1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /*
3  * Copyright (C) 2012-2014, 2018-2022 Intel Corporation
4  * Copyright (C) 2013-2015 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 = kmalloc(sizeof(*data.rsc), GFP_KERNEL);
465 		if (!data.rsc)
466 			return -ENOMEM;
467 
468 		memset(data.rsc, 0xff, sizeof(*data.rsc));
469 
470 		for (i = 0; i < ARRAY_SIZE(data.rsc->mcast_key_id_map); i++)
471 			data.rsc->mcast_key_id_map[i] =
472 				IWL_MCAST_KEY_MAP_INVALID;
473 		data.rsc->sta_id = cpu_to_le32(mvmvif->ap_sta_id);
474 
475 		ieee80211_iter_keys(mvm->hw, vif,
476 				    iwl_mvm_wowlan_get_rsc_v5_data,
477 				    &data);
478 
479 		if (data.have_rsc)
480 			ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM,
481 						   CMD_ASYNC, sizeof(*data.rsc),
482 						   data.rsc);
483 		else
484 			ret = 0;
485 		kfree(data.rsc);
486 	} else if (ver == 4 || ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN) {
487 		struct wowlan_key_rsc_tsc_data data = {};
488 		int size;
489 
490 		data.rsc_tsc = kzalloc(sizeof(*data.rsc_tsc), GFP_KERNEL);
491 		if (!data.rsc_tsc)
492 			return -ENOMEM;
493 
494 		if (ver == 4) {
495 			size = sizeof(*data.rsc_tsc);
496 			data.rsc_tsc->sta_id = cpu_to_le32(mvmvif->ap_sta_id);
497 		} else {
498 			/* ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN */
499 			size = sizeof(data.rsc_tsc->params);
500 		}
501 
502 		ieee80211_iter_keys(mvm->hw, vif,
503 				    iwl_mvm_wowlan_get_rsc_tsc_data,
504 				    &data);
505 
506 		if (data.have_rsc_tsc)
507 			ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM,
508 						   CMD_ASYNC, size,
509 						   data.rsc_tsc);
510 		else
511 			ret = 0;
512 		kfree(data.rsc_tsc);
513 	} else {
514 		ret = 0;
515 		WARN_ON_ONCE(1);
516 	}
517 
518 	return ret;
519 }
520 
521 struct wowlan_key_tkip_data {
522 	struct iwl_wowlan_tkip_params_cmd tkip;
523 	bool have_tkip_keys;
524 };
525 
526 static void iwl_mvm_wowlan_get_tkip_data(struct ieee80211_hw *hw,
527 					 struct ieee80211_vif *vif,
528 					 struct ieee80211_sta *sta,
529 					 struct ieee80211_key_conf *key,
530 					 void *_data)
531 {
532 	struct wowlan_key_tkip_data *data = _data;
533 	struct iwl_p1k_cache *rx_p1ks;
534 	u8 *rx_mic_key;
535 	struct ieee80211_key_seq seq;
536 	u32 cur_rx_iv32 = 0;
537 	u16 p1k[IWL_P1K_SIZE];
538 	int i;
539 
540 	switch (key->cipher) {
541 	default:
542 		break;
543 	case WLAN_CIPHER_SUITE_TKIP:
544 		if (sta) {
545 			u64 pn64;
546 
547 			rx_p1ks = data->tkip.rx_uni;
548 
549 			pn64 = atomic64_read(&key->tx_pn);
550 
551 			ieee80211_get_tkip_p1k_iv(key, TKIP_PN_TO_IV32(pn64),
552 						  p1k);
553 			iwl_mvm_convert_p1k(p1k, data->tkip.tx.p1k);
554 
555 			memcpy(data->tkip.mic_keys.tx,
556 			       &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
557 			       IWL_MIC_KEY_SIZE);
558 
559 			rx_mic_key = data->tkip.mic_keys.rx_unicast;
560 		} else {
561 			rx_p1ks = data->tkip.rx_multi;
562 			rx_mic_key = data->tkip.mic_keys.rx_mcast;
563 		}
564 
565 		for (i = 0; i < IWL_NUM_RSC; i++) {
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_BIP_GMAC_256:
603 	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
604 		data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_GCMP);
605 		return;
606 	case WLAN_CIPHER_SUITE_AES_CMAC:
607 		data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_CCM);
608 		return;
609 	case WLAN_CIPHER_SUITE_CCMP:
610 		if (!sta)
611 			data->kek_kck_cmd->gtk_cipher =
612 				cpu_to_le32(STA_KEY_FLG_CCM);
613 		break;
614 	case WLAN_CIPHER_SUITE_GCMP:
615 	case WLAN_CIPHER_SUITE_GCMP_256:
616 		if (!sta)
617 			data->kek_kck_cmd->gtk_cipher =
618 				cpu_to_le32(STA_KEY_FLG_GCMP);
619 		break;
620 	}
621 }
622 
623 static int iwl_mvm_send_patterns_v1(struct iwl_mvm *mvm,
624 				    struct cfg80211_wowlan *wowlan)
625 {
626 	struct iwl_wowlan_patterns_cmd_v1 *pattern_cmd;
627 	struct iwl_host_cmd cmd = {
628 		.id = WOWLAN_PATTERNS,
629 		.dataflags[0] = IWL_HCMD_DFL_NOCOPY,
630 	};
631 	int i, err;
632 
633 	if (!wowlan->n_patterns)
634 		return 0;
635 
636 	cmd.len[0] = struct_size(pattern_cmd, patterns, wowlan->n_patterns);
637 
638 	pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
639 	if (!pattern_cmd)
640 		return -ENOMEM;
641 
642 	pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
643 
644 	for (i = 0; i < wowlan->n_patterns; i++) {
645 		int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
646 
647 		memcpy(&pattern_cmd->patterns[i].mask,
648 		       wowlan->patterns[i].mask, mask_len);
649 		memcpy(&pattern_cmd->patterns[i].pattern,
650 		       wowlan->patterns[i].pattern,
651 		       wowlan->patterns[i].pattern_len);
652 		pattern_cmd->patterns[i].mask_size = mask_len;
653 		pattern_cmd->patterns[i].pattern_size =
654 			wowlan->patterns[i].pattern_len;
655 	}
656 
657 	cmd.data[0] = pattern_cmd;
658 	err = iwl_mvm_send_cmd(mvm, &cmd);
659 	kfree(pattern_cmd);
660 	return err;
661 }
662 
663 static int iwl_mvm_send_patterns(struct iwl_mvm *mvm,
664 				 struct ieee80211_vif *vif,
665 				 struct cfg80211_wowlan *wowlan)
666 {
667 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
668 	struct iwl_wowlan_patterns_cmd *pattern_cmd;
669 	struct iwl_host_cmd cmd = {
670 		.id = WOWLAN_PATTERNS,
671 		.dataflags[0] = IWL_HCMD_DFL_NOCOPY,
672 	};
673 	int i, err;
674 	int ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id,
675 					IWL_FW_CMD_VER_UNKNOWN);
676 
677 	if (!wowlan->n_patterns)
678 		return 0;
679 
680 	cmd.len[0] = sizeof(*pattern_cmd) +
681 		wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern_v2);
682 
683 	pattern_cmd = kzalloc(cmd.len[0], GFP_KERNEL);
684 	if (!pattern_cmd)
685 		return -ENOMEM;
686 
687 	pattern_cmd->n_patterns = wowlan->n_patterns;
688 	if (ver >= 3)
689 		pattern_cmd->sta_id = mvmvif->ap_sta_id;
690 
691 	for (i = 0; i < wowlan->n_patterns; i++) {
692 		int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
693 
694 		pattern_cmd->patterns[i].pattern_type =
695 			WOWLAN_PATTERN_TYPE_BITMASK;
696 
697 		memcpy(&pattern_cmd->patterns[i].u.bitmask.mask,
698 		       wowlan->patterns[i].mask, mask_len);
699 		memcpy(&pattern_cmd->patterns[i].u.bitmask.pattern,
700 		       wowlan->patterns[i].pattern,
701 		       wowlan->patterns[i].pattern_len);
702 		pattern_cmd->patterns[i].u.bitmask.mask_size = mask_len;
703 		pattern_cmd->patterns[i].u.bitmask.pattern_size =
704 			wowlan->patterns[i].pattern_len;
705 	}
706 
707 	cmd.data[0] = pattern_cmd;
708 	err = iwl_mvm_send_cmd(mvm, &cmd);
709 	kfree(pattern_cmd);
710 	return err;
711 }
712 
713 static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
714 				struct ieee80211_sta *ap_sta)
715 {
716 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
717 	struct ieee80211_chanctx_conf *ctx;
718 	u8 chains_static, chains_dynamic;
719 	struct cfg80211_chan_def chandef;
720 	int ret, i;
721 	struct iwl_binding_cmd_v1 binding_cmd = {};
722 	struct iwl_time_quota_cmd quota_cmd = {};
723 	struct iwl_time_quota_data *quota;
724 	u32 status;
725 
726 	if (WARN_ON_ONCE(iwl_mvm_is_cdb_supported(mvm)))
727 		return -EINVAL;
728 
729 	/* add back the PHY */
730 	if (WARN_ON(!mvmvif->phy_ctxt))
731 		return -EINVAL;
732 
733 	rcu_read_lock();
734 	ctx = rcu_dereference(vif->chanctx_conf);
735 	if (WARN_ON(!ctx)) {
736 		rcu_read_unlock();
737 		return -EINVAL;
738 	}
739 	chandef = ctx->def;
740 	chains_static = ctx->rx_chains_static;
741 	chains_dynamic = ctx->rx_chains_dynamic;
742 	rcu_read_unlock();
743 
744 	ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt, &chandef,
745 				   chains_static, chains_dynamic);
746 	if (ret)
747 		return ret;
748 
749 	/* add back the MAC */
750 	mvmvif->uploaded = false;
751 
752 	if (WARN_ON(!vif->bss_conf.assoc))
753 		return -EINVAL;
754 
755 	ret = iwl_mvm_mac_ctxt_add(mvm, vif);
756 	if (ret)
757 		return ret;
758 
759 	/* add back binding - XXX refactor? */
760 	binding_cmd.id_and_color =
761 		cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
762 						mvmvif->phy_ctxt->color));
763 	binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD);
764 	binding_cmd.phy =
765 		cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
766 						mvmvif->phy_ctxt->color));
767 	binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
768 							      mvmvif->color));
769 	for (i = 1; i < MAX_MACS_IN_BINDING; i++)
770 		binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID);
771 
772 	status = 0;
773 	ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD,
774 					  IWL_BINDING_CMD_SIZE_V1, &binding_cmd,
775 					  &status);
776 	if (ret) {
777 		IWL_ERR(mvm, "Failed to add binding: %d\n", ret);
778 		return ret;
779 	}
780 
781 	if (status) {
782 		IWL_ERR(mvm, "Binding command failed: %u\n", status);
783 		return -EIO;
784 	}
785 
786 	ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false, 0);
787 	if (ret)
788 		return ret;
789 	rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], ap_sta);
790 
791 	ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
792 	if (ret)
793 		return ret;
794 
795 	/* and some quota */
796 	quota = iwl_mvm_quota_cmd_get_quota(mvm, &quota_cmd, 0);
797 	quota->id_and_color =
798 		cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
799 						mvmvif->phy_ctxt->color));
800 	quota->quota = cpu_to_le32(IWL_MVM_MAX_QUOTA);
801 	quota->max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA);
802 
803 	for (i = 1; i < MAX_BINDINGS; i++) {
804 		quota = iwl_mvm_quota_cmd_get_quota(mvm, &quota_cmd, i);
805 		quota->id_and_color = cpu_to_le32(FW_CTXT_INVALID);
806 	}
807 
808 	ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0,
809 				   iwl_mvm_quota_cmd_size(mvm), &quota_cmd);
810 	if (ret)
811 		IWL_ERR(mvm, "Failed to send quota: %d\n", ret);
812 
813 	if (iwl_mvm_is_lar_supported(mvm) && iwl_mvm_init_fw_regd(mvm))
814 		IWL_ERR(mvm, "Failed to initialize D3 LAR information\n");
815 
816 	return 0;
817 }
818 
819 static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm,
820 				       struct ieee80211_vif *vif)
821 {
822 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
823 	struct iwl_nonqos_seq_query_cmd query_cmd = {
824 		.get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET),
825 		.mac_id_n_color =
826 			cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
827 							mvmvif->color)),
828 	};
829 	struct iwl_host_cmd cmd = {
830 		.id = NON_QOS_TX_COUNTER_CMD,
831 		.flags = CMD_WANT_SKB,
832 	};
833 	int err;
834 	u32 size;
835 
836 	cmd.data[0] = &query_cmd;
837 	cmd.len[0] = sizeof(query_cmd);
838 
839 	err = iwl_mvm_send_cmd(mvm, &cmd);
840 	if (err)
841 		return err;
842 
843 	size = iwl_rx_packet_payload_len(cmd.resp_pkt);
844 	if (size < sizeof(__le16)) {
845 		err = -EINVAL;
846 	} else {
847 		err = le16_to_cpup((__le16 *)cmd.resp_pkt->data);
848 		/* firmware returns next, not last-used seqno */
849 		err = (u16) (err - 0x10);
850 	}
851 
852 	iwl_free_resp(&cmd);
853 	return err;
854 }
855 
856 void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
857 {
858 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
859 	struct iwl_nonqos_seq_query_cmd query_cmd = {
860 		.get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET),
861 		.mac_id_n_color =
862 			cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
863 							mvmvif->color)),
864 		.value = cpu_to_le16(mvmvif->seqno),
865 	};
866 
867 	/* return if called during restart, not resume from D3 */
868 	if (!mvmvif->seqno_valid)
869 		return;
870 
871 	mvmvif->seqno_valid = false;
872 
873 	if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0,
874 				 sizeof(query_cmd), &query_cmd))
875 		IWL_ERR(mvm, "failed to set non-QoS seqno\n");
876 }
877 
878 static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm)
879 {
880 	iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
881 
882 	iwl_mvm_stop_device(mvm);
883 	/*
884 	 * Set the HW restart bit -- this is mostly true as we're
885 	 * going to load new firmware and reprogram that, though
886 	 * the reprogramming is going to be manual to avoid adding
887 	 * all the MACs that aren't support.
