1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /*
3 * Copyright (C) 2012-2014, 2018-2026 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 DEFINE_RAW_FLEX(struct iwl_mvm_wep_key_cmd, wkc, wep_key, 1);
124 struct iwl_mvm_wep_key *wep_key = wkc->wep_key;
125
126 wkc->mac_id_n_color =
127 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
128 mvmvif->color));
129 wkc->num_keys = 1;
130 /* firmware sets STA_KEY_FLG_WEP_13BYTES */
131 wkc->decryption_type = STA_KEY_FLG_WEP;
132 wep_key->key_index = key->keyidx;
133 wep_key->key_size = key->keylen;
134
135 /*
136 * This will fail -- the key functions don't set support
137 * pairwise WEP keys. However, that's better than silently
138 * failing WoWLAN. Or maybe not?
139 */
140 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
141 break;
142
143 memcpy(&wep_key->key[3], key->key, key->keylen);
144 if (key->keyidx == mvmvif->tx_key_idx) {
145 /* TX key must be at offset 0 */
146 wep_key->key_offset = 0;
147 } else {
148 /* others start at 1 */
149 data->wep_key_idx++;
150 wep_key->key_offset = data->wep_key_idx;
151 }
152
153 mutex_lock(&mvm->mutex);
154 ret = iwl_mvm_send_cmd_pdu(mvm, WEP_KEY, 0,
155 __struct_size(wkc), wkc);
156 data->error = ret != 0;
157
158 mvm->ptk_ivlen = key->iv_len;
159 mvm->ptk_icvlen = key->icv_len;
160 mvm->gtk_ivlen = key->iv_len;
161 mvm->gtk_icvlen = key->icv_len;
162 mutex_unlock(&mvm->mutex);
163
164 /* don't upload key again */
165 return;
166 }
167 default:
168 data->error = true;
169 return;
170 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
171 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
172 return;
173 case WLAN_CIPHER_SUITE_AES_CMAC:
174 /*
175 * Ignore CMAC keys -- the WoWLAN firmware doesn't support them
176 * but we also shouldn't abort suspend due to that. It does have
177 * support for the IGTK key renewal, but doesn't really use the
178 * IGTK for anything. This means we could spuriously wake up or
179 * be deauthenticated, but that was considered acceptable.
180 */
181 return;
182 case WLAN_CIPHER_SUITE_TKIP:
183 case WLAN_CIPHER_SUITE_CCMP:
184 case WLAN_CIPHER_SUITE_GCMP:
185 case WLAN_CIPHER_SUITE_GCMP_256:
186 break;
187 }
188
189 mutex_lock(&mvm->mutex);
190 /*
191 * The D3 firmware hardcodes the key offset 0 as the key it
192 * uses to transmit packets to the AP, i.e. the PTK.
193 */
194 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
195 mvm->ptk_ivlen = key->iv_len;
196 mvm->ptk_icvlen = key->icv_len;
197 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 0);
198 } else {
199 /*
200 * firmware only supports TSC/RSC for a single key,
201 * so if there are multiple keep overwriting them
202 * with new ones -- this relies on mac80211 doing
203 * list_add_tail().
204 */
205 mvm->gtk_ivlen = key->iv_len;
206 mvm->gtk_icvlen = key->icv_len;
207 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 1);
208 }
209 mutex_unlock(&mvm->mutex);
210 data->error = ret != 0;
211 }
212
213 struct wowlan_key_rsc_tsc_data {
214 struct iwl_wowlan_rsc_tsc_params_cmd_ver_2 *rsc_tsc;
215 bool have_rsc_tsc;
216 };
217
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)218 static void iwl_mvm_wowlan_get_rsc_tsc_data(struct ieee80211_hw *hw,
219 struct ieee80211_vif *vif,
220 struct ieee80211_sta *sta,
221 struct ieee80211_key_conf *key,
222 void *_data)
223 {
224 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
225 struct wowlan_key_rsc_tsc_data *data = _data;
226 struct aes_sc *aes_sc;
227 struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
228 struct ieee80211_key_seq seq;
229 int i;
230
231 switch (key->cipher) {
232 default:
233 break;
234 case WLAN_CIPHER_SUITE_TKIP:
235 if (sta) {
236 u64 pn64;
237
238 tkip_sc =
239 data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
240 tkip_tx_sc =
241 &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
242
243 pn64 = atomic64_read(&key->tx_pn);
244 tkip_tx_sc->iv16 = cpu_to_le16(TKIP_PN_TO_IV16(pn64));
245 tkip_tx_sc->iv32 = cpu_to_le32(TKIP_PN_TO_IV32(pn64));
246 } else {
247 tkip_sc =
248 data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc;
249 }
250
251 /*
252 * For non-QoS this relies on the fact that both the uCode and
253 * mac80211 use TID 0 (as they need to avoid replay attacks)
254 * for checking the IV in the frames.
255 */
256 for (i = 0; i < IWL_NUM_RSC; i++) {
257 ieee80211_get_key_rx_seq(key, i, &seq);
258 tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
259 tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
260 }
261
262 data->have_rsc_tsc = true;
263 break;
264 case WLAN_CIPHER_SUITE_CCMP:
265 case WLAN_CIPHER_SUITE_GCMP:
266 case WLAN_CIPHER_SUITE_GCMP_256:
267 if (sta) {
268 struct aes_sc *aes_tx_sc;
269 u64 pn64;
270
271 aes_sc =
272 data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
273 aes_tx_sc =
274 &data->rsc_tsc->all_tsc_rsc.aes.tsc;
275
276 pn64 = atomic64_read(&key->tx_pn);
277 aes_tx_sc->pn = cpu_to_le64(pn64);
278 } else {
279 aes_sc =
280 data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
281 }
282
283 /*
284 * For non-QoS this relies on the fact that both the uCode and
285 * mac80211/our RX code use TID 0 for checking the PN.
286 */
287 if (sta && iwl_mvm_has_new_rx_api(mvm)) {
288 struct iwl_mvm_sta *mvmsta;
289 struct iwl_mvm_key_pn *ptk_pn;
290 const u8 *pn;
291
292 mvmsta = iwl_mvm_sta_from_mac80211(sta);
293 rcu_read_lock();
294 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]);
295 if (WARN_ON(!ptk_pn)) {
296 rcu_read_unlock();
297 break;
298 }
299
300 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
301 pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i,
302 mvm->trans->info.num_rxqs);
303 aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
304 ((u64)pn[4] << 8) |
305 ((u64)pn[3] << 16) |
306 ((u64)pn[2] << 24) |
307 ((u64)pn[1] << 32) |
308 ((u64)pn[0] << 40));
309 }
310
311 rcu_read_unlock();
312 } else {
313 for (i = 0; i < IWL_NUM_RSC; i++) {
314 u8 *pn = seq.ccmp.pn;
315
316 ieee80211_get_key_rx_seq(key, i, &seq);
317 aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
318 ((u64)pn[4] << 8) |
319 ((u64)pn[3] << 16) |
320 ((u64)pn[2] << 24) |
321 ((u64)pn[1] << 32) |
322 ((u64)pn[0] << 40));
323 }
324 }
325 data->have_rsc_tsc = true;
326 break;
327 }
328 }
329
330 struct wowlan_key_rsc_v5_data {
331 struct iwl_wowlan_rsc_tsc_params_cmd *rsc;
332 bool have_rsc;
333 int gtks;
334 int gtk_ids[4];
335 };
336
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)337 static void iwl_mvm_wowlan_get_rsc_v5_data(struct ieee80211_hw *hw,
338 struct ieee80211_vif *vif,
339 struct ieee80211_sta *sta,
340 struct ieee80211_key_conf *key,
341 void *_data)
342 {
343 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
344 struct wowlan_key_rsc_v5_data *data = _data;
345 struct ieee80211_key_seq seq;
346 __le64 *rsc;
347 int i;
348
349 /* only for ciphers that can be PTK/GTK */
350 switch (key->cipher) {
351 default:
352 return;
353 case WLAN_CIPHER_SUITE_TKIP:
354 case WLAN_CIPHER_SUITE_CCMP:
355 case WLAN_CIPHER_SUITE_GCMP:
356 case WLAN_CIPHER_SUITE_GCMP_256:
357 break;
358 }
359
360 if (sta) {
361 rsc = data->rsc->ucast_rsc;
362 } else {
363 if (WARN_ON(data->gtks >= ARRAY_SIZE(data->gtk_ids)))
364 return;
365 data->gtk_ids[data->gtks] = key->keyidx;
366 rsc = data->rsc->mcast_rsc[data->gtks % 2];
367 if (WARN_ON(key->keyidx >=
368 ARRAY_SIZE(data->rsc->mcast_key_id_map)))
369 return;
370 data->rsc->mcast_key_id_map[key->keyidx] = data->gtks % 2;
371 if (data->gtks >= 2) {
372 int prev = data->gtks - 2;
373 int prev_idx = data->gtk_ids[prev];
374
375 data->rsc->mcast_key_id_map[prev_idx] =
376 IWL_MCAST_KEY_MAP_INVALID;
377 }
378 data->gtks++;
379 }
380
381 switch (key->cipher) {
382 default:
383 WARN_ON(1);
384 break;
385 case WLAN_CIPHER_SUITE_TKIP:
386
387 /*
388 * For non-QoS this relies on the fact that both the uCode and
389 * mac80211 use TID 0 (as they need to avoid replay attacks)
390 * for checking the IV in the frames.
391 */
392 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
393 ieee80211_get_key_rx_seq(key, i, &seq);
394
395 rsc[i] = cpu_to_le64(((u64)seq.tkip.iv32 << 16) |
396 seq.tkip.iv16);
397 }
398
399 data->have_rsc = true;
400 break;
401 case WLAN_CIPHER_SUITE_CCMP:
402 case WLAN_CIPHER_SUITE_GCMP:
403 case WLAN_CIPHER_SUITE_GCMP_256:
404 /*
405 * For non-QoS this relies on the fact that both the uCode and
406 * mac80211/our RX code use TID 0 for checking the PN.
407 */
408 if (sta) {
409 struct iwl_mvm_sta *mvmsta;
410 struct iwl_mvm_key_pn *ptk_pn;
411 const u8 *pn;
412
413 mvmsta = iwl_mvm_sta_from_mac80211(sta);
414 rcu_read_lock();
415 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]);
416 if (WARN_ON(!ptk_pn)) {
417 rcu_read_unlock();
418 break;
419 }
420
421 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
422 pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i,
423 mvm->trans->info.num_rxqs);
424 rsc[i] = cpu_to_le64((u64)pn[5] |
425 ((u64)pn[4] << 8) |
426 ((u64)pn[3] << 16) |
427 ((u64)pn[2] << 24) |
428 ((u64)pn[1] << 32) |
429 ((u64)pn[0] << 40));
430 }
431
432 rcu_read_unlock();
433 } else {
434 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
435 u8 *pn = seq.ccmp.pn;
436
437 ieee80211_get_key_rx_seq(key, i, &seq);
438 rsc[i] = cpu_to_le64((u64)pn[5] |
439 ((u64)pn[4] << 8) |
440 ((u64)pn[3] << 16) |
441 ((u64)pn[2] << 24) |
442 ((u64)pn[1] << 32) |
443 ((u64)pn[0] << 40));
444 }
445 }
446 data->have_rsc = true;
447 break;
448 }
449 }
450
iwl_mvm_wowlan_config_rsc_tsc(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_mvm_vif_link_info * mvm_link)451 static int iwl_mvm_wowlan_config_rsc_tsc(struct iwl_mvm *mvm,
452 struct ieee80211_vif *vif,
453 struct iwl_mvm_vif_link_info *mvm_link)
454 {
455 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TSC_RSC_PARAM,
456 IWL_FW_CMD_VER_UNKNOWN);
457 int ret;
458
459 if (ver == 5) {
460 struct wowlan_key_rsc_v5_data data = {};
461 int i;
462
463 data.rsc = kzalloc(sizeof(*data.rsc), GFP_KERNEL);
464 if (!data.rsc)
465 return -ENOMEM;
466
467 for (i = 0; i < ARRAY_SIZE(data.rsc->mcast_key_id_map); i++)
468 data.rsc->mcast_key_id_map[i] =
469 IWL_MCAST_KEY_MAP_INVALID;
470 data.rsc->sta_id = cpu_to_le32(mvm_link->ap_sta_id);
471
472 ieee80211_iter_keys(mvm->hw, vif,
473 iwl_mvm_wowlan_get_rsc_v5_data,
474 &data);
475
476 if (data.have_rsc)
477 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM,
478 CMD_ASYNC, sizeof(*data.rsc),
479 data.rsc);
480 else
481 ret = 0;
482 kfree(data.rsc);
483 } else if (ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN) {
484 struct wowlan_key_rsc_tsc_data data = {};
485
486 data.rsc_tsc = kzalloc(sizeof(*data.rsc_tsc), GFP_KERNEL);
487 if (!data.rsc_tsc)
488 return -ENOMEM;
489
490 ieee80211_iter_keys(mvm->hw, vif,
491 iwl_mvm_wowlan_get_rsc_tsc_data,
492 &data);
493
494 if (data.have_rsc_tsc)
495 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM,
496 CMD_ASYNC,
497 sizeof(*data.rsc_tsc),
498 data.rsc_tsc);
499 else
500 ret = 0;
501 kfree(data.rsc_tsc);
502 } else {
503 ret = 0;
504 WARN_ON_ONCE(1);
505 }
506
507 return ret;
508 }
509
510 struct wowlan_key_tkip_data {
511 struct iwl_wowlan_tkip_params_cmd tkip;
512 bool have_tkip_keys;
513 };
514
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)515 static void iwl_mvm_wowlan_get_tkip_data(struct ieee80211_hw *hw,
516 struct ieee80211_vif *vif,
517 struct ieee80211_sta *sta,
518 struct ieee80211_key_conf *key,
519 void *_data)
520 {
521 struct wowlan_key_tkip_data *data = _data;
522 struct iwl_p1k_cache *rx_p1ks;
523 u8 *rx_mic_key;
524 struct ieee80211_key_seq seq;
525 u32 cur_rx_iv32 = 0;
526 u16 p1k[IWL_P1K_SIZE];
527 int i;
528
529 switch (key->cipher) {
530 default:
531 break;
532 case WLAN_CIPHER_SUITE_TKIP:
533 if (sta) {
534 u64 pn64;
535
536 rx_p1ks = data->tkip.rx_uni;
537
538 pn64 = atomic64_read(&key->tx_pn);
539
540 ieee80211_get_tkip_p1k_iv(key, TKIP_PN_TO_IV32(pn64),
541 p1k);
542 iwl_mvm_convert_p1k(p1k, data->tkip.tx.p1k);
543
544 memcpy(data->tkip.mic_keys.tx,
545 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
546 IWL_MIC_KEY_SIZE);
547
548 rx_mic_key = data->tkip.mic_keys.rx_unicast;
549 } else {
550 rx_p1ks = data->tkip.rx_multi;
551 rx_mic_key = data->tkip.mic_keys.rx_mcast;
552 }
553
554 for (i = 0; i < IWL_NUM_RSC; i++) {
555 ieee80211_get_key_rx_seq(key, i, &seq);
556 /* wrapping isn't allowed, AP must rekey */
557 if (seq.tkip.iv32 > cur_rx_iv32)
558 cur_rx_iv32 = seq.tkip.iv32;
559 }
560
561 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
562 cur_rx_iv32, p1k);
563 iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k);
564 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
565 cur_rx_iv32 + 1, p1k);
566 iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k);
567
568 memcpy(rx_mic_key,
569 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
570 IWL_MIC_KEY_SIZE);
571
572 data->have_tkip_keys = true;
573 break;
574 }
575 }
576
577 struct wowlan_key_gtk_type_iter {
578 struct iwl_wowlan_kek_kck_material_cmd_v4 *kek_kck_cmd;
579 };
580
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)581 static void iwl_mvm_wowlan_gtk_type_iter(struct ieee80211_hw *hw,
582 struct ieee80211_vif *vif,
583 struct ieee80211_sta *sta,
584 struct ieee80211_key_conf *key,
585 void *_data)
586 {
587 struct wowlan_key_gtk_type_iter *data = _data;
588 __le32 *cipher = NULL;
589
590 if (key->keyidx == 4 || key->keyidx == 5)
591 cipher = &data->kek_kck_cmd->igtk_cipher;
592 if (key->keyidx == 6 || key->keyidx == 7)
593 cipher = &data->kek_kck_cmd->bigtk_cipher;
594
595 switch (key->cipher) {
596 default:
597 return;
598 case WLAN_CIPHER_SUITE_TKIP:
599 if (!sta)
600 data->kek_kck_cmd->gtk_cipher =
601 cpu_to_le32(STA_KEY_FLG_TKIP);
602 return;
