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Merge tag 'trace-printf-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/trace...
[drm/drm-misc.git] / drivers / net / wireless / intel / iwlwifi / mvm / mac-ctxt.c
blob2a13d70da46cf1d4b9264ef0f63b2197fef83c41
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
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
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
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
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;
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 iwl_mvm_init_link(&mvmvif->deflink);
302
303 /* No need to allocate data queues to P2P Device MAC and NAN.*/
304 if (vif->type == NL80211_IFTYPE_P2P_DEVICE)
305 return 0;
306
307 /* Allocate the CAB queue for softAP and GO interfaces */
308 if (vif->type == NL80211_IFTYPE_AP ||
309 vif->type == NL80211_IFTYPE_ADHOC) {
310 /*
311 * For TVQM this will be overwritten later with the FW assigned
312 * queue value (when queue is enabled).
313 */
314 mvmvif->deflink.cab_queue = IWL_MVM_DQA_GCAST_QUEUE;
315 }
316
317 return 0;
318
319 exit_fail:
320 memset(mvmvif, 0, sizeof(struct iwl_mvm_vif));
321 return ret;
322 }
323
324 static void iwl_mvm_ack_rates(struct iwl_mvm *mvm,
325 struct ieee80211_vif *vif,
326 enum nl80211_band band,
327 u8 *cck_rates, u8 *ofdm_rates)
328 {
329 struct ieee80211_supported_band *sband;
330 unsigned long basic = vif->bss_conf.basic_rates;
331 int lowest_present_ofdm = 100;
332 int lowest_present_cck = 100;
333 u8 cck = 0;
334 u8 ofdm = 0;
335 int i;
336
337 sband = mvm->hw->wiphy->bands[band];
338
339 for_each_set_bit(i, &basic, BITS_PER_LONG) {
340 int hw = sband->bitrates[i].hw_value;
341 if (hw >= IWL_FIRST_OFDM_RATE) {
342 ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE);
343 if (lowest_present_ofdm > hw)
344 lowest_present_ofdm = hw;
345 } else {
346 BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0);
347
348 cck |= BIT(hw);
349 if (lowest_present_cck > hw)
350 lowest_present_cck = hw;
351 }
352 }
353
354 /*
355 * Now we've got the basic rates as bitmaps in the ofdm and cck
356 * variables. This isn't sufficient though, as there might not
357 * be all the right rates in the bitmap. E.g. if the only basic
358 * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps
359 * and 6 Mbps because the 802.11-2007 standard says in 9.6:
360 *
361 * [...] a STA responding to a received frame shall transmit
362 * its Control Response frame [...] at the highest rate in the
363 * BSSBasicRateSet parameter that is less than or equal to the
364 * rate of the immediately previous frame in the frame exchange
365 * sequence ([...]) and that is of the same modulation class
366 * ([...]) as the received frame. If no rate contained in the
367 * BSSBasicRateSet parameter meets these conditions, then the
368 * control frame sent in response to a received frame shall be
369 * transmitted at the highest mandatory rate of the PHY that is
370 * less than or equal to the rate of the received frame, and
371 * that is of the same modulation class as the received frame.
372 *
373 * As a consequence, we need to add all mandatory rates that are
374 * lower than all of the basic rates to these bitmaps.
375 */
376
377 if (IWL_RATE_24M_INDEX < lowest_present_ofdm)
378 ofdm |= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE;
379 if (IWL_RATE_12M_INDEX < lowest_present_ofdm)
380 ofdm |= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE;
381 /* 6M already there or needed so always add */
382 ofdm |= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE;
383
384 /*
385 * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP.
386 * Note, however:
387 * - if no CCK rates are basic, it must be ERP since there must
388 * be some basic rates at all, so they're OFDM => ERP PHY
389 * (or we're in 5 GHz, and the cck bitmap will never be used)
390 * - if 11M is a basic rate, it must be ERP as well, so add 5.5M
391 * - if 5.5M is basic, 1M and 2M are mandatory
392 * - if 2M is basic, 1M is mandatory
393 * - if 1M is basic, that's the only valid ACK rate.
394 * As a consequence, it's not as complicated as it sounds, just add
395 * any lower rates to the ACK rate bitmap.
396 */
397 if (IWL_RATE_11M_INDEX < lowest_present_cck)
398 cck |= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE;
399 if (IWL_RATE_5M_INDEX < lowest_present_cck)
400 cck |= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE;
401 if (IWL_RATE_2M_INDEX < lowest_present_cck)
402 cck |= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE;
403 /* 1M already there or needed so always add */
404 cck |= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE;
405
406 *cck_rates = cck;
407 *ofdm_rates = ofdm;
408 }
409
410 void iwl_mvm_set_fw_basic_rates(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
411 struct iwl_mvm_vif_link_info *link_info,
412 __le32 *cck_rates, __le32 *ofdm_rates)
413 {
414 struct iwl_mvm_phy_ctxt *phy_ctxt;
415 u8 cck_ack_rates = 0, ofdm_ack_rates = 0;
416 enum nl80211_band band = NL80211_BAND_2GHZ;
417
418 phy_ctxt = link_info->phy_ctxt;
419 if (phy_ctxt && phy_ctxt->channel)
420 band = phy_ctxt->channel->band;
421
422 iwl_mvm_ack_rates(mvm, vif, band, &cck_ack_rates, &ofdm_ack_rates);
423
424 *cck_rates = cpu_to_le32((u32)cck_ack_rates);
425 *ofdm_rates = cpu_to_le32((u32)ofdm_ack_rates);
426 }
427
428 void iwl_mvm_set_fw_protection_flags(struct iwl_mvm *mvm,
429 struct ieee80211_vif *vif,
430 struct ieee80211_bss_conf *link_conf,
431 __le32 *protection_flags, u32 ht_flag,
432 u32 tgg_flag)
433 {
434 /* for both sta and ap, ht_operation_mode hold the protection_mode */
435 u8 protection_mode = link_conf->ht_operation_mode &
436 IEEE80211_HT_OP_MODE_PROTECTION;
437 bool ht_enabled = !!(link_conf->ht_operation_mode &
438 IEEE80211_HT_OP_MODE_PROTECTION);
439
440 if (link_conf->use_cts_prot)
441 *protection_flags |= cpu_to_le32(tgg_flag);
442
443 IWL_DEBUG_RATE(mvm, "use_cts_prot %d, ht_operation_mode %d\n",
444 link_conf->use_cts_prot,
445 link_conf->ht_operation_mode);
446
447 if (!ht_enabled)
448 return;
449
450 IWL_DEBUG_RATE(mvm, "protection mode set to %d\n", protection_mode);
451 /*
452 * See section 9.23.3.1 of IEEE 80211-2012.
453 * Nongreenfield HT STAs Present is not supported.
