1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /*
3 * Copyright (C) 2012-2015, 2018-2023 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_MVM_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_MVM_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->chandef.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.chandef.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 from_timer(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->trans_cfg->base_params->num_of_queues,
798 "max queue %d >= num_of_queues (%d)", maxq,
799 mvm->trans->trans_cfg->base_params->num_of_queues))
800 maxq = mvm->trans->trans_cfg->base_params->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 1k 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->cfg->min_txq_size);
859 } else {
860 size = iwl_mvm_get_queue_size(sta);
861 }
862
863 /* take the min with bc tbl entries allowed */
864 size = min_t(u32, size, mvm->trans->txqs.bc_tbl_size / sizeof(u16));
865
866 /* size needs to be power of 2 values for calculating read/write pointers */
867 size = rounddown_pow_of_two(size);
868
869 if (sta) {
870 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
871 unsigned int link_id;
872
873 for (link_id = 0;
874 link_id < ARRAY_SIZE(mvmsta->link);
875 link_id++) {
876 struct iwl_mvm_link_sta *link =
877 rcu_dereference_protected(mvmsta->link[link_id],
878 lockdep_is_held(&mvm->mutex));
879
880 if (!link)
881 continue;
882
883 sta_mask |= BIT(link->sta_id);
884 }
885 } else {
886 sta_mask |= BIT(sta_id);
887 }
888
889 if (!sta_mask)
890 return -EINVAL;
891
892 do {
893 queue = iwl_trans_txq_alloc(mvm->trans, 0, sta_mask,
894 tid, size, timeout);
895
896 if (queue < 0)
897 IWL_DEBUG_TX_QUEUES(mvm,
898 "Failed allocating TXQ of size %d for sta mask %x tid %d, ret: %d\n",
899 size, sta_mask, tid, queue);
900 size /= 2;
901 } while (queue < 0 && size >= 16);
902
903 if (queue < 0)
904 return queue;
905
906 IWL_DEBUG_TX_QUEUES(mvm, "Enabling TXQ #%d for sta mask 0x%x tid %d\n",
907 queue, sta_mask, tid);
908
909 return queue;
910 }
911
iwl_mvm_sta_alloc_queue_tvqm(struct iwl_mvm * mvm,struct ieee80211_sta * sta,u8 ac,int tid)912 static int iwl_mvm_sta_alloc_queue_tvqm(struct iwl_mvm *mvm,
913 struct ieee80211_sta *sta, u8 ac,
914 int tid)
915 {
916 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
917 struct iwl_mvm_txq *mvmtxq =
918 iwl_mvm_txq_from_tid(sta, tid);
919 unsigned int wdg_timeout =
920 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false);
921 int queue = -1;
922
923 lockdep_assert_held(&mvm->mutex);
924
925 IWL_DEBUG_TX_QUEUES(mvm,
926 "Allocating queue for sta %d on tid %d\n",
927 mvmsta->deflink.sta_id, tid);
928 queue = iwl_mvm_tvqm_enable_txq(mvm, sta, mvmsta->deflink.sta_id,
929 tid, wdg_timeout);
930 if (queue < 0)
931 return queue;
932
933 mvmtxq->txq_id = queue;
934 mvm->tvqm_info[queue].txq_tid = tid;
935 mvm->tvqm_info[queue].sta_id = mvmsta->deflink.sta_id;
936
937 IWL_DEBUG_TX_QUEUES(mvm, "Allocated queue is %d\n", queue);
938
939 spin_lock_bh(&mvmsta->lock);
940 mvmsta->tid_data[tid].txq_id = queue;
941 spin_unlock_bh(&mvmsta->lock);
942
943 return 0;
944 }
945
iwl_mvm_update_txq_mapping(struct iwl_mvm * mvm,struct ieee80211_sta * sta,int queue,u8 sta_id,u8 tid)946 static bool iwl_mvm_update_txq_mapping(struct iwl_mvm *mvm,
947 struct ieee80211_sta *sta,
948 int queue, u8 sta_id, u8 tid)
949 {
950 bool enable_queue = true;
951
952 /* Make sure this TID isn't already enabled */
953 if (mvm->queue_info[queue].tid_bitmap & BIT(tid)) {
954 IWL_ERR(mvm, "Trying to enable TXQ %d with existing TID %d\n",
955 queue, tid);
956 return false;
957 }
958
959 /* Update mappings and refcounts */
960 if (mvm->queue_info[queue].tid_bitmap)
961 enable_queue = false;
962
963 mvm->queue_info[queue].tid_bitmap |= BIT(tid);
964 mvm->queue_info[queue].ra_sta_id = sta_id;
965
966 if (enable_queue) {
967 if (tid != IWL_MAX_TID_COUNT)
968 mvm->queue_info[queue].mac80211_ac =
969 tid_to_mac80211_ac[tid];
970 else
971 mvm->queue_info[queue].mac80211_ac = IEEE80211_AC_VO;
972
973 mvm->queue_info[queue].txq_tid = tid;
974 }
975
976 if (sta) {
977 struct iwl_mvm_txq *mvmtxq =
978 iwl_mvm_txq_from_tid(sta, tid);
979
980 mvmtxq->txq_id = queue;
981 }
982
983 IWL_DEBUG_TX_QUEUES(mvm,
984 "Enabling TXQ #%d tids=0x%x\n",
985 queue, mvm->queue_info[queue].tid_bitmap);
986
987 return enable_queue;
988 }
989
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)990 static bool iwl_mvm_enable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
991 int queue, u16 ssn,
992 const struct iwl_trans_txq_scd_cfg *cfg,
993 unsigned int wdg_timeout)
994 {
995 struct iwl_scd_txq_cfg_cmd cmd = {
996 .scd_queue = queue,
997 .action = SCD_CFG_ENABLE_QUEUE,
998 .window = cfg->frame_limit,
999 .sta_id = cfg->sta_id,
1000 .ssn = cpu_to_le16(ssn),
1001 .tx_fifo = cfg->fifo,
1002 .aggregate = cfg->aggregate,
1003 .tid = cfg->tid,
1004 };
1005 bool inc_ssn;
1006
1007 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
1008 return false;
1009
1010 /* Send the enabling command if we need to */
1011 if (!iwl_mvm_update_txq_mapping(mvm, sta, queue, cfg->sta_id, cfg->tid))
1012 return false;
1013
1014 inc_ssn = iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn,
1015 NULL, wdg_timeout);
1016 if (inc_ssn)
1017 le16_add_cpu(&cmd.ssn, 1);
1018
1019 WARN(iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd),
1020 "Failed to configure queue %d on FIFO %d\n", queue, cfg->fifo);
1021
1022 return inc_ssn;
1023 }
1024
iwl_mvm_change_queue_tid(struct iwl_mvm * mvm,int queue)1025 static void iwl_mvm_change_queue_tid(struct iwl_mvm *mvm, int queue)
1026 {
1027 struct iwl_scd_txq_cfg_cmd cmd = {
1028 .scd_queue = queue,
1029 .action = SCD_CFG_UPDATE_QUEUE_TID,
1030 };
1031 int tid;
1032 unsigned long tid_bitmap;
1033 int ret;
1034
1035 lockdep_assert_held(&mvm->mutex);
1036
1037 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
1038 return;
1039
1040 tid_bitmap = mvm->queue_info[queue].tid_bitmap;
1041
1042 if (WARN(!tid_bitmap, "TXQ %d has no tids assigned to it\n", queue))
1043 return;
1044
1045 /* Find any TID for queue */
1046 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1);
1047 cmd.tid = tid;
1048 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]];
1049
1050 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd);
1051 if (ret) {
1052 IWL_ERR(mvm, "Failed to update owner of TXQ %d (ret=%d)\n",
1053 queue, ret);
1054 return;
1055 }
1056
1057 mvm->queue_info[queue].txq_tid = tid;
1058 IWL_DEBUG_TX_QUEUES(mvm, "Changed TXQ %d ownership to tid %d\n",
1059 queue, tid);
1060 }
1061
iwl_mvm_unshare_queue(struct iwl_mvm * mvm,int queue)1062 static void iwl_mvm_unshare_queue(struct iwl_mvm *mvm, int queue)
1063 {
1064 struct ieee80211_sta *sta;
1065 struct iwl_mvm_sta *mvmsta;
1066 u8 sta_id;
1067 int tid = -1;
1068 unsigned long tid_bitmap;
1069 unsigned int wdg_timeout;
1070 int ssn;
1071 int ret = true;
1072
1073 /* queue sharing is disabled on new TX path */
1074 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
1075 return;
1076
1077 lockdep_assert_held(&mvm->mutex);
1078
1079 sta_id = mvm->queue_info[queue].ra_sta_id;
1080 tid_bitmap = mvm->queue_info[queue].tid_bitmap;
1081
1082 /* Find TID for queue, and make sure it is the only one on the queue */
1083 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1);
1084 if (tid_bitmap != BIT(tid)) {
1085 IWL_ERR(mvm, "Failed to unshare q %d, active tids=0x%lx\n",
1086 queue, tid_bitmap);
1087 return;
1088 }
1089
1090 IWL_DEBUG_TX_QUEUES(mvm, "Unsharing TXQ %d, keeping tid %d\n", queue,
1091 tid);
1092
1093 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1094 lockdep_is_held(&mvm->mutex));
1095
1096 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
1097 return;
1098
1099 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1100 wdg_timeout = iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false);
1101
1102 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number);
1103
1104 ret = iwl_mvm_redirect_queue(mvm, queue, tid,
1105 tid_to_mac80211_ac[tid], ssn,
1106 wdg_timeout, true,
1107 iwl_mvm_txq_from_tid(sta, tid));
1108 if (ret) {
1109 IWL_ERR(mvm, "Failed to redirect TXQ %d\n", queue);
1110 return;
1111 }
1112
1113 /* If aggs should be turned back on - do it */
1114 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) {
1115 struct iwl_mvm_add_sta_cmd cmd = {0};
1116
1117 mvmsta->tid_disable_agg &= ~BIT(tid);
1118
1119 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color);
1120 cmd.sta_id = mvmsta->deflink.sta_id;
1121 cmd.add_modify = STA_MODE_MODIFY;
1122 cmd.modify_mask = STA_MODIFY_TID_DISABLE_TX;
1123 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk);
1124 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg);
1125
1126 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
1127 iwl_mvm_add_sta_cmd_size(mvm), &cmd);
1128 if (!ret) {
1129 IWL_DEBUG_TX_QUEUES(mvm,
1130 "TXQ #%d is now aggregated again\n",
1131 queue);
1132
1133 /* Mark queue intenally as aggregating again */
1134 iwl_trans_txq_set_shared_mode(mvm->trans, queue, false);
1135 }
1136 }
1137
1138 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY;
1139 }
1140
1141 /*
1142 * Remove inactive TIDs of a given queue.
1143 * If all queue TIDs are inactive - mark the queue as inactive
1144 * If only some the queue TIDs are inactive - unmap them from the queue
1145 *
1146 * Returns %true if all TIDs were removed and the queue could be reused.
1147 */
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)1148 static bool iwl_mvm_remove_inactive_tids(struct iwl_mvm *mvm,
1149 struct iwl_mvm_sta *mvmsta, int queue,
1150 unsigned long tid_bitmap,
1151 unsigned long *unshare_queues,
1152 unsigned long *changetid_queues)
1153 {
1154 unsigned int tid;
1155
1156 lockdep_assert_held(&mvmsta->lock);
1157 lockdep_assert_held(&mvm->mutex);
1158
1159 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
1160 return false;
1161
1162 /* Go over all non-active TIDs, incl. IWL_MAX_TID_COUNT (for mgmt) */
1163 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
1164 /* If some TFDs are still queued - don't mark TID as inactive */
1165 if (iwl_mvm_tid_queued(mvm, &mvmsta->tid_data[tid]))
1166 tid_bitmap &= ~BIT(tid);
1167
1168 /* Don't mark as inactive any TID that has an active BA */
1169 if (mvmsta->tid_data[tid].state != IWL_AGG_OFF)
1170 tid_bitmap &= ~BIT(tid);
1171 }
1172
1173 /* If all TIDs in the queue are inactive - return it can be reused */
1174 if (tid_bitmap == mvm->queue_info[queue].tid_bitmap) {
1175 IWL_DEBUG_TX_QUEUES(mvm, "Queue %d is inactive\n", queue);
1176 return true;
1177 }
1178
1179 /*
1180 * If we are here, this is a shared queue and not all TIDs timed-out.
1181 * Remove the ones that did.
1182 */
1183 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
1184 u16 q_tid_bitmap;
1185
1186 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE;
1187 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid);
1188
1189 q_tid_bitmap = mvm->queue_info[queue].tid_bitmap;
1190
1191 /*
1192 * We need to take into account a situation in which a TXQ was
1193 * allocated to TID x, and then turned shared by adding TIDs y
1194 * and z. If TID x becomes inactive and is removed from the TXQ,
1195 * ownership must be given to one of the remaining TIDs.
1196 * This is mainly because if TID x continues - a new queue can't
1197 * be allocated for it as long as it is an owner of another TXQ.
1198 *
1199 * Mark this queue in the right bitmap, we'll send the command
1200 * to the firmware later.
1201 */
1202 if (!(q_tid_bitmap & BIT(mvm->queue_info[queue].txq_tid)))
1203 set_bit(queue, changetid_queues);
1204
1205 IWL_DEBUG_TX_QUEUES(mvm,
1206 "Removing inactive TID %d from shared Q:%d\n",
1207 tid, queue);
1208 }
1209
1210 IWL_DEBUG_TX_QUEUES(mvm,
1211 "TXQ #%d left with tid bitmap 0x%x\n", queue,
1212 mvm->queue_info[queue].tid_bitmap);
1213
1214 /*
1215 * There may be different TIDs with the same mac queues, so make
1216 * sure all TIDs have existing corresponding mac queues enabled
1217 */
1218 tid_bitmap = mvm->queue_info[queue].tid_bitmap;
1219
1220 /* If the queue is marked as shared - "unshare" it */
1221 if (hweight16(mvm->queue_info[queue].tid_bitmap) == 1 &&
1222 mvm->queue_info[queue].status == IWL_MVM_QUEUE_SHARED) {
1223 IWL_DEBUG_TX_QUEUES(mvm, "Marking Q:%d for reconfig\n",
1224 queue);
1225 set_bit(queue, unshare_queues);
1226 }
1227
1228 return false;
1229 }
1230
1231 /*
1232 * Check for inactivity - this includes checking if any queue
1233 * can be unshared and finding one (and only one) that can be
1234 * reused.
1235 * This function is also invoked as a sort of clean-up task,
1236 * in which case @alloc_for_sta is IWL_MVM_INVALID_STA.
1237 *
1238 * Returns the queue number, or -ENOSPC.
1239 */
iwl_mvm_inactivity_check(struct iwl_mvm * mvm,u8 alloc_for_sta)1240 static int iwl_mvm_inactivity_check(struct iwl_mvm *mvm, u8 alloc_for_sta)
1241 {
1242 unsigned long now = jiffies;
1243 unsigned long unshare_queues = 0;
1244 unsigned long changetid_queues = 0;
1245 int i, ret, free_queue = -ENOSPC;
1246 struct ieee80211_sta *queue_owner = NULL;
1247
1248 lockdep_assert_held(&mvm->mutex);
1249
1250 if (iwl_mvm_has_new_tx_api(mvm))
1251 return -ENOSPC;
1252
1253 rcu_read_lock();
1254
1255 /* we skip the CMD queue below by starting at 1 */
1256 BUILD_BUG_ON(IWL_MVM_DQA_CMD_QUEUE != 0);
1257
1258 for (i = 1; i < IWL_MAX_HW_QUEUES; i++) {
1259 struct ieee80211_sta *sta;
1260 struct iwl_mvm_sta *mvmsta;
1261 u8 sta_id;
1262 int tid;
1263 unsigned long inactive_tid_bitmap = 0;
1264 unsigned long queue_tid_bitmap;
1265
1266 queue_tid_bitmap = mvm->queue_info[i].tid_bitmap;
1267 if (!queue_tid_bitmap)
1268 continue;
1269
1270 /* If TXQ isn't in active use anyway - nothing to do here... */
1271 if (mvm->queue_info[i].status != IWL_MVM_QUEUE_READY &&
1272 mvm->queue_info[i].status != IWL_MVM_QUEUE_SHARED)
1273 continue;
1274
1275 /* Check to see if there are inactive TIDs on this queue */
1276 for_each_set_bit(tid, &queue_tid_bitmap,
1277 IWL_MAX_TID_COUNT + 1) {
1278 if (time_after(mvm->queue_info[i].last_frame_time[tid] +
1279 IWL_MVM_DQA_QUEUE_TIMEOUT, now))
1280 continue;
1281
1282 inactive_tid_bitmap |= BIT(tid);
1283 }
1284
1285 /* If all TIDs are active - finish check on this queue */
1286 if (!inactive_tid_bitmap)
1287 continue;
1288
1289 /*
1290 * If we are here - the queue hadn't been served recently and is
1291 * in use
1292 */
1293
1294 sta_id = mvm->queue_info[i].ra_sta_id;
1295 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
1296
1297 /*
1298 * If the STA doesn't exist anymore, it isn't an error. It could
1299 * be that it was removed since getting the queues, and in this
1300 * case it should've inactivated its queues anyway.
