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 ieee80211_bss_conf * link_conf,__le32 * cck_rates,__le32 * ofdm_rates)415 void iwl_mvm_set_fw_basic_rates(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
416 struct ieee80211_bss_conf *link_conf,
417 __le32 *cck_rates, __le32 *ofdm_rates)
418 {
419 struct ieee80211_chanctx_conf *chanctx;
420 u8 cck_ack_rates = 0, ofdm_ack_rates = 0;
421
422 rcu_read_lock();
423 chanctx = rcu_dereference(link_conf->chanctx_conf);
424 iwl_mvm_ack_rates(mvm, vif, chanctx ? chanctx->def.chan->band
425 : NL80211_BAND_2GHZ,
426 &cck_ack_rates, &ofdm_ack_rates);
427
428 rcu_read_unlock();
429
430 *cck_rates = cpu_to_le32((u32)cck_ack_rates);
431 *ofdm_rates = cpu_to_le32((u32)ofdm_ack_rates);
432 }
433
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)434 void iwl_mvm_set_fw_protection_flags(struct iwl_mvm *mvm,
435 struct ieee80211_vif *vif,
436 struct ieee80211_bss_conf *link_conf,
437 __le32 *protection_flags, u32 ht_flag,
438 u32 tgg_flag)
439 {
440 /* for both sta and ap, ht_operation_mode hold the protection_mode */
441 u8 protection_mode = link_conf->ht_operation_mode &
442 IEEE80211_HT_OP_MODE_PROTECTION;
443 bool ht_enabled = !!(link_conf->ht_operation_mode &
444 IEEE80211_HT_OP_MODE_PROTECTION);
445
446 if (link_conf->use_cts_prot)
447 *protection_flags |= cpu_to_le32(tgg_flag);
448
449 IWL_DEBUG_RATE(mvm, "use_cts_prot %d, ht_operation_mode %d\n",
450 link_conf->use_cts_prot,
451 link_conf->ht_operation_mode);
452
453 if (!ht_enabled)
454 return;
455
456 IWL_DEBUG_RATE(mvm, "protection mode set to %d\n", protection_mode);
457 /*
458 * See section 9.23.3.1 of IEEE 80211-2012.
459 * Nongreenfield HT STAs Present is not supported.
460 */
461 switch (protection_mode) {
462 case IEEE80211_HT_OP_MODE_PROTECTION_NONE:
463 break;
464 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER:
465 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
466 *protection_flags |= cpu_to_le32(ht_flag);
467 break;
468 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
469 /* Protect when channel wider than 20MHz */
470 if (link_conf->chanreq.oper.width > NL80211_CHAN_WIDTH_20)
471 *protection_flags |= cpu_to_le32(ht_flag);
472 break;
473 default:
474 IWL_ERR(mvm, "Illegal protection mode %d\n",
475 protection_mode);
476 break;
477 }
478 }
479
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)480 void iwl_mvm_set_fw_qos_params(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
481 struct ieee80211_bss_conf *link_conf,
482 struct iwl_ac_qos *ac, __le32 *qos_flags)
483 {
484 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
485 struct iwl_mvm_vif_link_info *mvm_link =
486 mvmvif->link[link_conf->link_id];
487 int i;
488
489 if (!mvm_link)
490 return;
491
492 for (i = 0; i < IEEE80211_NUM_ACS; i++) {
493 u8 txf = iwl_mvm_mac_ac_to_tx_fifo(mvm, i);
494 u8 ucode_ac = iwl_mvm_mac80211_ac_to_ucode_ac(i);
495
496 ac[ucode_ac].cw_min =
497 cpu_to_le16(mvm_link->queue_params[i].cw_min);
498 ac[ucode_ac].cw_max =
499 cpu_to_le16(mvm_link->queue_params[i].cw_max);
500 ac[ucode_ac].edca_txop =
501 cpu_to_le16(mvm_link->queue_params[i].txop * 32);
502 ac[ucode_ac].aifsn = mvm_link->queue_params[i].aifs;
503 ac[ucode_ac].fifos_mask = BIT(txf);
504 }
505
506 if (link_conf->qos)
507 *qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA);
508
509 if (link_conf->chanreq.oper.width != NL80211_CHAN_WIDTH_20_NOHT)
510 *qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN);
511 }
512
iwl_mvm_get_mac_type(struct ieee80211_vif * vif)513 int iwl_mvm_get_mac_type(struct ieee80211_vif *vif)
514 {
515 u32 mac_type = FW_MAC_TYPE_BSS_STA;
516
517 switch (vif->type) {
518 case NL80211_IFTYPE_STATION:
519 if (vif->p2p)
520 mac_type = FW_MAC_TYPE_P2P_STA;
521 else
522 mac_type = FW_MAC_TYPE_BSS_STA;
523 break;
524 case NL80211_IFTYPE_AP:
525 mac_type = FW_MAC_TYPE_GO;
526 break;
527 case NL80211_IFTYPE_MONITOR:
528 mac_type = FW_MAC_TYPE_LISTENER;
529 break;
530 case NL80211_IFTYPE_P2P_DEVICE:
531 mac_type = FW_MAC_TYPE_P2P_DEVICE;
532 break;
533 case NL80211_IFTYPE_ADHOC:
534 mac_type = FW_MAC_TYPE_IBSS;
535 break;
536 default:
537 WARN_ON_ONCE(1);
538 }
539 return mac_type;
540 }
541
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)542 static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm,
543 struct ieee80211_vif *vif,
544 struct iwl_mac_ctx_cmd *cmd,
545 const u8 *bssid_override,
546 u32 action)
547 {
548 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
549 const u8 *bssid = bssid_override ?: vif->bss_conf.bssid;
550 u32 ht_flag;
551
552 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
553 mvmvif->color));
554 cmd->action = cpu_to_le32(action);
555 cmd->mac_type = cpu_to_le32(iwl_mvm_get_mac_type(vif));
556
557 cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id);
558
559 memcpy(cmd->node_addr, vif->addr, ETH_ALEN);
560
561 if (bssid)
562 memcpy(cmd->bssid_addr, bssid, ETH_ALEN);
563 else
564 eth_broadcast_addr(cmd->bssid_addr);
565
566 iwl_mvm_set_fw_basic_rates(mvm, vif, &vif->bss_conf, &cmd->cck_rates,
567 &cmd->ofdm_rates);
568
569 cmd->cck_short_preamble =
570 cpu_to_le32(vif->bss_conf.use_short_preamble ?
571 MAC_FLG_SHORT_PREAMBLE : 0);
572 cmd->short_slot =
573 cpu_to_le32(vif->bss_conf.use_short_slot ?
574 MAC_FLG_SHORT_SLOT : 0);
575
576 cmd->filter_flags = 0;
577
578 iwl_mvm_set_fw_qos_params(mvm, vif, &vif->bss_conf, cmd->ac,
579 &cmd->qos_flags);
580
581 /* The fw does not distinguish between ht and fat */
582 ht_flag = MAC_PROT_FLG_HT_PROT | MAC_PROT_FLG_FAT_PROT;
583 iwl_mvm_set_fw_protection_flags(mvm, vif, &vif->bss_conf,
584 &cmd->protection_flags,
585 ht_flag, MAC_PROT_FLG_TGG_PROTECT);
586 }
587
iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm * mvm,struct iwl_mac_ctx_cmd * cmd)588 static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm *mvm,
589 struct iwl_mac_ctx_cmd *cmd)
590 {
591 int ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0,
592 sizeof(*cmd), cmd);
593 if (ret)
594 IWL_ERR(mvm, "Failed to send MAC_CONTEXT_CMD (action:%d): %d\n",
595 le32_to_cpu(cmd->action), ret);
596 return ret;
597 }
598
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)599 void iwl_mvm_set_fw_dtim_tbtt(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
600 struct ieee80211_bss_conf *link_conf,
601 __le64 *dtim_tsf, __le32 *dtim_time,
602 __le32 *assoc_beacon_arrive_time)
603 {
604 u32 dtim_offs;
605
606 /*
607 * The DTIM count counts down, so when it is N that means N
608 * more beacon intervals happen until the DTIM TBTT. Therefore
609 * add this to the current time. If that ends up being in the
610 * future, the firmware will handle it.