454 */
455 switch (protection_mode) {
456 case IEEE80211_HT_OP_MODE_PROTECTION_NONE:
457 break;
458 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER:
459 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
460 *protection_flags |= cpu_to_le32(ht_flag);
461 break;
462 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
463 /* Protect when channel wider than 20MHz */
464 if (link_conf->chanreq.oper.width > NL80211_CHAN_WIDTH_20)
465 *protection_flags |= cpu_to_le32(ht_flag);
466 break;
467 default:
468 IWL_ERR(mvm, "Illegal protection mode %d\n",
469 protection_mode);
470 break;
471 }
472 }
473
474 void iwl_mvm_set_fw_qos_params(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
475 struct ieee80211_bss_conf *link_conf,
476 struct iwl_ac_qos *ac, __le32 *qos_flags)
477 {
478 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
479 struct iwl_mvm_vif_link_info *mvm_link =
480 mvmvif->link[link_conf->link_id];
481 int i;
482
483 if (!mvm_link)
484 return;
485
486 for (i = 0; i < IEEE80211_NUM_ACS; i++) {
487 u8 txf = iwl_mvm_mac_ac_to_tx_fifo(mvm, i);
488 u8 ucode_ac = iwl_mvm_mac80211_ac_to_ucode_ac(i);
489
490 ac[ucode_ac].cw_min =
491 cpu_to_le16(mvm_link->queue_params[i].cw_min);
492 ac[ucode_ac].cw_max =
493 cpu_to_le16(mvm_link->queue_params[i].cw_max);
494 ac[ucode_ac].edca_txop =
495 cpu_to_le16(mvm_link->queue_params[i].txop * 32);
496 ac[ucode_ac].aifsn = mvm_link->queue_params[i].aifs;
497 ac[ucode_ac].fifos_mask = BIT(txf);
498 }
499
500 if (link_conf->qos)
501 *qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA);
502
503 if (link_conf->chanreq.oper.width != NL80211_CHAN_WIDTH_20_NOHT)
504 *qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN);
505 }
506
507 int iwl_mvm_get_mac_type(struct ieee80211_vif *vif)
508 {
509 u32 mac_type = FW_MAC_TYPE_BSS_STA;
510
511 switch (vif->type) {
512 case NL80211_IFTYPE_STATION:
513 if (vif->p2p)
514 mac_type = FW_MAC_TYPE_P2P_STA;
515 else
516 mac_type = FW_MAC_TYPE_BSS_STA;
517 break;
518 case NL80211_IFTYPE_AP:
519 mac_type = FW_MAC_TYPE_GO;
520 break;
521 case NL80211_IFTYPE_MONITOR:
522 mac_type = FW_MAC_TYPE_LISTENER;
523 break;
524 case NL80211_IFTYPE_P2P_DEVICE:
525 mac_type = FW_MAC_TYPE_P2P_DEVICE;
526 break;
527 case NL80211_IFTYPE_ADHOC:
528 mac_type = FW_MAC_TYPE_IBSS;
529 break;
530 default:
531 WARN_ON_ONCE(1);
532 }
533 return mac_type;
534 }
535
536 static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm,
537 struct ieee80211_vif *vif,
538 struct iwl_mac_ctx_cmd *cmd,
539 const u8 *bssid_override,
540 u32 action)
541 {
542 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
543 const u8 *bssid = bssid_override ?: vif->bss_conf.bssid;
544 u32 ht_flag;
545
546 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
547 mvmvif->color));
548 cmd->action = cpu_to_le32(action);
549 cmd->mac_type = cpu_to_le32(iwl_mvm_get_mac_type(vif));
550
551 cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id);
552
553 memcpy(cmd->node_addr, vif->addr, ETH_ALEN);
554
555 if (bssid)
556 memcpy(cmd->bssid_addr, bssid, ETH_ALEN);
557 else
558 eth_broadcast_addr(cmd->bssid_addr);
559
560 iwl_mvm_set_fw_basic_rates(mvm, vif, &mvmvif->deflink, &cmd->cck_rates,
561 &cmd->ofdm_rates);
562
563 cmd->cck_short_preamble =
564 cpu_to_le32(vif->bss_conf.use_short_preamble ?
565 MAC_FLG_SHORT_PREAMBLE : 0);
566 cmd->short_slot =
567 cpu_to_le32(vif->bss_conf.use_short_slot ?
568 MAC_FLG_SHORT_SLOT : 0);
569
570 cmd->filter_flags = 0;
571
572 iwl_mvm_set_fw_qos_params(mvm, vif, &vif->bss_conf, cmd->ac,
573 &cmd->qos_flags);
574
575 /* The fw does not distinguish between ht and fat */
576 ht_flag = MAC_PROT_FLG_HT_PROT | MAC_PROT_FLG_FAT_PROT;
577 iwl_mvm_set_fw_protection_flags(mvm, vif, &vif->bss_conf,
578 &cmd->protection_flags,
579 ht_flag, MAC_PROT_FLG_TGG_PROTECT);
580 }
581
582 static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm *mvm,
583 struct iwl_mac_ctx_cmd *cmd)
584 {
585 int ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0,
586 sizeof(*cmd), cmd);
587 if (ret)
588 IWL_ERR(mvm, "Failed to send MAC_CONTEXT_CMD (action:%d): %d\n",
589 le32_to_cpu(cmd->action), ret);
590 return ret;
591 }
592
593 void iwl_mvm_set_fw_dtim_tbtt(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
594 struct ieee80211_bss_conf *link_conf,
595 __le64 *dtim_tsf, __le32 *dtim_time,
596 __le32 *assoc_beacon_arrive_time)
597 {
598 u32 dtim_offs;
599
600 /*
601 * The DTIM count counts down, so when it is N that means N
602 * more beacon intervals happen until the DTIM TBTT. Therefore
603 * add this to the current time. If that ends up being in the
604 * future, the firmware will handle it.
605 *
606 * Also note that the system_timestamp (which we get here as
607 * "sync_device_ts") and TSF timestamp aren't at exactly the
608 * same offset in the frame -- the TSF is at the first symbol
609 * of the TSF, the system timestamp is at signal acquisition
610 * time. This means there's an offset between them of at most
611 * a few hundred microseconds (24 * 8 bits + PLCP time gives
612 * 384us in the longest case), this is currently not relevant
613 * as the firmware wakes up around 2ms before the TBTT.
614 */
615 dtim_offs = link_conf->sync_dtim_count *
616 link_conf->beacon_int;
617 /* convert TU to usecs */
618 dtim_offs *= 1024;
619
620 *dtim_tsf =
621 cpu_to_le64(link_conf->sync_tsf + dtim_offs);
622 *dtim_time =
623 cpu_to_le32(link_conf->sync_device_ts + dtim_offs);
624 *assoc_beacon_arrive_time =
625 cpu_to_le32(link_conf->sync_device_ts);
626
627 IWL_DEBUG_INFO(mvm, "DTIM TBTT is 0x%llx/0x%x, offset %d\n",
628 le64_to_cpu(*dtim_tsf),
629 le32_to_cpu(*dtim_time),
630 dtim_offs);
631 }
632
633 __le32 iwl_mvm_mac_ctxt_cmd_p2p_sta_get_oppps_ctwin(struct iwl_mvm *mvm,
634 struct ieee80211_vif *vif)
635 {
636 struct ieee80211_p2p_noa_attr *noa =
637 &vif->bss_conf.p2p_noa_attr;
638
639 return cpu_to_le32(noa->oppps_ctwindow &
640 IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
641 }
642
643 u32 iwl_mvm_mac_ctxt_cmd_sta_get_twt_policy(struct iwl_mvm *mvm,
644 struct ieee80211_vif *vif)
645 {
646 u32 twt_policy = 0;
647
648 if (vif->bss_conf.twt_requester && IWL_MVM_USE_TWT)
649 twt_policy |= TWT_SUPPORTED;
650 if (vif->bss_conf.twt_protected)
651 twt_policy |= PROTECTED_TWT_SUPPORTED;
652 if (vif->bss_conf.twt_broadcast)
653 twt_policy |= BROADCAST_TWT_SUPPORTED;
654
655 return twt_policy;
656 }
657
658 static int iwl_mvm_mac_ctxt_cmd_sta(struct iwl_mvm *mvm,
659 struct ieee80211_vif *vif,
660 u32 action, bool force_assoc_off,
661 const u8 *bssid_override)
662 {
663 struct iwl_mac_ctx_cmd cmd = {};
664 struct iwl_mac_data_sta *ctxt_sta;
665
666 WARN_ON(vif->type != NL80211_IFTYPE_STATION);
667
668 /* Fill the common data for all mac context types */
669 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, bssid_override, action);
670
671 /*
672 * We always want to hear MCAST frames, if we're not authorized yet,
673 * we'll drop them.
674 */
675 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_ACCEPT_GRP);
676
677 if (vif->p2p) {
678 cmd.p2p_sta.ctwin =
679 iwl_mvm_mac_ctxt_cmd_p2p_sta_get_oppps_ctwin(mvm, vif);
680
681 ctxt_sta = &cmd.p2p_sta.sta;
682 } else {
683 ctxt_sta = &cmd.sta;
684 }
685
686 /* We need the dtim_period to set the MAC as associated */
687 if (vif->cfg.assoc && vif->bss_conf.dtim_period &&
688 !force_assoc_off) {
689 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
690
691 iwl_mvm_set_fw_dtim_tbtt(mvm, vif, &vif->bss_conf,
692 &ctxt_sta->dtim_tsf,
693 &ctxt_sta->dtim_time,
694 &ctxt_sta->assoc_beacon_arrive_time);
695
696 ctxt_sta->is_assoc = cpu_to_le32(1);
697
698 if (!mvmvif->authorized &&
699 fw_has_capa(&mvm->fw->ucode_capa,
700 IWL_UCODE_TLV_CAPA_COEX_HIGH_PRIO))
701 ctxt_sta->data_policy |=
702 cpu_to_le32(COEX_HIGH_PRIORITY_ENABLE);
703 } else {
704 ctxt_sta->is_assoc = cpu_to_le32(0);
705
706 /* Allow beacons to pass through as long as we are not
707 * associated, or we do not have dtim period information.
