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1// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2/*
3 * Copyright (C) 2012-2014, 2018-2022 Intel Corporation
4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
5 * Copyright (C) 2016-2017 Intel Deutschland GmbH
6 */
7#include <linux/etherdevice.h>
8#include <linux/ip.h>
9#include <linux/fs.h>
10#include <net/cfg80211.h>
11#include <net/ipv6.h>
12#include <net/tcp.h>
13#include <net/addrconf.h>
14#include "iwl-modparams.h"
15#include "fw-api.h"
16#include "mvm.h"
17#include "fw/img.h"
18
19void iwl_mvm_set_rekey_data(struct ieee80211_hw *hw,
20 struct ieee80211_vif *vif,
21 struct cfg80211_gtk_rekey_data *data)
22{
23 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
24 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
25
26 mutex_lock(&mvm->mutex);
27
28 mvmvif->rekey_data.kek_len = data->kek_len;
29 mvmvif->rekey_data.kck_len = data->kck_len;
30 memcpy(mvmvif->rekey_data.kek, data->kek, data->kek_len);
31 memcpy(mvmvif->rekey_data.kck, data->kck, data->kck_len);
32 mvmvif->rekey_data.akm = data->akm & 0xFF;
33 mvmvif->rekey_data.replay_ctr =
34 cpu_to_le64(be64_to_cpup((const __be64 *)data->replay_ctr));
35 mvmvif->rekey_data.valid = true;
36
37 mutex_unlock(&mvm->mutex);
38}
39
40#if IS_ENABLED(CONFIG_IPV6)
41void iwl_mvm_ipv6_addr_change(struct ieee80211_hw *hw,
42 struct ieee80211_vif *vif,
43 struct inet6_dev *idev)
44{
45 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
46 struct inet6_ifaddr *ifa;
47 int idx = 0;
48
49 memset(mvmvif->tentative_addrs, 0, sizeof(mvmvif->tentative_addrs));
50
51 read_lock_bh(&idev->lock);
52 list_for_each_entry(ifa, &idev->addr_list, if_list) {
53 mvmvif->target_ipv6_addrs[idx] = ifa->addr;
54 if (ifa->flags & IFA_F_TENTATIVE)
55 __set_bit(idx, mvmvif->tentative_addrs);
56 idx++;
57 if (idx >= IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_MAX)
58 break;
59 }
60 read_unlock_bh(&idev->lock);
61
62 mvmvif->num_target_ipv6_addrs = idx;
63}
64#endif
65
66void iwl_mvm_set_default_unicast_key(struct ieee80211_hw *hw,
67 struct ieee80211_vif *vif, int idx)
68{
69 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
70
71 mvmvif->tx_key_idx = idx;
72}
73
74static void iwl_mvm_convert_p1k(u16 *p1k, __le16 *out)
75{
76 int i;
77
78 for (i = 0; i < IWL_P1K_SIZE; i++)
79 out[i] = cpu_to_le16(p1k[i]);
80}
81
82static const u8 *iwl_mvm_find_max_pn(struct ieee80211_key_conf *key,
83 struct iwl_mvm_key_pn *ptk_pn,
84 struct ieee80211_key_seq *seq,
85 int tid, int queues)
86{
87 const u8 *ret = seq->ccmp.pn;
88 int i;
89
90 /* get the PN from mac80211, used on the default queue */
91 ieee80211_get_key_rx_seq(key, tid, seq);
92
93 /* and use the internal data for the other queues */
94 for (i = 1; i < queues; i++) {
95 const u8 *tmp = ptk_pn->q[i].pn[tid];
96
97 if (memcmp(ret, tmp, IEEE80211_CCMP_PN_LEN) <= 0)
98 ret = tmp;
99 }
100
101 return ret;
102}
103
104struct wowlan_key_reprogram_data {
105 bool error;
106 int wep_key_idx;
107};
108
109static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw,
110 struct ieee80211_vif *vif,
111 struct ieee80211_sta *sta,
112 struct ieee80211_key_conf *key,
113 void *_data)
114{
115 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
116 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
117 struct wowlan_key_reprogram_data *data = _data;
118 int ret;
119
120 switch (key->cipher) {
121 case WLAN_CIPHER_SUITE_WEP40:
122 case WLAN_CIPHER_SUITE_WEP104: { /* hack it for now */
123 struct {
124 struct iwl_mvm_wep_key_cmd wep_key_cmd;
125 struct iwl_mvm_wep_key wep_key;
126 } __packed wkc = {
127 .wep_key_cmd.mac_id_n_color =
128 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
129 mvmvif->color)),
130 .wep_key_cmd.num_keys = 1,
131 /* firmware sets STA_KEY_FLG_WEP_13BYTES */
132 .wep_key_cmd.decryption_type = STA_KEY_FLG_WEP,
133 .wep_key.key_index = key->keyidx,
134 .wep_key.key_size = key->keylen,
135 };
136
137 /*
138 * This will fail -- the key functions don't set support
139 * pairwise WEP keys. However, that's better than silently
140 * failing WoWLAN. Or maybe not?
141 */
142 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
143 break;
144
145 memcpy(&wkc.wep_key.key[3], key->key, key->keylen);
146 if (key->keyidx == mvmvif->tx_key_idx) {
147 /* TX key must be at offset 0 */
148 wkc.wep_key.key_offset = 0;
149 } else {
150 /* others start at 1 */
151 data->wep_key_idx++;
152 wkc.wep_key.key_offset = data->wep_key_idx;
153 }
154
155 mutex_lock(&mvm->mutex);
156 ret = iwl_mvm_send_cmd_pdu(mvm, WEP_KEY, 0, sizeof(wkc), &wkc);
157 data->error = ret != 0;
158
159 mvm->ptk_ivlen = key->iv_len;
160 mvm->ptk_icvlen = key->icv_len;
161 mvm->gtk_ivlen = key->iv_len;
162 mvm->gtk_icvlen = key->icv_len;
163 mutex_unlock(&mvm->mutex);
164
165 /* don't upload key again */
166 return;
167 }
168 default:
169 data->error = true;
170 return;
171 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
172 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
173 return;
174 case WLAN_CIPHER_SUITE_AES_CMAC:
175 /*
176 * Ignore CMAC keys -- the WoWLAN firmware doesn't support them
177 * but we also shouldn't abort suspend due to that. It does have
178 * support for the IGTK key renewal, but doesn't really use the
179 * IGTK for anything. This means we could spuriously wake up or
180 * be deauthenticated, but that was considered acceptable.
181 */
182 return;
183 case WLAN_CIPHER_SUITE_TKIP:
184 case WLAN_CIPHER_SUITE_CCMP:
185 case WLAN_CIPHER_SUITE_GCMP:
186 case WLAN_CIPHER_SUITE_GCMP_256:
187 break;
188 }
189
190 mutex_lock(&mvm->mutex);
191 /*
192 * The D3 firmware hardcodes the key offset 0 as the key it
193 * uses to transmit packets to the AP, i.e. the PTK.
194 */
195 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
196 mvm->ptk_ivlen = key->iv_len;
197 mvm->ptk_icvlen = key->icv_len;
198 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 0);
199 } else {
200 /*
201 * firmware only supports TSC/RSC for a single key,
202 * so if there are multiple keep overwriting them
203 * with new ones -- this relies on mac80211 doing
204 * list_add_tail().
205 */
206 mvm->gtk_ivlen = key->iv_len;
207 mvm->gtk_icvlen = key->icv_len;
208 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 1);
209 }
210 mutex_unlock(&mvm->mutex);
211 data->error = ret != 0;
212}
213
214struct wowlan_key_rsc_tsc_data {
215 struct iwl_wowlan_rsc_tsc_params_cmd_v4 *rsc_tsc;
216 bool have_rsc_tsc;
217};
218
219static void iwl_mvm_wowlan_get_rsc_tsc_data(struct ieee80211_hw *hw,
220 struct ieee80211_vif *vif,
221 struct ieee80211_sta *sta,
222 struct ieee80211_key_conf *key,
223 void *_data)
224{
225 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
226 struct wowlan_key_rsc_tsc_data *data = _data;
227 struct aes_sc *aes_sc;
228 struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
229 struct ieee80211_key_seq seq;
230 int i;
231
232 switch (key->cipher) {
233 default:
234 break;
235 case WLAN_CIPHER_SUITE_TKIP:
236 if (sta) {
237 u64 pn64;
238
239 tkip_sc =
240 data->rsc_tsc->params.all_tsc_rsc.tkip.unicast_rsc;
241 tkip_tx_sc =
242 &data->rsc_tsc->params.all_tsc_rsc.tkip.tsc;
243
244 pn64 = atomic64_read(&key->tx_pn);
245 tkip_tx_sc->iv16 = cpu_to_le16(TKIP_PN_TO_IV16(pn64));
246 tkip_tx_sc->iv32 = cpu_to_le32(TKIP_PN_TO_IV32(pn64));
247 } else {
248 tkip_sc =
249 data->rsc_tsc->params.all_tsc_rsc.tkip.multicast_rsc;
250 }
251
252 /*
253 * For non-QoS this relies on the fact that both the uCode and
254 * mac80211 use TID 0 (as they need to to avoid replay attacks)
255 * for checking the IV in the frames.
256 */
257 for (i = 0; i < IWL_NUM_RSC; i++) {
258 ieee80211_get_key_rx_seq(key, i, &seq);
259 tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
260 tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
261 }
262
263 data->have_rsc_tsc = true;
264 break;
265 case WLAN_CIPHER_SUITE_CCMP:
266 case WLAN_CIPHER_SUITE_GCMP:
267 case WLAN_CIPHER_SUITE_GCMP_256:
268 if (sta) {
269 struct aes_sc *aes_tx_sc;
270 u64 pn64;
271
272 aes_sc =
273 data->rsc_tsc->params.all_tsc_rsc.aes.unicast_rsc;
274 aes_tx_sc =
275 &data->rsc_tsc->params.all_tsc_rsc.aes.tsc;
276
277 pn64 = atomic64_read(&key->tx_pn);
278 aes_tx_sc->pn = cpu_to_le64(pn64);
279 } else {
280 aes_sc =
281 data->rsc_tsc->params.all_tsc_rsc.aes.multicast_rsc;
282 }
283
284 /*
285 * For non-QoS this relies on the fact that both the uCode and
286 * mac80211/our RX code use TID 0 for checking the PN.
287 */
288 if (sta && iwl_mvm_has_new_rx_api(mvm)) {
289 struct iwl_mvm_sta *mvmsta;
290 struct iwl_mvm_key_pn *ptk_pn;
291 const u8 *pn;
292
293 mvmsta = iwl_mvm_sta_from_mac80211(sta);
294 rcu_read_lock();
295 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]);
296 if (WARN_ON(!ptk_pn)) {
297 rcu_read_unlock();
298 break;
299 }
300
301 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
302 pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i,
303 mvm->trans->num_rx_queues);
304 aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
305 ((u64)pn[4] << 8) |
306 ((u64)pn[3] << 16) |
307 ((u64)pn[2] << 24) |
308 ((u64)pn[1] << 32) |
309 ((u64)pn[0] << 40));
310 }
311
312 rcu_read_unlock();
313 } else {
314 for (i = 0; i < IWL_NUM_RSC; i++) {
315 u8 *pn = seq.ccmp.pn;
316
317 ieee80211_get_key_rx_seq(key, i, &seq);
318 aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
319 ((u64)pn[4] << 8) |
320 ((u64)pn[3] << 16) |
321 ((u64)pn[2] << 24) |
322 ((u64)pn[1] << 32) |
323 ((u64)pn[0] << 40));
324 }
325 }
326 data->have_rsc_tsc = true;
327 break;
328 }
329}
330
331struct wowlan_key_rsc_v5_data {
332 struct iwl_wowlan_rsc_tsc_params_cmd *rsc;
333 bool have_rsc;
334 int gtks;
335 int gtk_ids[4];
336};
337
338static void iwl_mvm_wowlan_get_rsc_v5_data(struct ieee80211_hw *hw,
339 struct ieee80211_vif *vif,
340 struct ieee80211_sta *sta,
341 struct ieee80211_key_conf *key,
342 void *_data)
343{
344 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
345 struct wowlan_key_rsc_v5_data *data = _data;
346 struct ieee80211_key_seq seq;
347 __le64 *rsc;
348 int i;
349
350 /* only for ciphers that can be PTK/GTK */
351 switch (key->cipher) {
352 default:
353 return;
354 case WLAN_CIPHER_SUITE_TKIP:
355 case WLAN_CIPHER_SUITE_CCMP:
356 case WLAN_CIPHER_SUITE_GCMP:
357 case WLAN_CIPHER_SUITE_GCMP_256:
358 break;
359 }
360
361 if (sta) {
362 rsc = data->rsc->ucast_rsc;
363 } else {
364 if (WARN_ON(data->gtks >= ARRAY_SIZE(data->gtk_ids)))
365 return;
366 data->gtk_ids[data->gtks] = key->keyidx;
367 rsc = data->rsc->mcast_rsc[data->gtks % 2];
368 if (WARN_ON(key->keyidx >=
369 ARRAY_SIZE(data->rsc->mcast_key_id_map)))
370 return;
371 data->rsc->mcast_key_id_map[key->keyidx] = data->gtks % 2;
372 if (data->gtks >= 2) {
373 int prev = data->gtks - 2;
374 int prev_idx = data->gtk_ids[prev];
375
376 data->rsc->mcast_key_id_map[prev_idx] =
377 IWL_MCAST_KEY_MAP_INVALID;
378 }
379 data->gtks++;
380 }
381
382 switch (key->cipher) {
383 default:
384 WARN_ON(1);
385 break;
386 case WLAN_CIPHER_SUITE_TKIP:
387
388 /*
389 * For non-QoS this relies on the fact that both the uCode and
390 * mac80211 use TID 0 (as they need to to avoid replay attacks)
391 * for checking the IV in the frames.
