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 
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 
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 
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 
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 
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 	/* 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 
308 exit_fail:
309 	memset(mvmvif, 0, sizeof(struct iwl_mvm_vif));
310 	return ret;
311 }
312 
313 static 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 
399 static 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 
433 static 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 
531 static 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 
542 static 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 
652 static 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 
681 static 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 
705 struct iwl_mvm_go_iterator_data {
706 	bool go_active;
707 };
708 
709 static 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 
719 static 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 
749 void 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 
774 static 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 
791 u8 iwl_mvm_mac_ctxt_get_lowest_rate(struct ieee80211_tx_info *info,
792 				    struct ieee80211_vif *vif)
793 {
794 	u8 rate;
795 	if (info->band == NL80211_BAND_2GHZ && !vif->p2p)
796 		rate = IWL_FIRST_CCK_RATE;
797 	else
798 		rate = IWL_FIRST_OFDM_RATE;
799 
800 	return rate;
801 }
802 
803 u16 iwl_mvm_mac_ctxt_get_beacon_flags(const struct iwl_fw *fw, u8 rate_idx)
804 {
805 	u16 flags = iwl_mvm_mac80211_idx_to_hwrate(fw, rate_idx);
806 	bool is_new_rate = iwl_fw_lookup_cmd_ver(fw, BEACON_TEMPLATE_CMD, 0) > 10;
807 
808 	if (rate_idx <= IWL_FIRST_CCK_RATE)
809 		flags |= is_new_rate ? IWL_MAC_BEACON_CCK
810 			  : IWL_MAC_BEACON_CCK_V1;
811 
812 	return flags;
813 }
814 
815 static void iwl_mvm_mac_ctxt_set_tx(struct iwl_mvm *mvm,
816 				    struct ieee80211_vif *vif,
817 				    struct sk_buff *beacon,
818 				    struct iwl_tx_cmd *tx)
819 {
820 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
821 	struct ieee80211_tx_info *info;
822 	u8 rate;
823 	u32 tx_flags;
824 
825 	info = IEEE80211_SKB_CB(beacon);
826 
827 	/* Set up TX command fields */
828 	tx->len = cpu_to_le16((u16)beacon->len);
829 	tx->sta_id = mvmvif->bcast_sta.sta_id;
830 	tx->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
831 	tx_flags = TX_CMD_FLG_SEQ_CTL | TX_CMD_FLG_TSF;
832 	tx_flags |=
833 		iwl_mvm_bt_coex_tx_prio(mvm, (void *)beacon->data, info, 0) <<
834 						TX_CMD_FLG_BT_PRIO_POS;
835 	tx->tx_flags = cpu_to_le32(tx_flags);
836 
837 	if (!fw_has_capa(&mvm->fw->ucode_capa,
838 			 IWL_UCODE_TLV_CAPA_BEACON_ANT_SELECTION))
839 		iwl_mvm_toggle_tx_ant(mvm, &mvm->mgmt_last_antenna_idx);
840 
841 	tx->rate_n_flags =
842 		cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) <<
843 			    RATE_MCS_ANT_POS);
844 
845 	rate = iwl_mvm_mac_ctxt_get_lowest_rate(info, vif);
846 
847 	tx->rate_n_flags |=
848 		cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(mvm->fw, rate));
849 	if (rate == IWL_FIRST_CCK_RATE)
850 		tx->rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK_V1);
851 
852 }
853 
854 int iwl_mvm_mac_ctxt_send_beacon_cmd(struct iwl_mvm *mvm,
855 				     struct sk_buff *beacon,
856 				     void *data, int len)
857 {
858 	struct iwl_host_cmd cmd = {
859 		.id = BEACON_TEMPLATE_CMD,
860 		.flags = CMD_ASYNC,
861 	};
862 
863 	cmd.len[0] = len;
864 	cmd.data[0] = data;
865 	cmd.dataflags[0] = 0;
866 	cmd.len[1] = beacon->len;
867 	cmd.data[1] = beacon->data;
868 	cmd.dataflags[1] = IWL_HCMD_DFL_DUP;
869 
870 	return iwl_mvm_send_cmd(mvm, &cmd);
871 }
872 
873 static int iwl_mvm_mac_ctxt_send_beacon_v6(struct iwl_mvm *mvm,
874 					   struct ieee80211_vif *vif,
875 					   struct sk_buff *beacon)
876 {
877 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
878 	struct iwl_mac_beacon_cmd_v6 beacon_cmd = {};
879 
880 	iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx);
881 
882 	beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
