1 /******************************************************************************
3 * Copyright(c) 2003 - 2014 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/slab.h>
32 #include <linux/dma-mapping.h>
33 #include <linux/delay.h>
34 #include <linux/sched.h>
35 #include <linux/skbuff.h>
36 #include <linux/netdevice.h>
37 #include <linux/etherdevice.h>
38 #include <linux/if_arp.h>
40 #include <net/ieee80211_radiotap.h>
41 #include <net/mac80211.h>
43 #include <asm/div64.h>
46 #include "iwl-trans.h"
47 #include "iwl-op-mode.h"
48 #include "iwl-modparams.h"
54 /*****************************************************************************
56 * mac80211 entry point functions
58 *****************************************************************************/
60 static const struct ieee80211_iface_limit iwlagn_sta_ap_limits[] = {
63 .types = BIT(NL80211_IFTYPE_STATION),
67 .types = BIT(NL80211_IFTYPE_AP),
71 static const struct ieee80211_iface_limit iwlagn_2sta_limits[] = {
74 .types = BIT(NL80211_IFTYPE_STATION),
78 static const struct ieee80211_iface_combination
79 iwlagn_iface_combinations_dualmode[] = {
80 { .num_different_channels = 1,
82 .beacon_int_infra_match = true,
83 .limits = iwlagn_sta_ap_limits,
84 .n_limits = ARRAY_SIZE(iwlagn_sta_ap_limits),
86 { .num_different_channels = 1,
88 .limits = iwlagn_2sta_limits,
89 .n_limits = ARRAY_SIZE(iwlagn_2sta_limits),
94 * Not a mac80211 entry point function, but it fits in with all the
95 * other mac80211 functions grouped here.
97 int iwlagn_mac_setup_register(struct iwl_priv *priv,
98 const struct iwl_ucode_capabilities *capa)
101 struct ieee80211_hw *hw = priv->hw;
102 struct iwl_rxon_context *ctx;
104 hw->rate_control_algorithm = "iwl-agn-rs";
106 /* Tell mac80211 our characteristics */
107 hw->flags = IEEE80211_HW_SIGNAL_DBM |
108 IEEE80211_HW_AMPDU_AGGREGATION |
109 IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC |
110 IEEE80211_HW_SPECTRUM_MGMT |
111 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
112 IEEE80211_HW_QUEUE_CONTROL |
113 IEEE80211_HW_SUPPORTS_PS |
114 IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
115 IEEE80211_HW_WANT_MONITOR_VIF;
117 hw->offchannel_tx_hw_queue = IWL_AUX_QUEUE;
118 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FMT;
121 * Including the following line will crash some AP's. This
122 * workaround removes the stimulus which causes the crash until
123 * the AP software can be fixed.
124 hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
127 if (priv->nvm_data->sku_cap_11n_enable)
128 hw->wiphy->features |= NL80211_FEATURE_DYNAMIC_SMPS |
129 NL80211_FEATURE_STATIC_SMPS;
132 * Enable 11w if advertised by firmware and software crypto
133 * is not enabled (as the firmware will interpret some mgmt
134 * packets, so enabling it with software crypto isn't safe)
136 if (priv->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
137 !iwlwifi_mod_params.sw_crypto)
138 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
140 hw->sta_data_size = sizeof(struct iwl_station_priv);
141 hw->vif_data_size = sizeof(struct iwl_vif_priv);
143 for_each_context(priv, ctx) {
144 hw->wiphy->interface_modes |= ctx->interface_modes;
145 hw->wiphy->interface_modes |= ctx->exclusive_interface_modes;
148 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
150 if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
151 hw->wiphy->iface_combinations =
152 iwlagn_iface_combinations_dualmode;
153 hw->wiphy->n_iface_combinations =
154 ARRAY_SIZE(iwlagn_iface_combinations_dualmode);
157 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
158 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
159 REGULATORY_DISABLE_BEACON_HINTS;
161 #ifdef CONFIG_PM_SLEEP
162 if (priv->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
163 priv->trans->ops->d3_suspend &&
164 priv->trans->ops->d3_resume &&
165 device_can_wakeup(priv->trans->dev)) {
166 priv->wowlan_support.flags = WIPHY_WOWLAN_MAGIC_PKT |
167 WIPHY_WOWLAN_DISCONNECT |
168 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
169 WIPHY_WOWLAN_RFKILL_RELEASE;
170 if (!iwlwifi_mod_params.sw_crypto)
171 priv->wowlan_support.flags |=
172 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
173 WIPHY_WOWLAN_GTK_REKEY_FAILURE;
175 priv->wowlan_support.n_patterns = IWLAGN_WOWLAN_MAX_PATTERNS;
176 priv->wowlan_support.pattern_min_len =
177 IWLAGN_WOWLAN_MIN_PATTERN_LEN;
178 priv->wowlan_support.pattern_max_len =
179 IWLAGN_WOWLAN_MAX_PATTERN_LEN;
180 hw->wiphy->wowlan = &priv->wowlan_support;
184 if (iwlwifi_mod_params.power_save)
185 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
187 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
189 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
190 /* we create the 802.11 header and a max-length SSID element */
191 hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 34;
194 * We don't use all queues: 4 and 9 are unused and any
195 * aggregation queue gets mapped down to the AC queue.
