1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /*
3 * Copyright (C) 2012-2014, 2018-2024 Intel Corporation
4 * Copyright (C) 2013-2014 Intel Mobile Communications GmbH
5 * Copyright (C) 2015-2017 Intel Deutschland GmbH
6 */
7 #include <linux/etherdevice.h>
8 #include <linux/crc32.h>
9 #include <net/mac80211.h>
10 #include "iwl-io.h"
11 #include "iwl-prph.h"
12 #include "fw-api.h"
13 #include "mvm.h"
14 #include "time-event.h"
15
16 const u8 iwl_mvm_ac_to_tx_fifo[] = {
17 IWL_MVM_TX_FIFO_VO,
18 IWL_MVM_TX_FIFO_VI,
19 IWL_MVM_TX_FIFO_BE,
20 IWL_MVM_TX_FIFO_BK,
21 };
22
23 const u8 iwl_mvm_ac_to_gen2_tx_fifo[] = {
24 IWL_GEN2_EDCA_TX_FIFO_VO,
25 IWL_GEN2_EDCA_TX_FIFO_VI,
26 IWL_GEN2_EDCA_TX_FIFO_BE,
27 IWL_GEN2_EDCA_TX_FIFO_BK,
28 IWL_GEN2_TRIG_TX_FIFO_VO,
29 IWL_GEN2_TRIG_TX_FIFO_VI,
30 IWL_GEN2_TRIG_TX_FIFO_BE,
31 IWL_GEN2_TRIG_TX_FIFO_BK,
32 };
33
34 const u8 iwl_mvm_ac_to_bz_tx_fifo[] = {
35 IWL_BZ_EDCA_TX_FIFO_VO,
36 IWL_BZ_EDCA_TX_FIFO_VI,
37 IWL_BZ_EDCA_TX_FIFO_BE,
38 IWL_BZ_EDCA_TX_FIFO_BK,
39 IWL_BZ_TRIG_TX_FIFO_VO,
40 IWL_BZ_TRIG_TX_FIFO_VI,
41 IWL_BZ_TRIG_TX_FIFO_BE,
42 IWL_BZ_TRIG_TX_FIFO_BK,
43 };
44
45 struct iwl_mvm_mac_iface_iterator_data {
46 struct iwl_mvm *mvm;
47 struct ieee80211_vif *vif;
48 unsigned long available_mac_ids[BITS_TO_LONGS(NUM_MAC_INDEX_DRIVER)];
49 unsigned long available_tsf_ids[BITS_TO_LONGS(NUM_TSF_IDS)];
50 enum iwl_tsf_id preferred_tsf;
51 bool found_vif;
52 };
53
iwl_mvm_mac_tsf_id_iter(void * _data,u8 * mac,struct ieee80211_vif * vif)54 static void iwl_mvm_mac_tsf_id_iter(void *_data, u8 *mac,
55 struct ieee80211_vif *vif)
56 {
57 struct iwl_mvm_mac_iface_iterator_data *data = _data;
58 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
59 u16 min_bi;
60
61 /* Skip the interface for which we are trying to assign a tsf_id */
62 if (vif == data->vif)
63 return;
64
65 /*
66 * The TSF is a hardware/firmware resource, there are 4 and
67 * the driver should assign and free them as needed. However,
68 * there are cases where 2 MACs should share the same TSF ID
69 * for the purpose of clock sync, an optimization to avoid
70 * clock drift causing overlapping TBTTs/DTIMs for a GO and
71 * client in the system.
72 *
73 * The firmware will decide according to the MAC type which
74 * will be the leader and follower. Clients that need to sync
75 * with a remote station will be the leader, and an AP or GO
76 * will be the follower.
77 *
78 * Depending on the new interface type it can be following
79 * or become the leader of an existing interface.
80 */
81 switch (data->vif->type) {
82 case NL80211_IFTYPE_STATION:
83 /*
84 * The new interface is a client, so if the one we're iterating
85 * is an AP, and the beacon interval of the AP is a multiple or
86 * divisor of the beacon interval of the client, the same TSF
87 * should be used to avoid drift between the new client and
88 * existing AP. The existing AP will get drift updates from the
89 * new client context in this case.
90 */
91 if (vif->type != NL80211_IFTYPE_AP ||
92 data->preferred_tsf != NUM_TSF_IDS ||
93 !test_bit(mvmvif->tsf_id, data->available_tsf_ids))
94 break;
95
96 min_bi = min(data->vif->bss_conf.beacon_int,
97 vif->bss_conf.beacon_int);
98
99 if (!min_bi)
100 break;
101
102 if ((data->vif->bss_conf.beacon_int -
103 vif->bss_conf.beacon_int) % min_bi == 0) {
104 data->preferred_tsf = mvmvif->tsf_id;
105 return;
106 }
107 break;
108
109 case NL80211_IFTYPE_AP:
110 /*
111 * The new interface is AP/GO, so if its beacon interval is a
112 * multiple or a divisor of the beacon interval of an existing
113 * interface, it should get drift updates from an existing
114 * client or use the same TSF as an existing GO. There's no
115 * drift between TSFs internally but if they used different
116 * TSFs then a new client MAC could update one of them and
117 * cause drift that way.
118 */
119 if ((vif->type != NL80211_IFTYPE_AP &&
120 vif->type != NL80211_IFTYPE_STATION) ||
121 data->preferred_tsf != NUM_TSF_IDS ||
122 !test_bit(mvmvif->tsf_id, data->available_tsf_ids))
123 break;
124
125 min_bi = min(data->vif->bss_conf.beacon_int,
126 vif->bss_conf.beacon_int);
127
128 if (!min_bi)
129 break;
130
131 if ((data->vif->bss_conf.beacon_int -
132 vif->bss_conf.beacon_int) % min_bi == 0) {
133 data->preferred_tsf = mvmvif->tsf_id;
134 return;
135 }
136 break;
137 default:
138 /*
139 * For all other interface types there's no need to
140 * take drift into account. Either they're exclusive
141 * like IBSS and monitor, or we don't care much about
142 * their TSF (like P2P Device), but we won't be able
143 * to share the TSF resource.
144 */
145 break;
146 }
147
148 /*
149 * Unless we exited above, we can't share the TSF resource
150 * that the virtual interface we're iterating over is using
151 * with the new one, so clear the available bit and if this
152 * was the preferred one, reset that as well.
153 */
154 __clear_bit(mvmvif->tsf_id, data->available_tsf_ids);
155
156 if (data->preferred_tsf == mvmvif->tsf_id)
157 data->preferred_tsf = NUM_TSF_IDS;
158 }
159
iwl_mvm_mac_iface_iterator(void * _data,u8 * mac,struct ieee80211_vif * vif)160 static void iwl_mvm_mac_iface_iterator(void *_data, u8 *mac,
161 struct ieee80211_vif *vif)
162 {
163 struct iwl_mvm_mac_iface_iterator_data *data = _data;
164 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
165
166 /* Iterator may already find the interface being added -- skip it */
167 if (vif == data->vif) {
168 data->found_vif = true;
169 return;
170 }
171
172 /* Mark MAC IDs as used by clearing the available bit, and
173 * (below) mark TSFs as used if their existing use is not
174 * compatible with the new interface type.
175 * No locking or atomic bit operations are needed since the
176 * data is on the stack of the caller function.
177 */
178 __clear_bit(mvmvif->id, data->available_mac_ids);
179
180 /* find a suitable tsf_id */
181 iwl_mvm_mac_tsf_id_iter(_data, mac, vif);
182 }
183
iwl_mvm_mac_ctxt_recalc_tsf_id(struct iwl_mvm * mvm,struct ieee80211_vif * vif)184 void iwl_mvm_mac_ctxt_recalc_tsf_id(struct iwl_mvm *mvm,
185 struct ieee80211_vif *vif)
186 {
187 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
188 struct iwl_mvm_mac_iface_iterator_data data = {
189 .mvm = mvm,
190 .vif = vif,
191 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 },
192 /* no preference yet */
193 .preferred_tsf = NUM_TSF_IDS,
194 };
195
196 ieee80211_iterate_active_interfaces_atomic(
197 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
198 iwl_mvm_mac_tsf_id_iter, &data);
199
200 if (data.preferred_tsf != NUM_TSF_IDS)
201 mvmvif->tsf_id = data.preferred_tsf;
202 else if (!test_bit(mvmvif->tsf_id, data.available_tsf_ids))
203 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids,
204 NUM_TSF_IDS);
205 }
206
iwl_mvm_mac_ctxt_init(struct iwl_mvm * mvm,struct ieee80211_vif * vif)207 int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
208 {
209 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
210 struct iwl_mvm_mac_iface_iterator_data data = {
211 .mvm = mvm,
212 .vif = vif,
213 .available_mac_ids = { (1 << NUM_MAC_INDEX_DRIVER) - 1 },
214 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 },
215 /* no preference yet */
216 .preferred_tsf = NUM_TSF_IDS,
217 .found_vif = false,
218 };
219 int ret, i;
220
221 lockdep_assert_held(&mvm->mutex);
222
223 /*
224 * Allocate a MAC ID and a TSF for this MAC, along with the queues
225 * and other resources.
226 */
227
228 /*
229 * Before the iterator, we start with all MAC IDs and TSFs available.
230 *
231 * During iteration, all MAC IDs are cleared that are in use by other
232 * virtual interfaces, and all TSF IDs are cleared that can't be used
233 * by this new virtual interface because they're used by an interface
234 * that can't share it with the new one.
235 * At the same time, we check if there's a preferred TSF in the case
236 * that we should share it with another interface.
237 */
238
239 /* MAC ID 0 should be used only for the managed/IBSS vif with non-MLO
240 * FW API
241 */
242 if (!mvm->mld_api_is_used) {
243 switch (vif->type) {
244 case NL80211_IFTYPE_ADHOC:
245 break;
246 case NL80211_IFTYPE_STATION:
247 if (!vif->p2p)
248 break;
249 fallthrough;
250 default:
251 __clear_bit(0, data.available_mac_ids);
252 }
253 }
254
255 ieee80211_iterate_active_interfaces_atomic(
256 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
257 iwl_mvm_mac_iface_iterator, &data);
258
259 /*
260 * In the case we're getting here during resume, it's similar to
261 * firmware restart, and with RESUME_ALL the iterator will find
262 * the vif being added already.
263 * We don't want to reassign any IDs in either case since doing
264 * so would probably assign different IDs (as interfaces aren't
265 * necessarily added in the same order), but the old IDs were
266 * preserved anyway, so skip ID assignment for both resume and
267 * recovery.
