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 #if defined(__FreeBSD__)
9 #include <linux/cache.h>
10 #endif
11
12 #include "mvm.h"
13 #include "sta.h"
14 #include "rs.h"
15
16 /*
17 * New version of ADD_STA_sta command added new fields at the end of the
18 * structure, so sending the size of the relevant API's structure is enough to
19 * support both API versions.
20 */
iwl_mvm_add_sta_cmd_size(struct iwl_mvm * mvm)21 static inline int iwl_mvm_add_sta_cmd_size(struct iwl_mvm *mvm)
22 {
23 if (iwl_mvm_has_new_rx_api(mvm) ||
24 fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
25 return sizeof(struct iwl_mvm_add_sta_cmd);
26 else
27 return sizeof(struct iwl_mvm_add_sta_cmd_v7);
28 }
29
iwl_mvm_find_free_sta_id(struct iwl_mvm * mvm,enum nl80211_iftype iftype)30 int iwl_mvm_find_free_sta_id(struct iwl_mvm *mvm, enum nl80211_iftype iftype)
31 {
32 int sta_id;
33 u32 reserved_ids = 0;
34
35 BUILD_BUG_ON(IWL_STATION_COUNT_MAX > 32);
36 WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status));
37
38 lockdep_assert_held(&mvm->mutex);
39
40 /* d0i3/d3 assumes the AP's sta_id (of sta vif) is 0. reserve it. */
41 if (iftype != NL80211_IFTYPE_STATION)
42 reserved_ids = BIT(0);
43
44 /* Don't take rcu_read_lock() since we are protected by mvm->mutex */
45 for (sta_id = 0; sta_id < mvm->fw->ucode_capa.num_stations; sta_id++) {
46 if (BIT(sta_id) & reserved_ids)
47 continue;
48
49 if (!rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
50 lockdep_is_held(&mvm->mutex)))
51 return sta_id;
52 }
53 return IWL_INVALID_STA;
54 }
55
56 /* 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)57 u32 iwl_mvm_get_sta_ampdu_dens(struct ieee80211_link_sta *link_sta,
58 struct ieee80211_bss_conf *link_conf,
59 u32 *_agg_size)
60 {
61 u32 agg_size = 0, mpdu_dens = 0;
62
63 if (WARN_ON(!link_sta))
64 return 0;
65
66 /* Note that we always use only legacy & highest supported PPDUs, so
67 * of Draft P802.11be D.30 Table 10-12a--Fields used for calculating
68 * the maximum A-MPDU size of various PPDU types in different bands,
69 * we only need to worry about the highest supported PPDU type here.
70 */
71
72 if (link_sta->ht_cap.ht_supported) {
73 agg_size = link_sta->ht_cap.ampdu_factor;
74 mpdu_dens = link_sta->ht_cap.ampdu_density;
75 }
76
77 if (link_conf->chanreq.oper.chan->band == NL80211_BAND_6GHZ) {
78 /* overwrite HT values on 6 GHz */
79 mpdu_dens = le16_get_bits(link_sta->he_6ghz_capa.capa,
80 IEEE80211_HE_6GHZ_CAP_MIN_MPDU_START);
81 agg_size = le16_get_bits(link_sta->he_6ghz_capa.capa,
82 IEEE80211_HE_6GHZ_CAP_MAX_AMPDU_LEN_EXP);
83 } else if (link_sta->vht_cap.vht_supported) {
84 /* if VHT supported overwrite HT value */
85 agg_size = u32_get_bits(link_sta->vht_cap.cap,
86 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK);
87 }
88
89 /* D6.0 10.12.2 A-MPDU length limit rules
90 * A STA indicates the maximum length of the A-MPDU preEOF padding
91 * that it can receive in an HE PPDU in the Maximum A-MPDU Length
92 * Exponent field in its HT Capabilities, VHT Capabilities,
93 * and HE 6 GHz Band Capabilities elements (if present) and the
94 * Maximum AMPDU Length Exponent Extension field in its HE
95 * Capabilities element
96 */
97 if (link_sta->he_cap.has_he)
98 agg_size +=
99 u8_get_bits(link_sta->he_cap.he_cap_elem.mac_cap_info[3],
100 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_MASK);
101
102 if (link_sta->eht_cap.has_eht)
103 agg_size += u8_get_bits(link_sta->eht_cap.eht_cap_elem.mac_cap_info[1],
104 IEEE80211_EHT_MAC_CAP1_MAX_AMPDU_LEN_MASK);
105
106 /* Limit to max A-MPDU supported by FW */
107 agg_size = min_t(u32, agg_size,
108 STA_FLG_MAX_AGG_SIZE_4M >> STA_FLG_MAX_AGG_SIZE_SHIFT);
109
110 *_agg_size = agg_size;
111 return mpdu_dens;
112 }
113
iwl_mvm_get_sta_uapsd_acs(struct ieee80211_sta * sta)114 u8 iwl_mvm_get_sta_uapsd_acs(struct ieee80211_sta *sta)
115 {
116 u8 uapsd_acs = 0;
117
118 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK)
119 uapsd_acs |= BIT(AC_BK);
120 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE)
121 uapsd_acs |= BIT(AC_BE);
122 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI)
123 uapsd_acs |= BIT(AC_VI);
124 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)
125 uapsd_acs |= BIT(AC_VO);
126
127 return uapsd_acs | uapsd_acs << 4;
128 }
129
130 /* 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)131 int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
132 bool update, unsigned int flags)
133 {
134 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
135 struct iwl_mvm_add_sta_cmd add_sta_cmd = {
136 .sta_id = mvm_sta->deflink.sta_id,
137 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color),
138 .add_modify = update ? 1 : 0,
139 .station_flags_msk = cpu_to_le32(STA_FLG_FAT_EN_MSK |
140 STA_FLG_MIMO_EN_MSK |
141 STA_FLG_RTS_MIMO_PROT),
142 .tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg),
143 };
144 int ret;
145 u32 status;
146 u32 agg_size = 0, mpdu_dens = 0;
147
148 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
149 add_sta_cmd.station_type = mvm_sta->sta_type;
150
151 if (!update || (flags & STA_MODIFY_QUEUES)) {
152 memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN);
153
154 if (!iwl_mvm_has_new_tx_api(mvm)) {
155 add_sta_cmd.tfd_queue_msk =
156 cpu_to_le32(mvm_sta->tfd_queue_msk);
157
158 if (flags & STA_MODIFY_QUEUES)
159 add_sta_cmd.modify_mask |= STA_MODIFY_QUEUES;
160 } else {
161 WARN_ON(flags & STA_MODIFY_QUEUES);
162 }
163 }
164
165 switch (sta->deflink.bandwidth) {
166 case IEEE80211_STA_RX_BW_320:
167 case IEEE80211_STA_RX_BW_160:
168 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ);
169 fallthrough;
170 case IEEE80211_STA_RX_BW_80:
171 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ);
172 fallthrough;
173 case IEEE80211_STA_RX_BW_40:
174 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ);
175 fallthrough;
176 case IEEE80211_STA_RX_BW_20:
177 if (sta->deflink.ht_cap.ht_supported)
178 add_sta_cmd.station_flags |=
179 cpu_to_le32(STA_FLG_FAT_EN_20MHZ);
180 break;
181 }
182
183 switch (sta->deflink.rx_nss) {
184 case 1:
185 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO);
186 break;
187 case 2:
188 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2);
189 break;
190 case 3 ... 8:
191 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3);
192 break;
193 }
194
195 switch (sta->deflink.smps_mode) {
196 case IEEE80211_SMPS_AUTOMATIC:
197 case IEEE80211_SMPS_NUM_MODES:
198 WARN_ON(1);
199 break;
200 case IEEE80211_SMPS_STATIC:
201 /* override NSS */
202 add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK);
203 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO);
204 break;
205 case IEEE80211_SMPS_DYNAMIC:
206 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT);
207 break;
208 case IEEE80211_SMPS_OFF:
209 /* nothing */
210 break;
211 }
212
213 if (sta->deflink.ht_cap.ht_supported ||
214 mvm_sta->vif->bss_conf.chanreq.oper.chan->band == NL80211_BAND_6GHZ)
215 add_sta_cmd.station_flags_msk |=
216 cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK |
217 STA_FLG_AGG_MPDU_DENS_MSK);
218
219 mpdu_dens = iwl_mvm_get_sta_ampdu_dens(&sta->deflink,
220 &mvm_sta->vif->bss_conf,
221 &agg_size);
222 add_sta_cmd.station_flags |=
223 cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT);
224 add_sta_cmd.station_flags |=
225 cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT);
226
227 if (mvm_sta->sta_state >= IEEE80211_STA_ASSOC)
228 add_sta_cmd.assoc_id = cpu_to_le16(sta->aid);
229
230 if (sta->wme) {
231 add_sta_cmd.modify_mask |= STA_MODIFY_UAPSD_ACS;
232 add_sta_cmd.uapsd_acs = iwl_mvm_get_sta_uapsd_acs(sta);
233 add_sta_cmd.sp_length = sta->max_sp ? sta->max_sp * 2 : 128;
234 }
235
236 status = ADD_STA_SUCCESS;
237 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
238 iwl_mvm_add_sta_cmd_size(mvm),
239 &add_sta_cmd, &status);
240 if (ret)
241 return ret;
242
243 switch (status & IWL_ADD_STA_STATUS_MASK) {
244 case ADD_STA_SUCCESS:
245 IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n");
246 break;
247 default:
248 ret = -EIO;
249 IWL_ERR(mvm, "ADD_STA failed\n");
250 break;
251 }
252
253 return ret;
254 }
255
iwl_mvm_rx_agg_session_expired(struct timer_list * t)256 static void iwl_mvm_rx_agg_session_expired(struct timer_list *t)
257 {
258 struct iwl_mvm_baid_data *data =
259 timer_container_of(data, t, session_timer);
260 struct iwl_mvm_baid_data __rcu **rcu_ptr = data->rcu_ptr;
261 struct iwl_mvm_baid_data *ba_data;
262 struct ieee80211_sta *sta;
263 struct iwl_mvm_sta *mvm_sta;
264 unsigned long timeout;
265 unsigned int sta_id;
266
267 rcu_read_lock();
268
269 ba_data = rcu_dereference(*rcu_ptr);
270
271 if (WARN_ON(!ba_data))
272 goto unlock;
273
274 if (!ba_data->timeout)
275 goto unlock;
276
277 timeout = ba_data->last_rx + TU_TO_JIFFIES(ba_data->timeout * 2);
278 if (time_is_after_jiffies(timeout)) {
279 mod_timer(&ba_data->session_timer, timeout);
280 goto unlock;
281 }
282
283 /* Timer expired */
284 sta_id = ffs(ba_data->sta_mask) - 1; /* don't care which one */
285 sta = rcu_dereference(ba_data->mvm->fw_id_to_mac_id[sta_id]);
286
287 /*
288 * sta should be valid unless the following happens:
289 * The firmware asserts which triggers a reconfig flow, but
290 * the reconfig fails before we set the pointer to sta into
291 * the fw_id_to_mac_id pointer table. Mac80211 can't stop
292 * A-MDPU and hence the timer continues to run. Then, the
293 * timer expires and sta is NULL.
294 */
295 if (IS_ERR_OR_NULL(sta))
296 goto unlock;
297
298 mvm_sta = iwl_mvm_sta_from_mac80211(sta);
299 ieee80211_rx_ba_timer_expired(mvm_sta->vif,
300 sta->addr, ba_data->tid);
301 unlock:
302 rcu_read_unlock();
303 }
304
305 /* 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)306 static int iwl_mvm_invalidate_sta_queue(struct iwl_mvm *mvm, int queue,
307 unsigned long disable_agg_tids,
308 bool remove_queue)
309 {
310 struct iwl_mvm_add_sta_cmd cmd = {};
311 struct ieee80211_sta *sta;
312 struct iwl_mvm_sta *mvmsta;
313 u32 status;
314 u8 sta_id;
315
316 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
317 return -EINVAL;
318
319 sta_id = mvm->queue_info[queue].ra_sta_id;
320
321 rcu_read_lock();
322
323 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
324
325 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) {
326 rcu_read_unlock();
327 return -EINVAL;
328 }
329
330 mvmsta = iwl_mvm_sta_from_mac80211(sta);
331
332 mvmsta->tid_disable_agg |= disable_agg_tids;
333
334 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color);
335 cmd.sta_id = mvmsta->deflink.sta_id;
336 cmd.add_modify = STA_MODE_MODIFY;
337 cmd.modify_mask = STA_MODIFY_QUEUES;
338 if (disable_agg_tids)
339 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX;
340 if (remove_queue)
341 cmd.modify_mask |= STA_MODIFY_QUEUE_REMOVAL;
342 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk);
343 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg);
344
345 rcu_read_unlock();
346
347 /* Notify FW of queue removal from the STA queues */
348 status = ADD_STA_SUCCESS;
349 return iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
350 iwl_mvm_add_sta_cmd_size(mvm),
351 &cmd, &status);
352 }
353
iwl_mvm_disable_txq(struct iwl_mvm * mvm,struct ieee80211_sta * sta,int sta_id,u16 * queueptr,u8 tid)354 static int iwl_mvm_disable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
355 int sta_id, u16 *queueptr, u8 tid)
356 {
357 int queue = *queueptr;
358 struct iwl_scd_txq_cfg_cmd cmd = {
359 .scd_queue = queue,
360 .action = SCD_CFG_DISABLE_QUEUE,
361 };
362 int ret;
363
364 lockdep_assert_held(&mvm->mutex);
365
366 if (iwl_mvm_has_new_tx_api(mvm)) {
367 if (mvm->sta_remove_requires_queue_remove) {
368 u32 cmd_id = WIDE_ID(DATA_PATH_GROUP,
369 SCD_QUEUE_CONFIG_CMD);
370 struct iwl_scd_queue_cfg_cmd remove_cmd = {
371 .operation = cpu_to_le32(IWL_SCD_QUEUE_REMOVE),
372 .u.remove.sta_mask = cpu_to_le32(BIT(sta_id)),
373 };
374
375 if (tid == IWL_MAX_TID_COUNT)
376 tid = IWL_MGMT_TID;
377
378 remove_cmd.u.remove.tid = cpu_to_le32(tid);
379
380 ret = iwl_mvm_send_cmd_pdu(mvm, cmd_id, 0,
381 sizeof(remove_cmd),
382 &remove_cmd);
383 } else {
384 ret = 0;
385 }
386
387 iwl_trans_txq_free(mvm->trans, queue);
388 *queueptr = IWL_MVM_INVALID_QUEUE;
389
390 return ret;
391 }
392
393 if (WARN_ON(mvm->queue_info[queue].tid_bitmap == 0))
394 return 0;
395
396 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid);
397
398 cmd.action = mvm->queue_info[queue].tid_bitmap ?
399 SCD_CFG_ENABLE_QUEUE : SCD_CFG_DISABLE_QUEUE;
400 if (cmd.action == SCD_CFG_DISABLE_QUEUE)
401 mvm->queue_info[queue].status = IWL_MVM_QUEUE_FREE;
402
403 IWL_DEBUG_TX_QUEUES(mvm,
404 "Disabling TXQ #%d tids=0x%x\n",
405 queue,
406 mvm->queue_info[queue].tid_bitmap);
407
408 /* If the queue is still enabled - nothing left to do in this func */
409 if (cmd.action == SCD_CFG_ENABLE_QUEUE)
410 return 0;
411
412 cmd.sta_id = mvm->queue_info[queue].ra_sta_id;
413 cmd.tid = mvm->queue_info[queue].txq_tid;
414
415 /* Make sure queue info is correct even though we overwrite it */
416 WARN(mvm->queue_info[queue].tid_bitmap,
417 "TXQ #%d info out-of-sync - tids=0x%x\n",
418 queue, mvm->queue_info[queue].tid_bitmap);
419
420 /* If we are here - the queue is freed and we can zero out these vals */
421 mvm->queue_info[queue].tid_bitmap = 0;
422
423 if (sta) {
424 struct iwl_mvm_txq *mvmtxq =
425 iwl_mvm_txq_from_tid(sta, tid);
426
427 spin_lock_bh(&mvm->add_stream_lock);
428 list_del_init(&mvmtxq->list);
429 clear_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state);
430 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE;
431 spin_unlock_bh(&mvm->add_stream_lock);
432 }
433
434 /* Regardless if this is a reserved TXQ for a STA - mark it as false */
435 mvm->queue_info[queue].reserved = false;
436
437 iwl_trans_txq_disable(mvm->trans, queue, false);
438 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0,
439 sizeof(struct iwl_scd_txq_cfg_cmd), &cmd);
440
441 if (ret)
442 IWL_ERR(mvm, "Failed to disable queue %d (ret=%d)\n",
443 queue, ret);
444 return ret;
445 }
446
iwl_mvm_get_queue_agg_tids(struct iwl_mvm * mvm,int queue)447 static int iwl_mvm_get_queue_agg_tids(struct iwl_mvm *mvm, int queue)
448 {
449 struct ieee80211_sta *sta;
450 struct iwl_mvm_sta *mvmsta;
451 unsigned long tid_bitmap;
452 unsigned long agg_tids = 0;
453 u8 sta_id;
454 int tid;
455
456 lockdep_assert_held(&mvm->mutex);
457
458 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
459 return -EINVAL;
460
461 sta_id = mvm->queue_info[queue].ra_sta_id;
462 tid_bitmap = mvm->queue_info[queue].tid_bitmap;
463
464 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
465 lockdep_is_held(&mvm->mutex));
466
467 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
468 return -EINVAL;
469
470 mvmsta = iwl_mvm_sta_from_mac80211(sta);
471
472 spin_lock_bh(&mvmsta->lock);
473 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
474 if (mvmsta->tid_data[tid].state == IWL_AGG_ON)
475 agg_tids |= BIT(tid);
476 }
477 spin_unlock_bh(&mvmsta->lock);
478
479 return agg_tids;
480 }
481
482 /*
483 * Remove a queue from a station's resources.
484 * Note that this only marks as free. It DOESN'T delete a BA agreement, and
485 * doesn't disable the queue
486 */
iwl_mvm_remove_sta_queue_marking(struct iwl_mvm * mvm,int queue)487 static int iwl_mvm_remove_sta_queue_marking(struct iwl_mvm *mvm, int queue)
488 {
489 struct ieee80211_sta *sta;
490 struct iwl_mvm_sta *mvmsta;
491 unsigned long tid_bitmap;
492 unsigned long disable_agg_tids = 0;
493 u8 sta_id;
494 int tid;
495
496 lockdep_assert_held(&mvm->mutex);
497
498 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
499 return -EINVAL;
500
501 sta_id = mvm->queue_info[queue].ra_sta_id;
502 tid_bitmap = mvm->queue_info[queue].tid_bitmap;
503
504 rcu_read_lock();
505
506 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
507
508 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) {
509 rcu_read_unlock();
510 return 0;
511 }
512
513 mvmsta = iwl_mvm_sta_from_mac80211(sta);
514
515 spin_lock_bh(&mvmsta->lock);
516 /* Unmap MAC queues and TIDs from this queue */
517 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
518 struct iwl_mvm_txq *mvmtxq =
519 iwl_mvm_txq_from_tid(sta, tid);
520
521 if (mvmsta->tid_data[tid].state == IWL_AGG_ON)
522 disable_agg_tids |= BIT(tid);
523 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE;
524
525 spin_lock_bh(&mvm->add_stream_lock);
526 list_del_init(&mvmtxq->list);
527 clear_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state);
528 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE;
529 spin_unlock_bh(&mvm->add_stream_lock);
530 }
531
532 mvmsta->tfd_queue_msk &= ~BIT(queue); /* Don't use this queue anymore */
533 spin_unlock_bh(&mvmsta->lock);
534
535 rcu_read_unlock();
536
537 /*
538 * The TX path may have been using this TXQ_ID from the tid_data,
539 * so make sure it's no longer running so that we can safely reuse
540 * this TXQ later. We've set all the TIDs to IWL_MVM_INVALID_QUEUE
541 * above, but nothing guarantees we've stopped using them. Thus,
542 * without this, we could get to iwl_mvm_disable_txq() and remove
543 * the queue while still sending frames to it.
