source "target/linux/package/diag/Config.in"
source "target/linux/package/fuse/Config.in"
source "target/linux/package/hostap/Config.in"
+source "target/linux/package/ieee80211-dscape/Config.in"
source "target/linux/package/madwifi/Config.in"
source "target/linux/package/mini_fo/Config.in"
source "target/linux/package/openswan/Config.in"
endif
package-$(BR2_PACKAGE_KMOD_FUSE) += fuse
package-$(BR2_PACKAGE_KMOD_HOSTAP) += hostap
+package-$(BR2_PACKAGE_KMOD_IEEE80211_DSCAPE) += ieee80211-dscape
package-$(BR2_PACKAGE_KMOD_MADWIFI) += madwifi
package-$(BR2_PACKAGE_KMOD_MINI_FO) += mini_fo
package-$(BR2_PACKAGE_KMOD_OPENSWAN) += openswan
--- /dev/null
+config BR2_PACKAGE_KMOD_IEEE80211_DSCAPE
+ prompt "kmod-ieee80211-dscape............. IEEE 802.11 stack (devicescape)"
+ tristate
+ default y if BR2_LINUX_2_6_BRCM
+ default m if CONFIG_DEVEL
+ default n
+ help
+ IEEE 802.11 stack (devicescape)
+
+ http://ftp.kernel.org/pub/linux/kernel/people/jbenc/
--- /dev/null
+# $Id$
+
+include $(TOPDIR)/rules.mk
+include ../../rules.mk
+
+PKG_NAME := kmod-ieee80211-dscape
+PKG_RELEASE := 1
+PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)
+
+include $(TOPDIR)/package/rules.mk
+
+$(eval $(call PKG_template,KMOD_IEEE80211_DSCAPE,$(PKG_NAME),$(LINUX_VERSION)-$(BOARD)-$(PKG_RELEASE),$(ARCH),kernel ($(LINUX_VERSION)-$(BOARD)-$(KERNEL_RELEASE))))
+
+ifeq ($(KERNEL_DIR),)
+KERNEL_DIR:=$(LINUX_DIR)
+endif
+KERNEL_VERSION=$(shell echo "$(LINUX_VERSION)" | cut -d. -f1,2)
+
+$(PKG_BUILD_DIR)/.prepared:
+ mkdir -p $(PKG_BUILD_DIR)
+ cp -fpR ./src/* $(PKG_BUILD_DIR)/
+ touch $@
+
+$(PKG_BUILD_DIR)/.configured:
+ touch $@
+
+$(PKG_BUILD_DIR)/.built:
+ $(MAKE) -C "$(KERNEL_DIR)" \
+ CROSS_COMPILE="$(TARGET_CROSS)" \
+ ARCH="$(LINUX_KARCH)" \
+ PATH="$(TARGET_PATH)" \
+ SUBDIRS="$(PKG_BUILD_DIR)" \
+ LINUXINCLUDE="-I$(shell pwd)/src/include -I$(KERNEL_DIR)/include" \
+ modules
+ touch $@
+
+$(IPKG_KMOD_IEEE80211_DSCAPE):
+ install -m0755 -d $(IDIR_KMOD_IEEE80211_DSCAPE)/lib/modules/$(LINUX_VERSION)
+ #install -m0755 -d $(IDIR_KMOD_IEEE80211_DSCAPE)/etc/modules.d
+ cp -fpR $(PKG_BUILD_DIR)/*.ko $(IDIR_KMOD_IEEE80211_DSCAPE)/lib/modules/$(LINUX_VERSION)
+ $(IPKG_BUILD) $(IDIR_KMOD_IEEE80211_DSCAPE) $(PACKAGE_DIR)
+
+install-dev:
+ mkdir -p $(STAGING_DIR)/usr/include/ieee80211-dscape
+ cp -fpR src/include/* $(STAGING_DIR)/usr/include/ieee80211-dscape/
+
+uninstall-dev:
+ rm -rf $(STAGING_DIR)/usr/include/ieee80211-dscape
+
+compile-targets: install-dev
+clean-targets: uninstall-dev
--- /dev/null
+Package: kmod-ieee80211-dscape
+Priority: optional
+Section: sys
+Description: IEEE 802.11 stack (devicescape)
--- /dev/null
+config IEEE80211
+ tristate "Generic IEEE 802.11 Networking Stack"
+ ---help---
+ This option enables the hardware independent IEEE 802.11
+ networking stack.
+
+config IEEE80211_DEBUG
+ bool "Enable debugging output"
+ depends on IEEE80211
+ ---help---
+ This option will enable debug tracing output for the
+ ieee80211 network stack.
+
+ If you are not trying to debug or develop the ieee80211
+ subsystem, you most likely want to say N here.
+
+config IEEE80211_VERBOSE_DEBUG
+ bool "Verbose debugging output"
+ depends on IEEE80211_DEBUG
+
+config TKIP_DEBUG
+ bool "TKIP debugging"
+ depends on IEEE80211_DEBUG
+
+config IEEE80211_DEBUG_COUNTERS
+ bool "Extra statistics for TX/RX debugging"
+ depends on IEEE80211_DEBUG
+
+config HOSTAPD_WPA_TESTING
+ bool "Support for TKIP countermeasures testing"
+ depends on IEEE80211_DEBUG
+
--- /dev/null
+obj-$(CONFIG_IEEE80211) += 80211.o rate_control.o
+
+80211-objs := \
+ ieee80211.o \
+ ieee80211_ioctl.o \
+ sta_info.o \
+ wep.o \
+ wpa.o \
+ ieee80211_proc.o \
+ ieee80211_scan.o \
+ ieee80211_sta.o \
+ michael.o \
+ tkip.o \
+ aes_ccm.o \
+ wme.o
+
+ifeq ($(CONFIG_NET_SCHED),)
+ 80211-objs += fifo_qdisc.o
+endif
+
+ifeq ($(CONFIG_IEEE80211_LEDS),y)
+ 80211-objs += ieee80211_led.o
+endif
--- /dev/null
+/* Based on Rijndael implementation that has been placed in the public domain,
+ * although heavily modified.
+ *
+ * Modifications Copyright 2003, Instant802 Networks, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Optimized both speed and size by removing not used key lengths (only
+ * 128-bit is used in IEEE 802.11i).
+ */
+
+/* Use 256-byte Te4 table instead of larger 1024-byte */
+#define SMALL_TE4
+
+/* Save data size by using only one 1k table, but with a drawback of having to
+ * rotate entries at lookup. This can be useful, if the CPU supports free
+ * rotate on memory read. However, if this is not the case, this is much slower
+ * than four-table implementation. */
+/* #define ONLY_ONE_TABLE */
+
+
+/* --- start of code that is based on public domain AES implementation --- */
+
+/**
+ * rijndael-alg-fst.c
+ *
+ * @version 3.0 (December 2000)
+ *
+ * Optimised ANSI C code for the Rijndael cipher (now AES)
+ *
+ * @author Vincent Rijmen <vincent.rijmen@esat.kuleuven.ac.be>
+ * @author Antoon Bosselaers <antoon.bosselaers@esat.kuleuven.ac.be>
+ * @author Paulo Barreto <paulo.barreto@terra.com.br>
+ *
+ * This code is hereby placed in the public domain.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ''AS IS'' AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+Te0[x] = S [x].[02, 01, 01, 03];
+Te1[x] = S [x].[03, 02, 01, 01];
+Te2[x] = S [x].[01, 03, 02, 01];
+Te3[x] = S [x].[01, 01, 03, 02];
+Te4[x] = S [x].[01, 01, 01, 01];
+*/
+
+static const u32 Te0[256] =
+{
+ 0xc66363a5U, 0xf87c7c84U, 0xee777799U, 0xf67b7b8dU,
+ 0xfff2f20dU, 0xd66b6bbdU, 0xde6f6fb1U, 0x91c5c554U,
+ 0x60303050U, 0x02010103U, 0xce6767a9U, 0x562b2b7dU,
+ 0xe7fefe19U, 0xb5d7d762U, 0x4dababe6U, 0xec76769aU,
+ 0x8fcaca45U, 0x1f82829dU, 0x89c9c940U, 0xfa7d7d87U,
+ 0xeffafa15U, 0xb25959ebU, 0x8e4747c9U, 0xfbf0f00bU,
+ 0x41adadecU, 0xb3d4d467U, 0x5fa2a2fdU, 0x45afafeaU,
+ 0x239c9cbfU, 0x53a4a4f7U, 0xe4727296U, 0x9bc0c05bU,
+ 0x75b7b7c2U, 0xe1fdfd1cU, 0x3d9393aeU, 0x4c26266aU,
+ 0x6c36365aU, 0x7e3f3f41U, 0xf5f7f702U, 0x83cccc4fU,
+ 0x6834345cU, 0x51a5a5f4U, 0xd1e5e534U, 0xf9f1f108U,
+ 0xe2717193U, 0xabd8d873U, 0x62313153U, 0x2a15153fU,
+ 0x0804040cU, 0x95c7c752U, 0x46232365U, 0x9dc3c35eU,
+ 0x30181828U, 0x379696a1U, 0x0a05050fU, 0x2f9a9ab5U,
+ 0x0e070709U, 0x24121236U, 0x1b80809bU, 0xdfe2e23dU,
+ 0xcdebeb26U, 0x4e272769U, 0x7fb2b2cdU, 0xea75759fU,
+ 0x1209091bU, 0x1d83839eU, 0x582c2c74U, 0x341a1a2eU,
+ 0x361b1b2dU, 0xdc6e6eb2U, 0xb45a5aeeU, 0x5ba0a0fbU,
+ 0xa45252f6U, 0x763b3b4dU, 0xb7d6d661U, 0x7db3b3ceU,
+ 0x5229297bU, 0xdde3e33eU, 0x5e2f2f71U, 0x13848497U,
+ 0xa65353f5U, 0xb9d1d168U, 0x00000000U, 0xc1eded2cU,
+ 0x40202060U, 0xe3fcfc1fU, 0x79b1b1c8U, 0xb65b5bedU,
+ 0xd46a6abeU, 0x8dcbcb46U, 0x67bebed9U, 0x7239394bU,
+ 0x944a4adeU, 0x984c4cd4U, 0xb05858e8U, 0x85cfcf4aU,
+ 0xbbd0d06bU, 0xc5efef2aU, 0x4faaaae5U, 0xedfbfb16U,
+ 0x864343c5U, 0x9a4d4dd7U, 0x66333355U, 0x11858594U,
+ 0x8a4545cfU, 0xe9f9f910U, 0x04020206U, 0xfe7f7f81U,
+ 0xa05050f0U, 0x783c3c44U, 0x259f9fbaU, 0x4ba8a8e3U,
+ 0xa25151f3U, 0x5da3a3feU, 0x804040c0U, 0x058f8f8aU,
+ 0x3f9292adU, 0x219d9dbcU, 0x70383848U, 0xf1f5f504U,
+ 0x63bcbcdfU, 0x77b6b6c1U, 0xafdada75U, 0x42212163U,
+ 0x20101030U, 0xe5ffff1aU, 0xfdf3f30eU, 0xbfd2d26dU,
+ 0x81cdcd4cU, 0x180c0c14U, 0x26131335U, 0xc3ecec2fU,
+ 0xbe5f5fe1U, 0x359797a2U, 0x884444ccU, 0x2e171739U,
+ 0x93c4c457U, 0x55a7a7f2U, 0xfc7e7e82U, 0x7a3d3d47U,
+ 0xc86464acU, 0xba5d5de7U, 0x3219192bU, 0xe6737395U,
+ 0xc06060a0U, 0x19818198U, 0x9e4f4fd1U, 0xa3dcdc7fU,
+ 0x44222266U, 0x542a2a7eU, 0x3b9090abU, 0x0b888883U,
+ 0x8c4646caU, 0xc7eeee29U, 0x6bb8b8d3U, 0x2814143cU,
+ 0xa7dede79U, 0xbc5e5ee2U, 0x160b0b1dU, 0xaddbdb76U,
+ 0xdbe0e03bU, 0x64323256U, 0x743a3a4eU, 0x140a0a1eU,
+ 0x924949dbU, 0x0c06060aU, 0x4824246cU, 0xb85c5ce4U,
+ 0x9fc2c25dU, 0xbdd3d36eU, 0x43acacefU, 0xc46262a6U,
+ 0x399191a8U, 0x319595a4U, 0xd3e4e437U, 0xf279798bU,
+ 0xd5e7e732U, 0x8bc8c843U, 0x6e373759U, 0xda6d6db7U,
+ 0x018d8d8cU, 0xb1d5d564U, 0x9c4e4ed2U, 0x49a9a9e0U,
+ 0xd86c6cb4U, 0xac5656faU, 0xf3f4f407U, 0xcfeaea25U,
+ 0xca6565afU, 0xf47a7a8eU, 0x47aeaee9U, 0x10080818U,
+ 0x6fbabad5U, 0xf0787888U, 0x4a25256fU, 0x5c2e2e72U,
+ 0x381c1c24U, 0x57a6a6f1U, 0x73b4b4c7U, 0x97c6c651U,
+ 0xcbe8e823U, 0xa1dddd7cU, 0xe874749cU, 0x3e1f1f21U,
+ 0x964b4bddU, 0x61bdbddcU, 0x0d8b8b86U, 0x0f8a8a85U,
+ 0xe0707090U, 0x7c3e3e42U, 0x71b5b5c4U, 0xcc6666aaU,
+ 0x904848d8U, 0x06030305U, 0xf7f6f601U, 0x1c0e0e12U,
+ 0xc26161a3U, 0x6a35355fU, 0xae5757f9U, 0x69b9b9d0U,
+ 0x17868691U, 0x99c1c158U, 0x3a1d1d27U, 0x279e9eb9U,
+ 0xd9e1e138U, 0xebf8f813U, 0x2b9898b3U, 0x22111133U,
+ 0xd26969bbU, 0xa9d9d970U, 0x078e8e89U, 0x339494a7U,
+ 0x2d9b9bb6U, 0x3c1e1e22U, 0x15878792U, 0xc9e9e920U,
+ 0x87cece49U, 0xaa5555ffU, 0x50282878U, 0xa5dfdf7aU,
+ 0x038c8c8fU, 0x59a1a1f8U, 0x09898980U, 0x1a0d0d17U,
+ 0x65bfbfdaU, 0xd7e6e631U, 0x844242c6U, 0xd06868b8U,
+ 0x824141c3U, 0x299999b0U, 0x5a2d2d77U, 0x1e0f0f11U,
+ 0x7bb0b0cbU, 0xa85454fcU, 0x6dbbbbd6U, 0x2c16163aU,
+};
+
+#ifndef ONLY_ONE_TABLE
+static const u32 Te1[256] =
+{
+ 0xa5c66363U, 0x84f87c7cU, 0x99ee7777U, 0x8df67b7bU,
+ 0x0dfff2f2U, 0xbdd66b6bU, 0xb1de6f6fU, 0x5491c5c5U,
+ 0x50603030U, 0x03020101U, 0xa9ce6767U, 0x7d562b2bU,
+ 0x19e7fefeU, 0x62b5d7d7U, 0xe64dababU, 0x9aec7676U,
+ 0x458fcacaU, 0x9d1f8282U, 0x4089c9c9U, 0x87fa7d7dU,
+ 0x15effafaU, 0xebb25959U, 0xc98e4747U, 0x0bfbf0f0U,
+ 0xec41adadU, 0x67b3d4d4U, 0xfd5fa2a2U, 0xea45afafU,
+ 0xbf239c9cU, 0xf753a4a4U, 0x96e47272U, 0x5b9bc0c0U,
+ 0xc275b7b7U, 0x1ce1fdfdU, 0xae3d9393U, 0x6a4c2626U,
+ 0x5a6c3636U, 0x417e3f3fU, 0x02f5f7f7U, 0x4f83ccccU,
+ 0x5c683434U, 0xf451a5a5U, 0x34d1e5e5U, 0x08f9f1f1U,
+ 0x93e27171U, 0x73abd8d8U, 0x53623131U, 0x3f2a1515U,
+ 0x0c080404U, 0x5295c7c7U, 0x65462323U, 0x5e9dc3c3U,
+ 0x28301818U, 0xa1379696U, 0x0f0a0505U, 0xb52f9a9aU,
+ 0x090e0707U, 0x36241212U, 0x9b1b8080U, 0x3ddfe2e2U,
+ 0x26cdebebU, 0x694e2727U, 0xcd7fb2b2U, 0x9fea7575U,
+ 0x1b120909U, 0x9e1d8383U, 0x74582c2cU, 0x2e341a1aU,
+ 0x2d361b1bU, 0xb2dc6e6eU, 0xeeb45a5aU, 0xfb5ba0a0U,
+ 0xf6a45252U, 0x4d763b3bU, 0x61b7d6d6U, 0xce7db3b3U,
+ 0x7b522929U, 0x3edde3e3U, 0x715e2f2fU, 0x97138484U,
+ 0xf5a65353U, 0x68b9d1d1U, 0x00000000U, 0x2cc1ededU,
+ 0x60402020U, 0x1fe3fcfcU, 0xc879b1b1U, 0xedb65b5bU,
+ 0xbed46a6aU, 0x468dcbcbU, 0xd967bebeU, 0x4b723939U,
+ 0xde944a4aU, 0xd4984c4cU, 0xe8b05858U, 0x4a85cfcfU,
+ 0x6bbbd0d0U, 0x2ac5efefU, 0xe54faaaaU, 0x16edfbfbU,
+ 0xc5864343U, 0xd79a4d4dU, 0x55663333U, 0x94118585U,
+ 0xcf8a4545U, 0x10e9f9f9U, 0x06040202U, 0x81fe7f7fU,
+ 0xf0a05050U, 0x44783c3cU, 0xba259f9fU, 0xe34ba8a8U,
+ 0xf3a25151U, 0xfe5da3a3U, 0xc0804040U, 0x8a058f8fU,
+ 0xad3f9292U, 0xbc219d9dU, 0x48703838U, 0x04f1f5f5U,
+ 0xdf63bcbcU, 0xc177b6b6U, 0x75afdadaU, 0x63422121U,
+ 0x30201010U, 0x1ae5ffffU, 0x0efdf3f3U, 0x6dbfd2d2U,
+ 0x4c81cdcdU, 0x14180c0cU, 0x35261313U, 0x2fc3ececU,
+ 0xe1be5f5fU, 0xa2359797U, 0xcc884444U, 0x392e1717U,
+ 0x5793c4c4U, 0xf255a7a7U, 0x82fc7e7eU, 0x477a3d3dU,
+ 0xacc86464U, 0xe7ba5d5dU, 0x2b321919U, 0x95e67373U,
+ 0xa0c06060U, 0x98198181U, 0xd19e4f4fU, 0x7fa3dcdcU,
+ 0x66442222U, 0x7e542a2aU, 0xab3b9090U, 0x830b8888U,
+ 0xca8c4646U, 0x29c7eeeeU, 0xd36bb8b8U, 0x3c281414U,
+ 0x79a7dedeU, 0xe2bc5e5eU, 0x1d160b0bU, 0x76addbdbU,
+ 0x3bdbe0e0U, 0x56643232U, 0x4e743a3aU, 0x1e140a0aU,
+ 0xdb924949U, 0x0a0c0606U, 0x6c482424U, 0xe4b85c5cU,
+ 0x5d9fc2c2U, 0x6ebdd3d3U, 0xef43acacU, 0xa6c46262U,
+ 0xa8399191U, 0xa4319595U, 0x37d3e4e4U, 0x8bf27979U,
+ 0x32d5e7e7U, 0x438bc8c8U, 0x596e3737U, 0xb7da6d6dU,
+ 0x8c018d8dU, 0x64b1d5d5U, 0xd29c4e4eU, 0xe049a9a9U,
+ 0xb4d86c6cU, 0xfaac5656U, 0x07f3f4f4U, 0x25cfeaeaU,
+ 0xafca6565U, 0x8ef47a7aU, 0xe947aeaeU, 0x18100808U,
+ 0xd56fbabaU, 0x88f07878U, 0x6f4a2525U, 0x725c2e2eU,
+ 0x24381c1cU, 0xf157a6a6U, 0xc773b4b4U, 0x5197c6c6U,
+ 0x23cbe8e8U, 0x7ca1ddddU, 0x9ce87474U, 0x213e1f1fU,
+ 0xdd964b4bU, 0xdc61bdbdU, 0x860d8b8bU, 0x850f8a8aU,
+ 0x90e07070U, 0x427c3e3eU, 0xc471b5b5U, 0xaacc6666U,
+ 0xd8904848U, 0x05060303U, 0x01f7f6f6U, 0x121c0e0eU,
+ 0xa3c26161U, 0x5f6a3535U, 0xf9ae5757U, 0xd069b9b9U,
+ 0x91178686U, 0x5899c1c1U, 0x273a1d1dU, 0xb9279e9eU,
+ 0x38d9e1e1U, 0x13ebf8f8U, 0xb32b9898U, 0x33221111U,
+ 0xbbd26969U, 0x70a9d9d9U, 0x89078e8eU, 0xa7339494U,
+ 0xb62d9b9bU, 0x223c1e1eU, 0x92158787U, 0x20c9e9e9U,
+ 0x4987ceceU, 0xffaa5555U, 0x78502828U, 0x7aa5dfdfU,
+ 0x8f038c8cU, 0xf859a1a1U, 0x80098989U, 0x171a0d0dU,
+ 0xda65bfbfU, 0x31d7e6e6U, 0xc6844242U, 0xb8d06868U,
+ 0xc3824141U, 0xb0299999U, 0x775a2d2dU, 0x111e0f0fU,
+ 0xcb7bb0b0U, 0xfca85454U, 0xd66dbbbbU, 0x3a2c1616U,
+};
+
+static const u32 Te2[256] =
+{
+ 0x63a5c663U, 0x7c84f87cU, 0x7799ee77U, 0x7b8df67bU,
+ 0xf20dfff2U, 0x6bbdd66bU, 0x6fb1de6fU, 0xc55491c5U,
+ 0x30506030U, 0x01030201U, 0x67a9ce67U, 0x2b7d562bU,
+ 0xfe19e7feU, 0xd762b5d7U, 0xabe64dabU, 0x769aec76U,
+ 0xca458fcaU, 0x829d1f82U, 0xc94089c9U, 0x7d87fa7dU,
+ 0xfa15effaU, 0x59ebb259U, 0x47c98e47U, 0xf00bfbf0U,
+ 0xadec41adU, 0xd467b3d4U, 0xa2fd5fa2U, 0xafea45afU,
+ 0x9cbf239cU, 0xa4f753a4U, 0x7296e472U, 0xc05b9bc0U,
+ 0xb7c275b7U, 0xfd1ce1fdU, 0x93ae3d93U, 0x266a4c26U,
+ 0x365a6c36U, 0x3f417e3fU, 0xf702f5f7U, 0xcc4f83ccU,
+ 0x345c6834U, 0xa5f451a5U, 0xe534d1e5U, 0xf108f9f1U,
+ 0x7193e271U, 0xd873abd8U, 0x31536231U, 0x153f2a15U,
+ 0x040c0804U, 0xc75295c7U, 0x23654623U, 0xc35e9dc3U,
+ 0x18283018U, 0x96a13796U, 0x050f0a05U, 0x9ab52f9aU,
+ 0x07090e07U, 0x12362412U, 0x809b1b80U, 0xe23ddfe2U,
+ 0xeb26cdebU, 0x27694e27U, 0xb2cd7fb2U, 0x759fea75U,
+ 0x091b1209U, 0x839e1d83U, 0x2c74582cU, 0x1a2e341aU,
+ 0x1b2d361bU, 0x6eb2dc6eU, 0x5aeeb45aU, 0xa0fb5ba0U,
+ 0x52f6a452U, 0x3b4d763bU, 0xd661b7d6U, 0xb3ce7db3U,
+ 0x297b5229U, 0xe33edde3U, 0x2f715e2fU, 0x84971384U,
+ 0x53f5a653U, 0xd168b9d1U, 0x00000000U, 0xed2cc1edU,
+ 0x20604020U, 0xfc1fe3fcU, 0xb1c879b1U, 0x5bedb65bU,
+ 0x6abed46aU, 0xcb468dcbU, 0xbed967beU, 0x394b7239U,
+ 0x4ade944aU, 0x4cd4984cU, 0x58e8b058U, 0xcf4a85cfU,
+ 0xd06bbbd0U, 0xef2ac5efU, 0xaae54faaU, 0xfb16edfbU,
+ 0x43c58643U, 0x4dd79a4dU, 0x33556633U, 0x85941185U,
+ 0x45cf8a45U, 0xf910e9f9U, 0x02060402U, 0x7f81fe7fU,
+ 0x50f0a050U, 0x3c44783cU, 0x9fba259fU, 0xa8e34ba8U,
+ 0x51f3a251U, 0xa3fe5da3U, 0x40c08040U, 0x8f8a058fU,
+ 0x92ad3f92U, 0x9dbc219dU, 0x38487038U, 0xf504f1f5U,
+ 0xbcdf63bcU, 0xb6c177b6U, 0xda75afdaU, 0x21634221U,
+ 0x10302010U, 0xff1ae5ffU, 0xf30efdf3U, 0xd26dbfd2U,
+ 0xcd4c81cdU, 0x0c14180cU, 0x13352613U, 0xec2fc3ecU,
+ 0x5fe1be5fU, 0x97a23597U, 0x44cc8844U, 0x17392e17U,
+ 0xc45793c4U, 0xa7f255a7U, 0x7e82fc7eU, 0x3d477a3dU,
+ 0x64acc864U, 0x5de7ba5dU, 0x192b3219U, 0x7395e673U,
+ 0x60a0c060U, 0x81981981U, 0x4fd19e4fU, 0xdc7fa3dcU,
+ 0x22664422U, 0x2a7e542aU, 0x90ab3b90U, 0x88830b88U,
+ 0x46ca8c46U, 0xee29c7eeU, 0xb8d36bb8U, 0x143c2814U,
+ 0xde79a7deU, 0x5ee2bc5eU, 0x0b1d160bU, 0xdb76addbU,
+ 0xe03bdbe0U, 0x32566432U, 0x3a4e743aU, 0x0a1e140aU,
+ 0x49db9249U, 0x060a0c06U, 0x246c4824U, 0x5ce4b85cU,
+ 0xc25d9fc2U, 0xd36ebdd3U, 0xacef43acU, 0x62a6c462U,
+ 0x91a83991U, 0x95a43195U, 0xe437d3e4U, 0x798bf279U,
+ 0xe732d5e7U, 0xc8438bc8U, 0x37596e37U, 0x6db7da6dU,
+ 0x8d8c018dU, 0xd564b1d5U, 0x4ed29c4eU, 0xa9e049a9U,
+ 0x6cb4d86cU, 0x56faac56U, 0xf407f3f4U, 0xea25cfeaU,
+ 0x65afca65U, 0x7a8ef47aU, 0xaee947aeU, 0x08181008U,
+ 0xbad56fbaU, 0x7888f078U, 0x256f4a25U, 0x2e725c2eU,
+ 0x1c24381cU, 0xa6f157a6U, 0xb4c773b4U, 0xc65197c6U,
+ 0xe823cbe8U, 0xdd7ca1ddU, 0x749ce874U, 0x1f213e1fU,
+ 0x4bdd964bU, 0xbddc61bdU, 0x8b860d8bU, 0x8a850f8aU,
+ 0x7090e070U, 0x3e427c3eU, 0xb5c471b5U, 0x66aacc66U,
+ 0x48d89048U, 0x03050603U, 0xf601f7f6U, 0x0e121c0eU,
+ 0x61a3c261U, 0x355f6a35U, 0x57f9ae57U, 0xb9d069b9U,
+ 0x86911786U, 0xc15899c1U, 0x1d273a1dU, 0x9eb9279eU,
+ 0xe138d9e1U, 0xf813ebf8U, 0x98b32b98U, 0x11332211U,
+ 0x69bbd269U, 0xd970a9d9U, 0x8e89078eU, 0x94a73394U,
+ 0x9bb62d9bU, 0x1e223c1eU, 0x87921587U, 0xe920c9e9U,
+ 0xce4987ceU, 0x55ffaa55U, 0x28785028U, 0xdf7aa5dfU,
+ 0x8c8f038cU, 0xa1f859a1U, 0x89800989U, 0x0d171a0dU,
+ 0xbfda65bfU, 0xe631d7e6U, 0x42c68442U, 0x68b8d068U,
+ 0x41c38241U, 0x99b02999U, 0x2d775a2dU, 0x0f111e0fU,
+ 0xb0cb7bb0U, 0x54fca854U, 0xbbd66dbbU, 0x163a2c16U,
+};
+
+static const u32 Te3[256] =
+{
+ 0x6363a5c6U, 0x7c7c84f8U, 0x777799eeU, 0x7b7b8df6U,
+ 0xf2f20dffU, 0x6b6bbdd6U, 0x6f6fb1deU, 0xc5c55491U,
+ 0x30305060U, 0x01010302U, 0x6767a9ceU, 0x2b2b7d56U,
+ 0xfefe19e7U, 0xd7d762b5U, 0xababe64dU, 0x76769aecU,
+ 0xcaca458fU, 0x82829d1fU, 0xc9c94089U, 0x7d7d87faU,
+ 0xfafa15efU, 0x5959ebb2U, 0x4747c98eU, 0xf0f00bfbU,
+ 0xadadec41U, 0xd4d467b3U, 0xa2a2fd5fU, 0xafafea45U,
+ 0x9c9cbf23U, 0xa4a4f753U, 0x727296e4U, 0xc0c05b9bU,
+ 0xb7b7c275U, 0xfdfd1ce1U, 0x9393ae3dU, 0x26266a4cU,
+ 0x36365a6cU, 0x3f3f417eU, 0xf7f702f5U, 0xcccc4f83U,
+ 0x34345c68U, 0xa5a5f451U, 0xe5e534d1U, 0xf1f108f9U,
+ 0x717193e2U, 0xd8d873abU, 0x31315362U, 0x15153f2aU,
+ 0x04040c08U, 0xc7c75295U, 0x23236546U, 0xc3c35e9dU,
+ 0x18182830U, 0x9696a137U, 0x05050f0aU, 0x9a9ab52fU,
+ 0x0707090eU, 0x12123624U, 0x80809b1bU, 0xe2e23ddfU,
+ 0xebeb26cdU, 0x2727694eU, 0xb2b2cd7fU, 0x75759feaU,
+ 0x09091b12U, 0x83839e1dU, 0x2c2c7458U, 0x1a1a2e34U,
+ 0x1b1b2d36U, 0x6e6eb2dcU, 0x5a5aeeb4U, 0xa0a0fb5bU,
+ 0x5252f6a4U, 0x3b3b4d76U, 0xd6d661b7U, 0xb3b3ce7dU,
+ 0x29297b52U, 0xe3e33eddU, 0x2f2f715eU, 0x84849713U,
+ 0x5353f5a6U, 0xd1d168b9U, 0x00000000U, 0xeded2cc1U,
+ 0x20206040U, 0xfcfc1fe3U, 0xb1b1c879U, 0x5b5bedb6U,
+ 0x6a6abed4U, 0xcbcb468dU, 0xbebed967U, 0x39394b72U,
+ 0x4a4ade94U, 0x4c4cd498U, 0x5858e8b0U, 0xcfcf4a85U,
+ 0xd0d06bbbU, 0xefef2ac5U, 0xaaaae54fU, 0xfbfb16edU,
+ 0x4343c586U, 0x4d4dd79aU, 0x33335566U, 0x85859411U,
+ 0x4545cf8aU, 0xf9f910e9U, 0x02020604U, 0x7f7f81feU,
+ 0x5050f0a0U, 0x3c3c4478U, 0x9f9fba25U, 0xa8a8e34bU,
+ 0x5151f3a2U, 0xa3a3fe5dU, 0x4040c080U, 0x8f8f8a05U,
+ 0x9292ad3fU, 0x9d9dbc21U, 0x38384870U, 0xf5f504f1U,
+ 0xbcbcdf63U, 0xb6b6c177U, 0xdada75afU, 0x21216342U,
+ 0x10103020U, 0xffff1ae5U, 0xf3f30efdU, 0xd2d26dbfU,
+ 0xcdcd4c81U, 0x0c0c1418U, 0x13133526U, 0xecec2fc3U,
+ 0x5f5fe1beU, 0x9797a235U, 0x4444cc88U, 0x1717392eU,
+ 0xc4c45793U, 0xa7a7f255U, 0x7e7e82fcU, 0x3d3d477aU,
+ 0x6464acc8U, 0x5d5de7baU, 0x19192b32U, 0x737395e6U,
+ 0x6060a0c0U, 0x81819819U, 0x4f4fd19eU, 0xdcdc7fa3U,
+ 0x22226644U, 0x2a2a7e54U, 0x9090ab3bU, 0x8888830bU,
+ 0x4646ca8cU, 0xeeee29c7U, 0xb8b8d36bU, 0x14143c28U,
+ 0xdede79a7U, 0x5e5ee2bcU, 0x0b0b1d16U, 0xdbdb76adU,
+ 0xe0e03bdbU, 0x32325664U, 0x3a3a4e74U, 0x0a0a1e14U,
+ 0x4949db92U, 0x06060a0cU, 0x24246c48U, 0x5c5ce4b8U,
+ 0xc2c25d9fU, 0xd3d36ebdU, 0xacacef43U, 0x6262a6c4U,
+ 0x9191a839U, 0x9595a431U, 0xe4e437d3U, 0x79798bf2U,
+ 0xe7e732d5U, 0xc8c8438bU, 0x3737596eU, 0x6d6db7daU,
+ 0x8d8d8c01U, 0xd5d564b1U, 0x4e4ed29cU, 0xa9a9e049U,
+ 0x6c6cb4d8U, 0x5656faacU, 0xf4f407f3U, 0xeaea25cfU,
+ 0x6565afcaU, 0x7a7a8ef4U, 0xaeaee947U, 0x08081810U,
+ 0xbabad56fU, 0x787888f0U, 0x25256f4aU, 0x2e2e725cU,
+ 0x1c1c2438U, 0xa6a6f157U, 0xb4b4c773U, 0xc6c65197U,
+ 0xe8e823cbU, 0xdddd7ca1U, 0x74749ce8U, 0x1f1f213eU,
+ 0x4b4bdd96U, 0xbdbddc61U, 0x8b8b860dU, 0x8a8a850fU,
+ 0x707090e0U, 0x3e3e427cU, 0xb5b5c471U, 0x6666aaccU,
+ 0x4848d890U, 0x03030506U, 0xf6f601f7U, 0x0e0e121cU,
+ 0x6161a3c2U, 0x35355f6aU, 0x5757f9aeU, 0xb9b9d069U,
+ 0x86869117U, 0xc1c15899U, 0x1d1d273aU, 0x9e9eb927U,
+ 0xe1e138d9U, 0xf8f813ebU, 0x9898b32bU, 0x11113322U,
+ 0x6969bbd2U, 0xd9d970a9U, 0x8e8e8907U, 0x9494a733U,
+ 0x9b9bb62dU, 0x1e1e223cU, 0x87879215U, 0xe9e920c9U,
+ 0xcece4987U, 0x5555ffaaU, 0x28287850U, 0xdfdf7aa5U,
+ 0x8c8c8f03U, 0xa1a1f859U, 0x89898009U, 0x0d0d171aU,
+ 0xbfbfda65U, 0xe6e631d7U, 0x4242c684U, 0x6868b8d0U,
+ 0x4141c382U, 0x9999b029U, 0x2d2d775aU, 0x0f0f111eU,
+ 0xb0b0cb7bU, 0x5454fca8U, 0xbbbbd66dU, 0x16163a2cU,
+};
+
+#define TE0(v) (Te0[(v) >> 24])
+#define TE1(v) (Te1[((v) >> 16) & 0xff])
+#define TE2(v) (Te2[((v) >> 8) & 0xff])
+#define TE3(v) (Te3[(v) & 0xff])
+
+#else /* ONLY_ONE_TABLE */
+
+
+static inline u32 ROR8(u32 v)
+{
+ return (v >> 8) | (v << 24);
+}
+
+static inline u32 ROR16(u32 v)
+{
+ return (v >> 16) | (v << 16);
+}
+
+static inline u32 ROR24(u32 v)
+{
+ return (v >> 24) | (v << 8);
+}
+
+#define TE0(v) (Te0[(v) >> 24])
+#define TE1(v) (ROR8(Te0[((v) >> 16) & 0xff]))
+#define TE2(v) (ROR16(Te0[((v) >> 8) & 0xff]))
+#define TE3(v) (ROR24(Te0[(v) & 0xff]))
+
+#endif /* ONLY_ONE_TABLE */
+
+
+
+#ifdef SMALL_TE4
+static const u8 Te4s[256] = {
+ 0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5,
+ 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76,
+ 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0,
+ 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0,
+ 0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc,
+ 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15,
+ 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a,
+ 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75,
+ 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0,
+ 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84,
+ 0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b,
+ 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf,
+ 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85,
+ 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8,
+ 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5,
+ 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2,
+ 0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17,
+ 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73,
+ 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88,
+ 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb,
+ 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c,
+ 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79,
+ 0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9,
+ 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08,
+ 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6,
+ 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a,
+ 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e,
+ 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e,
+ 0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94,
+ 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf,
+ 0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68,
+ 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16,
+};
+
+#define TE4_1(v) (Te4s[(v) & 0xff] << 24)
+#define TE4_2(v) (Te4s[(v) & 0xff] << 16)
+#define TE4_3(v) (Te4s[(v) & 0xff] << 8)
+#define TE4_4(v) (Te4s[(v) & 0xff])
+
+#else /* SMALL_TE4 */
+
+static const u32 Te4[256] =
+{
+ 0x63636363U, 0x7c7c7c7cU, 0x77777777U, 0x7b7b7b7bU,
+ 0xf2f2f2f2U, 0x6b6b6b6bU, 0x6f6f6f6fU, 0xc5c5c5c5U,
+ 0x30303030U, 0x01010101U, 0x67676767U, 0x2b2b2b2bU,
+ 0xfefefefeU, 0xd7d7d7d7U, 0xababababU, 0x76767676U,
+ 0xcacacacaU, 0x82828282U, 0xc9c9c9c9U, 0x7d7d7d7dU,
+ 0xfafafafaU, 0x59595959U, 0x47474747U, 0xf0f0f0f0U,
+ 0xadadadadU, 0xd4d4d4d4U, 0xa2a2a2a2U, 0xafafafafU,
+ 0x9c9c9c9cU, 0xa4a4a4a4U, 0x72727272U, 0xc0c0c0c0U,
+ 0xb7b7b7b7U, 0xfdfdfdfdU, 0x93939393U, 0x26262626U,
+ 0x36363636U, 0x3f3f3f3fU, 0xf7f7f7f7U, 0xccccccccU,
+ 0x34343434U, 0xa5a5a5a5U, 0xe5e5e5e5U, 0xf1f1f1f1U,
+ 0x71717171U, 0xd8d8d8d8U, 0x31313131U, 0x15151515U,
+ 0x04040404U, 0xc7c7c7c7U, 0x23232323U, 0xc3c3c3c3U,
+ 0x18181818U, 0x96969696U, 0x05050505U, 0x9a9a9a9aU,
+ 0x07070707U, 0x12121212U, 0x80808080U, 0xe2e2e2e2U,
+ 0xebebebebU, 0x27272727U, 0xb2b2b2b2U, 0x75757575U,
+ 0x09090909U, 0x83838383U, 0x2c2c2c2cU, 0x1a1a1a1aU,
+ 0x1b1b1b1bU, 0x6e6e6e6eU, 0x5a5a5a5aU, 0xa0a0a0a0U,
+ 0x52525252U, 0x3b3b3b3bU, 0xd6d6d6d6U, 0xb3b3b3b3U,
+ 0x29292929U, 0xe3e3e3e3U, 0x2f2f2f2fU, 0x84848484U,
+ 0x53535353U, 0xd1d1d1d1U, 0x00000000U, 0xededededU,
+ 0x20202020U, 0xfcfcfcfcU, 0xb1b1b1b1U, 0x5b5b5b5bU,
+ 0x6a6a6a6aU, 0xcbcbcbcbU, 0xbebebebeU, 0x39393939U,
+ 0x4a4a4a4aU, 0x4c4c4c4cU, 0x58585858U, 0xcfcfcfcfU,
+ 0xd0d0d0d0U, 0xefefefefU, 0xaaaaaaaaU, 0xfbfbfbfbU,
+ 0x43434343U, 0x4d4d4d4dU, 0x33333333U, 0x85858585U,
+ 0x45454545U, 0xf9f9f9f9U, 0x02020202U, 0x7f7f7f7fU,
+ 0x50505050U, 0x3c3c3c3cU, 0x9f9f9f9fU, 0xa8a8a8a8U,
+ 0x51515151U, 0xa3a3a3a3U, 0x40404040U, 0x8f8f8f8fU,
+ 0x92929292U, 0x9d9d9d9dU, 0x38383838U, 0xf5f5f5f5U,
+ 0xbcbcbcbcU, 0xb6b6b6b6U, 0xdadadadaU, 0x21212121U,
+ 0x10101010U, 0xffffffffU, 0xf3f3f3f3U, 0xd2d2d2d2U,
+ 0xcdcdcdcdU, 0x0c0c0c0cU, 0x13131313U, 0xececececU,
+ 0x5f5f5f5fU, 0x97979797U, 0x44444444U, 0x17171717U,
+ 0xc4c4c4c4U, 0xa7a7a7a7U, 0x7e7e7e7eU, 0x3d3d3d3dU,
+ 0x64646464U, 0x5d5d5d5dU, 0x19191919U, 0x73737373U,
+ 0x60606060U, 0x81818181U, 0x4f4f4f4fU, 0xdcdcdcdcU,
+ 0x22222222U, 0x2a2a2a2aU, 0x90909090U, 0x88888888U,
+ 0x46464646U, 0xeeeeeeeeU, 0xb8b8b8b8U, 0x14141414U,
+ 0xdedededeU, 0x5e5e5e5eU, 0x0b0b0b0bU, 0xdbdbdbdbU,
+ 0xe0e0e0e0U, 0x32323232U, 0x3a3a3a3aU, 0x0a0a0a0aU,
+ 0x49494949U, 0x06060606U, 0x24242424U, 0x5c5c5c5cU,
+ 0xc2c2c2c2U, 0xd3d3d3d3U, 0xacacacacU, 0x62626262U,
+ 0x91919191U, 0x95959595U, 0xe4e4e4e4U, 0x79797979U,
+ 0xe7e7e7e7U, 0xc8c8c8c8U, 0x37373737U, 0x6d6d6d6dU,
+ 0x8d8d8d8dU, 0xd5d5d5d5U, 0x4e4e4e4eU, 0xa9a9a9a9U,
+ 0x6c6c6c6cU, 0x56565656U, 0xf4f4f4f4U, 0xeaeaeaeaU,
+ 0x65656565U, 0x7a7a7a7aU, 0xaeaeaeaeU, 0x08080808U,
+ 0xbabababaU, 0x78787878U, 0x25252525U, 0x2e2e2e2eU,
+ 0x1c1c1c1cU, 0xa6a6a6a6U, 0xb4b4b4b4U, 0xc6c6c6c6U,
+ 0xe8e8e8e8U, 0xddddddddU, 0x74747474U, 0x1f1f1f1fU,
+ 0x4b4b4b4bU, 0xbdbdbdbdU, 0x8b8b8b8bU, 0x8a8a8a8aU,
+ 0x70707070U, 0x3e3e3e3eU, 0xb5b5b5b5U, 0x66666666U,
+ 0x48484848U, 0x03030303U, 0xf6f6f6f6U, 0x0e0e0e0eU,
+ 0x61616161U, 0x35353535U, 0x57575757U, 0xb9b9b9b9U,
+ 0x86868686U, 0xc1c1c1c1U, 0x1d1d1d1dU, 0x9e9e9e9eU,
+ 0xe1e1e1e1U, 0xf8f8f8f8U, 0x98989898U, 0x11111111U,
+ 0x69696969U, 0xd9d9d9d9U, 0x8e8e8e8eU, 0x94949494U,
+ 0x9b9b9b9bU, 0x1e1e1e1eU, 0x87878787U, 0xe9e9e9e9U,
+ 0xcecececeU, 0x55555555U, 0x28282828U, 0xdfdfdfdfU,
+ 0x8c8c8c8cU, 0xa1a1a1a1U, 0x89898989U, 0x0d0d0d0dU,
+ 0xbfbfbfbfU, 0xe6e6e6e6U, 0x42424242U, 0x68686868U,
+ 0x41414141U, 0x99999999U, 0x2d2d2d2dU, 0x0f0f0f0fU,
+ 0xb0b0b0b0U, 0x54545454U, 0xbbbbbbbbU, 0x16161616U,
+};
+
+#define TE4_1(v) (Te4[(v) & 0xff] & 0xff000000)
+#define TE4_2(v) (Te4[(v) & 0xff] & 0x00ff0000)
+#define TE4_3(v) (Te4[(v) & 0xff] & 0x0000ff00)
+#define TE4_4(v) (Te4[(v) & 0xff] & 0x000000ff)
+
+#endif /* SMALL_TE4 */
+
+
+static const u32 rcon[] = {
+ 0x01000000, 0x02000000, 0x04000000, 0x08000000, 0x10000000,
+ 0x20000000, 0x40000000, 0x80000000, 0x1B000000, 0x36000000,
+};
+
+#define GETU32(pt) \
+(((u32)(pt)[0] << 24) ^ ((u32)(pt)[1] << 16) ^ ((u32)(pt)[2] << 8) ^ \
+((u32)(pt)[3]))
+#define PUTU32(ct, st) \
+{ (ct)[0] = (u8)((st) >> 24); (ct)[1] = (u8)((st) >> 16); \
+(ct)[2] = (u8)((st) >> 8); (ct)[3] = (u8)(st); }
+
+
+/* Expand the cipher key into the encryption key schedule. */
+void ieee80211_aes_key_setup_encrypt(u32 rk[/*44*/], const u8 key[])
+{
+ int i;
+ u32 temp;
+
+ rk[0] = GETU32(key );
+ rk[1] = GETU32(key + 4);
+ rk[2] = GETU32(key + 8);
+ rk[3] = GETU32(key + 12);
+
+ for (i = 0; i < 10; i++) {
+ temp = rk[3];
+ rk[4] = rk[0] ^ TE4_1(temp >> 16) ^ TE4_2(temp >> 8) ^
+ TE4_3(temp) ^ TE4_4(temp >> 24) ^ rcon[i];
+ rk[5] = rk[1] ^ rk[4];
+ rk[6] = rk[2] ^ rk[5];
+ rk[7] = rk[3] ^ rk[6];
+ rk += 4;
+ }
+}
+
+
+void ieee80211_aes_encrypt(const u32 rk[/*44*/], const u8 pt[16], u8 ct[16])
+{
+ const int Nr = 10;
+ u32 s0, s1, s2, s3, t0, t1, t2, t3;
+
+ /* Map byte array block to cipher state and add initial round key */
+ s0 = GETU32(pt ) ^ rk[0];
+ s1 = GETU32(pt + 4) ^ rk[1];
+ s2 = GETU32(pt + 8) ^ rk[2];
+ s3 = GETU32(pt + 12) ^ rk[3];
+
+#define ROUND(r,d,s,i) \
+d##0 = TE0(s##0) ^ TE1(s##1) ^ TE2(s##2) ^ TE3(s##3) ^ rk[i]; \
+d##1 = TE0(s##1) ^ TE1(s##2) ^ TE2(s##3) ^ TE3(s##0) ^ rk[i + 1]; \
+d##2 = TE0(s##2) ^ TE1(s##3) ^ TE2(s##0) ^ TE3(s##1) ^ rk[i + 2]; \
+d##3 = TE0(s##3) ^ TE1(s##0) ^ TE2(s##1) ^ TE3(s##2) ^ rk[i + 3]
+ ROUND(1,t,s,4);
+ ROUND(2,s,t,8);
+ ROUND(3,t,s,12);
+ ROUND(4,s,t,16);
+ ROUND(5,t,s,20);
+ ROUND(6,s,t,24);
+ ROUND(7,t,s,28);
+ ROUND(8,s,t,32);
+ ROUND(9,t,s,36);
+#undef ROUND
+
+ rk += Nr << 2;
+
+ /* Apply the last round and map cipher state to byte array block */
+ s0 = TE4_1(t0 >> 24) ^ TE4_2(t1 >> 16) ^ TE4_3(t2 >> 8) ^ TE4_4(t3) ^
+ rk[0];
+ PUTU32(ct, s0);
+ s0 = TE4_1(t1 >> 24) ^ TE4_2(t2 >> 16) ^ TE4_3(t3 >> 8) ^ TE4_4(t0) ^
+ rk[1];
+ PUTU32(ct + 4, s0);
+ s0 = TE4_1(t2 >> 24) ^ TE4_2(t3 >> 16) ^ TE4_3(t0 >> 8) ^ TE4_4(t1) ^
+ rk[2];
+ PUTU32(ct + 8, s0);
+ s0 = TE4_1(t3 >> 24) ^ TE4_2(t0 >> 16) ^ TE4_3(t1 >> 8) ^ TE4_4(t2) ^
+ rk[3];
+ PUTU32(ct + 12, s0);
+}
+
+/* --- end of code that is based on public domain AES implementation --- */
--- /dev/null
+/*
+ * Copyright 2003-2004, Instant802 Networks, Inc.
+ * Copyright 2005, Devicescape Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/types.h>
+#include <linux/netdevice.h>
+
+#include <net/ieee80211.h>
+#include "ieee80211_key.h"
+#include "aes_ccm.h"
+
+#include "aes.c"
+
+static inline void aes_ccm_prepare(u32 *rk, u8 *b_0, u8 *aad, u8 *b,
+ u8 *s_0, u8 *a)
+{
+ int i;
+
+ ieee80211_aes_encrypt(rk, b_0, b);
+
+ /* Extra Authenticate-only data (always two AES blocks) */
+ for (i = 0; i < AES_BLOCK_LEN; i++)
+ aad[i] ^= b[i];
+ ieee80211_aes_encrypt(rk, aad, b);
+
+ aad += AES_BLOCK_LEN;
+
+ for (i = 0; i < AES_BLOCK_LEN; i++)
+ aad[i] ^= b[i];
+ ieee80211_aes_encrypt(rk, aad, a);
+
+ /* Mask out bits from auth-only-b_0 */
+ b_0[0] &= 0x07;
+
+ /* S_0 is used to encrypt T (= MIC) */
+ b_0[14] = 0;
+ b_0[15] = 0;
+ ieee80211_aes_encrypt(rk, b_0, s_0);
+}
+
+
+void ieee80211_aes_ccm_encrypt(u32 *rk, u8 *b_0, u8 *aad, u8 *data,
+ size_t data_len, u8 *cdata, u8 *mic)
+{
+ int i, j, last_len, num_blocks;
+ u8 *pos, *cpos;
+ u8 b[AES_BLOCK_LEN], s_0[AES_BLOCK_LEN], e[AES_BLOCK_LEN];
+
+ num_blocks = (data_len + AES_BLOCK_LEN - 1) / AES_BLOCK_LEN;
+ last_len = data_len % AES_BLOCK_LEN;
+ aes_ccm_prepare(rk, b_0, aad, b, s_0, b);
+
+ /* Process payload blocks */
+ pos = data;
+ cpos = cdata;
+ for (j = 1; j <= num_blocks; j++) {
+ int blen = (j == num_blocks && last_len) ?
+ last_len : AES_BLOCK_LEN;
+
+ /* Authentication followed by encryption */
+ for (i = 0; i < blen; i++)
+ b[i] ^= pos[i];
+ ieee80211_aes_encrypt(rk, b, b);
+
+ b_0[14] = (j >> 8) & 0xff;
+ b_0[15] = j & 0xff;
+ ieee80211_aes_encrypt(rk, b_0, e);
+ for (i = 0; i < blen; i++)
+ *cpos++ = *pos++ ^ e[i];
+ }
+
+ for (i = 0; i < CCMP_MIC_LEN; i++)
+ mic[i] = b[i] ^ s_0[i];
+}
+
+
+int ieee80211_aes_ccm_decrypt(u32 *rk, u8 *b_0, u8 *aad, u8 *cdata,
+ size_t data_len, u8 *mic, u8 *data)
+{
+ int i, j, last_len, num_blocks;
+ u8 *pos, *cpos;
+ u8 b[AES_BLOCK_LEN], s_0[AES_BLOCK_LEN], a[AES_BLOCK_LEN];
+
+ num_blocks = (data_len + AES_BLOCK_LEN - 1) / AES_BLOCK_LEN;
+ last_len = data_len % AES_BLOCK_LEN;
+ aes_ccm_prepare(rk, b_0, aad, b, s_0, a);
+
+ /* Process payload blocks */
+ cpos = cdata;
+ pos = data;
+ for (j = 1; j <= num_blocks; j++) {
+ int blen = (j == num_blocks && last_len) ?
+ last_len : AES_BLOCK_LEN;
+
+ /* Decryption followed by authentication */
+ b_0[14] = (j >> 8) & 0xff;
+ b_0[15] = j & 0xff;
+ ieee80211_aes_encrypt(rk, b_0, b);
+ for (i = 0; i < blen; i++) {
+ *pos = *cpos++ ^ b[i];
+ a[i] ^= *pos++;
+ }
+
+ ieee80211_aes_encrypt(rk, a, a);
+ }
+
+ for (i = 0; i < CCMP_MIC_LEN; i++) {
+ if ((mic[i] ^ s_0[i]) != a[i])
+ return -1;
+ }
+
+ return 0;
+}
+
--- /dev/null
+/*
+ * Copyright 2003-2004, Instant802 Networks, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef AES_CCM_H
+#define AES_CCM_H
+
+#define AES_BLOCK_LEN 16
+#define AES_STATE_LEN 44
+
+void ieee80211_aes_key_setup_encrypt(u32 rk[/*44*/], const u8 key[]);
+void ieee80211_aes_encrypt(const u32 rk[/*44*/], const u8 pt[16], u8 ct[16]);
+void ieee80211_aes_ccm_encrypt(u32 rk[/*44*/], u8 *b_0, u8 *aad, u8 *data,
+ size_t data_len, u8 *cdata, u8 *mic);
+int ieee80211_aes_ccm_decrypt(u32 rk[/*44*/], u8 *b_0, u8 *aad, u8 *cdata,
+ size_t data_len, u8 *mic, u8 *data);
+
+#endif /* AES_CCM_H */
--- /dev/null
+/*
+ * Copyright 2005, Devicescape Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * If building without CONFIG_NET_SCHED we need a simple
+ * fifo qdisc to install by default as the sub-qdisc.
+ * This is a simple replacement for sch_fifo.
+ */
+
+#include <linux/config.h>
+#include <linux/version.h>
+#include <linux/netdevice.h>
+#include <net/ieee80211.h>
+#include "ieee80211_i.h"
+#include "wme.h"
+
+static int pfifo_enqueue(struct sk_buff *skb, struct Qdisc* qd)
+{
+ struct sk_buff_head *q = qdisc_priv(qd);
+
+ if (skb_queue_len(q) > qd->dev->tx_queue_len) {
+ qd->qstats.drops++;
+ kfree_skb(skb);
+ return NET_XMIT_DROP;
+ }
+
+ skb_queue_tail(q, skb);
+ qd->q.qlen++;
+ qd->bstats.bytes += skb->len;
+ qd->bstats.packets++;
+
+ return NET_XMIT_SUCCESS;
+}
+
+
+static int pfifo_requeue(struct sk_buff *skb, struct Qdisc* qd)
+{
+ struct sk_buff_head *q = qdisc_priv(qd);
+
+ skb_queue_head(q, skb);
+ qd->q.qlen++;
+ qd->bstats.bytes += skb->len;
+ qd->bstats.packets++;
+
+ return NET_XMIT_SUCCESS;
+}
+
+
+static struct sk_buff *pfifo_dequeue(struct Qdisc* qd)
+{
+ struct sk_buff_head *q = qdisc_priv(qd);
+
+ return skb_dequeue(q);
+}
+
+
+static int pfifo_init(struct Qdisc* qd, struct rtattr *opt)
+{
+ struct sk_buff_head *q = qdisc_priv(qd);
+
+ skb_queue_head_init(q);
+ return 0;
+}
+
+
+static void pfifo_reset(struct Qdisc* qd)
+{
+ struct sk_buff_head *q = qdisc_priv(qd);
+
+ skb_queue_purge(q);
+ qd->q.qlen = 0;
+}
+
+
+static int pfifo_dump(struct Qdisc *qd, struct sk_buff *skb)
+{
+ return skb->len;
+}
+
+
+struct Qdisc_ops pfifo_qdisc_ops =
+{
+ .next = NULL,
+ .cl_ops = NULL,
+ .id = "ieee80211_pfifo",
+ .priv_size = sizeof(struct sk_buff_head),
+
+ .enqueue = pfifo_enqueue,
+ .dequeue = pfifo_dequeue,
+ .requeue = pfifo_requeue,
+ .drop = NULL,
+
+ .init = pfifo_init,
+ .reset = pfifo_reset,
+ .destroy = NULL,
+ .change = NULL,
+
+ .dump = pfifo_dump,
+};
+
--- /dev/null
+/*
+ * Host AP (software wireless LAN access point) user space daemon for
+ * Host AP kernel driver
+ * Copyright 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
+ * Copyright 2002-2004, Instant802 Networks, Inc.
+ * Copyright 2005, Devicescape Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef HOSTAPD_IOCTL_H
+#define HOSTAPD_IOCTL_H
+
+#ifndef __KERNEL__
+#include "ieee80211_shared.h"
+#endif /* __KERNEL__ */
+
+#define PRISM2_IOCTL_PRISM2_PARAM (SIOCIWFIRSTPRIV + 0)
+#define PRISM2_IOCTL_GET_PRISM2_PARAM (SIOCIWFIRSTPRIV + 1)
+#define PRISM2_IOCTL_HOSTAPD (SIOCIWFIRSTPRIV + 3)
+#define PRISM2_IOCTL_TEST_PARAM (SIOCIWFIRSTPRIV + 4)
+
+/* PRISM2_IOCTL_PRISM2_PARAM ioctl() subtypes: */
+enum {
+ PRISM2_PARAM_PTYPE = 1,
+ PRISM2_PARAM_TXRATECTRL = 2,
+ PRISM2_PARAM_BEACON_INT = 3,
+ PRISM2_PARAM_PSEUDO_IBSS = 4,
+ PRISM2_PARAM_ALC = 5,
+ PRISM2_PARAM_TXPOWER = 6,
+ PRISM2_PARAM_DUMP = 7,
+ PRISM2_PARAM_OTHER_AP_POLICY = 8,
+ PRISM2_PARAM_AP_MAX_INACTIVITY = 9,
+ PRISM2_PARAM_AP_BRIDGE_PACKETS = 10,
+ PRISM2_PARAM_DTIM_PERIOD = 11,
+ PRISM2_PARAM_AP_NULLFUNC_ACK = 12,
+ PRISM2_PARAM_MAX_WDS = 13,
+ PRISM2_PARAM_AP_AUTOM_AP_WDS = 14,
+ PRISM2_PARAM_AP_AUTH_ALGS = 15,
+ PRISM2_PARAM_MONITOR_ALLOW_FCSERR = 16,
+ PRISM2_PARAM_HOST_ENCRYPT = 17,
+ PRISM2_PARAM_HOST_DECRYPT = 18,
+ PRISM2_PARAM_BUS_MASTER_THRESHOLD_RX = 19,
+ PRISM2_PARAM_BUS_MASTER_THRESHOLD_TX = 20,
+ PRISM2_PARAM_HOST_ROAMING = 21,
+ PRISM2_PARAM_BCRX_STA_KEY = 22,
+ PRISM2_PARAM_IEEE_802_1X = 23,
+ PRISM2_PARAM_ANTSEL_TX = 24,
+ PRISM2_PARAM_ANTSEL_RX = 25,
+ PRISM2_PARAM_MONITOR_TYPE = 26,
+ PRISM2_PARAM_WDS_TYPE = 27,
+ PRISM2_PARAM_HOSTSCAN = 28,
+ PRISM2_PARAM_AP_SCAN = 29,
+
+ /* Instant802 additions */
+ PRISM2_PARAM_CTS_PROTECT_ERP_FRAMES = 1001,
+ PRISM2_PARAM_DROP_UNENCRYPTED = 1002,
+ PRISM2_PARAM_PREAMBLE = 1003,
+ PRISM2_PARAM_RATE_LIMIT = 1004,
+ PRISM2_PARAM_RATE_LIMIT_BURST = 1005,
+ PRISM2_PARAM_SHORT_SLOT_TIME = 1006,
+ PRISM2_PARAM_TEST_MODE = 1007,
+ PRISM2_PARAM_NEXT_MODE = 1008,
+ PRISM2_PARAM_CLEAR_KEYS = 1009,
+ PRISM2_PARAM_ADM_STATUS = 1010,
+ PRISM2_PARAM_ANTENNA_SEL = 1011,
+ PRISM2_PARAM_CALIB_INT = 1012,
+ PRISM2_PARAM_ANTENNA_MODE = 1013,
+ PRISM2_PARAM_PRIVACY_INVOKED = 1014,
+ PRISM2_PARAM_BROADCAST_SSID = 1015,
+ PRISM2_PARAM_STAT_TIME = 1016,
+ PRISM2_PARAM_STA_ANTENNA_SEL = 1017,
+ PRISM2_PARAM_FORCE_UNICAST_RATE = 1018,
+ PRISM2_PARAM_RATE_CTRL_NUM_UP = 1019,
+ PRISM2_PARAM_RATE_CTRL_NUM_DOWN = 1020,
+ PRISM2_PARAM_MAX_RATECTRL_RATE = 1021,
+ PRISM2_PARAM_TX_POWER_REDUCTION = 1022,
+ PRISM2_PARAM_EAPOL = 1023,
+ PRISM2_PARAM_KEY_TX_RX_THRESHOLD = 1024,
+ PRISM2_PARAM_KEY_INDEX = 1025,
+ PRISM2_PARAM_DEFAULT_WEP_ONLY = 1026,
+ PRISM2_PARAM_WIFI_WME_NOACK_TEST = 1033,
+ PRISM2_PARAM_ALLOW_BROADCAST_ALWAYS = 1034,
+ PRISM2_PARAM_SCAN_FLAGS = 1035,
+ PRISM2_PARAM_HW_MODES = 1036,
+ PRISM2_PARAM_CREATE_IBSS = 1037,
+ PRISM2_PARAM_WMM_ENABLED = 1038,
+ PRISM2_PARAM_MIXED_CELL = 1039,
+ PRISM2_PARAM_KEY_MGMT = 1040,
+ PRISM2_PARAM_RADAR_DETECT = 1043,
+ PRISM2_PARAM_SPECTRUM_MGMT = 1044,
+ /* NOTE: Please try to coordinate with other active development
+ * branches before allocating new param numbers so that each new param
+ * will be unique within all branches and the allocated number will not
+ * need to be changed when merging new features. Existing numbers in
+ * the mainline (or main devel branch) must not be changed when merging
+ * in new features. */
+};
+
+/* PRISM2_IOCTL_HOSTAPD ioctl() cmd: */
+enum {
+ PRISM2_HOSTAPD_FLUSH = 1,
+ PRISM2_HOSTAPD_ADD_STA = 2,
+ PRISM2_HOSTAPD_REMOVE_STA = 3,
+ PRISM2_HOSTAPD_GET_INFO_STA = 4,
+ /* REMOVED: PRISM2_HOSTAPD_RESET_TXEXC_STA = 5, */
+ PRISM2_SET_ENCRYPTION = 6,
+ PRISM2_GET_ENCRYPTION = 7,
+ PRISM2_HOSTAPD_SET_FLAGS_STA = 8,
+ PRISM2_HOSTAPD_GET_RID = 9,
+ PRISM2_HOSTAPD_SET_RID = 10,
+ PRISM2_HOSTAPD_SET_ASSOC_AP_ADDR = 11,
+ PRISM2_HOSTAPD_MLME = 13,
+
+ /* Instant802 additions */
+ PRISM2_HOSTAPD_SET_BEACON = 1001,
+ PRISM2_HOSTAPD_GET_HW_FEATURES = 1002,
+ PRISM2_HOSTAPD_SCAN = 1003,
+ PRISM2_HOSTAPD_WPA_TRIGGER = 1004,
+ PRISM2_HOSTAPD_SET_RATE_SETS = 1005,
+ PRISM2_HOSTAPD_ADD_IF = 1006,
+ PRISM2_HOSTAPD_REMOVE_IF = 1007,
+ PRISM2_HOSTAPD_GET_DOT11COUNTERSTABLE = 1008,
+ PRISM2_HOSTAPD_GET_LOAD_STATS = 1009,
+ PRISM2_HOSTAPD_SET_STA_VLAN = 1010,
+ PRISM2_HOSTAPD_SET_GENERIC_INFO_ELEM = 1011,
+ PRISM2_HOSTAPD_SET_CHANNEL_FLAG = 1012,
+ PRISM2_HOSTAPD_SET_REGULATORY_DOMAIN = 1013,
+ PRISM2_HOSTAPD_SET_TX_QUEUE_PARAMS = 1014,
+ PRISM2_HOSTAPD_SET_BSS = 1015,
+ PRISM2_HOSTAPD_GET_TX_STATS = 1016,
+ PRISM2_HOSTAPD_UPDATE_IF = 1017,
+ PRISM2_HOSTAPD_SCAN_REQ = 1019,
+ PRISM2_STA_GET_STATE = 1020,
+ PRISM2_HOSTAPD_FLUSH_IFS = 1021,
+ PRISM2_HOSTAPD_SET_RADAR_PARAMS = 1023,
+ PRISM2_HOSTAPD_SET_QUIET_PARAMS = 1024,
+ PRISM2_HOSTAPD_GET_TX_POWER = 1025,
+ /* NOTE: Please try to coordinate with other active development
+ * branches before allocating new param numbers so that each new param
+ * will be unique within all branches and the allocated number will not
+ * need to be changed when merging new features. Existing numbers in
+ * the mainline (or main devel branch) must not be changed when merging
+ * in new features. */
+};
+
+ /* these definitions mirror the ieee80211_i.h
+ * IEEE80211_DISABLED, ... IEEE80211_ASSOCIATED enumeration */
+enum {
+ PRISM2_PARAM_STA_DISABLED,
+ PRISM2_PARAM_STA_AUTHENTICATE,
+ PRISM2_PARAM_STA_ASSOCIATE,
+ PRISM2_PARAM_STA_ASSOCIATED,
+};
+
+#define PRISM2_HOSTAPD_MAX_BUF_SIZE 2048
+#define HOSTAP_CRYPT_ALG_NAME_LEN 16
+
+/* Use this to make sure that structure elements are correctly aligned
+ * for access as other types. Most commonly, this affects the placeholder
+ * types used for data at the end of a structure in this union.
+ */
+#ifdef __GNUC__
+#undef ALIGNED
+#define ALIGNED __attribute__ ((aligned))
+#else
+/* Check if it has been defined elsewhere */
+#ifndef ALIGNED
+#error "Must define ALIGNED to generate aligned structure elements"
+#endif
+#endif
+
+struct prism2_hostapd_param {
+ u32 cmd;
+ u8 sta_addr[ETH_ALEN];
+ u8 pad[2];
+ union {
+ struct {
+ u16 aid;
+ u16 capability;
+ u8 supp_rates[32];
+ /* atheros_super_ag and enc_flags are only used with
+ * IEEE80211_ATHEROS_SUPER_AG
+ */
+ u8 atheros_super_ag;
+ u8 atheros_xr_mode;
+ u8 wds_flags;
+#define IEEE80211_STA_DYNAMIC_ENC BIT(0)
+ u8 enc_flags;
+ } add_sta;
+ struct {
+ u32 inactive_msec;
+ u32 rx_packets;
+ u32 tx_packets;
+ u32 rx_bytes;
+ u32 tx_bytes;
+ u32 current_tx_rate; /* in 100 kbps */
+ u32 channel_use;
+ u32 flags;
+ u32 num_ps_buf_frames;
+ u32 tx_retry_failed;
+ u32 tx_retry_count;
+ u32 last_rssi;
+ u32 last_ack_rssi;
+ } get_info_sta;
+ struct {
+ u8 alg[HOSTAP_CRYPT_ALG_NAME_LEN];
+ u32 flags;
+ u32 err;
+ u8 idx;
+#define HOSTAP_SEQ_COUNTER_SIZE 8
+ u8 seq_counter[HOSTAP_SEQ_COUNTER_SIZE];
+ u16 key_len;
+ u8 key[0] ALIGNED;
+ } crypt;
+ struct {
+ u32 flags_and;
+ u32 flags_or;
+ } set_flags_sta;
+ struct {
+ u16 rid;
+ u16 len;
+ u8 data[0] ALIGNED;
+ } rid;
+ struct {
+ u16 head_len;
+ u16 tail_len;
+ u8 data[0] ALIGNED; /* head_len + tail_len bytes */
+ } beacon;
+ struct {
+ u16 num_modes;
+ u16 flags;
+ u8 data[0] ALIGNED; /* num_modes * feature data */
+ } hw_features;
+ struct {
+ u8 now;
+ s8 our_mode_only;
+ s16 last_rx;
+ u16 channel;
+ s16 interval; /* seconds */
+ s32 listen; /* microseconds */
+ } scan;
+ struct {
+#define WPA_TRIGGER_FAIL_TX_MIC BIT(0)
+#define WPA_TRIGGER_FAIL_TX_ICV BIT(1)
+#define WPA_TRIGGER_FAIL_RX_MIC BIT(2)
+#define WPA_TRIGGER_FAIL_RX_ICV BIT(3)
+#define WPA_TRIGGER_TX_REPLAY BIT(4)
+#define WPA_TRIGGER_TX_REPLAY_FRAG BIT(5)
+#define WPA_TRIGGER_TX_SKIP_SEQ BIT(6)
+ u32 trigger;
+ } wpa_trigger;
+ struct {
+ u16 mode; /* MODE_* */
+ u16 num_supported_rates;
+ u16 num_basic_rates;
+ u8 data[0] ALIGNED; /* num_supported_rates * u16 +
+ * num_basic_rates * u16 */
+ } set_rate_sets;
+ struct {
+ u8 type; /* WDS, VLAN, etc */
+ u8 name[IFNAMSIZ];
+ u8 data[0] ALIGNED;
+ } if_info;
+ struct dot11_counters {
+ u32 dot11TransmittedFragmentCount;
+ u32 dot11MulticastTransmittedFrameCount;
+ u32 dot11FailedCount;
+ u32 dot11ReceivedFragmentCount;
+ u32 dot11MulticastReceivedFrameCount;
+ u32 dot11FCSErrorCount;
+ u32 dot11TransmittedFrameCount;
+ u32 dot11WEPUndecryptableCount;
+ u32 dot11ACKFailureCount;
+ u32 dot11RTSFailureCount;
+ u32 dot11RTSSuccessCount;
+ } dot11CountersTable;
+ struct {
+#define LOAD_STATS_CLEAR BIT(1)
+ u32 flags;
+ u32 channel_use;
+ } get_load_stats;
+ struct {
+ char vlan_name[IFNAMSIZ];
+ int vlan_id;
+ } set_sta_vlan;
+ struct {
+ u8 len;
+ u8 data[0] ALIGNED;
+ } set_generic_info_elem;
+ struct {
+ u16 mode; /* MODE_* */
+ u16 chan;
+ u32 flag;
+ u8 power_level; /* regulatory limit in dBm */
+ u8 antenna_max;
+ } set_channel_flag;
+ struct {
+ u32 rd;
+ } set_regulatory_domain;
+ struct {
+ u32 queue;
+ s32 aifs;
+ u32 cw_min;
+ u32 cw_max;
+ u32 burst_time; /* maximum burst time in 0.1 ms, i.e.,
+ * 10 = 1 ms */
+ } tx_queue_params;
+ struct {
+ u32 bss_count;
+ u8 bssid_mask[ETH_ALEN];
+ } set_bss;
+ struct ieee80211_tx_stats {
+ struct {
+ unsigned int len; /* num packets in queue */
+ unsigned int limit; /* queue len (soft) limit
+ */
+ unsigned int count; /* total num frames sent */
+ } data[4];
+ } get_tx_stats;
+ struct {
+ u8 ssid_len;
+ u8 ssid[0] ALIGNED;
+ } scan_req;
+ struct {
+ u32 state;
+ } sta_get_state;
+ struct {
+#define MLME_STA_DEAUTH 0
+#define MLME_STA_DISASSOC 1
+ u16 cmd;
+ u16 reason_code;
+ } mlme;
+ struct {
+ unsigned int value;
+ /* TODO
+ int pulse_width;
+ int num_pulse;
+ int period;
+ */
+ }radar;
+ struct {
+ unsigned int period;
+ unsigned int offset;
+ unsigned int duration;
+ }quiet;
+ struct {
+ unsigned int tx_power_min;
+ unsigned int tx_power_max;
+ }tx_power;
+ struct {
+ u8 dummy[80]; /* Make sizeof() this struct large enough
+ * with some compiler versions. */
+ } dummy;
+ } u;
+};
+
+
+#ifndef IEEE80211_TX_QUEUE_NUMS
+#define IEEE80211_TX_QUEUE_NUMS
+/* TODO: these need to be synchronized with ieee80211.h; make a shared header
+ * file that can be included into low-level drivers, 80211.o, and hostapd */
+/* tx_queue_params - queue */
+enum {
+ IEEE80211_TX_QUEUE_DATA0 = 0, /* used for EDCA AC_VO data */
+ IEEE80211_TX_QUEUE_DATA1 = 1, /* used for EDCA AC_VI data */
+ IEEE80211_TX_QUEUE_DATA2 = 2, /* used for EDCA AC_BE data */
+ IEEE80211_TX_QUEUE_DATA3 = 3, /* used for EDCA AC_BK data */
+ IEEE80211_TX_QUEUE_DATA4 = 4,
+ IEEE80211_TX_QUEUE_AFTER_BEACON = 6,
+ IEEE80211_TX_QUEUE_BEACON = 7
+};
+#endif /* IEEE80211_TX_QUEUE_NUMS */
+
+
+#define HOSTAP_CRYPT_FLAG_SET_TX_KEY BIT(0)
+#define HOSTAP_CRYPT_FLAG_PERMANENT BIT(1)
+
+#define HOSTAP_CRYPT_ERR_UNKNOWN_ALG 2
+#define HOSTAP_CRYPT_ERR_UNKNOWN_ADDR 3
+#define HOSTAP_CRYPT_ERR_CRYPT_INIT_FAILED 4
+#define HOSTAP_CRYPT_ERR_KEY_SET_FAILED 5
+#define HOSTAP_CRYPT_ERR_TX_KEY_SET_FAILED 6
+#define HOSTAP_CRYPT_ERR_CARD_CONF_FAILED 7
+
+#define HOSTAP_HW_FLAG_NULLFUNC_OK BIT(0)
+
+enum {
+ IEEE80211_KEY_MGMT_NONE = 0,
+ IEEE80211_KEY_MGMT_IEEE8021X = 1,
+ IEEE80211_KEY_MGMT_WPA_PSK = 2,
+ IEEE80211_KEY_MGMT_WPA_EAP = 3,
+};
+
+
+/* Data structures used for get_hw_features ioctl */
+struct hostapd_ioctl_hw_modes_hdr {
+ int mode;
+ int num_channels;
+ int num_rates;
+};
+
+struct ieee80211_channel_data {
+ short chan; /* channel number (IEEE 802.11) */
+ short freq; /* frequency in MHz */
+ int flag; /* flag for hostapd use (IEEE80211_CHAN_*) */
+};
+
+struct ieee80211_rate_data {
+ int rate; /* rate in 100 kbps */
+ int flags; /* IEEE80211_RATE_ flags */
+};
+
+
+/* ADD_IF, REMOVE_IF, and UPDATE_IF 'type' argument */
+enum {
+ HOSTAP_IF_WDS = 1, HOSTAP_IF_VLAN = 2, HOSTAP_IF_BSS = 3,
+ HOSTAP_IF_STA = 4
+};
+
+struct hostapd_if_wds {
+ u8 remote_addr[ETH_ALEN];
+};
+
+struct hostapd_if_vlan {
+ u8 id;
+};
+
+struct hostapd_if_bss {
+ u8 bssid[ETH_ALEN];
+};
+
+struct hostapd_if_sta {
+};
+
+#endif /* HOSTAPD_IOCTL_H */
--- /dev/null
+/*
+ * Copyright 2002-2005, Instant802 Networks, Inc.
+ * Copyright 2005, Devicescape Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef EXPORT_SYMTAB
+#define EXPORT_SYMTAB
+#endif
+
+#include <linux/config.h>
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/skbuff.h>
+#include <linux/etherdevice.h>
+#include <linux/if_arp.h>
+#include <linux/wireless.h>
+#include <net/iw_handler.h>
+#include <linux/compiler.h>
+
+#include <net/ieee80211.h>
+#include <net/ieee80211_common.h>
+#include <net/ieee80211_mgmt.h>
+#include "ieee80211_i.h"
+#include "ieee80211_proc.h"
+#include "rate_control.h"
+#include "wep.h"
+#include "wpa.h"
+#include "tkip.h"
+#include "wme.h"
+
+
+/* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */
+/* Ethernet-II snap header (RFC1042 for most EtherTypes) */
+static unsigned char rfc1042_header[] =
+{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
+/* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
+static unsigned char bridge_tunnel_header[] =
+{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 };
+/* No encapsulation header if EtherType < 0x600 (=length) */
+
+static unsigned char eapol_header[] =
+{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00, 0x88, 0x8e };
+
+
+struct rate_control_algs {
+ struct rate_control_algs *next;
+ struct rate_control_ops *ops;
+};
+
+static struct rate_control_algs *ieee80211_rate_ctrl_algs;
+
+static int rate_control_initialize(struct ieee80211_local *local);
+
+
+static u8 * ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len);
+
+
+struct ieee80211_key_conf *
+ieee80211_key_data2conf(struct ieee80211_local *local,
+ struct ieee80211_key *data)
+{
+ struct ieee80211_key_conf *conf;
+
+ conf = kmalloc(sizeof(*conf) + data->keylen, GFP_ATOMIC);
+ if (conf == NULL)
+ return NULL;
+
+ conf->hw_key_idx = data->hw_key_idx;
+ conf->alg = data->alg;
+ conf->keylen = data->keylen;
+ conf->force_sw_encrypt = data->force_sw_encrypt;
+ conf->keyidx = data->keyidx;
+ conf->default_tx_key = data->default_tx_key;
+ conf->default_wep_only = local->default_wep_only;
+ memcpy(conf->key, data->key, data->keylen);
+
+ return conf;
+}
+
+
+static int rate_list_match(int *rate_list, int rate)
+{
+ int i;
+
+ if (rate_list == NULL)
+ return 0;
+
+ for (i = 0; rate_list[i] >= 0; i++)
+ if (rate_list[i] == rate)
+ return 1;
+
+ return 0;
+}
+
+
+void ieee80211_prepare_rates(struct net_device *dev)
+{
+ struct ieee80211_local *local = dev->priv;
+ int i;
+
+ for (i = 0; i < local->num_curr_rates; i++) {
+ struct ieee80211_rate *rate = &local->curr_rates[i];
+
+ rate->flags &= ~(IEEE80211_RATE_SUPPORTED |
+ IEEE80211_RATE_BASIC);
+
+ if (local->supp_rates[local->conf.phymode]) {
+ if (!rate_list_match(local->supp_rates
+ [local->conf.phymode],
+ rate->rate))
+ continue;
+ }
+
+ rate->flags |= IEEE80211_RATE_SUPPORTED;
+
+ /* Use configured basic rate set if it is available. If not,
+ * use defaults that are sane for most cases. */
+ if (local->basic_rates[local->conf.phymode]) {
+ if (rate_list_match(local->basic_rates
+ [local->conf.phymode],
+ rate->rate))
+ rate->flags |= IEEE80211_RATE_BASIC;
+ } else switch (local->conf.phymode) {
+ case MODE_IEEE80211A:
+ if (rate->rate == 60 || rate->rate == 120 ||
+ rate->rate == 240)
+ rate->flags |= IEEE80211_RATE_BASIC;
+ break;
+ case MODE_IEEE80211B:
+ if (rate->rate == 10 || rate->rate == 20)
+ rate->flags |= IEEE80211_RATE_BASIC;
+ break;
+ case MODE_ATHEROS_TURBO:
+ if (rate->rate == 120 || rate->rate == 240 ||
+ rate->rate == 480)
+ rate->flags |= IEEE80211_RATE_BASIC;
+ break;
+ case MODE_IEEE80211G:
+ if (rate->rate == 10 || rate->rate == 20 ||
+ rate->rate == 55 || rate->rate == 110)
+ rate->flags |= IEEE80211_RATE_BASIC;
+ break;
+ }
+
+ /* Set ERP and MANDATORY flags based on phymode */
+ switch (local->conf.phymode) {
+ case MODE_IEEE80211A:
+ if (rate->rate == 60 || rate->rate == 120 ||
+ rate->rate == 240)
+ rate->flags |= IEEE80211_RATE_MANDATORY;
+ break;
+ case MODE_IEEE80211B:
+ if (rate->rate == 10)
+ rate->flags |= IEEE80211_RATE_MANDATORY;
+ break;
+ case MODE_ATHEROS_TURBO:
+ break;
+ case MODE_IEEE80211G:
+ if (rate->rate == 10 || rate->rate == 20 ||
+ rate->rate == 55 || rate->rate == 110 ||
+ rate->rate == 60 || rate->rate == 120 ||
+ rate->rate == 240)
+ rate->flags |= IEEE80211_RATE_MANDATORY;
+ if (rate->rate != 10 && rate->rate != 20 &&
+ rate->rate != 55 && rate->rate != 110)
+ rate->flags |= IEEE80211_RATE_ERP;
+ break;
+ }
+ }
+}
+
+
+static void ieee80211_key_threshold_notify(struct net_device *dev,
+ struct ieee80211_key *key,
+ struct sta_info *sta)
+{
+ struct sk_buff *skb;
+ struct ieee80211_msg_key_notification *msg;
+
+ skb = dev_alloc_skb(sizeof(struct ieee80211_frame_info) +
+ sizeof(struct ieee80211_msg_key_notification));
+ if (skb == NULL)
+ return;
+
+ skb_reserve(skb, sizeof(struct ieee80211_frame_info));
+ msg = (struct ieee80211_msg_key_notification *)
+ skb_put(skb, sizeof(struct ieee80211_msg_key_notification));
+ msg->tx_rx_count = key->tx_rx_count;
+ memcpy(msg->ifname, dev->name, IFNAMSIZ);
+ if (sta)
+ memcpy(msg->addr, sta->addr, ETH_ALEN);
+ else
+ memset(msg->addr, 0xff, ETH_ALEN);
+
+ key->tx_rx_count = 0;
+
+ ieee80211_rx_mgmt(dev, skb, 0,
+ ieee80211_msg_key_threshold_notification);
+}
+
+
+int ieee80211_get_hdrlen(u16 fc)
+{
+ int hdrlen = 24;
+
+ switch (WLAN_FC_GET_TYPE(fc)) {
+ case WLAN_FC_TYPE_DATA:
+ if ((fc & WLAN_FC_FROMDS) && (fc & WLAN_FC_TODS))
+ hdrlen = 30; /* Addr4 */
+ if (WLAN_FC_GET_STYPE(fc) & 0x08)
+ hdrlen += 2; /* QoS Control Field */
+ break;
+ case WLAN_FC_TYPE_CTRL:
+ switch (WLAN_FC_GET_STYPE(fc)) {
+ case WLAN_FC_STYPE_CTS:
+ case WLAN_FC_STYPE_ACK:
+ hdrlen = 10;
+ break;
+ default:
+ hdrlen = 16;
+ break;
+ }
+ break;
+ }
+
+ return hdrlen;
+}
+
+
+int ieee80211_get_hdrlen_from_skb(struct sk_buff *skb)
+{
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ int hdrlen;
+
+ if (unlikely(skb->len < 10))
+ return 0;
+ hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_control));
+ if (unlikely(hdrlen > skb->len))
+ return 0;
+ return hdrlen;
+}
+
+
+#ifdef IEEE80211_VERBOSE_DEBUG_FRAME_DUMP
+static void ieee80211_dump_frame(const char *ifname, const char *title,
+ struct sk_buff *skb)
+{
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ u16 fc;
+ int hdrlen;
+
+ printk(KERN_DEBUG "%s: %s (len=%d)", ifname, title, skb->len);
+ if (skb->len < 4) {
+ printk("\n");
+ return;
+ }
+
+ fc = le16_to_cpu(hdr->frame_control);
+ hdrlen = ieee80211_get_hdrlen(fc);
+ if (hdrlen > skb->len)
+ hdrlen = skb->len;
+ if (hdrlen >= 4)
+ printk(" FC=0x%04x DUR=0x%04x",
+ fc, le16_to_cpu(hdr->duration_id));
+ if (hdrlen >= 10)
+ printk(" A1=" MACSTR, MAC2STR(hdr->addr1));
+ if (hdrlen >= 16)
+ printk(" A2=" MACSTR, MAC2STR(hdr->addr2));
+ if (hdrlen >= 24)
+ printk(" A3=" MACSTR, MAC2STR(hdr->addr3));
+ if (hdrlen >= 30)
+ printk(" A4=" MACSTR, MAC2STR(hdr->addr4));
+ printk("\n");
+}
+#else /* IEEE80211_VERBOSE_DEBUG_FRAME_DUMP */
+static inline void ieee80211_dump_frame(const char *ifname, const char *title,
+ struct sk_buff *skb)
+{
+}
+#endif /* IEEE80211_VERBOSE_DEBUG_FRAME_DUMP */
+
+
+static int ieee80211_is_eapol(struct sk_buff *skb)
+{
+ struct ieee80211_hdr *hdr;
+ u16 fc;
+ int hdrlen;
+
+ if (unlikely(skb->len < 10))
+ return 0;
+
+ hdr = (struct ieee80211_hdr *) skb->data;
+ fc = le16_to_cpu(hdr->frame_control);
+
+ if (unlikely(!WLAN_FC_DATA_PRESENT(fc)))
+ return 0;
+
+ hdrlen = ieee80211_get_hdrlen(fc);
+
+ if (unlikely(skb->len >= hdrlen + sizeof(eapol_header) &&
+ memcmp(skb->data + hdrlen, eapol_header,
+ sizeof(eapol_header)) == 0))
+ return 1;
+
+ return 0;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_tx_h_rate_ctrl(struct ieee80211_txrx_data *tx)
+{
+ struct rate_control_extra extra;
+
+ memset(&extra, 0, sizeof(extra));
+ extra.mgmt_data = tx->sdata &&
+ tx->sdata->type == IEEE80211_SUB_IF_TYPE_MGMT;
+ extra.ethertype = tx->ethertype;
+ extra.startidx = 0;
+ extra.endidx = tx->local->num_curr_rates;
+
+
+ tx->u.tx.rate = rate_control_get_rate(tx->dev, tx->skb, &extra);
+ if (unlikely(extra.probe != NULL)) {
+ tx->u.tx.control->rate_ctrl_probe = 1;
+ tx->u.tx.probe_last_frag = 1;
+// tx->u.tx.control->alt_retry_rate = tx->u.tx.rate->val;
+ tx->u.tx.rate = extra.probe;
+ } else {
+// tx->u.tx.control->alt_retry_rate = -1;
+ }
+ if (!tx->u.tx.rate)
+ return TXRX_DROP;
+ if (tx->local->conf.phymode == MODE_IEEE80211G &&
+ tx->local->cts_protect_erp_frames && tx->fragmented &&
+ extra.nonerp) {
+ tx->u.tx.last_frag_rate = tx->u.tx.rate;
+ tx->u.tx.last_frag_rateidx = extra.rateidx;
+ tx->u.tx.probe_last_frag = extra.probe ? 1 : 0;
+
+ tx->u.tx.rate = extra.nonerp;
+// tx->u.tx.control->rateidx = extra.nonerp_idx;
+ tx->u.tx.control->rate_ctrl_probe = 0;
+ } else {
+ tx->u.tx.last_frag_rate = tx->u.tx.rate;
+ tx->u.tx.last_frag_rateidx = extra.rateidx;
+// tx->u.tx.control->rateidx = extra.rateidx;
+ }
+ tx->u.tx.control->tx_rate = tx->u.tx.rate->val;
+ if ((tx->u.tx.rate->flags & IEEE80211_RATE_PREAMBLE2) &&
+ tx->local->short_preamble &&
+ (!tx->sta || (tx->sta->flags & WLAN_STA_SHORT_PREAMBLE))) {
+ tx->u.tx.short_preamble = 1;
+ tx->u.tx.control->tx_rate = tx->u.tx.rate->val2;
+ }
+
+ return TXRX_CONTINUE;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_tx_h_select_key(struct ieee80211_txrx_data *tx)
+{
+ if (tx->sta)
+ tx->u.tx.control->key_idx = tx->sta->key_idx_compression;
+ else
+ tx->u.tx.control->key_idx = HW_KEY_IDX_INVALID;
+
+ if (unlikely(tx->u.tx.control->do_not_encrypt))
+ tx->key = NULL;
+ else if (tx->sta && tx->sta->key)
+ tx->key = tx->sta->key;
+ else if (tx->sdata->default_key)
+ tx->key = tx->sdata->default_key;
+ else if (tx->sdata->drop_unencrypted && !(tx->sdata->eapol && ieee80211_is_eapol(tx->skb))) {
+ I802_DEBUG_INC(tx->local->tx_handlers_drop_unencrypted);
+ return TXRX_DROP;
+ } else
+ tx->key = NULL;
+
+ if (tx->key) {
+ tx->key->tx_rx_count++;
+ if (unlikely(tx->local->key_tx_rx_threshold &&
+ tx->key->tx_rx_count >
+ tx->local->key_tx_rx_threshold)) {
+ ieee80211_key_threshold_notify(tx->dev, tx->key,
+ tx->sta);
+ }
+ }
+
+ return TXRX_CONTINUE;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_tx_h_fragment(struct ieee80211_txrx_data *tx)
+{
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) tx->skb->data;
+ size_t hdrlen, per_fragm, num_fragm, payload_len, left;
+ struct sk_buff **frags, *first, *frag;
+ int i;
+ u8 *pos;
+ int frag_threshold = tx->local->fragmentation_threshold;
+
+ if (!tx->fragmented)
+ return TXRX_CONTINUE;
+
+
+ first = tx->skb;
+
+ hdrlen = ieee80211_get_hdrlen(tx->fc);
+ payload_len = first->len - hdrlen;
+ per_fragm = frag_threshold - hdrlen - 4 /* FCS */;
+ num_fragm = (payload_len + per_fragm - 1) / per_fragm;
+
+ frags = (struct sk_buff **)
+ kmalloc(num_fragm * sizeof(struct sk_buff *), GFP_ATOMIC);
+ if (frags == NULL)
+ goto fail;
+ memset(frags, 0, num_fragm * sizeof(struct sk_buff *));
+
+ hdr->frame_control |= cpu_to_le16(WLAN_FC_MOREFRAG);
+ pos = first->data + hdrlen + per_fragm;
+ left = payload_len - per_fragm;
+ for (i = 0; i < num_fragm - 1; i++) {
+ struct ieee80211_hdr *fhdr;
+ size_t copylen;
+
+ if (left <= 0)
+ goto fail;
+
+ /* reserve enough extra head and tail room for possible
+ * encryption */
+#define IEEE80211_ENCRYPT_HEADROOM 8
+#define IEEE80211_ENCRYPT_TAILROOM 12
+ frag = frags[i] =
+ dev_alloc_skb(frag_threshold +
+ IEEE80211_ENCRYPT_HEADROOM +
+ IEEE80211_ENCRYPT_TAILROOM);
+ if (!frag)
+ goto fail;
+ /* Make sure that all fragments use the same priority so
+ * that they end up using the same TX queue */
+ frag->priority = first->priority;
+ skb_reserve(frag, IEEE80211_ENCRYPT_HEADROOM);
+ fhdr = (struct ieee80211_hdr *) skb_put(frag, hdrlen);
+ memcpy(fhdr, first->data, hdrlen);
+ if (i == num_fragm - 2)
+ fhdr->frame_control &= cpu_to_le16(~WLAN_FC_MOREFRAG);
+ fhdr->seq_ctrl = cpu_to_le16(i + 1);
+ copylen = left > per_fragm ? per_fragm : left;
+ memcpy(skb_put(frag, copylen), pos, copylen);
+
+ pos += copylen;
+ left -= copylen;
+ }
+ skb_trim(first, hdrlen + per_fragm);
+
+ tx->u.tx.num_extra_frag = num_fragm - 1;
+ tx->u.tx.extra_frag = frags;
+
+ return TXRX_CONTINUE;
+
+ fail:
+ printk(KERN_DEBUG "%s: failed to fragment frame\n", tx->dev->name);
+ if (frags) {
+ for (i = 0; i < num_fragm - 1; i++)
+ if (frags[i])
+ dev_kfree_skb(frags[i]);
+ kfree(frags);
+ }
+ I802_DEBUG_INC(tx->local->tx_handlers_drop_fragment);
+ return TXRX_DROP;
+}
+
+
+static int wep_encrypt_skb(struct ieee80211_txrx_data *tx, struct sk_buff *skb)
+{
+ if (tx->key->force_sw_encrypt || tx->local->conf.sw_encrypt) {
+ if (ieee80211_wep_encrypt(tx->local, skb, tx->key))
+ return -1;
+ } else {
+ tx->u.tx.control->key_idx = tx->key->hw_key_idx;
+ if (tx->local->hw->wep_include_iv) {
+ if (ieee80211_wep_add_iv(tx->local, skb, tx->key) ==
+ NULL)
+ return -1;
+ }
+ }
+ return 0;
+}
+
+
+void ieee80211_tx_set_iswep(struct ieee80211_txrx_data *tx)
+{
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) tx->skb->data;
+
+ hdr->frame_control |= cpu_to_le16(WLAN_FC_ISWEP);
+ if (tx->u.tx.extra_frag) {
+ struct ieee80211_hdr *fhdr;
+ int i;
+ for (i = 0; i < tx->u.tx.num_extra_frag; i++) {
+ fhdr = (struct ieee80211_hdr *)
+ tx->u.tx.extra_frag[i]->data;
+ fhdr->frame_control |= cpu_to_le16(WLAN_FC_ISWEP);
+ }
+ }
+}
+
+
+static ieee80211_txrx_result
+ieee80211_tx_h_wep_encrypt(struct ieee80211_txrx_data *tx)
+{
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) tx->skb->data;
+ u16 fc;
+
+ fc = le16_to_cpu(hdr->frame_control);
+
+ if (!tx->key || tx->key->alg != ALG_WEP ||
+ (WLAN_FC_GET_TYPE(fc) != WLAN_FC_TYPE_DATA &&
+ (WLAN_FC_GET_TYPE(fc) != WLAN_FC_TYPE_MGMT ||
+ WLAN_FC_GET_STYPE(fc) != WLAN_FC_STYPE_AUTH)))
+ return TXRX_CONTINUE;
+
+ tx->u.tx.control->iv_len = WEP_IV_LEN;
+ tx->u.tx.control->icv_len = WEP_ICV_LEN;
+ ieee80211_tx_set_iswep(tx);
+
+ if (wep_encrypt_skb(tx, tx->skb) < 0) {
+ I802_DEBUG_INC(tx->local->tx_handlers_drop_wep);
+ return TXRX_DROP;
+ }
+
+ if (tx->u.tx.extra_frag) {
+ int i;
+ for (i = 0; i < tx->u.tx.num_extra_frag; i++) {
+ if (wep_encrypt_skb(tx, tx->u.tx.extra_frag[i]) < 0) {
+ I802_DEBUG_INC(tx->local->
+ tx_handlers_drop_wep);
+ return TXRX_DROP;
+ }
+ }
+ }
+
+ return TXRX_CONTINUE;
+}
+
+
+static inline int ceiling_div(int dividend, int divisor)
+{
+ return ((dividend + divisor - 1) / divisor);
+}
+
+
+static int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
+ int rate, int erp, int short_preamble)
+{
+ int dur;
+
+ /* calculate duration (in microseconds, rounded up to next higher
+ * integer if it includes a fractional microsecond) to send frame of
+ * len bytes (does not include FCS) at the given rate. Duration will
+ * also include SIFS.