268 */
269 if (data.found_vif)
270 return 0;
271
272 /* Therefore, in recovery, we can't get here */
273 if (WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
274 return -EBUSY;
275
276 mvmvif->id = find_first_bit(data.available_mac_ids,
277 NUM_MAC_INDEX_DRIVER);
278 if (mvmvif->id == NUM_MAC_INDEX_DRIVER) {
279 IWL_ERR(mvm, "Failed to init MAC context - no free ID!\n");
280 ret = -EIO;
281 goto exit_fail;
282 }
283
284 if (data.preferred_tsf != NUM_TSF_IDS)
285 mvmvif->tsf_id = data.preferred_tsf;
286 else
287 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids,
288 NUM_TSF_IDS);
289 if (mvmvif->tsf_id == NUM_TSF_IDS) {
290 IWL_ERR(mvm, "Failed to init MAC context - no free TSF!\n");
291 ret = -EIO;
292 goto exit_fail;
293 }
294
295 mvmvif->color = 0;
296
297 INIT_LIST_HEAD(&mvmvif->time_event_data.list);
298 mvmvif->time_event_data.id = TE_MAX;
299 mvmvif->roc_activity = ROC_NUM_ACTIVITIES;
300
301 mvmvif->deflink.bcast_sta.sta_id = IWL_MVM_INVALID_STA;
302 mvmvif->deflink.mcast_sta.sta_id = IWL_MVM_INVALID_STA;
303 mvmvif->deflink.ap_sta_id = IWL_MVM_INVALID_STA;
304
305 /* No need to allocate data queues to P2P Device MAC and NAN.*/
306 if (vif->type == NL80211_IFTYPE_P2P_DEVICE)
307 return 0;
308
309 /* Allocate the CAB queue for softAP and GO interfaces */
310 if (vif->type == NL80211_IFTYPE_AP ||
311 vif->type == NL80211_IFTYPE_ADHOC) {
312 /*
313 * For TVQM this will be overwritten later with the FW assigned
314 * queue value (when queue is enabled).
315 */
316 mvmvif->deflink.cab_queue = IWL_MVM_DQA_GCAST_QUEUE;
317 }
318
319 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++)
320 mvmvif->deflink.smps_requests[i] = IEEE80211_SMPS_AUTOMATIC;
321
322 return 0;
323
324 exit_fail:
325 memset(mvmvif, 0, sizeof(struct iwl_mvm_vif));
326 return ret;
327 }
328
iwl_mvm_ack_rates(struct iwl_mvm * mvm,struct ieee80211_vif * vif,enum nl80211_band band,u8 * cck_rates,u8 * ofdm_rates)329 static void iwl_mvm_ack_rates(struct iwl_mvm *mvm,
330 struct ieee80211_vif *vif,
331 enum nl80211_band band,
332 u8 *cck_rates, u8 *ofdm_rates)
333 {
334 struct ieee80211_supported_band *sband;
335 unsigned long basic = vif->bss_conf.basic_rates;
336 int lowest_present_ofdm = 100;
337 int lowest_present_cck = 100;
338 u8 cck = 0;
339 u8 ofdm = 0;
340 int i;
341
342 sband = mvm->hw->wiphy->bands[band];
343
344 for_each_set_bit(i, &basic, BITS_PER_LONG) {
345 int hw = sband->bitrates[i].hw_value;
346 if (hw >= IWL_FIRST_OFDM_RATE) {
347 ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE);
348 if (lowest_present_ofdm > hw)
349 lowest_present_ofdm = hw;
350 } else {
351 BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0);
352
353 cck |= BIT(hw);
354 if (lowest_present_cck > hw)
355 lowest_present_cck = hw;
356 }
357 }
358
359 /*
360 * Now we've got the basic rates as bitmaps in the ofdm and cck
361 * variables. This isn't sufficient though, as there might not
362 * be all the right rates in the bitmap. E.g. if the only basic
363 * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps
364 * and 6 Mbps because the 802.11-2007 standard says in 9.6:
365 *
366 * [...] a STA responding to a received frame shall transmit
367 * its Control Response frame [...] at the highest rate in the
368 * BSSBasicRateSet parameter that is less than or equal to the
369 * rate of the immediately previous frame in the frame exchange
370 * sequence ([...]) and that is of the same modulation class
371 * ([...]) as the received frame. If no rate contained in the
372 * BSSBasicRateSet parameter meets these conditions, then the
373 * control frame sent in response to a received frame shall be
374 * transmitted at the highest mandatory rate of the PHY that is
375 * less than or equal to the rate of the received frame, and
376 * that is of the same modulation class as the received frame.
377 *
378 * As a consequence, we need to add all mandatory rates that are
379 * lower than all of the basic rates to these bitmaps.
380 */
381
382 if (IWL_RATE_24M_INDEX < lowest_present_ofdm)
383 ofdm |= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE;
384 if (IWL_RATE_12M_INDEX < lowest_present_ofdm)
385 ofdm |= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE;
386 /* 6M already there or needed so always add */
387 ofdm |= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE;
388
389 /*
390 * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP.
391 * Note, however:
392 * - if no CCK rates are basic, it must be ERP since there must
393 * be some basic rates at all, so they're OFDM => ERP PHY
394 * (or we're in 5 GHz, and the cck bitmap will never be used)
395 * - if 11M is a basic rate, it must be ERP as well, so add 5.5M
396 * - if 5.5M is basic, 1M and 2M are mandatory
397 * - if 2M is basic, 1M is mandatory
398 * - if 1M is basic, that's the only valid ACK rate.
399 * As a consequence, it's not as complicated as it sounds, just add
400 * any lower rates to the ACK rate bitmap.
401 */
402 if (IWL_RATE_11M_INDEX < lowest_present_cck)
403 cck |= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE;
404 if (IWL_RATE_5M_INDEX < lowest_present_cck)
405 cck |= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE;
406 if (IWL_RATE_2M_INDEX < lowest_present_cck)
407 cck |= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE;
408 /* 1M already there or needed so always add */
409 cck |= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE;
410
411 *cck_rates = cck;
412 *ofdm_rates = ofdm;
413 }
414
iwl_mvm_set_fw_basic_rates(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_mvm_vif_link_info * link_info,__le32 * cck_rates,__le32 * ofdm_rates)415 void iwl_mvm_set_fw_basic_rates(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
416 struct iwl_mvm_vif_link_info *link_info,
417 __le32 *cck_rates, __le32 *ofdm_rates)
418 {
419 struct iwl_mvm_phy_ctxt *phy_ctxt;
420 u8 cck_ack_rates = 0, ofdm_ack_rates = 0;
421 enum nl80211_band band = NL80211_BAND_2GHZ;
422
423 phy_ctxt = link_info->phy_ctxt;
424 if (phy_ctxt && phy_ctxt->channel)
425 band = phy_ctxt->channel->band;
426
427 iwl_mvm_ack_rates(mvm, vif, band, &cck_ack_rates, &ofdm_ack_rates);
428
429 *cck_rates = cpu_to_le32((u32)cck_ack_rates);
430 *ofdm_rates = cpu_to_le32((u32)ofdm_ack_rates);
431 }
432
iwl_mvm_set_fw_protection_flags(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_bss_conf * link_conf,__le32 * protection_flags,u32 ht_flag,u32 tgg_flag)433 void iwl_mvm_set_fw_protection_flags(struct iwl_mvm *mvm,
434 struct ieee80211_vif *vif,
435 struct ieee80211_bss_conf *link_conf,
436 __le32 *protection_flags, u32 ht_flag,
437 u32 tgg_flag)
438 {
439 /* for both sta and ap, ht_operation_mode hold the protection_mode */
440 u8 protection_mode = link_conf->ht_operation_mode &
441 IEEE80211_HT_OP_MODE_PROTECTION;
442 bool ht_enabled = !!(link_conf->ht_operation_mode &
443 IEEE80211_HT_OP_MODE_PROTECTION);
444
445 if (link_conf->use_cts_prot)
446 *protection_flags |= cpu_to_le32(tgg_flag);
447
448 IWL_DEBUG_RATE(mvm, "use_cts_prot %d, ht_operation_mode %d\n",
449 link_conf->use_cts_prot,
450 link_conf->ht_operation_mode);
451
452 if (!ht_enabled)
453 return;
454
455 IWL_DEBUG_RATE(mvm, "protection mode set to %d\n", protection_mode);
456 /*
457 * See section 9.23.3.1 of IEEE 80211-2012.
458 * Nongreenfield HT STAs Present is not supported.
459 */
460 switch (protection_mode) {
461 case IEEE80211_HT_OP_MODE_PROTECTION_NONE:
462 break;
463 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER:
464 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
465 *protection_flags |= cpu_to_le32(ht_flag);
466 break;
467 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
468 /* Protect when channel wider than 20MHz */
469 if (link_conf->chanreq.oper.width > NL80211_CHAN_WIDTH_20)
470 *protection_flags |= cpu_to_le32(ht_flag);
471 break;
472 default:
473 IWL_ERR(mvm, "Illegal protection mode %d\n",
474 protection_mode);
475 break;
476 }
477 }
478
iwl_mvm_set_fw_qos_params(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_bss_conf * link_conf,struct iwl_ac_qos * ac,__le32 * qos_flags)479 void iwl_mvm_set_fw_qos_params(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
480 struct ieee80211_bss_conf *link_conf,
481 struct iwl_ac_qos *ac, __le32 *qos_flags)
482 {
483 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
484 struct iwl_mvm_vif_link_info *mvm_link =
485 mvmvif->link[link_conf->link_id];
486 int i;
487
488 if (!mvm_link)
489 return;
490
491 for (i = 0; i < IEEE80211_NUM_ACS; i++) {
492 u8 txf = iwl_mvm_mac_ac_to_tx_fifo(mvm, i);
493 u8 ucode_ac = iwl_mvm_mac80211_ac_to_ucode_ac(i);
494
495 ac[ucode_ac].cw_min =
496 cpu_to_le16(mvm_link->queue_params[i].cw_min);
497 ac[ucode_ac].cw_max =
498 cpu_to_le16(mvm_link->queue_params[i].cw_max);
499 ac[ucode_ac].edca_txop =
500 cpu_to_le16(mvm_link->queue_params[i].txop * 32);
501 ac[ucode_ac].aifsn = mvm_link->queue_params[i].aifs;
502 ac[ucode_ac].fifos_mask = BIT(txf);
503 }
504
505 if (link_conf->qos)
506 *qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA);
507
508 if (link_conf->chanreq.oper.width != NL80211_CHAN_WIDTH_20_NOHT)
509 *qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN);
510 }
511
iwl_mvm_get_mac_type(struct ieee80211_vif * vif)512 int iwl_mvm_get_mac_type(struct ieee80211_vif *vif)
513 {
514 u32 mac_type = FW_MAC_TYPE_BSS_STA;
515
516 switch (vif->type) {
517 case NL80211_IFTYPE_STATION:
518 if (vif->p2p)
519 mac_type = FW_MAC_TYPE_P2P_STA;
520 else
521 mac_type = FW_MAC_TYPE_BSS_STA;
522 break;
523 case NL80211_IFTYPE_AP:
524 mac_type = FW_MAC_TYPE_GO;
525 break;
526 case NL80211_IFTYPE_MONITOR:
527 mac_type = FW_MAC_TYPE_LISTENER;
528 break;
529 case NL80211_IFTYPE_P2P_DEVICE:
530 mac_type = FW_MAC_TYPE_P2P_DEVICE;
531 break;
532 case NL80211_IFTYPE_ADHOC:
533 mac_type = FW_MAC_TYPE_IBSS;
534 break;
535 default:
536 WARN_ON_ONCE(1);
537 }
538 return mac_type;
539 }
540
iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_mac_ctx_cmd * cmd,const u8 * bssid_override,u32 action)541 static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm,
542 struct ieee80211_vif *vif,
543 struct iwl_mac_ctx_cmd *cmd,
544 const u8 *bssid_override,
545 u32 action)
546 {
547 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
548 const u8 *bssid = bssid_override ?: vif->bss_conf.bssid;
549 u32 ht_flag;
550
551 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
552 mvmvif->color));
553 cmd->action = cpu_to_le32(action);
554 cmd->mac_type = cpu_to_le32(iwl_mvm_get_mac_type(vif));
555
556 cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id);
557
558 memcpy(cmd->node_addr, vif->addr, ETH_ALEN);
559
560 if (bssid)
561 memcpy(cmd->bssid_addr, bssid, ETH_ALEN);
562 else
563 eth_broadcast_addr(cmd->bssid_addr);
564
565 iwl_mvm_set_fw_basic_rates(mvm, vif, &mvmvif->deflink, &cmd->cck_rates,
566 &cmd->ofdm_rates);
567
568 cmd->cck_short_preamble =
569 cpu_to_le32(vif->bss_conf.use_short_preamble ?
