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 #if defined(__FreeBSD__)
11 #include <linux/string.h>
12 #include <linux/delay.h>
13 #endif
14 #include <net/cfg80211.h>
15 #include <net/ipv6.h>
16 #include <net/tcp.h>
17 #include <net/addrconf.h>
18 #include "iwl-modparams.h"
19 #include "fw-api.h"
20 #include "mvm.h"
21 #include "fw/img.h"
22
iwl_mvm_set_rekey_data(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct cfg80211_gtk_rekey_data * data)23 void iwl_mvm_set_rekey_data(struct ieee80211_hw *hw,
24 struct ieee80211_vif *vif,
25 struct cfg80211_gtk_rekey_data *data)
26 {
27 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
28 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
29
30 mutex_lock(&mvm->mutex);
31
32 mvmvif->rekey_data.kek_len = data->kek_len;
33 mvmvif->rekey_data.kck_len = data->kck_len;
34 memcpy(mvmvif->rekey_data.kek, data->kek, data->kek_len);
35 memcpy(mvmvif->rekey_data.kck, data->kck, data->kck_len);
36 mvmvif->rekey_data.akm = data->akm & 0xFF;
37 mvmvif->rekey_data.replay_ctr =
38 cpu_to_le64(be64_to_cpup((const __be64 *)data->replay_ctr));
39 mvmvif->rekey_data.valid = true;
40
41 mutex_unlock(&mvm->mutex);
42 }
43
44 #if IS_ENABLED(CONFIG_IPV6)
iwl_mvm_ipv6_addr_change(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct inet6_dev * idev)45 void iwl_mvm_ipv6_addr_change(struct ieee80211_hw *hw,
46 struct ieee80211_vif *vif,
47 struct inet6_dev *idev)
48 {
49 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
50 struct inet6_ifaddr *ifa;
51 int idx = 0;
52
53 memset(mvmvif->tentative_addrs, 0, sizeof(mvmvif->tentative_addrs));
54
55 read_lock_bh(&idev->lock);
56 list_for_each_entry(ifa, &idev->addr_list, if_list) {
57 mvmvif->target_ipv6_addrs[idx] = ifa->addr;
58 if (ifa->flags & IFA_F_TENTATIVE)
59 __set_bit(idx, mvmvif->tentative_addrs);
60 idx++;
61 if (idx >= IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_MAX)
62 break;
63 }
64 read_unlock_bh(&idev->lock);
65
66 mvmvif->num_target_ipv6_addrs = idx;
67 }
68 #endif
69
iwl_mvm_set_default_unicast_key(struct ieee80211_hw * hw,struct ieee80211_vif * vif,int idx)70 void iwl_mvm_set_default_unicast_key(struct ieee80211_hw *hw,
71 struct ieee80211_vif *vif, int idx)
72 {
73 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
74
75 mvmvif->tx_key_idx = idx;
76 }
77
iwl_mvm_convert_p1k(u16 * p1k,__le16 * out)78 static void iwl_mvm_convert_p1k(u16 *p1k, __le16 *out)
79 {
80 int i;
81
82 for (i = 0; i < IWL_P1K_SIZE; i++)
83 out[i] = cpu_to_le16(p1k[i]);
84 }
85
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)86 static const u8 *iwl_mvm_find_max_pn(struct ieee80211_key_conf *key,
87 struct iwl_mvm_key_pn *ptk_pn,
88 struct ieee80211_key_seq *seq,
89 int tid, int queues)
90 {
91 const u8 *ret = seq->ccmp.pn;
92 int i;
93
94 /* get the PN from mac80211, used on the default queue */
95 ieee80211_get_key_rx_seq(key, tid, seq);
96
97 /* and use the internal data for the other queues */
98 for (i = 1; i < queues; i++) {
99 const u8 *tmp = ptk_pn->q[i].pn[tid];
100
101 if (memcmp(ret, tmp, IEEE80211_CCMP_PN_LEN) <= 0)
102 ret = tmp;
103 }
104
105 return ret;
106 }
107
108 struct wowlan_key_reprogram_data {
109 bool error;
110 int wep_key_idx;
111 };
112
iwl_mvm_wowlan_program_keys(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key,void * _data)113 static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw,
114 struct ieee80211_vif *vif,
115 struct ieee80211_sta *sta,
116 struct ieee80211_key_conf *key,
117 void *_data)
118 {
119 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
120 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
121 struct wowlan_key_reprogram_data *data = _data;
122 int ret;
123
124 switch (key->cipher) {
125 case WLAN_CIPHER_SUITE_WEP40:
126 case WLAN_CIPHER_SUITE_WEP104: { /* hack it for now */
127 DEFINE_RAW_FLEX(struct iwl_mvm_wep_key_cmd, wkc, wep_key, 1);
128 struct iwl_mvm_wep_key *wep_key = wkc->wep_key;
129
130 wkc->mac_id_n_color =
131 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
132 mvmvif->color));
133 wkc->num_keys = 1;
134 /* firmware sets STA_KEY_FLG_WEP_13BYTES */
135 wkc->decryption_type = STA_KEY_FLG_WEP;
136 wep_key->key_index = key->keyidx;
137 wep_key->key_size = key->keylen;
138
139 /*
140 * This will fail -- the key functions don't set support
141 * pairwise WEP keys. However, that's better than silently
142 * failing WoWLAN. Or maybe not?
143 */
144 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
145 break;
146
147 memcpy(&wep_key->key[3], key->key, key->keylen);
148 if (key->keyidx == mvmvif->tx_key_idx) {
149 /* TX key must be at offset 0 */
150 wep_key->key_offset = 0;
151 } else {
152 /* others start at 1 */
153 data->wep_key_idx++;
154 wep_key->key_offset = data->wep_key_idx;
155 }
156
157 mutex_lock(&mvm->mutex);
158 ret = iwl_mvm_send_cmd_pdu(mvm, WEP_KEY, 0,
159 __struct_size(wkc), wkc);
160 data->error = ret != 0;
161
162 mvm->ptk_ivlen = key->iv_len;
163 mvm->ptk_icvlen = key->icv_len;
164 mvm->gtk_ivlen = key->iv_len;
165 mvm->gtk_icvlen = key->icv_len;
166 mutex_unlock(&mvm->mutex);
167
168 /* don't upload key again */
169 return;
170 }
171 default:
172 data->error = true;
173 return;
174 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
175 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
176 return;
177 case WLAN_CIPHER_SUITE_AES_CMAC:
178 /*
179 * Ignore CMAC keys -- the WoWLAN firmware doesn't support them
180 * but we also shouldn't abort suspend due to that. It does have
181 * support for the IGTK key renewal, but doesn't really use the
182 * IGTK for anything. This means we could spuriously wake up or
183 * be deauthenticated, but that was considered acceptable.
184 */
185 return;
186 case WLAN_CIPHER_SUITE_TKIP:
187 case WLAN_CIPHER_SUITE_CCMP:
188 case WLAN_CIPHER_SUITE_GCMP:
189 case WLAN_CIPHER_SUITE_GCMP_256:
190 break;
191 }
192
193 mutex_lock(&mvm->mutex);
194 /*
195 * The D3 firmware hardcodes the key offset 0 as the key it
196 * uses to transmit packets to the AP, i.e. the PTK.
197 */
198 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
199 mvm->ptk_ivlen = key->iv_len;
200 mvm->ptk_icvlen = key->icv_len;
201 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 0);
202 } else {
203 /*
204 * firmware only supports TSC/RSC for a single key,
205 * so if there are multiple keep overwriting them
206 * with new ones -- this relies on mac80211 doing
207 * list_add_tail().
208 */
209 mvm->gtk_ivlen = key->iv_len;
210 mvm->gtk_icvlen = key->icv_len;
211 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 1);
212 }
213 mutex_unlock(&mvm->mutex);
214 data->error = ret != 0;
215 }
216
217 struct wowlan_key_rsc_tsc_data {
218 struct iwl_wowlan_rsc_tsc_params_cmd_ver_2 *rsc_tsc;
219 bool have_rsc_tsc;
220 };
221
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)222 static void iwl_mvm_wowlan_get_rsc_tsc_data(struct ieee80211_hw *hw,
223 struct ieee80211_vif *vif,
224 struct ieee80211_sta *sta,
225 struct ieee80211_key_conf *key,
226 void *_data)
227 {
228 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
229 struct wowlan_key_rsc_tsc_data *data = _data;
230 struct aes_sc *aes_sc;
231 struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
232 struct ieee80211_key_seq seq;
233 int i;
234
235 switch (key->cipher) {
236 default:
237 break;
238 case WLAN_CIPHER_SUITE_TKIP:
239 if (sta) {
240 u64 pn64;
241
242 tkip_sc =
243 data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
244 tkip_tx_sc =
245 &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
246
247 pn64 = atomic64_read(&key->tx_pn);
248 tkip_tx_sc->iv16 = cpu_to_le16(TKIP_PN_TO_IV16(pn64));
249 tkip_tx_sc->iv32 = cpu_to_le32(TKIP_PN_TO_IV32(pn64));
250 } else {
251 tkip_sc =
252 data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc;
253 }
254
255 /*
256 * For non-QoS this relies on the fact that both the uCode and
257 * mac80211 use TID 0 (as they need to avoid replay attacks)
258 * for checking the IV in the frames.
259 */
260 for (i = 0; i < IWL_NUM_RSC; i++) {
261 ieee80211_get_key_rx_seq(key, i, &seq);
262 tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
263 tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
264 }
265
266 data->have_rsc_tsc = true;
267 break;
268 case WLAN_CIPHER_SUITE_CCMP:
269 case WLAN_CIPHER_SUITE_GCMP:
270 case WLAN_CIPHER_SUITE_GCMP_256:
271 if (sta) {
272 struct aes_sc *aes_tx_sc;
273 u64 pn64;
274
275 aes_sc =
276 data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
277 aes_tx_sc =
278 &data->rsc_tsc->all_tsc_rsc.aes.tsc;
279
280 pn64 = atomic64_read(&key->tx_pn);
281 aes_tx_sc->pn = cpu_to_le64(pn64);
282 } else {
283 aes_sc =
284 data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
285 }
286
287 /*
288 * For non-QoS this relies on the fact that both the uCode and
289 * mac80211/our RX code use TID 0 for checking the PN.
290 */
291 if (sta && iwl_mvm_has_new_rx_api(mvm)) {
292 struct iwl_mvm_sta *mvmsta;
293 struct iwl_mvm_key_pn *ptk_pn;
294 const u8 *pn;
295
296 mvmsta = iwl_mvm_sta_from_mac80211(sta);
297 rcu_read_lock();
298 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]);
299 if (WARN_ON(!ptk_pn)) {
300 rcu_read_unlock();
301 break;
302 }
303
304 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
305 pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i,
306 mvm->trans->info.num_rxqs);
307 aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
308 ((u64)pn[4] << 8) |
309 ((u64)pn[3] << 16) |
310 ((u64)pn[2] << 24) |
311 ((u64)pn[1] << 32) |
312 ((u64)pn[0] << 40));
313 }
314
315 rcu_read_unlock();
316 } else {
317 for (i = 0; i < IWL_NUM_RSC; i++) {
318 u8 *pn = seq.ccmp.pn;
319
320 ieee80211_get_key_rx_seq(key, i, &seq);
321 aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
322 ((u64)pn[4] << 8) |
323 ((u64)pn[3] << 16) |
324 ((u64)pn[2] << 24) |
325 ((u64)pn[1] << 32) |
326 ((u64)pn[0] << 40));
327 }
328 }
329 data->have_rsc_tsc = true;
330 break;
331 }
332 }
333
334 struct wowlan_key_rsc_v5_data {
335 struct iwl_wowlan_rsc_tsc_params_cmd *rsc;
336 bool have_rsc;
337 int gtks;
338 int gtk_ids[4];
339 };
340
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)341 static void iwl_mvm_wowlan_get_rsc_v5_data(struct ieee80211_hw *hw,
342 struct ieee80211_vif *vif,
343 struct ieee80211_sta *sta,
344 struct ieee80211_key_conf *key,
345 void *_data)
346 {
347 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
348 struct wowlan_key_rsc_v5_data *data = _data;
349 struct ieee80211_key_seq seq;
350 __le64 *rsc;
351 int i;
352
353 /* only for ciphers that can be PTK/GTK */
354 switch (key->cipher) {
355 default:
356 return;
357 case WLAN_CIPHER_SUITE_TKIP:
358 case WLAN_CIPHER_SUITE_CCMP:
359 case WLAN_CIPHER_SUITE_GCMP:
360 case WLAN_CIPHER_SUITE_GCMP_256:
361 break;
362 }
363
364 if (sta) {
365 rsc = data->rsc->ucast_rsc;
366 } else {
367 if (WARN_ON(data->gtks >= ARRAY_SIZE(data->gtk_ids)))
368 return;
369 data->gtk_ids[data->gtks] = key->keyidx;
370 rsc = data->rsc->mcast_rsc[data->gtks % 2];
371 if (WARN_ON(key->keyidx >=
372 ARRAY_SIZE(data->rsc->mcast_key_id_map)))
373 return;
374 data->rsc->mcast_key_id_map[key->keyidx] = data->gtks % 2;
375 if (data->gtks >= 2) {
376 int prev = data->gtks - 2;
377 int prev_idx = data->gtk_ids[prev];
378
379 data->rsc->mcast_key_id_map[prev_idx] =
380 IWL_MCAST_KEY_MAP_INVALID;
381 }
382 data->gtks++;
383 }
384
385 switch (key->cipher) {
386 default:
387 WARN_ON(1);
388 break;
389 case WLAN_CIPHER_SUITE_TKIP:
390
391 /*
392 * For non-QoS this relies on the fact that both the uCode and
393 * mac80211 use TID 0 (as they need to avoid replay attacks)
394 * for checking the IV in the frames.
395 */
396 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
397 ieee80211_get_key_rx_seq(key, i, &seq);
398
399 rsc[i] = cpu_to_le64(((u64)seq.tkip.iv32 << 16) |
400 seq.tkip.iv16);
401 }
402
403 data->have_rsc = true;
404 break;
405 case WLAN_CIPHER_SUITE_CCMP:
406 case WLAN_CIPHER_SUITE_GCMP:
407 case WLAN_CIPHER_SUITE_GCMP_256:
408 /*
409 * For non-QoS this relies on the fact that both the uCode and
410 * mac80211/our RX code use TID 0 for checking the PN.