+ *
+ * rate is in 100 kbps, so divident is multiplied by 10 in the
+ * ceiling_div() operations.
+ */
+
+ if (local->conf.phymode == MODE_IEEE80211A || erp ||
+ local->conf.phymode == MODE_ATHEROS_TURBO) {
+ /*
+ * OFDM:
+ *
+ * N_DBPS = DATARATE x 4
+ * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS)
+ * (16 = SIGNAL time, 6 = tail bits)
+ * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext
+ *
+ * T_SYM = 4 usec
+ * 802.11a - 17.5.2: aSIFSTime = 16 usec
+ * 802.11g - 19.8.4: aSIFSTime = 10 usec +
+ * signal ext = 6 usec
+ */
+ /* FIX: Atheros Turbo may have different (shorter) duration? */
+ dur = 16; /* SIFS + signal ext */
+ dur += 16; /* 17.3.2.3: T_PREAMBLE = 16 usec */
+ dur += 4; /* 17.3.2.3: T_SIGNAL = 4 usec */
+ dur += 4 * ceiling_div((16 + 8 * (len + 4) + 6) * 10,
+ 4 * rate); /* T_SYM x N_SYM */
+ } else {
+ /*
+ * 802.11b or 802.11g with 802.11b compatibility:
+ * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime +
+ * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0.
+ *
+ * 802.11 (DS): 15.3.3, 802.11b: 18.3.4
+ * aSIFSTime = 10 usec
+ * aPreambleLength = 144 usec or 72 usec with short preamble
+ * aPLCPHeaderLength = 48 ms or 24 ms with short preamble
+ */
+ dur = 10; /* aSIFSTime = 10 usec */
+ dur += short_preamble ? (72 + 24) : (144 + 48);
+
+ dur += ceiling_div(8 * (len + 4) * 10, rate);
+ }
+
+ return dur;
+}
+
+
+static u16 ieee80211_duration(struct ieee80211_txrx_data *tx, int group_addr,
+ int next_frag_len)
+{
+ int rate, mrate, erp, dur, i;
+ struct ieee80211_rate *txrate = tx->u.tx.rate;
+ struct ieee80211_local *local = tx->local;
+
+ erp = txrate->flags & IEEE80211_RATE_ERP;
+
+ /*
+ * data and mgmt (except PS Poll):
+ * - during CFP: 32768
+ * - during contention period:
+ * if addr1 is group address: 0
+ * if more fragments = 0 and addr1 is individual address: time to
+ * transmit one ACK plus SIFS
+ * if more fragments = 1 and addr1 is individual address: time to
+ * transmit next fragment plus 2 x ACK plus 3 x SIFS
+ *
+ * IEEE 802.11, 9.6:
+ * - control response frame (CTS or ACK) shall be transmitted using the
+ * same rate as the immediately previous frame in the frame exchange
+ * sequence, if this rate belongs to the PHY mandatory rates, or else
+ * at the highest possible rate belonging to the PHY rates in the
+ * BSSBasicRateSet
+ */
+
+ if (WLAN_FC_GET_TYPE(tx->fc) == WLAN_FC_TYPE_CTRL) {
+ /* TODO: These control frames are not currently sent by
+ * 80211.o, but should they be implemented, this function
+ * needs to be updated to support duration field calculation.
+ *
+ * RTS: time needed to transmit pending data/mgmt frame plus
+ * one CTS frame plus one ACK frame plus 3 x SIFS
+ * CTS: duration of immediately previous RTS minus time
+ * required to transmit CTS and its SIFS
+ * ACK: 0 if immediately previous directed data/mgmt had
+ * more=0, with more=1 duration in ACK frame is duration
+ * from previous frame minus time needed to transmit ACK
+ * and its SIFS
+ * PS Poll: BIT(15) | BIT(14) | aid
+ */
+ return 0;
+ }
+
+ /* data/mgmt */
+ if (0 /* FIX: data/mgmt during CFP */)
+ return 32768;
+
+ if (group_addr) /* Group address as the destination - no ACK */
+ return 0;
+
+ /* Individual destination address:
+ * IEEE 802.11, Ch. 9.6 (after IEEE 802.11g changes)
+ * CTS and ACK frames shall be transmitted using the highest rate in
+ * basic rate set that is less than or equal to the rate of the
+ * immediately previous frame and that is using the same modulation
+ * (CCK or OFDM). If no basic rate set matches with these requirements,
+ * the highest mandatory rate of the PHY that is less than or equal to
+ * the rate of the previous frame is used.
+ * Mandatory rates for IEEE 802.11g PHY: 1, 2, 5.5, 11, 6, 12, 24 Mbps
+ */
+ rate = -1;
+ mrate = 10; /* use 1 Mbps if everything fails */
+ for (i = 0; i < local->num_curr_rates; i++) {
+ struct ieee80211_rate *r = &local->curr_rates[i];
+ if (r->rate > txrate->rate)
+ break;
+
+ if (IEEE80211_RATE_MODULATION(txrate->flags) !=
+ IEEE80211_RATE_MODULATION(r->flags))
+ continue;
+
+ if (r->flags & IEEE80211_RATE_BASIC)
+ rate = r->rate;
+ else if (r->flags & IEEE80211_RATE_MANDATORY)
+ mrate = r->rate;
+ }
+ if (rate == -1) {
+ /* No matching basic rate found; use highest suitable mandatory
+ * PHY rate */
+ rate = mrate;
+ }
+
+ /* Time needed to transmit ACK
+ * (10 bytes + 4-byte FCS = 112 bits) plus SIFS; rounded up
+ * to closest integer */
+
+ dur = ieee80211_frame_duration(local, 10, rate, erp,
+ local->short_preamble);
+
+ if (next_frag_len) {
+ /* Frame is fragmented: duration increases with time needed to
+ * transmit next fragment plus ACK and 2 x SIFS. */
+ dur *= 2; /* ACK + SIFS */
+ /* next fragment */
+ dur += ieee80211_frame_duration(local, next_frag_len,
+ txrate->rate, erp,
+ local->short_preamble);
+ }
+
+ return dur;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_tx_h_misc(struct ieee80211_txrx_data *tx)
+{
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) tx->skb->data;
+ u16 dur;
+ struct ieee80211_tx_control *control = tx->u.tx.control;
+
+ if (!MULTICAST_ADDR(hdr->addr1)) {
+ if (tx->skb->len >= tx->local->rts_threshold &&
+ tx->local->rts_threshold < IEEE80211_MAX_RTS_THRESHOLD) {
+ control->use_rts_cts = 1;
+ control->retry_limit =
+ tx->local->long_retry_limit;
+ } else {
+ control->retry_limit =
+ tx->local->short_retry_limit;
+ }
+ } else {
+ control->retry_limit = 1;
+ }
+
+ if (tx->fragmented) {
+ /* Do not use multiple retry rates when sending fragmented
+ * frames.
+ * TODO: The last fragment could still use multiple retry
+ * rates. */
+// control->alt_retry_rate = -1;
+ }
+
+ /* Use CTS protection for unicast frames sent using extended rates if
+ * there are associated non-ERP stations and RTS/CTS is not configured
+ * for the frame. */
+ if (tx->local->conf.phymode == MODE_IEEE80211G &&
+ (tx->u.tx.rate->flags & IEEE80211_RATE_ERP) &&
+ tx->u.tx.unicast &&
+ tx->local->cts_protect_erp_frames &&
+ !control->use_rts_cts)
+ control->use_cts_protect = 1;
+
+
+ /* Setup duration field for the first fragment of the frame. Duration
+ * for remaining fragments will be updated when they are being sent
+ * to low-level driver in ieee80211_tx(). */
+ dur = ieee80211_duration(tx, MULTICAST_ADDR(hdr->addr1),
+ tx->fragmented ? tx->u.tx.extra_frag[0]->len :
+ 0);
+ hdr->duration_id = cpu_to_le16(dur);
+
+ if (control->use_rts_cts || control->use_cts_protect) {
+ struct ieee80211_rate *rate;
+ int erp = tx->u.tx.rate->flags & IEEE80211_RATE_ERP;
+
+ /* Do not use multiple retry rates when using RTS/CTS */
+// control->alt_retry_rate = -1;
+
+ /* Use min(data rate, max base rate) as CTS/RTS rate */
+ rate = tx->u.tx.rate;
+ while (rate > tx->local->curr_rates &&
+ !(rate->flags & IEEE80211_RATE_BASIC))
+ rate--;
+
+
+ if (control->use_rts_cts)
+ dur += ieee80211_frame_duration(tx->local, 10,
+ rate->rate, erp,
+ tx->local->
+ short_preamble);
+ dur += ieee80211_frame_duration(tx->local, tx->skb->len,
+ tx->u.tx.rate->rate, erp,
+ tx->u.tx.short_preamble);
+ control->rts_cts_duration = dur;
+ control->rts_cts_rate = rate->val;
+ }
+
+ if (tx->sta) {
+ tx->sta->tx_packets++;
+ tx->sta->tx_fragments++;
+ tx->sta->tx_bytes += tx->skb->len;
+ if (tx->u.tx.extra_frag) {
+ int i;
+ tx->sta->tx_fragments += tx->u.tx.num_extra_frag;
+ for (i = 0; i < tx->u.tx.num_extra_frag; i++) {
+ tx->sta->tx_bytes +=
+ tx->u.tx.extra_frag[i]->len;
+ }
+ }
+ }
+ tx->local->scan.txrx_count++;
+
+ return TXRX_CONTINUE;
+}
+
+
+static void ieee80211_rate_limit(unsigned long data)
+{
+ struct ieee80211_local *local = (struct ieee80211_local *) data;
+
+ if (local->rate_limit) {
+ local->rate_limit_bucket += local->rate_limit;
+ if (local->rate_limit_bucket > local->rate_limit_burst)
+ local->rate_limit_bucket = local->rate_limit_burst;
+ local->rate_limit_timer.expires = jiffies + HZ;
+ add_timer(&local->rate_limit_timer);
+ }
+
+}
+
+static ieee80211_txrx_result
+ieee80211_tx_h_rate_limit(struct ieee80211_txrx_data *tx)
+{
+
+ if (likely(!tx->local->rate_limit || tx->u.tx.unicast))
+ return TXRX_CONTINUE;
+
+ /* rate limit */
+ if (tx->local->rate_limit_bucket) {
+ tx->local->rate_limit_bucket--;
+ return TXRX_CONTINUE;
+ }
+
+ I802_DEBUG_INC(tx->local->tx_handlers_drop_rate_limit);
+ return TXRX_DROP;
+}
+
+
+
+static ieee80211_txrx_result
+ieee80211_tx_h_check_assoc(struct ieee80211_txrx_data *tx)
+{
+#ifdef CONFIG_IEEE80211_VERBOSE_DEBUG
+ struct sk_buff *skb = tx->skb;
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+#endif /* CONFIG_IEEE80211_VERBOSE_DEBUG */
+ u32 sta_flags;
+
+ if (unlikely(tx->local->sta_scanning != 0) &&
+ (WLAN_FC_GET_TYPE(tx->fc) != WLAN_FC_TYPE_MGMT ||
+ WLAN_FC_GET_STYPE(tx->fc) != WLAN_FC_STYPE_PROBE_REQ))
+ return TXRX_DROP;
+
+ if (tx->u.tx.ps_buffered)
+ return TXRX_CONTINUE;
+
+ sta_flags = tx->sta ? tx->sta->flags : 0;
+
+ if (likely(tx->u.tx.unicast)) {
+ if (unlikely(!(sta_flags & WLAN_STA_ASSOC) &&
+ tx->local->conf.mode != IW_MODE_ADHOC &&
+ WLAN_FC_GET_TYPE(tx->fc) == WLAN_FC_TYPE_DATA)) {
+#ifdef CONFIG_IEEE80211_VERBOSE_DEBUG
+ printk(KERN_DEBUG "%s: dropped data frame to not "
+ "associated station " MACSTR "\n",
+ tx->dev->name, MAC2STR(hdr->addr1));
+#endif /* CONFIG_IEEE80211_VERBOSE_DEBUG */
+ I802_DEBUG_INC(tx->local->tx_handlers_drop_not_assoc);
+ return TXRX_DROP;
+ }
+ } else {
+ if (unlikely(WLAN_FC_GET_TYPE(tx->fc) == WLAN_FC_TYPE_DATA &&
+ tx->local->num_sta == 0 &&
+ !tx->local->allow_broadcast_always &&
+ tx->local->conf.mode != IW_MODE_ADHOC)) {
+ /*
+ * No associated STAs - no need to send multicast
+ * frames.
+ */
+ return TXRX_DROP;
+ }
+ return TXRX_CONTINUE;
+ }
+
+ if (unlikely(!tx->u.tx.mgmt_interface && tx->sdata->ieee802_1x &&
+ !(sta_flags & WLAN_STA_AUTHORIZED))) {
+#ifdef CONFIG_IEEE80211_DEBUG
+ struct ieee80211_hdr *hdr =
+ (struct ieee80211_hdr *) tx->skb->data;
+ printk(KERN_DEBUG "%s: dropped frame to " MACSTR
+ " (unauthorized port)\n", tx->dev->name,
+ MAC2STR(hdr->addr1));
+#endif
+ I802_DEBUG_INC(tx->local->tx_handlers_drop_unauth_port);
+ return TXRX_DROP;
+ }
+
+ return TXRX_CONTINUE;
+}
+
+
+/* This function is called whenever the AP is about to exceed the maximum limit
+ * of buffered frames for power saving STAs. This situation should not really
+ * happen often during normal operation, so dropping the oldest buffered packet
+ * from each queue should be OK to make some room for new frames. */
+static void purge_old_ps_buffers(struct ieee80211_local *local)
+{
+ int total = 0, purged = 0;
+ struct sk_buff *skb;
+ struct list_head *ptr;
+
+ spin_lock_bh(&local->sub_if_lock);
+ list_for_each(ptr, &local->sub_if_list) {
+ struct ieee80211_if_norm *norm;
+ struct ieee80211_sub_if_data *sdata =
+ list_entry(ptr, struct ieee80211_sub_if_data, list);
+ if (sdata->dev == local->mdev ||
+ sdata->type != IEEE80211_SUB_IF_TYPE_NORM)
+ continue;
+ norm = &sdata->u.norm;
+ skb = skb_dequeue(&norm->ps_bc_buf);
+ if (skb) {
+ purged++;
+ dev_kfree_skb(skb);
+ }
+ total += skb_queue_len(&norm->ps_bc_buf);
+ }
+ spin_unlock_bh(&local->sub_if_lock);
+
+ spin_lock_bh(&local->sta_lock);
+ list_for_each(ptr, &local->sta_list) {
+ struct sta_info *sta =
+ list_entry(ptr, struct sta_info, list);
+ skb = skb_dequeue(&sta->ps_tx_buf);
+ if (skb) {
+ purged++;
+ dev_kfree_skb(skb);
+ }
+ total += skb_queue_len(&sta->ps_tx_buf);
+ }
+ spin_unlock_bh(&local->sta_lock);
+
+ local->total_ps_buffered = total;
+ printk(KERN_DEBUG "%s: PS buffers full - purged %d frames\n",
+ local->mdev->name, purged);
+}
+
+
+static inline ieee80211_txrx_result
+ieee80211_tx_h_multicast_ps_buf(struct ieee80211_txrx_data *tx)
+{
+ /* broadcast/multicast frame */
+ /* If any of the associated stations is in power save mode,
+ * the frame is buffered to be sent after DTIM beacon frame */
+ if (tx->local->hw->host_broadcast_ps_buffering &&
+ tx->sdata->type != IEEE80211_SUB_IF_TYPE_WDS &&
+ tx->sdata->bss && atomic_read(&tx->sdata->bss->num_sta_ps) &&
+ !(tx->fc & WLAN_FC_ORDER)) {
+ if (tx->local->total_ps_buffered >= TOTAL_MAX_TX_BUFFER)
+ purge_old_ps_buffers(tx->local);
+ if (skb_queue_len(&tx->sdata->bss->ps_bc_buf) >=
+ AP_MAX_BC_BUFFER) {
+ if (net_ratelimit()) {
+ printk(KERN_DEBUG "%s: BC TX buffer full - "
+ "dropping the oldest frame\n",
+ tx->dev->name);
+ }
+ dev_kfree_skb(skb_dequeue(&tx->sdata->bss->ps_bc_buf));
+ } else
+ tx->local->total_ps_buffered++;
+ skb_queue_tail(&tx->sdata->bss->ps_bc_buf, tx->skb);
+ return TXRX_QUEUED;
+ }
+
+ return TXRX_CONTINUE;
+}
+
+
+static inline ieee80211_txrx_result
+ieee80211_tx_h_unicast_ps_buf(struct ieee80211_txrx_data *tx)
+{
+ struct sta_info *sta = tx->sta;
+
+ if (unlikely(!sta ||
+ (WLAN_FC_GET_TYPE(tx->fc) == WLAN_FC_TYPE_MGMT &&
+ WLAN_FC_GET_STYPE(tx->fc) == WLAN_FC_STYPE_PROBE_RESP)))
+ return TXRX_CONTINUE;
+
+ if (unlikely((sta->flags & WLAN_STA_PS) && !sta->pspoll)) {
+ struct ieee80211_tx_packet_data *pkt_data;
+#ifdef IEEE80211_VERBOSE_DEBUG_PS
+ printk(KERN_DEBUG "STA " MACSTR " aid %d: PS buffer (entries "
+ "before %d)\n",
+ MAC2STR(sta->addr), sta->aid,
+ skb_queue_len(&sta->ps_tx_buf));
+#endif /* IEEE80211_VERBOSE_DEBUG_PS */
+ sta->flags |= WLAN_STA_TIM;
+ if (tx->local->total_ps_buffered >= TOTAL_MAX_TX_BUFFER)
+ purge_old_ps_buffers(tx->local);
+ if (skb_queue_len(&sta->ps_tx_buf) >= STA_MAX_TX_BUFFER) {
+ struct sk_buff *old = skb_dequeue(&sta->ps_tx_buf);
+ if (net_ratelimit()) {
+ printk(KERN_DEBUG "%s: STA " MACSTR " TX "
+ "buffer full - dropping oldest frame\n",
+ tx->dev->name, MAC2STR(sta->addr));
+ }
+ dev_kfree_skb(old);
+ } else
+ tx->local->total_ps_buffered++;
+ /* Queue frame to be sent after STA sends an PS Poll frame */
+ if (skb_queue_empty(&sta->ps_tx_buf) && tx->local->hw->set_tim)
+ tx->local->hw->set_tim(tx->dev, sta->aid, 1);
+ pkt_data = (struct ieee80211_tx_packet_data *)tx->skb->cb;
+ pkt_data->jiffies = jiffies;
+ skb_queue_tail(&sta->ps_tx_buf, tx->skb);
+ return TXRX_QUEUED;
+ }
+#ifdef IEEE80211_VERBOSE_DEBUG_PS
+ else if (unlikely(sta->flags & WLAN_STA_PS)) {
+ printk(KERN_DEBUG "%s: STA " MACSTR " in PS mode, but pspoll "
+ "set -> send frame\n", tx->dev->name,
+ MAC2STR(sta->addr));
+ }
+#endif /* IEEE80211_VERBOSE_DEBUG_PS */
+ sta->pspoll = 0;
+
+ return TXRX_CONTINUE;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_tx_h_ps_buf(struct ieee80211_txrx_data *tx)
+{
+ if (unlikely(tx->u.tx.ps_buffered))
+ return TXRX_CONTINUE;
+
+ if (tx->u.tx.unicast)
+ return ieee80211_tx_h_unicast_ps_buf(tx);
+ else
+ return ieee80211_tx_h_multicast_ps_buf(tx);
+}
+
+
+static void inline ieee80211_tx_prepare(struct ieee80211_txrx_data *tx,
+ struct sk_buff *skb,
+ struct net_device *dev,
+ struct ieee80211_tx_control *control)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ struct ieee80211_tx_packet_data *pkt_data;
+ int hdrlen;
+
+ pkt_data = (struct ieee80211_tx_packet_data *)skb->cb;
+
+ memset(tx, 0, sizeof(*tx));
+ tx->skb = skb;
+ tx->dev = pkt_data->sdata->dev; /* use original interface */
+ tx->local = local;
+ tx->sdata = pkt_data->sdata;
+ tx->sta = sta_info_get(local, hdr->addr1);
+ tx->fc = le16_to_cpu(hdr->frame_control);
+ control->power_level = local->conf.power_level;
+ tx->u.tx.control = control;
+ tx->u.tx.unicast = !MULTICAST_ADDR(hdr->addr1);
+ control->no_ack = MULTICAST_ADDR(hdr->addr1);
+ tx->fragmented = local->fragmentation_threshold <
+ IEEE80211_MAX_FRAG_THRESHOLD && tx->u.tx.unicast &&
+ skb->len + 4 /* FCS */ > local->fragmentation_threshold &&
+ (local->hw->set_frag_threshold == NULL);
+ if (tx->sta == NULL)
+ control->clear_dst_mask = 1;
+ else if (tx->sta->clear_dst_mask) {
+ control->clear_dst_mask = 1;
+ tx->sta->clear_dst_mask = 0;
+ }
+ control->antenna_sel = local->conf.antenna_sel;
+ if (local->sta_antenna_sel != STA_ANTENNA_SEL_AUTO && tx->sta)
+ control->antenna_sel = tx->sta->antenna_sel;
+ hdrlen = ieee80211_get_hdrlen(tx->fc);
+ if (skb->len > hdrlen + sizeof(rfc1042_header) + 2) {
+ u8 *pos = &skb->data[hdrlen + sizeof(rfc1042_header)];
+ tx->ethertype = (pos[0] << 8) | pos[1];
+ }
+
+}
+
+
+static int ieee80211_tx(struct net_device *dev, struct sk_buff *skb,
+ struct ieee80211_tx_control *control, int mgmt)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct sta_info *sta;
+ ieee80211_tx_handler *handler;
+ struct ieee80211_txrx_data tx;
+ ieee80211_txrx_result res = TXRX_DROP;
+ int ret, i;
+
+ if (unlikely(skb->len < 10)) {
+ dev_kfree_skb(skb);
+ return 0;
+ }
+
+ ieee80211_tx_prepare(&tx, skb, dev, control);
+ sta = tx.sta;
+ tx.u.tx.mgmt_interface = mgmt;
+
+ for (handler = local->tx_handlers; *handler != NULL; handler++) {
+ res = (*handler)(&tx);
+ if (res != TXRX_CONTINUE)
+ break;
+ }
+
+ skb = tx.skb; /* handlers are allowed to change skb */
+
+ if (sta)
+ sta_info_release(local, sta);
+
+ if (unlikely(res == TXRX_DROP)) {
+ I802_DEBUG_INC(local->tx_handlers_drop);
+ goto drop;
+ }
+
+ if (unlikely(res == TXRX_QUEUED)) {
+ I802_DEBUG_INC(local->tx_handlers_queued);
+ return 0;
+ }
+
+ ieee80211_dump_frame(dev->name, "TX to low-level driver", skb);
+ ret = local->hw->tx(dev, skb, control);
+#ifdef IEEE80211_LEDS
+ if (!ret && local->tx_led_counter++ == 0) {
+ ieee80211_tx_led(1, dev);
+ }
+#endif /* IEEE80211_LEDS */
+ if (tx.u.tx.extra_frag) {
+ if (ret > 0) {
+ /* Must free all fragments and return 0 since skb data
+ * has been fragmented into multiple buffers.
+ * TODO: could free extra fragments and restore skb to
+ * the original form since the data is still there and
+ * then return nonzero so that Linux netif would
+ * retry. */
+ goto drop;
+ }
+
+ skb = NULL; /* skb is now owned by low-level driver */
+ control->use_rts_cts = 0;
+ control->use_cts_protect = 0;
+ control->clear_dst_mask = 0;
+ for (i = 0; i < tx.u.tx.num_extra_frag; i++) {
+ int next_len, dur;
+ struct ieee80211_hdr *hdr =
+ (struct ieee80211_hdr *)
+ tx.u.tx.extra_frag[i]->data;
+ if (i + 1 < tx.u.tx.num_extra_frag)
+ next_len = tx.u.tx.extra_frag[i + 1]->len;
+ else {
+ next_len = 0;
+ tx.u.tx.rate = tx.u.tx.last_frag_rate;
+ tx.u.tx.control->tx_rate = tx.u.tx.rate->val;
+// tx.u.tx.control->rateidx =
+// tx.u.tx.last_frag_rateidx;
+ tx.u.tx.control->rate_ctrl_probe =
+ tx.u.tx.probe_last_frag;
+ }
+ dur = ieee80211_duration(&tx, 0, next_len);
+ hdr->duration_id = cpu_to_le16(dur);
+
+ ieee80211_dump_frame(dev->name,
+ "TX to low-level driver", skb);
+ ret = local->hw->tx(dev, tx.u.tx.extra_frag[i],
+ control);
+ if (ret > 0)
+ goto drop;
+#ifdef IEEE80211_LEDS
+ if (local->tx_led_counter++ == 0) {
+ ieee80211_tx_led(1, dev);
+ }
+#endif /* IEEE80211_LEDS */
+ tx.u.tx.extra_frag[i] = NULL;
+ }
+ kfree(tx.u.tx.extra_frag);
+ }
+ if (ret == -1)
+ ret = 0;
+ return ret;
+
+ drop:
+ if (skb)
+ dev_kfree_skb(skb);
+ for (i = 0; i < tx.u.tx.num_extra_frag; i++)
+ if (tx.u.tx.extra_frag[i])
+ dev_kfree_skb(tx.u.tx.extra_frag[i]);
+ kfree(tx.u.tx.extra_frag);
+ return 0;
+}
+
+
+static int ieee80211_master_start_xmit(struct sk_buff *skb,
+ struct net_device *dev)
+{
+ struct ieee80211_tx_control control;
+ struct ieee80211_tx_packet_data *pkt_data;
+ struct ieee80211_sub_if_data *sdata;
+ int ret = 1;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ /*
+ * copy control out of the skb so other people can use skb->cb
+ */
+ pkt_data = (struct ieee80211_tx_packet_data *)skb->cb;
+ if (unlikely(pkt_data->magic != IEEE80211_CB_MAGIC)) {
+ printk(KERN_WARNING "%s: Someone messed with our skb->cb\n",
+ dev->name);
+ dev_kfree_skb(skb);
+ return 0;
+ }
+ memcpy(&control, &pkt_data->control,
+ sizeof(struct ieee80211_tx_control));
+
+ ret = ieee80211_tx(dev, skb, &control,
+ pkt_data->sdata->type ==
+ IEEE80211_SUB_IF_TYPE_MGMT);
+
+ return ret;
+}
+
+
+/**
+ * ieee80211_subif_start_xmit - netif start_xmit function for Ethernet-type
+ * subinterfaces (wlan#, WDS, and VLAN interfaces)
+ * @skb: packet to be sent
+ * @dev: incoming interface
+ *
+ * Returns: 0 on success (and frees skb in this case) or 1 on failure (skb will
+ * not be freed, and caller is responsible for either retrying later or freeing
+ * skb).
+ *
+ * This function takes in an Ethernet header and encapsulates it with suitable
+ * IEEE 802.11 header based on which interface the packet is coming in. The
+ * encapsulated packet will then be passed to master interface, wlan#.11, for
+ * transmission (through low-level driver).
+ */
+static int ieee80211_subif_start_xmit(struct sk_buff *skb,
+ struct net_device *dev)
+{
+ struct ieee80211_local *local = (struct ieee80211_local *) dev->priv;
+ struct ieee80211_tx_packet_data *pkt_data;
+ struct ieee80211_sub_if_data *sdata;
+ int ret = 1, head_need;
+ u16 ethertype, hdrlen, fc;
+ struct ieee80211_hdr hdr;
+ u8 *encaps_data;
+ int encaps_len, skip_header_bytes;
+ int nh_pos, h_pos, no_encrypt = 0;
+ struct sta_info *sta;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (unlikely(skb->len < ETH_HLEN)) {
+ printk(KERN_DEBUG "%s: short skb (len=%d)\n",
+ dev->name, skb->len);
+ ret = 0;
+ goto fail;
+ }
+
+ nh_pos = skb->nh.raw - skb->data;
+ h_pos = skb->h.raw - skb->data;
+
+ /* convert Ethernet header to proper 802.11 header (based on
+ * operation mode) */
+ ethertype = (skb->data[12] << 8) | skb->data[13];
+ /* TODO: handling for 802.1x authorized/unauthorized port */
+ fc = (WLAN_FC_TYPE_DATA << 2) | (WLAN_FC_STYPE_DATA << 4);
+
+ if (likely(sdata->type == IEEE80211_SUB_IF_TYPE_NORM ||
+ sdata->type == IEEE80211_SUB_IF_TYPE_VLAN)) {
+ if (local->conf.mode == IW_MODE_MASTER) {
+ fc |= WLAN_FC_FROMDS;
+ /* DA BSSID SA */
+ memcpy(hdr.addr1, skb->data, ETH_ALEN);
+ memcpy(hdr.addr2, dev->dev_addr, ETH_ALEN);
+ memcpy(hdr.addr3, skb->data + ETH_ALEN, ETH_ALEN);
+ } else if (local->conf.mode == IW_MODE_INFRA) {
+ fc |= WLAN_FC_TODS;
+ /* BSSID SA DA */
+ memcpy(hdr.addr1, local->bssid, ETH_ALEN);
+ memcpy(hdr.addr2, skb->data + ETH_ALEN, ETH_ALEN);
+ memcpy(hdr.addr3, skb->data, ETH_ALEN);
+ } else if (local->conf.mode == IW_MODE_ADHOC) {
+ /* DA SA BSSID */
+ memcpy(hdr.addr1, skb->data, ETH_ALEN);
+ memcpy(hdr.addr2, skb->data + ETH_ALEN, ETH_ALEN);
+ memcpy(hdr.addr3, local->bssid, ETH_ALEN);
+ }
+ hdrlen = 24;
+ } else if (sdata->type == IEEE80211_SUB_IF_TYPE_WDS) {
+ fc |= WLAN_FC_FROMDS | WLAN_FC_TODS;
+ /* RA TA DA SA */
+ memcpy(hdr.addr1, sdata->u.wds.remote_addr, ETH_ALEN);
+ memcpy(hdr.addr2, dev->dev_addr, ETH_ALEN);
+ memcpy(hdr.addr3, skb->data, ETH_ALEN);
+ memcpy(hdr.addr4, skb->data + ETH_ALEN, ETH_ALEN);
+ hdrlen = 30;
+ } else if (sdata->type == IEEE80211_SUB_IF_TYPE_STA) {
+ if (local->conf.mode == IW_MODE_INFRA) {
+ fc |= WLAN_FC_TODS;
+ /* BSSID SA DA */
+ memcpy(hdr.addr1, sdata->u.sta.bssid, ETH_ALEN);
+ memcpy(hdr.addr2, skb->data + ETH_ALEN, ETH_ALEN);
+ memcpy(hdr.addr3, skb->data, ETH_ALEN);
+ } else {
+ /* DA SA BSSID */
+ memcpy(hdr.addr1, skb->data, ETH_ALEN);
+ memcpy(hdr.addr2, skb->data + ETH_ALEN, ETH_ALEN);
+ memcpy(hdr.addr3, sdata->u.sta.bssid, ETH_ALEN);
+ }
+ hdrlen = 24;
+ } else {
+ ret = 0;
+ goto fail;
+ }
+
+ /* receiver is QoS enabled, use a QoS type frame */
+ sta = sta_info_get(local, hdr.addr1);
+ if (sta) {
+ if (sta->flags & WLAN_STA_WME) {
+ fc |= WLAN_FC_STYPE_QOS_DATA << 4;
+ hdrlen += 2;
+ }
+ sta_info_release(local, sta);
+ }
+
+ hdr.frame_control = cpu_to_le16(fc);
+ hdr.duration_id = 0;
+ hdr.seq_ctrl = 0;
+
+ skip_header_bytes = ETH_HLEN;
+ if (ethertype == ETH_P_AARP || ethertype == ETH_P_IPX) {
+ encaps_data = bridge_tunnel_header;
+ encaps_len = sizeof(bridge_tunnel_header);
+ skip_header_bytes -= 2;
+ } else if (ethertype >= 0x600) {
+ encaps_data = rfc1042_header;
+ encaps_len = sizeof(rfc1042_header);
+ skip_header_bytes -= 2;
+ } else {
+ encaps_data = NULL;
+ encaps_len = 0;
+ }
+
+ skb_pull(skb, skip_header_bytes);
+ nh_pos -= skip_header_bytes;
+ h_pos -= skip_header_bytes;
+
+ /* TODO: implement support for fragments so that there is no need to
+ * reallocate and copy payload; it might be enough to support one
+ * extra fragment that would be copied in the beginning of the frame
+ * data.. anyway, it would be nice to include this into skb structure
+ * somehow
+ *
+ * There are few options for this:
+ * use skb->cb as an extra space for 802.11 header
+ * allocate new buffer if not enough headroom
+ * make sure that there is enough headroom in every skb by increasing
+ * build in headroom in __dev_alloc_skb() (linux/skbuff.h) and
+ * alloc_skb() (net/core/skbuff.c)
+ */
+ head_need = hdrlen + encaps_len + (local->hw->extra_hdr_room ? 2 : 0);
+ head_need -= skb_headroom(skb);
+
+ /* We are going to modify skb data, so make a copy of it if happens to
+ * be cloned. This could happen, e.g., with Linux bridge code passing
+ * us broadcast frames. */
+
+ if (head_need > 0 || skb_cloned(skb)) {
+#if 0
+ printk(KERN_DEBUG "%s: need to reallocate buffer for %d bytes "
+ "of headroom\n", dev->name, head_need);
+#endif
+
+ if (skb_cloned(skb))
+ I802_DEBUG_INC(local->tx_expand_skb_head_cloned);
+ else
+ I802_DEBUG_INC(local->tx_expand_skb_head);
+ /* Since we have to reallocate the buffer, make sure that there
+ * is enough room for possible WEP IV/ICV and TKIP (8 bytes
+ * before payload and 12 after). */
+ if (pskb_expand_head(skb, (head_need > 0 ? head_need + 8 : 8),
+ 12, GFP_ATOMIC)) {
+ printk(KERN_DEBUG "%s: failed to reallocate TX buffer"
+ "\n", dev->name);
+ goto fail;
+ }
+ }
+
+ if (encaps_data) {
+ memcpy(skb_push(skb, encaps_len), encaps_data, encaps_len);
+ nh_pos += encaps_len;
+ h_pos += encaps_len;
+ }
+ memcpy(skb_push(skb, hdrlen), &hdr, hdrlen);
+ nh_pos += hdrlen;
+ h_pos += hdrlen;
+
+ pkt_data = (struct ieee80211_tx_packet_data *)skb->cb;
+ memset(pkt_data, 0, sizeof(struct ieee80211_tx_packet_data));
+ pkt_data->magic = IEEE80211_CB_MAGIC;
+ pkt_data->sdata = sdata;
+ pkt_data->control.do_not_encrypt = no_encrypt;
+
+ skb->dev = sdata->master;
+ sdata->stats.tx_packets++;
+ sdata->stats.tx_bytes += skb->len;
+
+ /* Update skb pointers to various headers since this modified frame
+ * is going to go through Linux networking code that may potentially
+ * need things like pointer to IP header. */
+ skb->mac.raw = skb->data;
+ skb->nh.raw = skb->data + nh_pos;
+ skb->h.raw = skb->data + h_pos;
+
+
+ dev_queue_xmit(skb);
+
+ return 0;
+
+ fail:
+ if (!ret)
+ dev_kfree_skb(skb);
+
+ return ret;
+}
+
+
+/*
+ * This is the transmit routine for the 802.11 type interfaces
+ * called by upper layers of the linux networking
+ * stack when it has a frame to transmit
+ */
+static int
+ieee80211_mgmt_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_tx_packet_data *pkt_data;
+ struct ieee80211_hdr *hdr;
+ u16 fc;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ if (skb->len < 10) {
+ dev_kfree_skb(skb);
+ return 0;
+ }
+
+ hdr = (struct ieee80211_hdr *) skb->data;
+ fc = le16_to_cpu(hdr->frame_control);
+
+ pkt_data = (struct ieee80211_tx_packet_data *)skb->cb;
+ memset(pkt_data, 0, sizeof(struct ieee80211_tx_packet_data));
+ pkt_data->magic = IEEE80211_CB_MAGIC;
+ pkt_data->sdata = sdata;
+
+ if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
+ WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP)
+ pkt_data->control.pkt_type = PKT_PROBE_RESP;
+
+ skb->priority = 20; /* use hardcode priority for mgmt TX queue */
+ skb->dev = sdata->master;
+
+ /*
+ * We're using the protocol field of the the frame control header
+ * to request TX callback for hostapd. BIT(1) is checked.
+ */
+ if ((fc & BIT(1)) == BIT(1)) {
+ pkt_data->control.req_tx_status = 1;
+ fc &= ~BIT(1);
+ hdr->frame_control = cpu_to_le16(fc);
+ }
+
+
+
+ pkt_data->control.do_not_encrypt = !(fc & WLAN_FC_ISWEP);
+
+ sdata->stats.tx_packets++;
+ sdata->stats.tx_bytes += skb->len;
+
+ dev_queue_xmit(skb);
+
+ return 0;
+}
+
+
+static void ieee80211_beacon_add_tim(struct ieee80211_local *local,
+ struct ieee80211_if_norm *bss,
+ struct sk_buff *skb)
+{
+ u8 *pos, *tim;
+ int aid0 = 0;
+ int i, num_bits = 0, n1, n2;
+ u8 bitmap[251];
+
+ /* Generate bitmap for TIM only if there are any STAs in power save
+ * mode. */
+ if (atomic_read(&bss->num_sta_ps) > 0 && bss->max_aid > 0) {
+ memset(bitmap, 0, sizeof(bitmap));
+ spin_lock_bh(&local->sta_lock);
+ for (i = 0; i < bss->max_aid; i++) {
+ if (bss->sta_aid[i] &&
+ (!skb_queue_empty(&bss->sta_aid[i]->ps_tx_buf) ||
+ !skb_queue_empty(&bss->sta_aid[i]->tx_filtered)))
+ {
+ bitmap[(i + 1) / 8] |= 1 << (i + 1) % 8;
+ num_bits++;
+ }
+ }
+ spin_unlock_bh(&local->sta_lock);
+ }
+
+ if (bss->dtim_count == 0)
+ bss->dtim_count = bss->dtim_period - 1;
+ else
+ bss->dtim_count--;
+
+ tim = pos = (u8 *) skb_put(skb, 6);
+ *pos++ = WLAN_EID_TIM;
+ *pos++ = 4;
+ *pos++ = bss->dtim_count;
+ *pos++ = bss->dtim_period;
+
+ if (bss->dtim_count == 0 && !skb_queue_empty(&bss->ps_bc_buf)) {
+ aid0 = 1;
+ }
+
+ if (num_bits) {
+ /* Find largest even number N1 so that bits numbered 1 through
+ * (N1 x 8) - 1 in the bitmap are 0 and number N2 so that bits
+ * (N2 + 1) x 8 through 2007 are 0. */
+ n1 = 0;
+ for (i = 0; i < sizeof(bitmap); i++) {
+ if (bitmap[i]) {
+ n1 = i & 0xfe;
+ break;
+ }
+ }
+ n2 = n1;
+ for (i = sizeof(bitmap) - 1; i >= n1; i--) {
+ if (bitmap[i]) {
+ n2 = i;
+ break;
+ }
+ }
+
+ /* Bitmap control */
+ *pos++ = n1 | (aid0 ? 1 : 0);
+ /* Part Virt Bitmap */
+ memcpy(pos, bitmap + n1, n2 - n1 + 1);
+
+ tim[1] = n2 - n1 + 4;
+ skb_put(skb, n2 - n1);
+ } else {
+ *pos++ = aid0 ? 1 : 0; /* Bitmap control */
+ *pos++ = 0; /* Part Virt Bitmap */
+ }
+}
+
+
+
+
+struct sk_buff * ieee80211_beacon_get(struct net_device *dev, int bss_idx,
+ struct ieee80211_tx_control *control)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct sk_buff *skb;
+ struct net_device *bdev;
+ struct ieee80211_sub_if_data *sdata = NULL;
+ struct ieee80211_if_norm *norm = NULL;
+ struct ieee80211_rate *rate;
+ struct rate_control_extra extra;
+ u8 *b_head, *b_tail;
+ int bh_len, bt_len;
+
+
+ spin_lock_bh(&local->sub_if_lock);
+ if (bss_idx < 0 || bss_idx >= local->bss_dev_count)
+ bdev = NULL;
+ else {
+ bdev = local->bss_devs[bss_idx];
+ sdata = IEEE80211_DEV_TO_SUB_IF(bdev);
+ norm = &sdata->u.norm;
+ }
+ spin_unlock_bh(&local->sub_if_lock);
+
+ if (bdev == NULL || norm == NULL || norm->beacon_head == NULL) {
+#ifdef CONFIG_IEEE80211_VERBOSE_DEBUG
+ if (net_ratelimit())
+ printk(KERN_DEBUG "no beacon data avail for idx=%d "
+ "(%s)\n", bss_idx, bdev ? bdev->name : "N/A");
+#endif /* CONFIG_IEEE80211_VERBOSE_DEBUG */
+ return NULL;
+ }
+
+ /* Assume we are generating the normal beacon locally */
+ b_head = norm->beacon_head;
+ b_tail = norm->beacon_tail;
+ bh_len = norm->beacon_head_len;
+ bt_len = norm->beacon_tail_len;
+
+
+ skb = dev_alloc_skb(bh_len + bt_len + 256 /* maximum TIM len */);
+ if (!skb)
+ return NULL;
+
+ memcpy(skb_put(skb, bh_len), b_head, bh_len);
+
+ ieee80211_beacon_add_tim(local, norm, skb);
+
+ if (b_tail) {
+ memcpy(skb_put(skb, bt_len), b_tail, bt_len);
+ }
+
+ memset(&extra, 0, sizeof(extra));
+ extra.endidx = local->num_curr_rates;
+
+
+ rate = rate_control_get_rate(dev, skb, &extra);
+ if (rate == NULL) {
+ if (net_ratelimit()) {
+ printk(KERN_DEBUG "%s: ieee80211_beacon_get: no rate "
+ "found\n", dev->name);
+ }
+ dev_kfree_skb(skb);
+ return NULL;
+ }
+
+ control->tx_rate = (local->short_preamble &&
+ (rate->flags & IEEE80211_RATE_PREAMBLE2)) ?
+ rate->val2 : rate->val;
+ control->antenna_sel = local->conf.antenna_sel;
+ control->power_level = local->conf.power_level;
+ control->no_ack = 1;
+ control->retry_limit = 1;
+ control->rts_cts_duration = 0;
+ control->clear_dst_mask = 1;
+
+
+ norm->num_beacons++;
+ return skb;
+}
+
+struct sk_buff *
+ieee80211_get_buffered_bc(struct net_device *dev, int bss_idx,
+ struct ieee80211_tx_control *control)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct sk_buff *skb;
+ struct sta_info *sta;
+ ieee80211_tx_handler *handler;
+ struct ieee80211_txrx_data tx;
+ ieee80211_txrx_result res = TXRX_DROP;
+ struct net_device *bdev;
+ struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_if_norm *bss;
+
+
+ spin_lock_bh(&local->sub_if_lock);
+ if (bss_idx < 0 || bss_idx >= local->bss_dev_count) {
+ bdev = NULL;
+ bss = NULL;
+ } else {
+ bdev = local->bss_devs[bss_idx];
+ sdata = IEEE80211_DEV_TO_SUB_IF(bdev);
+ bss = &sdata->u.norm;
+ }
+ spin_unlock_bh(&local->sub_if_lock);
+ if (bdev == NULL || bss == NULL || bss->beacon_head == NULL)
+ return NULL;
+
+ if (bss->dtim_count != 0)
+ return NULL; /* send buffered bc/mc only after DTIM beacon */
+ skb = skb_dequeue(&bss->ps_bc_buf);
+ memset(control, 0, sizeof(*control));
+ if (skb == NULL)
+ return NULL;
+ local->total_ps_buffered--;
+
+ if (!skb_queue_empty(&bss->ps_bc_buf) && skb->len >= 2) {
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ /* more buffered multicast/broadcast frames ==> set MoreData
+ * flag in IEEE 802.11 header to inform PS STAs */
+ hdr->frame_control |= cpu_to_le16(WLAN_FC_MOREDATA);
+ }
+
+ ieee80211_tx_prepare(&tx, skb, dev, control);
+ sta = tx.sta;
+ tx.u.tx.ps_buffered = 1;
+
+ for (handler = local->tx_handlers; *handler != NULL; handler++) {
+ res = (*handler)(&tx);
+ if (res == TXRX_DROP || res == TXRX_QUEUED)
+ break;
+ }
+
+ if (res == TXRX_DROP) {
+ I802_DEBUG_INC(local->tx_handlers_drop);
+ dev_kfree_skb(skb);
+ skb = NULL;
+ } else if (res == TXRX_QUEUED) {
+ I802_DEBUG_INC(local->tx_handlers_queued);
+ skb = NULL;
+ }
+
+ if (sta)
+ sta_info_release(local, sta);
+
+ return skb;
+}
+
+
+int ieee80211_hw_config(struct net_device *dev)
+{
+ struct ieee80211_local *local = dev->priv;
+ int i, ret = 0;
+
+#ifdef CONFIG_IEEE80211_VERBOSE_DEBUG
+ printk(KERN_DEBUG "HW CONFIG: channel=%d freq=%d mode=%d "
+ "phymode=%d\n", local->conf.channel, local->conf.freq,
+ local->conf.mode, local->conf.phymode);
+#endif /* CONFIG_IEEE80211_VERBOSE_DEBUG */
+
+ if (local->hw->config)
+ ret = local->hw->config(dev, &local->conf);
+
+ for (i = 0; i < local->hw->num_modes; i++) {
+ struct ieee80211_hw_modes *mode = &local->hw->modes[i];
+ if (mode->mode == local->conf.phymode) {
+ if (local->curr_rates != mode->rates) {
+ rate_control_clear(local);
+ }
+ local->curr_rates = mode->rates;
+ local->num_curr_rates = mode->num_rates;
+ ieee80211_prepare_rates(dev);
+ break;
+ }
+ }
+
+ return ret;
+}
+
+
+struct ieee80211_conf *ieee80211_get_hw_conf(struct net_device *dev)
+{
+ struct ieee80211_local *local = dev->priv;
+ return &local->conf;
+}
+
+
+static int ieee80211_change_mtu(struct net_device *dev, int new_mtu)
+{
+ /* FIX: what would be proper limits for MTU?
+ * This interface uses 802.3 frames. */
+ if (new_mtu < 256 || new_mtu > 2304 - 24 - 6) {
+ printk(KERN_WARNING "%s: invalid MTU %d\n",
+ dev->name, new_mtu);
+ return -EINVAL;
+ }
+
+#ifdef CONFIG_IEEE80211_VERBOSE_DEBUG
+ printk(KERN_DEBUG "%s: setting MTU %d\n", dev->name, new_mtu);
+#endif /* CONFIG_IEEE80211_VERBOSE_DEBUG */
+ dev->mtu = new_mtu;
+ return 0;
+}
+
+
+static int ieee80211_change_mtu_apdev(struct net_device *dev, int new_mtu)
+{
+ /* FIX: what would be proper limits for MTU?
+ * This interface uses 802.11 frames. */
+ if (new_mtu < 256 || new_mtu > 2304) {
+ printk(KERN_WARNING "%s: invalid MTU %d\n",
+ dev->name, new_mtu);
+ return -EINVAL;
+ }
+
+#ifdef CONFIG_IEEE80211_VERBOSE_DEBUG
+ printk(KERN_DEBUG "%s: setting MTU %d\n", dev->name, new_mtu);
+#endif /* CONFIG_IEEE80211_VERBOSE_DEBUG */
+ dev->mtu = new_mtu;
+ return 0;
+}
+
+
+static void ieee80211_tx_timeout(struct net_device *dev)
+{
+ struct ieee80211_local *local = dev->priv;
+
+ printk(KERN_WARNING "%s: resetting interface.\n", dev->name);
+
+ if (local->hw->reset(dev))
+ printk(KERN_ERR "%s: failed to reset interface.\n", dev->name);
+ else
+ netif_wake_queue(dev);
+}
+
+
+static int ieee80211_set_mac_address(struct net_device *dev, void *addr)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct sockaddr *a = addr;
+ struct list_head *ptr;
+ int res;
+
+ if (!local->hw->set_mac_address)
+ return -EOPNOTSUPP;
+
+ res = local->hw->set_mac_address(dev, addr);
+ if (res)
+ return res;
+
+ list_for_each(ptr, &local->sub_if_list) {
+ struct ieee80211_sub_if_data *sdata =
+ list_entry(ptr, struct ieee80211_sub_if_data, list);
+ memcpy(sdata->dev->dev_addr, a->sa_data, ETH_ALEN);
+ }
+
+ return 0;
+}
+
+
+static struct net_device_stats *ieee80211_get_stats(struct net_device *dev)
+{
+ struct ieee80211_sub_if_data *sdata;
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ return &(sdata->stats);
+}
+
+
+static int ieee80211_open(struct net_device *dev)
+{
+ struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_local *local = dev->priv;
+ int res;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ if (local->open_count == 0) {
+ res = local->hw->open(sdata->master);
+ if (res)
+ return res;
+ ieee80211_init_scan(sdata->master);
+ }
+ local->open_count++;
+
+ netif_start_queue(dev);
+ return 0;
+}
+
+
+static int ieee80211_stop(struct net_device *dev)
+{
+ struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_local *local = dev->priv;
+ int res;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ netif_stop_queue(dev);
+
+ local->open_count--;
+ if (local->open_count == 0) {
+ ieee80211_stop_scan(sdata->master);
+ res = local->hw->stop(sdata->master);
+ if (res)
+ return res;
+ }
+
+ return 0;
+}
+
+
+static int header_parse_80211(struct sk_buff *skb, unsigned char *haddr)
+{
+ memcpy(haddr, skb->mac.raw + 10, ETH_ALEN); /* addr2 */
+ return ETH_ALEN;
+}
+
+
+static struct net_device *
+ieee80211_get_wds_dev(struct ieee80211_local *local, u8 *addr)
+{
+ struct list_head *ptr;
+
+ list_for_each(ptr, &local->sub_if_list) {
+ struct ieee80211_sub_if_data *sdata =
+ list_entry(ptr, struct ieee80211_sub_if_data, list);
+ if (sdata->type == IEEE80211_SUB_IF_TYPE_WDS &&
+ memcmp(addr, sdata->u.wds.remote_addr, ETH_ALEN) == 0)
+ return sdata->dev;
+ }
+
+ return NULL;
+}
+
+
+static struct net_device * ieee80211_own_bssid(struct ieee80211_local *local,
+ u8 *addr)
+{
+ int i;
+ struct net_device *dev = NULL;
+
+ spin_lock_bh(&local->sub_if_lock);
+ for (i = 0; i < local->bss_dev_count; i++) {
+ if ((memcmp(local->bss_devs[i]->dev_addr, addr, ETH_ALEN) == 0)
+ ) {
+ dev = local->bss_devs[i];
+ break;
+ }
+ }
+ spin_unlock_bh(&local->sub_if_lock);
+
+ return dev;
+}
+
+
+
+
+static struct net_device * ieee80211_sta_bssid(struct ieee80211_local *local,
+ u8 *addr, u8 *a1,
+ int *sta_multicast)
+{
+ struct list_head *ptr;
+ int multicast;
+ u8 *own_addr = local->mdev->dev_addr;
+
+ multicast = a1[0] & 0x01;
+
+ /* Try O(1) lookup for a common case of only one AP being used. */
+ if (own_addr[0] == a1[0] && own_addr[1] == a1[1] &&
+ own_addr[2] == a1[2]) {
+ int index = (((int) a1[3] << 16) | ((int) a1[4] << 8) | a1[5])
+ - (((int) own_addr[3] << 16) |
+ ((int) own_addr[4] << 8) | own_addr[5]);
+ if (index >= 0 && index < local->conf.bss_count &&
+ local->sta_devs[index]) {
+ struct net_device *dev = local->sta_devs[index];
+ struct ieee80211_sub_if_data *sdata;
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (memcmp(addr, sdata->u.sta.bssid, ETH_ALEN) == 0) {
+ *sta_multicast = multicast;
+ return dev;
+ }
+ }
+ }
+
+ if (!multicast)
+ return NULL;
+
+ /* Could not find station interface, resort to O(n) lookup. */
+ list_for_each(ptr, &local->sub_if_list) {
+ struct ieee80211_sub_if_data *sdata =
+ list_entry(ptr, struct ieee80211_sub_if_data, list);
+ if (sdata->type != IEEE80211_SUB_IF_TYPE_STA)
+ continue;
+ if (!multicast &&
+ memcmp(a1, sdata->dev->dev_addr, ETH_ALEN) != 0)
+ continue;
+
+ if (memcmp(addr, sdata->u.sta.bssid, ETH_ALEN) == 0 ||
+ (memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) == 0 &&
+ local->conf.mode == IW_MODE_ADHOC)) {
+ *sta_multicast = multicast;
+ return sdata->dev;
+ }
+ }
+
+ return NULL;
+}
+
+
+static int ieee80211_own_addr(struct net_device *dev, u8 *addr)
+{
+ struct ieee80211_local *local = dev->priv;
+ u8 *own = dev->dev_addr;
+ int index;
+
+ /* Optimization: assume that BSSID mask does not change for first
+ * three octets. */
+ if (own[0] != addr[0] || own[1] != addr[1] || own[2] != addr[2])
+ return 0;
+
+ index = (((int) addr[3] << 16) | ((int) addr[4] << 8) | addr[5]) -
+ (((int) own[3] << 16) | ((int) own[4] << 8) | own[5]);
+ if (index >= 0 && index < local->conf.bss_count &&
+ local->sta_devs[index])
+ return 1;
+
+ return 0;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_rx_h_data(struct ieee80211_txrx_data *rx)
+{
+ struct net_device *dev = rx->dev;
+ struct ieee80211_local *local = rx->local;
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) rx->skb->data;
+ u16 fc, hdrlen, ethertype;
+ u8 *payload;
+ u8 dst[ETH_ALEN];
+ u8 src[ETH_ALEN];
+ struct sk_buff *skb = rx->skb, *skb2;
+ struct ieee80211_sub_if_data *sdata;
+
+ fc = rx->fc;
+ if (unlikely(WLAN_FC_GET_TYPE(fc) != WLAN_FC_TYPE_DATA))
+ return TXRX_CONTINUE;
+
+ if (unlikely(!WLAN_FC_DATA_PRESENT(fc)))
+ return TXRX_DROP;
+
+ hdrlen = ieee80211_get_hdrlen(fc);
+
+ /* convert IEEE 802.11 header + possible LLC headers into Ethernet
+ * header
+ * IEEE 802.11 address fields:
+ * ToDS FromDS Addr1 Addr2 Addr3 Addr4
+ * 0 0 DA SA BSSID n/a
+ * 0 1 DA BSSID SA n/a
+ * 1 0 BSSID SA DA n/a
+ * 1 1 RA TA DA SA
+ */
+
+ switch (fc & (WLAN_FC_TODS | WLAN_FC_FROMDS)) {
+ case WLAN_FC_TODS:
+ /* BSSID SA DA */
+ memcpy(dst, hdr->addr3, ETH_ALEN);
+ memcpy(src, hdr->addr2, ETH_ALEN);
+
+ if (unlikely(local->conf.mode != IW_MODE_MASTER ||
+ !ieee80211_own_bssid(local, hdr->addr1))) {
+ printk(KERN_DEBUG "%s: dropped ToDS frame (BSSID="
+ MACSTR " SA=" MACSTR " DA=" MACSTR ")\n",
+ dev->name, MAC2STR(hdr->addr1),
+ MAC2STR(hdr->addr2), MAC2STR(hdr->addr3));
+ return TXRX_DROP;
+ }
+ break;
+ case (WLAN_FC_TODS | WLAN_FC_FROMDS):
+ /* RA TA DA SA */
+ memcpy(dst, hdr->addr3, ETH_ALEN);
+ memcpy(src, hdr->addr4, ETH_ALEN);
+
+ dev = ieee80211_get_wds_dev(local, hdr->addr2);
+ if (!dev || memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) != 0) {
+ printk(KERN_DEBUG "%s: dropped FromDS&ToDS frame (RA="
+ MACSTR " TA=" MACSTR " DA=" MACSTR " SA="
+ MACSTR ")\n",
+ rx->dev->name, MAC2STR(hdr->addr1),
+ MAC2STR(hdr->addr2), MAC2STR(hdr->addr3),
+ MAC2STR(hdr->addr4));
+ return TXRX_DROP;
+ }
+ break;
+ case WLAN_FC_FROMDS:
+ /* DA BSSID SA */
+ memcpy(dst, hdr->addr1, ETH_ALEN);
+ memcpy(src, hdr->addr3, ETH_ALEN);
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (sdata->type != IEEE80211_SUB_IF_TYPE_STA ||
+ memcmp(hdr->addr3, dev->dev_addr, ETH_ALEN) == 0 ||
+ memcmp(hdr->addr2, sdata->u.sta.bssid, ETH_ALEN) != 0) {
+ return TXRX_DROP;
+ }
+ break;
+ case 0:
+ /* DA SA BSSID */
+ memcpy(dst, hdr->addr1, ETH_ALEN);
+ memcpy(src, hdr->addr2, ETH_ALEN);
+
+ if (local->conf.mode != IW_MODE_ADHOC ||
+ memcmp(hdr->addr3, local->bssid, ETH_ALEN) != 0) {
+ if (net_ratelimit()) {
+ printk(KERN_DEBUG "%s: dropped IBSS frame (DA="
+ MACSTR " SA=" MACSTR " BSSID=" MACSTR
+ ")\n",
+ dev->name, MAC2STR(hdr->addr1),
+ MAC2STR(hdr->addr2),
+ MAC2STR(hdr->addr3));
+ }
+ return TXRX_DROP;
+ }
+ break;
+ }
+
+ payload = skb->data + hdrlen;
+
+ if (unlikely(skb->len - hdrlen < 8)) {
+ if (net_ratelimit()) {
+ printk(KERN_DEBUG "%s: RX too short data frame "
+ "payload\n", dev->name);
+ }
+ return TXRX_DROP;
+ }
+
+ ethertype = (payload[6] << 8) | payload[7];
+
+ if (likely((memcmp(payload, rfc1042_header, 6) == 0 &&
+ ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
+ memcmp(payload, bridge_tunnel_header, 6) == 0)) {
+ /* remove RFC1042 or Bridge-Tunnel encapsulation and
+ * replace EtherType */
+ skb_pull(skb, hdrlen + 6);
+ memcpy(skb_push(skb, ETH_ALEN), src, ETH_ALEN);
+ memcpy(skb_push(skb, ETH_ALEN), dst, ETH_ALEN);
+ } else {
+ struct ethhdr *ehdr;
+ unsigned short len;
+ skb_pull(skb, hdrlen);
+ len = htons(skb->len);
+ ehdr = (struct ethhdr *)skb_push(skb, sizeof(struct ethhdr));
+ memcpy(ehdr->h_dest, dst, ETH_ALEN);
+ memcpy(ehdr->h_source, src, ETH_ALEN);
+ ehdr->h_proto = len;
+ }
+
+ if (rx->sta && !rx->sta->assoc_ap &&
+ !(rx->sta && (rx->sta->flags & WLAN_STA_WDS)))
+ skb->dev = rx->sta->dev;
+ else
+ skb->dev = dev;
+
+ skb2 = NULL;
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ /*
+ * don't count the master since the low level code
+ * counts it already for us.
+ */
+ if (skb->dev != sdata->master) {
+ sdata->stats.rx_packets++;
+ sdata->stats.rx_bytes += skb->len;
+ }
+
+ if (local->bridge_packets && sdata->type != IEEE80211_SUB_IF_TYPE_WDS
+ && sdata->type != IEEE80211_SUB_IF_TYPE_STA) {
+ if (MULTICAST_ADDR(skb->data)) {
+ /* send multicast frames both to higher layers in
+ * local net stack and back to the wireless media */
+ skb2 = skb_copy(skb, GFP_ATOMIC);
+ if (skb2 == NULL)
+ printk(KERN_DEBUG "%s: failed to clone "
+ "multicast frame\n", dev->name);
+ } else {
+ struct sta_info *dsta;
+ dsta = sta_info_get(local, skb->data);
+ if (dsta && dsta->dev == NULL) {
+ printk(KERN_DEBUG "Station with null dev "
+ "structure!\n");
+ } else if (dsta && dsta->dev == dev) {
+ /* Destination station is associated to this
+ * AP, so send the frame directly to it and
+ * do not pass the frame to local net stack.
+ */
+ skb2 = skb;
+ skb = NULL;
+ }
+ if (dsta)
+ sta_info_release(local, dsta);
+ }
+ }
+
+ if (skb) {
+ /* deliver to local stack */
+ skb->protocol = eth_type_trans(skb, dev);
+ memset(skb->cb, 0, sizeof(skb->cb));
+ netif_rx(skb);
+ }
+
+ if (skb2) {
+ /* send to wireless media */
+ skb2->protocol = __constant_htons(ETH_P_802_3);
+ skb2->mac.raw = skb2->nh.raw = skb2->data;
+ dev_queue_xmit(skb2);
+ }
+
+ return TXRX_QUEUED;
+}
+
+
+static struct ieee80211_rate *
+ieee80211_get_rate(struct ieee80211_local *local, int phymode, int hw_rate)
+{
+ int m, r;
+
+ for (m = 0; m < local->hw->num_modes; m++) {
+ struct ieee80211_hw_modes *mode = &local->hw->modes[m];
+ if (mode->mode != phymode)
+ continue;
+ for (r = 0; r < mode->num_rates; r++) {
+ struct ieee80211_rate *rate = &mode->rates[r];
+ if (rate->val == hw_rate ||
+ (rate->flags & IEEE80211_RATE_PREAMBLE2 &&
+ rate->val2 == hw_rate))
+ return rate;
+ }
+ }
+
+ return NULL;
+}
+
+
+void
+ieee80211_rx_mgmt(struct net_device *dev, struct sk_buff *skb,
+ struct ieee80211_rx_status *status, u32 msg_type)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct ieee80211_frame_info *fi;
+ size_t hlen;
+ struct ieee80211_sub_if_data *sdata;
+
+ dev = local->apdev;
+ skb->dev = dev;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ if (skb_headroom(skb) < sizeof(struct ieee80211_frame_info)) {
+ I802_DEBUG_INC(local->rx_expand_skb_head);
+ if (pskb_expand_head(skb, sizeof(struct ieee80211_frame_info),
+ 0, GFP_ATOMIC)) {
+ dev_kfree_skb(skb);
+ return;
+ }
+ }
+
+ hlen = sizeof(struct ieee80211_frame_info);
+ if (msg_type == ieee80211_msg_monitor)
+ hlen -= sizeof(fi->msg_type);
+
+ fi = (struct ieee80211_frame_info *) skb_push(skb, hlen);
+ memset(fi, 0, hlen);
+ if (msg_type != ieee80211_msg_monitor)
+ fi->msg_type = htonl(msg_type);
+ fi->version = htonl(IEEE80211_FI_VERSION);
+ fi->length = htonl(hlen);
+ if (status) {
+// struct timespec ts;
+ struct ieee80211_rate *rate;
+
+#if 0
+ jiffies_to_timespec(status->hosttime, &ts);
+ fi->hosttime = cpu_to_be64(ts.tv_sec * 1000000 +
+ ts.tv_nsec / 1000);
+ fi->mactime = cpu_to_be64(status->mactime);
+#endif
+ switch (status->phymode) {
+ case MODE_IEEE80211A:
+ fi->phytype = htonl(ieee80211_phytype_ofdm_dot11_a);
+ break;
+ case MODE_IEEE80211B:
+ fi->phytype = htonl(ieee80211_phytype_dsss_dot11_b);
+ break;
+ case MODE_IEEE80211G:
+ fi->phytype = htonl(ieee80211_phytype_pbcc_dot11_g);
+ break;
+ case MODE_ATHEROS_TURBO:
+ fi->phytype =
+ htonl(ieee80211_phytype_dsss_dot11_turbo);
+ break;
+ default:
+ fi->phytype = 0xAAAAAAAA;
+ break;
+ }
+ fi->channel = htonl(status->channel);
+ rate = ieee80211_get_rate(local, status->phymode,
+ status->rate);
+ if (rate) {
+ fi->datarate = htonl(rate->rate);
+ if (rate->flags & IEEE80211_RATE_PREAMBLE2) {
+ if (status->rate == rate->val)
+ fi->preamble = htonl(2); /* long */
+ else if (status->rate == rate->val2)
+ fi->preamble = htonl(1); /* short */
+ } else
+ fi->preamble = htonl(0);
+ } else {
+ fi->datarate = htonl(0);
+ fi->preamble = htonl(0);
+ }
+
+ fi->antenna = htonl(status->antenna);
+ fi->priority = 0xffffffff; /* no clue */
+ fi->ssi_type = htonl(ieee80211_ssi_raw);
+ fi->ssi_signal = htonl(status->ssi);
+ fi->ssi_noise = 0x00000000;
+ fi->encoding = 0;
+ } else {
+ fi->ssi_type = htonl(ieee80211_ssi_none);
+ }
+
+ sdata->stats.rx_packets++;
+ sdata->stats.rx_bytes += skb->len;
+
+ skb->mac.raw = skb->data;
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ skb->pkt_type = PACKET_OTHERHOST;
+ skb->protocol = __constant_htons(ETH_P_802_2);
+ memset(skb->cb, 0, sizeof(skb->cb));
+ netif_rx(skb);
+}
+
+
+int ieee80211_radar_status(struct net_device *dev, int channel, int radar,
+ int radar_type)
+{
+ struct sk_buff *skb;
+ struct ieee80211_radar_info *msg;
+
+ skb = dev_alloc_skb(sizeof(struct ieee80211_frame_info) +
+ sizeof(struct ieee80211_radar_info));
+
+ if (skb == NULL)
+ return -ENOMEM;
+ skb_reserve(skb, sizeof(struct ieee80211_frame_info));
+
+ msg = (struct ieee80211_radar_info *)
+ skb_put(skb, sizeof(struct ieee80211_radar_info));
+ msg->channel = channel;
+ msg->radar = radar;
+ msg->radar_type = radar_type;
+
+ ieee80211_rx_mgmt(dev, skb, 0, ieee80211_msg_radar);
+ return 0;
+}
+
+
+int ieee80211_set_aid_for_sta(struct net_device *dev, u8 *peer_address,
+ u16 aid)
+{
+ struct sk_buff *skb;
+ struct ieee80211_msg_set_aid_for_sta *msg;
+
+ skb = dev_alloc_skb(sizeof(struct ieee80211_frame_info) +
+ sizeof(struct ieee80211_msg_set_aid_for_sta));
+
+ if (skb == NULL)
+ return -ENOMEM;
+ skb_reserve(skb, sizeof(struct ieee80211_frame_info));
+
+ msg = (struct ieee80211_msg_set_aid_for_sta *)
+ skb_put(skb, sizeof(struct ieee80211_msg_set_aid_for_sta));
+ memcpy(msg->sta_address, peer_address, ETH_ALEN);
+ msg->aid = aid;
+
+ ieee80211_rx_mgmt(dev, skb, 0, ieee80211_msg_set_aid_for_sta);
+ return 0;
+}
+
+
+static void ap_sta_ps_start(struct net_device *dev, struct sta_info *sta)
+{
+ struct ieee80211_sub_if_data *sdata;
+ sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev);
+
+ if (sdata->bss)
+ atomic_inc(&sdata->bss->num_sta_ps);
+ sta->flags |= WLAN_STA_PS;
+ sta->pspoll = 0;
+#ifdef IEEE80211_VERBOSE_DEBUG_PS
+ printk(KERN_DEBUG "%s: STA " MACSTR " aid %d enters power "
+ "save mode\n", dev->name, MAC2STR(sta->addr), sta->aid);
+#endif /* IEEE80211_VERBOSE_DEBUG_PS */
+}
+
+
+static int ap_sta_ps_end(struct net_device *dev, struct sta_info *sta)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct sk_buff *skb;
+ int sent = 0;
+ struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_tx_packet_data *pkt_data;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev);
+ if (sdata->bss)
+ atomic_dec(&sdata->bss->num_sta_ps);
+ sta->flags &= ~(WLAN_STA_PS | WLAN_STA_TIM);
+ sta->pspoll = 0;
+ if (!skb_queue_empty(&sta->ps_tx_buf) && local->hw->set_tim)
+ local->hw->set_tim(dev, sta->aid, 0);
+#ifdef IEEE80211_VERBOSE_DEBUG_PS
+ printk(KERN_DEBUG "%s: STA " MACSTR " aid %d exits power "
+ "save mode\n", dev->name, MAC2STR(sta->addr), sta->aid);
+#endif /* IEEE80211_VERBOSE_DEBUG_PS */
+ /* Send all buffered frames to the station */
+ while ((skb = skb_dequeue(&sta->tx_filtered)) != NULL) {
+ pkt_data = (struct ieee80211_tx_packet_data *) skb->cb;
+ sent++;
+ pkt_data->control.requeue = 1;
+ dev_queue_xmit(skb);
+ }
+ while ((skb = skb_dequeue(&sta->ps_tx_buf)) != NULL) {
+ pkt_data = (struct ieee80211_tx_packet_data *) skb->cb;
+ local->total_ps_buffered--;
+ sent++;
+#ifdef IEEE80211_VERBOSE_DEBUG_PS
+ printk(KERN_DEBUG "%s: STA " MACSTR " aid %d send PS frame "
+ "since STA not sleeping anymore\n", dev->name,
+ MAC2STR(sta->addr), sta->aid);
+#endif /* IEEE80211_VERBOSE_DEBUG_PS */
+ pkt_data->control.requeue = 1;
+ dev_queue_xmit(skb);
+ }
+
+ return sent;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_rx_h_ieee80211_rx_h_ps_poll(struct ieee80211_txrx_data *rx)
+{
+ struct sk_buff *skb;
+ int no_pending_pkts;
+
+ if (likely(!rx->sta || WLAN_FC_GET_TYPE(rx->fc) != WLAN_FC_TYPE_CTRL ||
+ WLAN_FC_GET_STYPE(rx->fc) != WLAN_FC_STYPE_PSPOLL))
+ return TXRX_CONTINUE;
+
+ skb = skb_dequeue(&rx->sta->tx_filtered);
+ if (skb == NULL) {
+ skb = skb_dequeue(&rx->sta->ps_tx_buf);
+ if (skb)
+ rx->local->total_ps_buffered--;
+ }
+ no_pending_pkts = skb_queue_empty(&rx->sta->tx_filtered) &&
+ skb_queue_empty(&rx->sta->ps_tx_buf);
+
+ if (skb) {
+ struct ieee80211_hdr *hdr =
+ (struct ieee80211_hdr *) skb->data;
+
+ /* tell TX path to send one frame even though the STA may
+ * still remain is PS mode after this frame exchange */
+ rx->sta->pspoll = 1;
+
+#ifdef IEEE80211_VERBOSE_DEBUG_PS
+ printk(KERN_DEBUG "STA " MACSTR " aid %d: PS Poll (entries "
+ "after %d)\n",
+ MAC2STR(rx->sta->addr), rx->sta->aid,
+ skb_queue_len(&rx->sta->ps_tx_buf));
+#endif /* IEEE80211_VERBOSE_DEBUG_PS */
+
+ /* Use MoreData flag to indicate whether there are more
+ * buffered frames for this STA */
+ if (no_pending_pkts) {
+ hdr->frame_control &= cpu_to_le16(~WLAN_FC_MOREDATA);
+ rx->sta->flags &= ~WLAN_STA_TIM;
+ } else
+ hdr->frame_control |= cpu_to_le16(WLAN_FC_MOREDATA);
+
+ dev_queue_xmit(skb);
+
+ if (no_pending_pkts && rx->local->hw->set_tim)
+ rx->local->hw->set_tim(rx->dev, rx->sta->aid, 0);
+#ifdef IEEE80211_VERBOSE_DEBUG_PS
+ } else if (!rx->u.rx.sent_ps_buffered) {
+ printk(KERN_DEBUG "%s: STA " MACSTR " sent PS Poll even "
+ "though there is no buffered frames for it\n",
+ rx->dev->name, MAC2STR(rx->sta->addr));
+#endif /* IEEE80211_VERBOSE_DEBUG_PS */
+
+ }
+
+ /* Free PS Poll skb here instead of returning TXRX_DROP that would
+ * count as an dropped frame. */
+ dev_kfree_skb(rx->skb);
+
+ return TXRX_QUEUED;
+}
+
+
+static inline struct ieee80211_fragment_entry *
+ieee80211_reassemble_add(struct ieee80211_local *local,
+ unsigned int frag, unsigned int seq, int rx_queue,
+ struct sk_buff **skb)
+{
+ struct ieee80211_fragment_entry *entry;
+ int idx;
+
+ idx = local->fragment_next;
+ entry = &local->fragments[local->fragment_next++];
+ if (local->fragment_next >= IEEE80211_FRAGMENT_MAX)
+ local->fragment_next = 0;
+
+ if (entry->skb) {
+#ifdef CONFIG_IEEE80211_DEBUG
+ struct ieee80211_hdr *hdr =
+ (struct ieee80211_hdr *) entry->skb->data;
+ printk(KERN_DEBUG "%s: RX reassembly removed oldest "
+ "fragment entry (idx=%d age=%lu seq=%d last_frag=%d "
+ "addr1=" MACSTR " addr2=" MACSTR "\n",
+ local->mdev->name, idx,
+ jiffies - entry->first_frag_time, entry->seq,
+ entry->last_frag, MAC2STR(hdr->addr1),
+ MAC2STR(hdr->addr2));
+#endif /* CONFIG_IEEE80211_DEBUG */
+ dev_kfree_skb(entry->skb);
+ }
+
+ entry->skb = *skb;
+ *skb = NULL;
+ entry->first_frag_time = jiffies;
+ entry->seq = seq;
+ entry->rx_queue = rx_queue;
+ entry->last_frag = frag;
+ entry->ccmp = 0;
+
+ return entry;
+}
+
+
+static inline struct ieee80211_fragment_entry *
+ieee80211_reassemble_find(struct ieee80211_local *local,
+ u16 fc, unsigned int frag, unsigned int seq,
+ int rx_queue, struct ieee80211_hdr *hdr)
+{
+ struct ieee80211_fragment_entry *entry;
+ int i, idx;
+
+ idx = local->fragment_next;
+ for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) {
+ struct ieee80211_hdr *f_hdr;
+ u16 f_fc;
+
+ idx--;
+ if (idx < 0)
+ idx = IEEE80211_FRAGMENT_MAX - 1;
+
+ entry = &local->fragments[idx];
+ if (!entry->skb || entry->seq != seq ||
+ entry->rx_queue != rx_queue ||
+ entry->last_frag + 1 != frag)
+ continue;
+
+ f_hdr = (struct ieee80211_hdr *) entry->skb->data;
+ f_fc = le16_to_cpu(f_hdr->frame_control);
+
+ if (WLAN_FC_GET_TYPE(fc) != WLAN_FC_GET_TYPE(f_fc) ||
+ memcmp(hdr->addr1, f_hdr->addr1, ETH_ALEN) != 0 ||
+ memcmp(hdr->addr2, f_hdr->addr2, ETH_ALEN) != 0)
+ continue;
+
+ if (entry->first_frag_time + 2 * HZ < jiffies) {
+ dev_kfree_skb(entry->skb);
+ entry->skb = NULL;
+ continue;
+ }
+ return entry;
+ }
+
+ return NULL;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_rx_h_defragment(struct ieee80211_txrx_data *rx)
+{
+ struct ieee80211_hdr *hdr;
+ u16 sc;
+ unsigned int frag, seq;
+ struct ieee80211_fragment_entry *entry;
+
+ hdr = (struct ieee80211_hdr *) rx->skb->data;
+ sc = le16_to_cpu(hdr->seq_ctrl);
+ frag = WLAN_GET_SEQ_FRAG(sc);
+
+ if (likely((!(rx->fc & WLAN_FC_MOREFRAG) && frag == 0) ||
+ (rx->skb)->len < 24 || MULTICAST_ADDR(hdr->addr1))) {
+ /* not fragmented */
+ goto out;
+ }
+ I802_DEBUG_INC(rx->local->rx_handlers_fragments);
+
+ seq = WLAN_GET_SEQ_SEQ(sc);
+
+ if (frag == 0) {
+ /* This is the first fragment of a new frame. */
+ entry = ieee80211_reassemble_add(rx->local, frag, seq,
+ rx->u.rx.queue, &(rx->skb));
+ if (rx->key && rx->key->alg == ALG_CCMP &&
+ (rx->fc & WLAN_FC_ISWEP)) {
+ /* Store CCMP PN so that we can verify that the next
+ * fragment has a sequential PN value. */
+ entry->ccmp = 1;
+ memcpy(entry->last_pn,
+ rx->key->u.ccmp.rx_pn[rx->u.rx.queue],
+ CCMP_PN_LEN);
+ }
+ return TXRX_QUEUED;
+ }
+
+ /* This is a fragment for a frame that should already be pending in
+ * fragment cache. Add this fragment to the end of the pending entry.
+ */
+ entry = ieee80211_reassemble_find(rx->local, rx->fc, frag, seq,
+ rx->u.rx.queue, hdr);
+ if (!entry) {
+ I802_DEBUG_INC(rx->local->rx_handlers_drop_defrag);
+ return TXRX_DROP;
+ }
+
+ /* Verify that MPDUs within one MSDU have sequential PN values.
+ * (IEEE 802.11i, 8.3.3.4.5) */
+ if (entry->ccmp) {
+ int i;
+ u8 pn[CCMP_PN_LEN], *rpn;
+ if (rx->key == NULL || rx->key->alg != ALG_CCMP)
+ return TXRX_DROP;
+ memcpy(pn, entry->last_pn, CCMP_PN_LEN);
+ for (i = CCMP_PN_LEN - 1; i >= 0; i--) {
+ pn[i]++;
+ if (pn[i])
+ break;
+ }
+ rpn = rx->key->u.ccmp.rx_pn[rx->u.rx.queue];
+ if (memcmp(pn, rpn, CCMP_PN_LEN) != 0) {
+ printk(KERN_DEBUG "%s: defrag: CCMP PN not sequential"
+ " A2=" MACSTR " PN=%02x%02x%02x%02x%02x%02x "
+ "(expected %02x%02x%02x%02x%02x%02x)\n",
+ rx->dev->name, MAC2STR(hdr->addr2),
+ rpn[0], rpn[1], rpn[2], rpn[3], rpn[4], rpn[5],
+ pn[0], pn[1], pn[2], pn[3], pn[4], pn[5]);
+ return TXRX_DROP;
+ }
+ memcpy(entry->last_pn, pn, CCMP_PN_LEN);
+ }
+
+ /* TODO: could gather list of skb's and reallocate data buffer only
+ * after finding out the total length of the frame */
+ skb_pull(rx->skb, ieee80211_get_hdrlen(rx->fc));
+ if (skb_tailroom(entry->skb) < rx->skb->len) {
+ I802_DEBUG_INC(rx->local->rx_expand_skb_head2);
+ if (unlikely(pskb_expand_head(entry->skb, 0, rx->skb->len,
+ GFP_ATOMIC))) {
+ I802_DEBUG_INC(rx->local->rx_handlers_drop_defrag);
+ return TXRX_DROP;
+ }
+ }
+ memcpy(skb_put(entry->skb, rx->skb->len), rx->skb->data, rx->skb->len);
+ entry->last_frag = frag;
+ dev_kfree_skb(rx->skb);
+
+ if (rx->fc & WLAN_FC_MOREFRAG) {
+ rx->skb = NULL;
+ return TXRX_QUEUED;
+ }
+
+ /* Complete frame has been reassembled - process it now */
+ rx->skb = entry->skb;
+ rx->fragmented = 1;
+ entry->skb = NULL;
+
+ out:
+ if (rx->sta)
+ rx->sta->rx_packets++;
+ if (MULTICAST_ADDR(hdr->addr1))
+ rx->local->dot11MulticastReceivedFrameCount++;
+#ifdef IEEE80211_LEDS
+ else
+ ieee80211_rx_led(2, rx->dev);
+#endif /* IEEE80211_LEDS */
+ return TXRX_CONTINUE;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_rx_h_monitor(struct ieee80211_txrx_data *rx)
+{
+ if (rx->local->conf.mode == IW_MODE_MONITOR) {
+ ieee80211_rx_mgmt(rx->dev, rx->skb, rx->u.rx.status,
+ ieee80211_msg_monitor);
+ return TXRX_QUEUED;
+ }
+
+ return TXRX_CONTINUE;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_rx_h_check(struct ieee80211_txrx_data *rx)
+{
+ struct ieee80211_hdr *hdr;
+ int always_sta_key;
+ hdr = (struct ieee80211_hdr *) rx->skb->data;
+
+ /* Drop duplicate 802.11 retransmissions (IEEE 802.11 Chap. 9.2.9) */
+ if (rx->sta && !MULTICAST_ADDR(hdr->addr1)) {
+ if (unlikely(rx->fc & WLAN_FC_RETRY &&
+ rx->sta->last_seq_ctrl[rx->u.rx.queue] ==
+ hdr->seq_ctrl)) {
+ rx->local->dot11FrameDuplicateCount++;
+ rx->sta->num_duplicates++;
+ return TXRX_DROP;
+ } else
+ rx->sta->last_seq_ctrl[rx->u.rx.queue] = hdr->seq_ctrl;
+ }
+
+ if (rx->local->hw->rx_includes_fcs && rx->skb->len > FCS_LEN)
+ skb_trim(rx->skb, rx->skb->len - FCS_LEN);
+
+ if (unlikely(rx->skb->len < 16)) {
+ I802_DEBUG_INC(rx->local->rx_handlers_drop_short);
+ return TXRX_DROP;
+ }
+
+ /* Filter out foreign unicast packets when in promiscuous mode.
+ * FIX: Filter out multicast to foreign BSSID. */
+ if (rx->local->conf.mode == IW_MODE_INFRA &&
+ !MULTICAST_ADDR(hdr->addr1) &&
+ !ieee80211_own_addr(rx->dev, hdr->addr1))
+ return TXRX_DROP;
+
+ /* Drop disallowed frame classes based on STA auth/assoc state;
+ * IEEE 802.11, Chap 5.5.