708 */
709 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON);
710 }
711
712 ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int);
713 ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
714 vif->bss_conf.dtim_period);
715
716 ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval);
717 ctxt_sta->assoc_id = cpu_to_le32(vif->cfg.aid);
718
719 if (vif->probe_req_reg && vif->cfg.assoc && vif->p2p)
720 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
721
722 if (vif->bss_conf.he_support && !iwlwifi_mod_params.disable_11ax) {
723 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_11AX);
724 ctxt_sta->data_policy |=
725 cpu_to_le32(iwl_mvm_mac_ctxt_cmd_sta_get_twt_policy(mvm, vif));
726 }
727
728
729 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
730 }
731
732 static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm,
733 struct ieee80211_vif *vif,
734 u32 action)
735 {
736 struct iwl_mac_ctx_cmd cmd = {};
737 u32 tfd_queue_msk = 0;
738 int ret;
739
740 WARN_ON(vif->type != NL80211_IFTYPE_MONITOR);
741
742 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
743
744 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROMISC |
745 MAC_FILTER_IN_CONTROL_AND_MGMT |
746 MAC_FILTER_IN_BEACON |
747 MAC_FILTER_IN_PROBE_REQUEST |
748 MAC_FILTER_IN_CRC32 |
749 MAC_FILTER_ACCEPT_GRP);
750 ieee80211_hw_set(mvm->hw, RX_INCLUDES_FCS);
751
752 /*
753 * the queue mask is only relevant for old TX API, and
754 * mvm->snif_queue isn't set here (it's still set to
755 * IWL_MVM_INVALID_QUEUE so the BIT() of it is UB)
756 */
757 if (!iwl_mvm_has_new_tx_api(mvm))
758 tfd_queue_msk = BIT(mvm->snif_queue);
759
760 /* Allocate sniffer station */
761 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->snif_sta, tfd_queue_msk,
762 vif->type, IWL_STA_GENERAL_PURPOSE);
763 if (ret)
764 return ret;
765
766 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
767 }
768
769 static int iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm *mvm,
770 struct ieee80211_vif *vif,
771 u32 action)
772 {
773 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
774 struct iwl_mac_ctx_cmd cmd = {};
775
776 WARN_ON(vif->type != NL80211_IFTYPE_ADHOC);
777
778 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
779
780 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_BEACON |
781 MAC_FILTER_IN_PROBE_REQUEST |
782 MAC_FILTER_ACCEPT_GRP);
783
784 /* cmd.ibss.beacon_time/cmd.ibss.beacon_tsf are curently ignored */
785 cmd.ibss.bi = cpu_to_le32(vif->bss_conf.beacon_int);
786
787 /* TODO: Assumes that the beacon id == mac context id */
788 cmd.ibss.beacon_template = cpu_to_le32(mvmvif->id);
789
790 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
791 }
792
793 struct iwl_mvm_go_iterator_data {
794 bool go_active;
795 };
796
797 static void iwl_mvm_go_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif)
798 {
799 struct iwl_mvm_go_iterator_data *data = _data;
800 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
801
802 if (vif->type == NL80211_IFTYPE_AP && vif->p2p &&
803 mvmvif->ap_ibss_active)
804 data->go_active = true;
805 }
806
807 __le32 iwl_mac_ctxt_p2p_dev_has_extended_disc(struct iwl_mvm *mvm,
808 struct ieee80211_vif *vif)
809 {
810 struct iwl_mvm_go_iterator_data data = {};
811
812 /*
813 * This flag should be set to true when the P2P Device is
814 * discoverable and there is at least another active P2P GO. Settings
815 * this flag will allow the P2P Device to be discoverable on other
816 * channels in addition to its listen channel.
817 * Note that this flag should not be set in other cases as it opens the
818 * Rx filters on all MAC and increases the number of interrupts.
819 */
820 ieee80211_iterate_active_interfaces_atomic(
821 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
822 iwl_mvm_go_iterator, &data);
823
824 return cpu_to_le32(data.go_active ? 1 : 0);
825 }
826
827 static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm,
828 struct ieee80211_vif *vif,
829 u32 action)
830 {
831 struct iwl_mac_ctx_cmd cmd = {};
832
833 WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE);
834
835 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
836
837 cmd.p2p_dev.is_disc_extended =
838 iwl_mac_ctxt_p2p_dev_has_extended_disc(mvm, vif);
839
840 /* Override the filter flags to accept only probe requests */
841 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
842
843 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
844 }
845
846 void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm,
847 __le32 *tim_index, __le32 *tim_size,
848 u8 *beacon, u32 frame_size)
849 {
850 u32 tim_idx;
851 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
852
853 /* The index is relative to frame start but we start looking at the
854 * variable-length part of the beacon. */
855 tim_idx = mgmt->u.beacon.variable - beacon;
856
857 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
858 while ((tim_idx < (frame_size - 2)) &&
859 (beacon[tim_idx] != WLAN_EID_TIM))
860 tim_idx += beacon[tim_idx+1] + 2;
861
862 /* If TIM field was found, set variables */
863 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
864 *tim_index = cpu_to_le32(tim_idx);
865 *tim_size = cpu_to_le32((u32)beacon[tim_idx + 1]);
866 } else {
867 IWL_WARN(mvm, "Unable to find TIM Element in beacon\n");
868 }
869 }
870
871 u32 iwl_mvm_find_ie_offset(u8 *beacon, u8 eid, u32 frame_size)
872 {
873 struct ieee80211_mgmt *mgmt = (void *)beacon;
874 const u8 *ie;
875
876 if (WARN_ON_ONCE(frame_size <= (mgmt->u.beacon.variable - beacon)))
877 return 0;
878
879 frame_size -= mgmt->u.beacon.variable - beacon;
880
881 ie = cfg80211_find_ie(eid, mgmt->u.beacon.variable, frame_size);
882 if (!ie)
883 return 0;
884
885 return ie - beacon;
886 }
887
888 u8 iwl_mvm_mac_ctxt_get_lowest_rate(struct iwl_mvm *mvm,
889 struct ieee80211_tx_info *info,
890 struct ieee80211_vif *vif)
891 {
892 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
893 struct ieee80211_supported_band *sband;
894 unsigned long basic = vif->bss_conf.basic_rates;
895 u16 lowest_cck = IWL_RATE_COUNT, lowest_ofdm = IWL_RATE_COUNT;
896 u32 link_id = u32_get_bits(info->control.flags,
897 IEEE80211_TX_CTRL_MLO_LINK);
898 u8 band = info->band;
899 u8 rate;
900 u32 i;
901
902 if (link_id == IEEE80211_LINK_UNSPECIFIED && ieee80211_vif_is_mld(vif)) {
903 for (i = 0; i < ARRAY_SIZE(mvmvif->link); i++) {
904 if (!mvmvif->link[i])
905 continue;
906 /* shouldn't do this when >1 link is active */
907 WARN_ON_ONCE(link_id != IEEE80211_LINK_UNSPECIFIED);
908 link_id = i;
909 }
910 }
911
912 if (link_id < IEEE80211_LINK_UNSPECIFIED) {