197 hw->queues = IWLAGN_FIRST_AMPDU_QUEUE;
199 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
201 if (priv->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
202 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
203 &priv->nvm_data->bands[IEEE80211_BAND_2GHZ];
204 if (priv->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
205 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
206 &priv->nvm_data->bands[IEEE80211_BAND_5GHZ];
208 hw->wiphy->hw_version = priv->trans->hw_id;
212 ret = ieee80211_register_hw(priv->hw);
214 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
218 priv->mac80211_registered = 1;
223 void iwlagn_mac_unregister(struct iwl_priv *priv)
225 if (!priv->mac80211_registered)
228 ieee80211_unregister_hw(priv->hw);
229 priv->mac80211_registered = 0;
232 static int __iwl_up(struct iwl_priv *priv)
234 struct iwl_rxon_context *ctx;
237 lockdep_assert_held(&priv->mutex);
239 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
240 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
244 for_each_context(priv, ctx) {
245 ret = iwlagn_alloc_bcast_station(priv, ctx);
247 iwl_dealloc_bcast_stations(priv);
252 ret = iwl_run_init_ucode(priv);
254 IWL_ERR(priv, "Failed to run INIT ucode: %d\n", ret);
258 ret = iwl_load_ucode_wait_alive(priv, IWL_UCODE_REGULAR);
260 IWL_ERR(priv, "Failed to start RT ucode: %d\n", ret);
264 ret = iwl_alive_start(priv);
270 set_bit(STATUS_EXIT_PENDING, &priv->status);
272 clear_bit(STATUS_EXIT_PENDING, &priv->status);
274 IWL_ERR(priv, "Unable to initialize device.\n");
278 static int iwlagn_mac_start(struct ieee80211_hw *hw)
280 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
283 IWL_DEBUG_MAC80211(priv, "enter\n");
285 /* we should be verifying the device is ready to be opened */
286 mutex_lock(&priv->mutex);
287 ret = __iwl_up(priv);
288 mutex_unlock(&priv->mutex);
292 IWL_DEBUG_INFO(priv, "Start UP work done.\n");
294 /* Now we should be done, and the READY bit should be set. */
295 if (WARN_ON(!test_bit(STATUS_READY, &priv->status)))
298 iwlagn_led_enable(priv);
301 IWL_DEBUG_MAC80211(priv, "leave\n");
305 static void iwlagn_mac_stop(struct ieee80211_hw *hw)
307 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
309 IWL_DEBUG_MAC80211(priv, "enter\n");
316 mutex_lock(&priv->mutex);
318 mutex_unlock(&priv->mutex);
320 iwl_cancel_deferred_work(priv);
322 flush_workqueue(priv->workqueue);
324 IWL_DEBUG_MAC80211(priv, "leave\n");
327 static void iwlagn_mac_set_rekey_data(struct ieee80211_hw *hw,
328 struct ieee80211_vif *vif,
329 struct cfg80211_gtk_rekey_data *data)
331 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
333 if (iwlwifi_mod_params.sw_crypto)
336 IWL_DEBUG_MAC80211(priv, "enter\n");
337 mutex_lock(&priv->mutex);
339 if (priv->contexts[IWL_RXON_CTX_BSS].vif != vif)
342 memcpy(priv->kek, data->kek, NL80211_KEK_LEN);
343 memcpy(priv->kck, data->kck, NL80211_KCK_LEN);
345 cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr));
346 priv->have_rekey_data = true;
349 mutex_unlock(&priv->mutex);
350 IWL_DEBUG_MAC80211(priv, "leave\n");
353 #ifdef CONFIG_PM_SLEEP
355 static int iwlagn_mac_suspend(struct ieee80211_hw *hw,
356 struct cfg80211_wowlan *wowlan)
358 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
359 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
362 if (WARN_ON(!wowlan))
365 IWL_DEBUG_MAC80211(priv, "enter\n");
366 mutex_lock(&priv->mutex);
368 /* Don't attempt WoWLAN when not associated, tear down instead. */
369 if (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION ||
370 !iwl_is_associated_ctx(ctx)) {
375 ret = iwlagn_suspend(priv, wowlan);
379 /* let the ucode operate on its own */
380 iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_SET,
381 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
383 iwl_trans_d3_suspend(priv->trans, false);
388 priv->wowlan = false;
389 iwlagn_prepare_restart(priv);
390 ieee80211_restart_hw(priv->hw);
392 mutex_unlock(&priv->mutex);
393 IWL_DEBUG_MAC80211(priv, "leave\n");
398 struct iwl_resume_data {
399 struct iwl_priv *priv;
400 struct iwlagn_wowlan_status *cmd;
404 static bool iwl_resume_status_fn(struct iwl_notif_wait_data *notif_wait,
405 struct iwl_rx_packet *pkt, void *data)
407 struct iwl_resume_data *resume_data = data;
408 struct iwl_priv *priv = resume_data->priv;
410 if (iwl_rx_packet_payload_len(pkt) != sizeof(*resume_data->cmd)) {
411 IWL_ERR(priv, "rx wrong size data\n");
414 memcpy(resume_data->cmd, pkt->data, sizeof(*resume_data->cmd));
415 resume_data->valid = true;
420 static int iwlagn_mac_resume(struct ieee80211_hw *hw)
422 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
423 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
424 struct ieee80211_vif *vif;
427 enum iwl_d3_status d3_status;
428 struct error_table_start {
429 /* cf. struct iwl_error_event_table */
433 struct iwl_notification_wait status_wait;
434 static const u8 status_cmd[] = {
435 REPLY_WOWLAN_GET_STATUS,
437 struct iwlagn_wowlan_status status_data = {};
438 struct iwl_resume_data resume_data = {
443 struct cfg80211_wowlan_wakeup wakeup = {
446 #ifdef CONFIG_IWLWIFI_DEBUGFS