+ *
+ * 80211.o does filtering only based on association state, i.e., it
+ * drops Class 3 frames from not associated stations. hostapd sends
+ * deauth/disassoc frames when needed. In addition, hostapd is
+ * responsible for filtering on both auth and assoc states.
+ */
+ if (unlikely((WLAN_FC_GET_TYPE(rx->fc) == WLAN_FC_TYPE_DATA ||
+ (WLAN_FC_GET_TYPE(rx->fc) == WLAN_FC_TYPE_CTRL &&
+ WLAN_FC_GET_STYPE(rx->fc) == WLAN_FC_STYPE_PSPOLL)) &&
+ rx->local->conf.mode != IW_MODE_ADHOC &&
+ (!rx->sta || !(rx->sta->flags & WLAN_STA_ASSOC)))) {
+ if (!(rx->fc & WLAN_FC_FROMDS) && !(rx->fc & WLAN_FC_TODS)) {
+ /* Drop IBSS frames silently. */
+ return TXRX_DROP;
+ }
+
+ ieee80211_rx_mgmt(rx->dev, rx->skb, rx->u.rx.status,
+ ieee80211_msg_sta_not_assoc);
+ return TXRX_QUEUED;
+ }
+
+ if (rx->local->conf.mode == IW_MODE_INFRA)
+ always_sta_key = 0;
+ else
+ always_sta_key = 1;
+
+ if (rx->sta && rx->sta->key && always_sta_key) {
+ rx->key = rx->sta->key;
+ } else {
+ if (!rx->sdata) {
+ printk(KERN_DEBUG "%s: sdata was null in packet!!\n",
+ rx->dev->name);
+ printk(KERN_DEBUG "%s: Addr1: " MACSTR "\n",
+ rx->dev->name, MAC2STR(hdr->addr1));
+ printk(KERN_DEBUG "%s: Addr2: " MACSTR "\n",
+ rx->dev->name, MAC2STR(hdr->addr2));
+ printk(KERN_DEBUG "%s: Addr3: " MACSTR "\n",
+ rx->dev->name, MAC2STR(hdr->addr3));
+ return TXRX_DROP;
+ }
+ if (rx->sta && rx->sta->key)
+ rx->key = rx->sta->key;
+ else
+ rx->key = rx->sdata->default_key;
+
+ if (rx->local->hw->wep_include_iv &&
+ rx->fc & WLAN_FC_ISWEP) {
+ int keyidx = ieee80211_wep_get_keyidx(rx->skb);
+
+ if (keyidx >= 0 && keyidx < NUM_DEFAULT_KEYS &&
+ (rx->sta == NULL || rx->sta->key == NULL ||
+ keyidx > 0)) {
+ rx->key = rx->sdata->keys[keyidx];
+ }
+ if (!rx->key) {
+ printk(KERN_DEBUG "%s: RX WEP frame with "
+ "unknown keyidx %d (A1=" MACSTR " A2="
+ MACSTR " A3=" MACSTR ")\n",
+ rx->dev->name, keyidx,
+ MAC2STR(hdr->addr1),
+ MAC2STR(hdr->addr2),
+ MAC2STR(hdr->addr3));
+ ieee80211_rx_mgmt(
+ rx->dev, rx->skb, rx->u.rx.status,
+ ieee80211_msg_wep_frame_unknown_key);
+ return TXRX_QUEUED;
+ }
+ }
+ }
+
+ if (rx->fc & WLAN_FC_ISWEP && rx->key) {
+ rx->key->tx_rx_count++;
+ if (unlikely(rx->local->key_tx_rx_threshold &&
+ rx->key->tx_rx_count >
+ rx->local->key_tx_rx_threshold)) {
+ ieee80211_key_threshold_notify(rx->dev, rx->key,
+ rx->sta);
+ }
+ }
+
+ return TXRX_CONTINUE;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_rx_h_sta_process(struct ieee80211_txrx_data *rx)
+{
+ struct sta_info *sta = rx->sta;
+ struct net_device *dev = rx->dev;
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) rx->skb->data;
+
+ if (!sta)
+ return TXRX_CONTINUE;
+
+ /* Update last_rx only for IBSS packets which are for the current
+ * BSSID to avoid keeping the current IBSS network alive in cases where
+ * other STAs are using different BSSID. */
+ if (rx->local->conf.mode == IW_MODE_ADHOC) {
+ u8 *bssid = ieee80211_get_bssid(hdr, rx->skb->len);
+ if (memcmp(bssid, rx->local->bssid, ETH_ALEN) == 0)
+ sta->last_rx = jiffies;
+ } else
+ if (!MULTICAST_ADDR(hdr->addr1) ||
+ rx->local->conf.mode == IW_MODE_INFRA) {
+ /* Update last_rx only for unicast frames in order to prevent
+ * the Probe Request frames (the only broadcast frames from a
+ * STA in infrastructure mode) from keeping a connection alive.
+ */
+ sta->last_rx = jiffies;
+ }
+ sta->rx_fragments++;
+ sta->rx_bytes += rx->skb->len;
+ sta->last_rssi = rx->u.rx.status->ssi;
+
+ if (!(rx->fc & WLAN_FC_MOREFRAG)) {
+ /* Change STA power saving mode only in the end of a frame
+ * exchange sequence */
+ if ((sta->flags & WLAN_STA_PS) && !(rx->fc & WLAN_FC_PWRMGT))
+ rx->u.rx.sent_ps_buffered += ap_sta_ps_end(dev, sta);
+ else if (!(sta->flags & WLAN_STA_PS) &&
+ (rx->fc & WLAN_FC_PWRMGT))
+ ap_sta_ps_start(dev, sta);
+ }
+
+ /* Drop data::nullfunc frames silently, since they are used only to
+ * control station power saving mode. */
+ if (WLAN_FC_GET_TYPE(rx->fc) == WLAN_FC_TYPE_DATA &&
+ WLAN_FC_GET_STYPE(rx->fc) == WLAN_FC_STYPE_NULLFUNC) {
+ I802_DEBUG_INC(rx->local->rx_handlers_drop_nullfunc);
+ /* Update counter and free packet here to avoid counting this
+ * as a dropped packed. */
+ sta->rx_packets++;
+ dev_kfree_skb(rx->skb);
+ return TXRX_QUEUED;
+ }
+
+ return TXRX_CONTINUE;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_rx_h_wep_weak_iv_detection(struct ieee80211_txrx_data *rx)
+{
+ if (!rx->sta || !(rx->fc & WLAN_FC_ISWEP) ||
+ WLAN_FC_GET_TYPE(rx->fc) != WLAN_FC_TYPE_DATA || !rx->key ||
+ rx->key->alg != ALG_WEP)
+ return TXRX_CONTINUE;
+
+ /* Check for weak IVs, if hwaccel did not remove IV from the frame */
+ if (rx->local->hw->wep_include_iv ||
+ rx->key->force_sw_encrypt || rx->local->conf.sw_decrypt) {
+ u8 *iv = ieee80211_wep_is_weak_iv(rx->skb, rx->key);
+ if (iv) {
+ rx->sta->wep_weak_iv_count++;
+ }
+ }
+
+ return TXRX_CONTINUE;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_rx_h_wep_decrypt(struct ieee80211_txrx_data *rx)
+{
+ /* If the device handles decryption totally, skip this test */
+ if (rx->local->hw->device_hides_wep)
+ return TXRX_CONTINUE;
+
+ if ((rx->key && rx->key->alg != ALG_WEP) ||
+ !(rx->fc & WLAN_FC_ISWEP) ||
+ (WLAN_FC_GET_TYPE(rx->fc) != WLAN_FC_TYPE_DATA &&
+ (WLAN_FC_GET_TYPE(rx->fc) != WLAN_FC_TYPE_MGMT ||
+ WLAN_FC_GET_STYPE(rx->fc) != WLAN_FC_STYPE_AUTH)))
+ return TXRX_CONTINUE;
+
+ if (!rx->key) {
+ printk(KERN_DEBUG "%s: RX WEP frame, but no key set\n",
+ rx->dev->name);
+ return TXRX_DROP;
+ }
+
+ if (!(rx->u.rx.status->flag & RX_FLAG_DECRYPTED) ||
+ rx->key->force_sw_encrypt || rx->local->conf.sw_decrypt) {
+ if (ieee80211_wep_decrypt(rx->local, rx->skb, rx->key)) {
+ printk(KERN_DEBUG "%s: RX WEP frame, decrypt "
+ "failed\n", rx->dev->name);
+ return TXRX_DROP;
+ }
+ } else if (rx->local->hw->wep_include_iv) {
+ ieee80211_wep_remove_iv(rx->local, rx->skb, rx->key);
+ /* remove ICV */
+ skb_trim(rx->skb, rx->skb->len - 4);
+ }
+
+ return TXRX_CONTINUE;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_rx_h_802_1x_pae(struct ieee80211_txrx_data *rx)
+{
+ if (rx->sdata->eapol && ieee80211_is_eapol(rx->skb) &&
+ rx->local->conf.mode != IW_MODE_INFRA) {
+ /* Pass both encrypted and unencrypted EAPOL frames to user
+ * space for processing. */
+ ieee80211_rx_mgmt(rx->dev, rx->skb, rx->u.rx.status,
+ ieee80211_msg_normal);
+ return TXRX_QUEUED;
+ }
+
+ if (unlikely(rx->sdata->ieee802_1x &&
+ WLAN_FC_GET_TYPE(rx->fc) == WLAN_FC_TYPE_DATA &&
+ WLAN_FC_GET_STYPE(rx->fc) != WLAN_FC_STYPE_NULLFUNC &&
+ (!rx->sta || !(rx->sta->flags & WLAN_STA_AUTHORIZED)) &&
+ !ieee80211_is_eapol(rx->skb))) {
+#ifdef CONFIG_IEEE80211_DEBUG
+ struct ieee80211_hdr *hdr =
+ (struct ieee80211_hdr *) rx->skb->data;
+ printk(KERN_DEBUG "%s: dropped frame from " MACSTR
+ " (unauthorized port)\n", rx->dev->name,
+ MAC2STR(hdr->addr2));
+#endif /* CONFIG_IEEE80211_DEBUG */
+ return TXRX_DROP;
+ }
+
+ return TXRX_CONTINUE;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_rx_h_drop_unencrypted(struct ieee80211_txrx_data *rx)
+{
+ /* If the device handles decryption totally, skip this test */
+ if (rx->local->hw->device_hides_wep)
+ return TXRX_CONTINUE;
+
+ /* Drop unencrypted frames if key is set. */
+ if (unlikely(!(rx->fc & WLAN_FC_ISWEP) &&
+ WLAN_FC_GET_TYPE(rx->fc) == WLAN_FC_TYPE_DATA &&
+ WLAN_FC_GET_STYPE(rx->fc) != WLAN_FC_STYPE_NULLFUNC &&
+ (rx->key || rx->sdata->drop_unencrypted) &&
+ (rx->sdata->eapol == 0 ||
+ !ieee80211_is_eapol(rx->skb)))) {
+ printk(KERN_DEBUG "%s: RX non-WEP frame, but expected "
+ "encryption\n", rx->dev->name);
+ return TXRX_DROP;
+ }
+ return TXRX_CONTINUE;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_rx_h_mgmt(struct ieee80211_txrx_data *rx)
+{
+ struct ieee80211_sub_if_data *sdata;
+ sdata = IEEE80211_DEV_TO_SUB_IF(rx->dev);
+ if (sdata->type == IEEE80211_SUB_IF_TYPE_STA) {
+ ieee80211_sta_rx_mgmt(rx->dev, rx->skb, rx->u.rx.status);
+ } else {
+ /* Management frames are sent to hostapd for processing */
+ ieee80211_rx_mgmt(rx->dev, rx->skb, rx->u.rx.status,
+ ieee80211_msg_normal);
+ }
+ return TXRX_QUEUED;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_rx_h_passive_scan(struct ieee80211_txrx_data *rx)
+{
+ struct ieee80211_local *local = rx->local;
+ struct sk_buff *skb = rx->skb;
+
+ if (unlikely(local->sta_scanning != 0)) {
+ ieee80211_sta_rx_scan(rx->dev, skb, rx->u.rx.status);
+ return TXRX_QUEUED;
+ }
+
+ if (WLAN_FC_GET_TYPE(rx->fc) == WLAN_FC_TYPE_DATA)
+ local->scan.txrx_count++;
+ if (unlikely(local->scan.in_scan != 0 &&
+ rx->u.rx.status->freq == local->scan.freq)) {
+ struct ieee80211_hdr *hdr;
+ u16 fc;
+
+ local->scan.rx_packets++;
+
+ hdr = (struct ieee80211_hdr *) skb->data;
+ fc = le16_to_cpu(hdr->frame_control);
+
+ if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
+ WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON) {
+ local->scan.rx_beacon++;
+ /* Need to trim FCS here because it is normally
+ * removed only after this passive scan handler. */
+ if (rx->local->hw->rx_includes_fcs &&
+ rx->skb->len > FCS_LEN)
+ skb_trim(rx->skb, rx->skb->len - FCS_LEN);
+
+ ieee80211_rx_mgmt(rx->dev, rx->skb, rx->u.rx.status,
+ ieee80211_msg_passive_scan);
+ return TXRX_QUEUED;
+ } else {
+ I802_DEBUG_INC(local->rx_handlers_drop_passive_scan);
+ return TXRX_DROP;
+ }
+ }
+
+ return TXRX_CONTINUE;
+}
+
+
+static u8 * ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len)
+{
+ u16 fc;
+
+ if (len < 24)
+ return NULL;
+
+ fc = le16_to_cpu(hdr->frame_control);
+
+ switch (WLAN_FC_GET_TYPE(fc)) {
+ case WLAN_FC_TYPE_DATA:
+ switch (fc & (WLAN_FC_TODS | WLAN_FC_FROMDS)) {
+ case WLAN_FC_TODS:
+ return hdr->addr1;
+ case (WLAN_FC_TODS | WLAN_FC_FROMDS):
+ return NULL;
+ case WLAN_FC_FROMDS:
+ return hdr->addr2;
+ case 0:
+ return hdr->addr3;
+ }
+ break;
+ case WLAN_FC_TYPE_MGMT:
+ return hdr->addr3;
+ case WLAN_FC_TYPE_CTRL:
+ if (WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PSPOLL)
+ return hdr->addr1;
+ else
+ return NULL;
+ }
+
+ return NULL;
+}
+
+
+static struct net_device * ieee80211_get_rx_dev(struct ieee80211_local *local,
+ struct ieee80211_hdr *hdr,
+ size_t len, int *sta_broadcast)
+{
+ u8 *bssid;
+ struct net_device *dev;
+ u16 fc;
+
+ bssid = ieee80211_get_bssid(hdr, len);
+ if (bssid) {
+ dev = ieee80211_own_bssid(local, bssid);
+ if (!dev && (local->conf.mode == IW_MODE_INFRA ||
+ local->conf.mode == IW_MODE_ADHOC))
+ dev = ieee80211_sta_bssid(local, bssid, hdr->addr1,
+ sta_broadcast);
+ if (dev)
+ return dev;
+ }
+
+ if (len >= 30) {
+ fc = le16_to_cpu(hdr->frame_control);
+ if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_DATA &&
+ (fc & (WLAN_FC_TODS | WLAN_FC_FROMDS)) ==
+ (WLAN_FC_TODS | WLAN_FC_FROMDS)) {
+ dev = ieee80211_get_wds_dev(local, hdr->addr2);
+ if (dev)
+ return dev;
+ }
+ }
+
+ /* Default to default device if nothing else matches */
+ return local->wdev;
+}
+
+
+static void ieee80211_rx_michael_mic_report(struct net_device *dev,
+ struct ieee80211_hdr *hdr,
+ struct sta_info *sta,
+ struct ieee80211_txrx_data *rx)
+{
+ int keyidx, hdrlen;
+
+ hdrlen = ieee80211_get_hdrlen_from_skb(rx->skb);
+ if (rx->skb->len >= hdrlen + 4)
+ keyidx = rx->skb->data[hdrlen + 3] >> 6;
+ else
+ keyidx = -1;
+
+ /* TODO: verify that this is not triggered by fragmented
+ * frames (hw does not verify MIC for them). */
+ printk(KERN_DEBUG "%s: TKIP hwaccel reported Michael MIC "
+ "failure from " MACSTR " to " MACSTR " keyidx=%d\n",
+ dev->name, MAC2STR(hdr->addr2), MAC2STR(hdr->addr1), keyidx);
+
+ if (sta == NULL) {
+ /* Some hardware versions seem to generate incorrect
+ * Michael MIC reports; ignore them to avoid triggering
+ * countermeasures. */
+ printk(KERN_DEBUG "%s: ignored spurious Michael MIC "
+ "error for unknown address " MACSTR "\n",
+ dev->name, MAC2STR(hdr->addr2));
+ goto ignore;
+ }
+
+ if (!(rx->fc & WLAN_FC_ISWEP)) {
+ printk(KERN_DEBUG "%s: ignored spurious Michael MIC "
+ "error for a frame with no ISWEP flag (src "
+ MACSTR ")\n", dev->name, MAC2STR(hdr->addr2));
+ goto ignore;
+ }
+
+ if (rx->local->hw->wep_include_iv &&
+ rx->local->conf.mode == IW_MODE_MASTER) {
+ int keyidx = ieee80211_wep_get_keyidx(rx->skb);
+ /* AP with Pairwise keys support should never receive Michael
+ * MIC errors for non-zero keyidx because these are reserved
+ * for group keys and only the AP is sending real multicast
+ * frames in BSS. */
+ if (keyidx) {
+ printk(KERN_DEBUG "%s: ignored Michael MIC error for "
+ "a frame with non-zero keyidx (%d) (src " MACSTR
+ ")\n", dev->name, keyidx, MAC2STR(hdr->addr2));
+ goto ignore;
+ }
+ }
+
+ if (WLAN_FC_GET_TYPE(rx->fc) != WLAN_FC_TYPE_DATA &&
+ (WLAN_FC_GET_TYPE(rx->fc) != WLAN_FC_TYPE_MGMT ||
+ WLAN_FC_GET_STYPE(rx->fc) != WLAN_FC_STYPE_AUTH)) {
+ printk(KERN_DEBUG "%s: ignored spurious Michael MIC "
+ "error for a frame that cannot be encrypted "
+ "(fc=0x%04x) (src " MACSTR ")\n",
+ dev->name, rx->fc, MAC2STR(hdr->addr2));
+ goto ignore;
+ }
+
+ do {
+ union iwreq_data wrqu;
+ char *buf = kmalloc(128, GFP_ATOMIC);
+ if (buf == NULL)
+ break;
+
+ /* TODO: needed parameters: count, key type, TSC */
+ sprintf(buf, "MLME-MICHAELMICFAILURE.indication("
+ "keyid=%d %scast addr=" MACSTR ")",
+ keyidx, hdr->addr1[0] & 0x01 ? "broad" : "uni",
+ MAC2STR(hdr->addr2));
+ memset(&wrqu, 0, sizeof(wrqu));
+ wrqu.data.length = strlen(buf);
+ wireless_send_event(rx->dev, IWEVCUSTOM, &wrqu, buf);
+ kfree(buf);
+ } while (0);
+
+ /* TODO: consider verifying the MIC error report with software
+ * implementation if we get too many spurious reports from the
+ * hardware. */
+ ieee80211_rx_mgmt(rx->dev, rx->skb, rx->u.rx.status,
+ ieee80211_msg_michael_mic_failure);
+ return;
+
+ ignore:
+ dev_kfree_skb(rx->skb);
+ rx->skb = NULL;
+}
+
+
+static void ieee80211_sta_rx_broadcast(struct ieee80211_txrx_data *rx)
+{
+ struct ieee80211_local *local = rx->dev->priv;
+ u8 *_bssid, bssid[ETH_ALEN];
+ struct sk_buff *orig_skb = rx->skb, *skb;
+ struct ieee80211_hdr *hdr;
+ ieee80211_rx_handler *handler;
+ ieee80211_txrx_result res;
+ struct list_head *ptr;
+
+ hdr = (struct ieee80211_hdr *) orig_skb->data;
+ _bssid = ieee80211_get_bssid(hdr, orig_skb->len);
+ if (_bssid == NULL) {
+ dev_kfree_skb(orig_skb);
+ return;
+ }
+ memcpy(bssid, _bssid, ETH_ALEN);
+
+ list_for_each(ptr, &local->sub_if_list) {
+ struct ieee80211_sub_if_data *sdata =
+ list_entry(ptr, struct ieee80211_sub_if_data, list);
+ if (sdata->type != IEEE80211_SUB_IF_TYPE_STA ||
+ (memcmp(bssid, sdata->u.sta.bssid, ETH_ALEN) != 0 &&
+ !(bssid[0] & 0x01)))
+ continue;
+
+ skb = skb_copy(orig_skb, GFP_ATOMIC);
+ if (skb == NULL) {
+ if (net_ratelimit()) {
+ printk(KERN_DEBUG "%s: failed to copy "
+ "multicast frame for %s",
+ rx->dev->name, sdata->dev->name);
+ }
+ continue;
+ }
+
+ hdr = (struct ieee80211_hdr *) skb->data;
+ rx->skb = skb;
+ rx->dev = sdata->dev;
+ rx->sdata = IEEE80211_DEV_TO_SUB_IF(rx->dev);
+
+ res = TXRX_DROP;
+ for (handler = local->rx_handlers; *handler != NULL; handler++)
+ {
+ res = (*handler)(rx);
+ if (res == TXRX_DROP || res == TXRX_QUEUED)
+ break;
+ }
+
+ if (res == TXRX_DROP || *handler == NULL)
+ dev_kfree_skb(skb);
+ }
+
+ dev_kfree_skb(orig_skb);
+}
+
+
+/*
+ * This is the receive path handler. It is called by a low level driver when an
+ * 802.11 MPDU is received from the hardware.
+ */
+void ieee80211_rx(struct net_device *dev, struct sk_buff *skb,
+ struct ieee80211_rx_status *status)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct sta_info *sta;
+ struct ieee80211_hdr *hdr;
+ ieee80211_rx_handler *handler;
+ struct ieee80211_txrx_data rx;
+ ieee80211_txrx_result res = TXRX_DROP;
+ u16 type;
+ int sta_broadcast = 0;
+
+ hdr = (struct ieee80211_hdr *) skb->data;
+ memset(&rx, 0, sizeof(rx));
+ rx.skb = skb;
+ rx.local = local;
+ if (skb->len >= 16) {
+ sta = rx.sta = sta_info_get(local, hdr->addr2);
+ if (unlikely(sta == NULL &&
+ local->conf.mode == IW_MODE_ADHOC)) {
+ u8 *bssid = ieee80211_get_bssid(hdr, skb->len);
+ if (bssid &&
+ memcmp(bssid, local->bssid, ETH_ALEN) == 0)
+ sta = rx.sta =
+ ieee80211_ibss_add_sta(dev, skb, bssid,
+ hdr->addr2);
+ }
+ } else
+ sta = rx.sta = NULL;
+ if (sta && !sta->assoc_ap && !(sta->flags & WLAN_STA_WDS))
+ rx.dev = sta->dev;
+ else
+ rx.dev = ieee80211_get_rx_dev(local, hdr, skb->len,
+ &sta_broadcast);
+
+ rx.sdata = IEEE80211_DEV_TO_SUB_IF(rx.dev);
+ rx.u.rx.status = status;
+ rx.fc = skb->len >= 2 ? le16_to_cpu(hdr->frame_control) : 0;
+ type = WLAN_FC_GET_TYPE(rx.fc);
+ if (type == WLAN_FC_TYPE_DATA || type == WLAN_FC_TYPE_MGMT)
+ local->dot11ReceivedFragmentCount++;
+ if (sta_broadcast) {
+ ieee80211_sta_rx_broadcast(&rx);
+ goto end;
+ }
+
+ if ((status->flag & RX_FLAG_MMIC_ERROR)) {
+ ieee80211_rx_michael_mic_report(dev, hdr, sta, &rx);
+ goto end;
+ }
+
+ for (handler = local->rx_handlers; *handler != NULL; handler++) {
+ res = (*handler)(&rx);
+ if (res != TXRX_CONTINUE) {
+ if (res == TXRX_DROP) {
+ I802_DEBUG_INC(local->rx_handlers_drop);
+ if (sta)
+ sta->rx_dropped++;
+ }
+ if (res == TXRX_QUEUED)
+ I802_DEBUG_INC(local->rx_handlers_queued);
+ break;
+ }
+ }
+
+ if (res == TXRX_DROP || *handler == NULL)
+ dev_kfree_skb(skb);
+
+ end:
+ if (sta)
+ sta_info_release(local, sta);
+}
+
+
+static ieee80211_txrx_result
+ieee80211_tx_h_load_stats(struct ieee80211_txrx_data *tx)
+{
+ struct ieee80211_local *local = tx->local;
+ struct sk_buff *skb = tx->skb;
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ u32 load = 0, hdrtime;
+
+ /* TODO: this could be part of tx_status handling, so that the number
+ * of retries would be known; TX rate should in that case be stored
+ * somewhere with the packet */
+
+ /* Estimate total channel use caused by this frame */
+
+ /* 1 bit at 1 Mbit/s takes 1 usec; in channel_use values,
+ * 1 usec = 1/8 * (1080 / 10) = 13.5 */
+
+ if (local->conf.phymode == MODE_IEEE80211A ||
+ local->conf.phymode == MODE_ATHEROS_TURBO ||
+ local->conf.phymode == MODE_ATHEROS_TURBOG ||
+ (local->conf.phymode == MODE_IEEE80211G &&
+ tx->u.tx.rate->flags & IEEE80211_RATE_ERP))
+ hdrtime = CHAN_UTIL_HDR_SHORT;
+ else
+ hdrtime = CHAN_UTIL_HDR_LONG;
+
+ load = hdrtime;
+ if (!MULTICAST_ADDR(hdr->addr1))
+ load += hdrtime;
+
+ if (tx->u.tx.control->use_rts_cts)
+ load += 2 * hdrtime;
+ else if (tx->u.tx.control->use_cts_protect)
+ load += hdrtime;
+
+ load += skb->len * tx->u.tx.rate->rate_inv;
+
+ if (tx->u.tx.extra_frag) {
+ int i;
+ for (i = 0; i < tx->u.tx.num_extra_frag; i++) {
+ load += 2 * hdrtime;
+ load += tx->u.tx.extra_frag[i]->len *
+ tx->u.tx.rate->rate;
+ }
+ }
+
+ /* Divide channel_use by 8 to avoid wrapping around the counter */
+ load >>= CHAN_UTIL_SHIFT;
+ local->channel_use_raw += load;
+ if (tx->sta)
+ tx->sta->channel_use_raw += load;
+ tx->sdata->channel_use_raw += load;
+
+ return TXRX_CONTINUE;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_rx_h_load_stats(struct ieee80211_txrx_data *rx)
+{
+ struct ieee80211_local *local = rx->local;
+ struct sk_buff *skb = rx->skb;
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ u32 load = 0, hdrtime;
+ struct ieee80211_rate *rate;
+ int i;
+
+ /* Estimate total channel use caused by this frame */
+
+ if (unlikely(local->num_curr_rates < 0))
+ return TXRX_CONTINUE;
+
+ rate = &local->curr_rates[0];
+ for (i = 0; i < local->num_curr_rates; i++) {
+ if (local->curr_rates[i].val == rx->u.rx.status->rate) {
+ rate = &local->curr_rates[i];
+ break;
+ }
+ }
+
+ /* 1 bit at 1 Mbit/s takes 1 usec; in channel_use values,
+ * 1 usec = 1/8 * (1080 / 10) = 13.5 */
+
+ if (local->conf.phymode == MODE_IEEE80211A ||
+ local->conf.phymode == MODE_ATHEROS_TURBO ||
+ local->conf.phymode == MODE_ATHEROS_TURBOG ||
+ (local->conf.phymode == MODE_IEEE80211G &&
+ rate->flags & IEEE80211_RATE_ERP))
+ hdrtime = CHAN_UTIL_HDR_SHORT;
+ else
+ hdrtime = CHAN_UTIL_HDR_LONG;
+
+ load = hdrtime;
+ if (!MULTICAST_ADDR(hdr->addr1))
+ load += hdrtime;
+
+ load += skb->len * rate->rate_inv;
+
+ /* Divide channel_use by 8 to avoid wrapping around the counter */
+ load >>= CHAN_UTIL_SHIFT;
+ local->channel_use_raw += load;
+ if (rx->sta)
+ rx->sta->channel_use_raw += load;
+ rx->sdata->channel_use_raw += load;
+
+ return TXRX_CONTINUE;
+}
+
+
+static void ieee80211_stat_refresh(unsigned long data)
+{
+ struct ieee80211_local *local = (struct ieee80211_local *) data;
+ struct list_head *ptr, *n;
+
+ if (!local->stat_time)
+ return;
+
+ /* go through all stations */
+ spin_lock_bh(&local->sta_lock);
+ list_for_each(ptr, &local->sta_list) {
+ struct sta_info *sta =
+ list_entry(ptr, struct sta_info, list);
+ sta->channel_use = (sta->channel_use_raw / local->stat_time) /
+ CHAN_UTIL_PER_10MS;
+ sta->channel_use_raw = 0;
+ }
+ spin_unlock_bh(&local->sta_lock);
+
+ /* go through all subinterfaces */
+ list_for_each_safe(ptr, n, &local->sub_if_list) {
+ struct ieee80211_sub_if_data *sdata =
+ list_entry(ptr, struct ieee80211_sub_if_data, list);
+ sdata->channel_use = (sdata->channel_use_raw /
+ local->stat_time) / CHAN_UTIL_PER_10MS;
+ sdata->channel_use_raw = 0;
+
+ }
+
+ /* hardware interface */
+ local->channel_use = (local->channel_use_raw /
+ local->stat_time) / CHAN_UTIL_PER_10MS;
+ local->channel_use_raw = 0;
+
+ local->stat_timer.expires = jiffies + HZ * local->stat_time / 100;
+ add_timer(&local->stat_timer);
+}
+
+
+/* This is a version of the rx handler that can be called from hard irq
+ * context. Post the skb on the queue and schedule the tasklet */
+void ieee80211_rx_irqsafe(struct net_device *dev, struct sk_buff *skb,
+ struct ieee80211_rx_status *status)
+{
+ struct ieee80211_local *local = dev->priv;
+
+ skb->dev = dev;
+ memcpy(skb->cb, status, sizeof(struct ieee80211_rx_status));
+ skb->pkt_type = ieee80211_rx_msg;
+ skb_queue_tail(&local->skb_queue, skb);
+ tasklet_schedule(&local->tasklet);
+}
+
+
+void ieee80211_tx_status_irqsafe(struct net_device *dev, struct sk_buff *skb,
+ struct ieee80211_tx_status *status)
+{
+ struct ieee80211_local *local = dev->priv;
+ int tmp;
+
+ if (status->tx_filtered || status->excessive_retries) {
+ /* Need to save a copy of skb->cb somewhere. Storing it in the
+ * end of the data might not be the most efficient way of doing
+ * this (since it may require reallocation of packet data), but
+ * should be good enough for now since tx_filtered or
+ * excessive_retries should not be triggered that often. */
+ if (skb_is_nonlinear(skb)) {
+ if (skb_linearize(skb, GFP_ATOMIC)) {
+ printk(KERN_DEBUG "%s: Failed to linearize "
+ "skb\n", dev->name);
+ dev_kfree_skb_irq(skb);
+ return;
+ }
+ }
+ if (skb_tailroom(skb) < sizeof(skb->cb) &&
+ pskb_expand_head(skb, 0, sizeof(skb->cb), GFP_ATOMIC)) {
+ printk(KERN_DEBUG "%s: Failed to store skb->cb "
+ "in skb->data for TX filtered frame\n",
+ dev->name);
+ dev_kfree_skb_irq(skb);
+ return;
+ }
+ memcpy(skb_put(skb, sizeof(skb->cb)), skb->cb,
+ sizeof(skb->cb));
+ }
+
+ skb->dev = dev;
+ memcpy(skb->cb, status, sizeof(struct ieee80211_tx_status));
+ skb->pkt_type = ieee80211_tx_status_msg;
+ skb_queue_tail(status->req_tx_status ?
+ &local->skb_queue : &local->skb_queue_unreliable, skb);
+ tmp = skb_queue_len(&local->skb_queue) +
+ skb_queue_len(&local->skb_queue_unreliable);
+ while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT &&
+ (skb = skb_dequeue(&local->skb_queue_unreliable))) {
+ dev_kfree_skb_irq(skb);
+ tmp--;
+ I802_DEBUG_INC(local->tx_status_drop);
+ }
+ tasklet_schedule(&local->tasklet);
+}
+
+
+static void ieee80211_tasklet_handler(unsigned long data)
+{
+ struct ieee80211_local *local = (struct ieee80211_local *) data;
+ struct sk_buff *skb;
+ struct ieee80211_rx_status rx_status;
+ struct ieee80211_tx_status tx_status;
+
+ while ((skb = skb_dequeue(&local->skb_queue)) ||
+ (skb = skb_dequeue(&local->skb_queue_unreliable))) {
+ switch (skb->pkt_type) {
+ case ieee80211_rx_msg:
+ /* Make a copy of the RX status because the original
+ * skb may be freed during processing. Clear skb->type
+ * in order to not confuse kernel netstack. */
+ memcpy(&rx_status, skb->cb, sizeof(rx_status));
+ skb->pkt_type = 0;
+ ieee80211_rx(skb->dev, skb, &rx_status);
+ break;
+ case ieee80211_tx_status_msg:
+ /* Make a copy of the TX status because the original
+ * skb may be freed during processing. */
+ memcpy(&tx_status, skb->cb, sizeof(tx_status));
+ skb->pkt_type = 0;
+ if ((tx_status.tx_filtered ||
+ tx_status.excessive_retries) &&
+ skb->len >= sizeof(skb->cb)) {
+ /* Restore skb->cb from the copy that was made
+ * in ieee80211_tx_status_irqsafe() */
+ memcpy(skb->cb,
+ skb->data + skb->len - sizeof(skb->cb),
+ sizeof(skb->cb));
+ skb_trim(skb, skb->len - sizeof(skb->cb));
+ }
+ ieee80211_tx_status(skb->dev, skb, &tx_status);
+ break;
+ default: /* should never get here! */
+ printk(KERN_ERR "%s: Unknown message type (%d)\n",
+ local->wdev->name, skb->pkt_type);
+ dev_kfree_skb(skb);
+ break;
+ }
+ }
+}
+
+
+/* Remove added headers (e.g., QoS control), encryption header/MIC, etc. to
+ * make a prepared TX frame (one that has been given to hw) to look like brand
+ * new IEEE 802.11 frame that is ready to go through TX processing again. */
+static void ieee80211_remove_tx_extra(struct ieee80211_local *local,
+ struct ieee80211_key *key,
+ struct sk_buff *skb)
+{
+ int hdrlen, iv_len, mic_len;
+
+ if (key == NULL)
+ return;
+
+ hdrlen = ieee80211_get_hdrlen_from_skb(skb);
+
+ switch (key->alg) {
+ case ALG_WEP:
+ iv_len = WEP_IV_LEN;
+ mic_len = WEP_ICV_LEN;
+ break;
+ case ALG_TKIP:
+ iv_len = TKIP_IV_LEN;
+ mic_len = TKIP_ICV_LEN;
+ break;
+ case ALG_CCMP:
+ iv_len = CCMP_HDR_LEN;
+ mic_len = CCMP_MIC_LEN;
+ break;
+ default:
+ return;
+ }
+
+ if (skb->len >= mic_len && key->force_sw_encrypt)
+ skb_trim(skb, skb->len - mic_len);
+ if (skb->len >= iv_len && skb->len > hdrlen) {
+ memmove(skb->data + iv_len, skb->data, hdrlen);
+ skb_pull(skb, iv_len);
+ }
+
+ {
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ u16 fc = le16_to_cpu(hdr->frame_control);
+ if ((fc & 0x8C) == 0x88) /* QoS Control Field */ {
+ fc &= ~(WLAN_FC_STYPE_QOS_DATA << 4);
+ hdr->frame_control = cpu_to_le16(fc);
+ memmove(skb->data + 2, skb->data, hdrlen - 2);
+ skb_pull(skb, 2);
+ }
+ }
+}
+
+
+void ieee80211_tx_status(struct net_device *dev, struct sk_buff *skb,
+ struct ieee80211_tx_status *status)
+{
+ struct sk_buff *skb2;
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ struct ieee80211_local *local = dev->priv;
+ struct ieee80211_tx_packet_data *pkt_data =
+ (struct ieee80211_tx_packet_data *) skb->cb;
+ u16 frag, type;
+ u32 msg_type;
+
+ if (!status) {
+ printk(KERN_ERR
+ "%s: ieee80211_tx_status called with NULL status\n",
+ dev->name);
+ dev_kfree_skb(skb);
+ return;
+ }
+
+ if (status->excessive_retries) {
+ struct sta_info *sta;
+
+
+ sta = sta_info_get(local, hdr->addr1);
+ if (sta) {
+ if (sta->flags & WLAN_STA_PS) {
+ /* The STA is in power save mode, so assume
+ * that this TX packet failed because of that.
+ */
+ status->excessive_retries = 0;
+ status->tx_filtered = 1;
+ }
+ sta_info_release(local, sta);
+ }
+ }
+
+ if (status->tx_filtered) {
+ struct sta_info *sta;
+ sta = sta_info_get(local, hdr->addr1);
+ if (sta) {
+
+ sta->tx_filtered_count++;
+
+ /* Clear the TX filter mask for this STA when sending
+ * the next packet. If the STA went to power save mode,
+ * this will happen when it is waking up for the next
+ * time. */
+ sta->clear_dst_mask = 1;
+
+ /* TODO: Is the WLAN_STA_PS flag always set here or is
+ * the race between RX and TX status causing some
+ * packets to be filtered out before 80211.o gets an
+ * update for PS status? This seems to be the case, so
+ * no changes are likely to be needed. */
+ if (sta->flags & WLAN_STA_PS &&
+ skb_queue_len(&sta->tx_filtered) <
+ STA_MAX_TX_BUFFER) {
+ ieee80211_remove_tx_extra(local, sta->key,
+ skb);
+ skb_queue_tail(&sta->tx_filtered, skb);
+ } else if (!(sta->flags & WLAN_STA_PS) &&
+ !pkt_data->control.requeue) {
+ /* Software retry the packet once */
+ pkt_data->control.requeue = 1;
+ ieee80211_remove_tx_extra(local, sta->key,
+ skb);
+ dev_queue_xmit(skb);
+ } else {
+ if (net_ratelimit()) {
+ printk(KERN_DEBUG "%s: dropped TX "
+ "filtered frame queue_len=%d "
+ "PS=%d @%lu\n",
+ dev->name,
+ skb_queue_len(
+ &sta->tx_filtered),
+ !!(sta->flags & WLAN_STA_PS),
+ jiffies);
+ }
+ dev_kfree_skb(skb);
+ }
+ sta_info_release(local, sta);
+ return;
+ }
+ } else {
+ rate_control_tx_status(dev, skb, status);
+ }
+
+#ifdef IEEE80211_LEDS
+ if (local->tx_led_counter && (local->tx_led_counter-- == 1)) {
+ ieee80211_tx_led(0, dev);
+ }
+#endif /* IEEE80211_LEDS */
+ /* SNMP counters
+ * Fragments are passed to low-level drivers as separate skbs, so these
+ * are actually fragments, not frames. Update frame counters only for
+ * the first fragment of the frame. */
+
+ frag = WLAN_GET_SEQ_FRAG(le16_to_cpu(hdr->seq_ctrl));
+ type = WLAN_FC_GET_TYPE(le16_to_cpu(hdr->frame_control));
+
+ if (status->ack) {
+ if (frag == 0) {
+ local->dot11TransmittedFrameCount++;
+ if (MULTICAST_ADDR(hdr->addr1))
+ local->dot11MulticastTransmittedFrameCount++;
+ if (status->retry_count > 0)
+ local->dot11RetryCount++;
+ if (status->retry_count > 1)
+ local->dot11MultipleRetryCount++;
+ }
+
+ /* This counter shall be incremented for an acknowledged MPDU
+ * with an individual address in the address 1 field or an MPDU
+ * with a multicast address in the address 1 field of type Data
+ * or Management. */
+ if (!MULTICAST_ADDR(hdr->addr1) || type == WLAN_FC_TYPE_DATA ||
+ type == WLAN_FC_TYPE_MGMT)
+ local->dot11TransmittedFragmentCount++;
+ } else {
+ if (frag == 0)
+ local->dot11FailedCount++;
+ }
+
+ if (!status->req_tx_status) {
+ dev_kfree_skb(skb);
+ return;
+ }
+
+ msg_type = status->ack ? ieee80211_msg_tx_callback_ack :
+ ieee80211_msg_tx_callback_fail;
+
+ /* skb was the original skb used for TX. Clone it and give the clone
+ * to netif_rx(). Free original skb. */
+ skb2 = skb_copy(skb, GFP_ATOMIC);
+ if (!skb2) {
+ dev_kfree_skb(skb);
+ return;
+ }
+ dev_kfree_skb(skb);
+ skb = skb2;
+
+ /* Send frame to hostapd */
+ ieee80211_rx_mgmt(dev, skb, NULL, msg_type);
+}
+
+
+/* TODO: implement register/unregister functions for adding TX/RX handlers
+ * into ordered list */
+
+static ieee80211_rx_handler ieee80211_rx_handlers[] =
+{
+ ieee80211_rx_h_parse_qos,
+ ieee80211_rx_h_load_stats,
+ ieee80211_rx_h_monitor,
+ ieee80211_rx_h_passive_scan,
+ ieee80211_rx_h_check,
+ ieee80211_rx_h_sta_process,
+ ieee80211_rx_h_ccmp_decrypt,
+ ieee80211_rx_h_tkip_decrypt,
+ ieee80211_rx_h_wep_weak_iv_detection,
+ ieee80211_rx_h_wep_decrypt,
+ ieee80211_rx_h_defragment,
+ ieee80211_rx_h_ieee80211_rx_h_ps_poll,
+ ieee80211_rx_h_michael_mic_verify,
+ /* this must be after decryption - so header is counted in MPDU mic
+ * must be before pae and data, so QOS_DATA format frames
+ * are not passed to user space by these functions
+ */
+ ieee80211_rx_h_remove_qos_control,
+ ieee80211_rx_h_802_1x_pae,
+ ieee80211_rx_h_drop_unencrypted,
+ ieee80211_rx_h_data,
+ ieee80211_rx_h_mgmt,
+ NULL
+};
+
+static ieee80211_tx_handler ieee80211_tx_handlers[] =
+{
+ ieee80211_tx_h_rate_limit,
+ ieee80211_tx_h_check_assoc,
+ ieee80211_tx_h_ps_buf,
+ ieee80211_tx_h_select_key,
+ ieee80211_tx_h_michael_mic_add,
+ ieee80211_tx_h_fragment,
+ ieee80211_tx_h_tkip_encrypt,
+ ieee80211_tx_h_ccmp_encrypt,
+ ieee80211_tx_h_wep_encrypt,
+ ieee80211_tx_h_rate_ctrl,
+ ieee80211_tx_h_misc,
+ ieee80211_tx_h_load_stats,
+ NULL
+};
+
+
+static void ieee80211_if_sdata_init(struct ieee80211_sub_if_data *sdata)
+{
+ /* Default values for sub-interface parameters */
+ sdata->drop_unencrypted = 0;
+ sdata->eapol = 1;
+}
+
+
+static struct net_device *ieee80211_if_add(struct net_device *dev,
+ char *name, int locked)
+{
+ struct net_device *wds_dev = NULL, *tmp_dev;
+ struct ieee80211_local *local = dev->priv;
+ struct ieee80211_sub_if_data *sdata = NULL, *sdata_parent;
+ int alloc_size;
+ int ret;
+ int i;
+
+ /* ensure 32-bit alignment of our private data and hw private data */
+ alloc_size = sizeof(struct net_device) + 3 +
+ sizeof(struct ieee80211_sub_if_data) + 3;
+
+ wds_dev = (struct net_device *) kmalloc(alloc_size, GFP_KERNEL);
+ if (wds_dev == NULL)
+ return NULL;
+
+ memset(wds_dev, 0, alloc_size);
+ wds_dev->priv = local;
+ ether_setup(wds_dev);
+ if (strlen(name) == 0) {
+ i = 0;
+ do {
+ sprintf(wds_dev->name, "%s.%d", dev->name, i++);
+ tmp_dev = dev_get_by_name(wds_dev->name);
+ if (tmp_dev == NULL)
+ break;
+ dev_put(tmp_dev);
+ } while (i < 10000);
+ } else {
+ snprintf(wds_dev->name, IFNAMSIZ, "%s", name);
+ }
+
+ memcpy(wds_dev->dev_addr, dev->dev_addr, ETH_ALEN);
+ wds_dev->hard_start_xmit = ieee80211_subif_start_xmit;
+ wds_dev->do_ioctl = ieee80211_ioctl;
+ wds_dev->change_mtu = ieee80211_change_mtu;
+ wds_dev->tx_timeout = ieee80211_tx_timeout;
+ wds_dev->get_stats = ieee80211_get_stats;
+ wds_dev->open = ieee80211_open;
+ wds_dev->stop = ieee80211_stop;
+ wds_dev->base_addr = dev->base_addr;
+ wds_dev->irq = dev->irq;
+ wds_dev->mem_start = dev->mem_start;
+ wds_dev->mem_end = dev->mem_end;
+ wds_dev->tx_queue_len = 0;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(wds_dev);
+ sdata->type = IEEE80211_SUB_IF_TYPE_NORM;
+ sdata->master = local->mdev;
+ sdata->dev = wds_dev;
+ sdata->local = local;
+ memset(&sdata->stats, 0, sizeof(struct net_device_stats));
+ sdata_parent = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (sdata_parent->type == IEEE80211_SUB_IF_TYPE_NORM)
+ sdata->bss = &sdata_parent->u.norm;
+ else {
+ printk(KERN_DEBUG "%s: could not set BSS pointer for new "
+ "interface %s\n", dev->name, wds_dev->name);
+ }
+ ieee80211_if_sdata_init(sdata);
+
+ if (locked)
+ ret = register_netdevice(wds_dev);
+ else
+ ret = register_netdev(wds_dev);
+ if (ret) {
+ kfree(wds_dev);
+ return NULL;
+ }
+
+ list_add(&sdata->list, &local->sub_if_list);
+
+ strcpy(name, wds_dev->name);
+
+ return wds_dev;
+}
+
+
+int ieee80211_if_add_wds(struct net_device *dev, char *name,
+ struct ieee80211_if_wds *wds, int locked)
+{
+ struct net_device *wds_dev = NULL;
+ struct ieee80211_sub_if_data *sdata = NULL;
+
+ if (strlen(name) != 0) {
+ wds_dev = dev_get_by_name(name);
+ if (wds_dev) {
+ dev_put(wds_dev);
+ return -EEXIST;
+ }
+ }
+
+ wds_dev = ieee80211_if_add(dev, name, locked);
+ if (wds_dev == NULL)
+ return -ENOANO;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(wds_dev);
+ sdata->type = IEEE80211_SUB_IF_TYPE_WDS;
+ memcpy(&sdata->u.wds, wds, sizeof(struct ieee80211_if_wds));
+
+#ifdef CONFIG_IEEE80211_VERBOSE_DEBUG
+ printk(KERN_DEBUG
+ "%s: Added WDS Link to " MACSTR "\n",
+ wds_dev->name, MAC2STR(sdata->u.wds.remote_addr));
+#endif /* CONFIG_IEEE80211_VERBOSE_DEBUG */
+
+
+ ieee80211_proc_init_virtual(wds_dev);
+
+ return 0;
+}
+
+
+int ieee80211_if_update_wds(struct net_device *dev, char *name,
+ struct ieee80211_if_wds *wds, int locked)
+{
+ struct net_device *wds_dev = NULL;
+ struct ieee80211_local *local = dev->priv;
+ struct ieee80211_sub_if_data *sdata = NULL;
+ struct sta_info *sta;
+ struct list_head *ptr;
+
+ list_for_each(ptr, &local->sub_if_list) {
+ sdata = list_entry(ptr, struct ieee80211_sub_if_data, list);
+ if (strcmp(name, sdata->dev->name) == 0) {
+ wds_dev = sdata->dev;
+ break;
+ }
+ }
+
+ if (wds_dev == NULL || sdata->type != IEEE80211_SUB_IF_TYPE_WDS)
+ return -ENODEV;
+
+ /* Remove STA entry for the old peer */
+ sta = sta_info_get(local, sdata->u.wds.remote_addr);
+ if (sta) {
+ sta_info_release(local, sta);
+ sta_info_free(local, sta, 0);
+ } else {
+ printk(KERN_DEBUG "%s: could not find STA entry for WDS link "
+ "%s peer " MACSTR "\n",
+ dev->name, wds_dev->name,
+ MAC2STR(sdata->u.wds.remote_addr));
+ }
+
+ /* Update WDS link data */
+ memcpy(&sdata->u.wds, wds, sizeof(struct ieee80211_if_wds));
+
+
+ return 0;
+}
+
+
+static void ieee80211_if_init(struct net_device *dev)
+{
+ struct ieee80211_local *local = dev->priv;
+
+ spin_lock_init(&local->sub_if_lock);
+ INIT_LIST_HEAD(&local->sub_if_list);
+
+}
+
+
+int ieee80211_if_add_vlan(struct net_device *dev,
+ char *name,
+ struct ieee80211_if_vlan *vlan,
+ int locked)
+{
+ struct net_device *vlan_dev = NULL;
+ struct ieee80211_sub_if_data *sdata = NULL;
+
+ if (strlen(name) != 0) {
+ vlan_dev = dev_get_by_name(name);
+ if (vlan_dev) {
+ dev_put(vlan_dev);
+ return -EEXIST;
+ }
+ }
+
+ vlan_dev = ieee80211_if_add(dev, name, locked);
+ if (vlan_dev == NULL)
+ return -ENOANO;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(vlan_dev);
+ sdata->type = IEEE80211_SUB_IF_TYPE_VLAN;
+ ieee80211_proc_init_virtual(vlan_dev);
+ return 0;
+}
+
+
+static void ieee80211_if_norm_init(struct ieee80211_sub_if_data *sdata)
+{
+ sdata->type = IEEE80211_SUB_IF_TYPE_NORM;
+ sdata->u.norm.dtim_period = 2;
+ sdata->u.norm.force_unicast_rateidx = -1;
+ sdata->u.norm.max_ratectrl_rateidx = -1;
+ skb_queue_head_init(&sdata->u.norm.ps_bc_buf);
+ sdata->bss = &sdata->u.norm;
+}
+
+
+int ieee80211_if_add_norm(struct net_device *dev, char *name, u8 *bssid,
+ int locked)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct net_device *norm_dev = NULL;
+ struct ieee80211_sub_if_data *sdata = NULL;
+
+ if (local->bss_dev_count >= local->conf.bss_count)
+ return -ENOBUFS;
+
+ if (strlen(name) != 0) {
+ norm_dev = dev_get_by_name(name);
+ if (norm_dev) {
+ dev_put(norm_dev);
+ return -EEXIST;
+ }
+ }
+
+ norm_dev = ieee80211_if_add(dev, name, locked);
+ if (norm_dev == NULL)
+ return -ENOANO;
+
+ memcpy(norm_dev->dev_addr, bssid, ETH_ALEN);
+ sdata = IEEE80211_DEV_TO_SUB_IF(norm_dev);
+ ieee80211_if_norm_init(sdata);
+ ieee80211_proc_init_virtual(norm_dev);
+ spin_lock_bh(&local->sub_if_lock);
+ local->bss_devs[local->bss_dev_count] = norm_dev;
+ local->bss_dev_count++;
+ spin_unlock_bh(&local->sub_if_lock);
+
+ return 0;
+}
+
+
+static void ieee80211_addr_inc(u8 *addr)
+{
+ int pos = 5;
+ while (pos >= 0) {
+ addr[pos]++;
+ if (addr[pos] != 0)
+ break;
+ pos--;
+ }
+}
+
+
+int ieee80211_if_add_sta(struct net_device *dev, char *name, int locked)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct net_device *sta_dev;
+ struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_if_sta *ifsta;
+ int i;
+
+ if (local->sta_dev_count >= local->conf.bss_count)
+ return -ENOBUFS;
+
+ if (strlen(name) != 0) {
+ sta_dev = dev_get_by_name(name);
+ if (sta_dev) {
+ dev_put(sta_dev);
+ return -EEXIST;
+ }
+ }
+
+ sta_dev = ieee80211_if_add(dev, name, locked);
+ if (sta_dev == NULL)
+ return -ENOANO;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(sta_dev);
+ ifsta = &sdata->u.sta;
+ sdata->type = IEEE80211_SUB_IF_TYPE_STA;
+ ieee80211_proc_init_virtual(sta_dev);
+
+ spin_lock_bh(&local->sub_if_lock);
+ for (i = 0; i < local->conf.bss_count; i++) {
+ if (local->sta_devs[i] == NULL) {
+ local->sta_devs[i] = sta_dev;
+ local->sta_dev_count++;
+ printk(KERN_DEBUG "%s: using STA entry %d\n",
+ sta_dev->name, i);
+ while (i > 0) {
+ ieee80211_addr_inc(sta_dev->dev_addr);
+ i--;
+ }
+ printk(KERN_DEBUG "%s: MAC address " MACSTR "\n",
+ sta_dev->name, MAC2STR(sta_dev->dev_addr));
+ break;
+ }
+ }
+ spin_unlock_bh(&local->sub_if_lock);
+
+ init_timer(&ifsta->timer);
+ ifsta->timer.data = (unsigned long) sta_dev;
+ ifsta->timer.function = ieee80211_sta_timer;
+
+ ifsta->capab = WLAN_CAPABILITY_ESS;
+ ifsta->auth_algs = IEEE80211_AUTH_ALG_OPEN |
+ IEEE80211_AUTH_ALG_SHARED_KEY;
+ ifsta->create_ibss = 1;
+ ifsta->wmm_enabled = 1;
+
+ return 0;
+}
+
+
+static void ieee80211_if_del(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata, int locked)
+{
+ struct sta_info *sta;
+ u8 addr[ETH_ALEN];
+ int i, j;
+ struct list_head *ptr, *n;
+
+ memset(addr, 0xff, ETH_ALEN);
+ for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
+ if (!sdata->keys[i])
+ continue;
+#if 0
+ /* Low-level driver has probably disabled hw
+ * already, so there is not really much point
+ * in disabling the keys at this point. */
+ if (local->hw->set_key)
+ local->hw->set_key(dev, DISABLE_KEY, addr,
+ local->keys[i], 0);
+#endif
+ kfree(sdata->keys[i]);
+ }
+
+ switch (sdata->type) {
+ case IEEE80211_SUB_IF_TYPE_NORM:
+ /* Remove all virtual interfaces that use this BSS
+ * as their sdata->bss */
+ list_for_each_safe(ptr, n, &local->sub_if_list) {
+ struct ieee80211_sub_if_data *tsdata =
+ list_entry(ptr, struct ieee80211_sub_if_data,
+ list);
+
+ if (tsdata != sdata && tsdata->bss == &sdata->u.norm) {
+ printk(KERN_DEBUG "%s: removing virtual "
+ "interface %s because its BSS interface"
+ " is being removed\n",
+ sdata->dev->name, tsdata->dev->name);
+ ieee80211_if_del(local, tsdata, locked);
+ }
+ }
+
+ kfree(sdata->u.norm.beacon_head);
+ kfree(sdata->u.norm.beacon_tail);
+ spin_lock_bh(&local->sub_if_lock);
+ for (j = 0; j < local->bss_dev_count; j++) {
+ if (sdata->dev == local->bss_devs[j]) {
+ if (j + 1 < local->bss_dev_count) {
+ memcpy(&local->bss_devs[j],
+ &local->bss_devs[j + 1],
+ (local->bss_dev_count - j - 1) *
+ sizeof(local->bss_devs[0]));
+ local->bss_devs[local->bss_dev_count -
+ 1] = NULL;
+ } else
+ local->bss_devs[j] = NULL;
+ local->bss_dev_count--;
+ break;
+ }
+ }
+ spin_unlock_bh(&local->sub_if_lock);
+
+ if (sdata->dev != local->mdev) {
+ struct sk_buff *skb;
+ while ((skb = skb_dequeue(&sdata->u.norm.ps_bc_buf))) {
+ local->total_ps_buffered--;
+ dev_kfree_skb(skb);
+ }
+ }
+
+ break;
+ case IEEE80211_SUB_IF_TYPE_WDS:
+ sta = sta_info_get(local, sdata->u.wds.remote_addr);
+ if (sta) {
+ sta_info_release(local, sta);
+ sta_info_free(local, sta, 0);
+ } else {
+#ifdef CONFIG_IEEE80211_VERBOSE_DEBUG
+ printk(KERN_DEBUG "%s: Someone had deleted my STA "
+ "entry for the WDS link\n", sdata->dev->name);
+#endif /* CONFIG_IEEE80211_VERBOSE_DEBUG */
+ }
+ break;
+ case IEEE80211_SUB_IF_TYPE_STA:
+ del_timer_sync(&sdata->u.sta.timer);
+ if (local->scan_timer.data == (unsigned long) sdata->dev)
+ del_timer_sync(&local->scan_timer);
+ kfree(sdata->u.sta.extra_ie);
+ sdata->u.sta.extra_ie = NULL;
+ kfree(sdata->u.sta.assocreq_ies);
+ sdata->u.sta.assocreq_ies = NULL;
+ kfree(sdata->u.sta.assocresp_ies);
+ sdata->u.sta.assocresp_ies = NULL;
+ if (sdata->u.sta.probe_resp) {
+ dev_kfree_skb(sdata->u.sta.probe_resp);
+ sdata->u.sta.probe_resp = NULL;
+ }
+ for (i = 0; i < local->conf.bss_count; i++) {
+ if (local->sta_devs[i] == sdata->dev) {
+ local->sta_devs[i] = NULL;
+ local->sta_dev_count--;
+ break;
+ }
+ }
+
+ break;
+ }
+
+ /* remove all STAs that are bound to this virtual interface */
+ sta_info_flush(local, sdata->dev);
+
+ list_del(&sdata->list);
+ ieee80211_proc_deinit_virtual(sdata->dev);
+ if (locked)
+ unregister_netdevice(sdata->dev);
+ else
+ unregister_netdev(sdata->dev);
+ /* Default data device and management device are allocated with the
+ * master device. All other devices are separately allocated and will
+ * be freed here. */
+ if (sdata->dev != local->mdev && sdata->dev != local->wdev &&
+ sdata->dev != local->apdev)
+ kfree(sdata->dev);
+}
+
+
+static int ieee80211_if_remove(struct net_device *dev, char *name, int id,
+ int locked)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct list_head *ptr, *n;
+
+ /* Make sure not to touch sdata->master since it may
+ * have already been deleted, etc. */
+
+ list_for_each_safe(ptr, n, &local->sub_if_list) {
+ struct ieee80211_sub_if_data *sdata =
+ list_entry(ptr, struct ieee80211_sub_if_data, list);
+
+ if (sdata->type == id && strcmp(name, sdata->dev->name) == 0) {
+ ieee80211_if_del(local, sdata, locked);
+ break;
+ }
+ }
+
+ return 0;
+}
+
+
+int ieee80211_if_remove_wds(struct net_device *dev, char *name, int locked)
+{
+ return ieee80211_if_remove(dev, name, IEEE80211_SUB_IF_TYPE_WDS,
+ locked);
+}
+
+
+int ieee80211_if_remove_vlan(struct net_device *dev, char *name, int locked)
+{
+ return ieee80211_if_remove(dev, name, IEEE80211_SUB_IF_TYPE_VLAN,
+ locked);
+}
+
+
+int ieee80211_if_remove_norm(struct net_device *dev, char *name, int locked)
+{
+ return ieee80211_if_remove(dev, name, IEEE80211_SUB_IF_TYPE_NORM,
+ locked);
+}
+
+
+int ieee80211_if_remove_sta(struct net_device *dev, char *name, int locked)
+{
+ return ieee80211_if_remove(dev, name, IEEE80211_SUB_IF_TYPE_STA,
+ locked);
+}
+
+
+int ieee80211_if_flush(struct net_device *dev, int locked)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct list_head *ptr, *n;
+
+ list_for_each_safe(ptr, n, &local->sub_if_list) {
+ struct ieee80211_sub_if_data *sdata =
+ list_entry(ptr, struct ieee80211_sub_if_data, list);
+
+ if (sdata->dev != local->mdev &&
+ sdata->dev != local->wdev &&
+ sdata->dev != local->apdev)
+ ieee80211_if_del(local, sdata, locked);
+ }
+
+ return 0;
+}
+
+
+static void ieee80211_precalc_rates(struct ieee80211_hw *hw)
+{
+ struct ieee80211_hw_modes *mode;
+ struct ieee80211_rate *rate;
+ int m, r;
+
+ for (m = 0; m < hw->num_modes; m++) {
+ mode = &hw->modes[m];
+ for (r = 0; r < mode->num_rates; r++) {
+ rate = &mode->rates[r];
+ rate->rate_inv = CHAN_UTIL_RATE_LCM / rate->rate;
+ }
+ }
+}
+
+
+struct net_device *ieee80211_alloc_hw(size_t priv_data_len,
+ void (*setup)(struct net_device *))
+{
+ struct net_device *dev, *apdev, *mdev;
+ struct ieee80211_local *local;
+ struct ieee80211_sub_if_data *sdata;
+ int alloc_size;
+
+ /* Ensure 32-bit alignment of our private data and hw private data.
+ * Each net_device is followed by a sub_if_data which which is used
+ * for wds/vlan information; it is aligned as well.
+ *
+ * Sample memory map looks something like:
+ *
+ * 0000 *****************
+ * * net_dev *
+ * 015c *****************
+ * * sub_if *
+ * 017c *****************
+ * * local *
+ * 0b84 *****************
+ * * hw_priv *
+ * 1664 *****************
+ * * ap net_dev *
+ * 17c0 *****************
+ * * sub_if *
+ * *****************
+ * * master net_dev*
+ * *****************
+ * * sub_if *
+ * *****************
+ */
+ alloc_size = sizeof(struct net_device) +
+ sizeof(struct ieee80211_sub_if_data) + 3 +
+ sizeof(struct ieee80211_local) + 3 +
+ priv_data_len + 3 +
+ sizeof(struct net_device) + 3 +
+ sizeof(struct ieee80211_sub_if_data) + 3 +
+ sizeof(struct net_device) + 3 +
+ sizeof(struct ieee80211_sub_if_data) + 3 +
+ 4096;
+ mdev = (struct net_device *) kzalloc(alloc_size, GFP_KERNEL);
+ if (mdev == NULL)
+ return NULL;
+
+ mdev->priv = (struct net_device *)
+ (((long) mdev +
+ sizeof(struct net_device) +
+ sizeof(struct ieee80211_sub_if_data) + 3)
+ & ~3);
+ local = mdev->priv;
+ local->hw_priv = (void *)
+ (((long) local + sizeof(struct ieee80211_local) + 3) & ~3);
+ apdev = (struct net_device *)
+ (((long) local->hw_priv + priv_data_len + 3) & ~3);
+ dev = (struct net_device *)
+ (((long) apdev +
+ sizeof(struct net_device) +
+ sizeof(struct ieee80211_sub_if_data) + 3)
+ & ~3);
+ dev->priv = local;
+
+ ether_setup(dev);
+ memcpy(dev->name, "wlan%d", 7);
+
+ dev->hard_start_xmit = ieee80211_subif_start_xmit;
+ dev->do_ioctl = ieee80211_ioctl;
+ dev->change_mtu = ieee80211_change_mtu;
+ dev->tx_timeout = ieee80211_tx_timeout;
+ dev->get_stats = ieee80211_get_stats;
+ dev->open = ieee80211_open;
+ dev->stop = ieee80211_stop;
+ dev->tx_queue_len = 0;
+ dev->set_mac_address = ieee80211_set_mac_address;
+
+ local->wdev = dev;
+ local->mdev = mdev;
+ local->rx_handlers = ieee80211_rx_handlers;
+ local->tx_handlers = ieee80211_tx_handlers;
+
+ local->bridge_packets = 1;
+
+ local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
+ local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
+ local->short_retry_limit = 7;
+ local->long_retry_limit = 4;
+ local->conf.calib_int = 60;
+ local->rate_ctrl_num_up = RATE_CONTROL_NUM_UP;
+ local->rate_ctrl_num_down = RATE_CONTROL_NUM_DOWN;
+ local->conf.bss_count = 1;
+ memset(local->conf.bssid_mask, 0xff, ETH_ALEN);
+ local->bss_devs = kmalloc(sizeof(struct net_device *), GFP_KERNEL);
+ if (local->bss_devs == NULL)
+ goto fail;
+ local->bss_devs[0] = local->wdev;
+ local->bss_dev_count = 1;
+ local->sta_devs = kmalloc(sizeof(struct net_device *), GFP_KERNEL);
+ if (local->sta_devs == NULL)
+ goto fail;
+ local->sta_devs[0] = NULL;
+
+ local->scan.in_scan = 0;
+ local->hw_modes = (unsigned int) -1;
+
+ init_timer(&local->scan.timer); /* clear it out */
+
+ spin_lock_init(&local->generic_lock);
+ init_timer(&local->rate_limit_timer);
+ local->rate_limit_timer.function = ieee80211_rate_limit;
+ local->rate_limit_timer.data = (unsigned long) local;
+ init_timer(&local->stat_timer);
+ local->stat_timer.function = ieee80211_stat_refresh;
+ local->stat_timer.data = (unsigned long) local;
+ ieee80211_rx_bss_list_init(dev);
+
+ sta_info_init(local);
+
+ ieee80211_if_init(dev);
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ sdata->dev = dev;
+ sdata->master = mdev;
+ sdata->local = local;
+ ieee80211_if_sdata_init(sdata);
+ ieee80211_if_norm_init(sdata);
+ list_add_tail(&sdata->list, &local->sub_if_list);
+
+ if (strlen(dev->name) + 2 >= sizeof(dev->name))
+ goto fail;
+
+ apdev = (struct net_device *)
+ (((long) local->hw_priv + priv_data_len + 3) & ~3);
+ local->apdev = apdev;
+ ether_setup(apdev);
+ apdev->priv = local;
+ apdev->hard_start_xmit = ieee80211_mgmt_start_xmit;
+ apdev->change_mtu = ieee80211_change_mtu_apdev;
+ apdev->get_stats = ieee80211_get_stats;
+ apdev->open = ieee80211_open;
+ apdev->stop = ieee80211_stop;
+ apdev->type = ARPHRD_IEEE80211_PRISM;
+ apdev->hard_header_parse = header_parse_80211;
+ apdev->tx_queue_len = 0;
+ sprintf(apdev->name, "%sap", dev->name);
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(apdev);
+ sdata->type = IEEE80211_SUB_IF_TYPE_MGMT;
+ sdata->dev = apdev;
+ sdata->master = mdev;
+ sdata->local = local;
+ list_add_tail(&sdata->list, &local->sub_if_list);
+
+ ether_setup(mdev);
+ mdev->hard_start_xmit = ieee80211_master_start_xmit;
+ mdev->do_ioctl = ieee80211_ioctl;
+ mdev->change_mtu = ieee80211_change_mtu;
+ mdev->tx_timeout = ieee80211_tx_timeout;
+ mdev->get_stats = ieee80211_get_stats;
+ mdev->open = ieee80211_open;
+ mdev->stop = ieee80211_stop;
+ mdev->type = ARPHRD_IEEE80211;
+ mdev->hard_header_parse = header_parse_80211;
+ sprintf(mdev->name, "%s.11", dev->name);
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(mdev);
+ sdata->type = IEEE80211_SUB_IF_TYPE_NORM;
+ sdata->dev = mdev;
+ sdata->master = mdev;
+ sdata->local = local;
+ list_add_tail(&sdata->list, &local->sub_if_list);
+
+ tasklet_init(&local->tasklet,
+ ieee80211_tasklet_handler,
+ (unsigned long) local);
+ skb_queue_head_init(&local->skb_queue);
+ skb_queue_head_init(&local->skb_queue_unreliable);
+
+ if (setup)
+ setup(mdev);
+
+ return mdev;
+
+ fail:
+ ieee80211_free_hw(mdev);
+ return NULL;
+}
+
+int ieee80211_register_hw(struct net_device *dev, struct ieee80211_hw *hw)
+{
+ struct ieee80211_local *local = dev->priv;
+ int result;
+
+ if (!hw)
+ return -1;
+
+ if (hw->version != IEEE80211_VERSION) {
+ printk("ieee80211_register_hw - version mismatch: 80211.o "
+ "version %d, low-level driver version %d\n",
+ IEEE80211_VERSION, hw->version);
+ return -1;
+ }
+
+ local->conf.mode = IW_MODE_MASTER;
+ local->conf.beacon_int = 1000;
+
+ ieee80211_update_hw(dev, hw); /* Don't care about the result. */
+
+ sta_info_start(local);
+
+ result = register_netdev(local->wdev);
+ if (result < 0)
+ return -1;
+
+ result = register_netdev(local->apdev);
+ if (result < 0)
+ goto fail_2nd_dev;
+
+ if (hw->fraglist)
+ dev->features |= NETIF_F_FRAGLIST;
+ result = register_netdev(dev);
+ if (result < 0)
+ goto fail_3rd_dev;
+
+ if (rate_control_initialize(local) < 0) {
+ printk(KERN_DEBUG "%s: Failed to initialize rate control "
+ "algorithm\n", dev->name);
+ goto fail_rate;
+ }
+
+ /* TODO: add rtnl locking around device creation and qdisc install */
+ ieee80211_install_qdisc(dev);
+
+ ieee80211_wep_init(local);
+ ieee80211_proc_init_interface(local);
+ return 0;
+
+fail_rate:
+ unregister_netdev(dev);
+fail_3rd_dev:
+ unregister_netdev(local->apdev);
+fail_2nd_dev:
+ unregister_netdev(local->wdev);
+ sta_info_stop(local);
+ return result;
+}
+
+int ieee80211_update_hw(struct net_device *dev, struct ieee80211_hw *hw)
+{
+ struct ieee80211_local *local = dev->priv;
+
+ local->hw = hw;
+
+ /* Backwards compatibility for low-level drivers that do not set number
+ * of TX queues. */
+ if (hw->queues == 0)
+ hw->queues = 1;
+
+ memcpy(local->apdev->dev_addr, dev->dev_addr, ETH_ALEN);
+ local->apdev->base_addr = dev->base_addr;
+ local->apdev->irq = dev->irq;
+ local->apdev->mem_start = dev->mem_start;
+ local->apdev->mem_end = dev->mem_end;
+
+ memcpy(local->wdev->dev_addr, dev->dev_addr, ETH_ALEN);
+ local->wdev->base_addr = dev->base_addr;
+ local->wdev->irq = dev->irq;
+ local->wdev->mem_start = dev->mem_start;
+ local->wdev->mem_end = dev->mem_end;
+
+ if (!hw->modes || !hw->modes->channels || !hw->modes->rates ||
+ !hw->modes->num_channels || !hw->modes->num_rates)
+ return -1;
+
+ ieee80211_precalc_rates(hw);
+ local->conf.phymode = hw->modes[0].mode;
+ local->curr_rates = hw->modes[0].rates;
+ local->num_curr_rates = hw->modes[0].num_rates;
+ ieee80211_prepare_rates(dev);
+
+ local->conf.freq = local->hw->modes[0].channels[0].freq;
+ local->conf.channel = local->hw->modes[0].channels[0].chan;
+ local->conf.channel_val = local->hw->modes[0].channels[0].val;
+ /* FIXME: Invoke config to allow driver to set the channel. */
+
+ return 0;
+}
+
+void ieee80211_unregister_hw(struct net_device *dev)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct list_head *ptr, *n;
+ int i;
+
+ tasklet_disable(&local->tasklet);
+ /* TODO: skb_queue should be empty here, no need to do anything? */
+
+ if (local->rate_limit)
+ del_timer_sync(&local->rate_limit_timer);
+ if (local->stat_time)
+ del_timer_sync(&local->stat_timer);
+ if (local->scan_timer.data)
+ del_timer_sync(&local->scan_timer);
+ ieee80211_rx_bss_list_deinit(dev);
+
+ list_for_each_safe(ptr, n, &local->sub_if_list) {
+ struct ieee80211_sub_if_data *sdata =
+ list_entry(ptr, struct ieee80211_sub_if_data, list);
+ ieee80211_if_del(local, sdata, 0);
+ }
+
+ sta_info_stop(local);
+
+ for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++)
+ if (local->fragments[i].skb)
+ dev_kfree_skb(local->fragments[i].skb);
+
+ for (i = 0; i < NUM_IEEE80211_MODES; i++) {
+ kfree(local->supp_rates[i]);
+ kfree(local->basic_rates[i]);
+ }
+
+ kfree(local->conf.ssid);
+ kfree(local->conf.generic_elem);
+
+ ieee80211_proc_deinit_interface(local);
+
+ skb_queue_purge(&local->skb_queue);
+ skb_queue_purge(&local->skb_queue_unreliable);
+
+ rate_control_free(local);
+}
+
+void ieee80211_free_hw(struct net_device *dev)
+{
+ struct ieee80211_local *local = dev->priv;
+
+ kfree(local->sta_devs);
+ kfree(local->bss_devs);
+ kfree(dev);
+}
+
+/* Perform netif operations on all configured interfaces */
+int ieee80211_netif_oper(struct net_device *sdev, Netif_Oper op)
+{
+ struct ieee80211_local *local = sdev->priv;
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(sdev);
+ struct net_device *dev = sdata->master;
+
+ switch (op) {
+ case NETIF_ATTACH:
+ netif_device_attach(dev);
+ break;
+ case NETIF_DETACH:
+ netif_device_detach(dev);
+ break;
+ case NETIF_START:
+ netif_start_queue(dev);
+ break;
+ case NETIF_STOP:
+ break;
+ case NETIF_WAKE:
+ if (local->scan.in_scan == 0) {
+ netif_wake_queue(dev);
+#if 1
+ if (/* FIX: 802.11 qdisc in use */ 1)
+ __netif_schedule(dev);
+#endif
+ }
+ break;
+ case NETIF_IS_STOPPED:
+ if (netif_queue_stopped(dev))
+ return 1;
+ break;
+ case NETIF_UPDATE_TX_START:
+ dev->trans_start = jiffies;
+ break;
+ }
+
+ return 0;
+}
+
+
+void * ieee80211_dev_hw_data(struct net_device *dev)
+{
+ struct ieee80211_local *local = dev->priv;
+ return local->hw_priv;
+}
+
+
+void * ieee80211_dev_stats(struct net_device *dev)
+{
+ struct ieee80211_sub_if_data *sdata;
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ return &(sdata->stats);
+}
+
+
+int ieee80211_rate_control_register(struct rate_control_ops *ops)
+{
+ struct rate_control_algs *alg;
+
+ alg = kmalloc(sizeof(*alg), GFP_KERNEL);
+ if (alg == NULL) {
+ return -1;
+ }
+ memset(alg, 0, sizeof(*alg));
+ alg->next = ieee80211_rate_ctrl_algs;
+ alg->ops = ops;
+ ieee80211_rate_ctrl_algs = alg;
+
+ return 0;
+}
+
+
+void ieee80211_rate_control_unregister(struct rate_control_ops *ops)
+{
+ struct rate_control_algs *alg, *prev;
+
+ prev = NULL;
+ alg = ieee80211_rate_ctrl_algs;
+ while (alg) {
+ if (alg->ops == ops) {
+ if (prev)
+ prev->next = alg->next;
+ else
+ ieee80211_rate_ctrl_algs = alg->next;
+ kfree(alg);
+ break;
+ }
+ prev = alg;
+ alg = alg->next;
+ }
+}
+
+
+static int rate_control_initialize(struct ieee80211_local *local)
+{
+ struct rate_control_algs *algs;
+ for (algs = ieee80211_rate_ctrl_algs; algs; algs = algs->next) {
+ local->rate_ctrl = algs->ops;
+ local->rate_ctrl_priv = rate_control_alloc(local);
+ if (local->rate_ctrl_priv) {
+ printk(KERN_DEBUG "%s: Selected rate control "
+ "algorithm '%s'\n", local->wdev->name,
+ local->rate_ctrl->name);
+ return 0;
+ }
+ }
+
+ printk(KERN_WARNING "%s: Failed to select rate control algorithm\n",
+ local->wdev->name);
+ return -1;
+}
+
+
+static int __init ieee80211_init(void)
+{
+ struct sk_buff *skb;
+ if (sizeof(struct ieee80211_tx_packet_data) > (sizeof(skb->cb))) {
+ printk("80211: ieee80211_tx_packet_data is bigger "
+ "than the skb->cb (%d > %d)\n",
+ (int) sizeof(struct ieee80211_tx_packet_data),
+ (int) sizeof(skb->cb));
+ return -EINVAL;
+ }
+ if (sizeof(struct ieee80211_rx_status) > sizeof(skb->cb)) {
+ printk("80211: ieee80211_rx_status is bigger "
+ "than the skb->cb (%d > %d)\n",
+ (int) sizeof(struct ieee80211_rx_status),
+ (int) sizeof(skb->cb));
+ return -EINVAL;
+ }
+
+ ieee80211_proc_init();
+ {
+ int ret = ieee80211_wme_register();
+ if (ret) {
+ printk(KERN_DEBUG "ieee80211_init: failed to "
+ "initialize WME (err=%d)\n", ret);
+ ieee80211_proc_deinit();
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+
+static void __exit ieee80211_exit(void)
+{
+ ieee80211_wme_unregister();
+ ieee80211_proc_deinit();
+}
+
+
+EXPORT_SYMBOL(ieee80211_alloc_hw);
+EXPORT_SYMBOL(ieee80211_register_hw);
+EXPORT_SYMBOL(ieee80211_update_hw);
+EXPORT_SYMBOL(ieee80211_unregister_hw);
+EXPORT_SYMBOL(ieee80211_free_hw);
+EXPORT_SYMBOL(ieee80211_rx);
+EXPORT_SYMBOL(ieee80211_tx_status);
+EXPORT_SYMBOL(ieee80211_beacon_get);
+EXPORT_SYMBOL(ieee80211_get_buffered_bc);
+EXPORT_SYMBOL(ieee80211_netif_oper);
+EXPORT_SYMBOL(ieee80211_dev_hw_data);
+EXPORT_SYMBOL(ieee80211_dev_stats);
+EXPORT_SYMBOL(ieee80211_get_hw_conf);
+EXPORT_SYMBOL(ieee80211_set_aid_for_sta);
+EXPORT_SYMBOL(ieee80211_rx_irqsafe);
+EXPORT_SYMBOL(ieee80211_tx_status_irqsafe);
+EXPORT_SYMBOL(ieee80211_get_hdrlen);
+EXPORT_SYMBOL(ieee80211_get_hdrlen_from_skb);
+EXPORT_SYMBOL(ieee80211_rate_control_register);
+EXPORT_SYMBOL(ieee80211_rate_control_unregister);
+EXPORT_SYMBOL(sta_info_get);
+EXPORT_SYMBOL(sta_info_release);
+EXPORT_SYMBOL(ieee80211_radar_status);
+
+module_init(ieee80211_init);
+module_exit(ieee80211_exit);
--- /dev/null
+/*
+ * Copyright 2002-2005, Instant802 Networks, Inc.
+ * Copyright 2005, Devicescape Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef IEEE80211_I_H
+#define IEEE80211_I_H
+
+/* ieee80211.o internal definitions, etc. These are not included into
+ * low-level drivers. */
+
+#ifndef ETH_P_PAE
+#define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
+#endif /* ETH_P_PAE */
+
+#define IEEE80211_MAX_SSID_LEN 32
+
+struct ieee80211_local;
+
+#include "ieee80211_key.h"
+#include "sta_info.h"
+
+#define BIT(x) (1 << (x))
+
+#define IEEE80211_ALIGN32_PAD(a) ((4 - ((a) & 3)) & 3)
+
+
+/* Maximum number of broadcast/multicast frames to buffer when some of the
+ * associated stations are using power saving. */
+#define AP_MAX_BC_BUFFER 128
+
+/* Maximum number of frames buffered to all STAs, including multicast frames.
+ * Note: increasing this limit increases the potential memory requirement. Each
+ * frame can be up to about 2 kB long. */
+#define TOTAL_MAX_TX_BUFFER 512
+
+
+#define MAC2STR(a) ((a)[0] & 0xff), ((a)[1] & 0xff), ((a)[2] & 0xff), \
+ ((a)[3] & 0xff), ((a)[4] & 0xff), ((a)[5] & 0xff)
+#define MACSTR "%02x:%02x:%02x:%02x:%02x:%02x"
+
+#define MULTICAST_ADDR(a) ((a)[0] & 0x01)
+
+
+/* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
+ * reception of at least three fragmented frames. This limit can be increased
+ * by changing this define, at the cost of slower frame reassembly and
+ * increased memory use (about 2 kB of RAM per entry). */
+#define IEEE80211_FRAGMENT_MAX 4
+
+struct ieee80211_fragment_entry {
+ unsigned long first_frag_time;
+ unsigned int seq;
+ unsigned int rx_queue;
+ unsigned int last_frag;
+ struct sk_buff *skb;
+ int ccmp; /* Whether fragments were encrypted with CCMP */
+ u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
+};
+
+
+struct ieee80211_sta_bss {
+ struct list_head list;
+ struct ieee80211_sta_bss *hnext;
+ atomic_t users;
+
+ u8 bssid[ETH_ALEN];
+ u8 ssid[IEEE80211_MAX_SSID_LEN];
+ size_t ssid_len;
+ u16 capability; /* host byte order */
+ int hw_mode;
+ int channel;
+ int freq;
+ int rssi;
+ u8 *wpa_ie;
+ size_t wpa_ie_len;
+ u8 *rsn_ie;
+ size_t rsn_ie_len;
+ u8 *wmm_ie;
+ size_t wmm_ie_len;
+#define IEEE80211_MAX_SUPP_RATES 32
+ u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
+ size_t supp_rates_len;
+ int beacon_int;
+ u64 timestamp;
+
+ int probe_resp;
+ unsigned long last_update;
+
+};
+
+
+typedef enum {
+ TXRX_CONTINUE, TXRX_DROP, TXRX_QUEUED
+} ieee80211_txrx_result;
+
+struct ieee80211_txrx_data {
+ struct sk_buff *skb;
+ struct net_device *dev;
+ struct ieee80211_local *local;
+ struct ieee80211_sub_if_data *sdata;
+ struct sta_info *sta;
+ u16 fc, ethertype;
+ struct ieee80211_key *key;
+ unsigned int fragmented:1; /* whether the MSDU was fragmented */
+ union {
+ struct {
+ struct ieee80211_tx_control *control;
+ int unicast:1;
+ int ps_buffered:1;
+ int short_preamble:1;
+ int probe_last_frag:1;
+ struct ieee80211_rate *rate;
+ /* use this rate (if set) for last fragment; rate can
+ * be set to lower rate for the first fragments, e.g.,
+ * when using CTS protection with IEEE 802.11g. */
+ struct ieee80211_rate *last_frag_rate;
+ int last_frag_rateidx;
+ int mgmt_interface;
+
+ /* Extra fragments (in addition to the first fragment
+ * in skb) */
+ int num_extra_frag;
+ struct sk_buff **extra_frag;
+ } tx;
+ struct {
+ struct ieee80211_rx_status *status;
+ int sent_ps_buffered;
+ int queue;
+ } rx;
+ } u;
+#ifdef CONFIG_HOSTAPD_WPA_TESTING
+ int wpa_test;
+#endif /* CONFIG_HOSTAPD_WPA_TESTING */
+};
+
+struct ieee80211_passive_scan {
+ unsigned int in_scan:1; /* this must be cleared before calling
+ * netif_oper(WAKEUP) */
+ unsigned int our_mode_only:1; /* only scan our physical mode a/b/g/etc
+ */
+ int interval; /* time in seconds between scans */
+ int time; /* time in microseconds to scan for */
+ int channel; /* channel to be scanned */
+ int tries;
+
+ int mode_idx;
+ int chan_idx;
+
+ int freq;
+ int rx_packets;
+ int rx_beacon;
+ int txrx_count;
+
+ struct timer_list timer;
+
+ struct sk_buff *skb; /* skb to transmit before changing channels,
+ * maybe null for none */
+ struct ieee80211_tx_control tx_control;
+
+ unsigned int num_scans;
+};
+
+typedef ieee80211_txrx_result (*ieee80211_tx_handler)
+(struct ieee80211_txrx_data *tx);
+
+typedef ieee80211_txrx_result (*ieee80211_rx_handler)
+(struct ieee80211_txrx_data *rx);
+
+struct ieee80211_if_norm {
+ u8 *beacon_head, *beacon_tail;
+ int beacon_head_len, beacon_tail_len;
+
+ /* TODO: sta_aid could be replaced by 2008-bit large bitfield of
+ * that could be used in TIM element generation. This would also
+ * make TIM element generation a bit faster. */
+ /* AID mapping to station data. NULL, if AID is free. AID is in the
+ * range 1..2007 and sta_aid[i] corresponds to AID i+1. */
+ struct sta_info *sta_aid[MAX_AID_TABLE_SIZE];
+ int max_aid; /* largest aid currently in use */
+ atomic_t num_sta_ps; /* number of stations in PS mode */
+ struct sk_buff_head ps_bc_buf;
+ int dtim_period, dtim_count;
+ int force_unicast_rateidx; /* forced TX rateidx for unicast frames */
+ int max_ratectrl_rateidx; /* max TX rateidx for rate control */
+ int num_beacons; /* number of TXed beacon frames for this BSS */
+};
+
+struct ieee80211_if_wds {
+ u8 remote_addr[ETH_ALEN];
+ struct sta_info *sta;
+};
+
+struct ieee80211_if_vlan {
+ u8 id;
+};
+
+struct ieee80211_if_sta {
+ enum {
+ IEEE80211_DISABLED, IEEE80211_AUTHENTICATE,
+ IEEE80211_ASSOCIATE, IEEE80211_ASSOCIATED,
+ IEEE80211_IBSS_SEARCH, IEEE80211_IBSS_JOINED
+ } state;
+ struct timer_list timer;
+ u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
+ u8 ssid[IEEE80211_MAX_SSID_LEN];
+ size_t ssid_len;
+ u16 aid;
+ u16 ap_capab, capab;
+ u8 *extra_ie; /* to be added to the end of AssocReq */
+ size_t extra_ie_len;
+
+ /* The last AssocReq/Resp IEs */
+ u8 *assocreq_ies, *assocresp_ies;
+ size_t assocreq_ies_len, assocresp_ies_len;
+
+ int auth_tries, assoc_tries;
+
+ int ssid_set:1;
+ int bssid_set:1;
+ int prev_bssid_set:1;
+ int authenticated:1;
+ int associated:1;
+ int probereq_poll:1;
+ int use_protection:1;
+ int create_ibss:1;
+ int mixed_cell:1;
+ int wmm_enabled:1;
+
+ int key_mgmt;
+ unsigned long last_probe;
+
+#define IEEE80211_AUTH_ALG_OPEN BIT(0)
+#define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1)
+#define IEEE80211_AUTH_ALG_LEAP BIT(2)
+ unsigned int auth_algs; /* bitfield of allowed auth algs */
+ int auth_alg; /* currently used IEEE 802.11 authentication algorithm */
+ int auth_transaction;
+
+ unsigned long ibss_join_req;
+ struct sk_buff *probe_resp; /* ProbeResp template for IBSS */
+ u32 supp_rates_bits;
+
+ int wmm_last_param_set;
+};
+
+
+#define IEEE80211_SUB_IF_TYPE_NORM 0x00000000
+#define IEEE80211_SUB_IF_TYPE_MGMT 0x00000001
+#define IEEE80211_SUB_IF_TYPE_STA 0x00000002
+#define IEEE80211_SUB_IF_TYPE_WDS 0x5A580211
+#define IEEE80211_SUB_IF_TYPE_VLAN 0x00080211
+
+struct ieee80211_sub_if_data {
+ struct list_head list;
+ unsigned int type;
+
+ struct net_device *dev;
+ struct net_device *master;
+ struct ieee80211_local *local;
+
+ struct net_device_stats stats;
+ int drop_unencrypted;
+ int eapol; /* 0 = process EAPOL frames as normal data frames,
+ * 1 = send EAPOL frames through wlan#ap to hostapd
+ * (default) */
+ int ieee802_1x; /* IEEE 802.1X PAE - drop packet to/from unauthorized
+ * port */
+
+#define NUM_DEFAULT_KEYS 4
+ struct ieee80211_key *keys[NUM_DEFAULT_KEYS];
+ struct ieee80211_key *default_key;
+
+ struct ieee80211_if_norm *bss; /* BSS that this device belongs to */
+
+ union {
+ struct ieee80211_if_norm norm;
+ struct ieee80211_if_wds wds;
+ struct ieee80211_if_vlan vlan;
+ struct ieee80211_if_sta sta;
+ } u;
+ int channel_use;
+ int channel_use_raw;
+};
+
+#define IEEE80211_DEV_TO_SUB_IF(dev) ((struct ieee80211_sub_if_data *) \
+ (((long)dev + sizeof(struct net_device) + 3) & ~3))
+
+
+struct ieee80211_local {
+ struct ieee80211_hw *hw;
+ void *hw_priv;
+ struct net_device *mdev; /* wlan#.11 - "master" 802.11 device */
+ struct net_device *wdev; /* wlan# - default Ethernet (data) devide */
+ struct net_device *apdev; /* wlan#ap - management frames (hostapd) */
+ int open_count;
+ struct ieee80211_conf conf;
+
+ /* Tasklet and skb queue to process calls from IRQ mode. All frames
+ * added to skb_queue will be processed, but frames in
+ * skb_queue_unreliable may be dropped if the total length of these
+ * queues increases over the limit. */
+#define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
+ struct tasklet_struct tasklet;
+ struct sk_buff_head skb_queue;
+ struct sk_buff_head skb_queue_unreliable;
+ enum {
+ ieee80211_rx_msg = 1,
+ ieee80211_tx_status_msg = 2
+ } ieee80211_msg_enum;
+
+ spinlock_t generic_lock;
+ /* Station data structures */
+ spinlock_t sta_lock; /* mutex for STA data structures */
+ int num_sta; /* number of stations in sta_list */
+ struct list_head sta_list;
+ struct sta_info *sta_hash[STA_HASH_SIZE];
+ struct timer_list sta_cleanup;
+
+ /* Current rate table. This is a pointer to hw->modes structure. */
+ struct ieee80211_rate *curr_rates;
+ int num_curr_rates;
+
+ void *rate_ctrl_priv;
+ struct rate_control_ops *rate_ctrl;
+
+ int next_mode; /* MODE_IEEE80211*
+ * The mode preference for next channel change. This is
+ * used to select .11g vs. .11b channels (or 4.9 GHz vs.