570 MAC_FLG_SHORT_PREAMBLE : 0);
571 cmd->short_slot =
572 cpu_to_le32(vif->bss_conf.use_short_slot ?
573 MAC_FLG_SHORT_SLOT : 0);
574
575 cmd->filter_flags = 0;
576
577 iwl_mvm_set_fw_qos_params(mvm, vif, &vif->bss_conf, cmd->ac,
578 &cmd->qos_flags);
579
580 /* The fw does not distinguish between ht and fat */
581 ht_flag = MAC_PROT_FLG_HT_PROT | MAC_PROT_FLG_FAT_PROT;
582 iwl_mvm_set_fw_protection_flags(mvm, vif, &vif->bss_conf,
583 &cmd->protection_flags,
584 ht_flag, MAC_PROT_FLG_TGG_PROTECT);
585 }
586
iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm * mvm,struct iwl_mac_ctx_cmd * cmd)587 static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm *mvm,
588 struct iwl_mac_ctx_cmd *cmd)
589 {
590 int ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0,
591 sizeof(*cmd), cmd);
592 if (ret)
593 IWL_ERR(mvm, "Failed to send MAC_CONTEXT_CMD (action:%d): %d\n",
594 le32_to_cpu(cmd->action), ret);
595 return ret;
596 }
597
iwl_mvm_set_fw_dtim_tbtt(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_bss_conf * link_conf,__le64 * dtim_tsf,__le32 * dtim_time,__le32 * assoc_beacon_arrive_time)598 void iwl_mvm_set_fw_dtim_tbtt(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
599 struct ieee80211_bss_conf *link_conf,
600 __le64 *dtim_tsf, __le32 *dtim_time,
601 __le32 *assoc_beacon_arrive_time)
602 {
603 u32 dtim_offs;
604
605 /*
606 * The DTIM count counts down, so when it is N that means N
607 * more beacon intervals happen until the DTIM TBTT. Therefore
608 * add this to the current time. If that ends up being in the
609 * future, the firmware will handle it.
610 *
611 * Also note that the system_timestamp (which we get here as
612 * "sync_device_ts") and TSF timestamp aren't at exactly the
613 * same offset in the frame -- the TSF is at the first symbol
614 * of the TSF, the system timestamp is at signal acquisition
615 * time. This means there's an offset between them of at most
616 * a few hundred microseconds (24 * 8 bits + PLCP time gives
617 * 384us in the longest case), this is currently not relevant
618 * as the firmware wakes up around 2ms before the TBTT.
619 */
620 dtim_offs = link_conf->sync_dtim_count *
621 link_conf->beacon_int;
622 /* convert TU to usecs */
623 dtim_offs *= 1024;
624
625 *dtim_tsf =
626 cpu_to_le64(link_conf->sync_tsf + dtim_offs);
627 *dtim_time =
628 cpu_to_le32(link_conf->sync_device_ts + dtim_offs);
629 *assoc_beacon_arrive_time =
630 cpu_to_le32(link_conf->sync_device_ts);
631
632 IWL_DEBUG_INFO(mvm, "DTIM TBTT is 0x%llx/0x%x, offset %d\n",
633 le64_to_cpu(*dtim_tsf),
634 le32_to_cpu(*dtim_time),
635 dtim_offs);
636 }
637
iwl_mvm_mac_ctxt_cmd_p2p_sta_get_oppps_ctwin(struct iwl_mvm * mvm,struct ieee80211_vif * vif)638 __le32 iwl_mvm_mac_ctxt_cmd_p2p_sta_get_oppps_ctwin(struct iwl_mvm *mvm,
639 struct ieee80211_vif *vif)
640 {
641 struct ieee80211_p2p_noa_attr *noa =
642 &vif->bss_conf.p2p_noa_attr;
643
644 return cpu_to_le32(noa->oppps_ctwindow &
645 IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
646 }
647
iwl_mvm_mac_ctxt_cmd_sta_get_twt_policy(struct iwl_mvm * mvm,struct ieee80211_vif * vif)648 u32 iwl_mvm_mac_ctxt_cmd_sta_get_twt_policy(struct iwl_mvm *mvm,
649 struct ieee80211_vif *vif)
650 {
651 u32 twt_policy = 0;
652
653 if (vif->bss_conf.twt_requester && IWL_MVM_USE_TWT)
654 twt_policy |= TWT_SUPPORTED;
655 if (vif->bss_conf.twt_protected)
656 twt_policy |= PROTECTED_TWT_SUPPORTED;
657 if (vif->bss_conf.twt_broadcast)
658 twt_policy |= BROADCAST_TWT_SUPPORTED;
659
660 return twt_policy;
661 }
662
iwl_mvm_mac_ctxt_cmd_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u32 action,bool force_assoc_off,const u8 * bssid_override)663 static int iwl_mvm_mac_ctxt_cmd_sta(struct iwl_mvm *mvm,
664 struct ieee80211_vif *vif,
665 u32 action, bool force_assoc_off,
666 const u8 *bssid_override)
667 {
668 struct iwl_mac_ctx_cmd cmd = {};
669 struct iwl_mac_data_sta *ctxt_sta;
670
671 WARN_ON(vif->type != NL80211_IFTYPE_STATION);
672
673 /* Fill the common data for all mac context types */
674 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, bssid_override, action);
675
676 /*
677 * We always want to hear MCAST frames, if we're not authorized yet,
678 * we'll drop them.
679 */
680 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_ACCEPT_GRP);
681
682 if (vif->p2p) {
683 cmd.p2p_sta.ctwin =
684 iwl_mvm_mac_ctxt_cmd_p2p_sta_get_oppps_ctwin(mvm, vif);
685
686 ctxt_sta = &cmd.p2p_sta.sta;
687 } else {
688 ctxt_sta = &cmd.sta;
689 }
690
691 /* We need the dtim_period to set the MAC as associated */
692 if (vif->cfg.assoc && vif->bss_conf.dtim_period &&
693 !force_assoc_off) {
694 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
695
696 iwl_mvm_set_fw_dtim_tbtt(mvm, vif, &vif->bss_conf,
697 &ctxt_sta->dtim_tsf,
698 &ctxt_sta->dtim_time,
699 &ctxt_sta->assoc_beacon_arrive_time);
700
701 ctxt_sta->is_assoc = cpu_to_le32(1);
702
703 if (!mvmvif->authorized &&
704 fw_has_capa(&mvm->fw->ucode_capa,
705 IWL_UCODE_TLV_CAPA_COEX_HIGH_PRIO))
706 ctxt_sta->data_policy |=
707 cpu_to_le32(COEX_HIGH_PRIORITY_ENABLE);
708 } else {
709 ctxt_sta->is_assoc = cpu_to_le32(0);
710
711 /* Allow beacons to pass through as long as we are not
712 * associated, or we do not have dtim period information.
713 */
714 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON);
715 }
716
717 ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int);
718 ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
719 vif->bss_conf.dtim_period);
720
721 ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval);
722 ctxt_sta->assoc_id = cpu_to_le32(vif->cfg.aid);
723
724 if (vif->probe_req_reg && vif->cfg.assoc && vif->p2p)
725 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
726
727 if (vif->bss_conf.he_support && !iwlwifi_mod_params.disable_11ax) {
728 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_11AX);
729 ctxt_sta->data_policy |=
730 cpu_to_le32(iwl_mvm_mac_ctxt_cmd_sta_get_twt_policy(mvm, vif));
731 }
732
733
734 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
735 }
736
iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u32 action)737 static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm,
738 struct ieee80211_vif *vif,
739 u32 action)
740 {
741 struct iwl_mac_ctx_cmd cmd = {};
742 u32 tfd_queue_msk = 0;
743 int ret;
744
745 WARN_ON(vif->type != NL80211_IFTYPE_MONITOR);
746
747 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
748
749 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROMISC |
750 MAC_FILTER_IN_CONTROL_AND_MGMT |
751 MAC_FILTER_IN_BEACON |
752 MAC_FILTER_IN_PROBE_REQUEST |
753 MAC_FILTER_IN_CRC32 |
754 MAC_FILTER_ACCEPT_GRP);
755 ieee80211_hw_set(mvm->hw, RX_INCLUDES_FCS);
756
757 /*
758 * the queue mask is only relevant for old TX API, and
759 * mvm->snif_queue isn't set here (it's still set to
760 * IWL_MVM_INVALID_QUEUE so the BIT() of it is UB)
761 */
762 if (!iwl_mvm_has_new_tx_api(mvm))
763 tfd_queue_msk = BIT(mvm->snif_queue);
764
765 /* Allocate sniffer station */
766 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->snif_sta, tfd_queue_msk,
767 vif->type, IWL_STA_GENERAL_PURPOSE);
768 if (ret)
769 return ret;
770
771 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
772 }
773
iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u32 action)774 static int iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm *mvm,
775 struct ieee80211_vif *vif,
776 u32 action)
777 {
778 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
779 struct iwl_mac_ctx_cmd cmd = {};
780
781 WARN_ON(vif->type != NL80211_IFTYPE_ADHOC);
782
783 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
784
785 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_BEACON |
786 MAC_FILTER_IN_PROBE_REQUEST |
787 MAC_FILTER_ACCEPT_GRP);
788
789 /* cmd.ibss.beacon_time/cmd.ibss.beacon_tsf are curently ignored */
790 cmd.ibss.bi = cpu_to_le32(vif->bss_conf.beacon_int);
791
792 /* TODO: Assumes that the beacon id == mac context id */
793 cmd.ibss.beacon_template = cpu_to_le32(mvmvif->id);
794
795 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
796 }
797
798 struct iwl_mvm_go_iterator_data {
799 bool go_active;
800 };
801
iwl_mvm_go_iterator(void * _data,u8 * mac,struct ieee80211_vif * vif)802 static void iwl_mvm_go_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif)
803 {
804 struct iwl_mvm_go_iterator_data *data = _data;
805 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
806
807 if (vif->type == NL80211_IFTYPE_AP && vif->p2p &&
808 mvmvif->ap_ibss_active)
809 data->go_active = true;
810 }
811
iwl_mac_ctxt_p2p_dev_has_extended_disc(struct iwl_mvm * mvm,struct ieee80211_vif * vif)812 __le32 iwl_mac_ctxt_p2p_dev_has_extended_disc(struct iwl_mvm *mvm,
813 struct ieee80211_vif *vif)
814 {
815 struct iwl_mvm_go_iterator_data data = {};
816
817 /*
818 * This flag should be set to true when the P2P Device is
819 * discoverable and there is at least another active P2P GO. Settings
820 * this flag will allow the P2P Device to be discoverable on other
821 * channels in addition to its listen channel.
