1 /******************************************************************************
3 * Copyright(c) 2003 - 2013 Intel Corporation. All rights reserved.
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
28 *****************************************************************************/
29 #include <linux/kernel.h>
30 #include <linux/module.h>
31 #include <linux/init.h>
32 #include <linux/slab.h>
33 #include <linux/dma-mapping.h>
34 #include <linux/delay.h>
35 #include <linux/sched.h>
36 #include <linux/skbuff.h>
37 #include <linux/netdevice.h>
38 #include <linux/etherdevice.h>
39 #include <linux/if_arp.h>
41 #include <net/ieee80211_radiotap.h>
42 #include <net/mac80211.h>
44 #include <asm/div64.h>
47 #include "iwl-trans.h"
48 #include "iwl-op-mode.h"
49 #include "iwl-modparams.h"
55 /*****************************************************************************
57 * mac80211 entry point functions
59 *****************************************************************************/
61 static const struct ieee80211_iface_limit iwlagn_sta_ap_limits[] = {
64 .types = BIT(NL80211_IFTYPE_STATION),
68 .types = BIT(NL80211_IFTYPE_AP),
72 static const struct ieee80211_iface_limit iwlagn_2sta_limits[] = {
75 .types = BIT(NL80211_IFTYPE_STATION),
79 static const struct ieee80211_iface_limit iwlagn_p2p_sta_go_limits[] = {
82 .types = BIT(NL80211_IFTYPE_STATION),
86 .types = BIT(NL80211_IFTYPE_P2P_GO) |
87 BIT(NL80211_IFTYPE_AP),
91 static const struct ieee80211_iface_limit iwlagn_p2p_2sta_limits[] = {
94 .types = BIT(NL80211_IFTYPE_STATION),
98 .types = BIT(NL80211_IFTYPE_P2P_CLIENT),
102 static const struct ieee80211_iface_combination
103 iwlagn_iface_combinations_dualmode[] = {
104 { .num_different_channels = 1,
106 .beacon_int_infra_match = true,
107 .limits = iwlagn_sta_ap_limits,
108 .n_limits = ARRAY_SIZE(iwlagn_sta_ap_limits),
110 { .num_different_channels = 1,
112 .limits = iwlagn_2sta_limits,
113 .n_limits = ARRAY_SIZE(iwlagn_2sta_limits),
117 static const struct ieee80211_iface_combination
118 iwlagn_iface_combinations_p2p[] = {
119 { .num_different_channels = 1,
121 .beacon_int_infra_match = true,
122 .limits = iwlagn_p2p_sta_go_limits,
123 .n_limits = ARRAY_SIZE(iwlagn_p2p_sta_go_limits),
125 { .num_different_channels = 1,
127 .limits = iwlagn_p2p_2sta_limits,
128 .n_limits = ARRAY_SIZE(iwlagn_p2p_2sta_limits),
133 * Not a mac80211 entry point function, but it fits in with all the
134 * other mac80211 functions grouped here.
136 int iwlagn_mac_setup_register(struct iwl_priv *priv,
137 const struct iwl_ucode_capabilities *capa)
140 struct ieee80211_hw *hw = priv->hw;
141 struct iwl_rxon_context *ctx;
143 hw->rate_control_algorithm = "iwl-agn-rs";
145 /* Tell mac80211 our characteristics */
146 hw->flags = IEEE80211_HW_SIGNAL_DBM |
147 IEEE80211_HW_AMPDU_AGGREGATION |
148 IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC |
149 IEEE80211_HW_SPECTRUM_MGMT |
150 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
151 IEEE80211_HW_QUEUE_CONTROL |
152 IEEE80211_HW_SUPPORTS_PS |
153 IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
154 IEEE80211_HW_WANT_MONITOR_VIF;
156 hw->offchannel_tx_hw_queue = IWL_AUX_QUEUE;
157 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FMT;
160 * Including the following line will crash some AP's. This
161 * workaround removes the stimulus which causes the crash until
162 * the AP software can be fixed.
163 hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
166 if (priv->nvm_data->sku_cap_11n_enable)
167 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
168 IEEE80211_HW_SUPPORTS_STATIC_SMPS;
171 * Enable 11w if advertised by firmware and software crypto
172 * is not enabled (as the firmware will interpret some mgmt
173 * packets, so enabling it with software crypto isn't safe)
175 if (priv->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
176 !iwlwifi_mod_params.sw_crypto)
177 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
179 hw->sta_data_size = sizeof(struct iwl_station_priv);
180 hw->vif_data_size = sizeof(struct iwl_vif_priv);
182 for_each_context(priv, ctx) {
183 hw->wiphy->interface_modes |= ctx->interface_modes;
184 hw->wiphy->interface_modes |= ctx->exclusive_interface_modes;
187 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
189 if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)) {
190 hw->wiphy->iface_combinations = iwlagn_iface_combinations_p2p;
191 hw->wiphy->n_iface_combinations =
192 ARRAY_SIZE(iwlagn_iface_combinations_p2p);
193 } else if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
194 hw->wiphy->iface_combinations =
195 iwlagn_iface_combinations_dualmode;
196 hw->wiphy->n_iface_combinations =
197 ARRAY_SIZE(iwlagn_iface_combinations_dualmode);
200 hw->wiphy->max_remain_on_channel_duration = 500;
202 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
203 WIPHY_FLAG_DISABLE_BEACON_HINTS |
206 #ifdef CONFIG_PM_SLEEP
207 if (priv->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
208 priv->trans->ops->d3_suspend &&
209 priv->trans->ops->d3_resume &&
210 device_can_wakeup(priv->trans->dev)) {
211 hw->wiphy->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
212 WIPHY_WOWLAN_DISCONNECT |
213 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
214 WIPHY_WOWLAN_RFKILL_RELEASE;
215 if (!iwlwifi_mod_params.sw_crypto)
216 hw->wiphy->wowlan.flags |=
217 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
218 WIPHY_WOWLAN_GTK_REKEY_FAILURE;
220 hw->wiphy->wowlan.n_patterns = IWLAGN_WOWLAN_MAX_PATTERNS;
221 hw->wiphy->wowlan.pattern_min_len =
222 IWLAGN_WOWLAN_MIN_PATTERN_LEN;
223 hw->wiphy->wowlan.pattern_max_len =
224 IWLAGN_WOWLAN_MAX_PATTERN_LEN;
228 if (iwlwifi_mod_params.power_save)
229 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
231 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
233 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
234 /* we create the 802.11 header and a max-length SSID element */
235 hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 34;
238 * We don't use all queues: 4 and 9 are unused and any
239 * aggregation queue gets mapped down to the AC queue.