883 
884 	if (vif->type == NL80211_IFTYPE_AP)
885 		iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
886 					 &beacon_cmd.tim_size,
887 					 beacon->data, beacon->len);
888 
889 	return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
890 						sizeof(beacon_cmd));
891 }
892 
893 static int iwl_mvm_mac_ctxt_send_beacon_v7(struct iwl_mvm *mvm,
894 					   struct ieee80211_vif *vif,
895 					   struct sk_buff *beacon)
896 {
897 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
898 	struct iwl_mac_beacon_cmd_v7 beacon_cmd = {};
899 
900 	iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx);
901 
902 	beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
903 
904 	if (vif->type == NL80211_IFTYPE_AP)
905 		iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
906 					 &beacon_cmd.tim_size,
907 					 beacon->data, beacon->len);
908 
909 	beacon_cmd.csa_offset =
910 		cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
911 						   WLAN_EID_CHANNEL_SWITCH,
912 						   beacon->len));
913 	beacon_cmd.ecsa_offset =
914 		cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
915 						   WLAN_EID_EXT_CHANSWITCH_ANN,
916 						   beacon->len));
917 
918 	return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
919 						sizeof(beacon_cmd));
920 }
921 
922 static int iwl_mvm_mac_ctxt_send_beacon_v9(struct iwl_mvm *mvm,
923 					   struct ieee80211_vif *vif,
924 					   struct sk_buff *beacon)
925 {
926 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
927 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(beacon);
928 	struct iwl_mac_beacon_cmd beacon_cmd = {};
929 	u8 rate = iwl_mvm_mac_ctxt_get_lowest_rate(info, vif);
930 	u16 flags;
931 	struct ieee80211_chanctx_conf *ctx;
932 	int channel;
933 	flags = iwl_mvm_mac_ctxt_get_beacon_flags(mvm->fw, rate);
934 
935 	/* Enable FILS on PSC channels only */
936 	rcu_read_lock();
937 	ctx = rcu_dereference(vif->bss_conf.chanctx_conf);
938 	channel = ieee80211_frequency_to_channel(ctx->def.chan->center_freq);
939 	WARN_ON(channel == 0);
940 	if (cfg80211_channel_is_psc(ctx->def.chan) &&
941 	    !IWL_MVM_DISABLE_AP_FILS) {
942 		flags |= iwl_fw_lookup_cmd_ver(mvm->fw, BEACON_TEMPLATE_CMD,
943 					       0) > 10 ?
944 			IWL_MAC_BEACON_FILS :
945 			IWL_MAC_BEACON_FILS_V1;
946 		beacon_cmd.short_ssid =
947 			cpu_to_le32(~crc32_le(~0, vif->cfg.ssid,
948 					      vif->cfg.ssid_len));
949 	}
950 	rcu_read_unlock();
951 
952 	beacon_cmd.flags = cpu_to_le16(flags);
953 	beacon_cmd.byte_cnt = cpu_to_le16((u16)beacon->len);
954 	beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
955 
956 	if (vif->type == NL80211_IFTYPE_AP)
957 		iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
958 					 &beacon_cmd.tim_size,
959 					 beacon->data, beacon->len);
960 
961 	beacon_cmd.csa_offset =
962 		cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
963 						   WLAN_EID_CHANNEL_SWITCH,
964 						   beacon->len));
965 	beacon_cmd.ecsa_offset =
966 		cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
967 						   WLAN_EID_EXT_CHANSWITCH_ANN,
968 						   beacon->len));
969 
970 	return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
971 						sizeof(beacon_cmd));
972 }
973 
974 int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm,
975 				 struct ieee80211_vif *vif,
976 				 struct sk_buff *beacon)
977 {
978 	if (WARN_ON(!beacon))
979 		return -EINVAL;
980 
981 	if (IWL_MVM_NON_TRANSMITTING_AP)
982 		return 0;
983 
984 	if (!fw_has_capa(&mvm->fw->ucode_capa,
985 			 IWL_UCODE_TLV_CAPA_CSA_AND_TBTT_OFFLOAD))
986 		return iwl_mvm_mac_ctxt_send_beacon_v6(mvm, vif, beacon);
987 
988 	if (fw_has_api(&mvm->fw->ucode_capa,
989 		       IWL_UCODE_TLV_API_NEW_BEACON_TEMPLATE))
990 		return iwl_mvm_mac_ctxt_send_beacon_v9(mvm, vif, beacon);
991 
992 	return iwl_mvm_mac_ctxt_send_beacon_v7(mvm, vif, beacon);
993 }
994 
995 /* The beacon template for the AP/GO/IBSS has changed and needs update */
996 int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm,
997 				    struct ieee80211_vif *vif)
998 {
999 	struct sk_buff *beacon;
1000 	int ret;
1001 
1002 	WARN_ON(vif->type != NL80211_IFTYPE_AP &&
1003 		vif->type != NL80211_IFTYPE_ADHOC);
