xref: /linux/drivers/net/wireless/intel/iwlwifi/mvm/d3.c (revision f6154d8babbb8a98f0d3ea325aafae2e33bfd8be)
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 = 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->deflink.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 =
497 				cpu_to_le32(mvmvif->deflink.ap_sta_id);
498 		} else {
499 			/* ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN */
500 			size = sizeof(data.rsc_tsc->params);
501 		}
502 
503 		ieee80211_iter_keys(mvm->hw, vif,
504 				    iwl_mvm_wowlan_get_rsc_tsc_data,
505 				    &data);
506 
507 		if (data.have_rsc_tsc)
508 			ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM,
509 						   CMD_ASYNC, size,
510 						   data.rsc_tsc);
511 		else
512 			ret = 0;
513 		kfree(data.rsc_tsc);
514 	} else {
515 		ret = 0;
516 		WARN_ON_ONCE(1);
517 	}
518 
519 	return ret;
520 }
521 
522 struct wowlan_key_tkip_data {
523 	struct iwl_wowlan_tkip_params_cmd tkip;
524 	bool have_tkip_keys;
525 };
526 
527 static void iwl_mvm_wowlan_get_tkip_data(struct ieee80211_hw *hw,
528 					 struct ieee80211_vif *vif,
529 					 struct ieee80211_sta *sta,
530 					 struct ieee80211_key_conf *key,
531 					 void *_data)
532 {
533 	struct wowlan_key_tkip_data *data = _data;
534 	struct iwl_p1k_cache *rx_p1ks;
535 	u8 *rx_mic_key;
536 	struct ieee80211_key_seq seq;
537 	u32 cur_rx_iv32 = 0;
538 	u16 p1k[IWL_P1K_SIZE];
539 	int i;
540 
541 	switch (key->cipher) {
542 	default:
543 		break;
544 	case WLAN_CIPHER_SUITE_TKIP:
545 		if (sta) {
546 			u64 pn64;
547 
548 			rx_p1ks = data->tkip.rx_uni;
549 
550 			pn64 = atomic64_read(&key->tx_pn);
551 
552 			ieee80211_get_tkip_p1k_iv(key, TKIP_PN_TO_IV32(pn64),
553 						  p1k);
554 			iwl_mvm_convert_p1k(p1k, data->tkip.tx.p1k);
555 
556 			memcpy(data->tkip.mic_keys.tx,
557 			       &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
558 			       IWL_MIC_KEY_SIZE);
559 
560 			rx_mic_key = data->tkip.mic_keys.rx_unicast;
561 		} else {
562 			rx_p1ks = data->tkip.rx_multi;
563 			rx_mic_key = data->tkip.mic_keys.rx_mcast;
564 		}
565 
566 		for (i = 0; i < IWL_NUM_RSC; i++) {
567 			ieee80211_get_key_rx_seq(key, i, &seq);
568 			/* wrapping isn't allowed, AP must rekey */
569 			if (seq.tkip.iv32 > cur_rx_iv32)
570 				cur_rx_iv32 = seq.tkip.iv32;
571 		}
572 
573 		ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
574 					  cur_rx_iv32, p1k);
575 		iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k);
576 		ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
577 					  cur_rx_iv32 + 1, p1k);
578 		iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k);
579 
580 		memcpy(rx_mic_key,
581 		       &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
582 		       IWL_MIC_KEY_SIZE);
583 
584 		data->have_tkip_keys = true;
585 		break;
586 	}
587 }
588 
589 struct wowlan_key_gtk_type_iter {
590 	struct iwl_wowlan_kek_kck_material_cmd_v4 *kek_kck_cmd;
591 };
592 
593 static void iwl_mvm_wowlan_gtk_type_iter(struct ieee80211_hw *hw,
594 					 struct ieee80211_vif *vif,
595 					 struct ieee80211_sta *sta,
596 					 struct ieee80211_key_conf *key,
597 					 void *_data)
598 {
599 	struct wowlan_key_gtk_type_iter *data = _data;
600 
601 	switch (key->cipher) {
602 	default:
603 		return;
604 	case WLAN_CIPHER_SUITE_TKIP:
605 		if (!sta)
606 			data->kek_kck_cmd->gtk_cipher =
607 				cpu_to_le32(STA_KEY_FLG_TKIP);
608 		return;
609 	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
610 	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
611 		data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_GCMP);
612 		return;
613 	case WLAN_CIPHER_SUITE_AES_CMAC:
614 		data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_CCM);
615 		return;
616 	case WLAN_CIPHER_SUITE_CCMP:
617 		if (!sta)
618 			data->kek_kck_cmd->gtk_cipher =
619 				cpu_to_le32(STA_KEY_FLG_CCM);
620 		return;
621 	case WLAN_CIPHER_SUITE_GCMP:
622 	case WLAN_CIPHER_SUITE_GCMP_256:
623 		if (!sta)
624 			data->kek_kck_cmd->gtk_cipher =
625 				cpu_to_le32(STA_KEY_FLG_GCMP);
626 		return;
627 	}
628 }
629 
630 static int iwl_mvm_send_patterns_v1(struct iwl_mvm *mvm,
631 				    struct cfg80211_wowlan *wowlan)
632 {
633 	struct iwl_wowlan_patterns_cmd_v1 *pattern_cmd;
634 	struct iwl_host_cmd cmd = {
635 		.id = WOWLAN_PATTERNS,
636 		.dataflags[0] = IWL_HCMD_DFL_NOCOPY,
637 	};
638 	int i, err;
639 
640 	if (!wowlan->n_patterns)
641 		return 0;
642 
643 	cmd.len[0] = struct_size(pattern_cmd, patterns, wowlan->n_patterns);
644 
645 	pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
646 	if (!pattern_cmd)
647 		return -ENOMEM;
648 
649 	pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
650 
651 	for (i = 0; i < wowlan->n_patterns; i++) {
652 		int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
653 
654 		memcpy(&pattern_cmd->patterns[i].mask,
655 		       wowlan->patterns[i].mask, mask_len);
656 		memcpy(&pattern_cmd->patterns[i].pattern,
657 		       wowlan->patterns[i].pattern,
658 		       wowlan->patterns[i].pattern_len);
659 		pattern_cmd->patterns[i].mask_size = mask_len;
660 		pattern_cmd->patterns[i].pattern_size =
661 			wowlan->patterns[i].pattern_len;
662 	}
663 
664 	cmd.data[0] = pattern_cmd;
665 	err = iwl_mvm_send_cmd(mvm, &cmd);
666 	kfree(pattern_cmd);
667 	return err;
668 }
669 
670 static int iwl_mvm_send_patterns(struct iwl_mvm *mvm,
671 				 struct ieee80211_vif *vif,
672 				 struct cfg80211_wowlan *wowlan)
673 {
674 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
675 	struct iwl_wowlan_patterns_cmd *pattern_cmd;
676 	struct iwl_host_cmd cmd = {
677 		.id = WOWLAN_PATTERNS,
678 		.dataflags[0] = IWL_HCMD_DFL_NOCOPY,
679 	};
680 	int i, err;
681 	int ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id,
682 					IWL_FW_CMD_VER_UNKNOWN);
683 
684 	if (!wowlan->n_patterns)
685 		return 0;
686 
687 	cmd.len[0] = sizeof(*pattern_cmd) +
688 		wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern_v2);
689 
690 	pattern_cmd = kzalloc(cmd.len[0], GFP_KERNEL);
691 	if (!pattern_cmd)
692 		return -ENOMEM;
693 
694 	pattern_cmd->n_patterns = wowlan->n_patterns;
695 	if (ver >= 3)
696 		pattern_cmd->sta_id = mvmvif->deflink.ap_sta_id;
697 
698 	for (i = 0; i < wowlan->n_patterns; i++) {
699 		int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
700 
701 		pattern_cmd->patterns[i].pattern_type =
702 			WOWLAN_PATTERN_TYPE_BITMASK;
703 
704 		memcpy(&pattern_cmd->patterns[i].u.bitmask.mask,
705 		       wowlan->patterns[i].mask, mask_len);
706 		memcpy(&pattern_cmd->patterns[i].u.bitmask.pattern,
707 		       wowlan->patterns[i].pattern,
708 		       wowlan->patterns[i].pattern_len);
709 		pattern_cmd->patterns[i].u.bitmask.mask_size = mask_len;
710 		pattern_cmd->patterns[i].u.bitmask.pattern_size =
711 			wowlan->patterns[i].pattern_len;
712 	}
713 
714 	cmd.data[0] = pattern_cmd;
715 	err = iwl_mvm_send_cmd(mvm, &cmd);
716 	kfree(pattern_cmd);
717 	return err;
718 }
719 
720 static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
721 				struct ieee80211_sta *ap_sta)
722 {
723 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
724 	struct ieee80211_chanctx_conf *ctx;
725 	u8 chains_static, chains_dynamic;
726 	struct cfg80211_chan_def chandef;
727 	int ret, i;
728 	struct iwl_binding_cmd_v1 binding_cmd = {};
729 	struct iwl_time_quota_cmd quota_cmd = {};
730 	struct iwl_time_quota_data *quota;
731 	u32 status;
732 
733 	if (WARN_ON_ONCE(iwl_mvm_is_cdb_supported(mvm)))
734 		return -EINVAL;
735 
736 	/* add back the PHY */
737 	if (WARN_ON(!mvmvif->deflink.phy_ctxt))
738 		return -EINVAL;
739 
740 	rcu_read_lock();
741 	ctx = rcu_dereference(vif->bss_conf.chanctx_conf);
742 	if (WARN_ON(!ctx)) {
743 		rcu_read_unlock();
744 		return -EINVAL;
745 	}
746 	chandef = ctx->def;
747 	chains_static = ctx->rx_chains_static;
748 	chains_dynamic = ctx->rx_chains_dynamic;
749 	rcu_read_unlock();
750 
751 	ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->deflink.phy_ctxt, &chandef,
752 				   chains_static, chains_dynamic);
753 	if (ret)
754 		return ret;
755 
756 	/* add back the MAC */
757 	mvmvif->uploaded = false;
758 
759 	if (WARN_ON(!vif->cfg.assoc))
760 		return -EINVAL;
761 
762 	ret = iwl_mvm_mac_ctxt_add(mvm, vif);
763 	if (ret)
764 		return ret;
765 
766 	/* add back binding - XXX refactor? */
767 	binding_cmd.id_and_color =
768 		cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id,
769 						mvmvif->deflink.phy_ctxt->color));
770 	binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD);
771 	binding_cmd.phy =
772 		cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id,
773 						mvmvif->deflink.phy_ctxt->color));
774 	binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
775 							      mvmvif->color));
776 	for (i = 1; i < MAX_MACS_IN_BINDING; i++)
777 		binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID);
778 
779 	status = 0;
780 	ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD,
781 					  IWL_BINDING_CMD_SIZE_V1, &binding_cmd,
782 					  &status);
783 	if (ret) {
784 		IWL_ERR(mvm, "Failed to add binding: %d\n", ret);
785 		return ret;
786 	}
787 
788 	if (status) {
789 		IWL_ERR(mvm, "Binding command failed: %u\n", status);
790 		return -EIO;
791 	}
792 
793 	ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false, 0);
794 	if (ret)
795 		return ret;
796 	rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->deflink.ap_sta_id],
797 			   ap_sta);
798 
799 	ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
800 	if (ret)
801 		return ret;
802 
803 	/* and some quota */
804 	quota = iwl_mvm_quota_cmd_get_quota(mvm, &quota_cmd, 0);
805 	quota->id_and_color =
806 		cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id,
807 						mvmvif->deflink.phy_ctxt->color));
808 	quota->quota = cpu_to_le32(IWL_MVM_MAX_QUOTA);
809 	quota->max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA);
810 
811 	for (i = 1; i < MAX_BINDINGS; i++) {
812 		quota = iwl_mvm_quota_cmd_get_quota(mvm, &quota_cmd, i);
813 		quota->id_and_color = cpu_to_le32(FW_CTXT_INVALID);
814 	}
815 
816 	ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0,
817 				   iwl_mvm_quota_cmd_size(mvm), &quota_cmd);
818 	if (ret)
819 		IWL_ERR(mvm, "Failed to send quota: %d\n", ret);
820 
821 	if (iwl_mvm_is_lar_supported(mvm) && iwl_mvm_init_fw_regd(mvm, false))
822 		IWL_ERR(mvm, "Failed to initialize D3 LAR information\n");
823 
824 	return 0;
825 }
826 
827 static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm,
828 				       struct ieee80211_vif *vif)
829 {
830 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
831 	struct iwl_nonqos_seq_query_cmd query_cmd = {
832 		.get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET),
833 		.mac_id_n_color =
834 			cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
835 							mvmvif->color)),
836 	};
837 	struct iwl_host_cmd cmd = {
838 		.id = NON_QOS_TX_COUNTER_CMD,
839 		.flags = CMD_WANT_SKB,
840 	};
841 	int err;
842 	u32 size;
843 
844 	cmd.data[0] = &query_cmd;
845 	cmd.len[0] = sizeof(query_cmd);
846 
847 	err = iwl_mvm_send_cmd(mvm, &cmd);
848 	if (err)
849 		return err;
850 
851 	size = iwl_rx_packet_payload_len(cmd.resp_pkt);
852 	if (size < sizeof(__le16)) {
853 		err = -EINVAL;
854 	} else {
855 		err = le16_to_cpup((__le16 *)cmd.resp_pkt->data);
856 		/* firmware returns next, not last-used seqno */
857 		err = (u16) (err - 0x10);
858 	}
859 
860 	iwl_free_resp(&cmd);
861 	return err;
862 }
863 
864 void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
865 {
866 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
867 	struct iwl_nonqos_seq_query_cmd query_cmd = {
868 		.get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET),
869 		.mac_id_n_color =
870 			cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
871 							mvmvif->color)),
872 		.value = cpu_to_le16(mvmvif->seqno),
873 	};
874 
875 	/* return if called during restart, not resume from D3 */
876 	if (!mvmvif->seqno_valid)
877 		return;
878 
879 	mvmvif->seqno_valid = false;
880 
881 	if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0,
882 				 sizeof(query_cmd), &query_cmd))
883 		IWL_ERR(mvm, "failed to set non-QoS seqno\n");
884 }
885 
886 static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm)
887 {
888 	iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
889 
890 	iwl_mvm_stop_device(mvm);
891 	/*
892 	 * Set the HW restart bit -- this is mostly true as we're
893 	 * going to load new firmware and reprogram that, though
894 	 * the reprogramming is going to be manual to avoid adding
895 	 * all the MACs that aren't support.