1301 */
1302 if (IS_ERR_OR_NULL(sta))
1303 continue;
1304
1305 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1306
1307 spin_lock_bh(&mvmsta->lock);
1308 ret = iwl_mvm_remove_inactive_tids(mvm, mvmsta, i,
1309 inactive_tid_bitmap,
1310 &unshare_queues,
1311 &changetid_queues);
1312 if (ret && free_queue < 0) {
1313 queue_owner = sta;
1314 free_queue = i;
1315 }
1316 /* only unlock sta lock - we still need the queue info lock */
1317 spin_unlock_bh(&mvmsta->lock);
1318 }
1319
1320
1321 /* Reconfigure queues requiring reconfiguation */
1322 for_each_set_bit(i, &unshare_queues, IWL_MAX_HW_QUEUES)
1323 iwl_mvm_unshare_queue(mvm, i);
1324 for_each_set_bit(i, &changetid_queues, IWL_MAX_HW_QUEUES)
1325 iwl_mvm_change_queue_tid(mvm, i);
1326
1327 rcu_read_unlock();
1328
1329 if (free_queue >= 0 && alloc_for_sta != IWL_MVM_INVALID_STA) {
1330 ret = iwl_mvm_free_inactive_queue(mvm, free_queue, queue_owner,
1331 alloc_for_sta);
1332 if (ret)
1333 return ret;
1334 }
1335
1336 return free_queue;
1337 }
1338
iwl_mvm_sta_alloc_queue(struct iwl_mvm * mvm,struct ieee80211_sta * sta,u8 ac,int tid)1339 static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm,
1340 struct ieee80211_sta *sta, u8 ac, int tid)
1341 {
1342 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1343 struct iwl_trans_txq_scd_cfg cfg = {
1344 .fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac),
1345 .sta_id = mvmsta->deflink.sta_id,
1346 .tid = tid,
1347 .frame_limit = IWL_FRAME_LIMIT,
1348 };
1349 unsigned int wdg_timeout =
1350 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false);
1351 int queue = -1;
1352 u16 queue_tmp;
1353 unsigned long disable_agg_tids = 0;
1354 enum iwl_mvm_agg_state queue_state;
1355 bool shared_queue = false, inc_ssn;
1356 int ssn;
1357 unsigned long tfd_queue_mask;
1358 int ret;
1359
1360 lockdep_assert_held(&mvm->mutex);
1361
1362 if (iwl_mvm_has_new_tx_api(mvm))
1363 return iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid);
1364
1365 spin_lock_bh(&mvmsta->lock);
1366 tfd_queue_mask = mvmsta->tfd_queue_msk;
1367 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number);
1368 spin_unlock_bh(&mvmsta->lock);
1369
1370 if (tid == IWL_MAX_TID_COUNT) {
1371 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id,
1372 IWL_MVM_DQA_MIN_MGMT_QUEUE,
1373 IWL_MVM_DQA_MAX_MGMT_QUEUE);
1374 if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE)
1375 IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n",
1376 queue);
1377
1378 /* If no such queue is found, we'll use a DATA queue instead */
1379 }
1380
1381 if ((queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) &&
1382 (mvm->queue_info[mvmsta->reserved_queue].status ==
1383 IWL_MVM_QUEUE_RESERVED)) {
1384 queue = mvmsta->reserved_queue;
1385 mvm->queue_info[queue].reserved = true;
1386 IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue);
1387 }
1388
1389 if (queue < 0)
1390 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id,
1391 IWL_MVM_DQA_MIN_DATA_QUEUE,
1392 IWL_MVM_DQA_MAX_DATA_QUEUE);
1393 if (queue < 0) {
1394 /* try harder - perhaps kill an inactive queue */
1395 queue = iwl_mvm_inactivity_check(mvm, mvmsta->deflink.sta_id);
1396 }
1397
1398 /* No free queue - we'll have to share */
1399 if (queue <= 0) {
1400 queue = iwl_mvm_get_shared_queue(mvm, tfd_queue_mask, ac);
1401 if (queue > 0) {
1402 shared_queue = true;
1403 mvm->queue_info[queue].status = IWL_MVM_QUEUE_SHARED;
1404 }
1405 }
1406
1407 /*
1408 * Mark TXQ as ready, even though it hasn't been fully configured yet,
1409 * to make sure no one else takes it.
1410 * This will allow avoiding re-acquiring the lock at the end of the
1411 * configuration. On error we'll mark it back as free.
1412 */
1413 if (queue > 0 && !shared_queue)
1414 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY;
1415
1416 /* This shouldn't happen - out of queues */
1417 if (WARN_ON(queue <= 0)) {
1418 IWL_ERR(mvm, "No available queues for tid %d on sta_id %d\n",
1419 tid, cfg.sta_id);
1420 return queue;
1421 }
1422
1423 /*
1424 * Actual en/disablement of aggregations is through the ADD_STA HCMD,
1425 * but for configuring the SCD to send A-MPDUs we need to mark the queue
1426 * as aggregatable.
1427 * Mark all DATA queues as allowing to be aggregated at some point
1428 */
1429 cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE ||
1430 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE);
1431
1432 IWL_DEBUG_TX_QUEUES(mvm,
1433 "Allocating %squeue #%d to sta %d on tid %d\n",
1434 shared_queue ? "shared " : "", queue,
1435 mvmsta->deflink.sta_id, tid);
1436
1437 if (shared_queue) {
1438 /* Disable any open aggs on this queue */
1439 disable_agg_tids = iwl_mvm_get_queue_agg_tids(mvm, queue);
1440
1441 if (disable_agg_tids) {
1442 IWL_DEBUG_TX_QUEUES(mvm, "Disabling aggs on queue %d\n",
1443 queue);
1444 iwl_mvm_invalidate_sta_queue(mvm, queue,
1445 disable_agg_tids, false);
1446 }
1447 }
1448
1449 inc_ssn = iwl_mvm_enable_txq(mvm, sta, queue, ssn, &cfg, wdg_timeout);
1450
1451 /*
1452 * Mark queue as shared in transport if shared
1453 * Note this has to be done after queue enablement because enablement
1454 * can also set this value, and there is no indication there to shared
1455 * queues
1456 */
1457 if (shared_queue)
1458 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true);
1459
1460 spin_lock_bh(&mvmsta->lock);
1461 /*
1462 * This looks racy, but it is not. We have only one packet for
1463 * this ra/tid in our Tx path since we stop the Qdisc when we
1464 * need to allocate a new TFD queue.
1465 */
1466 if (inc_ssn) {
1467 mvmsta->tid_data[tid].seq_number += 0x10;
1468 ssn = (ssn + 1) & IEEE80211_SCTL_SEQ;
1469 }
1470 mvmsta->tid_data[tid].txq_id = queue;
1471 mvmsta->tfd_queue_msk |= BIT(queue);
1472 queue_state = mvmsta->tid_data[tid].state;
1473
1474 if (mvmsta->reserved_queue == queue)
1475 mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE;
1476 spin_unlock_bh(&mvmsta->lock);
1477
1478 if (!shared_queue) {
1479 ret = iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES);
1480 if (ret)
1481 goto out_err;
1482
1483 /* If we need to re-enable aggregations... */
1484 if (queue_state == IWL_AGG_ON) {
1485 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);
1486 if (ret)
1487 goto out_err;
1488 }
1489 } else {
1490 /* Redirect queue, if needed */
1491 ret = iwl_mvm_redirect_queue(mvm, queue, tid, ac, ssn,
1492 wdg_timeout, false,
1493 iwl_mvm_txq_from_tid(sta, tid));
1494 if (ret)
1495 goto out_err;
1496 }
1497
1498 return 0;
1499
1500 out_err:
1501 queue_tmp = queue;
1502 iwl_mvm_disable_txq(mvm, sta, mvmsta->deflink.sta_id, &queue_tmp, tid);
1503
1504 return ret;
1505 }
1506
iwl_mvm_add_new_dqa_stream_wk(struct work_struct * wk)1507 void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk)
1508 {
1509 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm,
1510 add_stream_wk);
1511
1512 mutex_lock(&mvm->mutex);
1513
1514 iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA);
1515
1516 while (!list_empty(&mvm->add_stream_txqs)) {
1517 struct iwl_mvm_txq *mvmtxq;
1518 struct ieee80211_txq *txq;
1519 u8 tid;
1520
1521 mvmtxq = list_first_entry(&mvm->add_stream_txqs,
1522 struct iwl_mvm_txq, list);
1523
1524 txq = container_of((void *)mvmtxq, struct ieee80211_txq,
1525 drv_priv);
1526 tid = txq->tid;
1527 if (tid == IEEE80211_NUM_TIDS)
1528 tid = IWL_MAX_TID_COUNT;
1529
1530 /*
1531 * We can't really do much here, but if this fails we can't
1532 * transmit anyway - so just don't transmit the frame etc.
1533 * and let them back up ... we've tried our best to allocate
1534 * a queue in the function itself.
1535 */
1536 if (iwl_mvm_sta_alloc_queue(mvm, txq->sta, txq->ac, tid)) {
1537 spin_lock_bh(&mvm->add_stream_lock);
1538 list_del_init(&mvmtxq->list);
1539 spin_unlock_bh(&mvm->add_stream_lock);
1540 continue;
1541 }
1542
1543 /* now we're ready, any remaining races/concurrency will be
1544 * handled in iwl_mvm_mac_itxq_xmit()
1545 */
1546 set_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state);
1547
1548 local_bh_disable();
1549 spin_lock(&mvm->add_stream_lock);
1550 list_del_init(&mvmtxq->list);
1551 spin_unlock(&mvm->add_stream_lock);
1552
1553 iwl_mvm_mac_itxq_xmit(mvm->hw, txq);
1554 local_bh_enable();
1555 }
1556
1557 mutex_unlock(&mvm->mutex);
1558 }
1559
iwl_mvm_reserve_sta_stream(struct iwl_mvm * mvm,struct ieee80211_sta * sta,enum nl80211_iftype vif_type)1560 static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm,
1561 struct ieee80211_sta *sta,
1562 enum nl80211_iftype vif_type)
1563 {
1564 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1565 int queue;
1566
1567 /* queue reserving is disabled on new TX path */
1568 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
1569 return 0;
1570
1571 /* run the general cleanup/unsharing of queues */
1572 iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA);
1573
1574 /* Make sure we have free resources for this STA */
1575 if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls &&
1576 !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].tid_bitmap &&
1577 (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status ==
1578 IWL_MVM_QUEUE_FREE))
1579 queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE;
1580 else
1581 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id,
1582 IWL_MVM_DQA_MIN_DATA_QUEUE,
1583 IWL_MVM_DQA_MAX_DATA_QUEUE);
1584 if (queue < 0) {
1585 /* try again - this time kick out a queue if needed */
1586 queue = iwl_mvm_inactivity_check(mvm, mvmsta->deflink.sta_id);
1587 if (queue < 0) {
1588 IWL_ERR(mvm, "No available queues for new station\n");
1589 return -ENOSPC;
1590 }
1591 }
1592 mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED;
1593
1594 mvmsta->reserved_queue = queue;
1595
1596 IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n",
1597 queue, mvmsta->deflink.sta_id);
1598
1599 return 0;
1600 }
1601
1602 /*
1603 * In DQA mode, after a HW restart the queues should be allocated as before, in
1604 * order to avoid race conditions when there are shared queues. This function
1605 * does the re-mapping and queue allocation.
1606 *
1607 * Note that re-enabling aggregations isn't done in this function.
1608 */
iwl_mvm_realloc_queues_after_restart(struct iwl_mvm * mvm,struct ieee80211_sta * sta)1609 void iwl_mvm_realloc_queues_after_restart(struct iwl_mvm *mvm,
1610 struct ieee80211_sta *sta)
1611 {
1612 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1613 unsigned int wdg =
1614 iwl_mvm_get_wd_timeout(mvm, mvm_sta->vif, false, false);
1615 int i;
1616 struct iwl_trans_txq_scd_cfg cfg = {
1617 .sta_id = mvm_sta->deflink.sta_id,
1618 .frame_limit = IWL_FRAME_LIMIT,
1619 };
1620
1621 /* Make sure reserved queue is still marked as such (if allocated) */
1622 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE)
1623 mvm->queue_info[mvm_sta->reserved_queue].status =
1624 IWL_MVM_QUEUE_RESERVED;
1625
1626 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
1627 struct iwl_mvm_tid_data *tid_data = &mvm_sta->tid_data[i];
1628 int txq_id = tid_data->txq_id;
1629 int ac;
1630
1631 if (txq_id == IWL_MVM_INVALID_QUEUE)
1632 continue;
1633
1634 ac = tid_to_mac80211_ac[i];
1635
1636 if (iwl_mvm_has_new_tx_api(mvm)) {
1637 IWL_DEBUG_TX_QUEUES(mvm,
1638 "Re-mapping sta %d tid %d\n",
1639 mvm_sta->deflink.sta_id, i);
1640 txq_id = iwl_mvm_tvqm_enable_txq(mvm, sta,
1641 mvm_sta->deflink.sta_id,
1642 i, wdg);
1643 /*
1644 * on failures, just set it to IWL_MVM_INVALID_QUEUE
1645 * to try again later, we have no other good way of
1646 * failing here
1647 */
1648 if (txq_id < 0)
1649 txq_id = IWL_MVM_INVALID_QUEUE;
1650 tid_data->txq_id = txq_id;
1651
1652 /*
1653 * Since we don't set the seq number after reset, and HW
1654 * sets it now, FW reset will cause the seq num to start
1655 * at 0 again, so driver will need to update it
1656 * internally as well, so it keeps in sync with real val
1657 */
1658 tid_data->seq_number = 0;
1659 } else {
1660 u16 seq = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
1661
1662 cfg.tid = i;
1663 cfg.fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac);
1664 cfg.aggregate = (txq_id >= IWL_MVM_DQA_MIN_DATA_QUEUE ||
1665 txq_id ==
1666 IWL_MVM_DQA_BSS_CLIENT_QUEUE);
1667
1668 IWL_DEBUG_TX_QUEUES(mvm,
1669 "Re-mapping sta %d tid %d to queue %d\n",
1670 mvm_sta->deflink.sta_id, i,
1671 txq_id);
1672
1673 iwl_mvm_enable_txq(mvm, sta, txq_id, seq, &cfg, wdg);
1674 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_READY;
1675 }
1676 }
1677 }
1678
iwl_mvm_add_int_sta_common(struct iwl_mvm * mvm,struct iwl_mvm_int_sta * sta,const u8 * addr,u16 mac_id,u16 color)1679 static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm,
1680 struct iwl_mvm_int_sta *sta,
1681 const u8 *addr,
1682 u16 mac_id, u16 color)
1683 {
1684 struct iwl_mvm_add_sta_cmd cmd;
1685 int ret;
1686 u32 status = ADD_STA_SUCCESS;
1687
1688 lockdep_assert_held(&mvm->mutex);
1689
1690 memset(&cmd, 0, sizeof(cmd));
1691 cmd.sta_id = sta->sta_id;
1692
1693 if (iwl_mvm_has_new_station_api(mvm->fw) &&
1694 sta->type == IWL_STA_AUX_ACTIVITY)
1695 cmd.mac_id_n_color = cpu_to_le32(mac_id);
1696 else
1697 cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id,
1698 color));
1699
1700 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
1701 cmd.station_type = sta->type;
1702
1703 if (!iwl_mvm_has_new_tx_api(mvm))
1704 cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk);
1705 cmd.tid_disable_tx = cpu_to_le16(0xffff);
1706
1707 if (addr)
1708 memcpy(cmd.addr, addr, ETH_ALEN);
1709
1710 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
1711 iwl_mvm_add_sta_cmd_size(mvm),
1712 &cmd, &status);
1713 if (ret)
1714 return ret;
1715
1716 switch (status & IWL_ADD_STA_STATUS_MASK) {
1717 case ADD_STA_SUCCESS:
1718 IWL_DEBUG_INFO(mvm, "Internal station added.\n");
1719 return 0;
1720 default:
1721 ret = -EIO;
1722 IWL_ERR(mvm, "Add internal station failed, status=0x%x\n",
1723 status);
1724 break;
1725 }
1726 return ret;
1727 }
1728
1729 /* 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)1730 int iwl_mvm_sta_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1731 struct ieee80211_sta *sta, int sta_id, u8 sta_type)
1732 {
1733 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1734 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1735 struct iwl_mvm_rxq_dup_data *dup_data;
1736 int i, ret = 0;
1737
1738 lockdep_assert_held(&mvm->mutex);
1739
1740 mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id,
1741 mvmvif->color);
1742 mvm_sta->vif = vif;
1743
1744 /* for MLD sta_id(s) should be allocated for each link before calling
1745 * this function
1746 */
1747 if (!mvm->mld_api_is_used) {
1748 if (WARN_ON(sta_id == IWL_MVM_INVALID_STA))
1749 return -EINVAL;
1750
1751 mvm_sta->deflink.sta_id = sta_id;
1752 rcu_assign_pointer(mvm_sta->link[0], &mvm_sta->deflink);
1753
1754 if (!mvm->trans->trans_cfg->gen2)
1755 mvm_sta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize =
1756 LINK_QUAL_AGG_FRAME_LIMIT_DEF;
1757 else
1758 mvm_sta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize =
1759 LINK_QUAL_AGG_FRAME_LIMIT_GEN2_DEF;
1760 }
1761
1762 mvm_sta->tt_tx_protection = false;
1763 mvm_sta->sta_type = sta_type;
1764
1765 mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */
1766
1767 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
1768 /*
1769 * Mark all queues for this STA as unallocated and defer TX
1770 * frames until the queue is allocated
1771 */
1772 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE;
1773 }
1774
1775 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) {
1776 struct iwl_mvm_txq *mvmtxq =
1777 iwl_mvm_txq_from_mac80211(sta->txq[i]);
1778
1779 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE;
1780 INIT_LIST_HEAD(&mvmtxq->list);
1781 atomic_set(&mvmtxq->tx_request, 0);
1782 }
1783
1784 if (iwl_mvm_has_new_rx_api(mvm)) {
1785 int q;
1786
1787 dup_data = kcalloc(mvm->trans->num_rx_queues,
1788 sizeof(*dup_data), GFP_KERNEL);
1789 if (!dup_data)
1790 return -ENOMEM;
1791 /*
1792 * Initialize all the last_seq values to 0xffff which can never
1793 * compare equal to the frame's seq_ctrl in the check in
1794 * iwl_mvm_is_dup() since the lower 4 bits are the fragment
1795 * number and fragmented packets don't reach that function.