822 * Note that this flag should not be set in other cases as it opens the
823 * Rx filters on all MAC and increases the number of interrupts.
824 */
825 ieee80211_iterate_active_interfaces_atomic(
826 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
827 iwl_mvm_go_iterator, &data);
828
829 return cpu_to_le32(data.go_active ? 1 : 0);
830 }
831
iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u32 action)832 static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm,
833 struct ieee80211_vif *vif,
834 u32 action)
835 {
836 struct iwl_mac_ctx_cmd cmd = {};
837
838 WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE);
839
840 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
841
842 cmd.p2p_dev.is_disc_extended =
843 iwl_mac_ctxt_p2p_dev_has_extended_disc(mvm, vif);
844
845 /* Override the filter flags to accept only probe requests */
846 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
847
848 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
849 }
850
iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm * mvm,__le32 * tim_index,__le32 * tim_size,u8 * beacon,u32 frame_size)851 void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm,
852 __le32 *tim_index, __le32 *tim_size,
853 u8 *beacon, u32 frame_size)
854 {
855 u32 tim_idx;
856 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
857
858 /* The index is relative to frame start but we start looking at the
859 * variable-length part of the beacon. */
860 tim_idx = mgmt->u.beacon.variable - beacon;
861
862 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
863 while ((tim_idx < (frame_size - 2)) &&
864 (beacon[tim_idx] != WLAN_EID_TIM))
865 tim_idx += beacon[tim_idx+1] + 2;
866
867 /* If TIM field was found, set variables */
868 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
869 *tim_index = cpu_to_le32(tim_idx);
870 *tim_size = cpu_to_le32((u32)beacon[tim_idx + 1]);
871 } else {
872 IWL_WARN(mvm, "Unable to find TIM Element in beacon\n");
873 }
874 }
875
iwl_mvm_find_ie_offset(u8 * beacon,u8 eid,u32 frame_size)876 u32 iwl_mvm_find_ie_offset(u8 *beacon, u8 eid, u32 frame_size)
877 {
878 struct ieee80211_mgmt *mgmt = (void *)beacon;
879 const u8 *ie;
880
881 if (WARN_ON_ONCE(frame_size <= (mgmt->u.beacon.variable - beacon)))
882 return 0;
883
884 frame_size -= mgmt->u.beacon.variable - beacon;
885
886 ie = cfg80211_find_ie(eid, mgmt->u.beacon.variable, frame_size);
887 if (!ie)
888 return 0;
889
890 return ie - beacon;
891 }
892
iwl_mvm_mac_ctxt_get_lowest_rate(struct iwl_mvm * mvm,struct ieee80211_tx_info * info,struct ieee80211_vif * vif)893 u8 iwl_mvm_mac_ctxt_get_lowest_rate(struct iwl_mvm *mvm,
894 struct ieee80211_tx_info *info,
895 struct ieee80211_vif *vif)
896 {
897 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
898 struct ieee80211_supported_band *sband;
899 unsigned long basic = vif->bss_conf.basic_rates;
900 u16 lowest_cck = IWL_RATE_COUNT, lowest_ofdm = IWL_RATE_COUNT;
901 u32 link_id = u32_get_bits(info->control.flags,
902 IEEE80211_TX_CTRL_MLO_LINK);
903 u8 band = info->band;
904 u8 rate;
905 u32 i;
906
907 if (link_id == IEEE80211_LINK_UNSPECIFIED && ieee80211_vif_is_mld(vif)) {
908 for (i = 0; i < ARRAY_SIZE(mvmvif->link); i++) {
909 if (!mvmvif->link[i])
910 continue;
911 /* shouldn't do this when >1 link is active */
912 WARN_ON_ONCE(link_id != IEEE80211_LINK_UNSPECIFIED);
913 link_id = i;
914 }
915 }
916
917 if (link_id < IEEE80211_LINK_UNSPECIFIED) {
918 struct ieee80211_bss_conf *link_conf;
919
920 rcu_read_lock();
921 link_conf = rcu_dereference(vif->link_conf[link_id]);
922 if (link_conf) {
923 basic = link_conf->basic_rates;
924 if (link_conf->chanreq.oper.chan)
925 band = link_conf->chanreq.oper.chan->band;
926 }
927 rcu_read_unlock();
928 }
929
930 sband = mvm->hw->wiphy->bands[band];
931 for_each_set_bit(i, &basic, BITS_PER_LONG) {
932 u16 hw = sband->bitrates[i].hw_value;
933
934 if (hw >= IWL_FIRST_OFDM_RATE) {
935 if (lowest_ofdm > hw)
936 lowest_ofdm = hw;
937 } else if (lowest_cck > hw) {
938 lowest_cck = hw;
939 }
940 }
941
942 if (band == NL80211_BAND_2GHZ && !vif->p2p &&
943 vif->type != NL80211_IFTYPE_P2P_DEVICE &&
944 !(info->flags & IEEE80211_TX_CTL_NO_CCK_RATE)) {
945 if (lowest_cck != IWL_RATE_COUNT)
946 rate = lowest_cck;
947 else if (lowest_ofdm != IWL_RATE_COUNT)
948 rate = lowest_ofdm;
949 else
950 rate = IWL_RATE_1M_INDEX;
951 } else if (lowest_ofdm != IWL_RATE_COUNT) {
952 rate = lowest_ofdm;
953 } else {
954 rate = IWL_RATE_6M_INDEX;
955 }
956
957 return rate;
958 }
959
iwl_mvm_mac_ctxt_get_beacon_flags(const struct iwl_fw * fw,u8 rate_idx)960 u16 iwl_mvm_mac_ctxt_get_beacon_flags(const struct iwl_fw *fw, u8 rate_idx)
961 {
962 u16 flags = iwl_mvm_mac80211_idx_to_hwrate(fw, rate_idx);
963 bool is_new_rate = iwl_fw_lookup_cmd_ver(fw, BEACON_TEMPLATE_CMD, 0) > 10;
964
965 if (rate_idx <= IWL_FIRST_CCK_RATE)
966 flags |= is_new_rate ? IWL_MAC_BEACON_CCK
967 : IWL_MAC_BEACON_CCK_V1;
968
969 return flags;
970 }
971
iwl_mvm_mac_ctxt_get_beacon_rate(struct iwl_mvm * mvm,struct ieee80211_tx_info * info,struct ieee80211_vif * vif)972 u8 iwl_mvm_mac_ctxt_get_beacon_rate(struct iwl_mvm *mvm,
973 struct ieee80211_tx_info *info,
974 struct ieee80211_vif *vif)
975 {
976 struct ieee80211_supported_band *sband =
977 mvm->hw->wiphy->bands[info->band];
978 u32 legacy = vif->bss_conf.beacon_tx_rate.control[info->band].legacy;
979
980 /* if beacon rate was configured try using it */
981 if (hweight32(legacy) == 1) {
982 u32 rate = ffs(legacy) - 1;
983
984 return sband->bitrates[rate].hw_value;
985 }
986
987 return iwl_mvm_mac_ctxt_get_lowest_rate(mvm, info, vif);
988 }
989
iwl_mvm_mac_ctxt_set_tx(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct sk_buff * beacon,struct iwl_tx_cmd * tx)990 static void iwl_mvm_mac_ctxt_set_tx(struct iwl_mvm *mvm,
991 struct ieee80211_vif *vif,
992 struct sk_buff *beacon,
993 struct iwl_tx_cmd *tx)
994 {
995 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
996 struct ieee80211_tx_info *info;
997 u8 rate;
998 u32 tx_flags;
999
1000 info = IEEE80211_SKB_CB(beacon);
1001
1002 /* Set up TX command fields */
1003 tx->len = cpu_to_le16((u16)beacon->len);
1004 tx->sta_id = mvmvif->deflink.bcast_sta.sta_id;
1005 tx->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
1006 tx_flags = TX_CMD_FLG_SEQ_CTL | TX_CMD_FLG_TSF;
1007 tx_flags |=
1008 iwl_mvm_bt_coex_tx_prio(mvm, (void *)beacon->data, info, 0) <<
1009 TX_CMD_FLG_BT_PRIO_POS;
1010 tx->tx_flags = cpu_to_le32(tx_flags);
1011
1012 if (!fw_has_capa(&mvm->fw->ucode_capa,
1013 IWL_UCODE_TLV_CAPA_BEACON_ANT_SELECTION)) {
1014 iwl_mvm_toggle_tx_ant(mvm, &mvm->mgmt_last_antenna_idx);
1015
1016 tx->rate_n_flags =
1017 cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) <<
1018 RATE_MCS_ANT_POS);
1019 }
1020
1021 rate = iwl_mvm_mac_ctxt_get_beacon_rate(mvm, info, vif);
1022
1023 tx->rate_n_flags |=
1024 cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(mvm->fw, rate));
1025 if (rate == IWL_FIRST_CCK_RATE)
1026 tx->rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK_V1);
1027
1028 }
1029
iwl_mvm_mac_ctxt_send_beacon_cmd(struct iwl_mvm * mvm,struct sk_buff * beacon,void * data,int len)1030 int iwl_mvm_mac_ctxt_send_beacon_cmd(struct iwl_mvm *mvm,
1031 struct sk_buff *beacon,
1032 void *data, int len)
1033 {
1034 struct iwl_host_cmd cmd = {
1035 .id = BEACON_TEMPLATE_CMD,
1036 .flags = CMD_ASYNC,
1037 };
1038
1039 cmd.len[0] = len;
1040 cmd.data[0] = data;
1041 cmd.dataflags[0] = 0;
1042 cmd.len[1] = beacon->len;
1043 cmd.data[1] = beacon->data;
1044 cmd.dataflags[1] = IWL_HCMD_DFL_DUP;
1045
1046 return iwl_mvm_send_cmd(mvm, &cmd);
1047 }
1048
iwl_mvm_mac_ctxt_send_beacon_v6(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct sk_buff * beacon)1049 static int iwl_mvm_mac_ctxt_send_beacon_v6(struct iwl_mvm *mvm,
