1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /*
3 * Copyright (C) 2012-2015, 2018-2025 Intel Corporation
4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
5 * Copyright (C) 2016-2017 Intel Deutschland GmbH
6 */
7 #include <net/mac80211.h>
8
9 #include "mvm.h"
10 #include "sta.h"
11 #include "rs.h"
12
13 /*
14 * New version of ADD_STA_sta command added new fields at the end of the
15 * structure, so sending the size of the relevant API's structure is enough to
16 * support both API versions.
17 */
iwl_mvm_add_sta_cmd_size(struct iwl_mvm * mvm)18 static inline int iwl_mvm_add_sta_cmd_size(struct iwl_mvm *mvm)
19 {
20 if (iwl_mvm_has_new_rx_api(mvm) ||
21 fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
22 return sizeof(struct iwl_mvm_add_sta_cmd);
23 else
24 return sizeof(struct iwl_mvm_add_sta_cmd_v7);
25 }
26
iwl_mvm_find_free_sta_id(struct iwl_mvm * mvm,enum nl80211_iftype iftype)27 int iwl_mvm_find_free_sta_id(struct iwl_mvm *mvm, enum nl80211_iftype iftype)
28 {
29 int sta_id;
30 u32 reserved_ids = 0;
31
32 BUILD_BUG_ON(IWL_STATION_COUNT_MAX > 32);
33 WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status));
34
35 lockdep_assert_held(&mvm->mutex);
36
37 /* d0i3/d3 assumes the AP's sta_id (of sta vif) is 0. reserve it. */
38 if (iftype != NL80211_IFTYPE_STATION)
39 reserved_ids = BIT(0);
40
41 /* Don't take rcu_read_lock() since we are protected by mvm->mutex */
42 for (sta_id = 0; sta_id < mvm->fw->ucode_capa.num_stations; sta_id++) {
43 if (BIT(sta_id) & reserved_ids)
44 continue;
45
46 if (!rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
47 lockdep_is_held(&mvm->mutex)))
48 return sta_id;
49 }
50 return IWL_INVALID_STA;
51 }
52
53 /* Calculate the ampdu density and max size */
iwl_mvm_get_sta_ampdu_dens(struct ieee80211_link_sta * link_sta,struct ieee80211_bss_conf * link_conf,u32 * _agg_size)54 u32 iwl_mvm_get_sta_ampdu_dens(struct ieee80211_link_sta *link_sta,
55 struct ieee80211_bss_conf *link_conf,
56 u32 *_agg_size)
57 {
58 u32 agg_size = 0, mpdu_dens = 0;
59
60 if (WARN_ON(!link_sta))
61 return 0;
62
63 /* Note that we always use only legacy & highest supported PPDUs, so
64 * of Draft P802.11be D.30 Table 10-12a--Fields used for calculating
65 * the maximum A-MPDU size of various PPDU types in different bands,
66 * we only need to worry about the highest supported PPDU type here.
67 */
68
69 if (link_sta->ht_cap.ht_supported) {
70 agg_size = link_sta->ht_cap.ampdu_factor;
71 mpdu_dens = link_sta->ht_cap.ampdu_density;
72 }
73
74 if (link_conf->chanreq.oper.chan->band == NL80211_BAND_6GHZ) {
75 /* overwrite HT values on 6 GHz */
76 mpdu_dens = le16_get_bits(link_sta->he_6ghz_capa.capa,
77 IEEE80211_HE_6GHZ_CAP_MIN_MPDU_START);
78 agg_size = le16_get_bits(link_sta->he_6ghz_capa.capa,
79 IEEE80211_HE_6GHZ_CAP_MAX_AMPDU_LEN_EXP);
80 } else if (link_sta->vht_cap.vht_supported) {
81 /* if VHT supported overwrite HT value */
82 agg_size = u32_get_bits(link_sta->vht_cap.cap,
83 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK);
84 }
85
86 /* D6.0 10.12.2 A-MPDU length limit rules
87 * A STA indicates the maximum length of the A-MPDU preEOF padding
88 * that it can receive in an HE PPDU in the Maximum A-MPDU Length
89 * Exponent field in its HT Capabilities, VHT Capabilities,
90 * and HE 6 GHz Band Capabilities elements (if present) and the
91 * Maximum AMPDU Length Exponent Extension field in its HE
92 * Capabilities element
93 */
94 if (link_sta->he_cap.has_he)
95 agg_size +=
96 u8_get_bits(link_sta->he_cap.he_cap_elem.mac_cap_info[3],
97 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_MASK);
98
99 if (link_sta->eht_cap.has_eht)
100 agg_size += u8_get_bits(link_sta->eht_cap.eht_cap_elem.mac_cap_info[1],
101 IEEE80211_EHT_MAC_CAP1_MAX_AMPDU_LEN_MASK);
102
103 /* Limit to max A-MPDU supported by FW */
104 agg_size = min_t(u32, agg_size,
105 STA_FLG_MAX_AGG_SIZE_4M >> STA_FLG_MAX_AGG_SIZE_SHIFT);
106
107 *_agg_size = agg_size;
108 return mpdu_dens;
109 }
110
iwl_mvm_get_sta_uapsd_acs(struct ieee80211_sta * sta)111 u8 iwl_mvm_get_sta_uapsd_acs(struct ieee80211_sta *sta)
112 {
113 u8 uapsd_acs = 0;
114
115 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK)
116 uapsd_acs |= BIT(AC_BK);
117 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE)
118 uapsd_acs |= BIT(AC_BE);
119 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI)
120 uapsd_acs |= BIT(AC_VI);
121 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)
122 uapsd_acs |= BIT(AC_VO);
123
124 return uapsd_acs | uapsd_acs << 4;
125 }
126
127 /* send station add/update command to firmware */
iwl_mvm_sta_send_to_fw(struct iwl_mvm * mvm,struct ieee80211_sta * sta,bool update,unsigned int flags)128 int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
129 bool update, unsigned int flags)
130 {
131 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
132 struct iwl_mvm_add_sta_cmd add_sta_cmd = {
133 .sta_id = mvm_sta->deflink.sta_id,
134 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color),
135 .add_modify = update ? 1 : 0,
136 .station_flags_msk = cpu_to_le32(STA_FLG_FAT_EN_MSK |
137 STA_FLG_MIMO_EN_MSK |
138 STA_FLG_RTS_MIMO_PROT),
139 .tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg),
140 };
141 int ret;
142 u32 status;
143 u32 agg_size = 0, mpdu_dens = 0;
144
145 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
146 add_sta_cmd.station_type = mvm_sta->sta_type;
147
148 if (!update || (flags & STA_MODIFY_QUEUES)) {
149 memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN);
150
151 if (!iwl_mvm_has_new_tx_api(mvm)) {
152 add_sta_cmd.tfd_queue_msk =
153 cpu_to_le32(mvm_sta->tfd_queue_msk);
154
155 if (flags & STA_MODIFY_QUEUES)
156 add_sta_cmd.modify_mask |= STA_MODIFY_QUEUES;
157 } else {
158 WARN_ON(flags & STA_MODIFY_QUEUES);
159 }
160 }
161
162 switch (sta->deflink.bandwidth) {
163 case IEEE80211_STA_RX_BW_320:
164 case IEEE80211_STA_RX_BW_160:
165 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ);
166 fallthrough;
167 case IEEE80211_STA_RX_BW_80:
168 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ);
169 fallthrough;
170 case IEEE80211_STA_RX_BW_40:
171 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ);
172 fallthrough;
173 case IEEE80211_STA_RX_BW_20:
174 if (sta->deflink.ht_cap.ht_supported)
175 add_sta_cmd.station_flags |=
176 cpu_to_le32(STA_FLG_FAT_EN_20MHZ);
177 break;
178 }
179
180 switch (sta->deflink.rx_nss) {
181 case 1:
182 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO);
183 break;
184 case 2:
185 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2);
186 break;
187 case 3 ... 8:
188 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3);
189 break;
190 }
191
192 switch (sta->deflink.smps_mode) {
193 case IEEE80211_SMPS_AUTOMATIC:
194 case IEEE80211_SMPS_NUM_MODES:
195 WARN_ON(1);
196 break;
197 case IEEE80211_SMPS_STATIC:
198 /* override NSS */
199 add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK);
200 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO);
201 break;
202 case IEEE80211_SMPS_DYNAMIC:
203 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT);
204 break;
205 case IEEE80211_SMPS_OFF:
206 /* nothing */
207 break;
208 }
209
210 if (sta->deflink.ht_cap.ht_supported ||
211 mvm_sta->vif->bss_conf.chanreq.oper.chan->band == NL80211_BAND_6GHZ)
212 add_sta_cmd.station_flags_msk |=
213 cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK |
214 STA_FLG_AGG_MPDU_DENS_MSK);
215
216 mpdu_dens = iwl_mvm_get_sta_ampdu_dens(&sta->deflink,
217 &mvm_sta->vif->bss_conf,
218 &agg_size);
219 add_sta_cmd.station_flags |=
220 cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT);
221 add_sta_cmd.station_flags |=
222 cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT);
223
224 if (mvm_sta->sta_state >= IEEE80211_STA_ASSOC)
225 add_sta_cmd.assoc_id = cpu_to_le16(sta->aid);
226
227 if (sta->wme) {
228 add_sta_cmd.modify_mask |= STA_MODIFY_UAPSD_ACS;
229 add_sta_cmd.uapsd_acs = iwl_mvm_get_sta_uapsd_acs(sta);
230 add_sta_cmd.sp_length = sta->max_sp ? sta->max_sp * 2 : 128;
231 }
232
233 status = ADD_STA_SUCCESS;
234 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
235 iwl_mvm_add_sta_cmd_size(mvm),
236 &add_sta_cmd, &status);
237 if (ret)
238 return ret;
239
240 switch (status & IWL_ADD_STA_STATUS_MASK) {
241 case ADD_STA_SUCCESS:
242 IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n");
243 break;
244 default:
245 ret = -EIO;
246 IWL_ERR(mvm, "ADD_STA failed\n");
247 break;
248 }
249
250 return ret;
251 }
252
iwl_mvm_rx_agg_session_expired(struct timer_list * t)253 static void iwl_mvm_rx_agg_session_expired(struct timer_list *t)
254 {
255 struct iwl_mvm_baid_data *data =
256 timer_container_of(data, t, session_timer);
257 struct iwl_mvm_baid_data __rcu **rcu_ptr = data->rcu_ptr;
258 struct iwl_mvm_baid_data *ba_data;
259 struct ieee80211_sta *sta;
260 struct iwl_mvm_sta *mvm_sta;
261 unsigned long timeout;
262 unsigned int sta_id;
263
264 rcu_read_lock();
265
266 ba_data = rcu_dereference(*rcu_ptr);
267
268 if (WARN_ON(!ba_data))
269 goto unlock;
270
271 if (!ba_data->timeout)
272 goto unlock;
273
274 timeout = ba_data->last_rx + TU_TO_JIFFIES(ba_data->timeout * 2);
275 if (time_is_after_jiffies(timeout)) {
276 mod_timer(&ba_data->session_timer, timeout);
277 goto unlock;
278 }
279
280 /* Timer expired */
281 sta_id = ffs(ba_data->sta_mask) - 1; /* don't care which one */
282 sta = rcu_dereference(ba_data->mvm->fw_id_to_mac_id[sta_id]);
283
284 /*
285 * sta should be valid unless the following happens:
286 * The firmware asserts which triggers a reconfig flow, but
287 * the reconfig fails before we set the pointer to sta into
288 * the fw_id_to_mac_id pointer table. Mac80211 can't stop
289 * A-MDPU and hence the timer continues to run. Then, the
290 * timer expires and sta is NULL.
291 */
292 if (IS_ERR_OR_NULL(sta))
293 goto unlock;
294
295 mvm_sta = iwl_mvm_sta_from_mac80211(sta);
296 ieee80211_rx_ba_timer_expired(mvm_sta->vif,
297 sta->addr, ba_data->tid);
298 unlock:
299 rcu_read_unlock();
300 }
301
302 /* Disable aggregations for a bitmap of TIDs for a given station */
iwl_mvm_invalidate_sta_queue(struct iwl_mvm * mvm,int queue,unsigned long disable_agg_tids,bool remove_queue)303 static int iwl_mvm_invalidate_sta_queue(struct iwl_mvm *mvm, int queue,
304 unsigned long disable_agg_tids,
305 bool remove_queue)
306 {
307 struct iwl_mvm_add_sta_cmd cmd = {};
308 struct ieee80211_sta *sta;
309 struct iwl_mvm_sta *mvmsta;
310 u32 status;
311 u8 sta_id;
312
313 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
314 return -EINVAL;
315
316 sta_id = mvm->queue_info[queue].ra_sta_id;
317
318 rcu_read_lock();
319
320 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
321
322 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) {
323 rcu_read_unlock();
324 return -EINVAL;
325 }
326
327 mvmsta = iwl_mvm_sta_from_mac80211(sta);
328
329 mvmsta->tid_disable_agg |= disable_agg_tids;
330
331 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color);
332 cmd.sta_id = mvmsta->deflink.sta_id;
333 cmd.add_modify = STA_MODE_MODIFY;
334 cmd.modify_mask = STA_MODIFY_QUEUES;
335 if (disable_agg_tids)
336 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX;
337 if (remove_queue)
338 cmd.modify_mask |= STA_MODIFY_QUEUE_REMOVAL;
339 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk);
340 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg);
341
342 rcu_read_unlock();
343
344 /* Notify FW of queue removal from the STA queues */
345 status = ADD_STA_SUCCESS;
346 return iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
347 iwl_mvm_add_sta_cmd_size(mvm),
348 &cmd, &status);
349 }
350
iwl_mvm_disable_txq(struct iwl_mvm * mvm,struct ieee80211_sta * sta,int sta_id,u16 * queueptr,u8 tid)351 static int iwl_mvm_disable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
352 int sta_id, u16 *queueptr, u8 tid)
353 {
354 int queue = *queueptr;
355 struct iwl_scd_txq_cfg_cmd cmd = {
356 .scd_queue = queue,
357 .action = SCD_CFG_DISABLE_QUEUE,
358 };
359 int ret;
360
361 lockdep_assert_held(&mvm->mutex);
362
363 if (iwl_mvm_has_new_tx_api(mvm)) {
364 if (mvm->sta_remove_requires_queue_remove) {
365 u32 cmd_id = WIDE_ID(DATA_PATH_GROUP,
366 SCD_QUEUE_CONFIG_CMD);
367 struct iwl_scd_queue_cfg_cmd remove_cmd = {
368 .operation = cpu_to_le32(IWL_SCD_QUEUE_REMOVE),
369 .u.remove.sta_mask = cpu_to_le32(BIT(sta_id)),
370 };
371
372 if (tid == IWL_MAX_TID_COUNT)
373 tid = IWL_MGMT_TID;
374
375 remove_cmd.u.remove.tid = cpu_to_le32(tid);
376
377 ret = iwl_mvm_send_cmd_pdu(mvm, cmd_id, 0,
378 sizeof(remove_cmd),
379 &remove_cmd);
380 } else {
381 ret = 0;
382 }
383
384 iwl_trans_txq_free(mvm->trans, queue);
385 *queueptr = IWL_MVM_INVALID_QUEUE;
386
387 return ret;
388 }
389
390 if (WARN_ON(mvm->queue_info[queue].tid_bitmap == 0))
391 return 0;
392
393 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid);
394
395 cmd.action = mvm->queue_info[queue].tid_bitmap ?
396 SCD_CFG_ENABLE_QUEUE : SCD_CFG_DISABLE_QUEUE;
397 if (cmd.action == SCD_CFG_DISABLE_QUEUE)
398 mvm->queue_info[queue].status = IWL_MVM_QUEUE_FREE;
399
400 IWL_DEBUG_TX_QUEUES(mvm,
401 "Disabling TXQ #%d tids=0x%x\n",
402 queue,
403 mvm->queue_info[queue].tid_bitmap);
404
405 /* If the queue is still enabled - nothing left to do in this func */
406 if (cmd.action == SCD_CFG_ENABLE_QUEUE)
407 return 0;
408
409 cmd.sta_id = mvm->queue_info[queue].ra_sta_id;
410 cmd.tid = mvm->queue_info[queue].txq_tid;
411
412 /* Make sure queue info is correct even though we overwrite it */
413 WARN(mvm->queue_info[queue].tid_bitmap,
414 "TXQ #%d info out-of-sync - tids=0x%x\n",
415 queue, mvm->queue_info[queue].tid_bitmap);
416
417 /* If we are here - the queue is freed and we can zero out these vals */
418 mvm->queue_info[queue].tid_bitmap = 0;
419
420 if (sta) {
421 struct iwl_mvm_txq *mvmtxq =
422 iwl_mvm_txq_from_tid(sta, tid);
423
424 spin_lock_bh(&mvm->add_stream_lock);
425 list_del_init(&mvmtxq->list);
426 clear_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state);
427 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE;
428 spin_unlock_bh(&mvm->add_stream_lock);
429 }
430
431 /* Regardless if this is a reserved TXQ for a STA - mark it as false */
432 mvm->queue_info[queue].reserved = false;
433
434 iwl_trans_txq_disable(mvm->trans, queue, false);
435 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0,
436 sizeof(struct iwl_scd_txq_cfg_cmd), &cmd);
437
438 if (ret)
439 IWL_ERR(mvm, "Failed to disable queue %d (ret=%d)\n",
440 queue, ret);
441 return ret;
442 }
443
iwl_mvm_get_queue_agg_tids(struct iwl_mvm * mvm,int queue)444 static int iwl_mvm_get_queue_agg_tids(struct iwl_mvm *mvm, int queue)
445 {
446 struct ieee80211_sta *sta;
447 struct iwl_mvm_sta *mvmsta;
448 unsigned long tid_bitmap;
449 unsigned long agg_tids = 0;
450 u8 sta_id;
451 int tid;
452
453 lockdep_assert_held(&mvm->mutex);
454
455 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
456 return -EINVAL;
457
458 sta_id = mvm->queue_info[queue].ra_sta_id;
459 tid_bitmap = mvm->queue_info[queue].tid_bitmap;
460
461 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
462 lockdep_is_held(&mvm->mutex));
463
464 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
465 return -EINVAL;
466
467 mvmsta = iwl_mvm_sta_from_mac80211(sta);
468
469 spin_lock_bh(&mvmsta->lock);
470 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
471 if (mvmsta->tid_data[tid].state == IWL_AGG_ON)
472 agg_tids |= BIT(tid);
473 }
474 spin_unlock_bh(&mvmsta->lock);
475
476 return agg_tids;
477 }
478
479 /*
480 * Remove a queue from a station's resources.
481 * Note that this only marks as free. It DOESN'T delete a BA agreement, and
482 * doesn't disable the queue
483 */
iwl_mvm_remove_sta_queue_marking(struct iwl_mvm * mvm,int queue)484 static int iwl_mvm_remove_sta_queue_marking(struct iwl_mvm *mvm, int queue)
485 {
486 struct ieee80211_sta *sta;
487 struct iwl_mvm_sta *mvmsta;
488 unsigned long tid_bitmap;
489 unsigned long disable_agg_tids = 0;
490 u8 sta_id;
491 int tid;
492
493 lockdep_assert_held(&mvm->mutex);
494
495 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
496 return -EINVAL;
497
498 sta_id = mvm->queue_info[queue].ra_sta_id;
499 tid_bitmap = mvm->queue_info[queue].tid_bitmap;
500
501 rcu_read_lock();
502
503 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
504
505 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) {
506 rcu_read_unlock();
507 return 0;
508 }
509
510 mvmsta = iwl_mvm_sta_from_mac80211(sta);
511
512 spin_lock_bh(&mvmsta->lock);
513 /* Unmap MAC queues and TIDs from this queue */
514 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
515 struct iwl_mvm_txq *mvmtxq =
516 iwl_mvm_txq_from_tid(sta, tid);
517
518 if (mvmsta->tid_data[tid].state == IWL_AGG_ON)
519 disable_agg_tids |= BIT(tid);
520 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE;
521
522 spin_lock_bh(&mvm->add_stream_lock);
523 list_del_init(&mvmtxq->list);
524 clear_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state);
525 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE;
526 spin_unlock_bh(&mvm->add_stream_lock);
527 }
528
529 mvmsta->tfd_queue_msk &= ~BIT(queue); /* Don't use this queue anymore */
530 spin_unlock_bh(&mvmsta->lock);
531
532 rcu_read_unlock();
533
534 /*
535 * The TX path may have been using this TXQ_ID from the tid_data,
536 * so make sure it's no longer running so that we can safely reuse
537 * this TXQ later. We've set all the TIDs to IWL_MVM_INVALID_QUEUE
538 * above, but nothing guarantees we've stopped using them. Thus,
539 * without this, we could get to iwl_mvm_disable_txq() and remove
540 * the queue while still sending frames to it.
