1  // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2  /*
3   * Copyright (C) 2012-2014, 2018-2024 Intel Corporation
4   * Copyright (C) 2013-2014 Intel Mobile Communications GmbH
5   * Copyright (C) 2015-2017 Intel Deutschland GmbH
6   */
7  #include <linux/etherdevice.h>
8  #include <linux/crc32.h>
9  #include <net/mac80211.h>
10  #include "iwl-io.h"
11  #include "iwl-prph.h"
12  #include "fw-api.h"
13  #include "mvm.h"
14  #include "time-event.h"
15  
16  const u8 iwl_mvm_ac_to_tx_fifo[] = {
17  	IWL_MVM_TX_FIFO_VO,
18  	IWL_MVM_TX_FIFO_VI,
19  	IWL_MVM_TX_FIFO_BE,
20  	IWL_MVM_TX_FIFO_BK,
21  };
22  
23  const u8 iwl_mvm_ac_to_gen2_tx_fifo[] = {
24  	IWL_GEN2_EDCA_TX_FIFO_VO,
25  	IWL_GEN2_EDCA_TX_FIFO_VI,
26  	IWL_GEN2_EDCA_TX_FIFO_BE,
27  	IWL_GEN2_EDCA_TX_FIFO_BK,
28  	IWL_GEN2_TRIG_TX_FIFO_VO,
29  	IWL_GEN2_TRIG_TX_FIFO_VI,
30  	IWL_GEN2_TRIG_TX_FIFO_BE,
31  	IWL_GEN2_TRIG_TX_FIFO_BK,
32  };
33  
34  const u8 iwl_mvm_ac_to_bz_tx_fifo[] = {
35  	IWL_BZ_EDCA_TX_FIFO_VO,
36  	IWL_BZ_EDCA_TX_FIFO_VI,
37  	IWL_BZ_EDCA_TX_FIFO_BE,
38  	IWL_BZ_EDCA_TX_FIFO_BK,
39  	IWL_BZ_TRIG_TX_FIFO_VO,
40  	IWL_BZ_TRIG_TX_FIFO_VI,
41  	IWL_BZ_TRIG_TX_FIFO_BE,
42  	IWL_BZ_TRIG_TX_FIFO_BK,
43  };
44  
45  struct iwl_mvm_mac_iface_iterator_data {
46  	struct iwl_mvm *mvm;
47  	struct ieee80211_vif *vif;
48  	unsigned long available_mac_ids[BITS_TO_LONGS(NUM_MAC_INDEX_DRIVER)];
49  	unsigned long available_tsf_ids[BITS_TO_LONGS(NUM_TSF_IDS)];
50  	enum iwl_tsf_id preferred_tsf;
51  	bool found_vif;
52  };
53  
iwl_mvm_mac_tsf_id_iter(void * _data,u8 * mac,struct ieee80211_vif * vif)54  static void iwl_mvm_mac_tsf_id_iter(void *_data, u8 *mac,
55  				    struct ieee80211_vif *vif)
56  {
57  	struct iwl_mvm_mac_iface_iterator_data *data = _data;
58  	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
59  	u16 min_bi;
60  
61  	/* Skip the interface for which we are trying to assign a tsf_id  */
62  	if (vif == data->vif)
63  		return;
64  
65  	/*
66  	 * The TSF is a hardware/firmware resource, there are 4 and
67  	 * the driver should assign and free them as needed. However,
68  	 * there are cases where 2 MACs should share the same TSF ID
69  	 * for the purpose of clock sync, an optimization to avoid
70  	 * clock drift causing overlapping TBTTs/DTIMs for a GO and
71  	 * client in the system.
72  	 *
73  	 * The firmware will decide according to the MAC type which
74  	 * will be the leader and follower. Clients that need to sync
75  	 * with a remote station will be the leader, and an AP or GO
76  	 * will be the follower.
77  	 *
78  	 * Depending on the new interface type it can be following
79  	 * or become the leader of an existing interface.
80  	 */
81  	switch (data->vif->type) {
82  	case NL80211_IFTYPE_STATION:
83  		/*
84  		 * The new interface is a client, so if the one we're iterating
85  		 * is an AP, and the beacon interval of the AP is a multiple or
86  		 * divisor of the beacon interval of the client, the same TSF
87  		 * should be used to avoid drift between the new client and
88  		 * existing AP. The existing AP will get drift updates from the
89  		 * new client context in this case.
90  		 */
91  		if (vif->type != NL80211_IFTYPE_AP ||
92  		    data->preferred_tsf != NUM_TSF_IDS ||
93  		    !test_bit(mvmvif->tsf_id, data->available_tsf_ids))
94  			break;
95  
96  		min_bi = min(data->vif->bss_conf.beacon_int,
97  			     vif->bss_conf.beacon_int);
98  
99  		if (!min_bi)
100  			break;
101  
102  		if ((data->vif->bss_conf.beacon_int -
103  		     vif->bss_conf.beacon_int) % min_bi == 0) {
104  			data->preferred_tsf = mvmvif->tsf_id;
105  			return;
106  		}
107  		break;
108  
109  	case NL80211_IFTYPE_AP:
110  		/*
111  		 * The new interface is AP/GO, so if its beacon interval is a
112  		 * multiple or a divisor of the beacon interval of an existing
113  		 * interface, it should get drift updates from an existing
114  		 * client or use the same TSF as an existing GO. There's no
115  		 * drift between TSFs internally but if they used different
116  		 * TSFs then a new client MAC could update one of them and
117  		 * cause drift that way.
118  		 */
119  		if ((vif->type != NL80211_IFTYPE_AP &&
120  		     vif->type != NL80211_IFTYPE_STATION) ||
121  		    data->preferred_tsf != NUM_TSF_IDS ||
122  		    !test_bit(mvmvif->tsf_id, data->available_tsf_ids))
123  			break;
124  
125  		min_bi = min(data->vif->bss_conf.beacon_int,
126  			     vif->bss_conf.beacon_int);
127  
128  		if (!min_bi)
129  			break;
130  
131  		if ((data->vif->bss_conf.beacon_int -
132  		     vif->bss_conf.beacon_int) % min_bi == 0) {
133  			data->preferred_tsf = mvmvif->tsf_id;
134  			return;
135  		}
136  		break;
137  	default:
138  		/*
139  		 * For all other interface types there's no need to
140  		 * take drift into account. Either they're exclusive
141  		 * like IBSS and monitor, or we don't care much about
142  		 * their TSF (like P2P Device), but we won't be able
143  		 * to share the TSF resource.
144  		 */
145  		break;
146  	}
147  
148  	/*
149  	 * Unless we exited above, we can't share the TSF resource
150  	 * that the virtual interface we're iterating over is using
151  	 * with the new one, so clear the available bit and if this
152  	 * was the preferred one, reset that as well.
153  	 */
154  	__clear_bit(mvmvif->tsf_id, data->available_tsf_ids);
155  
156  	if (data->preferred_tsf == mvmvif->tsf_id)
157  		data->preferred_tsf = NUM_TSF_IDS;
158  }
159  
iwl_mvm_mac_iface_iterator(void * _data,u8 * mac,struct ieee80211_vif * vif)160  static void iwl_mvm_mac_iface_iterator(void *_data, u8 *mac,
161  				       struct ieee80211_vif *vif)
162  {
163  	struct iwl_mvm_mac_iface_iterator_data *data = _data;
164  	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
165  
166  	/* Iterator may already find the interface being added -- skip it */
167  	if (vif == data->vif) {
168  		data->found_vif = true;
169  		return;
170  	}
171  
172  	/* Mark MAC IDs as used by clearing the available bit, and
173  	 * (below) mark TSFs as used if their existing use is not
174  	 * compatible with the new interface type.
175  	 * No locking or atomic bit operations are needed since the
176  	 * data is on the stack of the caller function.
177  	 */
178  	__clear_bit(mvmvif->id, data->available_mac_ids);
179  
180  	/* find a suitable tsf_id */
181  	iwl_mvm_mac_tsf_id_iter(_data, mac, vif);
182  }
183  
iwl_mvm_mac_ctxt_recalc_tsf_id(struct iwl_mvm * mvm,struct ieee80211_vif * vif)184  void iwl_mvm_mac_ctxt_recalc_tsf_id(struct iwl_mvm *mvm,
185  				    struct ieee80211_vif *vif)
186  {
187  	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
188  	struct iwl_mvm_mac_iface_iterator_data data = {
189  		.mvm = mvm,
190  		.vif = vif,
191  		.available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 },
192  		/* no preference yet */
193  		.preferred_tsf = NUM_TSF_IDS,
194  	};
195  
196  	ieee80211_iterate_active_interfaces_atomic(
197  		mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
198  		iwl_mvm_mac_tsf_id_iter, &data);
199  
200  	if (data.preferred_tsf != NUM_TSF_IDS)
201  		mvmvif->tsf_id = data.preferred_tsf;
202  	else if (!test_bit(mvmvif->tsf_id, data.available_tsf_ids))
203  		mvmvif->tsf_id = find_first_bit(data.available_tsf_ids,
204  						NUM_TSF_IDS);
205  }
206  
iwl_mvm_mac_ctxt_init(struct iwl_mvm * mvm,struct ieee80211_vif * vif)207  int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
208  {
209  	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
210  	struct iwl_mvm_mac_iface_iterator_data data = {
211  		.mvm = mvm,
212  		.vif = vif,
213  		.available_mac_ids = { (1 << NUM_MAC_INDEX_DRIVER) - 1 },
214  		.available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 },
215  		/* no preference yet */
216  		.preferred_tsf = NUM_TSF_IDS,
217  		.found_vif = false,
218  	};
219  	int ret, i;
220  
221  	lockdep_assert_held(&mvm->mutex);
222  
223  	/*
224  	 * Allocate a MAC ID and a TSF for this MAC, along with the queues
225  	 * and other resources.
226  	 */
227  
228  	/*
229  	 * Before the iterator, we start with all MAC IDs and TSFs available.
230  	 *
231  	 * During iteration, all MAC IDs are cleared that are in use by other
232  	 * virtual interfaces, and all TSF IDs are cleared that can't be used
233  	 * by this new virtual interface because they're used by an interface
234  	 * that can't share it with the new one.
235  	 * At the same time, we check if there's a preferred TSF in the case
236  	 * that we should share it with another interface.
237  	 */
238  
239  	/* MAC ID 0 should be used only for the managed/IBSS vif with non-MLO
240  	 * FW API
241  	 */
242  	if (!mvm->mld_api_is_used) {
243  		switch (vif->type) {
244  		case NL80211_IFTYPE_ADHOC:
245  			break;
246  		case NL80211_IFTYPE_STATION:
247  			if (!vif->p2p)
248  				break;
249  			fallthrough;
250  		default:
251  			__clear_bit(0, data.available_mac_ids);
252  		}
253  	}
254  
255  	ieee80211_iterate_active_interfaces_atomic(
256  		mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
257  		iwl_mvm_mac_iface_iterator, &data);
258  
259  	/*
260  	 * In the case we're getting here during resume, it's similar to
261  	 * firmware restart, and with RESUME_ALL the iterator will find
262  	 * the vif being added already.
263  	 * We don't want to reassign any IDs in either case since doing
264  	 * so would probably assign different IDs (as interfaces aren't
265  	 * necessarily added in the same order), but the old IDs were
266  	 * preserved anyway, so skip ID assignment for both resume and
267  	 * recovery.