1004 
1005 	beacon = ieee80211_beacon_get_template(mvm->hw, vif, NULL, 0);
1006 	if (!beacon)
1007 		return -ENOMEM;
1008 
1009 #ifdef CONFIG_IWLWIFI_DEBUGFS
1010 	if (mvm->beacon_inject_active) {
1011 		dev_kfree_skb(beacon);
1012 		return -EBUSY;
1013 	}
1014 #endif
1015 
1016 	ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon);
1017 	dev_kfree_skb(beacon);
1018 	return ret;
1019 }
1020 
1021 struct iwl_mvm_mac_ap_iterator_data {
1022 	struct iwl_mvm *mvm;
1023 	struct ieee80211_vif *vif;
1024 	u32 beacon_device_ts;
1025 	u16 beacon_int;
1026 };
1027 
1028 /* Find the beacon_device_ts and beacon_int for a managed interface */
1029 static void iwl_mvm_mac_ap_iterator(void *_data, u8 *mac,
1030 				    struct ieee80211_vif *vif)
1031 {
1032 	struct iwl_mvm_mac_ap_iterator_data *data = _data;
1033 
1034 	if (vif->type != NL80211_IFTYPE_STATION || !vif->cfg.assoc)
1035 		return;
1036 
1037 	/* Station client has higher priority over P2P client*/
1038 	if (vif->p2p && data->beacon_device_ts)
1039 		return;
1040 
1041 	data->beacon_device_ts = vif->bss_conf.sync_device_ts;
1042 	data->beacon_int = vif->bss_conf.beacon_int;
1043 }
1044 
1045 /*
1046  * Fill the specific data for mac context of type AP of P2P GO
1047  */
1048 static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm,
1049 					 struct ieee80211_vif *vif,
1050 					 struct iwl_mac_ctx_cmd *cmd,
1051 					 struct iwl_mac_data_ap *ctxt_ap,
1052 					 bool add)
1053 {
1054 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1055 	struct iwl_mvm_mac_ap_iterator_data data = {
1056 		.mvm = mvm,
1057 		.vif = vif,
1058 		.beacon_device_ts = 0
1059 	};
1060 
1061 	/* in AP mode, the MCAST FIFO takes the EDCA params from VO */
1062 	cmd->ac[IWL_MVM_TX_FIFO_VO].fifos_mask |= BIT(IWL_MVM_TX_FIFO_MCAST);
1063 
1064 	/*
1065 	 * in AP mode, pass probe requests and beacons from other APs
1066 	 * (needed for ht protection); when there're no any associated
1067 	 * station don't ask FW to pass beacons to prevent unnecessary
1068 	 * wake-ups.
1069 	 */
1070 	cmd->filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
1071 	if (mvmvif->ap_assoc_sta_count || !mvm->drop_bcn_ap_mode) {
1072 		cmd->filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON);
1073 		IWL_DEBUG_HC(mvm, "Asking FW to pass beacons\n");
1074 	} else {
1075 		IWL_DEBUG_HC(mvm, "No need to receive beacons\n");
1076 	}
1077 
1078 	ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int);
1079 	ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
1080 					     vif->bss_conf.dtim_period);
1081 
1082 	if (!fw_has_api(&mvm->fw->ucode_capa,
1083 			IWL_UCODE_TLV_API_STA_TYPE))
1084 		ctxt_ap->mcast_qid = cpu_to_le32(mvmvif->cab_queue);
1085 
1086 	/*
1087 	 * Only set the beacon time when the MAC is being added, when we
1088 	 * just modify the MAC then we should keep the time -- the firmware
1089 	 * can otherwise have a "jumping" TBTT.
1090 	 */
1091 	if (add) {
1092 		/*
1093 		 * If there is a station/P2P client interface which is
1094 		 * associated, set the AP's TBTT far enough from the station's
1095 		 * TBTT. Otherwise, set it to the current system time
1096 		 */
1097 		ieee80211_iterate_active_interfaces_atomic(
1098 			mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
1099 			iwl_mvm_mac_ap_iterator, &data);
1100 
1101 		if (data.beacon_device_ts) {
1102 			u32 rand = prandom_u32_max(64 - 36) + 36;
1103 			mvmvif->ap_beacon_time = data.beacon_device_ts +
1104 				ieee80211_tu_to_usec(data.beacon_int * rand /
1105 						     100);
1106 		} else {
1107 			mvmvif->ap_beacon_time = iwl_mvm_get_systime(mvm);
1108 		}
1109 	}
1110 
1111 	ctxt_ap->beacon_time = cpu_to_le32(mvmvif->ap_beacon_time);
1112 	ctxt_ap->beacon_tsf = 0; /* unused */
1113 
1114 	/* TODO: Assume that the beacon id == mac context id */
1115 	ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id);
1116 }
1117 
1118 static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm,
1119 				   struct ieee80211_vif *vif,
1120 				   u32 action)
1121 {
1122 	struct iwl_mac_ctx_cmd cmd = {};
1123 
1124 	WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p);
1125 