603 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
604 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
605 if (cipher)
606 *cipher = cpu_to_le32(STA_KEY_FLG_GCMP);
607 return;
608 case WLAN_CIPHER_SUITE_AES_CMAC:
609 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
610 if (cipher)
611 *cipher = cpu_to_le32(STA_KEY_FLG_CCM);
612 return;
613 case WLAN_CIPHER_SUITE_CCMP:
614 if (!sta)
615 data->kek_kck_cmd->gtk_cipher =
616 cpu_to_le32(STA_KEY_FLG_CCM);
617 return;
618 case WLAN_CIPHER_SUITE_GCMP:
619 case WLAN_CIPHER_SUITE_GCMP_256:
620 if (!sta)
621 data->kek_kck_cmd->gtk_cipher =
622 cpu_to_le32(STA_KEY_FLG_GCMP);
623 return;
624 }
625 }
626
iwl_mvm_send_patterns_v1(struct iwl_mvm * mvm,struct cfg80211_wowlan * wowlan)627 static int iwl_mvm_send_patterns_v1(struct iwl_mvm *mvm,
628 struct cfg80211_wowlan *wowlan)
629 {
630 struct iwl_wowlan_patterns_cmd_v1 *pattern_cmd;
631 struct iwl_host_cmd cmd = {
632 .id = WOWLAN_PATTERNS,
633 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
634 };
635 int i, err;
636
637 if (!wowlan->n_patterns)
638 return 0;
639
640 cmd.len[0] = struct_size(pattern_cmd, patterns, wowlan->n_patterns);
641
642 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
643 if (!pattern_cmd)
644 return -ENOMEM;
645
646 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
647
648 for (i = 0; i < wowlan->n_patterns; i++) {
649 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
650
651 memcpy(&pattern_cmd->patterns[i].mask,
652 wowlan->patterns[i].mask, mask_len);
653 memcpy(&pattern_cmd->patterns[i].pattern,
654 wowlan->patterns[i].pattern,
655 wowlan->patterns[i].pattern_len);
656 pattern_cmd->patterns[i].mask_size = mask_len;
657 pattern_cmd->patterns[i].pattern_size =
658 wowlan->patterns[i].pattern_len;
659 }
660
661 cmd.data[0] = pattern_cmd;
662 err = iwl_mvm_send_cmd(mvm, &cmd);
663 kfree(pattern_cmd);
664 return err;
665 }
666
iwl_mvm_send_patterns(struct iwl_mvm * mvm,struct iwl_mvm_vif_link_info * mvm_link,struct cfg80211_wowlan * wowlan)667 static int iwl_mvm_send_patterns(struct iwl_mvm *mvm,
668 struct iwl_mvm_vif_link_info *mvm_link,
669 struct cfg80211_wowlan *wowlan)
670 {
671 struct iwl_wowlan_patterns_cmd *pattern_cmd;
672 struct iwl_host_cmd cmd = {
673 .id = WOWLAN_PATTERNS,
674 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
675 };
676 int i, err;
677 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id,
678 IWL_FW_CMD_VER_UNKNOWN);
679
680 if (!wowlan->n_patterns)
681 return 0;
682
683 cmd.len[0] = sizeof(*pattern_cmd) +
684 wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern_v2);
685
686 pattern_cmd = kzalloc(cmd.len[0], GFP_KERNEL);
687 if (!pattern_cmd)
688 return -ENOMEM;
689
690 pattern_cmd->n_patterns = wowlan->n_patterns;
691 if (ver >= 3)
692 pattern_cmd->sta_id = mvm_link->ap_sta_id;
693
694 for (i = 0; i < wowlan->n_patterns; i++) {
695 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
696
697 pattern_cmd->patterns[i].pattern_type =
698 WOWLAN_PATTERN_TYPE_BITMASK;
699
700 memcpy(&pattern_cmd->patterns[i].u.bitmask.mask,
701 wowlan->patterns[i].mask, mask_len);
702 memcpy(&pattern_cmd->patterns[i].u.bitmask.pattern,
703 wowlan->patterns[i].pattern,
704 wowlan->patterns[i].pattern_len);
705 pattern_cmd->patterns[i].u.bitmask.mask_size = mask_len;
706 pattern_cmd->patterns[i].u.bitmask.pattern_size =
707 wowlan->patterns[i].pattern_len;
708 }
709
710 cmd.data[0] = pattern_cmd;
711 err = iwl_mvm_send_cmd(mvm, &cmd);
712 kfree(pattern_cmd);
713 return err;
714 }
715
iwl_mvm_d3_reprogram(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * ap_sta)716 static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
717 struct ieee80211_sta *ap_sta)
718 {
719 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
720 struct ieee80211_chanctx_conf *ctx;
721 u8 chains_static, chains_dynamic;
722 struct cfg80211_chan_def chandef, ap_def;
723 int ret, i;
724 struct iwl_binding_cmd_v1 binding_cmd = {};
725 struct iwl_time_quota_cmd quota_cmd = {};
726 struct iwl_time_quota_data *quota;
727 u32 status;
728
729 if (WARN_ON_ONCE(iwl_mvm_is_cdb_supported(mvm) ||
730 ieee80211_vif_is_mld(vif)))
731 return -EINVAL;
732
733 /* add back the PHY */
734 if (WARN_ON(!mvmvif->deflink.phy_ctxt))
735 return -EINVAL;
736
737 rcu_read_lock();
738 ctx = rcu_dereference(vif->bss_conf.chanctx_conf);
739 if (WARN_ON(!ctx)) {
740 rcu_read_unlock();
741 return -EINVAL;
742 }
743 chandef = ctx->def;
744 ap_def = ctx->ap;
745 chains_static = ctx->rx_chains_static;
746 chains_dynamic = ctx->rx_chains_dynamic;
747 rcu_read_unlock();
748
749 ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->deflink.phy_ctxt, &chandef,
750 &ap_def, chains_static, chains_dynamic);
751 if (ret)
752 return ret;
753
754 /* add back the MAC */
755 mvmvif->uploaded = false;
756
757 if (WARN_ON(!vif->cfg.assoc))
758 return -EINVAL;
759
760 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
761 if (ret)
762 return ret;
763
764 /* add back binding - XXX refactor? */
765 binding_cmd.id_and_color =
766 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id,
767 mvmvif->deflink.phy_ctxt->color));
768 binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD);
769 binding_cmd.phy =
770 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id,
771 mvmvif->deflink.phy_ctxt->color));
772 binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
773 mvmvif->color));
774 for (i = 1; i < MAX_MACS_IN_BINDING; i++)
775 binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID);
776
777 status = 0;
778 ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD,
779 IWL_BINDING_CMD_SIZE_V1, &binding_cmd,
780 &status);
781 if (ret) {
782 IWL_ERR(mvm, "Failed to add binding: %d\n", ret);
783 return ret;
784 }
785
786 if (status) {
787 IWL_ERR(mvm, "Binding command failed: %u\n", status);
788 return -EIO;
789 }
790
791 ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false, 0);
792 if (ret)
793 return ret;
794 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->deflink.ap_sta_id],
795 ap_sta);
796
797 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
798 if (ret)
799 return ret;
800
801 /* and some quota */
802 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, 0);
803 quota->id_and_color =
804 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id,
805 mvmvif->deflink.phy_ctxt->color));
806 quota->quota = cpu_to_le32(IWL_MVM_MAX_QUOTA);
807 quota->max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA);
808
809 for (i = 1; i < MAX_BINDINGS; i++) {
810 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, i);
811 quota->id_and_color = cpu_to_le32(FW_CTXT_INVALID);
812 }
813
814 ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0,
815 iwl_mvm_quota_cmd_size(mvm), "a_cmd);
816 if (ret)
817 IWL_ERR(mvm, "Failed to send quota: %d\n", ret);
818
819 if (iwl_mvm_is_lar_supported(mvm) && iwl_mvm_init_fw_regd(mvm, false))
820 IWL_ERR(mvm, "Failed to initialize D3 LAR information\n");
821
822 return 0;
823 }
824
iwl_mvm_get_last_nonqos_seq(struct iwl_mvm * mvm,struct ieee80211_vif * vif)825 static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm,
826 struct ieee80211_vif *vif)
827 {
828 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
829 struct iwl_nonqos_seq_query_cmd query_cmd = {
830 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET),
831 .mac_id_n_color =
832 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
833 mvmvif->color)),
834 };
835 struct iwl_host_cmd cmd = {
836 .id = NON_QOS_TX_COUNTER_CMD,
837 .flags = CMD_WANT_SKB,
838 };
839 int err;
840 u32 size;
841
842 cmd.data[0] = &query_cmd;
843 cmd.len[0] = sizeof(query_cmd);
844
845 err = iwl_mvm_send_cmd(mvm, &cmd);
846 if (err)
847 return err;
848
849 size = iwl_rx_packet_payload_len(cmd.resp_pkt);
850 if (size < sizeof(__le16)) {
851 err = -EINVAL;
852 } else {
853 err = le16_to_cpup((__le16 *)cmd.resp_pkt->data);
854 /* firmware returns next, not last-used seqno */
855 err = (u16) (err - 0x10);
856 }
857
858 iwl_free_resp(&cmd);
859 return err;
860 }
861
iwl_mvm_set_last_nonqos_seq(struct iwl_mvm * mvm,struct ieee80211_vif * vif)862 void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
863 {
864 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
865 struct iwl_nonqos_seq_query_cmd query_cmd = {
866 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET),
867 .mac_id_n_color =
868 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
869 mvmvif->color)),
870 .value = cpu_to_le16(mvmvif->seqno),
871 };
872
873 /* return if called during restart, not resume from D3 */
874 if (!mvmvif->seqno_valid)
875 return;
876
877 mvmvif->seqno_valid = false;
878
879 if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0,
880 sizeof(query_cmd), &query_cmd))
881 IWL_ERR(mvm, "failed to set non-QoS seqno\n");
882 }
883
iwl_mvm_switch_to_d3(struct iwl_mvm * mvm)884 static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm)
885 {
886 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
887
888 iwl_mvm_stop_device(mvm);
889 /*
890 * Set the HW restart bit -- this is mostly true as we're
891 * going to load new firmware and reprogram that, though
892 * the reprogramming is going to be manual to avoid adding
893 * all the MACs that aren't support.
894 * We don't have to clear up everything though because the
895 * reprogramming is manual. When we resume, we'll actually
896 * go through a proper restart sequence again to switch
897 * back to the runtime firmware image.
898 */
899 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
900
901 /* the fw is reset, so all the keys are cleared */
902 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
903
904 mvm->ptk_ivlen = 0;
905 mvm->ptk_icvlen = 0;
906 mvm->ptk_ivlen = 0;
907 mvm->ptk_icvlen = 0;
908
909 return iwl_mvm_load_d3_fw(mvm);
910 }
911
912 static int
iwl_mvm_get_wowlan_config(struct iwl_mvm * mvm,struct cfg80211_wowlan * wowlan,struct iwl_wowlan_config_cmd_v6 * wowlan_config_cmd,struct ieee80211_vif * vif,struct iwl_mvm_vif * mvmvif,struct ieee80211_sta * ap_sta)913 iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm,
914 struct cfg80211_wowlan *wowlan,
915 struct iwl_wowlan_config_cmd_v6 *wowlan_config_cmd,
916 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
917 struct ieee80211_sta *ap_sta)
918 {
919 struct iwl_mvm_sta *mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
920
921 /* TODO: wowlan_config_cmd->wowlan_ba_teardown_tids */
922
923 wowlan_config_cmd->is_11n_connection =
924 ap_sta->deflink.ht_cap.ht_supported;
925 wowlan_config_cmd->flags = ENABLE_L3_FILTERING |
926 ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING;
927
928 if (ap_sta->mfp)
929 wowlan_config_cmd->flags |= IS_11W_ASSOC;
930
931 if (rcu_access_pointer(mvmvif->bcn_prot.keys[0]) ||
932 rcu_access_pointer(mvmvif->bcn_prot.keys[1]))
933 wowlan_config_cmd->flags |= HAS_BEACON_PROTECTION;
934
935 if (iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_CONFIGURATION, 0) < 6) {
936 /* Query the last used seqno and set it */
937 int ret = iwl_mvm_get_last_nonqos_seq(mvm, vif);
938
939 if (ret < 0)
940 return ret;
941
942 wowlan_config_cmd->non_qos_seq = cpu_to_le16(ret);
943 }
944
945 if (iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_CONFIGURATION, 0) < 7)
946 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, wowlan_config_cmd);
947
948 if (wowlan->disconnect)
949 wowlan_config_cmd->wakeup_filter |=
950 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
951 IWL_WOWLAN_WAKEUP_LINK_CHANGE);
952 if (wowlan->magic_pkt)
953 wowlan_config_cmd->wakeup_filter |=
954 cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET);
955 if (wowlan->gtk_rekey_failure)
956 wowlan_config_cmd->wakeup_filter |=
957 cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
958 if (wowlan->eap_identity_req)
959 wowlan_config_cmd->wakeup_filter |=
960 cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ);
961 if (wowlan->four_way_handshake)
962 wowlan_config_cmd->wakeup_filter |=
963 cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
964 if (wowlan->n_patterns)
965 wowlan_config_cmd->wakeup_filter |=
966 cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH);
967
968 if (wowlan->rfkill_release)
969 wowlan_config_cmd->wakeup_filter |=
970 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
971
972 if (wowlan->tcp) {
973 /*
974 * Set the "link change" (really "link lost") flag as well
975 * since that implies losing the TCP connection.
976 */
977 wowlan_config_cmd->wakeup_filter |=
978 cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS |
979 IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE |
980 IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET |
981 IWL_WOWLAN_WAKEUP_LINK_CHANGE);
982 }
983
984 if (wowlan->any) {
985 wowlan_config_cmd->wakeup_filter |=
986 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
987 IWL_WOWLAN_WAKEUP_LINK_CHANGE |
988 IWL_WOWLAN_WAKEUP_RX_FRAME |
989 IWL_WOWLAN_WAKEUP_BCN_FILTERING);
990 }
991
992 return 0;
993 }
994
iwl_mvm_wowlan_config_key_params(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_mvm_vif_link_info * mvm_link)995 static int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm,
996 struct ieee80211_vif *vif,
997 struct iwl_mvm_vif_link_info *mvm_link)
998 {
999 bool unified = fw_has_capa(&mvm->fw->ucode_capa,
1000 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1001 struct wowlan_key_reprogram_data key_data = {};
1002 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1003 int ret;
1004 u8 cmd_ver;
1005 size_t cmd_size;
1006
1007 if (!unified) {
1008 /*
1009 * if we have to configure keys, call ieee80211_iter_keys(),
1010 * as we need non-atomic context in order to take the
1011 * required locks.