+ * .11a) when the channel number is not unique. */
+
+ /* Supported and basic rate filters for different modes. These are
+ * pointers to -1 terminated lists and rates in 100 kbps units. */
+ int *supp_rates[NUM_IEEE80211_MODES];
+ int *basic_rates[NUM_IEEE80211_MODES];
+
+ int rts_threshold;
+ int cts_protect_erp_frames;
+ int fragmentation_threshold;
+ int short_retry_limit; /* dot11ShortRetryLimit */
+ int long_retry_limit; /* dot11LongRetryLimit */
+ int short_preamble; /* use short preamble with IEEE 802.11b */
+
+ u32 wep_iv;
+ int key_tx_rx_threshold; /* number of times any key can be used in TX
+ * or RX before generating a rekey
+ * notification; 0 = notification disabled. */
+
+ /* Fragment table for host-based reassembly */
+ struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
+ unsigned int fragment_next;
+
+ int bridge_packets; /* bridge packets between associated stations and
+ * deliver multicast frames both back to wireless
+ * media and to the local net stack */
+
+ struct ieee80211_passive_scan scan;
+
+
+ ieee80211_rx_handler *rx_handlers;
+ ieee80211_tx_handler *tx_handlers;
+
+ spinlock_t sub_if_lock; /* mutex for STA data structures */
+ struct list_head sub_if_list;
+ struct net_device **bss_devs; /* pointer to IF_TYPE_NORM devices for
+ * quick access to BSS data */
+ int bss_dev_count; /* number of used entries in bss_devs; note: the
+ * total size of bss_devs array is stored in
+ * conf.bss_count */
+ struct net_device **sta_devs; /* pointer to IF_TYPE_STA devices */
+ int sta_dev_count; /* number of used entries in sta_devs */
+ int sta_scanning;
+ int scan_hw_mode_idx;
+ int scan_channel_idx;
+ enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state;
+ unsigned long last_scan_completed;
+ struct timer_list scan_timer;
+ int scan_oper_channel;
+ int scan_oper_channel_val;
+ int scan_oper_power_level;
+ int scan_oper_freq;
+ int scan_oper_phymode;
+ int scan_oper_antenna_max;
+ u8 scan_ssid[IEEE80211_MAX_SSID_LEN];
+ size_t scan_ssid_len;
+ int scan_skip_11b;
+ struct list_head sta_bss_list;
+ struct ieee80211_sta_bss *sta_bss_hash[STA_HASH_SIZE];
+ spinlock_t sta_bss_lock;
+#define IEEE80211_SCAN_MATCH_SSID BIT(0)
+#define IEEE80211_SCAN_WPA_ONLY BIT(1)
+#define IEEE80211_SCAN_EXTRA_INFO BIT(2)
+ int scan_flags;
+
+#ifdef CONFIG_HOSTAPD_WPA_TESTING
+ u32 wpa_trigger;
+#endif /* CONFIG_HOSTAPD_WPA_TESTING */
+ /* SNMP counters */
+ /* dot11CountersTable */
+ u32 dot11TransmittedFragmentCount;
+ u32 dot11MulticastTransmittedFrameCount;
+ u32 dot11FailedCount;
+ u32 dot11RetryCount;
+ u32 dot11MultipleRetryCount;
+ u32 dot11FrameDuplicateCount;
+ u32 dot11ReceivedFragmentCount;
+ u32 dot11MulticastReceivedFrameCount;
+ u32 dot11TransmittedFrameCount;
+ u32 dot11WEPUndecryptableCount;
+
+ int tx_led_counter;
+
+ u32 channel_use;
+ u32 channel_use_raw;
+ u32 stat_time;
+ struct timer_list stat_timer;
+
+ u8 bssid[ETH_ALEN]; /* BSSID for STA modes (Adhoc/Managed) */
+ struct timer_list rate_limit_timer;
+ u32 rate_limit;
+ u32 rate_limit_burst;
+ u32 rate_limit_bucket;
+ struct proc_dir_entry *proc, *proc_sta, *proc_iface;
+
+ struct work_struct sta_proc_add;
+
+ enum {
+ STA_ANTENNA_SEL_AUTO = 0,
+ STA_ANTENNA_SEL_SW_CTRL = 1,
+ STA_ANTENNA_SEL_SW_CTRL_DEBUG = 2
+ } sta_antenna_sel;
+
+ int rate_ctrl_num_up, rate_ctrl_num_down;
+
+#ifdef CONFIG_IEEE80211_DEBUG_COUNTERS
+ /* TX/RX handler statistics */
+ unsigned int tx_handlers_drop;
+ unsigned int tx_handlers_queued;
+ unsigned int tx_handlers_drop_unencrypted;
+ unsigned int tx_handlers_drop_fragment;
+ unsigned int tx_handlers_drop_wep;
+ unsigned int tx_handlers_drop_rate_limit;
+ unsigned int tx_handlers_drop_not_assoc;
+ unsigned int tx_handlers_drop_unauth_port;
+ unsigned int rx_handlers_drop;
+ unsigned int rx_handlers_queued;
+ unsigned int rx_handlers_drop_nullfunc;
+ unsigned int rx_handlers_drop_defrag;
+ unsigned int rx_handlers_drop_short;
+ unsigned int rx_handlers_drop_passive_scan;
+ unsigned int tx_expand_skb_head;
+ unsigned int tx_expand_skb_head_cloned;
+ unsigned int rx_expand_skb_head;
+ unsigned int rx_expand_skb_head2;
+ unsigned int rx_handlers_fragments;
+ unsigned int tx_status_drop;
+ unsigned int wme_rx_queue[NUM_RX_DATA_QUEUES];
+ unsigned int wme_tx_queue[NUM_RX_DATA_QUEUES];
+#define I802_DEBUG_INC(c) (c)++
+#else /* CONFIG_IEEE80211_DEBUG_COUNTERS */
+#define I802_DEBUG_INC(c) do { } while (0)
+#endif /* CONFIG_IEEE80211_DEBUG_COUNTERS */
+
+
+ int default_wep_only; /* only default WEP keys are used with this
+ * interface; this is used to decide when hwaccel
+ * can be used with default keys */
+ int total_ps_buffered; /* total number of all buffered unicast and
+ * multicast packets for power saving stations
+ */
+ int allow_broadcast_always; /* whether to allow TX of broadcast frames
+ * even when there are no associated STAs
+ */
+
+ int wifi_wme_noack_test;
+ unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
+
+ unsigned int hw_modes; /* bitfield of allowed hardware modes;
+ * (1 << MODE_*) */
+};
+
+
+/* ieee80211.c */
+int ieee80211_hw_config(struct net_device *dev);
+struct ieee80211_key_conf *
+ieee80211_key_data2conf(struct ieee80211_local *local,
+ struct ieee80211_key *data);
+void ieee80211_rx_mgmt(struct net_device *dev, struct sk_buff *skb,
+ struct ieee80211_rx_status *status, u32 msg_type);
+void ieee80211_prepare_rates(struct net_device *dev);
+void ieee80211_tx_set_iswep(struct ieee80211_txrx_data *tx);
+int ieee80211_if_add_wds(struct net_device *dev,
+ char *name,
+ struct ieee80211_if_wds *wds, int locked);
+int ieee80211_if_add_vlan(struct net_device *dev, char *name,
+ struct ieee80211_if_vlan *vlan, int locked);
+int ieee80211_if_add_norm(struct net_device *dev, char *name, u8 *bssid,
+ int locked);
+
+int ieee80211_if_remove_wds(struct net_device *dev, char *name, int locked);
+int ieee80211_if_remove_vlan(struct net_device *dev, char *name, int locked);
+int ieee80211_if_remove_norm(struct net_device *dev, char *name, int locked);
+int ieee80211_if_flush(struct net_device *dev, int locked);
+int ieee80211_if_update_wds(struct net_device *dev, char *name,
+ struct ieee80211_if_wds *wds, int locked);
+
+/* ieee80211_ioctl.c */
+int ieee80211_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
+/* Set hw encryption from ieee80211 */
+int ieee80211_set_hw_encryption(struct net_device *dev,
+ struct sta_info *sta, u8 addr[ETH_ALEN],
+ struct ieee80211_key *key);
+
+/* ieee80211_scan.c */
+void ieee80211_init_scan(struct net_device *dev);
+void ieee80211_stop_scan(struct net_device *dev);
+
+
+
+/* Least common multiple of the used rates (in 100 kbps). This is used to
+ * calculate rate_inv values for each rate so that only integers are needed. */
+#define CHAN_UTIL_RATE_LCM 95040
+/* 1 usec is 1/8 * (95040/10) = 1188 */
+#define CHAN_UTIL_PER_USEC 1188
+/* Amount of bits to shift the result right to scale the total utilization
+ * to values that will not wrap around 32-bit integers. */
+#define CHAN_UTIL_SHIFT 9
+/* Theoretical maximum of channel utilization counter in 10 ms (stat_time=1):
+ * (CHAN_UTIL_PER_USEC * 10000) >> CHAN_UTIL_SHIFT = 23203. So dividing the
+ * raw value with about 23 should give utilization in 10th of a percentage
+ * (1/1000). However, utilization is only estimated and not all intervals
+ * between frames etc. are calculated. 18 seems to give numbers that are closer
+ * to the real maximum. */
+#define CHAN_UTIL_PER_10MS 18
+#define CHAN_UTIL_HDR_LONG (202 * CHAN_UTIL_PER_USEC)
+#define CHAN_UTIL_HDR_SHORT (40 * CHAN_UTIL_PER_USEC)
+
+
+
+/* ieee80211.c */
+int ieee80211_if_add_sta(struct net_device *dev, char *name, int locked);
+int ieee80211_if_remove_sta(struct net_device *dev, char *name, int locked);
+/* ieee80211_ioctl.c */
+int ieee80211_set_compression(struct ieee80211_local *local,
+ struct net_device *dev, struct sta_info *sta);
+/* ieee80211_sta.c */
+void ieee80211_sta_timer(unsigned long ptr);
+void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb,
+ struct ieee80211_rx_status *rx_status);
+int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len);
+int ieee80211_sta_get_ssid(struct net_device *dev, char *ssid, size_t *len);
+int ieee80211_sta_set_bssid(struct net_device *dev, u8 *bssid);
+int ieee80211_sta_req_scan(struct net_device *dev, u8 *ssid, size_t ssid_len);
+int ieee80211_sta_scan_results(struct net_device *dev, char *buf, size_t len);
+void ieee80211_sta_rx_scan(struct net_device *dev, struct sk_buff *skb,
+ struct ieee80211_rx_status *rx_status);
+void ieee80211_rx_bss_list_init(struct net_device *dev);
+void ieee80211_rx_bss_list_deinit(struct net_device *dev);
+int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len);
+struct sta_info * ieee80211_ibss_add_sta(struct net_device *dev,
+ struct sk_buff *skb, u8 *bssid,
+ u8 *addr);
+int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason);
+int ieee80211_sta_disassociate(struct net_device *dev, u16 reason);
+
+
+#endif /* IEEE80211_I_H */
--- /dev/null
+/*
+ * Copyright 2002-2005, Instant802 Networks, Inc.
+ * Copyright 2005, Devicescape Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/config.h>
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/skbuff.h>
+#include <linux/if_arp.h>
+#include <linux/wireless.h>
+#include <net/iw_handler.h>
+#include <asm/uaccess.h>
+
+#include <net/ieee80211.h>
+#include <net/ieee80211_mgmt.h>
+#include "ieee80211_i.h"
+#include "hostapd_ioctl.h"
+#include "rate_control.h"
+#include "wpa.h"
+#include "aes_ccm.h"
+
+
+static int ieee80211_regdom = 0x10; /* FCC */
+MODULE_PARM(ieee80211_regdom, "i");
+MODULE_PARM_DESC(ieee80211_regdom, "IEEE 802.11 regulatory domain; 64=MKK");
+
+/*
+ * If firmware is upgraded by the vendor, additional channels can be used based
+ * on the new Japanese regulatory rules. This is indicated by setting
+ * ieee80211_japan_5ghz module parameter to one when loading the 80211 kernel
+ * module.
+ */
+static int ieee80211_japan_5ghz /* = 0 */;
+MODULE_PARM(ieee80211_japan_5ghz, "i");
+MODULE_PARM_DESC(ieee80211_japan_5ghz, "Vendor-updated firmware for 5 GHz");
+
+
+static int ieee80211_ioctl_set_beacon(struct net_device *dev,
+ struct prism2_hostapd_param *param,
+ int param_len,
+ int flag)
+{
+ struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_if_norm *norm;
+ u8 **b_head, **b_tail;
+ int *b_head_len, *b_tail_len;
+ int len;
+
+ len = ((char *) param->u.beacon.data - (char *) param) +
+ param->u.beacon.head_len + param->u.beacon.tail_len;
+
+ if (param_len > len)
+ param_len = len;
+ else if (param_len != len)
+ return -EINVAL;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (sdata->type != IEEE80211_SUB_IF_TYPE_NORM)
+ return -EINVAL;
+ norm = &sdata->u.norm;
+
+ switch (flag) {
+ case 0:
+ b_head = &norm->beacon_head;
+ b_tail = &norm->beacon_tail;
+ b_head_len = &norm->beacon_head_len;
+ b_tail_len = &norm->beacon_tail_len;
+ break;
+ default:
+ printk(KERN_DEBUG "%s: unknown beacon flag %d\n",
+ dev->name, flag);
+ return -EINVAL;
+ }
+
+ kfree(*b_head);
+ kfree(*b_tail);
+ *b_head = NULL;
+ *b_tail = NULL;
+
+ *b_head_len = param->u.beacon.head_len;
+ *b_tail_len = param->u.beacon.tail_len;
+
+ *b_head = kmalloc(*b_head_len, GFP_KERNEL);
+ if (*b_head)
+ memcpy(*b_head, param->u.beacon.data, *b_head_len);
+ else {
+ printk(KERN_DEBUG "%s: failed to allocate beacon_head\n",
+ dev->name);
+ return -ENOMEM;
+ }
+
+ if (*b_tail_len > 0) {
+ *b_tail = kmalloc(*b_tail_len, GFP_KERNEL);
+ if (*b_tail)
+ memcpy(*b_tail, param->u.beacon.data + (*b_head_len),
+ (*b_tail_len));
+ else {
+ printk(KERN_DEBUG "%s: failed to allocate "
+ "beacon_tail\n", dev->name);
+ return -ENOMEM;
+ }
+ }
+
+ return 0;
+}
+
+
+static int ieee80211_ioctl_get_hw_features(struct net_device *dev,
+ struct prism2_hostapd_param *param,
+ int param_len)
+{
+ struct ieee80211_local *local = dev->priv;
+ u8 *pos = param->u.hw_features.data;
+ int left = param_len - (pos - (u8 *) param);
+ int mode, i;
+ struct hostapd_ioctl_hw_modes_hdr *hdr;
+ struct ieee80211_rate_data *rate;
+ struct ieee80211_channel_data *chan;
+
+ param->u.hw_features.flags = 0;
+ if (local->hw->data_nullfunc_ack)
+ param->u.hw_features.flags |= HOSTAP_HW_FLAG_NULLFUNC_OK;
+
+ param->u.hw_features.num_modes = local->hw->num_modes;
+ for (mode = 0; mode < local->hw->num_modes; mode++) {
+ int clen, rlen;
+ struct ieee80211_hw_modes *m = &local->hw->modes[mode];
+ clen = m->num_channels * sizeof(struct ieee80211_channel_data);
+ rlen = m->num_rates * sizeof(struct ieee80211_rate_data);
+ if (left < sizeof(*hdr) + clen + rlen)
+ return -E2BIG;
+ left -= sizeof(*hdr) + clen + rlen;
+
+ hdr = (struct hostapd_ioctl_hw_modes_hdr *) pos;
+ hdr->mode = m->mode;
+ hdr->num_channels = m->num_channels;
+ hdr->num_rates = m->num_rates;
+
+ pos = (u8 *) (hdr + 1);
+ chan = (struct ieee80211_channel_data *) pos;
+ for (i = 0; i < m->num_channels; i++) {
+ chan[i].chan = m->channels[i].chan;
+ chan[i].freq = m->channels[i].freq;
+ chan[i].flag = m->channels[i].flag;
+ }
+ pos += clen;
+
+ rate = (struct ieee80211_rate_data *) pos;
+ for (i = 0; i < m->num_rates; i++) {
+ rate[i].rate = m->rates[i].rate;
+ rate[i].flags = m->rates[i].flags;
+ }
+ pos += rlen;
+ }
+
+ return 0;
+}
+
+
+static int ieee80211_ioctl_scan(struct net_device *dev,
+ struct prism2_hostapd_param *param)
+{
+ struct ieee80211_local *local = dev->priv;
+
+ if (local->hw->passive_scan == NULL)
+ return -EOPNOTSUPP;
+
+ if ((param->u.scan.now == 1) && (local->scan.in_scan == 1))
+ return -EBUSY;
+
+ if (param->u.scan.our_mode_only >= 0)
+ local->scan.our_mode_only = param->u.scan.our_mode_only;
+ if (param->u.scan.interval >= 0)
+ local->scan.interval = param->u.scan.interval;
+ if (param->u.scan.listen >= 0)
+ local->scan.time = param->u.scan.listen;
+ if (param->u.scan.channel > 0)
+ local->scan.channel = param->u.scan.channel;
+ if (param->u.scan.now == 1) {
+ local->scan.in_scan = 0;
+ mod_timer(&local->scan.timer, jiffies);
+ }
+
+ param->u.scan.our_mode_only = local->scan.our_mode_only;
+ param->u.scan.interval = local->scan.interval;
+ param->u.scan.listen = local->scan.time;
+ if (local->scan.in_scan == 1)
+ param->u.scan.last_rx = -1;
+ else {
+ param->u.scan.last_rx = local->scan.rx_packets;
+ local->scan.rx_packets = -1;
+ }
+ param->u.scan.channel = local->hw->modes[local->scan.mode_idx].
+ channels[local->scan.chan_idx].chan;
+
+ return 0;
+}
+
+
+static int ieee80211_ioctl_flush(struct net_device *dev,
+ struct prism2_hostapd_param *param)
+{
+ struct ieee80211_local *local = dev->priv;
+ sta_info_flush(local, NULL);
+ return 0;
+}
+
+
+
+
+static int ieee80211_ioctl_add_sta(struct net_device *dev,
+ struct prism2_hostapd_param *param)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct sta_info *sta;
+ u32 rates;
+ int i, j;
+ struct ieee80211_sub_if_data *sdata;
+ int add_key_entry = 1;
+
+ sta = sta_info_get(local, param->sta_addr);
+
+ if (sta == NULL) {
+ sta = sta_info_add(local, dev, param->sta_addr);
+ if (sta == NULL)
+ return -ENOMEM;
+ }
+
+ if (sta->dev != dev) {
+ /* Binding STA to a new interface, so remove all references to
+ * the old BSS. */
+ sta_info_remove_aid_ptr(sta);
+ }
+
+ /* TODO
+ * We "steal" the device in case someone owns it
+ * This will hurt WDS links and such when we have a
+ * WDS link and a client associating from the same station
+ */
+ sta->dev = dev;
+ sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev);
+
+ sta->flags |= WLAN_STA_AUTH | WLAN_STA_ASSOC;
+ sta->aid = param->u.add_sta.aid;
+ if (sta->aid > MAX_AID_TABLE_SIZE)
+ sta->aid = 0;
+ if (sta->aid > 0 && sdata->bss)
+ sdata->bss->sta_aid[sta->aid - 1] = sta;
+ if (sdata->bss && sta->aid > sdata->bss->max_aid)
+ sdata->bss->max_aid = sta->aid;
+
+ rates = 0;
+ for (i = 0; i < sizeof(param->u.add_sta.supp_rates); i++) {
+ int rate = (param->u.add_sta.supp_rates[i] & 0x7f) * 5;
+ if (local->conf.phymode == MODE_ATHEROS_TURBO ||
+ local->conf.phymode == MODE_ATHEROS_TURBOG)
+ rate *= 2;
+ for (j = 0; j < local->num_curr_rates; j++) {
+ if (local->curr_rates[j].rate == rate)
+ rates |= BIT(j);
+ }
+
+ }
+ sta->supp_rates = rates;
+
+ rate_control_rate_init(local, sta);
+
+
+
+ if (param->u.add_sta.wds_flags & 0x01)
+ sta->flags |= WLAN_STA_WDS;
+ else
+ sta->flags &= ~WLAN_STA_WDS;
+
+ if (add_key_entry && sta->key == NULL && sdata->default_key == NULL &&
+ local->hw->set_key) {
+ struct ieee80211_key_conf conf;
+ /* Add key cache entry with NULL key type because this may used
+ * for TX filtering. */
+ memset(&conf, 0, sizeof(conf));
+ conf.hw_key_idx = HW_KEY_IDX_INVALID;
+ conf.alg = ALG_NULL;
+ conf.force_sw_encrypt = 1;
+ if (local->hw->set_key(dev, SET_KEY, sta->addr, &conf,
+ sta->aid)) {
+ sta->key_idx_compression = HW_KEY_IDX_INVALID;
+ } else {
+ sta->key_idx_compression = conf.hw_key_idx;
+ }
+ }
+
+ sta_info_release(local, sta);
+
+ return 0;
+}
+
+
+static int ieee80211_ioctl_remove_sta(struct net_device *dev,
+ struct prism2_hostapd_param *param)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct sta_info *sta;
+
+ sta = sta_info_get(local, param->sta_addr);
+ if (sta) {
+ sta_info_release(local, sta);
+ sta_info_free(local, sta, 1);
+ }
+
+ return sta ? 0 : -ENOENT;
+}
+
+
+static int ieee80211_ioctl_get_dot11counterstable(struct net_device *dev,
+ struct prism2_hostapd_param *param)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct ieee80211_low_level_stats stats;
+
+ memset(&stats, 0, sizeof(stats));
+ if (local->hw->get_stats)
+ local->hw->get_stats(dev, &stats);
+ param->u.dot11CountersTable.dot11TransmittedFragmentCount =
+ local->dot11TransmittedFragmentCount;
+ param->u.dot11CountersTable.dot11MulticastTransmittedFrameCount =
+ local->dot11MulticastTransmittedFrameCount;
+ param->u.dot11CountersTable.dot11ReceivedFragmentCount =
+ local->dot11ReceivedFragmentCount;
+ param->u.dot11CountersTable.dot11MulticastReceivedFrameCount =
+ local->dot11MulticastReceivedFrameCount;
+ param->u.dot11CountersTable.dot11TransmittedFrameCount =
+ local->dot11TransmittedFrameCount;
+ param->u.dot11CountersTable.dot11FCSErrorCount =
+ stats.dot11FCSErrorCount;
+ param->u.dot11CountersTable.dot11ACKFailureCount =
+ stats.dot11ACKFailureCount;
+ param->u.dot11CountersTable.dot11RTSFailureCount =
+ stats.dot11RTSFailureCount;
+ param->u.dot11CountersTable.dot11RTSSuccessCount =
+ stats.dot11RTSSuccessCount;
+
+ return 0;
+}
+
+static int ieee80211_ioctl_get_info_sta(struct net_device *dev,
+ struct prism2_hostapd_param *param)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct sta_info *sta;
+
+ if (param->sta_addr[0] == 0xff && param->sta_addr[1] == 0xff &&
+ param->sta_addr[2] == 0xff && param->sta_addr[3] == 0xff &&
+ param->sta_addr[4] == 0xff && param->sta_addr[5] == 0xff) {
+ struct ieee80211_sub_if_data *sdata;
+ struct net_device_stats *stats;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ stats = ieee80211_dev_stats(sdata->master);
+ param->u.get_info_sta.rx_bytes = stats->rx_bytes;
+ param->u.get_info_sta.tx_bytes = stats->tx_bytes;
+ /* go through all STAs and get STA with lowest max. rate */
+ param->u.get_info_sta.current_tx_rate =
+ local->curr_rates[sta_info_min_txrate_get(local)].rate;
+ return 0;
+ }
+
+ sta = sta_info_get(local, param->sta_addr);
+
+ if (!sta)
+ return -ENOENT;
+
+ param->u.get_info_sta.inactive_msec =
+ jiffies_to_msecs(jiffies - sta->last_rx);
+ param->u.get_info_sta.rx_packets = sta->rx_packets;
+ param->u.get_info_sta.tx_packets = sta->tx_packets;
+ param->u.get_info_sta.rx_bytes = sta->rx_bytes;
+ param->u.get_info_sta.tx_bytes = sta->tx_bytes;
+ param->u.get_info_sta.channel_use = sta->channel_use;
+ param->u.get_info_sta.flags = sta->flags;
+ if (sta->txrate >= 0 && sta->txrate < local->num_curr_rates)
+ param->u.get_info_sta.current_tx_rate =
+ local->curr_rates[sta->txrate].rate;
+ param->u.get_info_sta.num_ps_buf_frames =
+ skb_queue_len(&sta->ps_tx_buf);
+ param->u.get_info_sta.tx_retry_failed = sta->tx_retry_failed;
+ param->u.get_info_sta.tx_retry_count = sta->tx_retry_count;
+ param->u.get_info_sta.last_rssi = sta->last_rssi;
+ param->u.get_info_sta.last_ack_rssi = sta->last_ack_rssi[2];
+
+ sta_info_release(local, sta);
+
+ return 0;
+}
+
+
+static int ieee80211_ioctl_set_flags_sta(struct net_device *dev,
+ struct prism2_hostapd_param *param)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct sta_info *sta;
+
+ sta = sta_info_get(local, param->sta_addr);
+ if (sta) {
+ sta->flags |= param->u.set_flags_sta.flags_or;
+ sta->flags &= param->u.set_flags_sta.flags_and;
+ if (local->hw->set_port_auth &&
+ (param->u.set_flags_sta.flags_or & WLAN_STA_AUTHORIZED) &&
+ local->hw->set_port_auth(local->mdev, sta->addr, 1))
+ printk(KERN_DEBUG "%s: failed to set low-level driver "
+ "PAE state (authorized) for " MACSTR "\n",
+ dev->name, MAC2STR(sta->addr));
+ if (local->hw->set_port_auth &&
+ !(param->u.set_flags_sta.flags_and & WLAN_STA_AUTHORIZED)
+ && local->hw->set_port_auth(local->mdev, sta->addr, 0))
+ printk(KERN_DEBUG "%s: failed to set low-level driver "
+ "PAE state (unauthorized) for " MACSTR "\n",
+ dev->name, MAC2STR(sta->addr));
+ sta_info_release(local, sta);
+ }
+
+ return sta ? 0 : -ENOENT;
+}
+
+
+int ieee80211_set_hw_encryption(struct net_device *dev,
+ struct sta_info *sta, u8 addr[ETH_ALEN],
+ struct ieee80211_key *key)
+{
+ struct ieee80211_key_conf *keyconf = NULL;
+ struct ieee80211_local *local = dev->priv;
+ int rc = 0;
+
+ /* default to sw encryption; this will be cleared by low-level
+ * driver if the hw supports requested encryption */
+ if (key)
+ key->force_sw_encrypt = 1;
+
+ if (key && local->hw->set_key &&
+ (!local->conf.sw_encrypt || !local->conf.sw_decrypt) &&
+ (keyconf = ieee80211_key_data2conf(local, key)) != NULL) {
+ if (local->hw->set_key(dev, SET_KEY, addr,
+ keyconf, sta ? sta->aid : 0)) {
+ rc = HOSTAP_CRYPT_ERR_KEY_SET_FAILED;
+ key->force_sw_encrypt = 1;
+ key->hw_key_idx = HW_KEY_IDX_INVALID;
+ } else {
+ key->force_sw_encrypt =
+ keyconf->force_sw_encrypt;
+ key->hw_key_idx =
+ keyconf->hw_key_idx;
+
+ }
+ }
+ kfree(keyconf);
+
+ return rc;
+}
+
+
+static int ieee80211_ioctl_set_encryption(struct net_device *dev,
+ struct prism2_hostapd_param *param,
+ int param_len)
+{
+ struct ieee80211_local *local = dev->priv;
+ int alg, ret = 0;
+ struct sta_info *sta;
+ struct ieee80211_key **key;
+ int set_tx_key = 0, try_hwaccel = 1;
+ struct ieee80211_key_conf *keyconf;
+ struct ieee80211_sub_if_data *sdata;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ param->u.crypt.err = 0;
+ param->u.crypt.alg[HOSTAP_CRYPT_ALG_NAME_LEN - 1] = '\0';
+
+ if (param_len <
+ (int) ((char *) param->u.crypt.key - (char *) param) +
+ param->u.crypt.key_len) {
+ printk(KERN_DEBUG "%s: set_encrypt - invalid param_lem\n",
+ dev->name);
+ return -EINVAL;
+ }
+
+ if (param->sta_addr[0] == 0xff && param->sta_addr[1] == 0xff &&
+ param->sta_addr[2] == 0xff && param->sta_addr[3] == 0xff &&
+ param->sta_addr[4] == 0xff && param->sta_addr[5] == 0xff) {
+ sta = NULL;
+ if (param->u.crypt.idx >= NUM_DEFAULT_KEYS) {
+ printk(KERN_DEBUG "%s: set_encrypt - invalid idx=%d\n",
+ dev->name, param->u.crypt.idx);
+ return -EINVAL;
+ }
+ key = &sdata->keys[param->u.crypt.idx];
+ if (param->u.crypt.flags & HOSTAP_CRYPT_FLAG_SET_TX_KEY)
+ set_tx_key = 1;
+
+ /* Disable hwaccel for default keys when the interface is not
+ * the default one.
+ * TODO: consider adding hwaccel support for these; at least
+ * Atheros key cache should be able to handle this since AP is
+ * only transmitting frames with default keys. */
+ /* FIX: hw key cache can be used when only one virtual
+ * STA is associated with each AP. If more than one STA
+ * is associated to the same AP, software encryption
+ * must be used. This should be done automatically
+ * based on configured station devices. For the time
+ * being, this can be only set at compile time. */
+ if (sdata->type == IEEE80211_SUB_IF_TYPE_STA) {
+ if (0 /* FIX: more than one STA per AP */)
+ try_hwaccel = 0;
+ } else
+ if (sdata->type != IEEE80211_SUB_IF_TYPE_NORM ||
+ dev != local->wdev)
+ try_hwaccel = 0;
+ } else {
+ if (param->u.crypt.idx != 0) {
+ printk(KERN_DEBUG "%s: set_encrypt - non-zero idx for "
+ "individual key\n", dev->name);
+ return -EINVAL;
+ }
+
+ sta = sta_info_get(local, param->sta_addr);
+ if (sta == NULL) {
+ param->u.crypt.err = HOSTAP_CRYPT_ERR_UNKNOWN_ADDR;
+#ifdef CONFIG_IEEE80211_VERBOSE_DEBUG
+ printk(KERN_DEBUG "%s: set_encrypt - unknown addr "
+ MACSTR "\n",
+ dev->name, MAC2STR(param->sta_addr));
+#endif /* CONFIG_IEEE80211_VERBOSE_DEBUG */
+
+ return -ENOENT;
+ }
+
+ key = &sta->key;
+ }
+
+ if (strcmp(param->u.crypt.alg, "none") == 0) {
+ alg = ALG_NONE;
+ } else if (strcmp(param->u.crypt.alg, "WEP") == 0) {
+ alg = ALG_WEP;
+ } else if (strcmp(param->u.crypt.alg, "TKIP") == 0) {
+ if (param->u.crypt.key_len != ALG_TKIP_KEY_LEN) {
+ printk(KERN_DEBUG "%s: set_encrypt - invalid TKIP key "
+ "length %d\n", dev->name,
+ param->u.crypt.key_len);
+ ret = -EINVAL;
+ goto done;
+ }
+ alg = ALG_TKIP;
+ } else if (strcmp(param->u.crypt.alg, "CCMP") == 0) {
+ if (param->u.crypt.key_len != ALG_CCMP_KEY_LEN) {
+ printk(KERN_DEBUG "%s: set_encrypt - invalid CCMP key "
+ "length %d\n", dev->name,
+ param->u.crypt.key_len);
+ ret = -EINVAL;
+ goto done;
+ }
+ alg = ALG_CCMP;
+ } else {
+ param->u.crypt.err = HOSTAP_CRYPT_ERR_UNKNOWN_ALG;
+ printk(KERN_DEBUG "%s: set_encrypt - unknown alg\n",
+ dev->name);
+ ret = -EINVAL;
+ goto done;
+ }
+
+ /* FIX:
+ * Cannot configure default hwaccel keys with WEP algorithm, if
+ * any of the virtual interfaces is using static WEP
+ * configuration because hwaccel would otherwise try to decrypt
+ * these frames.
+ *
+ * For now, just disable WEP hwaccel for broadcast when there is
+ * possibility of conflict with default keys. This can maybe later be
+ * optimized by using non-default keys (at least with Atheros ar521x).
+ */
+ if (!sta && alg == ALG_WEP && !local->default_wep_only &&
+ local->conf.mode != IW_MODE_ADHOC &&
+ local->conf.mode != IW_MODE_INFRA) {
+ try_hwaccel = 0;
+ }
+
+ if (local->hw->device_hides_wep) {
+ /* Software encryption cannot be used with devices that hide
+ * encryption from the host system, so always try to use
+ * hardware acceleration with such devices. */
+ try_hwaccel = 1;
+ }
+
+ if (local->hw->no_tkip_wmm_hwaccel && alg == ALG_TKIP) {
+ if (sta && (sta->flags & WLAN_STA_WME)) {
+ /* Hardware does not support hwaccel with TKIP when using WMM.
+ */
+ try_hwaccel = 0;
+ }
+ else if (sdata->type == IEEE80211_SUB_IF_TYPE_STA) {
+ sta = sta_info_get(local, sdata->u.sta.bssid);
+ if (sta) {
+ if (sta->flags & WLAN_STA_WME) {
+ try_hwaccel = 0;
+ }
+ sta_info_release(local, sta);
+ sta = NULL;
+ }
+ }
+ }
+
+
+ if (alg == ALG_NONE) {
+ keyconf = NULL;
+ if (try_hwaccel && *key && local->hw->set_key &&
+ (keyconf = ieee80211_key_data2conf(local, *key)) != NULL &&
+ local->hw->set_key(dev, DISABLE_KEY, param->sta_addr,
+ keyconf, sta ? sta->aid : 0)) {
+ param->u.crypt.err = HOSTAP_CRYPT_ERR_KEY_SET_FAILED;
+ printk(KERN_DEBUG "%s: set_encrypt - low-level disable"
+ " failed\n", dev->name);
+ ret = -EINVAL;
+ }
+ kfree(keyconf);
+
+ if (sdata->default_key == *key)
+ sdata->default_key = NULL;
+ kfree(*key);
+ *key = NULL;
+ } else {
+ if (*key == NULL || (*key)->keylen < param->u.crypt.key_len) {
+ kfree(*key);
+ *key = kmalloc(sizeof(struct ieee80211_key) +
+ param->u.crypt.key_len, GFP_ATOMIC);
+ if (*key == NULL) {
+ ret = -ENOMEM;
+ goto done;
+ }
+ }
+ memset(*key, 0, sizeof(struct ieee80211_key) +
+ param->u.crypt.key_len);
+ /* default to sw encryption; low-level driver sets these if the
+ * requested encryption is supported */
+ (*key)->hw_key_idx = HW_KEY_IDX_INVALID;
+ (*key)->force_sw_encrypt = 1;
+
+ (*key)->alg = alg;
+ (*key)->keyidx = param->u.crypt.idx;
+ (*key)->keylen = param->u.crypt.key_len;
+ memcpy((*key)->key, param->u.crypt.key,
+ param->u.crypt.key_len);
+ if (set_tx_key)
+ (*key)->default_tx_key = 1;
+
+ if (alg == ALG_CCMP) {
+ /* Initialize AES key state here as an optimization
+ * so that it does not need to be initialized for every
+ * packet. */
+ ieee80211_aes_key_setup_encrypt(
+ (*key)->u.ccmp.aes_state, (*key)->key);
+ }
+
+ if (try_hwaccel &&
+ (alg == ALG_WEP || alg == ALG_TKIP || alg == ALG_CCMP))
+ param->u.crypt.err = ieee80211_set_hw_encryption(
+ dev, sta, param->sta_addr, *key);
+ }
+
+ if (set_tx_key || (sta == NULL && sdata->default_key == NULL)) {
+ sdata->default_key = *key;
+ if (local->hw->set_key_idx &&
+ local->hw->set_key_idx(dev, param->u.crypt.idx))
+ printk(KERN_DEBUG "%s: failed to set TX key idx for "
+ "low-level driver\n", dev->name);
+ }
+
+ done:
+ if (sta)
+ sta_info_release(local, sta);
+
+ return ret;
+}
+
+static int ieee80211_ioctl_get_encryption(struct net_device *dev,
+ struct prism2_hostapd_param *param,
+ int param_len)
+{
+ struct ieee80211_local *local = dev->priv;
+ int ret = 0;
+ struct sta_info *sta;
+ struct ieee80211_key **key;
+ int max_key_len;
+ struct ieee80211_sub_if_data *sdata;
+ u8 *pos;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ param->u.crypt.err = 0;
+
+ max_key_len = param_len -
+ (int) ((char *) param->u.crypt.key - (char *) param);
+ if (max_key_len < 0)
+ return -EINVAL;
+
+ if (param->sta_addr[0] == 0xff && param->sta_addr[1] == 0xff &&
+ param->sta_addr[2] == 0xff && param->sta_addr[3] == 0xff &&
+ param->sta_addr[4] == 0xff && param->sta_addr[5] == 0xff) {
+ sta = NULL;
+ if (param->u.crypt.idx > NUM_DEFAULT_KEYS) {
+ param->u.crypt.idx = sdata->default_key ?
+ sdata->default_key->keyidx : 0;
+ return 0;
+ } else
+ key = &sdata->keys[param->u.crypt.idx];
+ } else {
+ sta = sta_info_get(local, param->sta_addr);
+ if (sta == NULL) {
+ param->u.crypt.err = HOSTAP_CRYPT_ERR_UNKNOWN_ADDR;
+ return -EINVAL;
+ }
+
+ key = &sta->key;
+ }
+
+
+ memset(param->u.crypt.seq_counter, 0, HOSTAP_SEQ_COUNTER_SIZE);
+ if (*key == NULL) {
+ memcpy(param->u.crypt.alg, "none", 5);
+ param->u.crypt.key_len = 0;
+ param->u.crypt.idx = 0xff;
+ } else {
+ switch ((*key)->alg) {
+ case ALG_WEP:
+ memcpy(param->u.crypt.alg, "WEP", 4);
+ break;
+ case ALG_TKIP:
+ {
+ u32 iv32;
+ u16 iv16;
+
+ memcpy(param->u.crypt.alg, "TKIP", 5);
+ if (local->hw->get_sequence_counter) {
+ /* Get transmit counter from low level driver */
+ if (local->hw->get_sequence_counter(dev,
+ param->sta_addr,
+ (*key)->keyidx,
+ IEEE80211_SEQ_COUNTER_TX,
+ &iv32,
+ &iv16)) {
+ /* Error getting value from device */
+ return -EIO;
+ }
+ } else {
+ /* Get it from our own local data */
+ iv32 = (*key)->u.tkip.iv32;
+ iv16 = (*key)->u.tkip.iv16;
+ }
+ pos = param->u.crypt.seq_counter;
+ *pos++ = iv16 & 0xff;
+ *pos++ = (iv16 >> 8) & 0xff;
+ *pos++ = iv32 & 0xff;
+ *pos++ = (iv32 >> 8) & 0xff;
+ *pos++ = (iv32 >> 16) & 0xff;
+ *pos++ = (iv32 >> 24) & 0xff;
+ break;
+ }
+ case ALG_CCMP:
+ {
+ u8 *pn;
+ memcpy(param->u.crypt.alg, "CCMP", 5);
+ pos = param->u.crypt.seq_counter;
+ pn = (*key)->u.ccmp.tx_pn;
+ *pos++ = pn[5];
+ *pos++ = pn[4];
+ *pos++ = pn[3];
+ *pos++ = pn[2];
+ *pos++ = pn[1];
+ *pos++ = pn[0];
+ break;
+ }
+ default:
+ memcpy(param->u.crypt.alg, "unknown", 8);
+ break;
+ }
+
+ if (max_key_len < (*key)->keylen)
+ ret = -E2BIG;
+ else {
+ param->u.crypt.key_len = (*key)->keylen;
+ memcpy(param->u.crypt.key, (*key)->key,
+ (*key)->keylen);
+ }
+ }
+
+ if (sta)
+ sta_info_release(local, sta);
+
+ return ret;
+}
+
+
+#ifdef CONFIG_HOSTAPD_WPA_TESTING
+static int ieee80211_ioctl_wpa_trigger(struct net_device *dev,
+ struct prism2_hostapd_param *param)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct sta_info *sta;
+
+ if (param->sta_addr[0] == 0xff && param->sta_addr[1] == 0xff &&
+ param->sta_addr[2] == 0xff && param->sta_addr[3] == 0xff &&
+ param->sta_addr[4] == 0xff && param->sta_addr[5] == 0xff) {
+ local->wpa_trigger = param->u.wpa_trigger.trigger;
+ return 0;
+ }
+
+ sta = sta_info_get(local, param->sta_addr);
+ if (sta == NULL) {
+ printk(KERN_DEBUG "%s: wpa_trigger - unknown addr\n",
+ dev->name);
+ return -EINVAL;
+ }
+
+ sta->wpa_trigger = param->u.wpa_trigger.trigger;
+
+ sta_info_release(local, sta);
+ return 0;
+}
+#endif /* CONFIG_HOSTAPD_WPA_TESTING */
+
+
+static int ieee80211_ioctl_set_rate_sets(struct net_device *dev,
+ struct prism2_hostapd_param *param,
+ int param_len)
+{
+ struct ieee80211_local *local = dev->priv;
+ u16 *pos = (u16 *) param->u.set_rate_sets.data;
+ int left = param_len - ((u8 *) pos - (u8 *) param);
+ int i, mode, num_supp, num_basic, *supp, *basic, *prev;
+
+ mode = param->u.set_rate_sets.mode;
+ num_supp = param->u.set_rate_sets.num_supported_rates;
+ num_basic = param->u.set_rate_sets.num_basic_rates;
+
+ if (left < (num_supp + num_basic) * 2) {
+ printk(KERN_WARNING "%s: invalid length in hostapd set rate "
+ "sets ioctl (%d != %d)\n", dev->name, left,
+ (num_supp + num_basic) * 2);
+ return -EINVAL;
+ }
+
+ supp = (int *) kmalloc((num_supp + 1) * sizeof(int), GFP_KERNEL);
+ basic = (int *) kmalloc((num_basic + 1) * sizeof(int), GFP_KERNEL);
+
+ if (!supp || !basic) {
+ kfree(supp);
+ kfree(basic);
+ return -ENOMEM;
+ }
+
+ for (i = 0; i < num_supp; i++)
+ supp[i] = *pos++;
+ supp[i] = -1;
+
+ for (i = 0; i < num_basic; i++)
+ basic[i] = *pos++;
+ basic[i] = -1;
+
+ if (num_supp == 0) {
+ kfree(supp);
+ supp = NULL;
+ }
+
+ if (num_basic == 0) {
+ kfree(basic);
+ basic = NULL;
+ }
+
+ prev = local->supp_rates[mode];
+ local->supp_rates[mode] = supp;
+ kfree(prev);
+
+ prev = local->basic_rates[mode];
+ local->basic_rates[mode] = basic;
+ kfree(prev);
+
+ if (mode == local->conf.phymode) {
+ /* TODO: should update STA TX rates and remove STAs if they
+ * do not have any remaining supported rates after the change
+ */
+ ieee80211_prepare_rates(dev);
+ }
+
+ return 0;
+}
+
+
+static int ieee80211_ioctl_add_if(struct net_device *dev,
+ struct prism2_hostapd_param *param,
+ int param_len)
+{
+ u8 *pos = param->u.if_info.data;
+ int left = param_len - ((u8 *) pos - (u8 *) param);
+
+ if (param->u.if_info.type == HOSTAP_IF_WDS) {
+ struct ieee80211_if_wds iwds;
+ struct hostapd_if_wds *wds =
+ (struct hostapd_if_wds *) param->u.if_info.data;
+
+ if (left < sizeof(struct ieee80211_if_wds))
+ return -EPROTO;
+
+ memcpy(iwds.remote_addr, wds->remote_addr, ETH_ALEN);
+
+ return ieee80211_if_add_wds(dev, param->u.if_info.name,
+ &iwds, 1);
+ } else if (param->u.if_info.type == HOSTAP_IF_VLAN) {
+ struct hostapd_if_vlan *vlan = (struct hostapd_if_vlan *) pos;
+ struct ieee80211_if_vlan ivlan;
+
+ if (left < sizeof(struct hostapd_if_vlan))
+ return -EPROTO;
+
+ ivlan.id = vlan->id;
+
+ return ieee80211_if_add_vlan(dev, param->u.if_info.name,
+ &ivlan, 1);
+ } else if (param->u.if_info.type == HOSTAP_IF_BSS) {
+ struct hostapd_if_bss *bss =
+ (struct hostapd_if_bss *) param->u.if_info.data;
+
+ if (left < sizeof(struct hostapd_if_bss))
+ return -EPROTO;
+
+ return ieee80211_if_add_norm(dev, param->u.if_info.name,
+ bss->bssid, 1);
+ } else if (param->u.if_info.type == HOSTAP_IF_STA) {
+#if 0
+ struct hostapd_if_sta *sta =
+ (struct hostapd_if_sta *) param->u.if_info.data;
+#endif
+
+ if (left < sizeof(struct hostapd_if_sta))
+ return -EPROTO;
+
+ return ieee80211_if_add_sta(dev, param->u.if_info.name, 1);
+ } else
+ return -EINVAL;
+
+ return 0;
+}
+
+
+static int ieee80211_ioctl_remove_if(struct net_device *dev,
+ struct prism2_hostapd_param *param)
+{
+ if (param->u.if_info.type == HOSTAP_IF_WDS) {
+ return ieee80211_if_remove_wds(dev, param->u.if_info.name, 1);
+ } else if (param->u.if_info.type == HOSTAP_IF_VLAN) {
+ return ieee80211_if_remove_vlan(dev, param->u.if_info.name, 1);
+ } else if (param->u.if_info.type == HOSTAP_IF_BSS) {
+ return ieee80211_if_remove_norm(dev, param->u.if_info.name, 1);
+ } else if (param->u.if_info.type == HOSTAP_IF_STA) {
+ return ieee80211_if_remove_sta(dev, param->u.if_info.name, 1);
+ } else {
+ return -EINVAL;
+ }
+}
+
+
+static int ieee80211_ioctl_update_if(struct net_device *dev,
+ struct prism2_hostapd_param *param,
+ int param_len)
+{
+ u8 *pos = param->u.if_info.data;
+ int left = param_len - ((u8 *) pos - (u8 *) param);
+
+ if (param->u.if_info.type == HOSTAP_IF_WDS) {
+ struct ieee80211_if_wds iwds;
+ struct hostapd_if_wds *wds =
+ (struct hostapd_if_wds *) param->u.if_info.data;
+
+ if (left < sizeof(struct ieee80211_if_wds))
+ return -EPROTO;
+
+ memcpy(iwds.remote_addr, wds->remote_addr, ETH_ALEN);
+
+ return ieee80211_if_update_wds(dev, param->u.if_info.name,
+ &iwds, 1);
+ } else {
+ return -EOPNOTSUPP;
+ }
+}
+
+
+static int ieee80211_ioctl_flush_ifs(struct net_device *dev,
+ struct prism2_hostapd_param *param)
+{
+ return ieee80211_if_flush(dev, 1);
+}
+
+
+static int ieee80211_ioctl_scan_req(struct net_device *dev,
+ struct prism2_hostapd_param *param,
+ int param_len)
+{
+ u8 *pos = param->u.scan_req.ssid;
+ int left = param_len - ((u8 *) pos - (u8 *) param);
+ int len = param->u.scan_req.ssid_len;
+
+ if (left < len || len > IEEE80211_MAX_SSID_LEN)
+ return -EINVAL;
+
+ return ieee80211_sta_req_scan(dev, pos, len);
+}
+
+
+static int ieee80211_ioctl_sta_get_state(struct net_device *dev,
+ struct prism2_hostapd_param *param)
+{
+ struct ieee80211_sub_if_data *sdata;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (sdata->type != IEEE80211_SUB_IF_TYPE_STA)
+ return -EINVAL;
+ param->u.sta_get_state.state = sdata->u.sta.state;
+ return 0;
+}
+
+
+static int ieee80211_ioctl_mlme(struct net_device *dev,
+ struct prism2_hostapd_param *param)
+{
+ struct ieee80211_sub_if_data *sdata;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (sdata->type != IEEE80211_SUB_IF_TYPE_STA)
+ return -EINVAL;
+ switch (param->u.mlme.cmd) {
+ case MLME_STA_DEAUTH:
+ ieee80211_sta_deauthenticate(dev, param->u.mlme.reason_code);
+ break;
+ case MLME_STA_DISASSOC:
+ ieee80211_sta_disassociate(dev, param->u.mlme.reason_code);
+ break;
+ }
+ return 0;
+}
+
+
+static int ieee80211_ioctl_get_load_stats(struct net_device *dev,
+ struct prism2_hostapd_param *param)
+{
+ struct ieee80211_local *local = dev->priv;
+
+ param->u.get_load_stats.channel_use = local->channel_use;
+/* if (param->u.get_load_stats.flags & LOAD_STATS_CLEAR)
+ local->channel_use = 0; */ /* now it's not raw counter */
+
+ return 0;
+}
+
+
+static int ieee80211_ioctl_set_sta_vlan(struct net_device *dev,
+ struct prism2_hostapd_param *param)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct sta_info *sta;
+
+ sta = sta_info_get(local, param->sta_addr);
+ if (sta) {
+ struct net_device *new_vlan_dev;
+ new_vlan_dev =
+ dev_get_by_name(param->u.set_sta_vlan.vlan_name);
+ if (new_vlan_dev) {
+#if 0
+ printk("%s: Station " MACSTR " moved to vlan: %s\n",
+ dev->name, MAC2STR(param->sta_addr),
+ new_vlan_dev->name);
+#endif
+ sta->dev = new_vlan_dev;
+ sta->vlan_id = param->u.set_sta_vlan.vlan_id;
+ dev_put(new_vlan_dev);
+ }
+ sta_info_release(local, sta);
+ }
+
+ return sta ? 0 : -ENOENT;
+}
+
+
+static int
+ieee80211_ioctl_set_generic_info_elem(struct net_device *dev,
+ struct prism2_hostapd_param *param,
+ int param_len)
+{
+ struct ieee80211_local *local = dev->priv;
+ u8 *pos = param->u.set_generic_info_elem.data;
+ int left = param_len - ((u8 *) pos - (u8 *) param);
+ int len = param->u.set_generic_info_elem.len;
+
+ if (left < len)
+ return -EINVAL;
+
+ {
+ struct ieee80211_sub_if_data *sdata;
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (sdata->type == IEEE80211_SUB_IF_TYPE_STA)
+ return ieee80211_sta_set_extra_ie(dev, pos, len);
+ }
+ kfree(local->conf.generic_elem);
+ local->conf.generic_elem = kmalloc(len, GFP_KERNEL);
+ if (local->conf.generic_elem == NULL)
+ return -ENOMEM;
+ memcpy(local->conf.generic_elem, pos, len);
+ local->conf.generic_elem_len = len;
+
+ return ieee80211_hw_config(dev);
+}
+
+
+static int ieee80211_ioctl_set_regulatory_domain(struct net_device *dev,
+ struct prism2_hostapd_param *param)
+{
+ struct ieee80211_conf *conf = ieee80211_get_hw_conf(dev);
+ conf->regulatory_domain = param->u.set_regulatory_domain.rd;
+ return 0;
+}
+
+
+static int ieee80211_ioctl_set_adm_status(struct net_device *dev,
+ int val)
+{
+ struct ieee80211_conf *conf = ieee80211_get_hw_conf(dev);
+ conf->adm_status = val;
+ return ieee80211_hw_config(dev);
+}
+
+static int
+ieee80211_ioctl_set_tx_queue_params(struct net_device *dev,
+ struct prism2_hostapd_param *param)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct ieee80211_tx_queue_params qparam;
+
+ if (!local->hw->conf_tx) {
+ printk(KERN_DEBUG "%s: low-level driver does not support TX "
+ "queue configuration\n", dev->name);
+ return -EOPNOTSUPP;
+ }
+
+ memset(&qparam, 0, sizeof(qparam));
+ qparam.aifs = param->u.tx_queue_params.aifs;
+ qparam.cw_min = param->u.tx_queue_params.cw_min;
+ qparam.cw_max = param->u.tx_queue_params.cw_max;
+ qparam.burst_time = param->u.tx_queue_params.burst_time;
+
+ return local->hw->conf_tx(dev, param->u.tx_queue_params.queue,
+ &qparam);
+}
+
+
+static int ieee80211_ioctl_get_tx_stats(struct net_device *dev,
+ struct prism2_hostapd_param *param)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct ieee80211_tx_queue_stats stats;
+ int ret, i;
+
+ if (!local->hw->get_tx_stats)
+ return -EOPNOTSUPP;
+
+ memset(&stats, 0, sizeof(stats));
+ ret = local->hw->get_tx_stats(dev, &stats);
+ if (ret)
+ return ret;
+
+ for (i = 0; i < 4; i++) {
+ param->u.get_tx_stats.data[i].len = stats.data[i].len;
+ param->u.get_tx_stats.data[i].limit = stats.data[i].limit;
+ param->u.get_tx_stats.data[i].count = stats.data[i].count;
+ }
+
+ return 0;
+}
+
+
+static int ieee80211_ioctl_set_bss(struct net_device *dev,
+ struct prism2_hostapd_param *param)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct ieee80211_conf *conf = ieee80211_get_hw_conf(dev);
+ int i, bss_count;
+ int new_count = param->u.set_bss.bss_count;
+ struct net_device **bss_devs, **prev;
+ struct net_device **sta_devs, **prev_sta_devs;
+
+ bss_count = 0;
+ for (i = 0; i < conf->bss_count; i++) {
+ if (local->bss_devs[i])
+ bss_count++;
+ }
+
+ if (new_count < bss_count) {
+ printk(KERN_DEBUG "%s: invalid BSS count %d (in use: %d)\n",
+ dev->name, new_count, bss_count);
+ return -EINVAL;
+ }
+
+ bss_devs = kmalloc(new_count * sizeof(struct net_device *),
+ GFP_KERNEL);
+ if (bss_devs == NULL)
+ return -ENOMEM;
+ sta_devs = kmalloc(new_count * sizeof(struct net_device *),
+ GFP_KERNEL);
+ if (sta_devs == NULL) {
+ kfree(bss_devs);
+ return -ENOMEM;
+ }
+
+ spin_lock_bh(&local->sub_if_lock);
+ memcpy(bss_devs, local->bss_devs,
+ bss_count * sizeof(struct net_device *));
+ memset(&bss_devs[bss_count], 0,
+ (new_count - bss_count) * sizeof(struct net_device *));
+
+ memcpy(conf->bssid_mask, param->u.set_bss.bssid_mask, ETH_ALEN);
+
+ prev = local->bss_devs;
+ local->bss_devs = bss_devs;
+ conf->bss_count = new_count;
+
+ memcpy(sta_devs, local->sta_devs,
+ bss_count * sizeof(struct net_device *));
+ memset(&sta_devs[bss_count], 0,
+ (new_count - bss_count) * sizeof(struct net_device *));
+ prev_sta_devs = local->sta_devs;
+ local->sta_devs = sta_devs;
+
+ spin_unlock_bh(&local->sub_if_lock);
+ kfree(prev);
+ kfree(prev_sta_devs);
+
+ return ieee80211_hw_config(dev);
+}
+
+
+static int ieee80211_ioctl_set_channel_flag(struct net_device *dev,
+ struct prism2_hostapd_param *param)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct ieee80211_hw_modes *mode = NULL;
+ struct ieee80211_channel *chan = NULL;
+ int i;
+
+ for (i = 0; i < local->hw->num_modes; i++) {
+ mode = &local->hw->modes[i];
+ if (mode->mode == param->u.set_channel_flag.mode)
+ break;
+ mode = NULL;
+ }
+
+ if (!mode)
+ return -ENOENT;
+
+ for (i = 0; i < mode->num_channels; i++) {
+ chan = &mode->channels[i];
+ if (chan->chan == param->u.set_channel_flag.chan)
+ break;
+ chan = NULL;
+ }
+
+ if (!chan)
+ return -ENOENT;
+
+ chan->flag = param->u.set_channel_flag.flag;
+ chan->power_level = param->u.set_channel_flag.power_level;
+ chan->antenna_max = param->u.set_channel_flag.antenna_max;
+
+ return 0;
+}
+
+
+static int ieee80211_ioctl_set_quiet_params(struct net_device *dev,
+ struct prism2_hostapd_param *param)
+{
+ struct ieee80211_conf *conf = ieee80211_get_hw_conf(dev);
+ conf->quiet_duration = param->u.quiet.duration;
+ conf->quiet_offset = param->u.quiet.offset;
+ conf->quiet_period = param->u.quiet.period;
+ return 0;
+}
+
+
+static int ieee80211_ioctl_set_radar_params(struct net_device *dev,
+ struct prism2_hostapd_param *param)
+{
+ /* struct ieee80211_conf *conf = ieee80211_get_hw_conf(dev); */
+ return 0;
+}
+
+
+static int ieee80211_ioctl_priv_hostapd(struct net_device *dev,
+ struct iw_point *p)
+{
+ struct prism2_hostapd_param *param;
+ int ret = 0;
+
+ if (p->length < sizeof(struct prism2_hostapd_param) ||
+ p->length > PRISM2_HOSTAPD_MAX_BUF_SIZE || !p->pointer) {
+ printk(KERN_DEBUG "%s: hostapd ioctl: ptr=%p len=%d min=%d "
+ "max=%d\n", dev->name, p->pointer, p->length,
+ (int)sizeof(struct prism2_hostapd_param),
+ PRISM2_HOSTAPD_MAX_BUF_SIZE);
+ return -EINVAL;
+ }
+
+ param = (struct prism2_hostapd_param *) kmalloc(p->length, GFP_KERNEL);
+ if (param == NULL)
+ return -ENOMEM;
+
+ if (copy_from_user(param, p->pointer, p->length)) {
+ ret = -EFAULT;
+ goto out;
+ }
+
+ switch (param->cmd) {
+ case PRISM2_HOSTAPD_FLUSH:
+ ret = ieee80211_ioctl_flush(dev, param);
+ break;
+ case PRISM2_HOSTAPD_ADD_STA:
+ ret = ieee80211_ioctl_add_sta(dev, param);
+ break;
+ case PRISM2_HOSTAPD_REMOVE_STA:
+ ret = ieee80211_ioctl_remove_sta(dev, param);
+ break;
+ case PRISM2_HOSTAPD_GET_INFO_STA:
+ ret = ieee80211_ioctl_get_info_sta(dev, param);
+ break;
+ case PRISM2_SET_ENCRYPTION:
+ ret = ieee80211_ioctl_set_encryption(dev, param, p->length);
+ break;
+ case PRISM2_GET_ENCRYPTION:
+ ret = ieee80211_ioctl_get_encryption(dev, param, p->length);
+ break;
+ case PRISM2_HOSTAPD_SET_FLAGS_STA:
+ ret = ieee80211_ioctl_set_flags_sta(dev, param);
+ break;
+ case PRISM2_HOSTAPD_SET_BEACON:
+ ret = ieee80211_ioctl_set_beacon(dev, param, p->length, 0);
+ break;
+ case PRISM2_HOSTAPD_GET_HW_FEATURES:
+ ret = ieee80211_ioctl_get_hw_features(dev, param, p->length);
+ break;
+ case PRISM2_HOSTAPD_SCAN:
+ ret = ieee80211_ioctl_scan(dev, param);
+ break;
+#ifdef CONFIG_HOSTAPD_WPA_TESTING
+ case PRISM2_HOSTAPD_WPA_TRIGGER:
+ ret = ieee80211_ioctl_wpa_trigger(dev, param);
+ break;
+#endif /* CONFIG_HOSTAPD_WPA_TESTING */
+ case PRISM2_HOSTAPD_SET_RATE_SETS:
+ ret = ieee80211_ioctl_set_rate_sets(dev, param, p->length);
+ break;
+ case PRISM2_HOSTAPD_ADD_IF:
+ ret = ieee80211_ioctl_add_if(dev, param, p->length);
+ break;
+ case PRISM2_HOSTAPD_REMOVE_IF:
+ ret = ieee80211_ioctl_remove_if(dev, param);
+ break;
+ case PRISM2_HOSTAPD_GET_DOT11COUNTERSTABLE:
+ ret = ieee80211_ioctl_get_dot11counterstable(dev, param);
+ break;
+ case PRISM2_HOSTAPD_GET_LOAD_STATS:
+ ret = ieee80211_ioctl_get_load_stats(dev, param);
+ break;
+ case PRISM2_HOSTAPD_SET_STA_VLAN:
+ ret = ieee80211_ioctl_set_sta_vlan(dev, param);
+ break;
+ case PRISM2_HOSTAPD_SET_GENERIC_INFO_ELEM:
+ ret = ieee80211_ioctl_set_generic_info_elem(dev, param,
+ p->length);
+ break;
+ case PRISM2_HOSTAPD_SET_CHANNEL_FLAG:
+ ret = ieee80211_ioctl_set_channel_flag(dev, param);
+ break;
+ case PRISM2_HOSTAPD_SET_REGULATORY_DOMAIN:
+ ret = ieee80211_ioctl_set_regulatory_domain(dev, param);
+ break;
+ case PRISM2_HOSTAPD_SET_TX_QUEUE_PARAMS:
+ ret = ieee80211_ioctl_set_tx_queue_params(dev, param);
+ break;
+ case PRISM2_HOSTAPD_SET_BSS:
+ ret = ieee80211_ioctl_set_bss(dev, param);
+ break;
+ case PRISM2_HOSTAPD_GET_TX_STATS:
+ ret = ieee80211_ioctl_get_tx_stats(dev, param);
+ break;
+ case PRISM2_HOSTAPD_UPDATE_IF:
+ ret = ieee80211_ioctl_update_if(dev, param, p->length);
+ break;
+ case PRISM2_HOSTAPD_SCAN_REQ:
+ ret = ieee80211_ioctl_scan_req(dev, param, p->length);
+ break;
+ case PRISM2_STA_GET_STATE:
+ ret = ieee80211_ioctl_sta_get_state(dev, param);
+ break;
+ case PRISM2_HOSTAPD_MLME:
+ ret = ieee80211_ioctl_mlme(dev, param);
+ break;
+ case PRISM2_HOSTAPD_FLUSH_IFS:
+ ret = ieee80211_ioctl_flush_ifs(dev, param);
+ break;
+ case PRISM2_HOSTAPD_SET_RADAR_PARAMS:
+ ret = ieee80211_ioctl_set_radar_params(dev, param);
+ break;
+ case PRISM2_HOSTAPD_SET_QUIET_PARAMS:
+ ret = ieee80211_ioctl_set_quiet_params(dev, param);
+ break;
+ default:
+ ret = -EOPNOTSUPP;
+ break;
+ }
+
+ if (copy_to_user(p->pointer, param, p->length))
+ ret = -EFAULT;
+
+ out:
+ kfree(param);
+
+ return ret;
+}
+
+
+static int ieee80211_ioctl_giwname(struct net_device *dev,
+ struct iw_request_info *info,
+ char *name, char *extra)
+{
+ struct ieee80211_local *local = dev->priv;
+
+ switch (local->conf.phymode) {
+ case MODE_IEEE80211A:
+ strcpy(name, "IEEE 802.11a");
+ break;
+ case MODE_IEEE80211B:
+ strcpy(name, "IEEE 802.11b");
+ break;
+ case MODE_IEEE80211G:
+ strcpy(name, "IEEE 802.11g");
+ break;
+ case MODE_ATHEROS_TURBO:
+ strcpy(name, "5GHz Turbo");
+ break;
+ default:
+ strcpy(name, "IEEE 802.11");
+ break;
+ }
+
+ return 0;
+}
+
+
+static int ieee80211_ioctl_giwrange(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_point *data, char *extra)
+{
+ struct iw_range *range = (struct iw_range *) extra;
+
+ data->length = sizeof(struct iw_range);
+ memset(range, 0, sizeof(struct iw_range));
+
+ range->we_version_compiled = WIRELESS_EXT;
+ range->we_version_source = 14;
+ range->retry_capa = IW_RETRY_LIMIT;
+ range->retry_flags = IW_RETRY_LIMIT;
+ range->min_retry = 0;
+ range->max_retry = 255;
+ range->min_rts = 0;
+ range->max_rts = 2347;
+ range->min_frag = 256;
+ range->max_frag = 2346;
+
+ return 0;
+}
+
+
+struct ieee80211_channel_range {
+ short start_freq;
+ short end_freq;
+ unsigned char power_level;
+ unsigned char antenna_max;
+};
+
+static const struct ieee80211_channel_range ieee80211_fcc_channels[] = {
+ { 2412, 2462, 27, 6 } /* IEEE 802.11b/g, channels 1..11 */,
+ { 5180, 5240, 17, 6 } /* IEEE 802.11a, channels 36..48 */,
+ { 5260, 5320, 23, 6 } /* IEEE 802.11a, channels 52..64 */,
+ { 5745, 5825, 30, 6 } /* IEEE 802.11a, channels 149..165, outdoor */,
+ { 0 }
+};
+
+static const struct ieee80211_channel_range ieee80211_mkk_channels[] = {
+ { 2412, 2472, 20, 6 } /* IEEE 802.11b/g, channels 1..13 */,
+ { 5170, 5240, 20, 6 } /* IEEE 802.11a, channels 34..48 */,
+ { 5260, 5320, 20, 6 } /* IEEE 802.11a, channels 52..64 */,
+ { 0 }
+};
+
+
+static const struct ieee80211_channel_range *channel_range =
+ ieee80211_fcc_channels;
+
+
+static void ieee80211_unmask_channel(struct net_device *dev, int mode,
+ struct ieee80211_channel *chan)
+{
+ int i;
+
+ chan->flag = 0;
+
+ if (ieee80211_regdom == 64 &&
+ (mode == MODE_ATHEROS_TURBO || mode == MODE_ATHEROS_TURBOG)) {
+ /* Do not allow Turbo modes in Japan. */
+ return;
+ }
+
+ for (i = 0; channel_range[i].start_freq; i++) {
+ const struct ieee80211_channel_range *r = &channel_range[i];
+ if (r->start_freq <= chan->freq && r->end_freq >= chan->freq) {
+ if (ieee80211_regdom == 64 && !ieee80211_japan_5ghz &&
+ chan->freq >= 5260 && chan->freq <= 5320) {
+ /*
+ * Skip new channels in Japan since the
+ * firmware was not marked having been upgraded
+ * by the vendor.
+ */
+ continue;
+ }
+
+ if (ieee80211_regdom == 0x10 &&
+ (chan->freq == 5190 || chan->freq == 5210 ||
+ chan->freq == 5230)) {
+ /* Skip MKK channels when in FCC domain. */
+ continue;
+ }
+
+ chan->flag |= IEEE80211_CHAN_W_SCAN |
+ IEEE80211_CHAN_W_ACTIVE_SCAN |
+ IEEE80211_CHAN_W_IBSS;
+ chan->power_level = r->power_level;
+ chan->antenna_max = r->antenna_max;
+
+ if (ieee80211_regdom == 64 &&
+ (chan->freq == 5170 || chan->freq == 5190 ||
+ chan->freq == 5210 || chan->freq == 5230)) {
+ /*
+ * New regulatory rules in Japan have backwards
+ * compatibility with old channels in 5.15-5.25
+ * GHz band, but the station is not allowed to
+ * use active scan on these old channels.
+ */
+ chan->flag &= ~IEEE80211_CHAN_W_ACTIVE_SCAN;
+ }
+
+ if (ieee80211_regdom == 64 &&
+ (chan->freq == 5260 || chan->freq == 5280 ||
+ chan->freq == 5300 || chan->freq == 5320)) {
+ /*
+ * IBSS is not allowed on 5.25-5.35 GHz band
+ * due to radar detection requirements.
