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iwlwifi: mvm: use defines for SCD_CONFIG_CMD enablement
[mirror_ubuntu-eoan-kernel.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,
f7c692de 539 .action = SCD_CFG_DISABLE_QUEUE,
58f2cc57
LK		 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];
edbe961c 565 cmd.tid = mvm->queue_info[queue].txq_tid;
58f2cc57
LK		 566 mq = mvm->queue_info[queue].hw_queue_to_mac80211;
567 shared_queue = (mvm->queue_info[queue].hw_queue_refcount > 1);
568 spin_unlock_bh(&mvm->queue_info_lock);
569
9f9af3d7 570 IWL_DEBUG_TX_QUEUES(mvm, "Redirecting TXQ #%d to FIFO #%d\n",
58f2cc57
LK		 571 queue, iwl_mvm_ac_to_tx_fifo[ac]);
572
573 /* Stop MAC queues and wait for this queue to empty */
574 iwl_mvm_stop_mac_queues(mvm, mq);
575 ret = iwl_trans_wait_tx_queue_empty(mvm->trans, BIT(queue));
576 if (ret) {
577 IWL_ERR(mvm, "Error draining queue %d before reconfig\n",
578 queue);
579 ret = -EIO;
580 goto out;
581 }
582
583 /* Before redirecting the queue we need to de-activate it */
584 iwl_trans_txq_disable(mvm->trans, queue, false);
585 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd);
586 if (ret)
587 IWL_ERR(mvm, "Failed SCD disable TXQ %d (ret=%d)\n", queue,
588 ret);
589
590 /* Make sure the SCD wrptr is correctly set before reconfiguring */
591 iwl_trans_txq_enable(mvm->trans, queue, iwl_mvm_ac_to_tx_fifo[ac],
592 cmd.sta_id, tid, LINK_QUAL_AGG_FRAME_LIMIT_DEF,
593 ssn, wdg_timeout);
594
edbe961c
LK		 595 /* Update the TID "owner" of the queue */
596 spin_lock_bh(&mvm->queue_info_lock);
597 mvm->queue_info[queue].txq_tid = tid;
598 spin_unlock_bh(&mvm->queue_info_lock);
599
58f2cc57
LK		 600 /* TODO: Work-around SCD bug when moving back by multiples of 0x40 */
601
602 /* Redirect to lower AC */
603 iwl_mvm_reconfig_scd(mvm, queue, iwl_mvm_ac_to_tx_fifo[ac],
604 cmd.sta_id, tid, LINK_QUAL_AGG_FRAME_LIMIT_DEF,
605 ssn);
606
607 /* Update AC marking of the queue */
608 spin_lock_bh(&mvm->queue_info_lock);
609 mvm->queue_info[queue].mac80211_ac = ac;
610 spin_unlock_bh(&mvm->queue_info_lock);
611
612 /*
613 * Mark queue as shared in transport if shared
614 * Note this has to be done after queue enablement because enablement
615 * can also set this value, and there is no indication there to shared
616 * queues
617 */
618 if (shared_queue)
619 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true);
620
621out:
622 /* Continue using the MAC queues */
623 iwl_mvm_start_mac_queues(mvm, mq);
624
625 return ret;
626}
627
24afba76
LK		 628static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm,
629 struct ieee80211_sta *sta, u8 ac, int tid,
630 struct ieee80211_hdr *hdr)
631{
632 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
633 struct iwl_trans_txq_scd_cfg cfg = {
634 .fifo = iwl_mvm_ac_to_tx_fifo[ac],
635 .sta_id = mvmsta->sta_id,
636 .tid = tid,
637 .frame_limit = IWL_FRAME_LIMIT,
638 };
639 unsigned int wdg_timeout =
640 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false);
641 u8 mac_queue = mvmsta->vif->hw_queue[ac];
642 int queue = -1;
9794c64f
LK		 643 bool using_inactive_queue = false;
644 unsigned long disable_agg_tids = 0;
645 enum iwl_mvm_agg_state queue_state;
42db09c1 646 bool shared_queue = false;
24afba76 647 int ssn;
42db09c1 648 unsigned long tfd_queue_mask;
cf961e16 649 int ret;
24afba76
LK		 650
651 lockdep_assert_held(&mvm->mutex);
652
42db09c1
LK		 653 spin_lock_bh(&mvmsta->lock);
654 tfd_queue_mask = mvmsta->tfd_queue_msk;
655 spin_unlock_bh(&mvmsta->lock);
656
d2515a99 657 spin_lock_bh(&mvm->queue_info_lock);
24afba76
LK		 658
659 /*
660 * Non-QoS, QoS NDP and MGMT frames should go to a MGMT queue, if one
661 * exists
662 */
663 if (!ieee80211_is_data_qos(hdr->frame_control) ||
664 ieee80211_is_qos_nullfunc(hdr->frame_control)) {
9794c64f
LK		 665 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id,
666 IWL_MVM_DQA_MIN_MGMT_QUEUE,
24afba76
LK		 667 IWL_MVM_DQA_MAX_MGMT_QUEUE);
668 if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE)
669 IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n",
670 queue);
671
672 /* If no such queue is found, we'll use a DATA queue instead */
673 }
674
9794c64f
LK		 675 if ((queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) &&
676 (mvm->queue_info[mvmsta->reserved_queue].status ==
677 IWL_MVM_QUEUE_RESERVED ||
678 mvm->queue_info[mvmsta->reserved_queue].status ==
679 IWL_MVM_QUEUE_INACTIVE)) {
24afba76 680 queue = mvmsta->reserved_queue;
9794c64f 681 mvm->queue_info[queue].reserved = true;
24afba76
LK		 682 IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue);
683 }
684
685 if (queue < 0)
9794c64f
LK		 686 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id,
687 IWL_MVM_DQA_MIN_DATA_QUEUE,
24afba76 688 IWL_MVM_DQA_MAX_DATA_QUEUE);
cf961e16 689
9794c64f
LK		 690 /*
691 * Check if this queue is already allocated but inactive.
692 * In such a case, we'll need to first free this queue before enabling
693 * it again, so we'll mark it as reserved to make sure no new traffic
694 * arrives on it
695 */
696 if (queue > 0 &&
697 mvm->queue_info[queue].status == IWL_MVM_QUEUE_INACTIVE) {
698 mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED;
699 using_inactive_queue = true;
700 IWL_DEBUG_TX_QUEUES(mvm,
701 "Re-assigning TXQ %d: sta_id=%d, tid=%d\n",
702 queue, mvmsta->sta_id, tid);
703 }
704
42db09c1
LK		 705 /* No free queue - we'll have to share */
706 if (queue <= 0) {
707 queue = iwl_mvm_get_shared_queue(mvm, tfd_queue_mask, ac);
708 if (queue > 0) {
709 shared_queue = true;
710 mvm->queue_info[queue].status = IWL_MVM_QUEUE_SHARED;
711 }
712 }
713
cf961e16
LK		 714 /*
715 * Mark TXQ as ready, even though it hasn't been fully configured yet,
716 * to make sure no one else takes it.
717 * This will allow avoiding re-acquiring the lock at the end of the
718 * configuration. On error we'll mark it back as free.
719 */
42db09c1 720 if ((queue > 0) && !shared_queue)
cf961e16 721 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY;
24afba76 722
d2515a99 723 spin_unlock_bh(&mvm->queue_info_lock);
24afba76 724
42db09c1
LK		 725 /* This shouldn't happen - out of queues */
726 if (WARN_ON(queue <= 0)) {
727 IWL_ERR(mvm, "No available queues for tid %d on sta_id %d\n",
728 tid, cfg.sta_id);
9f9af3d7 729 return queue;
42db09c1 730 }
24afba76
LK		 731
732 /*
733 * Actual en/disablement of aggregations is through the ADD_STA HCMD,
734 * but for configuring the SCD to send A-MPDUs we need to mark the queue
735 * as aggregatable.
736 * Mark all DATA queues as allowing to be aggregated at some point
737 */
d5216a28
LK		 738 cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE ||
739 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE);
24afba76 740
9794c64f
LK		 741 /*
742 * If this queue was previously inactive (idle) - we need to free it
743 * first
744 */
745 if (using_inactive_queue) {
746 struct iwl_scd_txq_cfg_cmd cmd = {
747 .scd_queue = queue,
f7c692de 748 .action = SCD_CFG_DISABLE_QUEUE,
9794c64f 749 };
93f436e2 750 u8 ac;
9794c64f
LK		 751
752 disable_agg_tids = iwl_mvm_remove_sta_queue_marking(mvm, queue);
753
93f436e2
LK		 754 spin_lock_bh(&mvm->queue_info_lock);
755 ac = mvm->queue_info[queue].mac80211_ac;
756 cmd.sta_id = mvm->queue_info[queue].ra_sta_id;
757 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[ac];
edbe961c 758 cmd.tid = mvm->queue_info[queue].txq_tid;
93f436e2
LK		 759 spin_unlock_bh(&mvm->queue_info_lock);
760
9794c64f 761 /* Disable the queue */
8d98ae6e
LK		 762 if (disable_agg_tids)
763 iwl_mvm_invalidate_sta_queue(mvm, queue,
764 disable_agg_tids, false);
9794c64f
LK		 765 iwl_trans_txq_disable(mvm->trans, queue, false);
766 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd),
767 &cmd);
768 if (ret) {
769 IWL_ERR(mvm,
770 "Failed to free inactive queue %d (ret=%d)\n",
771 queue, ret);
772
773 /* Re-mark the inactive queue as inactive */
774 spin_lock_bh(&mvm->queue_info_lock);
775 mvm->queue_info[queue].status = IWL_MVM_QUEUE_INACTIVE;
776 spin_unlock_bh(&mvm->queue_info_lock);
777
778 return ret;
779 }
8d98ae6e
LK		 780
781 /* If TXQ is allocated to another STA, update removal in FW */
782 if (cmd.sta_id != mvmsta->sta_id)
783 iwl_mvm_invalidate_sta_queue(mvm, queue, 0, true);
9794c64f
LK		 784 }
785
42db09c1
LK		 786 IWL_DEBUG_TX_QUEUES(mvm,
787 "Allocating %squeue #%d to sta %d on tid %d\n",
788 shared_queue ? "shared " : "", queue,
789 mvmsta->sta_id, tid);
790
791 if (shared_queue) {
792 /* Disable any open aggs on this queue */
793 disable_agg_tids = iwl_mvm_get_queue_agg_tids(mvm, queue);
794
795 if (disable_agg_tids) {
796 IWL_DEBUG_TX_QUEUES(mvm, "Disabling aggs on queue %d\n",
797 queue);
798 iwl_mvm_invalidate_sta_queue(mvm, queue,
799 disable_agg_tids, false);
800 }
42db09c1 801 }
24afba76
LK		 802
803 ssn = IEEE80211_SEQ_TO_SN(le16_to_cpu(hdr->seq_ctrl));
804 iwl_mvm_enable_txq(mvm, queue, mac_queue, ssn, &cfg,
805 wdg_timeout);
806
58f2cc57
LK		 807 /*
808 * Mark queue as shared in transport if shared
809 * Note this has to be done after queue enablement because enablement
810 * can also set this value, and there is no indication there to shared
811 * queues
812 */
813 if (shared_queue)
814 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true);
815
24afba76
LK		 816 spin_lock_bh(&mvmsta->lock);
817 mvmsta->tid_data[tid].txq_id = queue;
9794c64f 818 mvmsta->tid_data[tid].is_tid_active = true;
24afba76 819 mvmsta->tfd_queue_msk |= BIT(queue);
9794c64f 820 queue_state = mvmsta->tid_data[tid].state;
24afba76
LK		 821
822 if (mvmsta->reserved_queue == queue)
823 mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE;
824 spin_unlock_bh(&mvmsta->lock);
825
42db09c1
LK		 826 if (!shared_queue) {
827 ret = iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES);
828 if (ret)
829 goto out_err;
cf961e16 830
42db09c1
LK		 831 /* If we need to re-enable aggregations... */
832 if (queue_state == IWL_AGG_ON) {
833 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);
834 if (ret)
835 goto out_err;
836 }
58f2cc57
LK		 837 } else {
838 /* Redirect queue, if needed */
839 ret = iwl_mvm_scd_queue_redirect(mvm, queue, tid, ac, ssn,
840 wdg_timeout, false);
841 if (ret)
842 goto out_err;
42db09c1 843 }
9794c64f 844
42db09c1 845 return 0;
cf961e16
LK		 846
847out_err:
848 iwl_mvm_disable_txq(mvm, queue, mac_queue, tid, 0);
849
850 return ret;
24afba76
LK		 851}
852
9f9af3d7
LK		 853static void iwl_mvm_unshare_queue(struct iwl_mvm *mvm, int queue)