392 */
393 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
394 ieee80211_get_key_rx_seq(key, i, &seq);
395
396 rsc[i] = cpu_to_le64(((u64)seq.tkip.iv32 << 16) |
397 seq.tkip.iv16);
398 }
399
400 data->have_rsc = true;
401 break;
402 case WLAN_CIPHER_SUITE_CCMP:
403 case WLAN_CIPHER_SUITE_GCMP:
404 case WLAN_CIPHER_SUITE_GCMP_256:
405 /*
406 * For non-QoS this relies on the fact that both the uCode and
407 * mac80211/our RX code use TID 0 for checking the PN.
408 */
409 if (sta) {
410 struct iwl_mvm_sta *mvmsta;
411 struct iwl_mvm_key_pn *ptk_pn;
412 const u8 *pn;
413
414 mvmsta = iwl_mvm_sta_from_mac80211(sta);
415 rcu_read_lock();
416 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]);
417 if (WARN_ON(!ptk_pn)) {
418 rcu_read_unlock();
419 break;
420 }
421
422 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
423 pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i,
424 mvm->trans->num_rx_queues);
425 rsc[i] = cpu_to_le64((u64)pn[5] |
426 ((u64)pn[4] << 8) |
427 ((u64)pn[3] << 16) |
428 ((u64)pn[2] << 24) |
429 ((u64)pn[1] << 32) |
430 ((u64)pn[0] << 40));
431 }
432
433 rcu_read_unlock();
434 } else {
435 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
436 u8 *pn = seq.ccmp.pn;
437
438 ieee80211_get_key_rx_seq(key, i, &seq);
439 rsc[i] = cpu_to_le64((u64)pn[5] |
440 ((u64)pn[4] << 8) |
441 ((u64)pn[3] << 16) |
442 ((u64)pn[2] << 24) |
443 ((u64)pn[1] << 32) |
444 ((u64)pn[0] << 40));
445 }
446 }
447 data->have_rsc = true;
448 break;
449 }
450}
451
452static int iwl_mvm_wowlan_config_rsc_tsc(struct iwl_mvm *mvm,
453 struct ieee80211_vif *vif)
454{
455 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
456 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TSC_RSC_PARAM,
457 IWL_FW_CMD_VER_UNKNOWN);
458 int ret;
459
460 if (ver == 5) {
461 struct wowlan_key_rsc_v5_data data = {};
462 int i;
463
464 data.rsc = kmalloc(sizeof(*data.rsc), GFP_KERNEL);
465 if (!data.rsc)
466 return -ENOMEM;
467
468 memset(data.rsc, 0xff, sizeof(*data.rsc));
469
470 for (i = 0; i < ARRAY_SIZE(data.rsc->mcast_key_id_map); i++)
471 data.rsc->mcast_key_id_map[i] =
472 IWL_MCAST_KEY_MAP_INVALID;
473 data.rsc->sta_id = cpu_to_le32(mvmvif->ap_sta_id);
474
475 ieee80211_iter_keys(mvm->hw, vif,
476 iwl_mvm_wowlan_get_rsc_v5_data,
477 &data);
478
479 if (data.have_rsc)
480 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM,
481 CMD_ASYNC, sizeof(*data.rsc),
482 data.rsc);
483 else
484 ret = 0;
485 kfree(data.rsc);
486 } else if (ver == 4 || ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN) {
487 struct wowlan_key_rsc_tsc_data data = {};
488 int size;
489
490 data.rsc_tsc = kzalloc(sizeof(*data.rsc_tsc), GFP_KERNEL);
491 if (!data.rsc_tsc)
492 return -ENOMEM;
493
494 if (ver == 4) {
495 size = sizeof(*data.rsc_tsc);
496 data.rsc_tsc->sta_id = cpu_to_le32(mvmvif->ap_sta_id);
497 } else {
498 /* ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN */
499 size = sizeof(data.rsc_tsc->params);
500 }
501
502 ieee80211_iter_keys(mvm->hw, vif,
503 iwl_mvm_wowlan_get_rsc_tsc_data,
504 &data);
505
506 if (data.have_rsc_tsc)
507 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM,
508 CMD_ASYNC, size,
509 data.rsc_tsc);
510 else
511 ret = 0;
512 kfree(data.rsc_tsc);
513 } else {
514 ret = 0;
515 WARN_ON_ONCE(1);
516 }
517
518 return ret;
519}
520
521struct wowlan_key_tkip_data {
522 struct iwl_wowlan_tkip_params_cmd tkip;
523 bool have_tkip_keys;
524};
525
526static void iwl_mvm_wowlan_get_tkip_data(struct ieee80211_hw *hw,
527 struct ieee80211_vif *vif,
528 struct ieee80211_sta *sta,
529 struct ieee80211_key_conf *key,
530 void *_data)
531{
532 struct wowlan_key_tkip_data *data = _data;
533 struct iwl_p1k_cache *rx_p1ks;
534 u8 *rx_mic_key;
535 struct ieee80211_key_seq seq;
536 u32 cur_rx_iv32 = 0;
537 u16 p1k[IWL_P1K_SIZE];
538 int i;
539
540 switch (key->cipher) {
541 default:
542 break;
543 case WLAN_CIPHER_SUITE_TKIP:
544 if (sta) {
545 u64 pn64;
546
547 rx_p1ks = data->tkip.rx_uni;
548
549 pn64 = atomic64_read(&key->tx_pn);
550
551 ieee80211_get_tkip_p1k_iv(key, TKIP_PN_TO_IV32(pn64),
552 p1k);
553 iwl_mvm_convert_p1k(p1k, data->tkip.tx.p1k);
554
555 memcpy(data->tkip.mic_keys.tx,
556 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
557 IWL_MIC_KEY_SIZE);
558
559 rx_mic_key = data->tkip.mic_keys.rx_unicast;
560 } else {
561 rx_p1ks = data->tkip.rx_multi;
562 rx_mic_key = data->tkip.mic_keys.rx_mcast;
563 }
564
565 for (i = 0; i < IWL_NUM_RSC; i++) {
566 /* wrapping isn't allowed, AP must rekey */
567 if (seq.tkip.iv32 > cur_rx_iv32)
568 cur_rx_iv32 = seq.tkip.iv32;
569 }
570
571 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
572 cur_rx_iv32, p1k);
573 iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k);
574 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
575 cur_rx_iv32 + 1, p1k);
576 iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k);
577
578 memcpy(rx_mic_key,
579 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
580 IWL_MIC_KEY_SIZE);
581
582 data->have_tkip_keys = true;
583 break;
584 }
585}
586
587struct wowlan_key_gtk_type_iter {
588 struct iwl_wowlan_kek_kck_material_cmd_v4 *kek_kck_cmd;
589};
590
591static void iwl_mvm_wowlan_gtk_type_iter(struct ieee80211_hw *hw,
592 struct ieee80211_vif *vif,
593 struct ieee80211_sta *sta,
594 struct ieee80211_key_conf *key,
595 void *_data)
596{
597 struct wowlan_key_gtk_type_iter *data = _data;
598
599 switch (key->cipher) {
600 default:
601 return;
602 case WLAN_CIPHER_SUITE_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 data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_GCMP);
610 return;
611 case WLAN_CIPHER_SUITE_AES_CMAC:
612 data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_CCM);
613 return;
614 case WLAN_CIPHER_SUITE_CCMP:
615 if (!sta)
616 data->kek_kck_cmd->gtk_cipher =
617 cpu_to_le32(STA_KEY_FLG_CCM);
618 return;
619 case WLAN_CIPHER_SUITE_GCMP:
620 case WLAN_CIPHER_SUITE_GCMP_256:
621 if (!sta)
622 data->kek_kck_cmd->gtk_cipher =
623 cpu_to_le32(STA_KEY_FLG_GCMP);
624 return;
625 }
626}
627
628static int iwl_mvm_send_patterns_v1(struct iwl_mvm *mvm,
629 struct cfg80211_wowlan *wowlan)
630{
631 struct iwl_wowlan_patterns_cmd_v1 *pattern_cmd;
632 struct iwl_host_cmd cmd = {
633 .id = WOWLAN_PATTERNS,
634 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
635 };
636 int i, err;
637
638 if (!wowlan->n_patterns)
639 return 0;
640
641 cmd.len[0] = struct_size(pattern_cmd, patterns, wowlan->n_patterns);
642
643 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
644 if (!pattern_cmd)
645 return -ENOMEM;
646
647 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
648
649 for (i = 0; i < wowlan->n_patterns; i++) {
650 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
651
652 memcpy(&pattern_cmd->patterns[i].mask,
653 wowlan->patterns[i].mask, mask_len);
654 memcpy(&pattern_cmd->patterns[i].pattern,
655 wowlan->patterns[i].pattern,
656 wowlan->patterns[i].pattern_len);
657 pattern_cmd->patterns[i].mask_size = mask_len;
658 pattern_cmd->patterns[i].pattern_size =
659 wowlan->patterns[i].pattern_len;
660 }
661
662 cmd.data[0] = pattern_cmd;
663 err = iwl_mvm_send_cmd(mvm, &cmd);
664 kfree(pattern_cmd);
665 return err;
666}
667
668static int iwl_mvm_send_patterns(struct iwl_mvm *mvm,
669 struct ieee80211_vif *vif,
670 struct cfg80211_wowlan *wowlan)
671{
672 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
673 struct iwl_wowlan_patterns_cmd *pattern_cmd;
674 struct iwl_host_cmd cmd = {
675 .id = WOWLAN_PATTERNS,
676 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
677 };
678 int i, err;
679 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id,
680 IWL_FW_CMD_VER_UNKNOWN);
681
682 if (!wowlan->n_patterns)
683 return 0;
684
685 cmd.len[0] = sizeof(*pattern_cmd) +
686 wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern_v2);
687
688 pattern_cmd = kzalloc(cmd.len[0], GFP_KERNEL);
689 if (!pattern_cmd)
690 return -ENOMEM;
691
692 pattern_cmd->n_patterns = wowlan->n_patterns;
693 if (ver >= 3)
694 pattern_cmd->sta_id = mvmvif->ap_sta_id;
695
696 for (i = 0; i < wowlan->n_patterns; i++) {
697 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
698
699 pattern_cmd->patterns[i].pattern_type =
700 WOWLAN_PATTERN_TYPE_BITMASK;
701
702 memcpy(&pattern_cmd->patterns[i].u.bitmask.mask,
703 wowlan->patterns[i].mask, mask_len);
704 memcpy(&pattern_cmd->patterns[i].u.bitmask.pattern,
705 wowlan->patterns[i].pattern,
706 wowlan->patterns[i].pattern_len);
707 pattern_cmd->patterns[i].u.bitmask.mask_size = mask_len;
708 pattern_cmd->patterns[i].u.bitmask.pattern_size =
709 wowlan->patterns[i].pattern_len;
710 }
711
712 cmd.data[0] = pattern_cmd;
713 err = iwl_mvm_send_cmd(mvm, &cmd);
714 kfree(pattern_cmd);
715 return err;
716}
717
718static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
719 struct ieee80211_sta *ap_sta)
720{
721 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
722 struct ieee80211_chanctx_conf *ctx;
723 u8 chains_static, chains_dynamic;
724 struct cfg80211_chan_def chandef;
725 int ret, i;
726 struct iwl_binding_cmd_v1 binding_cmd = {};
727 struct iwl_time_quota_cmd quota_cmd = {};
728 struct iwl_time_quota_data *quota;
729 u32 status;
730
731 if (WARN_ON_ONCE(iwl_mvm_is_cdb_supported(mvm)))
732 return -EINVAL;
733
734 /* add back the PHY */
735 if (WARN_ON(!mvmvif->phy_ctxt))
736 return -EINVAL;
737
738 rcu_read_lock();
739 ctx = rcu_dereference(vif->bss_conf.chanctx_conf);
740 if (WARN_ON(!ctx)) {
741 rcu_read_unlock();
742 return -EINVAL;
743 }
744 chandef = ctx->def;
745 chains_static = ctx->rx_chains_static;
746 chains_dynamic = ctx->rx_chains_dynamic;
747 rcu_read_unlock();
748
749 ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt, &chandef,
750 chains_static, chains_dynamic);
751 if (ret)
752 return ret;
753
754 /* add back the MAC */
755 mvmvif->uploaded = false;
756
757 if (WARN_ON(!vif->cfg.assoc))
758 return -EINVAL;
759
760 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
761 if (ret)
762 return ret;
763
764 /* add back binding - XXX refactor? */
765 binding_cmd.id_and_color =
766 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
767 mvmvif->phy_ctxt->color));
768 binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD);
769 binding_cmd.phy =
770 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
771 mvmvif->phy_ctxt->color));
772 binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
773 mvmvif->color));
774 for (i = 1; i < MAX_MACS_IN_BINDING; i++)
775 binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID);
776
777 status = 0;
778 ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD,
779 IWL_BINDING_CMD_SIZE_V1, &binding_cmd,
780 &status);
781 if (ret) {
782 IWL_ERR(mvm, "Failed to add binding: %d\n", ret);
783 return ret;
784 }
785
786 if (status) {
787 IWL_ERR(mvm, "Binding command failed: %u\n", status);
788 return -EIO;
789 }
790
791 ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false, 0);
792 if (ret)
793 return ret;
794 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], ap_sta);
795
796 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
797 if (ret)
798 return ret;
799
800 /* and some quota */
801 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, 0);
802 quota->id_and_color =
803 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
804 mvmvif->phy_ctxt->color));
805 quota->quota = cpu_to_le32(IWL_MVM_MAX_QUOTA);
806 quota->max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA);
807
808 for (i = 1; i < MAX_BINDINGS; i++) {
809 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, i);
810 quota->id_and_color = cpu_to_le32(FW_CTXT_INVALID);
811 }
812
813 ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0,
814 iwl_mvm_quota_cmd_size(mvm), "a_cmd);
815 if (ret)
816 IWL_ERR(mvm, "Failed to send quota: %d\n", ret);
817
818 if (iwl_mvm_is_lar_supported(mvm) && iwl_mvm_init_fw_regd(mvm))
819 IWL_ERR(mvm, "Failed to initialize D3 LAR information\n");
820
821 return 0;
822}
823
824static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm,
825 struct ieee80211_vif *vif)
826{
827 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
828 struct iwl_nonqos_seq_query_cmd query_cmd = {
829 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET),
830 .mac_id_n_color =
831 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
832 mvmvif->color)),
833 };
834 struct iwl_host_cmd cmd = {
835 .id = NON_QOS_TX_COUNTER_CMD,
836 .flags = CMD_WANT_SKB,
837 };
838 int err;
839 u32 size;
840
841 cmd.data[0] = &query_cmd;
842 cmd.len[0] = sizeof(query_cmd);
843
844 err = iwl_mvm_send_cmd(mvm, &cmd);
845 if (err)
846 return err;
847
848 size = iwl_rx_packet_payload_len(cmd.resp_pkt);
849 if (size < sizeof(__le16)) {
850 err = -EINVAL;
851 } else {
852 err = le16_to_cpup((__le16 *)cmd.resp_pkt->data);
853 /* firmware returns next, not last-used seqno */
854 err = (u16) (err - 0x10);
855 }
856
857 iwl_free_resp(&cmd);
858 return err;
859}
860
861void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
862{
863 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
864 struct iwl_nonqos_seq_query_cmd query_cmd = {
865 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET),
866 .mac_id_n_color =
867 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
868 mvmvif->color)),
869 .value = cpu_to_le16(mvmvif->seqno),
870 };
871
872 /* return if called during restart, not resume from D3 */
873 if (!mvmvif->seqno_valid)
874 return;
875
876 mvmvif->seqno_valid = false;
877
878 if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0,
879 sizeof(query_cmd), &query_cmd))
880 IWL_ERR(mvm, "failed to set non-QoS seqno\n");
881}
882
883static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm)
884{
885 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
886
887 iwl_mvm_stop_device(mvm);
888 /*
889 * Set the HW restart bit -- this is mostly true as we're
890 * going to load new firmware and reprogram that, though
891 * the reprogramming is going to be manual to avoid adding
892 * all the MACs that aren't support.
