1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /*
3  * Copyright (C) 2012-2014, 2018-2023 Intel Corporation
4  * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
5  * Copyright (C) 2016-2017 Intel Deutschland GmbH
6  */
7 #include <linux/etherdevice.h>
8 #include <linux/ip.h>
9 #include <linux/fs.h>
10 #include <net/cfg80211.h>
11 #include <net/ipv6.h>
12 #include <net/tcp.h>
13 #include <net/addrconf.h>
14 #include "iwl-modparams.h"
15 #include "fw-api.h"
16 #include "mvm.h"
17 #include "fw/img.h"
18 
19 void iwl_mvm_set_rekey_data(struct ieee80211_hw *hw,
20 			    struct ieee80211_vif *vif,
21 			    struct cfg80211_gtk_rekey_data *data)
22 {
23 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
24 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
25 
26 	mutex_lock(&mvm->mutex);
27 
28 	mvmvif->rekey_data.kek_len = data->kek_len;
29 	mvmvif->rekey_data.kck_len = data->kck_len;
30 	memcpy(mvmvif->rekey_data.kek, data->kek, data->kek_len);
31 	memcpy(mvmvif->rekey_data.kck, data->kck, data->kck_len);
32 	mvmvif->rekey_data.akm = data->akm & 0xFF;
33 	mvmvif->rekey_data.replay_ctr =
34 		cpu_to_le64(be64_to_cpup((const __be64 *)data->replay_ctr));
35 	mvmvif->rekey_data.valid = true;
36 
37 	mutex_unlock(&mvm->mutex);
38 }
39 
40 #if IS_ENABLED(CONFIG_IPV6)
41 void iwl_mvm_ipv6_addr_change(struct ieee80211_hw *hw,
42 			      struct ieee80211_vif *vif,
43 			      struct inet6_dev *idev)
44 {
45 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
46 	struct inet6_ifaddr *ifa;
47 	int idx = 0;
48 
49 	memset(mvmvif->tentative_addrs, 0, sizeof(mvmvif->tentative_addrs));
50 
51 	read_lock_bh(&idev->lock);
52 	list_for_each_entry(ifa, &idev->addr_list, if_list) {
53 		mvmvif->target_ipv6_addrs[idx] = ifa->addr;
54 		if (ifa->flags & IFA_F_TENTATIVE)
55 			__set_bit(idx, mvmvif->tentative_addrs);
56 		idx++;
57 		if (idx >= IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_MAX)
58 			break;
59 	}
60 	read_unlock_bh(&idev->lock);
61 
62 	mvmvif->num_target_ipv6_addrs = idx;
63 }
64 #endif
65 
66 void iwl_mvm_set_default_unicast_key(struct ieee80211_hw *hw,
67 				     struct ieee80211_vif *vif, int idx)
68 {
69 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
70 
71 	mvmvif->tx_key_idx = idx;
72 }
73 
74 static void iwl_mvm_convert_p1k(u16 *p1k, __le16 *out)
75 {
76 	int i;
77 
78 	for (i = 0; i < IWL_P1K_SIZE; i++)
79 		out[i] = cpu_to_le16(p1k[i]);
80 }
81 
82 static const u8 *iwl_mvm_find_max_pn(struct ieee80211_key_conf *key,
83 				     struct iwl_mvm_key_pn *ptk_pn,
84 				     struct ieee80211_key_seq *seq,
85 				     int tid, int queues)
86 {
87 	const u8 *ret = seq->ccmp.pn;
88 	int i;
89 
90 	/* get the PN from mac80211, used on the default queue */
91 	ieee80211_get_key_rx_seq(key, tid, seq);
92 
93 	/* and use the internal data for the other queues */
94 	for (i = 1; i < queues; i++) {
95 		const u8 *tmp = ptk_pn->q[i].pn[tid];
96 
97 		if (memcmp(ret, tmp, IEEE80211_CCMP_PN_LEN) <= 0)
98 			ret = tmp;
99 	}
100 
101 	return ret;
102 }
103 
104 struct wowlan_key_reprogram_data {
105 	bool error;
106 	int wep_key_idx;
107 };
108 
109 static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw,
110 					struct ieee80211_vif *vif,
111 					struct ieee80211_sta *sta,
112 					struct ieee80211_key_conf *key,
113 					void *_data)
114 {
115 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
116 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
117 	struct wowlan_key_reprogram_data *data = _data;
118 	int ret;
119 
120 	switch (key->cipher) {
121 	case WLAN_CIPHER_SUITE_WEP40:
122 	case WLAN_CIPHER_SUITE_WEP104: { /* hack it for now */
123 		struct {
124 			struct iwl_mvm_wep_key_cmd wep_key_cmd;
125 			struct iwl_mvm_wep_key wep_key;
126 		} __packed wkc = {
127 			.wep_key_cmd.mac_id_n_color =
128 				cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
129 								mvmvif->color)),
130 			.wep_key_cmd.num_keys = 1,
131 			/* firmware sets STA_KEY_FLG_WEP_13BYTES */
132 			.wep_key_cmd.decryption_type = STA_KEY_FLG_WEP,
133 			.wep_key.key_index = key->keyidx,
134 			.wep_key.key_size = key->keylen,
135 		};
136 
137 		/*
138 		 * This will fail -- the key functions don't set support
139 		 * pairwise WEP keys. However, that's better than silently
140 		 * failing WoWLAN. Or maybe not?
141 		 */
142 		if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
143 			break;
144 
145 		memcpy(&wkc.wep_key.key[3], key->key, key->keylen);
146 		if (key->keyidx == mvmvif->tx_key_idx) {
147 			/* TX key must be at offset 0 */
148 			wkc.wep_key.key_offset = 0;
149 		} else {
150 			/* others start at 1 */
151 			data->wep_key_idx++;
152 			wkc.wep_key.key_offset = data->wep_key_idx;
153 		}
154 
155 		mutex_lock(&mvm->mutex);
156 		ret = iwl_mvm_send_cmd_pdu(mvm, WEP_KEY, 0, sizeof(wkc), &wkc);
157 		data->error = ret != 0;
158 
159 		mvm->ptk_ivlen = key->iv_len;
160 		mvm->ptk_icvlen = key->icv_len;
161 		mvm->gtk_ivlen = key->iv_len;
162 		mvm->gtk_icvlen = key->icv_len;
163 		mutex_unlock(&mvm->mutex);
164 
165 		/* don't upload key again */
166 		return;
167 	}
168 	default:
169 		data->error = true;
170 		return;
171 	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
172 	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
173 		return;
174 	case WLAN_CIPHER_SUITE_AES_CMAC:
175 		/*
176 		 * Ignore CMAC keys -- the WoWLAN firmware doesn't support them
177 		 * but we also shouldn't abort suspend due to that. It does have
178 		 * support for the IGTK key renewal, but doesn't really use the
179 		 * IGTK for anything. This means we could spuriously wake up or
180 		 * be deauthenticated, but that was considered acceptable.
181 		 */
182 		return;
183 	case WLAN_CIPHER_SUITE_TKIP:
184 	case WLAN_CIPHER_SUITE_CCMP:
185 	case WLAN_CIPHER_SUITE_GCMP:
186 	case WLAN_CIPHER_SUITE_GCMP_256:
187 		break;
188 	}
189 
190 	mutex_lock(&mvm->mutex);
191 	/*
192 	 * The D3 firmware hardcodes the key offset 0 as the key it
193 	 * uses to transmit packets to the AP, i.e. the PTK.
194 	 */
195 	if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
196 		mvm->ptk_ivlen = key->iv_len;
197 		mvm->ptk_icvlen = key->icv_len;
198 		ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 0);
199 	} else {
200 		/*
201 		 * firmware only supports TSC/RSC for a single key,
202 		 * so if there are multiple keep overwriting them
203 		 * with new ones -- this relies on mac80211 doing
204 		 * list_add_tail().
205 		 */
206 		mvm->gtk_ivlen = key->iv_len;
207 		mvm->gtk_icvlen = key->icv_len;
208 		ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 1);
209 	}
210 	mutex_unlock(&mvm->mutex);
211 	data->error = ret != 0;
212 }
213 
214 struct wowlan_key_rsc_tsc_data {
215 	struct iwl_wowlan_rsc_tsc_params_cmd_v4 *rsc_tsc;
216 	bool have_rsc_tsc;
217 };
218 
219 static void iwl_mvm_wowlan_get_rsc_tsc_data(struct ieee80211_hw *hw,
220 					    struct ieee80211_vif *vif,
221 					    struct ieee80211_sta *sta,
222 					    struct ieee80211_key_conf *key,
223 					    void *_data)
224 {
225 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
226 	struct wowlan_key_rsc_tsc_data *data = _data;
227 	struct aes_sc *aes_sc;
228 	struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
229 	struct ieee80211_key_seq seq;
230 	int i;
231 
232 	switch (key->cipher) {
233 	default:
234 		break;
235 	case WLAN_CIPHER_SUITE_TKIP:
236 		if (sta) {
237 			u64 pn64;
238 
239 			tkip_sc =
240 			   data->rsc_tsc->params.all_tsc_rsc.tkip.unicast_rsc;
241 			tkip_tx_sc =
242 				&data->rsc_tsc->params.all_tsc_rsc.tkip.tsc;
243 
244 			pn64 = atomic64_read(&key->tx_pn);
245 			tkip_tx_sc->iv16 = cpu_to_le16(TKIP_PN_TO_IV16(pn64));
246 			tkip_tx_sc->iv32 = cpu_to_le32(TKIP_PN_TO_IV32(pn64));
247 		} else {
248 			tkip_sc =
249 			  data->rsc_tsc->params.all_tsc_rsc.tkip.multicast_rsc;
250 		}
251 
252 		/*
253 		 * For non-QoS this relies on the fact that both the uCode and
254 		 * mac80211 use TID 0 (as they need to to avoid replay attacks)
255 		 * for checking the IV in the frames.
256 		 */
257 		for (i = 0; i < IWL_NUM_RSC; i++) {
258 			ieee80211_get_key_rx_seq(key, i, &seq);
259 			tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
260 			tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
261 		}
262 
263 		data->have_rsc_tsc = true;
264 		break;
265 	case WLAN_CIPHER_SUITE_CCMP:
266 	case WLAN_CIPHER_SUITE_GCMP:
267 	case WLAN_CIPHER_SUITE_GCMP_256:
268 		if (sta) {
269 			struct aes_sc *aes_tx_sc;
270 			u64 pn64;
271 
272 			aes_sc =
273 			   data->rsc_tsc->params.all_tsc_rsc.aes.unicast_rsc;
274 			aes_tx_sc =
275 				&data->rsc_tsc->params.all_tsc_rsc.aes.tsc;
276 
277 			pn64 = atomic64_read(&key->tx_pn);
278 			aes_tx_sc->pn = cpu_to_le64(pn64);
279 		} else {
280 			aes_sc =
281 			   data->rsc_tsc->params.all_tsc_rsc.aes.multicast_rsc;
282 		}
283 
284 		/*
285 		 * For non-QoS this relies on the fact that both the uCode and
286 		 * mac80211/our RX code use TID 0 for checking the PN.
287 		 */
288 		if (sta && iwl_mvm_has_new_rx_api(mvm)) {
289 			struct iwl_mvm_sta *mvmsta;
290 			struct iwl_mvm_key_pn *ptk_pn;
291 			const u8 *pn;
292 
293 			mvmsta = iwl_mvm_sta_from_mac80211(sta);
294 			rcu_read_lock();
295 			ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]);
296 			if (WARN_ON(!ptk_pn)) {
297 				rcu_read_unlock();
298 				break;
299 			}
300 
301 			for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
302 				pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i,
303 						mvm->trans->num_rx_queues);
304 				aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
305 							   ((u64)pn[4] << 8) |
306 							   ((u64)pn[3] << 16) |
307 							   ((u64)pn[2] << 24) |
308 							   ((u64)pn[1] << 32) |
309 							   ((u64)pn[0] << 40));
310 			}
311 
312 			rcu_read_unlock();
313 		} else {
314 			for (i = 0; i < IWL_NUM_RSC; i++) {
315 				u8 *pn = seq.ccmp.pn;
316 
317 				ieee80211_get_key_rx_seq(key, i, &seq);
318 				aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
319 							   ((u64)pn[4] << 8) |
320 							   ((u64)pn[3] << 16) |
321 							   ((u64)pn[2] << 24) |
322 							   ((u64)pn[1] << 32) |
323 							   ((u64)pn[0] << 40));
324 			}
325 		}
326 		data->have_rsc_tsc = true;
327 		break;
328 	}
329 }
330 
331 struct wowlan_key_rsc_v5_data {
332 	struct iwl_wowlan_rsc_tsc_params_cmd *rsc;
333 	bool have_rsc;
334 	int gtks;
335 	int gtk_ids[4];
336 };
337 
338 static void iwl_mvm_wowlan_get_rsc_v5_data(struct ieee80211_hw *hw,
339 					   struct ieee80211_vif *vif,
340 					   struct ieee80211_sta *sta,
341 					   struct ieee80211_key_conf *key,
342 					   void *_data)
343 {
344 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
345 	struct wowlan_key_rsc_v5_data *data = _data;
346 	struct ieee80211_key_seq seq;
347 	__le64 *rsc;
348 	int i;
349 
350 	/* only for ciphers that can be PTK/GTK */
351 	switch (key->cipher) {
352 	default:
353 		return;
354 	case WLAN_CIPHER_SUITE_TKIP:
355 	case WLAN_CIPHER_SUITE_CCMP:
356 	case WLAN_CIPHER_SUITE_GCMP:
357 	case WLAN_CIPHER_SUITE_GCMP_256:
358 		break;
359 	}
360 
361 	if (sta) {
362 		rsc = data->rsc->ucast_rsc;
363 	} else {
364 		if (WARN_ON(data->gtks >= ARRAY_SIZE(data->gtk_ids)))
365 			return;
366 		data->gtk_ids[data->gtks] = key->keyidx;
367 		rsc = data->rsc->mcast_rsc[data->gtks % 2];
368 		if (WARN_ON(key->keyidx >=
369 				ARRAY_SIZE(data->rsc->mcast_key_id_map)))
370 			return;
371 		data->rsc->mcast_key_id_map[key->keyidx] = data->gtks % 2;
372 		if (data->gtks >= 2) {
373 			int prev = data->gtks - 2;
374 			int prev_idx = data->gtk_ids[prev];
375 
376 			data->rsc->mcast_key_id_map[prev_idx] =
377 				IWL_MCAST_KEY_MAP_INVALID;
378 		}
379 		data->gtks++;
380 	}
381 
382 	switch (key->cipher) {
383 	default:
384 		WARN_ON(1);
385 		break;
386 	case WLAN_CIPHER_SUITE_TKIP:
387 
388 		/*
389 		 * For non-QoS this relies on the fact that both the uCode and
390 		 * mac80211 use TID 0 (as they need to to avoid replay attacks)
391 		 * for checking the IV in the frames.
392 		 */
393 		for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
394 			ieee80211_get_key_rx_seq(key, i, &seq);
395 
396 			rsc[i] = cpu_to_le64(((u64)seq.tkip.iv32 << 16) |
397 					     seq.tkip.iv16);
398 		}
399 
400 		data->have_rsc = true;
401 		break;
402 	case WLAN_CIPHER_SUITE_CCMP:
403 	case WLAN_CIPHER_SUITE_GCMP:
404 	case WLAN_CIPHER_SUITE_GCMP_256:
405 		/*
406 		 * For non-QoS this relies on the fact that both the uCode and
407 		 * mac80211/our RX code use TID 0 for checking the PN.