268  	 */
269  	if (data.found_vif)
270  		return 0;
271  
272  	/* Therefore, in recovery, we can't get here */
273  	if (WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
274  		return -EBUSY;
275  
276  	mvmvif->id = find_first_bit(data.available_mac_ids,
277  				    NUM_MAC_INDEX_DRIVER);
278  	if (mvmvif->id == NUM_MAC_INDEX_DRIVER) {
279  		IWL_ERR(mvm, "Failed to init MAC context - no free ID!\n");
280  		ret = -EIO;
281  		goto exit_fail;
282  	}
283  
284  	if (data.preferred_tsf != NUM_TSF_IDS)
285  		mvmvif->tsf_id = data.preferred_tsf;
286  	else
287  		mvmvif->tsf_id = find_first_bit(data.available_tsf_ids,
288  						NUM_TSF_IDS);
289  	if (mvmvif->tsf_id == NUM_TSF_IDS) {
290  		IWL_ERR(mvm, "Failed to init MAC context - no free TSF!\n");
291  		ret = -EIO;
292  		goto exit_fail;
293  	}
294  
295  	mvmvif->color = 0;
296  
297  	INIT_LIST_HEAD(&mvmvif->time_event_data.list);
298  	mvmvif->time_event_data.id = TE_MAX;
299  	mvmvif->roc_activity = ROC_NUM_ACTIVITIES;
300  
301  	mvmvif->deflink.bcast_sta.sta_id = IWL_MVM_INVALID_STA;
302  	mvmvif->deflink.mcast_sta.sta_id = IWL_MVM_INVALID_STA;
303  	mvmvif->deflink.ap_sta_id = IWL_MVM_INVALID_STA;
304  
305  	/* No need to allocate data queues to P2P Device MAC and NAN.*/
306  	if (vif->type == NL80211_IFTYPE_P2P_DEVICE)
307  		return 0;
308  
309  	/* Allocate the CAB queue for softAP and GO interfaces */
310  	if (vif->type == NL80211_IFTYPE_AP ||
311  	    vif->type == NL80211_IFTYPE_ADHOC) {
312  		/*
313  		 * For TVQM this will be overwritten later with the FW assigned
314  		 * queue value (when queue is enabled).
315  		 */
316  		mvmvif->deflink.cab_queue = IWL_MVM_DQA_GCAST_QUEUE;
317  	}
318  
319  	for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++)
320  		mvmvif->deflink.smps_requests[i] = IEEE80211_SMPS_AUTOMATIC;
321  
322  	return 0;
323  
324  exit_fail:
325  	memset(mvmvif, 0, sizeof(struct iwl_mvm_vif));
326  	return ret;
327  }
328  
iwl_mvm_ack_rates(struct iwl_mvm * mvm,struct ieee80211_vif * vif,enum nl80211_band band,u8 * cck_rates,u8 * ofdm_rates)329  static void iwl_mvm_ack_rates(struct iwl_mvm *mvm,
330  			      struct ieee80211_vif *vif,
331  			      enum nl80211_band band,
332  			      u8 *cck_rates, u8 *ofdm_rates)
333  {
334  	struct ieee80211_supported_band *sband;
335  	unsigned long basic = vif->bss_conf.basic_rates;
336  	int lowest_present_ofdm = 100;
337  	int lowest_present_cck = 100;
338  	u8 cck = 0;
339  	u8 ofdm = 0;
340  	int i;
341  
342  	sband = mvm->hw->wiphy->bands[band];
343  
344  	for_each_set_bit(i, &basic, BITS_PER_LONG) {
345  		int hw = sband->bitrates[i].hw_value;
346  		if (hw >= IWL_FIRST_OFDM_RATE) {
347  			ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE);
348  			if (lowest_present_ofdm > hw)
349  				lowest_present_ofdm = hw;
350  		} else {
351  			BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0);
352  
353  			cck |= BIT(hw);
354  			if (lowest_present_cck > hw)
355  				lowest_present_cck = hw;
356  		}
357  	}
358  
359  	/*
360  	 * Now we've got the basic rates as bitmaps in the ofdm and cck
361  	 * variables. This isn't sufficient though, as there might not
362  	 * be all the right rates in the bitmap. E.g. if the only basic
363  	 * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps
364  	 * and 6 Mbps because the 802.11-2007 standard says in 9.6:
365  	 *
366  	 *    [...] a STA responding to a received frame shall transmit
367  	 *    its Control Response frame [...] at the highest rate in the
368  	 *    BSSBasicRateSet parameter that is less than or equal to the
369  	 *    rate of the immediately previous frame in the frame exchange
370  	 *    sequence ([...]) and that is of the same modulation class
371  	 *    ([...]) as the received frame. If no rate contained in the
372  	 *    BSSBasicRateSet parameter meets these conditions, then the
373  	 *    control frame sent in response to a received frame shall be
374  	 *    transmitted at the highest mandatory rate of the PHY that is
375  	 *    less than or equal to the rate of the received frame, and
376  	 *    that is of the same modulation class as the received frame.
377  	 *
378  	 * As a consequence, we need to add all mandatory rates that are
379  	 * lower than all of the basic rates to these bitmaps.
380  	 */
381  
382  	if (IWL_RATE_24M_INDEX < lowest_present_ofdm)
383  		ofdm |= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE;
384  	if (IWL_RATE_12M_INDEX < lowest_present_ofdm)
385  		ofdm |= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE;
386  	/* 6M already there or needed so always add */
387  	ofdm |= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE;
388  
389  	/*
390  	 * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP.
391  	 * Note, however:
392  	 *  - if no CCK rates are basic, it must be ERP since there must
393  	 *    be some basic rates at all, so they're OFDM => ERP PHY
394  	 *    (or we're in 5 GHz, and the cck bitmap will never be used)
395  	 *  - if 11M is a basic rate, it must be ERP as well, so add 5.5M
396  	 *  - if 5.5M is basic, 1M and 2M are mandatory
397  	 *  - if 2M is basic, 1M is mandatory
398  	 *  - if 1M is basic, that's the only valid ACK rate.
399  	 * As a consequence, it's not as complicated as it sounds, just add
400  	 * any lower rates to the ACK rate bitmap.
401  	 */
402  	if (IWL_RATE_11M_INDEX < lowest_present_cck)
403  		cck |= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE;
404  	if (IWL_RATE_5M_INDEX < lowest_present_cck)
405  		cck |= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE;
406  	if (IWL_RATE_2M_INDEX < lowest_present_cck)
407  		cck |= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE;
408  	/* 1M already there or needed so always add */
409  	cck |= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE;
410  
411  	*cck_rates = cck;
412  	*ofdm_rates = ofdm;
413  }
414  
iwl_mvm_set_fw_basic_rates(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_mvm_vif_link_info * link_info,__le32 * cck_rates,__le32 * ofdm_rates)415  void iwl_mvm_set_fw_basic_rates(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
416  				struct iwl_mvm_vif_link_info *link_info,
417  				__le32 *cck_rates, __le32 *ofdm_rates)
418  {
419  	struct iwl_mvm_phy_ctxt *phy_ctxt;
420  	u8 cck_ack_rates = 0, ofdm_ack_rates = 0;
421  	enum nl80211_band band = NL80211_BAND_2GHZ;
422  
423  	phy_ctxt = link_info->phy_ctxt;
424  	if (phy_ctxt && phy_ctxt->channel)
425  		band = phy_ctxt->channel->band;
426  
427  	iwl_mvm_ack_rates(mvm, vif, band, &cck_ack_rates, &ofdm_ack_rates);
428  
429  	*cck_rates = cpu_to_le32((u32)cck_ack_rates);
430  	*ofdm_rates = cpu_to_le32((u32)ofdm_ack_rates);
431  }
432  
iwl_mvm_set_fw_protection_flags(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_bss_conf * link_conf,__le32 * protection_flags,u32 ht_flag,u32 tgg_flag)433  void iwl_mvm_set_fw_protection_flags(struct iwl_mvm *mvm,
434  				     struct ieee80211_vif *vif,
435  				     struct ieee80211_bss_conf *link_conf,
436  				     __le32 *protection_flags, u32 ht_flag,
437  				     u32 tgg_flag)
438  {
439  	/* for both sta and ap, ht_operation_mode hold the protection_mode */
440  	u8 protection_mode = link_conf->ht_operation_mode &
441  				 IEEE80211_HT_OP_MODE_PROTECTION;
442  	bool ht_enabled = !!(link_conf->ht_operation_mode &
443  			     IEEE80211_HT_OP_MODE_PROTECTION);
444  
445  	if (link_conf->use_cts_prot)
446  		*protection_flags |= cpu_to_le32(tgg_flag);
447  
448  	IWL_DEBUG_RATE(mvm, "use_cts_prot %d, ht_operation_mode %d\n",
449  		       link_conf->use_cts_prot,
450  		       link_conf->ht_operation_mode);
451  
452  	if (!ht_enabled)
453  		return;
454  
455  	IWL_DEBUG_RATE(mvm, "protection mode set to %d\n", protection_mode);
456  	/*
457  	 * See section 9.23.3.1 of IEEE 80211-2012.
458  	 * Nongreenfield HT STAs Present is not supported.
459  	 */
460  	switch (protection_mode) {
461  	case IEEE80211_HT_OP_MODE_PROTECTION_NONE:
462  		break;
463  	case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER:
464  	case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
465  		*protection_flags |= cpu_to_le32(ht_flag);
466  		break;
467  	case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
468  		/* Protect when channel wider than 20MHz */
469  		if (link_conf->chanreq.oper.width > NL80211_CHAN_WIDTH_20)
470  			*protection_flags |= cpu_to_le32(ht_flag);
471  		break;
472  	default:
473  		IWL_ERR(mvm, "Illegal protection mode %d\n",
474  			protection_mode);
475  		break;
476  	}
477  }
478  
iwl_mvm_set_fw_qos_params(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_bss_conf * link_conf,struct iwl_ac_qos * ac,__le32 * qos_flags)479  void iwl_mvm_set_fw_qos_params(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
480  			       struct ieee80211_bss_conf *link_conf,
481  			       struct iwl_ac_qos *ac, __le32 *qos_flags)
482  {
483  	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
484  	struct iwl_mvm_vif_link_info *mvm_link =
485  		mvmvif->link[link_conf->link_id];
486  	int i;
487  
488  	if (!mvm_link)
489  		return;
490  
491  	for (i = 0; i < IEEE80211_NUM_ACS; i++) {
492  		u8 txf = iwl_mvm_mac_ac_to_tx_fifo(mvm, i);
493  		u8 ucode_ac = iwl_mvm_mac80211_ac_to_ucode_ac(i);
494  
495  		ac[ucode_ac].cw_min =
496  			cpu_to_le16(mvm_link->queue_params[i].cw_min);
497  		ac[ucode_ac].cw_max =
498  			cpu_to_le16(mvm_link->queue_params[i].cw_max);
499  		ac[ucode_ac].edca_txop =
500  			cpu_to_le16(mvm_link->queue_params[i].txop * 32);
501  		ac[ucode_ac].aifsn = mvm_link->queue_params[i].aifs;
502  		ac[ucode_ac].fifos_mask = BIT(txf);
503  	}
504  
505  	if (link_conf->qos)
506  		*qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA);
507  
508  	if (link_conf->chanreq.oper.width != NL80211_CHAN_WIDTH_20_NOHT)
509  		*qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN);
510  }
511  
iwl_mvm_get_mac_type(struct ieee80211_vif * vif)512  int iwl_mvm_get_mac_type(struct ieee80211_vif *vif)
513  {
514  	u32 mac_type = FW_MAC_TYPE_BSS_STA;
515  
516  	switch (vif->type) {
517  	case NL80211_IFTYPE_STATION:
518  		if (vif->p2p)
519  			mac_type = FW_MAC_TYPE_P2P_STA;
520  		else
521  			mac_type = FW_MAC_TYPE_BSS_STA;
522  		break;
523  	case NL80211_IFTYPE_AP:
524  		mac_type = FW_MAC_TYPE_GO;
525  		break;
526  	case NL80211_IFTYPE_MONITOR:
527  		mac_type = FW_MAC_TYPE_LISTENER;
528  		break;
529  	case NL80211_IFTYPE_P2P_DEVICE:
530  		mac_type = FW_MAC_TYPE_P2P_DEVICE;
531  		break;
532  	case NL80211_IFTYPE_ADHOC:
533  		mac_type = FW_MAC_TYPE_IBSS;
534  		break;
535  	default:
536  		WARN_ON_ONCE(1);
537  	}
538  	return mac_type;
539  }
540  
iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_mac_ctx_cmd * cmd,const u8 * bssid_override,u32 action)541  static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm,
542  					struct ieee80211_vif *vif,
543  					struct iwl_mac_ctx_cmd *cmd,
544  					const u8 *bssid_override,
545  					u32 action)
546  {
547  	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
548  	const u8 *bssid = bssid_override ?: vif->bss_conf.bssid;
549  	u32 ht_flag;
550  
551  	cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
552  							    mvmvif->color));
553  	cmd->action = cpu_to_le32(action);
554  	cmd->mac_type = cpu_to_le32(iwl_mvm_get_mac_type(vif));
555  
556  	cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id);
557  
558  	memcpy(cmd->node_addr, vif->addr, ETH_ALEN);
559  
560  	if (bssid)
561  		memcpy(cmd->bssid_addr, bssid, ETH_ALEN);
562  	else
563  		eth_broadcast_addr(cmd->bssid_addr);
564  
565  	iwl_mvm_set_fw_basic_rates(mvm, vif, &mvmvif->deflink, &cmd->cck_rates,
566  				   &cmd->ofdm_rates);
567  
568  	cmd->cck_short_preamble =
569  		cpu_to_le32(vif->bss_conf.use_short_preamble ?