893 * We don't have to clear up everything though because the
894 * reprogramming is manual. When we resume, we'll actually
895 * go through a proper restart sequence again to switch
896 * back to the runtime firmware image.
897 */
898 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
899
900 /* the fw is reset, so all the keys are cleared */
901 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
902
903 mvm->ptk_ivlen = 0;
904 mvm->ptk_icvlen = 0;
905 mvm->ptk_ivlen = 0;
906 mvm->ptk_icvlen = 0;
907
908 return iwl_mvm_load_d3_fw(mvm);
909}
910
911static int
912iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm,
913 struct cfg80211_wowlan *wowlan,
914 struct iwl_wowlan_config_cmd *wowlan_config_cmd,
915 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
916 struct ieee80211_sta *ap_sta)
917{
918 struct iwl_mvm_sta *mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
919
920 /* TODO: wowlan_config_cmd->wowlan_ba_teardown_tids */
921
922 wowlan_config_cmd->is_11n_connection =
923 ap_sta->deflink.ht_cap.ht_supported;
924 wowlan_config_cmd->flags = ENABLE_L3_FILTERING |
925 ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING;
926
927 if (iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_CONFIGURATION, 0) < 6) {
928 /* Query the last used seqno and set it */
929 int ret = iwl_mvm_get_last_nonqos_seq(mvm, vif);
930
931 if (ret < 0)
932 return ret;
933
934 wowlan_config_cmd->non_qos_seq = cpu_to_le16(ret);
935 }
936
937 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, wowlan_config_cmd);
938
939 if (wowlan->disconnect)
940 wowlan_config_cmd->wakeup_filter |=
941 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
942 IWL_WOWLAN_WAKEUP_LINK_CHANGE);
943 if (wowlan->magic_pkt)
944 wowlan_config_cmd->wakeup_filter |=
945 cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET);
946 if (wowlan->gtk_rekey_failure)
947 wowlan_config_cmd->wakeup_filter |=
948 cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
949 if (wowlan->eap_identity_req)
950 wowlan_config_cmd->wakeup_filter |=
951 cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ);
952 if (wowlan->four_way_handshake)
953 wowlan_config_cmd->wakeup_filter |=
954 cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
955 if (wowlan->n_patterns)
956 wowlan_config_cmd->wakeup_filter |=
957 cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH);
958
959 if (wowlan->rfkill_release)
960 wowlan_config_cmd->wakeup_filter |=
961 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
962
963 if (wowlan->tcp) {
964 /*
965 * Set the "link change" (really "link lost") flag as well
966 * since that implies losing the TCP connection.
967 */
968 wowlan_config_cmd->wakeup_filter |=
969 cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS |
970 IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE |
971 IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET |
972 IWL_WOWLAN_WAKEUP_LINK_CHANGE);
973 }
974
975 if (wowlan->any) {
976 wowlan_config_cmd->wakeup_filter |=
977 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
978 IWL_WOWLAN_WAKEUP_LINK_CHANGE |
979 IWL_WOWLAN_WAKEUP_RX_FRAME |
980 IWL_WOWLAN_WAKEUP_BCN_FILTERING);
981 }
982
983 return 0;
984}
985
986static int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm,
987 struct ieee80211_vif *vif)
988{
989 bool unified = fw_has_capa(&mvm->fw->ucode_capa,
990 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
991 struct wowlan_key_reprogram_data key_data = {};
992 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
993 int ret;
994 u8 cmd_ver;
995 size_t cmd_size;
996
997 if (!unified) {
998 /*
999 * if we have to configure keys, call ieee80211_iter_keys(),
1000 * as we need non-atomic context in order to take the
1001 * required locks.
1002 */
1003 /*
1004 * Note that currently we don't use CMD_ASYNC in the iterator.
1005 * In case of key_data.configure_keys, all the configured
1006 * commands are SYNC, and iwl_mvm_wowlan_program_keys() will
1007 * take care of locking/unlocking mvm->mutex.
1008 */
1009 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_program_keys,
1010 &key_data);
1011
1012 if (key_data.error)
1013 return -EIO;
1014 }
1015
1016 ret = iwl_mvm_wowlan_config_rsc_tsc(mvm, vif);
1017 if (ret)
1018 return ret;
1019
1020 if (!fw_has_api(&mvm->fw->ucode_capa,
1021 IWL_UCODE_TLV_API_TKIP_MIC_KEYS)) {
1022 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TKIP_PARAM,
1023 IWL_FW_CMD_VER_UNKNOWN);
1024 struct wowlan_key_tkip_data tkip_data = {};
1025 int size;
1026
1027 if (ver == 2) {
1028 size = sizeof(tkip_data.tkip);
1029 tkip_data.tkip.sta_id =
1030 cpu_to_le32(mvmvif->ap_sta_id);
1031 } else if (ver == 1 || ver == IWL_FW_CMD_VER_UNKNOWN) {
1032 size = sizeof(struct iwl_wowlan_tkip_params_cmd_ver_1);
1033 } else {
1034 WARN_ON_ONCE(1);
1035 return -EINVAL;
1036 }
1037
1038 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_get_tkip_data,
1039 &tkip_data);
1040
1041 if (tkip_data.have_tkip_keys) {
1042 /* send relevant data according to CMD version */
1043 ret = iwl_mvm_send_cmd_pdu(mvm,
1044 WOWLAN_TKIP_PARAM,
1045 CMD_ASYNC, size,
1046 &tkip_data.tkip);
1047 if (ret)
1048 return ret;
1049 }
1050 }
1051
1052 /* configure rekey data only if offloaded rekey is supported (d3) */
1053 if (mvmvif->rekey_data.valid) {
1054 struct iwl_wowlan_kek_kck_material_cmd_v4 kek_kck_cmd = {};
1055 struct iwl_wowlan_kek_kck_material_cmd_v4 *_kek_kck_cmd =
1056 &kek_kck_cmd;
1057 struct wowlan_key_gtk_type_iter gtk_type_data = {
1058 .kek_kck_cmd = _kek_kck_cmd,
1059 };
1060
1061 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,
1062 WOWLAN_KEK_KCK_MATERIAL,
1063 IWL_FW_CMD_VER_UNKNOWN);
1064 if (WARN_ON(cmd_ver != 2 && cmd_ver != 3 && cmd_ver != 4 &&
1065 cmd_ver != IWL_FW_CMD_VER_UNKNOWN))
1066 return -EINVAL;
1067
1068 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_gtk_type_iter,
1069 >k_type_data);
1070
1071 memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck,
1072 mvmvif->rekey_data.kck_len);
1073 kek_kck_cmd.kck_len = cpu_to_le16(mvmvif->rekey_data.kck_len);
1074 memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek,
1075 mvmvif->rekey_data.kek_len);
1076 kek_kck_cmd.kek_len = cpu_to_le16(mvmvif->rekey_data.kek_len);
1077 kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr;
1078 kek_kck_cmd.akm = cpu_to_le32(mvmvif->rekey_data.akm);
1079 kek_kck_cmd.sta_id = cpu_to_le32(mvmvif->ap_sta_id);
1080
1081 if (cmd_ver == 4) {
1082 cmd_size = sizeof(struct iwl_wowlan_kek_kck_material_cmd_v4);
1083 } else {
1084 if (cmd_ver == 3)
1085 cmd_size =
1086 sizeof(struct iwl_wowlan_kek_kck_material_cmd_v3);
1087 else
1088 cmd_size =
1089 sizeof(struct iwl_wowlan_kek_kck_material_cmd_v2);
1090 /* skip the sta_id at the beginning */
1091 _kek_kck_cmd = (void *)
1092 ((u8 *)_kek_kck_cmd + sizeof(kek_kck_cmd.sta_id));
1093 }
1094
1095 IWL_DEBUG_WOWLAN(mvm, "setting akm %d\n",
1096 mvmvif->rekey_data.akm);
1097
1098 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_KEK_KCK_MATERIAL,
1099 CMD_ASYNC, cmd_size, _kek_kck_cmd);
1100 if (ret)
1101 return ret;
1102 }
1103
1104 return 0;
1105}
1106
1107static int
1108iwl_mvm_wowlan_config(struct iwl_mvm *mvm,
1109 struct cfg80211_wowlan *wowlan,
1110 struct iwl_wowlan_config_cmd *wowlan_config_cmd,
1111 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
1112 struct ieee80211_sta *ap_sta)
1113{
1114 int ret;
1115 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1116 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1117
1118 mvm->offload_tid = wowlan_config_cmd->offloading_tid;
1119
1120 if (!unified_image) {
1121 ret = iwl_mvm_switch_to_d3(mvm);
1122 if (ret)
1123 return ret;
1124
1125 ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta);
1126 if (ret)
1127 return ret;
1128 }
1129
1130 /*
1131 * This needs to be unlocked due to lock ordering
1132 * constraints. Since we're in the suspend path
1133 * that isn't really a problem though.
1134 */
1135 mutex_unlock(&mvm->mutex);
1136 ret = iwl_mvm_wowlan_config_key_params(mvm, vif);
1137 mutex_lock(&mvm->mutex);
1138 if (ret)
1139 return ret;
1140
1141 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0,
1142 sizeof(*wowlan_config_cmd),
1143 wowlan_config_cmd);
1144 if (ret)
1145 return ret;
1146
1147 if (fw_has_api(&mvm->fw->ucode_capa,
1148 IWL_UCODE_TLV_API_WOWLAN_TCP_SYN_WAKE))
1149 ret = iwl_mvm_send_patterns(mvm, vif, wowlan);
1150 else
1151 ret = iwl_mvm_send_patterns_v1(mvm, wowlan);
1152 if (ret)
1153 return ret;
1154
1155 return iwl_mvm_send_proto_offload(mvm, vif, false, true, 0);
1156}
1157
1158static int
1159iwl_mvm_netdetect_config(struct iwl_mvm *mvm,
1160 struct cfg80211_wowlan *wowlan,
1161 struct cfg80211_sched_scan_request *nd_config,
1162 struct ieee80211_vif *vif)
1163{
1164 int ret;
1165 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1166 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1167
1168 if (!unified_image) {
1169 ret = iwl_mvm_switch_to_d3(mvm);
1170 if (ret)
1171 return ret;
1172 } else {
1173 /* In theory, we wouldn't have to stop a running sched
1174 * scan in order to start another one (for
1175 * net-detect). But in practice this doesn't seem to
1176 * work properly, so stop any running sched_scan now.
1177 */
1178 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
1179 if (ret)
1180 return ret;
1181 }
1182
1183 ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies,
1184 IWL_MVM_SCAN_NETDETECT);
1185 if (ret)
1186 return ret;
1187
1188 if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels))
1189 return -EBUSY;
1190
1191 /* save the sched scan matchsets... */
1192 if (nd_config->n_match_sets) {
1193 mvm->nd_match_sets = kmemdup(nd_config->match_sets,
1194 sizeof(*nd_config->match_sets) *
1195 nd_config->n_match_sets,
1196 GFP_KERNEL);
1197 if (mvm->nd_match_sets)
1198 mvm->n_nd_match_sets = nd_config->n_match_sets;
1199 }
1200
1201 /* ...and the sched scan channels for later reporting */
1202 mvm->nd_channels = kmemdup(nd_config->channels,
1203 sizeof(*nd_config->channels) *
1204 nd_config->n_channels,
1205 GFP_KERNEL);
1206 if (mvm->nd_channels)
1207 mvm->n_nd_channels = nd_config->n_channels;
1208
1209 return 0;
1210}
1211
1212static void iwl_mvm_free_nd(struct iwl_mvm *mvm)
1213{
1214 kfree(mvm->nd_match_sets);
1215 mvm->nd_match_sets = NULL;
1216 mvm->n_nd_match_sets = 0;
1217 kfree(mvm->nd_channels);
1218 mvm->nd_channels = NULL;
1219 mvm->n_nd_channels = 0;
1220}
1221
1222static int __iwl_mvm_suspend(struct ieee80211_hw *hw,
1223 struct cfg80211_wowlan *wowlan,
1224 bool test)
1225{
1226 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1227 struct ieee80211_vif *vif = NULL;
1228 struct iwl_mvm_vif *mvmvif = NULL;
1229 struct ieee80211_sta *ap_sta = NULL;
1230 struct iwl_d3_manager_config d3_cfg_cmd_data = {
1231 /*
1232 * Program the minimum sleep time to 10 seconds, as many
1233 * platforms have issues processing a wakeup signal while
1234 * still being in the process of suspending.
