iwlagn: rename iwl-rx.c to iwl-agn-rx.c
authorWey-Yi Guy <wey-yi.w.guy@intel.com>
Mon, 10 Oct 2011 14:27:13 +0000 (07:27 -0700)
committerJohn W. Linville <linville@tuxdriver.com>
Fri, 14 Oct 2011 18:48:13 +0000 (14:48 -0400)
After driver split, there were no shared functions between agn and legacy;
rename iwl-rx.c to iwl-agn-rx.c

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
drivers/net/wireless/iwlwifi/Makefile
drivers/net/wireless/iwlwifi/iwl-agn-rx.c [new file with mode: 0644]
drivers/net/wireless/iwlwifi/iwl-rx.c [deleted file]

index 3dfb9df40895d812c886528d72aa27ef80276dd7..c73e5ed8db5e6994651358ac13f8da9b4d84f6d9 100644 (file)
@@ -3,10 +3,10 @@ obj-$(CONFIG_IWLWIFI) += iwlwifi.o
 iwlwifi-objs           := iwl-agn.o iwl-agn-rs.o
 iwlwifi-objs           += iwl-agn-ucode.o iwl-agn-tx.o
 iwlwifi-objs           += iwl-agn-lib.o iwl-agn-calib.o iwl-io.o
-iwlwifi-objs           += iwl-agn-tt.o iwl-agn-sta.o
+iwlwifi-objs           += iwl-agn-tt.o iwl-agn-sta.o iwl-agn-rx.o
 
 iwlwifi-objs           += iwl-core.o iwl-eeprom.o iwl-power.o
-iwlwifi-objs           += iwl-rx.o iwl-scan.o iwl-led.o
+iwlwifi-objs           += iwl-scan.o iwl-led.o
 iwlwifi-objs           += iwl-agn-rxon.o
 iwlwifi-objs           += iwl-5000.o
 iwlwifi-objs           += iwl-6000.o
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-rx.c b/drivers/net/wireless/iwlwifi/iwl-agn-rx.c
new file mode 100644 (file)
index 0000000..daa3c60
--- /dev/null
@@ -0,0 +1,1144 @@
+/******************************************************************************
+ *
+ * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved.
+ *
+ * Portions of this file are derived from the ipw3945 project, as well
+ * as portions of the ieee80211 subsystem header files.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
+ *
+ * The full GNU General Public License is included in this distribution in the
+ * file called LICENSE.
+ *
+ * Contact Information:
+ *  Intel Linux Wireless <ilw@linux.intel.com>
+ * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+ *
+ *****************************************************************************/
+
+#include <linux/etherdevice.h>
+#include <linux/slab.h>
+#include <linux/sched.h>
+#include <net/mac80211.h>
+#include <asm/unaligned.h>
+#include "iwl-eeprom.h"
+#include "iwl-dev.h"
+#include "iwl-core.h"
+#include "iwl-io.h"
+#include "iwl-helpers.h"
+#include "iwl-agn-calib.h"
+#include "iwl-agn.h"
+#include "iwl-shared.h"
+
+const char *get_cmd_string(u8 cmd)
+{
+       switch (cmd) {
+               IWL_CMD(REPLY_ALIVE);
+               IWL_CMD(REPLY_ERROR);
+               IWL_CMD(REPLY_ECHO);
+               IWL_CMD(REPLY_RXON);
+               IWL_CMD(REPLY_RXON_ASSOC);
+               IWL_CMD(REPLY_QOS_PARAM);
+               IWL_CMD(REPLY_RXON_TIMING);
+               IWL_CMD(REPLY_ADD_STA);
+               IWL_CMD(REPLY_REMOVE_STA);
+               IWL_CMD(REPLY_REMOVE_ALL_STA);
+               IWL_CMD(REPLY_TXFIFO_FLUSH);
+               IWL_CMD(REPLY_WEPKEY);
+               IWL_CMD(REPLY_TX);
+               IWL_CMD(REPLY_LEDS_CMD);
+               IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
+               IWL_CMD(COEX_PRIORITY_TABLE_CMD);
+               IWL_CMD(COEX_MEDIUM_NOTIFICATION);
+               IWL_CMD(COEX_EVENT_CMD);
+               IWL_CMD(REPLY_QUIET_CMD);
+               IWL_CMD(REPLY_CHANNEL_SWITCH);
+               IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
+               IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
+               IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
+               IWL_CMD(POWER_TABLE_CMD);
+               IWL_CMD(PM_SLEEP_NOTIFICATION);
+               IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
+               IWL_CMD(REPLY_SCAN_CMD);
+               IWL_CMD(REPLY_SCAN_ABORT_CMD);
+               IWL_CMD(SCAN_START_NOTIFICATION);
+               IWL_CMD(SCAN_RESULTS_NOTIFICATION);
+               IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
+               IWL_CMD(BEACON_NOTIFICATION);
+               IWL_CMD(REPLY_TX_BEACON);
+               IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
+               IWL_CMD(QUIET_NOTIFICATION);
+               IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
+               IWL_CMD(MEASURE_ABORT_NOTIFICATION);
+               IWL_CMD(REPLY_BT_CONFIG);
+               IWL_CMD(REPLY_STATISTICS_CMD);
+               IWL_CMD(STATISTICS_NOTIFICATION);
+               IWL_CMD(REPLY_CARD_STATE_CMD);
+               IWL_CMD(CARD_STATE_NOTIFICATION);
+               IWL_CMD(MISSED_BEACONS_NOTIFICATION);
+               IWL_CMD(REPLY_CT_KILL_CONFIG_CMD);
+               IWL_CMD(SENSITIVITY_CMD);
+               IWL_CMD(REPLY_PHY_CALIBRATION_CMD);
+               IWL_CMD(REPLY_RX_PHY_CMD);
+               IWL_CMD(REPLY_RX_MPDU_CMD);
+               IWL_CMD(REPLY_RX);
+               IWL_CMD(REPLY_COMPRESSED_BA);
+               IWL_CMD(CALIBRATION_CFG_CMD);
+               IWL_CMD(CALIBRATION_RES_NOTIFICATION);
+               IWL_CMD(CALIBRATION_COMPLETE_NOTIFICATION);
+               IWL_CMD(REPLY_TX_POWER_DBM_CMD);
+               IWL_CMD(TEMPERATURE_NOTIFICATION);
+               IWL_CMD(TX_ANT_CONFIGURATION_CMD);
+               IWL_CMD(REPLY_BT_COEX_PROFILE_NOTIF);
+               IWL_CMD(REPLY_BT_COEX_PRIO_TABLE);
+               IWL_CMD(REPLY_BT_COEX_PROT_ENV);
+               IWL_CMD(REPLY_WIPAN_PARAMS);
+               IWL_CMD(REPLY_WIPAN_RXON);
+               IWL_CMD(REPLY_WIPAN_RXON_TIMING);
+               IWL_CMD(REPLY_WIPAN_RXON_ASSOC);
+               IWL_CMD(REPLY_WIPAN_QOS_PARAM);
+               IWL_CMD(REPLY_WIPAN_WEPKEY);
+               IWL_CMD(REPLY_WIPAN_P2P_CHANNEL_SWITCH);
+               IWL_CMD(REPLY_WIPAN_NOA_NOTIFICATION);
+               IWL_CMD(REPLY_WIPAN_DEACTIVATION_COMPLETE);
+               IWL_CMD(REPLY_WOWLAN_PATTERNS);
+               IWL_CMD(REPLY_WOWLAN_WAKEUP_FILTER);
+               IWL_CMD(REPLY_WOWLAN_TSC_RSC_PARAMS);
+               IWL_CMD(REPLY_WOWLAN_TKIP_PARAMS);
+               IWL_CMD(REPLY_WOWLAN_KEK_KCK_MATERIAL);
+               IWL_CMD(REPLY_WOWLAN_GET_STATUS);
+       default:
+               return "UNKNOWN";
+
+       }
+}
+
+/******************************************************************************
+ *
+ * Generic RX handler implementations
+ *
+ ******************************************************************************/
+
+static int iwlagn_rx_reply_error(struct iwl_priv *priv,
+                              struct iwl_rx_mem_buffer *rxb,
+                              struct iwl_device_cmd *cmd)
+{
+       struct iwl_rx_packet *pkt = rxb_addr(rxb);
+
+       IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
+               "seq 0x%04X ser 0x%08X\n",
+               le32_to_cpu(pkt->u.err_resp.error_type),
+               get_cmd_string(pkt->u.err_resp.cmd_id),
+               pkt->u.err_resp.cmd_id,
+               le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
+               le32_to_cpu(pkt->u.err_resp.error_info));
+       return 0;
+}
+
+static int iwlagn_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb,
+                              struct iwl_device_cmd *cmd)
+{
+       struct iwl_rx_packet *pkt = rxb_addr(rxb);
+       struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
+       /*
+        * MULTI-FIXME
+        * See iwlagn_mac_channel_switch.
+        */
+       struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
+       struct iwl_rxon_cmd *rxon = (void *)&ctx->active;
+
+       if (!test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status))
+               return 0;
+
+       if (!le32_to_cpu(csa->status) && csa->channel == priv->switch_channel) {
+               rxon->channel = csa->channel;
+               ctx->staging.channel = csa->channel;
+               IWL_DEBUG_11H(priv, "CSA notif: channel %d\n",
+                             le16_to_cpu(csa->channel));
+               iwl_chswitch_done(priv, true);
+       } else {
+               IWL_ERR(priv, "CSA notif (fail) : channel %d\n",
+                       le16_to_cpu(csa->channel));
+               iwl_chswitch_done(priv, false);
+       }
+       return 0;
+}
+
+
+static int iwlagn_rx_spectrum_measure_notif(struct iwl_priv *priv,
+                                         struct iwl_rx_mem_buffer *rxb,
+                                         struct iwl_device_cmd *cmd)
+{
+       struct iwl_rx_packet *pkt = rxb_addr(rxb);
+       struct iwl_spectrum_notification *report = &(pkt->u.spectrum_notif);
+
+       if (!report->state) {
+               IWL_DEBUG_11H(priv,
+                       "Spectrum Measure Notification: Start\n");
+               return 0;
+       }
+
+       memcpy(&priv->measure_report, report, sizeof(*report));
+       priv->measurement_status |= MEASUREMENT_READY;
+       return 0;
+}
+
+static int iwlagn_rx_pm_sleep_notif(struct iwl_priv *priv,
+                                 struct iwl_rx_mem_buffer *rxb,
+                                 struct iwl_device_cmd *cmd)
+{
+#ifdef CONFIG_IWLWIFI_DEBUG
+       struct iwl_rx_packet *pkt = rxb_addr(rxb);
+       struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
+       IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n",
+                    sleep->pm_sleep_mode, sleep->pm_wakeup_src);
+#endif
+       return 0;
+}
+
+static int iwlagn_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
+                                            struct iwl_rx_mem_buffer *rxb,
+                                            struct iwl_device_cmd *cmd)
+{
+       struct iwl_rx_packet *pkt = rxb_addr(rxb);
+       u32 __maybe_unused len =
+               le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
+       IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled "
+                       "notification for %s:\n", len,
+                       get_cmd_string(pkt->hdr.cmd));
+       iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, len);
+       return 0;
+}
+
+static int iwlagn_rx_beacon_notif(struct iwl_priv *priv,
+                               struct iwl_rx_mem_buffer *rxb,
+                               struct iwl_device_cmd *cmd)
+{
+       struct iwl_rx_packet *pkt = rxb_addr(rxb);
+       struct iwlagn_beacon_notif *beacon = (void *)pkt->u.raw;
+#ifdef CONFIG_IWLWIFI_DEBUG
+       u16 status = le16_to_cpu(beacon->beacon_notify_hdr.status.status);
+       u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
+
+       IWL_DEBUG_RX(priv, "beacon status %#x, retries:%d ibssmgr:%d "
+               "tsf:0x%.8x%.8x rate:%d\n",
+               status & TX_STATUS_MSK,
+               beacon->beacon_notify_hdr.failure_frame,
+               le32_to_cpu(beacon->ibss_mgr_status),
+               le32_to_cpu(beacon->high_tsf),
+               le32_to_cpu(beacon->low_tsf), rate);
+#endif
+
+       priv->ibss_manager = le32_to_cpu(beacon->ibss_mgr_status);
+
+       return 0;
+}
+
+/* the threshold ratio of actual_ack_cnt to expected_ack_cnt in percent */
+#define ACK_CNT_RATIO (50)
+#define BA_TIMEOUT_CNT (5)
+#define BA_TIMEOUT_MAX (16)
+
+/**
+ * iwl_good_ack_health - checks for ACK count ratios, BA timeout retries.
