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1// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2/*
3 * Copyright (C) 2012-2014, 2018-2022 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
16const 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
23const 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
34struct 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
43static 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
149static 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
173void 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
196int 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 /* Currently, MAC ID 0 should be used only for the managed/IBSS vif */
229 switch (vif->type) {
230 case NL80211_IFTYPE_ADHOC:
231 break;
232 case NL80211_IFTYPE_STATION:
233 if (!vif->p2p)
234 break;
235 fallthrough;
236 default:
237 __clear_bit(0, data.available_mac_ids);
238 }
239
240 ieee80211_iterate_active_interfaces_atomic(
241 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
242 iwl_mvm_mac_iface_iterator, &data);
243
244 /*
245 * In the case we're getting here during resume, it's similar to
246 * firmware restart, and with RESUME_ALL the iterator will find
247 * the vif being added already.
248 * We don't want to reassign any IDs in either case since doing
249 * so would probably assign different IDs (as interfaces aren't
250 * necessarily added in the same order), but the old IDs were
251 * preserved anyway, so skip ID assignment for both resume and
252 * recovery.
253 */
254 if (data.found_vif)
255 return 0;
256
257 /* Therefore, in recovery, we can't get here */
258 if (WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
259 return -EBUSY;
260
261 mvmvif->id = find_first_bit(data.available_mac_ids,
262 NUM_MAC_INDEX_DRIVER);
263 if (mvmvif->id == NUM_MAC_INDEX_DRIVER) {
264 IWL_ERR(mvm, "Failed to init MAC context - no free ID!\n");
265 ret = -EIO;
266 goto exit_fail;
267 }
268
269 if (data.preferred_tsf != NUM_TSF_IDS)
270 mvmvif->tsf_id = data.preferred_tsf;
271 else
272 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids,
273 NUM_TSF_IDS);
274 if (mvmvif->tsf_id == NUM_TSF_IDS) {
275 IWL_ERR(mvm, "Failed to init MAC context - no free TSF!\n");
276 ret = -EIO;
277 goto exit_fail;
278 }
279
280 mvmvif->color = 0;
281
282 INIT_LIST_HEAD(&mvmvif->time_event_data.list);
283 mvmvif->time_event_data.id = TE_MAX;
284
285 /* No need to allocate data queues to P2P Device MAC and NAN.*/
286 if (vif->type == NL80211_IFTYPE_P2P_DEVICE)
287 return 0;
288
289 /* Allocate the CAB queue for softAP and GO interfaces */
290 if (vif->type == NL80211_IFTYPE_AP ||
291 vif->type == NL80211_IFTYPE_ADHOC) {
292 /*
293 * For TVQM this will be overwritten later with the FW assigned
294 * queue value (when queue is enabled).
295 */
296 mvmvif->cab_queue = IWL_MVM_DQA_GCAST_QUEUE;
297 }
298
299 mvmvif->bcast_sta.sta_id = IWL_MVM_INVALID_STA;
300 mvmvif->mcast_sta.sta_id = IWL_MVM_INVALID_STA;
301 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
302
303 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++)
304 mvmvif->smps_requests[i] = IEEE80211_SMPS_AUTOMATIC;
305
306 return 0;
307
308exit_fail:
309 memset(mvmvif, 0, sizeof(struct iwl_mvm_vif));
310 return ret;
311}
312
313static void iwl_mvm_ack_rates(struct iwl_mvm *mvm,
314 struct ieee80211_vif *vif,
315 enum nl80211_band band,
316 u8 *cck_rates, u8 *ofdm_rates)
317{
318 struct ieee80211_supported_band *sband;
319 unsigned long basic = vif->bss_conf.basic_rates;
320 int lowest_present_ofdm = 100;
321 int lowest_present_cck = 100;
322 u8 cck = 0;
323 u8 ofdm = 0;
324 int i;
325
326 sband = mvm->hw->wiphy->bands[band];
327
328 for_each_set_bit(i, &basic, BITS_PER_LONG) {
329 int hw = sband->bitrates[i].hw_value;
330 if (hw >= IWL_FIRST_OFDM_RATE) {
331 ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE);
332 if (lowest_present_ofdm > hw)
333 lowest_present_ofdm = hw;
334 } else {
335 BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0);
336
337 cck |= BIT(hw);
338 if (lowest_present_cck > hw)
339 lowest_present_cck = hw;
340 }
341 }
342
343 /*
344 * Now we've got the basic rates as bitmaps in the ofdm and cck
345 * variables. This isn't sufficient though, as there might not
346 * be all the right rates in the bitmap. E.g. if the only basic
347 * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps
348 * and 6 Mbps because the 802.11-2007 standard says in 9.6:
349 *
350 * [...] a STA responding to a received frame shall transmit
351 * its Control Response frame [...] at the highest rate in the
352 * BSSBasicRateSet parameter that is less than or equal to the
353 * rate of the immediately previous frame in the frame exchange
354 * sequence ([...]) and that is of the same modulation class
355 * ([...]) as the received frame. If no rate contained in the
356 * BSSBasicRateSet parameter meets these conditions, then the
357 * control frame sent in response to a received frame shall be
358 * transmitted at the highest mandatory rate of the PHY that is
359 * less than or equal to the rate of the received frame, and
360 * that is of the same modulation class as the received frame.
361 *
362 * As a consequence, we need to add all mandatory rates that are
363 * lower than all of the basic rates to these bitmaps.
364 */
365
366 if (IWL_RATE_24M_INDEX < lowest_present_ofdm)
367 ofdm |= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE;
368 if (IWL_RATE_12M_INDEX < lowest_present_ofdm)
369 ofdm |= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE;
370 /* 6M already there or needed so always add */
371 ofdm |= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE;
372
373 /*
374 * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP.
375 * Note, however:
376 * - if no CCK rates are basic, it must be ERP since there must
377 * be some basic rates at all, so they're OFDM => ERP PHY
378 * (or we're in 5 GHz, and the cck bitmap will never be used)
379 * - if 11M is a basic rate, it must be ERP as well, so add 5.5M
380 * - if 5.5M is basic, 1M and 2M are mandatory
381 * - if 2M is basic, 1M is mandatory
382 * - if 1M is basic, that's the only valid ACK rate.
383 * As a consequence, it's not as complicated as it sounds, just add
384 * any lower rates to the ACK rate bitmap.
385 */
386 if (IWL_RATE_11M_INDEX < lowest_present_cck)
387 cck |= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE;
388 if (IWL_RATE_5M_INDEX < lowest_present_cck)
389 cck |= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE;
390 if (IWL_RATE_2M_INDEX < lowest_present_cck)
391 cck |= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE;
392 /* 1M already there or needed so always add */
393 cck |= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE;
394
395 *cck_rates = cck;
396 *ofdm_rates = ofdm;
397}
398
399static void iwl_mvm_mac_ctxt_set_ht_flags(struct iwl_mvm *mvm,
400 struct ieee80211_vif *vif,
401 struct iwl_mac_ctx_cmd *cmd)
402{
403 /* for both sta and ap, ht_operation_mode hold the protection_mode */
404 u8 protection_mode = vif->bss_conf.ht_operation_mode &
405 IEEE80211_HT_OP_MODE_PROTECTION;
406 /* The fw does not distinguish between ht and fat */
407 u32 ht_flag = MAC_PROT_FLG_HT_PROT | MAC_PROT_FLG_FAT_PROT;
408
409 IWL_DEBUG_RATE(mvm, "protection mode set to %d\n", protection_mode);
410 /*
411 * See section 9.23.3.1 of IEEE 80211-2012.