854{
855 struct ieee80211_sta *sta;
856 struct iwl_mvm_sta *mvmsta;
857 s8 sta_id;
858 int tid = -1;
859 unsigned long tid_bitmap;
860 unsigned int wdg_timeout;
861 int ssn;
862 int ret = true;
863
864 lockdep_assert_held(&mvm->mutex);
865
866 spin_lock_bh(&mvm->queue_info_lock);
867 sta_id = mvm->queue_info[queue].ra_sta_id;
868 tid_bitmap = mvm->queue_info[queue].tid_bitmap;
869 spin_unlock_bh(&mvm->queue_info_lock);
870
871 /* Find TID for queue, and make sure it is the only one on the queue */
872 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1);
873 if (tid_bitmap != BIT(tid)) {
874 IWL_ERR(mvm, "Failed to unshare q %d, active tids=0x%lx\n",
875 queue, tid_bitmap);
876 return;
877 }
878
879 IWL_DEBUG_TX_QUEUES(mvm, "Unsharing TXQ %d, keeping tid %d\n", queue,
880 tid);
881
882 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
883 lockdep_is_held(&mvm->mutex));
884
885 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
886 return;
887
888 mvmsta = iwl_mvm_sta_from_mac80211(sta);
889 wdg_timeout = iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false);
890
891 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number);
892
893 ret = iwl_mvm_scd_queue_redirect(mvm, queue, tid,
894 tid_to_mac80211_ac[tid], ssn,
895 wdg_timeout, true);
896 if (ret) {
897 IWL_ERR(mvm, "Failed to redirect TXQ %d\n", queue);
898 return;
899 }
900
901 /* If aggs should be turned back on - do it */
902 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) {
903 struct iwl_mvm_add_sta_cmd cmd;
904
905 mvmsta->tid_disable_agg &= ~BIT(tid);
906
907 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color);
908 cmd.sta_id = mvmsta->sta_id;
909 cmd.add_modify = STA_MODE_MODIFY;
910 cmd.modify_mask = STA_MODIFY_TID_DISABLE_TX;
911 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk);
912 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg);
913
914 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
915 iwl_mvm_add_sta_cmd_size(mvm), &cmd);
916 if (!ret) {
917 IWL_DEBUG_TX_QUEUES(mvm,
918 "TXQ #%d is now aggregated again\n",
919 queue);
920
921 /* Mark queue intenally as aggregating again */
922 iwl_trans_txq_set_shared_mode(mvm->trans, queue, false);
923 }
924 }
925
926 spin_lock_bh(&mvm->queue_info_lock);
927 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY;
928 spin_unlock_bh(&mvm->queue_info_lock);
929}
930
24afba76
LK		 931static inline u8 iwl_mvm_tid_to_ac_queue(int tid)
932{
933 if (tid == IWL_MAX_TID_COUNT)
934 return IEEE80211_AC_VO; /* MGMT */
935
936 return tid_to_mac80211_ac[tid];
937}
938
939static void iwl_mvm_tx_deferred_stream(struct iwl_mvm *mvm,
940 struct ieee80211_sta *sta, int tid)
941{
942 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
943 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
944 struct sk_buff *skb;
945 struct ieee80211_hdr *hdr;
946 struct sk_buff_head deferred_tx;
947 u8 mac_queue;
948 bool no_queue = false; /* Marks if there is a problem with the queue */
949 u8 ac;
950
951 lockdep_assert_held(&mvm->mutex);
952
953 skb = skb_peek(&tid_data->deferred_tx_frames);
954 if (!skb)
955 return;
956 hdr = (void *)skb->data;
957
958 ac = iwl_mvm_tid_to_ac_queue(tid);
959 mac_queue = IEEE80211_SKB_CB(skb)->hw_queue;
960
961 if (tid_data->txq_id == IEEE80211_INVAL_HW_QUEUE &&
962 iwl_mvm_sta_alloc_queue(mvm, sta, ac, tid, hdr)) {
963 IWL_ERR(mvm,
964 "Can't alloc TXQ for sta %d tid %d - dropping frame\n",
965 mvmsta->sta_id, tid);
966
967 /*
968 * Mark queue as problematic so later the deferred traffic is
969 * freed, as we can do nothing with it
970 */
971 no_queue = true;
972 }
973
974 __skb_queue_head_init(&deferred_tx);
975
d2515a99
LK		 976 /* Disable bottom-halves when entering TX path */
977 local_bh_disable();
24afba76
LK		 978 spin_lock(&mvmsta->lock);
979 skb_queue_splice_init(&tid_data->deferred_tx_frames, &deferred_tx);
980 spin_unlock(&mvmsta->lock);
981
24afba76
LK		 982 while ((skb = __skb_dequeue(&deferred_tx)))
983 if (no_queue || iwl_mvm_tx_skb(mvm, skb, sta))
984 ieee80211_free_txskb(mvm->hw, skb);
985 local_bh_enable();
986
987 /* Wake queue */
988 iwl_mvm_start_mac_queues(mvm, BIT(mac_queue));
989}
990
991void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk)
992{
993 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm,
994 add_stream_wk);
995 struct ieee80211_sta *sta;
996 struct iwl_mvm_sta *mvmsta;
997 unsigned long deferred_tid_traffic;
9f9af3d7 998 int queue, sta_id, tid;
24afba76 999
9794c64f
LK		 1000 /* Check inactivity of queues */
1001 iwl_mvm_inactivity_check(mvm);
1002
24afba76
LK		 1003 mutex_lock(&mvm->mutex);
1004
9f9af3d7
LK		 1005 /* Reconfigure queues requiring reconfiguation */
1006 for (queue = 0; queue < IWL_MAX_HW_QUEUES; queue++) {
1007 bool reconfig;
1008
1009 spin_lock_bh(&mvm->queue_info_lock);
1010 reconfig = (mvm->queue_info[queue].status ==
1011 IWL_MVM_QUEUE_RECONFIGURING);
1012 spin_unlock_bh(&mvm->queue_info_lock);
1013
1014 if (reconfig)
1015 iwl_mvm_unshare_queue(mvm, queue);
1016 }
1017
24afba76
LK		 1018 /* Go over all stations with deferred traffic */
1019 for_each_set_bit(sta_id, mvm->sta_deferred_frames,
1020 IWL_MVM_STATION_COUNT) {
1021 clear_bit(sta_id, mvm->sta_deferred_frames);
1022 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1023 lockdep_is_held(&mvm->mutex));
1024 if (IS_ERR_OR_NULL(sta))
1025 continue;
1026
1027 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1028 deferred_tid_traffic = mvmsta->deferred_traffic_tid_map;
1029
1030 for_each_set_bit(tid, &deferred_tid_traffic,
1031 IWL_MAX_TID_COUNT + 1)
1032 iwl_mvm_tx_deferred_stream(mvm, sta, tid);
1033 }
1034
1035 mutex_unlock(&mvm->mutex);
1036}
1037
1038static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm,
d5216a28
LK		 1039 struct ieee80211_sta *sta,
1040 enum nl80211_iftype vif_type)
24afba76
LK		 1041{
1042 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1043 int queue;
1044
9794c64f
LK		 1045 /*
1046 * Check for inactive queues, so we don't reach a situation where we
1047 * can't add a STA due to a shortage in queues that doesn't really exist
1048 */
1049 iwl_mvm_inactivity_check(mvm);
1050
24afba76
LK		 1051 spin_lock_bh(&mvm->queue_info_lock);
1052
1053 /* Make sure we have free resources for this STA */
d5216a28
LK		 1054 if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls &&
1055 !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].hw_queue_refcount &&
cf961e16
LK		 1056 (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status ==
1057 IWL_MVM_QUEUE_FREE))
d5216a28
LK		 1058 queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE;
1059 else
9794c64f
LK		 1060 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id,
1061 IWL_MVM_DQA_MIN_DATA_QUEUE,
d5216a28 1062 IWL_MVM_DQA_MAX_DATA_QUEUE);
24afba76
LK		 1063 if (queue < 0) {
1064 spin_unlock_bh(&mvm->queue_info_lock);
1065 IWL_ERR(mvm, "No available queues for new station\n");
1066 return -ENOSPC;
1067 }
cf961e16 1068 mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED;
24afba76
LK		 1069
1070 spin_unlock_bh(&mvm->queue_info_lock);
1071
1072 mvmsta->reserved_queue = queue;
1073
1074 IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n",
1075 queue, mvmsta->sta_id);
1076
1077 return 0;
1078}
1079
8d98ae6e
LK		 1080/*
1081 * In DQA mode, after a HW restart the queues should be allocated as before, in
1082 * order to avoid race conditions when there are shared queues. This function
1083 * does the re-mapping and queue allocation.
1084 *
1085 * Note that re-enabling aggregations isn't done in this function.
1086 */
1087static void iwl_mvm_realloc_queues_after_restart(struct iwl_mvm *mvm,
1088 struct iwl_mvm_sta *mvm_sta)
1089{
1090 unsigned int wdg_timeout =
1091 iwl_mvm_get_wd_timeout(mvm, mvm_sta->vif, false, false);
1092 int i;
1093 struct iwl_trans_txq_scd_cfg cfg = {
1094 .sta_id = mvm_sta->sta_id,
1095 .frame_limit = IWL_FRAME_LIMIT,
1096 };
1097
1098 /* Make sure reserved queue is still marked as such (or allocated) */
1099 mvm->queue_info[mvm_sta->reserved_queue].status =
1100 IWL_MVM_QUEUE_RESERVED;
1101
1102 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
1103 struct iwl_mvm_tid_data *tid_data = &mvm_sta->tid_data[i];
1104 int txq_id = tid_data->txq_id;
1105 int ac;
1106 u8 mac_queue;
1107
1108 if (txq_id == IEEE80211_INVAL_HW_QUEUE)
1109 continue;
1110
1111 skb_queue_head_init(&tid_data->deferred_tx_frames);
1112
1113 ac = tid_to_mac80211_ac[i];
1114 mac_queue = mvm_sta->vif->hw_queue[ac];
1115
1116 cfg.tid = i;
1117 cfg.fifo = iwl_mvm_ac_to_tx_fifo[ac];
1118 cfg.aggregate = (txq_id >= IWL_MVM_DQA_MIN_DATA_QUEUE ||
1119 txq_id == IWL_MVM_DQA_BSS_CLIENT_QUEUE);
1120
1121 IWL_DEBUG_TX_QUEUES(mvm,
1122 "Re-mapping sta %d tid %d to queue %d\n",
1123 mvm_sta->sta_id, i, txq_id);
1124
1125 iwl_mvm_enable_txq(mvm, txq_id, mac_queue,
1126 IEEE80211_SEQ_TO_SN(tid_data->seq_number),
1127 &cfg, wdg_timeout);
1128
1129 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_READY;
1130 }
1131
1132 atomic_set(&mvm->pending_frames[mvm_sta->sta_id], 0);
1133}
1134
8ca151b5
JB		 1135int iwl_mvm_add_sta(struct iwl_mvm *mvm,
1136 struct ieee80211_vif *vif,
1137 struct ieee80211_sta *sta)
1138{
1139 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
9d8ce6af 1140 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
a571f5f6 1141 struct iwl_mvm_rxq_dup_data *dup_data;
8ca151b5
JB		 1142 int i, ret, sta_id;
1143
1144 lockdep_assert_held(&mvm->mutex);
1145
1146 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
b92e661b
EP		 1147 sta_id = iwl_mvm_find_free_sta_id(mvm,
1148 ieee80211_vif_type_p2p(vif));
8ca151b5
JB		 1149 else
1150 sta_id = mvm_sta->sta_id;
1151
36f4631c 1152 if (sta_id == IWL_MVM_STATION_COUNT)
8ca151b5
JB		 1153 return -ENOSPC;
1154
1155 spin_lock_init(&mvm_sta->lock);
1156
8d98ae6e
LK		 1157 /* In DQA mode, if this is a HW restart, re-alloc existing queues */
1158 if (iwl_mvm_is_dqa_supported(mvm) &&
1159 test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1160 iwl_mvm_realloc_queues_after_restart(mvm, mvm_sta);
1161 goto update_fw;
1162 }
1163
8ca151b5
JB		 1164 mvm_sta->sta_id = sta_id;
1165 mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id,
1166 mvmvif->color);
1167 mvm_sta->vif = vif;
1168 mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
9ee718aa
EL		 1169 mvm_sta->tx_protection = 0;
1170 mvm_sta->tt_tx_protection = false;
8ca151b5
JB		 1171
1172 /* HW restart, don't assume the memory has been zeroed */
