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1// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2/*
3 * Copyright (C) 2012-2014, 2018-2023 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->deflink.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 =
497 cpu_to_le32(mvmvif->deflink.ap_sta_id);
498 } else {
499 /* ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN */
500 size = sizeof(data.rsc_tsc->params);
501 }
502
503 ieee80211_iter_keys(mvm->hw, vif,
504 iwl_mvm_wowlan_get_rsc_tsc_data,
505 &data);
506
507 if (data.have_rsc_tsc)
508 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM,
509 CMD_ASYNC, size,
510 data.rsc_tsc);
511 else
512 ret = 0;
513 kfree(data.rsc_tsc);
514 } else {
515 ret = 0;
516 WARN_ON_ONCE(1);
517 }
518
519 return ret;
520}
521
522struct wowlan_key_tkip_data {
523 struct iwl_wowlan_tkip_params_cmd tkip;
524 bool have_tkip_keys;
525};
526
527static void iwl_mvm_wowlan_get_tkip_data(struct ieee80211_hw *hw,
528 struct ieee80211_vif *vif,
529 struct ieee80211_sta *sta,
530 struct ieee80211_key_conf *key,
531 void *_data)
532{
533 struct wowlan_key_tkip_data *data = _data;
534 struct iwl_p1k_cache *rx_p1ks;
535 u8 *rx_mic_key;
536 struct ieee80211_key_seq seq;
537 u32 cur_rx_iv32 = 0;
538 u16 p1k[IWL_P1K_SIZE];
539 int i;
540
541 switch (key->cipher) {
542 default:
543 break;
544 case WLAN_CIPHER_SUITE_TKIP:
545 if (sta) {
546 u64 pn64;
547
548 rx_p1ks = data->tkip.rx_uni;
549
550 pn64 = atomic64_read(&key->tx_pn);
551
552 ieee80211_get_tkip_p1k_iv(key, TKIP_PN_TO_IV32(pn64),
553 p1k);
554 iwl_mvm_convert_p1k(p1k, data->tkip.tx.p1k);
555
556 memcpy(data->tkip.mic_keys.tx,
557 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
558 IWL_MIC_KEY_SIZE);
559
560 rx_mic_key = data->tkip.mic_keys.rx_unicast;
561 } else {
562 rx_p1ks = data->tkip.rx_multi;
563 rx_mic_key = data->tkip.mic_keys.rx_mcast;
564 }
565
566 for (i = 0; i < IWL_NUM_RSC; i++) {
567 ieee80211_get_key_rx_seq(key, i, &seq);
568 /* wrapping isn't allowed, AP must rekey */
569 if (seq.tkip.iv32 > cur_rx_iv32)
570 cur_rx_iv32 = seq.tkip.iv32;
571 }
572
573 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
574 cur_rx_iv32, p1k);
575 iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k);
576 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
577 cur_rx_iv32 + 1, p1k);
578 iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k);
579
580 memcpy(rx_mic_key,
581 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
582 IWL_MIC_KEY_SIZE);
583
584 data->have_tkip_keys = true;
585 break;
586 }
587}
588
589struct wowlan_key_gtk_type_iter {
590 struct iwl_wowlan_kek_kck_material_cmd_v4 *kek_kck_cmd;
591};
592
593static void iwl_mvm_wowlan_gtk_type_iter(struct ieee80211_hw *hw,
594 struct ieee80211_vif *vif,
595 struct ieee80211_sta *sta,
596 struct ieee80211_key_conf *key,
597 void *_data)
598{
599 struct wowlan_key_gtk_type_iter *data = _data;
600
601 switch (key->cipher) {
602 default:
603 return;
604 case WLAN_CIPHER_SUITE_TKIP:
605 if (!sta)
606 data->kek_kck_cmd->gtk_cipher =
607 cpu_to_le32(STA_KEY_FLG_TKIP);
608 return;
609 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
610 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
611 data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_GCMP);
612 return;
613 case WLAN_CIPHER_SUITE_AES_CMAC:
614 data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_CCM);
615 return;
616 case WLAN_CIPHER_SUITE_CCMP:
617 if (!sta)
618 data->kek_kck_cmd->gtk_cipher =
619 cpu_to_le32(STA_KEY_FLG_CCM);
620 return;
621 case WLAN_CIPHER_SUITE_GCMP:
622 case WLAN_CIPHER_SUITE_GCMP_256:
623 if (!sta)
624 data->kek_kck_cmd->gtk_cipher =
625 cpu_to_le32(STA_KEY_FLG_GCMP);
626 return;
627 }
628}
629
630static int iwl_mvm_send_patterns_v1(struct iwl_mvm *mvm,
631 struct cfg80211_wowlan *wowlan)
632{
633 struct iwl_wowlan_patterns_cmd_v1 *pattern_cmd;
634 struct iwl_host_cmd cmd = {
635 .id = WOWLAN_PATTERNS,
636 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
637 };
638 int i, err;
639
640 if (!wowlan->n_patterns)
641 return 0;
642
643 cmd.len[0] = struct_size(pattern_cmd, patterns, wowlan->n_patterns);
644
645 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
646 if (!pattern_cmd)
647 return -ENOMEM;
648
649 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
650
651 for (i = 0; i < wowlan->n_patterns; i++) {
652 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
653
654 memcpy(&pattern_cmd->patterns[i].mask,
655 wowlan->patterns[i].mask, mask_len);
656 memcpy(&pattern_cmd->patterns[i].pattern,
657 wowlan->patterns[i].pattern,
658 wowlan->patterns[i].pattern_len);
659 pattern_cmd->patterns[i].mask_size = mask_len;
660 pattern_cmd->patterns[i].pattern_size =
661 wowlan->patterns[i].pattern_len;
662 }
663
664 cmd.data[0] = pattern_cmd;
665 err = iwl_mvm_send_cmd(mvm, &cmd);
666 kfree(pattern_cmd);
667 return err;
668}
669
670static int iwl_mvm_send_patterns(struct iwl_mvm *mvm,
671 struct ieee80211_vif *vif,
672 struct cfg80211_wowlan *wowlan)
673{
674 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
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 = mvmvif->deflink.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
720static 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;
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 chains_static = ctx->rx_chains_static;
748 chains_dynamic = ctx->rx_chains_dynamic;
749 rcu_read_unlock();
750
751 ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->deflink.phy_ctxt, &chandef,
752 chains_static, chains_dynamic);
753 if (ret)
754 return ret;
755
756 /* add back the MAC */
757 mvmvif->uploaded = false;
758
759 if (WARN_ON(!vif->cfg.assoc))
760 return -EINVAL;
761
762 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
763 if (ret)
764 return ret;
765
766 /* add back binding - XXX refactor? */
767 binding_cmd.id_and_color =
768 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id,
769 mvmvif->deflink.phy_ctxt->color));
770 binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD);
771 binding_cmd.phy =
772 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id,
773 mvmvif->deflink.phy_ctxt->color));
774 binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
775 mvmvif->color));
776 for (i = 1; i < MAX_MACS_IN_BINDING; i++)
777 binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID);
778
779 status = 0;
780 ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD,
781 IWL_BINDING_CMD_SIZE_V1, &binding_cmd,
782 &status);
783 if (ret) {
784 IWL_ERR(mvm, "Failed to add binding: %d\n", ret);
785 return ret;
786 }
787
788 if (status) {
789 IWL_ERR(mvm, "Binding command failed: %u\n", status);
790 return -EIO;
791 }
792
793 ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false, 0);
794 if (ret)
795 return ret;
796 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->deflink.ap_sta_id],
797 ap_sta);
798
799 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
800 if (ret)
801 return ret;
802
803 /* and some quota */
804 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, 0);
805 quota->id_and_color =
806 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id,
807 mvmvif->deflink.phy_ctxt->color));
808 quota->quota = cpu_to_le32(IWL_MVM_MAX_QUOTA);
809 quota->max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA);
810
811 for (i = 1; i < MAX_BINDINGS; i++) {
812 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, i);
813 quota->id_and_color = cpu_to_le32(FW_CTXT_INVALID);
814 }
815
816 ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0,
817 iwl_mvm_quota_cmd_size(mvm), "a_cmd);
818 if (ret)
819 IWL_ERR(mvm, "Failed to send quota: %d\n", ret);
820
821 if (iwl_mvm_is_lar_supported(mvm) && iwl_mvm_init_fw_regd(mvm, false))
822 IWL_ERR(mvm, "Failed to initialize D3 LAR information\n");
823
824 return 0;
825}
826
827static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm,
828 struct ieee80211_vif *vif)
829{
830 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
831 struct iwl_nonqos_seq_query_cmd query_cmd = {
832 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET),
833 .mac_id_n_color =
834 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
835 mvmvif->color)),
836 };
837 struct iwl_host_cmd cmd = {
838 .id = NON_QOS_TX_COUNTER_CMD,
839 .flags = CMD_WANT_SKB,
840 };
841 int err;
842 u32 size;
843
844 cmd.data[0] = &query_cmd;
845 cmd.len[0] = sizeof(query_cmd);
846
847 err = iwl_mvm_send_cmd(mvm, &cmd);
848 if (err)
849 return err;
850
851 size = iwl_rx_packet_payload_len(cmd.resp_pkt);
852 if (size < sizeof(__le16)) {
853 err = -EINVAL;
854 } else {
855 err = le16_to_cpup((__le16 *)cmd.resp_pkt->data);
856 /* firmware returns next, not last-used seqno */
857 err = (u16) (err - 0x10);
858 }
859
860 iwl_free_resp(&cmd);
861 return err;
862}
863
864void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
865{
866 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
867 struct iwl_nonqos_seq_query_cmd query_cmd = {
868 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET),
869 .mac_id_n_color =
870 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
871 mvmvif->color)),
872 .value = cpu_to_le16(mvmvif->seqno),
873 };
874
875 /* return if called during restart, not resume from D3 */
876 if (!mvmvif->seqno_valid)
877 return;
878
879 mvmvif->seqno_valid = false;
880
881 if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0,
882 sizeof(query_cmd), &query_cmd))
883 IWL_ERR(mvm, "failed to set non-QoS seqno\n");
884}
885
886static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm)
887{
888 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
889
890 iwl_mvm_stop_device(mvm);
891 /*
892 * Set the HW restart bit -- this is mostly true as we're
893 * going to load new firmware and reprogram that, though
894 * the reprogramming is going to be manual to avoid adding
895 * all the MACs that aren't support.
896 * We don't have to clear up everything though because the
897 * reprogramming is manual. When we resume, we'll actually
898 * go through a proper restart sequence again to switch
899 * back to the runtime firmware image.