1796 *
1797 * This thus allows receiving a packet with seqno 0 and the
1798 * retry bit set as the very first packet on a new TID.
1799 */
1800 for (q = 0; q < mvm->trans->num_rx_queues; q++)
1801 memset(dup_data[q].last_seq, 0xff,
1802 sizeof(dup_data[q].last_seq));
1803 mvm_sta->dup_data = dup_data;
1804 }
1805
1806 if (!iwl_mvm_has_new_tx_api(mvm)) {
1807 ret = iwl_mvm_reserve_sta_stream(mvm, sta,
1808 ieee80211_vif_type_p2p(vif));
1809 if (ret)
1810 return ret;
1811 }
1812
1813 /*
1814 * if rs is registered with mac80211, then "add station" will be handled
1815 * via the corresponding ops, otherwise need to notify rate scaling here
1816 */
1817 if (iwl_mvm_has_tlc_offload(mvm))
1818 iwl_mvm_rs_add_sta(mvm, mvm_sta);
1819 else
1820 spin_lock_init(&mvm_sta->deflink.lq_sta.rs_drv.pers.lock);
1821
1822 iwl_mvm_toggle_tx_ant(mvm, &mvm_sta->tx_ant);
1823
1824 return 0;
1825 }
1826
iwl_mvm_add_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * sta)1827 int iwl_mvm_add_sta(struct iwl_mvm *mvm,
1828 struct ieee80211_vif *vif,
1829 struct ieee80211_sta *sta)
1830 {
1831 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1832 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1833 int ret, sta_id;
1834 bool sta_update = false;
1835 unsigned int sta_flags = 0;
1836
1837 lockdep_assert_held(&mvm->mutex);
1838
1839 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1840 sta_id = iwl_mvm_find_free_sta_id(mvm,
1841 ieee80211_vif_type_p2p(vif));
1842 else
1843 sta_id = mvm_sta->deflink.sta_id;
1844
1845 if (sta_id == IWL_MVM_INVALID_STA)
1846 return -ENOSPC;
1847
1848 spin_lock_init(&mvm_sta->lock);
1849
1850 /* if this is a HW restart re-alloc existing queues */
1851 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1852 struct iwl_mvm_int_sta tmp_sta = {
1853 .sta_id = sta_id,
1854 .type = mvm_sta->sta_type,
1855 };
1856
1857 /* First add an empty station since allocating
1858 * a queue requires a valid station
1859 */
1860 ret = iwl_mvm_add_int_sta_common(mvm, &tmp_sta, sta->addr,
1861 mvmvif->id, mvmvif->color);
1862 if (ret)
1863 goto err;
1864
1865 iwl_mvm_realloc_queues_after_restart(mvm, sta);
1866 sta_update = true;
1867 sta_flags = iwl_mvm_has_new_tx_api(mvm) ? 0 : STA_MODIFY_QUEUES;
1868 goto update_fw;
1869 }
1870
1871 ret = iwl_mvm_sta_init(mvm, vif, sta, sta_id,
1872 sta->tdls ? IWL_STA_TDLS_LINK : IWL_STA_LINK);
1873 if (ret)
1874 goto err;
1875
1876 update_fw:
1877 ret = iwl_mvm_sta_send_to_fw(mvm, sta, sta_update, sta_flags);
1878 if (ret)
1879 goto err;
1880
1881 if (vif->type == NL80211_IFTYPE_STATION) {
1882 if (!sta->tdls) {
1883 WARN_ON(mvmvif->deflink.ap_sta_id != IWL_MVM_INVALID_STA);
1884 mvmvif->deflink.ap_sta_id = sta_id;
1885 } else {
1886 WARN_ON(mvmvif->deflink.ap_sta_id == IWL_MVM_INVALID_STA);
1887 }
1888 }
1889
1890 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta);
1891
1892 return 0;
1893
1894 err:
1895 return ret;
1896 }
1897
iwl_mvm_drain_sta(struct iwl_mvm * mvm,struct iwl_mvm_sta * mvmsta,bool drain)1898 int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta,
1899 bool drain)
1900 {
1901 struct iwl_mvm_add_sta_cmd cmd = {};
1902 int ret;
1903 u32 status;
1904
1905 lockdep_assert_held(&mvm->mutex);
1906
1907 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color);
1908 cmd.sta_id = mvmsta->deflink.sta_id;
1909 cmd.add_modify = STA_MODE_MODIFY;
1910 cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0;
1911 cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW);
1912
1913 status = ADD_STA_SUCCESS;
1914 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
1915 iwl_mvm_add_sta_cmd_size(mvm),
1916 &cmd, &status);
1917 if (ret)
1918 return ret;
1919
1920 switch (status & IWL_ADD_STA_STATUS_MASK) {
1921 case ADD_STA_SUCCESS:
1922 IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n",
1923 mvmsta->deflink.sta_id);
1924 break;
1925 default:
1926 ret = -EIO;
1927 #if defined(__linux__)
1928 IWL_ERR(mvm, "Couldn't drain frames for staid %d\n",
1929 mvmsta->deflink.sta_id);
1930 #elif defined(__FreeBSD__)
1931 IWL_ERR(mvm, "Couldn't drain frames for staid %d, status %#x\n",
1932 mvmsta->deflink.sta_id, status);
1933 #endif
1934 break;
1935 }
1936
1937 return ret;
1938 }
1939
1940 /*
1941 * Remove a station from the FW table. Before sending the command to remove
1942 * the station validate that the station is indeed known to the driver (sanity
1943 * only).
1944 */
iwl_mvm_rm_sta_common(struct iwl_mvm * mvm,u8 sta_id)1945 static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id)
1946 {
1947 struct ieee80211_sta *sta;
1948 struct iwl_mvm_rm_sta_cmd rm_sta_cmd = {
1949 .sta_id = sta_id,
1950 };
1951 int ret;
1952
1953 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1954 lockdep_is_held(&mvm->mutex));
1955
1956 /* Note: internal stations are marked as error values */
1957 if (!sta) {
1958 IWL_ERR(mvm, "Invalid station id\n");
1959 return -EINVAL;
1960 }
1961
1962 ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0,
1963 sizeof(rm_sta_cmd), &rm_sta_cmd);
1964 if (ret) {
1965 IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id);
1966 return ret;
1967 }
1968
1969 return 0;
1970 }
1971
iwl_mvm_disable_sta_queues(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * sta)1972 static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm,
1973 struct ieee80211_vif *vif,
1974 struct ieee80211_sta *sta)
1975 {
1976 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1977 int i;
1978
1979 lockdep_assert_held(&mvm->mutex);
1980
1981 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) {
1982 if (mvm_sta->tid_data[i].txq_id == IWL_MVM_INVALID_QUEUE)
1983 continue;
1984
1985 iwl_mvm_disable_txq(mvm, sta, mvm_sta->deflink.sta_id,
1986 &mvm_sta->tid_data[i].txq_id, i);
1987 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE;
1988 }
1989
1990 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) {
1991 struct iwl_mvm_txq *mvmtxq =
1992 iwl_mvm_txq_from_mac80211(sta->txq[i]);
1993
1994 spin_lock_bh(&mvm->add_stream_lock);
1995 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE;
1996 list_del_init(&mvmtxq->list);
1997 clear_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state);
1998 spin_unlock_bh(&mvm->add_stream_lock);
1999 }
2000 }
2001
iwl_mvm_wait_sta_queues_empty(struct iwl_mvm * mvm,struct iwl_mvm_sta * mvm_sta)2002 int iwl_mvm_wait_sta_queues_empty(struct iwl_mvm *mvm,
2003 struct iwl_mvm_sta *mvm_sta)
2004 {
2005 int i;
2006
2007 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) {
2008 u16 txq_id;
2009 int ret;
2010
2011 spin_lock_bh(&mvm_sta->lock);
2012 txq_id = mvm_sta->tid_data[i].txq_id;
2013 spin_unlock_bh(&mvm_sta->lock);
2014
2015 if (txq_id == IWL_MVM_INVALID_QUEUE)
2016 continue;
2017
2018 ret = iwl_trans_wait_txq_empty(mvm->trans, txq_id);
2019 if (ret)
2020 return ret;
2021 }
2022
2023 return 0;
2024 }
2025
2026 /* Execute the common part for both MLD and non-MLD modes.
2027 * Returns if we're done with removing the station, either
2028 * with error or success
2029 */
iwl_mvm_sta_del(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_link_sta * link_sta,int * ret)2030 bool iwl_mvm_sta_del(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2031 struct ieee80211_sta *sta,
2032 struct ieee80211_link_sta *link_sta, int *ret)
2033 {
2034 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2035 struct iwl_mvm_vif_link_info *mvm_link =
2036 mvmvif->link[link_sta->link_id];
2037 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2038 struct iwl_mvm_link_sta *mvm_link_sta;
2039 u8 sta_id;
2040
2041 lockdep_assert_held(&mvm->mutex);
2042
2043 mvm_link_sta =
2044 rcu_dereference_protected(mvm_sta->link[link_sta->link_id],
2045 lockdep_is_held(&mvm->mutex));
2046 sta_id = mvm_link_sta->sta_id;
2047
2048 /* If there is a TXQ still marked as reserved - free it */
2049 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) {
2050 u8 reserved_txq = mvm_sta->reserved_queue;
2051 enum iwl_mvm_queue_status *status;
2052
2053 /*
2054 * If no traffic has gone through the reserved TXQ - it
2055 * is still marked as IWL_MVM_QUEUE_RESERVED, and
2056 * should be manually marked as free again
2057 */
2058 status = &mvm->queue_info[reserved_txq].status;
2059 if (WARN((*status != IWL_MVM_QUEUE_RESERVED) &&
2060 (*status != IWL_MVM_QUEUE_FREE),
2061 "sta_id %d reserved txq %d status %d",
2062 sta_id, reserved_txq, *status)) {
2063 *ret = -EINVAL;
2064 return true;
2065 }
2066
2067 *status = IWL_MVM_QUEUE_FREE;
2068 }
2069
2070 if (vif->type == NL80211_IFTYPE_STATION) {
2071 /* if associated - we can't remove the AP STA now */
2072 if (vif->cfg.assoc)
2073 return true;
2074
2075 /* first remove remaining keys */
2076 iwl_mvm_sec_key_remove_ap(mvm, vif, mvm_link, 0);
2077
2078 /* unassoc - go ahead - remove the AP STA now */
2079 mvm_link->ap_sta_id = IWL_MVM_INVALID_STA;
2080 }
2081
2082 /*
2083 * This shouldn't happen - the TDLS channel switch should be canceled
2084 * before the STA is removed.