544 */
545 synchronize_net();
546
547 return disable_agg_tids;
548 }
549
iwl_mvm_free_inactive_queue(struct iwl_mvm * mvm,int queue,struct ieee80211_sta * old_sta,u8 new_sta_id)550 static int iwl_mvm_free_inactive_queue(struct iwl_mvm *mvm, int queue,
551 struct ieee80211_sta *old_sta,
552 u8 new_sta_id)
553 {
554 struct iwl_mvm_sta *mvmsta;
555 u8 sta_id, tid;
556 unsigned long disable_agg_tids = 0;
557 bool same_sta;
558 u16 queue_tmp = queue;
559 int ret;
560
561 lockdep_assert_held(&mvm->mutex);
562
563 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
564 return -EINVAL;
565
566 sta_id = mvm->queue_info[queue].ra_sta_id;
567 tid = mvm->queue_info[queue].txq_tid;
568
569 same_sta = sta_id == new_sta_id;
570
571 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id);
572 if (WARN_ON(!mvmsta))
573 return -EINVAL;
574
575 disable_agg_tids = iwl_mvm_remove_sta_queue_marking(mvm, queue);
576 /* Disable the queue */
577 if (disable_agg_tids)
578 iwl_mvm_invalidate_sta_queue(mvm, queue,
579 disable_agg_tids, false);
580
581 ret = iwl_mvm_disable_txq(mvm, old_sta, sta_id, &queue_tmp, tid);
582 if (ret) {
583 IWL_ERR(mvm,
584 "Failed to free inactive queue %d (ret=%d)\n",
585 queue, ret);
586
587 return ret;
588 }
589
590 /* If TXQ is allocated to another STA, update removal in FW */
591 if (!same_sta)
592 iwl_mvm_invalidate_sta_queue(mvm, queue, 0, true);
593
594 return 0;
595 }
596
iwl_mvm_get_shared_queue(struct iwl_mvm * mvm,unsigned long tfd_queue_mask,u8 ac)597 static int iwl_mvm_get_shared_queue(struct iwl_mvm *mvm,
598 unsigned long tfd_queue_mask, u8 ac)
599 {
600 int queue = 0;
601 u8 ac_to_queue[IEEE80211_NUM_ACS];
602 int i;
603
604 /*
605 * This protects us against grabbing a queue that's being reconfigured
606 * by the inactivity checker.
607 */
608 lockdep_assert_held(&mvm->mutex);
609
610 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
611 return -EINVAL;
612
613 memset(&ac_to_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(ac_to_queue));
614
615 /* See what ACs the existing queues for this STA have */
616 for_each_set_bit(i, &tfd_queue_mask, IWL_MVM_DQA_MAX_DATA_QUEUE) {
617 /* Only DATA queues can be shared */
618 if (i < IWL_MVM_DQA_MIN_DATA_QUEUE &&
619 i != IWL_MVM_DQA_BSS_CLIENT_QUEUE)
620 continue;
621
622 ac_to_queue[mvm->queue_info[i].mac80211_ac] = i;
623 }
624
625 /*
626 * The queue to share is chosen only from DATA queues as follows (in
627 * descending priority):
628 * 1. An AC_BE queue
629 * 2. Same AC queue
630 * 3. Highest AC queue that is lower than new AC
631 * 4. Any existing AC (there always is at least 1 DATA queue)
632 */
633
634 /* Priority 1: An AC_BE queue */
635 if (ac_to_queue[IEEE80211_AC_BE] != IEEE80211_INVAL_HW_QUEUE)
636 queue = ac_to_queue[IEEE80211_AC_BE];
637 /* Priority 2: Same AC queue */
638 else if (ac_to_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
639 queue = ac_to_queue[ac];
640 /* Priority 3a: If new AC is VO and VI exists - use VI */
641 else if (ac == IEEE80211_AC_VO &&
642 ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE)
643 queue = ac_to_queue[IEEE80211_AC_VI];
644 /* Priority 3b: No BE so only AC less than the new one is BK */
645 else if (ac_to_queue[IEEE80211_AC_BK] != IEEE80211_INVAL_HW_QUEUE)
646 queue = ac_to_queue[IEEE80211_AC_BK];
647 /* Priority 4a: No BE nor BK - use VI if exists */
648 else if (ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE)
649 queue = ac_to_queue[IEEE80211_AC_VI];
650 /* Priority 4b: No BE, BK nor VI - use VO if exists */
651 else if (ac_to_queue[IEEE80211_AC_VO] != IEEE80211_INVAL_HW_QUEUE)
652 queue = ac_to_queue[IEEE80211_AC_VO];
653
654 /* Make sure queue found (or not) is legal */
655 if (!iwl_mvm_is_dqa_data_queue(mvm, queue) &&
656 !iwl_mvm_is_dqa_mgmt_queue(mvm, queue) &&
657 (queue != IWL_MVM_DQA_BSS_CLIENT_QUEUE)) {
658 IWL_ERR(mvm, "No DATA queues available to share\n");
659 return -ENOSPC;
660 }
661
662 return queue;
663 }
664
665 /* 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)666 static int iwl_mvm_reconfig_scd(struct iwl_mvm *mvm, int queue, int fifo,
667 int sta_id, int tid, int frame_limit, u16 ssn)
668 {
669 struct iwl_scd_txq_cfg_cmd cmd = {
670 .scd_queue = queue,
671 .action = SCD_CFG_ENABLE_QUEUE,
672 .window = frame_limit,
673 .sta_id = sta_id,
674 .ssn = cpu_to_le16(ssn),
675 .tx_fifo = fifo,
676 .aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE ||
677 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE),
678 .tid = tid,
679 };
680 int ret;
681
682 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
683 return -EINVAL;
684
685 if (WARN(mvm->queue_info[queue].tid_bitmap == 0,
686 "Trying to reconfig unallocated queue %d\n", queue))
687 return -ENXIO;
688
689 IWL_DEBUG_TX_QUEUES(mvm, "Reconfig SCD for TXQ #%d\n", queue);
690
691 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd);
692 WARN_ONCE(ret, "Failed to re-configure queue %d on FIFO %d, ret=%d\n",
693 queue, fifo, ret);
694
695 return ret;
696 }
697
698 /*
699 * If a given queue has a higher AC than the TID stream that is being compared
700 * to, the queue needs to be redirected to the lower AC. This function does that
701 * in such a case, otherwise - if no redirection required - it does nothing,
702 * unless the %force param is true.
703 */
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)704 static int iwl_mvm_redirect_queue(struct iwl_mvm *mvm, int queue, int tid,
705 int ac, int ssn, unsigned int wdg_timeout,
706 bool force, struct iwl_mvm_txq *txq)
707 {
708 struct iwl_scd_txq_cfg_cmd cmd = {
709 .scd_queue = queue,
710 .action = SCD_CFG_DISABLE_QUEUE,
711 };
712 bool shared_queue;
713 int ret;
714
715 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
716 return -EINVAL;
717
718 /*
719 * If the AC is lower than current one - FIFO needs to be redirected to
720 * the lowest one of the streams in the queue. Check if this is needed
721 * here.
722 * Notice that the enum ieee80211_ac_numbers is "flipped", so BK is with
723 * value 3 and VO with value 0, so to check if ac X is lower than ac Y
724 * we need to check if the numerical value of X is LARGER than of Y.
725 */
726 if (ac <= mvm->queue_info[queue].mac80211_ac && !force) {
727 IWL_DEBUG_TX_QUEUES(mvm,
728 "No redirection needed on TXQ #%d\n",
729 queue);
730 return 0;
731 }
732
733 cmd.sta_id = mvm->queue_info[queue].ra_sta_id;
734 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[mvm->queue_info[queue].mac80211_ac];
735 cmd.tid = mvm->queue_info[queue].txq_tid;
736 shared_queue = hweight16(mvm->queue_info[queue].tid_bitmap) > 1;
737
738 IWL_DEBUG_TX_QUEUES(mvm, "Redirecting TXQ #%d to FIFO #%d\n",
739 queue, iwl_mvm_ac_to_tx_fifo[ac]);
740
741 /* Stop the queue and wait for it to empty */
742 set_bit(IWL_MVM_TXQ_STATE_STOP_REDIRECT, &txq->state);
743
744 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(queue));
745 if (ret) {
746 IWL_ERR(mvm, "Error draining queue %d before reconfig\n",
747 queue);
748 ret = -EIO;
749 goto out;
750 }
751
752 /* Before redirecting the queue we need to de-activate it */
753 iwl_trans_txq_disable(mvm->trans, queue, false);
754 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd);
755 if (ret)
756 IWL_ERR(mvm, "Failed SCD disable TXQ %d (ret=%d)\n", queue,
757 ret);
758
759 /* Make sure the SCD wrptr is correctly set before reconfiguring */
760 iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL, wdg_timeout);
761
762 /* Update the TID "owner" of the queue */
763 mvm->queue_info[queue].txq_tid = tid;
764
765 /* TODO: Work-around SCD bug when moving back by multiples of 0x40 */
766
767 /* Redirect to lower AC */
768 iwl_mvm_reconfig_scd(mvm, queue, iwl_mvm_ac_to_tx_fifo[ac],
769 cmd.sta_id, tid, IWL_FRAME_LIMIT, ssn);
770
771 /* Update AC marking of the queue */
772 mvm->queue_info[queue].mac80211_ac = ac;
773
774 /*
775 * Mark queue as shared in transport if shared
776 * Note this has to be done after queue enablement because enablement
777 * can also set this value, and there is no indication there to shared
778 * queues
779 */
780 if (shared_queue)
781 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true);
782
783 out:
784 /* Continue using the queue */
785 clear_bit(IWL_MVM_TXQ_STATE_STOP_REDIRECT, &txq->state);
786
787 return ret;
788 }
789
iwl_mvm_find_free_queue(struct iwl_mvm * mvm,u8 sta_id,u8 minq,u8 maxq)790 static int iwl_mvm_find_free_queue(struct iwl_mvm *mvm, u8 sta_id,
791 u8 minq, u8 maxq)
792 {
793 int i;
794
795 lockdep_assert_held(&mvm->mutex);
796
797 if (WARN(maxq >= mvm->trans->mac_cfg->base->num_of_queues,
798 "max queue %d >= num_of_queues (%d)", maxq,
799 mvm->trans->mac_cfg->base->num_of_queues))
800 maxq = mvm->trans->mac_cfg->base->num_of_queues - 1;
801
802 /* This should not be hit with new TX path */
803 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
804 return -ENOSPC;
805
806 /* Start by looking for a free queue */
807 for (i = minq; i <= maxq; i++)
808 if (mvm->queue_info[i].tid_bitmap == 0 &&
809 mvm->queue_info[i].status == IWL_MVM_QUEUE_FREE)
810 return i;
811
812 return -ENOSPC;
813 }
814
iwl_mvm_get_queue_size(struct ieee80211_sta * sta)815 static int iwl_mvm_get_queue_size(struct ieee80211_sta *sta)
816 {
817 int max_size = IWL_DEFAULT_QUEUE_SIZE;
818 unsigned int link_id;
819
820 /* this queue isn't used for traffic (cab_queue) */
821 if (!sta)
822 return IWL_MGMT_QUEUE_SIZE;
823
824 rcu_read_lock();
825
826 for (link_id = 0; link_id < ARRAY_SIZE(sta->link); link_id++) {
827 struct ieee80211_link_sta *link =
828 rcu_dereference(sta->link[link_id]);
829
830 if (!link)
831 continue;
832
833 /* support for 512 ba size */
834 if (link->eht_cap.has_eht &&
835 max_size < IWL_DEFAULT_QUEUE_SIZE_EHT)
836 max_size = IWL_DEFAULT_QUEUE_SIZE_EHT;
837
838 /* support for 256 ba size */
839 if (link->he_cap.has_he &&
840 max_size < IWL_DEFAULT_QUEUE_SIZE_HE)
841 max_size = IWL_DEFAULT_QUEUE_SIZE_HE;
842 }
843
844 rcu_read_unlock();
845 return max_size;
846 }
847
iwl_mvm_tvqm_enable_txq(struct iwl_mvm * mvm,struct ieee80211_sta * sta,u8 sta_id,u8 tid,unsigned int timeout)848 int iwl_mvm_tvqm_enable_txq(struct iwl_mvm *mvm,
849 struct ieee80211_sta *sta,
850 u8 sta_id, u8 tid, unsigned int timeout)
851 {
852 int queue, size;
853 u32 sta_mask = 0;
854
855 if (tid == IWL_MAX_TID_COUNT) {
856 tid = IWL_MGMT_TID;
857 size = max_t(u32, IWL_MGMT_QUEUE_SIZE,
858 mvm->trans->mac_cfg->base->min_txq_size);
859 } else {
860 size = iwl_mvm_get_queue_size(sta);
861 }
862
863 if (sta) {
864 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
865 struct ieee80211_link_sta *link_sta;
866 unsigned int link_id;
867
868 rcu_read_lock();
869 for_each_sta_active_link(mvmsta->vif, sta, link_sta, link_id) {
870 struct iwl_mvm_link_sta *link =
871 rcu_dereference_protected(mvmsta->link[link_id],
872 lockdep_is_held(&mvm->mutex));
873
874 if (!link)
875 continue;
876
877 sta_mask |= BIT(link->sta_id);
878 }
879 rcu_read_unlock();
880 } else {
881 sta_mask |= BIT(sta_id);
882 }
883
884 if (!sta_mask)
885 return -EINVAL;
886
887 queue = iwl_trans_txq_alloc(mvm->trans, 0, sta_mask,
888 tid, size, timeout);
889
890 if (queue >= 0)
891 IWL_DEBUG_TX_QUEUES(mvm,
892 "Enabling TXQ #%d for sta mask 0x%x tid %d\n",
893 queue, sta_mask, tid);
894
895 return queue;
896 }
897
iwl_mvm_sta_alloc_queue_tvqm(struct iwl_mvm * mvm,struct ieee80211_sta * sta,u8 ac,int tid)898 static int iwl_mvm_sta_alloc_queue_tvqm(struct iwl_mvm *mvm,
899 struct ieee80211_sta *sta, u8 ac,
900 int tid)
901 {
902 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
903 struct iwl_mvm_txq *mvmtxq =
904 iwl_mvm_txq_from_tid(sta, tid);
905 unsigned int wdg_timeout =
906 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif);
907 int queue = -1;
908
909 lockdep_assert_held(&mvm->mutex);
910
911 IWL_DEBUG_TX_QUEUES(mvm,
912 "Allocating queue for sta %d on tid %d\n",
913 mvmsta->deflink.sta_id, tid);
914 queue = iwl_mvm_tvqm_enable_txq(mvm, sta, mvmsta->deflink.sta_id,
915 tid, wdg_timeout);
916 if (queue < 0)
917 return queue;
918
919 mvmtxq->txq_id = queue;
920 mvm->tvqm_info[queue].txq_tid = tid;
921 mvm->tvqm_info[queue].sta_id = mvmsta->deflink.sta_id;
922
923 IWL_DEBUG_TX_QUEUES(mvm, "Allocated queue is %d\n", queue);
924
925 spin_lock_bh(&mvmsta->lock);
926 mvmsta->tid_data[tid].txq_id = queue;
927 spin_unlock_bh(&mvmsta->lock);
928
929 return 0;
930 }
931
iwl_mvm_update_txq_mapping(struct iwl_mvm * mvm,struct ieee80211_sta * sta,int queue,u8 sta_id,u8 tid)932 static bool iwl_mvm_update_txq_mapping(struct iwl_mvm *mvm,
933 struct ieee80211_sta *sta,
934 int queue, u8 sta_id, u8 tid)
935 {
936 bool enable_queue = true;
937
938 /* Make sure this TID isn't already enabled */
939 if (mvm->queue_info[queue].tid_bitmap & BIT(tid)) {
940 IWL_ERR(mvm, "Trying to enable TXQ %d with existing TID %d\n",
941 queue, tid);
942 return false;
943 }
944
945 /* Update mappings and refcounts */
946 if (mvm->queue_info[queue].tid_bitmap)
947 enable_queue = false;
948
949 mvm->queue_info[queue].tid_bitmap |= BIT(tid);
950 mvm->queue_info[queue].ra_sta_id = sta_id;
951
952 if (enable_queue) {
953 if (tid != IWL_MAX_TID_COUNT)
954 mvm->queue_info[queue].mac80211_ac =
955 tid_to_mac80211_ac[tid];
956 else
957 mvm->queue_info[queue].mac80211_ac = IEEE80211_AC_VO;
958
959 mvm->queue_info[queue].txq_tid = tid;
960 }
961
962 if (sta) {
963 struct iwl_mvm_txq *mvmtxq =
964 iwl_mvm_txq_from_tid(sta, tid);
965
966 mvmtxq->txq_id = queue;
967 }
968
969 IWL_DEBUG_TX_QUEUES(mvm,
970 "Enabling TXQ #%d tids=0x%x\n",
971 queue, mvm->queue_info[queue].tid_bitmap);
972
973 return enable_queue;
974 }
975
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)976 static bool iwl_mvm_enable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
977 int queue, u16 ssn,
978 const struct iwl_trans_txq_scd_cfg *cfg,
979 unsigned int wdg_timeout)
980 {
981 struct iwl_scd_txq_cfg_cmd cmd = {
982 .scd_queue = queue,
983 .action = SCD_CFG_ENABLE_QUEUE,
984 .window = cfg->frame_limit,
985 .sta_id = cfg->sta_id,
986 .ssn = cpu_to_le16(ssn),
987 .tx_fifo = cfg->fifo,
988 .aggregate = cfg->aggregate,
989 .tid = cfg->tid,
990 };
991 bool inc_ssn;
992
993 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
994 return false;
995
996 /* Send the enabling command if we need to */
997 if (!iwl_mvm_update_txq_mapping(mvm, sta, queue, cfg->sta_id, cfg->tid))
998 return false;
999
1000 inc_ssn = iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn,
1001 NULL, wdg_timeout);
1002 if (inc_ssn)
1003 le16_add_cpu(&cmd.ssn, 1);
1004
1005 WARN(iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd),
1006 "Failed to configure queue %d on FIFO %d\n", queue, cfg->fifo);
1007
1008 return inc_ssn;
1009 }
1010
iwl_mvm_change_queue_tid(struct iwl_mvm * mvm,int queue)1011 static void iwl_mvm_change_queue_tid(struct iwl_mvm *mvm, int queue)
1012 {
1013 struct iwl_scd_txq_cfg_cmd cmd = {
1014 .scd_queue = queue,
1015 .action = SCD_CFG_UPDATE_QUEUE_TID,
1016 };
1017 int tid;
1018 unsigned long tid_bitmap;
1019 int ret;
1020
1021 lockdep_assert_held(&mvm->mutex);
1022
1023 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
1024 return;
1025
1026 tid_bitmap = mvm->queue_info[queue].tid_bitmap;
1027
1028 if (WARN(!tid_bitmap, "TXQ %d has no tids assigned to it\n", queue))
1029 return;
1030
1031 /* Find any TID for queue */
1032 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1);
1033 cmd.tid = tid;
1034 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]];
1035
1036 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd);
1037 if (ret) {
1038 IWL_ERR(mvm, "Failed to update owner of TXQ %d (ret=%d)\n",
1039 queue, ret);
1040 return;
1041 }
1042
1043 mvm->queue_info[queue].txq_tid = tid;
1044 IWL_DEBUG_TX_QUEUES(mvm, "Changed TXQ %d ownership to tid %d\n",
1045 queue, tid);
1046 }
1047
iwl_mvm_unshare_queue(struct iwl_mvm * mvm,int queue)1048 static void iwl_mvm_unshare_queue(struct iwl_mvm *mvm, int queue)
1049 {
1050 struct ieee80211_sta *sta;
1051 struct iwl_mvm_sta *mvmsta;
1052 u8 sta_id;
1053 int tid = -1;
1054 unsigned long tid_bitmap;
1055 unsigned int wdg_timeout;
1056 int ssn;
1057 int ret = true;
1058
1059 /* queue sharing is disabled on new TX path */
1060 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
1061 return;
1062
1063 lockdep_assert_held(&mvm->mutex);
1064
1065 sta_id = mvm->queue_info[queue].ra_sta_id;
1066 tid_bitmap = mvm->queue_info[queue].tid_bitmap;
1067
1068 /* Find TID for queue, and make sure it is the only one on the queue */
1069 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1);
1070 if (tid_bitmap != BIT(tid)) {
1071 IWL_ERR(mvm, "Failed to unshare q %d, active tids=0x%lx\n",
1072 queue, tid_bitmap);
1073 return;
1074 }
1075
1076 IWL_DEBUG_TX_QUEUES(mvm, "Unsharing TXQ %d, keeping tid %d\n", queue,
1077 tid);
1078
1079 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1080 lockdep_is_held(&mvm->mutex));
1081
1082 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
1083 return;
1084
1085 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1086 wdg_timeout = iwl_mvm_get_wd_timeout(mvm, mvmsta->vif);
1087
1088 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number);
1089
1090 ret = iwl_mvm_redirect_queue(mvm, queue, tid,
1091 tid_to_mac80211_ac[tid], ssn,
1092 wdg_timeout, true,
1093 iwl_mvm_txq_from_tid(sta, tid));
1094 if (ret) {
1095 IWL_ERR(mvm, "Failed to redirect TXQ %d\n", queue);
1096 return;
1097 }
1098
1099 /* If aggs should be turned back on - do it */
1100 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) {
1101 struct iwl_mvm_add_sta_cmd cmd = {0};
1102
1103 mvmsta->tid_disable_agg &= ~BIT(tid);
1104
1105 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color);
1106 cmd.sta_id = mvmsta->deflink.sta_id;
1107 cmd.add_modify = STA_MODE_MODIFY;
1108 cmd.modify_mask = STA_MODIFY_TID_DISABLE_TX;
1109 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk);
1110 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg);
1111
1112 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
1113 iwl_mvm_add_sta_cmd_size(mvm), &cmd);
1114 if (!ret) {
1115 IWL_DEBUG_TX_QUEUES(mvm,
1116 "TXQ #%d is now aggregated again\n",
1117 queue);
1118
1119 /* Mark queue intenally as aggregating again */
1120 iwl_trans_txq_set_shared_mode(mvm->trans, queue, false);
1121 }
1122 }
1123
1124 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY;
1125 }
1126
1127 /*
1128 * Remove inactive TIDs of a given queue.