896 	 * We don't have to clear up everything though because the
897 	 * reprogramming is manual. When we resume, we'll actually
898 	 * go through a proper restart sequence again to switch
899 	 * back to the runtime firmware image.
900 	 */
901 	set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
902 
903 	/* the fw is reset, so all the keys are cleared */
904 	memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
905 
906 	mvm->ptk_ivlen = 0;
907 	mvm->ptk_icvlen = 0;
908 	mvm->ptk_ivlen = 0;
909 	mvm->ptk_icvlen = 0;
910 
911 	return iwl_mvm_load_d3_fw(mvm);
912 }
913 
914 static int
915 iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm,
916 			  struct cfg80211_wowlan *wowlan,
917 			  struct iwl_wowlan_config_cmd *wowlan_config_cmd,
918 			  struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
919 			  struct ieee80211_sta *ap_sta)
920 {
921 	struct iwl_mvm_sta *mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
922 
923 	/* TODO: wowlan_config_cmd->wowlan_ba_teardown_tids */
924 
925 	wowlan_config_cmd->is_11n_connection =
926 					ap_sta->deflink.ht_cap.ht_supported;
927 	wowlan_config_cmd->flags = ENABLE_L3_FILTERING |
928 		ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING;
929 
930 	if (iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_CONFIGURATION, 0) < 6) {
931 		/* Query the last used seqno and set it */
932 		int ret = iwl_mvm_get_last_nonqos_seq(mvm, vif);
933 
934 		if (ret < 0)
935 			return ret;
936 
937 		wowlan_config_cmd->non_qos_seq = cpu_to_le16(ret);
938 	}
939 
940 	iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, wowlan_config_cmd);
941 
942 	if (wowlan->disconnect)
943 		wowlan_config_cmd->wakeup_filter |=
944 			cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
945 				    IWL_WOWLAN_WAKEUP_LINK_CHANGE);
946 	if (wowlan->magic_pkt)
947 		wowlan_config_cmd->wakeup_filter |=
948 			cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET);
949 	if (wowlan->gtk_rekey_failure)
950 		wowlan_config_cmd->wakeup_filter |=
951 			cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
952 	if (wowlan->eap_identity_req)
953 		wowlan_config_cmd->wakeup_filter |=
954 			cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ);
955 	if (wowlan->four_way_handshake)
956 		wowlan_config_cmd->wakeup_filter |=
957 			cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
958 	if (wowlan->n_patterns)
959 		wowlan_config_cmd->wakeup_filter |=
960 			cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH);
961 
962 	if (wowlan->rfkill_release)
963 		wowlan_config_cmd->wakeup_filter |=
964 			cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
965 
966 	if (wowlan->tcp) {
967 		/*
968 		 * Set the "link change" (really "link lost") flag as well
969 		 * since that implies losing the TCP connection.
970 		 */
971 		wowlan_config_cmd->wakeup_filter |=
972 			cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS |
973 				    IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE |
974 				    IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET |
975 				    IWL_WOWLAN_WAKEUP_LINK_CHANGE);
976 	}
977 
978 	if (wowlan->any) {
979 		wowlan_config_cmd->wakeup_filter |=
980 			cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
981 				    IWL_WOWLAN_WAKEUP_LINK_CHANGE |
982 				    IWL_WOWLAN_WAKEUP_RX_FRAME |
983 				    IWL_WOWLAN_WAKEUP_BCN_FILTERING);
984 	}
985 
986 	return 0;
987 }
988 
989 static int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm,
990 					    struct ieee80211_vif *vif)
991 {
992 	bool unified = fw_has_capa(&mvm->fw->ucode_capa,
993 				   IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
994 	struct wowlan_key_reprogram_data key_data = {};
995 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
996 	int ret;
997 	u8 cmd_ver;
998 	size_t cmd_size;
999 
1000 	if (!unified) {
1001 		/*
1002 		 * if we have to configure keys, call ieee80211_iter_keys(),
1003 		 * as we need non-atomic context in order to take the
1004 		 * required locks.
1005 		 */
1006 		/*
1007 		 * Note that currently we don't use CMD_ASYNC in the iterator.
1008 		 * In case of key_data.configure_keys, all the configured
1009 		 * commands are SYNC, and iwl_mvm_wowlan_program_keys() will
1010 		 * take care of locking/unlocking mvm->mutex.
1011 		 */
1012 		ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_program_keys,
1013 				    &key_data);
1014 
1015 		if (key_data.error)
1016 			return -EIO;
1017 	}
1018 
1019 	ret = iwl_mvm_wowlan_config_rsc_tsc(mvm, vif);
1020 	if (ret)
1021 		return ret;
1022 
1023 	if (!fw_has_api(&mvm->fw->ucode_capa,
1024 			IWL_UCODE_TLV_API_TKIP_MIC_KEYS)) {
1025 		int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TKIP_PARAM,
1026 						IWL_FW_CMD_VER_UNKNOWN);
1027 		struct wowlan_key_tkip_data tkip_data = {};
1028 		int size;
1029 
1030 		if (ver == 2) {
1031 			size = sizeof(tkip_data.tkip);
1032 			tkip_data.tkip.sta_id =
1033 				cpu_to_le32(mvmvif->deflink.ap_sta_id);
1034 		} else if (ver == 1 || ver == IWL_FW_CMD_VER_UNKNOWN) {
1035 			size = sizeof(struct iwl_wowlan_tkip_params_cmd_ver_1);
1036 		} else {
1037 			WARN_ON_ONCE(1);
1038 			return -EINVAL;
1039 		}
1040 
1041 		ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_get_tkip_data,
1042 				    &tkip_data);
1043 
1044 		if (tkip_data.have_tkip_keys) {
1045 			/* send relevant data according to CMD version */
1046 			ret = iwl_mvm_send_cmd_pdu(mvm,
1047 						   WOWLAN_TKIP_PARAM,
1048 						   CMD_ASYNC, size,
1049 						   &tkip_data.tkip);
1050 			if (ret)
1051 				return ret;
1052 		}
1053 	}
1054 
1055 	/* configure rekey data only if offloaded rekey is supported (d3) */
1056 	if (mvmvif->rekey_data.valid) {
1057 		struct iwl_wowlan_kek_kck_material_cmd_v4 kek_kck_cmd = {};
1058 		struct iwl_wowlan_kek_kck_material_cmd_v4 *_kek_kck_cmd =
1059 			&kek_kck_cmd;
1060 		struct wowlan_key_gtk_type_iter gtk_type_data = {
1061 			.kek_kck_cmd = _kek_kck_cmd,
1062 		};
1063 
1064 		cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,
1065 						WOWLAN_KEK_KCK_MATERIAL,
1066 						IWL_FW_CMD_VER_UNKNOWN);
1067 		if (WARN_ON(cmd_ver != 2 && cmd_ver != 3 && cmd_ver != 4 &&
1068 			    cmd_ver != IWL_FW_CMD_VER_UNKNOWN))
1069 			return -EINVAL;
1070 
1071 		ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_gtk_type_iter,
1072 				    &gtk_type_data);
1073 
1074 		memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck,
1075 		       mvmvif->rekey_data.kck_len);
1076 		kek_kck_cmd.kck_len = cpu_to_le16(mvmvif->rekey_data.kck_len);
1077 		memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek,
1078 		       mvmvif->rekey_data.kek_len);
1079 		kek_kck_cmd.kek_len = cpu_to_le16(mvmvif->rekey_data.kek_len);
1080 		kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr;
1081 		kek_kck_cmd.akm = cpu_to_le32(mvmvif->rekey_data.akm);
1082 		kek_kck_cmd.sta_id = cpu_to_le32(mvmvif->deflink.ap_sta_id);
1083 
1084 		if (cmd_ver == 4) {
1085 			cmd_size = sizeof(struct iwl_wowlan_kek_kck_material_cmd_v4);
1086 		} else {
1087 			if (cmd_ver == 3)
1088 				cmd_size =
1089 					sizeof(struct iwl_wowlan_kek_kck_material_cmd_v3);
1090 			else
1091 				cmd_size =
1092 					sizeof(struct iwl_wowlan_kek_kck_material_cmd_v2);
1093 			/* skip the sta_id at the beginning */
1094 			_kek_kck_cmd = (void *)
1095 				((u8 *)_kek_kck_cmd + sizeof(kek_kck_cmd.sta_id));
1096 		}
1097 
1098 		IWL_DEBUG_WOWLAN(mvm, "setting akm %d\n",
1099 				 mvmvif->rekey_data.akm);
1100 
1101 		ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_KEK_KCK_MATERIAL,
1102 					   CMD_ASYNC, cmd_size, _kek_kck_cmd);
1103 		if (ret)
1104 			return ret;
1105 	}
1106 
1107 	return 0;
1108 }
1109 
1110 static int
1111 iwl_mvm_wowlan_config(struct iwl_mvm *mvm,
1112 		      struct cfg80211_wowlan *wowlan,
1113 		      struct iwl_wowlan_config_cmd *wowlan_config_cmd,
1114 		      struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
1115 		      struct ieee80211_sta *ap_sta)
1116 {
1117 	int ret;
1118 	bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1119 					 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1120 
1121 	mvm->offload_tid = wowlan_config_cmd->offloading_tid;
1122 
1123 	if (!unified_image) {
1124 		ret = iwl_mvm_switch_to_d3(mvm);
1125 		if (ret)
1126 			return ret;
1127 
1128 		ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta);
1129 		if (ret)
1130 			return ret;
1131 	}
1132 
1133 	/*
1134 	 * This needs to be unlocked due to lock ordering
1135 	 * constraints. Since we're in the suspend path
1136 	 * that isn't really a problem though.
1137 	 */
1138 	mutex_unlock(&mvm->mutex);
1139 	ret = iwl_mvm_wowlan_config_key_params(mvm, vif);
1140 	mutex_lock(&mvm->mutex);
1141 	if (ret)
1142 		return ret;
1143 
1144 	ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0,
1145 				   sizeof(*wowlan_config_cmd),
1146 				   wowlan_config_cmd);
1147 	if (ret)
1148 		return ret;
1149 
1150 	if (fw_has_api(&mvm->fw->ucode_capa,
1151 		       IWL_UCODE_TLV_API_WOWLAN_TCP_SYN_WAKE))
1152 		ret = iwl_mvm_send_patterns(mvm, vif, wowlan);
1153 	else
1154 		ret = iwl_mvm_send_patterns_v1(mvm, wowlan);
1155 	if (ret)
1156 		return ret;
1157 
1158 	return iwl_mvm_send_proto_offload(mvm, vif, false, true, 0);
1159 }
1160 
1161 static int
1162 iwl_mvm_netdetect_config(struct iwl_mvm *mvm,
1163 			 struct cfg80211_wowlan *wowlan,
1164 			 struct cfg80211_sched_scan_request *nd_config,
1165 			 struct ieee80211_vif *vif)
1166 {
1167 	int ret;
1168 	bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1169 					 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1170 
1171 	if (!unified_image) {
1172 		ret = iwl_mvm_switch_to_d3(mvm);
1173 		if (ret)
1174 			return ret;
1175 	} else {
1176 		/* In theory, we wouldn't have to stop a running sched
1177 		 * scan in order to start another one (for
1178 		 * net-detect).  But in practice this doesn't seem to
1179 		 * work properly, so stop any running sched_scan now.
1180 		 */
1181 		ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
1182 		if (ret)
1183 			return ret;
1184 	}
1185 
1186 	ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies,
1187 				       IWL_MVM_SCAN_NETDETECT);
1188 	if (ret)
1189 		return ret;
1190 
1191 	if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels))
1192 		return -EBUSY;
1193 
1194 	/* save the sched scan matchsets... */
1195 	if (nd_config->n_match_sets) {
1196 		mvm->nd_match_sets = kmemdup(nd_config->match_sets,
1197 					     sizeof(*nd_config->match_sets) *
1198 					     nd_config->n_match_sets,
1199 					     GFP_KERNEL);
1200 		if (mvm->nd_match_sets)
1201 			mvm->n_nd_match_sets = nd_config->n_match_sets;
1202 	}
1203 
1204 	/* ...and the sched scan channels for later reporting */
1205 	mvm->nd_channels = kmemdup(nd_config->channels,
1206 				   sizeof(*nd_config->channels) *
1207 				   nd_config->n_channels,
1208 				   GFP_KERNEL);
1209 	if (mvm->nd_channels)
1210 		mvm->n_nd_channels = nd_config->n_channels;
1211 
1212 	return 0;
1213 }
1214 
1215 static void iwl_mvm_free_nd(struct iwl_mvm *mvm)
1216 {
1217 	kfree(mvm->nd_match_sets);
1218 	mvm->nd_match_sets = NULL;
1219 	mvm->n_nd_match_sets = 0;
1220 	kfree(mvm->nd_channels);
1221 	mvm->nd_channels = NULL;
1222 	mvm->n_nd_channels = 0;
1223 }
1224 
1225 static int __iwl_mvm_suspend(struct ieee80211_hw *hw,
1226 			     struct cfg80211_wowlan *wowlan,
1227 			     bool test)
1228 {
1229 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1230 	struct ieee80211_vif *vif = NULL;
1231 	struct iwl_mvm_vif *mvmvif = NULL;
1232 	struct ieee80211_sta *ap_sta = NULL;
1233 	struct iwl_d3_manager_config d3_cfg_cmd_data = {
1234 		/*
1235 		 * Program the minimum sleep time to 10 seconds, as many
1236 		 * platforms have issues processing a wakeup signal while
1237 		 * still being in the process of suspending.