1235 */
1236 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000),
1237 };
1238 struct iwl_host_cmd d3_cfg_cmd = {
1239 .id = D3_CONFIG_CMD,
1240 .flags = CMD_WANT_SKB | CMD_SEND_IN_D3,
1241 .data[0] = &d3_cfg_cmd_data,
1242 .len[0] = sizeof(d3_cfg_cmd_data),
1243 };
1244 int ret;
1245 int len __maybe_unused;
1246 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1247 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1248
1249 if (!wowlan) {
1250 /*
1251 * mac80211 shouldn't get here, but for D3 test
1252 * it doesn't warrant a warning
1253 */
1254 WARN_ON(!test);
1255 return -EINVAL;
1256 }
1257
1258 mutex_lock(&mvm->mutex);
1259
1260 set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
1261
1262 synchronize_net();
1263
1264 vif = iwl_mvm_get_bss_vif(mvm);
1265 if (IS_ERR_OR_NULL(vif)) {
1266 ret = 1;
1267 goto out_noreset;
1268 }
1269
1270 mvmvif = iwl_mvm_vif_from_mac80211(vif);
1271
1272 if (mvmvif->ap_sta_id == IWL_MVM_INVALID_STA) {
1273 /* if we're not associated, this must be netdetect */
1274 if (!wowlan->nd_config) {
1275 ret = 1;
1276 goto out_noreset;
1277 }
1278
1279 ret = iwl_mvm_netdetect_config(
1280 mvm, wowlan, wowlan->nd_config, vif);
1281 if (ret)
1282 goto out;
1283
1284 mvm->net_detect = true;
1285 } else {
1286 struct iwl_wowlan_config_cmd wowlan_config_cmd = {};
1287
1288 wowlan_config_cmd.sta_id = mvmvif->ap_sta_id;
1289
1290 ap_sta = rcu_dereference_protected(
1291 mvm->fw_id_to_mac_id[mvmvif->ap_sta_id],
1292 lockdep_is_held(&mvm->mutex));
1293 if (IS_ERR_OR_NULL(ap_sta)) {
1294 ret = -EINVAL;
1295 goto out_noreset;
1296 }
1297
1298 ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1299 vif, mvmvif, ap_sta);
1300 if (ret)
1301 goto out_noreset;
1302 ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1303 vif, mvmvif, ap_sta);
1304 if (ret)
1305 goto out;
1306
1307 mvm->net_detect = false;
1308 }
1309
1310 ret = iwl_mvm_power_update_device(mvm);
1311 if (ret)
1312 goto out;
1313
1314 ret = iwl_mvm_power_update_mac(mvm);
1315 if (ret)
1316 goto out;
1317
1318#ifdef CONFIG_IWLWIFI_DEBUGFS
1319 if (mvm->d3_wake_sysassert)
1320 d3_cfg_cmd_data.wakeup_flags |=
1321 cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR);
1322#endif
1323
1324 /*
1325 * Prior to 9000 device family the driver needs to stop the dbg
1326 * recording before entering D3. In later devices the FW stops the
1327 * recording automatically.
1328 */
1329 if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_9000)
1330 iwl_fw_dbg_stop_restart_recording(&mvm->fwrt, NULL, true);
1331
1332 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_D3;
1333
1334 /* must be last -- this switches firmware state */
1335 ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd);
1336 if (ret)
1337 goto out;
1338#ifdef CONFIG_IWLWIFI_DEBUGFS
1339 len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt);
1340 if (len >= sizeof(u32)) {
1341 mvm->d3_test_pme_ptr =
1342 le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data);
1343 }
1344#endif
1345 iwl_free_resp(&d3_cfg_cmd);
1346
1347 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1348
1349 ret = iwl_trans_d3_suspend(mvm->trans, test, !unified_image);
1350 out:
1351 if (ret < 0) {
1352 iwl_mvm_free_nd(mvm);
1353
1354 if (!unified_image) {
1355 if (mvm->fw_restart > 0) {
1356 mvm->fw_restart--;
1357 ieee80211_restart_hw(mvm->hw);
1358 }
1359 }
1360
1361 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
1362 }
1363 out_noreset:
1364 mutex_unlock(&mvm->mutex);
1365
1366 return ret;
1367}
1368
1369int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
1370{
1371 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1372
1373 iwl_mvm_pause_tcm(mvm, true);
1374
1375 iwl_fw_runtime_suspend(&mvm->fwrt);
1376
1377 return __iwl_mvm_suspend(hw, wowlan, false);
1378}
1379
1380/* converted data from the different status responses */
1381struct iwl_wowlan_status_data {
1382 u64 replay_ctr;
1383 u32 num_of_gtk_rekeys;
1384 u32 received_beacons;
1385 u32 wakeup_reasons;
1386 u32 wake_packet_length;
1387 u32 wake_packet_bufsize;
1388 u16 pattern_number;
1389 u16 non_qos_seq_ctr;
1390 u16 qos_seq_ctr[8];
1391 u8 tid_tear_down;
1392
1393 struct {
1394 /* including RX MIC key for TKIP */
1395 u8 key[WOWLAN_KEY_MAX_SIZE];
1396 u8 len;
1397 u8 flags;
1398 } gtk;
1399
1400 struct {
1401 /*
1402 * We store both the TKIP and AES representations
1403 * coming from the firmware because we decode the
1404 * data from there before we iterate the keys and
1405 * know which one we need.
1406 */
1407 struct {
1408 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT];
1409 } tkip, aes;
1410
1411 /*
1412 * We use -1 for when we have valid data but don't know
1413 * the key ID from firmware, and thus it needs to be
1414 * installed with the last key (depending on rekeying).
1415 */
1416 s8 key_id;
1417 bool valid;
1418 } gtk_seq[2];
1419
1420 struct {
1421 /* Same as above */
1422 struct {
1423 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT];
1424 u64 tx_pn;
1425 } tkip, aes;
1426 } ptk;
1427
1428 struct {
1429 u64 ipn;
1430 u8 key[WOWLAN_KEY_MAX_SIZE];
1431 u8 len;
1432 u8 flags;
1433 } igtk;
1434
1435 u8 *wake_packet;
1436};
1437
1438static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm,
1439 struct ieee80211_vif *vif,
1440 struct iwl_wowlan_status_data *status)
1441{
1442 struct sk_buff *pkt = NULL;
1443 struct cfg80211_wowlan_wakeup wakeup = {
1444 .pattern_idx = -1,
1445 };
1446 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
1447 u32 reasons = status->wakeup_reasons;
1448
1449 if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
1450 wakeup_report = NULL;
1451 goto report;
1452 }
1453
1454 pm_wakeup_event(mvm->dev, 0);
1455
1456 if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET)
1457 wakeup.magic_pkt = true;
1458
1459 if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN)
1460 wakeup.pattern_idx =
1461 status->pattern_number;
1462
1463 if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1464 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH))
1465 wakeup.disconnect = true;
1466
1467 if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)
1468 wakeup.gtk_rekey_failure = true;
1469
1470 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
1471 wakeup.rfkill_release = true;
1472
1473 if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST)
1474 wakeup.eap_identity_req = true;
1475
1476 if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE)
1477 wakeup.four_way_handshake = true;
1478
1479 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS)
1480 wakeup.tcp_connlost = true;
1481
1482 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE)
1483 wakeup.tcp_nomoretokens = true;
1484
1485 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET)
1486 wakeup.tcp_match = true;
1487
1488 if (status->wake_packet) {
1489 int pktsize = status->wake_packet_bufsize;
1490 int pktlen = status->wake_packet_length;
1491 const u8 *pktdata = status->wake_packet;
1492 const struct ieee80211_hdr *hdr = (const void *)pktdata;
1493 int truncated = pktlen - pktsize;
1494
1495 /* this would be a firmware bug */
1496 if (WARN_ON_ONCE(truncated < 0))
1497 truncated = 0;
1498
1499 if (ieee80211_is_data(hdr->frame_control)) {
1500 int hdrlen = ieee80211_hdrlen(hdr->frame_control);
1501 int ivlen = 0, icvlen = 4; /* also FCS */
1502
1503 pkt = alloc_skb(pktsize, GFP_KERNEL);
1504 if (!pkt)
1505 goto report;
1506
1507 skb_put_data(pkt, pktdata, hdrlen);
1508 pktdata += hdrlen;
1509 pktsize -= hdrlen;
1510
1511 if (ieee80211_has_protected(hdr->frame_control)) {
1512 /*
1513 * This is unlocked and using gtk_i(c)vlen,
1514 * but since everything is under RTNL still
1515 * that's not really a problem - changing
1516 * it would be difficult.
1517 */
1518 if (is_multicast_ether_addr(hdr->addr1)) {
1519 ivlen = mvm->gtk_ivlen;
1520 icvlen += mvm->gtk_icvlen;
1521 } else {
1522 ivlen = mvm->ptk_ivlen;
1523 icvlen += mvm->ptk_icvlen;
1524 }
1525 }
1526
1527 /* if truncated, FCS/ICV is (partially) gone */
1528 if (truncated >= icvlen) {
1529 icvlen = 0;
1530 truncated -= icvlen;
1531 } else {
1532 icvlen -= truncated;
1533 truncated = 0;
1534 }
1535
1536 pktsize -= ivlen + icvlen;
1537 pktdata += ivlen;
1538
1539 skb_put_data(pkt, pktdata, pktsize);
1540
1541 if (ieee80211_data_to_8023(pkt, vif->addr, vif->type))
1542 goto report;
1543 wakeup.packet = pkt->data;
1544 wakeup.packet_present_len = pkt->len;
1545 wakeup.packet_len = pkt->len - truncated;
1546 wakeup.packet_80211 = false;
1547 } else {
1548 int fcslen = 4;
1549
1550 if (truncated >= 4) {
1551 truncated -= 4;
1552 fcslen = 0;
1553 } else {
1554 fcslen -= truncated;
1555 truncated = 0;
1556 }
1557 pktsize -= fcslen;
1558 wakeup.packet = status->wake_packet;
1559 wakeup.packet_present_len = pktsize;
1560 wakeup.packet_len = pktlen - truncated;
1561 wakeup.packet_80211 = true;
1562 }
1563 }
1564
1565 report:
1566 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
1567 kfree_skb(pkt);
1568}
1569
1570static void iwl_mvm_le64_to_aes_seq(__le64 le_pn, struct ieee80211_key_seq *seq)
1571{
1572 u64 pn = le64_to_cpu(le_pn);
1573
1574 seq->ccmp.pn[0] = pn >> 40;
1575 seq->ccmp.pn[1] = pn >> 32;
1576 seq->ccmp.pn[2] = pn >> 24;
1577 seq->ccmp.pn[3] = pn >> 16;
1578 seq->ccmp.pn[4] = pn >> 8;
1579 seq->ccmp.pn[5] = pn;
1580}
1581
1582static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc,
1583 struct ieee80211_key_seq *seq)
1584{
1585 iwl_mvm_le64_to_aes_seq(sc->pn, seq);
1586}
1587
1588static void iwl_mvm_le64_to_tkip_seq(__le64 le_pn, struct ieee80211_key_seq *seq)
1589{
1590 u64 pn = le64_to_cpu(le_pn);
1591
1592 seq->tkip.iv16 = (u16)pn;
1593 seq->tkip.iv32 = (u32)(pn >> 16);
1594}
1595
1596static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc,
1597 struct ieee80211_key_seq *seq)
1598{
1599 seq->tkip.iv32 = le32_to_cpu(sc->iv32);
1600 seq->tkip.iv16 = le16_to_cpu(sc->iv16);
1601}
1602
1603static void iwl_mvm_set_key_rx_seq_tids(struct ieee80211_key_conf *key,
1604 struct ieee80211_key_seq *seq)
1605{
1606 int tid;
1607
1608 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++)
1609 ieee80211_set_key_rx_seq(key, tid, &seq[tid]);
1610}
1611
1612static void iwl_mvm_set_aes_ptk_rx_seq(struct iwl_mvm *mvm,
1613 struct iwl_wowlan_status_data *status,
1614 struct ieee80211_sta *sta,
1615 struct ieee80211_key_conf *key)
1616{
1617 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1618 struct iwl_mvm_key_pn *ptk_pn;
1619 int tid;
1620
1621 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.aes.seq);
1622
1623 if (!iwl_mvm_has_new_rx_api(mvm))
1624 return;
1625
1626
1627 rcu_read_lock();
1628 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]);
1629 if (WARN_ON(!ptk_pn)) {
1630 rcu_read_unlock();
1631 return;
1632 }
1633
1634 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1635 int i;
1636
1637 for (i = 1; i < mvm->trans->num_rx_queues; i++)
1638 memcpy(ptk_pn->q[i].pn[tid],
1639 status->ptk.aes.seq[tid].ccmp.pn,
1640 IEEE80211_CCMP_PN_LEN);
1641 }
1642 rcu_read_unlock();
1643}
1644
1645static void iwl_mvm_convert_key_counters(struct iwl_wowlan_status_data *status,
1646 union iwl_all_tsc_rsc *sc)
1647{
1648 int i;
1649
1650 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT);
1651 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC);
1652
1653 /* GTK RX counters */
1654 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1655 iwl_mvm_tkip_sc_to_seq(&sc->tkip.multicast_rsc[i],
1656 &status->gtk_seq[0].tkip.seq[i]);
1657 iwl_mvm_aes_sc_to_seq(&sc->aes.multicast_rsc[i],
1658 &status->gtk_seq[0].aes.seq[i]);
1659 }
1660 status->gtk_seq[0].valid = true;
1661 status->gtk_seq[0].key_id = -1;
1662
1663 /* PTK TX counter */
1664 status->ptk.tkip.tx_pn = (u64)le16_to_cpu(sc->tkip.tsc.iv16) |
1665 ((u64)le32_to_cpu(sc->tkip.tsc.iv32) << 16);
1666 status->ptk.aes.tx_pn = le64_to_cpu(sc->aes.tsc.pn);
1667
1668 /* PTK RX counters */