541 */
542 synchronize_net();
543
544 return disable_agg_tids;
545 }
546
iwl_mvm_free_inactive_queue(struct iwl_mvm * mvm,int queue,struct ieee80211_sta * old_sta,u8 new_sta_id)547 static int iwl_mvm_free_inactive_queue(struct iwl_mvm *mvm, int queue,
548 struct ieee80211_sta *old_sta,
549 u8 new_sta_id)
550 {
551 struct iwl_mvm_sta *mvmsta;
552 u8 sta_id, tid;
553 unsigned long disable_agg_tids = 0;
554 bool same_sta;
555 u16 queue_tmp = queue;
556 int ret;
557
558 lockdep_assert_held(&mvm->mutex);
559
560 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
561 return -EINVAL;
562
563 sta_id = mvm->queue_info[queue].ra_sta_id;
564 tid = mvm->queue_info[queue].txq_tid;
565
566 same_sta = sta_id == new_sta_id;
567
568 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id);
569 if (WARN_ON(!mvmsta))
570 return -EINVAL;
571
572 disable_agg_tids = iwl_mvm_remove_sta_queue_marking(mvm, queue);
573 /* Disable the queue */
574 if (disable_agg_tids)
575 iwl_mvm_invalidate_sta_queue(mvm, queue,
576 disable_agg_tids, false);
577
578 ret = iwl_mvm_disable_txq(mvm, old_sta, sta_id, &queue_tmp, tid);
579 if (ret) {
580 IWL_ERR(mvm,
581 "Failed to free inactive queue %d (ret=%d)\n",
582 queue, ret);
583
584 return ret;
585 }
586
587 /* If TXQ is allocated to another STA, update removal in FW */
588 if (!same_sta)
589 iwl_mvm_invalidate_sta_queue(mvm, queue, 0, true);
590
591 return 0;
592 }
593
iwl_mvm_get_shared_queue(struct iwl_mvm * mvm,unsigned long tfd_queue_mask,u8 ac)594 static int iwl_mvm_get_shared_queue(struct iwl_mvm *mvm,
595 unsigned long tfd_queue_mask, u8 ac)
596 {
597 int queue = 0;
598 u8 ac_to_queue[IEEE80211_NUM_ACS];
599 int i;
600
601 /*
602 * This protects us against grabbing a queue that's being reconfigured
603 * by the inactivity checker.
604 */
605 lockdep_assert_held(&mvm->mutex);
606
607 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
608 return -EINVAL;
609
610 memset(&ac_to_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(ac_to_queue));
611
612 /* See what ACs the existing queues for this STA have */
613 for_each_set_bit(i, &tfd_queue_mask, IWL_MVM_DQA_MAX_DATA_QUEUE) {
614 /* Only DATA queues can be shared */
615 if (i < IWL_MVM_DQA_MIN_DATA_QUEUE &&
616 i != IWL_MVM_DQA_BSS_CLIENT_QUEUE)
617 continue;
618
619 ac_to_queue[mvm->queue_info[i].mac80211_ac] = i;
620 }
621
622 /*
623 * The queue to share is chosen only from DATA queues as follows (in
624 * descending priority):
625 * 1. An AC_BE queue
626 * 2. Same AC queue
627 * 3. Highest AC queue that is lower than new AC
628 * 4. Any existing AC (there always is at least 1 DATA queue)
629 */
630
631 /* Priority 1: An AC_BE queue */
632 if (ac_to_queue[IEEE80211_AC_BE] != IEEE80211_INVAL_HW_QUEUE)
633 queue = ac_to_queue[IEEE80211_AC_BE];
634 /* Priority 2: Same AC queue */
635 else if (ac_to_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
636 queue = ac_to_queue[ac];
637 /* Priority 3a: If new AC is VO and VI exists - use VI */
638 else if (ac == IEEE80211_AC_VO &&
639 ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE)
640 queue = ac_to_queue[IEEE80211_AC_VI];
641 /* Priority 3b: No BE so only AC less than the new one is BK */
642 else if (ac_to_queue[IEEE80211_AC_BK] != IEEE80211_INVAL_HW_QUEUE)
643 queue = ac_to_queue[IEEE80211_AC_BK];
644 /* Priority 4a: No BE nor BK - use VI if exists */
645 else if (ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE)
646 queue = ac_to_queue[IEEE80211_AC_VI];
647 /* Priority 4b: No BE, BK nor VI - use VO if exists */
648 else if (ac_to_queue[IEEE80211_AC_VO] != IEEE80211_INVAL_HW_QUEUE)
649 queue = ac_to_queue[IEEE80211_AC_VO];
650
651 /* Make sure queue found (or not) is legal */
652 if (!iwl_mvm_is_dqa_data_queue(mvm, queue) &&
653 !iwl_mvm_is_dqa_mgmt_queue(mvm, queue) &&
654 (queue != IWL_MVM_DQA_BSS_CLIENT_QUEUE)) {
655 IWL_ERR(mvm, "No DATA queues available to share\n");
656 return -ENOSPC;
657 }
658
659 return queue;
660 }
661
662 /* Re-configure the SCD for a queue that has already been configured */
iwl_mvm_reconfig_scd(struct iwl_mvm * mvm,int queue,int fifo,int sta_id,int tid,int frame_limit,u16 ssn)663 static int iwl_mvm_reconfig_scd(struct iwl_mvm *mvm, int queue, int fifo,
664 int sta_id, int tid, int frame_limit, u16 ssn)
665 {
666 struct iwl_scd_txq_cfg_cmd cmd = {
667 .scd_queue = queue,
668 .action = SCD_CFG_ENABLE_QUEUE,
669 .window = frame_limit,
670 .sta_id = sta_id,
671 .ssn = cpu_to_le16(ssn),
672 .tx_fifo = fifo,
673 .aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE ||
674 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE),
675 .tid = tid,
676 };
677 int ret;
678
679 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
680 return -EINVAL;
681
682 if (WARN(mvm->queue_info[queue].tid_bitmap == 0,
683 "Trying to reconfig unallocated queue %d\n", queue))
684 return -ENXIO;
685
686 IWL_DEBUG_TX_QUEUES(mvm, "Reconfig SCD for TXQ #%d\n", queue);
687
688 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd);
689 WARN_ONCE(ret, "Failed to re-configure queue %d on FIFO %d, ret=%d\n",
690 queue, fifo, ret);
691
692 return ret;
693 }
694
695 /*
696 * If a given queue has a higher AC than the TID stream that is being compared
697 * to, the queue needs to be redirected to the lower AC. This function does that
698 * in such a case, otherwise - if no redirection required - it does nothing,
699 * unless the %force param is true.
700 */
iwl_mvm_redirect_queue(struct iwl_mvm * mvm,int queue,int tid,int ac,int ssn,unsigned int wdg_timeout,bool force,struct iwl_mvm_txq * txq)701 static int iwl_mvm_redirect_queue(struct iwl_mvm *mvm, int queue, int tid,
702 int ac, int ssn, unsigned int wdg_timeout,
703 bool force, struct iwl_mvm_txq *txq)
704 {
705 struct iwl_scd_txq_cfg_cmd cmd = {
706 .scd_queue = queue,
707 .action = SCD_CFG_DISABLE_QUEUE,
708 };
709 bool shared_queue;
710 int ret;
711
712 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
713 return -EINVAL;
714
715 /*
716 * If the AC is lower than current one - FIFO needs to be redirected to
717 * the lowest one of the streams in the queue. Check if this is needed
718 * here.
719 * Notice that the enum ieee80211_ac_numbers is "flipped", so BK is with
720 * value 3 and VO with value 0, so to check if ac X is lower than ac Y
721 * we need to check if the numerical value of X is LARGER than of Y.
722 */
723 if (ac <= mvm->queue_info[queue].mac80211_ac && !force) {
724 IWL_DEBUG_TX_QUEUES(mvm,
725 "No redirection needed on TXQ #%d\n",
726 queue);
727 return 0;
728 }
729
730 cmd.sta_id = mvm->queue_info[queue].ra_sta_id;
731 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[mvm->queue_info[queue].mac80211_ac];
732 cmd.tid = mvm->queue_info[queue].txq_tid;
733 shared_queue = hweight16(mvm->queue_info[queue].tid_bitmap) > 1;
734
735 IWL_DEBUG_TX_QUEUES(mvm, "Redirecting TXQ #%d to FIFO #%d\n",
736 queue, iwl_mvm_ac_to_tx_fifo[ac]);
737
738 /* Stop the queue and wait for it to empty */
739 set_bit(IWL_MVM_TXQ_STATE_STOP_REDIRECT, &txq->state);
740
741 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(queue));
742 if (ret) {
743 IWL_ERR(mvm, "Error draining queue %d before reconfig\n",
744 queue);
745 ret = -EIO;
746 goto out;
747 }
748
749 /* Before redirecting the queue we need to de-activate it */
750 iwl_trans_txq_disable(mvm->trans, queue, false);
751 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd);
752 if (ret)
753 IWL_ERR(mvm, "Failed SCD disable TXQ %d (ret=%d)\n", queue,
754 ret);
755
756 /* Make sure the SCD wrptr is correctly set before reconfiguring */
757 iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL, wdg_timeout);
758
759 /* Update the TID "owner" of the queue */
760 mvm->queue_info[queue].txq_tid = tid;
761
762 /* TODO: Work-around SCD bug when moving back by multiples of 0x40 */
763
764 /* Redirect to lower AC */
765 iwl_mvm_reconfig_scd(mvm, queue, iwl_mvm_ac_to_tx_fifo[ac],
766 cmd.sta_id, tid, IWL_FRAME_LIMIT, ssn);
767
768 /* Update AC marking of the queue */
769 mvm->queue_info[queue].mac80211_ac = ac;
770
771 /*
772 * Mark queue as shared in transport if shared
773 * Note this has to be done after queue enablement because enablement
774 * can also set this value, and there is no indication there to shared
775 * queues
776 */
777 if (shared_queue)
778 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true);
779
780 out:
781 /* Continue using the queue */
782 clear_bit(IWL_MVM_TXQ_STATE_STOP_REDIRECT, &txq->state);
783
784 return ret;
785 }
786
iwl_mvm_find_free_queue(struct iwl_mvm * mvm,u8 sta_id,u8 minq,u8 maxq)787 static int iwl_mvm_find_free_queue(struct iwl_mvm *mvm, u8 sta_id,
788 u8 minq, u8 maxq)
789 {
790 int i;
791
792 lockdep_assert_held(&mvm->mutex);
793
794 if (WARN(maxq >= mvm->trans->mac_cfg->base->num_of_queues,
795 "max queue %d >= num_of_queues (%d)", maxq,
796 mvm->trans->mac_cfg->base->num_of_queues))
797 maxq = mvm->trans->mac_cfg->base->num_of_queues - 1;
798
799 /* This should not be hit with new TX path */
800 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
801 return -ENOSPC;
802
803 /* Start by looking for a free queue */
804 for (i = minq; i <= maxq; i++)
805 if (mvm->queue_info[i].tid_bitmap == 0 &&
806 mvm->queue_info[i].status == IWL_MVM_QUEUE_FREE)
807 return i;
808
809 return -ENOSPC;
810 }
811
iwl_mvm_get_queue_size(struct ieee80211_sta * sta)812 static int iwl_mvm_get_queue_size(struct ieee80211_sta *sta)
813 {
814 int max_size = IWL_DEFAULT_QUEUE_SIZE;
815 unsigned int link_id;
816
817 /* this queue isn't used for traffic (cab_queue) */
818 if (!sta)
819 return IWL_MGMT_QUEUE_SIZE;
820
821 rcu_read_lock();
822
823 for (link_id = 0; link_id < ARRAY_SIZE(sta->link); link_id++) {
824 struct ieee80211_link_sta *link =
825 rcu_dereference(sta->link[link_id]);
826
827 if (!link)
828 continue;
829
830 /* support for 512 ba size */
831 if (link->eht_cap.has_eht &&
832 max_size < IWL_DEFAULT_QUEUE_SIZE_EHT)
833 max_size = IWL_DEFAULT_QUEUE_SIZE_EHT;
834
835 /* support for 256 ba size */
836 if (link->he_cap.has_he &&
837 max_size < IWL_DEFAULT_QUEUE_SIZE_HE)
838 max_size = IWL_DEFAULT_QUEUE_SIZE_HE;
839 }
840
841 rcu_read_unlock();
842 return max_size;
843 }
844
iwl_mvm_tvqm_enable_txq(struct iwl_mvm * mvm,struct ieee80211_sta * sta,u8 sta_id,u8 tid,unsigned int timeout)845 int iwl_mvm_tvqm_enable_txq(struct iwl_mvm *mvm,
846 struct ieee80211_sta *sta,
847 u8 sta_id, u8 tid, unsigned int timeout)
848 {
849 int queue, size;
850 u32 sta_mask = 0;
851
852 if (tid == IWL_MAX_TID_COUNT) {
853 tid = IWL_MGMT_TID;
854 size = max_t(u32, IWL_MGMT_QUEUE_SIZE,
855 mvm->trans->mac_cfg->base->min_txq_size);
856 } else {
857 size = iwl_mvm_get_queue_size(sta);
858 }
859
860 if (sta) {
861 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
862 struct ieee80211_link_sta *link_sta;
863 unsigned int link_id;
864
865 rcu_read_lock();
866 for_each_sta_active_link(mvmsta->vif, sta, link_sta, link_id) {
867 struct iwl_mvm_link_sta *link =
868 rcu_dereference_protected(mvmsta->link[link_id],
869 lockdep_is_held(&mvm->mutex));
870
871 if (!link)
872 continue;
873
874 sta_mask |= BIT(link->sta_id);
875 }
876 rcu_read_unlock();
877 } else {
878 sta_mask |= BIT(sta_id);
879 }
880
881 if (!sta_mask)
882 return -EINVAL;
883
884 queue = iwl_trans_txq_alloc(mvm->trans, 0, sta_mask,
885 tid, size, timeout);
886
887 if (queue >= 0)
888 IWL_DEBUG_TX_QUEUES(mvm,
889 "Enabling TXQ #%d for sta mask 0x%x tid %d\n",
890 queue, sta_mask, tid);
891
892 return queue;
893 }
894
iwl_mvm_sta_alloc_queue_tvqm(struct iwl_mvm * mvm,struct ieee80211_sta * sta,u8 ac,int tid)895 static int iwl_mvm_sta_alloc_queue_tvqm(struct iwl_mvm *mvm,
896 struct ieee80211_sta *sta, u8 ac,
897 int tid)
898 {
899 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
900 struct iwl_mvm_txq *mvmtxq =
901 iwl_mvm_txq_from_tid(sta, tid);
902 unsigned int wdg_timeout =
903 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif);
904 int queue = -1;
905
906 lockdep_assert_held(&mvm->mutex);
907
908 IWL_DEBUG_TX_QUEUES(mvm,
909 "Allocating queue for sta %d on tid %d\n",
910 mvmsta->deflink.sta_id, tid);
911 queue = iwl_mvm_tvqm_enable_txq(mvm, sta, mvmsta->deflink.sta_id,
912 tid, wdg_timeout);
913 if (queue < 0)
914 return queue;
915
916 mvmtxq->txq_id = queue;
917 mvm->tvqm_info[queue].txq_tid = tid;
918 mvm->tvqm_info[queue].sta_id = mvmsta->deflink.sta_id;
919
920 IWL_DEBUG_TX_QUEUES(mvm, "Allocated queue is %d\n", queue);
921
922 spin_lock_bh(&mvmsta->lock);
923 mvmsta->tid_data[tid].txq_id = queue;
924 spin_unlock_bh(&mvmsta->lock);
925
926 return 0;
927 }
928
iwl_mvm_update_txq_mapping(struct iwl_mvm * mvm,struct ieee80211_sta * sta,int queue,u8 sta_id,u8 tid)929 static bool iwl_mvm_update_txq_mapping(struct iwl_mvm *mvm,
930 struct ieee80211_sta *sta,
931 int queue, u8 sta_id, u8 tid)
932 {
933 bool enable_queue = true;
934
935 /* Make sure this TID isn't already enabled */
936 if (mvm->queue_info[queue].tid_bitmap & BIT(tid)) {
937 IWL_ERR(mvm, "Trying to enable TXQ %d with existing TID %d\n",
938 queue, tid);
939 return false;
940 }
941
942 /* Update mappings and refcounts */
943 if (mvm->queue_info[queue].tid_bitmap)
944 enable_queue = false;
945
946 mvm->queue_info[queue].tid_bitmap |= BIT(tid);
947 mvm->queue_info[queue].ra_sta_id = sta_id;
948
949 if (enable_queue) {
950 if (tid != IWL_MAX_TID_COUNT)
951 mvm->queue_info[queue].mac80211_ac =
952 tid_to_mac80211_ac[tid];
953 else
954 mvm->queue_info[queue].mac80211_ac = IEEE80211_AC_VO;
955
956 mvm->queue_info[queue].txq_tid = tid;
957 }
958
959 if (sta) {
960 struct iwl_mvm_txq *mvmtxq =
961 iwl_mvm_txq_from_tid(sta, tid);
962
963 mvmtxq->txq_id = queue;
964 }
965
966 IWL_DEBUG_TX_QUEUES(mvm,
967 "Enabling TXQ #%d tids=0x%x\n",
968 queue, mvm->queue_info[queue].tid_bitmap);
969
970 return enable_queue;
971 }
972
iwl_mvm_enable_txq(struct iwl_mvm * mvm,struct ieee80211_sta * sta,int queue,u16 ssn,const struct iwl_trans_txq_scd_cfg * cfg,unsigned int wdg_timeout)973 static bool iwl_mvm_enable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
974 int queue, u16 ssn,
975 const struct iwl_trans_txq_scd_cfg *cfg,
976 unsigned int wdg_timeout)
977 {
978 struct iwl_scd_txq_cfg_cmd cmd = {
979 .scd_queue = queue,
980 .action = SCD_CFG_ENABLE_QUEUE,
981 .window = cfg->frame_limit,
982 .sta_id = cfg->sta_id,
983 .ssn = cpu_to_le16(ssn),
984 .tx_fifo = cfg->fifo,
985 .aggregate = cfg->aggregate,
986 .tid = cfg->tid,
987 };
988 bool inc_ssn;
989
990 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
991 return false;
992
993 /* Send the enabling command if we need to */
994 if (!iwl_mvm_update_txq_mapping(mvm, sta, queue, cfg->sta_id, cfg->tid))
995 return false;
996
997 inc_ssn = iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn,
998 NULL, wdg_timeout);
999 if (inc_ssn)
1000 le16_add_cpu(&cmd.ssn, 1);
1001
1002 WARN(iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd),
1003 "Failed to configure queue %d on FIFO %d\n", queue, cfg->fifo);
1004
1005 return inc_ssn;
1006 }
1007
iwl_mvm_change_queue_tid(struct iwl_mvm * mvm,int queue)1008 static void iwl_mvm_change_queue_tid(struct iwl_mvm *mvm, int queue)
1009 {
1010 struct iwl_scd_txq_cfg_cmd cmd = {
1011 .scd_queue = queue,
1012 .action = SCD_CFG_UPDATE_QUEUE_TID,
1013 };
1014 int tid;
1015 unsigned long tid_bitmap;
1016 int ret;
1017
1018 lockdep_assert_held(&mvm->mutex);
1019
1020 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
1021 return;
1022
1023 tid_bitmap = mvm->queue_info[queue].tid_bitmap;
1024
1025 if (WARN(!tid_bitmap, "TXQ %d has no tids assigned to it\n", queue))
1026 return;
1027
1028 /* Find any TID for queue */
1029 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1);
1030 cmd.tid = tid;
1031 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]];
1032
1033 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd);
1034 if (ret) {
1035 IWL_ERR(mvm, "Failed to update owner of TXQ %d (ret=%d)\n",
1036 queue, ret);
1037 return;
1038 }
1039
1040 mvm->queue_info[queue].txq_tid = tid;
1041 IWL_DEBUG_TX_QUEUES(mvm, "Changed TXQ %d ownership to tid %d\n",
1042 queue, tid);
1043 }
1044
iwl_mvm_unshare_queue(struct iwl_mvm * mvm,int queue)1045 static void iwl_mvm_unshare_queue(struct iwl_mvm *mvm, int queue)
1046 {
1047 struct ieee80211_sta *sta;
1048 struct iwl_mvm_sta *mvmsta;
1049 u8 sta_id;
1050 int tid = -1;
1051 unsigned long tid_bitmap;
1052 unsigned int wdg_timeout;
1053 int ssn;
1054 int ret = true;
1055
1056 /* queue sharing is disabled on new TX path */
1057 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
1058 return;
1059
1060 lockdep_assert_held(&mvm->mutex);
1061
1062 sta_id = mvm->queue_info[queue].ra_sta_id;
1063 tid_bitmap = mvm->queue_info[queue].tid_bitmap;
1064
1065 /* Find TID for queue, and make sure it is the only one on the queue */
1066 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1);
1067 if (tid_bitmap != BIT(tid)) {
1068 IWL_ERR(mvm, "Failed to unshare q %d, active tids=0x%lx\n",
1069 queue, tid_bitmap);
1070 return;
1071 }
1072
1073 IWL_DEBUG_TX_QUEUES(mvm, "Unsharing TXQ %d, keeping tid %d\n", queue,
1074 tid);
1075
1076 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1077 lockdep_is_held(&mvm->mutex));
1078
1079 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
1080 return;
1081
1082 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1083 wdg_timeout = iwl_mvm_get_wd_timeout(mvm, mvmsta->vif);
1084
1085 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number);
1086
1087 ret = iwl_mvm_redirect_queue(mvm, queue, tid,
1088 tid_to_mac80211_ac[tid], ssn,
1089 wdg_timeout, true,
1090 iwl_mvm_txq_from_tid(sta, tid));
1091 if (ret) {
1092 IWL_ERR(mvm, "Failed to redirect TXQ %d\n", queue);
1093 return;
1094 }
1095
1096 /* If aggs should be turned back on - do it */
1097 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) {
1098 struct iwl_mvm_add_sta_cmd cmd = {0};
1099
1100 mvmsta->tid_disable_agg &= ~BIT(tid);
1101
1102 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color);
1103 cmd.sta_id = mvmsta->deflink.sta_id;
1104 cmd.add_modify = STA_MODE_MODIFY;
1105 cmd.modify_mask = STA_MODIFY_TID_DISABLE_TX;
1106 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk);
1107 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg);
1108
1109 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
1110 iwl_mvm_add_sta_cmd_size(mvm), &cmd);
1111 if (!ret) {
1112 IWL_DEBUG_TX_QUEUES(mvm,
1113 "TXQ #%d is now aggregated again\n",
1114 queue);
1115
1116 /* Mark queue intenally as aggregating again */
1117 iwl_trans_txq_set_shared_mode(mvm->trans, queue, false);
1118 }
1119 }
1120
1121 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY;
1122 }
1123
1124 /*
1125 * Remove inactive TIDs of a given queue.