1238 		 */
1239 		.min_sleep_time = cpu_to_le32(10 * 1000 * 1000),
1240 	};
1241 	struct iwl_host_cmd d3_cfg_cmd = {
1242 		.id = D3_CONFIG_CMD,
1243 		.flags = CMD_WANT_SKB | CMD_SEND_IN_D3,
1244 		.data[0] = &d3_cfg_cmd_data,
1245 		.len[0] = sizeof(d3_cfg_cmd_data),
1246 	};
1247 	int ret;
1248 	int len __maybe_unused;
1249 	bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1250 					 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1251 
1252 	if (!wowlan) {
1253 		/*
1254 		 * mac80211 shouldn't get here, but for D3 test
1255 		 * it doesn't warrant a warning
1256 		 */
1257 		WARN_ON(!test);
1258 		return -EINVAL;
1259 	}
1260 
1261 	mutex_lock(&mvm->mutex);
1262 
1263 	set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
1264 
1265 	synchronize_net();
1266 
1267 	vif = iwl_mvm_get_bss_vif(mvm);
1268 	if (IS_ERR_OR_NULL(vif)) {
1269 		ret = 1;
1270 		goto out_noreset;
1271 	}
1272 
1273 	mvmvif = iwl_mvm_vif_from_mac80211(vif);
1274 
1275 	if (mvmvif->deflink.ap_sta_id == IWL_MVM_INVALID_STA) {
1276 		/* if we're not associated, this must be netdetect */
1277 		if (!wowlan->nd_config) {
1278 			ret = 1;
1279 			goto out_noreset;
1280 		}
1281 
1282 		ret = iwl_mvm_netdetect_config(
1283 			mvm, wowlan, wowlan->nd_config, vif);
1284 		if (ret)
1285 			goto out;
1286 
1287 		mvm->net_detect = true;
1288 	} else {
1289 		struct iwl_wowlan_config_cmd wowlan_config_cmd = {};
1290 
1291 		wowlan_config_cmd.sta_id = mvmvif->deflink.ap_sta_id;
1292 
1293 		ap_sta = rcu_dereference_protected(
1294 			mvm->fw_id_to_mac_id[mvmvif->deflink.ap_sta_id],
1295 			lockdep_is_held(&mvm->mutex));
1296 		if (IS_ERR_OR_NULL(ap_sta)) {
1297 			ret = -EINVAL;
1298 			goto out_noreset;
1299 		}
1300 
1301 		ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1302 						vif, mvmvif, ap_sta);
1303 		if (ret)
1304 			goto out_noreset;
1305 		ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1306 					    vif, mvmvif, ap_sta);
1307 		if (ret)
1308 			goto out;
1309 
1310 		mvm->net_detect = false;
1311 	}
1312 
1313 	ret = iwl_mvm_power_update_device(mvm);
1314 	if (ret)
1315 		goto out;
1316 
1317 	ret = iwl_mvm_power_update_mac(mvm);
1318 	if (ret)
1319 		goto out;
1320 
1321 #ifdef CONFIG_IWLWIFI_DEBUGFS
1322 	if (mvm->d3_wake_sysassert)
1323 		d3_cfg_cmd_data.wakeup_flags |=
1324 			cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR);
1325 #endif
1326 
1327 	/*
1328 	 * Prior to 9000 device family the driver needs to stop the dbg
1329 	 * recording before entering D3. In later devices the FW stops the
1330 	 * recording automatically.
1331 	 */
1332 	if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_9000)
1333 		iwl_fw_dbg_stop_restart_recording(&mvm->fwrt, NULL, true);
1334 
1335 	mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_D3;
1336 
1337 	/* must be last -- this switches firmware state */
1338 	ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd);
1339 	if (ret)
1340 		goto out;
1341 #ifdef CONFIG_IWLWIFI_DEBUGFS
1342 	len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt);
1343 	if (len >= sizeof(u32)) {
1344 		mvm->d3_test_pme_ptr =
1345 			le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data);
1346 	}
1347 #endif
1348 	iwl_free_resp(&d3_cfg_cmd);
1349 
1350 	clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1351 
1352 	ret = iwl_trans_d3_suspend(mvm->trans, test, !unified_image);
1353  out:
1354 	if (ret < 0) {
1355 		iwl_mvm_free_nd(mvm);
1356 
1357 		if (!unified_image) {
1358 			if (mvm->fw_restart > 0) {
1359 				mvm->fw_restart--;
1360 				ieee80211_restart_hw(mvm->hw);
1361 			}
1362 		}
1363 
1364 		clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
1365 	}
1366  out_noreset:
1367 	mutex_unlock(&mvm->mutex);
1368 
1369 	return ret;
1370 }
1371 
1372 int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
1373 {
1374 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1375 
1376 	iwl_mvm_pause_tcm(mvm, true);
1377 
1378 	iwl_fw_runtime_suspend(&mvm->fwrt);
1379 
1380 	return __iwl_mvm_suspend(hw, wowlan, false);
1381 }
1382 
1383 struct iwl_multicast_key_data {
1384 	u8 key[WOWLAN_KEY_MAX_SIZE];
1385 	u8 len;
1386 	u8 flags;
1387 	u8 id;
1388 	u8 ipn[6];
1389 };
1390 
1391 /* converted data from the different status responses */
1392 struct iwl_wowlan_status_data {
1393 	u64 replay_ctr;
1394 	u32 num_of_gtk_rekeys;
1395 	u32 received_beacons;
1396 	u32 wakeup_reasons;
1397 	u32 wake_packet_length;
1398 	u32 wake_packet_bufsize;
1399 	u16 pattern_number;
1400 	u16 non_qos_seq_ctr;
1401 	u16 qos_seq_ctr[8];
1402 	u8 tid_tear_down;
1403 
1404 	struct {
1405 		/* including RX MIC key for TKIP */
1406 		u8 key[WOWLAN_KEY_MAX_SIZE];
1407 		u8 len;
1408 		u8 flags;
1409 		u8 id;
1410 	} gtk[WOWLAN_GTK_KEYS_NUM];
1411 
1412 	struct {
1413 		/*
1414 		 * We store both the TKIP and AES representations
1415 		 * coming from the firmware because we decode the
1416 		 * data from there before we iterate the keys and
1417 		 * know which one we need.
1418 		 */
1419 		struct {
1420 			struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT];
1421 		} tkip, aes;
1422 
1423 		/*
1424 		 * We use -1 for when we have valid data but don't know
1425 		 * the key ID from firmware, and thus it needs to be
1426 		 * installed with the last key (depending on rekeying).
1427 		 */
1428 		s8 key_id;
1429 		bool valid;
1430 	} gtk_seq[2];
1431 
1432 	struct {
1433 		/* Same as above */
1434 		struct {
1435 			struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT];
1436 			u64 tx_pn;
1437 		} tkip, aes;
1438 	} ptk;
1439 
1440 	struct iwl_multicast_key_data igtk;
1441 	struct iwl_multicast_key_data bigtk[WOWLAN_BIGTK_KEYS_NUM];
1442 
1443 	u8 *wake_packet;
1444 };
1445 
1446 static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm,
1447 					  struct ieee80211_vif *vif,
1448 					  struct iwl_wowlan_status_data *status)
1449 {
1450 	struct sk_buff *pkt = NULL;
1451 	struct cfg80211_wowlan_wakeup wakeup = {
1452 		.pattern_idx = -1,
1453 	};
1454 	struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
1455 	u32 reasons = status->wakeup_reasons;
1456 
1457 	if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
1458 		wakeup_report = NULL;
1459 		goto report;
1460 	}
1461 
1462 	pm_wakeup_event(mvm->dev, 0);
1463 
1464 	if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET)
1465 		wakeup.magic_pkt = true;
1466 
1467 	if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN)
1468 		wakeup.pattern_idx =
1469 			status->pattern_number;
1470 
1471 	if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1472 		       IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH))
1473 		wakeup.disconnect = true;
1474 
1475 	if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)
1476 		wakeup.gtk_rekey_failure = true;
1477 
1478 	if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
1479 		wakeup.rfkill_release = true;
1480 
1481 	if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST)
1482 		wakeup.eap_identity_req = true;
1483 
1484 	if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE)
1485 		wakeup.four_way_handshake = true;
1486 
1487 	if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS)
1488 		wakeup.tcp_connlost = true;
1489 
1490 	if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE)
1491 		wakeup.tcp_nomoretokens = true;
1492 
1493 	if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET)
1494 		wakeup.tcp_match = true;
1495 
1496 	if (status->wake_packet) {
1497 		int pktsize = status->wake_packet_bufsize;
1498 		int pktlen = status->wake_packet_length;
1499 		const u8 *pktdata = status->wake_packet;
1500 		const struct ieee80211_hdr *hdr = (const void *)pktdata;
1501 		int truncated = pktlen - pktsize;
1502 
1503 		/* this would be a firmware bug */
1504 		if (WARN_ON_ONCE(truncated < 0))
1505 			truncated = 0;
1506 
1507 		if (ieee80211_is_data(hdr->frame_control)) {
1508 			int hdrlen = ieee80211_hdrlen(hdr->frame_control);
1509 			int ivlen = 0, icvlen = 4; /* also FCS */
1510 
1511 			pkt = alloc_skb(pktsize, GFP_KERNEL);
1512 			if (!pkt)
1513 				goto report;
1514 
1515 			skb_put_data(pkt, pktdata, hdrlen);
1516 			pktdata += hdrlen;
1517 			pktsize -= hdrlen;
1518 
1519 			if (ieee80211_has_protected(hdr->frame_control)) {
1520 				/*
1521 				 * This is unlocked and using gtk_i(c)vlen,
1522 				 * but since everything is under RTNL still
1523 				 * that's not really a problem - changing
1524 				 * it would be difficult.
1525 				 */
1526 				if (is_multicast_ether_addr(hdr->addr1)) {
1527 					ivlen = mvm->gtk_ivlen;
1528 					icvlen += mvm->gtk_icvlen;
1529 				} else {
1530 					ivlen = mvm->ptk_ivlen;
1531 					icvlen += mvm->ptk_icvlen;
1532 				}
1533 			}
1534 
1535 			/* if truncated, FCS/ICV is (partially) gone */
1536 			if (truncated >= icvlen) {
1537 				icvlen = 0;
1538 				truncated -= icvlen;
1539 			} else {
1540 				icvlen -= truncated;
1541 				truncated = 0;
1542 			}
1543 
1544 			pktsize -= ivlen + icvlen;
1545 			pktdata += ivlen;
1546 
1547 			skb_put_data(pkt, pktdata, pktsize);
1548 
1549 			if (ieee80211_data_to_8023(pkt, vif->addr, vif->type))
1550 				goto report;
1551 			wakeup.packet = pkt->data;
1552 			wakeup.packet_present_len = pkt->len;
1553 			wakeup.packet_len = pkt->len - truncated;
1554 			wakeup.packet_80211 = false;
1555 		} else {
1556 			int fcslen = 4;
1557 
1558 			if (truncated >= 4) {
1559 				truncated -= 4;
1560 				fcslen = 0;
1561 			} else {
1562 				fcslen -= truncated;
1563 				truncated = 0;
1564 			}
1565 			pktsize -= fcslen;
1566 			wakeup.packet = status->wake_packet;
1567 			wakeup.packet_present_len = pktsize;
1568 			wakeup.packet_len = pktlen - truncated;
1569 			wakeup.packet_80211 = true;
1570 		}
1571 	}
1572 
1573  report:
1574 	ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
1575 	kfree_skb(pkt);
1576 }
1577 
1578 static void iwl_mvm_le64_to_aes_seq(__le64 le_pn, struct ieee80211_key_seq *seq)
1579 {
1580 	u64 pn = le64_to_cpu(le_pn);
1581 
1582 	seq->ccmp.pn[0] = pn >> 40;
1583 	seq->ccmp.pn[1] = pn >> 32;
1584 	seq->ccmp.pn[2] = pn >> 24;
1585 	seq->ccmp.pn[3] = pn >> 16;
1586 	seq->ccmp.pn[4] = pn >> 8;
1587 	seq->ccmp.pn[5] = pn;
1588 }
1589 
1590 static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc,
1591 				  struct ieee80211_key_seq *seq)
1592 {