1012 */
1013 /*
1014 * Note that currently we don't use CMD_ASYNC in the iterator.
1015 * In case of key_data.configure_keys, all the configured
1016 * commands are SYNC, and iwl_mvm_wowlan_program_keys() will
1017 * take care of locking/unlocking mvm->mutex.
1018 */
1019 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_program_keys,
1020 &key_data);
1021
1022 if (key_data.error)
1023 return -EIO;
1024 }
1025
1026 ret = iwl_mvm_wowlan_config_rsc_tsc(mvm, vif, mvm_link);
1027 if (ret)
1028 return ret;
1029
1030 if (!fw_has_api(&mvm->fw->ucode_capa,
1031 IWL_UCODE_TLV_API_TKIP_MIC_KEYS)) {
1032 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TKIP_PARAM,
1033 IWL_FW_CMD_VER_UNKNOWN);
1034 struct wowlan_key_tkip_data tkip_data = {};
1035 int size;
1036
1037 if (ver == 2) {
1038 size = sizeof(tkip_data.tkip);
1039 tkip_data.tkip.sta_id =
1040 cpu_to_le32(mvm_link->ap_sta_id);
1041 } else if (ver == 1 || ver == IWL_FW_CMD_VER_UNKNOWN) {
1042 size = sizeof(struct iwl_wowlan_tkip_params_cmd_ver_1);
1043 } else {
1044 WARN_ON_ONCE(1);
1045 return -EINVAL;
1046 }
1047
1048 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_get_tkip_data,
1049 &tkip_data);
1050
1051 if (tkip_data.have_tkip_keys) {
1052 /* send relevant data according to CMD version */
1053 ret = iwl_mvm_send_cmd_pdu(mvm,
1054 WOWLAN_TKIP_PARAM,
1055 CMD_ASYNC, size,
1056 &tkip_data.tkip);
1057 if (ret)
1058 return ret;
1059 }
1060 }
1061
1062 /* configure rekey data only if offloaded rekey is supported (d3) */
1063 if (mvmvif->rekey_data.valid) {
1064 struct iwl_wowlan_kek_kck_material_cmd_v4 kek_kck_cmd = {};
1065 struct iwl_wowlan_kek_kck_material_cmd_v4 *_kek_kck_cmd =
1066 &kek_kck_cmd;
1067 struct wowlan_key_gtk_type_iter gtk_type_data = {
1068 .kek_kck_cmd = _kek_kck_cmd,
1069 };
1070
1071 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,
1072 WOWLAN_KEK_KCK_MATERIAL,
1073 IWL_FW_CMD_VER_UNKNOWN);
1074 if (WARN_ON(cmd_ver != 2 && cmd_ver != 3 && cmd_ver != 4 &&
1075 cmd_ver != IWL_FW_CMD_VER_UNKNOWN))
1076 return -EINVAL;
1077
1078 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_gtk_type_iter,
1079 >k_type_data);
1080
1081 memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck,
1082 mvmvif->rekey_data.kck_len);
1083 kek_kck_cmd.kck_len = cpu_to_le16(mvmvif->rekey_data.kck_len);
1084 memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek,
1085 mvmvif->rekey_data.kek_len);
1086 kek_kck_cmd.kek_len = cpu_to_le16(mvmvif->rekey_data.kek_len);
1087 kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr;
1088 kek_kck_cmd.akm = cpu_to_le32(mvmvif->rekey_data.akm);
1089 kek_kck_cmd.sta_id = cpu_to_le32(mvm_link->ap_sta_id);
1090
1091 if (cmd_ver == 4) {
1092 cmd_size = sizeof(struct iwl_wowlan_kek_kck_material_cmd_v4);
1093 } else {
1094 if (cmd_ver == 3)
1095 cmd_size =
1096 sizeof(struct iwl_wowlan_kek_kck_material_cmd_v3);
1097 else
1098 cmd_size =
1099 sizeof(struct iwl_wowlan_kek_kck_material_cmd_v2);
1100 /* skip the sta_id at the beginning */
1101 _kek_kck_cmd = (void *)
1102 ((u8 *)_kek_kck_cmd + sizeof(kek_kck_cmd.sta_id));
1103 }
1104
1105 IWL_DEBUG_WOWLAN(mvm, "setting akm %d\n",
1106 mvmvif->rekey_data.akm);
1107
1108 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_KEK_KCK_MATERIAL,
1109 CMD_ASYNC, cmd_size, _kek_kck_cmd);
1110 if (ret)
1111 return ret;
1112 }
1113
1114 return 0;
1115 }
1116
1117 static int
iwl_mvm_wowlan_config(struct iwl_mvm * mvm,struct cfg80211_wowlan * wowlan,struct iwl_wowlan_config_cmd_v6 * wowlan_config_cmd_v6,struct ieee80211_vif * vif,struct iwl_mvm_vif * mvmvif,struct iwl_mvm_vif_link_info * mvm_link,struct ieee80211_sta * ap_sta)1118 iwl_mvm_wowlan_config(struct iwl_mvm *mvm,
1119 struct cfg80211_wowlan *wowlan,
1120 struct iwl_wowlan_config_cmd_v6 *wowlan_config_cmd_v6,
1121 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
1122 struct iwl_mvm_vif_link_info *mvm_link,
1123 struct ieee80211_sta *ap_sta)
1124 {
1125 int ret;
1126 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1127 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1128
1129 mvm->offload_tid = wowlan_config_cmd_v6->offloading_tid;
1130
1131 if (!unified_image) {
1132 ret = iwl_mvm_switch_to_d3(mvm);
1133 if (ret)
1134 return ret;
1135
1136 ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta);
1137 if (ret)
1138 return ret;
1139 }
1140
1141 ret = iwl_mvm_wowlan_config_key_params(mvm, vif, mvm_link);
1142 if (ret)
1143 return ret;
1144
1145 if (iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_CONFIGURATION, 0) > 6) {
1146 struct iwl_wowlan_config_cmd wowlan_config_cmd = {
1147 .wakeup_filter = wowlan_config_cmd_v6->wakeup_filter,
1148 .wowlan_ba_teardown_tids =
1149 wowlan_config_cmd_v6->wowlan_ba_teardown_tids,
1150 .is_11n_connection =
1151 wowlan_config_cmd_v6->is_11n_connection,
1152 .offloading_tid = wowlan_config_cmd_v6->offloading_tid,
1153 .flags = wowlan_config_cmd_v6->flags,
1154 .sta_id = wowlan_config_cmd_v6->sta_id,
1155 };
1156
1157 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0,
1158 sizeof(wowlan_config_cmd),
1159 &wowlan_config_cmd);
1160 } else {
1161 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0,
1162 sizeof(*wowlan_config_cmd_v6),
1163 wowlan_config_cmd_v6);
1164 }
1165 if (ret)
1166 return ret;
1167
1168 if (fw_has_api(&mvm->fw->ucode_capa,
1169 IWL_UCODE_TLV_API_WOWLAN_TCP_SYN_WAKE))
1170 ret = iwl_mvm_send_patterns(mvm, mvm_link, wowlan);
1171 else
1172 ret = iwl_mvm_send_patterns_v1(mvm, wowlan);
1173 if (ret)
1174 return ret;
1175
1176 return iwl_mvm_send_proto_offload(mvm, vif, false, true, 0,
1177 mvm_link->ap_sta_id);
1178 }
1179
1180 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)1181 iwl_mvm_netdetect_config(struct iwl_mvm *mvm,
1182 struct cfg80211_wowlan *wowlan,
1183 struct cfg80211_sched_scan_request *nd_config,
1184 struct ieee80211_vif *vif)
1185 {
1186 int ret;
1187 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1188 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1189
1190 if (!unified_image) {
1191 ret = iwl_mvm_switch_to_d3(mvm);
1192 if (ret)
1193 return ret;
1194 } else {
1195 /* In theory, we wouldn't have to stop a running sched
1196 * scan in order to start another one (for
1197 * net-detect). But in practice this doesn't seem to
1198 * work properly, so stop any running sched_scan now.
1199 */
1200 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
1201 if (ret)
1202 return ret;
1203 }
1204
1205 ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies,
1206 IWL_MVM_SCAN_NETDETECT);
1207 if (ret)
1208 return ret;
1209
1210 if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels))
1211 return -EBUSY;
1212
1213 /* save the sched scan matchsets... */
1214 if (nd_config->n_match_sets) {
1215 mvm->nd_match_sets = kmemdup(nd_config->match_sets,
1216 sizeof(*nd_config->match_sets) *
1217 nd_config->n_match_sets,
1218 GFP_KERNEL);
1219 if (mvm->nd_match_sets)
1220 mvm->n_nd_match_sets = nd_config->n_match_sets;
1221 }
1222
1223 /* ...and the sched scan channels for later reporting */
1224 mvm->nd_channels = kmemdup(nd_config->channels,
1225 sizeof(*nd_config->channels) *
1226 nd_config->n_channels,
1227 GFP_KERNEL);
1228 if (mvm->nd_channels)
1229 mvm->n_nd_channels = nd_config->n_channels;
1230
1231 return 0;
1232 }
1233
iwl_mvm_free_nd(struct iwl_mvm * mvm)1234 static void iwl_mvm_free_nd(struct iwl_mvm *mvm)
1235 {
1236 kfree(mvm->nd_match_sets);
1237 mvm->nd_match_sets = NULL;
1238 mvm->n_nd_match_sets = 0;
1239 kfree(mvm->nd_channels);
1240 mvm->nd_channels = NULL;
1241 mvm->n_nd_channels = 0;
1242 }
1243
__iwl_mvm_suspend(struct ieee80211_hw * hw,struct cfg80211_wowlan * wowlan)1244 static int __iwl_mvm_suspend(struct ieee80211_hw *hw,
1245 struct cfg80211_wowlan *wowlan)
1246 {
1247 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1248 struct ieee80211_vif *vif = NULL;
1249 struct iwl_mvm_vif *mvmvif = NULL;
1250 struct ieee80211_sta *ap_sta = NULL;
1251 struct iwl_mvm_vif_link_info *mvm_link;
1252 struct iwl_d3_manager_config d3_cfg_cmd = {
1253 /*
1254 * Program the minimum sleep time to 10 seconds, as many
1255 * platforms have issues processing a wakeup signal while
1256 * still being in the process of suspending.
1257 */
1258 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000),
1259 };
1260 int ret;
1261 int len __maybe_unused;
1262 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1263 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1264
1265 if (!wowlan) {
1266 /* mac80211 shouldn't get here */
1267 WARN_ON(1);
1268 return -EINVAL;
1269 }
1270
1271 vif = iwl_mvm_get_bss_vif(mvm);
1272 if (IS_ERR_OR_NULL(vif))
1273 return 1;
1274
1275 mutex_lock(&mvm->mutex);
1276
1277 set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
1278
1279 synchronize_net();
1280
1281 mvmvif = iwl_mvm_vif_from_mac80211(vif);
1282
1283 mvm_link = mvmvif->link[iwl_mvm_get_primary_link(vif)];
1284 if (WARN_ON_ONCE(!mvm_link)) {
1285 ret = -EINVAL;
1286 goto out_noreset;
1287 }
1288
1289 if (mvm_link->ap_sta_id == IWL_INVALID_STA) {
1290 /* if we're not associated, this must be netdetect */
1291 if (!wowlan->nd_config) {
1292 ret = 1;
1293 goto out_noreset;
1294 }
1295
1296 ret = iwl_mvm_netdetect_config(
1297 mvm, wowlan, wowlan->nd_config, vif);
1298 if (ret)
1299 goto out;
1300
1301 mvm->net_detect = true;
1302 } else {
1303 struct iwl_wowlan_config_cmd_v6 wowlan_config_cmd = {
1304 .offloading_tid = 0,
1305 };
1306
1307 wowlan_config_cmd.sta_id = mvm_link->ap_sta_id;
1308
1309 ap_sta = rcu_dereference_protected(
1310 mvm->fw_id_to_mac_id[mvm_link->ap_sta_id],
1311 lockdep_is_held(&mvm->mutex));
1312 if (IS_ERR_OR_NULL(ap_sta)) {
1313 ret = -EINVAL;
1314 goto out_noreset;
1315 }
1316
1317 ret = iwl_mvm_sta_ensure_queue(
1318 mvm, ap_sta->txq[wowlan_config_cmd.offloading_tid]);
1319 if (ret)
1320 goto out_noreset;
1321
1322 ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1323 vif, mvmvif, ap_sta);
1324 if (ret)
1325 goto out_noreset;
1326 ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1327 vif, mvmvif, mvm_link, ap_sta);
1328 if (ret)
1329 goto out;
1330
1331 mvm->net_detect = false;
1332 }
1333
1334 ret = iwl_mvm_power_update_device(mvm);
1335 if (ret)
1336 goto out;
1337
1338 ret = iwl_mvm_power_update_mac(mvm);
1339 if (ret)
1340 goto out;
1341
1342 #ifdef CONFIG_IWLWIFI_DEBUGFS
1343 if (mvm->d3_wake_sysassert)
1344 d3_cfg_cmd.wakeup_flags |=
1345 cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR);
1346 #endif
1347
1348 /*
1349 * Prior to 9000 device family the driver needs to stop the dbg
1350 * recording before entering D3. In later devices the FW stops the
1351 * recording automatically.
1352 */
1353 if (mvm->trans->mac_cfg->device_family < IWL_DEVICE_FAMILY_9000)
1354 iwl_fw_dbg_stop_restart_recording(&mvm->fwrt, NULL, true);
1355
1356 /* must be last -- this switches firmware state */
1357 ret = iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD, 0, sizeof(d3_cfg_cmd),
1358 &d3_cfg_cmd);
1359 if (ret)
1360 goto out;
1361
1362 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1363
1364 ret = iwl_trans_d3_suspend(mvm->trans, !unified_image);
1365 out:
1366 if (ret < 0) {
1367 iwl_mvm_free_nd(mvm);
1368
1369 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
1370 }
1371 out_noreset:
1372 mutex_unlock(&mvm->mutex);
1373
1374 return ret;
1375 }
1376
iwl_mvm_suspend(struct ieee80211_hw * hw,struct cfg80211_wowlan * wowlan)1377 int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
1378 {
1379 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1380
1381 iwl_mvm_pause_tcm(mvm, true);
1382
1383 mutex_lock(&mvm->mutex);
1384 iwl_fw_runtime_suspend(&mvm->fwrt);
1385 mutex_unlock(&mvm->mutex);
1386
1387 return __iwl_mvm_suspend(hw, wowlan);
1388 }
1389
1390 struct iwl_multicast_key_data {
1391 u8 key[WOWLAN_KEY_MAX_SIZE];
1392 u8 len;
1393 u8 flags;
1394 u8 id;
1395 u8 ipn[6];
1396 };
1397
1398 /* converted data from the different status responses */
1399 struct iwl_wowlan_status_data {
1400 u64 replay_ctr;
1401 u32 num_of_gtk_rekeys;
1402 u32 received_beacons;
1403 u32 wakeup_reasons;
1404 u32 wake_packet_length;
1405 u32 wake_packet_bufsize;
1406 u16 pattern_number;
1407 u16 non_qos_seq_ctr;
1408 u16 qos_seq_ctr[8];
1409 u8 tid_tear_down;
1410 u8 tid_offloaded_tx;
1411
1412 struct {
1413 /* including RX MIC key for TKIP */
1414 u8 key[WOWLAN_KEY_MAX_SIZE];
1415 u8 len;
1416 u8 flags;
1417 u8 id;
1418 } gtk[WOWLAN_GTK_KEYS_NUM];
1419
1420 struct {
1421 /*
1422 * We store both the TKIP and AES representations
1423 * coming from the firmware because we decode the
1424 * data from there before we iterate the keys and
1425 * know which one we need.
