1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /*
3  * Copyright (C) 2012-2014, 2018-2022 Intel Corporation
4  * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
5  * Copyright (C) 2016-2017 Intel Deutschland GmbH
6  */
7 #include <linux/etherdevice.h>
8 #include <linux/ip.h>
9 #include <linux/fs.h>
10 #include <net/cfg80211.h>
11 #include <net/ipv6.h>
12 #include <net/tcp.h>
13 #include <net/addrconf.h>
14 #include "iwl-modparams.h"
15 #include "fw-api.h"
16 #include "mvm.h"
17 #include "fw/img.h"
18 
iwl_mvm_set_rekey_data(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct cfg80211_gtk_rekey_data * data)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)
iwl_mvm_ipv6_addr_change(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct inet6_dev * idev)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 
iwl_mvm_set_default_unicast_key(struct ieee80211_hw * hw,struct ieee80211_vif * vif,int idx)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 
iwl_mvm_convert_p1k(u16 * p1k,__le16 * out)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 
iwl_mvm_find_max_pn(struct ieee80211_key_conf * key,struct iwl_mvm_key_pn * ptk_pn,struct ieee80211_key_seq * seq,int tid,int queues)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 
iwl_mvm_wowlan_program_keys(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key,void * _data)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 
iwl_mvm_wowlan_get_rsc_tsc_data(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key,void * _data)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 
iwl_mvm_wowlan_get_rsc_v5_data(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key,void * _data)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 
iwl_mvm_wowlan_config_rsc_tsc(struct iwl_mvm * mvm,struct ieee80211_vif * vif)452 static int iwl_mvm_wowlan_config_rsc_tsc(struct iwl_mvm *mvm,
453 					 struct ieee80211_vif *vif)
454 {
455 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
456 	int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TSC_RSC_PARAM,
457 					IWL_FW_CMD_VER_UNKNOWN);
458 	int ret;
459 
460 	if (ver == 5) {
461 		struct wowlan_key_rsc_v5_data data = {};
462 		int i;
463 
464 		data.rsc = kmalloc(sizeof(*data.rsc), GFP_KERNEL);
465 		if (!data.rsc)
466 			return -ENOMEM;
467 
468 		memset(data.rsc, 0xff, sizeof(*data.rsc));
469 
470 		for (i = 0; i < ARRAY_SIZE(data.rsc->mcast_key_id_map); i++)
471 			data.rsc->mcast_key_id_map[i] =
472 				IWL_MCAST_KEY_MAP_INVALID;
473 		data.rsc->sta_id = cpu_to_le32(mvmvif->ap_sta_id);
474 
475 		ieee80211_iter_keys(mvm->hw, vif,
476 				    iwl_mvm_wowlan_get_rsc_v5_data,
477 				    &data);
478 
479 		if (data.have_rsc)
480 			ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM,
481 						   CMD_ASYNC, sizeof(*data.rsc),
482 						   data.rsc);
483 		else
484 			ret = 0;
485 		kfree(data.rsc);
486 	} else if (ver == 4 || ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN) {
487 		struct wowlan_key_rsc_tsc_data data = {};
488 		int size;
489 
490 		data.rsc_tsc = kzalloc(sizeof(*data.rsc_tsc), GFP_KERNEL);
491 		if (!data.rsc_tsc)
492 			return -ENOMEM;
493 
494 		if (ver == 4) {
495 			size = sizeof(*data.rsc_tsc);
496 			data.rsc_tsc->sta_id = cpu_to_le32(mvmvif->ap_sta_id);
497 		} else {
498 			/* ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN */
499 			size = sizeof(data.rsc_tsc->params);
500 		}
501 
502 		ieee80211_iter_keys(mvm->hw, vif,
503 				    iwl_mvm_wowlan_get_rsc_tsc_data,
504 				    &data);
505 
506 		if (data.have_rsc_tsc)
507 			ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM,
508 						   CMD_ASYNC, size,
509 						   data.rsc_tsc);
510 		else
511 			ret = 0;
512 		kfree(data.rsc_tsc);
513 	} else {
514 		ret = 0;
515 		WARN_ON_ONCE(1);
516 	}
517 
518 	return ret;
519 }
520 
521 struct wowlan_key_tkip_data {
522 	struct iwl_wowlan_tkip_params_cmd tkip;
523 	bool have_tkip_keys;
524 };
525 
iwl_mvm_wowlan_get_tkip_data(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key,void * _data)526 static void iwl_mvm_wowlan_get_tkip_data(struct ieee80211_hw *hw,
527 					 struct ieee80211_vif *vif,
528 					 struct ieee80211_sta *sta,
529 					 struct ieee80211_key_conf *key,
530 					 void *_data)
531 {
532 	struct wowlan_key_tkip_data *data = _data;
533 	struct iwl_p1k_cache *rx_p1ks;
534 	u8 *rx_mic_key;
535 	struct ieee80211_key_seq seq;
536 	u32 cur_rx_iv32 = 0;
537 	u16 p1k[IWL_P1K_SIZE];
538 	int i;
539 
540 	switch (key->cipher) {
541 	default:
542 		break;
543 	case WLAN_CIPHER_SUITE_TKIP:
544 		if (sta) {
545 			u64 pn64;
546 
547 			rx_p1ks = data->tkip.rx_uni;
548 
549 			pn64 = atomic64_read(&key->tx_pn);
550 
551 			ieee80211_get_tkip_p1k_iv(key, TKIP_PN_TO_IV32(pn64),
552 						  p1k);
553 			iwl_mvm_convert_p1k(p1k, data->tkip.tx.p1k);
554 
555 			memcpy(data->tkip.mic_keys.tx,
556 			       &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
557 			       IWL_MIC_KEY_SIZE);
558 
559 			rx_mic_key = data->tkip.mic_keys.rx_unicast;
560 		} else {
561 			rx_p1ks = data->tkip.rx_multi;
562 			rx_mic_key = data->tkip.mic_keys.rx_mcast;
563 		}
564 
565 		for (i = 0; i < IWL_NUM_RSC; i++) {
566 			/* wrapping isn't allowed, AP must rekey */
567 			if (seq.tkip.iv32 > cur_rx_iv32)
568 				cur_rx_iv32 = seq.tkip.iv32;
569 		}
570 
571 		ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
572 					  cur_rx_iv32, p1k);
573 		iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k);
574 		ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
575 					  cur_rx_iv32 + 1, p1k);
576 		iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k);
577 
578 		memcpy(rx_mic_key,
579 		       &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
580 		       IWL_MIC_KEY_SIZE);
581 
582 		data->have_tkip_keys = true;
583 		break;
584 	}
585 }
586 
587 struct wowlan_key_gtk_type_iter {
588 	struct iwl_wowlan_kek_kck_material_cmd_v4 *kek_kck_cmd;
589 };
590 
iwl_mvm_wowlan_gtk_type_iter(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key,void * _data)591 static void iwl_mvm_wowlan_gtk_type_iter(struct ieee80211_hw *hw,
592 					 struct ieee80211_vif *vif,
593 					 struct ieee80211_sta *sta,
594 					 struct ieee80211_key_conf *key,
595 					 void *_data)
596 {
597 	struct wowlan_key_gtk_type_iter *data = _data;
598 
599 	switch (key->cipher) {
600 	default:
601 		return;
602 	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
603 	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
604 		data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_GCMP);
605 		return;
606 	case WLAN_CIPHER_SUITE_AES_CMAC:
607 		data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_CCM);
608 		return;
609 	case WLAN_CIPHER_SUITE_CCMP:
610 		if (!sta)
611 			data->kek_kck_cmd->gtk_cipher =
612 				cpu_to_le32(STA_KEY_FLG_CCM);
613 		break;
614 	case WLAN_CIPHER_SUITE_GCMP:
615 	case WLAN_CIPHER_SUITE_GCMP_256:
616 		if (!sta)
617 			data->kek_kck_cmd->gtk_cipher =
618 				cpu_to_le32(STA_KEY_FLG_GCMP);
619 		break;
620 	}
621 }
622 
iwl_mvm_send_patterns_v1(struct iwl_mvm * mvm,struct cfg80211_wowlan * wowlan)623 static int iwl_mvm_send_patterns_v1(struct iwl_mvm *mvm,
624 				    struct cfg80211_wowlan *wowlan)
625 {
626 	struct iwl_wowlan_patterns_cmd_v1 *pattern_cmd;
627 	struct iwl_host_cmd cmd = {
628 		.id = WOWLAN_PATTERNS,
629 		.dataflags[0] = IWL_HCMD_DFL_NOCOPY,
630 	};
631 	int i, err;
632 
633 	if (!wowlan->n_patterns)
634 		return 0;
635 
636 	cmd.len[0] = struct_size(pattern_cmd, patterns, wowlan->n_patterns);
637 
638 	pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
639 	if (!pattern_cmd)
640 		return -ENOMEM;
641 
642 	pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
643 
644 	for (i = 0; i < wowlan->n_patterns; i++) {
645 		int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
646 
647 		memcpy(&pattern_cmd->patterns[i].mask,
648 		       wowlan->patterns[i].mask, mask_len);
649 		memcpy(&pattern_cmd->patterns[i].pattern,
650 		       wowlan->patterns[i].pattern,
651 		       wowlan->patterns[i].pattern_len);
652 		pattern_cmd->patterns[i].mask_size = mask_len;
653 		pattern_cmd->patterns[i].pattern_size =
654 			wowlan->patterns[i].pattern_len;
655 	}
656 
657 	cmd.data[0] = pattern_cmd;
658 	err = iwl_mvm_send_cmd(mvm, &cmd);
659 	kfree(pattern_cmd);
660 	return err;
661 }
662 
iwl_mvm_send_patterns(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct cfg80211_wowlan * wowlan)663 static int iwl_mvm_send_patterns(struct iwl_mvm *mvm,
664 				 struct ieee80211_vif *vif,
665 				 struct cfg80211_wowlan *wowlan)
666 {
667 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
668 	struct iwl_wowlan_patterns_cmd *pattern_cmd;
669 	struct iwl_host_cmd cmd = {
670 		.id = WOWLAN_PATTERNS,
671 		.dataflags[0] = IWL_HCMD_DFL_NOCOPY,
672 	};
673 	int i, err;
674 	int ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id,
675 					IWL_FW_CMD_VER_UNKNOWN);
676 
677 	if (!wowlan->n_patterns)
678 		return 0;
679 
680 	cmd.len[0] = sizeof(*pattern_cmd) +
681 		wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern_v2);
682 
683 	pattern_cmd = kzalloc(cmd.len[0], GFP_KERNEL);
684 	if (!pattern_cmd)
685 		return -ENOMEM;
686 
687 	pattern_cmd->n_patterns = wowlan->n_patterns;
688 	if (ver >= 3)
689 		pattern_cmd->sta_id = mvmvif->ap_sta_id;
690 
691 	for (i = 0; i < wowlan->n_patterns; i++) {
692 		int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
693 
694 		pattern_cmd->patterns[i].pattern_type =
695 			WOWLAN_PATTERN_TYPE_BITMASK;
696 
697 		memcpy(&pattern_cmd->patterns[i].u.bitmask.mask,
698 		       wowlan->patterns[i].mask, mask_len);
699 		memcpy(&pattern_cmd->patterns[i].u.bitmask.pattern,
700 		       wowlan->patterns[i].pattern,
701 		       wowlan->patterns[i].pattern_len);
702 		pattern_cmd->patterns[i].u.bitmask.mask_size = mask_len;
703 		pattern_cmd->patterns[i].u.bitmask.pattern_size =
704 			wowlan->patterns[i].pattern_len;
705 	}
706 
707 	cmd.data[0] = pattern_cmd;
708 	err = iwl_mvm_send_cmd(mvm, &cmd);
709 	kfree(pattern_cmd);
710 	return err;
711 }
712 
iwl_mvm_d3_reprogram(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * ap_sta)713 static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
714 				struct ieee80211_sta *ap_sta)
715 {
716 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
717 	struct ieee80211_chanctx_conf *ctx;
718 	u8 chains_static, chains_dynamic;
719 	struct cfg80211_chan_def chandef;
720 	int ret, i;
721 	struct iwl_binding_cmd_v1 binding_cmd = {};
722 	struct iwl_time_quota_cmd quota_cmd = {};
723 	struct iwl_time_quota_data *quota;
724 	u32 status;
725 
726 	if (WARN_ON_ONCE(iwl_mvm_is_cdb_supported(mvm)))
727 		return -EINVAL;
728 
729 	/* add back the PHY */
730 	if (WARN_ON(!mvmvif->phy_ctxt))
731 		return -EINVAL;
732 
733 	rcu_read_lock();
734 	ctx = rcu_dereference(vif->bss_conf.chanctx_conf);
735 	if (WARN_ON(!ctx)) {
736 		rcu_read_unlock();
737 		return -EINVAL;
738 	}
739 	chandef = ctx->def;
740 	chains_static = ctx->rx_chains_static;
741 	chains_dynamic = ctx->rx_chains_dynamic;
742 	rcu_read_unlock();
743 
744 	ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt, &chandef,
745 				   chains_static, chains_dynamic);
746 	if (ret)
747 		return ret;
748 
749 	/* add back the MAC */
750 	mvmvif->uploaded = false;
751 
752 	if (WARN_ON(!vif->cfg.assoc))
753 		return -EINVAL;
754 
755 	ret = iwl_mvm_mac_ctxt_add(mvm, vif);
756 	if (ret)
757 		return ret;
758 
759 	/* add back binding - XXX refactor? */
760 	binding_cmd.id_and_color =
761 		cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
762 						mvmvif->phy_ctxt->color));
763 	binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD);
764 	binding_cmd.phy =
765 		cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
766 						mvmvif->phy_ctxt->color));
767 	binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
768 							      mvmvif->color));
769 	for (i = 1; i < MAX_MACS_IN_BINDING; i++)
770 		binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID);
771 
772 	status = 0;
773 	ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD,
774 					  IWL_BINDING_CMD_SIZE_V1, &binding_cmd,
775 					  &status);
776 	if (ret) {
777 		IWL_ERR(mvm, "Failed to add binding: %d\n", ret);
778 		return ret;
779 	}
780 
781 	if (status) {
782 		IWL_ERR(mvm, "Binding command failed: %u\n", status);
783 		return -EIO;
784 	}
785 
786 	ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false, 0);
787 	if (ret)
788 		return ret;
789 	rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], ap_sta);
790 
791 	ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
792 	if (ret)
793 		return ret;
794 
795 	/* and some quota */
796 	quota = iwl_mvm_quota_cmd_get_quota(mvm, &quota_cmd, 0);
797 	quota->id_and_color =
798 		cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
799 						mvmvif->phy_ctxt->color));
800 	quota->quota = cpu_to_le32(IWL_MVM_MAX_QUOTA);
801 	quota->max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA);
802 
803 	for (i = 1; i < MAX_BINDINGS; i++) {
804 		quota = iwl_mvm_quota_cmd_get_quota(mvm, &quota_cmd, i);
805 		quota->id_and_color = cpu_to_le32(FW_CTXT_INVALID);
806 	}
807 
808 	ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0,
809 				   iwl_mvm_quota_cmd_size(mvm), &quota_cmd);
810 	if (ret)
811 		IWL_ERR(mvm, "Failed to send quota: %d\n", ret);
812 
813 	if (iwl_mvm_is_lar_supported(mvm) && iwl_mvm_init_fw_regd(mvm))
814 		IWL_ERR(mvm, "Failed to initialize D3 LAR information\n");
815 
816 	return 0;
817 }
818 
iwl_mvm_get_last_nonqos_seq(struct iwl_mvm * mvm,struct ieee80211_vif * vif)819 static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm,
820 				       struct ieee80211_vif *vif)
821 {
822 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
823 	struct iwl_nonqos_seq_query_cmd query_cmd = {
824 		.get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET),
825 		.mac_id_n_color =
826 			cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
827 							mvmvif->color)),
828 	};
829 	struct iwl_host_cmd cmd = {
830 		.id = NON_QOS_TX_COUNTER_CMD,
831 		.flags = CMD_WANT_SKB,
832 	};
833 	int err;
834 	u32 size;
835 
836 	cmd.data[0] = &query_cmd;
837 	cmd.len[0] = sizeof(query_cmd);
838 
839 	err = iwl_mvm_send_cmd(mvm, &cmd);
840 	if (err)
841 		return err;
842 
843 	size = iwl_rx_packet_payload_len(cmd.resp_pkt);
844 	if (size < sizeof(__le16)) {
845 		err = -EINVAL;
846 	} else {
847 		err = le16_to_cpup((__le16 *)cmd.resp_pkt->data);
848 		/* firmware returns next, not last-used seqno */
849 		err = (u16) (err - 0x10);
850 	}
851 
852 	iwl_free_resp(&cmd);
853 	return err;
854 }
855 
iwl_mvm_set_last_nonqos_seq(struct iwl_mvm * mvm,struct ieee80211_vif * vif)856 void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
857 {
858 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
859 	struct iwl_nonqos_seq_query_cmd query_cmd = {
860 		.get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET),
861 		.mac_id_n_color =
862 			cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
863 							mvmvif->color)),
864 		.value = cpu_to_le16(mvmvif->seqno),
865 	};
866 
867 	/* return if called during restart, not resume from D3 */
868 	if (!mvmvif->seqno_valid)
869 		return;
870 
871 	mvmvif->seqno_valid = false;
872 
873 	if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0,
874 				 sizeof(query_cmd), &query_cmd))
875 		IWL_ERR(mvm, "failed to set non-QoS seqno\n");
876 }
877 
iwl_mvm_switch_to_d3(struct iwl_mvm * mvm)878 static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm)
879 {
880 	iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
881 
882 	iwl_mvm_stop_device(mvm);
883 	/*
884 	 * Set the HW restart bit -- this is mostly true as we're
885 	 * going to load new firmware and reprogram that, though
886 	 * the reprogramming is going to be manual to avoid adding
887 	 * all the MACs that aren't support.
