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 |
155 IEEE80211_HW_SCAN_WHILE_IDLE;
157 hw->offchannel_tx_hw_queue = IWL_AUX_QUEUE;
158 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FMT;
161 * Including the following line will crash some AP's. This
162 * workaround removes the stimulus which causes the crash until
163 * the AP software can be fixed.
164 hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
167 if (priv->nvm_data->sku_cap_11n_enable)
168 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
169 IEEE80211_HW_SUPPORTS_STATIC_SMPS;
172 * Enable 11w if advertised by firmware and software crypto
173 * is not enabled (as the firmware will interpret some mgmt
174 * packets, so enabling it with software crypto isn't safe)
176 if (priv->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
177 !iwlwifi_mod_params.sw_crypto)
178 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
180 hw->sta_data_size = sizeof(struct iwl_station_priv);
181 hw->vif_data_size = sizeof(struct iwl_vif_priv);
183 for_each_context(priv, ctx) {
184 hw->wiphy->interface_modes |= ctx->interface_modes;
185 hw->wiphy->interface_modes |= ctx->exclusive_interface_modes;
188 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
190 if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)) {
191 hw->wiphy->iface_combinations = iwlagn_iface_combinations_p2p;
192 hw->wiphy->n_iface_combinations =
193 ARRAY_SIZE(iwlagn_iface_combinations_p2p);
194 } else if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
195 hw->wiphy->iface_combinations =
196 iwlagn_iface_combinations_dualmode;
197 hw->wiphy->n_iface_combinations =
198 ARRAY_SIZE(iwlagn_iface_combinations_dualmode);
201 hw->wiphy->max_remain_on_channel_duration = 500;
203 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
204 WIPHY_FLAG_DISABLE_BEACON_HINTS |
207 #ifdef CONFIG_PM_SLEEP
208 if (priv->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
209 priv->trans->ops->d3_suspend &&
210 priv->trans->ops->d3_resume &&
211 device_can_wakeup(priv->trans->dev)) {
212 hw->wiphy->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
213 WIPHY_WOWLAN_DISCONNECT |
214 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
215 WIPHY_WOWLAN_RFKILL_RELEASE;
216 if (!iwlwifi_mod_params.sw_crypto)
217 hw->wiphy->wowlan.flags |=
218 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
219 WIPHY_WOWLAN_GTK_REKEY_FAILURE;
221 hw->wiphy->wowlan.n_patterns = IWLAGN_WOWLAN_MAX_PATTERNS;
222 hw->wiphy->wowlan.pattern_min_len =
223 IWLAGN_WOWLAN_MIN_PATTERN_LEN;
224 hw->wiphy->wowlan.pattern_max_len =
225 IWLAGN_WOWLAN_MAX_PATTERN_LEN;
229 if (iwlwifi_mod_params.power_save)
230 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
232 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
234 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
235 /* we create the 802.11 header and a max-length SSID element */
236 hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 34;
239 * We don't use all queues: 4 and 9 are unused and any
240 * aggregation queue gets mapped down to the AC queue.
242 hw->queues = IWLAGN_FIRST_AMPDU_QUEUE;
244 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
246 if (priv->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
247 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
248 &priv->nvm_data->bands[IEEE80211_BAND_2GHZ];
249 if (priv->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
250 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
251 &priv->nvm_data->bands[IEEE80211_BAND_5GHZ];
253 hw->wiphy->hw_version = priv->trans->hw_id;
257 ret = ieee80211_register_hw(priv->hw);
259 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
263 priv->mac80211_registered = 1;
268 void iwlagn_mac_unregister(struct iwl_priv *priv)
270 if (!priv->mac80211_registered)
273 ieee80211_unregister_hw(priv->hw);
274 priv->mac80211_registered = 0;
277 static int __iwl_up(struct iwl_priv *priv)
279 struct iwl_rxon_context *ctx;
282 lockdep_assert_held(&priv->mutex);
284 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
285 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
289 for_each_context(priv, ctx) {
290 ret = iwlagn_alloc_bcast_station(priv, ctx);
292 iwl_dealloc_bcast_stations(priv);
297 ret = iwl_run_init_ucode(priv);
299 IWL_ERR(priv, "Failed to run INIT ucode: %d\n", ret);
303 ret = iwl_load_ucode_wait_alive(priv, IWL_UCODE_REGULAR);
305 IWL_ERR(priv, "Failed to start RT ucode: %d\n", ret);
309 ret = iwl_alive_start(priv);
315 set_bit(STATUS_EXIT_PENDING, &priv->status);
317 clear_bit(STATUS_EXIT_PENDING, &priv->status);
319 IWL_ERR(priv, "Unable to initialize device.\n");
323 static int iwlagn_mac_start(struct ieee80211_hw *hw)
325 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
328 IWL_DEBUG_MAC80211(priv, "enter\n");
330 /* we should be verifying the device is ready to be opened */
331 mutex_lock(&priv->mutex);
332 ret = __iwl_up(priv);
333 mutex_unlock(&priv->mutex);
337 IWL_DEBUG_INFO(priv, "Start UP work done.\n");
339 /* Now we should be done, and the READY bit should be set. */
340 if (WARN_ON(!test_bit(STATUS_READY, &priv->status)))