1126 	/* Fill the common data for all mac context types */
1127 	iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
1128 
1129 	/* Fill the data specific for ap mode */
1130 	iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.ap,
1131 				     action == FW_CTXT_ACTION_ADD);
1132 
1133 	return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
1134 }
1135 
1136 static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm,
1137 				   struct ieee80211_vif *vif,
1138 				   u32 action)
1139 {
1140 	struct iwl_mac_ctx_cmd cmd = {};
1141 	struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr;
1142 
1143 	WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p);
1144 
1145 	/* Fill the common data for all mac context types */
1146 	iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
1147 
1148 	/* Fill the data specific for GO mode */
1149 	iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.go.ap,
1150 				     action == FW_CTXT_ACTION_ADD);
1151 
1152 	cmd.go.ctwin = cpu_to_le32(noa->oppps_ctwindow &
1153 					IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
1154 	cmd.go.opp_ps_enabled =
1155 			cpu_to_le32(!!(noa->oppps_ctwindow &
1156 					IEEE80211_P2P_OPPPS_ENABLE_BIT));
1157 
1158 	return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
1159 }
1160 
1161 static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1162 				u32 action, bool force_assoc_off,
1163 				const u8 *bssid_override)
1164 {
1165 	switch (vif->type) {
1166 	case NL80211_IFTYPE_STATION:
1167 		return iwl_mvm_mac_ctxt_cmd_sta(mvm, vif, action,
1168 						force_assoc_off,
1169 						bssid_override);
1170 	case NL80211_IFTYPE_AP:
1171 		if (!vif->p2p)
1172 			return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action);
1173 		else
1174 			return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action);
1175 	case NL80211_IFTYPE_MONITOR:
1176 		return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action);
1177 	case NL80211_IFTYPE_P2P_DEVICE:
1178 		return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action);
1179 	case NL80211_IFTYPE_ADHOC:
1180 		return iwl_mvm_mac_ctxt_cmd_ibss(mvm, vif, action);
1181 	default:
1182 		break;
1183 	}
1184 
1185 	return -EOPNOTSUPP;
1186 }
1187 
1188 int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1189 {
1190 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1191 	int ret;
1192 
1193 	if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n",
1194 		      vif->addr, ieee80211_vif_type_p2p(vif)))
1195 		return -EIO;
1196 
1197 	ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD,
1198 				   true, NULL);
1199 	if (ret)
1200 		return ret;
1201 
1202 	/* will only do anything at resume from D3 time */
1203 	iwl_mvm_set_last_nonqos_seq(mvm, vif);
1204 
1205 	mvmvif->uploaded = true;
1206 	return 0;
1207 }
1208 
1209 int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1210 			     bool force_assoc_off, const u8 *bssid_override)
1211 {
1212 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1213 
1214 	if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n",
1215 		      vif->addr, ieee80211_vif_type_p2p(vif)))
1216 		return -EIO;
1217 
1218 	return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY,
1219 				    force_assoc_off, bssid_override);
1220 }
1221 
1222 int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1223 {
1224 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1225 	struct iwl_mac_ctx_cmd cmd;
1226 	int ret;
1227 
1228 	if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n",
1229 		      vif->addr, ieee80211_vif_type_p2p(vif)))
1230 		return -EIO;
1231 
1232 	memset(&cmd, 0, sizeof(cmd));
1233 
1234 	cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
1235 							   mvmvif->color));
1236 	cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE);
1237 
1238 	ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0,
1239 				   sizeof(cmd), &cmd);
1240 	if (ret) {
1241 		IWL_ERR(mvm, "Failed to remove MAC context: %d\n", ret);
1242 		return ret;
1243 	}
1244 
1245 	mvmvif->uploaded = false;
1246 
1247 	if (vif->type == NL80211_IFTYPE_MONITOR) {
1248 		__clear_bit(IEEE80211_HW_RX_INCLUDES_FCS, mvm->hw->flags);