1593 	iwl_mvm_le64_to_aes_seq(sc->pn, seq);
1594 }
1595 
1596 static void iwl_mvm_le64_to_tkip_seq(__le64 le_pn, struct ieee80211_key_seq *seq)
1597 {
1598 	u64 pn = le64_to_cpu(le_pn);
1599 
1600 	seq->tkip.iv16 = (u16)pn;
1601 	seq->tkip.iv32 = (u32)(pn >> 16);
1602 }
1603 
1604 static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc,
1605 				   struct ieee80211_key_seq *seq)
1606 {
1607 	seq->tkip.iv32 = le32_to_cpu(sc->iv32);
1608 	seq->tkip.iv16 = le16_to_cpu(sc->iv16);
1609 }
1610 
1611 static void iwl_mvm_set_key_rx_seq_tids(struct ieee80211_key_conf *key,
1612 					struct ieee80211_key_seq *seq)
1613 {
1614 	int tid;
1615 
1616 	for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++)
1617 		ieee80211_set_key_rx_seq(key, tid, &seq[tid]);
1618 }
1619 
1620 static void iwl_mvm_set_aes_ptk_rx_seq(struct iwl_mvm *mvm,
1621 				       struct iwl_wowlan_status_data *status,
1622 				       struct ieee80211_sta *sta,
1623 				       struct ieee80211_key_conf *key)
1624 {
1625 	struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1626 	struct iwl_mvm_key_pn *ptk_pn;
1627 	int tid;
1628 
1629 	iwl_mvm_set_key_rx_seq_tids(key, status->ptk.aes.seq);
1630 
1631 	if (!iwl_mvm_has_new_rx_api(mvm))
1632 		return;
1633 
1634 
1635 	rcu_read_lock();
1636 	ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]);
1637 	if (WARN_ON(!ptk_pn)) {
1638 		rcu_read_unlock();
1639 		return;
1640 	}
1641 
1642 	for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1643 		int i;
1644 
1645 		for (i = 1; i < mvm->trans->num_rx_queues; i++)
1646 			memcpy(ptk_pn->q[i].pn[tid],
1647 			       status->ptk.aes.seq[tid].ccmp.pn,
1648 			       IEEE80211_CCMP_PN_LEN);
1649 	}
1650 	rcu_read_unlock();
1651 }
1652 
1653 static void iwl_mvm_convert_key_counters(struct iwl_wowlan_status_data *status,
1654 					 union iwl_all_tsc_rsc *sc)
1655 {
1656 	int i;
1657 
1658 	BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT);
1659 	BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC);
1660 
1661 	/* GTK RX counters */
1662 	for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1663 		iwl_mvm_tkip_sc_to_seq(&sc->tkip.multicast_rsc[i],
1664 				       &status->gtk_seq[0].tkip.seq[i]);
1665 		iwl_mvm_aes_sc_to_seq(&sc->aes.multicast_rsc[i],
1666 				      &status->gtk_seq[0].aes.seq[i]);
1667 	}
1668 	status->gtk_seq[0].valid = true;
1669 	status->gtk_seq[0].key_id = -1;
1670 
1671 	/* PTK TX counter */
1672 	status->ptk.tkip.tx_pn = (u64)le16_to_cpu(sc->tkip.tsc.iv16) |
1673 				 ((u64)le32_to_cpu(sc->tkip.tsc.iv32) << 16);
1674 	status->ptk.aes.tx_pn = le64_to_cpu(sc->aes.tsc.pn);
1675 
1676 	/* PTK RX counters */
1677 	for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1678 		iwl_mvm_tkip_sc_to_seq(&sc->tkip.unicast_rsc[i],
1679 				       &status->ptk.tkip.seq[i]);
1680 		iwl_mvm_aes_sc_to_seq(&sc->aes.unicast_rsc[i],
1681 				      &status->ptk.aes.seq[i]);
1682 	}
1683 }
1684 
1685 static void
1686 iwl_mvm_convert_key_counters_v5_gtk_seq(struct iwl_wowlan_status_data *status,
1687 					struct iwl_wowlan_all_rsc_tsc_v5 *sc,
1688 					unsigned int idx, unsigned int key_id)
1689 {
1690 	int tid;
1691 
1692 	for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1693 		iwl_mvm_le64_to_tkip_seq(sc->mcast_rsc[idx][tid],
1694 					 &status->gtk_seq[idx].tkip.seq[tid]);
1695 		iwl_mvm_le64_to_aes_seq(sc->mcast_rsc[idx][tid],
1696 					&status->gtk_seq[idx].aes.seq[tid]);
1697 	}
1698 
1699 	status->gtk_seq[idx].valid = true;
1700 	status->gtk_seq[idx].key_id = key_id;
1701 }
1702 
1703 static void
1704 iwl_mvm_convert_key_counters_v5(struct iwl_wowlan_status_data *status,
1705 				struct iwl_wowlan_all_rsc_tsc_v5 *sc)
1706 {
1707 	int i, tid;
1708 
1709 	BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT);
1710 	BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC);
1711 	BUILD_BUG_ON(ARRAY_SIZE(sc->mcast_rsc) != ARRAY_SIZE(status->gtk_seq));
1712 
1713 	/* GTK RX counters */
1714 	for (i = 0; i < ARRAY_SIZE(sc->mcast_key_id_map); i++) {
1715 		u8 entry = sc->mcast_key_id_map[i];
1716 
1717 		if (entry < ARRAY_SIZE(sc->mcast_rsc))
1718 			iwl_mvm_convert_key_counters_v5_gtk_seq(status, sc,
1719 								entry, i);
1720 	}
1721 
1722 	/* PTK TX counters not needed, assigned in device */
1723 
1724 	/* PTK RX counters */
1725 	for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1726 		iwl_mvm_le64_to_tkip_seq(sc->ucast_rsc[tid],
1727 					 &status->ptk.tkip.seq[tid]);
1728 		iwl_mvm_le64_to_aes_seq(sc->ucast_rsc[tid],
1729 					&status->ptk.aes.seq[tid]);
1730 	}
1731 }
1732 
1733 static void iwl_mvm_set_key_rx_seq_idx(struct ieee80211_key_conf *key,
1734 				       struct iwl_wowlan_status_data *status,
1735 				       int idx)
1736 {
1737 	switch (key->cipher) {
1738 	case WLAN_CIPHER_SUITE_CCMP:
1739 	case WLAN_CIPHER_SUITE_GCMP:
1740 	case WLAN_CIPHER_SUITE_GCMP_256:
1741 		iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].aes.seq);
1742 		break;
1743 	case WLAN_CIPHER_SUITE_TKIP:
1744 		iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].tkip.seq);
1745 		break;
1746 	default:
1747 		WARN_ON(1);
1748 	}
1749 }
1750 
1751 static void iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf *key,
1752 				   struct iwl_wowlan_status_data *status,
1753 				   bool installed)
1754 {
1755 	int i;
1756 
1757 	for (i = 0; i < ARRAY_SIZE(status->gtk_seq); i++) {
1758 		if (!status->gtk_seq[i].valid)
1759 			continue;
1760 
1761 		/* Handle the case where we know the key ID */
1762 		if (status->gtk_seq[i].key_id == key->keyidx) {
1763 			s8 new_key_id = -1;
1764 
1765 			if (status->num_of_gtk_rekeys)
1766 				new_key_id = status->gtk[0].flags &
1767 						IWL_WOWLAN_GTK_IDX_MASK;
1768 
1769 			/* Don't install a new key's value to an old key */
1770 			if (new_key_id != key->keyidx)
1771 				iwl_mvm_set_key_rx_seq_idx(key, status, i);
1772 			continue;
1773 		}
1774 
1775 		/* handle the case where we didn't, last key only */
1776 		if (status->gtk_seq[i].key_id == -1 &&
1777 		    (!status->num_of_gtk_rekeys || installed))
1778 			iwl_mvm_set_key_rx_seq_idx(key, status, i);
1779 	}
1780 }
1781 
1782 struct iwl_mvm_d3_gtk_iter_data {
1783 	struct iwl_mvm *mvm;
1784 	struct iwl_wowlan_status_data *status;
1785 	u32 gtk_cipher, igtk_cipher, bigtk_cipher;
1786 	bool unhandled_cipher, igtk_support, bigtk_support;
1787 	int num_keys;
1788 };
1789 
1790 static void iwl_mvm_d3_find_last_keys(struct ieee80211_hw *hw,
1791 				      struct ieee80211_vif *vif,
1792 				      struct ieee80211_sta *sta,
1793 				      struct ieee80211_key_conf *key,
1794 				      void *_data)
1795 {
1796 	struct iwl_mvm_d3_gtk_iter_data *data = _data;
1797 
1798 	if (data->unhandled_cipher)
1799 		return;
1800 
1801 	switch (key->cipher) {
1802 	case WLAN_CIPHER_SUITE_WEP40:
1803 	case WLAN_CIPHER_SUITE_WEP104:
1804 		/* ignore WEP completely, nothing to do */
1805 		return;
1806 	case WLAN_CIPHER_SUITE_CCMP:
1807 	case WLAN_CIPHER_SUITE_GCMP:
1808 	case WLAN_CIPHER_SUITE_GCMP_256:
1809 	case WLAN_CIPHER_SUITE_TKIP:
1810 		/* we support these */
1811 		data->gtk_cipher = key->cipher;
1812 		break;
1813 	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
1814 	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
1815 	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
1816 	case WLAN_CIPHER_SUITE_AES_CMAC:
1817 		/* we support these */
1818 		if (data->igtk_support &&
1819 		    (key->keyidx == 4 || key->keyidx == 5)) {
1820 			data->igtk_cipher = key->cipher;
1821 		} else if (data->bigtk_support &&
1822 			   (key->keyidx == 6 || key->keyidx == 7)) {
1823 			data->bigtk_cipher = key->cipher;
1824 		} else {
1825 			data->unhandled_cipher = true;
1826 			return;
1827 		}
1828 		break;
1829 	default:
1830 		/* everything else - disconnect from AP */
1831 		data->unhandled_cipher = true;
1832 		return;
1833 	}
1834 
1835 	data->num_keys++;
1836 }
1837 
1838 static void
1839 iwl_mvm_d3_set_igtk_bigtk_ipn(const struct iwl_multicast_key_data *key,
1840 			      struct ieee80211_key_seq *seq, u32 cipher)
1841 {
1842 	switch (cipher) {
1843 	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
1844 	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
1845 		BUILD_BUG_ON(sizeof(seq->aes_gmac.pn) != sizeof(key->ipn));
1846 		memcpy(seq->aes_gmac.pn, key->ipn, sizeof(seq->aes_gmac.pn));
1847 		break;
1848 	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
1849 		BUILD_BUG_ON(sizeof(seq->aes_cmac.pn) != sizeof(key->ipn));
1850 		memcpy(seq->aes_cmac.pn, key->ipn, sizeof(seq->aes_cmac.pn));
1851 		break;
1852 	}
1853 }
1854 
1855 static void
1856 iwl_mvm_d3_update_igtk_bigtk(struct iwl_wowlan_status_data *status,
1857 			     struct ieee80211_key_conf *key,
1858 			     struct iwl_multicast_key_data *key_data)
1859 {
1860 	if (status->num_of_gtk_rekeys && key_data->len) {
1861 		/* remove rekeyed key */
1862 		ieee80211_remove_key(key);
1863 	} else {
1864 		struct ieee80211_key_seq seq;
1865 
1866 		iwl_mvm_d3_set_igtk_bigtk_ipn(key_data,
1867 					      &seq,
1868 					      key->cipher);
1869 		ieee80211_set_key_rx_seq(key, 0, &seq);
1870 	}
1871 }
1872 
1873 static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw,
1874 				   struct ieee80211_vif *vif,
1875 				   struct ieee80211_sta *sta,
1876 				   struct ieee80211_key_conf *key,
1877 				   void *_data)
1878 {
1879 	struct iwl_mvm_d3_gtk_iter_data *data = _data;
1880 	struct iwl_wowlan_status_data *status = data->status;
1881 	s8 keyidx;
1882 
1883 	if (data->unhandled_cipher)
1884 		return;
1885 
1886 	switch (key->cipher) {
1887 	case WLAN_CIPHER_SUITE_WEP40:
1888 	case WLAN_CIPHER_SUITE_WEP104:
1889 		/* ignore WEP completely, nothing to do */
1890 		return;
1891 	case WLAN_CIPHER_SUITE_CCMP:
1892 	case WLAN_CIPHER_SUITE_GCMP:
1893 	case WLAN_CIPHER_SUITE_GCMP_256:
1894 		if (sta) {
1895 			atomic64_set(&key->tx_pn, status->ptk.aes.tx_pn);
1896 			iwl_mvm_set_aes_ptk_rx_seq(data->mvm, status, sta, key);
1897 			return;
1898 		}
1899 		fallthrough;
1900 	case WLAN_CIPHER_SUITE_TKIP:
1901 		if (sta) {
1902 			atomic64_set(&key->tx_pn, status->ptk.tkip.tx_pn);
1903 			iwl_mvm_set_key_rx_seq_tids(key, status->ptk.tkip.seq);
1904 			return;
1905 		}
1906 		keyidx = key->keyidx;
1907 		/* The current key is always sent by the FW, even if it wasn't
1908 		 * rekeyed during D3.