408 		 */
409 		if (sta) {
410 			struct iwl_mvm_sta *mvmsta;
411 			struct iwl_mvm_key_pn *ptk_pn;
412 			const u8 *pn;
413 
414 			mvmsta = iwl_mvm_sta_from_mac80211(sta);
415 			rcu_read_lock();
416 			ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]);
417 			if (WARN_ON(!ptk_pn)) {
418 				rcu_read_unlock();
419 				break;
420 			}
421 
422 			for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
423 				pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i,
424 						mvm->trans->num_rx_queues);
425 				rsc[i] = cpu_to_le64((u64)pn[5] |
426 						     ((u64)pn[4] << 8) |
427 						     ((u64)pn[3] << 16) |
428 						     ((u64)pn[2] << 24) |
429 						     ((u64)pn[1] << 32) |
430 						     ((u64)pn[0] << 40));
431 			}
432 
433 			rcu_read_unlock();
434 		} else {
435 			for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
436 				u8 *pn = seq.ccmp.pn;
437 
438 				ieee80211_get_key_rx_seq(key, i, &seq);
439 				rsc[i] = cpu_to_le64((u64)pn[5] |
440 						     ((u64)pn[4] << 8) |
441 						     ((u64)pn[3] << 16) |
442 						     ((u64)pn[2] << 24) |
443 						     ((u64)pn[1] << 32) |
444 						     ((u64)pn[0] << 40));
445 			}
446 		}
447 		data->have_rsc = true;
448 		break;
449 	}
450 }
451 
452 static int iwl_mvm_wowlan_config_rsc_tsc(struct iwl_mvm *mvm,
453 					 struct ieee80211_vif *vif)
454 {
455 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
456 	int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TSC_RSC_PARAM,
457 					IWL_FW_CMD_VER_UNKNOWN);
458 	int ret;
459 
460 	if (ver == 5) {
461 		struct wowlan_key_rsc_v5_data data = {};
462 		int i;
463 
464 		data.rsc = kzalloc(sizeof(*data.rsc), GFP_KERNEL);
465 		if (!data.rsc)
466 			return -ENOMEM;
467 
468 		for (i = 0; i < ARRAY_SIZE(data.rsc->mcast_key_id_map); i++)
469 			data.rsc->mcast_key_id_map[i] =
470 				IWL_MCAST_KEY_MAP_INVALID;
471 		data.rsc->sta_id = cpu_to_le32(mvmvif->deflink.ap_sta_id);
472 
473 		ieee80211_iter_keys(mvm->hw, vif,
474 				    iwl_mvm_wowlan_get_rsc_v5_data,
475 				    &data);
476 
477 		if (data.have_rsc)
478 			ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM,
479 						   CMD_ASYNC, sizeof(*data.rsc),
480 						   data.rsc);
481 		else
482 			ret = 0;
483 		kfree(data.rsc);
484 	} else if (ver == 4 || ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN) {
485 		struct wowlan_key_rsc_tsc_data data = {};
486 		int size;
487 
488 		data.rsc_tsc = kzalloc(sizeof(*data.rsc_tsc), GFP_KERNEL);
489 		if (!data.rsc_tsc)
490 			return -ENOMEM;
491 
492 		if (ver == 4) {
493 			size = sizeof(*data.rsc_tsc);
494 			data.rsc_tsc->sta_id =
495 				cpu_to_le32(mvmvif->deflink.ap_sta_id);
496 		} else {
497 			/* ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN */
498 			size = sizeof(data.rsc_tsc->params);
499 		}
500 
501 		ieee80211_iter_keys(mvm->hw, vif,
502 				    iwl_mvm_wowlan_get_rsc_tsc_data,
503 				    &data);
504 
505 		if (data.have_rsc_tsc)
506 			ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM,
507 						   CMD_ASYNC, size,
508 						   data.rsc_tsc);
509 		else
510 			ret = 0;
511 		kfree(data.rsc_tsc);
512 	} else {
513 		ret = 0;
514 		WARN_ON_ONCE(1);
515 	}
516 
517 	return ret;
518 }
519 
520 struct wowlan_key_tkip_data {
521 	struct iwl_wowlan_tkip_params_cmd tkip;
522 	bool have_tkip_keys;
523 };
524 
525 static void iwl_mvm_wowlan_get_tkip_data(struct ieee80211_hw *hw,
526 					 struct ieee80211_vif *vif,
527 					 struct ieee80211_sta *sta,
528 					 struct ieee80211_key_conf *key,
529 					 void *_data)
530 {
531 	struct wowlan_key_tkip_data *data = _data;
532 	struct iwl_p1k_cache *rx_p1ks;
533 	u8 *rx_mic_key;
534 	struct ieee80211_key_seq seq;
535 	u32 cur_rx_iv32 = 0;
536 	u16 p1k[IWL_P1K_SIZE];
537 	int i;
538 
539 	switch (key->cipher) {
540 	default:
541 		break;
542 	case WLAN_CIPHER_SUITE_TKIP:
543 		if (sta) {
544 			u64 pn64;
545 
546 			rx_p1ks = data->tkip.rx_uni;
547 
548 			pn64 = atomic64_read(&key->tx_pn);
549 
550 			ieee80211_get_tkip_p1k_iv(key, TKIP_PN_TO_IV32(pn64),
551 						  p1k);
552 			iwl_mvm_convert_p1k(p1k, data->tkip.tx.p1k);
553 
554 			memcpy(data->tkip.mic_keys.tx,
555 			       &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
556 			       IWL_MIC_KEY_SIZE);
557 
558 			rx_mic_key = data->tkip.mic_keys.rx_unicast;
559 		} else {
560 			rx_p1ks = data->tkip.rx_multi;
561 			rx_mic_key = data->tkip.mic_keys.rx_mcast;
562 		}
563 
564 		for (i = 0; i < IWL_NUM_RSC; i++) {
565 			ieee80211_get_key_rx_seq(key, i, &seq);
566 			/* wrapping isn't allowed, AP must rekey */
567 			if (seq.tkip.iv32 > cur_rx_iv32)
568 				cur_rx_iv32 = seq.tkip.iv32;
569 		}
570 
571 		ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
572 					  cur_rx_iv32, p1k);
573 		iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k);
574 		ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
575 					  cur_rx_iv32 + 1, p1k);
576 		iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k);
577 
578 		memcpy(rx_mic_key,
579 		       &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
580 		       IWL_MIC_KEY_SIZE);
581 
582 		data->have_tkip_keys = true;
583 		break;
584 	}
585 }
586 
587 struct wowlan_key_gtk_type_iter {
588 	struct iwl_wowlan_kek_kck_material_cmd_v4 *kek_kck_cmd;
589 };
590 
591 static void iwl_mvm_wowlan_gtk_type_iter(struct ieee80211_hw *hw,
592 					 struct ieee80211_vif *vif,
593 					 struct ieee80211_sta *sta,
594 					 struct ieee80211_key_conf *key,
595 					 void *_data)
596 {
597 	struct wowlan_key_gtk_type_iter *data = _data;
598 
599 	switch (key->cipher) {
600 	default:
601 		return;
602 	case WLAN_CIPHER_SUITE_TKIP:
603 		if (!sta)
604 			data->kek_kck_cmd->gtk_cipher =
605 				cpu_to_le32(STA_KEY_FLG_TKIP);
606 		return;
607 	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
608 	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
609 		data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_GCMP);
610 		return;
611 	case WLAN_CIPHER_SUITE_AES_CMAC:
612 		data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_CCM);
613 		return;
614 	case WLAN_CIPHER_SUITE_CCMP:
615 		if (!sta)
616 			data->kek_kck_cmd->gtk_cipher =
617 				cpu_to_le32(STA_KEY_FLG_CCM);
618 		return;
619 	case WLAN_CIPHER_SUITE_GCMP:
620 	case WLAN_CIPHER_SUITE_GCMP_256:
621 		if (!sta)
622 			data->kek_kck_cmd->gtk_cipher =
623 				cpu_to_le32(STA_KEY_FLG_GCMP);
624 		return;
625 	}
626 }
627 
628 static int iwl_mvm_send_patterns_v1(struct iwl_mvm *mvm,
629 				    struct cfg80211_wowlan *wowlan)
630 {
631 	struct iwl_wowlan_patterns_cmd_v1 *pattern_cmd;
632 	struct iwl_host_cmd cmd = {
633 		.id = WOWLAN_PATTERNS,
634 		.dataflags[0] = IWL_HCMD_DFL_NOCOPY,
635 	};
636 	int i, err;
637 
638 	if (!wowlan->n_patterns)
639 		return 0;
640 
641 	cmd.len[0] = struct_size(pattern_cmd, patterns, wowlan->n_patterns);
642 
643 	pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
644 	if (!pattern_cmd)
645 		return -ENOMEM;
646 
647 	pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
648 
649 	for (i = 0; i < wowlan->n_patterns; i++) {
650 		int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
651 
652 		memcpy(&pattern_cmd->patterns[i].mask,
653 		       wowlan->patterns[i].mask, mask_len);
654 		memcpy(&pattern_cmd->patterns[i].pattern,
655 		       wowlan->patterns[i].pattern,
656 		       wowlan->patterns[i].pattern_len);
657 		pattern_cmd->patterns[i].mask_size = mask_len;
658 		pattern_cmd->patterns[i].pattern_size =
659 			wowlan->patterns[i].pattern_len;
660 	}
661 
662 	cmd.data[0] = pattern_cmd;
663 	err = iwl_mvm_send_cmd(mvm, &cmd);
664 	kfree(pattern_cmd);
665 	return err;
666 }
667 
668 static int iwl_mvm_send_patterns(struct iwl_mvm *mvm,
669 				 struct ieee80211_vif *vif,
670 				 struct cfg80211_wowlan *wowlan)
671 {
672 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
673 	struct iwl_wowlan_patterns_cmd *pattern_cmd;
674 	struct iwl_host_cmd cmd = {
675 		.id = WOWLAN_PATTERNS,
676 		.dataflags[0] = IWL_HCMD_DFL_NOCOPY,
677 	};
678 	int i, err;
679 	int ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id,
680 					IWL_FW_CMD_VER_UNKNOWN);
681 
682 	if (!wowlan->n_patterns)
683 		return 0;
684 
685 	cmd.len[0] = sizeof(*pattern_cmd) +
686 		wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern_v2);
687 
688 	pattern_cmd = kzalloc(cmd.len[0], GFP_KERNEL);
689 	if (!pattern_cmd)
690 		return -ENOMEM;
691 
692 	pattern_cmd->n_patterns = wowlan->n_patterns;
693 	if (ver >= 3)
694 		pattern_cmd->sta_id = mvmvif->deflink.ap_sta_id;
695 
696 	for (i = 0; i < wowlan->n_patterns; i++) {
697 		int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
698 
699 		pattern_cmd->patterns[i].pattern_type =
700 			WOWLAN_PATTERN_TYPE_BITMASK;
701 
702 		memcpy(&pattern_cmd->patterns[i].u.bitmask.mask,
703 		       wowlan->patterns[i].mask, mask_len);
704 		memcpy(&pattern_cmd->patterns[i].u.bitmask.pattern,
705 		       wowlan->patterns[i].pattern,
706 		       wowlan->patterns[i].pattern_len);
707 		pattern_cmd->patterns[i].u.bitmask.mask_size = mask_len;
708 		pattern_cmd->patterns[i].u.bitmask.pattern_size =
709 			wowlan->patterns[i].pattern_len;
710 	}
711 
712 	cmd.data[0] = pattern_cmd;
713 	err = iwl_mvm_send_cmd(mvm, &cmd);
714 	kfree(pattern_cmd);
715 	return err;
716 }
717 
718 static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
719 				struct ieee80211_sta *ap_sta)
720 {
721 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
722 	struct ieee80211_chanctx_conf *ctx;
723 	u8 chains_static, chains_dynamic;
724 	struct cfg80211_chan_def chandef;
725 	int ret, i;
726 	struct iwl_binding_cmd_v1 binding_cmd = {};
727 	struct iwl_time_quota_cmd quota_cmd = {};
728 	struct iwl_time_quota_data *quota;
729 	u32 status;
730 
731 	if (WARN_ON_ONCE(iwl_mvm_is_cdb_supported(mvm)))
732 		return -EINVAL;
733 
734 	/* add back the PHY */
735 	if (WARN_ON(!mvmvif->deflink.phy_ctxt))
736 		return -EINVAL;
737 
738 	rcu_read_lock();
739 	ctx = rcu_dereference(vif->bss_conf.chanctx_conf);
740 	if (WARN_ON(!ctx)) {
741 		rcu_read_unlock();
742 		return -EINVAL;
743 	}
744 	chandef = ctx->def;
745 	chains_static = ctx->rx_chains_static;
746 	chains_dynamic = ctx->rx_chains_dynamic;
747 	rcu_read_unlock();
748 
749 	ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->deflink.phy_ctxt, &chandef,
750 				   chains_static, chains_dynamic);
751 	if (ret)
752 		return ret;
753 
754 	/* add back the MAC */
755 	mvmvif->uploaded = false;
756 
757 	if (WARN_ON(!vif->cfg.assoc))
758 		return -EINVAL;
759 
760 	ret = iwl_mvm_mac_ctxt_add(mvm, vif);
761 	if (ret)
762 		return ret;
763 
764 	/* add back binding - XXX refactor? */
765 	binding_cmd.id_and_color =
766 		cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id,
767 						mvmvif->deflink.phy_ctxt->color));
768 	binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD);
769 	binding_cmd.phy =
770 		cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id,
771 						mvmvif->deflink.phy_ctxt->color));
772 	binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
773 							      mvmvif->color));
774 	for (i = 1; i < MAX_MACS_IN_BINDING; i++)
775 		binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID);
776 
777 	status = 0;
778 	ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD,
779 					  IWL_BINDING_CMD_SIZE_V1, &binding_cmd,
780 					  &status);
781 	if (ret) {
782 		IWL_ERR(mvm, "Failed to add binding: %d\n", ret);
783 		return ret;
784 	}
785 
786 	if (status) {
787 		IWL_ERR(mvm, "Binding command failed: %u\n", status);
788 		return -EIO;
789 	}
790 
791 	ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false, 0);
792 	if (ret)
793 		return ret;
794 	rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->deflink.ap_sta_id],
795 			   ap_sta);
796 
797 	ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
798 	if (ret)
799 		return ret;
800 
801 	/* and some quota */
802 	quota = iwl_mvm_quota_cmd_get_quota(mvm, &quota_cmd, 0);
803 	quota->id_and_color =
804 		cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id,
805 						mvmvif->deflink.phy_ctxt->color));
806 	quota->quota = cpu_to_le32(IWL_MVM_MAX_QUOTA);
807 	quota->max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA);
808 
809 	for (i = 1; i < MAX_BINDINGS; i++) {
810 		quota = iwl_mvm_quota_cmd_get_quota(mvm, &quota_cmd, i);
811 		quota->id_and_color = cpu_to_le32(FW_CTXT_INVALID);
812 	}
813 
814 	ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0,
815 				   iwl_mvm_quota_cmd_size(mvm), &quota_cmd);
816 	if (ret)
817 		IWL_ERR(mvm, "Failed to send quota: %d\n", ret);
818 
819 	if (iwl_mvm_is_lar_supported(mvm) && iwl_mvm_init_fw_regd(mvm))
820 		IWL_ERR(mvm, "Failed to initialize D3 LAR information\n");
821 
822 	return 0;
823 }
824 
825 static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm,
826 				       struct ieee80211_vif *vif)
827 {
828 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
829 	struct iwl_nonqos_seq_query_cmd query_cmd = {
830 		.get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET),
831 		.mac_id_n_color =
832 			cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
833 							mvmvif->color)),
834 	};
835 	struct iwl_host_cmd cmd = {
836 		.id = NON_QOS_TX_COUNTER_CMD,
837 		.flags = CMD_WANT_SKB,
838 	};
839 	int err;
840 	u32 size;
841 
842 	cmd.data[0] = &query_cmd;
843 	cmd.len[0] = sizeof(query_cmd);
844 
845 	err = iwl_mvm_send_cmd(mvm, &cmd);
846 	if (err)
847 		return err;
848 
849 	size = iwl_rx_packet_payload_len(cmd.resp_pkt);
850 	if (size < sizeof(__le16)) {
851 		err = -EINVAL;
852 	} else {
853 		err = le16_to_cpup((__le16 *)cmd.resp_pkt->data);
854 		/* firmware returns next, not last-used seqno */
855 		err = (u16) (err - 0x10);
856 	}
857 
858 	iwl_free_resp(&cmd);
859 	return err;
860 }
861 
862 void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
863 {
864 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
865 	struct iwl_nonqos_seq_query_cmd query_cmd = {
866 		.get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET),
867 		.mac_id_n_color =
868 			cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
869 							mvmvif->color)),
870 		.value = cpu_to_le16(mvmvif->seqno),
871 	};
872 
873 	/* return if called during restart, not resume from D3 */
874 	if (!mvmvif->seqno_valid)
875 		return;
876 
877 	mvmvif->seqno_valid = false;
878 
879 	if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0,
880 				 sizeof(query_cmd), &query_cmd))
881 		IWL_ERR(mvm, "failed to set non-QoS seqno\n");
882 }
883 
884 static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm)
885 {
886 	iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
887 
888 	iwl_mvm_stop_device(mvm);
889 	/*
890 	 * Set the HW restart bit -- this is mostly true as we're
891 	 * going to load new firmware and reprogram that, though
892 	 * the reprogramming is going to be manual to avoid adding
893 	 * all the MACs that aren't support.
