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iwlwifi: mvm: remove P2P_DEVICE support
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / mvm / mac80211.c
1 /******************************************************************************
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
8 * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of version 2 of the GNU General Public License as
12 * published by the Free Software Foundation.
13 *
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
22 * USA
23 *
24 * The full GNU General Public License is included in this distribution
25 * in the file called COPYING.
26 *
27 * Contact Information:
28 * Intel Linux Wireless <ilw@linux.intel.com>
29 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
30 *
31 * BSD LICENSE
32 *
33 * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
34 * All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 *
40 * * Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * * Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in
44 * the documentation and/or other materials provided with the
45 * distribution.
46 * * Neither the name Intel Corporation nor the names of its
47 * contributors may be used to endorse or promote products derived
48 * from this software without specific prior written permission.
49 *
50 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
51 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
52 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
53 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
54 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
55 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
56 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
57 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
58 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
59 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
60 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
61 *
62 *****************************************************************************/
63 #include <linux/kernel.h>
64 #include <linux/slab.h>
65 #include <linux/skbuff.h>
66 #include <linux/netdevice.h>
67 #include <linux/etherdevice.h>
68 #include <linux/ip.h>
69 #include <net/mac80211.h>
70 #include <net/tcp.h>
71
72 #include "iwl-op-mode.h"
73 #include "iwl-io.h"
74 #include "mvm.h"
75 #include "sta.h"
76 #include "time-event.h"
77 #include "iwl-eeprom-parse.h"
78 #include "fw-api-scan.h"
79 #include "iwl-phy-db.h"
80
81 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
82 {
83 .max = 1,
84 .types = BIT(NL80211_IFTYPE_STATION) |
85 BIT(NL80211_IFTYPE_AP),
86 },
87 };
88
89 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
90 {
91 .num_different_channels = 1,
92 .max_interfaces = 3,
93 .limits = iwl_mvm_limits,
94 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
95 },
96 };
97
98 #ifdef CONFIG_PM_SLEEP
99 static const struct nl80211_wowlan_tcp_data_token_feature
100 iwl_mvm_wowlan_tcp_token_feature = {
101 .min_len = 0,
102 .max_len = 255,
103 .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
104 };
105
106 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
107 .tok = &iwl_mvm_wowlan_tcp_token_feature,
108 .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
109 sizeof(struct ethhdr) -
110 sizeof(struct iphdr) -
111 sizeof(struct tcphdr),
112 .data_interval_max = 65535, /* __le16 in API */
113 .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
114 sizeof(struct ethhdr) -
115 sizeof(struct iphdr) -
116 sizeof(struct tcphdr),
117 .seq = true,
118 };
119 #endif
120
121 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
122 {
123 struct ieee80211_hw *hw = mvm->hw;
124 int num_mac, ret, i;
125
126 /* Tell mac80211 our characteristics */
127 hw->flags = IEEE80211_HW_SIGNAL_DBM |
128 IEEE80211_HW_SPECTRUM_MGMT |
129 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
130 IEEE80211_HW_QUEUE_CONTROL |
131 IEEE80211_HW_WANT_MONITOR_VIF |
132 IEEE80211_HW_SUPPORTS_PS |
133 IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
134 IEEE80211_HW_AMPDU_AGGREGATION |
135 IEEE80211_HW_TIMING_BEACON_ONLY;
136
137 hw->queues = IWL_MVM_FIRST_AGG_QUEUE;
138 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
139 hw->rate_control_algorithm = "iwl-mvm-rs";
140
141 /*
142 * Enable 11w if advertised by firmware and software crypto
143 * is not enabled (as the firmware will interpret some mgmt
144 * packets, so enabling it with software crypto isn't safe)
145 */
146 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
147 !iwlwifi_mod_params.sw_crypto)
148 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
149
150 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
151 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
152 hw->chanctx_data_size = sizeof(struct iwl_mvm_phy_ctxt);
153
154 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
155 BIT(NL80211_IFTYPE_AP);
156
157 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
158 WIPHY_FLAG_DISABLE_BEACON_HINTS |
159 WIPHY_FLAG_IBSS_RSN;
160
161 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
162 hw->wiphy->n_iface_combinations =
163 ARRAY_SIZE(iwl_mvm_iface_combinations);
164
165 hw->wiphy->max_remain_on_channel_duration = 10000;
166 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
167
168 /* Extract MAC address */
169 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
170 hw->wiphy->addresses = mvm->addresses;
171 hw->wiphy->n_addresses = 1;
172
173 /* Extract additional MAC addresses if available */
174 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
175 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
176
177 for (i = 1; i < num_mac; i++) {
178 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
179 ETH_ALEN);
180 mvm->addresses[i].addr[5]++;
181 hw->wiphy->n_addresses++;
182 }
183
184 /* we create the 802.11 header and a max-length SSID element */
185 hw->wiphy->max_scan_ie_len =
186 mvm->fw->ucode_capa.max_probe_length - 24 - 34;
187 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
188
189 if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
190 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
191 &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
192 if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