913 struct ieee80211_bss_conf *link_conf;
914
915 rcu_read_lock();
916 link_conf = rcu_dereference(vif->link_conf[link_id]);
917 if (link_conf) {
918 basic = link_conf->basic_rates;
919 if (link_conf->chanreq.oper.chan)
920 band = link_conf->chanreq.oper.chan->band;
921 }
922 rcu_read_unlock();
923 }
924
925 sband = mvm->hw->wiphy->bands[band];
926 for_each_set_bit(i, &basic, BITS_PER_LONG) {
927 u16 hw = sband->bitrates[i].hw_value;
928
929 if (hw >= IWL_FIRST_OFDM_RATE) {
930 if (lowest_ofdm > hw)
931 lowest_ofdm = hw;
932 } else if (lowest_cck > hw) {
933 lowest_cck = hw;
934 }
935 }
936
937 if (band == NL80211_BAND_2GHZ && !vif->p2p &&
938 vif->type != NL80211_IFTYPE_P2P_DEVICE &&
939 !(info->flags & IEEE80211_TX_CTL_NO_CCK_RATE)) {
940 if (lowest_cck != IWL_RATE_COUNT)
941 rate = lowest_cck;
942 else if (lowest_ofdm != IWL_RATE_COUNT)
943 rate = lowest_ofdm;
944 else
945 rate = IWL_RATE_1M_INDEX;
946 } else if (lowest_ofdm != IWL_RATE_COUNT) {
947 rate = lowest_ofdm;
948 } else {
949 rate = IWL_RATE_6M_INDEX;
950 }
951
952 return rate;
953 }
954
955 u16 iwl_mvm_mac_ctxt_get_beacon_flags(const struct iwl_fw *fw, u8 rate_idx)
956 {
957 u16 flags = iwl_mvm_mac80211_idx_to_hwrate(fw, rate_idx);
958 bool is_new_rate = iwl_fw_lookup_cmd_ver(fw, BEACON_TEMPLATE_CMD, 0) > 10;
959
960 if (rate_idx <= IWL_FIRST_CCK_RATE)
961 flags |= is_new_rate ? IWL_MAC_BEACON_CCK
962 : IWL_MAC_BEACON_CCK_V1;
963
964 return flags;
965 }
966
967 u8 iwl_mvm_mac_ctxt_get_beacon_rate(struct iwl_mvm *mvm,
968 struct ieee80211_tx_info *info,
969 struct ieee80211_vif *vif)
970 {
971 struct ieee80211_supported_band *sband =
972 mvm->hw->wiphy->bands[info->band];
973 u32 legacy = vif->bss_conf.beacon_tx_rate.control[info->band].legacy;
974
975 /* if beacon rate was configured try using it */
976 if (hweight32(legacy) == 1) {
977 u32 rate = ffs(legacy) - 1;
978
979 return sband->bitrates[rate].hw_value;
980 }
981
982 return iwl_mvm_mac_ctxt_get_lowest_rate(mvm, info, vif);
983 }
984
985 static void iwl_mvm_mac_ctxt_set_tx(struct iwl_mvm *mvm,
986 struct ieee80211_vif *vif,
987 struct sk_buff *beacon,
988 struct iwl_tx_cmd *tx)
989 {
990 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
991 struct ieee80211_tx_info *info;
992 u8 rate;
993 u32 tx_flags;
994
995 info = IEEE80211_SKB_CB(beacon);
996
997 /* Set up TX command fields */
998 tx->len = cpu_to_le16((u16)beacon->len);
999 tx->sta_id = mvmvif->deflink.bcast_sta.sta_id;
1000 tx->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
1001 tx_flags = TX_CMD_FLG_SEQ_CTL | TX_CMD_FLG_TSF;
1002 tx_flags |=
1003 iwl_mvm_bt_coex_tx_prio(mvm, (void *)beacon->data, info, 0) <<
1004 TX_CMD_FLG_BT_PRIO_POS;
1005 tx->tx_flags = cpu_to_le32(tx_flags);
1006
1007 if (!fw_has_capa(&mvm->fw->ucode_capa,
1008 IWL_UCODE_TLV_CAPA_BEACON_ANT_SELECTION)) {
1009 iwl_mvm_toggle_tx_ant(mvm, &mvm->mgmt_last_antenna_idx);
1010
1011 tx->rate_n_flags =
1012 cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) <<
1013 RATE_MCS_ANT_POS);
1014 }
1015
1016 rate = iwl_mvm_mac_ctxt_get_beacon_rate(mvm, info, vif);
1017
1018 tx->rate_n_flags |=
1019 cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(mvm->fw, rate));
1020 if (rate == IWL_FIRST_CCK_RATE)
1021 tx->rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK_V1);
1022
1023 }
1024
1025 int iwl_mvm_mac_ctxt_send_beacon_cmd(struct iwl_mvm *mvm,
1026 struct sk_buff *beacon,
1027 void *data, int len)
1028 {
1029 struct iwl_host_cmd cmd = {
1030 .id = BEACON_TEMPLATE_CMD,
1031 .flags = CMD_ASYNC,
1032 };
1033
1034 cmd.len[0] = len;
1035 cmd.data[0] = data;
1036 cmd.dataflags[0] = 0;
1037 cmd.len[1] = beacon->len;
1038 cmd.data[1] = beacon->data;
1039 cmd.dataflags[1] = IWL_HCMD_DFL_DUP;
1040
1041 return iwl_mvm_send_cmd(mvm, &cmd);
1042 }
1043
1044 static int iwl_mvm_mac_ctxt_send_beacon_v6(struct iwl_mvm *mvm,
1045 struct ieee80211_vif *vif,
1046 struct sk_buff *beacon)
1047 {
1048 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1049 struct iwl_mac_beacon_cmd_v6 beacon_cmd = {};
1050
1051 iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx);
1052
1053 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
1054
1055 if (vif->type == NL80211_IFTYPE_AP)
1056 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
1057 &beacon_cmd.tim_size,
1058 beacon->data, beacon->len);
1059
1060 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
1061 sizeof(beacon_cmd));
1062 }
1063
1064 static int iwl_mvm_mac_ctxt_send_beacon_v7(struct iwl_mvm *mvm,
1065 struct ieee80211_vif *vif,
1066 struct sk_buff *beacon)
1067 {
1068 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1069 struct iwl_mac_beacon_cmd_v7 beacon_cmd = {};
1070
1071 iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx);
1072
1073 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
1074
1075 if (vif->type == NL80211_IFTYPE_AP)
1076 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
1077 &beacon_cmd.tim_size,
1078 beacon->data, beacon->len);
1079
1080 beacon_cmd.csa_offset =
1081 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
1082 WLAN_EID_CHANNEL_SWITCH,
1083 beacon->len));
1084 beacon_cmd.ecsa_offset =
1085 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
1086 WLAN_EID_EXT_CHANSWITCH_ANN,
1087 beacon->len));
1088
1089 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
1090 sizeof(beacon_cmd));
1091 }
1092
1093 bool iwl_mvm_enable_fils(struct iwl_mvm *mvm,
1094 struct ieee80211_chanctx_conf *ctx)
1095 {
1096 if (IWL_MVM_DISABLE_AP_FILS)
1097 return false;
1098
1099 if (cfg80211_channel_is_psc(ctx->def.chan))
1100 return true;
1101
1102 return (ctx->def.chan->band == NL80211_BAND_6GHZ &&
1103 ctx->def.width >= NL80211_CHAN_WIDTH_80);
1104 }
1105
1106 static int iwl_mvm_mac_ctxt_send_beacon_v9(struct iwl_mvm *mvm,
1107 struct ieee80211_vif *vif,
1108 struct sk_buff *beacon,
1109 struct ieee80211_bss_conf *link_conf)
1110 {
1111 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1112 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(beacon);
1113 struct iwl_mac_beacon_cmd beacon_cmd = {};
1114 u8 rate = iwl_mvm_mac_ctxt_get_beacon_rate(mvm, info, vif);
1115 u16 flags;
1116 struct ieee80211_chanctx_conf *ctx;
1117 int channel;
1118 flags = iwl_mvm_mac_ctxt_get_beacon_flags(mvm->fw, rate);
1119
1120 /* Enable FILS on PSC channels only */
1121 rcu_read_lock();
1122 ctx = rcu_dereference(link_conf->chanctx_conf);
1123 channel = ieee80211_frequency_to_channel(ctx->def.chan->center_freq);
1124 WARN_ON(channel == 0);
1125 if (iwl_mvm_enable_fils(mvm, ctx)) {
1126 flags |= iwl_fw_lookup_cmd_ver(mvm->fw, BEACON_TEMPLATE_CMD,
1127 0) > 10 ?