570  			    MAC_FLG_SHORT_PREAMBLE : 0);
571  	cmd->short_slot =
572  		cpu_to_le32(vif->bss_conf.use_short_slot ?
573  			    MAC_FLG_SHORT_SLOT : 0);
574  
575  	cmd->filter_flags = 0;
576  
577  	iwl_mvm_set_fw_qos_params(mvm, vif, &vif->bss_conf, cmd->ac,
578  				  &cmd->qos_flags);
579  
580  	/* The fw does not distinguish between ht and fat */
581  	ht_flag = MAC_PROT_FLG_HT_PROT | MAC_PROT_FLG_FAT_PROT;
582  	iwl_mvm_set_fw_protection_flags(mvm, vif, &vif->bss_conf,
583  					&cmd->protection_flags,
584  					ht_flag, MAC_PROT_FLG_TGG_PROTECT);
585  }
586  
iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm * mvm,struct iwl_mac_ctx_cmd * cmd)587  static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm *mvm,
588  				     struct iwl_mac_ctx_cmd *cmd)
589  {
590  	int ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0,
591  				       sizeof(*cmd), cmd);
592  	if (ret)
593  		IWL_ERR(mvm, "Failed to send MAC_CONTEXT_CMD (action:%d): %d\n",
594  			le32_to_cpu(cmd->action), ret);
595  	return ret;
596  }
597  
iwl_mvm_set_fw_dtim_tbtt(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_bss_conf * link_conf,__le64 * dtim_tsf,__le32 * dtim_time,__le32 * assoc_beacon_arrive_time)598  void iwl_mvm_set_fw_dtim_tbtt(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
599  			      struct ieee80211_bss_conf *link_conf,
600  			      __le64 *dtim_tsf, __le32 *dtim_time,
601  			      __le32 *assoc_beacon_arrive_time)
602  {
603  	u32 dtim_offs;
604  
605  	/*
606  	 * The DTIM count counts down, so when it is N that means N
607  	 * more beacon intervals happen until the DTIM TBTT. Therefore
608  	 * add this to the current time. If that ends up being in the
609  	 * future, the firmware will handle it.
610  	 *
611  	 * Also note that the system_timestamp (which we get here as
612  	 * "sync_device_ts") and TSF timestamp aren't at exactly the
613  	 * same offset in the frame -- the TSF is at the first symbol
614  	 * of the TSF, the system timestamp is at signal acquisition
615  	 * time. This means there's an offset between them of at most
616  	 * a few hundred microseconds (24 * 8 bits + PLCP time gives
617  	 * 384us in the longest case), this is currently not relevant
618  	 * as the firmware wakes up around 2ms before the TBTT.
619  	 */
620  	dtim_offs = link_conf->sync_dtim_count *
621  			link_conf->beacon_int;
622  	/* convert TU to usecs */
623  	dtim_offs *= 1024;
624  
625  	*dtim_tsf =
626  		cpu_to_le64(link_conf->sync_tsf + dtim_offs);
627  	*dtim_time =
628  		cpu_to_le32(link_conf->sync_device_ts + dtim_offs);
629  	*assoc_beacon_arrive_time =
630  		cpu_to_le32(link_conf->sync_device_ts);
631  
632  	IWL_DEBUG_INFO(mvm, "DTIM TBTT is 0x%llx/0x%x, offset %d\n",
633  		       le64_to_cpu(*dtim_tsf),
634  		       le32_to_cpu(*dtim_time),
635  		       dtim_offs);
636  }
637  
iwl_mvm_mac_ctxt_cmd_p2p_sta_get_oppps_ctwin(struct iwl_mvm * mvm,struct ieee80211_vif * vif)638  __le32 iwl_mvm_mac_ctxt_cmd_p2p_sta_get_oppps_ctwin(struct iwl_mvm *mvm,
639  						    struct ieee80211_vif *vif)
640  {
641  	struct ieee80211_p2p_noa_attr *noa =
642  		&vif->bss_conf.p2p_noa_attr;
643  
644  	return cpu_to_le32(noa->oppps_ctwindow &
645  			IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
646  }
647  
iwl_mvm_mac_ctxt_cmd_sta_get_twt_policy(struct iwl_mvm * mvm,struct ieee80211_vif * vif)648  u32 iwl_mvm_mac_ctxt_cmd_sta_get_twt_policy(struct iwl_mvm *mvm,
649  					    struct ieee80211_vif *vif)
650  {
651  	u32 twt_policy = 0;
652  
653  	if (vif->bss_conf.twt_requester && IWL_MVM_USE_TWT)
654  		twt_policy |= TWT_SUPPORTED;
655  	if (vif->bss_conf.twt_protected)
656  		twt_policy |= PROTECTED_TWT_SUPPORTED;
657  	if (vif->bss_conf.twt_broadcast)
658  		twt_policy |= BROADCAST_TWT_SUPPORTED;
659  
660  	return twt_policy;
661  }
662  
iwl_mvm_mac_ctxt_cmd_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u32 action,bool force_assoc_off,const u8 * bssid_override)663  static int iwl_mvm_mac_ctxt_cmd_sta(struct iwl_mvm *mvm,
664  				    struct ieee80211_vif *vif,
665  				    u32 action, bool force_assoc_off,
666  				    const u8 *bssid_override)
667  {
668  	struct iwl_mac_ctx_cmd cmd = {};
669  	struct iwl_mac_data_sta *ctxt_sta;
670  
671  	WARN_ON(vif->type != NL80211_IFTYPE_STATION);
672  
673  	/* Fill the common data for all mac context types */
674  	iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, bssid_override, action);
675  
676  	/*
677  	 * We always want to hear MCAST frames, if we're not authorized yet,
678  	 * we'll drop them.
679  	 */
680  	cmd.filter_flags |= cpu_to_le32(MAC_FILTER_ACCEPT_GRP);
681  
682  	if (vif->p2p) {
683  		cmd.p2p_sta.ctwin =
684  			iwl_mvm_mac_ctxt_cmd_p2p_sta_get_oppps_ctwin(mvm, vif);
685  
686  		ctxt_sta = &cmd.p2p_sta.sta;
687  	} else {
688  		ctxt_sta = &cmd.sta;
689  	}
690  
691  	/* We need the dtim_period to set the MAC as associated */
692  	if (vif->cfg.assoc && vif->bss_conf.dtim_period &&
693  	    !force_assoc_off) {
694  		struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
695  
696  		iwl_mvm_set_fw_dtim_tbtt(mvm, vif, &vif->bss_conf,
697  					 &ctxt_sta->dtim_tsf,
698  					 &ctxt_sta->dtim_time,
699  					 &ctxt_sta->assoc_beacon_arrive_time);
700  
701  		ctxt_sta->is_assoc = cpu_to_le32(1);
702  
703  		if (!mvmvif->authorized &&
704  		    fw_has_capa(&mvm->fw->ucode_capa,
705  				IWL_UCODE_TLV_CAPA_COEX_HIGH_PRIO))
706  			ctxt_sta->data_policy |=
707  				cpu_to_le32(COEX_HIGH_PRIORITY_ENABLE);
708  	} else {
709  		ctxt_sta->is_assoc = cpu_to_le32(0);
710  
711  		/* Allow beacons to pass through as long as we are not
712  		 * associated, or we do not have dtim period information.