343 iwlagn_led_enable(priv);
346 IWL_DEBUG_MAC80211(priv, "leave\n");
350 static void iwlagn_mac_stop(struct ieee80211_hw *hw)
352 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
354 IWL_DEBUG_MAC80211(priv, "enter\n");
361 mutex_lock(&priv->mutex);
363 mutex_unlock(&priv->mutex);
365 iwl_cancel_deferred_work(priv);
367 flush_workqueue(priv->workqueue);
369 /* User space software may expect getting rfkill changes
370 * even if interface is down, trans->down will leave the RF
371 * kill interrupt enabled
373 iwl_trans_stop_hw(priv->trans, false);
375 IWL_DEBUG_MAC80211(priv, "leave\n");
378 static void iwlagn_mac_set_rekey_data(struct ieee80211_hw *hw,
379 struct ieee80211_vif *vif,
380 struct cfg80211_gtk_rekey_data *data)
382 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
384 if (iwlwifi_mod_params.sw_crypto)
387 IWL_DEBUG_MAC80211(priv, "enter\n");
388 mutex_lock(&priv->mutex);
390 if (priv->contexts[IWL_RXON_CTX_BSS].vif != vif)
393 memcpy(priv->kek, data->kek, NL80211_KEK_LEN);
394 memcpy(priv->kck, data->kck, NL80211_KCK_LEN);
396 cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr));
397 priv->have_rekey_data = true;
400 mutex_unlock(&priv->mutex);
401 IWL_DEBUG_MAC80211(priv, "leave\n");
404 #ifdef CONFIG_PM_SLEEP
406 static int iwlagn_mac_suspend(struct ieee80211_hw *hw,
407 struct cfg80211_wowlan *wowlan)
409 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
410 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
413 if (WARN_ON(!wowlan))
416 IWL_DEBUG_MAC80211(priv, "enter\n");
417 mutex_lock(&priv->mutex);
419 /* Don't attempt WoWLAN when not associated, tear down instead. */
420 if (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION ||
421 !iwl_is_associated_ctx(ctx)) {
426 ret = iwlagn_suspend(priv, wowlan);
430 iwl_trans_d3_suspend(priv->trans);
435 priv->wowlan = false;
436 iwlagn_prepare_restart(priv);
437 ieee80211_restart_hw(priv->hw);
439 mutex_unlock(&priv->mutex);
440 IWL_DEBUG_MAC80211(priv, "leave\n");
445 static int iwlagn_mac_resume(struct ieee80211_hw *hw)
447 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
448 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
449 struct ieee80211_vif *vif;
451 u32 base, status = 0xffffffff;
454 IWL_DEBUG_MAC80211(priv, "enter\n");
455 mutex_lock(&priv->mutex);
457 iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_CLR,
458 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
460 base = priv->device_pointers.error_event_table;
461 if (iwlagn_hw_valid_rtc_data_addr(base)) {
462 if (iwl_trans_grab_nic_access(priv->trans, true, &flags)) {
463 iwl_write32(priv->trans, HBUS_TARG_MEM_RADDR, base);
464 status = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
465 iwl_trans_release_nic_access(priv->trans, &flags);
469 #ifdef CONFIG_IWLWIFI_DEBUGFS
471 const struct fw_img *img;
473 img = &(priv->fw->img[IWL_UCODE_WOWLAN]);
474 if (!priv->wowlan_sram) {
476 kzalloc(img->sec[IWL_UCODE_SECTION_DATA].len,
480 if (priv->wowlan_sram)
482 priv->trans, 0x800000,
484 img->sec[IWL_UCODE_SECTION_DATA].len / 4);
489 /* we'll clear ctx->vif during iwlagn_prepare_restart() */
492 priv->wowlan = false;
494 iwlagn_prepare_restart(priv);
496 memset((void *)&ctx->active, 0, sizeof(ctx->active));
497 iwl_connection_init_rx_config(priv, ctx);
498 iwlagn_set_rxon_chain(priv, ctx);
500 mutex_unlock(&priv->mutex);
501 IWL_DEBUG_MAC80211(priv, "leave\n");
503 ieee80211_resume_disconnect(vif);
508 static void iwlagn_mac_set_wakeup(struct ieee80211_hw *hw, bool enabled)
510 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
512 device_set_wakeup_enable(priv->trans->dev, enabled);
516 static void iwlagn_mac_tx(struct ieee80211_hw *hw,
517 struct ieee80211_tx_control *control,
520 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
522 if (iwlagn_tx_skb(priv, control->sta, skb))
523 ieee80211_free_txskb(hw, skb);
526 static void iwlagn_mac_update_tkip_key(struct ieee80211_hw *hw,
527 struct ieee80211_vif *vif,
528 struct ieee80211_key_conf *keyconf,
529 struct ieee80211_sta *sta,
530 u32 iv32, u16 *phase1key)
532 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
534 iwl_update_tkip_key(priv, vif, keyconf, sta, iv32, phase1key);
537 static int iwlagn_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
538 struct ieee80211_vif *vif,
539 struct ieee80211_sta *sta,
540 struct ieee80211_key_conf *key)
542 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
543 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
544 struct iwl_rxon_context *ctx = vif_priv->ctx;
546 bool is_default_wep_key = false;
548 IWL_DEBUG_MAC80211(priv, "enter\n");
550 if (iwlwifi_mod_params.sw_crypto) {
551 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
555 switch (key->cipher) {
556 case WLAN_CIPHER_SUITE_TKIP:
557 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
559 case WLAN_CIPHER_SUITE_CCMP:
560 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
567 * We could program these keys into the hardware as well, but we
568 * don't expect much multicast traffic in IBSS and having keys
569 * for more stations is probably more useful.