894 	 * We don't have to clear up everything though because the
895 	 * reprogramming is manual. When we resume, we'll actually
896 	 * go through a proper restart sequence again to switch
897 	 * back to the runtime firmware image.
898 	 */
899 	set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
900 
901 	/* the fw is reset, so all the keys are cleared */
902 	memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
903 
904 	mvm->ptk_ivlen = 0;
905 	mvm->ptk_icvlen = 0;
906 	mvm->ptk_ivlen = 0;
907 	mvm->ptk_icvlen = 0;
908 
909 	return iwl_mvm_load_d3_fw(mvm);
910 }
911 
912 static int
913 iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm,
914 			  struct cfg80211_wowlan *wowlan,
915 			  struct iwl_wowlan_config_cmd *wowlan_config_cmd,
916 			  struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
917 			  struct ieee80211_sta *ap_sta)
918 {
919 	struct iwl_mvm_sta *mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
920 
921 	/* TODO: wowlan_config_cmd->wowlan_ba_teardown_tids */
922 
923 	wowlan_config_cmd->is_11n_connection =
924 					ap_sta->deflink.ht_cap.ht_supported;
925 	wowlan_config_cmd->flags = ENABLE_L3_FILTERING |
926 		ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING;
927 
928 	if (iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_CONFIGURATION, 0) < 6) {
929 		/* Query the last used seqno and set it */
930 		int ret = iwl_mvm_get_last_nonqos_seq(mvm, vif);
931 
932 		if (ret < 0)
933 			return ret;
934 
935 		wowlan_config_cmd->non_qos_seq = cpu_to_le16(ret);
936 	}
937 
938 	iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, wowlan_config_cmd);
939 
940 	if (wowlan->disconnect)
941 		wowlan_config_cmd->wakeup_filter |=
942 			cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
943 				    IWL_WOWLAN_WAKEUP_LINK_CHANGE);
944 	if (wowlan->magic_pkt)
945 		wowlan_config_cmd->wakeup_filter |=
946 			cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET);
947 	if (wowlan->gtk_rekey_failure)
948 		wowlan_config_cmd->wakeup_filter |=
949 			cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
950 	if (wowlan->eap_identity_req)
951 		wowlan_config_cmd->wakeup_filter |=
952 			cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ);
953 	if (wowlan->four_way_handshake)
954 		wowlan_config_cmd->wakeup_filter |=
955 			cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
956 	if (wowlan->n_patterns)
957 		wowlan_config_cmd->wakeup_filter |=
958 			cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH);
959 
960 	if (wowlan->rfkill_release)
961 		wowlan_config_cmd->wakeup_filter |=
962 			cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
963 
964 	if (wowlan->tcp) {
965 		/*
966 		 * Set the "link change" (really "link lost") flag as well
967 		 * since that implies losing the TCP connection.
968 		 */
969 		wowlan_config_cmd->wakeup_filter |=
970 			cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS |
971 				    IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE |
972 				    IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET |
973 				    IWL_WOWLAN_WAKEUP_LINK_CHANGE);
974 	}
975 
976 	if (wowlan->any) {
977 		wowlan_config_cmd->wakeup_filter |=
978 			cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
979 				    IWL_WOWLAN_WAKEUP_LINK_CHANGE |
980 				    IWL_WOWLAN_WAKEUP_RX_FRAME |
981 				    IWL_WOWLAN_WAKEUP_BCN_FILTERING);
982 	}
983 
984 	return 0;
985 }
986 
987 static int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm,
988 					    struct ieee80211_vif *vif)
989 {
990 	bool unified = fw_has_capa(&mvm->fw->ucode_capa,
991 				   IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
992 	struct wowlan_key_reprogram_data key_data = {};
993 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
994 	int ret;
995 	u8 cmd_ver;
996 	size_t cmd_size;
997 
998 	if (!unified) {
999 		/*
1000 		 * if we have to configure keys, call ieee80211_iter_keys(),
1001 		 * as we need non-atomic context in order to take the
1002 		 * required locks.
1003 		 */
1004 		/*
1005 		 * Note that currently we don't use CMD_ASYNC in the iterator.
1006 		 * In case of key_data.configure_keys, all the configured
1007 		 * commands are SYNC, and iwl_mvm_wowlan_program_keys() will
1008 		 * take care of locking/unlocking mvm->mutex.
1009 		 */
1010 		ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_program_keys,
1011 				    &key_data);
1012 
1013 		if (key_data.error)
1014 			return -EIO;
1015 	}
1016 
1017 	ret = iwl_mvm_wowlan_config_rsc_tsc(mvm, vif);
1018 	if (ret)
1019 		return ret;
1020 
1021 	if (!fw_has_api(&mvm->fw->ucode_capa,
1022 			IWL_UCODE_TLV_API_TKIP_MIC_KEYS)) {
1023 		int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TKIP_PARAM,
1024 						IWL_FW_CMD_VER_UNKNOWN);
1025 		struct wowlan_key_tkip_data tkip_data = {};
1026 		int size;
1027 
1028 		if (ver == 2) {
1029 			size = sizeof(tkip_data.tkip);
1030 			tkip_data.tkip.sta_id =
1031 				cpu_to_le32(mvmvif->deflink.ap_sta_id);
1032 		} else if (ver == 1 || ver == IWL_FW_CMD_VER_UNKNOWN) {
1033 			size = sizeof(struct iwl_wowlan_tkip_params_cmd_ver_1);
1034 		} else {
1035 			WARN_ON_ONCE(1);
1036 			return -EINVAL;
1037 		}
1038 
1039 		ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_get_tkip_data,
1040 				    &tkip_data);
1041 
1042 		if (tkip_data.have_tkip_keys) {
1043 			/* send relevant data according to CMD version */
1044 			ret = iwl_mvm_send_cmd_pdu(mvm,
1045 						   WOWLAN_TKIP_PARAM,
1046 						   CMD_ASYNC, size,
1047 						   &tkip_data.tkip);
1048 			if (ret)
1049 				return ret;
1050 		}
1051 	}
1052 
1053 	/* configure rekey data only if offloaded rekey is supported (d3) */
1054 	if (mvmvif->rekey_data.valid) {
1055 		struct iwl_wowlan_kek_kck_material_cmd_v4 kek_kck_cmd = {};
1056 		struct iwl_wowlan_kek_kck_material_cmd_v4 *_kek_kck_cmd =
1057 			&kek_kck_cmd;
1058 		struct wowlan_key_gtk_type_iter gtk_type_data = {
1059 			.kek_kck_cmd = _kek_kck_cmd,
1060 		};
1061 
1062 		cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,
1063 						WOWLAN_KEK_KCK_MATERIAL,
1064 						IWL_FW_CMD_VER_UNKNOWN);
1065 		if (WARN_ON(cmd_ver != 2 && cmd_ver != 3 && cmd_ver != 4 &&
1066 			    cmd_ver != IWL_FW_CMD_VER_UNKNOWN))
1067 			return -EINVAL;
1068 
1069 		ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_gtk_type_iter,
1070 				    &gtk_type_data);
1071 
1072 		memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck,
1073 		       mvmvif->rekey_data.kck_len);
1074 		kek_kck_cmd.kck_len = cpu_to_le16(mvmvif->rekey_data.kck_len);
1075 		memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek,
1076 		       mvmvif->rekey_data.kek_len);
1077 		kek_kck_cmd.kek_len = cpu_to_le16(mvmvif->rekey_data.kek_len);
1078 		kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr;
1079 		kek_kck_cmd.akm = cpu_to_le32(mvmvif->rekey_data.akm);
1080 		kek_kck_cmd.sta_id = cpu_to_le32(mvmvif->deflink.ap_sta_id);
1081 
1082 		if (cmd_ver == 4) {
1083 			cmd_size = sizeof(struct iwl_wowlan_kek_kck_material_cmd_v4);
1084 		} else {
1085 			if (cmd_ver == 3)
1086 				cmd_size =
1087 					sizeof(struct iwl_wowlan_kek_kck_material_cmd_v3);
1088 			else
1089 				cmd_size =
1090 					sizeof(struct iwl_wowlan_kek_kck_material_cmd_v2);
1091 			/* skip the sta_id at the beginning */
1092 			_kek_kck_cmd = (void *)
1093 				((u8 *)_kek_kck_cmd + sizeof(kek_kck_cmd.sta_id));
1094 		}
1095 
1096 		IWL_DEBUG_WOWLAN(mvm, "setting akm %d\n",
1097 				 mvmvif->rekey_data.akm);
1098 
1099 		ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_KEK_KCK_MATERIAL,
1100 					   CMD_ASYNC, cmd_size, _kek_kck_cmd);
1101 		if (ret)
1102 			return ret;
1103 	}
1104 
1105 	return 0;
1106 }
1107 
1108 static int
1109 iwl_mvm_wowlan_config(struct iwl_mvm *mvm,
1110 		      struct cfg80211_wowlan *wowlan,
1111 		      struct iwl_wowlan_config_cmd *wowlan_config_cmd,
1112 		      struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
1113 		      struct ieee80211_sta *ap_sta)
1114 {
1115 	int ret;
1116 	bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1117 					 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1118 
1119 	mvm->offload_tid = wowlan_config_cmd->offloading_tid;
1120 
1121 	if (!unified_image) {
1122 		ret = iwl_mvm_switch_to_d3(mvm);
1123 		if (ret)
1124 			return ret;
1125 
1126 		ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta);
1127 		if (ret)
1128 			return ret;
1129 	}
1130 
1131 	/*
1132 	 * This needs to be unlocked due to lock ordering
1133 	 * constraints. Since we're in the suspend path
1134 	 * that isn't really a problem though.
1135 	 */
1136 	mutex_unlock(&mvm->mutex);
1137 	ret = iwl_mvm_wowlan_config_key_params(mvm, vif);
1138 	mutex_lock(&mvm->mutex);
1139 	if (ret)
1140 		return ret;
1141 
1142 	ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0,
1143 				   sizeof(*wowlan_config_cmd),
1144 				   wowlan_config_cmd);
1145 	if (ret)
1146 		return ret;
1147 
1148 	if (fw_has_api(&mvm->fw->ucode_capa,
1149 		       IWL_UCODE_TLV_API_WOWLAN_TCP_SYN_WAKE))
1150 		ret = iwl_mvm_send_patterns(mvm, vif, wowlan);
1151 	else
1152 		ret = iwl_mvm_send_patterns_v1(mvm, wowlan);
1153 	if (ret)
1154 		return ret;
1155 
1156 	return iwl_mvm_send_proto_offload(mvm, vif, false, true, 0);
1157 }
1158 
1159 static int
1160 iwl_mvm_netdetect_config(struct iwl_mvm *mvm,
1161 			 struct cfg80211_wowlan *wowlan,
1162 			 struct cfg80211_sched_scan_request *nd_config,
1163 			 struct ieee80211_vif *vif)
1164 {
1165 	int ret;
1166 	bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1167 					 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1168 
1169 	if (!unified_image) {
1170 		ret = iwl_mvm_switch_to_d3(mvm);
1171 		if (ret)
1172 			return ret;
1173 	} else {
1174 		/* In theory, we wouldn't have to stop a running sched
1175 		 * scan in order to start another one (for
1176 		 * net-detect).  But in practice this doesn't seem to
1177 		 * work properly, so stop any running sched_scan now.
1178 		 */
1179 		ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
1180 		if (ret)
1181 			return ret;
1182 	}
1183 
1184 	ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies,
1185 				       IWL_MVM_SCAN_NETDETECT);
1186 	if (ret)
1187 		return ret;
1188 
1189 	if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels))
1190 		return -EBUSY;
1191 
1192 	/* save the sched scan matchsets... */
1193 	if (nd_config->n_match_sets) {
1194 		mvm->nd_match_sets = kmemdup(nd_config->match_sets,
1195 					     sizeof(*nd_config->match_sets) *
1196 					     nd_config->n_match_sets,
1197 					     GFP_KERNEL);
1198 		if (mvm->nd_match_sets)
1199 			mvm->n_nd_match_sets = nd_config->n_match_sets;
1200 	}
1201 
1202 	/* ...and the sched scan channels for later reporting */
1203 	mvm->nd_channels = kmemdup(nd_config->channels,
1204 				   sizeof(*nd_config->channels) *
1205 				   nd_config->n_channels,
1206 				   GFP_KERNEL);
1207 	if (mvm->nd_channels)
1208 		mvm->n_nd_channels = nd_config->n_channels;
1209 
1210 	return 0;
1211 }
1212 
1213 static void iwl_mvm_free_nd(struct iwl_mvm *mvm)
1214 {
1215 	kfree(mvm->nd_match_sets);
1216 	mvm->nd_match_sets = NULL;
1217 	mvm->n_nd_match_sets = 0;
1218 	kfree(mvm->nd_channels);
1219 	mvm->nd_channels = NULL;
1220 	mvm->n_nd_channels = 0;
1221 }
1222 
1223 static int __iwl_mvm_suspend(struct ieee80211_hw *hw,
1224 			     struct cfg80211_wowlan *wowlan,
1225 			     bool test)
1226 {
1227 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1228 	struct ieee80211_vif *vif = NULL;
1229 	struct iwl_mvm_vif *mvmvif = NULL;
1230 	struct ieee80211_sta *ap_sta = NULL;
1231 	struct iwl_d3_manager_config d3_cfg_cmd_data = {
1232 		/*
1233 		 * Program the minimum sleep time to 10 seconds, as many
1234 		 * platforms have issues processing a wakeup signal while
1235 		 * still being in the process of suspending.