241 hw->queues = IWLAGN_FIRST_AMPDU_QUEUE;
243 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
245 if (priv->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
246 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
247 &priv->nvm_data->bands[IEEE80211_BAND_2GHZ];
248 if (priv->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
249 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
250 &priv->nvm_data->bands[IEEE80211_BAND_5GHZ];
252 hw->wiphy->hw_version = priv->trans->hw_id;
256 ret = ieee80211_register_hw(priv->hw);
258 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
262 priv->mac80211_registered = 1;
267 void iwlagn_mac_unregister(struct iwl_priv *priv)
269 if (!priv->mac80211_registered)
272 ieee80211_unregister_hw(priv->hw);
273 priv->mac80211_registered = 0;
276 static int __iwl_up(struct iwl_priv *priv)
278 struct iwl_rxon_context *ctx;
281 lockdep_assert_held(&priv->mutex);
283 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
284 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
288 for_each_context(priv, ctx) {
289 ret = iwlagn_alloc_bcast_station(priv, ctx);
291 iwl_dealloc_bcast_stations(priv);
296 ret = iwl_run_init_ucode(priv);
298 IWL_ERR(priv, "Failed to run INIT ucode: %d\n", ret);
302 ret = iwl_load_ucode_wait_alive(priv, IWL_UCODE_REGULAR);
304 IWL_ERR(priv, "Failed to start RT ucode: %d\n", ret);
308 ret = iwl_alive_start(priv);
314 set_bit(STATUS_EXIT_PENDING, &priv->status);
316 clear_bit(STATUS_EXIT_PENDING, &priv->status);
318 IWL_ERR(priv, "Unable to initialize device.\n");
322 static int iwlagn_mac_start(struct ieee80211_hw *hw)
324 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
327 IWL_DEBUG_MAC80211(priv, "enter\n");
329 /* we should be verifying the device is ready to be opened */
330 mutex_lock(&priv->mutex);
331 ret = __iwl_up(priv);
332 mutex_unlock(&priv->mutex);
336 IWL_DEBUG_INFO(priv, "Start UP work done.\n");
338 /* Now we should be done, and the READY bit should be set. */
339 if (WARN_ON(!test_bit(STATUS_READY, &priv->status)))
342 iwlagn_led_enable(priv);
345 IWL_DEBUG_MAC80211(priv, "leave\n");
349 static void iwlagn_mac_stop(struct ieee80211_hw *hw)
351 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
353 IWL_DEBUG_MAC80211(priv, "enter\n");
360 mutex_lock(&priv->mutex);
362 mutex_unlock(&priv->mutex);
364 iwl_cancel_deferred_work(priv);
366 flush_workqueue(priv->workqueue);
368 /* User space software may expect getting rfkill changes
369 * even if interface is down, trans->down will leave the RF
370 * kill interrupt enabled
372 iwl_trans_stop_hw(priv->trans, false);
374 IWL_DEBUG_MAC80211(priv, "leave\n");
377 static void iwlagn_mac_set_rekey_data(struct ieee80211_hw *hw,
378 struct ieee80211_vif *vif,
379 struct cfg80211_gtk_rekey_data *data)
381 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
383 if (iwlwifi_mod_params.sw_crypto)
386 IWL_DEBUG_MAC80211(priv, "enter\n");
387 mutex_lock(&priv->mutex);
389 if (priv->contexts[IWL_RXON_CTX_BSS].vif != vif)
392 memcpy(priv->kek, data->kek, NL80211_KEK_LEN);
393 memcpy(priv->kck, data->kck, NL80211_KCK_LEN);
395 cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr));
396 priv->have_rekey_data = true;
399 mutex_unlock(&priv->mutex);
400 IWL_DEBUG_MAC80211(priv, "leave\n");
403 #ifdef CONFIG_PM_SLEEP
405 static int iwlagn_mac_suspend(struct ieee80211_hw *hw,
406 struct cfg80211_wowlan *wowlan)
408 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
409 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
412 if (WARN_ON(!wowlan))
415 IWL_DEBUG_MAC80211(priv, "enter\n");
416 mutex_lock(&priv->mutex);
418 /* Don't attempt WoWLAN when not associated, tear down instead. */
419 if (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION ||
420 !iwl_is_associated_ctx(ctx)) {
425 ret = iwlagn_suspend(priv, wowlan);
429 iwl_trans_d3_suspend(priv->trans);
434 priv->wowlan = false;
435 iwlagn_prepare_restart(priv);
436 ieee80211_restart_hw(priv->hw);
438 mutex_unlock(&priv->mutex);
439 IWL_DEBUG_MAC80211(priv, "leave\n");
444 struct iwl_resume_data {
445 struct iwl_priv *priv;
446 struct iwlagn_wowlan_status *cmd;
450 static bool iwl_resume_status_fn(struct iwl_notif_wait_data *notif_wait,
451 struct iwl_rx_packet *pkt, void *data)
453 struct iwl_resume_data *resume_data = data;
454 struct iwl_priv *priv = resume_data->priv;
455 u32 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
457 if (len - 4 != sizeof(*resume_data->cmd)) {
458 IWL_ERR(priv, "rx wrong size data\n");
461 memcpy(resume_data->cmd, pkt->data, sizeof(*resume_data->cmd));
462 resume_data->valid = true;
467 static int iwlagn_mac_resume(struct ieee80211_hw *hw)
469 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
470 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
471 struct ieee80211_vif *vif;
474 enum iwl_d3_status d3_status;
475 struct error_table_start {
476 /* cf. struct iwl_error_event_table */
480 struct iwl_notification_wait status_wait;
481 static const u8 status_cmd[] = {
482 REPLY_WOWLAN_GET_STATUS,