888 	 * We don't have to clear up everything though because the
889 	 * reprogramming is manual. When we resume, we'll actually
890 	 * go through a proper restart sequence again to switch
891 	 * back to the runtime firmware image.
892 	 */
893 	set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
894 
895 	/* the fw is reset, so all the keys are cleared */
896 	memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
897 
898 	mvm->ptk_ivlen = 0;
899 	mvm->ptk_icvlen = 0;
900 	mvm->ptk_ivlen = 0;
901 	mvm->ptk_icvlen = 0;
902 
903 	return iwl_mvm_load_d3_fw(mvm);
904 }
905 
906 static int
907 iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm,
908 			  struct cfg80211_wowlan *wowlan,
909 			  struct iwl_wowlan_config_cmd *wowlan_config_cmd,
910 			  struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
911 			  struct ieee80211_sta *ap_sta)
912 {
913 	struct iwl_mvm_sta *mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
914 
915 	/* TODO: wowlan_config_cmd->wowlan_ba_teardown_tids */
916 
917 	wowlan_config_cmd->is_11n_connection =
918 					ap_sta->deflink.ht_cap.ht_supported;
919 	wowlan_config_cmd->flags = ENABLE_L3_FILTERING |
920 		ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING;
921 
922 	if (iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_CONFIGURATION, 0) < 6) {
923 		/* Query the last used seqno and set it */
924 		int ret = iwl_mvm_get_last_nonqos_seq(mvm, vif);
925 
926 		if (ret < 0)
927 			return ret;
928 
929 		wowlan_config_cmd->non_qos_seq = cpu_to_le16(ret);
930 	}
931 
932 	iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, wowlan_config_cmd);
933 
934 	if (wowlan->disconnect)
935 		wowlan_config_cmd->wakeup_filter |=
936 			cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
937 				    IWL_WOWLAN_WAKEUP_LINK_CHANGE);
938 	if (wowlan->magic_pkt)
939 		wowlan_config_cmd->wakeup_filter |=
940 			cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET);
941 	if (wowlan->gtk_rekey_failure)
942 		wowlan_config_cmd->wakeup_filter |=
943 			cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
944 	if (wowlan->eap_identity_req)
945 		wowlan_config_cmd->wakeup_filter |=
946 			cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ);
947 	if (wowlan->four_way_handshake)
948 		wowlan_config_cmd->wakeup_filter |=
949 			cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
950 	if (wowlan->n_patterns)
951 		wowlan_config_cmd->wakeup_filter |=
952 			cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH);
953 
954 	if (wowlan->rfkill_release)
955 		wowlan_config_cmd->wakeup_filter |=
956 			cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
957 
958 	if (wowlan->tcp) {
959 		/*
960 		 * Set the "link change" (really "link lost") flag as well
961 		 * since that implies losing the TCP connection.
962 		 */
963 		wowlan_config_cmd->wakeup_filter |=
964 			cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS |
965 				    IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE |
966 				    IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET |
967 				    IWL_WOWLAN_WAKEUP_LINK_CHANGE);
968 	}
969 
970 	if (wowlan->any) {
971 		wowlan_config_cmd->wakeup_filter |=
972 			cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
973 				    IWL_WOWLAN_WAKEUP_LINK_CHANGE |
974 				    IWL_WOWLAN_WAKEUP_RX_FRAME |
975 				    IWL_WOWLAN_WAKEUP_BCN_FILTERING);
976 	}
977 
978 	return 0;
979 }
980 
981 static int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm,
982 					    struct ieee80211_vif *vif)
983 {
984 	bool unified = fw_has_capa(&mvm->fw->ucode_capa,
985 				   IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
986 	struct wowlan_key_reprogram_data key_data = {};
987 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
988 	int ret;
989 	u8 cmd_ver;
990 	size_t cmd_size;
991 
992 	if (!unified) {
993 		/*
994 		 * if we have to configure keys, call ieee80211_iter_keys(),
995 		 * as we need non-atomic context in order to take the
996 		 * required locks.
997 		 */
998 		/*
999 		 * Note that currently we don't use CMD_ASYNC in the iterator.
1000 		 * In case of key_data.configure_keys, all the configured
1001 		 * commands are SYNC, and iwl_mvm_wowlan_program_keys() will
1002 		 * take care of locking/unlocking mvm->mutex.
1003 		 */
1004 		ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_program_keys,
1005 				    &key_data);
1006 
1007 		if (key_data.error)
1008 			return -EIO;
1009 	}
1010 
1011 	ret = iwl_mvm_wowlan_config_rsc_tsc(mvm, vif);
1012 	if (ret)
1013 		return ret;
1014 
1015 	if (!fw_has_api(&mvm->fw->ucode_capa,
1016 			IWL_UCODE_TLV_API_TKIP_MIC_KEYS)) {
1017 		int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TKIP_PARAM,
1018 						IWL_FW_CMD_VER_UNKNOWN);
1019 		struct wowlan_key_tkip_data tkip_data = {};
1020 		int size;
1021 
1022 		if (ver == 2) {
1023 			size = sizeof(tkip_data.tkip);
1024 			tkip_data.tkip.sta_id =
1025 				cpu_to_le32(mvmvif->ap_sta_id);
1026 		} else if (ver == 1 || ver == IWL_FW_CMD_VER_UNKNOWN) {
1027 			size = sizeof(struct iwl_wowlan_tkip_params_cmd_ver_1);
1028 		} else {
1029 			WARN_ON_ONCE(1);
1030 			return -EINVAL;
1031 		}
1032 
1033 		ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_get_tkip_data,
1034 				    &tkip_data);
1035 
1036 		if (tkip_data.have_tkip_keys) {
1037 			/* send relevant data according to CMD version */
1038 			ret = iwl_mvm_send_cmd_pdu(mvm,
1039 						   WOWLAN_TKIP_PARAM,
1040 						   CMD_ASYNC, size,
1041 						   &tkip_data.tkip);
1042 			if (ret)
1043 				return ret;
1044 		}
1045 	}
1046 
1047 	/* configure rekey data only if offloaded rekey is supported (d3) */
1048 	if (mvmvif->rekey_data.valid) {
1049 		struct iwl_wowlan_kek_kck_material_cmd_v4 kek_kck_cmd = {};
1050 		struct iwl_wowlan_kek_kck_material_cmd_v4 *_kek_kck_cmd =
1051 			&kek_kck_cmd;
1052 		struct wowlan_key_gtk_type_iter gtk_type_data = {
1053 			.kek_kck_cmd = _kek_kck_cmd,
1054 		};
1055 
1056 		cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,
1057 						WOWLAN_KEK_KCK_MATERIAL,
1058 						IWL_FW_CMD_VER_UNKNOWN);
1059 		if (WARN_ON(cmd_ver != 2 && cmd_ver != 3 && cmd_ver != 4 &&
1060 			    cmd_ver != IWL_FW_CMD_VER_UNKNOWN))
1061 			return -EINVAL;
1062 
1063 		ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_gtk_type_iter,
1064 				    &gtk_type_data);
1065 
1066 		memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck,
1067 		       mvmvif->rekey_data.kck_len);
1068 		kek_kck_cmd.kck_len = cpu_to_le16(mvmvif->rekey_data.kck_len);
1069 		memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek,
1070 		       mvmvif->rekey_data.kek_len);
1071 		kek_kck_cmd.kek_len = cpu_to_le16(mvmvif->rekey_data.kek_len);
1072 		kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr;
1073 		kek_kck_cmd.akm = cpu_to_le32(mvmvif->rekey_data.akm);
1074 		kek_kck_cmd.sta_id = cpu_to_le32(mvmvif->ap_sta_id);
1075 
1076 		if (cmd_ver == 4) {
1077 			cmd_size = sizeof(struct iwl_wowlan_kek_kck_material_cmd_v4);
1078 		} else {
1079 			if (cmd_ver == 3)
1080 				cmd_size =
1081 					sizeof(struct iwl_wowlan_kek_kck_material_cmd_v3);
1082 			else
1083 				cmd_size =
1084 					sizeof(struct iwl_wowlan_kek_kck_material_cmd_v2);
1085 			/* skip the sta_id at the beginning */
1086 			_kek_kck_cmd = (void *)
1087 				((u8 *)_kek_kck_cmd + sizeof(kek_kck_cmd.sta_id));
1088 		}
1089 
1090 		IWL_DEBUG_WOWLAN(mvm, "setting akm %d\n",
1091 				 mvmvif->rekey_data.akm);
1092 
1093 		ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_KEK_KCK_MATERIAL,
1094 					   CMD_ASYNC, cmd_size, _kek_kck_cmd);
1095 		if (ret)
1096 			return ret;
1097 	}
1098 
1099 	return 0;
1100 }
1101 
1102 static int
1103 iwl_mvm_wowlan_config(struct iwl_mvm *mvm,
1104 		      struct cfg80211_wowlan *wowlan,
1105 		      struct iwl_wowlan_config_cmd *wowlan_config_cmd,
1106 		      struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
1107 		      struct ieee80211_sta *ap_sta)
1108 {
1109 	int ret;
1110 	bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1111 					 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1112 
1113 	mvm->offload_tid = wowlan_config_cmd->offloading_tid;
1114 
1115 	if (!unified_image) {
1116 		ret = iwl_mvm_switch_to_d3(mvm);
1117 		if (ret)
1118 			return ret;
1119 
1120 		ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta);
1121 		if (ret)
1122 			return ret;
1123 	}
1124 
1125 	/*
1126 	 * This needs to be unlocked due to lock ordering
1127 	 * constraints. Since we're in the suspend path
1128 	 * that isn't really a problem though.