1236 		 */
1237 		.min_sleep_time = cpu_to_le32(10 * 1000 * 1000),
1238 	};
1239 	struct iwl_host_cmd d3_cfg_cmd = {
1240 		.id = D3_CONFIG_CMD,
1241 		.flags = CMD_WANT_SKB | CMD_SEND_IN_D3,
1242 		.data[0] = &d3_cfg_cmd_data,
1243 		.len[0] = sizeof(d3_cfg_cmd_data),
1244 	};
1245 	int ret;
1246 	int len __maybe_unused;
1247 	bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1248 					 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1249 
1250 	if (!wowlan) {
1251 		/*
1252 		 * mac80211 shouldn't get here, but for D3 test
1253 		 * it doesn't warrant a warning
1254 		 */
1255 		WARN_ON(!test);
1256 		return -EINVAL;
1257 	}
1258 
1259 	mutex_lock(&mvm->mutex);
1260 
1261 	set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
1262 
1263 	synchronize_net();
1264 
1265 	vif = iwl_mvm_get_bss_vif(mvm);
1266 	if (IS_ERR_OR_NULL(vif)) {
1267 		ret = 1;
1268 		goto out_noreset;
1269 	}
1270 
1271 	mvmvif = iwl_mvm_vif_from_mac80211(vif);
1272 
1273 	if (mvmvif->deflink.ap_sta_id == IWL_MVM_INVALID_STA) {
1274 		/* if we're not associated, this must be netdetect */
1275 		if (!wowlan->nd_config) {
1276 			ret = 1;
1277 			goto out_noreset;
1278 		}
1279 
1280 		ret = iwl_mvm_netdetect_config(
1281 			mvm, wowlan, wowlan->nd_config, vif);
1282 		if (ret)
1283 			goto out;
1284 
1285 		mvm->net_detect = true;
1286 	} else {
1287 		struct iwl_wowlan_config_cmd wowlan_config_cmd = {};
1288 
1289 		wowlan_config_cmd.sta_id = mvmvif->deflink.ap_sta_id;
1290 
1291 		ap_sta = rcu_dereference_protected(
1292 			mvm->fw_id_to_mac_id[mvmvif->deflink.ap_sta_id],
1293 			lockdep_is_held(&mvm->mutex));
1294 		if (IS_ERR_OR_NULL(ap_sta)) {
1295 			ret = -EINVAL;
1296 			goto out_noreset;
1297 		}
1298 
1299 		ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1300 						vif, mvmvif, ap_sta);
1301 		if (ret)
1302 			goto out_noreset;
1303 		ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1304 					    vif, mvmvif, ap_sta);
1305 		if (ret)
1306 			goto out;
1307 
1308 		mvm->net_detect = false;
1309 	}
1310 
1311 	ret = iwl_mvm_power_update_device(mvm);
1312 	if (ret)
1313 		goto out;
1314 
1315 	ret = iwl_mvm_power_update_mac(mvm);
1316 	if (ret)
1317 		goto out;
1318 
1319 #ifdef CONFIG_IWLWIFI_DEBUGFS
1320 	if (mvm->d3_wake_sysassert)
1321 		d3_cfg_cmd_data.wakeup_flags |=
1322 			cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR);
1323 #endif
1324 
1325 	/*
1326 	 * Prior to 9000 device family the driver needs to stop the dbg
1327 	 * recording before entering D3. In later devices the FW stops the
1328 	 * recording automatically.
1329 	 */
1330 	if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_9000)
1331 		iwl_fw_dbg_stop_restart_recording(&mvm->fwrt, NULL, true);
1332 
1333 	mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_D3;
1334 
1335 	/* must be last -- this switches firmware state */
1336 	ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd);
1337 	if (ret)
1338 		goto out;
1339 #ifdef CONFIG_IWLWIFI_DEBUGFS
1340 	len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt);
1341 	if (len >= sizeof(u32)) {
1342 		mvm->d3_test_pme_ptr =
1343 			le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data);
1344 	}
1345 #endif
1346 	iwl_free_resp(&d3_cfg_cmd);
1347 
1348 	clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1349 
1350 	ret = iwl_trans_d3_suspend(mvm->trans, test, !unified_image);
1351  out:
1352 	if (ret < 0) {
1353 		iwl_mvm_free_nd(mvm);
1354 
1355 		if (!unified_image) {
1356 			if (mvm->fw_restart > 0) {
1357 				mvm->fw_restart--;
1358 				ieee80211_restart_hw(mvm->hw);
1359 			}
1360 		}
1361 
1362 		clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
1363 	}
1364  out_noreset:
1365 	mutex_unlock(&mvm->mutex);
1366 
1367 	return ret;
1368 }
1369 
1370 int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
1371 {
1372 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1373 
1374 	iwl_mvm_pause_tcm(mvm, true);
1375 
1376 	iwl_fw_runtime_suspend(&mvm->fwrt);
1377 
1378 	return __iwl_mvm_suspend(hw, wowlan, false);
1379 }
1380 
1381 struct iwl_multicast_key_data {
1382 	u8 key[WOWLAN_KEY_MAX_SIZE];
1383 	u8 len;
1384 	u8 flags;
1385 	u8 id;
1386 	u8 ipn[6];
1387 };
1388 
1389 /* converted data from the different status responses */
1390 struct iwl_wowlan_status_data {
1391 	u64 replay_ctr;
1392 	u32 num_of_gtk_rekeys;
1393 	u32 received_beacons;
1394 	u32 wakeup_reasons;
1395 	u32 wake_packet_length;
1396 	u32 wake_packet_bufsize;
1397 	u16 pattern_number;
1398 	u16 non_qos_seq_ctr;
1399 	u16 qos_seq_ctr[8];
1400 	u8 tid_tear_down;
1401 
1402 	struct {
1403 		/* including RX MIC key for TKIP */
1404 		u8 key[WOWLAN_KEY_MAX_SIZE];
1405 		u8 len;
1406 		u8 flags;
1407 		u8 id;
1408 	} gtk[WOWLAN_GTK_KEYS_NUM];
1409 
1410 	struct {
1411 		/*
1412 		 * We store both the TKIP and AES representations
1413 		 * coming from the firmware because we decode the
1414 		 * data from there before we iterate the keys and
1415 		 * know which one we need.
1416 		 */
1417 		struct {
1418 			struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT];
1419 		} tkip, aes;
1420 
1421 		/*
1422 		 * We use -1 for when we have valid data but don't know
1423 		 * the key ID from firmware, and thus it needs to be
1424 		 * installed with the last key (depending on rekeying).
1425 		 */
1426 		s8 key_id;
1427 		bool valid;
1428 	} gtk_seq[2];
1429 
1430 	struct {
1431 		/* Same as above */
1432 		struct {
1433 			struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT];
1434 			u64 tx_pn;
1435 		} tkip, aes;
1436 	} ptk;
1437 
1438 	struct iwl_multicast_key_data igtk;
1439 
1440 	u8 *wake_packet;
1441 };
1442 
1443 static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm,
1444 					  struct ieee80211_vif *vif,
1445 					  struct iwl_wowlan_status_data *status)
1446 {
1447 	struct sk_buff *pkt = NULL;
1448 	struct cfg80211_wowlan_wakeup wakeup = {
1449 		.pattern_idx = -1,
1450 	};
1451 	struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
1452 	u32 reasons = status->wakeup_reasons;
1453 
1454 	if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
1455 		wakeup_report = NULL;
1456 		goto report;
1457 	}
1458 
1459 	pm_wakeup_event(mvm->dev, 0);
1460 
1461 	if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET)
1462 		wakeup.magic_pkt = true;
1463 
1464 	if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN)
1465 		wakeup.pattern_idx =
1466 			status->pattern_number;
1467 
1468 	if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1469 		       IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH))
1470 		wakeup.disconnect = true;
1471 
1472 	if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)
1473 		wakeup.gtk_rekey_failure = true;
1474 
1475 	if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
1476 		wakeup.rfkill_release = true;
1477 
1478 	if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST)
1479 		wakeup.eap_identity_req = true;
1480 
1481 	if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE)
1482 		wakeup.four_way_handshake = true;
1483 
1484 	if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS)
1485 		wakeup.tcp_connlost = true;
1486 
1487 	if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE)
1488 		wakeup.tcp_nomoretokens = true;
1489 
1490 	if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET)
1491 		wakeup.tcp_match = true;
1492 
1493 	if (status->wake_packet) {
1494 		int pktsize = status->wake_packet_bufsize;
1495 		int pktlen = status->wake_packet_length;
1496 		const u8 *pktdata = status->wake_packet;
1497 		const struct ieee80211_hdr *hdr = (const void *)pktdata;
1498 		int truncated = pktlen - pktsize;
1499 
1500 		/* this would be a firmware bug */
1501 		if (WARN_ON_ONCE(truncated < 0))
1502 			truncated = 0;
1503 
1504 		if (ieee80211_is_data(hdr->frame_control)) {
1505 			int hdrlen = ieee80211_hdrlen(hdr->frame_control);
1506 			int ivlen = 0, icvlen = 4; /* also FCS */
1507 
1508 			pkt = alloc_skb(pktsize, GFP_KERNEL);
1509 			if (!pkt)
1510 				goto report;
1511 
1512 			skb_put_data(pkt, pktdata, hdrlen);
1513 			pktdata += hdrlen;
1514 			pktsize -= hdrlen;
1515 
1516 			if (ieee80211_has_protected(hdr->frame_control)) {
1517 				/*
1518 				 * This is unlocked and using gtk_i(c)vlen,
1519 				 * but since everything is under RTNL still
1520 				 * that's not really a problem - changing
1521 				 * it would be difficult.
1522 				 */
1523 				if (is_multicast_ether_addr(hdr->addr1)) {
1524 					ivlen = mvm->gtk_ivlen;
1525 					icvlen += mvm->gtk_icvlen;
1526 				} else {
1527 					ivlen = mvm->ptk_ivlen;
1528 					icvlen += mvm->ptk_icvlen;
1529 				}
1530 			}
1531 
1532 			/* if truncated, FCS/ICV is (partially) gone */
1533 			if (truncated >= icvlen) {
1534 				icvlen = 0;
1535 				truncated -= icvlen;
1536 			} else {
1537 				icvlen -= truncated;
1538 				truncated = 0;
1539 			}
1540 
1541 			pktsize -= ivlen + icvlen;
1542 			pktdata += ivlen;
1543 
1544 			skb_put_data(pkt, pktdata, pktsize);
1545 
1546 			if (ieee80211_data_to_8023(pkt, vif->addr, vif->type))
1547 				goto report;
1548 			wakeup.packet = pkt->data;
1549 			wakeup.packet_present_len = pkt->len;
1550 			wakeup.packet_len = pkt->len - truncated;
1551 			wakeup.packet_80211 = false;
1552 		} else {
1553 			int fcslen = 4;
1554 
1555 			if (truncated >= 4) {
1556 				truncated -= 4;
1557 				fcslen = 0;
1558 			} else {
1559 				fcslen -= truncated;
1560 				truncated = 0;
1561 			}
1562 			pktsize -= fcslen;
1563 			wakeup.packet = status->wake_packet;
1564 			wakeup.packet_present_len = pktsize;
1565 			wakeup.packet_len = pktlen - truncated;
1566 			wakeup.packet_80211 = true;
1567 		}
1568 	}
1569 
1570  report:
1571 	ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
1572 	kfree_skb(pkt);
1573 }
1574 
1575 static void iwl_mvm_le64_to_aes_seq(__le64 le_pn, struct ieee80211_key_seq *seq)
1576 {
1577 	u64 pn = le64_to_cpu(le_pn);
1578 
1579 	seq->ccmp.pn[0] = pn >> 40;
1580 	seq->ccmp.pn[1] = pn >> 32;
1581 	seq->ccmp.pn[2] = pn >> 24;
1582 	seq->ccmp.pn[3] = pn >> 16;
1583 	seq->ccmp.pn[4] = pn >> 8;
1584 	seq->ccmp.pn[5] = pn;
1585 }
1586 
1587 static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc,
1588 				  struct ieee80211_key_seq *seq)
1589 {
1590 	iwl_mvm_le64_to_aes_seq(sc->pn, seq);
1591 }
1592 
1593 static void iwl_mvm_le64_to_tkip_seq(__le64 le_pn, struct ieee80211_key_seq *seq)
1594 {
1595 	u64 pn = le64_to_cpu(le_pn);
1596 
1597 	seq->tkip.iv16 = (u16)pn;
1598 	seq->tkip.iv32 = (u32)(pn >> 16);
1599 }
1600 
1601 static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc,
1602 				   struct ieee80211_key_seq *seq)
1603 {
1604 	seq->tkip.iv32 = le32_to_cpu(sc->iv32);
1605 	seq->tkip.iv16 = le16_to_cpu(sc->iv16);
1606 }
1607 
1608 static void iwl_mvm_set_key_rx_seq_tids(struct ieee80211_key_conf *key,
1609 					struct ieee80211_key_seq *seq)
1610 {
1611 	int tid;
1612 
1613 	for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++)
1614 		ieee80211_set_key_rx_seq(key, tid, &seq[tid]);
1615 }
1616 
1617 static void iwl_mvm_set_aes_ptk_rx_seq(struct iwl_mvm *mvm,
1618 				       struct iwl_wowlan_status_data *status,
1619 				       struct ieee80211_sta *sta,
1620 				       struct ieee80211_key_conf *key)
1621 {
1622 	struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1623 	struct iwl_mvm_key_pn *ptk_pn;
1624 	int tid;
1625 
1626 	iwl_mvm_set_key_rx_seq_tids(key, status->ptk.aes.seq);
1627 
1628 	if (!iwl_mvm_has_new_rx_api(mvm))
1629 		return;
1630 
1631 
1632 	rcu_read_lock();
1633 	ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]);
1634 	if (WARN_ON(!ptk_pn)) {
1635 		rcu_read_unlock();
1636 		return;
1637 	}
1638 
1639 	for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1640 		int i;
1641 
1642 		for (i = 1; i < mvm->trans->num_rx_queues; i++)
1643 			memcpy(ptk_pn->q[i].pn[tid],
1644 			       status->ptk.aes.seq[tid].ccmp.pn,
1645 			       IEEE80211_CCMP_PN_LEN);
1646 	}
1647 	rcu_read_unlock();
1648 }
1649 
1650 static void iwl_mvm_convert_key_counters(struct iwl_wowlan_status_data *status,
1651 					 union iwl_all_tsc_rsc *sc)
1652 {
1653 	int i;
1654 
1655 	BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT);
1656 	BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC);
1657 
1658 	/* GTK RX counters */