1426 */
1427 struct {
1428 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT];
1429 } tkip, aes;
1430
1431 /*
1432 * We use -1 for when we have valid data but don't know
1433 * the key ID from firmware, and thus it needs to be
1434 * installed with the last key (depending on rekeying).
1435 */
1436 s8 key_id;
1437 bool valid;
1438 } gtk_seq[2];
1439
1440 struct {
1441 /* Same as above */
1442 struct {
1443 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT];
1444 u64 tx_pn;
1445 } tkip, aes;
1446 } ptk;
1447
1448 struct iwl_multicast_key_data igtk;
1449 struct iwl_multicast_key_data bigtk[WOWLAN_BIGTK_KEYS_NUM];
1450
1451 u8 *wake_packet;
1452 };
1453
iwl_mvm_report_wakeup_reasons(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_wowlan_status_data * status)1454 static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm,
1455 struct ieee80211_vif *vif,
1456 struct iwl_wowlan_status_data *status)
1457 {
1458 struct sk_buff *pkt = NULL;
1459 struct cfg80211_wowlan_wakeup wakeup = {
1460 .pattern_idx = -1,
1461 };
1462 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
1463 u32 reasons = status->wakeup_reasons;
1464
1465 if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
1466 wakeup_report = NULL;
1467 goto report;
1468 }
1469
1470 pm_wakeup_event(mvm->dev, 0);
1471
1472 if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET)
1473 wakeup.magic_pkt = true;
1474
1475 if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN)
1476 wakeup.pattern_idx =
1477 status->pattern_number;
1478
1479 if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1480 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH |
1481 IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE))
1482 wakeup.disconnect = true;
1483
1484 if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)
1485 wakeup.gtk_rekey_failure = true;
1486
1487 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
1488 wakeup.rfkill_release = true;
1489
1490 if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST)
1491 wakeup.eap_identity_req = true;
1492
1493 if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE)
1494 wakeup.four_way_handshake = true;
1495
1496 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS)
1497 wakeup.tcp_connlost = true;
1498
1499 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE)
1500 wakeup.tcp_nomoretokens = true;
1501
1502 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET)
1503 wakeup.tcp_match = true;
1504
1505 if (reasons & IWL_WAKEUP_BY_11W_UNPROTECTED_DEAUTH_OR_DISASSOC)
1506 wakeup.unprot_deauth_disassoc = true;
1507
1508 if (status->wake_packet) {
1509 int pktsize = status->wake_packet_bufsize;
1510 int pktlen = status->wake_packet_length;
1511 const u8 *pktdata = status->wake_packet;
1512 const struct ieee80211_hdr *hdr = (const void *)pktdata;
1513 int truncated = pktlen - pktsize;
1514
1515 /* this would be a firmware bug */
1516 if (WARN_ON_ONCE(truncated < 0))
1517 truncated = 0;
1518
1519 if (ieee80211_is_data(hdr->frame_control)) {
1520 int hdrlen = ieee80211_hdrlen(hdr->frame_control);
1521 int ivlen = 0, icvlen = 4; /* also FCS */
1522
1523 pkt = alloc_skb(pktsize, GFP_KERNEL);
1524 if (!pkt)
1525 goto report;
1526
1527 skb_put_data(pkt, pktdata, hdrlen);
1528 pktdata += hdrlen;
1529 pktsize -= hdrlen;
1530
1531 if (ieee80211_has_protected(hdr->frame_control)) {
1532 /*
1533 * This is unlocked and using gtk_i(c)vlen,
1534 * but since everything is under RTNL still
1535 * that's not really a problem - changing
1536 * it would be difficult.
1537 */
1538 if (is_multicast_ether_addr(hdr->addr1)) {
1539 ivlen = mvm->gtk_ivlen;
1540 icvlen += mvm->gtk_icvlen;
1541 } else {
1542 ivlen = mvm->ptk_ivlen;
1543 icvlen += mvm->ptk_icvlen;
1544 }
1545 }
1546
1547 /* if truncated, FCS/ICV is (partially) gone */
1548 if (truncated >= icvlen) {
1549 icvlen = 0;
1550 truncated -= icvlen;
1551 } else {
1552 icvlen -= truncated;
1553 truncated = 0;
1554 }
1555
1556 pktsize -= ivlen + icvlen;
1557 pktdata += ivlen;
1558
1559 skb_put_data(pkt, pktdata, pktsize);
1560
1561 if (ieee80211_data_to_8023(pkt, vif->addr, vif->type))
1562 goto report;
1563 wakeup.packet = pkt->data;
1564 wakeup.packet_present_len = pkt->len;
1565 wakeup.packet_len = pkt->len - truncated;
1566 wakeup.packet_80211 = false;
1567 } else {
1568 int fcslen = 4;
1569
1570 if (truncated >= 4) {
1571 truncated -= 4;
1572 fcslen = 0;
1573 } else {
1574 fcslen -= truncated;
1575 truncated = 0;
1576 }
1577 pktsize -= fcslen;
1578 wakeup.packet = status->wake_packet;
1579 wakeup.packet_present_len = pktsize;
1580 wakeup.packet_len = pktlen - truncated;
1581 wakeup.packet_80211 = true;
1582 }
1583 }
1584
1585 report:
1586 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
1587 kfree_skb(pkt);
1588 }
1589
iwl_mvm_le64_to_aes_seq(__le64 le_pn,struct ieee80211_key_seq * seq)1590 static void iwl_mvm_le64_to_aes_seq(__le64 le_pn, struct ieee80211_key_seq *seq)
1591 {
1592 u64 pn = le64_to_cpu(le_pn);
1593
1594 seq->ccmp.pn[0] = pn >> 40;
1595 seq->ccmp.pn[1] = pn >> 32;
1596 seq->ccmp.pn[2] = pn >> 24;
1597 seq->ccmp.pn[3] = pn >> 16;
1598 seq->ccmp.pn[4] = pn >> 8;
1599 seq->ccmp.pn[5] = pn;
1600 }
1601
iwl_mvm_aes_sc_to_seq(struct aes_sc * sc,struct ieee80211_key_seq * seq)1602 static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc,
1603 struct ieee80211_key_seq *seq)
1604 {
1605 iwl_mvm_le64_to_aes_seq(sc->pn, seq);
1606 }
1607
iwl_mvm_le64_to_tkip_seq(__le64 le_pn,struct ieee80211_key_seq * seq)1608 static void iwl_mvm_le64_to_tkip_seq(__le64 le_pn, struct ieee80211_key_seq *seq)
1609 {
1610 u64 pn = le64_to_cpu(le_pn);
1611
1612 seq->tkip.iv16 = (u16)pn;
1613 seq->tkip.iv32 = (u32)(pn >> 16);
1614 }
1615
iwl_mvm_tkip_sc_to_seq(struct tkip_sc * sc,struct ieee80211_key_seq * seq)1616 static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc,
1617 struct ieee80211_key_seq *seq)
1618 {
1619 seq->tkip.iv32 = le32_to_cpu(sc->iv32);
1620 seq->tkip.iv16 = le16_to_cpu(sc->iv16);
1621 }
1622
iwl_mvm_set_key_rx_seq_tids(struct ieee80211_key_conf * key,struct ieee80211_key_seq * seq)1623 static void iwl_mvm_set_key_rx_seq_tids(struct ieee80211_key_conf *key,
1624 struct ieee80211_key_seq *seq)
1625 {
1626 int tid;
1627
1628 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++)
1629 ieee80211_set_key_rx_seq(key, tid, &seq[tid]);
1630 }
1631
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)1632 static void iwl_mvm_set_aes_ptk_rx_seq(struct iwl_mvm *mvm,
1633 struct iwl_wowlan_status_data *status,
1634 struct ieee80211_sta *sta,
1635 struct ieee80211_key_conf *key)
1636 {
1637 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1638 struct iwl_mvm_key_pn *ptk_pn;
1639 int tid;
1640
1641 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.aes.seq);
1642
1643 if (!iwl_mvm_has_new_rx_api(mvm))
1644 return;
1645
1646
1647 rcu_read_lock();
1648 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]);
1649 if (WARN_ON(!ptk_pn)) {
1650 rcu_read_unlock();
1651 return;
1652 }
1653
1654 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1655 int i;
1656
1657 for (i = 1; i < mvm->trans->info.num_rxqs; i++)
1658 memcpy(ptk_pn->q[i].pn[tid],
1659 status->ptk.aes.seq[tid].ccmp.pn,
1660 IEEE80211_CCMP_PN_LEN);
1661 }
1662 rcu_read_unlock();
1663 }
1664
iwl_mvm_convert_key_counters(struct iwl_wowlan_status_data * status,union iwl_all_tsc_rsc * sc,u8 key_idx)1665 static void iwl_mvm_convert_key_counters(struct iwl_wowlan_status_data *status,
1666 union iwl_all_tsc_rsc *sc, u8 key_idx)
1667 {
1668 int i;
1669
1670 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT);
1671 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC);
1672
1673 /* GTK RX counters */
1674 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1675 iwl_mvm_tkip_sc_to_seq(&sc->tkip.multicast_rsc[i],
1676 &status->gtk_seq[0].tkip.seq[i]);
1677 iwl_mvm_aes_sc_to_seq(&sc->aes.multicast_rsc[i],
1678 &status->gtk_seq[0].aes.seq[i]);
1679 }
1680 status->gtk_seq[0].valid = true;
1681 status->gtk_seq[0].key_id = key_idx;
1682
1683 /* PTK TX counter */
1684 status->ptk.tkip.tx_pn = (u64)le16_to_cpu(sc->tkip.tsc.iv16) |
1685 ((u64)le32_to_cpu(sc->tkip.tsc.iv32) << 16);
1686 status->ptk.aes.tx_pn = le64_to_cpu(sc->aes.tsc.pn);
1687
1688 /* PTK RX counters */
1689 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1690 iwl_mvm_tkip_sc_to_seq(&sc->tkip.unicast_rsc[i],
1691 &status->ptk.tkip.seq[i]);
1692 iwl_mvm_aes_sc_to_seq(&sc->aes.unicast_rsc[i],
1693 &status->ptk.aes.seq[i]);
1694 }
1695 }
1696
1697 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)1698 iwl_mvm_convert_key_counters_v5_gtk_seq(struct iwl_wowlan_status_data *status,
1699 struct iwl_wowlan_all_rsc_tsc_v5 *sc,
1700 unsigned int idx, unsigned int key_id)
1701 {
1702 int tid;
1703
1704 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1705 iwl_mvm_le64_to_tkip_seq(sc->mcast_rsc[idx][tid],
1706 &status->gtk_seq[idx].tkip.seq[tid]);
1707 iwl_mvm_le64_to_aes_seq(sc->mcast_rsc[idx][tid],
1708 &status->gtk_seq[idx].aes.seq[tid]);
1709 }
1710
1711 status->gtk_seq[idx].valid = true;
1712 status->gtk_seq[idx].key_id = key_id;
1713 }
1714
1715 static void
iwl_mvm_convert_key_counters_v5(struct iwl_wowlan_status_data * status,struct iwl_wowlan_all_rsc_tsc_v5 * sc)1716 iwl_mvm_convert_key_counters_v5(struct iwl_wowlan_status_data *status,
1717 struct iwl_wowlan_all_rsc_tsc_v5 *sc)
1718 {
1719 int i, tid;
1720
1721 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT);
1722 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC);
1723 BUILD_BUG_ON(ARRAY_SIZE(sc->mcast_rsc) != ARRAY_SIZE(status->gtk_seq));
1724
1725 /* GTK RX counters */
1726 for (i = 0; i < ARRAY_SIZE(sc->mcast_key_id_map); i++) {
1727 u8 entry = sc->mcast_key_id_map[i];
1728
1729 if (entry < ARRAY_SIZE(sc->mcast_rsc))
1730 iwl_mvm_convert_key_counters_v5_gtk_seq(status, sc,
1731 entry, i);
1732 }
1733
1734 /* PTK TX counters not needed, assigned in device */
1735
1736 /* PTK RX counters */
1737 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1738 iwl_mvm_le64_to_tkip_seq(sc->ucast_rsc[tid],
1739 &status->ptk.tkip.seq[tid]);
1740 iwl_mvm_le64_to_aes_seq(sc->ucast_rsc[tid],
1741 &status->ptk.aes.seq[tid]);
1742 }
1743 }
1744
iwl_mvm_set_key_rx_seq_idx(struct ieee80211_key_conf * key,struct iwl_wowlan_status_data * status,int idx)1745 static void iwl_mvm_set_key_rx_seq_idx(struct ieee80211_key_conf *key,
1746 struct iwl_wowlan_status_data *status,
1747 int idx)
1748 {
1749 switch (key->cipher) {
1750 case WLAN_CIPHER_SUITE_CCMP:
1751 case WLAN_CIPHER_SUITE_GCMP:
1752 case WLAN_CIPHER_SUITE_GCMP_256:
1753 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].aes.seq);
1754 break;
1755 case WLAN_CIPHER_SUITE_TKIP:
1756 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].tkip.seq);
1757 break;
1758 default:
1759 WARN_ON(1);
1760 }
1761 }
1762
iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf * key,struct iwl_wowlan_status_data * status)1763 static void iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf *key,
1764 struct iwl_wowlan_status_data *status)
1765 {
1766 int i;
1767
1768 for (i = 0; i < ARRAY_SIZE(status->gtk_seq); i++) {
1769 if (!status->gtk_seq[i].valid)
1770 continue;
1771
1772 if (status->gtk_seq[i].key_id == key->keyidx)
1773 iwl_mvm_set_key_rx_seq_idx(key, status, i);
1774 }
1775 }
1776
1777 struct iwl_mvm_d3_gtk_iter_data {
1778 struct iwl_mvm *mvm;
1779 struct iwl_wowlan_status_data *status;
1780 };
1781
1782 static void
iwl_mvm_d3_set_igtk_bigtk_ipn(const struct iwl_multicast_key_data * key,struct ieee80211_key_seq * seq,u32 cipher)1783 iwl_mvm_d3_set_igtk_bigtk_ipn(const struct iwl_multicast_key_data *key,
1784 struct ieee80211_key_seq *seq, u32 cipher)
1785 {
1786 switch (cipher) {
1787 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
1788 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
1789 BUILD_BUG_ON(sizeof(seq->aes_gmac.pn) != sizeof(key->ipn));
1790 memcpy(seq->aes_gmac.pn, key->ipn, sizeof(seq->aes_gmac.pn));
1791 break;
1792 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
1793 case WLAN_CIPHER_SUITE_AES_CMAC:
1794 BUILD_BUG_ON(sizeof(seq->aes_cmac.pn) != sizeof(key->ipn));
1795 memcpy(seq->aes_cmac.pn, key->ipn, sizeof(seq->aes_cmac.pn));
1796 break;
1797 default:
1798 WARN_ON(1);
1799 }
1800 }
1801
1802 static void
iwl_mvm_d3_update_igtk_bigtk(struct iwl_wowlan_status_data * status,struct ieee80211_key_conf * key,struct iwl_multicast_key_data * key_data)1803 iwl_mvm_d3_update_igtk_bigtk(struct iwl_wowlan_status_data *status,
1804 struct ieee80211_key_conf *key,
1805 struct iwl_multicast_key_data *key_data)
1806 {
1807 struct ieee80211_key_seq seq;
1808
1809 iwl_mvm_d3_set_igtk_bigtk_ipn(key_data, &seq, key->cipher);
1810 ieee80211_set_key_rx_seq(key, 0, &seq);
1811 }
1812
iwl_mvm_d3_update_keys(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key,void * _data)1813 static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw,
1814 struct ieee80211_vif *vif,
1815 struct ieee80211_sta *sta,
1816 struct ieee80211_key_conf *key,
1817 void *_data)
1818 {
1819 struct iwl_mvm_d3_gtk_iter_data *data = _data;
1820 struct iwl_wowlan_status_data *status = data->status;
1821 s8 keyidx;
1822 int link_id = vif->active_links ? __ffs(vif->active_links) : -1;
1823
1824 if (link_id >= 0 && key->link_id >= 0 && link_id != key->link_id)
1825 return;
1826
1827 switch (key->cipher) {