2085 */
2086 if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == sta_id)) {
2087 mvm->tdls_cs.peer.sta_id = IWL_MVM_INVALID_STA;
2088 cancel_delayed_work(&mvm->tdls_cs.dwork);
2089 }
2090
2091 return false;
2092 }
2093
iwl_mvm_rm_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * sta)2094 int iwl_mvm_rm_sta(struct iwl_mvm *mvm,
2095 struct ieee80211_vif *vif,
2096 struct ieee80211_sta *sta)
2097 {
2098 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2099 int ret;
2100
2101 lockdep_assert_held(&mvm->mutex);
2102
2103 ret = iwl_mvm_drain_sta(mvm, mvm_sta, true);
2104 if (ret)
2105 return ret;
2106
2107 /* flush its queues here since we are freeing mvm_sta */
2108 ret = iwl_mvm_flush_sta(mvm, mvm_sta, false);
2109 if (ret)
2110 return ret;
2111 if (iwl_mvm_has_new_tx_api(mvm)) {
2112 ret = iwl_mvm_wait_sta_queues_empty(mvm, mvm_sta);
2113 } else {
2114 u32 q_mask = mvm_sta->tfd_queue_msk;
2115
2116 ret = iwl_trans_wait_tx_queues_empty(mvm->trans,
2117 q_mask);
2118 }
2119 if (ret)
2120 return ret;
2121
2122 ret = iwl_mvm_drain_sta(mvm, mvm_sta, false);
2123
2124 iwl_mvm_disable_sta_queues(mvm, vif, sta);
2125
2126 if (iwl_mvm_sta_del(mvm, vif, sta, &sta->deflink, &ret))
2127 return ret;
2128
2129 ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->deflink.sta_id);
2130 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->deflink.sta_id], NULL);
2131
2132 return ret;
2133 }
2134
iwl_mvm_rm_sta_id(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u8 sta_id)2135 int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm,
2136 struct ieee80211_vif *vif,
2137 u8 sta_id)
2138 {
2139 int ret = iwl_mvm_rm_sta_common(mvm, sta_id);
2140
2141 lockdep_assert_held(&mvm->mutex);
2142
2143 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL);
2144 return ret;
2145 }
2146
iwl_mvm_allocate_int_sta(struct iwl_mvm * mvm,struct iwl_mvm_int_sta * sta,u32 qmask,enum nl80211_iftype iftype,u8 type)2147 int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm,
2148 struct iwl_mvm_int_sta *sta,
2149 u32 qmask, enum nl80211_iftype iftype,
2150 u8 type)
2151 {
2152 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) ||
2153 sta->sta_id == IWL_MVM_INVALID_STA) {
2154 sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype);
2155 if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_INVALID_STA))
2156 return -ENOSPC;
2157 }
2158
2159 sta->tfd_queue_msk = qmask;
2160 sta->type = type;
2161
2162 /* put a non-NULL value so iterating over the stations won't stop */
2163 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL));
2164 return 0;
2165 }
2166
iwl_mvm_dealloc_int_sta(struct iwl_mvm * mvm,struct iwl_mvm_int_sta * sta)2167 void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta)
2168 {
2169 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL);
2170 memset(sta, 0, sizeof(struct iwl_mvm_int_sta));
2171 sta->sta_id = IWL_MVM_INVALID_STA;
2172 }
2173
iwl_mvm_enable_aux_snif_queue(struct iwl_mvm * mvm,u16 queue,u8 sta_id,u8 fifo)2174 static void iwl_mvm_enable_aux_snif_queue(struct iwl_mvm *mvm, u16 queue,
2175 u8 sta_id, u8 fifo)
2176 {
2177 unsigned int wdg_timeout =
2178 mvm->trans->trans_cfg->base_params->wd_timeout;
2179 struct iwl_trans_txq_scd_cfg cfg = {
2180 .fifo = fifo,
2181 .sta_id = sta_id,
2182 .tid = IWL_MAX_TID_COUNT,
2183 .aggregate = false,
2184 .frame_limit = IWL_FRAME_LIMIT,
2185 };
2186
2187 WARN_ON(iwl_mvm_has_new_tx_api(mvm));
2188
2189 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout);
2190 }
2191
iwl_mvm_enable_aux_snif_queue_tvqm(struct iwl_mvm * mvm,u8 sta_id)2192 static int iwl_mvm_enable_aux_snif_queue_tvqm(struct iwl_mvm *mvm, u8 sta_id)
2193 {
2194 unsigned int wdg_timeout =
2195 mvm->trans->trans_cfg->base_params->wd_timeout;
2196
2197 WARN_ON(!iwl_mvm_has_new_tx_api(mvm));
2198
2199 return iwl_mvm_tvqm_enable_txq(mvm, NULL, sta_id, IWL_MAX_TID_COUNT,
2200 wdg_timeout);
2201 }
2202
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)2203 static int iwl_mvm_add_int_sta_with_queue(struct iwl_mvm *mvm, int macidx,
2204 int maccolor, u8 *addr,
2205 struct iwl_mvm_int_sta *sta,
2206 u16 *queue, int fifo)
2207 {
2208 int ret;
2209
2210 /* Map queue to fifo - needs to happen before adding station */
2211 if (!iwl_mvm_has_new_tx_api(mvm))
2212 iwl_mvm_enable_aux_snif_queue(mvm, *queue, sta->sta_id, fifo);
2213
2214 ret = iwl_mvm_add_int_sta_common(mvm, sta, addr, macidx, maccolor);
2215 if (ret) {
2216 if (!iwl_mvm_has_new_tx_api(mvm))
2217 iwl_mvm_disable_txq(mvm, NULL, sta->sta_id, queue,
2218 IWL_MAX_TID_COUNT);
2219 return ret;
2220 }
2221
2222 /*
2223 * For 22000 firmware and on we cannot add queue to a station unknown
2224 * to firmware so enable queue here - after the station was added
2225 */
2226 if (iwl_mvm_has_new_tx_api(mvm)) {
2227 int txq;
2228
2229 txq = iwl_mvm_enable_aux_snif_queue_tvqm(mvm, sta->sta_id);
2230 if (txq < 0) {
2231 iwl_mvm_rm_sta_common(mvm, sta->sta_id);
2232 return txq;
2233 }
2234
2235 *queue = txq;
2236 }
2237
2238 return 0;
2239 }
2240
iwl_mvm_add_aux_sta(struct iwl_mvm * mvm,u32 lmac_id)2241 int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm, u32 lmac_id)
2242 {
2243 int ret;
2244 u32 qmask = mvm->aux_queue == IWL_MVM_INVALID_QUEUE ? 0 :
2245 BIT(mvm->aux_queue);
2246
2247 lockdep_assert_held(&mvm->mutex);
2248
2249 /* Allocate aux station and assign to it the aux queue */
2250 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, qmask,
2251 NL80211_IFTYPE_UNSPECIFIED,
2252 IWL_STA_AUX_ACTIVITY);
2253 if (ret)
2254 return ret;
2255
2256 /*
2257 * In CDB NICs we need to specify which lmac to use for aux activity
2258 * using the mac_id argument place to send lmac_id to the function
2259 */
2260 ret = iwl_mvm_add_int_sta_with_queue(mvm, lmac_id, 0, NULL,
2261 &mvm->aux_sta, &mvm->aux_queue,
2262 IWL_MVM_TX_FIFO_MCAST);
2263 if (ret) {
2264 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
2265 return ret;
2266 }
2267
2268 return 0;
2269 }
2270
iwl_mvm_add_snif_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2271 int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2272 {
2273 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2274
2275 lockdep_assert_held(&mvm->mutex);
2276
2277 return iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, mvmvif->color,
2278 NULL, &mvm->snif_sta,
2279 &mvm->snif_queue,
2280 IWL_MVM_TX_FIFO_BE);
2281 }
2282
iwl_mvm_rm_snif_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2283 int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2284 {
2285 int ret;
2286
2287 lockdep_assert_held(&mvm->mutex);
2288
2289 if (WARN_ON_ONCE(mvm->snif_sta.sta_id == IWL_MVM_INVALID_STA))
2290 return -EINVAL;
2291
2292 iwl_mvm_disable_txq(mvm, NULL, mvm->snif_sta.sta_id,
2293 &mvm->snif_queue, IWL_MAX_TID_COUNT);
2294 ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id);
2295 if (ret)
2296 IWL_WARN(mvm, "Failed sending remove station\n");
2297
2298 return ret;
2299 }
2300
iwl_mvm_rm_aux_sta(struct iwl_mvm * mvm)2301 int iwl_mvm_rm_aux_sta(struct iwl_mvm *mvm)
2302 {
2303 int ret;
2304
2305 lockdep_assert_held(&mvm->mutex);
2306
2307 if (WARN_ON_ONCE(mvm->aux_sta.sta_id == IWL_MVM_INVALID_STA))
2308 return -EINVAL;
2309
2310 iwl_mvm_disable_txq(mvm, NULL, mvm->aux_sta.sta_id,
2311 &mvm->aux_queue, IWL_MAX_TID_COUNT);
2312 ret = iwl_mvm_rm_sta_common(mvm, mvm->aux_sta.sta_id);
2313 if (ret)
2314 IWL_WARN(mvm, "Failed sending remove station\n");
2315 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
2316
2317 return ret;
2318 }
2319
iwl_mvm_dealloc_snif_sta(struct iwl_mvm * mvm)2320 void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm)
2321 {
2322 iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta);
2323 }
2324
2325 /*
2326 * Send the add station command for the vif's broadcast station.
2327 * Assumes that the station was already allocated.
2328 *
2329 * @mvm: the mvm component
2330 * @vif: the interface to which the broadcast station is added
2331 * @bsta: the broadcast station to add.
2332 */
iwl_mvm_send_add_bcast_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2333 int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2334 {
2335 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2336 struct iwl_mvm_int_sta *bsta = &mvmvif->deflink.bcast_sta;
2337 static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
2338 const u8 *baddr = _baddr;
2339 int queue;
2340 int ret;
2341 unsigned int wdg_timeout =
2342 iwl_mvm_get_wd_timeout(mvm, vif, false, false);
2343 struct iwl_trans_txq_scd_cfg cfg = {
2344 .fifo = IWL_MVM_TX_FIFO_VO,
2345 .sta_id = mvmvif->deflink.bcast_sta.sta_id,
2346 .tid = IWL_MAX_TID_COUNT,
2347 .aggregate = false,
2348 .frame_limit = IWL_FRAME_LIMIT,
2349 };
2350
2351 lockdep_assert_held(&mvm->mutex);
2352
2353 if (!iwl_mvm_has_new_tx_api(mvm)) {
2354 if (vif->type == NL80211_IFTYPE_AP ||
2355 vif->type == NL80211_IFTYPE_ADHOC) {
2356 queue = mvm->probe_queue;
2357 } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2358 queue = mvm->p2p_dev_queue;
2359 } else {
2360 WARN(1, "Missing required TXQ for adding bcast STA\n");
2361 return -EINVAL;
2362 }
2363
2364 bsta->tfd_queue_msk |= BIT(queue);
2365
2366 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout);
2367 }
2368
2369 if (vif->type == NL80211_IFTYPE_ADHOC)
2370 baddr = vif->bss_conf.bssid;
2371
2372 if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_INVALID_STA))
2373 return -ENOSPC;
2374
2375 ret = iwl_mvm_add_int_sta_common(mvm, bsta, baddr,
2376 mvmvif->id, mvmvif->color);
2377 if (ret)
2378 return ret;
2379
2380 /*
2381 * For 22000 firmware and on we cannot add queue to a station unknown
2382 * to firmware so enable queue here - after the station was added
2383 */
2384 if (iwl_mvm_has_new_tx_api(mvm)) {
2385 queue = iwl_mvm_tvqm_enable_txq(mvm, NULL, bsta->sta_id,
2386 IWL_MAX_TID_COUNT,
2387 wdg_timeout);
2388 if (queue < 0) {
2389 iwl_mvm_rm_sta_common(mvm, bsta->sta_id);
2390 return queue;
2391 }
2392
2393 if (vif->type == NL80211_IFTYPE_AP ||
2394 vif->type == NL80211_IFTYPE_ADHOC) {
2395 /* for queue management */
2396 mvm->probe_queue = queue;
2397 /* for use in TX */
2398 mvmvif->deflink.mgmt_queue = queue;
2399 } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2400 mvm->p2p_dev_queue = queue;
2401 }
2402 } else if (vif->type == NL80211_IFTYPE_AP ||
2403 vif->type == NL80211_IFTYPE_ADHOC) {
2404 /* set it for use in TX */
2405 mvmvif->deflink.mgmt_queue = mvm->probe_queue;
2406 }
2407
2408 return 0;
2409 }
2410
iwl_mvm_free_bcast_sta_queues(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2411 void iwl_mvm_free_bcast_sta_queues(struct iwl_mvm *mvm,
2412 struct ieee80211_vif *vif)
2413 {
2414 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2415 u16 *queueptr, queue;
2416
2417 lockdep_assert_held(&mvm->mutex);
2418
2419 iwl_mvm_flush_sta(mvm, &mvmvif->deflink.bcast_sta, true);
2420
2421 switch (vif->type) {
2422 case NL80211_IFTYPE_AP:
2423 case NL80211_IFTYPE_ADHOC:
2424 queueptr = &mvm->probe_queue;
2425 break;
2426 case NL80211_IFTYPE_P2P_DEVICE:
2427 queueptr = &mvm->p2p_dev_queue;
2428 break;
2429 default:
2430 WARN(1, "Can't free bcast queue on vif type %d\n",
2431 vif->type);
2432 return;
2433 }
2434
2435 queue = *queueptr;
2436 iwl_mvm_disable_txq(mvm, NULL, mvmvif->deflink.bcast_sta.sta_id,
2437 queueptr, IWL_MAX_TID_COUNT);
2438
2439 if (vif->type == NL80211_IFTYPE_AP || vif->type == NL80211_IFTYPE_ADHOC)
2440 mvmvif->deflink.mgmt_queue = mvm->probe_queue;
2441
2442 if (iwl_mvm_has_new_tx_api(mvm))
2443 return;
2444
2445 WARN_ON(!(mvmvif->deflink.bcast_sta.tfd_queue_msk & BIT(queue)));
2446 mvmvif->deflink.bcast_sta.tfd_queue_msk &= ~BIT(queue);
2447 }
2448
2449 /* Send the FW a request to remove the station from it's internal data
2450 * 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)2451 int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2452 {
2453 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2454 int ret;
2455
2456 lockdep_assert_held(&mvm->mutex);
2457
2458 iwl_mvm_free_bcast_sta_queues(mvm, vif);
2459
2460 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->deflink.bcast_sta.sta_id);
2461 if (ret)
2462 IWL_WARN(mvm, "Failed sending remove station\n");
2463 return ret;
2464 }
2465
iwl_mvm_alloc_bcast_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2466 int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2467 {
2468 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2469
2470 lockdep_assert_held(&mvm->mutex);
2471
2472 return iwl_mvm_allocate_int_sta(mvm, &mvmvif->deflink.bcast_sta, 0,
2473 ieee80211_vif_type_p2p(vif),
2474 IWL_STA_GENERAL_PURPOSE);
2475 }
2476
2477 /* Allocate a new station entry for the broadcast station to the given vif,
2478 * and send it to the FW.
2479 * Note that each P2P mac should have its own broadcast station.
2480 *
2481 * @mvm: the mvm component
2482 * @vif: the interface to which the broadcast station is added
2483 * @bsta: the broadcast station to add. */
iwl_mvm_add_p2p_bcast_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2484 int iwl_mvm_add_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2485 {
2486 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2487 struct iwl_mvm_int_sta *bsta = &mvmvif->deflink.bcast_sta;
2488 int ret;
2489
2490 lockdep_assert_held(&mvm->mutex);
2491
2492 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
2493 if (ret)
2494 return ret;
2495
2496 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2497
2498 if (ret)
2499 iwl_mvm_dealloc_int_sta(mvm, bsta);
2500
2501 return ret;
2502 }
2503
iwl_mvm_dealloc_bcast_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2504 void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2505 {
2506 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2507
2508 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->deflink.bcast_sta);
2509 }
2510
2511 /*
2512 * Send the FW a request to remove the station from it's internal data
2513 * structures, and in addition remove it from the local data structure.
2514 */
iwl_mvm_rm_p2p_bcast_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2515 int iwl_mvm_rm_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2516 {
2517 int ret;
2518
2519 lockdep_assert_held(&mvm->mutex);
2520
2521 ret = iwl_mvm_send_rm_bcast_sta(mvm, vif);
2522
2523 iwl_mvm_dealloc_bcast_sta(mvm, vif);
2524
2525 return ret;
2526 }
2527
2528 /*
2529 * Allocate a new station entry for the multicast station to the given vif,
2530 * and send it to the FW.
2531 * Note that each AP/GO mac should have its own multicast station.
2532 *
2533 * @mvm: the mvm component
2534 * @vif: the interface to which the multicast station is added
2535 */
iwl_mvm_add_mcast_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2536 int iwl_mvm_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2537 {
2538 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2539 struct iwl_mvm_int_sta *msta = &mvmvif->deflink.mcast_sta;
2540 static const u8 _maddr[] = {0x03, 0x00, 0x00, 0x00, 0x00, 0x00};
2541 const u8 *maddr = _maddr;
2542 struct iwl_trans_txq_scd_cfg cfg = {
2543 .fifo = vif->type == NL80211_IFTYPE_AP ?
2544 IWL_MVM_TX_FIFO_MCAST : IWL_MVM_TX_FIFO_BE,
2545 .sta_id = msta->sta_id,
2546 .tid = 0,
2547 .aggregate = false,
2548 .frame_limit = IWL_FRAME_LIMIT,
2549 };
2550 unsigned int timeout = iwl_mvm_get_wd_timeout(mvm, vif, false, false);
2551 int ret;
2552
2553 lockdep_assert_held(&mvm->mutex);
2554
2555 if (WARN_ON(vif->type != NL80211_IFTYPE_AP &&
2556 vif->type != NL80211_IFTYPE_ADHOC))
2557 return -ENOTSUPP;
2558
2559 /*
2560 * In IBSS, ieee80211_check_queues() sets the cab_queue to be
2561 * invalid, so make sure we use the queue we want.
2562 * Note that this is done here as we want to avoid making DQA
2563 * changes in mac80211 layer.
2564 */
2565 if (vif->type == NL80211_IFTYPE_ADHOC)
2566 mvmvif->deflink.cab_queue = IWL_MVM_DQA_GCAST_QUEUE;
2567
2568 /*
2569 * While in previous FWs we had to exclude cab queue from TFD queue
2570 * mask, now it is needed as any other queue.
2571 */
2572 if (!iwl_mvm_has_new_tx_api(mvm) &&
2573 fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) {
2574 iwl_mvm_enable_txq(mvm, NULL, mvmvif->deflink.cab_queue, 0,
2575 &cfg,
2576 timeout);
2577 msta->tfd_queue_msk |= BIT(mvmvif->deflink.cab_queue);
2578 }
2579 ret = iwl_mvm_add_int_sta_common(mvm, msta, maddr,
2580 mvmvif->id, mvmvif->color);
2581 if (ret)
2582 goto err;
2583
2584 /*
2585 * Enable cab queue after the ADD_STA command is sent.
2586 * This is needed for 22000 firmware which won't accept SCD_QUEUE_CFG
2587 * command with unknown station id, and for FW that doesn't support
2588 * station API since the cab queue is not included in the
2589 * tfd_queue_mask.