1128 IWL_MAC_BEACON_FILS :
1129 IWL_MAC_BEACON_FILS_V1;
1130 beacon_cmd.short_ssid =
1131 cpu_to_le32(~crc32_le(~0, vif->cfg.ssid,
1132 vif->cfg.ssid_len));
1133 }
1134 rcu_read_unlock();
1135
1136 beacon_cmd.flags = cpu_to_le16(flags);
1137 beacon_cmd.byte_cnt = cpu_to_le16((u16)beacon->len);
1138
1139 if (WARN_ON(!mvmvif->link[link_conf->link_id]))
1140 return -EINVAL;
1141
1142 if (iwl_fw_lookup_cmd_ver(mvm->fw, BEACON_TEMPLATE_CMD, 0) > 12)
1143 beacon_cmd.link_id =
1144 cpu_to_le32(mvmvif->link[link_conf->link_id]->fw_link_id);
1145 else
1146 beacon_cmd.link_id = cpu_to_le32((u32)mvmvif->id);
1147
1148 if (vif->type == NL80211_IFTYPE_AP)
1149 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
1150 &beacon_cmd.tim_size,
1151 beacon->data, beacon->len);
1152
1153 beacon_cmd.csa_offset =
1154 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
1155 WLAN_EID_CHANNEL_SWITCH,
1156 beacon->len));
1157 beacon_cmd.ecsa_offset =
1158 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
1159 WLAN_EID_EXT_CHANSWITCH_ANN,
1160 beacon->len));
1161
1162 if (vif->type == NL80211_IFTYPE_AP &&
1163 iwl_fw_lookup_cmd_ver(mvm->fw, BEACON_TEMPLATE_CMD, 0) >= 14)
1164 beacon_cmd.btwt_offset =
1165 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
1166 WLAN_EID_S1G_TWT,
1167 beacon->len));
1168
1169 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
1170 sizeof(beacon_cmd));
1171 }
1172
1173 static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm,
1174 struct ieee80211_vif *vif,
1175 struct sk_buff *beacon,
1176 struct ieee80211_bss_conf *link_conf)
1177 {
1178 if (WARN_ON(!beacon))
1179 return -EINVAL;
1180
1181 if (IWL_MVM_NON_TRANSMITTING_AP)
1182 return 0;
1183
1184 if (!fw_has_capa(&mvm->fw->ucode_capa,
1185 IWL_UCODE_TLV_CAPA_CSA_AND_TBTT_OFFLOAD))
1186 return iwl_mvm_mac_ctxt_send_beacon_v6(mvm, vif, beacon);
1187
1188 if (fw_has_api(&mvm->fw->ucode_capa,
1189 IWL_UCODE_TLV_API_NEW_BEACON_TEMPLATE))
1190 return iwl_mvm_mac_ctxt_send_beacon_v9(mvm, vif, beacon,
1191 link_conf);
1192
1193 return iwl_mvm_mac_ctxt_send_beacon_v7(mvm, vif, beacon);
1194 }
1195
1196 /* The beacon template for the AP/GO/IBSS has changed and needs update */
1197 int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm,
1198 struct ieee80211_vif *vif,
1199 struct ieee80211_bss_conf *link_conf)
1200 {
1201 struct sk_buff *beacon;
1202 int ret;
1203
1204 WARN_ON(vif->type != NL80211_IFTYPE_AP &&
1205 vif->type != NL80211_IFTYPE_ADHOC);
1206
1207 beacon = ieee80211_beacon_get_template(mvm->hw, vif, NULL,
1208 link_conf->link_id);
1209 if (!beacon)
1210 return -ENOMEM;
1211
1212 #ifdef CONFIG_IWLWIFI_DEBUGFS
1213 if (mvm->beacon_inject_active) {
1214 dev_kfree_skb(beacon);
1215 return -EBUSY;
1216 }
1217 #endif
1218
1219 ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon, link_conf);
1220 dev_kfree_skb(beacon);
1221 return ret;
1222 }
1223
1224 struct iwl_mvm_mac_ap_iterator_data {
1225 struct iwl_mvm *mvm;
1226 struct ieee80211_vif *vif;
1227 u32 beacon_device_ts;
1228 u16 beacon_int;
1229 };
1230
1231 /* Find the beacon_device_ts and beacon_int for a managed interface */
1232 static void iwl_mvm_mac_ap_iterator(void *_data, u8 *mac,
1233 struct ieee80211_vif *vif)
1234 {
1235 struct iwl_mvm_mac_ap_iterator_data *data = _data;
1236
1237 if (vif->type != NL80211_IFTYPE_STATION || !vif->cfg.assoc)
1238 return;
1239
1240 /* Station client has higher priority over P2P client*/
1241 if (vif->p2p && data->beacon_device_ts)
1242 return;
1243
1244 data->beacon_device_ts = vif->bss_conf.sync_device_ts;
1245 data->beacon_int = vif->bss_conf.beacon_int;
1246 }
1247
1248 /*
1249 * Fill the filter flags for mac context of type AP or P2P GO.
1250 */
1251 void iwl_mvm_mac_ctxt_cmd_ap_set_filter_flags(struct iwl_mvm *mvm,
1252 struct iwl_mvm_vif *mvmvif,
1253 __le32 *filter_flags,
1254 int accept_probe_req_flag,
1255 int accept_beacon_flag)
1256 {
1257 /*
1258 * in AP mode, pass probe requests and beacons from other APs
1259 * (needed for ht protection); when there're no any associated
1260 * station don't ask FW to pass beacons to prevent unnecessary
1261 * wake-ups.
1262 */
1263 *filter_flags |= cpu_to_le32(accept_probe_req_flag);
1264 if (mvmvif->ap_assoc_sta_count || !mvm->drop_bcn_ap_mode) {
1265 *filter_flags |= cpu_to_le32(accept_beacon_flag);
1266 IWL_DEBUG_HC(mvm, "Asking FW to pass beacons\n");
1267 } else {
1268 IWL_DEBUG_HC(mvm, "No need to receive beacons\n");
1269 }
1270 }
1271
1272 /*
1273 * Fill the specific data for mac context of type AP of P2P GO
1274 */
1275 static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm,
1276 struct ieee80211_vif *vif,
1277 struct iwl_mac_ctx_cmd *cmd,
1278 struct iwl_mac_data_ap *ctxt_ap,
1279 bool add)
1280 {
1281 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1282 struct iwl_mvm_mac_ap_iterator_data data = {
1283 .mvm = mvm,
1284 .vif = vif,
1285 .beacon_device_ts = 0
1286 };
1287
1288 /* in AP mode, the MCAST FIFO takes the EDCA params from VO */
1289 cmd->ac[IWL_MVM_TX_FIFO_VO].fifos_mask |= BIT(IWL_MVM_TX_FIFO_MCAST);
1290
1291 iwl_mvm_mac_ctxt_cmd_ap_set_filter_flags(mvm, mvmvif,
1292 &cmd->filter_flags,
1293 MAC_FILTER_IN_PROBE_REQUEST,
1294 MAC_FILTER_IN_BEACON);
1295
1296 ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int);
1297 ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
1298 vif->bss_conf.dtim_period);
1299
1300 if (!fw_has_api(&mvm->fw->ucode_capa,
1301 IWL_UCODE_TLV_API_STA_TYPE))
1302 ctxt_ap->mcast_qid = cpu_to_le32(mvmvif->deflink.cab_queue);
1303
1304 /*
1305 * Only set the beacon time when the MAC is being added, when we
1306 * just modify the MAC then we should keep the time -- the firmware
1307 * can otherwise have a "jumping" TBTT.
1308 */
1309 if (add) {
1310 /*
1311 * If there is a station/P2P client interface which is
1312 * associated, set the AP's TBTT far enough from the station's
1313 * TBTT. Otherwise, set it to the current system time
1314 */
1315 ieee80211_iterate_active_interfaces_atomic(
1316 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
1317 iwl_mvm_mac_ap_iterator, &data);
1318
1319 if (data.beacon_device_ts) {
1320 u32 rand = get_random_u32_inclusive(36, 63);
1321 mvmvif->ap_beacon_time = data.beacon_device_ts +
1322 ieee80211_tu_to_usec(data.beacon_int * rand /
1323 100);
1324 } else {
1325 mvmvif->ap_beacon_time = iwl_mvm_get_systime(mvm);
1326 }
1327 }
1328
1329 ctxt_ap->beacon_time = cpu_to_le32(mvmvif->ap_beacon_time);
1330 ctxt_ap->beacon_tsf = 0; /* unused */
1331
1332 /* TODO: Assume that the beacon id == mac context id */
1333 ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id);
1334 }
1335
1336 static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm,
1337 struct ieee80211_vif *vif,
1338 u32 action)
1339 {
1340 struct iwl_mac_ctx_cmd cmd = {};
1341
1342 WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p);
1343
1344 /* Fill the common data for all mac context types */
1345 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
1346
1347 /* Fill the data specific for ap mode */
1348 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.ap,
1349 action == FW_CTXT_ACTION_ADD);
1350
1351 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
1352 }
1353
1354 static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm,
1355 struct ieee80211_vif *vif,
1356 u32 action)
1357 {
1358 struct iwl_mac_ctx_cmd cmd = {};
1359 struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr;
1360
1361 WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p);
1362
1363 /* Fill the common data for all mac context types */
1364 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
1365
1366 /* Fill the data specific for GO mode */
1367 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.go.ap,
1368 action == FW_CTXT_ACTION_ADD);
1369
1370 cmd.go.ctwin = cpu_to_le32(noa->oppps_ctwindow &
1371 IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
1372 cmd.go.opp_ps_enabled =