1129 * If all queue TIDs are inactive - mark the queue as inactive
1130 * If only some the queue TIDs are inactive - unmap them from the queue
1131 *
1132 * Returns %true if all TIDs were removed and the queue could be reused.
1133 */
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)1134 static bool iwl_mvm_remove_inactive_tids(struct iwl_mvm *mvm,
1135 struct iwl_mvm_sta *mvmsta, int queue,
1136 unsigned long tid_bitmap,
1137 unsigned long *unshare_queues,
1138 unsigned long *changetid_queues)
1139 {
1140 unsigned int tid;
1141
1142 lockdep_assert_held(&mvmsta->lock);
1143 lockdep_assert_held(&mvm->mutex);
1144
1145 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
1146 return false;
1147
1148 /* Go over all non-active TIDs, incl. IWL_MAX_TID_COUNT (for mgmt) */
1149 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
1150 /* If some TFDs are still queued - don't mark TID as inactive */
1151 if (iwl_mvm_tid_queued(mvm, &mvmsta->tid_data[tid]))
1152 tid_bitmap &= ~BIT(tid);
1153
1154 /* Don't mark as inactive any TID that has an active BA */
1155 if (mvmsta->tid_data[tid].state != IWL_AGG_OFF)
1156 tid_bitmap &= ~BIT(tid);
1157 }
1158
1159 /* If all TIDs in the queue are inactive - return it can be reused */
1160 if (tid_bitmap == mvm->queue_info[queue].tid_bitmap) {
1161 IWL_DEBUG_TX_QUEUES(mvm, "Queue %d is inactive\n", queue);
1162 return true;
1163 }
1164
1165 /*
1166 * If we are here, this is a shared queue and not all TIDs timed-out.
1167 * Remove the ones that did.
1168 */
1169 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
1170 u16 q_tid_bitmap;
1171
1172 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE;
1173 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid);
1174
1175 q_tid_bitmap = mvm->queue_info[queue].tid_bitmap;
1176
1177 /*
1178 * We need to take into account a situation in which a TXQ was
1179 * allocated to TID x, and then turned shared by adding TIDs y
1180 * and z. If TID x becomes inactive and is removed from the TXQ,
1181 * ownership must be given to one of the remaining TIDs.
1182 * This is mainly because if TID x continues - a new queue can't
1183 * be allocated for it as long as it is an owner of another TXQ.
1184 *
1185 * Mark this queue in the right bitmap, we'll send the command
1186 * to the firmware later.
1187 */
1188 if (!(q_tid_bitmap & BIT(mvm->queue_info[queue].txq_tid)))
1189 set_bit(queue, changetid_queues);
1190
1191 IWL_DEBUG_TX_QUEUES(mvm,
1192 "Removing inactive TID %d from shared Q:%d\n",
1193 tid, queue);
1194 }
1195
1196 IWL_DEBUG_TX_QUEUES(mvm,
1197 "TXQ #%d left with tid bitmap 0x%x\n", queue,
1198 mvm->queue_info[queue].tid_bitmap);
1199
1200 /*
1201 * There may be different TIDs with the same mac queues, so make
1202 * sure all TIDs have existing corresponding mac queues enabled
1203 */
1204 tid_bitmap = mvm->queue_info[queue].tid_bitmap;
1205
1206 /* If the queue is marked as shared - "unshare" it */
1207 if (hweight16(mvm->queue_info[queue].tid_bitmap) == 1 &&
1208 mvm->queue_info[queue].status == IWL_MVM_QUEUE_SHARED) {
1209 IWL_DEBUG_TX_QUEUES(mvm, "Marking Q:%d for reconfig\n",
1210 queue);
1211 set_bit(queue, unshare_queues);
1212 }
1213
1214 return false;
1215 }
1216
1217 /*
1218 * Check for inactivity - this includes checking if any queue
1219 * can be unshared and finding one (and only one) that can be
1220 * reused.
1221 * This function is also invoked as a sort of clean-up task,
1222 * in which case @alloc_for_sta is IWL_INVALID_STA.
1223 *
1224 * Returns the queue number, or -ENOSPC.
1225 */
iwl_mvm_inactivity_check(struct iwl_mvm * mvm,u8 alloc_for_sta)1226 static int iwl_mvm_inactivity_check(struct iwl_mvm *mvm, u8 alloc_for_sta)
1227 {
1228 unsigned long now = jiffies;
1229 unsigned long unshare_queues = 0;
1230 unsigned long changetid_queues = 0;
1231 int i, ret, free_queue = -ENOSPC;
1232 struct ieee80211_sta *queue_owner = NULL;
1233
1234 lockdep_assert_held(&mvm->mutex);
1235
1236 if (iwl_mvm_has_new_tx_api(mvm))
1237 return -ENOSPC;
1238
1239 rcu_read_lock();
1240
1241 /* we skip the CMD queue below by starting at 1 */
1242 BUILD_BUG_ON(IWL_MVM_DQA_CMD_QUEUE != 0);
1243
1244 for (i = 1; i < IWL_MAX_HW_QUEUES; i++) {
1245 struct ieee80211_sta *sta;
1246 struct iwl_mvm_sta *mvmsta;
1247 u8 sta_id;
1248 int tid;
1249 unsigned long inactive_tid_bitmap = 0;
1250 unsigned long queue_tid_bitmap;
1251
1252 queue_tid_bitmap = mvm->queue_info[i].tid_bitmap;
1253 if (!queue_tid_bitmap)
1254 continue;
1255
1256 /* If TXQ isn't in active use anyway - nothing to do here... */
1257 if (mvm->queue_info[i].status != IWL_MVM_QUEUE_READY &&
1258 mvm->queue_info[i].status != IWL_MVM_QUEUE_SHARED)
1259 continue;
1260
1261 /* Check to see if there are inactive TIDs on this queue */
1262 for_each_set_bit(tid, &queue_tid_bitmap,
1263 IWL_MAX_TID_COUNT + 1) {
1264 if (time_after(mvm->queue_info[i].last_frame_time[tid] +
1265 IWL_MVM_DQA_QUEUE_TIMEOUT, now))
1266 continue;
1267
1268 inactive_tid_bitmap |= BIT(tid);
1269 }
1270
1271 /* If all TIDs are active - finish check on this queue */
1272 if (!inactive_tid_bitmap)
1273 continue;
1274
1275 /*
1276 * If we are here - the queue hadn't been served recently and is
1277 * in use
1278 */
1279
1280 sta_id = mvm->queue_info[i].ra_sta_id;
1281 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
1282
1283 /*
1284 * If the STA doesn't exist anymore, it isn't an error. It could
1285 * be that it was removed since getting the queues, and in this
1286 * case it should've inactivated its queues anyway.
1287 */
1288 if (IS_ERR_OR_NULL(sta))
1289 continue;
1290
1291 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1292
1293 spin_lock_bh(&mvmsta->lock);
1294 ret = iwl_mvm_remove_inactive_tids(mvm, mvmsta, i,
1295 inactive_tid_bitmap,
1296 &unshare_queues,
1297 &changetid_queues);
1298 if (ret && free_queue < 0) {
1299 queue_owner = sta;
1300 free_queue = i;
1301 }
1302 /* only unlock sta lock - we still need the queue info lock */
1303 spin_unlock_bh(&mvmsta->lock);
1304 }
1305
1306
1307 /* Reconfigure queues requiring reconfiguation */
1308 for_each_set_bit(i, &unshare_queues, IWL_MAX_HW_QUEUES)
1309 iwl_mvm_unshare_queue(mvm, i);
1310 for_each_set_bit(i, &changetid_queues, IWL_MAX_HW_QUEUES)
1311 iwl_mvm_change_queue_tid(mvm, i);
1312
1313 rcu_read_unlock();
1314
1315 if (free_queue >= 0 && alloc_for_sta != IWL_INVALID_STA) {
1316 ret = iwl_mvm_free_inactive_queue(mvm, free_queue, queue_owner,
1317 alloc_for_sta);
1318 if (ret)
1319 return ret;
1320 }
1321
1322 return free_queue;
1323 }
1324
iwl_mvm_sta_alloc_queue(struct iwl_mvm * mvm,struct ieee80211_sta * sta,u8 ac,int tid)1325 static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm,
1326 struct ieee80211_sta *sta, u8 ac, int tid)
1327 {
1328 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1329 struct iwl_trans_txq_scd_cfg cfg = {
1330 .fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac),
1331 .sta_id = mvmsta->deflink.sta_id,
1332 .tid = tid,
1333 .frame_limit = IWL_FRAME_LIMIT,
1334 };
1335 unsigned int wdg_timeout =
1336 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif);
1337 int queue = -1;
1338 u16 queue_tmp;
1339 unsigned long disable_agg_tids = 0;
1340 enum iwl_mvm_agg_state queue_state;
1341 bool shared_queue = false, inc_ssn;
1342 int ssn;
1343 unsigned long tfd_queue_mask;
1344 int ret;
1345
1346 lockdep_assert_held(&mvm->mutex);
1347
1348 if (iwl_mvm_has_new_tx_api(mvm))
1349 return iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid);
1350
1351 spin_lock_bh(&mvmsta->lock);
1352 tfd_queue_mask = mvmsta->tfd_queue_msk;
1353 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number);
1354 spin_unlock_bh(&mvmsta->lock);
1355
1356 if (tid == IWL_MAX_TID_COUNT) {
1357 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id,
1358 IWL_MVM_DQA_MIN_MGMT_QUEUE,
1359 IWL_MVM_DQA_MAX_MGMT_QUEUE);
1360 if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE)
1361 IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n",
1362 queue);
1363
1364 /* If no such queue is found, we'll use a DATA queue instead */
1365 }
1366
1367 if ((queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) &&
1368 (mvm->queue_info[mvmsta->reserved_queue].status ==
1369 IWL_MVM_QUEUE_RESERVED)) {
1370 queue = mvmsta->reserved_queue;
1371 mvm->queue_info[queue].reserved = true;
1372 IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue);
1373 }
1374
1375 if (queue < 0)
1376 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id,
1377 IWL_MVM_DQA_MIN_DATA_QUEUE,
1378 IWL_MVM_DQA_MAX_DATA_QUEUE);
1379 if (queue < 0) {
1380 /* try harder - perhaps kill an inactive queue */
1381 queue = iwl_mvm_inactivity_check(mvm, mvmsta->deflink.sta_id);
1382 }
1383
1384 /* No free queue - we'll have to share */
1385 if (queue <= 0) {
1386 queue = iwl_mvm_get_shared_queue(mvm, tfd_queue_mask, ac);
1387 if (queue > 0) {
1388 shared_queue = true;
1389 mvm->queue_info[queue].status = IWL_MVM_QUEUE_SHARED;
1390 }
1391 }
1392
1393 /*
1394 * Mark TXQ as ready, even though it hasn't been fully configured yet,
1395 * to make sure no one else takes it.
1396 * This will allow avoiding re-acquiring the lock at the end of the
1397 * configuration. On error we'll mark it back as free.
1398 */
1399 if (queue > 0 && !shared_queue)
1400 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY;
1401
1402 /* This shouldn't happen - out of queues */
1403 if (WARN_ON(queue <= 0)) {
1404 IWL_ERR(mvm, "No available queues for tid %d on sta_id %d\n",
1405 tid, cfg.sta_id);
1406 return queue;
1407 }
1408
1409 /*
1410 * Actual en/disablement of aggregations is through the ADD_STA HCMD,
1411 * but for configuring the SCD to send A-MPDUs we need to mark the queue
1412 * as aggregatable.
1413 * Mark all DATA queues as allowing to be aggregated at some point
1414 */
1415 cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE ||
1416 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE);
1417
1418 IWL_DEBUG_TX_QUEUES(mvm,
1419 "Allocating %squeue #%d to sta %d on tid %d\n",
1420 shared_queue ? "shared " : "", queue,
1421 mvmsta->deflink.sta_id, tid);
1422
1423 if (shared_queue) {
1424 /* Disable any open aggs on this queue */
1425 disable_agg_tids = iwl_mvm_get_queue_agg_tids(mvm, queue);
1426
1427 if (disable_agg_tids) {
1428 IWL_DEBUG_TX_QUEUES(mvm, "Disabling aggs on queue %d\n",
1429 queue);
1430 iwl_mvm_invalidate_sta_queue(mvm, queue,
1431 disable_agg_tids, false);
1432 }
1433 }
1434
1435 inc_ssn = iwl_mvm_enable_txq(mvm, sta, queue, ssn, &cfg, wdg_timeout);
1436
1437 /*
1438 * Mark queue as shared in transport if shared
1439 * Note this has to be done after queue enablement because enablement
1440 * can also set this value, and there is no indication there to shared
1441 * queues
1442 */
1443 if (shared_queue)
1444 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true);
1445
1446 spin_lock_bh(&mvmsta->lock);
1447 /*
1448 * This looks racy, but it is not. We have only one packet for
1449 * this ra/tid in our Tx path since we stop the Qdisc when we
1450 * need to allocate a new TFD queue.
1451 */
1452 if (inc_ssn) {
1453 mvmsta->tid_data[tid].seq_number += 0x10;
1454 ssn = (ssn + 1) & IEEE80211_SCTL_SEQ;
1455 }
1456 mvmsta->tid_data[tid].txq_id = queue;
1457 mvmsta->tfd_queue_msk |= BIT(queue);
1458 queue_state = mvmsta->tid_data[tid].state;
1459
1460 if (mvmsta->reserved_queue == queue)
1461 mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE;
1462 spin_unlock_bh(&mvmsta->lock);
1463
1464 if (!shared_queue) {
1465 ret = iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES);
1466 if (ret)
1467 goto out_err;
1468
1469 /* If we need to re-enable aggregations... */
1470 if (queue_state == IWL_AGG_ON) {
1471 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);
1472 if (ret)
1473 goto out_err;
1474 }
1475 } else {
1476 /* Redirect queue, if needed */
1477 ret = iwl_mvm_redirect_queue(mvm, queue, tid, ac, ssn,
1478 wdg_timeout, false,
1479 iwl_mvm_txq_from_tid(sta, tid));
1480 if (ret)
1481 goto out_err;
1482 }
1483
1484 return 0;
1485
1486 out_err:
1487 queue_tmp = queue;
1488 iwl_mvm_disable_txq(mvm, sta, mvmsta->deflink.sta_id, &queue_tmp, tid);
1489
1490 return ret;
1491 }
1492
iwl_mvm_sta_ensure_queue(struct iwl_mvm * mvm,struct ieee80211_txq * txq)1493 int iwl_mvm_sta_ensure_queue(struct iwl_mvm *mvm,
1494 struct ieee80211_txq *txq)
1495 {
1496 struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq);
1497 int ret = -EINVAL;
1498
1499 lockdep_assert_held(&mvm->mutex);
1500
1501 if (likely(test_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state)) ||
1502 !txq->sta) {
1503 return 0;
1504 }
1505
1506 if (!iwl_mvm_sta_alloc_queue(mvm, txq->sta, txq->ac, txq->tid)) {
1507 set_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state);
1508 ret = 0;
1509 }
1510
1511 local_bh_disable();
1512 spin_lock(&mvm->add_stream_lock);
1513 if (!list_empty(&mvmtxq->list))
1514 list_del_init(&mvmtxq->list);
1515 spin_unlock(&mvm->add_stream_lock);
1516 local_bh_enable();
1517
1518 return ret;
1519 }
1520
iwl_mvm_add_new_dqa_stream_wk(struct work_struct * wk)1521 void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk)
1522 {
1523 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm,
1524 add_stream_wk);
1525
1526 guard(mvm)(mvm);
1527
1528 /* will reschedule to run after restart */
1529 if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status) ||
1530 test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1531 return;
1532
1533 iwl_mvm_inactivity_check(mvm, IWL_INVALID_STA);
1534
1535 while (!list_empty(&mvm->add_stream_txqs)) {
1536 struct iwl_mvm_txq *mvmtxq;
1537 struct ieee80211_txq *txq;
1538 u8 tid;
1539
1540 mvmtxq = list_first_entry(&mvm->add_stream_txqs,
1541 struct iwl_mvm_txq, list);
1542
1543 txq = container_of((void *)mvmtxq, struct ieee80211_txq,
1544 drv_priv);
1545 tid = txq->tid;
1546 if (tid == IEEE80211_NUM_TIDS)
1547 tid = IWL_MAX_TID_COUNT;
1548
1549 /*
1550 * We can't really do much here, but if this fails we can't
1551 * transmit anyway - so just don't transmit the frame etc.
1552 * and let them back up ... we've tried our best to allocate
1553 * a queue in the function itself.
1554 */
1555 if (iwl_mvm_sta_alloc_queue(mvm, txq->sta, txq->ac, tid)) {
1556 spin_lock_bh(&mvm->add_stream_lock);
1557 list_del_init(&mvmtxq->list);
1558 spin_unlock_bh(&mvm->add_stream_lock);
1559 continue;
1560 }
1561
1562 /* now we're ready, any remaining races/concurrency will be
1563 * handled in iwl_mvm_mac_itxq_xmit()
1564 */
1565 set_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state);
1566
1567 local_bh_disable();
1568 spin_lock(&mvm->add_stream_lock);
1569 list_del_init(&mvmtxq->list);
1570 spin_unlock(&mvm->add_stream_lock);
1571
1572 iwl_mvm_mac_itxq_xmit(mvm->hw, txq);
1573 local_bh_enable();
1574 }
1575 }
1576
iwl_mvm_reserve_sta_stream(struct iwl_mvm * mvm,struct ieee80211_sta * sta,enum nl80211_iftype vif_type)1577 static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm,
1578 struct ieee80211_sta *sta,
1579 enum nl80211_iftype vif_type)
1580 {
1581 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1582 int queue;
1583
1584 /* queue reserving is disabled on new TX path */
1585 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
1586 return 0;
1587
1588 /* run the general cleanup/unsharing of queues */
1589 iwl_mvm_inactivity_check(mvm, IWL_INVALID_STA);
1590
1591 /* Make sure we have free resources for this STA */
1592 if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls &&
1593 !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].tid_bitmap &&
1594 (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status ==
1595 IWL_MVM_QUEUE_FREE))
1596 queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE;
1597 else
1598 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id,
1599 IWL_MVM_DQA_MIN_DATA_QUEUE,
1600 IWL_MVM_DQA_MAX_DATA_QUEUE);
1601 if (queue < 0) {
1602 /* try again - this time kick out a queue if needed */
1603 queue = iwl_mvm_inactivity_check(mvm, mvmsta->deflink.sta_id);
1604 if (queue < 0) {
1605 IWL_ERR(mvm, "No available queues for new station\n");
1606 return -ENOSPC;
1607 }
1608 }
1609 mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED;
1610
1611 mvmsta->reserved_queue = queue;
1612
1613 IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n",
1614 queue, mvmsta->deflink.sta_id);
1615
1616 return 0;
1617 }
1618
1619 /*
1620 * In DQA mode, after a HW restart the queues should be allocated as before, in
1621 * order to avoid race conditions when there are shared queues. This function
1622 * does the re-mapping and queue allocation.