484 struct iwlagn_wowlan_status status_data = {};
485 struct iwl_resume_data resume_data = {
490 struct cfg80211_wowlan_wakeup wakeup = {
493 #ifdef CONFIG_IWLWIFI_DEBUGFS
494 const struct fw_img *img;
497 IWL_DEBUG_MAC80211(priv, "enter\n");
498 mutex_lock(&priv->mutex);
500 /* we'll clear ctx->vif during iwlagn_prepare_restart() */
503 ret = iwl_trans_d3_resume(priv->trans, &d3_status);
507 if (d3_status != IWL_D3_STATUS_ALIVE) {
508 IWL_INFO(priv, "Device was reset during suspend\n");
512 base = priv->device_pointers.error_event_table;
513 if (!iwlagn_hw_valid_rtc_data_addr(base)) {
514 IWL_WARN(priv, "Invalid error table during resume!\n");
518 iwl_trans_read_mem_bytes(priv->trans, base,
519 &err_info, sizeof(err_info));
521 if (err_info.valid) {
522 IWL_INFO(priv, "error table is valid (%d, 0x%x)\n",
523 err_info.valid, err_info.error_id);
524 if (err_info.error_id == RF_KILL_INDICATOR_FOR_WOWLAN) {
525 wakeup.rfkill_release = true;
526 ieee80211_report_wowlan_wakeup(vif, &wakeup,
532 #ifdef CONFIG_IWLWIFI_DEBUGFS
533 img = &priv->fw->img[IWL_UCODE_WOWLAN];
534 if (!priv->wowlan_sram)
536 kzalloc(img->sec[IWL_UCODE_SECTION_DATA].len,
539 if (priv->wowlan_sram)
540 iwl_trans_read_mem(priv->trans, 0x800000,
542 img->sec[IWL_UCODE_SECTION_DATA].len / 4);
546 * This is very strange. The GET_STATUS command is sent but the device
547 * doesn't reply properly, it seems it doesn't close the RBD so one is
548 * always left open ... As a result, we need to send another command
549 * and have to reset the driver afterwards. As we need to switch to
550 * runtime firmware again that'll happen.
553 iwl_init_notification_wait(&priv->notif_wait, &status_wait, status_cmd,
554 ARRAY_SIZE(status_cmd), iwl_resume_status_fn,
557 iwl_dvm_send_cmd_pdu(priv, REPLY_WOWLAN_GET_STATUS, CMD_ASYNC, 0, NULL);
558 iwl_dvm_send_cmd_pdu(priv, REPLY_ECHO, CMD_ASYNC, 0, NULL);
559 /* an RBD is left open in the firmware now! */
561 ret = iwl_wait_notification(&priv->notif_wait, &status_wait, HZ/5);
565 if (resume_data.valid && priv->contexts[IWL_RXON_CTX_BSS].vif) {
566 u32 reasons = le32_to_cpu(status_data.wakeup_reason);
567 struct cfg80211_wowlan_wakeup *wakeup_report;
569 IWL_INFO(priv, "WoWLAN wakeup reason(s): 0x%.8x\n", reasons);
572 if (reasons & IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET)
573 wakeup.magic_pkt = true;
574 if (reasons & IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH)
575 wakeup.pattern_idx = status_data.pattern_number;
576 if (reasons & (IWLAGN_WOWLAN_WAKEUP_BEACON_MISS |
577 IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE))
578 wakeup.disconnect = true;
579 if (reasons & IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL)
580 wakeup.gtk_rekey_failure = true;
581 if (reasons & IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ)
582 wakeup.eap_identity_req = true;
583 if (reasons & IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE)
584 wakeup.four_way_handshake = true;
585 wakeup_report = &wakeup;
587 wakeup_report = NULL;
590 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
593 priv->wowlan = false;
595 iwlagn_prepare_restart(priv);
597 memset((void *)&ctx->active, 0, sizeof(ctx->active));
598 iwl_connection_init_rx_config(priv, ctx);
599 iwlagn_set_rxon_chain(priv, ctx);
602 mutex_unlock(&priv->mutex);
603 IWL_DEBUG_MAC80211(priv, "leave\n");
605 ieee80211_resume_disconnect(vif);
610 static void iwlagn_mac_set_wakeup(struct ieee80211_hw *hw, bool enabled)
612 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
614 device_set_wakeup_enable(priv->trans->dev, enabled);
618 static void iwlagn_mac_tx(struct ieee80211_hw *hw,
619 struct ieee80211_tx_control *control,
622 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
624 if (iwlagn_tx_skb(priv, control->sta, skb))
625 ieee80211_free_txskb(hw, skb);
628 static void iwlagn_mac_update_tkip_key(struct ieee80211_hw *hw,
629 struct ieee80211_vif *vif,
630 struct ieee80211_key_conf *keyconf,
631 struct ieee80211_sta *sta,
632 u32 iv32, u16 *phase1key)
634 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
636 iwl_update_tkip_key(priv, vif, keyconf, sta, iv32, phase1key);
639 static int iwlagn_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
640 struct ieee80211_vif *vif,
641 struct ieee80211_sta *sta,
642 struct ieee80211_key_conf *key)
644 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
645 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
646 struct iwl_rxon_context *ctx = vif_priv->ctx;
648 bool is_default_wep_key = false;
650 IWL_DEBUG_MAC80211(priv, "enter\n");
652 if (iwlwifi_mod_params.sw_crypto) {
653 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
657 switch (key->cipher) {
658 case WLAN_CIPHER_SUITE_TKIP:
659 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
661 case WLAN_CIPHER_SUITE_CCMP:
662 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
669 * We could program these keys into the hardware as well, but we
670 * don't expect much multicast traffic in IBSS and having keys
671 * for more stations is probably more useful.