1249 		iwl_mvm_dealloc_snif_sta(mvm);
1250 	}
1251 
1252 	return 0;
1253 }
1254 
1255 static void iwl_mvm_csa_count_down(struct iwl_mvm *mvm,
1256 				   struct ieee80211_vif *csa_vif, u32 gp2,
1257 				   bool tx_success)
1258 {
1259 	struct iwl_mvm_vif *mvmvif =
1260 			iwl_mvm_vif_from_mac80211(csa_vif);
1261 
1262 	/* Don't start to countdown from a failed beacon */
1263 	if (!tx_success && !mvmvif->csa_countdown)
1264 		return;
1265 
1266 	mvmvif->csa_countdown = true;
1267 
1268 	if (!ieee80211_beacon_cntdwn_is_complete(csa_vif)) {
1269 		int c = ieee80211_beacon_update_cntdwn(csa_vif);
1270 
1271 		iwl_mvm_mac_ctxt_beacon_changed(mvm, csa_vif);
1272 		if (csa_vif->p2p &&
1273 		    !iwl_mvm_te_scheduled(&mvmvif->time_event_data) && gp2 &&
1274 		    tx_success) {
1275 			u32 rel_time = (c + 1) *
1276 				       csa_vif->bss_conf.beacon_int -
1277 				       IWL_MVM_CHANNEL_SWITCH_TIME_GO;
1278 			u32 apply_time = gp2 + rel_time * 1024;
1279 
1280 			iwl_mvm_schedule_csa_period(mvm, csa_vif,
1281 					 IWL_MVM_CHANNEL_SWITCH_TIME_GO -
1282 					 IWL_MVM_CHANNEL_SWITCH_MARGIN,
1283 					 apply_time);
1284 		}
1285 	} else if (!iwl_mvm_te_scheduled(&mvmvif->time_event_data)) {
1286 		/* we don't have CSA NoA scheduled yet, switch now */
1287 		ieee80211_csa_finish(csa_vif);
1288 		RCU_INIT_POINTER(mvm->csa_vif, NULL);
1289 	}
1290 }
1291 
1292 void iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm,
1293 			     struct iwl_rx_cmd_buffer *rxb)
1294 {
1295 	struct iwl_rx_packet *pkt = rxb_addr(rxb);
1296 	unsigned int pkt_len = iwl_rx_packet_payload_len(pkt);
1297 	struct iwl_extended_beacon_notif *beacon = (void *)pkt->data;
1298 	struct iwl_extended_beacon_notif_v5 *beacon_v5 = (void *)pkt->data;
1299 	struct ieee80211_vif *csa_vif;
1300 	struct ieee80211_vif *tx_blocked_vif;
1301 	struct agg_tx_status *agg_status;
1302 	u16 status;
1303 
1304 	lockdep_assert_held(&mvm->mutex);
1305 
1306 	mvm->ap_last_beacon_gp2 = le32_to_cpu(beacon->gp2);
1307 
1308 	if (!iwl_mvm_is_short_beacon_notif_supported(mvm)) {
1309 		struct iwl_mvm_tx_resp *beacon_notify_hdr =
1310 			&beacon_v5->beacon_notify_hdr;
1311 
1312 		if (unlikely(pkt_len < sizeof(*beacon_v5)))
1313 			return;
1314 
1315 		mvm->ibss_manager = beacon_v5->ibss_mgr_status != 0;
1316 		agg_status = iwl_mvm_get_agg_status(mvm, beacon_notify_hdr);
1317 		status = le16_to_cpu(agg_status->status) & TX_STATUS_MSK;
1318 		IWL_DEBUG_RX(mvm,
1319 			     "beacon status %#x retries:%d tsf:0x%016llX gp2:0x%X rate:%d\n",
1320 			     status, beacon_notify_hdr->failure_frame,
1321 			     le64_to_cpu(beacon->tsf),
1322 			     mvm->ap_last_beacon_gp2,
1323 			     le32_to_cpu(beacon_notify_hdr->initial_rate));
1324 	} else {
1325 		if (unlikely(pkt_len < sizeof(*beacon)))
1326 			return;
1327 
1328 		mvm->ibss_manager = beacon->ibss_mgr_status != 0;
1329 		status = le32_to_cpu(beacon->status) & TX_STATUS_MSK;
1330 		IWL_DEBUG_RX(mvm,
1331 			     "beacon status %#x tsf:0x%016llX gp2:0x%X\n",
1332 			     status, le64_to_cpu(beacon->tsf),
1333 			     mvm->ap_last_beacon_gp2);
1334 	}
1335 
1336 	csa_vif = rcu_dereference_protected(mvm->csa_vif,
1337 					    lockdep_is_held(&mvm->mutex));
1338 	if (unlikely(csa_vif && csa_vif->bss_conf.csa_active))
1339 		iwl_mvm_csa_count_down(mvm, csa_vif, mvm->ap_last_beacon_gp2,
1340 				       (status == TX_STATUS_SUCCESS));
1341 
1342 	tx_blocked_vif = rcu_dereference_protected(mvm->csa_tx_blocked_vif,
1343 						lockdep_is_held(&mvm->mutex));
1344 	if (unlikely(tx_blocked_vif)) {
1345 		struct iwl_mvm_vif *mvmvif =
1346 			iwl_mvm_vif_from_mac80211(tx_blocked_vif);
1347 
1348 		/*
1349 		 * The channel switch is started and we have blocked the
1350 		 * stations. If this is the first beacon (the timeout wasn't
1351 		 * set), set the unblock timeout, otherwise countdown
1352 		 */
1353 		if (!mvm->csa_tx_block_bcn_timeout)
1354 			mvm->csa_tx_block_bcn_timeout =
1355 				IWL_MVM_CS_UNBLOCK_TX_TIMEOUT;
1356 		else
1357 			mvm->csa_tx_block_bcn_timeout--;
1358 
1359 		/* Check if the timeout is expired, and unblock tx */
1360 		if (mvm->csa_tx_block_bcn_timeout == 0) {
1361 			iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