1909 		 * We remove an existing key if it has the same index as
1910 		 * a new key
1911 		 */
1912 		if (status->num_of_gtk_rekeys &&
1913 		    ((status->gtk[0].len && keyidx == status->gtk[0].id) ||
1914 		     (status->gtk[1].len && keyidx == status->gtk[1].id))) {
1915 			ieee80211_remove_key(key);
1916 		} else {
1917 			iwl_mvm_set_key_rx_seq(key, data->status, false);
1918 		}
1919 		break;
1920 	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
1921 	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
1922 	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
1923 	case WLAN_CIPHER_SUITE_AES_CMAC:
1924 		if (key->keyidx == 4 || key->keyidx == 5) {
1925 			iwl_mvm_d3_update_igtk_bigtk(status, key,
1926 						     &status->igtk);
1927 		}
1928 		if (key->keyidx == 6 || key->keyidx == 7) {
1929 			u8 idx = key->keyidx == status->bigtk[1].id;
1930 
1931 			iwl_mvm_d3_update_igtk_bigtk(status, key,
1932 						     &status->bigtk[idx]);
1933 		}
1934 	}
1935 }
1936 
1937 static bool iwl_mvm_gtk_rekey(struct iwl_wowlan_status_data *status,
1938 			      struct ieee80211_vif *vif,
1939 			      struct iwl_mvm *mvm, u32 gtk_cipher)
1940 {
1941 	int i;
1942 	struct ieee80211_key_conf *key;
1943 	struct {
1944 		struct ieee80211_key_conf conf;
1945 		u8 key[32];
1946 	} conf = {
1947 		.conf.cipher = gtk_cipher,
1948 	};
1949 
1950 	BUILD_BUG_ON(WLAN_KEY_LEN_CCMP != WLAN_KEY_LEN_GCMP);
1951 	BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_CCMP);
1952 	BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_GCMP_256);
1953 	BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_TKIP);
1954 	BUILD_BUG_ON(sizeof(conf.key) < sizeof(status->gtk[0].key));
1955 
1956 	switch (gtk_cipher) {
1957 	case WLAN_CIPHER_SUITE_CCMP:
1958 	case WLAN_CIPHER_SUITE_GCMP:
1959 		conf.conf.keylen = WLAN_KEY_LEN_CCMP;
1960 		break;
1961 	case WLAN_CIPHER_SUITE_GCMP_256:
1962 		conf.conf.keylen = WLAN_KEY_LEN_GCMP_256;
1963 		break;
1964 	case WLAN_CIPHER_SUITE_TKIP:
1965 		conf.conf.keylen = WLAN_KEY_LEN_TKIP;
1966 		break;
1967 	default:
1968 		WARN_ON(1);
1969 	}
1970 
1971 	for (i = 0; i < ARRAY_SIZE(status->gtk); i++) {
1972 		if (!status->gtk[i].len)
1973 			continue;
1974 
1975 		conf.conf.keyidx = status->gtk[i].id;
1976 		IWL_DEBUG_WOWLAN(mvm,
1977 				 "Received from FW GTK cipher %d, key index %d\n",
1978 				 conf.conf.cipher, conf.conf.keyidx);
1979 		memcpy(conf.conf.key, status->gtk[i].key,
1980 		       sizeof(status->gtk[i].key));
1981 
1982 		key = ieee80211_gtk_rekey_add(vif, &conf.conf);
1983 		if (IS_ERR(key))
1984 			return false;
1985 		iwl_mvm_set_key_rx_seq_idx(key, status, i);
1986 	}
1987 
1988 	return true;
1989 }
1990 
1991 static bool
1992 iwl_mvm_d3_igtk_bigtk_rekey_add(struct iwl_wowlan_status_data *status,
1993 				struct ieee80211_vif *vif, u32 cipher,
1994 				struct iwl_multicast_key_data *key_data)
1995 {
1996 	struct ieee80211_key_conf *key_config;
1997 	struct {
1998 		struct ieee80211_key_conf conf;
1999 		u8 key[WOWLAN_KEY_MAX_SIZE];
2000 	} conf = {
2001 		.conf.cipher = cipher,
2002 		.conf.keyidx = key_data->id,
2003 	};
2004 	struct ieee80211_key_seq seq;
2005 
2006 	if (!key_data->len)
2007 		return true;
2008 
2009 	iwl_mvm_d3_set_igtk_bigtk_ipn(key_data, &seq, conf.conf.cipher);
2010 
2011 	switch (cipher) {
2012 	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
2013 		conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_128;
2014 		break;
2015 	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
2016 		conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_256;
2017 		break;
2018 	case WLAN_CIPHER_SUITE_AES_CMAC:
2019 		conf.conf.keylen = WLAN_KEY_LEN_AES_CMAC;
2020 		break;
2021 	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
2022 		conf.conf.keylen = WLAN_KEY_LEN_BIP_CMAC_256;
2023 		break;
2024 	default:
2025 		WARN_ON(1);
2026 	}
2027 	BUILD_BUG_ON(sizeof(conf.key) < sizeof(key_data->key));
2028 	memcpy(conf.conf.key, key_data->key, conf.conf.keylen);
2029 
2030 	key_config = ieee80211_gtk_rekey_add(vif, &conf.conf);
2031 	if (IS_ERR(key_config))
2032 		return false;
2033 	ieee80211_set_key_rx_seq(key_config, 0, &seq);
2034 
2035 	if (key_config->keyidx == 4 || key_config->keyidx == 5) {
2036 		struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2037 		int link_id = vif->active_links ? __ffs(vif->active_links) : 0;
2038 		struct iwl_mvm_vif_link_info *mvm_link =
2039 			mvmvif->link[link_id];
2040 
2041 		mvm_link->igtk = key_config;
2042 	}
2043 
2044 	return true;
2045 }
2046 
2047 static int iwl_mvm_lookup_wowlan_status_ver(struct iwl_mvm *mvm)
2048 {
2049 	u8 notif_ver;
2050 
2051 	if (!fw_has_api(&mvm->fw->ucode_capa,
2052 			IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL))
2053 		return 6;
2054 
2055 	/* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */
2056 	notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP,
2057 					    WOWLAN_GET_STATUSES, 0);
2058 	if (!notif_ver)
2059 		notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
2060 						    WOWLAN_GET_STATUSES, 7);
2061 
2062 	return notif_ver;
2063 }
2064 
2065 static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm,
2066 					  struct ieee80211_vif *vif,
2067 					  struct iwl_wowlan_status_data *status)
2068 {
2069 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2070 	struct iwl_mvm_d3_gtk_iter_data gtkdata = {
2071 		.mvm = mvm,
2072 		.status = status,
2073 	};
2074 	int i;
2075 
2076 	u32 disconnection_reasons =
2077 		IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
2078 		IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH;
2079 
2080 	if (!status || !vif->bss_conf.bssid)
2081 		return false;
2082 
2083 	if (status->wakeup_reasons & disconnection_reasons)
2084 		return false;
2085 
2086 	if (iwl_mvm_lookup_wowlan_status_ver(mvm) > 6 ||
2087 	    iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
2088 				    WOWLAN_INFO_NOTIFICATION,
2089 				    0))
2090 		gtkdata.igtk_support = true;
2091 
2092 	if (iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
2093 				    WOWLAN_INFO_NOTIFICATION,
2094 				    0) >= 3)
2095 		gtkdata.bigtk_support = true;
2096 
2097 	/* find last GTK that we used initially, if any */
2098 	ieee80211_iter_keys(mvm->hw, vif,
2099 			    iwl_mvm_d3_find_last_keys, &gtkdata);
2100 	/* not trying to keep connections with MFP/unhandled ciphers */
2101 	if (gtkdata.unhandled_cipher)
2102 		return false;
2103 	if (!gtkdata.num_keys)
2104 		goto out;
2105 
2106 	/*
2107 	 * invalidate all other GTKs that might still exist and update
2108 	 * the one that we used
2109 	 */
2110 	ieee80211_iter_keys(mvm->hw, vif,
2111 			    iwl_mvm_d3_update_keys, &gtkdata);
2112 
2113 	if (status->num_of_gtk_rekeys) {
2114 		__be64 replay_ctr = cpu_to_be64(status->replay_ctr);
2115 
2116 		IWL_DEBUG_WOWLAN(mvm, "num of GTK rekeying %d\n",
2117 				 status->num_of_gtk_rekeys);
2118 
2119 		if (!iwl_mvm_gtk_rekey(status, vif, mvm, gtkdata.gtk_cipher))
2120 			return false;
2121 
2122 		if (!iwl_mvm_d3_igtk_bigtk_rekey_add(status, vif,
2123 						     gtkdata.igtk_cipher,
2124 						     &status->igtk))
2125 			return false;
2126 
2127 		for (i = 0; i < ARRAY_SIZE(status->bigtk); i++) {
2128 			if (!iwl_mvm_d3_igtk_bigtk_rekey_add(status, vif,
2129 							     gtkdata.bigtk_cipher,
2130 							     &status->bigtk[i]))
2131 				return false;
2132 		}
2133 
2134 		ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid,
2135 					   (void *)&replay_ctr, GFP_KERNEL);
2136 	}
2137 
2138 out:
2139 	if (iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP,
2140 				    WOWLAN_GET_STATUSES, 0) < 10) {
2141 		mvmvif->seqno_valid = true;
2142 		/* +0x10 because the set API expects next-to-use, not last-used */
2143 		mvmvif->seqno = status->non_qos_seq_ctr + 0x10;
2144 	}
2145 
2146 	return true;
2147 }
2148 
2149 static void iwl_mvm_convert_gtk_v2(struct iwl_wowlan_status_data *status,
2150 				   struct iwl_wowlan_gtk_status_v2 *data)
2151 {
2152 	BUILD_BUG_ON(sizeof(status->gtk[0].key) < sizeof(data->key));
2153 	BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY +
2154 		     sizeof(data->tkip_mic_key) >
2155 		     sizeof(status->gtk[0].key));
2156 
2157 	status->gtk[0].len = data->key_len;
2158 	status->gtk[0].flags = data->key_flags;
2159 
2160 	memcpy(status->gtk[0].key, data->key, sizeof(data->key));
2161 
2162 	/* if it's as long as the TKIP encryption key, copy MIC key */
2163 	if (status->gtk[0].len == NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY)
2164 		memcpy(status->gtk[0].key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
2165 		       data->tkip_mic_key, sizeof(data->tkip_mic_key));
2166 }
2167 
2168 static void iwl_mvm_convert_gtk_v3(struct iwl_wowlan_status_data *status,
2169 				   struct iwl_wowlan_gtk_status_v3 *data)
2170 {
2171 	int data_idx, status_idx = 0;
2172 
2173 	BUILD_BUG_ON(sizeof(status->gtk[0].key) < sizeof(data[0].key));
2174 	BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY +
2175 		     sizeof(data[0].tkip_mic_key) >
2176 		     sizeof(status->gtk[0].key));
2177 	BUILD_BUG_ON(ARRAY_SIZE(status->gtk) < WOWLAN_GTK_KEYS_NUM);
2178 	for (data_idx = 0; data_idx < ARRAY_SIZE(status->gtk); data_idx++) {
2179 		if (!(data[data_idx].key_len))
2180 			continue;
2181 		status->gtk[status_idx].len = data[data_idx].key_len;
2182 		status->gtk[status_idx].flags = data[data_idx].key_flags;
2183 		status->gtk[status_idx].id = status->gtk[status_idx].flags &
2184 				    IWL_WOWLAN_GTK_IDX_MASK;
2185 
2186 		memcpy(status->gtk[status_idx].key, data[data_idx].key,
2187 		       sizeof(data[data_idx].key));
2188 
2189 		/* if it's as long as the TKIP encryption key, copy MIC key */
2190 		if (status->gtk[status_idx].len ==
2191 		    NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY)
2192 			memcpy(status->gtk[status_idx].key +
2193 			       NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
2194 			       data[data_idx].tkip_mic_key,
2195 			       sizeof(data[data_idx].tkip_mic_key));
2196 		status_idx++;
2197 	}
2198 }
2199 
2200 static void iwl_mvm_convert_igtk(struct iwl_wowlan_status_data *status,
2201 				 struct iwl_wowlan_igtk_status *data)
2202 {
2203 	BUILD_BUG_ON(sizeof(status->igtk.key) < sizeof(data->key));
2204 
2205 	if (!data->key_len)
2206 		return;
2207 
2208 	status->igtk.len = data->key_len;
2209 	status->igtk.flags = data->key_flags;
2210 	status->igtk.id = u32_get_bits(data->key_flags,
2211 				       IWL_WOWLAN_IGTK_BIGTK_IDX_MASK)
2212 		+ WOWLAN_IGTK_MIN_INDEX;
2213 
2214 	memcpy(status->igtk.key, data->key, sizeof(data->key));
2215 	memcpy(status->igtk.ipn, data->ipn, sizeof(data->ipn));
2216 }
2217 
2218 static void iwl_mvm_convert_bigtk(struct iwl_wowlan_status_data *status,
2219 				  const struct iwl_wowlan_igtk_status *data)
2220 {
2221 	int data_idx, status_idx = 0;
2222 
2223 	BUILD_BUG_ON(ARRAY_SIZE(status->bigtk) < WOWLAN_BIGTK_KEYS_NUM);
2224 
2225 	for (data_idx = 0; data_idx < WOWLAN_BIGTK_KEYS_NUM; data_idx++) {
2226 		if (!data[data_idx].key_len)
2227 			continue;
2228 
2229 		status->bigtk[status_idx].len = data[data_idx].key_len;
2230 		status->bigtk[status_idx].flags = data[data_idx].key_flags;
2231 		status->bigtk[status_idx].id =
2232 			u32_get_bits(data[data_idx].key_flags,
2233 				     IWL_WOWLAN_IGTK_BIGTK_IDX_MASK)
2234 			+ WOWLAN_BIGTK_MIN_INDEX;
2235 
2236 		BUILD_BUG_ON(sizeof(status->bigtk[status_idx].key) <
2237 			     sizeof(data[data_idx].key));
2238 		BUILD_BUG_ON(sizeof(status->bigtk[status_idx].ipn) <
2239 			     sizeof(data[data_idx].ipn));
2240 
2241 		memcpy(status->bigtk[status_idx].key, data[data_idx].key,
2242 		       sizeof(data[data_idx].key));
2243 		memcpy(status->bigtk[status_idx].ipn, data[data_idx].ipn,
2244 		       sizeof(data[data_idx].ipn));
2245 		status_idx++;
2246 	}
2247 }
2248 
2249 static void iwl_mvm_parse_wowlan_info_notif(struct iwl_mvm *mvm,
2250 					    struct iwl_wowlan_info_notif *data,
2251 					    struct iwl_wowlan_status_data *status,
2252 					    u32 len)
2253 {
2254 	u32 i;
2255 
2256 	if (!data) {
2257 		IWL_ERR(mvm, "iwl_wowlan_info_notif data is NULL\n");
2258 		status = NULL;
2259 		return;
2260 	}
2261 
2262 	if (len < sizeof(*data)) {
2263 		IWL_ERR(mvm, "Invalid WoWLAN info notification!\n");
2264 		status = NULL;
2265 		return;
2266 	}
2267 
2268 	iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc);
2269 	iwl_mvm_convert_gtk_v3(status, data->gtk);
2270 	iwl_mvm_convert_igtk(status, &data->igtk[0]);
2271 	iwl_mvm_convert_bigtk(status, data->bigtk);
2272 	status->replay_ctr = le64_to_cpu(data->replay_ctr);
2273 	status->pattern_number = le16_to_cpu(data->pattern_number);
2274 	for (i = 0; i < IWL_MAX_TID_COUNT; i++)
2275 		status->qos_seq_ctr[i] =
2276 			le16_to_cpu(data->qos_seq_ctr[i]);
2277 	status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons);
2278 	status->num_of_gtk_rekeys =
2279 		le32_to_cpu(data->num_of_gtk_rekeys);
2280 	status->received_beacons = le32_to_cpu(data->received_beacons);
2281 	status->tid_tear_down = data->tid_tear_down;
2282 }
2283 
2284 static void
2285 iwl_mvm_parse_wowlan_info_notif_v2(struct iwl_mvm *mvm,
2286 				   struct iwl_wowlan_info_notif_v2 *data,
2287 				   struct iwl_wowlan_status_data *status,
2288 				   u32 len)
2289 {
2290 	u32 i;
2291 
2292 	if (!data) {
2293 		IWL_ERR(mvm, "iwl_wowlan_info_notif data is NULL\n");
2294 		status = NULL;
2295 		return;
2296 	}
2297 
2298 	if (len < sizeof(*data)) {
2299 		IWL_ERR(mvm, "Invalid WoWLAN info notification!\n");
2300 		status = NULL;
2301 		return;
2302 	}
2303 
2304 	iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc);
2305 	iwl_mvm_convert_gtk_v3(status, data->gtk);
2306 	iwl_mvm_convert_igtk(status, &data->igtk[0]);
2307 	status->replay_ctr = le64_to_cpu(data->replay_ctr);
2308 	status->pattern_number = le16_to_cpu(data->pattern_number);
2309 	for (i = 0; i < IWL_MAX_TID_COUNT; i++)
2310 		status->qos_seq_ctr[i] =
2311 			le16_to_cpu(data->qos_seq_ctr[i]);
2312 	status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons);
2313 	status->num_of_gtk_rekeys =
2314 		le32_to_cpu(data->num_of_gtk_rekeys);
2315 	status->received_beacons = le32_to_cpu(data->received_beacons);
2316 	status->tid_tear_down = data->tid_tear_down;
2317 }
2318 
2319 /* Occasionally, templates would be nice. This is one of those times ... */
2320 #define iwl_mvm_parse_wowlan_status_common(_ver)			\
2321 static struct iwl_wowlan_status_data *					\
2322 iwl_mvm_parse_wowlan_status_common_ ## _ver(struct iwl_mvm *mvm,	\
2323 					    struct iwl_wowlan_status_ ##_ver *data,\