+ *
+ * When the ACK count ratio is low and aggregated BA timeout retries exceeding
+ * the BA_TIMEOUT_MAX, reload firmware and bring system back to normal
+ * operation state.
+ */
+static bool iwlagn_good_ack_health(struct iwl_priv *priv,
+                               struct statistics_tx *cur)
+{
+       int actual_delta, expected_delta, ba_timeout_delta;
+       struct statistics_tx *old;
+
+       if (priv->agg_tids_count)
+               return true;
+
+       old = &priv->statistics.tx;
+
+       actual_delta = le32_to_cpu(cur->actual_ack_cnt) -
+                      le32_to_cpu(old->actual_ack_cnt);
+       expected_delta = le32_to_cpu(cur->expected_ack_cnt) -
+                        le32_to_cpu(old->expected_ack_cnt);
+
+       /* Values should not be negative, but we do not trust the firmware */
+       if (actual_delta <= 0 || expected_delta <= 0)
+               return true;
+
+       ba_timeout_delta = le32_to_cpu(cur->agg.ba_timeout) -
+                          le32_to_cpu(old->agg.ba_timeout);
+
+       if ((actual_delta * 100 / expected_delta) < ACK_CNT_RATIO &&
+           ba_timeout_delta > BA_TIMEOUT_CNT) {
+               IWL_DEBUG_RADIO(priv,
+                       "deltas: actual %d expected %d ba_timeout %d\n",
+                       actual_delta, expected_delta, ba_timeout_delta);
+
+#ifdef CONFIG_IWLWIFI_DEBUGFS
+               /*
+                * This is ifdef'ed on DEBUGFS because otherwise the
+                * statistics aren't available. If DEBUGFS is set but
+                * DEBUG is not, these will just compile out.
+                */
+               IWL_DEBUG_RADIO(priv, "rx_detected_cnt delta %d\n",
+                               priv->delta_stats.tx.rx_detected_cnt);
+               IWL_DEBUG_RADIO(priv,
+                               "ack_or_ba_timeout_collision delta %d\n",
+                               priv->delta_stats.tx.ack_or_ba_timeout_collision);
+#endif
+
+               if (ba_timeout_delta >= BA_TIMEOUT_MAX)
+                       return false;
+       }
+
+       return true;
+}
+
+/**
+ * iwl_good_plcp_health - checks for plcp error.
+ *
+ * When the plcp error is exceeding the thresholds, reset the radio
+ * to improve the throughput.
+ */
+static bool iwlagn_good_plcp_health(struct iwl_priv *priv,
+                                struct statistics_rx_phy *cur_ofdm,
+                                struct statistics_rx_ht_phy *cur_ofdm_ht,
+                                unsigned int msecs)
+{
+       int delta;
+       int threshold = priv->cfg->base_params->plcp_delta_threshold;
+
+       if (threshold == IWL_MAX_PLCP_ERR_THRESHOLD_DISABLE) {
+               IWL_DEBUG_RADIO(priv, "plcp_err check disabled\n");
+               return true;
+       }
+
+       delta = le32_to_cpu(cur_ofdm->plcp_err) -
+               le32_to_cpu(priv->statistics.rx_ofdm.plcp_err) +
+               le32_to_cpu(cur_ofdm_ht->plcp_err) -
+               le32_to_cpu(priv->statistics.rx_ofdm_ht.plcp_err);
+
+       /* Can be negative if firmware reset statistics */
+       if (delta <= 0)
+               return true;
+
+       if ((delta * 100 / msecs) > threshold) {
+               IWL_DEBUG_RADIO(priv,
+                               "plcp health threshold %u delta %d msecs %u\n",
+                               threshold, delta, msecs);
+               return false;
+       }
+
+       return true;
+}
+
+static void iwlagn_recover_from_statistics(struct iwl_priv *priv,
+                               struct statistics_rx_phy *cur_ofdm,
+                               struct statistics_rx_ht_phy *cur_ofdm_ht,
+                               struct statistics_tx *tx,
+                               unsigned long stamp)
+{
+       unsigned int msecs;
+
+       if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
+               return;
+
+       msecs = jiffies_to_msecs(stamp - priv->rx_statistics_jiffies);
+
+       /* Only gather statistics and update time stamp when not associated */
+       if (!iwl_is_any_associated(priv))
+               return;
+
+       /* Do not check/recover when do not have enough statistics data */
+       if (msecs < 99)
+               return;
+
+       if (iwlagn_mod_params.ack_check && !iwlagn_good_ack_health(priv, tx)) {
+               IWL_ERR(priv, "low ack count detected, restart firmware\n");
+               if (!iwl_force_reset(priv, IWL_FW_RESET, false))
+                       return;
+       }
+
+       if (iwlagn_mod_params.plcp_check &&
+           !iwlagn_good_plcp_health(priv, cur_ofdm, cur_ofdm_ht, msecs))
+               iwl_force_reset(priv, IWL_RF_RESET, false);
+}
+
+/* Calculate noise level, based on measurements during network silence just
+ *   before arriving beacon.  This measurement can be done only if we know
+ *   exactly when to expect beacons, therefore only when we're associated. */
+static void iwlagn_rx_calc_noise(struct iwl_priv *priv)
+{
+       struct statistics_rx_non_phy *rx_info;
+       int num_active_rx = 0;
+       int total_silence = 0;
+       int bcn_silence_a, bcn_silence_b, bcn_silence_c;
+       int last_rx_noise;
+
+       rx_info = &priv->statistics.rx_non_phy;
+
+       bcn_silence_a =
+               le32_to_cpu(rx_info->beacon_silence_rssi_a) & IN_BAND_FILTER;
+       bcn_silence_b =
+               le32_to_cpu(rx_info->beacon_silence_rssi_b) & IN_BAND_FILTER;
+       bcn_silence_c =
+               le32_to_cpu(rx_info->beacon_silence_rssi_c) & IN_BAND_FILTER;
+
+       if (bcn_silence_a) {
+               total_silence += bcn_silence_a;
+               num_active_rx++;
+       }
+       if (bcn_silence_b) {
+               total_silence += bcn_silence_b;
+               num_active_rx++;
+       }
+       if (bcn_silence_c) {
+               total_silence += bcn_silence_c;
+               num_active_rx++;
+       }
+
+       /* Average among active antennas */
+       if (num_active_rx)
+               last_rx_noise = (total_silence / num_active_rx) - 107;
+       else
+               last_rx_noise = IWL_NOISE_MEAS_NOT_AVAILABLE;
+
+       IWL_DEBUG_CALIB(priv, "inband silence a %u, b %u, c %u, dBm %d\n",
+                       bcn_silence_a, bcn_silence_b, bcn_silence_c,
+                       last_rx_noise);
+}
+
+#ifdef CONFIG_IWLWIFI_DEBUGFS
+/*
+ *  based on the assumption of all statistics counter are in DWORD
+ *  FIXME: This function is for debugging, do not deal with
+ *  the case of counters roll-over.
+ */
+static void accum_stats(__le32 *prev, __le32 *cur, __le32 *delta,
+                       __le32 *max_delta, __le32 *accum, int size)
+{
+       int i;
+
+       for (i = 0;
+            i < size / sizeof(__le32);
+            i++, prev++, cur++, delta++, max_delta++, accum++) {
+               if (le32_to_cpu(*cur) > le32_to_cpu(*prev)) {
+                       *delta = cpu_to_le32(
+                               le32_to_cpu(*cur) - le32_to_cpu(*prev));
+                       le32_add_cpu(accum, le32_to_cpu(*delta));
+                       if (le32_to_cpu(*delta) > le32_to_cpu(*max_delta))
+                               *max_delta = *delta;
+               }
+       }
+}
+
+static void
+iwlagn_accumulative_statistics(struct iwl_priv *priv,
+                           struct statistics_general_common *common,
+                           struct statistics_rx_non_phy *rx_non_phy,
+                           struct statistics_rx_phy *rx_ofdm,
+                           struct statistics_rx_ht_phy *rx_ofdm_ht,
+                           struct statistics_rx_phy *rx_cck,
+                           struct statistics_tx *tx,
+                           struct statistics_bt_activity *bt_activity)
+{
+#define ACCUM(_name)   \
+       accum_stats((__le32 *)&priv->statistics._name,          \
+                   (__le32 *)_name,                            \
+                   (__le32 *)&priv->delta_stats._name,         \
+                   (__le32 *)&priv->max_delta_stats._name,     \
+                   (__le32 *)&priv->accum_stats._name,         \
+                   sizeof(*_name));
+
+       ACCUM(common);
+       ACCUM(rx_non_phy);
+       ACCUM(rx_ofdm);
+       ACCUM(rx_ofdm_ht);
+       ACCUM(rx_cck);
+       ACCUM(tx);
+       if (bt_activity)
+               ACCUM(bt_activity);
+#undef ACCUM
+}
+#else
+static inline void
+iwlagn_accumulative_statistics(struct iwl_priv *priv,
+                           struct statistics_general_common *common,
+                           struct statistics_rx_non_phy *rx_non_phy,
+                           struct statistics_rx_phy *rx_ofdm,
+                           struct statistics_rx_ht_phy *rx_ofdm_ht,
+                           struct statistics_rx_phy *rx_cck,
+                           struct statistics_tx *tx,
+                           struct statistics_bt_activity *bt_activity)
+{
+}
+#endif
+
+static int iwlagn_rx_statistics(struct iwl_priv *priv,
+                             struct iwl_rx_mem_buffer *rxb,
+                             struct iwl_device_cmd *cmd)
+{
+       unsigned long stamp = jiffies;
+       const int reg_recalib_period = 60;
+       int change;
+       struct iwl_rx_packet *pkt = rxb_addr(rxb);
+       u32 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
+       __le32 *flag;
+       struct statistics_general_common *common;
+       struct statistics_rx_non_phy *rx_non_phy;
+       struct statistics_rx_phy *rx_ofdm;
+       struct statistics_rx_ht_phy *rx_ofdm_ht;
+       struct statistics_rx_phy *rx_cck;
+       struct statistics_tx *tx;
+       struct statistics_bt_activity *bt_activity;
+
+       len -= sizeof(struct iwl_cmd_header); /* skip header */
+
+       IWL_DEBUG_RX(priv, "Statistics notification received (%d bytes).\n",
+                    len);
+
+       if (len == sizeof(struct iwl_bt_notif_statistics)) {
+               struct iwl_bt_notif_statistics *stats;
+               stats = &pkt->u.stats_bt;
+               flag = &stats->flag;
+               common = &stats->general.common;
+               rx_non_phy = &stats->rx.general.common;
+               rx_ofdm = &stats->rx.ofdm;
+               rx_ofdm_ht = &stats->rx.ofdm_ht;
+               rx_cck = &stats->rx.cck;
+               tx = &stats->tx;
+               bt_activity = &stats->general.activity;
+
+#ifdef CONFIG_IWLWIFI_DEBUGFS
+               /* handle this exception directly */
+               priv->statistics.num_bt_kills = stats->rx.general.num_bt_kills;
+               le32_add_cpu(&priv->statistics.accum_num_bt_kills,
+                            le32_to_cpu(stats->rx.general.num_bt_kills));
+#endif
+       } else if (len == sizeof(struct iwl_notif_statistics)) {
+               struct iwl_notif_statistics *stats;
+               stats = &pkt->u.stats;
+               flag = &stats->flag;
+               common = &stats->general.common;
+               rx_non_phy = &stats->rx.general;
+               rx_ofdm = &stats->rx.ofdm;
+               rx_ofdm_ht = &stats->rx.ofdm_ht;
+               rx_cck = &stats->rx.cck;
+               tx = &stats->tx;
+               bt_activity = NULL;
+       } else {
+               WARN_ONCE(1, "len %d doesn't match BT (%zu) or normal (%zu)\n",
+                         len, sizeof(struct iwl_bt_notif_statistics),
+                         sizeof(struct iwl_notif_statistics));
+               return 0;
+       }
+
+       change = common->temperature != priv->statistics.common.temperature ||
+                (*flag & STATISTICS_REPLY_FLG_HT40_MODE_MSK) !=
+                (priv->statistics.flag & STATISTICS_REPLY_FLG_HT40_MODE_MSK);
+
+       iwlagn_accumulative_statistics(priv, common, rx_non_phy, rx_ofdm,
+                                   rx_ofdm_ht, rx_cck, tx, bt_activity);
+
+       iwlagn_recover_from_statistics(priv, rx_ofdm, rx_ofdm_ht, tx, stamp);
+
+       priv->statistics.flag = *flag;
+       memcpy(&priv->statistics.common, common, sizeof(*common));
+       memcpy(&priv->statistics.rx_non_phy, rx_non_phy, sizeof(*rx_non_phy));
+       memcpy(&priv->statistics.rx_ofdm, rx_ofdm, sizeof(*rx_ofdm));
+       memcpy(&priv->statistics.rx_ofdm_ht, rx_ofdm_ht, sizeof(*rx_ofdm_ht));
+       memcpy(&priv->statistics.rx_cck, rx_cck, sizeof(*rx_cck));
+       memcpy(&priv->statistics.tx, tx, sizeof(*tx));
+#ifdef CONFIG_IWLWIFI_DEBUGFS
+       if (bt_activity)
+               memcpy(&priv->statistics.bt_activity, bt_activity,
+                       sizeof(*bt_activity));
+#endif
+
+       priv->rx_statistics_jiffies = stamp;
+
+       set_bit(STATUS_STATISTICS, &priv->shrd->status);
+
+       /* Reschedule the statistics timer to occur in
+        * reg_recalib_period seconds to ensure we get a
+        * thermal update even if the uCode doesn't give
+        * us one */
+       mod_timer(&priv->statistics_periodic, jiffies +
+                 msecs_to_jiffies(reg_recalib_period * 1000));
+
+       if (unlikely(!test_bit(STATUS_SCANNING, &priv->shrd->status)) &&
+           (pkt->hdr.cmd == STATISTICS_NOTIFICATION)) {
+               iwlagn_rx_calc_noise(priv);
+               queue_work(priv->shrd->workqueue, &priv->run_time_calib_work);
+       }
+       if (priv->cfg->lib->temperature && change)
+               priv->cfg->lib->temperature(priv);
+       return 0;
+}
+
+static int iwlagn_rx_reply_statistics(struct iwl_priv *priv,
+                                   struct iwl_rx_mem_buffer *rxb,
+                                   struct iwl_device_cmd *cmd)
+{
+       struct iwl_rx_packet *pkt = rxb_addr(rxb);
+
+       if (le32_to_cpu(pkt->u.stats.flag) & UCODE_STATISTICS_CLEAR_MSK) {
+#ifdef CONFIG_IWLWIFI_DEBUGFS
+               memset(&priv->accum_stats, 0,
+                       sizeof(priv->accum_stats));
+               memset(&priv->delta_stats, 0,
+                       sizeof(priv->delta_stats));
+               memset(&priv->max_delta_stats, 0,
+                       sizeof(priv->max_delta_stats));
+#endif
+               IWL_DEBUG_RX(priv, "Statistics have been cleared\n");
+       }
+       iwlagn_rx_statistics(priv, rxb, cmd);
+       return 0;
+}
+
+/* Handle notification from uCode that card's power state is changing
+ * due to software, hardware, or critical temperature RFKILL */
+static int iwlagn_rx_card_state_notif(struct iwl_priv *priv,
+                                   struct iwl_rx_mem_buffer *rxb,
+                                   struct iwl_device_cmd *cmd)
+{
+       struct iwl_rx_packet *pkt = rxb_addr(rxb);
+       u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
+       unsigned long status = priv->shrd->status;
+
+       IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s CT:%s\n",
+                         (flags & HW_CARD_DISABLED) ? "Kill" : "On",
+                         (flags & SW_CARD_DISABLED) ? "Kill" : "On",
+                         (flags & CT_CARD_DISABLED) ?