412 * Nongreenfield HT STAs Present is not supported.
413 */
414 switch (protection_mode) {
415 case IEEE80211_HT_OP_MODE_PROTECTION_NONE:
416 break;
417 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER:
418 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
419 cmd->protection_flags |= cpu_to_le32(ht_flag);
420 break;
421 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
422 /* Protect when channel wider than 20MHz */
423 if (vif->bss_conf.chandef.width > NL80211_CHAN_WIDTH_20)
424 cmd->protection_flags |= cpu_to_le32(ht_flag);
425 break;
426 default:
427 IWL_ERR(mvm, "Illegal protection mode %d\n",
428 protection_mode);
429 break;
430 }
431}
432
433static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm,
434 struct ieee80211_vif *vif,
435 struct iwl_mac_ctx_cmd *cmd,
436 const u8 *bssid_override,
437 u32 action)
438{
439 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
440 struct ieee80211_chanctx_conf *chanctx;
441 bool ht_enabled = !!(vif->bss_conf.ht_operation_mode &
442 IEEE80211_HT_OP_MODE_PROTECTION);
443 u8 cck_ack_rates, ofdm_ack_rates;
444 const u8 *bssid = bssid_override ?: vif->bss_conf.bssid;
445 int i;
446
447 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
448 mvmvif->color));
449 cmd->action = cpu_to_le32(action);
450
451 switch (vif->type) {
452 case NL80211_IFTYPE_STATION:
453 if (vif->p2p)
454 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_STA);
455 else
456 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_BSS_STA);
457 break;
458 case NL80211_IFTYPE_AP:
459 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_GO);
460 break;
461 case NL80211_IFTYPE_MONITOR:
462 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_LISTENER);
463 break;
464 case NL80211_IFTYPE_P2P_DEVICE:
465 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_DEVICE);
466 break;
467 case NL80211_IFTYPE_ADHOC:
468 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_IBSS);
469 break;
470 default:
471 WARN_ON_ONCE(1);
472 }
473
474 cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id);
475
476 memcpy(cmd->node_addr, vif->addr, ETH_ALEN);
477
478 if (bssid)
479 memcpy(cmd->bssid_addr, bssid, ETH_ALEN);
480 else
481 eth_broadcast_addr(cmd->bssid_addr);
482
483 rcu_read_lock();
484 chanctx = rcu_dereference(vif->bss_conf.chanctx_conf);
485 iwl_mvm_ack_rates(mvm, vif, chanctx ? chanctx->def.chan->band
486 : NL80211_BAND_2GHZ,
487 &cck_ack_rates, &ofdm_ack_rates);
488 rcu_read_unlock();
489
490 cmd->cck_rates = cpu_to_le32((u32)cck_ack_rates);
491 cmd->ofdm_rates = cpu_to_le32((u32)ofdm_ack_rates);
492
493 cmd->cck_short_preamble =
494 cpu_to_le32(vif->bss_conf.use_short_preamble ?
495 MAC_FLG_SHORT_PREAMBLE : 0);
496 cmd->short_slot =
497 cpu_to_le32(vif->bss_conf.use_short_slot ?
498 MAC_FLG_SHORT_SLOT : 0);
499
500 cmd->filter_flags = 0;
501
502 for (i = 0; i < IEEE80211_NUM_ACS; i++) {
503 u8 txf = iwl_mvm_mac_ac_to_tx_fifo(mvm, i);
504 u8 ucode_ac = iwl_mvm_mac80211_ac_to_ucode_ac(i);
505
506 cmd->ac[ucode_ac].cw_min =
507 cpu_to_le16(mvmvif->queue_params[i].cw_min);
508 cmd->ac[ucode_ac].cw_max =
509 cpu_to_le16(mvmvif->queue_params[i].cw_max);
510 cmd->ac[ucode_ac].edca_txop =
511 cpu_to_le16(mvmvif->queue_params[i].txop * 32);
512 cmd->ac[ucode_ac].aifsn = mvmvif->queue_params[i].aifs;
513 cmd->ac[ucode_ac].fifos_mask = BIT(txf);
514 }
515
516 if (vif->bss_conf.qos)
517 cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA);
518
519 if (vif->bss_conf.use_cts_prot)
520 cmd->protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT);
521
522 IWL_DEBUG_RATE(mvm, "use_cts_prot %d, ht_operation_mode %d\n",
523 vif->bss_conf.use_cts_prot,
524 vif->bss_conf.ht_operation_mode);
525 if (vif->bss_conf.chandef.width != NL80211_CHAN_WIDTH_20_NOHT)
526 cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN);
527 if (ht_enabled)
528 iwl_mvm_mac_ctxt_set_ht_flags(mvm, vif, cmd);
529}
530
531static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm *mvm,
532 struct iwl_mac_ctx_cmd *cmd)
533{
534 int ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0,
535 sizeof(*cmd), cmd);
536 if (ret)
537 IWL_ERR(mvm, "Failed to send MAC context (action:%d): %d\n",
538 le32_to_cpu(cmd->action), ret);
539 return ret;
540}
541
542static int iwl_mvm_mac_ctxt_cmd_sta(struct iwl_mvm *mvm,
543 struct ieee80211_vif *vif,
544 u32 action, bool force_assoc_off,
545 const u8 *bssid_override)
546{
547 struct iwl_mac_ctx_cmd cmd = {};
548 struct iwl_mac_data_sta *ctxt_sta;
549
550 WARN_ON(vif->type != NL80211_IFTYPE_STATION);
551
552 /* Fill the common data for all mac context types */
553 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, bssid_override, action);
554
555 /*
556 * We always want to hear MCAST frames, if we're not authorized yet,
557 * we'll drop them.
558 */
559 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_ACCEPT_GRP);
560
561 if (vif->p2p) {
562 struct ieee80211_p2p_noa_attr *noa =
563 &vif->bss_conf.p2p_noa_attr;
564
565 cmd.p2p_sta.ctwin = cpu_to_le32(noa->oppps_ctwindow &
566 IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
567 ctxt_sta = &cmd.p2p_sta.sta;
568 } else {
569 ctxt_sta = &cmd.sta;
570 }
571
572 /* We need the dtim_period to set the MAC as associated */
573 if (vif->cfg.assoc && vif->bss_conf.dtim_period &&
574 !force_assoc_off) {
575 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
576 u32 dtim_offs;
577
578 /*
579 * The DTIM count counts down, so when it is N that means N
580 * more beacon intervals happen until the DTIM TBTT. Therefore
581 * add this to the current time. If that ends up being in the
582 * future, the firmware will handle it.
583 *
584 * Also note that the system_timestamp (which we get here as
585 * "sync_device_ts") and TSF timestamp aren't at exactly the
586 * same offset in the frame -- the TSF is at the first symbol
587 * of the TSF, the system timestamp is at signal acquisition
588 * time. This means there's an offset between them of at most
589 * a few hundred microseconds (24 * 8 bits + PLCP time gives
590 * 384us in the longest case), this is currently not relevant
591 * as the firmware wakes up around 2ms before the TBTT.