447 const struct fw_img *img;
450 IWL_DEBUG_MAC80211(priv, "enter\n");
451 mutex_lock(&priv->mutex);
453 /* we'll clear ctx->vif during iwlagn_prepare_restart() */
456 ret = iwl_trans_d3_resume(priv->trans, &d3_status, false);
460 if (d3_status != IWL_D3_STATUS_ALIVE) {
461 IWL_INFO(priv, "Device was reset during suspend\n");
465 /* uCode is no longer operating by itself */
466 iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_CLR,
467 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
469 base = priv->device_pointers.error_event_table;
470 if (!iwlagn_hw_valid_rtc_data_addr(base)) {
471 IWL_WARN(priv, "Invalid error table during resume!\n");
475 iwl_trans_read_mem_bytes(priv->trans, base,
476 &err_info, sizeof(err_info));
478 if (err_info.valid) {
479 IWL_INFO(priv, "error table is valid (%d, 0x%x)\n",
480 err_info.valid, err_info.error_id);
481 if (err_info.error_id == RF_KILL_INDICATOR_FOR_WOWLAN) {
482 wakeup.rfkill_release = true;
483 ieee80211_report_wowlan_wakeup(vif, &wakeup,
489 #ifdef CONFIG_IWLWIFI_DEBUGFS
490 img = &priv->fw->img[IWL_UCODE_WOWLAN];
491 if (!priv->wowlan_sram)
493 kzalloc(img->sec[IWL_UCODE_SECTION_DATA].len,
496 if (priv->wowlan_sram)
497 iwl_trans_read_mem(priv->trans, 0x800000,
499 img->sec[IWL_UCODE_SECTION_DATA].len / 4);
503 * This is very strange. The GET_STATUS command is sent but the device
504 * doesn't reply properly, it seems it doesn't close the RBD so one is
505 * always left open ... As a result, we need to send another command
506 * and have to reset the driver afterwards. As we need to switch to
507 * runtime firmware again that'll happen.
510 iwl_init_notification_wait(&priv->notif_wait, &status_wait, status_cmd,
511 ARRAY_SIZE(status_cmd), iwl_resume_status_fn,
514 iwl_dvm_send_cmd_pdu(priv, REPLY_WOWLAN_GET_STATUS, CMD_ASYNC, 0, NULL);
515 iwl_dvm_send_cmd_pdu(priv, REPLY_ECHO, CMD_ASYNC, 0, NULL);
516 /* an RBD is left open in the firmware now! */
518 ret = iwl_wait_notification(&priv->notif_wait, &status_wait, HZ/5);
522 if (resume_data.valid && priv->contexts[IWL_RXON_CTX_BSS].vif) {
523 u32 reasons = le32_to_cpu(status_data.wakeup_reason);
524 struct cfg80211_wowlan_wakeup *wakeup_report;
526 IWL_INFO(priv, "WoWLAN wakeup reason(s): 0x%.8x\n", reasons);
529 if (reasons & IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET)
530 wakeup.magic_pkt = true;
531 if (reasons & IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH)
532 wakeup.pattern_idx = status_data.pattern_number;
533 if (reasons & (IWLAGN_WOWLAN_WAKEUP_BEACON_MISS |
534 IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE))
535 wakeup.disconnect = true;
536 if (reasons & IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL)
537 wakeup.gtk_rekey_failure = true;
538 if (reasons & IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ)
539 wakeup.eap_identity_req = true;
540 if (reasons & IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE)
541 wakeup.four_way_handshake = true;
542 wakeup_report = &wakeup;
544 wakeup_report = NULL;
547 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
550 priv->wowlan = false;
552 iwlagn_prepare_restart(priv);
554 memset((void *)&ctx->active, 0, sizeof(ctx->active));
555 iwl_connection_init_rx_config(priv, ctx);
556 iwlagn_set_rxon_chain(priv, ctx);
559 mutex_unlock(&priv->mutex);
560 IWL_DEBUG_MAC80211(priv, "leave\n");
562 ieee80211_resume_disconnect(vif);
567 static void iwlagn_mac_set_wakeup(struct ieee80211_hw *hw, bool enabled)
569 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
571 device_set_wakeup_enable(priv->trans->dev, enabled);
575 static void iwlagn_mac_tx(struct ieee80211_hw *hw,
576 struct ieee80211_tx_control *control,
579 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
581 if (iwlagn_tx_skb(priv, control->sta, skb))
582 ieee80211_free_txskb(hw, skb);
585 static void iwlagn_mac_update_tkip_key(struct ieee80211_hw *hw,
586 struct ieee80211_vif *vif,
587 struct ieee80211_key_conf *keyconf,
588 struct ieee80211_sta *sta,
589 u32 iv32, u16 *phase1key)
591 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
593 iwl_update_tkip_key(priv, vif, keyconf, sta, iv32, phase1key);
596 static int iwlagn_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
597 struct ieee80211_vif *vif,
598 struct ieee80211_sta *sta,
599 struct ieee80211_key_conf *key)
601 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
602 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
603 struct iwl_rxon_context *ctx = vif_priv->ctx;
605 bool is_default_wep_key = false;
607 IWL_DEBUG_MAC80211(priv, "enter\n");
609 if (iwlwifi_mod_params.sw_crypto) {
610 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
614 switch (key->cipher) {
615 case WLAN_CIPHER_SUITE_TKIP:
616 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
618 case WLAN_CIPHER_SUITE_CCMP:
619 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
626 * We could program these keys into the hardware as well, but we
627 * don't expect much multicast traffic in IBSS and having keys
628 * for more stations is probably more useful.
630 * Mark key TX-only and return 0.