713  		 */
714  		cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON);
715  	}
716  
717  	ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int);
718  	ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
719  					      vif->bss_conf.dtim_period);
720  
721  	ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval);
722  	ctxt_sta->assoc_id = cpu_to_le32(vif->cfg.aid);
723  
724  	if (vif->probe_req_reg && vif->cfg.assoc && vif->p2p)
725  		cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
726  
727  	if (vif->bss_conf.he_support && !iwlwifi_mod_params.disable_11ax) {
728  		cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_11AX);
729  		ctxt_sta->data_policy |=
730  			cpu_to_le32(iwl_mvm_mac_ctxt_cmd_sta_get_twt_policy(mvm, vif));
731  	}
732  
733  
734  	return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
735  }
736  
iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u32 action)737  static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm,
738  					 struct ieee80211_vif *vif,
739  					 u32 action)
740  {
741  	struct iwl_mac_ctx_cmd cmd = {};
742  	u32 tfd_queue_msk = 0;
743  	int ret;
744  
745  	WARN_ON(vif->type != NL80211_IFTYPE_MONITOR);
746  
747  	iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
748  
749  	cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROMISC |
750  				       MAC_FILTER_IN_CONTROL_AND_MGMT |
751  				       MAC_FILTER_IN_BEACON |
752  				       MAC_FILTER_IN_PROBE_REQUEST |
753  				       MAC_FILTER_IN_CRC32 |
754  				       MAC_FILTER_ACCEPT_GRP);
755  	ieee80211_hw_set(mvm->hw, RX_INCLUDES_FCS);
756  
757  	/*
758  	 * the queue mask is only relevant for old TX API, and
759  	 * mvm->snif_queue isn't set here (it's still set to
760  	 * IWL_MVM_INVALID_QUEUE so the BIT() of it is UB)
761  	 */
762  	if (!iwl_mvm_has_new_tx_api(mvm))
763  		tfd_queue_msk = BIT(mvm->snif_queue);
764  
765  	/* Allocate sniffer station */
766  	ret = iwl_mvm_allocate_int_sta(mvm, &mvm->snif_sta, tfd_queue_msk,
767  				       vif->type, IWL_STA_GENERAL_PURPOSE);
768  	if (ret)
769  		return ret;
770  
771  	return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
772  }
773  
iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u32 action)774  static int iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm *mvm,
775  				     struct ieee80211_vif *vif,
776  				     u32 action)
777  {
778  	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
779  	struct iwl_mac_ctx_cmd cmd = {};
780  
781  	WARN_ON(vif->type != NL80211_IFTYPE_ADHOC);
782  
783  	iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
784  
785  	cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_BEACON |
786  				       MAC_FILTER_IN_PROBE_REQUEST |
787  				       MAC_FILTER_ACCEPT_GRP);
788  
789  	/* cmd.ibss.beacon_time/cmd.ibss.beacon_tsf are curently ignored */
790  	cmd.ibss.bi = cpu_to_le32(vif->bss_conf.beacon_int);
791  
792  	/* TODO: Assumes that the beacon id == mac context id */
793  	cmd.ibss.beacon_template = cpu_to_le32(mvmvif->id);
794  
795  	return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
796  }
797  
798  struct iwl_mvm_go_iterator_data {
799  	bool go_active;
800  };
801  
iwl_mvm_go_iterator(void * _data,u8 * mac,struct ieee80211_vif * vif)802  static void iwl_mvm_go_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif)
803  {
804  	struct iwl_mvm_go_iterator_data *data = _data;
805  	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
806  
807  	if (vif->type == NL80211_IFTYPE_AP && vif->p2p &&
808  	    mvmvif->ap_ibss_active)
809  		data->go_active = true;
810  }
811  
iwl_mac_ctxt_p2p_dev_has_extended_disc(struct iwl_mvm * mvm,struct ieee80211_vif * vif)812  __le32 iwl_mac_ctxt_p2p_dev_has_extended_disc(struct iwl_mvm *mvm,
813  					      struct ieee80211_vif *vif)
814  {
815  	struct iwl_mvm_go_iterator_data data = {};
816  
817  	/*
818  	 * This flag should be set to true when the P2P Device is
819  	 * discoverable and there is at least another active P2P GO. Settings
820  	 * this flag will allow the P2P Device to be discoverable on other
821  	 * channels in addition to its listen channel.
822  	 * Note that this flag should not be set in other cases as it opens the
823  	 * Rx filters on all MAC and increases the number of interrupts.
824  	 */
825  	ieee80211_iterate_active_interfaces_atomic(
826  		mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
827  		iwl_mvm_go_iterator, &data);
828  
829  	return cpu_to_le32(data.go_active ? 1 : 0);
830  }
831  
iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u32 action)832  static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm,
833  					   struct ieee80211_vif *vif,
834  					   u32 action)
835  {
836  	struct iwl_mac_ctx_cmd cmd = {};
837  
838  	WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE);
839  
840  	iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
841  
842  	cmd.p2p_dev.is_disc_extended =
843  		iwl_mac_ctxt_p2p_dev_has_extended_disc(mvm, vif);
844  
845  	/* Override the filter flags to accept only probe requests */
846  	cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
847  
848  	return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
849  }
850  
iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm * mvm,__le32 * tim_index,__le32 * tim_size,u8 * beacon,u32 frame_size)851  void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm,
852  			      __le32 *tim_index, __le32 *tim_size,
853  			      u8 *beacon, u32 frame_size)
854  {
855  	u32 tim_idx;
856  	struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
857  
858  	/* The index is relative to frame start but we start looking at the
859  	 * variable-length part of the beacon. */
860  	tim_idx = mgmt->u.beacon.variable - beacon;
861  
862  	/* Parse variable-length elements of beacon to find WLAN_EID_TIM */
863  	while ((tim_idx < (frame_size - 2)) &&
864  			(beacon[tim_idx] != WLAN_EID_TIM))
865  		tim_idx += beacon[tim_idx+1] + 2;
866  
867  	/* If TIM field was found, set variables */
868  	if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
869  		*tim_index = cpu_to_le32(tim_idx);
870  		*tim_size = cpu_to_le32((u32)beacon[tim_idx + 1]);
871  	} else {
872  		IWL_WARN(mvm, "Unable to find TIM Element in beacon\n");
873  	}
874  }
875  
iwl_mvm_find_ie_offset(u8 * beacon,u8 eid,u32 frame_size)876  u32 iwl_mvm_find_ie_offset(u8 *beacon, u8 eid, u32 frame_size)
877  {
878  	struct ieee80211_mgmt *mgmt = (void *)beacon;
879  	const u8 *ie;
880  
881  	if (WARN_ON_ONCE(frame_size <= (mgmt->u.beacon.variable - beacon)))
882  		return 0;
883  
884  	frame_size -= mgmt->u.beacon.variable - beacon;
885  
886  	ie = cfg80211_find_ie(eid, mgmt->u.beacon.variable, frame_size);
887  	if (!ie)
888  		return 0;
889  
890  	return ie - beacon;
891  }
892  
iwl_mvm_mac_ctxt_get_lowest_rate(struct iwl_mvm * mvm,struct ieee80211_tx_info * info,struct ieee80211_vif * vif)893  u8 iwl_mvm_mac_ctxt_get_lowest_rate(struct iwl_mvm *mvm,
894  				    struct ieee80211_tx_info *info,
895  				    struct ieee80211_vif *vif)
896  {
897  	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
898  	struct ieee80211_supported_band *sband;
899  	unsigned long basic = vif->bss_conf.basic_rates;
900  	u16 lowest_cck = IWL_RATE_COUNT, lowest_ofdm = IWL_RATE_COUNT;
901  	u32 link_id = u32_get_bits(info->control.flags,
902  				   IEEE80211_TX_CTRL_MLO_LINK);
903  	u8 band = info->band;
904  	u8 rate;
905  	u32 i;
906  
907  	if (link_id == IEEE80211_LINK_UNSPECIFIED && ieee80211_vif_is_mld(vif)) {
908  		for (i = 0; i < ARRAY_SIZE(mvmvif->link); i++) {
909  			if (!mvmvif->link[i])
910  				continue;
911  			/* shouldn't do this when >1 link is active */
912  			WARN_ON_ONCE(link_id != IEEE80211_LINK_UNSPECIFIED);
913  			link_id = i;
914  		}
915  	}
916  
917  	if (link_id < IEEE80211_LINK_UNSPECIFIED) {
918  		struct ieee80211_bss_conf *link_conf;
919  
920  		rcu_read_lock();
921  		link_conf = rcu_dereference(vif->link_conf[link_id]);
922  		if (link_conf) {
923  			basic = link_conf->basic_rates;
924  			if (link_conf->chanreq.oper.chan)
925  				band = link_conf->chanreq.oper.chan->band;
926  		}
927  		rcu_read_unlock();
928  	}
929  
930  	sband = mvm->hw->wiphy->bands[band];
931  	for_each_set_bit(i, &basic, BITS_PER_LONG) {
932  		u16 hw = sband->bitrates[i].hw_value;
933  
934  		if (hw >= IWL_FIRST_OFDM_RATE) {
935  			if (lowest_ofdm > hw)
936  				lowest_ofdm = hw;
937  		} else if (lowest_cck > hw) {
938  			lowest_cck = hw;
939  		}
940  	}
941  
942  	if (band == NL80211_BAND_2GHZ && !vif->p2p &&
943  	    vif->type != NL80211_IFTYPE_P2P_DEVICE &&
944  	    !(info->flags & IEEE80211_TX_CTL_NO_CCK_RATE)) {
945  		if (lowest_cck != IWL_RATE_COUNT)
946  			rate = lowest_cck;
947  		else if (lowest_ofdm != IWL_RATE_COUNT)
948  			rate = lowest_ofdm;
949  		else
950  			rate = IWL_RATE_1M_INDEX;
951  	} else if (lowest_ofdm != IWL_RATE_COUNT) {
952  		rate = lowest_ofdm;
953  	} else {
954  		rate = IWL_RATE_6M_INDEX;
955  	}
956  
957  	return rate;
958  }
959  
iwl_mvm_mac_ctxt_get_beacon_flags(const struct iwl_fw * fw,u8 rate_idx)960  u16 iwl_mvm_mac_ctxt_get_beacon_flags(const struct iwl_fw *fw, u8 rate_idx)
961  {
962  	u16 flags = iwl_mvm_mac80211_idx_to_hwrate(fw, rate_idx);
963  	bool is_new_rate = iwl_fw_lookup_cmd_ver(fw, BEACON_TEMPLATE_CMD, 0) > 10;
964  
965  	if (rate_idx <= IWL_FIRST_CCK_RATE)
966  		flags |= is_new_rate ? IWL_MAC_BEACON_CCK
967  			  : IWL_MAC_BEACON_CCK_V1;
968  
969  	return flags;
970  }
971  
iwl_mvm_mac_ctxt_get_beacon_rate(struct iwl_mvm * mvm,struct ieee80211_tx_info * info,struct ieee80211_vif * vif)972  u8 iwl_mvm_mac_ctxt_get_beacon_rate(struct iwl_mvm *mvm,
973  				    struct ieee80211_tx_info *info,
974  				    struct ieee80211_vif *vif)
975  {
976  	struct ieee80211_supported_band *sband =
977  		mvm->hw->wiphy->bands[info->band];
978  	u32 legacy = vif->bss_conf.beacon_tx_rate.control[info->band].legacy;
979  
980  	/* if beacon rate was configured try using it */
981  	if (hweight32(legacy) == 1) {
982  		u32 rate = ffs(legacy) - 1;
983  
984  		return sband->bitrates[rate].hw_value;
985  	}
986  
987  	return iwl_mvm_mac_ctxt_get_lowest_rate(mvm, info, vif);
988  }
989  
iwl_mvm_mac_ctxt_set_tx(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct sk_buff * beacon,struct iwl_tx_cmd * tx)990  static void iwl_mvm_mac_ctxt_set_tx(struct iwl_mvm *mvm,
991  				    struct ieee80211_vif *vif,
992  				    struct sk_buff *beacon,