611 *
612 * Also note that the system_timestamp (which we get here as
613 * "sync_device_ts") and TSF timestamp aren't at exactly the
614 * same offset in the frame -- the TSF is at the first symbol
615 * of the TSF, the system timestamp is at signal acquisition
616 * time. This means there's an offset between them of at most
617 * a few hundred microseconds (24 * 8 bits + PLCP time gives
618 * 384us in the longest case), this is currently not relevant
619 * as the firmware wakes up around 2ms before the TBTT.
620 */
621 dtim_offs = link_conf->sync_dtim_count *
622 link_conf->beacon_int;
623 /* convert TU to usecs */
624 dtim_offs *= 1024;
625
626 *dtim_tsf =
627 cpu_to_le64(link_conf->sync_tsf + dtim_offs);
628 *dtim_time =
629 cpu_to_le32(link_conf->sync_device_ts + dtim_offs);
630 *assoc_beacon_arrive_time =
631 cpu_to_le32(link_conf->sync_device_ts);
632
633 IWL_DEBUG_INFO(mvm, "DTIM TBTT is 0x%llx/0x%x, offset %d\n",
634 le64_to_cpu(*dtim_tsf),
635 le32_to_cpu(*dtim_time),
636 dtim_offs);
637 }
638
iwl_mvm_mac_ctxt_cmd_p2p_sta_get_oppps_ctwin(struct iwl_mvm * mvm,struct ieee80211_vif * vif)639 __le32 iwl_mvm_mac_ctxt_cmd_p2p_sta_get_oppps_ctwin(struct iwl_mvm *mvm,
640 struct ieee80211_vif *vif)
641 {
642 struct ieee80211_p2p_noa_attr *noa =
643 &vif->bss_conf.p2p_noa_attr;
644
645 return cpu_to_le32(noa->oppps_ctwindow &
646 IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
647 }
648
iwl_mvm_mac_ctxt_cmd_sta_get_twt_policy(struct iwl_mvm * mvm,struct ieee80211_vif * vif)649 u32 iwl_mvm_mac_ctxt_cmd_sta_get_twt_policy(struct iwl_mvm *mvm,
650 struct ieee80211_vif *vif)
651 {
652 u32 twt_policy = 0;
653
654 if (vif->bss_conf.twt_requester && IWL_MVM_USE_TWT)
655 twt_policy |= TWT_SUPPORTED;
656 if (vif->bss_conf.twt_protected)
657 twt_policy |= PROTECTED_TWT_SUPPORTED;
658 if (vif->bss_conf.twt_broadcast)
659 twt_policy |= BROADCAST_TWT_SUPPORTED;
660
661 return twt_policy;
662 }
663
iwl_mvm_mac_ctxt_cmd_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u32 action,bool force_assoc_off,const u8 * bssid_override)664 static int iwl_mvm_mac_ctxt_cmd_sta(struct iwl_mvm *mvm,
665 struct ieee80211_vif *vif,
666 u32 action, bool force_assoc_off,
667 const u8 *bssid_override)
668 {
669 struct iwl_mac_ctx_cmd cmd = {};
670 struct iwl_mac_data_sta *ctxt_sta;
671
672 WARN_ON(vif->type != NL80211_IFTYPE_STATION);
673
674 /* Fill the common data for all mac context types */
675 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, bssid_override, action);
676
677 /*
678 * We always want to hear MCAST frames, if we're not authorized yet,
679 * we'll drop them.
680 */
681 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_ACCEPT_GRP);
682
683 if (vif->p2p) {
684 cmd.p2p_sta.ctwin =
685 iwl_mvm_mac_ctxt_cmd_p2p_sta_get_oppps_ctwin(mvm, vif);
686
687 ctxt_sta = &cmd.p2p_sta.sta;
688 } else {
689 ctxt_sta = &cmd.sta;
690 }
691
692 /* We need the dtim_period to set the MAC as associated */
693 if (vif->cfg.assoc && vif->bss_conf.dtim_period &&
694 !force_assoc_off) {
695 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
696
697 iwl_mvm_set_fw_dtim_tbtt(mvm, vif, &vif->bss_conf,
698 &ctxt_sta->dtim_tsf,
699 &ctxt_sta->dtim_time,
700 &ctxt_sta->assoc_beacon_arrive_time);
701
702 ctxt_sta->is_assoc = cpu_to_le32(1);
703
704 if (!mvmvif->authorized &&
705 fw_has_capa(&mvm->fw->ucode_capa,
706 IWL_UCODE_TLV_CAPA_COEX_HIGH_PRIO))
707 ctxt_sta->data_policy |=
708 cpu_to_le32(COEX_HIGH_PRIORITY_ENABLE);
709 } else {
710 ctxt_sta->is_assoc = cpu_to_le32(0);
711
712 /* Allow beacons to pass through as long as we are not
713 * associated, or we do not have dtim period information.
714 */
715 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON);
716 }
717
718 ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int);
719 ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
720 vif->bss_conf.dtim_period);
721
722 ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval);
723 ctxt_sta->assoc_id = cpu_to_le32(vif->cfg.aid);
724
725 if (vif->probe_req_reg && vif->cfg.assoc && vif->p2p)
726 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
727
728 if (vif->bss_conf.he_support && !iwlwifi_mod_params.disable_11ax) {
729 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_11AX);
730 ctxt_sta->data_policy |=
731 cpu_to_le32(iwl_mvm_mac_ctxt_cmd_sta_get_twt_policy(mvm, vif));
732 }
733
734
735 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
736 }
737
iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u32 action)738 static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm,
739 struct ieee80211_vif *vif,
740 u32 action)
741 {
742 struct iwl_mac_ctx_cmd cmd = {};
743 u32 tfd_queue_msk = 0;
744 int ret;
745
746 WARN_ON(vif->type != NL80211_IFTYPE_MONITOR);
747
748 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
749
750 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROMISC |
751 MAC_FILTER_IN_CONTROL_AND_MGMT |
752 MAC_FILTER_IN_BEACON |
753 MAC_FILTER_IN_PROBE_REQUEST |
754 MAC_FILTER_IN_CRC32 |
755 MAC_FILTER_ACCEPT_GRP);
756 ieee80211_hw_set(mvm->hw, RX_INCLUDES_FCS);
757
758 /*
759 * the queue mask is only relevant for old TX API, and
760 * mvm->snif_queue isn't set here (it's still set to
761 * IWL_MVM_INVALID_QUEUE so the BIT() of it is UB)
762 */
763 if (!iwl_mvm_has_new_tx_api(mvm))
764 tfd_queue_msk = BIT(mvm->snif_queue);
765
766 /* Allocate sniffer station */
767 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->snif_sta, tfd_queue_msk,
768 vif->type, IWL_STA_GENERAL_PURPOSE);
769 if (ret)
770 return ret;
771
772 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
773 }
774
iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u32 action)775 static int iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm *mvm,
776 struct ieee80211_vif *vif,
777 u32 action)
778 {
779 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
780 struct iwl_mac_ctx_cmd cmd = {};
781
782 WARN_ON(vif->type != NL80211_IFTYPE_ADHOC);
783
784 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
785
786 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_BEACON |
787 MAC_FILTER_IN_PROBE_REQUEST |
788 MAC_FILTER_ACCEPT_GRP);
789
790 /* cmd.ibss.beacon_time/cmd.ibss.beacon_tsf are curently ignored */
791 cmd.ibss.bi = cpu_to_le32(vif->bss_conf.beacon_int);
792
793 /* TODO: Assumes that the beacon id == mac context id */
794 cmd.ibss.beacon_template = cpu_to_le32(mvmvif->id);
795
796 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
797 }
798
799 struct iwl_mvm_go_iterator_data {
800 bool go_active;
801 };
802
iwl_mvm_go_iterator(void * _data,u8 * mac,struct ieee80211_vif * vif)803 static void iwl_mvm_go_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif)
804 {
805 struct iwl_mvm_go_iterator_data *data = _data;
806 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
807
808 if (vif->type == NL80211_IFTYPE_AP && vif->p2p &&
809 mvmvif->ap_ibss_active)
810 data->go_active = true;
811 }
812
iwl_mac_ctxt_p2p_dev_has_extended_disc(struct iwl_mvm * mvm,struct ieee80211_vif * vif)813 __le32 iwl_mac_ctxt_p2p_dev_has_extended_disc(struct iwl_mvm *mvm,
814 struct ieee80211_vif *vif)
815 {
816 struct iwl_mvm_go_iterator_data data = {};
817
818 /*
819 * This flag should be set to true when the P2P Device is
820 * discoverable and there is at least another active P2P GO. Settings
821 * this flag will allow the P2P Device to be discoverable on other
822 * channels in addition to its listen channel.