888 	 * We don't have to clear up everything though because the
889 	 * reprogramming is manual. When we resume, we'll actually
890 	 * go through a proper restart sequence again to switch
891 	 * back to the runtime firmware image.
892 	 */
893 	set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
894 
895 	/* the fw is reset, so all the keys are cleared */
896 	memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
897 
898 	mvm->ptk_ivlen = 0;
899 	mvm->ptk_icvlen = 0;
900 	mvm->ptk_ivlen = 0;
901 	mvm->ptk_icvlen = 0;
902 
903 	return iwl_mvm_load_d3_fw(mvm);
904 }
905 
906 static int
iwl_mvm_get_wowlan_config(struct iwl_mvm * mvm,struct cfg80211_wowlan * wowlan,struct iwl_wowlan_config_cmd * wowlan_config_cmd,struct ieee80211_vif * vif,struct iwl_mvm_vif * mvmvif,struct ieee80211_sta * ap_sta)907 iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm,
908 			  struct cfg80211_wowlan *wowlan,
909 			  struct iwl_wowlan_config_cmd *wowlan_config_cmd,
910 			  struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
911 			  struct ieee80211_sta *ap_sta)
912 {
913 	struct iwl_mvm_sta *mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
914 
915 	/* TODO: wowlan_config_cmd->wowlan_ba_teardown_tids */
916 
917 	wowlan_config_cmd->is_11n_connection =
918 					ap_sta->deflink.ht_cap.ht_supported;
919 	wowlan_config_cmd->flags = ENABLE_L3_FILTERING |
920 		ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING;
921 
922 	if (iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_CONFIGURATION, 0) < 6) {
923 		/* Query the last used seqno and set it */
924 		int ret = iwl_mvm_get_last_nonqos_seq(mvm, vif);
925 
926 		if (ret < 0)
927 			return ret;
928 
929 		wowlan_config_cmd->non_qos_seq = cpu_to_le16(ret);
930 	}
931 
932 	iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, wowlan_config_cmd);
933 
934 	if (wowlan->disconnect)
935 		wowlan_config_cmd->wakeup_filter |=
936 			cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
937 				    IWL_WOWLAN_WAKEUP_LINK_CHANGE);
938 	if (wowlan->magic_pkt)
939 		wowlan_config_cmd->wakeup_filter |=
940 			cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET);
941 	if (wowlan->gtk_rekey_failure)
942 		wowlan_config_cmd->wakeup_filter |=
943 			cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
944 	if (wowlan->eap_identity_req)
945 		wowlan_config_cmd->wakeup_filter |=
946 			cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ);
947 	if (wowlan->four_way_handshake)
948 		wowlan_config_cmd->wakeup_filter |=
949 			cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
950 	if (wowlan->n_patterns)
951 		wowlan_config_cmd->wakeup_filter |=
952 			cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH);
953 
954 	if (wowlan->rfkill_release)
955 		wowlan_config_cmd->wakeup_filter |=
956 			cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
957 
958 	if (wowlan->tcp) {
959 		/*
960 		 * Set the "link change" (really "link lost") flag as well
961 		 * since that implies losing the TCP connection.
962 		 */
963 		wowlan_config_cmd->wakeup_filter |=
964 			cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS |
965 				    IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE |
966 				    IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET |
967 				    IWL_WOWLAN_WAKEUP_LINK_CHANGE);
968 	}
969 
970 	if (wowlan->any) {
971 		wowlan_config_cmd->wakeup_filter |=
972 			cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
973 				    IWL_WOWLAN_WAKEUP_LINK_CHANGE |
974 				    IWL_WOWLAN_WAKEUP_RX_FRAME |
975 				    IWL_WOWLAN_WAKEUP_BCN_FILTERING);
976 	}
977 
978 	return 0;
979 }
980 
iwl_mvm_wowlan_config_key_params(struct iwl_mvm * mvm,struct ieee80211_vif * vif)981 static int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm,
982 					    struct ieee80211_vif *vif)
983 {
984 	bool unified = fw_has_capa(&mvm->fw->ucode_capa,
985 				   IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
986 	struct wowlan_key_reprogram_data key_data = {};
987 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
988 	int ret;
989 	u8 cmd_ver;
990 	size_t cmd_size;
991 
992 	if (!unified) {
993 		/*
994 		 * if we have to configure keys, call ieee80211_iter_keys(),
995 		 * as we need non-atomic context in order to take the
996 		 * required locks.
997 		 */
998 		/*
999 		 * Note that currently we don't use CMD_ASYNC in the iterator.
1000 		 * In case of key_data.configure_keys, all the configured
1001 		 * commands are SYNC, and iwl_mvm_wowlan_program_keys() will
1002 		 * take care of locking/unlocking mvm->mutex.
1003 		 */
1004 		ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_program_keys,
1005 				    &key_data);
1006 
1007 		if (key_data.error)
1008 			return -EIO;
1009 	}
1010 
1011 	ret = iwl_mvm_wowlan_config_rsc_tsc(mvm, vif);
1012 	if (ret)
1013 		return ret;
1014 
1015 	if (!fw_has_api(&mvm->fw->ucode_capa,
1016 			IWL_UCODE_TLV_API_TKIP_MIC_KEYS)) {
1017 		int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TKIP_PARAM,
1018 						IWL_FW_CMD_VER_UNKNOWN);
1019 		struct wowlan_key_tkip_data tkip_data = {};
1020 		int size;
1021 
1022 		if (ver == 2) {
1023 			size = sizeof(tkip_data.tkip);
1024 			tkip_data.tkip.sta_id =
1025 				cpu_to_le32(mvmvif->ap_sta_id);
1026 		} else if (ver == 1 || ver == IWL_FW_CMD_VER_UNKNOWN) {
1027 			size = sizeof(struct iwl_wowlan_tkip_params_cmd_ver_1);
1028 		} else {
1029 			WARN_ON_ONCE(1);
1030 			return -EINVAL;
1031 		}
1032 
1033 		ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_get_tkip_data,
1034 				    &tkip_data);
1035 
1036 		if (tkip_data.have_tkip_keys) {
1037 			/* send relevant data according to CMD version */
1038 			ret = iwl_mvm_send_cmd_pdu(mvm,
1039 						   WOWLAN_TKIP_PARAM,
1040 						   CMD_ASYNC, size,
1041 						   &tkip_data.tkip);
1042 			if (ret)
1043 				return ret;
1044 		}
1045 	}
1046 
1047 	/* configure rekey data only if offloaded rekey is supported (d3) */
1048 	if (mvmvif->rekey_data.valid) {
1049 		struct iwl_wowlan_kek_kck_material_cmd_v4 kek_kck_cmd = {};
1050 		struct iwl_wowlan_kek_kck_material_cmd_v4 *_kek_kck_cmd =
1051 			&kek_kck_cmd;
1052 		struct wowlan_key_gtk_type_iter gtk_type_data = {
1053 			.kek_kck_cmd = _kek_kck_cmd,
1054 		};
1055 
1056 		cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,
1057 						WOWLAN_KEK_KCK_MATERIAL,
1058 						IWL_FW_CMD_VER_UNKNOWN);
1059 		if (WARN_ON(cmd_ver != 2 && cmd_ver != 3 && cmd_ver != 4 &&
1060 			    cmd_ver != IWL_FW_CMD_VER_UNKNOWN))
1061 			return -EINVAL;
1062 
1063 		ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_gtk_type_iter,
1064 				    &gtk_type_data);
1065 
1066 		memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck,
1067 		       mvmvif->rekey_data.kck_len);
1068 		kek_kck_cmd.kck_len = cpu_to_le16(mvmvif->rekey_data.kck_len);
1069 		memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek,
1070 		       mvmvif->rekey_data.kek_len);
1071 		kek_kck_cmd.kek_len = cpu_to_le16(mvmvif->rekey_data.kek_len);
1072 		kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr;
1073 		kek_kck_cmd.akm = cpu_to_le32(mvmvif->rekey_data.akm);
1074 		kek_kck_cmd.sta_id = cpu_to_le32(mvmvif->ap_sta_id);
1075 
1076 		if (cmd_ver == 4) {
1077 			cmd_size = sizeof(struct iwl_wowlan_kek_kck_material_cmd_v4);
1078 		} else {
1079 			if (cmd_ver == 3)
1080 				cmd_size =
1081 					sizeof(struct iwl_wowlan_kek_kck_material_cmd_v3);
1082 			else
1083 				cmd_size =
1084 					sizeof(struct iwl_wowlan_kek_kck_material_cmd_v2);
1085 			/* skip the sta_id at the beginning */
1086 			_kek_kck_cmd = (void *)
1087 				((u8 *)_kek_kck_cmd + sizeof(kek_kck_cmd.sta_id));
1088 		}
1089 
1090 		IWL_DEBUG_WOWLAN(mvm, "setting akm %d\n",
1091 				 mvmvif->rekey_data.akm);
1092 
1093 		ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_KEK_KCK_MATERIAL,
1094 					   CMD_ASYNC, cmd_size, _kek_kck_cmd);
1095 		if (ret)
1096 			return ret;
1097 	}
1098 
1099 	return 0;
1100 }
1101 
1102 static int
iwl_mvm_wowlan_config(struct iwl_mvm * mvm,struct cfg80211_wowlan * wowlan,struct iwl_wowlan_config_cmd * wowlan_config_cmd,struct ieee80211_vif * vif,struct iwl_mvm_vif * mvmvif,struct ieee80211_sta * ap_sta)1103 iwl_mvm_wowlan_config(struct iwl_mvm *mvm,
1104 		      struct cfg80211_wowlan *wowlan,
1105 		      struct iwl_wowlan_config_cmd *wowlan_config_cmd,
1106 		      struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
1107 		      struct ieee80211_sta *ap_sta)
1108 {
1109 	int ret;
1110 	bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1111 					 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1112 
1113 	mvm->offload_tid = wowlan_config_cmd->offloading_tid;
1114 
1115 	if (!unified_image) {
1116 		ret = iwl_mvm_switch_to_d3(mvm);
1117 		if (ret)
1118 			return ret;
1119 
1120 		ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta);
1121 		if (ret)
1122 			return ret;
1123 	}
1124 
1125 	/*
1126 	 * This needs to be unlocked due to lock ordering
1127 	 * constraints. Since we're in the suspend path
1128 	 * that isn't really a problem though.