993  				    struct iwl_tx_cmd *tx)
994  {
995  	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
996  	struct ieee80211_tx_info *info;
997  	u8 rate;
998  	u32 tx_flags;
999  
1000  	info = IEEE80211_SKB_CB(beacon);
1001  
1002  	/* Set up TX command fields */
1003  	tx->len = cpu_to_le16((u16)beacon->len);
1004  	tx->sta_id = mvmvif->deflink.bcast_sta.sta_id;
1005  	tx->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
1006  	tx_flags = TX_CMD_FLG_SEQ_CTL | TX_CMD_FLG_TSF;
1007  	tx_flags |=
1008  		iwl_mvm_bt_coex_tx_prio(mvm, (void *)beacon->data, info, 0) <<
1009  						TX_CMD_FLG_BT_PRIO_POS;
1010  	tx->tx_flags = cpu_to_le32(tx_flags);
1011  
1012  	if (!fw_has_capa(&mvm->fw->ucode_capa,
1013  			 IWL_UCODE_TLV_CAPA_BEACON_ANT_SELECTION)) {
1014  		iwl_mvm_toggle_tx_ant(mvm, &mvm->mgmt_last_antenna_idx);
1015  
1016  		tx->rate_n_flags =
1017  			cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) <<
1018  				    RATE_MCS_ANT_POS);
1019  	}
1020  
1021  	rate = iwl_mvm_mac_ctxt_get_beacon_rate(mvm, info, vif);
1022  
1023  	tx->rate_n_flags |=
1024  		cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(mvm->fw, rate));
1025  	if (rate == IWL_FIRST_CCK_RATE)
1026  		tx->rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK_V1);
1027  
1028  }
1029  
iwl_mvm_mac_ctxt_send_beacon_cmd(struct iwl_mvm * mvm,struct sk_buff * beacon,void * data,int len)1030  int iwl_mvm_mac_ctxt_send_beacon_cmd(struct iwl_mvm *mvm,
1031  				     struct sk_buff *beacon,
1032  				     void *data, int len)
1033  {
1034  	struct iwl_host_cmd cmd = {
1035  		.id = BEACON_TEMPLATE_CMD,
1036  		.flags = CMD_ASYNC,
1037  	};
1038  
1039  	cmd.len[0] = len;
1040  	cmd.data[0] = data;
1041  	cmd.dataflags[0] = 0;
1042  	cmd.len[1] = beacon->len;
1043  	cmd.data[1] = beacon->data;
1044  	cmd.dataflags[1] = IWL_HCMD_DFL_DUP;
1045  
1046  	return iwl_mvm_send_cmd(mvm, &cmd);
1047  }
1048  
iwl_mvm_mac_ctxt_send_beacon_v6(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct sk_buff * beacon)1049  static int iwl_mvm_mac_ctxt_send_beacon_v6(struct iwl_mvm *mvm,
1050  					   struct ieee80211_vif *vif,
1051  					   struct sk_buff *beacon)
1052  {
1053  	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1054  	struct iwl_mac_beacon_cmd_v6 beacon_cmd = {};
1055  
1056  	iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx);
1057  
1058  	beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
1059  
1060  	if (vif->type == NL80211_IFTYPE_AP)
1061  		iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
1062  					 &beacon_cmd.tim_size,
1063  					 beacon->data, beacon->len);
1064  
1065  	return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
1066  						sizeof(beacon_cmd));
1067  }
1068  
iwl_mvm_mac_ctxt_send_beacon_v7(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct sk_buff * beacon)1069  static int iwl_mvm_mac_ctxt_send_beacon_v7(struct iwl_mvm *mvm,
1070  					   struct ieee80211_vif *vif,
1071  					   struct sk_buff *beacon)
1072  {
1073  	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1074  	struct iwl_mac_beacon_cmd_v7 beacon_cmd = {};
1075  
1076  	iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx);
1077  
1078  	beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
1079  
1080  	if (vif->type == NL80211_IFTYPE_AP)
1081  		iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
1082  					 &beacon_cmd.tim_size,
1083  					 beacon->data, beacon->len);
1084  
1085  	beacon_cmd.csa_offset =
1086  		cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
1087  						   WLAN_EID_CHANNEL_SWITCH,
1088  						   beacon->len));
1089  	beacon_cmd.ecsa_offset =
1090  		cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
1091  						   WLAN_EID_EXT_CHANSWITCH_ANN,
1092  						   beacon->len));
1093  
1094  	return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
1095  						sizeof(beacon_cmd));
1096  }
1097  
iwl_mvm_enable_fils(struct iwl_mvm * mvm,struct ieee80211_chanctx_conf * ctx)1098  bool iwl_mvm_enable_fils(struct iwl_mvm *mvm,
1099  			 struct ieee80211_chanctx_conf *ctx)
1100  {
1101  	if (IWL_MVM_DISABLE_AP_FILS)
1102  		return false;
1103  
1104  	if (cfg80211_channel_is_psc(ctx->def.chan))
1105  		return true;
1106  
1107  	return (ctx->def.chan->band == NL80211_BAND_6GHZ &&
1108  		ctx->def.width >= NL80211_CHAN_WIDTH_80);
1109  }
1110  
iwl_mvm_mac_ctxt_send_beacon_v9(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct sk_buff * beacon,struct ieee80211_bss_conf * link_conf)1111  static int iwl_mvm_mac_ctxt_send_beacon_v9(struct iwl_mvm *mvm,
1112  					   struct ieee80211_vif *vif,
1113  					   struct sk_buff *beacon,
1114  					   struct ieee80211_bss_conf *link_conf)
1115  {
1116  	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1117  	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(beacon);
1118  	struct iwl_mac_beacon_cmd beacon_cmd = {};
1119  	u8 rate = iwl_mvm_mac_ctxt_get_beacon_rate(mvm, info, vif);
1120  	u16 flags;
1121  	struct ieee80211_chanctx_conf *ctx;
1122  	int channel;
1123  	flags = iwl_mvm_mac_ctxt_get_beacon_flags(mvm->fw, rate);
1124  
1125  	/* Enable FILS on PSC channels only */
1126  	rcu_read_lock();
1127  	ctx = rcu_dereference(link_conf->chanctx_conf);
1128  	channel = ieee80211_frequency_to_channel(ctx->def.chan->center_freq);
1129  	WARN_ON(channel == 0);
1130  	if (iwl_mvm_enable_fils(mvm, ctx)) {
1131  		flags |= iwl_fw_lookup_cmd_ver(mvm->fw, BEACON_TEMPLATE_CMD,
1132  					       0) > 10 ?
1133  			IWL_MAC_BEACON_FILS :
1134  			IWL_MAC_BEACON_FILS_V1;
1135  		beacon_cmd.short_ssid =
1136  			cpu_to_le32(~crc32_le(~0, vif->cfg.ssid,
1137  					      vif->cfg.ssid_len));
1138  	}
1139  	rcu_read_unlock();
1140  
1141  	beacon_cmd.flags = cpu_to_le16(flags);
1142  	beacon_cmd.byte_cnt = cpu_to_le16((u16)beacon->len);
1143  
1144  	if (WARN_ON(!mvmvif->link[link_conf->link_id]))
1145  		return -EINVAL;
1146  
1147  	if (iwl_fw_lookup_cmd_ver(mvm->fw, BEACON_TEMPLATE_CMD, 0) > 12)
1148  		beacon_cmd.link_id =
1149  			cpu_to_le32(mvmvif->link[link_conf->link_id]->fw_link_id);
1150  	else
1151  		beacon_cmd.link_id = cpu_to_le32((u32)mvmvif->id);
1152  
1153  	if (vif->type == NL80211_IFTYPE_AP)
1154  		iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
1155  					 &beacon_cmd.tim_size,
1156  					 beacon->data, beacon->len);
1157  
1158  	beacon_cmd.csa_offset =
1159  		cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
1160  						   WLAN_EID_CHANNEL_SWITCH,
1161  						   beacon->len));
1162  	beacon_cmd.ecsa_offset =
1163  		cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
1164  						   WLAN_EID_EXT_CHANSWITCH_ANN,
1165  						   beacon->len));
1166  
1167  	if (vif->type == NL80211_IFTYPE_AP &&
1168  	    iwl_fw_lookup_cmd_ver(mvm->fw, BEACON_TEMPLATE_CMD, 0) >= 14)
1169  		beacon_cmd.btwt_offset =
1170  			cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
1171  							   WLAN_EID_S1G_TWT,
1172  							   beacon->len));
1173  
1174  	return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
1175  						sizeof(beacon_cmd));
1176  }
1177  
iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct sk_buff * beacon,struct ieee80211_bss_conf * link_conf)1178  static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm,
1179  					struct ieee80211_vif *vif,
1180  					struct sk_buff *beacon,
1181  					struct ieee80211_bss_conf *link_conf)
1182  {
1183  	if (WARN_ON(!beacon))
1184  		return -EINVAL;
1185  
1186  	if (IWL_MVM_NON_TRANSMITTING_AP)
1187  		return 0;
1188  
1189  	if (!fw_has_capa(&mvm->fw->ucode_capa,
1190  			 IWL_UCODE_TLV_CAPA_CSA_AND_TBTT_OFFLOAD))
1191  		return iwl_mvm_mac_ctxt_send_beacon_v6(mvm, vif, beacon);
1192  
1193  	if (fw_has_api(&mvm->fw->ucode_capa,
1194  		       IWL_UCODE_TLV_API_NEW_BEACON_TEMPLATE))
1195  		return iwl_mvm_mac_ctxt_send_beacon_v9(mvm, vif, beacon,
1196  						       link_conf);
1197  
1198  	return iwl_mvm_mac_ctxt_send_beacon_v7(mvm, vif, beacon);
1199  }
1200  
1201  /* The beacon template for the AP/GO/IBSS has changed and needs update */
iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_bss_conf * link_conf)1202  int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm,
1203  				    struct ieee80211_vif *vif,
1204  				    struct ieee80211_bss_conf *link_conf)
1205  {
1206  	struct sk_buff *beacon;
1207  	int ret;
1208  
1209  	WARN_ON(vif->type != NL80211_IFTYPE_AP &&
1210  		vif->type != NL80211_IFTYPE_ADHOC);
1211  
1212  	beacon = ieee80211_beacon_get_template(mvm->hw, vif, NULL,
1213  					       link_conf->link_id);
1214  	if (!beacon)
1215  		return -ENOMEM;
1216  
1217  #ifdef CONFIG_IWLWIFI_DEBUGFS
1218  	if (mvm->beacon_inject_active) {
1219  		dev_kfree_skb(beacon);
1220  		return -EBUSY;
1221  	}
1222  #endif
1223  
1224  	ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon, link_conf);
1225  	dev_kfree_skb(beacon);
1226  	return ret;
1227  }
1228  
1229  struct iwl_mvm_mac_ap_iterator_data {
1230  	struct iwl_mvm *mvm;
1231  	struct ieee80211_vif *vif;
1232  	u32 beacon_device_ts;
1233  	u16 beacon_int;
1234  };
1235  
1236  /* Find the beacon_device_ts and beacon_int for a managed interface */
iwl_mvm_mac_ap_iterator(void * _data,u8 * mac,struct ieee80211_vif * vif)1237  static void iwl_mvm_mac_ap_iterator(void *_data, u8 *mac,
1238  				    struct ieee80211_vif *vif)
1239  {
1240  	struct iwl_mvm_mac_ap_iterator_data *data = _data;
1241  
1242  	if (vif->type != NL80211_IFTYPE_STATION || !vif->cfg.assoc)
1243  		return;
1244  
1245  	/* Station client has higher priority over P2P client*/
1246  	if (vif->p2p && data->beacon_device_ts)
1247  		return;
1248  
1249  	data->beacon_device_ts = vif->bss_conf.sync_device_ts;
1250  	data->beacon_int = vif->bss_conf.beacon_int;
1251  }
1252  
1253  /*
1254   * Fill the filter flags for mac context of type AP or P2P GO.
1255   */
iwl_mvm_mac_ctxt_cmd_ap_set_filter_flags(struct iwl_mvm * mvm,struct iwl_mvm_vif * mvmvif,__le32 * filter_flags,int accept_probe_req_flag,int accept_beacon_flag)1256  void iwl_mvm_mac_ctxt_cmd_ap_set_filter_flags(struct iwl_mvm *mvm,
1257  					      struct iwl_mvm_vif *mvmvif,
1258  					      __le32 *filter_flags,
1259  					      int accept_probe_req_flag,
1260  					      int accept_beacon_flag)
1261  {
1262  	/*
1263  	 * in AP mode, pass probe requests and beacons from other APs
1264  	 * (needed for ht protection); when there're no any associated
1265  	 * station don't ask FW to pass beacons to prevent unnecessary
1266  	 * wake-ups.