1050 struct ieee80211_vif *vif,
1051 struct sk_buff *beacon)
1052 {
1053 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1054 struct iwl_mac_beacon_cmd_v6 beacon_cmd = {};
1055
1056 iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx);
1057
1058 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
1059
1060 if (vif->type == NL80211_IFTYPE_AP)
1061 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
1062 &beacon_cmd.tim_size,
1063 beacon->data, beacon->len);
1064
1065 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
1066 sizeof(beacon_cmd));
1067 }
1068
iwl_mvm_mac_ctxt_send_beacon_v7(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct sk_buff * beacon)1069 static int iwl_mvm_mac_ctxt_send_beacon_v7(struct iwl_mvm *mvm,
1070 struct ieee80211_vif *vif,
1071 struct sk_buff *beacon)
1072 {
1073 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1074 struct iwl_mac_beacon_cmd_v7 beacon_cmd = {};
1075
1076 iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx);
1077
1078 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
1079
1080 if (vif->type == NL80211_IFTYPE_AP)
1081 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
1082 &beacon_cmd.tim_size,
1083 beacon->data, beacon->len);
1084
1085 beacon_cmd.csa_offset =
1086 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
1087 WLAN_EID_CHANNEL_SWITCH,
1088 beacon->len));
1089 beacon_cmd.ecsa_offset =
1090 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
1091 WLAN_EID_EXT_CHANSWITCH_ANN,
1092 beacon->len));
1093
1094 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
1095 sizeof(beacon_cmd));
1096 }
1097
iwl_mvm_enable_fils(struct iwl_mvm * mvm,struct ieee80211_chanctx_conf * ctx)1098 bool iwl_mvm_enable_fils(struct iwl_mvm *mvm,
1099 struct ieee80211_chanctx_conf *ctx)
1100 {
1101 if (IWL_MVM_DISABLE_AP_FILS)
1102 return false;
1103
1104 if (cfg80211_channel_is_psc(ctx->def.chan))
1105 return true;
1106
1107 return (ctx->def.chan->band == NL80211_BAND_6GHZ &&
1108 ctx->def.width >= NL80211_CHAN_WIDTH_80);
1109 }
1110
iwl_mvm_mac_ctxt_send_beacon_v9(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct sk_buff * beacon,struct ieee80211_bss_conf * link_conf)1111 static int iwl_mvm_mac_ctxt_send_beacon_v9(struct iwl_mvm *mvm,
1112 struct ieee80211_vif *vif,
1113 struct sk_buff *beacon,
1114 struct ieee80211_bss_conf *link_conf)
1115 {
1116 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1117 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(beacon);
1118 struct iwl_mac_beacon_cmd beacon_cmd = {};
1119 u8 rate = iwl_mvm_mac_ctxt_get_beacon_rate(mvm, info, vif);
1120 u16 flags;
1121 struct ieee80211_chanctx_conf *ctx;
1122 int channel;
1123 flags = iwl_mvm_mac_ctxt_get_beacon_flags(mvm->fw, rate);
1124
1125 /* Enable FILS on PSC channels only */
1126 rcu_read_lock();
1127 ctx = rcu_dereference(link_conf->chanctx_conf);
1128 channel = ieee80211_frequency_to_channel(ctx->def.chan->center_freq);
1129 WARN_ON(channel == 0);
1130 if (iwl_mvm_enable_fils(mvm, ctx)) {
1131 flags |= iwl_fw_lookup_cmd_ver(mvm->fw, BEACON_TEMPLATE_CMD,
1132 0) > 10 ?
1133 IWL_MAC_BEACON_FILS :
1134 IWL_MAC_BEACON_FILS_V1;
1135 beacon_cmd.short_ssid =
1136 cpu_to_le32(~crc32_le(~0, vif->cfg.ssid,
1137 vif->cfg.ssid_len));
1138 }
1139 rcu_read_unlock();
1140
1141 beacon_cmd.flags = cpu_to_le16(flags);
1142 beacon_cmd.byte_cnt = cpu_to_le16((u16)beacon->len);
1143
1144 if (WARN_ON(!mvmvif->link[link_conf->link_id]))
1145 return -EINVAL;
1146
1147 if (iwl_fw_lookup_cmd_ver(mvm->fw, BEACON_TEMPLATE_CMD, 0) > 12)
1148 beacon_cmd.link_id =
1149 cpu_to_le32(mvmvif->link[link_conf->link_id]->fw_link_id);
1150 else
1151 beacon_cmd.link_id = cpu_to_le32((u32)mvmvif->id);
1152
1153 if (vif->type == NL80211_IFTYPE_AP)
1154 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
1155 &beacon_cmd.tim_size,
1156 beacon->data, beacon->len);
1157
1158 beacon_cmd.csa_offset =
1159 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
1160 WLAN_EID_CHANNEL_SWITCH,
1161 beacon->len));
1162 beacon_cmd.ecsa_offset =
1163 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
1164 WLAN_EID_EXT_CHANSWITCH_ANN,
1165 beacon->len));
1166
1167 if (vif->type == NL80211_IFTYPE_AP &&
1168 iwl_fw_lookup_cmd_ver(mvm->fw, BEACON_TEMPLATE_CMD, 0) >= 14)
1169 beacon_cmd.btwt_offset =
1170 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
1171 WLAN_EID_S1G_TWT,
1172 beacon->len));
1173
1174 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
1175 sizeof(beacon_cmd));
1176 }
1177
iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct sk_buff * beacon,struct ieee80211_bss_conf * link_conf)1178 static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm,
1179 struct ieee80211_vif *vif,
1180 struct sk_buff *beacon,
1181 struct ieee80211_bss_conf *link_conf)
1182 {
1183 if (WARN_ON(!beacon))
1184 return -EINVAL;
1185
1186 if (IWL_MVM_NON_TRANSMITTING_AP)
1187 return 0;
1188
1189 if (!fw_has_capa(&mvm->fw->ucode_capa,
1190 IWL_UCODE_TLV_CAPA_CSA_AND_TBTT_OFFLOAD))
1191 return iwl_mvm_mac_ctxt_send_beacon_v6(mvm, vif, beacon);
1192
1193 if (fw_has_api(&mvm->fw->ucode_capa,
1194 IWL_UCODE_TLV_API_NEW_BEACON_TEMPLATE))
1195 return iwl_mvm_mac_ctxt_send_beacon_v9(mvm, vif, beacon,
1196 link_conf);
1197
1198 return iwl_mvm_mac_ctxt_send_beacon_v7(mvm, vif, beacon);
1199 }
1200
1201 /* The beacon template for the AP/GO/IBSS has changed and needs update */
iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_bss_conf * link_conf)1202 int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm,
1203 struct ieee80211_vif *vif,
1204 struct ieee80211_bss_conf *link_conf)
1205 {
1206 struct sk_buff *beacon;
1207 int ret;
1208
1209 WARN_ON(vif->type != NL80211_IFTYPE_AP &&
1210 vif->type != NL80211_IFTYPE_ADHOC);
1211
1212 beacon = ieee80211_beacon_get_template(mvm->hw, vif, NULL,
1213 link_conf->link_id);
1214 if (!beacon)
1215 return -ENOMEM;
1216
1217 #ifdef CONFIG_IWLWIFI_DEBUGFS
1218 if (mvm->beacon_inject_active) {
1219 dev_kfree_skb(beacon);
1220 return -EBUSY;
1221 }
1222 #endif
1223
1224 ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon, link_conf);
1225 dev_kfree_skb(beacon);
1226 return ret;
1227 }
1228
1229 struct iwl_mvm_mac_ap_iterator_data {
1230 struct iwl_mvm *mvm;
1231 struct ieee80211_vif *vif;
1232 u32 beacon_device_ts;
1233 u16 beacon_int;
1234 };
1235
1236 /* Find the beacon_device_ts and beacon_int for a managed interface */
iwl_mvm_mac_ap_iterator(void * _data,u8 * mac,struct ieee80211_vif * vif)1237 static void iwl_mvm_mac_ap_iterator(void *_data, u8 *mac,
1238 struct ieee80211_vif *vif)
1239 {
1240 struct iwl_mvm_mac_ap_iterator_data *data = _data;
1241
1242 if (vif->type != NL80211_IFTYPE_STATION || !vif->cfg.assoc)
1243 return;
1244
1245 /* Station client has higher priority over P2P client*/
1246 if (vif->p2p && data->beacon_device_ts)
1247 return;
1248
1249 data->beacon_device_ts = vif->bss_conf.sync_device_ts;
1250 data->beacon_int = vif->bss_conf.beacon_int;
1251 }
1252
1253 /*
1254 * Fill the filter flags for mac context of type AP or P2P GO.
1255 */
iwl_mvm_mac_ctxt_cmd_ap_set_filter_flags(struct iwl_mvm * mvm,struct iwl_mvm_vif * mvmvif,__le32 * filter_flags,int accept_probe_req_flag,int accept_beacon_flag)1256 void iwl_mvm_mac_ctxt_cmd_ap_set_filter_flags(struct iwl_mvm *mvm,
1257 struct iwl_mvm_vif *mvmvif,
1258 __le32 *filter_flags,
1259 int accept_probe_req_flag,
1260 int accept_beacon_flag)
1261 {
1262 /*
1263 * in AP mode, pass probe requests and beacons from other APs
1264 * (needed for ht protection); when there're no any associated
1265 * station don't ask FW to pass beacons to prevent unnecessary
1266 * wake-ups.