1129 	 */
1130 	mutex_unlock(&mvm->mutex);
1131 	ret = iwl_mvm_wowlan_config_key_params(mvm, vif);
1132 	mutex_lock(&mvm->mutex);
1133 	if (ret)
1134 		return ret;
1135 
1136 	ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0,
1137 				   sizeof(*wowlan_config_cmd),
1138 				   wowlan_config_cmd);
1139 	if (ret)
1140 		return ret;
1141 
1142 	if (fw_has_api(&mvm->fw->ucode_capa,
1143 		       IWL_UCODE_TLV_API_WOWLAN_TCP_SYN_WAKE))
1144 		ret = iwl_mvm_send_patterns(mvm, vif, wowlan);
1145 	else
1146 		ret = iwl_mvm_send_patterns_v1(mvm, wowlan);
1147 	if (ret)
1148 		return ret;
1149 
1150 	return iwl_mvm_send_proto_offload(mvm, vif, false, true, 0);
1151 }
1152 
1153 static int
iwl_mvm_netdetect_config(struct iwl_mvm * mvm,struct cfg80211_wowlan * wowlan,struct cfg80211_sched_scan_request * nd_config,struct ieee80211_vif * vif)1154 iwl_mvm_netdetect_config(struct iwl_mvm *mvm,
1155 			 struct cfg80211_wowlan *wowlan,
1156 			 struct cfg80211_sched_scan_request *nd_config,
1157 			 struct ieee80211_vif *vif)
1158 {
1159 	int ret;
1160 	bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1161 					 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1162 
1163 	if (!unified_image) {
1164 		ret = iwl_mvm_switch_to_d3(mvm);
1165 		if (ret)
1166 			return ret;
1167 	} else {
1168 		/* In theory, we wouldn't have to stop a running sched
1169 		 * scan in order to start another one (for
1170 		 * net-detect).  But in practice this doesn't seem to
1171 		 * work properly, so stop any running sched_scan now.
1172 		 */
1173 		ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
1174 		if (ret)
1175 			return ret;
1176 	}
1177 
1178 	ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies,
1179 				       IWL_MVM_SCAN_NETDETECT);
1180 	if (ret)
1181 		return ret;
1182 
1183 	if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels))
1184 		return -EBUSY;
1185 
1186 	/* save the sched scan matchsets... */
1187 	if (nd_config->n_match_sets) {
1188 		mvm->nd_match_sets = kmemdup(nd_config->match_sets,
1189 					     sizeof(*nd_config->match_sets) *
1190 					     nd_config->n_match_sets,
1191 					     GFP_KERNEL);
1192 		if (mvm->nd_match_sets)
1193 			mvm->n_nd_match_sets = nd_config->n_match_sets;
1194 	}
1195 
1196 	/* ...and the sched scan channels for later reporting */
1197 	mvm->nd_channels = kmemdup(nd_config->channels,
1198 				   sizeof(*nd_config->channels) *
1199 				   nd_config->n_channels,
1200 				   GFP_KERNEL);
1201 	if (mvm->nd_channels)
1202 		mvm->n_nd_channels = nd_config->n_channels;
1203 
1204 	return 0;
1205 }
1206 
iwl_mvm_free_nd(struct iwl_mvm * mvm)1207 static void iwl_mvm_free_nd(struct iwl_mvm *mvm)
1208 {
1209 	kfree(mvm->nd_match_sets);
1210 	mvm->nd_match_sets = NULL;
1211 	mvm->n_nd_match_sets = 0;
1212 	kfree(mvm->nd_channels);
1213 	mvm->nd_channels = NULL;
1214 	mvm->n_nd_channels = 0;
1215 }
1216 
__iwl_mvm_suspend(struct ieee80211_hw * hw,struct cfg80211_wowlan * wowlan,bool test)1217 static int __iwl_mvm_suspend(struct ieee80211_hw *hw,
1218 			     struct cfg80211_wowlan *wowlan,
1219 			     bool test)
1220 {
1221 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1222 	struct ieee80211_vif *vif = NULL;
1223 	struct iwl_mvm_vif *mvmvif = NULL;
1224 	struct ieee80211_sta *ap_sta = NULL;
1225 	struct iwl_d3_manager_config d3_cfg_cmd_data = {
1226 		/*
1227 		 * Program the minimum sleep time to 10 seconds, as many
1228 		 * platforms have issues processing a wakeup signal while
1229 		 * still being in the process of suspending.
1230 		 */
1231 		.min_sleep_time = cpu_to_le32(10 * 1000 * 1000),
1232 	};
1233 	struct iwl_host_cmd d3_cfg_cmd = {
1234 		.id = D3_CONFIG_CMD,
1235 		.flags = CMD_WANT_SKB | CMD_SEND_IN_D3,
1236 		.data[0] = &d3_cfg_cmd_data,
1237 		.len[0] = sizeof(d3_cfg_cmd_data),
1238 	};
1239 	int ret;
1240 	int len __maybe_unused;
1241 	bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1242 					 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1243 
1244 	if (!wowlan) {
1245 		/*
1246 		 * mac80211 shouldn't get here, but for D3 test
1247 		 * it doesn't warrant a warning
1248 		 */
1249 		WARN_ON(!test);
1250 		return -EINVAL;
1251 	}
1252 
1253 	mutex_lock(&mvm->mutex);
1254 
1255 	set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
1256 
1257 	synchronize_net();
1258 
1259 	vif = iwl_mvm_get_bss_vif(mvm);
1260 	if (IS_ERR_OR_NULL(vif)) {
1261 		ret = 1;
1262 		goto out_noreset;
1263 	}
1264 
1265 	mvmvif = iwl_mvm_vif_from_mac80211(vif);
1266 
1267 	if (mvmvif->ap_sta_id == IWL_MVM_INVALID_STA) {
1268 		/* if we're not associated, this must be netdetect */
1269 		if (!wowlan->nd_config) {
1270 			ret = 1;
1271 			goto out_noreset;
1272 		}
1273 
1274 		ret = iwl_mvm_netdetect_config(
1275 			mvm, wowlan, wowlan->nd_config, vif);
1276 		if (ret)
1277 			goto out;
1278 
1279 		mvm->net_detect = true;
1280 	} else {
1281 		struct iwl_wowlan_config_cmd wowlan_config_cmd = {};
1282 
1283 		wowlan_config_cmd.sta_id = mvmvif->ap_sta_id;
1284 
1285 		ap_sta = rcu_dereference_protected(
1286 			mvm->fw_id_to_mac_id[mvmvif->ap_sta_id],
1287 			lockdep_is_held(&mvm->mutex));
1288 		if (IS_ERR_OR_NULL(ap_sta)) {
1289 			ret = -EINVAL;
1290 			goto out_noreset;
1291 		}
1292 
1293 		ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1294 						vif, mvmvif, ap_sta);
1295 		if (ret)
1296 			goto out_noreset;
1297 		ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1298 					    vif, mvmvif, ap_sta);
1299 		if (ret)
1300 			goto out;
1301 
1302 		mvm->net_detect = false;
1303 	}
1304 
1305 	ret = iwl_mvm_power_update_device(mvm);
1306 	if (ret)
1307 		goto out;
1308 
1309 	ret = iwl_mvm_power_update_mac(mvm);
1310 	if (ret)
1311 		goto out;
1312 
1313 #ifdef CONFIG_IWLWIFI_DEBUGFS
1314 	if (mvm->d3_wake_sysassert)
1315 		d3_cfg_cmd_data.wakeup_flags |=
1316 			cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR);
1317 #endif
1318 
1319 	/*
1320 	 * Prior to 9000 device family the driver needs to stop the dbg
1321 	 * recording before entering D3. In later devices the FW stops the
1322 	 * recording automatically.
1323 	 */
1324 	if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_9000)
1325 		iwl_fw_dbg_stop_restart_recording(&mvm->fwrt, NULL, true);
1326 
1327 	mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_D3;
1328 
1329 	/* must be last -- this switches firmware state */
1330 	ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd);
1331 	if (ret)
1332 		goto out;
1333 #ifdef CONFIG_IWLWIFI_DEBUGFS
1334 	len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt);
1335 	if (len >= sizeof(u32)) {
1336 		mvm->d3_test_pme_ptr =
1337 			le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data);
1338 	}
1339 #endif
1340 	iwl_free_resp(&d3_cfg_cmd);
1341 
1342 	clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1343 
1344 	ret = iwl_trans_d3_suspend(mvm->trans, test, !unified_image);
1345  out:
1346 	if (ret < 0) {
1347 		iwl_mvm_free_nd(mvm);
1348 
1349 		if (!unified_image) {
1350 			if (mvm->fw_restart > 0) {
1351 				mvm->fw_restart--;
1352 				ieee80211_restart_hw(mvm->hw);
1353 			}
1354 		}
1355 
1356 		clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
1357 	}
1358  out_noreset:
1359 	mutex_unlock(&mvm->mutex);
1360 
1361 	return ret;
1362 }
1363 
iwl_mvm_suspend(struct ieee80211_hw * hw,struct cfg80211_wowlan * wowlan)1364 int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
1365 {
1366 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1367 
1368 	iwl_mvm_pause_tcm(mvm, true);
1369 
1370 	iwl_fw_runtime_suspend(&mvm->fwrt);
1371 
1372 	return __iwl_mvm_suspend(hw, wowlan, false);
1373 }
1374 
1375 /* converted data from the different status responses */
1376 struct iwl_wowlan_status_data {
1377 	u64 replay_ctr;
1378 	u32 num_of_gtk_rekeys;
1379 	u32 received_beacons;
1380 	u32 wakeup_reasons;
1381 	u32 wake_packet_length;
1382 	u32 wake_packet_bufsize;
1383 	u16 pattern_number;
1384 	u16 non_qos_seq_ctr;
1385 	u16 qos_seq_ctr[8];
1386 	u8 tid_tear_down;
1387 
1388 	struct {
1389 		/* including RX MIC key for TKIP */
1390 		u8 key[WOWLAN_KEY_MAX_SIZE];
1391 		u8 len;
1392 		u8 flags;
1393 	} gtk;
1394 
1395 	struct {
1396 		/*
1397 		 * We store both the TKIP and AES representations
1398 		 * coming from the firmware because we decode the
1399 		 * data from there before we iterate the keys and
1400 		 * know which one we need.
1401 		 */
1402 		struct {
1403 			struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT];
1404 		} tkip, aes;
1405 
1406 		/*
1407 		 * We use -1 for when we have valid data but don't know
1408 		 * the key ID from firmware, and thus it needs to be
1409 		 * installed with the last key (depending on rekeying).
1410 		 */
1411 		s8 key_id;
1412 		bool valid;
1413 	} gtk_seq[2];
1414 
1415 	struct {
1416 		/* Same as above */
1417 		struct {
1418 			struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT];
1419 			u64 tx_pn;
1420 		} tkip, aes;
1421 	} ptk;
1422 
1423 	struct {
1424 		u64 ipn;
1425 		u8 key[WOWLAN_KEY_MAX_SIZE];
1426 		u8 len;
1427 		u8 flags;
1428 	} igtk;
1429 
1430 	u8 *wake_packet;
1431 };
1432 
iwl_mvm_report_wakeup_reasons(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_wowlan_status_data * status)1433 static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm,
1434 					  struct ieee80211_vif *vif,
1435 					  struct iwl_wowlan_status_data *status)
1436 {
1437 	struct sk_buff *pkt = NULL;
1438 	struct cfg80211_wowlan_wakeup wakeup = {
1439 		.pattern_idx = -1,
1440 	};
1441 	struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
1442 	u32 reasons = status->wakeup_reasons;
1443 
1444 	if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
1445 		wakeup_report = NULL;
1446 		goto report;
1447 	}
1448 
1449 	pm_wakeup_event(mvm->dev, 0);
1450 
1451 	if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET)
1452 		wakeup.magic_pkt = true;
1453 
1454 	if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN)
1455 		wakeup.pattern_idx =
1456 			status->pattern_number;
1457 
1458 	if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1459 		       IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH))
1460 		wakeup.disconnect = true;
1461 
1462 	if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)
1463 		wakeup.gtk_rekey_failure = true;
1464 
1465 	if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
1466 		wakeup.rfkill_release = true;
1467 
1468 	if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST)
1469 		wakeup.eap_identity_req = true;
1470 
1471 	if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE)
1472 		wakeup.four_way_handshake = true;
1473 
1474 	if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS)
1475 		wakeup.tcp_connlost = true;
1476 
1477 	if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE)
1478 		wakeup.tcp_nomoretokens = true;
1479 
1480 	if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET)
1481 		wakeup.tcp_match = true;
1482 
1483 	if (status->wake_packet) {
1484 		int pktsize = status->wake_packet_bufsize;
1485 		int pktlen = status->wake_packet_length;
1486 		const u8 *pktdata = status->wake_packet;
1487 		const struct ieee80211_hdr *hdr = (const void *)pktdata;
1488 		int truncated = pktlen - pktsize;
1489 
1490 		/* this would be a firmware bug */
1491 		if (WARN_ON_ONCE(truncated < 0))
1492 			truncated = 0;
1493 
1494 		if (ieee80211_is_data(hdr->frame_control)) {
1495 			int hdrlen = ieee80211_hdrlen(hdr->frame_control);
1496 			int ivlen = 0, icvlen = 4; /* also FCS */
1497 
1498 			pkt = alloc_skb(pktsize, GFP_KERNEL);
1499 			if (!pkt)
1500 				goto report;
1501 
1502 			skb_put_data(pkt, pktdata, hdrlen);
1503 			pktdata += hdrlen;
1504 			pktsize -= hdrlen;
1505 
1506 			if (ieee80211_has_protected(hdr->frame_control)) {
1507 				/*
1508 				 * This is unlocked and using gtk_i(c)vlen,
1509 				 * but since everything is under RTNL still
1510 				 * that's not really a problem - changing
1511 				 * it would be difficult.
