projects / linux-2.6-block.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
iwlwifi: mvm: re-aggregate shared queue after unsharing
[linux-2.6-block.git] / drivers / net / wireless / intel / iwlwifi / mvm / sta.c
CommitLineData
8ca151b5
JB		 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 *
fa7878e7
AO		 8 * Copyright(c) 2012 - 2015 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
854c5705 10 * Copyright(c) 2016 Intel Deutschland GmbH
8ca151b5
JB		 11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of version 2 of the GNU General Public License as
14 * published by the Free Software Foundation.
15 *
16 * This program is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
24 * USA
25 *
26 * The full GNU General Public License is included in this distribution
410dc5aa 27 * in the file called COPYING.
8ca151b5
JB		 28 *
29 * Contact Information:
cb2f8277 30 * Intel Linux Wireless <linuxwifi@intel.com>
8ca151b5
JB		 31 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
32 *
33 * BSD LICENSE
34 *
fa7878e7
AO		 35 * Copyright(c) 2012 - 2015 Intel Corporation. All rights reserved.
36 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
854c5705 37 * Copyright(c) 2016 Intel Deutschland GmbH
8ca151b5
JB		 38 * All rights reserved.
39 *
40 * Redistribution and use in source and binary forms, with or without
41 * modification, are permitted provided that the following conditions
42 * are met:
43 *
44 * * Redistributions of source code must retain the above copyright
45 * notice, this list of conditions and the following disclaimer.
46 * * Redistributions in binary form must reproduce the above copyright
47 * notice, this list of conditions and the following disclaimer in
48 * the documentation and/or other materials provided with the
49 * distribution.
50 * * Neither the name Intel Corporation nor the names of its
51 * contributors may be used to endorse or promote products derived
52 * from this software without specific prior written permission.
53 *
54 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
55 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
56 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
57 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
58 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
59 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
60 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
61 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
62 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
63 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
64 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
65 *
66 *****************************************************************************/
67#include <net/mac80211.h>
68
69#include "mvm.h"
70#include "sta.h"
9ee718aa 71#include "rs.h"
8ca151b5 72
854c5705
SS		 73/*
74 * New version of ADD_STA_sta command added new fields at the end of the
75 * structure, so sending the size of the relevant API's structure is enough to
76 * support both API versions.
77 */
78static inline int iwl_mvm_add_sta_cmd_size(struct iwl_mvm *mvm)
79{
80 return iwl_mvm_has_new_rx_api(mvm) ?
81 sizeof(struct iwl_mvm_add_sta_cmd) :
82 sizeof(struct iwl_mvm_add_sta_cmd_v7);
83}
84
b92e661b
EP		 85static int iwl_mvm_find_free_sta_id(struct iwl_mvm *mvm,
86 enum nl80211_iftype iftype)
8ca151b5
JB		 87{
88 int sta_id;
b92e661b 89 u32 reserved_ids = 0;
8ca151b5 90
b92e661b 91 BUILD_BUG_ON(IWL_MVM_STATION_COUNT > 32);
8ca151b5
JB		 92 WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status));
93
94 lockdep_assert_held(&mvm->mutex);
95
b92e661b
EP		 96 /* d0i3/d3 assumes the AP's sta_id (of sta vif) is 0. reserve it. */
97 if (iftype != NL80211_IFTYPE_STATION)
98 reserved_ids = BIT(0);
99
8ca151b5 100 /* Don't take rcu_read_lock() since we are protected by mvm->mutex */
b92e661b
EP		 101 for (sta_id = 0; sta_id < IWL_MVM_STATION_COUNT; sta_id++) {
102 if (BIT(sta_id) & reserved_ids)
103 continue;
104
8ca151b5
JB		 105 if (!rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
106 lockdep_is_held(&mvm->mutex)))
107 return sta_id;
b92e661b 108 }
8ca151b5
JB		 109 return IWL_MVM_STATION_COUNT;
110}
111
7a453973
JB		 112/* send station add/update command to firmware */
113int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
24afba76 114 bool update, unsigned int flags)
8ca151b5 115{
9d8ce6af 116 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
4b8265ab
EG		 117 struct iwl_mvm_add_sta_cmd add_sta_cmd = {
118 .sta_id = mvm_sta->sta_id,
119 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color),
120 .add_modify = update ? 1 : 0,
121 .station_flags_msk = cpu_to_le32(STA_FLG_FAT_EN_MSK |
122 STA_FLG_MIMO_EN_MSK),
cf0cda19 123 .tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg),
4b8265ab 124 };
8ca151b5
JB		 125 int ret;
126 u32 status;
127 u32 agg_size = 0, mpdu_dens = 0;
128
24afba76 129 if (!update || (flags & STA_MODIFY_QUEUES)) {
7a453973
JB		 130 add_sta_cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk);
131 memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN);
24afba76
LK		 132
133 if (flags & STA_MODIFY_QUEUES)
134 add_sta_cmd.modify_mask |= STA_MODIFY_QUEUES;
7a453973 135 }
5bc5aaad
JB		 136
137 switch (sta->bandwidth) {
138 case IEEE80211_STA_RX_BW_160:
139 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ);
140 /* fall through */
141 case IEEE80211_STA_RX_BW_80:
142 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ);
143 /* fall through */
144 case IEEE80211_STA_RX_BW_40:
145 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ);
146 /* fall through */
147 case IEEE80211_STA_RX_BW_20:
148 if (sta->ht_cap.ht_supported)
149 add_sta_cmd.station_flags |=
150 cpu_to_le32(STA_FLG_FAT_EN_20MHZ);
151 break;
152 }
153
154 switch (sta->rx_nss) {
155 case 1:
156 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO);
157 break;
158 case 2:
159 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2);
160 break;
161 case 3 ... 8:
162 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3);
163 break;
164 }
165
166 switch (sta->smps_mode) {
167 case IEEE80211_SMPS_AUTOMATIC:
168 case IEEE80211_SMPS_NUM_MODES:
169 WARN_ON(1);
170 break;
171 case IEEE80211_SMPS_STATIC:
172 /* override NSS */
173 add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK);
174 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO);
175 break;
176 case IEEE80211_SMPS_DYNAMIC:
177 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT);
178 break;
179 case IEEE80211_SMPS_OFF:
180 /* nothing */
181 break;
182 }
8ca151b5
JB		 183
184 if (sta->ht_cap.ht_supported) {
185 add_sta_cmd.station_flags_msk |=
186 cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK |
187 STA_FLG_AGG_MPDU_DENS_MSK);
188
189 mpdu_dens = sta->ht_cap.ampdu_density;
190 }
191
192 if (sta->vht_cap.vht_supported) {
193 agg_size = sta->vht_cap.cap &
194 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
195 agg_size >>=
196 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT;
197 } else if (sta->ht_cap.ht_supported) {
198 agg_size = sta->ht_cap.ampdu_factor;
199 }
200
201 add_sta_cmd.station_flags |=
202 cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT);
203 add_sta_cmd.station_flags |=
204 cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT);
205
206 status = ADD_STA_SUCCESS;
854c5705
SS		 207 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
208 iwl_mvm_add_sta_cmd_size(mvm),
f9dc0004 209 &add_sta_cmd, &status);
8ca151b5
JB		 210 if (ret)
211 return ret;
212
837c4da9 213 switch (status & IWL_ADD_STA_STATUS_MASK) {
8ca151b5
JB		 214 case ADD_STA_SUCCESS:
215 IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n");
216 break;
217 default:
218 ret = -EIO;
219 IWL_ERR(mvm, "ADD_STA failed\n");
220 break;
221 }
222
223 return ret;
224}
225
10b2b201
SS		 226static void iwl_mvm_rx_agg_session_expired(unsigned long data)
227{
228 struct iwl_mvm_baid_data __rcu **rcu_ptr = (void *)data;
229 struct iwl_mvm_baid_data *ba_data;
230 struct ieee80211_sta *sta;
231 struct iwl_mvm_sta *mvm_sta;
232 unsigned long timeout;
233
234 rcu_read_lock();
235
236 ba_data = rcu_dereference(*rcu_ptr);
237
238 if (WARN_ON(!ba_data))
239 goto unlock;
240
241 if (!ba_data->timeout)
242 goto unlock;
243
244 timeout = ba_data->last_rx + TU_TO_JIFFIES(ba_data->timeout * 2);
245 if (time_is_after_jiffies(timeout)) {
246 mod_timer(&ba_data->session_timer, timeout);
247 goto unlock;
248 }
249
250 /* Timer expired */
251 sta = rcu_dereference(ba_data->mvm->fw_id_to_mac_id[ba_data->sta_id]);
252 mvm_sta = iwl_mvm_sta_from_mac80211(sta);
253 ieee80211_stop_rx_ba_session_offl(mvm_sta->vif,
254 sta->addr, ba_data->tid);
255unlock:
256 rcu_read_unlock();
257}
258
a0f6bf2a
AN		 259static int iwl_mvm_tdls_sta_init(struct iwl_mvm *mvm,
260 struct ieee80211_sta *sta)
261{
262 unsigned long used_hw_queues;
263 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
5d42e7b2
EG		 264 unsigned int wdg_timeout =
265 iwl_mvm_get_wd_timeout(mvm, NULL, true, false);
a0f6bf2a
AN		 266 u32 ac;
267
268 lockdep_assert_held(&mvm->mutex);
269
270 used_hw_queues = iwl_mvm_get_used_hw_queues(mvm, NULL);
271
272 /* Find available queues, and allocate them to the ACs */
273 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
274 u8 queue = find_first_zero_bit(&used_hw_queues,
275 mvm->first_agg_queue);
276
277 if (queue >= mvm->first_agg_queue) {
278 IWL_ERR(mvm, "Failed to allocate STA queue\n");
279 return -EBUSY;
280 }
281
282 __set_bit(queue, &used_hw_queues);
283 mvmsta->hw_queue[ac] = queue;
284 }
285
286 /* Found a place for all queues - enable them */
287 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
288 iwl_mvm_enable_ac_txq(mvm, mvmsta->hw_queue[ac],
4ecafae9 289 mvmsta->hw_queue[ac],
5c1156ef
LK		 290 iwl_mvm_ac_to_tx_fifo[ac], 0,
291 wdg_timeout);
a0f6bf2a
AN		 292 mvmsta->tfd_queue_msk |= BIT(mvmsta->hw_queue[ac]);
293 }
294
295 return 0;
296}
297
298static void iwl_mvm_tdls_sta_deinit(struct iwl_mvm *mvm,
299 struct ieee80211_sta *sta)
300{
301 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
302 unsigned long sta_msk;
303 int i;
304
305 lockdep_assert_held(&mvm->mutex);
306
307 /* disable the TDLS STA-specific queues */
308 sta_msk = mvmsta->tfd_queue_msk;
a4ca3ed4 309 for_each_set_bit(i, &sta_msk, sizeof(sta_msk) * BITS_PER_BYTE)
06ecdba3 310 iwl_mvm_disable_txq(mvm, i, i, IWL_MAX_TID_COUNT, 0);
a0f6bf2a
AN		 311}
312
9794c64f
LK		 313/* Disable aggregations for a bitmap of TIDs for a given station */
314static int iwl_mvm_invalidate_sta_queue(struct iwl_mvm *mvm, int queue,
315 unsigned long disable_agg_tids,
316 bool remove_queue)
317{
318 struct iwl_mvm_add_sta_cmd cmd = {};
319 struct ieee80211_sta *sta;
320 struct iwl_mvm_sta *mvmsta;
321 u32 status;
322 u8 sta_id;
323 int ret;
324
325 spin_lock_bh(&mvm->queue_info_lock);
326 sta_id = mvm->queue_info[queue].ra_sta_id;
327 spin_unlock_bh(&mvm->queue_info_lock);
328
329 rcu_read_lock();
330
331 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
332
333 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) {
334 rcu_read_unlock();
335 return -EINVAL;
336 }
337
338 mvmsta = iwl_mvm_sta_from_mac80211(sta);
339
340 mvmsta->tid_disable_agg |= disable_agg_tids;
341
342 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color);
343 cmd.sta_id = mvmsta->sta_id;
344 cmd.add_modify = STA_MODE_MODIFY;
345 cmd.modify_mask = STA_MODIFY_QUEUES;
346 if (disable_agg_tids)
347 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX;
348 if (remove_queue)
349 cmd.modify_mask |= STA_MODIFY_QUEUE_REMOVAL;
350 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk);
351 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg);
352
353 rcu_read_unlock();
354
355 /* Notify FW of queue removal from the STA queues */
356 status = ADD_STA_SUCCESS;
357 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
358 iwl_mvm_add_sta_cmd_size(mvm),
359 &cmd, &status);
360
361 return ret;
362}
363
42db09c1
LK		 364static int iwl_mvm_get_queue_agg_tids(struct iwl_mvm *mvm, int queue)
365{
366 struct ieee80211_sta *sta;
367 struct iwl_mvm_sta *mvmsta;
368 unsigned long tid_bitmap;
369 unsigned long agg_tids = 0;
370 s8 sta_id;
371 int tid;
372
373 lockdep_assert_held(&mvm->mutex);
374
375 spin_lock_bh(&mvm->queue_info_lock);
376 sta_id = mvm->queue_info[queue].ra_sta_id;
377 tid_bitmap = mvm->queue_info[queue].tid_bitmap;
378 spin_unlock_bh(&mvm->queue_info_lock);
379
380 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
381 lockdep_is_held(&mvm->mutex));
382
383 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
384 return -EINVAL;
385
386 mvmsta = iwl_mvm_sta_from_mac80211(sta);
387
388 spin_lock_bh(&mvmsta->lock);
389 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
390 if (mvmsta->tid_data[tid].state == IWL_AGG_ON)
391 agg_tids |= BIT(tid);
392 }
393 spin_unlock_bh(&mvmsta->lock);
394
395 return agg_tids;
396}
397
9794c64f
LK		 398/*
399 * Remove a queue from a station's resources.