1126 * If all queue TIDs are inactive - mark the queue as inactive
1127 * If only some the queue TIDs are inactive - unmap them from the queue
1128 *
1129 * Returns %true if all TIDs were removed and the queue could be reused.
1130 */
iwl_mvm_remove_inactive_tids(struct iwl_mvm * mvm,struct iwl_mvm_sta * mvmsta,int queue,unsigned long tid_bitmap,unsigned long * unshare_queues,unsigned long * changetid_queues)1131 static bool iwl_mvm_remove_inactive_tids(struct iwl_mvm *mvm,
1132 struct iwl_mvm_sta *mvmsta, int queue,
1133 unsigned long tid_bitmap,
1134 unsigned long *unshare_queues,
1135 unsigned long *changetid_queues)
1136 {
1137 unsigned int tid;
1138
1139 lockdep_assert_held(&mvmsta->lock);
1140 lockdep_assert_held(&mvm->mutex);
1141
1142 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
1143 return false;
1144
1145 /* Go over all non-active TIDs, incl. IWL_MAX_TID_COUNT (for mgmt) */
1146 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
1147 /* If some TFDs are still queued - don't mark TID as inactive */
1148 if (iwl_mvm_tid_queued(mvm, &mvmsta->tid_data[tid]))
1149 tid_bitmap &= ~BIT(tid);
1150
1151 /* Don't mark as inactive any TID that has an active BA */
1152 if (mvmsta->tid_data[tid].state != IWL_AGG_OFF)
1153 tid_bitmap &= ~BIT(tid);
1154 }
1155
1156 /* If all TIDs in the queue are inactive - return it can be reused */
1157 if (tid_bitmap == mvm->queue_info[queue].tid_bitmap) {
1158 IWL_DEBUG_TX_QUEUES(mvm, "Queue %d is inactive\n", queue);
1159 return true;
1160 }
1161
1162 /*
1163 * If we are here, this is a shared queue and not all TIDs timed-out.
1164 * Remove the ones that did.
1165 */
1166 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
1167 u16 q_tid_bitmap;
1168
1169 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE;
1170 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid);
1171
1172 q_tid_bitmap = mvm->queue_info[queue].tid_bitmap;
1173
1174 /*
1175 * We need to take into account a situation in which a TXQ was
1176 * allocated to TID x, and then turned shared by adding TIDs y
1177 * and z. If TID x becomes inactive and is removed from the TXQ,
1178 * ownership must be given to one of the remaining TIDs.
1179 * This is mainly because if TID x continues - a new queue can't
1180 * be allocated for it as long as it is an owner of another TXQ.
1181 *
1182 * Mark this queue in the right bitmap, we'll send the command
1183 * to the firmware later.
1184 */
1185 if (!(q_tid_bitmap & BIT(mvm->queue_info[queue].txq_tid)))
1186 set_bit(queue, changetid_queues);
1187
1188 IWL_DEBUG_TX_QUEUES(mvm,
1189 "Removing inactive TID %d from shared Q:%d\n",
1190 tid, queue);
1191 }
1192
1193 IWL_DEBUG_TX_QUEUES(mvm,
1194 "TXQ #%d left with tid bitmap 0x%x\n", queue,
1195 mvm->queue_info[queue].tid_bitmap);
1196
1197 /*
1198 * There may be different TIDs with the same mac queues, so make
1199 * sure all TIDs have existing corresponding mac queues enabled
1200 */
1201 tid_bitmap = mvm->queue_info[queue].tid_bitmap;
1202
1203 /* If the queue is marked as shared - "unshare" it */
1204 if (hweight16(mvm->queue_info[queue].tid_bitmap) == 1 &&
1205 mvm->queue_info[queue].status == IWL_MVM_QUEUE_SHARED) {
1206 IWL_DEBUG_TX_QUEUES(mvm, "Marking Q:%d for reconfig\n",
1207 queue);
1208 set_bit(queue, unshare_queues);
1209 }
1210
1211 return false;
1212 }
1213
1214 /*
1215 * Check for inactivity - this includes checking if any queue
1216 * can be unshared and finding one (and only one) that can be
1217 * reused.
1218 * This function is also invoked as a sort of clean-up task,
1219 * in which case @alloc_for_sta is IWL_INVALID_STA.
1220 *
1221 * Returns the queue number, or -ENOSPC.
1222 */
iwl_mvm_inactivity_check(struct iwl_mvm * mvm,u8 alloc_for_sta)1223 static int iwl_mvm_inactivity_check(struct iwl_mvm *mvm, u8 alloc_for_sta)
1224 {
1225 unsigned long now = jiffies;
1226 unsigned long unshare_queues = 0;
1227 unsigned long changetid_queues = 0;
1228 int i, ret, free_queue = -ENOSPC;
1229 struct ieee80211_sta *queue_owner = NULL;
1230
1231 lockdep_assert_held(&mvm->mutex);
1232
1233 if (iwl_mvm_has_new_tx_api(mvm))
1234 return -ENOSPC;
1235
1236 rcu_read_lock();
1237
1238 /* we skip the CMD queue below by starting at 1 */
1239 BUILD_BUG_ON(IWL_MVM_DQA_CMD_QUEUE != 0);
1240
1241 for (i = 1; i < IWL_MAX_HW_QUEUES; i++) {
1242 struct ieee80211_sta *sta;
1243 struct iwl_mvm_sta *mvmsta;
1244 u8 sta_id;
1245 int tid;
1246 unsigned long inactive_tid_bitmap = 0;
1247 unsigned long queue_tid_bitmap;
1248
1249 queue_tid_bitmap = mvm->queue_info[i].tid_bitmap;
1250 if (!queue_tid_bitmap)
1251 continue;
1252
1253 /* If TXQ isn't in active use anyway - nothing to do here... */
1254 if (mvm->queue_info[i].status != IWL_MVM_QUEUE_READY &&
1255 mvm->queue_info[i].status != IWL_MVM_QUEUE_SHARED)
1256 continue;
1257
1258 /* Check to see if there are inactive TIDs on this queue */
1259 for_each_set_bit(tid, &queue_tid_bitmap,
1260 IWL_MAX_TID_COUNT + 1) {
1261 if (time_after(mvm->queue_info[i].last_frame_time[tid] +
1262 IWL_MVM_DQA_QUEUE_TIMEOUT, now))
1263 continue;
1264
1265 inactive_tid_bitmap |= BIT(tid);
1266 }
1267
1268 /* If all TIDs are active - finish check on this queue */
1269 if (!inactive_tid_bitmap)
1270 continue;
1271
1272 /*
1273 * If we are here - the queue hadn't been served recently and is
1274 * in use
1275 */
1276
1277 sta_id = mvm->queue_info[i].ra_sta_id;
1278 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
1279
1280 /*
1281 * If the STA doesn't exist anymore, it isn't an error. It could
1282 * be that it was removed since getting the queues, and in this
1283 * case it should've inactivated its queues anyway.
1284 */
1285 if (IS_ERR_OR_NULL(sta))
1286 continue;
1287
1288 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1289
1290 spin_lock_bh(&mvmsta->lock);
1291 ret = iwl_mvm_remove_inactive_tids(mvm, mvmsta, i,
1292 inactive_tid_bitmap,
1293 &unshare_queues,
1294 &changetid_queues);
1295 if (ret && free_queue < 0) {
1296 queue_owner = sta;
1297 free_queue = i;
1298 }
1299 /* only unlock sta lock - we still need the queue info lock */
1300 spin_unlock_bh(&mvmsta->lock);
1301 }
1302
1303
1304 /* Reconfigure queues requiring reconfiguation */
1305 for_each_set_bit(i, &unshare_queues, IWL_MAX_HW_QUEUES)
1306 iwl_mvm_unshare_queue(mvm, i);
1307 for_each_set_bit(i, &changetid_queues, IWL_MAX_HW_QUEUES)
1308 iwl_mvm_change_queue_tid(mvm, i);
1309
1310 rcu_read_unlock();
1311
1312 if (free_queue >= 0 && alloc_for_sta != IWL_INVALID_STA) {
1313 ret = iwl_mvm_free_inactive_queue(mvm, free_queue, queue_owner,
1314 alloc_for_sta);
1315 if (ret)
1316 return ret;
1317 }
1318
1319 return free_queue;
1320 }
1321
iwl_mvm_sta_alloc_queue(struct iwl_mvm * mvm,struct ieee80211_sta * sta,u8 ac,int tid)1322 static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm,
1323 struct ieee80211_sta *sta, u8 ac, int tid)
1324 {
1325 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1326 struct iwl_trans_txq_scd_cfg cfg = {
1327 .fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac),
1328 .sta_id = mvmsta->deflink.sta_id,
1329 .tid = tid,
1330 .frame_limit = IWL_FRAME_LIMIT,
1331 };
1332 unsigned int wdg_timeout =
1333 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif);
1334 int queue = -1;
1335 u16 queue_tmp;
1336 unsigned long disable_agg_tids = 0;
1337 enum iwl_mvm_agg_state queue_state;
1338 bool shared_queue = false, inc_ssn;
1339 int ssn;
1340 unsigned long tfd_queue_mask;
1341 int ret;
1342
1343 lockdep_assert_held(&mvm->mutex);
1344
1345 if (iwl_mvm_has_new_tx_api(mvm))
1346 return iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid);
1347
1348 spin_lock_bh(&mvmsta->lock);
1349 tfd_queue_mask = mvmsta->tfd_queue_msk;
1350 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number);
1351 spin_unlock_bh(&mvmsta->lock);
1352
1353 if (tid == IWL_MAX_TID_COUNT) {
1354 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id,
1355 IWL_MVM_DQA_MIN_MGMT_QUEUE,
1356 IWL_MVM_DQA_MAX_MGMT_QUEUE);
1357 if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE)
1358 IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n",
1359 queue);
1360
1361 /* If no such queue is found, we'll use a DATA queue instead */
1362 }
1363
1364 if ((queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) &&
1365 (mvm->queue_info[mvmsta->reserved_queue].status ==
1366 IWL_MVM_QUEUE_RESERVED)) {
1367 queue = mvmsta->reserved_queue;
1368 mvm->queue_info[queue].reserved = true;
1369 IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue);
1370 }
1371
1372 if (queue < 0)
1373 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id,
1374 IWL_MVM_DQA_MIN_DATA_QUEUE,
1375 IWL_MVM_DQA_MAX_DATA_QUEUE);
1376 if (queue < 0) {
1377 /* try harder - perhaps kill an inactive queue */
1378 queue = iwl_mvm_inactivity_check(mvm, mvmsta->deflink.sta_id);
1379 }
1380
1381 /* No free queue - we'll have to share */
1382 if (queue <= 0) {
1383 queue = iwl_mvm_get_shared_queue(mvm, tfd_queue_mask, ac);
1384 if (queue > 0) {
1385 shared_queue = true;
1386 mvm->queue_info[queue].status = IWL_MVM_QUEUE_SHARED;
1387 }
1388 }
1389
1390 /*
1391 * Mark TXQ as ready, even though it hasn't been fully configured yet,
1392 * to make sure no one else takes it.
1393 * This will allow avoiding re-acquiring the lock at the end of the
1394 * configuration. On error we'll mark it back as free.
1395 */
1396 if (queue > 0 && !shared_queue)
1397 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY;
1398
1399 /* This shouldn't happen - out of queues */
1400 if (WARN_ON(queue <= 0)) {
1401 IWL_ERR(mvm, "No available queues for tid %d on sta_id %d\n",
1402 tid, cfg.sta_id);
1403 return queue;
1404 }
1405
1406 /*
1407 * Actual en/disablement of aggregations is through the ADD_STA HCMD,
1408 * but for configuring the SCD to send A-MPDUs we need to mark the queue
1409 * as aggregatable.
1410 * Mark all DATA queues as allowing to be aggregated at some point
1411 */
1412 cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE ||
1413 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE);
1414
1415 IWL_DEBUG_TX_QUEUES(mvm,
1416 "Allocating %squeue #%d to sta %d on tid %d\n",
1417 shared_queue ? "shared " : "", queue,
1418 mvmsta->deflink.sta_id, tid);
1419
1420 if (shared_queue) {
1421 /* Disable any open aggs on this queue */
1422 disable_agg_tids = iwl_mvm_get_queue_agg_tids(mvm, queue);
1423
1424 if (disable_agg_tids) {
1425 IWL_DEBUG_TX_QUEUES(mvm, "Disabling aggs on queue %d\n",
1426 queue);
1427 iwl_mvm_invalidate_sta_queue(mvm, queue,
1428 disable_agg_tids, false);
1429 }
1430 }
1431
1432 inc_ssn = iwl_mvm_enable_txq(mvm, sta, queue, ssn, &cfg, wdg_timeout);
1433
1434 /*
1435 * Mark queue as shared in transport if shared
1436 * Note this has to be done after queue enablement because enablement
1437 * can also set this value, and there is no indication there to shared
1438 * queues
1439 */
1440 if (shared_queue)
1441 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true);
1442
1443 spin_lock_bh(&mvmsta->lock);
1444 /*
1445 * This looks racy, but it is not. We have only one packet for
1446 * this ra/tid in our Tx path since we stop the Qdisc when we
1447 * need to allocate a new TFD queue.
1448 */
1449 if (inc_ssn) {
1450 mvmsta->tid_data[tid].seq_number += 0x10;
1451 ssn = (ssn + 1) & IEEE80211_SCTL_SEQ;
1452 }
1453 mvmsta->tid_data[tid].txq_id = queue;
1454 mvmsta->tfd_queue_msk |= BIT(queue);
1455 queue_state = mvmsta->tid_data[tid].state;
1456
1457 if (mvmsta->reserved_queue == queue)
1458 mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE;
1459 spin_unlock_bh(&mvmsta->lock);
1460
1461 if (!shared_queue) {
1462 ret = iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES);
1463 if (ret)
1464 goto out_err;
1465
1466 /* If we need to re-enable aggregations... */
1467 if (queue_state == IWL_AGG_ON) {
1468 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);
1469 if (ret)
1470 goto out_err;
1471 }
1472 } else {
1473 /* Redirect queue, if needed */
1474 ret = iwl_mvm_redirect_queue(mvm, queue, tid, ac, ssn,
1475 wdg_timeout, false,
1476 iwl_mvm_txq_from_tid(sta, tid));
1477 if (ret)
1478 goto out_err;
1479 }
1480
1481 return 0;
1482
1483 out_err:
1484 queue_tmp = queue;
1485 iwl_mvm_disable_txq(mvm, sta, mvmsta->deflink.sta_id, &queue_tmp, tid);
1486
1487 return ret;
1488 }
1489
iwl_mvm_sta_ensure_queue(struct iwl_mvm * mvm,struct ieee80211_txq * txq)1490 int iwl_mvm_sta_ensure_queue(struct iwl_mvm *mvm,
1491 struct ieee80211_txq *txq)
1492 {
1493 struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq);
1494 int ret = -EINVAL;
1495
1496 lockdep_assert_held(&mvm->mutex);
1497
1498 if (likely(test_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state)) ||
1499 !txq->sta) {
1500 return 0;
1501 }
1502
1503 if (!iwl_mvm_sta_alloc_queue(mvm, txq->sta, txq->ac, txq->tid)) {
1504 set_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state);
1505 ret = 0;
1506 }
1507
1508 local_bh_disable();
1509 spin_lock(&mvm->add_stream_lock);
1510 if (!list_empty(&mvmtxq->list))
1511 list_del_init(&mvmtxq->list);
1512 spin_unlock(&mvm->add_stream_lock);
1513 local_bh_enable();
1514
1515 return ret;
1516 }
1517
iwl_mvm_add_new_dqa_stream_wk(struct work_struct * wk)1518 void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk)
1519 {
1520 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm,
1521 add_stream_wk);
1522
1523 guard(mvm)(mvm);
1524
1525 /* will reschedule to run after restart */
1526 if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status) ||
1527 test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1528 return;
1529
1530 iwl_mvm_inactivity_check(mvm, IWL_INVALID_STA);
1531
1532 while (!list_empty(&mvm->add_stream_txqs)) {
1533 struct iwl_mvm_txq *mvmtxq;
1534 struct ieee80211_txq *txq;
1535 u8 tid;
1536
1537 mvmtxq = list_first_entry(&mvm->add_stream_txqs,
1538 struct iwl_mvm_txq, list);
1539
1540 txq = container_of((void *)mvmtxq, struct ieee80211_txq,
1541 drv_priv);
1542 tid = txq->tid;
1543 if (tid == IEEE80211_NUM_TIDS)
1544 tid = IWL_MAX_TID_COUNT;
1545
1546 /*
1547 * We can't really do much here, but if this fails we can't
1548 * transmit anyway - so just don't transmit the frame etc.
1549 * and let them back up ... we've tried our best to allocate
1550 * a queue in the function itself.
1551 */
1552 if (iwl_mvm_sta_alloc_queue(mvm, txq->sta, txq->ac, tid)) {
1553 spin_lock_bh(&mvm->add_stream_lock);
1554 list_del_init(&mvmtxq->list);
1555 spin_unlock_bh(&mvm->add_stream_lock);
1556 continue;
1557 }
1558
1559 /* now we're ready, any remaining races/concurrency will be
1560 * handled in iwl_mvm_mac_itxq_xmit()
1561 */
1562 set_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state);
1563
1564 local_bh_disable();
1565 spin_lock(&mvm->add_stream_lock);
1566 list_del_init(&mvmtxq->list);
1567 spin_unlock(&mvm->add_stream_lock);
1568
1569 iwl_mvm_mac_itxq_xmit(mvm->hw, txq);
1570 local_bh_enable();
1571 }
1572 }
1573
iwl_mvm_reserve_sta_stream(struct iwl_mvm * mvm,struct ieee80211_sta * sta,enum nl80211_iftype vif_type)1574 static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm,
1575 struct ieee80211_sta *sta,
1576 enum nl80211_iftype vif_type)
1577 {
1578 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1579 int queue;
1580
1581 /* queue reserving is disabled on new TX path */
1582 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
1583 return 0;
1584
1585 /* run the general cleanup/unsharing of queues */
1586 iwl_mvm_inactivity_check(mvm, IWL_INVALID_STA);
1587
1588 /* Make sure we have free resources for this STA */
1589 if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls &&
1590 !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].tid_bitmap &&
1591 (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status ==
1592 IWL_MVM_QUEUE_FREE))
1593 queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE;
1594 else
1595 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id,
1596 IWL_MVM_DQA_MIN_DATA_QUEUE,
1597 IWL_MVM_DQA_MAX_DATA_QUEUE);
1598 if (queue < 0) {
1599 /* try again - this time kick out a queue if needed */
1600 queue = iwl_mvm_inactivity_check(mvm, mvmsta->deflink.sta_id);
1601 if (queue < 0) {
1602 IWL_ERR(mvm, "No available queues for new station\n");
1603 return -ENOSPC;
1604 }
1605 }
1606 mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED;
1607
1608 mvmsta->reserved_queue = queue;
1609
1610 IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n",
1611 queue, mvmsta->deflink.sta_id);
1612
1613 return 0;
1614 }
1615
1616 /*
1617 * In DQA mode, after a HW restart the queues should be allocated as before, in
1618 * order to avoid race conditions when there are shared queues. This function
1619 * does the re-mapping and queue allocation.