571 * Mark key TX-only and return 0.
573 if (vif->type == NL80211_IFTYPE_ADHOC &&
574 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
575 key->hw_key_idx = WEP_INVALID_OFFSET;
579 /* If they key was TX-only, accept deletion */
580 if (cmd == DISABLE_KEY && key->hw_key_idx == WEP_INVALID_OFFSET)
583 mutex_lock(&priv->mutex);
584 iwl_scan_cancel_timeout(priv, 100);
586 BUILD_BUG_ON(WEP_INVALID_OFFSET == IWLAGN_HW_KEY_DEFAULT);
589 * If we are getting WEP group key and we didn't receive any key mapping
590 * so far, we are in legacy wep mode (group key only), otherwise we are
592 * In legacy wep mode, we use another host command to the uCode.
594 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
595 key->cipher == WLAN_CIPHER_SUITE_WEP104) && !sta) {
597 is_default_wep_key = !ctx->key_mapping_keys;
600 key->hw_key_idx == IWLAGN_HW_KEY_DEFAULT;
606 if (is_default_wep_key) {
607 ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
610 ret = iwl_set_dynamic_key(priv, vif_priv->ctx, key, sta);
613 * can't add key for RX, but we don't need it
614 * in the device for TX so still return 0
617 key->hw_key_idx = WEP_INVALID_OFFSET;
620 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
623 if (is_default_wep_key)
624 ret = iwl_remove_default_wep_key(priv, ctx, key);
626 ret = iwl_remove_dynamic_key(priv, ctx, key, sta);
628 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
634 mutex_unlock(&priv->mutex);
635 IWL_DEBUG_MAC80211(priv, "leave\n");
640 static int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw,
641 struct ieee80211_vif *vif,
642 enum ieee80211_ampdu_mlme_action action,
643 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
646 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
648 struct iwl_station_priv *sta_priv = (void *) sta->drv_priv;
650 IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
653 if (!(priv->nvm_data->sku_cap_11n_enable))
656 IWL_DEBUG_MAC80211(priv, "enter\n");
657 mutex_lock(&priv->mutex);
660 case IEEE80211_AMPDU_RX_START:
661 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
663 IWL_DEBUG_HT(priv, "start Rx\n");
664 ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
666 case IEEE80211_AMPDU_RX_STOP:
667 IWL_DEBUG_HT(priv, "stop Rx\n");
668 ret = iwl_sta_rx_agg_stop(priv, sta, tid);
670 case IEEE80211_AMPDU_TX_START:
671 if (!priv->trans->ops->txq_enable)
673 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
675 IWL_DEBUG_HT(priv, "start Tx\n");
676 ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
678 case IEEE80211_AMPDU_TX_STOP_CONT:
679 case IEEE80211_AMPDU_TX_STOP_FLUSH:
680 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
681 IWL_DEBUG_HT(priv, "stop Tx\n");
682 ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
683 if ((ret == 0) && (priv->agg_tids_count > 0)) {
684 priv->agg_tids_count--;
685 IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
686 priv->agg_tids_count);
688 if (!priv->agg_tids_count &&
689 priv->hw_params.use_rts_for_aggregation) {
691 * switch off RTS/CTS if it was previously enabled
693 sta_priv->lq_sta.lq.general_params.flags &=
694 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
695 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
696 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
699 case IEEE80211_AMPDU_TX_OPERATIONAL:
700 ret = iwlagn_tx_agg_oper(priv, vif, sta, tid, buf_size);
703 mutex_unlock(&priv->mutex);
704 IWL_DEBUG_MAC80211(priv, "leave\n");
708 static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
709 struct ieee80211_vif *vif,
710 struct ieee80211_sta *sta)
712 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
713 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
714 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
715 bool is_ap = vif->type == NL80211_IFTYPE_STATION;
719 IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
721 sta_priv->sta_id = IWL_INVALID_STATION;
723 atomic_set(&sta_priv->pending_frames, 0);
724 if (vif->type == NL80211_IFTYPE_AP)
725 sta_priv->client = true;
727 ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
728 is_ap, sta, &sta_id);
730 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
732 /* Should we return success if return code is EEXIST ? */
736 sta_priv->sta_id = sta_id;
741 static int iwlagn_mac_sta_remove(struct ieee80211_hw *hw,
742 struct ieee80211_vif *vif,
743 struct ieee80211_sta *sta)
745 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
746 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
749 IWL_DEBUG_INFO(priv, "proceeding to remove station %pM\n", sta->addr);
751 if (vif->type == NL80211_IFTYPE_STATION) {
753 * Station will be removed from device when the RXON
754 * is set to unassociated -- just deactivate it here
755 * to avoid re-programming it.