673 * Mark key TX-only and return 0.
675 if (vif->type == NL80211_IFTYPE_ADHOC &&
676 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
677 key->hw_key_idx = WEP_INVALID_OFFSET;
681 /* If they key was TX-only, accept deletion */
682 if (cmd == DISABLE_KEY && key->hw_key_idx == WEP_INVALID_OFFSET)
685 mutex_lock(&priv->mutex);
686 iwl_scan_cancel_timeout(priv, 100);
688 BUILD_BUG_ON(WEP_INVALID_OFFSET == IWLAGN_HW_KEY_DEFAULT);
691 * If we are getting WEP group key and we didn't receive any key mapping
692 * so far, we are in legacy wep mode (group key only), otherwise we are
694 * In legacy wep mode, we use another host command to the uCode.
696 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
697 key->cipher == WLAN_CIPHER_SUITE_WEP104) && !sta) {
699 is_default_wep_key = !ctx->key_mapping_keys;
702 key->hw_key_idx == IWLAGN_HW_KEY_DEFAULT;
708 if (is_default_wep_key) {
709 ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
712 ret = iwl_set_dynamic_key(priv, vif_priv->ctx, key, sta);
715 * can't add key for RX, but we don't need it
716 * in the device for TX so still return 0
719 key->hw_key_idx = WEP_INVALID_OFFSET;
722 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
725 if (is_default_wep_key)
726 ret = iwl_remove_default_wep_key(priv, ctx, key);
728 ret = iwl_remove_dynamic_key(priv, ctx, key, sta);
730 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
736 mutex_unlock(&priv->mutex);
737 IWL_DEBUG_MAC80211(priv, "leave\n");
742 static int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw,
743 struct ieee80211_vif *vif,
744 enum ieee80211_ampdu_mlme_action action,
745 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
748 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
750 struct iwl_station_priv *sta_priv = (void *) sta->drv_priv;
752 IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
755 if (!(priv->nvm_data->sku_cap_11n_enable))
758 IWL_DEBUG_MAC80211(priv, "enter\n");
759 mutex_lock(&priv->mutex);
762 case IEEE80211_AMPDU_RX_START:
763 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
765 IWL_DEBUG_HT(priv, "start Rx\n");
766 ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
768 case IEEE80211_AMPDU_RX_STOP:
769 IWL_DEBUG_HT(priv, "stop Rx\n");
770 ret = iwl_sta_rx_agg_stop(priv, sta, tid);
772 case IEEE80211_AMPDU_TX_START:
773 if (!priv->trans->ops->txq_enable)
775 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
777 IWL_DEBUG_HT(priv, "start Tx\n");
778 ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
780 case IEEE80211_AMPDU_TX_STOP_CONT:
781 case IEEE80211_AMPDU_TX_STOP_FLUSH:
782 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
783 IWL_DEBUG_HT(priv, "stop Tx\n");
784 ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
785 if ((ret == 0) && (priv->agg_tids_count > 0)) {
786 priv->agg_tids_count--;
787 IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
788 priv->agg_tids_count);
790 if (!priv->agg_tids_count &&
791 priv->hw_params.use_rts_for_aggregation) {
793 * switch off RTS/CTS if it was previously enabled
795 sta_priv->lq_sta.lq.general_params.flags &=
796 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
797 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
798 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
801 case IEEE80211_AMPDU_TX_OPERATIONAL:
802 ret = iwlagn_tx_agg_oper(priv, vif, sta, tid, buf_size);
805 mutex_unlock(&priv->mutex);
806 IWL_DEBUG_MAC80211(priv, "leave\n");
810 static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
811 struct ieee80211_vif *vif,
812 struct ieee80211_sta *sta)
814 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
815 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
816 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
817 bool is_ap = vif->type == NL80211_IFTYPE_STATION;
821 IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
823 sta_priv->sta_id = IWL_INVALID_STATION;
825 atomic_set(&sta_priv->pending_frames, 0);
826 if (vif->type == NL80211_IFTYPE_AP)
827 sta_priv->client = true;
829 ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
830 is_ap, sta, &sta_id);
832 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
834 /* Should we return success if return code is EEXIST ? */
838 sta_priv->sta_id = sta_id;
843 static int iwlagn_mac_sta_remove(struct ieee80211_hw *hw,
844 struct ieee80211_vif *vif,
845 struct ieee80211_sta *sta)
847 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
848 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
851 IWL_DEBUG_INFO(priv, "proceeding to remove station %pM\n", sta->addr);
853 if (vif->type == NL80211_IFTYPE_STATION) {
855 * Station will be removed from device when the RXON
856 * is set to unassociated -- just deactivate it here
857 * to avoid re-programming it.
860 iwl_deactivate_station(priv, sta_priv->sta_id, sta->addr);
862 ret = iwl_remove_station(priv, sta_priv->sta_id, sta->addr);
864 IWL_DEBUG_QUIET_RFKILL(priv,
865 "Error removing station %pM\n", sta->addr);
870 static int iwlagn_mac_sta_state(struct ieee80211_hw *hw,
871 struct ieee80211_vif *vif,
872 struct ieee80211_sta *sta,
873 enum ieee80211_sta_state old_state,
874 enum ieee80211_sta_state new_state)
876 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
877 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
879 NONE, ADD, REMOVE, HT_RATE_INIT, ADD_RATE_INIT,
883 IWL_DEBUG_MAC80211(priv, "station %pM state change %d->%d\n",
884 sta->addr, old_state, new_state);
886 mutex_lock(&priv->mutex);
887 if (vif->type == NL80211_IFTYPE_STATION) {
888 if (old_state == IEEE80211_STA_NOTEXIST &&
889 new_state == IEEE80211_STA_NONE)
891 else if (old_state == IEEE80211_STA_NONE &&
892 new_state == IEEE80211_STA_NOTEXIST)
894 else if (old_state == IEEE80211_STA_AUTH &&
895 new_state == IEEE80211_STA_ASSOC)
898 if (old_state == IEEE80211_STA_AUTH &&
899 new_state == IEEE80211_STA_ASSOC)
901 else if (old_state == IEEE80211_STA_ASSOC &&
902 new_state == IEEE80211_STA_AUTH)
908 ret = iwlagn_mac_sta_add(hw, vif, sta);
912 * Clear the in-progress flag, the AP station entry was added
913 * but we'll initialize LQ only when we've associated (which
914 * would also clear the in-progress flag). This is necessary
915 * in case we never initialize LQ because association fails.