1623 *
1624 * Note that re-enabling aggregations isn't done in this function.
1625 */
iwl_mvm_realloc_queues_after_restart(struct iwl_mvm * mvm,struct ieee80211_sta * sta)1626 void iwl_mvm_realloc_queues_after_restart(struct iwl_mvm *mvm,
1627 struct ieee80211_sta *sta)
1628 {
1629 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1630 unsigned int wdg =
1631 iwl_mvm_get_wd_timeout(mvm, mvm_sta->vif);
1632 int i;
1633 struct iwl_trans_txq_scd_cfg cfg = {
1634 .sta_id = mvm_sta->deflink.sta_id,
1635 .frame_limit = IWL_FRAME_LIMIT,
1636 };
1637
1638 /* Make sure reserved queue is still marked as such (if allocated) */
1639 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE)
1640 mvm->queue_info[mvm_sta->reserved_queue].status =
1641 IWL_MVM_QUEUE_RESERVED;
1642
1643 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
1644 struct iwl_mvm_tid_data *tid_data = &mvm_sta->tid_data[i];
1645 int txq_id = tid_data->txq_id;
1646 int ac;
1647
1648 if (txq_id == IWL_MVM_INVALID_QUEUE)
1649 continue;
1650
1651 ac = tid_to_mac80211_ac[i];
1652
1653 if (iwl_mvm_has_new_tx_api(mvm)) {
1654 IWL_DEBUG_TX_QUEUES(mvm,
1655 "Re-mapping sta %d tid %d\n",
1656 mvm_sta->deflink.sta_id, i);
1657 txq_id = iwl_mvm_tvqm_enable_txq(mvm, sta,
1658 mvm_sta->deflink.sta_id,
1659 i, wdg);
1660 /*
1661 * on failures, just set it to IWL_MVM_INVALID_QUEUE
1662 * to try again later, we have no other good way of
1663 * failing here
1664 */
1665 if (txq_id < 0)
1666 txq_id = IWL_MVM_INVALID_QUEUE;
1667 tid_data->txq_id = txq_id;
1668
1669 /*
1670 * Since we don't set the seq number after reset, and HW
1671 * sets it now, FW reset will cause the seq num to start
1672 * at 0 again, so driver will need to update it
1673 * internally as well, so it keeps in sync with real val
1674 */
1675 tid_data->seq_number = 0;
1676 } else {
1677 u16 seq = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
1678
1679 cfg.tid = i;
1680 cfg.fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac);
1681 cfg.aggregate = (txq_id >= IWL_MVM_DQA_MIN_DATA_QUEUE ||
1682 txq_id ==
1683 IWL_MVM_DQA_BSS_CLIENT_QUEUE);
1684
1685 IWL_DEBUG_TX_QUEUES(mvm,
1686 "Re-mapping sta %d tid %d to queue %d\n",
1687 mvm_sta->deflink.sta_id, i,
1688 txq_id);
1689
1690 iwl_mvm_enable_txq(mvm, sta, txq_id, seq, &cfg, wdg);
1691 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_READY;
1692 }
1693 }
1694 }
1695
iwl_mvm_add_int_sta_common(struct iwl_mvm * mvm,struct iwl_mvm_int_sta * sta,const u8 * addr,u16 mac_id,u16 color)1696 static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm,
1697 struct iwl_mvm_int_sta *sta,
1698 const u8 *addr,
1699 u16 mac_id, u16 color)
1700 {
1701 struct iwl_mvm_add_sta_cmd cmd;
1702 int ret;
1703 u32 status = ADD_STA_SUCCESS;
1704
1705 lockdep_assert_held(&mvm->mutex);
1706
1707 memset(&cmd, 0, sizeof(cmd));
1708 cmd.sta_id = sta->sta_id;
1709
1710 if (iwl_mvm_has_new_station_api(mvm->fw) &&
1711 sta->type == IWL_STA_AUX_ACTIVITY)
1712 cmd.mac_id_n_color = cpu_to_le32(mac_id);
1713 else
1714 cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id,
1715 color));
1716
1717 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
1718 cmd.station_type = sta->type;
1719
1720 if (!iwl_mvm_has_new_tx_api(mvm))
1721 cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk);
1722 cmd.tid_disable_tx = cpu_to_le16(0xffff);
1723
1724 if (addr)
1725 memcpy(cmd.addr, addr, ETH_ALEN);
1726
1727 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
1728 iwl_mvm_add_sta_cmd_size(mvm),
1729 &cmd, &status);
1730 if (ret)
1731 return ret;
1732
1733 switch (status & IWL_ADD_STA_STATUS_MASK) {
1734 case ADD_STA_SUCCESS:
1735 IWL_DEBUG_INFO(mvm, "Internal station added.\n");
1736 return 0;
1737 default:
1738 ret = -EIO;
1739 IWL_ERR(mvm, "Add internal station failed, status=0x%x\n",
1740 status);
1741 break;
1742 }
1743 return ret;
1744 }
1745
1746 /* 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)1747 int iwl_mvm_sta_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1748 struct ieee80211_sta *sta, int sta_id, u8 sta_type)
1749 {
1750 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1751 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1752 struct iwl_mvm_rxq_dup_data *dup_data;
1753 int i, ret = 0;
1754
1755 lockdep_assert_held(&mvm->mutex);
1756
1757 mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id,
1758 mvmvif->color);
1759 mvm_sta->vif = vif;
1760
1761 /* for MLD sta_id(s) should be allocated for each link before calling
1762 * this function
1763 */
1764 if (!mvm->mld_api_is_used) {
1765 if (WARN_ON(sta_id == IWL_INVALID_STA))
1766 return -EINVAL;
1767
1768 mvm_sta->deflink.sta_id = sta_id;
1769 rcu_assign_pointer(mvm_sta->link[0], &mvm_sta->deflink);
1770
1771 if (!mvm->trans->mac_cfg->gen2)
1772 mvm_sta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize =
1773 LINK_QUAL_AGG_FRAME_LIMIT_DEF;
1774 else
1775 mvm_sta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize =
1776 LINK_QUAL_AGG_FRAME_LIMIT_GEN2_DEF;
1777 }
1778
1779 mvm_sta->tt_tx_protection = false;
1780 mvm_sta->sta_type = sta_type;
1781
1782 mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */
1783
1784 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
1785 /*
1786 * Mark all queues for this STA as unallocated and defer TX
1787 * frames until the queue is allocated
1788 */
1789 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE;
1790 }
1791
1792 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) {
1793 struct iwl_mvm_txq *mvmtxq =
1794 iwl_mvm_txq_from_mac80211(sta->txq[i]);
1795
1796 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE;
1797 INIT_LIST_HEAD(&mvmtxq->list);
1798 atomic_set(&mvmtxq->tx_request, 0);
1799 }
1800
1801 if (iwl_mvm_has_new_rx_api(mvm)) {
1802 int q;
1803
1804 dup_data = kzalloc_objs(*dup_data, mvm->trans->info.num_rxqs);
1805 if (!dup_data)
1806 return -ENOMEM;
1807 /*
1808 * Initialize all the last_seq values to 0xffff which can never
1809 * compare equal to the frame's seq_ctrl in the check in
1810 * iwl_mvm_is_dup() since the lower 4 bits are the fragment
1811 * number and fragmented packets don't reach that function.
1812 *
1813 * This thus allows receiving a packet with seqno 0 and the
1814 * retry bit set as the very first packet on a new TID.
1815 */
1816 for (q = 0; q < mvm->trans->info.num_rxqs; q++)
1817 memset(dup_data[q].last_seq, 0xff,
1818 sizeof(dup_data[q].last_seq));
1819 mvm_sta->dup_data = dup_data;
1820 }
1821
1822 if (!iwl_mvm_has_new_tx_api(mvm)) {
1823 ret = iwl_mvm_reserve_sta_stream(mvm, sta,
1824 ieee80211_vif_type_p2p(vif));
1825 if (ret)
1826 return ret;
1827 }
1828
1829 /*
1830 * if rs is registered with mac80211, then "add station" will be handled
1831 * via the corresponding ops, otherwise need to notify rate scaling here
1832 */
1833 if (iwl_mvm_has_tlc_offload(mvm))
1834 iwl_mvm_rs_add_sta(mvm, mvm_sta);
1835 else
1836 spin_lock_init(&mvm_sta->deflink.lq_sta.rs_drv.pers.lock);
1837
1838 iwl_mvm_toggle_tx_ant(mvm, &mvm_sta->tx_ant);
1839
1840 return 0;
1841 }
1842
iwl_mvm_add_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * sta)1843 int iwl_mvm_add_sta(struct iwl_mvm *mvm,
1844 struct ieee80211_vif *vif,
1845 struct ieee80211_sta *sta)
1846 {
1847 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1848 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1849 int ret, sta_id;
1850 bool sta_update = false;
1851 unsigned int sta_flags = 0;
1852
1853 lockdep_assert_held(&mvm->mutex);
1854
1855 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1856 sta_id = iwl_mvm_find_free_sta_id(mvm,
1857 ieee80211_vif_type_p2p(vif));
1858 else
1859 sta_id = mvm_sta->deflink.sta_id;
1860
1861 if (sta_id == IWL_INVALID_STA)
1862 return -ENOSPC;
1863
1864 spin_lock_init(&mvm_sta->lock);
1865
1866 /* if this is a HW restart re-alloc existing queues */
1867 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1868 struct iwl_mvm_int_sta tmp_sta = {
1869 .sta_id = sta_id,
1870 .type = mvm_sta->sta_type,
1871 };
1872
1873 /* First add an empty station since allocating
1874 * a queue requires a valid station
1875 */
1876 ret = iwl_mvm_add_int_sta_common(mvm, &tmp_sta, sta->addr,
1877 mvmvif->id, mvmvif->color);
1878 if (ret)
1879 goto err;
1880
1881 iwl_mvm_realloc_queues_after_restart(mvm, sta);
1882 sta_update = true;
1883 sta_flags = iwl_mvm_has_new_tx_api(mvm) ? 0 : STA_MODIFY_QUEUES;
1884 goto update_fw;
1885 }
1886
1887 ret = iwl_mvm_sta_init(mvm, vif, sta, sta_id,
1888 sta->tdls ? IWL_STA_TDLS_LINK : IWL_STA_LINK);
1889 if (ret)
1890 goto err;
1891
1892 update_fw:
1893 ret = iwl_mvm_sta_send_to_fw(mvm, sta, sta_update, sta_flags);
1894 if (ret)
1895 goto err;
1896
1897 if (vif->type == NL80211_IFTYPE_STATION) {
1898 if (!sta->tdls) {
1899 WARN_ON(mvmvif->deflink.ap_sta_id != IWL_INVALID_STA);
1900 mvmvif->deflink.ap_sta_id = sta_id;
1901 } else {
1902 WARN_ON(mvmvif->deflink.ap_sta_id == IWL_INVALID_STA);
1903 }
1904 }
1905
1906 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta);
1907
1908 return 0;
1909
1910 err:
1911 return ret;
1912 }
1913
iwl_mvm_drain_sta(struct iwl_mvm * mvm,struct iwl_mvm_sta * mvmsta,bool drain)1914 int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta,
1915 bool drain)
1916 {
1917 struct iwl_mvm_add_sta_cmd cmd = {};
1918 int ret;
1919 u32 status;
1920
1921 lockdep_assert_held(&mvm->mutex);
1922
1923 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color);
1924 cmd.sta_id = mvmsta->deflink.sta_id;
1925 cmd.add_modify = STA_MODE_MODIFY;
1926 cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0;
1927 cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW);
1928
1929 status = ADD_STA_SUCCESS;
1930 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
1931 iwl_mvm_add_sta_cmd_size(mvm),
1932 &cmd, &status);
1933 if (ret)
1934 return ret;
1935
1936 switch (status & IWL_ADD_STA_STATUS_MASK) {
1937 case ADD_STA_SUCCESS:
1938 IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n",
1939 mvmsta->deflink.sta_id);
1940 break;
1941 default:
1942 ret = -EIO;
1943 #if defined(__linux__)
1944 IWL_ERR(mvm, "Couldn't drain frames for staid %d\n",
1945 mvmsta->deflink.sta_id);
1946 #elif defined(__FreeBSD__)
1947 IWL_ERR(mvm, "Couldn't drain frames for staid %d, status %#x\n",
1948 mvmsta->deflink.sta_id, status);
1949 #endif
1950 break;
1951 }
1952
1953 return ret;
1954 }
1955
1956 /*
1957 * Remove a station from the FW table. Before sending the command to remove
1958 * the station validate that the station is indeed known to the driver (sanity
1959 * only).
1960 */
iwl_mvm_rm_sta_common(struct iwl_mvm * mvm,u8 sta_id)1961 static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id)
1962 {
1963 struct ieee80211_sta *sta;
1964 struct iwl_mvm_rm_sta_cmd rm_sta_cmd = {
1965 .sta_id = sta_id,
1966 };
1967 int ret;
1968
1969 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1970 lockdep_is_held(&mvm->mutex));
1971
1972 /* Note: internal stations are marked as error values */
1973 if (!sta) {
1974 IWL_ERR(mvm, "Invalid station id\n");
1975 return -EINVAL;
1976 }
1977
1978 ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0,
1979 sizeof(rm_sta_cmd), &rm_sta_cmd);
1980 if (ret) {
1981 IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id);
1982 return ret;
1983 }
1984
1985 return 0;
1986 }
1987
iwl_mvm_disable_sta_queues(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * sta)1988 static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm,
1989 struct ieee80211_vif *vif,
1990 struct ieee80211_sta *sta)
1991 {
1992 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1993 int i;
1994
1995 lockdep_assert_held(&mvm->mutex);
1996
1997 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) {
1998 if (mvm_sta->tid_data[i].txq_id == IWL_MVM_INVALID_QUEUE)
1999 continue;
2000
2001 iwl_mvm_disable_txq(mvm, sta, mvm_sta->deflink.sta_id,
2002 &mvm_sta->tid_data[i].txq_id, i);
2003 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE;
2004 }
2005
2006 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) {
2007 struct iwl_mvm_txq *mvmtxq =
2008 iwl_mvm_txq_from_mac80211(sta->txq[i]);
2009
2010 spin_lock_bh(&mvm->add_stream_lock);
2011 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE;
2012 list_del_init(&mvmtxq->list);
2013 clear_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state);
2014 spin_unlock_bh(&mvm->add_stream_lock);
2015 }
2016 }
2017
iwl_mvm_wait_sta_queues_empty(struct iwl_mvm * mvm,struct iwl_mvm_sta * mvm_sta)2018 int iwl_mvm_wait_sta_queues_empty(struct iwl_mvm *mvm,
2019 struct iwl_mvm_sta *mvm_sta)
2020 {
2021 int i;
2022
2023 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) {
2024 u16 txq_id;
2025 int ret;
2026
2027 spin_lock_bh(&mvm_sta->lock);
2028 txq_id = mvm_sta->tid_data[i].txq_id;
2029 spin_unlock_bh(&mvm_sta->lock);
2030
2031 if (txq_id == IWL_MVM_INVALID_QUEUE)
2032 continue;
2033
2034 ret = iwl_trans_wait_txq_empty(mvm->trans, txq_id);
2035 if (ret)
2036 return ret;
2037 }
2038
2039 return 0;
2040 }
2041
2042 /* Execute the common part for both MLD and non-MLD modes.
2043 * Returns if we're done with removing the station, either
2044 * with error or success
2045 */
iwl_mvm_sta_del(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_link_sta * link_sta)2046 void iwl_mvm_sta_del(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2047 struct ieee80211_sta *sta,
2048 struct ieee80211_link_sta *link_sta)
2049 {
2050 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2051 struct iwl_mvm_vif_link_info *mvm_link =
2052 mvmvif->link[link_sta->link_id];
2053 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2054 struct iwl_mvm_link_sta *mvm_link_sta;
2055 u8 sta_id;
2056
2057 lockdep_assert_held(&mvm->mutex);
2058
2059 mvm_link_sta =
2060 rcu_dereference_protected(mvm_sta->link[link_sta->link_id],
2061 lockdep_is_held(&mvm->mutex));
2062 sta_id = mvm_link_sta->sta_id;
2063
2064 if (vif->type == NL80211_IFTYPE_STATION &&
2065 mvm_link->ap_sta_id == sta_id) {
2066 /* first remove remaining keys */
2067 iwl_mvm_sec_key_remove_ap(mvm, vif, mvm_link,
2068 link_sta->link_id);
2069
2070 mvm_link->ap_sta_id = IWL_INVALID_STA;
2071 }
2072
2073 /*
2074 * This shouldn't happen - the TDLS channel switch should be canceled
2075 * before the STA is removed.