758 iwl_deactivate_station(priv, sta_priv->sta_id, sta->addr);
760 ret = iwl_remove_station(priv, sta_priv->sta_id, sta->addr);
762 IWL_DEBUG_QUIET_RFKILL(priv,
763 "Error removing station %pM\n", sta->addr);
768 static int iwlagn_mac_sta_state(struct ieee80211_hw *hw,
769 struct ieee80211_vif *vif,
770 struct ieee80211_sta *sta,
771 enum ieee80211_sta_state old_state,
772 enum ieee80211_sta_state new_state)
774 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
775 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
777 NONE, ADD, REMOVE, HT_RATE_INIT, ADD_RATE_INIT,
781 IWL_DEBUG_MAC80211(priv, "station %pM state change %d->%d\n",
782 sta->addr, old_state, new_state);
784 mutex_lock(&priv->mutex);
785 if (vif->type == NL80211_IFTYPE_STATION) {
786 if (old_state == IEEE80211_STA_NOTEXIST &&
787 new_state == IEEE80211_STA_NONE)
789 else if (old_state == IEEE80211_STA_NONE &&
790 new_state == IEEE80211_STA_NOTEXIST)
792 else if (old_state == IEEE80211_STA_AUTH &&
793 new_state == IEEE80211_STA_ASSOC)
796 if (old_state == IEEE80211_STA_AUTH &&
797 new_state == IEEE80211_STA_ASSOC)
799 else if (old_state == IEEE80211_STA_ASSOC &&
800 new_state == IEEE80211_STA_AUTH)
806 ret = iwlagn_mac_sta_add(hw, vif, sta);
810 * Clear the in-progress flag, the AP station entry was added
811 * but we'll initialize LQ only when we've associated (which
812 * would also clear the in-progress flag). This is necessary
813 * in case we never initialize LQ because association fails.
815 spin_lock_bh(&priv->sta_lock);
816 priv->stations[iwl_sta_id(sta)].used &=
817 ~IWL_STA_UCODE_INPROGRESS;
818 spin_unlock_bh(&priv->sta_lock);
821 ret = iwlagn_mac_sta_remove(hw, vif, sta);
824 ret = iwlagn_mac_sta_add(hw, vif, sta);
827 /* Initialize rate scaling */
829 "Initializing rate scaling for station %pM\n",
831 iwl_rs_rate_init(priv, sta, iwl_sta_id(sta));
835 /* Initialize rate scaling */
836 ret = iwl_sta_update_ht(priv, vif_priv->ctx, sta);
840 "Initializing rate scaling for station %pM\n",
842 iwl_rs_rate_init(priv, sta, iwl_sta_id(sta));
851 * mac80211 might WARN if we fail, but due the way we
852 * (badly) handle hard rfkill, we might fail here
854 if (iwl_is_rfkill(priv))
857 mutex_unlock(&priv->mutex);
858 IWL_DEBUG_MAC80211(priv, "leave\n");
863 static void iwlagn_mac_channel_switch(struct ieee80211_hw *hw,
864 struct ieee80211_channel_switch *ch_switch)
866 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
867 struct ieee80211_conf *conf = &hw->conf;
868 struct ieee80211_channel *channel = ch_switch->channel;
869 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
872 * When we add support for multiple interfaces, we need to
873 * revisit this. The channel switch command in the device
874 * only affects the BSS context, but what does that really
875 * mean? And what if we get a CSA on the second interface?
876 * This needs a lot of work.
878 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
881 IWL_DEBUG_MAC80211(priv, "enter\n");
883 mutex_lock(&priv->mutex);
885 if (iwl_is_rfkill(priv))
888 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
889 test_bit(STATUS_SCANNING, &priv->status) ||
890 test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status))
893 if (!iwl_is_associated_ctx(ctx))
896 if (!priv->lib->set_channel_switch)
899 ch = channel->hw_value;
900 if (le16_to_cpu(ctx->active.channel) == ch)
903 priv->current_ht_config.smps = conf->smps_mode;
905 /* Configure HT40 channels */
906 ctx->ht.enabled = conf_is_ht(conf);
908 iwlagn_config_ht40(conf, ctx);
910 ctx->ht.is_40mhz = false;
912 if ((le16_to_cpu(ctx->staging.channel) != ch))
913 ctx->staging.flags = 0;
915 iwl_set_rxon_channel(priv, channel, ctx);
916 iwl_set_rxon_ht(priv, ht_conf);
917 iwl_set_flags_for_band(priv, ctx, channel->band, ctx->vif);
920 * at this point, staging_rxon has the
921 * configuration for channel switch
923 set_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
924 priv->switch_channel = cpu_to_le16(ch);
925 if (priv->lib->set_channel_switch(priv, ch_switch)) {
926 clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
927 priv->switch_channel = 0;
928 ieee80211_chswitch_done(ctx->vif, false);
932 mutex_unlock(&priv->mutex);
933 IWL_DEBUG_MAC80211(priv, "leave\n");
936 void iwl_chswitch_done(struct iwl_priv *priv, bool is_success)
940 * See iwlagn_mac_channel_switch.