632 if (vif->type == NL80211_IFTYPE_ADHOC &&
633 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
634 key->hw_key_idx = WEP_INVALID_OFFSET;
638 /* If they key was TX-only, accept deletion */
639 if (cmd == DISABLE_KEY && key->hw_key_idx == WEP_INVALID_OFFSET)
642 mutex_lock(&priv->mutex);
643 iwl_scan_cancel_timeout(priv, 100);
645 BUILD_BUG_ON(WEP_INVALID_OFFSET == IWLAGN_HW_KEY_DEFAULT);
648 * If we are getting WEP group key and we didn't receive any key mapping
649 * so far, we are in legacy wep mode (group key only), otherwise we are
651 * In legacy wep mode, we use another host command to the uCode.
653 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
654 key->cipher == WLAN_CIPHER_SUITE_WEP104) && !sta) {
656 is_default_wep_key = !ctx->key_mapping_keys;
659 key->hw_key_idx == IWLAGN_HW_KEY_DEFAULT;
665 if (is_default_wep_key) {
666 ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
669 ret = iwl_set_dynamic_key(priv, vif_priv->ctx, key, sta);
672 * can't add key for RX, but we don't need it
673 * in the device for TX so still return 0
676 key->hw_key_idx = WEP_INVALID_OFFSET;
679 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
682 if (is_default_wep_key)
683 ret = iwl_remove_default_wep_key(priv, ctx, key);
685 ret = iwl_remove_dynamic_key(priv, ctx, key, sta);
687 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
693 mutex_unlock(&priv->mutex);
694 IWL_DEBUG_MAC80211(priv, "leave\n");
699 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
701 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
706 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
708 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
710 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
713 /* disabled by default */
717 static int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw,
718 struct ieee80211_vif *vif,
719 enum ieee80211_ampdu_mlme_action action,
720 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
723 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
725 struct iwl_station_priv *sta_priv = (void *) sta->drv_priv;
727 IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
730 if (!(priv->nvm_data->sku_cap_11n_enable))
733 IWL_DEBUG_MAC80211(priv, "enter\n");
734 mutex_lock(&priv->mutex);
737 case IEEE80211_AMPDU_RX_START:
738 if (!iwl_enable_rx_ampdu(priv->cfg))
740 IWL_DEBUG_HT(priv, "start Rx\n");
741 ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
743 case IEEE80211_AMPDU_RX_STOP:
744 IWL_DEBUG_HT(priv, "stop Rx\n");
745 ret = iwl_sta_rx_agg_stop(priv, sta, tid);
747 case IEEE80211_AMPDU_TX_START:
748 if (!priv->trans->ops->txq_enable)
750 if (!iwl_enable_tx_ampdu(priv->cfg))
752 IWL_DEBUG_HT(priv, "start Tx\n");
753 ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
755 case IEEE80211_AMPDU_TX_STOP_FLUSH:
756 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
757 IWL_DEBUG_HT(priv, "Flush Tx\n");
758 ret = iwlagn_tx_agg_flush(priv, vif, sta, tid);
760 case IEEE80211_AMPDU_TX_STOP_CONT:
761 IWL_DEBUG_HT(priv, "stop Tx\n");
762 ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
763 if ((ret == 0) && (priv->agg_tids_count > 0)) {
764 priv->agg_tids_count--;
765 IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
766 priv->agg_tids_count);
768 if (!priv->agg_tids_count &&
769 priv->hw_params.use_rts_for_aggregation) {
771 * switch off RTS/CTS if it was previously enabled
773 sta_priv->lq_sta.lq.general_params.flags &=
774 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
775 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
776 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
779 case IEEE80211_AMPDU_TX_OPERATIONAL:
780 ret = iwlagn_tx_agg_oper(priv, vif, sta, tid, buf_size);
783 mutex_unlock(&priv->mutex);
784 IWL_DEBUG_MAC80211(priv, "leave\n");
788 static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
789 struct ieee80211_vif *vif,
790 struct ieee80211_sta *sta)
792 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
793 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
794 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
795 bool is_ap = vif->type == NL80211_IFTYPE_STATION;
799 IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
801 sta_priv->sta_id = IWL_INVALID_STATION;
803 atomic_set(&sta_priv->pending_frames, 0);
804 if (vif->type == NL80211_IFTYPE_AP)
805 sta_priv->client = true;
807 ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
808 is_ap, sta, &sta_id);
810 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
812 /* Should we return success if return code is EEXIST ? */
816 sta_priv->sta_id = sta_id;
821 static int iwlagn_mac_sta_remove(struct ieee80211_hw *hw,
822 struct ieee80211_vif *vif,
823 struct ieee80211_sta *sta)
825 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
826 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
829 IWL_DEBUG_INFO(priv, "proceeding to remove station %pM\n", sta->addr);
831 if (vif->type == NL80211_IFTYPE_STATION) {
833 * Station will be removed from device when the RXON
834 * is set to unassociated -- just deactivate it here
835 * to avoid re-programming it.