900 */
901 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
902
903 /* the fw is reset, so all the keys are cleared */
904 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
905
906 mvm->ptk_ivlen = 0;
907 mvm->ptk_icvlen = 0;
908 mvm->ptk_ivlen = 0;
909 mvm->ptk_icvlen = 0;
910
911 return iwl_mvm_load_d3_fw(mvm);
912}
913
914static int
915iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm,
916 struct cfg80211_wowlan *wowlan,
917 struct iwl_wowlan_config_cmd *wowlan_config_cmd,
918 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
919 struct ieee80211_sta *ap_sta)
920{
921 struct iwl_mvm_sta *mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
922
923 /* TODO: wowlan_config_cmd->wowlan_ba_teardown_tids */
924
925 wowlan_config_cmd->is_11n_connection =
926 ap_sta->deflink.ht_cap.ht_supported;
927 wowlan_config_cmd->flags = ENABLE_L3_FILTERING |
928 ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING;
929
930 if (iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_CONFIGURATION, 0) < 6) {
931 /* Query the last used seqno and set it */
932 int ret = iwl_mvm_get_last_nonqos_seq(mvm, vif);
933
934 if (ret < 0)
935 return ret;
936
937 wowlan_config_cmd->non_qos_seq = cpu_to_le16(ret);
938 }
939
940 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, wowlan_config_cmd);
941
942 if (wowlan->disconnect)
943 wowlan_config_cmd->wakeup_filter |=
944 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
945 IWL_WOWLAN_WAKEUP_LINK_CHANGE);
946 if (wowlan->magic_pkt)
947 wowlan_config_cmd->wakeup_filter |=
948 cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET);
949 if (wowlan->gtk_rekey_failure)
950 wowlan_config_cmd->wakeup_filter |=
951 cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
952 if (wowlan->eap_identity_req)
953 wowlan_config_cmd->wakeup_filter |=
954 cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ);
955 if (wowlan->four_way_handshake)
956 wowlan_config_cmd->wakeup_filter |=
957 cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
958 if (wowlan->n_patterns)
959 wowlan_config_cmd->wakeup_filter |=
960 cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH);
961
962 if (wowlan->rfkill_release)
963 wowlan_config_cmd->wakeup_filter |=
964 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
965
966 if (wowlan->tcp) {
967 /*
968 * Set the "link change" (really "link lost") flag as well
969 * since that implies losing the TCP connection.
970 */
971 wowlan_config_cmd->wakeup_filter |=
972 cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS |
973 IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE |
974 IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET |
975 IWL_WOWLAN_WAKEUP_LINK_CHANGE);
976 }
977
978 if (wowlan->any) {
979 wowlan_config_cmd->wakeup_filter |=
980 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
981 IWL_WOWLAN_WAKEUP_LINK_CHANGE |
982 IWL_WOWLAN_WAKEUP_RX_FRAME |
983 IWL_WOWLAN_WAKEUP_BCN_FILTERING);
984 }
985
986 return 0;
987}
988
989static int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm,
990 struct ieee80211_vif *vif)
991{
992 bool unified = fw_has_capa(&mvm->fw->ucode_capa,
993 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
994 struct wowlan_key_reprogram_data key_data = {};
995 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
996 int ret;
997 u8 cmd_ver;
998 size_t cmd_size;
999
1000 if (!unified) {
1001 /*
1002 * if we have to configure keys, call ieee80211_iter_keys(),
1003 * as we need non-atomic context in order to take the
1004 * required locks.
1005 */
1006 /*
1007 * Note that currently we don't use CMD_ASYNC in the iterator.
1008 * In case of key_data.configure_keys, all the configured
1009 * commands are SYNC, and iwl_mvm_wowlan_program_keys() will
1010 * take care of locking/unlocking mvm->mutex.
1011 */
1012 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_program_keys,
1013 &key_data);
1014
1015 if (key_data.error)
1016 return -EIO;
1017 }
1018
1019 ret = iwl_mvm_wowlan_config_rsc_tsc(mvm, vif);
1020 if (ret)
1021 return ret;
1022
1023 if (!fw_has_api(&mvm->fw->ucode_capa,
1024 IWL_UCODE_TLV_API_TKIP_MIC_KEYS)) {
1025 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TKIP_PARAM,
1026 IWL_FW_CMD_VER_UNKNOWN);
1027 struct wowlan_key_tkip_data tkip_data = {};
1028 int size;
1029
1030 if (ver == 2) {
1031 size = sizeof(tkip_data.tkip);
1032 tkip_data.tkip.sta_id =
1033 cpu_to_le32(mvmvif->deflink.ap_sta_id);
1034 } else if (ver == 1 || ver == IWL_FW_CMD_VER_UNKNOWN) {
1035 size = sizeof(struct iwl_wowlan_tkip_params_cmd_ver_1);
1036 } else {
1037 WARN_ON_ONCE(1);
1038 return -EINVAL;
1039 }
1040
1041 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_get_tkip_data,
1042 &tkip_data);
1043
1044 if (tkip_data.have_tkip_keys) {
1045 /* send relevant data according to CMD version */
1046 ret = iwl_mvm_send_cmd_pdu(mvm,
1047 WOWLAN_TKIP_PARAM,
1048 CMD_ASYNC, size,
1049 &tkip_data.tkip);
1050 if (ret)
1051 return ret;
1052 }
1053 }
1054
1055 /* configure rekey data only if offloaded rekey is supported (d3) */
1056 if (mvmvif->rekey_data.valid) {
1057 struct iwl_wowlan_kek_kck_material_cmd_v4 kek_kck_cmd = {};
1058 struct iwl_wowlan_kek_kck_material_cmd_v4 *_kek_kck_cmd =
1059 &kek_kck_cmd;
1060 struct wowlan_key_gtk_type_iter gtk_type_data = {
1061 .kek_kck_cmd = _kek_kck_cmd,
1062 };
1063
1064 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,
1065 WOWLAN_KEK_KCK_MATERIAL,
1066 IWL_FW_CMD_VER_UNKNOWN);
1067 if (WARN_ON(cmd_ver != 2 && cmd_ver != 3 && cmd_ver != 4 &&
1068 cmd_ver != IWL_FW_CMD_VER_UNKNOWN))
1069 return -EINVAL;
1070
1071 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_gtk_type_iter,
1072 >k_type_data);
1073
1074 memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck,
1075 mvmvif->rekey_data.kck_len);
1076 kek_kck_cmd.kck_len = cpu_to_le16(mvmvif->rekey_data.kck_len);
1077 memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek,
1078 mvmvif->rekey_data.kek_len);
1079 kek_kck_cmd.kek_len = cpu_to_le16(mvmvif->rekey_data.kek_len);
1080 kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr;
1081 kek_kck_cmd.akm = cpu_to_le32(mvmvif->rekey_data.akm);
1082 kek_kck_cmd.sta_id = cpu_to_le32(mvmvif->deflink.ap_sta_id);
1083
1084 if (cmd_ver == 4) {
1085 cmd_size = sizeof(struct iwl_wowlan_kek_kck_material_cmd_v4);
1086 } else {
1087 if (cmd_ver == 3)
1088 cmd_size =
1089 sizeof(struct iwl_wowlan_kek_kck_material_cmd_v3);
1090 else
1091 cmd_size =
1092 sizeof(struct iwl_wowlan_kek_kck_material_cmd_v2);
1093 /* skip the sta_id at the beginning */
1094 _kek_kck_cmd = (void *)
1095 ((u8 *)_kek_kck_cmd + sizeof(kek_kck_cmd.sta_id));
1096 }
1097
1098 IWL_DEBUG_WOWLAN(mvm, "setting akm %d\n",
1099 mvmvif->rekey_data.akm);
1100
1101 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_KEK_KCK_MATERIAL,
1102 CMD_ASYNC, cmd_size, _kek_kck_cmd);
1103 if (ret)
1104 return ret;
1105 }
1106
1107 return 0;
1108}
1109
1110static int
1111iwl_mvm_wowlan_config(struct iwl_mvm *mvm,
1112 struct cfg80211_wowlan *wowlan,
1113 struct iwl_wowlan_config_cmd *wowlan_config_cmd,
1114 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
1115 struct ieee80211_sta *ap_sta)
1116{
1117 int ret;
1118 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1119 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1120
1121 mvm->offload_tid = wowlan_config_cmd->offloading_tid;
1122
1123 if (!unified_image) {
1124 ret = iwl_mvm_switch_to_d3(mvm);
1125 if (ret)
1126 return ret;
1127
1128 ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta);
1129 if (ret)
1130 return ret;
1131 }
1132
1133 ret = iwl_mvm_wowlan_config_key_params(mvm, vif);
1134 if (ret)
1135 return ret;
1136
1137 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0,
1138 sizeof(*wowlan_config_cmd),
1139 wowlan_config_cmd);
1140 if (ret)
1141 return ret;
1142
1143 if (fw_has_api(&mvm->fw->ucode_capa,
1144 IWL_UCODE_TLV_API_WOWLAN_TCP_SYN_WAKE))
1145 ret = iwl_mvm_send_patterns(mvm, vif, wowlan);
1146 else
1147 ret = iwl_mvm_send_patterns_v1(mvm, wowlan);
1148 if (ret)
1149 return ret;
1150
1151 return iwl_mvm_send_proto_offload(mvm, vif, false, true, 0);
1152}
1153
1154static int
1155iwl_mvm_netdetect_config(struct iwl_mvm *mvm,
1156 struct cfg80211_wowlan *wowlan,
1157 struct cfg80211_sched_scan_request *nd_config,
1158 struct ieee80211_vif *vif)
1159{
1160 int ret;
1161 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1162 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1163
1164 if (!unified_image) {
1165 ret = iwl_mvm_switch_to_d3(mvm);
1166 if (ret)
1167 return ret;
1168 } else {
1169 /* In theory, we wouldn't have to stop a running sched
1170 * scan in order to start another one (for
1171 * net-detect). But in practice this doesn't seem to
1172 * work properly, so stop any running sched_scan now.