942 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
944 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
947 if (test_and_clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status))
948 ieee80211_chswitch_done(ctx->vif, is_success);
951 static void iwlagn_configure_filter(struct ieee80211_hw *hw,
952 unsigned int changed_flags,
953 unsigned int *total_flags,
956 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
957 __le32 filter_or = 0, filter_nand = 0;
958 struct iwl_rxon_context *ctx;
960 #define CHK(test, flag) do { \
961 if (*total_flags & (test)) \
962 filter_or |= (flag); \
964 filter_nand |= (flag); \
967 IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
968 changed_flags, *total_flags);
970 CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
971 /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
972 CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK);
973 CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
977 mutex_lock(&priv->mutex);
979 for_each_context(priv, ctx) {
980 ctx->staging.filter_flags &= ~filter_nand;
981 ctx->staging.filter_flags |= filter_or;
984 * Not committing directly because hardware can perform a scan,
985 * but we'll eventually commit the filter flags change anyway.
989 mutex_unlock(&priv->mutex);
992 * Receiving all multicast frames is always enabled by the
993 * default flags setup in iwl_connection_init_rx_config()
994 * since we currently do not support programming multicast
995 * filters into the device.
997 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
998 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
1001 static void iwlagn_mac_flush(struct ieee80211_hw *hw, bool drop)
1003 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1005 mutex_lock(&priv->mutex);
1006 IWL_DEBUG_MAC80211(priv, "enter\n");
1008 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1009 IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
1012 if (iwl_is_rfkill(priv)) {
1013 IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
1018 * mac80211 will not push any more frames for transmit
1019 * until the flush is completed
1022 IWL_DEBUG_MAC80211(priv, "send flush command\n");
1023 if (iwlagn_txfifo_flush(priv)) {
1024 IWL_ERR(priv, "flush request fail\n");
1028 IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
1029 iwl_trans_wait_tx_queue_empty(priv->trans);
1031 mutex_unlock(&priv->mutex);
1032 IWL_DEBUG_MAC80211(priv, "leave\n");
1035 static int iwlagn_mac_remain_on_channel(struct ieee80211_hw *hw,
1036 struct ieee80211_vif *vif,
1037 struct ieee80211_channel *channel,
1040 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1041 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
1044 if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
1047 if (!(ctx->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)))
1050 IWL_DEBUG_MAC80211(priv, "enter\n");
1051 mutex_lock(&priv->mutex);
1053 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
1054 /* mac80211 should not scan while ROC or ROC while scanning */
1055 if (WARN_ON_ONCE(priv->scan_type != IWL_SCAN_RADIO_RESET)) {
1060 iwl_scan_cancel_timeout(priv, 100);
1062 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
1068 priv->hw_roc_channel = channel;
1069 /* convert from ms to TU */
1070 priv->hw_roc_duration = DIV_ROUND_UP(1000 * duration, 1024);
1071 priv->hw_roc_start_notified = false;
1072 cancel_delayed_work(&priv->hw_roc_disable_work);
1074 if (!ctx->is_active) {
1075 static const struct iwl_qos_info default_qos_data = {
1078 .cw_min = cpu_to_le16(3),
1079 .cw_max = cpu_to_le16(7),
1081 .edca_txop = cpu_to_le16(1504),
1084 .cw_min = cpu_to_le16(7),
1085 .cw_max = cpu_to_le16(15),
1087 .edca_txop = cpu_to_le16(3008),
1090 .cw_min = cpu_to_le16(15),
1091 .cw_max = cpu_to_le16(1023),
1095 .cw_min = cpu_to_le16(15),
1096 .cw_max = cpu_to_le16(1023),
1102 ctx->is_active = true;
1103 ctx->qos_data = default_qos_data;
1104 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
1105 memcpy(ctx->staging.node_addr,
1106 priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
1108 memcpy(ctx->staging.bssid_addr,
1109 priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
1111 err = iwlagn_commit_rxon(priv, ctx);
1114 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK |
1115 RXON_FILTER_PROMISC_MSK |
1116 RXON_FILTER_CTL2HOST_MSK;
1118 err = iwlagn_commit_rxon(priv, ctx);
1120 iwlagn_disable_roc(priv);
1123 priv->hw_roc_setup = true;
1126 err = iwl_scan_initiate(priv, ctx->vif, IWL_SCAN_ROC, channel->band);
1128 iwlagn_disable_roc(priv);
1131 mutex_unlock(&priv->mutex);
1132 IWL_DEBUG_MAC80211(priv, "leave\n");
1137 static int iwlagn_mac_cancel_remain_on_channel(struct ieee80211_hw *hw)
1139 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1141 if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
1144 IWL_DEBUG_MAC80211(priv, "enter\n");
1145 mutex_lock(&priv->mutex);
1146 iwl_scan_cancel_timeout(priv, priv->hw_roc_duration);
1147 iwlagn_disable_roc(priv);
1148 mutex_unlock(&priv->mutex);