823 * Note that this flag should not be set in other cases as it opens the
824 * Rx filters on all MAC and increases the number of interrupts.
825 */
826 ieee80211_iterate_active_interfaces_atomic(
827 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
828 iwl_mvm_go_iterator, &data);
829
830 return cpu_to_le32(data.go_active ? 1 : 0);
831 }
832
iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u32 action)833 static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm,
834 struct ieee80211_vif *vif,
835 u32 action)
836 {
837 struct iwl_mac_ctx_cmd cmd = {};
838
839 WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE);
840
841 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
842
843 cmd.p2p_dev.is_disc_extended =
844 iwl_mac_ctxt_p2p_dev_has_extended_disc(mvm, vif);
845
846 /* Override the filter flags to accept only probe requests */
847 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
848
849 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
850 }
851
iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm * mvm,__le32 * tim_index,__le32 * tim_size,u8 * beacon,u32 frame_size)852 void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm,
853 __le32 *tim_index, __le32 *tim_size,
854 u8 *beacon, u32 frame_size)
855 {
856 u32 tim_idx;
857 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
858
859 /* The index is relative to frame start but we start looking at the
860 * variable-length part of the beacon. */
861 tim_idx = mgmt->u.beacon.variable - beacon;
862
863 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
864 while ((tim_idx < (frame_size - 2)) &&
865 (beacon[tim_idx] != WLAN_EID_TIM))
866 tim_idx += beacon[tim_idx+1] + 2;
867
868 /* If TIM field was found, set variables */
869 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
870 *tim_index = cpu_to_le32(tim_idx);
871 *tim_size = cpu_to_le32((u32)beacon[tim_idx + 1]);
872 } else {
873 IWL_WARN(mvm, "Unable to find TIM Element in beacon\n");
874 }
875 }
876
iwl_mvm_find_ie_offset(u8 * beacon,u8 eid,u32 frame_size)877 u32 iwl_mvm_find_ie_offset(u8 *beacon, u8 eid, u32 frame_size)
878 {
879 struct ieee80211_mgmt *mgmt = (void *)beacon;
880 const u8 *ie;
881
882 if (WARN_ON_ONCE(frame_size <= (mgmt->u.beacon.variable - beacon)))
883 return 0;
884
885 frame_size -= mgmt->u.beacon.variable - beacon;
886
887 ie = cfg80211_find_ie(eid, mgmt->u.beacon.variable, frame_size);
888 if (!ie)
889 return 0;
890
891 return ie - beacon;
892 }
893
iwl_mvm_mac_ctxt_get_lowest_rate(struct iwl_mvm * mvm,struct ieee80211_tx_info * info,struct ieee80211_vif * vif)894 u8 iwl_mvm_mac_ctxt_get_lowest_rate(struct iwl_mvm *mvm,
895 struct ieee80211_tx_info *info,
896 struct ieee80211_vif *vif)
897 {
898 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
899 struct ieee80211_supported_band *sband;
900 unsigned long basic = vif->bss_conf.basic_rates;
901 u16 lowest_cck = IWL_RATE_COUNT, lowest_ofdm = IWL_RATE_COUNT;
902 u32 link_id = u32_get_bits(info->control.flags,
903 IEEE80211_TX_CTRL_MLO_LINK);
904 u8 band = info->band;
905 u8 rate;
906 u32 i;
907
908 if (link_id == IEEE80211_LINK_UNSPECIFIED && ieee80211_vif_is_mld(vif)) {
909 for (i = 0; i < ARRAY_SIZE(mvmvif->link); i++) {
910 if (!mvmvif->link[i])
911 continue;
912 /* shouldn't do this when >1 link is active */
913 WARN_ON_ONCE(link_id != IEEE80211_LINK_UNSPECIFIED);
914 link_id = i;
915 }
916 }
917
918 if (link_id < IEEE80211_LINK_UNSPECIFIED) {
919 struct ieee80211_bss_conf *link_conf;
920
921 rcu_read_lock();
922 link_conf = rcu_dereference(vif->link_conf[link_id]);
923 if (link_conf) {
924 basic = link_conf->basic_rates;
925 if (link_conf->chanreq.oper.chan)
926 band = link_conf->chanreq.oper.chan->band;
927 }
928 rcu_read_unlock();
929 }
930
931 sband = mvm->hw->wiphy->bands[band];
932 for_each_set_bit(i, &basic, BITS_PER_LONG) {
933 u16 hw = sband->bitrates[i].hw_value;
934
935 if (hw >= IWL_FIRST_OFDM_RATE) {
936 if (lowest_ofdm > hw)
937 lowest_ofdm = hw;
938 } else if (lowest_cck > hw) {
939 lowest_cck = hw;
940 }
941 }
942
943 if (band == NL80211_BAND_2GHZ && !vif->p2p &&
944 vif->type != NL80211_IFTYPE_P2P_DEVICE &&
945 !(info->flags & IEEE80211_TX_CTL_NO_CCK_RATE)) {
946 if (lowest_cck != IWL_RATE_COUNT)
947 rate = lowest_cck;
948 else if (lowest_ofdm != IWL_RATE_COUNT)
949 rate = lowest_ofdm;
950 else
951 rate = IWL_RATE_1M_INDEX;
952 } else if (lowest_ofdm != IWL_RATE_COUNT) {
953 rate = lowest_ofdm;
954 } else {
955 rate = IWL_RATE_6M_INDEX;
956 }
957
958 return rate;
959 }
960
iwl_mvm_mac_ctxt_get_beacon_flags(const struct iwl_fw * fw,u8 rate_idx)961 u16 iwl_mvm_mac_ctxt_get_beacon_flags(const struct iwl_fw *fw, u8 rate_idx)
962 {
963 u16 flags = iwl_mvm_mac80211_idx_to_hwrate(fw, rate_idx);
964 bool is_new_rate = iwl_fw_lookup_cmd_ver(fw, BEACON_TEMPLATE_CMD, 0) > 10;
965
966 if (rate_idx <= IWL_FIRST_CCK_RATE)
967 flags |= is_new_rate ? IWL_MAC_BEACON_CCK
968 : IWL_MAC_BEACON_CCK_V1;
969
970 return flags;
971 }
972
iwl_mvm_mac_ctxt_get_beacon_rate(struct iwl_mvm * mvm,struct ieee80211_tx_info * info,struct ieee80211_vif * vif)973 u8 iwl_mvm_mac_ctxt_get_beacon_rate(struct iwl_mvm *mvm,
974 struct ieee80211_tx_info *info,
975 struct ieee80211_vif *vif)
976 {
977 struct ieee80211_supported_band *sband =
978 mvm->hw->wiphy->bands[info->band];
979 u32 legacy = vif->bss_conf.beacon_tx_rate.control[info->band].legacy;
980
981 /* if beacon rate was configured try using it */
982 if (hweight32(legacy) == 1) {
983 u32 rate = ffs(legacy) - 1;
984
985 return sband->bitrates[rate].hw_value;
986 }
987
988 return iwl_mvm_mac_ctxt_get_lowest_rate(mvm, info, vif);
989 }
990
iwl_mvm_mac_ctxt_set_tx(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct sk_buff * beacon,struct iwl_tx_cmd * tx)991 static void iwl_mvm_mac_ctxt_set_tx(struct iwl_mvm *mvm,
992 struct ieee80211_vif *vif,
993 struct sk_buff *beacon,
994 struct iwl_tx_cmd *tx)
995 {
996 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
997 struct ieee80211_tx_info *info;
998 u8 rate;
999 u32 tx_flags;
1000
1001 info = IEEE80211_SKB_CB(beacon);
1002
1003 /* Set up TX command fields */
1004 tx->len = cpu_to_le16((u16)beacon->len);
1005 tx->sta_id = mvmvif->deflink.bcast_sta.sta_id;
1006 tx->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
1007 tx_flags = TX_CMD_FLG_SEQ_CTL | TX_CMD_FLG_TSF;
1008 tx_flags |=
1009 iwl_mvm_bt_coex_tx_prio(mvm, (void *)beacon->data, info, 0) <<
1010 TX_CMD_FLG_BT_PRIO_POS;
1011 tx->tx_flags = cpu_to_le32(tx_flags);
1012
1013 if (!fw_has_capa(&mvm->fw->ucode_capa,
1014 IWL_UCODE_TLV_CAPA_BEACON_ANT_SELECTION)) {
1015 iwl_mvm_toggle_tx_ant(mvm, &mvm->mgmt_last_antenna_idx);
1016
1017 tx->rate_n_flags =
1018 cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) <<
1019 RATE_MCS_ANT_POS);
1020 }
1021
1022 rate = iwl_mvm_mac_ctxt_get_beacon_rate(mvm, info, vif);
1023
1024 tx->rate_n_flags |=
1025 cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(mvm->fw, rate));
1026 if (rate == IWL_FIRST_CCK_RATE)
1027 tx->rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK_V1);
1028
1029 }
1030
iwl_mvm_mac_ctxt_send_beacon_cmd(struct iwl_mvm * mvm,struct sk_buff * beacon,void * data,int len)1031 int iwl_mvm_mac_ctxt_send_beacon_cmd(struct iwl_mvm *mvm,
1032 struct sk_buff *beacon,
1033 void *data, int len)
1034 {