1129 	 */
1130 	mutex_unlock(&mvm->mutex);
1131 	ret = iwl_mvm_wowlan_config_key_params(mvm, vif);
1132 	mutex_lock(&mvm->mutex);
1133 	if (ret)
1134 		return ret;
1135 
1136 	ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0,
1137 				   sizeof(*wowlan_config_cmd),
1138 				   wowlan_config_cmd);
1139 	if (ret)
1140 		return ret;
1141 
1142 	if (fw_has_api(&mvm->fw->ucode_capa,
1143 		       IWL_UCODE_TLV_API_WOWLAN_TCP_SYN_WAKE))
1144 		ret = iwl_mvm_send_patterns(mvm, vif, wowlan);
1145 	else
1146 		ret = iwl_mvm_send_patterns_v1(mvm, wowlan);
1147 	if (ret)
1148 		return ret;
1149 
1150 	return iwl_mvm_send_proto_offload(mvm, vif, false, true, 0);
1151 }
1152 
1153 static int
1154 iwl_mvm_netdetect_config(struct iwl_mvm *mvm,
1155 			 struct cfg80211_wowlan *wowlan,
1156 			 struct cfg80211_sched_scan_request *nd_config,
1157 			 struct ieee80211_vif *vif)
1158 {
1159 	int ret;
1160 	bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1161 					 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1162 
1163 	if (!unified_image) {
1164 		ret = iwl_mvm_switch_to_d3(mvm);
1165 		if (ret)
1166 			return ret;
1167 	} else {
1168 		/* In theory, we wouldn't have to stop a running sched
1169 		 * scan in order to start another one (for
1170 		 * net-detect).  But in practice this doesn't seem to
1171 		 * work properly, so stop any running sched_scan now.
1172 		 */
1173 		ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
1174 		if (ret)
1175 			return ret;
1176 	}
1177 
1178 	ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies,
1179 				       IWL_MVM_SCAN_NETDETECT);
1180 	if (ret)
1181 		return ret;
1182 
1183 	if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels))
1184 		return -EBUSY;
1185 
1186 	/* save the sched scan matchsets... */
1187 	if (nd_config->n_match_sets) {
1188 		mvm->nd_match_sets = kmemdup(nd_config->match_sets,
1189 					     sizeof(*nd_config->match_sets) *
1190 					     nd_config->n_match_sets,
1191 					     GFP_KERNEL);
1192 		if (mvm->nd_match_sets)
1193 			mvm->n_nd_match_sets = nd_config->n_match_sets;
1194 	}
1195 
1196 	/* ...and the sched scan channels for later reporting */
1197 	mvm->nd_channels = kmemdup(nd_config->channels,
1198 				   sizeof(*nd_config->channels) *
1199 				   nd_config->n_channels,
1200 				   GFP_KERNEL);
1201 	if (mvm->nd_channels)
1202 		mvm->n_nd_channels = nd_config->n_channels;
1203 
1204 	return 0;
1205 }
1206 
1207 static void iwl_mvm_free_nd(struct iwl_mvm *mvm)
1208 {
1209 	kfree(mvm->nd_match_sets);
1210 	mvm->nd_match_sets = NULL;
1211 	mvm->n_nd_match_sets = 0;
1212 	kfree(mvm->nd_channels);
1213 	mvm->nd_channels = NULL;
1214 	mvm->n_nd_channels = 0;
1215 }
1216 
1217 static int __iwl_mvm_suspend(struct ieee80211_hw *hw,
1218 			     struct cfg80211_wowlan *wowlan,
1219 			     bool test)
1220 {
1221 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1222 	struct ieee80211_vif *vif = NULL;
1223 	struct iwl_mvm_vif *mvmvif = NULL;
1224 	struct ieee80211_sta *ap_sta = NULL;
1225 	struct iwl_d3_manager_config d3_cfg_cmd_data = {
1226 		/*
1227 		 * Program the minimum sleep time to 10 seconds, as many
1228 		 * platforms have issues processing a wakeup signal while
1229 		 * still being in the process of suspending.
1230 		 */
1231 		.min_sleep_time = cpu_to_le32(10 * 1000 * 1000),
1232 	};
1233 	struct iwl_host_cmd d3_cfg_cmd = {
1234 		.id = D3_CONFIG_CMD,
1235 		.flags = CMD_WANT_SKB | CMD_SEND_IN_D3,
1236 		.data[0] = &d3_cfg_cmd_data,
1237 		.len[0] = sizeof(d3_cfg_cmd_data),
1238 	};
1239 	int ret;
1240 	int len __maybe_unused;
1241 	bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1242 					 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1243 
1244 	if (!wowlan) {
1245 		/*
1246 		 * mac80211 shouldn't get here, but for D3 test
1247 		 * it doesn't warrant a warning
1248 		 */
1249 		WARN_ON(!test);
1250 		return -EINVAL;
1251 	}
1252 
1253 	mutex_lock(&mvm->mutex);
1254 
1255 	set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
1256 
1257 	synchronize_net();
1258 
1259 	vif = iwl_mvm_get_bss_vif(mvm);
1260 	if (IS_ERR_OR_NULL(vif)) {
1261 		ret = 1;
1262 		goto out_noreset;
1263 	}
1264 
1265 	mvmvif = iwl_mvm_vif_from_mac80211(vif);
1266 
1267 	if (mvmvif->ap_sta_id == IWL_MVM_INVALID_STA) {
1268 		/* if we're not associated, this must be netdetect */
1269 		if (!wowlan->nd_config) {
1270 			ret = 1;
1271 			goto out_noreset;
1272 		}
1273 
1274 		ret = iwl_mvm_netdetect_config(
1275 			mvm, wowlan, wowlan->nd_config, vif);
1276 		if (ret)
1277 			goto out;
1278 
1279 		mvm->net_detect = true;
1280 	} else {
1281 		struct iwl_wowlan_config_cmd wowlan_config_cmd = {};
1282 
1283 		wowlan_config_cmd.sta_id = mvmvif->ap_sta_id;
1284 
1285 		ap_sta = rcu_dereference_protected(
1286 			mvm->fw_id_to_mac_id[mvmvif->ap_sta_id],
1287 			lockdep_is_held(&mvm->mutex));
1288 		if (IS_ERR_OR_NULL(ap_sta)) {
1289 			ret = -EINVAL;
1290 			goto out_noreset;
1291 		}
1292 
1293 		ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1294 						vif, mvmvif, ap_sta);
1295 		if (ret)
1296 			goto out_noreset;
1297 		ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1298 					    vif, mvmvif, ap_sta);
1299 		if (ret)
1300 			goto out;
1301 
1302 		mvm->net_detect = false;
1303 	}
1304 
1305 	ret = iwl_mvm_power_update_device(mvm);
1306 	if (ret)
1307 		goto out;
1308 
1309 	ret = iwl_mvm_power_update_mac(mvm);
1310 	if (ret)
1311 		goto out;
1312 
1313 #ifdef CONFIG_IWLWIFI_DEBUGFS
1314 	if (mvm->d3_wake_sysassert)
1315 		d3_cfg_cmd_data.wakeup_flags |=
1316 			cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR);
1317 #endif
1318 
1319 	/*
1320 	 * Prior to 9000 device family the driver needs to stop the dbg
1321 	 * recording before entering D3. In later devices the FW stops the
1322 	 * recording automatically.
1323 	 */
1324 	if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_9000)
1325 		iwl_fw_dbg_stop_restart_recording(&mvm->fwrt, NULL, true);
1326 
1327 	mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_D3;
1328 
1329 	/* must be last -- this switches firmware state */
1330 	ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd);
1331 	if (ret)
1332 		goto out;
1333 #ifdef CONFIG_IWLWIFI_DEBUGFS
1334 	len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt);
1335 	if (len >= sizeof(u32)) {
1336 		mvm->d3_test_pme_ptr =
1337 			le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data);
1338 	}
1339 #endif
1340 	iwl_free_resp(&d3_cfg_cmd);
1341 
1342 	clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1343 
1344 	ret = iwl_trans_d3_suspend(mvm->trans, test, !unified_image);
1345  out:
1346 	if (ret < 0) {
1347 		iwl_mvm_free_nd(mvm);
1348 
1349 		if (!unified_image) {
1350 			if (mvm->fw_restart > 0) {
1351 				mvm->fw_restart--;
1352 				ieee80211_restart_hw(mvm->hw);
1353 			}
1354 		}
1355 
1356 		clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
1357 	}
1358  out_noreset:
1359 	mutex_unlock(&mvm->mutex);
1360 
1361 	return ret;
1362 }
1363 
1364 int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
1365 {
1366 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1367 
1368 	iwl_mvm_pause_tcm(mvm, true);
1369 
1370 	iwl_fw_runtime_suspend(&mvm->fwrt);
1371 
1372 	return __iwl_mvm_suspend(hw, wowlan, false);
1373 }
1374 
1375 /* converted data from the different status responses */
1376 struct iwl_wowlan_status_data {
1377 	u64 replay_ctr;
1378 	u32 num_of_gtk_rekeys;
1379 	u32 received_beacons;
1380 	u32 wakeup_reasons;
1381 	u32 wake_packet_length;
1382 	u32 wake_packet_bufsize;
1383 	u16 pattern_number;
1384 	u16 non_qos_seq_ctr;
1385 	u16 qos_seq_ctr[8];
1386 	u8 tid_tear_down;
1387 
1388 	struct {
1389 		/* including RX MIC key for TKIP */
1390 		u8 key[WOWLAN_KEY_MAX_SIZE];
1391 		u8 len;
1392 		u8 flags;
1393 	} gtk;
1394 
1395 	struct {
1396 		/*
1397 		 * We store both the TKIP and AES representations
1398 		 * coming from the firmware because we decode the
1399 		 * data from there before we iterate the keys and
1400 		 * know which one we need.