2076 */
2077 if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == sta_id)) {
2078 mvm->tdls_cs.peer.sta_id = IWL_INVALID_STA;
2079 cancel_delayed_work(&mvm->tdls_cs.dwork);
2080 }
2081 }
2082
iwl_mvm_rm_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * sta)2083 int iwl_mvm_rm_sta(struct iwl_mvm *mvm,
2084 struct ieee80211_vif *vif,
2085 struct ieee80211_sta *sta)
2086 {
2087 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2088 int ret;
2089
2090 lockdep_assert_held(&mvm->mutex);
2091
2092 ret = iwl_mvm_drain_sta(mvm, mvm_sta, true);
2093 if (ret)
2094 return ret;
2095
2096 /* flush its queues here since we are freeing mvm_sta */
2097 ret = iwl_mvm_flush_sta(mvm, mvm_sta->deflink.sta_id,
2098 mvm_sta->tfd_queue_msk);
2099 if (ret)
2100 return ret;
2101 if (iwl_mvm_has_new_tx_api(mvm)) {
2102 ret = iwl_mvm_wait_sta_queues_empty(mvm, mvm_sta);
2103 } else {
2104 u32 q_mask = mvm_sta->tfd_queue_msk;
2105
2106 ret = iwl_trans_wait_tx_queues_empty(mvm->trans,
2107 q_mask);
2108 }
2109 if (ret)
2110 return ret;
2111
2112 ret = iwl_mvm_drain_sta(mvm, mvm_sta, false);
2113
2114 iwl_mvm_disable_sta_queues(mvm, vif, sta);
2115
2116 /* If there is a TXQ still marked as reserved - free it */
2117 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) {
2118 u8 reserved_txq = mvm_sta->reserved_queue;
2119 enum iwl_mvm_queue_status *status;
2120
2121 /*
2122 * If no traffic has gone through the reserved TXQ - it
2123 * is still marked as IWL_MVM_QUEUE_RESERVED, and
2124 * should be manually marked as free again
2125 */
2126 status = &mvm->queue_info[reserved_txq].status;
2127 if (WARN((*status != IWL_MVM_QUEUE_RESERVED) &&
2128 (*status != IWL_MVM_QUEUE_FREE),
2129 "sta_id %d reserved txq %d status %d",
2130 mvm_sta->deflink.sta_id, reserved_txq, *status))
2131 return -EINVAL;
2132
2133 *status = IWL_MVM_QUEUE_FREE;
2134 }
2135
2136 iwl_mvm_sta_del(mvm, vif, sta, &sta->deflink);
2137
2138 ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->deflink.sta_id);
2139 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->deflink.sta_id], NULL);
2140
2141 return ret;
2142 }
2143
iwl_mvm_rm_sta_id(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u8 sta_id)2144 int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm,
2145 struct ieee80211_vif *vif,
2146 u8 sta_id)
2147 {
2148 int ret = iwl_mvm_rm_sta_common(mvm, sta_id);
2149
2150 lockdep_assert_held(&mvm->mutex);
2151
2152 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL);
2153 return ret;
2154 }
2155
iwl_mvm_allocate_int_sta(struct iwl_mvm * mvm,struct iwl_mvm_int_sta * sta,u32 qmask,enum nl80211_iftype iftype,u8 type)2156 int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm,
2157 struct iwl_mvm_int_sta *sta,
2158 u32 qmask, enum nl80211_iftype iftype,
2159 u8 type)
2160 {
2161 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) ||
2162 sta->sta_id == IWL_INVALID_STA) {
2163 sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype);
2164 if (WARN_ON_ONCE(sta->sta_id == IWL_INVALID_STA))
2165 return -ENOSPC;
2166 }
2167
2168 sta->tfd_queue_msk = qmask;
2169 sta->type = type;
2170
2171 /* put a non-NULL value so iterating over the stations won't stop */
2172 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL));
2173 return 0;
2174 }
2175
iwl_mvm_dealloc_int_sta(struct iwl_mvm * mvm,struct iwl_mvm_int_sta * sta)2176 void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta)
2177 {
2178 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL);
2179 memset(sta, 0, sizeof(struct iwl_mvm_int_sta));
2180 sta->sta_id = IWL_INVALID_STA;
2181 }
2182
iwl_mvm_enable_aux_snif_queue(struct iwl_mvm * mvm,u16 queue,u8 sta_id,u8 fifo)2183 static void iwl_mvm_enable_aux_snif_queue(struct iwl_mvm *mvm, u16 queue,
2184 u8 sta_id, u8 fifo)
2185 {
2186 unsigned int wdg_timeout =
2187 mvm->trans->mac_cfg->base->wd_timeout;
2188 struct iwl_trans_txq_scd_cfg cfg = {
2189 .fifo = fifo,
2190 .sta_id = sta_id,
2191 .tid = IWL_MAX_TID_COUNT,
2192 .aggregate = false,
2193 .frame_limit = IWL_FRAME_LIMIT,
2194 };
2195
2196 WARN_ON(iwl_mvm_has_new_tx_api(mvm));
2197
2198 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout);
2199 }
2200
iwl_mvm_enable_aux_snif_queue_tvqm(struct iwl_mvm * mvm,u8 sta_id)2201 static int iwl_mvm_enable_aux_snif_queue_tvqm(struct iwl_mvm *mvm, u8 sta_id)
2202 {
2203 unsigned int wdg_timeout =
2204 mvm->trans->mac_cfg->base->wd_timeout;
2205
2206 WARN_ON(!iwl_mvm_has_new_tx_api(mvm));
2207
2208 return iwl_mvm_tvqm_enable_txq(mvm, NULL, sta_id, IWL_MAX_TID_COUNT,
2209 wdg_timeout);
2210 }
2211
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)2212 static int iwl_mvm_add_int_sta_with_queue(struct iwl_mvm *mvm, int macidx,
2213 int maccolor, u8 *addr,
2214 struct iwl_mvm_int_sta *sta,
2215 u16 *queue, int fifo)
2216 {
2217 int ret;
2218
2219 /* Map queue to fifo - needs to happen before adding station */
2220 if (!iwl_mvm_has_new_tx_api(mvm))
2221 iwl_mvm_enable_aux_snif_queue(mvm, *queue, sta->sta_id, fifo);
2222
2223 ret = iwl_mvm_add_int_sta_common(mvm, sta, addr, macidx, maccolor);
2224 if (ret) {
2225 if (!iwl_mvm_has_new_tx_api(mvm))
2226 iwl_mvm_disable_txq(mvm, NULL, sta->sta_id, queue,
2227 IWL_MAX_TID_COUNT);
2228 return ret;
2229 }
2230
2231 /*
2232 * For 22000 firmware and on we cannot add queue to a station unknown
2233 * to firmware so enable queue here - after the station was added
2234 */
2235 if (iwl_mvm_has_new_tx_api(mvm)) {
2236 int txq;
2237
2238 txq = iwl_mvm_enable_aux_snif_queue_tvqm(mvm, sta->sta_id);
2239 if (txq < 0) {
2240 iwl_mvm_rm_sta_common(mvm, sta->sta_id);
2241 return txq;
2242 }
2243
2244 *queue = txq;
2245 }
2246
2247 return 0;
2248 }
2249
iwl_mvm_add_aux_sta(struct iwl_mvm * mvm,u32 lmac_id)2250 int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm, u32 lmac_id)
2251 {
2252 int ret;
2253 u32 qmask = mvm->aux_queue == IWL_MVM_INVALID_QUEUE ? 0 :
2254 BIT(mvm->aux_queue);
2255
2256 lockdep_assert_held(&mvm->mutex);
2257
2258 /* Allocate aux station and assign to it the aux queue */
2259 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, qmask,
2260 NL80211_IFTYPE_UNSPECIFIED,
2261 IWL_STA_AUX_ACTIVITY);
2262 if (ret)
2263 return ret;
2264
2265 /*
2266 * In CDB NICs we need to specify which lmac to use for aux activity
2267 * using the mac_id argument place to send lmac_id to the function
2268 */
2269 ret = iwl_mvm_add_int_sta_with_queue(mvm, lmac_id, 0, NULL,
2270 &mvm->aux_sta, &mvm->aux_queue,
2271 IWL_MVM_TX_FIFO_MCAST);
2272 if (ret) {
2273 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
2274 return ret;
2275 }
2276
2277 return 0;
2278 }
2279
iwl_mvm_add_snif_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2280 int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2281 {
2282 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2283
2284 lockdep_assert_held(&mvm->mutex);
2285
2286 return iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, mvmvif->color,
2287 NULL, &mvm->snif_sta,
2288 &mvm->snif_queue,
2289 IWL_MVM_TX_FIFO_BE);
2290 }
2291
iwl_mvm_rm_snif_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2292 int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2293 {
2294 int ret;
2295
2296 lockdep_assert_held(&mvm->mutex);
2297
2298 if (WARN_ON_ONCE(mvm->snif_sta.sta_id == IWL_INVALID_STA))
2299 return -EINVAL;
2300
2301 iwl_mvm_disable_txq(mvm, NULL, mvm->snif_sta.sta_id,
2302 &mvm->snif_queue, IWL_MAX_TID_COUNT);
2303 ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id);
2304 if (ret)
2305 IWL_WARN(mvm, "Failed sending remove station\n");
2306
2307 return ret;
2308 }
2309
iwl_mvm_rm_aux_sta(struct iwl_mvm * mvm)2310 int iwl_mvm_rm_aux_sta(struct iwl_mvm *mvm)
2311 {
2312 int ret;
2313
2314 lockdep_assert_held(&mvm->mutex);
2315
2316 if (WARN_ON_ONCE(mvm->aux_sta.sta_id == IWL_INVALID_STA))
2317 return -EINVAL;
2318
2319 iwl_mvm_disable_txq(mvm, NULL, mvm->aux_sta.sta_id,
2320 &mvm->aux_queue, IWL_MAX_TID_COUNT);
2321 ret = iwl_mvm_rm_sta_common(mvm, mvm->aux_sta.sta_id);
2322 if (ret)
2323 IWL_WARN(mvm, "Failed sending remove station\n");
2324 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
2325
2326 return ret;
2327 }
2328
iwl_mvm_dealloc_snif_sta(struct iwl_mvm * mvm)2329 void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm)
2330 {
2331 iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta);
2332 }
2333
2334 /*
2335 * Send the add station command for the vif's broadcast station.
2336 * Assumes that the station was already allocated.
2337 *
2338 * @mvm: the mvm component
2339 * @vif: the interface to which the broadcast station is added
2340 * @bsta: the broadcast station to add.
2341 */
iwl_mvm_send_add_bcast_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2342 int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2343 {
2344 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2345 struct iwl_mvm_int_sta *bsta = &mvmvif->deflink.bcast_sta;
2346 static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
2347 const u8 *baddr = _baddr;
2348 int queue;
2349 int ret;
2350 unsigned int wdg_timeout =
2351 iwl_mvm_get_wd_timeout(mvm, vif);
2352 struct iwl_trans_txq_scd_cfg cfg = {
2353 .fifo = IWL_MVM_TX_FIFO_VO,
2354 .sta_id = mvmvif->deflink.bcast_sta.sta_id,
2355 .tid = IWL_MAX_TID_COUNT,
2356 .aggregate = false,
2357 .frame_limit = IWL_FRAME_LIMIT,
2358 };
2359
2360 lockdep_assert_held(&mvm->mutex);
2361
2362 if (!iwl_mvm_has_new_tx_api(mvm)) {
2363 if (vif->type == NL80211_IFTYPE_AP ||
2364 vif->type == NL80211_IFTYPE_ADHOC) {
2365 queue = mvm->probe_queue;
2366 } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2367 queue = mvm->p2p_dev_queue;
2368 } else {
2369 WARN(1, "Missing required TXQ for adding bcast STA\n");
2370 return -EINVAL;
2371 }
2372
2373 bsta->tfd_queue_msk |= BIT(queue);
2374
2375 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout);
2376 }
2377
2378 if (vif->type == NL80211_IFTYPE_ADHOC)
2379 baddr = vif->bss_conf.bssid;
2380
2381 if (WARN_ON_ONCE(bsta->sta_id == IWL_INVALID_STA))
2382 return -ENOSPC;
2383
2384 ret = iwl_mvm_add_int_sta_common(mvm, bsta, baddr,
2385 mvmvif->id, mvmvif->color);
2386 if (ret)
2387 return ret;
2388
2389 /*
2390 * For 22000 firmware and on we cannot add queue to a station unknown
2391 * to firmware so enable queue here - after the station was added
2392 */
2393 if (iwl_mvm_has_new_tx_api(mvm)) {
2394 queue = iwl_mvm_tvqm_enable_txq(mvm, NULL, bsta->sta_id,
2395 IWL_MAX_TID_COUNT,
2396 wdg_timeout);
2397 if (queue < 0) {
2398 iwl_mvm_rm_sta_common(mvm, bsta->sta_id);
2399 return queue;
2400 }
2401
2402 if (vif->type == NL80211_IFTYPE_AP ||
2403 vif->type == NL80211_IFTYPE_ADHOC) {
2404 /* for queue management */
2405 mvm->probe_queue = queue;
2406 /* for use in TX */
2407 mvmvif->deflink.mgmt_queue = queue;
2408 } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2409 mvm->p2p_dev_queue = queue;
2410 }
2411 } else if (vif->type == NL80211_IFTYPE_AP ||
2412 vif->type == NL80211_IFTYPE_ADHOC) {
2413 /* set it for use in TX */
2414 mvmvif->deflink.mgmt_queue = mvm->probe_queue;
2415 }
2416
2417 return 0;
2418 }
2419
iwl_mvm_free_bcast_sta_queues(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2420 void iwl_mvm_free_bcast_sta_queues(struct iwl_mvm *mvm,
2421 struct ieee80211_vif *vif)
2422 {
2423 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2424 u16 *queueptr, queue;
2425
2426 lockdep_assert_held(&mvm->mutex);
2427
2428 iwl_mvm_flush_sta(mvm, mvmvif->deflink.bcast_sta.sta_id,
2429 mvmvif->deflink.bcast_sta.tfd_queue_msk);
2430
2431 switch (vif->type) {
2432 case NL80211_IFTYPE_AP:
2433 case NL80211_IFTYPE_ADHOC:
2434 queueptr = &mvm->probe_queue;
2435 break;
2436 case NL80211_IFTYPE_P2P_DEVICE:
2437 queueptr = &mvm->p2p_dev_queue;
2438 break;
2439 default:
2440 WARN(1, "Can't free bcast queue on vif type %d\n",
2441 vif->type);
2442 return;
2443 }
2444
2445 queue = *queueptr;
2446 iwl_mvm_disable_txq(mvm, NULL, mvmvif->deflink.bcast_sta.sta_id,
2447 queueptr, IWL_MAX_TID_COUNT);
2448
2449 if (vif->type == NL80211_IFTYPE_AP || vif->type == NL80211_IFTYPE_ADHOC)
2450 mvmvif->deflink.mgmt_queue = mvm->probe_queue;
2451
2452 if (iwl_mvm_has_new_tx_api(mvm))
2453 return;
2454
2455 WARN_ON(!(mvmvif->deflink.bcast_sta.tfd_queue_msk & BIT(queue)));
2456 mvmvif->deflink.bcast_sta.tfd_queue_msk &= ~BIT(queue);
2457 }
2458
2459 /* Send the FW a request to remove the station from its internal data
2460 * 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)2461 int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2462 {
2463 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2464 int ret;
2465
2466 lockdep_assert_held(&mvm->mutex);
2467
2468 iwl_mvm_free_bcast_sta_queues(mvm, vif);
2469
2470 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->deflink.bcast_sta.sta_id);
2471 if (ret)
2472 IWL_WARN(mvm, "Failed sending remove station\n");
2473 return ret;
2474 }
2475
iwl_mvm_alloc_bcast_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2476 int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2477 {
2478 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2479
2480 lockdep_assert_held(&mvm->mutex);
2481
2482 return iwl_mvm_allocate_int_sta(mvm, &mvmvif->deflink.bcast_sta, 0,
2483 ieee80211_vif_type_p2p(vif),
2484 IWL_STA_GENERAL_PURPOSE);
2485 }
2486
2487 /* Allocate a new station entry for the broadcast station to the given vif,
2488 * and send it to the FW.
2489 * Note that each P2P mac should have its own broadcast station.
2490 *
2491 * @mvm: the mvm component
2492 * @vif: the interface to which the broadcast station is added
2493 * @bsta: the broadcast station to add. */
iwl_mvm_add_p2p_bcast_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2494 int iwl_mvm_add_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2495 {
2496 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2497 struct iwl_mvm_int_sta *bsta = &mvmvif->deflink.bcast_sta;
2498 int ret;
2499
2500 lockdep_assert_held(&mvm->mutex);
2501
2502 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
2503 if (ret)
2504 return ret;
2505
2506 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2507
2508 if (ret)
2509 iwl_mvm_dealloc_int_sta(mvm, bsta);
2510
2511 return ret;
2512 }
2513
iwl_mvm_dealloc_bcast_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2514 void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2515 {
2516 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2517
2518 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->deflink.bcast_sta);
2519 }
2520
2521 /*
2522 * Send the FW a request to remove the station from its internal data
2523 * structures, and in addition remove it from the local data structure.
2524 */
iwl_mvm_rm_p2p_bcast_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2525 int iwl_mvm_rm_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2526 {
2527 int ret;
2528
2529 lockdep_assert_held(&mvm->mutex);
2530
2531 ret = iwl_mvm_send_rm_bcast_sta(mvm, vif);
2532
2533 iwl_mvm_dealloc_bcast_sta(mvm, vif);
2534
2535 return ret;
2536 }
2537
2538 /*
2539 * Allocate a new station entry for the multicast station to the given vif,
2540 * and send it to the FW.
2541 * Note that each AP/GO mac should have its own multicast station.
2542 *
2543 * @mvm: the mvm component
2544 * @vif: the interface to which the multicast station is added
2545 */
iwl_mvm_add_mcast_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2546 int iwl_mvm_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2547 {
2548 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2549 struct iwl_mvm_int_sta *msta = &mvmvif->deflink.mcast_sta;
2550 static const u8 _maddr[] = {0x03, 0x00, 0x00, 0x00, 0x00, 0x00};
2551 const u8 *maddr = _maddr;
2552 struct iwl_trans_txq_scd_cfg cfg = {
2553 .fifo = vif->type == NL80211_IFTYPE_AP ?
2554 IWL_MVM_TX_FIFO_MCAST : IWL_MVM_TX_FIFO_BE,
2555 .sta_id = msta->sta_id,
2556 .tid = 0,
2557 .aggregate = false,
2558 .frame_limit = IWL_FRAME_LIMIT,
2559 };
2560 unsigned int timeout = iwl_mvm_get_wd_timeout(mvm, vif);
2561 int ret;
2562
2563 lockdep_assert_held(&mvm->mutex);
2564
2565 if (WARN_ON(vif->type != NL80211_IFTYPE_AP &&
2566 vif->type != NL80211_IFTYPE_ADHOC))
2567 return -EOPNOTSUPP;
2568
2569 /*
2570 * In IBSS, ieee80211_check_queues() sets the cab_queue to be
2571 * invalid, so make sure we use the queue we want.
2572 * Note that this is done here as we want to avoid making DQA
2573 * changes in mac80211 layer.
2574 */
2575 if (vif->type == NL80211_IFTYPE_ADHOC)
2576 mvmvif->deflink.cab_queue = IWL_MVM_DQA_GCAST_QUEUE;
2577
2578 /*
2579 * While in previous FWs we had to exclude cab queue from TFD queue
2580 * mask, now it is needed as any other queue.
2581 */
2582 if (!iwl_mvm_has_new_tx_api(mvm) &&
2583 fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) {
2584 iwl_mvm_enable_txq(mvm, NULL, mvmvif->deflink.cab_queue, 0,
2585 &cfg,
2586 timeout);
2587 msta->tfd_queue_msk |= BIT(mvmvif->deflink.cab_queue);
2588 }
2589 ret = iwl_mvm_add_int_sta_common(mvm, msta, maddr,
2590 mvmvif->id, mvmvif->color);
2591 if (ret)
2592 goto err;
2593
2594 /*
2595 * Enable cab queue after the ADD_STA command is sent.
2596 * This is needed for 22000 firmware which won't accept SCD_QUEUE_CFG
2597 * command with unknown station id, and for FW that doesn't support
2598 * station API since the cab queue is not included in the
2599 * tfd_queue_mask.
2600 */
2601 if (iwl_mvm_has_new_tx_api(mvm)) {
2602 int queue = iwl_mvm_tvqm_enable_txq(mvm, NULL, msta->sta_id,
2603 0, timeout);
2604 if (queue < 0) {
2605 ret = queue;
2606 goto err;
2607 }
2608 mvmvif->deflink.cab_queue = queue;
2609 } else if (!fw_has_api(&mvm->fw->ucode_capa,
2610 IWL_UCODE_TLV_API_STA_TYPE))
2611 iwl_mvm_enable_txq(mvm, NULL, mvmvif->deflink.cab_queue, 0,
2612 &cfg,
2613 timeout);
2614
2615 return 0;
2616 err:
2617 iwl_mvm_dealloc_int_sta(mvm, msta);
2618 return ret;
2619 }
2620
__iwl_mvm_remove_sta_key(struct iwl_mvm * mvm,u8 sta_id,struct ieee80211_key_conf * keyconf,bool mcast)2621 static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id,
2622 struct ieee80211_key_conf *keyconf,
2623 bool mcast)
2624 {
2625 union {
2626 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1;
2627 struct iwl_mvm_add_sta_key_cmd cmd;
2628 } u = {};
2629 bool new_api = fw_has_api(&mvm->fw->ucode_capa,
2630 IWL_UCODE_TLV_API_TKIP_MIC_KEYS);
2631 __le16 key_flags;
2632 int ret, size;
2633 u32 status;
2634
2635 /* This is a valid situation for GTK removal */
2636 if (sta_id == IWL_INVALID_STA)
2637 return 0;
2638
2639 key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) &
2640 STA_KEY_FLG_KEYID_MSK);
2641 key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP);
2642 key_flags |= cpu_to_le16(STA_KEY_NOT_VALID);
2643
2644 if (mcast)
2645 key_flags |= cpu_to_le16(STA_KEY_MULTICAST);
2646
2647 /*
2648 * The fields assigned here are in the same location at the start
2649 * of the command, so we can do this union trick.
2650 */
2651 u.cmd.common.key_flags = key_flags;
2652 u.cmd.common.key_offset = keyconf->hw_key_idx;
2653 u.cmd.common.sta_id = sta_id;
2654
2655 size = new_api ? sizeof(u.cmd) : sizeof(u.cmd_v1);
2656
2657 status = ADD_STA_SUCCESS;
2658 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, &u.cmd,
2659 &status);
2660
2661 switch (status) {
2662 case ADD_STA_SUCCESS:
2663 IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n");
2664 break;
2665 default:
2666 ret = -EIO;
2667 IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n");
2668 break;
2669 }
2670
2671 return ret;
2672 }
2673
2674 /*
2675 * Send the FW a request to remove the station from its internal data
2676 * structures, and in addition remove it from the local data structure.