193 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
194 &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
195
196 hw->wiphy->hw_version = mvm->trans->hw_id;
197
198 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
199 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
200 else
201 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
202
203 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
204 NL80211_FEATURE_P2P_GO_OPPPS;
205
206 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
207
208 #ifdef CONFIG_PM_SLEEP
209 if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
210 mvm->trans->ops->d3_suspend &&
211 mvm->trans->ops->d3_resume &&
212 device_can_wakeup(mvm->trans->dev)) {
213 hw->wiphy->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
214 WIPHY_WOWLAN_DISCONNECT |
215 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
216 WIPHY_WOWLAN_RFKILL_RELEASE;
217 if (!iwlwifi_mod_params.sw_crypto)
218 hw->wiphy->wowlan.flags |=
219 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
220 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
221 WIPHY_WOWLAN_4WAY_HANDSHAKE;
222
223 hw->wiphy->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
224 hw->wiphy->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
225 hw->wiphy->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
226 hw->wiphy->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
227 }
228 #endif
229
230 ret = iwl_mvm_leds_init(mvm);
231 if (ret)
232 return ret;
233
234 return ieee80211_register_hw(mvm->hw);
235 }
236
237 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
238 struct ieee80211_tx_control *control,
239 struct sk_buff *skb)
240 {
241 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
242
243 if (test_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status)) {
244 IWL_DEBUG_DROP(mvm, "Dropping - RF KILL\n");
245 goto drop;
246 }
247
248 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
249 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status))
250 goto drop;
251
252 if (control->sta) {
253 if (iwl_mvm_tx_skb(mvm, skb, control->sta))
254 goto drop;
255 return;
256 }
257
258 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
259 goto drop;
260 return;
261 drop:
262 ieee80211_free_txskb(hw, skb);
263 }
264
265 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
266 struct ieee80211_vif *vif,
267 enum ieee80211_ampdu_mlme_action action,
268 struct ieee80211_sta *sta, u16 tid,
269 u16 *ssn, u8 buf_size)
270 {
271 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
272 int ret;
273
274 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
275 sta->addr, tid, action);
276
277 if (!(mvm->nvm_data->sku_cap_11n_enable))
278 return -EACCES;
279
280 mutex_lock(&mvm->mutex);
281
282 switch (action) {
283 case IEEE80211_AMPDU_RX_START:
284 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG) {
285 ret = -EINVAL;
286 break;
287 }
288 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
289 break;
290 case IEEE80211_AMPDU_RX_STOP:
291 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
292 break;
293 case IEEE80211_AMPDU_TX_START:
294 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG) {
295 ret = -EINVAL;
296 break;
297 }
298 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
299 break;
300 case IEEE80211_AMPDU_TX_STOP_CONT:
301 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
302 break;
303 case IEEE80211_AMPDU_TX_STOP_FLUSH:
304 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
305 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
306 break;
307 case IEEE80211_AMPDU_TX_OPERATIONAL:
308 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
309 break;
310 default:
311 WARN_ON_ONCE(1);
312 ret = -EINVAL;
313 break;
314 }
315 mutex_unlock(&mvm->mutex);
316
317 return ret;
318 }
319
320 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
321 struct ieee80211_vif *vif)
322 {
323 struct iwl_mvm *mvm = data;
324 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
325
326 mvmvif->uploaded = false;
327 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
328
329 /* does this make sense at all? */
330 mvmvif->color++;
331
332 spin_lock_bh(&mvm->time_event_lock);
333 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
334 spin_unlock_bh(&mvm->time_event_lock);
335
336 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
337 mvmvif->phy_ctxt = NULL;
338 }
339
340 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
341 {
342 iwl_trans_stop_device(mvm->trans);
343 iwl_trans_stop_hw(mvm->trans, false);
344
345 mvm->scan_status = IWL_MVM_SCAN_NONE;
346
347 /* just in case one was running */
348 ieee80211_remain_on_channel_expired(mvm->hw);
349
350 ieee80211_iterate_active_interfaces_atomic(
351 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
352 iwl_mvm_cleanup_iterator, mvm);
353
354 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
355 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
356
357 ieee80211_wake_queues(mvm->hw);
358
359 mvm->vif_count = 0;
360 }
361
362 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
363 {
364 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
365 int ret;
366
367 mutex_lock(&mvm->mutex);
368
369 /* Clean up some internal and mac80211 state on restart */
370 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
371 iwl_mvm_restart_cleanup(mvm);
372
373 ret = iwl_mvm_up(mvm);
374 mutex_unlock(&mvm->mutex);
375
376 return ret;
377 }
378
379 static void iwl_mvm_mac_restart_complete(struct ieee80211_hw *hw)
380 {
381 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
382 int ret;
383
384 mutex_lock(&mvm->mutex);
385
386 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
387 ret = iwl_mvm_update_quotas(mvm, NULL);
388 if (ret)
389 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
390 ret);
391
392 mutex_unlock(&mvm->mutex);
393 }
394
395 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
396 {
397 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
398
399 flush_work(&mvm->async_handlers_wk);
400
401 mutex_lock(&mvm->mutex);
402 /* async_handlers_wk is now blocked */
403
404 /*
405 * The work item could be running or queued if the
406 * ROC time event stops just as we get here.