400 * Note that this only marks as free. It DOESN'T delete a BA agreement, and
401 * doesn't disable the queue
402 */
403static int iwl_mvm_remove_sta_queue_marking(struct iwl_mvm *mvm, int queue)
404{
405 struct ieee80211_sta *sta;
406 struct iwl_mvm_sta *mvmsta;
407 unsigned long tid_bitmap;
408 unsigned long disable_agg_tids = 0;
409 u8 sta_id;
410 int tid;
411
412 lockdep_assert_held(&mvm->mutex);
413
414 spin_lock_bh(&mvm->queue_info_lock);
415 sta_id = mvm->queue_info[queue].ra_sta_id;
416 tid_bitmap = mvm->queue_info[queue].tid_bitmap;
417 spin_unlock_bh(&mvm->queue_info_lock);
418
419 rcu_read_lock();
420
421 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
422
423 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) {
424 rcu_read_unlock();
425 return 0;
426 }
427
428 mvmsta = iwl_mvm_sta_from_mac80211(sta);
429
430 spin_lock_bh(&mvmsta->lock);
42db09c1 431 /* Unmap MAC queues and TIDs from this queue */
9794c64f 432 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
9794c64f
LK		 433 if (mvmsta->tid_data[tid].state == IWL_AGG_ON)
434 disable_agg_tids |= BIT(tid);
42db09c1 435 mvmsta->tid_data[tid].txq_id = IEEE80211_INVAL_HW_QUEUE;
9794c64f 436 }
9794c64f 437
42db09c1 438 mvmsta->tfd_queue_msk &= ~BIT(queue); /* Don't use this queue anymore */
9794c64f
LK		 439 spin_unlock_bh(&mvmsta->lock);
440
441 rcu_read_unlock();
442
42db09c1 443 spin_lock_bh(&mvm->queue_info_lock);
9794c64f
LK		 444 /* Unmap MAC queues and TIDs from this queue */
445 mvm->queue_info[queue].hw_queue_to_mac80211 = 0;
446 mvm->queue_info[queue].hw_queue_refcount = 0;
447 mvm->queue_info[queue].tid_bitmap = 0;
42db09c1 448 spin_unlock_bh(&mvm->queue_info_lock);
9794c64f
LK		 449
450 return disable_agg_tids;
451}
452
42db09c1
LK		 453static int iwl_mvm_get_shared_queue(struct iwl_mvm *mvm,
454 unsigned long tfd_queue_mask, u8 ac)
455{
456 int queue = 0;
457 u8 ac_to_queue[IEEE80211_NUM_ACS];
458 int i;
459
460 lockdep_assert_held(&mvm->queue_info_lock);
461
462 memset(&ac_to_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(ac_to_queue));
463
464 /* See what ACs the existing queues for this STA have */
465 for_each_set_bit(i, &tfd_queue_mask, IWL_MVM_DQA_MAX_DATA_QUEUE) {
466 /* Only DATA queues can be shared */
467 if (i < IWL_MVM_DQA_MIN_DATA_QUEUE &&
468 i != IWL_MVM_DQA_BSS_CLIENT_QUEUE)
469 continue;
470
9f9af3d7
LK		 471 /* Don't try and take queues being reconfigured */
472 if (mvm->queue_info[queue].status ==
473 IWL_MVM_QUEUE_RECONFIGURING)
474 continue;
475
42db09c1
LK		 476 ac_to_queue[mvm->queue_info[i].mac80211_ac] = i;
477 }
478
479 /*
480 * The queue to share is chosen only from DATA queues as follows (in
481 * descending priority):
482 * 1. An AC_BE queue
483 * 2. Same AC queue
484 * 3. Highest AC queue that is lower than new AC
485 * 4. Any existing AC (there always is at least 1 DATA queue)
486 */
487
488 /* Priority 1: An AC_BE queue */
489 if (ac_to_queue[IEEE80211_AC_BE] != IEEE80211_INVAL_HW_QUEUE)
490 queue = ac_to_queue[IEEE80211_AC_BE];
491 /* Priority 2: Same AC queue */
492 else if (ac_to_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
493 queue = ac_to_queue[ac];
494 /* Priority 3a: If new AC is VO and VI exists - use VI */
495 else if (ac == IEEE80211_AC_VO &&
496 ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE)
497 queue = ac_to_queue[IEEE80211_AC_VI];
498 /* Priority 3b: No BE so only AC less than the new one is BK */
499 else if (ac_to_queue[IEEE80211_AC_BK] != IEEE80211_INVAL_HW_QUEUE)
500 queue = ac_to_queue[IEEE80211_AC_BK];
501 /* Priority 4a: No BE nor BK - use VI if exists */
502 else if (ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE)
503 queue = ac_to_queue[IEEE80211_AC_VI];
504 /* Priority 4b: No BE, BK nor VI - use VO if exists */
505 else if (ac_to_queue[IEEE80211_AC_VO] != IEEE80211_INVAL_HW_QUEUE)
506 queue = ac_to_queue[IEEE80211_AC_VO];
507
508 /* Make sure queue found (or not) is legal */
9f9af3d7
LK		 509 if (!iwl_mvm_is_dqa_data_queue(mvm, queue) &&
510 !iwl_mvm_is_dqa_mgmt_queue(mvm, queue) &&
511 (queue != IWL_MVM_DQA_BSS_CLIENT_QUEUE)) {
42db09c1 512 IWL_ERR(mvm, "No DATA queues available to share\n");
9f9af3d7
LK		 513 return -ENOSPC;
514 }
515
516 /* Make sure the queue isn't in the middle of being reconfigured */
517 if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_RECONFIGURING) {
518 IWL_ERR(mvm,
519 "TXQ %d is in the middle of re-config - try again\n",
520 queue);
521 return -EBUSY;
42db09c1
LK		 522 }
523
524 return queue;
525}
526
58f2cc57 527/*
9f9af3d7
LK		 528 * If a given queue has a higher AC than the TID stream that is being compared
529 * to, the queue needs to be redirected to the lower AC. This function does that
58f2cc57
LK		 530 * in such a case, otherwise - if no redirection required - it does nothing,
531 * unless the %force param is true.
532 */
9f9af3d7
LK		 533int iwl_mvm_scd_queue_redirect(struct iwl_mvm *mvm, int queue, int tid,
534 int ac, int ssn, unsigned int wdg_timeout,
535 bool force)
58f2cc57
LK		 536{
537 struct iwl_scd_txq_cfg_cmd cmd = {
538 .scd_queue = queue,
539 .enable = 0,
540 };
541 bool shared_queue;
542 unsigned long mq;
543 int ret;
544
545 /*
546 * If the AC is lower than current one - FIFO needs to be redirected to
547 * the lowest one of the streams in the queue. Check if this is needed
548 * here.
549 * Notice that the enum ieee80211_ac_numbers is "flipped", so BK is with
550 * value 3 and VO with value 0, so to check if ac X is lower than ac Y
551 * we need to check if the numerical value of X is LARGER than of Y.
552 */
553 spin_lock_bh(&mvm->queue_info_lock);
554 if (ac <= mvm->queue_info[queue].mac80211_ac && !force) {
555 spin_unlock_bh(&mvm->queue_info_lock);
556
557 IWL_DEBUG_TX_QUEUES(mvm,
558 "No redirection needed on TXQ #%d\n",
559 queue);
560 return 0;
561 }
562
563 cmd.sta_id = mvm->queue_info[queue].ra_sta_id;
564 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[mvm->queue_info[queue].mac80211_ac];
565 mq = mvm->queue_info[queue].hw_queue_to_mac80211;
566 shared_queue = (mvm->queue_info[queue].hw_queue_refcount > 1);
567 spin_unlock_bh(&mvm->queue_info_lock);
568
9f9af3d7 569 IWL_DEBUG_TX_QUEUES(mvm, "Redirecting TXQ #%d to FIFO #%d\n",
58f2cc57
LK		 570 queue, iwl_mvm_ac_to_tx_fifo[ac]);
571
572 /* Stop MAC queues and wait for this queue to empty */
573 iwl_mvm_stop_mac_queues(mvm, mq);
574 ret = iwl_trans_wait_tx_queue_empty(mvm->trans, BIT(queue));
575 if (ret) {
576 IWL_ERR(mvm, "Error draining queue %d before reconfig\n",
577 queue);
578 ret = -EIO;
579 goto out;
580 }
581
582 /* Before redirecting the queue we need to de-activate it */
583 iwl_trans_txq_disable(mvm->trans, queue, false);
584 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd);
585 if (ret)
586 IWL_ERR(mvm, "Failed SCD disable TXQ %d (ret=%d)\n", queue,
587 ret);
588
589 /* Make sure the SCD wrptr is correctly set before reconfiguring */
590 iwl_trans_txq_enable(mvm->trans, queue, iwl_mvm_ac_to_tx_fifo[ac],
591 cmd.sta_id, tid, LINK_QUAL_AGG_FRAME_LIMIT_DEF,
592 ssn, wdg_timeout);
593
594 /* TODO: Work-around SCD bug when moving back by multiples of 0x40 */
595
596 /* Redirect to lower AC */
597 iwl_mvm_reconfig_scd(mvm, queue, iwl_mvm_ac_to_tx_fifo[ac],
598 cmd.sta_id, tid, LINK_QUAL_AGG_FRAME_LIMIT_DEF,
599 ssn);
600
601 /* Update AC marking of the queue */
602 spin_lock_bh(&mvm->queue_info_lock);
603 mvm->queue_info[queue].mac80211_ac = ac;
604 spin_unlock_bh(&mvm->queue_info_lock);
605
606 /*
607 * Mark queue as shared in transport if shared
608 * Note this has to be done after queue enablement because enablement
609 * can also set this value, and there is no indication there to shared
610 * queues
611 */
612 if (shared_queue)
613 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true);
614
615out:
616 /* Continue using the MAC queues */
617 iwl_mvm_start_mac_queues(mvm, mq);
618
619 return ret;
620}
621
24afba76
LK		 622static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm,
623 struct ieee80211_sta *sta, u8 ac, int tid,
624 struct ieee80211_hdr *hdr)
625{
626 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
627 struct iwl_trans_txq_scd_cfg cfg = {
628 .fifo = iwl_mvm_ac_to_tx_fifo[ac],
629 .sta_id = mvmsta->sta_id,
630 .tid = tid,
631 .frame_limit = IWL_FRAME_LIMIT,
632 };
633 unsigned int wdg_timeout =
634 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false);
635 u8 mac_queue = mvmsta->vif->hw_queue[ac];
636 int queue = -1;
9794c64f
LK		 637 bool using_inactive_queue = false;
638 unsigned long disable_agg_tids = 0;
639 enum iwl_mvm_agg_state queue_state;
42db09c1 640 bool shared_queue = false;
24afba76 641 int ssn;
42db09c1 642 unsigned long tfd_queue_mask;
cf961e16 643 int ret;
24afba76
LK		 644
645 lockdep_assert_held(&mvm->mutex);
646
42db09c1
LK		 647 spin_lock_bh(&mvmsta->lock);
648 tfd_queue_mask = mvmsta->tfd_queue_msk;
649 spin_unlock_bh(&mvmsta->lock);
650
d2515a99 651 spin_lock_bh(&mvm->queue_info_lock);
24afba76
LK		 652
653 /*
654 * Non-QoS, QoS NDP and MGMT frames should go to a MGMT queue, if one
655 * exists
656 */
657 if (!ieee80211_is_data_qos(hdr->frame_control) ||
658 ieee80211_is_qos_nullfunc(hdr->frame_control)) {
9794c64f
LK		 659 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id,
660 IWL_MVM_DQA_MIN_MGMT_QUEUE,
24afba76
LK		 661 IWL_MVM_DQA_MAX_MGMT_QUEUE);
662 if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE)
663 IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n",
664 queue);
665
666 /* If no such queue is found, we'll use a DATA queue instead */
667 }
668
9794c64f
LK		 669 if ((queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) &&
670 (mvm->queue_info[mvmsta->reserved_queue].status ==
671 IWL_MVM_QUEUE_RESERVED ||
672 mvm->queue_info[mvmsta->reserved_queue].status ==
673 IWL_MVM_QUEUE_INACTIVE)) {
24afba76 674 queue = mvmsta->reserved_queue;
9794c64f 675 mvm->queue_info[queue].reserved = true;
24afba76
LK		 676 IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue);
677 }
678
679 if (queue < 0)
9794c64f
LK		 680 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id,
681 IWL_MVM_DQA_MIN_DATA_QUEUE,
24afba76 682 IWL_MVM_DQA_MAX_DATA_QUEUE);
cf961e16 683
9794c64f
LK		 684 /*
685 * Check if this queue is already allocated but inactive.
686 * In such a case, we'll need to first free this queue before enabling
687 * it again, so we'll mark it as reserved to make sure no new traffic
688 * arrives on it
689 */
690 if (queue > 0 &&
691 mvm->queue_info[queue].status == IWL_MVM_QUEUE_INACTIVE) {
692 mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED;
693 using_inactive_queue = true;
694 IWL_DEBUG_TX_QUEUES(mvm,
695 "Re-assigning TXQ %d: sta_id=%d, tid=%d\n",
696 queue, mvmsta->sta_id, tid);
697 }
698
42db09c1
LK		 699 /* No free queue - we'll have to share */
700 if (queue <= 0) {
701 queue = iwl_mvm_get_shared_queue(mvm, tfd_queue_mask, ac);
702 if (queue > 0) {
703 shared_queue = true;
704 mvm->queue_info[queue].status = IWL_MVM_QUEUE_SHARED;
705 }
706 }
707
cf961e16
LK		 708 /*
709 * Mark TXQ as ready, even though it hasn't been fully configured yet,
710 * to make sure no one else takes it.
711 * This will allow avoiding re-acquiring the lock at the end of the
712 * configuration. On error we'll mark it back as free.
713 */
42db09c1 714 if ((queue > 0) && !shared_queue)
cf961e16 715 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY;
24afba76 716
d2515a99 717 spin_unlock_bh(&mvm->queue_info_lock);
24afba76 718
42db09c1
LK		 719 /* This shouldn't happen - out of queues */
720 if (WARN_ON(queue <= 0)) {
721 IWL_ERR(mvm, "No available queues for tid %d on sta_id %d\n",
722 tid, cfg.sta_id);
9f9af3d7 723 return queue;
42db09c1 724 }
24afba76
LK		 725
726 /*
727 * Actual en/disablement of aggregations is through the ADD_STA HCMD,
728 * but for configuring the SCD to send A-MPDUs we need to mark the queue
729 * as aggregatable.