838 iwl_deactivate_station(priv, sta_priv->sta_id, sta->addr);
840 ret = iwl_remove_station(priv, sta_priv->sta_id, sta->addr);
842 IWL_DEBUG_QUIET_RFKILL(priv,
843 "Error removing station %pM\n", sta->addr);
848 static int iwlagn_mac_sta_state(struct ieee80211_hw *hw,
849 struct ieee80211_vif *vif,
850 struct ieee80211_sta *sta,
851 enum ieee80211_sta_state old_state,
852 enum ieee80211_sta_state new_state)
854 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
855 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
857 NONE, ADD, REMOVE, HT_RATE_INIT, ADD_RATE_INIT,
861 IWL_DEBUG_MAC80211(priv, "station %pM state change %d->%d\n",
862 sta->addr, old_state, new_state);
864 mutex_lock(&priv->mutex);
865 if (vif->type == NL80211_IFTYPE_STATION) {
866 if (old_state == IEEE80211_STA_NOTEXIST &&
867 new_state == IEEE80211_STA_NONE)
869 else if (old_state == IEEE80211_STA_NONE &&
870 new_state == IEEE80211_STA_NOTEXIST)
872 else if (old_state == IEEE80211_STA_AUTH &&
873 new_state == IEEE80211_STA_ASSOC)
876 if (old_state == IEEE80211_STA_AUTH &&
877 new_state == IEEE80211_STA_ASSOC)
879 else if (old_state == IEEE80211_STA_ASSOC &&
880 new_state == IEEE80211_STA_AUTH)
886 ret = iwlagn_mac_sta_add(hw, vif, sta);
890 * Clear the in-progress flag, the AP station entry was added
891 * but we'll initialize LQ only when we've associated (which
892 * would also clear the in-progress flag). This is necessary
893 * in case we never initialize LQ because association fails.
895 spin_lock_bh(&priv->sta_lock);
896 priv->stations[iwl_sta_id(sta)].used &=
897 ~IWL_STA_UCODE_INPROGRESS;
898 spin_unlock_bh(&priv->sta_lock);
901 ret = iwlagn_mac_sta_remove(hw, vif, sta);
904 ret = iwlagn_mac_sta_add(hw, vif, sta);
907 /* Initialize rate scaling */
909 "Initializing rate scaling for station %pM\n",
911 iwl_rs_rate_init(priv, sta, iwl_sta_id(sta));
915 /* Initialize rate scaling */
916 ret = iwl_sta_update_ht(priv, vif_priv->ctx, sta);
920 "Initializing rate scaling for station %pM\n",
922 iwl_rs_rate_init(priv, sta, iwl_sta_id(sta));
931 * mac80211 might WARN if we fail, but due the way we
932 * (badly) handle hard rfkill, we might fail here
934 if (iwl_is_rfkill(priv))
937 mutex_unlock(&priv->mutex);
938 IWL_DEBUG_MAC80211(priv, "leave\n");
943 static void iwlagn_mac_channel_switch(struct ieee80211_hw *hw,
944 struct ieee80211_vif *vif,
945 struct ieee80211_channel_switch *ch_switch)
947 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
948 struct ieee80211_conf *conf = &hw->conf;
949 struct ieee80211_channel *channel = ch_switch->chandef.chan;
950 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
953 * When we add support for multiple interfaces, we need to
954 * revisit this. The channel switch command in the device
955 * only affects the BSS context, but what does that really
956 * mean? And what if we get a CSA on the second interface?
957 * This needs a lot of work.
959 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
962 IWL_DEBUG_MAC80211(priv, "enter\n");
964 mutex_lock(&priv->mutex);
966 if (iwl_is_rfkill(priv))
969 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
970 test_bit(STATUS_SCANNING, &priv->status) ||
971 test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status))
974 if (!iwl_is_associated_ctx(ctx))
977 if (!priv->lib->set_channel_switch)
980 ch = channel->hw_value;
981 if (le16_to_cpu(ctx->active.channel) == ch)
984 priv->current_ht_config.smps = conf->smps_mode;
986 /* Configure HT40 channels */
987 switch (cfg80211_get_chandef_type(&ch_switch->chandef)) {
988 case NL80211_CHAN_NO_HT:
989 case NL80211_CHAN_HT20:
990 ctx->ht.is_40mhz = false;
991 ctx->ht.extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
993 case NL80211_CHAN_HT40MINUS:
994 ctx->ht.extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
995 ctx->ht.is_40mhz = true;
997 case NL80211_CHAN_HT40PLUS:
998 ctx->ht.extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
999 ctx->ht.is_40mhz = true;
1003 if ((le16_to_cpu(ctx->staging.channel) != ch))
1004 ctx->staging.flags = 0;
1006 iwl_set_rxon_channel(priv, channel, ctx);
1007 iwl_set_rxon_ht(priv, ht_conf);
1008 iwl_set_flags_for_band(priv, ctx, channel->band, ctx->vif);
1011 * at this point, staging_rxon has the
1012 * configuration for channel switch
1014 set_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
1015 priv->switch_channel = cpu_to_le16(ch);
1016 if (priv->lib->set_channel_switch(priv, ch_switch)) {
1017 clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
1018 priv->switch_channel = 0;
1019 ieee80211_chswitch_done(ctx->vif, false);
1023 mutex_unlock(&priv->mutex);
1024 IWL_DEBUG_MAC80211(priv, "leave\n");
1027 void iwl_chswitch_done(struct iwl_priv *priv, bool is_success)
1031 * See iwlagn_mac_channel_switch.
1033 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1035 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1038 if (!test_and_clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status))
1042 ieee80211_chswitch_done(ctx->vif, is_success);
1045 static void iwlagn_configure_filter(struct ieee80211_hw *hw,
1046 unsigned int changed_flags,
1047 unsigned int *total_flags,
1050 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1051 __le32 filter_or = 0, filter_nand = 0;
1052 struct iwl_rxon_context *ctx;
1054 #define CHK(test, flag) do { \
1055 if (*total_flags & (test)) \
1056 filter_or |= (flag); \
1058 filter_nand |= (flag); \
1061 IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
1062 changed_flags, *total_flags);
1064 CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
1065 /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
1066 CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK);
1067 CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
1071 mutex_lock(&priv->mutex);
1073 for_each_context(priv, ctx) {
1074 ctx->staging.filter_flags &= ~filter_nand;
1075 ctx->staging.filter_flags |= filter_or;
1078 * Not committing directly because hardware can perform a scan,
1079 * but we'll eventually commit the filter flags change anyway.