1035 struct iwl_host_cmd cmd = {
1036 .id = BEACON_TEMPLATE_CMD,
1037 .flags = CMD_ASYNC,
1038 };
1039
1040 cmd.len[0] = len;
1041 cmd.data[0] = data;
1042 cmd.dataflags[0] = 0;
1043 cmd.len[1] = beacon->len;
1044 cmd.data[1] = beacon->data;
1045 cmd.dataflags[1] = IWL_HCMD_DFL_DUP;
1046
1047 return iwl_mvm_send_cmd(mvm, &cmd);
1048 }
1049
iwl_mvm_mac_ctxt_send_beacon_v6(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct sk_buff * beacon)1050 static int iwl_mvm_mac_ctxt_send_beacon_v6(struct iwl_mvm *mvm,
1051 struct ieee80211_vif *vif,
1052 struct sk_buff *beacon)
1053 {
1054 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1055 struct iwl_mac_beacon_cmd_v6 beacon_cmd = {};
1056
1057 iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx);
1058
1059 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
1060
1061 if (vif->type == NL80211_IFTYPE_AP)
1062 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
1063 &beacon_cmd.tim_size,
1064 beacon->data, beacon->len);
1065
1066 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
1067 sizeof(beacon_cmd));
1068 }
1069
iwl_mvm_mac_ctxt_send_beacon_v7(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct sk_buff * beacon)1070 static int iwl_mvm_mac_ctxt_send_beacon_v7(struct iwl_mvm *mvm,
1071 struct ieee80211_vif *vif,
1072 struct sk_buff *beacon)
1073 {
1074 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1075 struct iwl_mac_beacon_cmd_v7 beacon_cmd = {};
1076
1077 iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx);
1078
1079 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
1080
1081 if (vif->type == NL80211_IFTYPE_AP)
1082 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
1083 &beacon_cmd.tim_size,
1084 beacon->data, beacon->len);
1085
1086 beacon_cmd.csa_offset =
1087 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
1088 WLAN_EID_CHANNEL_SWITCH,
1089 beacon->len));
1090 beacon_cmd.ecsa_offset =
1091 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
1092 WLAN_EID_EXT_CHANSWITCH_ANN,
1093 beacon->len));
1094
1095 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
1096 sizeof(beacon_cmd));
1097 }
1098
iwl_mvm_enable_fils(struct iwl_mvm * mvm,struct ieee80211_chanctx_conf * ctx)1099 bool iwl_mvm_enable_fils(struct iwl_mvm *mvm,
1100 struct ieee80211_chanctx_conf *ctx)
1101 {
1102 if (IWL_MVM_DISABLE_AP_FILS)
1103 return false;
1104
1105 if (cfg80211_channel_is_psc(ctx->def.chan))
1106 return true;
1107
1108 return (ctx->def.chan->band == NL80211_BAND_6GHZ &&
1109 ctx->def.width >= NL80211_CHAN_WIDTH_80);
1110 }
1111
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)1112 static int iwl_mvm_mac_ctxt_send_beacon_v9(struct iwl_mvm *mvm,
1113 struct ieee80211_vif *vif,
1114 struct sk_buff *beacon,
1115 struct ieee80211_bss_conf *link_conf)
1116 {
1117 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1118 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(beacon);
1119 struct iwl_mac_beacon_cmd beacon_cmd = {};
1120 u8 rate = iwl_mvm_mac_ctxt_get_beacon_rate(mvm, info, vif);
1121 u16 flags;
1122 struct ieee80211_chanctx_conf *ctx;
1123 int channel;
1124 flags = iwl_mvm_mac_ctxt_get_beacon_flags(mvm->fw, rate);
1125
1126 /* Enable FILS on PSC channels only */
1127 rcu_read_lock();
1128 ctx = rcu_dereference(link_conf->chanctx_conf);
1129 channel = ieee80211_frequency_to_channel(ctx->def.chan->center_freq);
1130 WARN_ON(channel == 0);
1131 if (iwl_mvm_enable_fils(mvm, ctx)) {
1132 flags |= iwl_fw_lookup_cmd_ver(mvm->fw, BEACON_TEMPLATE_CMD,
1133 0) > 10 ?
1134 IWL_MAC_BEACON_FILS :
1135 IWL_MAC_BEACON_FILS_V1;
1136 beacon_cmd.short_ssid =
1137 cpu_to_le32(~crc32_le(~0, vif->cfg.ssid,
1138 vif->cfg.ssid_len));
1139 }
1140 rcu_read_unlock();
1141
1142 beacon_cmd.flags = cpu_to_le16(flags);
1143 beacon_cmd.byte_cnt = cpu_to_le16((u16)beacon->len);
1144
1145 if (WARN_ON(!mvmvif->link[link_conf->link_id]))
1146 return -EINVAL;
1147
1148 if (iwl_fw_lookup_cmd_ver(mvm->fw, BEACON_TEMPLATE_CMD, 0) > 12)
1149 beacon_cmd.link_id =
1150 cpu_to_le32(mvmvif->link[link_conf->link_id]->fw_link_id);
1151 else
1152 beacon_cmd.link_id = cpu_to_le32((u32)mvmvif->id);
1153
1154 if (vif->type == NL80211_IFTYPE_AP)
1155 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
1156 &beacon_cmd.tim_size,
1157 beacon->data, beacon->len);
1158
1159 beacon_cmd.csa_offset =
1160 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
1161 WLAN_EID_CHANNEL_SWITCH,
1162 beacon->len));
1163 beacon_cmd.ecsa_offset =
1164 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
1165 WLAN_EID_EXT_CHANSWITCH_ANN,
1166 beacon->len));
1167
1168 if (vif->type == NL80211_IFTYPE_AP &&
1169 iwl_fw_lookup_cmd_ver(mvm->fw, BEACON_TEMPLATE_CMD, 0) >= 14)
1170 beacon_cmd.btwt_offset =
1171 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
1172 WLAN_EID_S1G_TWT,
1173 beacon->len));
1174
1175 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
1176 sizeof(beacon_cmd));
1177 }
1178
iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct sk_buff * beacon,struct ieee80211_bss_conf * link_conf)1179 static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm,
1180 struct ieee80211_vif *vif,
1181 struct sk_buff *beacon,
1182 struct ieee80211_bss_conf *link_conf)
1183 {
1184 if (WARN_ON(!beacon))
1185 return -EINVAL;
1186
1187 if (IWL_MVM_NON_TRANSMITTING_AP)
1188 return 0;
1189
1190 if (!fw_has_capa(&mvm->fw->ucode_capa,
1191 IWL_UCODE_TLV_CAPA_CSA_AND_TBTT_OFFLOAD))
1192 return iwl_mvm_mac_ctxt_send_beacon_v6(mvm, vif, beacon);
1193
1194 if (fw_has_api(&mvm->fw->ucode_capa,
1195 IWL_UCODE_TLV_API_NEW_BEACON_TEMPLATE))
1196 return iwl_mvm_mac_ctxt_send_beacon_v9(mvm, vif, beacon,
1197 link_conf);
1198
1199 return iwl_mvm_mac_ctxt_send_beacon_v7(mvm, vif, beacon);
1200 }
1201
1202 /* 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)1203 int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm,
1204 struct ieee80211_vif *vif,
1205 struct ieee80211_bss_conf *link_conf)
1206 {
1207 struct sk_buff *beacon;
1208 int ret;
1209
1210 WARN_ON(vif->type != NL80211_IFTYPE_AP &&
1211 vif->type != NL80211_IFTYPE_ADHOC);
1212
1213 beacon = ieee80211_beacon_get_template(mvm->hw, vif, NULL,
1214 link_conf->link_id);
1215 if (!beacon)
1216 return -ENOMEM;
1217
1218 #ifdef CONFIG_IWLWIFI_DEBUGFS
1219 if (mvm->beacon_inject_active) {
1220 dev_kfree_skb(beacon);
1221 return -EBUSY;
1222 }
1223 #endif
1224
1225 ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon, link_conf);
1226 dev_kfree_skb(beacon);
1227 return ret;
1228 }
1229
1230 struct iwl_mvm_mac_ap_iterator_data {
1231 struct iwl_mvm *mvm;
1232 struct ieee80211_vif *vif;
1233 u32 beacon_device_ts;
1234 u16 beacon_int;
1235 };
1236
1237 /* 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)1238 static void iwl_mvm_mac_ap_iterator(void *_data, u8 *mac,
1239 struct ieee80211_vif *vif)
1240 {
1241 struct iwl_mvm_mac_ap_iterator_data *data = _data;
1242
1243 if (vif->type != NL80211_IFTYPE_STATION || !vif->cfg.assoc)
1244 return;
1245
1246 /* Station client has higher priority over P2P client*/
1247 if (vif->p2p && data->beacon_device_ts)
1248 return;
1249
1250 data->beacon_device_ts = vif->bss_conf.sync_device_ts;
1251 data->beacon_int = vif->bss_conf.beacon_int;
1252 }
1253
1254 /*
1255 * Fill the filter flags for mac context of type AP or P2P GO.