917 spin_lock_bh(&priv->sta_lock);
918 priv->stations[iwl_sta_id(sta)].used &=
919 ~IWL_STA_UCODE_INPROGRESS;
920 spin_unlock_bh(&priv->sta_lock);
923 ret = iwlagn_mac_sta_remove(hw, vif, sta);
926 ret = iwlagn_mac_sta_add(hw, vif, sta);
929 /* Initialize rate scaling */
931 "Initializing rate scaling for station %pM\n",
933 iwl_rs_rate_init(priv, sta, iwl_sta_id(sta));
937 /* Initialize rate scaling */
938 ret = iwl_sta_update_ht(priv, vif_priv->ctx, sta);
942 "Initializing rate scaling for station %pM\n",
944 iwl_rs_rate_init(priv, sta, iwl_sta_id(sta));
953 * mac80211 might WARN if we fail, but due the way we
954 * (badly) handle hard rfkill, we might fail here
956 if (iwl_is_rfkill(priv))
959 mutex_unlock(&priv->mutex);
960 IWL_DEBUG_MAC80211(priv, "leave\n");
965 static void iwlagn_mac_channel_switch(struct ieee80211_hw *hw,
966 struct ieee80211_channel_switch *ch_switch)
968 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
969 struct ieee80211_conf *conf = &hw->conf;
970 struct ieee80211_channel *channel = ch_switch->channel;
971 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
974 * When we add support for multiple interfaces, we need to
975 * revisit this. The channel switch command in the device
976 * only affects the BSS context, but what does that really
977 * mean? And what if we get a CSA on the second interface?
978 * This needs a lot of work.
980 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
983 IWL_DEBUG_MAC80211(priv, "enter\n");
985 mutex_lock(&priv->mutex);
987 if (iwl_is_rfkill(priv))
990 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
991 test_bit(STATUS_SCANNING, &priv->status) ||
992 test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status))
995 if (!iwl_is_associated_ctx(ctx))
998 if (!priv->lib->set_channel_switch)
1001 ch = channel->hw_value;
1002 if (le16_to_cpu(ctx->active.channel) == ch)
1005 priv->current_ht_config.smps = conf->smps_mode;
1007 /* Configure HT40 channels */
1008 ctx->ht.enabled = conf_is_ht(conf);
1009 if (ctx->ht.enabled)
1010 iwlagn_config_ht40(conf, ctx);
1012 ctx->ht.is_40mhz = false;
1014 if ((le16_to_cpu(ctx->staging.channel) != ch))
1015 ctx->staging.flags = 0;
1017 iwl_set_rxon_channel(priv, channel, ctx);
1018 iwl_set_rxon_ht(priv, ht_conf);
1019 iwl_set_flags_for_band(priv, ctx, channel->band, ctx->vif);
1022 * at this point, staging_rxon has the
1023 * configuration for channel switch
1025 set_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
1026 priv->switch_channel = cpu_to_le16(ch);
1027 if (priv->lib->set_channel_switch(priv, ch_switch)) {
1028 clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
1029 priv->switch_channel = 0;
1030 ieee80211_chswitch_done(ctx->vif, false);
1034 mutex_unlock(&priv->mutex);
1035 IWL_DEBUG_MAC80211(priv, "leave\n");
1038 void iwl_chswitch_done(struct iwl_priv *priv, bool is_success)
1042 * See iwlagn_mac_channel_switch.
1044 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1046 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1049 if (test_and_clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status))
1050 ieee80211_chswitch_done(ctx->vif, is_success);
1053 static void iwlagn_configure_filter(struct ieee80211_hw *hw,
1054 unsigned int changed_flags,
1055 unsigned int *total_flags,
1058 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1059 __le32 filter_or = 0, filter_nand = 0;
1060 struct iwl_rxon_context *ctx;
1062 #define CHK(test, flag) do { \
1063 if (*total_flags & (test)) \
1064 filter_or |= (flag); \
1066 filter_nand |= (flag); \
1069 IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
1070 changed_flags, *total_flags);
1072 CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
1073 /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
1074 CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK);
1075 CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
1079 mutex_lock(&priv->mutex);
1081 for_each_context(priv, ctx) {
1082 ctx->staging.filter_flags &= ~filter_nand;
1083 ctx->staging.filter_flags |= filter_or;
1086 * Not committing directly because hardware can perform a scan,
1087 * but we'll eventually commit the filter flags change anyway.
1091 mutex_unlock(&priv->mutex);
1094 * Receiving all multicast frames is always enabled by the
1095 * default flags setup in iwl_connection_init_rx_config()
1096 * since we currently do not support programming multicast
1097 * filters into the device.
