1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /*
3 * Copyright (C) 2012-2014, 2018-2023 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 struct iwl_mvm_mac_iface_iterator_data {
35 struct iwl_mvm *mvm;
36 struct ieee80211_vif *vif;
37 unsigned long available_mac_ids[BITS_TO_LONGS(NUM_MAC_INDEX_DRIVER)];
38 unsigned long available_tsf_ids[BITS_TO_LONGS(NUM_TSF_IDS)];
39 enum iwl_tsf_id preferred_tsf;
40 bool found_vif;
41 };
42
iwl_mvm_mac_tsf_id_iter(void * _data,u8 * mac,struct ieee80211_vif * vif)43 static void iwl_mvm_mac_tsf_id_iter(void *_data, u8 *mac,
44 struct ieee80211_vif *vif)
45 {
46 struct iwl_mvm_mac_iface_iterator_data *data = _data;
47 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
48 u16 min_bi;
49
50 /* Skip the interface for which we are trying to assign a tsf_id */
51 if (vif == data->vif)
52 return;
53
54 /*
55 * The TSF is a hardware/firmware resource, there are 4 and
56 * the driver should assign and free them as needed. However,
57 * there are cases where 2 MACs should share the same TSF ID
58 * for the purpose of clock sync, an optimization to avoid
59 * clock drift causing overlapping TBTTs/DTIMs for a GO and
60 * client in the system.
61 *
62 * The firmware will decide according to the MAC type which
63 * will be the leader and follower. Clients that need to sync
64 * with a remote station will be the leader, and an AP or GO
65 * will be the follower.
66 *
67 * Depending on the new interface type it can be following
68 * or become the leader of an existing interface.
69 */
70 switch (data->vif->type) {
71 case NL80211_IFTYPE_STATION:
72 /*
73 * The new interface is a client, so if the one we're iterating
74 * is an AP, and the beacon interval of the AP is a multiple or
75 * divisor of the beacon interval of the client, the same TSF
76 * should be used to avoid drift between the new client and
77 * existing AP. The existing AP will get drift updates from the
78 * new client context in this case.
79 */
80 if (vif->type != NL80211_IFTYPE_AP ||
81 data->preferred_tsf != NUM_TSF_IDS ||
82 !test_bit(mvmvif->tsf_id, data->available_tsf_ids))
83 break;
84
85 min_bi = min(data->vif->bss_conf.beacon_int,
86 vif->bss_conf.beacon_int);
87
88 if (!min_bi)
89 break;
90
91 if ((data->vif->bss_conf.beacon_int -
92 vif->bss_conf.beacon_int) % min_bi == 0) {
93 data->preferred_tsf = mvmvif->tsf_id;
94 return;
95 }
96 break;
97
98 case NL80211_IFTYPE_AP:
99 /*
100 * The new interface is AP/GO, so if its beacon interval is a
101 * multiple or a divisor of the beacon interval of an existing
102 * interface, it should get drift updates from an existing
103 * client or use the same TSF as an existing GO. There's no
104 * drift between TSFs internally but if they used different
105 * TSFs then a new client MAC could update one of them and
106 * cause drift that way.
107 */
108 if ((vif->type != NL80211_IFTYPE_AP &&
109 vif->type != NL80211_IFTYPE_STATION) ||
110 data->preferred_tsf != NUM_TSF_IDS ||
111 !test_bit(mvmvif->tsf_id, data->available_tsf_ids))
112 break;
113
114 min_bi = min(data->vif->bss_conf.beacon_int,
115 vif->bss_conf.beacon_int);
116
117 if (!min_bi)
118 break;
119
120 if ((data->vif->bss_conf.beacon_int -
121 vif->bss_conf.beacon_int) % min_bi == 0) {
122 data->preferred_tsf = mvmvif->tsf_id;
123 return;
124 }
125 break;
126 default:
127 /*
128 * For all other interface types there's no need to
129 * take drift into account. Either they're exclusive
130 * like IBSS and monitor, or we don't care much about
131 * their TSF (like P2P Device), but we won't be able
132 * to share the TSF resource.
133 */
134 break;
135 }
136
137 /*
138 * Unless we exited above, we can't share the TSF resource
139 * that the virtual interface we're iterating over is using
140 * with the new one, so clear the available bit and if this
141 * was the preferred one, reset that as well.
142 */
143 __clear_bit(mvmvif->tsf_id, data->available_tsf_ids);
144
145 if (data->preferred_tsf == mvmvif->tsf_id)
146 data->preferred_tsf = NUM_TSF_IDS;
147 }
148
iwl_mvm_mac_iface_iterator(void * _data,u8 * mac,struct ieee80211_vif * vif)149 static void iwl_mvm_mac_iface_iterator(void *_data, u8 *mac,
150 struct ieee80211_vif *vif)
151 {
152 struct iwl_mvm_mac_iface_iterator_data *data = _data;
153 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
154
155 /* Iterator may already find the interface being added -- skip it */
156 if (vif == data->vif) {
157 data->found_vif = true;
158 return;
159 }
160
161 /* Mark MAC IDs as used by clearing the available bit, and
162 * (below) mark TSFs as used if their existing use is not
163 * compatible with the new interface type.
164 * No locking or atomic bit operations are needed since the
165 * data is on the stack of the caller function.
166 */
167 __clear_bit(mvmvif->id, data->available_mac_ids);
168
169 /* find a suitable tsf_id */
170 iwl_mvm_mac_tsf_id_iter(_data, mac, vif);
171 }
172
iwl_mvm_mac_ctxt_recalc_tsf_id(struct iwl_mvm * mvm,struct ieee80211_vif * vif)173 void iwl_mvm_mac_ctxt_recalc_tsf_id(struct iwl_mvm *mvm,
174 struct ieee80211_vif *vif)
175 {
176 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
177 struct iwl_mvm_mac_iface_iterator_data data = {
178 .mvm = mvm,
179 .vif = vif,
180 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 },
181 /* no preference yet */
182 .preferred_tsf = NUM_TSF_IDS,
183 };
184
185 ieee80211_iterate_active_interfaces_atomic(
186 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
187 iwl_mvm_mac_tsf_id_iter, &data);
188
189 if (data.preferred_tsf != NUM_TSF_IDS)
190 mvmvif->tsf_id = data.preferred_tsf;
191 else if (!test_bit(mvmvif->tsf_id, data.available_tsf_ids))
192 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids,
193 NUM_TSF_IDS);
194 }
195
iwl_mvm_mac_ctxt_init(struct iwl_mvm * mvm,struct ieee80211_vif * vif)196 int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
197 {
198 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
199 struct iwl_mvm_mac_iface_iterator_data data = {
200 .mvm = mvm,
201 .vif = vif,
202 .available_mac_ids = { (1 << NUM_MAC_INDEX_DRIVER) - 1 },
203 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 },
204 /* no preference yet */
205 .preferred_tsf = NUM_TSF_IDS,
206 .found_vif = false,
207 };
208 int ret, i;
209
210 lockdep_assert_held(&mvm->mutex);
211
212 /*
213 * Allocate a MAC ID and a TSF for this MAC, along with the queues
214 * and other resources.
215 */
216
217 /*
218 * Before the iterator, we start with all MAC IDs and TSFs available.
219 *
220 * During iteration, all MAC IDs are cleared that are in use by other
221 * virtual interfaces, and all TSF IDs are cleared that can't be used
222 * by this new virtual interface because they're used by an interface
223 * that can't share it with the new one.
224 * At the same time, we check if there's a preferred TSF in the case
225 * that we should share it with another interface.
226 */
227
228 /* MAC ID 0 should be used only for the managed/IBSS vif with non-MLO
229 * FW API
230 */
231 if (!mvm->mld_api_is_used) {
232 switch (vif->type) {
233 case NL80211_IFTYPE_ADHOC:
234 break;
235 case NL80211_IFTYPE_STATION:
236 if (!vif->p2p)
237 break;
238 fallthrough;
239 default:
240 __clear_bit(0, data.available_mac_ids);
241 }
242 }
243
244 ieee80211_iterate_active_interfaces_atomic(
245 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
246 iwl_mvm_mac_iface_iterator, &data);
247
248 /*
249 * In the case we're getting here during resume, it's similar to
250 * firmware restart, and with RESUME_ALL the iterator will find
251 * the vif being added already.
252 * We don't want to reassign any IDs in either case since doing
253 * so would probably assign different IDs (as interfaces aren't
254 * necessarily added in the same order), but the old IDs were
255 * preserved anyway, so skip ID assignment for both resume and
256 * recovery.
257 */
258 if (data.found_vif)
259 return 0;
260
261 /* Therefore, in recovery, we can't get here */
262 if (WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
263 return -EBUSY;
264
265 mvmvif->id = find_first_bit(data.available_mac_ids,
266 NUM_MAC_INDEX_DRIVER);
267 if (mvmvif->id == NUM_MAC_INDEX_DRIVER) {
268 IWL_ERR(mvm, "Failed to init MAC context - no free ID!\n");
269 ret = -EIO;
270 goto exit_fail;
271 }
272
273 if (data.preferred_tsf != NUM_TSF_IDS)
274 mvmvif->tsf_id = data.preferred_tsf;
275 else
276 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids,
277 NUM_TSF_IDS);
278 if (mvmvif->tsf_id == NUM_TSF_IDS) {
279 IWL_ERR(mvm, "Failed to init MAC context - no free TSF!\n");
280 ret = -EIO;
281 goto exit_fail;
282 }
283
284 mvmvif->color = 0;
285
286 INIT_LIST_HEAD(&mvmvif->time_event_data.list);
287 mvmvif->time_event_data.id = TE_MAX;
288
289 /* No need to allocate data queues to P2P Device MAC and NAN.*/
290 if (vif->type == NL80211_IFTYPE_P2P_DEVICE)
291 return 0;
292
293 /* Allocate the CAB queue for softAP and GO interfaces */
294 if (vif->type == NL80211_IFTYPE_AP ||
295 vif->type == NL80211_IFTYPE_ADHOC) {
296 /*
297 * For TVQM this will be overwritten later with the FW assigned
298 * queue value (when queue is enabled).