730 * Mark all DATA queues as allowing to be aggregated at some point
731 */
d5216a28
LK		 732 cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE ||
733 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE);
24afba76 734
9794c64f
LK		 735 /*
736 * If this queue was previously inactive (idle) - we need to free it
737 * first
738 */
739 if (using_inactive_queue) {
740 struct iwl_scd_txq_cfg_cmd cmd = {
741 .scd_queue = queue,
742 .enable = 0,
743 };
93f436e2 744 u8 ac;
9794c64f
LK		 745
746 disable_agg_tids = iwl_mvm_remove_sta_queue_marking(mvm, queue);
747
93f436e2
LK		 748 spin_lock_bh(&mvm->queue_info_lock);
749 ac = mvm->queue_info[queue].mac80211_ac;
750 cmd.sta_id = mvm->queue_info[queue].ra_sta_id;
751 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[ac];
752 spin_unlock_bh(&mvm->queue_info_lock);
753
9794c64f
LK		 754 /* Disable the queue */
755 iwl_mvm_invalidate_sta_queue(mvm, queue, disable_agg_tids,
756 true);
757 iwl_trans_txq_disable(mvm->trans, queue, false);
758 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd),
759 &cmd);
760 if (ret) {
761 IWL_ERR(mvm,
762 "Failed to free inactive queue %d (ret=%d)\n",
763 queue, ret);
764
765 /* Re-mark the inactive queue as inactive */
766 spin_lock_bh(&mvm->queue_info_lock);
767 mvm->queue_info[queue].status = IWL_MVM_QUEUE_INACTIVE;
768 spin_unlock_bh(&mvm->queue_info_lock);
769
770 return ret;
771 }
772 }
773
42db09c1
LK		 774 IWL_DEBUG_TX_QUEUES(mvm,
775 "Allocating %squeue #%d to sta %d on tid %d\n",
776 shared_queue ? "shared " : "", queue,
777 mvmsta->sta_id, tid);
778
779 if (shared_queue) {
780 /* Disable any open aggs on this queue */
781 disable_agg_tids = iwl_mvm_get_queue_agg_tids(mvm, queue);
782
783 if (disable_agg_tids) {
784 IWL_DEBUG_TX_QUEUES(mvm, "Disabling aggs on queue %d\n",
785 queue);
786 iwl_mvm_invalidate_sta_queue(mvm, queue,
787 disable_agg_tids, false);
788 }
42db09c1 789 }
24afba76
LK		 790
791 ssn = IEEE80211_SEQ_TO_SN(le16_to_cpu(hdr->seq_ctrl));
792 iwl_mvm_enable_txq(mvm, queue, mac_queue, ssn, &cfg,
793 wdg_timeout);
794
58f2cc57
LK		 795 /*
796 * Mark queue as shared in transport if shared
797 * Note this has to be done after queue enablement because enablement
798 * can also set this value, and there is no indication there to shared
799 * queues
800 */
801 if (shared_queue)
802 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true);
803
24afba76
LK		 804 spin_lock_bh(&mvmsta->lock);
805 mvmsta->tid_data[tid].txq_id = queue;
9794c64f 806 mvmsta->tid_data[tid].is_tid_active = true;
24afba76 807 mvmsta->tfd_queue_msk |= BIT(queue);
9794c64f 808 queue_state = mvmsta->tid_data[tid].state;
24afba76
LK		 809
810 if (mvmsta->reserved_queue == queue)
811 mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE;
812 spin_unlock_bh(&mvmsta->lock);
813
42db09c1
LK		 814 if (!shared_queue) {
815 ret = iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES);
816 if (ret)
817 goto out_err;
cf961e16 818
42db09c1
LK		 819 /* If we need to re-enable aggregations... */
820 if (queue_state == IWL_AGG_ON) {
821 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);
822 if (ret)
823 goto out_err;
824 }
58f2cc57
LK		 825 } else {
826 /* Redirect queue, if needed */
827 ret = iwl_mvm_scd_queue_redirect(mvm, queue, tid, ac, ssn,
828 wdg_timeout, false);
829 if (ret)
830 goto out_err;
42db09c1 831 }
9794c64f 832
42db09c1 833 return 0;
cf961e16
LK		 834
835out_err:
836 iwl_mvm_disable_txq(mvm, queue, mac_queue, tid, 0);
837
838 return ret;
24afba76
LK		 839}
840
9f9af3d7
LK		 841static void iwl_mvm_unshare_queue(struct iwl_mvm *mvm, int queue)
842{
843 struct ieee80211_sta *sta;
844 struct iwl_mvm_sta *mvmsta;
845 s8 sta_id;
846 int tid = -1;
847 unsigned long tid_bitmap;
848 unsigned int wdg_timeout;
849 int ssn;
850 int ret = true;
851
852 lockdep_assert_held(&mvm->mutex);
853
854 spin_lock_bh(&mvm->queue_info_lock);
855 sta_id = mvm->queue_info[queue].ra_sta_id;
856 tid_bitmap = mvm->queue_info[queue].tid_bitmap;
857 spin_unlock_bh(&mvm->queue_info_lock);
858
859 /* Find TID for queue, and make sure it is the only one on the queue */
860 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1);
861 if (tid_bitmap != BIT(tid)) {
862 IWL_ERR(mvm, "Failed to unshare q %d, active tids=0x%lx\n",
863 queue, tid_bitmap);
864 return;
865 }
866
867 IWL_DEBUG_TX_QUEUES(mvm, "Unsharing TXQ %d, keeping tid %d\n", queue,
868 tid);
869
870 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
871 lockdep_is_held(&mvm->mutex));
872
873 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
874 return;
875
876 mvmsta = iwl_mvm_sta_from_mac80211(sta);
877 wdg_timeout = iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false);
878
879 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number);
880
881 ret = iwl_mvm_scd_queue_redirect(mvm, queue, tid,
882 tid_to_mac80211_ac[tid], ssn,
883 wdg_timeout, true);
884 if (ret) {
885 IWL_ERR(mvm, "Failed to redirect TXQ %d\n", queue);
886 return;
887 }
888
889 /* If aggs should be turned back on - do it */
890 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) {
891 struct iwl_mvm_add_sta_cmd cmd;
892
893 mvmsta->tid_disable_agg &= ~BIT(tid);
894
895 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color);
896 cmd.sta_id = mvmsta->sta_id;
897 cmd.add_modify = STA_MODE_MODIFY;
898 cmd.modify_mask = STA_MODIFY_TID_DISABLE_TX;
899 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk);
900 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg);
901
902 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
903 iwl_mvm_add_sta_cmd_size(mvm), &cmd);
904 if (!ret) {
905 IWL_DEBUG_TX_QUEUES(mvm,
906 "TXQ #%d is now aggregated again\n",
907 queue);
908
909 /* Mark queue intenally as aggregating again */
910 iwl_trans_txq_set_shared_mode(mvm->trans, queue, false);
911 }
912 }
913
914 spin_lock_bh(&mvm->queue_info_lock);
915 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY;
916 spin_unlock_bh(&mvm->queue_info_lock);
917}
918
24afba76
LK		 919static inline u8 iwl_mvm_tid_to_ac_queue(int tid)
920{
921 if (tid == IWL_MAX_TID_COUNT)
922 return IEEE80211_AC_VO; /* MGMT */
923
924 return tid_to_mac80211_ac[tid];
925}
926
927static void iwl_mvm_tx_deferred_stream(struct iwl_mvm *mvm,
928 struct ieee80211_sta *sta, int tid)
929{
930 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
931 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
932 struct sk_buff *skb;
933 struct ieee80211_hdr *hdr;
934 struct sk_buff_head deferred_tx;
935 u8 mac_queue;
936 bool no_queue = false; /* Marks if there is a problem with the queue */
937 u8 ac;
938
939 lockdep_assert_held(&mvm->mutex);
940
941 skb = skb_peek(&tid_data->deferred_tx_frames);
942 if (!skb)
943 return;
944 hdr = (void *)skb->data;
945
946 ac = iwl_mvm_tid_to_ac_queue(tid);
947 mac_queue = IEEE80211_SKB_CB(skb)->hw_queue;
948
949 if (tid_data->txq_id == IEEE80211_INVAL_HW_QUEUE &&
950 iwl_mvm_sta_alloc_queue(mvm, sta, ac, tid, hdr)) {
951 IWL_ERR(mvm,
952 "Can't alloc TXQ for sta %d tid %d - dropping frame\n",
953 mvmsta->sta_id, tid);
954
955 /*
956 * Mark queue as problematic so later the deferred traffic is
957 * freed, as we can do nothing with it
958 */
959 no_queue = true;
960 }
961
962 __skb_queue_head_init(&deferred_tx);
963
d2515a99
LK		 964 /* Disable bottom-halves when entering TX path */
965 local_bh_disable();
24afba76
LK		 966 spin_lock(&mvmsta->lock);
967 skb_queue_splice_init(&tid_data->deferred_tx_frames, &deferred_tx);
968 spin_unlock(&mvmsta->lock);
969
24afba76
LK		 970 while ((skb = __skb_dequeue(&deferred_tx)))
971 if (no_queue || iwl_mvm_tx_skb(mvm, skb, sta))
972 ieee80211_free_txskb(mvm->hw, skb);
973 local_bh_enable();
974
975 /* Wake queue */
976 iwl_mvm_start_mac_queues(mvm, BIT(mac_queue));
977}
978
979void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk)
980{
981 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm,
982 add_stream_wk);
983 struct ieee80211_sta *sta;
984 struct iwl_mvm_sta *mvmsta;
985 unsigned long deferred_tid_traffic;
9f9af3d7 986 int queue, sta_id, tid;
24afba76 987
9794c64f
LK		 988 /* Check inactivity of queues */
989 iwl_mvm_inactivity_check(mvm);
990
24afba76
LK		 991 mutex_lock(&mvm->mutex);
992
9f9af3d7
LK		 993 /* Reconfigure queues requiring reconfiguation */
994 for (queue = 0; queue < IWL_MAX_HW_QUEUES; queue++) {
995 bool reconfig;
996
997 spin_lock_bh(&mvm->queue_info_lock);
998 reconfig = (mvm->queue_info[queue].status ==
999 IWL_MVM_QUEUE_RECONFIGURING);
1000 spin_unlock_bh(&mvm->queue_info_lock);
1001
1002 if (reconfig)
1003 iwl_mvm_unshare_queue(mvm, queue);
1004 }
1005
24afba76
LK		 1006 /* Go over all stations with deferred traffic */
1007 for_each_set_bit(sta_id, mvm->sta_deferred_frames,
1008 IWL_MVM_STATION_COUNT) {
1009 clear_bit(sta_id, mvm->sta_deferred_frames);
1010 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1011 lockdep_is_held(&mvm->mutex));
1012 if (IS_ERR_OR_NULL(sta))
1013 continue;
1014
1015 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1016 deferred_tid_traffic = mvmsta->deferred_traffic_tid_map;
1017
1018 for_each_set_bit(tid, &deferred_tid_traffic,
1019 IWL_MAX_TID_COUNT + 1)
1020 iwl_mvm_tx_deferred_stream(mvm, sta, tid);
1021 }
1022
1023 mutex_unlock(&mvm->mutex);
1024}
1025
1026static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm,
d5216a28
LK		 1027 struct ieee80211_sta *sta,
1028 enum nl80211_iftype vif_type)
24afba76
LK		 1029{
1030 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1031 int queue;
1032
9794c64f
LK		 1033 /*
1034 * Check for inactive queues, so we don't reach a situation where we
1035 * can't add a STA due to a shortage in queues that doesn't really exist
1036 */
1037 iwl_mvm_inactivity_check(mvm);
1038
24afba76
LK		 1039 spin_lock_bh(&mvm->queue_info_lock);
1040
1041 /* Make sure we have free resources for this STA */
d5216a28
LK		 1042 if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls &&
1043 !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].hw_queue_refcount &&
cf961e16
LK		 1044 (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status ==
1045 IWL_MVM_QUEUE_FREE))
d5216a28
LK		 1046 queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE;
1047 else
9794c64f
LK		 1048 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id,
1049 IWL_MVM_DQA_MIN_DATA_QUEUE,
d5216a28 1050 IWL_MVM_DQA_MAX_DATA_QUEUE);
24afba76
LK		 1051 if (queue < 0) {
1052 spin_unlock_bh(&mvm->queue_info_lock);
1053 IWL_ERR(mvm, "No available queues for new station\n");
1054 return -ENOSPC;
1055 }
cf961e16 1056 mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED;
24afba76
LK		 1057
1058 spin_unlock_bh(&mvm->queue_info_lock);
1059
1060 mvmsta->reserved_queue = queue;
1061
1062 IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n",
1063 queue, mvmsta->sta_id);
1064
1065 return 0;
1066}
1067
8ca151b5
JB		 1068int iwl_mvm_add_sta(struct iwl_mvm *mvm,
1069 struct ieee80211_vif *vif,
1070 struct ieee80211_sta *sta)
1071{
1072 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
9d8ce6af 1073 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
a571f5f6 1074 struct iwl_mvm_rxq_dup_data *dup_data;
8ca151b5
JB		 1075 int i, ret, sta_id;
1076
1077 lockdep_assert_held(&mvm->mutex);
1078
1079 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
b92e661b
EP		 1080 sta_id = iwl_mvm_find_free_sta_id(mvm,
1081 ieee80211_vif_type_p2p(vif));
8ca151b5
JB		 1082 else
1083 sta_id = mvm_sta->sta_id;
1084
36f4631c 1085 if (sta_id == IWL_MVM_STATION_COUNT)
8ca151b5
JB		 1086 return -ENOSPC;
1087
1088 spin_lock_init(&mvm_sta->lock);
1089
1090 mvm_sta->sta_id = sta_id;
1091 mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id,
1092 mvmvif->color);
1093 mvm_sta->vif = vif;
1094 mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
9ee718aa
EL		 1095 mvm_sta->tx_protection = 0;
1096 mvm_sta->tt_tx_protection = false;
8ca151b5
JB		 1097
1098 /* HW restart, don't assume the memory has been zeroed */
e3d4bc8c 1099 atomic_set(&mvm->pending_frames[sta_id], 0);
69191afe 1100 mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */
8ca151b5 1101 mvm_sta->tfd_queue_msk = 0;
a0f6bf2a 1102
e3118ad7
LK		 1103 /*
1104 * Allocate new queues for a TDLS station, unless we're in DQA mode,
1105 * and then they'll be allocated dynamically
1106 */
1107 if (!iwl_mvm_is_dqa_supported(mvm) && sta->tdls) {
a0f6bf2a
AN		 1108 ret = iwl_mvm_tdls_sta_init(mvm, sta);
1109 if (ret)
1110 return ret;
24afba76 1111 } else if (!iwl_mvm_is_dqa_supported(mvm)) {
a0f6bf2a
AN		 1112 for (i = 0; i < IEEE80211_NUM_ACS; i++)
1113 if (vif->hw_queue[i] != IEEE80211_INVAL_HW_QUEUE)
1114 mvm_sta->tfd_queue_msk |= BIT(vif->hw_queue[i]);
1115 }
8ca151b5 1116
6d9d32b8 1117 /* for HW restart - reset everything but the sequence number */
24afba76 1118 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
6d9d32b8
JB		 1119 u16 seq = mvm_sta->tid_data[i].seq_number;
1120 memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i]));
1121 mvm_sta->tid_data[i].seq_number = seq;
24afba76
LK		 1122
1123 if (!iwl_mvm_is_dqa_supported(mvm))
1124 continue;
1125
1126 /*
1127 * Mark all queues for this STA as unallocated and defer TX
1128 * frames until the queue is allocated
1129 */
1130 mvm_sta->tid_data[i].txq_id = IEEE80211_INVAL_HW_QUEUE;
1131 skb_queue_head_init(&mvm_sta->tid_data[i].deferred_tx_frames);
6d9d32b8 1132 }
24afba76 1133 mvm_sta->deferred_traffic_tid_map = 0;
efed6640 1134 mvm_sta->agg_tids = 0;
8ca151b5 1135
a571f5f6
SS		 1136 if (iwl_mvm_has_new_rx_api(mvm) &&
1137 !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1138 dup_data = kcalloc(mvm->trans->num_rx_queues,
1139 sizeof(*dup_data),
1140 GFP_KERNEL);
1141 if (!dup_data)
1142 return -ENOMEM;
1143 mvm_sta->dup_data = dup_data;
1144 }
1145
24afba76 1146 if (iwl_mvm_is_dqa_supported(mvm)) {
d5216a28
LK		 1147 ret = iwl_mvm_reserve_sta_stream(mvm, sta,
1148 ieee80211_vif_type_p2p(vif));
24afba76
LK		 1149 if (ret)
1150 goto err;
1151 }
1152
1153 ret = iwl_mvm_sta_send_to_fw(mvm, sta, false, 0);
8ca151b5 1154 if (ret)
a0f6bf2a 1155 goto err;
8ca151b5 1156
9e848010
JB		 1157 if (vif->type == NL80211_IFTYPE_STATION) {
1158 if (!sta->tdls) {
1159 WARN_ON(mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT);
1160 mvmvif->ap_sta_id = sta_id;
1161 } else {
1162 WARN_ON(mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT);
1163 }
1164 }
8ca151b5
JB		 1165
1166 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta);
1167
1168 return 0;
a0f6bf2a
AN		 1169
1170err:
e3118ad7
LK		 1171 if (!iwl_mvm_is_dqa_supported(mvm) && sta->tdls)
1172 iwl_mvm_tdls_sta_deinit(mvm, sta);
a0f6bf2a 1173 return ret;
8ca151b5
JB		 1174}
1175
7a453973
JB		 1176int iwl_mvm_update_sta(struct iwl_mvm *mvm,
1177 struct ieee80211_vif *vif,
1178 struct ieee80211_sta *sta)
1179{
24afba76 1180 return iwl_mvm_sta_send_to_fw(mvm, sta, true, 0);
7a453973
JB		 1181}
1182
8ca151b5
JB		 1183int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta,
1184 bool drain)
1185{
f9dc0004 1186 struct iwl_mvm_add_sta_cmd cmd = {};
8ca151b5
JB		 1187 int ret;
1188 u32 status;
1189
1190 lockdep_assert_held(&mvm->mutex);
1191
1192 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color);
1193 cmd.sta_id = mvmsta->sta_id;
1194 cmd.add_modify = STA_MODE_MODIFY;
1195 cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0;
1196 cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW);
1197
1198 status = ADD_STA_SUCCESS;
854c5705
SS		 1199 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
1200 iwl_mvm_add_sta_cmd_size(mvm),
f9dc0004 1201 &cmd, &status);
8ca151b5
JB		 1202 if (ret)
1203 return ret;
1204
837c4da9 1205 switch (status & IWL_ADD_STA_STATUS_MASK) {
8ca151b5
JB		 1206 case ADD_STA_SUCCESS:
1207 IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n",
1208 mvmsta->sta_id);
1209 break;
1210 default:
1211 ret = -EIO;
1212 IWL_ERR(mvm, "Couldn't drain frames for staid %d\n",
1213 mvmsta->sta_id);
1214 break;
1215 }
1216
1217 return ret;
1218}
1219
1220/*
1221 * Remove a station from the FW table. Before sending the command to remove
1222 * the station validate that the station is indeed known to the driver (sanity
1223 * only).