411 */
412 if (sta) {
413 struct iwl_mvm_sta *mvmsta;
414 struct iwl_mvm_key_pn *ptk_pn;
415 const u8 *pn;
416
417 mvmsta = iwl_mvm_sta_from_mac80211(sta);
418 rcu_read_lock();
419 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]);
420 if (WARN_ON(!ptk_pn)) {
421 rcu_read_unlock();
422 break;
423 }
424
425 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
426 pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i,
427 mvm->trans->info.num_rxqs);
428 rsc[i] = cpu_to_le64((u64)pn[5] |
429 ((u64)pn[4] << 8) |
430 ((u64)pn[3] << 16) |
431 ((u64)pn[2] << 24) |
432 ((u64)pn[1] << 32) |
433 ((u64)pn[0] << 40));
434 }
435
436 rcu_read_unlock();
437 } else {
438 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
439 u8 *pn = seq.ccmp.pn;
440
441 ieee80211_get_key_rx_seq(key, i, &seq);
442 rsc[i] = cpu_to_le64((u64)pn[5] |
443 ((u64)pn[4] << 8) |
444 ((u64)pn[3] << 16) |
445 ((u64)pn[2] << 24) |
446 ((u64)pn[1] << 32) |
447 ((u64)pn[0] << 40));
448 }
449 }
450 data->have_rsc = true;
451 break;
452 }
453 }
454
iwl_mvm_wowlan_config_rsc_tsc(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_mvm_vif_link_info * mvm_link)455 static int iwl_mvm_wowlan_config_rsc_tsc(struct iwl_mvm *mvm,
456 struct ieee80211_vif *vif,
457 struct iwl_mvm_vif_link_info *mvm_link)
458 {
459 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TSC_RSC_PARAM,
460 IWL_FW_CMD_VER_UNKNOWN);
461 int ret;
462
463 if (ver == 5) {
464 struct wowlan_key_rsc_v5_data data = {};
465 int i;
466
467 data.rsc = kzalloc_obj(*data.rsc);
468 if (!data.rsc)
469 return -ENOMEM;
470
471 for (i = 0; i < ARRAY_SIZE(data.rsc->mcast_key_id_map); i++)
472 data.rsc->mcast_key_id_map[i] =
473 IWL_MCAST_KEY_MAP_INVALID;
474 data.rsc->sta_id = cpu_to_le32(mvm_link->ap_sta_id);
475
476 ieee80211_iter_keys(mvm->hw, vif,
477 iwl_mvm_wowlan_get_rsc_v5_data,
478 &data);
479
480 if (data.have_rsc)
481 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM,
482 CMD_ASYNC, sizeof(*data.rsc),
483 data.rsc);
484 else
485 ret = 0;
486 kfree(data.rsc);
487 } else if (ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN) {
488 struct wowlan_key_rsc_tsc_data data = {};
489
490 data.rsc_tsc = kzalloc_obj(*data.rsc_tsc);
491 if (!data.rsc_tsc)
492 return -ENOMEM;
493
494 ieee80211_iter_keys(mvm->hw, vif,
495 iwl_mvm_wowlan_get_rsc_tsc_data,
496 &data);
497
498 if (data.have_rsc_tsc)
499 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM,
500 CMD_ASYNC,
501 sizeof(*data.rsc_tsc),
502 data.rsc_tsc);
503 else
504 ret = 0;
505 kfree(data.rsc_tsc);
506 } else {
507 ret = 0;
508 WARN_ON_ONCE(1);
509 }
510
511 return ret;
512 }
513
514 struct wowlan_key_tkip_data {
515 struct iwl_wowlan_tkip_params_cmd tkip;
516 bool have_tkip_keys;
517 };
518
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)519 static void iwl_mvm_wowlan_get_tkip_data(struct ieee80211_hw *hw,
520 struct ieee80211_vif *vif,
521 struct ieee80211_sta *sta,
522 struct ieee80211_key_conf *key,
523 void *_data)
524 {
525 struct wowlan_key_tkip_data *data = _data;
526 struct iwl_p1k_cache *rx_p1ks;
527 u8 *rx_mic_key;
528 struct ieee80211_key_seq seq;
529 u32 cur_rx_iv32 = 0;
530 u16 p1k[IWL_P1K_SIZE];
531 int i;
532
533 switch (key->cipher) {
534 default:
535 break;
536 case WLAN_CIPHER_SUITE_TKIP:
537 if (sta) {
538 u64 pn64;
539
540 rx_p1ks = data->tkip.rx_uni;
541
542 pn64 = atomic64_read(&key->tx_pn);
543
544 ieee80211_get_tkip_p1k_iv(key, TKIP_PN_TO_IV32(pn64),
545 p1k);
546 iwl_mvm_convert_p1k(p1k, data->tkip.tx.p1k);
547
548 memcpy(data->tkip.mic_keys.tx,
549 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
550 IWL_MIC_KEY_SIZE);
551
552 rx_mic_key = data->tkip.mic_keys.rx_unicast;
553 } else {
554 rx_p1ks = data->tkip.rx_multi;
555 rx_mic_key = data->tkip.mic_keys.rx_mcast;
556 }
557
558 for (i = 0; i < IWL_NUM_RSC; i++) {
559 ieee80211_get_key_rx_seq(key, i, &seq);
560 /* wrapping isn't allowed, AP must rekey */
561 if (seq.tkip.iv32 > cur_rx_iv32)
562 cur_rx_iv32 = seq.tkip.iv32;
563 }
564
565 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
566 cur_rx_iv32, p1k);
567 iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k);
568 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
569 cur_rx_iv32 + 1, p1k);
570 iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k);
571
572 memcpy(rx_mic_key,
573 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
574 IWL_MIC_KEY_SIZE);
575
576 data->have_tkip_keys = true;
577 break;
578 }
579 }
580
581 struct wowlan_key_gtk_type_iter {
582 struct iwl_wowlan_kek_kck_material_cmd_v4 *kek_kck_cmd;
583 };
584
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)585 static void iwl_mvm_wowlan_gtk_type_iter(struct ieee80211_hw *hw,
586 struct ieee80211_vif *vif,
587 struct ieee80211_sta *sta,
588 struct ieee80211_key_conf *key,
589 void *_data)
590 {
591 struct wowlan_key_gtk_type_iter *data = _data;
592 __le32 *cipher = NULL;
593
594 if (key->keyidx == 4 || key->keyidx == 5)
595 cipher = &data->kek_kck_cmd->igtk_cipher;
596 if (key->keyidx == 6 || key->keyidx == 7)
597 cipher = &data->kek_kck_cmd->bigtk_cipher;
598
599 switch (key->cipher) {
600 default:
601 return;
602 case WLAN_CIPHER_SUITE_TKIP:
603 if (!sta)
604 data->kek_kck_cmd->gtk_cipher =
605 cpu_to_le32(STA_KEY_FLG_TKIP);
606 return;
607 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
608 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
609 if (cipher)
610 *cipher = cpu_to_le32(STA_KEY_FLG_GCMP);
611 return;
612 case WLAN_CIPHER_SUITE_AES_CMAC:
613 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
614 if (cipher)
615 *cipher = cpu_to_le32(STA_KEY_FLG_CCM);
616 return;
617 case WLAN_CIPHER_SUITE_CCMP:
618 if (!sta)
619 data->kek_kck_cmd->gtk_cipher =
620 cpu_to_le32(STA_KEY_FLG_CCM);
621 return;
622 case WLAN_CIPHER_SUITE_GCMP:
623 case WLAN_CIPHER_SUITE_GCMP_256:
624 if (!sta)
625 data->kek_kck_cmd->gtk_cipher =
626 cpu_to_le32(STA_KEY_FLG_GCMP);
627 return;
628 }
629 }
630
iwl_mvm_send_patterns_v1(struct iwl_mvm * mvm,struct cfg80211_wowlan * wowlan)631 static int iwl_mvm_send_patterns_v1(struct iwl_mvm *mvm,
632 struct cfg80211_wowlan *wowlan)
633 {
634 struct iwl_wowlan_patterns_cmd_v1 *pattern_cmd;
635 struct iwl_host_cmd cmd = {
636 .id = WOWLAN_PATTERNS,
637 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
638 };
639 int i, err;
640
641 if (!wowlan->n_patterns)
642 return 0;
643
644 cmd.len[0] = struct_size(pattern_cmd, patterns, wowlan->n_patterns);
645
646 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
647 if (!pattern_cmd)
648 return -ENOMEM;
649
650 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
651
652 for (i = 0; i < wowlan->n_patterns; i++) {
653 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
654
655 memcpy(&pattern_cmd->patterns[i].mask,
656 wowlan->patterns[i].mask, mask_len);
657 memcpy(&pattern_cmd->patterns[i].pattern,
658 wowlan->patterns[i].pattern,
659 wowlan->patterns[i].pattern_len);
660 pattern_cmd->patterns[i].mask_size = mask_len;
661 pattern_cmd->patterns[i].pattern_size =
662 wowlan->patterns[i].pattern_len;
663 }
664
665 cmd.data[0] = pattern_cmd;
666 err = iwl_mvm_send_cmd(mvm, &cmd);
667 kfree(pattern_cmd);
668 return err;
669 }
670
iwl_mvm_send_patterns(struct iwl_mvm * mvm,struct iwl_mvm_vif_link_info * mvm_link,struct cfg80211_wowlan * wowlan)671 static int iwl_mvm_send_patterns(struct iwl_mvm *mvm,
672 struct iwl_mvm_vif_link_info *mvm_link,
673 struct cfg80211_wowlan *wowlan)
674 {
675 struct iwl_wowlan_patterns_cmd *pattern_cmd;
676 struct iwl_host_cmd cmd = {
677 .id = WOWLAN_PATTERNS,
678 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
679 };
680 int i, err;
681 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id,
682 IWL_FW_CMD_VER_UNKNOWN);
683
684 if (!wowlan->n_patterns)
685 return 0;
686
687 cmd.len[0] = sizeof(*pattern_cmd) +
688 wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern_v2);
689
690 pattern_cmd = kzalloc(cmd.len[0], GFP_KERNEL);
691 if (!pattern_cmd)
692 return -ENOMEM;
693
694 pattern_cmd->n_patterns = wowlan->n_patterns;
695 if (ver >= 3)
696 pattern_cmd->sta_id = mvm_link->ap_sta_id;
697
698 for (i = 0; i < wowlan->n_patterns; i++) {
699 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
700
701 pattern_cmd->patterns[i].pattern_type =
702 WOWLAN_PATTERN_TYPE_BITMASK;
703
704 memcpy(&pattern_cmd->patterns[i].u.bitmask.mask,
705 wowlan->patterns[i].mask, mask_len);
706 memcpy(&pattern_cmd->patterns[i].u.bitmask.pattern,
707 wowlan->patterns[i].pattern,
708 wowlan->patterns[i].pattern_len);
709 pattern_cmd->patterns[i].u.bitmask.mask_size = mask_len;
710 pattern_cmd->patterns[i].u.bitmask.pattern_size =
711 wowlan->patterns[i].pattern_len;
712 }
713
714 cmd.data[0] = pattern_cmd;
715 err = iwl_mvm_send_cmd(mvm, &cmd);
716 kfree(pattern_cmd);
717 return err;
718 }
719
iwl_mvm_d3_reprogram(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * ap_sta)720 static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
721 struct ieee80211_sta *ap_sta)
722 {
723 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
724 struct ieee80211_chanctx_conf *ctx;
725 u8 chains_static, chains_dynamic;
726 struct cfg80211_chan_def chandef, ap_def;
727 int ret, i;
728 struct iwl_binding_cmd_v1 binding_cmd = {};
729 struct iwl_time_quota_cmd quota_cmd = {};
730 struct iwl_time_quota_data *quota;
731 u32 status;
732
733 if (WARN_ON_ONCE(iwl_mvm_is_cdb_supported(mvm)))
734 return -EINVAL;
735
736 /* add back the PHY */
737 if (WARN_ON(!mvmvif->deflink.phy_ctxt))
738 return -EINVAL;
739
740 rcu_read_lock();
741 ctx = rcu_dereference(vif->bss_conf.chanctx_conf);
742 if (WARN_ON(!ctx)) {
743 rcu_read_unlock();
744 return -EINVAL;
745 }
746 chandef = ctx->def;
747 ap_def = ctx->ap;
748 chains_static = ctx->rx_chains_static;
749 chains_dynamic = ctx->rx_chains_dynamic;
750 rcu_read_unlock();
751
752 ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->deflink.phy_ctxt, &chandef,
753 &ap_def, chains_static, chains_dynamic);
754 if (ret)
755 return ret;
756
757 /* add back the MAC */
758 mvmvif->uploaded = false;
759
760 if (WARN_ON(!vif->cfg.assoc))
761 return -EINVAL;
762
763 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
764 if (ret)
765 return ret;
766
767 /* add back binding - XXX refactor? */
768 binding_cmd.id_and_color =
769 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id,
770 mvmvif->deflink.phy_ctxt->color));
771 binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD);
772 binding_cmd.phy =
773 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id,
774 mvmvif->deflink.phy_ctxt->color));
775 binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
776 mvmvif->color));
777 for (i = 1; i < MAX_MACS_IN_BINDING; i++)
778 binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID);
779
780 status = 0;
781 ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD,
782 IWL_BINDING_CMD_SIZE_V1, &binding_cmd,
783 &status);
784 if (ret) {
785 IWL_ERR(mvm, "Failed to add binding: %d\n", ret);
786 return ret;
787 }
788
789 if (status) {
790 IWL_ERR(mvm, "Binding command failed: %u\n", status);
791 return -EIO;
792 }
793
794 ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false, 0);
795 if (ret)
796 return ret;
797 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->deflink.ap_sta_id],
798 ap_sta);
799
800 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
801 if (ret)
802 return ret;
803
804 /* and some quota */
805 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, 0);
806 quota->id_and_color =
807 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id,
808 mvmvif->deflink.phy_ctxt->color));
809 quota->quota = cpu_to_le32(IWL_MVM_MAX_QUOTA);
810 quota->max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA);
811
812 for (i = 1; i < MAX_BINDINGS; i++) {
813 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, i);
814 quota->id_and_color = cpu_to_le32(FW_CTXT_INVALID);
815 }
816
817 ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0,
818 iwl_mvm_quota_cmd_size(mvm), "a_cmd);
819 if (ret)
820 IWL_ERR(mvm, "Failed to send quota: %d\n", ret);
821
822 if (iwl_mvm_is_lar_supported(mvm) && iwl_mvm_init_fw_regd(mvm, false))
823 IWL_ERR(mvm, "Failed to initialize D3 LAR information\n");
824
825 return 0;
826 }
827
iwl_mvm_get_last_nonqos_seq(struct iwl_mvm * mvm,struct ieee80211_vif * vif)828 static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm,
829 struct ieee80211_vif *vif)
830 {
831 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
832 struct iwl_nonqos_seq_query_cmd query_cmd = {
833 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET),
834 .mac_id_n_color =
835 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
836 mvmvif->color)),
837 };
838 struct iwl_host_cmd cmd = {
839 .id = NON_QOS_TX_COUNTER_CMD,
840 .flags = CMD_WANT_SKB,
841 };
842 int err;
843 u32 size;
844
845 cmd.data[0] = &query_cmd;
846 cmd.len[0] = sizeof(query_cmd);
847
848 err = iwl_mvm_send_cmd(mvm, &cmd);
849 if (err)
850 return err;
851
852 size = iwl_rx_packet_payload_len(cmd.resp_pkt);
853 if (size < sizeof(__le16)) {
854 err = -EINVAL;
855 } else {
856 err = le16_to_cpup((__le16 *)cmd.resp_pkt->data);
857 /* firmware returns next, not last-used seqno */
858 err = (u16) (err - 0x10);
859 }
860
861 iwl_free_resp(&cmd);
862 return err;
863 }
864
iwl_mvm_set_last_nonqos_seq(struct iwl_mvm * mvm,struct ieee80211_vif * vif)865 void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
866 {
867 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
868 struct iwl_nonqos_seq_query_cmd query_cmd = {
869 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET),
870 .mac_id_n_color =
871 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
872 mvmvif->color)),
873 .value = cpu_to_le16(mvmvif->seqno),
874 };
875
876 /* return if called during restart, not resume from D3 */
877 if (!mvmvif->seqno_valid)
878 return;
879
880 mvmvif->seqno_valid = false;
881
882 if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0,
883 sizeof(query_cmd), &query_cmd))
884 IWL_ERR(mvm, "failed to set non-QoS seqno\n");
885 }
886
iwl_mvm_switch_to_d3(struct iwl_mvm * mvm)887 static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm)
888 {
889 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
890
891 iwl_mvm_stop_device(mvm);
892 /*
893 * Set the HW restart bit -- this is mostly true as we're
894 * going to load new firmware and reprogram that, though
895 * the reprogramming is going to be manual to avoid adding
896 * all the MACs that aren't support.