1256 */
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)1257 void iwl_mvm_mac_ctxt_cmd_ap_set_filter_flags(struct iwl_mvm *mvm,
1258 struct iwl_mvm_vif *mvmvif,
1259 __le32 *filter_flags,
1260 int accept_probe_req_flag,
1261 int accept_beacon_flag)
1262 {
1263 /*
1264 * in AP mode, pass probe requests and beacons from other APs
1265 * (needed for ht protection); when there're no any associated
1266 * station don't ask FW to pass beacons to prevent unnecessary
1267 * wake-ups.
1268 */
1269 *filter_flags |= cpu_to_le32(accept_probe_req_flag);
1270 if (mvmvif->ap_assoc_sta_count || !mvm->drop_bcn_ap_mode) {
1271 *filter_flags |= cpu_to_le32(accept_beacon_flag);
1272 IWL_DEBUG_HC(mvm, "Asking FW to pass beacons\n");
1273 } else {
1274 IWL_DEBUG_HC(mvm, "No need to receive beacons\n");
1275 }
1276 }
1277
1278 /*
1279 * Fill the specific data for mac context of type AP of P2P GO
1280 */
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)1281 static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm,
1282 struct ieee80211_vif *vif,
1283 struct iwl_mac_ctx_cmd *cmd,
1284 struct iwl_mac_data_ap *ctxt_ap,
1285 bool add)
1286 {
1287 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1288 struct iwl_mvm_mac_ap_iterator_data data = {
1289 .mvm = mvm,
1290 .vif = vif,
1291 .beacon_device_ts = 0
1292 };
1293
1294 /* in AP mode, the MCAST FIFO takes the EDCA params from VO */
1295 cmd->ac[IWL_MVM_TX_FIFO_VO].fifos_mask |= BIT(IWL_MVM_TX_FIFO_MCAST);
1296
1297 iwl_mvm_mac_ctxt_cmd_ap_set_filter_flags(mvm, mvmvif,
1298 &cmd->filter_flags,
1299 MAC_FILTER_IN_PROBE_REQUEST,
1300 MAC_FILTER_IN_BEACON);
1301
1302 ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int);
1303 ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
1304 vif->bss_conf.dtim_period);
1305
1306 if (!fw_has_api(&mvm->fw->ucode_capa,
1307 IWL_UCODE_TLV_API_STA_TYPE))
1308 ctxt_ap->mcast_qid = cpu_to_le32(mvmvif->deflink.cab_queue);
1309
1310 /*
1311 * Only set the beacon time when the MAC is being added, when we
1312 * just modify the MAC then we should keep the time -- the firmware
1313 * can otherwise have a "jumping" TBTT.
1314 */
1315 if (add) {
1316 /*
1317 * If there is a station/P2P client interface which is
1318 * associated, set the AP's TBTT far enough from the station's
1319 * TBTT. Otherwise, set it to the current system time
1320 */
1321 ieee80211_iterate_active_interfaces_atomic(
1322 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
1323 iwl_mvm_mac_ap_iterator, &data);
1324
1325 if (data.beacon_device_ts) {
1326 u32 rand = get_random_u32_inclusive(36, 63);
1327 mvmvif->ap_beacon_time = data.beacon_device_ts +
1328 ieee80211_tu_to_usec(data.beacon_int * rand /
1329 100);
1330 } else {
1331 mvmvif->ap_beacon_time = iwl_mvm_get_systime(mvm);
1332 }
1333 }
1334
1335 ctxt_ap->beacon_time = cpu_to_le32(mvmvif->ap_beacon_time);
1336 ctxt_ap->beacon_tsf = 0; /* unused */
1337
1338 /* TODO: Assume that the beacon id == mac context id */
1339 ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id);
1340 }
1341
iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u32 action)1342 static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm,
1343 struct ieee80211_vif *vif,
1344 u32 action)
1345 {
1346 struct iwl_mac_ctx_cmd cmd = {};
1347
1348 WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p);
1349
1350 /* Fill the common data for all mac context types */
1351 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
1352
1353 /* Fill the data specific for ap mode */
1354 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.ap,
1355 action == FW_CTXT_ACTION_ADD);
1356
1357 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
1358 }
1359
iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u32 action)1360 static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm,
1361 struct ieee80211_vif *vif,
1362 u32 action)
1363 {
1364 struct iwl_mac_ctx_cmd cmd = {};
1365 struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr;
1366
1367 WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p);
1368
1369 /* Fill the common data for all mac context types */
1370 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
1371
1372 /* Fill the data specific for GO mode */
1373 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.go.ap,
1374 action == FW_CTXT_ACTION_ADD);
1375
1376 cmd.go.ctwin = cpu_to_le32(noa->oppps_ctwindow &
1377 IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
1378 cmd.go.opp_ps_enabled =
1379 cpu_to_le32(!!(noa->oppps_ctwindow &
1380 IEEE80211_P2P_OPPPS_ENABLE_BIT));
1381
1382 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
1383 }
1384
iwl_mvm_mac_ctx_send(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u32 action,bool force_assoc_off,const u8 * bssid_override)1385 static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1386 u32 action, bool force_assoc_off,
1387 const u8 *bssid_override)
1388 {
1389 switch (vif->type) {
1390 case NL80211_IFTYPE_STATION:
1391 return iwl_mvm_mac_ctxt_cmd_sta(mvm, vif, action,
1392 force_assoc_off,
1393 bssid_override);
1394 case NL80211_IFTYPE_AP:
1395 if (!vif->p2p)
1396 return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action);
1397 else
1398 return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action);
1399 case NL80211_IFTYPE_MONITOR:
1400 return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action);
1401 case NL80211_IFTYPE_P2P_DEVICE:
1402 return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action);
1403 case NL80211_IFTYPE_ADHOC:
1404 return iwl_mvm_mac_ctxt_cmd_ibss(mvm, vif, action);
1405 default:
1406 break;
1407 }
1408
1409 return -EOPNOTSUPP;
1410 }
1411
iwl_mvm_mac_ctxt_add(struct iwl_mvm * mvm,struct ieee80211_vif * vif)1412 int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1413 {
1414 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1415 int ret;
1416
1417 if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n",
1418 vif->addr, ieee80211_vif_type_p2p(vif)))
1419 return -EIO;
1420
1421 ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD,
1422 true, NULL);
1423 if (ret)
1424 return ret;
1425
1426 /* will only do anything at resume from D3 time */
1427 iwl_mvm_set_last_nonqos_seq(mvm, vif);
1428
1429 mvmvif->uploaded = true;
1430 return 0;
1431 }
1432