2324 					    int len)			\
2325 {									\
2326 	struct iwl_wowlan_status_data *status;				\
2327 	int data_size, i;						\
2328 									\
2329 	if (len < sizeof(*data)) {					\
2330 		IWL_ERR(mvm, "Invalid WoWLAN status response!\n");	\
2331 		return NULL;						\
2332 	}								\
2333 									\
2334 	data_size = ALIGN(le32_to_cpu(data->wake_packet_bufsize), 4);	\
2335 	if (len != sizeof(*data) + data_size) {				\
2336 		IWL_ERR(mvm, "Invalid WoWLAN status response!\n");	\
2337 		return NULL;						\
2338 	}								\
2339 									\
2340 	status = kzalloc(sizeof(*status), GFP_KERNEL);			\
2341 	if (!status)							\
2342 		return NULL;						\
2343 									\
2344 	/* copy all the common fields */				\
2345 	status->replay_ctr = le64_to_cpu(data->replay_ctr);		\
2346 	status->pattern_number = le16_to_cpu(data->pattern_number);	\
2347 	status->non_qos_seq_ctr = le16_to_cpu(data->non_qos_seq_ctr);	\
2348 	for (i = 0; i < 8; i++)						\
2349 		status->qos_seq_ctr[i] =				\
2350 			le16_to_cpu(data->qos_seq_ctr[i]);		\
2351 	status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons);	\
2352 	status->num_of_gtk_rekeys =					\
2353 		le32_to_cpu(data->num_of_gtk_rekeys);			\
2354 	status->received_beacons = le32_to_cpu(data->received_beacons);	\
2355 	status->wake_packet_length =					\
2356 		le32_to_cpu(data->wake_packet_length);			\
2357 	status->wake_packet_bufsize =					\
2358 		le32_to_cpu(data->wake_packet_bufsize);			\
2359 	if (status->wake_packet_bufsize) {				\
2360 		status->wake_packet =					\
2361 			kmemdup(data->wake_packet,			\
2362 				status->wake_packet_bufsize,		\
2363 				GFP_KERNEL);				\
2364 		if (!status->wake_packet) {				\
2365 			kfree(status);					\
2366 			return NULL;					\
2367 		}							\
2368 	} else {							\
2369 		status->wake_packet = NULL;				\
2370 	}								\
2371 									\
2372 	return status;							\
2373 }
2374 
2375 iwl_mvm_parse_wowlan_status_common(v6)
2376 iwl_mvm_parse_wowlan_status_common(v7)
2377 iwl_mvm_parse_wowlan_status_common(v9)
2378 iwl_mvm_parse_wowlan_status_common(v12)
2379 
2380 static struct iwl_wowlan_status_data *
2381 iwl_mvm_send_wowlan_get_status(struct iwl_mvm *mvm, u8 sta_id)
2382 {
2383 	struct iwl_wowlan_status_data *status;
2384 	struct iwl_wowlan_get_status_cmd get_status_cmd = {
2385 		.sta_id = cpu_to_le32(sta_id),
2386 	};
2387 	struct iwl_host_cmd cmd = {
2388 		.id = WOWLAN_GET_STATUSES,
2389 		.flags = CMD_WANT_SKB,
2390 		.data = { &get_status_cmd, },
2391 		.len = { sizeof(get_status_cmd), },
2392 	};
2393 	int ret, len;
2394 	u8 notif_ver;
2395 	u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id,
2396 					   IWL_FW_CMD_VER_UNKNOWN);
2397 
2398 	if (cmd_ver == IWL_FW_CMD_VER_UNKNOWN)
2399 		cmd.len[0] = 0;
2400 
2401 	lockdep_assert_held(&mvm->mutex);
2402 
2403 	ret = iwl_mvm_send_cmd(mvm, &cmd);
2404 	if (ret) {
2405 		IWL_ERR(mvm, "failed to query wakeup status (%d)\n", ret);
2406 		return ERR_PTR(ret);
2407 	}
2408 
2409 	len = iwl_rx_packet_payload_len(cmd.resp_pkt);
2410 
2411 	/* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */
2412 	notif_ver = iwl_mvm_lookup_wowlan_status_ver(mvm);
2413 
2414 	if (notif_ver < 7) {
2415 		struct iwl_wowlan_status_v6 *v6 = (void *)cmd.resp_pkt->data;
2416 
2417 		status = iwl_mvm_parse_wowlan_status_common_v6(mvm, v6, len);
2418 		if (!status)
2419 			goto out_free_resp;
2420 
2421 		BUILD_BUG_ON(sizeof(v6->gtk.decrypt_key) >
2422 			     sizeof(status->gtk[0].key));
2423 		BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY +
2424 			     sizeof(v6->gtk.tkip_mic_key) >
2425 			     sizeof(status->gtk[0].key));
2426 
2427 		/* copy GTK info to the right place */
2428 		memcpy(status->gtk[0].key, v6->gtk.decrypt_key,
2429 		       sizeof(v6->gtk.decrypt_key));
2430 		memcpy(status->gtk[0].key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
2431 		       v6->gtk.tkip_mic_key,
2432 		       sizeof(v6->gtk.tkip_mic_key));
2433 
2434 		iwl_mvm_convert_key_counters(status, &v6->gtk.rsc.all_tsc_rsc);
2435 
2436 		/* hardcode the key length to 16 since v6 only supports 16 */
2437 		status->gtk[0].len = 16;
2438 
2439 		/*
2440 		 * The key index only uses 2 bits (values 0 to 3) and
2441 		 * we always set bit 7 which means this is the
2442 		 * currently used key.
2443 		 */
2444 		status->gtk[0].flags = v6->gtk.key_index | BIT(7);
2445 	} else if (notif_ver == 7) {
2446 		struct iwl_wowlan_status_v7 *v7 = (void *)cmd.resp_pkt->data;
2447 
2448 		status = iwl_mvm_parse_wowlan_status_common_v7(mvm, v7, len);
2449 		if (!status)
2450 			goto out_free_resp;
2451 
2452 		iwl_mvm_convert_key_counters(status, &v7->gtk[0].rsc.all_tsc_rsc);
2453 		iwl_mvm_convert_gtk_v2(status, &v7->gtk[0]);
2454 		iwl_mvm_convert_igtk(status, &v7->igtk[0]);
2455 	} else if (notif_ver == 9 || notif_ver == 10 || notif_ver == 11) {
2456 		struct iwl_wowlan_status_v9 *v9 = (void *)cmd.resp_pkt->data;
2457 
2458 		/* these three command versions have same layout and size, the
2459 		 * difference is only in a few not used (reserved) fields.
2460 		 */
2461 		status = iwl_mvm_parse_wowlan_status_common_v9(mvm, v9, len);
2462 		if (!status)
2463 			goto out_free_resp;
2464 
2465 		iwl_mvm_convert_key_counters(status, &v9->gtk[0].rsc.all_tsc_rsc);
2466 		iwl_mvm_convert_gtk_v2(status, &v9->gtk[0]);
2467 		iwl_mvm_convert_igtk(status, &v9->igtk[0]);
2468 
2469 		status->tid_tear_down = v9->tid_tear_down;
2470 	} else if (notif_ver == 12) {
2471 		struct iwl_wowlan_status_v12 *v12 = (void *)cmd.resp_pkt->data;
2472 
2473 		status = iwl_mvm_parse_wowlan_status_common_v12(mvm, v12, len);
2474 		if (!status)
2475 			goto out_free_resp;
2476 
2477 		iwl_mvm_convert_key_counters_v5(status, &v12->gtk[0].sc);
2478 		iwl_mvm_convert_gtk_v3(status, v12->gtk);
2479 		iwl_mvm_convert_igtk(status, &v12->igtk[0]);
2480 
2481 		status->tid_tear_down = v12->tid_tear_down;
2482 	} else {
2483 		IWL_ERR(mvm,
2484 			"Firmware advertises unknown WoWLAN status response %d!\n",
2485 			notif_ver);
2486 		status = NULL;
2487 	}
2488 
2489 out_free_resp:
2490 	iwl_free_resp(&cmd);
2491 	return status;
2492 }
2493 
2494 /* releases the MVM mutex */
2495 static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm,
2496 					 struct ieee80211_vif *vif,
2497 					 struct iwl_wowlan_status_data *status)
2498 {
2499 	int i;
2500 	bool keep;
2501 	struct iwl_mvm_sta *mvm_ap_sta;
2502 
2503 	if (!status)
2504 		goto out_unlock;
2505 
2506 	IWL_DEBUG_WOWLAN(mvm, "wakeup reason 0x%x\n",
2507 			 status->wakeup_reasons);
2508 
2509 	/* still at hard-coded place 0 for D3 image */
2510 	mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, 0);
2511 	if (!mvm_ap_sta)
2512 		goto out_unlock;
2513 
2514 	for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
2515 		u16 seq = status->qos_seq_ctr[i];
2516 		/* firmware stores last-used value, we store next value */
2517 		seq += 0x10;
2518 		mvm_ap_sta->tid_data[i].seq_number = seq;
2519 	}
2520 
2521 	if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000) {
2522 		i = mvm->offload_tid;
2523 		iwl_trans_set_q_ptrs(mvm->trans,
2524 				     mvm_ap_sta->tid_data[i].txq_id,
2525 				     mvm_ap_sta->tid_data[i].seq_number >> 4);
2526 	}
2527 
2528 	/* now we have all the data we need, unlock to avoid mac80211 issues */
2529 	mutex_unlock(&mvm->mutex);
2530 
2531 	iwl_mvm_report_wakeup_reasons(mvm, vif, status);
2532 
2533 	keep = iwl_mvm_setup_connection_keep(mvm, vif, status);
2534 
2535 	return keep;
2536 
2537 out_unlock:
2538 	mutex_unlock(&mvm->mutex);
2539 	return false;
2540 }
2541 
2542 #define ND_QUERY_BUF_LEN (sizeof(struct iwl_scan_offload_profile_match) * \
2543 			  IWL_SCAN_MAX_PROFILES)
2544 
2545 struct iwl_mvm_nd_results {
2546 	u32 matched_profiles;
2547 	u8 matches[ND_QUERY_BUF_LEN];
2548 };
2549 
2550 static int
2551 iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm,
2552 				struct iwl_mvm_nd_results *results)
2553 {
2554 	struct iwl_scan_offload_match_info *query;
2555 	struct iwl_host_cmd cmd = {
2556 		.id = SCAN_OFFLOAD_PROFILES_QUERY_CMD,
2557 		.flags = CMD_WANT_SKB,
2558 	};
2559 	int ret, len;
2560 	size_t query_len, matches_len;
2561 	int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw);
2562 
2563 	ret = iwl_mvm_send_cmd(mvm, &cmd);
2564 	if (ret) {
2565 		IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret);
2566 		return ret;
2567 	}
2568 
2569 	if (fw_has_api(&mvm->fw->ucode_capa,
2570 		       IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2571 		query_len = sizeof(struct iwl_scan_offload_match_info);
2572 		matches_len = sizeof(struct iwl_scan_offload_profile_match) *
2573 			max_profiles;
2574 	} else {
2575 		query_len = sizeof(struct iwl_scan_offload_profiles_query_v1);
2576 		matches_len = sizeof(struct iwl_scan_offload_profile_match_v1) *
2577 			max_profiles;
2578 	}
2579 
2580 	len = iwl_rx_packet_payload_len(cmd.resp_pkt);
2581 	if (len < query_len) {
2582 		IWL_ERR(mvm, "Invalid scan offload profiles query response!\n");
2583 		ret = -EIO;
2584 		goto out_free_resp;
2585 	}
2586 
2587 	query = (void *)cmd.resp_pkt->data;
2588 
2589 	results->matched_profiles = le32_to_cpu(query->matched_profiles);
2590 	memcpy(results->matches, query->matches, matches_len);
2591 
2592 #ifdef CONFIG_IWLWIFI_DEBUGFS
2593 	mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done);
2594 #endif
2595 
2596 out_free_resp:
2597 	iwl_free_resp(&cmd);
2598 	return ret;
2599 }
2600 
2601 static int iwl_mvm_query_num_match_chans(struct iwl_mvm *mvm,
2602 					 struct iwl_mvm_nd_results *results,
2603 					 int idx)
2604 {
2605 	int n_chans = 0, i;
2606 
2607 	if (fw_has_api(&mvm->fw->ucode_capa,
2608 		       IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2609 		struct iwl_scan_offload_profile_match *matches =
2610 			(void *)results->matches;
2611 
2612 		for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; i++)
2613 			n_chans += hweight8(matches[idx].matching_channels[i]);
2614 	} else {
2615 		struct iwl_scan_offload_profile_match_v1 *matches =
2616 			(void *)results->matches;
2617 
2618 		for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1; i++)
2619 			n_chans += hweight8(matches[idx].matching_channels[i]);
2620 	}
2621 
2622 	return n_chans;
2623 }
2624 
2625 static void iwl_mvm_query_set_freqs(struct iwl_mvm *mvm,
2626 				    struct iwl_mvm_nd_results *results,
2627 				    struct cfg80211_wowlan_nd_match *match,
2628 				    int idx)
2629 {
2630 	int i;
2631 
2632 	if (fw_has_api(&mvm->fw->ucode_capa,
2633 		       IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2634 		struct iwl_scan_offload_profile_match *matches =
2635 			 (void *)results->matches;
2636 
2637 		for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; i++)
2638 			if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
2639 				match->channels[match->n_channels++] =
2640 					mvm->nd_channels[i]->center_freq;
2641 	} else {
2642 		struct iwl_scan_offload_profile_match_v1 *matches =
2643 			 (void *)results->matches;
2644 
2645 		for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1 * 8; i++)
2646 			if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
2647 				match->channels[match->n_channels++] =
2648 					mvm->nd_channels[i]->center_freq;
2649 	}
2650 }
2651 
2652 /**
2653  * enum iwl_d3_notif - d3 notifications
2654  * @IWL_D3_NOTIF_WOWLAN_INFO: WOWLAN_INFO_NOTIF was received
2655  * @IWL_D3_NOTIF_WOWLAN_WAKE_PKT: WOWLAN_WAKE_PKT_NOTIF was received
2656  * @IWL_D3_NOTIF_PROT_OFFLOAD: PROT_OFFLOAD_NOTIF was received
2657  * @IWL_D3_ND_MATCH_INFO: OFFLOAD_MATCH_INFO_NOTIF was received
2658  * @IWL_D3_NOTIF_D3_END_NOTIF: D3_END_NOTIF was received
2659  */
2660 enum iwl_d3_notif {
2661 	IWL_D3_NOTIF_WOWLAN_INFO =	BIT(0),
2662 	IWL_D3_NOTIF_WOWLAN_WAKE_PKT =	BIT(1),
2663 	IWL_D3_NOTIF_PROT_OFFLOAD =	BIT(2),
2664 	IWL_D3_ND_MATCH_INFO      =     BIT(3),
2665 	IWL_D3_NOTIF_D3_END_NOTIF =	BIT(4)
2666 };
2667 
2668 /* manage d3 resume data */
2669 struct iwl_d3_data {
2670 	struct iwl_wowlan_status_data *status;
2671 	bool test;
2672 	u32 d3_end_flags;
2673 	u32 notif_expected;	/* bitmap - see &enum iwl_d3_notif */
2674 	u32 notif_received;	/* bitmap - see &enum iwl_d3_notif */
2675 	struct iwl_mvm_nd_results *nd_results;
2676 	bool nd_results_valid;
2677 };
2678 
2679 static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm,
2680 					    struct ieee80211_vif *vif,
2681 					    struct iwl_d3_data *d3_data)
2682 {
2683 	struct cfg80211_wowlan_nd_info *net_detect = NULL;
2684 	struct cfg80211_wowlan_wakeup wakeup = {
2685 		.pattern_idx = -1,
2686 	};
2687 	struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
2688 	unsigned long matched_profiles;
2689 	u32 reasons = 0;
2690 	int i, n_matches, ret;
2691 
2692 	if (WARN_ON(!d3_data || !d3_data->status))
2693 		goto out;
2694 
2695 	reasons = d3_data->status->wakeup_reasons;
2696 
2697 	if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
2698 		wakeup.rfkill_release = true;
2699 
2700 	if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS)
2701 		goto out;
2702 
2703 	if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
2704 				     WOWLAN_INFO_NOTIFICATION, 0)) {
2705 		IWL_INFO(mvm, "Query FW for ND results\n");
2706 		ret = iwl_mvm_netdetect_query_results(mvm, d3_data->nd_results);
2707 
2708 	} else {
2709 		IWL_INFO(mvm, "Notification based ND results\n");
2710 		ret = d3_data->nd_results_valid ? 0 : -1;
2711 	}
2712 
2713 	if (ret || !d3_data->nd_results->matched_profiles) {
2714 		wakeup_report = NULL;
2715 		goto out;
2716 	}
2717 
2718 	matched_profiles = d3_data->nd_results->matched_profiles;
2719 	if (mvm->n_nd_match_sets) {
2720 		n_matches = hweight_long(matched_profiles);
2721 	} else {
2722 		IWL_ERR(mvm, "no net detect match information available\n");
2723 		n_matches = 0;
2724 	}
2725 
2726 	net_detect = kzalloc(struct_size(net_detect, matches, n_matches),
2727 			     GFP_KERNEL);
2728 	if (!net_detect || !n_matches)
2729 		goto out_report_nd;
2730 
2731 	for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) {
2732 		struct cfg80211_wowlan_nd_match *match;
2733 		int idx, n_channels = 0;
2734 
2735 		n_channels = iwl_mvm_query_num_match_chans(mvm,
2736 							   d3_data->nd_results,
2737 							   i);
2738 
2739 		match = kzalloc(struct_size(match, channels, n_channels),
2740 				GFP_KERNEL);
2741 		if (!match)
2742 			goto out_report_nd;
2743 
2744 		net_detect->matches[net_detect->n_matches++] = match;
2745 
2746 		/* We inverted the order of the SSIDs in the scan
2747 		 * request, so invert the index here.