897 * We don't have to clear up everything though because the
898 * reprogramming is manual. When we resume, we'll actually
899 * go through a proper restart sequence again to switch
900 * back to the runtime firmware image.
901 */
902 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
903
904 /* the fw is reset, so all the keys are cleared */
905 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
906
907 mvm->ptk_ivlen = 0;
908 mvm->ptk_icvlen = 0;
909 mvm->ptk_ivlen = 0;
910 mvm->ptk_icvlen = 0;
911
912 return iwl_mvm_load_d3_fw(mvm);
913 }
914
915 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)916 iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm,
917 struct cfg80211_wowlan *wowlan,
918 struct iwl_wowlan_config_cmd_v6 *wowlan_config_cmd,
919 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
920 struct ieee80211_sta *ap_sta)
921 {
922 struct iwl_mvm_sta *mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
923
924 /* TODO: wowlan_config_cmd->wowlan_ba_teardown_tids */
925
926 wowlan_config_cmd->is_11n_connection =
927 ap_sta->deflink.ht_cap.ht_supported;
928 wowlan_config_cmd->flags = ENABLE_L3_FILTERING |
929 ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING;
930
931 if (ap_sta->mfp)
932 wowlan_config_cmd->flags |= IS_11W_ASSOC;
933
934 if (rcu_access_pointer(mvmvif->bcn_prot.keys[0]) ||
935 rcu_access_pointer(mvmvif->bcn_prot.keys[1]))
936 wowlan_config_cmd->flags |= HAS_BEACON_PROTECTION;
937
938 if (iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_CONFIGURATION, 0) < 6) {
939 /* Query the last used seqno and set it */
940 int ret = iwl_mvm_get_last_nonqos_seq(mvm, vif);
941
942 if (ret < 0)
943 return ret;
944
945 wowlan_config_cmd->non_qos_seq = cpu_to_le16(ret);
946 }
947
948 if (iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_CONFIGURATION, 0) < 7)
949 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, wowlan_config_cmd);
950
951 if (wowlan->disconnect)
952 wowlan_config_cmd->wakeup_filter |=
953 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
954 IWL_WOWLAN_WAKEUP_LINK_CHANGE);
955 if (wowlan->magic_pkt)
956 wowlan_config_cmd->wakeup_filter |=
957 cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET);
958 if (wowlan->gtk_rekey_failure)
959 wowlan_config_cmd->wakeup_filter |=
960 cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
961 if (wowlan->eap_identity_req)
962 wowlan_config_cmd->wakeup_filter |=
963 cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ);
964 if (wowlan->four_way_handshake)
965 wowlan_config_cmd->wakeup_filter |=
966 cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
967 if (wowlan->n_patterns)
968 wowlan_config_cmd->wakeup_filter |=
969 cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH);
970
971 if (wowlan->rfkill_release)
972 wowlan_config_cmd->wakeup_filter |=
973 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
974
975 if (wowlan->tcp) {
976 /*
977 * Set the "link change" (really "link lost") flag as well
978 * since that implies losing the TCP connection.
979 */
980 wowlan_config_cmd->wakeup_filter |=
981 cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS |
982 IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE |
983 IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET |
984 IWL_WOWLAN_WAKEUP_LINK_CHANGE);
985 }
986
987 if (wowlan->any) {
988 wowlan_config_cmd->wakeup_filter |=
989 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
990 IWL_WOWLAN_WAKEUP_LINK_CHANGE |
991 IWL_WOWLAN_WAKEUP_RX_FRAME |
992 IWL_WOWLAN_WAKEUP_BCN_FILTERING);
993 }
994
995 return 0;
996 }
997
iwl_mvm_wowlan_config_key_params(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_mvm_vif_link_info * mvm_link)998 static int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm,
999 struct ieee80211_vif *vif,
1000 struct iwl_mvm_vif_link_info *mvm_link)
1001 {
1002 bool unified = fw_has_capa(&mvm->fw->ucode_capa,
1003 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1004 struct wowlan_key_reprogram_data key_data = {};
1005 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1006 int ret;
1007 u8 cmd_ver;
1008 size_t cmd_size;
1009
1010 if (!unified) {
1011 /*
1012 * if we have to configure keys, call ieee80211_iter_keys(),
1013 * as we need non-atomic context in order to take the
1014 * required locks.
1015 */
1016 /*
1017 * Note that currently we don't use CMD_ASYNC in the iterator.
1018 * In case of key_data.configure_keys, all the configured
1019 * commands are SYNC, and iwl_mvm_wowlan_program_keys() will
1020 * take care of locking/unlocking mvm->mutex.
1021 */
1022 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_program_keys,
1023 &key_data);
1024
1025 if (key_data.error)
1026 return -EIO;
1027 }
1028
1029 ret = iwl_mvm_wowlan_config_rsc_tsc(mvm, vif, mvm_link);
1030 if (ret)
1031 return ret;
1032
1033 if (!fw_has_api(&mvm->fw->ucode_capa,
1034 IWL_UCODE_TLV_API_TKIP_MIC_KEYS)) {
1035 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TKIP_PARAM,
1036 IWL_FW_CMD_VER_UNKNOWN);
1037 struct wowlan_key_tkip_data tkip_data = {};
1038 int size;
1039
1040 if (ver == 2) {
1041 size = sizeof(tkip_data.tkip);
1042 tkip_data.tkip.sta_id =
1043 cpu_to_le32(mvm_link->ap_sta_id);
1044 } else if (ver == 1 || ver == IWL_FW_CMD_VER_UNKNOWN) {
1045 size = sizeof(struct iwl_wowlan_tkip_params_cmd_ver_1);
1046 } else {
1047 WARN_ON_ONCE(1);
1048 return -EINVAL;
1049 }
1050
1051 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_get_tkip_data,
1052 &tkip_data);
1053
1054 if (tkip_data.have_tkip_keys) {
1055 /* send relevant data according to CMD version */
1056 ret = iwl_mvm_send_cmd_pdu(mvm,
1057 WOWLAN_TKIP_PARAM,
1058 CMD_ASYNC, size,
1059 &tkip_data.tkip);
1060 if (ret)
1061 return ret;
1062 }
1063 }
1064
1065 /* configure rekey data only if offloaded rekey is supported (d3) */
1066 if (mvmvif->rekey_data.valid) {
1067 struct iwl_wowlan_kek_kck_material_cmd_v4 kek_kck_cmd = {};
1068 struct iwl_wowlan_kek_kck_material_cmd_v4 *_kek_kck_cmd =
1069 &kek_kck_cmd;
1070 struct wowlan_key_gtk_type_iter gtk_type_data = {
1071 .kek_kck_cmd = _kek_kck_cmd,
1072 };
1073
1074 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,
1075 WOWLAN_KEK_KCK_MATERIAL,
1076 IWL_FW_CMD_VER_UNKNOWN);
1077 if (WARN_ON(cmd_ver != 2 && cmd_ver != 3 && cmd_ver != 4 &&
1078 cmd_ver != IWL_FW_CMD_VER_UNKNOWN))
1079 return -EINVAL;
1080
1081 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_gtk_type_iter,
1082 >k_type_data);
1083
1084 memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck,
1085 mvmvif->rekey_data.kck_len);
1086 kek_kck_cmd.kck_len = cpu_to_le16(mvmvif->rekey_data.kck_len);
1087 memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek,
1088 mvmvif->rekey_data.kek_len);
1089 kek_kck_cmd.kek_len = cpu_to_le16(mvmvif->rekey_data.kek_len);
1090 kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr;
1091 kek_kck_cmd.akm = cpu_to_le32(mvmvif->rekey_data.akm);
1092 kek_kck_cmd.sta_id = cpu_to_le32(mvm_link->ap_sta_id);
1093
1094 if (cmd_ver == 4) {
1095 cmd_size = sizeof(struct iwl_wowlan_kek_kck_material_cmd_v4);
1096 } else {
1097 if (cmd_ver == 3)
1098 cmd_size =
1099 sizeof(struct iwl_wowlan_kek_kck_material_cmd_v3);
1100 else
1101 cmd_size =
1102 sizeof(struct iwl_wowlan_kek_kck_material_cmd_v2);
1103 /* skip the sta_id at the beginning */
1104 _kek_kck_cmd = (void *)
1105 ((u8 *)_kek_kck_cmd + sizeof(kek_kck_cmd.sta_id));
1106 }
1107
1108 IWL_DEBUG_WOWLAN(mvm, "setting akm %d\n",
1109 mvmvif->rekey_data.akm);
1110
1111 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_KEK_KCK_MATERIAL,
1112 CMD_ASYNC, cmd_size, _kek_kck_cmd);
1113 if (ret)
1114 return ret;
1115 }
1116
1117 return 0;
1118 }
1119
1120 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)1121 iwl_mvm_wowlan_config(struct iwl_mvm *mvm,
1122 struct cfg80211_wowlan *wowlan,
1123 struct iwl_wowlan_config_cmd_v6 *wowlan_config_cmd_v6,
1124 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
1125 struct iwl_mvm_vif_link_info *mvm_link,
1126 struct ieee80211_sta *ap_sta)
1127 {
1128 int ret;
1129 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1130 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1131
1132 mvm->offload_tid = wowlan_config_cmd_v6->offloading_tid;
1133
1134 if (!unified_image) {
1135 ret = iwl_mvm_switch_to_d3(mvm);
1136 if (ret)
1137 return ret;
1138
1139 ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta);
1140 if (ret)
1141 return ret;
1142 }
1143
1144 ret = iwl_mvm_wowlan_config_key_params(mvm, vif, mvm_link);
1145 if (ret)
1146 return ret;
1147
1148 if (iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_CONFIGURATION, 0) > 6) {
1149 struct iwl_wowlan_config_cmd wowlan_config_cmd = {
1150 .wakeup_filter = wowlan_config_cmd_v6->wakeup_filter,
1151 .wowlan_ba_teardown_tids =
1152 wowlan_config_cmd_v6->wowlan_ba_teardown_tids,
1153 .is_11n_connection =
1154 wowlan_config_cmd_v6->is_11n_connection,
1155 .offloading_tid = wowlan_config_cmd_v6->offloading_tid,
1156 .flags = wowlan_config_cmd_v6->flags,
1157 .sta_id = wowlan_config_cmd_v6->sta_id,
1158 };
1159
1160 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0,
1161 sizeof(wowlan_config_cmd),
1162 &wowlan_config_cmd);
1163 } else {
1164 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0,
1165 sizeof(*wowlan_config_cmd_v6),
1166 wowlan_config_cmd_v6);
1167 }
1168 if (ret)
1169 return ret;
1170
1171 if (fw_has_api(&mvm->fw->ucode_capa,
1172 IWL_UCODE_TLV_API_WOWLAN_TCP_SYN_WAKE))
1173 ret = iwl_mvm_send_patterns(mvm, mvm_link, wowlan);
1174 else
1175 ret = iwl_mvm_send_patterns_v1(mvm, wowlan);
1176 if (ret)
1177 return ret;
1178
1179 return iwl_mvm_send_proto_offload(mvm, vif, false, true, 0,
1180 mvm_link->ap_sta_id);
1181 }
1182
1183 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)1184 iwl_mvm_netdetect_config(struct iwl_mvm *mvm,
1185 struct cfg80211_wowlan *wowlan,
1186 struct cfg80211_sched_scan_request *nd_config,
1187 struct ieee80211_vif *vif)
1188 {
1189 int ret;
1190 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1191 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1192
1193 if (!unified_image) {
1194 ret = iwl_mvm_switch_to_d3(mvm);
1195 if (ret)
1196 return ret;
1197 } else {
1198 /* In theory, we wouldn't have to stop a running sched
1199 * scan in order to start another one (for
1200 * net-detect). But in practice this doesn't seem to
1201 * work properly, so stop any running sched_scan now.
1202 */
1203 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
1204 if (ret)
1205 return ret;
1206 }
1207
1208 ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies,
1209 IWL_MVM_SCAN_NETDETECT);
1210 if (ret)
1211 return ret;
1212
1213 if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels))
1214 return -EBUSY;
1215
1216 /* save the sched scan matchsets... */
1217 if (nd_config->n_match_sets) {
1218 mvm->nd_match_sets = kmemdup(nd_config->match_sets,
1219 sizeof(*nd_config->match_sets) *
1220 nd_config->n_match_sets,
1221 GFP_KERNEL);
1222 if (mvm->nd_match_sets)
1223 mvm->n_nd_match_sets = nd_config->n_match_sets;
1224 }
1225
1226 /* ...and the sched scan channels for later reporting */
1227 mvm->nd_channels = kmemdup(nd_config->channels,
1228 sizeof(*nd_config->channels) *
1229 nd_config->n_channels,
1230 GFP_KERNEL);
1231 if (mvm->nd_channels)
1232 mvm->n_nd_channels = nd_config->n_channels;
1233
1234 return 0;
1235 }
1236
iwl_mvm_free_nd(struct iwl_mvm * mvm)1237 static void iwl_mvm_free_nd(struct iwl_mvm *mvm)
1238 {
1239 kfree(mvm->nd_match_sets);
1240 mvm->nd_match_sets = NULL;
1241 mvm->n_nd_match_sets = 0;
1242 kfree(mvm->nd_channels);
1243 mvm->nd_channels = NULL;
1244 mvm->n_nd_channels = 0;
1245 }
1246
__iwl_mvm_suspend(struct ieee80211_hw * hw,struct cfg80211_wowlan * wowlan)1247 static int __iwl_mvm_suspend(struct ieee80211_hw *hw,
1248 struct cfg80211_wowlan *wowlan)
1249 {
1250 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1251 struct ieee80211_vif *vif = NULL;
1252 struct iwl_mvm_vif *mvmvif = NULL;
1253 struct ieee80211_sta *ap_sta = NULL;
1254 struct iwl_d3_manager_config d3_cfg_cmd = {
1255 /*
1256 * Program the minimum sleep time to 10 seconds, as many
1257 * platforms have issues processing a wakeup signal while
1258 * still being in the process of suspending.
1259 */
1260 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000),
1261 };
1262 int ret;
1263 int len __maybe_unused;
1264 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1265 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1266
1267 if (!wowlan) {
1268 /* mac80211 shouldn't get here */
1269 WARN_ON(1);
1270 return -EINVAL;
1271 }
1272
1273 vif = iwl_mvm_get_bss_vif(mvm);
1274 if (IS_ERR_OR_NULL(vif))
1275 return 1;
1276
1277 mutex_lock(&mvm->mutex);
1278
1279 set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
1280
1281 synchronize_net();
1282
1283 mvmvif = iwl_mvm_vif_from_mac80211(vif);
1284
1285 if (mvmvif->deflink.ap_sta_id == IWL_INVALID_STA) {
1286 /* if we're not associated, this must be netdetect */
1287 if (!wowlan->nd_config) {
1288 ret = 1;
1289 goto out_noreset;
1290 }
1291
1292 ret = iwl_mvm_netdetect_config(
1293 mvm, wowlan, wowlan->nd_config, vif);
1294 if (ret)
1295 goto out;
1296
1297 mvm->net_detect = true;
1298 } else {
1299 struct iwl_wowlan_config_cmd_v6 wowlan_config_cmd = {
1300 .offloading_tid = 0,
1301 };
1302
1303 wowlan_config_cmd.sta_id = mvmvif->deflink.ap_sta_id;
1304
1305 ap_sta = rcu_dereference_protected(
1306 mvm->fw_id_to_mac_id[mvmvif->deflink.ap_sta_id],
1307 lockdep_is_held(&mvm->mutex));
1308 if (IS_ERR_OR_NULL(ap_sta)) {
1309 ret = -EINVAL;
1310 goto out_noreset;
1311 }
1312
1313 ret = iwl_mvm_sta_ensure_queue(
1314 mvm, ap_sta->txq[wowlan_config_cmd.offloading_tid]);
1315 if (ret)
1316 goto out_noreset;
1317
1318 ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1319 vif, mvmvif, ap_sta);
1320 if (ret)
1321 goto out_noreset;
1322 ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1323 vif, mvmvif, &mvmvif->deflink,
1324 ap_sta);
1325 if (ret)
1326 goto out;
1327
1328 mvm->net_detect = false;
1329 }
1330
1331 ret = iwl_mvm_power_update_device(mvm);
1332 if (ret)
1333 goto out;
1334
1335 ret = iwl_mvm_power_update_mac(mvm);
1336 if (ret)
1337 goto out;
1338
1339 #ifdef CONFIG_IWLWIFI_DEBUGFS
1340 if (mvm->d3_wake_sysassert)
1341 d3_cfg_cmd.wakeup_flags |=
1342 cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR);
1343 #endif
1344
1345 /*
1346 * Prior to 9000 device family the driver needs to stop the dbg
1347 * recording before entering D3. In later devices the FW stops the
1348 * recording automatically.