2677 */
iwl_mvm_rm_mcast_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2678 int iwl_mvm_rm_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2679 {
2680 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2681 int ret;
2682
2683 lockdep_assert_held(&mvm->mutex);
2684
2685 iwl_mvm_flush_sta(mvm, mvmvif->deflink.mcast_sta.sta_id,
2686 mvmvif->deflink.mcast_sta.tfd_queue_msk);
2687
2688 iwl_mvm_disable_txq(mvm, NULL, mvmvif->deflink.mcast_sta.sta_id,
2689 &mvmvif->deflink.cab_queue, 0);
2690
2691 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->deflink.mcast_sta.sta_id);
2692 if (ret)
2693 IWL_WARN(mvm, "Failed sending remove station\n");
2694
2695 return ret;
2696 }
2697
iwl_mvm_sync_rxq_del_ba(struct iwl_mvm * mvm,u8 baid)2698 static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid)
2699 {
2700 struct iwl_mvm_delba_data notif = {
2701 .baid = baid,
2702 };
2703
2704 iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_NOTIF_DEL_BA, true,
2705 ¬if, sizeof(notif));
2706 };
2707
iwl_mvm_free_reorder(struct iwl_mvm * mvm,struct iwl_mvm_baid_data * data)2708 static void iwl_mvm_free_reorder(struct iwl_mvm *mvm,
2709 struct iwl_mvm_baid_data *data)
2710 {
2711 int i;
2712
2713 iwl_mvm_sync_rxq_del_ba(mvm, data->baid);
2714
2715 for (i = 0; i < mvm->trans->info.num_rxqs; i++) {
2716 int j;
2717 struct iwl_mvm_reorder_buffer *reorder_buf =
2718 &data->reorder_buf[i];
2719 struct iwl_mvm_reorder_buf_entry *entries =
2720 &data->entries[i * data->entries_per_queue];
2721
2722 spin_lock_bh(&reorder_buf->lock);
2723 if (likely(!reorder_buf->num_stored)) {
2724 spin_unlock_bh(&reorder_buf->lock);
2725 continue;
2726 }
2727
2728 /*
2729 * This shouldn't happen in regular DELBA since the internal
2730 * delBA notification should trigger a release of all frames in
2731 * the reorder buffer.
2732 */
2733 WARN_ON(1);
2734
2735 for (j = 0; j < data->buf_size; j++)
2736 __skb_queue_purge(&entries[j].frames);
2737
2738 spin_unlock_bh(&reorder_buf->lock);
2739 }
2740 }
2741
iwl_mvm_init_reorder_buffer(struct iwl_mvm * mvm,struct iwl_mvm_baid_data * data,u16 ssn)2742 static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm,
2743 struct iwl_mvm_baid_data *data,
2744 u16 ssn)
2745 {
2746 int i;
2747
2748 for (i = 0; i < mvm->trans->info.num_rxqs; i++) {
2749 struct iwl_mvm_reorder_buffer *reorder_buf =
2750 &data->reorder_buf[i];
2751 struct iwl_mvm_reorder_buf_entry *entries =
2752 &data->entries[i * data->entries_per_queue];
2753 int j;
2754
2755 reorder_buf->num_stored = 0;
2756 reorder_buf->head_sn = ssn;
2757 spin_lock_init(&reorder_buf->lock);
2758 reorder_buf->queue = i;
2759 reorder_buf->valid = false;
2760 for (j = 0; j < data->buf_size; j++)
2761 __skb_queue_head_init(&entries[j].frames);
2762 }
2763 }
2764
iwl_mvm_fw_baid_op_sta(struct iwl_mvm * mvm,struct ieee80211_sta * sta,bool start,int tid,u16 ssn,u16 buf_size)2765 static int iwl_mvm_fw_baid_op_sta(struct iwl_mvm *mvm,
2766 struct ieee80211_sta *sta,
2767 bool start, int tid, u16 ssn,
2768 u16 buf_size)
2769 {
2770 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2771 struct iwl_mvm_add_sta_cmd cmd = {
2772 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color),
2773 .sta_id = mvm_sta->deflink.sta_id,
2774 .add_modify = STA_MODE_MODIFY,
2775 };
2776 u32 status;
2777 int ret;
2778
2779 if (start) {
2780 cmd.add_immediate_ba_tid = tid;
2781 cmd.add_immediate_ba_ssn = cpu_to_le16(ssn);
2782 cmd.rx_ba_window = cpu_to_le16(buf_size);
2783 cmd.modify_mask = STA_MODIFY_ADD_BA_TID;
2784 } else {
2785 cmd.remove_immediate_ba_tid = tid;
2786 cmd.modify_mask = STA_MODIFY_REMOVE_BA_TID;
2787 }
2788
2789 status = ADD_STA_SUCCESS;
2790 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
2791 iwl_mvm_add_sta_cmd_size(mvm),
2792 &cmd, &status);
2793 if (ret)
2794 return ret;
2795
2796 switch (status & IWL_ADD_STA_STATUS_MASK) {
2797 case ADD_STA_SUCCESS:
2798 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n",
2799 start ? "start" : "stopp");
2800 if (WARN_ON(start && iwl_mvm_has_new_rx_api(mvm) &&
2801 !(status & IWL_ADD_STA_BAID_VALID_MASK)))
2802 return -EINVAL;
2803 return u32_get_bits(status, IWL_ADD_STA_BAID_MASK);
2804 case ADD_STA_IMMEDIATE_BA_FAILURE:
2805 IWL_WARN(mvm, "RX BA Session refused by fw\n");
2806 return -ENOSPC;
2807 default:
2808 IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n",
2809 start ? "start" : "stopp", status);
2810 return -EIO;
2811 }
2812 }
2813
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)2814 static int iwl_mvm_fw_baid_op_cmd(struct iwl_mvm *mvm,
2815 struct ieee80211_sta *sta,
2816 bool start, int tid, u16 ssn,
2817 u16 buf_size, int baid)
2818 {
2819 struct iwl_rx_baid_cfg_cmd cmd = {
2820 .action = start ? cpu_to_le32(IWL_RX_BAID_ACTION_ADD) :
2821 cpu_to_le32(IWL_RX_BAID_ACTION_REMOVE),
2822 };
2823 struct iwl_host_cmd hcmd = {
2824 .id = WIDE_ID(DATA_PATH_GROUP, RX_BAID_ALLOCATION_CONFIG_CMD),
2825 .flags = CMD_SEND_IN_RFKILL,
2826 .len[0] = sizeof(cmd),
2827 .data[0] = &cmd,
2828 };
2829 int ret;
2830
2831 BUILD_BUG_ON(sizeof(struct iwl_rx_baid_cfg_resp) != sizeof(baid));
2832
2833 if (start) {
2834 cmd.alloc.sta_id_mask =
2835 cpu_to_le32(iwl_mvm_sta_fw_id_mask(mvm, sta, -1));
2836 cmd.alloc.tid = tid;
2837 cmd.alloc.ssn = cpu_to_le16(ssn);
2838 cmd.alloc.win_size = cpu_to_le16(buf_size);
2839 baid = -EIO;
2840 } else if (iwl_fw_lookup_cmd_ver(mvm->fw, hcmd.id, 1) == 1) {
2841 cmd.remove_v1.baid = cpu_to_le32(baid);
2842 BUILD_BUG_ON(sizeof(cmd.remove_v1) > sizeof(cmd.remove));
2843 } else {
2844 cmd.remove.sta_id_mask =
2845 cpu_to_le32(iwl_mvm_sta_fw_id_mask(mvm, sta, -1));
2846 cmd.remove.tid = cpu_to_le32(tid);
2847 }
2848
2849 ret = iwl_mvm_send_cmd_status(mvm, &hcmd, &baid);
2850 if (ret)
2851 return ret;
2852
2853 if (!start) {
2854 /* ignore firmware baid on remove */
2855 baid = 0;
2856 }
2857
2858 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n",
2859 start ? "start" : "stopp");
2860
2861 if (baid < 0 || baid >= ARRAY_SIZE(mvm->baid_map))
2862 return -EINVAL;
2863
2864 return baid;
2865 }
2866
iwl_mvm_fw_baid_op(struct iwl_mvm * mvm,struct ieee80211_sta * sta,bool start,int tid,u16 ssn,u16 buf_size,int baid)2867 static int iwl_mvm_fw_baid_op(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
2868 bool start, int tid, u16 ssn, u16 buf_size,
2869 int baid)
2870 {
2871 if (fw_has_capa(&mvm->fw->ucode_capa,
2872 IWL_UCODE_TLV_CAPA_BAID_ML_SUPPORT))
2873 return iwl_mvm_fw_baid_op_cmd(mvm, sta, start,
2874 tid, ssn, buf_size, baid);
2875
2876 return iwl_mvm_fw_baid_op_sta(mvm, sta, start,
2877 tid, ssn, buf_size);
2878 }
2879
iwl_mvm_sta_rx_agg(struct iwl_mvm * mvm,struct ieee80211_sta * sta,int tid,u16 ssn,bool start,u16 buf_size,u16 timeout)2880 int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
2881 int tid, u16 ssn, bool start, u16 buf_size, u16 timeout)
2882 {
2883 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2884 struct iwl_mvm_baid_data *baid_data = NULL;
2885 int ret, baid;
2886 u32 max_ba_id_sessions = iwl_mvm_has_new_tx_api(mvm) ? IWL_MAX_BAID :
2887 IWL_MAX_BAID_OLD;
2888
2889 lockdep_assert_held(&mvm->mutex);
2890
2891 if (start && mvm->rx_ba_sessions >= max_ba_id_sessions) {
2892 IWL_WARN(mvm, "Not enough RX BA SESSIONS\n");
2893 return -ENOSPC;
2894 }
2895
2896 if (iwl_mvm_has_new_rx_api(mvm) && start) {
2897 u32 reorder_buf_size = buf_size * sizeof(baid_data->entries[0]);
2898
2899 /* sparse doesn't like the __align() so don't check */
2900 #ifndef __CHECKER__
2901 /*
2902 * The division below will be OK if either the cache line size
2903 * can be divided by the entry size (ALIGN will round up) or if
2904 * the entry size can be divided by the cache line size, in
2905 * which case the ALIGN() will do nothing.
2906 */
2907 BUILD_BUG_ON(SMP_CACHE_BYTES % sizeof(baid_data->entries[0]) &&
2908 sizeof(baid_data->entries[0]) % SMP_CACHE_BYTES);
2909 #endif
2910
2911 /*
2912 * Upward align the reorder buffer size to fill an entire cache
2913 * line for each queue, to avoid sharing cache lines between
2914 * different queues.
2915 */
2916 reorder_buf_size = ALIGN(reorder_buf_size, SMP_CACHE_BYTES);
2917
2918 /*
2919 * Allocate here so if allocation fails we can bail out early
2920 * before starting the BA session in the firmware
2921 */
2922 baid_data = kzalloc(sizeof(*baid_data) +
2923 mvm->trans->info.num_rxqs *
2924 reorder_buf_size,
2925 GFP_KERNEL);
2926 if (!baid_data)
2927 return -ENOMEM;
2928
2929 /*
2930 * This division is why we need the above BUILD_BUG_ON(),
2931 * if that doesn't hold then this will not be right.
2932 */
2933 baid_data->entries_per_queue =
2934 reorder_buf_size / sizeof(baid_data->entries[0]);
2935 }
2936
2937 if (iwl_mvm_has_new_rx_api(mvm) && !start) {
2938 baid = mvm_sta->tid_to_baid[tid];
2939 } else {
2940 /* we don't really need it in this case */
2941 baid = -1;
2942 }
2943
2944 /* Don't send command to remove (start=0) BAID during restart */
2945 if (start || !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
2946 baid = iwl_mvm_fw_baid_op(mvm, sta, start, tid, ssn, buf_size,
2947 baid);
2948
2949 if (baid < 0) {
2950 ret = baid;
2951 goto out_free;
2952 }
2953
2954 if (start) {
2955 mvm->rx_ba_sessions++;
2956
2957 if (!iwl_mvm_has_new_rx_api(mvm))
2958 return 0;
2959
2960 baid_data->baid = baid;
2961 baid_data->timeout = timeout;
2962 baid_data->last_rx = jiffies;
2963 baid_data->rcu_ptr = &mvm->baid_map[baid];
2964 timer_setup(&baid_data->session_timer,
2965 iwl_mvm_rx_agg_session_expired, 0);
2966 baid_data->mvm = mvm;
2967 baid_data->tid = tid;
2968 baid_data->sta_mask = iwl_mvm_sta_fw_id_mask(mvm, sta, -1);
2969 baid_data->buf_size = buf_size;
2970
2971 mvm_sta->tid_to_baid[tid] = baid;
2972 if (timeout)
2973 mod_timer(&baid_data->session_timer,
2974 TU_TO_EXP_TIME(timeout * 2));
2975
2976 iwl_mvm_init_reorder_buffer(mvm, baid_data, ssn);
2977 /*
2978 * protect the BA data with RCU to cover a case where our
2979 * internal RX sync mechanism will timeout (not that it's
2980 * supposed to happen) and we will free the session data while
2981 * RX is being processed in parallel
2982 */
2983 IWL_DEBUG_HT(mvm, "Sta %d(%d) is assigned to BAID %d\n",
2984 mvm_sta->deflink.sta_id, tid, baid);
2985 WARN_ON(rcu_access_pointer(mvm->baid_map[baid]));
2986 rcu_assign_pointer(mvm->baid_map[baid], baid_data);
2987 } else {
2988 baid = mvm_sta->tid_to_baid[tid];
2989
2990 if (mvm->rx_ba_sessions > 0)
2991 /* check that restart flow didn't zero the counter */
2992 mvm->rx_ba_sessions--;
2993 if (!iwl_mvm_has_new_rx_api(mvm))
2994 return 0;
2995
2996 if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID))
2997 return -EINVAL;
2998
2999 baid_data = rcu_access_pointer(mvm->baid_map[baid]);
3000 if (WARN_ON(!baid_data))
3001 return -EINVAL;
3002
3003 /* synchronize all rx queues so we can safely delete */
3004 iwl_mvm_free_reorder(mvm, baid_data);
3005 timer_shutdown_sync(&baid_data->session_timer);
3006 RCU_INIT_POINTER(mvm->baid_map[baid], NULL);
3007 kfree_rcu(baid_data, rcu_head);
3008 IWL_DEBUG_HT(mvm, "BAID %d is free\n", baid);
3009 }
3010 return 0;
3011
3012 out_free:
3013 kfree(baid_data);
3014 return ret;
3015 }
3016
iwl_mvm_sta_tx_agg(struct iwl_mvm * mvm,struct ieee80211_sta * sta,int tid,u8 queue,bool start)3017 int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
3018 int tid, u8 queue, bool start)
3019 {
3020 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3021 struct iwl_mvm_add_sta_cmd cmd = {};
3022 int ret;
3023 u32 status;
3024
3025 lockdep_assert_held(&mvm->mutex);
3026
3027 if (start) {
3028 mvm_sta->tfd_queue_msk |= BIT(queue);
3029 mvm_sta->tid_disable_agg &= ~BIT(tid);
3030 } else {
3031 /* In DQA-mode the queue isn't removed on agg termination */
3032 mvm_sta->tid_disable_agg |= BIT(tid);
3033 }
3034
3035 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color);
3036 cmd.sta_id = mvm_sta->deflink.sta_id;
3037 cmd.add_modify = STA_MODE_MODIFY;
3038 if (!iwl_mvm_has_new_tx_api(mvm))
3039 cmd.modify_mask = STA_MODIFY_QUEUES;
3040 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX;
3041 cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk);
3042 cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg);
3043
3044 status = ADD_STA_SUCCESS;
3045 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
3046 iwl_mvm_add_sta_cmd_size(mvm),
3047 &cmd, &status);
3048 if (ret)
3049 return ret;
3050
3051 switch (status & IWL_ADD_STA_STATUS_MASK) {
3052 case ADD_STA_SUCCESS:
3053 break;
3054 default:
3055 ret = -EIO;
3056 IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n",
3057 start ? "start" : "stopp", status);
3058 break;
3059 }
3060
3061 return ret;
3062 }
3063
3064 const u8 tid_to_mac80211_ac[] = {
3065 IEEE80211_AC_BE,
3066 IEEE80211_AC_BK,
3067 IEEE80211_AC_BK,
3068 IEEE80211_AC_BE,
3069 IEEE80211_AC_VI,
3070 IEEE80211_AC_VI,
3071 IEEE80211_AC_VO,
3072 IEEE80211_AC_VO,
3073 IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */
3074 };
3075
3076 static const u8 tid_to_ucode_ac[] = {
3077 AC_BE,
3078 AC_BK,
3079 AC_BK,
3080 AC_BE,
3081 AC_VI,
3082 AC_VI,
3083 AC_VO,
3084 AC_VO,
3085 };
3086
iwl_mvm_sta_tx_agg_start(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * sta,u16 tid,u16 * ssn)3087 int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
3088 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3089 {
3090 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3091 struct iwl_mvm_tid_data *tid_data;
3092 u16 normalized_ssn;
3093 u16 txq_id;
3094 int ret;
3095
3096 if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT))
3097 return -EINVAL;
3098
3099 if (mvmsta->tid_data[tid].state != IWL_AGG_QUEUED &&
3100 mvmsta->tid_data[tid].state != IWL_AGG_OFF) {
3101 IWL_ERR(mvm,
3102 "Start AGG when state is not IWL_AGG_QUEUED or IWL_AGG_OFF %d!\n",
3103 mvmsta->tid_data[tid].state);
3104 return -ENXIO;
3105 }
3106
3107 lockdep_assert_held(&mvm->mutex);
3108
3109 if (mvmsta->tid_data[tid].txq_id == IWL_MVM_INVALID_QUEUE &&
3110 iwl_mvm_has_new_tx_api(mvm)) {
3111 u8 ac = tid_to_mac80211_ac[tid];
3112
3113 ret = iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid);
3114 if (ret)
3115 return ret;
3116 }
3117
3118 spin_lock_bh(&mvmsta->lock);
3119
3120 /*
3121 * Note the possible cases:
3122 * 1. An enabled TXQ - TXQ needs to become agg'ed
3123 * 2. The TXQ hasn't yet been enabled, so find a free one and mark
3124 * it as reserved
3125 */
3126 txq_id = mvmsta->tid_data[tid].txq_id;
3127 if (txq_id == IWL_MVM_INVALID_QUEUE) {
3128 ret = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id,
3129 IWL_MVM_DQA_MIN_DATA_QUEUE,
3130 IWL_MVM_DQA_MAX_DATA_QUEUE);
3131 if (ret < 0) {
3132 IWL_ERR(mvm, "Failed to allocate agg queue\n");
3133 goto out;
3134 }
3135
3136 txq_id = ret;
3137
3138 /* TXQ hasn't yet been enabled, so mark it only as reserved */
3139 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED;
3140 } else if (WARN_ON(txq_id >= IWL_MAX_HW_QUEUES)) {
3141 ret = -ENXIO;
3142 IWL_ERR(mvm, "tid_id %d out of range (0, %d)!\n",
3143 tid, IWL_MAX_HW_QUEUES - 1);
3144 goto out;
3145
3146 } else if (unlikely(mvm->queue_info[txq_id].status ==
3147 IWL_MVM_QUEUE_SHARED)) {
3148 ret = -ENXIO;
3149 IWL_DEBUG_TX_QUEUES(mvm,
3150 "Can't start tid %d agg on shared queue!\n",
3151 tid);
3152 goto out;
3153 }
3154
3155 IWL_DEBUG_TX_QUEUES(mvm,
3156 "AGG for tid %d will be on queue #%d\n",
3157 tid, txq_id);
3158
3159 tid_data = &mvmsta->tid_data[tid];
3160 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
3161 tid_data->txq_id = txq_id;
3162 *ssn = tid_data->ssn;
3163
3164 IWL_DEBUG_TX_QUEUES(mvm,
3165 "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n",
3166 mvmsta->deflink.sta_id, tid, txq_id,
3167 tid_data->ssn,
3168 tid_data->next_reclaimed);
3169
3170 /*
3171 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need
3172 * to align the wrap around of ssn so we compare relevant values.