1659 	for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1660 		iwl_mvm_tkip_sc_to_seq(&sc->tkip.multicast_rsc[i],
1661 				       &status->gtk_seq[0].tkip.seq[i]);
1662 		iwl_mvm_aes_sc_to_seq(&sc->aes.multicast_rsc[i],
1663 				      &status->gtk_seq[0].aes.seq[i]);
1664 	}
1665 	status->gtk_seq[0].valid = true;
1666 	status->gtk_seq[0].key_id = -1;
1667 
1668 	/* PTK TX counter */
1669 	status->ptk.tkip.tx_pn = (u64)le16_to_cpu(sc->tkip.tsc.iv16) |
1670 				 ((u64)le32_to_cpu(sc->tkip.tsc.iv32) << 16);
1671 	status->ptk.aes.tx_pn = le64_to_cpu(sc->aes.tsc.pn);
1672 
1673 	/* PTK RX counters */
1674 	for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1675 		iwl_mvm_tkip_sc_to_seq(&sc->tkip.unicast_rsc[i],
1676 				       &status->ptk.tkip.seq[i]);
1677 		iwl_mvm_aes_sc_to_seq(&sc->aes.unicast_rsc[i],
1678 				      &status->ptk.aes.seq[i]);
1679 	}
1680 }
1681 
1682 static void
1683 iwl_mvm_convert_key_counters_v5_gtk_seq(struct iwl_wowlan_status_data *status,
1684 					struct iwl_wowlan_all_rsc_tsc_v5 *sc,
1685 					unsigned int idx, unsigned int key_id)
1686 {
1687 	int tid;
1688 
1689 	for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1690 		iwl_mvm_le64_to_tkip_seq(sc->mcast_rsc[idx][tid],
1691 					 &status->gtk_seq[idx].tkip.seq[tid]);
1692 		iwl_mvm_le64_to_aes_seq(sc->mcast_rsc[idx][tid],
1693 					&status->gtk_seq[idx].aes.seq[tid]);
1694 	}
1695 
1696 	status->gtk_seq[idx].valid = true;
1697 	status->gtk_seq[idx].key_id = key_id;
1698 }
1699 
1700 static void
1701 iwl_mvm_convert_key_counters_v5(struct iwl_wowlan_status_data *status,
1702 				struct iwl_wowlan_all_rsc_tsc_v5 *sc)
1703 {
1704 	int i, tid;
1705 
1706 	BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT);
1707 	BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC);
1708 	BUILD_BUG_ON(ARRAY_SIZE(sc->mcast_rsc) != ARRAY_SIZE(status->gtk_seq));
1709 
1710 	/* GTK RX counters */
1711 	for (i = 0; i < ARRAY_SIZE(sc->mcast_key_id_map); i++) {
1712 		u8 entry = sc->mcast_key_id_map[i];
1713 
1714 		if (entry < ARRAY_SIZE(sc->mcast_rsc))
1715 			iwl_mvm_convert_key_counters_v5_gtk_seq(status, sc,
1716 								entry, i);
1717 	}
1718 
1719 	/* PTK TX counters not needed, assigned in device */
1720 
1721 	/* PTK RX counters */
1722 	for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1723 		iwl_mvm_le64_to_tkip_seq(sc->ucast_rsc[tid],
1724 					 &status->ptk.tkip.seq[tid]);
1725 		iwl_mvm_le64_to_aes_seq(sc->ucast_rsc[tid],
1726 					&status->ptk.aes.seq[tid]);
1727 	}
1728 }
1729 
1730 static void iwl_mvm_set_key_rx_seq_idx(struct ieee80211_key_conf *key,
1731 				       struct iwl_wowlan_status_data *status,
1732 				       int idx)
1733 {
1734 	switch (key->cipher) {
1735 	case WLAN_CIPHER_SUITE_CCMP:
1736 	case WLAN_CIPHER_SUITE_GCMP:
1737 	case WLAN_CIPHER_SUITE_GCMP_256:
1738 		iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].aes.seq);
1739 		break;
1740 	case WLAN_CIPHER_SUITE_TKIP:
1741 		iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].tkip.seq);
1742 		break;
1743 	default:
1744 		WARN_ON(1);
1745 	}
1746 }
1747 
1748 static void iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf *key,
1749 				   struct iwl_wowlan_status_data *status,
1750 				   bool installed)
1751 {
1752 	int i;
1753 
1754 	for (i = 0; i < ARRAY_SIZE(status->gtk_seq); i++) {
1755 		if (!status->gtk_seq[i].valid)
1756 			continue;
1757 
1758 		/* Handle the case where we know the key ID */
1759 		if (status->gtk_seq[i].key_id == key->keyidx) {
1760 			s8 new_key_id = -1;
1761 
1762 			if (status->num_of_gtk_rekeys)
1763 				new_key_id = status->gtk[0].flags &
1764 						IWL_WOWLAN_GTK_IDX_MASK;
1765 
1766 			/* Don't install a new key's value to an old key */
1767 			if (new_key_id != key->keyidx)
1768 				iwl_mvm_set_key_rx_seq_idx(key, status, i);
1769 			continue;
1770 		}
1771 
1772 		/* handle the case where we didn't, last key only */
1773 		if (status->gtk_seq[i].key_id == -1 &&
1774 		    (!status->num_of_gtk_rekeys || installed))
1775 			iwl_mvm_set_key_rx_seq_idx(key, status, i);
1776 	}
1777 }
1778 
1779 struct iwl_mvm_d3_gtk_iter_data {
1780 	struct iwl_mvm *mvm;
1781 	struct iwl_wowlan_status_data *status;
1782 	u32 gtk_cipher, igtk_cipher;
1783 	bool unhandled_cipher, igtk_support;
1784 	int num_keys;
1785 };
1786 
1787 static void iwl_mvm_d3_find_last_keys(struct ieee80211_hw *hw,
1788 				      struct ieee80211_vif *vif,
1789 				      struct ieee80211_sta *sta,
1790 				      struct ieee80211_key_conf *key,
1791 				      void *_data)
1792 {
1793 	struct iwl_mvm_d3_gtk_iter_data *data = _data;
1794 
1795 	if (data->unhandled_cipher)
1796 		return;
1797 
1798 	switch (key->cipher) {
1799 	case WLAN_CIPHER_SUITE_WEP40:
1800 	case WLAN_CIPHER_SUITE_WEP104:
1801 		/* ignore WEP completely, nothing to do */
1802 		return;
1803 	case WLAN_CIPHER_SUITE_CCMP:
1804 	case WLAN_CIPHER_SUITE_GCMP:
1805 	case WLAN_CIPHER_SUITE_GCMP_256:
1806 	case WLAN_CIPHER_SUITE_TKIP:
1807 		/* we support these */
1808 		data->gtk_cipher = key->cipher;
1809 		break;
1810 	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
1811 	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
1812 	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
1813 	case WLAN_CIPHER_SUITE_AES_CMAC:
1814 		/* we support these */
1815 		if (data->igtk_support &&
1816 		    (key->keyidx == 4 || key->keyidx == 5)) {
1817 			data->igtk_cipher = key->cipher;
1818 		} else {
1819 			data->unhandled_cipher = true;
1820 			return;
1821 		}
1822 		break;
1823 	default:
1824 		/* everything else - disconnect from AP */
1825 		data->unhandled_cipher = true;
1826 		return;
1827 	}
1828 
1829 	data->num_keys++;
1830 }
1831 
1832 static void
1833 iwl_mvm_d3_set_igtk_bigtk_ipn(const struct iwl_multicast_key_data *key,
1834 			      struct ieee80211_key_seq *seq, u32 cipher)
1835 {
1836 	switch (cipher) {
1837 	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
1838 	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
1839 		BUILD_BUG_ON(sizeof(seq->aes_gmac.pn) != sizeof(key->ipn));
1840 		memcpy(seq->aes_gmac.pn, key->ipn, sizeof(seq->aes_gmac.pn));
1841 		break;
1842 	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
1843 		BUILD_BUG_ON(sizeof(seq->aes_cmac.pn) != sizeof(key->ipn));
1844 		memcpy(seq->aes_cmac.pn, key->ipn, sizeof(seq->aes_cmac.pn));
1845 		break;
1846 	}
1847 }
1848 
1849 static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw,
1850 				   struct ieee80211_vif *vif,
1851 				   struct ieee80211_sta *sta,
1852 				   struct ieee80211_key_conf *key,
1853 				   void *_data)
1854 {
1855 	struct iwl_mvm_d3_gtk_iter_data *data = _data;
1856 	struct iwl_wowlan_status_data *status = data->status;
1857 	s8 keyidx;
1858 
1859 	if (data->unhandled_cipher)
1860 		return;
1861 
1862 	switch (key->cipher) {
1863 	case WLAN_CIPHER_SUITE_WEP40:
1864 	case WLAN_CIPHER_SUITE_WEP104:
1865 		/* ignore WEP completely, nothing to do */
1866 		return;
1867 	case WLAN_CIPHER_SUITE_CCMP:
1868 	case WLAN_CIPHER_SUITE_GCMP:
1869 	case WLAN_CIPHER_SUITE_GCMP_256:
1870 		if (sta) {
1871 			atomic64_set(&key->tx_pn, status->ptk.aes.tx_pn);
1872 			iwl_mvm_set_aes_ptk_rx_seq(data->mvm, status, sta, key);
1873 			return;
1874 		}
1875 		fallthrough;
1876 	case WLAN_CIPHER_SUITE_TKIP:
1877 		if (sta) {
1878 			atomic64_set(&key->tx_pn, status->ptk.tkip.tx_pn);
1879 			iwl_mvm_set_key_rx_seq_tids(key, status->ptk.tkip.seq);
1880 			return;
1881 		}
1882 		keyidx = key->keyidx;
1883 		/* The current key is always sent by the FW, even if it wasn't
1884 		 * rekeyed during D3.
1885 		 * We remove an existing key if it has the same index as
1886 		 * a new key
1887 		 */
1888 		if (status->num_of_gtk_rekeys &&
1889 		    ((status->gtk[0].len && keyidx == status->gtk[0].id) ||
1890 		     (status->gtk[1].len && keyidx == status->gtk[1].id))) {
1891 			ieee80211_remove_key(key);
1892 		} else {
1893 			iwl_mvm_set_key_rx_seq(key, data->status, false);
1894 		}
1895 		break;
1896 	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
1897 	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
1898 	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
1899 	case WLAN_CIPHER_SUITE_AES_CMAC:
1900 		if (key->keyidx == 4 || key->keyidx == 5) {
1901 			/* remove rekeyed key */
1902 			if (status->num_of_gtk_rekeys) {
1903 				ieee80211_remove_key(key);
1904 			} else {
1905 				struct ieee80211_key_seq seq;
1906 
1907 				iwl_mvm_d3_set_igtk_bigtk_ipn(&status->igtk,
1908 							      &seq,
1909 							      key->cipher);
1910 				ieee80211_set_key_rx_seq(key, 0, &seq);
1911 			}
1912 		}
1913 	}
1914 }
1915 
1916 static bool iwl_mvm_gtk_rekey(struct iwl_wowlan_status_data *status,
1917 			      struct ieee80211_vif *vif,
1918 			      struct iwl_mvm *mvm, u32 gtk_cipher)
1919 {
1920 	int i;
1921 	struct ieee80211_key_conf *key;
1922 	struct {
1923 		struct ieee80211_key_conf conf;
1924 		u8 key[32];
1925 	} conf = {
1926 		.conf.cipher = gtk_cipher,
1927 	};
1928 
1929 	BUILD_BUG_ON(WLAN_KEY_LEN_CCMP != WLAN_KEY_LEN_GCMP);
1930 	BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_CCMP);
1931 	BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_GCMP_256);
1932 	BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_TKIP);
1933 	BUILD_BUG_ON(sizeof(conf.key) < sizeof(status->gtk[0].key));
1934 
1935 	switch (gtk_cipher) {
1936 	case WLAN_CIPHER_SUITE_CCMP:
1937 	case WLAN_CIPHER_SUITE_GCMP:
1938 		conf.conf.keylen = WLAN_KEY_LEN_CCMP;
1939 		break;
1940 	case WLAN_CIPHER_SUITE_GCMP_256:
1941 		conf.conf.keylen = WLAN_KEY_LEN_GCMP_256;
1942 		break;
1943 	case WLAN_CIPHER_SUITE_TKIP:
1944 		conf.conf.keylen = WLAN_KEY_LEN_TKIP;
1945 		break;
1946 	default:
1947 		WARN_ON(1);
1948 	}
1949 
1950 	for (i = 0; i < ARRAY_SIZE(status->gtk); i++) {
1951 		if (!status->gtk[i].len)
1952 			continue;
1953 
1954 		conf.conf.keyidx = status->gtk[i].id;
1955 		IWL_DEBUG_WOWLAN(mvm,
1956 				 "Received from FW GTK cipher %d, key index %d\n",
1957 				 conf.conf.cipher, conf.conf.keyidx);
1958 		memcpy(conf.conf.key, status->gtk[i].key,
1959 		       sizeof(status->gtk[i].key));
1960 
1961 		key = ieee80211_gtk_rekey_add(vif, &conf.conf);
1962 		if (IS_ERR(key))
1963 			return false;
1964 		iwl_mvm_set_key_rx_seq_idx(key, status, i);
1965 	}
1966 
1967 	return true;
1968 }
1969 
1970 static bool
1971 iwl_mvm_d3_igtk_bigtk_rekey_add(struct iwl_wowlan_status_data *status,
1972 				struct ieee80211_vif *vif, u32 cipher,
1973 				struct iwl_multicast_key_data *key_data)
1974 {
1975 	struct ieee80211_key_conf *key_config;
1976 	struct {
1977 		struct ieee80211_key_conf conf;
1978 		u8 key[WOWLAN_KEY_MAX_SIZE];
1979 	} conf = {
1980 		.conf.cipher = cipher,
1981 		.conf.keyidx = key_data->id,
1982 	};
1983 	struct ieee80211_key_seq seq;
1984 
1985 	if (!key_data->len)
1986 		return true;
1987 
1988 	iwl_mvm_d3_set_igtk_bigtk_ipn(key_data, &seq, conf.conf.cipher);
1989 
1990 	switch (cipher) {
1991 	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
1992 		conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_128;
1993 		break;
1994 	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
1995 		conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_256;
1996 		break;
1997 	case WLAN_CIPHER_SUITE_AES_CMAC:
1998 		conf.conf.keylen = WLAN_KEY_LEN_AES_CMAC;
1999 		break;
2000 	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
2001 		conf.conf.keylen = WLAN_KEY_LEN_BIP_CMAC_256;
2002 		break;
2003 	default:
2004 		WARN_ON(1);
2005 	}
2006 	BUILD_BUG_ON(sizeof(conf.key) < sizeof(key_data->key));
2007 	memcpy(conf.conf.key, key_data->key, conf.conf.keylen);
2008 
2009 	key_config = ieee80211_gtk_rekey_add(vif, &conf.conf);
2010 	if (IS_ERR(key_config))
2011 		return false;
2012 	ieee80211_set_key_rx_seq(key_config, 0, &seq);
2013 
2014 	if (key_config->keyidx == 4 || key_config->keyidx == 5) {
2015 		struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2016 		int link_id = vif->active_links ? __ffs(vif->active_links) : 0;
2017 		struct iwl_mvm_vif_link_info *mvm_link =
2018 			mvmvif->link[link_id];
2019 
2020 		mvm_link->igtk = key_config;
2021 	}
2022 
2023 	return true;
2024 }
2025 
2026 static int iwl_mvm_lookup_wowlan_status_ver(struct iwl_mvm *mvm)
2027 {
2028 	u8 notif_ver;
2029 
2030 	if (!fw_has_api(&mvm->fw->ucode_capa,
2031 			IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL))