592 */
593 dtim_offs = vif->bss_conf.sync_dtim_count *
594 vif->bss_conf.beacon_int;
595 /* convert TU to usecs */
596 dtim_offs *= 1024;
597
598 ctxt_sta->dtim_tsf =
599 cpu_to_le64(vif->bss_conf.sync_tsf + dtim_offs);
600 ctxt_sta->dtim_time =
601 cpu_to_le32(vif->bss_conf.sync_device_ts + dtim_offs);
602 ctxt_sta->assoc_beacon_arrive_time =
603 cpu_to_le32(vif->bss_conf.sync_device_ts);
604
605 IWL_DEBUG_INFO(mvm, "DTIM TBTT is 0x%llx/0x%x, offset %d\n",
606 le64_to_cpu(ctxt_sta->dtim_tsf),
607 le32_to_cpu(ctxt_sta->dtim_time),
608 dtim_offs);
609
610 ctxt_sta->is_assoc = cpu_to_le32(1);
611
612 if (!mvmvif->authorized &&
613 fw_has_capa(&mvm->fw->ucode_capa,
614 IWL_UCODE_TLV_CAPA_COEX_HIGH_PRIO))
615 ctxt_sta->data_policy |=
616 cpu_to_le32(COEX_HIGH_PRIORITY_ENABLE);
617 } else {
618 ctxt_sta->is_assoc = cpu_to_le32(0);
619
620 /* Allow beacons to pass through as long as we are not
621 * associated, or we do not have dtim period information.
622 */
623 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON);
624 }
625
626 ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int);
627 ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
628 vif->bss_conf.dtim_period);
629
630 ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval);
631 ctxt_sta->assoc_id = cpu_to_le32(vif->cfg.aid);
632
633 if (vif->probe_req_reg && vif->cfg.assoc && vif->p2p)
634 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
635
636 if (vif->bss_conf.he_support && !iwlwifi_mod_params.disable_11ax) {
637 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_11AX);
638 if (vif->bss_conf.twt_requester && IWL_MVM_USE_TWT)
639 ctxt_sta->data_policy |= cpu_to_le32(TWT_SUPPORTED);
640 if (vif->bss_conf.twt_protected)
641 ctxt_sta->data_policy |=
642 cpu_to_le32(PROTECTED_TWT_SUPPORTED);
643 if (vif->bss_conf.twt_broadcast)
644 ctxt_sta->data_policy |=
645 cpu_to_le32(BROADCAST_TWT_SUPPORTED);
646 }
647
648
649 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
650}
651
652static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm,
653 struct ieee80211_vif *vif,
654 u32 action)
655{
656 struct iwl_mac_ctx_cmd cmd = {};
657 u32 tfd_queue_msk = BIT(mvm->snif_queue);
658 int ret;
659
660 WARN_ON(vif->type != NL80211_IFTYPE_MONITOR);
661
662 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
663
664 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROMISC |
665 MAC_FILTER_IN_CONTROL_AND_MGMT |
666 MAC_FILTER_IN_BEACON |
667 MAC_FILTER_IN_PROBE_REQUEST |
668 MAC_FILTER_IN_CRC32 |
669 MAC_FILTER_ACCEPT_GRP);
670 ieee80211_hw_set(mvm->hw, RX_INCLUDES_FCS);
671
672 /* Allocate sniffer station */
673 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->snif_sta, tfd_queue_msk,
674 vif->type, IWL_STA_GENERAL_PURPOSE);
675 if (ret)
676 return ret;
677
678 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
679}
680
681static int iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm *mvm,
682 struct ieee80211_vif *vif,
683 u32 action)
684{
685 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
686 struct iwl_mac_ctx_cmd cmd = {};
687
688 WARN_ON(vif->type != NL80211_IFTYPE_ADHOC);
689
690 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
691
692 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_BEACON |
693 MAC_FILTER_IN_PROBE_REQUEST |
694 MAC_FILTER_ACCEPT_GRP);
695
696 /* cmd.ibss.beacon_time/cmd.ibss.beacon_tsf are curently ignored */
697 cmd.ibss.bi = cpu_to_le32(vif->bss_conf.beacon_int);
698
699 /* TODO: Assumes that the beacon id == mac context id */
700 cmd.ibss.beacon_template = cpu_to_le32(mvmvif->id);
701
702 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
703}
704
705struct iwl_mvm_go_iterator_data {
706 bool go_active;
707};
708
709static void iwl_mvm_go_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif)
710{
711 struct iwl_mvm_go_iterator_data *data = _data;
712 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
713
714 if (vif->type == NL80211_IFTYPE_AP && vif->p2p &&
715 mvmvif->ap_ibss_active)
716 data->go_active = true;
717}
718
719static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm,
720 struct ieee80211_vif *vif,
721 u32 action)
722{
723 struct iwl_mac_ctx_cmd cmd = {};
724 struct iwl_mvm_go_iterator_data data = {};
725
726 WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE);
727
728 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
729
730 /* Override the filter flags to accept only probe requests */
731 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
732
733 /*
734 * This flag should be set to true when the P2P Device is
735 * discoverable and there is at least another active P2P GO. Settings
736 * this flag will allow the P2P Device to be discoverable on other
737 * channels in addition to its listen channel.
738 * Note that this flag should not be set in other cases as it opens the
739 * Rx filters on all MAC and increases the number of interrupts.