e3d4bc8c 1173 atomic_set(&mvm->pending_frames[sta_id], 0);
69191afe 1174 mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */
8ca151b5 1175 mvm_sta->tfd_queue_msk = 0;
a0f6bf2a 1176
e3118ad7
LK		 1177 /*
1178 * Allocate new queues for a TDLS station, unless we're in DQA mode,
1179 * and then they'll be allocated dynamically
1180 */
1181 if (!iwl_mvm_is_dqa_supported(mvm) && sta->tdls) {
a0f6bf2a
AN		 1182 ret = iwl_mvm_tdls_sta_init(mvm, sta);
1183 if (ret)
1184 return ret;
24afba76 1185 } else if (!iwl_mvm_is_dqa_supported(mvm)) {
a0f6bf2a
AN		 1186 for (i = 0; i < IEEE80211_NUM_ACS; i++)
1187 if (vif->hw_queue[i] != IEEE80211_INVAL_HW_QUEUE)
1188 mvm_sta->tfd_queue_msk |= BIT(vif->hw_queue[i]);
1189 }
8ca151b5 1190
6d9d32b8 1191 /* for HW restart - reset everything but the sequence number */
24afba76 1192 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
6d9d32b8
JB		 1193 u16 seq = mvm_sta->tid_data[i].seq_number;
1194 memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i]));
1195 mvm_sta->tid_data[i].seq_number = seq;
24afba76
LK		 1196
1197 if (!iwl_mvm_is_dqa_supported(mvm))
1198 continue;
1199
1200 /*
1201 * Mark all queues for this STA as unallocated and defer TX
1202 * frames until the queue is allocated
1203 */
1204 mvm_sta->tid_data[i].txq_id = IEEE80211_INVAL_HW_QUEUE;
1205 skb_queue_head_init(&mvm_sta->tid_data[i].deferred_tx_frames);
6d9d32b8 1206 }
24afba76 1207 mvm_sta->deferred_traffic_tid_map = 0;
efed6640 1208 mvm_sta->agg_tids = 0;
8ca151b5 1209
a571f5f6
SS		 1210 if (iwl_mvm_has_new_rx_api(mvm) &&
1211 !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1212 dup_data = kcalloc(mvm->trans->num_rx_queues,
1213 sizeof(*dup_data),
1214 GFP_KERNEL);
1215 if (!dup_data)
1216 return -ENOMEM;
1217 mvm_sta->dup_data = dup_data;
1218 }
1219
24afba76 1220 if (iwl_mvm_is_dqa_supported(mvm)) {
d5216a28
LK		 1221 ret = iwl_mvm_reserve_sta_stream(mvm, sta,
1222 ieee80211_vif_type_p2p(vif));
24afba76
LK		 1223 if (ret)
1224 goto err;
1225 }
1226
8d98ae6e 1227update_fw:
24afba76 1228 ret = iwl_mvm_sta_send_to_fw(mvm, sta, false, 0);
8ca151b5 1229 if (ret)
a0f6bf2a 1230 goto err;
8ca151b5 1231
9e848010
JB		 1232 if (vif->type == NL80211_IFTYPE_STATION) {
1233 if (!sta->tdls) {
1234 WARN_ON(mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT);
1235 mvmvif->ap_sta_id = sta_id;
1236 } else {
1237 WARN_ON(mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT);
1238 }
1239 }
8ca151b5
JB		 1240
1241 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta);
1242
1243 return 0;
a0f6bf2a
AN		 1244
1245err:
e3118ad7
LK		 1246 if (!iwl_mvm_is_dqa_supported(mvm) && sta->tdls)
1247 iwl_mvm_tdls_sta_deinit(mvm, sta);
a0f6bf2a 1248 return ret;
8ca151b5
JB		 1249}
1250
7a453973
JB		 1251int iwl_mvm_update_sta(struct iwl_mvm *mvm,
1252 struct ieee80211_vif *vif,
1253 struct ieee80211_sta *sta)
1254{
24afba76 1255 return iwl_mvm_sta_send_to_fw(mvm, sta, true, 0);
7a453973
JB		 1256}
1257
8ca151b5
JB		 1258int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta,
1259 bool drain)
1260{
f9dc0004 1261 struct iwl_mvm_add_sta_cmd cmd = {};
8ca151b5
JB		 1262 int ret;
1263 u32 status;
1264
1265 lockdep_assert_held(&mvm->mutex);
1266
1267 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color);
1268 cmd.sta_id = mvmsta->sta_id;
1269 cmd.add_modify = STA_MODE_MODIFY;
1270 cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0;
1271 cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW);
1272
1273 status = ADD_STA_SUCCESS;
854c5705
SS		 1274 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
1275 iwl_mvm_add_sta_cmd_size(mvm),
f9dc0004 1276 &cmd, &status);
8ca151b5
JB		 1277 if (ret)
1278 return ret;
1279
837c4da9 1280 switch (status & IWL_ADD_STA_STATUS_MASK) {
8ca151b5
JB		 1281 case ADD_STA_SUCCESS:
1282 IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n",
1283 mvmsta->sta_id);
1284 break;
1285 default:
1286 ret = -EIO;
1287 IWL_ERR(mvm, "Couldn't drain frames for staid %d\n",
1288 mvmsta->sta_id);
1289 break;
1290 }
1291
1292 return ret;
1293}
1294
1295/*
1296 * Remove a station from the FW table. Before sending the command to remove
1297 * the station validate that the station is indeed known to the driver (sanity
1298 * only).
1299 */
1300static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id)
1301{
1302 struct ieee80211_sta *sta;
1303 struct iwl_mvm_rm_sta_cmd rm_sta_cmd = {
1304 .sta_id = sta_id,
1305 };
1306 int ret;
1307
1308 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1309 lockdep_is_held(&mvm->mutex));
1310
1311 /* Note: internal stations are marked as error values */
1312 if (!sta) {
1313 IWL_ERR(mvm, "Invalid station id\n");
1314 return -EINVAL;
1315 }
1316
a1022927 1317 ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0,
8ca151b5
JB		 1318 sizeof(rm_sta_cmd), &rm_sta_cmd);
1319 if (ret) {
1320 IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id);
1321 return ret;
1322 }
1323
1324 return 0;
1325}
1326
1327void iwl_mvm_sta_drained_wk(struct work_struct *wk)
1328{
1329 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, sta_drained_wk);
1330 u8 sta_id;
1331
1332 /*
1333 * The mutex is needed because of the SYNC cmd, but not only: if the
1334 * work would run concurrently with iwl_mvm_rm_sta, it would run before
1335 * iwl_mvm_rm_sta sets the station as busy, and exit. Then
1336 * iwl_mvm_rm_sta would set the station as busy, and nobody will clean
1337 * that later.
1338 */
1339 mutex_lock(&mvm->mutex);
1340
1341 for_each_set_bit(sta_id, mvm->sta_drained, IWL_MVM_STATION_COUNT) {
1342 int ret;
1343 struct ieee80211_sta *sta =
1344 rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1345 lockdep_is_held(&mvm->mutex));
1346
1ddbbb0c
JB		 1347 /*
1348 * This station is in use or RCU-removed; the latter happens in
1349 * managed mode, where mac80211 removes the station before we
1350 * can remove it from firmware (we can only do that after the
1351 * MAC is marked unassociated), and possibly while the deauth
1352 * frame to disconnect from the AP is still queued. Then, the
1353 * station pointer is -ENOENT when the last skb is reclaimed.
1354 */
1355 if (!IS_ERR(sta) || PTR_ERR(sta) == -ENOENT)
8ca151b5
JB		 1356 continue;
1357
1358 if (PTR_ERR(sta) == -EINVAL) {
1359 IWL_ERR(mvm, "Drained sta %d, but it is internal?\n",
1360 sta_id);
1361 continue;
1362 }
1363
1364 if (!sta) {
1365 IWL_ERR(mvm, "Drained sta %d, but it was NULL?\n",
1366 sta_id);
1367 continue;
1368 }
1369
1370 WARN_ON(PTR_ERR(sta) != -EBUSY);
1371 /* This station was removed and we waited until it got drained,
1372 * we can now proceed and remove it.
1373 */
1374 ret = iwl_mvm_rm_sta_common(mvm, sta_id);
1375 if (ret) {
1376 IWL_ERR(mvm,
1377 "Couldn't remove sta %d after it was drained\n",
1378 sta_id);
1379 continue;
1380 }
c531c771 1381 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL);
8ca151b5 1382 clear_bit(sta_id, mvm->sta_drained);
a0f6bf2a
AN		 1383
1384 if (mvm->tfd_drained[sta_id]) {
1385 unsigned long i, msk = mvm->tfd_drained[sta_id];
1386
a4ca3ed4 1387 for_each_set_bit(i, &msk, sizeof(msk) * BITS_PER_BYTE)
06ecdba3
AN		 1388 iwl_mvm_disable_txq(mvm, i, i,
1389 IWL_MAX_TID_COUNT, 0);
a0f6bf2a
AN		 1390
1391 mvm->tfd_drained[sta_id] = 0;
1392 IWL_DEBUG_TDLS(mvm, "Drained sta %d, with queues %ld\n",
1393 sta_id, msk);
1394 }
8ca151b5
JB		 1395 }
1396
1397 mutex_unlock(&mvm->mutex);
1398}
1399
24afba76
LK		 1400static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm,
1401 struct ieee80211_vif *vif,
1402 struct iwl_mvm_sta *mvm_sta)
1403{
1404 int ac;
1405 int i;
1406
1407 lockdep_assert_held(&mvm->mutex);
1408
1409 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) {
1410 if (mvm_sta->tid_data[i].txq_id == IEEE80211_INVAL_HW_QUEUE)
1411 continue;
1412
1413 ac = iwl_mvm_tid_to_ac_queue(i);
1414 iwl_mvm_disable_txq(mvm, mvm_sta->tid_data[i].txq_id,
1415 vif->hw_queue[ac], i, 0);
1416 mvm_sta->tid_data[i].txq_id = IEEE80211_INVAL_HW_QUEUE;
1417 }
1418}
1419
8ca151b5
JB		 1420int iwl_mvm_rm_sta(struct iwl_mvm *mvm,
1421 struct ieee80211_vif *vif,
1422 struct ieee80211_sta *sta)
1423{
1424 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
9d8ce6af 1425 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
8ca151b5
JB		 1426 int ret;
1427
1428 lockdep_assert_held(&mvm->mutex);
1429
a571f5f6
SS		 1430 if (iwl_mvm_has_new_rx_api(mvm))
1431 kfree(mvm_sta->dup_data);
1432
a6f035a0
LK		 1433 if ((vif->type == NL80211_IFTYPE_STATION &&
1434 mvmvif->ap_sta_id == mvm_sta->sta_id) ||
1435 iwl_mvm_is_dqa_supported(mvm)){
fe92e32a
EG		 1436 ret = iwl_mvm_drain_sta(mvm, mvm_sta, true);
1437 if (ret)
1438 return ret;
80d85655 1439 /* flush its queues here since we are freeing mvm_sta */
5888a40c 1440 ret = iwl_mvm_flush_tx_path(mvm, mvm_sta->tfd_queue_msk, 0);
fe92e32a
EG		 1441 if (ret)
1442 return ret;
1443 ret = iwl_trans_wait_tx_queue_empty(mvm->trans,
1444 mvm_sta->tfd_queue_msk);
1445 if (ret)
1446 return ret;
1447 ret = iwl_mvm_drain_sta(mvm, mvm_sta, false);
80d85655 1448
24afba76
LK		 1449 /* If DQA is supported - the queues can be disabled now */
1450 if (iwl_mvm_is_dqa_supported(mvm))
1451 iwl_mvm_disable_sta_queues(mvm, vif, mvm_sta);
1452
e3118ad7
LK		 1453 if (vif->type == NL80211_IFTYPE_STATION &&
1454 mvmvif->ap_sta_id == mvm_sta->sta_id) {
1455 /* if associated - we can't remove the AP STA now */
1456 if (vif->bss_conf.assoc)
1457 return ret;
8ca151b5 1458
e3118ad7
LK		 1459 /* unassoc - go ahead - remove the AP STA now */
1460 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
37577fe2 1461
e3118ad7
LK		 1462 /* clear d0i3_ap_sta_id if no longer relevant */
1463 if (mvm->d0i3_ap_sta_id == mvm_sta->sta_id)
1464 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1465 }
8ca151b5
JB		 1466 }
1467
1d3c3f63
AN		 1468 /*
1469 * This shouldn't happen - the TDLS channel switch should be canceled
1470 * before the STA is removed.
1471 */
1472 if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == mvm_sta->sta_id)) {
1473 mvm->tdls_cs.peer.sta_id = IWL_MVM_STATION_COUNT;
1474 cancel_delayed_work(&mvm->tdls_cs.dwork);
1475 }
1476
e3d4bc8c
EG		 1477 /*
1478 * Make sure that the tx response code sees the station as -EBUSY and
1479 * calls the drain worker.
1480 */
1481 spin_lock_bh(&mvm_sta->lock);
8ca151b5
JB		 1482 /*
1483 * There are frames pending on the AC queues for this station.
1484 * We need to wait until all the frames are drained...