1669 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1670 iwl_mvm_tkip_sc_to_seq(&sc->tkip.unicast_rsc[i],
1671 &status->ptk.tkip.seq[i]);
1672 iwl_mvm_aes_sc_to_seq(&sc->aes.unicast_rsc[i],
1673 &status->ptk.aes.seq[i]);
1674 }
1675}
1676
1677static void
1678iwl_mvm_convert_key_counters_v5_gtk_seq(struct iwl_wowlan_status_data *status,
1679 struct iwl_wowlan_all_rsc_tsc_v5 *sc,
1680 unsigned int idx, unsigned int key_id)
1681{
1682 int tid;
1683
1684 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1685 iwl_mvm_le64_to_tkip_seq(sc->mcast_rsc[idx][tid],
1686 &status->gtk_seq[idx].tkip.seq[tid]);
1687 iwl_mvm_le64_to_aes_seq(sc->mcast_rsc[idx][tid],
1688 &status->gtk_seq[idx].aes.seq[tid]);
1689 }
1690
1691 status->gtk_seq[idx].valid = true;
1692 status->gtk_seq[idx].key_id = key_id;
1693}
1694
1695static void
1696iwl_mvm_convert_key_counters_v5(struct iwl_wowlan_status_data *status,
1697 struct iwl_wowlan_all_rsc_tsc_v5 *sc)
1698{
1699 int i, tid;
1700
1701 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT);
1702 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC);
1703 BUILD_BUG_ON(ARRAY_SIZE(sc->mcast_rsc) != ARRAY_SIZE(status->gtk_seq));
1704
1705 /* GTK RX counters */
1706 for (i = 0; i < ARRAY_SIZE(sc->mcast_key_id_map); i++) {
1707 u8 entry = sc->mcast_key_id_map[i];
1708
1709 if (entry < ARRAY_SIZE(sc->mcast_rsc))
1710 iwl_mvm_convert_key_counters_v5_gtk_seq(status, sc,
1711 entry, i);
1712 }
1713
1714 /* PTK TX counters not needed, assigned in device */
1715
1716 /* PTK RX counters */
1717 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1718 iwl_mvm_le64_to_tkip_seq(sc->ucast_rsc[tid],
1719 &status->ptk.tkip.seq[tid]);
1720 iwl_mvm_le64_to_aes_seq(sc->ucast_rsc[tid],
1721 &status->ptk.aes.seq[tid]);
1722 }
1723}
1724
1725static void iwl_mvm_set_key_rx_seq_idx(struct ieee80211_key_conf *key,
1726 struct iwl_wowlan_status_data *status,
1727 int idx)
1728{
1729 switch (key->cipher) {
1730 case WLAN_CIPHER_SUITE_CCMP:
1731 case WLAN_CIPHER_SUITE_GCMP:
1732 case WLAN_CIPHER_SUITE_GCMP_256:
1733 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].aes.seq);
1734 break;
1735 case WLAN_CIPHER_SUITE_TKIP:
1736 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].tkip.seq);
1737 break;
1738 default:
1739 WARN_ON(1);
1740 }
1741}
1742
1743static void iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf *key,
1744 struct iwl_wowlan_status_data *status,
1745 bool installed)
1746{
1747 int i;
1748
1749 for (i = 0; i < ARRAY_SIZE(status->gtk_seq); i++) {
1750 if (!status->gtk_seq[i].valid)
1751 continue;
1752
1753 /* Handle the case where we know the key ID */
1754 if (status->gtk_seq[i].key_id == key->keyidx) {
1755 s8 new_key_id = -1;
1756
1757 if (status->num_of_gtk_rekeys)
1758 new_key_id = status->gtk.flags &
1759 IWL_WOWLAN_GTK_IDX_MASK;
1760
1761 /* Don't install a new key's value to an old key */
1762 if (new_key_id != key->keyidx)
1763 iwl_mvm_set_key_rx_seq_idx(key, status, i);
1764 continue;
1765 }
1766
1767 /* handle the case where we didn't, last key only */
1768 if (status->gtk_seq[i].key_id == -1 &&
1769 (!status->num_of_gtk_rekeys || installed))
1770 iwl_mvm_set_key_rx_seq_idx(key, status, i);
1771 }
1772}
1773
1774struct iwl_mvm_d3_gtk_iter_data {
1775 struct iwl_mvm *mvm;
1776 struct iwl_wowlan_status_data *status;
1777 void *last_gtk;
1778 u32 cipher;
1779 bool find_phase, unhandled_cipher;
1780 int num_keys;
1781};
1782
1783static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw,
1784 struct ieee80211_vif *vif,
1785 struct ieee80211_sta *sta,
1786 struct ieee80211_key_conf *key,
1787 void *_data)
1788{
1789 struct iwl_mvm_d3_gtk_iter_data *data = _data;
1790 struct iwl_wowlan_status_data *status = data->status;
1791
1792 if (data->unhandled_cipher)
1793 return;
1794
1795 switch (key->cipher) {
1796 case WLAN_CIPHER_SUITE_WEP40:
1797 case WLAN_CIPHER_SUITE_WEP104:
1798 /* ignore WEP completely, nothing to do */
1799 return;
1800 case WLAN_CIPHER_SUITE_CCMP:
1801 case WLAN_CIPHER_SUITE_GCMP:
1802 case WLAN_CIPHER_SUITE_GCMP_256:
1803 case WLAN_CIPHER_SUITE_TKIP:
1804 /* we support these */
1805 break;
1806 default:
1807 /* everything else (even CMAC for MFP) - disconnect from AP */
1808 data->unhandled_cipher = true;
1809 return;
1810 }
1811
1812 data->num_keys++;
1813
1814 /*
1815 * pairwise key - update sequence counters only;
1816 * note that this assumes no TDLS sessions are active
1817 */
1818 if (sta) {
1819 if (data->find_phase)
1820 return;
1821
1822 switch (key->cipher) {
1823 case WLAN_CIPHER_SUITE_CCMP:
1824 case WLAN_CIPHER_SUITE_GCMP:
1825 case WLAN_CIPHER_SUITE_GCMP_256:
1826 atomic64_set(&key->tx_pn, status->ptk.aes.tx_pn);
1827 iwl_mvm_set_aes_ptk_rx_seq(data->mvm, status, sta, key);
1828 break;
1829 case WLAN_CIPHER_SUITE_TKIP:
1830 atomic64_set(&key->tx_pn, status->ptk.tkip.tx_pn);
1831 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.tkip.seq);
1832 break;
1833 }
1834
1835 /* that's it for this key */
1836 return;
1837 }
1838
1839 if (data->find_phase) {
1840 data->last_gtk = key;
1841 data->cipher = key->cipher;
1842 return;
1843 }
1844
1845 if (data->status->num_of_gtk_rekeys)
1846 ieee80211_remove_key(key);
1847
1848 if (data->last_gtk == key)
1849 iwl_mvm_set_key_rx_seq(key, data->status, false);
1850}
1851
1852static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm,
1853 struct ieee80211_vif *vif,
1854 struct iwl_wowlan_status_data *status)
1855{
1856 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1857 struct iwl_mvm_d3_gtk_iter_data gtkdata = {
1858 .mvm = mvm,
1859 .status = status,
1860 };
1861 u32 disconnection_reasons =
1862 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1863 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH;
1864
1865 if (!status || !vif->bss_conf.bssid)
1866 return false;
1867
1868 if (status->wakeup_reasons & disconnection_reasons)
1869 return false;
1870
1871 /* find last GTK that we used initially, if any */
1872 gtkdata.find_phase = true;
1873 ieee80211_iter_keys(mvm->hw, vif,
1874 iwl_mvm_d3_update_keys, >kdata);
1875 /* not trying to keep connections with MFP/unhandled ciphers */
1876 if (gtkdata.unhandled_cipher)
1877 return false;
1878 if (!gtkdata.num_keys)
1879 goto out;
1880 if (!gtkdata.last_gtk)
1881 return false;
1882
1883 /*
1884 * invalidate all other GTKs that might still exist and update
1885 * the one that we used
1886 */
1887 gtkdata.find_phase = false;
1888 ieee80211_iter_keys(mvm->hw, vif,
1889 iwl_mvm_d3_update_keys, >kdata);
1890
1891 IWL_DEBUG_WOWLAN(mvm, "num of GTK rekeying %d\n",
1892 status->num_of_gtk_rekeys);
1893 if (status->num_of_gtk_rekeys) {
1894 struct ieee80211_key_conf *key;
1895 struct {
1896 struct ieee80211_key_conf conf;
1897 u8 key[32];
1898 } conf = {
1899 .conf.cipher = gtkdata.cipher,
1900 .conf.keyidx =
1901 status->gtk.flags & IWL_WOWLAN_GTK_IDX_MASK,
1902 };
1903 __be64 replay_ctr;
1904
1905 IWL_DEBUG_WOWLAN(mvm,
1906 "Received from FW GTK cipher %d, key index %d\n",
1907 conf.conf.cipher, conf.conf.keyidx);
1908
1909 BUILD_BUG_ON(WLAN_KEY_LEN_CCMP != WLAN_KEY_LEN_GCMP);
1910 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_CCMP);
1911 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_GCMP_256);
1912 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_TKIP);
1913 BUILD_BUG_ON(sizeof(conf.key) < sizeof(status->gtk.key));
1914
1915 memcpy(conf.conf.key, status->gtk.key, sizeof(status->gtk.key));
1916
1917 switch (gtkdata.cipher) {
1918 case WLAN_CIPHER_SUITE_CCMP:
1919 case WLAN_CIPHER_SUITE_GCMP:
1920 conf.conf.keylen = WLAN_KEY_LEN_CCMP;
1921 break;
1922 case WLAN_CIPHER_SUITE_GCMP_256:
1923 conf.conf.keylen = WLAN_KEY_LEN_GCMP_256;
1924 break;
1925 case WLAN_CIPHER_SUITE_TKIP:
1926 conf.conf.keylen = WLAN_KEY_LEN_TKIP;
1927 break;
1928 }
1929
1930 key = ieee80211_gtk_rekey_add(vif, &conf.conf);
1931 if (IS_ERR(key))
1932 return false;
1933 iwl_mvm_set_key_rx_seq(key, status, true);
1934
1935 replay_ctr = cpu_to_be64(status->replay_ctr);
1936
1937 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid,
1938 (void *)&replay_ctr, GFP_KERNEL);
1939 }
1940
1941out:
1942 if (iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP,
1943 WOWLAN_GET_STATUSES, 0) < 10) {
1944 mvmvif->seqno_valid = true;
1945 /* +0x10 because the set API expects next-to-use, not last-used */
1946 mvmvif->seqno = status->non_qos_seq_ctr + 0x10;
1947 }
1948
1949 return true;
1950}
1951
1952static void iwl_mvm_convert_gtk_v2(struct iwl_wowlan_status_data *status,
1953 struct iwl_wowlan_gtk_status_v2 *data)
1954{
1955 BUILD_BUG_ON(sizeof(status->gtk.key) < sizeof(data->key));
1956 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY +
1957 sizeof(data->tkip_mic_key) >
1958 sizeof(status->gtk.key));
1959
1960 status->gtk.len = data->key_len;
1961 status->gtk.flags = data->key_flags;
1962
1963 memcpy(status->gtk.key, data->key, sizeof(data->key));
1964
1965 /* if it's as long as the TKIP encryption key, copy MIC key */
1966 if (status->gtk.len == NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY)
1967 memcpy(status->gtk.key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
1968 data->tkip_mic_key, sizeof(data->tkip_mic_key));
1969}
1970
1971static void iwl_mvm_convert_gtk_v3(struct iwl_wowlan_status_data *status,
1972 struct iwl_wowlan_gtk_status_v3 *data)
1973{
1974 /* The parts we need are identical in v2 and v3 */
1975#define CHECK(_f) do { \
1976 BUILD_BUG_ON(offsetof(struct iwl_wowlan_gtk_status_v2, _f) != \
1977 offsetof(struct iwl_wowlan_gtk_status_v3, _f)); \
1978 BUILD_BUG_ON(offsetofend(struct iwl_wowlan_gtk_status_v2, _f) !=\
1979 offsetofend(struct iwl_wowlan_gtk_status_v3, _f)); \
1980} while (0)
1981
1982 CHECK(key);
1983 CHECK(key_len);
1984 CHECK(key_flags);
1985 CHECK(tkip_mic_key);
1986#undef CHECK
1987
1988 iwl_mvm_convert_gtk_v2(status, (void *)data);
1989}
1990
1991static void iwl_mvm_convert_igtk(struct iwl_wowlan_status_data *status,
1992 struct iwl_wowlan_igtk_status *data)
1993{
1994 const u8 *ipn = data->ipn;
1995
1996 BUILD_BUG_ON(sizeof(status->igtk.key) < sizeof(data->key));
1997
1998 status->igtk.len = data->key_len;
1999 status->igtk.flags = data->key_flags;
2000
2001 memcpy(status->igtk.key, data->key, sizeof(data->key));
2002
2003 status->igtk.ipn = ((u64)ipn[5] << 0) |
2004 ((u64)ipn[4] << 8) |
2005 ((u64)ipn[3] << 16) |
2006 ((u64)ipn[2] << 24) |
2007 ((u64)ipn[1] << 32) |
2008 ((u64)ipn[0] << 40);
2009}
2010
2011static void iwl_mvm_parse_wowlan_info_notif(struct iwl_mvm *mvm,
2012 struct iwl_wowlan_info_notif *data,
2013 struct iwl_wowlan_status_data *status,
2014 u32 len)
2015{
2016 u32 i;
2017
2018 if (len < sizeof(*data)) {
2019 IWL_ERR(mvm, "Invalid WoWLAN info notification!\n");
2020 status = NULL;
2021 return;
2022 }
2023
2024 iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc);
2025 iwl_mvm_convert_gtk_v3(status, &data->gtk[0]);
2026 iwl_mvm_convert_igtk(status, &data->igtk[0]);
2027
2028 status->replay_ctr = le64_to_cpu(data->replay_ctr);
2029 status->pattern_number = le16_to_cpu(data->pattern_number);
2030 for (i = 0; i < IWL_MAX_TID_COUNT; i++)
2031 status->qos_seq_ctr[i] =
2032 le16_to_cpu(data->qos_seq_ctr[i]);
2033 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons);
2034 status->num_of_gtk_rekeys =
2035 le32_to_cpu(data->num_of_gtk_rekeys);
2036 status->received_beacons = le32_to_cpu(data->received_beacons);
2037 status->tid_tear_down = data->tid_tear_down;
2038}
2039
2040/* Occasionally, templates would be nice. This is one of those times ... */
2041#define iwl_mvm_parse_wowlan_status_common(_ver) \
2042static struct iwl_wowlan_status_data * \
2043iwl_mvm_parse_wowlan_status_common_ ## _ver(struct iwl_mvm *mvm, \
2044 struct iwl_wowlan_status_ ##_ver *data,\
2045 int len) \
2046{ \
2047 struct iwl_wowlan_status_data *status; \
2048 int data_size, i; \
2049 \
2050 if (len < sizeof(*data)) { \