1349 */
1350 if (mvm->trans->mac_cfg->device_family < IWL_DEVICE_FAMILY_9000)
1351 iwl_fw_dbg_stop_restart_recording(&mvm->fwrt, NULL, true);
1352
1353 /* must be last -- this switches firmware state */
1354 ret = iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD, 0, sizeof(d3_cfg_cmd),
1355 &d3_cfg_cmd);
1356 if (ret)
1357 goto out;
1358
1359 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1360
1361 ret = iwl_trans_d3_suspend(mvm->trans, !unified_image);
1362 out:
1363 if (ret < 0) {
1364 iwl_mvm_free_nd(mvm);
1365
1366 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
1367 }
1368 out_noreset:
1369 mutex_unlock(&mvm->mutex);
1370
1371 return ret;
1372 }
1373
iwl_mvm_suspend(struct ieee80211_hw * hw,struct cfg80211_wowlan * wowlan)1374 int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
1375 {
1376 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1377
1378 iwl_mvm_pause_tcm(mvm, true);
1379
1380 mutex_lock(&mvm->mutex);
1381 iwl_fw_runtime_suspend(&mvm->fwrt);
1382 mutex_unlock(&mvm->mutex);
1383
1384 return __iwl_mvm_suspend(hw, wowlan);
1385 }
1386
1387 struct iwl_multicast_key_data {
1388 u8 key[WOWLAN_KEY_MAX_SIZE];
1389 u8 len;
1390 u8 flags;
1391 u8 id;
1392 u8 ipn[6];
1393 };
1394
1395 /* converted data from the different status responses */
1396 struct iwl_wowlan_status_data {
1397 u64 replay_ctr;
1398 u32 num_of_gtk_rekeys;
1399 u32 received_beacons;
1400 u32 wakeup_reasons;
1401 u32 wake_packet_length;
1402 u32 wake_packet_bufsize;
1403 u16 pattern_number;
1404 u16 non_qos_seq_ctr;
1405 u16 qos_seq_ctr[8];
1406 u8 tid_tear_down;
1407 u8 tid_offloaded_tx;
1408
1409 struct {
1410 /* including RX MIC key for TKIP */
1411 u8 key[WOWLAN_KEY_MAX_SIZE];
1412 u8 len;
1413 u8 flags;
1414 u8 id;
1415 } gtk[WOWLAN_GTK_KEYS_NUM];
1416
1417 struct {
1418 /*
1419 * We store both the TKIP and AES representations
1420 * coming from the firmware because we decode the
1421 * data from there before we iterate the keys and
1422 * know which one we need.
1423 */
1424 struct {
1425 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT];
1426 } tkip, aes;
1427
1428 /*
1429 * We use -1 for when we have valid data but don't know
1430 * the key ID from firmware, and thus it needs to be
1431 * installed with the last key (depending on rekeying).
1432 */
1433 s8 key_id;
1434 bool valid;
1435 } gtk_seq[2];
1436
1437 struct {
1438 /* Same as above */
1439 struct {
1440 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT];
1441 u64 tx_pn;
1442 } tkip, aes;
1443 } ptk;
1444
1445 struct iwl_multicast_key_data igtk;
1446 struct iwl_multicast_key_data bigtk[WOWLAN_BIGTK_KEYS_NUM];
1447
1448 u8 *wake_packet;
1449 };
1450
iwl_mvm_report_wakeup_reasons(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_wowlan_status_data * status)1451 static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm,
1452 struct ieee80211_vif *vif,
1453 struct iwl_wowlan_status_data *status)
1454 {
1455 struct sk_buff *pkt = NULL;
1456 struct cfg80211_wowlan_wakeup wakeup = {
1457 .pattern_idx = -1,
1458 };
1459 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
1460 u32 reasons = status->wakeup_reasons;
1461
1462 if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
1463 wakeup_report = NULL;
1464 goto report;
1465 }
1466
1467 pm_wakeup_event(mvm->dev, 0);
1468
1469 if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET)
1470 wakeup.magic_pkt = true;
1471
1472 if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN)
1473 wakeup.pattern_idx =
1474 status->pattern_number;
1475
1476 if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1477 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH |
1478 IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE))
1479 wakeup.disconnect = true;
1480
1481 if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)
1482 wakeup.gtk_rekey_failure = true;
1483
1484 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
1485 wakeup.rfkill_release = true;
1486
1487 if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST)
1488 wakeup.eap_identity_req = true;
1489
1490 if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE)
1491 wakeup.four_way_handshake = true;
1492
1493 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS)
1494 wakeup.tcp_connlost = true;
1495
1496 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE)
1497 wakeup.tcp_nomoretokens = true;
1498
1499 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET)
1500 wakeup.tcp_match = true;
1501
1502 if (reasons & IWL_WAKEUP_BY_11W_UNPROTECTED_DEAUTH_OR_DISASSOC)
1503 wakeup.unprot_deauth_disassoc = true;
1504
1505 if (status->wake_packet) {
1506 int pktsize = status->wake_packet_bufsize;
1507 int pktlen = status->wake_packet_length;
1508 const u8 *pktdata = status->wake_packet;
1509 const struct ieee80211_hdr *hdr = (const void *)pktdata;
1510 int truncated = pktlen - pktsize;
1511
1512 /* this would be a firmware bug */
1513 if (WARN_ON_ONCE(truncated < 0))
1514 truncated = 0;
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 skb_put_data(pkt, pktdata, hdrlen);
1525 pktdata += hdrlen;
1526 pktsize -= hdrlen;
1527
1528 if (ieee80211_has_protected(hdr->frame_control)) {
1529 /*
1530 * This is unlocked and using gtk_i(c)vlen,
1531 * but since everything is under RTNL still
1532 * that's not really a problem - changing
1533 * it would be difficult.
1534 */
1535 if (is_multicast_ether_addr(hdr->addr1)) {
1536 ivlen = mvm->gtk_ivlen;
1537 icvlen += mvm->gtk_icvlen;
1538 } else {
1539 ivlen = mvm->ptk_ivlen;
1540 icvlen += mvm->ptk_icvlen;
1541 }
1542 }
1543
1544 /* if truncated, FCS/ICV is (partially) gone */
1545 if (truncated >= icvlen) {
1546 icvlen = 0;
1547 truncated -= icvlen;
1548 } else {
1549 icvlen -= truncated;
1550 truncated = 0;
1551 }
1552
1553 pktsize -= ivlen + icvlen;
1554 pktdata += ivlen;
1555
1556 skb_put_data(pkt, pktdata, pktsize);
1557
1558 if (ieee80211_data_to_8023(pkt, vif->addr, vif->type))
1559 goto report;
1560 wakeup.packet = pkt->data;
1561 wakeup.packet_present_len = pkt->len;
1562 wakeup.packet_len = pkt->len - truncated;
1563 wakeup.packet_80211 = false;
1564 } else {
1565 int fcslen = 4;
1566
1567 if (truncated >= 4) {
1568 truncated -= 4;
1569 fcslen = 0;
1570 } else {
1571 fcslen -= truncated;
1572 truncated = 0;
1573 }
1574 pktsize -= fcslen;
1575 wakeup.packet = status->wake_packet;
1576 wakeup.packet_present_len = pktsize;
1577 wakeup.packet_len = pktlen - truncated;
1578 wakeup.packet_80211 = true;
1579 }
1580 }
1581
1582 report:
1583 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
1584 kfree_skb(pkt);
1585 }
1586
iwl_mvm_le64_to_aes_seq(__le64 le_pn,struct ieee80211_key_seq * seq)1587 static void iwl_mvm_le64_to_aes_seq(__le64 le_pn, struct ieee80211_key_seq *seq)
1588 {
1589 u64 pn = le64_to_cpu(le_pn);
1590
1591 seq->ccmp.pn[0] = pn >> 40;
1592 seq->ccmp.pn[1] = pn >> 32;
1593 seq->ccmp.pn[2] = pn >> 24;
1594 seq->ccmp.pn[3] = pn >> 16;
1595 seq->ccmp.pn[4] = pn >> 8;
1596 seq->ccmp.pn[5] = pn;
1597 }
1598
iwl_mvm_aes_sc_to_seq(struct aes_sc * sc,struct ieee80211_key_seq * seq)1599 static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc,
1600 struct ieee80211_key_seq *seq)
1601 {
1602 iwl_mvm_le64_to_aes_seq(sc->pn, seq);
1603 }
1604
iwl_mvm_le64_to_tkip_seq(__le64 le_pn,struct ieee80211_key_seq * seq)1605 static void iwl_mvm_le64_to_tkip_seq(__le64 le_pn, struct ieee80211_key_seq *seq)
1606 {
1607 u64 pn = le64_to_cpu(le_pn);
1608
1609 seq->tkip.iv16 = (u16)pn;
1610 seq->tkip.iv32 = (u32)(pn >> 16);
1611 }
1612
iwl_mvm_tkip_sc_to_seq(struct tkip_sc * sc,struct ieee80211_key_seq * seq)1613 static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc,
1614 struct ieee80211_key_seq *seq)
1615 {
1616 seq->tkip.iv32 = le32_to_cpu(sc->iv32);
1617 seq->tkip.iv16 = le16_to_cpu(sc->iv16);
1618 }
1619
iwl_mvm_set_key_rx_seq_tids(struct ieee80211_key_conf * key,struct ieee80211_key_seq * seq)1620 static void iwl_mvm_set_key_rx_seq_tids(struct ieee80211_key_conf *key,
1621 struct ieee80211_key_seq *seq)
1622 {
1623 int tid;
1624
1625 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++)
1626 ieee80211_set_key_rx_seq(key, tid, &seq[tid]);
1627 }
1628
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)1629 static void iwl_mvm_set_aes_ptk_rx_seq(struct iwl_mvm *mvm,
1630 struct iwl_wowlan_status_data *status,
1631 struct ieee80211_sta *sta,
1632 struct ieee80211_key_conf *key)
1633 {
1634 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1635 struct iwl_mvm_key_pn *ptk_pn;
1636 int tid;
1637
1638 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.aes.seq);
1639
1640 if (!iwl_mvm_has_new_rx_api(mvm))
1641 return;
1642
1643
1644 rcu_read_lock();
1645 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]);
1646 if (WARN_ON(!ptk_pn)) {
1647 rcu_read_unlock();
1648 return;
1649 }
1650
1651 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1652 int i;
1653
1654 for (i = 1; i < mvm->trans->info.num_rxqs; i++)
1655 memcpy(ptk_pn->q[i].pn[tid],
1656 status->ptk.aes.seq[tid].ccmp.pn,
1657 IEEE80211_CCMP_PN_LEN);
1658 }
1659 rcu_read_unlock();
1660 }
1661
iwl_mvm_convert_key_counters(struct iwl_wowlan_status_data * status,union iwl_all_tsc_rsc * sc,u8 key_idx)1662 static void iwl_mvm_convert_key_counters(struct iwl_wowlan_status_data *status,
1663 union iwl_all_tsc_rsc *sc, u8 key_idx)
1664 {
1665 int i;
1666
1667 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT);
1668 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC);
1669
1670 /* GTK RX counters */
1671 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1672 iwl_mvm_tkip_sc_to_seq(&sc->tkip.multicast_rsc[i],
1673 &status->gtk_seq[0].tkip.seq[i]);
1674 iwl_mvm_aes_sc_to_seq(&sc->aes.multicast_rsc[i],
1675 &status->gtk_seq[0].aes.seq[i]);
1676 }
1677 status->gtk_seq[0].valid = true;
1678 status->gtk_seq[0].key_id = key_idx;
1679
1680 /* PTK TX counter */
1681 status->ptk.tkip.tx_pn = (u64)le16_to_cpu(sc->tkip.tsc.iv16) |
1682 ((u64)le32_to_cpu(sc->tkip.tsc.iv32) << 16);
1683 status->ptk.aes.tx_pn = le64_to_cpu(sc->aes.tsc.pn);
1684
1685 /* PTK RX counters */
1686 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1687 iwl_mvm_tkip_sc_to_seq(&sc->tkip.unicast_rsc[i],
1688 &status->ptk.tkip.seq[i]);
1689 iwl_mvm_aes_sc_to_seq(&sc->aes.unicast_rsc[i],
1690 &status->ptk.aes.seq[i]);
1691 }
1692 }
1693
1694 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)1695 iwl_mvm_convert_key_counters_v5_gtk_seq(struct iwl_wowlan_status_data *status,
1696 struct iwl_wowlan_all_rsc_tsc_v5 *sc,
1697 unsigned int idx, unsigned int key_id)
1698 {
1699 int tid;
1700
1701 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1702 iwl_mvm_le64_to_tkip_seq(sc->mcast_rsc[idx][tid],
1703 &status->gtk_seq[idx].tkip.seq[tid]);
1704 iwl_mvm_le64_to_aes_seq(sc->mcast_rsc[idx][tid],
1705 &status->gtk_seq[idx].aes.seq[tid]);
1706 }
1707
1708 status->gtk_seq[idx].valid = true;
1709 status->gtk_seq[idx].key_id = key_id;
1710 }
1711
1712 static void
iwl_mvm_convert_key_counters_v5(struct iwl_wowlan_status_data * status,struct iwl_wowlan_all_rsc_tsc_v5 * sc)1713 iwl_mvm_convert_key_counters_v5(struct iwl_wowlan_status_data *status,
1714 struct iwl_wowlan_all_rsc_tsc_v5 *sc)
1715 {
1716 int i, tid;
1717
1718 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT);
1719 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC);
1720 BUILD_BUG_ON(ARRAY_SIZE(sc->mcast_rsc) != ARRAY_SIZE(status->gtk_seq));
1721
1722 /* GTK RX counters */
1723 for (i = 0; i < ARRAY_SIZE(sc->mcast_key_id_map); i++) {
1724 u8 entry = sc->mcast_key_id_map[i];
1725
1726 if (entry < ARRAY_SIZE(sc->mcast_rsc))
1727 iwl_mvm_convert_key_counters_v5_gtk_seq(status, sc,
1728 entry, i);
1729 }
1730
1731 /* PTK TX counters not needed, assigned in device */
1732
1733 /* PTK RX counters */
1734 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1735 iwl_mvm_le64_to_tkip_seq(sc->ucast_rsc[tid],
1736 &status->ptk.tkip.seq[tid]);
1737 iwl_mvm_le64_to_aes_seq(sc->ucast_rsc[tid],
1738 &status->ptk.aes.seq[tid]);
1739 }
1740 }
1741
iwl_mvm_set_key_rx_seq_idx(struct ieee80211_key_conf * key,struct iwl_wowlan_status_data * status,int idx)1742 static void iwl_mvm_set_key_rx_seq_idx(struct ieee80211_key_conf *key,
1743 struct iwl_wowlan_status_data *status,
1744 int idx)
1745 {
1746 switch (key->cipher) {
1747 case WLAN_CIPHER_SUITE_CCMP:
1748 case WLAN_CIPHER_SUITE_GCMP:
1749 case WLAN_CIPHER_SUITE_GCMP_256:
1750 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].aes.seq);
1751 break;
1752 case WLAN_CIPHER_SUITE_TKIP:
1753 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].tkip.seq);
1754 break;
1755 default:
1756 WARN_ON(1);
1757 }
1758 }
1759
iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf * key,struct iwl_wowlan_status_data * status)1760 static void iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf *key,
1761 struct iwl_wowlan_status_data *status)
1762 {
1763 int i;
1764
1765 for (i = 0; i < ARRAY_SIZE(status->gtk_seq); i++) {
1766 if (!status->gtk_seq[i].valid)
1767 continue;
1768
1769 if (status->gtk_seq[i].key_id == key->keyidx)
1770 iwl_mvm_set_key_rx_seq_idx(key, status, i);
1771 }
1772 }
1773
1774 struct iwl_mvm_d3_gtk_iter_data {
1775 struct iwl_mvm *mvm;
1776 struct iwl_wowlan_status_data *status;
1777 };
1778
1779 static void
iwl_mvm_d3_set_igtk_bigtk_ipn(const struct iwl_multicast_key_data * key,struct ieee80211_key_seq * seq,u32 cipher)1780 iwl_mvm_d3_set_igtk_bigtk_ipn(const struct iwl_multicast_key_data *key,
1781 struct ieee80211_key_seq *seq, u32 cipher)
1782 {