2590 */
2591 if (iwl_mvm_has_new_tx_api(mvm)) {
2592 int queue = iwl_mvm_tvqm_enable_txq(mvm, NULL, msta->sta_id,
2593 0, timeout);
2594 if (queue < 0) {
2595 ret = queue;
2596 goto err;
2597 }
2598 mvmvif->deflink.cab_queue = queue;
2599 } else if (!fw_has_api(&mvm->fw->ucode_capa,
2600 IWL_UCODE_TLV_API_STA_TYPE))
2601 iwl_mvm_enable_txq(mvm, NULL, mvmvif->deflink.cab_queue, 0,
2602 &cfg,
2603 timeout);
2604
2605 return 0;
2606 err:
2607 iwl_mvm_dealloc_int_sta(mvm, msta);
2608 return ret;
2609 }
2610
__iwl_mvm_remove_sta_key(struct iwl_mvm * mvm,u8 sta_id,struct ieee80211_key_conf * keyconf,bool mcast)2611 static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id,
2612 struct ieee80211_key_conf *keyconf,
2613 bool mcast)
2614 {
2615 union {
2616 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1;
2617 struct iwl_mvm_add_sta_key_cmd cmd;
2618 } u = {};
2619 bool new_api = fw_has_api(&mvm->fw->ucode_capa,
2620 IWL_UCODE_TLV_API_TKIP_MIC_KEYS);
2621 __le16 key_flags;
2622 int ret, size;
2623 u32 status;
2624
2625 /* This is a valid situation for GTK removal */
2626 if (sta_id == IWL_MVM_INVALID_STA)
2627 return 0;
2628
2629 key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) &
2630 STA_KEY_FLG_KEYID_MSK);
2631 key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP);
2632 key_flags |= cpu_to_le16(STA_KEY_NOT_VALID);
2633
2634 if (mcast)
2635 key_flags |= cpu_to_le16(STA_KEY_MULTICAST);
2636
2637 /*
2638 * The fields assigned here are in the same location at the start
2639 * of the command, so we can do this union trick.
2640 */
2641 u.cmd.common.key_flags = key_flags;
2642 u.cmd.common.key_offset = keyconf->hw_key_idx;
2643 u.cmd.common.sta_id = sta_id;
2644
2645 size = new_api ? sizeof(u.cmd) : sizeof(u.cmd_v1);
2646
2647 status = ADD_STA_SUCCESS;
2648 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, &u.cmd,
2649 &status);
2650
2651 switch (status) {
2652 case ADD_STA_SUCCESS:
2653 IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n");
2654 break;
2655 default:
2656 ret = -EIO;
2657 IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n");
2658 break;
2659 }
2660
2661 return ret;
2662 }
2663
2664 /*
2665 * Send the FW a request to remove the station from it's internal data
2666 * structures, and in addition remove it from the local data structure.
2667 */
iwl_mvm_rm_mcast_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2668 int iwl_mvm_rm_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2669 {
2670 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2671 int ret;
2672
2673 lockdep_assert_held(&mvm->mutex);
2674
2675 iwl_mvm_flush_sta(mvm, &mvmvif->deflink.mcast_sta, true);
2676
2677 iwl_mvm_disable_txq(mvm, NULL, mvmvif->deflink.mcast_sta.sta_id,
2678 &mvmvif->deflink.cab_queue, 0);
2679
2680 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->deflink.mcast_sta.sta_id);
2681 if (ret)
2682 IWL_WARN(mvm, "Failed sending remove station\n");
2683
2684 return ret;
2685 }
2686
iwl_mvm_sync_rxq_del_ba(struct iwl_mvm * mvm,u8 baid)2687 static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid)
2688 {
2689 struct iwl_mvm_delba_data notif = {
2690 .baid = baid,
2691 };
2692
2693 iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_NOTIF_DEL_BA, true,
2694 ¬if, sizeof(notif));
2695 };
2696
iwl_mvm_free_reorder(struct iwl_mvm * mvm,struct iwl_mvm_baid_data * data)2697 static void iwl_mvm_free_reorder(struct iwl_mvm *mvm,
2698 struct iwl_mvm_baid_data *data)
2699 {
2700 int i;
2701
2702 iwl_mvm_sync_rxq_del_ba(mvm, data->baid);
2703
2704 for (i = 0; i < mvm->trans->num_rx_queues; i++) {
2705 int j;
2706 struct iwl_mvm_reorder_buffer *reorder_buf =
2707 &data->reorder_buf[i];
2708 struct iwl_mvm_reorder_buf_entry *entries =
2709 &data->entries[i * data->entries_per_queue];
2710
2711 spin_lock_bh(&reorder_buf->lock);
2712 if (likely(!reorder_buf->num_stored)) {
2713 spin_unlock_bh(&reorder_buf->lock);
2714 continue;
2715 }
2716
2717 /*
2718 * This shouldn't happen in regular DELBA since the internal
2719 * delBA notification should trigger a release of all frames in
2720 * the reorder buffer.
2721 */
2722 WARN_ON(1);
2723
2724 for (j = 0; j < reorder_buf->buf_size; j++)
2725 __skb_queue_purge(&entries[j].e.frames);
2726 /*
2727 * Prevent timer re-arm. This prevents a very far fetched case
2728 * where we timed out on the notification. There may be prior
2729 * RX frames pending in the RX queue before the notification
2730 * that might get processed between now and the actual deletion
2731 * and we would re-arm the timer although we are deleting the
2732 * reorder buffer.
2733 */
2734 reorder_buf->removed = true;
2735 spin_unlock_bh(&reorder_buf->lock);
2736 del_timer_sync(&reorder_buf->reorder_timer);
2737 }
2738 }
2739
iwl_mvm_init_reorder_buffer(struct iwl_mvm * mvm,struct iwl_mvm_baid_data * data,u16 ssn,u16 buf_size)2740 static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm,
2741 struct iwl_mvm_baid_data *data,
2742 u16 ssn, u16 buf_size)
2743 {
2744 int i;
2745
2746 for (i = 0; i < mvm->trans->num_rx_queues; i++) {
2747 struct iwl_mvm_reorder_buffer *reorder_buf =
2748 &data->reorder_buf[i];
2749 struct iwl_mvm_reorder_buf_entry *entries =
2750 &data->entries[i * data->entries_per_queue];
2751 int j;
2752
2753 reorder_buf->num_stored = 0;
2754 reorder_buf->head_sn = ssn;
2755 reorder_buf->buf_size = buf_size;
2756 /* rx reorder timer */
2757 timer_setup(&reorder_buf->reorder_timer,
2758 iwl_mvm_reorder_timer_expired, 0);
2759 spin_lock_init(&reorder_buf->lock);
2760 reorder_buf->mvm = mvm;
2761 reorder_buf->queue = i;
2762 reorder_buf->valid = false;
2763 for (j = 0; j < reorder_buf->buf_size; j++)
2764 __skb_queue_head_init(&entries[j].e.frames);
2765 }
2766 }
2767
iwl_mvm_fw_baid_op_sta(struct iwl_mvm * mvm,struct ieee80211_sta * sta,bool start,int tid,u16 ssn,u16 buf_size)2768 static int iwl_mvm_fw_baid_op_sta(struct iwl_mvm *mvm,
2769 struct ieee80211_sta *sta,
2770 bool start, int tid, u16 ssn,
2771 u16 buf_size)
2772 {
2773 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2774 struct iwl_mvm_add_sta_cmd cmd = {
2775 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color),
2776 .sta_id = mvm_sta->deflink.sta_id,
2777 .add_modify = STA_MODE_MODIFY,
2778 };
2779 u32 status;
2780 int ret;
2781
2782 if (start) {
2783 cmd.add_immediate_ba_tid = tid;
2784 cmd.add_immediate_ba_ssn = cpu_to_le16(ssn);
2785 cmd.rx_ba_window = cpu_to_le16(buf_size);
2786 cmd.modify_mask = STA_MODIFY_ADD_BA_TID;
2787 } else {
2788 cmd.remove_immediate_ba_tid = tid;
2789 cmd.modify_mask = STA_MODIFY_REMOVE_BA_TID;
2790 }
2791
2792 status = ADD_STA_SUCCESS;
2793 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
2794 iwl_mvm_add_sta_cmd_size(mvm),
2795 &cmd, &status);
2796 if (ret)
2797 return ret;
2798
2799 switch (status & IWL_ADD_STA_STATUS_MASK) {
2800 case ADD_STA_SUCCESS:
2801 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n",
2802 start ? "start" : "stopp");
2803 if (WARN_ON(start && iwl_mvm_has_new_rx_api(mvm) &&
2804 !(status & IWL_ADD_STA_BAID_VALID_MASK)))
2805 return -EINVAL;
2806 return u32_get_bits(status, IWL_ADD_STA_BAID_MASK);
2807 case ADD_STA_IMMEDIATE_BA_FAILURE:
2808 IWL_WARN(mvm, "RX BA Session refused by fw\n");
2809 return -ENOSPC;
2810 default:
2811 IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n",
2812 start ? "start" : "stopp", status);
2813 return -EIO;
2814 }
2815 }
2816
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)2817 static int iwl_mvm_fw_baid_op_cmd(struct iwl_mvm *mvm,
2818 struct ieee80211_sta *sta,
2819 bool start, int tid, u16 ssn,
2820 u16 buf_size, int baid)
2821 {
2822 struct iwl_rx_baid_cfg_cmd cmd = {
2823 .action = start ? cpu_to_le32(IWL_RX_BAID_ACTION_ADD) :
2824 cpu_to_le32(IWL_RX_BAID_ACTION_REMOVE),
2825 };
2826 u32 cmd_id = WIDE_ID(DATA_PATH_GROUP, RX_BAID_ALLOCATION_CONFIG_CMD);
2827 int ret;
2828
2829 BUILD_BUG_ON(sizeof(struct iwl_rx_baid_cfg_resp) != sizeof(baid));
2830
2831 if (start) {
2832 cmd.alloc.sta_id_mask =
2833 cpu_to_le32(iwl_mvm_sta_fw_id_mask(mvm, sta, -1));
2834 cmd.alloc.tid = tid;
2835 cmd.alloc.ssn = cpu_to_le16(ssn);
2836 cmd.alloc.win_size = cpu_to_le16(buf_size);
2837 baid = -EIO;
2838 } else if (iwl_fw_lookup_cmd_ver(mvm->fw, cmd_id, 1) == 1) {
2839 cmd.remove_v1.baid = cpu_to_le32(baid);
2840 BUILD_BUG_ON(sizeof(cmd.remove_v1) > sizeof(cmd.remove));
2841 } else {
2842 cmd.remove.sta_id_mask =
2843 cpu_to_le32(iwl_mvm_sta_fw_id_mask(mvm, sta, -1));
2844 cmd.remove.tid = cpu_to_le32(tid);
2845 }
2846
2847 ret = iwl_mvm_send_cmd_pdu_status(mvm, cmd_id, sizeof(cmd),
2848 &cmd, &baid);
2849 if (ret)
2850 return ret;
2851
2852 if (!start) {
2853 /* ignore firmware baid on remove */
2854 baid = 0;
2855 }
2856
2857 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n",
2858 start ? "start" : "stopp");
2859
2860 if (baid < 0 || baid >= ARRAY_SIZE(mvm->baid_map))
2861 return -EINVAL;
2862
2863 return baid;
2864 }
2865
iwl_mvm_fw_baid_op(struct iwl_mvm * mvm,struct ieee80211_sta * sta,bool start,int tid,u16 ssn,u16 buf_size,int baid)2866 static int iwl_mvm_fw_baid_op(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
2867 bool start, int tid, u16 ssn, u16 buf_size,
2868 int baid)
2869 {
2870 if (fw_has_capa(&mvm->fw->ucode_capa,
2871 IWL_UCODE_TLV_CAPA_BAID_ML_SUPPORT))
2872 return iwl_mvm_fw_baid_op_cmd(mvm, sta, start,
2873 tid, ssn, buf_size, baid);
2874
2875 return iwl_mvm_fw_baid_op_sta(mvm, sta, start,
2876 tid, ssn, buf_size);
2877 }
2878
iwl_mvm_sta_rx_agg(struct iwl_mvm * mvm,struct ieee80211_sta * sta,int tid,u16 ssn,bool start,u16 buf_size,u16 timeout)2879 int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
2880 int tid, u16 ssn, bool start, u16 buf_size, u16 timeout)
2881 {
2882 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2883 struct iwl_mvm_baid_data *baid_data = NULL;
2884 int ret, baid;
2885 u32 max_ba_id_sessions = iwl_mvm_has_new_tx_api(mvm) ? IWL_MAX_BAID :
2886 IWL_MAX_BAID_OLD;
2887
2888 lockdep_assert_held(&mvm->mutex);
2889
2890 if (start && mvm->rx_ba_sessions >= max_ba_id_sessions) {
2891 IWL_WARN(mvm, "Not enough RX BA SESSIONS\n");
2892 return -ENOSPC;
2893 }
2894
2895 if (iwl_mvm_has_new_rx_api(mvm) && start) {
2896 u32 reorder_buf_size = buf_size * sizeof(baid_data->entries[0]);
2897
2898 /* sparse doesn't like the __align() so don't check */
2899 #ifndef __CHECKER__
2900 /*
2901 * The division below will be OK if either the cache line size
2902 * can be divided by the entry size (ALIGN will round up) or if
2903 * if the entry size can be divided by the cache line size, in
2904 * which case the ALIGN() will do nothing.
2905 */
2906 BUILD_BUG_ON(SMP_CACHE_BYTES % sizeof(baid_data->entries[0]) &&
2907 sizeof(baid_data->entries[0]) % SMP_CACHE_BYTES);
2908 #endif
2909
2910 /*
2911 * Upward align the reorder buffer size to fill an entire cache
2912 * line for each queue, to avoid sharing cache lines between
2913 * different queues.
2914 */
2915 reorder_buf_size = ALIGN(reorder_buf_size, SMP_CACHE_BYTES);
2916
2917 /*
2918 * Allocate here so if allocation fails we can bail out early
2919 * before starting the BA session in the firmware
2920 */
2921 baid_data = kzalloc(sizeof(*baid_data) +
2922 mvm->trans->num_rx_queues *
2923 reorder_buf_size,
2924 GFP_KERNEL);
2925 if (!baid_data)
2926 return -ENOMEM;
2927
2928 /*
2929 * This division is why we need the above BUILD_BUG_ON(),
2930 * if that doesn't hold then this will not be right.
2931 */
2932 baid_data->entries_per_queue =
2933 reorder_buf_size / sizeof(baid_data->entries[0]);
2934 }
2935
2936 if (iwl_mvm_has_new_rx_api(mvm) && !start) {
2937 baid = mvm_sta->tid_to_baid[tid];
2938 } else {
2939 /* we don't really need it in this case */
2940 baid = -1;
2941 }
2942
2943 /* Don't send command to remove (start=0) BAID during restart */
2944 if (start || !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
2945 baid = iwl_mvm_fw_baid_op(mvm, sta, start, tid, ssn, buf_size,
2946 baid);
2947
2948 if (baid < 0) {
2949 ret = baid;
2950 goto out_free;
2951 }
2952
2953 if (start) {
2954 mvm->rx_ba_sessions++;
2955
2956 if (!iwl_mvm_has_new_rx_api(mvm))
2957 return 0;
2958
2959 baid_data->baid = baid;
2960 baid_data->timeout = timeout;
2961 baid_data->last_rx = jiffies;
2962 baid_data->rcu_ptr = &mvm->baid_map[baid];
2963 timer_setup(&baid_data->session_timer,
2964 iwl_mvm_rx_agg_session_expired, 0);
2965 baid_data->mvm = mvm;
2966 baid_data->tid = tid;
2967 baid_data->sta_mask = iwl_mvm_sta_fw_id_mask(mvm, sta, -1);
2968
2969 mvm_sta->tid_to_baid[tid] = baid;
2970 if (timeout)
2971 mod_timer(&baid_data->session_timer,
2972 TU_TO_EXP_TIME(timeout * 2));
2973
2974 iwl_mvm_init_reorder_buffer(mvm, baid_data, ssn, buf_size);
2975 /*
2976 * protect the BA data with RCU to cover a case where our
2977 * internal RX sync mechanism will timeout (not that it's
2978 * supposed to happen) and we will free the session data while
2979 * RX is being processed in parallel
2980 */
2981 IWL_DEBUG_HT(mvm, "Sta %d(%d) is assigned to BAID %d\n",
2982 mvm_sta->deflink.sta_id, tid, baid);
2983 WARN_ON(rcu_access_pointer(mvm->baid_map[baid]));
2984 rcu_assign_pointer(mvm->baid_map[baid], baid_data);
2985 } else {
2986 baid = mvm_sta->tid_to_baid[tid];
2987
2988 if (mvm->rx_ba_sessions > 0)
2989 /* check that restart flow didn't zero the counter */
2990 mvm->rx_ba_sessions--;
2991 if (!iwl_mvm_has_new_rx_api(mvm))
2992 return 0;
2993
2994 if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID))
2995 return -EINVAL;
2996
2997 baid_data = rcu_access_pointer(mvm->baid_map[baid]);
2998 if (WARN_ON(!baid_data))
2999 return -EINVAL;
3000
3001 /* synchronize all rx queues so we can safely delete */
3002 iwl_mvm_free_reorder(mvm, baid_data);
3003 timer_shutdown_sync(&baid_data->session_timer);
3004 RCU_INIT_POINTER(mvm->baid_map[baid], NULL);
3005 kfree_rcu(baid_data, rcu_head);
3006 IWL_DEBUG_HT(mvm, "BAID %d is free\n", baid);
3007
3008 /*
3009 * After we've deleted it, do another queue sync
3010 * so if an IWL_MVM_RXQ_NSSN_SYNC was concurrently
3011 * running it won't find a new session in the old
3012 * BAID. It can find the NULL pointer for the BAID,
3013 * but we must not have it find a different session.