1099 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
1100 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
1103 static void iwlagn_mac_flush(struct ieee80211_hw *hw, bool drop)
1105 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1107 mutex_lock(&priv->mutex);
1108 IWL_DEBUG_MAC80211(priv, "enter\n");
1110 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1111 IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
1114 if (iwl_is_rfkill(priv)) {
1115 IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
1120 * mac80211 will not push any more frames for transmit
1121 * until the flush is completed
1124 IWL_DEBUG_MAC80211(priv, "send flush command\n");
1125 if (iwlagn_txfifo_flush(priv)) {
1126 IWL_ERR(priv, "flush request fail\n");
1130 IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
1131 iwl_trans_wait_tx_queue_empty(priv->trans);
1133 mutex_unlock(&priv->mutex);
1134 IWL_DEBUG_MAC80211(priv, "leave\n");
1137 static int iwlagn_mac_remain_on_channel(struct ieee80211_hw *hw,
1138 struct ieee80211_vif *vif,
1139 struct ieee80211_channel *channel,
1141 enum ieee80211_roc_type type)
1143 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1144 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
1147 if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
1150 if (!(ctx->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)))
1153 IWL_DEBUG_MAC80211(priv, "enter\n");
1154 mutex_lock(&priv->mutex);
1156 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
1157 /* mac80211 should not scan while ROC or ROC while scanning */
1158 if (WARN_ON_ONCE(priv->scan_type != IWL_SCAN_RADIO_RESET)) {
1163 iwl_scan_cancel_timeout(priv, 100);
1165 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
1171 priv->hw_roc_channel = channel;
1172 /* convert from ms to TU */
1173 priv->hw_roc_duration = DIV_ROUND_UP(1000 * duration, 1024);
1174 priv->hw_roc_start_notified = false;
1175 cancel_delayed_work(&priv->hw_roc_disable_work);
1177 if (!ctx->is_active) {
1178 static const struct iwl_qos_info default_qos_data = {
1181 .cw_min = cpu_to_le16(3),
1182 .cw_max = cpu_to_le16(7),
1184 .edca_txop = cpu_to_le16(1504),
1187 .cw_min = cpu_to_le16(7),
1188 .cw_max = cpu_to_le16(15),
1190 .edca_txop = cpu_to_le16(3008),
1193 .cw_min = cpu_to_le16(15),
1194 .cw_max = cpu_to_le16(1023),
1198 .cw_min = cpu_to_le16(15),
1199 .cw_max = cpu_to_le16(1023),
1205 ctx->is_active = true;
1206 ctx->qos_data = default_qos_data;
1207 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
1208 memcpy(ctx->staging.node_addr,
1209 priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
1211 memcpy(ctx->staging.bssid_addr,
1212 priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
1214 err = iwlagn_commit_rxon(priv, ctx);
1217 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK |
1218 RXON_FILTER_PROMISC_MSK |
1219 RXON_FILTER_CTL2HOST_MSK;
1221 err = iwlagn_commit_rxon(priv, ctx);
1223 iwlagn_disable_roc(priv);
1226 priv->hw_roc_setup = true;
1229 err = iwl_scan_initiate(priv, ctx->vif, IWL_SCAN_ROC, channel->band);
1231 iwlagn_disable_roc(priv);
1234 mutex_unlock(&priv->mutex);
1235 IWL_DEBUG_MAC80211(priv, "leave\n");
1240 static int iwlagn_mac_cancel_remain_on_channel(struct ieee80211_hw *hw)
1242 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1244 if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
1247 IWL_DEBUG_MAC80211(priv, "enter\n");
1248 mutex_lock(&priv->mutex);
1249 iwl_scan_cancel_timeout(priv, priv->hw_roc_duration);
1250 iwlagn_disable_roc(priv);
1251 mutex_unlock(&priv->mutex);
1252 IWL_DEBUG_MAC80211(priv, "leave\n");
1257 static void iwlagn_mac_rssi_callback(struct ieee80211_hw *hw,
1258 struct ieee80211_vif *vif,
1259 enum ieee80211_rssi_event rssi_event)
1261 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1263 IWL_DEBUG_MAC80211(priv, "enter\n");
1264 mutex_lock(&priv->mutex);
1266 if (priv->cfg->bt_params &&
1267 priv->cfg->bt_params->advanced_bt_coexist) {
1268 if (rssi_event == RSSI_EVENT_LOW)
1269 priv->bt_enable_pspoll = true;
1270 else if (rssi_event == RSSI_EVENT_HIGH)
1271 priv->bt_enable_pspoll = false;
1273 iwlagn_send_advance_bt_config(priv);
1275 IWL_DEBUG_MAC80211(priv, "Advanced BT coex disabled,"
1276 "ignoring RSSI callback\n");
1279 mutex_unlock(&priv->mutex);
1280 IWL_DEBUG_MAC80211(priv, "leave\n");
1283 static int iwlagn_mac_set_tim(struct ieee80211_hw *hw,
1284 struct ieee80211_sta *sta, bool set)
1286 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1288 queue_work(priv->workqueue, &priv->beacon_update);
1293 static int iwlagn_mac_conf_tx(struct ieee80211_hw *hw,
1294 struct ieee80211_vif *vif, u16 queue,
1295 const struct ieee80211_tx_queue_params *params)
1297 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1298 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
1299 struct iwl_rxon_context *ctx = vif_priv->ctx;
1305 IWL_DEBUG_MAC80211(priv, "enter\n");
1307 if (!iwl_is_ready_rf(priv)) {
1308 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
1312 if (queue >= AC_NUM) {
1313 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
1317 q = AC_NUM - 1 - queue;
1319 mutex_lock(&priv->mutex);
1321 ctx->qos_data.def_qos_parm.ac[q].cw_min =
1322 cpu_to_le16(params->cw_min);
1323 ctx->qos_data.def_qos_parm.ac[q].cw_max =
1324 cpu_to_le16(params->cw_max);
1325 ctx->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
1326 ctx->qos_data.def_qos_parm.ac[q].edca_txop =
1327 cpu_to_le16((params->txop * 32));
1329 ctx->qos_data.def_qos_parm.ac[q].reserved1 = 0;
1331 mutex_unlock(&priv->mutex);
1333 IWL_DEBUG_MAC80211(priv, "leave\n");
1337 static int iwlagn_mac_tx_last_beacon(struct ieee80211_hw *hw)
1339 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1341 return priv->ibss_manager == IWL_IBSS_MANAGER;
1344 static int iwl_set_mode(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
1346 iwl_connection_init_rx_config(priv, ctx);
1348 iwlagn_set_rxon_chain(priv, ctx);
1350 return iwlagn_commit_rxon(priv, ctx);
1353 static int iwl_setup_interface(struct iwl_priv *priv,
1354 struct iwl_rxon_context *ctx)
1356 struct ieee80211_vif *vif = ctx->vif;
1359 lockdep_assert_held(&priv->mutex);
1362 * This variable will be correct only when there's just
1363 * a single context, but all code using it is for hardware
1364 * that supports only one context.