+                         "Reached" : "Not reached");
+
+       if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
+                    CT_CARD_DISABLED)) {
+
+               iwl_write32(bus(priv), CSR_UCODE_DRV_GP1_SET,
+                           CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
+
+               iwl_write_direct32(bus(priv), HBUS_TARG_MBX_C,
+                                       HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
+
+               if (!(flags & RXON_CARD_DISABLED)) {
+                       iwl_write32(bus(priv), CSR_UCODE_DRV_GP1_CLR,
+                                   CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
+                       iwl_write_direct32(bus(priv), HBUS_TARG_MBX_C,
+                                       HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
+               }
+               if (flags & CT_CARD_DISABLED)
+                       iwl_tt_enter_ct_kill(priv);
+       }
+       if (!(flags & CT_CARD_DISABLED))
+               iwl_tt_exit_ct_kill(priv);
+
+       if (flags & HW_CARD_DISABLED)
+               set_bit(STATUS_RF_KILL_HW, &priv->shrd->status);
+       else
+               clear_bit(STATUS_RF_KILL_HW, &priv->shrd->status);
+
+
+       if (!(flags & RXON_CARD_DISABLED))
+               iwl_scan_cancel(priv);
+
+       if ((test_bit(STATUS_RF_KILL_HW, &status) !=
+            test_bit(STATUS_RF_KILL_HW, &priv->shrd->status)))
+               wiphy_rfkill_set_hw_state(priv->hw->wiphy,
+                       test_bit(STATUS_RF_KILL_HW, &priv->shrd->status));
+       else
+               wake_up(&priv->shrd->wait_command_queue);
+       return 0;
+}
+
+static int iwlagn_rx_missed_beacon_notif(struct iwl_priv *priv,
+                                      struct iwl_rx_mem_buffer *rxb,
+                                      struct iwl_device_cmd *cmd)
+
+{
+       struct iwl_rx_packet *pkt = rxb_addr(rxb);
+       struct iwl_missed_beacon_notif *missed_beacon;
+
+       missed_beacon = &pkt->u.missed_beacon;
+       if (le32_to_cpu(missed_beacon->consecutive_missed_beacons) >
+           priv->missed_beacon_threshold) {
+               IWL_DEBUG_CALIB(priv,
+                   "missed bcn cnsq %d totl %d rcd %d expctd %d\n",
+                   le32_to_cpu(missed_beacon->consecutive_missed_beacons),
+                   le32_to_cpu(missed_beacon->total_missed_becons),
+                   le32_to_cpu(missed_beacon->num_recvd_beacons),
+                   le32_to_cpu(missed_beacon->num_expected_beacons));
+               if (!test_bit(STATUS_SCANNING, &priv->shrd->status))
+                       iwl_init_sensitivity(priv);
+       }
+       return 0;
+}
+
+/* Cache phy data (Rx signal strength, etc) for HT frame (REPLY_RX_PHY_CMD).
+ * This will be used later in iwl_rx_reply_rx() for REPLY_RX_MPDU_CMD. */
+static int iwlagn_rx_reply_rx_phy(struct iwl_priv *priv,
+                               struct iwl_rx_mem_buffer *rxb,
+                               struct iwl_device_cmd *cmd)
+{
+       struct iwl_rx_packet *pkt = rxb_addr(rxb);
+
+       priv->last_phy_res_valid = true;
+       memcpy(&priv->last_phy_res, pkt->u.raw,
+              sizeof(struct iwl_rx_phy_res));
+       return 0;
+}
+
+/*
+ * returns non-zero if packet should be dropped
+ */
+static int iwlagn_set_decrypted_flag(struct iwl_priv *priv,
+                                 struct ieee80211_hdr *hdr,
+                                 u32 decrypt_res,
+                                 struct ieee80211_rx_status *stats)
+{
+       u16 fc = le16_to_cpu(hdr->frame_control);
+
+       /*
+        * All contexts have the same setting here due to it being
+        * a module parameter, so OK to check any context.
+        */
+       if (priv->contexts[IWL_RXON_CTX_BSS].active.filter_flags &
+                                               RXON_FILTER_DIS_DECRYPT_MSK)
+               return 0;
+
+       if (!(fc & IEEE80211_FCTL_PROTECTED))
+               return 0;
+
+       IWL_DEBUG_RX(priv, "decrypt_res:0x%x\n", decrypt_res);
+       switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
+       case RX_RES_STATUS_SEC_TYPE_TKIP:
+               /* The uCode has got a bad phase 1 Key, pushes the packet.
+                * Decryption will be done in SW. */
+               if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
+                   RX_RES_STATUS_BAD_KEY_TTAK)
+                       break;
+
+       case RX_RES_STATUS_SEC_TYPE_WEP:
+               if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
+                   RX_RES_STATUS_BAD_ICV_MIC) {
+                       /* bad ICV, the packet is destroyed since the
+                        * decryption is inplace, drop it */
+                       IWL_DEBUG_RX(priv, "Packet destroyed\n");
+                       return -1;
+               }
+       case RX_RES_STATUS_SEC_TYPE_CCMP:
+               if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
+                   RX_RES_STATUS_DECRYPT_OK) {
+                       IWL_DEBUG_RX(priv, "hw decrypt successfully!!!\n");
+                       stats->flag |= RX_FLAG_DECRYPTED;
+               }
+               break;
+
+       default:
+               break;
+       }
+       return 0;
+}
+
+static void iwlagn_pass_packet_to_mac80211(struct iwl_priv *priv,
+                                       struct ieee80211_hdr *hdr,
+                                       u16 len,
+                                       u32 ampdu_status,
+                                       struct iwl_rx_mem_buffer *rxb,
+                                       struct ieee80211_rx_status *stats)
+{
+       struct sk_buff *skb;
+       __le16 fc = hdr->frame_control;
+       struct iwl_rxon_context *ctx;
+
+       /* We only process data packets if the interface is open */
+       if (unlikely(!priv->is_open)) {
+               IWL_DEBUG_DROP_LIMIT(priv,
+                   "Dropping packet while interface is not open.\n");
+               return;
+       }
+
+       /* In case of HW accelerated crypto and bad decryption, drop */
+       if (!iwlagn_mod_params.sw_crypto &&
+           iwlagn_set_decrypted_flag(priv, hdr, ampdu_status, stats))
+               return;
+
+       skb = dev_alloc_skb(128);
+       if (!skb) {
+               IWL_ERR(priv, "dev_alloc_skb failed\n");
+               return;
+       }
+
+       skb_add_rx_frag(skb, 0, rxb->page, (void *)hdr - rxb_addr(rxb), len);
+
+       iwl_update_stats(priv, false, fc, len);
+
+       /*
+       * Wake any queues that were stopped due to a passive channel tx
+       * failure. This can happen because the regulatory enforcement in
+       * the device waits for a beacon before allowing transmission,
+       * sometimes even after already having transmitted frames for the
+       * association because the new RXON may reset the information.
+       */
+       if (unlikely(ieee80211_is_beacon(fc))) {
+               for_each_context(priv, ctx) {
+                       if (!ctx->last_tx_rejected)
+                               continue;
+                       if (compare_ether_addr(hdr->addr3,
+                                              ctx->active.bssid_addr))
+                               continue;
+                       ctx->last_tx_rejected = false;
+                       iwl_trans_wake_any_queue(trans(priv), ctx->ctxid);
+               }
+       }
+
+       memcpy(IEEE80211_SKB_RXCB(skb), stats, sizeof(*stats));
+
+       ieee80211_rx(priv->hw, skb);
+       rxb->page = NULL;
+}
+
+static u32 iwlagn_translate_rx_status(struct iwl_priv *priv, u32 decrypt_in)
+{
+       u32 decrypt_out = 0;
+
+       if ((decrypt_in & RX_RES_STATUS_STATION_FOUND) ==
+                                       RX_RES_STATUS_STATION_FOUND)
+               decrypt_out |= (RX_RES_STATUS_STATION_FOUND |
+                               RX_RES_STATUS_NO_STATION_INFO_MISMATCH);
+
+       decrypt_out |= (decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK);
+
+       /* packet was not encrypted */
+       if ((decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK) ==
+                                       RX_RES_STATUS_SEC_TYPE_NONE)
+               return decrypt_out;
+
+       /* packet was encrypted with unknown alg */
+       if ((decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK) ==
+                                       RX_RES_STATUS_SEC_TYPE_ERR)
+               return decrypt_out;
+
+       /* decryption was not done in HW */
+       if ((decrypt_in & RX_MPDU_RES_STATUS_DEC_DONE_MSK) !=
+                                       RX_MPDU_RES_STATUS_DEC_DONE_MSK)
+               return decrypt_out;
+
+       switch (decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK) {
+
+       case RX_RES_STATUS_SEC_TYPE_CCMP:
+               /* alg is CCM: check MIC only */
+               if (!(decrypt_in & RX_MPDU_RES_STATUS_MIC_OK))
+                       /* Bad MIC */
+                       decrypt_out |= RX_RES_STATUS_BAD_ICV_MIC;
+               else
+                       decrypt_out |= RX_RES_STATUS_DECRYPT_OK;
+
+               break;
+
+       case RX_RES_STATUS_SEC_TYPE_TKIP:
+               if (!(decrypt_in & RX_MPDU_RES_STATUS_TTAK_OK)) {
+                       /* Bad TTAK */
+                       decrypt_out |= RX_RES_STATUS_BAD_KEY_TTAK;
+                       break;
+               }
+               /* fall through if TTAK OK */
+       default:
+               if (!(decrypt_in & RX_MPDU_RES_STATUS_ICV_OK))
+                       decrypt_out |= RX_RES_STATUS_BAD_ICV_MIC;
+               else
+                       decrypt_out |= RX_RES_STATUS_DECRYPT_OK;
+               break;
+       }
+
+       IWL_DEBUG_RX(priv, "decrypt_in:0x%x  decrypt_out = 0x%x\n",
+                                       decrypt_in, decrypt_out);
+
+       return decrypt_out;
+}
+
+/* Calc max signal level (dBm) among 3 possible receivers */
+static int iwlagn_calc_rssi(struct iwl_priv *priv,
+                            struct iwl_rx_phy_res *rx_resp)
+{
+       /* data from PHY/DSP regarding signal strength, etc.,
+        *   contents are always there, not configurable by host
+        */
+       struct iwlagn_non_cfg_phy *ncphy =
+               (struct iwlagn_non_cfg_phy *)rx_resp->non_cfg_phy_buf;
+       u32 val, rssi_a, rssi_b, rssi_c, max_rssi;
+       u8 agc;
+
+       val  = le32_to_cpu(ncphy->non_cfg_phy[IWLAGN_RX_RES_AGC_IDX]);
+       agc = (val & IWLAGN_OFDM_AGC_MSK) >> IWLAGN_OFDM_AGC_BIT_POS;
+
+       /* Find max rssi among 3 possible receivers.