299 */
300 mvmvif->deflink.cab_queue = IWL_MVM_DQA_GCAST_QUEUE;
301 }
302
303 mvmvif->deflink.bcast_sta.sta_id = IWL_MVM_INVALID_STA;
304 mvmvif->deflink.mcast_sta.sta_id = IWL_MVM_INVALID_STA;
305 mvmvif->deflink.ap_sta_id = IWL_MVM_INVALID_STA;
306
307 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++)
308 mvmvif->deflink.smps_requests[i] = IEEE80211_SMPS_AUTOMATIC;
309
310 return 0;
311
312 exit_fail:
313 memset(mvmvif, 0, sizeof(struct iwl_mvm_vif));
314 return ret;
315 }
316
iwl_mvm_ack_rates(struct iwl_mvm * mvm,struct ieee80211_vif * vif,enum nl80211_band band,u8 * cck_rates,u8 * ofdm_rates)317 static void iwl_mvm_ack_rates(struct iwl_mvm *mvm,
318 struct ieee80211_vif *vif,
319 enum nl80211_band band,
320 u8 *cck_rates, u8 *ofdm_rates)
321 {
322 struct ieee80211_supported_band *sband;
323 unsigned long basic = vif->bss_conf.basic_rates;
324 int lowest_present_ofdm = 100;
325 int lowest_present_cck = 100;
326 u8 cck = 0;
327 u8 ofdm = 0;
328 int i;
329
330 sband = mvm->hw->wiphy->bands[band];
331
332 for_each_set_bit(i, &basic, BITS_PER_LONG) {
333 int hw = sband->bitrates[i].hw_value;
334 if (hw >= IWL_FIRST_OFDM_RATE) {
335 ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE);
336 if (lowest_present_ofdm > hw)
337 lowest_present_ofdm = hw;
338 } else {
339 BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0);
340
341 cck |= BIT(hw);
342 if (lowest_present_cck > hw)
343 lowest_present_cck = hw;
344 }
345 }
346
347 /*
348 * Now we've got the basic rates as bitmaps in the ofdm and cck
349 * variables. This isn't sufficient though, as there might not
350 * be all the right rates in the bitmap. E.g. if the only basic
351 * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps
352 * and 6 Mbps because the 802.11-2007 standard says in 9.6:
353 *
354 * [...] a STA responding to a received frame shall transmit
355 * its Control Response frame [...] at the highest rate in the
356 * BSSBasicRateSet parameter that is less than or equal to the
357 * rate of the immediately previous frame in the frame exchange
358 * sequence ([...]) and that is of the same modulation class
359 * ([...]) as the received frame. If no rate contained in the
360 * BSSBasicRateSet parameter meets these conditions, then the
361 * control frame sent in response to a received frame shall be
362 * transmitted at the highest mandatory rate of the PHY that is
363 * less than or equal to the rate of the received frame, and
364 * that is of the same modulation class as the received frame.
365 *
366 * As a consequence, we need to add all mandatory rates that are
367 * lower than all of the basic rates to these bitmaps.
368 */
369
370 if (IWL_RATE_24M_INDEX < lowest_present_ofdm)
371 ofdm |= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE;
372 if (IWL_RATE_12M_INDEX < lowest_present_ofdm)
373 ofdm |= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE;
374 /* 6M already there or needed so always add */
375 ofdm |= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE;
376
377 /*
378 * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP.
379 * Note, however:
380 * - if no CCK rates are basic, it must be ERP since there must
381 * be some basic rates at all, so they're OFDM => ERP PHY
382 * (or we're in 5 GHz, and the cck bitmap will never be used)
383 * - if 11M is a basic rate, it must be ERP as well, so add 5.5M
384 * - if 5.5M is basic, 1M and 2M are mandatory
385 * - if 2M is basic, 1M is mandatory
386 * - if 1M is basic, that's the only valid ACK rate.
387 * As a consequence, it's not as complicated as it sounds, just add
388 * any lower rates to the ACK rate bitmap.
389 */
390 if (IWL_RATE_11M_INDEX < lowest_present_cck)
391 cck |= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE;
392 if (IWL_RATE_5M_INDEX < lowest_present_cck)
393 cck |= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE;
394 if (IWL_RATE_2M_INDEX < lowest_present_cck)
395 cck |= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE;
396 /* 1M already there or needed so always add */
397 cck |= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE;
398
399 *cck_rates = cck;
400 *ofdm_rates = ofdm;
401 }
402
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)403 void iwl_mvm_set_fw_basic_rates(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
404 struct ieee80211_bss_conf *link_conf,
405 __le32 *cck_rates, __le32 *ofdm_rates)
406 {
407 struct ieee80211_chanctx_conf *chanctx;
408 u8 cck_ack_rates = 0, ofdm_ack_rates = 0;
409
410 rcu_read_lock();
411 chanctx = rcu_dereference(link_conf->chanctx_conf);
412 iwl_mvm_ack_rates(mvm, vif, chanctx ? chanctx->def.chan->band
413 : NL80211_BAND_2GHZ,
414 &cck_ack_rates, &ofdm_ack_rates);
415
416 rcu_read_unlock();
417
418 *cck_rates = cpu_to_le32((u32)cck_ack_rates);
419 *ofdm_rates = cpu_to_le32((u32)ofdm_ack_rates);
420 }
421
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)422 void iwl_mvm_set_fw_protection_flags(struct iwl_mvm *mvm,
423 struct ieee80211_vif *vif,
424 struct ieee80211_bss_conf *link_conf,
425 __le32 *protection_flags, u32 ht_flag,
426 u32 tgg_flag)
427 {
428 /* for both sta and ap, ht_operation_mode hold the protection_mode */
429 u8 protection_mode = link_conf->ht_operation_mode &
430 IEEE80211_HT_OP_MODE_PROTECTION;
431 bool ht_enabled = !!(link_conf->ht_operation_mode &
432 IEEE80211_HT_OP_MODE_PROTECTION);
433
434 if (link_conf->use_cts_prot)
435 *protection_flags |= cpu_to_le32(tgg_flag);
436
437 IWL_DEBUG_RATE(mvm, "use_cts_prot %d, ht_operation_mode %d\n",
438 link_conf->use_cts_prot,
439 link_conf->ht_operation_mode);
440
441 if (!ht_enabled)
442 return;
443
444 IWL_DEBUG_RATE(mvm, "protection mode set to %d\n", protection_mode);
445 /*
446 * See section 9.23.3.1 of IEEE 80211-2012.
447 * Nongreenfield HT STAs Present is not supported.
448 */
449 switch (protection_mode) {
450 case IEEE80211_HT_OP_MODE_PROTECTION_NONE:
451 break;
452 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER:
453 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
454 *protection_flags |= cpu_to_le32(ht_flag);
455 break;
456 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
457 /* Protect when channel wider than 20MHz */
458 if (link_conf->chandef.width > NL80211_CHAN_WIDTH_20)
459 *protection_flags |= cpu_to_le32(ht_flag);
460 break;
461 default:
462 IWL_ERR(mvm, "Illegal protection mode %d\n",
463 protection_mode);
464 break;
465 }
466 }
467
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)468 void iwl_mvm_set_fw_qos_params(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
469 struct ieee80211_bss_conf *link_conf,
470 struct iwl_ac_qos *ac, __le32 *qos_flags)
471 {
472 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
473 struct iwl_mvm_vif_link_info *mvm_link =
474 mvmvif->link[link_conf->link_id];
475 int i;
476
477 if (!mvm_link)
478 return;
479
480 for (i = 0; i < IEEE80211_NUM_ACS; i++) {
481 u8 txf = iwl_mvm_mac_ac_to_tx_fifo(mvm, i);
482 u8 ucode_ac = iwl_mvm_mac80211_ac_to_ucode_ac(i);
483
484 ac[ucode_ac].cw_min =
485 cpu_to_le16(mvm_link->queue_params[i].cw_min);
486 ac[ucode_ac].cw_max =
487 cpu_to_le16(mvm_link->queue_params[i].cw_max);
488 ac[ucode_ac].edca_txop =
489 cpu_to_le16(mvm_link->queue_params[i].txop * 32);
490 ac[ucode_ac].aifsn = mvm_link->queue_params[i].aifs;
491 ac[ucode_ac].fifos_mask = BIT(txf);
492 }
493
494 if (link_conf->qos)
495 *qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA);
496
497 if (link_conf->chandef.width != NL80211_CHAN_WIDTH_20_NOHT)
498 *qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN);
499 }
500
iwl_mvm_get_mac_type(struct ieee80211_vif * vif)501 int iwl_mvm_get_mac_type(struct ieee80211_vif *vif)
502 {
503 u32 mac_type = FW_MAC_TYPE_BSS_STA;
504
505 switch (vif->type) {
506 case NL80211_IFTYPE_STATION:
507 if (vif->p2p)
508 mac_type = FW_MAC_TYPE_P2P_STA;
509 else
510 mac_type = FW_MAC_TYPE_BSS_STA;
511 break;
512 case NL80211_IFTYPE_AP:
513 mac_type = FW_MAC_TYPE_GO;
514 break;
515 case NL80211_IFTYPE_MONITOR:
516 mac_type = FW_MAC_TYPE_LISTENER;
517 break;
518 case NL80211_IFTYPE_P2P_DEVICE:
519 mac_type = FW_MAC_TYPE_P2P_DEVICE;
520 break;
521 case NL80211_IFTYPE_ADHOC:
522 mac_type = FW_MAC_TYPE_IBSS;
523 break;
524 default:
525 WARN_ON_ONCE(1);
526 }
527 return mac_type;
528 }
529
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)530 static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm,
531 struct ieee80211_vif *vif,
532 struct iwl_mac_ctx_cmd *cmd,
533 const u8 *bssid_override,
534 u32 action)
535 {
536 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
537 const u8 *bssid = bssid_override ?: vif->bss_conf.bssid;
538 u32 ht_flag;
539
540 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
541 mvmvif->color));
542 cmd->action = cpu_to_le32(action);
543 cmd->mac_type = cpu_to_le32(iwl_mvm_get_mac_type(vif));
544
545 cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id);
546
547 memcpy(cmd->node_addr, vif->addr, ETH_ALEN);
548
549 if (bssid)
550 memcpy(cmd->bssid_addr, bssid, ETH_ALEN);
551 else
552 eth_broadcast_addr(cmd->bssid_addr);
553
554 iwl_mvm_set_fw_basic_rates(mvm, vif, &vif->bss_conf, &cmd->cck_rates,
555 &cmd->ofdm_rates);
556
557 cmd->cck_short_preamble =
558 cpu_to_le32(vif->bss_conf.use_short_preamble ?