iwl_mvm_mac_ctxt_changed(struct iwl_mvm * mvm,struct ieee80211_vif * vif,bool force_assoc_off,const u8 * bssid_override)1433 int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1434 bool force_assoc_off, const u8 *bssid_override)
1435 {
1436 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1437
1438 if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n",
1439 vif->addr, ieee80211_vif_type_p2p(vif)))
1440 return -EIO;
1441
1442 return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY,
1443 force_assoc_off, bssid_override);
1444 }
1445
iwl_mvm_mac_ctxt_remove(struct iwl_mvm * mvm,struct ieee80211_vif * vif)1446 int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1447 {
1448 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1449 struct iwl_mac_ctx_cmd cmd;
1450 int ret;
1451
1452 if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n",
1453 vif->addr, ieee80211_vif_type_p2p(vif)))
1454 return -EIO;
1455
1456 memset(&cmd, 0, sizeof(cmd));
1457
1458 cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
1459 mvmvif->color));
1460 cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE);
1461
1462 ret = iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
1463 if (ret)
1464 return ret;
1465
1466 mvmvif->uploaded = false;
1467
1468 if (vif->type == NL80211_IFTYPE_MONITOR) {
1469 __clear_bit(IEEE80211_HW_RX_INCLUDES_FCS, mvm->hw->flags);
1470 iwl_mvm_dealloc_snif_sta(mvm);
1471 }
1472
1473 return 0;
1474 }
1475
iwl_mvm_csa_count_down(struct iwl_mvm * mvm,struct ieee80211_vif * csa_vif,u32 gp2,bool tx_success)1476 static void iwl_mvm_csa_count_down(struct iwl_mvm *mvm,
1477 struct ieee80211_vif *csa_vif, u32 gp2,
1478 bool tx_success)
1479 {
1480 struct iwl_mvm_vif *mvmvif =
1481 iwl_mvm_vif_from_mac80211(csa_vif);
1482
1483 /* Don't start to countdown from a failed beacon */
1484 if (!tx_success && !mvmvif->csa_countdown)
1485 return;
1486
1487 mvmvif->csa_countdown = true;
1488
1489 if (!ieee80211_beacon_cntdwn_is_complete(csa_vif, 0)) {
1490 int c = ieee80211_beacon_update_cntdwn(csa_vif, 0);
1491
1492 iwl_mvm_mac_ctxt_beacon_changed(mvm, csa_vif,
1493 &csa_vif->bss_conf);
1494 if (csa_vif->p2p &&
1495 !iwl_mvm_te_scheduled(&mvmvif->time_event_data) && gp2 &&
1496 tx_success) {
1497 u32 rel_time = (c + 1) *
1498 csa_vif->bss_conf.beacon_int -
1499 IWL_MVM_CHANNEL_SWITCH_TIME_GO;
1500 u32 apply_time = gp2 + rel_time * 1024;
1501
1502 iwl_mvm_schedule_csa_period(mvm, csa_vif,
1503 IWL_MVM_CHANNEL_SWITCH_TIME_GO -
1504 IWL_MVM_CHANNEL_SWITCH_MARGIN,
1505 apply_time);
1506 }
1507 } else if (!iwl_mvm_te_scheduled(&mvmvif->time_event_data)) {
1508 /* we don't have CSA NoA scheduled yet, switch now */
1509 ieee80211_csa_finish(csa_vif, 0);
1510 RCU_INIT_POINTER(mvm->csa_vif, NULL);
1511 }
1512 }
1513
iwl_mvm_rx_beacon_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1514 void iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm,
1515 struct iwl_rx_cmd_buffer *rxb)
1516 {
1517 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1518 unsigned int pkt_len = iwl_rx_packet_payload_len(pkt);
1519 struct iwl_extended_beacon_notif *beacon = (void *)pkt->data;
1520 struct iwl_extended_beacon_notif_v5 *beacon_v5 = (void *)pkt->data;
1521 struct ieee80211_vif *csa_vif;
1522 struct ieee80211_vif *tx_blocked_vif;
1523 struct agg_tx_status *agg_status;
1524 u16 status;
1525
1526 lockdep_assert_held(&mvm->mutex);
1527
1528 mvm->ap_last_beacon_gp2 = le32_to_cpu(beacon->gp2);
1529
1530 if (!iwl_mvm_is_short_beacon_notif_supported(mvm)) {
1531 struct iwl_mvm_tx_resp *beacon_notify_hdr =
1532 &beacon_v5->beacon_notify_hdr;
1533
1534 if (unlikely(pkt_len < sizeof(*beacon_v5)))
1535 return;
1536
1537 mvm->ibss_manager = beacon_v5->ibss_mgr_status != 0;
1538 agg_status = iwl_mvm_get_agg_status(mvm, beacon_notify_hdr);
1539 status = le16_to_cpu(agg_status->status) & TX_STATUS_MSK;
1540 IWL_DEBUG_RX(mvm,
1541 "beacon status %#x retries:%d tsf:0x%016llX gp2:0x%X rate:%d\n",
1542 status, beacon_notify_hdr->failure_frame,
1543 le64_to_cpu(beacon->tsf),
1544 mvm->ap_last_beacon_gp2,
1545 le32_to_cpu(beacon_notify_hdr->initial_rate));
1546 } else {
1547 if (unlikely(pkt_len < sizeof(*beacon)))
1548 return;
1549
1550 mvm->ibss_manager = beacon->ibss_mgr_status != 0;
1551 status = le32_to_cpu(beacon->status) & TX_STATUS_MSK;
1552 IWL_DEBUG_RX(mvm,
1553 "beacon status %#x tsf:0x%016llX gp2:0x%X\n",
1554 status, le64_to_cpu(beacon->tsf),
1555 mvm->ap_last_beacon_gp2);
1556 }
1557
1558 csa_vif = rcu_dereference_protected(mvm->csa_vif,
1559 lockdep_is_held(&mvm->mutex));
1560 if (unlikely(csa_vif && csa_vif->bss_conf.csa_active))
1561 iwl_mvm_csa_count_down(mvm, csa_vif, mvm->ap_last_beacon_gp2,
1562 (status == TX_STATUS_SUCCESS));
1563
1564 tx_blocked_vif = rcu_dereference_protected(mvm->csa_tx_blocked_vif,
1565 lockdep_is_held(&mvm->mutex));
1566 if (unlikely(tx_blocked_vif)) {
1567 struct iwl_mvm_vif *mvmvif =
1568 iwl_mvm_vif_from_mac80211(tx_blocked_vif);
1569
1570 /*
1571 * The channel switch is started and we have blocked the
1572 * stations. If this is the first beacon (the timeout wasn't
1573 * set), set the unblock timeout, otherwise countdown
1574 */
1575 if (!mvm->csa_tx_block_bcn_timeout)
1576 mvm->csa_tx_block_bcn_timeout =
1577 IWL_MVM_CS_UNBLOCK_TX_TIMEOUT;
1578 else
1579 mvm->csa_tx_block_bcn_timeout--;
1580
1581 /* Check if the timeout is expired, and unblock tx */
1582 if (mvm->csa_tx_block_bcn_timeout == 0) {
1583 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
1584 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
1585 }
1586 }
1587 }
1588
iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1589 void iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm *mvm,
1590 struct iwl_rx_cmd_buffer *rxb)
1591 {
1592 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1593 struct iwl_missed_beacons_notif *mb = (void *)pkt->data;
1594 struct iwl_fw_dbg_trigger_missed_bcon *bcon_trig;
1595 struct iwl_fw_dbg_trigger_tlv *trigger;
1596 u32 stop_trig_missed_bcon, stop_trig_missed_bcon_since_rx;
1597 u32 rx_missed_bcon, rx_missed_bcon_since_rx;
1598 struct ieee80211_vif *vif;
1599 /* Id can be mac/link id depending on the notification version */
1600 u32 id = le32_to_cpu(mb->link_id);
1601 union iwl_dbg_tlv_tp_data tp_data = { .fw_pkt = pkt };
1602 u32 mac_type;
1603 int link_id = -1;
1604 u8 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
1605 MISSED_BEACONS_NOTIFICATION,
1606 0);