1512 				 */
1513 				if (is_multicast_ether_addr(hdr->addr1)) {
1514 					ivlen = mvm->gtk_ivlen;
1515 					icvlen += mvm->gtk_icvlen;
1516 				} else {
1517 					ivlen = mvm->ptk_ivlen;
1518 					icvlen += mvm->ptk_icvlen;
1519 				}
1520 			}
1521 
1522 			/* if truncated, FCS/ICV is (partially) gone */
1523 			if (truncated >= icvlen) {
1524 				icvlen = 0;
1525 				truncated -= icvlen;
1526 			} else {
1527 				icvlen -= truncated;
1528 				truncated = 0;
1529 			}
1530 
1531 			pktsize -= ivlen + icvlen;
1532 			pktdata += ivlen;
1533 
1534 			skb_put_data(pkt, pktdata, pktsize);
1535 
1536 			if (ieee80211_data_to_8023(pkt, vif->addr, vif->type))
1537 				goto report;
1538 			wakeup.packet = pkt->data;
1539 			wakeup.packet_present_len = pkt->len;
1540 			wakeup.packet_len = pkt->len - truncated;
1541 			wakeup.packet_80211 = false;
1542 		} else {
1543 			int fcslen = 4;
1544 
1545 			if (truncated >= 4) {
1546 				truncated -= 4;
1547 				fcslen = 0;
1548 			} else {
1549 				fcslen -= truncated;
1550 				truncated = 0;
1551 			}
1552 			pktsize -= fcslen;
1553 			wakeup.packet = status->wake_packet;
1554 			wakeup.packet_present_len = pktsize;
1555 			wakeup.packet_len = pktlen - truncated;
1556 			wakeup.packet_80211 = true;
1557 		}
1558 	}
1559 
1560  report:
1561 	ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
1562 	kfree_skb(pkt);
1563 }
1564 
iwl_mvm_le64_to_aes_seq(__le64 le_pn,struct ieee80211_key_seq * seq)1565 static void iwl_mvm_le64_to_aes_seq(__le64 le_pn, struct ieee80211_key_seq *seq)
1566 {
1567 	u64 pn = le64_to_cpu(le_pn);
1568 
1569 	seq->ccmp.pn[0] = pn >> 40;
1570 	seq->ccmp.pn[1] = pn >> 32;
1571 	seq->ccmp.pn[2] = pn >> 24;
1572 	seq->ccmp.pn[3] = pn >> 16;
1573 	seq->ccmp.pn[4] = pn >> 8;
1574 	seq->ccmp.pn[5] = pn;
1575 }
1576 
iwl_mvm_aes_sc_to_seq(struct aes_sc * sc,struct ieee80211_key_seq * seq)1577 static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc,
1578 				  struct ieee80211_key_seq *seq)
1579 {
1580 	iwl_mvm_le64_to_aes_seq(sc->pn, seq);
1581 }
1582 
iwl_mvm_le64_to_tkip_seq(__le64 le_pn,struct ieee80211_key_seq * seq)1583 static void iwl_mvm_le64_to_tkip_seq(__le64 le_pn, struct ieee80211_key_seq *seq)
1584 {
1585 	u64 pn = le64_to_cpu(le_pn);
1586 
1587 	seq->tkip.iv16 = (u16)pn;
1588 	seq->tkip.iv32 = (u32)(pn >> 16);
1589 }
1590 
iwl_mvm_tkip_sc_to_seq(struct tkip_sc * sc,struct ieee80211_key_seq * seq)1591 static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc,
1592 				   struct ieee80211_key_seq *seq)
1593 {
1594 	seq->tkip.iv32 = le32_to_cpu(sc->iv32);
1595 	seq->tkip.iv16 = le16_to_cpu(sc->iv16);
1596 }
1597 
iwl_mvm_set_key_rx_seq_tids(struct ieee80211_key_conf * key,struct ieee80211_key_seq * seq)1598 static void iwl_mvm_set_key_rx_seq_tids(struct ieee80211_key_conf *key,
1599 					struct ieee80211_key_seq *seq)
1600 {
1601 	int tid;
1602 
1603 	for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++)
1604 		ieee80211_set_key_rx_seq(key, tid, &seq[tid]);
1605 }
1606 
iwl_mvm_set_aes_ptk_rx_seq(struct iwl_mvm * mvm,struct iwl_wowlan_status_data * status,struct ieee80211_sta * sta,struct ieee80211_key_conf * key)1607 static void iwl_mvm_set_aes_ptk_rx_seq(struct iwl_mvm *mvm,
1608 				       struct iwl_wowlan_status_data *status,
1609 				       struct ieee80211_sta *sta,
1610 				       struct ieee80211_key_conf *key)
1611 {
1612 	struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1613 	struct iwl_mvm_key_pn *ptk_pn;
1614 	int tid;
1615 
1616 	iwl_mvm_set_key_rx_seq_tids(key, status->ptk.aes.seq);
1617 
1618 	if (!iwl_mvm_has_new_rx_api(mvm))
1619 		return;
1620 
1621 
1622 	rcu_read_lock();
1623 	ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]);
1624 	if (WARN_ON(!ptk_pn)) {
1625 		rcu_read_unlock();
1626 		return;
1627 	}
1628 
1629 	for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1630 		int i;
1631 
1632 		for (i = 1; i < mvm->trans->num_rx_queues; i++)
1633 			memcpy(ptk_pn->q[i].pn[tid],
1634 			       status->ptk.aes.seq[tid].ccmp.pn,
1635 			       IEEE80211_CCMP_PN_LEN);
1636 	}
1637 	rcu_read_unlock();
1638 }
1639 
iwl_mvm_convert_key_counters(struct iwl_wowlan_status_data * status,union iwl_all_tsc_rsc * sc)1640 static void iwl_mvm_convert_key_counters(struct iwl_wowlan_status_data *status,
1641 					 union iwl_all_tsc_rsc *sc)
1642 {
1643 	int i;
1644 
1645 	BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT);
1646 	BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC);
1647 
1648 	/* GTK RX counters */
1649 	for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1650 		iwl_mvm_tkip_sc_to_seq(&sc->tkip.multicast_rsc[i],
1651 				       &status->gtk_seq[0].tkip.seq[i]);
1652 		iwl_mvm_aes_sc_to_seq(&sc->aes.multicast_rsc[i],
1653 				      &status->gtk_seq[0].aes.seq[i]);
1654 	}
1655 	status->gtk_seq[0].valid = true;
1656 	status->gtk_seq[0].key_id = -1;
1657 
1658 	/* PTK TX counter */
1659 	status->ptk.tkip.tx_pn = (u64)le16_to_cpu(sc->tkip.tsc.iv16) |
1660 				 ((u64)le32_to_cpu(sc->tkip.tsc.iv32) << 16);
1661 	status->ptk.aes.tx_pn = le64_to_cpu(sc->aes.tsc.pn);
1662 
1663 	/* PTK RX counters */
1664 	for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1665 		iwl_mvm_tkip_sc_to_seq(&sc->tkip.unicast_rsc[i],
1666 				       &status->ptk.tkip.seq[i]);
1667 		iwl_mvm_aes_sc_to_seq(&sc->aes.unicast_rsc[i],
1668 				      &status->ptk.aes.seq[i]);
1669 	}
1670 }
1671 
1672 static void
iwl_mvm_convert_key_counters_v5_gtk_seq(struct iwl_wowlan_status_data * status,struct iwl_wowlan_all_rsc_tsc_v5 * sc,unsigned int idx,unsigned int key_id)1673 iwl_mvm_convert_key_counters_v5_gtk_seq(struct iwl_wowlan_status_data *status,
1674 					struct iwl_wowlan_all_rsc_tsc_v5 *sc,
1675 					unsigned int idx, unsigned int key_id)
1676 {
1677 	int tid;
1678 
1679 	for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1680 		iwl_mvm_le64_to_tkip_seq(sc->mcast_rsc[idx][tid],
1681 					 &status->gtk_seq[idx].tkip.seq[tid]);
1682 		iwl_mvm_le64_to_aes_seq(sc->mcast_rsc[idx][tid],
1683 					&status->gtk_seq[idx].aes.seq[tid]);
1684 	}
1685 
1686 	status->gtk_seq[idx].valid = true;
1687 	status->gtk_seq[idx].key_id = key_id;
1688 }
1689 
1690 static void
iwl_mvm_convert_key_counters_v5(struct iwl_wowlan_status_data * status,struct iwl_wowlan_all_rsc_tsc_v5 * sc)1691 iwl_mvm_convert_key_counters_v5(struct iwl_wowlan_status_data *status,
1692 				struct iwl_wowlan_all_rsc_tsc_v5 *sc)
1693 {
1694 	int i, tid;
1695 
1696 	BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT);
1697 	BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC);
1698 	BUILD_BUG_ON(ARRAY_SIZE(sc->mcast_rsc) != ARRAY_SIZE(status->gtk_seq));
1699 
1700 	/* GTK RX counters */
1701 	for (i = 0; i < ARRAY_SIZE(sc->mcast_key_id_map); i++) {
1702 		u8 entry = sc->mcast_key_id_map[i];
1703 
1704 		if (entry < ARRAY_SIZE(sc->mcast_rsc))
1705 			iwl_mvm_convert_key_counters_v5_gtk_seq(status, sc,
1706 								entry, i);
1707 	}
1708 
1709 	/* PTK TX counters not needed, assigned in device */
1710 
1711 	/* PTK RX counters */
1712 	for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1713 		iwl_mvm_le64_to_tkip_seq(sc->ucast_rsc[tid],
1714 					 &status->ptk.tkip.seq[tid]);
1715 		iwl_mvm_le64_to_aes_seq(sc->ucast_rsc[tid],
1716 					&status->ptk.aes.seq[tid]);
1717 	}
1718 }
1719 
iwl_mvm_set_key_rx_seq_idx(struct ieee80211_key_conf * key,struct iwl_wowlan_status_data * status,int idx)1720 static void iwl_mvm_set_key_rx_seq_idx(struct ieee80211_key_conf *key,
1721 				       struct iwl_wowlan_status_data *status,
1722 				       int idx)
1723 {
1724 	switch (key->cipher) {
1725 	case WLAN_CIPHER_SUITE_CCMP:
1726 	case WLAN_CIPHER_SUITE_GCMP:
1727 	case WLAN_CIPHER_SUITE_GCMP_256:
1728 		iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].aes.seq);
1729 		break;
1730 	case WLAN_CIPHER_SUITE_TKIP:
1731 		iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].tkip.seq);
1732 		break;
1733 	default:
1734 		WARN_ON(1);
1735 	}
1736 }
1737 
iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf * key,struct iwl_wowlan_status_data * status,bool installed)1738 static void iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf *key,
1739 				   struct iwl_wowlan_status_data *status,
1740 				   bool installed)
1741 {
1742 	int i;
1743 
1744 	for (i = 0; i < ARRAY_SIZE(status->gtk_seq); i++) {
1745 		if (!status->gtk_seq[i].valid)
1746 			continue;
1747 
1748 		/* Handle the case where we know the key ID */
1749 		if (status->gtk_seq[i].key_id == key->keyidx) {
1750 			s8 new_key_id = -1;
1751 
1752 			if (status->num_of_gtk_rekeys)
1753 				new_key_id = status->gtk.flags &
1754 						IWL_WOWLAN_GTK_IDX_MASK;
1755 
1756 			/* Don't install a new key's value to an old key */
1757 			if (new_key_id != key->keyidx)
1758 				iwl_mvm_set_key_rx_seq_idx(key, status, i);
1759 			continue;
1760 		}
1761 
1762 		/* handle the case where we didn't, last key only */
1763 		if (status->gtk_seq[i].key_id == -1 &&
1764 		    (!status->num_of_gtk_rekeys || installed))
1765 			iwl_mvm_set_key_rx_seq_idx(key, status, i);
1766 	}
1767 }
1768 
1769 struct iwl_mvm_d3_gtk_iter_data {
1770 	struct iwl_mvm *mvm;
1771 	struct iwl_wowlan_status_data *status;
1772 	void *last_gtk;
1773 	u32 cipher;
1774 	bool find_phase, unhandled_cipher;
1775 	int num_keys;
1776 };
1777 
iwl_mvm_d3_update_keys(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key,void * _data)1778 static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw,
1779 				   struct ieee80211_vif *vif,
1780 				   struct ieee80211_sta *sta,
1781 				   struct ieee80211_key_conf *key,
1782 				   void *_data)
1783 {
1784 	struct iwl_mvm_d3_gtk_iter_data *data = _data;
1785 	struct iwl_wowlan_status_data *status = data->status;
1786 
1787 	if (data->unhandled_cipher)
1788 		return;
1789 
1790 	switch (key->cipher) {
1791 	case WLAN_CIPHER_SUITE_WEP40:
1792 	case WLAN_CIPHER_SUITE_WEP104:
1793 		/* ignore WEP completely, nothing to do */
1794 		return;
1795 	case WLAN_CIPHER_SUITE_CCMP:
1796 	case WLAN_CIPHER_SUITE_GCMP:
1797 	case WLAN_CIPHER_SUITE_GCMP_256:
1798 	case WLAN_CIPHER_SUITE_TKIP:
1799 		/* we support these */
1800 		break;
1801 	default:
1802 		/* everything else (even CMAC for MFP) - disconnect from AP */
1803 		data->unhandled_cipher = true;
1804 		return;
1805 	}
1806 
1807 	data->num_keys++;
1808 
1809 	/*
1810 	 * pairwise key - update sequence counters only;
1811 	 * note that this assumes no TDLS sessions are active
1812 	 */
1813 	if (sta) {
1814 		if (data->find_phase)
1815 			return;
1816 
1817 		switch (key->cipher) {
1818 		case WLAN_CIPHER_SUITE_CCMP:
1819 		case WLAN_CIPHER_SUITE_GCMP:
1820 		case WLAN_CIPHER_SUITE_GCMP_256:
1821 			atomic64_set(&key->tx_pn, status->ptk.aes.tx_pn);
1822 			iwl_mvm_set_aes_ptk_rx_seq(data->mvm, status, sta, key);
1823 			break;
1824 		case WLAN_CIPHER_SUITE_TKIP:
1825 			atomic64_set(&key->tx_pn, status->ptk.tkip.tx_pn);
1826 			iwl_mvm_set_key_rx_seq_tids(key, status->ptk.tkip.seq);
1827 			break;
1828 		}
1829 
1830 		/* that's it for this key */
1831 		return;
1832 	}
1833 
1834 	if (data->find_phase) {
1835 		data->last_gtk = key;
1836 		data->cipher = key->cipher;
1837 		return;
1838 	}
1839 
1840 	if (data->status->num_of_gtk_rekeys)
1841 		ieee80211_remove_key(key);
1842 
1843 	if (data->last_gtk == key)
1844 		iwl_mvm_set_key_rx_seq(key, data->status, false);
1845 }
1846 
iwl_mvm_setup_connection_keep(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_wowlan_status_data * status)1847 static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm,
1848 					  struct ieee80211_vif *vif,
1849 					  struct iwl_wowlan_status_data *status)
1850 {