1828 case WLAN_CIPHER_SUITE_WEP40:
1829 case WLAN_CIPHER_SUITE_WEP104:
1830 /* ignore WEP completely, nothing to do */
1831 return;
1832 case WLAN_CIPHER_SUITE_CCMP:
1833 case WLAN_CIPHER_SUITE_GCMP:
1834 case WLAN_CIPHER_SUITE_GCMP_256:
1835 if (sta) {
1836 atomic64_set(&key->tx_pn, status->ptk.aes.tx_pn);
1837 iwl_mvm_set_aes_ptk_rx_seq(data->mvm, status, sta, key);
1838 return;
1839 }
1840 fallthrough;
1841 case WLAN_CIPHER_SUITE_TKIP:
1842 if (sta) {
1843 atomic64_set(&key->tx_pn, status->ptk.tkip.tx_pn);
1844 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.tkip.seq);
1845 return;
1846 }
1847 keyidx = key->keyidx;
1848 /*
1849 * Update the seq even if there was a rekey. If there was a
1850 * rekey, we will update again after replacing the key
1851 */
1852 if ((status->gtk[0].len && keyidx == status->gtk[0].id) ||
1853 (status->gtk[1].len && keyidx == status->gtk[1].id))
1854 iwl_mvm_set_key_rx_seq(key, status);
1855 break;
1856 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
1857 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
1858 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
1859 case WLAN_CIPHER_SUITE_AES_CMAC:
1860 if (key->keyidx == 4 || key->keyidx == 5) {
1861 iwl_mvm_d3_update_igtk_bigtk(status, key,
1862 &status->igtk);
1863 }
1864 if (key->keyidx == 6 || key->keyidx == 7) {
1865 u8 idx = key->keyidx == status->bigtk[1].id;
1866
1867 iwl_mvm_d3_update_igtk_bigtk(status, key,
1868 &status->bigtk[idx]);
1869 }
1870 }
1871 }
1872
iwl_mvm_gtk_rekey(struct iwl_wowlan_status_data * status,struct ieee80211_vif * vif,struct iwl_mvm * mvm)1873 static bool iwl_mvm_gtk_rekey(struct iwl_wowlan_status_data *status,
1874 struct ieee80211_vif *vif,
1875 struct iwl_mvm *mvm)
1876 {
1877 int i, j;
1878 struct ieee80211_key_conf *key;
1879 int link_id = vif->active_links ? __ffs(vif->active_links) : -1;
1880
1881 for (i = 0; i < ARRAY_SIZE(status->gtk); i++) {
1882 if (!status->gtk[i].len)
1883 continue;
1884
1885 IWL_DEBUG_WOWLAN(mvm,
1886 "Received from FW GTK: key index %d\n",
1887 status->gtk[i].id);
1888
1889 key = ieee80211_gtk_rekey_add(vif, status->gtk[i].id,
1890 status->gtk[i].key,
1891 sizeof(status->gtk[i].key),
1892 link_id);
1893 if (IS_ERR(key)) {
1894 /* FW may send also the old keys */
1895 if (PTR_ERR(key) == -EALREADY)
1896 continue;
1897 return false;
1898 }
1899
1900 for (j = 0; j < ARRAY_SIZE(status->gtk_seq); j++) {
1901 if (!status->gtk_seq[j].valid ||
1902 status->gtk_seq[j].key_id != key->keyidx)
1903 continue;
1904 iwl_mvm_set_key_rx_seq_idx(key, status, j);
1905 break;
1906 }
1907 WARN_ON(j == ARRAY_SIZE(status->gtk_seq));
1908 }
1909
1910 return true;
1911 }
1912
1913 static bool
iwl_mvm_d3_igtk_bigtk_rekey_add(struct iwl_wowlan_status_data * status,struct ieee80211_vif * vif,struct iwl_multicast_key_data * key_data)1914 iwl_mvm_d3_igtk_bigtk_rekey_add(struct iwl_wowlan_status_data *status,
1915 struct ieee80211_vif *vif,
1916 struct iwl_multicast_key_data *key_data)
1917 {
1918 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1919 struct ieee80211_key_conf *key_config;
1920 struct ieee80211_key_seq seq;
1921 int link_id = vif->active_links ? __ffs(vif->active_links) : -1;
1922 s8 keyidx = key_data->id;
1923
1924 if (!key_data->len)
1925 return true;
1926
1927 key_config = ieee80211_gtk_rekey_add(vif, keyidx, key_data->key,
1928 sizeof(key_data->key), link_id);
1929 if (IS_ERR(key_config)) {
1930 /* FW may send also the old keys */
1931 return PTR_ERR(key_config) == -EALREADY;
1932 }
1933
1934 iwl_mvm_d3_set_igtk_bigtk_ipn(key_data, &seq, key_config->cipher);
1935 ieee80211_set_key_rx_seq(key_config, 0, &seq);
1936
1937 if (keyidx == 4 || keyidx == 5) {
1938 struct iwl_mvm_vif_link_info *mvm_link;
1939
1940 link_id = link_id < 0 ? 0 : link_id;
1941 mvm_link = mvmvif->link[link_id];
1942 if (mvm_link->igtk)
1943 mvm_link->igtk->hw_key_idx = STA_KEY_IDX_INVALID;
1944 mvm_link->igtk = key_config;
1945 }
1946
1947 if (vif->type == NL80211_IFTYPE_STATION && (keyidx == 6 || keyidx == 7))
1948 rcu_assign_pointer(mvmvif->bcn_prot.keys[keyidx - 6],
1949 key_config);
1950
1951 return true;
1952 }
1953
iwl_mvm_lookup_wowlan_status_ver(struct iwl_mvm * mvm)1954 static int iwl_mvm_lookup_wowlan_status_ver(struct iwl_mvm *mvm)
1955 {
1956 u8 notif_ver;
1957
1958 if (!fw_has_api(&mvm->fw->ucode_capa,
1959 IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL))
1960 return 6;
1961
1962 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */
1963 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP,
1964 WOWLAN_GET_STATUSES, 0);
1965 if (!notif_ver)
1966 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
1967 WOWLAN_GET_STATUSES, 7);
1968
1969 return notif_ver;
1970 }
1971
iwl_mvm_setup_connection_keep(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_wowlan_status_data * status)1972 static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm,
1973 struct ieee80211_vif *vif,
1974 struct iwl_wowlan_status_data *status)
1975 {
1976 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1977 struct iwl_mvm_d3_gtk_iter_data gtkdata = {
1978 .mvm = mvm,
1979 .status = status,
1980 };
1981 int i;
1982 u32 disconnection_reasons =
1983 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1984 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH;
1985
1986 if (!status || !vif->bss_conf.bssid)
1987 return false;
1988 /*
1989 * invalidate all other GTKs that might still exist and update
1990 * the one that we used
1991 */
1992 ieee80211_iter_keys(mvm->hw, vif,
1993 iwl_mvm_d3_update_keys, >kdata);
1994
1995 if (status->num_of_gtk_rekeys) {
1996 __be64 replay_ctr = cpu_to_be64(status->replay_ctr);
1997
1998 IWL_DEBUG_WOWLAN(mvm, "num of GTK rekeying %d\n",
1999 status->num_of_gtk_rekeys);
2000
2001 if (!iwl_mvm_gtk_rekey(status, vif, mvm))
2002 return false;
2003
2004 if (!iwl_mvm_d3_igtk_bigtk_rekey_add(status, vif,
2005 &status->igtk))
2006 return false;
2007
2008 for (i = 0; i < ARRAY_SIZE(status->bigtk); i++) {
2009 if (!iwl_mvm_d3_igtk_bigtk_rekey_add(status, vif,
2010 &status->bigtk[i]))
2011 return false;
2012 }
2013
2014 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid,
2015 (void *)&replay_ctr, GFP_KERNEL);
2016 }
2017
2018 if (iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP,
2019 WOWLAN_GET_STATUSES,
2020 IWL_FW_CMD_VER_UNKNOWN) < 10) {
2021 mvmvif->seqno_valid = true;
2022 /* +0x10 because the set API expects next-to-use, not last-used */
2023 mvmvif->seqno = status->non_qos_seq_ctr + 0x10;
2024 }
2025
2026 if (status->wakeup_reasons & disconnection_reasons)
2027 return false;
2028
2029 return true;
2030 }
2031
iwl_mvm_convert_gtk_v2(struct iwl_wowlan_status_data * status,struct iwl_wowlan_gtk_status_v2 * data)2032 static void iwl_mvm_convert_gtk_v2(struct iwl_wowlan_status_data *status,
2033 struct iwl_wowlan_gtk_status_v2 *data)
2034 {
2035 BUILD_BUG_ON(sizeof(status->gtk[0].key) < sizeof(data->key));
2036 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY +
2037 sizeof(data->tkip_mic_key) >
2038 sizeof(status->gtk[0].key));
2039
2040 status->gtk[0].len = data->key_len;
2041 status->gtk[0].flags = data->key_flags;
2042 status->gtk[0].id = status->gtk[0].flags & IWL_WOWLAN_GTK_IDX_MASK;
2043
2044 memcpy(status->gtk[0].key, data->key, sizeof(data->key));
2045
2046 /* if it's as long as the TKIP encryption key, copy MIC key */
2047 if (status->gtk[0].len == NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY)
2048 memcpy(status->gtk[0].key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
2049 data->tkip_mic_key, sizeof(data->tkip_mic_key));
2050 }
2051
iwl_mvm_convert_gtk_v3(struct iwl_wowlan_status_data * status,struct iwl_wowlan_gtk_status_v3 * data)2052 static void iwl_mvm_convert_gtk_v3(struct iwl_wowlan_status_data *status,
2053 struct iwl_wowlan_gtk_status_v3 *data)
2054 {
2055 int data_idx, status_idx = 0;
2056
2057 BUILD_BUG_ON(sizeof(status->gtk[0].key) < sizeof(data[0].key));
2058 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY +
2059 sizeof(data[0].tkip_mic_key) >
2060 sizeof(status->gtk[0].key));
2061 BUILD_BUG_ON(ARRAY_SIZE(status->gtk) < WOWLAN_GTK_KEYS_NUM);
2062 for (data_idx = 0; data_idx < ARRAY_SIZE(status->gtk); data_idx++) {
2063 if (!(data[data_idx].key_len))
2064 continue;
2065 status->gtk[status_idx].len = data[data_idx].key_len;
2066 status->gtk[status_idx].flags = data[data_idx].key_flags;
2067 status->gtk[status_idx].id = status->gtk[status_idx].flags &
2068 IWL_WOWLAN_GTK_IDX_MASK;
2069
2070 memcpy(status->gtk[status_idx].key, data[data_idx].key,
2071 sizeof(data[data_idx].key));
2072
2073 /* if it's as long as the TKIP encryption key, copy MIC key */
2074 if (status->gtk[status_idx].len ==
2075 NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY)
2076 memcpy(status->gtk[status_idx].key +
2077 NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
2078 data[data_idx].tkip_mic_key,
2079 sizeof(data[data_idx].tkip_mic_key));
2080 status_idx++;
2081 }
2082 }
2083
iwl_mvm_convert_igtk(struct iwl_wowlan_status_data * status,struct iwl_wowlan_igtk_status_v1 * data)2084 static void iwl_mvm_convert_igtk(struct iwl_wowlan_status_data *status,
2085 struct iwl_wowlan_igtk_status_v1 *data)
2086 {
2087 int i;
2088
2089 BUILD_BUG_ON(sizeof(status->igtk.key) < sizeof(data->key));
2090 BUILD_BUG_ON(sizeof(status->igtk.ipn) != sizeof(data->ipn));
2091
2092 if (!data->key_len)
2093 return;
2094
2095 status->igtk.len = data->key_len;
2096 status->igtk.flags = data->key_flags;
2097 status->igtk.id = u32_get_bits(data->key_flags,
2098 IWL_WOWLAN_IGTK_BIGTK_IDX_MASK)
2099 + WOWLAN_IGTK_MIN_INDEX;
2100
2101 memcpy(status->igtk.key, data->key, sizeof(data->key));
2102
2103 /* mac80211 expects big endian for memcmp() to work, convert */
2104 for (i = 0; i < sizeof(data->ipn); i++)
2105 status->igtk.ipn[i] = data->ipn[sizeof(data->ipn) - i - 1];
2106 }
2107
iwl_mvm_convert_bigtk(struct iwl_wowlan_status_data * status,const struct iwl_wowlan_igtk_status_v1 * data)2108 static void iwl_mvm_convert_bigtk(struct iwl_wowlan_status_data *status,
2109 const struct iwl_wowlan_igtk_status_v1 *data)
2110 {
2111 int data_idx, status_idx = 0;
2112
2113 BUILD_BUG_ON(ARRAY_SIZE(status->bigtk) < WOWLAN_BIGTK_KEYS_NUM);
2114
2115 for (data_idx = 0; data_idx < WOWLAN_BIGTK_KEYS_NUM; data_idx++) {
2116 if (!data[data_idx].key_len)
2117 continue;
2118
2119 status->bigtk[status_idx].len = data[data_idx].key_len;
2120 status->bigtk[status_idx].flags = data[data_idx].key_flags;
2121 status->bigtk[status_idx].id =
2122 u32_get_bits(data[data_idx].key_flags,
2123 IWL_WOWLAN_IGTK_BIGTK_IDX_MASK)
2124 + WOWLAN_BIGTK_MIN_INDEX;
2125
2126 BUILD_BUG_ON(sizeof(status->bigtk[status_idx].key) <
2127 sizeof(data[data_idx].key));
2128 BUILD_BUG_ON(sizeof(status->bigtk[status_idx].ipn) <
2129 sizeof(data[data_idx].ipn));
2130
2131 memcpy(status->bigtk[status_idx].key, data[data_idx].key,
2132 sizeof(data[data_idx].key));
2133 memcpy(status->bigtk[status_idx].ipn, data[data_idx].ipn,
2134 sizeof(data[data_idx].ipn));
2135 status_idx++;
2136 }
2137 }
2138
iwl_mvm_parse_wowlan_info_notif(struct iwl_mvm * mvm,struct iwl_wowlan_info_notif_v5 * data,struct iwl_wowlan_status_data * status,u32 len)2139 static void iwl_mvm_parse_wowlan_info_notif(struct iwl_mvm *mvm,
2140 struct iwl_wowlan_info_notif_v5 *data,
2141 struct iwl_wowlan_status_data *status,
2142 u32 len)
2143 {
2144 if (IWL_FW_CHECK(mvm, data->num_mlo_link_keys,
2145 "MLO is not supported, shouldn't receive MLO keys\n"))
2146 return;
2147
2148 if (len < sizeof(*data)) {
2149 IWL_ERR(mvm, "Invalid WoWLAN info notification!\n");
2150 status = NULL;
2151 return;
2152 }
2153
2154 if (mvm->fast_resume)
2155 return;
2156
2157 iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc);
2158 iwl_mvm_convert_gtk_v3(status, data->gtk);
2159 iwl_mvm_convert_igtk(status, &data->igtk[0]);
2160 iwl_mvm_convert_bigtk(status, data->bigtk);
2161 status->replay_ctr = le64_to_cpu(data->replay_ctr);
2162 status->pattern_number = le16_to_cpu(data->pattern_number);
2163 status->tid_offloaded_tx = data->tid_offloaded_tx;
2164 if (IWL_FW_CHECK(mvm,
2165 data->tid_offloaded_tx >=
2166 ARRAY_SIZE(status->qos_seq_ctr),
2167 "tid_offloaded_tx is out of bound %d\n",
2168 data->tid_offloaded_tx))
2169 data->tid_offloaded_tx = 0;
2170 status->qos_seq_ctr[data->tid_offloaded_tx] =
2171 le16_to_cpu(data->qos_seq_ctr);
2172 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons);
2173 status->num_of_gtk_rekeys =
2174 le32_to_cpu(data->num_of_gtk_rekeys);
2175 status->received_beacons = le32_to_cpu(data->received_beacons);
2176 status->tid_tear_down = data->tid_tear_down;
2177 }
2178
2179 static void
iwl_mvm_parse_wowlan_info_notif_v3(struct iwl_mvm * mvm,struct iwl_wowlan_info_notif_v3 * data,struct iwl_wowlan_status_data * status,u32 len)2180 iwl_mvm_parse_wowlan_info_notif_v3(struct iwl_mvm *mvm,
2181 struct iwl_wowlan_info_notif_v3 *data,
2182 struct iwl_wowlan_status_data *status,
2183 u32 len)
2184 {
2185 u32 i;
2186
2187 if (len < sizeof(*data)) {
2188 IWL_ERR(mvm, "Invalid WoWLAN info notification!\n");
2189 status = NULL;
2190 return;
2191 }
2192
2193 if (mvm->fast_resume)
2194 return;
2195
2196 iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc);
2197 iwl_mvm_convert_gtk_v3(status, data->gtk);
2198 iwl_mvm_convert_igtk(status, &data->igtk[0]);
2199 iwl_mvm_convert_bigtk(status, data->bigtk);