740 */
741 ieee80211_iterate_active_interfaces_atomic(
742 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
743 iwl_mvm_go_iterator, &data);
744
745 cmd.p2p_dev.is_disc_extended = cpu_to_le32(data.go_active ? 1 : 0);
746 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
747}
748
749void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm,
750 __le32 *tim_index, __le32 *tim_size,
751 u8 *beacon, u32 frame_size)
752{
753 u32 tim_idx;
754 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
755
756 /* The index is relative to frame start but we start looking at the
757 * variable-length part of the beacon. */
758 tim_idx = mgmt->u.beacon.variable - beacon;
759
760 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
761 while ((tim_idx < (frame_size - 2)) &&
762 (beacon[tim_idx] != WLAN_EID_TIM))
763 tim_idx += beacon[tim_idx+1] + 2;
764
765 /* If TIM field was found, set variables */
766 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
767 *tim_index = cpu_to_le32(tim_idx);
768 *tim_size = cpu_to_le32((u32)beacon[tim_idx + 1]);
769 } else {
770 IWL_WARN(mvm, "Unable to find TIM Element in beacon\n");
771 }
772}
773
774static u32 iwl_mvm_find_ie_offset(u8 *beacon, u8 eid, u32 frame_size)
775{
776 struct ieee80211_mgmt *mgmt = (void *)beacon;
777 const u8 *ie;
778
779 if (WARN_ON_ONCE(frame_size <= (mgmt->u.beacon.variable - beacon)))
780 return 0;
781
782 frame_size -= mgmt->u.beacon.variable - beacon;
783
784 ie = cfg80211_find_ie(eid, mgmt->u.beacon.variable, frame_size);
785 if (!ie)
786 return 0;
787
788 return ie - beacon;
789}
790
791static u8 iwl_mvm_mac_ctxt_get_lowest_rate(struct iwl_mvm *mvm,
792 struct ieee80211_tx_info *info,
793 struct ieee80211_vif *vif)
794{
795 struct ieee80211_supported_band *sband;
796 unsigned long basic = vif->bss_conf.basic_rates;
797 u16 lowest_cck = IWL_RATE_COUNT, lowest_ofdm = IWL_RATE_COUNT;
798 u8 rate;
799 u32 i;
800
801 sband = mvm->hw->wiphy->bands[info->band];
802 for_each_set_bit(i, &basic, BITS_PER_LONG) {
803 u16 hw = sband->bitrates[i].hw_value;
804
805 if (hw >= IWL_FIRST_OFDM_RATE) {
806 if (lowest_ofdm > hw)
807 lowest_ofdm = hw;
808 } else if (lowest_cck > hw) {
809 lowest_cck = hw;
810 }
811 }
812
813 if (info->band == NL80211_BAND_2GHZ && !vif->p2p) {
814 if (lowest_cck != IWL_RATE_COUNT)
815 rate = lowest_cck;
816 else if (lowest_ofdm != IWL_RATE_COUNT)
817 rate = lowest_ofdm;
818 else
819 rate = IWL_RATE_1M_INDEX;
820 } else if (lowest_ofdm != IWL_RATE_COUNT) {
821 rate = lowest_ofdm;
822 } else {
823 rate = IWL_RATE_6M_INDEX;
824 }
825
826 return rate;
827}
828
829u16 iwl_mvm_mac_ctxt_get_beacon_flags(const struct iwl_fw *fw, u8 rate_idx)
830{
831 u16 flags = iwl_mvm_mac80211_idx_to_hwrate(fw, rate_idx);
832 bool is_new_rate = iwl_fw_lookup_cmd_ver(fw, BEACON_TEMPLATE_CMD, 0) > 10;
833
834 if (rate_idx <= IWL_FIRST_CCK_RATE)
835 flags |= is_new_rate ? IWL_MAC_BEACON_CCK
836 : IWL_MAC_BEACON_CCK_V1;
837
838 return flags;
839}
840
841u8 iwl_mvm_mac_ctxt_get_beacon_rate(struct iwl_mvm *mvm,
842 struct ieee80211_tx_info *info,
843 struct ieee80211_vif *vif)
844{
845 struct ieee80211_supported_band *sband =
846 mvm->hw->wiphy->bands[info->band];
847 u32 legacy = vif->bss_conf.beacon_tx_rate.control[info->band].legacy;
848
849 /* if beacon rate was configured try using it */
850 if (hweight32(legacy) == 1) {
851 u32 rate = ffs(legacy) - 1;
852
853 return sband->bitrates[rate].hw_value;
854 }
855
856 return iwl_mvm_mac_ctxt_get_lowest_rate(mvm, info, vif);
857}
858
859static void iwl_mvm_mac_ctxt_set_tx(struct iwl_mvm *mvm,
860 struct ieee80211_vif *vif,
861 struct sk_buff *beacon,
862 struct iwl_tx_cmd *tx)
863{
864 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
865 struct ieee80211_tx_info *info;
866 u8 rate;
867 u32 tx_flags;
868
869 info = IEEE80211_SKB_CB(beacon);
870
871 /* Set up TX command fields */
872 tx->len = cpu_to_le16((u16)beacon->len);
873 tx->sta_id = mvmvif->bcast_sta.sta_id;
874 tx->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
875 tx_flags = TX_CMD_FLG_SEQ_CTL | TX_CMD_FLG_TSF;
876 tx_flags |=
877 iwl_mvm_bt_coex_tx_prio(mvm, (void *)beacon->data, info, 0) <<
878 TX_CMD_FLG_BT_PRIO_POS;
879 tx->tx_flags = cpu_to_le32(tx_flags);
880
881 if (!fw_has_capa(&mvm->fw->ucode_capa,
882 IWL_UCODE_TLV_CAPA_BEACON_ANT_SELECTION))
883 iwl_mvm_toggle_tx_ant(mvm, &mvm->mgmt_last_antenna_idx);
884
885 tx->rate_n_flags =
886 cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) <<
887 RATE_MCS_ANT_POS);
888
889 rate = iwl_mvm_mac_ctxt_get_beacon_rate(mvm, info, vif);
890
891 tx->rate_n_flags |=
892 cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(mvm->fw, rate));
893 if (rate == IWL_FIRST_CCK_RATE)
894 tx->rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK_V1);
895
896}
897
898int iwl_mvm_mac_ctxt_send_beacon_cmd(struct iwl_mvm *mvm,
899 struct sk_buff *beacon,
900 void *data, int len)
901{
902 struct iwl_host_cmd cmd = {
903 .id = BEACON_TEMPLATE_CMD,
904 .flags = CMD_ASYNC,
905 };
906
907 cmd.len[0] = len;
908 cmd.data[0] = data;
909 cmd.dataflags[0] = 0;
910 cmd.len[1] = beacon->len;
911 cmd.data[1] = beacon->data;
912 cmd.dataflags[1] = IWL_HCMD_DFL_DUP;
913
914 return iwl_mvm_send_cmd(mvm, &cmd);
915}
916
917static int iwl_mvm_mac_ctxt_send_beacon_v6(struct iwl_mvm *mvm,
918 struct ieee80211_vif *vif,
919 struct sk_buff *beacon)
920{
921 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
922 struct iwl_mac_beacon_cmd_v6 beacon_cmd = {};
923
924 iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx);
925
926 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
927
928 if (vif->type == NL80211_IFTYPE_AP)
929 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
930 &beacon_cmd.tim_size,
931 beacon->data, beacon->len);
932
933 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
934 sizeof(beacon_cmd));
935}
936
937static int iwl_mvm_mac_ctxt_send_beacon_v7(struct iwl_mvm *mvm,
938 struct ieee80211_vif *vif,
939 struct sk_buff *beacon)
940{
941 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
942 struct iwl_mac_beacon_cmd_v7 beacon_cmd = {};
943
944 iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx);
945
946 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
947
948 if (vif->type == NL80211_IFTYPE_AP)
949 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
950 &beacon_cmd.tim_size,
951 beacon->data, beacon->len);
952
953 beacon_cmd.csa_offset =
954 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
955 WLAN_EID_CHANNEL_SWITCH,
956 beacon->len));
957 beacon_cmd.ecsa_offset =
958 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
959 WLAN_EID_EXT_CHANSWITCH_ANN,
960 beacon->len));
961
962 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
963 sizeof(beacon_cmd));
964}
965
966static int iwl_mvm_mac_ctxt_send_beacon_v9(struct iwl_mvm *mvm,
967 struct ieee80211_vif *vif,
968 struct sk_buff *beacon)
969{
970 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
971 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(beacon);
972 struct iwl_mac_beacon_cmd beacon_cmd = {};
973 u8 rate = iwl_mvm_mac_ctxt_get_beacon_rate(mvm, info, vif);
974 u16 flags;
975 struct ieee80211_chanctx_conf *ctx;
976 int channel;
977 flags = iwl_mvm_mac_ctxt_get_beacon_flags(mvm->fw, rate);
978
979 /* Enable FILS on PSC channels only */
980 rcu_read_lock();
981 ctx = rcu_dereference(vif->bss_conf.chanctx_conf);
982 channel = ieee80211_frequency_to_channel(ctx->def.chan->center_freq);
983 WARN_ON(channel == 0);
984 if (cfg80211_channel_is_psc(ctx->def.chan) &&
985 !IWL_MVM_DISABLE_AP_FILS) {
986 flags |= iwl_fw_lookup_cmd_ver(mvm->fw, BEACON_TEMPLATE_CMD,
987 0) > 10 ?