1173 */
1174 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
1175 if (ret)
1176 return ret;
1177 }
1178
1179 ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies,
1180 IWL_MVM_SCAN_NETDETECT);
1181 if (ret)
1182 return ret;
1183
1184 if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels))
1185 return -EBUSY;
1186
1187 /* save the sched scan matchsets... */
1188 if (nd_config->n_match_sets) {
1189 mvm->nd_match_sets = kmemdup(nd_config->match_sets,
1190 sizeof(*nd_config->match_sets) *
1191 nd_config->n_match_sets,
1192 GFP_KERNEL);
1193 if (mvm->nd_match_sets)
1194 mvm->n_nd_match_sets = nd_config->n_match_sets;
1195 }
1196
1197 /* ...and the sched scan channels for later reporting */
1198 mvm->nd_channels = kmemdup(nd_config->channels,
1199 sizeof(*nd_config->channels) *
1200 nd_config->n_channels,
1201 GFP_KERNEL);
1202 if (mvm->nd_channels)
1203 mvm->n_nd_channels = nd_config->n_channels;
1204
1205 return 0;
1206}
1207
1208static void iwl_mvm_free_nd(struct iwl_mvm *mvm)
1209{
1210 kfree(mvm->nd_match_sets);
1211 mvm->nd_match_sets = NULL;
1212 mvm->n_nd_match_sets = 0;
1213 kfree(mvm->nd_channels);
1214 mvm->nd_channels = NULL;
1215 mvm->n_nd_channels = 0;
1216}
1217
1218static int __iwl_mvm_suspend(struct ieee80211_hw *hw,
1219 struct cfg80211_wowlan *wowlan,
1220 bool test)
1221{
1222 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1223 struct ieee80211_vif *vif = NULL;
1224 struct iwl_mvm_vif *mvmvif = NULL;
1225 struct ieee80211_sta *ap_sta = NULL;
1226 struct iwl_d3_manager_config d3_cfg_cmd_data = {
1227 /*
1228 * Program the minimum sleep time to 10 seconds, as many
1229 * platforms have issues processing a wakeup signal while
1230 * still being in the process of suspending.
1231 */
1232 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000),
1233 };
1234 struct iwl_host_cmd d3_cfg_cmd = {
1235 .id = D3_CONFIG_CMD,
1236 .flags = CMD_WANT_SKB | CMD_SEND_IN_D3,
1237 .data[0] = &d3_cfg_cmd_data,
1238 .len[0] = sizeof(d3_cfg_cmd_data),
1239 };
1240 int ret;
1241 int len __maybe_unused;
1242 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1243 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1244
1245 if (!wowlan) {
1246 /*
1247 * mac80211 shouldn't get here, but for D3 test
1248 * it doesn't warrant a warning
1249 */
1250 WARN_ON(!test);
1251 return -EINVAL;
1252 }
1253
1254 mutex_lock(&mvm->mutex);
1255
1256 set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
1257
1258 synchronize_net();
1259
1260 vif = iwl_mvm_get_bss_vif(mvm);
1261 if (IS_ERR_OR_NULL(vif)) {
1262 ret = 1;
1263 goto out_noreset;
1264 }
1265
1266 mvmvif = iwl_mvm_vif_from_mac80211(vif);
1267
1268 if (mvmvif->deflink.ap_sta_id == IWL_MVM_INVALID_STA) {
1269 /* if we're not associated, this must be netdetect */
1270 if (!wowlan->nd_config) {
1271 ret = 1;
1272 goto out_noreset;
1273 }
1274
1275 ret = iwl_mvm_netdetect_config(
1276 mvm, wowlan, wowlan->nd_config, vif);
1277 if (ret)
1278 goto out;
1279
1280 mvm->net_detect = true;
1281 } else {
1282 struct iwl_wowlan_config_cmd wowlan_config_cmd = {
1283 .offloading_tid = 0,
1284 };
1285
1286 wowlan_config_cmd.sta_id = mvmvif->deflink.ap_sta_id;
1287
1288 ap_sta = rcu_dereference_protected(
1289 mvm->fw_id_to_mac_id[mvmvif->deflink.ap_sta_id],
1290 lockdep_is_held(&mvm->mutex));
1291 if (IS_ERR_OR_NULL(ap_sta)) {
1292 ret = -EINVAL;
1293 goto out_noreset;
1294 }
1295
1296 ret = iwl_mvm_sta_ensure_queue(
1297 mvm, ap_sta->txq[wowlan_config_cmd.offloading_tid]);
1298 if (ret)
1299 goto out_noreset;
1300
1301 ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1302 vif, mvmvif, ap_sta);
1303 if (ret)
1304 goto out_noreset;
1305 ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1306 vif, mvmvif, ap_sta);
1307 if (ret)
1308 goto out;
1309
1310 mvm->net_detect = false;
1311 }
1312
1313 ret = iwl_mvm_power_update_device(mvm);
1314 if (ret)
1315 goto out;
1316
1317 ret = iwl_mvm_power_update_mac(mvm);
1318 if (ret)
1319 goto out;
1320
1321#ifdef CONFIG_IWLWIFI_DEBUGFS
1322 if (mvm->d3_wake_sysassert)
1323 d3_cfg_cmd_data.wakeup_flags |=
1324 cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR);
1325#endif
1326
1327 /*
1328 * Prior to 9000 device family the driver needs to stop the dbg
1329 * recording before entering D3. In later devices the FW stops the
1330 * recording automatically.
1331 */
1332 if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_9000)
1333 iwl_fw_dbg_stop_restart_recording(&mvm->fwrt, NULL, true);
1334
1335 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_D3;
1336
1337 /* must be last -- this switches firmware state */
1338 ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd);
1339 if (ret)
1340 goto out;
1341#ifdef CONFIG_IWLWIFI_DEBUGFS
1342 len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt);
1343 if (len >= sizeof(u32)) {
1344 mvm->d3_test_pme_ptr =
1345 le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data);
1346 }
1347#endif
1348 iwl_free_resp(&d3_cfg_cmd);
1349
1350 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1351
1352 ret = iwl_trans_d3_suspend(mvm->trans, test, !unified_image);
1353 out:
1354 if (ret < 0) {
1355 iwl_mvm_free_nd(mvm);
1356
1357 if (!unified_image) {
1358 if (mvm->fw_restart > 0) {
1359 mvm->fw_restart--;
1360 ieee80211_restart_hw(mvm->hw);
1361 }
1362 }
1363
1364 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
1365 }
1366 out_noreset:
1367 mutex_unlock(&mvm->mutex);
1368
1369 return ret;
1370}
1371
1372int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
1373{
1374 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1375
1376 iwl_mvm_pause_tcm(mvm, true);
1377
1378 iwl_fw_runtime_suspend(&mvm->fwrt);
1379
1380 return __iwl_mvm_suspend(hw, wowlan, false);
1381}
1382
1383struct iwl_multicast_key_data {
1384 u8 key[WOWLAN_KEY_MAX_SIZE];
1385 u8 len;
1386 u8 flags;
1387 u8 id;
1388 u8 ipn[6];
1389};
1390
1391/* converted data from the different status responses */
1392struct iwl_wowlan_status_data {
1393 u64 replay_ctr;
1394 u32 num_of_gtk_rekeys;
1395 u32 received_beacons;
1396 u32 wakeup_reasons;
1397 u32 wake_packet_length;
1398 u32 wake_packet_bufsize;
1399 u16 pattern_number;
1400 u16 non_qos_seq_ctr;
1401 u16 qos_seq_ctr[8];
1402 u8 tid_tear_down;
1403
1404 struct {
1405 /* including RX MIC key for TKIP */
1406 u8 key[WOWLAN_KEY_MAX_SIZE];
1407 u8 len;
1408 u8 flags;
1409 u8 id;
1410 } gtk[WOWLAN_GTK_KEYS_NUM];
1411
1412 struct {
1413 /*
1414 * We store both the TKIP and AES representations
1415 * coming from the firmware because we decode the
1416 * data from there before we iterate the keys and
1417 * know which one we need.
1418 */
1419 struct {
1420 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT];
1421 } tkip, aes;
1422
1423 /*
1424 * We use -1 for when we have valid data but don't know
1425 * the key ID from firmware, and thus it needs to be
1426 * installed with the last key (depending on rekeying).
1427 */
1428 s8 key_id;
1429 bool valid;
1430 } gtk_seq[2];
1431
1432 struct {
1433 /* Same as above */
1434 struct {
1435 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT];
1436 u64 tx_pn;
1437 } tkip, aes;
1438 } ptk;
1439
1440 struct iwl_multicast_key_data igtk;
1441 struct iwl_multicast_key_data bigtk[WOWLAN_BIGTK_KEYS_NUM];
1442
1443 u8 *wake_packet;
1444};
1445
1446static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm,
1447 struct ieee80211_vif *vif,
1448 struct iwl_wowlan_status_data *status)
1449{
1450 struct sk_buff *pkt = NULL;
1451 struct cfg80211_wowlan_wakeup wakeup = {
1452 .pattern_idx = -1,
1453 };
1454 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
1455 u32 reasons = status->wakeup_reasons;
1456
1457 if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
1458 wakeup_report = NULL;
1459 goto report;
1460 }
1461
1462 pm_wakeup_event(mvm->dev, 0);
1463
1464 if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET)
1465 wakeup.magic_pkt = true;
1466
1467 if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN)
1468 wakeup.pattern_idx =
1469 status->pattern_number;
1470
1471 if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1472 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH))
1473 wakeup.disconnect = true;
1474
1475 if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)
1476 wakeup.gtk_rekey_failure = true;
1477
1478 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
1479 wakeup.rfkill_release = true;
1480
1481 if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST)
1482 wakeup.eap_identity_req = true;
1483
1484 if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE)
1485 wakeup.four_way_handshake = true;
1486
1487 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS)
1488 wakeup.tcp_connlost = true;
1489
1490 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE)
1491 wakeup.tcp_nomoretokens = true;
1492
1493 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET)
1494 wakeup.tcp_match = true;
1495
1496 if (status->wake_packet) {
1497 int pktsize = status->wake_packet_bufsize;
1498 int pktlen = status->wake_packet_length;
1499 const u8 *pktdata = status->wake_packet;
1500 const struct ieee80211_hdr *hdr = (const void *)pktdata;
1501 int truncated = pktlen - pktsize;
1502
1503 /* this would be a firmware bug */
1504 if (WARN_ON_ONCE(truncated < 0))
1505 truncated = 0;
1506
1507 if (ieee80211_is_data(hdr->frame_control)) {
1508 int hdrlen = ieee80211_hdrlen(hdr->frame_control);
1509 int ivlen = 0, icvlen = 4; /* also FCS */
1510
1511 pkt = alloc_skb(pktsize, GFP_KERNEL);
1512 if (!pkt)
1513 goto report;
1514
1515 skb_put_data(pkt, pktdata, hdrlen);
1516 pktdata += hdrlen;
1517 pktsize -= hdrlen;
1518
1519 if (ieee80211_has_protected(hdr->frame_control)) {
1520 /*
1521 * This is unlocked and using gtk_i(c)vlen,
1522 * but since everything is under RTNL still
1523 * that's not really a problem - changing
1524 * it would be difficult.