+ */
+ chan->flag &= ~IEEE80211_CHAN_W_IBSS;
+ }
+
+ break;
+ }
+ }
+}
+
+
+static int ieee80211_unmask_channels(struct net_device *dev)
+{
+ struct ieee80211_local *local = dev->priv;
+ int m, c;
+
+ for (m = 0; m < local->hw->num_modes; m++) {
+ struct ieee80211_hw_modes *mode = &local->hw->modes[m];
+ for (c = 0; c < mode->num_channels; c++) {
+ ieee80211_unmask_channel(dev, mode->mode,
+ &mode->channels[c]);
+ }
+ }
+ return 0;
+}
+
+
+static int ieee80211_init_client(struct net_device *dev)
+{
+ if (ieee80211_regdom == 0x40)
+ channel_range = ieee80211_mkk_channels;
+ ieee80211_unmask_channels(dev);
+ ieee80211_ioctl_set_adm_status(dev, 1);
+ return 0;
+}
+
+
+static int ieee80211_is_client_mode(int iw_mode)
+{
+ return (iw_mode == IW_MODE_INFRA || iw_mode == IW_MODE_ADHOC);
+}
+
+
+static int ieee80211_ioctl_siwmode(struct net_device *dev,
+ struct iw_request_info *info,
+ __u32 *mode, char *extra)
+{
+ struct ieee80211_local *local = dev->priv;
+
+ if (!ieee80211_is_client_mode(local->conf.mode) &&
+ ieee80211_is_client_mode(*mode)) {
+ ieee80211_init_client(dev);
+ }
+ if (local->conf.mode != *mode) {
+ struct ieee80211_sub_if_data *sdata =
+ IEEE80211_DEV_TO_SUB_IF(dev);
+ sta_info_flush(local, NULL);
+ if (local->conf.mode == IW_MODE_ADHOC &&
+ sdata->type == IEEE80211_SUB_IF_TYPE_STA) {
+ /* Clear drop_unencrypted when leaving adhoc mode since
+ * only adhoc mode is using automatic setting for this
+ * in 80211.o. */
+ sdata->drop_unencrypted = 0;
+ }
+ if (*mode == IW_MODE_MASTER) {
+ /* AP mode does not currently use ACM bits to limit
+ * TX, so clear the bitfield here. */
+ local->wmm_acm = 0;
+ }
+ }
+ local->conf.mode = *mode;
+ return ieee80211_hw_config(dev);
+}
+
+
+static int ieee80211_ioctl_giwmode(struct net_device *dev,
+ struct iw_request_info *info,
+ __u32 *mode, char *extra)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct ieee80211_sub_if_data *sdata;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (sdata->type == IEEE80211_SUB_IF_TYPE_STA) {
+ if (local->conf.mode == IW_MODE_ADHOC)
+ *mode = IW_MODE_ADHOC;
+ else
+ *mode = IW_MODE_INFRA;
+ } else
+ *mode = local->conf.mode;
+ return 0;
+}
+
+
+int ieee80211_ioctl_siwfreq(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_freq *freq, char *extra)
+{
+ struct ieee80211_local *local = dev->priv;
+ int m, c, nfreq, set = 0;
+
+ /* freq->e == 0: freq->m = channel; otherwise freq = m * 10^e */
+ if (freq->e == 0)
+ nfreq = -1;
+ else {
+ int i, div = 1000000;
+ for (i = 0; i < freq->e; i++)
+ div /= 10;
+ if (div > 0)
+ nfreq = freq->m / div;
+ else
+ return -EINVAL;
+ }
+
+ for (m = 0; m < local->hw->num_modes; m++) {
+ struct ieee80211_hw_modes *mode = &local->hw->modes[m];
+ for (c = 0; c < mode->num_channels; c++) {
+ struct ieee80211_channel *chan = &mode->channels[c];
+ if (chan->flag & IEEE80211_CHAN_W_SCAN &&
+ ((freq->e == 0 && chan->chan == freq->m) ||
+ (freq->e > 0 && nfreq == chan->freq)) &&
+ (local->hw_modes & (1 << mode->mode))) {
+ /* Use next_mode as the mode preference to
+ * resolve non-unique channel numbers. */
+ if (set && mode->mode != local->next_mode)
+ continue;
+
+ local->conf.channel = chan->chan;
+ local->conf.channel_val = chan->val;
+ local->conf.power_level = chan->power_level;
+ local->conf.freq = chan->freq;
+ local->conf.phymode = mode->mode;
+ local->conf.antenna_max = chan->antenna_max;
+ set++;
+ }
+ }
+ }
+
+ if (set) {
+ local->sta_scanning = 0; /* Abort possible scan */
+ return ieee80211_hw_config(dev);
+ }
+
+ return -EINVAL;
+}
+
+
+static int ieee80211_ioctl_giwfreq(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_freq *freq, char *extra)
+{
+ struct ieee80211_local *local = dev->priv;
+
+ /* TODO: in station mode (Managed/Ad-hoc) might need to poll low-level
+ * driver for the current channel with firmware-based management */
+
+ freq->m = local->conf.freq;
+ freq->e = 6;
+
+ return 0;
+}
+
+
+static int ieee80211_ioctl_siwessid(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_point *data, char *ssid)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct ieee80211_sub_if_data *sdata;
+ size_t len = data->length;
+
+ /* iwconfig uses nul termination in SSID.. */
+ if (len > 0 && ssid[len - 1] == '\0')
+ len--;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (sdata->type == IEEE80211_SUB_IF_TYPE_STA)
+ return ieee80211_sta_set_ssid(dev, ssid, len);
+
+ kfree(local->conf.ssid);
+ local->conf.ssid = kmalloc(len + 1, GFP_KERNEL);
+ if (local->conf.ssid == NULL)
+ return -ENOMEM;
+ memcpy(local->conf.ssid, ssid, len);
+ local->conf.ssid[len] = '\0';
+ local->conf.ssid_len = len;
+ return ieee80211_hw_config(dev);
+}
+
+
+static int ieee80211_ioctl_giwessid(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_point *data, char *ssid)
+{
+ struct ieee80211_local *local = dev->priv;
+ size_t len;
+
+ struct ieee80211_sub_if_data *sdata;
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (sdata->type == IEEE80211_SUB_IF_TYPE_STA) {
+ int res = ieee80211_sta_get_ssid(dev, ssid, &len);
+ if (res == 0)
+ data->length = len;
+ return res;
+ }
+
+ len = local->conf.ssid_len;
+ if (len > IW_ESSID_MAX_SIZE)
+ len = IW_ESSID_MAX_SIZE;
+ memcpy(ssid, local->conf.ssid, len);
+ data->length = len;
+ return 0;
+}
+
+
+static int ieee80211_ioctl_siwap(struct net_device *dev,
+ struct iw_request_info *info,
+ struct sockaddr *ap_addr, char *extra)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct ieee80211_sub_if_data *sdata;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (sdata->type == IEEE80211_SUB_IF_TYPE_STA) {
+ int changed_bssid = 0;
+ if (memcmp(local->conf.client_bssid, (u8 *) &ap_addr->sa_data,
+ ETH_ALEN) != 0)
+ changed_bssid = 1;
+ memcpy(local->conf.client_bssid, (u8 *) &ap_addr->sa_data,
+ ETH_ALEN);
+ if (changed_bssid && ieee80211_hw_config(dev)) {
+ printk(KERN_DEBUG "%s: Failed to config new BSSID to "
+ "the low-level driver\n", dev->name);
+ }
+ return ieee80211_sta_set_bssid(dev, (u8 *) &ap_addr->sa_data);
+ }
+
+ return -EOPNOTSUPP;
+}
+
+
+static int ieee80211_ioctl_giwap(struct net_device *dev,
+ struct iw_request_info *info,
+ struct sockaddr *ap_addr, char *extra)
+{
+ struct ieee80211_sub_if_data *sdata;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (sdata->type == IEEE80211_SUB_IF_TYPE_STA) {
+ ap_addr->sa_family = ARPHRD_ETHER;
+ memcpy(&ap_addr->sa_data, sdata->u.sta.bssid, ETH_ALEN);
+ return 0;
+ }
+
+ return -EOPNOTSUPP;
+}
+
+
+static int ieee80211_ioctl_siwscan(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_point *data, char *extra)
+{
+ struct ieee80211_local *local = dev->priv;
+ u8 *ssid = NULL;
+ size_t ssid_len = 0;
+
+ if (local->scan_flags & IEEE80211_SCAN_MATCH_SSID) {
+ ssid = local->conf.ssid;
+ ssid_len = local->conf.ssid_len;
+ }
+ return ieee80211_sta_req_scan(dev, ssid, ssid_len);
+}
+
+
+static int ieee80211_ioctl_giwscan(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_point *data, char *extra)
+{
+ int res;
+ struct ieee80211_local *local = dev->priv;
+ if (local->sta_scanning)
+ return -EAGAIN;
+ res = ieee80211_sta_scan_results(dev, extra, IW_SCAN_MAX_DATA);
+ if (res >= 0) {
+ data->length = res;
+ return 0;
+ }
+ data->length = 0;
+ return res;
+}
+
+
+static int ieee80211_ioctl_siwrts(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_param *rts, char *extra)
+{
+ struct ieee80211_local *local = dev->priv;
+
+ if (rts->disabled)
+ local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
+ else if (rts->value < 0 || rts->value > IEEE80211_MAX_RTS_THRESHOLD)
+ return -EINVAL;
+ else
+ local->rts_threshold = rts->value;
+
+ /* If the wlan card performs RTS/CTS in hardware/firmware,
+ * configure it here */
+
+ if (local->hw->set_rts_threshold) {
+ local->hw->set_rts_threshold(dev, local->rts_threshold);
+ }
+
+ return 0;
+}
+
+static int ieee80211_ioctl_giwrts(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_param *rts, char *extra)
+{
+ struct ieee80211_local *local = dev->priv;
+
+ rts->value = local->rts_threshold;
+ rts->disabled = (rts->value >= IEEE80211_MAX_RTS_THRESHOLD);
+ rts->fixed = 1;
+
+ return 0;
+}
+
+
+static int ieee80211_ioctl_siwfrag(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_param *frag, char *extra)
+{
+ struct ieee80211_local *local = dev->priv;
+
+ if (frag->disabled)
+ local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
+ else if (frag->value < 256 ||
+ frag->value > IEEE80211_MAX_FRAG_THRESHOLD)
+ return -EINVAL;
+ else {
+ /* Fragment length must be even, so strip LSB. */
+ local->fragmentation_threshold = frag->value & ~0x1;
+ }
+
+ /* If the wlan card performs fragmentation in hardware/firmware,
+ * configure it here */
+
+ if (local->hw->set_frag_threshold) {
+ local->hw->set_frag_threshold(
+ dev, local->fragmentation_threshold);
+ }
+
+ return 0;
+}
+
+static int ieee80211_ioctl_giwfrag(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_param *frag, char *extra)
+{
+ struct ieee80211_local *local = dev->priv;
+
+ frag->value = local->fragmentation_threshold;
+ frag->disabled = (frag->value >= IEEE80211_MAX_RTS_THRESHOLD);
+ frag->fixed = 1;
+
+ return 0;
+}
+
+
+static int ieee80211_ioctl_siwretry(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_param *retry, char *extra)
+{
+ struct ieee80211_local *local = dev->priv;
+
+ if (retry->disabled ||
+ (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
+ return -EINVAL;
+
+ if (retry->flags & IW_RETRY_MAX)
+ local->long_retry_limit = retry->value;
+ else if (retry->flags & IW_RETRY_MIN)
+ local->short_retry_limit = retry->value;
+ else {
+ local->long_retry_limit = retry->value;
+ local->short_retry_limit = retry->value;
+ }
+
+ if (local->hw->set_retry_limit) {
+ return local->hw->set_retry_limit(
+ dev, local->short_retry_limit,
+ local->long_retry_limit);
+ }
+
+ return 0;
+}
+
+
+static int ieee80211_ioctl_giwretry(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_param *retry, char *extra)
+{
+ struct ieee80211_local *local = dev->priv;
+
+ retry->disabled = 0;
+ if ((retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
+ return -EINVAL;
+ if (retry->flags & IW_RETRY_MAX) {
+ retry->flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
+ retry->value = local->long_retry_limit;
+ } else {
+ retry->flags = IW_RETRY_LIMIT;
+ retry->value = local->short_retry_limit;
+ if (local->long_retry_limit != local->short_retry_limit)
+ retry->flags |= IW_RETRY_MIN;
+ }
+
+ return 0;
+}
+
+
+static void ieee80211_ioctl_unmask_channels(struct ieee80211_local *local)
+{
+ int m, c;
+
+ for (m = 0; m < local->hw->num_modes; m++) {
+ struct ieee80211_hw_modes *mode = &local->hw->modes[m];
+ for (c = 0; c < mode->num_channels; c++) {
+ struct ieee80211_channel *chan = &mode->channels[c];
+ chan->flag |= IEEE80211_CHAN_W_SCAN;
+ }
+ }
+}
+
+
+static int ieee80211_ioctl_test_mode(struct net_device *dev, int mode)
+{
+ struct ieee80211_local *local = dev->priv;
+ int ret = -EOPNOTSUPP;
+
+ if (mode == IEEE80211_TEST_UNMASK_CHANNELS) {
+ ieee80211_ioctl_unmask_channels(local);
+ ret = 0;
+ }
+
+ if (local->hw->test_mode)
+ ret = local->hw->test_mode(dev, mode);
+
+ return ret;
+}
+
+
+static int ieee80211_ioctl_clear_keys(struct net_device *dev)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct ieee80211_key_conf key;
+ struct list_head *ptr;
+ int i;
+ u8 addr[ETH_ALEN];
+ struct ieee80211_key_conf *keyconf;
+
+ memset(addr, 0xff, ETH_ALEN);
+ list_for_each(ptr, &local->sub_if_list) {
+ struct ieee80211_sub_if_data *sdata =
+ list_entry(ptr, struct ieee80211_sub_if_data, list);
+ for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
+ keyconf = NULL;
+ if (sdata->keys[i] &&
+ !sdata->keys[i]->force_sw_encrypt &&
+ local->hw->set_key &&
+ (keyconf = ieee80211_key_data2conf(local,
+ sdata->keys[i]))
+ != NULL)
+ local->hw->set_key(dev, DISABLE_KEY, addr,
+ keyconf, 0);
+ kfree(keyconf);
+ kfree(sdata->keys[i]);
+ sdata->keys[i] = NULL;
+ }
+ sdata->default_key = NULL;
+ }
+
+ spin_lock_bh(&local->sta_lock);
+ list_for_each(ptr, &local->sta_list) {
+ struct sta_info *sta =
+ list_entry(ptr, struct sta_info, list);
+ keyconf = NULL;
+ if (sta->key && !sta->key->force_sw_encrypt &&
+ local->hw->set_key &&
+ (keyconf = ieee80211_key_data2conf(local, sta->key))
+ != NULL)
+ local->hw->set_key(dev, DISABLE_KEY, sta->addr,
+ keyconf, sta->aid);
+ kfree(keyconf);
+ kfree(sta->key);
+ sta->key = NULL;
+ }
+ spin_unlock_bh(&local->sta_lock);
+
+
+ memset(&key, 0, sizeof(key));
+ if (local->hw->set_key &&
+ local->hw->set_key(dev, REMOVE_ALL_KEYS, NULL,
+ &key, 0))
+ printk(KERN_DEBUG "%s: failed to remove hwaccel keys\n",
+ dev->name);
+
+ return 0;
+}
+
+
+static int
+ieee80211_ioctl_force_unicast_rate(struct net_device *dev,
+ struct ieee80211_sub_if_data *sdata,
+ int rate)
+{
+ struct ieee80211_local *local = dev->priv;
+ int i;
+
+ if (sdata->type != IEEE80211_SUB_IF_TYPE_NORM)
+ return -ENOENT;
+
+ if (rate == 0) {
+ sdata->u.norm.force_unicast_rateidx = -1;
+ return 0;
+ }
+
+ for (i = 0; i < local->num_curr_rates; i++) {
+ if (local->curr_rates[i].rate == rate) {
+ sdata->u.norm.force_unicast_rateidx = i;
+ return 0;
+ }
+ }
+ return -EINVAL;
+}
+
+
+static int
+ieee80211_ioctl_max_ratectrl_rate(struct net_device *dev,
+ struct ieee80211_sub_if_data *sdata,
+ int rate)
+{
+ struct ieee80211_local *local = dev->priv;
+ int i;
+
+ if (sdata->type != IEEE80211_SUB_IF_TYPE_NORM)
+ return -ENOENT;
+
+ if (rate == 0) {
+ sdata->u.norm.max_ratectrl_rateidx = -1;
+ return 0;
+ }
+
+ for (i = 0; i < local->num_curr_rates; i++) {
+ if (local->curr_rates[i].rate == rate) {
+ sdata->u.norm.max_ratectrl_rateidx = i;
+ return 0;
+ }
+ }
+ return -EINVAL;
+}
+
+
+static void ieee80211_key_enable_hwaccel(struct ieee80211_local *local,
+ struct ieee80211_key *key)
+{
+ struct ieee80211_key_conf *keyconf;
+ u8 addr[ETH_ALEN];
+
+ if (key == NULL || key->alg != ALG_WEP || !key->force_sw_encrypt ||
+ local->hw->device_hides_wep)
+ return;
+
+ memset(addr, 0xff, ETH_ALEN);
+ keyconf = ieee80211_key_data2conf(local, key);
+ if (keyconf && local->hw->set_key &&
+ local->hw->set_key(local->mdev, SET_KEY, addr, keyconf, 0) == 0) {
+ key->force_sw_encrypt = keyconf->force_sw_encrypt;
+ key->hw_key_idx = keyconf->hw_key_idx;
+ }
+ kfree(keyconf);
+}
+
+
+static void ieee80211_key_disable_hwaccel(struct ieee80211_local *local,
+ struct ieee80211_key *key)
+{
+ struct ieee80211_key_conf *keyconf;
+ u8 addr[ETH_ALEN];
+
+ if (key == NULL || key->alg != ALG_WEP || key->force_sw_encrypt ||
+ local->hw->device_hides_wep)
+ return;
+
+ memset(addr, 0xff, ETH_ALEN);
+ keyconf = ieee80211_key_data2conf(local, key);
+ if (keyconf && local->hw->set_key)
+ local->hw->set_key(local->mdev, DISABLE_KEY, addr, keyconf, 0);
+ kfree(keyconf);
+ key->force_sw_encrypt = 1;
+}
+
+
+static int ieee80211_ioctl_default_wep_only(struct ieee80211_local *local,
+ int value)
+{
+ int i;
+ struct list_head *ptr;
+
+ local->default_wep_only = value;
+ list_for_each(ptr, &local->sub_if_list) {
+ struct ieee80211_sub_if_data *sdata =
+ list_entry(ptr, struct ieee80211_sub_if_data, list);
+ for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
+ if (value) {
+ ieee80211_key_enable_hwaccel(local,
+ sdata->keys[i]);
+ } else {
+ ieee80211_key_disable_hwaccel(local,
+ sdata->keys[i]);
+ }
+ }
+ }
+
+ return 0;
+}
+
+
+static int ieee80211_ioctl_prism2_param(struct net_device *dev,
+ struct iw_request_info *info,
+ void *wrqu, char *extra)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct ieee80211_sub_if_data *sdata;
+ int *i = (int *) extra;
+ int param = *i;
+ int value = *(i + 1);
+ int ret = 0;
+
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ switch (param) {
+ case PRISM2_PARAM_HOST_ENCRYPT:
+ case PRISM2_PARAM_HOST_DECRYPT:
+ /* TODO: implement these; return success now to prevent
+ * hostapd from aborting */
+ break;
+
+ case PRISM2_PARAM_BEACON_INT:
+ local->conf.beacon_int = value;
+ if (ieee80211_hw_config(dev))
+ ret = -EINVAL;
+ break;
+
+ case PRISM2_PARAM_AP_BRIDGE_PACKETS:
+ local->bridge_packets = value;
+ break;
+
+ case PRISM2_PARAM_AP_AUTH_ALGS:
+ if (sdata->type == IEEE80211_SUB_IF_TYPE_STA) {
+ sdata->u.sta.auth_algs = value;
+ } else
+ ret = -EOPNOTSUPP;
+ break;
+
+ case PRISM2_PARAM_DTIM_PERIOD:
+ if (value < 1)
+ ret = -EINVAL;
+ else if (sdata->type != IEEE80211_SUB_IF_TYPE_NORM)
+ ret = -ENOENT;
+ else
+ sdata->u.norm.dtim_period = value;
+ break;
+
+ case PRISM2_PARAM_IEEE_802_1X:
+ sdata->ieee802_1x = value;
+ if (local->hw->set_ieee8021x &&
+ local->hw->set_ieee8021x(dev, value))
+ printk(KERN_DEBUG "%s: failed to set IEEE 802.1X (%d) "
+ "for low-level driver\n", dev->name, value);
+ break;
+
+ case PRISM2_PARAM_CTS_PROTECT_ERP_FRAMES:
+ local->cts_protect_erp_frames = value;
+ break;
+
+ case PRISM2_PARAM_DROP_UNENCRYPTED:
+ sdata->drop_unencrypted = value;
+ break;
+
+ case PRISM2_PARAM_PREAMBLE:
+ local->short_preamble = value;
+ break;
+
+ case PRISM2_PARAM_RATE_LIMIT_BURST:
+ local->rate_limit_burst = value;
+ local->rate_limit_bucket = value;
+ break;
+
+ case PRISM2_PARAM_RATE_LIMIT:
+ /* number of packets (tokens) allowed per second */
+ if (!local->rate_limit && value) {
+ if (!local->rate_limit_burst) local->rate_limit_burst =
+ value;
+ local->rate_limit_bucket = local->rate_limit_burst;
+ local->rate_limit_timer.expires = jiffies + HZ;
+ add_timer(&local->rate_limit_timer);
+ } else if (local->rate_limit && !value) {
+ del_timer_sync(&local->rate_limit_timer);
+ }
+ local->rate_limit = value;
+ break;
+
+ case PRISM2_PARAM_STAT_TIME:
+ if (!local->stat_time && value) {
+ local->stat_timer.expires = jiffies + HZ * value / 100;
+ add_timer(&local->stat_timer);
+ } else if (local->stat_time && !value) {
+ del_timer_sync(&local->stat_timer);
+ }
+ local->stat_time = value;
+ break;
+ case PRISM2_PARAM_SHORT_SLOT_TIME:
+ local->conf.short_slot_time = value;
+ if (ieee80211_hw_config(dev))
+ ret = -EINVAL;
+ break;
+
+ case PRISM2_PARAM_PRIVACY_INVOKED:
+ if (local->hw->set_privacy_invoked)
+ ret = local->hw->set_privacy_invoked(dev, value);
+ break;
+
+ case PRISM2_PARAM_TEST_MODE:
+ ret = ieee80211_ioctl_test_mode(dev, value);
+ break;
+
+ case PRISM2_PARAM_NEXT_MODE:
+ local->next_mode = value;
+ break;
+
+ case PRISM2_PARAM_CLEAR_KEYS:
+ ret = ieee80211_ioctl_clear_keys(dev);
+ break;
+
+ case PRISM2_PARAM_ADM_STATUS:
+ ret = ieee80211_ioctl_set_adm_status(dev, value);
+ break;
+
+ case PRISM2_PARAM_ANTENNA_SEL:
+ local->conf.antenna_sel = value;
+ if (ieee80211_hw_config(dev))
+ ret = -EINVAL;
+ break;
+
+ case PRISM2_PARAM_CALIB_INT:
+ local->conf.calib_int = value;
+ if (ieee80211_hw_config(dev))
+ ret = -EINVAL;
+ break;
+
+ case PRISM2_PARAM_ANTENNA_MODE:
+ local->conf.antenna_mode = value;
+ if (ieee80211_hw_config(dev))
+ ret = -EINVAL;
+ break;
+
+ case PRISM2_PARAM_BROADCAST_SSID:
+ if ((value < 0) || (value > 1))
+ ret = -EINVAL;
+ else
+ local->conf.ssid_hidden = value;
+ break;
+
+ case PRISM2_PARAM_STA_ANTENNA_SEL:
+ local->sta_antenna_sel = value;
+ break;
+
+ case PRISM2_PARAM_FORCE_UNICAST_RATE:
+ ret = ieee80211_ioctl_force_unicast_rate(dev, sdata, value);
+ break;
+
+ case PRISM2_PARAM_MAX_RATECTRL_RATE:
+ ret = ieee80211_ioctl_max_ratectrl_rate(dev, sdata, value);
+ break;
+
+ case PRISM2_PARAM_RATE_CTRL_NUM_UP:
+ local->rate_ctrl_num_up = value;
+ break;
+
+ case PRISM2_PARAM_RATE_CTRL_NUM_DOWN:
+ local->rate_ctrl_num_down = value;
+ break;
+
+ case PRISM2_PARAM_TX_POWER_REDUCTION:
+ if (value < 0)
+ ret = -EINVAL;
+ else
+ local->conf.tx_power_reduction = value;
+ break;
+
+ case PRISM2_PARAM_EAPOL:
+ sdata->eapol = value;
+ break;
+
+ case PRISM2_PARAM_KEY_TX_RX_THRESHOLD:
+ local->key_tx_rx_threshold = value;
+ break;
+
+ case PRISM2_PARAM_KEY_INDEX:
+ if (value < 0 || value >= NUM_DEFAULT_KEYS)
+ ret = -EINVAL;
+ else if (sdata->keys[value] == NULL)
+ ret = -ENOENT;
+ else
+ sdata->default_key = sdata->keys[value];
+ break;
+
+ case PRISM2_PARAM_DEFAULT_WEP_ONLY:
+ ret = ieee80211_ioctl_default_wep_only(local, value);
+ break;
+
+ case PRISM2_PARAM_WIFI_WME_NOACK_TEST:
+ local->wifi_wme_noack_test = value;
+ break;
+
+
+
+ case PRISM2_PARAM_ALLOW_BROADCAST_ALWAYS:
+ local->allow_broadcast_always = value;
+ break;
+
+ case PRISM2_PARAM_SCAN_FLAGS:
+ local->scan_flags = value;
+ break;
+
+ case PRISM2_PARAM_MIXED_CELL:
+ if (sdata->type != IEEE80211_SUB_IF_TYPE_STA)
+ ret = -EINVAL;
+ else
+ sdata->u.sta.mixed_cell = !!value;
+ break;
+
+ case PRISM2_PARAM_KEY_MGMT:
+ if (sdata->type != IEEE80211_SUB_IF_TYPE_STA)
+ ret = -EINVAL;
+ else
+ sdata->u.sta.key_mgmt = value;
+ break;
+
+ case PRISM2_PARAM_HW_MODES:
+ local->hw_modes = value;
+ break;
+
+ case PRISM2_PARAM_CREATE_IBSS:
+ if (sdata->type != IEEE80211_SUB_IF_TYPE_STA)
+ ret = -EINVAL;
+ else
+ sdata->u.sta.create_ibss = !!value;
+ break;
+ case PRISM2_PARAM_WMM_ENABLED:
+ if (sdata->type != IEEE80211_SUB_IF_TYPE_STA)
+ ret = -EINVAL;
+ else
+ sdata->u.sta.wmm_enabled = !!value;
+ break;
+ case PRISM2_PARAM_RADAR_DETECT:
+ local->conf.radar_detect = value;
+ break;
+ case PRISM2_PARAM_SPECTRUM_MGMT:
+ local->conf.spect_mgmt = value;
+ break;
+ default:
+ ret = -EOPNOTSUPP;
+ break;
+ }
+
+ return ret;
+}
+
+
+static int ieee80211_ioctl_get_prism2_param(struct net_device *dev,
+ struct iw_request_info *info,
+ void *wrqu, char *extra)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct ieee80211_sub_if_data *sdata;
+ int *param = (int *) extra;
+ int ret = 0;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ switch (*param) {
+ case PRISM2_PARAM_BEACON_INT:
+ *param = local->conf.beacon_int;
+ break;
+
+ case PRISM2_PARAM_AP_BRIDGE_PACKETS:
+ *param = local->bridge_packets;
+ break;
+
+ case PRISM2_PARAM_AP_AUTH_ALGS:
+ if (sdata->type == IEEE80211_SUB_IF_TYPE_STA) {
+ *param = sdata->u.sta.auth_algs;
+ } else
+ ret = -EOPNOTSUPP;
+ break;
+
+ case PRISM2_PARAM_DTIM_PERIOD:
+ if (sdata->type != IEEE80211_SUB_IF_TYPE_NORM)
+ ret = -ENOENT;
+ else
+ *param = sdata->u.norm.dtim_period;
+ break;
+
+ case PRISM2_PARAM_IEEE_802_1X:
+ *param = sdata->ieee802_1x;
+ break;
+
+ case PRISM2_PARAM_CTS_PROTECT_ERP_FRAMES:
+ *param = local->cts_protect_erp_frames;
+ break;
+
+ case PRISM2_PARAM_DROP_UNENCRYPTED:
+ *param = sdata->drop_unencrypted;
+ break;
+
+ case PRISM2_PARAM_PREAMBLE:
+ *param = local->short_preamble;
+ break;
+
+ case PRISM2_PARAM_RATE_LIMIT_BURST:
+ *param = local->rate_limit_burst;
+ break;
+
+ case PRISM2_PARAM_RATE_LIMIT:
+ *param = local->rate_limit;
+ break;
+
+ case PRISM2_PARAM_STAT_TIME:
+ *param = local->stat_time;
+ break;
+ case PRISM2_PARAM_SHORT_SLOT_TIME:
+ *param = local->conf.short_slot_time;
+ break;
+
+ case PRISM2_PARAM_NEXT_MODE:
+ *param = local->next_mode;
+ break;
+
+ case PRISM2_PARAM_ANTENNA_SEL:
+ *param = local->conf.antenna_sel;
+ break;
+
+ case PRISM2_PARAM_CALIB_INT:
+ *param = local->conf.calib_int;
+ break;
+
+ case PRISM2_PARAM_ANTENNA_MODE:
+ *param = local->conf.antenna_mode;
+ break;
+
+ case PRISM2_PARAM_BROADCAST_SSID:
+ *param = local->conf.ssid_hidden;
+ break;
+
+ case PRISM2_PARAM_STA_ANTENNA_SEL:
+ *param = local->sta_antenna_sel;
+ break;
+
+ case PRISM2_PARAM_RATE_CTRL_NUM_UP:
+ *param = local->rate_ctrl_num_up;
+ break;
+
+ case PRISM2_PARAM_RATE_CTRL_NUM_DOWN:
+ *param = local->rate_ctrl_num_down;
+ break;
+
+ case PRISM2_PARAM_TX_POWER_REDUCTION:
+ *param = local->conf.tx_power_reduction;
+ break;
+
+ case PRISM2_PARAM_EAPOL:
+ *param = sdata->eapol;
+ break;
+
+ case PRISM2_PARAM_KEY_TX_RX_THRESHOLD:
+ *param = local->key_tx_rx_threshold;
+ break;
+
+ case PRISM2_PARAM_KEY_INDEX:
+ if (sdata->default_key == NULL)
+ ret = -ENOENT;
+ else if (sdata->default_key == sdata->keys[0])
+ *param = 0;
+ else if (sdata->default_key == sdata->keys[1])
+ *param = 1;
+ else if (sdata->default_key == sdata->keys[2])
+ *param = 2;
+ else if (sdata->default_key == sdata->keys[3])
+ *param = 3;
+ else
+ ret = -ENOENT;
+ break;
+
+ case PRISM2_PARAM_DEFAULT_WEP_ONLY:
+ *param = local->default_wep_only;
+ break;
+
+ case PRISM2_PARAM_WIFI_WME_NOACK_TEST:
+ *param = local->wifi_wme_noack_test;
+ break;
+
+
+
+ case PRISM2_PARAM_ALLOW_BROADCAST_ALWAYS:
+ *param = local->allow_broadcast_always;
+ break;
+
+ case PRISM2_PARAM_SCAN_FLAGS:
+ *param = local->scan_flags;
+ break;
+
+ case PRISM2_PARAM_HW_MODES:
+ *param = local->hw_modes;
+ break;
+
+ case PRISM2_PARAM_CREATE_IBSS:
+ if (sdata->type != IEEE80211_SUB_IF_TYPE_STA)
+ ret = -EINVAL;
+ else
+ *param = !!sdata->u.sta.create_ibss;
+ break;
+
+ case PRISM2_PARAM_MIXED_CELL:
+ if (sdata->type != IEEE80211_SUB_IF_TYPE_STA)
+ ret = -EINVAL;
+ else
+ *param = !!sdata->u.sta.mixed_cell;
+ break;
+
+ case PRISM2_PARAM_KEY_MGMT:
+ if (sdata->type != IEEE80211_SUB_IF_TYPE_STA)
+ ret = -EINVAL;
+ else
+ *param = sdata->u.sta.key_mgmt;
+ break;
+ case PRISM2_PARAM_WMM_ENABLED:
+ if (sdata->type != IEEE80211_SUB_IF_TYPE_STA)
+ ret = -EINVAL;
+ else
+ *param = !!sdata->u.sta.wmm_enabled;
+ break;
+
+ default:
+ ret = -EOPNOTSUPP;
+ break;
+ }
+
+ return ret;
+}
+
+
+static int ieee80211_ioctl_test_param(struct net_device *dev,
+ struct iw_request_info *info,
+ void *wrqu, char *extra)
+{
+ struct ieee80211_local *local = dev->priv;
+ int *i = (int *) extra;
+ int param = *i;
+ int value = *(i + 1);
+
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+
+ if (local->hw->test_param)
+ return local->hw->test_param(local->mdev, param, value);
+
+ return -EOPNOTSUPP;
+}
+
+
+static const struct iw_priv_args ieee80211_ioctl_priv[] = {
+ { PRISM2_IOCTL_PRISM2_PARAM,
+ IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 2, 0, "param" },
+ { PRISM2_IOCTL_GET_PRISM2_PARAM,
+ IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
+ IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "get_param" },
+ { PRISM2_IOCTL_TEST_PARAM,
+ IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 2, 0, "test_param" },
+};
+
+
+static int ieee80211_ioctl_giwpriv(struct net_device *dev,
+ struct iw_point *data)
+{
+
+ if (!data->pointer ||
+ !access_ok(VERIFY_WRITE, data->pointer,
+ sizeof(ieee80211_ioctl_priv)))
+ return -EINVAL;
+
+ data->length = sizeof(ieee80211_ioctl_priv) /
+ sizeof(ieee80211_ioctl_priv[0]);
+ if (copy_to_user(data->pointer, ieee80211_ioctl_priv,
+ sizeof(ieee80211_ioctl_priv)))
+ return -EINVAL;
+ return 0;
+}
+
+
+int ieee80211_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
+{
+ struct iwreq *wrq = (struct iwreq *) rq;
+ int ret = 0;
+ char ssid[IW_ESSID_MAX_SIZE + 1];
+
+ switch (cmd) {
+ case SIOCGIWNAME:
+ ret = ieee80211_ioctl_giwname(dev, NULL, (char *) &wrq->u,
+ NULL);
+ break;
+ case SIOCSIWESSID:
+ if (!wrq->u.essid.pointer)
+ ret = -EINVAL;
+ else if (wrq->u.essid.length > IW_ESSID_MAX_SIZE)
+ ret = -E2BIG;
+ else {
+ if (copy_from_user(ssid, wrq->u.essid.pointer,
+ wrq->u.essid.length)) {
+ ret = -EFAULT;
+ break;
+ }
+ ret = ieee80211_ioctl_siwessid(dev, NULL,
+ &wrq->u.essid, ssid);
+ }
+ break;
+ case SIOCGIWESSID:
+ if (!wrq->u.essid.pointer) {
+ ret = -EINVAL;
+ } else {
+ memset(ssid, 0, IW_ESSID_MAX_SIZE + 1);
+ ret = ieee80211_ioctl_giwessid(dev, NULL,
+ &wrq->u.essid, ssid);
+ if (copy_to_user(wrq->u.essid.pointer, ssid,
+ wrq->u.essid.length)) {
+ ret = -EFAULT;
+ break;
+ }
+ }
+ break;
+
+ case SIOCGIWRANGE:
+ {
+ struct iw_range range;
+ if (!access_ok(VERIFY_WRITE, wrq->u.data.pointer,
+ sizeof(range))) {
+ ret = -EFAULT;
+ break;
+ }
+ ret = ieee80211_ioctl_giwrange(dev, NULL, &wrq->u.data,
+ (char *) &range);
+ if (ret)
+ break;
+ if (copy_to_user(wrq->u.data.pointer, &range, sizeof(range)))
+ ret = -EFAULT;
+ break;
+ }
+
+ case SIOCSIWAP:
+ ret = ieee80211_ioctl_siwap(dev, NULL, &wrq->u.ap_addr, NULL);
+ break;
+ case SIOCGIWAP:
+ ret = ieee80211_ioctl_giwap(dev, NULL, &wrq->u.ap_addr, NULL);
+ break;
+ case SIOCSIWSCAN:
+ ret = ieee80211_ioctl_siwscan(dev, NULL, &wrq->u.data, NULL);
+ break;
+ case SIOCGIWSCAN:
+ {
+ char *buf = kmalloc(IW_SCAN_MAX_DATA, GFP_KERNEL);
+ if (buf == NULL) {
+ ret = -ENOMEM;
+ break;
+ }
+ ret = ieee80211_ioctl_giwscan(dev, NULL, &wrq->u.data, buf);
+ if (ret == 0 &&
+ copy_to_user(wrq->u.data.pointer, buf, wrq->u.data.length))
+ ret = -EFAULT;
+ kfree(buf);
+ break;
+ }
+
+ case SIOCSIWFREQ:
+ ret = ieee80211_ioctl_siwfreq(dev, NULL, &wrq->u.freq, NULL);
+ break;
+ case SIOCGIWFREQ:
+ ret = ieee80211_ioctl_giwfreq(dev, NULL, &wrq->u.freq, NULL);
+ break;
+ case SIOCSIWMODE:
+ ret = ieee80211_ioctl_siwmode(dev, NULL, &wrq->u.mode, NULL);
+ break;
+ case SIOCGIWMODE:
+ ret = ieee80211_ioctl_giwmode(dev, NULL, &wrq->u.mode, NULL);
+ break;
+
+ case SIOCSIWRTS:
+ ret = ieee80211_ioctl_siwrts(dev, NULL, &wrq->u.rts, NULL);
+ break;
+ case SIOCGIWRTS:
+ ret = ieee80211_ioctl_giwrts(dev, NULL, &wrq->u.rts, NULL);
+ break;
+
+ case SIOCSIWFRAG:
+ ret = ieee80211_ioctl_siwfrag(dev, NULL, &wrq->u.frag, NULL);
+ break;
+ case SIOCGIWFRAG:
+ ret = ieee80211_ioctl_giwfrag(dev, NULL, &wrq->u.frag, NULL);
+ break;
+
+ case SIOCSIWRETRY:
+ ret = ieee80211_ioctl_siwretry(dev, NULL, &wrq->u.retry, NULL);
+ break;
+ case SIOCGIWRETRY:
+ ret = ieee80211_ioctl_giwretry(dev, NULL, &wrq->u.retry, NULL);
+ break;
+
+ case PRISM2_IOCTL_PRISM2_PARAM:
+ ret = ieee80211_ioctl_prism2_param(dev, NULL, &wrq->u,
+ (char *) &wrq->u);
+ break;
+ case PRISM2_IOCTL_GET_PRISM2_PARAM:
+ ret = ieee80211_ioctl_get_prism2_param(dev, NULL, &wrq->u,
+ (char *) &wrq->u);
+ break;
+ case PRISM2_IOCTL_TEST_PARAM:
+ ret = ieee80211_ioctl_test_param(dev, NULL, &wrq->u,
+ (char *) &wrq->u);
+ break;
+ case PRISM2_IOCTL_HOSTAPD:
+ if (!capable(CAP_NET_ADMIN)) ret = -EPERM;
+ else ret = ieee80211_ioctl_priv_hostapd(dev, &wrq->u.data);
+ break;
+ case SIOCGIWPRIV:
+ ret = ieee80211_ioctl_giwpriv(dev, &wrq->u.data);
+ break;
+ default:
+ ret = -EOPNOTSUPP;
+ break;
+ }
+
+ return ret;
+}
--- /dev/null
+/*
+ * Copyright 2002-2004, Instant802 Networks, Inc.
+ * Copyright 2005, Devicescape Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef IEEE80211_KEY_H
+#define IEEE80211_KEY_H
+
+/* ALG_TKIP
+ * struct ieee80211_key::key is encoded as a 256-bit (32 byte) data block:
+ * Temporal Encryption Key (128 bits)
+ * Temporal Authenticator Tx MIC Key (64 bits)
+ * Temporal Authenticator Rx MIC Key (64 bits)
+ */
+
+#define WEP_IV_LEN 4
+#define WEP_ICV_LEN 4
+
+#define ALG_TKIP_KEY_LEN 32
+/* Starting offsets for each key */
+#define ALG_TKIP_TEMP_ENCR_KEY 0
+#define ALG_TKIP_TEMP_AUTH_TX_MIC_KEY 16
+#define ALG_TKIP_TEMP_AUTH_RX_MIC_KEY 24
+#define TKIP_IV_LEN 8
+#define TKIP_ICV_LEN 4
+
+#define ALG_CCMP_KEY_LEN 16
+#define CCMP_HDR_LEN 8
+#define CCMP_MIC_LEN 8
+#define CCMP_TK_LEN 16
+#define CCMP_PN_LEN 6
+
+#define NUM_RX_DATA_QUEUES 17
+
+struct ieee80211_key {
+ int hw_key_idx; /* filled and used by low-level driver */
+ ieee80211_key_alg alg;
+ union {
+ struct {
+ /* last used TSC */
+ u32 iv32;
+ u16 iv16;
+ u16 p1k[5];
+ int tx_initialized;
+
+ /* last received RSC */
+ u32 iv32_rx[NUM_RX_DATA_QUEUES];
+ u16 iv16_rx[NUM_RX_DATA_QUEUES];
+ u16 p1k_rx[NUM_RX_DATA_QUEUES][5];
+ int rx_initialized[NUM_RX_DATA_QUEUES];
+ } tkip;
+ struct {
+ u8 tx_pn[6];
+ /* TODO: for WME make this replay counter per AC */
+ u8 rx_pn[NUM_RX_DATA_QUEUES][6];
+#ifndef AES_STATE_LEN
+#define AES_STATE_LEN 44
+#endif
+ u32 aes_state[AES_STATE_LEN];
+ u32 replays; /* dot11RSNAStatsCCMPReplays */
+ } ccmp;
+ } u;
+ int tx_rx_count; /* number of times this key has been used */
+ int keylen;
+
+ /* if the low level driver can provide hardware acceleration it should
+ * clear this flag */
+ int force_sw_encrypt:1;
+ int keyidx:8; /* WEP key index */
+ int default_tx_key:1; /* This key is the new default TX key
+ * (used only for broadcast keys). */
+
+ u8 key[0];
+};
+
+#endif /* IEEE80211_KEY_H */
--- /dev/null
+/*
+ * Copyright 2002-2004, Instant802 Networks, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/config.h>
+#include <linux/netdevice.h>
+#include <linux/types.h>
+
+#ifdef CONFIG_OAP_LEDS_WLAN
+extern void leds_wlan_set(int unit, int tx, int state);
+#endif
+
+void ieee80211_rx_led(int state, struct net_device *dev) {
+#ifdef CONFIG_OAP_LEDS_WLAN
+ static unsigned int count = 0;
+
+ if (state == 2) {
+ leds_wlan_set(0, 0, (++count) & 1);
+ }
+#endif
+}
+
+void ieee80211_tx_led(int state, struct net_device *dev) {
+#ifdef CONFIG_OAP_LEDS_WLAN
+ leds_wlan_set(0, 1, state);
+#endif
+}
+
--- /dev/null
+/*
+ * Copyright 2003-2005, Devicescape Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/config.h>
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/proc_fs.h>
+#include <linux/delay.h>
+
+#ifdef CONFIG_PROC_FS
+
+#include <net/ieee80211.h>
+#include <net/ieee80211_common.h>
+#include <net/ieee80211_mgmt.h>
+#include "ieee80211_i.h"
+#include "sta_info.h"
+#include "ieee80211_proc.h"
+#include "rate_control.h"
+
+
+static struct proc_dir_entry *ieee80211_proc;
+
+#define PROC_LIMIT (PAGE_SIZE - 80)
+
+
+static char * ieee80211_proc_key(char *p, struct ieee80211_key *key,
+ int idx, int def_key)
+{
+ int i;
+ u8 *tpn, *rpn;
+
+ if (!key)
+ return p;
+
+ p += sprintf(p, "key[%d]%s len=%d sw_encrypt=%d idx=%d hwidx=%d "
+ "tx_rx_count=%d",
+ idx, def_key ? "*" : "", key->keylen,
+ key->force_sw_encrypt, key->keyidx, key->hw_key_idx,
+ key->tx_rx_count);
+ switch (key->alg) {
+ case ALG_WEP:
+ p += sprintf(p, " alg=WEP");
+ break;
+ case ALG_TKIP:
+ p += sprintf(p, " alg=TKIP iv(tx)=%08x %04x",
+ key->u.tkip.iv32, key->u.tkip.iv16);
+ for (i = 0; i < NUM_RX_DATA_QUEUES; i++) {
+ if (key->u.tkip.iv32_rx[i] == 0 &&
+ key->u.tkip.iv16_rx[i] == 0)
+ continue;
+ p += sprintf(p, " iv(rx %d)=%08x %04x", i,
+ key->u.tkip.iv32_rx[i],
+ key->u.tkip.iv16_rx[i]);
+ }
+ break;
+ case ALG_CCMP:
+ tpn = key->u.ccmp.tx_pn;
+ p += sprintf(p, " alg=CCMP PN(tx)=%02x%02x%02x%02x%02x%02x",
+ tpn[0], tpn[1], tpn[2], tpn[3], tpn[4], tpn[5]);
+ for (i = 0; i < NUM_RX_DATA_QUEUES; i++) {
+ rpn = key->u.ccmp.rx_pn[i];
+ if (memcmp(rpn, "\x00\x00\x00\x00\x00\x00", 6) == 0)
+ continue;
+ p += sprintf(p, " PN(rx %d)=%02x%02x%02x%02x%02x%02x",
+ i, rpn[0], rpn[1], rpn[2], rpn[3], rpn[4],
+ rpn[5]);
+ }
+ p += sprintf(p, " replays=%u", key->u.ccmp.replays);
+ break;
+ default:
+ break;
+ }
+
+ p += sprintf(p, " key=");
+ for (i = 0; i < key->keylen; i++)
+ p += sprintf(p, "%02x", key->key[i]);
+ p += sprintf(p, "\n");
+ return p;
+}
+
+
+static char * ieee80211_proc_sub_if_norm(char *p,
+ struct ieee80211_if_norm *norm)
+{
+ p += sprintf(p, "type=norm\n");
+ if (norm->beacon_head)
+ p += sprintf(p, "beacon_head_len=%d\n", norm->beacon_head_len);
+ if (norm->beacon_tail)
+ p += sprintf(p, "beacon_tail_len=%d\n", norm->beacon_tail_len);
+ p += sprintf(p,
+ "max_aid=%d\n"
+ "num_sta_ps=%d\n"
+ "num_buffered_multicast=%u\n"
+ "dtim_period=%d\n"
+ "dtim_count=%d\n"
+ "num_beacons=%d\n"
+ "force_unicast_rateidx=%d\n"
+ "max_ratectrl_rateidx=%d\n",
+ norm->max_aid, atomic_read(&norm->num_sta_ps),
+ skb_queue_len(&norm->ps_bc_buf),
+ norm->dtim_period, norm->dtim_count, norm->num_beacons,
+ norm->force_unicast_rateidx, norm->max_ratectrl_rateidx);
+ return p;
+}
+
+
+static char * ieee80211_proc_sub_if_sta(char *p,
+ struct ieee80211_if_sta *ifsta)
+{
+ p += sprintf(p, "type=sta\n");
+ p += sprintf(p,
+ "state=%d\n"
+ "bssid=" MACSTR "\n"
+ "prev_bssid=" MACSTR "\n"
+ "ssid_len=%zd\n"
+ "aid=%d\n"
+ "ap_capab=0x%x\n"
+ "capab=0x%x\n"
+ "extra_ie_len=%zd\n"
+ "auth_tries=%d\n"
+ "assoc_tries=%d\n"
+ "flags=%s%s%s%s%s%s%s\n"
+ "auth_algs=0x%x\n"
+ "auth_alg=%d\n"
+ "auth_transaction=%d\n",
+ ifsta->state,
+ MAC2STR(ifsta->bssid),
+ MAC2STR(ifsta->prev_bssid),
+ ifsta->ssid_len,
+ ifsta->aid,
+ ifsta->ap_capab,
+ ifsta->capab,
+ ifsta->extra_ie_len,
+ ifsta->auth_tries,
+ ifsta->assoc_tries,
+ ifsta->ssid_set ? "[SSID]" : "",
+ ifsta->bssid_set ? "[BSSID]" : "",
+ ifsta->prev_bssid_set ? "[prev BSSID" : "",
+ ifsta->authenticated ? "[AUTH]" : "",
+ ifsta->associated ? "[ASSOC]" : "",
+ ifsta->probereq_poll ? "[PROBEREQ POLL]" : "",
+ ifsta->use_protection ? "[CTS prot]" : "",
+ ifsta->auth_algs,
+ ifsta->auth_alg,
+ ifsta->auth_transaction);
+ return p;
+}
+
+
+static char * ieee80211_proc_sub_if(char *p,
+ struct ieee80211_sub_if_data *sdata)
+{
+ if (sdata == NULL)
+ return p;
+
+ if (sdata->bss)
+ p += sprintf(p, "bss=%p\n", sdata->bss);
+
+ switch (sdata->type) {
+ case IEEE80211_SUB_IF_TYPE_NORM:
+ p = ieee80211_proc_sub_if_norm(p, &sdata->u.norm);
+ break;
+ case IEEE80211_SUB_IF_TYPE_WDS:
+ p += sprintf(p, "type=wds\n");
+ p += sprintf(p, "wds.peer=" MACSTR "\n",
+ MAC2STR(sdata->u.wds.remote_addr));
+ break;
+ case IEEE80211_SUB_IF_TYPE_VLAN:
+ p += sprintf(p, "type=vlan\n");
+ p += sprintf(p, "vlan.id=%d\n", sdata->u.vlan.id);
+ break;
+ case IEEE80211_SUB_IF_TYPE_STA:
+ p = ieee80211_proc_sub_if_sta(p, &sdata->u.sta);
+ break;
+ }
+ p += sprintf(p, "channel_use=%d\n", sdata->channel_use);
+ p += sprintf(p, "drop_unencrypted=%d\n", sdata->drop_unencrypted);
+ p += sprintf(p, "eapol=%d\n", sdata->eapol);
+ p += sprintf(p, "ieee802_1x=%d\n", sdata->ieee802_1x);
+
+ return p;
+}
+
+
+static int ieee80211_proc_iface_read(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ char *p = page;
+ struct net_device *dev = (struct net_device *) data;
+ struct ieee80211_sub_if_data *sdata;
+ int i;
+
+ if (off != 0) {
+ *eof = 1;
+ return 0;
+ }
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (!sdata)
+ return -1;
+
+ p = ieee80211_proc_sub_if(p, sdata);
+
+ for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
+ if (sdata->keys[i] == NULL)
+ continue;
+
+ p = ieee80211_proc_key(p, sdata->keys[i], i,
+ sdata->keys[i] == sdata->default_key);
+ }
+
+ return (p - page);
+}
+
+
+static int ieee80211_proc_sta_read(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ char *p = page;
+ struct sta_info *sta = (struct sta_info *) data;
+ struct ieee80211_local *local;
+ int inactive, i;
+
+ if (off != 0) {
+ *eof = 1;
+ return 0;
+ }
+
+ if (!sta || !sta->dev)
+ return -1;
+
+ p += sprintf(p, "users=%d\n", atomic_read(&sta->users));
+ p += sprintf(p, "aid=%d\n", sta->aid);
+ p += sprintf(p, "flags=0x%x %s%s%s%s%s%s%s%s%s%s\n", sta->flags,
+ sta->flags & WLAN_STA_AUTH ? "[AUTH]" : "",
+ sta->flags & WLAN_STA_ASSOC ? "[ASSOC]" : "",
+ sta->flags & WLAN_STA_PS ? "[PS]" : "",
+ sta->flags & WLAN_STA_TIM ? "[TIM]" : "",
+ sta->flags & WLAN_STA_PERM ? "[PERM]" : "",
+ sta->flags & WLAN_STA_AUTHORIZED ? "[AUTHORIZED]" : "",
+ sta->flags & WLAN_STA_SHORT_PREAMBLE ?
+ "[SHORT PREAMBLE]" : "",
+ sta->flags & WLAN_STA_WME ? "[WME]" : "",
+ sta->flags & WLAN_STA_WDS ? "[WDS]" : "",
+ sta->flags & WLAN_STA_XR ? "[XR]" : "");
+ p += sprintf(p, "key_idx_compression=%d\n",
+ sta->key_idx_compression);
+ p += sprintf(p, "dev=%s\n", sta->dev->name);
+ if (sta->vlan_id > 0)
+ p += sprintf(p, "vlan_id=%d\n", sta->vlan_id);
+ p += sprintf(p, "rx_packets=%lu\ntx_packets=%lu\nrx_bytes=%lu\n"
+ "tx_bytes=%lu\nrx_duplicates=%lu\nrx_fragments=%lu\n"
+ "rx_dropped=%lu\ntx_fragments=%lu\ntx_filtered=%lu\n",
+ sta->rx_packets, sta->tx_packets,
+ sta->rx_bytes, sta->tx_bytes,
+ sta->num_duplicates, sta->rx_fragments, sta->rx_dropped,
+ sta->tx_fragments, sta->tx_filtered_count);
+ p = ieee80211_proc_key(p, sta->key, 0, 1);
+
+ local = (struct ieee80211_local *) sta->dev->priv;
+ if (sta->txrate >= 0 && sta->txrate < local->num_curr_rates) {
+ p += sprintf(p, "txrate=%d\n",
+ local->curr_rates[sta->txrate].rate);
+ }
+ if (sta->last_txrate >= 0 &&
+ sta->last_txrate < local->num_curr_rates) {
+ p += sprintf(p, "last_txrate=%d\n",
+ local->curr_rates[sta->last_txrate].rate);
+ }
+ p += sprintf(p, "num_ps_buf_frames=%u\n",
+ skb_queue_len(&sta->ps_tx_buf));
+ p += sprintf(p, "tx_retry_failed=%lu\n", sta->tx_retry_failed);
+ p += sprintf(p, "tx_retry_count=%lu\n", sta->tx_retry_count);
+ p += sprintf(p, "last_rssi=%d\n", sta->last_rssi);
+ p += sprintf(p, "last_ack_rssi=%d %d %d\n",
+ sta->last_ack_rssi[0], sta->last_ack_rssi[1],
+ sta->last_ack_rssi[2]);
+ if (sta->last_ack)
+ p += sprintf(p, "last_ack_ms=%d\n",
+ jiffies_to_msecs(jiffies - sta->last_ack));
+ inactive = jiffies - sta->last_rx;
+ p += sprintf(p, "inactive_msec=%d\n", jiffies_to_msecs(inactive));
+ p += sprintf(p, "channel_use=%d\n", sta->channel_use);
+ p += sprintf(p, "wep_weak_iv_count=%d\n", sta->wep_weak_iv_count);
+#ifdef CONFIG_IEEE80211_DEBUG_COUNTERS
+ p += sprintf(p, "wme_rx_queue=");
+ for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
+ p += sprintf(p, "%u ", sta->wme_rx_queue[i]);
+ p += sprintf(p, "\n");
+
+ p += sprintf(p, "wme_tx_queue=");
+ for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
+ p += sprintf(p, "%u ", sta->wme_tx_queue[i]);
+ p += sprintf(p, "\n");
+#endif /* CONFIG_IEEE80211_DEBUG_COUNTERS */
+ p += sprintf(p, "last_seq_ctrl=");
+ for (i = 0; i < NUM_RX_DATA_QUEUES; i++) {
+ p += sprintf(p, "%x ", sta->last_seq_ctrl[i]);
+ }
+ p += sprintf(p, "\n");
+
+ p += rate_control_status_sta(local, sta, p);
+
+ return (p - page);
+}
+
+
+static int ieee80211_proc_counters_read(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ char *p = page;
+ struct ieee80211_local *local = (struct ieee80211_local *) data;
+ struct ieee80211_low_level_stats stats;
+
+ if (off != 0) {
+ *eof = 1;
+ return 0;
+ }
+
+ p += sprintf(p,
+ "TransmittedFragmentCount=%u\n"
+ "MulticastTransmittedFrameCount=%u\n"
+ "FailedCount=%u\n"
+ "RetryCount=%u\n"
+ "MultipleRetryCount=%d\n"
+ "FrameDuplicateCount=%d\n"
+ "ReceivedFragmentCount=%u\n"
+ "MulticastReceivedFrameCount=%u\n"
+ "TransmittedFrameCount=%u\n"
+ "WEPUndecryptableCount=%u\n",
+ local->dot11TransmittedFragmentCount,
+ local->dot11MulticastTransmittedFrameCount,
+ local->dot11FailedCount,
+ local->dot11RetryCount,
+ local->dot11MultipleRetryCount,
+ local->dot11FrameDuplicateCount,
+ local->dot11ReceivedFragmentCount,
+ local->dot11MulticastReceivedFrameCount,
+ local->dot11TransmittedFrameCount,
+ local->dot11WEPUndecryptableCount);
+
+ memset(&stats, 0, sizeof(stats));
+ if (local->hw->get_stats &&
+ local->hw->get_stats(local->mdev, &stats) == 0) {
+ p += sprintf(p,
+ "ACKFailureCount=%u\n"
+ "RTSFailureCount=%u\n"
+ "FCSErrorCount=%u\n"
+ "RTSSuccessCount=%u\n",
+ stats.dot11ACKFailureCount,
+ stats.dot11RTSFailureCount,
+ stats.dot11FCSErrorCount,
+ stats.dot11RTSSuccessCount);
+ }
+
+ return (p - page);
+}
+
+
+static int ieee80211_proc_debug_read(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ char *p = page;
+ struct ieee80211_local *local = (struct ieee80211_local *) data;
+ int i;
+
+ if (off != 0) {
+ *eof = 1;
+ return 0;
+ }
+
+#ifdef CONFIG_IEEE80211_DEBUG_COUNTERS
+ p += sprintf(p,
+ "tx_handlers_drop=%u\n"
+ "tx_handlers_queued=%u\n"
+ "tx_handlers_drop_unencrypted=%u\n"
+ "tx_handlers_drop_fragment=%u\n"
+ "tx_handlers_drop_wep=%u\n"
+ "tx_handlers_drop_rate_limit=%u\n"
+ "tx_handlers_drop_not_assoc=%u\n"
+ "tx_handlers_drop_unauth_port=%u\n"
+ "rx_handlers_drop=%u\n"
+ "rx_handlers_queued=%u\n"
+ "rx_handlers_drop_nullfunc=%u\n"
+ "rx_handlers_drop_defrag=%u\n"
+ "rx_handlers_drop_short=%u\n"
+ "rx_handlers_drop_passive_scan=%u\n"
+ "tx_expand_skb_head=%u\n"
+ "tx_expand_skb_head_cloned=%u\n"
+ "rx_expand_skb_head=%u\n"
+ "rx_expand_skb_head2=%u\n"
+ "rx_handlers_fragments=%u\n"
+ "tx_status_drop=%u\n",
+ local->tx_handlers_drop,
+ local->tx_handlers_queued,
+ local->tx_handlers_drop_unencrypted,
+ local->tx_handlers_drop_fragment,
+ local->tx_handlers_drop_wep,
+ local->tx_handlers_drop_rate_limit,
+ local->tx_handlers_drop_not_assoc,
+ local->tx_handlers_drop_unauth_port,
+ local->rx_handlers_drop,
+ local->rx_handlers_queued,
+ local->rx_handlers_drop_nullfunc,
+ local->rx_handlers_drop_defrag,
+ local->rx_handlers_drop_short,
+ local->rx_handlers_drop_passive_scan,
+ local->tx_expand_skb_head,
+ local->tx_expand_skb_head_cloned,
+ local->rx_expand_skb_head,
+ local->rx_expand_skb_head2,
+ local->rx_handlers_fragments,
+ local->tx_status_drop);
+ {
+ int i;
+ p += sprintf(p, "wme_rx_queue=");
+ for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
+ p += sprintf(p, " %u", local->wme_rx_queue[i]);
+ p += sprintf(p, "\n");
+
+ p += sprintf(p, "wme_tx_queue=");
+ for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
+ p += sprintf(p, " %u", local->wme_tx_queue[i]);
+ p += sprintf(p, "\n");
+ }
+#endif /* CONFIG_IEEE80211_DEBUG_COUNTERS */
+
+ p += sprintf(p, "num_scans=%u\n", local->scan.num_scans);
+
+ p += sprintf(p,
+ "conf.bss_count=%d\n"
+ "bss_dev_count=%u\n",
+ local->conf.bss_count, local->bss_dev_count);
+ for (i = 0; i < local->conf.bss_count; i++) {
+ p += sprintf(p, "bss_dev[%d]=%p (%s)\n",
+ i, local->bss_devs[i],
+ (i < local->bss_dev_count && local->bss_devs[i]) ?
+ local->bss_devs[i]->name : "N/A");
+ }
+
+ return (p - page);
+}
+
+
+static const char * ieee80211_mode_str_short(int mode)
+{
+ switch (mode) {
+ case MODE_IEEE80211A:
+ return "802.11a";
+ case MODE_IEEE80211B:
+ return "802.11b";
+ case MODE_IEEE80211G:
+ return "802.11g";
+ case MODE_ATHEROS_TURBO:
+ return "AtherosTurbo";
+ default:
+ return "UNKNOWN";
+ }
+}
+
+
+static const char * ieee80211_mode_str(int mode)
+{
+ switch (mode) {
+ case MODE_IEEE80211A:
+ return "IEEE 802.11a";
+ case MODE_IEEE80211B:
+ return "IEEE 802.11b";
+ case MODE_IEEE80211G:
+ return "IEEE 802.11g";
+ case MODE_ATHEROS_TURBO:
+ return "Atheros Turbo (5 GHz)";
+ default:
+ return "UNKNOWN";
+ }
+}
+
+
+static int ieee80211_proc_info_read(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ char *p = page;
+ struct ieee80211_local *local = (struct ieee80211_local *) data;
+ int m;
+ struct ieee80211_hw_modes *mode;
+
+ if (off != 0) {
+ *eof = 1;
+ return 0;
+ }
+
+ p += sprintf(p, "hw_name=%s\n", local->hw->name);
+ p += sprintf(p, "modes=");
+ for (m = 0; m < local->hw->num_modes; m++) {
+ mode = &local->hw->modes[m];
+ p += sprintf(p, "[%s]", ieee80211_mode_str_short(mode->mode));
+ }
+ p += sprintf(p, "\n");
+ if (local->rate_ctrl && local->rate_ctrl_priv)
+ p+= sprintf(p, "rate_ctrl_alg=%s\n", local->rate_ctrl->name);
+ return (p - page);
+}
+
+
+static int ieee80211_proc_config_read(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ char *p = page;
+ struct ieee80211_local *local = (struct ieee80211_local *) data;
+
+ if (off != 0) {
+ *eof = 1;
+ return 0;
+ }
+
+ p += sprintf(p,
+ "low_level_driver=%s\n"
+ "channel=%d\n"
+ "freq=%d\n"
+ "mode=%s\n"
+ "802.11h=%d\n"
+ "wep_iv=0x%06x\n"
+ "antenna_sel=%d\n"
+ "calib_int=%d\n"
+ "tx_power_reduction=%d.%d dBm\n"
+ "bridge_packets=%d\n"
+ "key_tx_rx_threshold=%d\n"
+ "rts_threshold=%d\n"
+ "fragmentation_threshold=%d\n"
+ "short_retry_limit=%d\n"
+ "long_retry_limit=%d\n"
+ "total_ps_buffered=%d\n",
+ local->hw->name ? local->hw->name : "N/A",
+ local->conf.channel,
+ local->conf.freq,
+ ieee80211_mode_str(local->conf.phymode),
+ local->conf.radar_detect,
+ local->wep_iv & 0xffffff,
+ local->conf.antenna_sel,
+ local->conf.calib_int,
+ local->conf.tx_power_reduction / 10,
+ local->conf.tx_power_reduction % 10,
+ local->bridge_packets,
+ local->key_tx_rx_threshold,
+ local->rts_threshold,
+ local->fragmentation_threshold,
+ local->short_retry_limit,
+ local->long_retry_limit,
+ local->total_ps_buffered);
+
+ return (p - page);
+}
+
+
+static int ieee80211_proc_channels_read(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ char *p = page;
+ struct ieee80211_local *local = (struct ieee80211_local *) data;
+ int m, c;
+ struct ieee80211_hw_modes *mode;
+ struct ieee80211_channel *chan;
+
+ if (off != 0) {
+ *eof = 1;
+ return 0;
+ }
+
+ p += sprintf(p, "MODE CHAN FREQ TXPOWER ANTMAX FLAGS\n");
+ for (m = 0; m < local->hw->num_modes; m++) {
+ mode = &local->hw->modes[m];
+ for (c = 0; c < mode->num_channels; c++) {
+ chan = &mode->channels[c];
+ p += sprintf(p, "%d %d %d %d %d %s%s%s\n",
+ mode->mode, chan->chan, chan->freq,
+ chan->power_level, chan->antenna_max,
+ chan->flag & IEEE80211_CHAN_W_SCAN ?
+ "[W_SCAN]" : "",
+ chan->flag & IEEE80211_CHAN_W_ACTIVE_SCAN
+ ? "[W_ACTIVE_SCAN]" : "",
+ chan->flag & IEEE80211_CHAN_W_IBSS ?
+ "[W_IBSS]" : "");
+ }
+ }
+ return (p - page);
+}
+
+
+static int ieee80211_proc_rates_read(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ char *p = page;
+ struct ieee80211_local *local = (struct ieee80211_local *) data;
+ int r;
+ struct ieee80211_rate *rate;
+
+ if (off != 0) {
+ *eof = 1;
+ return 0;
+ }
+
+ p += sprintf(p, "RATE VAL VAL2 MIN_RSSI_ACK MIN_RSSI_ACK_DELTA "
+ "FLAGS\n");
+ for (r = 0; r < local->num_curr_rates; r++) {
+ rate = &local->curr_rates[r];
+ p += sprintf(p, "%d %d %d %d %d 0x%x %s%s%s%s%s%s%s%s\n",
+ rate->rate, rate->val, rate->val2,
+ rate->min_rssi_ack, rate->min_rssi_ack_delta,
+ rate->flags,
+ rate->flags & IEEE80211_RATE_ERP ? "[ERP]" : "",
+ rate->flags & IEEE80211_RATE_BASIC ?
+ "[BASIC]" : "",
+ rate->flags & IEEE80211_RATE_PREAMBLE2 ?
+ "[PREAMBLE2]" : "",
+ rate->flags & IEEE80211_RATE_SUPPORTED ?
+ "[SUPPORTED]" : "",
+ rate->flags & IEEE80211_RATE_OFDM ? "[OFDM]" : "",
+ rate->flags & IEEE80211_RATE_CCK ? "[CCK]" : "",
+ rate->flags & IEEE80211_RATE_TURBO ?
+ "[TURBO]" : "",
+ rate->flags & IEEE80211_RATE_MANDATORY ?
+ "[MANDATORY]" : "");
+ }
+ return (p - page);
+}
+
+
+static int ieee80211_proc_multicast_read(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ char *p = page;
+ struct ieee80211_local *local = (struct ieee80211_local *) data;
+
+ if (off != 0) {
+ *eof = 1;
+ return 0;
+ }
+
+ return rate_control_status_global(local, p);
+
+}
+
+
+void ieee80211_proc_init_sta(struct ieee80211_local *local,
+ struct sta_info *sta)
+{
+ char buf[30];
+ struct proc_dir_entry *entry;
+
+ sprintf(buf, MACSTR, MAC2STR(sta->addr));
+
+ if (!local->proc_sta)
+ return;
+
+ entry = create_proc_read_entry(buf, 0, local->proc_sta,
+ ieee80211_proc_sta_read, sta);
+ if (entry) {
+ entry->mode &= ~(S_IRWXG | S_IRWXO);
+ sta->proc_entry_added = 1;
+ }
+}
+
+
+void ieee80211_proc_deinit_sta(struct ieee80211_local *local,
+ struct sta_info *sta)
+{
+ char buf[30];
+ sprintf(buf, MACSTR, MAC2STR(sta->addr));
+ if (local->proc_sta) {
+ remove_proc_entry(buf, local->proc_sta);
+ sta->proc_entry_added = 0;
+ }
+}
+
+
+void ieee80211_proc_init_virtual(struct net_device *dev)
+{
+ struct proc_dir_entry *entry;
+ struct ieee80211_local *local = (struct ieee80211_local *) dev->priv;
+
+ if (!local->proc_iface)
+ return;
+
+ entry = create_proc_read_entry(dev->name, 0, local->proc_iface,
+ ieee80211_proc_iface_read, dev);
+ if (entry)
+ entry->mode &= ~(S_IRWXG | S_IRWXO);
+}
+
+
+void ieee80211_proc_deinit_virtual(struct net_device *dev)
+{
+ struct ieee80211_local *local = (struct ieee80211_local *) dev->priv;
+
+ if (local->proc_iface)
+ remove_proc_entry(dev->name, local->proc_iface);
+}
+
+
+void ieee80211_proc_init_interface(struct ieee80211_local *local)
+{
+ if (!ieee80211_proc)
+ return;
+
+ local->proc = proc_mkdir(local->wdev->name, ieee80211_proc);
+ if (!local->proc)
+ return;
+
+ local->proc_sta = proc_mkdir("sta", local->proc);
+ local->proc_iface = proc_mkdir("iface", local->proc);
+ create_proc_read_entry("counters", 0, local->proc,
+ ieee80211_proc_counters_read, local);
+ create_proc_read_entry("config", 0, local->proc,
+ ieee80211_proc_config_read, local);
+ create_proc_read_entry("channels", 0, local->proc,
+ ieee80211_proc_channels_read, local);
+ create_proc_read_entry("rates", 0, local->proc,
+ ieee80211_proc_rates_read, local);
+ create_proc_read_entry("multicast", 0, local->proc,
+ ieee80211_proc_multicast_read, local);
+ create_proc_read_entry("debug", 0, local->proc,
+ ieee80211_proc_debug_read, local);
+ create_proc_read_entry("info", 0, local->proc,
+ ieee80211_proc_info_read, local);
+ ieee80211_proc_init_virtual(local->wdev);
+}
+
+
+void ieee80211_proc_deinit_interface(struct ieee80211_local *local)
+{
+ if (!local->proc)
+ return;
+
+ ieee80211_proc_deinit_virtual(local->wdev);
+ remove_proc_entry("iface", local->proc);
+ remove_proc_entry("sta", local->proc);
+ remove_proc_entry("counters", local->proc);
+ remove_proc_entry("debug", local->proc);
+ remove_proc_entry("config", local->proc);
+ remove_proc_entry("channels", local->proc);
+ remove_proc_entry("rates", local->proc);
+ remove_proc_entry("multicast", local->proc);
+ remove_proc_entry("info", local->proc);
+ local->proc = NULL;
+ remove_proc_entry(local->wdev->name, ieee80211_proc);
+}
+
+
+void ieee80211_proc_init(void)
+{
+ if (proc_net == NULL) {
+ ieee80211_proc = NULL;
+ return;
+ }
+
+ ieee80211_proc = proc_mkdir("ieee80211", proc_net);
+ if (!ieee80211_proc)
+ printk(KERN_WARNING "Failed to mkdir /proc/net/ieee80211\n");
+}
+
+
+void ieee80211_proc_deinit(void)
+{
+ if (!ieee80211_proc)
+ return;
+
+ ieee80211_proc = NULL;
+ remove_proc_entry("ieee80211", proc_net);
+}
+
+#endif /* CONFIG_PROC_FS */
--- /dev/null
+/*
+ * Copyright 2003-2004, Instant802 Networks, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef IEEE80211_PROC_H
+#define IEEE80211_PROC_H
+
+#ifdef CONFIG_PROC_FS
+
+void ieee80211_proc_init_sta(struct ieee80211_local *local,
+ struct sta_info *sta);
+void ieee80211_proc_deinit_sta(struct ieee80211_local *local,
+ struct sta_info *sta);
+void ieee80211_proc_init_virtual(struct net_device *dev);
+void ieee80211_proc_deinit_virtual(struct net_device *dev);
+void ieee80211_proc_init_interface(struct ieee80211_local *local);
+void ieee80211_proc_deinit_interface(struct ieee80211_local *local);
+void ieee80211_proc_init(void);
+void ieee80211_proc_deinit(void);
+
+#else /* CONFIG_PROC_FS */
+
+static inline void ieee80211_proc_init_sta(struct ieee80211_local *local,
+ struct sta_info *sta) {}
+static inline void ieee80211_proc_deinit_sta(struct ieee80211_local *local,
+ struct sta_info *sta) {}
+static inline void ieee80211_proc_init_virtual(struct net_device *dev) {}
+static inline void ieee80211_proc_deinit_virtual(struct net_device *dev) {}
+static inline void
+ieee80211_proc_init_interface(struct ieee80211_local *local) {}
+static inline void
+ieee80211_proc_deinit_interface(struct ieee80211_local *local) {}
+static inline void ieee80211_proc_init(void) {}
+static inline void ieee80211_proc_deinit(void) {}
+#endif /* CONFIG_PROC_FS */
+
+#endif /* IEEE80211_PROC_H */
--- /dev/null
+/*
+ * Copyright 2002-2004, Instant802 Networks, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/config.h>
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/skbuff.h>
+
+#include <net/ieee80211.h>
+#include "ieee80211_i.h"
+#include "rate_control.h"
+
+
+/* Maximum number of seconds to wait for the traffic load to get below
+ * threshold before forcing a passive scan. */
+#define MAX_SCAN_WAIT 60
+/* Threshold (pkts/sec TX or RX) for delaying passive scan */
+#define SCAN_TXRX_THRESHOLD 75
+
+static void get_channel_params(struct ieee80211_local *local, int channel,
+ struct ieee80211_hw_modes **mode,
+ struct ieee80211_channel **chan)
+{
+ int m;
+
+ for (m = 0; m < local->hw->num_modes; m++) {
+ *mode = &local->hw->modes[m];
+ if ((*mode)->mode == local->conf.phymode)
+ break;
+ }
+ local->scan.mode_idx = m;
+ local->scan.chan_idx = 0;
+ do {
+ *chan = &(*mode)->channels[local->scan.chan_idx];
+ if ((*chan)->chan == channel) {
+ return;
+ }
+ local->scan.chan_idx++;
+ } while (local->scan.chan_idx < (*mode)->num_channels);
+ *chan = NULL;
+}
+
+
+static void next_chan_same_mode(struct ieee80211_local *local,
+ struct ieee80211_hw_modes **mode,
+ struct ieee80211_channel **chan)
+{
+ int m, prev;
+
+ for (m = 0; m < local->hw->num_modes; m++) {
+ *mode = &local->hw->modes[m];
+ if ((*mode)->mode == local->conf.phymode)
+ break;
+ }
+ local->scan.mode_idx = m;
+
+ /* Select next channel - scan only channels marked with W_SCAN flag */
+ prev = local->scan.chan_idx;
+ do {
+ local->scan.chan_idx++;
+ if (local->scan.chan_idx >= (*mode)->num_channels)
+ local->scan.chan_idx = 0;
+ *chan = &(*mode)->channels[local->scan.chan_idx];
+ if ((*chan)->flag & IEEE80211_CHAN_W_SCAN)
+ break;
+ } while (local->scan.chan_idx != prev);
+}
+
+
+static void next_chan_all_modes(struct ieee80211_local *local,
+ struct ieee80211_hw_modes **mode,
+ struct ieee80211_channel **chan)
+{
+ int prev, prev_m;
+
+ if (local->scan.mode_idx >= local->hw->num_modes) {
+ local->scan.mode_idx = 0;
+ local->scan.chan_idx = 0;
+ }
+
+ /* Select next channel - scan only channels marked with W_SCAN flag */
+ prev = local->scan.chan_idx;
+ prev_m = local->scan.mode_idx;
+ do {
+ *mode = &local->hw->modes[local->scan.mode_idx];
+ local->scan.chan_idx++;
+ if (local->scan.chan_idx >= (*mode)->num_channels) {
+ local->scan.chan_idx = 0;
+ local->scan.mode_idx++;
+ if (local->scan.mode_idx >= local->hw->num_modes)
+ local->scan.mode_idx = 0;
+ *mode = &local->hw->modes[local->scan.mode_idx];
+ }
+ *chan = &(*mode)->channels[local->scan.chan_idx];
+ if ((*chan)->flag & IEEE80211_CHAN_W_SCAN)
+ break;
+ } while (local->scan.chan_idx != prev ||
+ local->scan.mode_idx != prev_m);
+}
+
+
+static void ieee80211_scan_start(struct net_device *dev,
+ struct ieee80211_scan_conf *conf)
+{
+ struct ieee80211_local *local = dev->priv;
+ int old_mode_idx = local->scan.mode_idx;
+ int old_chan_idx = local->scan.chan_idx;
+ struct ieee80211_hw_modes *mode = NULL;
+ struct ieee80211_channel *chan = NULL;
+ int ret;
+
+ if (local->hw->passive_scan == 0) {
+ printk(KERN_DEBUG "%s: Scan handler called, yet the hardware "
+ "does not support passive scanning. Disabled.\n",
+ dev->name);
+ return;
+ }
+
+ if ((local->scan.tries < MAX_SCAN_WAIT &&
+ local->scan.txrx_count > SCAN_TXRX_THRESHOLD)) {
+ local->scan.tries++;
+ /* Count TX/RX packets during one second interval and allow
+ * scan to start only if the number of packets is below the
+ * threshold. */
+ local->scan.txrx_count = 0;
+ local->scan.timer.expires = jiffies + HZ;
+ add_timer(&local->scan.timer);
+ return;
+ }
+
+ if (local->scan.skb == NULL) {
+ printk(KERN_DEBUG "%s: Scan start called even though scan.skb "
+ "is not set\n", dev->name);
+ }
+
+ if (local->scan.our_mode_only) {
+ if (local->scan.channel > 0) {
+ get_channel_params(local, local->scan.channel, &mode,
+ &chan);
+ } else
+ next_chan_same_mode(local, &mode, &chan);
+ }
+ else
+ next_chan_all_modes(local, &mode, &chan);
+
+ conf->scan_channel = chan->chan;
+ conf->scan_freq = chan->freq;
+ conf->scan_channel_val = chan->val;
+ conf->scan_phymode = mode->mode;
+ conf->scan_power_level = chan->power_level;
+ conf->scan_antenna_max = chan->antenna_max;
+ conf->scan_time = 2 * local->hw->channel_change_time +
+ local->scan.time; /* 10ms scan time+hardware changes */
+ conf->skb = local->scan.skb ?
+ skb_clone(local->scan.skb, GFP_ATOMIC) : NULL;
+ conf->tx_control = &local->scan.tx_control;
+#if 0
+ printk(KERN_DEBUG "%s: Doing scan on mode: %d freq: %d chan: %d "
+ "for %d ms\n",
+ dev->name, conf->scan_phymode, conf->scan_freq,
+ conf->scan_channel, conf->scan_time);
+#endif
+ local->scan.rx_packets = 0;
+ local->scan.rx_beacon = 0;
+ local->scan.freq = chan->freq;
+ local->scan.in_scan = 1;
+
+ ieee80211_netif_oper(dev, NETIF_STOP);
+
+ ret = local->hw->passive_scan(dev, IEEE80211_SCAN_START, conf);
+
+ if (ret == 0) {
+ long usec = local->hw->channel_change_time +
+ local->scan.time;
+ usec += 1000000L / HZ - 1;
+ usec /= 1000000L / HZ;
+ local->scan.timer.expires = jiffies + usec;
+ } else {
+ local->scan.in_scan = 0;
+ if (conf->skb)
+ dev_kfree_skb(conf->skb);
+ ieee80211_netif_oper(dev, NETIF_WAKE);
+ if (ret == -EAGAIN) {
+ local->scan.timer.expires = jiffies +
+ (local->scan.interval * HZ / 100);
+ local->scan.mode_idx = old_mode_idx;
+ local->scan.chan_idx = old_chan_idx;
+ } else {
+ printk(KERN_DEBUG "%s: Got unknown error from "
+ "passive_scan %d\n", dev->name, ret);
+ local->scan.timer.expires = jiffies +
+ (local->scan.interval * HZ);
+ }
+ local->scan.in_scan = 0;
+ }
+
+ add_timer(&local->scan.timer);
+}
+
+
+static void ieee80211_scan_stop(struct net_device *dev,
+ struct ieee80211_scan_conf *conf)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct ieee80211_hw_modes *mode;
+ struct ieee80211_channel *chan;
+ int wait;
+
+ if (local->hw->passive_scan == NULL)
+ return;
+
+ if (local->scan.mode_idx >= local->hw->num_modes) {
+ local->scan.mode_idx = 0;
+ local->scan.chan_idx = 0;
+ }
+
+ mode = &local->hw->modes[local->scan.mode_idx];
+
+ if (local->scan.chan_idx >= mode->num_channels) {
+ local->scan.chan_idx = 0;
+ }
+
+ chan = &mode->channels[local->scan.chan_idx];
+
+ local->hw->passive_scan(dev, IEEE80211_SCAN_END, conf);
+
+#ifdef CONFIG_IEEE80211_VERBOSE_DEBUG
+ printk(KERN_DEBUG "%s: Did scan on mode: %d freq: %d chan: %d "
+ "GOT: %d Beacon: %d (%d)\n",
+ dev->name,
+ mode->mode, chan->freq, chan->chan,
+ local->scan.rx_packets, local->scan.rx_beacon,
+ local->scan.tries);
+#endif /* CONFIG_IEEE80211_VERBOSE_DEBUG */
+ local->scan.num_scans++;
+
+ local->scan.in_scan = 0;
+ ieee80211_netif_oper(dev, NETIF_WAKE);
+
+ local->scan.tries = 0;
+ /* Use random interval of scan.interval .. 2 * scan.interval */
+ wait = (local->scan.interval * HZ * ((net_random() & 127) + 128)) /
+ 128;
+ local->scan.timer.expires = jiffies + wait;
+
+ add_timer(&local->scan.timer);
+}
+
+
+static void ieee80211_scan_handler(unsigned long uldev)
+{
+ struct net_device *dev = (struct net_device *) uldev;
+ struct ieee80211_local *local = dev->priv;
+ struct ieee80211_scan_conf conf;
+
+ if (local->scan.interval == 0 && !local->scan.in_scan) {
+ /* Passive scanning is disabled - keep the timer always
+ * running to make code cleaner. */
+ local->scan.timer.expires = jiffies + 10 * HZ;
+ add_timer(&local->scan.timer);
+ return;
+ }
+
+ memset(&conf, 0, sizeof(struct ieee80211_scan_conf));
+ conf.running_freq = local->conf.freq;
+ conf.running_channel = local->conf.channel;
+ conf.running_phymode = local->conf.phymode;
+ conf.running_channel_val = local->conf.channel_val;
+ conf.running_power_level = local->conf.power_level;
+ conf.running_antenna_max = local->conf.antenna_max;
+
+ if (local->scan.in_scan == 0)
+ ieee80211_scan_start(dev, &conf);
+ else
+ ieee80211_scan_stop(dev, &conf);
+}
+
+
+void ieee80211_init_scan(struct net_device *dev)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct ieee80211_hdr hdr;
+ u16 fc;
+ int len = 10;
+ struct rate_control_extra extra;
+
+ /* Only initialize passive scanning if the hardware supports it */
+ if (!local->hw->passive_scan) {
+ local->scan.skb = NULL;
+ memset(&local->scan.tx_control, 0,
+ sizeof(local->scan.tx_control));
+ printk(KERN_DEBUG "%s: Does not support passive scan, "
+ "disabled\n", dev->name);
+ return;
+ }
+
+ local->scan.interval = 0;
+ local->scan.our_mode_only = 1;
+ local->scan.time = 10000;
+ local->scan.timer.function = ieee80211_scan_handler;
+ local->scan.timer.data = (unsigned long) dev;
+ local->scan.timer.expires = jiffies + local->scan.interval * HZ;
+ add_timer(&local->scan.timer);
+
+ /* Create a CTS from for broadcasting before
+ * the low level changes channels */
+ local->scan.skb = alloc_skb(len, GFP_KERNEL);
+ if (local->scan.skb == NULL) {
+ printk(KERN_WARNING "%s: Failed to allocate CTS packet for "
+ "passive scan\n", dev->name);
+ return;
+ }
+
+ fc = (WLAN_FC_TYPE_CTRL << 2) | (WLAN_FC_STYPE_CTS << 4);
+ hdr.frame_control = cpu_to_le16(fc);
+ hdr.duration_id =
+ cpu_to_le16(2 * local->hw->channel_change_time +
+ local->scan.time);
+ memcpy(hdr.addr1, dev->dev_addr, ETH_ALEN); /* DA */
+ hdr.seq_ctrl = 0;
+
+ memcpy(skb_put(local->scan.skb, len), &hdr, len);
+
+ memset(&local->scan.tx_control, 0, sizeof(local->scan.tx_control));
+ local->scan.tx_control.key_idx = HW_KEY_IDX_INVALID;
+ local->scan.tx_control.do_not_encrypt = 1;
+ memset(&extra, 0, sizeof(extra));
+ extra.endidx = local->num_curr_rates;
+ local->scan.tx_control.tx_rate =
+ rate_control_get_rate(dev, local->scan.skb, &extra)->val;
+ local->scan.tx_control.no_ack = 1;
+}
+
+
+void ieee80211_stop_scan(struct net_device *dev)
+{
+ struct ieee80211_local *local = dev->priv;
+
+ if (local->hw->passive_scan != 0) {
+ del_timer_sync(&local->scan.timer);
+ dev_kfree_skb(local->scan.skb);
+ local->scan.skb = NULL;
+ }
+}
--- /dev/null
+/*
+ * BSS client mode implementation
+ * Copyright 2003, Jouni Malinen <jkmaline@cc.hut.fi>
+ * Copyright 2004, Instant802 Networks, Inc.
+ * Copyright 2005, Devicescape Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+/* TODO:
+ * BSS table: use <BSSID,SSID> as the key to support multi-SSID APs
+ * order BSS list by RSSI(?) ("quality of AP")
+ * scan result table filtering (by capability (privacy, IBSS/BSS, WPA/RSN IE,
+ * SSID)
+ */
+#include <linux/config.h>
+#include <linux/version.h>
+#include <linux/if_ether.h>
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+#include <linux/if_arp.h>
+#include <linux/wireless.h>
+#include <linux/random.h>
+#include <net/iw_handler.h>
+#include <asm/types.h>
+#include <asm/delay.h>
+
+#include <net/ieee80211.h>
+#include <net/ieee80211_mgmt.h>
+#include "ieee80211_i.h"
+#include "rate_control.h"
+#include "hostapd_ioctl.h"
+
+/* #define IEEE80211_IBSS_DEBUG */
+
+#define IEEE80211_AUTH_TIMEOUT (HZ / 5)
+#define IEEE80211_AUTH_MAX_TRIES 3
+#define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
+#define IEEE80211_ASSOC_MAX_TRIES 3
+#define IEEE80211_MONITORING_INTERVAL (2 * HZ)
+#define IEEE80211_PROBE_INTERVAL (60 * HZ)
+#define IEEE80211_RETRY_AUTH_INTERVAL (1 * HZ)
+#define IEEE80211_SCAN_INTERVAL (2 * HZ)
+#define IEEE80211_SCAN_INTERVAL_SLOW (15 * HZ)
+#define IEEE80211_IBSS_JOIN_TIMEOUT (20 * HZ)
+
+#define IEEE80211_PROBE_DELAY (HZ / 33)
+#define IEEE80211_CHANNEL_TIME (HZ / 33)
+#define IEEE80211_PASSIVE_CHANNEL_TIME (HZ / 5)
+#define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ)
+#define IEEE80211_IBSS_MERGE_INTERVAL (30 * HZ)
+#define IEEE80211_IBSS_INACTIVITY_LIMIT (60 * HZ)
+
+#define IEEE80211_IBSS_MAX_STA_ENTRIES 128
+
+
+#define IEEE80211_FC(type, stype) cpu_to_le16((type << 2) | (stype << 4))
+
+#define ERP_INFO_USE_PROTECTION BIT(1)
+
+static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst,
+ u8 *ssid, size_t ssid_len);
+static struct ieee80211_sta_bss *
+ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid);
+static void ieee80211_rx_bss_put(struct net_device *dev,
+ struct ieee80211_sta_bss *bss);
+static int ieee80211_sta_find_ibss(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta);
+static int ieee80211_sta_wep_configured(struct net_device *dev);
+
+
+/* Parsed Information Elements */
+struct ieee802_11_elems {
+ u8 *ssid;
+ u8 ssid_len;
+ u8 *supp_rates;
+ u8 supp_rates_len;
+ u8 *fh_params;
+ u8 fh_params_len;
+ u8 *ds_params;
+ u8 ds_params_len;
+ u8 *cf_params;
+ u8 cf_params_len;
+ u8 *tim;
+ u8 tim_len;
+ u8 *ibss_params;
+ u8 ibss_params_len;
+ u8 *challenge;
+ u8 challenge_len;
+ u8 *wpa;
+ u8 wpa_len;
+ u8 *rsn;
+ u8 rsn_len;
+ u8 *erp_info;
+ u8 erp_info_len;
+ u8 *ext_supp_rates;
+ u8 ext_supp_rates_len;
+ u8 *wmm_info;
+ u8 wmm_info_len;
+ u8 *wmm_param;
+ u8 wmm_param_len;
+};
+
+typedef enum { ParseOK = 0, ParseUnknown = 1, ParseFailed = -1 } ParseRes;
+
+
+static ParseRes ieee802_11_parse_elems(u8 *start, size_t len,
+ struct ieee802_11_elems *elems)
+{
+ size_t left = len;
+ u8 *pos = start;
+ int unknown = 0;
+
+ memset(elems, 0, sizeof(*elems));
+
+ while (left >= 2) {
+ u8 id, elen;
+
+ id = *pos++;
+ elen = *pos++;
+ left -= 2;
+
+ if (elen > left) {
+#if 0
+ if (net_ratelimit())
+ printk(KERN_DEBUG "IEEE 802.11 element parse "
+ "failed (id=%d elen=%d left=%d)\n",
+ id, elen, left);
+#endif
+ return ParseFailed;
+ }
+
+ switch (id) {
+ case WLAN_EID_SSID:
+ elems->ssid = pos;
+ elems->ssid_len = elen;
+ break;
+ case WLAN_EID_SUPP_RATES:
+ elems->supp_rates = pos;
+ elems->supp_rates_len = elen;
+ break;
+ case WLAN_EID_FH_PARAMS:
+ elems->fh_params = pos;
+ elems->fh_params_len = elen;
+ break;
+ case WLAN_EID_DS_PARAMS:
+ elems->ds_params = pos;
+ elems->ds_params_len = elen;
+ break;
+ case WLAN_EID_CF_PARAMS:
+ elems->cf_params = pos;
+ elems->cf_params_len = elen;
+ break;
+ case WLAN_EID_TIM:
+ elems->tim = pos;
+ elems->tim_len = elen;
+ break;
+ case WLAN_EID_IBSS_PARAMS:
+ elems->ibss_params = pos;
+ elems->ibss_params_len = elen;
+ break;
+ case WLAN_EID_CHALLENGE:
+ elems->challenge = pos;
+ elems->challenge_len = elen;
+ break;
+ case WLAN_EID_WPA:
+ if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
+ pos[2] == 0xf2) {
+ /* Microsoft OUI (00:50:F2) */
+ if (pos[3] == 1) {
+ /* OUI Type 1 - WPA IE */
+ elems->wpa = pos;
+ elems->wpa_len = elen;
+ } else if (elen >= 5 && pos[3] == 2) {
+ if (pos[4] == 0) {
+ elems->wmm_info = pos;
+ elems->wmm_info_len = elen;
+ } else if (pos[4] == 1) {
+ elems->wmm_param = pos;
+ elems->wmm_param_len = elen;
+ }
+ }
+ }
+ break;
+ case WLAN_EID_RSN:
+ elems->rsn = pos;
+ elems->rsn_len = elen;
+ break;
+ case WLAN_EID_ERP_INFO:
+ elems->erp_info = pos;
+ elems->erp_info_len = elen;
+ break;
+ case WLAN_EID_EXT_SUPP_RATES:
+ elems->ext_supp_rates = pos;
+ elems->ext_supp_rates_len = elen;
+ break;
+ default:
+#if 0
+ printk(KERN_DEBUG "IEEE 802.11 element parse ignored "
+ "unknown element (id=%d elen=%d)\n",
+ id, elen);
+#endif
+ unknown++;
+ break;
+ }
+
+ left -= elen;
+ pos += elen;
+ }
+
+ if (left)
+ return ParseFailed;
+
+ return unknown ? ParseUnknown : ParseOK;
+}
+
+
+
+
+static int ecw2cw(int ecw)
+{
+ int cw = 1;
+ while (ecw > 0) {
+ cw <<= 1;
+ ecw--;
+ }
+ return cw - 1;
+}
+
+
+static void ieee80211_sta_wmm_params(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta,
+ u8 *wmm_param, size_t wmm_param_len)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct ieee80211_tx_queue_params params;
+ size_t left;
+ int count;
+ u8 *pos;
+
+ if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1)
+ return;
+ count = wmm_param[6] & 0x0f;
+ if (count == ifsta->wmm_last_param_set)
+ return;
+ ifsta->wmm_last_param_set = count;
+
+ pos = wmm_param + 8;
+ left = wmm_param_len - 8;
+
+ memset(¶ms, 0, sizeof(params));
+
+ if (local->hw->conf_tx == NULL)
+ return;
+
+ local->wmm_acm = 0;
+ for (; left >= 4; left -= 4, pos += 4) {
+ int aci = (pos[0] >> 5) & 0x03;
+ int acm = (pos[0] >> 4) & 0x01;
+ int queue;
+
+ switch (aci) {
+ case 1:
+ queue = IEEE80211_TX_QUEUE_DATA3;
+ if (acm) {
+ local->wmm_acm |= BIT(1) | BIT(2);
+ }
+ break;
+ case 2:
+ queue = IEEE80211_TX_QUEUE_DATA1;
+ if (acm) {
+ local->wmm_acm |= BIT(4) | BIT(5);
+ }
+ break;
+ case 3:
+ queue = IEEE80211_TX_QUEUE_DATA0;
+ if (acm) {
+ local->wmm_acm |= BIT(6) | BIT(7);
+ }
+ break;
+ case 0:
+ default:
+ queue = IEEE80211_TX_QUEUE_DATA2;
+ if (acm) {
+ local->wmm_acm |= BIT(0) | BIT(3);
+ }
+ break;
+ }
+
+ params.aifs = pos[0] & 0x0f;
+ params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4);
+ params.cw_min = ecw2cw(pos[1] & 0x0f);
+ /* TXOP is in units of 32 usec; burst_time in 0.1 ms */
+ params.burst_time = (pos[2] | (pos[3] << 8)) * 32 / 100;
+ printk(KERN_DEBUG "%s: WMM queue=%d aci=%d acm=%d aifs=%d "
+ "cWmin=%d cWmax=%d burst=%d\n",
+ dev->name, queue, aci, acm, params.aifs, params.cw_min,
+ params.cw_max, params.burst_time);
+ /* TODO: handle ACM (block TX, fallback to next lowest allowed
+ * AC for now) */
+ if (local->hw->conf_tx(local->mdev, queue, ¶ms)) {
+ printk(KERN_DEBUG "%s: failed to set TX queue "
+ "parameters for queue %d\n", dev->name, queue);
+ }
+ }
+}
+
+
+static void ieee80211_sta_send_associnfo(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta)
+{
+ char *buf;
+ size_t len;
+ int i;
+ union iwreq_data wrqu;
+
+ if (ifsta->assocreq_ies == NULL && ifsta->assocresp_ies == NULL)
+ return;
+
+ buf = kmalloc(50 + 2 * (ifsta->assocreq_ies_len +
+ ifsta->assocresp_ies_len), GFP_ATOMIC);
+ if (buf == NULL)
+ return;
+
+ len = sprintf(buf, "ASSOCINFO(");
+ if (ifsta->assocreq_ies) {
+ len += sprintf(buf + len, "ReqIEs=");
+ for (i = 0; i < ifsta->assocreq_ies_len; i++) {
+ len += sprintf(buf + len, "%02x",
+ ifsta->assocreq_ies[i]);
+ }
+ }
+ if (ifsta->assocresp_ies) {
+ if (ifsta->assocreq_ies)
+ len += sprintf(buf + len, " ");
+ len += sprintf(buf + len, "RespIEs=");
+ for (i = 0; i < ifsta->assocresp_ies_len; i++) {
+ len += sprintf(buf + len, "%02x",
+ ifsta->assocresp_ies[i]);
+ }
+ }
+ len += sprintf(buf + len, ")");
+
+ if (len > IW_CUSTOM_MAX) {
+ len = sprintf(buf, "ASSOCRESPIE=");
+ for (i = 0; i < ifsta->assocresp_ies_len; i++) {
+ len += sprintf(buf + len, "%02x",
+ ifsta->assocresp_ies[i]);
+ }
+ }
+
+ memset(&wrqu, 0, sizeof(wrqu));
+ wrqu.data.length = len;
+ wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf);
+
+ kfree(buf);
+}
+
+
+static void ieee80211_set_associated(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta, int assoc)
+{
+ union iwreq_data wrqu;
+
+ if (ifsta->associated == assoc)
+ return;
+
+ ifsta->associated = assoc;
+
+ if (assoc) {
+ struct ieee80211_sub_if_data *sdata;
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (sdata->type != IEEE80211_SUB_IF_TYPE_STA)
+ return;
+ ifsta->prev_bssid_set = 1;
+ memcpy(ifsta->prev_bssid, sdata->u.sta.bssid, ETH_ALEN);
+ memcpy(wrqu.ap_addr.sa_data, sdata->u.sta.bssid, ETH_ALEN);
+ ieee80211_sta_send_associnfo(dev, ifsta);
+ } else {
+ memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
+ }
+ wrqu.ap_addr.sa_family = ARPHRD_ETHER;
+ wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
+ ifsta->last_probe = jiffies;
+}
+
+
+static void ieee80211_sta_tx(struct net_device *dev, struct sk_buff *skb,
+ int encrypt, int probe_resp)
+{
+ struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_tx_packet_data *pkt_data;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ skb->dev = sdata->master;
+ skb->mac.raw = skb->nh.raw = skb->h.raw = skb->data;
+
+ pkt_data = (struct ieee80211_tx_packet_data *) skb->cb;
+ memset(pkt_data, 0, sizeof(struct ieee80211_tx_packet_data));
+ pkt_data->magic = IEEE80211_CB_MAGIC;
+ pkt_data->sdata = sdata;
+ pkt_data->control.do_not_encrypt = !encrypt;
+ if (probe_resp)
+ pkt_data->control.pkt_type = PKT_PROBE_RESP;
+
+ dev_queue_xmit(skb);
+}
+
+
+static void ieee80211_send_auth(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta,
+ int transaction, u8 *extra, size_t extra_len,
+ int encrypt)
+{
+ struct sk_buff *skb;
+ struct ieee80211_mgmt *mgmt;
+
+ skb = dev_alloc_skb(sizeof(*mgmt) + 6 + extra_len);
+ if (skb == NULL) {
+ printk(KERN_DEBUG "%s: failed to allocate buffer for auth "
+ "frame\n", dev->name);
+ return;
+ }
+
+ mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6);
+ memset(mgmt, 0, 24 + 6);
+ mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
+ WLAN_FC_STYPE_AUTH);
+ if (encrypt)
+ mgmt->frame_control |= cpu_to_le16(WLAN_FC_ISWEP);
+ memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
+ memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
+ memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
+ mgmt->u.auth.auth_alg = cpu_to_le16(ifsta->auth_alg);
+ mgmt->u.auth.auth_transaction = cpu_to_le16(transaction);
+ ifsta->auth_transaction = transaction + 1;
+ mgmt->u.auth.status_code = cpu_to_le16(0);
+ if (extra)
+ memcpy(skb_put(skb, extra_len), extra, extra_len);
+
+ ieee80211_sta_tx(dev, skb, encrypt, 0);
+}
+
+
+static void ieee80211_authenticate(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta)
+{
+ ifsta->auth_tries++;
+ if (ifsta->auth_tries > IEEE80211_AUTH_MAX_TRIES) {
+ printk(KERN_DEBUG "%s: authentication with AP " MACSTR
+ " timed out\n",
+ dev->name, MAC2STR(ifsta->bssid));
+ return;
+ }
+
+ ifsta->state = IEEE80211_AUTHENTICATE;
+ printk(KERN_DEBUG "%s: authenticate with AP " MACSTR "\n",
+ dev->name, MAC2STR(ifsta->bssid));
+
+ ieee80211_send_auth(dev, ifsta, 1, NULL, 0, 0);
+
+ mod_timer(&ifsta->timer, jiffies + IEEE80211_AUTH_TIMEOUT);
+}
+
+
+static void ieee80211_send_assoc(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct sk_buff *skb;
+ struct ieee80211_mgmt *mgmt;
+ u8 *pos, *ies;
+ int i, len;
+ u16 capab;
+ struct ieee80211_sta_bss *bss;
+ int wmm = 0;
+
+ skb = dev_alloc_skb(sizeof(*mgmt) + 200 + ifsta->extra_ie_len +
+ ifsta->ssid_len);
+ if (skb == NULL) {
+ printk(KERN_DEBUG "%s: failed to allocate buffer for assoc "
+ "frame\n", dev->name);
+ return;
+ }
+
+ capab = ifsta->capab;
+ if (local->conf.phymode == MODE_IEEE80211G) {
+ capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME |
+ WLAN_CAPABILITY_SHORT_PREAMBLE;
+ }
+ bss = ieee80211_rx_bss_get(dev, ifsta->bssid);
+ if (bss) {
+ if (bss->capability & WLAN_CAPABILITY_PRIVACY)
+ capab |= WLAN_CAPABILITY_PRIVACY;
+ if (bss->wmm_ie) {
+ wmm = 1;
+ }
+ ieee80211_rx_bss_put(dev, bss);
+ }
+
+ mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
+ memset(mgmt, 0, 24);
+ memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
+ memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
+ memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
+
+ if (ifsta->prev_bssid_set) {
+ skb_put(skb, 10);
+ mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
+ WLAN_FC_STYPE_REASSOC_REQ);
+ mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab);
+ mgmt->u.reassoc_req.listen_interval = cpu_to_le16(1);
+ memcpy(mgmt->u.reassoc_req.current_ap, ifsta->prev_bssid,
+ ETH_ALEN);
+ } else {
+ skb_put(skb, 4);
+ mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
+ WLAN_FC_STYPE_ASSOC_REQ);
+ mgmt->u.assoc_req.capab_info = cpu_to_le16(capab);
+ mgmt->u.assoc_req.listen_interval = cpu_to_le16(1);
+ }
+
+ /* SSID */
+ ies = pos = skb_put(skb, 2 + ifsta->ssid_len);
+ *pos++ = WLAN_EID_SSID;
+ *pos++ = ifsta->ssid_len;
+ memcpy(pos, ifsta->ssid, ifsta->ssid_len);
+
+ len = local->num_curr_rates;
+ if (len > 8)
+ len = 8;
+ pos = skb_put(skb, len + 2);
+ *pos++ = WLAN_EID_SUPP_RATES;
+ *pos++ = len;
+ for (i = 0; i < len; i++) {
+ int rate = local->curr_rates[i].rate;
+ if (local->conf.phymode == MODE_ATHEROS_TURBO)
+ rate /= 2;
+ *pos++ = (u8) (rate / 5);
+ }
+
+ if (local->num_curr_rates > len) {
+ pos = skb_put(skb, local->num_curr_rates - len + 2);
+ *pos++ = WLAN_EID_EXT_SUPP_RATES;
+ *pos++ = local->num_curr_rates - len;
+ for (i = len; i < local->num_curr_rates; i++) {
+ int rate = local->curr_rates[i].rate;
+ if (local->conf.phymode == MODE_ATHEROS_TURBO)
+ rate /= 2;
+ *pos++ = (u8) (rate / 5);
+ }
+ }
+
+ if (ifsta->extra_ie) {
+ pos = skb_put(skb, ifsta->extra_ie_len);
+ memcpy(pos, ifsta->extra_ie, ifsta->extra_ie_len);
+ }
+
+ if (wmm && ifsta->wmm_enabled) {
+ pos = skb_put(skb, 9);
+ *pos++ = WLAN_EID_VENDOR_SPECIFIC;
+ *pos++ = 7; /* len */
+ *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */
+ *pos++ = 0x50;
+ *pos++ = 0xf2;
+ *pos++ = 2; /* WME */
+ *pos++ = 0; /* WME info */
+ *pos++ = 1; /* WME ver */
+ *pos++ = 0;
+ }
+
+ kfree(ifsta->assocreq_ies);
+ ifsta->assocreq_ies_len = (skb->data + skb->len) - ies;
+ ifsta->assocreq_ies = kmalloc(ifsta->assocreq_ies_len, GFP_ATOMIC);
+ if (ifsta->assocreq_ies)
+ memcpy(ifsta->assocreq_ies, ies, ifsta->assocreq_ies_len);
+
+ ieee80211_sta_tx(dev, skb, 0, 0);
+}
+
+
+static void ieee80211_send_deauth(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta, u16 reason)
+{
+ struct sk_buff *skb;
+ struct ieee80211_mgmt *mgmt;
+
+ skb = dev_alloc_skb(sizeof(*mgmt));
+ if (skb == NULL) {
+ printk(KERN_DEBUG "%s: failed to allocate buffer for deauth "
+ "frame\n", dev->name);
+ return;
+ }
+
+ mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
+ memset(mgmt, 0, 24);
+ memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
+ memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
+ memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
+ mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
+ WLAN_FC_STYPE_DEAUTH);
+ skb_put(skb, 2);
+ mgmt->u.deauth.reason_code = cpu_to_le16(reason);
+
+ ieee80211_sta_tx(dev, skb, 0, 0);
+}
+
+
+static void ieee80211_send_disassoc(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta, u16 reason)
+{
+ struct sk_buff *skb;
+ struct ieee80211_mgmt *mgmt;
+
+ skb = dev_alloc_skb(sizeof(*mgmt));
+ if (skb == NULL) {
+ printk(KERN_DEBUG "%s: failed to allocate buffer for disassoc "
+ "frame\n", dev->name);
+ return;
+ }
+
+ mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
+ memset(mgmt, 0, 24);
+ memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
+ memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
+ memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
+ mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
+ WLAN_FC_STYPE_DISASSOC);
+ skb_put(skb, 2);
+ mgmt->u.disassoc.reason_code = cpu_to_le16(reason);
+
+ ieee80211_sta_tx(dev, skb, 0, 0);
+}
+
+
+static int ieee80211_privacy_mismatch(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta)
+{
+ struct ieee80211_sta_bss *bss;
+ int res = 0;
+
+ if (ifsta == NULL || ifsta->mixed_cell ||
+ ifsta->key_mgmt != IEEE80211_KEY_MGMT_NONE)
+ return 0;
+
+ bss = ieee80211_rx_bss_get(dev, ifsta->bssid);
+ if (bss == NULL)
+ return 0;
+
+ if (ieee80211_sta_wep_configured(dev) !=
+ !!(bss->capability & WLAN_CAPABILITY_PRIVACY))
+ res = 1;
+
+ ieee80211_rx_bss_put(dev, bss);
+
+ return res;
+}
+
+
+static void ieee80211_associate(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta)
+{
+ ifsta->assoc_tries++;
+ if (ifsta->assoc_tries > IEEE80211_ASSOC_MAX_TRIES) {
+ printk(KERN_DEBUG "%s: association with AP " MACSTR
+ " timed out\n",
+ dev->name, MAC2STR(ifsta->bssid));
+ return;
+ }
+
+ ifsta->state = IEEE80211_ASSOCIATE;
+ printk(KERN_DEBUG "%s: associate with AP " MACSTR "\n",
+ dev->name, MAC2STR(ifsta->bssid));
+ if (ieee80211_privacy_mismatch(dev, ifsta)) {
+ printk(KERN_DEBUG "%s: mismatch in privacy configuration and "
+ "mixed-cell disabled - abort association\n", dev->name);
+ return;
+ }
+
+ ieee80211_send_assoc(dev, ifsta);
+
+ mod_timer(&ifsta->timer, jiffies + IEEE80211_ASSOC_TIMEOUT);
+}
+
+
+static void ieee80211_associated(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct sta_info *sta;
+ int disassoc;
+
+ /* TODO: start monitoring current AP signal quality and number of
+ * missed beacons. Scan other channels every now and then and search
+ * for better APs. */
+ /* TODO: remove expired BSSes */
+
+ ifsta->state = IEEE80211_ASSOCIATED;
+
+ sta = sta_info_get(local, ifsta->bssid);
+ if (sta == NULL) {
+ printk(KERN_DEBUG "%s: No STA entry for own AP " MACSTR "\n",
+ dev->name, MAC2STR(ifsta->bssid));
+ disassoc = 1;
+ } else {
+ disassoc = 0;
+ if (time_after(jiffies,
+ sta->last_rx + IEEE80211_MONITORING_INTERVAL)) {
+ if (ifsta->probereq_poll) {
+ printk(KERN_DEBUG "%s: No ProbeResp from "
+ "current AP " MACSTR " - assume out of "
+ "range\n",
+ dev->name, MAC2STR(ifsta->bssid));
+ disassoc = 1;
+ } else {
+ ieee80211_send_probe_req(dev, ifsta->bssid,
+ local->scan_ssid,
+ local->scan_ssid_len);
+ ifsta->probereq_poll = 1;
+ }
+ } else {
+ ifsta->probereq_poll = 0;
+ if (time_after(jiffies, ifsta->last_probe +
+ IEEE80211_PROBE_INTERVAL)) {
+ ifsta->last_probe = jiffies;
+ ieee80211_send_probe_req(dev, ifsta->bssid,
+ ifsta->ssid,
+ ifsta->ssid_len);
+ }
+ }
+ sta_info_release(local, sta);
+ }
+ if (disassoc) {
+ union iwreq_data wrqu;
+ memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
+ wrqu.ap_addr.sa_family = ARPHRD_ETHER;
+ wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
+ mod_timer(&ifsta->timer,
+ jiffies + IEEE80211_MONITORING_INTERVAL + 30 * HZ);
+ } else {
+ mod_timer(&ifsta->timer,
+ jiffies + IEEE80211_MONITORING_INTERVAL);
+ }
+}
+
+
+static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst,
+ u8 *ssid, size_t ssid_len)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct sk_buff *skb;
+ struct ieee80211_mgmt *mgmt;
+ u8 *pos, *supp_rates, *esupp_rates = NULL;
+ int i;
+
+ skb = dev_alloc_skb(sizeof(*mgmt) + 200);
+ if (skb == NULL) {
+ printk(KERN_DEBUG "%s: failed to allocate buffer for probe "
+ "request\n", dev->name);
+ return;
+ }
+
+ mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
+ memset(mgmt, 0, 24);
+ mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
+ WLAN_FC_STYPE_PROBE_REQ);
+ memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
+ if (dst) {
+ memcpy(mgmt->da, dst, ETH_ALEN);
+ memcpy(mgmt->bssid, dst, ETH_ALEN);
+ } else {
+ memset(mgmt->da, 0xff, ETH_ALEN);
+ memset(mgmt->bssid, 0xff, ETH_ALEN);
+ }
+ pos = skb_put(skb, 2 + ssid_len);
+ *pos++ = WLAN_EID_SSID;
+ *pos++ = ssid_len;
+ memcpy(pos, ssid, ssid_len);
+
+ supp_rates = skb_put(skb, 2);
+ supp_rates[0] = WLAN_EID_SUPP_RATES;
+ supp_rates[1] = 0;
+ for (i = 0; i < local->num_curr_rates; i++) {
+ struct ieee80211_rate *rate = &local->curr_rates[i];
+ if (!(rate->flags & IEEE80211_RATE_SUPPORTED))
+ continue;
+ if (esupp_rates) {
+ pos = skb_put(skb, 1);
+ esupp_rates[1]++;
+ } else if (supp_rates[1] == 8) {
+ esupp_rates = skb_put(skb, 3);
+ esupp_rates[0] = WLAN_EID_EXT_SUPP_RATES;
+ esupp_rates[1] = 1;
+ pos = &esupp_rates[2];
+ } else {
+ pos = skb_put(skb, 1);
+ supp_rates[1]++;
+ }
+ if (local->conf.phymode == MODE_ATHEROS_TURBO)
+ *pos = rate->rate / 10;
+ else
+ *pos = rate->rate / 5;
+ }
+
+ ieee80211_sta_tx(dev, skb, 0, 0);
+}
+
+
+static int ieee80211_sta_wep_configured(struct net_device *dev)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (sdata == NULL || sdata->default_key == NULL ||
+ sdata->default_key->alg != ALG_WEP)
+ return 0;
+ return 1;
+}
+
+
+static void ieee80211_auth_completed(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta)
+{
+ printk(KERN_DEBUG "%s: authenticated\n", dev->name);
+ ifsta->authenticated = 1;
+ ieee80211_associate(dev, ifsta);
+}
+
+
+static void ieee80211_auth_challenge(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta,
+ struct ieee80211_mgmt *mgmt,
+ size_t len,
+ struct ieee80211_rx_status *rx_status)
+{
+ u8 *pos;
+ struct ieee802_11_elems elems;
+
+ printk(KERN_DEBUG "%s: replying to auth challenge\n", dev->name);
+ pos = mgmt->u.auth.variable;
+ if (ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems)
+ == ParseFailed) {
+ printk(KERN_DEBUG "%s: failed to parse Auth(challenge)\n",
+ dev->name);
+ return;
+ }
+ if (elems.challenge == NULL) {
+ printk(KERN_DEBUG "%s: no challenge IE in shared key auth "
+ "frame\n", dev->name);
+ return;
+ }
+ ieee80211_send_auth(dev, ifsta, 3, elems.challenge - 2,
+ elems.challenge_len + 2, 1);
+}
+
+
+static void ieee80211_rx_mgmt_auth(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta,
+ struct ieee80211_mgmt *mgmt,
+ size_t len,
+ struct ieee80211_rx_status *rx_status)
+{
+ struct ieee80211_local *local = dev->priv;
+ u16 auth_alg, auth_transaction, status_code;
+
+ if (ifsta->state != IEEE80211_AUTHENTICATE &&
+ local->conf.mode != IW_MODE_ADHOC) {
+ printk(KERN_DEBUG "%s: authentication frame received from "
+ MACSTR ", but not in authenticate state - ignored\n",
+ dev->name, MAC2STR(mgmt->sa));
+ return;
+ }
+
+ if (len < 24 + 6) {
+ printk(KERN_DEBUG "%s: too short (%zd) authentication frame "
+ "received from " MACSTR " - ignored\n",
+ dev->name, len, MAC2STR(mgmt->sa));
+ return;
+ }
+
+ if (local->conf.mode != IW_MODE_ADHOC &&
+ memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) {
+ printk(KERN_DEBUG "%s: authentication frame received from "
+ "unknown AP (SA=" MACSTR " BSSID=" MACSTR ") - "
+ "ignored\n", dev->name, MAC2STR(mgmt->sa),
+ MAC2STR(mgmt->bssid));
+ return;
+ }
+
+ if (local->conf.mode == IW_MODE_ADHOC &&
+ memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0) {
+ printk(KERN_DEBUG "%s: authentication frame received from "
+ "unknown BSSID (SA=" MACSTR " BSSID=" MACSTR ") - "
+ "ignored\n", dev->name, MAC2STR(mgmt->sa),
+ MAC2STR(mgmt->bssid));
+ return;
+ }
+
+ auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg);
+ auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction);
+ status_code = le16_to_cpu(mgmt->u.auth.status_code);
+
+ printk(KERN_DEBUG "%s: RX authentication from " MACSTR " (alg=%d "
+ "transaction=%d status=%d)\n",
+ dev->name, MAC2STR(mgmt->sa), auth_alg,
+ auth_transaction, status_code);
+
+ if (local->conf.mode == IW_MODE_ADHOC) {
+ /* IEEE 802.11 standard does not require authentication in IBSS
+ * networks and most implementations do not seem to use it.