1851 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1852 	struct iwl_mvm_d3_gtk_iter_data gtkdata = {
1853 		.mvm = mvm,
1854 		.status = status,
1855 	};
1856 	u32 disconnection_reasons =
1857 		IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1858 		IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH;
1859 
1860 	if (!status || !vif->bss_conf.bssid)
1861 		return false;
1862 
1863 	if (status->wakeup_reasons & disconnection_reasons)
1864 		return false;
1865 
1866 	/* find last GTK that we used initially, if any */
1867 	gtkdata.find_phase = true;
1868 	ieee80211_iter_keys(mvm->hw, vif,
1869 			    iwl_mvm_d3_update_keys, &gtkdata);
1870 	/* not trying to keep connections with MFP/unhandled ciphers */
1871 	if (gtkdata.unhandled_cipher)
1872 		return false;
1873 	if (!gtkdata.num_keys)
1874 		goto out;
1875 	if (!gtkdata.last_gtk)
1876 		return false;
1877 
1878 	/*
1879 	 * invalidate all other GTKs that might still exist and update
1880 	 * the one that we used
1881 	 */
1882 	gtkdata.find_phase = false;
1883 	ieee80211_iter_keys(mvm->hw, vif,
1884 			    iwl_mvm_d3_update_keys, &gtkdata);
1885 
1886 	IWL_DEBUG_WOWLAN(mvm, "num of GTK rekeying %d\n",
1887 			 status->num_of_gtk_rekeys);
1888 	if (status->num_of_gtk_rekeys) {
1889 		struct ieee80211_key_conf *key;
1890 		struct {
1891 			struct ieee80211_key_conf conf;
1892 			u8 key[32];
1893 		} conf = {
1894 			.conf.cipher = gtkdata.cipher,
1895 			.conf.keyidx =
1896 				status->gtk.flags & IWL_WOWLAN_GTK_IDX_MASK,
1897 		};
1898 		__be64 replay_ctr;
1899 
1900 		IWL_DEBUG_WOWLAN(mvm,
1901 				 "Received from FW GTK cipher %d, key index %d\n",
1902 				 conf.conf.cipher, conf.conf.keyidx);
1903 
1904 		BUILD_BUG_ON(WLAN_KEY_LEN_CCMP != WLAN_KEY_LEN_GCMP);
1905 		BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_CCMP);
1906 		BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_GCMP_256);
1907 		BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_TKIP);
1908 		BUILD_BUG_ON(sizeof(conf.key) < sizeof(status->gtk.key));
1909 
1910 		memcpy(conf.conf.key, status->gtk.key, sizeof(status->gtk.key));
1911 
1912 		switch (gtkdata.cipher) {
1913 		case WLAN_CIPHER_SUITE_CCMP:
1914 		case WLAN_CIPHER_SUITE_GCMP:
1915 			conf.conf.keylen = WLAN_KEY_LEN_CCMP;
1916 			break;
1917 		case WLAN_CIPHER_SUITE_GCMP_256:
1918 			conf.conf.keylen = WLAN_KEY_LEN_GCMP_256;
1919 			break;
1920 		case WLAN_CIPHER_SUITE_TKIP:
1921 			conf.conf.keylen = WLAN_KEY_LEN_TKIP;
1922 			break;
1923 		}
1924 
1925 		key = ieee80211_gtk_rekey_add(vif, &conf.conf);
1926 		if (IS_ERR(key))
1927 			return false;
1928 		iwl_mvm_set_key_rx_seq(key, status, true);
1929 
1930 		replay_ctr = cpu_to_be64(status->replay_ctr);
1931 
1932 		ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid,
1933 					   (void *)&replay_ctr, GFP_KERNEL);
1934 	}
1935 
1936 out:
1937 	if (iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP,
1938 				    WOWLAN_GET_STATUSES, 0) < 10) {
1939 		mvmvif->seqno_valid = true;
1940 		/* +0x10 because the set API expects next-to-use, not last-used */
1941 		mvmvif->seqno = status->non_qos_seq_ctr + 0x10;
1942 	}
1943 
1944 	return true;
1945 }
1946 
iwl_mvm_convert_gtk_v2(struct iwl_wowlan_status_data * status,struct iwl_wowlan_gtk_status_v2 * data)1947 static void iwl_mvm_convert_gtk_v2(struct iwl_wowlan_status_data *status,
1948 				   struct iwl_wowlan_gtk_status_v2 *data)
1949 {
1950 	BUILD_BUG_ON(sizeof(status->gtk.key) < sizeof(data->key));
1951 	BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY +
1952 		     sizeof(data->tkip_mic_key) >
1953 		     sizeof(status->gtk.key));
1954 
1955 	status->gtk.len = data->key_len;
1956 	status->gtk.flags = data->key_flags;
1957 
1958 	memcpy(status->gtk.key, data->key, sizeof(data->key));
1959 
1960 	/* if it's as long as the TKIP encryption key, copy MIC key */
1961 	if (status->gtk.len == NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY)
1962 		memcpy(status->gtk.key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
1963 		       data->tkip_mic_key, sizeof(data->tkip_mic_key));
1964 }
1965 
iwl_mvm_convert_gtk_v3(struct iwl_wowlan_status_data * status,struct iwl_wowlan_gtk_status_v3 * data)1966 static void iwl_mvm_convert_gtk_v3(struct iwl_wowlan_status_data *status,
1967 				   struct iwl_wowlan_gtk_status_v3 *data)
1968 {
1969 	/* The parts we need are identical in v2 and v3 */
1970 #define CHECK(_f) do {							\
1971 	BUILD_BUG_ON(offsetof(struct iwl_wowlan_gtk_status_v2, _f) !=	\
1972 		     offsetof(struct iwl_wowlan_gtk_status_v3, _f));	\
1973 	BUILD_BUG_ON(offsetofend(struct iwl_wowlan_gtk_status_v2, _f) !=\
1974 		     offsetofend(struct iwl_wowlan_gtk_status_v3, _f));	\
1975 } while (0)
1976 
1977 	CHECK(key);
1978 	CHECK(key_len);
1979 	CHECK(key_flags);
1980 	CHECK(tkip_mic_key);
1981 #undef CHECK
1982 
1983 	iwl_mvm_convert_gtk_v2(status, (void *)data);
1984 }
1985 
iwl_mvm_convert_igtk(struct iwl_wowlan_status_data * status,struct iwl_wowlan_igtk_status * data)1986 static void iwl_mvm_convert_igtk(struct iwl_wowlan_status_data *status,
1987 				 struct iwl_wowlan_igtk_status *data)
1988 {
1989 	const u8 *ipn = data->ipn;
1990 
1991 	BUILD_BUG_ON(sizeof(status->igtk.key) < sizeof(data->key));
1992 
1993 	status->igtk.len = data->key_len;
1994 	status->igtk.flags = data->key_flags;
1995 
1996 	memcpy(status->igtk.key, data->key, sizeof(data->key));
1997 
1998 	status->igtk.ipn = ((u64)ipn[5] <<  0) |
1999 			   ((u64)ipn[4] <<  8) |
2000 			   ((u64)ipn[3] << 16) |
2001 			   ((u64)ipn[2] << 24) |
2002 			   ((u64)ipn[1] << 32) |
2003 			   ((u64)ipn[0] << 40);
2004 }
2005 
iwl_mvm_parse_wowlan_info_notif(struct iwl_mvm * mvm,struct iwl_wowlan_info_notif * data,struct iwl_wowlan_status_data * status,u32 len)2006 static void iwl_mvm_parse_wowlan_info_notif(struct iwl_mvm *mvm,
2007 					    struct iwl_wowlan_info_notif *data,
2008 					    struct iwl_wowlan_status_data *status,
2009 					    u32 len)
2010 {
2011 	u32 i;
2012 
2013 	if (len < sizeof(*data)) {
2014 		IWL_ERR(mvm, "Invalid WoWLAN info notification!\n");
2015 		status = NULL;
2016 		return;
2017 	}
2018 
2019 	iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc);
2020 	iwl_mvm_convert_gtk_v3(status, &data->gtk[0]);
2021 	iwl_mvm_convert_igtk(status, &data->igtk[0]);
2022 
2023 	status->replay_ctr = le64_to_cpu(data->replay_ctr);
2024 	status->pattern_number = le16_to_cpu(data->pattern_number);
2025 	for (i = 0; i < IWL_MAX_TID_COUNT; i++)
2026 		status->qos_seq_ctr[i] =
2027 			le16_to_cpu(data->qos_seq_ctr[i]);
2028 	status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons);
2029 	status->num_of_gtk_rekeys =
2030 		le32_to_cpu(data->num_of_gtk_rekeys);
2031 	status->received_beacons = le32_to_cpu(data->received_beacons);
2032 	status->tid_tear_down = data->tid_tear_down;
2033 }
2034 
2035 /* Occasionally, templates would be nice. This is one of those times ... */
2036 #define iwl_mvm_parse_wowlan_status_common(_ver)			\
2037 static struct iwl_wowlan_status_data *					\
2038 iwl_mvm_parse_wowlan_status_common_ ## _ver(struct iwl_mvm *mvm,	\
2039 					    struct iwl_wowlan_status_ ##_ver *data,\
2040 					    int len)			\
2041 {									\
2042 	struct iwl_wowlan_status_data *status;				\
2043 	int data_size, i;						\
2044 									\
2045 	if (len < sizeof(*data)) {					\
2046 		IWL_ERR(mvm, "Invalid WoWLAN status response!\n");	\
2047 		return NULL;						\
2048 	}								\
2049 									\
2050 	data_size = ALIGN(le32_to_cpu(data->wake_packet_bufsize), 4);	\
2051 	if (len != sizeof(*data) + data_size) {				\
2052 		IWL_ERR(mvm, "Invalid WoWLAN status response!\n");	\
2053 		return NULL;						\
2054 	}								\
2055 									\
2056 	status = kzalloc(sizeof(*status), GFP_KERNEL);			\
2057 	if (!status)							\
2058 		return NULL;						\
2059 									\
2060 	/* copy all the common fields */				\
2061 	status->replay_ctr = le64_to_cpu(data->replay_ctr);		\
2062 	status->pattern_number = le16_to_cpu(data->pattern_number);	\
2063 	status->non_qos_seq_ctr = le16_to_cpu(data->non_qos_seq_ctr);	\
2064 	for (i = 0; i < 8; i++)						\
2065 		status->qos_seq_ctr[i] =				\
2066 			le16_to_cpu(data->qos_seq_ctr[i]);		\
2067 	status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons);	\
2068 	status->num_of_gtk_rekeys =					\
2069 		le32_to_cpu(data->num_of_gtk_rekeys);			\
2070 	status->received_beacons = le32_to_cpu(data->received_beacons);	\
2071 	status->wake_packet_length =					\
2072 		le32_to_cpu(data->wake_packet_length);			\
2073 	status->wake_packet_bufsize =					\
2074 		le32_to_cpu(data->wake_packet_bufsize);			\
2075 	if (status->wake_packet_bufsize) {				\
2076 		status->wake_packet =					\
2077 			kmemdup(data->wake_packet,			\
2078 				status->wake_packet_bufsize,		\
2079 				GFP_KERNEL);				\
2080 		if (!status->wake_packet) {				\
2081 			kfree(status);					\
2082 			return NULL;					\
2083 		}							\
2084 	} else {							\
2085 		status->wake_packet = NULL;				\
2086 	}								\
2087 									\
2088 	return status;							\
2089 }
2090 
2091 iwl_mvm_parse_wowlan_status_common(v6)
iwl_mvm_parse_wowlan_status_common(v7)2092 iwl_mvm_parse_wowlan_status_common(v7)
2093 iwl_mvm_parse_wowlan_status_common(v9)
2094 iwl_mvm_parse_wowlan_status_common(v12)
2095 
2096 static struct iwl_wowlan_status_data *
2097 iwl_mvm_send_wowlan_get_status(struct iwl_mvm *mvm, u8 sta_id)
2098 {
2099 	struct iwl_wowlan_status_data *status;
2100 	struct iwl_wowlan_get_status_cmd get_status_cmd = {
2101 		.sta_id = cpu_to_le32(sta_id),
2102 	};
2103 	struct iwl_host_cmd cmd = {
2104 		.id = WOWLAN_GET_STATUSES,
2105 		.flags = CMD_WANT_SKB,
2106 		.data = { &get_status_cmd, },
2107 		.len = { sizeof(get_status_cmd), },
2108 	};
2109 	int ret, len;
2110 	u8 notif_ver;
2111 	u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id,
2112 					   IWL_FW_CMD_VER_UNKNOWN);
2113 
2114 	if (cmd_ver == IWL_FW_CMD_VER_UNKNOWN)
2115 		cmd.len[0] = 0;
2116 
2117 	lockdep_assert_held(&mvm->mutex);
2118 
2119 	ret = iwl_mvm_send_cmd(mvm, &cmd);
2120 	if (ret) {
2121 		IWL_ERR(mvm, "failed to query wakeup status (%d)\n", ret);
2122 		return ERR_PTR(ret);
2123 	}
2124 
2125 	len = iwl_rx_packet_payload_len(cmd.resp_pkt);
2126 
2127 	/* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */
2128 	notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP,
2129 					    WOWLAN_GET_STATUSES, 0);
2130 	if (!notif_ver)
2131 		notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
2132 						    WOWLAN_GET_STATUSES, 7);
2133 
2134 	if (!fw_has_api(&mvm->fw->ucode_capa,
2135 			IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL)) {
2136 		struct iwl_wowlan_status_v6 *v6 = (void *)cmd.resp_pkt->data;
2137 
2138 		status = iwl_mvm_parse_wowlan_status_common_v6(mvm, v6, len);
2139 		if (!status)
2140 			goto out_free_resp;
2141 
2142 		BUILD_BUG_ON(sizeof(v6->gtk.decrypt_key) >
2143 			     sizeof(status->gtk.key));
2144 		BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY +
2145 			     sizeof(v6->gtk.tkip_mic_key) >
2146 			     sizeof(status->gtk.key));
2147 
2148 		/* copy GTK info to the right place */
2149 		memcpy(status->gtk.key, v6->gtk.decrypt_key,
2150 		       sizeof(v6->gtk.decrypt_key));
2151 		memcpy(status->gtk.key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
2152 		       v6->gtk.tkip_mic_key,
2153 		       sizeof(v6->gtk.tkip_mic_key));
2154 
2155 		iwl_mvm_convert_key_counters(status, &v6->gtk.rsc.all_tsc_rsc);
2156 
2157 		/* hardcode the key length to 16 since v6 only supports 16 */
2158 		status->gtk.len = 16;
2159 
2160 		/*
2161 		 * The key index only uses 2 bits (values 0 to 3) and
2162 		 * we always set bit 7 which means this is the
2163 		 * currently used key.