1366 priv->iw_mode = vif->type;
1368 ctx->is_active = true;
1370 err = iwl_set_mode(priv, ctx);
1372 if (!ctx->always_active)
1373 ctx->is_active = false;
1377 if (priv->cfg->bt_params && priv->cfg->bt_params->advanced_bt_coexist &&
1378 vif->type == NL80211_IFTYPE_ADHOC) {
1380 * pretend to have high BT traffic as long as we
1381 * are operating in IBSS mode, as this will cause
1382 * the rate scaling etc. to behave as intended.
1384 priv->bt_traffic_load = IWL_BT_COEX_TRAFFIC_LOAD_HIGH;
1387 /* set up queue mappings */
1388 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
1389 vif->hw_queue[ac] = ctx->ac_to_queue[ac];
1391 if (vif->type == NL80211_IFTYPE_AP)
1392 vif->cab_queue = ctx->mcast_queue;
1394 vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
1399 static int iwlagn_mac_add_interface(struct ieee80211_hw *hw,
1400 struct ieee80211_vif *vif)
1402 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1403 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
1404 struct iwl_rxon_context *tmp, *ctx = NULL;
1406 enum nl80211_iftype viftype = ieee80211_vif_type_p2p(vif);
1409 IWL_DEBUG_MAC80211(priv, "enter: type %d, addr %pM\n",
1410 viftype, vif->addr);
1412 cancel_delayed_work_sync(&priv->hw_roc_disable_work);
1414 mutex_lock(&priv->mutex);
1416 iwlagn_disable_roc(priv);
1418 if (!iwl_is_ready_rf(priv)) {
1419 IWL_WARN(priv, "Try to add interface when device not ready\n");
1424 for_each_context(priv, tmp) {
1425 u32 possible_modes =
1426 tmp->interface_modes | tmp->exclusive_interface_modes;
1429 /* On reset we need to add the same interface again */
1430 if (tmp->vif == vif) {
1436 /* check if this busy context is exclusive */
1437 if (tmp->exclusive_interface_modes &
1438 BIT(tmp->vif->type)) {
1445 if (!(possible_modes & BIT(viftype)))
1448 /* have maybe usable context w/o interface */
1458 vif_priv->ctx = ctx;
1462 * In SNIFFER device type, the firmware reports the FCS to
1463 * the host, rather than snipping it off. Unfortunately,
1464 * mac80211 doesn't (yet) provide a per-packet flag for
1465 * this, so that we have to set the hardware flag based
1466 * on the interfaces added. As the monitor interface can
1467 * only be present by itself, and will be removed before
1468 * other interfaces are added, this is safe.
1470 if (vif->type == NL80211_IFTYPE_MONITOR)
1471 priv->hw->flags |= IEEE80211_HW_RX_INCLUDES_FCS;
1473 priv->hw->flags &= ~IEEE80211_HW_RX_INCLUDES_FCS;
1475 err = iwl_setup_interface(priv, ctx);
1480 priv->iw_mode = NL80211_IFTYPE_STATION;
1482 mutex_unlock(&priv->mutex);
1484 IWL_DEBUG_MAC80211(priv, "leave\n");
1488 static void iwl_teardown_interface(struct iwl_priv *priv,
1489 struct ieee80211_vif *vif,
1492 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1494 lockdep_assert_held(&priv->mutex);
1496 if (priv->scan_vif == vif) {
1497 iwl_scan_cancel_timeout(priv, 200);
1498 iwl_force_scan_end(priv);
1502 iwl_set_mode(priv, ctx);
1503 if (!ctx->always_active)
1504 ctx->is_active = false;
1508 * When removing the IBSS interface, overwrite the
1509 * BT traffic load with the stored one from the last
1510 * notification, if any. If this is a device that
1511 * doesn't implement this, this has no effect since
1512 * both values are the same and zero.
1514 if (vif->type == NL80211_IFTYPE_ADHOC)
1515 priv->bt_traffic_load = priv->last_bt_traffic_load;
1518 static void iwlagn_mac_remove_interface(struct ieee80211_hw *hw,
1519 struct ieee80211_vif *vif)
1521 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1522 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1524 IWL_DEBUG_MAC80211(priv, "enter\n");
1526 mutex_lock(&priv->mutex);
1528 if (WARN_ON(ctx->vif != vif)) {
1529 struct iwl_rxon_context *tmp;
1530 IWL_ERR(priv, "ctx->vif = %p, vif = %p\n", ctx->vif, vif);
1531 for_each_context(priv, tmp)
1532 IWL_ERR(priv, "\tID = %d:\tctx = %p\tctx->vif = %p\n",
1533 tmp->ctxid, tmp, tmp->vif);
1537 iwl_teardown_interface(priv, vif, false);
1539 mutex_unlock(&priv->mutex);
1541 IWL_DEBUG_MAC80211(priv, "leave\n");
1545 static int iwlagn_mac_change_interface(struct ieee80211_hw *hw,
1546 struct ieee80211_vif *vif,
1547 enum nl80211_iftype newtype, bool newp2p)
1549 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1550 struct iwl_rxon_context *ctx, *tmp;
1551 enum nl80211_iftype newviftype = newtype;
1552 u32 interface_modes;
1555 IWL_DEBUG_MAC80211(priv, "enter\n");
1557 newtype = ieee80211_iftype_p2p(newtype, newp2p);
1559 mutex_lock(&priv->mutex);
1561 ctx = iwl_rxon_ctx_from_vif(vif);
1564 * To simplify this code, only support changes on the
1565 * BSS context. The PAN context is usually reassigned
1566 * by creating/removing P2P interfaces anyway.
1568 if (ctx->ctxid != IWL_RXON_CTX_BSS) {
1573 if (!ctx->vif || !iwl_is_ready_rf(priv)) {
1575 * Huh? But wait ... this can maybe happen when
1576 * we're in the middle of a firmware restart!