1783 switch (cipher) {
1784 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
1785 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
1786 BUILD_BUG_ON(sizeof(seq->aes_gmac.pn) != sizeof(key->ipn));
1787 memcpy(seq->aes_gmac.pn, key->ipn, sizeof(seq->aes_gmac.pn));
1788 break;
1789 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
1790 case WLAN_CIPHER_SUITE_AES_CMAC:
1791 BUILD_BUG_ON(sizeof(seq->aes_cmac.pn) != sizeof(key->ipn));
1792 memcpy(seq->aes_cmac.pn, key->ipn, sizeof(seq->aes_cmac.pn));
1793 break;
1794 default:
1795 WARN_ON(1);
1796 }
1797 }
1798
1799 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)1800 iwl_mvm_d3_update_igtk_bigtk(struct iwl_wowlan_status_data *status,
1801 struct ieee80211_key_conf *key,
1802 struct iwl_multicast_key_data *key_data)
1803 {
1804 struct ieee80211_key_seq seq;
1805
1806 iwl_mvm_d3_set_igtk_bigtk_ipn(key_data, &seq, key->cipher);
1807 ieee80211_set_key_rx_seq(key, 0, &seq);
1808 }
1809
iwl_mvm_d3_update_keys(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key,void * _data)1810 static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw,
1811 struct ieee80211_vif *vif,
1812 struct ieee80211_sta *sta,
1813 struct ieee80211_key_conf *key,
1814 void *_data)
1815 {
1816 struct iwl_mvm_d3_gtk_iter_data *data = _data;
1817 struct iwl_wowlan_status_data *status = data->status;
1818 s8 keyidx;
1819
1820 switch (key->cipher) {
1821 case WLAN_CIPHER_SUITE_WEP40:
1822 case WLAN_CIPHER_SUITE_WEP104:
1823 /* ignore WEP completely, nothing to do */
1824 return;
1825 case WLAN_CIPHER_SUITE_CCMP:
1826 case WLAN_CIPHER_SUITE_GCMP:
1827 case WLAN_CIPHER_SUITE_GCMP_256:
1828 if (sta) {
1829 atomic64_set(&key->tx_pn, status->ptk.aes.tx_pn);
1830 iwl_mvm_set_aes_ptk_rx_seq(data->mvm, status, sta, key);
1831 return;
1832 }
1833 fallthrough;
1834 case WLAN_CIPHER_SUITE_TKIP:
1835 if (sta) {
1836 atomic64_set(&key->tx_pn, status->ptk.tkip.tx_pn);
1837 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.tkip.seq);
1838 return;
1839 }
1840 keyidx = key->keyidx;
1841 /*
1842 * Update the seq even if there was a rekey. If there was a
1843 * rekey, we will update again after replacing the key
1844 */
1845 if ((status->gtk[0].len && keyidx == status->gtk[0].id) ||
1846 (status->gtk[1].len && keyidx == status->gtk[1].id))
1847 iwl_mvm_set_key_rx_seq(key, status);
1848 break;
1849 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
1850 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
1851 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
1852 case WLAN_CIPHER_SUITE_AES_CMAC:
1853 if (key->keyidx == 4 || key->keyidx == 5) {
1854 iwl_mvm_d3_update_igtk_bigtk(status, key,
1855 &status->igtk);
1856 }
1857 if (key->keyidx == 6 || key->keyidx == 7) {
1858 u8 idx = key->keyidx == status->bigtk[1].id;
1859
1860 iwl_mvm_d3_update_igtk_bigtk(status, key,
1861 &status->bigtk[idx]);
1862 }
1863 }
1864 }
1865
iwl_mvm_gtk_rekey(struct iwl_wowlan_status_data * status,struct ieee80211_vif * vif,struct iwl_mvm * mvm)1866 static bool iwl_mvm_gtk_rekey(struct iwl_wowlan_status_data *status,
1867 struct ieee80211_vif *vif,
1868 struct iwl_mvm *mvm)
1869 {
1870 int i, j;
1871 struct ieee80211_key_conf *key;
1872
1873 for (i = 0; i < ARRAY_SIZE(status->gtk); i++) {
1874 if (!status->gtk[i].len)
1875 continue;
1876
1877 IWL_DEBUG_WOWLAN(mvm,
1878 "Received from FW GTK: key index %d\n",
1879 status->gtk[i].id);
1880
1881 key = ieee80211_gtk_rekey_add(vif, status->gtk[i].id,
1882 status->gtk[i].key,
1883 sizeof(status->gtk[i].key), -1);
1884 if (IS_ERR(key)) {
1885 /* FW may send also the old keys */
1886 if (PTR_ERR(key) == -EALREADY)
1887 continue;
1888 return false;
1889 }
1890
1891 for (j = 0; j < ARRAY_SIZE(status->gtk_seq); j++) {
1892 if (!status->gtk_seq[j].valid ||
1893 status->gtk_seq[j].key_id != key->keyidx)
1894 continue;
1895 iwl_mvm_set_key_rx_seq_idx(key, status, j);
1896 break;
1897 }
1898 WARN_ON(j == ARRAY_SIZE(status->gtk_seq));
1899 }
1900
1901 return true;
1902 }
1903
1904 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)1905 iwl_mvm_d3_igtk_bigtk_rekey_add(struct iwl_wowlan_status_data *status,
1906 struct ieee80211_vif *vif,
1907 struct iwl_multicast_key_data *key_data)
1908 {
1909 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1910 struct ieee80211_key_conf *key_config;
1911 struct ieee80211_key_seq seq;
1912 s8 keyidx = key_data->id;
1913
1914 if (!key_data->len)
1915 return true;
1916
1917 key_config = ieee80211_gtk_rekey_add(vif, keyidx, key_data->key,
1918 sizeof(key_data->key), -1);
1919 if (IS_ERR(key_config)) {
1920 /* FW may send also the old keys */
1921 return PTR_ERR(key_config) == -EALREADY;
1922 }
1923
1924 iwl_mvm_d3_set_igtk_bigtk_ipn(key_data, &seq, key_config->cipher);
1925 ieee80211_set_key_rx_seq(key_config, 0, &seq);
1926
1927 if (keyidx == 4 || keyidx == 5) {
1928 if (mvmvif->deflink.igtk)
1929 mvmvif->deflink.igtk->hw_key_idx = STA_KEY_IDX_INVALID;
1930 mvmvif->deflink.igtk = key_config;
1931 }
1932
1933 if (vif->type == NL80211_IFTYPE_STATION && (keyidx == 6 || keyidx == 7))
1934 rcu_assign_pointer(mvmvif->bcn_prot.keys[keyidx - 6],
1935 key_config);
1936
1937 return true;
1938 }
1939
iwl_mvm_lookup_wowlan_status_ver(struct iwl_mvm * mvm)1940 static int iwl_mvm_lookup_wowlan_status_ver(struct iwl_mvm *mvm)
1941 {
1942 u8 notif_ver;
1943
1944 if (!fw_has_api(&mvm->fw->ucode_capa,
1945 IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL))
1946 return 6;
1947
1948 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */
1949 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP,
1950 WOWLAN_GET_STATUSES, 0);
1951 if (!notif_ver)
1952 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
1953 WOWLAN_GET_STATUSES, 7);
1954
1955 return notif_ver;
1956 }
1957
iwl_mvm_setup_connection_keep(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_wowlan_status_data * status)1958 static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm,
1959 struct ieee80211_vif *vif,
1960 struct iwl_wowlan_status_data *status)
1961 {
1962 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1963 struct iwl_mvm_d3_gtk_iter_data gtkdata = {
1964 .mvm = mvm,
1965 .status = status,
1966 };
1967 int i;
1968 u32 disconnection_reasons =
1969 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1970 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH;
1971
1972 if (!status || !vif->bss_conf.bssid)
1973 return false;
1974 /*
1975 * invalidate all other GTKs that might still exist and update
1976 * the one that we used
1977 */
1978 ieee80211_iter_keys(mvm->hw, vif,
1979 iwl_mvm_d3_update_keys, >kdata);
1980
1981 if (status->num_of_gtk_rekeys) {
1982 __be64 replay_ctr = cpu_to_be64(status->replay_ctr);
1983
1984 IWL_DEBUG_WOWLAN(mvm, "num of GTK rekeying %d\n",
1985 status->num_of_gtk_rekeys);
1986
1987 if (!iwl_mvm_gtk_rekey(status, vif, mvm))
1988 return false;
1989
1990 if (!iwl_mvm_d3_igtk_bigtk_rekey_add(status, vif,
1991 &status->igtk))
1992 return false;
1993
1994 for (i = 0; i < ARRAY_SIZE(status->bigtk); i++) {
1995 if (!iwl_mvm_d3_igtk_bigtk_rekey_add(status, vif,
1996 &status->bigtk[i]))
1997 return false;
1998 }
1999
2000 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid,
2001 (void *)&replay_ctr, GFP_KERNEL);
2002 }
2003
2004 if (iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP,
2005 WOWLAN_GET_STATUSES,
2006 IWL_FW_CMD_VER_UNKNOWN) < 10) {
2007 mvmvif->seqno_valid = true;
2008 /* +0x10 because the set API expects next-to-use, not last-used */
2009 mvmvif->seqno = status->non_qos_seq_ctr + 0x10;
2010 }
2011
2012 if (status->wakeup_reasons & disconnection_reasons)
2013 return false;
2014
2015 return true;
2016 }
2017
iwl_mvm_convert_gtk_v2(struct iwl_wowlan_status_data * status,struct iwl_wowlan_gtk_status_v2 * data)2018 static void iwl_mvm_convert_gtk_v2(struct iwl_wowlan_status_data *status,
2019 struct iwl_wowlan_gtk_status_v2 *data)
2020 {
2021 BUILD_BUG_ON(sizeof(status->gtk[0].key) < sizeof(data->key));
2022 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY +
2023 sizeof(data->tkip_mic_key) >
2024 sizeof(status->gtk[0].key));
2025
2026 status->gtk[0].len = data->key_len;
2027 status->gtk[0].flags = data->key_flags;
2028 status->gtk[0].id = status->gtk[0].flags & IWL_WOWLAN_GTK_IDX_MASK;
2029
2030 memcpy(status->gtk[0].key, data->key, sizeof(data->key));
2031
2032 /* if it's as long as the TKIP encryption key, copy MIC key */
2033 if (status->gtk[0].len == NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY)
2034 memcpy(status->gtk[0].key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
2035 data->tkip_mic_key, sizeof(data->tkip_mic_key));
2036 }
2037
iwl_mvm_convert_gtk_v3(struct iwl_wowlan_status_data * status,struct iwl_wowlan_gtk_status_v3 * data)2038 static void iwl_mvm_convert_gtk_v3(struct iwl_wowlan_status_data *status,
2039 struct iwl_wowlan_gtk_status_v3 *data)
2040 {
2041 int data_idx, status_idx = 0;
2042
2043 BUILD_BUG_ON(sizeof(status->gtk[0].key) < sizeof(data[0].key));
2044 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY +
2045 sizeof(data[0].tkip_mic_key) >
2046 sizeof(status->gtk[0].key));
2047 BUILD_BUG_ON(ARRAY_SIZE(status->gtk) < WOWLAN_GTK_KEYS_NUM);
2048 for (data_idx = 0; data_idx < ARRAY_SIZE(status->gtk); data_idx++) {
2049 if (!(data[data_idx].key_len))
2050 continue;
2051 status->gtk[status_idx].len = data[data_idx].key_len;
2052 status->gtk[status_idx].flags = data[data_idx].key_flags;
2053 status->gtk[status_idx].id = status->gtk[status_idx].flags &
2054 IWL_WOWLAN_GTK_IDX_MASK;
2055
2056 memcpy(status->gtk[status_idx].key, data[data_idx].key,
2057 sizeof(data[data_idx].key));
2058
2059 /* if it's as long as the TKIP encryption key, copy MIC key */
2060 if (status->gtk[status_idx].len ==
2061 NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY)
2062 memcpy(status->gtk[status_idx].key +
2063 NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
2064 data[data_idx].tkip_mic_key,
2065 sizeof(data[data_idx].tkip_mic_key));
2066 status_idx++;
2067 }
2068 }
2069
iwl_mvm_convert_igtk(struct iwl_wowlan_status_data * status,struct iwl_wowlan_igtk_status_v1 * data)2070 static void iwl_mvm_convert_igtk(struct iwl_wowlan_status_data *status,
2071 struct iwl_wowlan_igtk_status_v1 *data)
2072 {
2073 int i;
2074
2075 BUILD_BUG_ON(sizeof(status->igtk.key) < sizeof(data->key));
2076 BUILD_BUG_ON(sizeof(status->igtk.ipn) != sizeof(data->ipn));
2077
2078 if (!data->key_len)
2079 return;
2080
2081 status->igtk.len = data->key_len;
2082 status->igtk.flags = data->key_flags;
2083 status->igtk.id = u32_get_bits(data->key_flags,
2084 IWL_WOWLAN_IGTK_BIGTK_IDX_MASK)
2085 + WOWLAN_IGTK_MIN_INDEX;
2086
2087 memcpy(status->igtk.key, data->key, sizeof(data->key));
2088
2089 /* mac80211 expects big endian for memcmp() to work, convert */
2090 for (i = 0; i < sizeof(data->ipn); i++)
2091 status->igtk.ipn[i] = data->ipn[sizeof(data->ipn) - i - 1];
2092 }
2093
iwl_mvm_convert_bigtk(struct iwl_wowlan_status_data * status,const struct iwl_wowlan_igtk_status_v1 * data)2094 static void iwl_mvm_convert_bigtk(struct iwl_wowlan_status_data *status,
2095 const struct iwl_wowlan_igtk_status_v1 *data)
2096 {
2097 int data_idx, status_idx = 0;
2098
2099 BUILD_BUG_ON(ARRAY_SIZE(status->bigtk) < WOWLAN_BIGTK_KEYS_NUM);
2100
2101 for (data_idx = 0; data_idx < WOWLAN_BIGTK_KEYS_NUM; data_idx++) {
2102 if (!data[data_idx].key_len)
2103 continue;
2104
2105 status->bigtk[status_idx].len = data[data_idx].key_len;
2106 status->bigtk[status_idx].flags = data[data_idx].key_flags;
2107 status->bigtk[status_idx].id =
2108 u32_get_bits(data[data_idx].key_flags,
2109 IWL_WOWLAN_IGTK_BIGTK_IDX_MASK)
2110 + WOWLAN_BIGTK_MIN_INDEX;
2111
2112 BUILD_BUG_ON(sizeof(status->bigtk[status_idx].key) <
2113 sizeof(data[data_idx].key));
2114 BUILD_BUG_ON(sizeof(status->bigtk[status_idx].ipn) <
2115 sizeof(data[data_idx].ipn));
2116
2117 memcpy(status->bigtk[status_idx].key, data[data_idx].key,
2118 sizeof(data[data_idx].key));
2119 memcpy(status->bigtk[status_idx].ipn, data[data_idx].ipn,
2120 sizeof(data[data_idx].ipn));
2121 status_idx++;
2122 }
2123 }
2124
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)2125 static void iwl_mvm_parse_wowlan_info_notif(struct iwl_mvm *mvm,
2126 struct iwl_wowlan_info_notif_v5 *data,
2127 struct iwl_wowlan_status_data *status,
2128 u32 len)
2129 {
2130 if (IWL_FW_CHECK(mvm, data->num_mlo_link_keys,
2131 "MLO is not supported, shouldn't receive MLO keys\n"))
2132 return;
2133
2134 if (len < sizeof(*data)) {
2135 IWL_ERR(mvm, "Invalid WoWLAN info notification!\n");
2136 status = NULL;
2137 return;
2138 }
2139
2140 if (mvm->fast_resume)
2141 return;
2142
2143 iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc);
2144 iwl_mvm_convert_gtk_v3(status, data->gtk);
2145 iwl_mvm_convert_igtk(status, &data->igtk[0]);
2146 iwl_mvm_convert_bigtk(status, data->bigtk);
2147 status->replay_ctr = le64_to_cpu(data->replay_ctr);
2148 status->pattern_number = le16_to_cpu(data->pattern_number);
2149 status->tid_offloaded_tx = data->tid_offloaded_tx;
2150 if (IWL_FW_CHECK(mvm,
2151 data->tid_offloaded_tx >=
2152 ARRAY_SIZE(status->qos_seq_ctr),
2153 "tid_offloaded_tx is out of bound %d\n",
2154 data->tid_offloaded_tx))
2155 data->tid_offloaded_tx = 0;
2156 status->qos_seq_ctr[data->tid_offloaded_tx] =
2157 le16_to_cpu(data->qos_seq_ctr);
2158 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons);
2159 status->num_of_gtk_rekeys =
2160 le32_to_cpu(data->num_of_gtk_rekeys);
2161 status->received_beacons = le32_to_cpu(data->received_beacons);