1373 cpu_to_le32(!!(noa->oppps_ctwindow &
1374 IEEE80211_P2P_OPPPS_ENABLE_BIT));
1375
1376 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
1377 }
1378
1379 static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1380 u32 action, bool force_assoc_off,
1381 const u8 *bssid_override)
1382 {
1383 switch (vif->type) {
1384 case NL80211_IFTYPE_STATION:
1385 return iwl_mvm_mac_ctxt_cmd_sta(mvm, vif, action,
1386 force_assoc_off,
1387 bssid_override);
1388 case NL80211_IFTYPE_AP:
1389 if (!vif->p2p)
1390 return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action);
1391 else
1392 return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action);
1393 case NL80211_IFTYPE_MONITOR:
1394 return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action);
1395 case NL80211_IFTYPE_P2P_DEVICE:
1396 return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action);
1397 case NL80211_IFTYPE_ADHOC:
1398 return iwl_mvm_mac_ctxt_cmd_ibss(mvm, vif, action);
1399 default:
1400 break;
1401 }
1402
1403 return -EOPNOTSUPP;
1404 }
1405
1406 int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1407 {
1408 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1409 int ret;
1410
1411 if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n",
1412 vif->addr, ieee80211_vif_type_p2p(vif)))
1413 return -EIO;
1414
1415 ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD,
1416 true, NULL);
1417 if (ret)
1418 return ret;
1419
1420 /* will only do anything at resume from D3 time */
1421 iwl_mvm_set_last_nonqos_seq(mvm, vif);
1422
1423 mvmvif->uploaded = true;
1424 return 0;
1425 }
1426
1427 int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1428 bool force_assoc_off, const u8 *bssid_override)
1429 {
1430 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1431
1432 if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n",
1433 vif->addr, ieee80211_vif_type_p2p(vif)))
1434 return -EIO;
1435
1436 return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY,
1437 force_assoc_off, bssid_override);
1438 }
1439
1440 int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1441 {
1442 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1443 struct iwl_mac_ctx_cmd cmd;
1444 int ret;
1445
1446 if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n",
1447 vif->addr, ieee80211_vif_type_p2p(vif)))
1448 return -EIO;
1449
1450 memset(&cmd, 0, sizeof(cmd));
1451
1452 cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
1453 mvmvif->color));
1454 cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE);
1455
1456 ret = iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
1457 if (ret)
1458 return ret;
1459
1460 mvmvif->uploaded = false;
1461
1462 if (vif->type == NL80211_IFTYPE_MONITOR) {
1463 __clear_bit(IEEE80211_HW_RX_INCLUDES_FCS, mvm->hw->flags);
1464 iwl_mvm_dealloc_snif_sta(mvm);
1465 }
1466
1467 return 0;
1468 }
1469
1470 static void iwl_mvm_csa_count_down(struct iwl_mvm *mvm,
1471 struct ieee80211_vif *csa_vif, u32 gp2,
1472 bool tx_success)
1473 {
1474 struct iwl_mvm_vif *mvmvif =
1475 iwl_mvm_vif_from_mac80211(csa_vif);
1476
1477 /* Don't start to countdown from a failed beacon */
1478 if (!tx_success && !mvmvif->csa_countdown)
1479 return;
1480
1481 mvmvif->csa_countdown = true;
1482
1483 if (!ieee80211_beacon_cntdwn_is_complete(csa_vif, 0)) {
1484 int c = ieee80211_beacon_update_cntdwn(csa_vif, 0);
1485
1486 iwl_mvm_mac_ctxt_beacon_changed(mvm, csa_vif,
1487 &csa_vif->bss_conf);
1488 if (csa_vif->p2p &&
1489 !iwl_mvm_te_scheduled(&mvmvif->time_event_data) && gp2 &&
1490 tx_success) {
1491 u32 rel_time = (c + 1) *
1492 csa_vif->bss_conf.beacon_int -
1493 IWL_MVM_CHANNEL_SWITCH_TIME_GO;
1494 u32 apply_time = gp2 + rel_time * 1024;
1495
1496 iwl_mvm_schedule_csa_period(mvm, csa_vif,
1497 IWL_MVM_CHANNEL_SWITCH_TIME_GO -
1498 IWL_MVM_CHANNEL_SWITCH_MARGIN,
1499 apply_time);
1500 }
1501 } else if (!iwl_mvm_te_scheduled(&mvmvif->time_event_data)) {
1502 /* we don't have CSA NoA scheduled yet, switch now */
1503 ieee80211_csa_finish(csa_vif, 0);
1504 RCU_INIT_POINTER(mvm->csa_vif, NULL);
1505 }
1506 }
1507
1508 void iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm,
1509 struct iwl_rx_cmd_buffer *rxb)
1510 {
1511 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1512 unsigned int pkt_len = iwl_rx_packet_payload_len(pkt);
1513 struct iwl_extended_beacon_notif *beacon = (void *)pkt->data;
1514 struct iwl_extended_beacon_notif_v5 *beacon_v5 = (void *)pkt->data;
1515 struct ieee80211_vif *csa_vif;
1516 struct ieee80211_vif *tx_blocked_vif;
1517 struct agg_tx_status *agg_status;
1518 u16 status;
1519
1520 lockdep_assert_held(&mvm->mutex);
1521
1522 mvm->ap_last_beacon_gp2 = le32_to_cpu(beacon->gp2);
1523
1524 if (!iwl_mvm_is_short_beacon_notif_supported(mvm)) {
1525 struct iwl_tx_resp *beacon_notify_hdr =
1526 &beacon_v5->beacon_notify_hdr;
1527
1528 if (unlikely(pkt_len < sizeof(*beacon_v5)))
1529 return;
1530
1531 mvm->ibss_manager = beacon_v5->ibss_mgr_status != 0;
1532 agg_status = iwl_mvm_get_agg_status(mvm, beacon_notify_hdr);
1533 status = le16_to_cpu(agg_status->status) & TX_STATUS_MSK;
1534 IWL_DEBUG_RX(mvm,
1535 "beacon status %#x retries:%d tsf:0x%016llX gp2:0x%X rate:%d\n",
1536 status, beacon_notify_hdr->failure_frame,
1537 le64_to_cpu(beacon->tsf),
1538 mvm->ap_last_beacon_gp2,
1539 le32_to_cpu(beacon_notify_hdr->initial_rate));
1540 } else {
1541 if (unlikely(pkt_len < sizeof(*beacon)))
1542 return;
1543
1544 mvm->ibss_manager = beacon->ibss_mgr_status != 0;
1545 status = le32_to_cpu(beacon->status) & TX_STATUS_MSK;
1546 IWL_DEBUG_RX(mvm,
1547 "beacon status %#x tsf:0x%016llX gp2:0x%X\n",
1548 status, le64_to_cpu(beacon->tsf),
1549 mvm->ap_last_beacon_gp2);
1550 }
1551
1552 csa_vif = rcu_dereference_protected(mvm->csa_vif,
1553 lockdep_is_held(&mvm->mutex));
1554 if (unlikely(csa_vif && csa_vif->bss_conf.csa_active))
1555 iwl_mvm_csa_count_down(mvm, csa_vif, mvm->ap_last_beacon_gp2,
1556 (status == TX_STATUS_SUCCESS));
1557
1558 tx_blocked_vif = rcu_dereference_protected(mvm->csa_tx_blocked_vif,
1559 lockdep_is_held(&mvm->mutex));
1560 if (unlikely(tx_blocked_vif)) {
1561 struct iwl_mvm_vif *mvmvif =
1562 iwl_mvm_vif_from_mac80211(tx_blocked_vif);
1563
1564 /*
1565 * The channel switch is started and we have blocked the
1566 * stations. If this is the first beacon (the timeout wasn't
1567 * set), set the unblock timeout, otherwise countdown
1568 */
1569 if (!mvm->csa_tx_block_bcn_timeout)
1570 mvm->csa_tx_block_bcn_timeout =
1571 IWL_MVM_CS_UNBLOCK_TX_TIMEOUT;
1572 else
1573 mvm->csa_tx_block_bcn_timeout--;
1574
1575 /* Check if the timeout is expired, and unblock tx */
1576 if (mvm->csa_tx_block_bcn_timeout == 0) {
1577 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
1578 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
1579 }
1580 }
1581 }
1582
1583 static void
1584 iwl_mvm_handle_missed_beacons_notif(struct iwl_mvm *mvm,
1585 const struct iwl_missed_beacons_notif *mb,
1586 struct iwl_rx_packet *pkt)
1587 {
1588 struct iwl_fw_dbg_trigger_missed_bcon *bcon_trig;
1589 struct iwl_fw_dbg_trigger_tlv *trigger;
1590 u32 stop_trig_missed_bcon, stop_trig_missed_bcon_since_rx;
1591 u32 rx_missed_bcon, rx_missed_bcon_since_rx;
1592 struct ieee80211_vif *vif;
1593 /* Id can be mac/link id depending on the notification version */
1594 u32 id = le32_to_cpu(mb->link_id);
1595 union iwl_dbg_tlv_tp_data tp_data = { .fw_pkt = pkt };
1596 u32 mac_type;
1597 int link_id = -1;
1598 u8 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
1599 MISSED_BEACONS_NOTIFICATION,
1600 0);
1601 u8 new_notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, MAC_CONF_GROUP,
1602 MISSED_BEACONS_NOTIF, 0);
1603 struct ieee80211_bss_conf *bss_conf;
1604
1605 /* If the firmware uses the new notification (from MAC_CONF_GROUP),
1606 * refer to that notification's version.
1607 * Note that the new notification from MAC_CONF_GROUP starts from
1608 * version 5.