1362 			RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
1363 		}
1364 	}
1365 }
1366 
1367 void iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm *mvm,
1368 				     struct iwl_rx_cmd_buffer *rxb)
1369 {
1370 	struct iwl_rx_packet *pkt = rxb_addr(rxb);
1371 	struct iwl_missed_beacons_notif *mb = (void *)pkt->data;
1372 	struct iwl_fw_dbg_trigger_missed_bcon *bcon_trig;
1373 	struct iwl_fw_dbg_trigger_tlv *trigger;
1374 	u32 stop_trig_missed_bcon, stop_trig_missed_bcon_since_rx;
1375 	u32 rx_missed_bcon, rx_missed_bcon_since_rx;
1376 	struct ieee80211_vif *vif;
1377 	u32 id = le32_to_cpu(mb->mac_id);
1378 	union iwl_dbg_tlv_tp_data tp_data = { .fw_pkt = pkt };
1379 
1380 	IWL_DEBUG_INFO(mvm,
1381 		       "missed bcn mac_id=%u, consecutive=%u (%u, %u, %u)\n",
1382 		       le32_to_cpu(mb->mac_id),
1383 		       le32_to_cpu(mb->consec_missed_beacons),
1384 		       le32_to_cpu(mb->consec_missed_beacons_since_last_rx),
1385 		       le32_to_cpu(mb->num_recvd_beacons),
1386 		       le32_to_cpu(mb->num_expected_beacons));
1387 
1388 	rcu_read_lock();
1389 
1390 	vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true);
1391 	if (!vif)
1392 		goto out;
1393 
1394 	rx_missed_bcon = le32_to_cpu(mb->consec_missed_beacons);
1395 	rx_missed_bcon_since_rx =
1396 		le32_to_cpu(mb->consec_missed_beacons_since_last_rx);
1397 	/*
1398 	 * TODO: the threshold should be adjusted based on latency conditions,
1399 	 * and/or in case of a CS flow on one of the other AP vifs.
1400 	 */
1401 	if (rx_missed_bcon > IWL_MVM_MISSED_BEACONS_THRESHOLD_LONG)
1402 		iwl_mvm_connection_loss(mvm, vif, "missed beacons");
1403 	else if (rx_missed_bcon_since_rx > IWL_MVM_MISSED_BEACONS_THRESHOLD)
1404 		ieee80211_beacon_loss(vif);
1405 
1406 	iwl_dbg_tlv_time_point(&mvm->fwrt,
1407 			       IWL_FW_INI_TIME_POINT_MISSED_BEACONS, &tp_data);
1408 
1409 	trigger = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
1410 					FW_DBG_TRIGGER_MISSED_BEACONS);
1411 	if (!trigger)
1412 		goto out;
1413 
1414 	bcon_trig = (void *)trigger->data;
1415 	stop_trig_missed_bcon = le32_to_cpu(bcon_trig->stop_consec_missed_bcon);
1416 	stop_trig_missed_bcon_since_rx =
1417 		le32_to_cpu(bcon_trig->stop_consec_missed_bcon_since_rx);
1418 
1419 	/* TODO: implement start trigger */
1420 
1421 	if (rx_missed_bcon_since_rx >= stop_trig_missed_bcon_since_rx ||
1422 	    rx_missed_bcon >= stop_trig_missed_bcon)
1423 		iwl_fw_dbg_collect_trig(&mvm->fwrt, trigger, NULL);
1424 
1425 out:
1426 	rcu_read_unlock();
1427 }
1428 
1429 void iwl_mvm_rx_stored_beacon_notif(struct iwl_mvm *mvm,
1430 				    struct iwl_rx_cmd_buffer *rxb)
1431 {
1432 	struct iwl_rx_packet *pkt = rxb_addr(rxb);
1433 	unsigned int pkt_len = iwl_rx_packet_payload_len(pkt);
1434 	struct iwl_stored_beacon_notif_common *sb = (void *)pkt->data;
1435 	struct ieee80211_rx_status rx_status;
1436 	struct sk_buff *skb;
1437 	u8 *data;
1438 	u32 size = le32_to_cpu(sb->byte_count);
1439 	int ver = iwl_fw_lookup_cmd_ver(mvm->fw,
1440 					WIDE_ID(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF),
1441 					0);
1442 
1443 	if (size == 0)
1444 		return;
1445 
1446 	/* handle per-version differences */
1447 	if (ver <= 2) {
1448 		struct iwl_stored_beacon_notif_v2 *sb_v2 = (void *)pkt->data;
1449 
1450 		if (pkt_len < struct_size(sb_v2, data, size))
1451 			return;
1452 
1453 		data = sb_v2->data;
1454 	} else {
1455 		struct iwl_stored_beacon_notif_v3 *sb_v3 = (void *)pkt->data;
1456 
1457 		if (pkt_len < struct_size(sb_v3, data, size))
1458 			return;
1459 
1460 		data = sb_v3->data;
1461 	}
1462 
1463 	skb = alloc_skb(size, GFP_ATOMIC);
1464 	if (!skb) {
1465 		IWL_ERR(mvm, "alloc_skb failed\n");
1466 		return;
1467 	}
1468 
1469 	/* update rx_status according to the notification's metadata */
1470 	memset(&rx_status, 0, sizeof(rx_status));
1471 	rx_status.mactime = le64_to_cpu(sb->tsf);
1472 	/* TSF as indicated by the firmware  is at INA time */
1473 	rx_status.flag |= RX_FLAG_MACTIME_PLCP_START;
1474 	rx_status.device_timestamp = le32_to_cpu(sb->system_time);
1475 	rx_status.band =
1476 		(sb->band & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ?