2051 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \
2052 return NULL; \
2053 } \
2054 \
2055 data_size = ALIGN(le32_to_cpu(data->wake_packet_bufsize), 4); \
2056 if (len != sizeof(*data) + data_size) { \
2057 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \
2058 return NULL; \
2059 } \
2060 \
2061 status = kzalloc(sizeof(*status), GFP_KERNEL); \
2062 if (!status) \
2063 return NULL; \
2064 \
2065 /* copy all the common fields */ \
2066 status->replay_ctr = le64_to_cpu(data->replay_ctr); \
2067 status->pattern_number = le16_to_cpu(data->pattern_number); \
2068 status->non_qos_seq_ctr = le16_to_cpu(data->non_qos_seq_ctr); \
2069 for (i = 0; i < 8; i++) \
2070 status->qos_seq_ctr[i] = \
2071 le16_to_cpu(data->qos_seq_ctr[i]); \
2072 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); \
2073 status->num_of_gtk_rekeys = \
2074 le32_to_cpu(data->num_of_gtk_rekeys); \
2075 status->received_beacons = le32_to_cpu(data->received_beacons); \
2076 status->wake_packet_length = \
2077 le32_to_cpu(data->wake_packet_length); \
2078 status->wake_packet_bufsize = \
2079 le32_to_cpu(data->wake_packet_bufsize); \
2080 if (status->wake_packet_bufsize) { \
2081 status->wake_packet = \
2082 kmemdup(data->wake_packet, \
2083 status->wake_packet_bufsize, \
2084 GFP_KERNEL); \
2085 if (!status->wake_packet) { \
2086 kfree(status); \
2087 return NULL; \
2088 } \
2089 } else { \
2090 status->wake_packet = NULL; \
2091 } \
2092 \
2093 return status; \
2094}
2095
2096iwl_mvm_parse_wowlan_status_common(v6)
2097iwl_mvm_parse_wowlan_status_common(v7)
2098iwl_mvm_parse_wowlan_status_common(v9)
2099iwl_mvm_parse_wowlan_status_common(v12)
2100
2101static struct iwl_wowlan_status_data *
2102iwl_mvm_send_wowlan_get_status(struct iwl_mvm *mvm, u8 sta_id)
2103{
2104 struct iwl_wowlan_status_data *status;
2105 struct iwl_wowlan_get_status_cmd get_status_cmd = {
2106 .sta_id = cpu_to_le32(sta_id),
2107 };
2108 struct iwl_host_cmd cmd = {
2109 .id = WOWLAN_GET_STATUSES,
2110 .flags = CMD_WANT_SKB,
2111 .data = { &get_status_cmd, },
2112 .len = { sizeof(get_status_cmd), },
2113 };
2114 int ret, len;
2115 u8 notif_ver;
2116 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id,
2117 IWL_FW_CMD_VER_UNKNOWN);
2118
2119 if (cmd_ver == IWL_FW_CMD_VER_UNKNOWN)
2120 cmd.len[0] = 0;
2121
2122 lockdep_assert_held(&mvm->mutex);
2123
2124 ret = iwl_mvm_send_cmd(mvm, &cmd);
2125 if (ret) {
2126 IWL_ERR(mvm, "failed to query wakeup status (%d)\n", ret);
2127 return ERR_PTR(ret);
2128 }
2129
2130 len = iwl_rx_packet_payload_len(cmd.resp_pkt);
2131
2132 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */
2133 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP,
2134 WOWLAN_GET_STATUSES, 0);
2135 if (!notif_ver)
2136 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
2137 WOWLAN_GET_STATUSES, 7);
2138
2139 if (!fw_has_api(&mvm->fw->ucode_capa,
2140 IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL)) {
2141 struct iwl_wowlan_status_v6 *v6 = (void *)cmd.resp_pkt->data;
2142
2143 status = iwl_mvm_parse_wowlan_status_common_v6(mvm, v6, len);
2144 if (!status)
2145 goto out_free_resp;
2146
2147 BUILD_BUG_ON(sizeof(v6->gtk.decrypt_key) >
2148 sizeof(status->gtk.key));
2149 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY +
2150 sizeof(v6->gtk.tkip_mic_key) >
2151 sizeof(status->gtk.key));
2152
2153 /* copy GTK info to the right place */
2154 memcpy(status->gtk.key, v6->gtk.decrypt_key,
2155 sizeof(v6->gtk.decrypt_key));
2156 memcpy(status->gtk.key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
2157 v6->gtk.tkip_mic_key,
2158 sizeof(v6->gtk.tkip_mic_key));
2159
2160 iwl_mvm_convert_key_counters(status, &v6->gtk.rsc.all_tsc_rsc);
2161
2162 /* hardcode the key length to 16 since v6 only supports 16 */
2163 status->gtk.len = 16;
2164
2165 /*
2166 * The key index only uses 2 bits (values 0 to 3) and
2167 * we always set bit 7 which means this is the
2168 * currently used key.
2169 */
2170 status->gtk.flags = v6->gtk.key_index | BIT(7);
2171 } else if (notif_ver == 7) {
2172 struct iwl_wowlan_status_v7 *v7 = (void *)cmd.resp_pkt->data;
2173
2174 status = iwl_mvm_parse_wowlan_status_common_v7(mvm, v7, len);
2175 if (!status)
2176 goto out_free_resp;
2177
2178 iwl_mvm_convert_key_counters(status, &v7->gtk[0].rsc.all_tsc_rsc);
2179 iwl_mvm_convert_gtk_v2(status, &v7->gtk[0]);
2180 iwl_mvm_convert_igtk(status, &v7->igtk[0]);
2181 } else if (notif_ver == 9 || notif_ver == 10 || notif_ver == 11) {
2182 struct iwl_wowlan_status_v9 *v9 = (void *)cmd.resp_pkt->data;
2183
2184 /* these three command versions have same layout and size, the
2185 * difference is only in a few not used (reserved) fields.
2186 */
2187 status = iwl_mvm_parse_wowlan_status_common_v9(mvm, v9, len);
2188 if (!status)
2189 goto out_free_resp;
2190
2191 iwl_mvm_convert_key_counters(status, &v9->gtk[0].rsc.all_tsc_rsc);
2192 iwl_mvm_convert_gtk_v2(status, &v9->gtk[0]);
2193 iwl_mvm_convert_igtk(status, &v9->igtk[0]);
2194
2195 status->tid_tear_down = v9->tid_tear_down;
2196 } else if (notif_ver == 12) {
2197 struct iwl_wowlan_status_v12 *v12 = (void *)cmd.resp_pkt->data;
2198
2199 status = iwl_mvm_parse_wowlan_status_common_v12(mvm, v12, len);
2200 if (!status)
2201 goto out_free_resp;
2202
2203 iwl_mvm_convert_key_counters_v5(status, &v12->gtk[0].sc);
2204 iwl_mvm_convert_gtk_v3(status, &v12->gtk[0]);
2205 iwl_mvm_convert_igtk(status, &v12->igtk[0]);
2206
2207 status->tid_tear_down = v12->tid_tear_down;
2208 } else {
2209 IWL_ERR(mvm,
2210 "Firmware advertises unknown WoWLAN status response %d!\n",
2211 notif_ver);
2212 status = NULL;
2213 }
2214
2215out_free_resp:
2216 iwl_free_resp(&cmd);
2217 return status;
2218}
2219
2220/* releases the MVM mutex */
2221static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm,
2222 struct ieee80211_vif *vif,
2223 struct iwl_wowlan_status_data *status)
2224{
2225 int i;
2226 bool keep;
2227 struct iwl_mvm_sta *mvm_ap_sta;
2228
2229 if (!status)
2230 goto out_unlock;
2231
2232 IWL_DEBUG_WOWLAN(mvm, "wakeup reason 0x%x\n",
2233 status->wakeup_reasons);
2234
2235 /* still at hard-coded place 0 for D3 image */
2236 mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, 0);
2237 if (!mvm_ap_sta)
2238 goto out_unlock;
2239
2240 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
2241 u16 seq = status->qos_seq_ctr[i];
2242 /* firmware stores last-used value, we store next value */
2243 seq += 0x10;
2244 mvm_ap_sta->tid_data[i].seq_number = seq;
2245 }
2246
2247 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000) {
2248 i = mvm->offload_tid;
2249 iwl_trans_set_q_ptrs(mvm->trans,
2250 mvm_ap_sta->tid_data[i].txq_id,
2251 mvm_ap_sta->tid_data[i].seq_number >> 4);
2252 }
2253
2254 /* now we have all the data we need, unlock to avoid mac80211 issues */
2255 mutex_unlock(&mvm->mutex);
2256
2257 iwl_mvm_report_wakeup_reasons(mvm, vif, status);
2258
2259 keep = iwl_mvm_setup_connection_keep(mvm, vif, status);
2260
2261 return keep;
2262
2263out_unlock:
2264 mutex_unlock(&mvm->mutex);
2265 return false;
2266}
2267
2268#define ND_QUERY_BUF_LEN (sizeof(struct iwl_scan_offload_profile_match) * \
2269 IWL_SCAN_MAX_PROFILES)
2270
2271struct iwl_mvm_nd_results {
2272 u32 matched_profiles;
2273 u8 matches[ND_QUERY_BUF_LEN];
2274};
2275
2276static int
2277iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm,
2278 struct iwl_mvm_nd_results *results)
2279{
2280 struct iwl_scan_offload_match_info *query;
2281 struct iwl_host_cmd cmd = {
2282 .id = SCAN_OFFLOAD_PROFILES_QUERY_CMD,
2283 .flags = CMD_WANT_SKB,
2284 };
2285 int ret, len;
2286 size_t query_len, matches_len;
2287 int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw);
2288
2289 ret = iwl_mvm_send_cmd(mvm, &cmd);
2290 if (ret) {
2291 IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret);
2292 return ret;
2293 }
2294
2295 if (fw_has_api(&mvm->fw->ucode_capa,
2296 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2297 query_len = sizeof(struct iwl_scan_offload_match_info);
2298 matches_len = sizeof(struct iwl_scan_offload_profile_match) *
2299 max_profiles;
2300 } else {
2301 query_len = sizeof(struct iwl_scan_offload_profiles_query_v1);
2302 matches_len = sizeof(struct iwl_scan_offload_profile_match_v1) *
2303 max_profiles;
2304 }
2305
2306 len = iwl_rx_packet_payload_len(cmd.resp_pkt);
2307 if (len < query_len) {
2308 IWL_ERR(mvm, "Invalid scan offload profiles query response!\n");
2309 ret = -EIO;
2310 goto out_free_resp;
2311 }
2312
2313 query = (void *)cmd.resp_pkt->data;
2314
2315 results->matched_profiles = le32_to_cpu(query->matched_profiles);
2316 memcpy(results->matches, query->matches, matches_len);
2317
2318#ifdef CONFIG_IWLWIFI_DEBUGFS
2319 mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done);
2320#endif
2321
2322out_free_resp:
2323 iwl_free_resp(&cmd);
2324 return ret;
2325}
2326
2327static int iwl_mvm_query_num_match_chans(struct iwl_mvm *mvm,
2328 struct iwl_mvm_nd_results *results,
2329 int idx)
2330{
2331 int n_chans = 0, i;
2332
2333 if (fw_has_api(&mvm->fw->ucode_capa,
2334 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2335 struct iwl_scan_offload_profile_match *matches =
2336 (void *)results->matches;
2337
2338 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; i++)
2339 n_chans += hweight8(matches[idx].matching_channels[i]);
2340 } else {
2341 struct iwl_scan_offload_profile_match_v1 *matches =
2342 (void *)results->matches;
2343
2344 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1; i++)
2345 n_chans += hweight8(matches[idx].matching_channels[i]);
2346 }
2347
2348 return n_chans;
2349}
2350
2351static void iwl_mvm_query_set_freqs(struct iwl_mvm *mvm,
2352 struct iwl_mvm_nd_results *results,
2353 struct cfg80211_wowlan_nd_match *match,
2354 int idx)
2355{
2356 int i;
2357
2358 if (fw_has_api(&mvm->fw->ucode_capa,
2359 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2360 struct iwl_scan_offload_profile_match *matches =
2361 (void *)results->matches;
2362
2363 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; i++)
2364 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
2365 match->channels[match->n_channels++] =
2366 mvm->nd_channels[i]->center_freq;
2367 } else {
2368 struct iwl_scan_offload_profile_match_v1 *matches =
2369 (void *)results->matches;
2370
2371 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1 * 8; i++)
2372 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
2373 match->channels[match->n_channels++] =
2374 mvm->nd_channels[i]->center_freq;
2375 }
2376}
2377
2378/**
2379 * enum iwl_d3_notif - d3 notifications
2380 * @IWL_D3_NOTIF_WOWLAN_INFO: WOWLAN_INFO_NOTIF was received
2381 * @IWL_D3_NOTIF_WOWLAN_WAKE_PKT: WOWLAN_WAKE_PKT_NOTIF was received
2382 * @IWL_D3_NOTIF_PROT_OFFLOAD: PROT_OFFLOAD_NOTIF was received
2383 * @IWL_D3_ND_MATCH_INFO: OFFLOAD_MATCH_INFO_NOTIF was received
2384 * @IWL_D3_NOTIF_D3_END_NOTIF: D3_END_NOTIF was received
2385 */
2386enum iwl_d3_notif {
2387 IWL_D3_NOTIF_WOWLAN_INFO = BIT(0),
2388 IWL_D3_NOTIF_WOWLAN_WAKE_PKT = BIT(1),
2389 IWL_D3_NOTIF_PROT_OFFLOAD = BIT(2),
2390 IWL_D3_ND_MATCH_INFO = BIT(3),
2391 IWL_D3_NOTIF_D3_END_NOTIF = BIT(4)
2392};
2393
2394/* manage d3 resume data */
2395struct iwl_d3_data {
2396 struct iwl_wowlan_status_data *status;
2397 bool test;
2398 u32 d3_end_flags;
2399 u32 notif_expected; /* bitmap - see &enum iwl_d3_notif */
2400 u32 notif_received; /* bitmap - see &enum iwl_d3_notif */
2401 struct iwl_mvm_nd_results *nd_results;
2402 bool nd_results_valid;
2403};
2404
2405static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm,
2406 struct ieee80211_vif *vif,
2407 struct iwl_d3_data *d3_data)
2408{
2409 struct cfg80211_wowlan_nd_info *net_detect = NULL;
2410 struct cfg80211_wowlan_wakeup wakeup = {
2411 .pattern_idx = -1,
2412 };
2413 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
2414 unsigned long matched_profiles;
2415 u32 reasons = 0;
2416 int i, n_matches, ret;