1485 */
e3d4bc8c 1486 if (atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) {
8ca151b5
JB		 1487 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
1488 ERR_PTR(-EBUSY));
e3d4bc8c 1489 spin_unlock_bh(&mvm_sta->lock);
a0f6bf2a
AN		 1490
1491 /* disable TDLS sta queues on drain complete */
1492 if (sta->tdls) {
1493 mvm->tfd_drained[mvm_sta->sta_id] =
1494 mvm_sta->tfd_queue_msk;
1495 IWL_DEBUG_TDLS(mvm, "Draining TDLS sta %d\n",
1496 mvm_sta->sta_id);
1497 }
1498
e3d4bc8c 1499 ret = iwl_mvm_drain_sta(mvm, mvm_sta, true);
8ca151b5 1500 } else {
e3d4bc8c 1501 spin_unlock_bh(&mvm_sta->lock);
a0f6bf2a 1502
e3118ad7 1503 if (!iwl_mvm_is_dqa_supported(mvm) && sta->tdls)
a0f6bf2a
AN		 1504 iwl_mvm_tdls_sta_deinit(mvm, sta);
1505
8ca151b5 1506 ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id);
c531c771 1507 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL);
8ca151b5
JB		 1508 }
1509
1510 return ret;
1511}
1512
1513int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm,
1514 struct ieee80211_vif *vif,
1515 u8 sta_id)
1516{
1517 int ret = iwl_mvm_rm_sta_common(mvm, sta_id);
1518
1519 lockdep_assert_held(&mvm->mutex);
1520
c531c771 1521 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL);
8ca151b5
JB		 1522 return ret;
1523}
1524
0e39eb03
CRI		 1525int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm,
1526 struct iwl_mvm_int_sta *sta,
1527 u32 qmask, enum nl80211_iftype iftype)
8ca151b5
JB		 1528{
1529 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
b92e661b 1530 sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype);
8ca151b5
JB		 1531 if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_STATION_COUNT))
1532 return -ENOSPC;
1533 }
1534
1535 sta->tfd_queue_msk = qmask;
1536
1537 /* put a non-NULL value so iterating over the stations won't stop */
1538 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL));
1539 return 0;
1540}
1541
712b24ad
JB		 1542static void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm,
1543 struct iwl_mvm_int_sta *sta)
8ca151b5 1544{
c531c771 1545 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL);
8ca151b5
JB		 1546 memset(sta, 0, sizeof(struct iwl_mvm_int_sta));
1547 sta->sta_id = IWL_MVM_STATION_COUNT;
1548}
1549
1550static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm,
1551 struct iwl_mvm_int_sta *sta,
1552 const u8 *addr,
1553 u16 mac_id, u16 color)
1554{
f9dc0004 1555 struct iwl_mvm_add_sta_cmd cmd;
8ca151b5
JB		 1556 int ret;
1557 u32 status;
1558
1559 lockdep_assert_held(&mvm->mutex);
1560
f9dc0004 1561 memset(&cmd, 0, sizeof(cmd));
8ca151b5
JB		 1562 cmd.sta_id = sta->sta_id;
1563 cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id,
1564 color));
1565
1566 cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk);
cf0cda19 1567 cmd.tid_disable_tx = cpu_to_le16(0xffff);
8ca151b5
JB		 1568
1569 if (addr)
1570 memcpy(cmd.addr, addr, ETH_ALEN);
1571
854c5705
SS		 1572 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
1573 iwl_mvm_add_sta_cmd_size(mvm),
f9dc0004 1574 &cmd, &status);
8ca151b5
JB		 1575 if (ret)
1576 return ret;
1577
837c4da9 1578 switch (status & IWL_ADD_STA_STATUS_MASK) {
8ca151b5
JB		 1579 case ADD_STA_SUCCESS:
1580 IWL_DEBUG_INFO(mvm, "Internal station added.\n");
1581 return 0;
1582 default:
1583 ret = -EIO;
1584 IWL_ERR(mvm, "Add internal station failed, status=0x%x\n",
1585 status);
1586 break;
1587 }
1588 return ret;
1589}
1590
1591int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm)
1592{
4cf677fd
EG		 1593 unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ?
1594 mvm->cfg->base_params->wd_timeout :
1595 IWL_WATCHDOG_DISABLED;
8ca151b5
JB		 1596 int ret;
1597
1598 lockdep_assert_held(&mvm->mutex);
1599
7da91b0e 1600 /* Map Aux queue to fifo - needs to happen before adding Aux station */
28d0793e
LK		 1601 if (!iwl_mvm_is_dqa_supported(mvm))
1602 iwl_mvm_enable_ac_txq(mvm, mvm->aux_queue, mvm->aux_queue,
1603 IWL_MVM_TX_FIFO_MCAST, 0, wdg_timeout);
7da91b0e
AM		 1604
1605 /* Allocate aux station and assign to it the aux queue */
1606 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue),
b92e661b 1607 NL80211_IFTYPE_UNSPECIFIED);
8ca151b5
JB		 1608 if (ret)
1609 return ret;
1610
28d0793e
LK		 1611 if (iwl_mvm_is_dqa_supported(mvm)) {
1612 struct iwl_trans_txq_scd_cfg cfg = {
1613 .fifo = IWL_MVM_TX_FIFO_MCAST,
1614 .sta_id = mvm->aux_sta.sta_id,
1615 .tid = IWL_MAX_TID_COUNT,
1616 .aggregate = false,
1617 .frame_limit = IWL_FRAME_LIMIT,
1618 };
1619
1620 iwl_mvm_enable_txq(mvm, mvm->aux_queue, mvm->aux_queue, 0, &cfg,
1621 wdg_timeout);
1622 }
1623
8ca151b5
JB		 1624 ret = iwl_mvm_add_int_sta_common(mvm, &mvm->aux_sta, NULL,
1625 MAC_INDEX_AUX, 0);
1626
1627 if (ret)
1628 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
1629 return ret;
1630}
1631
0e39eb03
CRI		 1632int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1633{
1634 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1635
1636 lockdep_assert_held(&mvm->mutex);
1637 return iwl_mvm_add_int_sta_common(mvm, &mvm->snif_sta, vif->addr,
1638 mvmvif->id, 0);
1639}
1640
1641int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1642{
1643 int ret;
1644
1645 lockdep_assert_held(&mvm->mutex);
1646
1647 ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id);
1648 if (ret)
1649 IWL_WARN(mvm, "Failed sending remove station\n");
1650
1651 return ret;
1652}
1653
1654void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm)
1655{
1656 iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta);
1657}
1658
712b24ad
JB		 1659void iwl_mvm_del_aux_sta(struct iwl_mvm *mvm)
1660{
1661 lockdep_assert_held(&mvm->mutex);
1662
1663 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
1664}
1665
8ca151b5
JB		 1666/*
1667 * Send the add station command for the vif's broadcast station.
1668 * Assumes that the station was already allocated.
1669 *
1670 * @mvm: the mvm component
1671 * @vif: the interface to which the broadcast station is added
1672 * @bsta: the broadcast station to add.
1673 */
013290aa 1674int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
8ca151b5
JB		 1675{
1676 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
013290aa 1677 struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta;
5023d966 1678 static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
a4243402 1679 const u8 *baddr = _baddr;
8ca151b5
JB		 1680
1681 lockdep_assert_held(&mvm->mutex);
1682
de24f638
LK		 1683 if (iwl_mvm_is_dqa_supported(mvm)) {
1684 struct iwl_trans_txq_scd_cfg cfg = {
1685 .fifo = IWL_MVM_TX_FIFO_VO,
1686 .sta_id = mvmvif->bcast_sta.sta_id,
1687 .tid = IWL_MAX_TID_COUNT,
1688 .aggregate = false,
1689 .frame_limit = IWL_FRAME_LIMIT,
1690 };
1691 unsigned int wdg_timeout =
1692 iwl_mvm_get_wd_timeout(mvm, vif, false, false);
1693 int queue;
1694
1695 if ((vif->type == NL80211_IFTYPE_AP) &&
1696 (mvmvif->bcast_sta.tfd_queue_msk &
1697 BIT(IWL_MVM_DQA_AP_PROBE_RESP_QUEUE)))
1698 queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE;
4c965139
LK		 1699 else if ((vif->type == NL80211_IFTYPE_P2P_DEVICE) &&
1700 (mvmvif->bcast_sta.tfd_queue_msk &
1701 BIT(IWL_MVM_DQA_P2P_DEVICE_QUEUE)))
1702 queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE;
de24f638
LK		 1703 else if (WARN(1, "Missed required TXQ for adding bcast STA\n"))
1704 return -EINVAL;
1705
1706 iwl_mvm_enable_txq(mvm, queue, vif->hw_queue[0], 0, &cfg,
1707 wdg_timeout);
1708 }
1709
5023d966
JB		 1710 if (vif->type == NL80211_IFTYPE_ADHOC)
1711 baddr = vif->bss_conf.bssid;
1712
8ca151b5
JB		 1713 if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_STATION_COUNT))
1714 return -ENOSPC;
1715
1716 return iwl_mvm_add_int_sta_common(mvm, bsta, baddr,
1717 mvmvif->id, mvmvif->color);
1718}
1719
1720/* Send the FW a request to remove the station from it's internal data
1721 * structures, but DO NOT remove the entry from the local data structures. */
013290aa 1722int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
8ca151b5 1723{
013290aa 1724 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
8ca151b5
JB		 1725 int ret;
1726
1727 lockdep_assert_held(&mvm->mutex);
1728
013290aa 1729 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id);
8ca151b5
JB		 1730 if (ret)
1731 IWL_WARN(mvm, "Failed sending remove station\n");
1732 return ret;
1733}
1734
013290aa
JB		 1735int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1736{
1737 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
de24f638 1738 u32 qmask = 0;
013290aa
JB		 1739
1740 lockdep_assert_held(&mvm->mutex);
1741
de24f638
LK		 1742 if (!iwl_mvm_is_dqa_supported(mvm))
1743 qmask = iwl_mvm_mac_get_queues_mask(vif);
013290aa 1744
de24f638
LK		 1745 if (vif->type == NL80211_IFTYPE_AP) {
1746 /*
1747 * The firmware defines the TFD queue mask to only be relevant
1748 * for *unicast* queues, so the multicast (CAB) queue shouldn't
1749 * be included.
1750 */
013290aa
JB		 1751 qmask &= ~BIT(vif->cab_queue);
1752
de24f638
LK		 1753 if (iwl_mvm_is_dqa_supported(mvm))
1754 qmask |= BIT(IWL_MVM_DQA_AP_PROBE_RESP_QUEUE);
4c965139
LK		 1755 } else if (iwl_mvm_is_dqa_supported(mvm) &&
1756 vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1757 qmask |= BIT(IWL_MVM_DQA_P2P_DEVICE_QUEUE);
de24f638
LK		 1758 }
1759
013290aa
JB		 1760 return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, qmask,
1761 ieee80211_vif_type_p2p(vif));
1762}
1763
8ca151b5
JB		 1764/* Allocate a new station entry for the broadcast station to the given vif,
1765 * and send it to the FW.
1766 * Note that each P2P mac should have its own broadcast station.
1767 *
1768 * @mvm: the mvm component
1769 * @vif: the interface to which the broadcast station is added
1770 * @bsta: the broadcast station to add. */
013290aa 1771int iwl_mvm_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
8ca151b5
JB		 1772{
1773 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
013290aa 1774 struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta;
8ca151b5
JB		 1775 int ret;
1776
1777 lockdep_assert_held(&mvm->mutex);
1778
013290aa 1779 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
8ca151b5
JB		 1780 if (ret)
1781 return ret;
1782
013290aa 1783 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
8ca151b5
JB		 1784
1785 if (ret)
1786 iwl_mvm_dealloc_int_sta(mvm, bsta);
013290aa 1787
8ca151b5
JB		 1788 return ret;
1789}
1790
013290aa
JB		 1791void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1792{
1793 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1794
1795 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta);
1796}
1797
8ca151b5
JB		 1798/*
1799 * Send the FW a request to remove the station from it's internal data
1800 * structures, and in addition remove it from the local data structure.
1801 */
013290aa 1802int iwl_mvm_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
8ca151b5
JB		 1803{
1804 int ret;
1805
1806 lockdep_assert_held(&mvm->mutex);
1807
013290aa
JB		 1808 ret = iwl_mvm_send_rm_bcast_sta(mvm, vif);
1809
1810 iwl_mvm_dealloc_bcast_sta(mvm, vif);
8ca151b5 1811
8ca151b5
JB		 1812 return ret;
1813}
1814
113a0447
EG		 1815#define IWL_MAX_RX_BA_SESSIONS 16
1816
b915c101 1817static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid)
10b2b201 1818{
b915c101
SS		 1819 struct iwl_mvm_delba_notif notif = {
1820 .metadata.type = IWL_MVM_RXQ_NOTIF_DEL_BA,
1821 .metadata.sync = 1,
1822 .delba.baid = baid,
10b2b201 1823 };
b915c101
SS		 1824 iwl_mvm_sync_rx_queues_internal(mvm, (void *)&notif, sizeof(notif));
1825};
10b2b201 1826
b915c101
SS		 1827static void iwl_mvm_free_reorder(struct iwl_mvm *mvm,
1828 struct iwl_mvm_baid_data *data)
1829{
1830 int i;
1831
1832 iwl_mvm_sync_rxq_del_ba(mvm, data->baid);
1833
1834 for (i = 0; i < mvm->trans->num_rx_queues; i++) {
1835 int j;
1836 struct iwl_mvm_reorder_buffer *reorder_buf =
1837 &data->reorder_buf[i];
1838
0690405f
SS		 1839 spin_lock_bh(&reorder_buf->lock);
1840 if (likely(!reorder_buf->num_stored)) {
1841 spin_unlock_bh(&reorder_buf->lock);
b915c101 1842 continue;
0690405f 1843 }
b915c101
SS		 1844
1845 /*
1846 * This shouldn't happen in regular DELBA since the internal
1847 * delBA notification should trigger a release of all frames in
1848 * the reorder buffer.