2164 		 */
2165 		status->gtk.flags = v6->gtk.key_index | BIT(7);
2166 	} else if (notif_ver == 7) {
2167 		struct iwl_wowlan_status_v7 *v7 = (void *)cmd.resp_pkt->data;
2168 
2169 		status = iwl_mvm_parse_wowlan_status_common_v7(mvm, v7, len);
2170 		if (!status)
2171 			goto out_free_resp;
2172 
2173 		iwl_mvm_convert_key_counters(status, &v7->gtk[0].rsc.all_tsc_rsc);
2174 		iwl_mvm_convert_gtk_v2(status, &v7->gtk[0]);
2175 		iwl_mvm_convert_igtk(status, &v7->igtk[0]);
2176 	} else if (notif_ver == 9 || notif_ver == 10 || notif_ver == 11) {
2177 		struct iwl_wowlan_status_v9 *v9 = (void *)cmd.resp_pkt->data;
2178 
2179 		/* these three command versions have same layout and size, the
2180 		 * difference is only in a few not used (reserved) fields.
2181 		 */
2182 		status = iwl_mvm_parse_wowlan_status_common_v9(mvm, v9, len);
2183 		if (!status)
2184 			goto out_free_resp;
2185 
2186 		iwl_mvm_convert_key_counters(status, &v9->gtk[0].rsc.all_tsc_rsc);
2187 		iwl_mvm_convert_gtk_v2(status, &v9->gtk[0]);
2188 		iwl_mvm_convert_igtk(status, &v9->igtk[0]);
2189 
2190 		status->tid_tear_down = v9->tid_tear_down;
2191 	} else if (notif_ver == 12) {
2192 		struct iwl_wowlan_status_v12 *v12 = (void *)cmd.resp_pkt->data;
2193 
2194 		status = iwl_mvm_parse_wowlan_status_common_v12(mvm, v12, len);
2195 		if (!status)
2196 			goto out_free_resp;
2197 
2198 		iwl_mvm_convert_key_counters_v5(status, &v12->gtk[0].sc);
2199 		iwl_mvm_convert_gtk_v3(status, &v12->gtk[0]);
2200 		iwl_mvm_convert_igtk(status, &v12->igtk[0]);
2201 
2202 		status->tid_tear_down = v12->tid_tear_down;
2203 	} else {
2204 		IWL_ERR(mvm,
2205 			"Firmware advertises unknown WoWLAN status response %d!\n",
2206 			notif_ver);
2207 		status = NULL;
2208 	}
2209 
2210 out_free_resp:
2211 	iwl_free_resp(&cmd);
2212 	return status;
2213 }
2214 
2215 /* releases the MVM mutex */
iwl_mvm_query_wakeup_reasons(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_wowlan_status_data * status)2216 static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm,
2217 					 struct ieee80211_vif *vif,
2218 					 struct iwl_wowlan_status_data *status)
2219 {
2220 	int i;
2221 	bool keep;
2222 	struct iwl_mvm_sta *mvm_ap_sta;
2223 
2224 	if (!status)
2225 		goto out_unlock;
2226 
2227 	IWL_DEBUG_WOWLAN(mvm, "wakeup reason 0x%x\n",
2228 			 status->wakeup_reasons);
2229 
2230 	/* still at hard-coded place 0 for D3 image */
2231 	mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, 0);
2232 	if (!mvm_ap_sta)
2233 		goto out_unlock;
2234 
2235 	for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
2236 		u16 seq = status->qos_seq_ctr[i];
2237 		/* firmware stores last-used value, we store next value */
2238 		seq += 0x10;
2239 		mvm_ap_sta->tid_data[i].seq_number = seq;
2240 	}
2241 
2242 	if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000) {
2243 		i = mvm->offload_tid;
2244 		iwl_trans_set_q_ptrs(mvm->trans,
2245 				     mvm_ap_sta->tid_data[i].txq_id,
2246 				     mvm_ap_sta->tid_data[i].seq_number >> 4);
2247 	}
2248 
2249 	/* now we have all the data we need, unlock to avoid mac80211 issues */
2250 	mutex_unlock(&mvm->mutex);
2251 
2252 	iwl_mvm_report_wakeup_reasons(mvm, vif, status);
2253 
2254 	keep = iwl_mvm_setup_connection_keep(mvm, vif, status);
2255 
2256 	return keep;
2257 
2258 out_unlock:
2259 	mutex_unlock(&mvm->mutex);
2260 	return false;
2261 }
2262 
2263 #define ND_QUERY_BUF_LEN (sizeof(struct iwl_scan_offload_profile_match) * \
2264 			  IWL_SCAN_MAX_PROFILES)
2265 
2266 struct iwl_mvm_nd_results {
2267 	u32 matched_profiles;
2268 	u8 matches[ND_QUERY_BUF_LEN];
2269 };
2270 
2271 static int
iwl_mvm_netdetect_query_results(struct iwl_mvm * mvm,struct iwl_mvm_nd_results * results)2272 iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm,
2273 				struct iwl_mvm_nd_results *results)
2274 {
2275 	struct iwl_scan_offload_match_info *query;
2276 	struct iwl_host_cmd cmd = {
2277 		.id = SCAN_OFFLOAD_PROFILES_QUERY_CMD,
2278 		.flags = CMD_WANT_SKB,
2279 	};
2280 	int ret, len;
2281 	size_t query_len, matches_len;
2282 	int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw);
2283 
2284 	ret = iwl_mvm_send_cmd(mvm, &cmd);
2285 	if (ret) {
2286 		IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret);
2287 		return ret;
2288 	}
2289 
2290 	if (fw_has_api(&mvm->fw->ucode_capa,
2291 		       IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2292 		query_len = sizeof(struct iwl_scan_offload_match_info);
2293 		matches_len = sizeof(struct iwl_scan_offload_profile_match) *
2294 			max_profiles;
2295 	} else {
2296 		query_len = sizeof(struct iwl_scan_offload_profiles_query_v1);
2297 		matches_len = sizeof(struct iwl_scan_offload_profile_match_v1) *
2298 			max_profiles;
2299 	}
2300 
2301 	len = iwl_rx_packet_payload_len(cmd.resp_pkt);
2302 	if (len < query_len) {
2303 		IWL_ERR(mvm, "Invalid scan offload profiles query response!\n");
2304 		ret = -EIO;
2305 		goto out_free_resp;
2306 	}
2307 
2308 	query = (void *)cmd.resp_pkt->data;
2309 
2310 	results->matched_profiles = le32_to_cpu(query->matched_profiles);
2311 	memcpy(results->matches, query->matches, matches_len);
2312 
2313 #ifdef CONFIG_IWLWIFI_DEBUGFS
2314 	mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done);
2315 #endif
2316 
2317 out_free_resp:
2318 	iwl_free_resp(&cmd);
2319 	return ret;
2320 }
2321 
iwl_mvm_query_num_match_chans(struct iwl_mvm * mvm,struct iwl_mvm_nd_results * results,int idx)2322 static int iwl_mvm_query_num_match_chans(struct iwl_mvm *mvm,
2323 					 struct iwl_mvm_nd_results *results,
2324 					 int idx)
2325 {
2326 	int n_chans = 0, i;
2327 
2328 	if (fw_has_api(&mvm->fw->ucode_capa,
2329 		       IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2330 		struct iwl_scan_offload_profile_match *matches =
2331 			(void *)results->matches;
2332 
2333 		for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; i++)
2334 			n_chans += hweight8(matches[idx].matching_channels[i]);
2335 	} else {
2336 		struct iwl_scan_offload_profile_match_v1 *matches =
2337 			(void *)results->matches;
2338 
2339 		for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1; i++)
2340 			n_chans += hweight8(matches[idx].matching_channels[i]);
2341 	}
2342 
2343 	return n_chans;
2344 }
2345 
iwl_mvm_query_set_freqs(struct iwl_mvm * mvm,struct iwl_mvm_nd_results * results,struct cfg80211_wowlan_nd_match * match,int idx)2346 static void iwl_mvm_query_set_freqs(struct iwl_mvm *mvm,
2347 				    struct iwl_mvm_nd_results *results,
2348 				    struct cfg80211_wowlan_nd_match *match,
2349 				    int idx)
2350 {
2351 	int i;
2352 
2353 	if (fw_has_api(&mvm->fw->ucode_capa,
2354 		       IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2355 		struct iwl_scan_offload_profile_match *matches =
2356 			 (void *)results->matches;
2357 
2358 		for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; i++)
2359 			if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
2360 				match->channels[match->n_channels++] =
2361 					mvm->nd_channels[i]->center_freq;
2362 	} else {
2363 		struct iwl_scan_offload_profile_match_v1 *matches =
2364 			 (void *)results->matches;
2365 
2366 		for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1 * 8; i++)
2367 			if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
2368 				match->channels[match->n_channels++] =
2369 					mvm->nd_channels[i]->center_freq;
2370 	}
2371 }
2372 
2373 /**
2374  * enum iwl_d3_notif - d3 notifications
2375  * @IWL_D3_NOTIF_WOWLAN_INFO: WOWLAN_INFO_NOTIF was received
2376  * @IWL_D3_NOTIF_WOWLAN_WAKE_PKT: WOWLAN_WAKE_PKT_NOTIF was received
2377  * @IWL_D3_NOTIF_PROT_OFFLOAD: PROT_OFFLOAD_NOTIF was received
2378  * @IWL_D3_ND_MATCH_INFO: OFFLOAD_MATCH_INFO_NOTIF was received
2379  * @IWL_D3_NOTIF_D3_END_NOTIF: D3_END_NOTIF was received
2380  */
2381 enum iwl_d3_notif {
2382 	IWL_D3_NOTIF_WOWLAN_INFO =	BIT(0),
2383 	IWL_D3_NOTIF_WOWLAN_WAKE_PKT =	BIT(1),
2384 	IWL_D3_NOTIF_PROT_OFFLOAD =	BIT(2),
2385 	IWL_D3_ND_MATCH_INFO      =     BIT(3),
2386 	IWL_D3_NOTIF_D3_END_NOTIF =	BIT(4)
2387 };
2388 
2389 /* manage d3 resume data */
2390 struct iwl_d3_data {
2391 	struct iwl_wowlan_status_data *status;
2392 	bool test;
2393 	u32 d3_end_flags;
2394 	u32 notif_expected;	/* bitmap - see &enum iwl_d3_notif */
2395 	u32 notif_received;	/* bitmap - see &enum iwl_d3_notif */
2396 	struct iwl_mvm_nd_results *nd_results;
2397 	bool nd_results_valid;
2398 };
2399 
iwl_mvm_query_netdetect_reasons(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_d3_data * d3_data)2400 static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm,
2401 					    struct ieee80211_vif *vif,
2402 					    struct iwl_d3_data *d3_data)
2403 {
2404 	struct cfg80211_wowlan_nd_info *net_detect = NULL;
2405 	struct cfg80211_wowlan_wakeup wakeup = {
2406 		.pattern_idx = -1,
2407 	};
2408 	struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
2409 	unsigned long matched_profiles;
2410 	u32 reasons = 0;
2411 	int i, n_matches, ret;
2412 
2413 	if (WARN_ON(!d3_data || !d3_data->status))
2414 		goto out;
2415 
2416 	reasons = d3_data->status->wakeup_reasons;
2417 
2418 	if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
2419 		wakeup.rfkill_release = true;
2420 
2421 	if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS)
2422 		goto out;
2423 
2424 	if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
2425 				     WOWLAN_INFO_NOTIFICATION, 0)) {
2426 		IWL_INFO(mvm, "Query FW for ND results\n");
2427 		ret = iwl_mvm_netdetect_query_results(mvm, d3_data->nd_results);
2428 
2429 	} else {
2430 		IWL_INFO(mvm, "Notification based ND results\n");
2431 		ret = d3_data->nd_results_valid ? 0 : -1;
2432 	}
2433 
2434 	if (ret || !d3_data->nd_results->matched_profiles) {
2435 		wakeup_report = NULL;
2436 		goto out;
2437 	}
2438 
2439 	matched_profiles = d3_data->nd_results->matched_profiles;
2440 	if (mvm->n_nd_match_sets) {
2441 		n_matches = hweight_long(matched_profiles);
2442 	} else {
2443 		IWL_ERR(mvm, "no net detect match information available\n");
2444 		n_matches = 0;
2445 	}
2446 
2447 	net_detect = kzalloc(struct_size(net_detect, matches, n_matches),
2448 			     GFP_KERNEL);
2449 	if (!net_detect || !n_matches)
2450 		goto out_report_nd;
2451 
2452 	for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) {
2453 		struct cfg80211_wowlan_nd_match *match;
2454 		int idx, n_channels = 0;
2455 
2456 		n_channels = iwl_mvm_query_num_match_chans(mvm,
2457 							   d3_data->nd_results,
2458 							   i);
2459 
2460 		match = kzalloc(struct_size(match, channels, n_channels),
2461 				GFP_KERNEL);
2462 		if (!match)
2463 			goto out_report_nd;
2464 
2465 		net_detect->matches[net_detect->n_matches++] = match;
2466 
2467 		/* We inverted the order of the SSIDs in the scan
2468 		 * request, so invert the index here.