2032 		return 6;
2033 
2034 	/* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */
2035 	notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP,
2036 					    WOWLAN_GET_STATUSES, 0);
2037 	if (!notif_ver)
2038 		notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
2039 						    WOWLAN_GET_STATUSES, 7);
2040 
2041 	return notif_ver;
2042 }
2043 
2044 static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm,
2045 					  struct ieee80211_vif *vif,
2046 					  struct iwl_wowlan_status_data *status)
2047 {
2048 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2049 	struct iwl_mvm_d3_gtk_iter_data gtkdata = {
2050 		.mvm = mvm,
2051 		.status = status,
2052 	};
2053 	u32 disconnection_reasons =
2054 		IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
2055 		IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH;
2056 
2057 	if (!status || !vif->bss_conf.bssid)
2058 		return false;
2059 
2060 	if (status->wakeup_reasons & disconnection_reasons)
2061 		return false;
2062 
2063 	if (iwl_mvm_lookup_wowlan_status_ver(mvm) > 6 ||
2064 	    iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
2065 				    WOWLAN_INFO_NOTIFICATION,
2066 				    0))
2067 		gtkdata.igtk_support = true;
2068 
2069 	/* find last GTK that we used initially, if any */
2070 	ieee80211_iter_keys(mvm->hw, vif,
2071 			    iwl_mvm_d3_find_last_keys, &gtkdata);
2072 	/* not trying to keep connections with MFP/unhandled ciphers */
2073 	if (gtkdata.unhandled_cipher)
2074 		return false;
2075 	if (!gtkdata.num_keys)
2076 		goto out;
2077 
2078 	/*
2079 	 * invalidate all other GTKs that might still exist and update
2080 	 * the one that we used
2081 	 */
2082 	ieee80211_iter_keys(mvm->hw, vif,
2083 			    iwl_mvm_d3_update_keys, &gtkdata);
2084 
2085 	if (status->num_of_gtk_rekeys) {
2086 		__be64 replay_ctr = cpu_to_be64(status->replay_ctr);
2087 
2088 		IWL_DEBUG_WOWLAN(mvm, "num of GTK rekeying %d\n",
2089 				 status->num_of_gtk_rekeys);
2090 
2091 		if (!iwl_mvm_gtk_rekey(status, vif, mvm, gtkdata.gtk_cipher))
2092 			return false;
2093 
2094 		if (!iwl_mvm_d3_igtk_bigtk_rekey_add(status, vif,
2095 						     gtkdata.igtk_cipher,
2096 						     &status->igtk))
2097 			return false;
2098 
2099 		ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid,
2100 					   (void *)&replay_ctr, GFP_KERNEL);
2101 	}
2102 
2103 out:
2104 	if (iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP,
2105 				    WOWLAN_GET_STATUSES, 0) < 10) {
2106 		mvmvif->seqno_valid = true;
2107 		/* +0x10 because the set API expects next-to-use, not last-used */
2108 		mvmvif->seqno = status->non_qos_seq_ctr + 0x10;
2109 	}
2110 
2111 	return true;
2112 }
2113 
2114 static void iwl_mvm_convert_gtk_v2(struct iwl_wowlan_status_data *status,
2115 				   struct iwl_wowlan_gtk_status_v2 *data)
2116 {
2117 	BUILD_BUG_ON(sizeof(status->gtk[0].key) < sizeof(data->key));
2118 	BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY +
2119 		     sizeof(data->tkip_mic_key) >
2120 		     sizeof(status->gtk[0].key));
2121 
2122 	status->gtk[0].len = data->key_len;
2123 	status->gtk[0].flags = data->key_flags;
2124 
2125 	memcpy(status->gtk[0].key, data->key, sizeof(data->key));
2126 
2127 	/* if it's as long as the TKIP encryption key, copy MIC key */
2128 	if (status->gtk[0].len == NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY)
2129 		memcpy(status->gtk[0].key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
2130 		       data->tkip_mic_key, sizeof(data->tkip_mic_key));
2131 }
2132 
2133 static void iwl_mvm_convert_gtk_v3(struct iwl_wowlan_status_data *status,
2134 				   struct iwl_wowlan_gtk_status_v3 *data)
2135 {
2136 	int data_idx, status_idx = 0;
2137 
2138 	BUILD_BUG_ON(sizeof(status->gtk[0].key) < sizeof(data[0].key));
2139 	BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY +
2140 		     sizeof(data[0].tkip_mic_key) >
2141 		     sizeof(status->gtk[0].key));
2142 	BUILD_BUG_ON(ARRAY_SIZE(status->gtk) < WOWLAN_GTK_KEYS_NUM);
2143 	for (data_idx = 0; data_idx < ARRAY_SIZE(status->gtk); data_idx++) {
2144 		if (!(data[data_idx].key_len))
2145 			continue;
2146 		status->gtk[status_idx].len = data[data_idx].key_len;
2147 		status->gtk[status_idx].flags = data[data_idx].key_flags;
2148 		status->gtk[status_idx].id = status->gtk[status_idx].flags &
2149 				    IWL_WOWLAN_GTK_IDX_MASK;
2150 
2151 		memcpy(status->gtk[status_idx].key, data[data_idx].key,
2152 		       sizeof(data[data_idx].key));
2153 
2154 		/* if it's as long as the TKIP encryption key, copy MIC key */
2155 		if (status->gtk[status_idx].len ==
2156 		    NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY)
2157 			memcpy(status->gtk[status_idx].key +
2158 			       NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
2159 			       data[data_idx].tkip_mic_key,
2160 			       sizeof(data[data_idx].tkip_mic_key));
2161 		status_idx++;
2162 	}
2163 }
2164 
2165 static void iwl_mvm_convert_igtk(struct iwl_wowlan_status_data *status,
2166 				 struct iwl_wowlan_igtk_status *data)
2167 {
2168 	int i;
2169 
2170 	BUILD_BUG_ON(sizeof(status->igtk.key) < sizeof(data->key));
2171 	BUILD_BUG_ON(sizeof(status->igtk.ipn) != sizeof(data->ipn));
2172 
2173 	if (!data->key_len)
2174 		return;
2175 
2176 	status->igtk.len = data->key_len;
2177 	status->igtk.flags = data->key_flags;
2178 	status->igtk.id = u32_get_bits(data->key_flags,
2179 				       IWL_WOWLAN_IGTK_BIGTK_IDX_MASK)
2180 		+ WOWLAN_IGTK_MIN_INDEX;
2181 
2182 	memcpy(status->igtk.key, data->key, sizeof(data->key));
2183 
2184 	/* mac80211 expects big endian for memcmp() to work, convert */
2185 	for (i = 0; i < sizeof(data->ipn); i++)
2186 		status->igtk.ipn[i] = data->ipn[sizeof(data->ipn) - i - 1];
2187 }
2188 
2189 static void iwl_mvm_parse_wowlan_info_notif(struct iwl_mvm *mvm,
2190 					    struct iwl_wowlan_info_notif *data,
2191 					    struct iwl_wowlan_status_data *status,
2192 					    u32 len)
2193 {
2194 	u32 i;
2195 
2196 	if (!data) {
2197 		IWL_ERR(mvm, "iwl_wowlan_info_notif data is NULL\n");
2198 		status = NULL;
2199 		return;
2200 	}
2201 
2202 	if (len < sizeof(*data)) {
2203 		IWL_ERR(mvm, "Invalid WoWLAN info notification!\n");
2204 		status = NULL;
2205 		return;
2206 	}
2207 
2208 	iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc);
2209 	iwl_mvm_convert_gtk_v3(status, data->gtk);
2210 	iwl_mvm_convert_igtk(status, &data->igtk[0]);
2211 
2212 	status->replay_ctr = le64_to_cpu(data->replay_ctr);
2213 	status->pattern_number = le16_to_cpu(data->pattern_number);
2214 	for (i = 0; i < IWL_MAX_TID_COUNT; i++)
2215 		status->qos_seq_ctr[i] =
2216 			le16_to_cpu(data->qos_seq_ctr[i]);
2217 	status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons);
2218 	status->num_of_gtk_rekeys =
2219 		le32_to_cpu(data->num_of_gtk_rekeys);
2220 	status->received_beacons = le32_to_cpu(data->received_beacons);
2221 	status->tid_tear_down = data->tid_tear_down;
2222 }
2223 
2224 /* Occasionally, templates would be nice. This is one of those times ... */
2225 #define iwl_mvm_parse_wowlan_status_common(_ver)			\
2226 static struct iwl_wowlan_status_data *					\
2227 iwl_mvm_parse_wowlan_status_common_ ## _ver(struct iwl_mvm *mvm,	\
2228 					    struct iwl_wowlan_status_ ##_ver *data,\
2229 					    int len)			\
2230 {									\
2231 	struct iwl_wowlan_status_data *status;				\
2232 	int data_size, i;						\
2233 									\
2234 	if (len < sizeof(*data)) {					\
2235 		IWL_ERR(mvm, "Invalid WoWLAN status response!\n");	\
2236 		return NULL;						\
2237 	}								\
2238 									\
2239 	data_size = ALIGN(le32_to_cpu(data->wake_packet_bufsize), 4);	\
2240 	if (len != sizeof(*data) + data_size) {				\
2241 		IWL_ERR(mvm, "Invalid WoWLAN status response!\n");	\
2242 		return NULL;						\
2243 	}								\
2244 									\
2245 	status = kzalloc(sizeof(*status), GFP_KERNEL);			\
2246 	if (!status)							\
2247 		return NULL;						\
2248 									\
2249 	/* copy all the common fields */				\
2250 	status->replay_ctr = le64_to_cpu(data->replay_ctr);		\
2251 	status->pattern_number = le16_to_cpu(data->pattern_number);	\
2252 	status->non_qos_seq_ctr = le16_to_cpu(data->non_qos_seq_ctr);	\
2253 	for (i = 0; i < 8; i++)						\
2254 		status->qos_seq_ctr[i] =				\
2255 			le16_to_cpu(data->qos_seq_ctr[i]);		\
2256 	status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons);	\
2257 	status->num_of_gtk_rekeys =					\
2258 		le32_to_cpu(data->num_of_gtk_rekeys);			\
2259 	status->received_beacons = le32_to_cpu(data->received_beacons);	\
2260 	status->wake_packet_length =					\
2261 		le32_to_cpu(data->wake_packet_length);			\
2262 	status->wake_packet_bufsize =					\
2263 		le32_to_cpu(data->wake_packet_bufsize);			\
2264 	if (status->wake_packet_bufsize) {				\
2265 		status->wake_packet =					\
2266 			kmemdup(data->wake_packet,			\
2267 				status->wake_packet_bufsize,		\
2268 				GFP_KERNEL);				\
2269 		if (!status->wake_packet) {				\
2270 			kfree(status);					\
2271 			return NULL;					\
2272 		}							\
2273 	} else {							\
2274 		status->wake_packet = NULL;				\
2275 	}								\
2276 									\
2277 	return status;							\
2278 }
2279 
2280 iwl_mvm_parse_wowlan_status_common(v6)
2281 iwl_mvm_parse_wowlan_status_common(v7)
2282 iwl_mvm_parse_wowlan_status_common(v9)
2283 iwl_mvm_parse_wowlan_status_common(v12)
2284 
2285 static struct iwl_wowlan_status_data *
2286 iwl_mvm_send_wowlan_get_status(struct iwl_mvm *mvm, u8 sta_id)
2287 {
2288 	struct iwl_wowlan_status_data *status;
2289 	struct iwl_wowlan_get_status_cmd get_status_cmd = {
2290 		.sta_id = cpu_to_le32(sta_id),
2291 	};
2292 	struct iwl_host_cmd cmd = {
2293 		.id = WOWLAN_GET_STATUSES,
2294 		.flags = CMD_WANT_SKB,
2295 		.data = { &get_status_cmd, },
2296 		.len = { sizeof(get_status_cmd), },
2297 	};
2298 	int ret, len;
2299 	u8 notif_ver;
2300 	u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id,
2301 					   IWL_FW_CMD_VER_UNKNOWN);
2302 
2303 	if (cmd_ver == IWL_FW_CMD_VER_UNKNOWN)
2304 		cmd.len[0] = 0;
2305 
2306 	lockdep_assert_held(&mvm->mutex);
2307 
2308 	ret = iwl_mvm_send_cmd(mvm, &cmd);
2309 	if (ret) {
2310 		IWL_ERR(mvm, "failed to query wakeup status (%d)\n", ret);
2311 		return ERR_PTR(ret);
2312 	}
2313 
2314 	len = iwl_rx_packet_payload_len(cmd.resp_pkt);
2315 
2316 	/* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */
2317 	notif_ver = iwl_mvm_lookup_wowlan_status_ver(mvm);
2318 
2319 	if (notif_ver < 7) {
2320 		struct iwl_wowlan_status_v6 *v6 = (void *)cmd.resp_pkt->data;
2321 
2322 		status = iwl_mvm_parse_wowlan_status_common_v6(mvm, v6, len);
2323 		if (!status)
2324 			goto out_free_resp;
2325 
2326 		BUILD_BUG_ON(sizeof(v6->gtk.decrypt_key) >
2327 			     sizeof(status->gtk[0].key));
2328 		BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY +
2329 			     sizeof(v6->gtk.tkip_mic_key) >
2330 			     sizeof(status->gtk[0].key));
2331 
2332 		/* copy GTK info to the right place */
2333 		memcpy(status->gtk[0].key, v6->gtk.decrypt_key,
2334 		       sizeof(v6->gtk.decrypt_key));
2335 		memcpy(status->gtk[0].key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
2336 		       v6->gtk.tkip_mic_key,
2337 		       sizeof(v6->gtk.tkip_mic_key));
2338 
2339 		iwl_mvm_convert_key_counters(status, &v6->gtk.rsc.all_tsc_rsc);
2340 
2341 		/* hardcode the key length to 16 since v6 only supports 16 */
2342 		status->gtk[0].len = 16;
2343 
2344 		/*
2345 		 * The key index only uses 2 bits (values 0 to 3) and
2346 		 * we always set bit 7 which means this is the
2347 		 * currently used key.
2348 		 */
2349 		status->gtk[0].flags = v6->gtk.key_index | BIT(7);
2350 	} else if (notif_ver == 7) {
2351 		struct iwl_wowlan_status_v7 *v7 = (void *)cmd.resp_pkt->data;
2352 
2353 		status = iwl_mvm_parse_wowlan_status_common_v7(mvm, v7, len);
2354 		if (!status)
2355 			goto out_free_resp;
2356 
2357 		iwl_mvm_convert_key_counters(status, &v7->gtk[0].rsc.all_tsc_rsc);
2358 		iwl_mvm_convert_gtk_v2(status, &v7->gtk[0]);
2359 		iwl_mvm_convert_igtk(status, &v7->igtk[0]);
2360 	} else if (notif_ver == 9 || notif_ver == 10 || notif_ver == 11) {
2361 		struct iwl_wowlan_status_v9 *v9 = (void *)cmd.resp_pkt->data;
2362 
2363 		/* these three command versions have same layout and size, the
2364 		 * difference is only in a few not used (reserved) fields.