1149 IWL_DEBUG_MAC80211(priv, "leave\n");
1154 static void iwlagn_mac_rssi_callback(struct ieee80211_hw *hw,
1155 struct ieee80211_vif *vif,
1156 enum ieee80211_rssi_event rssi_event)
1158 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1160 IWL_DEBUG_MAC80211(priv, "enter\n");
1161 mutex_lock(&priv->mutex);
1163 if (priv->cfg->bt_params &&
1164 priv->cfg->bt_params->advanced_bt_coexist) {
1165 if (rssi_event == RSSI_EVENT_LOW)
1166 priv->bt_enable_pspoll = true;
1167 else if (rssi_event == RSSI_EVENT_HIGH)
1168 priv->bt_enable_pspoll = false;
1170 iwlagn_send_advance_bt_config(priv);
1172 IWL_DEBUG_MAC80211(priv, "Advanced BT coex disabled,"
1173 "ignoring RSSI callback\n");
1176 mutex_unlock(&priv->mutex);
1177 IWL_DEBUG_MAC80211(priv, "leave\n");
1180 static int iwlagn_mac_set_tim(struct ieee80211_hw *hw,
1181 struct ieee80211_sta *sta, bool set)
1183 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1185 queue_work(priv->workqueue, &priv->beacon_update);
1190 static int iwlagn_mac_conf_tx(struct ieee80211_hw *hw,
1191 struct ieee80211_vif *vif, u16 queue,
1192 const struct ieee80211_tx_queue_params *params)
1194 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1195 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
1196 struct iwl_rxon_context *ctx = vif_priv->ctx;
1202 IWL_DEBUG_MAC80211(priv, "enter\n");
1204 if (!iwl_is_ready_rf(priv)) {
1205 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
1209 if (queue >= AC_NUM) {
1210 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
1214 q = AC_NUM - 1 - queue;
1216 mutex_lock(&priv->mutex);
1218 ctx->qos_data.def_qos_parm.ac[q].cw_min =
1219 cpu_to_le16(params->cw_min);
1220 ctx->qos_data.def_qos_parm.ac[q].cw_max =
1221 cpu_to_le16(params->cw_max);
1222 ctx->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
1223 ctx->qos_data.def_qos_parm.ac[q].edca_txop =
1224 cpu_to_le16((params->txop * 32));
1226 ctx->qos_data.def_qos_parm.ac[q].reserved1 = 0;
1228 mutex_unlock(&priv->mutex);
1230 IWL_DEBUG_MAC80211(priv, "leave\n");
1234 static int iwlagn_mac_tx_last_beacon(struct ieee80211_hw *hw)
1236 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1238 return priv->ibss_manager == IWL_IBSS_MANAGER;
1241 static int iwl_set_mode(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
1243 iwl_connection_init_rx_config(priv, ctx);
1245 iwlagn_set_rxon_chain(priv, ctx);
1247 return iwlagn_commit_rxon(priv, ctx);
1250 static int iwl_setup_interface(struct iwl_priv *priv,
1251 struct iwl_rxon_context *ctx)
1253 struct ieee80211_vif *vif = ctx->vif;
1256 lockdep_assert_held(&priv->mutex);
1259 * This variable will be correct only when there's just
1260 * a single context, but all code using it is for hardware
1261 * that supports only one context.
1263 priv->iw_mode = vif->type;
1265 ctx->is_active = true;
1267 err = iwl_set_mode(priv, ctx);
1269 if (!ctx->always_active)
1270 ctx->is_active = false;
1274 if (priv->cfg->bt_params && priv->cfg->bt_params->advanced_bt_coexist &&
1275 vif->type == NL80211_IFTYPE_ADHOC) {
1277 * pretend to have high BT traffic as long as we
1278 * are operating in IBSS mode, as this will cause
1279 * the rate scaling etc. to behave as intended.
1281 priv->bt_traffic_load = IWL_BT_COEX_TRAFFIC_LOAD_HIGH;
1284 /* set up queue mappings */
1285 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
1286 vif->hw_queue[ac] = ctx->ac_to_queue[ac];
1288 if (vif->type == NL80211_IFTYPE_AP)
1289 vif->cab_queue = ctx->mcast_queue;
1291 vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
1296 static int iwlagn_mac_add_interface(struct ieee80211_hw *hw,
1297 struct ieee80211_vif *vif)
1299 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1300 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
1301 struct iwl_rxon_context *tmp, *ctx = NULL;
1303 enum nl80211_iftype viftype = ieee80211_vif_type_p2p(vif);
1306 IWL_DEBUG_MAC80211(priv, "enter: type %d, addr %pM\n",
1307 viftype, vif->addr);
1309 cancel_delayed_work_sync(&priv->hw_roc_disable_work);
1311 mutex_lock(&priv->mutex);
1313 iwlagn_disable_roc(priv);
1315 if (!iwl_is_ready_rf(priv)) {
1316 IWL_WARN(priv, "Try to add interface when device not ready\n");
1321 for_each_context(priv, tmp) {
1322 u32 possible_modes =
1323 tmp->interface_modes | tmp->exclusive_interface_modes;
1326 /* On reset we need to add the same interface again */
1327 if (tmp->vif == vif) {
1333 /* check if this busy context is exclusive */
1334 if (tmp->exclusive_interface_modes &
1335 BIT(tmp->vif->type)) {
1342 if (!(possible_modes & BIT(viftype)))
1345 /* have maybe usable context w/o interface */
1355 vif_priv->ctx = ctx;
1359 * In SNIFFER device type, the firmware reports the FCS to
1360 * the host, rather than snipping it off. Unfortunately,
1361 * mac80211 doesn't (yet) provide a per-packet flag for
1362 * this, so that we have to set the hardware flag based
1363 * on the interfaces added. As the monitor interface can
1364 * only be present by itself, and will be removed before
1365 * other interfaces are added, this is safe.