1267 */
1268 *filter_flags |= cpu_to_le32(accept_probe_req_flag);
1269 if (mvmvif->ap_assoc_sta_count || !mvm->drop_bcn_ap_mode) {
1270 *filter_flags |= cpu_to_le32(accept_beacon_flag);
1271 IWL_DEBUG_HC(mvm, "Asking FW to pass beacons\n");
1272 } else {
1273 IWL_DEBUG_HC(mvm, "No need to receive beacons\n");
1274 }
1275 }
1276
1277 /*
1278 * Fill the specific data for mac context of type AP of P2P GO
1279 */
iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_mac_ctx_cmd * cmd,struct iwl_mac_data_ap * ctxt_ap,bool add)1280 static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm,
1281 struct ieee80211_vif *vif,
1282 struct iwl_mac_ctx_cmd *cmd,
1283 struct iwl_mac_data_ap *ctxt_ap,
1284 bool add)
1285 {
1286 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1287 struct iwl_mvm_mac_ap_iterator_data data = {
1288 .mvm = mvm,
1289 .vif = vif,
1290 .beacon_device_ts = 0
1291 };
1292
1293 /* in AP mode, the MCAST FIFO takes the EDCA params from VO */
1294 cmd->ac[IWL_MVM_TX_FIFO_VO].fifos_mask |= BIT(IWL_MVM_TX_FIFO_MCAST);
1295
1296 iwl_mvm_mac_ctxt_cmd_ap_set_filter_flags(mvm, mvmvif,
1297 &cmd->filter_flags,
1298 MAC_FILTER_IN_PROBE_REQUEST,
1299 MAC_FILTER_IN_BEACON);
1300
1301 ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int);
1302 ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
1303 vif->bss_conf.dtim_period);
1304
1305 if (!fw_has_api(&mvm->fw->ucode_capa,
1306 IWL_UCODE_TLV_API_STA_TYPE))
1307 ctxt_ap->mcast_qid = cpu_to_le32(mvmvif->deflink.cab_queue);
1308
1309 /*
1310 * Only set the beacon time when the MAC is being added, when we
1311 * just modify the MAC then we should keep the time -- the firmware
1312 * can otherwise have a "jumping" TBTT.
1313 */
1314 if (add) {
1315 /*
1316 * If there is a station/P2P client interface which is
1317 * associated, set the AP's TBTT far enough from the station's
1318 * TBTT. Otherwise, set it to the current system time
1319 */
1320 ieee80211_iterate_active_interfaces_atomic(
1321 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
1322 iwl_mvm_mac_ap_iterator, &data);
1323
1324 if (data.beacon_device_ts) {
1325 u32 rand = get_random_u32_inclusive(36, 63);
1326 mvmvif->ap_beacon_time = data.beacon_device_ts +
1327 ieee80211_tu_to_usec(data.beacon_int * rand /
1328 100);
1329 } else {
1330 mvmvif->ap_beacon_time = iwl_mvm_get_systime(mvm);
1331 }
1332 }
1333
1334 ctxt_ap->beacon_time = cpu_to_le32(mvmvif->ap_beacon_time);
1335 ctxt_ap->beacon_tsf = 0; /* unused */
1336
1337 /* TODO: Assume that the beacon id == mac context id */
1338 ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id);
1339 }
1340
iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u32 action)1341 static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm,
1342 struct ieee80211_vif *vif,
1343 u32 action)
1344 {
1345 struct iwl_mac_ctx_cmd cmd = {};
1346
1347 WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p);
1348
1349 /* Fill the common data for all mac context types */
1350 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
1351
1352 /* Fill the data specific for ap mode */
1353 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.ap,
1354 action == FW_CTXT_ACTION_ADD);
1355
1356 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
1357 }
1358
iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u32 action)1359 static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm,
1360 struct ieee80211_vif *vif,
1361 u32 action)
1362 {
1363 struct iwl_mac_ctx_cmd cmd = {};
1364 struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr;
1365
1366 WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p);
1367
1368 /* Fill the common data for all mac context types */
1369 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
1370
1371 /* Fill the data specific for GO mode */
1372 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.go.ap,
1373 action == FW_CTXT_ACTION_ADD);
1374
1375 cmd.go.ctwin = cpu_to_le32(noa->oppps_ctwindow &
1376 IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
1377 cmd.go.opp_ps_enabled =
1378 cpu_to_le32(!!(noa->oppps_ctwindow &
1379 IEEE80211_P2P_OPPPS_ENABLE_BIT));
1380
1381 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
1382 }
1383
iwl_mvm_mac_ctx_send(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u32 action,bool force_assoc_off,const u8 * bssid_override)1384 static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1385 u32 action, bool force_assoc_off,
1386 const u8 *bssid_override)
1387 {
1388 switch (vif->type) {
1389 case NL80211_IFTYPE_STATION:
1390 return iwl_mvm_mac_ctxt_cmd_sta(mvm, vif, action,
1391 force_assoc_off,
1392 bssid_override);
1393 case NL80211_IFTYPE_AP:
1394 if (!vif->p2p)
1395 return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action);
1396 else
1397 return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action);
1398 case NL80211_IFTYPE_MONITOR:
1399 return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action);
1400 case NL80211_IFTYPE_P2P_DEVICE:
1401 return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action);
1402 case NL80211_IFTYPE_ADHOC:
1403 return iwl_mvm_mac_ctxt_cmd_ibss(mvm, vif, action);
1404 default:
1405 break;
1406 }
1407
1408 return -EOPNOTSUPP;
1409 }
1410
iwl_mvm_mac_ctxt_add(struct iwl_mvm * mvm,struct ieee80211_vif * vif)1411 int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1412 {
1413 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1414 int ret;
1415
1416 if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n",
1417 vif->addr, ieee80211_vif_type_p2p(vif)))
1418 return -EIO;
1419
1420 ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD,
1421 true, NULL);
1422 if (ret)
1423 return ret;
1424
1425 /* will only do anything at resume from D3 time */
1426 iwl_mvm_set_last_nonqos_seq(mvm, vif);
1427
1428 mvmvif->uploaded = true;
1429 return 0;
1430 }
1431
iwl_mvm_mac_ctxt_changed(struct iwl_mvm * mvm,struct ieee80211_vif * vif,bool force_assoc_off,const u8 * bssid_override)1432 int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1433 bool force_assoc_off, const u8 *bssid_override)
1434 {
1435 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1436
1437 if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n",
1438 vif->addr, ieee80211_vif_type_p2p(vif)))
1439 return -EIO;
1440
1441 return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY,
1442 force_assoc_off, bssid_override);
1443 }
1444
iwl_mvm_mac_ctxt_remove(struct iwl_mvm * mvm,struct ieee80211_vif * vif)1445 int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1446 {
1447 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1448 struct iwl_mac_ctx_cmd cmd;
1449 int ret;
1450
1451 if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n",
1452 vif->addr, ieee80211_vif_type_p2p(vif)))
1453 return -EIO;
1454
1455 memset(&cmd, 0, sizeof(cmd));
1456
1457 cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
1458 mvmvif->color));
1459 cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE);
1460
1461 ret = iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
1462 if (ret)
1463 return ret;
1464
1465 mvmvif->uploaded = false;
1466
1467 if (vif->type == NL80211_IFTYPE_MONITOR) {
1468 __clear_bit(IEEE80211_HW_RX_INCLUDES_FCS, mvm->hw->flags);
1469 iwl_mvm_dealloc_snif_sta(mvm);
1470 }
1471
1472 return 0;
1473 }
1474
iwl_mvm_csa_count_down(struct iwl_mvm * mvm,struct ieee80211_vif * csa_vif,u32 gp2,bool tx_success)1475 static void iwl_mvm_csa_count_down(struct iwl_mvm *mvm,
1476 struct ieee80211_vif *csa_vif, u32 gp2,
1477 bool tx_success)
1478 {
1479 struct iwl_mvm_vif *mvmvif =
1480 iwl_mvm_vif_from_mac80211(csa_vif);
1481
1482 /* Don't start to countdown from a failed beacon */
1483 if (!tx_success && !mvmvif->csa_countdown)
1484 return;
1485
1486 mvmvif->csa_countdown = true;
1487
1488 if (!ieee80211_beacon_cntdwn_is_complete(csa_vif, 0)) {
1489 int c = ieee80211_beacon_update_cntdwn(csa_vif, 0);
1490
1491 iwl_mvm_mac_ctxt_beacon_changed(mvm, csa_vif,
1492 &csa_vif->bss_conf);
1493 if (csa_vif->p2p &&
1494 !iwl_mvm_te_scheduled(&mvmvif->time_event_data) && gp2 &&
1495 tx_success) {
1496 u32 rel_time = (c + 1) *
1497 csa_vif->bss_conf.beacon_int -
1498 IWL_MVM_CHANNEL_SWITCH_TIME_GO;
1499 u32 apply_time = gp2 + rel_time * 1024;
1500
1501 iwl_mvm_schedule_csa_period(mvm, csa_vif,
1502 IWL_MVM_CHANNEL_SWITCH_TIME_GO -
1503 IWL_MVM_CHANNEL_SWITCH_MARGIN,
1504 apply_time);
1505 }
1506 } else if (!iwl_mvm_te_scheduled(&mvmvif->time_event_data)) {
1507 /* we don't have CSA NoA scheduled yet, switch now */
1508 ieee80211_csa_finish(csa_vif, 0);
1509 RCU_INIT_POINTER(mvm->csa_vif, NULL);
1510 }
1511 }
1512
iwl_mvm_rx_beacon_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1513 void iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm,
1514 struct iwl_rx_cmd_buffer *rxb)
1515 {
1516 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1517 unsigned int pkt_len = iwl_rx_packet_payload_len(pkt);
1518 struct iwl_extended_beacon_notif *beacon = (void *)pkt->data;
1519 struct iwl_extended_beacon_notif_v5 *beacon_v5 = (void *)pkt->data;
1520 struct ieee80211_vif *csa_vif;
1521 struct ieee80211_vif *tx_blocked_vif;
1522 struct agg_tx_status *agg_status;
1523 u16 status;
1524
1525 lockdep_assert_held(&mvm->mutex);
1526
1527 mvm->ap_last_beacon_gp2 = le32_to_cpu(beacon->gp2);
1528
1529 if (!iwl_mvm_is_short_beacon_notif_supported(mvm)) {
1530 struct iwl_tx_resp *beacon_notify_hdr =
1531 &beacon_v5->beacon_notify_hdr;
1532