1609 */
1610 if (new_notif_ver)
1611 notif_ver = new_notif_ver;
1612
1613 /* before version four the ID in the notification refers to mac ID */
1614 if (notif_ver < 4) {
1615 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, false);
1616 bss_conf = &vif->bss_conf;
1617 } else {
1618 bss_conf = iwl_mvm_rcu_fw_link_id_to_link_conf(mvm, id, false);
1619
1620 if (!bss_conf)
1621 return;
1622
1623 vif = bss_conf->vif;
1624 link_id = bss_conf->link_id;
1625 }
1626
1627 IWL_DEBUG_INFO(mvm,
1628 "missed bcn %s_id=%u, consecutive=%u (%u)\n",
1629 notif_ver < 4 ? "mac" : "link",
1630 id,
1631 le32_to_cpu(mb->consec_missed_beacons),
1632 le32_to_cpu(mb->consec_missed_beacons_since_last_rx));
1633
1634 if (!vif)
1635 return;
1636
1637 mac_type = iwl_mvm_get_mac_type(vif);
1638
1639 IWL_DEBUG_INFO(mvm, "missed beacon mac_type=%u,\n", mac_type);
1640
1641 mvm->trans->dbg.dump_file_name_ext_valid = true;
1642 snprintf(mvm->trans->dbg.dump_file_name_ext, IWL_FW_INI_MAX_NAME,
1643 "MacId_%d_MacType_%d", id, mac_type);
1644
1645 rx_missed_bcon = le32_to_cpu(mb->consec_missed_beacons);
1646 rx_missed_bcon_since_rx =
1647 le32_to_cpu(mb->consec_missed_beacons_since_last_rx);
1648 /*
1649 * TODO: the threshold should be adjusted based on latency conditions,
1650 * and/or in case of a CS flow on one of the other AP vifs.
1651 */
1652 if (rx_missed_bcon >= IWL_MVM_MISSED_BEACONS_THRESHOLD_LONG) {
1653 if (rx_missed_bcon_since_rx >= IWL_MVM_MISSED_BEACONS_SINCE_RX_THOLD) {
1654 iwl_mvm_connection_loss(mvm, vif, "missed beacons");
1655 } else {
1656 IWL_WARN(mvm,
1657 "missed beacons exceeds threshold, but receiving data. Stay connected, Expect bugs.\n");
1658 IWL_WARN(mvm,
1659 "missed_beacons:%d, missed_beacons_since_rx:%d\n",
1660 rx_missed_bcon, rx_missed_bcon_since_rx);
1661 }
1662 } else if (link_id >= 0 && hweight16(vif->active_links) > 1) {
1663 u32 bss_param_ch_cnt_link_id =
1664 bss_conf->bss_param_ch_cnt_link_id;
1665 u32 scnd_lnk_bcn_lost = 0;
1666
1667 if (notif_ver >= 5 &&
1668 !IWL_FW_CHECK(mvm,
1669 le32_to_cpu(mb->other_link_id) == IWL_MVM_FW_LINK_ID_INVALID,
1670 "No data for other link id but we are in EMLSR active_links: 0x%x\n",
1671 vif->active_links))
1672 scnd_lnk_bcn_lost =
1673 le32_to_cpu(mb->consec_missed_beacons_other_link);
1674
1675 /* Exit EMLSR if we lost more than
1676 * IWL_MVM_MISSED_BEACONS_EXIT_ESR_THRESH beacons on boths links
1677 * OR more than IWL_MVM_BCN_LOSS_EXIT_ESR_THRESH on any link.
1678 * OR more than IWL_MVM_BCN_LOSS_EXIT_ESR_THRESH_BSS_PARAM_CHANGED
1679 * and the link's bss_param_ch_count has changed.
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 (bss_param_ch_cnt_link_id != link_id &&
1685 rx_missed_bcon >= IWL_MVM_BCN_LOSS_EXIT_ESR_THRESH_BSS_PARAM_CHANGED))
1686 iwl_mvm_exit_esr(mvm, vif,
1687 IWL_MVM_ESR_EXIT_MISSED_BEACON,
1688 iwl_mvm_get_primary_link(vif));
1689 } else if (rx_missed_bcon_since_rx > IWL_MVM_MISSED_BEACONS_THRESHOLD) {
1690 if (!iwl_mvm_has_new_tx_api(mvm))
1691 ieee80211_beacon_loss(vif);
1692 else
1693 ieee80211_cqm_beacon_loss_notify(vif, GFP_ATOMIC);
1694
1695 /* try to switch links, no-op if we don't have MLO */
1696 iwl_mvm_int_mlo_scan(mvm, vif);
1697 }
1698
1699 iwl_dbg_tlv_time_point(&mvm->fwrt,
1700 IWL_FW_INI_TIME_POINT_MISSED_BEACONS, &tp_data);
1701
1702 trigger = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
1703 FW_DBG_TRIGGER_MISSED_BEACONS);
1704 if (!trigger)
1705 return;
1706
1707 bcon_trig = (void *)trigger->data;
1708 stop_trig_missed_bcon = le32_to_cpu(bcon_trig->stop_consec_missed_bcon);
1709 stop_trig_missed_bcon_since_rx =
1710 le32_to_cpu(bcon_trig->stop_consec_missed_bcon_since_rx);
1711
1712 /* TODO: implement start trigger */
1713
1714 if (rx_missed_bcon_since_rx >= stop_trig_missed_bcon_since_rx ||
1715 rx_missed_bcon >= stop_trig_missed_bcon)
1716 iwl_fw_dbg_collect_trig(&mvm->fwrt, trigger, NULL);
1717 }
1718
1719 void iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm *mvm,
1720 struct iwl_rx_cmd_buffer *rxb)
1721 {
1722 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1723
1724 iwl_mvm_handle_missed_beacons_notif(mvm, (const void *)pkt->data, pkt);
1725 }
1726
1727 void iwl_mvm_rx_missed_beacons_notif_legacy(struct iwl_mvm *mvm,
1728 struct iwl_rx_cmd_buffer *rxb)
1729 {
1730 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1731 const struct iwl_missed_beacons_notif_v4 *mb_v4 =
1732 (const void *)pkt->data;
1733 struct iwl_missed_beacons_notif mb = {
1734 .link_id = mb_v4->link_id,
1735 .consec_missed_beacons = mb_v4->consec_missed_beacons,
1736 .consec_missed_beacons_since_last_rx =
1737 mb_v4->consec_missed_beacons_since_last_rx,
1738 .other_link_id = cpu_to_le32(IWL_MVM_FW_LINK_ID_INVALID),
1739 };
1740
1741 iwl_mvm_handle_missed_beacons_notif(mvm, &mb, pkt);
1742 }
1743
1744 void iwl_mvm_rx_stored_beacon_notif(struct iwl_mvm *mvm,
1745 struct iwl_rx_cmd_buffer *rxb)
1746 {
1747 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1748 unsigned int pkt_len = iwl_rx_packet_payload_len(pkt);
1749 struct iwl_stored_beacon_notif_common *sb = (void *)pkt->data;
1750 struct ieee80211_rx_status rx_status;
1751 struct sk_buff *skb;
1752 u8 *data;
1753 u32 size = le32_to_cpu(sb->byte_count);
1754 int ver = iwl_fw_lookup_cmd_ver(mvm->fw,
1755 WIDE_ID(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF),
1756 0);
1757
1758 if (size == 0)
1759 return;
1760
1761 /* handle per-version differences */
1762 if (ver <= 2) {
1763 struct iwl_stored_beacon_notif_v2 *sb_v2 = (void *)pkt->data;
1764
1765 if (pkt_len < struct_size(sb_v2, data, size))
1766 return;
1767
1768 data = sb_v2->data;
1769 } else {
1770 struct iwl_stored_beacon_notif_v3 *sb_v3 = (void *)pkt->data;
1771
1772 if (pkt_len < struct_size(sb_v3, data, size))
1773 return;
1774
1775 data = sb_v3->data;
1776 }
1777
1778 skb = alloc_skb(size, GFP_ATOMIC);
1779 if (!skb) {
1780 IWL_ERR(mvm, "alloc_skb failed\n");
1781 return;
1782 }
1783
1784 /* update rx_status according to the notification's metadata */
1785 memset(&rx_status, 0, sizeof(rx_status));
1786 rx_status.mactime = le64_to_cpu(sb->tsf);
1787 /* TSF as indicated by the firmware is at INA time */
1788 rx_status.flag |= RX_FLAG_MACTIME_PLCP_START;
1789 rx_status.device_timestamp = le32_to_cpu(sb->system_time);
1790 rx_status.band =
1791 (sb->band & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ?