+ * However, try to reply to authentication attempts if someone
+ * has actually implemented this.
+ * TODO: Could implement shared key authentication. */
+ if (auth_alg != WLAN_AUTH_OPEN || auth_transaction != 1) {
+ printk(KERN_DEBUG "%s: unexpected IBSS authentication "
+ "frame (alg=%d transaction=%d)\n",
+ dev->name, auth_alg, auth_transaction);
+ return;
+ }
+ ieee80211_send_auth(dev, ifsta, 2, NULL, 0, 0);
+ }
+
+ if (auth_alg != ifsta->auth_alg ||
+ auth_transaction != ifsta->auth_transaction) {
+ printk(KERN_DEBUG "%s: unexpected authentication frame "
+ "(alg=%d transaction=%d)\n",
+ dev->name, auth_alg, auth_transaction);
+ return;
+ }
+
+ if (status_code != WLAN_STATUS_SUCCESS) {
+ printk(KERN_DEBUG "%s: AP denied authentication (auth_alg=%d "
+ "code=%d)\n", dev->name, ifsta->auth_alg, status_code);
+ if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) {
+ const int num_algs = 3;
+ u8 algs[num_algs];
+ int i, pos;
+ algs[0] = algs[1] = algs[2] = 0xff;
+ if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN)
+ algs[0] = WLAN_AUTH_OPEN;
+ if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY)
+ algs[1] = WLAN_AUTH_SHARED_KEY;
+ if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP)
+ algs[2] = WLAN_AUTH_LEAP;
+ if (ifsta->auth_alg == WLAN_AUTH_OPEN)
+ pos = 0;
+ else if (ifsta->auth_alg == WLAN_AUTH_SHARED_KEY)
+ pos = 1;
+ else
+ pos = 2;
+ for (i = 0; i < num_algs; i++) {
+ pos++;
+ if (pos >= num_algs)
+ pos = 0;
+ if (algs[pos] == ifsta->auth_alg ||
+ algs[pos] == 0xff)
+ continue;
+ if (algs[pos] == WLAN_AUTH_SHARED_KEY &&
+ !ieee80211_sta_wep_configured(dev))
+ continue;
+ ifsta->auth_alg = algs[pos];
+ printk(KERN_DEBUG "%s: set auth_alg=%d for "
+ "next try\n",
+ dev->name, ifsta->auth_alg);
+ break;
+ }
+ }
+ return;
+ }
+
+ switch (ifsta->auth_alg) {
+ case WLAN_AUTH_OPEN:
+ case WLAN_AUTH_LEAP:
+ ieee80211_auth_completed(dev, ifsta);
+ break;
+ case WLAN_AUTH_SHARED_KEY:
+ if (ifsta->auth_transaction == 4)
+ ieee80211_auth_completed(dev, ifsta);
+ else
+ ieee80211_auth_challenge(dev, ifsta, mgmt, len,
+ rx_status);
+ break;
+ }
+}
+
+
+static void ieee80211_rx_mgmt_deauth(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta,
+ struct ieee80211_mgmt *mgmt,
+ size_t len,
+ struct ieee80211_rx_status *rx_status)
+{
+ u16 reason_code;
+
+ if (len < 24 + 2) {
+ printk(KERN_DEBUG "%s: too short (%zd) deauthentication frame "
+ "received from " MACSTR " - ignored\n",
+ dev->name, len, MAC2STR(mgmt->sa));
+ return;
+ }
+
+ if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) {
+ printk(KERN_DEBUG "%s: deauthentication frame received from "
+ "unknown AP (SA=" MACSTR " BSSID=" MACSTR ") - "
+ "ignored\n", dev->name, MAC2STR(mgmt->sa),
+ MAC2STR(mgmt->bssid));
+ return;
+ }
+
+ reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
+
+ printk(KERN_DEBUG "%s: RX deauthentication from " MACSTR
+ " (reason=%d)\n",
+ dev->name, MAC2STR(mgmt->sa), reason_code);
+
+ if (ifsta->authenticated) {
+ printk(KERN_DEBUG "%s: deauthenticated\n", dev->name);
+ }
+
+ if (ifsta->state == IEEE80211_AUTHENTICATE ||
+ ifsta->state == IEEE80211_ASSOCIATE ||
+ ifsta->state == IEEE80211_ASSOCIATED) {
+ ifsta->state = IEEE80211_AUTHENTICATE;
+ mod_timer(&ifsta->timer,
+ jiffies + IEEE80211_RETRY_AUTH_INTERVAL);
+ }
+
+ ieee80211_set_associated(dev, ifsta, 0);
+ ifsta->authenticated = 0;
+}
+
+
+static void ieee80211_rx_mgmt_disassoc(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta,
+ struct ieee80211_mgmt *mgmt,
+ size_t len,
+ struct ieee80211_rx_status *rx_status)
+{
+ u16 reason_code;
+
+ if (len < 24 + 2) {
+ printk(KERN_DEBUG "%s: too short (%zd) disassociation frame "
+ "received from " MACSTR " - ignored\n",
+ dev->name, len, MAC2STR(mgmt->sa));
+ return;
+ }
+
+ if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) {
+ printk(KERN_DEBUG "%s: disassociation frame received from "
+ "unknown AP (SA=" MACSTR " BSSID=" MACSTR ") - "
+ "ignored\n", dev->name, MAC2STR(mgmt->sa),
+ MAC2STR(mgmt->bssid));
+ return;
+ }
+
+ reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
+
+ printk(KERN_DEBUG "%s: RX disassociation from " MACSTR
+ " (reason=%d)\n",
+ dev->name, MAC2STR(mgmt->sa), reason_code);
+
+ if (ifsta->associated)
+ printk(KERN_DEBUG "%s: disassociated\n", dev->name);
+
+ if (ifsta->state == IEEE80211_ASSOCIATED) {
+ ifsta->state = IEEE80211_ASSOCIATE;
+ mod_timer(&ifsta->timer,
+ jiffies + IEEE80211_RETRY_AUTH_INTERVAL);
+ }
+
+ ieee80211_set_associated(dev, ifsta, 0);
+}
+
+
+static void ieee80211_rx_mgmt_assoc_resp(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta,
+ struct ieee80211_mgmt *mgmt,
+ size_t len,
+ struct ieee80211_rx_status *rx_status,
+ int reassoc)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct sta_info *sta;
+ u32 rates;
+ u16 capab_info, status_code, aid;
+ struct ieee802_11_elems elems;
+ u8 *pos;
+ int i, j;
+
+ /* AssocResp and ReassocResp have identical structure, so process both
+ * of them in this function. */
+
+ if (ifsta->state != IEEE80211_ASSOCIATE) {
+ printk(KERN_DEBUG "%s: association frame received from "
+ MACSTR ", but not in associate state - ignored\n",
+ dev->name, MAC2STR(mgmt->sa));
+ return;
+ }
+
+ if (len < 24 + 6) {
+ printk(KERN_DEBUG "%s: too short (%zd) association frame "
+ "received from " MACSTR " - ignored\n",
+ dev->name, len, MAC2STR(mgmt->sa));
+ return;
+ }
+
+ if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) {
+ printk(KERN_DEBUG "%s: association frame received from "
+ "unknown AP (SA=" MACSTR " BSSID=" MACSTR ") - "
+ "ignored\n", dev->name, MAC2STR(mgmt->sa),
+ MAC2STR(mgmt->bssid));
+ return;
+ }
+
+ capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
+ status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
+ aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
+ if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
+ printk(KERN_DEBUG "%s: invalid aid value %d; bits 15:14 not "
+ "set\n", dev->name, aid);
+ aid &= ~(BIT(15) | BIT(14));
+
+ printk(KERN_DEBUG "%s: RX %sssocResp from " MACSTR " (capab=0x%x "
+ "status=%d aid=%d)\n",
+ dev->name, reassoc ? "Rea" : "A", MAC2STR(mgmt->sa),
+ capab_info, status_code, aid);
+
+ if (status_code != WLAN_STATUS_SUCCESS) {
+ printk(KERN_DEBUG "%s: AP denied association (code=%d)\n",
+ dev->name, status_code);
+ return;
+ }
+
+ pos = mgmt->u.assoc_resp.variable;
+ if (ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems)
+ == ParseFailed) {
+ printk(KERN_DEBUG "%s: failed to parse AssocResp\n",
+ dev->name);
+ return;
+ }
+
+ if (elems.supp_rates == NULL) {
+ printk(KERN_DEBUG "%s: no SuppRates element in AssocResp\n",
+ dev->name);
+ return;
+ }
+
+ printk(KERN_DEBUG "%s: associated\n", dev->name);
+ ifsta->aid = aid;
+ ifsta->ap_capab = capab_info;
+
+ kfree(ifsta->assocresp_ies);
+ ifsta->assocresp_ies_len = len - (pos - (u8 *) mgmt);
+ ifsta->assocresp_ies = kmalloc(ifsta->assocresp_ies_len, GFP_ATOMIC);
+ if (ifsta->assocresp_ies)
+ memcpy(ifsta->assocresp_ies, pos, ifsta->assocresp_ies_len);
+
+ ieee80211_set_associated(dev, ifsta, 1);
+
+ /* Add STA entry for the AP */
+ sta = sta_info_get(local, ifsta->bssid);
+ if (sta == NULL) {
+ sta = sta_info_add(local, dev, ifsta->bssid);
+ if (sta == NULL) {
+ printk(KERN_DEBUG "%s: failed to add STA entry for the"
+ " AP\n", dev->name);
+ return;
+ }
+ }
+
+ sta->dev = dev;
+ sta->flags |= WLAN_STA_AUTH | WLAN_STA_ASSOC;
+ sta->assoc_ap = 1;
+
+ rates = 0;
+ for (i = 0; i < elems.supp_rates_len; i++) {
+ int rate = (elems.supp_rates[i] & 0x7f) * 5;
+ if (local->conf.phymode == MODE_ATHEROS_TURBO)
+ rate *= 2;
+ for (j = 0; j < local->num_curr_rates; j++)
+ if (local->curr_rates[j].rate == rate)
+ rates |= BIT(j);
+ }
+ for (i = 0; i < elems.ext_supp_rates_len; i++) {
+ int rate = (elems.ext_supp_rates[i] & 0x7f) * 5;
+ if (local->conf.phymode == MODE_ATHEROS_TURBO)
+ rate *= 2;
+ for (j = 0; j < local->num_curr_rates; j++)
+ if (local->curr_rates[j].rate == rate)
+ rates |= BIT(j);
+ }
+ sta->supp_rates = rates;
+
+ rate_control_rate_init(local, sta);
+
+ if (elems.wmm_param && ifsta->wmm_enabled) {
+ sta->flags |= WLAN_STA_WME;
+ ieee80211_sta_wmm_params(dev, ifsta, elems.wmm_param,
+ elems.wmm_param_len);
+ }
+
+
+ sta_info_release(local, sta);
+
+ ieee80211_associated(dev, ifsta);
+}
+
+
+/* Caller must hold local->sta_bss_lock */
+static void __ieee80211_rx_bss_hash_add(struct net_device *dev,
+ struct ieee80211_sta_bss *bss)
+{
+ struct ieee80211_local *local = dev->priv;
+ bss->hnext = local->sta_bss_hash[STA_HASH(bss->bssid)];
+ local->sta_bss_hash[STA_HASH(bss->bssid)] = bss;
+}
+
+
+/* Caller must hold local->sta_bss_lock */
+static void __ieee80211_rx_bss_hash_del(struct net_device *dev,
+ struct ieee80211_sta_bss *bss)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct ieee80211_sta_bss *b, *prev = NULL;
+ b = local->sta_bss_hash[STA_HASH(bss->bssid)];
+ while (b) {
+ if (b == bss) {
+ if (prev == NULL) {
+ local->sta_bss_hash[STA_HASH(bss->bssid)] =
+ bss->hnext;
+ } else {
+ prev->hnext = bss->hnext;
+ }
+ break;
+ }
+ prev = b;
+ b = b->hnext;
+ }
+}
+
+
+static struct ieee80211_sta_bss *
+ieee80211_rx_bss_add(struct net_device *dev, u8 *bssid)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct ieee80211_sta_bss *bss;
+
+ bss = kmalloc(sizeof(*bss), GFP_ATOMIC);
+ if (bss == NULL)
+ return NULL;
+ memset(bss, 0, sizeof(*bss));
+ atomic_inc(&bss->users);
+ atomic_inc(&bss->users);
+ memcpy(bss->bssid, bssid, ETH_ALEN);
+
+ spin_lock_bh(&local->sta_bss_lock);
+ /* TODO: order by RSSI? */
+ list_add_tail(&bss->list, &local->sta_bss_list);
+ __ieee80211_rx_bss_hash_add(dev, bss);
+ spin_unlock_bh(&local->sta_bss_lock);
+ return bss;
+}
+
+
+static struct ieee80211_sta_bss *
+ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct ieee80211_sta_bss *bss;
+
+ spin_lock_bh(&local->sta_bss_lock);
+ bss = local->sta_bss_hash[STA_HASH(bssid)];
+ while (bss) {
+ if (memcmp(bss->bssid, bssid, ETH_ALEN) == 0) {
+ atomic_inc(&bss->users);
+ break;
+ }
+ bss = bss->hnext;
+ }
+ spin_unlock_bh(&local->sta_bss_lock);
+ return bss;
+}
+
+
+static void ieee80211_rx_bss_free(struct ieee80211_sta_bss *bss)
+{
+ kfree(bss->wpa_ie);
+ kfree(bss->rsn_ie);
+ kfree(bss->wmm_ie);
+ kfree(bss);
+}
+
+
+static void ieee80211_rx_bss_put(struct net_device *dev,
+ struct ieee80211_sta_bss *bss)
+{
+ struct ieee80211_local *local = dev->priv;
+ if (!atomic_dec_and_test(&bss->users))
+ return;
+
+ spin_lock_bh(&local->sta_bss_lock);
+ __ieee80211_rx_bss_hash_del(dev, bss);
+ list_del(&bss->list);
+ spin_unlock_bh(&local->sta_bss_lock);
+ ieee80211_rx_bss_free(bss);
+}
+
+
+void ieee80211_rx_bss_list_init(struct net_device *dev)
+{
+ struct ieee80211_local *local = dev->priv;
+ spin_lock_init(&local->sta_bss_lock);
+ INIT_LIST_HEAD(&local->sta_bss_list);
+}
+
+
+void ieee80211_rx_bss_list_deinit(struct net_device *dev)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct ieee80211_sta_bss *bss;
+ struct list_head *ptr;
+
+ for (;;) {
+ ptr = local->sta_bss_list.next;
+ if (!ptr || ptr == &local->sta_bss_list)
+ break;
+ bss = list_entry(ptr, struct ieee80211_sta_bss, list);
+ ieee80211_rx_bss_put(dev, bss);
+ }
+}
+
+
+static void ieee80211_rx_bss_info(struct net_device *dev,
+ struct ieee80211_mgmt *mgmt,
+ size_t len,
+ struct ieee80211_rx_status *rx_status,
+ int beacon)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct ieee802_11_elems elems;
+ size_t baselen;
+ int channel, invalid = 0, clen;
+ struct ieee80211_sta_bss *bss;
+ struct sta_info *sta;
+ struct ieee80211_sub_if_data *sdata;
+ u64 timestamp;
+ u8 *pos;
+
+ if (!beacon && memcmp(mgmt->da, dev->dev_addr, ETH_ALEN))
+ return; /* ignore ProbeResp to foreign address */
+
+#if 0
+ printk(KERN_DEBUG "%s: RX %s from " MACSTR " to " MACSTR "\n",
+ dev->name, beacon ? "Beacon" : "Probe Response",
+ MAC2STR(mgmt->sa), MAC2STR(mgmt->da));
+#endif
+
+ baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
+ if (baselen > len)
+ return;
+
+ pos = mgmt->u.beacon.timestamp;
+ timestamp = ((u64) pos[7] << 56) | ((u64) pos[6] << 48) |
+ ((u64) pos[5] << 40) | ((u64) pos[4] << 32) |
+ ((u64) pos[3] << 24) | ((u64) pos[2] << 16) |
+ ((u64) pos[1] << 8) | ((u64) pos[0]);
+
+ if (local->conf.mode == IW_MODE_ADHOC && beacon &&
+ memcmp(mgmt->bssid, local->bssid, ETH_ALEN) == 0) {
+#ifdef IEEE80211_IBSS_DEBUG
+ static unsigned long last_tsf_debug = 0;
+ u64 tsf;
+ if (local->hw->get_tsf)
+ tsf = local->hw->get_tsf(local->mdev);
+ else
+ tsf = -1LLU;
+ if (time_after(jiffies, last_tsf_debug + 5 * HZ)) {
+ printk(KERN_DEBUG "RX beacon SA=" MACSTR " BSSID="
+ MACSTR " TSF=0x%llx BCN=0x%llx diff=%lld "
+ "@%ld\n",
+ MAC2STR(mgmt->sa), MAC2STR(mgmt->bssid),
+ tsf, timestamp, tsf - timestamp, jiffies);
+ last_tsf_debug = jiffies;
+ }
+#endif /* IEEE80211_IBSS_DEBUG */
+ }
+
+ if (ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen,
+ &elems) == ParseFailed)
+ invalid = 1;
+
+ if (local->conf.mode == IW_MODE_ADHOC && elems.supp_rates &&
+ memcmp(mgmt->bssid, local->bssid, ETH_ALEN) == 0 &&
+ (sta = sta_info_get(local, mgmt->sa)) &&
+ (sdata = IEEE80211_DEV_TO_SUB_IF(dev)) &&
+ sdata->type == IEEE80211_SUB_IF_TYPE_STA) {
+ struct ieee80211_rate *rates;
+ size_t num_rates;
+ u32 supp_rates, prev_rates;
+ int i, j, oper_mode;
+
+ rates = local->curr_rates;
+ num_rates = local->num_curr_rates;
+ oper_mode = local->sta_scanning ? local->scan_oper_phymode :
+ local->conf.phymode;
+ for (i = 0; i < local->hw->num_modes; i++) {
+ struct ieee80211_hw_modes *mode = &local->hw->modes[i];
+ if (oper_mode == mode->mode) {
+ rates = mode->rates;
+ num_rates = mode->num_rates;
+ break;
+ }
+ }
+
+ supp_rates = 0;
+ for (i = 0; i < elems.supp_rates_len +
+ elems.ext_supp_rates_len; i++) {
+ u8 rate = 0;
+ int own_rate;
+ if (i < elems.supp_rates_len)
+ rate = elems.supp_rates[i];
+ else if (elems.ext_supp_rates)
+ rate = elems.ext_supp_rates
+ [i - elems.supp_rates_len];
+ own_rate = 5 * (rate & 0x7f);
+ if (oper_mode == MODE_ATHEROS_TURBO)
+ own_rate *= 2;
+ for (j = 0; j < num_rates; j++)
+ if (rates[j].rate == own_rate)
+ supp_rates |= BIT(j);
+ }
+
+ prev_rates = sta->supp_rates;
+ sta->supp_rates &= supp_rates;
+ if (sta->supp_rates == 0) {
+ /* No matching rates - this should not really happen.
+ * Make sure that at least one rate is marked
+ * supported to avoid issues with TX rate ctrl. */
+
+ sta->supp_rates = sdata->u.sta.supp_rates_bits;
+ }
+ if (sta->supp_rates != prev_rates) {
+ printk(KERN_DEBUG "%s: updated supp_rates set for "
+ MACSTR " based on beacon info (0x%x & 0x%x -> "
+ "0x%x)\n",
+ dev->name, MAC2STR(sta->addr), prev_rates,
+ supp_rates, sta->supp_rates);
+ }
+ sta_info_release(local, sta);
+ }
+
+ if (elems.ssid == NULL)
+ return;
+
+ if (elems.ds_params && elems.ds_params_len == 1)
+ channel = elems.ds_params[0];
+ else
+ channel = rx_status->channel;
+
+ bss = ieee80211_rx_bss_get(dev, mgmt->bssid);
+ if (bss == NULL) {
+ bss = ieee80211_rx_bss_add(dev, mgmt->bssid);
+ if (bss == NULL)
+ return;
+ } else {
+#if 0
+ /* TODO: order by RSSI? */
+ spin_lock_bh(&local->sta_bss_lock);
+ list_move_tail(&bss->list, &local->sta_bss_list);
+ spin_unlock_bh(&local->sta_bss_lock);
+#endif
+ }
+
+ if (bss->probe_resp && beacon) {
+ /* Do not allow beacon to override data from Probe Response. */
+ ieee80211_rx_bss_put(dev, bss);
+ return;
+ }
+
+ bss->beacon_int = le16_to_cpu(mgmt->u.beacon.beacon_int);
+ bss->capability = le16_to_cpu(mgmt->u.beacon.capab_info);
+ if (elems.ssid && elems.ssid_len <= IEEE80211_MAX_SSID_LEN) {
+ memcpy(bss->ssid, elems.ssid, elems.ssid_len);
+ bss->ssid_len = elems.ssid_len;
+ }
+
+ bss->supp_rates_len = 0;
+ if (elems.supp_rates) {
+ clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len;
+ if (clen > elems.supp_rates_len)
+ clen = elems.supp_rates_len;
+ memcpy(&bss->supp_rates[bss->supp_rates_len], elems.supp_rates,
+ clen);
+ bss->supp_rates_len += clen;
+ }
+ if (elems.ext_supp_rates) {
+ clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len;
+ if (clen > elems.ext_supp_rates_len)
+ clen = elems.ext_supp_rates_len;
+ memcpy(&bss->supp_rates[bss->supp_rates_len],
+ elems.ext_supp_rates, clen);
+ bss->supp_rates_len += clen;
+ }
+
+ if (elems.wpa &&
+ (bss->wpa_ie == NULL || bss->wpa_ie_len != elems.wpa_len ||
+ memcmp(bss->wpa_ie, elems.wpa, elems.wpa_len))) {
+ kfree(bss->wpa_ie);
+ bss->wpa_ie = kmalloc(elems.wpa_len + 2, GFP_ATOMIC);
+ if (bss->wpa_ie) {
+ memcpy(bss->wpa_ie, elems.wpa - 2, elems.wpa_len + 2);
+ bss->wpa_ie_len = elems.wpa_len + 2;
+ } else
+ bss->wpa_ie_len = 0;
+ } else if (!elems.wpa && bss->wpa_ie) {
+ kfree(bss->wpa_ie);
+ bss->wpa_ie = NULL;
+ bss->wpa_ie_len = 0;
+ }
+
+ if (elems.rsn &&
+ (bss->rsn_ie == NULL || bss->rsn_ie_len != elems.rsn_len ||
+ memcmp(bss->rsn_ie, elems.rsn, elems.rsn_len))) {
+ kfree(bss->rsn_ie);
+ bss->rsn_ie = kmalloc(elems.rsn_len + 2, GFP_ATOMIC);
+ if (bss->rsn_ie) {
+ memcpy(bss->rsn_ie, elems.rsn - 2, elems.rsn_len + 2);
+ bss->rsn_ie_len = elems.rsn_len + 2;
+ } else
+ bss->rsn_ie_len = 0;
+ } else if (!elems.rsn && bss->rsn_ie) {
+ kfree(bss->rsn_ie);
+ bss->rsn_ie = NULL;
+ bss->rsn_ie_len = 0;
+ }
+
+ if (elems.wmm_param &&
+ (bss->wmm_ie == NULL || bss->wmm_ie_len != elems.wmm_param_len ||
+ memcmp(bss->wmm_ie, elems.wmm_param, elems.wmm_param_len))) {
+ kfree(bss->wmm_ie);
+ bss->wmm_ie = kmalloc(elems.wmm_param_len + 2, GFP_ATOMIC);
+ if (bss->wmm_ie) {
+ memcpy(bss->wmm_ie, elems.wmm_param - 2,
+ elems.wmm_param_len + 2);
+ bss->wmm_ie_len = elems.wmm_param_len + 2;
+ } else
+ bss->wmm_ie_len = 0;
+ } else if (!elems.wmm_param && bss->wmm_ie) {
+ kfree(bss->wmm_ie);
+ bss->wmm_ie = NULL;
+ bss->wmm_ie_len = 0;
+ }
+
+
+ bss->hw_mode = local->conf.phymode;
+ bss->channel = channel;
+ bss->freq = local->conf.freq;
+ if (channel != local->conf.channel &&
+ (local->conf.phymode == MODE_IEEE80211G ||
+ local->conf.phymode == MODE_IEEE80211B) &&
+ channel >= 1 && channel <= 14) {
+ static const int freq_list[] = {
+ 2412, 2417, 2422, 2427, 2432, 2437, 2442,
+ 2447, 2452, 2457, 2462, 2467, 2472, 2484
+ };
+ /* IEEE 802.11g/b mode can receive packets from neighboring
+ * channels, so map the channel into frequency. */
+ bss->freq = freq_list[channel - 1];
+ }
+ bss->timestamp = timestamp;
+ bss->last_update = jiffies;
+ bss->rssi = rx_status->ssi;
+ if (!beacon)
+ bss->probe_resp++;
+ ieee80211_rx_bss_put(dev, bss);
+}
+
+
+static void ieee80211_rx_mgmt_probe_resp(struct net_device *dev,
+ struct ieee80211_mgmt *mgmt,
+ size_t len,
+ struct ieee80211_rx_status *rx_status)
+{
+ ieee80211_rx_bss_info(dev, mgmt, len, rx_status, 0);
+}
+
+
+static void ieee80211_rx_mgmt_beacon(struct net_device *dev,
+ struct ieee80211_mgmt *mgmt,
+ size_t len,
+ struct ieee80211_rx_status *rx_status)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_if_sta *ifsta;
+ int use_protection;
+ size_t baselen;
+ struct ieee802_11_elems elems;
+
+ ieee80211_rx_bss_info(dev, mgmt, len, rx_status, 1);
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (sdata->type != IEEE80211_SUB_IF_TYPE_STA)
+ return;
+ ifsta = &sdata->u.sta;
+
+ if (!ifsta->associated ||
+ memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0)
+ return;
+
+ /* Process beacon from the current BSS */
+ baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
+ if (baselen > len)
+ return;
+
+ if (ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen,
+ &elems) == ParseFailed)
+ return;
+
+ use_protection = 0;
+ if (elems.erp_info && elems.erp_info_len >= 1) {
+ use_protection =
+ (elems.erp_info[0] & ERP_INFO_USE_PROTECTION) != 0;
+ }
+
+ if (use_protection != !!ifsta->use_protection) {
+ if (net_ratelimit()) {
+ printk(KERN_DEBUG "%s: CTS protection %s (BSSID="
+ MACSTR ")\n",
+ dev->name,
+ use_protection ? "enabled" : "disabled",
+ MAC2STR(ifsta->bssid));
+ }
+ ifsta->use_protection = use_protection ? 1 : 0;
+ local->cts_protect_erp_frames = use_protection;
+ }
+
+ if (elems.wmm_param && ifsta->wmm_enabled) {
+ ieee80211_sta_wmm_params(dev, ifsta, elems.wmm_param,
+ elems.wmm_param_len);
+ }
+}
+
+
+static void ieee80211_rx_mgmt_probe_req(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta,
+ struct ieee80211_mgmt *mgmt,
+ size_t len,
+ struct ieee80211_rx_status *rx_status)
+{
+ struct ieee80211_local *local = dev->priv;
+ int tx_last_beacon;
+ struct sk_buff *skb;
+ struct ieee80211_mgmt *resp;
+ u8 *pos, *end;
+
+ if (local->conf.mode != IW_MODE_ADHOC ||
+ ifsta->state != IEEE80211_IBSS_JOINED ||
+ len < 24 + 2 || ifsta->probe_resp == NULL)
+ return;
+
+ if (local->hw->tx_last_beacon)
+ tx_last_beacon = local->hw->tx_last_beacon(local->mdev);
+ else
+ tx_last_beacon = 1;
+
+#ifdef IEEE80211_IBSS_DEBUG
+ printk(KERN_DEBUG "%s: RX ProbeReq SA=" MACSTR " DA=" MACSTR " BSSID="
+ MACSTR " (tx_last_beacon=%d)\n",
+ dev->name, MAC2STR(mgmt->sa), MAC2STR(mgmt->da),
+ MAC2STR(mgmt->bssid), tx_last_beacon);
+#endif /* IEEE80211_IBSS_DEBUG */
+
+ if (!tx_last_beacon)
+ return;
+
+ if (memcmp(mgmt->bssid, ifsta->bssid, ETH_ALEN) != 0 &&
+ memcmp(mgmt->bssid, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
+ return;
+
+ end = ((u8 *) mgmt) + len;
+ pos = mgmt->u.probe_req.variable;
+ if (pos[0] != WLAN_EID_SSID ||
+ pos + 2 + pos[1] > end) {
+ if (net_ratelimit()) {
+ printk(KERN_DEBUG "%s: Invalid SSID IE in ProbeReq "
+ "from " MACSTR "\n",
+ dev->name, MAC2STR(mgmt->sa));
+ }
+ return;
+ }
+ if (pos[1] != 0 &&
+ (pos[1] != ifsta->ssid_len ||
+ memcmp(pos + 2, ifsta->ssid, ifsta->ssid_len) != 0)) {
+ /* Ignore ProbeReq for foreign SSID */
+ return;
+ }
+
+ /* Reply with ProbeResp */
+ skb = skb_copy(ifsta->probe_resp, GFP_ATOMIC);
+ if (skb == NULL)
+ return;
+
+ resp = (struct ieee80211_mgmt *) skb->data;
+ memcpy(resp->da, mgmt->sa, ETH_ALEN);
+#ifdef IEEE80211_IBSS_DEBUG
+ printk(KERN_DEBUG "%s: Sending ProbeResp to " MACSTR "\n",
+ dev->name, MAC2STR(resp->da));
+#endif /* IEEE80211_IBSS_DEBUG */
+ ieee80211_sta_tx(dev, skb, 0, 1);
+}
+
+
+void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb,
+ struct ieee80211_rx_status *rx_status)
+{
+ struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_if_sta *ifsta;
+ struct ieee80211_mgmt *mgmt;
+ u16 fc;
+
+ if (skb->len < 24)
+ goto fail;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (sdata->type != IEEE80211_SUB_IF_TYPE_STA) {
+ printk(KERN_DEBUG "%s: ieee80211_sta_rx_mgmt: non-STA "
+ "interface (type=%d)\n", dev->name, sdata->type);
+ goto fail;
+ }
+ ifsta = &sdata->u.sta;
+
+ mgmt = (struct ieee80211_mgmt *) skb->data;
+ fc = le16_to_cpu(mgmt->frame_control);
+
+ switch (WLAN_FC_GET_STYPE(fc)) {
+ case WLAN_FC_STYPE_PROBE_REQ:
+ ieee80211_rx_mgmt_probe_req(dev, ifsta, mgmt, skb->len,
+ rx_status);
+ break;
+ case WLAN_FC_STYPE_PROBE_RESP:
+ ieee80211_rx_mgmt_probe_resp(dev, mgmt, skb->len, rx_status);
+ break;
+ case WLAN_FC_STYPE_BEACON:
+ ieee80211_rx_mgmt_beacon(dev, mgmt, skb->len, rx_status);
+ break;
+ case WLAN_FC_STYPE_AUTH:
+ ieee80211_rx_mgmt_auth(dev, ifsta, mgmt, skb->len, rx_status);
+ break;
+ case WLAN_FC_STYPE_ASSOC_RESP:
+ ieee80211_rx_mgmt_assoc_resp(dev, ifsta, mgmt, skb->len,
+ rx_status, 0);
+ break;
+ case WLAN_FC_STYPE_REASSOC_RESP:
+ ieee80211_rx_mgmt_assoc_resp(dev, ifsta, mgmt, skb->len,
+ rx_status, 1);
+ break;
+ case WLAN_FC_STYPE_DEAUTH:
+ ieee80211_rx_mgmt_deauth(dev, ifsta, mgmt, skb->len,
+ rx_status);
+ break;
+ case WLAN_FC_STYPE_DISASSOC:
+ ieee80211_rx_mgmt_disassoc(dev, ifsta, mgmt, skb->len,
+ rx_status);
+ break;
+ default:
+ printk(KERN_DEBUG "%s: received unknown management frame - "
+ "stype=%d\n", dev->name, WLAN_FC_GET_STYPE(fc));
+ break;
+ }
+
+ fail:
+ dev_kfree_skb(skb);
+}
+
+
+void ieee80211_sta_rx_scan(struct net_device *dev, struct sk_buff *skb,
+ struct ieee80211_rx_status *rx_status)
+{
+ struct ieee80211_mgmt *mgmt;
+ u16 fc;
+
+ if (skb->len < 24) {
+ dev_kfree_skb(skb);
+ return;
+ }
+
+ mgmt = (struct ieee80211_mgmt *) skb->data;
+ fc = le16_to_cpu(mgmt->frame_control);
+
+ if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT) {
+ if (WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
+ ieee80211_rx_mgmt_probe_resp(dev, mgmt,
+ skb->len, rx_status);
+ } else if (WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON) {
+ ieee80211_rx_mgmt_beacon(dev, mgmt, skb->len,
+ rx_status);
+ }
+ }
+
+ dev_kfree_skb(skb);
+}
+
+
+static int ieee80211_sta_active_ibss(struct net_device *dev)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct list_head *ptr;
+ int active = 0;
+ struct sta_info *sta;
+
+ spin_lock_bh(&local->sta_lock);
+ list_for_each(ptr, &local->sta_list) {
+ sta = list_entry(ptr, struct sta_info, list);
+ if (sta->dev == dev &&
+ time_after(sta->last_rx + IEEE80211_IBSS_MERGE_INTERVAL,
+ jiffies)) {
+ active++;
+ break;
+ }
+ }
+ spin_unlock_bh(&local->sta_lock);
+
+ return active;
+}
+
+
+static void ieee80211_sta_expire(struct net_device *dev)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct list_head *ptr, *n;
+ struct sta_info *sta;
+
+ spin_lock_bh(&local->sta_lock);
+ list_for_each_safe(ptr, n, &local->sta_list) {
+ sta = list_entry(ptr, struct sta_info, list);
+ if (time_after(jiffies, sta->last_rx +
+ IEEE80211_IBSS_INACTIVITY_LIMIT)) {
+ printk(KERN_DEBUG "%s: expiring inactive STA " MACSTR
+ "\n", dev->name, MAC2STR(sta->addr));
+ sta_info_free(local, sta, 1);
+ }
+ }
+ spin_unlock_bh(&local->sta_lock);
+}
+
+
+static void ieee80211_sta_merge_ibss(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta)
+{
+ mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL);
+
+ ieee80211_sta_expire(dev);
+ if (ieee80211_sta_active_ibss(dev))
+ return;
+
+ printk(KERN_DEBUG "%s: No active IBSS STAs - trying to scan for other "
+ "IBSS networks with same SSID (merge)\n", dev->name);
+ ieee80211_sta_req_scan(dev, ifsta->ssid, ifsta->ssid_len);
+}
+
+
+void ieee80211_sta_timer(unsigned long ptr)
+{
+ struct net_device *dev;
+ struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_if_sta *ifsta;
+
+ dev = (struct net_device *) ptr;
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (sdata->type != IEEE80211_SUB_IF_TYPE_STA) {
+ printk(KERN_DEBUG "%s: ieee80211_sta_timer: non-STA interface "
+ "(type=%d)\n", dev->name, sdata->type);
+ return;
+ }
+ ifsta = &sdata->u.sta;
+
+ switch (ifsta->state) {
+ case IEEE80211_DISABLED:
+ break;
+ case IEEE80211_AUTHENTICATE:
+ ieee80211_authenticate(dev, ifsta);
+ break;
+ case IEEE80211_ASSOCIATE:
+ ieee80211_associate(dev, ifsta);
+ break;
+ case IEEE80211_ASSOCIATED:
+ ieee80211_associated(dev, ifsta);
+ break;
+ case IEEE80211_IBSS_SEARCH:
+ ieee80211_sta_find_ibss(dev, ifsta);
+ break;
+ case IEEE80211_IBSS_JOINED:
+ ieee80211_sta_merge_ibss(dev, ifsta);
+ break;
+ default:
+ printk(KERN_DEBUG "ieee80211_sta_timer: Unknown state %d\n",
+ ifsta->state);
+ break;
+ }
+
+ if (ieee80211_privacy_mismatch(dev, ifsta)) {
+ printk(KERN_DEBUG "%s: privacy configuration mismatch and "
+ "mixed-cell disabled - disassociate\n", dev->name);
+
+ ieee80211_send_disassoc(dev, ifsta, WLAN_REASON_UNSPECIFIED);
+ ieee80211_set_associated(dev, ifsta, 0);
+ }
+}
+
+
+static void ieee80211_sta_new_auth(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta)
+{
+ struct ieee80211_local *local = dev->priv;
+
+ if (local->conf.mode != IW_MODE_INFRA)
+ return;
+
+ if (local->hw->reset_tsf) {
+ /* Reset own TSF to allow time synchronization work. */
+ local->hw->reset_tsf(local->mdev);
+ }
+
+ ifsta->wmm_last_param_set = -1; /* allow any WMM update */
+
+
+ if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN)
+ ifsta->auth_alg = WLAN_AUTH_OPEN;
+ else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY)
+ ifsta->auth_alg = WLAN_AUTH_SHARED_KEY;
+ else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP)
+ ifsta->auth_alg = WLAN_AUTH_LEAP;
+ else
+ ifsta->auth_alg = WLAN_AUTH_OPEN;
+ printk(KERN_DEBUG "%s: Initial auth_alg=%d\n", dev->name,
+ ifsta->auth_alg);
+ ifsta->auth_transaction = -1;
+ ifsta->auth_tries = ifsta->assoc_tries = 0;
+ ieee80211_authenticate(dev, ifsta);
+}
+
+
+static int ieee80211_ibss_allowed(struct ieee80211_local *local)
+{
+ int m, c;
+
+ for (m = 0; m < local->hw->num_modes; m++) {
+ struct ieee80211_hw_modes *mode = &local->hw->modes[m];
+ if (mode->mode != local->conf.phymode)
+ continue;
+ for (c = 0; c < mode->num_channels; c++) {
+ struct ieee80211_channel *chan = &mode->channels[c];
+ if (chan->flag & IEEE80211_CHAN_W_SCAN &&
+ chan->chan == local->conf.channel) {
+ if (chan->flag & IEEE80211_CHAN_W_IBSS)
+ return 1;
+ break;
+ }
+ }
+ }
+
+ return 0;
+}
+
+
+extern int ieee80211_ioctl_siwfreq(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_freq *freq, char *extra);
+
+static int ieee80211_sta_join_ibss(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta,
+ struct ieee80211_sta_bss *bss)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct iw_freq rq;
+ int res, rates, i, j;
+ struct sk_buff *skb;
+ struct ieee80211_mgmt *mgmt;
+ struct ieee80211_tx_control control;
+ struct ieee80211_rate *rate;
+ struct rate_control_extra extra;
+ u8 *pos;
+ struct ieee80211_sub_if_data *sdata;
+
+ /* Remove possible STA entries from other IBSS networks. */
+ sta_info_flush(local, NULL);
+
+ if (local->hw->reset_tsf) {
+ /* Reset own TSF to allow time synchronization work. */
+ local->hw->reset_tsf(local->mdev);
+ }
+ memcpy(ifsta->bssid, bss->bssid, ETH_ALEN);
+ memcpy(local->bssid, bss->bssid, ETH_ALEN);
+ memcpy(local->conf.client_bssid, bss->bssid, ETH_ALEN);
+
+ local->conf.beacon_int = bss->beacon_int >= 10 ? bss->beacon_int : 10;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ sdata->drop_unencrypted = bss->capability &
+ cpu_to_le16(WLAN_CAPABILITY_PRIVACY) ? 1 : 0;
+
+ memset(&rq, 0, sizeof(rq));
+ rq.m = bss->freq * 100000;
+ rq.e = 1;
+ res = ieee80211_ioctl_siwfreq(dev, NULL, &rq, NULL);
+
+ if (!ieee80211_ibss_allowed(local)) {
+ printk(KERN_DEBUG "%s: IBSS not allowed on channel %d "
+ "(%d MHz)\n", dev->name, local->conf.channel,
+ local->conf.freq);
+ return -1;
+ }
+
+ /* Set beacon template based on scan results */
+ skb = dev_alloc_skb(400);
+ do {
+ if (skb == NULL)
+ break;
+
+ mgmt = (struct ieee80211_mgmt *)
+ skb_put(skb, 24 + sizeof(mgmt->u.beacon));
+ memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon));
+ mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
+ WLAN_FC_STYPE_BEACON);
+ memset(mgmt->da, 0xff, ETH_ALEN);
+ memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
+ memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
+ mgmt->u.beacon.beacon_int =
+ cpu_to_le16(local->conf.beacon_int);
+ mgmt->u.beacon.capab_info = cpu_to_le16(bss->capability);
+
+ pos = skb_put(skb, 2 + ifsta->ssid_len);
+ *pos++ = WLAN_EID_SSID;
+ *pos++ = ifsta->ssid_len;
+ memcpy(pos, ifsta->ssid, ifsta->ssid_len);
+
+ rates = bss->supp_rates_len;
+ if (rates > 8)
+ rates = 8;
+ pos = skb_put(skb, 2 + rates);
+ *pos++ = WLAN_EID_SUPP_RATES;
+ *pos++ = rates;
+ memcpy(pos, bss->supp_rates, rates);
+
+ pos = skb_put(skb, 2 + 1);
+ *pos++ = WLAN_EID_DS_PARAMS;
+ *pos++ = 1;
+ *pos++ = bss->channel;
+
+ pos = skb_put(skb, 2 + 2);
+ *pos++ = WLAN_EID_IBSS_PARAMS;
+ *pos++ = 2;
+ /* FIX: set ATIM window based on scan results */
+ *pos++ = 0;
+ *pos++ = 0;
+
+ if (bss->supp_rates_len > 8) {
+ rates = bss->supp_rates_len - 8;
+ pos = skb_put(skb, 2 + rates);
+ *pos++ = WLAN_EID_EXT_SUPP_RATES;
+ *pos++ = rates;
+ memcpy(pos, &bss->supp_rates[8], rates);
+ }
+
+ memset(&control, 0, sizeof(control));
+ control.pkt_type = PKT_PROBE_RESP;
+ memset(&extra, 0, sizeof(extra));
+ extra.endidx = local->num_curr_rates;
+ rate = rate_control_get_rate(dev, skb, &extra);
+ if (rate == NULL) {
+ printk(KERN_DEBUG "%s: Failed to determine TX rate "
+ "for IBSS beacon\n", dev->name);
+ break;
+ }
+ control.tx_rate = (local->short_preamble &&
+ (rate->flags & IEEE80211_RATE_PREAMBLE2)) ?
+ rate->val2 : rate->val;
+ control.antenna_sel = local->conf.antenna_sel;
+ control.power_level = local->conf.power_level;
+ control.no_ack = 1;
+ control.retry_limit = 1;
+ control.rts_cts_duration = 0;
+
+ ifsta->probe_resp = skb_copy(skb, GFP_ATOMIC);
+ if (ifsta->probe_resp) {
+ mgmt = (struct ieee80211_mgmt *)
+ ifsta->probe_resp->data;
+ mgmt->frame_control =
+ IEEE80211_FC(WLAN_FC_TYPE_MGMT,
+ WLAN_FC_STYPE_PROBE_RESP);
+ } else {
+ printk(KERN_DEBUG "%s: Could not allocate ProbeResp "
+ "template for IBSS\n", dev->name);
+ }
+
+ if (local->hw->beacon_update &&
+ local->hw->beacon_update(dev, skb, &control) == 0) {
+ printk(KERN_DEBUG "%s: Configured IBSS beacon "
+ "template based on scan results\n", dev->name);
+ skb = NULL;
+ }
+
+ rates = 0;
+ for (i = 0; i < bss->supp_rates_len; i++) {
+ int rate = (bss->supp_rates[i] & 0x7f) * 5;
+ if (local->conf.phymode == MODE_ATHEROS_TURBO)
+ rate *= 2;
+ for (j = 0; j < local->num_curr_rates; j++)
+ if (local->curr_rates[j].rate == rate)
+ rates |= BIT(j);
+ }
+ ifsta->supp_rates_bits = rates;
+ } while (0);
+
+ if (skb) {
+ printk(KERN_DEBUG "%s: Failed to configure IBSS beacon "
+ "template\n", dev->name);
+ dev_kfree_skb(skb);
+ }
+
+ ifsta->state = IEEE80211_IBSS_JOINED;
+ mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL);
+
+ ieee80211_rx_bss_put(dev, bss);
+
+ return res;
+}
+
+
+static int ieee80211_sta_create_ibss(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct ieee80211_sta_bss *bss;
+ struct ieee80211_sub_if_data *sdata;
+ u8 bssid[ETH_ALEN], *pos;
+ int i;
+
+#if 0
+ /* Easier testing, use fixed BSSID. */
+ memset(bssid, 0xfe, ETH_ALEN);
+#else
+ /* Generate random, not broadcast, locally administered BSSID. Mix in
+ * own MAC address to make sure that devices that do not have proper
+ * random number generator get different BSSID. */
+ get_random_bytes(bssid, ETH_ALEN);
+ for (i = 0; i < ETH_ALEN; i++)
+ bssid[i] ^= dev->dev_addr[i];
+ bssid[0] &= ~0x01;
+ bssid[0] |= 0x02;
+#endif
+
+ printk(KERN_DEBUG "%s: Creating new IBSS network, BSSID " MACSTR "\n",
+ dev->name, MAC2STR(bssid));
+
+ bss = ieee80211_rx_bss_add(dev, bssid);
+ if (bss == NULL)
+ return -ENOMEM;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ if (local->conf.beacon_int == 0)
+ local->conf.beacon_int = 100;
+ bss->beacon_int = local->conf.beacon_int;
+ bss->hw_mode = local->conf.phymode;
+ bss->channel = local->conf.channel;
+ bss->freq = local->conf.freq;
+ bss->last_update = jiffies;
+ bss->capability = cpu_to_le16(WLAN_CAPABILITY_IBSS);
+ if (sdata->default_key) {
+ bss->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
+ } else
+ sdata->drop_unencrypted = 0;
+ bss->supp_rates_len = local->num_curr_rates;
+ pos = bss->supp_rates;
+ for (i = 0; i < local->num_curr_rates; i++) {
+ int rate = local->curr_rates[i].rate;
+ if (local->conf.phymode == MODE_ATHEROS_TURBO)
+ rate /= 2;
+ *pos++ = (u8) (rate / 5);
+ }
+
+ return ieee80211_sta_join_ibss(dev, ifsta, bss);
+}
+
+
+static int ieee80211_sta_find_ibss(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct ieee80211_sta_bss *bss;
+ int found = 0;
+ u8 bssid[ETH_ALEN];
+ struct list_head *ptr;
+ int active_ibss;
+
+ if (ifsta->ssid_len == 0)
+ return -EINVAL;
+
+ active_ibss = ieee80211_sta_active_ibss(dev);
+#ifdef IEEE80211_IBSS_DEBUG
+ printk(KERN_DEBUG "%s: sta_find_ibss (active_ibss=%d)\n",
+ dev->name, active_ibss);
+#endif /* IEEE80211_IBSS_DEBUG */
+ spin_lock_bh(&local->sta_bss_lock);
+ list_for_each(ptr, &local->sta_bss_list) {
+ bss = list_entry(ptr, struct ieee80211_sta_bss, list);
+ if (ifsta->ssid_len != bss->ssid_len ||
+ memcmp(ifsta->ssid, bss->ssid, bss->ssid_len) != 0
+ || !(bss->capability & WLAN_CAPABILITY_IBSS))
+ continue;
+#ifdef IEEE80211_IBSS_DEBUG
+ printk(KERN_DEBUG " bssid=" MACSTR " found\n",
+ MAC2STR(bss->bssid));
+#endif /* IEEE80211_IBSS_DEBUG */
+ memcpy(bssid, bss->bssid, ETH_ALEN);
+ found = 1;
+ if (active_ibss || memcmp(bssid, ifsta->bssid, ETH_ALEN) != 0)
+ break;
+ }
+ spin_unlock_bh(&local->sta_bss_lock);
+
+#ifdef IEEE80211_IBSS_DEBUG
+ printk(KERN_DEBUG " sta_find_ibss: selected " MACSTR " current "
+ MACSTR "\n", MAC2STR(bssid), MAC2STR(ifsta->bssid));
+#endif /* IEEE80211_IBSS_DEBUG */
+ if (found && memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0 &&
+ (bss = ieee80211_rx_bss_get(dev, bssid))) {
+ printk(KERN_DEBUG "%s: Selected IBSS BSSID " MACSTR
+ " based on configured SSID\n",
+ dev->name, MAC2STR(bssid));
+ return ieee80211_sta_join_ibss(dev, ifsta, bss);
+ }
+#ifdef IEEE80211_IBSS_DEBUG
+ printk(KERN_DEBUG " did not try to join ibss\n");
+#endif /* IEEE80211_IBSS_DEBUG */
+
+ /* Selected IBSS not found in current scan results - try to scan */
+ if (ifsta->state == IEEE80211_IBSS_JOINED &&
+ !ieee80211_sta_active_ibss(dev)) {
+ mod_timer(&ifsta->timer,
+ jiffies + IEEE80211_IBSS_MERGE_INTERVAL);
+ } else if (time_after(jiffies, local->last_scan_completed +
+ IEEE80211_SCAN_INTERVAL)) {
+ printk(KERN_DEBUG "%s: Trigger new scan to find an IBSS to "
+ "join\n", dev->name);
+ return ieee80211_sta_req_scan(dev, ifsta->ssid,
+ ifsta->ssid_len);
+ } else if (ifsta->state != IEEE80211_IBSS_JOINED) {
+ int interval = IEEE80211_SCAN_INTERVAL;
+
+ if (time_after(jiffies, ifsta->ibss_join_req +
+ IEEE80211_IBSS_JOIN_TIMEOUT)) {
+ if (ifsta->create_ibss &&
+ ieee80211_ibss_allowed(local))
+ return ieee80211_sta_create_ibss(dev, ifsta);
+ if (ifsta->create_ibss) {
+ printk(KERN_DEBUG "%s: IBSS not allowed on the"
+ " configured channel %d (%d MHz)\n",
+ dev->name, local->conf.channel,
+ local->conf.freq);
+ }
+
+ /* No IBSS found - decrease scan interval and continue
+ * scanning. */
+ interval = IEEE80211_SCAN_INTERVAL_SLOW;
+ }
+
+ ifsta->state = IEEE80211_IBSS_SEARCH;
+ mod_timer(&ifsta->timer, jiffies + interval);
+ return 0;
+ }
+
+ return 0;
+}
+
+
+int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len)
+{
+ struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_if_sta *ifsta;
+ struct ieee80211_local *local = dev->priv;
+
+ if (len > IEEE80211_MAX_SSID_LEN)
+ return -EINVAL;
+
+ /* TODO: This should always be done for IBSS, even if IEEE80211_QOS is
+ * not defined. */
+ if (local->hw->conf_tx) {
+ struct ieee80211_tx_queue_params qparam;
+ int i;
+
+ memset(&qparam, 0, sizeof(qparam));
+ /* TODO: are these ok defaults for all hw_modes? */
+ qparam.aifs = 2;
+ qparam.cw_min =
+ local->conf.phymode == MODE_IEEE80211B ? 31 : 15;
+ qparam.cw_max = 1023;
+ qparam.burst_time = 0;
+ for (i = IEEE80211_TX_QUEUE_DATA0; i < NUM_TX_DATA_QUEUES; i++)
+ {
+ local->hw->conf_tx(dev, i + IEEE80211_TX_QUEUE_DATA0,
+ &qparam);
+ }
+ /* IBSS uses different parameters for Beacon sending */
+ qparam.cw_min++;
+ qparam.cw_min *= 2;
+ qparam.cw_min--;
+ local->hw->conf_tx(dev, IEEE80211_TX_QUEUE_BEACON, &qparam);
+ }
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ ifsta = &sdata->u.sta;
+
+ if (ifsta->ssid_len != len || memcmp(ifsta->ssid, ssid, len) != 0)
+ ifsta->prev_bssid_set = 0;
+ memcpy(ifsta->ssid, ssid, len);
+ memset(ifsta->ssid + len, 0, IEEE80211_MAX_SSID_LEN - len);
+ ifsta->ssid_len = len;
+
+ ifsta->ssid_set = 1;
+ if (local->conf.mode == IW_MODE_ADHOC && !ifsta->bssid_set) {
+ ifsta->ibss_join_req = jiffies;
+ ifsta->state = IEEE80211_IBSS_SEARCH;
+ return ieee80211_sta_find_ibss(dev, ifsta);
+ }
+
+ if (ifsta->bssid_set && ifsta->state != IEEE80211_AUTHENTICATE)
+ ieee80211_sta_new_auth(dev, ifsta);
+
+ return 0;
+}
+
+
+int ieee80211_sta_get_ssid(struct net_device *dev, char *ssid, size_t *len)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+ memcpy(ssid, ifsta->ssid, ifsta->ssid_len);
+ *len = ifsta->ssid_len;
+ return 0;
+}
+
+
+int ieee80211_sta_set_bssid(struct net_device *dev, u8 *bssid)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_if_sta *ifsta;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ ifsta = &sdata->u.sta;
+
+ memcpy(ifsta->bssid, bssid, ETH_ALEN);
+ if (local->conf.mode == IW_MODE_ADHOC)
+ memcpy(local->bssid, bssid, ETH_ALEN);
+
+ if (memcmp(bssid, "\x00\x00\x00\x00\x00\x00", ETH_ALEN) == 0)
+ ifsta->bssid_set = 0;
+ else
+ ifsta->bssid_set = 1;
+ if (ifsta->ssid_set)
+ ieee80211_sta_new_auth(dev, ifsta);
+
+ return 0;
+}
+
+
+static void ieee80211_sta_save_oper_chan(struct net_device *dev)
+{
+ struct ieee80211_local *local = dev->priv;
+ local->scan_oper_channel = local->conf.channel;
+ local->scan_oper_channel_val = local->conf.channel_val;
+ local->scan_oper_power_level = local->conf.power_level;
+ local->scan_oper_freq = local->conf.freq;
+ local->scan_oper_phymode = local->conf.phymode;
+ local->scan_oper_antenna_max = local->conf.antenna_max;
+}
+
+
+static int ieee80211_sta_restore_oper_chan(struct net_device *dev)
+{
+ struct ieee80211_local *local = dev->priv;
+ local->conf.channel = local->scan_oper_channel;
+ local->conf.channel_val = local->scan_oper_channel_val;
+ local->conf.power_level = local->scan_oper_power_level;
+ local->conf.freq = local->scan_oper_freq;
+ local->conf.phymode = local->scan_oper_phymode;
+ local->conf.antenna_max = local->scan_oper_antenna_max;
+ return ieee80211_hw_config(dev);
+}
+
+
+static int ieee80211_active_scan(struct ieee80211_local *local)
+{
+ int m, c;
+
+ for (m = 0; m < local->hw->num_modes; m++) {
+ struct ieee80211_hw_modes *mode = &local->hw->modes[m];
+ if (mode->mode != local->conf.phymode)
+ continue;
+ for (c = 0; c < mode->num_channels; c++) {
+ struct ieee80211_channel *chan = &mode->channels[c];
+ if (chan->flag & IEEE80211_CHAN_W_SCAN &&
+ chan->chan == local->conf.channel) {
+ if (chan->flag & IEEE80211_CHAN_W_ACTIVE_SCAN)
+ return 1;
+ break;
+ }
+ }
+ }
+
+ return 0;
+}
+
+
+static void ieee80211_sta_scan_timer(unsigned long ptr)
+{
+ struct net_device *dev = (struct net_device *) ptr;
+ struct ieee80211_local *local = dev->priv;
+ struct ieee80211_hw_modes *mode;
+ struct ieee80211_channel *chan;
+ int skip;
+ union iwreq_data wrqu;
+
+ if (!local->sta_scanning)
+ return;
+
+ switch (local->scan_state) {
+ case SCAN_SET_CHANNEL:
+ mode = &local->hw->modes[local->scan_hw_mode_idx];
+ if (local->scan_hw_mode_idx >= local->hw->num_modes ||
+ (local->scan_hw_mode_idx + 1 == local->hw->num_modes &&
+ local->scan_channel_idx >= mode->num_channels)) {
+ if (ieee80211_sta_restore_oper_chan(dev)) {
+ printk(KERN_DEBUG "%s: failed to restore "
+ "operational channel after scan\n",
+ dev->name);
+ }
+ printk(KERN_DEBUG "%s: scan completed\n", dev->name);
+ local->sta_scanning = 0;
+ local->last_scan_completed = jiffies;
+ memset(&wrqu, 0, sizeof(wrqu));
+ wireless_send_event(dev, SIOCGIWSCAN, &wrqu, NULL);
+ if (local->conf.mode == IW_MODE_ADHOC) {
+ struct ieee80211_sub_if_data *sdata =
+ IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+ if (!ifsta->bssid_set ||
+ (ifsta->state == IEEE80211_IBSS_JOINED &&
+ !ieee80211_sta_active_ibss(dev)))
+ ieee80211_sta_find_ibss(dev, ifsta);
+ }
+ return;
+ }
+ skip = !(local->hw_modes & (1 << mode->mode));
+ chan = &mode->channels[local->scan_channel_idx];
+ if (!(chan->flag & IEEE80211_CHAN_W_SCAN) ||
+ (local->conf.mode == IW_MODE_ADHOC &&
+ !(chan->flag & IEEE80211_CHAN_W_IBSS)) ||
+ (local->hw_modes & (1 << MODE_IEEE80211G) &&
+ mode->mode == MODE_IEEE80211B && local->scan_skip_11b))
+ skip = 1;
+
+ if (!skip) {
+#if 0
+ printk(KERN_DEBUG "%s: scan channel %d (%d MHz)\n",
+ dev->name, chan->chan, chan->freq);
+#endif
+
+ local->conf.channel = chan->chan;
+ local->conf.channel_val = chan->val;
+ local->conf.power_level = chan->power_level;
+ local->conf.freq = chan->freq;
+ local->conf.phymode = mode->mode;
+ local->conf.antenna_max = chan->antenna_max;
+ if (ieee80211_hw_config(dev)) {
+ printk(KERN_DEBUG "%s: failed to set channel "
+ "%d (%d MHz) for scan\n", dev->name,
+ chan->chan, chan->freq);
+ skip = 1;
+ }
+ }
+
+ local->scan_channel_idx++;
+ if (local->scan_channel_idx >=
+ local->hw->modes[local->scan_hw_mode_idx].num_channels) {
+ local->scan_hw_mode_idx++;
+ local->scan_channel_idx = 0;
+ }
+
+ if (skip) {
+ local->scan_timer.expires = jiffies;
+ break;
+ }
+
+ local->scan_timer.expires = jiffies + IEEE80211_PROBE_DELAY;
+ local->scan_state = SCAN_SEND_PROBE;
+ break;
+ case SCAN_SEND_PROBE:
+ if (ieee80211_active_scan(local)) {
+ ieee80211_send_probe_req(dev, NULL, local->scan_ssid,
+ local->scan_ssid_len);
+ local->scan_timer.expires =
+ jiffies + IEEE80211_CHANNEL_TIME;
+ } else {
+ local->scan_timer.expires =
+ jiffies + IEEE80211_PASSIVE_CHANNEL_TIME;
+ }
+ local->scan_state = SCAN_SET_CHANNEL;
+ break;
+ }
+
+ add_timer(&local->scan_timer);
+}
+
+
+int ieee80211_sta_req_scan(struct net_device *dev, u8 *ssid, size_t ssid_len)
+{
+ struct ieee80211_local *local = dev->priv;
+
+ if (ssid_len > IEEE80211_MAX_SSID_LEN)
+ return -EINVAL;
+
+ /* MLME-SCAN.request (page 118) page 144 (11.1.3.1)
+ * BSSType: INFRASTRUCTURE, INDEPENDENT, ANY_BSS
+ * BSSID: MACAddress
+ * SSID
+ * ScanType: ACTIVE, PASSIVE
+ * ProbeDelay: delay (in microseconds) to be used prior to transmitting
+ * a Probe frame during active scanning
+ * ChannelList
+ * MinChannelTime (>= ProbeDelay), in TU
+ * MaxChannelTime: (>= MinChannelTime), in TU
+ */
+
+ /* MLME-SCAN.confirm
+ * BSSDescriptionSet
+ * ResultCode: SUCCESS, INVALID_PARAMETERS
+ */
+
+ /* TODO: if assoc, move to power save mode for the duration of the
+ * scan */
+
+ if (local->sta_scanning)
+ return -EBUSY;
+
+ printk(KERN_DEBUG "%s: starting scan\n", dev->name);
+
+ ieee80211_sta_save_oper_chan(dev);
+
+ local->sta_scanning = 1;
+ /* TODO: stop TX queue? */
+
+ if (ssid) {
+ local->scan_ssid_len = ssid_len;
+ memcpy(local->scan_ssid, ssid, ssid_len);
+ } else
+ local->scan_ssid_len = 0;
+ local->scan_skip_11b = 1; /* FIX: clear this is 11g is not supported */
+ local->scan_state = SCAN_SET_CHANNEL;
+ local->scan_hw_mode_idx = 0;
+ local->scan_channel_idx = 0;
+ init_timer(&local->scan_timer);
+ local->scan_timer.data = (unsigned long) dev;
+ local->scan_timer.function = ieee80211_sta_scan_timer;
+ local->scan_timer.expires = jiffies + 1;
+ add_timer(&local->scan_timer);
+
+ return 0;
+}
+
+
+static char *
+ieee80211_sta_scan_result(struct net_device *dev,
+ struct ieee80211_sta_bss *bss,
+ char *current_ev, char *end_buf)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct iw_event iwe;
+
+ if (time_after(jiffies,
+ bss->last_update + IEEE80211_SCAN_RESULT_EXPIRE))
+ return current_ev;
+
+ if (!(local->hw_modes & (1 << bss->hw_mode)))
+ return current_ev;
+
+ if (local->scan_flags & IEEE80211_SCAN_WPA_ONLY &&
+ bss->wpa_ie == NULL && bss->rsn_ie == NULL)
+ return current_ev;
+
+ if (local->scan_flags & IEEE80211_SCAN_MATCH_SSID &&
+ (local->scan_ssid_len != bss->ssid_len ||
+ memcmp(local->scan_ssid, bss->ssid, bss->ssid_len) != 0))
+ return current_ev;
+
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = SIOCGIWAP;
+ iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
+ memcpy(iwe.u.ap_addr.sa_data, bss->bssid, ETH_ALEN);
+ current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
+ IW_EV_ADDR_LEN);
+
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = SIOCGIWESSID;
+ iwe.u.data.length = bss->ssid_len;
+ iwe.u.data.flags = 1;
+ current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
+ bss->ssid);
+
+ if (bss->capability & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)) {
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = SIOCGIWMODE;
+ if (bss->capability & WLAN_CAPABILITY_ESS)
+ iwe.u.mode = IW_MODE_MASTER;
+ else
+ iwe.u.mode = IW_MODE_ADHOC;
+ current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
+ IW_EV_UINT_LEN);
+ }
+
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = SIOCGIWFREQ;
+ iwe.u.freq.m = bss->freq * 100000;
+ iwe.u.freq.e = 1;
+ current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
+ IW_EV_FREQ_LEN);
+
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = SIOCGIWENCODE;
+ if (bss->capability & WLAN_CAPABILITY_PRIVACY)
+ iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
+ else
+ iwe.u.data.flags = IW_ENCODE_DISABLED;
+ iwe.u.data.length = 0;
+ current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, "");
+
+ if (bss && bss->wpa_ie) {
+ char *buf, *p;
+ int i;
+ buf = kmalloc(30 + bss->wpa_ie_len * 2, GFP_ATOMIC);
+ if (buf) {
+ p = buf;
+ p += sprintf(p, "wpa_ie=");
+ for (i = 0; i < bss->wpa_ie_len; i++)
+ p+= sprintf(p, "%02x", bss->wpa_ie[i]);
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = IWEVCUSTOM;
+ iwe.u.data.length = strlen(buf);
+ current_ev = iwe_stream_add_point(current_ev, end_buf,
+ &iwe, buf);
+ kfree(buf);
+ }
+ }
+
+ if (bss && bss->rsn_ie) {
+ char *buf, *p;
+ int i;
+ buf = kmalloc(30 + bss->rsn_ie_len * 2, GFP_ATOMIC);
+ if (buf) {
+ p = buf;
+ p += sprintf(p, "rsn_ie=");
+ for (i = 0; i < bss->rsn_ie_len; i++)
+ p+= sprintf(p, "%02x", bss->rsn_ie[i]);
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = IWEVCUSTOM;
+ iwe.u.data.length = strlen(buf);
+ current_ev = iwe_stream_add_point(current_ev, end_buf,
+ &iwe, buf);
+ kfree(buf);
+ }
+ }
+
+ if (bss) {
+ char *buf;
+ buf = kmalloc(30, GFP_ATOMIC);
+ if (buf) {
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = IWEVCUSTOM;
+ sprintf(buf, "tsf=%016llx", bss->timestamp);
+ iwe.u.data.length = strlen(buf);
+ current_ev = iwe_stream_add_point(current_ev, end_buf,
+ &iwe, buf);
+ kfree(buf);
+ }
+ }
+
+ do {
+ char *buf, *p;
+ int i;
+
+ if (!(local->scan_flags & IEEE80211_SCAN_EXTRA_INFO))
+ break;
+
+ buf = kmalloc(100, GFP_ATOMIC);
+ if (buf == NULL)
+ break;
+
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = IWEVCUSTOM;
+ sprintf(buf, "bcn_int=%d", bss->beacon_int);
+ iwe.u.data.length = strlen(buf);
+ current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
+ buf);
+
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = IWEVCUSTOM;
+ sprintf(buf, "rssi=%d", bss->rssi);
+ iwe.u.data.length = strlen(buf);
+ current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
+ buf);
+
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = IWEVCUSTOM;
+ sprintf(buf, "capab=0x%04x", bss->capability);
+ iwe.u.data.length = strlen(buf);
+ current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
+ buf);
+
+ p = buf;
+ p += sprintf(p, "supp_rates=");
+ for (i = 0; i < bss->supp_rates_len; i++)
+ p+= sprintf(p, "%02x", bss->supp_rates[i]);
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = IWEVCUSTOM;
+ iwe.u.data.length = strlen(buf);
+ current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
+ buf);
+
+ kfree(buf);
+ break;
+ } while (0);
+
+ return current_ev;
+}
+
+
+int ieee80211_sta_scan_results(struct net_device *dev, char *buf, size_t len)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct list_head *ptr;
+ char *current_ev = buf;
+ char *end_buf = buf + len;
+ struct ieee80211_sta_bss *bss;
+
+ spin_lock_bh(&local->sta_bss_lock);
+ list_for_each(ptr, &local->sta_bss_list) {
+ bss = list_entry(ptr, struct ieee80211_sta_bss, list);
+ current_ev = ieee80211_sta_scan_result(dev, bss, current_ev,
+ end_buf);
+ }
+ spin_unlock_bh(&local->sta_bss_lock);
+ return current_ev - buf;
+}
+
+
+int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+ kfree(ifsta->extra_ie);
+ if (len == 0) {
+ ifsta->extra_ie = NULL;
+ ifsta->extra_ie_len = 0;
+ return 0;
+ }
+ ifsta->extra_ie = kmalloc(len, GFP_KERNEL);
+ if (ifsta->extra_ie == NULL) {
+ ifsta->extra_ie_len = 0;
+ return -ENOMEM;
+ }
+ memcpy(ifsta->extra_ie, ie, len);
+ ifsta->extra_ie_len = len;
+ if (ifsta->bssid_set && ifsta->ssid_set &&
+ ifsta->state != IEEE80211_AUTHENTICATE)
+ ieee80211_sta_new_auth(dev, ifsta);
+ return 0;
+}
+
+
+struct sta_info * ieee80211_ibss_add_sta(struct net_device *dev,
+ struct sk_buff *skb, u8 *bssid,
+ u8 *addr)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct list_head *ptr;
+ struct sta_info *sta;
+ struct ieee80211_sub_if_data *sdata = NULL;
+ struct net_device *sta_dev = NULL;
+
+ /* TODO: Could consider removing the least recently used entry and
+ * allow new one to be added. */
+ if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) {
+ if (net_ratelimit()) {
+ printk(KERN_DEBUG "%s: No room for a new IBSS STA "
+ "entry " MACSTR "\n", dev->name, MAC2STR(addr));
+ }
+ return NULL;
+ }
+
+ spin_lock_bh(&local->sub_if_lock);
+ list_for_each(ptr, &local->sub_if_list) {
+ sdata = list_entry(ptr, struct ieee80211_sub_if_data, list);
+ if (sdata->type == IEEE80211_SUB_IF_TYPE_STA &&
+ memcmp(bssid, sdata->u.sta.bssid, ETH_ALEN) == 0) {
+ sta_dev = sdata->dev;
+ break;
+ }
+ }
+ spin_unlock_bh(&local->sub_if_lock);
+
+ if (sta_dev == NULL)
+ return NULL;
+
+ printk(KERN_DEBUG "%s: Adding new IBSS station " MACSTR " (dev=%s)\n",
+ dev->name, MAC2STR(addr), sta_dev->name);
+
+ sta = sta_info_add(local, dev, addr);
+ if (sta == NULL) {
+ return NULL;
+ }
+
+ sta->dev = sta_dev;
+ sta->supp_rates = sdata->u.sta.supp_rates_bits;
+
+ rate_control_rate_init(local, sta);
+
+ return sta; /* caller will call sta_info_release() */
+}
+
+
+int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+
+ printk(KERN_DEBUG "%s: deauthenticate(reason=%d)\n",
+ dev->name, reason);
+
+ if (sdata->type != IEEE80211_SUB_IF_TYPE_STA)
+ return -EINVAL;
+
+ ieee80211_send_deauth(dev, ifsta, reason);
+ ieee80211_set_associated(dev, ifsta, 0);
+ return 0;
+}
+
+
+int ieee80211_sta_disassociate(struct net_device *dev, u16 reason)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+
+ printk(KERN_DEBUG "%s: disassociate(reason=%d)\n",
+ dev->name, reason);
+
+ if (sdata->type != IEEE80211_SUB_IF_TYPE_STA)
+ return -EINVAL;
+
+ if (!ifsta->associated)
+ return -1;
+
+ ieee80211_send_disassoc(dev, ifsta, reason);
+ ieee80211_set_associated(dev, ifsta, 0);
+ return 0;
+}
--- /dev/null
+/*
+ * Low-level hardware driver -- IEEE 802.11 driver (80211.o) interface
+ * Copyright 2002-2005, Devicescape Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef IEEE80211_H
+#define IEEE80211_H
+
+#include "ieee80211_shared.h"
+
+/* Note! Only ieee80211_tx_status_irqsafe() and ieee80211_rx_irqsave() can be
+ * called in hardware interrupt context. The low-level driver must not call any
+ * other functions in hardware interrupt context. If there is a need for such
+ * call, the low-level driver should first ACK the interrupt and perform the
+ * IEEE 802.11 code call after this, e.g., from a scheduled tasklet (in
+ * software interrupt context).
+ */
+
+/*
+ * Frame format used when passing frame between low-level hardware drivers
+ * and IEEE 802.11 driver the same as used in the wireless media, i.e.,
+ * buffers start with IEEE 802.11 header and include the same octets that
+ * are sent over air.
+ *
+ * If hardware uses IEEE 802.3 headers (and perform 802.3 <-> 802.11
+ * conversion in firmware), upper layer 802.11 code needs to be changed to
+ * support this.
+ *
+ * If the receive frame format is not the same as the real frame sent
+ * on the wireless media (e.g., due to padding etc.), upper layer 802.11 code
+ * could be updated to provide support for such format assuming this would
+ * optimize the performance, e.g., by removing need to re-allocation and
+ * copying of the data.
+ */
+
+/* Interface version (used for compatibility verification) */
+#define IEEE80211_VERSION 2
+
+
+/* Channel information structure. Low-level driver is expected to fill in chan,
+ * freq, and val fields. Other fields will be filled in by 80211.o based on
+ * hostapd information and low-level driver does not need to use them. The
+ * limits for each channel will be provided in 'struct ieee80211_conf' when
+ * configuring the low-level driver with hw->config callback. */
+struct ieee80211_channel {
+ short chan; /* channel number (IEEE 802.11) */
+ short freq; /* frequency in MHz */
+ int val; /* hw specific value for the channel */
+ int flag; /* flag for hostapd use (IEEE80211_CHAN_*) */
+ unsigned char power_level;
+ unsigned char antenna_max;
+};
+
+struct ieee80211_rate {
+ int rate; /* rate in 100 kbps */
+ int val; /* hw specific value for the rate */
+ int flags; /* IEEE80211_RATE_ flags */
+ int val2; /* hw specific value for the rate when using short preamble
+ * (only when IEEE80211_RATE_PREAMBLE2 flag is set, i.e., for
+ * 2, 5.5, and 11 Mbps) */
+ signed char min_rssi_ack;
+ unsigned char min_rssi_ack_delta;
+
+ /* following fields are set by 80211.o and need not be filled by the
+ * low-level driver */
+ int rate_inv; /* inverse of the rate (LCM(all rates) / rate) for
+ * optimizing channel utilization estimates */
+};
+
+struct ieee80211_hw_modes {
+ int mode;
+ int num_channels;
+ struct ieee80211_channel *channels;
+ int num_rates;
+ struct ieee80211_rate *rates;
+ int xr_end; /* only used with Atheros XR */
+};
+
+struct ieee80211_tx_queue_params {
+ int aifs; /* 0 .. 255; -1 = use default */
+ int cw_min; /* 2^n-1: 1, 3, 7, .. , 1023; 0 = use default */
+ int cw_max; /* 2^n-1: 1, 3, 7, .. , 1023; 0 = use default */
+ int burst_time; /* maximum burst time in 0.1 ms (i.e., 10 = 1 ms);
+ * 0 = disabled */
+};
+
+#define NUM_TX_DATA_QUEUES 6
+
+struct ieee80211_tx_queue_stats_data {
+ unsigned int len; /* num packets in queue */
+ unsigned int limit; /* queue len (soft) limit */
+ unsigned int count; /* total num frames sent */
+};
+
+struct ieee80211_tx_queue_stats {
+ struct ieee80211_tx_queue_stats_data data[NUM_TX_DATA_QUEUES];
+};
+
+#ifndef IEEE80211_TX_QUEUE_NUMS
+#define IEEE80211_TX_QUEUE_NUMS
+/* TODO: these need to be synchronized with hostapd_ioctl.h; make a shared
+ * header file that can be included into low-level drivers, 80211.o, and
+ * hostapd */
+enum {
+ IEEE80211_TX_QUEUE_DATA0 = 0,
+ IEEE80211_TX_QUEUE_DATA1 = 1,
+ IEEE80211_TX_QUEUE_DATA2 = 2,
+ IEEE80211_TX_QUEUE_DATA3 = 3,
+ IEEE80211_TX_QUEUE_DATA4 = 4,
+ IEEE80211_TX_QUEUE_SVP = 5,
+ IEEE80211_TX_QUEUE_AFTER_BEACON = 6,
+ IEEE80211_TX_QUEUE_BEACON = 7
+};
+#endif /* IEEE80211_TX_QUEUE_NUMS */
+
+
+struct ieee80211_low_level_stats {
+ unsigned int dot11ACKFailureCount;
+ unsigned int dot11RTSFailureCount;
+ unsigned int dot11FCSErrorCount;
+ unsigned int dot11RTSSuccessCount;
+};
+
+/* Transmit control fields. This data structure is passed to low-level driver
+ * with each TX frame. The low-level driver is responsible of configuring
+ * hardware to use given values (depending on what is supported). */
+#define HW_KEY_IDX_INVALID -1
+
+struct ieee80211_tx_control {
+ enum { PKT_NORMAL = 0, PKT_PROBE_RESP } pkt_type;
+ int tx_rate; /* Transmit rate, given as the hw specific value for the
+ * rate (from struct ieee80211_rate) */
+ int rts_cts_rate; /* Transmit rate for RTS/CTS frame, given as the hw
+ * specific value for the rate (from
+ * struct ieee80211_rate) */
+ /* 1 = only first attempt, 2 = one retry, .. */
+ unsigned int retry_limit:8;
+ /* duration field for RTS/CTS frame */
+ unsigned int rts_cts_duration:16;
+ /* TODO: change these bit flags to use one unsigned int variable and
+ * defines with BIT(n). These are copied to TX status structure and
+ * this will make the code faster and smaller. */
+ unsigned int req_tx_status:1; /* request TX status callback for this
+ * frame */
+ unsigned int do_not_encrypt:1; /* send this frame without encryption;
+ * e.g., for EAPOL frames */
+ unsigned int use_rts_cts:1; /* Use RTS-CTS before sending frame. */
+ unsigned int use_cts_protect:1; /* Use CTS protection for the frame
+ * (e.g., for combined 802.11g /
+ * 802.11b networks) */
+ unsigned int no_ack:1; /* Tell the low level not to wait for an ack */
+ unsigned int rate_ctrl_probe:1;
+ unsigned int clear_dst_mask:1;
+ unsigned int requeue:1;
+ /* following three flags are only used with Atheros Super A/G */
+ unsigned int compress:1;
+ unsigned int turbo_prime_notify:1; /* notify HostaAPd after frame
+ * transmission */
+ unsigned int fast_frame:1;
+
+ unsigned int atheros_xr:1; /* only used with Atheros XR */
+
+ unsigned int power_level:8; /* per-packet transmit power level, in dBm
+ */
+ unsigned int antenna_sel:4; /* 0 = default/diversity,
+ * 1 = Ant0, 2 = Ant1 */
+ int key_idx:8; /* -1 = do not encrypt, >= 0 keyidx from hw->set_key()
+ */
+ int icv_len:8; /* Length of the ICV/MIC field in octets */
+ int iv_len:8; /* Length of the IV field in octets */
+ unsigned int queue:4; /* hardware queue to use for this frame;
+ * 0 = highest, hw->queues-1 = lowest */
+ unsigned int sw_retry_attempt:4; /* no. of times hw has tried to
+ * transmit frame (not incl. hw retries) */
+
+#if 0
+ int rateidx; /* internal 80211.o rateidx, to be copied to tx_status */
+ int alt_retry_rate; /* retry rate for the last retries, given as the
+ * hw specific value for the rate (from
+ * struct ieee80211_rate). To be used to limit
+ * packet dropping when probing higher rates, if hw
+ * supports multiple retry rates. -1 = not used */
+#endif
+};
+
+#define IEEE80211_CB_MAGIC 0xAAB80211
+
+struct ieee80211_tx_packet_data {
+ unsigned int magic;
+ struct ieee80211_tx_control control;
+ unsigned long jiffies;
+ struct ieee80211_sub_if_data *sdata;
+};
+
+#define RX_FLAG_MMIC_ERROR 0x1
+#define RX_FLAG_DECRYPTED 0x2
+#define RX_FLAG_XR_DOUBLE_CHIRP 0x4
+
+/* Receive status. The low-level driver should provide this information
+ * (the subset supported by hardware) to the 802.11 code with each received
+ * frame.