3173 */
3174 normalized_ssn = tid_data->ssn;
3175 if (mvm->trans->mac_cfg->gen2)
3176 normalized_ssn &= 0xff;
3177
3178 if (normalized_ssn == tid_data->next_reclaimed) {
3179 tid_data->state = IWL_AGG_STARTING;
3180 ret = IEEE80211_AMPDU_TX_START_IMMEDIATE;
3181 } else {
3182 tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA;
3183 ret = IEEE80211_AMPDU_TX_START_DELAY_ADDBA;
3184 }
3185
3186 out:
3187 spin_unlock_bh(&mvmsta->lock);
3188
3189 return ret;
3190 }
3191
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)3192 int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
3193 struct ieee80211_sta *sta, u16 tid, u16 buf_size,
3194 bool amsdu)
3195 {
3196 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3197 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
3198 unsigned int wdg_timeout =
3199 iwl_mvm_get_wd_timeout(mvm, vif);
3200 int queue, ret;
3201 bool alloc_queue = true;
3202 enum iwl_mvm_queue_status queue_status;
3203 u16 ssn;
3204
3205 struct iwl_trans_txq_scd_cfg cfg = {
3206 .sta_id = mvmsta->deflink.sta_id,
3207 .tid = tid,
3208 .frame_limit = buf_size,
3209 .aggregate = true,
3210 };
3211
3212 /*
3213 * When FW supports TLC_OFFLOAD, it also implements Tx aggregation
3214 * manager, so this function should never be called in this case.
3215 */
3216 if (WARN_ON_ONCE(iwl_mvm_has_tlc_offload(mvm)))
3217 return -EINVAL;
3218
3219 BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE)
3220 != IWL_MAX_TID_COUNT);
3221
3222 spin_lock_bh(&mvmsta->lock);
3223 ssn = tid_data->ssn;
3224 queue = tid_data->txq_id;
3225 tid_data->state = IWL_AGG_ON;
3226 mvmsta->agg_tids |= BIT(tid);
3227 tid_data->ssn = 0xffff;
3228 tid_data->amsdu_in_ampdu_allowed = amsdu;
3229 spin_unlock_bh(&mvmsta->lock);
3230
3231 if (iwl_mvm_has_new_tx_api(mvm)) {
3232 /*
3233 * If there is no queue for this tid, iwl_mvm_sta_tx_agg_start()
3234 * would have failed, so if we are here there is no need to
3235 * allocate a queue.
3236 * However, if aggregation size is different than the default
3237 * size, the scheduler should be reconfigured.
3238 * We cannot do this with the new TX API, so return unsupported
3239 * for now, until it will be offloaded to firmware..
3240 * Note that if SCD default value changes - this condition
3241 * should be updated as well.
3242 */
3243 if (buf_size < IWL_FRAME_LIMIT)
3244 return -EOPNOTSUPP;
3245
3246 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);
3247 if (ret)
3248 return -EIO;
3249 goto out;
3250 }
3251
3252 cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]];
3253
3254 queue_status = mvm->queue_info[queue].status;
3255
3256 /* Maybe there is no need to even alloc a queue... */
3257 if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY)
3258 alloc_queue = false;
3259
3260 /*
3261 * Only reconfig the SCD for the queue if the window size has
3262 * changed from current (become smaller)
3263 */
3264 if (!alloc_queue && buf_size < IWL_FRAME_LIMIT) {
3265 /*
3266 * If reconfiguring an existing queue, it first must be
3267 * drained
3268 */
3269 ret = iwl_trans_wait_tx_queues_empty(mvm->trans,
3270 BIT(queue));
3271 if (ret) {
3272 IWL_ERR(mvm,
3273 "Error draining queue before reconfig\n");
3274 return ret;
3275 }
3276
3277 ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo,
3278 mvmsta->deflink.sta_id, tid,
3279 buf_size, ssn);
3280 if (ret) {
3281 IWL_ERR(mvm,
3282 "Error reconfiguring TXQ #%d\n", queue);
3283 return ret;
3284 }
3285 }
3286
3287 if (alloc_queue)
3288 iwl_mvm_enable_txq(mvm, sta, queue, ssn,
3289 &cfg, wdg_timeout);
3290
3291 /* Send ADD_STA command to enable aggs only if the queue isn't shared */
3292 if (queue_status != IWL_MVM_QUEUE_SHARED) {
3293 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);
3294 if (ret)
3295 return -EIO;
3296 }
3297
3298 /* No need to mark as reserved */
3299 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY;
3300
3301 out:
3302 /*
3303 * Even though in theory the peer could have different
3304 * aggregation reorder buffer sizes for different sessions,
3305 * our ucode doesn't allow for that and has a global limit
3306 * for each station. Therefore, use the minimum of all the
3307 * aggregation sessions and our default value.
3308 */
3309 mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize =
3310 min(mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize,
3311 buf_size);
3312 mvmsta->deflink.lq_sta.rs_drv.lq.agg_frame_cnt_limit =
3313 mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize;
3314
3315 IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n",
3316 sta->addr, tid);
3317
3318 return iwl_mvm_send_lq_cmd(mvm, &mvmsta->deflink.lq_sta.rs_drv.lq);
3319 }
3320
iwl_mvm_unreserve_agg_queue(struct iwl_mvm * mvm,struct iwl_mvm_sta * mvmsta,struct iwl_mvm_tid_data * tid_data)3321 static void iwl_mvm_unreserve_agg_queue(struct iwl_mvm *mvm,
3322 struct iwl_mvm_sta *mvmsta,
3323 struct iwl_mvm_tid_data *tid_data)
3324 {
3325 u16 txq_id = tid_data->txq_id;
3326
3327 lockdep_assert_held(&mvm->mutex);
3328
3329 if (iwl_mvm_has_new_tx_api(mvm))
3330 return;
3331
3332 /*
3333 * The TXQ is marked as reserved only if no traffic came through yet
3334 * This means no traffic has been sent on this TID (agg'd or not), so
3335 * we no longer have use for the queue. Since it hasn't even been
3336 * allocated through iwl_mvm_enable_txq, so we can just mark it back as
3337 * free.
3338 */
3339 if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) {
3340 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE;
3341 tid_data->txq_id = IWL_MVM_INVALID_QUEUE;
3342 }
3343 }
3344
iwl_mvm_sta_tx_agg_stop(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * sta,u16 tid)3345 int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
3346 struct ieee80211_sta *sta, u16 tid)
3347 {
3348 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3349 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
3350 u16 txq_id;
3351 int err;
3352
3353 /*
3354 * If mac80211 is cleaning its state, then say that we finished since
3355 * our state has been cleared anyway.
3356 */
3357 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
3358 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
3359 return 0;
3360 }
3361
3362 spin_lock_bh(&mvmsta->lock);
3363
3364 txq_id = tid_data->txq_id;
3365
3366 IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n",
3367 mvmsta->deflink.sta_id, tid, txq_id,
3368 tid_data->state);
3369
3370 mvmsta->agg_tids &= ~BIT(tid);
3371
3372 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data);
3373
3374 switch (tid_data->state) {
3375 case IWL_AGG_ON:
3376 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
3377
3378 IWL_DEBUG_TX_QUEUES(mvm,
3379 "ssn = %d, next_recl = %d\n",
3380 tid_data->ssn, tid_data->next_reclaimed);
3381
3382 tid_data->ssn = 0xffff;
3383 tid_data->state = IWL_AGG_OFF;
3384 spin_unlock_bh(&mvmsta->lock);
3385
3386 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
3387
3388 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false);
3389 return 0;
3390 case IWL_AGG_STARTING:
3391 case IWL_EMPTYING_HW_QUEUE_ADDBA:
3392 /*
3393 * The agg session has been stopped before it was set up. This
3394 * can happen when the AddBA timer times out for example.
3395 */
3396
3397 /* No barriers since we are under mutex */
3398 lockdep_assert_held(&mvm->mutex);
3399
3400 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
3401 tid_data->state = IWL_AGG_OFF;
3402 err = 0;
3403 break;
3404 default:
3405 IWL_ERR(mvm,
3406 "Stopping AGG while state not ON or starting for %d on %d (%d)\n",
3407 mvmsta->deflink.sta_id, tid, tid_data->state);
3408 IWL_ERR(mvm,
3409 "\ttid_data->txq_id = %d\n", tid_data->txq_id);
3410 err = -EINVAL;
3411 }
3412
3413 spin_unlock_bh(&mvmsta->lock);
3414
3415 return err;
3416 }
3417
iwl_mvm_sta_tx_agg_flush(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * sta,u16 tid)3418 int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
3419 struct ieee80211_sta *sta, u16 tid)
3420 {
3421 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3422 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
3423 u16 txq_id;
3424 enum iwl_mvm_agg_state old_state;
3425
3426 /*
3427 * First set the agg state to OFF to avoid calling
3428 * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty.
3429 */
3430 spin_lock_bh(&mvmsta->lock);
3431 txq_id = tid_data->txq_id;
3432 IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n",
3433 mvmsta->deflink.sta_id, tid, txq_id,
3434 tid_data->state);
3435 old_state = tid_data->state;
3436 tid_data->state = IWL_AGG_OFF;
3437 mvmsta->agg_tids &= ~BIT(tid);
3438 spin_unlock_bh(&mvmsta->lock);
3439
3440 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data);
3441
3442 if (old_state >= IWL_AGG_ON) {
3443 iwl_mvm_drain_sta(mvm, mvmsta, true);
3444
3445 if (iwl_mvm_has_new_tx_api(mvm)) {
3446 if (iwl_mvm_flush_sta_tids(mvm, mvmsta->deflink.sta_id,
3447 BIT(tid)))
3448 IWL_ERR(mvm, "Couldn't flush the AGG queue\n");
3449 iwl_trans_wait_txq_empty(mvm->trans, txq_id);
3450 } else {
3451 if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id)))
3452 IWL_ERR(mvm, "Couldn't flush the AGG queue\n");
3453 iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(txq_id));
3454 }
3455
3456 iwl_mvm_drain_sta(mvm, mvmsta, false);
3457
3458 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false);
3459 }
3460
3461 return 0;
3462 }
3463
iwl_mvm_set_fw_key_idx(struct iwl_mvm * mvm)3464 static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm)
3465 {
3466 int i, max = -1, max_offs = -1;
3467
3468 lockdep_assert_held(&mvm->mutex);
3469
3470 /* Pick the unused key offset with the highest 'deleted'
3471 * counter. Every time a key is deleted, all the counters
3472 * are incremented and the one that was just deleted is
3473 * reset to zero. Thus, the highest counter is the one
3474 * that was deleted longest ago. Pick that one.
3475 */
3476 for (i = 0; i < STA_KEY_MAX_NUM; i++) {
3477 if (test_bit(i, mvm->fw_key_table))
3478 continue;
3479 if (mvm->fw_key_deleted[i] > max) {
3480 max = mvm->fw_key_deleted[i];
3481 max_offs = i;
3482 }
3483 }
3484
3485 if (max_offs < 0)
3486 return STA_KEY_IDX_INVALID;
3487
3488 return max_offs;
3489 }
3490
iwl_mvm_get_key_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * sta)3491 static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm,
3492 struct ieee80211_vif *vif,
3493 struct ieee80211_sta *sta)
3494 {
3495 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3496
3497 if (sta)
3498 return iwl_mvm_sta_from_mac80211(sta);
3499
3500 /*
3501 * The device expects GTKs for station interfaces to be
3502 * installed as GTKs for the AP station. If we have no
3503 * station ID, then use AP's station ID.
3504 */
3505 if (vif->type == NL80211_IFTYPE_STATION &&
3506 mvmvif->deflink.ap_sta_id != IWL_INVALID_STA) {
3507 u8 sta_id = mvmvif->deflink.ap_sta_id;
3508
3509 sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id],
3510 lockdep_is_held(&mvm->mutex));
3511
3512 /*
3513 * It is possible that the 'sta' parameter is NULL,
3514 * for example when a GTK is removed - the sta_id will then
3515 * be the AP ID, and no station was passed by mac80211.
3516 */
3517 if (IS_ERR_OR_NULL(sta))
3518 return NULL;
3519
3520 return iwl_mvm_sta_from_mac80211(sta);
3521 }
3522
3523 return NULL;
3524 }
3525
iwl_mvm_pn_cmp(const u8 * pn1,const u8 * pn2,int len)3526 static int iwl_mvm_pn_cmp(const u8 *pn1, const u8 *pn2, int len)
3527 {
3528 int i;
3529
3530 for (i = len - 1; i >= 0; i--) {
3531 if (pn1[i] > pn2[i])
3532 return 1;
3533 if (pn1[i] < pn2[i])
3534 return -1;
3535 }
3536
3537 return 0;
3538 }
3539
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)3540 static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm,
3541 u32 sta_id,
3542 struct ieee80211_key_conf *key, bool mcast,
3543 u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags,
3544 u8 key_offset, bool mfp)
3545 {
3546 union {
3547 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1;
3548 struct iwl_mvm_add_sta_key_cmd cmd;
3549 } u = {};
3550 __le16 key_flags;
3551 int ret;
3552 u32 status;
3553 u16 keyidx;
3554 u64 pn = 0;
3555 int i, size;
3556 bool new_api = fw_has_api(&mvm->fw->ucode_capa,
3557 IWL_UCODE_TLV_API_TKIP_MIC_KEYS);
3558 int api_ver = iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA_KEY,
3559 new_api ? 2 : 1);
3560
3561 if (sta_id == IWL_INVALID_STA)
3562 return -EINVAL;
3563
3564 keyidx = (key->keyidx << STA_KEY_FLG_KEYID_POS) &
3565 STA_KEY_FLG_KEYID_MSK;
3566 key_flags = cpu_to_le16(keyidx);
3567 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP);
3568
3569 if (key->flags & IEEE80211_KEY_FLAG_SPP_AMSDU)
3570 key_flags |= cpu_to_le16(STA_KEY_FLG_AMSDU_SPP);
3571
3572 switch (key->cipher) {
3573 case WLAN_CIPHER_SUITE_TKIP:
3574 key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP);
3575 if (api_ver >= 2) {
3576 memcpy((void *)&u.cmd.tx_mic_key,
3577 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
3578 IWL_MIC_KEY_SIZE);
3579
3580 memcpy((void *)&u.cmd.rx_mic_key,
3581 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
3582 IWL_MIC_KEY_SIZE);
3583 pn = atomic64_read(&key->tx_pn);
3584
3585 } else {
3586 u.cmd_v1.tkip_rx_tsc_byte2 = tkip_iv32;
3587 for (i = 0; i < 5; i++)
3588 u.cmd_v1.tkip_rx_ttak[i] =
3589 cpu_to_le16(tkip_p1k[i]);
3590 }
3591 memcpy(u.cmd.common.key, key->key, key->keylen);
3592 break;
3593 case WLAN_CIPHER_SUITE_CCMP:
3594 key_flags |= cpu_to_le16(STA_KEY_FLG_CCM);
3595 memcpy(u.cmd.common.key, key->key, key->keylen);
3596 if (api_ver >= 2)
3597 pn = atomic64_read(&key->tx_pn);
3598 break;
3599 case WLAN_CIPHER_SUITE_WEP104:
3600 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES);
3601 fallthrough;
3602 case WLAN_CIPHER_SUITE_WEP40:
3603 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP);
3604 memcpy(u.cmd.common.key + 3, key->key, key->keylen);
3605 break;
3606 case WLAN_CIPHER_SUITE_GCMP_256:
3607 key_flags |= cpu_to_le16(STA_KEY_FLG_KEY_32BYTES);
3608 fallthrough;
3609 case WLAN_CIPHER_SUITE_GCMP:
3610 key_flags |= cpu_to_le16(STA_KEY_FLG_GCMP);
3611 memcpy(u.cmd.common.key, key->key, key->keylen);
3612 if (api_ver >= 2)
3613 pn = atomic64_read(&key->tx_pn);
3614 break;
3615 default:
3616 key_flags |= cpu_to_le16(STA_KEY_FLG_EXT);
3617 memcpy(u.cmd.common.key, key->key, key->keylen);
3618 }
3619
3620 if (mcast)
3621 key_flags |= cpu_to_le16(STA_KEY_MULTICAST);
3622 if (mfp)
3623 key_flags |= cpu_to_le16(STA_KEY_MFP);
3624
3625 u.cmd.common.key_offset = key_offset;
3626 u.cmd.common.key_flags = key_flags;
3627 u.cmd.common.sta_id = sta_id;
3628
3629 if (key->cipher == WLAN_CIPHER_SUITE_TKIP)
3630 i = 0;
3631 else
3632 i = -1;
3633
3634 for (; i < IEEE80211_NUM_TIDS; i++) {
3635 struct ieee80211_key_seq seq = {};
3636 u8 _rx_pn[IEEE80211_MAX_PN_LEN] = {}, *rx_pn = _rx_pn;
3637 int rx_pn_len = 8;
3638 /* there's a hole at 2/3 in FW format depending on version */
3639 int hole = api_ver >= 3 ? 0 : 2;
3640
3641 ieee80211_get_key_rx_seq(key, i, &seq);
3642
3643 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) {
3644 rx_pn[0] = seq.tkip.iv16;
3645 rx_pn[1] = seq.tkip.iv16 >> 8;
3646 rx_pn[2 + hole] = seq.tkip.iv32;
3647 rx_pn[3 + hole] = seq.tkip.iv32 >> 8;
3648 rx_pn[4 + hole] = seq.tkip.iv32 >> 16;
3649 rx_pn[5 + hole] = seq.tkip.iv32 >> 24;
3650 } else if (key_flags & cpu_to_le16(STA_KEY_FLG_EXT)) {
3651 rx_pn = seq.hw.seq;
3652 rx_pn_len = seq.hw.seq_len;
3653 } else {
3654 rx_pn[0] = seq.ccmp.pn[0];
3655 rx_pn[1] = seq.ccmp.pn[1];
3656 rx_pn[2 + hole] = seq.ccmp.pn[2];
3657 rx_pn[3 + hole] = seq.ccmp.pn[3];
3658 rx_pn[4 + hole] = seq.ccmp.pn[4];
3659 rx_pn[5 + hole] = seq.ccmp.pn[5];
3660 }
3661
3662 if (iwl_mvm_pn_cmp(rx_pn, (u8 *)&u.cmd.common.rx_secur_seq_cnt,
3663 rx_pn_len) > 0)
3664 memcpy(&u.cmd.common.rx_secur_seq_cnt, rx_pn,
3665 rx_pn_len);
3666 }
3667
3668 if (api_ver >= 2) {
3669 u.cmd.transmit_seq_cnt = cpu_to_le64(pn);
3670 size = sizeof(u.cmd);
3671 } else {
3672 size = sizeof(u.cmd_v1);
3673 }
3674
3675 status = ADD_STA_SUCCESS;
3676 if (cmd_flags & CMD_ASYNC)
3677 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, size,
3678 &u.cmd);
3679 else
3680 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size,
3681 &u.cmd, &status);
3682
3683 switch (status) {
3684 case ADD_STA_SUCCESS:
3685 IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n");
3686 break;
3687 default:
3688 ret = -EIO;
3689 IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n");
3690 break;
3691 }
3692
3693 return ret;
3694 }
3695
iwl_mvm_send_sta_igtk(struct iwl_mvm * mvm,struct ieee80211_key_conf * keyconf,u8 sta_id,bool remove_key)3696 static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm,
3697 struct ieee80211_key_conf *keyconf,
3698 u8 sta_id, bool remove_key)
3699 {
3700 struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {};
3701
3702 /* verify the key details match the required command's expectations */
3703 if (WARN_ON((keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) ||
3704 (keyconf->keyidx != 4 && keyconf->keyidx != 5 &&
3705 keyconf->keyidx != 6 && keyconf->keyidx != 7) ||
3706 (keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC &&
3707 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_128 &&
3708 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_256)))
3709 return -EINVAL;
3710
3711 if (WARN_ON(!iwl_mvm_has_new_rx_api(mvm) &&
3712 keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC))
3713 return -EINVAL;
3714
3715 igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx);
3716 igtk_cmd.sta_id = cpu_to_le32(sta_id);
3717
3718 if (remove_key) {
3719 /* This is a valid situation for IGTK */
3720 if (sta_id == IWL_INVALID_STA)
3721 return 0;
3722
3723 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID);
3724 } else {
3725 struct ieee80211_key_seq seq;
3726 const u8 *pn;
3727
3728 switch (keyconf->cipher) {
3729 case WLAN_CIPHER_SUITE_AES_CMAC:
3730 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM);
3731 break;
3732 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
3733 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
3734 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_GCMP);
3735 break;
3736 default:
3737 return -EINVAL;
3738 }
3739
3740 memcpy(igtk_cmd.igtk, keyconf->key, keyconf->keylen);
3741 if (keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
3742 igtk_cmd.ctrl_flags |=
3743 cpu_to_le32(STA_KEY_FLG_KEY_32BYTES);
3744 ieee80211_get_key_rx_seq(keyconf, 0, &seq);
3745 pn = seq.aes_cmac.pn;
3746 igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) |
3747 ((u64) pn[4] << 8) |
3748 ((u64) pn[3] << 16) |
3749 ((u64) pn[2] << 24) |
3750 ((u64) pn[1] << 32) |
3751 ((u64) pn[0] << 40));
3752 }
3753
3754 IWL_DEBUG_INFO(mvm, "%s %sIGTK (%d) for sta %u\n",
3755 remove_key ? "removing" : "installing",
3756 keyconf->keyidx >= 6 ? "B" : "",
3757 keyconf->keyidx, igtk_cmd.sta_id);
3758
3759 if (!iwl_mvm_has_new_rx_api(mvm)) {
3760 struct iwl_mvm_mgmt_mcast_key_cmd_v1 igtk_cmd_v1 = {
3761 .ctrl_flags = igtk_cmd.ctrl_flags,
3762 .key_id = igtk_cmd.key_id,
3763 .sta_id = igtk_cmd.sta_id,
3764 .receive_seq_cnt = igtk_cmd.receive_seq_cnt
3765 };
3766
3767 memcpy(igtk_cmd_v1.igtk, igtk_cmd.igtk,
3768 ARRAY_SIZE(igtk_cmd_v1.igtk));
3769 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0,
3770 sizeof(igtk_cmd_v1), &igtk_cmd_v1);
3771 }
3772 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0,
3773 sizeof(igtk_cmd), &igtk_cmd);
3774 }
3775
3776
iwl_mvm_get_mac_addr(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * sta)3777 static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm,
3778 struct ieee80211_vif *vif,
3779 struct ieee80211_sta *sta)
3780 {
3781 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3782
3783 if (sta)
3784 return sta->addr;
3785
3786 if (vif->type == NL80211_IFTYPE_STATION &&
3787 mvmvif->deflink.ap_sta_id != IWL_INVALID_STA) {
3788 u8 sta_id = mvmvif->deflink.ap_sta_id;
3789 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
3790 lockdep_is_held(&mvm->mutex));
3791 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
3792 return NULL;
3793
3794 return sta->addr;
3795 }
3796
3797
3798 return NULL;
3799 }
3800
__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)3801 static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm,
3802 struct ieee80211_vif *vif,
3803 struct ieee80211_sta *sta,
3804 struct ieee80211_key_conf *keyconf,
3805 u8 key_offset,
3806 bool mcast)
3807 {
3808 const u8 *addr;
3809 struct ieee80211_key_seq seq;
3810 u16 p1k[5];
3811 u32 sta_id;
3812 bool mfp = false;
3813
3814 if (sta) {
3815 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3816
3817 sta_id = mvm_sta->deflink.sta_id;
3818 mfp = sta->mfp;
3819 } else if (vif->type == NL80211_IFTYPE_AP &&
3820 !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
3821 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3822
3823 sta_id = mvmvif->deflink.mcast_sta.sta_id;
3824 } else {
3825 IWL_ERR(mvm, "Failed to find station id\n");
3826 return -EINVAL;
3827 }
3828
3829 if (keyconf->cipher == WLAN_CIPHER_SUITE_TKIP) {
3830 addr = iwl_mvm_get_mac_addr(mvm, vif, sta);
3831 if (!addr) {
3832 IWL_ERR(mvm, "Failed to find mac address\n");
3833 return -EINVAL;
3834 }
3835
3836 /* get phase 1 key from mac80211 */
3837 ieee80211_get_key_rx_seq(keyconf, 0, &seq);
3838 ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k);
3839
3840 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast,
3841 seq.tkip.iv32, p1k, 0, key_offset,
3842 mfp);
3843 }
3844
3845 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast,
3846 0, NULL, 0, key_offset, mfp);
3847 }
3848
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)3849 int iwl_mvm_set_sta_key(struct iwl_mvm *mvm,
3850 struct ieee80211_vif *vif,
3851 struct ieee80211_sta *sta,
3852 struct ieee80211_key_conf *keyconf,
3853 u8 key_offset)
3854 {
3855 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
3856 struct iwl_mvm_sta *mvm_sta;
3857 u8 sta_id = IWL_INVALID_STA;
3858 int ret;
3859 static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0};
3860
3861 lockdep_assert_held(&mvm->mutex);
3862
3863 if (vif->type != NL80211_IFTYPE_AP ||
3864 keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
3865 /* Get the station id from the mvm local station table */
3866 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta);
3867 if (!mvm_sta) {
3868 IWL_ERR(mvm, "Failed to find station\n");
3869 return -EINVAL;
3870 }
3871 sta_id = mvm_sta->deflink.sta_id;
3872
3873 /*
3874 * It is possible that the 'sta' parameter is NULL, and thus
3875 * there is a need to retrieve the sta from the local station
3876 * table.