1224 */
1225static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id)
1226{
1227 struct ieee80211_sta *sta;
1228 struct iwl_mvm_rm_sta_cmd rm_sta_cmd = {
1229 .sta_id = sta_id,
1230 };
1231 int ret;
1232
1233 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1234 lockdep_is_held(&mvm->mutex));
1235
1236 /* Note: internal stations are marked as error values */
1237 if (!sta) {
1238 IWL_ERR(mvm, "Invalid station id\n");
1239 return -EINVAL;
1240 }
1241
a1022927 1242 ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0,
8ca151b5
JB		 1243 sizeof(rm_sta_cmd), &rm_sta_cmd);
1244 if (ret) {
1245 IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id);
1246 return ret;
1247 }
1248
1249 return 0;
1250}
1251
1252void iwl_mvm_sta_drained_wk(struct work_struct *wk)
1253{
1254 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, sta_drained_wk);
1255 u8 sta_id;
1256
1257 /*
1258 * The mutex is needed because of the SYNC cmd, but not only: if the
1259 * work would run concurrently with iwl_mvm_rm_sta, it would run before
1260 * iwl_mvm_rm_sta sets the station as busy, and exit. Then
1261 * iwl_mvm_rm_sta would set the station as busy, and nobody will clean
1262 * that later.
1263 */
1264 mutex_lock(&mvm->mutex);
1265
1266 for_each_set_bit(sta_id, mvm->sta_drained, IWL_MVM_STATION_COUNT) {
1267 int ret;
1268 struct ieee80211_sta *sta =
1269 rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1270 lockdep_is_held(&mvm->mutex));
1271
1ddbbb0c
JB		 1272 /*
1273 * This station is in use or RCU-removed; the latter happens in
1274 * managed mode, where mac80211 removes the station before we
1275 * can remove it from firmware (we can only do that after the
1276 * MAC is marked unassociated), and possibly while the deauth
1277 * frame to disconnect from the AP is still queued. Then, the
1278 * station pointer is -ENOENT when the last skb is reclaimed.
1279 */
1280 if (!IS_ERR(sta) || PTR_ERR(sta) == -ENOENT)
8ca151b5
JB		 1281 continue;
1282
1283 if (PTR_ERR(sta) == -EINVAL) {
1284 IWL_ERR(mvm, "Drained sta %d, but it is internal?\n",
1285 sta_id);
1286 continue;
1287 }
1288
1289 if (!sta) {
1290 IWL_ERR(mvm, "Drained sta %d, but it was NULL?\n",
1291 sta_id);
1292 continue;
1293 }
1294
1295 WARN_ON(PTR_ERR(sta) != -EBUSY);
1296 /* This station was removed and we waited until it got drained,
1297 * we can now proceed and remove it.
1298 */
1299 ret = iwl_mvm_rm_sta_common(mvm, sta_id);
1300 if (ret) {
1301 IWL_ERR(mvm,
1302 "Couldn't remove sta %d after it was drained\n",
1303 sta_id);
1304 continue;
1305 }
c531c771 1306 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL);
8ca151b5 1307 clear_bit(sta_id, mvm->sta_drained);
a0f6bf2a
AN		 1308
1309 if (mvm->tfd_drained[sta_id]) {
1310 unsigned long i, msk = mvm->tfd_drained[sta_id];
1311
a4ca3ed4 1312 for_each_set_bit(i, &msk, sizeof(msk) * BITS_PER_BYTE)
06ecdba3
AN		 1313 iwl_mvm_disable_txq(mvm, i, i,
1314 IWL_MAX_TID_COUNT, 0);
a0f6bf2a
AN		 1315
1316 mvm->tfd_drained[sta_id] = 0;
1317 IWL_DEBUG_TDLS(mvm, "Drained sta %d, with queues %ld\n",
1318 sta_id, msk);
1319 }
8ca151b5
JB		 1320 }
1321
1322 mutex_unlock(&mvm->mutex);
1323}
1324
24afba76
LK		 1325static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm,
1326 struct ieee80211_vif *vif,
1327 struct iwl_mvm_sta *mvm_sta)
1328{
1329 int ac;
1330 int i;
1331
1332 lockdep_assert_held(&mvm->mutex);
1333
1334 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) {
1335 if (mvm_sta->tid_data[i].txq_id == IEEE80211_INVAL_HW_QUEUE)
1336 continue;
1337
1338 ac = iwl_mvm_tid_to_ac_queue(i);
1339 iwl_mvm_disable_txq(mvm, mvm_sta->tid_data[i].txq_id,
1340 vif->hw_queue[ac], i, 0);
1341 mvm_sta->tid_data[i].txq_id = IEEE80211_INVAL_HW_QUEUE;
1342 }
1343}
1344
8ca151b5
JB		 1345int iwl_mvm_rm_sta(struct iwl_mvm *mvm,
1346 struct ieee80211_vif *vif,
1347 struct ieee80211_sta *sta)
1348{
1349 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
9d8ce6af 1350 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
8ca151b5
JB		 1351 int ret;
1352
1353 lockdep_assert_held(&mvm->mutex);
1354
a571f5f6
SS		 1355 if (iwl_mvm_has_new_rx_api(mvm))
1356 kfree(mvm_sta->dup_data);
1357
a6f035a0
LK		 1358 if ((vif->type == NL80211_IFTYPE_STATION &&
1359 mvmvif->ap_sta_id == mvm_sta->sta_id) ||
1360 iwl_mvm_is_dqa_supported(mvm)){
fe92e32a
EG		 1361 ret = iwl_mvm_drain_sta(mvm, mvm_sta, true);
1362 if (ret)
1363 return ret;
80d85655 1364 /* flush its queues here since we are freeing mvm_sta */
5888a40c 1365 ret = iwl_mvm_flush_tx_path(mvm, mvm_sta->tfd_queue_msk, 0);
fe92e32a
EG		 1366 if (ret)
1367 return ret;
1368 ret = iwl_trans_wait_tx_queue_empty(mvm->trans,
1369 mvm_sta->tfd_queue_msk);
1370 if (ret)
1371 return ret;
1372 ret = iwl_mvm_drain_sta(mvm, mvm_sta, false);
80d85655 1373
24afba76
LK		 1374 /* If DQA is supported - the queues can be disabled now */
1375 if (iwl_mvm_is_dqa_supported(mvm))
1376 iwl_mvm_disable_sta_queues(mvm, vif, mvm_sta);
1377
e3118ad7
LK		 1378 if (vif->type == NL80211_IFTYPE_STATION &&
1379 mvmvif->ap_sta_id == mvm_sta->sta_id) {
1380 /* if associated - we can't remove the AP STA now */
1381 if (vif->bss_conf.assoc)
1382 return ret;
8ca151b5 1383
e3118ad7
LK		 1384 /* unassoc - go ahead - remove the AP STA now */
1385 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
37577fe2 1386
e3118ad7
LK		 1387 /* clear d0i3_ap_sta_id if no longer relevant */
1388 if (mvm->d0i3_ap_sta_id == mvm_sta->sta_id)
1389 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1390 }
8ca151b5
JB		 1391 }
1392
1d3c3f63
AN		 1393 /*
1394 * This shouldn't happen - the TDLS channel switch should be canceled
1395 * before the STA is removed.
1396 */
1397 if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == mvm_sta->sta_id)) {
1398 mvm->tdls_cs.peer.sta_id = IWL_MVM_STATION_COUNT;
1399 cancel_delayed_work(&mvm->tdls_cs.dwork);
1400 }
1401
e3d4bc8c
EG		 1402 /*
1403 * Make sure that the tx response code sees the station as -EBUSY and
1404 * calls the drain worker.
1405 */
1406 spin_lock_bh(&mvm_sta->lock);
8ca151b5
JB		 1407 /*
1408 * There are frames pending on the AC queues for this station.
1409 * We need to wait until all the frames are drained...
1410 */
e3d4bc8c 1411 if (atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) {
8ca151b5
JB		 1412 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
1413 ERR_PTR(-EBUSY));
e3d4bc8c 1414 spin_unlock_bh(&mvm_sta->lock);
a0f6bf2a
AN		 1415
1416 /* disable TDLS sta queues on drain complete */
1417 if (sta->tdls) {
1418 mvm->tfd_drained[mvm_sta->sta_id] =
1419 mvm_sta->tfd_queue_msk;
1420 IWL_DEBUG_TDLS(mvm, "Draining TDLS sta %d\n",
1421 mvm_sta->sta_id);
1422 }
1423
e3d4bc8c 1424 ret = iwl_mvm_drain_sta(mvm, mvm_sta, true);
8ca151b5 1425 } else {
e3d4bc8c 1426 spin_unlock_bh(&mvm_sta->lock);
a0f6bf2a 1427
e3118ad7 1428 if (!iwl_mvm_is_dqa_supported(mvm) && sta->tdls)
a0f6bf2a
AN		 1429 iwl_mvm_tdls_sta_deinit(mvm, sta);
1430
8ca151b5 1431 ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id);
c531c771 1432 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL);
8ca151b5
JB		 1433 }
1434
1435 return ret;
1436}
1437
1438int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm,
1439 struct ieee80211_vif *vif,
1440 u8 sta_id)
1441{
1442 int ret = iwl_mvm_rm_sta_common(mvm, sta_id);
1443
1444 lockdep_assert_held(&mvm->mutex);
1445
c531c771 1446 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL);
8ca151b5
JB		 1447 return ret;
1448}
1449
0e39eb03
CRI		 1450int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm,
1451 struct iwl_mvm_int_sta *sta,
1452 u32 qmask, enum nl80211_iftype iftype)
8ca151b5
JB		 1453{
1454 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
b92e661b 1455 sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype);
8ca151b5
JB		 1456 if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_STATION_COUNT))
1457 return -ENOSPC;
1458 }
1459
1460 sta->tfd_queue_msk = qmask;
1461
1462 /* put a non-NULL value so iterating over the stations won't stop */
1463 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL));
1464 return 0;
1465}
1466
712b24ad
JB		 1467static void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm,
1468 struct iwl_mvm_int_sta *sta)
8ca151b5 1469{
c531c771 1470 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL);
8ca151b5
JB		 1471 memset(sta, 0, sizeof(struct iwl_mvm_int_sta));
1472 sta->sta_id = IWL_MVM_STATION_COUNT;
1473}
1474
1475static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm,
1476 struct iwl_mvm_int_sta *sta,
1477 const u8 *addr,
1478 u16 mac_id, u16 color)
1479{
f9dc0004 1480 struct iwl_mvm_add_sta_cmd cmd;
8ca151b5
JB		 1481 int ret;
1482 u32 status;
1483
1484 lockdep_assert_held(&mvm->mutex);
1485
f9dc0004 1486 memset(&cmd, 0, sizeof(cmd));
8ca151b5
JB		 1487 cmd.sta_id = sta->sta_id;
1488 cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id,
1489 color));
1490
1491 cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk);
cf0cda19 1492 cmd.tid_disable_tx = cpu_to_le16(0xffff);
8ca151b5
JB		 1493
1494 if (addr)
1495 memcpy(cmd.addr, addr, ETH_ALEN);
1496
854c5705
SS		 1497 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
1498 iwl_mvm_add_sta_cmd_size(mvm),
f9dc0004 1499 &cmd, &status);
8ca151b5
JB		 1500 if (ret)
1501 return ret;
1502
837c4da9 1503 switch (status & IWL_ADD_STA_STATUS_MASK) {
8ca151b5
JB		 1504 case ADD_STA_SUCCESS:
1505 IWL_DEBUG_INFO(mvm, "Internal station added.\n");
1506 return 0;
1507 default:
1508 ret = -EIO;
1509 IWL_ERR(mvm, "Add internal station failed, status=0x%x\n",
1510 status);
1511 break;
1512 }
1513 return ret;
1514}
1515
1516int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm)
1517{
4cf677fd
EG		 1518 unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ?