+ * Current implementation copies this into skb->cb, so it must be less than
+ * 48 bytes. */
+struct ieee80211_rx_status {
+#if 0
+ u64 hosttime;
+ u64 mactime;
+#endif
+ int freq; /* receive frequency in Mhz */
+ int channel;
+ int phymode;
+ int ssi;
+ int antenna;
+ int rate;
+ int flag;
+};
+
+/* Transmit status. The low-level driver should provide this information
+ * (the subset supported by hardware) to the 802.11 code for each transmit
+ * frame. */
+struct ieee80211_tx_status {
+ /* flags copied from struct ieee80211_tx_control) */
+ unsigned int req_tx_status:1; /* whether TX status was explicitly
+ * requested */
+ unsigned int rate_ctrl_probe:1; /* whether this was a probe packet from
+ * rate control */
+ unsigned int tx_filtered:1;
+
+ /* following three fields are only used with Atheros Super A/G */
+ unsigned int turbo_prime_notify:1; /* notify HostAPd - CTS for Turbo
+ * Prime is sent */
+ int queue_length; /* information about TX queue */
+ int queue_number;
+
+ int ack; /* whether the TX frame was ACKed */
+ int ack_signal; /* measured signal strength of the ACK frame */
+ int excessive_retries;
+ int retry_count;
+ int rateidx; /* internal 80211.o rateidx, to be copied to tx_status */
+};
+
+
+struct ieee80211_conf {
+ int channel; /* IEEE 802.11 channel number */
+ int freq; /* MHz */
+ int channel_val; /* hw specific value for the channel */
+
+ int mode; /* IW_MODE_ */
+
+ int phymode; /* MODE_IEEE80211A, .. */
+ unsigned int regulatory_domain;
+ int adm_status;
+
+ int beacon_int;
+
+ /* Bitfields, grouped together */
+
+ int sw_encrypt:1;
+ int sw_decrypt:1;
+ int short_slot_time:1; /* use IEEE 802.11g Short Slot Time */
+ int ssid_hidden:1; /* do not broadcast the ssid */
+
+ /* these fields are used by low level drivers for hardware
+ * that generate beacons independently */
+ u8 *ssid;
+ size_t ssid_len;
+ u8 *generic_elem;
+ size_t generic_elem_len;
+
+ u8 power_level; /* transmit power limit for current
+ * regulatory domain; in dBm */
+ u8 antenna_max; /* maximum antenna gain */
+ short tx_power_reduction; /* in 0.1 dBm */
+
+ int antenna_sel; /* default antenna conf:
+ * 0 = default/diversity,
+ * 1 = Ant0,
+ * 2 = Ant1 */
+
+ int calib_int; /* hw/radio calibration interval in
+ * seconds */
+ int antenna_def;
+ int antenna_mode;
+
+ u8 bssid_mask[ETH_ALEN]; /* ff:ff:ff:ff:ff:ff = 1 BSSID */
+ int bss_count;
+
+ int atheros_super_ag_compression;
+ int atheros_super_ag_fast_frame;
+ int atheros_super_ag_burst;
+ int atheros_super_ag_wme_ele;
+ int atheros_super_ag_turbo_g;
+ int atheros_super_ag_turbo_prime;
+
+ int atheros_xr;
+
+ u8 client_bssid[ETH_ALEN];
+
+ /* Following five fields are used for IEEE 802.11H */
+ unsigned int radar_detect;
+ unsigned int spect_mgmt;
+ unsigned int quiet_duration; /* duration of quiet period */
+ unsigned int quiet_offset; /* how far into the beacon is the quiet
+ * period */
+ unsigned int quiet_period;
+};
+
+
+typedef enum { ALG_NONE, ALG_WEP, ALG_TKIP, ALG_CCMP, ALG_NULL }
+ieee80211_key_alg;
+
+
+struct ieee80211_key_conf {
+
+ int hw_key_idx; /* filled + used by low-level driver */
+ ieee80211_key_alg alg;
+ int keylen;
+
+ int force_sw_encrypt:1; /* to be cleared by low-level driver */
+ int keyidx:8; /* WEP key index */
+ int default_tx_key:1; /* This key is the new default TX key
+ * (used only for broadcast keys). */
+ int default_wep_only:1; /* static WEP is the only configured security
+ * policy; this allows some low-level drivers
+ * to determine when hwaccel can be used */
+ u8 key[0];
+};
+
+#define IEEE80211_SCAN_START 1
+#define IEEE80211_SCAN_END 2
+
+struct ieee80211_scan_conf {
+ int scan_channel; /* IEEE 802.11 channel number to do passive scan
+ * on */
+ int scan_freq; /* new freq in MHz to switch to for passive scan
+ */
+ int scan_channel_val; /* hw specific value for the channel */
+ int scan_phymode; /* MODE_IEEE80211A, .. */
+ unsigned char scan_power_level;
+ unsigned char scan_antenna_max;
+
+
+ int running_channel; /* IEEE 802.11 channel number we operate on
+ * normally */
+ int running_freq; /* freq in MHz we're operating on normally */
+ int running_channel_val; /* hw specific value for the channel */
+ int running_phymode;
+ unsigned char running_power_level;
+ unsigned char running_antenna_max;
+
+ int scan_time; /* time a scan will take in us */
+ int tries;
+
+ struct sk_buff *skb; /* skb to transmit before changing channels, maybe
+ * NULL for none */
+ struct ieee80211_tx_control *tx_control;
+
+};
+
+#ifndef IW_MODE_ADHOC
+#define IW_MODE_ADHOC 1
+#endif
+
+#ifndef IW_MODE_INFRA
+#define IW_MODE_INFRA 2
+#endif
+
+#ifndef IW_MODE_MASTER
+#define IW_MODE_MASTER 3
+#endif
+
+#ifndef IW_MODE_MONITOR
+#define IW_MODE_MONITOR 6
+#endif
+
+#define IEEE80211_SEQ_COUNTER_RX 0
+#define IEEE80211_SEQ_COUNTER_TX 1
+
+typedef enum {
+ SET_KEY, DISABLE_KEY, REMOVE_ALL_KEYS,
+ ENABLE_COMPRESSION, DISABLE_COMPRESSION
+} set_key_cmd;
+
+/* Configuration block used by the low-level driver to tell 802.11 code about
+ * supported hardware features and to pass function pointers for callback
+ * functions. */
+struct ieee80211_hw {
+ int version; /* IEEE80211_VERSION */
+
+ /* Driver name */
+ char *name;
+
+ /* TODO: frame_type 802.11/802.3, sw_encryption requirements */
+
+ /* Some wireless LAN chipsets generate beacons in the hardware/firmware
+ * and others rely on host generated beacons. This option is used to
+ * configure upper layer IEEE 802.11 module to generate beacons. The
+ * low-level driver can use ieee80211_beacon_get() to fetch next
+ * beacon frame. */
+ int host_gen_beacon:1;
+
+
+ /* Some devices handle decryption internally and do not
+ * indicate whether the frame was encrypted (unencrypted frames
+ * will be dropped by the hardware, unless specifically allowed
+ * through) */
+ int device_hides_wep:1;
+
+ /* Whether RX frames passed to ieee80211_rx() include FCS in the end
+ */
+ int rx_includes_fcs:1;
+
+ /* Some wireless LAN chipsets buffer broadcast/multicast frames for
+ * power saving stations in the hardware/firmware and others rely on
+ * the host system for such buffering. This option is used to
+ * configure upper layer IEEE 802.11 to buffer broadcast/multicast
+ * frames when there are power saving stations so that low-level driver
+ * can fetch them with ieee80211_get_buffered_bc(). */
+ int host_broadcast_ps_buffering:1;
+
+ int wep_include_iv:1;
+ int data_nullfunc_ack:1; /* will data nullfunc frames get proper
+ * TX status callback */
+
+ /* Force sw version of encryption for TKIP packets if WMM is enabled.
+ */
+ int no_tkip_wmm_hwaccel:1;
+
+ /* 1 if the payload needs to be padded at even boundaries after the
+ * header */
+ unsigned int extra_hdr_room:1;
+
+ /* Some devices handle Michael MIC internally and do not include MIC in
+ * the received packets given to 80211.o. device_strips_mic must be set
+ * for such devices. ISWEP bit is still expected to be set in the IEEE
+ * 802.11 header with this option unlike with device_hides_wep option.
+ */
+ unsigned int device_strips_mic:1;
+
+ /* 1 = low-level driver supports skb fraglist (NETIF_F_FRAGLIST), i.e.,
+ * more than one skb per frame */
+ unsigned int fraglist;
+
+ /* This is the time in us to change channels
+ */
+ int channel_change_time;
+
+ int num_modes;
+ struct ieee80211_hw_modes *modes;
+
+ /* Handler that 802.11 module calls for each transmitted frame.
+ * skb contains the buffer starting from the IEEE 802.11 header.
+ * The low-level driver should send the frame out based on
+ * configuration in the TX control data. */
+ int (*tx)(struct net_device *dev, struct sk_buff *skb,
+ struct ieee80211_tx_control *control);
+
+ /* Handler for performing hardware reset. */
+ int (*reset)(struct net_device *dev);
+
+ /* Handler that is called when any netdevice attached to the hardware
+ * device is set UP for the first time. This can be used, e.g., to
+ * enable interrupts and beacon sending. */
+ int (*open)(struct net_device *dev);
+
+ /* Handler that is called when the last netdevice attached to the
+ * hardware device is set DOWN. This can be used, e.g., to disable
+ * interrupts and beacon sending. */
+ int (*stop)(struct net_device *dev);
+
+ /* Handler for configuration requests. IEEE 802.11 code calls this
+ * function to change hardware configuration, e.g., channel. */
+ int (*config)(struct net_device *dev, struct ieee80211_conf *conf);
+
+ /* Set TIM bit handler. If the hardware/firmware takes care of beacon
+ * generation, IEEE 802.11 code uses this function to tell the
+ * low-level to set (or clear if set==0) TIM bit for the given aid. If
+ * host system is used to generate beacons, this handler is not used
+ * and low-level driver should set it to NULL. */
+ int (*set_tim)(struct net_device *dev, int aid, int set);
+
+ /* Set encryption key. IEEE 802.11 module calls this function to set
+ * encryption keys. addr is ff:ff:ff:ff:ff:ff for default keys and
+ * station hwaddr for individual keys. aid of the station is given
+ * to help low-level driver in selecting which key->hw_key_idx to use
+ * for this key. TX control data will use the hw_key_idx selected by
+ * the low-level driver. */
+ int (*set_key)(struct net_device *dev, set_key_cmd cmd, u8 *addr,
+ struct ieee80211_key_conf *key, int aid);
+
+ /* Set TX key index for default/broadcast keys. This is needed in cases
+ * where wlan card is doing full WEP/TKIP encapsulation (wep_include_iv
+ * is not set), in other cases, this function pointer can be set to
+ * NULL since 80211.o takes care of selecting the key index for each
+ * TX frame. */
+ int (*set_key_idx)(struct net_device *dev, int idx);
+
+ /* Enable/disable IEEE 802.1X. This item requests wlan card to pass
+ * unencrypted EAPOL-Key frames even when encryption is configured.
+ * If the wlan card does not require such a configuration, this
+ * function pointer can be set to NULL. 80211.o */
+ int (*set_ieee8021x)(struct net_device *dev, int use_ieee8021x);
+
+ /* Set port authorization state (IEEE 802.1X PAE) to be authorized
+ * (authorized=1) or unauthorized (authorized=0). This function can be
+ * used if the wlan hardware or low-level driver implements PAE.
+ * 80211.o module will anyway filter frames based on authorization
+ * state, so this function pointer can be NULL if low-level driver does
+ * not require event notification about port state changes. */
+ int (*set_port_auth)(struct net_device *dev, u8 *addr, int authorized);
+
+ /* Ask the hardware to do a passive scan on a new channel. The hardware
+ * will do what ever is required to nicely leave the current channel
+ * including transmit any CTS packets, etc. */
+ int (*passive_scan)(struct net_device *dev, int state,
+ struct ieee80211_scan_conf *conf);
+
+ /* return low-level statistics */
+ int (*get_stats)(struct net_device *dev,
+ struct ieee80211_low_level_stats *stats);
+
+ /* Enable/disable test modes; mode = IEEE80211_TEST_* */
+ int (*test_mode)(struct net_device *dev, int mode);
+
+ /* Configuration of test parameters */
+ int (*test_param)(struct net_device *dev, int param, int value);
+
+ /* Change MAC address. addr is pointer to struct sockaddr. */
+ int (*set_mac_address)(struct net_device *dev, void *addr);
+
+ /* For devices that generate their own beacons and probe response
+ * or association responses this updates the state of privacy_invoked
+ * returns 0 for success or an error number */
+
+ int (*set_privacy_invoked)(struct net_device *dev,
+ int privacy_invoked);
+
+ /* For devices that have internal sequence counters, allow 802.11
+ * code to access the current value of a counter */
+ int (*get_sequence_counter)(struct net_device *dev,
+ u8* addr, u8 keyidx, u8 txrx,
+ u32* iv32, u16* iv16);
+
+ /* Configuration of RTS threshold (if device needs it) */
+ int (*set_rts_threshold)(struct net_device *dev, u32 value);
+
+ /* Configuration of fragmentation threshold (if device needs it) */
+ int (*set_frag_threshold)(struct net_device *dev, u32 value);
+
+ /* Configuration of retry limits (if device needs it) */
+ int (*set_retry_limit)(struct net_device *dev, u32 short_retry,
+ u32 long_retr);
+
+ /* Number of STAs in STA table notification (NULL = disabled) */
+ void (*sta_table_notification)(struct net_device *dev, int num_sta);
+
+ /* Configure TX queue parameters (EDCF (aifs, cw_min, cw_max),
+ * bursting) for a hardware TX queue.
+ * queue = IEEE80211_TX_QUEUE_*. */
+ int (*conf_tx)(struct net_device *dev, int queue,
+ const struct ieee80211_tx_queue_params *params);
+
+ /* Get statistics of the current TX queue status. This is used to get
+ * number of currently queued packets (queue length), maximum queue
+ * size (limit), and total number of packets sent using each TX queue
+ * (count). This information is used for WMM to find out which TX
+ * queues have room for more packets and by hostapd to provide
+ * statistics about the current queueing state to external programs. */
+ int (*get_tx_stats)(struct net_device *dev,
+ struct ieee80211_tx_queue_stats *stats);
+
+ /* Number of available hardware TX queues for data packets.
+ * WMM requires at least four queues. */
+ int queues;
+
+ /* Get the current TSF timer value from firmware/hardware. Currently,
+ * this is only used for IBSS mode debugging and, as such, is not a
+ * required function. */
+ u64 (*get_tsf)(struct net_device *dev);
+
+ /* Reset the TSF timer and allow firmware/hardware to synchronize with
+ * other STAs in the IBSS. This is only used in IBSS mode. This
+ * function is optional if the firmware/hardware takes full care of
+ * TSF synchronization. */
+ void (*reset_tsf)(struct net_device *dev);
+
+ /* Setup beacon data for IBSS beacons. Unlike access point (Master),
+ * IBSS uses a fixed beacon frame which is configured using this
+ * function. This handler is required only for IBSS mode. */
+ int (*beacon_update)(struct net_device *dev, struct sk_buff *skb,
+ struct ieee80211_tx_control *control);
+
+ /* Determine whether the last IBSS beacon was sent by us. This is
+ * needed only for IBSS mode and the result of this function is used to
+ * determine whether to reply to Probe Requests. */
+ int (*tx_last_beacon)(struct net_device *dev);
+
+ /* Optional handler for XR-in-use notification. */
+ int (*atheros_xr_in_use)(struct net_device *dev, int in_use);
+};
+
+/* Allocate a new hardware device. This must be called once for each
+ * hardware device. The returned pointer must be used to refer to this
+ * device when calling other functions. 802.11 code allocates a private data
+ * area for the low-level driver. The size of this area is given as
+ * priv_data_len. ieee80211_dev_hw_data() is used to get a pointer to the
+ * private data area.
+ *
+ * Note: in this version of the interface the returned pointer is struct
+ * net_device *. This may change in the future and low-level driver should
+ * not refer the device data directly to remain compatible with the future
+ * versions of the interface. */
+struct net_device *ieee80211_alloc_hw(size_t priv_data_len,
+ void (*setup)(struct net_device *));
+
+/* Register hardware device to the IEEE 802.11 code and kernel. Low-level
+ * drivers must call this function before using any other IEEE 802.11
+ * function. */
+int ieee80211_register_hw(struct net_device *dev, struct ieee80211_hw *hw);
+
+/* This function is allowed to update hardware configuration (e.g., list of
+ * supported operation modes and rates). */
+int ieee80211_update_hw(struct net_device *dev, struct ieee80211_hw *hw);
+
+/* Unregister a hardware device. This function instructs 802.11 code to free
+ * allocated resources and unregister netdevices from the kernel. */
+void ieee80211_unregister_hw(struct net_device *dev);
+
+/* Free allocated net_device including private data of a driver. */
+void ieee80211_free_hw(struct net_device *dev);
+
+/* Receive frame callback function. The low-level driver uses this function to
+ * send received frames to the IEEE 802.11 code. Receive buffer (skb) must
+ * start with IEEE 802.11 header. */
+void ieee80211_rx(struct net_device *dev, struct sk_buff *skb,
+ struct ieee80211_rx_status *status);
+void ieee80211_rx_irqsafe(struct net_device *dev, struct sk_buff *skb,
+ struct ieee80211_rx_status *status);
+
+/* Transmit status callback function. The low-level driver must call this
+ * function to report transmit status for all the TX frames that had
+ * req_tx_status set in the transmit control fields. In addition, this should
+ * be called at least for all unicast frames to provide information for TX rate
+ * control algorithm. In order to maintain all statistics, this function is
+ * recommended to be called after each frame, including multicast/broadcast, is
+ * sent. */
+void ieee80211_tx_status(struct net_device *dev, struct sk_buff *skb,
+ struct ieee80211_tx_status *status);
+void ieee80211_tx_status_irqsafe(struct net_device *dev, struct sk_buff *skb,
+ struct ieee80211_tx_status *status);
+
+/* Beacon generation function. If the beacon frames are generated by the host
+ * system (i.e., not in hardware/firmware), the low-level driver uses this
+ * function to receive the next beacon frame from the 802.11 code. The
+ * low-level is responsible for calling this function before beacon data is
+ * needed (e.g., based on hardware interrupt). Returned skb is used only once
+ * and low-level driver is responsible of freeing it. */
+struct sk_buff * ieee80211_beacon_get(struct net_device *dev, int bss_idx,
+ struct ieee80211_tx_control *control);
+
+/* Function for accessing buffered broadcast and multicast frames. If
+ * hardware/firmware does not implement buffering of broadcast/multicast
+ * frames when power saving is used, 802.11 code buffers them in the host
+ * memory. The low-level driver uses this function to fetch next buffered
+ * frame. In most cases, this is used when generating beacon frame. This
+ * function returns a pointer to the next buffered skb or NULL if no more
+ * buffered frames are available.
+ *
+ * Note: buffered frames are returned only after DTIM beacon frame was
+ * generated with ieee80211_beacon_get() and the low-level driver must thus
+ * call ieee80211_beacon_get() first. ieee80211_get_buffered_bc() returns
+ * NULL if the previous generated beacon was not DTIM, so the low-level driver
+ * does not need to check for DTIM beacons separately and should be able to
+ * use common code for all beacons. */
+struct sk_buff *
+ieee80211_get_buffered_bc(struct net_device *dev, int bss_idx,
+ struct ieee80211_tx_control *control);
+
+/* Low level drivers that have their own MLME and MAC indicate
+ * the aid for an associating station with this call */
+int ieee80211_set_aid_for_sta(struct net_device *dev, u8 *peer_address,
+ u16 aid);
+
+
+/* Given an sk_buff with a raw 802.11 header at the data pointer this function
+ * returns the 802.11 header length in bytes (not including encryption
+ * headers). If the data in the sk_buff is too short to contain a valid 802.11
+ * header the function returns 0.
+ */
+int ieee80211_get_hdrlen_from_skb(struct sk_buff *skb);
+
+/* Like ieee80211_get_hdrlen_from_skb() but takes a FC in CPU order. */
+int ieee80211_get_hdrlen(u16 fc);
+
+/* Function for net interface operation. IEEE 802.11 may use multiple kernel
+ * netdevices for each hardware device. The low-level driver does not "see"
+ * these interfaces, so it should use this function to perform netif
+ * operations on all interface. */
+typedef enum {
+ NETIF_ATTACH, NETIF_DETACH, NETIF_START, NETIF_STOP, NETIF_WAKE,
+ NETIF_IS_STOPPED, NETIF_UPDATE_TX_START
+} Netif_Oper;
+int ieee80211_netif_oper(struct net_device *dev, Netif_Oper op);
+
+
+/*
+ * Function to get hardware configuration information
+ * by the low level driver should it need it.
+ */
+struct ieee80211_conf *
+ieee80211_get_hw_conf(struct net_device *dev);
+
+
+/* Return a pointer to the low-level private data area for the given device. */
+void * ieee80211_dev_hw_data(struct net_device *dev);
+/* Return a pointer to network statistics data area for the given device. */
+void * ieee80211_dev_stats(struct net_device *dev);
+
+/* Function to indicate Radar Detection. The low level driver must call this
+ * function to indicate the presence of radar in the current channel.
+ * Additionally the radar type also could be sent */
+int ieee80211_radar_status(struct net_device *dev, int channel, int radar,
+ int radar_type);
+
+/* Test modes */
+enum {
+ IEEE80211_TEST_DISABLE = 0 /* terminate testing */,
+ IEEE80211_TEST_UNMASK_CHANNELS = 1 /* allow all channels to be used */,
+ IEEE80211_TEST_CONTINUOUS_TX = 2,
+};
+
+/* Test parameters */
+enum {
+ /* TX power in hardware specific raw value */
+ IEEE80211_TEST_PARAM_TX_POWER_RAW = 0,
+ /* TX rate in hardware specific raw value */
+ IEEE80211_TEST_PARAM_TX_RATE_RAW = 1,
+ /* Continuous TX pattern (32-bit) */
+ IEEE80211_TEST_PARAM_TX_PATTERN = 2,
+ /* TX power in 0.1 dBm, 100 = 10 dBm */
+ IEEE80211_TEST_PARAM_TX_POWER = 3,
+ /* TX rate in 100 kbps, 540 = 54 Mbps */
+ IEEE80211_TEST_PARAM_TX_RATE = 4,
+ IEEE80211_TEST_PARAM_TX_ANT_SEL_RAW = 5,
+};
+
+/* ieee80211_tx_led called with state == 1 when the first frame is queued
+ * with state == 0 when the last frame is transmitted and tx queue is empty
+ */
+void ieee80211_tx_led(int state, struct net_device *dev);
+/* ieee80211_rx_led is called each time frame is received, state is not used
+ * (== 2)
+ */
+void ieee80211_rx_led(int state, struct net_device *dev);
+
+
+/* IEEE 802.11 defines */
+
+#define FCS_LEN 4
+
+#define WLAN_FC_PVER 0x0003
+#define WLAN_FC_TODS 0x0100
+#define WLAN_FC_FROMDS 0x0200
+#define WLAN_FC_MOREFRAG 0x0400
+#define WLAN_FC_RETRY 0x0800
+#define WLAN_FC_PWRMGT 0x1000
+#define WLAN_FC_MOREDATA 0x2000
+#define WLAN_FC_ISWEP 0x4000
+#define WLAN_FC_ORDER 0x8000
+
+#define WLAN_FC_GET_TYPE(fc) (((fc) & 0x000c) >> 2)
+#define WLAN_FC_GET_STYPE(fc) (((fc) & 0x00f0) >> 4)
+
+#define WLAN_GET_SEQ_FRAG(seq) ((seq) & 0x000f)
+#define WLAN_GET_SEQ_SEQ(seq) ((seq) >> 4)
+
+#define WLAN_FC_DATA_PRESENT(fc) (((fc) & 0x4c) == 0x08)
+
+#define WLAN_FC_TYPE_MGMT 0
+#define WLAN_FC_TYPE_CTRL 1
+#define WLAN_FC_TYPE_DATA 2
+
+/* management */
+#define WLAN_FC_STYPE_ASSOC_REQ 0
+#define WLAN_FC_STYPE_ASSOC_RESP 1
+#define WLAN_FC_STYPE_REASSOC_REQ 2
+#define WLAN_FC_STYPE_REASSOC_RESP 3
+#define WLAN_FC_STYPE_PROBE_REQ 4
+#define WLAN_FC_STYPE_PROBE_RESP 5
+#define WLAN_FC_STYPE_BEACON 8
+#define WLAN_FC_STYPE_ATIM 9
+#define WLAN_FC_STYPE_DISASSOC 10
+#define WLAN_FC_STYPE_AUTH 11
+#define WLAN_FC_STYPE_DEAUTH 12
+#define WLAN_FC_STYPE_ACTION 13
+
+/* control */
+#define WLAN_FC_STYPE_PSPOLL 10
+#define WLAN_FC_STYPE_RTS 11
+#define WLAN_FC_STYPE_CTS 12
+#define WLAN_FC_STYPE_ACK 13
+#define WLAN_FC_STYPE_CFEND 14
+#define WLAN_FC_STYPE_CFENDACK 15
+
+/* data */
+#define WLAN_FC_STYPE_DATA 0
+#define WLAN_FC_STYPE_DATA_CFACK 1
+#define WLAN_FC_STYPE_DATA_CFPOLL 2
+#define WLAN_FC_STYPE_DATA_CFACKPOLL 3
+#define WLAN_FC_STYPE_NULLFUNC 4
+#define WLAN_FC_STYPE_CFACK 5
+#define WLAN_FC_STYPE_CFPOLL 6
+#define WLAN_FC_STYPE_CFACKPOLL 7
+#define WLAN_FC_STYPE_QOS_DATA 8
+#define WLAN_FC_STYPE_QOS_DATA_CFACK 9
+#define WLAN_FC_STYPE_QOS_DATA_CFPOLL 10
+#define WLAN_FC_STYPE_QOS_DATA_CFACKPOLL 11
+#define WLAN_FC_STYPE_QOS_NULLFUNC 12
+#define WLAN_FC_STYPE_QOS_CFACK 13
+#define WLAN_FC_STYPE_QOS_CFPOLL 14
+#define WLAN_FC_STYPE_QOS_CFACKPOLL 15
+
+
+#define IEEE80211_MAX_FRAG_THRESHOLD 2346
+#define IEEE80211_MAX_RTS_THRESHOLD 2347
+
+struct ieee80211_hdr {
+ u16 frame_control;
+ u16 duration_id;
+ u8 addr1[6];
+ u8 addr2[6];
+ u8 addr3[6];
+ u16 seq_ctrl;
+ u8 addr4[6];
+} __attribute__ ((packed));
+
+/* return a pointer to the source address (SA) */
+static inline u8 *ieee80211_get_SA(struct ieee80211_hdr *hdr)
+{
+ u8 *raw = (u8 *) hdr;
+ u8 tofrom = (*(raw+1)) & 3; /* get the TODS and FROMDS bits */
+
+ switch (tofrom) {
+ case 2:
+ return hdr->addr3;
+ case 3:
+ return hdr->addr4;
+ }
+ return hdr->addr2;
+}
+
+/* return a pointer to the destination address (DA) */
+static inline u8 *ieee80211_get_DA(struct ieee80211_hdr *hdr)
+{
+ u8 *raw = (u8 *) hdr;
+ u8 to_ds = (*(raw+1)) & 1; /* get the TODS bit */
+
+ if (to_ds)
+ return hdr->addr3;
+ return hdr->addr1;
+}
+
+static inline int ieee80211_get_morefrag(struct ieee80211_hdr *hdr)
+{
+ return (le16_to_cpu(hdr->frame_control) & WLAN_FC_MOREFRAG) != 0;
+}
+
+#endif /* IEEE80211_H */
--- /dev/null
+/*
+ * IEEE 802.11 driver (80211.o) -- hostapd interface
+ * Copyright 2002-2004, Instant802 Networks, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef IEEE80211_COMMON_H
+#define IEEE80211_COMMON_H
+
+/*
+ * This is common header information with user space. It is used on all
+ * frames sent to wlan#ap interface.
+ */
+
+#define IEEE80211_FI_VERSION 0x80211001
+
+struct ieee80211_frame_info {
+ u32 version;
+ u32 length;
+ u64 mactime;
+ u64 hosttime;
+ u32 phytype;
+ u32 channel;
+ u32 datarate;
+ u32 antenna;
+ u32 priority;
+ u32 ssi_type;
+ u32 ssi_signal;
+ u32 ssi_noise;
+ u32 preamble;
+ u32 encoding;
+
+ /* Note: this structure is otherwise identical to capture format used
+ * in linux-wlan-ng, but this additional field is used to provide meta
+ * data about the frame to hostapd. This was the easiest method for
+ * providing this information, but this might change in the future. */
+ u32 msg_type;
+} __attribute__ ((packed));
+
+
+enum ieee80211_msg_type {
+ ieee80211_msg_normal = 0,
+ ieee80211_msg_tx_callback_ack = 1,
+ ieee80211_msg_tx_callback_fail = 2,
+ ieee80211_msg_passive_scan = 3,
+ ieee80211_msg_wep_frame_unknown_key = 4,
+ ieee80211_msg_michael_mic_failure = 5,
+ ieee80211_msg_monitor = 6,
+ ieee80211_msg_sta_not_assoc = 7,
+ ieee80211_msg_set_aid_for_sta = 8 /* used by Intersil MVC driver */,
+ ieee80211_msg_key_threshold_notification = 9,
+ ieee80211_msg_radar = 11,
+};
+
+struct ieee80211_msg_set_aid_for_sta {
+ char sta_address[ETH_ALEN];
+ u16 aid;
+};
+
+struct ieee80211_msg_key_notification {
+ int tx_rx_count;
+ char ifname[IFNAMSIZ];
+ u8 addr[ETH_ALEN]; /* ff:ff:ff:ff:ff:ff for broadcast keys */
+};
+
+
+enum ieee80211_phytype {
+ ieee80211_phytype_fhss_dot11_97 = 1,
+ ieee80211_phytype_dsss_dot11_97 = 2,
+ ieee80211_phytype_irbaseband = 3,
+ ieee80211_phytype_dsss_dot11_b = 4,
+ ieee80211_phytype_pbcc_dot11_b = 5,
+ ieee80211_phytype_ofdm_dot11_g = 6,
+ ieee80211_phytype_pbcc_dot11_g = 7,
+ ieee80211_phytype_ofdm_dot11_a = 8,
+ ieee80211_phytype_dsss_dot11_turbog = 255,
+ ieee80211_phytype_dsss_dot11_turbo = 256,
+};
+
+enum ieee80211_ssi_type {
+ ieee80211_ssi_none = 0,
+ ieee80211_ssi_norm = 1, /* normalized, 0-1000 */
+ ieee80211_ssi_dbm = 2,
+ ieee80211_ssi_raw = 3, /* raw SSI */
+};
+
+struct ieee80211_radar_info {
+ int channel;
+ int radar;
+ int radar_type;
+};
+
+#endif /* IEEE80211_COMMON_H */
--- /dev/null
+/*
+ * IEEE 802.11 -- shared defines for 80211.o and hostapd
+ * Copyright 2002, Jouni Malinen <jkmaline@cc.hut.fi>
+ * Copyright 2002-2004, Instant802 Networks, Inc.
+ * Copyright 2005, Devicescape Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef IEEE802_11_MGMT_H
+#define IEEE802_11_MGMT_H
+
+
+struct ieee80211_mgmt {
+ u16 frame_control;
+ u16 duration;
+ u8 da[6];
+ u8 sa[6];
+ u8 bssid[6];
+ u16 seq_ctrl;
+ union {
+ struct {
+ u16 auth_alg;
+ u16 auth_transaction;
+ u16 status_code;
+ /* possibly followed by Challenge text */
+ u8 variable[0];
+ } __attribute__ ((packed)) auth;
+ struct {
+ u16 reason_code;
+ } __attribute__ ((packed)) deauth;
+ struct {
+ u16 capab_info;
+ u16 listen_interval;
+ /* followed by SSID and Supported rates */
+ u8 variable[0];
+ } __attribute__ ((packed)) assoc_req;
+ struct {
+ u16 capab_info;
+ u16 status_code;
+ u16 aid;
+ /* followed by Supported rates */
+ u8 variable[0];
+ } __attribute__ ((packed)) assoc_resp, reassoc_resp;
+ struct {
+ u16 capab_info;
+ u16 listen_interval;
+ u8 current_ap[6];
+ /* followed by SSID and Supported rates */
+ u8 variable[0];
+ } __attribute__ ((packed)) reassoc_req;
+ struct {
+ u16 reason_code;
+ } __attribute__ ((packed)) disassoc;
+ struct {
+ u8 timestamp[8];
+ u16 beacon_int;
+ u16 capab_info;
+ /* followed by some of SSID, Supported rates,
+ * FH Params, DS Params, CF Params, IBSS Params, TIM */
+ u8 variable[0];
+ } __attribute__ ((packed)) beacon;
+ struct {
+ /* only variable items: SSID, Supported rates */
+ u8 variable[0];
+ } __attribute__ ((packed)) probe_req;
+ struct {
+ u8 timestamp[8];
+ u16 beacon_int;
+ u16 capab_info;
+ /* followed by some of SSID, Supported rates,
+ * FH Params, DS Params, CF Params, IBSS Params */
+ u8 variable[0];
+ } __attribute__ ((packed)) probe_resp;
+ struct {
+ u8 category;
+ union {
+ struct {
+ u8 action_code;
+ u8 dialog_token;
+ u8 status_code;
+ u8 variable[0];
+ } __attribute__ ((packed)) wme_action;
+ struct{
+ u8 action_code;
+ u8 element_id;
+ u8 length;
+ u8 switch_mode;
+ u8 new_chan;
+ u8 switch_count;
+ } __attribute__((packed)) chan_switch;
+ } u;
+ } __attribute__ ((packed)) action;
+ } u;
+} __attribute__ ((packed));
+
+
+/* Authentication algorithms */
+#define WLAN_AUTH_OPEN 0
+#define WLAN_AUTH_SHARED_KEY 1
+#define WLAN_AUTH_LEAP 128
+
+#define WLAN_AUTH_CHALLENGE_LEN 128
+
+#define WLAN_CAPABILITY_ESS BIT(0)
+#define WLAN_CAPABILITY_IBSS BIT(1)
+#define WLAN_CAPABILITY_CF_POLLABLE BIT(2)
+#define WLAN_CAPABILITY_CF_POLL_REQUEST BIT(3)
+#define WLAN_CAPABILITY_PRIVACY BIT(4)
+#define WLAN_CAPABILITY_SHORT_PREAMBLE BIT(5)
+#define WLAN_CAPABILITY_PBCC BIT(6)
+#define WLAN_CAPABILITY_CHANNEL_AGILITY BIT(7)
+/* 802.11h */
+#define WLAN_CAPABILITY_SPECTRUM_MGMT BIT(8)
+#define WLAN_CAPABILITY_SHORT_SLOT_TIME BIT(10)
+#define WLAN_CAPABILITY_DSSS_OFDM BIT(13)
+
+/* Status codes */
+#define WLAN_STATUS_SUCCESS 0
+#define WLAN_STATUS_UNSPECIFIED_FAILURE 1
+#define WLAN_STATUS_CAPS_UNSUPPORTED 10
+#define WLAN_STATUS_REASSOC_NO_ASSOC 11
+#define WLAN_STATUS_ASSOC_DENIED_UNSPEC 12
+#define WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG 13
+#define WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION 14
+#define WLAN_STATUS_CHALLENGE_FAIL 15
+#define WLAN_STATUS_AUTH_TIMEOUT 16
+#define WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA 17
+#define WLAN_STATUS_ASSOC_DENIED_RATES 18
+/* 802.11b */
+#define WLAN_STATUS_ASSOC_DENIED_NOSHORT 19
+#define WLAN_STATUS_ASSOC_DENIED_NOPBCC 20
+#define WLAN_STATUS_ASSOC_DENIED_NOAGILITY 21
+/* 802.11h */
+#define WLAN_STATUS_SPEC_MGMT_REQUIRED 22
+#define WLAN_STATUS_PWR_CAPABILITY_NOT_VALID 23
+#define WLAN_STATUS_SUPPORTED_CHANNEL_NOT_VALID 24
+/* 802.11g */
+#define WLAN_STATUS_ASSOC_DENOED_NO_SHORT_SLOT_TIME 25
+#define WLAN_STATUS_ASSOC_DENOED_NO_ER_PBCC 26
+#define WLAN_STATUS_ASSOC_DENOED_NO_DSSS_OFDM 27
+
+
+/* Reason codes */
+#define WLAN_REASON_UNSPECIFIED 1
+#define WLAN_REASON_PREV_AUTH_NOT_VALID 2
+#define WLAN_REASON_DEAUTH_LEAVING 3
+#define WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY 4
+#define WLAN_REASON_DISASSOC_AP_BUSY 5
+#define WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA 6
+#define WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA 7
+#define WLAN_REASON_DISASSOC_STA_HAS_LEFT 8
+#define WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH 9
+/* 802.11h */
+#define WLAN_REASON_PWR_CAPABILITY_NOT_VALID 10
+#define WLAN_REASON_SUPPORTED_CHANNEL_NOT_VALID 11
+
+#define WLAN_REASON_MIC_FAILURE 14
+
+
+/* Information Element IDs */
+#define WLAN_EID_SSID 0
+#define WLAN_EID_SUPP_RATES 1
+#define WLAN_EID_FH_PARAMS 2
+#define WLAN_EID_DS_PARAMS 3
+#define WLAN_EID_CF_PARAMS 4
+#define WLAN_EID_TIM 5
+#define WLAN_EID_IBSS_PARAMS 6
+#define WLAN_EID_COUNTRY 7
+#define WLAN_EID_CHALLENGE 16
+/* EIDs defined as part fo 11h - starts */
+#define WLAN_EID_PWR_CONSTRAINT 32
+#define WLAN_EID_PWR_CAPABILITY 33
+#define WLAN_EID_TPC_REQUEST 34
+#define WLAN_EID_TPC_REPORT 35
+#define WLAN_EID_SUPPORTED_CHANNELS 36
+#define WLAN_EID_CHANNEL_SWITCH 37
+#define WLAN_EID_MEASURE_REQUEST 38
+#define WLAN_EID_MEASURE_REPORT 39
+#define WLAN_EID_QUITE 40
+#define WLAN_EID_IBSS_DFS 41
+/* EIDs defined as part fo 11h - ends */
+#define WLAN_EID_ERP_INFO 42
+#define WLAN_EID_RSN 48
+#define WLAN_EID_EXT_SUPP_RATES 50
+#define WLAN_EID_WPA 221
+#define WLAN_EID_GENERIC 221
+#define WLAN_EID_VENDOR_SPECIFIC 221
+
+
+
+#define ATHEROS_INFO_USEXR BIT(3)
+
+#endif /* IEEE802_11_MGMT_H */
--- /dev/null
+/*
+ * IEEE 802.11 -- shared defines for low-level drivers, 80211.o, and hostapd
+ * Copyright 2002-2004, Instant802 Networks, Inc.
+ * Copyright 2005, Devicescape Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef IEEE80211_SHARED_H
+#define IEEE80211_SHARED_H
+
+/* 802.11g is backwards-compatible with 802.11b, so a wlan card can
+ * actually be both in 11b and 11g modes at the same time. */
+enum {
+ MODE_IEEE80211A = 0 /* IEEE 802.11a */,
+ MODE_IEEE80211B = 1 /* IEEE 802.11b only */,
+ MODE_ATHEROS_TURBO = 2 /* Atheros Turbo mode (2x.11a at 5 GHz) */,
+ MODE_IEEE80211G = 3 /* IEEE 802.11g (and 802.11b compatibility) */,
+ MODE_ATHEROS_TURBOG = 4 /* Atheros Turbo mode (2x.11g at 2.4 GHz) */,
+ MODE_ATHEROS_PRIME = 5 /* Atheros Dynamic Turbo mode */,
+ MODE_ATHEROS_PRIMEG = 6 /* Atheros Dynamic Turbo mode G */,
+ MODE_ATHEROS_XR = 7 /* Atheros XR mode */,
+ NUM_IEEE80211_MODES = 8
+};
+
+#define IEEE80211_CHAN_W_SCAN 0x00000001
+#define IEEE80211_CHAN_W_ACTIVE_SCAN 0x00000002
+#define IEEE80211_CHAN_W_IBSS 0x00000004
+
+/* Low-level driver should set PREAMBLE2, OFDM, CCK, and TURBO flags.
+ * BASIC, SUPPORTED, ERP, and MANDATORY flags are set in 80211.o based on the
+ * configuration. */
+#define IEEE80211_RATE_ERP 0x00000001
+#define IEEE80211_RATE_BASIC 0x00000002
+#define IEEE80211_RATE_PREAMBLE2 0x00000004
+#define IEEE80211_RATE_SUPPORTED 0x00000010
+#define IEEE80211_RATE_OFDM 0x00000020
+#define IEEE80211_RATE_CCK 0x00000040
+#define IEEE80211_RATE_TURBO 0x00000080
+#define IEEE80211_RATE_MANDATORY 0x00000100
+#define IEEE80211_RATE_XR 0x00000200
+
+#define IEEE80211_RATE_CCK_2 (IEEE80211_RATE_CCK | IEEE80211_RATE_PREAMBLE2)
+#define IEEE80211_RATE_MODULATION(f) \
+(f & (IEEE80211_RATE_CCK | IEEE80211_RATE_OFDM))
+
+
+#endif /* IEEE80211_SHARED_H */
--- /dev/null
+/*
+ * Michael MIC implementation - optimized for TKIP MIC operations
+ * Copyright 2002-2003, Instant802 Networks, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/types.h>
+
+#include "michael.h"
+
+static inline u32 rotr(u32 val, int bits)
+{
+ return (val >> bits) | (val << (32 - bits));
+}
+
+
+static inline u32 rotl(u32 val, int bits)
+{
+ return (val << bits) | (val >> (32 - bits));
+}
+
+
+static inline u32 xswap(u32 val)
+{
+ return ((val & 0xff00ff00) >> 8) | ((val & 0x00ff00ff) << 8);
+}
+
+
+#define michael_block(l, r) \
+do { \
+ r ^= rotl(l, 17); \
+ l += r; \
+ r ^= xswap(l); \
+ l += r; \
+ r ^= rotl(l, 3); \
+ l += r; \
+ r ^= rotr(l, 2); \
+ l += r; \
+} while (0)
+
+
+static inline u32 michael_get32(u8 *data)
+{
+ return data[0] | (data[1] << 8) | (data[2] << 16) | (data[3] << 24);
+}
+
+
+static inline void michael_put32(u32 val, u8 *data)
+{
+ data[0] = val & 0xff;
+ data[1] = (val >> 8) & 0xff;
+ data[2] = (val >> 16) & 0xff;
+ data[3] = (val >> 24) & 0xff;
+}
+
+
+void michael_mic(u8 *key, u8 *da, u8 *sa, u8 priority,
+ u8 *data, size_t data_len, u8 *mic)
+{
+ u32 l, r, val;
+ size_t block, blocks, left;
+
+ l = michael_get32(key);
+ r = michael_get32(key + 4);
+
+ /* A pseudo header (DA, SA, Priority, 0, 0, 0) is used in Michael MIC
+ * calculation, but it is _not_ transmitted */
+ l ^= michael_get32(da);
+ michael_block(l, r);
+ l ^= da[4] | (da[5] << 8) | (sa[0] << 16) | (sa[1] << 24);
+ michael_block(l, r);
+ l ^= michael_get32(&sa[2]);
+ michael_block(l, r);
+ l ^= priority;
+ michael_block(l, r);
+
+ /* Real data */
+ blocks = data_len / 4;
+ left = data_len % 4;
+
+ for (block = 0; block < blocks; block++) {
+ l ^= michael_get32(&data[block * 4]);
+ michael_block(l, r);
+ }
+
+ /* Partial block of 0..3 bytes and padding: 0x5a + 4..7 zeros to make
+ * total length a multiple of 4. */
+ val = 0x5a;
+ while (left > 0) {
+ val <<= 8;
+ left--;
+ val |= data[blocks * 4 + left];
+ }
+ l ^= val;
+ michael_block(l, r);
+ /* last block is zero, so l ^ 0 = l */
+ michael_block(l, r);
+
+ michael_put32(l, mic);
+ michael_put32(r, mic + 4);
+}
--- /dev/null
+/*
+ * Michael MIC implementation - optimized for TKIP MIC operations
+ * Copyright 2002-2003, Instant802 Networks, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef MICHAEL_H
+#define MICHAEL_H
+
+#define MICHAEL_MIC_LEN 8
+
+void michael_mic(u8 *key, u8 *da, u8 *sa, u8 priority,
+ u8 *data, size_t data_len, u8 *mic);
+
+#endif /* MICHAEL_H */
--- /dev/null
+/*
+ * Copyright 2002-2005, Instant802 Networks, Inc.
+ * Copyright 2005, Devicescape Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/config.h>
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/skbuff.h>
+#include <linux/compiler.h>
+
+#include <net/ieee80211.h>
+#include "ieee80211_i.h"
+#include "rate_control.h"
+
+
+/* This is a minimal implementation of TX rate controlling that can be used
+ * as the default when no improved mechanisms are available. */
+
+
+#define RATE_CONTROL_EMERG_DEC 2
+#define RATE_CONTROL_INTERVAL (HZ / 20)
+#define RATE_CONTROL_MIN_TX 10
+
+
+static void rate_control_rate_inc(struct ieee80211_local *local,
+ struct sta_info *sta)
+{
+ struct ieee80211_sub_if_data *sdata;
+ int i = sta->txrate;
+ int maxrate;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev);
+ if (sdata->bss && sdata->bss->force_unicast_rateidx > -1) {
+ /* forced unicast rate - do not change STA rate */
+ return;
+ }
+
+ maxrate = sdata->bss ? sdata->bss->max_ratectrl_rateidx : -1;
+
+ if (i > local->num_curr_rates)
+ i = local->num_curr_rates - 2;
+
+ while (i + 1 < local->num_curr_rates) {
+ i++;
+ if (sta->supp_rates & BIT(i) &&
+ local->curr_rates[i].flags & IEEE80211_RATE_SUPPORTED &&
+ (maxrate < 0 || i <= maxrate)) {
+ sta->txrate = i;
+ break;
+ }
+ }
+}
+
+
+static void rate_control_rate_dec(struct ieee80211_local *local,
+ struct sta_info *sta)
+{
+ struct ieee80211_sub_if_data *sdata;
+ int i = sta->txrate;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev);
+ if (sdata->bss && sdata->bss->force_unicast_rateidx > -1) {
+ /* forced unicast rate - do not change STA rate */
+ return;
+ }
+
+ if (i > local->num_curr_rates)
+ i = local->num_curr_rates;
+
+ while (i > 0) {
+ i--;
+ if (sta->supp_rates & BIT(i) &&
+ local->curr_rates[i].flags & IEEE80211_RATE_SUPPORTED) {
+ sta->txrate = i;
+ break;
+ }
+ }
+}
+
+
+static struct ieee80211_rate *
+rate_control_lowest_rate(struct ieee80211_local *local)
+{
+ int i;
+
+ for (i = 0; i < local->num_curr_rates; i++) {
+ struct ieee80211_rate *rate = &local->curr_rates[i];
+
+ if (rate->flags & IEEE80211_RATE_SUPPORTED
+ )
+ return rate;
+ }
+
+ printk(KERN_DEBUG "rate_control_lowest_rate - no supported rates "
+ "found\n");
+ return &local->curr_rates[0];
+}
+
+
+struct global_rate_control {
+ int dummy;
+};
+
+struct sta_rate_control {
+ unsigned long last_rate_change;
+ u32 tx_num_failures;
+ u32 tx_num_xmit;
+
+ unsigned long avg_rate_update;
+ u32 tx_avg_rate_sum;
+ u32 tx_avg_rate_num;
+};
+
+
+static void rate_control_simple_tx_status(struct net_device *dev,
+ struct sk_buff *skb,
+ struct ieee80211_tx_status *status)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ struct sta_info *sta;
+ struct sta_rate_control *srctrl;
+
+ sta = sta_info_get(local, hdr->addr1);
+
+ if (!sta)
+ return;
+
+ srctrl = sta->rate_ctrl_priv;
+ srctrl->tx_num_xmit++;
+ if (status->excessive_retries) {
+ sta->antenna_sel = sta->antenna_sel == 1 ? 2 : 1;
+ if (local->sta_antenna_sel == STA_ANTENNA_SEL_SW_CTRL_DEBUG) {
+ printk(KERN_DEBUG "%s: " MACSTR " TX antenna --> %d "
+ "(@%lu)\n",
+ dev->name, MAC2STR(hdr->addr1),
+ sta->antenna_sel, jiffies);
+ }
+ srctrl->tx_num_failures++;
+ sta->tx_retry_failed++;
+ sta->tx_num_consecutive_failures++;
+ sta->tx_num_mpdu_fail++;
+ } else {
+ sta->last_ack_rssi[0] = sta->last_ack_rssi[1];
+ sta->last_ack_rssi[1] = sta->last_ack_rssi[2];
+ sta->last_ack_rssi[2] = status->ack_signal;
+ sta->tx_num_consecutive_failures = 0;
+ sta->tx_num_mpdu_ok++;
+ }
+ sta->tx_retry_count += status->retry_count;
+ sta->tx_num_mpdu_fail += status->retry_count;
+
+ if (time_after(jiffies,
+ srctrl->last_rate_change + RATE_CONTROL_INTERVAL) &&
+ srctrl->tx_num_xmit > RATE_CONTROL_MIN_TX) {
+ u32 per_failed;
+ srctrl->last_rate_change = jiffies;
+
+ per_failed = (100 * sta->tx_num_mpdu_fail) /
+ (sta->tx_num_mpdu_fail + sta->tx_num_mpdu_ok);
+ /* TODO: calculate average per_failed to make adjusting
+ * parameters easier */
+#if 0
+ if (net_ratelimit()) {
+ printk(KERN_DEBUG "MPDU fail=%d ok=%d per_failed=%d\n",
+ sta->tx_num_mpdu_fail, sta->tx_num_mpdu_ok,
+ per_failed);
+ }
+#endif
+
+ if (per_failed > local->rate_ctrl_num_down) {
+ rate_control_rate_dec(local, sta);
+ } else if (per_failed < local->rate_ctrl_num_up) {
+ rate_control_rate_inc(local, sta);
+ }
+ srctrl->tx_avg_rate_sum += local->curr_rates[sta->txrate].rate;
+ srctrl->tx_avg_rate_num++;
+ srctrl->tx_num_failures = 0;
+ srctrl->tx_num_xmit = 0;
+ } else if (sta->tx_num_consecutive_failures >=
+ RATE_CONTROL_EMERG_DEC) {
+ rate_control_rate_dec(local, sta);
+ }
+
+ if (srctrl->avg_rate_update + 60 * HZ < jiffies) {
+ srctrl->avg_rate_update = jiffies;
+ if (srctrl->tx_avg_rate_num > 0) {
+#ifdef CONFIG_IEEE80211_VERBOSE_DEBUG
+ printk(KERN_DEBUG "%s: STA " MACSTR " Average rate: "
+ "%d (%d/%d)\n",
+ dev->name, MAC2STR(sta->addr),
+ srctrl->tx_avg_rate_sum /
+ srctrl->tx_avg_rate_num,
+ srctrl->tx_avg_rate_sum,
+ srctrl->tx_avg_rate_num);
+#endif /* CONFIG_IEEE80211_VERBOSE_DEBUG */
+ srctrl->tx_avg_rate_sum = 0;
+ srctrl->tx_avg_rate_num = 0;
+ }
+ }
+
+ sta_info_release(local, sta);
+}
+
+
+static struct ieee80211_rate *
+rate_control_simple_get_rate(struct net_device *dev, struct sk_buff *skb,
+ struct rate_control_extra *extra)
+{
+ struct ieee80211_local *local = dev->priv;
+ struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ struct sta_info *sta;
+ int rateidx, nonerp_idx;
+ u16 fc;
+
+ memset(extra, 0, sizeof(*extra));
+
+ fc = le16_to_cpu(hdr->frame_control);
+ if (WLAN_FC_GET_TYPE(fc) != WLAN_FC_TYPE_DATA ||
+ (hdr->addr1[0] & 0x01)) {
+ /* Send management frames and broadcast/multicast data using
+ * lowest rate. */
+ /* TODO: this could probably be improved.. */
+ return rate_control_lowest_rate(local);
+ }
+
+ sta = sta_info_get(local, hdr->addr1);
+
+ if (!sta)
+ return rate_control_lowest_rate(local);
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (sdata->bss && sdata->bss->force_unicast_rateidx > -1)
+ sta->txrate = sdata->bss->force_unicast_rateidx;
+
+ rateidx = sta->txrate;
+
+ if (rateidx >= local->num_curr_rates)
+ rateidx = local->num_curr_rates - 1;
+
+ sta->last_txrate = rateidx;
+ nonerp_idx = rateidx;
+ while (nonerp_idx > 0 &&
+ ((local->curr_rates[nonerp_idx].flags & IEEE80211_RATE_ERP) ||
+ !(local->curr_rates[nonerp_idx].flags &
+ IEEE80211_RATE_SUPPORTED) ||
+ !(sta->supp_rates & BIT(nonerp_idx))))
+ nonerp_idx--;
+ extra->nonerp_idx = nonerp_idx;
+ extra->nonerp = &local->curr_rates[extra->nonerp_idx];
+
+ sta_info_release(local, sta);
+
+ return &local->curr_rates[rateidx];
+}
+
+
+static void rate_control_simple_rate_init(struct ieee80211_local *local,
+ struct sta_info *sta)
+{
+ int i;
+ sta->txrate = 0;
+ /* TODO: what is a good starting rate for STA? About middle? Maybe not
+ * the lowest or the highest rate.. Could consider using RSSI from
+ * previous packets? Need to have IEEE 802.1X auth succeed immediately
+ * after assoc.. */
+ for (i = 0; i < local->num_curr_rates; i++) {
+ if ((sta->supp_rates & BIT(i)) &&
+ (local->curr_rates[i].flags & IEEE80211_RATE_SUPPORTED))
+ sta->txrate = i;
+ }
+}
+
+
+static void * rate_control_simple_alloc(struct ieee80211_local *local)
+{
+ struct global_rate_control *rctrl;
+
+ rctrl = kmalloc(sizeof(*rctrl), GFP_ATOMIC);
+ if (rctrl == NULL) {
+ return NULL;
+ }
+ memset(rctrl, 0, sizeof(*rctrl));
+ return rctrl;
+}
+
+
+static void rate_control_simple_free(void *priv)
+{
+ struct global_rate_control *rctrl = priv;
+ kfree(rctrl);
+}
+
+
+static void rate_control_simple_clear(void *priv)
+{
+}
+
+
+static void * rate_control_simple_alloc_sta(void)
+{
+ struct sta_rate_control *rctrl;
+
+ rctrl = kmalloc(sizeof(*rctrl), GFP_ATOMIC);
+ if (rctrl == NULL) {
+ return NULL;
+ }
+ memset(rctrl, 0, sizeof(*rctrl));
+ return rctrl;
+}
+
+
+static void rate_control_simple_free_sta(void *priv)
+{
+ struct sta_rate_control *rctrl = priv;
+ kfree(rctrl);
+}
+
+
+static int rate_control_simple_status_sta(struct ieee80211_local *local,
+ struct sta_info *sta, char *buf)
+{
+ char *p = buf;
+ struct sta_rate_control *srctrl = sta->rate_ctrl_priv;
+
+ p += sprintf(p, "tx_avg_rate_sum=%d\n", srctrl->tx_avg_rate_sum);
+ p += sprintf(p, "tx_avg_rate_num=%d\n", srctrl->tx_avg_rate_num);
+ if (srctrl->tx_avg_rate_num)
+ p += sprintf(p, "tx_avg_rate_avg=%d\n",
+ srctrl->tx_avg_rate_sum /
+ srctrl->tx_avg_rate_num);
+ return p - buf;
+}
+
+
+static int rate_control_simple_status_global(struct ieee80211_local *local,
+ char *buf)
+{
+ return 0;
+}
+
+
+static struct rate_control_ops rate_control_simple = {
+ .name = "simple",
+ .tx_status = rate_control_simple_tx_status,
+ .get_rate = rate_control_simple_get_rate,
+ .rate_init = rate_control_simple_rate_init,
+ .clear = rate_control_simple_clear,
+ .status_sta = rate_control_simple_status_sta,
+ .status_global = rate_control_simple_status_global,
+ .alloc = rate_control_simple_alloc,
+ .free = rate_control_simple_free,
+ .alloc_sta = rate_control_simple_alloc_sta,
+ .free_sta = rate_control_simple_free_sta,
+};
+
+
+int __init rate_control_simple_init(void)
+{
+ return ieee80211_rate_control_register(&rate_control_simple);
+}
+
+
+static void __exit rate_control_simple_exit(void)
+{
+ ieee80211_rate_control_unregister(&rate_control_simple);
+}
+
+
+module_init(rate_control_simple_init);
+module_exit(rate_control_simple_exit);
--- /dev/null
+/*
+ * Copyright 2002-2005, Instant802 Networks, Inc.
+ * Copyright 2005, Devicescape Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef RATE_CONTROL
+#define RATE_CONTROL
+
+#define RATE_CONTROL_NUM_DOWN 20
+#define RATE_CONTROL_NUM_UP 15
+
+
+struct rate_control_extra {
+ /* values from rate_control_get_rate() to the caller: */
+ struct ieee80211_rate *probe; /* probe with this rate, or NULL for no
+ * probing */
+ int startidx, endidx, rateidx;
+ struct ieee80211_rate *nonerp;
+ int nonerp_idx;
+
+ /* parameters from the caller to rate_control_get_rate(): */
+ int mgmt_data; /* this is data frame that is used for management
+ * (e.g., IEEE 802.1X EAPOL) */
+ u16 ethertype;
+};
+
+
+struct rate_control_ops {
+ const char *name;
+ void (*tx_status)(struct net_device *dev, struct sk_buff *skb,
+ struct ieee80211_tx_status *status);
+ struct ieee80211_rate *
+ (*get_rate)(struct net_device *dev, struct sk_buff *skb,
+ struct rate_control_extra *extra);
+ void (*rate_init)(struct ieee80211_local *local, struct sta_info *sta);
+ void (*clear)(void *priv);
+ int (*status_sta)(struct ieee80211_local *local,
+ struct sta_info *sta, char *buf);
+ int (*status_global)(struct ieee80211_local *local, char *buf);
+
+ void * (*alloc)(struct ieee80211_local *local);
+ void (*free)(void *priv);
+ void * (*alloc_sta)(void);
+ void (*free_sta)(void *priv);
+};
+
+
+int ieee80211_rate_control_register(struct rate_control_ops *ops);
+void ieee80211_rate_control_unregister(struct rate_control_ops *ops);
+
+
+static inline void rate_control_tx_status(struct net_device *dev,
+ struct sk_buff *skb,
+ struct ieee80211_tx_status *status)
+{
+ struct ieee80211_local *local = dev->priv;
+ local->rate_ctrl->tx_status(dev, skb, status);
+}
+
+
+static inline struct ieee80211_rate *
+rate_control_get_rate(struct net_device *dev, struct sk_buff *skb,
+ struct rate_control_extra *extra)
+{
+ struct ieee80211_local *local = dev->priv;
+ return local->rate_ctrl->get_rate(dev, skb, extra);
+}
+
+
+static inline void rate_control_rate_init(struct ieee80211_local *local,
+ struct sta_info *sta)
+{
+ local->rate_ctrl->rate_init(local, sta);
+}
+
+
+static inline void rate_control_clear(struct ieee80211_local *local)
+{
+ local->rate_ctrl->clear(local->rate_ctrl_priv);
+}
+
+
+static inline int rate_control_status_sta(struct ieee80211_local *local,
+ struct sta_info *sta, char *buf)
+{
+ return local->rate_ctrl->status_sta(local, sta, buf);
+}
+
+
+static inline int rate_control_status_global(struct ieee80211_local *local,
+ char *buf)
+{
+ return local->rate_ctrl->status_global(local, buf);
+}
+
+
+static inline void * rate_control_alloc(struct ieee80211_local *local)
+{
+ return local->rate_ctrl->alloc(local);
+}
+
+
+static inline void rate_control_free(struct ieee80211_local *local)
+{
+ if (local->rate_ctrl == NULL || local->rate_ctrl_priv == NULL)
+ return;
+ local->rate_ctrl->free(local->rate_ctrl_priv);
+ local->rate_ctrl_priv = NULL;
+}
+
+
+static inline void * rate_control_alloc_sta(struct ieee80211_local *local)
+{
+ return local->rate_ctrl->alloc_sta();
+}
+
+
+static inline void rate_control_free_sta(struct ieee80211_local *local,
+ void *priv)
+{
+ local->rate_ctrl->free_sta(priv);
+}
+
+#endif /* RATE_CONTROL */
--- /dev/null
+/*
+ * Copyright 2002-2005, Instant802 Networks, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/config.h>
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/skbuff.h>
+#include <linux/if_arp.h>
+
+#include <net/ieee80211.h>
+#include "ieee80211_i.h"
+#include "ieee80211_proc.h"
+#include "rate_control.h"
+
+
+/* Caller must hold local->sta_lock */
+static void sta_info_hash_add(struct ieee80211_local *local,
+ struct sta_info *sta)
+{
+ sta->hnext = local->sta_hash[STA_HASH(sta->addr)];
+ local->sta_hash[STA_HASH(sta->addr)] = sta;
+}
+
+
+/* Caller must hold local->sta_lock */
+static void sta_info_hash_del(struct ieee80211_local *local,
+ struct sta_info *sta)
+{
+ struct sta_info *s;
+
+ s = local->sta_hash[STA_HASH(sta->addr)];
+ if (s == NULL)
+ return;
+ if (memcmp(s->addr, sta->addr, ETH_ALEN) == 0) {
+ local->sta_hash[STA_HASH(sta->addr)] = s->hnext;
+ return;
+ }
+
+ while (s->hnext != NULL &&
+ memcmp(s->hnext->addr, sta->addr, ETH_ALEN) != 0)
+ s = s->hnext;
+ if (s->hnext != NULL)
+ s->hnext = s->hnext->hnext;
+ else
+ printk(KERN_ERR "%s: could not remove STA " MACSTR " from "
+ "hash table\n", local->mdev->name, MAC2STR(sta->addr));
+}
+
+
+struct sta_info * sta_info_get(struct ieee80211_local *local, u8 *addr)
+{
+ struct sta_info *sta;
+
+ spin_lock_bh(&local->sta_lock);
+ sta = local->sta_hash[STA_HASH(addr)];
+ while (sta) {
+ if (memcmp(sta->addr, addr, ETH_ALEN) == 0) {
+ atomic_inc(&sta->users);
+ break;
+ }
+ sta = sta->hnext;
+ }
+ spin_unlock_bh(&local->sta_lock);
+
+ return sta;
+}
+
+
+int sta_info_min_txrate_get(struct ieee80211_local *local)
+{
+ struct sta_info *sta;
+ int min_txrate = 9999999;
+ int i;
+
+ spin_lock_bh(&local->sta_lock);
+ for (i = 0; i < STA_HASH_SIZE; i++) {
+ sta = local->sta_hash[i];
+ while (sta) {
+ if (sta->txrate < min_txrate)
+ min_txrate = sta->txrate;
+ sta = sta->hnext;
+ }
+ }
+ spin_unlock_bh(&local->sta_lock);
+ if (min_txrate == 9999999)
+ min_txrate = 0;
+
+ return min_txrate;
+}
+
+
+void sta_info_release(struct ieee80211_local *local, struct sta_info *sta)
+{
+ struct sk_buff *skb;
+
+ if (!atomic_dec_and_test(&sta->users))
+ return;
+
+ /* free sta structure; it has already been removed from
+ * hash table etc. external structures. Make sure that all
+ * buffered frames are release (one might have been added
+ * after sta_info_free() was called). */
+ while ((skb = skb_dequeue(&sta->ps_tx_buf)) != NULL) {
+ local->total_ps_buffered--;
+ dev_kfree_skb_any(skb);
+ }
+ while ((skb = skb_dequeue(&sta->tx_filtered)) != NULL) {
+ dev_kfree_skb_any(skb);
+ }
+ rate_control_free_sta(local, sta->rate_ctrl_priv);
+ kfree(sta);
+}
+
+
+struct sta_info * sta_info_add(struct ieee80211_local *local,
+ struct net_device *dev, u8 *addr)
+{
+ struct sta_info *sta;
+
+ sta = kmalloc(sizeof(*sta), GFP_ATOMIC);
+ if (!sta)
+ return NULL;
+
+ memset(sta, 0, sizeof(*sta));
+
+ sta->rate_ctrl_priv = rate_control_alloc_sta(local);
+ if (sta->rate_ctrl_priv == NULL) {
+ kfree(sta);
+ return NULL;
+ }
+
+ memcpy(sta->addr, addr, ETH_ALEN);
+ sta->dev = dev;
+ skb_queue_head_init(&sta->ps_tx_buf);
+ skb_queue_head_init(&sta->tx_filtered);
+ atomic_inc(&sta->users); /* sta in hashlist etc, decremented by
+ * sta_info_free() */
+ atomic_inc(&sta->users); /* sta used by caller, decremented by
+ * sta_info_release() */
+ spin_lock_bh(&local->sta_lock);
+ list_add(&sta->list, &local->sta_list);
+ local->num_sta++;
+ sta_info_hash_add(local, sta);
+ spin_unlock_bh(&local->sta_lock);
+ if (local->hw->sta_table_notification)
+ local->hw->sta_table_notification(local->mdev, local->num_sta);
+ sta->key_idx_compression = HW_KEY_IDX_INVALID;
+
+#ifdef CONFIG_IEEE80211_VERBOSE_DEBUG
+ printk(KERN_DEBUG "%s: Added STA " MACSTR "\n",
+ dev->name, MAC2STR(addr));
+#endif /* CONFIG_IEEE80211_VERBOSE_DEBUG */
+
+ if (!in_interrupt()) {
+ ieee80211_proc_init_sta(local, sta);
+ } else {
+ /* procfs entry adding might sleep, so schedule process context
+ * task for adding proc entry for STAs that do not yet have
+ * one. */
+ schedule_work(&local->sta_proc_add);
+ }
+
+ return sta;
+}
+
+
+void sta_info_free(struct ieee80211_local *local, struct sta_info *sta,
+ int locked)
+{
+ struct sk_buff *skb;
+ struct ieee80211_sub_if_data *sdata;
+
+ if (!locked)
+ spin_lock_bh(&local->sta_lock);
+ sta_info_hash_del(local, sta);
+ list_del(&sta->list);
+ sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev);
+ if (sta->flags & WLAN_STA_PS) {
+ sta->flags &= ~WLAN_STA_PS;
+ if (sdata->bss)
+ atomic_dec(&sdata->bss->num_sta_ps);
+ }
+ local->num_sta--;
+ sta_info_remove_aid_ptr(sta);
+ if (!locked)
+ spin_unlock_bh(&local->sta_lock);
+ if (local->hw->sta_table_notification)
+ local->hw->sta_table_notification(local->mdev, local->num_sta);
+
+ while ((skb = skb_dequeue(&sta->ps_tx_buf)) != NULL) {
+ local->total_ps_buffered--;
+ dev_kfree_skb_any(skb);
+ }
+ while ((skb = skb_dequeue(&sta->tx_filtered)) != NULL) {
+ dev_kfree_skb_any(skb);
+ }
+
+ if (sta->key) {
+ if (local->hw->set_key) {
+ struct ieee80211_key_conf *key;
+ key = ieee80211_key_data2conf(local, sta->key);
+ if (key) {
+ local->hw->set_key(local->mdev, DISABLE_KEY,
+ sta->addr, key, sta->aid);
+ kfree(key);
+ }
+ }
+ kfree(sta->key);
+ sta->key = NULL;
+ } else if (sta->key_idx_compression != HW_KEY_IDX_INVALID) {
+ struct ieee80211_key_conf conf;
+ memset(&conf, 0, sizeof(conf));
+ conf.hw_key_idx = sta->key_idx_compression;
+ conf.alg = ALG_NULL;
+ conf.force_sw_encrypt = 1;
+ local->hw->set_key(local->mdev, DISABLE_KEY, sta->addr, &conf,
+ sta->aid);
+ sta->key_idx_compression = HW_KEY_IDX_INVALID;
+ }
+
+#ifdef CONFIG_IEEE80211_VERBOSE_DEBUG
+ printk(KERN_DEBUG "%s: Removed STA " MACSTR "\n",
+ local->mdev->name, MAC2STR(sta->addr));
+#endif /* CONFIG_IEEE80211_VERBOSE_DEBUG */
+
+ ieee80211_proc_deinit_sta(local, sta);
+
+ if (atomic_read(&sta->users) != 1) {
+ /* This is OK, but printed for debugging. The station structure
+ * will be removed when the other user of the data calls
+ * sta_info_release(). */
+ printk(KERN_DEBUG "%s: STA " MACSTR " users count %d when "
+ "removing it\n", local->mdev->name, MAC2STR(sta->addr),
+ atomic_read(&sta->users));
+ }
+
+ sta_info_release(local, sta);
+}
+
+
+static inline int sta_info_buffer_expired(struct sk_buff *skb)
+{
+ struct ieee80211_tx_packet_data *pkt_data;
+ if (!skb)
+ return 0;
+
+ /* TODO: this could be improved by passing STA listen interval into
+ * the kernel driver and expiring frames after 2 x listen_interval x
+ * beacon interval */
+
+ pkt_data = (struct ieee80211_tx_packet_data *) skb->cb;
+
+ if (pkt_data->magic != IEEE80211_CB_MAGIC)
+ return 1;
+
+ return time_after(jiffies, pkt_data->jiffies + STA_TX_BUFFER_EXPIRE);
+}
+
+
+static void sta_info_cleanup_expire_buffered(struct ieee80211_local *local,
+ struct sta_info *sta)
+{
+ unsigned long flags;
+ struct sk_buff *skb;
+
+ if (skb_queue_empty(&sta->ps_tx_buf))
+ return;
+
+ for (;;) {
+ spin_lock_irqsave(&sta->ps_tx_buf.lock, flags);
+ skb = skb_peek(&sta->ps_tx_buf);
+ if (sta_info_buffer_expired(skb))
+ skb = __skb_dequeue(&sta->ps_tx_buf);
+ else
+ skb = NULL;
+ spin_unlock_irqrestore(&sta->ps_tx_buf.lock, flags);
+
+ if (skb) {
+ local->total_ps_buffered--;
+ printk(KERN_DEBUG "Buffered frame expired (STA "
+ MACSTR ")\n", MAC2STR(sta->addr));
+ dev_kfree_skb(skb);
+ } else
+ break;
+ }
+}
+
+
+static void sta_info_cleanup(unsigned long data)
+{
+ struct ieee80211_local *local = (struct ieee80211_local *) data;
+ struct list_head *ptr;
+
+ spin_lock_bh(&local->sta_lock);
+ ptr = local->sta_list.next;
+ while (ptr && ptr != &local->sta_list) {
+ struct sta_info *sta = (struct sta_info *) ptr;
+ atomic_inc(&sta->users);
+ sta_info_cleanup_expire_buffered(local, sta);
+ sta_info_release(local, sta);
+ ptr = ptr->next;
+ }
+ spin_unlock_bh(&local->sta_lock);
+
+ local->sta_cleanup.expires = jiffies + STA_INFO_CLEANUP_INTERVAL;
+ add_timer(&local->sta_cleanup);
+}
+
+
+static void sta_info_proc_add_task(void *data)
+{
+ struct ieee80211_local *local = data;
+ struct list_head *ptr;
+ struct sta_info *sta;
+ int max_adds = 100;
+
+ while (max_adds > 0) {
+ sta = NULL;
+ spin_lock_bh(&local->sta_lock);
+ list_for_each(ptr, &local->sta_list) {
+ sta = list_entry(ptr, struct sta_info, list);
+ if (!sta->proc_entry_added) {
+ atomic_inc(&sta->users);
+ break;
+ }
+ sta = NULL;
+ }
+ spin_unlock_bh(&local->sta_lock);
+
+ if (!sta)
+ break;
+
+ ieee80211_proc_init_sta(local, sta);
+ atomic_dec(&sta->users);
+
+ max_adds--;
+ }
+}
+
+
+void sta_info_init(struct ieee80211_local *local)
+{
+ spin_lock_init(&local->sta_lock);
+ INIT_LIST_HEAD(&local->sta_list);
+
+ init_timer(&local->sta_cleanup);
+ local->sta_cleanup.expires = jiffies + STA_INFO_CLEANUP_INTERVAL;
+ local->sta_cleanup.data = (unsigned long) local;
+ local->sta_cleanup.function = sta_info_cleanup;
+
+ INIT_WORK(&local->sta_proc_add, sta_info_proc_add_task, local);
+}
+
+void sta_info_start(struct ieee80211_local *local)
+{
+ add_timer(&local->sta_cleanup);
+}
+
+void sta_info_stop(struct ieee80211_local *local)
+{
+ struct list_head *ptr;
+
+ del_timer(&local->sta_cleanup);
+
+ ptr = local->sta_list.next;
+ while (ptr && ptr != &local->sta_list) {
+ struct sta_info *sta = (struct sta_info *) ptr;
+ ptr = ptr->next;
+ sta_info_free(local, sta, 0);
+ }
+}
+
+
+void sta_info_remove_aid_ptr(struct sta_info *sta)
+{
+ struct ieee80211_sub_if_data *sdata;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev);
+ if (sta->aid <= 0 || !sdata->bss)
+ return;
+
+ sdata->bss->sta_aid[sta->aid - 1] = NULL;
+ if (sta->aid == sdata->bss->max_aid) {
+ while (sdata->bss->max_aid > 0 &&
+ sdata->bss->sta_aid[sdata->bss->max_aid - 1] == NULL)
+ sdata->bss->max_aid--;
+ }
+}
+
+
+/**
+ * sta_info_flush - flush matching STA entries from the STA table
+ * @local: local interface data
+ * @dev: matching rule for the net device (sta->dev) or %NULL to match all STAs
+ */
+void sta_info_flush(struct ieee80211_local *local, struct net_device *dev)
+{
+ struct list_head *ptr, *n;
+
+ spin_lock_bh(&local->sta_lock);
+
+ list_for_each_safe(ptr, n, &local->sta_list) {
+ struct sta_info *sta = list_entry(ptr, struct sta_info, list);
+ if (dev == NULL || dev == sta->dev)
+ sta_info_free(local, sta, 1);
+ }
+ spin_unlock_bh(&local->sta_lock);
+}
--- /dev/null
+/*
+ * Copyright 2002-2005, Devicescape Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef STA_INFO_H
+#define STA_INFO_H
+
+/* Stations flags (struct sta_info::flags) */
+#define WLAN_STA_AUTH BIT(0)
+#define WLAN_STA_ASSOC BIT(1)
+#define WLAN_STA_PS BIT(2)
+#define WLAN_STA_TIM BIT(3) /* TIM bit is on for PS stations */
+#define WLAN_STA_PERM BIT(4) /* permanent; do not remove entry on expiration */
+#define WLAN_STA_AUTHORIZED BIT(5) /* If 802.1X is used, this flag is
+ * controlling whether STA is authorized to
+ * send and receive non-IEEE 802.1X frames
+ */
+#define WLAN_STA_SHORT_PREAMBLE BIT(7)
+#define WLAN_STA_WME BIT(9)
+#define WLAN_STA_XR BIT(26)
+#define WLAN_STA_WDS BIT(27)
+
+
+struct sta_info {
+ struct list_head list;
+ struct sta_info *hnext; /* next entry in hash table list */
+ atomic_t users; /* number of users (do not remove if > 0) */
+
+ u8 addr[ETH_ALEN];
+ u16 aid; /* STA's unique AID (1..2007), 0 = not yet assigned */
+ u32 flags; /* WLAN_STA_ */
+
+ struct sk_buff_head ps_tx_buf; /* buffer of TX frames for station in
+ * power saving state */
+ int pspoll; /* whether STA has send a PS Poll frame */
+ struct sk_buff_head tx_filtered; /* buffer of TX frames that were
+ * already given to low-level driver,
+ * but were filtered */
+ int clear_dst_mask;
+
+ unsigned long rx_packets, tx_packets; /* number of RX/TX MSDUs */
+ unsigned long rx_bytes, tx_bytes;
+ unsigned long tx_retry_failed, tx_retry_count;
+ unsigned long tx_filtered_count;
+
+ unsigned int wep_weak_iv_count; /* number of RX frames with weak IV */
+
+ unsigned long last_rx;
+ u32 supp_rates; /* bitmap of supported rates in local->curr_rates */
+ int txrate; /* index in local->curr_rates */
+ int last_txrate; /* last rate used to send a frame to this STA */
+ int last_nonerp_idx;
+
+ struct net_device *dev; /* which net device is this station associated
+ * to */
+
+ struct ieee80211_key *key;
+
+ u32 tx_num_consecutive_failures;
+ u32 tx_num_mpdu_ok;
+ u32 tx_num_mpdu_fail;
+
+ void *rate_ctrl_priv;
+
+ /* last received seq/frag number from this STA (per RX queue) */
+ u16 last_seq_ctrl[NUM_RX_DATA_QUEUES];
+ unsigned long num_duplicates; /* number of duplicate frames received
+ * from this STA */
+ unsigned long tx_fragments; /* number of transmitted MPDUs */
+ unsigned long rx_fragments; /* number of received MPDUs */
+ unsigned long rx_dropped; /* number of dropped MPDUs from this STA */
+
+ int last_rssi; /* RSSI of last received frame from this STA */
+ int last_ack_rssi[3]; /* RSSI of last received ACKs from this STA */
+ unsigned long last_ack;
+ int channel_use;
+ int channel_use_raw;
+
+ int antenna_sel;
+
+
+ int key_idx_compression; /* key table index for compression and TX
+ * filtering; used only if sta->key is not
+ * set */
+
+ int proc_entry_added:1;
+ int assoc_ap:1; /* whether this is an AP that we are associated with
+ * as a client */
+
+#ifdef CONFIG_HOSTAPD_WPA_TESTING
+ u32 wpa_trigger;
+#endif /* CONFIG_HOSTAPD_WPA_TESTING */
+
+#ifdef CONFIG_IEEE80211_DEBUG_COUNTERS
+ unsigned int wme_rx_queue[NUM_RX_DATA_QUEUES];
+ unsigned int wme_tx_queue[NUM_RX_DATA_QUEUES];
+#endif /* CONFIG_IEEE80211_DEBUG_COUNTERS */
+
+ int vlan_id;
+};
+
+
+/* Maximum number of concurrently registered stations */
+#define MAX_STA_COUNT 2007
+
+/* Maximum number of AIDs to use for STAs; must be 2007 or lower
+ * (IEEE 802.11 beacon format limitation) */
+#define MAX_AID_TABLE_SIZE 2007
+
+#define STA_HASH_SIZE 256
+#define STA_HASH(sta) (sta[5])
+
+
+/* Maximum number of frames to buffer per power saving station */
+#define STA_MAX_TX_BUFFER 128
+
+/* Buffered frame expiry time */
+#define STA_TX_BUFFER_EXPIRE (10 * HZ)
+
+/* How often station data is cleaned up (e.g., expiration of buffered frames)
+ */
+#define STA_INFO_CLEANUP_INTERVAL (10 * HZ)
+
+
+struct sta_info * sta_info_get(struct ieee80211_local *local, u8 *addr);
+int sta_info_min_txrate_get(struct ieee80211_local *local);
+void sta_info_release(struct ieee80211_local *local, struct sta_info *sta);
+struct sta_info * sta_info_add(struct ieee80211_local *local,
+ struct net_device *dev, u8 *addr);
+void sta_info_free(struct ieee80211_local *local, struct sta_info *sta,
+ int locked);
+void sta_info_init(struct ieee80211_local *local);
+void sta_info_start(struct ieee80211_local *local);
+void sta_info_stop(struct ieee80211_local *local);
+void sta_info_remove_aid_ptr(struct sta_info *sta);
+void sta_info_flush(struct ieee80211_local *local, struct net_device *dev);
+
+#endif /* STA_INFO_H */
--- /dev/null
+/*
+ * Copyright 2002-2004, Instant802 Networks, Inc.