2748 		 */
2749 		idx = mvm->n_nd_match_sets - i - 1;
2750 		match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len;
2751 		memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid,
2752 		       match->ssid.ssid_len);
2753 
2754 		if (mvm->n_nd_channels < n_channels)
2755 			continue;
2756 
2757 		iwl_mvm_query_set_freqs(mvm, d3_data->nd_results, match, i);
2758 	}
2759 
2760 out_report_nd:
2761 	wakeup.net_detect = net_detect;
2762 out:
2763 	iwl_mvm_free_nd(mvm);
2764 
2765 	mutex_unlock(&mvm->mutex);
2766 	ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
2767 
2768 	if (net_detect) {
2769 		for (i = 0; i < net_detect->n_matches; i++)
2770 			kfree(net_detect->matches[i]);
2771 		kfree(net_detect);
2772 	}
2773 }
2774 
2775 static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac,
2776 				       struct ieee80211_vif *vif)
2777 {
2778 	/* skip the one we keep connection on */
2779 	if (data == vif)
2780 		return;
2781 
2782 	if (vif->type == NL80211_IFTYPE_STATION)
2783 		ieee80211_resume_disconnect(vif);
2784 }
2785 
2786 static bool iwl_mvm_rt_status(struct iwl_trans *trans, u32 base, u32 *err_id)
2787 {
2788 	struct error_table_start {
2789 		/* cf. struct iwl_error_event_table */
2790 		u32 valid;
2791 		__le32 err_id;
2792 	} err_info;
2793 
2794 	if (!base)
2795 		return false;
2796 
2797 	iwl_trans_read_mem_bytes(trans, base,
2798 				 &err_info, sizeof(err_info));
2799 	if (err_info.valid && err_id)
2800 		*err_id = le32_to_cpu(err_info.err_id);
2801 
2802 	return !!err_info.valid;
2803 }
2804 
2805 static bool iwl_mvm_check_rt_status(struct iwl_mvm *mvm,
2806 				   struct ieee80211_vif *vif)
2807 {
2808 	u32 err_id;
2809 
2810 	/* check for lmac1 error */
2811 	if (iwl_mvm_rt_status(mvm->trans,
2812 			      mvm->trans->dbg.lmac_error_event_table[0],
2813 			      &err_id)) {
2814 		if (err_id == RF_KILL_INDICATOR_FOR_WOWLAN) {
2815 			struct cfg80211_wowlan_wakeup wakeup = {
2816 				.rfkill_release = true,
2817 			};
2818 			ieee80211_report_wowlan_wakeup(vif, &wakeup,
2819 						       GFP_KERNEL);
2820 		}
2821 		return true;
2822 	}
2823 
2824 	/* check if we have lmac2 set and check for error */
2825 	if (iwl_mvm_rt_status(mvm->trans,
2826 			      mvm->trans->dbg.lmac_error_event_table[1], NULL))
2827 		return true;
2828 
2829 	/* check for umac error */
2830 	if (iwl_mvm_rt_status(mvm->trans,
2831 			      mvm->trans->dbg.umac_error_event_table, NULL))
2832 		return true;
2833 
2834 	return false;
2835 }
2836 
2837 /*
2838  * This function assumes:
2839  *	1. The mutex is already held.
2840  *	2. The callee functions unlock the mutex.
2841  */
2842 static bool
2843 iwl_mvm_choose_query_wakeup_reasons(struct iwl_mvm *mvm,
2844 				    struct ieee80211_vif *vif,
2845 				    struct iwl_d3_data *d3_data)
2846 {
2847 	lockdep_assert_held(&mvm->mutex);
2848 
2849 	/* if FW uses status notification, status shouldn't be NULL here */
2850 	if (!d3_data->status) {
2851 		struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2852 		u8 sta_id = mvm->net_detect ? IWL_MVM_INVALID_STA :
2853 					      mvmvif->deflink.ap_sta_id;
2854 
2855 		d3_data->status = iwl_mvm_send_wowlan_get_status(mvm, sta_id);
2856 	}
2857 
2858 	if (mvm->net_detect) {
2859 		iwl_mvm_query_netdetect_reasons(mvm, vif, d3_data);
2860 	} else {
2861 		bool keep = iwl_mvm_query_wakeup_reasons(mvm, vif,
2862 							 d3_data->status);
2863 
2864 #ifdef CONFIG_IWLWIFI_DEBUGFS
2865 		if (keep)
2866 			mvm->keep_vif = vif;
2867 #endif
2868 
2869 		return keep;
2870 	}
2871 	return false;
2872 }
2873 
2874 #define IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT (IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET | \
2875 						 IWL_WOWLAN_WAKEUP_BY_PATTERN | \
2876 						 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN |\
2877 						 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN_WILDCARD |\
2878 						 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN |\
2879 						 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN_WILDCARD)
2880 
2881 static int iwl_mvm_wowlan_store_wake_pkt(struct iwl_mvm *mvm,
2882 					 struct iwl_wowlan_wake_pkt_notif *notif,
2883 					 struct iwl_wowlan_status_data *status,
2884 					 u32 len)
2885 {
2886 	u32 data_size, packet_len = le32_to_cpu(notif->wake_packet_length);
2887 
2888 	if (len < sizeof(*notif)) {
2889 		IWL_ERR(mvm, "Invalid WoWLAN wake packet notification!\n");
2890 		return -EIO;
2891 	}
2892 
2893 	if (WARN_ON(!status)) {
2894 		IWL_ERR(mvm, "Got wake packet notification but wowlan status data is NULL\n");
2895 		return -EIO;
2896 	}
2897 
2898 	if (WARN_ON(!(status->wakeup_reasons &
2899 		      IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT))) {
2900 		IWL_ERR(mvm, "Got wakeup packet but wakeup reason is %x\n",
2901 			status->wakeup_reasons);
2902 		return -EIO;
2903 	}
2904 
2905 	data_size = len - offsetof(struct iwl_wowlan_wake_pkt_notif, wake_packet);
2906 
2907 	/* data_size got the padding from the notification, remove it. */
2908 	if (packet_len < data_size)
2909 		data_size = packet_len;
2910 
2911 	status->wake_packet = kmemdup(notif->wake_packet, data_size,
2912 				      GFP_ATOMIC);
2913 
2914 	if (!status->wake_packet)
2915 		return -ENOMEM;
2916 
2917 	status->wake_packet_length = packet_len;
2918 	status->wake_packet_bufsize = data_size;
2919 
2920 	return 0;
2921 }
2922 
2923 static void iwl_mvm_nd_match_info_handler(struct iwl_mvm *mvm,
2924 					  struct iwl_d3_data *d3_data,
2925 					  struct iwl_scan_offload_match_info *notif,
2926 					  u32 len)
2927 {
2928 	struct iwl_wowlan_status_data *status = d3_data->status;
2929 	struct ieee80211_vif *vif = iwl_mvm_get_bss_vif(mvm);
2930 	struct iwl_mvm_nd_results *results = d3_data->nd_results;
2931 	size_t i, matches_len = sizeof(struct iwl_scan_offload_profile_match) *
2932 		iwl_umac_scan_get_max_profiles(mvm->fw);
2933 
2934 	if (IS_ERR_OR_NULL(vif))
2935 		return;
2936 
2937 	if (len < sizeof(struct iwl_scan_offload_match_info)) {
2938 		IWL_ERR(mvm, "Invalid scan match info notification\n");
2939 		return;
2940 	}
2941 
2942 	if (!mvm->net_detect) {
2943 		IWL_ERR(mvm, "Unexpected scan match info notification\n");
2944 		return;
2945 	}
2946 
2947 	if (!status || status->wakeup_reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
2948 		IWL_ERR(mvm,
2949 			"Ignore scan match info notification: no reason\n");
2950 		return;
2951 	}
2952 
2953 #ifdef CONFIG_IWLWIFI_DEBUGFS
2954 	mvm->last_netdetect_scans = le32_to_cpu(notif->n_scans_done);
2955 #endif
2956 
2957 	results->matched_profiles = le32_to_cpu(notif->matched_profiles);
2958 	IWL_INFO(mvm, "number of matched profiles=%u\n",
2959 		 results->matched_profiles);
2960 
2961 	if (results->matched_profiles) {
2962 		memcpy(results->matches, notif->matches, matches_len);
2963 		d3_data->nd_results_valid = TRUE;
2964 	}
2965 
2966 	/* no scan should be active at this point */
2967 	mvm->scan_status = 0;
2968 	for (i = 0; i < mvm->max_scans; i++)
2969 		mvm->scan_uid_status[i] = 0;
2970 }
2971 
2972 static bool iwl_mvm_wait_d3_notif(struct iwl_notif_wait_data *notif_wait,
2973 				  struct iwl_rx_packet *pkt, void *data)
2974 {
2975 	struct iwl_mvm *mvm =
2976 		container_of(notif_wait, struct iwl_mvm, notif_wait);
2977 	struct iwl_d3_data *d3_data = data;
2978 	u32 len = iwl_rx_packet_payload_len(pkt);
2979 	int ret;
2980 	int wowlan_info_ver = iwl_fw_lookup_notif_ver(mvm->fw,
2981 						      PROT_OFFLOAD_GROUP,
2982 						      WOWLAN_INFO_NOTIFICATION,
2983 						      IWL_FW_CMD_VER_UNKNOWN);
2984 
2985 
2986 	switch (WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) {
2987 	case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION): {
2988 
2989 		if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_INFO) {
2990 			/* We might get two notifications due to dual bss */
2991 			IWL_DEBUG_WOWLAN(mvm,
2992 					 "Got additional wowlan info notification\n");
2993 			break;
2994 		}
2995 
2996 		if (wowlan_info_ver < 2) {
2997 			struct iwl_wowlan_info_notif_v1 *notif_v1 =
2998 				(void *)pkt->data;
2999 			struct iwl_wowlan_info_notif_v2 *notif_v2;
3000 
3001 			notif_v2 = kmemdup(notif_v1, sizeof(*notif_v2), GFP_ATOMIC);
3002 
3003 			if (!notif_v2)
3004 				return false;
3005 
3006 			notif_v2->tid_tear_down = notif_v1->tid_tear_down;
3007 			notif_v2->station_id = notif_v1->station_id;
3008 			memset_after(notif_v2, 0, station_id);
3009 			iwl_mvm_parse_wowlan_info_notif_v2(mvm, notif_v2,
3010 							   d3_data->status,
3011 							   len);
3012 			kfree(notif_v2);
3013 
3014 		} else if (wowlan_info_ver == 2) {
3015 			struct iwl_wowlan_info_notif_v2 *notif_v2 =
3016 				(void *)pkt->data;
3017 
3018 			iwl_mvm_parse_wowlan_info_notif_v2(mvm, notif_v2,
3019 							   d3_data->status,
3020 							   len);
3021 		} else {
3022 			struct iwl_wowlan_info_notif *notif =
3023 				(void *)pkt->data;
3024 
3025 			iwl_mvm_parse_wowlan_info_notif(mvm, notif,
3026 							d3_data->status, len);
3027 		}
3028 
3029 		d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_INFO;
3030 
3031 		if (d3_data->status &&
3032 		    d3_data->status->wakeup_reasons & IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT)
3033 			/* We are supposed to get also wake packet notif */
3034 			d3_data->notif_expected |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT;
3035 
3036 		break;
3037 	}
3038 	case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION): {
3039 		struct iwl_wowlan_wake_pkt_notif *notif = (void *)pkt->data;
3040 
3041 		if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_WAKE_PKT) {
3042 			/* We shouldn't get two wake packet notifications */
3043 			IWL_ERR(mvm,
3044 				"Got additional wowlan wake packet notification\n");
3045 		} else {
3046 			d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT;
3047 			len =  iwl_rx_packet_payload_len(pkt);
3048 			ret = iwl_mvm_wowlan_store_wake_pkt(mvm, notif,
3049 							    d3_data->status,
3050 							    len);
3051 			if (ret)
3052 				IWL_ERR(mvm,
3053 					"Can't parse WOWLAN_WAKE_PKT_NOTIFICATION\n");
3054 		}
3055 
3056 		break;
3057 	}
3058 	case WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF): {
3059 		struct iwl_scan_offload_match_info *notif = (void *)pkt->data;
3060 
3061 		if (d3_data->notif_received & IWL_D3_ND_MATCH_INFO) {
3062 			IWL_ERR(mvm,
3063 				"Got additional netdetect match info\n");
3064 			break;
3065 		}
3066 
3067 		d3_data->notif_received |= IWL_D3_ND_MATCH_INFO;
3068 
3069 		/* explicitly set this in the 'expected' as well */
3070 		d3_data->notif_expected |= IWL_D3_ND_MATCH_INFO;
3071 
3072 		len = iwl_rx_packet_payload_len(pkt);
3073 		iwl_mvm_nd_match_info_handler(mvm, d3_data, notif, len);
3074 		break;
3075 	}
3076 	case WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION): {
3077 		struct iwl_mvm_d3_end_notif *notif = (void *)pkt->data;
3078 
3079 		d3_data->d3_end_flags = __le32_to_cpu(notif->flags);
3080 		d3_data->notif_received |= IWL_D3_NOTIF_D3_END_NOTIF;
3081 
3082 		break;
3083 	}
3084 	default:
3085 		WARN_ON(1);
3086 	}
3087 
3088 	return d3_data->notif_received == d3_data->notif_expected;
3089 }
3090 
3091 static int iwl_mvm_resume_firmware(struct iwl_mvm *mvm, bool test)
3092 {
3093 	int ret;
3094 	enum iwl_d3_status d3_status;
3095 	struct iwl_host_cmd cmd = {
3096 			.id = D0I3_END_CMD,
3097 			.flags = CMD_WANT_SKB | CMD_SEND_IN_D3,
3098 		};
3099 	bool reset = fw_has_capa(&mvm->fw->ucode_capa,
3100 				 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
3101 
3102 	ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, !reset);
3103 	if (ret)
3104 		return ret;
3105 
3106 	if (d3_status != IWL_D3_STATUS_ALIVE) {
3107 		IWL_INFO(mvm, "Device was reset during suspend\n");
3108 		return -ENOENT;
3109 	}
3110 
3111 	/*
3112 	 * We should trigger resume flow using command only for 22000 family
3113 	 * AX210 and above don't need the command since they have
3114 	 * the doorbell interrupt.