3014 */
3015 iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_EMPTY,
3016 true, NULL, 0);
3017 }
3018 return 0;
3019
3020 out_free:
3021 kfree(baid_data);
3022 return ret;
3023 }
3024
iwl_mvm_sta_tx_agg(struct iwl_mvm * mvm,struct ieee80211_sta * sta,int tid,u8 queue,bool start)3025 int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
3026 int tid, u8 queue, bool start)
3027 {
3028 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3029 struct iwl_mvm_add_sta_cmd cmd = {};
3030 int ret;
3031 u32 status;
3032
3033 lockdep_assert_held(&mvm->mutex);
3034
3035 if (start) {
3036 mvm_sta->tfd_queue_msk |= BIT(queue);
3037 mvm_sta->tid_disable_agg &= ~BIT(tid);
3038 } else {
3039 /* In DQA-mode the queue isn't removed on agg termination */
3040 mvm_sta->tid_disable_agg |= BIT(tid);
3041 }
3042
3043 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color);
3044 cmd.sta_id = mvm_sta->deflink.sta_id;
3045 cmd.add_modify = STA_MODE_MODIFY;
3046 if (!iwl_mvm_has_new_tx_api(mvm))
3047 cmd.modify_mask = STA_MODIFY_QUEUES;
3048 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX;
3049 cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk);
3050 cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg);
3051
3052 status = ADD_STA_SUCCESS;
3053 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
3054 iwl_mvm_add_sta_cmd_size(mvm),
3055 &cmd, &status);
3056 if (ret)
3057 return ret;
3058
3059 switch (status & IWL_ADD_STA_STATUS_MASK) {
3060 case ADD_STA_SUCCESS:
3061 break;
3062 default:
3063 ret = -EIO;
3064 IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n",
3065 start ? "start" : "stopp", status);
3066 break;
3067 }
3068
3069 return ret;
3070 }
3071
3072 const u8 tid_to_mac80211_ac[] = {
3073 IEEE80211_AC_BE,
3074 IEEE80211_AC_BK,
3075 IEEE80211_AC_BK,
3076 IEEE80211_AC_BE,
3077 IEEE80211_AC_VI,
3078 IEEE80211_AC_VI,
3079 IEEE80211_AC_VO,
3080 IEEE80211_AC_VO,
3081 IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */
3082 };
3083
3084 static const u8 tid_to_ucode_ac[] = {
3085 AC_BE,
3086 AC_BK,
3087 AC_BK,
3088 AC_BE,
3089 AC_VI,
3090 AC_VI,
3091 AC_VO,
3092 AC_VO,
3093 };
3094
iwl_mvm_sta_tx_agg_start(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * sta,u16 tid,u16 * ssn)3095 int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
3096 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3097 {
3098 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3099 struct iwl_mvm_tid_data *tid_data;
3100 u16 normalized_ssn;
3101 u16 txq_id;
3102 int ret;
3103
3104 if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT))
3105 return -EINVAL;
3106
3107 if (mvmsta->tid_data[tid].state != IWL_AGG_QUEUED &&
3108 mvmsta->tid_data[tid].state != IWL_AGG_OFF) {
3109 IWL_ERR(mvm,
3110 "Start AGG when state is not IWL_AGG_QUEUED or IWL_AGG_OFF %d!\n",
3111 mvmsta->tid_data[tid].state);
3112 return -ENXIO;
3113 }
3114
3115 lockdep_assert_held(&mvm->mutex);
3116
3117 if (mvmsta->tid_data[tid].txq_id == IWL_MVM_INVALID_QUEUE &&
3118 iwl_mvm_has_new_tx_api(mvm)) {
3119 u8 ac = tid_to_mac80211_ac[tid];
3120
3121 ret = iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid);
3122 if (ret)
3123 return ret;
3124 }
3125
3126 spin_lock_bh(&mvmsta->lock);
3127
3128 /*
3129 * Note the possible cases:
3130 * 1. An enabled TXQ - TXQ needs to become agg'ed
3131 * 2. The TXQ hasn't yet been enabled, so find a free one and mark
3132 * it as reserved
3133 */
3134 txq_id = mvmsta->tid_data[tid].txq_id;
3135 if (txq_id == IWL_MVM_INVALID_QUEUE) {
3136 ret = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id,
3137 IWL_MVM_DQA_MIN_DATA_QUEUE,
3138 IWL_MVM_DQA_MAX_DATA_QUEUE);
3139 if (ret < 0) {
3140 IWL_ERR(mvm, "Failed to allocate agg queue\n");
3141 goto out;
3142 }
3143
3144 txq_id = ret;
3145
3146 /* TXQ hasn't yet been enabled, so mark it only as reserved */
3147 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED;
3148 } else if (WARN_ON(txq_id >= IWL_MAX_HW_QUEUES)) {
3149 ret = -ENXIO;
3150 IWL_ERR(mvm, "tid_id %d out of range (0, %d)!\n",
3151 tid, IWL_MAX_HW_QUEUES - 1);
3152 goto out;
3153
3154 } else if (unlikely(mvm->queue_info[txq_id].status ==
3155 IWL_MVM_QUEUE_SHARED)) {
3156 ret = -ENXIO;
3157 IWL_DEBUG_TX_QUEUES(mvm,
3158 "Can't start tid %d agg on shared queue!\n",
3159 tid);
3160 goto out;
3161 }
3162
3163 IWL_DEBUG_TX_QUEUES(mvm,
3164 "AGG for tid %d will be on queue #%d\n",
3165 tid, txq_id);
3166
3167 tid_data = &mvmsta->tid_data[tid];
3168 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
3169 tid_data->txq_id = txq_id;
3170 *ssn = tid_data->ssn;
3171
3172 IWL_DEBUG_TX_QUEUES(mvm,
3173 "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n",
3174 mvmsta->deflink.sta_id, tid, txq_id,
3175 tid_data->ssn,
3176 tid_data->next_reclaimed);
3177
3178 /*
3179 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need
3180 * to align the wrap around of ssn so we compare relevant values.
3181 */
3182 normalized_ssn = tid_data->ssn;
3183 if (mvm->trans->trans_cfg->gen2)
3184 normalized_ssn &= 0xff;
3185
3186 if (normalized_ssn == tid_data->next_reclaimed) {
3187 tid_data->state = IWL_AGG_STARTING;
3188 ret = IEEE80211_AMPDU_TX_START_IMMEDIATE;
3189 } else {
3190 tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA;
3191 ret = IEEE80211_AMPDU_TX_START_DELAY_ADDBA;
3192 }
3193
3194 out:
3195 spin_unlock_bh(&mvmsta->lock);
3196
3197 return ret;
3198 }
3199
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)3200 int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
3201 struct ieee80211_sta *sta, u16 tid, u16 buf_size,
3202 bool amsdu)
3203 {
3204 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3205 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
3206 unsigned int wdg_timeout =
3207 iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false);
3208 int queue, ret;
3209 bool alloc_queue = true;
3210 enum iwl_mvm_queue_status queue_status;
3211 u16 ssn;
3212
3213 struct iwl_trans_txq_scd_cfg cfg = {
3214 .sta_id = mvmsta->deflink.sta_id,
3215 .tid = tid,
3216 .frame_limit = buf_size,
3217 .aggregate = true,
3218 };
3219
3220 /*
3221 * When FW supports TLC_OFFLOAD, it also implements Tx aggregation
3222 * manager, so this function should never be called in this case.
3223 */
3224 if (WARN_ON_ONCE(iwl_mvm_has_tlc_offload(mvm)))
3225 return -EINVAL;
3226
3227 BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE)
3228 != IWL_MAX_TID_COUNT);
3229
3230 spin_lock_bh(&mvmsta->lock);
3231 ssn = tid_data->ssn;
3232 queue = tid_data->txq_id;
3233 tid_data->state = IWL_AGG_ON;
3234 mvmsta->agg_tids |= BIT(tid);
3235 tid_data->ssn = 0xffff;
3236 tid_data->amsdu_in_ampdu_allowed = amsdu;
3237 spin_unlock_bh(&mvmsta->lock);
3238
3239 if (iwl_mvm_has_new_tx_api(mvm)) {
3240 /*
3241 * If there is no queue for this tid, iwl_mvm_sta_tx_agg_start()
3242 * would have failed, so if we are here there is no need to
3243 * allocate a queue.
3244 * However, if aggregation size is different than the default
3245 * size, the scheduler should be reconfigured.
3246 * We cannot do this with the new TX API, so return unsupported
3247 * for now, until it will be offloaded to firmware..
3248 * Note that if SCD default value changes - this condition
3249 * should be updated as well.
3250 */
3251 if (buf_size < IWL_FRAME_LIMIT)
3252 return -ENOTSUPP;
3253
3254 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);
3255 if (ret)
3256 return -EIO;
3257 goto out;
3258 }
3259
3260 cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]];
3261
3262 queue_status = mvm->queue_info[queue].status;
3263
3264 /* Maybe there is no need to even alloc a queue... */
3265 if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY)
3266 alloc_queue = false;
3267
3268 /*
3269 * Only reconfig the SCD for the queue if the window size has
3270 * changed from current (become smaller)
3271 */
3272 if (!alloc_queue && buf_size < IWL_FRAME_LIMIT) {
3273 /*
3274 * If reconfiguring an existing queue, it first must be
3275 * drained
3276 */
3277 ret = iwl_trans_wait_tx_queues_empty(mvm->trans,
3278 BIT(queue));
3279 if (ret) {
3280 IWL_ERR(mvm,
3281 "Error draining queue before reconfig\n");
3282 return ret;
3283 }
3284
3285 ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo,
3286 mvmsta->deflink.sta_id, tid,
3287 buf_size, ssn);
3288 if (ret) {
3289 IWL_ERR(mvm,
3290 "Error reconfiguring TXQ #%d\n", queue);
3291 return ret;
3292 }
3293 }
3294
3295 if (alloc_queue)
3296 iwl_mvm_enable_txq(mvm, sta, queue, ssn,
3297 &cfg, wdg_timeout);
3298
3299 /* Send ADD_STA command to enable aggs only if the queue isn't shared */
3300 if (queue_status != IWL_MVM_QUEUE_SHARED) {
3301 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);
3302 if (ret)
3303 return -EIO;
3304 }
3305
3306 /* No need to mark as reserved */
3307 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY;
3308
3309 out:
3310 /*
3311 * Even though in theory the peer could have different
3312 * aggregation reorder buffer sizes for different sessions,
3313 * our ucode doesn't allow for that and has a global limit
3314 * for each station. Therefore, use the minimum of all the
3315 * aggregation sessions and our default value.
3316 */
3317 mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize =
3318 min(mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize,
3319 buf_size);
3320 mvmsta->deflink.lq_sta.rs_drv.lq.agg_frame_cnt_limit =
3321 mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize;
3322
3323 IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n",
3324 sta->addr, tid);
3325
3326 return iwl_mvm_send_lq_cmd(mvm, &mvmsta->deflink.lq_sta.rs_drv.lq);
3327 }
3328
iwl_mvm_unreserve_agg_queue(struct iwl_mvm * mvm,struct iwl_mvm_sta * mvmsta,struct iwl_mvm_tid_data * tid_data)3329 static void iwl_mvm_unreserve_agg_queue(struct iwl_mvm *mvm,
3330 struct iwl_mvm_sta *mvmsta,
3331 struct iwl_mvm_tid_data *tid_data)
3332 {
3333 u16 txq_id = tid_data->txq_id;
3334
3335 lockdep_assert_held(&mvm->mutex);
3336
3337 if (iwl_mvm_has_new_tx_api(mvm))
3338 return;
3339
3340 /*
3341 * The TXQ is marked as reserved only if no traffic came through yet
3342 * This means no traffic has been sent on this TID (agg'd or not), so
3343 * we no longer have use for the queue. Since it hasn't even been
3344 * allocated through iwl_mvm_enable_txq, so we can just mark it back as
3345 * free.
3346 */
3347 if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) {
3348 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE;
3349 tid_data->txq_id = IWL_MVM_INVALID_QUEUE;
3350 }
3351 }
3352
iwl_mvm_sta_tx_agg_stop(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * sta,u16 tid)3353 int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
3354 struct ieee80211_sta *sta, u16 tid)
3355 {
3356 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3357 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
3358 u16 txq_id;
3359 int err;
3360
3361 /*
3362 * If mac80211 is cleaning its state, then say that we finished since
3363 * our state has been cleared anyway.
3364 */
3365 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
3366 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
3367 return 0;
3368 }
3369
3370 spin_lock_bh(&mvmsta->lock);
3371
3372 txq_id = tid_data->txq_id;
3373
3374 IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n",
3375 mvmsta->deflink.sta_id, tid, txq_id,
3376 tid_data->state);
3377
3378 mvmsta->agg_tids &= ~BIT(tid);
3379
3380 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data);
3381
3382 switch (tid_data->state) {
3383 case IWL_AGG_ON:
3384 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
3385
3386 IWL_DEBUG_TX_QUEUES(mvm,
3387 "ssn = %d, next_recl = %d\n",
3388 tid_data->ssn, tid_data->next_reclaimed);
3389
3390 tid_data->ssn = 0xffff;
3391 tid_data->state = IWL_AGG_OFF;
3392 spin_unlock_bh(&mvmsta->lock);
3393
3394 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
3395
3396 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false);
3397 return 0;
3398 case IWL_AGG_STARTING:
3399 case IWL_EMPTYING_HW_QUEUE_ADDBA:
3400 /*
3401 * The agg session has been stopped before it was set up. This
3402 * can happen when the AddBA timer times out for example.
3403 */
3404
3405 /* No barriers since we are under mutex */
3406 lockdep_assert_held(&mvm->mutex);
3407
3408 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
3409 tid_data->state = IWL_AGG_OFF;
3410 err = 0;
3411 break;
3412 default:
3413 IWL_ERR(mvm,
3414 "Stopping AGG while state not ON or starting for %d on %d (%d)\n",
3415 mvmsta->deflink.sta_id, tid, tid_data->state);
3416 IWL_ERR(mvm,
3417 "\ttid_data->txq_id = %d\n", tid_data->txq_id);
3418 err = -EINVAL;
3419 }
3420
3421 spin_unlock_bh(&mvmsta->lock);
3422
3423 return err;
3424 }
3425
iwl_mvm_sta_tx_agg_flush(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * sta,u16 tid)3426 int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
3427 struct ieee80211_sta *sta, u16 tid)
3428 {
3429 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3430 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
3431 u16 txq_id;
3432 enum iwl_mvm_agg_state old_state;
3433
3434 /*
3435 * First set the agg state to OFF to avoid calling
3436 * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty.
3437 */
3438 spin_lock_bh(&mvmsta->lock);
3439 txq_id = tid_data->txq_id;
3440 IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n",
3441 mvmsta->deflink.sta_id, tid, txq_id,
3442 tid_data->state);
3443 old_state = tid_data->state;
3444 tid_data->state = IWL_AGG_OFF;
3445 mvmsta->agg_tids &= ~BIT(tid);
3446 spin_unlock_bh(&mvmsta->lock);
3447
3448 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data);
3449
3450 if (old_state >= IWL_AGG_ON) {
3451 iwl_mvm_drain_sta(mvm, mvmsta, true);
3452
3453 if (iwl_mvm_has_new_tx_api(mvm)) {
3454 if (iwl_mvm_flush_sta_tids(mvm, mvmsta->deflink.sta_id,
3455 BIT(tid)))
3456 IWL_ERR(mvm, "Couldn't flush the AGG queue\n");
3457 iwl_trans_wait_txq_empty(mvm->trans, txq_id);
3458 } else {
3459 if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id)))
3460 IWL_ERR(mvm, "Couldn't flush the AGG queue\n");
3461 iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(txq_id));
3462 }
3463
3464 iwl_mvm_drain_sta(mvm, mvmsta, false);
3465
3466 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false);
3467 }
3468
3469 return 0;
3470 }
3471
iwl_mvm_set_fw_key_idx(struct iwl_mvm * mvm)3472 static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm)
3473 {
3474 int i, max = -1, max_offs = -1;
3475
3476 lockdep_assert_held(&mvm->mutex);
3477
3478 /* Pick the unused key offset with the highest 'deleted'
3479 * counter. Every time a key is deleted, all the counters
3480 * are incremented and the one that was just deleted is
3481 * reset to zero. Thus, the highest counter is the one
3482 * that was deleted longest ago. Pick that one.