559 MAC_FLG_SHORT_PREAMBLE : 0);
560 cmd->short_slot =
561 cpu_to_le32(vif->bss_conf.use_short_slot ?
562 MAC_FLG_SHORT_SLOT : 0);
563
564 cmd->filter_flags = 0;
565
566 iwl_mvm_set_fw_qos_params(mvm, vif, &vif->bss_conf, cmd->ac,
567 &cmd->qos_flags);
568
569 /* The fw does not distinguish between ht and fat */
570 ht_flag = MAC_PROT_FLG_HT_PROT | MAC_PROT_FLG_FAT_PROT;
571 iwl_mvm_set_fw_protection_flags(mvm, vif, &vif->bss_conf,
572 &cmd->protection_flags,
573 ht_flag, MAC_PROT_FLG_TGG_PROTECT);
574 }
575
iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm * mvm,struct iwl_mac_ctx_cmd * cmd)576 static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm *mvm,
577 struct iwl_mac_ctx_cmd *cmd)
578 {
579 int ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0,
580 sizeof(*cmd), cmd);
581 if (ret)
582 IWL_ERR(mvm, "Failed to send MAC_CONTEXT_CMD (action:%d): %d\n",
583 le32_to_cpu(cmd->action), ret);
584 return ret;
585 }
586
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)587 void iwl_mvm_set_fw_dtim_tbtt(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
588 struct ieee80211_bss_conf *link_conf,
589 __le64 *dtim_tsf, __le32 *dtim_time,
590 __le32 *assoc_beacon_arrive_time)
591 {
592 u32 dtim_offs;
593
594 /*
595 * The DTIM count counts down, so when it is N that means N
596 * more beacon intervals happen until the DTIM TBTT. Therefore
597 * add this to the current time. If that ends up being in the
598 * future, the firmware will handle it.
599 *
600 * Also note that the system_timestamp (which we get here as
601 * "sync_device_ts") and TSF timestamp aren't at exactly the
602 * same offset in the frame -- the TSF is at the first symbol
603 * of the TSF, the system timestamp is at signal acquisition
604 * time. This means there's an offset between them of at most
605 * a few hundred microseconds (24 * 8 bits + PLCP time gives
606 * 384us in the longest case), this is currently not relevant
607 * as the firmware wakes up around 2ms before the TBTT.
608 */
609 dtim_offs = link_conf->sync_dtim_count *
610 link_conf->beacon_int;
611 /* convert TU to usecs */
612 dtim_offs *= 1024;
613
614 *dtim_tsf =
615 cpu_to_le64(link_conf->sync_tsf + dtim_offs);
616 *dtim_time =
617 cpu_to_le32(link_conf->sync_device_ts + dtim_offs);
618 *assoc_beacon_arrive_time =
619 cpu_to_le32(link_conf->sync_device_ts);
620
621 IWL_DEBUG_INFO(mvm, "DTIM TBTT is 0x%llx/0x%x, offset %d\n",
622 le64_to_cpu(*dtim_tsf),
623 le32_to_cpu(*dtim_time),
624 dtim_offs);
625 }
626
iwl_mvm_mac_ctxt_cmd_p2p_sta_get_oppps_ctwin(struct iwl_mvm * mvm,struct ieee80211_vif * vif)627 __le32 iwl_mvm_mac_ctxt_cmd_p2p_sta_get_oppps_ctwin(struct iwl_mvm *mvm,
628 struct ieee80211_vif *vif)
629 {
630 struct ieee80211_p2p_noa_attr *noa =
631 &vif->bss_conf.p2p_noa_attr;
632
633 return cpu_to_le32(noa->oppps_ctwindow &
634 IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
635 }
636
iwl_mvm_mac_ctxt_cmd_sta_get_twt_policy(struct iwl_mvm * mvm,struct ieee80211_vif * vif)637 u32 iwl_mvm_mac_ctxt_cmd_sta_get_twt_policy(struct iwl_mvm *mvm,
638 struct ieee80211_vif *vif)
639 {
640 u32 twt_policy = 0;
641
642 if (vif->bss_conf.twt_requester && IWL_MVM_USE_TWT)
643 twt_policy |= TWT_SUPPORTED;
644 if (vif->bss_conf.twt_protected)
645 twt_policy |= PROTECTED_TWT_SUPPORTED;
646 if (vif->bss_conf.twt_broadcast)
647 twt_policy |= BROADCAST_TWT_SUPPORTED;
648
649 return twt_policy;
650 }
651
iwl_mvm_mac_ctxt_cmd_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u32 action,bool force_assoc_off,const u8 * bssid_override)652 static int iwl_mvm_mac_ctxt_cmd_sta(struct iwl_mvm *mvm,
653 struct ieee80211_vif *vif,
654 u32 action, bool force_assoc_off,
655 const u8 *bssid_override)
656 {
657 struct iwl_mac_ctx_cmd cmd = {};
658 struct iwl_mac_data_sta *ctxt_sta;
659
660 WARN_ON(vif->type != NL80211_IFTYPE_STATION);
661
662 /* Fill the common data for all mac context types */
663 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, bssid_override, action);
664
665 /*
666 * We always want to hear MCAST frames, if we're not authorized yet,
667 * we'll drop them.
668 */
669 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_ACCEPT_GRP);
670
671 if (vif->p2p) {
672 cmd.p2p_sta.ctwin =
673 iwl_mvm_mac_ctxt_cmd_p2p_sta_get_oppps_ctwin(mvm, vif);
674
675 ctxt_sta = &cmd.p2p_sta.sta;
676 } else {
677 ctxt_sta = &cmd.sta;
678 }
679
680 /* We need the dtim_period to set the MAC as associated */
681 if (vif->cfg.assoc && vif->bss_conf.dtim_period &&
682 !force_assoc_off) {
683 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
684
685 iwl_mvm_set_fw_dtim_tbtt(mvm, vif, &vif->bss_conf,
686 &ctxt_sta->dtim_tsf,
687 &ctxt_sta->dtim_time,
688 &ctxt_sta->assoc_beacon_arrive_time);
689
690 ctxt_sta->is_assoc = cpu_to_le32(1);
691
692 if (!mvmvif->authorized &&
693 fw_has_capa(&mvm->fw->ucode_capa,
694 IWL_UCODE_TLV_CAPA_COEX_HIGH_PRIO))
695 ctxt_sta->data_policy |=
696 cpu_to_le32(COEX_HIGH_PRIORITY_ENABLE);
697 } else {
698 ctxt_sta->is_assoc = cpu_to_le32(0);
699
700 /* Allow beacons to pass through as long as we are not
701 * associated, or we do not have dtim period information.