1607
1608 /* before version four the ID in the notification refers to mac ID */
1609 if (notif_ver < 4) {
1610 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, false);
1611 } else {
1612 struct ieee80211_bss_conf *bss_conf =
1613 iwl_mvm_rcu_fw_link_id_to_link_conf(mvm, id, false);
1614
1615 if (!bss_conf)
1616 return;
1617
1618 vif = bss_conf->vif;
1619 link_id = bss_conf->link_id;
1620 }
1621
1622 IWL_DEBUG_INFO(mvm,
1623 "missed bcn %s_id=%u, consecutive=%u (%u, %u, %u)\n",
1624 notif_ver < 4 ? "mac" : "link",
1625 id,
1626 le32_to_cpu(mb->consec_missed_beacons),
1627 le32_to_cpu(mb->consec_missed_beacons_since_last_rx),
1628 le32_to_cpu(mb->num_recvd_beacons),
1629 le32_to_cpu(mb->num_expected_beacons));
1630
1631 if (!vif)
1632 return;
1633
1634 mac_type = iwl_mvm_get_mac_type(vif);
1635
1636 IWL_DEBUG_INFO(mvm, "missed beacon mac_type=%u,\n", mac_type);
1637
1638 mvm->trans->dbg.dump_file_name_ext_valid = true;
1639 snprintf(mvm->trans->dbg.dump_file_name_ext, IWL_FW_INI_MAX_NAME,
1640 "MacId_%d_MacType_%d", id, mac_type);
1641
1642 rx_missed_bcon = le32_to_cpu(mb->consec_missed_beacons);
1643 rx_missed_bcon_since_rx =
1644 le32_to_cpu(mb->consec_missed_beacons_since_last_rx);
1645 /*
1646 * TODO: the threshold should be adjusted based on latency conditions,
1647 * and/or in case of a CS flow on one of the other AP vifs.
1648 */
1649 if (rx_missed_bcon >= IWL_MVM_MISSED_BEACONS_THRESHOLD_LONG) {
1650 if (rx_missed_bcon_since_rx >= IWL_MVM_MISSED_BEACONS_SINCE_RX_THOLD) {
1651 iwl_mvm_connection_loss(mvm, vif, "missed beacons");
1652 } else {
1653 IWL_WARN(mvm,
1654 "missed beacons exceeds threshold, but receiving data. Stay connected, Expect bugs.\n");
1655 IWL_WARN(mvm,
1656 "missed_beacons:%d, missed_beacons_since_rx:%d\n",
1657 rx_missed_bcon, rx_missed_bcon_since_rx);
1658 }
1659 } else if (rx_missed_bcon >= IWL_MVM_MISSED_BEACONS_EXIT_ESR_THRESH &&
1660 link_id >= 0 && hweight16(vif->active_links) > 1) {
1661 iwl_mvm_exit_esr(mvm, vif, IWL_MVM_ESR_EXIT_MISSED_BEACON,
1662 iwl_mvm_get_other_link(vif, link_id));
1663 } else if (rx_missed_bcon_since_rx > IWL_MVM_MISSED_BEACONS_THRESHOLD) {
1664 if (!iwl_mvm_has_new_tx_api(mvm))
1665 ieee80211_beacon_loss(vif);
1666 else
1667 ieee80211_cqm_beacon_loss_notify(vif, GFP_ATOMIC);
1668 }
1669
1670 iwl_dbg_tlv_time_point(&mvm->fwrt,
1671 IWL_FW_INI_TIME_POINT_MISSED_BEACONS, &tp_data);
1672
1673 trigger = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
1674 FW_DBG_TRIGGER_MISSED_BEACONS);
1675 if (!trigger)
1676 return;
1677
1678 bcon_trig = (void *)trigger->data;
1679 stop_trig_missed_bcon = le32_to_cpu(bcon_trig->stop_consec_missed_bcon);
1680 stop_trig_missed_bcon_since_rx =
1681 le32_to_cpu(bcon_trig->stop_consec_missed_bcon_since_rx);
1682
1683 /* TODO: implement start trigger */
1684
1685 if (rx_missed_bcon_since_rx >= stop_trig_missed_bcon_since_rx ||
1686 rx_missed_bcon >= stop_trig_missed_bcon)
1687 #if defined(__linux__)
1688 iwl_fw_dbg_collect_trig(&mvm->fwrt, trigger, NULL);
1689 #elif defined(__FreeBSD__)
1690 iwl_fw_dbg_collect_trig(&mvm->fwrt, trigger, "");
1691 #endif
1692 }
1693
iwl_mvm_rx_stored_beacon_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1694 void iwl_mvm_rx_stored_beacon_notif(struct iwl_mvm *mvm,
1695 struct iwl_rx_cmd_buffer *rxb)
1696 {
1697 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1698 unsigned int pkt_len = iwl_rx_packet_payload_len(pkt);
1699 struct iwl_stored_beacon_notif_common *sb = (void *)pkt->data;
1700 struct ieee80211_rx_status rx_status;
1701 struct sk_buff *skb;
1702 u8 *data;
1703 u32 size = le32_to_cpu(sb->byte_count);
1704 int ver = iwl_fw_lookup_cmd_ver(mvm->fw,
1705 WIDE_ID(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF),
1706 0);
1707
1708 if (size == 0)
1709 return;
1710
1711 /* handle per-version differences */
1712 if (ver <= 2) {
1713 struct iwl_stored_beacon_notif_v2 *sb_v2 = (void *)pkt->data;
1714
1715 if (pkt_len < struct_size(sb_v2, data, size))
1716 return;
1717
1718 data = sb_v2->data;
1719 } else {
1720 struct iwl_stored_beacon_notif_v3 *sb_v3 = (void *)pkt->data;
1721
1722 if (pkt_len < struct_size(sb_v3, data, size))
1723 return;
1724
1725 data = sb_v3->data;
1726 }
1727
1728 skb = alloc_skb(size, GFP_ATOMIC);
1729 if (!skb) {
1730 IWL_ERR(mvm, "alloc_skb failed\n");
1731 return;
1732 }
1733
1734 /* update rx_status according to the notification's metadata */
1735 memset(&rx_status, 0, sizeof(rx_status));
1736 rx_status.mactime = le64_to_cpu(sb->tsf);
1737 /* TSF as indicated by the firmware is at INA time */
1738 rx_status.flag |= RX_FLAG_MACTIME_PLCP_START;
1739 rx_status.device_timestamp = le32_to_cpu(sb->system_time);
1740 rx_status.band =
1741 (sb->band & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ?
1742 NL80211_BAND_2GHZ : NL80211_BAND_5GHZ;
1743 rx_status.freq =
1744 ieee80211_channel_to_frequency(le16_to_cpu(sb->channel),
1745 rx_status.band);
1746
1747 /* copy the data */
1748 skb_put_data(skb, data, size);
1749 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
1750
1751 /* pass it as regular rx to mac80211 */
1752 ieee80211_rx_napi(mvm->hw, NULL, skb, NULL);
1753 }
1754
iwl_mvm_probe_resp_data_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1755 void iwl_mvm_probe_resp_data_notif(struct iwl_mvm *mvm,
1756 struct iwl_rx_cmd_buffer *rxb)
1757 {
1758 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1759 struct iwl_probe_resp_data_notif *notif = (void *)pkt->data;
1760 struct iwl_probe_resp_data *old_data, *new_data;
1761 u32 id = le32_to_cpu(notif->mac_id);
1762 struct ieee80211_vif *vif;
1763 struct iwl_mvm_vif *mvmvif;
1764
1765 IWL_DEBUG_INFO(mvm, "Probe response data notif: noa %d, csa %d\n",
1766 notif->noa_active, notif->csa_counter);
1767
1768 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, false);
1769 if (!vif)
1770 return;
1771
1772 mvmvif = iwl_mvm_vif_from_mac80211(vif);
1773
1774 new_data = kzalloc(sizeof(*new_data), GFP_KERNEL);
1775 if (!new_data)
1776 return;
1777
1778 memcpy(&new_data->notif, notif, sizeof(new_data->notif));
1779
1780 /* noa_attr contains 1 reserved byte, need to substruct it */
1781 new_data->noa_len = sizeof(struct ieee80211_vendor_ie) +
1782 sizeof(new_data->notif.noa_attr) - 1;
1783
1784 /*
1785 * If it's a one time NoA, only one descriptor is needed,
1786 * adjust the length according to len_low.