407 */
408 cancel_work_sync(&mvm->roc_done_wk);
409
410 iwl_trans_stop_device(mvm->trans);
411 iwl_trans_stop_hw(mvm->trans, false);
412
413 iwl_mvm_async_handlers_purge(mvm);
414 /* async_handlers_list is empty and will stay empty: HW is stopped */
415
416 /* the fw is stopped, the aux sta is dead: clean up driver state */
417 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
418
419 mutex_unlock(&mvm->mutex);
420
421 /*
422 * The worker might have been waiting for the mutex, let it run and
423 * discover that its list is now empty.
424 */
425 cancel_work_sync(&mvm->async_handlers_wk);
426 }
427
428 static void iwl_mvm_pm_disable_iterator(void *data, u8 *mac,
429 struct ieee80211_vif *vif)
430 {
431 struct iwl_mvm *mvm = data;
432 int ret;
433
434 ret = iwl_mvm_power_disable(mvm, vif);
435 if (ret)
436 IWL_ERR(mvm, "failed to disable power management\n");
437 }
438
439 static void iwl_mvm_power_update_iterator(void *data, u8 *mac,
440 struct ieee80211_vif *vif)
441 {
442 struct iwl_mvm *mvm = data;
443
444 iwl_mvm_power_update_mode(mvm, vif);
445 }
446
447 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
448 struct ieee80211_vif *vif)
449 {
450 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
451 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
452 int ret;
453
454 /*
455 * Not much to do here. The stack will not allow interface
456 * types or combinations that we didn't advertise, so we
457 * don't really have to check the types.
458 */
459
460 mutex_lock(&mvm->mutex);
461
462 /* Allocate resources for the MAC context, and add it the the fw */
463 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
464 if (ret)
465 goto out_unlock;
466
467 /*
468 * The AP binding flow can be done only after the beacon
469 * template is configured (which happens only in the mac80211
470 * start_ap() flow), and adding the broadcast station can happen
471 * only after the binding.
472 * In addition, since modifying the MAC before adding a bcast
473 * station is not allowed by the FW, delay the adding of MAC context to
474 * the point where we can also add the bcast station.
475 * In short: there's not much we can do at this point, other than
476 * allocating resources :)
477 */
478 if (vif->type == NL80211_IFTYPE_AP) {
479 u32 qmask = iwl_mvm_mac_get_queues_mask(mvm, vif);
480 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta,
481 qmask);
482 if (ret) {
483 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
484 goto out_release;
485 }
486
487 goto out_unlock;
488 }
489
490 /*
491 * TODO: remove this temporary code.
492 * Currently MVM FW supports power management only on single MAC.
493 * If new interface added, disable PM on existing interface.
494 * P2P device is a special case, since it is handled by FW similary to
495 * scan. If P2P deviced is added, PM remains enabled on existing
496 * interface.
497 * Note: the method below does not count the new interface being added
498 * at this moment.
499 */
500 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
501 mvm->vif_count++;
502 if (mvm->vif_count > 1) {
503 IWL_DEBUG_MAC80211(mvm,
504 "Disable power on existing interfaces\n");
505 ieee80211_iterate_active_interfaces_atomic(
506 mvm->hw,
507 IEEE80211_IFACE_ITER_NORMAL,
508 iwl_mvm_pm_disable_iterator, mvm);
509 }
510
511 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
512 if (ret)
513 goto out_release;
514
515 /*
516 * Update power state on the new interface. Admittedly, based on
517 * mac80211 logics this power update will disable power management
518 */
519 iwl_mvm_power_update_mode(mvm, vif);
520
521 /*
522 * P2P_DEVICE interface does not have a channel context assigned to it,
523 * so a dedicated PHY context is allocated to it and the corresponding
524 * MAC context is bound to it at this stage.
525 */
526 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
527 struct ieee80211_channel *chan;
528 struct cfg80211_chan_def chandef;
529
530 mvmvif->phy_ctxt = &mvm->phy_ctxt_roc;
531
532 /*
533 * The channel used here isn't relevant as it's
534 * going to be overwritten as part of the ROC flow.
535 * For now use the first channel we have.
536 */
537 chan = &mvm->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels[0];
538 cfg80211_chandef_create(&chandef, chan, NL80211_CHAN_NO_HT);
539 ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt,
540 &chandef, 1, 1);
541 if (ret)
542 goto out_remove_mac;
543
544 ret = iwl_mvm_binding_add_vif(mvm, vif);
545 if (ret)
546 goto out_remove_phy;
547
548 ret = iwl_mvm_add_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
549 if (ret)
550 goto out_unbind;
551
552 /* Save a pointer to p2p device vif, so it can later be used to
553 * update the p2p device MAC when a GO is started/stopped */
554 mvm->p2p_device_vif = vif;
555 }
556
557 iwl_mvm_vif_dbgfs_register(mvm, vif);
558 goto out_unlock;
559
560 out_unbind:
561 iwl_mvm_binding_remove_vif(mvm, vif);
562 out_remove_phy:
563 iwl_mvm_phy_ctxt_remove(mvm, mvmvif->phy_ctxt);
564 out_remove_mac:
565 mvmvif->phy_ctxt = NULL;
566 iwl_mvm_mac_ctxt_remove(mvm, vif);
567 out_release:
568 /*
569 * TODO: remove this temporary code.