2162 status->tid_tear_down = data->tid_tear_down;
2163 }
2164
2165 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)2166 iwl_mvm_parse_wowlan_info_notif_v3(struct iwl_mvm *mvm,
2167 struct iwl_wowlan_info_notif_v3 *data,
2168 struct iwl_wowlan_status_data *status,
2169 u32 len)
2170 {
2171 u32 i;
2172
2173 if (len < sizeof(*data)) {
2174 IWL_ERR(mvm, "Invalid WoWLAN info notification!\n");
2175 status = NULL;
2176 return;
2177 }
2178
2179 if (mvm->fast_resume)
2180 return;
2181
2182 iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc);
2183 iwl_mvm_convert_gtk_v3(status, data->gtk);
2184 iwl_mvm_convert_igtk(status, &data->igtk[0]);
2185 iwl_mvm_convert_bigtk(status, data->bigtk);
2186 status->replay_ctr = le64_to_cpu(data->replay_ctr);
2187 status->pattern_number = le16_to_cpu(data->pattern_number);
2188 for (i = 0; i < IWL_MAX_TID_COUNT; i++)
2189 status->qos_seq_ctr[i] =
2190 le16_to_cpu(data->qos_seq_ctr[i]);
2191 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons);
2192 status->num_of_gtk_rekeys =
2193 le32_to_cpu(data->num_of_gtk_rekeys);
2194 status->received_beacons = le32_to_cpu(data->received_beacons);
2195 status->tid_tear_down = data->tid_tear_down;
2196 }
2197
2198 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)2199 iwl_mvm_parse_wowlan_info_notif_v1(struct iwl_mvm *mvm,
2200 struct iwl_wowlan_info_notif_v1 *data,
2201 struct iwl_wowlan_status_data *status,
2202 u32 len)
2203 {
2204 u32 i;
2205
2206 if (len < sizeof(*data)) {
2207 IWL_ERR(mvm, "Invalid WoWLAN info notification!\n");
2208 status = NULL;
2209 return;
2210 }
2211
2212 iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc);
2213 iwl_mvm_convert_gtk_v3(status, data->gtk);
2214 iwl_mvm_convert_igtk(status, &data->igtk[0]);
2215 status->replay_ctr = le64_to_cpu(data->replay_ctr);
2216 status->pattern_number = le16_to_cpu(data->pattern_number);
2217 for (i = 0; i < IWL_MAX_TID_COUNT; i++)
2218 status->qos_seq_ctr[i] =
2219 le16_to_cpu(data->qos_seq_ctr[i]);
2220 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons);
2221 status->num_of_gtk_rekeys =
2222 le32_to_cpu(data->num_of_gtk_rekeys);
2223 status->received_beacons = le32_to_cpu(data->received_beacons);
2224 status->tid_tear_down = data->tid_tear_down;
2225 }
2226
2227 /* Occasionally, templates would be nice. This is one of those times ... */
2228 #define iwl_mvm_parse_wowlan_status_common(_ver) \
2229 static struct iwl_wowlan_status_data * \
2230 iwl_mvm_parse_wowlan_status_common_ ## _ver(struct iwl_mvm *mvm, \
2231 struct iwl_wowlan_status_ ##_ver *data,\
2232 int len) \
2233 { \
2234 struct iwl_wowlan_status_data *status; \
2235 int data_size, i; \
2236 \
2237 if (len < sizeof(*data)) { \
2238 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \
2239 return NULL; \
2240 } \
2241 \
2242 data_size = ALIGN(le32_to_cpu(data->wake_packet_bufsize), 4); \
2243 if (len != sizeof(*data) + data_size) { \
2244 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \
2245 return NULL; \
2246 } \
2247 \
2248 status = kzalloc(sizeof(*status), GFP_KERNEL); \
2249 if (!status) \
2250 return NULL; \
2251 \
2252 /* copy all the common fields */ \
2253 status->replay_ctr = le64_to_cpu(data->replay_ctr); \
2254 status->pattern_number = le16_to_cpu(data->pattern_number); \
2255 status->non_qos_seq_ctr = le16_to_cpu(data->non_qos_seq_ctr); \
2256 for (i = 0; i < 8; i++) \
2257 status->qos_seq_ctr[i] = \
2258 le16_to_cpu(data->qos_seq_ctr[i]); \
2259 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); \
2260 status->num_of_gtk_rekeys = \
2261 le32_to_cpu(data->num_of_gtk_rekeys); \
2262 status->received_beacons = le32_to_cpu(data->received_beacons); \
2263 status->wake_packet_length = \
2264 le32_to_cpu(data->wake_packet_length); \
2265 status->wake_packet_bufsize = \
2266 le32_to_cpu(data->wake_packet_bufsize); \
2267 if (status->wake_packet_bufsize) { \
2268 status->wake_packet = \
2269 kmemdup(data->wake_packet, \
2270 status->wake_packet_bufsize, \
2271 GFP_KERNEL); \
2272 if (!status->wake_packet) { \
2273 kfree(status); \
2274 return NULL; \
2275 } \
2276 } else { \
2277 status->wake_packet = NULL; \
2278 } \
2279 \
2280 return status; \
2281 }
2282
2283 iwl_mvm_parse_wowlan_status_common(v6)
iwl_mvm_parse_wowlan_status_common(v7)2284 iwl_mvm_parse_wowlan_status_common(v7)
2285
2286 static struct iwl_wowlan_status_data *
2287 iwl_mvm_send_wowlan_get_status(struct iwl_mvm *mvm, u8 sta_id)
2288 {
2289 struct iwl_wowlan_status_data *status;
2290 struct iwl_wowlan_get_status_cmd get_status_cmd = {
2291 .sta_id = cpu_to_le32(sta_id),
2292 };
2293 struct iwl_host_cmd cmd = {
2294 .id = WOWLAN_GET_STATUSES,
2295 .flags = CMD_WANT_SKB,
2296 .data = { &get_status_cmd, },
2297 .len = { sizeof(get_status_cmd), },
2298 };
2299 int ret, len;
2300 u8 notif_ver;
2301 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id,
2302 IWL_FW_CMD_VER_UNKNOWN);
2303
2304 if (cmd_ver == IWL_FW_CMD_VER_UNKNOWN)
2305 cmd.len[0] = 0;
2306
2307 lockdep_assert_held(&mvm->mutex);
2308
2309 ret = iwl_mvm_send_cmd(mvm, &cmd);
2310 if (ret) {
2311 IWL_ERR(mvm, "failed to query wakeup status (%d)\n", ret);
2312 return ERR_PTR(ret);
2313 }
2314
2315 len = iwl_rx_packet_payload_len(cmd.resp_pkt);
2316
2317 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */
2318 notif_ver = iwl_mvm_lookup_wowlan_status_ver(mvm);
2319
2320 if (notif_ver < 7) {
2321 struct iwl_wowlan_status_v6 *v6 = (void *)cmd.resp_pkt->data;
2322
2323 status = iwl_mvm_parse_wowlan_status_common_v6(mvm, v6, len);
2324 if (!status)
2325 goto out_free_resp;
2326
2327 BUILD_BUG_ON(sizeof(v6->gtk.decrypt_key) >
2328 sizeof(status->gtk[0].key));
2329 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY +
2330 sizeof(v6->gtk.tkip_mic_key) >
2331 sizeof(status->gtk[0].key));
2332
2333 /* copy GTK info to the right place */
2334 memcpy(status->gtk[0].key, v6->gtk.decrypt_key,
2335 sizeof(v6->gtk.decrypt_key));
2336 memcpy(status->gtk[0].key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
2337 v6->gtk.tkip_mic_key,
2338 sizeof(v6->gtk.tkip_mic_key));
2339
2340 iwl_mvm_convert_key_counters(status, &v6->gtk.rsc.all_tsc_rsc,
2341 v6->gtk.key_index);
2342
2343 /* hardcode the key length to 16 since v6 only supports 16 */
2344 status->gtk[0].len = 16;
2345
2346 /*
2347 * The key index only uses 2 bits (values 0 to 3) and
2348 * we always set bit 7 which means this is the
2349 * currently used key.
2350 */
2351 status->gtk[0].flags = v6->gtk.key_index | BIT(7);
2352 status->gtk[0].id = v6->gtk.key_index;
2353 } else if (notif_ver == 7) {
2354 struct iwl_wowlan_status_v7 *v7 = (void *)cmd.resp_pkt->data;
2355
2356 status = iwl_mvm_parse_wowlan_status_common_v7(mvm, v7, len);
2357 if (!status)
2358 goto out_free_resp;
2359
2360 iwl_mvm_convert_key_counters(status, &v7->gtk[0].rsc.all_tsc_rsc,
2361 v7->gtk[0].key_flags & IWL_WOWLAN_GTK_IDX_MASK);
2362 iwl_mvm_convert_gtk_v2(status, &v7->gtk[0]);
2363 iwl_mvm_convert_igtk(status, &v7->igtk[0]);
2364 } else {
2365 IWL_ERR(mvm,
2366 "Firmware advertises unknown WoWLAN status response %d!\n",
2367 notif_ver);
2368 status = NULL;
2369 }
2370
2371 out_free_resp:
2372 iwl_free_resp(&cmd);
2373 return status;
2374 }
2375
2376 /* releases the MVM mutex */
iwl_mvm_query_wakeup_reasons(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_wowlan_status_data * status)2377 static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm,
2378 struct ieee80211_vif *vif,
2379 struct iwl_wowlan_status_data *status)
2380 {
2381 int i;
2382 bool keep = false;
2383 struct iwl_mvm_sta *mvm_ap_sta;
2384 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2385 int wowlan_info_ver = iwl_fw_lookup_notif_ver(mvm->fw,
2386 PROT_OFFLOAD_GROUP,
2387 WOWLAN_INFO_NOTIFICATION,
2388 IWL_FW_CMD_VER_UNKNOWN);
2389
2390 if (!status)
2391 goto out_unlock;
2392
2393 IWL_DEBUG_WOWLAN(mvm, "wakeup reason 0x%x\n",
2394 status->wakeup_reasons);
2395
2396 mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm,
2397 mvmvif->deflink.ap_sta_id);
2398 if (!mvm_ap_sta)
2399 goto out_unlock;
2400
2401 /* firmware stores last-used value, we store next value */
2402 if (wowlan_info_ver >= 5) {
2403 mvm_ap_sta->tid_data[status->tid_offloaded_tx].seq_number =
2404 status->qos_seq_ctr[status->tid_offloaded_tx] + 0x10;
2405 } else {
2406 for (i = 0; i < IWL_MAX_TID_COUNT; i++)
2407 mvm_ap_sta->tid_data[i].seq_number =
2408 status->qos_seq_ctr[i] + 0x10;
2409 }
2410
2411 if (mvm->trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_22000) {
2412 i = mvm->offload_tid;
2413 iwl_trans_set_q_ptrs(mvm->trans,
2414 mvm_ap_sta->tid_data[i].txq_id,
2415 mvm_ap_sta->tid_data[i].seq_number >> 4);
2416 }
2417
2418 iwl_mvm_report_wakeup_reasons(mvm, vif, status);
2419
2420 keep = iwl_mvm_setup_connection_keep(mvm, vif, status);
2421 out_unlock:
2422 mutex_unlock(&mvm->mutex);
2423 return keep;
2424 }
2425
2426 #define ND_QUERY_BUF_LEN (sizeof(struct iwl_scan_offload_profile_match) * \
2427 IWL_SCAN_MAX_PROFILES)
2428
2429 struct iwl_mvm_nd_results {
2430 u32 matched_profiles;
2431 u8 matches[ND_QUERY_BUF_LEN];
2432 };
2433
2434 static int
iwl_mvm_netdetect_query_results(struct iwl_mvm * mvm,struct iwl_mvm_nd_results * results)2435 iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm,
2436 struct iwl_mvm_nd_results *results)
2437 {
2438 struct iwl_scan_offload_match_info *query;
2439 struct iwl_host_cmd cmd = {
2440 .id = SCAN_OFFLOAD_PROFILES_QUERY_CMD,
2441 .flags = CMD_WANT_SKB,
2442 };
2443 int ret, len;
2444 size_t query_len, matches_len;
2445 int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw);
2446
2447 ret = iwl_mvm_send_cmd(mvm, &cmd);
2448 if (ret) {
2449 IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret);
2450 return ret;
2451 }
2452
2453 if (fw_has_api(&mvm->fw->ucode_capa,
2454 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2455 query_len = sizeof(struct iwl_scan_offload_match_info);
2456 matches_len = sizeof(struct iwl_scan_offload_profile_match) *
2457 max_profiles;
2458 } else {
2459 query_len = sizeof(struct iwl_scan_offload_profiles_query_v1);
2460 matches_len = sizeof(struct iwl_scan_offload_profile_match_v1) *
2461 max_profiles;
2462 }
2463
2464 len = iwl_rx_packet_payload_len(cmd.resp_pkt);
2465 if (len < query_len) {
2466 IWL_ERR(mvm, "Invalid scan offload profiles query response!\n");
2467 ret = -EIO;
2468 goto out_free_resp;
2469 }
2470
2471 query = (void *)cmd.resp_pkt->data;
2472
2473 results->matched_profiles = le32_to_cpu(query->matched_profiles);
2474 memcpy(results->matches, query->matches, matches_len);
2475
2476 #ifdef CONFIG_IWLWIFI_DEBUGFS
2477 mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done);
2478 #endif
2479
2480 out_free_resp:
2481 iwl_free_resp(&cmd);
2482 return ret;
2483 }
2484
iwl_mvm_query_num_match_chans(struct iwl_mvm * mvm,struct iwl_mvm_nd_results * results,int idx)2485 static int iwl_mvm_query_num_match_chans(struct iwl_mvm *mvm,
2486 struct iwl_mvm_nd_results *results,
2487 int idx)
2488 {
2489 int n_chans = 0, i;
2490
2491 if (fw_has_api(&mvm->fw->ucode_capa,
2492 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2493 struct iwl_scan_offload_profile_match *matches =
2494 (void *)results->matches;
2495
2496 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; i++)
2497 n_chans += hweight8(matches[idx].matching_channels[i]);
2498 } else {
2499 struct iwl_scan_offload_profile_match_v1 *matches =
2500 (void *)results->matches;
2501
2502 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1; i++)
2503 n_chans += hweight8(matches[idx].matching_channels[i]);
2504 }
2505
2506 return n_chans;
2507 }
2508
iwl_mvm_query_set_freqs(struct iwl_mvm * mvm,struct iwl_mvm_nd_results * results,struct cfg80211_wowlan_nd_match * match,int idx)2509 static void iwl_mvm_query_set_freqs(struct iwl_mvm *mvm,
2510 struct iwl_mvm_nd_results *results,
2511 struct cfg80211_wowlan_nd_match *match,
2512 int idx)
2513 {
2514 int i;
2515 int n_channels = 0;
2516
2517 if (fw_has_api(&mvm->fw->ucode_capa,
2518 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2519 struct iwl_scan_offload_profile_match *matches =
2520 (void *)results->matches;
2521
2522 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; i++)
2523 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
2524 match->channels[n_channels++] =
2525 mvm->nd_channels[i]->center_freq;
2526 } else {
2527 struct iwl_scan_offload_profile_match_v1 *matches =
2528 (void *)results->matches;
2529
2530 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1 * 8; i++)
2531 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
2532 match->channels[n_channels++] =
2533 mvm->nd_channels[i]->center_freq;
2534 }
2535 /* We may have ended up with fewer channels than we allocated. */
2536 match->n_channels = n_channels;
2537 }
2538
2539 /**
2540 * enum iwl_d3_notif - d3 notifications
2541 * @IWL_D3_NOTIF_WOWLAN_INFO: WOWLAN_INFO_NOTIF was received
2542 * @IWL_D3_NOTIF_WOWLAN_WAKE_PKT: WOWLAN_WAKE_PKT_NOTIF was received
2543 * @IWL_D3_NOTIF_PROT_OFFLOAD: PROT_OFFLOAD_NOTIF was received
2544 * @IWL_D3_ND_MATCH_INFO: OFFLOAD_MATCH_INFO_NOTIF was received
2545 * @IWL_D3_NOTIF_D3_END_NOTIF: D3_END_NOTIF was received
2546 */
2547 enum iwl_d3_notif {
2548 IWL_D3_NOTIF_WOWLAN_INFO = BIT(0),
2549 IWL_D3_NOTIF_WOWLAN_WAKE_PKT = BIT(1),
2550 IWL_D3_NOTIF_PROT_OFFLOAD = BIT(2),
2551 IWL_D3_ND_MATCH_INFO = BIT(3),
2552 IWL_D3_NOTIF_D3_END_NOTIF = BIT(4)
2553 };
2554
2555 /* manage d3 resume data */
2556 struct iwl_d3_data {
2557 struct iwl_wowlan_status_data *status;
2558 u32 d3_end_flags;