1477 				NL80211_BAND_2GHZ : NL80211_BAND_5GHZ;
1478 	rx_status.freq =
1479 		ieee80211_channel_to_frequency(le16_to_cpu(sb->channel),
1480 					       rx_status.band);
1481 
1482 	/* copy the data */
1483 	skb_put_data(skb, data, size);
1484 	memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
1485 
1486 	/* pass it as regular rx to mac80211 */
1487 	ieee80211_rx_napi(mvm->hw, NULL, skb, NULL);
1488 }
1489 
1490 void iwl_mvm_probe_resp_data_notif(struct iwl_mvm *mvm,
1491 				   struct iwl_rx_cmd_buffer *rxb)
1492 {
1493 	struct iwl_rx_packet *pkt = rxb_addr(rxb);
1494 	struct iwl_probe_resp_data_notif *notif = (void *)pkt->data;
1495 	struct iwl_probe_resp_data *old_data, *new_data;
1496 	u32 id = le32_to_cpu(notif->mac_id);
1497 	struct ieee80211_vif *vif;
1498 	struct iwl_mvm_vif *mvmvif;
1499 
1500 	IWL_DEBUG_INFO(mvm, "Probe response data notif: noa %d, csa %d\n",
1501 		       notif->noa_active, notif->csa_counter);
1502 
1503 	vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, false);
1504 	if (!vif)
1505 		return;
1506 
1507 	mvmvif = iwl_mvm_vif_from_mac80211(vif);
1508 
1509 	new_data = kzalloc(sizeof(*new_data), GFP_KERNEL);
1510 	if (!new_data)
1511 		return;
1512 
1513 	memcpy(&new_data->notif, notif, sizeof(new_data->notif));
1514 
1515 	/* noa_attr contains 1 reserved byte, need to substruct it */
1516 	new_data->noa_len = sizeof(struct ieee80211_vendor_ie) +
1517 			    sizeof(new_data->notif.noa_attr) - 1;
1518 
1519 	/*
1520 	 * If it's a one time NoA, only one descriptor is needed,
1521 	 * adjust the length according to len_low.
1522 	 */
1523 	if (new_data->notif.noa_attr.len_low ==
1524 	    sizeof(struct ieee80211_p2p_noa_desc) + 2)
1525 		new_data->noa_len -= sizeof(struct ieee80211_p2p_noa_desc);
1526 
1527 	old_data = rcu_dereference_protected(mvmvif->probe_resp_data,
1528 					lockdep_is_held(&mvmvif->mvm->mutex));
1529 	rcu_assign_pointer(mvmvif->probe_resp_data, new_data);
1530 
1531 	if (old_data)
1532 		kfree_rcu(old_data, rcu_head);
1533 
1534 	if (notif->csa_counter != IWL_PROBE_RESP_DATA_NO_CSA &&
1535 	    notif->csa_counter >= 1)
1536 		ieee80211_beacon_set_cntdwn(vif, notif->csa_counter);
1537 }
1538 
1539 void iwl_mvm_channel_switch_start_notif(struct iwl_mvm *mvm,
1540 					struct iwl_rx_cmd_buffer *rxb)
1541 {
1542 	struct iwl_rx_packet *pkt = rxb_addr(rxb);
1543 	struct iwl_channel_switch_start_notif *notif = (void *)pkt->data;
1544 	struct ieee80211_vif *csa_vif, *vif;
1545 	struct iwl_mvm_vif *mvmvif;
1546 	u32 id_n_color, csa_id, mac_id;
1547 
1548 	id_n_color = le32_to_cpu(notif->id_and_color);
1549 	mac_id = id_n_color & FW_CTXT_ID_MSK;
1550 
1551 	if (WARN_ON_ONCE(mac_id >= NUM_MAC_INDEX_DRIVER))
1552 		return;
1553 
1554 	rcu_read_lock();
1555 	vif = rcu_dereference(mvm->vif_id_to_mac[mac_id]);
1556 	mvmvif = iwl_mvm_vif_from_mac80211(vif);
1557 
1558 	switch (vif->type) {
1559 	case NL80211_IFTYPE_AP:
1560 		csa_vif = rcu_dereference(mvm->csa_vif);
1561 		if (WARN_ON(!csa_vif || !csa_vif->bss_conf.csa_active ||
1562 			    csa_vif != vif))