+ * Copyright 2005, Devicescape Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifdef CONFIG_TKIP_DEBUG
+#include <linux/config.h>
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/skbuff.h>
+#endif /* CONFIG_TKIP_DEBUG */
+
+#include <linux/types.h>
+#include <linux/netdevice.h>
+
+#include <net/ieee80211.h>
+#include "ieee80211_key.h"
+#ifdef CONFIG_TKIP_DEBUG
+#include "ieee80211_i.h"
+#endif /* CONFIG_TKIP_DEBUG */
+#include "tkip.h"
+
+/* Dummy prototypes for structures used in wep.h, but not really needed for
+ * TKIP. */
+struct ieee80211_local;
+struct sk_buff;
+#include "wep.h"
+
+
+/* TKIP key mixing functions */
+
+
+#define PHASE1_LOOP_COUNT 8
+
+
+/* 2-byte by 2-byte subset of the full AES S-box table; second part of this
+ * table is identical to first part but byte-swapped */
+static const u16 tkip_sbox[256] =
+{
+ 0xC6A5, 0xF884, 0xEE99, 0xF68D, 0xFF0D, 0xD6BD, 0xDEB1, 0x9154,
+ 0x6050, 0x0203, 0xCEA9, 0x567D, 0xE719, 0xB562, 0x4DE6, 0xEC9A,
+ 0x8F45, 0x1F9D, 0x8940, 0xFA87, 0xEF15, 0xB2EB, 0x8EC9, 0xFB0B,
+ 0x41EC, 0xB367, 0x5FFD, 0x45EA, 0x23BF, 0x53F7, 0xE496, 0x9B5B,
+ 0x75C2, 0xE11C, 0x3DAE, 0x4C6A, 0x6C5A, 0x7E41, 0xF502, 0x834F,
+ 0x685C, 0x51F4, 0xD134, 0xF908, 0xE293, 0xAB73, 0x6253, 0x2A3F,
+ 0x080C, 0x9552, 0x4665, 0x9D5E, 0x3028, 0x37A1, 0x0A0F, 0x2FB5,
+ 0x0E09, 0x2436, 0x1B9B, 0xDF3D, 0xCD26, 0x4E69, 0x7FCD, 0xEA9F,
+ 0x121B, 0x1D9E, 0x5874, 0x342E, 0x362D, 0xDCB2, 0xB4EE, 0x5BFB,
+ 0xA4F6, 0x764D, 0xB761, 0x7DCE, 0x527B, 0xDD3E, 0x5E71, 0x1397,
+ 0xA6F5, 0xB968, 0x0000, 0xC12C, 0x4060, 0xE31F, 0x79C8, 0xB6ED,
+ 0xD4BE, 0x8D46, 0x67D9, 0x724B, 0x94DE, 0x98D4, 0xB0E8, 0x854A,
+ 0xBB6B, 0xC52A, 0x4FE5, 0xED16, 0x86C5, 0x9AD7, 0x6655, 0x1194,
+ 0x8ACF, 0xE910, 0x0406, 0xFE81, 0xA0F0, 0x7844, 0x25BA, 0x4BE3,
+ 0xA2F3, 0x5DFE, 0x80C0, 0x058A, 0x3FAD, 0x21BC, 0x7048, 0xF104,
+ 0x63DF, 0x77C1, 0xAF75, 0x4263, 0x2030, 0xE51A, 0xFD0E, 0xBF6D,
+ 0x814C, 0x1814, 0x2635, 0xC32F, 0xBEE1, 0x35A2, 0x88CC, 0x2E39,
+ 0x9357, 0x55F2, 0xFC82, 0x7A47, 0xC8AC, 0xBAE7, 0x322B, 0xE695,
+ 0xC0A0, 0x1998, 0x9ED1, 0xA37F, 0x4466, 0x547E, 0x3BAB, 0x0B83,
+ 0x8CCA, 0xC729, 0x6BD3, 0x283C, 0xA779, 0xBCE2, 0x161D, 0xAD76,
+ 0xDB3B, 0x6456, 0x744E, 0x141E, 0x92DB, 0x0C0A, 0x486C, 0xB8E4,
+ 0x9F5D, 0xBD6E, 0x43EF, 0xC4A6, 0x39A8, 0x31A4, 0xD337, 0xF28B,
+ 0xD532, 0x8B43, 0x6E59, 0xDAB7, 0x018C, 0xB164, 0x9CD2, 0x49E0,
+ 0xD8B4, 0xACFA, 0xF307, 0xCF25, 0xCAAF, 0xF48E, 0x47E9, 0x1018,
+ 0x6FD5, 0xF088, 0x4A6F, 0x5C72, 0x3824, 0x57F1, 0x73C7, 0x9751,
+ 0xCB23, 0xA17C, 0xE89C, 0x3E21, 0x96DD, 0x61DC, 0x0D86, 0x0F85,
+ 0xE090, 0x7C42, 0x71C4, 0xCCAA, 0x90D8, 0x0605, 0xF701, 0x1C12,
+ 0xC2A3, 0x6A5F, 0xAEF9, 0x69D0, 0x1791, 0x9958, 0x3A27, 0x27B9,
+ 0xD938, 0xEB13, 0x2BB3, 0x2233, 0xD2BB, 0xA970, 0x0789, 0x33A7,
+ 0x2DB6, 0x3C22, 0x1592, 0xC920, 0x8749, 0xAAFF, 0x5078, 0xA57A,
+ 0x038F, 0x59F8, 0x0980, 0x1A17, 0x65DA, 0xD731, 0x84C6, 0xD0B8,
+ 0x82C3, 0x29B0, 0x5A77, 0x1E11, 0x7BCB, 0xA8FC, 0x6DD6, 0x2C3A,
+};
+
+
+static inline u16 Mk16(u8 x, u8 y)
+{
+ return ((u16) x << 8) | (u16) y;
+}
+
+
+static inline u8 Hi8(u16 v)
+{
+ return v >> 8;
+}
+
+
+static inline u8 Lo8(u16 v)
+{
+ return v & 0xff;
+}
+
+
+static inline u16 Hi16(u32 v)
+{
+ return v >> 16;
+}
+
+
+static inline u16 Lo16(u32 v)
+{
+ return v & 0xffff;
+}
+
+
+static inline u16 RotR1(u16 v)
+{
+ return (v >> 1) | ((v & 0x0001) << 15);
+}
+
+
+static inline u16 tkip_S(u16 val)
+{
+ u16 a = tkip_sbox[Hi8(val)];
+
+ return tkip_sbox[Lo8(val)] ^ Hi8(a) ^ (Lo8(a) << 8);
+}
+
+
+
+/* P1K := Phase1(TA, TK, TSC)
+ * TA = transmitter address (48 bits)
+ * TK = dot11DefaultKeyValue or dot11KeyMappingValue (128 bits)
+ * TSC = TKIP sequence counter (48 bits, only 32 msb bits used)
+ * P1K: 80 bits
+ */
+static void tkip_mixing_phase1(const u8 *ta, const u8 *tk, u32 tsc_IV32,
+ u16 *p1k)
+{
+ int i, j;
+
+ p1k[0] = Lo16(tsc_IV32);
+ p1k[1] = Hi16(tsc_IV32);
+ p1k[2] = Mk16(ta[1], ta[0]);
+ p1k[3] = Mk16(ta[3], ta[2]);
+ p1k[4] = Mk16(ta[5], ta[4]);
+
+ for (i = 0; i < PHASE1_LOOP_COUNT; i++) {
+ j = 2 * (i & 1);
+ p1k[0] += tkip_S(p1k[4] ^ Mk16(tk[ 1 + j], tk[ 0 + j]));
+ p1k[1] += tkip_S(p1k[0] ^ Mk16(tk[ 5 + j], tk[ 4 + j]));
+ p1k[2] += tkip_S(p1k[1] ^ Mk16(tk[ 9 + j], tk[ 8 + j]));
+ p1k[3] += tkip_S(p1k[2] ^ Mk16(tk[13 + j], tk[12 + j]));
+ p1k[4] += tkip_S(p1k[3] ^ Mk16(tk[ 1 + j], tk[ 0 + j])) + i;
+ }
+}
+
+
+static void tkip_mixing_phase2(const u16 *p1k, const u8 *tk, u16 tsc_IV16,
+ u8 *rc4key)
+{
+ u16 ppk[6];
+ int i;
+
+ ppk[0] = p1k[0];
+ ppk[1] = p1k[1];
+ ppk[2] = p1k[2];
+ ppk[3] = p1k[3];
+ ppk[4] = p1k[4];
+ ppk[5] = p1k[4] + tsc_IV16;
+
+ ppk[0] += tkip_S(ppk[5] ^ Mk16(tk[ 1], tk[ 0]));
+ ppk[1] += tkip_S(ppk[0] ^ Mk16(tk[ 3], tk[ 2]));
+ ppk[2] += tkip_S(ppk[1] ^ Mk16(tk[ 5], tk[ 4]));
+ ppk[3] += tkip_S(ppk[2] ^ Mk16(tk[ 7], tk[ 6]));
+ ppk[4] += tkip_S(ppk[3] ^ Mk16(tk[ 9], tk[ 8]));
+ ppk[5] += tkip_S(ppk[4] ^ Mk16(tk[11], tk[10]));
+ ppk[0] += RotR1(ppk[5] ^ Mk16(tk[13], tk[12]));
+ ppk[1] += RotR1(ppk[0] ^ Mk16(tk[15], tk[14]));
+ ppk[2] += RotR1(ppk[1]);
+ ppk[3] += RotR1(ppk[2]);
+ ppk[4] += RotR1(ppk[3]);
+ ppk[5] += RotR1(ppk[4]);
+
+ rc4key[0] = Hi8(tsc_IV16);
+ rc4key[1] = (Hi8(tsc_IV16) | 0x20) & 0x7f;
+ rc4key[2] = Lo8(tsc_IV16);
+ rc4key[3] = Lo8((ppk[5] ^ Mk16(tk[1], tk[0])) >> 1);
+
+ for (i = 0; i < 6; i++) {
+ rc4key[4 + 2 * i] = Lo8(ppk[i]);
+ rc4key[5 + 2 * i] = Hi8(ppk[i]);
+ }
+}
+
+
+/* Add TKIP IV and Ext. IV at @pos. @iv0, @iv1, and @iv2 are the first octets
+ * of the IV. Returns pointer to the octet following IVs (i.e., beginning of
+ * the packet payload). */
+u8 * ieee80211_tkip_add_iv(u8 *pos, struct ieee80211_key *key,
+ u8 iv0, u8 iv1, u8 iv2)
+{
+ *pos++ = iv0;
+ *pos++ = iv1;
+ *pos++ = iv2;
+ *pos++ = (key->keyidx << 6) | (1 << 5) /* Ext IV */;
+ *pos++ = key->u.tkip.iv32 & 0xff;
+ *pos++ = (key->u.tkip.iv32 >> 8) & 0xff;
+ *pos++ = (key->u.tkip.iv32 >> 16) & 0xff;
+ *pos++ = (key->u.tkip.iv32 >> 24) & 0xff;
+ return pos;
+}
+
+
+/* Encrypt packet payload with TKIP using @key. @pos is a pointer to the
+ * beginning of the buffer containing payload. This payload must include
+ * headroom of eight octets for IV and Ext. IV and taildroom of four octets
+ * for ICV. @payload_len is the length of payload (_not_ including extra
+ * headroom and tailroom). @ta is the transmitter addresses. */
+void ieee80211_tkip_encrypt_data(struct ieee80211_key *key, u8 *pos,
+ size_t payload_len, u8 *ta)
+{
+ u8 rc4key[16];
+
+ /* Calculate per-packet key */
+ if (key->u.tkip.iv16 == 0 || !key->u.tkip.tx_initialized) {
+ /* IV16 wrapped around - perform TKIP phase 1 */
+ tkip_mixing_phase1(ta, &key->key[ALG_TKIP_TEMP_ENCR_KEY],
+ key->u.tkip.iv32, key->u.tkip.p1k);
+ key->u.tkip.tx_initialized = 1;
+ }
+
+ tkip_mixing_phase2(key->u.tkip.p1k, &key->key[ALG_TKIP_TEMP_ENCR_KEY],
+ key->u.tkip.iv16, rc4key);
+
+ pos = ieee80211_tkip_add_iv(pos, key, rc4key[0], rc4key[1], rc4key[2]);
+ ieee80211_wep_encrypt_data(rc4key, 16, pos, payload_len);
+}
+
+
+/* Decrypt packet payload with TKIP using @key. @pos is a pointer to the
+ * beginning of the buffer containing IEEE 802.11 header payload, i.e.,
+ * including IV, Ext. IV, real data, Michael MIC, ICV. @payload_len is the
+ * length of payload, including IV, Ext. IV, MIC, ICV. */
+int ieee80211_tkip_decrypt_data(struct ieee80211_key *key, u8 *payload,
+ size_t payload_len, u8 *ta, int only_iv,
+ int queue)
+{
+ u32 iv32;
+ u32 iv16;
+ u8 rc4key[16], keyid, *pos = payload;
+ int res;
+
+ if (payload_len < 12)
+ return -1;
+
+ iv16 = (pos[0] << 8) | pos[2];
+ keyid = pos[3];
+ iv32 = pos[4] | (pos[5] << 8) | (pos[6] << 16) | (pos[7] << 24);
+ pos += 8;
+#ifdef CONFIG_TKIP_DEBUG
+ {
+ int i;
+ printk(KERN_DEBUG "TKIP decrypt: data(len=%zd)", payload_len);
+ for (i = 0; i < payload_len; i++)
+ printk(" %02x", payload[i]);
+ printk("\n");
+ printk(KERN_DEBUG "TKIP decrypt: iv16=%04x iv32=%08x\n",
+ iv16, iv32);
+ }
+#endif /* CONFIG_TKIP_DEBUG */
+
+ if (!(keyid & (1 << 5)))
+ return TKIP_DECRYPT_NO_EXT_IV;
+
+ if ((keyid >> 6) != key->keyidx)
+ return TKIP_DECRYPT_INVALID_KEYIDX;
+
+ if (key->u.tkip.rx_initialized[queue] &&
+ (iv32 < key->u.tkip.iv32_rx[queue] ||
+ (iv32 == key->u.tkip.iv32_rx[queue] &&
+ iv16 <= key->u.tkip.iv16_rx[queue]))) {
+#ifdef CONFIG_TKIP_DEBUG
+ printk(KERN_DEBUG "TKIP replay detected for RX frame from "
+ MACSTR " (RX IV (%04x,%02x) <= prev. IV (%04x,%02x)\n",
+ MAC2STR(ta),
+ iv32, iv16, key->u.tkip.iv32_rx[queue],
+ key->u.tkip.iv16_rx[queue]);
+#endif /* CONFIG_TKIP_DEBUG */
+ return TKIP_DECRYPT_REPLAY;
+ }
+
+ if (only_iv) {
+ res = TKIP_DECRYPT_OK;
+ goto done;
+ }
+
+ if (!key->u.tkip.rx_initialized[queue] ||
+ key->u.tkip.iv32_rx[queue] != iv32) {
+ key->u.tkip.rx_initialized[queue] = 1;
+ /* IV16 wrapped around - perform TKIP phase 1 */
+ tkip_mixing_phase1(ta, &key->key[ALG_TKIP_TEMP_ENCR_KEY],
+ iv32, key->u.tkip.p1k_rx[queue]);
+#ifdef CONFIG_TKIP_DEBUG
+ {
+ int i;
+ printk(KERN_DEBUG "TKIP decrypt: Phase1 TA=" MACSTR
+ " TK=", MAC2STR(ta));
+ for (i = 0; i < 16; i++)
+ printk("%02x ",
+ key->key[ALG_TKIP_TEMP_ENCR_KEY + i]);
+ printk("\n");
+ printk(KERN_DEBUG "TKIP decrypt: P1K=");
+ for (i = 0; i < 5; i++)
+ printk("%04x ", key->u.tkip.p1k_rx[queue][i]);
+ printk("\n");
+ }
+#endif /* CONFIG_TKIP_DEBUG */
+ }
+
+ tkip_mixing_phase2(key->u.tkip.p1k_rx[queue],
+ &key->key[ALG_TKIP_TEMP_ENCR_KEY],
+ iv16, rc4key);
+#ifdef CONFIG_TKIP_DEBUG
+ {
+ int i;
+ printk(KERN_DEBUG "TKIP decrypt: Phase2 rc4key=");
+ for (i = 0; i < 16; i++)
+ printk("%02x ", rc4key[i]);
+ printk("\n");
+ }
+#endif /* CONFIG_TKIP_DEBUG */
+
+ res = ieee80211_wep_decrypt_data(rc4key, 16, pos, payload_len - 12);
+ done:
+ if (res == TKIP_DECRYPT_OK) {
+ /* FIX: these should be updated only after Michael MIC has been
+ * verified */
+ /* Record previously received IV */
+ key->u.tkip.iv32_rx[queue] = iv32;
+ key->u.tkip.iv16_rx[queue] = iv16;
+ }
+
+ return res;
+}
+
+
--- /dev/null
+/*
+ * Copyright 2002-2004, Instant802 Networks, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef TKIP_H
+#define TKIP_H
+
+u8 * ieee80211_tkip_add_iv(u8 *pos, struct ieee80211_key *key,
+ u8 iv0, u8 iv1, u8 iv2);
+void ieee80211_tkip_encrypt_data(struct ieee80211_key *key, u8 *pos,
+ size_t payload_len, u8 *ta);
+enum {
+ TKIP_DECRYPT_OK = 0,
+ TKIP_DECRYPT_NO_EXT_IV = -1,
+ TKIP_DECRYPT_INVALID_KEYIDX = -2,
+ TKIP_DECRYPT_REPLAY = -3,
+};
+int ieee80211_tkip_decrypt_data(struct ieee80211_key *key, u8 *payload,
+ size_t payload_len, u8 *ta, int only_iv,
+ int queue);
+
+#endif /* TKIP_H */
--- /dev/null
+/*
+ * Software WEP encryption implementation
+ * Copyright 2002, Jouni Malinen <jkmaline@cc.hut.fi>
+ * Copyright 2003, Instant802 Networks, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/config.h>
+#include <linux/version.h>
+#include <linux/netdevice.h>
+#include <linux/types.h>
+#include <linux/random.h>
+#include <linux/compiler.h>
+
+#include <net/ieee80211.h>
+#include "ieee80211_i.h"
+#include "wep.h"
+
+
+static const __u32 crc32_table[256] = {
+ 0x00000000L, 0x77073096L, 0xee0e612cL, 0x990951baL, 0x076dc419L,
+ 0x706af48fL, 0xe963a535L, 0x9e6495a3L, 0x0edb8832L, 0x79dcb8a4L,
+ 0xe0d5e91eL, 0x97d2d988L, 0x09b64c2bL, 0x7eb17cbdL, 0xe7b82d07L,
+ 0x90bf1d91L, 0x1db71064L, 0x6ab020f2L, 0xf3b97148L, 0x84be41deL,
+ 0x1adad47dL, 0x6ddde4ebL, 0xf4d4b551L, 0x83d385c7L, 0x136c9856L,
+ 0x646ba8c0L, 0xfd62f97aL, 0x8a65c9ecL, 0x14015c4fL, 0x63066cd9L,
+ 0xfa0f3d63L, 0x8d080df5L, 0x3b6e20c8L, 0x4c69105eL, 0xd56041e4L,
+ 0xa2677172L, 0x3c03e4d1L, 0x4b04d447L, 0xd20d85fdL, 0xa50ab56bL,
+ 0x35b5a8faL, 0x42b2986cL, 0xdbbbc9d6L, 0xacbcf940L, 0x32d86ce3L,
+ 0x45df5c75L, 0xdcd60dcfL, 0xabd13d59L, 0x26d930acL, 0x51de003aL,
+ 0xc8d75180L, 0xbfd06116L, 0x21b4f4b5L, 0x56b3c423L, 0xcfba9599L,
+ 0xb8bda50fL, 0x2802b89eL, 0x5f058808L, 0xc60cd9b2L, 0xb10be924L,
+ 0x2f6f7c87L, 0x58684c11L, 0xc1611dabL, 0xb6662d3dL, 0x76dc4190L,
+ 0x01db7106L, 0x98d220bcL, 0xefd5102aL, 0x71b18589L, 0x06b6b51fL,
+ 0x9fbfe4a5L, 0xe8b8d433L, 0x7807c9a2L, 0x0f00f934L, 0x9609a88eL,
+ 0xe10e9818L, 0x7f6a0dbbL, 0x086d3d2dL, 0x91646c97L, 0xe6635c01L,
+ 0x6b6b51f4L, 0x1c6c6162L, 0x856530d8L, 0xf262004eL, 0x6c0695edL,
+ 0x1b01a57bL, 0x8208f4c1L, 0xf50fc457L, 0x65b0d9c6L, 0x12b7e950L,
+ 0x8bbeb8eaL, 0xfcb9887cL, 0x62dd1ddfL, 0x15da2d49L, 0x8cd37cf3L,
+ 0xfbd44c65L, 0x4db26158L, 0x3ab551ceL, 0xa3bc0074L, 0xd4bb30e2L,
+ 0x4adfa541L, 0x3dd895d7L, 0xa4d1c46dL, 0xd3d6f4fbL, 0x4369e96aL,
+ 0x346ed9fcL, 0xad678846L, 0xda60b8d0L, 0x44042d73L, 0x33031de5L,
+ 0xaa0a4c5fL, 0xdd0d7cc9L, 0x5005713cL, 0x270241aaL, 0xbe0b1010L,
+ 0xc90c2086L, 0x5768b525L, 0x206f85b3L, 0xb966d409L, 0xce61e49fL,
+ 0x5edef90eL, 0x29d9c998L, 0xb0d09822L, 0xc7d7a8b4L, 0x59b33d17L,
+ 0x2eb40d81L, 0xb7bd5c3bL, 0xc0ba6cadL, 0xedb88320L, 0x9abfb3b6L,
+ 0x03b6e20cL, 0x74b1d29aL, 0xead54739L, 0x9dd277afL, 0x04db2615L,
+ 0x73dc1683L, 0xe3630b12L, 0x94643b84L, 0x0d6d6a3eL, 0x7a6a5aa8L,
+ 0xe40ecf0bL, 0x9309ff9dL, 0x0a00ae27L, 0x7d079eb1L, 0xf00f9344L,
+ 0x8708a3d2L, 0x1e01f268L, 0x6906c2feL, 0xf762575dL, 0x806567cbL,
+ 0x196c3671L, 0x6e6b06e7L, 0xfed41b76L, 0x89d32be0L, 0x10da7a5aL,
+ 0x67dd4accL, 0xf9b9df6fL, 0x8ebeeff9L, 0x17b7be43L, 0x60b08ed5L,
+ 0xd6d6a3e8L, 0xa1d1937eL, 0x38d8c2c4L, 0x4fdff252L, 0xd1bb67f1L,
+ 0xa6bc5767L, 0x3fb506ddL, 0x48b2364bL, 0xd80d2bdaL, 0xaf0a1b4cL,
+ 0x36034af6L, 0x41047a60L, 0xdf60efc3L, 0xa867df55L, 0x316e8eefL,
+ 0x4669be79L, 0xcb61b38cL, 0xbc66831aL, 0x256fd2a0L, 0x5268e236L,
+ 0xcc0c7795L, 0xbb0b4703L, 0x220216b9L, 0x5505262fL, 0xc5ba3bbeL,
+ 0xb2bd0b28L, 0x2bb45a92L, 0x5cb36a04L, 0xc2d7ffa7L, 0xb5d0cf31L,
+ 0x2cd99e8bL, 0x5bdeae1dL, 0x9b64c2b0L, 0xec63f226L, 0x756aa39cL,
+ 0x026d930aL, 0x9c0906a9L, 0xeb0e363fL, 0x72076785L, 0x05005713L,
+ 0x95bf4a82L, 0xe2b87a14L, 0x7bb12baeL, 0x0cb61b38L, 0x92d28e9bL,
+ 0xe5d5be0dL, 0x7cdcefb7L, 0x0bdbdf21L, 0x86d3d2d4L, 0xf1d4e242L,
+ 0x68ddb3f8L, 0x1fda836eL, 0x81be16cdL, 0xf6b9265bL, 0x6fb077e1L,
+ 0x18b74777L, 0x88085ae6L, 0xff0f6a70L, 0x66063bcaL, 0x11010b5cL,
+ 0x8f659effL, 0xf862ae69L, 0x616bffd3L, 0x166ccf45L, 0xa00ae278L,
+ 0xd70dd2eeL, 0x4e048354L, 0x3903b3c2L, 0xa7672661L, 0xd06016f7L,
+ 0x4969474dL, 0x3e6e77dbL, 0xaed16a4aL, 0xd9d65adcL, 0x40df0b66L,
+ 0x37d83bf0L, 0xa9bcae53L, 0xdebb9ec5L, 0x47b2cf7fL, 0x30b5ffe9L,
+ 0xbdbdf21cL, 0xcabac28aL, 0x53b39330L, 0x24b4a3a6L, 0xbad03605L,
+ 0xcdd70693L, 0x54de5729L, 0x23d967bfL, 0xb3667a2eL, 0xc4614ab8L,
+ 0x5d681b02L, 0x2a6f2b94L, 0xb40bbe37L, 0xc30c8ea1L, 0x5a05df1bL,
+ 0x2d02ef8dL
+};
+
+
+void ieee80211_wep_init(struct ieee80211_local *local)
+{
+ /* start WEP IV from a random value */
+ get_random_bytes(&local->wep_iv, WEP_IV_LEN);
+}
+
+
+static inline int ieee80211_wep_weak_iv(u32 iv, int keylen)
+{
+ /* Fluhrer, Mantin, and Shamir have reported weaknesses in the
+ * key scheduling algorithm of RC4. At least IVs (KeyByte + 3,
+ * 0xff, N) can be used to speedup attacks, so avoid using them. */
+ if ((iv & 0xff00) == 0xff00) {
+ u8 B = (iv >> 16) & 0xff;
+ if (B >= 3 && B < 3 + keylen)
+ return 1;
+ }
+ return 0;
+}
+
+
+void ieee80211_wep_get_iv(struct ieee80211_local *local,
+ struct ieee80211_key *key, u8 *iv)
+{
+ local->wep_iv++;
+ if (ieee80211_wep_weak_iv(local->wep_iv, key->keylen))
+ local->wep_iv += 0x0100;
+
+ if (iv == NULL)
+ return;
+
+ *iv++ = (local->wep_iv >> 16) & 0xff;
+ *iv++ = (local->wep_iv >> 8) & 0xff;
+ *iv++ = local->wep_iv & 0xff;
+ *iv++ = key->keyidx << 6;
+}
+
+
+u8 * ieee80211_wep_add_iv(struct ieee80211_local *local,
+ struct sk_buff *skb,
+ struct ieee80211_key *key)
+{
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ u16 fc;
+ int hdrlen;
+ u8 *newhdr;
+
+ fc = le16_to_cpu(hdr->frame_control);
+ fc |= WLAN_FC_ISWEP;
+ hdr->frame_control = cpu_to_le16(fc);
+
+ if ((skb_headroom(skb) < WEP_IV_LEN ||
+ skb_tailroom(skb) < WEP_ICV_LEN)) {
+ I802_DEBUG_INC(local->tx_expand_skb_head);
+ if (unlikely(pskb_expand_head(skb, WEP_IV_LEN, WEP_ICV_LEN,
+ GFP_ATOMIC)))
+ return NULL;
+ }
+
+ hdrlen = ieee80211_get_hdrlen(fc);
+ newhdr = skb_push(skb, WEP_IV_LEN);
+ memmove(newhdr, newhdr + WEP_IV_LEN, hdrlen);
+ ieee80211_wep_get_iv(local, key, newhdr + hdrlen);
+ return newhdr + hdrlen;
+}
+
+
+void ieee80211_wep_remove_iv(struct ieee80211_local *local,
+ struct sk_buff *skb,
+ struct ieee80211_key *key)
+{
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ u16 fc;
+ int hdrlen;
+
+ fc = le16_to_cpu(hdr->frame_control);
+ hdrlen = ieee80211_get_hdrlen(fc);
+ memmove(skb->data + WEP_IV_LEN, skb->data, hdrlen);
+ skb_pull(skb, WEP_IV_LEN);
+}
+
+
+/* Perform WEP encryption using given key. data buffer must have tailroom
+ * for 4-byte ICV. data_len must not include this ICV. Note: this function
+ * does _not_ add IV. data = RC4(data | CRC32(data)) */
+void ieee80211_wep_encrypt_data(u8 *rc4key, size_t klen, u8 *data,
+ size_t data_len)
+{
+ u32 i, j, k, crc;
+ u8 S[256];
+ u8 kpos, *pos;
+#define S_SWAP(a,b) do { u8 t = S[a]; S[a] = S[b]; S[b] = t; } while(0)
+
+ /* Setup RC4 state */
+ for (i = 0; i < 256; i++)
+ S[i] = i;
+ j = 0;
+ kpos = 0;
+ for (i = 0; i < 256; i++) {
+ j = (j + S[i] + rc4key[kpos]) & 0xff;
+ kpos++;
+ if (kpos >= klen)
+ kpos = 0;
+ S_SWAP(i, j);
+ }
+
+ /* Compute CRC32 over unencrypted data and apply RC4 to data */
+ pos = data;
+ crc = ~0;
+ i = j = 0;
+ for (k = 0; k < data_len; k++) {
+ crc = crc32_table[(crc ^ *pos) & 0xff] ^ (crc >> 8);
+ i = (i + 1) & 0xff;
+ j = (j + S[i]) & 0xff;
+ S_SWAP(i, j);
+ *pos++ ^= S[(S[i] + S[j]) & 0xff];
+ }
+ crc = ~crc;
+
+ /* Append little-endian CRC32 and encrypt it to produce ICV */
+ pos[0] = crc;
+ pos[1] = crc >> 8;
+ pos[2] = crc >> 16;
+ pos[3] = crc >> 24;
+ for (k = 0; k < 4; k++) {
+ i = (i + 1) & 0xff;
+ j = (j + S[i]) & 0xff;
+ S_SWAP(i, j);
+ *pos++ ^= S[(S[i] + S[j]) & 0xff];
+ }
+}
+
+
+/* Perform WEP encryption on given skb. 4 bytes of extra space (IV) in the
+ * beginning of the buffer 4 bytes of extra space (ICV) in the end of the
+ * buffer will be added. Both IV and ICV will be transmitted, so the
+ * payload length increases with 8 bytes.
+ *
+ * WEP frame payload: IV + TX key idx, RC4(data), ICV = RC4(CRC32(data))
+ */
+int ieee80211_wep_encrypt(struct ieee80211_local *local, struct sk_buff *skb,
+ struct ieee80211_key *key)
+{
+ u32 klen;
+ u8 *rc4key, *iv;
+ size_t len;
+
+ if (key == NULL || key->alg != ALG_WEP)
+ return -1;
+
+ klen = 3 + key->keylen;
+ rc4key = kmalloc(klen, GFP_ATOMIC);
+ if (rc4key == NULL)
+ return -1;
+
+ iv = ieee80211_wep_add_iv(local, skb, key);
+ if (iv == NULL) {
+ kfree(rc4key);
+ return -1;
+ }
+
+ len = skb->len - (iv + WEP_IV_LEN - skb->data);
+
+ /* Prepend 24-bit IV to RC4 key */
+ memcpy(rc4key, iv, 3);
+
+ /* Copy rest of the WEP key (the secret part) */
+ memcpy(rc4key + 3, key->key, key->keylen);
+
+ /* Add room for ICV */
+ skb_put(skb, WEP_ICV_LEN);
+
+ ieee80211_wep_encrypt_data(rc4key, klen, iv + WEP_IV_LEN, len);
+
+ kfree(rc4key);
+
+ return 0;
+}
+
+
+/* Perform WEP decryption using given key. data buffer includes encrypted
+ * payload, including 4-byte ICV, but _not_ IV. data_len must not include ICV.
+ * Return 0 on success and -1 on ICV mismatch. */
+int ieee80211_wep_decrypt_data(u8 *rc4key, size_t klen, u8 *data,
+ size_t data_len)
+{
+ u32 i, j, k, crc;
+ u8 S[256];
+ u8 kpos, *pos, crcbuf[WEP_ICV_LEN], *cpos;
+
+ /* Setup RC4 state */
+ for (i = 0; i < 256; i++)
+ S[i] = i;
+ j = 0;
+ kpos = 0;
+ for (i = 0; i < 256; i++) {
+ j = (j + S[i] + rc4key[kpos]) & 0xff;
+ kpos++;
+ if (kpos >= klen)
+ kpos = 0;
+ S_SWAP(i, j);
+ }
+
+ /* Apply RC4 to data and compute CRC32 over decrypted data */
+ pos = data;
+ crc = ~0;
+ i = j = 0;
+ for (k = 0; k < data_len; k++) {
+ i = (i + 1) & 0xff;
+ j = (j + S[i]) & 0xff;
+ S_SWAP(i, j);
+ *pos ^= S[(S[i] + S[j]) & 0xff];
+ crc = crc32_table[(crc ^ *pos++) & 0xff] ^ (crc >> 8);
+ }
+ crc = ~crc;
+
+ /* Decrypt little-endian CRC32 and verify that it matches with the
+ * received ICV */
+ cpos = crcbuf;
+ crcbuf[0] = crc;
+ crcbuf[1] = crc >> 8;
+ crcbuf[2] = crc >> 16;
+ crcbuf[3] = crc >> 24;
+ for (k = 0; k < WEP_ICV_LEN; k++) {
+ i = (i + 1) & 0xff;
+ j = (j + S[i]) & 0xff;
+ S_SWAP(i, j);
+ if (*cpos++ != (*pos++ ^ S[(S[i] + S[j]) & 0xff])) {
+ /* ICV mismatch */
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+
+/* Perform WEP decryption on given skb. Buffer includes whole WEP part of
+ * the frame: IV (4 bytes), encrypted payload (including SNAP header),
+ * ICV (4 bytes). skb->len includes both IV and ICV.
+ *
+ * Returns 0 if frame was decrypted successfully and ICV was correct and -1 on
+ * failure. If frame is OK, IV and ICV will be removed, i.e., decrypted payload
+ * is moved to the beginning of the skb and skb length will be reduced.
+ */
+int ieee80211_wep_decrypt(struct ieee80211_local *local, struct sk_buff *skb,
+ struct ieee80211_key *key)
+{
+ u32 klen;
+ u8 *rc4key;
+ u8 keyidx;
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ u16 fc;
+ int hdrlen;
+ size_t len;
+ int ret = 0;
+
+ fc = le16_to_cpu(hdr->frame_control);
+ if (!(fc & WLAN_FC_ISWEP))
+ return -1;
+
+ hdrlen = ieee80211_get_hdrlen(fc);
+
+ if (skb->len < 8 + hdrlen)
+ return -1;
+
+ len = skb->len - hdrlen - 8;
+
+ keyidx = skb->data[hdrlen + 3] >> 6;
+
+ if (key == NULL || keyidx != key->keyidx || key->alg != ALG_WEP)
+ return -1;
+
+ klen = 3 + key->keylen;
+
+ rc4key = kmalloc(klen, GFP_ATOMIC);
+ if (rc4key == NULL)
+ return -1;
+
+ /* Prepend 24-bit IV to RC4 key */
+ memcpy(rc4key, skb->data + hdrlen, 3);
+
+ /* Copy rest of the WEP key (the secret part) */
+ memcpy(rc4key + 3, key->key, key->keylen);
+
+ if (ieee80211_wep_decrypt_data(rc4key, klen,
+ skb->data + hdrlen + WEP_IV_LEN,
+ len)) {
+ printk(KERN_DEBUG "WEP decrypt failed (ICV)\n");
+ ret = -1;
+ }
+
+ kfree(rc4key);
+
+ /* Trim ICV */
+ skb_trim(skb, skb->len - WEP_ICV_LEN);
+
+ /* Remove IV */
+ memmove(skb->data + WEP_IV_LEN, skb->data, hdrlen);
+ skb_pull(skb, WEP_IV_LEN);
+
+ return ret;
+}
+
+
+int ieee80211_wep_get_keyidx(struct sk_buff *skb)
+{
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ u16 fc;
+ int hdrlen;
+
+ fc = le16_to_cpu(hdr->frame_control);
+ if (!(fc & WLAN_FC_ISWEP))
+ return -1;
+
+ hdrlen = ieee80211_get_hdrlen(fc);
+
+ if (skb->len < 8 + hdrlen)
+ return -1;
+
+ return skb->data[hdrlen + 3] >> 6;
+}
+
+
+u8 * ieee80211_wep_is_weak_iv(struct sk_buff *skb, struct ieee80211_key *key)
+{
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ u16 fc;
+ int hdrlen;
+ u8 *ivpos;
+ u32 iv;
+
+ fc = le16_to_cpu(hdr->frame_control);
+ if (!(fc & WLAN_FC_ISWEP))
+ return NULL;
+
+ hdrlen = ieee80211_get_hdrlen(fc);
+ ivpos = skb->data + hdrlen;
+ iv = (ivpos[0] << 16) | (ivpos[1] << 8) | ivpos[2];
+
+ if (ieee80211_wep_weak_iv(iv, key->keylen))
+ return ivpos;
+
+ return NULL;
+}
--- /dev/null
+/*
+ * Software WEP encryption implementation
+ * Copyright 2002, Jouni Malinen <jkmaline@cc.hut.fi>
+ * Copyright 2003, Instant802 Networks, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef WEP_H
+#define WEP_H
+
+void ieee80211_wep_init(struct ieee80211_local *local);
+void ieee80211_wep_get_iv(struct ieee80211_local *local,
+ struct ieee80211_key *key, u8 *iv);
+u8 * ieee80211_wep_add_iv(struct ieee80211_local *local,
+ struct sk_buff *skb,
+ struct ieee80211_key *key);
+void ieee80211_wep_remove_iv(struct ieee80211_local *local,
+ struct sk_buff *skb,
+ struct ieee80211_key *key);
+void ieee80211_wep_encrypt_data(u8 *rc4key, size_t klen, u8 *data,
+ size_t data_len);
+int ieee80211_wep_decrypt_data(u8 *rc4key, size_t klen, u8 *data,
+ size_t data_len);
+int ieee80211_wep_encrypt(struct ieee80211_local *local, struct sk_buff *skb,
+ struct ieee80211_key *key);
+int ieee80211_wep_decrypt(struct ieee80211_local *local, struct sk_buff *skb,
+ struct ieee80211_key *key);
+int ieee80211_wep_get_keyidx(struct sk_buff *skb);
+u8 * ieee80211_wep_is_weak_iv(struct sk_buff *skb, struct ieee80211_key *key);
+
+#endif /* WEP_H */
--- /dev/null
+/*
+ * Copyright 2004, Instant802 Networks, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/config.h>
+#include <linux/version.h>
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+#include <linux/module.h>
+#include <net/ip.h>
+
+#include <net/ieee80211.h>
+#include "ieee80211_i.h"
+#include "wme.h"
+
+#define CHILD_QDISC_OPS pfifo_qdisc_ops
+
+static inline int WLAN_FC_IS_QOS_DATA(u16 fc)
+{
+ return (fc & 0x8C) == 0x88;
+}
+
+
+ieee80211_txrx_result
+ieee80211_rx_h_parse_qos(struct ieee80211_txrx_data *rx)
+{
+ u8 *data = rx->skb->data;
+ int tid;
+
+ /* does the frame have a qos control field? */
+ if (WLAN_FC_IS_QOS_DATA(rx->fc)) {
+ u8 *qc = data + ieee80211_get_hdrlen(rx->fc) - QOS_CONTROL_LEN;
+ /* frame has qos control */
+ tid = qc[0] & QOS_CONTROL_TID_MASK;
+ } else {
+ if (unlikely(WLAN_FC_GET_TYPE(rx->fc) == WLAN_FC_TYPE_MGMT)) {
+ /* Separate TID for management frames */
+ tid = NUM_RX_DATA_QUEUES - 1;
+ } else {
+ /* no qos control present */
+ tid = 0; /* 802.1d - Best Effort */
+ }
+ }
+#ifdef CONFIG_IEEE80211_DEBUG_COUNTERS
+ I802_DEBUG_INC(rx->local->wme_rx_queue[tid]);
+ if (rx->sta) {
+ I802_DEBUG_INC(rx->sta->wme_rx_queue[tid]);
+ }
+#endif /* CONFIG_IEEE80211_DEBUG_COUNTERS */
+
+ rx->u.rx.queue = tid;
+ /* Set skb->priority to 1d tag if highest order bit of TID is not set.
+ * For now, set skb->priority to 0 for other cases. */
+ rx->skb->priority = (tid > 7) ? 0 : tid;
+
+ return TXRX_CONTINUE;
+}
+
+
+ieee80211_txrx_result
+ieee80211_rx_h_remove_qos_control(struct ieee80211_txrx_data *rx)
+{
+ u16 fc = rx->fc;
+ u8 *data = rx->skb->data;
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) data;
+
+ if (!WLAN_FC_IS_QOS_DATA(fc))
+ return TXRX_CONTINUE;
+
+ /* remove the qos control field, update frame type and meta-data */
+ memmove(data + 2, data, ieee80211_get_hdrlen(fc) - 2);
+ hdr = (struct ieee80211_hdr *) skb_pull(rx->skb, 2);
+ /* change frame type to non QOS */
+ rx->fc = fc &= ~(WLAN_FC_STYPE_QOS_DATA << 4);
+ hdr->frame_control = cpu_to_le16(fc);
+
+ return TXRX_CONTINUE;
+}
+
+
+/* maximum number of hardware queues we support. */
+#define TC_80211_MAX_QUEUES 8
+
+struct ieee80211_sched_data
+{
+ struct tcf_proto *filter_list;
+ struct Qdisc *queues[TC_80211_MAX_QUEUES];
+ struct sk_buff_head requeued[TC_80211_MAX_QUEUES];
+};
+
+
+/* given a data frame determine the 802.1p/1d tag to use */
+static inline unsigned classify_1d(struct sk_buff *skb, struct Qdisc *qd)
+{
+ struct iphdr *ip;
+ int dscp;
+ int offset;
+
+#ifdef CONFIG_NET_SCHED
+ struct ieee80211_sched_data *q = qdisc_priv(qd);
+ struct tcf_result res = { -1, 0 };
+
+ /* if there is a user set filter list, call out to that */
+ if (q->filter_list) {
+ tc_classify(skb, q->filter_list, &res);
+ if (res.class != -1)
+ return res.class;
+ }
+#endif /* CONFIG_NET_SCHED */
+
+ /* skb->priority values from 256->263 are magic values to
+ * directly indicate a specific 802.1d priority.
+ * This is used to allow 802.1d priority to be passed directly in
+ * from VLAN tags, etc. */
+ if (skb->priority >= 256 && skb->priority <= 263)
+ return skb->priority - 256;
+
+ /* check there is a valid IP header present */
+ offset = ieee80211_get_hdrlen_from_skb(skb) + 8 /* LLC + proto */;
+ if (skb->protocol != __constant_htons(ETH_P_IP) ||
+ skb->len < offset + sizeof(*ip))
+ return 0;
+
+ ip = (struct iphdr *) (skb->data + offset);
+
+ dscp = ip->tos & 0xfc;
+ switch (dscp) {
+ case 0x20:
+ return 2;
+ case 0x40:
+ return 1;
+ case 0x60:
+ return 3;
+ case 0x80:
+ return 4;
+ case 0xa0:
+ return 5;
+ case 0xc0:
+ return 6;
+ case 0xe0:
+ return 7;
+ default:
+ return 0;
+ }
+}
+
+
+
+
+static inline int wme_downgrade_ac(struct sk_buff *skb)
+{
+ switch (skb->priority) {
+ case 6:
+ case 7:
+ skb->priority = 5; /* VO -> VI */
+ return 0;
+ case 4:
+ case 5:
+ skb->priority = 3; /* VI -> BE */
+ return 0;
+ case 0:
+ case 3:
+ skb->priority = 2; /* BE -> BK */
+ return 0;
+ default:
+ return -1;
+ }
+}
+
+
+/* positive return value indicates which queue to use
+ * negative return value indicates to drop the frame */
+static inline int classify80211(struct sk_buff *skb, struct Qdisc *qd)
+{
+ struct ieee80211_local *local = qd->dev->priv;
+ struct ieee80211_tx_packet_data *pkt_data =
+ (struct ieee80211_tx_packet_data *) skb->cb;
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ unsigned short fc = le16_to_cpu(hdr->frame_control);
+ int qos;
+ const int ieee802_1d_to_ac[8] = { 2, 3, 3, 2, 1, 1, 0, 0 };
+
+ if (unlikely(pkt_data->magic != IEEE80211_CB_MAGIC))
+ return -1;
+
+ /* see if frame is data or non data frame */
+ if (unlikely(WLAN_FC_GET_TYPE(fc) != WLAN_FC_TYPE_DATA)) {
+ /* management frames go on AC_VO queue, but are sent
+ * without QoS control fields */
+ return IEEE80211_TX_QUEUE_DATA0;
+ }
+
+ if (unlikely(pkt_data->sdata->type == IEEE80211_SUB_IF_TYPE_MGMT)) {
+ /* Data frames from hostapd (mainly, EAPOL) use AC_VO
+ * and they will include QoS control fields if
+ * the target STA is using WME. */
+ skb->priority = 7;
+ return ieee802_1d_to_ac[skb->priority];
+ }
+
+
+ /* is this a QoS frame? */
+ qos = fc & (WLAN_FC_STYPE_QOS_DATA << 4);
+
+
+ if (!qos) {
+ skb->priority = 0; /* required for correct WPA/11i MIC */
+ return ieee802_1d_to_ac[skb->priority];
+ }
+
+ /* use the data classifier to determine what 802.1d tag the
+ * data frame has */
+ skb->priority = classify_1d(skb, qd);
+
+
+ /* incase we are a client verify acm is not set for this ac */
+ for (; unlikely(local->wmm_acm & BIT(skb->priority)); )
+ {
+ if (wme_downgrade_ac(skb)) {
+ /* No AC with lower priority has acm=0,
+ * drop packet. */
+ return -1;
+ }
+ }
+
+ /* look up which queue to use for frames with this 1d tag */
+ return ieee802_1d_to_ac[skb->priority];
+}
+
+
+static int wme_qdiscop_enqueue(struct sk_buff *skb, struct Qdisc* qd)
+{
+ struct ieee80211_local *local = qd->dev->priv;
+ struct ieee80211_sched_data *q = qdisc_priv(qd);
+ struct ieee80211_tx_packet_data *pkt_data =
+ (struct ieee80211_tx_packet_data *) skb->cb;
+ struct ieee80211_tx_control *control = &pkt_data->control;
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ unsigned short fc = le16_to_cpu(hdr->frame_control);
+ struct Qdisc *qdisc;
+ int err, queue;
+
+ if (control->requeue) {
+ skb_queue_tail(&q->requeued[control->queue], skb);
+ return 0;
+ }
+
+ queue = classify80211(skb, qd);
+
+ /* now we know the 1d priority, fill in the QoS header if there is one */
+ if (WLAN_FC_IS_QOS_DATA(fc)) {
+ struct qos_control *qc = (struct qos_control *) (skb->data + ieee80211_get_hdrlen(fc) - 2);
+ u8 *p = (u8 *) qc;
+ *p++ = 0; /* do this due to gcc's lack of optimization on bitfield ops */
+ *p = 0;
+ qc->tag1d = skb->priority;
+ if (local->wifi_wme_noack_test)
+ qc->ack_policy = 1;
+ }
+
+ if (unlikely(queue >= local->hw->queues)) {
+#if 0
+ if (net_ratelimit()) {
+ printk(KERN_DEBUG "%s - queue=%d (hw does not "
+ "support) -> %d\n",
+ __func__, queue, local->hw->queues - 1);
+ }
+#endif
+ queue = local->hw->queues - 1;
+ }
+
+ if (unlikely(queue < 0)) {
+ kfree_skb(skb);
+ err = NET_XMIT_DROP;
+ } else {
+ control->queue = (unsigned int) queue;
+ qdisc = q->queues[queue];
+ err = qdisc->enqueue(skb, qdisc);
+ if (err == NET_XMIT_SUCCESS) {
+ qd->q.qlen++;
+ qd->bstats.bytes += skb->len;
+ qd->bstats.packets++;
+ return NET_XMIT_SUCCESS;
+ }
+ }
+ qd->qstats.drops++;
+ return err;
+}
+
+
+/* TODO: clean up the cases where master_hard_start_xmit
+ * returns non 0 - it shouldn't ever do that. Once done we
+ * can remove this function */
+static int wme_qdiscop_requeue(struct sk_buff *skb, struct Qdisc* qd)
+{
+ struct ieee80211_sched_data *q = qdisc_priv(qd);
+ struct ieee80211_tx_packet_data *pkt_data =
+ (struct ieee80211_tx_packet_data *) skb->cb;
+ struct Qdisc *qdisc;
+ int err;
+
+ /* we recorded which queue to use earlier! */
+ qdisc = q->queues[pkt_data->control.queue];
+
+ if ((err = qdisc->ops->requeue(skb, qdisc)) == 0) {
+ qd->q.qlen++;
+ return 0;
+ }
+ qd->qstats.drops++;
+ return err;
+}
+
+
+static struct sk_buff *wme_qdiscop_dequeue(struct Qdisc* qd)
+{
+ struct ieee80211_sched_data *q = qdisc_priv(qd);
+ struct net_device *dev = qd->dev;
+ struct ieee80211_local *local = dev->priv;
+ struct ieee80211_hw *hw = local->hw;
+ struct ieee80211_tx_queue_stats stats;
+ struct sk_buff *skb;
+ struct Qdisc *qdisc;
+ int queue;
+
+ /* find which hardware queues have space in them */
+ hw->get_tx_stats(dev, &stats);
+
+ /* check all the h/w queues in numeric/priority order */
+ for (queue = 0; queue < hw->queues; queue++) {
+ /* see if there is room in this hardware queue */
+ if (stats.data[queue].len >= stats.data[queue].limit)
+ continue;
+
+ /* there is space - try and get a frame */
+ skb = skb_dequeue(&q->requeued[queue]);
+ if (skb)
+ return skb;
+
+ qdisc = q->queues[queue];
+ skb = qdisc->dequeue(qdisc);
+ if (skb) {
+ qd->q.qlen--;
+ return skb;
+ }
+ }
+ /* returning a NULL here when all the h/w queues are full means we
+ * never need to call netif_stop_queue in the driver */
+ return NULL;
+}
+
+
+static void wme_qdiscop_reset(struct Qdisc* qd)
+{
+ struct ieee80211_sched_data *q = qdisc_priv(qd);
+ struct ieee80211_local *local = qd->dev->priv;
+ struct ieee80211_hw *hw = local->hw;
+ int queue;
+
+ /* QUESTION: should we have some hardware flush functionality here? */
+
+ for (queue = 0; queue < hw->queues; queue++) {
+ skb_queue_purge(&q->requeued[queue]);
+ qdisc_reset(q->queues[queue]);
+ }
+ qd->q.qlen = 0;
+}
+
+
+static void wme_qdiscop_destroy(struct Qdisc* qd)
+{
+ struct ieee80211_sched_data *q = qdisc_priv(qd);
+ struct ieee80211_local *local = qd->dev->priv;
+ struct ieee80211_hw *hw = local->hw;
+ struct tcf_proto *tp;
+ int queue;
+
+ while ((tp = q->filter_list) != NULL) {
+ q->filter_list = tp->next;
+ tp->ops->destroy(tp);
+ }
+
+ for (queue=0; queue < hw->queues; queue++) {
+ skb_queue_purge(&q->requeued[queue]);
+ qdisc_destroy(q->queues[queue]);
+ q->queues[queue] = &noop_qdisc;
+ }
+}
+
+
+/* called whenever parameters are updated on existing qdisc */
+static int wme_qdiscop_tune(struct Qdisc *qd, struct rtattr *opt)
+{
+/* struct ieee80211_sched_data *q = qdisc_priv(qd);
+*/
+ /* check our options block is the right size */
+ /* copy any options to our local structure */
+/* Ignore options block for now - always use static mapping
+ struct tc_ieee80211_qopt *qopt = RTA_DATA(opt);
+
+ if (opt->rta_len < RTA_LENGTH(sizeof(*qopt)))
+ return -EINVAL;
+ memcpy(q->tag2queue, qopt->tag2queue, sizeof(qopt->tag2queue));
+*/
+ return 0;
+}
+
+
+/* called during initial creation of qdisc on device */
+static int wme_qdiscop_init(struct Qdisc *qd, struct rtattr *opt)
+{
+ struct ieee80211_sched_data *q = qdisc_priv(qd);
+ struct net_device *dev = qd->dev;
+ struct ieee80211_local *local = dev->priv;
+ int queues = local->hw->queues;
+ int err = 0, i;
+
+ /* check this device is an ieee80211 master type device */
+ if (dev->type != ARPHRD_IEEE80211)
+ return -EINVAL;
+
+ /* check that there is no qdisc currently attached to device
+ * this ensures that we will be the root qdisc. (I can't find a better
+ * way to test this explicitly) */
+ if (dev->qdisc_sleeping != &noop_qdisc)
+ return -EINVAL;
+
+ if (qd->flags & TCQ_F_INGRESS)
+ return -EINVAL;
+
+ /* if options were passed in, set them */
+ if (opt) {
+ err = wme_qdiscop_tune(qd, opt);
+ }
+
+ /* create child queues */
+ for (i = 0; i < queues; i++) {
+ skb_queue_head_init(&q->requeued[i]);
+ q->queues[i] = qdisc_create_dflt(qd->dev, &CHILD_QDISC_OPS);
+ if (q->queues[i] == 0) {
+ q->queues[i] = &noop_qdisc;
+ printk(KERN_ERR "%s child qdisc %i creation failed", dev->name, i);
+ }
+ }
+
+ return err;
+}
+
+static int wme_qdiscop_dump(struct Qdisc *qd, struct sk_buff *skb)
+{
+/* struct ieee80211_sched_data *q = qdisc_priv(qd);
+ unsigned char *p = skb->tail;
+ struct tc_ieee80211_qopt opt;
+
+ memcpy(&opt.tag2queue, q->tag2queue, TC_80211_MAX_TAG + 1);
+ RTA_PUT(skb, TCA_OPTIONS, sizeof(opt), &opt);
+*/ return skb->len;
+/*
+rtattr_failure:
+ skb_trim(skb, p - skb->data);*/
+ return -1;
+}
+
+
+static int wme_classop_graft(struct Qdisc *qd, unsigned long arg,
+ struct Qdisc *new, struct Qdisc **old)
+{
+ struct ieee80211_sched_data *q = qdisc_priv(qd);
+ struct ieee80211_local *local = qd->dev->priv;
+ struct ieee80211_hw *hw = local->hw;
+ unsigned long queue = arg - 1;
+
+ if (queue >= hw->queues)
+ return -EINVAL;
+
+ if (new == NULL)
+ new = &noop_qdisc;
+
+ sch_tree_lock(qd);
+ *old = q->queues[queue];
+ q->queues[queue] = new;
+ qdisc_reset(*old);
+ sch_tree_unlock(qd);
+
+ return 0;
+}
+
+
+static struct Qdisc *
+wme_classop_leaf(struct Qdisc *qd, unsigned long arg)
+{
+ struct ieee80211_sched_data *q = qdisc_priv(qd);
+ struct ieee80211_local *local = qd->dev->priv;
+ struct ieee80211_hw *hw = local->hw;
+ unsigned long queue = arg - 1;
+
+ if (queue >= hw->queues)
+ return NULL;
+
+ return q->queues[queue];
+}
+
+
+static unsigned long wme_classop_get(struct Qdisc *qd, u32 classid)
+{
+ struct ieee80211_local *local = qd->dev->priv;
+ struct ieee80211_hw *hw = local->hw;
+ unsigned long queue = TC_H_MIN(classid);
+
+ if (queue - 1 >= hw->queues)
+ return 0;
+
+ return queue;
+}
+
+
+static unsigned long wme_classop_bind(struct Qdisc *qd, unsigned long parent,
+ u32 classid)
+{
+ return wme_classop_get(qd, classid);
+}
+
+
+static void wme_classop_put(struct Qdisc *q, unsigned long cl)
+{
+ /* printk(KERN_DEBUG "entering %s\n", __func__); */
+}
+
+
+static int wme_classop_change(struct Qdisc *qd, u32 handle, u32 parent,
+ struct rtattr **tca, unsigned long *arg)
+{
+ unsigned long cl = *arg;
+ struct ieee80211_local *local = qd->dev->priv;
+ struct ieee80211_hw *hw = local->hw;
+ /* printk(KERN_DEBUG "entering %s\n", __func__); */
+
+ if (cl - 1 > hw->queues)
+ return -ENOENT;
+
+ /* TODO: put code to program hardware queue parameters here,
+ * to allow programming from tc command line */
+
+ return 0;
+}
+
+
+/* we don't support deleting hardware queues
+ * when we add WMM-SA support - TSPECs may be deleted here */
+static int wme_classop_delete(struct Qdisc *qd, unsigned long cl)
+{
+ struct ieee80211_local *local = qd->dev->priv;
+ struct ieee80211_hw *hw = local->hw;
+ /* printk(KERN_DEBUG "entering %s\n", __func__); */
+
+ if (cl - 1 > hw->queues)
+ return -ENOENT;
+ return 0;
+}
+
+
+static int wme_classop_dump_class(struct Qdisc *qd, unsigned long cl,
+ struct sk_buff *skb, struct tcmsg *tcm)
+{
+ struct ieee80211_sched_data *q = qdisc_priv(qd);
+ struct ieee80211_local *local = qd->dev->priv;
+ struct ieee80211_hw *hw = local->hw;
+ /* printk(KERN_DEBUG "entering %s\n", __func__); */
+
+ if (cl - 1 > hw->queues)
+ return -ENOENT;
+ tcm->tcm_handle = TC_H_MIN(cl);
+ tcm->tcm_parent = qd->handle;
+ tcm->tcm_info = q->queues[cl-1]->handle; /* do we need this? */
+ return 0;
+}
+
+
+static void wme_classop_walk(struct Qdisc *qd, struct qdisc_walker *arg)
+{
+ struct ieee80211_local *local = qd->dev->priv;
+ struct ieee80211_hw *hw = local->hw;
+ int queue;
+ /* printk(KERN_DEBUG "entering %s\n", __func__); */
+
+ if (arg->stop)
+ return;
+
+ for (queue = 0; queue < hw->queues; queue++) {
+ if (arg->count < arg->skip) {
+ arg->count++;
+ continue;
+ }
+ /* we should return classids for our internal queues here
+ * as well as the external ones */
+ if (arg->fn(qd, queue+1, arg) < 0) {
+ arg->stop = 1;
+ break;
+ }
+ arg->count++;
+ }
+}
+
+
+static struct tcf_proto ** wme_classop_find_tcf(struct Qdisc *qd,
+ unsigned long cl)
+{
+ struct ieee80211_sched_data *q = qdisc_priv(qd);
+ /* printk("entering %s\n", __func__); */
+
+ if (cl)
+ return NULL;
+
+ return &q->filter_list;
+}
+
+
+/* this qdisc is classful (i.e. has classes, some of which may have leaf qdiscs attached)
+ * - these are the operations on the classes */
+static struct Qdisc_class_ops class_ops =
+{
+ .graft = wme_classop_graft,
+ .leaf = wme_classop_leaf,
+
+ .get = wme_classop_get,
+ .put = wme_classop_put,
+ .change = wme_classop_change,
+ .delete = wme_classop_delete,
+ .walk = wme_classop_walk,
+
+ .tcf_chain = wme_classop_find_tcf,
+ .bind_tcf = wme_classop_bind,
+ .unbind_tcf = wme_classop_put,
+
+ .dump = wme_classop_dump_class,
+};
+
+
+/* queueing discipline operations */
+static struct Qdisc_ops wme_qdisc_ops =
+{
+ .next = NULL,
+ .cl_ops = &class_ops,
+ .id = "ieee80211",
+ .priv_size = sizeof(struct ieee80211_sched_data),
+
+ .enqueue = wme_qdiscop_enqueue,
+ .dequeue = wme_qdiscop_dequeue,
+ .requeue = wme_qdiscop_requeue,
+ .drop = NULL, /* drop not needed since we are always the root qdisc */
+
+ .init = wme_qdiscop_init,
+ .reset = wme_qdiscop_reset,
+ .destroy = wme_qdiscop_destroy,
+ .change = wme_qdiscop_tune,
+
+ .dump = wme_qdiscop_dump,
+};
+
+
+void ieee80211_install_qdisc(struct net_device *dev)
+{
+ struct Qdisc *qdisc;
+
+ qdisc = qdisc_create_dflt(dev, &wme_qdisc_ops);
+ if (qdisc == NULL) {
+ printk(KERN_ERR "%s: qdisc installation failed\n", dev->name);
+ return;
+ }
+
+ /* same handle as would be allocated by qdisc_alloc_handle() */
+ qdisc->handle = 0x80010000;
+
+ write_lock(&qdisc_tree_lock);
+ list_add_tail(&qdisc->list, &dev->qdisc_list);
+ dev->qdisc_sleeping = qdisc;
+ write_unlock(&qdisc_tree_lock);
+}
+
+
+int ieee80211_wme_register(void)
+{
+ int err = 0;
+
+#ifdef CONFIG_NET_SCHED
+ err = register_qdisc(&wme_qdisc_ops);
+#endif
+ return err;
+}
+
+
+void ieee80211_wme_unregister(void)
+{
+#ifdef CONFIG_NET_SCHED
+ unregister_qdisc(&wme_qdisc_ops);
+#endif
+}
--- /dev/null
+/*
+ * IEEE 802.11 driver (80211.o) - QoS datatypes
+ * Copyright 2004, Instant802 Networks, Inc.
+ * Copyright 2005, Devicescape Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <asm/byteorder.h>
+#include <net/pkt_sched.h>
+
+#define QOS_CONTROL_LEN 2
+
+#define QOS_CONTROL_ACK_POLICY_NORMAL 0
+#define QOS_CONTROL_ACK_POLICY_NOACK 1
+
+#define QOS_CONTROL_TID_MASK 0x0f
+#define QOS_CONTROL_ACK_POLICY_SHIFT 5
+
+/* This bit field structure should not be used; it can cause compiler to
+ * generate unaligned accesses and inefficient code. */
+struct qos_control {
+#if defined(__LITTLE_ENDIAN_BITFIELD)
+ u8 tag1d:3, /* bits 0-2 */
+ reserved1:1,
+ eosp:1,
+ ack_policy:2,
+ reserved2:1;
+#elif defined (__BIG_ENDIAN_BITFIELD)
+ u8 reserved2:1,
+ ack_policy:2,
+ eosp:1,
+ reserved1:1,
+ tag1d:3; /* bits 0-2 */
+#else
+#error "Please fix <asm/byteorder.h>"
+#endif
+ u8 reserved;
+} __attribute__ ((packed));
+
+ieee80211_txrx_result
+ieee80211_rx_h_parse_qos(struct ieee80211_txrx_data *rx);
+
+ieee80211_txrx_result
+ieee80211_rx_h_remove_qos_control(struct ieee80211_txrx_data *rx);
+
+void ieee80211_install_qdisc(struct net_device *dev);
+
+int ieee80211_wme_register(void);
+void ieee80211_wme_unregister(void);
+
--- /dev/null
+/*
+ * Copyright 2002-2004, Instant802 Networks, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/config.h>
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/skbuff.h>
+#include <linux/compiler.h>
+#include <linux/wireless.h>
+#include <net/iw_handler.h>
+
+#include <net/ieee80211.h>
+#include <net/ieee80211_common.h>
+#include "ieee80211_i.h"
+#include "michael.h"
+#include "tkip.h"
+#include "aes_ccm.h"
+#include "wpa.h"
+#ifdef CONFIG_HOSTAPD_WPA_TESTING
+#include "hostapd_ioctl.h"
+#endif /* CONFIG_HOSTAPD_WPA_TESTING */
+
+
+#define MICHAEL_MIC_HWACCEL
+
+
+int ieee80211_get_hdr_info(const struct sk_buff *skb, u8 **sa, u8 **da,
+ u8 *qos_tid, u8 **data, size_t *data_len)
+{
+ struct ieee80211_hdr *hdr;
+ size_t hdrlen;
+ u16 fc;
+ int a4_included;
+ u8 *pos;
+
+ hdr = (struct ieee80211_hdr *) skb->data;
+ fc = le16_to_cpu(hdr->frame_control);
+
+ hdrlen = 24;
+ if ((fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) ==
+ (WLAN_FC_FROMDS | WLAN_FC_TODS)) {
+ hdrlen += ETH_ALEN;
+ *sa = hdr->addr4;
+ *da = hdr->addr3;
+ } else if (fc & WLAN_FC_FROMDS) {
+ *sa = hdr->addr3;
+ *da = hdr->addr1;
+ } else if (fc & WLAN_FC_TODS) {
+ *sa = hdr->addr2;
+ *da = hdr->addr3;
+ } else {
+ *sa = hdr->addr2;
+ *da = hdr->addr1;
+ }
+
+ if (fc & 0x80)
+ hdrlen += 2;
+
+ *data = skb->data + hdrlen;
+ *data_len = skb->len - hdrlen;
+
+ a4_included = (fc & (WLAN_FC_TODS | WLAN_FC_FROMDS)) ==
+ (WLAN_FC_TODS | WLAN_FC_FROMDS);
+ if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_DATA &&
+ WLAN_FC_GET_STYPE(fc) & 0x08) {
+ pos = (u8 *) &hdr->addr4;
+ if (a4_included)
+ pos += 6;
+ *qos_tid = pos[0] & 0x0f;
+ *qos_tid |= 0x80; /* qos_included flag */
+ } else
+ *qos_tid = 0;
+
+ return skb->len < hdrlen ? -1 : 0;
+}
+
+
+ieee80211_txrx_result
+ieee80211_tx_h_michael_mic_add(struct ieee80211_txrx_data *tx)
+{
+ u8 *data, *sa, *da, *key, *mic, qos_tid;
+ size_t data_len;
+ u16 fc;
+ struct sk_buff *skb = tx->skb;
+ int authenticator;
+#if defined(CONFIG_HOSTAPD_WPA_TESTING) || defined(MICHAEL_MIC_HWACCEL)
+ int wpa_test = 0;
+#endif
+
+ fc = tx->fc;
+
+ if (!tx->key || tx->key->alg != ALG_TKIP || skb->len < 24 ||
+ !WLAN_FC_DATA_PRESENT(fc))
+ return TXRX_CONTINUE;
+
+ if (ieee80211_get_hdr_info(skb, &sa, &da, &qos_tid, &data, &data_len))
+ return TXRX_DROP;
+
+#ifdef CONFIG_HOSTAPD_WPA_TESTING
+ if ((tx->sta && tx->sta->wpa_trigger & WPA_TRIGGER_FAIL_TX_MIC) ||
+ (!tx->u.tx.unicast &&
+ tx->local->wpa_trigger & WPA_TRIGGER_FAIL_TX_MIC)) {
+ wpa_test = 1;
+ }
+#endif /* CONFIG_HOSTAPD_WPA_TESTING */
+
+#ifdef MICHAEL_MIC_HWACCEL
+ if (!tx->key->force_sw_encrypt && !tx->local->conf.sw_decrypt &&
+ !tx->fragmented && !wpa_test) {
+ /* hwaccel - with no need for preallocated room for Michael MIC
+ */
+ return TXRX_CONTINUE;
+ }
+#endif /* MICHAEL_MIC_HWACCEL */
+
+ if (skb_tailroom(skb) < MICHAEL_MIC_LEN) {
+ I802_DEBUG_INC(tx->local->tx_expand_skb_head);
+ if (unlikely(pskb_expand_head(skb, TKIP_IV_LEN,
+ MICHAEL_MIC_LEN + TKIP_ICV_LEN,
+ GFP_ATOMIC))) {
+ printk(KERN_DEBUG "%s: failed to allocate more memory "
+ "for Michael MIC\n", tx->dev->name);
+ return TXRX_DROP;
+ }
+ }
+
+#if 0
+ authenticator = fc & WLAN_FC_FROMDS; /* FIX */
+#else
+ authenticator = 1;
+#endif
+ key = &tx->key->key[authenticator ? ALG_TKIP_TEMP_AUTH_TX_MIC_KEY :
+ ALG_TKIP_TEMP_AUTH_RX_MIC_KEY];
+ mic = skb_put(skb, MICHAEL_MIC_LEN);
+ michael_mic(key, da, sa, qos_tid & 0x0f, data, data_len, mic);
+
+#ifdef CONFIG_HOSTAPD_WPA_TESTING
+ if (tx->sta && tx->sta->wpa_trigger & WPA_TRIGGER_FAIL_TX_MIC) {
+ printk(KERN_INFO "%s: WPA testing - corrupting TX Michael MIC "
+ "for STA " MACSTR "\n",
+ tx->dev->name, MAC2STR(tx->sta->addr));
+ tx->u.tx.control->key_idx = HW_KEY_IDX_INVALID;
+ tx->sta->wpa_trigger &= ~WPA_TRIGGER_FAIL_TX_MIC;
+ tx->wpa_test = 1;
+ mic[0]++;
+ } else if (!tx->u.tx.unicast &&
+ tx->local->wpa_trigger & WPA_TRIGGER_FAIL_TX_MIC) {
+ printk(KERN_INFO "%s: WPA testing - corrupting TX Michael MIC "
+ "for Group Key\n", tx->dev->name);
+ tx->u.tx.control->key_idx = HW_KEY_IDX_INVALID;
+ tx->local->wpa_trigger &= ~WPA_TRIGGER_FAIL_TX_MIC;
+ tx->wpa_test = 1;
+ mic[0]++;
+ }
+#endif /* CONFIG_HOSTAPD_WPA_TESTING */
+
+ return TXRX_CONTINUE;
+}
+
+
+ieee80211_txrx_result
+ieee80211_rx_h_michael_mic_verify(struct ieee80211_txrx_data *rx)
+{
+ u8 *data, *sa, *da, *key = NULL, qos_tid;
+ size_t data_len;
+ u16 fc;
+ u8 mic[MICHAEL_MIC_LEN];
+ struct sk_buff *skb = rx->skb;
+ int authenticator = 1, wpa_test = 0;
+
+ fc = rx->fc;
+
+ /* If device handles decryption totally, skip this check */
+ if (rx->local->hw->device_hides_wep ||
+ rx->local->hw->device_strips_mic)
+ return TXRX_CONTINUE;
+
+ if (!rx->key || rx->key->alg != ALG_TKIP ||
+ !(rx->fc & WLAN_FC_ISWEP) || !WLAN_FC_DATA_PRESENT(fc))
+ return TXRX_CONTINUE;
+
+#ifdef CONFIG_HOSTAPD_WPA_TESTING
+ if (rx->sta && rx->sta->wpa_trigger & WPA_TRIGGER_FAIL_RX_MIC) {
+ wpa_test = 1;
+ }
+#endif /* CONFIG_HOSTAPD_WPA_TESTING */
+
+#ifdef MICHAEL_MIC_HWACCEL
+ if ((rx->u.rx.status->flag & RX_FLAG_DECRYPTED) &&
+ !rx->key->force_sw_encrypt && !rx->local->conf.sw_decrypt) {
+ if (rx->local->hw->wep_include_iv) {
+ if (skb->len < MICHAEL_MIC_LEN)
+ return TXRX_DROP;
+ }
+ /* Need to verify Michael MIC sometimes in software even when
+ * hwaccel is used. Atheros ar5212: fragmented frames and QoS
+ * frames. */
+ if (!rx->fragmented && !wpa_test)
+ goto remove_mic;
+ }
+#endif /* MICHAEL_MIC_HWACCEL */
+
+ if (ieee80211_get_hdr_info(skb, &sa, &da, &qos_tid, &data, &data_len)
+ || data_len < MICHAEL_MIC_LEN)
+ return TXRX_DROP;
+
+ data_len -= MICHAEL_MIC_LEN;
+
+#if 0
+ authenticator = fc & WLAN_FC_TODS; /* FIX */
+#else
+ authenticator = 1;
+#endif
+ key = &rx->key->key[authenticator ? ALG_TKIP_TEMP_AUTH_RX_MIC_KEY :
+ ALG_TKIP_TEMP_AUTH_TX_MIC_KEY];
+ michael_mic(key, da, sa, qos_tid & 0x0f, data, data_len, mic);
+#ifdef CONFIG_HOSTAPD_WPA_TESTING
+ if (rx->sta && rx->sta->wpa_trigger & WPA_TRIGGER_FAIL_RX_MIC) {
+ printk(KERN_INFO "%s: WPA testing - corrupting RX Michael MIC "
+ "for STA " MACSTR "\n",
+ rx->dev->name, MAC2STR(rx->sta->addr));
+ rx->sta->wpa_trigger &= ~WPA_TRIGGER_FAIL_RX_MIC;
+ mic[0]++;
+ }
+#endif /* CONFIG_HOSTAPD_WPA_TESTING */
+ if (memcmp(mic, data + data_len, MICHAEL_MIC_LEN) != 0 || wpa_test) {
+#ifdef CONFIG_HOSTAPD_WPA_TESTING
+ int i;
+#endif /* CONFIG_HOSTAPD_WPA_TESTING */
+ printk(KERN_DEBUG "%s: invalid Michael MIC in data frame from "
+ MACSTR "\n", rx->dev->name, MAC2STR(sa));
+#ifdef CONFIG_HOSTAPD_WPA_TESTING
+ printk(KERN_DEBUG " received");
+ for (i = 0; i < MICHAEL_MIC_LEN; i++)
+ printk(" %02x", data[data_len + i]);
+ printk(" expected");
+ for (i = 0; i < MICHAEL_MIC_LEN; i++)
+ printk(" %02x", mic[i]);
+ printk("\n");
+ printk(KERN_DEBUG " SA=" MACSTR " DA=" MACSTR " key",
+ MAC2STR(sa), MAC2STR(da));
+ for (i = 0; i < 8; i++)
+ printk(" %02x", key[i]);
+ printk(" (%d)\n", authenticator);
+#endif /* CONFIG_HOSTAPD_WPA_TESTING */
+
+ do {
+ struct ieee80211_hdr *hdr;
+ union iwreq_data wrqu;
+ char *buf = kmalloc(128, GFP_ATOMIC);
+ if (buf == NULL)
+ break;
+
+ /* TODO: needed parameters: count, key type, TSC */
+ hdr = (struct ieee80211_hdr *) skb->data;
+ sprintf(buf, "MLME-MICHAELMICFAILURE.indication("
+ "keyid=%d %scast addr=" MACSTR ")",
+ rx->key->keyidx,
+ hdr->addr1[0] & 0x01 ? "broad" : "uni",
+ MAC2STR(hdr->addr2));
+ memset(&wrqu, 0, sizeof(wrqu));
+ wrqu.data.length = strlen(buf);
+ wireless_send_event(rx->dev, IWEVCUSTOM, &wrqu, buf);
+ kfree(buf);
+ } while (0);
+
+ ieee80211_rx_mgmt(rx->dev, rx->skb, rx->u.rx.status,
+ ieee80211_msg_michael_mic_failure);
+
+ return TXRX_QUEUED;
+ }
+
+#ifdef MICHAEL_MIC_HWACCEL
+ remove_mic:
+#endif /* MICHAEL_MIC_HWACCEL */
+ /* remove Michael MIC from payload */
+ skb_trim(skb, skb->len - MICHAEL_MIC_LEN);
+
+ return TXRX_CONTINUE;
+}
+
+
+static int tkip_encrypt_skb(struct ieee80211_txrx_data *tx,
+ struct sk_buff *skb, int test)
+{
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ struct ieee80211_key *key = tx->key;
+ int hdrlen, len, tailneed;
+ u16 fc;
+ u8 *pos;
+
+ fc = le16_to_cpu(hdr->frame_control);
+ hdrlen = ieee80211_get_hdrlen(fc);
+ len = skb->len - hdrlen;
+
+ tailneed = (!tx->key->force_sw_encrypt && !tx->local->conf.sw_decrypt)
+ ? 0 : TKIP_ICV_LEN;
+ if ((skb_headroom(skb) < TKIP_IV_LEN ||
+ skb_tailroom(skb) < tailneed)) {
+ I802_DEBUG_INC(tx->local->tx_expand_skb_head);
+ if (unlikely(pskb_expand_head(skb, TKIP_IV_LEN, tailneed,
+ GFP_ATOMIC)))
+ return -1;
+ }
+
+ pos = skb_push(skb, TKIP_IV_LEN);
+ memmove(pos, pos + TKIP_IV_LEN, hdrlen);
+ pos += hdrlen;
+
+#ifdef CONFIG_HOSTAPD_WPA_TESTING
+ if (test & WPA_TRIGGER_TX_REPLAY)
+ goto skip_iv_inc;
+iv_inc:
+#endif /* CONFIG_HOSTAPD_WPA_TESTING */
+
+ /* Increase IV for the frame */
+ key->u.tkip.iv16++;
+ if (key->u.tkip.iv16 == 0)
+ key->u.tkip.iv32++;
+
+#ifdef CONFIG_HOSTAPD_WPA_TESTING
+ if (test & WPA_TRIGGER_TX_SKIP_SEQ) {
+ test = 0;
+ goto iv_inc;
+ }
+skip_iv_inc:
+#endif /* CONFIG_HOSTAPD_WPA_TESTING */
+
+ if (!tx->key->force_sw_encrypt && !tx->local->conf.sw_decrypt
+#ifdef CONFIG_HOSTAPD_WPA_TESTING
+ && !tx->wpa_test
+#endif /* CONFIG_HOSTAPD_WPA_TESTING */
+ ) {
+ /* hwaccel - with preallocated room for IV */
+
+ ieee80211_tkip_add_iv(pos, key,
+ (u8) (key->u.tkip.iv16 >> 8),
+ (u8) (((key->u.tkip.iv16 >> 8) | 0x20) &
+ 0x7f),
+ (u8) key->u.tkip.iv16);
+
+ tx->u.tx.control->key_idx = tx->key->hw_key_idx;
+ return 0;
+ }
+
+ /* Add room for ICV */
+ skb_put(skb, TKIP_ICV_LEN);
+
+ hdr = (struct ieee80211_hdr *) skb->data;
+ ieee80211_tkip_encrypt_data(key, pos, len, hdr->addr2);
+ return 0;
+}
+
+
+ieee80211_txrx_result
+ieee80211_tx_h_tkip_encrypt(struct ieee80211_txrx_data *tx)
+{
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) tx->skb->data;
+ u16 fc;
+ struct ieee80211_key *key = tx->key;
+ struct sk_buff *skb = tx->skb;
+ int wpa_test = 0, test = 0;
+
+ fc = le16_to_cpu(hdr->frame_control);
+
+ if (!key || key->alg != ALG_TKIP || !WLAN_FC_DATA_PRESENT(fc))
+ return TXRX_CONTINUE;
+
+ tx->u.tx.control->icv_len = TKIP_ICV_LEN;
+ tx->u.tx.control->iv_len = TKIP_IV_LEN;
+ ieee80211_tx_set_iswep(tx);
+
+#ifdef CONFIG_HOSTAPD_WPA_TESTING
+ if ((tx->sta && tx->sta->wpa_trigger & WPA_TRIGGER_FAIL_TX_ICV) ||
+ (!tx->u.tx.unicast &&
+ tx->local->wpa_trigger & WPA_TRIGGER_FAIL_TX_ICV)) {
+ wpa_test = 1;
+ }
+
+ if (tx->sta) {
+ test = tx->sta->wpa_trigger;
+ tx->sta->wpa_trigger &=
+ ~(WPA_TRIGGER_TX_REPLAY | WPA_TRIGGER_TX_REPLAY_FRAG |
+ WPA_TRIGGER_TX_SKIP_SEQ);
+ } else {
+ test = tx->local->wpa_trigger;
+ tx->local->wpa_trigger &=
+ ~(WPA_TRIGGER_TX_REPLAY | WPA_TRIGGER_TX_REPLAY_FRAG |
+ WPA_TRIGGER_TX_SKIP_SEQ);
+ }
+ if (test &
+ (WPA_TRIGGER_TX_REPLAY | WPA_TRIGGER_TX_REPLAY_FRAG |
+ WPA_TRIGGER_TX_SKIP_SEQ)) {
+ printk(KERN_INFO "%s: WPA testing - TKIP TX packet number "
+ "%s%s%s%s\n", tx->dev->name,
+ tx->sta ? "[UNICAST]" : "[MULTICAST]",
+ test & WPA_TRIGGER_TX_REPLAY ? "[REPLAY]" : "",
+ test & WPA_TRIGGER_TX_REPLAY_FRAG ?
+ "[REPLAY FRAG]" : "",
+ test & WPA_TRIGGER_TX_SKIP_SEQ ? "[SKIP SEQ]" : "");
+ }
+#endif /* CONFIG_HOSTAPD_WPA_TESTING */
+
+ if (!tx->key->force_sw_encrypt && !tx->local->conf.sw_decrypt &&
+ !tx->local->hw->wep_include_iv && !wpa_test) {
+ /* hwaccel - with no need for preallocated room for IV/ICV */
+ tx->u.tx.control->key_idx = tx->key->hw_key_idx;
+ return TXRX_CONTINUE;
+ }
+
+ if (tkip_encrypt_skb(tx, skb, test) < 0)
+ return TXRX_DROP;
+
+ if (tx->u.tx.extra_frag) {
+ int i;
+#ifdef CONFIG_HOSTAPD_WPA_TESTING
+ if (test & WPA_TRIGGER_TX_REPLAY_FRAG)
+ test |= WPA_TRIGGER_TX_REPLAY;
+#endif /* CONFIG_HOSTAPD_WPA_TESTING */
+ for (i = 0; i < tx->u.tx.num_extra_frag; i++) {
+ if (tkip_encrypt_skb(tx, tx->u.tx.extra_frag[i], test)
+ < 0)
+ return TXRX_DROP;
+ }
+ }
+
+#ifdef CONFIG_HOSTAPD_WPA_TESTING
+ if (tx->sta && tx->sta->wpa_trigger & WPA_TRIGGER_FAIL_TX_ICV) {
+ printk(KERN_INFO "%s: WPA testing - corrupting TX TKIP ICV "
+ "for STA " MACSTR "\n",
+ tx->dev->name, MAC2STR(tx->sta->addr));
+ tx->u.tx.control->key_idx = HW_KEY_IDX_INVALID;
+ tx->sta->wpa_trigger &= ~WPA_TRIGGER_FAIL_TX_ICV;
+ skb->data[skb->len - 1]++;
+ } else if (!tx->u.tx.unicast &&
+ tx->local->wpa_trigger & WPA_TRIGGER_FAIL_TX_ICV) {
+ printk(KERN_INFO "%s: WPA testing - corrupting TX TKIP ICV "
+ "for Group Key\n",
+ tx->dev->name);
+ tx->u.tx.control->key_idx = HW_KEY_IDX_INVALID;
+ tx->local->wpa_trigger &= ~WPA_TRIGGER_FAIL_TX_ICV;
+ skb->data[skb->len - 1]++;
+ }
+#endif /* CONFIG_HOSTAPD_WPA_TESTING */
+
+ return TXRX_CONTINUE;
+}
+
+
+ieee80211_txrx_result
+ieee80211_rx_h_tkip_decrypt(struct ieee80211_txrx_data *rx)
+{
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) rx->skb->data;
+ u16 fc;
+ int hdrlen, res, hwaccel = 0, wpa_test = 0;
+ struct ieee80211_key *key = rx->key;
+ struct sk_buff *skb = rx->skb;
+
+ fc = le16_to_cpu(hdr->frame_control);
+ hdrlen = ieee80211_get_hdrlen(fc);
+
+ if (!rx->key || rx->key->alg != ALG_TKIP ||
+ !(rx->fc & WLAN_FC_ISWEP) ||
+ WLAN_FC_GET_TYPE(rx->fc) != WLAN_FC_TYPE_DATA)
+ return TXRX_CONTINUE;
+
+ if (!rx->sta || skb->len - hdrlen < 12)
+ return TXRX_DROP;
+
+#ifdef CONFIG_HOSTAPD_WPA_TESTING
+ if (rx->sta && rx->sta->wpa_trigger & WPA_TRIGGER_FAIL_RX_ICV) {
+ printk(KERN_INFO "%s: WPA testing - corrupting RX TKIP ICV "
+ "for STA " MACSTR "\n",
+ rx->dev->name, MAC2STR(rx->sta->addr));
+ rx->sta->wpa_trigger &= ~WPA_TRIGGER_FAIL_RX_ICV;
+ skb->data[skb->len - 1]++;
+ wpa_test = 1;
+ }
+#endif /* CONFIG_HOSTAPD_WPA_TESTING */
+
+ if ((rx->u.rx.status->flag & RX_FLAG_DECRYPTED) &&
+ !rx->key->force_sw_encrypt && !rx->local->conf.sw_decrypt) {
+ if (!rx->local->hw->wep_include_iv) {
+ /* Hardware takes care of all processing, including
+ * replay protection, so no need to continue here. */
+ return TXRX_CONTINUE;
+ }
+
+ /* let TKIP code verify IV, but skip decryption */
+ hwaccel = 1;
+ }
+
+ res = ieee80211_tkip_decrypt_data(key, skb->data + hdrlen,
+ skb->len - hdrlen, rx->sta->addr,
+ hwaccel, rx->u.rx.queue);
+ if (res != TKIP_DECRYPT_OK || wpa_test) {
+ printk(KERN_DEBUG "%s: TKIP decrypt failed for RX frame from "
+ MACSTR " (res=%d)\n",
+ rx->dev->name, MAC2STR(rx->sta->addr), res);
+ return TXRX_DROP;
+ }
+
+ /* Trim ICV */
+ skb_trim(skb, skb->len - TKIP_ICV_LEN);
+
+ /* Remove IV */
+ memmove(skb->data + TKIP_IV_LEN, skb->data, hdrlen);
+ skb_pull(skb, TKIP_IV_LEN);
+
+ return TXRX_CONTINUE;
+}
+
+
+static void ccmp_special_blocks(struct sk_buff *skb, u8 *pn, u8 *b_0, u8 *aad,
+ int encrypted)
+{
+ u16 fc;
+ int a4_included, qos_included;
+ u8 qos_tid, *fc_pos, *data, *sa, *da;
+ int len_a;
+ size_t data_len;
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+
+ fc_pos = (u8 *) &hdr->frame_control;
+ fc = fc_pos[0] ^ (fc_pos[1] << 8);
+ a4_included = (fc & (WLAN_FC_TODS | WLAN_FC_FROMDS)) ==
+ (WLAN_FC_TODS | WLAN_FC_FROMDS);
+
+ ieee80211_get_hdr_info(skb, &sa, &da, &qos_tid, &data, &data_len);
+ data_len -= CCMP_HDR_LEN + (encrypted ? CCMP_MIC_LEN : 0);
+ if (qos_tid & 0x80) {
+ qos_included = 1;
+ qos_tid &= 0x0f;
+ } else
+ qos_included = 0;
+ /* First block, b_0 */
+
+ b_0[0] = 0x59; /* flags: Adata: 1, M: 011, L: 001 */
+ /* Nonce: QoS Priority | A2 | PN */
+ b_0[1] = qos_tid;
+ memcpy(&b_0[2], hdr->addr2, 6);
+ memcpy(&b_0[8], pn, CCMP_PN_LEN);
+ /* l(m) */
+ b_0[14] = (data_len >> 8) & 0xff;
+ b_0[15] = data_len & 0xff;
+
+
+ /* AAD (extra authenticate-only data) / masked 802.11 header
+ * FC | A1 | A2 | A3 | SC | [A4] | [QC] */
+
+ len_a = a4_included ? 28 : 22;
+ if (qos_included)
+ len_a += 2;
+
+ aad[0] = 0; /* (len_a >> 8) & 0xff; */
+ aad[1] = len_a & 0xff;
+ /* Mask FC: zero subtype b4 b5 b6 */
+ aad[2] = fc_pos[0] & ~(BIT(4) | BIT(5) | BIT(6));
+ /* Retry, PwrMgt, MoreData; set Protected */
+ aad[3] = (fc_pos[1] & ~(BIT(3) | BIT(4) | BIT(5))) | BIT(6);
+ memcpy(&aad[4], &hdr->addr1, 18);
+
+ /* Mask Seq#, leave Frag# */
+ aad[22] = *((u8 *) &hdr->seq_ctrl) & 0x0f;
+ aad[23] = 0;
+ if (a4_included) {
+ memcpy(&aad[24], hdr->addr4, 6);
+ aad[30] = 0;
+ aad[31] = 0;
+ } else
+ memset(&aad[24], 0, 8);
+ if (qos_included) {
+ u8 *dpos = &aad[a4_included ? 30 : 24];
+
+ /* Mask QoS Control field */
+ dpos[0] = qos_tid;
+ dpos[1] = 0;
+ }
+}
+
+
+static inline void ccmp_pn2hdr(u8 *hdr, u8 *pn, int key_id)
+{
+ hdr[0] = pn[5];
+ hdr[1] = pn[4];
+ hdr[2] = 0;
+ hdr[3] = 0x20 | (key_id << 6);
+ hdr[4] = pn[3];
+ hdr[5] = pn[2];
+ hdr[6] = pn[1];
+ hdr[7] = pn[0];
+}
+
+
+static inline int ccmp_hdr2pn(u8 *pn, u8 *hdr)
+{
+ pn[0] = hdr[7];
+ pn[1] = hdr[6];
+ pn[2] = hdr[5];
+ pn[3] = hdr[4];
+ pn[4] = hdr[1];
+ pn[5] = hdr[0];
+ return (hdr[3] >> 6) & 0x03;
+}
+
+
+static int ccmp_encrypt_skb(struct ieee80211_txrx_data *tx,
+ struct sk_buff *skb, int test)
+{
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ struct ieee80211_key *key = tx->key;
+ int hdrlen, len, tailneed;
+ u16 fc;
+ u8 *pos, *pn;
+ u8 b_0[AES_BLOCK_LEN], aad[2 * AES_BLOCK_LEN];
+ int i;
+
+ fc = le16_to_cpu(hdr->frame_control);
+ hdrlen = ieee80211_get_hdrlen(fc);
+ len = skb->len - hdrlen;
+
+ tailneed = (!tx->key->force_sw_encrypt && !tx->local->conf.sw_decrypt)
+ ? 0 : CCMP_MIC_LEN;
+
+ if ((skb_headroom(skb) < CCMP_HDR_LEN ||
+ skb_tailroom(skb) < tailneed)) {
+ I802_DEBUG_INC(tx->local->tx_expand_skb_head);
+ if (unlikely(pskb_expand_head(skb, CCMP_HDR_LEN, tailneed,
+ GFP_ATOMIC)))
+ return -1;
+ }
+
+ pos = skb_push(skb, CCMP_HDR_LEN);
+ memmove(pos, pos + CCMP_HDR_LEN, hdrlen);
+ hdr = (struct ieee80211_hdr *) pos;
+ pos += hdrlen;
+
+ /* PN = PN + 1 */
+ pn = key->u.ccmp.tx_pn;
+
+#ifdef CONFIG_HOSTAPD_WPA_TESTING
+ if (test & WPA_TRIGGER_TX_REPLAY)
+ goto skip_pn_inc;
+pn_inc:
+#endif /* CONFIG_HOSTAPD_WPA_TESTING */
+
+ for (i = CCMP_PN_LEN - 1; i >= 0; i--) {
+ pn[i]++;
+ if (pn[i])
+ break;
+ }
+
+#ifdef CONFIG_HOSTAPD_WPA_TESTING
+ if (test & WPA_TRIGGER_TX_SKIP_SEQ) {
+ test = 0;
+ goto pn_inc;
+ }
+skip_pn_inc:
+#endif /* CONFIG_HOSTAPD_WPA_TESTING */
+
+ ccmp_pn2hdr(pos, pn, key->keyidx);
+
+ if (!tx->key->force_sw_encrypt && !tx->local->conf.sw_decrypt) {
+ /* hwaccel - with preallocated room for CCMP header */
+ tx->u.tx.control->key_idx = tx->key->hw_key_idx;
+ return 0;
+ }
+
+ pos += CCMP_HDR_LEN;
+ ccmp_special_blocks(skb, pn, b_0, aad, 0);
+ ieee80211_aes_ccm_encrypt(key->u.ccmp.aes_state, b_0, aad, pos, len,
+ pos, skb_put(skb, CCMP_MIC_LEN));
+
+ return 0;
+}
+
+
+ieee80211_txrx_result
+ieee80211_tx_h_ccmp_encrypt(struct ieee80211_txrx_data *tx)
+{
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) tx->skb->data;
+ struct ieee80211_key *key = tx->key;
+ u16 fc;
+ struct sk_buff *skb = tx->skb;
+ int test = 0;
+
+ fc = le16_to_cpu(hdr->frame_control);
+
+ if (!key || key->alg != ALG_CCMP || !WLAN_FC_DATA_PRESENT(fc))
+ return TXRX_CONTINUE;
+
+#ifdef CONFIG_HOSTAPD_WPA_TESTING
+ if (tx->sta) {
+ test = tx->sta->wpa_trigger;
+ tx->sta->wpa_trigger = 0;
+ } else {
+ test = tx->local->wpa_trigger;
+ tx->local->wpa_trigger = 0;
+ }
+ if (test &
+ (WPA_TRIGGER_TX_REPLAY | WPA_TRIGGER_TX_REPLAY_FRAG |
+ WPA_TRIGGER_TX_SKIP_SEQ)) {
+ printk(KERN_INFO "%s: WPA testing - CCMP TX packet number "
+ "%s%s%s%s\n", tx->dev->name,
+ tx->sta ? "[UNICAST]" : "[MULTICAST]",
+ test & WPA_TRIGGER_TX_REPLAY ? "[REPLAY]" : "",
+ test & WPA_TRIGGER_TX_REPLAY_FRAG ?
+ "[REPLAY FRAG]" : "",
+ test & WPA_TRIGGER_TX_SKIP_SEQ ? "[SKIP SEQ]" : "");
+ }
+#endif /* CONFIG_HOSTAPD_WPA_TESTING */
+
+ tx->u.tx.control->icv_len = CCMP_MIC_LEN;
+ tx->u.tx.control->iv_len = CCMP_HDR_LEN;
+ ieee80211_tx_set_iswep(tx);
+
+ if (!tx->key->force_sw_encrypt && !tx->local->conf.sw_decrypt &&
+ !tx->local->hw->wep_include_iv) {
+ /* hwaccel - with no need for preallocated room for CCMP "
+ * header or MIC fields */
+ tx->u.tx.control->key_idx = tx->key->hw_key_idx;
+ return TXRX_CONTINUE;
+ }
+
+ if (ccmp_encrypt_skb(tx, skb, test) < 0)
+ return TXRX_DROP;
+
+ if (tx->u.tx.extra_frag) {
+ int i;
+#ifdef CONFIG_HOSTAPD_WPA_TESTING
+ if (test & WPA_TRIGGER_TX_REPLAY_FRAG)
+ test |= WPA_TRIGGER_TX_REPLAY;
+#endif /* CONFIG_HOSTAPD_WPA_TESTING */
+ for (i = 0; i < tx->u.tx.num_extra_frag; i++) {
+ if (ccmp_encrypt_skb(tx, tx->u.tx.extra_frag[i], test)
+ < 0)
+ return TXRX_DROP;
+ }
+ }
+
+ return TXRX_CONTINUE;
+}
+
+
+ieee80211_txrx_result
+ieee80211_rx_h_ccmp_decrypt(struct ieee80211_txrx_data *rx)
+{
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) rx->skb->data;
+ u16 fc;
+ int hdrlen;
+ struct ieee80211_key *key = rx->key;
+ struct sk_buff *skb = rx->skb;
+ u8 b_0[AES_BLOCK_LEN], aad[2 * AES_BLOCK_LEN];
+ u8 pn[CCMP_PN_LEN];
+ int data_len;
+
+ fc = le16_to_cpu(hdr->frame_control);
+ hdrlen = ieee80211_get_hdrlen(fc);
+
+ if (!rx->key || rx->key->alg != ALG_CCMP ||
+ !(rx->fc & WLAN_FC_ISWEP) ||
+ WLAN_FC_GET_TYPE(rx->fc) != WLAN_FC_TYPE_DATA)
+ return TXRX_CONTINUE;
+
+ data_len = skb->len - hdrlen - CCMP_HDR_LEN - CCMP_MIC_LEN;
+ if (!rx->sta || data_len < 0)
+ return TXRX_DROP;
+
+ if ((rx->u.rx.status->flag & RX_FLAG_DECRYPTED) &&
+ !rx->key->force_sw_encrypt && !rx->local->conf.sw_decrypt &&
+ !rx->local->hw->wep_include_iv)
+ return TXRX_CONTINUE;
+
+ (void) ccmp_hdr2pn(pn, skb->data + hdrlen);
+
+ if (memcmp(pn, key->u.ccmp.rx_pn[rx->u.rx.queue], CCMP_PN_LEN) <= 0) {
+#ifdef CONFIG_IEEE80211_DEBUG
+ u8 *ppn = key->u.ccmp.rx_pn[rx->u.rx.queue];
+ printk(KERN_DEBUG "%s: CCMP replay detected for RX frame from "
+ MACSTR " (RX PN %02x%02x%02x%02x%02x%02x <= prev. PN "
+ "%02x%02x%02x%02x%02x%02x)\n", rx->dev->name,
+ MAC2STR(rx->sta->addr),
+ pn[0], pn[1], pn[2], pn[3], pn[4], pn[5],
+ ppn[0], ppn[1], ppn[2], ppn[3], ppn[4], ppn[5]);
+#endif /* CONFIG_IEEE80211_DEBUG */
+ key->u.ccmp.replays++;
+ return TXRX_DROP;
+ }
+
+ if ((rx->u.rx.status->flag & RX_FLAG_DECRYPTED) &&
+ !rx->key->force_sw_encrypt && !rx->local->conf.sw_decrypt) {
+ /* hwaccel has already decrypted frame and verified MIC */
+ } else {
+ ccmp_special_blocks(skb, pn, b_0, aad, 1);
+
+ if (ieee80211_aes_ccm_decrypt(
+ key->u.ccmp.aes_state, b_0, aad,
+ skb->data + hdrlen + CCMP_HDR_LEN, data_len,
+ skb->data + skb->len - CCMP_MIC_LEN,
+ skb->data + hdrlen + CCMP_HDR_LEN)) {
+ printk(KERN_DEBUG "%s: CCMP decrypt failed for RX "
+ "frame from " MACSTR "\n", rx->dev->name,
+ MAC2STR(rx->sta->addr));
+ return TXRX_DROP;
+ }
+ }
+
+ memcpy(key->u.ccmp.rx_pn[rx->u.rx.queue], pn, CCMP_PN_LEN);
+
+ /* Remove CCMP header and MIC */
+ skb_trim(skb, skb->len - CCMP_MIC_LEN);
+ memmove(skb->data + CCMP_HDR_LEN, skb->data, hdrlen);
+ skb_pull(skb, CCMP_HDR_LEN);
+
+ return TXRX_CONTINUE;
+}
+
--- /dev/null
+/*
+ * Copyright 2002-2004, Instant802 Networks, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef WPA_H
+#define WPA_H
+
+ieee80211_txrx_result
+ieee80211_tx_h_michael_mic_add(struct ieee80211_txrx_data *tx);
+ieee80211_txrx_result
+ieee80211_rx_h_michael_mic_verify(struct ieee80211_txrx_data *rx);
+
+ieee80211_txrx_result
+ieee80211_tx_h_tkip_encrypt(struct ieee80211_txrx_data *tx);
+ieee80211_txrx_result
+ieee80211_rx_h_tkip_decrypt(struct ieee80211_txrx_data *rx);
+
+ieee80211_txrx_result
+ieee80211_tx_h_ccmp_encrypt(struct ieee80211_txrx_data *tx);
+ieee80211_txrx_result
+ieee80211_rx_h_ccmp_decrypt(struct ieee80211_txrx_data *rx);
+
+int ieee80211_get_hdr_info(const struct sk_buff *skb, u8 **sa, u8 **da,
+ u8 *qos_tid, u8 **data, size_t *data_len);
+
+#endif /* WPA_H */
projects / lede.git / commitdiff