2559 u32 notif_expected; /* bitmap - see &enum iwl_d3_notif */
2560 u32 notif_received; /* bitmap - see &enum iwl_d3_notif */
2561 struct iwl_mvm_nd_results *nd_results;
2562 bool nd_results_valid;
2563 };
2564
iwl_mvm_query_netdetect_reasons(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_d3_data * d3_data)2565 static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm,
2566 struct ieee80211_vif *vif,
2567 struct iwl_d3_data *d3_data)
2568 {
2569 struct cfg80211_wowlan_nd_info *net_detect = NULL;
2570 struct cfg80211_wowlan_wakeup wakeup = {
2571 .pattern_idx = -1,
2572 };
2573 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
2574 unsigned long matched_profiles;
2575 u32 reasons = 0;
2576 int i, n_matches, ret;
2577
2578 if (WARN_ON(!d3_data || !d3_data->status))
2579 goto out;
2580
2581 reasons = d3_data->status->wakeup_reasons;
2582
2583 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
2584 wakeup.rfkill_release = true;
2585
2586 if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS)
2587 goto out;
2588
2589 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
2590 WOWLAN_INFO_NOTIFICATION, 0)) {
2591 IWL_INFO(mvm, "Query FW for ND results\n");
2592 ret = iwl_mvm_netdetect_query_results(mvm, d3_data->nd_results);
2593
2594 } else {
2595 IWL_INFO(mvm, "Notification based ND results\n");
2596 ret = d3_data->nd_results_valid ? 0 : -1;
2597 }
2598
2599 if (ret || !d3_data->nd_results->matched_profiles) {
2600 wakeup_report = NULL;
2601 goto out;
2602 }
2603
2604 matched_profiles = d3_data->nd_results->matched_profiles;
2605 if (mvm->n_nd_match_sets) {
2606 n_matches = hweight_long(matched_profiles);
2607 } else {
2608 IWL_ERR(mvm, "no net detect match information available\n");
2609 n_matches = 0;
2610 }
2611
2612 net_detect = kzalloc_flex(*net_detect, matches, n_matches);
2613 if (!net_detect || !n_matches)
2614 goto out_report_nd;
2615 net_detect->n_matches = n_matches;
2616 n_matches = 0;
2617
2618 for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) {
2619 struct cfg80211_wowlan_nd_match *match;
2620 int idx, n_channels = 0;
2621
2622 n_channels = iwl_mvm_query_num_match_chans(mvm,
2623 d3_data->nd_results,
2624 i);
2625
2626 match = kzalloc_flex(*match, channels, n_channels);
2627 if (!match)
2628 goto out_report_nd;
2629 match->n_channels = n_channels;
2630
2631 net_detect->matches[n_matches++] = match;
2632
2633 /* We inverted the order of the SSIDs in the scan
2634 * request, so invert the index here.
2635 */
2636 idx = mvm->n_nd_match_sets - i - 1;
2637 match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len;
2638 memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid,
2639 match->ssid.ssid_len);
2640
2641 if (mvm->n_nd_channels < n_channels)
2642 continue;
2643
2644 iwl_mvm_query_set_freqs(mvm, d3_data->nd_results, match, i);
2645 }
2646 /* We may have fewer matches than we allocated. */
2647 net_detect->n_matches = n_matches;
2648
2649 out_report_nd:
2650 wakeup.net_detect = net_detect;
2651 out:
2652 iwl_mvm_free_nd(mvm);
2653
2654 mutex_unlock(&mvm->mutex);
2655 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
2656
2657 if (net_detect) {
2658 for (i = 0; i < net_detect->n_matches; i++)
2659 kfree(net_detect->matches[i]);
2660 kfree(net_detect);
2661 }
2662 }
2663
iwl_mvm_d3_disconnect_iter(void * data,u8 * mac,struct ieee80211_vif * vif)2664 static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac,
2665 struct ieee80211_vif *vif)
2666 {
2667 /* skip the one we keep connection on */
2668 if (data == vif)
2669 return;
2670
2671 if (vif->type == NL80211_IFTYPE_STATION)
2672 ieee80211_resume_disconnect(vif);
2673 }
2674
2675 enum rt_status {
2676 FW_ALIVE,
2677 FW_NEEDS_RESET,
2678 FW_ERROR,
2679 };
2680
iwl_mvm_check_rt_status(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2681 static enum rt_status iwl_mvm_check_rt_status(struct iwl_mvm *mvm,
2682 struct ieee80211_vif *vif)
2683 {
2684 u32 err_id;
2685
2686 /* check for lmac1 error */
2687 if (iwl_fwrt_read_err_table(mvm->trans,
2688 mvm->trans->dbg.lmac_error_event_table[0],
2689 &err_id)) {
2690 if (err_id == RF_KILL_INDICATOR_FOR_WOWLAN) {
2691 IWL_WARN(mvm, "Rfkill was toggled during suspend\n");
2692 if (vif) {
2693 struct cfg80211_wowlan_wakeup wakeup = {
2694 .rfkill_release = true,
2695 };
2696
2697 ieee80211_report_wowlan_wakeup(vif, &wakeup,
2698 GFP_KERNEL);
2699 }
2700
2701 return FW_NEEDS_RESET;
2702 }
2703 return FW_ERROR;
2704 }
2705
2706 /* check if we have lmac2 set and check for error */
2707 if (iwl_fwrt_read_err_table(mvm->trans,
2708 mvm->trans->dbg.lmac_error_event_table[1],
2709 NULL))
2710 return FW_ERROR;
2711
2712 /* check for umac error */
2713 if (iwl_fwrt_read_err_table(mvm->trans,
2714 mvm->trans->dbg.umac_error_event_table,
2715 NULL))
2716 return FW_ERROR;
2717
2718 return FW_ALIVE;
2719 }
2720
2721 /*
2722 * This function assumes:
2723 * 1. The mutex is already held.
2724 * 2. The callee functions unlock the mutex.
2725 */
2726 static bool
iwl_mvm_choose_query_wakeup_reasons(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_d3_data * d3_data)2727 iwl_mvm_choose_query_wakeup_reasons(struct iwl_mvm *mvm,
2728 struct ieee80211_vif *vif,
2729 struct iwl_d3_data *d3_data)
2730 {
2731 lockdep_assert_held(&mvm->mutex);
2732
2733 /* if FW uses status notification, status shouldn't be NULL here */
2734 if (!d3_data->status) {
2735 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2736 u8 sta_id = mvm->net_detect ? IWL_INVALID_STA :
2737 mvmvif->deflink.ap_sta_id;
2738
2739 d3_data->status = iwl_mvm_send_wowlan_get_status(mvm, sta_id);
2740 }
2741
2742 if (mvm->net_detect) {
2743 iwl_mvm_query_netdetect_reasons(mvm, vif, d3_data);
2744 return false;
2745 }
2746
2747 return iwl_mvm_query_wakeup_reasons(mvm, vif,
2748 d3_data->status);
2749 }
2750
2751 #define IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT (IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET | \
2752 IWL_WOWLAN_WAKEUP_BY_PATTERN | \
2753 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN |\
2754 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN_WILDCARD |\
2755 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN |\
2756 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN_WILDCARD)
2757
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)2758 static int iwl_mvm_wowlan_store_wake_pkt(struct iwl_mvm *mvm,
2759 struct iwl_wowlan_wake_pkt_notif *notif,
2760 struct iwl_wowlan_status_data *status,
2761 u32 len)
2762 {
2763 u32 data_size, packet_len = le32_to_cpu(notif->wake_packet_length);
2764
2765 if (len < sizeof(*notif)) {
2766 IWL_ERR(mvm, "Invalid WoWLAN wake packet notification!\n");
2767 return -EIO;
2768 }
2769
2770 if (WARN_ON(!status)) {
2771 IWL_ERR(mvm, "Got wake packet notification but wowlan status data is NULL\n");
2772 return -EIO;
2773 }
2774
2775 if (WARN_ON(!(status->wakeup_reasons &
2776 IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT))) {
2777 IWL_ERR(mvm, "Got wakeup packet but wakeup reason is %x\n",
2778 status->wakeup_reasons);
2779 return -EIO;
2780 }
2781
2782 data_size = len - offsetof(struct iwl_wowlan_wake_pkt_notif, wake_packet);
2783
2784 /* data_size got the padding from the notification, remove it. */
2785 if (packet_len < data_size)
2786 data_size = packet_len;
2787
2788 status->wake_packet = kmemdup(notif->wake_packet, data_size,
2789 GFP_ATOMIC);
2790
2791 if (!status->wake_packet)
2792 return -ENOMEM;
2793
2794 status->wake_packet_length = packet_len;
2795 status->wake_packet_bufsize = data_size;
2796
2797 return 0;
2798 }
2799
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)2800 static void iwl_mvm_nd_match_info_handler(struct iwl_mvm *mvm,
2801 struct iwl_d3_data *d3_data,
2802 struct iwl_scan_offload_match_info *notif,
2803 u32 len)
2804 {
2805 struct iwl_wowlan_status_data *status = d3_data->status;
2806 struct ieee80211_vif *vif = iwl_mvm_get_bss_vif(mvm);
2807 struct iwl_mvm_nd_results *results = d3_data->nd_results;
2808 size_t i, matches_len = sizeof(struct iwl_scan_offload_profile_match) *
2809 iwl_umac_scan_get_max_profiles(mvm->fw);
2810
2811 if (IS_ERR_OR_NULL(vif))
2812 return;
2813
2814 if (len < sizeof(struct iwl_scan_offload_match_info) + matches_len) {
2815 IWL_ERR(mvm, "Invalid scan match info notification\n");
2816 return;
2817 }
2818
2819 if (!mvm->net_detect) {
2820 IWL_ERR(mvm, "Unexpected scan match info notification\n");
2821 return;
2822 }
2823
2824 if (!status || status->wakeup_reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
2825 IWL_ERR(mvm,
2826 "Ignore scan match info notification: no reason\n");
2827 return;
2828 }
2829
2830 #ifdef CONFIG_IWLWIFI_DEBUGFS
2831 mvm->last_netdetect_scans = le32_to_cpu(notif->n_scans_done);
2832 #endif
2833
2834 results->matched_profiles = le32_to_cpu(notif->matched_profiles);
2835 IWL_INFO(mvm, "number of matched profiles=%u\n",
2836 results->matched_profiles);
2837
2838 if (results->matched_profiles) {
2839 memcpy(results->matches, notif->matches, matches_len);
2840 d3_data->nd_results_valid = true;
2841 }
2842
2843 /* no scan should be active at this point */
2844 mvm->scan_status = 0;
2845 for (i = 0; i < mvm->max_scans; i++)
2846 mvm->scan_uid_status[i] = 0;
2847 }
2848
iwl_mvm_wait_d3_notif(struct iwl_notif_wait_data * notif_wait,struct iwl_rx_packet * pkt,void * data)2849 static bool iwl_mvm_wait_d3_notif(struct iwl_notif_wait_data *notif_wait,
2850 struct iwl_rx_packet *pkt, void *data)
2851 {
2852 struct iwl_mvm *mvm =
2853 container_of(notif_wait, struct iwl_mvm, notif_wait);
2854 struct iwl_d3_data *d3_data = data;
2855 u32 len = iwl_rx_packet_payload_len(pkt);
2856 int ret;
2857 int wowlan_info_ver = iwl_fw_lookup_notif_ver(mvm->fw,
2858 PROT_OFFLOAD_GROUP,
2859 WOWLAN_INFO_NOTIFICATION,
2860 IWL_FW_CMD_VER_UNKNOWN);
2861
2862
2863 switch (WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) {
2864 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION): {
2865
2866 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_INFO) {
2867 /* We might get two notifications due to dual bss */
2868 IWL_DEBUG_WOWLAN(mvm,
2869 "Got additional wowlan info notification\n");
2870 break;
2871 }
2872
2873 if (wowlan_info_ver == 1) {
2874 struct iwl_wowlan_info_notif_v1 *notif_v1 =
2875 (void *)pkt->data;
2876
2877 iwl_mvm_parse_wowlan_info_notif_v1(mvm, notif_v1,
2878 d3_data->status,
2879 len);
2880 } else if (wowlan_info_ver == 3) {
2881 struct iwl_wowlan_info_notif_v3 *notif =
2882 (void *)pkt->data;
2883
2884 iwl_mvm_parse_wowlan_info_notif_v3(mvm, notif,
2885 d3_data->status, len);
2886 } else if (wowlan_info_ver == 5) {
2887 struct iwl_wowlan_info_notif_v5 *notif =
2888 (void *)pkt->data;
2889
2890 iwl_mvm_parse_wowlan_info_notif(mvm, notif,
2891 d3_data->status, len);
2892 } else {
2893 IWL_FW_CHECK(mvm, 1,
2894 "Firmware advertises unknown WoWLAN info notification %d!\n",
2895 wowlan_info_ver);
2896 return false;
2897 }
2898
2899 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_INFO;
2900
2901 if (d3_data->status &&
2902 d3_data->status->wakeup_reasons & IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT)
2903 /* We are supposed to get also wake packet notif */
2904 d3_data->notif_expected |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT;
2905
2906 break;
2907 }
2908 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION): {
2909 struct iwl_wowlan_wake_pkt_notif *notif = (void *)pkt->data;
2910
2911 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_WAKE_PKT) {
2912 /* We shouldn't get two wake packet notifications */
2913 IWL_ERR(mvm,
2914 "Got additional wowlan wake packet notification\n");
2915 } else {
2916 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT;
2917 len = iwl_rx_packet_payload_len(pkt);
2918 ret = iwl_mvm_wowlan_store_wake_pkt(mvm, notif,
2919 d3_data->status,
2920 len);
2921 if (ret)
2922 IWL_ERR(mvm,
2923 "Can't parse WOWLAN_WAKE_PKT_NOTIFICATION\n");
2924 }
2925
2926 break;
2927 }
2928 case WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF): {
2929 struct iwl_scan_offload_match_info *notif = (void *)pkt->data;
2930
2931 if (d3_data->notif_received & IWL_D3_ND_MATCH_INFO) {
2932 IWL_ERR(mvm,
2933 "Got additional netdetect match info\n");
2934 break;
2935 }
2936
2937 d3_data->notif_received |= IWL_D3_ND_MATCH_INFO;
2938
2939 /* explicitly set this in the 'expected' as well */
2940 d3_data->notif_expected |= IWL_D3_ND_MATCH_INFO;
2941
2942 len = iwl_rx_packet_payload_len(pkt);
2943 iwl_mvm_nd_match_info_handler(mvm, d3_data, notif, len);
2944 break;
2945 }
2946 case WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION): {
2947 struct iwl_d3_end_notif *notif = (void *)pkt->data;
2948
2949 d3_data->d3_end_flags = __le32_to_cpu(notif->flags);
2950 d3_data->notif_received |= IWL_D3_NOTIF_D3_END_NOTIF;
2951
2952 break;
2953 }
2954 default:
2955 WARN_ON(1);
2956 }
2957
2958 return d3_data->notif_received == d3_data->notif_expected;
2959 }
2960
iwl_mvm_resume_firmware(struct iwl_mvm * mvm)2961 static int iwl_mvm_resume_firmware(struct iwl_mvm *mvm)
2962 {
2963 int ret;
2964 struct iwl_host_cmd cmd = {
2965 .id = D0I3_END_CMD,
2966 .flags = CMD_WANT_SKB,
2967 };
2968 bool reset = fw_has_capa(&mvm->fw->ucode_capa,
2969 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2970
2971 ret = iwl_trans_d3_resume(mvm->trans, !reset);
2972 if (ret)
2973 return ret;
2974
2975 /*
2976 * We should trigger resume flow using command only for 22000 family
2977 * AX210 and above don't need the command since they have
2978 * the doorbell interrupt.