2417
2418 if (WARN_ON(!d3_data || !d3_data->status))
2419 goto out;
2420
2421 reasons = d3_data->status->wakeup_reasons;
2422
2423 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
2424 wakeup.rfkill_release = true;
2425
2426 if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS)
2427 goto out;
2428
2429 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
2430 WOWLAN_INFO_NOTIFICATION, 0)) {
2431 IWL_INFO(mvm, "Query FW for ND results\n");
2432 ret = iwl_mvm_netdetect_query_results(mvm, d3_data->nd_results);
2433
2434 } else {
2435 IWL_INFO(mvm, "Notification based ND results\n");
2436 ret = d3_data->nd_results_valid ? 0 : -1;
2437 }
2438
2439 if (ret || !d3_data->nd_results->matched_profiles) {
2440 wakeup_report = NULL;
2441 goto out;
2442 }
2443
2444 matched_profiles = d3_data->nd_results->matched_profiles;
2445 if (mvm->n_nd_match_sets) {
2446 n_matches = hweight_long(matched_profiles);
2447 } else {
2448 IWL_ERR(mvm, "no net detect match information available\n");
2449 n_matches = 0;
2450 }
2451
2452 net_detect = kzalloc(struct_size(net_detect, matches, n_matches),
2453 GFP_KERNEL);
2454 if (!net_detect || !n_matches)
2455 goto out_report_nd;
2456
2457 for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) {
2458 struct cfg80211_wowlan_nd_match *match;
2459 int idx, n_channels = 0;
2460
2461 n_channels = iwl_mvm_query_num_match_chans(mvm,
2462 d3_data->nd_results,
2463 i);
2464
2465 match = kzalloc(struct_size(match, channels, n_channels),
2466 GFP_KERNEL);
2467 if (!match)
2468 goto out_report_nd;
2469
2470 net_detect->matches[net_detect->n_matches++] = match;
2471
2472 /* We inverted the order of the SSIDs in the scan
2473 * request, so invert the index here.
2474 */
2475 idx = mvm->n_nd_match_sets - i - 1;
2476 match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len;
2477 memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid,
2478 match->ssid.ssid_len);
2479
2480 if (mvm->n_nd_channels < n_channels)
2481 continue;
2482
2483 iwl_mvm_query_set_freqs(mvm, d3_data->nd_results, match, i);
2484 }
2485
2486out_report_nd:
2487 wakeup.net_detect = net_detect;
2488out:
2489 iwl_mvm_free_nd(mvm);
2490
2491 mutex_unlock(&mvm->mutex);
2492 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
2493
2494 if (net_detect) {
2495 for (i = 0; i < net_detect->n_matches; i++)
2496 kfree(net_detect->matches[i]);
2497 kfree(net_detect);
2498 }
2499}
2500
2501static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac,
2502 struct ieee80211_vif *vif)
2503{
2504 /* skip the one we keep connection on */
2505 if (data == vif)
2506 return;
2507
2508 if (vif->type == NL80211_IFTYPE_STATION)
2509 ieee80211_resume_disconnect(vif);
2510}
2511
2512static bool iwl_mvm_rt_status(struct iwl_trans *trans, u32 base, u32 *err_id)
2513{
2514 struct error_table_start {
2515 /* cf. struct iwl_error_event_table */
2516 u32 valid;
2517 __le32 err_id;
2518 } err_info;
2519
2520 if (!base)
2521 return false;
2522
2523 iwl_trans_read_mem_bytes(trans, base,
2524 &err_info, sizeof(err_info));
2525 if (err_info.valid && err_id)
2526 *err_id = le32_to_cpu(err_info.err_id);
2527
2528 return !!err_info.valid;
2529}
2530
2531static bool iwl_mvm_check_rt_status(struct iwl_mvm *mvm,
2532 struct ieee80211_vif *vif)
2533{
2534 u32 err_id;
2535
2536 /* check for lmac1 error */
2537 if (iwl_mvm_rt_status(mvm->trans,
2538 mvm->trans->dbg.lmac_error_event_table[0],
2539 &err_id)) {
2540 if (err_id == RF_KILL_INDICATOR_FOR_WOWLAN) {
2541 struct cfg80211_wowlan_wakeup wakeup = {
2542 .rfkill_release = true,
2543 };
2544 ieee80211_report_wowlan_wakeup(vif, &wakeup,
2545 GFP_KERNEL);
2546 }
2547 return true;
2548 }
2549
2550 /* check if we have lmac2 set and check for error */
2551 if (iwl_mvm_rt_status(mvm->trans,
2552 mvm->trans->dbg.lmac_error_event_table[1], NULL))
2553 return true;
2554
2555 /* check for umac error */
2556 if (iwl_mvm_rt_status(mvm->trans,
2557 mvm->trans->dbg.umac_error_event_table, NULL))
2558 return true;
2559
2560 return false;
2561}
2562
2563/*
2564 * This function assumes:
2565 * 1. The mutex is already held.
2566 * 2. The callee functions unlock the mutex.
2567 */
2568static bool
2569iwl_mvm_choose_query_wakeup_reasons(struct iwl_mvm *mvm,
2570 struct ieee80211_vif *vif,
2571 struct iwl_d3_data *d3_data)
2572{
2573 lockdep_assert_held(&mvm->mutex);
2574
2575 /* if FW uses status notification, status shouldn't be NULL here */
2576 if (!d3_data->status) {
2577 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2578 u8 sta_id = mvm->net_detect ? IWL_MVM_INVALID_STA : mvmvif->ap_sta_id;
2579
2580 d3_data->status = iwl_mvm_send_wowlan_get_status(mvm, sta_id);
2581 }
2582
2583 if (mvm->net_detect) {
2584 iwl_mvm_query_netdetect_reasons(mvm, vif, d3_data);
2585 } else {
2586 bool keep = iwl_mvm_query_wakeup_reasons(mvm, vif,
2587 d3_data->status);
2588
2589#ifdef CONFIG_IWLWIFI_DEBUGFS
2590 if (keep)
2591 mvm->keep_vif = vif;
2592#endif
2593
2594 return keep;
2595 }
2596 return false;
2597}
2598
2599#define IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT (IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET | \
2600 IWL_WOWLAN_WAKEUP_BY_PATTERN | \
2601 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN |\
2602 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN_WILDCARD |\
2603 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN |\
2604 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN_WILDCARD)
2605
2606static int iwl_mvm_wowlan_store_wake_pkt(struct iwl_mvm *mvm,
2607 struct iwl_wowlan_wake_pkt_notif *notif,
2608 struct iwl_wowlan_status_data *status,
2609 u32 len)
2610{
2611 u32 data_size, packet_len = le32_to_cpu(notif->wake_packet_length);
2612
2613 if (len < sizeof(*notif)) {
2614 IWL_ERR(mvm, "Invalid WoWLAN wake packet notification!\n");
2615 return -EIO;
2616 }
2617
2618 if (WARN_ON(!status)) {
2619 IWL_ERR(mvm, "Got wake packet notification but wowlan status data is NULL\n");
2620 return -EIO;
2621 }
2622
2623 if (WARN_ON(!(status->wakeup_reasons &
2624 IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT))) {
2625 IWL_ERR(mvm, "Got wakeup packet but wakeup reason is %x\n",
2626 status->wakeup_reasons);
2627 return -EIO;
2628 }
2629
2630 data_size = len - offsetof(struct iwl_wowlan_wake_pkt_notif, wake_packet);
2631
2632 /* data_size got the padding from the notification, remove it. */
2633 if (packet_len < data_size)
2634 data_size = packet_len;
2635
2636 status->wake_packet = kmemdup(notif->wake_packet, data_size,
2637 GFP_ATOMIC);
2638
2639 if (!status->wake_packet)
2640 return -ENOMEM;
2641
2642 status->wake_packet_length = packet_len;
2643 status->wake_packet_bufsize = data_size;
2644
2645 return 0;
2646}
2647
2648static void iwl_mvm_nd_match_info_handler(struct iwl_mvm *mvm,
2649 struct iwl_d3_data *d3_data,
2650 struct iwl_scan_offload_match_info *notif,
2651 u32 len)
2652{
2653 struct iwl_wowlan_status_data *status = d3_data->status;
2654 struct ieee80211_vif *vif = iwl_mvm_get_bss_vif(mvm);
2655 struct iwl_mvm_nd_results *results = d3_data->nd_results;
2656 size_t i, matches_len = sizeof(struct iwl_scan_offload_profile_match) *
2657 iwl_umac_scan_get_max_profiles(mvm->fw);
2658
2659 if (IS_ERR_OR_NULL(vif))
2660 return;
2661
2662 if (len < sizeof(struct iwl_scan_offload_match_info)) {
2663 IWL_ERR(mvm, "Invalid scan match info notification\n");
2664 return;
2665 }
2666
2667 if (!mvm->net_detect) {
2668 IWL_ERR(mvm, "Unexpected scan match info notification\n");
2669 return;
2670 }
2671
2672 if (!status || status->wakeup_reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
2673 IWL_ERR(mvm,
2674 "Ignore scan match info notification: no reason\n");
2675 return;
2676 }
2677
2678#ifdef CONFIG_IWLWIFI_DEBUGFS
2679 mvm->last_netdetect_scans = le32_to_cpu(notif->n_scans_done);
2680#endif
2681
2682 results->matched_profiles = le32_to_cpu(notif->matched_profiles);
2683 IWL_INFO(mvm, "number of matched profiles=%u\n",
2684 results->matched_profiles);
2685
2686 if (results->matched_profiles) {
2687 memcpy(results->matches, notif->matches, matches_len);
2688 d3_data->nd_results_valid = TRUE;
2689 }
2690
2691 /* no scan should be active at this point */
2692 mvm->scan_status = 0;
2693 for (i = 0; i < mvm->max_scans; i++)
2694 mvm->scan_uid_status[i] = 0;
2695}
2696
2697static bool iwl_mvm_wait_d3_notif(struct iwl_notif_wait_data *notif_wait,
2698 struct iwl_rx_packet *pkt, void *data)
2699{
2700 struct iwl_mvm *mvm =
2701 container_of(notif_wait, struct iwl_mvm, notif_wait);
2702 struct iwl_d3_data *d3_data = data;
2703 u32 len;
2704 int ret;
2705
2706 switch (WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) {
2707 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION): {
2708 struct iwl_wowlan_info_notif *notif = (void *)pkt->data;
2709
2710 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_INFO) {
2711 /* We might get two notifications due to dual bss */
2712 IWL_DEBUG_WOWLAN(mvm,
2713 "Got additional wowlan info notification\n");
2714 break;
2715 }
2716
2717 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_INFO;
2718 len = iwl_rx_packet_payload_len(pkt);
2719 iwl_mvm_parse_wowlan_info_notif(mvm, notif, d3_data->status,
2720 len);
2721 if (d3_data->status &&
2722 d3_data->status->wakeup_reasons & IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT)
2723 /* We are supposed to get also wake packet notif */
2724 d3_data->notif_expected |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT;
2725
2726 break;
2727 }
2728 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION): {
2729 struct iwl_wowlan_wake_pkt_notif *notif = (void *)pkt->data;
2730
2731 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_WAKE_PKT) {
2732 /* We shouldn't get two wake packet notifications */
2733 IWL_ERR(mvm,
2734 "Got additional wowlan wake packet notification\n");
2735 } else {
2736 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT;
2737 len = iwl_rx_packet_payload_len(pkt);
2738 ret = iwl_mvm_wowlan_store_wake_pkt(mvm, notif,
2739 d3_data->status,
2740 len);
2741 if (ret)
2742 IWL_ERR(mvm,
2743 "Can't parse WOWLAN_WAKE_PKT_NOTIFICATION\n");
2744 }
2745
2746 break;
2747 }
2748 case WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF): {
2749 struct iwl_scan_offload_match_info *notif = (void *)pkt->data;
2750
2751 if (d3_data->notif_received & IWL_D3_ND_MATCH_INFO) {
2752 IWL_ERR(mvm,
2753 "Got additional netdetect match info\n");
2754 break;
2755 }
2756
2757 d3_data->notif_received |= IWL_D3_ND_MATCH_INFO;
2758
2759 /* explicitly set this in the 'expected' as well */
2760 d3_data->notif_expected |= IWL_D3_ND_MATCH_INFO;
2761
2762 len = iwl_rx_packet_payload_len(pkt);
2763 iwl_mvm_nd_match_info_handler(mvm, d3_data, notif, len);
2764 break;
2765 }
2766 case WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION): {
2767 struct iwl_mvm_d3_end_notif *notif = (void *)pkt->data;
2768
2769 d3_data->d3_end_flags = __le32_to_cpu(notif->flags);
2770 d3_data->notif_received |= IWL_D3_NOTIF_D3_END_NOTIF;
2771
2772 break;
2773 }
2774 default:
2775 WARN_ON(1);
2776 }
2777
2778 return d3_data->notif_received == d3_data->notif_expected;
2779}
2780
2781static int iwl_mvm_resume_firmware(struct iwl_mvm *mvm, bool test)
2782{
2783 int ret;
2784 enum iwl_d3_status d3_status;
2785 struct iwl_host_cmd cmd = {
2786 .id = D0I3_END_CMD,
2787 .flags = CMD_WANT_SKB | CMD_SEND_IN_D3,
2788 };
2789 bool reset = fw_has_capa(&mvm->fw->ucode_capa,
2790 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2791
2792 ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, !reset);
2793 if (ret)
2794 return ret;
2795
2796 if (d3_status != IWL_D3_STATUS_ALIVE) {
2797 IWL_INFO(mvm, "Device was reset during suspend\n");
2798 return -ENOENT;
2799 }
2800
2801 /*
2802 * We should trigger resume flow using command only for 22000 family
2803 * AX210 and above don't need the command since they have
2804 * the doorbell interrupt.