+        * These values are measured by the digital signal processor (DSP).
+        * They should stay fairly constant even as the signal strength varies,
+        *   if the radio's automatic gain control (AGC) is working right.
+        * AGC value (see below) will provide the "interesting" info.
+        */
+       val = le32_to_cpu(ncphy->non_cfg_phy[IWLAGN_RX_RES_RSSI_AB_IDX]);
+       rssi_a = (val & IWLAGN_OFDM_RSSI_INBAND_A_BITMSK) >>
+               IWLAGN_OFDM_RSSI_A_BIT_POS;
+       rssi_b = (val & IWLAGN_OFDM_RSSI_INBAND_B_BITMSK) >>
+               IWLAGN_OFDM_RSSI_B_BIT_POS;
+       val = le32_to_cpu(ncphy->non_cfg_phy[IWLAGN_RX_RES_RSSI_C_IDX]);
+       rssi_c = (val & IWLAGN_OFDM_RSSI_INBAND_C_BITMSK) >>
+               IWLAGN_OFDM_RSSI_C_BIT_POS;
+
+       max_rssi = max_t(u32, rssi_a, rssi_b);
+       max_rssi = max_t(u32, max_rssi, rssi_c);
+
+       IWL_DEBUG_STATS(priv, "Rssi In A %d B %d C %d Max %d AGC dB %d\n",
+               rssi_a, rssi_b, rssi_c, max_rssi, agc);
+
+       /* dBm = max_rssi dB - agc dB - constant.
+        * Higher AGC (higher radio gain) means lower signal. */
+       return max_rssi - agc - IWLAGN_RSSI_OFFSET;
+}
+
+/* Called for REPLY_RX (legacy ABG frames), or
+ * REPLY_RX_MPDU_CMD (HT high-throughput N frames). */
+static int iwlagn_rx_reply_rx(struct iwl_priv *priv,
+                           struct iwl_rx_mem_buffer *rxb,
+                           struct iwl_device_cmd *cmd)
+{
+       struct ieee80211_hdr *header;
+       struct ieee80211_rx_status rx_status;
+       struct iwl_rx_packet *pkt = rxb_addr(rxb);
+       struct iwl_rx_phy_res *phy_res;
+       __le32 rx_pkt_status;
+       struct iwl_rx_mpdu_res_start *amsdu;
+       u32 len;
+       u32 ampdu_status;
+       u32 rate_n_flags;
+
+       /**
+        * REPLY_RX and REPLY_RX_MPDU_CMD are handled differently.
+        *      REPLY_RX: physical layer info is in this buffer
+        *      REPLY_RX_MPDU_CMD: physical layer info was sent in separate
+        *              command and cached in priv->last_phy_res
+        *
+        * Here we set up local variables depending on which command is
+        * received.
+        */
+       if (pkt->hdr.cmd == REPLY_RX) {
+               phy_res = (struct iwl_rx_phy_res *)pkt->u.raw;
+               header = (struct ieee80211_hdr *)(pkt->u.raw + sizeof(*phy_res)
+                               + phy_res->cfg_phy_cnt);
+
+               len = le16_to_cpu(phy_res->byte_count);
+               rx_pkt_status = *(__le32 *)(pkt->u.raw + sizeof(*phy_res) +
+                               phy_res->cfg_phy_cnt + len);
+               ampdu_status = le32_to_cpu(rx_pkt_status);
+       } else {
+               if (!priv->last_phy_res_valid) {
+                       IWL_ERR(priv, "MPDU frame without cached PHY data\n");
+                       return 0;
+               }
+               phy_res = &priv->last_phy_res;
+               amsdu = (struct iwl_rx_mpdu_res_start *)pkt->u.raw;
+               header = (struct ieee80211_hdr *)(pkt->u.raw + sizeof(*amsdu));
+               len = le16_to_cpu(amsdu->byte_count);
+               rx_pkt_status = *(__le32 *)(pkt->u.raw + sizeof(*amsdu) + len);
+               ampdu_status = iwlagn_translate_rx_status(priv,
+                                               le32_to_cpu(rx_pkt_status));
+       }
+
+       if ((unlikely(phy_res->cfg_phy_cnt > 20))) {
+               IWL_DEBUG_DROP(priv, "dsp size out of range [0,20]: %d/n",
+                               phy_res->cfg_phy_cnt);
+               return 0;
+       }
+
+       if (!(rx_pkt_status & RX_RES_STATUS_NO_CRC32_ERROR) ||
+           !(rx_pkt_status & RX_RES_STATUS_NO_RXE_OVERFLOW)) {
+               IWL_DEBUG_RX(priv, "Bad CRC or FIFO: 0x%08X.\n",
+                               le32_to_cpu(rx_pkt_status));
+               return 0;
+       }
+
+       /* This will be used in several places later */
+       rate_n_flags = le32_to_cpu(phy_res->rate_n_flags);
+
+       /* rx_status carries information about the packet to mac80211 */
+       rx_status.mactime = le64_to_cpu(phy_res->timestamp);
+       rx_status.band = (phy_res->phy_flags & RX_RES_PHY_FLAGS_BAND_24_MSK) ?
+                               IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ;
+       rx_status.freq =
+               ieee80211_channel_to_frequency(le16_to_cpu(phy_res->channel),
+                                              rx_status.band);
+       rx_status.rate_idx =
+               iwlagn_hwrate_to_mac80211_idx(rate_n_flags, rx_status.band);
+       rx_status.flag = 0;
+
+       /* TSF isn't reliable. In order to allow smooth user experience,
+        * this W/A doesn't propagate it to the mac80211 */
+       /*rx_status.flag |= RX_FLAG_MACTIME_MPDU;*/
+
+       priv->ucode_beacon_time = le32_to_cpu(phy_res->beacon_time_stamp);
+
+       /* Find max signal strength (dBm) among 3 antenna/receiver chains */
+       rx_status.signal = iwlagn_calc_rssi(priv, phy_res);
+
+       iwl_dbg_log_rx_data_frame(priv, len, header);
+       IWL_DEBUG_STATS_LIMIT(priv, "Rssi %d, TSF %llu\n",
+               rx_status.signal, (unsigned long long)rx_status.mactime);
+
+       /*
+        * "antenna number"
+        *
+        * It seems that the antenna field in the phy flags value
+        * is actually a bit field. This is undefined by radiotap,
+        * it wants an actual antenna number but I always get "7"
+        * for most legacy frames I receive indicating that the
+        * same frame was received on all three RX chains.
+        *
+        * I think this field should be removed in favor of a
+        * new 802.11n radiotap field "RX chains" that is defined
+        * as a bitmask.
+        */
+       rx_status.antenna =
+               (le16_to_cpu(phy_res->phy_flags) & RX_RES_PHY_FLAGS_ANTENNA_MSK)
+               >> RX_RES_PHY_FLAGS_ANTENNA_POS;
+
+       /* set the preamble flag if appropriate */
+       if (phy_res->phy_flags & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK)
+               rx_status.flag |= RX_FLAG_SHORTPRE;
+
+       /* Set up the HT phy flags */
+       if (rate_n_flags & RATE_MCS_HT_MSK)
+               rx_status.flag |= RX_FLAG_HT;
+       if (rate_n_flags & RATE_MCS_HT40_MSK)
+               rx_status.flag |= RX_FLAG_40MHZ;
+       if (rate_n_flags & RATE_MCS_SGI_MSK)
+               rx_status.flag |= RX_FLAG_SHORT_GI;
+
+       iwlagn_pass_packet_to_mac80211(priv, header, len, ampdu_status,
+                                   rxb, &rx_status);
+       return 0;
+}
+
+/**
+ * iwl_setup_rx_handlers - Initialize Rx handler callbacks
+ *
+ * Setup the RX handlers for each of the reply types sent from the uCode
+ * to the host.
+ */
+void iwl_setup_rx_handlers(struct iwl_priv *priv)
+{
+       int (**handlers)(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb,
+                              struct iwl_device_cmd *cmd);
+
+       handlers = priv->rx_handlers;
+
+       handlers[REPLY_ERROR]                   = iwlagn_rx_reply_error;
+       handlers[CHANNEL_SWITCH_NOTIFICATION]   = iwlagn_rx_csa;
+       handlers[SPECTRUM_MEASURE_NOTIFICATION] =
+               iwlagn_rx_spectrum_measure_notif;
+       handlers[PM_SLEEP_NOTIFICATION]         = iwlagn_rx_pm_sleep_notif;
+       handlers[PM_DEBUG_STATISTIC_NOTIFIC]    =
+               iwlagn_rx_pm_debug_statistics_notif;
+       handlers[BEACON_NOTIFICATION]           = iwlagn_rx_beacon_notif;
+       handlers[REPLY_ADD_STA]                 = iwl_add_sta_callback;
+
+       /*
+        * The same handler is used for both the REPLY to a discrete
+        * statistics request from the host as well as for the periodic
+        * statistics notifications (after received beacons) from the uCode.
+        */
+       handlers[REPLY_STATISTICS_CMD]          = iwlagn_rx_reply_statistics;
+       handlers[STATISTICS_NOTIFICATION]       = iwlagn_rx_statistics;
+
+       iwl_setup_rx_scan_handlers(priv);
+
+       handlers[CARD_STATE_NOTIFICATION]       = iwlagn_rx_card_state_notif;
+       handlers[MISSED_BEACONS_NOTIFICATION]   =
+               iwlagn_rx_missed_beacon_notif;
+
+       /* Rx handlers */
+       handlers[REPLY_RX_PHY_CMD]              = iwlagn_rx_reply_rx_phy;
+       handlers[REPLY_RX_MPDU_CMD]             = iwlagn_rx_reply_rx;
+
+       /* block ack */
+       handlers[REPLY_COMPRESSED_BA]           =
+               iwlagn_rx_reply_compressed_ba;
+
+       /* init calibration handlers */
+       priv->rx_handlers[CALIBRATION_RES_NOTIFICATION] =
+                                       iwlagn_rx_calib_result;
+       priv->rx_handlers[REPLY_TX] = iwlagn_rx_reply_tx;
+
+       /* set up notification wait support */
+       spin_lock_init(&priv->notif_wait_lock);
+       INIT_LIST_HEAD(&priv->notif_waits);
+       init_waitqueue_head(&priv->notif_waitq);
+
+       /* Set up BT Rx handlers */
+       if (priv->cfg->lib->bt_rx_handler_setup)
+               priv->cfg->lib->bt_rx_handler_setup(priv);
+
+}
+
+int iwl_rx_dispatch(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb,
+                    struct iwl_device_cmd *cmd)
+{
+       struct iwl_rx_packet *pkt = rxb_addr(rxb);
+       int err = 0;
+
+       /*
+        * Do the notification wait before RX handlers so
+        * even if the RX handler consumes the RXB we have
+        * access to it in the notification wait entry.