1620 *
1621 * Note that re-enabling aggregations isn't done in this function.
1622 */
iwl_mvm_realloc_queues_after_restart(struct iwl_mvm * mvm,struct ieee80211_sta * sta)1623 void iwl_mvm_realloc_queues_after_restart(struct iwl_mvm *mvm,
1624 struct ieee80211_sta *sta)
1625 {
1626 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1627 unsigned int wdg =
1628 iwl_mvm_get_wd_timeout(mvm, mvm_sta->vif);
1629 int i;
1630 struct iwl_trans_txq_scd_cfg cfg = {
1631 .sta_id = mvm_sta->deflink.sta_id,
1632 .frame_limit = IWL_FRAME_LIMIT,
1633 };
1634
1635 /* Make sure reserved queue is still marked as such (if allocated) */
1636 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE)
1637 mvm->queue_info[mvm_sta->reserved_queue].status =
1638 IWL_MVM_QUEUE_RESERVED;
1639
1640 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
1641 struct iwl_mvm_tid_data *tid_data = &mvm_sta->tid_data[i];
1642 int txq_id = tid_data->txq_id;
1643 int ac;
1644
1645 if (txq_id == IWL_MVM_INVALID_QUEUE)
1646 continue;
1647
1648 ac = tid_to_mac80211_ac[i];
1649
1650 if (iwl_mvm_has_new_tx_api(mvm)) {
1651 IWL_DEBUG_TX_QUEUES(mvm,
1652 "Re-mapping sta %d tid %d\n",
1653 mvm_sta->deflink.sta_id, i);
1654 txq_id = iwl_mvm_tvqm_enable_txq(mvm, sta,
1655 mvm_sta->deflink.sta_id,
1656 i, wdg);
1657 /*
1658 * on failures, just set it to IWL_MVM_INVALID_QUEUE
1659 * to try again later, we have no other good way of
1660 * failing here
1661 */
1662 if (txq_id < 0)
1663 txq_id = IWL_MVM_INVALID_QUEUE;
1664 tid_data->txq_id = txq_id;
1665
1666 /*
1667 * Since we don't set the seq number after reset, and HW
1668 * sets it now, FW reset will cause the seq num to start
1669 * at 0 again, so driver will need to update it
1670 * internally as well, so it keeps in sync with real val
1671 */
1672 tid_data->seq_number = 0;
1673 } else {
1674 u16 seq = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
1675
1676 cfg.tid = i;
1677 cfg.fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac);
1678 cfg.aggregate = (txq_id >= IWL_MVM_DQA_MIN_DATA_QUEUE ||
1679 txq_id ==
1680 IWL_MVM_DQA_BSS_CLIENT_QUEUE);
1681
1682 IWL_DEBUG_TX_QUEUES(mvm,
1683 "Re-mapping sta %d tid %d to queue %d\n",
1684 mvm_sta->deflink.sta_id, i,
1685 txq_id);
1686
1687 iwl_mvm_enable_txq(mvm, sta, txq_id, seq, &cfg, wdg);
1688 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_READY;
1689 }
1690 }
1691 }
1692
iwl_mvm_add_int_sta_common(struct iwl_mvm * mvm,struct iwl_mvm_int_sta * sta,const u8 * addr,u16 mac_id,u16 color)1693 static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm,
1694 struct iwl_mvm_int_sta *sta,
1695 const u8 *addr,
1696 u16 mac_id, u16 color)
1697 {
1698 struct iwl_mvm_add_sta_cmd cmd;
1699 int ret;
1700 u32 status = ADD_STA_SUCCESS;
1701
1702 lockdep_assert_held(&mvm->mutex);
1703
1704 memset(&cmd, 0, sizeof(cmd));
1705 cmd.sta_id = sta->sta_id;
1706
1707 if (iwl_mvm_has_new_station_api(mvm->fw) &&
1708 sta->type == IWL_STA_AUX_ACTIVITY)
1709 cmd.mac_id_n_color = cpu_to_le32(mac_id);
1710 else
1711 cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id,
1712 color));
1713
1714 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
1715 cmd.station_type = sta->type;
1716
1717 if (!iwl_mvm_has_new_tx_api(mvm))
1718 cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk);
1719 cmd.tid_disable_tx = cpu_to_le16(0xffff);
1720
1721 if (addr)
1722 memcpy(cmd.addr, addr, ETH_ALEN);
1723
1724 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
1725 iwl_mvm_add_sta_cmd_size(mvm),
1726 &cmd, &status);
1727 if (ret)
1728 return ret;
1729
1730 switch (status & IWL_ADD_STA_STATUS_MASK) {
1731 case ADD_STA_SUCCESS:
1732 IWL_DEBUG_INFO(mvm, "Internal station added.\n");
1733 return 0;
1734 default:
1735 ret = -EIO;
1736 IWL_ERR(mvm, "Add internal station failed, status=0x%x\n",
1737 status);
1738 break;
1739 }
1740 return ret;
1741 }
1742
1743 /* Initialize driver data of a new sta */
iwl_mvm_sta_init(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * sta,int sta_id,u8 sta_type)1744 int iwl_mvm_sta_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1745 struct ieee80211_sta *sta, int sta_id, u8 sta_type)
1746 {
1747 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1748 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1749 struct iwl_mvm_rxq_dup_data *dup_data;
1750 int i, ret = 0;
1751
1752 lockdep_assert_held(&mvm->mutex);
1753
1754 mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id,
1755 mvmvif->color);
1756 mvm_sta->vif = vif;
1757
1758 /* for MLD sta_id(s) should be allocated for each link before calling
1759 * this function
1760 */
1761 if (!mvm->mld_api_is_used) {
1762 if (WARN_ON(sta_id == IWL_INVALID_STA))
1763 return -EINVAL;
1764
1765 mvm_sta->deflink.sta_id = sta_id;
1766 rcu_assign_pointer(mvm_sta->link[0], &mvm_sta->deflink);
1767
1768 if (!mvm->trans->mac_cfg->gen2)
1769 mvm_sta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize =
1770 LINK_QUAL_AGG_FRAME_LIMIT_DEF;
1771 else
1772 mvm_sta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize =
1773 LINK_QUAL_AGG_FRAME_LIMIT_GEN2_DEF;
1774 }
1775
1776 mvm_sta->tt_tx_protection = false;
1777 mvm_sta->sta_type = sta_type;
1778
1779 mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */
1780
1781 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
1782 /*
1783 * Mark all queues for this STA as unallocated and defer TX
1784 * frames until the queue is allocated
1785 */
1786 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE;
1787 }
1788
1789 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) {
1790 struct iwl_mvm_txq *mvmtxq =
1791 iwl_mvm_txq_from_mac80211(sta->txq[i]);
1792
1793 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE;
1794 INIT_LIST_HEAD(&mvmtxq->list);
1795 atomic_set(&mvmtxq->tx_request, 0);
1796 }
1797
1798 if (iwl_mvm_has_new_rx_api(mvm)) {
1799 int q;
1800
1801 dup_data = kzalloc_objs(*dup_data, mvm->trans->info.num_rxqs);
1802 if (!dup_data)
1803 return -ENOMEM;
1804 /*
1805 * Initialize all the last_seq values to 0xffff which can never
1806 * compare equal to the frame's seq_ctrl in the check in
1807 * iwl_mvm_is_dup() since the lower 4 bits are the fragment
1808 * number and fragmented packets don't reach that function.
1809 *
1810 * This thus allows receiving a packet with seqno 0 and the
1811 * retry bit set as the very first packet on a new TID.
1812 */
1813 for (q = 0; q < mvm->trans->info.num_rxqs; q++)
1814 memset(dup_data[q].last_seq, 0xff,
1815 sizeof(dup_data[q].last_seq));
1816 mvm_sta->dup_data = dup_data;
1817 }
1818
1819 if (!iwl_mvm_has_new_tx_api(mvm)) {
1820 ret = iwl_mvm_reserve_sta_stream(mvm, sta,
1821 ieee80211_vif_type_p2p(vif));
1822 if (ret)
1823 return ret;
1824 }
1825
1826 /*
1827 * if rs is registered with mac80211, then "add station" will be handled
1828 * via the corresponding ops, otherwise need to notify rate scaling here
1829 */
1830 if (iwl_mvm_has_tlc_offload(mvm))
1831 iwl_mvm_rs_add_sta(mvm, mvm_sta);
1832 else
1833 spin_lock_init(&mvm_sta->deflink.lq_sta.rs_drv.pers.lock);
1834
1835 iwl_mvm_toggle_tx_ant(mvm, &mvm_sta->tx_ant);
1836
1837 return 0;
1838 }
1839
iwl_mvm_add_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * sta)1840 int iwl_mvm_add_sta(struct iwl_mvm *mvm,
1841 struct ieee80211_vif *vif,
1842 struct ieee80211_sta *sta)
1843 {
1844 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1845 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1846 int ret, sta_id;
1847 bool sta_update = false;
1848 unsigned int sta_flags = 0;
1849
1850 lockdep_assert_held(&mvm->mutex);
1851
1852 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1853 sta_id = iwl_mvm_find_free_sta_id(mvm,
1854 ieee80211_vif_type_p2p(vif));
1855 else
1856 sta_id = mvm_sta->deflink.sta_id;
1857
1858 if (sta_id == IWL_INVALID_STA)
1859 return -ENOSPC;
1860
1861 spin_lock_init(&mvm_sta->lock);
1862
1863 /* if this is a HW restart re-alloc existing queues */
1864 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1865 struct iwl_mvm_int_sta tmp_sta = {
1866 .sta_id = sta_id,
1867 .type = mvm_sta->sta_type,
1868 };
1869
1870 /* First add an empty station since allocating
1871 * a queue requires a valid station
1872 */
1873 ret = iwl_mvm_add_int_sta_common(mvm, &tmp_sta, sta->addr,
1874 mvmvif->id, mvmvif->color);
1875 if (ret)
1876 goto err;
1877
1878 iwl_mvm_realloc_queues_after_restart(mvm, sta);
1879 sta_update = true;
1880 sta_flags = iwl_mvm_has_new_tx_api(mvm) ? 0 : STA_MODIFY_QUEUES;
1881 goto update_fw;
1882 }
1883
1884 ret = iwl_mvm_sta_init(mvm, vif, sta, sta_id,
1885 sta->tdls ? IWL_STA_TDLS_LINK : IWL_STA_LINK);
1886 if (ret)
1887 goto err;
1888
1889 update_fw:
1890 ret = iwl_mvm_sta_send_to_fw(mvm, sta, sta_update, sta_flags);
1891 if (ret)
1892 goto err;
1893
1894 if (vif->type == NL80211_IFTYPE_STATION) {
1895 if (!sta->tdls) {
1896 WARN_ON(mvmvif->deflink.ap_sta_id != IWL_INVALID_STA);
1897 mvmvif->deflink.ap_sta_id = sta_id;
1898 } else {
1899 WARN_ON(mvmvif->deflink.ap_sta_id == IWL_INVALID_STA);
1900 }
1901 }
1902
1903 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta);
1904
1905 return 0;
1906
1907 err:
1908 return ret;
1909 }
1910
iwl_mvm_drain_sta(struct iwl_mvm * mvm,struct iwl_mvm_sta * mvmsta,bool drain)1911 int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta,
1912 bool drain)
1913 {
1914 struct iwl_mvm_add_sta_cmd cmd = {};
1915 int ret;
1916 u32 status;
1917
1918 lockdep_assert_held(&mvm->mutex);
1919
1920 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color);
1921 cmd.sta_id = mvmsta->deflink.sta_id;
1922 cmd.add_modify = STA_MODE_MODIFY;
1923 cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0;
1924 cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW);
1925
1926 status = ADD_STA_SUCCESS;
1927 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
1928 iwl_mvm_add_sta_cmd_size(mvm),
1929 &cmd, &status);
1930 if (ret)
1931 return ret;
1932
1933 switch (status & IWL_ADD_STA_STATUS_MASK) {
1934 case ADD_STA_SUCCESS:
1935 IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n",
1936 mvmsta->deflink.sta_id);
1937 break;
1938 default:
1939 ret = -EIO;
1940 IWL_ERR(mvm, "Couldn't drain frames for staid %d\n",
1941 mvmsta->deflink.sta_id);
1942 break;
1943 }
1944
1945 return ret;
1946 }
1947
1948 /*
1949 * Remove a station from the FW table. Before sending the command to remove
1950 * the station validate that the station is indeed known to the driver (sanity
1951 * only).
1952 */
iwl_mvm_rm_sta_common(struct iwl_mvm * mvm,u8 sta_id)1953 static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id)
1954 {
1955 struct ieee80211_sta *sta;
1956 struct iwl_mvm_rm_sta_cmd rm_sta_cmd = {
1957 .sta_id = sta_id,
1958 };
1959 int ret;
1960
1961 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1962 lockdep_is_held(&mvm->mutex));
1963
1964 /* Note: internal stations are marked as error values */
1965 if (!sta) {
1966 IWL_ERR(mvm, "Invalid station id\n");
1967 return -EINVAL;
1968 }
1969
1970 ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0,
1971 sizeof(rm_sta_cmd), &rm_sta_cmd);
1972 if (ret) {
1973 IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id);
1974 return ret;
1975 }
1976
1977 return 0;
1978 }
1979
iwl_mvm_disable_sta_queues(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * sta)1980 static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm,
1981 struct ieee80211_vif *vif,
1982 struct ieee80211_sta *sta)
1983 {
1984 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1985 int i;
1986
1987 lockdep_assert_held(&mvm->mutex);
1988
1989 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) {
1990 if (mvm_sta->tid_data[i].txq_id == IWL_MVM_INVALID_QUEUE)
1991 continue;
1992
1993 iwl_mvm_disable_txq(mvm, sta, mvm_sta->deflink.sta_id,
1994 &mvm_sta->tid_data[i].txq_id, i);
1995 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE;
1996 }
1997
1998 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) {
1999 struct iwl_mvm_txq *mvmtxq =
2000 iwl_mvm_txq_from_mac80211(sta->txq[i]);
2001
2002 spin_lock_bh(&mvm->add_stream_lock);
2003 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE;
2004 list_del_init(&mvmtxq->list);
2005 clear_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state);
2006 spin_unlock_bh(&mvm->add_stream_lock);
2007 }
2008 }
2009
iwl_mvm_wait_sta_queues_empty(struct iwl_mvm * mvm,struct iwl_mvm_sta * mvm_sta)2010 int iwl_mvm_wait_sta_queues_empty(struct iwl_mvm *mvm,
2011 struct iwl_mvm_sta *mvm_sta)
2012 {
2013 int i;
2014
2015 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) {
2016 u16 txq_id;
2017 int ret;
2018
2019 spin_lock_bh(&mvm_sta->lock);
2020 txq_id = mvm_sta->tid_data[i].txq_id;
2021 spin_unlock_bh(&mvm_sta->lock);
2022
2023 if (txq_id == IWL_MVM_INVALID_QUEUE)
2024 continue;
2025
2026 ret = iwl_trans_wait_txq_empty(mvm->trans, txq_id);
2027 if (ret)
2028 return ret;
2029 }
2030
2031 return 0;
2032 }
2033
2034 /* Execute the common part for both MLD and non-MLD modes.
2035 * Returns if we're done with removing the station, either
2036 * with error or success
2037 */
iwl_mvm_sta_del(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_link_sta * link_sta)2038 void iwl_mvm_sta_del(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2039 struct ieee80211_sta *sta,
2040 struct ieee80211_link_sta *link_sta)
2041 {
2042 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2043 struct iwl_mvm_vif_link_info *mvm_link =
2044 mvmvif->link[link_sta->link_id];
2045 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2046 struct iwl_mvm_link_sta *mvm_link_sta;
2047 u8 sta_id;
2048
2049 lockdep_assert_held(&mvm->mutex);
2050
2051 mvm_link_sta =
2052 rcu_dereference_protected(mvm_sta->link[link_sta->link_id],
2053 lockdep_is_held(&mvm->mutex));
2054 sta_id = mvm_link_sta->sta_id;
2055
2056 if (vif->type == NL80211_IFTYPE_STATION &&
2057 mvm_link->ap_sta_id == sta_id) {
2058 /* first remove remaining keys */
2059 iwl_mvm_sec_key_remove_ap(mvm, vif, mvm_link,
2060 link_sta->link_id);
2061
2062 mvm_link->ap_sta_id = IWL_INVALID_STA;
2063 }
2064
2065 /*
2066 * This shouldn't happen - the TDLS channel switch should be canceled
2067 * before the STA is removed.