2365 		 */
2366 		status = iwl_mvm_parse_wowlan_status_common_v9(mvm, v9, len);
2367 		if (!status)
2368 			goto out_free_resp;
2369 
2370 		iwl_mvm_convert_key_counters(status, &v9->gtk[0].rsc.all_tsc_rsc);
2371 		iwl_mvm_convert_gtk_v2(status, &v9->gtk[0]);
2372 		iwl_mvm_convert_igtk(status, &v9->igtk[0]);
2373 
2374 		status->tid_tear_down = v9->tid_tear_down;
2375 	} else if (notif_ver == 12) {
2376 		struct iwl_wowlan_status_v12 *v12 = (void *)cmd.resp_pkt->data;
2377 
2378 		status = iwl_mvm_parse_wowlan_status_common_v12(mvm, v12, len);
2379 		if (!status)
2380 			goto out_free_resp;
2381 
2382 		iwl_mvm_convert_key_counters_v5(status, &v12->gtk[0].sc);
2383 		iwl_mvm_convert_gtk_v3(status, v12->gtk);
2384 		iwl_mvm_convert_igtk(status, &v12->igtk[0]);
2385 
2386 		status->tid_tear_down = v12->tid_tear_down;
2387 	} else {
2388 		IWL_ERR(mvm,
2389 			"Firmware advertises unknown WoWLAN status response %d!\n",
2390 			notif_ver);
2391 		status = NULL;
2392 	}
2393 
2394 out_free_resp:
2395 	iwl_free_resp(&cmd);
2396 	return status;
2397 }
2398 
2399 /* releases the MVM mutex */
2400 static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm,
2401 					 struct ieee80211_vif *vif,
2402 					 struct iwl_wowlan_status_data *status)
2403 {
2404 	int i;
2405 	bool keep;
2406 	struct iwl_mvm_sta *mvm_ap_sta;
2407 
2408 	if (!status)
2409 		goto out_unlock;
2410 
2411 	IWL_DEBUG_WOWLAN(mvm, "wakeup reason 0x%x\n",
2412 			 status->wakeup_reasons);
2413 
2414 	/* still at hard-coded place 0 for D3 image */
2415 	mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, 0);
2416 	if (!mvm_ap_sta)
2417 		goto out_unlock;
2418 
2419 	for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
2420 		u16 seq = status->qos_seq_ctr[i];
2421 		/* firmware stores last-used value, we store next value */
2422 		seq += 0x10;
2423 		mvm_ap_sta->tid_data[i].seq_number = seq;
2424 	}
2425 
2426 	if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000) {
2427 		i = mvm->offload_tid;
2428 		iwl_trans_set_q_ptrs(mvm->trans,
2429 				     mvm_ap_sta->tid_data[i].txq_id,
2430 				     mvm_ap_sta->tid_data[i].seq_number >> 4);
2431 	}
2432 
2433 	/* now we have all the data we need, unlock to avoid mac80211 issues */
2434 	mutex_unlock(&mvm->mutex);
2435 
2436 	iwl_mvm_report_wakeup_reasons(mvm, vif, status);
2437 
2438 	keep = iwl_mvm_setup_connection_keep(mvm, vif, status);
2439 
2440 	return keep;
2441 
2442 out_unlock:
2443 	mutex_unlock(&mvm->mutex);
2444 	return false;
2445 }
2446 
2447 #define ND_QUERY_BUF_LEN (sizeof(struct iwl_scan_offload_profile_match) * \
2448 			  IWL_SCAN_MAX_PROFILES)
2449 
2450 struct iwl_mvm_nd_results {
2451 	u32 matched_profiles;
2452 	u8 matches[ND_QUERY_BUF_LEN];
2453 };
2454 
2455 static int
2456 iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm,
2457 				struct iwl_mvm_nd_results *results)
2458 {
2459 	struct iwl_scan_offload_match_info *query;
2460 	struct iwl_host_cmd cmd = {
2461 		.id = SCAN_OFFLOAD_PROFILES_QUERY_CMD,
2462 		.flags = CMD_WANT_SKB,
2463 	};
2464 	int ret, len;
2465 	size_t query_len, matches_len;
2466 	int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw);
2467 
2468 	ret = iwl_mvm_send_cmd(mvm, &cmd);
2469 	if (ret) {
2470 		IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret);
2471 		return ret;
2472 	}
2473 
2474 	if (fw_has_api(&mvm->fw->ucode_capa,
2475 		       IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2476 		query_len = sizeof(struct iwl_scan_offload_match_info);
2477 		matches_len = sizeof(struct iwl_scan_offload_profile_match) *
2478 			max_profiles;
2479 	} else {
2480 		query_len = sizeof(struct iwl_scan_offload_profiles_query_v1);
2481 		matches_len = sizeof(struct iwl_scan_offload_profile_match_v1) *
2482 			max_profiles;
2483 	}
2484 
2485 	len = iwl_rx_packet_payload_len(cmd.resp_pkt);
2486 	if (len < query_len) {
2487 		IWL_ERR(mvm, "Invalid scan offload profiles query response!\n");
2488 		ret = -EIO;
2489 		goto out_free_resp;
2490 	}
2491 
2492 	query = (void *)cmd.resp_pkt->data;
2493 
2494 	results->matched_profiles = le32_to_cpu(query->matched_profiles);
2495 	memcpy(results->matches, query->matches, matches_len);
2496 
2497 #ifdef CONFIG_IWLWIFI_DEBUGFS
2498 	mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done);
2499 #endif
2500 
2501 out_free_resp:
2502 	iwl_free_resp(&cmd);
2503 	return ret;
2504 }
2505 
2506 static int iwl_mvm_query_num_match_chans(struct iwl_mvm *mvm,
2507 					 struct iwl_mvm_nd_results *results,
2508 					 int idx)
2509 {
2510 	int n_chans = 0, i;
2511 
2512 	if (fw_has_api(&mvm->fw->ucode_capa,
2513 		       IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2514 		struct iwl_scan_offload_profile_match *matches =
2515 			(void *)results->matches;
2516 
2517 		for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; i++)
2518 			n_chans += hweight8(matches[idx].matching_channels[i]);
2519 	} else {
2520 		struct iwl_scan_offload_profile_match_v1 *matches =
2521 			(void *)results->matches;
2522 
2523 		for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1; i++)
2524 			n_chans += hweight8(matches[idx].matching_channels[i]);
2525 	}
2526 
2527 	return n_chans;
2528 }
2529 
2530 static void iwl_mvm_query_set_freqs(struct iwl_mvm *mvm,
2531 				    struct iwl_mvm_nd_results *results,
2532 				    struct cfg80211_wowlan_nd_match *match,
2533 				    int idx)
2534 {
2535 	int i;
2536 
2537 	if (fw_has_api(&mvm->fw->ucode_capa,
2538 		       IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2539 		struct iwl_scan_offload_profile_match *matches =
2540 			 (void *)results->matches;
2541 
2542 		for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; i++)
2543 			if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
2544 				match->channels[match->n_channels++] =
2545 					mvm->nd_channels[i]->center_freq;
2546 	} else {
2547 		struct iwl_scan_offload_profile_match_v1 *matches =
2548 			 (void *)results->matches;
2549 
2550 		for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1 * 8; i++)
2551 			if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
2552 				match->channels[match->n_channels++] =
2553 					mvm->nd_channels[i]->center_freq;
2554 	}
2555 }
2556 
2557 /**
2558  * enum iwl_d3_notif - d3 notifications
2559  * @IWL_D3_NOTIF_WOWLAN_INFO: WOWLAN_INFO_NOTIF was received
2560  * @IWL_D3_NOTIF_WOWLAN_WAKE_PKT: WOWLAN_WAKE_PKT_NOTIF was received
2561  * @IWL_D3_NOTIF_PROT_OFFLOAD: PROT_OFFLOAD_NOTIF was received
2562  * @IWL_D3_ND_MATCH_INFO: OFFLOAD_MATCH_INFO_NOTIF was received
2563  * @IWL_D3_NOTIF_D3_END_NOTIF: D3_END_NOTIF was received
2564  */
2565 enum iwl_d3_notif {
2566 	IWL_D3_NOTIF_WOWLAN_INFO =	BIT(0),
2567 	IWL_D3_NOTIF_WOWLAN_WAKE_PKT =	BIT(1),
2568 	IWL_D3_NOTIF_PROT_OFFLOAD =	BIT(2),
2569 	IWL_D3_ND_MATCH_INFO      =     BIT(3),
2570 	IWL_D3_NOTIF_D3_END_NOTIF =	BIT(4)
2571 };
2572 
2573 /* manage d3 resume data */
2574 struct iwl_d3_data {
2575 	struct iwl_wowlan_status_data *status;
2576 	bool test;
2577 	u32 d3_end_flags;
2578 	u32 notif_expected;	/* bitmap - see &enum iwl_d3_notif */
2579 	u32 notif_received;	/* bitmap - see &enum iwl_d3_notif */
2580 	struct iwl_mvm_nd_results *nd_results;
2581 	bool nd_results_valid;
2582 };
2583 
2584 static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm,
2585 					    struct ieee80211_vif *vif,
2586 					    struct iwl_d3_data *d3_data)
2587 {
2588 	struct cfg80211_wowlan_nd_info *net_detect = NULL;
2589 	struct cfg80211_wowlan_wakeup wakeup = {
2590 		.pattern_idx = -1,
2591 	};
2592 	struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
2593 	unsigned long matched_profiles;
2594 	u32 reasons = 0;
2595 	int i, n_matches, ret;
2596 
2597 	if (WARN_ON(!d3_data || !d3_data->status))
2598 		goto out;
2599 
2600 	reasons = d3_data->status->wakeup_reasons;
2601 
2602 	if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
2603 		wakeup.rfkill_release = true;
2604 
2605 	if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS)
2606 		goto out;
2607 
2608 	if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
2609 				     WOWLAN_INFO_NOTIFICATION, 0)) {
2610 		IWL_INFO(mvm, "Query FW for ND results\n");
2611 		ret = iwl_mvm_netdetect_query_results(mvm, d3_data->nd_results);
2612 
2613 	} else {
2614 		IWL_INFO(mvm, "Notification based ND results\n");
2615 		ret = d3_data->nd_results_valid ? 0 : -1;
2616 	}
2617 
2618 	if (ret || !d3_data->nd_results->matched_profiles) {
2619 		wakeup_report = NULL;
2620 		goto out;
2621 	}
2622 
2623 	matched_profiles = d3_data->nd_results->matched_profiles;
2624 	if (mvm->n_nd_match_sets) {
2625 		n_matches = hweight_long(matched_profiles);
2626 	} else {
2627 		IWL_ERR(mvm, "no net detect match information available\n");
2628 		n_matches = 0;
2629 	}
2630 
2631 	net_detect = kzalloc(struct_size(net_detect, matches, n_matches),
2632 			     GFP_KERNEL);
2633 	if (!net_detect || !n_matches)
2634 		goto out_report_nd;
2635 
2636 	for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) {
2637 		struct cfg80211_wowlan_nd_match *match;
2638 		int idx, n_channels = 0;
2639 
2640 		n_channels = iwl_mvm_query_num_match_chans(mvm,
2641 							   d3_data->nd_results,
2642 							   i);
2643 
2644 		match = kzalloc(struct_size(match, channels, n_channels),
2645 				GFP_KERNEL);
2646 		if (!match)
2647 			goto out_report_nd;
2648 
2649 		net_detect->matches[net_detect->n_matches++] = match;
2650 
2651 		/* We inverted the order of the SSIDs in the scan
2652 		 * request, so invert the index here.
2653 		 */
2654 		idx = mvm->n_nd_match_sets - i - 1;
2655 		match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len;
2656 		memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid,
2657 		       match->ssid.ssid_len);
2658 
2659 		if (mvm->n_nd_channels < n_channels)
2660 			continue;
2661 
2662 		iwl_mvm_query_set_freqs(mvm, d3_data->nd_results, match, i);
2663 	}
2664 
2665 out_report_nd:
2666 	wakeup.net_detect = net_detect;
2667 out:
2668 	iwl_mvm_free_nd(mvm);
2669 
2670 	mutex_unlock(&mvm->mutex);
2671 	ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
2672 
2673 	if (net_detect) {
2674 		for (i = 0; i < net_detect->n_matches; i++)
2675 			kfree(net_detect->matches[i]);
2676 		kfree(net_detect);
2677 	}
2678 }
2679 
2680 static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac,
2681 				       struct ieee80211_vif *vif)
2682 {
2683 	/* skip the one we keep connection on */
2684 	if (data == vif)
2685 		return;
2686 
2687 	if (vif->type == NL80211_IFTYPE_STATION)
2688 		ieee80211_resume_disconnect(vif);
2689 }
2690 
2691 static bool iwl_mvm_rt_status(struct iwl_trans *trans, u32 base, u32 *err_id)
2692 {
2693 	struct error_table_start {
2694 		/* cf. struct iwl_error_event_table */
2695 		u32 valid;
2696 		__le32 err_id;
2697 	} err_info;
2698 
2699 	if (!base)
2700 		return false;
2701 
2702 	iwl_trans_read_mem_bytes(trans, base,
2703 				 &err_info, sizeof(err_info));
2704 	if (err_info.valid && err_id)
2705 		*err_id = le32_to_cpu(err_info.err_id);
2706 
2707 	return !!err_info.valid;
2708 }
2709 
2710 static bool iwl_mvm_check_rt_status(struct iwl_mvm *mvm,
2711 				   struct ieee80211_vif *vif)
2712 {
2713 	u32 err_id;
2714 
2715 	/* check for lmac1 error */
2716 	if (iwl_mvm_rt_status(mvm->trans,
2717 			      mvm->trans->dbg.lmac_error_event_table[0],
2718 			      &err_id)) {
2719 		if (err_id == RF_KILL_INDICATOR_FOR_WOWLAN) {
2720 			struct cfg80211_wowlan_wakeup wakeup = {
2721 				.rfkill_release = true,
2722 			};
2723 			ieee80211_report_wowlan_wakeup(vif, &wakeup,
2724 						       GFP_KERNEL);
2725 		}
2726 		return true;
2727 	}
2728 
2729 	/* check if we have lmac2 set and check for error */
2730 	if (iwl_mvm_rt_status(mvm->trans,
2731 			      mvm->trans->dbg.lmac_error_event_table[1], NULL))
2732 		return true;
2733 
2734 	/* check for umac error */
2735 	if (iwl_mvm_rt_status(mvm->trans,
2736 			      mvm->trans->dbg.umac_error_event_table, NULL))
2737 		return true;
2738 
2739 	return false;
2740 }
2741 
2742 /*
2743  * This function assumes:
2744  *	1. The mutex is already held.
2745  *	2. The callee functions unlock the mutex.
2746  */
2747 static bool
2748 iwl_mvm_choose_query_wakeup_reasons(struct iwl_mvm *mvm,
2749 				    struct ieee80211_vif *vif,
2750 				    struct iwl_d3_data *d3_data)
2751 {
2752 	lockdep_assert_held(&mvm->mutex);
2753 
2754 	/* if FW uses status notification, status shouldn't be NULL here */
2755 	if (!d3_data->status) {
2756 		struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2757 		u8 sta_id = mvm->net_detect ? IWL_MVM_INVALID_STA :
2758 					      mvmvif->deflink.ap_sta_id;
2759 
2760 		d3_data->status = iwl_mvm_send_wowlan_get_status(mvm, sta_id);
2761 	}
2762 
2763 	if (mvm->net_detect) {
2764 		iwl_mvm_query_netdetect_reasons(mvm, vif, d3_data);
2765 	} else {
2766 		bool keep = iwl_mvm_query_wakeup_reasons(mvm, vif,
2767 							 d3_data->status);
2768 
2769 #ifdef CONFIG_IWLWIFI_DEBUGFS
2770 		if (keep)
2771 			mvm->keep_vif = vif;
2772 #endif
2773 
2774 		return keep;
2775 	}
2776 	return false;
2777 }
2778 
2779 #define IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT (IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET | \
2780 						 IWL_WOWLAN_WAKEUP_BY_PATTERN | \
2781 						 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN |\
2782 						 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN_WILDCARD |\
2783 						 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN |\
2784 						 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN_WILDCARD)
2785 
2786 static int iwl_mvm_wowlan_store_wake_pkt(struct iwl_mvm *mvm,
2787 					 struct iwl_wowlan_wake_pkt_notif *notif,
2788 					 struct iwl_wowlan_status_data *status,
2789 					 u32 len)
2790 {
2791 	u32 data_size, packet_len = le32_to_cpu(notif->wake_packet_length);
2792 
2793 	if (len < sizeof(*notif)) {
2794 		IWL_ERR(mvm, "Invalid WoWLAN wake packet notification!\n");
2795 		return -EIO;
2796 	}
2797 
2798 	if (WARN_ON(!status)) {
2799 		IWL_ERR(mvm, "Got wake packet notification but wowlan status data is NULL\n");
2800 		return -EIO;
2801 	}
2802 
2803 	if (WARN_ON(!(status->wakeup_reasons &
2804 		      IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT))) {
2805 		IWL_ERR(mvm, "Got wakeup packet but wakeup reason is %x\n",
2806 			status->wakeup_reasons);
2807 		return -EIO;
2808 	}
2809 
2810 	data_size = len - offsetof(struct iwl_wowlan_wake_pkt_notif, wake_packet);
2811 
2812 	/* data_size got the padding from the notification, remove it. */
2813 	if (packet_len < data_size)
2814 		data_size = packet_len;
2815 
2816 	status->wake_packet = kmemdup(notif->wake_packet, data_size,
2817 				      GFP_ATOMIC);
2818 
2819 	if (!status->wake_packet)
2820 		return -ENOMEM;
2821 
2822 	status->wake_packet_length = packet_len;
2823 	status->wake_packet_bufsize = data_size;
2824 
2825 	return 0;
2826 }
2827 
2828 static void iwl_mvm_nd_match_info_handler(struct iwl_mvm *mvm,
2829 					  struct iwl_d3_data *d3_data,
2830 					  struct iwl_scan_offload_match_info *notif,
2831 					  u32 len)
2832 {
2833 	struct iwl_wowlan_status_data *status = d3_data->status;
2834 	struct ieee80211_vif *vif = iwl_mvm_get_bss_vif(mvm);
2835 	struct iwl_mvm_nd_results *results = d3_data->nd_results;
2836 	size_t i, matches_len = sizeof(struct iwl_scan_offload_profile_match) *
2837 		iwl_umac_scan_get_max_profiles(mvm->fw);
2838 
2839 	if (IS_ERR_OR_NULL(vif))
2840 		return;
2841 
2842 	if (len < sizeof(struct iwl_scan_offload_match_info)) {
2843 		IWL_ERR(mvm, "Invalid scan match info notification\n");
2844 		return;
2845 	}
2846 
2847 	if (!mvm->net_detect) {
2848 		IWL_ERR(mvm, "Unexpected scan match info notification\n");
2849 		return;
2850 	}
2851 
2852 	if (!status || status->wakeup_reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
2853 		IWL_ERR(mvm,
2854 			"Ignore scan match info notification: no reason\n");
2855 		return;
2856 	}
2857 
2858 #ifdef CONFIG_IWLWIFI_DEBUGFS
2859 	mvm->last_netdetect_scans = le32_to_cpu(notif->n_scans_done);
2860 #endif
2861 
2862 	results->matched_profiles = le32_to_cpu(notif->matched_profiles);
2863 	IWL_INFO(mvm, "number of matched profiles=%u\n",
2864 		 results->matched_profiles);
2865 
2866 	if (results->matched_profiles) {
2867 		memcpy(results->matches, notif->matches, matches_len);
2868 		d3_data->nd_results_valid = TRUE;
2869 	}
2870 
2871 	/* no scan should be active at this point */
2872 	mvm->scan_status = 0;
2873 	for (i = 0; i < mvm->max_scans; i++)
2874 		mvm->scan_uid_status[i] = 0;
2875 }
2876 
2877 static bool iwl_mvm_wait_d3_notif(struct iwl_notif_wait_data *notif_wait,
2878 				  struct iwl_rx_packet *pkt, void *data)
2879 {
2880 	struct iwl_mvm *mvm =
2881 		container_of(notif_wait, struct iwl_mvm, notif_wait);
2882 	struct iwl_d3_data *d3_data = data;
2883 	u32 len;
2884 	int ret;
2885 	int wowlan_info_ver = iwl_fw_lookup_notif_ver(mvm->fw,
2886 						      PROT_OFFLOAD_GROUP,
2887 						      WOWLAN_INFO_NOTIFICATION,
2888 						      IWL_FW_CMD_VER_UNKNOWN);
2889 
2890 
2891 	switch (WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) {
2892 	case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION): {
2893 		struct iwl_wowlan_info_notif *notif;
2894 
2895 		if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_INFO) {
2896 			/* We might get two notifications due to dual bss */
2897 			IWL_DEBUG_WOWLAN(mvm,
2898 					 "Got additional wowlan info notification\n");
2899 			break;
2900 		}
2901 
2902 		if (wowlan_info_ver < 2) {
2903 			struct iwl_wowlan_info_notif_v1 *notif_v1 = (void *)pkt->data;
2904 
2905 			notif = kmemdup(notif_v1, sizeof(*notif), GFP_ATOMIC);
2906 			if (!notif)
2907 				return false;
2908 
2909 			notif->tid_tear_down = notif_v1->tid_tear_down;
2910 			notif->station_id = notif_v1->station_id;
2911 			memset_after(notif, 0, station_id);
2912 		} else {
2913 			notif = (void *)pkt->data;
2914 		}
2915 
2916 		d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_INFO;
2917 		len = iwl_rx_packet_payload_len(pkt);
2918 		iwl_mvm_parse_wowlan_info_notif(mvm, notif, d3_data->status,
2919 						len);
2920 
2921 		if (wowlan_info_ver < 2)
2922 			kfree(notif);
2923 
2924 		if (d3_data->status &&
2925 		    d3_data->status->wakeup_reasons & IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT)
2926 			/* We are supposed to get also wake packet notif */
2927 			d3_data->notif_expected |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT;
2928 
2929 		break;
2930 	}
2931 	case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION): {
2932 		struct iwl_wowlan_wake_pkt_notif *notif = (void *)pkt->data;
2933 
2934 		if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_WAKE_PKT) {
2935 			/* We shouldn't get two wake packet notifications */
2936 			IWL_ERR(mvm,
2937 				"Got additional wowlan wake packet notification\n");
2938 		} else {
2939 			d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT;
2940 			len =  iwl_rx_packet_payload_len(pkt);
2941 			ret = iwl_mvm_wowlan_store_wake_pkt(mvm, notif,
2942 							    d3_data->status,
2943 							    len);
2944 			if (ret)
2945 				IWL_ERR(mvm,
2946 					"Can't parse WOWLAN_WAKE_PKT_NOTIFICATION\n");
2947 		}
2948 
2949 		break;
2950 	}
2951 	case WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF): {
2952 		struct iwl_scan_offload_match_info *notif = (void *)pkt->data;
2953 
2954 		if (d3_data->notif_received & IWL_D3_ND_MATCH_INFO) {
2955 			IWL_ERR(mvm,
2956 				"Got additional netdetect match info\n");
2957 			break;
2958 		}
2959 
2960 		d3_data->notif_received |= IWL_D3_ND_MATCH_INFO;
2961 
2962 		/* explicitly set this in the 'expected' as well */
2963 		d3_data->notif_expected |= IWL_D3_ND_MATCH_INFO;
2964 
2965 		len = iwl_rx_packet_payload_len(pkt);
2966 		iwl_mvm_nd_match_info_handler(mvm, d3_data, notif, len);
2967 		break;
2968 	}
2969 	case WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION): {
2970 		struct iwl_mvm_d3_end_notif *notif = (void *)pkt->data;
2971 
2972 		d3_data->d3_end_flags = __le32_to_cpu(notif->flags);
2973 		d3_data->notif_received |= IWL_D3_NOTIF_D3_END_NOTIF;
2974 
2975 		break;
2976 	}
2977 	default:
2978 		WARN_ON(1);
2979 	}
2980 
2981 	return d3_data->notif_received == d3_data->notif_expected;
2982 }
2983 
2984 static int iwl_mvm_resume_firmware(struct iwl_mvm *mvm, bool test)
2985 {
2986 	int ret;
2987 	enum iwl_d3_status d3_status;
2988 	struct iwl_host_cmd cmd = {
2989 			.id = D0I3_END_CMD,
2990 			.flags = CMD_WANT_SKB | CMD_SEND_IN_D3,
2991 		};
2992 	bool reset = fw_has_capa(&mvm->fw->ucode_capa,
2993 				 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2994 
2995 	ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, !reset);
2996 	if (ret)
2997 		return ret;
2998 
2999 	if (d3_status != IWL_D3_STATUS_ALIVE) {
3000 		IWL_INFO(mvm, "Device was reset during suspend\n");
3001 		return -ENOENT;
3002 	}
3003 
3004 	/*
3005 	 * We should trigger resume flow using command only for 22000 family
3006 	 * AX210 and above don't need the command since they have
3007 	 * the doorbell interrupt.