570 * Currently MVM FW supports power management only on single MAC.
571 * Check if only one additional interface remains after releasing
572 * current one. Update power mode on the remaining interface.
573 */
574 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
575 mvm->vif_count--;
576 IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n",
577 mvm->vif_count);
578 if (mvm->vif_count == 1) {
579 ieee80211_iterate_active_interfaces(
580 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
581 iwl_mvm_power_update_iterator, mvm);
582 }
583 iwl_mvm_mac_ctxt_release(mvm, vif);
584 out_unlock:
585 mutex_unlock(&mvm->mutex);
586
587 return ret;
588 }
589
590 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
591 struct ieee80211_vif *vif)
592 {
593 u32 tfd_msk = 0, ac;
594
595 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
596 if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
597 tfd_msk |= BIT(vif->hw_queue[ac]);
598
599 if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE)
600 tfd_msk |= BIT(vif->cab_queue);
601
602 if (tfd_msk) {
603 mutex_lock(&mvm->mutex);
604 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
605 mutex_unlock(&mvm->mutex);
606 }
607
608 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
609 /*
610 * Flush the ROC worker which will flush the OFFCHANNEL queue.
611 * We assume here that all the packets sent to the OFFCHANNEL
612 * queue are sent in ROC session.
613 */
614 flush_work(&mvm->roc_done_wk);
615 } else {
616 /*
617 * By now, all the AC queues are empty. The AGG queues are
618 * empty too. We already got all the Tx responses for all the
619 * packets in the queues. The drain work can have been
620 * triggered. Flush it. This work item takes the mutex, so kill
621 * it before we take it.
622 */
623 flush_work(&mvm->sta_drained_wk);
624 }
625 }
626
627 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
628 struct ieee80211_vif *vif)
629 {
630 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
631 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
632
633 iwl_mvm_prepare_mac_removal(mvm, vif);
634
635 mutex_lock(&mvm->mutex);
636
637 iwl_mvm_vif_dbgfs_clean(mvm, vif);
638
639 /*
640 * For AP/GO interface, the tear down of the resources allocated to the
641 * interface is be handled as part of the stop_ap flow.
642 */
643 if (vif->type == NL80211_IFTYPE_AP) {
644 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta);
645 goto out_release;
646 }
647
648 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
649 mvm->p2p_device_vif = NULL;
650 iwl_mvm_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
651 iwl_mvm_binding_remove_vif(mvm, vif);
652 iwl_mvm_phy_ctxt_remove(mvm, mvmvif->phy_ctxt);
653 mvmvif->phy_ctxt = NULL;
654 }
655
656 /*
657 * TODO: remove this temporary code.
658 * Currently MVM FW supports power management only on single MAC.
659 * Check if only one additional interface remains after removing
660 * current one. Update power mode on the remaining interface.
661 */
662 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
663 mvm->vif_count--;
664 IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n",
665 mvm->vif_count);
666 if (mvm->vif_count == 1) {
667 ieee80211_iterate_active_interfaces(
668 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
669 iwl_mvm_power_update_iterator, mvm);
670 }
671
672 iwl_mvm_mac_ctxt_remove(mvm, vif);
673
674 out_release:
675 iwl_mvm_mac_ctxt_release(mvm, vif);
676 mutex_unlock(&mvm->mutex);
677 }
678
679 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
680 {
681 return 0;
682 }
683
684 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
685 unsigned int changed_flags,
686 unsigned int *total_flags,
687 u64 multicast)
688 {
689 *total_flags = 0;
690 }
691
692 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
693 struct ieee80211_vif *vif,
694 struct ieee80211_bss_conf *bss_conf,
695 u32 changes)
696 {
697 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
698 int ret;
699
700 ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
701 if (ret)
702 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
703
704 if (changes & BSS_CHANGED_ASSOC) {
705 if (bss_conf->assoc) {
706 /* add quota for this interface */
707 ret = iwl_mvm_update_quotas(mvm, vif);
708 if (ret) {
709 IWL_ERR(mvm, "failed to update quotas\n");
710 return;
711 }
712 iwl_mvm_bt_coex_vif_assoc(mvm, vif);
713 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
714 /* remove AP station now that the MAC is unassoc */
715 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
716 if (ret)
717 IWL_ERR(mvm, "failed to remove AP station\n");
718 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
719 /* remove quota for this interface */
720 ret = iwl_mvm_update_quotas(mvm, NULL);
721 if (ret)
722 IWL_ERR(mvm, "failed to update quotas\n");
723 }
724 } else if (changes & BSS_CHANGED_DTIM_PERIOD) {
725 /*
726 * We received a beacon _after_ association so
727 * remove the session protection.