+        */
+       if (!list_empty(&priv->notif_waits)) {
+               struct iwl_notification_wait *w;
+
+               spin_lock(&priv->notif_wait_lock);
+               list_for_each_entry(w, &priv->notif_waits, list) {
+                       if (w->cmd != pkt->hdr.cmd)
+                               continue;
+                       IWL_DEBUG_RX(priv,
+                               "Notif: %s, 0x%02x - wake the callers up\n",
+                               get_cmd_string(pkt->hdr.cmd),
+                               pkt->hdr.cmd);
+                       w->triggered = true;
+                       if (w->fn)
+                               w->fn(priv, pkt, w->fn_data);
+               }
+               spin_unlock(&priv->notif_wait_lock);
+
+               wake_up_all(&priv->notif_waitq);
+       }
+
+       if (priv->pre_rx_handler)
+               priv->pre_rx_handler(priv, rxb);
+
+       /* Based on type of command response or notification,
+        *   handle those that need handling via function in
+        *   rx_handlers table.  See iwl_setup_rx_handlers() */
+       if (priv->rx_handlers[pkt->hdr.cmd]) {
+               priv->rx_handlers_stats[pkt->hdr.cmd]++;
+               err = priv->rx_handlers[pkt->hdr.cmd] (priv, rxb, cmd);
+       } else {
+               /* No handling needed */
+               IWL_DEBUG_RX(priv,
+                       "No handler needed for %s, 0x%02x\n",
+                       get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
+       }
+       return err;
+}
diff --git a/drivers/net/wireless/iwlwifi/iwl-rx.c b/drivers/net/wireless/iwlwifi/iwl-rx.c
deleted file mode 100644 (file)
index d406c72..0000000
+++ /dev/null
@@ -1,1139 +0,0 @@
-/******************************************************************************
- *
- * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved.
- *
- * Portions of this file are derived from the ipw3945 project, as well
- * as portions of the ieee80211 subsystem header files.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
- *
- * The full GNU General Public License is included in this distribution in the
- * file called LICENSE.
- *
- * Contact Information:
- *  Intel Linux Wireless <ilw@linux.intel.com>
- * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
- *
- *****************************************************************************/
-
-#include <linux/etherdevice.h>
-#include <linux/slab.h>
-#include <linux/sched.h>
-#include <net/mac80211.h>
-#include <asm/unaligned.h>
-#include "iwl-eeprom.h"
-#include "iwl-dev.h"
-#include "iwl-core.h"
-#include "iwl-io.h"
-#include "iwl-helpers.h"
-#include "iwl-agn-calib.h"
-#include "iwl-agn.h"
-#include "iwl-shared.h"
-
-const char *get_cmd_string(u8 cmd)
-{
-       switch (cmd) {
-               IWL_CMD(REPLY_ALIVE);
-               IWL_CMD(REPLY_ERROR);
-               IWL_CMD(REPLY_ECHO);
-               IWL_CMD(REPLY_RXON);
-               IWL_CMD(REPLY_RXON_ASSOC);
-               IWL_CMD(REPLY_QOS_PARAM);
-               IWL_CMD(REPLY_RXON_TIMING);
-               IWL_CMD(REPLY_ADD_STA);
-               IWL_CMD(REPLY_REMOVE_STA);
-               IWL_CMD(REPLY_REMOVE_ALL_STA);
-               IWL_CMD(REPLY_TXFIFO_FLUSH);
-               IWL_CMD(REPLY_WEPKEY);
-               IWL_CMD(REPLY_TX);
-               IWL_CMD(REPLY_LEDS_CMD);
-               IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
-               IWL_CMD(COEX_PRIORITY_TABLE_CMD);
-               IWL_CMD(COEX_MEDIUM_NOTIFICATION);
-               IWL_CMD(COEX_EVENT_CMD);
-               IWL_CMD(REPLY_QUIET_CMD);
-               IWL_CMD(REPLY_CHANNEL_SWITCH);
-               IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
-               IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
-               IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
-               IWL_CMD(POWER_TABLE_CMD);
-               IWL_CMD(PM_SLEEP_NOTIFICATION);
-               IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
-               IWL_CMD(REPLY_SCAN_CMD);
-               IWL_CMD(REPLY_SCAN_ABORT_CMD);
-               IWL_CMD(SCAN_START_NOTIFICATION);
-               IWL_CMD(SCAN_RESULTS_NOTIFICATION);
-               IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
-               IWL_CMD(BEACON_NOTIFICATION);
-               IWL_CMD(REPLY_TX_BEACON);
-               IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
-               IWL_CMD(QUIET_NOTIFICATION);
-               IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
-               IWL_CMD(MEASURE_ABORT_NOTIFICATION);
-               IWL_CMD(REPLY_BT_CONFIG);
-               IWL_CMD(REPLY_STATISTICS_CMD);
-               IWL_CMD(STATISTICS_NOTIFICATION);
-               IWL_CMD(REPLY_CARD_STATE_CMD);
-               IWL_CMD(CARD_STATE_NOTIFICATION);
-               IWL_CMD(MISSED_BEACONS_NOTIFICATION);
-               IWL_CMD(REPLY_CT_KILL_CONFIG_CMD);
-               IWL_CMD(SENSITIVITY_CMD);
-               IWL_CMD(REPLY_PHY_CALIBRATION_CMD);
-               IWL_CMD(REPLY_RX_PHY_CMD);
-               IWL_CMD(REPLY_RX_MPDU_CMD);
-               IWL_CMD(REPLY_RX);
-               IWL_CMD(REPLY_COMPRESSED_BA);
-               IWL_CMD(CALIBRATION_CFG_CMD);
-               IWL_CMD(CALIBRATION_RES_NOTIFICATION);
-               IWL_CMD(CALIBRATION_COMPLETE_NOTIFICATION);
-               IWL_CMD(REPLY_TX_POWER_DBM_CMD);
-               IWL_CMD(TEMPERATURE_NOTIFICATION);
-               IWL_CMD(TX_ANT_CONFIGURATION_CMD);
-               IWL_CMD(REPLY_BT_COEX_PROFILE_NOTIF);
-               IWL_CMD(REPLY_BT_COEX_PRIO_TABLE);
-               IWL_CMD(REPLY_BT_COEX_PROT_ENV);
-               IWL_CMD(REPLY_WIPAN_PARAMS);
-               IWL_CMD(REPLY_WIPAN_RXON);
-               IWL_CMD(REPLY_WIPAN_RXON_TIMING);
-               IWL_CMD(REPLY_WIPAN_RXON_ASSOC);
-               IWL_CMD(REPLY_WIPAN_QOS_PARAM);
-               IWL_CMD(REPLY_WIPAN_WEPKEY);
-               IWL_CMD(REPLY_WIPAN_P2P_CHANNEL_SWITCH);
-               IWL_CMD(REPLY_WIPAN_NOA_NOTIFICATION);
-               IWL_CMD(REPLY_WIPAN_DEACTIVATION_COMPLETE);
-               IWL_CMD(REPLY_WOWLAN_PATTERNS);
-               IWL_CMD(REPLY_WOWLAN_WAKEUP_FILTER);
-               IWL_CMD(REPLY_WOWLAN_TSC_RSC_PARAMS);
-               IWL_CMD(REPLY_WOWLAN_TKIP_PARAMS);
-               IWL_CMD(REPLY_WOWLAN_KEK_KCK_MATERIAL);
-               IWL_CMD(REPLY_WOWLAN_GET_STATUS);
-       default:
-               return "UNKNOWN";
-
-       }
-}
-
-/******************************************************************************
- *
- * Generic RX handler implementations
- *
- ******************************************************************************/
-
-static int iwl_rx_reply_error(struct iwl_priv *priv,
-                              struct iwl_rx_mem_buffer *rxb,
-                              struct iwl_device_cmd *cmd)
-{
-       struct iwl_rx_packet *pkt = rxb_addr(rxb);
-
-       IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
-               "seq 0x%04X ser 0x%08X\n",
-               le32_to_cpu(pkt->u.err_resp.error_type),
-               get_cmd_string(pkt->u.err_resp.cmd_id),
-               pkt->u.err_resp.cmd_id,
-               le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
-               le32_to_cpu(pkt->u.err_resp.error_info));
-       return 0;
-}
-
-static int iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb,
-                              struct iwl_device_cmd *cmd)
-{
-       struct iwl_rx_packet *pkt = rxb_addr(rxb);
-       struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
-       /*
-        * MULTI-FIXME
-        * See iwlagn_mac_channel_switch.
-        */
-       struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
-       struct iwl_rxon_cmd *rxon = (void *)&ctx->active;
-
-       if (!test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status))
-               return 0;
-
-       if (!le32_to_cpu(csa->status) && csa->channel == priv->switch_channel) {
-               rxon->channel = csa->channel;
-               ctx->staging.channel = csa->channel;
-               IWL_DEBUG_11H(priv, "CSA notif: channel %d\n",
-                             le16_to_cpu(csa->channel));
-               iwl_chswitch_done(priv, true);
-       } else {
-               IWL_ERR(priv, "CSA notif (fail) : channel %d\n",
-                       le16_to_cpu(csa->channel));
-               iwl_chswitch_done(priv, false);
-       }
-       return 0;
-}
-
-
-static int iwl_rx_spectrum_measure_notif(struct iwl_priv *priv,
-                                         struct iwl_rx_mem_buffer *rxb,
-                                         struct iwl_device_cmd *cmd)
-{
-       struct iwl_rx_packet *pkt = rxb_addr(rxb);
-       struct iwl_spectrum_notification *report = &(pkt->u.spectrum_notif);
-
-       if (!report->state) {
-               IWL_DEBUG_11H(priv,
-                       "Spectrum Measure Notification: Start\n");
-               return 0;
-       }
-
-       memcpy(&priv->measure_report, report, sizeof(*report));
-       priv->measurement_status |= MEASUREMENT_READY;
-       return 0;
-}
-
-static int iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
-                                 struct iwl_rx_mem_buffer *rxb,
-                                 struct iwl_device_cmd *cmd)
-{
-#ifdef CONFIG_IWLWIFI_DEBUG
-       struct iwl_rx_packet *pkt = rxb_addr(rxb);
-       struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
-       IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n",
-                    sleep->pm_sleep_mode, sleep->pm_wakeup_src);
-#endif
-       return 0;
-}
-
-static int iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
-                                            struct iwl_rx_mem_buffer *rxb,
-                                            struct iwl_device_cmd *cmd)
-{
-       struct iwl_rx_packet *pkt = rxb_addr(rxb);
-       u32 __maybe_unused len =
-               le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
-       IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled "
-                       "notification for %s:\n", len,
-                       get_cmd_string(pkt->hdr.cmd));
-       iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, len);
-       return 0;
-}
-
-static int iwl_rx_beacon_notif(struct iwl_priv *priv,
-                               struct iwl_rx_mem_buffer *rxb,
-                               struct iwl_device_cmd *cmd)
-{
-       struct iwl_rx_packet *pkt = rxb_addr(rxb);
-       struct iwlagn_beacon_notif *beacon = (void *)pkt->u.raw;
-#ifdef CONFIG_IWLWIFI_DEBUG
-       u16 status = le16_to_cpu(beacon->beacon_notify_hdr.status.status);
-       u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
-
-       IWL_DEBUG_RX(priv, "beacon status %#x, retries:%d ibssmgr:%d "
-               "tsf:0x%.8x%.8x rate:%d\n",
-               status & TX_STATUS_MSK,
-               beacon->beacon_notify_hdr.failure_frame,
-               le32_to_cpu(beacon->ibss_mgr_status),
-               le32_to_cpu(beacon->high_tsf),
-               le32_to_cpu(beacon->low_tsf), rate);
-#endif
-
-       priv->ibss_manager = le32_to_cpu(beacon->ibss_mgr_status);
-
-       return 0;
-}
-
-/* the threshold ratio of actual_ack_cnt to expected_ack_cnt in percent */
-#define ACK_CNT_RATIO (50)
-#define BA_TIMEOUT_CNT (5)
-#define BA_TIMEOUT_MAX (16)
-
-/**
- * iwl_good_ack_health - checks for ACK count ratios, BA timeout retries.
- *
- * When the ACK count ratio is low and aggregated BA timeout retries exceeding
- * the BA_TIMEOUT_MAX, reload firmware and bring system back to normal
- * operation state.