1519 mvm->cfg->base_params->wd_timeout :
1520 IWL_WATCHDOG_DISABLED;
8ca151b5
JB		 1521 int ret;
1522
1523 lockdep_assert_held(&mvm->mutex);
1524
7da91b0e 1525 /* Map Aux queue to fifo - needs to happen before adding Aux station */
28d0793e
LK		 1526 if (!iwl_mvm_is_dqa_supported(mvm))
1527 iwl_mvm_enable_ac_txq(mvm, mvm->aux_queue, mvm->aux_queue,
1528 IWL_MVM_TX_FIFO_MCAST, 0, wdg_timeout);
7da91b0e
AM		 1529
1530 /* Allocate aux station and assign to it the aux queue */
1531 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue),
b92e661b 1532 NL80211_IFTYPE_UNSPECIFIED);
8ca151b5
JB		 1533 if (ret)
1534 return ret;
1535
28d0793e
LK		 1536 if (iwl_mvm_is_dqa_supported(mvm)) {
1537 struct iwl_trans_txq_scd_cfg cfg = {
1538 .fifo = IWL_MVM_TX_FIFO_MCAST,
1539 .sta_id = mvm->aux_sta.sta_id,
1540 .tid = IWL_MAX_TID_COUNT,
1541 .aggregate = false,
1542 .frame_limit = IWL_FRAME_LIMIT,
1543 };
1544
1545 iwl_mvm_enable_txq(mvm, mvm->aux_queue, mvm->aux_queue, 0, &cfg,
1546 wdg_timeout);
1547 }
1548
8ca151b5
JB		 1549 ret = iwl_mvm_add_int_sta_common(mvm, &mvm->aux_sta, NULL,
1550 MAC_INDEX_AUX, 0);
1551
1552 if (ret)
1553 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
1554 return ret;
1555}
1556
0e39eb03
CRI		 1557int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1558{
1559 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1560
1561 lockdep_assert_held(&mvm->mutex);
1562 return iwl_mvm_add_int_sta_common(mvm, &mvm->snif_sta, vif->addr,
1563 mvmvif->id, 0);
1564}
1565
1566int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1567{
1568 int ret;
1569
1570 lockdep_assert_held(&mvm->mutex);
1571
1572 ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id);
1573 if (ret)
1574 IWL_WARN(mvm, "Failed sending remove station\n");
1575
1576 return ret;
1577}
1578
1579void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm)
1580{
1581 iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta);
1582}
1583
712b24ad
JB		 1584void iwl_mvm_del_aux_sta(struct iwl_mvm *mvm)
1585{
1586 lockdep_assert_held(&mvm->mutex);
1587
1588 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
1589}
1590
8ca151b5
JB		 1591/*
1592 * Send the add station command for the vif's broadcast station.
1593 * Assumes that the station was already allocated.
1594 *
1595 * @mvm: the mvm component
1596 * @vif: the interface to which the broadcast station is added
1597 * @bsta: the broadcast station to add.
1598 */
013290aa 1599int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
8ca151b5
JB		 1600{
1601 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
013290aa 1602 struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta;
5023d966 1603 static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
a4243402 1604 const u8 *baddr = _baddr;
8ca151b5
JB		 1605
1606 lockdep_assert_held(&mvm->mutex);
1607
de24f638
LK		 1608 if (iwl_mvm_is_dqa_supported(mvm)) {
1609 struct iwl_trans_txq_scd_cfg cfg = {
1610 .fifo = IWL_MVM_TX_FIFO_VO,
1611 .sta_id = mvmvif->bcast_sta.sta_id,
1612 .tid = IWL_MAX_TID_COUNT,
1613 .aggregate = false,
1614 .frame_limit = IWL_FRAME_LIMIT,
1615 };
1616 unsigned int wdg_timeout =
1617 iwl_mvm_get_wd_timeout(mvm, vif, false, false);
1618 int queue;
1619
1620 if ((vif->type == NL80211_IFTYPE_AP) &&
1621 (mvmvif->bcast_sta.tfd_queue_msk &
1622 BIT(IWL_MVM_DQA_AP_PROBE_RESP_QUEUE)))
1623 queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE;
4c965139
LK		 1624 else if ((vif->type == NL80211_IFTYPE_P2P_DEVICE) &&
1625 (mvmvif->bcast_sta.tfd_queue_msk &
1626 BIT(IWL_MVM_DQA_P2P_DEVICE_QUEUE)))
1627 queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE;
de24f638
LK		 1628 else if (WARN(1, "Missed required TXQ for adding bcast STA\n"))
1629 return -EINVAL;
1630
1631 iwl_mvm_enable_txq(mvm, queue, vif->hw_queue[0], 0, &cfg,
1632 wdg_timeout);
1633 }
1634
5023d966
JB		 1635 if (vif->type == NL80211_IFTYPE_ADHOC)
1636 baddr = vif->bss_conf.bssid;
1637
8ca151b5
JB		 1638 if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_STATION_COUNT))
1639 return -ENOSPC;
1640
1641 return iwl_mvm_add_int_sta_common(mvm, bsta, baddr,
1642 mvmvif->id, mvmvif->color);
1643}
1644
1645/* Send the FW a request to remove the station from it's internal data
1646 * structures, but DO NOT remove the entry from the local data structures. */
013290aa 1647int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
8ca151b5 1648{
013290aa 1649 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
8ca151b5
JB		 1650 int ret;
1651
1652 lockdep_assert_held(&mvm->mutex);
1653
013290aa 1654 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id);
8ca151b5
JB		 1655 if (ret)
1656 IWL_WARN(mvm, "Failed sending remove station\n");
1657 return ret;
1658}
1659
013290aa
JB		 1660int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1661{
1662 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
de24f638 1663 u32 qmask = 0;
013290aa
JB		 1664
1665 lockdep_assert_held(&mvm->mutex);
1666
de24f638
LK		 1667 if (!iwl_mvm_is_dqa_supported(mvm))
1668 qmask = iwl_mvm_mac_get_queues_mask(vif);
013290aa 1669
de24f638
LK		 1670 if (vif->type == NL80211_IFTYPE_AP) {
1671 /*
1672 * The firmware defines the TFD queue mask to only be relevant
1673 * for *unicast* queues, so the multicast (CAB) queue shouldn't
1674 * be included.
1675 */
013290aa
JB		 1676 qmask &= ~BIT(vif->cab_queue);
1677
de24f638
LK		 1678 if (iwl_mvm_is_dqa_supported(mvm))
1679 qmask |= BIT(IWL_MVM_DQA_AP_PROBE_RESP_QUEUE);
4c965139
LK		 1680 } else if (iwl_mvm_is_dqa_supported(mvm) &&
1681 vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1682 qmask |= BIT(IWL_MVM_DQA_P2P_DEVICE_QUEUE);
de24f638
LK		 1683 }
1684
013290aa
JB		 1685 return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, qmask,
1686 ieee80211_vif_type_p2p(vif));
1687}
1688
8ca151b5
JB		 1689/* Allocate a new station entry for the broadcast station to the given vif,
1690 * and send it to the FW.
1691 * Note that each P2P mac should have its own broadcast station.
1692 *
1693 * @mvm: the mvm component
1694 * @vif: the interface to which the broadcast station is added
1695 * @bsta: the broadcast station to add. */
013290aa 1696int iwl_mvm_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
8ca151b5
JB		 1697{
1698 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
013290aa 1699 struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta;
8ca151b5
JB		 1700 int ret;
1701
1702 lockdep_assert_held(&mvm->mutex);
1703
013290aa 1704 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
8ca151b5
JB		 1705 if (ret)
1706 return ret;
1707
013290aa 1708 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
8ca151b5
JB		 1709
1710 if (ret)
1711 iwl_mvm_dealloc_int_sta(mvm, bsta);
013290aa 1712
8ca151b5
JB		 1713 return ret;
1714}
1715
013290aa
JB		 1716void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1717{
1718 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1719
1720 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta);
1721}
1722
8ca151b5
JB		 1723/*
1724 * Send the FW a request to remove the station from it's internal data
1725 * structures, and in addition remove it from the local data structure.
1726 */
013290aa 1727int iwl_mvm_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
8ca151b5
JB		 1728{
1729 int ret;
1730
1731 lockdep_assert_held(&mvm->mutex);
1732
013290aa
JB		 1733 ret = iwl_mvm_send_rm_bcast_sta(mvm, vif);
1734
1735 iwl_mvm_dealloc_bcast_sta(mvm, vif);
8ca151b5 1736
8ca151b5
JB		 1737 return ret;
1738}
1739
113a0447
EG		 1740#define IWL_MAX_RX_BA_SESSIONS 16
1741
b915c101 1742static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid)
10b2b201 1743{
b915c101
SS		 1744 struct iwl_mvm_delba_notif notif = {
1745 .metadata.type = IWL_MVM_RXQ_NOTIF_DEL_BA,
1746 .metadata.sync = 1,
1747 .delba.baid = baid,
10b2b201 1748 };
b915c101
SS		 1749 iwl_mvm_sync_rx_queues_internal(mvm, (void *)&notif, sizeof(notif));
1750};
10b2b201 1751
b915c101
SS		 1752static void iwl_mvm_free_reorder(struct iwl_mvm *mvm,
1753 struct iwl_mvm_baid_data *data)
1754{
1755 int i;
1756
1757 iwl_mvm_sync_rxq_del_ba(mvm, data->baid);
1758
1759 for (i = 0; i < mvm->trans->num_rx_queues; i++) {
1760 int j;
1761 struct iwl_mvm_reorder_buffer *reorder_buf =
1762 &data->reorder_buf[i];
1763
0690405f
SS		 1764 spin_lock_bh(&reorder_buf->lock);
1765 if (likely(!reorder_buf->num_stored)) {
1766 spin_unlock_bh(&reorder_buf->lock);
b915c101 1767 continue;
0690405f 1768 }
b915c101
SS		 1769
1770 /*
1771 * This shouldn't happen in regular DELBA since the internal
1772 * delBA notification should trigger a release of all frames in
1773 * the reorder buffer.
1774 */
1775 WARN_ON(1);
1776
1777 for (j = 0; j < reorder_buf->buf_size; j++)
1778 __skb_queue_purge(&reorder_buf->entries[j]);
0690405f
SS		 1779 /*
1780 * Prevent timer re-arm. This prevents a very far fetched case
1781 * where we timed out on the notification. There may be prior
1782 * RX frames pending in the RX queue before the notification
1783 * that might get processed between now and the actual deletion
1784 * and we would re-arm the timer although we are deleting the
1785 * reorder buffer.
1786 */
1787 reorder_buf->removed = true;
1788 spin_unlock_bh(&reorder_buf->lock);
1789 del_timer_sync(&reorder_buf->reorder_timer);
b915c101
SS		 1790 }
1791}
1792
1793static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm,
1794 u32 sta_id,
1795 struct iwl_mvm_baid_data *data,
1796 u16 ssn, u8 buf_size)
1797{
1798 int i;
1799
1800 for (i = 0; i < mvm->trans->num_rx_queues; i++) {
1801 struct iwl_mvm_reorder_buffer *reorder_buf =
1802 &data->reorder_buf[i];
1803 int j;
1804
1805 reorder_buf->num_stored = 0;
1806 reorder_buf->head_sn = ssn;
1807 reorder_buf->buf_size = buf_size;
0690405f
SS		 1808 /* rx reorder timer */
1809 reorder_buf->reorder_timer.function =
1810 iwl_mvm_reorder_timer_expired;
1811 reorder_buf->reorder_timer.data = (unsigned long)reorder_buf;
1812 init_timer(&reorder_buf->reorder_timer);
1813 spin_lock_init(&reorder_buf->lock);
1814 reorder_buf->mvm = mvm;
b915c101
SS		 1815 reorder_buf->queue = i;
1816 reorder_buf->sta_id = sta_id;
1817 for (j = 0; j < reorder_buf->buf_size; j++)
1818 __skb_queue_head_init(&reorder_buf->entries[j]);
1819 }
10b2b201
SS		 1820}
1821
8ca151b5 1822int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
10b2b201 1823 int tid, u16 ssn, bool start, u8 buf_size, u16 timeout)
8ca151b5 1824{
9d8ce6af 1825 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
f9dc0004 1826 struct iwl_mvm_add_sta_cmd cmd = {};
10b2b201 1827 struct iwl_mvm_baid_data *baid_data = NULL;
8ca151b5
JB		 1828 int ret;
1829 u32 status;
1830
1831 lockdep_assert_held(&mvm->mutex);
1832
113a0447
EG		 1833 if (start && mvm->rx_ba_sessions >= IWL_MAX_RX_BA_SESSIONS) {
1834 IWL_WARN(mvm, "Not enough RX BA SESSIONS\n");
1835 return -ENOSPC;
1836 }
1837
10b2b201
SS		 1838 if (iwl_mvm_has_new_rx_api(mvm) && start) {
1839 /*
1840 * Allocate here so if allocation fails we can bail out early
1841 * before starting the BA session in the firmware
1842 */
b915c101
SS		 1843 baid_data = kzalloc(sizeof(*baid_data) +
1844 mvm->trans->num_rx_queues *
1845 sizeof(baid_data->reorder_buf[0]),
1846 GFP_KERNEL);
10b2b201
SS		 1847 if (!baid_data)
1848 return -ENOMEM;
1849 }
1850
8ca151b5
JB		 1851 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color);
1852 cmd.sta_id = mvm_sta->sta_id;
1853 cmd.add_modify = STA_MODE_MODIFY;
93a42667
EG		 1854 if (start) {
1855 cmd.add_immediate_ba_tid = (u8) tid;
1856 cmd.add_immediate_ba_ssn = cpu_to_le16(ssn);
854c5705 1857 cmd.rx_ba_window = cpu_to_le16((u16)buf_size);
93a42667
EG		 1858 } else {
1859 cmd.remove_immediate_ba_tid = (u8) tid;
1860 }
8ca151b5
JB		 1861 cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID :
1862 STA_MODIFY_REMOVE_BA_TID;
1863
1864 status = ADD_STA_SUCCESS;
854c5705
SS		 1865 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
1866 iwl_mvm_add_sta_cmd_size(mvm),
f9dc0004 1867 &cmd, &status);
8ca151b5 1868 if (ret)
10b2b201 1869 goto out_free;
8ca151b5 1870
837c4da9 1871 switch (status & IWL_ADD_STA_STATUS_MASK) {
8ca151b5 1872 case ADD_STA_SUCCESS:
35263a03
SS		 1873 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n",
1874 start ? "start" : "stopp");
8ca151b5
JB		 1875 break;
1876 case ADD_STA_IMMEDIATE_BA_FAILURE:
1877 IWL_WARN(mvm, "RX BA Session refused by fw\n");
1878 ret = -ENOSPC;
1879 break;
1880 default:
1881 ret = -EIO;
1882 IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n",
1883 start ? "start" : "stopp", status);
1884 break;
1885 }
1886
10b2b201
SS		 1887 if (ret)
1888 goto out_free;
1889
1890 if (start) {
1891 u8 baid;
1892
1893 mvm->rx_ba_sessions++;
1894
1895 if (!iwl_mvm_has_new_rx_api(mvm))
1896 return 0;
1897
1898 if (WARN_ON(!(status & IWL_ADD_STA_BAID_VALID_MASK))) {
1899 ret = -EINVAL;
1900 goto out_free;
1901 }
1902 baid = (u8)((status & IWL_ADD_STA_BAID_MASK) >>
1903 IWL_ADD_STA_BAID_SHIFT);
1904 baid_data->baid = baid;
1905 baid_data->timeout = timeout;
1906 baid_data->last_rx = jiffies;
1907 init_timer(&baid_data->session_timer);
1908 baid_data->session_timer.function =
1909 iwl_mvm_rx_agg_session_expired;
1910 baid_data->session_timer.data =
1911 (unsigned long)&mvm->baid_map[baid];
1912 baid_data->mvm = mvm;
1913 baid_data->tid = tid;
1914 baid_data->sta_id = mvm_sta->sta_id;
1915
1916 mvm_sta->tid_to_baid[tid] = baid;
1917 if (timeout)
1918 mod_timer(&baid_data->session_timer,
1919 TU_TO_EXP_TIME(timeout * 2));