1525 */
1526 if (is_multicast_ether_addr(hdr->addr1)) {
1527 ivlen = mvm->gtk_ivlen;
1528 icvlen += mvm->gtk_icvlen;
1529 } else {
1530 ivlen = mvm->ptk_ivlen;
1531 icvlen += mvm->ptk_icvlen;
1532 }
1533 }
1534
1535 /* if truncated, FCS/ICV is (partially) gone */
1536 if (truncated >= icvlen) {
1537 icvlen = 0;
1538 truncated -= icvlen;
1539 } else {
1540 icvlen -= truncated;
1541 truncated = 0;
1542 }
1543
1544 pktsize -= ivlen + icvlen;
1545 pktdata += ivlen;
1546
1547 skb_put_data(pkt, pktdata, pktsize);
1548
1549 if (ieee80211_data_to_8023(pkt, vif->addr, vif->type))
1550 goto report;
1551 wakeup.packet = pkt->data;
1552 wakeup.packet_present_len = pkt->len;
1553 wakeup.packet_len = pkt->len - truncated;
1554 wakeup.packet_80211 = false;
1555 } else {
1556 int fcslen = 4;
1557
1558 if (truncated >= 4) {
1559 truncated -= 4;
1560 fcslen = 0;
1561 } else {
1562 fcslen -= truncated;
1563 truncated = 0;
1564 }
1565 pktsize -= fcslen;
1566 wakeup.packet = status->wake_packet;
1567 wakeup.packet_present_len = pktsize;
1568 wakeup.packet_len = pktlen - truncated;
1569 wakeup.packet_80211 = true;
1570 }
1571 }
1572
1573 report:
1574 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
1575 kfree_skb(pkt);
1576}
1577
1578static void iwl_mvm_le64_to_aes_seq(__le64 le_pn, struct ieee80211_key_seq *seq)
1579{
1580 u64 pn = le64_to_cpu(le_pn);
1581
1582 seq->ccmp.pn[0] = pn >> 40;
1583 seq->ccmp.pn[1] = pn >> 32;
1584 seq->ccmp.pn[2] = pn >> 24;
1585 seq->ccmp.pn[3] = pn >> 16;
1586 seq->ccmp.pn[4] = pn >> 8;
1587 seq->ccmp.pn[5] = pn;
1588}
1589
1590static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc,
1591 struct ieee80211_key_seq *seq)
1592{
1593 iwl_mvm_le64_to_aes_seq(sc->pn, seq);
1594}
1595
1596static void iwl_mvm_le64_to_tkip_seq(__le64 le_pn, struct ieee80211_key_seq *seq)
1597{
1598 u64 pn = le64_to_cpu(le_pn);
1599
1600 seq->tkip.iv16 = (u16)pn;
1601 seq->tkip.iv32 = (u32)(pn >> 16);
1602}
1603
1604static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc,
1605 struct ieee80211_key_seq *seq)
1606{
1607 seq->tkip.iv32 = le32_to_cpu(sc->iv32);
1608 seq->tkip.iv16 = le16_to_cpu(sc->iv16);
1609}
1610
1611static void iwl_mvm_set_key_rx_seq_tids(struct ieee80211_key_conf *key,
1612 struct ieee80211_key_seq *seq)
1613{
1614 int tid;
1615
1616 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++)
1617 ieee80211_set_key_rx_seq(key, tid, &seq[tid]);
1618}
1619
1620static void iwl_mvm_set_aes_ptk_rx_seq(struct iwl_mvm *mvm,
1621 struct iwl_wowlan_status_data *status,
1622 struct ieee80211_sta *sta,
1623 struct ieee80211_key_conf *key)
1624{
1625 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1626 struct iwl_mvm_key_pn *ptk_pn;
1627 int tid;
1628
1629 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.aes.seq);
1630
1631 if (!iwl_mvm_has_new_rx_api(mvm))
1632 return;
1633
1634
1635 rcu_read_lock();
1636 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]);
1637 if (WARN_ON(!ptk_pn)) {
1638 rcu_read_unlock();
1639 return;
1640 }
1641
1642 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1643 int i;
1644
1645 for (i = 1; i < mvm->trans->num_rx_queues; i++)
1646 memcpy(ptk_pn->q[i].pn[tid],
1647 status->ptk.aes.seq[tid].ccmp.pn,
1648 IEEE80211_CCMP_PN_LEN);
1649 }
1650 rcu_read_unlock();
1651}
1652
1653static void iwl_mvm_convert_key_counters(struct iwl_wowlan_status_data *status,
1654 union iwl_all_tsc_rsc *sc)
1655{
1656 int i;
1657
1658 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT);
1659 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC);
1660
1661 /* GTK RX counters */
1662 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1663 iwl_mvm_tkip_sc_to_seq(&sc->tkip.multicast_rsc[i],
1664 &status->gtk_seq[0].tkip.seq[i]);
1665 iwl_mvm_aes_sc_to_seq(&sc->aes.multicast_rsc[i],
1666 &status->gtk_seq[0].aes.seq[i]);
1667 }
1668 status->gtk_seq[0].valid = true;
1669 status->gtk_seq[0].key_id = -1;
1670
1671 /* PTK TX counter */
1672 status->ptk.tkip.tx_pn = (u64)le16_to_cpu(sc->tkip.tsc.iv16) |
1673 ((u64)le32_to_cpu(sc->tkip.tsc.iv32) << 16);
1674 status->ptk.aes.tx_pn = le64_to_cpu(sc->aes.tsc.pn);
1675
1676 /* PTK RX counters */
1677 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1678 iwl_mvm_tkip_sc_to_seq(&sc->tkip.unicast_rsc[i],
1679 &status->ptk.tkip.seq[i]);
1680 iwl_mvm_aes_sc_to_seq(&sc->aes.unicast_rsc[i],
1681 &status->ptk.aes.seq[i]);
1682 }
1683}
1684
1685static void
1686iwl_mvm_convert_key_counters_v5_gtk_seq(struct iwl_wowlan_status_data *status,
1687 struct iwl_wowlan_all_rsc_tsc_v5 *sc,
1688 unsigned int idx, unsigned int key_id)
1689{
1690 int tid;
1691
1692 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1693 iwl_mvm_le64_to_tkip_seq(sc->mcast_rsc[idx][tid],
1694 &status->gtk_seq[idx].tkip.seq[tid]);
1695 iwl_mvm_le64_to_aes_seq(sc->mcast_rsc[idx][tid],
1696 &status->gtk_seq[idx].aes.seq[tid]);
1697 }
1698
1699 status->gtk_seq[idx].valid = true;
1700 status->gtk_seq[idx].key_id = key_id;
1701}
1702
1703static void
1704iwl_mvm_convert_key_counters_v5(struct iwl_wowlan_status_data *status,
1705 struct iwl_wowlan_all_rsc_tsc_v5 *sc)
1706{
1707 int i, tid;
1708
1709 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT);
1710 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC);
1711 BUILD_BUG_ON(ARRAY_SIZE(sc->mcast_rsc) != ARRAY_SIZE(status->gtk_seq));
1712
1713 /* GTK RX counters */
1714 for (i = 0; i < ARRAY_SIZE(sc->mcast_key_id_map); i++) {
1715 u8 entry = sc->mcast_key_id_map[i];
1716
1717 if (entry < ARRAY_SIZE(sc->mcast_rsc))
1718 iwl_mvm_convert_key_counters_v5_gtk_seq(status, sc,
1719 entry, i);
1720 }
1721
1722 /* PTK TX counters not needed, assigned in device */
1723
1724 /* PTK RX counters */
1725 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1726 iwl_mvm_le64_to_tkip_seq(sc->ucast_rsc[tid],
1727 &status->ptk.tkip.seq[tid]);
1728 iwl_mvm_le64_to_aes_seq(sc->ucast_rsc[tid],
1729 &status->ptk.aes.seq[tid]);
1730 }
1731}
1732
1733static void iwl_mvm_set_key_rx_seq_idx(struct ieee80211_key_conf *key,
1734 struct iwl_wowlan_status_data *status,
1735 int idx)
1736{
1737 switch (key->cipher) {
1738 case WLAN_CIPHER_SUITE_CCMP:
1739 case WLAN_CIPHER_SUITE_GCMP:
1740 case WLAN_CIPHER_SUITE_GCMP_256:
1741 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].aes.seq);
1742 break;
1743 case WLAN_CIPHER_SUITE_TKIP:
1744 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].tkip.seq);
1745 break;
1746 default:
1747 WARN_ON(1);
1748 }
1749}
1750
1751static void iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf *key,
1752 struct iwl_wowlan_status_data *status,
1753 bool installed)
1754{
1755 int i;
1756
1757 for (i = 0; i < ARRAY_SIZE(status->gtk_seq); i++) {
1758 if (!status->gtk_seq[i].valid)
1759 continue;
1760
1761 /* Handle the case where we know the key ID */
1762 if (status->gtk_seq[i].key_id == key->keyidx) {
1763 s8 new_key_id = -1;
1764
1765 if (status->num_of_gtk_rekeys)
1766 new_key_id = status->gtk[0].flags &
1767 IWL_WOWLAN_GTK_IDX_MASK;
1768
1769 /* Don't install a new key's value to an old key */
1770 if (new_key_id != key->keyidx)
1771 iwl_mvm_set_key_rx_seq_idx(key, status, i);
1772 continue;
1773 }
1774
1775 /* handle the case where we didn't, last key only */
1776 if (status->gtk_seq[i].key_id == -1 &&
1777 (!status->num_of_gtk_rekeys || installed))
1778 iwl_mvm_set_key_rx_seq_idx(key, status, i);
1779 }
1780}
1781
1782struct iwl_mvm_d3_gtk_iter_data {
1783 struct iwl_mvm *mvm;
1784 struct iwl_wowlan_status_data *status;
1785 u32 gtk_cipher, igtk_cipher, bigtk_cipher;
1786 bool unhandled_cipher, igtk_support, bigtk_support;
1787 int num_keys;
1788};
1789
1790static void iwl_mvm_d3_find_last_keys(struct ieee80211_hw *hw,
1791 struct ieee80211_vif *vif,
1792 struct ieee80211_sta *sta,
1793 struct ieee80211_key_conf *key,
1794 void *_data)
1795{
1796 struct iwl_mvm_d3_gtk_iter_data *data = _data;
1797
1798 if (data->unhandled_cipher)
1799 return;
1800
1801 switch (key->cipher) {
1802 case WLAN_CIPHER_SUITE_WEP40:
1803 case WLAN_CIPHER_SUITE_WEP104:
1804 /* ignore WEP completely, nothing to do */
1805 return;
1806 case WLAN_CIPHER_SUITE_CCMP:
1807 case WLAN_CIPHER_SUITE_GCMP:
1808 case WLAN_CIPHER_SUITE_GCMP_256:
1809 case WLAN_CIPHER_SUITE_TKIP:
1810 /* we support these */
1811 data->gtk_cipher = key->cipher;
1812 break;
1813 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
1814 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
1815 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