988 IWL_MAC_BEACON_FILS :
989 IWL_MAC_BEACON_FILS_V1;
990 beacon_cmd.short_ssid =
991 cpu_to_le32(~crc32_le(~0, vif->cfg.ssid,
992 vif->cfg.ssid_len));
993 }
994 rcu_read_unlock();
995
996 beacon_cmd.flags = cpu_to_le16(flags);
997 beacon_cmd.byte_cnt = cpu_to_le16((u16)beacon->len);
998 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
999
1000 if (vif->type == NL80211_IFTYPE_AP)
1001 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
1002 &beacon_cmd.tim_size,
1003 beacon->data, beacon->len);
1004
1005 beacon_cmd.csa_offset =
1006 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
1007 WLAN_EID_CHANNEL_SWITCH,
1008 beacon->len));
1009 beacon_cmd.ecsa_offset =
1010 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
1011 WLAN_EID_EXT_CHANSWITCH_ANN,
1012 beacon->len));
1013
1014 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
1015 sizeof(beacon_cmd));
1016}
1017
1018int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm,
1019 struct ieee80211_vif *vif,
1020 struct sk_buff *beacon)
1021{
1022 if (WARN_ON(!beacon))
1023 return -EINVAL;
1024
1025 if (IWL_MVM_NON_TRANSMITTING_AP)
1026 return 0;
1027
1028 if (!fw_has_capa(&mvm->fw->ucode_capa,
1029 IWL_UCODE_TLV_CAPA_CSA_AND_TBTT_OFFLOAD))
1030 return iwl_mvm_mac_ctxt_send_beacon_v6(mvm, vif, beacon);
1031
1032 if (fw_has_api(&mvm->fw->ucode_capa,
1033 IWL_UCODE_TLV_API_NEW_BEACON_TEMPLATE))
1034 return iwl_mvm_mac_ctxt_send_beacon_v9(mvm, vif, beacon);
1035
1036 return iwl_mvm_mac_ctxt_send_beacon_v7(mvm, vif, beacon);
1037}
1038
1039/* The beacon template for the AP/GO/IBSS has changed and needs update */
1040int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm,
1041 struct ieee80211_vif *vif)
1042{
1043 struct sk_buff *beacon;
1044 int ret;
1045
1046 WARN_ON(vif->type != NL80211_IFTYPE_AP &&
1047 vif->type != NL80211_IFTYPE_ADHOC);
1048
1049 beacon = ieee80211_beacon_get_template(mvm->hw, vif, NULL, 0);
1050 if (!beacon)
1051 return -ENOMEM;
1052
1053#ifdef CONFIG_IWLWIFI_DEBUGFS
1054 if (mvm->beacon_inject_active) {
1055 dev_kfree_skb(beacon);
1056 return -EBUSY;
1057 }
1058#endif
1059
1060 ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon);
1061 dev_kfree_skb(beacon);
1062 return ret;
1063}
1064
1065struct iwl_mvm_mac_ap_iterator_data {
1066 struct iwl_mvm *mvm;
1067 struct ieee80211_vif *vif;
1068 u32 beacon_device_ts;
1069 u16 beacon_int;
1070};
1071
1072/* Find the beacon_device_ts and beacon_int for a managed interface */
1073static void iwl_mvm_mac_ap_iterator(void *_data, u8 *mac,
1074 struct ieee80211_vif *vif)
1075{
1076 struct iwl_mvm_mac_ap_iterator_data *data = _data;
1077
1078 if (vif->type != NL80211_IFTYPE_STATION || !vif->cfg.assoc)
1079 return;
1080
1081 /* Station client has higher priority over P2P client*/
1082 if (vif->p2p && data->beacon_device_ts)
1083 return;
1084
1085 data->beacon_device_ts = vif->bss_conf.sync_device_ts;
1086 data->beacon_int = vif->bss_conf.beacon_int;
1087}
1088
1089/*
1090 * Fill the specific data for mac context of type AP of P2P GO
1091 */
1092static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm,
1093 struct ieee80211_vif *vif,
1094 struct iwl_mac_ctx_cmd *cmd,
1095 struct iwl_mac_data_ap *ctxt_ap,
1096 bool add)
1097{
1098 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1099 struct iwl_mvm_mac_ap_iterator_data data = {
1100 .mvm = mvm,
1101 .vif = vif,
1102 .beacon_device_ts = 0
1103 };
1104
1105 /* in AP mode, the MCAST FIFO takes the EDCA params from VO */
1106 cmd->ac[IWL_MVM_TX_FIFO_VO].fifos_mask |= BIT(IWL_MVM_TX_FIFO_MCAST);
1107
1108 /*
1109 * in AP mode, pass probe requests and beacons from other APs
1110 * (needed for ht protection); when there're no any associated
1111 * station don't ask FW to pass beacons to prevent unnecessary
1112 * wake-ups.
1113 */
1114 cmd->filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
1115 if (mvmvif->ap_assoc_sta_count || !mvm->drop_bcn_ap_mode) {
1116 cmd->filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON);
1117 IWL_DEBUG_HC(mvm, "Asking FW to pass beacons\n");
1118 } else {
1119 IWL_DEBUG_HC(mvm, "No need to receive beacons\n");
1120 }
1121
1122 ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int);
1123 ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
1124 vif->bss_conf.dtim_period);
1125
1126 if (!fw_has_api(&mvm->fw->ucode_capa,
1127 IWL_UCODE_TLV_API_STA_TYPE))
1128 ctxt_ap->mcast_qid = cpu_to_le32(mvmvif->cab_queue);
1129
1130 /*
1131 * Only set the beacon time when the MAC is being added, when we
1132 * just modify the MAC then we should keep the time -- the firmware
1133 * can otherwise have a "jumping" TBTT.