1401 		 */
1402 		struct {
1403 			struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT];
1404 		} tkip, aes;
1405 
1406 		/*
1407 		 * We use -1 for when we have valid data but don't know
1408 		 * the key ID from firmware, and thus it needs to be
1409 		 * installed with the last key (depending on rekeying).
1410 		 */
1411 		s8 key_id;
1412 		bool valid;
1413 	} gtk_seq[2];
1414 
1415 	struct {
1416 		/* Same as above */
1417 		struct {
1418 			struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT];
1419 			u64 tx_pn;
1420 		} tkip, aes;
1421 	} ptk;
1422 
1423 	struct {
1424 		u64 ipn;
1425 		u8 key[WOWLAN_KEY_MAX_SIZE];
1426 		u8 len;
1427 		u8 flags;
1428 	} igtk;
1429 
1430 	u8 wake_packet[];
1431 };
1432 
1433 static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm,
1434 					  struct ieee80211_vif *vif,
1435 					  struct iwl_wowlan_status_data *status)
1436 {
1437 	struct sk_buff *pkt = NULL;
1438 	struct cfg80211_wowlan_wakeup wakeup = {
1439 		.pattern_idx = -1,
1440 	};
1441 	struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
1442 	u32 reasons = status->wakeup_reasons;
1443 
1444 	if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
1445 		wakeup_report = NULL;
1446 		goto report;
1447 	}
1448 
1449 	pm_wakeup_event(mvm->dev, 0);
1450 
1451 	if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET)
1452 		wakeup.magic_pkt = true;
1453 
1454 	if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN)
1455 		wakeup.pattern_idx =
1456 			status->pattern_number;
1457 
1458 	if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1459 		       IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH))
1460 		wakeup.disconnect = true;
1461 
1462 	if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)
1463 		wakeup.gtk_rekey_failure = true;
1464 
1465 	if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
1466 		wakeup.rfkill_release = true;
1467 
1468 	if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST)
1469 		wakeup.eap_identity_req = true;
1470 
1471 	if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE)
1472 		wakeup.four_way_handshake = true;
1473 
1474 	if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS)
1475 		wakeup.tcp_connlost = true;
1476 
1477 	if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE)
1478 		wakeup.tcp_nomoretokens = true;
1479 
1480 	if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET)
1481 		wakeup.tcp_match = true;
1482 
1483 	if (status->wake_packet_bufsize) {
1484 		int pktsize = status->wake_packet_bufsize;
1485 		int pktlen = status->wake_packet_length;
1486 		const u8 *pktdata = status->wake_packet;
1487 		const struct ieee80211_hdr *hdr = (const void *)pktdata;
1488 		int truncated = pktlen - pktsize;
1489 
1490 		/* this would be a firmware bug */
1491 		if (WARN_ON_ONCE(truncated < 0))
1492 			truncated = 0;
1493 
1494 		if (ieee80211_is_data(hdr->frame_control)) {
1495 			int hdrlen = ieee80211_hdrlen(hdr->frame_control);
1496 			int ivlen = 0, icvlen = 4; /* also FCS */
1497 
1498 			pkt = alloc_skb(pktsize, GFP_KERNEL);
1499 			if (!pkt)
1500 				goto report;
1501 
1502 			skb_put_data(pkt, pktdata, hdrlen);
1503 			pktdata += hdrlen;
1504 			pktsize -= hdrlen;
1505 
1506 			if (ieee80211_has_protected(hdr->frame_control)) {
1507 				/*
1508 				 * This is unlocked and using gtk_i(c)vlen,
1509 				 * but since everything is under RTNL still
1510 				 * that's not really a problem - changing
1511 				 * it would be difficult.
1512 				 */
1513 				if (is_multicast_ether_addr(hdr->addr1)) {
1514 					ivlen = mvm->gtk_ivlen;
1515 					icvlen += mvm->gtk_icvlen;
1516 				} else {
1517 					ivlen = mvm->ptk_ivlen;
1518 					icvlen += mvm->ptk_icvlen;
1519 				}
1520 			}
1521 
1522 			/* if truncated, FCS/ICV is (partially) gone */
1523 			if (truncated >= icvlen) {
1524 				icvlen = 0;
1525 				truncated -= icvlen;
1526 			} else {
1527 				icvlen -= truncated;
1528 				truncated = 0;
1529 			}
1530 
1531 			pktsize -= ivlen + icvlen;
1532 			pktdata += ivlen;
1533 
1534 			skb_put_data(pkt, pktdata, pktsize);
1535 
1536 			if (ieee80211_data_to_8023(pkt, vif->addr, vif->type))
1537 				goto report;
1538 			wakeup.packet = pkt->data;
1539 			wakeup.packet_present_len = pkt->len;
1540 			wakeup.packet_len = pkt->len - truncated;
1541 			wakeup.packet_80211 = false;
1542 		} else {
1543 			int fcslen = 4;
1544 
1545 			if (truncated >= 4) {
1546 				truncated -= 4;
1547 				fcslen = 0;
1548 			} else {
1549 				fcslen -= truncated;
1550 				truncated = 0;
1551 			}
1552 			pktsize -= fcslen;
1553 			wakeup.packet = status->wake_packet;
1554 			wakeup.packet_present_len = pktsize;
1555 			wakeup.packet_len = pktlen - truncated;
1556 			wakeup.packet_80211 = true;
1557 		}
1558 	}
1559 
1560  report:
1561 	ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
1562 	kfree_skb(pkt);
1563 }
1564 
1565 static void iwl_mvm_le64_to_aes_seq(__le64 le_pn, struct ieee80211_key_seq *seq)
1566 {
1567 	u64 pn = le64_to_cpu(le_pn);
1568 
1569 	seq->ccmp.pn[0] = pn >> 40;
1570 	seq->ccmp.pn[1] = pn >> 32;
1571 	seq->ccmp.pn[2] = pn >> 24;
1572 	seq->ccmp.pn[3] = pn >> 16;
1573 	seq->ccmp.pn[4] = pn >> 8;
1574 	seq->ccmp.pn[5] = pn;
1575 }
1576 
1577 static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc,
1578 				  struct ieee80211_key_seq *seq)
1579 {
1580 	iwl_mvm_le64_to_aes_seq(sc->pn, seq);
1581 }
1582 
1583 static void iwl_mvm_le64_to_tkip_seq(__le64 le_pn, struct ieee80211_key_seq *seq)
1584 {
1585 	u64 pn = le64_to_cpu(le_pn);
1586 
1587 	seq->tkip.iv16 = (u16)pn;
1588 	seq->tkip.iv32 = (u32)(pn >> 16);
1589 }
1590 
1591 static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc,
1592 				   struct ieee80211_key_seq *seq)
1593 {
1594 	seq->tkip.iv32 = le32_to_cpu(sc->iv32);
1595 	seq->tkip.iv16 = le16_to_cpu(sc->iv16);
1596 }
1597 
1598 static void iwl_mvm_set_key_rx_seq_tids(struct ieee80211_key_conf *key,
1599 					struct ieee80211_key_seq *seq)
1600 {
1601 	int tid;
1602 
1603 	for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++)
1604 		ieee80211_set_key_rx_seq(key, tid, &seq[tid]);
1605 }
1606 
1607 static void iwl_mvm_set_aes_ptk_rx_seq(struct iwl_mvm *mvm,
1608 				       struct iwl_wowlan_status_data *status,
1609 				       struct ieee80211_sta *sta,
1610 				       struct ieee80211_key_conf *key)
1611 {
1612 	struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1613 	struct iwl_mvm_key_pn *ptk_pn;
1614 	int tid;
1615 
1616 	iwl_mvm_set_key_rx_seq_tids(key, status->ptk.aes.seq);
1617 
1618 	if (!iwl_mvm_has_new_rx_api(mvm))
1619 		return;
1620 
1621 
1622 	rcu_read_lock();
1623 	ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]);
1624 	if (WARN_ON(!ptk_pn)) {
1625 		rcu_read_unlock();
1626 		return;
1627 	}
1628 
1629 	for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1630 		int i;
1631 
1632 		for (i = 1; i < mvm->trans->num_rx_queues; i++)
1633 			memcpy(ptk_pn->q[i].pn[tid],
1634 			       status->ptk.aes.seq[tid].ccmp.pn,
1635 			       IEEE80211_CCMP_PN_LEN);
1636 	}
1637 	rcu_read_unlock();
1638 }
1639 
1640 static void iwl_mvm_convert_key_counters(struct iwl_wowlan_status_data *status,
1641 					 union iwl_all_tsc_rsc *sc)
1642 {
1643 	int i;
1644 
1645 	BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT);
1646 	BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC);
1647 
1648 	/* GTK RX counters */
1649 	for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1650 		iwl_mvm_tkip_sc_to_seq(&sc->tkip.multicast_rsc[i],
1651 				       &status->gtk_seq[0].tkip.seq[i]);
1652 		iwl_mvm_aes_sc_to_seq(&sc->aes.multicast_rsc[i],
1653 				      &status->gtk_seq[0].aes.seq[i]);
1654 	}
1655 	status->gtk_seq[0].valid = true;
1656 	status->gtk_seq[0].key_id = -1;
1657 
1658 	/* PTK TX counter */
1659 	status->ptk.tkip.tx_pn = (u64)le16_to_cpu(sc->tkip.tsc.iv16) |
1660 				 ((u64)le32_to_cpu(sc->tkip.tsc.iv32) << 16);
1661 	status->ptk.aes.tx_pn = le64_to_cpu(sc->aes.tsc.pn);
1662 
1663 	/* PTK RX counters */
1664 	for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1665 		iwl_mvm_tkip_sc_to_seq(&sc->tkip.unicast_rsc[i],
1666 				       &status->ptk.tkip.seq[i]);