1816 case WLAN_CIPHER_SUITE_AES_CMAC:
1817 /* we support these */
1818 if (data->igtk_support &&
1819 (key->keyidx == 4 || key->keyidx == 5)) {
1820 data->igtk_cipher = key->cipher;
1821 } else if (data->bigtk_support &&
1822 (key->keyidx == 6 || key->keyidx == 7)) {
1823 data->bigtk_cipher = key->cipher;
1824 } else {
1825 data->unhandled_cipher = true;
1826 return;
1827 }
1828 break;
1829 default:
1830 /* everything else - disconnect from AP */
1831 data->unhandled_cipher = true;
1832 return;
1833 }
1834
1835 data->num_keys++;
1836}
1837
1838static void
1839iwl_mvm_d3_set_igtk_bigtk_ipn(const struct iwl_multicast_key_data *key,
1840 struct ieee80211_key_seq *seq, u32 cipher)
1841{
1842 switch (cipher) {
1843 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
1844 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
1845 BUILD_BUG_ON(sizeof(seq->aes_gmac.pn) != sizeof(key->ipn));
1846 memcpy(seq->aes_gmac.pn, key->ipn, sizeof(seq->aes_gmac.pn));
1847 break;
1848 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
1849 BUILD_BUG_ON(sizeof(seq->aes_cmac.pn) != sizeof(key->ipn));
1850 memcpy(seq->aes_cmac.pn, key->ipn, sizeof(seq->aes_cmac.pn));
1851 break;
1852 }
1853}
1854
1855static void
1856iwl_mvm_d3_update_igtk_bigtk(struct iwl_wowlan_status_data *status,
1857 struct ieee80211_key_conf *key,
1858 struct iwl_multicast_key_data *key_data)
1859{
1860 if (status->num_of_gtk_rekeys && key_data->len) {
1861 /* remove rekeyed key */
1862 ieee80211_remove_key(key);
1863 } else {
1864 struct ieee80211_key_seq seq;
1865
1866 iwl_mvm_d3_set_igtk_bigtk_ipn(key_data,
1867 &seq,
1868 key->cipher);
1869 ieee80211_set_key_rx_seq(key, 0, &seq);
1870 }
1871}
1872
1873static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw,
1874 struct ieee80211_vif *vif,
1875 struct ieee80211_sta *sta,
1876 struct ieee80211_key_conf *key,
1877 void *_data)
1878{
1879 struct iwl_mvm_d3_gtk_iter_data *data = _data;
1880 struct iwl_wowlan_status_data *status = data->status;
1881 s8 keyidx;
1882
1883 if (data->unhandled_cipher)
1884 return;
1885
1886 switch (key->cipher) {
1887 case WLAN_CIPHER_SUITE_WEP40:
1888 case WLAN_CIPHER_SUITE_WEP104:
1889 /* ignore WEP completely, nothing to do */
1890 return;
1891 case WLAN_CIPHER_SUITE_CCMP:
1892 case WLAN_CIPHER_SUITE_GCMP:
1893 case WLAN_CIPHER_SUITE_GCMP_256:
1894 if (sta) {
1895 atomic64_set(&key->tx_pn, status->ptk.aes.tx_pn);
1896 iwl_mvm_set_aes_ptk_rx_seq(data->mvm, status, sta, key);
1897 return;
1898 }
1899 fallthrough;
1900 case WLAN_CIPHER_SUITE_TKIP:
1901 if (sta) {
1902 atomic64_set(&key->tx_pn, status->ptk.tkip.tx_pn);
1903 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.tkip.seq);
1904 return;
1905 }
1906 keyidx = key->keyidx;
1907 /* The current key is always sent by the FW, even if it wasn't
1908 * rekeyed during D3.
1909 * We remove an existing key if it has the same index as
1910 * a new key
1911 */
1912 if (status->num_of_gtk_rekeys &&
1913 ((status->gtk[0].len && keyidx == status->gtk[0].id) ||
1914 (status->gtk[1].len && keyidx == status->gtk[1].id))) {
1915 ieee80211_remove_key(key);
1916 } else {
1917 iwl_mvm_set_key_rx_seq(key, data->status, false);
1918 }
1919 break;
1920 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
1921 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
1922 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
1923 case WLAN_CIPHER_SUITE_AES_CMAC:
1924 if (key->keyidx == 4 || key->keyidx == 5) {
1925 iwl_mvm_d3_update_igtk_bigtk(status, key,
1926 &status->igtk);
1927 }
1928 if (key->keyidx == 6 || key->keyidx == 7) {
1929 u8 idx = key->keyidx == status->bigtk[1].id;
1930
1931 iwl_mvm_d3_update_igtk_bigtk(status, key,
1932 &status->bigtk[idx]);
1933 }
1934 }
1935}
1936
1937static bool iwl_mvm_gtk_rekey(struct iwl_wowlan_status_data *status,
1938 struct ieee80211_vif *vif,
1939 struct iwl_mvm *mvm, u32 gtk_cipher)
1940{
1941 int i;
1942 struct ieee80211_key_conf *key;
1943 struct {
1944 struct ieee80211_key_conf conf;
1945 u8 key[32];
1946 } conf = {
1947 .conf.cipher = gtk_cipher,
1948 };
1949
1950 BUILD_BUG_ON(WLAN_KEY_LEN_CCMP != WLAN_KEY_LEN_GCMP);
1951 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_CCMP);
1952 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_GCMP_256);
1953 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_TKIP);
1954 BUILD_BUG_ON(sizeof(conf.key) < sizeof(status->gtk[0].key));
1955
1956 switch (gtk_cipher) {
1957 case WLAN_CIPHER_SUITE_CCMP:
1958 case WLAN_CIPHER_SUITE_GCMP:
1959 conf.conf.keylen = WLAN_KEY_LEN_CCMP;
1960 break;
1961 case WLAN_CIPHER_SUITE_GCMP_256:
1962 conf.conf.keylen = WLAN_KEY_LEN_GCMP_256;
1963 break;
1964 case WLAN_CIPHER_SUITE_TKIP:
1965 conf.conf.keylen = WLAN_KEY_LEN_TKIP;
1966 break;
1967 default:
1968 WARN_ON(1);
1969 }
1970
1971 for (i = 0; i < ARRAY_SIZE(status->gtk); i++) {
1972 if (!status->gtk[i].len)
1973 continue;
1974
1975 conf.conf.keyidx = status->gtk[i].id;
1976 IWL_DEBUG_WOWLAN(mvm,
1977 "Received from FW GTK cipher %d, key index %d\n",
1978 conf.conf.cipher, conf.conf.keyidx);
1979 memcpy(conf.conf.key, status->gtk[i].key,
1980 sizeof(status->gtk[i].key));
1981
1982 key = ieee80211_gtk_rekey_add(vif, &conf.conf);
1983 if (IS_ERR(key))
1984 return false;
1985 iwl_mvm_set_key_rx_seq_idx(key, status, i);
1986 }
1987
1988 return true;
1989}
1990
1991static bool
1992iwl_mvm_d3_igtk_bigtk_rekey_add(struct iwl_wowlan_status_data *status,
1993 struct ieee80211_vif *vif, u32 cipher,
1994 struct iwl_multicast_key_data *key_data)
1995{
1996 struct ieee80211_key_conf *key_config;
1997 struct {
1998 struct ieee80211_key_conf conf;
1999 u8 key[WOWLAN_KEY_MAX_SIZE];
2000 } conf = {
2001 .conf.cipher = cipher,
2002 .conf.keyidx = key_data->id,
2003 };
2004 struct ieee80211_key_seq seq;
2005
2006 if (!key_data->len)
2007 return true;
2008
2009 iwl_mvm_d3_set_igtk_bigtk_ipn(key_data, &seq, conf.conf.cipher);
2010
2011 switch (cipher) {
2012 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
2013 conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_128;
2014 break;
2015 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
2016 conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_256;
2017 break;
2018 case WLAN_CIPHER_SUITE_AES_CMAC:
2019 conf.conf.keylen = WLAN_KEY_LEN_AES_CMAC;
2020 break;
2021 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
2022 conf.conf.keylen = WLAN_KEY_LEN_BIP_CMAC_256;
2023 break;
2024 default:
2025 WARN_ON(1);
2026 }
2027 BUILD_BUG_ON(sizeof(conf.key) < sizeof(key_data->key));
2028 memcpy(conf.conf.key, key_data->key, conf.conf.keylen);
2029
2030 key_config = ieee80211_gtk_rekey_add(vif, &conf.conf);
2031 if (IS_ERR(key_config))
2032 return false;
2033 ieee80211_set_key_rx_seq(key_config, 0, &seq);
2034
2035 if (key_config->keyidx == 4 || key_config->keyidx == 5) {
2036 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2037 int link_id = vif->active_links ? __ffs(vif->active_links) : 0;
2038 struct iwl_mvm_vif_link_info *mvm_link =
2039 mvmvif->link[link_id];
2040
2041 mvm_link->igtk = key_config;
2042 }
2043
2044 return true;
2045}
2046
2047static int iwl_mvm_lookup_wowlan_status_ver(struct iwl_mvm *mvm)
2048{
2049 u8 notif_ver;
2050
2051 if (!fw_has_api(&mvm->fw->ucode_capa,
2052 IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL))
2053 return 6;
2054
2055 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */
2056 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP,
2057 WOWLAN_GET_STATUSES, 0);
2058 if (!notif_ver)
2059 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
2060 WOWLAN_GET_STATUSES, 7);
2061
2062 return notif_ver;
2063}
2064
2065static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm,
2066 struct ieee80211_vif *vif,
2067 struct iwl_wowlan_status_data *status)
2068{
2069 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2070 struct iwl_mvm_d3_gtk_iter_data gtkdata = {
2071 .mvm = mvm,
2072 .status = status,
2073 };
2074 int i;
2075
2076 u32 disconnection_reasons =
2077 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
2078 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH;
2079
2080 if (!status || !vif->bss_conf.bssid)
2081 return false;
2082
2083 if (status->wakeup_reasons & disconnection_reasons)
2084 return false;
2085
2086 if (iwl_mvm_lookup_wowlan_status_ver(mvm) > 6 ||
2087 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
2088 WOWLAN_INFO_NOTIFICATION,
2089 0))
2090 gtkdata.igtk_support = true;
2091
2092 if (iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