1849 */
1850 WARN_ON(1);
1851
1852 for (j = 0; j < reorder_buf->buf_size; j++)
1853 __skb_queue_purge(&reorder_buf->entries[j]);
0690405f
SS		 1854 /*
1855 * Prevent timer re-arm. This prevents a very far fetched case
1856 * where we timed out on the notification. There may be prior
1857 * RX frames pending in the RX queue before the notification
1858 * that might get processed between now and the actual deletion
1859 * and we would re-arm the timer although we are deleting the
1860 * reorder buffer.
1861 */
1862 reorder_buf->removed = true;
1863 spin_unlock_bh(&reorder_buf->lock);
1864 del_timer_sync(&reorder_buf->reorder_timer);
b915c101
SS		 1865 }
1866}
1867
1868static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm,
1869 u32 sta_id,
1870 struct iwl_mvm_baid_data *data,
1871 u16 ssn, u8 buf_size)
1872{
1873 int i;
1874
1875 for (i = 0; i < mvm->trans->num_rx_queues; i++) {
1876 struct iwl_mvm_reorder_buffer *reorder_buf =
1877 &data->reorder_buf[i];
1878 int j;
1879
1880 reorder_buf->num_stored = 0;
1881 reorder_buf->head_sn = ssn;
1882 reorder_buf->buf_size = buf_size;
0690405f
SS		 1883 /* rx reorder timer */
1884 reorder_buf->reorder_timer.function =
1885 iwl_mvm_reorder_timer_expired;
1886 reorder_buf->reorder_timer.data = (unsigned long)reorder_buf;
1887 init_timer(&reorder_buf->reorder_timer);
1888 spin_lock_init(&reorder_buf->lock);
1889 reorder_buf->mvm = mvm;
b915c101
SS		 1890 reorder_buf->queue = i;
1891 reorder_buf->sta_id = sta_id;
1892 for (j = 0; j < reorder_buf->buf_size; j++)
1893 __skb_queue_head_init(&reorder_buf->entries[j]);
1894 }
10b2b201
SS		 1895}
1896
8ca151b5 1897int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
10b2b201 1898 int tid, u16 ssn, bool start, u8 buf_size, u16 timeout)
8ca151b5 1899{
9d8ce6af 1900 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
f9dc0004 1901 struct iwl_mvm_add_sta_cmd cmd = {};
10b2b201 1902 struct iwl_mvm_baid_data *baid_data = NULL;
8ca151b5
JB		 1903 int ret;
1904 u32 status;
1905
1906 lockdep_assert_held(&mvm->mutex);
1907
113a0447
EG		 1908 if (start && mvm->rx_ba_sessions >= IWL_MAX_RX_BA_SESSIONS) {
1909 IWL_WARN(mvm, "Not enough RX BA SESSIONS\n");
1910 return -ENOSPC;
1911 }
1912
10b2b201
SS		 1913 if (iwl_mvm_has_new_rx_api(mvm) && start) {
1914 /*
1915 * Allocate here so if allocation fails we can bail out early
1916 * before starting the BA session in the firmware
1917 */
b915c101
SS		 1918 baid_data = kzalloc(sizeof(*baid_data) +
1919 mvm->trans->num_rx_queues *
1920 sizeof(baid_data->reorder_buf[0]),
1921 GFP_KERNEL);
10b2b201
SS		 1922 if (!baid_data)
1923 return -ENOMEM;
1924 }
1925
8ca151b5
JB		 1926 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color);
1927 cmd.sta_id = mvm_sta->sta_id;
1928 cmd.add_modify = STA_MODE_MODIFY;
93a42667
EG		 1929 if (start) {
1930 cmd.add_immediate_ba_tid = (u8) tid;
1931 cmd.add_immediate_ba_ssn = cpu_to_le16(ssn);
854c5705 1932 cmd.rx_ba_window = cpu_to_le16((u16)buf_size);
93a42667
EG		 1933 } else {
1934 cmd.remove_immediate_ba_tid = (u8) tid;
1935 }
8ca151b5
JB		 1936 cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID :
1937 STA_MODIFY_REMOVE_BA_TID;
1938
1939 status = ADD_STA_SUCCESS;
854c5705
SS		 1940 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
1941 iwl_mvm_add_sta_cmd_size(mvm),
f9dc0004 1942 &cmd, &status);
8ca151b5 1943 if (ret)
10b2b201 1944 goto out_free;
8ca151b5 1945
837c4da9 1946 switch (status & IWL_ADD_STA_STATUS_MASK) {
8ca151b5 1947 case ADD_STA_SUCCESS:
35263a03
SS		 1948 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n",
1949 start ? "start" : "stopp");
8ca151b5
JB		 1950 break;
1951 case ADD_STA_IMMEDIATE_BA_FAILURE:
1952 IWL_WARN(mvm, "RX BA Session refused by fw\n");
1953 ret = -ENOSPC;
1954 break;
1955 default:
1956 ret = -EIO;
1957 IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n",
1958 start ? "start" : "stopp", status);
1959 break;
1960 }
1961
10b2b201
SS		 1962 if (ret)
1963 goto out_free;
1964
1965 if (start) {
1966 u8 baid;
1967
1968 mvm->rx_ba_sessions++;
1969
1970 if (!iwl_mvm_has_new_rx_api(mvm))
1971 return 0;
1972
1973 if (WARN_ON(!(status & IWL_ADD_STA_BAID_VALID_MASK))) {
1974 ret = -EINVAL;
1975 goto out_free;
1976 }
1977 baid = (u8)((status & IWL_ADD_STA_BAID_MASK) >>
1978 IWL_ADD_STA_BAID_SHIFT);
1979 baid_data->baid = baid;
1980 baid_data->timeout = timeout;
1981 baid_data->last_rx = jiffies;
1982 init_timer(&baid_data->session_timer);
1983 baid_data->session_timer.function =
1984 iwl_mvm_rx_agg_session_expired;
1985 baid_data->session_timer.data =
1986 (unsigned long)&mvm->baid_map[baid];
1987 baid_data->mvm = mvm;
1988 baid_data->tid = tid;
1989 baid_data->sta_id = mvm_sta->sta_id;
1990
1991 mvm_sta->tid_to_baid[tid] = baid;
1992 if (timeout)
1993 mod_timer(&baid_data->session_timer,
1994 TU_TO_EXP_TIME(timeout * 2));
1995
b915c101
SS		 1996 iwl_mvm_init_reorder_buffer(mvm, mvm_sta->sta_id,
1997 baid_data, ssn, buf_size);
10b2b201
SS		 1998 /*
1999 * protect the BA data with RCU to cover a case where our
2000 * internal RX sync mechanism will timeout (not that it's
2001 * supposed to happen) and we will free the session data while
2002 * RX is being processed in parallel
2003 */
35263a03
SS		 2004 IWL_DEBUG_HT(mvm, "Sta %d(%d) is assigned to BAID %d\n",
2005 mvm_sta->sta_id, tid, baid);
10b2b201
SS		 2006 WARN_ON(rcu_access_pointer(mvm->baid_map[baid]));
2007 rcu_assign_pointer(mvm->baid_map[baid], baid_data);
60dec523 2008 } else {
10b2b201
SS		 2009 u8 baid = mvm_sta->tid_to_baid[tid];
2010
60dec523
SS		 2011 if (mvm->rx_ba_sessions > 0)
2012 /* check that restart flow didn't zero the counter */
2013 mvm->rx_ba_sessions--;
10b2b201
SS		 2014 if (!iwl_mvm_has_new_rx_api(mvm))
2015 return 0;
2016
2017 if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID))
2018 return -EINVAL;
2019
2020 baid_data = rcu_access_pointer(mvm->baid_map[baid]);
2021 if (WARN_ON(!baid_data))
2022 return -EINVAL;
2023
2024 /* synchronize all rx queues so we can safely delete */
b915c101 2025 iwl_mvm_free_reorder(mvm, baid_data);
10b2b201 2026 del_timer_sync(&baid_data->session_timer);
10b2b201
SS		 2027 RCU_INIT_POINTER(mvm->baid_map[baid], NULL);
2028 kfree_rcu(baid_data, rcu_head);
35263a03 2029 IWL_DEBUG_HT(mvm, "BAID %d is free\n", baid);
113a0447 2030 }
10b2b201 2031 return 0;
113a0447 2032
10b2b201
SS		 2033out_free:
2034 kfree(baid_data);
8ca151b5
JB		 2035 return ret;
2036}
2037
9794c64f
LK		 2038int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
2039 int tid, u8 queue, bool start)
8ca151b5 2040{
9d8ce6af 2041 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
f9dc0004 2042 struct iwl_mvm_add_sta_cmd cmd = {};
8ca151b5
JB		 2043 int ret;
2044 u32 status;
2045
2046 lockdep_assert_held(&mvm->mutex);
2047
2048 if (start) {
2049 mvm_sta->tfd_queue_msk |= BIT(queue);
2050 mvm_sta->tid_disable_agg &= ~BIT(tid);
2051 } else {
cf961e16
LK		 2052 /* In DQA-mode the queue isn't removed on agg termination */
2053 if (!iwl_mvm_is_dqa_supported(mvm))
2054 mvm_sta->tfd_queue_msk &= ~BIT(queue);
8ca151b5
JB		 2055 mvm_sta->tid_disable_agg |= BIT(tid);
2056 }
2057
2058 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color);
2059 cmd.sta_id = mvm_sta->sta_id;
2060 cmd.add_modify = STA_MODE_MODIFY;
2061 cmd.modify_mask = STA_MODIFY_QUEUES | STA_MODIFY_TID_DISABLE_TX;
2062 cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk);
2063 cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg);
2064
2065 status = ADD_STA_SUCCESS;
854c5705
SS		 2066 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
2067 iwl_mvm_add_sta_cmd_size(mvm),
f9dc0004 2068 &cmd, &status);
8ca151b5
JB		 2069 if (ret)
2070 return ret;
2071
837c4da9 2072 switch (status & IWL_ADD_STA_STATUS_MASK) {
8ca151b5
JB		 2073 case ADD_STA_SUCCESS:
2074 break;
2075 default:
2076 ret = -EIO;
2077 IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n",
2078 start ? "start" : "stopp", status);
2079 break;
2080 }
2081
2082 return ret;
2083}
2084
b797e3fb 2085const u8 tid_to_mac80211_ac[] = {
8ca151b5
JB		 2086 IEEE80211_AC_BE,
2087 IEEE80211_AC_BK,
2088 IEEE80211_AC_BK,
2089 IEEE80211_AC_BE,
2090 IEEE80211_AC_VI,
2091 IEEE80211_AC_VI,
2092 IEEE80211_AC_VO,
2093 IEEE80211_AC_VO,
9794c64f 2094 IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */
8ca151b5
JB		 2095};
2096
3e56eadf
JB		 2097static const u8 tid_to_ucode_ac[] = {
2098 AC_BE,
2099 AC_BK,
2100 AC_BK,
2101 AC_BE,
2102 AC_VI,
2103 AC_VI,
2104 AC_VO,
2105 AC_VO,
2106};
2107
8ca151b5
JB		 2108int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2109 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
2110{
5b577a90 2111 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
8ca151b5
JB		 2112 struct iwl_mvm_tid_data *tid_data;
2113 int txq_id;
4ecafae9 2114 int ret;
8ca151b5
JB		 2115
2116 if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT))
2117 return -EINVAL;
2118
2119 if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) {
2120 IWL_ERR(mvm, "Start AGG when state is not IWL_AGG_OFF %d!\n",
2121 mvmsta->tid_data[tid].state);
2122 return -ENXIO;
2123 }
2124
2125 lockdep_assert_held(&mvm->mutex);
2126
b2492501
AN		 2127 spin_lock_bh(&mvmsta->lock);
2128
2129 /* possible race condition - we entered D0i3 while starting agg */
2130 if (test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) {
2131 spin_unlock_bh(&mvmsta->lock);
2132 IWL_ERR(mvm, "Entered D0i3 while starting Tx agg\n");
2133 return -EIO;
2134 }
2135
9f9af3d7 2136 spin_lock(&mvm->queue_info_lock);
4ecafae9 2137
cf961e16
LK		 2138 /*
2139 * Note the possible cases:
2140 * 1. In DQA mode with an enabled TXQ - TXQ needs to become agg'ed
2141 * 2. Non-DQA mode: the TXQ hasn't yet been enabled, so find a free
2142 * one and mark it as reserved
2143 * 3. In DQA mode, but no traffic yet on this TID: same treatment as in
2144 * non-DQA mode, since the TXQ hasn't yet been allocated
2145 */
2146 txq_id = mvmsta->tid_data[tid].txq_id;
9f9af3d7
LK		 2147 if (iwl_mvm_is_dqa_supported(mvm) &&
2148 unlikely(mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_SHARED)) {
2149 ret = -ENXIO;
2150 IWL_DEBUG_TX_QUEUES(mvm,
2151 "Can't start tid %d agg on shared queue!\n",
2152 tid);
2153 goto release_locks;
2154 } else if (!iwl_mvm_is_dqa_supported(mvm) ||
cf961e16 2155 mvm->queue_info[txq_id].status != IWL_MVM_QUEUE_READY) {
9794c64f
LK		 2156 txq_id = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id,
2157 mvm->first_agg_queue,
cf961e16
LK		 2158 mvm->last_agg_queue);
2159 if (txq_id < 0) {
2160 ret = txq_id;
cf961e16
LK		 2161 IWL_ERR(mvm, "Failed to allocate agg queue\n");
2162 goto release_locks;
2163 }
2164
2165 /* TXQ hasn't yet been enabled, so mark it only as reserved */
2166 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED;
4ecafae9 2167 }