3483 */
3484 for (i = 0; i < STA_KEY_MAX_NUM; i++) {
3485 if (test_bit(i, mvm->fw_key_table))
3486 continue;
3487 if (mvm->fw_key_deleted[i] > max) {
3488 max = mvm->fw_key_deleted[i];
3489 max_offs = i;
3490 }
3491 }
3492
3493 if (max_offs < 0)
3494 return STA_KEY_IDX_INVALID;
3495
3496 return max_offs;
3497 }
3498
iwl_mvm_get_key_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * sta)3499 static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm,
3500 struct ieee80211_vif *vif,
3501 struct ieee80211_sta *sta)
3502 {
3503 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3504
3505 if (sta)
3506 return iwl_mvm_sta_from_mac80211(sta);
3507
3508 /*
3509 * The device expects GTKs for station interfaces to be
3510 * installed as GTKs for the AP station. If we have no
3511 * station ID, then use AP's station ID.
3512 */
3513 if (vif->type == NL80211_IFTYPE_STATION &&
3514 mvmvif->deflink.ap_sta_id != IWL_MVM_INVALID_STA) {
3515 u8 sta_id = mvmvif->deflink.ap_sta_id;
3516
3517 sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id],
3518 lockdep_is_held(&mvm->mutex));
3519
3520 /*
3521 * It is possible that the 'sta' parameter is NULL,
3522 * for example when a GTK is removed - the sta_id will then
3523 * be the AP ID, and no station was passed by mac80211.
3524 */
3525 if (IS_ERR_OR_NULL(sta))
3526 return NULL;
3527
3528 return iwl_mvm_sta_from_mac80211(sta);
3529 }
3530
3531 return NULL;
3532 }
3533
iwl_mvm_pn_cmp(const u8 * pn1,const u8 * pn2,int len)3534 static int iwl_mvm_pn_cmp(const u8 *pn1, const u8 *pn2, int len)
3535 {
3536 int i;
3537
3538 for (i = len - 1; i >= 0; i--) {
3539 if (pn1[i] > pn2[i])
3540 return 1;
3541 if (pn1[i] < pn2[i])
3542 return -1;
3543 }
3544
3545 return 0;
3546 }
3547
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)3548 static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm,
3549 u32 sta_id,
3550 struct ieee80211_key_conf *key, bool mcast,
3551 u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags,
3552 u8 key_offset, bool mfp)
3553 {
3554 union {
3555 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1;
3556 struct iwl_mvm_add_sta_key_cmd cmd;
3557 } u = {};
3558 __le16 key_flags;
3559 int ret;
3560 u32 status;
3561 u16 keyidx;
3562 u64 pn = 0;
3563 int i, size;
3564 bool new_api = fw_has_api(&mvm->fw->ucode_capa,
3565 IWL_UCODE_TLV_API_TKIP_MIC_KEYS);
3566 int api_ver = iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA_KEY,
3567 new_api ? 2 : 1);
3568
3569 if (sta_id == IWL_MVM_INVALID_STA)
3570 return -EINVAL;
3571
3572 keyidx = (key->keyidx << STA_KEY_FLG_KEYID_POS) &
3573 STA_KEY_FLG_KEYID_MSK;
3574 key_flags = cpu_to_le16(keyidx);
3575 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP);
3576
3577 switch (key->cipher) {
3578 case WLAN_CIPHER_SUITE_TKIP:
3579 key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP);
3580 if (api_ver >= 2) {
3581 memcpy((void *)&u.cmd.tx_mic_key,
3582 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
3583 IWL_MIC_KEY_SIZE);
3584
3585 memcpy((void *)&u.cmd.rx_mic_key,
3586 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
3587 IWL_MIC_KEY_SIZE);
3588 pn = atomic64_read(&key->tx_pn);
3589
3590 } else {
3591 u.cmd_v1.tkip_rx_tsc_byte2 = tkip_iv32;
3592 for (i = 0; i < 5; i++)
3593 u.cmd_v1.tkip_rx_ttak[i] =
3594 cpu_to_le16(tkip_p1k[i]);
3595 }
3596 memcpy(u.cmd.common.key, key->key, key->keylen);
3597 break;
3598 case WLAN_CIPHER_SUITE_CCMP:
3599 key_flags |= cpu_to_le16(STA_KEY_FLG_CCM);
3600 memcpy(u.cmd.common.key, key->key, key->keylen);
3601 if (api_ver >= 2)
3602 pn = atomic64_read(&key->tx_pn);
3603 break;
3604 case WLAN_CIPHER_SUITE_WEP104:
3605 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES);
3606 fallthrough;
3607 case WLAN_CIPHER_SUITE_WEP40:
3608 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP);
3609 memcpy(u.cmd.common.key + 3, key->key, key->keylen);
3610 break;
3611 case WLAN_CIPHER_SUITE_GCMP_256:
3612 key_flags |= cpu_to_le16(STA_KEY_FLG_KEY_32BYTES);
3613 fallthrough;
3614 case WLAN_CIPHER_SUITE_GCMP:
3615 key_flags |= cpu_to_le16(STA_KEY_FLG_GCMP);
3616 memcpy(u.cmd.common.key, key->key, key->keylen);
3617 if (api_ver >= 2)
3618 pn = atomic64_read(&key->tx_pn);
3619 break;
3620 default:
3621 key_flags |= cpu_to_le16(STA_KEY_FLG_EXT);
3622 memcpy(u.cmd.common.key, key->key, key->keylen);
3623 }
3624
3625 if (mcast)
3626 key_flags |= cpu_to_le16(STA_KEY_MULTICAST);
3627 if (mfp)
3628 key_flags |= cpu_to_le16(STA_KEY_MFP);
3629
3630 u.cmd.common.key_offset = key_offset;
3631 u.cmd.common.key_flags = key_flags;
3632 u.cmd.common.sta_id = sta_id;
3633
3634 if (key->cipher == WLAN_CIPHER_SUITE_TKIP)
3635 i = 0;
3636 else
3637 i = -1;
3638
3639 for (; i < IEEE80211_NUM_TIDS; i++) {
3640 struct ieee80211_key_seq seq = {};
3641 u8 _rx_pn[IEEE80211_MAX_PN_LEN] = {}, *rx_pn = _rx_pn;
3642 int rx_pn_len = 8;
3643 /* there's a hole at 2/3 in FW format depending on version */
3644 int hole = api_ver >= 3 ? 0 : 2;
3645
3646 ieee80211_get_key_rx_seq(key, i, &seq);
3647
3648 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) {
3649 rx_pn[0] = seq.tkip.iv16;
3650 rx_pn[1] = seq.tkip.iv16 >> 8;
3651 rx_pn[2 + hole] = seq.tkip.iv32;
3652 rx_pn[3 + hole] = seq.tkip.iv32 >> 8;
3653 rx_pn[4 + hole] = seq.tkip.iv32 >> 16;
3654 rx_pn[5 + hole] = seq.tkip.iv32 >> 24;
3655 } else if (key_flags & cpu_to_le16(STA_KEY_FLG_EXT)) {
3656 rx_pn = seq.hw.seq;
3657 rx_pn_len = seq.hw.seq_len;
3658 } else {
3659 rx_pn[0] = seq.ccmp.pn[0];
3660 rx_pn[1] = seq.ccmp.pn[1];
3661 rx_pn[2 + hole] = seq.ccmp.pn[2];
3662 rx_pn[3 + hole] = seq.ccmp.pn[3];
3663 rx_pn[4 + hole] = seq.ccmp.pn[4];
3664 rx_pn[5 + hole] = seq.ccmp.pn[5];
3665 }
3666
3667 if (iwl_mvm_pn_cmp(rx_pn, (u8 *)&u.cmd.common.rx_secur_seq_cnt,
3668 rx_pn_len) > 0)
3669 memcpy(&u.cmd.common.rx_secur_seq_cnt, rx_pn,
3670 rx_pn_len);
3671 }
3672
3673 if (api_ver >= 2) {
3674 u.cmd.transmit_seq_cnt = cpu_to_le64(pn);
3675 size = sizeof(u.cmd);
3676 } else {
3677 size = sizeof(u.cmd_v1);
3678 }
3679
3680 status = ADD_STA_SUCCESS;
3681 if (cmd_flags & CMD_ASYNC)
3682 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, size,
3683 &u.cmd);
3684 else
3685 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size,
3686 &u.cmd, &status);
3687
3688 switch (status) {
3689 case ADD_STA_SUCCESS:
3690 IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n");
3691 break;
3692 default:
3693 ret = -EIO;
3694 IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n");
3695 break;
3696 }
3697
3698 return ret;
3699 }
3700
iwl_mvm_send_sta_igtk(struct iwl_mvm * mvm,struct ieee80211_key_conf * keyconf,u8 sta_id,bool remove_key)3701 static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm,
3702 struct ieee80211_key_conf *keyconf,
3703 u8 sta_id, bool remove_key)
3704 {
3705 struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {};
3706
3707 /* verify the key details match the required command's expectations */
3708 if (WARN_ON((keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) ||
3709 (keyconf->keyidx != 4 && keyconf->keyidx != 5 &&
3710 keyconf->keyidx != 6 && keyconf->keyidx != 7) ||
3711 (keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC &&
3712 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_128 &&
3713 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_256)))
3714 return -EINVAL;
3715
3716 if (WARN_ON(!iwl_mvm_has_new_rx_api(mvm) &&
3717 keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC))
3718 return -EINVAL;
3719
3720 igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx);
3721 igtk_cmd.sta_id = cpu_to_le32(sta_id);
3722
3723 if (remove_key) {
3724 /* This is a valid situation for IGTK */
3725 if (sta_id == IWL_MVM_INVALID_STA)
3726 return 0;
3727
3728 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID);
3729 } else {
3730 struct ieee80211_key_seq seq;
3731 const u8 *pn;
3732
3733 switch (keyconf->cipher) {
3734 case WLAN_CIPHER_SUITE_AES_CMAC:
3735 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM);
3736 break;
3737 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
3738 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
3739 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_GCMP);
3740 break;
3741 default:
3742 return -EINVAL;
3743 }
3744
3745 memcpy(igtk_cmd.igtk, keyconf->key, keyconf->keylen);
3746 if (keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
3747 igtk_cmd.ctrl_flags |=
3748 cpu_to_le32(STA_KEY_FLG_KEY_32BYTES);
3749 ieee80211_get_key_rx_seq(keyconf, 0, &seq);
3750 pn = seq.aes_cmac.pn;
3751 igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) |
3752 ((u64) pn[4] << 8) |
3753 ((u64) pn[3] << 16) |
3754 ((u64) pn[2] << 24) |
3755 ((u64) pn[1] << 32) |
3756 ((u64) pn[0] << 40));
3757 }
3758
3759 IWL_DEBUG_INFO(mvm, "%s %sIGTK (%d) for sta %u\n",
3760 remove_key ? "removing" : "installing",
3761 keyconf->keyidx >= 6 ? "B" : "",
3762 keyconf->keyidx, igtk_cmd.sta_id);
3763
3764 if (!iwl_mvm_has_new_rx_api(mvm)) {
3765 struct iwl_mvm_mgmt_mcast_key_cmd_v1 igtk_cmd_v1 = {
3766 .ctrl_flags = igtk_cmd.ctrl_flags,
3767 .key_id = igtk_cmd.key_id,
3768 .sta_id = igtk_cmd.sta_id,
3769 .receive_seq_cnt = igtk_cmd.receive_seq_cnt
3770 };
3771
3772 memcpy(igtk_cmd_v1.igtk, igtk_cmd.igtk,
3773 ARRAY_SIZE(igtk_cmd_v1.igtk));
3774 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0,
3775 sizeof(igtk_cmd_v1), &igtk_cmd_v1);
3776 }
3777 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0,
3778 sizeof(igtk_cmd), &igtk_cmd);
3779 }
3780
3781
iwl_mvm_get_mac_addr(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * sta)3782 static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm,
3783 struct ieee80211_vif *vif,
3784 struct ieee80211_sta *sta)
3785 {
3786 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3787
3788 if (sta)
3789 return sta->addr;
3790
3791 if (vif->type == NL80211_IFTYPE_STATION &&
3792 mvmvif->deflink.ap_sta_id != IWL_MVM_INVALID_STA) {
3793 u8 sta_id = mvmvif->deflink.ap_sta_id;
3794 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
3795 lockdep_is_held(&mvm->mutex));
3796 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
3797 return NULL;
3798
3799 return sta->addr;
3800 }
3801
3802
3803 return NULL;
3804 }
3805
__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)3806 static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm,
3807 struct ieee80211_vif *vif,
3808 struct ieee80211_sta *sta,
3809 struct ieee80211_key_conf *keyconf,
3810 u8 key_offset,
3811 bool mcast)
3812 {
3813 const u8 *addr;
3814 struct ieee80211_key_seq seq;
3815 u16 p1k[5];
3816 u32 sta_id;
3817 bool mfp = false;
3818
3819 if (sta) {
3820 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3821
3822 sta_id = mvm_sta->deflink.sta_id;
3823 mfp = sta->mfp;
3824 } else if (vif->type == NL80211_IFTYPE_AP &&
3825 !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
3826 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3827
3828 sta_id = mvmvif->deflink.mcast_sta.sta_id;
3829 } else {
3830 IWL_ERR(mvm, "Failed to find station id\n");
3831 return -EINVAL;
3832 }
3833
3834 if (keyconf->cipher == WLAN_CIPHER_SUITE_TKIP) {
3835 addr = iwl_mvm_get_mac_addr(mvm, vif, sta);
3836 if (!addr) {
3837 IWL_ERR(mvm, "Failed to find mac address\n");
3838 return -EINVAL;
3839 }
3840
3841 /* get phase 1 key from mac80211 */
3842 ieee80211_get_key_rx_seq(keyconf, 0, &seq);
3843 ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k);
3844
3845 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast,
3846 seq.tkip.iv32, p1k, 0, key_offset,
3847 mfp);
3848 }
3849
3850 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast,
3851 0, NULL, 0, key_offset, mfp);
3852 }
3853
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)3854 int iwl_mvm_set_sta_key(struct iwl_mvm *mvm,
3855 struct ieee80211_vif *vif,
3856 struct ieee80211_sta *sta,
3857 struct ieee80211_key_conf *keyconf,
3858 u8 key_offset)
3859 {
3860 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
3861 struct iwl_mvm_sta *mvm_sta;
3862 u8 sta_id = IWL_MVM_INVALID_STA;
3863 int ret;
3864 static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0};
3865
3866 lockdep_assert_held(&mvm->mutex);
3867
3868 if (vif->type != NL80211_IFTYPE_AP ||
3869 keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
3870 /* Get the station id from the mvm local station table */
3871 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta);
3872 if (!mvm_sta) {
3873 IWL_ERR(mvm, "Failed to find station\n");
3874 return -EINVAL;
3875 }
3876 sta_id = mvm_sta->deflink.sta_id;
3877
3878 /*
3879 * It is possible that the 'sta' parameter is NULL, and thus
3880 * there is a need to retrieve the sta from the local station
3881 * table.
3882 */
3883 if (!sta) {
3884 sta = rcu_dereference_protected(
3885 mvm->fw_id_to_mac_id[sta_id],
3886 lockdep_is_held(&mvm->mutex));
3887 if (IS_ERR_OR_NULL(sta)) {
3888 IWL_ERR(mvm, "Invalid station id\n");
3889 return -EINVAL;
3890 }
3891 }
3892
3893 if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif))
3894 return -EINVAL;
3895 } else {
3896 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3897
3898 sta_id = mvmvif->deflink.mcast_sta.sta_id;
3899 }
3900
3901 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
3902 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
3903 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) {
3904 ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false);
3905 goto end;
3906 }
3907
3908 /* If the key_offset is not pre-assigned, we need to find a
3909 * new offset to use. In normal cases, the offset is not
3910 * pre-assigned, but during HW_RESTART we want to reuse the
3911 * same indices, so we pass them when this function is called.
3912 *
3913 * In D3 entry, we need to hardcoded the indices (because the
3914 * firmware hardcodes the PTK offset to 0). In this case, we
3915 * need to make sure we don't overwrite the hw_key_idx in the
3916 * keyconf structure, because otherwise we cannot configure
3917 * the original ones back when resuming.
3918 */
3919 if (key_offset == STA_KEY_IDX_INVALID) {
3920 key_offset = iwl_mvm_set_fw_key_idx(mvm);
3921 if (key_offset == STA_KEY_IDX_INVALID)
3922 return -ENOSPC;
3923 keyconf->hw_key_idx = key_offset;
3924 }
3925
3926 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast);
3927 if (ret)
3928 goto end;
3929
3930 /*
3931 * For WEP, the same key is used for multicast and unicast. Upload it
3932 * again, using the same key offset, and now pointing the other one
3933 * to the same key slot (offset).