2093 WOWLAN_INFO_NOTIFICATION,
2094 0) >= 3)
2095 gtkdata.bigtk_support = true;
2096
2097 /* find last GTK that we used initially, if any */
2098 ieee80211_iter_keys(mvm->hw, vif,
2099 iwl_mvm_d3_find_last_keys, >kdata);
2100 /* not trying to keep connections with MFP/unhandled ciphers */
2101 if (gtkdata.unhandled_cipher)
2102 return false;
2103 if (!gtkdata.num_keys)
2104 goto out;
2105
2106 /*
2107 * invalidate all other GTKs that might still exist and update
2108 * the one that we used
2109 */
2110 ieee80211_iter_keys(mvm->hw, vif,
2111 iwl_mvm_d3_update_keys, >kdata);
2112
2113 if (status->num_of_gtk_rekeys) {
2114 __be64 replay_ctr = cpu_to_be64(status->replay_ctr);
2115
2116 IWL_DEBUG_WOWLAN(mvm, "num of GTK rekeying %d\n",
2117 status->num_of_gtk_rekeys);
2118
2119 if (!iwl_mvm_gtk_rekey(status, vif, mvm, gtkdata.gtk_cipher))
2120 return false;
2121
2122 if (!iwl_mvm_d3_igtk_bigtk_rekey_add(status, vif,
2123 gtkdata.igtk_cipher,
2124 &status->igtk))
2125 return false;
2126
2127 for (i = 0; i < ARRAY_SIZE(status->bigtk); i++) {
2128 if (!iwl_mvm_d3_igtk_bigtk_rekey_add(status, vif,
2129 gtkdata.bigtk_cipher,
2130 &status->bigtk[i]))
2131 return false;
2132 }
2133
2134 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid,
2135 (void *)&replay_ctr, GFP_KERNEL);
2136 }
2137
2138out:
2139 if (iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP,
2140 WOWLAN_GET_STATUSES, 0) < 10) {
2141 mvmvif->seqno_valid = true;
2142 /* +0x10 because the set API expects next-to-use, not last-used */
2143 mvmvif->seqno = status->non_qos_seq_ctr + 0x10;
2144 }
2145
2146 return true;
2147}
2148
2149static void iwl_mvm_convert_gtk_v2(struct iwl_wowlan_status_data *status,
2150 struct iwl_wowlan_gtk_status_v2 *data)
2151{
2152 BUILD_BUG_ON(sizeof(status->gtk[0].key) < sizeof(data->key));
2153 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY +
2154 sizeof(data->tkip_mic_key) >
2155 sizeof(status->gtk[0].key));
2156
2157 status->gtk[0].len = data->key_len;
2158 status->gtk[0].flags = data->key_flags;
2159
2160 memcpy(status->gtk[0].key, data->key, sizeof(data->key));
2161
2162 /* if it's as long as the TKIP encryption key, copy MIC key */
2163 if (status->gtk[0].len == NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY)
2164 memcpy(status->gtk[0].key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
2165 data->tkip_mic_key, sizeof(data->tkip_mic_key));
2166}
2167
2168static void iwl_mvm_convert_gtk_v3(struct iwl_wowlan_status_data *status,
2169 struct iwl_wowlan_gtk_status_v3 *data)
2170{
2171 int data_idx, status_idx = 0;
2172
2173 BUILD_BUG_ON(sizeof(status->gtk[0].key) < sizeof(data[0].key));
2174 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY +
2175 sizeof(data[0].tkip_mic_key) >
2176 sizeof(status->gtk[0].key));
2177 BUILD_BUG_ON(ARRAY_SIZE(status->gtk) < WOWLAN_GTK_KEYS_NUM);
2178 for (data_idx = 0; data_idx < ARRAY_SIZE(status->gtk); data_idx++) {
2179 if (!(data[data_idx].key_len))
2180 continue;
2181 status->gtk[status_idx].len = data[data_idx].key_len;
2182 status->gtk[status_idx].flags = data[data_idx].key_flags;
2183 status->gtk[status_idx].id = status->gtk[status_idx].flags &
2184 IWL_WOWLAN_GTK_IDX_MASK;
2185
2186 memcpy(status->gtk[status_idx].key, data[data_idx].key,
2187 sizeof(data[data_idx].key));
2188
2189 /* if it's as long as the TKIP encryption key, copy MIC key */
2190 if (status->gtk[status_idx].len ==
2191 NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY)
2192 memcpy(status->gtk[status_idx].key +
2193 NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
2194 data[data_idx].tkip_mic_key,
2195 sizeof(data[data_idx].tkip_mic_key));
2196 status_idx++;
2197 }
2198}
2199
2200static void iwl_mvm_convert_igtk(struct iwl_wowlan_status_data *status,
2201 struct iwl_wowlan_igtk_status *data)
2202{
2203 BUILD_BUG_ON(sizeof(status->igtk.key) < sizeof(data->key));
2204
2205 if (!data->key_len)
2206 return;
2207
2208 status->igtk.len = data->key_len;
2209 status->igtk.flags = data->key_flags;
2210 status->igtk.id = u32_get_bits(data->key_flags,
2211 IWL_WOWLAN_IGTK_BIGTK_IDX_MASK)
2212 + WOWLAN_IGTK_MIN_INDEX;
2213
2214 memcpy(status->igtk.key, data->key, sizeof(data->key));
2215 memcpy(status->igtk.ipn, data->ipn, sizeof(data->ipn));
2216}
2217
2218static void iwl_mvm_convert_bigtk(struct iwl_wowlan_status_data *status,
2219 const struct iwl_wowlan_igtk_status *data)
2220{
2221 int data_idx, status_idx = 0;
2222
2223 BUILD_BUG_ON(ARRAY_SIZE(status->bigtk) < WOWLAN_BIGTK_KEYS_NUM);
2224
2225 for (data_idx = 0; data_idx < WOWLAN_BIGTK_KEYS_NUM; data_idx++) {
2226 if (!data[data_idx].key_len)
2227 continue;
2228
2229 status->bigtk[status_idx].len = data[data_idx].key_len;
2230 status->bigtk[status_idx].flags = data[data_idx].key_flags;
2231 status->bigtk[status_idx].id =
2232 u32_get_bits(data[data_idx].key_flags,
2233 IWL_WOWLAN_IGTK_BIGTK_IDX_MASK)
2234 + WOWLAN_BIGTK_MIN_INDEX;
2235
2236 BUILD_BUG_ON(sizeof(status->bigtk[status_idx].key) <
2237 sizeof(data[data_idx].key));
2238 BUILD_BUG_ON(sizeof(status->bigtk[status_idx].ipn) <
2239 sizeof(data[data_idx].ipn));
2240
2241 memcpy(status->bigtk[status_idx].key, data[data_idx].key,
2242 sizeof(data[data_idx].key));
2243 memcpy(status->bigtk[status_idx].ipn, data[data_idx].ipn,
2244 sizeof(data[data_idx].ipn));
2245 status_idx++;
2246 }
2247}
2248
2249static void iwl_mvm_parse_wowlan_info_notif(struct iwl_mvm *mvm,
2250 struct iwl_wowlan_info_notif *data,
2251 struct iwl_wowlan_status_data *status,
2252 u32 len)
2253{
2254 u32 i;
2255
2256 if (!data) {
2257 IWL_ERR(mvm, "iwl_wowlan_info_notif data is NULL\n");
2258 status = NULL;
2259 return;
2260 }
2261
2262 if (len < sizeof(*data)) {
2263 IWL_ERR(mvm, "Invalid WoWLAN info notification!\n");
2264 status = NULL;
2265 return;
2266 }
2267
2268 iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc);
2269 iwl_mvm_convert_gtk_v3(status, data->gtk);
2270 iwl_mvm_convert_igtk(status, &data->igtk[0]);
2271 iwl_mvm_convert_bigtk(status, data->bigtk);
2272 status->replay_ctr = le64_to_cpu(data->replay_ctr);
2273 status->pattern_number = le16_to_cpu(data->pattern_number);
2274 for (i = 0; i < IWL_MAX_TID_COUNT; i++)
2275 status->qos_seq_ctr[i] =
2276 le16_to_cpu(data->qos_seq_ctr[i]);
2277 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons);
2278 status->num_of_gtk_rekeys =
2279 le32_to_cpu(data->num_of_gtk_rekeys);
2280 status->received_beacons = le32_to_cpu(data->received_beacons);
2281 status->tid_tear_down = data->tid_tear_down;
2282}
2283
2284static void
2285iwl_mvm_parse_wowlan_info_notif_v2(struct iwl_mvm *mvm,
2286 struct iwl_wowlan_info_notif_v2 *data,
2287 struct iwl_wowlan_status_data *status,
2288 u32 len)
2289{
2290 u32 i;
2291
2292 if (!data) {
2293 IWL_ERR(mvm, "iwl_wowlan_info_notif data is NULL\n");
2294 status = NULL;
2295 return;
2296 }
2297
2298 if (len < sizeof(*data)) {
2299 IWL_ERR(mvm, "Invalid WoWLAN info notification!\n");
2300 status = NULL;
2301 return;
2302 }
2303
2304 iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc);
2305 iwl_mvm_convert_gtk_v3(status, data->gtk);
2306 iwl_mvm_convert_igtk(status, &data->igtk[0]);
2307 status->replay_ctr = le64_to_cpu(data->replay_ctr);
2308 status->pattern_number = le16_to_cpu(data->pattern_number);
2309 for (i = 0; i < IWL_MAX_TID_COUNT; i++)
2310 status->qos_seq_ctr[i] =
2311 le16_to_cpu(data->qos_seq_ctr[i]);
2312 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons);
2313 status->num_of_gtk_rekeys =
2314 le32_to_cpu(data->num_of_gtk_rekeys);
2315 status->received_beacons = le32_to_cpu(data->received_beacons);
2316 status->tid_tear_down = data->tid_tear_down;
2317}
2318
2319/* Occasionally, templates would be nice. This is one of those times ... */
2320#define iwl_mvm_parse_wowlan_status_common(_ver) \
2321static struct iwl_wowlan_status_data * \
2322iwl_mvm_parse_wowlan_status_common_ ## _ver(struct iwl_mvm *mvm, \
2323 struct iwl_wowlan_status_ ##_ver *data,\
2324 int len) \
2325{ \
2326 struct iwl_wowlan_status_data *status; \
2327 int data_size, i; \
2328 \
2329 if (len < sizeof(*data)) { \
2330 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \
2331 return NULL; \
2332 } \
2333 \
2334 data_size = ALIGN(le32_to_cpu(data->wake_packet_bufsize), 4); \
2335 if (len != sizeof(*data) + data_size) { \
2336 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \
2337 return NULL; \
2338 } \
2339 \
2340 status = kzalloc(sizeof(*status), GFP_KERNEL); \
2341 if (!status) \
2342 return NULL; \