1267  	 */
1268  	*filter_flags |= cpu_to_le32(accept_probe_req_flag);
1269  	if (mvmvif->ap_assoc_sta_count || !mvm->drop_bcn_ap_mode) {
1270  		*filter_flags |= cpu_to_le32(accept_beacon_flag);
1271  		IWL_DEBUG_HC(mvm, "Asking FW to pass beacons\n");
1272  	} else {
1273  		IWL_DEBUG_HC(mvm, "No need to receive beacons\n");
1274  	}
1275  }
1276  
1277  /*
1278   * Fill the specific data for mac context of type AP of P2P GO
1279   */
iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_mac_ctx_cmd * cmd,struct iwl_mac_data_ap * ctxt_ap,bool add)1280  static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm,
1281  					 struct ieee80211_vif *vif,
1282  					 struct iwl_mac_ctx_cmd *cmd,
1283  					 struct iwl_mac_data_ap *ctxt_ap,
1284  					 bool add)
1285  {
1286  	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1287  	struct iwl_mvm_mac_ap_iterator_data data = {
1288  		.mvm = mvm,
1289  		.vif = vif,
1290  		.beacon_device_ts = 0
1291  	};
1292  
1293  	/* in AP mode, the MCAST FIFO takes the EDCA params from VO */
1294  	cmd->ac[IWL_MVM_TX_FIFO_VO].fifos_mask |= BIT(IWL_MVM_TX_FIFO_MCAST);
1295  
1296  	iwl_mvm_mac_ctxt_cmd_ap_set_filter_flags(mvm, mvmvif,
1297  						 &cmd->filter_flags,
1298  						 MAC_FILTER_IN_PROBE_REQUEST,
1299  						 MAC_FILTER_IN_BEACON);
1300  
1301  	ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int);
1302  	ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
1303  					     vif->bss_conf.dtim_period);
1304  
1305  	if (!fw_has_api(&mvm->fw->ucode_capa,
1306  			IWL_UCODE_TLV_API_STA_TYPE))
1307  		ctxt_ap->mcast_qid = cpu_to_le32(mvmvif->deflink.cab_queue);
1308  
1309  	/*
1310  	 * Only set the beacon time when the MAC is being added, when we
1311  	 * just modify the MAC then we should keep the time -- the firmware
1312  	 * can otherwise have a "jumping" TBTT.
1313  	 */
1314  	if (add) {
1315  		/*
1316  		 * If there is a station/P2P client interface which is
1317  		 * associated, set the AP's TBTT far enough from the station's
1318  		 * TBTT. Otherwise, set it to the current system time
1319  		 */
1320  		ieee80211_iterate_active_interfaces_atomic(
1321  			mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
1322  			iwl_mvm_mac_ap_iterator, &data);
1323  
1324  		if (data.beacon_device_ts) {
1325  			u32 rand = get_random_u32_inclusive(36, 63);
1326  			mvmvif->ap_beacon_time = data.beacon_device_ts +
1327  				ieee80211_tu_to_usec(data.beacon_int * rand /
1328  						     100);
1329  		} else {
1330  			mvmvif->ap_beacon_time = iwl_mvm_get_systime(mvm);
1331  		}
1332  	}
1333  
1334  	ctxt_ap->beacon_time = cpu_to_le32(mvmvif->ap_beacon_time);
1335  	ctxt_ap->beacon_tsf = 0; /* unused */
1336  
1337  	/* TODO: Assume that the beacon id == mac context id */
1338  	ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id);
1339  }
1340  
iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u32 action)1341  static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm,
1342  				   struct ieee80211_vif *vif,
1343  				   u32 action)
1344  {
1345  	struct iwl_mac_ctx_cmd cmd = {};
1346  
1347  	WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p);
1348  
1349  	/* Fill the common data for all mac context types */
1350  	iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
1351  
1352  	/* Fill the data specific for ap mode */
1353  	iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.ap,
1354  				     action == FW_CTXT_ACTION_ADD);
1355  
1356  	return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
1357  }
1358  
iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u32 action)1359  static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm,
1360  				   struct ieee80211_vif *vif,
1361  				   u32 action)
1362  {
1363  	struct iwl_mac_ctx_cmd cmd = {};
1364  	struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr;
1365  
1366  	WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p);
1367  
1368  	/* Fill the common data for all mac context types */
1369  	iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
1370  
1371  	/* Fill the data specific for GO mode */
1372  	iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.go.ap,
1373  				     action == FW_CTXT_ACTION_ADD);
1374  
1375  	cmd.go.ctwin = cpu_to_le32(noa->oppps_ctwindow &
1376  					IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
1377  	cmd.go.opp_ps_enabled =
1378  			cpu_to_le32(!!(noa->oppps_ctwindow &
1379  					IEEE80211_P2P_OPPPS_ENABLE_BIT));
1380  
1381  	return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
1382  }
1383  
iwl_mvm_mac_ctx_send(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u32 action,bool force_assoc_off,const u8 * bssid_override)1384  static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1385  				u32 action, bool force_assoc_off,
1386  				const u8 *bssid_override)
1387  {
1388  	switch (vif->type) {
1389  	case NL80211_IFTYPE_STATION:
1390  		return iwl_mvm_mac_ctxt_cmd_sta(mvm, vif, action,
1391  						force_assoc_off,
1392  						bssid_override);
1393  	case NL80211_IFTYPE_AP:
1394  		if (!vif->p2p)
1395  			return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action);
1396  		else
1397  			return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action);
1398  	case NL80211_IFTYPE_MONITOR:
1399  		return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action);
1400  	case NL80211_IFTYPE_P2P_DEVICE:
1401  		return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action);
1402  	case NL80211_IFTYPE_ADHOC:
1403  		return iwl_mvm_mac_ctxt_cmd_ibss(mvm, vif, action);
1404  	default:
1405  		break;
1406  	}
1407  
1408  	return -EOPNOTSUPP;
1409  }
1410  
iwl_mvm_mac_ctxt_add(struct iwl_mvm * mvm,struct ieee80211_vif * vif)1411  int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1412  {
1413  	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1414  	int ret;
1415  
1416  	if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n",
1417  		      vif->addr, ieee80211_vif_type_p2p(vif)))
1418  		return -EIO;
1419  
1420  	ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD,
1421  				   true, NULL);
1422  	if (ret)
1423  		return ret;
1424  
1425  	/* will only do anything at resume from D3 time */
1426  	iwl_mvm_set_last_nonqos_seq(mvm, vif);
1427  
1428  	mvmvif->uploaded = true;
1429  	return 0;
1430  }
1431  
iwl_mvm_mac_ctxt_changed(struct iwl_mvm * mvm,struct ieee80211_vif * vif,bool force_assoc_off,const u8 * bssid_override)1432  int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1433  			     bool force_assoc_off, const u8 *bssid_override)
1434  {
1435  	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1436  
1437  	if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n",
1438  		      vif->addr, ieee80211_vif_type_p2p(vif)))
1439  		return -EIO;
1440  
1441  	return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY,
1442  				    force_assoc_off, bssid_override);
1443  }
1444  
iwl_mvm_mac_ctxt_remove(struct iwl_mvm * mvm,struct ieee80211_vif * vif)1445  int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1446  {
1447  	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1448  	struct iwl_mac_ctx_cmd cmd;
1449  	int ret;
1450  
1451  	if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n",
1452  		      vif->addr, ieee80211_vif_type_p2p(vif)))
1453  		return -EIO;
1454  
1455  	memset(&cmd, 0, sizeof(cmd));
1456  
1457  	cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
1458  							   mvmvif->color));
1459  	cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE);
1460  
1461  	ret = iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
1462  	if (ret)
1463  		return ret;
1464  
1465  	mvmvif->uploaded = false;
1466  
1467  	if (vif->type == NL80211_IFTYPE_MONITOR) {
1468  		__clear_bit(IEEE80211_HW_RX_INCLUDES_FCS, mvm->hw->flags);
1469  		iwl_mvm_dealloc_snif_sta(mvm);
1470  	}
1471  
1472  	return 0;
1473  }
1474  
iwl_mvm_csa_count_down(struct iwl_mvm * mvm,struct ieee80211_vif * csa_vif,u32 gp2,bool tx_success)1475  static void iwl_mvm_csa_count_down(struct iwl_mvm *mvm,
1476  				   struct ieee80211_vif *csa_vif, u32 gp2,
1477  				   bool tx_success)
1478  {
1479  	struct iwl_mvm_vif *mvmvif =
1480  			iwl_mvm_vif_from_mac80211(csa_vif);
1481  
1482  	/* Don't start to countdown from a failed beacon */
1483  	if (!tx_success && !mvmvif->csa_countdown)
1484  		return;
1485  
1486  	mvmvif->csa_countdown = true;
1487  
1488  	if (!ieee80211_beacon_cntdwn_is_complete(csa_vif, 0)) {
1489  		int c = ieee80211_beacon_update_cntdwn(csa_vif, 0);
1490  
1491  		iwl_mvm_mac_ctxt_beacon_changed(mvm, csa_vif,
1492  						&csa_vif->bss_conf);
1493  		if (csa_vif->p2p &&
1494  		    !iwl_mvm_te_scheduled(&mvmvif->time_event_data) && gp2 &&
1495  		    tx_success) {
1496  			u32 rel_time = (c + 1) *
1497  				       csa_vif->bss_conf.beacon_int -
1498  				       IWL_MVM_CHANNEL_SWITCH_TIME_GO;
1499  			u32 apply_time = gp2 + rel_time * 1024;
1500  
1501  			iwl_mvm_schedule_csa_period(mvm, csa_vif,
1502  					 IWL_MVM_CHANNEL_SWITCH_TIME_GO -
1503  					 IWL_MVM_CHANNEL_SWITCH_MARGIN,
1504  					 apply_time);
1505  		}
1506  	} else if (!iwl_mvm_te_scheduled(&mvmvif->time_event_data)) {
1507  		/* we don't have CSA NoA scheduled yet, switch now */
1508  		ieee80211_csa_finish(csa_vif, 0);
1509  		RCU_INIT_POINTER(mvm->csa_vif, NULL);
1510  	}
1511  }
1512  
iwl_mvm_rx_beacon_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1513  void iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm,
1514  			     struct iwl_rx_cmd_buffer *rxb)
1515  {
1516  	struct iwl_rx_packet *pkt = rxb_addr(rxb);
1517  	unsigned int pkt_len = iwl_rx_packet_payload_len(pkt);
1518  	struct iwl_extended_beacon_notif *beacon = (void *)pkt->data;
1519  	struct iwl_extended_beacon_notif_v5 *beacon_v5 = (void *)pkt->data;
1520  	struct ieee80211_vif *csa_vif;
1521  	struct ieee80211_vif *tx_blocked_vif;
1522  	struct agg_tx_status *agg_status;
1523  	u16 status;
1524  
1525  	lockdep_assert_held(&mvm->mutex);
1526  
1527  	mvm->ap_last_beacon_gp2 = le32_to_cpu(beacon->gp2);
1528  
1529  	if (!iwl_mvm_is_short_beacon_notif_supported(mvm)) {
1530  		struct iwl_tx_resp *beacon_notify_hdr =
1531  			&beacon_v5->beacon_notify_hdr;
1532  