702 */
703 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON);
704 }
705
706 ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int);
707 ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
708 vif->bss_conf.dtim_period);
709
710 ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval);
711 ctxt_sta->assoc_id = cpu_to_le32(vif->cfg.aid);
712
713 if (vif->probe_req_reg && vif->cfg.assoc && vif->p2p)
714 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
715
716 if (vif->bss_conf.he_support && !iwlwifi_mod_params.disable_11ax) {
717 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_11AX);
718 ctxt_sta->data_policy |=
719 cpu_to_le32(iwl_mvm_mac_ctxt_cmd_sta_get_twt_policy(mvm, vif));
720 }
721
722
723 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
724 }
725
iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u32 action)726 static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm,
727 struct ieee80211_vif *vif,
728 u32 action)
729 {
730 struct iwl_mac_ctx_cmd cmd = {};
731 u32 tfd_queue_msk = 0;
732 int ret;
733
734 WARN_ON(vif->type != NL80211_IFTYPE_MONITOR);
735
736 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
737
738 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROMISC |
739 MAC_FILTER_IN_CONTROL_AND_MGMT |
740 MAC_FILTER_IN_BEACON |
741 MAC_FILTER_IN_PROBE_REQUEST |
742 MAC_FILTER_IN_CRC32 |
743 MAC_FILTER_ACCEPT_GRP);
744 ieee80211_hw_set(mvm->hw, RX_INCLUDES_FCS);
745
746 /*
747 * the queue mask is only relevant for old TX API, and
748 * mvm->snif_queue isn't set here (it's still set to
749 * IWL_MVM_INVALID_QUEUE so the BIT() of it is UB)
750 */
751 if (!iwl_mvm_has_new_tx_api(mvm))
752 tfd_queue_msk = BIT(mvm->snif_queue);
753
754 /* Allocate sniffer station */
755 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->snif_sta, tfd_queue_msk,
756 vif->type, IWL_STA_GENERAL_PURPOSE);
757 if (ret)
758 return ret;
759
760 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
761 }
762
iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u32 action)763 static int iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm *mvm,
764 struct ieee80211_vif *vif,
765 u32 action)
766 {
767 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
768 struct iwl_mac_ctx_cmd cmd = {};
769
770 WARN_ON(vif->type != NL80211_IFTYPE_ADHOC);
771
772 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
773
774 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_BEACON |
775 MAC_FILTER_IN_PROBE_REQUEST |
776 MAC_FILTER_ACCEPT_GRP);
777
778 /* cmd.ibss.beacon_time/cmd.ibss.beacon_tsf are curently ignored */
779 cmd.ibss.bi = cpu_to_le32(vif->bss_conf.beacon_int);
780
781 /* TODO: Assumes that the beacon id == mac context id */
782 cmd.ibss.beacon_template = cpu_to_le32(mvmvif->id);
783
784 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
785 }
786
787 struct iwl_mvm_go_iterator_data {
788 bool go_active;
789 };
790
iwl_mvm_go_iterator(void * _data,u8 * mac,struct ieee80211_vif * vif)791 static void iwl_mvm_go_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif)
792 {
793 struct iwl_mvm_go_iterator_data *data = _data;
794 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
795
796 if (vif->type == NL80211_IFTYPE_AP && vif->p2p &&
797 mvmvif->ap_ibss_active)
798 data->go_active = true;
799 }
800
iwl_mac_ctxt_p2p_dev_has_extended_disc(struct iwl_mvm * mvm,struct ieee80211_vif * vif)801 __le32 iwl_mac_ctxt_p2p_dev_has_extended_disc(struct iwl_mvm *mvm,
802 struct ieee80211_vif *vif)
803 {
804 struct iwl_mvm_go_iterator_data data = {};
805
806 /*
807 * This flag should be set to true when the P2P Device is
808 * discoverable and there is at least another active P2P GO. Settings
809 * this flag will allow the P2P Device to be discoverable on other
810 * channels in addition to its listen channel.
811 * Note that this flag should not be set in other cases as it opens the
812 * Rx filters on all MAC and increases the number of interrupts.
813 */
814 ieee80211_iterate_active_interfaces_atomic(
815 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
816 iwl_mvm_go_iterator, &data);
817
818 return cpu_to_le32(data.go_active ? 1 : 0);
819 }
820
iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u32 action)821 static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm,
822 struct ieee80211_vif *vif,
823 u32 action)
824 {
825 struct iwl_mac_ctx_cmd cmd = {};
826
827 WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE);
828
829 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
830
831 cmd.p2p_dev.is_disc_extended =
832 iwl_mac_ctxt_p2p_dev_has_extended_disc(mvm, vif);
833
834 /* Override the filter flags to accept only probe requests */
835 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
836
837 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
838 }
839
iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm * mvm,__le32 * tim_index,__le32 * tim_size,u8 * beacon,u32 frame_size)840 void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm,
841 __le32 *tim_index, __le32 *tim_size,
842 u8 *beacon, u32 frame_size)
843 {
844 u32 tim_idx;
845 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
846
847 /* The index is relative to frame start but we start looking at the
848 * variable-length part of the beacon. */
849 tim_idx = mgmt->u.beacon.variable - beacon;
850
851 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
852 while ((tim_idx < (frame_size - 2)) &&
853 (beacon[tim_idx] != WLAN_EID_TIM))
854 tim_idx += beacon[tim_idx+1] + 2;
855
856 /* If TIM field was found, set variables */
857 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
858 *tim_index = cpu_to_le32(tim_idx);
859 *tim_size = cpu_to_le32((u32)beacon[tim_idx + 1]);
860 } else {
861 IWL_WARN(mvm, "Unable to find TIM Element in beacon\n");
862 }
863 }
864
iwl_mvm_find_ie_offset(u8 * beacon,u8 eid,u32 frame_size)865 static u32 iwl_mvm_find_ie_offset(u8 *beacon, u8 eid, u32 frame_size)
866 {
867 struct ieee80211_mgmt *mgmt = (void *)beacon;
868 const u8 *ie;
869
870 if (WARN_ON_ONCE(frame_size <= (mgmt->u.beacon.variable - beacon)))
871 return 0;
872
873 frame_size -= mgmt->u.beacon.variable - beacon;
874
875 ie = cfg80211_find_ie(eid, mgmt->u.beacon.variable, frame_size);
876 if (!ie)
877 return 0;
878
879 return ie - beacon;
880 }
881
iwl_mvm_mac_ctxt_get_lowest_rate(struct iwl_mvm * mvm,struct ieee80211_tx_info * info,struct ieee80211_vif * vif)882 u8 iwl_mvm_mac_ctxt_get_lowest_rate(struct iwl_mvm *mvm,
883 struct ieee80211_tx_info *info,
884 struct ieee80211_vif *vif)
885 {
886 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
887 struct ieee80211_supported_band *sband;
888 unsigned long basic = vif->bss_conf.basic_rates;
889 u16 lowest_cck = IWL_RATE_COUNT, lowest_ofdm = IWL_RATE_COUNT;
890 u32 link_id = u32_get_bits(info->control.flags,
891 IEEE80211_TX_CTRL_MLO_LINK);
892 u8 band = info->band;
893 u8 rate;
894 u32 i;
895
896 if (link_id == IEEE80211_LINK_UNSPECIFIED && ieee80211_vif_is_mld(vif)) {
897 for (i = 0; i < ARRAY_SIZE(mvmvif->link); i++) {
898 if (!mvmvif->link[i])
899 continue;
900 /* shouldn't do this when >1 link is active */
901 WARN_ON_ONCE(link_id != IEEE80211_LINK_UNSPECIFIED);
902 link_id = i;
903 }
904 }
905
906 if (link_id < IEEE80211_LINK_UNSPECIFIED) {
907 struct ieee80211_bss_conf *link_conf;
908
909 rcu_read_lock();
910 link_conf = rcu_dereference(vif->link_conf[link_id]);
911 if (link_conf) {
912 basic = link_conf->basic_rates;
913 if (link_conf->chandef.chan)
914 band = link_conf->chandef.chan->band;
915 }
916 rcu_read_unlock();
917 }
918
919 sband = mvm->hw->wiphy->bands[band];
920 for_each_set_bit(i, &basic, BITS_PER_LONG) {
921 u16 hw = sband->bitrates[i].hw_value;
922
923 if (hw >= IWL_FIRST_OFDM_RATE) {
924 if (lowest_ofdm > hw)
925 lowest_ofdm = hw;
926 } else if (lowest_cck > hw) {
927 lowest_cck = hw;
928 }
929 }
930
931 if (band == NL80211_BAND_2GHZ && !vif->p2p &&
932 vif->type != NL80211_IFTYPE_P2P_DEVICE &&
933 !(info->flags & IEEE80211_TX_CTL_NO_CCK_RATE)) {
934 if (lowest_cck != IWL_RATE_COUNT)
935 rate = lowest_cck;
936 else if (lowest_ofdm != IWL_RATE_COUNT)
937 rate = lowest_ofdm;
938 else
939 rate = IWL_RATE_1M_INDEX;
940 } else if (lowest_ofdm != IWL_RATE_COUNT) {
941 rate = lowest_ofdm;
942 } else {
943 rate = IWL_RATE_6M_INDEX;
944 }
945
946 return rate;
947 }
948
iwl_mvm_mac_ctxt_get_beacon_flags(const struct iwl_fw * fw,u8 rate_idx)949 u16 iwl_mvm_mac_ctxt_get_beacon_flags(const struct iwl_fw *fw, u8 rate_idx)
950 {
951 u16 flags = iwl_mvm_mac80211_idx_to_hwrate(fw, rate_idx);
952 bool is_new_rate = iwl_fw_lookup_cmd_ver(fw, BEACON_TEMPLATE_CMD, 0) > 10;
953
954 if (rate_idx <= IWL_FIRST_CCK_RATE)
955 flags |= is_new_rate ? IWL_MAC_BEACON_CCK
956 : IWL_MAC_BEACON_CCK_V1;
957
958 return flags;
959 }
960
iwl_mvm_mac_ctxt_get_beacon_rate(struct iwl_mvm * mvm,struct ieee80211_tx_info * info,struct ieee80211_vif * vif)961 u8 iwl_mvm_mac_ctxt_get_beacon_rate(struct iwl_mvm *mvm,