1533 if (unlikely(pkt_len < sizeof(*beacon_v5)))
1534 return;
1535
1536 mvm->ibss_manager = beacon_v5->ibss_mgr_status != 0;
1537 agg_status = iwl_mvm_get_agg_status(mvm, beacon_notify_hdr);
1538 status = le16_to_cpu(agg_status->status) & TX_STATUS_MSK;
1539 IWL_DEBUG_RX(mvm,
1540 "beacon status %#x retries:%d tsf:0x%016llX gp2:0x%X rate:%d\n",
1541 status, beacon_notify_hdr->failure_frame,
1542 le64_to_cpu(beacon->tsf),
1543 mvm->ap_last_beacon_gp2,
1544 le32_to_cpu(beacon_notify_hdr->initial_rate));
1545 } else {
1546 if (unlikely(pkt_len < sizeof(*beacon)))
1547 return;
1548
1549 mvm->ibss_manager = beacon->ibss_mgr_status != 0;
1550 status = le32_to_cpu(beacon->status) & TX_STATUS_MSK;
1551 IWL_DEBUG_RX(mvm,
1552 "beacon status %#x tsf:0x%016llX gp2:0x%X\n",
1553 status, le64_to_cpu(beacon->tsf),
1554 mvm->ap_last_beacon_gp2);
1555 }
1556
1557 csa_vif = rcu_dereference_protected(mvm->csa_vif,
1558 lockdep_is_held(&mvm->mutex));
1559 if (unlikely(csa_vif && csa_vif->bss_conf.csa_active))
1560 iwl_mvm_csa_count_down(mvm, csa_vif, mvm->ap_last_beacon_gp2,
1561 (status == TX_STATUS_SUCCESS));
1562
1563 tx_blocked_vif = rcu_dereference_protected(mvm->csa_tx_blocked_vif,
1564 lockdep_is_held(&mvm->mutex));
1565 if (unlikely(tx_blocked_vif)) {
1566 struct iwl_mvm_vif *mvmvif =
1567 iwl_mvm_vif_from_mac80211(tx_blocked_vif);
1568
1569 /*
1570 * The channel switch is started and we have blocked the
1571 * stations. If this is the first beacon (the timeout wasn't
1572 * set), set the unblock timeout, otherwise countdown
1573 */
1574 if (!mvm->csa_tx_block_bcn_timeout)
1575 mvm->csa_tx_block_bcn_timeout =
1576 IWL_MVM_CS_UNBLOCK_TX_TIMEOUT;
1577 else
1578 mvm->csa_tx_block_bcn_timeout--;
1579
1580 /* Check if the timeout is expired, and unblock tx */
1581 if (mvm->csa_tx_block_bcn_timeout == 0) {
1582 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
1583 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
1584 }
1585 }
1586 }
1587
1588 static void
iwl_mvm_handle_missed_beacons_notif(struct iwl_mvm * mvm,const struct iwl_missed_beacons_notif * mb,struct iwl_rx_packet * pkt)1589 iwl_mvm_handle_missed_beacons_notif(struct iwl_mvm *mvm,
1590 const struct iwl_missed_beacons_notif *mb,
1591 struct iwl_rx_packet *pkt)
1592 {
1593 struct iwl_fw_dbg_trigger_missed_bcon *bcon_trig;
1594 struct iwl_fw_dbg_trigger_tlv *trigger;
1595 u32 stop_trig_missed_bcon, stop_trig_missed_bcon_since_rx;
1596 u32 rx_missed_bcon, rx_missed_bcon_since_rx;
1597 struct ieee80211_vif *vif;
1598 /* Id can be mac/link id depending on the notification version */
1599 u32 id = le32_to_cpu(mb->link_id);
1600 union iwl_dbg_tlv_tp_data tp_data = { .fw_pkt = pkt };
1601 u32 mac_type;
1602 int link_id = -1;
1603 u8 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
1604 MISSED_BEACONS_NOTIFICATION,
1605 0);
1606 u8 new_notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, MAC_CONF_GROUP,
1607 MISSED_BEACONS_NOTIF, 0);
1608
1609 /* If the firmware uses the new notification (from MAC_CONF_GROUP),
1610 * refer to that notification's version.
1611 * Note that the new notification from MAC_CONF_GROUP starts from
1612 * version 5.
1613 */
1614 if (new_notif_ver)
1615 notif_ver = new_notif_ver;
1616
1617 /* before version four the ID in the notification refers to mac ID */
1618 if (notif_ver < 4) {
1619 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, false);
1620 } else {
1621 struct ieee80211_bss_conf *bss_conf =
1622 iwl_mvm_rcu_fw_link_id_to_link_conf(mvm, id, false);
1623
1624 if (!bss_conf)
1625 return;
1626
1627 vif = bss_conf->vif;
1628 link_id = bss_conf->link_id;
1629 }
1630
1631 IWL_DEBUG_INFO(mvm,
1632 "missed bcn %s_id=%u, consecutive=%u (%u)\n",
1633 notif_ver < 4 ? "mac" : "link",
1634 id,
1635 le32_to_cpu(mb->consec_missed_beacons),
1636 le32_to_cpu(mb->consec_missed_beacons_since_last_rx));
1637
1638 if (!vif)
1639 return;
1640
1641 mac_type = iwl_mvm_get_mac_type(vif);
1642
1643 IWL_DEBUG_INFO(mvm, "missed beacon mac_type=%u,\n", mac_type);
1644
1645 mvm->trans->dbg.dump_file_name_ext_valid = true;
1646 snprintf(mvm->trans->dbg.dump_file_name_ext, IWL_FW_INI_MAX_NAME,
1647 "MacId_%d_MacType_%d", id, mac_type);
1648
1649 rx_missed_bcon = le32_to_cpu(mb->consec_missed_beacons);
1650 rx_missed_bcon_since_rx =
1651 le32_to_cpu(mb->consec_missed_beacons_since_last_rx);
1652 /*
1653 * TODO: the threshold should be adjusted based on latency conditions,
1654 * and/or in case of a CS flow on one of the other AP vifs.
1655 */
1656 if (rx_missed_bcon >= IWL_MVM_MISSED_BEACONS_THRESHOLD_LONG) {
1657 if (rx_missed_bcon_since_rx >= IWL_MVM_MISSED_BEACONS_SINCE_RX_THOLD) {
1658 iwl_mvm_connection_loss(mvm, vif, "missed beacons");
1659 } else {
1660 IWL_WARN(mvm,
1661 "missed beacons exceeds threshold, but receiving data. Stay connected, Expect bugs.\n");
1662 IWL_WARN(mvm,
1663 "missed_beacons:%d, missed_beacons_since_rx:%d\n",
1664 rx_missed_bcon, rx_missed_bcon_since_rx);
1665 }
1666 } else if (link_id >= 0 && hweight16(vif->active_links) > 1) {
1667 u32 scnd_lnk_bcn_lost = 0;
1668
1669 if (notif_ver >= 5 &&
1670 !IWL_FW_CHECK(mvm,
1671 le32_to_cpu(mb->other_link_id) == IWL_MVM_FW_LINK_ID_INVALID,
1672 "No data for other link id but we are in EMLSR active_links: 0x%x\n",
1673 vif->active_links))
1674 scnd_lnk_bcn_lost =
1675 le32_to_cpu(mb->consec_missed_beacons_other_link);
1676
1677 /* Exit EMLSR if we lost more than
1678 * IWL_MVM_MISSED_BEACONS_EXIT_ESR_THRESH beacons on boths links
1679 * OR more than IWL_MVM_BCN_LOSS_EXIT_ESR_THRESH on any link.
1680 */
1681 if ((rx_missed_bcon >= IWL_MVM_BCN_LOSS_EXIT_ESR_THRESH_2_LINKS &&
1682 scnd_lnk_bcn_lost >= IWL_MVM_BCN_LOSS_EXIT_ESR_THRESH_2_LINKS) ||
1683 rx_missed_bcon >= IWL_MVM_BCN_LOSS_EXIT_ESR_THRESH)
1684 iwl_mvm_exit_esr(mvm, vif,
1685 IWL_MVM_ESR_EXIT_MISSED_BEACON,
1686 iwl_mvm_get_primary_link(vif));
1687 } else if (rx_missed_bcon_since_rx > IWL_MVM_MISSED_BEACONS_THRESHOLD) {
1688 if (!iwl_mvm_has_new_tx_api(mvm))
1689 ieee80211_beacon_loss(vif);
1690 else
1691 ieee80211_cqm_beacon_loss_notify(vif, GFP_ATOMIC);
1692 }
1693
1694 iwl_dbg_tlv_time_point(&mvm->fwrt,
1695 IWL_FW_INI_TIME_POINT_MISSED_BEACONS, &tp_data);
1696
1697 trigger = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
1698 FW_DBG_TRIGGER_MISSED_BEACONS);
1699 if (!trigger)
1700 return;
1701
1702 bcon_trig = (void *)trigger->data;
1703 stop_trig_missed_bcon = le32_to_cpu(bcon_trig->stop_consec_missed_bcon);
1704 stop_trig_missed_bcon_since_rx =
1705 le32_to_cpu(bcon_trig->stop_consec_missed_bcon_since_rx);
1706
1707 /* TODO: implement start trigger */
1708
1709 if (rx_missed_bcon_since_rx >= stop_trig_missed_bcon_since_rx ||
1710 rx_missed_bcon >= stop_trig_missed_bcon)
1711 iwl_fw_dbg_collect_trig(&mvm->fwrt, trigger, NULL);
1712 }
1713
iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1714 void iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm *mvm,
1715 struct iwl_rx_cmd_buffer *rxb)
1716 {
1717 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1718
1719 iwl_mvm_handle_missed_beacons_notif(mvm, (const void *)pkt->data, pkt);
1720 }
1721
iwl_mvm_rx_missed_beacons_notif_legacy(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1722 void iwl_mvm_rx_missed_beacons_notif_legacy(struct iwl_mvm *mvm,
1723 struct iwl_rx_cmd_buffer *rxb)
1724 {
1725 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1726 const struct iwl_missed_beacons_notif_v4 *mb_v4 =
1727 (const void *)pkt->data;
1728 struct iwl_missed_beacons_notif mb = {
1729 .link_id = mb_v4->link_id,
1730 .consec_missed_beacons = mb_v4->consec_missed_beacons,
1731 .consec_missed_beacons_since_last_rx =
1732 mb_v4->consec_missed_beacons_since_last_rx,
1733 .other_link_id = cpu_to_le32(IWL_MVM_FW_LINK_ID_INVALID),
1734 };
1735
1736 iwl_mvm_handle_missed_beacons_notif(mvm, &mb, pkt);
1737 }
1738
iwl_mvm_rx_stored_beacon_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1739 void iwl_mvm_rx_stored_beacon_notif(struct iwl_mvm *mvm,
1740 struct iwl_rx_cmd_buffer *rxb)
1741 {
1742 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1743 unsigned int pkt_len = iwl_rx_packet_payload_len(pkt);
1744 struct iwl_stored_beacon_notif_common *sb = (void *)pkt->data;
1745 struct ieee80211_rx_status rx_status;
1746 struct sk_buff *skb;
1747 u8 *data;
1748 u32 size = le32_to_cpu(sb->byte_count);
1749 int ver = iwl_fw_lookup_cmd_ver(mvm->fw,
1750 WIDE_ID(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF),
1751 0);
1752
1753 if (size == 0)
1754 return;
1755
1756 /* handle per-version differences */
1757 if (ver <= 2) {
1758 struct iwl_stored_beacon_notif_v2 *sb_v2 = (void *)pkt->data;
1759
1760 if (pkt_len < struct_size(sb_v2, data, size))
1761 return;
1762
1763 data = sb_v2->data;
1764 } else {
1765 struct iwl_stored_beacon_notif_v3 *sb_v3 = (void *)pkt->data;
1766
1767 if (pkt_len < struct_size(sb_v3, data, size))
1768 return;
1769
1770 data = sb_v3->data;
1771 }
1772
1773 skb = alloc_skb(size, GFP_ATOMIC);
1774 if (!skb) {
1775 IWL_ERR(mvm, "alloc_skb failed\n");
1776 return;
1777 }
1778
1779 /* update rx_status according to the notification's metadata */
1780 memset(&rx_status, 0, sizeof(rx_status));
1781 rx_status.mactime = le64_to_cpu(sb->tsf);
1782 /* TSF as indicated by the firmware is at INA time */
1783 rx_status.flag |= RX_FLAG_MACTIME_PLCP_START;
1784 rx_status.device_timestamp = le32_to_cpu(sb->system_time);
1785 rx_status.band =
1786 (sb->band & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ?