1667 		iwl_mvm_aes_sc_to_seq(&sc->aes.unicast_rsc[i],
1668 				      &status->ptk.aes.seq[i]);
1669 	}
1670 }
1671 
1672 static void
1673 iwl_mvm_convert_key_counters_v5_gtk_seq(struct iwl_wowlan_status_data *status,
1674 					struct iwl_wowlan_all_rsc_tsc_v5 *sc,
1675 					unsigned int idx, unsigned int key_id)
1676 {
1677 	int tid;
1678 
1679 	for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1680 		iwl_mvm_le64_to_tkip_seq(sc->mcast_rsc[idx][tid],
1681 					 &status->gtk_seq[idx].tkip.seq[tid]);
1682 		iwl_mvm_le64_to_aes_seq(sc->mcast_rsc[idx][tid],
1683 					&status->gtk_seq[idx].aes.seq[tid]);
1684 	}
1685 
1686 	status->gtk_seq[idx].valid = true;
1687 	status->gtk_seq[idx].key_id = key_id;
1688 }
1689 
1690 static void
1691 iwl_mvm_convert_key_counters_v5(struct iwl_wowlan_status_data *status,
1692 				struct iwl_wowlan_all_rsc_tsc_v5 *sc)
1693 {
1694 	int i, tid;
1695 
1696 	BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT);
1697 	BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC);
1698 	BUILD_BUG_ON(ARRAY_SIZE(sc->mcast_rsc) != ARRAY_SIZE(status->gtk_seq));
1699 
1700 	/* GTK RX counters */
1701 	for (i = 0; i < ARRAY_SIZE(sc->mcast_key_id_map); i++) {
1702 		u8 entry = sc->mcast_key_id_map[i];
1703 
1704 		if (entry < ARRAY_SIZE(sc->mcast_rsc))
1705 			iwl_mvm_convert_key_counters_v5_gtk_seq(status, sc,
1706 								entry, i);
1707 	}
1708 
1709 	/* PTK TX counters not needed, assigned in device */
1710 
1711 	/* PTK RX counters */
1712 	for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1713 		iwl_mvm_le64_to_tkip_seq(sc->ucast_rsc[tid],
1714 					 &status->ptk.tkip.seq[tid]);
1715 		iwl_mvm_le64_to_aes_seq(sc->ucast_rsc[tid],
1716 					&status->ptk.aes.seq[tid]);
1717 	}
1718 }
1719 
1720 static void iwl_mvm_set_key_rx_seq_idx(struct ieee80211_key_conf *key,
1721 				       struct iwl_wowlan_status_data *status,
1722 				       int idx)
1723 {
1724 	switch (key->cipher) {
1725 	case WLAN_CIPHER_SUITE_CCMP:
1726 	case WLAN_CIPHER_SUITE_GCMP:
1727 	case WLAN_CIPHER_SUITE_GCMP_256:
1728 		iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].aes.seq);
1729 		break;
1730 	case WLAN_CIPHER_SUITE_TKIP:
1731 		iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].tkip.seq);
1732 		break;
1733 	default:
1734 		WARN_ON(1);
1735 	}
1736 }
1737 
1738 static void iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf *key,
1739 				   struct iwl_wowlan_status_data *status,
1740 				   bool installed)
1741 {
1742 	int i;
1743 
1744 	for (i = 0; i < ARRAY_SIZE(status->gtk_seq); i++) {
1745 		if (!status->gtk_seq[i].valid)
1746 			continue;
1747 
1748 		/* Handle the case where we know the key ID */
1749 		if (status->gtk_seq[i].key_id == key->keyidx) {
1750 			s8 new_key_id = -1;
1751 
1752 			if (status->num_of_gtk_rekeys)
1753 				new_key_id = status->gtk.flags &
1754 						IWL_WOWLAN_GTK_IDX_MASK;
1755 
1756 			/* Don't install a new key's value to an old key */
1757 			if (new_key_id != key->keyidx)
1758 				iwl_mvm_set_key_rx_seq_idx(key, status, i);
1759 			continue;
1760 		}
1761 
1762 		/* handle the case where we didn't, last key only */
1763 		if (status->gtk_seq[i].key_id == -1 &&
1764 		    (!status->num_of_gtk_rekeys || installed))
1765 			iwl_mvm_set_key_rx_seq_idx(key, status, i);
1766 	}
1767 }
1768 
1769 struct iwl_mvm_d3_gtk_iter_data {
1770 	struct iwl_mvm *mvm;
1771 	struct iwl_wowlan_status_data *status;
1772 	void *last_gtk;
1773 	u32 cipher;
1774 	bool find_phase, unhandled_cipher;
1775 	int num_keys;
1776 };
1777 
1778 static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw,
1779 				   struct ieee80211_vif *vif,
1780 				   struct ieee80211_sta *sta,
1781 				   struct ieee80211_key_conf *key,
1782 				   void *_data)
1783 {
1784 	struct iwl_mvm_d3_gtk_iter_data *data = _data;
1785 	struct iwl_wowlan_status_data *status = data->status;
1786 
1787 	if (data->unhandled_cipher)
1788 		return;
1789 
1790 	switch (key->cipher) {
1791 	case WLAN_CIPHER_SUITE_WEP40:
1792 	case WLAN_CIPHER_SUITE_WEP104:
1793 		/* ignore WEP completely, nothing to do */
1794 		return;
1795 	case WLAN_CIPHER_SUITE_CCMP:
1796 	case WLAN_CIPHER_SUITE_GCMP:
1797 	case WLAN_CIPHER_SUITE_GCMP_256:
1798 	case WLAN_CIPHER_SUITE_TKIP:
1799 		/* we support these */
1800 		break;
1801 	default:
1802 		/* everything else (even CMAC for MFP) - disconnect from AP */
1803 		data->unhandled_cipher = true;
1804 		return;
1805 	}
1806 
1807 	data->num_keys++;
1808 
1809 	/*
1810 	 * pairwise key - update sequence counters only;
1811 	 * note that this assumes no TDLS sessions are active
1812 	 */
1813 	if (sta) {
1814 		if (data->find_phase)
1815 			return;
1816 
1817 		switch (key->cipher) {
1818 		case WLAN_CIPHER_SUITE_CCMP:
1819 		case WLAN_CIPHER_SUITE_GCMP:
1820 		case WLAN_CIPHER_SUITE_GCMP_256:
1821 			atomic64_set(&key->tx_pn, status->ptk.aes.tx_pn);
1822 			iwl_mvm_set_aes_ptk_rx_seq(data->mvm, status, sta, key);
1823 			break;
1824 		case WLAN_CIPHER_SUITE_TKIP:
1825 			atomic64_set(&key->tx_pn, status->ptk.tkip.tx_pn);
1826 			iwl_mvm_set_key_rx_seq_tids(key, status->ptk.tkip.seq);
1827 			break;
1828 		}
1829 
1830 		/* that's it for this key */
1831 		return;
1832 	}
1833 
1834 	if (data->find_phase) {
1835 		data->last_gtk = key;
1836 		data->cipher = key->cipher;
1837 		return;
1838 	}
1839 
1840 	if (data->status->num_of_gtk_rekeys)
1841 		ieee80211_remove_key(key);
1842 
1843 	if (data->last_gtk == key)
1844 		iwl_mvm_set_key_rx_seq(key, data->status, false);
1845 }
1846 
1847 static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm,
1848 					  struct ieee80211_vif *vif,
1849 					  struct iwl_wowlan_status_data *status)
1850 {
1851 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1852 	struct iwl_mvm_d3_gtk_iter_data gtkdata = {
1853 		.mvm = mvm,
1854 		.status = status,
1855 	};
1856 	u32 disconnection_reasons =
1857 		IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1858 		IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH;
1859 
1860 	if (!status || !vif->bss_conf.bssid)
1861 		return false;
1862 
1863 	if (status->wakeup_reasons & disconnection_reasons)
1864 		return false;
1865 
1866 	/* find last GTK that we used initially, if any */
1867 	gtkdata.find_phase = true;
1868 	ieee80211_iter_keys(mvm->hw, vif,
1869 			    iwl_mvm_d3_update_keys, &gtkdata);
1870 	/* not trying to keep connections with MFP/unhandled ciphers */
1871 	if (gtkdata.unhandled_cipher)
1872 		return false;
1873 	if (!gtkdata.num_keys)
1874 		goto out;
1875 	if (!gtkdata.last_gtk)
1876 		return false;
1877 
1878 	/*
1879 	 * invalidate all other GTKs that might still exist and update
1880 	 * the one that we used
1881 	 */
1882 	gtkdata.find_phase = false;
1883 	ieee80211_iter_keys(mvm->hw, vif,
1884 			    iwl_mvm_d3_update_keys, &gtkdata);
1885 
1886 	IWL_DEBUG_WOWLAN(mvm, "num of GTK rekeying %d\n",
1887 			 status->num_of_gtk_rekeys);
1888 	if (status->num_of_gtk_rekeys) {
1889 		struct ieee80211_key_conf *key;
1890 		struct {
1891 			struct ieee80211_key_conf conf;
1892 			u8 key[32];
1893 		} conf = {
1894 			.conf.cipher = gtkdata.cipher,
1895 			.conf.keyidx =
1896 				status->gtk.flags & IWL_WOWLAN_GTK_IDX_MASK,
1897 		};
1898 		__be64 replay_ctr;
1899 
1900 		IWL_DEBUG_WOWLAN(mvm,
1901 				 "Received from FW GTK cipher %d, key index %d\n",
1902 				 conf.conf.cipher, conf.conf.keyidx);
1903 
1904 		BUILD_BUG_ON(WLAN_KEY_LEN_CCMP != WLAN_KEY_LEN_GCMP);
1905 		BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_CCMP);
1906 		BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_GCMP_256);
1907 		BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_TKIP);
1908 		BUILD_BUG_ON(sizeof(conf.key) < sizeof(status->gtk.key));
1909 
1910 		memcpy(conf.conf.key, status->gtk.key, sizeof(status->gtk.key));
1911 
1912 		switch (gtkdata.cipher) {
1913 		case WLAN_CIPHER_SUITE_CCMP:
1914 		case WLAN_CIPHER_SUITE_GCMP:
1915 			conf.conf.keylen = WLAN_KEY_LEN_CCMP;
1916 			break;
1917 		case WLAN_CIPHER_SUITE_GCMP_256:
1918 			conf.conf.keylen = WLAN_KEY_LEN_GCMP_256;
1919 			break;
1920 		case WLAN_CIPHER_SUITE_TKIP:
1921 			conf.conf.keylen = WLAN_KEY_LEN_TKIP;
1922 			break;
1923 		}