2068 */
2069 if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == sta_id)) {
2070 mvm->tdls_cs.peer.sta_id = IWL_INVALID_STA;
2071 cancel_delayed_work(&mvm->tdls_cs.dwork);
2072 }
2073 }
2074
iwl_mvm_rm_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * sta)2075 int iwl_mvm_rm_sta(struct iwl_mvm *mvm,
2076 struct ieee80211_vif *vif,
2077 struct ieee80211_sta *sta)
2078 {
2079 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2080 int ret;
2081
2082 lockdep_assert_held(&mvm->mutex);
2083
2084 ret = iwl_mvm_drain_sta(mvm, mvm_sta, true);
2085 if (ret)
2086 return ret;
2087
2088 /* flush its queues here since we are freeing mvm_sta */
2089 ret = iwl_mvm_flush_sta(mvm, mvm_sta->deflink.sta_id,
2090 mvm_sta->tfd_queue_msk);
2091 if (ret)
2092 return ret;
2093 if (iwl_mvm_has_new_tx_api(mvm)) {
2094 ret = iwl_mvm_wait_sta_queues_empty(mvm, mvm_sta);
2095 } else {
2096 u32 q_mask = mvm_sta->tfd_queue_msk;
2097
2098 ret = iwl_trans_wait_tx_queues_empty(mvm->trans,
2099 q_mask);
2100 }
2101 if (ret)
2102 return ret;
2103
2104 ret = iwl_mvm_drain_sta(mvm, mvm_sta, false);
2105
2106 iwl_mvm_disable_sta_queues(mvm, vif, sta);
2107
2108 /* If there is a TXQ still marked as reserved - free it */
2109 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) {
2110 u8 reserved_txq = mvm_sta->reserved_queue;
2111 enum iwl_mvm_queue_status *status;
2112
2113 /*
2114 * If no traffic has gone through the reserved TXQ - it
2115 * is still marked as IWL_MVM_QUEUE_RESERVED, and
2116 * should be manually marked as free again
2117 */
2118 status = &mvm->queue_info[reserved_txq].status;
2119 if (WARN((*status != IWL_MVM_QUEUE_RESERVED) &&
2120 (*status != IWL_MVM_QUEUE_FREE),
2121 "sta_id %d reserved txq %d status %d",
2122 mvm_sta->deflink.sta_id, reserved_txq, *status))
2123 return -EINVAL;
2124
2125 *status = IWL_MVM_QUEUE_FREE;
2126 }
2127
2128 iwl_mvm_sta_del(mvm, vif, sta, &sta->deflink);
2129
2130 ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->deflink.sta_id);
2131 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->deflink.sta_id], NULL);
2132
2133 return ret;
2134 }
2135
iwl_mvm_rm_sta_id(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u8 sta_id)2136 int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm,
2137 struct ieee80211_vif *vif,
2138 u8 sta_id)
2139 {
2140 int ret = iwl_mvm_rm_sta_common(mvm, sta_id);
2141
2142 lockdep_assert_held(&mvm->mutex);
2143
2144 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL);
2145 return ret;
2146 }
2147
iwl_mvm_allocate_int_sta(struct iwl_mvm * mvm,struct iwl_mvm_int_sta * sta,u32 qmask,enum nl80211_iftype iftype,u8 type)2148 int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm,
2149 struct iwl_mvm_int_sta *sta,
2150 u32 qmask, enum nl80211_iftype iftype,
2151 u8 type)
2152 {
2153 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) ||
2154 sta->sta_id == IWL_INVALID_STA) {
2155 sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype);
2156 if (WARN_ON_ONCE(sta->sta_id == IWL_INVALID_STA))
2157 return -ENOSPC;
2158 }
2159
2160 sta->tfd_queue_msk = qmask;
2161 sta->type = type;
2162
2163 /* put a non-NULL value so iterating over the stations won't stop */
2164 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL));
2165 return 0;
2166 }
2167
iwl_mvm_dealloc_int_sta(struct iwl_mvm * mvm,struct iwl_mvm_int_sta * sta)2168 void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta)
2169 {
2170 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL);
2171 memset(sta, 0, sizeof(struct iwl_mvm_int_sta));
2172 sta->sta_id = IWL_INVALID_STA;
2173 }
2174
iwl_mvm_enable_aux_snif_queue(struct iwl_mvm * mvm,u16 queue,u8 sta_id,u8 fifo)2175 static void iwl_mvm_enable_aux_snif_queue(struct iwl_mvm *mvm, u16 queue,
2176 u8 sta_id, u8 fifo)
2177 {
2178 unsigned int wdg_timeout =
2179 mvm->trans->mac_cfg->base->wd_timeout;
2180 struct iwl_trans_txq_scd_cfg cfg = {
2181 .fifo = fifo,
2182 .sta_id = sta_id,
2183 .tid = IWL_MAX_TID_COUNT,
2184 .aggregate = false,
2185 .frame_limit = IWL_FRAME_LIMIT,
2186 };
2187
2188 WARN_ON(iwl_mvm_has_new_tx_api(mvm));
2189
2190 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout);
2191 }
2192
iwl_mvm_enable_aux_snif_queue_tvqm(struct iwl_mvm * mvm,u8 sta_id)2193 static int iwl_mvm_enable_aux_snif_queue_tvqm(struct iwl_mvm *mvm, u8 sta_id)
2194 {
2195 unsigned int wdg_timeout =
2196 mvm->trans->mac_cfg->base->wd_timeout;
2197
2198 WARN_ON(!iwl_mvm_has_new_tx_api(mvm));
2199
2200 return iwl_mvm_tvqm_enable_txq(mvm, NULL, sta_id, IWL_MAX_TID_COUNT,
2201 wdg_timeout);
2202 }
2203
iwl_mvm_add_int_sta_with_queue(struct iwl_mvm * mvm,int macidx,int maccolor,u8 * addr,struct iwl_mvm_int_sta * sta,u16 * queue,int fifo)2204 static int iwl_mvm_add_int_sta_with_queue(struct iwl_mvm *mvm, int macidx,
2205 int maccolor, u8 *addr,
2206 struct iwl_mvm_int_sta *sta,
2207 u16 *queue, int fifo)
2208 {
2209 int ret;
2210
2211 /* Map queue to fifo - needs to happen before adding station */
2212 if (!iwl_mvm_has_new_tx_api(mvm))
2213 iwl_mvm_enable_aux_snif_queue(mvm, *queue, sta->sta_id, fifo);
2214
2215 ret = iwl_mvm_add_int_sta_common(mvm, sta, addr, macidx, maccolor);
2216 if (ret) {
2217 if (!iwl_mvm_has_new_tx_api(mvm))
2218 iwl_mvm_disable_txq(mvm, NULL, sta->sta_id, queue,
2219 IWL_MAX_TID_COUNT);
2220 return ret;
2221 }
2222
2223 /*
2224 * For 22000 firmware and on we cannot add queue to a station unknown
2225 * to firmware so enable queue here - after the station was added
2226 */
2227 if (iwl_mvm_has_new_tx_api(mvm)) {
2228 int txq;
2229
2230 txq = iwl_mvm_enable_aux_snif_queue_tvqm(mvm, sta->sta_id);
2231 if (txq < 0) {
2232 iwl_mvm_rm_sta_common(mvm, sta->sta_id);
2233 return txq;
2234 }
2235
2236 *queue = txq;
2237 }
2238
2239 return 0;
2240 }
2241
iwl_mvm_add_aux_sta(struct iwl_mvm * mvm,u32 lmac_id)2242 int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm, u32 lmac_id)
2243 {
2244 int ret;
2245 u32 qmask = mvm->aux_queue == IWL_MVM_INVALID_QUEUE ? 0 :
2246 BIT(mvm->aux_queue);
2247
2248 lockdep_assert_held(&mvm->mutex);
2249
2250 /* Allocate aux station and assign to it the aux queue */
2251 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, qmask,
2252 NL80211_IFTYPE_UNSPECIFIED,
2253 IWL_STA_AUX_ACTIVITY);
2254 if (ret)
2255 return ret;
2256
2257 /*
2258 * In CDB NICs we need to specify which lmac to use for aux activity
2259 * using the mac_id argument place to send lmac_id to the function
2260 */
2261 ret = iwl_mvm_add_int_sta_with_queue(mvm, lmac_id, 0, NULL,
2262 &mvm->aux_sta, &mvm->aux_queue,
2263 IWL_MVM_TX_FIFO_MCAST);
2264 if (ret) {
2265 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
2266 return ret;
2267 }
2268
2269 return 0;
2270 }
2271
iwl_mvm_add_snif_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2272 int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2273 {
2274 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2275
2276 lockdep_assert_held(&mvm->mutex);
2277
2278 return iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, mvmvif->color,
2279 NULL, &mvm->snif_sta,
2280 &mvm->snif_queue,
2281 IWL_MVM_TX_FIFO_BE);
2282 }
2283
iwl_mvm_rm_snif_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2284 int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2285 {
2286 int ret;
2287
2288 lockdep_assert_held(&mvm->mutex);
2289
2290 if (WARN_ON_ONCE(mvm->snif_sta.sta_id == IWL_INVALID_STA))
2291 return -EINVAL;
2292
2293 iwl_mvm_disable_txq(mvm, NULL, mvm->snif_sta.sta_id,
2294 &mvm->snif_queue, IWL_MAX_TID_COUNT);
2295 ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id);
2296 if (ret)
2297 IWL_WARN(mvm, "Failed sending remove station\n");
2298
2299 return ret;
2300 }
2301
iwl_mvm_rm_aux_sta(struct iwl_mvm * mvm)2302 int iwl_mvm_rm_aux_sta(struct iwl_mvm *mvm)
2303 {
2304 int ret;
2305
2306 lockdep_assert_held(&mvm->mutex);
2307
2308 if (WARN_ON_ONCE(mvm->aux_sta.sta_id == IWL_INVALID_STA))
2309 return -EINVAL;
2310
2311 iwl_mvm_disable_txq(mvm, NULL, mvm->aux_sta.sta_id,
2312 &mvm->aux_queue, IWL_MAX_TID_COUNT);
2313 ret = iwl_mvm_rm_sta_common(mvm, mvm->aux_sta.sta_id);
2314 if (ret)
2315 IWL_WARN(mvm, "Failed sending remove station\n");
2316 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
2317
2318 return ret;
2319 }
2320
iwl_mvm_dealloc_snif_sta(struct iwl_mvm * mvm)2321 void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm)
2322 {
2323 iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta);
2324 }
2325
2326 /*
2327 * Send the add station command for the vif's broadcast station.
2328 * Assumes that the station was already allocated.
2329 *
2330 * @mvm: the mvm component
2331 * @vif: the interface to which the broadcast station is added
2332 * @bsta: the broadcast station to add.
2333 */
iwl_mvm_send_add_bcast_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2334 int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2335 {
2336 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2337 struct iwl_mvm_int_sta *bsta = &mvmvif->deflink.bcast_sta;
2338 static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
2339 const u8 *baddr = _baddr;
2340 int queue;
2341 int ret;
2342 unsigned int wdg_timeout =
2343 iwl_mvm_get_wd_timeout(mvm, vif);
2344 struct iwl_trans_txq_scd_cfg cfg = {
2345 .fifo = IWL_MVM_TX_FIFO_VO,
2346 .sta_id = mvmvif->deflink.bcast_sta.sta_id,
2347 .tid = IWL_MAX_TID_COUNT,
2348 .aggregate = false,
2349 .frame_limit = IWL_FRAME_LIMIT,
2350 };
2351
2352 lockdep_assert_held(&mvm->mutex);
2353
2354 if (!iwl_mvm_has_new_tx_api(mvm)) {
2355 if (vif->type == NL80211_IFTYPE_AP ||
2356 vif->type == NL80211_IFTYPE_ADHOC) {
2357 queue = mvm->probe_queue;
2358 } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2359 queue = mvm->p2p_dev_queue;
2360 } else {
2361 WARN(1, "Missing required TXQ for adding bcast STA\n");
2362 return -EINVAL;
2363 }
2364
2365 bsta->tfd_queue_msk |= BIT(queue);
2366
2367 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout);
2368 }
2369
2370 if (vif->type == NL80211_IFTYPE_ADHOC)
2371 baddr = vif->bss_conf.bssid;
2372
2373 if (WARN_ON_ONCE(bsta->sta_id == IWL_INVALID_STA))
2374 return -ENOSPC;
2375
2376 ret = iwl_mvm_add_int_sta_common(mvm, bsta, baddr,
2377 mvmvif->id, mvmvif->color);
2378 if (ret)
2379 return ret;
2380
2381 /*
2382 * For 22000 firmware and on we cannot add queue to a station unknown
2383 * to firmware so enable queue here - after the station was added
2384 */
2385 if (iwl_mvm_has_new_tx_api(mvm)) {
2386 queue = iwl_mvm_tvqm_enable_txq(mvm, NULL, bsta->sta_id,
2387 IWL_MAX_TID_COUNT,
2388 wdg_timeout);
2389 if (queue < 0) {
2390 iwl_mvm_rm_sta_common(mvm, bsta->sta_id);
2391 return queue;
2392 }
2393
2394 if (vif->type == NL80211_IFTYPE_AP ||
2395 vif->type == NL80211_IFTYPE_ADHOC) {
2396 /* for queue management */
2397 mvm->probe_queue = queue;
2398 /* for use in TX */
2399 mvmvif->deflink.mgmt_queue = queue;
2400 } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2401 mvm->p2p_dev_queue = queue;
2402 }
2403 } else if (vif->type == NL80211_IFTYPE_AP ||
2404 vif->type == NL80211_IFTYPE_ADHOC) {
2405 /* set it for use in TX */
2406 mvmvif->deflink.mgmt_queue = mvm->probe_queue;
2407 }
2408
2409 return 0;
2410 }
2411
iwl_mvm_free_bcast_sta_queues(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2412 void iwl_mvm_free_bcast_sta_queues(struct iwl_mvm *mvm,
2413 struct ieee80211_vif *vif)
2414 {
2415 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2416 u16 *queueptr, queue;
2417
2418 lockdep_assert_held(&mvm->mutex);
2419
2420 iwl_mvm_flush_sta(mvm, mvmvif->deflink.bcast_sta.sta_id,
2421 mvmvif->deflink.bcast_sta.tfd_queue_msk);
2422
2423 switch (vif->type) {
2424 case NL80211_IFTYPE_AP:
2425 case NL80211_IFTYPE_ADHOC:
2426 queueptr = &mvm->probe_queue;
2427 break;
2428 case NL80211_IFTYPE_P2P_DEVICE:
2429 queueptr = &mvm->p2p_dev_queue;
2430 break;
2431 default:
2432 WARN(1, "Can't free bcast queue on vif type %d\n",
2433 vif->type);
2434 return;
2435 }
2436
2437 queue = *queueptr;
2438 iwl_mvm_disable_txq(mvm, NULL, mvmvif->deflink.bcast_sta.sta_id,
2439 queueptr, IWL_MAX_TID_COUNT);
2440
2441 if (vif->type == NL80211_IFTYPE_AP || vif->type == NL80211_IFTYPE_ADHOC)
2442 mvmvif->deflink.mgmt_queue = mvm->probe_queue;
2443
2444 if (iwl_mvm_has_new_tx_api(mvm))
2445 return;
2446
2447 WARN_ON(!(mvmvif->deflink.bcast_sta.tfd_queue_msk & BIT(queue)));
2448 mvmvif->deflink.bcast_sta.tfd_queue_msk &= ~BIT(queue);
2449 }
2450
2451 /* Send the FW a request to remove the station from its internal data
2452 * structures, but DO NOT remove the entry from the local data structures. */
iwl_mvm_send_rm_bcast_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2453 int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2454 {
2455 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2456 int ret;
2457
2458 lockdep_assert_held(&mvm->mutex);
2459
2460 iwl_mvm_free_bcast_sta_queues(mvm, vif);
2461
2462 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->deflink.bcast_sta.sta_id);
2463 if (ret)
2464 IWL_WARN(mvm, "Failed sending remove station\n");
2465 return ret;
2466 }
2467
iwl_mvm_alloc_bcast_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2468 int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2469 {
2470 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2471
2472 lockdep_assert_held(&mvm->mutex);
2473
2474 return iwl_mvm_allocate_int_sta(mvm, &mvmvif->deflink.bcast_sta, 0,
2475 ieee80211_vif_type_p2p(vif),
2476 IWL_STA_GENERAL_PURPOSE);
2477 }
2478
2479 /* Allocate a new station entry for the broadcast station to the given vif,
2480 * and send it to the FW.
2481 * Note that each P2P mac should have its own broadcast station.
2482 *
2483 * @mvm: the mvm component
2484 * @vif: the interface to which the broadcast station is added
2485 * @bsta: the broadcast station to add. */
iwl_mvm_add_p2p_bcast_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2486 int iwl_mvm_add_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2487 {
2488 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2489 struct iwl_mvm_int_sta *bsta = &mvmvif->deflink.bcast_sta;
2490 int ret;
2491
2492 lockdep_assert_held(&mvm->mutex);
2493
2494 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
2495 if (ret)
2496 return ret;
2497
2498 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2499
2500 if (ret)
2501 iwl_mvm_dealloc_int_sta(mvm, bsta);
2502
2503 return ret;
2504 }
2505
iwl_mvm_dealloc_bcast_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2506 void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2507 {
2508 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2509
2510 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->deflink.bcast_sta);
2511 }
2512
2513 /*
2514 * Send the FW a request to remove the station from its internal data
2515 * structures, and in addition remove it from the local data structure.
2516 */
iwl_mvm_rm_p2p_bcast_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2517 int iwl_mvm_rm_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2518 {
2519 int ret;
2520
2521 lockdep_assert_held(&mvm->mutex);
2522
2523 ret = iwl_mvm_send_rm_bcast_sta(mvm, vif);
2524
2525 iwl_mvm_dealloc_bcast_sta(mvm, vif);
2526
2527 return ret;
2528 }
2529
2530 /*
2531 * Allocate a new station entry for the multicast station to the given vif,
2532 * and send it to the FW.
2533 * Note that each AP/GO mac should have its own multicast station.
2534 *
2535 * @mvm: the mvm component
2536 * @vif: the interface to which the multicast station is added
2537 */
iwl_mvm_add_mcast_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2538 int iwl_mvm_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2539 {
2540 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2541 struct iwl_mvm_int_sta *msta = &mvmvif->deflink.mcast_sta;
2542 static const u8 _maddr[] = {0x03, 0x00, 0x00, 0x00, 0x00, 0x00};
2543 const u8 *maddr = _maddr;
2544 struct iwl_trans_txq_scd_cfg cfg = {
2545 .fifo = vif->type == NL80211_IFTYPE_AP ?
2546 IWL_MVM_TX_FIFO_MCAST : IWL_MVM_TX_FIFO_BE,
2547 .sta_id = msta->sta_id,
2548 .tid = 0,
2549 .aggregate = false,
2550 .frame_limit = IWL_FRAME_LIMIT,
2551 };
2552 unsigned int timeout = iwl_mvm_get_wd_timeout(mvm, vif);
2553 int ret;
2554
2555 lockdep_assert_held(&mvm->mutex);
2556
2557 if (WARN_ON(vif->type != NL80211_IFTYPE_AP &&
2558 vif->type != NL80211_IFTYPE_ADHOC))
2559 return -EOPNOTSUPP;
2560
2561 /*
2562 * In IBSS, ieee80211_check_queues() sets the cab_queue to be
2563 * invalid, so make sure we use the queue we want.
2564 * Note that this is done here as we want to avoid making DQA
2565 * changes in mac80211 layer.
2566 */
2567 if (vif->type == NL80211_IFTYPE_ADHOC)
2568 mvmvif->deflink.cab_queue = IWL_MVM_DQA_GCAST_QUEUE;
2569
2570 /*
2571 * While in previous FWs we had to exclude cab queue from TFD queue
2572 * mask, now it is needed as any other queue.
2573 */
2574 if (!iwl_mvm_has_new_tx_api(mvm) &&
2575 fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) {
2576 iwl_mvm_enable_txq(mvm, NULL, mvmvif->deflink.cab_queue, 0,
2577 &cfg,
2578 timeout);
2579 msta->tfd_queue_msk |= BIT(mvmvif->deflink.cab_queue);
2580 }
2581 ret = iwl_mvm_add_int_sta_common(mvm, msta, maddr,
2582 mvmvif->id, mvmvif->color);
2583 if (ret)
2584 goto err;
2585
2586 /*
2587 * Enable cab queue after the ADD_STA command is sent.
2588 * This is needed for 22000 firmware which won't accept SCD_QUEUE_CFG
2589 * command with unknown station id, and for FW that doesn't support
2590 * station API since the cab queue is not included in the
2591 * tfd_queue_mask.
2592 */
2593 if (iwl_mvm_has_new_tx_api(mvm)) {
2594 int queue = iwl_mvm_tvqm_enable_txq(mvm, NULL, msta->sta_id,
2595 0, timeout);
2596 if (queue < 0) {
2597 ret = queue;
2598 goto err;
2599 }
2600 mvmvif->deflink.cab_queue = queue;
2601 } else if (!fw_has_api(&mvm->fw->ucode_capa,
2602 IWL_UCODE_TLV_API_STA_TYPE))
2603 iwl_mvm_enable_txq(mvm, NULL, mvmvif->deflink.cab_queue, 0,
2604 &cfg,
2605 timeout);
2606
2607 return 0;
2608 err:
2609 iwl_mvm_dealloc_int_sta(mvm, msta);
2610 return ret;
2611 }
2612
__iwl_mvm_remove_sta_key(struct iwl_mvm * mvm,u8 sta_id,struct ieee80211_key_conf * keyconf,bool mcast)2613 static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id,
2614 struct ieee80211_key_conf *keyconf,
2615 bool mcast)
2616 {
2617 union {
2618 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1;
2619 struct iwl_mvm_add_sta_key_cmd cmd;
2620 } u = {};
2621 bool new_api = fw_has_api(&mvm->fw->ucode_capa,
2622 IWL_UCODE_TLV_API_TKIP_MIC_KEYS);
2623 __le16 key_flags;
2624 int ret, size;
2625 u32 status;
2626
2627 /* This is a valid situation for GTK removal */
2628 if (sta_id == IWL_INVALID_STA)
2629 return 0;
2630
2631 key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) &
2632 STA_KEY_FLG_KEYID_MSK);
2633 key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP);
2634 key_flags |= cpu_to_le16(STA_KEY_NOT_VALID);
2635
2636 if (mcast)
2637 key_flags |= cpu_to_le16(STA_KEY_MULTICAST);
2638
2639 /*
2640 * The fields assigned here are in the same location at the start
2641 * of the command, so we can do this union trick.
2642 */
2643 u.cmd.common.key_flags = key_flags;
2644 u.cmd.common.key_offset = keyconf->hw_key_idx;
2645 u.cmd.common.sta_id = sta_id;
2646
2647 size = new_api ? sizeof(u.cmd) : sizeof(u.cmd_v1);
2648
2649 status = ADD_STA_SUCCESS;
2650 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, &u.cmd,
2651 &status);
2652
2653 switch (status) {
2654 case ADD_STA_SUCCESS:
2655 IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n");
2656 break;
2657 default:
2658 ret = -EIO;
2659 IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n");
2660 break;
2661 }
2662
2663 return ret;
2664 }
2665
2666 /*
2667 * Send the FW a request to remove the station from its internal data
2668 * structures, and in addition remove it from the local data structure.