962 struct ieee80211_tx_info *info,
963 struct ieee80211_vif *vif)
964 {
965 struct ieee80211_supported_band *sband =
966 mvm->hw->wiphy->bands[info->band];
967 u32 legacy = vif->bss_conf.beacon_tx_rate.control[info->band].legacy;
968
969 /* if beacon rate was configured try using it */
970 if (hweight32(legacy) == 1) {
971 u32 rate = ffs(legacy) - 1;
972
973 return sband->bitrates[rate].hw_value;
974 }
975
976 return iwl_mvm_mac_ctxt_get_lowest_rate(mvm, info, vif);
977 }
978
iwl_mvm_mac_ctxt_set_tx(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct sk_buff * beacon,struct iwl_tx_cmd * tx)979 static void iwl_mvm_mac_ctxt_set_tx(struct iwl_mvm *mvm,
980 struct ieee80211_vif *vif,
981 struct sk_buff *beacon,
982 struct iwl_tx_cmd *tx)
983 {
984 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
985 struct ieee80211_tx_info *info;
986 u8 rate;
987 u32 tx_flags;
988
989 info = IEEE80211_SKB_CB(beacon);
990
991 /* Set up TX command fields */
992 tx->len = cpu_to_le16((u16)beacon->len);
993 tx->sta_id = mvmvif->deflink.bcast_sta.sta_id;
994 tx->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
995 tx_flags = TX_CMD_FLG_SEQ_CTL | TX_CMD_FLG_TSF;
996 tx_flags |=
997 iwl_mvm_bt_coex_tx_prio(mvm, (void *)beacon->data, info, 0) <<
998 TX_CMD_FLG_BT_PRIO_POS;
999 tx->tx_flags = cpu_to_le32(tx_flags);
1000
1001 if (!fw_has_capa(&mvm->fw->ucode_capa,
1002 IWL_UCODE_TLV_CAPA_BEACON_ANT_SELECTION))
1003 iwl_mvm_toggle_tx_ant(mvm, &mvm->mgmt_last_antenna_idx);
1004
1005 tx->rate_n_flags =
1006 cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) <<
1007 RATE_MCS_ANT_POS);
1008
1009 rate = iwl_mvm_mac_ctxt_get_beacon_rate(mvm, info, vif);
1010
1011 tx->rate_n_flags |=
1012 cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(mvm->fw, rate));
1013 if (rate == IWL_FIRST_CCK_RATE)
1014 tx->rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK_V1);
1015
1016 }
1017
iwl_mvm_mac_ctxt_send_beacon_cmd(struct iwl_mvm * mvm,struct sk_buff * beacon,void * data,int len)1018 int iwl_mvm_mac_ctxt_send_beacon_cmd(struct iwl_mvm *mvm,
1019 struct sk_buff *beacon,
1020 void *data, int len)
1021 {
1022 struct iwl_host_cmd cmd = {
1023 .id = BEACON_TEMPLATE_CMD,
1024 .flags = CMD_ASYNC,
1025 };
1026
1027 cmd.len[0] = len;
1028 cmd.data[0] = data;
1029 cmd.dataflags[0] = 0;
1030 cmd.len[1] = beacon->len;
1031 cmd.data[1] = beacon->data;
1032 cmd.dataflags[1] = IWL_HCMD_DFL_DUP;
1033
1034 return iwl_mvm_send_cmd(mvm, &cmd);
1035 }
1036
iwl_mvm_mac_ctxt_send_beacon_v6(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct sk_buff * beacon)1037 static int iwl_mvm_mac_ctxt_send_beacon_v6(struct iwl_mvm *mvm,
1038 struct ieee80211_vif *vif,
1039 struct sk_buff *beacon)
1040 {
1041 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1042 struct iwl_mac_beacon_cmd_v6 beacon_cmd = {};
1043
1044 iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx);
1045
1046 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
1047
1048 if (vif->type == NL80211_IFTYPE_AP)
1049 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
1050 &beacon_cmd.tim_size,
1051 beacon->data, beacon->len);
1052
1053 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
1054 sizeof(beacon_cmd));
1055 }
1056
iwl_mvm_mac_ctxt_send_beacon_v7(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct sk_buff * beacon)1057 static int iwl_mvm_mac_ctxt_send_beacon_v7(struct iwl_mvm *mvm,
1058 struct ieee80211_vif *vif,
1059 struct sk_buff *beacon)
1060 {
1061 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1062 struct iwl_mac_beacon_cmd_v7 beacon_cmd = {};
1063
1064 iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx);
1065
1066 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
1067
1068 if (vif->type == NL80211_IFTYPE_AP)
1069 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
1070 &beacon_cmd.tim_size,
1071 beacon->data, beacon->len);
1072
1073 beacon_cmd.csa_offset =
1074 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
1075 WLAN_EID_CHANNEL_SWITCH,
1076 beacon->len));
1077 beacon_cmd.ecsa_offset =
1078 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
1079 WLAN_EID_EXT_CHANSWITCH_ANN,
1080 beacon->len));
1081
1082 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
1083 sizeof(beacon_cmd));
1084 }
1085
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)1086 static int iwl_mvm_mac_ctxt_send_beacon_v9(struct iwl_mvm *mvm,
1087 struct ieee80211_vif *vif,
1088 struct sk_buff *beacon,
1089 struct ieee80211_bss_conf *link_conf)
1090 {
1091 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1092 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(beacon);
1093 struct iwl_mac_beacon_cmd beacon_cmd = {};
1094 u8 rate = iwl_mvm_mac_ctxt_get_beacon_rate(mvm, info, vif);
1095 u16 flags;
1096 struct ieee80211_chanctx_conf *ctx;
1097 int channel;
1098 flags = iwl_mvm_mac_ctxt_get_beacon_flags(mvm->fw, rate);
1099
1100 /* Enable FILS on PSC channels only */
1101 rcu_read_lock();
1102 ctx = rcu_dereference(link_conf->chanctx_conf);
1103 channel = ieee80211_frequency_to_channel(ctx->def.chan->center_freq);
1104 WARN_ON(channel == 0);
1105 if (cfg80211_channel_is_psc(ctx->def.chan) &&
1106 !IWL_MVM_DISABLE_AP_FILS) {
1107 flags |= iwl_fw_lookup_cmd_ver(mvm->fw, BEACON_TEMPLATE_CMD,
1108 0) > 10 ?
1109 IWL_MAC_BEACON_FILS :
1110 IWL_MAC_BEACON_FILS_V1;
1111 beacon_cmd.short_ssid =
1112 cpu_to_le32(~crc32_le(~0, vif->cfg.ssid,
1113 vif->cfg.ssid_len));
1114 }
1115 rcu_read_unlock();
1116
1117 beacon_cmd.flags = cpu_to_le16(flags);
1118 beacon_cmd.byte_cnt = cpu_to_le16((u16)beacon->len);
1119
1120 if (WARN_ON(!mvmvif->link[link_conf->link_id]))
1121 return -EINVAL;
1122
1123 if (iwl_fw_lookup_cmd_ver(mvm->fw, BEACON_TEMPLATE_CMD, 0) > 12)
1124 beacon_cmd.link_id =
1125 cpu_to_le32(mvmvif->link[link_conf->link_id]->fw_link_id);
1126 else
1127 beacon_cmd.link_id = cpu_to_le32((u32)mvmvif->id);
1128
1129 if (vif->type == NL80211_IFTYPE_AP)
1130 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
1131 &beacon_cmd.tim_size,
1132 beacon->data, beacon->len);
1133
1134 beacon_cmd.csa_offset =
1135 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
1136 WLAN_EID_CHANNEL_SWITCH,
1137 beacon->len));
1138 beacon_cmd.ecsa_offset =
1139 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
1140 WLAN_EID_EXT_CHANSWITCH_ANN,
1141 beacon->len));
1142
1143 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
1144 sizeof(beacon_cmd));
1145 }
1146
iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct sk_buff * beacon,struct ieee80211_bss_conf * link_conf)1147 static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm,
1148 struct ieee80211_vif *vif,
1149 struct sk_buff *beacon,
1150 struct ieee80211_bss_conf *link_conf)
1151 {
1152 if (WARN_ON(!beacon))
1153 return -EINVAL;
1154
1155 if (IWL_MVM_NON_TRANSMITTING_AP)
1156 return 0;
1157
1158 if (!fw_has_capa(&mvm->fw->ucode_capa,
1159 IWL_UCODE_TLV_CAPA_CSA_AND_TBTT_OFFLOAD))
1160 return iwl_mvm_mac_ctxt_send_beacon_v6(mvm, vif, beacon);
1161
1162 if (fw_has_api(&mvm->fw->ucode_capa,
1163 IWL_UCODE_TLV_API_NEW_BEACON_TEMPLATE))
1164 return iwl_mvm_mac_ctxt_send_beacon_v9(mvm, vif, beacon,
1165 link_conf);
1166
1167 return iwl_mvm_mac_ctxt_send_beacon_v7(mvm, vif, beacon);
1168 }
1169
1170 /* 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)1171 int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm,
1172 struct ieee80211_vif *vif,
1173 struct ieee80211_bss_conf *link_conf)
1174 {
1175 struct sk_buff *beacon;
1176 int ret;
1177
1178 WARN_ON(vif->type != NL80211_IFTYPE_AP &&
1179 vif->type != NL80211_IFTYPE_ADHOC);
1180
1181 beacon = ieee80211_beacon_get_template(mvm->hw, vif, NULL,
1182 link_conf->link_id);
1183 if (!beacon)
1184 return -ENOMEM;
1185
1186 #ifdef CONFIG_IWLWIFI_DEBUGFS
1187 if (mvm->beacon_inject_active) {
1188 dev_kfree_skb(beacon);
1189 return -EBUSY;
1190 }
1191 #endif
1192
1193 ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon, link_conf);
1194 dev_kfree_skb(beacon);
1195 return ret;
1196 }
1197
1198 struct iwl_mvm_mac_ap_iterator_data {
1199 struct iwl_mvm *mvm;
1200 struct ieee80211_vif *vif;
1201 u32 beacon_device_ts;
1202 u16 beacon_int;
1203 };
1204
1205 /* 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)1206 static void iwl_mvm_mac_ap_iterator(void *_data, u8 *mac,
1207 struct ieee80211_vif *vif)
1208 {
1209 struct iwl_mvm_mac_ap_iterator_data *data = _data;
1210
1211 if (vif->type != NL80211_IFTYPE_STATION || !vif->cfg.assoc)
1212 return;
1213
1214 /* Station client has higher priority over P2P client*/
1215 if (vif->p2p && data->beacon_device_ts)
1216 return;
1217
1218 data->beacon_device_ts = vif->bss_conf.sync_device_ts;
1219 data->beacon_int = vif->bss_conf.beacon_int;
1220 }
1221
1222 /*
1223 * Fill the filter flags for mac context of type AP or P2P GO.