1792 NL80211_BAND_2GHZ : NL80211_BAND_5GHZ;
1793 rx_status.freq =
1794 ieee80211_channel_to_frequency(le16_to_cpu(sb->channel),
1795 rx_status.band);
1796
1797 /* copy the data */
1798 skb_put_data(skb, data, size);
1799 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
1800
1801 /* pass it as regular rx to mac80211 */
1802 ieee80211_rx_napi(mvm->hw, NULL, skb, NULL);
1803 }
1804
1805 void iwl_mvm_probe_resp_data_notif(struct iwl_mvm *mvm,
1806 struct iwl_rx_cmd_buffer *rxb)
1807 {
1808 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1809 struct iwl_probe_resp_data_notif *notif = (void *)pkt->data;
1810 struct iwl_probe_resp_data *old_data, *new_data;
1811 u32 id = le32_to_cpu(notif->mac_id);
1812 struct ieee80211_vif *vif;
1813 struct iwl_mvm_vif *mvmvif;
1814
1815 IWL_DEBUG_INFO(mvm, "Probe response data notif: noa %d, csa %d\n",
1816 notif->noa_active, notif->csa_counter);
1817
1818 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, false);
1819 if (!vif)
1820 return;
1821
1822 mvmvif = iwl_mvm_vif_from_mac80211(vif);
1823
1824 new_data = kzalloc(sizeof(*new_data), GFP_KERNEL);
1825 if (!new_data)
1826 return;
1827
1828 memcpy(&new_data->notif, notif, sizeof(new_data->notif));
1829
1830 /* noa_attr contains 1 reserved byte, need to substruct it */
1831 new_data->noa_len = sizeof(struct ieee80211_vendor_ie) +
1832 sizeof(new_data->notif.noa_attr) - 1;
1833
1834 /*
1835 * If it's a one time NoA, only one descriptor is needed,
1836 * adjust the length according to len_low.
1837 */
1838 if (new_data->notif.noa_attr.len_low ==
1839 sizeof(struct ieee80211_p2p_noa_desc) + 2)
1840 new_data->noa_len -= sizeof(struct ieee80211_p2p_noa_desc);
1841
1842 old_data = rcu_dereference_protected(mvmvif->deflink.probe_resp_data,
1843 lockdep_is_held(&mvmvif->mvm->mutex));
1844 rcu_assign_pointer(mvmvif->deflink.probe_resp_data, new_data);
1845
1846 if (old_data)
1847 kfree_rcu(old_data, rcu_head);
1848
1849 if (notif->csa_counter != IWL_PROBE_RESP_DATA_NO_CSA &&
1850 notif->csa_counter >= 1)
1851 ieee80211_beacon_set_cntdwn(vif, notif->csa_counter);
1852 }
1853
1854 void iwl_mvm_channel_switch_start_notif(struct iwl_mvm *mvm,
1855 struct iwl_rx_cmd_buffer *rxb)
1856 {
1857 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1858 struct ieee80211_vif *csa_vif, *vif;
1859 struct iwl_mvm_vif *mvmvif, *csa_mvmvif;
1860 u32 id_n_color, csa_id;
1861 /* save mac_id or link_id to use later to cancel csa if needed */
1862 u32 id;
1863 u32 mac_link_id = 0;
1864 u8 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, MAC_CONF_GROUP,
1865 CHANNEL_SWITCH_START_NOTIF, 0);
1866 bool csa_active;
1867
1868 rcu_read_lock();
1869
1870 if (notif_ver < 3) {
1871 struct iwl_channel_switch_start_notif_v1 *notif = (void *)pkt->data;
1872 u32 mac_id;
1873
1874 id_n_color = le32_to_cpu(notif->id_and_color);
1875 mac_id = id_n_color & FW_CTXT_ID_MSK;
1876
1877 vif = iwl_mvm_rcu_dereference_vif_id(mvm, mac_id, true);
1878 if (!vif)
1879 goto out_unlock;
1880
1881 id = mac_id;
1882 csa_active = vif->bss_conf.csa_active;
1883 } else {
1884 struct iwl_channel_switch_start_notif *notif = (void *)pkt->data;
1885 u32 link_id = le32_to_cpu(notif->link_id);
1886 struct ieee80211_bss_conf *bss_conf =
1887 iwl_mvm_rcu_fw_link_id_to_link_conf(mvm, link_id, true);
1888
1889 if (!bss_conf)
1890 goto out_unlock;
1891
1892 id = link_id;
1893 mac_link_id = bss_conf->link_id;
1894 vif = bss_conf->vif;
1895 csa_active = bss_conf->csa_active;
1896 }
1897
1898 mvmvif = iwl_mvm_vif_from_mac80211(vif);
1899 if (notif_ver >= 3)
1900 id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color);
1901
1902 switch (vif->type) {
1903 case NL80211_IFTYPE_AP:
1904 csa_vif = rcu_dereference(mvm->csa_vif);
1905 if (WARN_ON(!csa_vif || !csa_vif->bss_conf.csa_active ||
1906 csa_vif != vif))
1907 goto out_unlock;
1908
1909 csa_mvmvif = iwl_mvm_vif_from_mac80211(csa_vif);
1910 csa_id = FW_CMD_ID_AND_COLOR(csa_mvmvif->id, csa_mvmvif->color);
1911 if (WARN(csa_id != id_n_color,
1912 "channel switch noa notification on unexpected vif (csa_vif=%d, notif=%d)",
1913 csa_id, id_n_color))
1914 goto out_unlock;
1915
1916 IWL_DEBUG_INFO(mvm, "Channel Switch Started Notification\n");
1917
1918 schedule_delayed_work(&mvm->cs_tx_unblock_dwork,
1919 msecs_to_jiffies(IWL_MVM_CS_UNBLOCK_TX_TIMEOUT *
1920 csa_vif->bss_conf.beacon_int));
1921
1922 ieee80211_csa_finish(csa_vif, 0);
1923
1924 rcu_read_unlock();
1925
1926 RCU_INIT_POINTER(mvm->csa_vif, NULL);
1927 return;
1928 case NL80211_IFTYPE_STATION:
1929 /*
1930 * if we don't know about an ongoing channel switch,
1931 * make sure FW cancels it
1932 */
1933 if (iwl_fw_lookup_notif_ver(mvm->fw, MAC_CONF_GROUP,
1934 CHANNEL_SWITCH_ERROR_NOTIF,
1935 0) && !csa_active) {
1936 IWL_DEBUG_INFO(mvm, "Channel Switch was canceled\n");
1937 iwl_mvm_cancel_channel_switch(mvm, vif, id);
1938 break;
1939 }
1940
1941 iwl_mvm_csa_client_absent(mvm, vif);
1942 cancel_delayed_work(&mvmvif->csa_work);
1943 ieee80211_chswitch_done(vif, true, mac_link_id);
1944 break;
1945 default:
1946 /* should never happen */
1947 WARN_ON_ONCE(1);
1948 break;
1949 }
1950 out_unlock:
1951 rcu_read_unlock();
1952 }
1953
1954 void iwl_mvm_channel_switch_error_notif(struct iwl_mvm *mvm,
1955 struct iwl_rx_cmd_buffer *rxb)
1956 {
1957 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1958 struct iwl_channel_switch_error_notif *notif = (void *)pkt->data;
1959 struct ieee80211_vif *vif;
1960 u32 id = le32_to_cpu(notif->link_id);
1961 u32 csa_err_mask = le32_to_cpu(notif->csa_err_mask);
1962
1963 rcu_read_lock();
1964 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true);
1965 if (!vif) {
1966 rcu_read_unlock();
1967 return;
1968 }
1969
1970 IWL_DEBUG_INFO(mvm, "FW reports CSA error: id=%u, csa_err_mask=%u\n",
1971 id, csa_err_mask);
1972 if (csa_err_mask & (CS_ERR_COUNT_ERROR |
1973 CS_ERR_LONG_DELAY_AFTER_CS |
1974 CS_ERR_TX_BLOCK_TIMER_EXPIRED))
1975 ieee80211_channel_switch_disconnect(vif, true);
1976 rcu_read_unlock();
1977 }
1978
1979 void iwl_mvm_rx_missed_vap_notif(struct iwl_mvm *mvm,
1980 struct iwl_rx_cmd_buffer *rxb)
1981 {
1982 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1983 struct iwl_missed_vap_notif *mb = (void *)pkt->data;
1984 struct ieee80211_vif *vif;
1985 u32 id = le32_to_cpu(mb->mac_id);
1986
1987 IWL_DEBUG_INFO(mvm,
1988 "missed_vap notify mac_id=%u, num_beacon_intervals_elapsed=%u, profile_periodicity=%u\n",
1989 le32_to_cpu(mb->mac_id),
1990 mb->num_beacon_intervals_elapsed,
1991 mb->profile_periodicity);
1992
1993 rcu_read_lock();
1994
1995 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true);
1996 if (vif)
1997 iwl_mvm_connection_loss(mvm, vif, "missed vap beacon");
1998
1999 rcu_read_unlock();
2000 }
Kernel DRM miscellaneous fixes and cross-tree changes