2805 */
2806 if (mvm->trans->trans_cfg->device_family <= IWL_DEVICE_FAMILY_22000 &&
2807 fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_D0I3_END_FIRST)) {
2808 ret = iwl_mvm_send_cmd(mvm, &cmd);
2809 if (ret < 0)
2810 IWL_ERR(mvm, "Failed to send D0I3_END_CMD first (%d)\n",
2811 ret);
2812 }
2813
2814 return ret;
2815}
2816
2817#define IWL_MVM_D3_NOTIF_TIMEOUT (HZ / 5)
2818
2819static int iwl_mvm_d3_notif_wait(struct iwl_mvm *mvm,
2820 struct iwl_d3_data *d3_data)
2821{
2822 static const u16 d3_resume_notif[] = {
2823 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION),
2824 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION),
2825 WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF),
2826 WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION)
2827 };
2828 struct iwl_notification_wait wait_d3_notif;
2829 int ret;
2830
2831 iwl_init_notification_wait(&mvm->notif_wait, &wait_d3_notif,
2832 d3_resume_notif, ARRAY_SIZE(d3_resume_notif),
2833 iwl_mvm_wait_d3_notif, d3_data);
2834
2835 ret = iwl_mvm_resume_firmware(mvm, d3_data->test);
2836 if (ret) {
2837 iwl_remove_notification(&mvm->notif_wait, &wait_d3_notif);
2838 return ret;
2839 }
2840
2841 return iwl_wait_notification(&mvm->notif_wait, &wait_d3_notif,
2842 IWL_MVM_D3_NOTIF_TIMEOUT);
2843}
2844
2845static inline bool iwl_mvm_d3_resume_notif_based(struct iwl_mvm *mvm)
2846{
2847 return iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
2848 WOWLAN_INFO_NOTIFICATION, 0) &&
2849 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
2850 WOWLAN_WAKE_PKT_NOTIFICATION, 0) &&
2851 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
2852 D3_END_NOTIFICATION, 0);
2853}
2854
2855static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test)
2856{
2857 struct ieee80211_vif *vif = NULL;
2858 int ret = 1;
2859 struct iwl_mvm_nd_results results = {};
2860 struct iwl_d3_data d3_data = {
2861 .test = test,
2862 .notif_expected =
2863 IWL_D3_NOTIF_WOWLAN_INFO |
2864 IWL_D3_NOTIF_D3_END_NOTIF,
2865 .nd_results_valid = false,
2866 .nd_results = &results,
2867 };
2868 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
2869 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2870 bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa,
2871 IWL_UCODE_TLV_CAPA_D0I3_END_FIRST);
2872 bool resume_notif_based = iwl_mvm_d3_resume_notif_based(mvm);
2873 bool keep = false;
2874
2875 mutex_lock(&mvm->mutex);
2876
2877 mvm->last_reset_or_resume_time_jiffies = jiffies;
2878
2879 /* get the BSS vif pointer again */
2880 vif = iwl_mvm_get_bss_vif(mvm);
2881 if (IS_ERR_OR_NULL(vif))
2882 goto err;
2883
2884 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
2885
2886 if (iwl_mvm_check_rt_status(mvm, vif)) {
2887 set_bit(STATUS_FW_ERROR, &mvm->trans->status);
2888 iwl_mvm_dump_nic_error_log(mvm);
2889 iwl_dbg_tlv_time_point(&mvm->fwrt,
2890 IWL_FW_INI_TIME_POINT_FW_ASSERT, NULL);
2891 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert,
2892 false, 0);
2893 ret = 1;
2894 goto err;
2895 }
2896
2897 if (resume_notif_based) {
2898 d3_data.status = kzalloc(sizeof(*d3_data.status), GFP_KERNEL);
2899 if (!d3_data.status) {
2900 IWL_ERR(mvm, "Failed to allocate wowlan status\n");
2901 ret = -ENOMEM;
2902 goto err;
2903 }
2904
2905 ret = iwl_mvm_d3_notif_wait(mvm, &d3_data);
2906 if (ret)
2907 goto err;
2908 } else {
2909 ret = iwl_mvm_resume_firmware(mvm, test);
2910 if (ret < 0)
2911 goto err;
2912 }
2913
2914 /* after the successful handshake, we're out of D3 */
2915 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
2916
2917 /* when reset is required we can't send these following commands */
2918 if (d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)
2919 goto query_wakeup_reasons;
2920
2921 /*
2922 * Query the current location and source from the D3 firmware so we
2923 * can play it back when we re-intiailize the D0 firmware
2924 */
2925 iwl_mvm_update_changed_regdom(mvm);
2926
2927 /* Re-configure PPAG settings */
2928 iwl_mvm_ppag_send_cmd(mvm);
2929
2930 if (!unified_image)
2931 /* Re-configure default SAR profile */
2932 iwl_mvm_sar_select_profile(mvm, 1, 1);
2933
2934 if (mvm->net_detect && unified_image) {
2935 /* If this is a non-unified image, we restart the FW,
2936 * so no need to stop the netdetect scan. If that
2937 * fails, continue and try to get the wake-up reasons,
2938 * but trigger a HW restart by keeping a failure code
2939 * in ret.
2940 */
2941 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT,
2942 false);
2943 }
2944
2945query_wakeup_reasons:
2946 keep = iwl_mvm_choose_query_wakeup_reasons(mvm, vif, &d3_data);
2947 /* has unlocked the mutex, so skip that */
2948 goto out;
2949
2950err:
2951 mutex_unlock(&mvm->mutex);
2952out:
2953 if (d3_data.status)
2954 kfree(d3_data.status->wake_packet);
2955 kfree(d3_data.status);
2956 iwl_mvm_free_nd(mvm);
2957
2958 if (!d3_data.test && !mvm->net_detect)
2959 ieee80211_iterate_active_interfaces_mtx(mvm->hw,
2960 IEEE80211_IFACE_ITER_NORMAL,
2961 iwl_mvm_d3_disconnect_iter,
2962 keep ? vif : NULL);
2963
2964 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
2965
2966 /* no need to reset the device in unified images, if successful */
2967 if (unified_image && !ret) {
2968 /* nothing else to do if we already sent D0I3_END_CMD */
2969 if (d0i3_first)
2970 return 0;
2971
2972 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
2973 D3_END_NOTIFICATION, 0)) {
2974 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL);
2975 if (!ret)
2976 return 0;
2977 } else if (!(d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)) {
2978 return 0;
2979 }
2980 }
2981
2982 /*
2983 * Reconfigure the device in one of the following cases:
2984 * 1. We are not using a unified image
2985 * 2. We are using a unified image but had an error while exiting D3
2986 */
2987 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
2988
2989 /* regardless of what happened, we're now out of D3 */
2990 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
2991
2992 return 1;
2993}
2994
2995int iwl_mvm_resume(struct ieee80211_hw *hw)
2996{
2997 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2998 int ret;
2999
3000 ret = __iwl_mvm_resume(mvm, false);
3001
3002 iwl_mvm_resume_tcm(mvm);
3003
3004 iwl_fw_runtime_resume(&mvm->fwrt);
3005
3006 return ret;
3007}
3008
3009void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled)
3010{
3011 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3012
3013 device_set_wakeup_enable(mvm->trans->dev, enabled);
3014}
3015
3016#ifdef CONFIG_IWLWIFI_DEBUGFS
3017static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file)
3018{
3019 struct iwl_mvm *mvm = inode->i_private;
3020 int err;
3021
3022 if (mvm->d3_test_active)
3023 return -EBUSY;
3024
3025 file->private_data = inode->i_private;
3026
3027 iwl_mvm_pause_tcm(mvm, true);
3028
3029 iwl_fw_runtime_suspend(&mvm->fwrt);
3030
3031 /* start pseudo D3 */
3032 rtnl_lock();
3033 wiphy_lock(mvm->hw->wiphy);
3034 err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true);
3035 wiphy_unlock(mvm->hw->wiphy);
3036 rtnl_unlock();
3037 if (err > 0)
3038 err = -EINVAL;
3039 if (err)
3040 return err;
3041
3042 mvm->d3_test_active = true;
3043 mvm->keep_vif = NULL;
3044 return 0;
3045}
3046
3047static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf,
3048 size_t count, loff_t *ppos)
3049{
3050 struct iwl_mvm *mvm = file->private_data;
3051 u32 pme_asserted;
3052
3053 while (true) {
3054 /* read pme_ptr if available */
3055 if (mvm->d3_test_pme_ptr) {
3056 pme_asserted = iwl_trans_read_mem32(mvm->trans,
3057 mvm->d3_test_pme_ptr);
3058 if (pme_asserted)
3059 break;
3060 }
3061
3062 if (msleep_interruptible(100))
3063 break;
3064 }
3065
3066 return 0;
3067}
3068
3069static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac,
3070 struct ieee80211_vif *vif)
3071{
3072 /* skip the one we keep connection on */
3073 if (_data == vif)
3074 return;
3075
3076 if (vif->type == NL80211_IFTYPE_STATION)
3077 ieee80211_connection_loss(vif);
3078}
3079
3080static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file)
3081{
3082 struct iwl_mvm *mvm = inode->i_private;
3083 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
3084 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
3085
3086 mvm->d3_test_active = false;
3087
3088 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
3089
3090 rtnl_lock();
3091 wiphy_lock(mvm->hw->wiphy);
3092 __iwl_mvm_resume(mvm, true);
3093 wiphy_unlock(mvm->hw->wiphy);
3094 rtnl_unlock();
3095
3096 iwl_mvm_resume_tcm(mvm);
3097
3098 iwl_fw_runtime_resume(&mvm->fwrt);
3099
3100 iwl_abort_notification_waits(&mvm->notif_wait);
3101 if (!unified_image) {
3102 int remaining_time = 10;
3103
3104 ieee80211_restart_hw(mvm->hw);
3105
3106 /* wait for restart and disconnect all interfaces */
3107 while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
3108 remaining_time > 0) {
3109 remaining_time--;
3110 msleep(1000);
3111 }
3112
3113 if (remaining_time == 0)
3114 IWL_ERR(mvm, "Timed out waiting for HW restart!\n");
3115 }
3116
3117 ieee80211_iterate_active_interfaces_atomic(
3118 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
3119 iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif);
3120
3121 return 0;
3122}
3123
3124const struct file_operations iwl_dbgfs_d3_test_ops = {
3125 .llseek = no_llseek,
3126 .open = iwl_mvm_d3_test_open,
3127 .read = iwl_mvm_d3_test_read,
3128 .release = iwl_mvm_d3_test_release,
3129};
3130#endif