1083 mutex_unlock(&priv->mutex);
1086 * Receiving all multicast frames is always enabled by the
1087 * default flags setup in iwl_connection_init_rx_config()
1088 * since we currently do not support programming multicast
1089 * filters into the device.
1091 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
1092 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
1095 static void iwlagn_mac_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1096 u32 queues, bool drop)
1098 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1101 mutex_lock(&priv->mutex);
1102 IWL_DEBUG_MAC80211(priv, "enter\n");
1104 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1105 IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
1108 if (iwl_is_rfkill(priv)) {
1109 IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
1113 scd_queues = BIT(priv->cfg->base_params->num_of_queues) - 1;
1114 scd_queues &= ~(BIT(IWL_IPAN_CMD_QUEUE_NUM) |
1115 BIT(IWL_DEFAULT_CMD_QUEUE_NUM));
1118 scd_queues &= ~BIT(vif->hw_queue[IEEE80211_AC_VO]);
1120 IWL_DEBUG_TX_QUEUES(priv, "Flushing SCD queues: 0x%x\n", scd_queues);
1121 if (iwlagn_txfifo_flush(priv, scd_queues)) {
1122 IWL_ERR(priv, "flush request fail\n");
1125 IWL_DEBUG_TX_QUEUES(priv, "wait transmit/flush all frames\n");
1126 iwl_trans_wait_tx_queue_empty(priv->trans, 0xffffffff);
1128 mutex_unlock(&priv->mutex);
1129 IWL_DEBUG_MAC80211(priv, "leave\n");
1132 static void iwlagn_mac_rssi_callback(struct ieee80211_hw *hw,
1133 struct ieee80211_vif *vif,
1134 enum ieee80211_rssi_event rssi_event)
1136 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1138 IWL_DEBUG_MAC80211(priv, "enter\n");
1139 mutex_lock(&priv->mutex);
1141 if (priv->lib->bt_params &&
1142 priv->lib->bt_params->advanced_bt_coexist) {
1143 if (rssi_event == RSSI_EVENT_LOW)
1144 priv->bt_enable_pspoll = true;
1145 else if (rssi_event == RSSI_EVENT_HIGH)
1146 priv->bt_enable_pspoll = false;
1148 iwlagn_send_advance_bt_config(priv);
1150 IWL_DEBUG_MAC80211(priv, "Advanced BT coex disabled,"
1151 "ignoring RSSI callback\n");
1154 mutex_unlock(&priv->mutex);
1155 IWL_DEBUG_MAC80211(priv, "leave\n");
1158 static int iwlagn_mac_set_tim(struct ieee80211_hw *hw,
1159 struct ieee80211_sta *sta, bool set)
1161 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1163 queue_work(priv->workqueue, &priv->beacon_update);
1168 static int iwlagn_mac_conf_tx(struct ieee80211_hw *hw,
1169 struct ieee80211_vif *vif, u16 queue,
1170 const struct ieee80211_tx_queue_params *params)
1172 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1173 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
1174 struct iwl_rxon_context *ctx = vif_priv->ctx;
1180 IWL_DEBUG_MAC80211(priv, "enter\n");
1182 if (!iwl_is_ready_rf(priv)) {
1183 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
1187 if (queue >= AC_NUM) {
1188 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
1192 q = AC_NUM - 1 - queue;
1194 mutex_lock(&priv->mutex);
1196 ctx->qos_data.def_qos_parm.ac[q].cw_min =
1197 cpu_to_le16(params->cw_min);
1198 ctx->qos_data.def_qos_parm.ac[q].cw_max =
1199 cpu_to_le16(params->cw_max);
1200 ctx->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
1201 ctx->qos_data.def_qos_parm.ac[q].edca_txop =
1202 cpu_to_le16((params->txop * 32));
1204 ctx->qos_data.def_qos_parm.ac[q].reserved1 = 0;
1206 mutex_unlock(&priv->mutex);
1208 IWL_DEBUG_MAC80211(priv, "leave\n");
1212 static int iwlagn_mac_tx_last_beacon(struct ieee80211_hw *hw)
1214 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1216 return priv->ibss_manager == IWL_IBSS_MANAGER;
1219 static int iwl_set_mode(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
1221 iwl_connection_init_rx_config(priv, ctx);
1223 iwlagn_set_rxon_chain(priv, ctx);
1225 return iwlagn_commit_rxon(priv, ctx);
1228 static int iwl_setup_interface(struct iwl_priv *priv,
1229 struct iwl_rxon_context *ctx)
1231 struct ieee80211_vif *vif = ctx->vif;
1234 lockdep_assert_held(&priv->mutex);
1237 * This variable will be correct only when there's just
1238 * a single context, but all code using it is for hardware
1239 * that supports only one context.
1241 priv->iw_mode = vif->type;
1243 ctx->is_active = true;
1245 err = iwl_set_mode(priv, ctx);
1247 if (!ctx->always_active)
1248 ctx->is_active = false;
1252 if (priv->lib->bt_params && priv->lib->bt_params->advanced_bt_coexist &&
1253 vif->type == NL80211_IFTYPE_ADHOC) {
1255 * pretend to have high BT traffic as long as we
1256 * are operating in IBSS mode, as this will cause
1257 * the rate scaling etc. to behave as intended.