1224 */
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)1225 void iwl_mvm_mac_ctxt_cmd_ap_set_filter_flags(struct iwl_mvm *mvm,
1226 struct iwl_mvm_vif *mvmvif,
1227 __le32 *filter_flags,
1228 int accept_probe_req_flag,
1229 int accept_beacon_flag)
1230 {
1231 /*
1232 * in AP mode, pass probe requests and beacons from other APs
1233 * (needed for ht protection); when there're no any associated
1234 * station don't ask FW to pass beacons to prevent unnecessary
1235 * wake-ups.
1236 */
1237 *filter_flags |= cpu_to_le32(accept_probe_req_flag);
1238 if (mvmvif->ap_assoc_sta_count || !mvm->drop_bcn_ap_mode) {
1239 *filter_flags |= cpu_to_le32(accept_beacon_flag);
1240 IWL_DEBUG_HC(mvm, "Asking FW to pass beacons\n");
1241 } else {
1242 IWL_DEBUG_HC(mvm, "No need to receive beacons\n");
1243 }
1244 }
1245
1246 /*
1247 * Fill the specific data for mac context of type AP of P2P GO
1248 */
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)1249 static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm,
1250 struct ieee80211_vif *vif,
1251 struct iwl_mac_ctx_cmd *cmd,
1252 struct iwl_mac_data_ap *ctxt_ap,
1253 bool add)
1254 {
1255 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1256 struct iwl_mvm_mac_ap_iterator_data data = {
1257 .mvm = mvm,
1258 .vif = vif,
1259 .beacon_device_ts = 0
1260 };
1261
1262 /* in AP mode, the MCAST FIFO takes the EDCA params from VO */
1263 cmd->ac[IWL_MVM_TX_FIFO_VO].fifos_mask |= BIT(IWL_MVM_TX_FIFO_MCAST);
1264
1265 iwl_mvm_mac_ctxt_cmd_ap_set_filter_flags(mvm, mvmvif,
1266 &cmd->filter_flags,
1267 MAC_FILTER_IN_PROBE_REQUEST,
1268 MAC_FILTER_IN_BEACON);
1269
1270 ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int);
1271 ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
1272 vif->bss_conf.dtim_period);
1273
1274 if (!fw_has_api(&mvm->fw->ucode_capa,
1275 IWL_UCODE_TLV_API_STA_TYPE))
1276 ctxt_ap->mcast_qid = cpu_to_le32(mvmvif->deflink.cab_queue);
1277
1278 /*
1279 * Only set the beacon time when the MAC is being added, when we
1280 * just modify the MAC then we should keep the time -- the firmware
1281 * can otherwise have a "jumping" TBTT.
1282 */
1283 if (add) {
1284 /*
1285 * If there is a station/P2P client interface which is
1286 * associated, set the AP's TBTT far enough from the station's
1287 * TBTT. Otherwise, set it to the current system time
1288 */
1289 ieee80211_iterate_active_interfaces_atomic(
1290 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
1291 iwl_mvm_mac_ap_iterator, &data);
1292
1293 if (data.beacon_device_ts) {
1294 u32 rand = get_random_u32_inclusive(36, 63);
1295 mvmvif->ap_beacon_time = data.beacon_device_ts +
1296 ieee80211_tu_to_usec(data.beacon_int * rand /
1297 100);
1298 } else {
1299 mvmvif->ap_beacon_time = iwl_mvm_get_systime(mvm);
1300 }
1301 }
1302
1303 ctxt_ap->beacon_time = cpu_to_le32(mvmvif->ap_beacon_time);
1304 ctxt_ap->beacon_tsf = 0; /* unused */
1305
1306 /* TODO: Assume that the beacon id == mac context id */
1307 ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id);
1308 }
1309
iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u32 action)1310 static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm,
1311 struct ieee80211_vif *vif,
1312 u32 action)
1313 {
1314 struct iwl_mac_ctx_cmd cmd = {};
1315
1316 WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p);
1317
1318 /* Fill the common data for all mac context types */
1319 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
1320
1321 /* Fill the data specific for ap mode */
1322 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.ap,
1323 action == FW_CTXT_ACTION_ADD);
1324
1325 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
1326 }
1327
iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u32 action)1328 static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm,
1329 struct ieee80211_vif *vif,
1330 u32 action)
1331 {
1332 struct iwl_mac_ctx_cmd cmd = {};
1333 struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr;
1334
1335 WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p);
1336
1337 /* Fill the common data for all mac context types */
1338 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
1339
1340 /* Fill the data specific for GO mode */
1341 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.go.ap,
1342 action == FW_CTXT_ACTION_ADD);
1343
1344 cmd.go.ctwin = cpu_to_le32(noa->oppps_ctwindow &
1345 IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
1346 cmd.go.opp_ps_enabled =
1347 cpu_to_le32(!!(noa->oppps_ctwindow &
1348 IEEE80211_P2P_OPPPS_ENABLE_BIT));
1349
1350 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
1351 }
1352
iwl_mvm_mac_ctx_send(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u32 action,bool force_assoc_off,const u8 * bssid_override)1353 static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1354 u32 action, bool force_assoc_off,
1355 const u8 *bssid_override)
1356 {
1357 switch (vif->type) {
1358 case NL80211_IFTYPE_STATION:
1359 return iwl_mvm_mac_ctxt_cmd_sta(mvm, vif, action,
1360 force_assoc_off,
1361 bssid_override);
1362 case NL80211_IFTYPE_AP:
1363 if (!vif->p2p)
1364 return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action);
1365 else
1366 return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action);
1367 case NL80211_IFTYPE_MONITOR:
1368 return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action);
1369 case NL80211_IFTYPE_P2P_DEVICE:
1370 return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action);
1371 case NL80211_IFTYPE_ADHOC:
1372 return iwl_mvm_mac_ctxt_cmd_ibss(mvm, vif, action);
1373 default:
1374 break;
1375 }
1376
1377 return -EOPNOTSUPP;
1378 }
1379
iwl_mvm_mac_ctxt_add(struct iwl_mvm * mvm,struct ieee80211_vif * vif)1380 int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1381 {
1382 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1383 int ret;
1384
1385 if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n",
1386 vif->addr, ieee80211_vif_type_p2p(vif)))
1387 return -EIO;
1388
1389 ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD,
1390 true, NULL);
1391 if (ret)
1392 return ret;
1393
1394 /* will only do anything at resume from D3 time */
1395 iwl_mvm_set_last_nonqos_seq(mvm, vif);
1396
1397 mvmvif->uploaded = true;
1398 return 0;
1399 }
1400
iwl_mvm_mac_ctxt_changed(struct iwl_mvm * mvm,struct ieee80211_vif * vif,bool force_assoc_off,const u8 * bssid_override)1401 int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1402 bool force_assoc_off, const u8 *bssid_override)
1403 {
1404 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1405
1406 if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n",
1407 vif->addr, ieee80211_vif_type_p2p(vif)))
1408 return -EIO;
1409
1410 return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY,
1411 force_assoc_off, bssid_override);
1412 }
1413
iwl_mvm_mac_ctxt_remove(struct iwl_mvm * mvm,struct ieee80211_vif * vif)1414 int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1415 {
1416 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1417 struct iwl_mac_ctx_cmd cmd;
1418 int ret;
1419
1420 if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n",
1421 vif->addr, ieee80211_vif_type_p2p(vif)))
1422 return -EIO;
1423
1424 memset(&cmd, 0, sizeof(cmd));
1425
1426 cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
1427 mvmvif->color));
1428 cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE);
1429
1430 ret = iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
1431 if (ret)
1432 return ret;
1433
1434 mvmvif->uploaded = false;
1435
1436 if (vif->type == NL80211_IFTYPE_MONITOR) {
1437 __clear_bit(IEEE80211_HW_RX_INCLUDES_FCS, mvm->hw->flags);
1438 iwl_mvm_dealloc_snif_sta(mvm);
1439 }
1440
1441 return 0;
1442 }
1443
iwl_mvm_csa_count_down(struct iwl_mvm * mvm,struct ieee80211_vif * csa_vif,u32 gp2,bool tx_success)1444 static void iwl_mvm_csa_count_down(struct iwl_mvm *mvm,
1445 struct ieee80211_vif *csa_vif, u32 gp2,
1446 bool tx_success)
1447 {
1448 struct iwl_mvm_vif *mvmvif =
1449 iwl_mvm_vif_from_mac80211(csa_vif);
1450
1451 /* Don't start to countdown from a failed beacon */
1452 if (!tx_success && !mvmvif->csa_countdown)
1453 return;
1454
1455 mvmvif->csa_countdown = true;
1456
1457 if (!ieee80211_beacon_cntdwn_is_complete(csa_vif)) {
1458 int c = ieee80211_beacon_update_cntdwn(csa_vif);
1459
1460 iwl_mvm_mac_ctxt_beacon_changed(mvm, csa_vif,