1920
b915c101
SS		 1921 iwl_mvm_init_reorder_buffer(mvm, mvm_sta->sta_id,
1922 baid_data, ssn, buf_size);
10b2b201
SS		 1923 /*
1924 * protect the BA data with RCU to cover a case where our
1925 * internal RX sync mechanism will timeout (not that it's
1926 * supposed to happen) and we will free the session data while
1927 * RX is being processed in parallel
1928 */
35263a03
SS		 1929 IWL_DEBUG_HT(mvm, "Sta %d(%d) is assigned to BAID %d\n",
1930 mvm_sta->sta_id, tid, baid);
10b2b201
SS		 1931 WARN_ON(rcu_access_pointer(mvm->baid_map[baid]));
1932 rcu_assign_pointer(mvm->baid_map[baid], baid_data);
60dec523 1933 } else {
10b2b201
SS		 1934 u8 baid = mvm_sta->tid_to_baid[tid];
1935
60dec523
SS		 1936 if (mvm->rx_ba_sessions > 0)
1937 /* check that restart flow didn't zero the counter */
1938 mvm->rx_ba_sessions--;
10b2b201
SS		 1939 if (!iwl_mvm_has_new_rx_api(mvm))
1940 return 0;
1941
1942 if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID))
1943 return -EINVAL;
1944
1945 baid_data = rcu_access_pointer(mvm->baid_map[baid]);
1946 if (WARN_ON(!baid_data))
1947 return -EINVAL;
1948
1949 /* synchronize all rx queues so we can safely delete */
b915c101 1950 iwl_mvm_free_reorder(mvm, baid_data);
10b2b201 1951 del_timer_sync(&baid_data->session_timer);
10b2b201
SS		 1952 RCU_INIT_POINTER(mvm->baid_map[baid], NULL);
1953 kfree_rcu(baid_data, rcu_head);
35263a03 1954 IWL_DEBUG_HT(mvm, "BAID %d is free\n", baid);
113a0447 1955 }
10b2b201 1956 return 0;
113a0447 1957
10b2b201
SS		 1958out_free:
1959 kfree(baid_data);
8ca151b5
JB		 1960 return ret;
1961}
1962
9794c64f
LK		 1963int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
1964 int tid, u8 queue, bool start)
8ca151b5 1965{
9d8ce6af 1966 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
f9dc0004 1967 struct iwl_mvm_add_sta_cmd cmd = {};
8ca151b5
JB		 1968 int ret;
1969 u32 status;
1970
1971 lockdep_assert_held(&mvm->mutex);
1972
1973 if (start) {
1974 mvm_sta->tfd_queue_msk |= BIT(queue);
1975 mvm_sta->tid_disable_agg &= ~BIT(tid);
1976 } else {
cf961e16
LK		 1977 /* In DQA-mode the queue isn't removed on agg termination */
1978 if (!iwl_mvm_is_dqa_supported(mvm))
1979 mvm_sta->tfd_queue_msk &= ~BIT(queue);
8ca151b5
JB		 1980 mvm_sta->tid_disable_agg |= BIT(tid);
1981 }
1982
1983 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color);
1984 cmd.sta_id = mvm_sta->sta_id;
1985 cmd.add_modify = STA_MODE_MODIFY;
1986 cmd.modify_mask = STA_MODIFY_QUEUES | STA_MODIFY_TID_DISABLE_TX;
1987 cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk);
1988 cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg);
1989
1990 status = ADD_STA_SUCCESS;
854c5705
SS		 1991 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
1992 iwl_mvm_add_sta_cmd_size(mvm),
f9dc0004 1993 &cmd, &status);
8ca151b5
JB		 1994 if (ret)
1995 return ret;
1996
837c4da9 1997 switch (status & IWL_ADD_STA_STATUS_MASK) {
8ca151b5
JB		 1998 case ADD_STA_SUCCESS:
1999 break;
2000 default:
2001 ret = -EIO;
2002 IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n",
2003 start ? "start" : "stopp", status);
2004 break;
2005 }
2006
2007 return ret;
2008}
2009
b797e3fb 2010const u8 tid_to_mac80211_ac[] = {
8ca151b5
JB		 2011 IEEE80211_AC_BE,
2012 IEEE80211_AC_BK,
2013 IEEE80211_AC_BK,
2014 IEEE80211_AC_BE,
2015 IEEE80211_AC_VI,
2016 IEEE80211_AC_VI,
2017 IEEE80211_AC_VO,
2018 IEEE80211_AC_VO,
9794c64f 2019 IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */
8ca151b5
JB		 2020};
2021
3e56eadf
JB		 2022static const u8 tid_to_ucode_ac[] = {
2023 AC_BE,
2024 AC_BK,
2025 AC_BK,
2026 AC_BE,
2027 AC_VI,
2028 AC_VI,
2029 AC_VO,
2030 AC_VO,
2031};
2032
8ca151b5
JB		 2033int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2034 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
2035{
5b577a90 2036 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
8ca151b5
JB		 2037 struct iwl_mvm_tid_data *tid_data;
2038 int txq_id;
4ecafae9 2039 int ret;
8ca151b5
JB		 2040
2041 if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT))
2042 return -EINVAL;
2043
2044 if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) {
2045 IWL_ERR(mvm, "Start AGG when state is not IWL_AGG_OFF %d!\n",
2046 mvmsta->tid_data[tid].state);
2047 return -ENXIO;
2048 }
2049
2050 lockdep_assert_held(&mvm->mutex);
2051
b2492501
AN		 2052 spin_lock_bh(&mvmsta->lock);
2053
2054 /* possible race condition - we entered D0i3 while starting agg */
2055 if (test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) {
2056 spin_unlock_bh(&mvmsta->lock);
2057 IWL_ERR(mvm, "Entered D0i3 while starting Tx agg\n");
2058 return -EIO;
2059 }
2060
9f9af3d7 2061 spin_lock(&mvm->queue_info_lock);
4ecafae9 2062
cf961e16
LK		 2063 /*
2064 * Note the possible cases:
2065 * 1. In DQA mode with an enabled TXQ - TXQ needs to become agg'ed
2066 * 2. Non-DQA mode: the TXQ hasn't yet been enabled, so find a free
2067 * one and mark it as reserved
2068 * 3. In DQA mode, but no traffic yet on this TID: same treatment as in
2069 * non-DQA mode, since the TXQ hasn't yet been allocated
2070 */
2071 txq_id = mvmsta->tid_data[tid].txq_id;
9f9af3d7
LK		 2072 if (iwl_mvm_is_dqa_supported(mvm) &&
2073 unlikely(mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_SHARED)) {
2074 ret = -ENXIO;
2075 IWL_DEBUG_TX_QUEUES(mvm,
2076 "Can't start tid %d agg on shared queue!\n",
2077 tid);
2078 goto release_locks;
2079 } else if (!iwl_mvm_is_dqa_supported(mvm) ||
cf961e16 2080 mvm->queue_info[txq_id].status != IWL_MVM_QUEUE_READY) {
9794c64f
LK		 2081 txq_id = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id,
2082 mvm->first_agg_queue,
cf961e16
LK		 2083 mvm->last_agg_queue);
2084 if (txq_id < 0) {
2085 ret = txq_id;
cf961e16
LK		 2086 IWL_ERR(mvm, "Failed to allocate agg queue\n");
2087 goto release_locks;
2088 }
2089
2090 /* TXQ hasn't yet been enabled, so mark it only as reserved */
2091 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED;
4ecafae9 2092 }
9f9af3d7
LK		 2093
2094 spin_unlock(&mvm->queue_info_lock);
8ca151b5 2095
cf961e16
LK		 2096 IWL_DEBUG_TX_QUEUES(mvm,
2097 "AGG for tid %d will be on queue #%d\n",
2098 tid, txq_id);
2099
8ca151b5 2100 tid_data = &mvmsta->tid_data[tid];
9a886586 2101 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
8ca151b5
JB		 2102 tid_data->txq_id = txq_id;
2103 *ssn = tid_data->ssn;
2104
2105 IWL_DEBUG_TX_QUEUES(mvm,
2106 "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n",
2107 mvmsta->sta_id, tid, txq_id, tid_data->ssn,
2108 tid_data->next_reclaimed);
2109
2110 if (tid_data->ssn == tid_data->next_reclaimed) {
2111 tid_data->state = IWL_AGG_STARTING;
2112 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
2113 } else {
2114 tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA;
2115 }
2116
4ecafae9 2117 ret = 0;
9f9af3d7 2118 goto out;
4ecafae9
LK		 2119
2120release_locks:
9f9af3d7
LK		 2121 spin_unlock(&mvm->queue_info_lock);
2122out:
8ca151b5
JB		 2123 spin_unlock_bh(&mvmsta->lock);
2124
4ecafae9 2125 return ret;
8ca151b5
JB		 2126}
2127
2128int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
bb81bb68
EG		 2129 struct ieee80211_sta *sta, u16 tid, u8 buf_size,
2130 bool amsdu)
8ca151b5 2131{
5b577a90 2132 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
8ca151b5 2133 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
5d42e7b2
EG		 2134 unsigned int wdg_timeout =
2135 iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false);
eea76c36 2136 int queue, ret;
cf961e16 2137 bool alloc_queue = true;
9f9af3d7 2138 enum iwl_mvm_queue_status queue_status;
8ca151b5
JB		 2139 u16 ssn;
2140
eea76c36
EG		 2141 struct iwl_trans_txq_scd_cfg cfg = {
2142 .sta_id = mvmsta->sta_id,
2143 .tid = tid,
2144 .frame_limit = buf_size,
2145 .aggregate = true,
2146 };
2147
efed6640
ES		 2148 BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE)
2149 != IWL_MAX_TID_COUNT);
2150
8ca151b5
JB		 2151 buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF);
2152
2153 spin_lock_bh(&mvmsta->lock);
2154 ssn = tid_data->ssn;
2155 queue = tid_data->txq_id;
2156 tid_data->state = IWL_AGG_ON;
efed6640 2157 mvmsta->agg_tids |= BIT(tid);
8ca151b5 2158 tid_data->ssn = 0xffff;
bb81bb68 2159 tid_data->amsdu_in_ampdu_allowed = amsdu;
8ca151b5
JB		 2160 spin_unlock_bh(&mvmsta->lock);
2161
eea76c36 2162 cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]];
8ca151b5 2163
9f9af3d7
LK		 2164 spin_lock_bh(&mvm->queue_info_lock);
2165 queue_status = mvm->queue_info[queue].status;
2166 spin_unlock_bh(&mvm->queue_info_lock);
2167
cf961e16
LK		 2168 /* In DQA mode, the existing queue might need to be reconfigured */
2169 if (iwl_mvm_is_dqa_supported(mvm)) {
cf961e16
LK		 2170 /* Maybe there is no need to even alloc a queue... */
2171 if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY)
2172 alloc_queue = false;
cf961e16
LK		 2173
2174 /*
2175 * Only reconfig the SCD for the queue if the window size has
2176 * changed from current (become smaller)
2177 */
2178 if (!alloc_queue && buf_size < mvmsta->max_agg_bufsize) {
2179 /*
2180 * If reconfiguring an existing queue, it first must be
2181 * drained
2182 */
2183 ret = iwl_trans_wait_tx_queue_empty(mvm->trans,
2184 BIT(queue));
2185 if (ret) {
2186 IWL_ERR(mvm,
2187 "Error draining queue before reconfig\n");
2188 return ret;
2189 }
2190
2191 ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo,
2192 mvmsta->sta_id, tid,
2193 buf_size, ssn);
2194 if (ret) {
2195 IWL_ERR(mvm,
2196 "Error reconfiguring TXQ #%d\n", queue);
2197 return ret;
2198 }
2199 }
2200 }
2201
2202 if (alloc_queue)
2203 iwl_mvm_enable_txq(mvm, queue,
2204 vif->hw_queue[tid_to_mac80211_ac[tid]], ssn,
2205 &cfg, wdg_timeout);
fa7878e7 2206
9f9af3d7
LK		 2207 /* Send ADD_STA command to enable aggs only if the queue isn't shared */
2208 if (queue_status != IWL_MVM_QUEUE_SHARED) {
2209 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);
2210 if (ret)
2211 return -EIO;
2212 }
8ca151b5 2213
4ecafae9
LK		 2214 /* No need to mark as reserved */
2215 spin_lock_bh(&mvm->queue_info_lock);
cf961e16 2216 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY;
4ecafae9
LK		 2217 spin_unlock_bh(&mvm->queue_info_lock);
2218
8ca151b5
JB		 2219 /*
2220 * Even though in theory the peer could have different
2221 * aggregation reorder buffer sizes for different sessions,
2222 * our ucode doesn't allow for that and has a global limit
2223 * for each station. Therefore, use the minimum of all the
2224 * aggregation sessions and our default value.
2225 */
2226 mvmsta->max_agg_bufsize =
2227 min(mvmsta->max_agg_bufsize, buf_size);
2228 mvmsta->lq_sta.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize;
2229
9ee718aa
EL		 2230 IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n",
2231 sta->addr, tid);
2232
9e680946 2233 return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.lq, false);
8ca151b5
JB		 2234}
2235
2236int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2237 struct ieee80211_sta *sta, u16 tid)
2238{
5b577a90 2239 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
8ca151b5
JB		 2240 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2241 u16 txq_id;
2242 int err;
2243
f9aa8dd3
EG		 2244 /*
2245 * If mac80211 is cleaning its state, then say that we finished since
2246 * our state has been cleared anyway.
2247 */
2248 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
2249 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
2250 return 0;
2251 }
2252
8ca151b5
JB		 2253 spin_lock_bh(&mvmsta->lock);
2254
2255 txq_id = tid_data->txq_id;
2256
2257 IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n",
2258 mvmsta->sta_id, tid, txq_id, tid_data->state);
2259
efed6640
ES		 2260 mvmsta->agg_tids &= ~BIT(tid);
2261
4ecafae9 2262 spin_lock_bh(&mvm->queue_info_lock);
cf961e16
LK		 2263 /*
2264 * The TXQ is marked as reserved only if no traffic came through yet
2265 * This means no traffic has been sent on this TID (agg'd or not), so
2266 * we no longer have use for the queue. Since it hasn't even been
2267 * allocated through iwl_mvm_enable_txq, so we can just mark it back as
2268 * free.
2269 */
2270 if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED)
2271 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE;
9f9af3d7 2272
4ecafae9
LK		 2273 spin_unlock_bh(&mvm->queue_info_lock);
2274
8ca151b5
JB		 2275 switch (tid_data->state) {
2276 case IWL_AGG_ON:
9a886586 2277 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
8ca151b5
JB		 2278
2279 IWL_DEBUG_TX_QUEUES(mvm,
2280 "ssn = %d, next_recl = %d\n",
2281 tid_data->ssn, tid_data->next_reclaimed);
2282
2283 /* There are still packets for this RA / TID in the HW */
2284 if (tid_data->ssn != tid_data->next_reclaimed) {
2285 tid_data->state = IWL_EMPTYING_HW_QUEUE_DELBA;
2286 err = 0;
2287 break;
2288 }
2289
2290 tid_data->ssn = 0xffff;
f7f89e7b 2291 tid_data->state = IWL_AGG_OFF;
f7f89e7b
JB		 2292 spin_unlock_bh(&mvmsta->lock);
2293
2294 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
2295
2296 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false);
2297
cf961e16
LK		 2298 if (!iwl_mvm_is_dqa_supported(mvm)) {
2299 int mac_queue = vif->hw_queue[tid_to_mac80211_ac[tid]];
2300
2301 iwl_mvm_disable_txq(mvm, txq_id, mac_queue, tid, 0);
2302 }
f7f89e7b 2303 return 0;
8ca151b5
JB		 2304 case IWL_AGG_STARTING:
2305 case IWL_EMPTYING_HW_QUEUE_ADDBA:
2306 /*
2307 * The agg session has been stopped before it was set up. This
2308 * can happen when the AddBA timer times out for example.