1582 /* Check if the switch is supported in the same context */
1583 interface_modes = ctx->interface_modes | ctx->exclusive_interface_modes;
1584 if (!(interface_modes & BIT(newtype))) {
1589 if (ctx->exclusive_interface_modes & BIT(newtype)) {
1590 for_each_context(priv, tmp) {
1594 if (!tmp->is_active)
1598 * The current mode switch would be exclusive, but
1599 * another context is active ... refuse the switch.
1607 iwl_teardown_interface(priv, vif, true);
1608 vif->type = newviftype;
1610 err = iwl_setup_interface(priv, ctx);
1613 * We've switched internally, but submitting to the
1614 * device may have failed for some reason. Mask this
1615 * error, because otherwise mac80211 will not switch
1616 * (and set the interface type back) and we'll be
1617 * out of sync with it.
1622 mutex_unlock(&priv->mutex);
1623 IWL_DEBUG_MAC80211(priv, "leave\n");
1628 static int iwlagn_mac_hw_scan(struct ieee80211_hw *hw,
1629 struct ieee80211_vif *vif,
1630 struct cfg80211_scan_request *req)
1632 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1635 IWL_DEBUG_MAC80211(priv, "enter\n");
1637 if (req->n_channels == 0)
1640 mutex_lock(&priv->mutex);
1643 * If an internal scan is in progress, just set
1644 * up the scan_request as per above.
1646 if (priv->scan_type != IWL_SCAN_NORMAL) {
1647 IWL_DEBUG_SCAN(priv,
1648 "SCAN request during internal scan - defer\n");
1649 priv->scan_request = req;
1650 priv->scan_vif = vif;
1653 priv->scan_request = req;
1654 priv->scan_vif = vif;
1656 * mac80211 will only ask for one band at a time
1657 * so using channels[0] here is ok
1659 ret = iwl_scan_initiate(priv, vif, IWL_SCAN_NORMAL,
1660 req->channels[0]->band);
1662 priv->scan_request = NULL;
1663 priv->scan_vif = NULL;
1667 IWL_DEBUG_MAC80211(priv, "leave\n");
1669 mutex_unlock(&priv->mutex);
1674 static void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id)
1676 struct iwl_addsta_cmd cmd = {
1677 .mode = STA_CONTROL_MODIFY_MSK,
1678 .station_flags_msk = STA_FLG_PWR_SAVE_MSK,
1679 .sta.sta_id = sta_id,
1682 iwl_send_add_sta(priv, &cmd, CMD_ASYNC);
1685 static void iwlagn_mac_sta_notify(struct ieee80211_hw *hw,
1686 struct ieee80211_vif *vif,
1687 enum sta_notify_cmd cmd,
1688 struct ieee80211_sta *sta)
1690 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1691 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
1694 IWL_DEBUG_MAC80211(priv, "enter\n");
1697 case STA_NOTIFY_SLEEP:
1698 WARN_ON(!sta_priv->client);
1699 sta_priv->asleep = true;
1700 if (atomic_read(&sta_priv->pending_frames) > 0)
1701 ieee80211_sta_block_awake(hw, sta, true);
1703 case STA_NOTIFY_AWAKE:
1704 WARN_ON(!sta_priv->client);
1705 if (!sta_priv->asleep)
1707 sta_priv->asleep = false;
1708 sta_id = iwl_sta_id(sta);
1709 if (sta_id != IWL_INVALID_STATION)
1710 iwl_sta_modify_ps_wake(priv, sta_id);
1715 IWL_DEBUG_MAC80211(priv, "leave\n");
1718 struct ieee80211_ops iwlagn_hw_ops = {
1719 .tx = iwlagn_mac_tx,
1720 .start = iwlagn_mac_start,
1721 .stop = iwlagn_mac_stop,
1722 #ifdef CONFIG_PM_SLEEP
1723 .suspend = iwlagn_mac_suspend,
1724 .resume = iwlagn_mac_resume,
1725 .set_wakeup = iwlagn_mac_set_wakeup,
1727 .add_interface = iwlagn_mac_add_interface,
1728 .remove_interface = iwlagn_mac_remove_interface,
1729 .change_interface = iwlagn_mac_change_interface,
1730 .config = iwlagn_mac_config,
1731 .configure_filter = iwlagn_configure_filter,
1732 .set_key = iwlagn_mac_set_key,
1733 .update_tkip_key = iwlagn_mac_update_tkip_key,
1734 .set_rekey_data = iwlagn_mac_set_rekey_data,
1735 .conf_tx = iwlagn_mac_conf_tx,
1736 .bss_info_changed = iwlagn_bss_info_changed,
1737 .ampdu_action = iwlagn_mac_ampdu_action,
1738 .hw_scan = iwlagn_mac_hw_scan,
1739 .sta_notify = iwlagn_mac_sta_notify,
1740 .sta_state = iwlagn_mac_sta_state,
1741 .channel_switch = iwlagn_mac_channel_switch,
1742 .flush = iwlagn_mac_flush,
1743 .tx_last_beacon = iwlagn_mac_tx_last_beacon,
1744 .remain_on_channel = iwlagn_mac_remain_on_channel,
1745 .cancel_remain_on_channel = iwlagn_mac_cancel_remain_on_channel,
1746 .rssi_callback = iwlagn_mac_rssi_callback,
1747 CFG80211_TESTMODE_CMD(iwlagn_mac_testmode_cmd)
1748 CFG80211_TESTMODE_DUMP(iwlagn_mac_testmode_dump)
1749 .set_tim = iwlagn_mac_set_tim,
1752 /* This function both allocates and initializes hw and priv. */
1753 struct ieee80211_hw *iwl_alloc_all(void)
1755 struct iwl_priv *priv;
1756 struct iwl_op_mode *op_mode;
1757 /* mac80211 allocates memory for this device instance, including
1758 * space for this driver's private structure */
1759 struct ieee80211_hw *hw;
1761 hw = ieee80211_alloc_hw(sizeof(struct iwl_priv) +
1762 sizeof(struct iwl_op_mode), &iwlagn_hw_ops);
1767 priv = IWL_OP_MODE_GET_DVM(op_mode);