1787 NL80211_BAND_2GHZ : NL80211_BAND_5GHZ;
1788 rx_status.freq =
1789 ieee80211_channel_to_frequency(le16_to_cpu(sb->channel),
1790 rx_status.band);
1791
1792 /* copy the data */
1793 skb_put_data(skb, data, size);
1794 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
1795
1796 /* pass it as regular rx to mac80211 */
1797 ieee80211_rx_napi(mvm->hw, NULL, skb, NULL);
1798 }
1799
iwl_mvm_probe_resp_data_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1800 void iwl_mvm_probe_resp_data_notif(struct iwl_mvm *mvm,
1801 struct iwl_rx_cmd_buffer *rxb)
1802 {
1803 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1804 struct iwl_probe_resp_data_notif *notif = (void *)pkt->data;
1805 struct iwl_probe_resp_data *old_data, *new_data;
1806 u32 id = le32_to_cpu(notif->mac_id);
1807 struct ieee80211_vif *vif;
1808 struct iwl_mvm_vif *mvmvif;
1809
1810 IWL_DEBUG_INFO(mvm, "Probe response data notif: noa %d, csa %d\n",
1811 notif->noa_active, notif->csa_counter);
1812
1813 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, false);
1814 if (!vif)
1815 return;
1816
1817 mvmvif = iwl_mvm_vif_from_mac80211(vif);
1818
1819 new_data = kzalloc(sizeof(*new_data), GFP_KERNEL);
1820 if (!new_data)
1821 return;
1822
1823 memcpy(&new_data->notif, notif, sizeof(new_data->notif));
1824
1825 /* noa_attr contains 1 reserved byte, need to substruct it */
1826 new_data->noa_len = sizeof(struct ieee80211_vendor_ie) +
1827 sizeof(new_data->notif.noa_attr) - 1;
1828
1829 /*
1830 * If it's a one time NoA, only one descriptor is needed,
1831 * adjust the length according to len_low.
1832 */
1833 if (new_data->notif.noa_attr.len_low ==
1834 sizeof(struct ieee80211_p2p_noa_desc) + 2)
1835 new_data->noa_len -= sizeof(struct ieee80211_p2p_noa_desc);
1836
1837 old_data = rcu_dereference_protected(mvmvif->deflink.probe_resp_data,
1838 lockdep_is_held(&mvmvif->mvm->mutex));
1839 rcu_assign_pointer(mvmvif->deflink.probe_resp_data, new_data);
1840
1841 if (old_data)
1842 kfree_rcu(old_data, rcu_head);
1843
1844 if (notif->csa_counter != IWL_PROBE_RESP_DATA_NO_CSA &&
1845 notif->csa_counter >= 1)
1846 ieee80211_beacon_set_cntdwn(vif, notif->csa_counter);
1847 }
1848
iwl_mvm_channel_switch_start_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1849 void iwl_mvm_channel_switch_start_notif(struct iwl_mvm *mvm,
1850 struct iwl_rx_cmd_buffer *rxb)
1851 {
1852 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1853 struct ieee80211_vif *csa_vif, *vif;
1854 struct iwl_mvm_vif *mvmvif, *csa_mvmvif;
1855 u32 id_n_color, csa_id;
1856 /* save mac_id or link_id to use later to cancel csa if needed */
1857 u32 id;
1858 u32 mac_link_id = 0;
1859 u8 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, MAC_CONF_GROUP,
1860 CHANNEL_SWITCH_START_NOTIF, 0);
1861 bool csa_active;
1862
1863 rcu_read_lock();
1864
1865 if (notif_ver < 3) {
1866 struct iwl_channel_switch_start_notif_v1 *notif = (void *)pkt->data;
1867 u32 mac_id;
1868
1869 id_n_color = le32_to_cpu(notif->id_and_color);
1870 mac_id = id_n_color & FW_CTXT_ID_MSK;
1871
1872 vif = iwl_mvm_rcu_dereference_vif_id(mvm, mac_id, true);
1873 if (!vif)
1874 goto out_unlock;
1875
1876 id = mac_id;
1877 csa_active = vif->bss_conf.csa_active;
1878 } else {
1879 struct iwl_channel_switch_start_notif *notif = (void *)pkt->data;
1880 u32 link_id = le32_to_cpu(notif->link_id);
1881 struct ieee80211_bss_conf *bss_conf =
1882 iwl_mvm_rcu_fw_link_id_to_link_conf(mvm, link_id, true);
1883
1884 if (!bss_conf)
1885 goto out_unlock;
1886
1887 id = link_id;
1888 mac_link_id = bss_conf->link_id;
1889 vif = bss_conf->vif;
1890 csa_active = bss_conf->csa_active;
1891 }
1892
1893 mvmvif = iwl_mvm_vif_from_mac80211(vif);
1894 if (notif_ver >= 3)
1895 id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color);
1896
1897 switch (vif->type) {
1898 case NL80211_IFTYPE_AP:
1899 csa_vif = rcu_dereference(mvm->csa_vif);
1900 if (WARN_ON(!csa_vif || !csa_vif->bss_conf.csa_active ||
1901 csa_vif != vif))
1902 goto out_unlock;
1903
1904 csa_mvmvif = iwl_mvm_vif_from_mac80211(csa_vif);
1905 csa_id = FW_CMD_ID_AND_COLOR(csa_mvmvif->id, csa_mvmvif->color);
1906 if (WARN(csa_id != id_n_color,
1907 "channel switch noa notification on unexpected vif (csa_vif=%d, notif=%d)",
1908 csa_id, id_n_color))
1909 goto out_unlock;
1910
1911 IWL_DEBUG_INFO(mvm, "Channel Switch Started Notification\n");
1912
1913 schedule_delayed_work(&mvm->cs_tx_unblock_dwork,
1914 msecs_to_jiffies(IWL_MVM_CS_UNBLOCK_TX_TIMEOUT *
1915 csa_vif->bss_conf.beacon_int));
1916
1917 ieee80211_csa_finish(csa_vif, 0);
1918
1919 rcu_read_unlock();
1920
1921 RCU_INIT_POINTER(mvm->csa_vif, NULL);
1922 return;
1923 case NL80211_IFTYPE_STATION:
1924 /*
1925 * if we don't know about an ongoing channel switch,
1926 * make sure FW cancels it
1927 */
1928 if (iwl_fw_lookup_notif_ver(mvm->fw, MAC_CONF_GROUP,
1929 CHANNEL_SWITCH_ERROR_NOTIF,
1930 0) && !csa_active) {
1931 IWL_DEBUG_INFO(mvm, "Channel Switch was canceled\n");
1932 iwl_mvm_cancel_channel_switch(mvm, vif, id);
1933 break;
1934 }
1935
1936 iwl_mvm_csa_client_absent(mvm, vif);
1937 cancel_delayed_work(&mvmvif->csa_work);
1938 ieee80211_chswitch_done(vif, true, mac_link_id);
1939 break;
1940 default:
1941 /* should never happen */
1942 WARN_ON_ONCE(1);
1943 break;
1944 }
1945 out_unlock:
1946 rcu_read_unlock();
1947 }
1948
iwl_mvm_channel_switch_error_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1949 void iwl_mvm_channel_switch_error_notif(struct iwl_mvm *mvm,
1950 struct iwl_rx_cmd_buffer *rxb)
1951 {
1952 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1953 struct iwl_channel_switch_error_notif *notif = (void *)pkt->data;
1954 struct ieee80211_vif *vif;
1955 u32 id = le32_to_cpu(notif->link_id);
1956 u32 csa_err_mask = le32_to_cpu(notif->csa_err_mask);
1957
1958 rcu_read_lock();
1959 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true);
1960 if (!vif) {
1961 rcu_read_unlock();
1962 return;
1963 }
1964
1965 IWL_DEBUG_INFO(mvm, "FW reports CSA error: id=%u, csa_err_mask=%u\n",
1966 id, csa_err_mask);
1967 if (csa_err_mask & (CS_ERR_COUNT_ERROR |
1968 CS_ERR_LONG_DELAY_AFTER_CS |
1969 CS_ERR_TX_BLOCK_TIMER_EXPIRED))
1970 ieee80211_channel_switch_disconnect(vif, true);
1971 rcu_read_unlock();
1972 }
1973
iwl_mvm_rx_missed_vap_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1974 void iwl_mvm_rx_missed_vap_notif(struct iwl_mvm *mvm,
1975 struct iwl_rx_cmd_buffer *rxb)
1976 {
1977 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1978 struct iwl_missed_vap_notif *mb = (void *)pkt->data;
1979 struct ieee80211_vif *vif;
1980 u32 id = le32_to_cpu(mb->mac_id);
1981
1982 IWL_DEBUG_INFO(mvm,
1983 "missed_vap notify mac_id=%u, num_beacon_intervals_elapsed=%u, profile_periodicity=%u\n",
1984 le32_to_cpu(mb->mac_id),
1985 mb->num_beacon_intervals_elapsed,
1986 mb->profile_periodicity);
1987
1988 rcu_read_lock();
1989
1990 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true);
1991 if (vif)
1992 iwl_mvm_connection_loss(mvm, vif, "missed vap beacon");
1993
1994 rcu_read_unlock();
1995 }
1996