2669 */
iwl_mvm_rm_mcast_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2670 int iwl_mvm_rm_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2671 {
2672 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2673 int ret;
2674
2675 lockdep_assert_held(&mvm->mutex);
2676
2677 iwl_mvm_flush_sta(mvm, mvmvif->deflink.mcast_sta.sta_id,
2678 mvmvif->deflink.mcast_sta.tfd_queue_msk);
2679
2680 iwl_mvm_disable_txq(mvm, NULL, mvmvif->deflink.mcast_sta.sta_id,
2681 &mvmvif->deflink.cab_queue, 0);
2682
2683 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->deflink.mcast_sta.sta_id);
2684 if (ret)
2685 IWL_WARN(mvm, "Failed sending remove station\n");
2686
2687 return ret;
2688 }
2689
iwl_mvm_sync_rxq_del_ba(struct iwl_mvm * mvm,u8 baid)2690 static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid)
2691 {
2692 struct iwl_mvm_delba_data notif = {
2693 .baid = baid,
2694 };
2695
2696 iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_NOTIF_DEL_BA, true,
2697 ¬if, sizeof(notif));
2698 };
2699
iwl_mvm_free_reorder(struct iwl_mvm * mvm,struct iwl_mvm_baid_data * data)2700 static void iwl_mvm_free_reorder(struct iwl_mvm *mvm,
2701 struct iwl_mvm_baid_data *data)
2702 {
2703 int i;
2704
2705 iwl_mvm_sync_rxq_del_ba(mvm, data->baid);
2706
2707 for (i = 0; i < mvm->trans->info.num_rxqs; i++) {
2708 int j;
2709 struct iwl_mvm_reorder_buffer *reorder_buf =
2710 &data->reorder_buf[i];
2711 struct iwl_mvm_reorder_buf_entry *entries =
2712 &data->entries[i * data->entries_per_queue];
2713
2714 spin_lock_bh(&reorder_buf->lock);
2715 if (likely(!reorder_buf->num_stored)) {
2716 spin_unlock_bh(&reorder_buf->lock);
2717 continue;
2718 }
2719
2720 /*
2721 * This shouldn't happen in regular DELBA since the internal
2722 * delBA notification should trigger a release of all frames in
2723 * the reorder buffer.
2724 */
2725 WARN_ON(1);
2726
2727 for (j = 0; j < data->buf_size; j++)
2728 __skb_queue_purge(&entries[j].frames);
2729
2730 spin_unlock_bh(&reorder_buf->lock);
2731 }
2732 }
2733
iwl_mvm_init_reorder_buffer(struct iwl_mvm * mvm,struct iwl_mvm_baid_data * data,u16 ssn)2734 static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm,
2735 struct iwl_mvm_baid_data *data,
2736 u16 ssn)
2737 {
2738 int i;
2739
2740 for (i = 0; i < mvm->trans->info.num_rxqs; i++) {
2741 struct iwl_mvm_reorder_buffer *reorder_buf =
2742 &data->reorder_buf[i];
2743 struct iwl_mvm_reorder_buf_entry *entries =
2744 &data->entries[i * data->entries_per_queue];
2745 int j;
2746
2747 reorder_buf->num_stored = 0;
2748 reorder_buf->head_sn = ssn;
2749 spin_lock_init(&reorder_buf->lock);
2750 reorder_buf->queue = i;
2751 reorder_buf->valid = false;
2752 for (j = 0; j < data->buf_size; j++)
2753 __skb_queue_head_init(&entries[j].frames);
2754 }
2755 }
2756
iwl_mvm_fw_baid_op_sta(struct iwl_mvm * mvm,struct ieee80211_sta * sta,bool start,int tid,u16 ssn,u16 buf_size)2757 static int iwl_mvm_fw_baid_op_sta(struct iwl_mvm *mvm,
2758 struct ieee80211_sta *sta,
2759 bool start, int tid, u16 ssn,
2760 u16 buf_size)
2761 {
2762 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2763 struct iwl_mvm_add_sta_cmd cmd = {
2764 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color),
2765 .sta_id = mvm_sta->deflink.sta_id,
2766 .add_modify = STA_MODE_MODIFY,
2767 };
2768 u32 status;
2769 int ret;
2770
2771 if (start) {
2772 cmd.add_immediate_ba_tid = tid;
2773 cmd.add_immediate_ba_ssn = cpu_to_le16(ssn);
2774 cmd.rx_ba_window = cpu_to_le16(buf_size);
2775 cmd.modify_mask = STA_MODIFY_ADD_BA_TID;
2776 } else {
2777 cmd.remove_immediate_ba_tid = tid;
2778 cmd.modify_mask = STA_MODIFY_REMOVE_BA_TID;
2779 }
2780
2781 status = ADD_STA_SUCCESS;
2782 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
2783 iwl_mvm_add_sta_cmd_size(mvm),
2784 &cmd, &status);
2785 if (ret)
2786 return ret;
2787
2788 switch (status & IWL_ADD_STA_STATUS_MASK) {
2789 case ADD_STA_SUCCESS:
2790 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n",
2791 start ? "start" : "stopp");
2792 if (WARN_ON(start && iwl_mvm_has_new_rx_api(mvm) &&
2793 !(status & IWL_ADD_STA_BAID_VALID_MASK)))
2794 return -EINVAL;
2795 return u32_get_bits(status, IWL_ADD_STA_BAID_MASK);
2796 case ADD_STA_IMMEDIATE_BA_FAILURE:
2797 IWL_WARN(mvm, "RX BA Session refused by fw\n");
2798 return -ENOSPC;
2799 default:
2800 IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n",
2801 start ? "start" : "stopp", status);
2802 return -EIO;
2803 }
2804 }
2805
iwl_mvm_fw_baid_op_cmd(struct iwl_mvm * mvm,struct ieee80211_sta * sta,bool start,int tid,u16 ssn,u16 buf_size,int baid)2806 static int iwl_mvm_fw_baid_op_cmd(struct iwl_mvm *mvm,
2807 struct ieee80211_sta *sta,
2808 bool start, int tid, u16 ssn,
2809 u16 buf_size, int baid)
2810 {
2811 struct iwl_rx_baid_cfg_cmd cmd = {
2812 .action = start ? cpu_to_le32(IWL_RX_BAID_ACTION_ADD) :
2813 cpu_to_le32(IWL_RX_BAID_ACTION_REMOVE),
2814 };
2815 struct iwl_host_cmd hcmd = {
2816 .id = WIDE_ID(DATA_PATH_GROUP, RX_BAID_ALLOCATION_CONFIG_CMD),
2817 .flags = CMD_SEND_IN_RFKILL,
2818 .len[0] = sizeof(cmd),
2819 .data[0] = &cmd,
2820 };
2821 int ret;
2822
2823 BUILD_BUG_ON(sizeof(struct iwl_rx_baid_cfg_resp) != sizeof(baid));
2824
2825 if (start) {
2826 cmd.alloc.sta_id_mask =
2827 cpu_to_le32(iwl_mvm_sta_fw_id_mask(mvm, sta, -1));
2828 cmd.alloc.tid = tid;
2829 cmd.alloc.ssn = cpu_to_le16(ssn);
2830 cmd.alloc.win_size = cpu_to_le16(buf_size);
2831 baid = -EIO;
2832 } else if (iwl_fw_lookup_cmd_ver(mvm->fw, hcmd.id, 1) == 1) {
2833 cmd.remove_v1.baid = cpu_to_le32(baid);
2834 BUILD_BUG_ON(sizeof(cmd.remove_v1) > sizeof(cmd.remove));
2835 } else {
2836 cmd.remove.sta_id_mask =
2837 cpu_to_le32(iwl_mvm_sta_fw_id_mask(mvm, sta, -1));
2838 cmd.remove.tid = cpu_to_le32(tid);
2839 }
2840
2841 ret = iwl_mvm_send_cmd_status(mvm, &hcmd, &baid);
2842 if (ret)
2843 return ret;
2844
2845 if (!start) {
2846 /* ignore firmware baid on remove */
2847 baid = 0;
2848 }
2849
2850 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n",
2851 start ? "start" : "stopp");
2852
2853 if (baid < 0 || baid >= ARRAY_SIZE(mvm->baid_map))
2854 return -EINVAL;
2855
2856 return baid;
2857 }
2858
iwl_mvm_fw_baid_op(struct iwl_mvm * mvm,struct ieee80211_sta * sta,bool start,int tid,u16 ssn,u16 buf_size,int baid)2859 static int iwl_mvm_fw_baid_op(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
2860 bool start, int tid, u16 ssn, u16 buf_size,
2861 int baid)
2862 {
2863 if (fw_has_capa(&mvm->fw->ucode_capa,
2864 IWL_UCODE_TLV_CAPA_BAID_ML_SUPPORT))
2865 return iwl_mvm_fw_baid_op_cmd(mvm, sta, start,
2866 tid, ssn, buf_size, baid);
2867
2868 return iwl_mvm_fw_baid_op_sta(mvm, sta, start,
2869 tid, ssn, buf_size);
2870 }
2871
iwl_mvm_sta_rx_agg(struct iwl_mvm * mvm,struct ieee80211_sta * sta,int tid,u16 ssn,bool start,u16 buf_size,u16 timeout)2872 int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
2873 int tid, u16 ssn, bool start, u16 buf_size, u16 timeout)
2874 {
2875 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2876 struct iwl_mvm_baid_data *baid_data = NULL;
2877 int ret, baid;
2878 u32 max_ba_id_sessions = iwl_mvm_has_new_tx_api(mvm) ? IWL_MAX_BAID :
2879 IWL_MAX_BAID_OLD;
2880
2881 lockdep_assert_held(&mvm->mutex);
2882
2883 if (start && mvm->rx_ba_sessions >= max_ba_id_sessions) {
2884 IWL_WARN(mvm, "Not enough RX BA SESSIONS\n");
2885 return -ENOSPC;
2886 }
2887
2888 if (iwl_mvm_has_new_rx_api(mvm) && start) {
2889 u32 reorder_buf_size = buf_size * sizeof(baid_data->entries[0]);
2890
2891 /* sparse doesn't like the __align() so don't check */
2892 #ifndef __CHECKER__
2893 /*
2894 * The division below will be OK if either the cache line size
2895 * can be divided by the entry size (ALIGN will round up) or if
2896 * the entry size can be divided by the cache line size, in
2897 * which case the ALIGN() will do nothing.
2898 */
2899 BUILD_BUG_ON(SMP_CACHE_BYTES % sizeof(baid_data->entries[0]) &&
2900 sizeof(baid_data->entries[0]) % SMP_CACHE_BYTES);
2901 #endif
2902
2903 /*
2904 * Upward align the reorder buffer size to fill an entire cache
2905 * line for each queue, to avoid sharing cache lines between
2906 * different queues.
2907 */
2908 reorder_buf_size = ALIGN(reorder_buf_size, SMP_CACHE_BYTES);
2909
2910 /*
2911 * Allocate here so if allocation fails we can bail out early
2912 * before starting the BA session in the firmware
2913 */
2914 baid_data = kzalloc(sizeof(*baid_data) +
2915 mvm->trans->info.num_rxqs *
2916 reorder_buf_size,
2917 GFP_KERNEL);
2918 if (!baid_data)
2919 return -ENOMEM;
2920
2921 /*
2922 * This division is why we need the above BUILD_BUG_ON(),
2923 * if that doesn't hold then this will not be right.
2924 */
2925 baid_data->entries_per_queue =
2926 reorder_buf_size / sizeof(baid_data->entries[0]);
2927 }
2928
2929 if (iwl_mvm_has_new_rx_api(mvm) && !start) {
2930 baid = mvm_sta->tid_to_baid[tid];
2931 } else {
2932 /* we don't really need it in this case */
2933 baid = -1;
2934 }
2935
2936 /* Don't send command to remove (start=0) BAID during restart */
2937 if (start || !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
2938 baid = iwl_mvm_fw_baid_op(mvm, sta, start, tid, ssn, buf_size,
2939 baid);
2940
2941 if (baid < 0) {
2942 ret = baid;
2943 goto out_free;
2944 }
2945
2946 if (start) {
2947 mvm->rx_ba_sessions++;
2948
2949 if (!iwl_mvm_has_new_rx_api(mvm))
2950 return 0;
2951
2952 baid_data->baid = baid;
2953 baid_data->timeout = timeout;
2954 baid_data->last_rx = jiffies;
2955 baid_data->rcu_ptr = &mvm->baid_map[baid];
2956 timer_setup(&baid_data->session_timer,
2957 iwl_mvm_rx_agg_session_expired, 0);
2958 baid_data->mvm = mvm;
2959 baid_data->tid = tid;
2960 baid_data->sta_mask = iwl_mvm_sta_fw_id_mask(mvm, sta, -1);
2961 baid_data->buf_size = buf_size;
2962
2963 mvm_sta->tid_to_baid[tid] = baid;
2964 if (timeout)
2965 mod_timer(&baid_data->session_timer,
2966 TU_TO_EXP_TIME(timeout * 2));
2967
2968 iwl_mvm_init_reorder_buffer(mvm, baid_data, ssn);
2969 /*
2970 * protect the BA data with RCU to cover a case where our
2971 * internal RX sync mechanism will timeout (not that it's
2972 * supposed to happen) and we will free the session data while
2973 * RX is being processed in parallel
2974 */
2975 IWL_DEBUG_HT(mvm, "Sta %d(%d) is assigned to BAID %d\n",
2976 mvm_sta->deflink.sta_id, tid, baid);
2977 WARN_ON(rcu_access_pointer(mvm->baid_map[baid]));
2978 rcu_assign_pointer(mvm->baid_map[baid], baid_data);
2979 } else {
2980 baid = mvm_sta->tid_to_baid[tid];
2981
2982 if (mvm->rx_ba_sessions > 0)
2983 /* check that restart flow didn't zero the counter */
2984 mvm->rx_ba_sessions--;
2985 if (!iwl_mvm_has_new_rx_api(mvm))
2986 return 0;
2987
2988 if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID))
2989 return -EINVAL;
2990
2991 baid_data = rcu_access_pointer(mvm->baid_map[baid]);
2992 if (WARN_ON(!baid_data))
2993 return -EINVAL;
2994
2995 /* synchronize all rx queues so we can safely delete */
2996 iwl_mvm_free_reorder(mvm, baid_data);
2997 timer_shutdown_sync(&baid_data->session_timer);
2998 RCU_INIT_POINTER(mvm->baid_map[baid], NULL);
2999 kfree_rcu(baid_data, rcu_head);
3000 IWL_DEBUG_HT(mvm, "BAID %d is free\n", baid);
3001 }
3002 return 0;
3003
3004 out_free:
3005 kfree(baid_data);
3006 return ret;
3007 }
3008
iwl_mvm_sta_tx_agg(struct iwl_mvm * mvm,struct ieee80211_sta * sta,int tid,u8 queue,bool start)3009 int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
3010 int tid, u8 queue, bool start)
3011 {
3012 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3013 struct iwl_mvm_add_sta_cmd cmd = {};
3014 int ret;
3015 u32 status;
3016
3017 lockdep_assert_held(&mvm->mutex);
3018
3019 if (start) {
3020 mvm_sta->tfd_queue_msk |= BIT(queue);
3021 mvm_sta->tid_disable_agg &= ~BIT(tid);
3022 } else {
3023 /* In DQA-mode the queue isn't removed on agg termination */
3024 mvm_sta->tid_disable_agg |= BIT(tid);
3025 }
3026
3027 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color);
3028 cmd.sta_id = mvm_sta->deflink.sta_id;
3029 cmd.add_modify = STA_MODE_MODIFY;
3030 if (!iwl_mvm_has_new_tx_api(mvm))
3031 cmd.modify_mask = STA_MODIFY_QUEUES;
3032 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX;
3033 cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk);
3034 cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg);
3035
3036 status = ADD_STA_SUCCESS;
3037 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
3038 iwl_mvm_add_sta_cmd_size(mvm),
3039 &cmd, &status);
3040 if (ret)
3041 return ret;
3042
3043 switch (status & IWL_ADD_STA_STATUS_MASK) {
3044 case ADD_STA_SUCCESS:
3045 break;
3046 default:
3047 ret = -EIO;
3048 IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n",
3049 start ? "start" : "stopp", status);
3050 break;
3051 }
3052
3053 return ret;
3054 }
3055
3056 const u8 tid_to_mac80211_ac[] = {
3057 IEEE80211_AC_BE,
3058 IEEE80211_AC_BK,
3059 IEEE80211_AC_BK,
3060 IEEE80211_AC_BE,
3061 IEEE80211_AC_VI,
3062 IEEE80211_AC_VI,
3063 IEEE80211_AC_VO,
3064 IEEE80211_AC_VO,
3065 IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */
3066 };
3067
3068 static const u8 tid_to_ucode_ac[] = {
3069 AC_BE,
3070 AC_BK,
3071 AC_BK,
3072 AC_BE,
3073 AC_VI,
3074 AC_VI,
3075 AC_VO,
3076 AC_VO,
3077 };
3078
iwl_mvm_sta_tx_agg_start(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * sta,u16 tid,u16 * ssn)3079 int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
3080 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3081 {
3082 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3083 struct iwl_mvm_tid_data *tid_data;
3084 u16 normalized_ssn;
3085 u16 txq_id;
3086 int ret;
3087
3088 if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT))
3089 return -EINVAL;
3090
3091 if (mvmsta->tid_data[tid].state != IWL_AGG_QUEUED &&
3092 mvmsta->tid_data[tid].state != IWL_AGG_OFF) {
3093 IWL_ERR(mvm,
3094 "Start AGG when state is not IWL_AGG_QUEUED or IWL_AGG_OFF %d!\n",
3095 mvmsta->tid_data[tid].state);
3096 return -ENXIO;
3097 }
3098
3099 lockdep_assert_held(&mvm->mutex);
3100
3101 if (mvmsta->tid_data[tid].txq_id == IWL_MVM_INVALID_QUEUE &&
3102 iwl_mvm_has_new_tx_api(mvm)) {
3103 u8 ac = tid_to_mac80211_ac[tid];
3104
3105 ret = iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid);
3106 if (ret)
3107 return ret;
3108 }
3109
3110 spin_lock_bh(&mvmsta->lock);
3111
3112 /*
3113 * Note the possible cases:
3114 * 1. An enabled TXQ - TXQ needs to become agg'ed
3115 * 2. The TXQ hasn't yet been enabled, so find a free one and mark
3116 * it as reserved
3117 */
3118 txq_id = mvmsta->tid_data[tid].txq_id;
3119 if (txq_id == IWL_MVM_INVALID_QUEUE) {
3120 ret = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id,
3121 IWL_MVM_DQA_MIN_DATA_QUEUE,
3122 IWL_MVM_DQA_MAX_DATA_QUEUE);
3123 if (ret < 0) {
3124 IWL_ERR(mvm, "Failed to allocate agg queue\n");
3125 goto out;
3126 }
3127
3128 txq_id = ret;
3129
3130 /* TXQ hasn't yet been enabled, so mark it only as reserved */
3131 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED;
3132 } else if (WARN_ON(txq_id >= IWL_MAX_HW_QUEUES)) {
3133 ret = -ENXIO;
3134 IWL_ERR(mvm, "tid_id %d out of range (0, %d)!\n",
3135 tid, IWL_MAX_HW_QUEUES - 1);
3136 goto out;
3137
3138 } else if (unlikely(mvm->queue_info[txq_id].status ==
3139 IWL_MVM_QUEUE_SHARED)) {
3140 ret = -ENXIO;
3141 IWL_DEBUG_TX_QUEUES(mvm,
3142 "Can't start tid %d agg on shared queue!\n",
3143 tid);
3144 goto out;
3145 }
3146
3147 IWL_DEBUG_TX_QUEUES(mvm,
3148 "AGG for tid %d will be on queue #%d\n",
3149 tid, txq_id);
3150
3151 tid_data = &mvmsta->tid_data[tid];
3152 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
3153 tid_data->txq_id = txq_id;
3154 *ssn = tid_data->ssn;
3155
3156 IWL_DEBUG_TX_QUEUES(mvm,
3157 "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n",
3158 mvmsta->deflink.sta_id, tid, txq_id,
3159 tid_data->ssn,
3160 tid_data->next_reclaimed);
3161
3162 /*
3163 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need
3164 * to align the wrap around of ssn so we compare relevant values.
3165 */
3166 normalized_ssn = tid_data->ssn;
3167 if (mvm->trans->mac_cfg->gen2)
3168 normalized_ssn &= 0xff;
3169
3170 if (normalized_ssn == tid_data->next_reclaimed) {
3171 tid_data->state = IWL_AGG_STARTING;
3172 ret = IEEE80211_AMPDU_TX_START_IMMEDIATE;
3173 } else {
3174 tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA;
3175 ret = IEEE80211_AMPDU_TX_START_DELAY_ADDBA;
3176 }
3177
3178 out:
3179 spin_unlock_bh(&mvmsta->lock);
3180
3181 return ret;
3182 }
3183
iwl_mvm_sta_tx_agg_oper(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * sta,u16 tid,u16 buf_size,bool amsdu)3184 int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
3185 struct ieee80211_sta *sta, u16 tid, u16 buf_size,
3186 bool amsdu)
3187 {
3188 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3189 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
3190 unsigned int wdg_timeout =
3191 iwl_mvm_get_wd_timeout(mvm, vif);
3192 int queue, ret;
3193 bool alloc_queue = true;
3194 enum iwl_mvm_queue_status queue_status;
3195 u16 ssn;
3196
3197 struct iwl_trans_txq_scd_cfg cfg = {
3198 .sta_id = mvmsta->deflink.sta_id,
3199 .tid = tid,
3200 .frame_limit = buf_size,
3201 .aggregate = true,
3202 };
3203
3204 /*
3205 * When FW supports TLC_OFFLOAD, it also implements Tx aggregation
3206 * manager, so this function should never be called in this case.