2200 status->replay_ctr = le64_to_cpu(data->replay_ctr);
2201 status->pattern_number = le16_to_cpu(data->pattern_number);
2202 for (i = 0; i < IWL_MAX_TID_COUNT; i++)
2203 status->qos_seq_ctr[i] =
2204 le16_to_cpu(data->qos_seq_ctr[i]);
2205 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons);
2206 status->num_of_gtk_rekeys =
2207 le32_to_cpu(data->num_of_gtk_rekeys);
2208 status->received_beacons = le32_to_cpu(data->received_beacons);
2209 status->tid_tear_down = data->tid_tear_down;
2210 }
2211
2212 static void
iwl_mvm_parse_wowlan_info_notif_v1(struct iwl_mvm * mvm,struct iwl_wowlan_info_notif_v1 * data,struct iwl_wowlan_status_data * status,u32 len)2213 iwl_mvm_parse_wowlan_info_notif_v1(struct iwl_mvm *mvm,
2214 struct iwl_wowlan_info_notif_v1 *data,
2215 struct iwl_wowlan_status_data *status,
2216 u32 len)
2217 {
2218 u32 i;
2219
2220 if (len < sizeof(*data)) {
2221 IWL_ERR(mvm, "Invalid WoWLAN info notification!\n");
2222 status = NULL;
2223 return;
2224 }
2225
2226 iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc);
2227 iwl_mvm_convert_gtk_v3(status, data->gtk);
2228 iwl_mvm_convert_igtk(status, &data->igtk[0]);
2229 status->replay_ctr = le64_to_cpu(data->replay_ctr);
2230 status->pattern_number = le16_to_cpu(data->pattern_number);
2231 for (i = 0; i < IWL_MAX_TID_COUNT; i++)
2232 status->qos_seq_ctr[i] =
2233 le16_to_cpu(data->qos_seq_ctr[i]);
2234 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons);
2235 status->num_of_gtk_rekeys =
2236 le32_to_cpu(data->num_of_gtk_rekeys);
2237 status->received_beacons = le32_to_cpu(data->received_beacons);
2238 status->tid_tear_down = data->tid_tear_down;
2239 }
2240
2241 /* Occasionally, templates would be nice. This is one of those times ... */
2242 #define iwl_mvm_parse_wowlan_status_common(_ver) \
2243 static struct iwl_wowlan_status_data * \
2244 iwl_mvm_parse_wowlan_status_common_ ## _ver(struct iwl_mvm *mvm, \
2245 struct iwl_wowlan_status_ ##_ver *data,\
2246 int len) \
2247 { \
2248 struct iwl_wowlan_status_data *status; \
2249 int data_size, i; \
2250 \
2251 if (len < sizeof(*data)) { \
2252 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \
2253 return NULL; \
2254 } \
2255 \
2256 data_size = ALIGN(le32_to_cpu(data->wake_packet_bufsize), 4); \
2257 if (len != sizeof(*data) + data_size) { \
2258 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \
2259 return NULL; \
2260 } \
2261 \
2262 status = kzalloc(sizeof(*status), GFP_KERNEL); \
2263 if (!status) \
2264 return NULL; \
2265 \
2266 /* copy all the common fields */ \
2267 status->replay_ctr = le64_to_cpu(data->replay_ctr); \
2268 status->pattern_number = le16_to_cpu(data->pattern_number); \
2269 status->non_qos_seq_ctr = le16_to_cpu(data->non_qos_seq_ctr); \
2270 for (i = 0; i < 8; i++) \
2271 status->qos_seq_ctr[i] = \
2272 le16_to_cpu(data->qos_seq_ctr[i]); \
2273 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); \
2274 status->num_of_gtk_rekeys = \
2275 le32_to_cpu(data->num_of_gtk_rekeys); \
2276 status->received_beacons = le32_to_cpu(data->received_beacons); \
2277 status->wake_packet_length = \
2278 le32_to_cpu(data->wake_packet_length); \
2279 status->wake_packet_bufsize = \
2280 le32_to_cpu(data->wake_packet_bufsize); \
2281 if (status->wake_packet_bufsize) { \
2282 status->wake_packet = \
2283 kmemdup(data->wake_packet, \
2284 status->wake_packet_bufsize, \
2285 GFP_KERNEL); \
2286 if (!status->wake_packet) { \
2287 kfree(status); \
2288 return NULL; \
2289 } \
2290 } else { \
2291 status->wake_packet = NULL; \
2292 } \
2293 \
2294 return status; \
2295 }
2296
2297 iwl_mvm_parse_wowlan_status_common(v6)
iwl_mvm_parse_wowlan_status_common(v7)2298 iwl_mvm_parse_wowlan_status_common(v7)
2299
2300 static struct iwl_wowlan_status_data *
2301 iwl_mvm_send_wowlan_get_status(struct iwl_mvm *mvm, u8 sta_id)
2302 {
2303 struct iwl_wowlan_status_data *status;
2304 struct iwl_wowlan_get_status_cmd get_status_cmd = {
2305 .sta_id = cpu_to_le32(sta_id),
2306 };
2307 struct iwl_host_cmd cmd = {
2308 .id = WOWLAN_GET_STATUSES,
2309 .flags = CMD_WANT_SKB,
2310 .data = { &get_status_cmd, },
2311 .len = { sizeof(get_status_cmd), },
2312 };
2313 int ret, len;
2314 u8 notif_ver;
2315 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id,
2316 IWL_FW_CMD_VER_UNKNOWN);
2317
2318 if (cmd_ver == IWL_FW_CMD_VER_UNKNOWN)
2319 cmd.len[0] = 0;
2320
2321 lockdep_assert_held(&mvm->mutex);
2322
2323 ret = iwl_mvm_send_cmd(mvm, &cmd);
2324 if (ret) {
2325 IWL_ERR(mvm, "failed to query wakeup status (%d)\n", ret);
2326 return ERR_PTR(ret);
2327 }
2328
2329 len = iwl_rx_packet_payload_len(cmd.resp_pkt);
2330
2331 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */
2332 notif_ver = iwl_mvm_lookup_wowlan_status_ver(mvm);
2333
2334 if (notif_ver < 7) {
2335 struct iwl_wowlan_status_v6 *v6 = (void *)cmd.resp_pkt->data;
2336
2337 status = iwl_mvm_parse_wowlan_status_common_v6(mvm, v6, len);
2338 if (!status)
2339 goto out_free_resp;
2340
2341 BUILD_BUG_ON(sizeof(v6->gtk.decrypt_key) >
2342 sizeof(status->gtk[0].key));
2343 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY +
2344 sizeof(v6->gtk.tkip_mic_key) >
2345 sizeof(status->gtk[0].key));
2346
2347 /* copy GTK info to the right place */
2348 memcpy(status->gtk[0].key, v6->gtk.decrypt_key,
2349 sizeof(v6->gtk.decrypt_key));
2350 memcpy(status->gtk[0].key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
2351 v6->gtk.tkip_mic_key,
2352 sizeof(v6->gtk.tkip_mic_key));
2353
2354 iwl_mvm_convert_key_counters(status, &v6->gtk.rsc.all_tsc_rsc,
2355 v6->gtk.key_index);
2356
2357 /* hardcode the key length to 16 since v6 only supports 16 */
2358 status->gtk[0].len = 16;
2359
2360 /*
2361 * The key index only uses 2 bits (values 0 to 3) and
2362 * we always set bit 7 which means this is the
2363 * currently used key.
2364 */
2365 status->gtk[0].flags = v6->gtk.key_index | BIT(7);
2366 status->gtk[0].id = v6->gtk.key_index;
2367 } else if (notif_ver == 7) {
2368 struct iwl_wowlan_status_v7 *v7 = (void *)cmd.resp_pkt->data;
2369
2370 status = iwl_mvm_parse_wowlan_status_common_v7(mvm, v7, len);
2371 if (!status)
2372 goto out_free_resp;
2373
2374 iwl_mvm_convert_key_counters(status, &v7->gtk[0].rsc.all_tsc_rsc,
2375 v7->gtk[0].key_flags & IWL_WOWLAN_GTK_IDX_MASK);
2376 iwl_mvm_convert_gtk_v2(status, &v7->gtk[0]);
2377 iwl_mvm_convert_igtk(status, &v7->igtk[0]);
2378 } else {
2379 IWL_ERR(mvm,
2380 "Firmware advertises unknown WoWLAN status response %d!\n",
2381 notif_ver);
2382 status = NULL;
2383 }
2384
2385 out_free_resp:
2386 iwl_free_resp(&cmd);
2387 return status;
2388 }
2389
2390 /* releases the MVM mutex */
iwl_mvm_query_wakeup_reasons(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_wowlan_status_data * status)2391 static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm,
2392 struct ieee80211_vif *vif,
2393 struct iwl_wowlan_status_data *status)
2394 {
2395 int i;
2396 bool keep = false;
2397 struct iwl_mvm_sta *mvm_ap_sta;
2398 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2399 int link_id = vif->active_links ? __ffs(vif->active_links) : 0;
2400 struct iwl_mvm_vif_link_info *mvm_link = mvmvif->link[link_id];
2401 int wowlan_info_ver = iwl_fw_lookup_notif_ver(mvm->fw,
2402 PROT_OFFLOAD_GROUP,
2403 WOWLAN_INFO_NOTIFICATION,
2404 IWL_FW_CMD_VER_UNKNOWN);
2405
2406 if (WARN_ON(!mvm_link))
2407 goto out_unlock;
2408
2409 if (!status)
2410 goto out_unlock;
2411
2412 IWL_DEBUG_WOWLAN(mvm, "wakeup reason 0x%x\n",
2413 status->wakeup_reasons);
2414
2415 mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, mvm_link->ap_sta_id);
2416 if (!mvm_ap_sta)
2417 goto out_unlock;
2418
2419 /* firmware stores last-used value, we store next value */
2420 if (wowlan_info_ver >= 5) {
2421 mvm_ap_sta->tid_data[status->tid_offloaded_tx].seq_number =
2422 status->qos_seq_ctr[status->tid_offloaded_tx] + 0x10;
2423 } else {
2424 for (i = 0; i < IWL_MAX_TID_COUNT; i++)
2425 mvm_ap_sta->tid_data[i].seq_number =
2426 status->qos_seq_ctr[i] + 0x10;
2427 }
2428
2429 if (mvm->trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_22000) {
2430 i = mvm->offload_tid;
2431 iwl_trans_set_q_ptrs(mvm->trans,
2432 mvm_ap_sta->tid_data[i].txq_id,
2433 mvm_ap_sta->tid_data[i].seq_number >> 4);
2434 }
2435
2436 iwl_mvm_report_wakeup_reasons(mvm, vif, status);
2437
2438 keep = iwl_mvm_setup_connection_keep(mvm, vif, status);
2439 out_unlock:
2440 mutex_unlock(&mvm->mutex);
2441 return keep;
2442 }
2443
2444 #define ND_QUERY_BUF_LEN (sizeof(struct iwl_scan_offload_profile_match) * \
2445 IWL_SCAN_MAX_PROFILES)
2446
2447 struct iwl_mvm_nd_results {
2448 u32 matched_profiles;
2449 u8 matches[ND_QUERY_BUF_LEN];
2450 };
2451
2452 static int
iwl_mvm_netdetect_query_results(struct iwl_mvm * mvm,struct iwl_mvm_nd_results * results)2453 iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm,
2454 struct iwl_mvm_nd_results *results)
2455 {
2456 struct iwl_scan_offload_match_info *query;
2457 struct iwl_host_cmd cmd = {
2458 .id = SCAN_OFFLOAD_PROFILES_QUERY_CMD,
2459 .flags = CMD_WANT_SKB,
2460 };
2461 int ret, len;
2462 size_t query_len, matches_len;
2463 int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw);
2464
2465 ret = iwl_mvm_send_cmd(mvm, &cmd);
2466 if (ret) {
2467 IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret);
2468 return ret;
2469 }
2470
2471 if (fw_has_api(&mvm->fw->ucode_capa,
2472 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2473 query_len = sizeof(struct iwl_scan_offload_match_info);
2474 matches_len = sizeof(struct iwl_scan_offload_profile_match) *
2475 max_profiles;
2476 } else {
2477 query_len = sizeof(struct iwl_scan_offload_profiles_query_v1);
2478 matches_len = sizeof(struct iwl_scan_offload_profile_match_v1) *
2479 max_profiles;
2480 }
2481
2482 len = iwl_rx_packet_payload_len(cmd.resp_pkt);
2483 if (len < query_len) {
2484 IWL_ERR(mvm, "Invalid scan offload profiles query response!\n");
2485 ret = -EIO;
2486 goto out_free_resp;
2487 }
2488
2489 query = (void *)cmd.resp_pkt->data;
2490
2491 results->matched_profiles = le32_to_cpu(query->matched_profiles);
2492 memcpy(results->matches, query->matches, matches_len);
2493
2494 #ifdef CONFIG_IWLWIFI_DEBUGFS
2495 mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done);
2496 #endif
2497
2498 out_free_resp:
2499 iwl_free_resp(&cmd);
2500 return ret;
2501 }
2502
iwl_mvm_query_num_match_chans(struct iwl_mvm * mvm,struct iwl_mvm_nd_results * results,int idx)2503 static int iwl_mvm_query_num_match_chans(struct iwl_mvm *mvm,
2504 struct iwl_mvm_nd_results *results,
2505 int idx)
2506 {
2507 int n_chans = 0, i;
2508
2509 if (fw_has_api(&mvm->fw->ucode_capa,
2510 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2511 struct iwl_scan_offload_profile_match *matches =
2512 (void *)results->matches;
2513
2514 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; i++)
2515 n_chans += hweight8(matches[idx].matching_channels[i]);
2516 } else {
2517 struct iwl_scan_offload_profile_match_v1 *matches =
2518 (void *)results->matches;
2519
2520 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1; i++)
2521 n_chans += hweight8(matches[idx].matching_channels[i]);
2522 }
2523
2524 return n_chans;
2525 }
2526
iwl_mvm_query_set_freqs(struct iwl_mvm * mvm,struct iwl_mvm_nd_results * results,struct cfg80211_wowlan_nd_match * match,int idx)2527 static void iwl_mvm_query_set_freqs(struct iwl_mvm *mvm,
2528 struct iwl_mvm_nd_results *results,
2529 struct cfg80211_wowlan_nd_match *match,
2530 int idx)
2531 {
2532 int i;
2533 int n_channels = 0;
2534
2535 if (fw_has_api(&mvm->fw->ucode_capa,
2536 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2537 struct iwl_scan_offload_profile_match *matches =
2538 (void *)results->matches;
2539
2540 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; i++)
2541 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
2542 match->channels[n_channels++] =
2543 mvm->nd_channels[i]->center_freq;
2544 } else {
2545 struct iwl_scan_offload_profile_match_v1 *matches =
2546 (void *)results->matches;
2547
2548 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1 * 8; i++)
2549 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
2550 match->channels[n_channels++] =
2551 mvm->nd_channels[i]->center_freq;
2552 }
2553 /* We may have ended up with fewer channels than we allocated. */
2554 match->n_channels = n_channels;
2555 }
2556
2557 /**
2558 * enum iwl_d3_notif - d3 notifications
2559 * @IWL_D3_NOTIF_WOWLAN_INFO: WOWLAN_INFO_NOTIF was received
2560 * @IWL_D3_NOTIF_WOWLAN_WAKE_PKT: WOWLAN_WAKE_PKT_NOTIF was received
2561 * @IWL_D3_NOTIF_PROT_OFFLOAD: PROT_OFFLOAD_NOTIF was received
2562 * @IWL_D3_ND_MATCH_INFO: OFFLOAD_MATCH_INFO_NOTIF was received
2563 * @IWL_D3_NOTIF_D3_END_NOTIF: D3_END_NOTIF was received
2564 */
2565 enum iwl_d3_notif {
2566 IWL_D3_NOTIF_WOWLAN_INFO = BIT(0),
2567 IWL_D3_NOTIF_WOWLAN_WAKE_PKT = BIT(1),
2568 IWL_D3_NOTIF_PROT_OFFLOAD = BIT(2),
2569 IWL_D3_ND_MATCH_INFO = BIT(3),
2570 IWL_D3_NOTIF_D3_END_NOTIF = BIT(4)
2571 };
2572
2573 /* manage d3 resume data */
2574 struct iwl_d3_data {
2575 struct iwl_wowlan_status_data *status;
2576 u32 d3_end_flags;
2577 u32 notif_expected; /* bitmap - see &enum iwl_d3_notif */
2578 u32 notif_received; /* bitmap - see &enum iwl_d3_notif */
2579 struct iwl_mvm_nd_results *nd_results;
2580 bool nd_results_valid;
2581 };
2582