3115 	 */
3116 	if (mvm->trans->trans_cfg->device_family <= IWL_DEVICE_FAMILY_22000 &&
3117 	    fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_D0I3_END_FIRST)) {
3118 		ret = iwl_mvm_send_cmd(mvm, &cmd);
3119 		if (ret < 0)
3120 			IWL_ERR(mvm, "Failed to send D0I3_END_CMD first (%d)\n",
3121 				ret);
3122 	}
3123 
3124 	return ret;
3125 }
3126 
3127 #define IWL_MVM_D3_NOTIF_TIMEOUT (HZ / 5)
3128 
3129 static int iwl_mvm_d3_notif_wait(struct iwl_mvm *mvm,
3130 				 struct iwl_d3_data *d3_data)
3131 {
3132 	static const u16 d3_resume_notif[] = {
3133 		WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION),
3134 		WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION),
3135 		WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF),
3136 		WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION)
3137 	};
3138 	struct iwl_notification_wait wait_d3_notif;
3139 	int ret;
3140 
3141 	iwl_init_notification_wait(&mvm->notif_wait, &wait_d3_notif,
3142 				   d3_resume_notif, ARRAY_SIZE(d3_resume_notif),
3143 				   iwl_mvm_wait_d3_notif, d3_data);
3144 
3145 	ret = iwl_mvm_resume_firmware(mvm, d3_data->test);
3146 	if (ret) {
3147 		iwl_remove_notification(&mvm->notif_wait, &wait_d3_notif);
3148 		return ret;
3149 	}
3150 
3151 	return iwl_wait_notification(&mvm->notif_wait, &wait_d3_notif,
3152 				     IWL_MVM_D3_NOTIF_TIMEOUT);
3153 }
3154 
3155 static inline bool iwl_mvm_d3_resume_notif_based(struct iwl_mvm *mvm)
3156 {
3157 	return iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
3158 				       WOWLAN_INFO_NOTIFICATION, 0) &&
3159 		iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
3160 					WOWLAN_WAKE_PKT_NOTIFICATION, 0) &&
3161 		iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
3162 					D3_END_NOTIFICATION, 0);
3163 }
3164 
3165 static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test)
3166 {
3167 	struct ieee80211_vif *vif = NULL;
3168 	int ret = 1;
3169 	struct iwl_mvm_nd_results results = {};
3170 	struct iwl_d3_data d3_data = {
3171 		.test = test,
3172 		.notif_expected =
3173 			IWL_D3_NOTIF_WOWLAN_INFO |
3174 			IWL_D3_NOTIF_D3_END_NOTIF,
3175 		.nd_results_valid = false,
3176 		.nd_results = &results,
3177 	};
3178 	bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
3179 					 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
3180 	bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa,
3181 				      IWL_UCODE_TLV_CAPA_D0I3_END_FIRST);
3182 	bool resume_notif_based = iwl_mvm_d3_resume_notif_based(mvm);
3183 	bool keep = false;
3184 
3185 	mutex_lock(&mvm->mutex);
3186 
3187 	mvm->last_reset_or_resume_time_jiffies = jiffies;
3188 
3189 	/* get the BSS vif pointer again */
3190 	vif = iwl_mvm_get_bss_vif(mvm);
3191 	if (IS_ERR_OR_NULL(vif))
3192 		goto err;
3193 
3194 	iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
3195 
3196 	if (iwl_mvm_check_rt_status(mvm, vif)) {
3197 		set_bit(STATUS_FW_ERROR, &mvm->trans->status);
3198 		iwl_mvm_dump_nic_error_log(mvm);
3199 		iwl_dbg_tlv_time_point(&mvm->fwrt,
3200 				       IWL_FW_INI_TIME_POINT_FW_ASSERT, NULL);
3201 		iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert,
3202 					false, 0);
3203 		ret = 1;
3204 		goto err;
3205 	}
3206 
3207 	if (resume_notif_based) {
3208 		d3_data.status = kzalloc(sizeof(*d3_data.status), GFP_KERNEL);
3209 		if (!d3_data.status) {
3210 			IWL_ERR(mvm, "Failed to allocate wowlan status\n");
3211 			ret = -ENOMEM;
3212 			goto err;
3213 		}
3214 
3215 		ret = iwl_mvm_d3_notif_wait(mvm, &d3_data);
3216 		if (ret)
3217 			goto err;
3218 	} else {
3219 		ret = iwl_mvm_resume_firmware(mvm, test);
3220 		if (ret < 0)
3221 			goto err;
3222 	}
3223 
3224 	/* after the successful handshake, we're out of D3 */
3225 	mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
3226 
3227 	/* when reset is required we can't send these following commands */
3228 	if (d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)
3229 		goto query_wakeup_reasons;
3230 
3231 	/*
3232 	 * Query the current location and source from the D3 firmware so we
3233 	 * can play it back when we re-intiailize the D0 firmware
3234 	 */
3235 	iwl_mvm_update_changed_regdom(mvm);
3236 
3237 	/* Re-configure PPAG settings */
3238 	iwl_mvm_ppag_send_cmd(mvm);
3239 
3240 	if (!unified_image)
3241 		/*  Re-configure default SAR profile */
3242 		iwl_mvm_sar_select_profile(mvm, 1, 1);
3243 
3244 	if (mvm->net_detect && unified_image) {
3245 		/* If this is a non-unified image, we restart the FW,
3246 		 * so no need to stop the netdetect scan.  If that
3247 		 * fails, continue and try to get the wake-up reasons,
3248 		 * but trigger a HW restart by keeping a failure code
3249 		 * in ret.
3250 		 */
3251 		ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT,
3252 					false);
3253 	}
3254 
3255 query_wakeup_reasons:
3256 	keep = iwl_mvm_choose_query_wakeup_reasons(mvm, vif, &d3_data);
3257 	/* has unlocked the mutex, so skip that */
3258 	goto out;
3259 
3260 err:
3261 	mutex_unlock(&mvm->mutex);
3262 out:
3263 	if (d3_data.status)
3264 		kfree(d3_data.status->wake_packet);
3265 	kfree(d3_data.status);
3266 	iwl_mvm_free_nd(mvm);
3267 
3268 	if (!d3_data.test && !mvm->net_detect)
3269 		ieee80211_iterate_active_interfaces_mtx(mvm->hw,
3270 							IEEE80211_IFACE_ITER_NORMAL,
3271 							iwl_mvm_d3_disconnect_iter,
3272 							keep ? vif : NULL);
3273 
3274 	clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
3275 
3276 	/* no need to reset the device in unified images, if successful */
3277 	if (unified_image && !ret) {
3278 		/* nothing else to do if we already sent D0I3_END_CMD */
3279 		if (d0i3_first)
3280 			return 0;
3281 
3282 		if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
3283 					     D3_END_NOTIFICATION, 0)) {
3284 			ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL);
3285 			if (!ret)
3286 				return 0;
3287 		} else if (!(d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)) {
3288 			return 0;
3289 		}
3290 	}
3291 
3292 	/*
3293 	 * Reconfigure the device in one of the following cases:
3294 	 * 1. We are not using a unified image
3295 	 * 2. We are using a unified image but had an error while exiting D3
3296 	 */
3297 	set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
3298 
3299 	/* regardless of what happened, we're now out of D3 */
3300 	mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
3301 
3302 	return 1;
3303 }
3304 
3305 int iwl_mvm_resume(struct ieee80211_hw *hw)
3306 {
3307 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3308 	int ret;
3309 
3310 	ret = __iwl_mvm_resume(mvm, false);
3311 
3312 	iwl_mvm_resume_tcm(mvm);
3313 
3314 	iwl_fw_runtime_resume(&mvm->fwrt);
3315 
3316 	return ret;
3317 }
3318 
3319 void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled)
3320 {
3321 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3322 
3323 	device_set_wakeup_enable(mvm->trans->dev, enabled);
3324 }
3325 
3326 #ifdef CONFIG_IWLWIFI_DEBUGFS
3327 static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file)
3328 {
3329 	struct iwl_mvm *mvm = inode->i_private;
3330 	int err;
3331 
3332 	if (mvm->d3_test_active)
3333 		return -EBUSY;
3334 
3335 	file->private_data = inode->i_private;
3336 
3337 	iwl_mvm_pause_tcm(mvm, true);
3338 
3339 	iwl_fw_runtime_suspend(&mvm->fwrt);
3340 
3341 	/* start pseudo D3 */
3342 	rtnl_lock();
3343 	wiphy_lock(mvm->hw->wiphy);
3344 	err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true);
3345 	wiphy_unlock(mvm->hw->wiphy);
3346 	rtnl_unlock();
3347 	if (err > 0)
3348 		err = -EINVAL;
3349 	if (err)
3350 		return err;
3351 
3352 	mvm->d3_test_active = true;
3353 	mvm->keep_vif = NULL;
3354 	return 0;
3355 }
3356 
3357 static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf,
3358 				    size_t count, loff_t *ppos)
3359 {
3360 	struct iwl_mvm *mvm = file->private_data;
3361 	u32 pme_asserted;
3362 
3363 	while (true) {
3364 		/* read pme_ptr if available */
3365 		if (mvm->d3_test_pme_ptr) {
3366 			pme_asserted = iwl_trans_read_mem32(mvm->trans,
3367 						mvm->d3_test_pme_ptr);
3368 			if (pme_asserted)
3369 				break;
3370 		}
3371 
3372 		if (msleep_interruptible(100))
3373 			break;
3374 	}
3375 
3376 	return 0;
3377 }
3378 
3379 static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac,
3380 					      struct ieee80211_vif *vif)
3381 {
3382 	/* skip the one we keep connection on */
3383 	if (_data == vif)
3384 		return;
3385 
3386 	if (vif->type == NL80211_IFTYPE_STATION)
3387 		ieee80211_connection_loss(vif);
3388 }
3389 
3390 static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file)
3391 {
3392 	struct iwl_mvm *mvm = inode->i_private;
3393 	bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
3394 					 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
3395 
3396 	mvm->d3_test_active = false;
3397 
3398 	iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
3399 
3400 	rtnl_lock();
3401 	wiphy_lock(mvm->hw->wiphy);
3402 	__iwl_mvm_resume(mvm, true);
3403 	wiphy_unlock(mvm->hw->wiphy);
3404 	rtnl_unlock();
3405 
3406 	iwl_mvm_resume_tcm(mvm);
3407 
3408 	iwl_fw_runtime_resume(&mvm->fwrt);
3409 
3410 	iwl_abort_notification_waits(&mvm->notif_wait);
3411 	if (!unified_image) {
3412 		int remaining_time = 10;
3413 
3414 		ieee80211_restart_hw(mvm->hw);
3415 
3416 		/* wait for restart and disconnect all interfaces */
3417 		while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
3418 		       remaining_time > 0) {
3419 			remaining_time--;
3420 			msleep(1000);
3421 		}
3422 
3423 		if (remaining_time == 0)
3424 			IWL_ERR(mvm, "Timed out waiting for HW restart!\n");
3425 	}
3426 
3427 	ieee80211_iterate_active_interfaces_atomic(
3428 		mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
3429 		iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif);
3430 
3431 	return 0;
3432 }
3433 
3434 const struct file_operations iwl_dbgfs_d3_test_ops = {
3435 	.llseek = no_llseek,
3436 	.open = iwl_mvm_d3_test_open,
3437 	.read = iwl_mvm_d3_test_read,
3438 	.release = iwl_mvm_d3_test_release,
3439 };
3440 #endif
3441