2343 \
2344 /* copy all the common fields */ \
2345 status->replay_ctr = le64_to_cpu(data->replay_ctr); \
2346 status->pattern_number = le16_to_cpu(data->pattern_number); \
2347 status->non_qos_seq_ctr = le16_to_cpu(data->non_qos_seq_ctr); \
2348 for (i = 0; i < 8; i++) \
2349 status->qos_seq_ctr[i] = \
2350 le16_to_cpu(data->qos_seq_ctr[i]); \
2351 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); \
2352 status->num_of_gtk_rekeys = \
2353 le32_to_cpu(data->num_of_gtk_rekeys); \
2354 status->received_beacons = le32_to_cpu(data->received_beacons); \
2355 status->wake_packet_length = \
2356 le32_to_cpu(data->wake_packet_length); \
2357 status->wake_packet_bufsize = \
2358 le32_to_cpu(data->wake_packet_bufsize); \
2359 if (status->wake_packet_bufsize) { \
2360 status->wake_packet = \
2361 kmemdup(data->wake_packet, \
2362 status->wake_packet_bufsize, \
2363 GFP_KERNEL); \
2364 if (!status->wake_packet) { \
2365 kfree(status); \
2366 return NULL; \
2367 } \
2368 } else { \
2369 status->wake_packet = NULL; \
2370 } \
2371 \
2372 return status; \
2373}
2374
2375iwl_mvm_parse_wowlan_status_common(v6)
2376iwl_mvm_parse_wowlan_status_common(v7)
2377iwl_mvm_parse_wowlan_status_common(v9)
2378iwl_mvm_parse_wowlan_status_common(v12)
2379
2380static struct iwl_wowlan_status_data *
2381iwl_mvm_send_wowlan_get_status(struct iwl_mvm *mvm, u8 sta_id)
2382{
2383 struct iwl_wowlan_status_data *status;
2384 struct iwl_wowlan_get_status_cmd get_status_cmd = {
2385 .sta_id = cpu_to_le32(sta_id),
2386 };
2387 struct iwl_host_cmd cmd = {
2388 .id = WOWLAN_GET_STATUSES,
2389 .flags = CMD_WANT_SKB,
2390 .data = { &get_status_cmd, },
2391 .len = { sizeof(get_status_cmd), },
2392 };
2393 int ret, len;
2394 u8 notif_ver;
2395 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id,
2396 IWL_FW_CMD_VER_UNKNOWN);
2397
2398 if (cmd_ver == IWL_FW_CMD_VER_UNKNOWN)
2399 cmd.len[0] = 0;
2400
2401 lockdep_assert_held(&mvm->mutex);
2402
2403 ret = iwl_mvm_send_cmd(mvm, &cmd);
2404 if (ret) {
2405 IWL_ERR(mvm, "failed to query wakeup status (%d)\n", ret);
2406 return ERR_PTR(ret);
2407 }
2408
2409 len = iwl_rx_packet_payload_len(cmd.resp_pkt);
2410
2411 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */
2412 notif_ver = iwl_mvm_lookup_wowlan_status_ver(mvm);
2413
2414 if (notif_ver < 7) {
2415 struct iwl_wowlan_status_v6 *v6 = (void *)cmd.resp_pkt->data;
2416
2417 status = iwl_mvm_parse_wowlan_status_common_v6(mvm, v6, len);
2418 if (!status)
2419 goto out_free_resp;
2420
2421 BUILD_BUG_ON(sizeof(v6->gtk.decrypt_key) >
2422 sizeof(status->gtk[0].key));
2423 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY +
2424 sizeof(v6->gtk.tkip_mic_key) >
2425 sizeof(status->gtk[0].key));
2426
2427 /* copy GTK info to the right place */
2428 memcpy(status->gtk[0].key, v6->gtk.decrypt_key,
2429 sizeof(v6->gtk.decrypt_key));
2430 memcpy(status->gtk[0].key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
2431 v6->gtk.tkip_mic_key,
2432 sizeof(v6->gtk.tkip_mic_key));
2433
2434 iwl_mvm_convert_key_counters(status, &v6->gtk.rsc.all_tsc_rsc);
2435
2436 /* hardcode the key length to 16 since v6 only supports 16 */
2437 status->gtk[0].len = 16;
2438
2439 /*
2440 * The key index only uses 2 bits (values 0 to 3) and
2441 * we always set bit 7 which means this is the
2442 * currently used key.
2443 */
2444 status->gtk[0].flags = v6->gtk.key_index | BIT(7);
2445 } else if (notif_ver == 7) {
2446 struct iwl_wowlan_status_v7 *v7 = (void *)cmd.resp_pkt->data;
2447
2448 status = iwl_mvm_parse_wowlan_status_common_v7(mvm, v7, len);
2449 if (!status)
2450 goto out_free_resp;
2451
2452 iwl_mvm_convert_key_counters(status, &v7->gtk[0].rsc.all_tsc_rsc);
2453 iwl_mvm_convert_gtk_v2(status, &v7->gtk[0]);
2454 iwl_mvm_convert_igtk(status, &v7->igtk[0]);
2455 } else if (notif_ver == 9 || notif_ver == 10 || notif_ver == 11) {
2456 struct iwl_wowlan_status_v9 *v9 = (void *)cmd.resp_pkt->data;
2457
2458 /* these three command versions have same layout and size, the
2459 * difference is only in a few not used (reserved) fields.
2460 */
2461 status = iwl_mvm_parse_wowlan_status_common_v9(mvm, v9, len);
2462 if (!status)
2463 goto out_free_resp;
2464
2465 iwl_mvm_convert_key_counters(status, &v9->gtk[0].rsc.all_tsc_rsc);
2466 iwl_mvm_convert_gtk_v2(status, &v9->gtk[0]);
2467 iwl_mvm_convert_igtk(status, &v9->igtk[0]);
2468
2469 status->tid_tear_down = v9->tid_tear_down;
2470 } else if (notif_ver == 12) {
2471 struct iwl_wowlan_status_v12 *v12 = (void *)cmd.resp_pkt->data;
2472
2473 status = iwl_mvm_parse_wowlan_status_common_v12(mvm, v12, len);
2474 if (!status)
2475 goto out_free_resp;
2476
2477 iwl_mvm_convert_key_counters_v5(status, &v12->gtk[0].sc);
2478 iwl_mvm_convert_gtk_v3(status, v12->gtk);
2479 iwl_mvm_convert_igtk(status, &v12->igtk[0]);
2480
2481 status->tid_tear_down = v12->tid_tear_down;
2482 } else {
2483 IWL_ERR(mvm,
2484 "Firmware advertises unknown WoWLAN status response %d!\n",
2485 notif_ver);
2486 status = NULL;
2487 }
2488
2489out_free_resp:
2490 iwl_free_resp(&cmd);
2491 return status;
2492}
2493
2494/* releases the MVM mutex */
2495static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm,
2496 struct ieee80211_vif *vif,
2497 struct iwl_wowlan_status_data *status)
2498{
2499 int i;
2500 bool keep = false;
2501 struct iwl_mvm_sta *mvm_ap_sta;
2502
2503 if (!status)
2504 goto out_unlock;
2505
2506 IWL_DEBUG_WOWLAN(mvm, "wakeup reason 0x%x\n",
2507 status->wakeup_reasons);
2508
2509 /* still at hard-coded place 0 for D3 image */
2510 mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, 0);
2511 if (!mvm_ap_sta)
2512 goto out_unlock;
2513
2514 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
2515 u16 seq = status->qos_seq_ctr[i];
2516 /* firmware stores last-used value, we store next value */
2517 seq += 0x10;
2518 mvm_ap_sta->tid_data[i].seq_number = seq;
2519 }
2520
2521 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000) {
2522 i = mvm->offload_tid;
2523 iwl_trans_set_q_ptrs(mvm->trans,
2524 mvm_ap_sta->tid_data[i].txq_id,
2525 mvm_ap_sta->tid_data[i].seq_number >> 4);
2526 }
2527
2528 iwl_mvm_report_wakeup_reasons(mvm, vif, status);
2529
2530 keep = iwl_mvm_setup_connection_keep(mvm, vif, status);
2531out_unlock:
2532 mutex_unlock(&mvm->mutex);
2533 return keep;
2534}
2535
2536#define ND_QUERY_BUF_LEN (sizeof(struct iwl_scan_offload_profile_match) * \
2537 IWL_SCAN_MAX_PROFILES)
2538
2539struct iwl_mvm_nd_results {
2540 u32 matched_profiles;
2541 u8 matches[ND_QUERY_BUF_LEN];
2542};
2543
2544static int
2545iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm,
2546 struct iwl_mvm_nd_results *results)
2547{
2548 struct iwl_scan_offload_match_info *query;
2549 struct iwl_host_cmd cmd = {
2550 .id = SCAN_OFFLOAD_PROFILES_QUERY_CMD,
2551 .flags = CMD_WANT_SKB,
2552 };
2553 int ret, len;
2554 size_t query_len, matches_len;
2555 int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw);
2556
2557 ret = iwl_mvm_send_cmd(mvm, &cmd);
2558 if (ret) {
2559 IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret);
2560 return ret;
2561 }
2562
2563 if (fw_has_api(&mvm->fw->ucode_capa,
2564 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2565 query_len = sizeof(struct iwl_scan_offload_match_info);
2566 matches_len = sizeof(struct iwl_scan_offload_profile_match) *
2567 max_profiles;
2568 } else {
2569 query_len = sizeof(struct iwl_scan_offload_profiles_query_v1);
2570 matches_len = sizeof(struct iwl_scan_offload_profile_match_v1) *
2571 max_profiles;
2572 }
2573
2574 len = iwl_rx_packet_payload_len(cmd.resp_pkt);
2575 if (len < query_len) {
2576 IWL_ERR(mvm, "Invalid scan offload profiles query response!\n");
2577 ret = -EIO;
2578 goto out_free_resp;
2579 }
2580
2581 query = (void *)cmd.resp_pkt->data;
2582
2583 results->matched_profiles = le32_to_cpu(query->matched_profiles);
2584 memcpy(results->matches, query->matches, matches_len);
2585
2586#ifdef CONFIG_IWLWIFI_DEBUGFS
2587 mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done);
2588#endif
2589
2590out_free_resp:
2591 iwl_free_resp(&cmd);
2592 return ret;
2593}
2594
2595static int iwl_mvm_query_num_match_chans(struct iwl_mvm *mvm,
2596 struct iwl_mvm_nd_results *results,
2597 int idx)
2598{
2599 int n_chans = 0, i;
2600
2601 if (fw_has_api(&mvm->fw->ucode_capa,
2602 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2603 struct iwl_scan_offload_profile_match *matches =
2604 (void *)results->matches;
2605
2606 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; i++)