1787 */
1788 if (new_data->notif.noa_attr.len_low ==
1789 sizeof(struct ieee80211_p2p_noa_desc) + 2)
1790 new_data->noa_len -= sizeof(struct ieee80211_p2p_noa_desc);
1791
1792 old_data = rcu_dereference_protected(mvmvif->deflink.probe_resp_data,
1793 lockdep_is_held(&mvmvif->mvm->mutex));
1794 rcu_assign_pointer(mvmvif->deflink.probe_resp_data, new_data);
1795
1796 if (old_data)
1797 kfree_rcu(old_data, rcu_head);
1798
1799 if (notif->csa_counter != IWL_PROBE_RESP_DATA_NO_CSA &&
1800 notif->csa_counter >= 1)
1801 ieee80211_beacon_set_cntdwn(vif, notif->csa_counter);
1802 }
1803
iwl_mvm_channel_switch_start_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1804 void iwl_mvm_channel_switch_start_notif(struct iwl_mvm *mvm,
1805 struct iwl_rx_cmd_buffer *rxb)
1806 {
1807 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1808 struct ieee80211_vif *csa_vif, *vif;
1809 struct iwl_mvm_vif *mvmvif, *csa_mvmvif;
1810 u32 id_n_color, csa_id;
1811 /* save mac_id or link_id to use later to cancel csa if needed */
1812 u32 id;
1813 u32 mac_link_id = 0;
1814 u8 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, MAC_CONF_GROUP,
1815 CHANNEL_SWITCH_START_NOTIF, 0);
1816 bool csa_active;
1817
1818 rcu_read_lock();
1819
1820 if (notif_ver < 3) {
1821 struct iwl_channel_switch_start_notif_v1 *notif = (void *)pkt->data;
1822 u32 mac_id;
1823
1824 id_n_color = le32_to_cpu(notif->id_and_color);
1825 mac_id = id_n_color & FW_CTXT_ID_MSK;
1826
1827 vif = iwl_mvm_rcu_dereference_vif_id(mvm, mac_id, true);
1828 if (!vif)
1829 goto out_unlock;
1830
1831 id = mac_id;
1832 csa_active = vif->bss_conf.csa_active;
1833 } else {
1834 struct iwl_channel_switch_start_notif *notif = (void *)pkt->data;
1835 u32 link_id = le32_to_cpu(notif->link_id);
1836 struct ieee80211_bss_conf *bss_conf =
1837 iwl_mvm_rcu_fw_link_id_to_link_conf(mvm, link_id, true);
1838
1839 if (!bss_conf)
1840 goto out_unlock;
1841
1842 id = link_id;
1843 mac_link_id = bss_conf->link_id;
1844 vif = bss_conf->vif;
1845 csa_active = bss_conf->csa_active;
1846 }
1847
1848 mvmvif = iwl_mvm_vif_from_mac80211(vif);
1849 if (notif_ver >= 3)
1850 id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color);
1851
1852 switch (vif->type) {
1853 case NL80211_IFTYPE_AP:
1854 csa_vif = rcu_dereference(mvm->csa_vif);
1855 if (WARN_ON(!csa_vif || !csa_vif->bss_conf.csa_active ||
1856 csa_vif != vif))
1857 goto out_unlock;
1858
1859 csa_mvmvif = iwl_mvm_vif_from_mac80211(csa_vif);
1860 csa_id = FW_CMD_ID_AND_COLOR(csa_mvmvif->id, csa_mvmvif->color);
1861 if (WARN(csa_id != id_n_color,
1862 "channel switch noa notification on unexpected vif (csa_vif=%d, notif=%d)",
1863 csa_id, id_n_color))
1864 goto out_unlock;
1865
1866 IWL_DEBUG_INFO(mvm, "Channel Switch Started Notification\n");
1867
1868 schedule_delayed_work(&mvm->cs_tx_unblock_dwork,
1869 msecs_to_jiffies(IWL_MVM_CS_UNBLOCK_TX_TIMEOUT *
1870 csa_vif->bss_conf.beacon_int));
1871
1872 ieee80211_csa_finish(csa_vif, 0);
1873
1874 rcu_read_unlock();
1875
1876 RCU_INIT_POINTER(mvm->csa_vif, NULL);
1877 return;
1878 case NL80211_IFTYPE_STATION:
1879 /*
1880 * if we don't know about an ongoing channel switch,
1881 * make sure FW cancels it
1882 */
1883 if (iwl_fw_lookup_notif_ver(mvm->fw, MAC_CONF_GROUP,
1884 CHANNEL_SWITCH_ERROR_NOTIF,
1885 0) && !csa_active) {
1886 IWL_DEBUG_INFO(mvm, "Channel Switch was canceled\n");
1887 iwl_mvm_cancel_channel_switch(mvm, vif, id);
1888 break;
1889 }
1890
1891 iwl_mvm_csa_client_absent(mvm, vif);
1892 cancel_delayed_work(&mvmvif->csa_work);
1893 ieee80211_chswitch_done(vif, true, mac_link_id);
1894 break;
1895 default:
1896 /* should never happen */
1897 WARN_ON_ONCE(1);
1898 break;
1899 }
1900 out_unlock:
1901 rcu_read_unlock();
1902 }
1903
iwl_mvm_channel_switch_error_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1904 void iwl_mvm_channel_switch_error_notif(struct iwl_mvm *mvm,
1905 struct iwl_rx_cmd_buffer *rxb)
1906 {
1907 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1908 struct iwl_channel_switch_error_notif *notif = (void *)pkt->data;
1909 struct ieee80211_vif *vif;
1910 u32 id = le32_to_cpu(notif->link_id);
1911 u32 csa_err_mask = le32_to_cpu(notif->csa_err_mask);
1912
1913 rcu_read_lock();
1914 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true);
1915 if (!vif) {
1916 rcu_read_unlock();
1917 return;
1918 }
1919
1920 IWL_DEBUG_INFO(mvm, "FW reports CSA error: id=%u, csa_err_mask=%u\n",
1921 id, csa_err_mask);
1922 if (csa_err_mask & (CS_ERR_COUNT_ERROR |
1923 CS_ERR_LONG_DELAY_AFTER_CS |
1924 CS_ERR_TX_BLOCK_TIMER_EXPIRED))
1925 ieee80211_channel_switch_disconnect(vif);
1926 rcu_read_unlock();
1927 }
1928
iwl_mvm_rx_missed_vap_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1929 void iwl_mvm_rx_missed_vap_notif(struct iwl_mvm *mvm,
1930 struct iwl_rx_cmd_buffer *rxb)
1931 {
1932 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1933 struct iwl_missed_vap_notif *mb = (void *)pkt->data;
1934 struct ieee80211_vif *vif;
1935 u32 id = le32_to_cpu(mb->mac_id);
1936
1937 IWL_DEBUG_INFO(mvm,
1938 "missed_vap notify mac_id=%u, num_beacon_intervals_elapsed=%u, profile_periodicity=%u\n",
1939 le32_to_cpu(mb->mac_id),
1940 mb->num_beacon_intervals_elapsed,
1941 mb->profile_periodicity);
1942
1943 rcu_read_lock();
1944
1945 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true);
1946 if (vif)
1947 iwl_mvm_connection_loss(mvm, vif, "missed vap beacon");
1948
1949 rcu_read_unlock();
1950 }
1951