1134 */
1135 if (add) {
1136 /*
1137 * If there is a station/P2P client interface which is
1138 * associated, set the AP's TBTT far enough from the station's
1139 * TBTT. Otherwise, set it to the current system time
1140 */
1141 ieee80211_iterate_active_interfaces_atomic(
1142 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
1143 iwl_mvm_mac_ap_iterator, &data);
1144
1145 if (data.beacon_device_ts) {
1146 u32 rand = get_random_u32_inclusive(36, 63);
1147 mvmvif->ap_beacon_time = data.beacon_device_ts +
1148 ieee80211_tu_to_usec(data.beacon_int * rand /
1149 100);
1150 } else {
1151 mvmvif->ap_beacon_time = iwl_mvm_get_systime(mvm);
1152 }
1153 }
1154
1155 ctxt_ap->beacon_time = cpu_to_le32(mvmvif->ap_beacon_time);
1156 ctxt_ap->beacon_tsf = 0; /* unused */
1157
1158 /* TODO: Assume that the beacon id == mac context id */
1159 ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id);
1160}
1161
1162static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm,
1163 struct ieee80211_vif *vif,
1164 u32 action)
1165{
1166 struct iwl_mac_ctx_cmd cmd = {};
1167
1168 WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p);
1169
1170 /* Fill the common data for all mac context types */
1171 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
1172
1173 /* Fill the data specific for ap mode */
1174 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.ap,
1175 action == FW_CTXT_ACTION_ADD);
1176
1177 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
1178}
1179
1180static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm,
1181 struct ieee80211_vif *vif,
1182 u32 action)
1183{
1184 struct iwl_mac_ctx_cmd cmd = {};
1185 struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr;
1186
1187 WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p);
1188
1189 /* Fill the common data for all mac context types */
1190 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
1191
1192 /* Fill the data specific for GO mode */
1193 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.go.ap,
1194 action == FW_CTXT_ACTION_ADD);
1195
1196 cmd.go.ctwin = cpu_to_le32(noa->oppps_ctwindow &
1197 IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
1198 cmd.go.opp_ps_enabled =
1199 cpu_to_le32(!!(noa->oppps_ctwindow &
1200 IEEE80211_P2P_OPPPS_ENABLE_BIT));
1201
1202 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
1203}
1204
1205static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1206 u32 action, bool force_assoc_off,
1207 const u8 *bssid_override)
1208{
1209 switch (vif->type) {
1210 case NL80211_IFTYPE_STATION:
1211 return iwl_mvm_mac_ctxt_cmd_sta(mvm, vif, action,
1212 force_assoc_off,
1213 bssid_override);
1214 case NL80211_IFTYPE_AP:
1215 if (!vif->p2p)
1216 return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action);
1217 else
1218 return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action);
1219 case NL80211_IFTYPE_MONITOR:
1220 return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action);
1221 case NL80211_IFTYPE_P2P_DEVICE:
1222 return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action);
1223 case NL80211_IFTYPE_ADHOC:
1224 return iwl_mvm_mac_ctxt_cmd_ibss(mvm, vif, action);
1225 default:
1226 break;
1227 }
1228
1229 return -EOPNOTSUPP;
1230}
1231
1232int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1233{
1234 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1235 int ret;
1236
1237 if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n",
1238 vif->addr, ieee80211_vif_type_p2p(vif)))
1239 return -EIO;
1240
1241 ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD,
1242 true, NULL);
1243 if (ret)
1244 return ret;
1245
1246 /* will only do anything at resume from D3 time */
1247 iwl_mvm_set_last_nonqos_seq(mvm, vif);
1248
1249 mvmvif->uploaded = true;
1250 return 0;
1251}
1252
1253int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1254 bool force_assoc_off, const u8 *bssid_override)
1255{
1256 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1257
1258 if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n",
1259 vif->addr, ieee80211_vif_type_p2p(vif)))
1260 return -EIO;
1261
1262 return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY,
1263 force_assoc_off, bssid_override);
1264}
1265
1266int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1267{
1268 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1269 struct iwl_mac_ctx_cmd cmd;
1270 int ret;
1271
1272 if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n",
1273 vif->addr, ieee80211_vif_type_p2p(vif)))
1274 return -EIO;
1275
1276 memset(&cmd, 0, sizeof(cmd));
1277
1278 cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
1279 mvmvif->color));
1280 cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE);
1281
1282 ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0,
1283 sizeof(cmd), &cmd);
1284 if (ret) {
1285 IWL_ERR(mvm, "Failed to remove MAC context: %d\n", ret);
1286 return ret;
1287 }
1288
1289 mvmvif->uploaded = false;
1290
1291 if (vif->type == NL80211_IFTYPE_MONITOR) {
1292 __clear_bit(IEEE80211_HW_RX_INCLUDES_FCS, mvm->hw->flags);
1293 iwl_mvm_dealloc_snif_sta(mvm);
1294 }
1295
1296 return 0;
1297}
1298
1299static void iwl_mvm_csa_count_down(struct iwl_mvm *mvm,
1300 struct ieee80211_vif *csa_vif, u32 gp2,
1301 bool tx_success)
1302{
1303 struct iwl_mvm_vif *mvmvif =
1304 iwl_mvm_vif_from_mac80211(csa_vif);
1305
1306 /* Don't start to countdown from a failed beacon */
1307 if (!tx_success && !mvmvif->csa_countdown)
1308 return;
1309
1310 mvmvif->csa_countdown = true;
1311
1312 if (!ieee80211_beacon_cntdwn_is_complete(csa_vif)) {
1313 int c = ieee80211_beacon_update_cntdwn(csa_vif);
1314
1315 iwl_mvm_mac_ctxt_beacon_changed(mvm, csa_vif);
1316 if (csa_vif->p2p &&
1317 !iwl_mvm_te_scheduled(&mvmvif->time_event_data) && gp2 &&
1318 tx_success) {
1319 u32 rel_time = (c + 1) *
1320 csa_vif->bss_conf.beacon_int -
1321 IWL_MVM_CHANNEL_SWITCH_TIME_GO;
1322 u32 apply_time = gp2 + rel_time * 1024;
1323
1324 iwl_mvm_schedule_csa_period(mvm, csa_vif,
1325 IWL_MVM_CHANNEL_SWITCH_TIME_GO -
1326 IWL_MVM_CHANNEL_SWITCH_MARGIN,
1327 apply_time);
1328 }
1329 } else if (!iwl_mvm_te_scheduled(&mvmvif->time_event_data)) {
1330 /* we don't have CSA NoA scheduled yet, switch now */
1331 ieee80211_csa_finish(csa_vif);
1332 RCU_INIT_POINTER(mvm->csa_vif, NULL);
1333 }
1334}
1335
1336void iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm,
1337 struct iwl_rx_cmd_buffer *rxb)
1338{