1367 if (vif->type == NL80211_IFTYPE_MONITOR)
1368 priv->hw->flags |= IEEE80211_HW_RX_INCLUDES_FCS;
1370 priv->hw->flags &= ~IEEE80211_HW_RX_INCLUDES_FCS;
1372 err = iwl_setup_interface(priv, ctx);
1377 priv->iw_mode = NL80211_IFTYPE_STATION;
1379 mutex_unlock(&priv->mutex);
1381 IWL_DEBUG_MAC80211(priv, "leave\n");
1385 static void iwl_teardown_interface(struct iwl_priv *priv,
1386 struct ieee80211_vif *vif,
1389 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1391 lockdep_assert_held(&priv->mutex);
1393 if (priv->scan_vif == vif) {
1394 iwl_scan_cancel_timeout(priv, 200);
1395 iwl_force_scan_end(priv);
1399 iwl_set_mode(priv, ctx);
1400 if (!ctx->always_active)
1401 ctx->is_active = false;
1405 * When removing the IBSS interface, overwrite the
1406 * BT traffic load with the stored one from the last
1407 * notification, if any. If this is a device that
1408 * doesn't implement this, this has no effect since
1409 * both values are the same and zero.
1411 if (vif->type == NL80211_IFTYPE_ADHOC)
1412 priv->bt_traffic_load = priv->last_bt_traffic_load;
1415 static void iwlagn_mac_remove_interface(struct ieee80211_hw *hw,
1416 struct ieee80211_vif *vif)
1418 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1419 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1421 IWL_DEBUG_MAC80211(priv, "enter\n");
1423 mutex_lock(&priv->mutex);
1425 if (WARN_ON(ctx->vif != vif)) {
1426 struct iwl_rxon_context *tmp;
1427 IWL_ERR(priv, "ctx->vif = %p, vif = %p\n", ctx->vif, vif);
1428 for_each_context(priv, tmp)
1429 IWL_ERR(priv, "\tID = %d:\tctx = %p\tctx->vif = %p\n",
1430 tmp->ctxid, tmp, tmp->vif);
1434 iwl_teardown_interface(priv, vif, false);
1436 mutex_unlock(&priv->mutex);
1438 IWL_DEBUG_MAC80211(priv, "leave\n");
1442 static int iwlagn_mac_change_interface(struct ieee80211_hw *hw,
1443 struct ieee80211_vif *vif,
1444 enum nl80211_iftype newtype, bool newp2p)
1446 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1447 struct iwl_rxon_context *ctx, *tmp;
1448 enum nl80211_iftype newviftype = newtype;
1449 u32 interface_modes;
1452 IWL_DEBUG_MAC80211(priv, "enter\n");
1454 newtype = ieee80211_iftype_p2p(newtype, newp2p);
1456 mutex_lock(&priv->mutex);
1458 ctx = iwl_rxon_ctx_from_vif(vif);
1461 * To simplify this code, only support changes on the
1462 * BSS context. The PAN context is usually reassigned
1463 * by creating/removing P2P interfaces anyway.
1465 if (ctx->ctxid != IWL_RXON_CTX_BSS) {
1470 if (!ctx->vif || !iwl_is_ready_rf(priv)) {
1472 * Huh? But wait ... this can maybe happen when
1473 * we're in the middle of a firmware restart!
1479 /* Check if the switch is supported in the same context */
1480 interface_modes = ctx->interface_modes | ctx->exclusive_interface_modes;
1481 if (!(interface_modes & BIT(newtype))) {
1486 if (ctx->exclusive_interface_modes & BIT(newtype)) {
1487 for_each_context(priv, tmp) {
1491 if (!tmp->is_active)
1495 * The current mode switch would be exclusive, but
1496 * another context is active ... refuse the switch.
1504 iwl_teardown_interface(priv, vif, true);
1505 vif->type = newviftype;
1507 err = iwl_setup_interface(priv, ctx);
1510 * We've switched internally, but submitting to the
1511 * device may have failed for some reason. Mask this
1512 * error, because otherwise mac80211 will not switch
1513 * (and set the interface type back) and we'll be
1514 * out of sync with it.