1259 priv->bt_traffic_load = IWL_BT_COEX_TRAFFIC_LOAD_HIGH;
1262 /* set up queue mappings */
1263 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
1264 vif->hw_queue[ac] = ctx->ac_to_queue[ac];
1266 if (vif->type == NL80211_IFTYPE_AP)
1267 vif->cab_queue = ctx->mcast_queue;
1269 vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
1274 static int iwlagn_mac_add_interface(struct ieee80211_hw *hw,
1275 struct ieee80211_vif *vif)
1277 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1278 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
1279 struct iwl_rxon_context *tmp, *ctx = NULL;
1281 enum nl80211_iftype viftype = ieee80211_vif_type_p2p(vif);
1284 IWL_DEBUG_MAC80211(priv, "enter: type %d, addr %pM\n",
1285 viftype, vif->addr);
1287 mutex_lock(&priv->mutex);
1289 if (!iwl_is_ready_rf(priv)) {
1290 IWL_WARN(priv, "Try to add interface when device not ready\n");
1295 for_each_context(priv, tmp) {
1296 u32 possible_modes =
1297 tmp->interface_modes | tmp->exclusive_interface_modes;
1300 /* On reset we need to add the same interface again */
1301 if (tmp->vif == vif) {
1307 /* check if this busy context is exclusive */
1308 if (tmp->exclusive_interface_modes &
1309 BIT(tmp->vif->type)) {
1316 if (!(possible_modes & BIT(viftype)))
1319 /* have maybe usable context w/o interface */
1329 vif_priv->ctx = ctx;
1333 * In SNIFFER device type, the firmware reports the FCS to
1334 * the host, rather than snipping it off. Unfortunately,
1335 * mac80211 doesn't (yet) provide a per-packet flag for
1336 * this, so that we have to set the hardware flag based
1337 * on the interfaces added. As the monitor interface can
1338 * only be present by itself, and will be removed before
1339 * other interfaces are added, this is safe.
1341 if (vif->type == NL80211_IFTYPE_MONITOR)
1342 priv->hw->flags |= IEEE80211_HW_RX_INCLUDES_FCS;
1344 priv->hw->flags &= ~IEEE80211_HW_RX_INCLUDES_FCS;
1346 err = iwl_setup_interface(priv, ctx);
1351 priv->iw_mode = NL80211_IFTYPE_STATION;
1353 mutex_unlock(&priv->mutex);
1355 IWL_DEBUG_MAC80211(priv, "leave\n");
1359 static void iwl_teardown_interface(struct iwl_priv *priv,
1360 struct ieee80211_vif *vif,
1363 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1365 lockdep_assert_held(&priv->mutex);
1367 if (priv->scan_vif == vif) {
1368 iwl_scan_cancel_timeout(priv, 200);
1369 iwl_force_scan_end(priv);
1373 iwl_set_mode(priv, ctx);
1374 if (!ctx->always_active)
1375 ctx->is_active = false;
1379 * When removing the IBSS interface, overwrite the
1380 * BT traffic load with the stored one from the last
1381 * notification, if any. If this is a device that
1382 * doesn't implement this, this has no effect since
1383 * both values are the same and zero.
1385 if (vif->type == NL80211_IFTYPE_ADHOC)
1386 priv->bt_traffic_load = priv->last_bt_traffic_load;
1389 static void iwlagn_mac_remove_interface(struct ieee80211_hw *hw,
1390 struct ieee80211_vif *vif)
1392 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1393 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1395 IWL_DEBUG_MAC80211(priv, "enter\n");
1397 mutex_lock(&priv->mutex);
1399 if (WARN_ON(ctx->vif != vif)) {
1400 struct iwl_rxon_context *tmp;
1401 IWL_ERR(priv, "ctx->vif = %p, vif = %p\n", ctx->vif, vif);
1402 for_each_context(priv, tmp)
1403 IWL_ERR(priv, "\tID = %d:\tctx = %p\tctx->vif = %p\n",
1404 tmp->ctxid, tmp, tmp->vif);
1408 iwl_teardown_interface(priv, vif, false);
1410 mutex_unlock(&priv->mutex);
1412 IWL_DEBUG_MAC80211(priv, "leave\n");
1416 static int iwlagn_mac_change_interface(struct ieee80211_hw *hw,
1417 struct ieee80211_vif *vif,
1418 enum nl80211_iftype newtype, bool newp2p)
1420 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1421 struct iwl_rxon_context *ctx, *tmp;
1422 enum nl80211_iftype newviftype = newtype;
1423 u32 interface_modes;
1426 IWL_DEBUG_MAC80211(priv, "enter\n");
1428 newtype = ieee80211_iftype_p2p(newtype, newp2p);
1430 mutex_lock(&priv->mutex);
1432 ctx = iwl_rxon_ctx_from_vif(vif);
1435 * To simplify this code, only support changes on the
1436 * BSS context. The PAN context is usually reassigned
1437 * by creating/removing P2P interfaces anyway.
1439 if (ctx->ctxid != IWL_RXON_CTX_BSS) {
1444 if (!ctx->vif || !iwl_is_ready_rf(priv)) {
1446 * Huh? But wait ... this can maybe happen when
1447 * we're in the middle of a firmware restart!
1453 /* Check if the switch is supported in the same context */
1454 interface_modes = ctx->interface_modes | ctx->exclusive_interface_modes;
1455 if (!(interface_modes & BIT(newtype))) {
1460 if (ctx->exclusive_interface_modes & BIT(newtype)) {
1461 for_each_context(priv, tmp) {
1465 if (!tmp->is_active)
1469 * The current mode switch would be exclusive, but
1470 * another context is active ... refuse the switch.