iwl_mvm_query_netdetect_reasons(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_d3_data * d3_data)2583 static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm,
2584 struct ieee80211_vif *vif,
2585 struct iwl_d3_data *d3_data)
2586 {
2587 struct cfg80211_wowlan_nd_info *net_detect = NULL;
2588 struct cfg80211_wowlan_wakeup wakeup = {
2589 .pattern_idx = -1,
2590 };
2591 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
2592 unsigned long matched_profiles;
2593 u32 reasons = 0;
2594 int i, n_matches, ret;
2595
2596 if (WARN_ON(!d3_data || !d3_data->status))
2597 goto out;
2598
2599 reasons = d3_data->status->wakeup_reasons;
2600
2601 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
2602 wakeup.rfkill_release = true;
2603
2604 if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS)
2605 goto out;
2606
2607 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
2608 WOWLAN_INFO_NOTIFICATION, 0)) {
2609 IWL_INFO(mvm, "Query FW for ND results\n");
2610 ret = iwl_mvm_netdetect_query_results(mvm, d3_data->nd_results);
2611
2612 } else {
2613 IWL_INFO(mvm, "Notification based ND results\n");
2614 ret = d3_data->nd_results_valid ? 0 : -1;
2615 }
2616
2617 if (ret || !d3_data->nd_results->matched_profiles) {
2618 wakeup_report = NULL;
2619 goto out;
2620 }
2621
2622 matched_profiles = d3_data->nd_results->matched_profiles;
2623 if (mvm->n_nd_match_sets) {
2624 n_matches = hweight_long(matched_profiles);
2625 } else {
2626 IWL_ERR(mvm, "no net detect match information available\n");
2627 n_matches = 0;
2628 }
2629
2630 net_detect = kzalloc(struct_size(net_detect, matches, n_matches),
2631 GFP_KERNEL);
2632 if (!net_detect || !n_matches)
2633 goto out_report_nd;
2634 net_detect->n_matches = n_matches;
2635 n_matches = 0;
2636
2637 for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) {
2638 struct cfg80211_wowlan_nd_match *match;
2639 int idx, n_channels = 0;
2640
2641 n_channels = iwl_mvm_query_num_match_chans(mvm,
2642 d3_data->nd_results,
2643 i);
2644
2645 match = kzalloc(struct_size(match, channels, n_channels),
2646 GFP_KERNEL);
2647 if (!match)
2648 goto out_report_nd;
2649 match->n_channels = n_channels;
2650
2651 net_detect->matches[n_matches++] = match;
2652
2653 /* We inverted the order of the SSIDs in the scan
2654 * request, so invert the index here.
2655 */
2656 idx = mvm->n_nd_match_sets - i - 1;
2657 match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len;
2658 memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid,
2659 match->ssid.ssid_len);
2660
2661 if (mvm->n_nd_channels < n_channels)
2662 continue;
2663
2664 iwl_mvm_query_set_freqs(mvm, d3_data->nd_results, match, i);
2665 }
2666 /* We may have fewer matches than we allocated. */
2667 net_detect->n_matches = n_matches;
2668
2669 out_report_nd:
2670 wakeup.net_detect = net_detect;
2671 out:
2672 iwl_mvm_free_nd(mvm);
2673
2674 mutex_unlock(&mvm->mutex);
2675 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
2676
2677 if (net_detect) {
2678 for (i = 0; i < net_detect->n_matches; i++)
2679 kfree(net_detect->matches[i]);
2680 kfree(net_detect);
2681 }
2682 }
2683
iwl_mvm_d3_disconnect_iter(void * data,u8 * mac,struct ieee80211_vif * vif)2684 static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac,
2685 struct ieee80211_vif *vif)
2686 {
2687 /* skip the one we keep connection on */
2688 if (data == vif)
2689 return;
2690
2691 if (vif->type == NL80211_IFTYPE_STATION)
2692 ieee80211_resume_disconnect(vif);
2693 }
2694
2695 enum rt_status {
2696 FW_ALIVE,
2697 FW_NEEDS_RESET,
2698 FW_ERROR,
2699 };
2700
iwl_mvm_check_rt_status(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2701 static enum rt_status iwl_mvm_check_rt_status(struct iwl_mvm *mvm,
2702 struct ieee80211_vif *vif)
2703 {
2704 u32 err_id;
2705
2706 /* check for lmac1 error */
2707 if (iwl_fwrt_read_err_table(mvm->trans,
2708 mvm->trans->dbg.lmac_error_event_table[0],
2709 &err_id)) {
2710 if (err_id == RF_KILL_INDICATOR_FOR_WOWLAN) {
2711 IWL_WARN(mvm, "Rfkill was toggled during suspend\n");
2712 if (vif) {
2713 struct cfg80211_wowlan_wakeup wakeup = {
2714 .rfkill_release = true,
2715 };
2716
2717 ieee80211_report_wowlan_wakeup(vif, &wakeup,
2718 GFP_KERNEL);
2719 }
2720
2721 return FW_NEEDS_RESET;
2722 }
2723 return FW_ERROR;
2724 }
2725
2726 /* check if we have lmac2 set and check for error */
2727 if (iwl_fwrt_read_err_table(mvm->trans,
2728 mvm->trans->dbg.lmac_error_event_table[1],
2729 NULL))
2730 return FW_ERROR;
2731
2732 /* check for umac error */
2733 if (iwl_fwrt_read_err_table(mvm->trans,
2734 mvm->trans->dbg.umac_error_event_table,
2735 NULL))
2736 return FW_ERROR;
2737
2738 return FW_ALIVE;
2739 }
2740
2741 /*
2742 * This function assumes:
2743 * 1. The mutex is already held.
2744 * 2. The callee functions unlock the mutex.
2745 */
2746 static bool
iwl_mvm_choose_query_wakeup_reasons(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_d3_data * d3_data)2747 iwl_mvm_choose_query_wakeup_reasons(struct iwl_mvm *mvm,
2748 struct ieee80211_vif *vif,
2749 struct iwl_d3_data *d3_data)
2750 {
2751 lockdep_assert_held(&mvm->mutex);
2752
2753 /* if FW uses status notification, status shouldn't be NULL here */
2754 if (!d3_data->status) {
2755 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2756 u8 sta_id = mvm->net_detect ? IWL_INVALID_STA :
2757 mvmvif->deflink.ap_sta_id;
2758
2759 /* bug - FW with MLO has status notification */
2760 WARN_ON(ieee80211_vif_is_mld(vif));
2761
2762 d3_data->status = iwl_mvm_send_wowlan_get_status(mvm, sta_id);
2763 }
2764
2765 if (mvm->net_detect) {
2766 iwl_mvm_query_netdetect_reasons(mvm, vif, d3_data);
2767 return false;
2768 }
2769
2770 return iwl_mvm_query_wakeup_reasons(mvm, vif,
2771 d3_data->status);
2772 }
2773
2774 #define IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT (IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET | \
2775 IWL_WOWLAN_WAKEUP_BY_PATTERN | \
2776 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN |\
2777 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN_WILDCARD |\
2778 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN |\
2779 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN_WILDCARD)
2780
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)2781 static int iwl_mvm_wowlan_store_wake_pkt(struct iwl_mvm *mvm,
2782 struct iwl_wowlan_wake_pkt_notif *notif,
2783 struct iwl_wowlan_status_data *status,
2784 u32 len)
2785 {
2786 u32 data_size, packet_len = le32_to_cpu(notif->wake_packet_length);
2787
2788 if (len < sizeof(*notif)) {
2789 IWL_ERR(mvm, "Invalid WoWLAN wake packet notification!\n");
2790 return -EIO;
2791 }
2792
2793 if (WARN_ON(!status)) {
2794 IWL_ERR(mvm, "Got wake packet notification but wowlan status data is NULL\n");
2795 return -EIO;
2796 }
2797
2798 if (WARN_ON(!(status->wakeup_reasons &
2799 IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT))) {
2800 IWL_ERR(mvm, "Got wakeup packet but wakeup reason is %x\n",
2801 status->wakeup_reasons);
2802 return -EIO;
2803 }
2804
2805 data_size = len - offsetof(struct iwl_wowlan_wake_pkt_notif, wake_packet);
2806
2807 /* data_size got the padding from the notification, remove it. */
2808 if (packet_len < data_size)
2809 data_size = packet_len;
2810
2811 status->wake_packet = kmemdup(notif->wake_packet, data_size,
2812 GFP_ATOMIC);
2813
2814 if (!status->wake_packet)
2815 return -ENOMEM;
2816
2817 status->wake_packet_length = packet_len;
2818 status->wake_packet_bufsize = data_size;
2819
2820 return 0;
2821 }
2822
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)2823 static void iwl_mvm_nd_match_info_handler(struct iwl_mvm *mvm,
2824 struct iwl_d3_data *d3_data,
2825 struct iwl_scan_offload_match_info *notif,
2826 u32 len)
2827 {
2828 struct iwl_wowlan_status_data *status = d3_data->status;
2829 struct ieee80211_vif *vif = iwl_mvm_get_bss_vif(mvm);
2830 struct iwl_mvm_nd_results *results = d3_data->nd_results;
2831 size_t i, matches_len = sizeof(struct iwl_scan_offload_profile_match) *
2832 iwl_umac_scan_get_max_profiles(mvm->fw);
2833
2834 if (IS_ERR_OR_NULL(vif))
2835 return;
2836
2837 if (len < sizeof(struct iwl_scan_offload_match_info)) {
2838 IWL_ERR(mvm, "Invalid scan match info notification\n");
2839 return;
2840 }
2841
2842 if (!mvm->net_detect) {
2843 IWL_ERR(mvm, "Unexpected scan match info notification\n");
2844 return;
2845 }
2846
2847 if (!status || status->wakeup_reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
2848 IWL_ERR(mvm,
2849 "Ignore scan match info notification: no reason\n");
2850 return;
2851 }
2852
2853 #ifdef CONFIG_IWLWIFI_DEBUGFS
2854 mvm->last_netdetect_scans = le32_to_cpu(notif->n_scans_done);
2855 #endif
2856
2857 results->matched_profiles = le32_to_cpu(notif->matched_profiles);
2858 IWL_INFO(mvm, "number of matched profiles=%u\n",
2859 results->matched_profiles);
2860
2861 if (results->matched_profiles) {
2862 memcpy(results->matches, notif->matches, matches_len);
2863 d3_data->nd_results_valid = true;
2864 }
2865
2866 /* no scan should be active at this point */
2867 mvm->scan_status = 0;
2868 for (i = 0; i < mvm->max_scans; i++)
2869 mvm->scan_uid_status[i] = 0;
2870 }
2871
iwl_mvm_wait_d3_notif(struct iwl_notif_wait_data * notif_wait,struct iwl_rx_packet * pkt,void * data)2872 static bool iwl_mvm_wait_d3_notif(struct iwl_notif_wait_data *notif_wait,
2873 struct iwl_rx_packet *pkt, void *data)
2874 {
2875 struct iwl_mvm *mvm =
2876 container_of(notif_wait, struct iwl_mvm, notif_wait);
2877 struct iwl_d3_data *d3_data = data;
2878 u32 len = iwl_rx_packet_payload_len(pkt);
2879 int ret;
2880 int wowlan_info_ver = iwl_fw_lookup_notif_ver(mvm->fw,
2881 PROT_OFFLOAD_GROUP,
2882 WOWLAN_INFO_NOTIFICATION,
2883 IWL_FW_CMD_VER_UNKNOWN);
2884
2885
2886 switch (WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) {
2887 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION): {
2888
2889 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_INFO) {
2890 /* We might get two notifications due to dual bss */
2891 IWL_DEBUG_WOWLAN(mvm,
2892 "Got additional wowlan info notification\n");
2893 break;
2894 }
2895
2896 if (wowlan_info_ver == 1) {
2897 struct iwl_wowlan_info_notif_v1 *notif_v1 =
2898 (void *)pkt->data;
2899
2900 iwl_mvm_parse_wowlan_info_notif_v1(mvm, notif_v1,
2901 d3_data->status,
2902 len);
2903 } else if (wowlan_info_ver == 3) {
2904 struct iwl_wowlan_info_notif_v3 *notif =
2905 (void *)pkt->data;
2906
2907 iwl_mvm_parse_wowlan_info_notif_v3(mvm, notif,
2908 d3_data->status, len);
2909 } else if (wowlan_info_ver == 5) {
2910 struct iwl_wowlan_info_notif_v5 *notif =
2911 (void *)pkt->data;
2912
2913 iwl_mvm_parse_wowlan_info_notif(mvm, notif,
2914 d3_data->status, len);
2915 } else {
2916 IWL_FW_CHECK(mvm, 1,
2917 "Firmware advertises unknown WoWLAN info notification %d!\n",
2918 wowlan_info_ver);
2919 return false;
2920 }
2921
2922 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_INFO;
2923
2924 if (d3_data->status &&
2925 d3_data->status->wakeup_reasons & IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT)
2926 /* We are supposed to get also wake packet notif */
2927 d3_data->notif_expected |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT;
2928
2929 break;
2930 }
2931 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION): {
2932 struct iwl_wowlan_wake_pkt_notif *notif = (void *)pkt->data;
2933
2934 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_WAKE_PKT) {
2935 /* We shouldn't get two wake packet notifications */
2936 IWL_ERR(mvm,
2937 "Got additional wowlan wake packet notification\n");
2938 } else {
2939 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT;
2940 len = iwl_rx_packet_payload_len(pkt);
2941 ret = iwl_mvm_wowlan_store_wake_pkt(mvm, notif,
2942 d3_data->status,
2943 len);
2944 if (ret)
2945 IWL_ERR(mvm,
2946 "Can't parse WOWLAN_WAKE_PKT_NOTIFICATION\n");
2947 }
2948
2949 break;
2950 }
2951 case WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF): {
2952 struct iwl_scan_offload_match_info *notif = (void *)pkt->data;
2953
2954 if (d3_data->notif_received & IWL_D3_ND_MATCH_INFO) {
2955 IWL_ERR(mvm,
2956 "Got additional netdetect match info\n");
2957 break;
2958 }
2959
2960 d3_data->notif_received |= IWL_D3_ND_MATCH_INFO;
2961
2962 /* explicitly set this in the 'expected' as well */
2963 d3_data->notif_expected |= IWL_D3_ND_MATCH_INFO;
2964
2965 len = iwl_rx_packet_payload_len(pkt);
2966 iwl_mvm_nd_match_info_handler(mvm, d3_data, notif, len);
2967 break;
2968 }
2969 case WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION): {
2970 struct iwl_d3_end_notif *notif = (void *)pkt->data;
2971
2972 d3_data->d3_end_flags = __le32_to_cpu(notif->flags);
2973 d3_data->notif_received |= IWL_D3_NOTIF_D3_END_NOTIF;
2974
2975 break;
2976 }
2977 default:
2978 WARN_ON(1);
2979 }
2980
2981 return d3_data->notif_received == d3_data->notif_expected;
2982 }
2983
iwl_mvm_resume_firmware(struct iwl_mvm * mvm)2984 static int iwl_mvm_resume_firmware(struct iwl_mvm *mvm)
2985 {
2986 int ret;
2987 struct iwl_host_cmd cmd = {
2988 .id = D0I3_END_CMD,
2989 .flags = CMD_WANT_SKB,
2990 };
2991 bool reset = fw_has_capa(&mvm->fw->ucode_capa,
2992 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2993
2994 ret = iwl_trans_d3_resume(mvm->trans, !reset);
2995 if (ret)
2996 return ret;
2997
2998 /*
2999 * We should trigger resume flow using command only for 22000 family
3000 * AX210 and above don't need the command since they have
3001 * the doorbell interrupt.