1563 			goto out_unlock;
1564 
1565 		csa_id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color);
1566 		if (WARN(csa_id != id_n_color,
1567 			 "channel switch noa notification on unexpected vif (csa_vif=%d, notif=%d)",
1568 			 csa_id, id_n_color))
1569 			goto out_unlock;
1570 
1571 		IWL_DEBUG_INFO(mvm, "Channel Switch Started Notification\n");
1572 
1573 		schedule_delayed_work(&mvm->cs_tx_unblock_dwork,
1574 				      msecs_to_jiffies(IWL_MVM_CS_UNBLOCK_TX_TIMEOUT *
1575 						       csa_vif->bss_conf.beacon_int));
1576 
1577 		ieee80211_csa_finish(csa_vif);
1578 
1579 		rcu_read_unlock();
1580 
1581 		RCU_INIT_POINTER(mvm->csa_vif, NULL);
1582 		return;
1583 	case NL80211_IFTYPE_STATION:
1584 		/*
1585 		 * if we don't know about an ongoing channel switch,
1586 		 * make sure FW cancels it
1587 		 */
1588 		if (iwl_fw_lookup_notif_ver(mvm->fw, MAC_CONF_GROUP,
1589 					    CHANNEL_SWITCH_ERROR_NOTIF,
1590 					    0) && !vif->bss_conf.csa_active) {
1591 			IWL_DEBUG_INFO(mvm, "Channel Switch was canceled\n");
1592 			iwl_mvm_cancel_channel_switch(mvm, vif, mac_id);
1593 			break;
1594 		}
1595 
1596 		iwl_mvm_csa_client_absent(mvm, vif);
1597 		cancel_delayed_work(&mvmvif->csa_work);
1598 		ieee80211_chswitch_done(vif, true);
1599 		break;
1600 	default:
1601 		/* should never happen */
1602 		WARN_ON_ONCE(1);
1603 		break;
1604 	}
1605 out_unlock:
1606 	rcu_read_unlock();
1607 }
1608 
1609 void iwl_mvm_channel_switch_error_notif(struct iwl_mvm *mvm,
1610 					struct iwl_rx_cmd_buffer *rxb)
1611 {
1612 	struct iwl_rx_packet *pkt = rxb_addr(rxb);
1613 	struct iwl_channel_switch_error_notif *notif = (void *)pkt->data;
1614 	struct ieee80211_vif *vif;
1615 	u32 id = le32_to_cpu(notif->mac_id);
1616 	u32 csa_err_mask = le32_to_cpu(notif->csa_err_mask);
1617 
1618 	rcu_read_lock();
1619 	vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true);
1620 	if (!vif) {
1621 		rcu_read_unlock();
1622 		return;
1623 	}
1624 
1625 	IWL_DEBUG_INFO(mvm, "FW reports CSA error: mac_id=%u, csa_err_mask=%u\n",
1626 		       id, csa_err_mask);
1627 	if (csa_err_mask & (CS_ERR_COUNT_ERROR |
1628 			    CS_ERR_LONG_DELAY_AFTER_CS |
1629 			    CS_ERR_TX_BLOCK_TIMER_EXPIRED))
1630 		ieee80211_channel_switch_disconnect(vif, true);
1631 	rcu_read_unlock();
1632 }
1633 
1634 void iwl_mvm_rx_missed_vap_notif(struct iwl_mvm *mvm,
1635 				 struct iwl_rx_cmd_buffer *rxb)
1636 {
1637 	struct iwl_rx_packet *pkt = rxb_addr(rxb);
1638 	struct iwl_missed_vap_notif *mb = (void *)pkt->data;
1639 	struct ieee80211_vif *vif;
1640 	u32 id = le32_to_cpu(mb->mac_id);
1641 
1642 	IWL_DEBUG_INFO(mvm,
1643 		       "missed_vap notify mac_id=%u, num_beacon_intervals_elapsed=%u, profile_periodicity=%u\n",
1644 		       le32_to_cpu(mb->mac_id),
1645 		       mb->num_beacon_intervals_elapsed,
1646 		       mb->profile_periodicity);
1647 
1648 	rcu_read_lock();
1649 
1650 	vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true);
1651 	if (vif)
1652 		iwl_mvm_connection_loss(mvm, vif, "missed vap beacon");
1653 
1654 	rcu_read_unlock();
1655 }
1656