1533  		if (unlikely(pkt_len < sizeof(*beacon_v5)))
1534  			return;
1535  
1536  		mvm->ibss_manager = beacon_v5->ibss_mgr_status != 0;
1537  		agg_status = iwl_mvm_get_agg_status(mvm, beacon_notify_hdr);
1538  		status = le16_to_cpu(agg_status->status) & TX_STATUS_MSK;
1539  		IWL_DEBUG_RX(mvm,
1540  			     "beacon status %#x retries:%d tsf:0x%016llX gp2:0x%X rate:%d\n",
1541  			     status, beacon_notify_hdr->failure_frame,
1542  			     le64_to_cpu(beacon->tsf),
1543  			     mvm->ap_last_beacon_gp2,
1544  			     le32_to_cpu(beacon_notify_hdr->initial_rate));
1545  	} else {
1546  		if (unlikely(pkt_len < sizeof(*beacon)))
1547  			return;
1548  
1549  		mvm->ibss_manager = beacon->ibss_mgr_status != 0;
1550  		status = le32_to_cpu(beacon->status) & TX_STATUS_MSK;
1551  		IWL_DEBUG_RX(mvm,
1552  			     "beacon status %#x tsf:0x%016llX gp2:0x%X\n",
1553  			     status, le64_to_cpu(beacon->tsf),
1554  			     mvm->ap_last_beacon_gp2);
1555  	}
1556  
1557  	csa_vif = rcu_dereference_protected(mvm->csa_vif,
1558  					    lockdep_is_held(&mvm->mutex));
1559  	if (unlikely(csa_vif && csa_vif->bss_conf.csa_active))
1560  		iwl_mvm_csa_count_down(mvm, csa_vif, mvm->ap_last_beacon_gp2,
1561  				       (status == TX_STATUS_SUCCESS));
1562  
1563  	tx_blocked_vif = rcu_dereference_protected(mvm->csa_tx_blocked_vif,
1564  						lockdep_is_held(&mvm->mutex));
1565  	if (unlikely(tx_blocked_vif)) {
1566  		struct iwl_mvm_vif *mvmvif =
1567  			iwl_mvm_vif_from_mac80211(tx_blocked_vif);
1568  
1569  		/*
1570  		 * The channel switch is started and we have blocked the
1571  		 * stations. If this is the first beacon (the timeout wasn't
1572  		 * set), set the unblock timeout, otherwise countdown
1573  		 */
1574  		if (!mvm->csa_tx_block_bcn_timeout)
1575  			mvm->csa_tx_block_bcn_timeout =
1576  				IWL_MVM_CS_UNBLOCK_TX_TIMEOUT;
1577  		else
1578  			mvm->csa_tx_block_bcn_timeout--;
1579  
1580  		/* Check if the timeout is expired, and unblock tx */
1581  		if (mvm->csa_tx_block_bcn_timeout == 0) {
1582  			iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
1583  			RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
1584  		}
1585  	}
1586  }
1587  
1588  static void
iwl_mvm_handle_missed_beacons_notif(struct iwl_mvm * mvm,const struct iwl_missed_beacons_notif * mb,struct iwl_rx_packet * pkt)1589  iwl_mvm_handle_missed_beacons_notif(struct iwl_mvm *mvm,
1590  				    const struct iwl_missed_beacons_notif *mb,
1591  				    struct iwl_rx_packet *pkt)
1592  {
1593  	struct iwl_fw_dbg_trigger_missed_bcon *bcon_trig;
1594  	struct iwl_fw_dbg_trigger_tlv *trigger;
1595  	u32 stop_trig_missed_bcon, stop_trig_missed_bcon_since_rx;
1596  	u32 rx_missed_bcon, rx_missed_bcon_since_rx;
1597  	struct ieee80211_vif *vif;
1598  	/* Id can be mac/link id depending on the notification version */
1599  	u32 id = le32_to_cpu(mb->link_id);
1600  	union iwl_dbg_tlv_tp_data tp_data = { .fw_pkt = pkt };
1601  	u32 mac_type;
1602  	int link_id = -1;
1603  	u8 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
1604  					       MISSED_BEACONS_NOTIFICATION,
1605  					       0);
1606  	u8 new_notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, MAC_CONF_GROUP,
1607  						   MISSED_BEACONS_NOTIF, 0);
1608  
1609  	/* If the firmware uses the new notification (from MAC_CONF_GROUP),
1610  	 * refer to that notification's version.
1611  	 * Note that the new notification from MAC_CONF_GROUP starts from
1612  	 * version 5.
1613  	 */
1614  	if (new_notif_ver)
1615  		notif_ver = new_notif_ver;
1616  
1617  	/* before version four the ID in the notification refers to mac ID */
1618  	if (notif_ver < 4) {
1619  		vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, false);
1620  	} else {
1621  		struct ieee80211_bss_conf *bss_conf =
1622  			iwl_mvm_rcu_fw_link_id_to_link_conf(mvm, id, false);
1623  
1624  		if (!bss_conf)
1625  			return;
1626  
1627  		vif = bss_conf->vif;
1628  		link_id = bss_conf->link_id;
1629  	}
1630  
1631  	IWL_DEBUG_INFO(mvm,
1632  		       "missed bcn %s_id=%u, consecutive=%u (%u)\n",
1633  		       notif_ver < 4 ? "mac" : "link",
1634  		       id,
1635  		       le32_to_cpu(mb->consec_missed_beacons),
1636  		       le32_to_cpu(mb->consec_missed_beacons_since_last_rx));
1637  
1638  	if (!vif)
1639  		return;
1640  
1641  	mac_type = iwl_mvm_get_mac_type(vif);
1642  
1643  	IWL_DEBUG_INFO(mvm, "missed beacon mac_type=%u,\n", mac_type);
1644  
1645  	mvm->trans->dbg.dump_file_name_ext_valid = true;
1646  	snprintf(mvm->trans->dbg.dump_file_name_ext, IWL_FW_INI_MAX_NAME,
1647  		 "MacId_%d_MacType_%d", id, mac_type);
1648  
1649  	rx_missed_bcon = le32_to_cpu(mb->consec_missed_beacons);
1650  	rx_missed_bcon_since_rx =
1651  		le32_to_cpu(mb->consec_missed_beacons_since_last_rx);
1652  	/*
1653  	 * TODO: the threshold should be adjusted based on latency conditions,
1654  	 * and/or in case of a CS flow on one of the other AP vifs.
1655  	 */
1656  	if (rx_missed_bcon >= IWL_MVM_MISSED_BEACONS_THRESHOLD_LONG) {
1657  		if (rx_missed_bcon_since_rx >= IWL_MVM_MISSED_BEACONS_SINCE_RX_THOLD) {
1658  			iwl_mvm_connection_loss(mvm, vif, "missed beacons");
1659  		} else {
1660  			IWL_WARN(mvm,
1661  				 "missed beacons exceeds threshold, but receiving data. Stay connected, Expect bugs.\n");
1662  			IWL_WARN(mvm,
1663  				 "missed_beacons:%d, missed_beacons_since_rx:%d\n",
1664  				 rx_missed_bcon, rx_missed_bcon_since_rx);
1665  		}
1666  	} else if (link_id >= 0 && hweight16(vif->active_links) > 1) {
1667  		u32 scnd_lnk_bcn_lost = 0;
1668  
1669  		if (notif_ver >= 5 &&
1670  		    !IWL_FW_CHECK(mvm,
1671  				  le32_to_cpu(mb->other_link_id) == IWL_MVM_FW_LINK_ID_INVALID,
1672  				  "No data for other link id but we are in EMLSR active_links: 0x%x\n",
1673  				  vif->active_links))
1674  			scnd_lnk_bcn_lost =
1675  				le32_to_cpu(mb->consec_missed_beacons_other_link);
1676  
1677  		/* Exit EMLSR if we lost more than
1678  		 * IWL_MVM_MISSED_BEACONS_EXIT_ESR_THRESH beacons on boths links
1679  		 * OR more than IWL_MVM_BCN_LOSS_EXIT_ESR_THRESH on any link.
1680  		 */
1681  		if ((rx_missed_bcon >= IWL_MVM_BCN_LOSS_EXIT_ESR_THRESH_2_LINKS &&
1682  		     scnd_lnk_bcn_lost >= IWL_MVM_BCN_LOSS_EXIT_ESR_THRESH_2_LINKS) ||
1683  		    rx_missed_bcon >= IWL_MVM_BCN_LOSS_EXIT_ESR_THRESH)
1684  			iwl_mvm_exit_esr(mvm, vif,
1685  					 IWL_MVM_ESR_EXIT_MISSED_BEACON,
1686  					 iwl_mvm_get_primary_link(vif));
1687  	} else if (rx_missed_bcon_since_rx > IWL_MVM_MISSED_BEACONS_THRESHOLD) {
1688  		if (!iwl_mvm_has_new_tx_api(mvm))
1689  			ieee80211_beacon_loss(vif);
1690  		else
1691  			ieee80211_cqm_beacon_loss_notify(vif, GFP_ATOMIC);
1692  	}
1693  
1694  	iwl_dbg_tlv_time_point(&mvm->fwrt,
1695  			       IWL_FW_INI_TIME_POINT_MISSED_BEACONS, &tp_data);
1696  
1697  	trigger = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
1698  					FW_DBG_TRIGGER_MISSED_BEACONS);
1699  	if (!trigger)
1700  		return;
1701  
1702  	bcon_trig = (void *)trigger->data;
1703  	stop_trig_missed_bcon = le32_to_cpu(bcon_trig->stop_consec_missed_bcon);
1704  	stop_trig_missed_bcon_since_rx =
1705  		le32_to_cpu(bcon_trig->stop_consec_missed_bcon_since_rx);
1706  
1707  	/* TODO: implement start trigger */
1708  
1709  	if (rx_missed_bcon_since_rx >= stop_trig_missed_bcon_since_rx ||
1710  	    rx_missed_bcon >= stop_trig_missed_bcon)
1711  		iwl_fw_dbg_collect_trig(&mvm->fwrt, trigger, NULL);
1712  }
1713  
iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1714  void iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm *mvm,
1715  				     struct iwl_rx_cmd_buffer *rxb)
1716  {
1717  	struct iwl_rx_packet *pkt = rxb_addr(rxb);
1718  
1719  	iwl_mvm_handle_missed_beacons_notif(mvm, (const void *)pkt->data, pkt);
1720  }
1721  
iwl_mvm_rx_missed_beacons_notif_legacy(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1722  void iwl_mvm_rx_missed_beacons_notif_legacy(struct iwl_mvm *mvm,
1723  					    struct iwl_rx_cmd_buffer *rxb)
1724  {
1725  	struct iwl_rx_packet *pkt = rxb_addr(rxb);
1726  	const struct iwl_missed_beacons_notif_v4 *mb_v4 =
1727  		(const void *)pkt->data;
1728  	struct iwl_missed_beacons_notif mb = {
1729  		.link_id = mb_v4->link_id,
1730  		.consec_missed_beacons = mb_v4->consec_missed_beacons,
1731  		.consec_missed_beacons_since_last_rx =
1732  			mb_v4->consec_missed_beacons_since_last_rx,
1733  		.other_link_id = cpu_to_le32(IWL_MVM_FW_LINK_ID_INVALID),
1734  	};
1735  
1736  	iwl_mvm_handle_missed_beacons_notif(mvm, &mb, pkt);
1737  }
1738  
iwl_mvm_rx_stored_beacon_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1739  void iwl_mvm_rx_stored_beacon_notif(struct iwl_mvm *mvm,
1740  				    struct iwl_rx_cmd_buffer *rxb)
1741  {
1742  	struct iwl_rx_packet *pkt = rxb_addr(rxb);
1743  	unsigned int pkt_len = iwl_rx_packet_payload_len(pkt);
1744  	struct iwl_stored_beacon_notif_common *sb = (void *)pkt->data;
1745  	struct ieee80211_rx_status rx_status;
1746  	struct sk_buff *skb;
1747  	u8 *data;
1748  	u32 size = le32_to_cpu(sb->byte_count);
1749  	int ver = iwl_fw_lookup_cmd_ver(mvm->fw,
1750  					WIDE_ID(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF),
1751  					0);
1752  
1753  	if (size == 0)
1754  		return;
1755  
1756  	/* handle per-version differences */
1757  	if (ver <= 2) {
1758  		struct iwl_stored_beacon_notif_v2 *sb_v2 = (void *)pkt->data;
1759  
1760  		if (pkt_len < struct_size(sb_v2, data, size))
1761  			return;
1762  
1763  		data = sb_v2->data;
1764  	} else {
1765  		struct iwl_stored_beacon_notif_v3 *sb_v3 = (void *)pkt->data;
1766  
1767  		if (pkt_len < struct_size(sb_v3, data, size))
1768  			return;
1769  
1770  		data = sb_v3->data;
1771  	}
1772  
1773  	skb = alloc_skb(size, GFP_ATOMIC);
1774  	if (!skb) {
1775  		IWL_ERR(mvm, "alloc_skb failed\n");
1776  		return;
1777  	}
1778  
1779  	/* update rx_status according to the notification's metadata */
1780  	memset(&rx_status, 0, sizeof(rx_status));
1781  	rx_status.mactime = le64_to_cpu(sb->tsf);
1782  	/* TSF as indicated by the firmware  is at INA time */
1783  	rx_status.flag |= RX_FLAG_MACTIME_PLCP_START;
1784  	rx_status.device_timestamp = le32_to_cpu(sb->system_time);
1785  	rx_status.band =
1786  		(sb->band & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ?