9f9af3d7
LK		 2168
2169 spin_unlock(&mvm->queue_info_lock);
8ca151b5 2170
cf961e16
LK		 2171 IWL_DEBUG_TX_QUEUES(mvm,
2172 "AGG for tid %d will be on queue #%d\n",
2173 tid, txq_id);
2174
8ca151b5 2175 tid_data = &mvmsta->tid_data[tid];
9a886586 2176 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
8ca151b5
JB		 2177 tid_data->txq_id = txq_id;
2178 *ssn = tid_data->ssn;
2179
2180 IWL_DEBUG_TX_QUEUES(mvm,
2181 "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n",
2182 mvmsta->sta_id, tid, txq_id, tid_data->ssn,
2183 tid_data->next_reclaimed);
2184
2185 if (tid_data->ssn == tid_data->next_reclaimed) {
2186 tid_data->state = IWL_AGG_STARTING;
2187 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
2188 } else {
2189 tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA;
2190 }
2191
4ecafae9 2192 ret = 0;
9f9af3d7 2193 goto out;
4ecafae9
LK		 2194
2195release_locks:
9f9af3d7
LK		 2196 spin_unlock(&mvm->queue_info_lock);
2197out:
8ca151b5
JB		 2198 spin_unlock_bh(&mvmsta->lock);
2199
4ecafae9 2200 return ret;
8ca151b5
JB		 2201}
2202
2203int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
bb81bb68
EG		 2204 struct ieee80211_sta *sta, u16 tid, u8 buf_size,
2205 bool amsdu)
8ca151b5 2206{
5b577a90 2207 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
8ca151b5 2208 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
5d42e7b2
EG		 2209 unsigned int wdg_timeout =
2210 iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false);
eea76c36 2211 int queue, ret;
cf961e16 2212 bool alloc_queue = true;
9f9af3d7 2213 enum iwl_mvm_queue_status queue_status;
8ca151b5
JB		 2214 u16 ssn;
2215
eea76c36
EG		 2216 struct iwl_trans_txq_scd_cfg cfg = {
2217 .sta_id = mvmsta->sta_id,
2218 .tid = tid,
2219 .frame_limit = buf_size,
2220 .aggregate = true,
2221 };
2222
efed6640
ES		 2223 BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE)
2224 != IWL_MAX_TID_COUNT);
2225
8ca151b5
JB		 2226 buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF);
2227
2228 spin_lock_bh(&mvmsta->lock);
2229 ssn = tid_data->ssn;
2230 queue = tid_data->txq_id;
2231 tid_data->state = IWL_AGG_ON;
efed6640 2232 mvmsta->agg_tids |= BIT(tid);
8ca151b5 2233 tid_data->ssn = 0xffff;
bb81bb68 2234 tid_data->amsdu_in_ampdu_allowed = amsdu;
8ca151b5
JB		 2235 spin_unlock_bh(&mvmsta->lock);
2236
eea76c36 2237 cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]];
8ca151b5 2238
9f9af3d7
LK		 2239 spin_lock_bh(&mvm->queue_info_lock);
2240 queue_status = mvm->queue_info[queue].status;
2241 spin_unlock_bh(&mvm->queue_info_lock);
2242
cf961e16
LK		 2243 /* In DQA mode, the existing queue might need to be reconfigured */
2244 if (iwl_mvm_is_dqa_supported(mvm)) {
cf961e16
LK		 2245 /* Maybe there is no need to even alloc a queue... */
2246 if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY)
2247 alloc_queue = false;
cf961e16
LK		 2248
2249 /*
2250 * Only reconfig the SCD for the queue if the window size has
2251 * changed from current (become smaller)
2252 */
2253 if (!alloc_queue && buf_size < mvmsta->max_agg_bufsize) {
2254 /*
2255 * If reconfiguring an existing queue, it first must be
2256 * drained
2257 */
2258 ret = iwl_trans_wait_tx_queue_empty(mvm->trans,
2259 BIT(queue));
2260 if (ret) {
2261 IWL_ERR(mvm,
2262 "Error draining queue before reconfig\n");
2263 return ret;
2264 }
2265
2266 ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo,
2267 mvmsta->sta_id, tid,
2268 buf_size, ssn);
2269 if (ret) {
2270 IWL_ERR(mvm,
2271 "Error reconfiguring TXQ #%d\n", queue);
2272 return ret;
2273 }
2274 }
2275 }
2276
2277 if (alloc_queue)
2278 iwl_mvm_enable_txq(mvm, queue,
2279 vif->hw_queue[tid_to_mac80211_ac[tid]], ssn,
2280 &cfg, wdg_timeout);
fa7878e7 2281
9f9af3d7
LK		 2282 /* Send ADD_STA command to enable aggs only if the queue isn't shared */
2283 if (queue_status != IWL_MVM_QUEUE_SHARED) {
2284 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);
2285 if (ret)
2286 return -EIO;
2287 }
8ca151b5 2288
4ecafae9
LK		 2289 /* No need to mark as reserved */
2290 spin_lock_bh(&mvm->queue_info_lock);
cf961e16 2291 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY;
4ecafae9
LK		 2292 spin_unlock_bh(&mvm->queue_info_lock);
2293
8ca151b5
JB		 2294 /*
2295 * Even though in theory the peer could have different
2296 * aggregation reorder buffer sizes for different sessions,
2297 * our ucode doesn't allow for that and has a global limit
2298 * for each station. Therefore, use the minimum of all the
2299 * aggregation sessions and our default value.
2300 */
2301 mvmsta->max_agg_bufsize =
2302 min(mvmsta->max_agg_bufsize, buf_size);
2303 mvmsta->lq_sta.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize;
2304
9ee718aa
EL		 2305 IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n",
2306 sta->addr, tid);
2307
9e680946 2308 return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.lq, false);
8ca151b5
JB		 2309}
2310
2311int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2312 struct ieee80211_sta *sta, u16 tid)
2313{
5b577a90 2314 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
8ca151b5
JB		 2315 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2316 u16 txq_id;
2317 int err;
2318
f9aa8dd3
EG		 2319 /*
2320 * If mac80211 is cleaning its state, then say that we finished since
2321 * our state has been cleared anyway.
2322 */
2323 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
2324 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
2325 return 0;
2326 }
2327
8ca151b5
JB		 2328 spin_lock_bh(&mvmsta->lock);
2329
2330 txq_id = tid_data->txq_id;
2331
2332 IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n",
2333 mvmsta->sta_id, tid, txq_id, tid_data->state);
2334
efed6640
ES		 2335 mvmsta->agg_tids &= ~BIT(tid);
2336
4ecafae9 2337 spin_lock_bh(&mvm->queue_info_lock);
cf961e16
LK		 2338 /*
2339 * The TXQ is marked as reserved only if no traffic came through yet
2340 * This means no traffic has been sent on this TID (agg'd or not), so
2341 * we no longer have use for the queue. Since it hasn't even been
2342 * allocated through iwl_mvm_enable_txq, so we can just mark it back as
2343 * free.
2344 */
2345 if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED)
2346 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE;
9f9af3d7 2347
4ecafae9
LK		 2348 spin_unlock_bh(&mvm->queue_info_lock);
2349
8ca151b5
JB		 2350 switch (tid_data->state) {
2351 case IWL_AGG_ON:
9a886586 2352 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
8ca151b5
JB		 2353
2354 IWL_DEBUG_TX_QUEUES(mvm,
2355 "ssn = %d, next_recl = %d\n",
2356 tid_data->ssn, tid_data->next_reclaimed);
2357
2358 /* There are still packets for this RA / TID in the HW */
2359 if (tid_data->ssn != tid_data->next_reclaimed) {
2360 tid_data->state = IWL_EMPTYING_HW_QUEUE_DELBA;
2361 err = 0;
2362 break;
2363 }
2364
2365 tid_data->ssn = 0xffff;
f7f89e7b 2366 tid_data->state = IWL_AGG_OFF;
f7f89e7b
JB		 2367 spin_unlock_bh(&mvmsta->lock);
2368
2369 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
2370
2371 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false);
2372
cf961e16
LK		 2373 if (!iwl_mvm_is_dqa_supported(mvm)) {
2374 int mac_queue = vif->hw_queue[tid_to_mac80211_ac[tid]];
2375
2376 iwl_mvm_disable_txq(mvm, txq_id, mac_queue, tid, 0);
2377 }
f7f89e7b 2378 return 0;
8ca151b5
JB		 2379 case IWL_AGG_STARTING:
2380 case IWL_EMPTYING_HW_QUEUE_ADDBA:
2381 /*
2382 * The agg session has been stopped before it was set up. This
2383 * can happen when the AddBA timer times out for example.
2384 */
2385
2386 /* No barriers since we are under mutex */
2387 lockdep_assert_held(&mvm->mutex);
8ca151b5
JB		 2388
2389 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
2390 tid_data->state = IWL_AGG_OFF;
2391 err = 0;
2392 break;
2393 default:
2394 IWL_ERR(mvm,
2395 "Stopping AGG while state not ON or starting for %d on %d (%d)\n",
2396 mvmsta->sta_id, tid, tid_data->state);
2397 IWL_ERR(mvm,
2398 "\ttid_data->txq_id = %d\n", tid_data->txq_id);
2399 err = -EINVAL;
2400 }
2401
2402 spin_unlock_bh(&mvmsta->lock);
2403
2404 return err;
2405}
2406
e3d9e7ce
EG		 2407int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2408 struct ieee80211_sta *sta, u16 tid)
2409{
5b577a90 2410 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
e3d9e7ce
EG		 2411 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2412 u16 txq_id;
b6658ff8 2413 enum iwl_mvm_agg_state old_state;
e3d9e7ce
EG		 2414
2415 /*
2416 * First set the agg state to OFF to avoid calling
2417 * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty.
2418 */
2419 spin_lock_bh(&mvmsta->lock);
2420 txq_id = tid_data->txq_id;
2421 IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n",
2422 mvmsta->sta_id, tid, txq_id, tid_data->state);
b6658ff8 2423 old_state = tid_data->state;
e3d9e7ce 2424 tid_data->state = IWL_AGG_OFF;
efed6640 2425 mvmsta->agg_tids &= ~BIT(tid);
e3d9e7ce
EG		 2426 spin_unlock_bh(&mvmsta->lock);
2427
4ecafae9 2428 spin_lock_bh(&mvm->queue_info_lock);
cf961e16
LK		 2429 /*
2430 * The TXQ is marked as reserved only if no traffic came through yet
2431 * This means no traffic has been sent on this TID (agg'd or not), so
2432 * we no longer have use for the queue. Since it hasn't even been
2433 * allocated through iwl_mvm_enable_txq, so we can just mark it back as
2434 * free.
2435 */
2436 if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED)
2437 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE;
4ecafae9
LK		 2438 spin_unlock_bh(&mvm->queue_info_lock);
2439
b6658ff8 2440 if (old_state >= IWL_AGG_ON) {
fe92e32a 2441 iwl_mvm_drain_sta(mvm, mvmsta, true);
5888a40c 2442 if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id), 0))
b6658ff8 2443 IWL_ERR(mvm, "Couldn't flush the AGG queue\n");
fe92e32a
EG		 2444 iwl_trans_wait_tx_queue_empty(mvm->trans,
2445 mvmsta->tfd_queue_msk);
2446 iwl_mvm_drain_sta(mvm, mvmsta, false);
b6658ff8 2447
f7f89e7b
JB		 2448 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false);
2449
cf961e16
LK		 2450 if (!iwl_mvm_is_dqa_supported(mvm)) {
2451 int mac_queue = vif->hw_queue[tid_to_mac80211_ac[tid]];
2452
2453 iwl_mvm_disable_txq(mvm, tid_data->txq_id, mac_queue,
2454 tid, 0);
2455 }
b6658ff8 2456 }
e3d9e7ce 2457
e3d9e7ce
EG		 2458 return 0;
2459}
2460
8ca151b5
JB		 2461static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm)
2462{
2dc2a15e 2463 int i, max = -1, max_offs = -1;
8ca151b5
JB		 2464
2465 lockdep_assert_held(&mvm->mutex);
2466
2dc2a15e
JB		 2467 /* Pick the unused key offset with the highest 'deleted'
2468 * counter. Every time a key is deleted, all the counters
2469 * are incremented and the one that was just deleted is
2470 * reset to zero. Thus, the highest counter is the one
2471 * that was deleted longest ago. Pick that one.