1461 &csa_vif->bss_conf);
1462 if (csa_vif->p2p &&
1463 !iwl_mvm_te_scheduled(&mvmvif->time_event_data) && gp2 &&
1464 tx_success) {
1465 u32 rel_time = (c + 1) *
1466 csa_vif->bss_conf.beacon_int -
1467 IWL_MVM_CHANNEL_SWITCH_TIME_GO;
1468 u32 apply_time = gp2 + rel_time * 1024;
1469
1470 iwl_mvm_schedule_csa_period(mvm, csa_vif,
1471 IWL_MVM_CHANNEL_SWITCH_TIME_GO -
1472 IWL_MVM_CHANNEL_SWITCH_MARGIN,
1473 apply_time);
1474 }
1475 } else if (!iwl_mvm_te_scheduled(&mvmvif->time_event_data)) {
1476 /* we don't have CSA NoA scheduled yet, switch now */
1477 ieee80211_csa_finish(csa_vif);
1478 RCU_INIT_POINTER(mvm->csa_vif, NULL);
1479 }
1480 }
1481
iwl_mvm_rx_beacon_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1482 void iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm,
1483 struct iwl_rx_cmd_buffer *rxb)
1484 {
1485 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1486 unsigned int pkt_len = iwl_rx_packet_payload_len(pkt);
1487 struct iwl_extended_beacon_notif *beacon = (void *)pkt->data;
1488 struct iwl_extended_beacon_notif_v5 *beacon_v5 = (void *)pkt->data;
1489 struct ieee80211_vif *csa_vif;
1490 struct ieee80211_vif *tx_blocked_vif;
1491 struct agg_tx_status *agg_status;
1492 u16 status;
1493
1494 lockdep_assert_held(&mvm->mutex);
1495
1496 mvm->ap_last_beacon_gp2 = le32_to_cpu(beacon->gp2);
1497
1498 if (!iwl_mvm_is_short_beacon_notif_supported(mvm)) {
1499 struct iwl_mvm_tx_resp *beacon_notify_hdr =
1500 &beacon_v5->beacon_notify_hdr;
1501
1502 if (unlikely(pkt_len < sizeof(*beacon_v5)))
1503 return;
1504
1505 mvm->ibss_manager = beacon_v5->ibss_mgr_status != 0;
1506 agg_status = iwl_mvm_get_agg_status(mvm, beacon_notify_hdr);
1507 status = le16_to_cpu(agg_status->status) & TX_STATUS_MSK;
1508 IWL_DEBUG_RX(mvm,
1509 "beacon status %#x retries:%d tsf:0x%016llX gp2:0x%X rate:%d\n",
1510 status, beacon_notify_hdr->failure_frame,
1511 le64_to_cpu(beacon->tsf),
1512 mvm->ap_last_beacon_gp2,
1513 le32_to_cpu(beacon_notify_hdr->initial_rate));
1514 } else {
1515 if (unlikely(pkt_len < sizeof(*beacon)))
1516 return;
1517
1518 mvm->ibss_manager = beacon->ibss_mgr_status != 0;
1519 status = le32_to_cpu(beacon->status) & TX_STATUS_MSK;
1520 IWL_DEBUG_RX(mvm,
1521 "beacon status %#x tsf:0x%016llX gp2:0x%X\n",
1522 status, le64_to_cpu(beacon->tsf),
1523 mvm->ap_last_beacon_gp2);
1524 }
1525
1526 csa_vif = rcu_dereference_protected(mvm->csa_vif,
1527 lockdep_is_held(&mvm->mutex));
1528 if (unlikely(csa_vif && csa_vif->bss_conf.csa_active))
1529 iwl_mvm_csa_count_down(mvm, csa_vif, mvm->ap_last_beacon_gp2,
1530 (status == TX_STATUS_SUCCESS));
1531
1532 tx_blocked_vif = rcu_dereference_protected(mvm->csa_tx_blocked_vif,
1533 lockdep_is_held(&mvm->mutex));
1534 if (unlikely(tx_blocked_vif)) {
1535 struct iwl_mvm_vif *mvmvif =
1536 iwl_mvm_vif_from_mac80211(tx_blocked_vif);
1537
1538 /*
1539 * The channel switch is started and we have blocked the
1540 * stations. If this is the first beacon (the timeout wasn't
1541 * set), set the unblock timeout, otherwise countdown
1542 */
1543 if (!mvm->csa_tx_block_bcn_timeout)
1544 mvm->csa_tx_block_bcn_timeout =
1545 IWL_MVM_CS_UNBLOCK_TX_TIMEOUT;
1546 else
1547 mvm->csa_tx_block_bcn_timeout--;
1548
1549 /* Check if the timeout is expired, and unblock tx */
1550 if (mvm->csa_tx_block_bcn_timeout == 0) {
1551 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
1552 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
1553 }
1554 }
1555 }
1556
iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1557 void iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm *mvm,
1558 struct iwl_rx_cmd_buffer *rxb)
1559 {
1560 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1561 struct iwl_missed_beacons_notif *mb = (void *)pkt->data;
1562 struct iwl_fw_dbg_trigger_missed_bcon *bcon_trig;
1563 struct iwl_fw_dbg_trigger_tlv *trigger;
1564 u32 stop_trig_missed_bcon, stop_trig_missed_bcon_since_rx;
1565 u32 rx_missed_bcon, rx_missed_bcon_since_rx;
1566 struct ieee80211_vif *vif;
1567 /* Id can be mac/link id depending on the notification version */
1568 u32 id = le32_to_cpu(mb->link_id);
1569 union iwl_dbg_tlv_tp_data tp_data = { .fw_pkt = pkt };
1570 u32 mac_type;
1571 u8 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
1572 MISSED_BEACONS_NOTIFICATION,
1573 0);
1574
1575 rcu_read_lock();
1576
1577 /* before version four the ID in the notification refers to mac ID */
1578 if (notif_ver < 4) {
1579 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true);
1580 } else {
1581 struct ieee80211_bss_conf *bss_conf =
1582 iwl_mvm_rcu_fw_link_id_to_link_conf(mvm, id, true);
1583
1584 if (!bss_conf)
1585 goto out;
1586
1587 vif = bss_conf->vif;
1588 }
1589
1590 IWL_DEBUG_INFO(mvm,
1591 "missed bcn %s_id=%u, consecutive=%u (%u, %u, %u)\n",
1592 notif_ver < 4 ? "mac" : "link",
1593 id,
1594 le32_to_cpu(mb->consec_missed_beacons),
1595 le32_to_cpu(mb->consec_missed_beacons_since_last_rx),
1596 le32_to_cpu(mb->num_recvd_beacons),
1597 le32_to_cpu(mb->num_expected_beacons));
1598
1599 if (!vif)
1600 goto out;
1601
1602 mac_type = iwl_mvm_get_mac_type(vif);
1603
1604 IWL_DEBUG_INFO(mvm, "missed beacon mac_type=%u,\n", mac_type);
1605
1606 mvm->trans->dbg.dump_file_name_ext_valid = true;
1607 snprintf(mvm->trans->dbg.dump_file_name_ext, IWL_FW_INI_MAX_NAME,
1608 "MacId_%d_MacType_%d", id, mac_type);
1609
1610 rx_missed_bcon = le32_to_cpu(mb->consec_missed_beacons);
1611 rx_missed_bcon_since_rx =
1612 le32_to_cpu(mb->consec_missed_beacons_since_last_rx);
1613 /*
1614 * TODO: the threshold should be adjusted based on latency conditions,
1615 * and/or in case of a CS flow on one of the other AP vifs.
1616 */
1617 if (rx_missed_bcon > IWL_MVM_MISSED_BEACONS_THRESHOLD_LONG)
1618 iwl_mvm_connection_loss(mvm, vif, "missed beacons");
1619 else if (rx_missed_bcon_since_rx > IWL_MVM_MISSED_BEACONS_THRESHOLD)
1620 ieee80211_beacon_loss(vif);
1621
1622 iwl_dbg_tlv_time_point(&mvm->fwrt,
1623 IWL_FW_INI_TIME_POINT_MISSED_BEACONS, &tp_data);
1624
1625 trigger = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
1626 FW_DBG_TRIGGER_MISSED_BEACONS);
1627 if (!trigger)
1628 goto out;
1629
1630 bcon_trig = (void *)trigger->data;
1631 stop_trig_missed_bcon = le32_to_cpu(bcon_trig->stop_consec_missed_bcon);
1632 stop_trig_missed_bcon_since_rx =
1633 le32_to_cpu(bcon_trig->stop_consec_missed_bcon_since_rx);
1634
1635 /* TODO: implement start trigger */
1636
1637 if (rx_missed_bcon_since_rx >= stop_trig_missed_bcon_since_rx ||
1638 rx_missed_bcon >= stop_trig_missed_bcon)
1639 #if defined(__linux__)
1640 iwl_fw_dbg_collect_trig(&mvm->fwrt, trigger, NULL);
1641 #elif defined(__FreeBSD__)
1642 iwl_fw_dbg_collect_trig(&mvm->fwrt, trigger, "");
1643 #endif
1644
1645 out:
1646 rcu_read_unlock();
1647 }
1648
iwl_mvm_rx_stored_beacon_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1649 void iwl_mvm_rx_stored_beacon_notif(struct iwl_mvm *mvm,
1650 struct iwl_rx_cmd_buffer *rxb)
1651 {
1652 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1653 unsigned int pkt_len = iwl_rx_packet_payload_len(pkt);
1654 struct iwl_stored_beacon_notif_common *sb = (void *)pkt->data;
1655 struct ieee80211_rx_status rx_status;
1656 struct sk_buff *skb;
1657 u8 *data;
1658 u32 size = le32_to_cpu(sb->byte_count);
1659 int ver = iwl_fw_lookup_cmd_ver(mvm->fw,
1660 WIDE_ID(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF),
1661 0);
1662
1663 if (size == 0)
1664 return;
1665
1666 /* handle per-version differences */
1667 if (ver <= 2) {
1668 struct iwl_stored_beacon_notif_v2 *sb_v2 = (void *)pkt->data;
1669
1670 if (pkt_len < struct_size(sb_v2, data, size))
1671 return;
1672
1673 data = sb_v2->data;
1674 } else {
1675 struct iwl_stored_beacon_notif_v3 *sb_v3 = (void *)pkt->data;
1676
1677 if (pkt_len < struct_size(sb_v3, data, size))
1678 return;
1679
1680 data = sb_v3->data;
1681 }
1682
1683 skb = alloc_skb(size, GFP_ATOMIC);
1684 if (!skb) {
1685 IWL_ERR(mvm, "alloc_skb failed\n");
1686 return;
1687 }
1688
1689 /* update rx_status according to the notification's metadata */
1690 memset(&rx_status, 0, sizeof(rx_status));
1691 rx_status.mactime = le64_to_cpu(sb->tsf);
1692 /* TSF as indicated by the firmware is at INA time */
1693 rx_status.flag |= RX_FLAG_MACTIME_PLCP_START;
1694 rx_status.device_timestamp = le32_to_cpu(sb->system_time);
1695 rx_status.band =
1696 (sb->band & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ?