- */
-static bool iwl_good_ack_health(struct iwl_priv *priv,
-                               struct statistics_tx *cur)
-{
-       int actual_delta, expected_delta, ba_timeout_delta;
-       struct statistics_tx *old;
-
-       if (priv->agg_tids_count)
-               return true;
-
-       old = &priv->statistics.tx;
-
-       actual_delta = le32_to_cpu(cur->actual_ack_cnt) -
-                      le32_to_cpu(old->actual_ack_cnt);
-       expected_delta = le32_to_cpu(cur->expected_ack_cnt) -
-                        le32_to_cpu(old->expected_ack_cnt);
-
-       /* Values should not be negative, but we do not trust the firmware */
-       if (actual_delta <= 0 || expected_delta <= 0)
-               return true;
-
-       ba_timeout_delta = le32_to_cpu(cur->agg.ba_timeout) -
-                          le32_to_cpu(old->agg.ba_timeout);
-
-       if ((actual_delta * 100 / expected_delta) < ACK_CNT_RATIO &&
-           ba_timeout_delta > BA_TIMEOUT_CNT) {
-               IWL_DEBUG_RADIO(priv, "deltas: actual %d expected %d ba_timeout %d\n",
-                               actual_delta, expected_delta, ba_timeout_delta);
-
-#ifdef CONFIG_IWLWIFI_DEBUGFS
-               /*
-                * This is ifdef'ed on DEBUGFS because otherwise the
-                * statistics aren't available. If DEBUGFS is set but
-                * DEBUG is not, these will just compile out.
-                */
-               IWL_DEBUG_RADIO(priv, "rx_detected_cnt delta %d\n",
-                               priv->delta_stats.tx.rx_detected_cnt);
-               IWL_DEBUG_RADIO(priv,
-                               "ack_or_ba_timeout_collision delta %d\n",
-                               priv->delta_stats.tx.ack_or_ba_timeout_collision);
-#endif
-
-               if (ba_timeout_delta >= BA_TIMEOUT_MAX)
-                       return false;
-       }
-
-       return true;
-}
-
-/**
- * iwl_good_plcp_health - checks for plcp error.
- *
- * When the plcp error is exceeding the thresholds, reset the radio
- * to improve the throughput.
- */
-static bool iwl_good_plcp_health(struct iwl_priv *priv,
-                                struct statistics_rx_phy *cur_ofdm,
-                                struct statistics_rx_ht_phy *cur_ofdm_ht,
-                                unsigned int msecs)
-{
-       int delta;
-       int threshold = priv->cfg->base_params->plcp_delta_threshold;
-
-       if (threshold == IWL_MAX_PLCP_ERR_THRESHOLD_DISABLE) {
-               IWL_DEBUG_RADIO(priv, "plcp_err check disabled\n");
-               return true;
-       }
-
-       delta = le32_to_cpu(cur_ofdm->plcp_err) -
-               le32_to_cpu(priv->statistics.rx_ofdm.plcp_err) +
-               le32_to_cpu(cur_ofdm_ht->plcp_err) -
-               le32_to_cpu(priv->statistics.rx_ofdm_ht.plcp_err);
-
-       /* Can be negative if firmware reset statistics */
-       if (delta <= 0)
-               return true;
-
-       if ((delta * 100 / msecs) > threshold) {
-               IWL_DEBUG_RADIO(priv,
-                               "plcp health threshold %u delta %d msecs %u\n",
-                               threshold, delta, msecs);
-               return false;
-       }
-
-       return true;
-}
-
-static void iwl_recover_from_statistics(struct iwl_priv *priv,
-                                       struct statistics_rx_phy *cur_ofdm,
-                                       struct statistics_rx_ht_phy *cur_ofdm_ht,
-                                       struct statistics_tx *tx,
-                                       unsigned long stamp)
-{
-       unsigned int msecs;
-
-       if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
-               return;
-
-       msecs = jiffies_to_msecs(stamp - priv->rx_statistics_jiffies);
-
-       /* Only gather statistics and update time stamp when not associated */
-       if (!iwl_is_any_associated(priv))
-               return;
-
-       /* Do not check/recover when do not have enough statistics data */
-       if (msecs < 99)
-               return;
-
-       if (iwlagn_mod_params.ack_check && !iwl_good_ack_health(priv, tx)) {
-               IWL_ERR(priv, "low ack count detected, restart firmware\n");
-               if (!iwl_force_reset(priv, IWL_FW_RESET, false))
-                       return;
-       }
-
-       if (iwlagn_mod_params.plcp_check &&
-           !iwl_good_plcp_health(priv, cur_ofdm, cur_ofdm_ht, msecs))
-               iwl_force_reset(priv, IWL_RF_RESET, false);
-}
-
-/* Calculate noise level, based on measurements during network silence just
- *   before arriving beacon.  This measurement can be done only if we know
- *   exactly when to expect beacons, therefore only when we're associated. */
-static void iwl_rx_calc_noise(struct iwl_priv *priv)
-{
-       struct statistics_rx_non_phy *rx_info;
-       int num_active_rx = 0;
-       int total_silence = 0;
-       int bcn_silence_a, bcn_silence_b, bcn_silence_c;
-       int last_rx_noise;
-
-       rx_info = &priv->statistics.rx_non_phy;
-
-       bcn_silence_a =
-               le32_to_cpu(rx_info->beacon_silence_rssi_a) & IN_BAND_FILTER;
-       bcn_silence_b =
-               le32_to_cpu(rx_info->beacon_silence_rssi_b) & IN_BAND_FILTER;
-       bcn_silence_c =
-               le32_to_cpu(rx_info->beacon_silence_rssi_c) & IN_BAND_FILTER;
-
-       if (bcn_silence_a) {
-               total_silence += bcn_silence_a;
-               num_active_rx++;
-       }
-       if (bcn_silence_b) {
-               total_silence += bcn_silence_b;
-               num_active_rx++;
-       }
-       if (bcn_silence_c) {
-               total_silence += bcn_silence_c;
-               num_active_rx++;
-       }
-
-       /* Average among active antennas */
-       if (num_active_rx)
-               last_rx_noise = (total_silence / num_active_rx) - 107;
-       else
-               last_rx_noise = IWL_NOISE_MEAS_NOT_AVAILABLE;
-
-       IWL_DEBUG_CALIB(priv, "inband silence a %u, b %u, c %u, dBm %d\n",
-                       bcn_silence_a, bcn_silence_b, bcn_silence_c,
-                       last_rx_noise);
-}
-
-#ifdef CONFIG_IWLWIFI_DEBUGFS
-/*
- *  based on the assumption of all statistics counter are in DWORD
- *  FIXME: This function is for debugging, do not deal with
- *  the case of counters roll-over.
- */
-static void accum_stats(__le32 *prev, __le32 *cur, __le32 *delta,
-                       __le32 *max_delta, __le32 *accum, int size)
-{
-       int i;
-
-       for (i = 0;
-            i < size / sizeof(__le32);
-            i++, prev++, cur++, delta++, max_delta++, accum++) {
-               if (le32_to_cpu(*cur) > le32_to_cpu(*prev)) {
-                       *delta = cpu_to_le32(
-                               le32_to_cpu(*cur) - le32_to_cpu(*prev));
-                       le32_add_cpu(accum, le32_to_cpu(*delta));
-                       if (le32_to_cpu(*delta) > le32_to_cpu(*max_delta))
-                               *max_delta = *delta;
-               }
-       }
-}
-
-static void
-iwl_accumulative_statistics(struct iwl_priv *priv,
-                           struct statistics_general_common *common,
-                           struct statistics_rx_non_phy *rx_non_phy,
-                           struct statistics_rx_phy *rx_ofdm,
-                           struct statistics_rx_ht_phy *rx_ofdm_ht,
-                           struct statistics_rx_phy *rx_cck,
-                           struct statistics_tx *tx,
-                           struct statistics_bt_activity *bt_activity)
-{
-#define ACCUM(_name)   \
-       accum_stats((__le32 *)&priv->statistics._name,          \
-                   (__le32 *)_name,                            \
-                   (__le32 *)&priv->delta_stats._name,         \
-                   (__le32 *)&priv->max_delta_stats._name,     \
-                   (__le32 *)&priv->accum_stats._name,         \
-                   sizeof(*_name));
-
-       ACCUM(common);
-       ACCUM(rx_non_phy);
-       ACCUM(rx_ofdm);
-       ACCUM(rx_ofdm_ht);
-       ACCUM(rx_cck);
-       ACCUM(tx);
-       if (bt_activity)
-               ACCUM(bt_activity);
-#undef ACCUM
-}
-#else
-static inline void
-iwl_accumulative_statistics(struct iwl_priv *priv,
-                           struct statistics_general_common *common,
-                           struct statistics_rx_non_phy *rx_non_phy,
-                           struct statistics_rx_phy *rx_ofdm,
-                           struct statistics_rx_ht_phy *rx_ofdm_ht,
-                           struct statistics_rx_phy *rx_cck,
-                           struct statistics_tx *tx,
-                           struct statistics_bt_activity *bt_activity)
-{
-}
-#endif
-
-static int iwl_rx_statistics(struct iwl_priv *priv,
-                             struct iwl_rx_mem_buffer *rxb,
-                             struct iwl_device_cmd *cmd)
-{
-       unsigned long stamp = jiffies;
-       const int reg_recalib_period = 60;
-       int change;
-       struct iwl_rx_packet *pkt = rxb_addr(rxb);
-       u32 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
-       __le32 *flag;
-       struct statistics_general_common *common;
-       struct statistics_rx_non_phy *rx_non_phy;
-       struct statistics_rx_phy *rx_ofdm;
-       struct statistics_rx_ht_phy *rx_ofdm_ht;
-       struct statistics_rx_phy *rx_cck;
-       struct statistics_tx *tx;
-       struct statistics_bt_activity *bt_activity;
-
-       len -= sizeof(struct iwl_cmd_header); /* skip header */
-
-       IWL_DEBUG_RX(priv, "Statistics notification received (%d bytes).\n",
-                    len);
-
-       if (len == sizeof(struct iwl_bt_notif_statistics)) {
-               struct iwl_bt_notif_statistics *stats;
-               stats = &pkt->u.stats_bt;
-               flag = &stats->flag;
-               common = &stats->general.common;
-               rx_non_phy = &stats->rx.general.common;
-               rx_ofdm = &stats->rx.ofdm;
-               rx_ofdm_ht = &stats->rx.ofdm_ht;
-               rx_cck = &stats->rx.cck;
-               tx = &stats->tx;
-               bt_activity = &stats->general.activity;
-
-#ifdef CONFIG_IWLWIFI_DEBUGFS
-               /* handle this exception directly */
-               priv->statistics.num_bt_kills = stats->rx.general.num_bt_kills;
-               le32_add_cpu(&priv->statistics.accum_num_bt_kills,
-                            le32_to_cpu(stats->rx.general.num_bt_kills));
-#endif
-       } else if (len == sizeof(struct iwl_notif_statistics)) {
-               struct iwl_notif_statistics *stats;
-               stats = &pkt->u.stats;
-               flag = &stats->flag;
-               common = &stats->general.common;
-               rx_non_phy = &stats->rx.general;
-               rx_ofdm = &stats->rx.ofdm;
-               rx_ofdm_ht = &stats->rx.ofdm_ht;
-               rx_cck = &stats->rx.cck;
-               tx = &stats->tx;
-               bt_activity = NULL;
-       } else {
-               WARN_ONCE(1, "len %d doesn't match BT (%zu) or normal (%zu)\n",
-                         len, sizeof(struct iwl_bt_notif_statistics),
-                         sizeof(struct iwl_notif_statistics));
-               return 0;
-       }
-
-       change = common->temperature != priv->statistics.common.temperature ||
-                (*flag & STATISTICS_REPLY_FLG_HT40_MODE_MSK) !=
-                (priv->statistics.flag & STATISTICS_REPLY_FLG_HT40_MODE_MSK);
-
-       iwl_accumulative_statistics(priv, common, rx_non_phy, rx_ofdm,
-                                   rx_ofdm_ht, rx_cck, tx, bt_activity);
-
-       iwl_recover_from_statistics(priv, rx_ofdm, rx_ofdm_ht, tx, stamp);
-
-       priv->statistics.flag = *flag;
-       memcpy(&priv->statistics.common, common, sizeof(*common));
-       memcpy(&priv->statistics.rx_non_phy, rx_non_phy, sizeof(*rx_non_phy));
-       memcpy(&priv->statistics.rx_ofdm, rx_ofdm, sizeof(*rx_ofdm));
-       memcpy(&priv->statistics.rx_ofdm_ht, rx_ofdm_ht, sizeof(*rx_ofdm_ht));
-       memcpy(&priv->statistics.rx_cck, rx_cck, sizeof(*rx_cck));
-       memcpy(&priv->statistics.tx, tx, sizeof(*tx));
-#ifdef CONFIG_IWLWIFI_DEBUGFS
-       if (bt_activity)
-               memcpy(&priv->statistics.bt_activity, bt_activity,
-                       sizeof(*bt_activity));
-#endif
-
-       priv->rx_statistics_jiffies = stamp;
-
-       set_bit(STATUS_STATISTICS, &priv->shrd->status);
-
-       /* Reschedule the statistics timer to occur in
-        * reg_recalib_period seconds to ensure we get a
-        * thermal update even if the uCode doesn't give
-        * us one */
-       mod_timer(&priv->statistics_periodic, jiffies +
-                 msecs_to_jiffies(reg_recalib_period * 1000));
-
-       if (unlikely(!test_bit(STATUS_SCANNING, &priv->shrd->status)) &&
-           (pkt->hdr.cmd == STATISTICS_NOTIFICATION)) {
-               iwl_rx_calc_noise(priv);
-               queue_work(priv->shrd->workqueue, &priv->run_time_calib_work);
-       }
-       if (priv->cfg->lib->temperature && change)
-               priv->cfg->lib->temperature(priv);
-       return 0;
-}
-
-static int iwl_rx_reply_statistics(struct iwl_priv *priv,
-                                   struct iwl_rx_mem_buffer *rxb,
-                                   struct iwl_device_cmd *cmd)
-{
-       struct iwl_rx_packet *pkt = rxb_addr(rxb);
-
-       if (le32_to_cpu(pkt->u.stats.flag) & UCODE_STATISTICS_CLEAR_MSK) {
-#ifdef CONFIG_IWLWIFI_DEBUGFS
-               memset(&priv->accum_stats, 0,
-                       sizeof(priv->accum_stats));
-               memset(&priv->delta_stats, 0,
-                       sizeof(priv->delta_stats));
-               memset(&priv->max_delta_stats, 0,
-                       sizeof(priv->max_delta_stats));
-#endif
-               IWL_DEBUG_RX(priv, "Statistics have been cleared\n");
-       }
-       iwl_rx_statistics(priv, rxb, cmd);
-       return 0;
-}
-
-/* Handle notification from uCode that card's power state is changing
- * due to software, hardware, or critical temperature RFKILL */
-static int iwl_rx_card_state_notif(struct iwl_priv *priv,
-                                   struct iwl_rx_mem_buffer *rxb,
-                                   struct iwl_device_cmd *cmd)
-{
-       struct iwl_rx_packet *pkt = rxb_addr(rxb);
-       u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
-       unsigned long status = priv->shrd->status;
-
-       IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s CT:%s\n",
-                         (flags & HW_CARD_DISABLED) ? "Kill" : "On",
-                         (flags & SW_CARD_DISABLED) ? "Kill" : "On",
-                         (flags & CT_CARD_DISABLED) ?