2472 */
2473 for (i = 0; i < STA_KEY_MAX_NUM; i++) {
2474 if (test_bit(i, mvm->fw_key_table))
2475 continue;
2476 if (mvm->fw_key_deleted[i] > max) {
2477 max = mvm->fw_key_deleted[i];
2478 max_offs = i;
2479 }
2480 }
8ca151b5 2481
2dc2a15e 2482 if (max_offs < 0)
8ca151b5
JB		 2483 return STA_KEY_IDX_INVALID;
2484
2dc2a15e 2485 return max_offs;
8ca151b5
JB		 2486}
2487
5f7a1847
JB		 2488static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm,
2489 struct ieee80211_vif *vif,
2490 struct ieee80211_sta *sta)
8ca151b5 2491{
5b530e95 2492 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
8ca151b5 2493
5f7a1847
JB		 2494 if (sta)
2495 return iwl_mvm_sta_from_mac80211(sta);
8ca151b5
JB		 2496
2497 /*
2498 * The device expects GTKs for station interfaces to be
2499 * installed as GTKs for the AP station. If we have no
2500 * station ID, then use AP's station ID.
2501 */
2502 if (vif->type == NL80211_IFTYPE_STATION &&
9513c5e1
AA		 2503 mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
2504 u8 sta_id = mvmvif->ap_sta_id;
2505
7d6a1ab6
EG		 2506 sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id],
2507 lockdep_is_held(&mvm->mutex));
2508
9513c5e1
AA		 2509 /*
2510 * It is possible that the 'sta' parameter is NULL,
2511 * for example when a GTK is removed - the sta_id will then
2512 * be the AP ID, and no station was passed by mac80211.
2513 */
7d6a1ab6
EG		 2514 if (IS_ERR_OR_NULL(sta))
2515 return NULL;
2516
2517 return iwl_mvm_sta_from_mac80211(sta);
9513c5e1 2518 }
8ca151b5 2519
5f7a1847 2520 return NULL;
8ca151b5
JB		 2521}
2522
2523static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm,
2524 struct iwl_mvm_sta *mvm_sta,
ba3943b0 2525 struct ieee80211_key_conf *keyconf, bool mcast,
d6ee54a9
LC		 2526 u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags,
2527 u8 key_offset)
8ca151b5 2528{
5a258aae 2529 struct iwl_mvm_add_sta_key_cmd cmd = {};
f9dc0004 2530 __le16 key_flags;
79920749
JB		 2531 int ret;
2532 u32 status;
8ca151b5
JB		 2533 u16 keyidx;
2534 int i;
2f6319d1 2535 u8 sta_id = mvm_sta->sta_id;
8ca151b5
JB		 2536
2537 keyidx = (keyconf->keyidx << STA_KEY_FLG_KEYID_POS) &
2538 STA_KEY_FLG_KEYID_MSK;
2539 key_flags = cpu_to_le16(keyidx);
2540 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP);
2541
2542 switch (keyconf->cipher) {
2543 case WLAN_CIPHER_SUITE_TKIP:
2544 key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP);
5a258aae 2545 cmd.tkip_rx_tsc_byte2 = tkip_iv32;
8ca151b5 2546 for (i = 0; i < 5; i++)
5a258aae
MS		 2547 cmd.tkip_rx_ttak[i] = cpu_to_le16(tkip_p1k[i]);
2548 memcpy(cmd.key, keyconf->key, keyconf->keylen);
8ca151b5
JB		 2549 break;
2550 case WLAN_CIPHER_SUITE_CCMP:
2551 key_flags |= cpu_to_le16(STA_KEY_FLG_CCM);
5a258aae 2552 memcpy(cmd.key, keyconf->key, keyconf->keylen);
8ca151b5 2553 break;
ba3943b0
JB		 2554 case WLAN_CIPHER_SUITE_WEP104:
2555 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES);
aa0cb08b 2556 /* fall through */
ba3943b0
JB		 2557 case WLAN_CIPHER_SUITE_WEP40:
2558 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP);
2559 memcpy(cmd.key + 3, keyconf->key, keyconf->keylen);
2560 break;
2a53d166
AB		 2561 case WLAN_CIPHER_SUITE_GCMP_256:
2562 key_flags |= cpu_to_le16(STA_KEY_FLG_KEY_32BYTES);
2563 /* fall through */
2564 case WLAN_CIPHER_SUITE_GCMP:
2565 key_flags |= cpu_to_le16(STA_KEY_FLG_GCMP);
2566 memcpy(cmd.key, keyconf->key, keyconf->keylen);
2567 break;
8ca151b5 2568 default:
e36e5433
MS		 2569 key_flags |= cpu_to_le16(STA_KEY_FLG_EXT);
2570 memcpy(cmd.key, keyconf->key, keyconf->keylen);
8ca151b5
JB		 2571 }
2572
ba3943b0 2573 if (mcast)
8ca151b5
JB		 2574 key_flags |= cpu_to_le16(STA_KEY_MULTICAST);
2575
d6ee54a9 2576 cmd.key_offset = key_offset;
5a258aae 2577 cmd.key_flags = key_flags;
8ca151b5
JB		 2578 cmd.sta_id = sta_id;
2579
2580 status = ADD_STA_SUCCESS;
a1022927 2581 if (cmd_flags & CMD_ASYNC)
f9dc0004
EG		 2582 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC,
2583 sizeof(cmd), &cmd);
a1022927
EG		 2584 else
2585 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd),
2586 &cmd, &status);
8ca151b5
JB		 2587
2588 switch (status) {
2589 case ADD_STA_SUCCESS:
2590 IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n");
2591 break;
2592 default:
2593 ret = -EIO;
2594 IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n");
2595 break;
2596 }
2597
2598 return ret;
2599}
2600
2601static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm,
2602 struct ieee80211_key_conf *keyconf,
2603 u8 sta_id, bool remove_key)
2604{
2605 struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {};
2606
2607 /* verify the key details match the required command's expectations */
8e160ab8
AB		 2608 if (WARN_ON((keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) ||
2609 (keyconf->keyidx != 4 && keyconf->keyidx != 5) ||
2610 (keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC &&
2611 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_128 &&
2612 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_256)))
2613 return -EINVAL;
2614
2615 if (WARN_ON(!iwl_mvm_has_new_rx_api(mvm) &&
2616 keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC))
8ca151b5
JB		 2617 return -EINVAL;
2618
2619 igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx);
2620 igtk_cmd.sta_id = cpu_to_le32(sta_id);
2621
2622 if (remove_key) {
2623 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID);
2624 } else {
2625 struct ieee80211_key_seq seq;
2626 const u8 *pn;
2627
aa950524
AB		 2628 switch (keyconf->cipher) {
2629 case WLAN_CIPHER_SUITE_AES_CMAC:
2630 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM);
2631 break;
8e160ab8
AB		 2632 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
2633 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
2634 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_GCMP);
2635 break;
aa950524
AB		 2636 default:
2637 return -EINVAL;
2638 }
2639
8e160ab8
AB		 2640 memcpy(igtk_cmd.igtk, keyconf->key, keyconf->keylen);
2641 if (keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
2642 igtk_cmd.ctrl_flags |=
2643 cpu_to_le32(STA_KEY_FLG_KEY_32BYTES);
8ca151b5
JB		 2644 ieee80211_get_key_rx_seq(keyconf, 0, &seq);
2645 pn = seq.aes_cmac.pn;
2646 igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) |
2647 ((u64) pn[4] << 8) |
2648 ((u64) pn[3] << 16) |
2649 ((u64) pn[2] << 24) |
2650 ((u64) pn[1] << 32) |
2651 ((u64) pn[0] << 40));
2652 }
2653
2654 IWL_DEBUG_INFO(mvm, "%s igtk for sta %u\n",
2655 remove_key ? "removing" : "installing",
2656 igtk_cmd.sta_id);
2657
8e160ab8
AB		 2658 if (!iwl_mvm_has_new_rx_api(mvm)) {
2659 struct iwl_mvm_mgmt_mcast_key_cmd_v1 igtk_cmd_v1 = {
2660 .ctrl_flags = igtk_cmd.ctrl_flags,
2661 .key_id = igtk_cmd.key_id,
2662 .sta_id = igtk_cmd.sta_id,
2663 .receive_seq_cnt = igtk_cmd.receive_seq_cnt
2664 };
2665
2666 memcpy(igtk_cmd_v1.igtk, igtk_cmd.igtk,
2667 ARRAY_SIZE(igtk_cmd_v1.igtk));
2668 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0,
2669 sizeof(igtk_cmd_v1), &igtk_cmd_v1);
2670 }
a1022927 2671 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0,
8ca151b5
JB		 2672 sizeof(igtk_cmd), &igtk_cmd);
2673}
2674
2675
2676static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm,
2677 struct ieee80211_vif *vif,
2678 struct ieee80211_sta *sta)
2679{
5b530e95 2680 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
8ca151b5
JB		 2681
2682 if (sta)
2683 return sta->addr;
2684
2685 if (vif->type == NL80211_IFTYPE_STATION &&
2686 mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
2687 u8 sta_id = mvmvif->ap_sta_id;
2688 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
2689 lockdep_is_held(&mvm->mutex));
2690 return sta->addr;
2691 }
2692
2693
2694 return NULL;
2695}
2696
2f6319d1
JB		 2697static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm,
2698 struct ieee80211_vif *vif,
2699 struct ieee80211_sta *sta,
ba3943b0 2700 struct ieee80211_key_conf *keyconf,
d6ee54a9 2701 u8 key_offset,
ba3943b0 2702 bool mcast)
2f6319d1
JB		 2703{
2704 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2705 int ret;
2706 const u8 *addr;
2707 struct ieee80211_key_seq seq;
2708 u16 p1k[5];
2709
2710 switch (keyconf->cipher) {
2711 case WLAN_CIPHER_SUITE_TKIP:
2712 addr = iwl_mvm_get_mac_addr(mvm, vif, sta);
2713 /* get phase 1 key from mac80211 */
2714 ieee80211_get_key_rx_seq(keyconf, 0, &seq);
2715 ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k);
ba3943b0 2716 ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast,
d6ee54a9 2717 seq.tkip.iv32, p1k, 0, key_offset);
2f6319d1
JB		 2718 break;
2719 case WLAN_CIPHER_SUITE_CCMP:
ba3943b0
JB		 2720 case WLAN_CIPHER_SUITE_WEP40:
2721 case WLAN_CIPHER_SUITE_WEP104:
2a53d166
AB		 2722 case WLAN_CIPHER_SUITE_GCMP:
2723 case WLAN_CIPHER_SUITE_GCMP_256:
ba3943b0 2724 ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast,
d6ee54a9 2725 0, NULL, 0, key_offset);
2f6319d1
JB		 2726 break;
2727 default:
ba3943b0 2728 ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast,
d6ee54a9 2729 0, NULL, 0, key_offset);
2f6319d1
JB		 2730 }
2731
2732 return ret;
2733}
2734
2735static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id,
ba3943b0
JB		 2736 struct ieee80211_key_conf *keyconf,
2737 bool mcast)
2f6319d1
JB		 2738{
2739 struct iwl_mvm_add_sta_key_cmd cmd = {};
2740 __le16 key_flags;
2741 int ret;
2742 u32 status;
2743
2744 key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) &
2745 STA_KEY_FLG_KEYID_MSK);
2746 key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP);
2747 key_flags |= cpu_to_le16(STA_KEY_NOT_VALID);
2748
ba3943b0 2749 if (mcast)
2f6319d1
JB		 2750 key_flags |= cpu_to_le16(STA_KEY_MULTICAST);
2751
2752 cmd.key_flags = key_flags;
2753 cmd.key_offset = keyconf->hw_key_idx;
2754 cmd.sta_id = sta_id;
2755
2756 status = ADD_STA_SUCCESS;
2757 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd),
2758 &cmd, &status);
2759
2760 switch (status) {
2761 case ADD_STA_SUCCESS:
2762 IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n");
2763 break;
2764 default:
2765 ret = -EIO;
2766 IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n");
2767 break;
2768 }
2769
2770 return ret;
2771}
2772
8ca151b5
JB		 2773int iwl_mvm_set_sta_key(struct iwl_mvm *mvm,
2774 struct ieee80211_vif *vif,
2775 struct ieee80211_sta *sta,
2776 struct ieee80211_key_conf *keyconf,
d6ee54a9 2777 u8 key_offset)
8ca151b5 2778{
ba3943b0 2779 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
5f7a1847 2780 struct iwl_mvm_sta *mvm_sta;
2f6319d1 2781 u8 sta_id;
8ca151b5 2782 int ret;
11828dbc 2783 static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0};
8ca151b5
JB		 2784
2785 lockdep_assert_held(&mvm->mutex);
2786
2787 /* Get the station id from the mvm local station table */
5f7a1847
JB		 2788 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta);
2789 if (!mvm_sta) {
2790 IWL_ERR(mvm, "Failed to find station\n");
8ca151b5
JB		 2791 return -EINVAL;
2792 }
5f7a1847 2793 sta_id = mvm_sta->sta_id;
8ca151b5 2794
8e160ab8
AB		 2795 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
2796 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
2797 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) {
8ca151b5
JB		 2798 ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false);
2799 goto end;
2800 }
2801
2802 /*
2803 * It is possible that the 'sta' parameter is NULL, and thus
2804 * there is a need to retrieve the sta from the local station table.