1339 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1340 unsigned int pkt_len = iwl_rx_packet_payload_len(pkt);
1341 struct iwl_extended_beacon_notif *beacon = (void *)pkt->data;
1342 struct iwl_extended_beacon_notif_v5 *beacon_v5 = (void *)pkt->data;
1343 struct ieee80211_vif *csa_vif;
1344 struct ieee80211_vif *tx_blocked_vif;
1345 struct agg_tx_status *agg_status;
1346 u16 status;
1347
1348 lockdep_assert_held(&mvm->mutex);
1349
1350 mvm->ap_last_beacon_gp2 = le32_to_cpu(beacon->gp2);
1351
1352 if (!iwl_mvm_is_short_beacon_notif_supported(mvm)) {
1353 struct iwl_mvm_tx_resp *beacon_notify_hdr =
1354 &beacon_v5->beacon_notify_hdr;
1355
1356 if (unlikely(pkt_len < sizeof(*beacon_v5)))
1357 return;
1358
1359 mvm->ibss_manager = beacon_v5->ibss_mgr_status != 0;
1360 agg_status = iwl_mvm_get_agg_status(mvm, beacon_notify_hdr);
1361 status = le16_to_cpu(agg_status->status) & TX_STATUS_MSK;
1362 IWL_DEBUG_RX(mvm,
1363 "beacon status %#x retries:%d tsf:0x%016llX gp2:0x%X rate:%d\n",
1364 status, beacon_notify_hdr->failure_frame,
1365 le64_to_cpu(beacon->tsf),
1366 mvm->ap_last_beacon_gp2,
1367 le32_to_cpu(beacon_notify_hdr->initial_rate));
1368 } else {
1369 if (unlikely(pkt_len < sizeof(*beacon)))
1370 return;
1371
1372 mvm->ibss_manager = beacon->ibss_mgr_status != 0;
1373 status = le32_to_cpu(beacon->status) & TX_STATUS_MSK;
1374 IWL_DEBUG_RX(mvm,
1375 "beacon status %#x tsf:0x%016llX gp2:0x%X\n",
1376 status, le64_to_cpu(beacon->tsf),
1377 mvm->ap_last_beacon_gp2);
1378 }
1379
1380 csa_vif = rcu_dereference_protected(mvm->csa_vif,
1381 lockdep_is_held(&mvm->mutex));
1382 if (unlikely(csa_vif && csa_vif->bss_conf.csa_active))
1383 iwl_mvm_csa_count_down(mvm, csa_vif, mvm->ap_last_beacon_gp2,
1384 (status == TX_STATUS_SUCCESS));
1385
1386 tx_blocked_vif = rcu_dereference_protected(mvm->csa_tx_blocked_vif,
1387 lockdep_is_held(&mvm->mutex));
1388 if (unlikely(tx_blocked_vif)) {
1389 struct iwl_mvm_vif *mvmvif =
1390 iwl_mvm_vif_from_mac80211(tx_blocked_vif);
1391
1392 /*
1393 * The channel switch is started and we have blocked the
1394 * stations. If this is the first beacon (the timeout wasn't
1395 * set), set the unblock timeout, otherwise countdown
1396 */
1397 if (!mvm->csa_tx_block_bcn_timeout)
1398 mvm->csa_tx_block_bcn_timeout =
1399 IWL_MVM_CS_UNBLOCK_TX_TIMEOUT;
1400 else
1401 mvm->csa_tx_block_bcn_timeout--;
1402
1403 /* Check if the timeout is expired, and unblock tx */
1404 if (mvm->csa_tx_block_bcn_timeout == 0) {
1405 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
1406 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
1407 }
1408 }
1409}
1410
1411void iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm *mvm,
1412 struct iwl_rx_cmd_buffer *rxb)
1413{
1414 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1415 struct iwl_missed_beacons_notif *mb = (void *)pkt->data;
1416 struct iwl_fw_dbg_trigger_missed_bcon *bcon_trig;
1417 struct iwl_fw_dbg_trigger_tlv *trigger;
1418 u32 stop_trig_missed_bcon, stop_trig_missed_bcon_since_rx;
1419 u32 rx_missed_bcon, rx_missed_bcon_since_rx;
1420 struct ieee80211_vif *vif;
1421 u32 id = le32_to_cpu(mb->mac_id);
1422 union iwl_dbg_tlv_tp_data tp_data = { .fw_pkt = pkt };
1423
1424 IWL_DEBUG_INFO(mvm,
1425 "missed bcn mac_id=%u, consecutive=%u (%u, %u, %u)\n",
1426 le32_to_cpu(mb->mac_id),
1427 le32_to_cpu(mb->consec_missed_beacons),
1428 le32_to_cpu(mb->consec_missed_beacons_since_last_rx),
1429 le32_to_cpu(mb->num_recvd_beacons),
1430 le32_to_cpu(mb->num_expected_beacons));
1431
1432 rcu_read_lock();
1433
1434 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true);
1435 if (!vif)
1436 goto out;
1437
1438 rx_missed_bcon = le32_to_cpu(mb->consec_missed_beacons);
1439 rx_missed_bcon_since_rx =
1440 le32_to_cpu(mb->consec_missed_beacons_since_last_rx);
1441 /*
1442 * TODO: the threshold should be adjusted based on latency conditions,
1443 * and/or in case of a CS flow on one of the other AP vifs.
1444 */
1445 if (rx_missed_bcon > IWL_MVM_MISSED_BEACONS_THRESHOLD_LONG)
1446 iwl_mvm_connection_loss(mvm, vif, "missed beacons");
1447 else if (rx_missed_bcon_since_rx > IWL_MVM_MISSED_BEACONS_THRESHOLD)
1448 ieee80211_beacon_loss(vif);
1449
1450 iwl_dbg_tlv_time_point(&mvm->fwrt,
1451 IWL_FW_INI_TIME_POINT_MISSED_BEACONS, &tp_data);
1452
1453 trigger = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
1454 FW_DBG_TRIGGER_MISSED_BEACONS);
1455 if (!trigger)
1456 goto out;
1457
1458 bcon_trig = (void *)trigger->data;
1459 stop_trig_missed_bcon = le32_to_cpu(bcon_trig->stop_consec_missed_bcon);
1460 stop_trig_missed_bcon_since_rx =
1461 le32_to_cpu(bcon_trig->stop_consec_missed_bcon_since_rx);
1462
1463 /* TODO: implement start trigger */
1464
1465 if (rx_missed_bcon_since_rx >= stop_trig_missed_bcon_since_rx ||
1466 rx_missed_bcon >= stop_trig_missed_bcon)
1467 iwl_fw_dbg_collect_trig(&mvm->fwrt, trigger, NULL);
1468
1469out:
1470 rcu_read_unlock();
1471}
1472
1473void iwl_mvm_rx_stored_beacon_notif(struct iwl_mvm *mvm,
1474 struct iwl_rx_cmd_buffer *rxb)
1475{
1476 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1477 unsigned int pkt_len = iwl_rx_packet_payload_len(pkt);
1478 struct iwl_stored_beacon_notif_common *sb = (void *)pkt->data;
1479 struct ieee80211_rx_status rx_status;
1480 struct sk_buff *skb;
1481 u8 *data;
1482 u32 size = le32_to_cpu(sb->byte_count);
1483 int ver = iwl_fw_lookup_cmd_ver(mvm->fw,
1484 WIDE_ID(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF),
1485 0);
1486
1487 if (size == 0)
1488 return;
1489
1490 /* handle per-version differences */
1491 if (ver <= 2) {
1492 struct iwl_stored_beacon_notif_v2 *sb_v2 = (void *)pkt->data;
1493
1494 if (pkt_len < struct_size(sb_v2, data, size))
1495 return;
1496
1497 data = sb_v2->data;
1498 } else {
1499 struct iwl_stored_beacon_notif_v3 *sb_v3 = (void *)pkt->data;
1500
1501 if (pkt_len < struct_size(sb_v3, data, size))
1502 return;
1503
1504 data = sb_v3->data;
1505 }
1506
1507 skb = alloc_skb(size, GFP_ATOMIC);
1508 if (!skb) {
1509 IWL_ERR(mvm, "alloc_skb failed\n");
1510 return;
1511 }
1512
1513 /* update rx_status according to the notification's metadata */
1514 memset(&rx_status, 0, sizeof(rx_status));
1515 rx_status.mactime = le64_to_cpu(sb->tsf);
1516 /* TSF as indicated by the firmware is at INA time */
1517 rx_status.flag |= RX_FLAG_MACTIME_PLCP_START;
1518 rx_status.device_timestamp = le32_to_cpu(sb->system_time);
1519 rx_status.band =
1520 (sb->band & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ?