2979 */
2980 if (mvm->trans->mac_cfg->device_family <= IWL_DEVICE_FAMILY_22000 &&
2981 fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_D0I3_END_FIRST)) {
2982 ret = iwl_mvm_send_cmd(mvm, &cmd);
2983 if (ret < 0)
2984 IWL_ERR(mvm, "Failed to send D0I3_END_CMD first (%d)\n",
2985 ret);
2986 }
2987
2988 return ret;
2989 }
2990
2991 #define IWL_MVM_D3_NOTIF_TIMEOUT (HZ / 3)
2992
iwl_mvm_d3_notif_wait(struct iwl_mvm * mvm,struct iwl_d3_data * d3_data)2993 static int iwl_mvm_d3_notif_wait(struct iwl_mvm *mvm,
2994 struct iwl_d3_data *d3_data)
2995 {
2996 static const u16 d3_resume_notif[] = {
2997 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION),
2998 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION),
2999 WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF),
3000 WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION)
3001 };
3002 static const u16 d3_fast_resume_notif[] = {
3003 WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION)
3004 };
3005 struct iwl_notification_wait wait_d3_notif;
3006 int ret;
3007
3008 if (mvm->fast_resume)
3009 iwl_init_notification_wait(&mvm->notif_wait, &wait_d3_notif,
3010 d3_fast_resume_notif,
3011 ARRAY_SIZE(d3_fast_resume_notif),
3012 iwl_mvm_wait_d3_notif, d3_data);
3013 else
3014 iwl_init_notification_wait(&mvm->notif_wait, &wait_d3_notif,
3015 d3_resume_notif,
3016 ARRAY_SIZE(d3_resume_notif),
3017 iwl_mvm_wait_d3_notif, d3_data);
3018
3019 ret = iwl_mvm_resume_firmware(mvm);
3020 if (ret) {
3021 iwl_remove_notification(&mvm->notif_wait, &wait_d3_notif);
3022 return ret;
3023 }
3024
3025 return iwl_wait_notification(&mvm->notif_wait, &wait_d3_notif,
3026 IWL_MVM_D3_NOTIF_TIMEOUT);
3027 }
3028
iwl_mvm_d3_resume_notif_based(struct iwl_mvm * mvm)3029 static inline bool iwl_mvm_d3_resume_notif_based(struct iwl_mvm *mvm)
3030 {
3031 return iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
3032 WOWLAN_INFO_NOTIFICATION, 0) &&
3033 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
3034 WOWLAN_WAKE_PKT_NOTIFICATION, 0) &&
3035 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
3036 D3_END_NOTIFICATION, 0);
3037 }
3038
__iwl_mvm_resume(struct iwl_mvm * mvm)3039 static int __iwl_mvm_resume(struct iwl_mvm *mvm)
3040 {
3041 struct ieee80211_vif *vif = NULL;
3042 int ret = 1;
3043 struct iwl_mvm_nd_results results = {};
3044 struct iwl_d3_data d3_data = {
3045 .notif_expected =
3046 IWL_D3_NOTIF_WOWLAN_INFO |
3047 IWL_D3_NOTIF_D3_END_NOTIF,
3048 .nd_results_valid = false,
3049 .nd_results = &results,
3050 };
3051 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
3052 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
3053 bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa,
3054 IWL_UCODE_TLV_CAPA_D0I3_END_FIRST);
3055 bool resume_notif_based = iwl_mvm_d3_resume_notif_based(mvm);
3056 enum rt_status rt_status;
3057 bool keep = false;
3058
3059 mutex_lock(&mvm->mutex);
3060
3061 /* Apparently, the device went away and device_powered_off() was called,
3062 * don't even try to read the rt_status, the device is currently
3063 * inaccessible.
3064 */
3065 if (!test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) {
3066 IWL_INFO(mvm,
3067 "Can't resume, device_powered_off() was called during wowlan\n");
3068 goto err;
3069 }
3070
3071 mvm->last_reset_or_resume_time_jiffies = jiffies;
3072
3073 /* get the BSS vif pointer again */
3074 vif = iwl_mvm_get_bss_vif(mvm);
3075 if (IS_ERR_OR_NULL(vif))
3076 goto err;
3077
3078 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
3079
3080 rt_status = iwl_mvm_check_rt_status(mvm, vif);
3081 if (rt_status != FW_ALIVE) {
3082 iwl_trans_notify_fw_error(mvm->trans);
3083 if (rt_status == FW_ERROR) {
3084 IWL_ERR(mvm, "FW Error occurred during suspend. Restarting.\n");
3085 iwl_mvm_dump_nic_error_log(mvm);
3086 iwl_dbg_tlv_time_point(&mvm->fwrt,
3087 IWL_FW_INI_TIME_POINT_FW_ASSERT,
3088 NULL);
3089 iwl_fw_dbg_collect_desc(&mvm->fwrt,
3090 &iwl_dump_desc_assert,
3091 false, 0);
3092 }
3093 ret = 1;
3094 goto err;
3095 }
3096
3097 if (resume_notif_based) {
3098 d3_data.status = kzalloc_obj(*d3_data.status);
3099 if (!d3_data.status) {
3100 IWL_ERR(mvm, "Failed to allocate wowlan status\n");
3101 ret = -ENOMEM;
3102 goto err;
3103 }
3104
3105 ret = iwl_mvm_d3_notif_wait(mvm, &d3_data);
3106 if (ret)
3107 goto err;
3108 } else {
3109 ret = iwl_mvm_resume_firmware(mvm);
3110 if (ret < 0)
3111 goto err;
3112 }
3113
3114 /* when reset is required we can't send these following commands */
3115 if (d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)
3116 goto query_wakeup_reasons;
3117
3118 /*
3119 * Query the current location and source from the D3 firmware so we
3120 * can play it back when we re-intiailize the D0 firmware
3121 */
3122 iwl_mvm_update_changed_regdom(mvm);
3123
3124 /* Re-configure PPAG settings */
3125 iwl_mvm_ppag_send_cmd(mvm);
3126
3127 if (!unified_image)
3128 /* Re-configure default SAR profile */
3129 iwl_mvm_sar_select_profile(mvm, 1, 1);
3130
3131 if (mvm->net_detect && unified_image) {
3132 /* If this is a non-unified image, we restart the FW,
3133 * so no need to stop the netdetect scan. If that
3134 * fails, continue and try to get the wake-up reasons,
3135 * but trigger a HW restart by keeping a failure code
3136 * in ret.
3137 */
3138 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT,
3139 false);
3140 }
3141
3142 query_wakeup_reasons:
3143 keep = iwl_mvm_choose_query_wakeup_reasons(mvm, vif, &d3_data);
3144 /* has unlocked the mutex, so skip that */
3145 goto out;
3146
3147 err:
3148 mutex_unlock(&mvm->mutex);
3149 out:
3150 if (d3_data.status)
3151 kfree(d3_data.status->wake_packet);
3152 kfree(d3_data.status);
3153 iwl_mvm_free_nd(mvm);
3154
3155 if (!mvm->net_detect)
3156 ieee80211_iterate_active_interfaces_mtx(mvm->hw,
3157 IEEE80211_IFACE_ITER_NORMAL,
3158 iwl_mvm_d3_disconnect_iter,
3159 keep ? vif : NULL);
3160
3161 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
3162
3163 /* no need to reset the device in unified images, if successful */
3164 if (unified_image && !ret) {
3165 /* nothing else to do if we already sent D0I3_END_CMD */
3166 if (d0i3_first)
3167 return 0;
3168
3169 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
3170 D3_END_NOTIFICATION, 0)) {
3171 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL);
3172 if (!ret)
3173 return 0;
3174 } else if (!(d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)) {
3175 return 0;
3176 }
3177 }
3178
3179 /*
3180 * Reconfigure the device in one of the following cases:
3181 * 1. We are not using a unified image
3182 * 2. We are using a unified image but had an error while exiting D3
3183 */
3184 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
3185
3186 return 1;
3187 }
3188
iwl_mvm_resume(struct ieee80211_hw * hw)3189 int iwl_mvm_resume(struct ieee80211_hw *hw)
3190 {
3191 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3192 int ret;
3193
3194 ret = __iwl_mvm_resume(mvm);
3195
3196 iwl_mvm_resume_tcm(mvm);
3197
3198 iwl_fw_runtime_resume(&mvm->fwrt);
3199
3200 return ret;
3201 }
3202
iwl_mvm_set_wakeup(struct ieee80211_hw * hw,bool enabled)3203 void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled)
3204 {
3205 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3206
3207 device_set_wakeup_enable(mvm->trans->dev, enabled);
3208 }
3209
iwl_mvm_fast_suspend(struct iwl_mvm * mvm)3210 void iwl_mvm_fast_suspend(struct iwl_mvm *mvm)
3211 {
3212 struct iwl_d3_manager_config d3_cfg_cmd_data = {};
3213 int ret;
3214
3215 lockdep_assert_held(&mvm->mutex);
3216
3217 IWL_DEBUG_WOWLAN(mvm, "Starting fast suspend flow\n");
3218
3219 iwl_mvm_pause_tcm(mvm, true);
3220
3221 mvm->fast_resume = true;
3222 set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
3223
3224 WARN_ON(iwl_mvm_power_update_device(mvm));
3225 ret = iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD, 0,
3226 sizeof(d3_cfg_cmd_data), &d3_cfg_cmd_data);
3227 if (ret)
3228 IWL_ERR(mvm,
3229 "fast suspend: couldn't send D3_CONFIG_CMD %d\n", ret);
3230
3231 ret = iwl_trans_d3_suspend(mvm->trans, false);
3232 if (ret)
3233 IWL_ERR(mvm, "fast suspend: trans_d3_suspend failed %d\n", ret);
3234 }
3235
iwl_mvm_fast_resume(struct iwl_mvm * mvm)3236 int iwl_mvm_fast_resume(struct iwl_mvm *mvm)
3237 {
3238 struct iwl_d3_data d3_data = {
3239 .notif_expected =
3240 IWL_D3_NOTIF_D3_END_NOTIF,
3241 };
3242 enum rt_status rt_status;
3243 int ret;
3244
3245 lockdep_assert_held(&mvm->mutex);
3246
3247 IWL_DEBUG_WOWLAN(mvm, "Starting the fast resume flow\n");
3248
3249 mvm->last_reset_or_resume_time_jiffies = jiffies;
3250 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
3251
3252 rt_status = iwl_mvm_check_rt_status(mvm, NULL);
3253 if (rt_status != FW_ALIVE) {
3254 iwl_trans_notify_fw_error(mvm->trans);
3255 if (rt_status == FW_ERROR) {
3256 IWL_ERR(mvm,
3257 "iwl_mvm_check_rt_status failed, device is gone during suspend\n");
3258 iwl_mvm_dump_nic_error_log(mvm);
3259 iwl_dbg_tlv_time_point(&mvm->fwrt,
3260 IWL_FW_INI_TIME_POINT_FW_ASSERT,
3261 NULL);
3262 iwl_fw_dbg_collect_desc(&mvm->fwrt,
3263 &iwl_dump_desc_assert,
3264 false, 0);
3265 }
3266 ret = -ENODEV;
3267
3268 goto out;
3269 }
3270 ret = iwl_mvm_d3_notif_wait(mvm, &d3_data);
3271
3272 if (ret) {
3273 IWL_ERR(mvm, "Couldn't get the d3 notif %d\n", ret);
3274 mvm->trans->state = IWL_TRANS_NO_FW;
3275 }
3276
3277 iwl_mvm_resume_tcm(mvm);
3278
3279 out:
3280 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
3281 mvm->fast_resume = false;
3282
3283 return ret;
3284 }
3285