3877 */
3878 if (!sta) {
3879 sta = rcu_dereference_protected(
3880 mvm->fw_id_to_mac_id[sta_id],
3881 lockdep_is_held(&mvm->mutex));
3882 if (IS_ERR_OR_NULL(sta)) {
3883 IWL_ERR(mvm, "Invalid station id\n");
3884 return -EINVAL;
3885 }
3886 }
3887
3888 if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif))
3889 return -EINVAL;
3890 } else {
3891 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3892
3893 sta_id = mvmvif->deflink.mcast_sta.sta_id;
3894 }
3895
3896 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
3897 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
3898 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) {
3899 ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false);
3900 goto end;
3901 }
3902
3903 /* If the key_offset is not pre-assigned, we need to find a
3904 * new offset to use. In normal cases, the offset is not
3905 * pre-assigned, but during HW_RESTART we want to reuse the
3906 * same indices, so we pass them when this function is called.
3907 *
3908 * In D3 entry, we need to hardcoded the indices (because the
3909 * firmware hardcodes the PTK offset to 0). In this case, we
3910 * need to make sure we don't overwrite the hw_key_idx in the
3911 * keyconf structure, because otherwise we cannot configure
3912 * the original ones back when resuming.
3913 */
3914 if (key_offset == STA_KEY_IDX_INVALID) {
3915 key_offset = iwl_mvm_set_fw_key_idx(mvm);
3916 if (key_offset == STA_KEY_IDX_INVALID)
3917 return -ENOSPC;
3918 keyconf->hw_key_idx = key_offset;
3919 }
3920
3921 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast);
3922 if (ret)
3923 goto end;
3924
3925 /*
3926 * For WEP, the same key is used for multicast and unicast. Upload it
3927 * again, using the same key offset, and now pointing the other one
3928 * to the same key slot (offset).
3929 * If this fails, remove the original as well.
3930 */
3931 if ((keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 ||
3932 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) &&
3933 sta) {
3934 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf,
3935 key_offset, !mcast);
3936 if (ret) {
3937 __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast);
3938 goto end;
3939 }
3940 }
3941
3942 __set_bit(key_offset, mvm->fw_key_table);
3943
3944 end:
3945 IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n",
3946 keyconf->cipher, keyconf->keylen, keyconf->keyidx,
3947 sta ? sta->addr : zero_addr, ret);
3948 return ret;
3949 }
3950
iwl_mvm_remove_sta_key(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * keyconf)3951 int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm,
3952 struct ieee80211_vif *vif,
3953 struct ieee80211_sta *sta,
3954 struct ieee80211_key_conf *keyconf)
3955 {
3956 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
3957 struct iwl_mvm_sta *mvm_sta;
3958 u8 sta_id = IWL_INVALID_STA;
3959 int ret, i;
3960
3961 lockdep_assert_held(&mvm->mutex);
3962
3963 /* Get the station from the mvm local station table */
3964 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta);
3965 if (mvm_sta)
3966 sta_id = mvm_sta->deflink.sta_id;
3967 else if (!sta && vif->type == NL80211_IFTYPE_AP && mcast)
3968 sta_id = iwl_mvm_vif_from_mac80211(vif)->deflink.mcast_sta.sta_id;
3969
3970
3971 IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n",
3972 keyconf->keyidx, sta_id);
3973
3974 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
3975 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
3976 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
3977 return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true);
3978
3979 if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) {
3980 IWL_ERR(mvm, "offset %d not used in fw key table.\n",
3981 keyconf->hw_key_idx);
3982 return -ENOENT;
3983 }
3984
3985 /* track which key was deleted last */
3986 for (i = 0; i < STA_KEY_MAX_NUM; i++) {
3987 if (mvm->fw_key_deleted[i] < U8_MAX)
3988 mvm->fw_key_deleted[i]++;
3989 }
3990 mvm->fw_key_deleted[keyconf->hw_key_idx] = 0;
3991
3992 if (sta && !mvm_sta) {
3993 IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n");
3994 return 0;
3995 }
3996
3997 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast);
3998 if (ret)
3999 return ret;
4000
4001 /* delete WEP key twice to get rid of (now useless) offset */
4002 if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 ||
4003 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104)
4004 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast);
4005
4006 return ret;
4007 }
4008
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)4009 void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm,
4010 struct ieee80211_vif *vif,
4011 struct ieee80211_key_conf *keyconf,
4012 struct ieee80211_sta *sta, u32 iv32,
4013 u16 *phase1key)
4014 {
4015 struct iwl_mvm_sta *mvm_sta;
4016 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
4017 bool mfp = sta ? sta->mfp : false;
4018
4019 rcu_read_lock();
4020
4021 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta);
4022 if (WARN_ON_ONCE(!mvm_sta))
4023 goto unlock;
4024 iwl_mvm_send_sta_key(mvm, mvm_sta->deflink.sta_id, keyconf, mcast,
4025 iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx,
4026 mfp);
4027
4028 unlock:
4029 rcu_read_unlock();
4030 }
4031
iwl_mvm_sta_modify_ps_wake(struct iwl_mvm * mvm,struct ieee80211_sta * sta)4032 void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm,
4033 struct ieee80211_sta *sta)
4034 {
4035 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
4036 struct iwl_mvm_add_sta_cmd cmd = {
4037 .add_modify = STA_MODE_MODIFY,
4038 .sta_id = mvmsta->deflink.sta_id,
4039 .station_flags_msk = cpu_to_le32(STA_FLG_PS),
4040 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
4041 };
4042 int ret;
4043
4044 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
4045 iwl_mvm_add_sta_cmd_size(mvm), &cmd);
4046 if (ret)
4047 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
4048 }
4049
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)4050 void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm,
4051 struct ieee80211_sta *sta,
4052 enum ieee80211_frame_release_type reason,
4053 u16 cnt, u16 tids, bool more_data,
4054 bool single_sta_queue)
4055 {
4056 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
4057 struct iwl_mvm_add_sta_cmd cmd = {
4058 .add_modify = STA_MODE_MODIFY,
4059 .sta_id = mvmsta->deflink.sta_id,
4060 .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT,
4061 .sleep_tx_count = cpu_to_le16(cnt),
4062 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
4063 };
4064 int tid, ret;
4065 unsigned long _tids = tids;
4066
4067 /* convert TIDs to ACs - we don't support TSPEC so that's OK
4068 * Note that this field is reserved and unused by firmware not
4069 * supporting GO uAPSD, so it's safe to always do this.
4070 */
4071 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT)
4072 cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]);
4073
4074 /* If we're releasing frames from aggregation or dqa queues then check
4075 * if all the queues that we're releasing frames from, combined, have:
4076 * - more frames than the service period, in which case more_data
4077 * needs to be set
4078 * - fewer than 'cnt' frames, in which case we need to adjust the
4079 * firmware command (but do that unconditionally)
4080 */
4081 if (single_sta_queue) {
4082 int remaining = cnt;
4083 int sleep_tx_count;
4084
4085 spin_lock_bh(&mvmsta->lock);
4086 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) {
4087 struct iwl_mvm_tid_data *tid_data;
4088 u16 n_queued;
4089
4090 tid_data = &mvmsta->tid_data[tid];
4091
4092 n_queued = iwl_mvm_tid_queued(mvm, tid_data);
4093 if (n_queued > remaining) {
4094 more_data = true;
4095 remaining = 0;
4096 break;
4097 }
4098 remaining -= n_queued;
4099 }
4100 sleep_tx_count = cnt - remaining;
4101 if (reason == IEEE80211_FRAME_RELEASE_UAPSD)
4102 mvmsta->sleep_tx_count = sleep_tx_count;
4103 spin_unlock_bh(&mvmsta->lock);
4104
4105 cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count);
4106 if (WARN_ON(cnt - remaining == 0)) {
4107 ieee80211_sta_eosp(sta);
4108 return;
4109 }
4110 }
4111
4112 /* Note: this is ignored by firmware not supporting GO uAPSD */
4113 if (more_data)
4114 cmd.sleep_state_flags |= STA_SLEEP_STATE_MOREDATA;
4115
4116 if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) {
4117 mvmsta->next_status_eosp = true;
4118 cmd.sleep_state_flags |= STA_SLEEP_STATE_PS_POLL;
4119 } else {
4120 cmd.sleep_state_flags |= STA_SLEEP_STATE_UAPSD;
4121 }
4122
4123 /* block the Tx queues until the FW updated the sleep Tx count */
4124 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA,
4125 CMD_ASYNC | CMD_BLOCK_TXQS,
4126 iwl_mvm_add_sta_cmd_size(mvm), &cmd);
4127 if (ret)
4128 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
4129 }
4130
iwl_mvm_rx_eosp_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)4131 void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm,
4132 struct iwl_rx_cmd_buffer *rxb)
4133 {
4134 struct iwl_rx_packet *pkt = rxb_addr(rxb);
4135 struct iwl_mvm_eosp_notification *notif = (void *)pkt->data;
4136 struct ieee80211_sta *sta;
4137 u32 sta_id = le32_to_cpu(notif->sta_id);
4138
4139 if (WARN_ON_ONCE(sta_id >= mvm->fw->ucode_capa.num_stations))
4140 return;
4141
4142 rcu_read_lock();
4143 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
4144 if (!IS_ERR_OR_NULL(sta))
4145 ieee80211_sta_eosp(sta);
4146 rcu_read_unlock();
4147 }
4148
iwl_mvm_sta_modify_disable_tx(struct iwl_mvm * mvm,struct iwl_mvm_sta * mvmsta,bool disable)4149 void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm,
4150 struct iwl_mvm_sta *mvmsta,
4151 bool disable)
4152 {
4153 struct iwl_mvm_add_sta_cmd cmd = {
4154 .add_modify = STA_MODE_MODIFY,
4155 .sta_id = mvmsta->deflink.sta_id,
4156 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0,
4157 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX),
4158 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
4159 };
4160 int ret;
4161
4162 if (mvm->mld_api_is_used) {
4163 if (!iwl_mvm_has_no_host_disable_tx(mvm))
4164 iwl_mvm_mld_sta_modify_disable_tx(mvm, mvmsta, disable);
4165 return;
4166 }
4167
4168 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
4169 iwl_mvm_add_sta_cmd_size(mvm), &cmd);
4170 if (ret)
4171 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
4172 }
4173
iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm * mvm,struct ieee80211_sta * sta,bool disable)4174 void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm,
4175 struct ieee80211_sta *sta,
4176 bool disable)
4177 {
4178 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
4179
4180 if (mvm->mld_api_is_used) {
4181 if (!iwl_mvm_has_no_host_disable_tx(mvm))
4182 iwl_mvm_mld_sta_modify_disable_tx_ap(mvm, sta, disable);
4183 return;
4184 }
4185
4186 spin_lock_bh(&mvm_sta->lock);
4187
4188 if (mvm_sta->disable_tx == disable) {
4189 spin_unlock_bh(&mvm_sta->lock);
4190 return;
4191 }
4192
4193 mvm_sta->disable_tx = disable;
4194
4195 /*
4196 * If sta PS state is handled by mac80211, tell it to start/stop
4197 * queuing tx for this station.
4198 */
4199 if (!ieee80211_hw_check(mvm->hw, AP_LINK_PS))
4200 ieee80211_sta_block_awake(mvm->hw, sta, disable);
4201
4202 iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable);
4203
4204 spin_unlock_bh(&mvm_sta->lock);
4205 }
4206
iwl_mvm_int_sta_modify_disable_tx(struct iwl_mvm * mvm,struct iwl_mvm_vif * mvmvif,struct iwl_mvm_int_sta * sta,bool disable)4207 static void iwl_mvm_int_sta_modify_disable_tx(struct iwl_mvm *mvm,
4208 struct iwl_mvm_vif *mvmvif,
4209 struct iwl_mvm_int_sta *sta,
4210 bool disable)
4211 {
4212 u32 id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color);
4213 struct iwl_mvm_add_sta_cmd cmd = {
4214 .add_modify = STA_MODE_MODIFY,
4215 .sta_id = sta->sta_id,
4216 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0,
4217 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX),
4218 .mac_id_n_color = cpu_to_le32(id),
4219 };
4220 int ret;
4221
4222 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
4223 iwl_mvm_add_sta_cmd_size(mvm), &cmd);
4224 if (ret)
4225 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
4226 }
4227
iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm * mvm,struct iwl_mvm_vif * mvmvif,bool disable)4228 void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm,
4229 struct iwl_mvm_vif *mvmvif,
4230 bool disable)
4231 {
4232 struct ieee80211_sta *sta;
4233 struct iwl_mvm_sta *mvm_sta;
4234 int i;
4235
4236 if (mvm->mld_api_is_used) {
4237 if (!iwl_mvm_has_no_host_disable_tx(mvm))
4238 iwl_mvm_mld_modify_all_sta_disable_tx(mvm, mvmvif,
4239 disable);
4240 return;
4241 }
4242
4243 rcu_read_lock();
4244
4245 /* Block/unblock all the stations of the given mvmvif */
4246 for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) {
4247 sta = rcu_dereference(mvm->fw_id_to_mac_id[i]);
4248 if (IS_ERR_OR_NULL(sta))
4249 continue;
4250
4251 mvm_sta = iwl_mvm_sta_from_mac80211(sta);
4252 if (mvm_sta->mac_id_n_color !=
4253 FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color))
4254 continue;
4255
4256 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable);
4257 }
4258
4259 rcu_read_unlock();
4260
4261 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
4262 return;
4263
4264 /* Need to block/unblock also multicast station */
4265 if (mvmvif->deflink.mcast_sta.sta_id != IWL_INVALID_STA)
4266 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif,
4267 &mvmvif->deflink.mcast_sta,
4268 disable);
4269
4270 /*
4271 * Only unblock the broadcast station (FW blocks it for immediate
4272 * quiet, not the driver)
4273 */
4274 if (!disable && mvmvif->deflink.bcast_sta.sta_id != IWL_INVALID_STA)
4275 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif,
4276 &mvmvif->deflink.bcast_sta,
4277 disable);
4278 }
4279
iwl_mvm_csa_client_absent(struct iwl_mvm * mvm,struct ieee80211_vif * vif)4280 void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
4281 {
4282 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4283 struct iwl_mvm_sta *mvmsta;
4284
4285 rcu_read_lock();
4286
4287 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->deflink.ap_sta_id);
4288
4289 if (mvmsta)
4290 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true);
4291
4292 rcu_read_unlock();
4293 }
4294
iwl_mvm_tid_queued(struct iwl_mvm * mvm,struct iwl_mvm_tid_data * tid_data)4295 u16 iwl_mvm_tid_queued(struct iwl_mvm *mvm, struct iwl_mvm_tid_data *tid_data)
4296 {
4297 u16 sn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
4298
4299 /*
4300 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need
4301 * to align the wrap around of ssn so we compare relevant values.
4302 */
4303 if (mvm->trans->mac_cfg->gen2)
4304 sn &= 0xff;
4305
4306 return ieee80211_sn_sub(sn, tid_data->next_reclaimed);
4307 }
4308
iwl_mvm_cancel_channel_switch(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u32 id)4309 void iwl_mvm_cancel_channel_switch(struct iwl_mvm *mvm,
4310 struct ieee80211_vif *vif,
4311 u32 id)
4312 {
4313 struct iwl_cancel_channel_switch_cmd cancel_channel_switch_cmd = {
4314 .id = cpu_to_le32(id),
4315 };
4316 int ret;
4317
4318 ret = iwl_mvm_send_cmd_pdu(mvm,
4319 WIDE_ID(MAC_CONF_GROUP, CANCEL_CHANNEL_SWITCH_CMD),
4320 CMD_ASYNC,
4321 sizeof(cancel_channel_switch_cmd),
4322 &cancel_channel_switch_cmd);
4323 if (ret)
4324 IWL_ERR(mvm, "Failed to cancel the channel switch\n");
4325 }
4326