2469 		 */
2470 		idx = mvm->n_nd_match_sets - i - 1;
2471 		match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len;
2472 		memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid,
2473 		       match->ssid.ssid_len);
2474 
2475 		if (mvm->n_nd_channels < n_channels)
2476 			continue;
2477 
2478 		iwl_mvm_query_set_freqs(mvm, d3_data->nd_results, match, i);
2479 	}
2480 
2481 out_report_nd:
2482 	wakeup.net_detect = net_detect;
2483 out:
2484 	iwl_mvm_free_nd(mvm);
2485 
2486 	mutex_unlock(&mvm->mutex);
2487 	ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
2488 
2489 	if (net_detect) {
2490 		for (i = 0; i < net_detect->n_matches; i++)
2491 			kfree(net_detect->matches[i]);
2492 		kfree(net_detect);
2493 	}
2494 }
2495 
iwl_mvm_d3_disconnect_iter(void * data,u8 * mac,struct ieee80211_vif * vif)2496 static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac,
2497 				       struct ieee80211_vif *vif)
2498 {
2499 	/* skip the one we keep connection on */
2500 	if (data == vif)
2501 		return;
2502 
2503 	if (vif->type == NL80211_IFTYPE_STATION)
2504 		ieee80211_resume_disconnect(vif);
2505 }
2506 
iwl_mvm_rt_status(struct iwl_trans * trans,u32 base,u32 * err_id)2507 static bool iwl_mvm_rt_status(struct iwl_trans *trans, u32 base, u32 *err_id)
2508 {
2509 	struct error_table_start {
2510 		/* cf. struct iwl_error_event_table */
2511 		u32 valid;
2512 		__le32 err_id;
2513 	} err_info;
2514 
2515 	if (!base)
2516 		return false;
2517 
2518 	iwl_trans_read_mem_bytes(trans, base,
2519 				 &err_info, sizeof(err_info));
2520 	if (err_info.valid && err_id)
2521 		*err_id = le32_to_cpu(err_info.err_id);
2522 
2523 	return !!err_info.valid;
2524 }
2525 
iwl_mvm_check_rt_status(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2526 static bool iwl_mvm_check_rt_status(struct iwl_mvm *mvm,
2527 				   struct ieee80211_vif *vif)
2528 {
2529 	u32 err_id;
2530 
2531 	/* check for lmac1 error */
2532 	if (iwl_mvm_rt_status(mvm->trans,
2533 			      mvm->trans->dbg.lmac_error_event_table[0],
2534 			      &err_id)) {
2535 		if (err_id == RF_KILL_INDICATOR_FOR_WOWLAN) {
2536 			struct cfg80211_wowlan_wakeup wakeup = {
2537 				.rfkill_release = true,
2538 			};
2539 			ieee80211_report_wowlan_wakeup(vif, &wakeup,
2540 						       GFP_KERNEL);
2541 		}
2542 		return true;
2543 	}
2544 
2545 	/* check if we have lmac2 set and check for error */
2546 	if (iwl_mvm_rt_status(mvm->trans,
2547 			      mvm->trans->dbg.lmac_error_event_table[1], NULL))
2548 		return true;
2549 
2550 	/* check for umac error */
2551 	if (iwl_mvm_rt_status(mvm->trans,
2552 			      mvm->trans->dbg.umac_error_event_table, NULL))
2553 		return true;
2554 
2555 	return false;
2556 }
2557 
2558 /*
2559  * This function assumes:
2560  *	1. The mutex is already held.
2561  *	2. The callee functions unlock the mutex.
2562  */
2563 static bool
iwl_mvm_choose_query_wakeup_reasons(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_d3_data * d3_data)2564 iwl_mvm_choose_query_wakeup_reasons(struct iwl_mvm *mvm,
2565 				    struct ieee80211_vif *vif,
2566 				    struct iwl_d3_data *d3_data)
2567 {
2568 	lockdep_assert_held(&mvm->mutex);
2569 
2570 	/* if FW uses status notification, status shouldn't be NULL here */
2571 	if (!d3_data->status) {
2572 		struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2573 		u8 sta_id = mvm->net_detect ? IWL_MVM_INVALID_STA : mvmvif->ap_sta_id;
2574 
2575 		d3_data->status = iwl_mvm_send_wowlan_get_status(mvm, sta_id);
2576 	}
2577 
2578 	if (mvm->net_detect) {
2579 		iwl_mvm_query_netdetect_reasons(mvm, vif, d3_data);
2580 	} else {
2581 		bool keep = iwl_mvm_query_wakeup_reasons(mvm, vif,
2582 							 d3_data->status);
2583 
2584 #ifdef CONFIG_IWLWIFI_DEBUGFS
2585 		if (keep)
2586 			mvm->keep_vif = vif;
2587 #endif
2588 
2589 		return keep;
2590 	}
2591 	return false;
2592 }
2593 
2594 #define IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT (IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET | \
2595 						 IWL_WOWLAN_WAKEUP_BY_PATTERN | \
2596 						 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN |\
2597 						 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN_WILDCARD |\
2598 						 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN |\
2599 						 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN_WILDCARD)
2600 
iwl_mvm_wowlan_store_wake_pkt(struct iwl_mvm * mvm,struct iwl_wowlan_wake_pkt_notif * notif,struct iwl_wowlan_status_data * status,u32 len)2601 static int iwl_mvm_wowlan_store_wake_pkt(struct iwl_mvm *mvm,
2602 					 struct iwl_wowlan_wake_pkt_notif *notif,
2603 					 struct iwl_wowlan_status_data *status,
2604 					 u32 len)
2605 {
2606 	u32 data_size, packet_len = le32_to_cpu(notif->wake_packet_length);
2607 
2608 	if (len < sizeof(*notif)) {
2609 		IWL_ERR(mvm, "Invalid WoWLAN wake packet notification!\n");
2610 		return -EIO;
2611 	}
2612 
2613 	if (WARN_ON(!status)) {
2614 		IWL_ERR(mvm, "Got wake packet notification but wowlan status data is NULL\n");
2615 		return -EIO;
2616 	}
2617 
2618 	if (WARN_ON(!(status->wakeup_reasons &
2619 		      IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT))) {
2620 		IWL_ERR(mvm, "Got wakeup packet but wakeup reason is %x\n",
2621 			status->wakeup_reasons);
2622 		return -EIO;
2623 	}
2624 
2625 	data_size = len - offsetof(struct iwl_wowlan_wake_pkt_notif, wake_packet);
2626 
2627 	/* data_size got the padding from the notification, remove it. */
2628 	if (packet_len < data_size)
2629 		data_size = packet_len;
2630 
2631 	status->wake_packet = kmemdup(notif->wake_packet, data_size,
2632 				      GFP_ATOMIC);
2633 
2634 	if (!status->wake_packet)
2635 		return -ENOMEM;
2636 
2637 	status->wake_packet_length = packet_len;
2638 	status->wake_packet_bufsize = data_size;
2639 
2640 	return 0;
2641 }
2642 
iwl_mvm_nd_match_info_handler(struct iwl_mvm * mvm,struct iwl_d3_data * d3_data,struct iwl_scan_offload_match_info * notif,u32 len)2643 static void iwl_mvm_nd_match_info_handler(struct iwl_mvm *mvm,
2644 					  struct iwl_d3_data *d3_data,
2645 					  struct iwl_scan_offload_match_info *notif,
2646 					  u32 len)
2647 {
2648 	struct iwl_wowlan_status_data *status = d3_data->status;
2649 	struct ieee80211_vif *vif = iwl_mvm_get_bss_vif(mvm);
2650 	struct iwl_mvm_nd_results *results = d3_data->nd_results;
2651 	size_t i, matches_len = sizeof(struct iwl_scan_offload_profile_match) *
2652 		iwl_umac_scan_get_max_profiles(mvm->fw);
2653 
2654 	if (IS_ERR_OR_NULL(vif))
2655 		return;
2656 
2657 	if (len < sizeof(struct iwl_scan_offload_match_info)) {
2658 		IWL_ERR(mvm, "Invalid scan match info notification\n");
2659 		return;
2660 	}
2661 
2662 	if (!mvm->net_detect) {
2663 		IWL_ERR(mvm, "Unexpected scan match info notification\n");
2664 		return;
2665 	}
2666 
2667 	if (!status || status->wakeup_reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
2668 		IWL_ERR(mvm,
2669 			"Ignore scan match info notification: no reason\n");
2670 		return;
2671 	}
2672 
2673 #ifdef CONFIG_IWLWIFI_DEBUGFS
2674 	mvm->last_netdetect_scans = le32_to_cpu(notif->n_scans_done);
2675 #endif
2676 
2677 	results->matched_profiles = le32_to_cpu(notif->matched_profiles);
2678 	IWL_INFO(mvm, "number of matched profiles=%u\n",
2679 		 results->matched_profiles);
2680 
2681 	if (results->matched_profiles) {
2682 		memcpy(results->matches, notif->matches, matches_len);
2683 		d3_data->nd_results_valid = TRUE;
2684 	}
2685 
2686 	/* no scan should be active at this point */
2687 	mvm->scan_status = 0;
2688 	for (i = 0; i < mvm->max_scans; i++)
2689 		mvm->scan_uid_status[i] = 0;
2690 }
2691 
iwl_mvm_wait_d3_notif(struct iwl_notif_wait_data * notif_wait,struct iwl_rx_packet * pkt,void * data)2692 static bool iwl_mvm_wait_d3_notif(struct iwl_notif_wait_data *notif_wait,
2693 				  struct iwl_rx_packet *pkt, void *data)
2694 {
2695 	struct iwl_mvm *mvm =
2696 		container_of(notif_wait, struct iwl_mvm, notif_wait);
2697 	struct iwl_d3_data *d3_data = data;
2698 	u32 len;
2699 	int ret;
2700 
2701 	switch (WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) {
2702 	case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION): {
2703 		struct iwl_wowlan_info_notif *notif = (void *)pkt->data;
2704 
2705 		if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_INFO) {
2706 			/* We might get two notifications due to dual bss */
2707 			IWL_DEBUG_WOWLAN(mvm,
2708 					 "Got additional wowlan info notification\n");
2709 			break;
2710 		}
2711 
2712 		d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_INFO;
2713 		len = iwl_rx_packet_payload_len(pkt);
2714 		iwl_mvm_parse_wowlan_info_notif(mvm, notif, d3_data->status,
2715 						len);
2716 		if (d3_data->status &&
2717 		    d3_data->status->wakeup_reasons & IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT)
2718 			/* We are supposed to get also wake packet notif */
2719 			d3_data->notif_expected |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT;
2720 
2721 		break;
2722 	}
2723 	case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION): {
2724 		struct iwl_wowlan_wake_pkt_notif *notif = (void *)pkt->data;
2725 
2726 		if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_WAKE_PKT) {
2727 			/* We shouldn't get two wake packet notifications */
2728 			IWL_ERR(mvm,
2729 				"Got additional wowlan wake packet notification\n");
2730 		} else {
2731 			d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT;
2732 			len =  iwl_rx_packet_payload_len(pkt);
2733 			ret = iwl_mvm_wowlan_store_wake_pkt(mvm, notif,
2734 							    d3_data->status,
2735 							    len);
2736 			if (ret)
2737 				IWL_ERR(mvm,
2738 					"Can't parse WOWLAN_WAKE_PKT_NOTIFICATION\n");
2739 		}
2740 
2741 		break;
2742 	}
2743 	case WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF): {
2744 		struct iwl_scan_offload_match_info *notif = (void *)pkt->data;
2745 
2746 		if (d3_data->notif_received & IWL_D3_ND_MATCH_INFO) {
2747 			IWL_ERR(mvm,
2748 				"Got additional netdetect match info\n");
2749 			break;
2750 		}
2751 
2752 		d3_data->notif_received |= IWL_D3_ND_MATCH_INFO;
2753 
2754 		/* explicitly set this in the 'expected' as well */
2755 		d3_data->notif_expected |= IWL_D3_ND_MATCH_INFO;
2756 
2757 		len = iwl_rx_packet_payload_len(pkt);
2758 		iwl_mvm_nd_match_info_handler(mvm, d3_data, notif, len);
2759 		break;
2760 	}
2761 	case WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION): {
2762 		struct iwl_mvm_d3_end_notif *notif = (void *)pkt->data;
2763 
2764 		d3_data->d3_end_flags = __le32_to_cpu(notif->flags);
2765 		d3_data->notif_received |= IWL_D3_NOTIF_D3_END_NOTIF;
2766 
2767 		break;
2768 	}
2769 	default:
2770 		WARN_ON(1);
2771 	}
2772 
2773 	return d3_data->notif_received == d3_data->notif_expected;
2774 }
2775 
iwl_mvm_resume_firmware(struct iwl_mvm * mvm,bool test)2776 static int iwl_mvm_resume_firmware(struct iwl_mvm *mvm, bool test)
2777 {
2778 	int ret;
2779 	enum iwl_d3_status d3_status;
2780 	struct iwl_host_cmd cmd = {
2781 			.id = D0I3_END_CMD,
2782 			.flags = CMD_WANT_SKB | CMD_SEND_IN_D3,
2783 		};
2784 	bool reset = fw_has_capa(&mvm->fw->ucode_capa,
2785 				 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2786 
2787 	ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, !reset);
2788 	if (ret)
2789 		return ret;
2790 
2791 	if (d3_status != IWL_D3_STATUS_ALIVE) {
2792 		IWL_INFO(mvm, "Device was reset during suspend\n");
2793 		return -ENOENT;
2794 	}
2795 
2796 	/*
2797 	 * We should trigger resume flow using command only for 22000 family
2798 	 * AX210 and above don't need the command since they have
2799 	 * the doorbell interrupt.