1519 mutex_unlock(&priv->mutex);
1520 IWL_DEBUG_MAC80211(priv, "leave\n");
1525 static int iwlagn_mac_hw_scan(struct ieee80211_hw *hw,
1526 struct ieee80211_vif *vif,
1527 struct cfg80211_scan_request *req)
1529 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1532 IWL_DEBUG_MAC80211(priv, "enter\n");
1534 if (req->n_channels == 0)
1537 mutex_lock(&priv->mutex);
1540 * If an internal scan is in progress, just set
1541 * up the scan_request as per above.
1543 if (priv->scan_type != IWL_SCAN_NORMAL) {
1544 IWL_DEBUG_SCAN(priv,
1545 "SCAN request during internal scan - defer\n");
1546 priv->scan_request = req;
1547 priv->scan_vif = vif;
1550 priv->scan_request = req;
1551 priv->scan_vif = vif;
1553 * mac80211 will only ask for one band at a time
1554 * so using channels[0] here is ok
1556 ret = iwl_scan_initiate(priv, vif, IWL_SCAN_NORMAL,
1557 req->channels[0]->band);
1559 priv->scan_request = NULL;
1560 priv->scan_vif = NULL;
1564 IWL_DEBUG_MAC80211(priv, "leave\n");
1566 mutex_unlock(&priv->mutex);
1571 static void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id)
1573 struct iwl_addsta_cmd cmd = {
1574 .mode = STA_CONTROL_MODIFY_MSK,
1575 .station_flags_msk = STA_FLG_PWR_SAVE_MSK,
1576 .sta.sta_id = sta_id,
1579 iwl_send_add_sta(priv, &cmd, CMD_ASYNC);
1582 static void iwlagn_mac_sta_notify(struct ieee80211_hw *hw,
1583 struct ieee80211_vif *vif,
1584 enum sta_notify_cmd cmd,
1585 struct ieee80211_sta *sta)
1587 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1588 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
1591 IWL_DEBUG_MAC80211(priv, "enter\n");
1594 case STA_NOTIFY_SLEEP:
1595 WARN_ON(!sta_priv->client);
1596 sta_priv->asleep = true;
1597 if (atomic_read(&sta_priv->pending_frames) > 0)
1598 ieee80211_sta_block_awake(hw, sta, true);
1600 case STA_NOTIFY_AWAKE:
1601 WARN_ON(!sta_priv->client);
1602 if (!sta_priv->asleep)
1604 sta_priv->asleep = false;
1605 sta_id = iwl_sta_id(sta);
1606 if (sta_id != IWL_INVALID_STATION)
1607 iwl_sta_modify_ps_wake(priv, sta_id);
1612 IWL_DEBUG_MAC80211(priv, "leave\n");
1615 struct ieee80211_ops iwlagn_hw_ops = {
1616 .tx = iwlagn_mac_tx,
1617 .start = iwlagn_mac_start,
1618 .stop = iwlagn_mac_stop,
1619 #ifdef CONFIG_PM_SLEEP
1620 .suspend = iwlagn_mac_suspend,
1621 .resume = iwlagn_mac_resume,
1622 .set_wakeup = iwlagn_mac_set_wakeup,
1624 .add_interface = iwlagn_mac_add_interface,
1625 .remove_interface = iwlagn_mac_remove_interface,
1626 .change_interface = iwlagn_mac_change_interface,
1627 .config = iwlagn_mac_config,
1628 .configure_filter = iwlagn_configure_filter,
1629 .set_key = iwlagn_mac_set_key,
1630 .update_tkip_key = iwlagn_mac_update_tkip_key,
1631 .set_rekey_data = iwlagn_mac_set_rekey_data,
1632 .conf_tx = iwlagn_mac_conf_tx,
1633 .bss_info_changed = iwlagn_bss_info_changed,
1634 .ampdu_action = iwlagn_mac_ampdu_action,
1635 .hw_scan = iwlagn_mac_hw_scan,
1636 .sta_notify = iwlagn_mac_sta_notify,
1637 .sta_state = iwlagn_mac_sta_state,
1638 .channel_switch = iwlagn_mac_channel_switch,
1639 .flush = iwlagn_mac_flush,
1640 .tx_last_beacon = iwlagn_mac_tx_last_beacon,
1641 .remain_on_channel = iwlagn_mac_remain_on_channel,
1642 .cancel_remain_on_channel = iwlagn_mac_cancel_remain_on_channel,
1643 .rssi_callback = iwlagn_mac_rssi_callback,
1644 CFG80211_TESTMODE_CMD(iwlagn_mac_testmode_cmd)
1645 CFG80211_TESTMODE_DUMP(iwlagn_mac_testmode_dump)
1646 .set_tim = iwlagn_mac_set_tim,
1649 /* This function both allocates and initializes hw and priv. */
1650 struct ieee80211_hw *iwl_alloc_all(void)
1652 struct iwl_priv *priv;
1653 struct iwl_op_mode *op_mode;
1654 /* mac80211 allocates memory for this device instance, including
1655 * space for this driver's private structure */
1656 struct ieee80211_hw *hw;
1658 hw = ieee80211_alloc_hw(sizeof(struct iwl_priv) +
1659 sizeof(struct iwl_op_mode), &iwlagn_hw_ops);
1664 priv = IWL_OP_MODE_GET_DVM(op_mode);