-                         "Reached" : "Not reached");
-
-       if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
-                    CT_CARD_DISABLED)) {
-
-               iwl_write32(bus(priv), CSR_UCODE_DRV_GP1_SET,
-                           CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
-
-               iwl_write_direct32(bus(priv), HBUS_TARG_MBX_C,
-                                       HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
-
-               if (!(flags & RXON_CARD_DISABLED)) {
-                       iwl_write32(bus(priv), CSR_UCODE_DRV_GP1_CLR,
-                                   CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
-                       iwl_write_direct32(bus(priv), HBUS_TARG_MBX_C,
-                                       HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
-               }
-               if (flags & CT_CARD_DISABLED)
-                       iwl_tt_enter_ct_kill(priv);
-       }
-       if (!(flags & CT_CARD_DISABLED))
-               iwl_tt_exit_ct_kill(priv);
-
-       if (flags & HW_CARD_DISABLED)
-               set_bit(STATUS_RF_KILL_HW, &priv->shrd->status);
-       else
-               clear_bit(STATUS_RF_KILL_HW, &priv->shrd->status);
-
-
-       if (!(flags & RXON_CARD_DISABLED))
-               iwl_scan_cancel(priv);
-
-       if ((test_bit(STATUS_RF_KILL_HW, &status) !=
-            test_bit(STATUS_RF_KILL_HW, &priv->shrd->status)))
-               wiphy_rfkill_set_hw_state(priv->hw->wiphy,
-                       test_bit(STATUS_RF_KILL_HW, &priv->shrd->status));
-       else
-               wake_up(&priv->shrd->wait_command_queue);
-       return 0;
-}
-
-static int iwl_rx_missed_beacon_notif(struct iwl_priv *priv,
-                                      struct iwl_rx_mem_buffer *rxb,
-                                      struct iwl_device_cmd *cmd)
-
-{
-       struct iwl_rx_packet *pkt = rxb_addr(rxb);
-       struct iwl_missed_beacon_notif *missed_beacon;
-
-       missed_beacon = &pkt->u.missed_beacon;
-       if (le32_to_cpu(missed_beacon->consecutive_missed_beacons) >
-           priv->missed_beacon_threshold) {
-               IWL_DEBUG_CALIB(priv,
-                   "missed bcn cnsq %d totl %d rcd %d expctd %d\n",
-                   le32_to_cpu(missed_beacon->consecutive_missed_beacons),
-                   le32_to_cpu(missed_beacon->total_missed_becons),
-                   le32_to_cpu(missed_beacon->num_recvd_beacons),
-                   le32_to_cpu(missed_beacon->num_expected_beacons));
-               if (!test_bit(STATUS_SCANNING, &priv->shrd->status))
-                       iwl_init_sensitivity(priv);
-       }
-       return 0;
-}
-
-/* Cache phy data (Rx signal strength, etc) for HT frame (REPLY_RX_PHY_CMD).
- * This will be used later in iwl_rx_reply_rx() for REPLY_RX_MPDU_CMD. */
-static int iwl_rx_reply_rx_phy(struct iwl_priv *priv,
-                               struct iwl_rx_mem_buffer *rxb,
-                               struct iwl_device_cmd *cmd)
-{
-       struct iwl_rx_packet *pkt = rxb_addr(rxb);
-
-       priv->last_phy_res_valid = true;
-       memcpy(&priv->last_phy_res, pkt->u.raw,
-              sizeof(struct iwl_rx_phy_res));
-       return 0;
-}
-
-/*
- * returns non-zero if packet should be dropped
- */
-static int iwl_set_decrypted_flag(struct iwl_priv *priv,
-                                 struct ieee80211_hdr *hdr,
-                                 u32 decrypt_res,
-                                 struct ieee80211_rx_status *stats)
-{
-       u16 fc = le16_to_cpu(hdr->frame_control);
-
-       /*
-        * All contexts have the same setting here due to it being
-        * a module parameter, so OK to check any context.
-        */
-       if (priv->contexts[IWL_RXON_CTX_BSS].active.filter_flags &
-                                               RXON_FILTER_DIS_DECRYPT_MSK)
-               return 0;
-
-       if (!(fc & IEEE80211_FCTL_PROTECTED))
-               return 0;
-
-       IWL_DEBUG_RX(priv, "decrypt_res:0x%x\n", decrypt_res);
-       switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
-       case RX_RES_STATUS_SEC_TYPE_TKIP:
-               /* The uCode has got a bad phase 1 Key, pushes the packet.
-                * Decryption will be done in SW. */
-               if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
-                   RX_RES_STATUS_BAD_KEY_TTAK)
-                       break;
-
-       case RX_RES_STATUS_SEC_TYPE_WEP:
-               if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
-                   RX_RES_STATUS_BAD_ICV_MIC) {
-                       /* bad ICV, the packet is destroyed since the
-                        * decryption is inplace, drop it */
-                       IWL_DEBUG_RX(priv, "Packet destroyed\n");
-                       return -1;
-               }
-       case RX_RES_STATUS_SEC_TYPE_CCMP:
-               if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
-                   RX_RES_STATUS_DECRYPT_OK) {
-                       IWL_DEBUG_RX(priv, "hw decrypt successfully!!!\n");
-                       stats->flag |= RX_FLAG_DECRYPTED;
-               }
-               break;
-
-       default:
-               break;
-       }
-       return 0;
-}
-
-static void iwl_pass_packet_to_mac80211(struct iwl_priv *priv,
-                                       struct ieee80211_hdr *hdr,
-                                       u16 len,
-                                       u32 ampdu_status,
-                                       struct iwl_rx_mem_buffer *rxb,
-                                       struct ieee80211_rx_status *stats)
-{
-       struct sk_buff *skb;
-       __le16 fc = hdr->frame_control;
-       struct iwl_rxon_context *ctx;
-
-       /* We only process data packets if the interface is open */
-       if (unlikely(!priv->is_open)) {
-               IWL_DEBUG_DROP_LIMIT(priv,
-                   "Dropping packet while interface is not open.\n");
-               return;
-       }
-
-       /* In case of HW accelerated crypto and bad decryption, drop */
-       if (!iwlagn_mod_params.sw_crypto &&
-           iwl_set_decrypted_flag(priv, hdr, ampdu_status, stats))
-               return;
-
-       skb = dev_alloc_skb(128);
-       if (!skb) {
-               IWL_ERR(priv, "dev_alloc_skb failed\n");
-               return;
-       }
-
-       skb_add_rx_frag(skb, 0, rxb->page, (void *)hdr - rxb_addr(rxb), len);
-
-       iwl_update_stats(priv, false, fc, len);
-
-       /*
-       * Wake any queues that were stopped due to a passive channel tx
-       * failure. This can happen because the regulatory enforcement in
-       * the device waits for a beacon before allowing transmission,
-       * sometimes even after already having transmitted frames for the
-       * association because the new RXON may reset the information.
-       */
-       if (unlikely(ieee80211_is_beacon(fc))) {
-               for_each_context(priv, ctx) {
-                       if (!ctx->last_tx_rejected)
-                               continue;
-                       if (compare_ether_addr(hdr->addr3,
-                                              ctx->active.bssid_addr))
-                               continue;
-                       ctx->last_tx_rejected = false;
-                       iwl_trans_wake_any_queue(trans(priv), ctx->ctxid);
-               }
-       }
-
-       memcpy(IEEE80211_SKB_RXCB(skb), stats, sizeof(*stats));
-
-       ieee80211_rx(priv->hw, skb);
-       rxb->page = NULL;
-}
-
-static u32 iwl_translate_rx_status(struct iwl_priv *priv, u32 decrypt_in)
-{
-       u32 decrypt_out = 0;
-
-       if ((decrypt_in & RX_RES_STATUS_STATION_FOUND) ==
-                                       RX_RES_STATUS_STATION_FOUND)
-               decrypt_out |= (RX_RES_STATUS_STATION_FOUND |
-                               RX_RES_STATUS_NO_STATION_INFO_MISMATCH);
-
-       decrypt_out |= (decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK);
-
-       /* packet was not encrypted */
-       if ((decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK) ==
-                                       RX_RES_STATUS_SEC_TYPE_NONE)
-               return decrypt_out;
-
-       /* packet was encrypted with unknown alg */
-       if ((decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK) ==
-                                       RX_RES_STATUS_SEC_TYPE_ERR)
-               return decrypt_out;
-
-       /* decryption was not done in HW */
-       if ((decrypt_in & RX_MPDU_RES_STATUS_DEC_DONE_MSK) !=
-                                       RX_MPDU_RES_STATUS_DEC_DONE_MSK)
-               return decrypt_out;
-
-       switch (decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK) {
-
-       case RX_RES_STATUS_SEC_TYPE_CCMP:
-               /* alg is CCM: check MIC only */
-               if (!(decrypt_in & RX_MPDU_RES_STATUS_MIC_OK))
-                       /* Bad MIC */
-                       decrypt_out |= RX_RES_STATUS_BAD_ICV_MIC;
-               else
-                       decrypt_out |= RX_RES_STATUS_DECRYPT_OK;
-
-               break;
-
-       case RX_RES_STATUS_SEC_TYPE_TKIP:
-               if (!(decrypt_in & RX_MPDU_RES_STATUS_TTAK_OK)) {
-                       /* Bad TTAK */
-                       decrypt_out |= RX_RES_STATUS_BAD_KEY_TTAK;
-                       break;
-               }
-               /* fall through if TTAK OK */
-       default:
-               if (!(decrypt_in & RX_MPDU_RES_STATUS_ICV_OK))
-                       decrypt_out |= RX_RES_STATUS_BAD_ICV_MIC;
-               else
-                       decrypt_out |= RX_RES_STATUS_DECRYPT_OK;
-               break;
-       }
-
-       IWL_DEBUG_RX(priv, "decrypt_in:0x%x  decrypt_out = 0x%x\n",
-                                       decrypt_in, decrypt_out);
-
-       return decrypt_out;
-}
-
-/* Calc max signal level (dBm) among 3 possible receivers */
-static int iwlagn_calc_rssi(struct iwl_priv *priv,
-                            struct iwl_rx_phy_res *rx_resp)
-{
-       /* data from PHY/DSP regarding signal strength, etc.,
-        *   contents are always there, not configurable by host
-        */
-       struct iwlagn_non_cfg_phy *ncphy =
-               (struct iwlagn_non_cfg_phy *)rx_resp->non_cfg_phy_buf;
-       u32 val, rssi_a, rssi_b, rssi_c, max_rssi;
-       u8 agc;
-
-       val  = le32_to_cpu(ncphy->non_cfg_phy[IWLAGN_RX_RES_AGC_IDX]);
-       agc = (val & IWLAGN_OFDM_AGC_MSK) >> IWLAGN_OFDM_AGC_BIT_POS;
-
-       /* Find max rssi among 3 possible receivers.