1924 
1925 		key = ieee80211_gtk_rekey_add(vif, &conf.conf);
1926 		if (IS_ERR(key))
1927 			return false;
1928 		iwl_mvm_set_key_rx_seq(key, status, true);
1929 
1930 		replay_ctr = cpu_to_be64(status->replay_ctr);
1931 
1932 		ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid,
1933 					   (void *)&replay_ctr, GFP_KERNEL);
1934 	}
1935 
1936 out:
1937 	if (iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP,
1938 				    WOWLAN_GET_STATUSES, 0) < 10) {
1939 		mvmvif->seqno_valid = true;
1940 		/* +0x10 because the set API expects next-to-use, not last-used */
1941 		mvmvif->seqno = status->non_qos_seq_ctr + 0x10;
1942 	}
1943 
1944 	return true;
1945 }
1946 
1947 /* Occasionally, templates would be nice. This is one of those times ... */
1948 #define iwl_mvm_parse_wowlan_status_common(_ver)			\
1949 static struct iwl_wowlan_status_data *					\
1950 iwl_mvm_parse_wowlan_status_common_ ## _ver(struct iwl_mvm *mvm,	\
1951 					    struct iwl_wowlan_status_ ##_ver *data,\
1952 					    int len)			\
1953 {									\
1954 	struct iwl_wowlan_status_data *status;				\
1955 	int data_size, i;						\
1956 									\
1957 	if (len < sizeof(*data)) {					\
1958 		IWL_ERR(mvm, "Invalid WoWLAN status response!\n");	\
1959 		return NULL;						\
1960 	}								\
1961 									\
1962 	data_size = ALIGN(le32_to_cpu(data->wake_packet_bufsize), 4);	\
1963 	if (len != sizeof(*data) + data_size) {				\
1964 		IWL_ERR(mvm, "Invalid WoWLAN status response!\n");	\
1965 		return NULL;						\
1966 	}								\
1967 									\
1968 	status = kzalloc(sizeof(*status) + data_size, GFP_KERNEL);	\
1969 	if (!status)							\
1970 		return NULL;						\
1971 									\
1972 	/* copy all the common fields */				\
1973 	status->replay_ctr = le64_to_cpu(data->replay_ctr);		\
1974 	status->pattern_number = le16_to_cpu(data->pattern_number);	\
1975 	status->non_qos_seq_ctr = le16_to_cpu(data->non_qos_seq_ctr);	\
1976 	for (i = 0; i < 8; i++)						\
1977 		status->qos_seq_ctr[i] =				\
1978 			le16_to_cpu(data->qos_seq_ctr[i]);		\
1979 	status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons);	\
1980 	status->num_of_gtk_rekeys =					\
1981 		le32_to_cpu(data->num_of_gtk_rekeys);			\
1982 	status->received_beacons = le32_to_cpu(data->received_beacons);	\
1983 	status->wake_packet_length =					\
1984 		le32_to_cpu(data->wake_packet_length);			\
1985 	status->wake_packet_bufsize =					\
1986 		le32_to_cpu(data->wake_packet_bufsize);			\
1987 	memcpy(status->wake_packet, data->wake_packet,			\
1988 	       status->wake_packet_bufsize);				\
1989 									\
1990 	return status;							\
1991 }
1992 
1993 iwl_mvm_parse_wowlan_status_common(v6)
1994 iwl_mvm_parse_wowlan_status_common(v7)
1995 iwl_mvm_parse_wowlan_status_common(v9)
1996 iwl_mvm_parse_wowlan_status_common(v12)
1997 
1998 static void iwl_mvm_convert_gtk_v2(struct iwl_wowlan_status_data *status,
1999 				   struct iwl_wowlan_gtk_status_v2 *data)
2000 {
2001 	BUILD_BUG_ON(sizeof(status->gtk.key) < sizeof(data->key));
2002 	BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY +
2003 		     sizeof(data->tkip_mic_key) >
2004 		     sizeof(status->gtk.key));
2005 
2006 	status->gtk.len = data->key_len;
2007 	status->gtk.flags = data->key_flags;
2008 
2009 	memcpy(status->gtk.key, data->key, sizeof(data->key));
2010 
2011 	/* if it's as long as the TKIP encryption key, copy MIC key */
2012 	if (status->gtk.len == NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY)
2013 		memcpy(status->gtk.key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
2014 		       data->tkip_mic_key, sizeof(data->tkip_mic_key));
2015 }
2016 
2017 static void iwl_mvm_convert_gtk_v3(struct iwl_wowlan_status_data *status,
2018 				   struct iwl_wowlan_gtk_status_v3 *data)
2019 {
2020 	/* The parts we need are identical in v2 and v3 */
2021 #define CHECK(_f) do {							\
2022 	BUILD_BUG_ON(offsetof(struct iwl_wowlan_gtk_status_v2, _f) !=	\
2023 		     offsetof(struct iwl_wowlan_gtk_status_v3, _f));	\
2024 	BUILD_BUG_ON(offsetofend(struct iwl_wowlan_gtk_status_v2, _f) !=\
2025 		     offsetofend(struct iwl_wowlan_gtk_status_v3, _f));	\
2026 } while (0)
2027 
2028 	CHECK(key);
2029 	CHECK(key_len);
2030 	CHECK(key_flags);
2031 	CHECK(tkip_mic_key);
2032 #undef CHECK
2033 
2034 	iwl_mvm_convert_gtk_v2(status, (void *)data);
2035 }
2036 
2037 static void iwl_mvm_convert_igtk(struct iwl_wowlan_status_data *status,
2038 				 struct iwl_wowlan_igtk_status *data)
2039 {
2040 	const u8 *ipn = data->ipn;
2041 
2042 	BUILD_BUG_ON(sizeof(status->igtk.key) < sizeof(data->key));
2043 
2044 	status->igtk.len = data->key_len;
2045 	status->igtk.flags = data->key_flags;
2046 
2047 	memcpy(status->igtk.key, data->key, sizeof(data->key));
2048 
2049 	status->igtk.ipn = ((u64)ipn[5] <<  0) |
2050 			   ((u64)ipn[4] <<  8) |
2051 			   ((u64)ipn[3] << 16) |
2052 			   ((u64)ipn[2] << 24) |
2053 			   ((u64)ipn[1] << 32) |
2054 			   ((u64)ipn[0] << 40);
2055 }
2056 
2057 static struct iwl_wowlan_status_data *
2058 iwl_mvm_send_wowlan_get_status(struct iwl_mvm *mvm, u8 sta_id)
2059 {
2060 	struct iwl_wowlan_status_data *status;
2061 	struct iwl_wowlan_get_status_cmd get_status_cmd = {
2062 		.sta_id = cpu_to_le32(sta_id),
2063 	};
2064 	struct iwl_host_cmd cmd = {
2065 		.id = WOWLAN_GET_STATUSES,
2066 		.flags = CMD_WANT_SKB,
2067 		.data = { &get_status_cmd, },
2068 		.len = { sizeof(get_status_cmd), },
2069 	};
2070 	int ret, len;
2071 	u8 notif_ver;
2072 	u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id,
2073 					   IWL_FW_CMD_VER_UNKNOWN);
2074 
2075 	if (cmd_ver == IWL_FW_CMD_VER_UNKNOWN)
2076 		cmd.len[0] = 0;
2077 
2078 	lockdep_assert_held(&mvm->mutex);
2079 
2080 	ret = iwl_mvm_send_cmd(mvm, &cmd);
2081 	if (ret) {
2082 		IWL_ERR(mvm, "failed to query wakeup status (%d)\n", ret);
2083 		return ERR_PTR(ret);
2084 	}
2085 
2086 	len = iwl_rx_packet_payload_len(cmd.resp_pkt);
2087 
2088 	/* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */
2089 	notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP,
2090 					    WOWLAN_GET_STATUSES, 0);
2091 	if (!notif_ver)
2092 		notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
2093 						    WOWLAN_GET_STATUSES, 7);
2094 
2095 	if (!fw_has_api(&mvm->fw->ucode_capa,
2096 			IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL)) {
2097 		struct iwl_wowlan_status_v6 *v6 = (void *)cmd.resp_pkt->data;
2098 
2099 		status = iwl_mvm_parse_wowlan_status_common_v6(mvm, v6, len);
2100 		if (!status)
2101 			goto out_free_resp;
2102 
2103 		BUILD_BUG_ON(sizeof(v6->gtk.decrypt_key) >
2104 			     sizeof(status->gtk.key));
2105 		BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY +
2106 			     sizeof(v6->gtk.tkip_mic_key) >
2107 			     sizeof(status->gtk.key));
2108 
2109 		/* copy GTK info to the right place */
2110 		memcpy(status->gtk.key, v6->gtk.decrypt_key,
2111 		       sizeof(v6->gtk.decrypt_key));
2112 		memcpy(status->gtk.key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
2113 		       v6->gtk.tkip_mic_key,
2114 		       sizeof(v6->gtk.tkip_mic_key));
2115 
2116 		iwl_mvm_convert_key_counters(status, &v6->gtk.rsc.all_tsc_rsc);
2117 
2118 		/* hardcode the key length to 16 since v6 only supports 16 */
2119 		status->gtk.len = 16;
2120 
2121 		/*
2122 		 * The key index only uses 2 bits (values 0 to 3) and
2123 		 * we always set bit 7 which means this is the
2124 		 * currently used key.
2125 		 */
2126 		status->gtk.flags = v6->gtk.key_index | BIT(7);
2127 	} else if (notif_ver == 7) {
2128 		struct iwl_wowlan_status_v7 *v7 = (void *)cmd.resp_pkt->data;
2129 
2130 		status = iwl_mvm_parse_wowlan_status_common_v7(mvm, v7, len);
2131 		if (!status)
2132 			goto out_free_resp;
2133 
2134 		iwl_mvm_convert_key_counters(status, &v7->gtk[0].rsc.all_tsc_rsc);
2135 		iwl_mvm_convert_gtk_v2(status, &v7->gtk[0]);
2136 		iwl_mvm_convert_igtk(status, &v7->igtk[0]);
2137 	} else if (notif_ver == 9 || notif_ver == 10 || notif_ver == 11) {
2138 		struct iwl_wowlan_status_v9 *v9 = (void *)cmd.resp_pkt->data;
2139 
2140 		/* these three command versions have same layout and size, the
2141 		 * difference is only in a few not used (reserved) fields.