2800 	 */
2801 	if (mvm->trans->trans_cfg->device_family <= IWL_DEVICE_FAMILY_22000 &&
2802 	    fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_D0I3_END_FIRST)) {
2803 		ret = iwl_mvm_send_cmd(mvm, &cmd);
2804 		if (ret < 0)
2805 			IWL_ERR(mvm, "Failed to send D0I3_END_CMD first (%d)\n",
2806 				ret);
2807 	}
2808 
2809 	return ret;
2810 }
2811 
2812 #define IWL_MVM_D3_NOTIF_TIMEOUT (HZ / 5)
2813 
iwl_mvm_d3_notif_wait(struct iwl_mvm * mvm,struct iwl_d3_data * d3_data)2814 static int iwl_mvm_d3_notif_wait(struct iwl_mvm *mvm,
2815 				 struct iwl_d3_data *d3_data)
2816 {
2817 	static const u16 d3_resume_notif[] = {
2818 		WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION),
2819 		WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION),
2820 		WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF),
2821 		WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION)
2822 	};
2823 	struct iwl_notification_wait wait_d3_notif;
2824 	int ret;
2825 
2826 	iwl_init_notification_wait(&mvm->notif_wait, &wait_d3_notif,
2827 				   d3_resume_notif, ARRAY_SIZE(d3_resume_notif),
2828 				   iwl_mvm_wait_d3_notif, d3_data);
2829 
2830 	ret = iwl_mvm_resume_firmware(mvm, d3_data->test);
2831 	if (ret) {
2832 		iwl_remove_notification(&mvm->notif_wait, &wait_d3_notif);
2833 		return ret;
2834 	}
2835 
2836 	return iwl_wait_notification(&mvm->notif_wait, &wait_d3_notif,
2837 				     IWL_MVM_D3_NOTIF_TIMEOUT);
2838 }
2839 
iwl_mvm_d3_resume_notif_based(struct iwl_mvm * mvm)2840 static inline bool iwl_mvm_d3_resume_notif_based(struct iwl_mvm *mvm)
2841 {
2842 	return iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
2843 				       WOWLAN_INFO_NOTIFICATION, 0) &&
2844 		iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
2845 					WOWLAN_WAKE_PKT_NOTIFICATION, 0) &&
2846 		iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
2847 					D3_END_NOTIFICATION, 0);
2848 }
2849 
__iwl_mvm_resume(struct iwl_mvm * mvm,bool test)2850 static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test)
2851 {
2852 	struct ieee80211_vif *vif = NULL;
2853 	int ret = 1;
2854 	struct iwl_mvm_nd_results results = {};
2855 	struct iwl_d3_data d3_data = {
2856 		.test = test,
2857 		.notif_expected =
2858 			IWL_D3_NOTIF_WOWLAN_INFO |
2859 			IWL_D3_NOTIF_D3_END_NOTIF,
2860 		.nd_results_valid = false,
2861 		.nd_results = &results,
2862 	};
2863 	bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
2864 					 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2865 	bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa,
2866 				      IWL_UCODE_TLV_CAPA_D0I3_END_FIRST);
2867 	bool resume_notif_based = iwl_mvm_d3_resume_notif_based(mvm);
2868 	bool keep = false;
2869 
2870 	mutex_lock(&mvm->mutex);
2871 
2872 	mvm->last_reset_or_resume_time_jiffies = jiffies;
2873 
2874 	/* get the BSS vif pointer again */
2875 	vif = iwl_mvm_get_bss_vif(mvm);
2876 	if (IS_ERR_OR_NULL(vif))
2877 		goto err;
2878 
2879 	iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
2880 
2881 	if (iwl_mvm_check_rt_status(mvm, vif)) {
2882 		set_bit(STATUS_FW_ERROR, &mvm->trans->status);
2883 		iwl_mvm_dump_nic_error_log(mvm);
2884 		iwl_dbg_tlv_time_point(&mvm->fwrt,
2885 				       IWL_FW_INI_TIME_POINT_FW_ASSERT, NULL);
2886 		iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert,
2887 					false, 0);
2888 		ret = 1;
2889 		goto err;
2890 	}
2891 
2892 	if (resume_notif_based) {
2893 		d3_data.status = kzalloc(sizeof(*d3_data.status), GFP_KERNEL);
2894 		if (!d3_data.status) {
2895 			IWL_ERR(mvm, "Failed to allocate wowlan status\n");
2896 			ret = -ENOMEM;
2897 			goto err;
2898 		}
2899 
2900 		ret = iwl_mvm_d3_notif_wait(mvm, &d3_data);
2901 		if (ret)
2902 			goto err;
2903 	} else {
2904 		ret = iwl_mvm_resume_firmware(mvm, test);
2905 		if (ret < 0)
2906 			goto err;
2907 	}
2908 
2909 	/* after the successful handshake, we're out of D3 */
2910 	mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
2911 
2912 	/* when reset is required we can't send these following commands */
2913 	if (d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)
2914 		goto query_wakeup_reasons;
2915 
2916 	/*
2917 	 * Query the current location and source from the D3 firmware so we
2918 	 * can play it back when we re-intiailize the D0 firmware
2919 	 */
2920 	iwl_mvm_update_changed_regdom(mvm);
2921 
2922 	/* Re-configure PPAG settings */
2923 	iwl_mvm_ppag_send_cmd(mvm);
2924 
2925 	if (!unified_image)
2926 		/*  Re-configure default SAR profile */
2927 		iwl_mvm_sar_select_profile(mvm, 1, 1);
2928 
2929 	if (mvm->net_detect && unified_image) {
2930 		/* If this is a non-unified image, we restart the FW,
2931 		 * so no need to stop the netdetect scan.  If that
2932 		 * fails, continue and try to get the wake-up reasons,
2933 		 * but trigger a HW restart by keeping a failure code
2934 		 * in ret.
2935 		 */
2936 		ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT,
2937 					false);
2938 	}
2939 
2940 query_wakeup_reasons:
2941 	keep = iwl_mvm_choose_query_wakeup_reasons(mvm, vif, &d3_data);
2942 	/* has unlocked the mutex, so skip that */
2943 	goto out;
2944 
2945 err:
2946 	mutex_unlock(&mvm->mutex);
2947 out:
2948 	if (d3_data.status)
2949 		kfree(d3_data.status->wake_packet);
2950 	kfree(d3_data.status);
2951 	iwl_mvm_free_nd(mvm);
2952 
2953 	if (!d3_data.test && !mvm->net_detect)
2954 		ieee80211_iterate_active_interfaces_mtx(mvm->hw,
2955 							IEEE80211_IFACE_ITER_NORMAL,
2956 							iwl_mvm_d3_disconnect_iter,
2957 							keep ? vif : NULL);
2958 
2959 	clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
2960 
2961 	/* no need to reset the device in unified images, if successful */
2962 	if (unified_image && !ret) {
2963 		/* nothing else to do if we already sent D0I3_END_CMD */
2964 		if (d0i3_first)
2965 			return 0;
2966 
2967 		if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
2968 					     D3_END_NOTIFICATION, 0)) {
2969 			ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL);
2970 			if (!ret)
2971 				return 0;
2972 		} else if (!(d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)) {
2973 			return 0;
2974 		}
2975 	}
2976 
2977 	/*
2978 	 * Reconfigure the device in one of the following cases:
2979 	 * 1. We are not using a unified image
2980 	 * 2. We are using a unified image but had an error while exiting D3
2981 	 */
2982 	set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
2983 
2984 	/* regardless of what happened, we're now out of D3 */
2985 	mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
2986 
2987 	return 1;
2988 }
2989 
iwl_mvm_resume(struct ieee80211_hw * hw)2990 int iwl_mvm_resume(struct ieee80211_hw *hw)
2991 {
2992 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2993 	int ret;
2994 
2995 	ret = __iwl_mvm_resume(mvm, false);
2996 
2997 	iwl_mvm_resume_tcm(mvm);
2998 
2999 	iwl_fw_runtime_resume(&mvm->fwrt);
3000 
3001 	return ret;
3002 }
3003 
iwl_mvm_set_wakeup(struct ieee80211_hw * hw,bool enabled)3004 void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled)
3005 {
3006 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3007 
3008 	device_set_wakeup_enable(mvm->trans->dev, enabled);
3009 }
3010 
3011 #ifdef CONFIG_IWLWIFI_DEBUGFS
iwl_mvm_d3_test_open(struct inode * inode,struct file * file)3012 static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file)
3013 {
3014 	struct iwl_mvm *mvm = inode->i_private;
3015 	int err;
3016 
3017 	if (mvm->d3_test_active)
3018 		return -EBUSY;
3019 
3020 	file->private_data = inode->i_private;
3021 
3022 	iwl_mvm_pause_tcm(mvm, true);
3023 
3024 	iwl_fw_runtime_suspend(&mvm->fwrt);
3025 
3026 	/* start pseudo D3 */
3027 	rtnl_lock();
3028 	wiphy_lock(mvm->hw->wiphy);
3029 	err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true);
3030 	wiphy_unlock(mvm->hw->wiphy);
3031 	rtnl_unlock();
3032 	if (err > 0)
3033 		err = -EINVAL;
3034 	if (err)
3035 		return err;
3036 
3037 	mvm->d3_test_active = true;
3038 	mvm->keep_vif = NULL;
3039 	return 0;
3040 }
3041 
iwl_mvm_d3_test_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)3042 static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf,
3043 				    size_t count, loff_t *ppos)
3044 {
3045 	struct iwl_mvm *mvm = file->private_data;
3046 	u32 pme_asserted;
3047 
3048 	while (true) {
3049 		/* read pme_ptr if available */
3050 		if (mvm->d3_test_pme_ptr) {
3051 			pme_asserted = iwl_trans_read_mem32(mvm->trans,
3052 						mvm->d3_test_pme_ptr);
3053 			if (pme_asserted)
3054 				break;
3055 		}
3056 
3057 		if (msleep_interruptible(100))
3058 			break;
3059 	}
3060 
3061 	return 0;
3062 }
3063 
iwl_mvm_d3_test_disconn_work_iter(void * _data,u8 * mac,struct ieee80211_vif * vif)3064 static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac,
3065 					      struct ieee80211_vif *vif)
3066 {
3067 	/* skip the one we keep connection on */
3068 	if (_data == vif)
3069 		return;
3070 
3071 	if (vif->type == NL80211_IFTYPE_STATION)
3072 		ieee80211_connection_loss(vif);
3073 }
3074 
iwl_mvm_d3_test_release(struct inode * inode,struct file * file)3075 static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file)
3076 {
3077 	struct iwl_mvm *mvm = inode->i_private;
3078 	bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
3079 					 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
3080 
3081 	mvm->d3_test_active = false;
3082 
3083 	iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
3084 
3085 	rtnl_lock();
3086 	wiphy_lock(mvm->hw->wiphy);
3087 	__iwl_mvm_resume(mvm, true);
3088 	wiphy_unlock(mvm->hw->wiphy);
3089 	rtnl_unlock();
3090 
3091 	iwl_mvm_resume_tcm(mvm);
3092 
3093 	iwl_fw_runtime_resume(&mvm->fwrt);
3094 
3095 	iwl_abort_notification_waits(&mvm->notif_wait);
3096 	if (!unified_image) {
3097 		int remaining_time = 10;
3098 
3099 		ieee80211_restart_hw(mvm->hw);
3100 
3101 		/* wait for restart and disconnect all interfaces */
3102 		while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
3103 		       remaining_time > 0) {
3104 			remaining_time--;
3105 			msleep(1000);
3106 		}
3107 
3108 		if (remaining_time == 0)
3109 			IWL_ERR(mvm, "Timed out waiting for HW restart!\n");
3110 	}
3111 
3112 	ieee80211_iterate_active_interfaces_atomic(
3113 		mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
3114 		iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif);
3115 
3116 	return 0;
3117 }
3118 
3119 const struct file_operations iwl_dbgfs_d3_test_ops = {
3120 	.llseek = no_llseek,
3121 	.open = iwl_mvm_d3_test_open,
3122 	.read = iwl_mvm_d3_test_read,
3123 	.release = iwl_mvm_d3_test_release,
3124 };
3125 #endif
3126