728 */
729 iwl_mvm_remove_time_event(mvm, mvmvif,
730 &mvmvif->time_event_data);
731 } else if (changes & BSS_CHANGED_PS) {
732 /*
733 * TODO: remove this temporary code.
734 * Currently MVM FW supports power management only on single
735 * MAC. Avoid power mode update if more than one interface
736 * is active.
737 */
738 IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n",
739 mvm->vif_count);
740 if (mvm->vif_count == 1) {
741 ret = iwl_mvm_power_update_mode(mvm, vif);
742 if (ret)
743 IWL_ERR(mvm, "failed to update power mode\n");
744 }
745 }
746 }
747
748 static int iwl_mvm_start_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
749 {
750 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
751 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
752 int ret;
753
754 mutex_lock(&mvm->mutex);
755
756 /* Send the beacon template */
757 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
758 if (ret)
759 goto out_unlock;
760
761 /* Add the mac context */
762 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
763 if (ret)
764 goto out_unlock;
765
766 /* Perform the binding */
767 ret = iwl_mvm_binding_add_vif(mvm, vif);
768 if (ret)
769 goto out_remove;
770
771 mvmvif->ap_active = true;
772
773 /* Send the bcast station. At this stage the TBTT and DTIM time events
774 * are added and applied to the scheduler */
775 ret = iwl_mvm_send_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
776 if (ret)
777 goto out_unbind;
778
779 ret = iwl_mvm_update_quotas(mvm, vif);
780 if (ret)
781 goto out_rm_bcast;
782
783 /* Need to update the P2P Device MAC */
784 if (vif->p2p && mvm->p2p_device_vif)
785 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
786
787 mutex_unlock(&mvm->mutex);
788 return 0;
789
790 out_rm_bcast:
791 iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
792 out_unbind:
793 iwl_mvm_binding_remove_vif(mvm, vif);
794 out_remove:
795 iwl_mvm_mac_ctxt_remove(mvm, vif);
796 out_unlock:
797 mutex_unlock(&mvm->mutex);
798 return ret;
799 }
800
801 static void iwl_mvm_stop_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
802 {
803 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
804 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
805
806 iwl_mvm_prepare_mac_removal(mvm, vif);
807
808 mutex_lock(&mvm->mutex);
809
810 mvmvif->ap_active = false;
811
812 /* Need to update the P2P Device MAC */
813 if (vif->p2p && mvm->p2p_device_vif)
814 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
815
816 iwl_mvm_update_quotas(mvm, NULL);
817 iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
818 iwl_mvm_binding_remove_vif(mvm, vif);
819 iwl_mvm_mac_ctxt_remove(mvm, vif);
820
821 mutex_unlock(&mvm->mutex);
822 }
823
824 static void iwl_mvm_bss_info_changed_ap(struct iwl_mvm *mvm,
825 struct ieee80211_vif *vif,
826 struct ieee80211_bss_conf *bss_conf,
827 u32 changes)
828 {
829 /* Need to send a new beacon template to the FW */
830 if (changes & BSS_CHANGED_BEACON) {
831 if (iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
832 IWL_WARN(mvm, "Failed updating beacon data\n");
833 }
834 }
835
836 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
837 struct ieee80211_vif *vif,
838 struct ieee80211_bss_conf *bss_conf,
839 u32 changes)
840 {
841 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
842
843 mutex_lock(&mvm->mutex);
844
845 switch (vif->type) {
846 case NL80211_IFTYPE_STATION:
847 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
848 break;
849 case NL80211_IFTYPE_AP:
850 iwl_mvm_bss_info_changed_ap(mvm, vif, bss_conf, changes);
851 break;
852 default:
853 /* shouldn't happen */
854 WARN_ON_ONCE(1);
855 }
856
857 mutex_unlock(&mvm->mutex);
858 }
859
860 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
861 struct ieee80211_vif *vif,
862 struct cfg80211_scan_request *req)
863 {
864 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
865 int ret;
866
867 if (req->n_channels == 0 || req->n_channels > MAX_NUM_SCAN_CHANNELS)
868 return -EINVAL;
869
870 mutex_lock(&mvm->mutex);
871
872 if (mvm->scan_status == IWL_MVM_SCAN_NONE)
873 ret = iwl_mvm_scan_request(mvm, vif, req);
874 else
875 ret = -EBUSY;
876
877 mutex_unlock(&mvm->mutex);
878
879 return ret;
880 }
881
882 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
883 struct ieee80211_vif *vif)
884 {
885 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
886
887 mutex_lock(&mvm->mutex);
888
889 iwl_mvm_cancel_scan(mvm);
890
891 mutex_unlock(&mvm->mutex);
892 }
893
894 static void
895 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
896 struct ieee80211_sta *sta, u16 tid,
897 int num_frames,
898 enum ieee80211_frame_release_type reason,
899 bool more_data)
900 {
901 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
902
903 /* TODO: how do we tell the fw to send frames for a specific TID */
904
905 /*
906 * The fw will send EOSP notification when the last frame will be
907 * transmitted.