2309 */
2310
2311 /* No barriers since we are under mutex */
2312 lockdep_assert_held(&mvm->mutex);
8ca151b5
JB		 2313
2314 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
2315 tid_data->state = IWL_AGG_OFF;
2316 err = 0;
2317 break;
2318 default:
2319 IWL_ERR(mvm,
2320 "Stopping AGG while state not ON or starting for %d on %d (%d)\n",
2321 mvmsta->sta_id, tid, tid_data->state);
2322 IWL_ERR(mvm,
2323 "\ttid_data->txq_id = %d\n", tid_data->txq_id);
2324 err = -EINVAL;
2325 }
2326
2327 spin_unlock_bh(&mvmsta->lock);
2328
2329 return err;
2330}
2331
e3d9e7ce
EG		 2332int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2333 struct ieee80211_sta *sta, u16 tid)
2334{
5b577a90 2335 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
e3d9e7ce
EG		 2336 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2337 u16 txq_id;
b6658ff8 2338 enum iwl_mvm_agg_state old_state;
e3d9e7ce
EG		 2339
2340 /*
2341 * First set the agg state to OFF to avoid calling
2342 * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty.
2343 */
2344 spin_lock_bh(&mvmsta->lock);
2345 txq_id = tid_data->txq_id;
2346 IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n",
2347 mvmsta->sta_id, tid, txq_id, tid_data->state);
b6658ff8 2348 old_state = tid_data->state;
e3d9e7ce 2349 tid_data->state = IWL_AGG_OFF;
efed6640 2350 mvmsta->agg_tids &= ~BIT(tid);
e3d9e7ce
EG		 2351 spin_unlock_bh(&mvmsta->lock);
2352
4ecafae9 2353 spin_lock_bh(&mvm->queue_info_lock);
cf961e16
LK		 2354 /*
2355 * The TXQ is marked as reserved only if no traffic came through yet
2356 * This means no traffic has been sent on this TID (agg'd or not), so
2357 * we no longer have use for the queue. Since it hasn't even been
2358 * allocated through iwl_mvm_enable_txq, so we can just mark it back as
2359 * free.
2360 */
2361 if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED)
2362 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE;
4ecafae9
LK		 2363 spin_unlock_bh(&mvm->queue_info_lock);
2364
b6658ff8 2365 if (old_state >= IWL_AGG_ON) {
fe92e32a 2366 iwl_mvm_drain_sta(mvm, mvmsta, true);
5888a40c 2367 if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id), 0))
b6658ff8 2368 IWL_ERR(mvm, "Couldn't flush the AGG queue\n");
fe92e32a
EG		 2369 iwl_trans_wait_tx_queue_empty(mvm->trans,
2370 mvmsta->tfd_queue_msk);
2371 iwl_mvm_drain_sta(mvm, mvmsta, false);
b6658ff8 2372
f7f89e7b
JB		 2373 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false);
2374
cf961e16
LK		 2375 if (!iwl_mvm_is_dqa_supported(mvm)) {
2376 int mac_queue = vif->hw_queue[tid_to_mac80211_ac[tid]];
2377
2378 iwl_mvm_disable_txq(mvm, tid_data->txq_id, mac_queue,
2379 tid, 0);
2380 }
b6658ff8 2381 }
e3d9e7ce 2382
e3d9e7ce
EG		 2383 return 0;
2384}
2385
8ca151b5
JB		 2386static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm)
2387{
2dc2a15e 2388 int i, max = -1, max_offs = -1;
8ca151b5
JB		 2389
2390 lockdep_assert_held(&mvm->mutex);
2391
2dc2a15e
JB		 2392 /* Pick the unused key offset with the highest 'deleted'
2393 * counter. Every time a key is deleted, all the counters
2394 * are incremented and the one that was just deleted is
2395 * reset to zero. Thus, the highest counter is the one
2396 * that was deleted longest ago. Pick that one.
2397 */
2398 for (i = 0; i < STA_KEY_MAX_NUM; i++) {
2399 if (test_bit(i, mvm->fw_key_table))
2400 continue;
2401 if (mvm->fw_key_deleted[i] > max) {
2402 max = mvm->fw_key_deleted[i];
2403 max_offs = i;
2404 }
2405 }
8ca151b5 2406
2dc2a15e 2407 if (max_offs < 0)
8ca151b5
JB		 2408 return STA_KEY_IDX_INVALID;
2409
2dc2a15e 2410 return max_offs;
8ca151b5
JB		 2411}
2412
5f7a1847
JB		 2413static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm,
2414 struct ieee80211_vif *vif,
2415 struct ieee80211_sta *sta)
8ca151b5 2416{
5b530e95 2417 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
8ca151b5 2418
5f7a1847
JB		 2419 if (sta)
2420 return iwl_mvm_sta_from_mac80211(sta);
8ca151b5
JB		 2421
2422 /*
2423 * The device expects GTKs for station interfaces to be
2424 * installed as GTKs for the AP station. If we have no
2425 * station ID, then use AP's station ID.
2426 */
2427 if (vif->type == NL80211_IFTYPE_STATION &&
9513c5e1
AA		 2428 mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
2429 u8 sta_id = mvmvif->ap_sta_id;
2430
7d6a1ab6
EG		 2431 sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id],
2432 lockdep_is_held(&mvm->mutex));
2433
9513c5e1
AA		 2434 /*
2435 * It is possible that the 'sta' parameter is NULL,
2436 * for example when a GTK is removed - the sta_id will then
2437 * be the AP ID, and no station was passed by mac80211.
2438 */
7d6a1ab6
EG		 2439 if (IS_ERR_OR_NULL(sta))
2440 return NULL;
2441
2442 return iwl_mvm_sta_from_mac80211(sta);
9513c5e1 2443 }
8ca151b5 2444
5f7a1847 2445 return NULL;
8ca151b5
JB		 2446}
2447
2448static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm,
2449 struct iwl_mvm_sta *mvm_sta,
ba3943b0 2450 struct ieee80211_key_conf *keyconf, bool mcast,
d6ee54a9
LC		 2451 u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags,
2452 u8 key_offset)
8ca151b5 2453{
5a258aae 2454 struct iwl_mvm_add_sta_key_cmd cmd = {};
f9dc0004 2455 __le16 key_flags;
79920749
JB		 2456 int ret;
2457 u32 status;
8ca151b5
JB		 2458 u16 keyidx;
2459 int i;
2f6319d1 2460 u8 sta_id = mvm_sta->sta_id;
8ca151b5
JB		 2461
2462 keyidx = (keyconf->keyidx << STA_KEY_FLG_KEYID_POS) &
2463 STA_KEY_FLG_KEYID_MSK;
2464 key_flags = cpu_to_le16(keyidx);
2465 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP);
2466
2467 switch (keyconf->cipher) {
2468 case WLAN_CIPHER_SUITE_TKIP:
2469 key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP);
5a258aae 2470 cmd.tkip_rx_tsc_byte2 = tkip_iv32;
8ca151b5 2471 for (i = 0; i < 5; i++)
5a258aae
MS		 2472 cmd.tkip_rx_ttak[i] = cpu_to_le16(tkip_p1k[i]);
2473 memcpy(cmd.key, keyconf->key, keyconf->keylen);
8ca151b5
JB		 2474 break;
2475 case WLAN_CIPHER_SUITE_CCMP:
2476 key_flags |= cpu_to_le16(STA_KEY_FLG_CCM);
5a258aae 2477 memcpy(cmd.key, keyconf->key, keyconf->keylen);
8ca151b5 2478 break;
ba3943b0
JB		 2479 case WLAN_CIPHER_SUITE_WEP104:
2480 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES);
aa0cb08b 2481 /* fall through */
ba3943b0
JB		 2482 case WLAN_CIPHER_SUITE_WEP40:
2483 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP);
2484 memcpy(cmd.key + 3, keyconf->key, keyconf->keylen);
2485 break;
2a53d166
AB		 2486 case WLAN_CIPHER_SUITE_GCMP_256:
2487 key_flags |= cpu_to_le16(STA_KEY_FLG_KEY_32BYTES);
2488 /* fall through */
2489 case WLAN_CIPHER_SUITE_GCMP:
2490 key_flags |= cpu_to_le16(STA_KEY_FLG_GCMP);
2491 memcpy(cmd.key, keyconf->key, keyconf->keylen);
2492 break;
8ca151b5 2493 default:
e36e5433
MS		 2494 key_flags |= cpu_to_le16(STA_KEY_FLG_EXT);
2495 memcpy(cmd.key, keyconf->key, keyconf->keylen);
8ca151b5
JB		 2496 }
2497
ba3943b0 2498 if (mcast)
8ca151b5
JB		 2499 key_flags |= cpu_to_le16(STA_KEY_MULTICAST);
2500
d6ee54a9 2501 cmd.key_offset = key_offset;
5a258aae 2502 cmd.key_flags = key_flags;
8ca151b5
JB		 2503 cmd.sta_id = sta_id;
2504
2505 status = ADD_STA_SUCCESS;
a1022927 2506 if (cmd_flags & CMD_ASYNC)
f9dc0004
EG		 2507 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC,
2508 sizeof(cmd), &cmd);
a1022927
EG		 2509 else
2510 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd),
2511 &cmd, &status);
8ca151b5
JB		 2512
2513 switch (status) {
2514 case ADD_STA_SUCCESS:
2515 IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n");
2516 break;
2517 default:
2518 ret = -EIO;
2519 IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n");
2520 break;
2521 }
2522
2523 return ret;
2524}
2525
2526static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm,
2527 struct ieee80211_key_conf *keyconf,
2528 u8 sta_id, bool remove_key)
2529{
2530 struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {};
2531
2532 /* verify the key details match the required command's expectations */
8e160ab8
AB		 2533 if (WARN_ON((keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) ||
2534 (keyconf->keyidx != 4 && keyconf->keyidx != 5) ||
2535 (keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC &&
2536 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_128 &&
2537 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_256)))
2538 return -EINVAL;
2539
2540 if (WARN_ON(!iwl_mvm_has_new_rx_api(mvm) &&
2541 keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC))
8ca151b5
JB		 2542 return -EINVAL;
2543
2544 igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx);
2545 igtk_cmd.sta_id = cpu_to_le32(sta_id);
2546
2547 if (remove_key) {
2548 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID);
2549 } else {
2550 struct ieee80211_key_seq seq;
2551 const u8 *pn;
2552
aa950524
AB		 2553 switch (keyconf->cipher) {
2554 case WLAN_CIPHER_SUITE_AES_CMAC:
2555 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM);
2556 break;
8e160ab8
AB		 2557 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
2558 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
2559 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_GCMP);
2560 break;
aa950524
AB		 2561 default:
2562 return -EINVAL;
2563 }
2564
8e160ab8
AB		 2565 memcpy(igtk_cmd.igtk, keyconf->key, keyconf->keylen);
2566 if (keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
2567 igtk_cmd.ctrl_flags |=
2568 cpu_to_le32(STA_KEY_FLG_KEY_32BYTES);
8ca151b5
JB		 2569 ieee80211_get_key_rx_seq(keyconf, 0, &seq);
2570 pn = seq.aes_cmac.pn;
2571 igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) |
2572 ((u64) pn[4] << 8) |
2573 ((u64) pn[3] << 16) |
2574 ((u64) pn[2] << 24) |
2575 ((u64) pn[1] << 32) |
2576 ((u64) pn[0] << 40));
2577 }
2578
2579 IWL_DEBUG_INFO(mvm, "%s igtk for sta %u\n",
2580 remove_key ? "removing" : "installing",
2581 igtk_cmd.sta_id);
2582
8e160ab8
AB		 2583 if (!iwl_mvm_has_new_rx_api(mvm)) {
2584 struct iwl_mvm_mgmt_mcast_key_cmd_v1 igtk_cmd_v1 = {
2585 .ctrl_flags = igtk_cmd.ctrl_flags,
2586 .key_id = igtk_cmd.key_id,
2587 .sta_id = igtk_cmd.sta_id,
2588 .receive_seq_cnt = igtk_cmd.receive_seq_cnt
2589 };
2590
2591 memcpy(igtk_cmd_v1.igtk, igtk_cmd.igtk,
2592 ARRAY_SIZE(igtk_cmd_v1.igtk));
2593 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0,
2594 sizeof(igtk_cmd_v1), &igtk_cmd_v1);
2595 }
a1022927 2596 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0,
8ca151b5
JB		 2597 sizeof(igtk_cmd), &igtk_cmd);
2598}
2599
2600
2601static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm,
2602 struct ieee80211_vif *vif,
2603 struct ieee80211_sta *sta)
2604{
5b530e95 2605 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
8ca151b5
JB		 2606
2607 if (sta)
2608 return sta->addr;
2609
2610 if (vif->type == NL80211_IFTYPE_STATION &&
2611 mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
2612 u8 sta_id = mvmvif->ap_sta_id;
2613 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
2614 lockdep_is_held(&mvm->mutex));
2615 return sta->addr;
2616 }
2617
2618
2619 return NULL;
2620}
2621
2f6319d1
JB		 2622static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm,
2623 struct ieee80211_vif *vif,
2624 struct ieee80211_sta *sta,
ba3943b0 2625 struct ieee80211_key_conf *keyconf,
d6ee54a9 2626 u8 key_offset,
ba3943b0 2627 bool mcast)
2f6319d1
JB		 2628{
2629 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2630 int ret;
2631 const u8 *addr;
2632 struct ieee80211_key_seq seq;
2633 u16 p1k[5];
2634
2635 switch (keyconf->cipher) {
2636 case WLAN_CIPHER_SUITE_TKIP:
2637 addr = iwl_mvm_get_mac_addr(mvm, vif, sta);
2638 /* get phase 1 key from mac80211 */
2639 ieee80211_get_key_rx_seq(keyconf, 0, &seq);
2640 ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k);
ba3943b0 2641 ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast,
d6ee54a9 2642 seq.tkip.iv32, p1k, 0, key_offset);
2f6319d1
JB		 2643 break;
2644 case WLAN_CIPHER_SUITE_CCMP:
ba3943b0
JB		 2645 case WLAN_CIPHER_SUITE_WEP40:
2646 case WLAN_CIPHER_SUITE_WEP104:
2a53d166
AB		 2647 case WLAN_CIPHER_SUITE_GCMP:
2648 case WLAN_CIPHER_SUITE_GCMP_256:
ba3943b0 2649 ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast,
d6ee54a9 2650 0, NULL, 0, key_offset);
2f6319d1
JB		 2651 break;
2652 default:
ba3943b0 2653 ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast,
d6ee54a9 2654 0, NULL, 0, key_offset);
2f6319d1
JB		 2655 }
2656
2657 return ret;
2658}
2659
2660static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id,
ba3943b0
JB		 2661 struct ieee80211_key_conf *keyconf,
2662 bool mcast)
2f6319d1
JB		 2663{
2664 struct iwl_mvm_add_sta_key_cmd cmd = {};
2665 __le16 key_flags;
2666 int ret;
2667 u32 status;
2668
2669 key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) &
2670 STA_KEY_FLG_KEYID_MSK);
2671 key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP);
2672 key_flags |= cpu_to_le16(STA_KEY_NOT_VALID);
2673
ba3943b0 2674 if (mcast)
2f6319d1
JB		 2675 key_flags |= cpu_to_le16(STA_KEY_MULTICAST);
2676
2677 cmd.key_flags = key_flags;
2678 cmd.key_offset = keyconf->hw_key_idx;
2679 cmd.sta_id = sta_id;
2680
2681 status = ADD_STA_SUCCESS;
2682 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd),
2683 &cmd, &status);
2684
2685 switch (status) {
2686 case ADD_STA_SUCCESS:
2687 IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n");
2688 break;
2689 default:
2690 ret = -EIO;
2691 IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n");
2692 break;
2693 }
2694
2695 return ret;
2696}
2697
8ca151b5
JB		 2698int iwl_mvm_set_sta_key(struct iwl_mvm *mvm,
2699 struct ieee80211_vif *vif,
2700 struct ieee80211_sta *sta,
2701 struct ieee80211_key_conf *keyconf,
d6ee54a9 2702 u8 key_offset)
8ca151b5 2703{
ba3943b0 2704 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
5f7a1847 2705 struct iwl_mvm_sta *mvm_sta;
2f6319d1 2706 u8 sta_id;
8ca151b5 2707 int ret;
11828dbc 2708 static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0};
8ca151b5
JB		 2709
2710 lockdep_assert_held(&mvm->mutex);
2711
2712 /* Get the station id from the mvm local station table */
5f7a1847
JB		 2713 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta);
2714 if (!mvm_sta) {
2715 IWL_ERR(mvm, "Failed to find station\n");
8ca151b5
JB		 2716 return -EINVAL;
2717 }
5f7a1847 2718 sta_id = mvm_sta->sta_id;
8ca151b5 2719
8e160ab8
AB		 2720 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
2721 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
2722 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) {
8ca151b5
JB		 2723 ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false);
2724 goto end;
2725 }
2726
2727 /*
2728 * It is possible that the 'sta' parameter is NULL, and thus
2729 * there is a need to retrieve the sta from the local station table.