1787  				NL80211_BAND_2GHZ : NL80211_BAND_5GHZ;
1788  	rx_status.freq =
1789  		ieee80211_channel_to_frequency(le16_to_cpu(sb->channel),
1790  					       rx_status.band);
1791  
1792  	/* copy the data */
1793  	skb_put_data(skb, data, size);
1794  	memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
1795  
1796  	/* pass it as regular rx to mac80211 */
1797  	ieee80211_rx_napi(mvm->hw, NULL, skb, NULL);
1798  }
1799  
iwl_mvm_probe_resp_data_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1800  void iwl_mvm_probe_resp_data_notif(struct iwl_mvm *mvm,
1801  				   struct iwl_rx_cmd_buffer *rxb)
1802  {
1803  	struct iwl_rx_packet *pkt = rxb_addr(rxb);
1804  	struct iwl_probe_resp_data_notif *notif = (void *)pkt->data;
1805  	struct iwl_probe_resp_data *old_data, *new_data;
1806  	u32 id = le32_to_cpu(notif->mac_id);
1807  	struct ieee80211_vif *vif;
1808  	struct iwl_mvm_vif *mvmvif;
1809  
1810  	IWL_DEBUG_INFO(mvm, "Probe response data notif: noa %d, csa %d\n",
1811  		       notif->noa_active, notif->csa_counter);
1812  
1813  	vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, false);
1814  	if (!vif)
1815  		return;
1816  
1817  	mvmvif = iwl_mvm_vif_from_mac80211(vif);
1818  
1819  	new_data = kzalloc(sizeof(*new_data), GFP_KERNEL);
1820  	if (!new_data)
1821  		return;
1822  
1823  	memcpy(&new_data->notif, notif, sizeof(new_data->notif));
1824  
1825  	/* noa_attr contains 1 reserved byte, need to substruct it */
1826  	new_data->noa_len = sizeof(struct ieee80211_vendor_ie) +
1827  			    sizeof(new_data->notif.noa_attr) - 1;
1828  
1829  	/*
1830  	 * If it's a one time NoA, only one descriptor is needed,
1831  	 * adjust the length according to len_low.
1832  	 */
1833  	if (new_data->notif.noa_attr.len_low ==
1834  	    sizeof(struct ieee80211_p2p_noa_desc) + 2)
1835  		new_data->noa_len -= sizeof(struct ieee80211_p2p_noa_desc);
1836  
1837  	old_data = rcu_dereference_protected(mvmvif->deflink.probe_resp_data,
1838  					     lockdep_is_held(&mvmvif->mvm->mutex));
1839  	rcu_assign_pointer(mvmvif->deflink.probe_resp_data, new_data);
1840  
1841  	if (old_data)
1842  		kfree_rcu(old_data, rcu_head);
1843  
1844  	if (notif->csa_counter != IWL_PROBE_RESP_DATA_NO_CSA &&
1845  	    notif->csa_counter >= 1)
1846  		ieee80211_beacon_set_cntdwn(vif, notif->csa_counter);
1847  }
1848  
iwl_mvm_channel_switch_start_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1849  void iwl_mvm_channel_switch_start_notif(struct iwl_mvm *mvm,
1850  					struct iwl_rx_cmd_buffer *rxb)
1851  {
1852  	struct iwl_rx_packet *pkt = rxb_addr(rxb);
1853  	struct ieee80211_vif *csa_vif, *vif;
1854  	struct iwl_mvm_vif *mvmvif, *csa_mvmvif;
1855  	u32 id_n_color, csa_id;
1856  	/* save mac_id or link_id to use later to cancel csa if needed */
1857  	u32 id;
1858  	u32 mac_link_id = 0;
1859  	u8 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, MAC_CONF_GROUP,
1860  					       CHANNEL_SWITCH_START_NOTIF, 0);
1861  	bool csa_active;
1862  
1863  	rcu_read_lock();
1864  
1865  	if (notif_ver < 3) {
1866  		struct iwl_channel_switch_start_notif_v1 *notif = (void *)pkt->data;
1867  		u32 mac_id;
1868  
1869  		id_n_color = le32_to_cpu(notif->id_and_color);
1870  		mac_id = id_n_color & FW_CTXT_ID_MSK;
1871  
1872  		vif = iwl_mvm_rcu_dereference_vif_id(mvm, mac_id, true);
1873  		if (!vif)
1874  			goto out_unlock;
1875  
1876  		id = mac_id;
1877  		csa_active = vif->bss_conf.csa_active;
1878  	} else {
1879  		struct iwl_channel_switch_start_notif *notif = (void *)pkt->data;
1880  		u32 link_id = le32_to_cpu(notif->link_id);
1881  		struct ieee80211_bss_conf *bss_conf =
1882  			iwl_mvm_rcu_fw_link_id_to_link_conf(mvm, link_id, true);
1883  
1884  		if (!bss_conf)
1885  			goto out_unlock;
1886  
1887  		id = link_id;
1888  		mac_link_id = bss_conf->link_id;
1889  		vif = bss_conf->vif;
1890  		csa_active = bss_conf->csa_active;
1891  	}
1892  
1893  	mvmvif = iwl_mvm_vif_from_mac80211(vif);
1894  	if (notif_ver >= 3)
1895  		id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color);
1896  
1897  	switch (vif->type) {
1898  	case NL80211_IFTYPE_AP:
1899  		csa_vif = rcu_dereference(mvm->csa_vif);
1900  		if (WARN_ON(!csa_vif || !csa_vif->bss_conf.csa_active ||
1901  			    csa_vif != vif))
1902  			goto out_unlock;
1903  
1904  		csa_mvmvif = iwl_mvm_vif_from_mac80211(csa_vif);
1905  		csa_id = FW_CMD_ID_AND_COLOR(csa_mvmvif->id, csa_mvmvif->color);
1906  		if (WARN(csa_id != id_n_color,
1907  			 "channel switch noa notification on unexpected vif (csa_vif=%d, notif=%d)",
1908  			 csa_id, id_n_color))
1909  			goto out_unlock;
1910  
1911  		IWL_DEBUG_INFO(mvm, "Channel Switch Started Notification\n");
1912  
1913  		schedule_delayed_work(&mvm->cs_tx_unblock_dwork,
1914  				      msecs_to_jiffies(IWL_MVM_CS_UNBLOCK_TX_TIMEOUT *
1915  						       csa_vif->bss_conf.beacon_int));
1916  
1917  		ieee80211_csa_finish(csa_vif, 0);
1918  
1919  		rcu_read_unlock();
1920  
1921  		RCU_INIT_POINTER(mvm->csa_vif, NULL);
1922  		return;
1923  	case NL80211_IFTYPE_STATION:
1924  		/*
1925  		 * if we don't know about an ongoing channel switch,
1926  		 * make sure FW cancels it
1927  		 */
1928  		if (iwl_fw_lookup_notif_ver(mvm->fw, MAC_CONF_GROUP,
1929  					    CHANNEL_SWITCH_ERROR_NOTIF,
1930  					    0) && !csa_active) {
1931  			IWL_DEBUG_INFO(mvm, "Channel Switch was canceled\n");
1932  			iwl_mvm_cancel_channel_switch(mvm, vif, id);
1933  			break;
1934  		}
1935  
1936  		iwl_mvm_csa_client_absent(mvm, vif);
1937  		cancel_delayed_work(&mvmvif->csa_work);
1938  		ieee80211_chswitch_done(vif, true, mac_link_id);
1939  		break;
1940  	default:
1941  		/* should never happen */
1942  		WARN_ON_ONCE(1);
1943  		break;
1944  	}
1945  out_unlock:
1946  	rcu_read_unlock();
1947  }
1948  
iwl_mvm_channel_switch_error_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1949  void iwl_mvm_channel_switch_error_notif(struct iwl_mvm *mvm,
1950  					struct iwl_rx_cmd_buffer *rxb)
1951  {
1952  	struct iwl_rx_packet *pkt = rxb_addr(rxb);
1953  	struct iwl_channel_switch_error_notif *notif = (void *)pkt->data;
1954  	struct ieee80211_vif *vif;
1955  	u32 id = le32_to_cpu(notif->link_id);
1956  	u32 csa_err_mask = le32_to_cpu(notif->csa_err_mask);
1957  
1958  	rcu_read_lock();
1959  	vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true);
1960  	if (!vif) {
1961  		rcu_read_unlock();
1962  		return;
1963  	}
1964  
1965  	IWL_DEBUG_INFO(mvm, "FW reports CSA error: id=%u, csa_err_mask=%u\n",
1966  		       id, csa_err_mask);
1967  	if (csa_err_mask & (CS_ERR_COUNT_ERROR |
1968  			    CS_ERR_LONG_DELAY_AFTER_CS |
1969  			    CS_ERR_TX_BLOCK_TIMER_EXPIRED))
1970  		ieee80211_channel_switch_disconnect(vif, true);
1971  	rcu_read_unlock();
1972  }
1973  
iwl_mvm_rx_missed_vap_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1974  void iwl_mvm_rx_missed_vap_notif(struct iwl_mvm *mvm,
1975  				 struct iwl_rx_cmd_buffer *rxb)
1976  {
1977  	struct iwl_rx_packet *pkt = rxb_addr(rxb);
1978  	struct iwl_missed_vap_notif *mb = (void *)pkt->data;
1979  	struct ieee80211_vif *vif;
1980  	u32 id = le32_to_cpu(mb->mac_id);
1981  
1982  	IWL_DEBUG_INFO(mvm,
1983  		       "missed_vap notify mac_id=%u, num_beacon_intervals_elapsed=%u, profile_periodicity=%u\n",
1984  		       le32_to_cpu(mb->mac_id),
1985  		       mb->num_beacon_intervals_elapsed,
1986  		       mb->profile_periodicity);
1987  
1988  	rcu_read_lock();
1989  
1990  	vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true);
1991  	if (vif)
1992  		iwl_mvm_connection_loss(mvm, vif, "missed vap beacon");
1993  
1994  	rcu_read_unlock();
1995  }
1996