908 */
909 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames);
910 }
911
912 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
913 struct ieee80211_vif *vif,
914 enum sta_notify_cmd cmd,
915 struct ieee80211_sta *sta)
916 {
917 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
918 struct iwl_mvm_sta *mvmsta = (void *)sta->drv_priv;
919
920 switch (cmd) {
921 case STA_NOTIFY_SLEEP:
922 if (atomic_read(&mvmsta->pending_frames) > 0)
923 ieee80211_sta_block_awake(hw, sta, true);
924 /*
925 * The fw updates the STA to be asleep. Tx packets on the Tx
926 * queues to this station will not be transmitted. The fw will
927 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
928 */
929 break;
930 case STA_NOTIFY_AWAKE:
931 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
932 break;
933 iwl_mvm_sta_modify_ps_wake(mvm, sta);
934 break;
935 default:
936 break;
937 }
938 }
939
940 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
941 struct ieee80211_vif *vif,
942 struct ieee80211_sta *sta,
943 enum ieee80211_sta_state old_state,
944 enum ieee80211_sta_state new_state)
945 {
946 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
947 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
948 int ret;
949
950 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
951 sta->addr, old_state, new_state);
952
953 /* this would be a mac80211 bug ... but don't crash */
954 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
955 return -EINVAL;
956
957 /* if a STA is being removed, reuse its ID */
958 flush_work(&mvm->sta_drained_wk);
959
960 mutex_lock(&mvm->mutex);
961 if (old_state == IEEE80211_STA_NOTEXIST &&
962 new_state == IEEE80211_STA_NONE) {
963 ret = iwl_mvm_add_sta(mvm, vif, sta);
964 } else if (old_state == IEEE80211_STA_NONE &&
965 new_state == IEEE80211_STA_AUTH) {
966 ret = 0;
967 } else if (old_state == IEEE80211_STA_AUTH &&
968 new_state == IEEE80211_STA_ASSOC) {
969 ret = iwl_mvm_update_sta(mvm, vif, sta);
970 if (ret == 0)
971 iwl_mvm_rs_rate_init(mvm, sta,
972 mvmvif->phy_ctxt->channel->band);
973 } else if (old_state == IEEE80211_STA_ASSOC &&
974 new_state == IEEE80211_STA_AUTHORIZED) {
975 ret = 0;
976 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
977 new_state == IEEE80211_STA_ASSOC) {
978 ret = 0;
979 } else if (old_state == IEEE80211_STA_ASSOC &&
980 new_state == IEEE80211_STA_AUTH) {
981 ret = 0;
982 } else if (old_state == IEEE80211_STA_AUTH &&
983 new_state == IEEE80211_STA_NONE) {
984 ret = 0;
985 } else if (old_state == IEEE80211_STA_NONE &&
986 new_state == IEEE80211_STA_NOTEXIST) {
987 ret = iwl_mvm_rm_sta(mvm, vif, sta);
988 } else {
989 ret = -EIO;
990 }
991 mutex_unlock(&mvm->mutex);
992
993 return ret;
994 }
995
996 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
997 {
998 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
999
1000 mvm->rts_threshold = value;
1001
1002 return 0;
1003 }
1004
1005 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
1006 struct ieee80211_vif *vif, u16 ac,
1007 const struct ieee80211_tx_queue_params *params)
1008 {
1009 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1010 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1011
1012 mvmvif->queue_params[ac] = *params;
1013
1014 /*
1015 * No need to update right away, we'll get BSS_CHANGED_QOS
1016 * The exception is P2P_DEVICE interface which needs immediate update.
1017 */
1018 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1019 int ret;
1020
1021 mutex_lock(&mvm->mutex);
1022 ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
1023 mutex_unlock(&mvm->mutex);
1024 return ret;
1025 }
1026 return 0;
1027 }
1028
1029 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
1030 struct ieee80211_vif *vif)
1031 {
1032 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1033 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
1034 200 + vif->bss_conf.beacon_int);
1035 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
1036 100 + vif->bss_conf.beacon_int);
1037
1038 if (WARN_ON_ONCE(vif->bss_conf.assoc))
1039 return;
1040
1041 mutex_lock(&mvm->mutex);
1042 /* Try really hard to protect the session and hear a beacon */
1043 iwl_mvm_protect_session(mvm, vif, duration, min_duration);
1044 mutex_unlock(&mvm->mutex);
1045 }
1046
1047 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
1048 enum set_key_cmd cmd,
1049 struct ieee80211_vif *vif,
1050 struct ieee80211_sta *sta,
1051 struct ieee80211_key_conf *key)
1052 {
1053 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1054 int ret;
1055
1056 if (iwlwifi_mod_params.sw_crypto) {
1057 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
1058 return -EOPNOTSUPP;
1059 }
1060
1061 switch (key->cipher) {
1062 case WLAN_CIPHER_SUITE_TKIP:
1063 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1064 /* fall-through */
1065 case WLAN_CIPHER_SUITE_CCMP:
1066 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1067 break;
1068 case WLAN_CIPHER_SUITE_AES_CMAC:
1069 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
1070 break;
1071 case WLAN_CIPHER_SUITE_WEP40:
1072 case WLAN_CIPHER_SUITE_WEP104:
1073 /*
1074 * Support for TX only, at least for now, so accept
1075 * the key and do nothing else. Then mac80211 will
1076 * pass it for TX but we don't have to use it for RX.