2730 */
2731 if (!sta) {
2732 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
2733 lockdep_is_held(&mvm->mutex));
2734 if (IS_ERR_OR_NULL(sta)) {
2735 IWL_ERR(mvm, "Invalid station id\n");
2736 return -EINVAL;
2737 }
2738 }
2739
2f6319d1 2740 if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif))
8ca151b5
JB		 2741 return -EINVAL;
2742
d6ee54a9
LC		 2743 /* If the key_offset is not pre-assigned, we need to find a
2744 * new offset to use. In normal cases, the offset is not
2745 * pre-assigned, but during HW_RESTART we want to reuse the
2746 * same indices, so we pass them when this function is called.
2747 *
2748 * In D3 entry, we need to hardcoded the indices (because the
2749 * firmware hardcodes the PTK offset to 0). In this case, we
2750 * need to make sure we don't overwrite the hw_key_idx in the
2751 * keyconf structure, because otherwise we cannot configure
2752 * the original ones back when resuming.
2753 */
2754 if (key_offset == STA_KEY_IDX_INVALID) {
2755 key_offset = iwl_mvm_set_fw_key_idx(mvm);
2756 if (key_offset == STA_KEY_IDX_INVALID)
8ca151b5 2757 return -ENOSPC;
d6ee54a9 2758 keyconf->hw_key_idx = key_offset;
8ca151b5
JB		 2759 }
2760
d6ee54a9 2761 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast);
9c3deeb5 2762 if (ret)
ba3943b0 2763 goto end;
ba3943b0
JB		 2764
2765 /*
2766 * For WEP, the same key is used for multicast and unicast. Upload it
2767 * again, using the same key offset, and now pointing the other one
2768 * to the same key slot (offset).
2769 * If this fails, remove the original as well.
2770 */
2771 if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 ||
2772 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) {
d6ee54a9
LC		 2773 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf,
2774 key_offset, !mcast);
ba3943b0 2775 if (ret) {
ba3943b0 2776 __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast);
9c3deeb5 2777 goto end;
ba3943b0
JB		 2778 }
2779 }
8ca151b5 2780
9c3deeb5
LC		 2781 __set_bit(key_offset, mvm->fw_key_table);
2782
8ca151b5
JB		 2783end:
2784 IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n",
2785 keyconf->cipher, keyconf->keylen, keyconf->keyidx,
11828dbc 2786 sta ? sta->addr : zero_addr, ret);
8ca151b5
JB		 2787 return ret;
2788}
2789
2790int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm,
2791 struct ieee80211_vif *vif,
2792 struct ieee80211_sta *sta,
2793 struct ieee80211_key_conf *keyconf)
2794{
ba3943b0 2795 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
5f7a1847
JB		 2796 struct iwl_mvm_sta *mvm_sta;
2797 u8 sta_id = IWL_MVM_STATION_COUNT;
2dc2a15e 2798 int ret, i;
8ca151b5
JB		 2799
2800 lockdep_assert_held(&mvm->mutex);
2801
5f7a1847
JB		 2802 /* Get the station from the mvm local station table */
2803 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta);
8ca151b5
JB		 2804
2805 IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n",
2806 keyconf->keyidx, sta_id);
2807
8e160ab8
AB		 2808 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
2809 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
2810 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
8ca151b5
JB		 2811 return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true);
2812
2f6319d1 2813 if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) {
8ca151b5
JB		 2814 IWL_ERR(mvm, "offset %d not used in fw key table.\n",
2815 keyconf->hw_key_idx);
2816 return -ENOENT;
2817 }
2818
2dc2a15e
JB		 2819 /* track which key was deleted last */
2820 for (i = 0; i < STA_KEY_MAX_NUM; i++) {
2821 if (mvm->fw_key_deleted[i] < U8_MAX)
2822 mvm->fw_key_deleted[i]++;
2823 }
2824 mvm->fw_key_deleted[keyconf->hw_key_idx] = 0;
2825
5f7a1847 2826 if (!mvm_sta) {
8ca151b5
JB		 2827 IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n");
2828 return 0;
2829 }
2830
5f7a1847
JB		 2831 sta_id = mvm_sta->sta_id;
2832
ba3943b0
JB		 2833 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast);
2834 if (ret)
2835 return ret;
2836
2837 /* delete WEP key twice to get rid of (now useless) offset */
2838 if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 ||
2839 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104)
2840 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast);
2841
2842 return ret;
8ca151b5
JB		 2843}
2844
2845void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm,
2846 struct ieee80211_vif *vif,
2847 struct ieee80211_key_conf *keyconf,
2848 struct ieee80211_sta *sta, u32 iv32,
2849 u16 *phase1key)
2850{
c3eb536a 2851 struct iwl_mvm_sta *mvm_sta;
ba3943b0 2852 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
8ca151b5 2853
c3eb536a
BL		 2854 rcu_read_lock();
2855
5f7a1847
JB		 2856 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta);
2857 if (WARN_ON_ONCE(!mvm_sta))
45854360 2858 goto unlock;
ba3943b0 2859 iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast,
d6ee54a9 2860 iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx);
45854360
JB		 2861
2862 unlock:
c3eb536a 2863 rcu_read_unlock();
8ca151b5
JB		 2864}
2865
9cc40712
JB		 2866void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm,
2867 struct ieee80211_sta *sta)
8ca151b5 2868{
5b577a90 2869 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
f9dc0004 2870 struct iwl_mvm_add_sta_cmd cmd = {
8ca151b5 2871 .add_modify = STA_MODE_MODIFY,
9cc40712 2872 .sta_id = mvmsta->sta_id,
5af01772 2873 .station_flags_msk = cpu_to_le32(STA_FLG_PS),
9cc40712 2874 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
8ca151b5
JB		 2875 };
2876 int ret;
2877
854c5705
SS		 2878 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
2879 iwl_mvm_add_sta_cmd_size(mvm), &cmd);
8ca151b5
JB		 2880 if (ret)
2881 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
2882}
2883
9cc40712
JB		 2884void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm,
2885 struct ieee80211_sta *sta,
8ca151b5 2886 enum ieee80211_frame_release_type reason,
3e56eadf
JB		 2887 u16 cnt, u16 tids, bool more_data,
2888 bool agg)
8ca151b5 2889{
5b577a90 2890 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
f9dc0004 2891 struct iwl_mvm_add_sta_cmd cmd = {
8ca151b5 2892 .add_modify = STA_MODE_MODIFY,
9cc40712 2893 .sta_id = mvmsta->sta_id,
8ca151b5
JB		 2894 .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT,
2895 .sleep_tx_count = cpu_to_le16(cnt),
9cc40712 2896 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
8ca151b5 2897 };
3e56eadf
JB		 2898 int tid, ret;
2899 unsigned long _tids = tids;
2900
2901 /* convert TIDs to ACs - we don't support TSPEC so that's OK
2902 * Note that this field is reserved and unused by firmware not
2903 * supporting GO uAPSD, so it's safe to always do this.
2904 */
2905 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT)
2906 cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]);
2907
2908 /* If we're releasing frames from aggregation queues then check if the
2909 * all queues combined that we're releasing frames from have
2910 * - more frames than the service period, in which case more_data
2911 * needs to be set
2912 * - fewer than 'cnt' frames, in which case we need to adjust the
2913 * firmware command (but do that unconditionally)
2914 */
2915 if (agg) {
2916 int remaining = cnt;
36be0eb6 2917 int sleep_tx_count;
3e56eadf
JB		 2918
2919 spin_lock_bh(&mvmsta->lock);
2920 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) {
2921 struct iwl_mvm_tid_data *tid_data;
2922 u16 n_queued;
2923
2924 tid_data = &mvmsta->tid_data[tid];
2925 if (WARN(tid_data->state != IWL_AGG_ON &&
2926 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA,
2927 "TID %d state is %d\n",
2928 tid, tid_data->state)) {
2929 spin_unlock_bh(&mvmsta->lock);
2930 ieee80211_sta_eosp(sta);
2931 return;
2932 }
2933
2934 n_queued = iwl_mvm_tid_queued(tid_data);
2935 if (n_queued > remaining) {
2936 more_data = true;
2937 remaining = 0;
2938 break;
2939 }
2940 remaining -= n_queued;
2941 }
36be0eb6
EG		 2942 sleep_tx_count = cnt - remaining;
2943 if (reason == IEEE80211_FRAME_RELEASE_UAPSD)
2944 mvmsta->sleep_tx_count = sleep_tx_count;
3e56eadf
JB		 2945 spin_unlock_bh(&mvmsta->lock);
2946
36be0eb6 2947 cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count);
3e56eadf
JB		 2948 if (WARN_ON(cnt - remaining == 0)) {
2949 ieee80211_sta_eosp(sta);
2950 return;
2951 }
2952 }
2953
2954 /* Note: this is ignored by firmware not supporting GO uAPSD */
2955 if (more_data)
2956 cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_MOREDATA);
2957
2958 if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) {
2959 mvmsta->next_status_eosp = true;
2960 cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_PS_POLL);
2961 } else {
2962 cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_UAPSD);
2963 }
8ca151b5 2964
156f92f2
EG		 2965 /* block the Tx queues until the FW updated the sleep Tx count */
2966 iwl_trans_block_txq_ptrs(mvm->trans, true);
2967
2968 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA,
2969 CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK,
854c5705 2970 iwl_mvm_add_sta_cmd_size(mvm), &cmd);
8ca151b5
JB		 2971 if (ret)
2972 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
2973}
3e56eadf 2974
0416841d
JB		 2975void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm,
2976 struct iwl_rx_cmd_buffer *rxb)
3e56eadf
JB		 2977{
2978 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2979 struct iwl_mvm_eosp_notification *notif = (void *)pkt->data;
2980 struct ieee80211_sta *sta;
2981 u32 sta_id = le32_to_cpu(notif->sta_id);
2982
2983 if (WARN_ON_ONCE(sta_id >= IWL_MVM_STATION_COUNT))
0416841d 2984 return;
3e56eadf
JB		 2985
2986 rcu_read_lock();
2987 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
2988 if (!IS_ERR_OR_NULL(sta))
2989 ieee80211_sta_eosp(sta);
2990 rcu_read_unlock();
3e56eadf 2991}
09b0ce1a
AO		 2992
2993void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm,
2994 struct iwl_mvm_sta *mvmsta, bool disable)
2995{
2996 struct iwl_mvm_add_sta_cmd cmd = {
2997 .add_modify = STA_MODE_MODIFY,
2998 .sta_id = mvmsta->sta_id,
2999 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0,
3000 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX),
3001 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
3002 };
3003 int ret;
3004
854c5705
SS		 3005 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
3006 iwl_mvm_add_sta_cmd_size(mvm), &cmd);
09b0ce1a
AO		 3007 if (ret)
3008 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
3009}
003e5236
AO		 3010
3011void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm,
3012 struct ieee80211_sta *sta,
3013 bool disable)
3014{
3015 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3016
3017 spin_lock_bh(&mvm_sta->lock);
3018
3019 if (mvm_sta->disable_tx == disable) {
3020 spin_unlock_bh(&mvm_sta->lock);
3021 return;
3022 }
3023
3024 mvm_sta->disable_tx = disable;
3025
3026 /*
0d365ae5
SS		 3027 * Tell mac80211 to start/stop queuing tx for this station,
3028 * but don't stop queuing if there are still pending frames
003e5236
AO		 3029 * for this station.
3030 */
3031 if (disable || !atomic_read(&mvm->pending_frames[mvm_sta->sta_id]))
3032 ieee80211_sta_block_awake(mvm->hw, sta, disable);
3033
3034 iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable);
3035
3036 spin_unlock_bh(&mvm_sta->lock);
3037}
3038
3039void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm,
3040 struct iwl_mvm_vif *mvmvif,
3041 bool disable)
3042{
3043 struct ieee80211_sta *sta;
3044 struct iwl_mvm_sta *mvm_sta;
3045 int i;
3046
3047 lockdep_assert_held(&mvm->mutex);
3048
3049 /* Block/unblock all the stations of the given mvmvif */
3050 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3051 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3052 lockdep_is_held(&mvm->mutex));
3053 if (IS_ERR_OR_NULL(sta))
3054 continue;
3055
3056 mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3057 if (mvm_sta->mac_id_n_color !=
3058 FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color))
3059 continue;
3060
3061 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable);
3062 }
3063}
dc88b4ba
LC		 3064
3065void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
3066{
3067 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3068 struct iwl_mvm_sta *mvmsta;
3069
3070 rcu_read_lock();
3071
3072 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id);
3073
3074 if (!WARN_ON(!mvmsta))
3075 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true);
3076
3077 rcu_read_unlock();
3078}
Linux 6.x block layer and io_uring tree(s)