3207 */
3208 if (WARN_ON_ONCE(iwl_mvm_has_tlc_offload(mvm)))
3209 return -EINVAL;
3210
3211 BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE)
3212 != IWL_MAX_TID_COUNT);
3213
3214 spin_lock_bh(&mvmsta->lock);
3215 ssn = tid_data->ssn;
3216 queue = tid_data->txq_id;
3217 tid_data->state = IWL_AGG_ON;
3218 mvmsta->agg_tids |= BIT(tid);
3219 tid_data->ssn = 0xffff;
3220 tid_data->amsdu_in_ampdu_allowed = amsdu;
3221 spin_unlock_bh(&mvmsta->lock);
3222
3223 if (iwl_mvm_has_new_tx_api(mvm)) {
3224 /*
3225 * If there is no queue for this tid, iwl_mvm_sta_tx_agg_start()
3226 * would have failed, so if we are here there is no need to
3227 * allocate a queue.
3228 * However, if aggregation size is different than the default
3229 * size, the scheduler should be reconfigured.
3230 * We cannot do this with the new TX API, so return unsupported
3231 * for now, until it will be offloaded to firmware..
3232 * Note that if SCD default value changes - this condition
3233 * should be updated as well.
3234 */
3235 if (buf_size < IWL_FRAME_LIMIT)
3236 return -EOPNOTSUPP;
3237
3238 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);
3239 if (ret)
3240 return -EIO;
3241 goto out;
3242 }
3243
3244 cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]];
3245
3246 queue_status = mvm->queue_info[queue].status;
3247
3248 /* Maybe there is no need to even alloc a queue... */
3249 if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY)
3250 alloc_queue = false;
3251
3252 /*
3253 * Only reconfig the SCD for the queue if the window size has
3254 * changed from current (become smaller)
3255 */
3256 if (!alloc_queue && buf_size < IWL_FRAME_LIMIT) {
3257 /*
3258 * If reconfiguring an existing queue, it first must be
3259 * drained
3260 */
3261 ret = iwl_trans_wait_tx_queues_empty(mvm->trans,
3262 BIT(queue));
3263 if (ret) {
3264 IWL_ERR(mvm,
3265 "Error draining queue before reconfig\n");
3266 return ret;
3267 }
3268
3269 ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo,
3270 mvmsta->deflink.sta_id, tid,
3271 buf_size, ssn);
3272 if (ret) {
3273 IWL_ERR(mvm,
3274 "Error reconfiguring TXQ #%d\n", queue);
3275 return ret;
3276 }
3277 }
3278
3279 if (alloc_queue)
3280 iwl_mvm_enable_txq(mvm, sta, queue, ssn,
3281 &cfg, wdg_timeout);
3282
3283 /* Send ADD_STA command to enable aggs only if the queue isn't shared */
3284 if (queue_status != IWL_MVM_QUEUE_SHARED) {
3285 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);
3286 if (ret)
3287 return -EIO;
3288 }
3289
3290 /* No need to mark as reserved */
3291 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY;
3292
3293 out:
3294 /*
3295 * Even though in theory the peer could have different
3296 * aggregation reorder buffer sizes for different sessions,
3297 * our ucode doesn't allow for that and has a global limit
3298 * for each station. Therefore, use the minimum of all the
3299 * aggregation sessions and our default value.
3300 */
3301 mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize =
3302 min(mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize,
3303 buf_size);
3304 mvmsta->deflink.lq_sta.rs_drv.lq.agg_frame_cnt_limit =
3305 mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize;
3306
3307 IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n",
3308 sta->addr, tid);
3309
3310 return iwl_mvm_send_lq_cmd(mvm, &mvmsta->deflink.lq_sta.rs_drv.lq);
3311 }
3312
iwl_mvm_unreserve_agg_queue(struct iwl_mvm * mvm,struct iwl_mvm_sta * mvmsta,struct iwl_mvm_tid_data * tid_data)3313 static void iwl_mvm_unreserve_agg_queue(struct iwl_mvm *mvm,
3314 struct iwl_mvm_sta *mvmsta,
3315 struct iwl_mvm_tid_data *tid_data)
3316 {
3317 u16 txq_id = tid_data->txq_id;
3318
3319 lockdep_assert_held(&mvm->mutex);
3320
3321 if (iwl_mvm_has_new_tx_api(mvm))
3322 return;
3323
3324 /*
3325 * The TXQ is marked as reserved only if no traffic came through yet
3326 * This means no traffic has been sent on this TID (agg'd or not), so
3327 * we no longer have use for the queue. Since it hasn't even been
3328 * allocated through iwl_mvm_enable_txq, so we can just mark it back as
3329 * free.
3330 */
3331 if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) {
3332 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE;
3333 tid_data->txq_id = IWL_MVM_INVALID_QUEUE;
3334 }
3335 }
3336
iwl_mvm_sta_tx_agg_stop(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * sta,u16 tid)3337 int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
3338 struct ieee80211_sta *sta, u16 tid)
3339 {
3340 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3341 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
3342 u16 txq_id;
3343 int err;
3344
3345 /*
3346 * If mac80211 is cleaning its state, then say that we finished since
3347 * our state has been cleared anyway.
3348 */
3349 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
3350 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
3351 return 0;
3352 }
3353
3354 spin_lock_bh(&mvmsta->lock);
3355
3356 txq_id = tid_data->txq_id;
3357
3358 IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n",
3359 mvmsta->deflink.sta_id, tid, txq_id,
3360 tid_data->state);
3361
3362 mvmsta->agg_tids &= ~BIT(tid);
3363
3364 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data);
3365
3366 switch (tid_data->state) {
3367 case IWL_AGG_ON:
3368 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
3369
3370 IWL_DEBUG_TX_QUEUES(mvm,
3371 "ssn = %d, next_recl = %d\n",
3372 tid_data->ssn, tid_data->next_reclaimed);
3373
3374 tid_data->ssn = 0xffff;
3375 tid_data->state = IWL_AGG_OFF;
3376 spin_unlock_bh(&mvmsta->lock);
3377
3378 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
3379
3380 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false);
3381 return 0;
3382 case IWL_AGG_STARTING:
3383 case IWL_EMPTYING_HW_QUEUE_ADDBA:
3384 /*
3385 * The agg session has been stopped before it was set up. This
3386 * can happen when the AddBA timer times out for example.
3387 */
3388
3389 /* No barriers since we are under mutex */
3390 lockdep_assert_held(&mvm->mutex);
3391
3392 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
3393 tid_data->state = IWL_AGG_OFF;
3394 err = 0;
3395 break;
3396 default:
3397 IWL_ERR(mvm,
3398 "Stopping AGG while state not ON or starting for %d on %d (%d)\n",
3399 mvmsta->deflink.sta_id, tid, tid_data->state);
3400 IWL_ERR(mvm,
3401 "\ttid_data->txq_id = %d\n", tid_data->txq_id);
3402 err = -EINVAL;
3403 }
3404
3405 spin_unlock_bh(&mvmsta->lock);
3406
3407 return err;
3408 }
3409
iwl_mvm_sta_tx_agg_flush(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * sta,u16 tid)3410 int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
3411 struct ieee80211_sta *sta, u16 tid)
3412 {
3413 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3414 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
3415 u16 txq_id;
3416 enum iwl_mvm_agg_state old_state;
3417
3418 /*
3419 * First set the agg state to OFF to avoid calling
3420 * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty.
3421 */
3422 spin_lock_bh(&mvmsta->lock);
3423 txq_id = tid_data->txq_id;
3424 IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n",
3425 mvmsta->deflink.sta_id, tid, txq_id,
3426 tid_data->state);
3427 old_state = tid_data->state;
3428 tid_data->state = IWL_AGG_OFF;
3429 mvmsta->agg_tids &= ~BIT(tid);
3430 spin_unlock_bh(&mvmsta->lock);
3431
3432 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data);
3433
3434 if (old_state >= IWL_AGG_ON) {
3435 iwl_mvm_drain_sta(mvm, mvmsta, true);
3436
3437 if (iwl_mvm_has_new_tx_api(mvm)) {
3438 if (iwl_mvm_flush_sta_tids(mvm, mvmsta->deflink.sta_id,
3439 BIT(tid)))
3440 IWL_ERR(mvm, "Couldn't flush the AGG queue\n");
3441 iwl_trans_wait_txq_empty(mvm->trans, txq_id);
3442 } else {
3443 if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id)))
3444 IWL_ERR(mvm, "Couldn't flush the AGG queue\n");
3445 iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(txq_id));
3446 }
3447
3448 iwl_mvm_drain_sta(mvm, mvmsta, false);
3449
3450 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false);
3451 }
3452
3453 return 0;
3454 }
3455
iwl_mvm_set_fw_key_idx(struct iwl_mvm * mvm)3456 static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm)
3457 {
3458 int i, max = -1, max_offs = -1;
3459
3460 lockdep_assert_held(&mvm->mutex);
3461
3462 /* Pick the unused key offset with the highest 'deleted'
3463 * counter. Every time a key is deleted, all the counters
3464 * are incremented and the one that was just deleted is
3465 * reset to zero. Thus, the highest counter is the one
3466 * that was deleted longest ago. Pick that one.
3467 */
3468 for (i = 0; i < STA_KEY_MAX_NUM; i++) {
3469 if (test_bit(i, mvm->fw_key_table))
3470 continue;
3471 if (mvm->fw_key_deleted[i] > max) {
3472 max = mvm->fw_key_deleted[i];
3473 max_offs = i;
3474 }
3475 }
3476
3477 if (max_offs < 0)
3478 return STA_KEY_IDX_INVALID;
3479
3480 return max_offs;
3481 }
3482
iwl_mvm_get_key_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * sta)3483 static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm,
3484 struct ieee80211_vif *vif,
3485 struct ieee80211_sta *sta)
3486 {
3487 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3488
3489 if (sta)
3490 return iwl_mvm_sta_from_mac80211(sta);
3491
3492 /*
3493 * The device expects GTKs for station interfaces to be
3494 * installed as GTKs for the AP station. If we have no
3495 * station ID, then use AP's station ID.
3496 */
3497 if (vif->type == NL80211_IFTYPE_STATION &&
3498 mvmvif->deflink.ap_sta_id != IWL_INVALID_STA) {
3499 u8 sta_id = mvmvif->deflink.ap_sta_id;
3500
3501 sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id],
3502 lockdep_is_held(&mvm->mutex));
3503
3504 /*
3505 * It is possible that the 'sta' parameter is NULL,
3506 * for example when a GTK is removed - the sta_id will then
3507 * be the AP ID, and no station was passed by mac80211.
3508 */
3509 if (IS_ERR_OR_NULL(sta))
3510 return NULL;
3511
3512 return iwl_mvm_sta_from_mac80211(sta);
3513 }
3514
3515 return NULL;
3516 }
3517
iwl_mvm_pn_cmp(const u8 * pn1,const u8 * pn2,int len)3518 static int iwl_mvm_pn_cmp(const u8 *pn1, const u8 *pn2, int len)
3519 {
3520 int i;
3521
3522 for (i = len - 1; i >= 0; i--) {
3523 if (pn1[i] > pn2[i])
3524 return 1;
3525 if (pn1[i] < pn2[i])
3526 return -1;
3527 }
3528
3529 return 0;
3530 }
3531
iwl_mvm_send_sta_key(struct iwl_mvm * mvm,u32 sta_id,struct ieee80211_key_conf * key,bool mcast,u32 tkip_iv32,u16 * tkip_p1k,u32 cmd_flags,u8 key_offset,bool mfp)3532 static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm,
3533 u32 sta_id,
3534 struct ieee80211_key_conf *key, bool mcast,
3535 u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags,
3536 u8 key_offset, bool mfp)
3537 {
3538 union {
3539 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1;
3540 struct iwl_mvm_add_sta_key_cmd cmd;
3541 } u = {};
3542 __le16 key_flags;
3543 int ret;
3544 u32 status;
3545 u16 keyidx;
3546 u64 pn = 0;
3547 int i, size;
3548 bool new_api = fw_has_api(&mvm->fw->ucode_capa,
3549 IWL_UCODE_TLV_API_TKIP_MIC_KEYS);
3550 int api_ver = iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA_KEY,
3551 new_api ? 2 : 1);
3552
3553 if (sta_id == IWL_INVALID_STA)
3554 return -EINVAL;
3555
3556 keyidx = (key->keyidx << STA_KEY_FLG_KEYID_POS) &
3557 STA_KEY_FLG_KEYID_MSK;
3558 key_flags = cpu_to_le16(keyidx);
3559 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP);
3560
3561 if (key->flags & IEEE80211_KEY_FLAG_SPP_AMSDU)
3562 key_flags |= cpu_to_le16(STA_KEY_FLG_AMSDU_SPP);
3563
3564 switch (key->cipher) {
3565 case WLAN_CIPHER_SUITE_TKIP:
3566 key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP);
3567 if (api_ver >= 2) {
3568 memcpy((void *)&u.cmd.tx_mic_key,
3569 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
3570 IWL_MIC_KEY_SIZE);
3571
3572 memcpy((void *)&u.cmd.rx_mic_key,
3573 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
3574 IWL_MIC_KEY_SIZE);
3575 pn = atomic64_read(&key->tx_pn);
3576
3577 } else {
3578 u.cmd_v1.tkip_rx_tsc_byte2 = tkip_iv32;
3579 for (i = 0; i < 5; i++)
3580 u.cmd_v1.tkip_rx_ttak[i] =
3581 cpu_to_le16(tkip_p1k[i]);
3582 }
3583 memcpy(u.cmd.common.key, key->key, key->keylen);
3584 break;
3585 case WLAN_CIPHER_SUITE_CCMP:
3586 key_flags |= cpu_to_le16(STA_KEY_FLG_CCM);
3587 memcpy(u.cmd.common.key, key->key, key->keylen);
3588 if (api_ver >= 2)
3589 pn = atomic64_read(&key->tx_pn);
3590 break;
3591 case WLAN_CIPHER_SUITE_WEP104:
3592 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES);
3593 fallthrough;
3594 case WLAN_CIPHER_SUITE_WEP40:
3595 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP);
3596 memcpy(u.cmd.common.key + 3, key->key, key->keylen);
3597 break;
3598 case WLAN_CIPHER_SUITE_GCMP_256:
3599 key_flags |= cpu_to_le16(STA_KEY_FLG_KEY_32BYTES);
3600 fallthrough;
3601 case WLAN_CIPHER_SUITE_GCMP:
3602 key_flags |= cpu_to_le16(STA_KEY_FLG_GCMP);
3603 memcpy(u.cmd.common.key, key->key, key->keylen);
3604 if (api_ver >= 2)
3605 pn = atomic64_read(&key->tx_pn);
3606 break;
3607 default:
3608 key_flags |= cpu_to_le16(STA_KEY_FLG_EXT);
3609 memcpy(u.cmd.common.key, key->key, key->keylen);
3610 }
3611
3612 if (mcast)
3613 key_flags |= cpu_to_le16(STA_KEY_MULTICAST);
3614 if (mfp)
3615 key_flags |= cpu_to_le16(STA_KEY_MFP);
3616
3617 u.cmd.common.key_offset = key_offset;
3618 u.cmd.common.key_flags = key_flags;
3619 u.cmd.common.sta_id = sta_id;
3620
3621 if (key->cipher == WLAN_CIPHER_SUITE_TKIP)
3622 i = 0;
3623 else
3624 i = -1;
3625
3626 for (; i < IEEE80211_NUM_TIDS; i++) {
3627 struct ieee80211_key_seq seq = {};
3628 u8 _rx_pn[IEEE80211_MAX_PN_LEN] = {}, *rx_pn = _rx_pn;
3629 int rx_pn_len = 8;
3630 /* there's a hole at 2/3 in FW format depending on version */
3631 int hole = api_ver >= 3 ? 0 : 2;
3632
3633 ieee80211_get_key_rx_seq(key, i, &seq);
3634
3635 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) {
3636 rx_pn[0] = seq.tkip.iv16;
3637 rx_pn[1] = seq.tkip.iv16 >> 8;
3638 rx_pn[2 + hole] = seq.tkip.iv32;
3639 rx_pn[3 + hole] = seq.tkip.iv32 >> 8;
3640 rx_pn[4 + hole] = seq.tkip.iv32 >> 16;
3641 rx_pn[5 + hole] = seq.tkip.iv32 >> 24;
3642 } else if (key_flags & cpu_to_le16(STA_KEY_FLG_EXT)) {
3643 rx_pn = seq.hw.seq;
3644 rx_pn_len = seq.hw.seq_len;
3645 } else {
3646 rx_pn[0] = seq.ccmp.pn[0];
3647 rx_pn[1] = seq.ccmp.pn[1];
3648 rx_pn[2 + hole] = seq.ccmp.pn[2];
3649 rx_pn[3 + hole] = seq.ccmp.pn[3];
3650 rx_pn[4 + hole] = seq.ccmp.pn[4];
3651 rx_pn[5 + hole] = seq.ccmp.pn[5];
3652 }
3653
3654 if (iwl_mvm_pn_cmp(rx_pn, (u8 *)&u.cmd.common.rx_secur_seq_cnt,
3655 rx_pn_len) > 0)
3656 memcpy(&u.cmd.common.rx_secur_seq_cnt, rx_pn,
3657 rx_pn_len);
3658 }
3659
3660 if (api_ver >= 2) {
3661 u.cmd.transmit_seq_cnt = cpu_to_le64(pn);
3662 size = sizeof(u.cmd);
3663 } else {
3664 size = sizeof(u.cmd_v1);
3665 }
3666
3667 status = ADD_STA_SUCCESS;
3668 if (cmd_flags & CMD_ASYNC)
3669 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, size,
3670 &u.cmd);
3671 else
3672 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size,
3673 &u.cmd, &status);
3674
3675 switch (status) {
3676 case ADD_STA_SUCCESS:
3677 IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n");
3678 break;
3679 default:
3680 ret = -EIO;
3681 IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n");
3682 break;
3683 }
3684
3685 return ret;
3686 }
3687
iwl_mvm_send_sta_igtk(struct iwl_mvm * mvm,struct ieee80211_key_conf * keyconf,u8 sta_id,bool remove_key)3688 static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm,
3689 struct ieee80211_key_conf *keyconf,
3690 u8 sta_id, bool remove_key)
3691 {
3692 struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {};
3693
3694 /* verify the key details match the required command's expectations */
3695 if (WARN_ON((keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) ||
3696 (keyconf->keyidx != 4 && keyconf->keyidx != 5 &&
3697 keyconf->keyidx != 6 && keyconf->keyidx != 7) ||
3698 (keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC &&
3699 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_128 &&
3700 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_256)))
3701 return -EINVAL;
3702
3703 if (WARN_ON(!iwl_mvm_has_new_rx_api(mvm) &&
3704 keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC))
3705 return -EINVAL;
3706
3707 igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx);
3708 igtk_cmd.sta_id = cpu_to_le32(sta_id);
3709
3710 if (remove_key) {
3711 /* This is a valid situation for IGTK */
3712 if (sta_id == IWL_INVALID_STA)
3713 return 0;
3714
3715 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID);
3716 } else {
3717 struct ieee80211_key_seq seq;
3718 const u8 *pn;
3719
3720 switch (keyconf->cipher) {
3721 case WLAN_CIPHER_SUITE_AES_CMAC:
3722 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM);
3723 break;
3724 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
3725 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
3726 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_GCMP);
3727 break;
3728 default:
3729 return -EINVAL;
3730 }
3731
3732 memcpy(igtk_cmd.igtk, keyconf->key, keyconf->keylen);
3733 if (keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
3734 igtk_cmd.ctrl_flags |=
3735 cpu_to_le32(STA_KEY_FLG_KEY_32BYTES);
3736 ieee80211_get_key_rx_seq(keyconf, 0, &seq);
3737 pn = seq.aes_cmac.pn;
3738 igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) |
3739 ((u64) pn[4] << 8) |
3740 ((u64) pn[3] << 16) |
3741 ((u64) pn[2] << 24) |
3742 ((u64) pn[1] << 32) |
3743 ((u64) pn[0] << 40));
3744 }
3745
3746 IWL_DEBUG_INFO(mvm, "%s %sIGTK (%d) for sta %u\n",
3747 remove_key ? "removing" : "installing",
3748 keyconf->keyidx >= 6 ? "B" : "",
3749 keyconf->keyidx, igtk_cmd.sta_id);
3750
3751 if (!iwl_mvm_has_new_rx_api(mvm)) {
3752 struct iwl_mvm_mgmt_mcast_key_cmd_v1 igtk_cmd_v1 = {
3753 .ctrl_flags = igtk_cmd.ctrl_flags,
3754 .key_id = igtk_cmd.key_id,
3755 .sta_id = igtk_cmd.sta_id,
3756 .receive_seq_cnt = igtk_cmd.receive_seq_cnt
3757 };
3758
3759 memcpy(igtk_cmd_v1.igtk, igtk_cmd.igtk,
3760 ARRAY_SIZE(igtk_cmd_v1.igtk));
3761 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0,
3762 sizeof(igtk_cmd_v1), &igtk_cmd_v1);
3763 }
3764 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0,
3765 sizeof(igtk_cmd), &igtk_cmd);
3766 }
3767
3768
iwl_mvm_get_mac_addr(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * sta)3769 static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm,
3770 struct ieee80211_vif *vif,
3771 struct ieee80211_sta *sta)
3772 {
3773 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3774
3775 if (sta)
3776 return sta->addr;
3777
3778 if (vif->type == NL80211_IFTYPE_STATION &&
3779 mvmvif->deflink.ap_sta_id != IWL_INVALID_STA) {
3780 u8 sta_id = mvmvif->deflink.ap_sta_id;
3781 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
3782 lockdep_is_held(&mvm->mutex));
3783 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
3784 return NULL;
3785
3786 return sta->addr;
3787 }
3788
3789
3790 return NULL;
3791 }
3792
__iwl_mvm_set_sta_key(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * keyconf,u8 key_offset,bool mcast)3793 static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm,
3794 struct ieee80211_vif *vif,
3795 struct ieee80211_sta *sta,
3796 struct ieee80211_key_conf *keyconf,
3797 u8 key_offset,
3798 bool mcast)
3799 {
3800 const u8 *addr;
3801 struct ieee80211_key_seq seq;
3802 u16 p1k[5];
3803 u32 sta_id;
3804 bool mfp = false;
3805
3806 if (sta) {
3807 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3808
3809 sta_id = mvm_sta->deflink.sta_id;
3810 mfp = sta->mfp;
3811 } else if (vif->type == NL80211_IFTYPE_AP &&
3812 !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
3813 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3814
3815 sta_id = mvmvif->deflink.mcast_sta.sta_id;
3816 } else {
3817 IWL_ERR(mvm, "Failed to find station id\n");
3818 return -EINVAL;
3819 }
3820
3821 if (keyconf->cipher == WLAN_CIPHER_SUITE_TKIP) {
3822 addr = iwl_mvm_get_mac_addr(mvm, vif, sta);
3823 if (!addr) {
3824 IWL_ERR(mvm, "Failed to find mac address\n");
3825 return -EINVAL;
3826 }
3827
3828 /* get phase 1 key from mac80211 */
3829 ieee80211_get_key_rx_seq(keyconf, 0, &seq);
3830 ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k);
3831
3832 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast,
3833 seq.tkip.iv32, p1k, 0, key_offset,
3834 mfp);
3835 }
3836
3837 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast,
3838 0, NULL, 0, key_offset, mfp);
3839 }
3840
iwl_mvm_set_sta_key(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * keyconf,u8 key_offset)3841 int iwl_mvm_set_sta_key(struct iwl_mvm *mvm,
3842 struct ieee80211_vif *vif,
3843 struct ieee80211_sta *sta,
3844 struct ieee80211_key_conf *keyconf,
3845 u8 key_offset)
3846 {
3847 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
3848 struct iwl_mvm_sta *mvm_sta;
3849 u8 sta_id = IWL_INVALID_STA;
3850 int ret;
3851 static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0};
3852
3853 lockdep_assert_held(&mvm->mutex);
3854
3855 if (vif->type != NL80211_IFTYPE_AP ||
3856 keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
3857 /* Get the station id from the mvm local station table */
3858 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta);
3859 if (!mvm_sta) {
3860 IWL_ERR(mvm, "Failed to find station\n");
3861 return -EINVAL;
3862 }
3863 sta_id = mvm_sta->deflink.sta_id;
3864
3865 /*
3866 * It is possible that the 'sta' parameter is NULL, and thus
3867 * there is a need to retrieve the sta from the local station
3868 * table.
