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