2142 		 */
2143 		status = iwl_mvm_parse_wowlan_status_common_v9(mvm, v9, len);
2144 		if (!status)
2145 			goto out_free_resp;
2146 
2147 		iwl_mvm_convert_key_counters(status, &v9->gtk[0].rsc.all_tsc_rsc);
2148 		iwl_mvm_convert_gtk_v2(status, &v9->gtk[0]);
2149 		iwl_mvm_convert_igtk(status, &v9->igtk[0]);
2150 
2151 		status->tid_tear_down = v9->tid_tear_down;
2152 	} else if (notif_ver == 12) {
2153 		struct iwl_wowlan_status_v12 *v12 = (void *)cmd.resp_pkt->data;
2154 
2155 		status = iwl_mvm_parse_wowlan_status_common_v12(mvm, v12, len);
2156 		if (!status)
2157 			goto out_free_resp;
2158 
2159 		iwl_mvm_convert_key_counters_v5(status, &v12->gtk[0].sc);
2160 		iwl_mvm_convert_gtk_v3(status, &v12->gtk[0]);
2161 		iwl_mvm_convert_igtk(status, &v12->igtk[0]);
2162 
2163 		status->tid_tear_down = v12->tid_tear_down;
2164 	} else {
2165 		IWL_ERR(mvm,
2166 			"Firmware advertises unknown WoWLAN status response %d!\n",
2167 			notif_ver);
2168 		status = NULL;
2169 	}
2170 
2171 out_free_resp:
2172 	iwl_free_resp(&cmd);
2173 	return status;
2174 }
2175 
2176 static struct iwl_wowlan_status_data *
2177 iwl_mvm_get_wakeup_status(struct iwl_mvm *mvm, u8 sta_id)
2178 {
2179 	u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, OFFLOADS_QUERY_CMD,
2180 					   IWL_FW_CMD_VER_UNKNOWN);
2181 	__le32 station_id = cpu_to_le32(sta_id);
2182 	u32 cmd_size = cmd_ver != IWL_FW_CMD_VER_UNKNOWN ? sizeof(station_id) : 0;
2183 
2184 	if (!mvm->net_detect) {
2185 		/* only for tracing for now */
2186 		int ret = iwl_mvm_send_cmd_pdu(mvm, OFFLOADS_QUERY_CMD, 0,
2187 					       cmd_size, &station_id);
2188 		if (ret)
2189 			IWL_ERR(mvm, "failed to query offload statistics (%d)\n", ret);
2190 	}
2191 
2192 	return iwl_mvm_send_wowlan_get_status(mvm, sta_id);
2193 }
2194 
2195 /* releases the MVM mutex */
2196 static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm,
2197 					 struct ieee80211_vif *vif)
2198 {
2199 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2200 	struct iwl_wowlan_status_data *status;
2201 	int i;
2202 	bool keep;
2203 	struct iwl_mvm_sta *mvm_ap_sta;
2204 
2205 	status = iwl_mvm_get_wakeup_status(mvm, mvmvif->ap_sta_id);
2206 	if (!status)
2207 		goto out_unlock;
2208 
2209 	IWL_DEBUG_WOWLAN(mvm, "wakeup reason 0x%x\n",
2210 			 status->wakeup_reasons);
2211 
2212 	/* still at hard-coded place 0 for D3 image */
2213 	mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, 0);
2214 	if (!mvm_ap_sta)
2215 		goto out_free;
2216 
2217 	for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
2218 		u16 seq = status->qos_seq_ctr[i];
2219 		/* firmware stores last-used value, we store next value */
2220 		seq += 0x10;
2221 		mvm_ap_sta->tid_data[i].seq_number = seq;
2222 	}
2223 
2224 	if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000) {
2225 		i = mvm->offload_tid;
2226 		iwl_trans_set_q_ptrs(mvm->trans,
2227 				     mvm_ap_sta->tid_data[i].txq_id,
2228 				     mvm_ap_sta->tid_data[i].seq_number >> 4);
2229 	}
2230 
2231 	/* now we have all the data we need, unlock to avoid mac80211 issues */
2232 	mutex_unlock(&mvm->mutex);
2233 
2234 	iwl_mvm_report_wakeup_reasons(mvm, vif, status);
2235 
2236 	keep = iwl_mvm_setup_connection_keep(mvm, vif, status);
2237 
2238 	kfree(status);
2239 	return keep;
2240 
2241 out_free:
2242 	kfree(status);
2243 out_unlock:
2244 	mutex_unlock(&mvm->mutex);
2245 	return false;
2246 }
2247 
2248 #define ND_QUERY_BUF_LEN (sizeof(struct iwl_scan_offload_profile_match) * \
2249 			  IWL_SCAN_MAX_PROFILES)
2250 
2251 struct iwl_mvm_nd_query_results {
2252 	u32 matched_profiles;
2253 	u8 matches[ND_QUERY_BUF_LEN];
2254 };
2255 
2256 static int
2257 iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm,
2258 				struct iwl_mvm_nd_query_results *results)
2259 {
2260 	struct iwl_scan_offload_profiles_query *query;
2261 	struct iwl_host_cmd cmd = {
2262 		.id = SCAN_OFFLOAD_PROFILES_QUERY_CMD,
2263 		.flags = CMD_WANT_SKB,
2264 	};
2265 	int ret, len;
2266 	size_t query_len, matches_len;
2267 	int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw);
2268 
2269 	ret = iwl_mvm_send_cmd(mvm, &cmd);
2270 	if (ret) {
2271 		IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret);
2272 		return ret;
2273 	}
2274 
2275 	if (fw_has_api(&mvm->fw->ucode_capa,
2276 		       IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2277 		query_len = sizeof(struct iwl_scan_offload_profiles_query);
2278 		matches_len = sizeof(struct iwl_scan_offload_profile_match) *
2279 			max_profiles;
2280 	} else {
2281 		query_len = sizeof(struct iwl_scan_offload_profiles_query_v1);
2282 		matches_len = sizeof(struct iwl_scan_offload_profile_match_v1) *
2283 			max_profiles;
2284 	}
2285 
2286 	len = iwl_rx_packet_payload_len(cmd.resp_pkt);
2287 	if (len < query_len) {
2288 		IWL_ERR(mvm, "Invalid scan offload profiles query response!\n");
2289 		ret = -EIO;
2290 		goto out_free_resp;
2291 	}
2292 
2293 	query = (void *)cmd.resp_pkt->data;
2294 
2295 	results->matched_profiles = le32_to_cpu(query->matched_profiles);
2296 	memcpy(results->matches, query->matches, matches_len);
2297 
2298 #ifdef CONFIG_IWLWIFI_DEBUGFS
2299 	mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done);
2300 #endif
2301 
2302 out_free_resp:
2303 	iwl_free_resp(&cmd);
2304 	return ret;
2305 }
2306 
2307 static int iwl_mvm_query_num_match_chans(struct iwl_mvm *mvm,
2308 					 struct iwl_mvm_nd_query_results *query,
2309 					 int idx)
2310 {
2311 	int n_chans = 0, i;
2312 
2313 	if (fw_has_api(&mvm->fw->ucode_capa,
2314 		       IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2315 		struct iwl_scan_offload_profile_match *matches =
2316 			(struct iwl_scan_offload_profile_match *)query->matches;
2317 
2318 		for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; i++)
2319 			n_chans += hweight8(matches[idx].matching_channels[i]);
2320 	} else {
2321 		struct iwl_scan_offload_profile_match_v1 *matches =
2322 			(struct iwl_scan_offload_profile_match_v1 *)query->matches;
2323 
2324 		for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1; i++)
2325 			n_chans += hweight8(matches[idx].matching_channels[i]);
2326 	}
2327 
2328 	return n_chans;
2329 }
2330 
2331 static void iwl_mvm_query_set_freqs(struct iwl_mvm *mvm,
2332 				    struct iwl_mvm_nd_query_results *query,
2333 				    struct cfg80211_wowlan_nd_match *match,
2334 				    int idx)
2335 {
2336 	int i;
2337 
2338 	if (fw_has_api(&mvm->fw->ucode_capa,
2339 		       IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2340 		struct iwl_scan_offload_profile_match *matches =
2341 			(struct iwl_scan_offload_profile_match *)query->matches;
2342 
2343 		for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; i++)
2344 			if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
2345 				match->channels[match->n_channels++] =
2346 					mvm->nd_channels[i]->center_freq;
2347 	} else {
2348 		struct iwl_scan_offload_profile_match_v1 *matches =
2349 			(struct iwl_scan_offload_profile_match_v1 *)query->matches;
2350 
2351 		for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1 * 8; i++)
2352 			if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
2353 				match->channels[match->n_channels++] =
2354 					mvm->nd_channels[i]->center_freq;
2355 	}
2356 }
2357 
2358 static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm,
2359 					    struct ieee80211_vif *vif)
2360 {
2361 	struct cfg80211_wowlan_nd_info *net_detect = NULL;
2362 	struct cfg80211_wowlan_wakeup wakeup = {
2363 		.pattern_idx = -1,
2364 	};
2365 	struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
2366 	struct iwl_wowlan_status_data *status;
2367 	struct iwl_mvm_nd_query_results query;
2368 	unsigned long matched_profiles;
2369 	u32 reasons = 0;
2370 	int i, n_matches, ret;
2371 
2372 	status = iwl_mvm_get_wakeup_status(mvm, IWL_MVM_INVALID_STA);
2373 	if (status) {
2374 		reasons = status->wakeup_reasons;
2375 		kfree(status);
2376 	}
2377 
2378 	if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
2379 		wakeup.rfkill_release = true;
2380 
2381 	if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS)
2382 		goto out;
2383 
2384 	ret = iwl_mvm_netdetect_query_results(mvm, &query);
2385 	if (ret || !query.matched_profiles) {
2386 		wakeup_report = NULL;
2387 		goto out;
2388 	}
2389 
2390 	matched_profiles = query.matched_profiles;
2391 	if (mvm->n_nd_match_sets) {
2392 		n_matches = hweight_long(matched_profiles);
2393 	} else {
2394 		IWL_ERR(mvm, "no net detect match information available\n");
2395 		n_matches = 0;
2396 	}
2397 
2398 	net_detect = kzalloc(struct_size(net_detect, matches, n_matches),
2399 			     GFP_KERNEL);
2400 	if (!net_detect || !n_matches)
2401 		goto out_report_nd;
2402 
2403 	for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) {
2404 		struct cfg80211_wowlan_nd_match *match;
2405 		int idx, n_channels = 0;
2406 
2407 		n_channels = iwl_mvm_query_num_match_chans(mvm, &query, i);
2408 
2409 		match = kzalloc(struct_size(match, channels, n_channels),
2410 				GFP_KERNEL);
2411 		if (!match)
2412 			goto out_report_nd;
2413 
2414 		net_detect->matches[net_detect->n_matches++] = match;
2415 
2416 		/* We inverted the order of the SSIDs in the scan
2417 		 * request, so invert the index here.