1478 iwl_teardown_interface(priv, vif, true);
1479 vif->type = newviftype;
1481 err = iwl_setup_interface(priv, ctx);
1484 * We've switched internally, but submitting to the
1485 * device may have failed for some reason. Mask this
1486 * error, because otherwise mac80211 will not switch
1487 * (and set the interface type back) and we'll be
1488 * out of sync with it.
1493 mutex_unlock(&priv->mutex);
1494 IWL_DEBUG_MAC80211(priv, "leave\n");
1499 static int iwlagn_mac_hw_scan(struct ieee80211_hw *hw,
1500 struct ieee80211_vif *vif,
1501 struct ieee80211_scan_request *hw_req)
1503 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1504 struct cfg80211_scan_request *req = &hw_req->req;
1507 IWL_DEBUG_MAC80211(priv, "enter\n");
1509 if (req->n_channels == 0)
1512 mutex_lock(&priv->mutex);
1515 * If an internal scan is in progress, just set
1516 * up the scan_request as per above.
1518 if (priv->scan_type != IWL_SCAN_NORMAL) {
1519 IWL_DEBUG_SCAN(priv,
1520 "SCAN request during internal scan - defer\n");
1521 priv->scan_request = req;
1522 priv->scan_vif = vif;
1525 priv->scan_request = req;
1526 priv->scan_vif = vif;
1528 * mac80211 will only ask for one band at a time
1529 * so using channels[0] here is ok
1531 ret = iwl_scan_initiate(priv, vif, IWL_SCAN_NORMAL,
1532 req->channels[0]->band);
1534 priv->scan_request = NULL;
1535 priv->scan_vif = NULL;
1539 IWL_DEBUG_MAC80211(priv, "leave\n");
1541 mutex_unlock(&priv->mutex);
1546 static void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id)
1548 struct iwl_addsta_cmd cmd = {
1549 .mode = STA_CONTROL_MODIFY_MSK,
1550 .station_flags_msk = STA_FLG_PWR_SAVE_MSK,
1551 .sta.sta_id = sta_id,
1554 iwl_send_add_sta(priv, &cmd, CMD_ASYNC);
1557 static void iwlagn_mac_sta_notify(struct ieee80211_hw *hw,
1558 struct ieee80211_vif *vif,
1559 enum sta_notify_cmd cmd,
1560 struct ieee80211_sta *sta)
1562 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1563 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
1566 IWL_DEBUG_MAC80211(priv, "enter\n");
1569 case STA_NOTIFY_SLEEP:
1570 WARN_ON(!sta_priv->client);
1571 sta_priv->asleep = true;
1572 if (atomic_read(&sta_priv->pending_frames) > 0)
1573 ieee80211_sta_block_awake(hw, sta, true);
1575 case STA_NOTIFY_AWAKE:
1576 WARN_ON(!sta_priv->client);
1577 if (!sta_priv->asleep)
1579 sta_priv->asleep = false;
1580 sta_id = iwl_sta_id(sta);
1581 if (sta_id != IWL_INVALID_STATION)
1582 iwl_sta_modify_ps_wake(priv, sta_id);
1587 IWL_DEBUG_MAC80211(priv, "leave\n");
1590 const struct ieee80211_ops iwlagn_hw_ops = {
1591 .tx = iwlagn_mac_tx,
1592 .start = iwlagn_mac_start,
1593 .stop = iwlagn_mac_stop,
1594 #ifdef CONFIG_PM_SLEEP
1595 .suspend = iwlagn_mac_suspend,
1596 .resume = iwlagn_mac_resume,
1597 .set_wakeup = iwlagn_mac_set_wakeup,
1599 .add_interface = iwlagn_mac_add_interface,
1600 .remove_interface = iwlagn_mac_remove_interface,
1601 .change_interface = iwlagn_mac_change_interface,
1602 .config = iwlagn_mac_config,
1603 .configure_filter = iwlagn_configure_filter,
1604 .set_key = iwlagn_mac_set_key,
1605 .update_tkip_key = iwlagn_mac_update_tkip_key,
1606 .set_rekey_data = iwlagn_mac_set_rekey_data,
1607 .conf_tx = iwlagn_mac_conf_tx,
1608 .bss_info_changed = iwlagn_bss_info_changed,
1609 .ampdu_action = iwlagn_mac_ampdu_action,
1610 .hw_scan = iwlagn_mac_hw_scan,
1611 .sta_notify = iwlagn_mac_sta_notify,
1612 .sta_state = iwlagn_mac_sta_state,
1613 .channel_switch = iwlagn_mac_channel_switch,
1614 .flush = iwlagn_mac_flush,
1615 .tx_last_beacon = iwlagn_mac_tx_last_beacon,
1616 .rssi_callback = iwlagn_mac_rssi_callback,
1617 .set_tim = iwlagn_mac_set_tim,
1620 /* This function both allocates and initializes hw and priv. */
1621 struct ieee80211_hw *iwl_alloc_all(void)
1623 struct iwl_priv *priv;
1624 struct iwl_op_mode *op_mode;
1625 /* mac80211 allocates memory for this device instance, including
1626 * space for this driver's private structure */
1627 struct ieee80211_hw *hw;
1629 hw = ieee80211_alloc_hw(sizeof(struct iwl_priv) +
1630 sizeof(struct iwl_op_mode), &iwlagn_hw_ops);
1635 priv = IWL_OP_MODE_GET_DVM(op_mode);