1077 */
1078 return 0;
1079 default:
1080 return -EOPNOTSUPP;
1081 }
1082
1083 mutex_lock(&mvm->mutex);
1084
1085 switch (cmd) {
1086 case SET_KEY:
1087 if (vif->type == NL80211_IFTYPE_AP && !sta) {
1088 /* GTK on AP interface is a TX-only key, return 0 */
1089 ret = 0;
1090 key->hw_key_idx = STA_KEY_IDX_INVALID;
1091 break;
1092 }
1093
1094 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
1095 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
1096 if (ret) {
1097 IWL_WARN(mvm, "set key failed\n");
1098 /*
1099 * can't add key for RX, but we don't need it
1100 * in the device for TX so still return 0
1101 */
1102 key->hw_key_idx = STA_KEY_IDX_INVALID;
1103 ret = 0;
1104 }
1105
1106 break;
1107 case DISABLE_KEY:
1108 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
1109 ret = 0;
1110 break;
1111 }
1112
1113 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
1114 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
1115 break;
1116 default:
1117 ret = -EINVAL;
1118 }
1119
1120 mutex_unlock(&mvm->mutex);
1121 return ret;
1122 }
1123
1124 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
1125 struct ieee80211_vif *vif,
1126 struct ieee80211_key_conf *keyconf,
1127 struct ieee80211_sta *sta,
1128 u32 iv32, u16 *phase1key)
1129 {
1130 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1131
1132 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
1133 }
1134
1135
1136 static int iwl_mvm_roc(struct ieee80211_hw *hw,
1137 struct ieee80211_vif *vif,
1138 struct ieee80211_channel *channel,
1139 int duration,
1140 enum ieee80211_roc_type type)
1141 {
1142 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1143 struct cfg80211_chan_def chandef;
1144 int ret;
1145
1146 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) {
1147 IWL_ERR(mvm, "vif isn't a P2P_DEVICE: %d\n", vif->type);
1148 return -EINVAL;
1149 }
1150
1151 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
1152 duration, type);
1153
1154 mutex_lock(&mvm->mutex);
1155
1156 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
1157 ret = iwl_mvm_phy_ctxt_changed(mvm, &mvm->phy_ctxt_roc,
1158 &chandef, 1, 1);
1159
1160 /* Schedule the time events */
1161 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
1162
1163 mutex_unlock(&mvm->mutex);
1164 IWL_DEBUG_MAC80211(mvm, "leave\n");
1165
1166 return ret;
1167 }
1168
1169 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
1170 {
1171 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1172
1173 IWL_DEBUG_MAC80211(mvm, "enter\n");
1174
1175 mutex_lock(&mvm->mutex);
1176 iwl_mvm_stop_p2p_roc(mvm);
1177 mutex_unlock(&mvm->mutex);
1178
1179 IWL_DEBUG_MAC80211(mvm, "leave\n");
1180 return 0;
1181 }
1182
1183 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
1184 struct ieee80211_chanctx_conf *ctx)
1185 {
1186 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1187 struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv;
1188 int ret;
1189
1190 mutex_lock(&mvm->mutex);
1191
1192 IWL_DEBUG_MAC80211(mvm, "Add PHY context\n");
1193 ret = iwl_mvm_phy_ctxt_add(mvm, phy_ctxt, &ctx->def,
1194 ctx->rx_chains_static,
1195 ctx->rx_chains_dynamic);
1196 mutex_unlock(&mvm->mutex);
1197 return ret;
1198 }
1199
1200 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
1201 struct ieee80211_chanctx_conf *ctx)
1202 {
1203 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1204 struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv;
1205
1206 mutex_lock(&mvm->mutex);
1207 iwl_mvm_phy_ctxt_remove(mvm, phy_ctxt);
1208 mutex_unlock(&mvm->mutex);
1209 }
1210
1211 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
1212 struct ieee80211_chanctx_conf *ctx,
1213 u32 changed)
1214 {
1215 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1216 struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv;
1217
1218 mutex_lock(&mvm->mutex);
1219 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->def,
1220 ctx->rx_chains_static,
1221 ctx->rx_chains_dynamic);
1222 mutex_unlock(&mvm->mutex);
1223 }
1224
1225 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
1226 struct ieee80211_vif *vif,
1227 struct ieee80211_chanctx_conf *ctx)
1228 {
1229 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1230 struct iwl_mvm_phy_ctxt *phyctx = (void *)ctx->drv_priv;
1231 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1232 int ret;
1233
1234 mutex_lock(&mvm->mutex);
1235
1236 mvmvif->phy_ctxt = phyctx;
1237
1238 switch (vif->type) {
1239 case NL80211_IFTYPE_AP:
1240 /*
1241 * The AP binding flow is handled as part of the start_ap flow
1242 * (in bss_info_changed).