3008 	 */
3009 	if (mvm->trans->trans_cfg->device_family <= IWL_DEVICE_FAMILY_22000 &&
3010 	    fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_D0I3_END_FIRST)) {
3011 		ret = iwl_mvm_send_cmd(mvm, &cmd);
3012 		if (ret < 0)
3013 			IWL_ERR(mvm, "Failed to send D0I3_END_CMD first (%d)\n",
3014 				ret);
3015 	}
3016 
3017 	return ret;
3018 }
3019 
3020 #define IWL_MVM_D3_NOTIF_TIMEOUT (HZ / 5)
3021 
3022 static int iwl_mvm_d3_notif_wait(struct iwl_mvm *mvm,
3023 				 struct iwl_d3_data *d3_data)
3024 {
3025 	static const u16 d3_resume_notif[] = {
3026 		WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION),
3027 		WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION),
3028 		WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF),
3029 		WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION)
3030 	};
3031 	struct iwl_notification_wait wait_d3_notif;
3032 	int ret;
3033 
3034 	iwl_init_notification_wait(&mvm->notif_wait, &wait_d3_notif,
3035 				   d3_resume_notif, ARRAY_SIZE(d3_resume_notif),
3036 				   iwl_mvm_wait_d3_notif, d3_data);
3037 
3038 	ret = iwl_mvm_resume_firmware(mvm, d3_data->test);
3039 	if (ret) {
3040 		iwl_remove_notification(&mvm->notif_wait, &wait_d3_notif);
3041 		return ret;
3042 	}
3043 
3044 	return iwl_wait_notification(&mvm->notif_wait, &wait_d3_notif,
3045 				     IWL_MVM_D3_NOTIF_TIMEOUT);
3046 }
3047 
3048 static inline bool iwl_mvm_d3_resume_notif_based(struct iwl_mvm *mvm)
3049 {
3050 	return iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
3051 				       WOWLAN_INFO_NOTIFICATION, 0) &&
3052 		iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
3053 					WOWLAN_WAKE_PKT_NOTIFICATION, 0) &&
3054 		iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
3055 					D3_END_NOTIFICATION, 0);
3056 }
3057 
3058 static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test)
3059 {
3060 	struct ieee80211_vif *vif = NULL;
3061 	int ret = 1;
3062 	struct iwl_mvm_nd_results results = {};
3063 	struct iwl_d3_data d3_data = {
3064 		.test = test,
3065 		.notif_expected =
3066 			IWL_D3_NOTIF_WOWLAN_INFO |
3067 			IWL_D3_NOTIF_D3_END_NOTIF,
3068 		.nd_results_valid = false,
3069 		.nd_results = &results,
3070 	};
3071 	bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
3072 					 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
3073 	bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa,
3074 				      IWL_UCODE_TLV_CAPA_D0I3_END_FIRST);
3075 	bool resume_notif_based = iwl_mvm_d3_resume_notif_based(mvm);
3076 	bool keep = false;
3077 
3078 	mutex_lock(&mvm->mutex);
3079 
3080 	mvm->last_reset_or_resume_time_jiffies = jiffies;
3081 
3082 	/* get the BSS vif pointer again */
3083 	vif = iwl_mvm_get_bss_vif(mvm);
3084 	if (IS_ERR_OR_NULL(vif))
3085 		goto err;
3086 
3087 	iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
3088 
3089 	if (iwl_mvm_check_rt_status(mvm, vif)) {
3090 		set_bit(STATUS_FW_ERROR, &mvm->trans->status);
3091 		iwl_mvm_dump_nic_error_log(mvm);
3092 		iwl_dbg_tlv_time_point(&mvm->fwrt,
3093 				       IWL_FW_INI_TIME_POINT_FW_ASSERT, NULL);
3094 		iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert,
3095 					false, 0);
3096 		ret = 1;
3097 		goto err;
3098 	}
3099 
3100 	if (resume_notif_based) {
3101 		d3_data.status = kzalloc(sizeof(*d3_data.status), GFP_KERNEL);
3102 		if (!d3_data.status) {
3103 			IWL_ERR(mvm, "Failed to allocate wowlan status\n");
3104 			ret = -ENOMEM;
3105 			goto err;
3106 		}
3107 
3108 		ret = iwl_mvm_d3_notif_wait(mvm, &d3_data);
3109 		if (ret)
3110 			goto err;
3111 	} else {
3112 		ret = iwl_mvm_resume_firmware(mvm, test);
3113 		if (ret < 0)
3114 			goto err;
3115 	}
3116 
3117 	/* after the successful handshake, we're out of D3 */
3118 	mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
3119 
3120 	/* when reset is required we can't send these following commands */
3121 	if (d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)
3122 		goto query_wakeup_reasons;
3123 
3124 	/*
3125 	 * Query the current location and source from the D3 firmware so we
3126 	 * can play it back when we re-intiailize the D0 firmware
3127 	 */
3128 	iwl_mvm_update_changed_regdom(mvm);
3129 
3130 	/* Re-configure PPAG settings */
3131 	iwl_mvm_ppag_send_cmd(mvm);
3132 
3133 	if (!unified_image)
3134 		/*  Re-configure default SAR profile */
3135 		iwl_mvm_sar_select_profile(mvm, 1, 1);
3136 
3137 	if (mvm->net_detect && unified_image) {
3138 		/* If this is a non-unified image, we restart the FW,
3139 		 * so no need to stop the netdetect scan.  If that
3140 		 * fails, continue and try to get the wake-up reasons,
3141 		 * but trigger a HW restart by keeping a failure code
3142 		 * in ret.
3143 		 */
3144 		ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT,
3145 					false);
3146 	}
3147 
3148 query_wakeup_reasons:
3149 	keep = iwl_mvm_choose_query_wakeup_reasons(mvm, vif, &d3_data);
3150 	/* has unlocked the mutex, so skip that */
3151 	goto out;
3152 
3153 err:
3154 	mutex_unlock(&mvm->mutex);
3155 out:
3156 	if (d3_data.status)
3157 		kfree(d3_data.status->wake_packet);
3158 	kfree(d3_data.status);
3159 	iwl_mvm_free_nd(mvm);
3160 
3161 	if (!d3_data.test && !mvm->net_detect)
3162 		ieee80211_iterate_active_interfaces_mtx(mvm->hw,
3163 							IEEE80211_IFACE_ITER_NORMAL,
3164 							iwl_mvm_d3_disconnect_iter,
3165 							keep ? vif : NULL);
3166 
3167 	clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
3168 
3169 	/* no need to reset the device in unified images, if successful */
3170 	if (unified_image && !ret) {
3171 		/* nothing else to do if we already sent D0I3_END_CMD */
3172 		if (d0i3_first)
3173 			return 0;
3174 
3175 		if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
3176 					     D3_END_NOTIFICATION, 0)) {
3177 			ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL);
3178 			if (!ret)
3179 				return 0;
3180 		} else if (!(d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)) {
3181 			return 0;
3182 		}
3183 	}
3184 
3185 	/*
3186 	 * Reconfigure the device in one of the following cases:
3187 	 * 1. We are not using a unified image
3188 	 * 2. We are using a unified image but had an error while exiting D3
3189 	 */
3190 	set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
3191 
3192 	/* regardless of what happened, we're now out of D3 */
3193 	mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
3194 
3195 	return 1;
3196 }
3197 
3198 int iwl_mvm_resume(struct ieee80211_hw *hw)
3199 {
3200 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3201 	int ret;
3202 
3203 	ret = __iwl_mvm_resume(mvm, false);
3204 
3205 	iwl_mvm_resume_tcm(mvm);
3206 
3207 	iwl_fw_runtime_resume(&mvm->fwrt);
3208 
3209 	return ret;
3210 }
3211 
3212 void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled)
3213 {
3214 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3215 
3216 	device_set_wakeup_enable(mvm->trans->dev, enabled);
3217 }
3218 
3219 #ifdef CONFIG_IWLWIFI_DEBUGFS
3220 static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file)
3221 {
3222 	struct iwl_mvm *mvm = inode->i_private;
3223 	int err;
3224 
3225 	if (mvm->d3_test_active)
3226 		return -EBUSY;
3227 
3228 	file->private_data = inode->i_private;
3229 
3230 	iwl_mvm_pause_tcm(mvm, true);
3231 
3232 	iwl_fw_runtime_suspend(&mvm->fwrt);
3233 
3234 	/* start pseudo D3 */
3235 	rtnl_lock();
3236 	wiphy_lock(mvm->hw->wiphy);
3237 	err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true);
3238 	wiphy_unlock(mvm->hw->wiphy);
3239 	rtnl_unlock();
3240 	if (err > 0)
3241 		err = -EINVAL;
3242 	if (err)
3243 		return err;
3244 
3245 	mvm->d3_test_active = true;
3246 	mvm->keep_vif = NULL;
3247 	return 0;
3248 }
3249 
3250 static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf,
3251 				    size_t count, loff_t *ppos)
3252 {
3253 	struct iwl_mvm *mvm = file->private_data;
3254 	u32 pme_asserted;
3255 
3256 	while (true) {
3257 		/* read pme_ptr if available */
3258 		if (mvm->d3_test_pme_ptr) {
3259 			pme_asserted = iwl_trans_read_mem32(mvm->trans,
3260 						mvm->d3_test_pme_ptr);
3261 			if (pme_asserted)
3262 				break;
3263 		}
3264 
3265 		if (msleep_interruptible(100))
3266 			break;
3267 	}
3268 
3269 	return 0;
3270 }
3271 
3272 static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac,
3273 					      struct ieee80211_vif *vif)
3274 {
3275 	/* skip the one we keep connection on */
3276 	if (_data == vif)
3277 		return;
3278 
3279 	if (vif->type == NL80211_IFTYPE_STATION)
3280 		ieee80211_connection_loss(vif);
3281 }
3282 
3283 static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file)
3284 {
3285 	struct iwl_mvm *mvm = inode->i_private;
3286 	bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
3287 					 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
3288 
3289 	mvm->d3_test_active = false;
3290 
3291 	iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
3292 
3293 	rtnl_lock();
3294 	wiphy_lock(mvm->hw->wiphy);
3295 	__iwl_mvm_resume(mvm, true);
3296 	wiphy_unlock(mvm->hw->wiphy);
3297 	rtnl_unlock();
3298 
3299 	iwl_mvm_resume_tcm(mvm);
3300 
3301 	iwl_fw_runtime_resume(&mvm->fwrt);
3302 
3303 	iwl_abort_notification_waits(&mvm->notif_wait);
3304 	if (!unified_image) {
3305 		int remaining_time = 10;
3306 
3307 		ieee80211_restart_hw(mvm->hw);
3308 
3309 		/* wait for restart and disconnect all interfaces */
3310 		while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
3311 		       remaining_time > 0) {
3312 			remaining_time--;
3313 			msleep(1000);
3314 		}
3315 
3316 		if (remaining_time == 0)
3317 			IWL_ERR(mvm, "Timed out waiting for HW restart!\n");
3318 	}
3319 
3320 	ieee80211_iterate_active_interfaces_atomic(
3321 		mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
3322 		iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif);
3323 
3324 	return 0;
3325 }
3326 
3327 const struct file_operations iwl_dbgfs_d3_test_ops = {
3328 	.llseek = no_llseek,
3329 	.open = iwl_mvm_d3_test_open,
3330 	.read = iwl_mvm_d3_test_read,
3331 	.release = iwl_mvm_d3_test_release,
3332 };
3333 #endif
3334