2418 		 */
2419 		idx = mvm->n_nd_match_sets - i - 1;
2420 		match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len;
2421 		memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid,
2422 		       match->ssid.ssid_len);
2423 
2424 		if (mvm->n_nd_channels < n_channels)
2425 			continue;
2426 
2427 		iwl_mvm_query_set_freqs(mvm, &query, match, i);
2428 	}
2429 
2430 out_report_nd:
2431 	wakeup.net_detect = net_detect;
2432 out:
2433 	iwl_mvm_free_nd(mvm);
2434 
2435 	mutex_unlock(&mvm->mutex);
2436 	ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
2437 
2438 	if (net_detect) {
2439 		for (i = 0; i < net_detect->n_matches; i++)
2440 			kfree(net_detect->matches[i]);
2441 		kfree(net_detect);
2442 	}
2443 }
2444 
2445 static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac,
2446 				       struct ieee80211_vif *vif)
2447 {
2448 	/* skip the one we keep connection on */
2449 	if (data == vif)
2450 		return;
2451 
2452 	if (vif->type == NL80211_IFTYPE_STATION)
2453 		ieee80211_resume_disconnect(vif);
2454 }
2455 
2456 static bool iwl_mvm_rt_status(struct iwl_trans *trans, u32 base, u32 *err_id)
2457 {
2458 	struct error_table_start {
2459 		/* cf. struct iwl_error_event_table */
2460 		u32 valid;
2461 		__le32 err_id;
2462 	} err_info;
2463 
2464 	if (!base)
2465 		return false;
2466 
2467 	iwl_trans_read_mem_bytes(trans, base,
2468 				 &err_info, sizeof(err_info));
2469 	if (err_info.valid && err_id)
2470 		*err_id = le32_to_cpu(err_info.err_id);
2471 
2472 	return !!err_info.valid;
2473 }
2474 
2475 static bool iwl_mvm_check_rt_status(struct iwl_mvm *mvm,
2476 				   struct ieee80211_vif *vif)
2477 {
2478 	u32 err_id;
2479 
2480 	/* check for lmac1 error */
2481 	if (iwl_mvm_rt_status(mvm->trans,
2482 			      mvm->trans->dbg.lmac_error_event_table[0],
2483 			      &err_id)) {
2484 		if (err_id == RF_KILL_INDICATOR_FOR_WOWLAN) {
2485 			struct cfg80211_wowlan_wakeup wakeup = {
2486 				.rfkill_release = true,
2487 			};
2488 			ieee80211_report_wowlan_wakeup(vif, &wakeup,
2489 						       GFP_KERNEL);
2490 		}
2491 		return true;
2492 	}
2493 
2494 	/* check if we have lmac2 set and check for error */
2495 	if (iwl_mvm_rt_status(mvm->trans,
2496 			      mvm->trans->dbg.lmac_error_event_table[1], NULL))
2497 		return true;
2498 
2499 	/* check for umac error */
2500 	if (iwl_mvm_rt_status(mvm->trans,
2501 			      mvm->trans->dbg.umac_error_event_table, NULL))
2502 		return true;
2503 
2504 	return false;
2505 }
2506 
2507 static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test)
2508 {
2509 	struct ieee80211_vif *vif = NULL;
2510 	int ret = 1;
2511 	enum iwl_d3_status d3_status;
2512 	bool keep = false;
2513 	bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
2514 					 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2515 	bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa,
2516 				      IWL_UCODE_TLV_CAPA_D0I3_END_FIRST);
2517 
2518 	mutex_lock(&mvm->mutex);
2519 
2520 	mvm->last_reset_or_resume_time_jiffies = jiffies;
2521 
2522 	/* get the BSS vif pointer again */
2523 	vif = iwl_mvm_get_bss_vif(mvm);
2524 	if (IS_ERR_OR_NULL(vif))
2525 		goto err;
2526 
2527 	iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
2528 
2529 	if (iwl_mvm_check_rt_status(mvm, vif)) {
2530 		set_bit(STATUS_FW_ERROR, &mvm->trans->status);
2531 		iwl_mvm_dump_nic_error_log(mvm);
2532 		iwl_dbg_tlv_time_point(&mvm->fwrt,
2533 				       IWL_FW_INI_TIME_POINT_FW_ASSERT, NULL);
2534 		iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert,
2535 					false, 0);
2536 		ret = 1;
2537 		goto err;
2538 	}
2539 
2540 	ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, !unified_image);
2541 	if (ret)
2542 		goto err;
2543 
2544 	if (d3_status != IWL_D3_STATUS_ALIVE) {
2545 		IWL_INFO(mvm, "Device was reset during suspend\n");
2546 		goto err;
2547 	}
2548 
2549 	if (d0i3_first) {
2550 		struct iwl_host_cmd cmd = {
2551 			.id = D0I3_END_CMD,
2552 			.flags = CMD_WANT_SKB | CMD_SEND_IN_D3,
2553 		};
2554 		int len;
2555 
2556 		ret = iwl_mvm_send_cmd(mvm, &cmd);
2557 		if (ret < 0) {
2558 			IWL_ERR(mvm, "Failed to send D0I3_END_CMD first (%d)\n",
2559 				ret);
2560 			goto err;
2561 		}
2562 		switch (mvm->cmd_ver.d0i3_resp) {
2563 		case 0:
2564 			break;
2565 		case 1:
2566 			len = iwl_rx_packet_payload_len(cmd.resp_pkt);
2567 			if (len != sizeof(u32)) {
2568 				IWL_ERR(mvm,
2569 					"Error with D0I3_END_CMD response size (%d)\n",
2570 					len);
2571 				goto err;
2572 			}
2573 			if (IWL_D0I3_RESET_REQUIRE &
2574 			    le32_to_cpu(*(__le32 *)cmd.resp_pkt->data)) {
2575 				iwl_write32(mvm->trans, CSR_RESET,
2576 					    CSR_RESET_REG_FLAG_FORCE_NMI);
2577 				iwl_free_resp(&cmd);
2578 			}
2579 			break;
2580 		default:
2581 			WARN_ON(1);
2582 		}
2583 	}
2584 
2585 	/* after the successful handshake, we're out of D3 */
2586 	mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
2587 
2588 	/*
2589 	 * Query the current location and source from the D3 firmware so we
2590 	 * can play it back when we re-intiailize the D0 firmware
2591 	 */
2592 	iwl_mvm_update_changed_regdom(mvm);
2593 
2594 	/* Re-configure PPAG settings */
2595 	iwl_mvm_ppag_send_cmd(mvm);
2596 
2597 	if (!unified_image)
2598 		/*  Re-configure default SAR profile */
2599 		iwl_mvm_sar_select_profile(mvm, 1, 1);
2600 
2601 	if (mvm->net_detect) {
2602 		/* If this is a non-unified image, we restart the FW,
2603 		 * so no need to stop the netdetect scan.  If that
2604 		 * fails, continue and try to get the wake-up reasons,
2605 		 * but trigger a HW restart by keeping a failure code
2606 		 * in ret.
2607 		 */
2608 		if (unified_image)
2609 			ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT,
2610 						false);
2611 
2612 		iwl_mvm_query_netdetect_reasons(mvm, vif);
2613 		/* has unlocked the mutex, so skip that */
2614 		goto out;
2615 	} else {
2616 		keep = iwl_mvm_query_wakeup_reasons(mvm, vif);
2617 #ifdef CONFIG_IWLWIFI_DEBUGFS
2618 		if (keep)
2619 			mvm->keep_vif = vif;
2620 #endif
2621 		/* has unlocked the mutex, so skip that */
2622 		goto out_iterate;
2623 	}
2624 
2625 err:
2626 	iwl_mvm_free_nd(mvm);
2627 	mutex_unlock(&mvm->mutex);
2628 
2629 out_iterate:
2630 	if (!test)
2631 		ieee80211_iterate_active_interfaces_mtx(mvm->hw,
2632 			IEEE80211_IFACE_ITER_NORMAL,
2633 			iwl_mvm_d3_disconnect_iter, keep ? vif : NULL);
2634 
2635 out:
2636 	clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
2637 
2638 	/* no need to reset the device in unified images, if successful */
2639 	if (unified_image && !ret) {
2640 		/* nothing else to do if we already sent D0I3_END_CMD */
2641 		if (d0i3_first)
2642 			return 0;
2643 
2644 		ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL);
2645 		if (!ret)
2646 			return 0;
2647 	}
2648 
2649 	/*
2650 	 * Reconfigure the device in one of the following cases:
2651 	 * 1. We are not using a unified image
2652 	 * 2. We are using a unified image but had an error while exiting D3
2653 	 */
2654 	set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
2655 
2656 	/* regardless of what happened, we're now out of D3 */
2657 	mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
2658 
2659 	return 1;
2660 }
2661 
2662 int iwl_mvm_resume(struct ieee80211_hw *hw)
2663 {
2664 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2665 	int ret;
2666 
2667 	ret = __iwl_mvm_resume(mvm, false);
2668 
2669 	iwl_mvm_resume_tcm(mvm);
2670 
2671 	iwl_fw_runtime_resume(&mvm->fwrt);
2672 
2673 	return ret;
2674 }
2675 
2676 void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled)
2677 {
2678 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2679 
2680 	device_set_wakeup_enable(mvm->trans->dev, enabled);
2681 }
2682 
2683 #ifdef CONFIG_IWLWIFI_DEBUGFS
2684 static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file)
2685 {
2686 	struct iwl_mvm *mvm = inode->i_private;
2687 	int err;
2688 
2689 	if (mvm->d3_test_active)
2690 		return -EBUSY;
2691 
2692 	file->private_data = inode->i_private;
2693 
2694 	iwl_mvm_pause_tcm(mvm, true);
2695 
2696 	iwl_fw_runtime_suspend(&mvm->fwrt);
2697 
2698 	/* start pseudo D3 */
2699 	rtnl_lock();
2700 	wiphy_lock(mvm->hw->wiphy);
2701 	err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true);
2702 	wiphy_unlock(mvm->hw->wiphy);
2703 	rtnl_unlock();
2704 	if (err > 0)
2705 		err = -EINVAL;
2706 	if (err)
2707 		return err;
2708 
2709 	mvm->d3_test_active = true;
2710 	mvm->keep_vif = NULL;
2711 	return 0;
2712 }
2713 
2714 static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf,
2715 				    size_t count, loff_t *ppos)
2716 {
2717 	struct iwl_mvm *mvm = file->private_data;
2718 	u32 pme_asserted;
2719 
2720 	while (true) {
2721 		/* read pme_ptr if available */
2722 		if (mvm->d3_test_pme_ptr) {
2723 			pme_asserted = iwl_trans_read_mem32(mvm->trans,
2724 						mvm->d3_test_pme_ptr);
2725 			if (pme_asserted)
2726 				break;
2727 		}
2728 
2729 		if (msleep_interruptible(100))
2730 			break;
2731 	}
2732 
2733 	return 0;
2734 }
2735 
2736 static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac,
2737 					      struct ieee80211_vif *vif)
2738 {
2739 	/* skip the one we keep connection on */
2740 	if (_data == vif)
2741 		return;
2742 
2743 	if (vif->type == NL80211_IFTYPE_STATION)
2744 		ieee80211_connection_loss(vif);
2745 }
2746 
2747 static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file)
2748 {
2749 	struct iwl_mvm *mvm = inode->i_private;
2750 	bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
2751 					 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2752 
2753 	mvm->d3_test_active = false;
2754 
2755 	iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
2756 
2757 	rtnl_lock();
2758 	wiphy_lock(mvm->hw->wiphy);
2759 	__iwl_mvm_resume(mvm, true);
2760 	wiphy_unlock(mvm->hw->wiphy);
2761 	rtnl_unlock();
2762 
2763 	iwl_mvm_resume_tcm(mvm);
2764 
2765 	iwl_fw_runtime_resume(&mvm->fwrt);
2766 
2767 	iwl_abort_notification_waits(&mvm->notif_wait);
2768 	if (!unified_image) {
2769 		int remaining_time = 10;
2770 
2771 		ieee80211_restart_hw(mvm->hw);
2772 
2773 		/* wait for restart and disconnect all interfaces */
2774 		while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2775 		       remaining_time > 0) {
2776 			remaining_time--;
2777 			msleep(1000);
2778 		}
2779 
2780 		if (remaining_time == 0)
2781 			IWL_ERR(mvm, "Timed out waiting for HW restart!\n");
2782 	}
2783 
2784 	ieee80211_iterate_active_interfaces_atomic(
2785 		mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
2786 		iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif);
2787 
2788 	return 0;
2789 }
2790 
2791 const struct file_operations iwl_dbgfs_d3_test_ops = {
2792 	.llseek = no_llseek,
2793 	.open = iwl_mvm_d3_test_open,
2794 	.read = iwl_mvm_d3_test_read,
2795 	.release = iwl_mvm_d3_test_release,
2796 };
2797 #endif
2798