3002 */
3003 if (mvm->trans->mac_cfg->device_family <= IWL_DEVICE_FAMILY_22000 &&
3004 fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_D0I3_END_FIRST)) {
3005 ret = iwl_mvm_send_cmd(mvm, &cmd);
3006 if (ret < 0)
3007 IWL_ERR(mvm, "Failed to send D0I3_END_CMD first (%d)\n",
3008 ret);
3009 }
3010
3011 return ret;
3012 }
3013
3014 #define IWL_MVM_D3_NOTIF_TIMEOUT (HZ / 3)
3015
iwl_mvm_d3_notif_wait(struct iwl_mvm * mvm,struct iwl_d3_data * d3_data)3016 static int iwl_mvm_d3_notif_wait(struct iwl_mvm *mvm,
3017 struct iwl_d3_data *d3_data)
3018 {
3019 static const u16 d3_resume_notif[] = {
3020 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION),
3021 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION),
3022 WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF),
3023 WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION)
3024 };
3025 static const u16 d3_fast_resume_notif[] = {
3026 WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION)
3027 };
3028 struct iwl_notification_wait wait_d3_notif;
3029 int ret;
3030
3031 if (mvm->fast_resume)
3032 iwl_init_notification_wait(&mvm->notif_wait, &wait_d3_notif,
3033 d3_fast_resume_notif,
3034 ARRAY_SIZE(d3_fast_resume_notif),
3035 iwl_mvm_wait_d3_notif, d3_data);
3036 else
3037 iwl_init_notification_wait(&mvm->notif_wait, &wait_d3_notif,
3038 d3_resume_notif,
3039 ARRAY_SIZE(d3_resume_notif),
3040 iwl_mvm_wait_d3_notif, d3_data);
3041
3042 ret = iwl_mvm_resume_firmware(mvm);
3043 if (ret) {
3044 iwl_remove_notification(&mvm->notif_wait, &wait_d3_notif);
3045 return ret;
3046 }
3047
3048 return iwl_wait_notification(&mvm->notif_wait, &wait_d3_notif,
3049 IWL_MVM_D3_NOTIF_TIMEOUT);
3050 }
3051
iwl_mvm_d3_resume_notif_based(struct iwl_mvm * mvm)3052 static inline bool iwl_mvm_d3_resume_notif_based(struct iwl_mvm *mvm)
3053 {
3054 return iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
3055 WOWLAN_INFO_NOTIFICATION, 0) &&
3056 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
3057 WOWLAN_WAKE_PKT_NOTIFICATION, 0) &&
3058 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
3059 D3_END_NOTIFICATION, 0);
3060 }
3061
__iwl_mvm_resume(struct iwl_mvm * mvm)3062 static int __iwl_mvm_resume(struct iwl_mvm *mvm)
3063 {
3064 struct ieee80211_vif *vif = NULL;
3065 int ret = 1;
3066 struct iwl_mvm_nd_results results = {};
3067 struct iwl_d3_data d3_data = {
3068 .notif_expected =
3069 IWL_D3_NOTIF_WOWLAN_INFO |
3070 IWL_D3_NOTIF_D3_END_NOTIF,
3071 .nd_results_valid = false,
3072 .nd_results = &results,
3073 };
3074 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
3075 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
3076 bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa,
3077 IWL_UCODE_TLV_CAPA_D0I3_END_FIRST);
3078 bool resume_notif_based = iwl_mvm_d3_resume_notif_based(mvm);
3079 enum rt_status rt_status;
3080 bool keep = false;
3081
3082 mutex_lock(&mvm->mutex);
3083
3084 /* Apparently, the device went away and device_powered_off() was called,
3085 * don't even try to read the rt_status, the device is currently
3086 * inaccessible.
3087 */
3088 if (!test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) {
3089 IWL_INFO(mvm,
3090 "Can't resume, device_powered_off() was called during wowlan\n");
3091 goto err;
3092 }
3093
3094 mvm->last_reset_or_resume_time_jiffies = jiffies;
3095
3096 /* get the BSS vif pointer again */
3097 vif = iwl_mvm_get_bss_vif(mvm);
3098 if (IS_ERR_OR_NULL(vif))
3099 goto err;
3100
3101 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
3102
3103 rt_status = iwl_mvm_check_rt_status(mvm, vif);
3104 if (rt_status != FW_ALIVE) {
3105 iwl_trans_notify_fw_error(mvm->trans);
3106 if (rt_status == FW_ERROR) {
3107 IWL_ERR(mvm, "FW Error occurred during suspend. Restarting.\n");
3108 iwl_mvm_dump_nic_error_log(mvm);
3109 iwl_dbg_tlv_time_point(&mvm->fwrt,
3110 IWL_FW_INI_TIME_POINT_FW_ASSERT,
3111 NULL);
3112 iwl_fw_dbg_collect_desc(&mvm->fwrt,
3113 &iwl_dump_desc_assert,
3114 false, 0);
3115 }
3116 ret = 1;
3117 goto err;
3118 }
3119
3120 if (resume_notif_based) {
3121 d3_data.status = kzalloc(sizeof(*d3_data.status), GFP_KERNEL);
3122 if (!d3_data.status) {
3123 IWL_ERR(mvm, "Failed to allocate wowlan status\n");
3124 ret = -ENOMEM;
3125 goto err;
3126 }
3127
3128 ret = iwl_mvm_d3_notif_wait(mvm, &d3_data);
3129 if (ret)
3130 goto err;
3131 } else {
3132 ret = iwl_mvm_resume_firmware(mvm);
3133 if (ret < 0)
3134 goto err;
3135 }
3136
3137 /* when reset is required we can't send these following commands */
3138 if (d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)
3139 goto query_wakeup_reasons;
3140
3141 /*
3142 * Query the current location and source from the D3 firmware so we
3143 * can play it back when we re-intiailize the D0 firmware
3144 */
3145 iwl_mvm_update_changed_regdom(mvm);
3146
3147 /* Re-configure PPAG settings */
3148 iwl_mvm_ppag_send_cmd(mvm);
3149
3150 if (!unified_image)
3151 /* Re-configure default SAR profile */
3152 iwl_mvm_sar_select_profile(mvm, 1, 1);
3153
3154 if (mvm->net_detect && unified_image) {
3155 /* If this is a non-unified image, we restart the FW,
3156 * so no need to stop the netdetect scan. If that
3157 * fails, continue and try to get the wake-up reasons,
3158 * but trigger a HW restart by keeping a failure code
3159 * in ret.
3160 */
3161 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT,
3162 false);
3163 }
3164
3165 query_wakeup_reasons:
3166 keep = iwl_mvm_choose_query_wakeup_reasons(mvm, vif, &d3_data);
3167 /* has unlocked the mutex, so skip that */
3168 goto out;
3169
3170 err:
3171 mutex_unlock(&mvm->mutex);
3172 out:
3173 if (d3_data.status)
3174 kfree(d3_data.status->wake_packet);
3175 kfree(d3_data.status);
3176 iwl_mvm_free_nd(mvm);
3177
3178 if (!mvm->net_detect)
3179 ieee80211_iterate_active_interfaces_mtx(mvm->hw,
3180 IEEE80211_IFACE_ITER_NORMAL,
3181 iwl_mvm_d3_disconnect_iter,
3182 keep ? vif : NULL);
3183
3184 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
3185
3186 /* no need to reset the device in unified images, if successful */
3187 if (unified_image && !ret) {
3188 /* nothing else to do if we already sent D0I3_END_CMD */
3189 if (d0i3_first)
3190 return 0;
3191
3192 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
3193 D3_END_NOTIFICATION, 0)) {
3194 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL);
3195 if (!ret)
3196 return 0;
3197 } else if (!(d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)) {
3198 return 0;
3199 }
3200 }
3201
3202 /*
3203 * Reconfigure the device in one of the following cases:
3204 * 1. We are not using a unified image
3205 * 2. We are using a unified image but had an error while exiting D3
3206 */
3207 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
3208
3209 return 1;
3210 }
3211
iwl_mvm_resume(struct ieee80211_hw * hw)3212 int iwl_mvm_resume(struct ieee80211_hw *hw)
3213 {
3214 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3215 int ret;
3216
3217 ret = __iwl_mvm_resume(mvm);
3218
3219 iwl_mvm_resume_tcm(mvm);
3220
3221 iwl_fw_runtime_resume(&mvm->fwrt);
3222
3223 return ret;
3224 }
3225
iwl_mvm_set_wakeup(struct ieee80211_hw * hw,bool enabled)3226 void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled)
3227 {
3228 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3229
3230 device_set_wakeup_enable(mvm->trans->dev, enabled);
3231 }
3232
iwl_mvm_fast_suspend(struct iwl_mvm * mvm)3233 void iwl_mvm_fast_suspend(struct iwl_mvm *mvm)
3234 {
3235 struct iwl_d3_manager_config d3_cfg_cmd_data = {};
3236 int ret;
3237
3238 lockdep_assert_held(&mvm->mutex);
3239
3240 IWL_DEBUG_WOWLAN(mvm, "Starting fast suspend flow\n");
3241
3242 iwl_mvm_pause_tcm(mvm, true);
3243
3244 mvm->fast_resume = true;
3245 set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
3246
3247 WARN_ON(iwl_mvm_power_update_device(mvm));
3248 ret = iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD, 0,
3249 sizeof(d3_cfg_cmd_data), &d3_cfg_cmd_data);
3250 if (ret)
3251 IWL_ERR(mvm,
3252 "fast suspend: couldn't send D3_CONFIG_CMD %d\n", ret);
3253
3254 ret = iwl_trans_d3_suspend(mvm->trans, false);
3255 if (ret)
3256 IWL_ERR(mvm, "fast suspend: trans_d3_suspend failed %d\n", ret);
3257 }
3258
iwl_mvm_fast_resume(struct iwl_mvm * mvm)3259 int iwl_mvm_fast_resume(struct iwl_mvm *mvm)
3260 {
3261 struct iwl_d3_data d3_data = {
3262 .notif_expected =
3263 IWL_D3_NOTIF_D3_END_NOTIF,
3264 };
3265 enum rt_status rt_status;
3266 int ret;
3267
3268 lockdep_assert_held(&mvm->mutex);
3269
3270 IWL_DEBUG_WOWLAN(mvm, "Starting the fast resume flow\n");
3271
3272 mvm->last_reset_or_resume_time_jiffies = jiffies;
3273 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
3274
3275 rt_status = iwl_mvm_check_rt_status(mvm, NULL);
3276 if (rt_status != FW_ALIVE) {
3277 iwl_trans_notify_fw_error(mvm->trans);
3278 if (rt_status == FW_ERROR) {
3279 IWL_ERR(mvm,
3280 "iwl_mvm_check_rt_status failed, device is gone during suspend\n");
3281 iwl_mvm_dump_nic_error_log(mvm);
3282 iwl_dbg_tlv_time_point(&mvm->fwrt,
3283 IWL_FW_INI_TIME_POINT_FW_ASSERT,
3284 NULL);
3285 iwl_fw_dbg_collect_desc(&mvm->fwrt,
3286 &iwl_dump_desc_assert,
3287 false, 0);
3288 }
3289 ret = -ENODEV;
3290
3291 goto out;
3292 }
3293 ret = iwl_mvm_d3_notif_wait(mvm, &d3_data);
3294
3295 if (ret) {
3296 IWL_ERR(mvm, "Couldn't get the d3 notif %d\n", ret);
3297 mvm->trans->state = IWL_TRANS_NO_FW;
3298 }
3299
3300 iwl_mvm_resume_tcm(mvm);
3301
3302 out:
3303 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
3304 mvm->fast_resume = false;
3305
3306 return ret;
3307 }
3308