3934 * If this fails, remove the original as well.
3935 */
3936 if ((keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 ||
3937 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) &&
3938 sta) {
3939 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf,
3940 key_offset, !mcast);
3941 if (ret) {
3942 __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast);
3943 goto end;
3944 }
3945 }
3946
3947 __set_bit(key_offset, mvm->fw_key_table);
3948
3949 end:
3950 IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n",
3951 keyconf->cipher, keyconf->keylen, keyconf->keyidx,
3952 sta ? sta->addr : zero_addr, ret);
3953 return ret;
3954 }
3955
iwl_mvm_remove_sta_key(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * keyconf)3956 int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm,
3957 struct ieee80211_vif *vif,
3958 struct ieee80211_sta *sta,
3959 struct ieee80211_key_conf *keyconf)
3960 {
3961 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
3962 struct iwl_mvm_sta *mvm_sta;
3963 u8 sta_id = IWL_MVM_INVALID_STA;
3964 int ret, i;
3965
3966 lockdep_assert_held(&mvm->mutex);
3967
3968 /* Get the station from the mvm local station table */
3969 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta);
3970 if (mvm_sta)
3971 sta_id = mvm_sta->deflink.sta_id;
3972 else if (!sta && vif->type == NL80211_IFTYPE_AP && mcast)
3973 sta_id = iwl_mvm_vif_from_mac80211(vif)->deflink.mcast_sta.sta_id;
3974
3975
3976 IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n",
3977 keyconf->keyidx, sta_id);
3978
3979 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
3980 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
3981 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
3982 return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true);
3983
3984 if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) {
3985 IWL_ERR(mvm, "offset %d not used in fw key table.\n",
3986 keyconf->hw_key_idx);
3987 return -ENOENT;
3988 }
3989
3990 /* track which key was deleted last */
3991 for (i = 0; i < STA_KEY_MAX_NUM; i++) {
3992 if (mvm->fw_key_deleted[i] < U8_MAX)
3993 mvm->fw_key_deleted[i]++;
3994 }
3995 mvm->fw_key_deleted[keyconf->hw_key_idx] = 0;
3996
3997 if (sta && !mvm_sta) {
3998 IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n");
3999 return 0;
4000 }
4001
4002 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast);
4003 if (ret)
4004 return ret;
4005
4006 /* delete WEP key twice to get rid of (now useless) offset */
4007 if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 ||
4008 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104)
4009 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast);
4010
4011 return ret;
4012 }
4013
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)4014 void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm,
4015 struct ieee80211_vif *vif,
4016 struct ieee80211_key_conf *keyconf,
4017 struct ieee80211_sta *sta, u32 iv32,
4018 u16 *phase1key)
4019 {
4020 struct iwl_mvm_sta *mvm_sta;
4021 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
4022 bool mfp = sta ? sta->mfp : false;
4023
4024 rcu_read_lock();
4025
4026 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta);
4027 if (WARN_ON_ONCE(!mvm_sta))
4028 goto unlock;
4029 iwl_mvm_send_sta_key(mvm, mvm_sta->deflink.sta_id, keyconf, mcast,
4030 iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx,
4031 mfp);
4032
4033 unlock:
4034 rcu_read_unlock();
4035 }
4036
iwl_mvm_sta_modify_ps_wake(struct iwl_mvm * mvm,struct ieee80211_sta * sta)4037 void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm,
4038 struct ieee80211_sta *sta)
4039 {
4040 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
4041 struct iwl_mvm_add_sta_cmd cmd = {
4042 .add_modify = STA_MODE_MODIFY,
4043 .sta_id = mvmsta->deflink.sta_id,
4044 .station_flags_msk = cpu_to_le32(STA_FLG_PS),
4045 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
4046 };
4047 int ret;
4048
4049 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
4050 iwl_mvm_add_sta_cmd_size(mvm), &cmd);
4051 if (ret)
4052 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
4053 }
4054
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)4055 void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm,
4056 struct ieee80211_sta *sta,
4057 enum ieee80211_frame_release_type reason,
4058 u16 cnt, u16 tids, bool more_data,
4059 bool single_sta_queue)
4060 {
4061 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
4062 struct iwl_mvm_add_sta_cmd cmd = {
4063 .add_modify = STA_MODE_MODIFY,
4064 .sta_id = mvmsta->deflink.sta_id,
4065 .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT,
4066 .sleep_tx_count = cpu_to_le16(cnt),
4067 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
4068 };
4069 int tid, ret;
4070 unsigned long _tids = tids;
4071
4072 /* convert TIDs to ACs - we don't support TSPEC so that's OK
4073 * Note that this field is reserved and unused by firmware not
4074 * supporting GO uAPSD, so it's safe to always do this.
4075 */
4076 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT)
4077 cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]);
4078
4079 /* If we're releasing frames from aggregation or dqa queues then check
4080 * if all the queues that we're releasing frames from, combined, have:
4081 * - more frames than the service period, in which case more_data
4082 * needs to be set
4083 * - fewer than 'cnt' frames, in which case we need to adjust the
4084 * firmware command (but do that unconditionally)
4085 */
4086 if (single_sta_queue) {
4087 int remaining = cnt;
4088 int sleep_tx_count;
4089
4090 spin_lock_bh(&mvmsta->lock);
4091 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) {
4092 struct iwl_mvm_tid_data *tid_data;
4093 u16 n_queued;
4094
4095 tid_data = &mvmsta->tid_data[tid];
4096
4097 n_queued = iwl_mvm_tid_queued(mvm, tid_data);
4098 if (n_queued > remaining) {
4099 more_data = true;
4100 remaining = 0;
4101 break;
4102 }
4103 remaining -= n_queued;
4104 }
4105 sleep_tx_count = cnt - remaining;
4106 if (reason == IEEE80211_FRAME_RELEASE_UAPSD)
4107 mvmsta->sleep_tx_count = sleep_tx_count;
4108 spin_unlock_bh(&mvmsta->lock);
4109
4110 cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count);
4111 if (WARN_ON(cnt - remaining == 0)) {
4112 ieee80211_sta_eosp(sta);
4113 return;
4114 }
4115 }
4116
4117 /* Note: this is ignored by firmware not supporting GO uAPSD */
4118 if (more_data)
4119 cmd.sleep_state_flags |= STA_SLEEP_STATE_MOREDATA;
4120
4121 if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) {
4122 mvmsta->next_status_eosp = true;
4123 cmd.sleep_state_flags |= STA_SLEEP_STATE_PS_POLL;
4124 } else {
4125 cmd.sleep_state_flags |= STA_SLEEP_STATE_UAPSD;
4126 }
4127
4128 /* block the Tx queues until the FW updated the sleep Tx count */
4129 iwl_trans_block_txq_ptrs(mvm->trans, true);
4130
4131 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA,
4132 CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK,
4133 iwl_mvm_add_sta_cmd_size(mvm), &cmd);
4134 if (ret)
4135 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
4136 }
4137
iwl_mvm_rx_eosp_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)4138 void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm,
4139 struct iwl_rx_cmd_buffer *rxb)
4140 {
4141 struct iwl_rx_packet *pkt = rxb_addr(rxb);
4142 struct iwl_mvm_eosp_notification *notif = (void *)pkt->data;
4143 struct ieee80211_sta *sta;
4144 u32 sta_id = le32_to_cpu(notif->sta_id);
4145
4146 if (WARN_ON_ONCE(sta_id >= mvm->fw->ucode_capa.num_stations))
4147 return;
4148
4149 rcu_read_lock();
4150 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
4151 if (!IS_ERR_OR_NULL(sta))
4152 ieee80211_sta_eosp(sta);
4153 rcu_read_unlock();
4154 }
4155
iwl_mvm_sta_modify_disable_tx(struct iwl_mvm * mvm,struct iwl_mvm_sta * mvmsta,bool disable)4156 void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm,
4157 struct iwl_mvm_sta *mvmsta,
4158 bool disable)
4159 {
4160 struct iwl_mvm_add_sta_cmd cmd = {
4161 .add_modify = STA_MODE_MODIFY,
4162 .sta_id = mvmsta->deflink.sta_id,
4163 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0,
4164 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX),
4165 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
4166 };
4167 int ret;
4168
4169 if (mvm->mld_api_is_used) {
4170 iwl_mvm_mld_sta_modify_disable_tx(mvm, mvmsta, disable);
4171 return;
4172 }
4173
4174 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
4175 iwl_mvm_add_sta_cmd_size(mvm), &cmd);
4176 if (ret)
4177 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
4178 }
4179
iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm * mvm,struct ieee80211_sta * sta,bool disable)4180 void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm,
4181 struct ieee80211_sta *sta,
4182 bool disable)
4183 {
4184 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
4185
4186 if (mvm->mld_api_is_used) {
4187 iwl_mvm_mld_sta_modify_disable_tx_ap(mvm, sta, disable);
4188 return;
4189 }
4190
4191 spin_lock_bh(&mvm_sta->lock);
4192
4193 if (mvm_sta->disable_tx == disable) {
4194 spin_unlock_bh(&mvm_sta->lock);
4195 return;
4196 }
4197
4198 mvm_sta->disable_tx = disable;
4199
4200 /*
4201 * If sta PS state is handled by mac80211, tell it to start/stop
4202 * queuing tx for this station.
4203 */
4204 if (!ieee80211_hw_check(mvm->hw, AP_LINK_PS))
4205 ieee80211_sta_block_awake(mvm->hw, sta, disable);
4206
4207 iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable);
4208
4209 spin_unlock_bh(&mvm_sta->lock);
4210 }
4211
iwl_mvm_int_sta_modify_disable_tx(struct iwl_mvm * mvm,struct iwl_mvm_vif * mvmvif,struct iwl_mvm_int_sta * sta,bool disable)4212 static void iwl_mvm_int_sta_modify_disable_tx(struct iwl_mvm *mvm,
4213 struct iwl_mvm_vif *mvmvif,
4214 struct iwl_mvm_int_sta *sta,
4215 bool disable)
4216 {
4217 u32 id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color);
4218 struct iwl_mvm_add_sta_cmd cmd = {
4219 .add_modify = STA_MODE_MODIFY,
4220 .sta_id = sta->sta_id,
4221 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0,
4222 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX),
4223 .mac_id_n_color = cpu_to_le32(id),
4224 };
4225 int ret;
4226
4227 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
4228 iwl_mvm_add_sta_cmd_size(mvm), &cmd);
4229 if (ret)
4230 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
4231 }
4232
iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm * mvm,struct iwl_mvm_vif * mvmvif,bool disable)4233 void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm,
4234 struct iwl_mvm_vif *mvmvif,
4235 bool disable)
4236 {
4237 struct ieee80211_sta *sta;
4238 struct iwl_mvm_sta *mvm_sta;
4239 int i;
4240
4241 if (mvm->mld_api_is_used) {
4242 iwl_mvm_mld_modify_all_sta_disable_tx(mvm, mvmvif, disable);
4243 return;
4244 }
4245
4246 rcu_read_lock();
4247
4248 /* Block/unblock all the stations of the given mvmvif */
4249 for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) {
4250 sta = rcu_dereference(mvm->fw_id_to_mac_id[i]);
4251 if (IS_ERR_OR_NULL(sta))
4252 continue;
4253
4254 mvm_sta = iwl_mvm_sta_from_mac80211(sta);
4255 if (mvm_sta->mac_id_n_color !=
4256 FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color))
4257 continue;
4258
4259 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable);
4260 }
4261
4262 rcu_read_unlock();
4263
4264 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
4265 return;
4266
4267 /* Need to block/unblock also multicast station */
4268 if (mvmvif->deflink.mcast_sta.sta_id != IWL_MVM_INVALID_STA)
4269 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif,
4270 &mvmvif->deflink.mcast_sta,
4271 disable);
4272
4273 /*
4274 * Only unblock the broadcast station (FW blocks it for immediate
4275 * quiet, not the driver)
4276 */
4277 if (!disable && mvmvif->deflink.bcast_sta.sta_id != IWL_MVM_INVALID_STA)
4278 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif,
4279 &mvmvif->deflink.bcast_sta,
4280 disable);
4281 }
4282
iwl_mvm_csa_client_absent(struct iwl_mvm * mvm,struct ieee80211_vif * vif)4283 void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
4284 {
4285 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4286 struct iwl_mvm_sta *mvmsta;
4287
4288 rcu_read_lock();
4289
4290 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->deflink.ap_sta_id);
4291
4292 if (mvmsta)
4293 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true);
4294
4295 rcu_read_unlock();
4296 }
4297
iwl_mvm_tid_queued(struct iwl_mvm * mvm,struct iwl_mvm_tid_data * tid_data)4298 u16 iwl_mvm_tid_queued(struct iwl_mvm *mvm, struct iwl_mvm_tid_data *tid_data)
4299 {
4300 u16 sn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
4301
4302 /*
4303 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need
4304 * to align the wrap around of ssn so we compare relevant values.
4305 */
4306 if (mvm->trans->trans_cfg->gen2)
4307 sn &= 0xff;
4308
4309 return ieee80211_sn_sub(sn, tid_data->next_reclaimed);
4310 }
4311
4312 #if defined(__linux__)
iwl_mvm_add_pasn_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_mvm_int_sta * sta,u8 * addr,u32 cipher,u8 * key,u32 key_len)4313 int iwl_mvm_add_pasn_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
4314 struct iwl_mvm_int_sta *sta, u8 *addr, u32 cipher,
4315 u8 *key, u32 key_len)
4316 {
4317 int ret;
4318 u16 queue;
4319 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4320 struct ieee80211_key_conf *keyconf;
4321 unsigned int wdg_timeout =
4322 iwl_mvm_get_wd_timeout(mvm, vif, false, false);
4323 bool mld = iwl_mvm_has_mld_api(mvm->fw);
4324 u32 type = mld ? STATION_TYPE_PEER : IWL_STA_LINK;
4325
4326 ret = iwl_mvm_allocate_int_sta(mvm, sta, 0,
4327 NL80211_IFTYPE_UNSPECIFIED, type);
4328 if (ret)
4329 return ret;
4330
4331 if (mld)
4332 ret = iwl_mvm_mld_add_int_sta_with_queue(mvm, sta, addr,
4333 mvmvif->deflink.fw_link_id,
4334 &queue,
4335 IWL_MAX_TID_COUNT,
4336 &wdg_timeout);
4337 else
4338 ret = iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id,
4339 mvmvif->color, addr, sta,
4340 &queue,
4341 IWL_MVM_TX_FIFO_BE);
4342 if (ret)
4343 goto out;
4344
4345 keyconf = kzalloc(sizeof(*keyconf) + key_len, GFP_KERNEL);
4346 if (!keyconf) {
4347 ret = -ENOBUFS;
4348 goto out;
4349 }
4350
4351 keyconf->cipher = cipher;
4352 memcpy(keyconf->key, key, key_len);
4353 keyconf->keylen = key_len;
4354 keyconf->flags = IEEE80211_KEY_FLAG_PAIRWISE;
4355
4356 if (mld) {
4357 /* The MFP flag is set according to the station mfp field. Since
4358 * we don't have a station, set it manually.
4359 */
4360 u32 key_flags =
4361 iwl_mvm_get_sec_flags(mvm, vif, NULL, keyconf) |
4362 IWL_SEC_KEY_FLAG_MFP;
4363 u32 sta_mask = BIT(sta->sta_id);
4364
4365 ret = iwl_mvm_mld_send_key(mvm, sta_mask, key_flags, keyconf);
4366 } else {
4367 ret = iwl_mvm_send_sta_key(mvm, sta->sta_id, keyconf, false,
4368 0, NULL, 0, 0, true);
4369 }
4370
4371 kfree(keyconf);
4372 return 0;
4373 out:
4374 iwl_mvm_dealloc_int_sta(mvm, sta);
4375 return ret;
4376 }
4377 #endif
4378
iwl_mvm_cancel_channel_switch(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u32 id)4379 void iwl_mvm_cancel_channel_switch(struct iwl_mvm *mvm,
4380 struct ieee80211_vif *vif,
4381 u32 id)
4382 {
4383 struct iwl_cancel_channel_switch_cmd cancel_channel_switch_cmd = {
4384 .id = cpu_to_le32(id),
4385 };
4386 int ret;
4387
4388 ret = iwl_mvm_send_cmd_pdu(mvm,
4389 WIDE_ID(MAC_CONF_GROUP, CANCEL_CHANNEL_SWITCH_CMD),
4390 CMD_ASYNC,
4391 sizeof(cancel_channel_switch_cmd),
4392 &cancel_channel_switch_cmd);
4393 if (ret)
4394 IWL_ERR(mvm, "Failed to cancel the channel switch\n");
4395 }
4396