1521 NL80211_BAND_2GHZ : NL80211_BAND_5GHZ;
1522 rx_status.freq =
1523 ieee80211_channel_to_frequency(le16_to_cpu(sb->channel),
1524 rx_status.band);
1525
1526 /* copy the data */
1527 skb_put_data(skb, data, size);
1528 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
1529
1530 /* pass it as regular rx to mac80211 */
1531 ieee80211_rx_napi(mvm->hw, NULL, skb, NULL);
1532}
1533
1534void iwl_mvm_probe_resp_data_notif(struct iwl_mvm *mvm,
1535 struct iwl_rx_cmd_buffer *rxb)
1536{
1537 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1538 struct iwl_probe_resp_data_notif *notif = (void *)pkt->data;
1539 struct iwl_probe_resp_data *old_data, *new_data;
1540 u32 id = le32_to_cpu(notif->mac_id);
1541 struct ieee80211_vif *vif;
1542 struct iwl_mvm_vif *mvmvif;
1543
1544 IWL_DEBUG_INFO(mvm, "Probe response data notif: noa %d, csa %d\n",
1545 notif->noa_active, notif->csa_counter);
1546
1547 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, false);
1548 if (!vif)
1549 return;
1550
1551 mvmvif = iwl_mvm_vif_from_mac80211(vif);
1552
1553 new_data = kzalloc(sizeof(*new_data), GFP_KERNEL);
1554 if (!new_data)
1555 return;
1556
1557 memcpy(&new_data->notif, notif, sizeof(new_data->notif));
1558
1559 /* noa_attr contains 1 reserved byte, need to substruct it */
1560 new_data->noa_len = sizeof(struct ieee80211_vendor_ie) +
1561 sizeof(new_data->notif.noa_attr) - 1;
1562
1563 /*
1564 * If it's a one time NoA, only one descriptor is needed,
1565 * adjust the length according to len_low.
1566 */
1567 if (new_data->notif.noa_attr.len_low ==
1568 sizeof(struct ieee80211_p2p_noa_desc) + 2)
1569 new_data->noa_len -= sizeof(struct ieee80211_p2p_noa_desc);
1570
1571 old_data = rcu_dereference_protected(mvmvif->probe_resp_data,
1572 lockdep_is_held(&mvmvif->mvm->mutex));
1573 rcu_assign_pointer(mvmvif->probe_resp_data, new_data);
1574
1575 if (old_data)
1576 kfree_rcu(old_data, rcu_head);
1577
1578 if (notif->csa_counter != IWL_PROBE_RESP_DATA_NO_CSA &&
1579 notif->csa_counter >= 1)
1580 ieee80211_beacon_set_cntdwn(vif, notif->csa_counter);
1581}
1582
1583void iwl_mvm_channel_switch_start_notif(struct iwl_mvm *mvm,
1584 struct iwl_rx_cmd_buffer *rxb)
1585{
1586 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1587 struct iwl_channel_switch_start_notif *notif = (void *)pkt->data;
1588 struct ieee80211_vif *csa_vif, *vif;
1589 struct iwl_mvm_vif *mvmvif;
1590 u32 id_n_color, csa_id, mac_id;
1591
1592 id_n_color = le32_to_cpu(notif->id_and_color);
1593 mac_id = id_n_color & FW_CTXT_ID_MSK;
1594
1595 if (WARN_ON_ONCE(mac_id >= NUM_MAC_INDEX_DRIVER))
1596 return;
1597
1598 rcu_read_lock();
1599 vif = rcu_dereference(mvm->vif_id_to_mac[mac_id]);
1600 mvmvif = iwl_mvm_vif_from_mac80211(vif);
1601
1602 switch (vif->type) {
1603 case NL80211_IFTYPE_AP:
1604 csa_vif = rcu_dereference(mvm->csa_vif);
1605 if (WARN_ON(!csa_vif || !csa_vif->bss_conf.csa_active ||
1606 csa_vif != vif))
1607 goto out_unlock;
1608
1609 csa_id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color);
1610 if (WARN(csa_id != id_n_color,
1611 "channel switch noa notification on unexpected vif (csa_vif=%d, notif=%d)",
1612 csa_id, id_n_color))
1613 goto out_unlock;
1614
1615 IWL_DEBUG_INFO(mvm, "Channel Switch Started Notification\n");
1616
1617 schedule_delayed_work(&mvm->cs_tx_unblock_dwork,
1618 msecs_to_jiffies(IWL_MVM_CS_UNBLOCK_TX_TIMEOUT *
1619 csa_vif->bss_conf.beacon_int));
1620
1621 ieee80211_csa_finish(csa_vif);
1622
1623 rcu_read_unlock();
1624
1625 RCU_INIT_POINTER(mvm->csa_vif, NULL);
1626 return;
1627 case NL80211_IFTYPE_STATION:
1628 /*
1629 * if we don't know about an ongoing channel switch,
1630 * make sure FW cancels it
1631 */
1632 if (iwl_fw_lookup_notif_ver(mvm->fw, MAC_CONF_GROUP,
1633 CHANNEL_SWITCH_ERROR_NOTIF,
1634 0) && !vif->bss_conf.csa_active) {
1635 IWL_DEBUG_INFO(mvm, "Channel Switch was canceled\n");
1636 iwl_mvm_cancel_channel_switch(mvm, vif, mac_id);
1637 break;
1638 }
1639
1640 iwl_mvm_csa_client_absent(mvm, vif);
1641 cancel_delayed_work(&mvmvif->csa_work);
1642 ieee80211_chswitch_done(vif, true);
1643 break;
1644 default:
1645 /* should never happen */
1646 WARN_ON_ONCE(1);
1647 break;
1648 }
1649out_unlock:
1650 rcu_read_unlock();
1651}
1652
1653void iwl_mvm_channel_switch_error_notif(struct iwl_mvm *mvm,
1654 struct iwl_rx_cmd_buffer *rxb)
1655{
1656 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1657 struct iwl_channel_switch_error_notif *notif = (void *)pkt->data;
1658 struct ieee80211_vif *vif;
1659 u32 id = le32_to_cpu(notif->mac_id);
1660 u32 csa_err_mask = le32_to_cpu(notif->csa_err_mask);
1661
1662 rcu_read_lock();
1663 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true);
1664 if (!vif) {
1665 rcu_read_unlock();
1666 return;
1667 }
1668
1669 IWL_DEBUG_INFO(mvm, "FW reports CSA error: mac_id=%u, csa_err_mask=%u\n",
1670 id, csa_err_mask);
1671 if (csa_err_mask & (CS_ERR_COUNT_ERROR |
1672 CS_ERR_LONG_DELAY_AFTER_CS |
1673 CS_ERR_TX_BLOCK_TIMER_EXPIRED))
1674 ieee80211_channel_switch_disconnect(vif, true);
1675 rcu_read_unlock();
1676}
1677
1678void iwl_mvm_rx_missed_vap_notif(struct iwl_mvm *mvm,
1679 struct iwl_rx_cmd_buffer *rxb)
1680{
1681 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1682 struct iwl_missed_vap_notif *mb = (void *)pkt->data;
1683 struct ieee80211_vif *vif;
1684 u32 id = le32_to_cpu(mb->mac_id);
1685
1686 IWL_DEBUG_INFO(mvm,
1687 "missed_vap notify mac_id=%u, num_beacon_intervals_elapsed=%u, profile_periodicity=%u\n",
1688 le32_to_cpu(mb->mac_id),
1689 mb->num_beacon_intervals_elapsed,
1690 mb->profile_periodicity);
1691
1692 rcu_read_lock();
1693
1694 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true);
1695 if (vif)
1696 iwl_mvm_connection_loss(mvm, vif, "missed vap beacon");
1697
1698 rcu_read_unlock();
1699}