-        * These values are measured by the digital signal processor (DSP).
-        * They should stay fairly constant even as the signal strength varies,
-        *   if the radio's automatic gain control (AGC) is working right.
-        * AGC value (see below) will provide the "interesting" info.
-        */
-       val = le32_to_cpu(ncphy->non_cfg_phy[IWLAGN_RX_RES_RSSI_AB_IDX]);
-       rssi_a = (val & IWLAGN_OFDM_RSSI_INBAND_A_BITMSK) >>
-               IWLAGN_OFDM_RSSI_A_BIT_POS;
-       rssi_b = (val & IWLAGN_OFDM_RSSI_INBAND_B_BITMSK) >>
-               IWLAGN_OFDM_RSSI_B_BIT_POS;
-       val = le32_to_cpu(ncphy->non_cfg_phy[IWLAGN_RX_RES_RSSI_C_IDX]);
-       rssi_c = (val & IWLAGN_OFDM_RSSI_INBAND_C_BITMSK) >>
-               IWLAGN_OFDM_RSSI_C_BIT_POS;
-
-       max_rssi = max_t(u32, rssi_a, rssi_b);
-       max_rssi = max_t(u32, max_rssi, rssi_c);
-
-       IWL_DEBUG_STATS(priv, "Rssi In A %d B %d C %d Max %d AGC dB %d\n",
-               rssi_a, rssi_b, rssi_c, max_rssi, agc);
-
-       /* dBm = max_rssi dB - agc dB - constant.
-        * Higher AGC (higher radio gain) means lower signal. */
-       return max_rssi - agc - IWLAGN_RSSI_OFFSET;
-}
-
-/* Called for REPLY_RX (legacy ABG frames), or
- * REPLY_RX_MPDU_CMD (HT high-throughput N frames). */
-static int iwl_rx_reply_rx(struct iwl_priv *priv,
-                           struct iwl_rx_mem_buffer *rxb,
-                           struct iwl_device_cmd *cmd)
-{
-       struct ieee80211_hdr *header;
-       struct ieee80211_rx_status rx_status;
-       struct iwl_rx_packet *pkt = rxb_addr(rxb);
-       struct iwl_rx_phy_res *phy_res;
-       __le32 rx_pkt_status;
-       struct iwl_rx_mpdu_res_start *amsdu;
-       u32 len;
-       u32 ampdu_status;
-       u32 rate_n_flags;
-
-       /**
-        * REPLY_RX and REPLY_RX_MPDU_CMD are handled differently.
-        *      REPLY_RX: physical layer info is in this buffer
-        *      REPLY_RX_MPDU_CMD: physical layer info was sent in separate
-        *              command and cached in priv->last_phy_res
-        *
-        * Here we set up local variables depending on which command is
-        * received.
-        */
-       if (pkt->hdr.cmd == REPLY_RX) {
-               phy_res = (struct iwl_rx_phy_res *)pkt->u.raw;
-               header = (struct ieee80211_hdr *)(pkt->u.raw + sizeof(*phy_res)
-                               + phy_res->cfg_phy_cnt);
-
-               len = le16_to_cpu(phy_res->byte_count);
-               rx_pkt_status = *(__le32 *)(pkt->u.raw + sizeof(*phy_res) +
-                               phy_res->cfg_phy_cnt + len);
-               ampdu_status = le32_to_cpu(rx_pkt_status);
-       } else {
-               if (!priv->last_phy_res_valid) {
-                       IWL_ERR(priv, "MPDU frame without cached PHY data\n");
-                       return 0;
-               }
-               phy_res = &priv->last_phy_res;
-               amsdu = (struct iwl_rx_mpdu_res_start *)pkt->u.raw;
-               header = (struct ieee80211_hdr *)(pkt->u.raw + sizeof(*amsdu));
-               len = le16_to_cpu(amsdu->byte_count);
-               rx_pkt_status = *(__le32 *)(pkt->u.raw + sizeof(*amsdu) + len);
-               ampdu_status = iwl_translate_rx_status(priv,
-                                               le32_to_cpu(rx_pkt_status));
-       }
-
-       if ((unlikely(phy_res->cfg_phy_cnt > 20))) {
-               IWL_DEBUG_DROP(priv, "dsp size out of range [0,20]: %d/n",
-                               phy_res->cfg_phy_cnt);
-               return 0;
-       }
-
-       if (!(rx_pkt_status & RX_RES_STATUS_NO_CRC32_ERROR) ||
-           !(rx_pkt_status & RX_RES_STATUS_NO_RXE_OVERFLOW)) {
-               IWL_DEBUG_RX(priv, "Bad CRC or FIFO: 0x%08X.\n",
-                               le32_to_cpu(rx_pkt_status));
-               return 0;
-       }
-
-       /* This will be used in several places later */
-       rate_n_flags = le32_to_cpu(phy_res->rate_n_flags);
-
-       /* rx_status carries information about the packet to mac80211 */
-       rx_status.mactime = le64_to_cpu(phy_res->timestamp);
-       rx_status.band = (phy_res->phy_flags & RX_RES_PHY_FLAGS_BAND_24_MSK) ?
-                               IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ;
-       rx_status.freq =
-               ieee80211_channel_to_frequency(le16_to_cpu(phy_res->channel),
-                                              rx_status.band);
-       rx_status.rate_idx =
-               iwlagn_hwrate_to_mac80211_idx(rate_n_flags, rx_status.band);
-       rx_status.flag = 0;
-
-       /* TSF isn't reliable. In order to allow smooth user experience,
-        * this W/A doesn't propagate it to the mac80211 */
-       /*rx_status.flag |= RX_FLAG_MACTIME_MPDU;*/
-
-       priv->ucode_beacon_time = le32_to_cpu(phy_res->beacon_time_stamp);
-
-       /* Find max signal strength (dBm) among 3 antenna/receiver chains */
-       rx_status.signal = iwlagn_calc_rssi(priv, phy_res);
-
-       iwl_dbg_log_rx_data_frame(priv, len, header);
-       IWL_DEBUG_STATS_LIMIT(priv, "Rssi %d, TSF %llu\n",
-               rx_status.signal, (unsigned long long)rx_status.mactime);
-
-       /*
-        * "antenna number"
-        *
-        * It seems that the antenna field in the phy flags value
-        * is actually a bit field. This is undefined by radiotap,
-        * it wants an actual antenna number but I always get "7"
-        * for most legacy frames I receive indicating that the
-        * same frame was received on all three RX chains.
-        *
-        * I think this field should be removed in favor of a
-        * new 802.11n radiotap field "RX chains" that is defined
-        * as a bitmask.
-        */
-       rx_status.antenna =
-               (le16_to_cpu(phy_res->phy_flags) & RX_RES_PHY_FLAGS_ANTENNA_MSK)
-               >> RX_RES_PHY_FLAGS_ANTENNA_POS;
-
-       /* set the preamble flag if appropriate */
-       if (phy_res->phy_flags & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK)
-               rx_status.flag |= RX_FLAG_SHORTPRE;
-
-       /* Set up the HT phy flags */
-       if (rate_n_flags & RATE_MCS_HT_MSK)
-               rx_status.flag |= RX_FLAG_HT;
-       if (rate_n_flags & RATE_MCS_HT40_MSK)
-               rx_status.flag |= RX_FLAG_40MHZ;
-       if (rate_n_flags & RATE_MCS_SGI_MSK)
-               rx_status.flag |= RX_FLAG_SHORT_GI;
-
-       iwl_pass_packet_to_mac80211(priv, header, len, ampdu_status,
-                                   rxb, &rx_status);
-       return 0;
-}
-
-/**
- * iwl_setup_rx_handlers - Initialize Rx handler callbacks
- *
- * Setup the RX handlers for each of the reply types sent from the uCode
- * to the host.
- */
-void iwl_setup_rx_handlers(struct iwl_priv *priv)
-{
-       int (**handlers)(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb,
-                              struct iwl_device_cmd *cmd);
-
-       handlers = priv->rx_handlers;
-
-       handlers[REPLY_ERROR]                   = iwl_rx_reply_error;
-       handlers[CHANNEL_SWITCH_NOTIFICATION]   = iwl_rx_csa;
-       handlers[SPECTRUM_MEASURE_NOTIFICATION] = iwl_rx_spectrum_measure_notif;
-       handlers[PM_SLEEP_NOTIFICATION]         = iwl_rx_pm_sleep_notif;
-       handlers[PM_DEBUG_STATISTIC_NOTIFIC]    = iwl_rx_pm_debug_statistics_notif;
-       handlers[BEACON_NOTIFICATION]           = iwl_rx_beacon_notif;
-       handlers[REPLY_ADD_STA]                 = iwl_add_sta_callback;
-
-       /*
-        * The same handler is used for both the REPLY to a discrete
-        * statistics request from the host as well as for the periodic
-        * statistics notifications (after received beacons) from the uCode.
-        */
-       handlers[REPLY_STATISTICS_CMD]          = iwl_rx_reply_statistics;
-       handlers[STATISTICS_NOTIFICATION]       = iwl_rx_statistics;
-
-       iwl_setup_rx_scan_handlers(priv);
-
-       handlers[CARD_STATE_NOTIFICATION]       = iwl_rx_card_state_notif;
-       handlers[MISSED_BEACONS_NOTIFICATION]   = iwl_rx_missed_beacon_notif;
-
-       /* Rx handlers */
-       handlers[REPLY_RX_PHY_CMD]              = iwl_rx_reply_rx_phy;
-       handlers[REPLY_RX_MPDU_CMD]             = iwl_rx_reply_rx;
-
-       /* block ack */
-       handlers[REPLY_COMPRESSED_BA]           = iwlagn_rx_reply_compressed_ba;
-
-       /* init calibration handlers */
-       priv->rx_handlers[CALIBRATION_RES_NOTIFICATION] =
-                                       iwlagn_rx_calib_result;
-       priv->rx_handlers[REPLY_TX] = iwlagn_rx_reply_tx;
-
-       /* set up notification wait support */
-       spin_lock_init(&priv->notif_wait_lock);
-       INIT_LIST_HEAD(&priv->notif_waits);
-       init_waitqueue_head(&priv->notif_waitq);
-
-       /* Set up BT Rx handlers */
-       if (priv->cfg->lib->bt_rx_handler_setup)
-               priv->cfg->lib->bt_rx_handler_setup(priv);
-
-}
-
-int iwl_rx_dispatch(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb,
-                    struct iwl_device_cmd *cmd)
-{
-       struct iwl_rx_packet *pkt = rxb_addr(rxb);
-       int err = 0;
-
-       /*
-        * Do the notification wait before RX handlers so
-        * even if the RX handler consumes the RXB we have
-        * access to it in the notification wait entry.
-        */
-       if (!list_empty(&priv->notif_waits)) {
-               struct iwl_notification_wait *w;
-
-               spin_lock(&priv->notif_wait_lock);
-               list_for_each_entry(w, &priv->notif_waits, list) {
-                       if (w->cmd != pkt->hdr.cmd)
-                               continue;
-                       IWL_DEBUG_RX(priv,
-                               "Notif: %s, 0x%02x - wake the callers up\n",
-                               get_cmd_string(pkt->hdr.cmd),
-                               pkt->hdr.cmd);
-                       w->triggered = true;
-                       if (w->fn)
-                               w->fn(priv, pkt, w->fn_data);
-               }
-               spin_unlock(&priv->notif_wait_lock);
-
-               wake_up_all(&priv->notif_waitq);
-       }
-
-       if (priv->pre_rx_handler)
-               priv->pre_rx_handler(priv, rxb);
-
-       /* Based on type of command response or notification,
-        *   handle those that need handling via function in
-        *   rx_handlers table.  See iwl_setup_rx_handlers() */
-       if (priv->rx_handlers[pkt->hdr.cmd]) {
-               priv->rx_handlers_stats[pkt->hdr.cmd]++;
-               err = priv->rx_handlers[pkt->hdr.cmd] (priv, rxb, cmd);
-       } else {
-               /* No handling needed */
-               IWL_DEBUG_RX(priv,
-                       "No handler needed for %s, 0x%02x\n",
-                       get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
-       }
-       return err;
-}