2805 */
2806 if (!sta) {
2807 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
2808 lockdep_is_held(&mvm->mutex));
2809 if (IS_ERR_OR_NULL(sta)) {
2810 IWL_ERR(mvm, "Invalid station id\n");
2811 return -EINVAL;
2812 }
2813 }
2814
2f6319d1 2815 if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif))
8ca151b5
JB		 2816 return -EINVAL;
2817
d6ee54a9
LC		 2818 /* If the key_offset is not pre-assigned, we need to find a
2819 * new offset to use. In normal cases, the offset is not
2820 * pre-assigned, but during HW_RESTART we want to reuse the
2821 * same indices, so we pass them when this function is called.
2822 *
2823 * In D3 entry, we need to hardcoded the indices (because the
2824 * firmware hardcodes the PTK offset to 0). In this case, we
2825 * need to make sure we don't overwrite the hw_key_idx in the
2826 * keyconf structure, because otherwise we cannot configure
2827 * the original ones back when resuming.
2828 */
2829 if (key_offset == STA_KEY_IDX_INVALID) {
2830 key_offset = iwl_mvm_set_fw_key_idx(mvm);
2831 if (key_offset == STA_KEY_IDX_INVALID)
8ca151b5 2832 return -ENOSPC;
d6ee54a9 2833 keyconf->hw_key_idx = key_offset;
8ca151b5
JB		 2834 }
2835
d6ee54a9 2836 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast);
9c3deeb5 2837 if (ret)
ba3943b0 2838 goto end;
ba3943b0
JB		 2839
2840 /*
2841 * For WEP, the same key is used for multicast and unicast. Upload it
2842 * again, using the same key offset, and now pointing the other one
2843 * to the same key slot (offset).
2844 * If this fails, remove the original as well.
2845 */
2846 if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 ||
2847 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) {
d6ee54a9
LC		 2848 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf,
2849 key_offset, !mcast);
ba3943b0 2850 if (ret) {
ba3943b0 2851 __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast);
9c3deeb5 2852 goto end;
ba3943b0
JB		 2853 }
2854 }
8ca151b5 2855
9c3deeb5
LC		 2856 __set_bit(key_offset, mvm->fw_key_table);
2857
8ca151b5
JB		 2858end:
2859 IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n",
2860 keyconf->cipher, keyconf->keylen, keyconf->keyidx,
11828dbc 2861 sta ? sta->addr : zero_addr, ret);
8ca151b5
JB		 2862 return ret;
2863}
2864
2865int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm,
2866 struct ieee80211_vif *vif,
2867 struct ieee80211_sta *sta,
2868 struct ieee80211_key_conf *keyconf)
2869{
ba3943b0 2870 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
5f7a1847
JB		 2871 struct iwl_mvm_sta *mvm_sta;
2872 u8 sta_id = IWL_MVM_STATION_COUNT;
2dc2a15e 2873 int ret, i;
8ca151b5
JB		 2874
2875 lockdep_assert_held(&mvm->mutex);
2876
5f7a1847
JB		 2877 /* Get the station from the mvm local station table */
2878 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta);
8ca151b5
JB		 2879
2880 IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n",
2881 keyconf->keyidx, sta_id);
2882
8e160ab8
AB		 2883 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
2884 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
2885 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
8ca151b5
JB		 2886 return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true);
2887
2f6319d1 2888 if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) {
8ca151b5
JB		 2889 IWL_ERR(mvm, "offset %d not used in fw key table.\n",
2890 keyconf->hw_key_idx);
2891 return -ENOENT;
2892 }
2893
2dc2a15e
JB		 2894 /* track which key was deleted last */
2895 for (i = 0; i < STA_KEY_MAX_NUM; i++) {
2896 if (mvm->fw_key_deleted[i] < U8_MAX)
2897 mvm->fw_key_deleted[i]++;
2898 }
2899 mvm->fw_key_deleted[keyconf->hw_key_idx] = 0;
2900
5f7a1847 2901 if (!mvm_sta) {
8ca151b5
JB		 2902 IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n");
2903 return 0;
2904 }
2905
5f7a1847
JB		 2906 sta_id = mvm_sta->sta_id;
2907
ba3943b0
JB		 2908 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast);
2909 if (ret)
2910 return ret;
2911
2912 /* delete WEP key twice to get rid of (now useless) offset */
2913 if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 ||
2914 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104)
2915 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast);
2916
2917 return ret;
8ca151b5
JB		 2918}
2919
2920void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm,
2921 struct ieee80211_vif *vif,
2922 struct ieee80211_key_conf *keyconf,
2923 struct ieee80211_sta *sta, u32 iv32,
2924 u16 *phase1key)
2925{
c3eb536a 2926 struct iwl_mvm_sta *mvm_sta;
ba3943b0 2927 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
8ca151b5 2928
c3eb536a
BL		 2929 rcu_read_lock();
2930
5f7a1847
JB		 2931 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta);
2932 if (WARN_ON_ONCE(!mvm_sta))
45854360 2933 goto unlock;
ba3943b0 2934 iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast,
d6ee54a9 2935 iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx);
45854360
JB		 2936
2937 unlock:
c3eb536a 2938 rcu_read_unlock();
8ca151b5
JB		 2939}
2940
9cc40712
JB		 2941void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm,
2942 struct ieee80211_sta *sta)
8ca151b5 2943{
5b577a90 2944 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
f9dc0004 2945 struct iwl_mvm_add_sta_cmd cmd = {
8ca151b5 2946 .add_modify = STA_MODE_MODIFY,
9cc40712 2947 .sta_id = mvmsta->sta_id,
5af01772 2948 .station_flags_msk = cpu_to_le32(STA_FLG_PS),
9cc40712 2949 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
8ca151b5
JB		 2950 };
2951 int ret;
2952
854c5705
SS		 2953 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
2954 iwl_mvm_add_sta_cmd_size(mvm), &cmd);
8ca151b5
JB		 2955 if (ret)
2956 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
2957}
2958
9cc40712
JB		 2959void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm,
2960 struct ieee80211_sta *sta,
8ca151b5 2961 enum ieee80211_frame_release_type reason,
3e56eadf
JB		 2962 u16 cnt, u16 tids, bool more_data,
2963 bool agg)
8ca151b5 2964{
5b577a90 2965 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
f9dc0004 2966 struct iwl_mvm_add_sta_cmd cmd = {
8ca151b5 2967 .add_modify = STA_MODE_MODIFY,
9cc40712 2968 .sta_id = mvmsta->sta_id,
8ca151b5
JB		 2969 .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT,
2970 .sleep_tx_count = cpu_to_le16(cnt),
9cc40712 2971 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
8ca151b5 2972 };
3e56eadf
JB		 2973 int tid, ret;
2974 unsigned long _tids = tids;
2975
2976 /* convert TIDs to ACs - we don't support TSPEC so that's OK
2977 * Note that this field is reserved and unused by firmware not
2978 * supporting GO uAPSD, so it's safe to always do this.
2979 */
2980 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT)
2981 cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]);
2982
2983 /* If we're releasing frames from aggregation queues then check if the
2984 * all queues combined that we're releasing frames from have
2985 * - more frames than the service period, in which case more_data
2986 * needs to be set
2987 * - fewer than 'cnt' frames, in which case we need to adjust the
2988 * firmware command (but do that unconditionally)
2989 */
2990 if (agg) {
2991 int remaining = cnt;
36be0eb6 2992 int sleep_tx_count;
3e56eadf
JB		 2993
2994 spin_lock_bh(&mvmsta->lock);
2995 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) {
2996 struct iwl_mvm_tid_data *tid_data;
2997 u16 n_queued;
2998
2999 tid_data = &mvmsta->tid_data[tid];
3000 if (WARN(tid_data->state != IWL_AGG_ON &&
3001 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA,
3002 "TID %d state is %d\n",
3003 tid, tid_data->state)) {
3004 spin_unlock_bh(&mvmsta->lock);
3005 ieee80211_sta_eosp(sta);
3006 return;
3007 }
3008
3009 n_queued = iwl_mvm_tid_queued(tid_data);
3010 if (n_queued > remaining) {
3011 more_data = true;
3012 remaining = 0;
3013 break;
3014 }
3015 remaining -= n_queued;
3016 }
36be0eb6
EG		 3017 sleep_tx_count = cnt - remaining;
3018 if (reason == IEEE80211_FRAME_RELEASE_UAPSD)
3019 mvmsta->sleep_tx_count = sleep_tx_count;
3e56eadf
JB		 3020 spin_unlock_bh(&mvmsta->lock);
3021
36be0eb6 3022 cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count);
3e56eadf
JB		 3023 if (WARN_ON(cnt - remaining == 0)) {
3024 ieee80211_sta_eosp(sta);
3025 return;
3026 }
3027 }
3028
3029 /* Note: this is ignored by firmware not supporting GO uAPSD */
3030 if (more_data)
3031 cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_MOREDATA);
3032
3033 if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) {
3034 mvmsta->next_status_eosp = true;
3035 cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_PS_POLL);
3036 } else {
3037 cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_UAPSD);
3038 }
8ca151b5 3039
156f92f2
EG		 3040 /* block the Tx queues until the FW updated the sleep Tx count */
3041 iwl_trans_block_txq_ptrs(mvm->trans, true);
3042
3043 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA,
3044 CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK,
854c5705 3045 iwl_mvm_add_sta_cmd_size(mvm), &cmd);
8ca151b5
JB		 3046 if (ret)
3047 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
3048}
3e56eadf 3049
0416841d
JB		 3050void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm,
3051 struct iwl_rx_cmd_buffer *rxb)
3e56eadf
JB		 3052{
3053 struct iwl_rx_packet *pkt = rxb_addr(rxb);
3054 struct iwl_mvm_eosp_notification *notif = (void *)pkt->data;
3055 struct ieee80211_sta *sta;
3056 u32 sta_id = le32_to_cpu(notif->sta_id);
3057
3058 if (WARN_ON_ONCE(sta_id >= IWL_MVM_STATION_COUNT))
0416841d 3059 return;
3e56eadf
JB		 3060
3061 rcu_read_lock();
3062 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
3063 if (!IS_ERR_OR_NULL(sta))
3064 ieee80211_sta_eosp(sta);
3065 rcu_read_unlock();
3e56eadf 3066}
09b0ce1a
AO		 3067
3068void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm,
3069 struct iwl_mvm_sta *mvmsta, bool disable)
3070{
3071 struct iwl_mvm_add_sta_cmd cmd = {
3072 .add_modify = STA_MODE_MODIFY,
3073 .sta_id = mvmsta->sta_id,
3074 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0,
3075 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX),
3076 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
3077 };
3078 int ret;
3079
854c5705
SS		 3080 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
3081 iwl_mvm_add_sta_cmd_size(mvm), &cmd);
09b0ce1a
AO		 3082 if (ret)
3083 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
3084}
003e5236
AO		 3085
3086void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm,
3087 struct ieee80211_sta *sta,
3088 bool disable)
3089{
3090 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3091
3092 spin_lock_bh(&mvm_sta->lock);
3093
3094 if (mvm_sta->disable_tx == disable) {
3095 spin_unlock_bh(&mvm_sta->lock);
3096 return;
3097 }
3098
3099 mvm_sta->disable_tx = disable;
3100
3101 /*
0d365ae5
SS		 3102 * Tell mac80211 to start/stop queuing tx for this station,
3103 * but don't stop queuing if there are still pending frames
003e5236
AO		 3104 * for this station.
3105 */
3106 if (disable || !atomic_read(&mvm->pending_frames[mvm_sta->sta_id]))
3107 ieee80211_sta_block_awake(mvm->hw, sta, disable);
3108
3109 iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable);
3110
3111 spin_unlock_bh(&mvm_sta->lock);
3112}
3113
3114void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm,
3115 struct iwl_mvm_vif *mvmvif,
3116 bool disable)
3117{
3118 struct ieee80211_sta *sta;
3119 struct iwl_mvm_sta *mvm_sta;
3120 int i;
3121
3122 lockdep_assert_held(&mvm->mutex);
3123
3124 /* Block/unblock all the stations of the given mvmvif */
3125 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3126 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3127 lockdep_is_held(&mvm->mutex));
3128 if (IS_ERR_OR_NULL(sta))
3129 continue;
3130
3131 mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3132 if (mvm_sta->mac_id_n_color !=
3133 FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color))
3134 continue;
3135
3136 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable);
3137 }
3138}
dc88b4ba
LC		 3139
3140void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
3141{
3142 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3143 struct iwl_mvm_sta *mvmsta;
3144
3145 rcu_read_lock();
3146
3147 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id);
3148
3149 if (!WARN_ON(!mvmsta))
3150 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true);
3151
3152 rcu_read_unlock();
3153}
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