1243 */
1244 ret = 0;
1245 goto out_unlock;
1246 case NL80211_IFTYPE_STATION:
1247 case NL80211_IFTYPE_ADHOC:
1248 case NL80211_IFTYPE_MONITOR:
1249 break;
1250 default:
1251 ret = -EINVAL;
1252 goto out_unlock;
1253 }
1254
1255 ret = iwl_mvm_binding_add_vif(mvm, vif);
1256 if (ret)
1257 goto out_unlock;
1258
1259 /*
1260 * Setting the quota at this stage is only required for monitor
1261 * interfaces. For the other types, the bss_info changed flow
1262 * will handle quota settings.
1263 */
1264 if (vif->type == NL80211_IFTYPE_MONITOR) {
1265 mvmvif->monitor_active = true;
1266 ret = iwl_mvm_update_quotas(mvm, vif);
1267 if (ret)
1268 goto out_remove_binding;
1269 }
1270
1271 goto out_unlock;
1272
1273 out_remove_binding:
1274 iwl_mvm_binding_remove_vif(mvm, vif);
1275 out_unlock:
1276 mutex_unlock(&mvm->mutex);
1277 if (ret)
1278 mvmvif->phy_ctxt = NULL;
1279 return ret;
1280 }
1281
1282 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
1283 struct ieee80211_vif *vif,
1284 struct ieee80211_chanctx_conf *ctx)
1285 {
1286 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1287 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1288
1289 mutex_lock(&mvm->mutex);
1290
1291 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
1292
1293 if (vif->type == NL80211_IFTYPE_AP)
1294 goto out_unlock;
1295
1296 switch (vif->type) {
1297 case NL80211_IFTYPE_MONITOR:
1298 mvmvif->monitor_active = false;
1299 iwl_mvm_update_quotas(mvm, NULL);
1300 break;
1301 default:
1302 break;
1303 }
1304
1305 iwl_mvm_binding_remove_vif(mvm, vif);
1306 out_unlock:
1307 mvmvif->phy_ctxt = NULL;
1308 mutex_unlock(&mvm->mutex);
1309 }
1310
1311 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
1312 struct ieee80211_sta *sta,
1313 bool set)
1314 {
1315 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1316 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
1317
1318 if (!mvm_sta || !mvm_sta->vif) {
1319 IWL_ERR(mvm, "Station is not associated to a vif\n");
1320 return -EINVAL;
1321 }
1322
1323 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
1324 }
1325
1326 static void iwl_mvm_mac_rssi_callback(struct ieee80211_hw *hw,
1327 struct ieee80211_vif *vif,
1328 enum ieee80211_rssi_event rssi_event)
1329 {
1330 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1331
1332 iwl_mvm_bt_rssi_event(mvm, vif, rssi_event);
1333 }
1334
1335 struct ieee80211_ops iwl_mvm_hw_ops = {
1336 .tx = iwl_mvm_mac_tx,
1337 .ampdu_action = iwl_mvm_mac_ampdu_action,
1338 .start = iwl_mvm_mac_start,
1339 .restart_complete = iwl_mvm_mac_restart_complete,
1340 .stop = iwl_mvm_mac_stop,
1341 .add_interface = iwl_mvm_mac_add_interface,
1342 .remove_interface = iwl_mvm_mac_remove_interface,
1343 .config = iwl_mvm_mac_config,
1344 .configure_filter = iwl_mvm_configure_filter,
1345 .bss_info_changed = iwl_mvm_bss_info_changed,
1346 .hw_scan = iwl_mvm_mac_hw_scan,
1347 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
1348 .sta_state = iwl_mvm_mac_sta_state,
1349 .sta_notify = iwl_mvm_mac_sta_notify,
1350 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
1351 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
1352 .conf_tx = iwl_mvm_mac_conf_tx,
1353 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
1354 .set_key = iwl_mvm_mac_set_key,
1355 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
1356 .remain_on_channel = iwl_mvm_roc,
1357 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
1358 .rssi_callback = iwl_mvm_mac_rssi_callback,
1359
1360 .add_chanctx = iwl_mvm_add_chanctx,
1361 .remove_chanctx = iwl_mvm_remove_chanctx,
1362 .change_chanctx = iwl_mvm_change_chanctx,
1363 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
1364 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
1365
1366 .start_ap = iwl_mvm_start_ap,
1367 .stop_ap = iwl_mvm_stop_ap,
1368
1369 .set_tim = iwl_mvm_set_tim,
1370
1371 #ifdef CONFIG_PM_SLEEP
1372 /* look at d3.c */
1373 .suspend = iwl_mvm_suspend,
1374 .resume = iwl_mvm_resume,
1375 .set_wakeup = iwl_mvm_set_wakeup,
1376 .set_rekey_data = iwl_mvm_set_rekey_data,
1377 #if IS_ENABLED(CONFIG_IPV6)
1378 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
1379 #endif
1380 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
1381 #endif
1382 };
Linux kernel - Deliverables
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