1697 NL80211_BAND_2GHZ : NL80211_BAND_5GHZ;
1698 rx_status.freq =
1699 ieee80211_channel_to_frequency(le16_to_cpu(sb->channel),
1700 rx_status.band);
1701
1702 /* copy the data */
1703 skb_put_data(skb, data, size);
1704 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
1705
1706 /* pass it as regular rx to mac80211 */
1707 ieee80211_rx_napi(mvm->hw, NULL, skb, NULL);
1708 }
1709
iwl_mvm_probe_resp_data_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1710 void iwl_mvm_probe_resp_data_notif(struct iwl_mvm *mvm,
1711 struct iwl_rx_cmd_buffer *rxb)
1712 {
1713 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1714 struct iwl_probe_resp_data_notif *notif = (void *)pkt->data;
1715 struct iwl_probe_resp_data *old_data, *new_data;
1716 u32 id = le32_to_cpu(notif->mac_id);
1717 struct ieee80211_vif *vif;
1718 struct iwl_mvm_vif *mvmvif;
1719
1720 IWL_DEBUG_INFO(mvm, "Probe response data notif: noa %d, csa %d\n",
1721 notif->noa_active, notif->csa_counter);
1722
1723 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, false);
1724 if (!vif)
1725 return;
1726
1727 mvmvif = iwl_mvm_vif_from_mac80211(vif);
1728
1729 new_data = kzalloc(sizeof(*new_data), GFP_KERNEL);
1730 if (!new_data)
1731 return;
1732
1733 memcpy(&new_data->notif, notif, sizeof(new_data->notif));
1734
1735 /* noa_attr contains 1 reserved byte, need to substruct it */
1736 new_data->noa_len = sizeof(struct ieee80211_vendor_ie) +
1737 sizeof(new_data->notif.noa_attr) - 1;
1738
1739 /*
1740 * If it's a one time NoA, only one descriptor is needed,
1741 * adjust the length according to len_low.
1742 */
1743 if (new_data->notif.noa_attr.len_low ==
1744 sizeof(struct ieee80211_p2p_noa_desc) + 2)
1745 new_data->noa_len -= sizeof(struct ieee80211_p2p_noa_desc);
1746
1747 old_data = rcu_dereference_protected(mvmvif->deflink.probe_resp_data,
1748 lockdep_is_held(&mvmvif->mvm->mutex));
1749 rcu_assign_pointer(mvmvif->deflink.probe_resp_data, new_data);
1750
1751 if (old_data)
1752 kfree_rcu(old_data, rcu_head);
1753
1754 if (notif->csa_counter != IWL_PROBE_RESP_DATA_NO_CSA &&
1755 notif->csa_counter >= 1)
1756 ieee80211_beacon_set_cntdwn(vif, notif->csa_counter);
1757 }
1758
iwl_mvm_channel_switch_start_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1759 void iwl_mvm_channel_switch_start_notif(struct iwl_mvm *mvm,
1760 struct iwl_rx_cmd_buffer *rxb)
1761 {
1762 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1763 struct ieee80211_vif *csa_vif, *vif;
1764 struct iwl_mvm_vif *mvmvif, *csa_mvmvif;
1765 u32 id_n_color, csa_id;
1766 /* save mac_id or link_id to use later to cancel csa if needed */
1767 u32 id;
1768 u8 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, MAC_CONF_GROUP,
1769 CHANNEL_SWITCH_START_NOTIF, 0);
1770 bool csa_active;
1771
1772 rcu_read_lock();
1773
1774 if (notif_ver < 3) {
1775 struct iwl_channel_switch_start_notif_v1 *notif = (void *)pkt->data;
1776 u32 mac_id;
1777
1778 id_n_color = le32_to_cpu(notif->id_and_color);
1779 mac_id = id_n_color & FW_CTXT_ID_MSK;
1780
1781 vif = iwl_mvm_rcu_dereference_vif_id(mvm, mac_id, true);
1782 if (!vif)
1783 goto out_unlock;
1784
1785 id = mac_id;
1786 csa_active = vif->bss_conf.csa_active;
1787 } else {
1788 struct iwl_channel_switch_start_notif *notif = (void *)pkt->data;
1789 u32 link_id = le32_to_cpu(notif->link_id);
1790 struct ieee80211_bss_conf *bss_conf =
1791 iwl_mvm_rcu_fw_link_id_to_link_conf(mvm, link_id, true);
1792
1793 if (!bss_conf)
1794 goto out_unlock;
1795
1796 id = link_id;
1797 vif = bss_conf->vif;
1798 csa_active = bss_conf->csa_active;
1799 }
1800
1801 mvmvif = iwl_mvm_vif_from_mac80211(vif);
1802 if (notif_ver >= 3)
1803 id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color);
1804
1805 switch (vif->type) {
1806 case NL80211_IFTYPE_AP:
1807 csa_vif = rcu_dereference(mvm->csa_vif);
1808 if (WARN_ON(!csa_vif || !csa_vif->bss_conf.csa_active ||
1809 csa_vif != vif))
1810 goto out_unlock;
1811
1812 csa_mvmvif = iwl_mvm_vif_from_mac80211(csa_vif);
1813 csa_id = FW_CMD_ID_AND_COLOR(csa_mvmvif->id, csa_mvmvif->color);
1814 if (WARN(csa_id != id_n_color,
1815 "channel switch noa notification on unexpected vif (csa_vif=%d, notif=%d)",
1816 csa_id, id_n_color))
1817 goto out_unlock;
1818
1819 IWL_DEBUG_INFO(mvm, "Channel Switch Started Notification\n");
1820
1821 schedule_delayed_work(&mvm->cs_tx_unblock_dwork,
1822 msecs_to_jiffies(IWL_MVM_CS_UNBLOCK_TX_TIMEOUT *
1823 csa_vif->bss_conf.beacon_int));
1824
1825 ieee80211_csa_finish(csa_vif);
1826
1827 rcu_read_unlock();
1828
1829 RCU_INIT_POINTER(mvm->csa_vif, NULL);
1830 return;
1831 case NL80211_IFTYPE_STATION:
1832 /*
1833 * if we don't know about an ongoing channel switch,
1834 * make sure FW cancels it
1835 */
1836 if (iwl_fw_lookup_notif_ver(mvm->fw, MAC_CONF_GROUP,
1837 CHANNEL_SWITCH_ERROR_NOTIF,
1838 0) && !csa_active) {
1839 IWL_DEBUG_INFO(mvm, "Channel Switch was canceled\n");
1840 iwl_mvm_cancel_channel_switch(mvm, vif, id);
1841 break;
1842 }
1843
1844 iwl_mvm_csa_client_absent(mvm, vif);
1845 cancel_delayed_work(&mvmvif->csa_work);
1846 ieee80211_chswitch_done(vif, true);
1847 break;
1848 default:
1849 /* should never happen */
1850 WARN_ON_ONCE(1);
1851 break;
1852 }
1853 out_unlock:
1854 rcu_read_unlock();
1855 }
1856
iwl_mvm_channel_switch_error_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1857 void iwl_mvm_channel_switch_error_notif(struct iwl_mvm *mvm,
1858 struct iwl_rx_cmd_buffer *rxb)
1859 {
1860 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1861 struct iwl_channel_switch_error_notif *notif = (void *)pkt->data;
1862 struct ieee80211_vif *vif;
1863 u32 id = le32_to_cpu(notif->link_id);
1864 u32 csa_err_mask = le32_to_cpu(notif->csa_err_mask);
1865
1866 rcu_read_lock();
1867 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true);
1868 if (!vif) {
1869 rcu_read_unlock();
1870 return;
1871 }
1872
1873 IWL_DEBUG_INFO(mvm, "FW reports CSA error: id=%u, csa_err_mask=%u\n",
1874 id, csa_err_mask);
1875 if (csa_err_mask & (CS_ERR_COUNT_ERROR |
1876 CS_ERR_LONG_DELAY_AFTER_CS |
1877 CS_ERR_TX_BLOCK_TIMER_EXPIRED))
1878 ieee80211_channel_switch_disconnect(vif, true);
1879 rcu_read_unlock();
1880 }
1881
iwl_mvm_rx_missed_vap_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1882 void iwl_mvm_rx_missed_vap_notif(struct iwl_mvm *mvm,
1883 struct iwl_rx_cmd_buffer *rxb)
1884 {
1885 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1886 struct iwl_missed_vap_notif *mb = (void *)pkt->data;
1887 struct ieee80211_vif *vif;
1888 u32 id = le32_to_cpu(mb->mac_id);
1889
1890 IWL_DEBUG_INFO(mvm,
1891 "missed_vap notify mac_id=%u, num_beacon_intervals_elapsed=%u, profile_periodicity=%u\n",
1892 le32_to_cpu(mb->mac_id),
1893 mb->num_beacon_intervals_elapsed,
1894 mb->profile_periodicity);
1895
1896 rcu_read_lock();
1897
1898 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true);
1899 if (vif)
1900 iwl_mvm_connection_loss(mvm, vif, "missed vap beacon");
1901
1902 rcu_read_unlock();
1903 }
1904