3869 */
3870 if (!sta) {
3871 sta = rcu_dereference_protected(
3872 mvm->fw_id_to_mac_id[sta_id],
3873 lockdep_is_held(&mvm->mutex));
3874 if (IS_ERR_OR_NULL(sta)) {
3875 IWL_ERR(mvm, "Invalid station id\n");
3876 return -EINVAL;
3877 }
3878 }
3879
3880 if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif))
3881 return -EINVAL;
3882 } else {
3883 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3884
3885 sta_id = mvmvif->deflink.mcast_sta.sta_id;
3886 }
3887
3888 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
3889 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
3890 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) {
3891 ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false);
3892 goto end;
3893 }
3894
3895 /* If the key_offset is not pre-assigned, we need to find a
3896 * new offset to use. In normal cases, the offset is not
3897 * pre-assigned, but during HW_RESTART we want to reuse the
3898 * same indices, so we pass them when this function is called.
3899 *
3900 * In D3 entry, we need to hardcoded the indices (because the
3901 * firmware hardcodes the PTK offset to 0). In this case, we
3902 * need to make sure we don't overwrite the hw_key_idx in the
3903 * keyconf structure, because otherwise we cannot configure
3904 * the original ones back when resuming.
3905 */
3906 if (key_offset == STA_KEY_IDX_INVALID) {
3907 key_offset = iwl_mvm_set_fw_key_idx(mvm);
3908 if (key_offset == STA_KEY_IDX_INVALID)
3909 return -ENOSPC;
3910 keyconf->hw_key_idx = key_offset;
3911 }
3912
3913 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast);
3914 if (ret)
3915 goto end;
3916
3917 /*
3918 * For WEP, the same key is used for multicast and unicast. Upload it
3919 * again, using the same key offset, and now pointing the other one
3920 * to the same key slot (offset).
3921 * If this fails, remove the original as well.
3922 */
3923 if ((keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 ||
3924 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) &&
3925 sta) {
3926 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf,
3927 key_offset, !mcast);
3928 if (ret) {
3929 __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast);
3930 goto end;
3931 }
3932 }
3933
3934 __set_bit(key_offset, mvm->fw_key_table);
3935
3936 end:
3937 IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n",
3938 keyconf->cipher, keyconf->keylen, keyconf->keyidx,
3939 sta ? sta->addr : zero_addr, ret);
3940 return ret;
3941 }
3942
iwl_mvm_remove_sta_key(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * keyconf)3943 int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm,
3944 struct ieee80211_vif *vif,
3945 struct ieee80211_sta *sta,
3946 struct ieee80211_key_conf *keyconf)
3947 {
3948 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
3949 struct iwl_mvm_sta *mvm_sta;
3950 u8 sta_id = IWL_INVALID_STA;
3951 int ret, i;
3952
3953 lockdep_assert_held(&mvm->mutex);
3954
3955 /* Get the station from the mvm local station table */
3956 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta);
3957 if (mvm_sta)
3958 sta_id = mvm_sta->deflink.sta_id;
3959 else if (!sta && vif->type == NL80211_IFTYPE_AP && mcast)
3960 sta_id = iwl_mvm_vif_from_mac80211(vif)->deflink.mcast_sta.sta_id;
3961
3962
3963 IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n",
3964 keyconf->keyidx, sta_id);
3965
3966 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
3967 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
3968 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
3969 return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true);
3970
3971 if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) {
3972 IWL_ERR(mvm, "offset %d not used in fw key table.\n",
3973 keyconf->hw_key_idx);
3974 return -ENOENT;
3975 }
3976
3977 /* track which key was deleted last */
3978 for (i = 0; i < STA_KEY_MAX_NUM; i++) {
3979 if (mvm->fw_key_deleted[i] < U8_MAX)
3980 mvm->fw_key_deleted[i]++;
3981 }
3982 mvm->fw_key_deleted[keyconf->hw_key_idx] = 0;
3983
3984 if (sta && !mvm_sta) {
3985 IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n");
3986 return 0;
3987 }
3988
3989 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast);
3990 if (ret)
3991 return ret;
3992
3993 /* delete WEP key twice to get rid of (now useless) offset */
3994 if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 ||
3995 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104)
3996 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast);
3997
3998 return ret;
3999 }
4000
iwl_mvm_update_tkip_key(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_key_conf * keyconf,struct ieee80211_sta * sta,u32 iv32,u16 * phase1key)4001 void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm,
4002 struct ieee80211_vif *vif,
4003 struct ieee80211_key_conf *keyconf,
4004 struct ieee80211_sta *sta, u32 iv32,
4005 u16 *phase1key)
4006 {
4007 struct iwl_mvm_sta *mvm_sta;
4008 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
4009 bool mfp = sta ? sta->mfp : false;
4010
4011 rcu_read_lock();
4012
4013 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta);
4014 if (WARN_ON_ONCE(!mvm_sta))
4015 goto unlock;
4016 iwl_mvm_send_sta_key(mvm, mvm_sta->deflink.sta_id, keyconf, mcast,
4017 iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx,
4018 mfp);
4019
4020 unlock:
4021 rcu_read_unlock();
4022 }
4023
iwl_mvm_sta_modify_ps_wake(struct iwl_mvm * mvm,struct ieee80211_sta * sta)4024 void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm,
4025 struct ieee80211_sta *sta)
4026 {
4027 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
4028 struct iwl_mvm_add_sta_cmd cmd = {
4029 .add_modify = STA_MODE_MODIFY,
4030 .sta_id = mvmsta->deflink.sta_id,
4031 .station_flags_msk = cpu_to_le32(STA_FLG_PS),
4032 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
4033 };
4034 int ret;
4035
4036 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
4037 iwl_mvm_add_sta_cmd_size(mvm), &cmd);
4038 if (ret)
4039 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
4040 }
4041
iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm * mvm,struct ieee80211_sta * sta,enum ieee80211_frame_release_type reason,u16 cnt,u16 tids,bool more_data,bool single_sta_queue)4042 void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm,
4043 struct ieee80211_sta *sta,
4044 enum ieee80211_frame_release_type reason,
4045 u16 cnt, u16 tids, bool more_data,
4046 bool single_sta_queue)
4047 {
4048 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
4049 struct iwl_mvm_add_sta_cmd cmd = {
4050 .add_modify = STA_MODE_MODIFY,
4051 .sta_id = mvmsta->deflink.sta_id,
4052 .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT,
4053 .sleep_tx_count = cpu_to_le16(cnt),
4054 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
4055 };
4056 int tid, ret;
4057 unsigned long _tids = tids;
4058
4059 /* convert TIDs to ACs - we don't support TSPEC so that's OK
4060 * Note that this field is reserved and unused by firmware not
4061 * supporting GO uAPSD, so it's safe to always do this.
4062 */
4063 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT)
4064 cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]);
4065
4066 /* If we're releasing frames from aggregation or dqa queues then check
4067 * if all the queues that we're releasing frames from, combined, have:
4068 * - more frames than the service period, in which case more_data
4069 * needs to be set
4070 * - fewer than 'cnt' frames, in which case we need to adjust the
4071 * firmware command (but do that unconditionally)
4072 */
4073 if (single_sta_queue) {
4074 int remaining = cnt;
4075 int sleep_tx_count;
4076
4077 spin_lock_bh(&mvmsta->lock);
4078 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) {
4079 struct iwl_mvm_tid_data *tid_data;
4080 u16 n_queued;
4081
4082 tid_data = &mvmsta->tid_data[tid];
4083
4084 n_queued = iwl_mvm_tid_queued(mvm, tid_data);
4085 if (n_queued > remaining) {
4086 more_data = true;
4087 remaining = 0;
4088 break;
4089 }
4090 remaining -= n_queued;
4091 }
4092 sleep_tx_count = cnt - remaining;
4093 if (reason == IEEE80211_FRAME_RELEASE_UAPSD)
4094 mvmsta->sleep_tx_count = sleep_tx_count;
4095 spin_unlock_bh(&mvmsta->lock);
4096
4097 cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count);
4098 if (WARN_ON(cnt - remaining == 0)) {
4099 ieee80211_sta_eosp(sta);
4100 return;
4101 }
4102 }
4103
4104 /* Note: this is ignored by firmware not supporting GO uAPSD */
4105 if (more_data)
4106 cmd.sleep_state_flags |= STA_SLEEP_STATE_MOREDATA;
4107
4108 if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) {
4109 mvmsta->next_status_eosp = true;
4110 cmd.sleep_state_flags |= STA_SLEEP_STATE_PS_POLL;
4111 } else {
4112 cmd.sleep_state_flags |= STA_SLEEP_STATE_UAPSD;
4113 }
4114
4115 /* block the Tx queues until the FW updated the sleep Tx count */
4116 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA,
4117 CMD_ASYNC | CMD_BLOCK_TXQS,
4118 iwl_mvm_add_sta_cmd_size(mvm), &cmd);
4119 if (ret)
4120 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
4121 }
4122
iwl_mvm_rx_eosp_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)4123 void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm,
4124 struct iwl_rx_cmd_buffer *rxb)
4125 {
4126 struct iwl_rx_packet *pkt = rxb_addr(rxb);
4127 struct iwl_mvm_eosp_notification *notif = (void *)pkt->data;
4128 struct ieee80211_sta *sta;
4129 u32 sta_id = le32_to_cpu(notif->sta_id);
4130
4131 if (WARN_ON_ONCE(sta_id >= mvm->fw->ucode_capa.num_stations))
4132 return;
4133
4134 rcu_read_lock();
4135 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
4136 if (!IS_ERR_OR_NULL(sta))
4137 ieee80211_sta_eosp(sta);
4138 rcu_read_unlock();
4139 }
4140
iwl_mvm_sta_modify_disable_tx(struct iwl_mvm * mvm,struct iwl_mvm_sta * mvmsta,bool disable)4141 void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm,
4142 struct iwl_mvm_sta *mvmsta,
4143 bool disable)
4144 {
4145 struct iwl_mvm_add_sta_cmd cmd = {
4146 .add_modify = STA_MODE_MODIFY,
4147 .sta_id = mvmsta->deflink.sta_id,
4148 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0,
4149 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX),
4150 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
4151 };
4152 int ret;
4153
4154 if (mvm->mld_api_is_used) {
4155 if (!iwl_mvm_has_no_host_disable_tx(mvm))
4156 iwl_mvm_mld_sta_modify_disable_tx(mvm, mvmsta, disable);
4157 return;
4158 }
4159
4160 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
4161 iwl_mvm_add_sta_cmd_size(mvm), &cmd);
4162 if (ret)
4163 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
4164 }
4165
iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm * mvm,struct ieee80211_sta * sta,bool disable)4166 void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm,
4167 struct ieee80211_sta *sta,
4168 bool disable)
4169 {
4170 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
4171
4172 if (mvm->mld_api_is_used) {
4173 if (!iwl_mvm_has_no_host_disable_tx(mvm))
4174 iwl_mvm_mld_sta_modify_disable_tx_ap(mvm, sta, disable);
4175 return;
4176 }
4177
4178 spin_lock_bh(&mvm_sta->lock);
4179
4180 if (mvm_sta->disable_tx == disable) {
4181 spin_unlock_bh(&mvm_sta->lock);
4182 return;
4183 }
4184
4185 mvm_sta->disable_tx = disable;
4186
4187 /*
4188 * If sta PS state is handled by mac80211, tell it to start/stop
4189 * queuing tx for this station.
4190 */
4191 if (!ieee80211_hw_check(mvm->hw, AP_LINK_PS))
4192 ieee80211_sta_block_awake(mvm->hw, sta, disable);
4193
4194 iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable);
4195
4196 spin_unlock_bh(&mvm_sta->lock);
4197 }
4198
iwl_mvm_int_sta_modify_disable_tx(struct iwl_mvm * mvm,struct iwl_mvm_vif * mvmvif,struct iwl_mvm_int_sta * sta,bool disable)4199 static void iwl_mvm_int_sta_modify_disable_tx(struct iwl_mvm *mvm,
4200 struct iwl_mvm_vif *mvmvif,
4201 struct iwl_mvm_int_sta *sta,
4202 bool disable)
4203 {
4204 u32 id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color);
4205 struct iwl_mvm_add_sta_cmd cmd = {
4206 .add_modify = STA_MODE_MODIFY,
4207 .sta_id = sta->sta_id,
4208 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0,
4209 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX),
4210 .mac_id_n_color = cpu_to_le32(id),
4211 };
4212 int ret;
4213
4214 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
4215 iwl_mvm_add_sta_cmd_size(mvm), &cmd);
4216 if (ret)
4217 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
4218 }
4219
iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm * mvm,struct iwl_mvm_vif * mvmvif,bool disable)4220 void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm,
4221 struct iwl_mvm_vif *mvmvif,
4222 bool disable)
4223 {
4224 struct ieee80211_sta *sta;
4225 struct iwl_mvm_sta *mvm_sta;
4226 int i;
4227
4228 if (mvm->mld_api_is_used) {
4229 if (!iwl_mvm_has_no_host_disable_tx(mvm))
4230 iwl_mvm_mld_modify_all_sta_disable_tx(mvm, mvmvif,
4231 disable);
4232 return;
4233 }
4234
4235 rcu_read_lock();
4236
4237 /* Block/unblock all the stations of the given mvmvif */
4238 for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) {
4239 sta = rcu_dereference(mvm->fw_id_to_mac_id[i]);
4240 if (IS_ERR_OR_NULL(sta))
4241 continue;
4242
4243 mvm_sta = iwl_mvm_sta_from_mac80211(sta);
4244 if (mvm_sta->mac_id_n_color !=
4245 FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color))
4246 continue;
4247
4248 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable);
4249 }
4250
4251 rcu_read_unlock();
4252
4253 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
4254 return;
4255
4256 /* Need to block/unblock also multicast station */
4257 if (mvmvif->deflink.mcast_sta.sta_id != IWL_INVALID_STA)
4258 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif,
4259 &mvmvif->deflink.mcast_sta,
4260 disable);
4261
4262 /*
4263 * Only unblock the broadcast station (FW blocks it for immediate
4264 * quiet, not the driver)
4265 */
4266 if (!disable && mvmvif->deflink.bcast_sta.sta_id != IWL_INVALID_STA)
4267 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif,
4268 &mvmvif->deflink.bcast_sta,
4269 disable);
4270 }
4271
iwl_mvm_csa_client_absent(struct iwl_mvm * mvm,struct ieee80211_vif * vif)4272 void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
4273 {
4274 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4275 struct iwl_mvm_sta *mvmsta;
4276
4277 rcu_read_lock();
4278
4279 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->deflink.ap_sta_id);
4280
4281 if (mvmsta)
4282 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true);
4283
4284 rcu_read_unlock();
4285 }
4286
iwl_mvm_tid_queued(struct iwl_mvm * mvm,struct iwl_mvm_tid_data * tid_data)4287 u16 iwl_mvm_tid_queued(struct iwl_mvm *mvm, struct iwl_mvm_tid_data *tid_data)
4288 {
4289 u16 sn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
4290
4291 /*
4292 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need
4293 * to align the wrap around of ssn so we compare relevant values.
4294 */
4295 if (mvm->trans->mac_cfg->gen2)
4296 sn &= 0xff;
4297
4298 return ieee80211_sn_sub(sn, tid_data->next_reclaimed);
4299 }
4300
iwl_mvm_cancel_channel_switch(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u32 id)4301 void iwl_mvm_cancel_channel_switch(struct iwl_mvm *mvm,
4302 struct ieee80211_vif *vif,
4303 u32 id)
4304 {
4305 struct iwl_cancel_channel_switch_cmd cancel_channel_switch_cmd = {
4306 .id = cpu_to_le32(id),
4307 };
4308 int ret;
4309
4310 ret = iwl_mvm_send_cmd_pdu(mvm,
4311 WIDE_ID(MAC_CONF_GROUP, CANCEL_CHANNEL_SWITCH_CMD),
4312 CMD_ASYNC,
4313 sizeof(cancel_channel_switch_cmd),
4314 &cancel_channel_switch_cmd);
4315 if (ret)
4316 IWL_ERR(mvm, "Failed to cancel the channel switch\n");
4317 }
4318