2607 n_chans += hweight8(matches[idx].matching_channels[i]);
2608 } else {
2609 struct iwl_scan_offload_profile_match_v1 *matches =
2610 (void *)results->matches;
2611
2612 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1; i++)
2613 n_chans += hweight8(matches[idx].matching_channels[i]);
2614 }
2615
2616 return n_chans;
2617}
2618
2619static void iwl_mvm_query_set_freqs(struct iwl_mvm *mvm,
2620 struct iwl_mvm_nd_results *results,
2621 struct cfg80211_wowlan_nd_match *match,
2622 int idx)
2623{
2624 int i;
2625
2626 if (fw_has_api(&mvm->fw->ucode_capa,
2627 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2628 struct iwl_scan_offload_profile_match *matches =
2629 (void *)results->matches;
2630
2631 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; i++)
2632 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
2633 match->channels[match->n_channels++] =
2634 mvm->nd_channels[i]->center_freq;
2635 } else {
2636 struct iwl_scan_offload_profile_match_v1 *matches =
2637 (void *)results->matches;
2638
2639 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1 * 8; i++)
2640 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
2641 match->channels[match->n_channels++] =
2642 mvm->nd_channels[i]->center_freq;
2643 }
2644}
2645
2646/**
2647 * enum iwl_d3_notif - d3 notifications
2648 * @IWL_D3_NOTIF_WOWLAN_INFO: WOWLAN_INFO_NOTIF was received
2649 * @IWL_D3_NOTIF_WOWLAN_WAKE_PKT: WOWLAN_WAKE_PKT_NOTIF was received
2650 * @IWL_D3_NOTIF_PROT_OFFLOAD: PROT_OFFLOAD_NOTIF was received
2651 * @IWL_D3_ND_MATCH_INFO: OFFLOAD_MATCH_INFO_NOTIF was received
2652 * @IWL_D3_NOTIF_D3_END_NOTIF: D3_END_NOTIF was received
2653 */
2654enum iwl_d3_notif {
2655 IWL_D3_NOTIF_WOWLAN_INFO = BIT(0),
2656 IWL_D3_NOTIF_WOWLAN_WAKE_PKT = BIT(1),
2657 IWL_D3_NOTIF_PROT_OFFLOAD = BIT(2),
2658 IWL_D3_ND_MATCH_INFO = BIT(3),
2659 IWL_D3_NOTIF_D3_END_NOTIF = BIT(4)
2660};
2661
2662/* manage d3 resume data */
2663struct iwl_d3_data {
2664 struct iwl_wowlan_status_data *status;
2665 bool test;
2666 u32 d3_end_flags;
2667 u32 notif_expected; /* bitmap - see &enum iwl_d3_notif */
2668 u32 notif_received; /* bitmap - see &enum iwl_d3_notif */
2669 struct iwl_mvm_nd_results *nd_results;
2670 bool nd_results_valid;
2671};
2672
2673static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm,
2674 struct ieee80211_vif *vif,
2675 struct iwl_d3_data *d3_data)
2676{
2677 struct cfg80211_wowlan_nd_info *net_detect = NULL;
2678 struct cfg80211_wowlan_wakeup wakeup = {
2679 .pattern_idx = -1,
2680 };
2681 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
2682 unsigned long matched_profiles;
2683 u32 reasons = 0;
2684 int i, n_matches, ret;
2685
2686 if (WARN_ON(!d3_data || !d3_data->status))
2687 goto out;
2688
2689 reasons = d3_data->status->wakeup_reasons;
2690
2691 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
2692 wakeup.rfkill_release = true;
2693
2694 if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS)
2695 goto out;
2696
2697 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
2698 WOWLAN_INFO_NOTIFICATION, 0)) {
2699 IWL_INFO(mvm, "Query FW for ND results\n");
2700 ret = iwl_mvm_netdetect_query_results(mvm, d3_data->nd_results);
2701
2702 } else {
2703 IWL_INFO(mvm, "Notification based ND results\n");
2704 ret = d3_data->nd_results_valid ? 0 : -1;
2705 }
2706
2707 if (ret || !d3_data->nd_results->matched_profiles) {
2708 wakeup_report = NULL;
2709 goto out;
2710 }
2711
2712 matched_profiles = d3_data->nd_results->matched_profiles;
2713 if (mvm->n_nd_match_sets) {
2714 n_matches = hweight_long(matched_profiles);
2715 } else {
2716 IWL_ERR(mvm, "no net detect match information available\n");
2717 n_matches = 0;
2718 }
2719
2720 net_detect = kzalloc(struct_size(net_detect, matches, n_matches),
2721 GFP_KERNEL);
2722 if (!net_detect || !n_matches)
2723 goto out_report_nd;
2724
2725 for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) {
2726 struct cfg80211_wowlan_nd_match *match;
2727 int idx, n_channels = 0;
2728
2729 n_channels = iwl_mvm_query_num_match_chans(mvm,
2730 d3_data->nd_results,
2731 i);
2732
2733 match = kzalloc(struct_size(match, channels, n_channels),
2734 GFP_KERNEL);
2735 if (!match)
2736 goto out_report_nd;
2737
2738 net_detect->matches[net_detect->n_matches++] = match;
2739
2740 /* We inverted the order of the SSIDs in the scan
2741 * request, so invert the index here.
2742 */
2743 idx = mvm->n_nd_match_sets - i - 1;
2744 match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len;
2745 memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid,
2746 match->ssid.ssid_len);
2747
2748 if (mvm->n_nd_channels < n_channels)
2749 continue;
2750
2751 iwl_mvm_query_set_freqs(mvm, d3_data->nd_results, match, i);
2752 }
2753
2754out_report_nd:
2755 wakeup.net_detect = net_detect;
2756out:
2757 iwl_mvm_free_nd(mvm);
2758
2759 mutex_unlock(&mvm->mutex);
2760 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
2761
2762 if (net_detect) {
2763 for (i = 0; i < net_detect->n_matches; i++)
2764 kfree(net_detect->matches[i]);
2765 kfree(net_detect);
2766 }
2767}
2768
2769static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac,
2770 struct ieee80211_vif *vif)
2771{
2772 /* skip the one we keep connection on */
2773 if (data == vif)
2774 return;
2775
2776 if (vif->type == NL80211_IFTYPE_STATION)
2777 ieee80211_resume_disconnect(vif);
2778}
2779
2780static bool iwl_mvm_rt_status(struct iwl_trans *trans, u32 base, u32 *err_id)
2781{
2782 struct error_table_start {
2783 /* cf. struct iwl_error_event_table */
2784 u32 valid;
2785 __le32 err_id;
2786 } err_info;
2787
2788 if (!base)
2789 return false;
2790
2791 iwl_trans_read_mem_bytes(trans, base,
2792 &err_info, sizeof(err_info));
2793 if (err_info.valid && err_id)
2794 *err_id = le32_to_cpu(err_info.err_id);
2795
2796 return !!err_info.valid;
2797}
2798
2799static bool iwl_mvm_check_rt_status(struct iwl_mvm *mvm,
2800 struct ieee80211_vif *vif)
2801{
2802 u32 err_id;
2803
2804 /* check for lmac1 error */
2805 if (iwl_mvm_rt_status(mvm->trans,
2806 mvm->trans->dbg.lmac_error_event_table[0],
2807 &err_id)) {
2808 if (err_id == RF_KILL_INDICATOR_FOR_WOWLAN) {
2809 struct cfg80211_wowlan_wakeup wakeup = {
2810 .rfkill_release = true,
2811 };
2812 ieee80211_report_wowlan_wakeup(vif, &wakeup,
2813 GFP_KERNEL);
2814 }
2815 return true;
2816 }
2817
2818 /* check if we have lmac2 set and check for error */
2819 if (iwl_mvm_rt_status(mvm->trans,
2820 mvm->trans->dbg.lmac_error_event_table[1], NULL))
2821 return true;
2822
2823 /* check for umac error */
2824 if (iwl_mvm_rt_status(mvm->trans,
2825 mvm->trans->dbg.umac_error_event_table, NULL))
2826 return true;
2827
2828 return false;
2829}
2830
2831/*
2832 * This function assumes:
2833 * 1. The mutex is already held.
2834 * 2. The callee functions unlock the mutex.
2835 */
2836static bool
2837iwl_mvm_choose_query_wakeup_reasons(struct iwl_mvm *mvm,
2838 struct ieee80211_vif *vif,
2839 struct iwl_d3_data *d3_data)
2840{
2841 lockdep_assert_held(&mvm->mutex);
2842
2843 /* if FW uses status notification, status shouldn't be NULL here */
2844 if (!d3_data->status) {
2845 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2846 u8 sta_id = mvm->net_detect ? IWL_MVM_INVALID_STA :
2847 mvmvif->deflink.ap_sta_id;
2848
2849 d3_data->status = iwl_mvm_send_wowlan_get_status(mvm, sta_id);
2850 }
2851
2852 if (mvm->net_detect) {
2853 iwl_mvm_query_netdetect_reasons(mvm, vif, d3_data);
2854 } else {
2855 bool keep = iwl_mvm_query_wakeup_reasons(mvm, vif,
2856 d3_data->status);
2857
2858#ifdef CONFIG_IWLWIFI_DEBUGFS
2859 if (keep)
2860 mvm->keep_vif = vif;
2861#endif
2862
2863 return keep;
2864 }
2865 return false;
2866}
2867
2868#define IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT (IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET | \
2869 IWL_WOWLAN_WAKEUP_BY_PATTERN | \
2870 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN |\
2871 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN_WILDCARD |\
2872 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN |\
2873 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN_WILDCARD)
2874
2875static int iwl_mvm_wowlan_store_wake_pkt(struct iwl_mvm *mvm,
2876 struct iwl_wowlan_wake_pkt_notif *notif,
2877 struct iwl_wowlan_status_data *status,
2878 u32 len)
2879{
2880 u32 data_size, packet_len = le32_to_cpu(notif->wake_packet_length);
2881
2882 if (len < sizeof(*notif)) {
2883 IWL_ERR(mvm, "Invalid WoWLAN wake packet notification!\n");
2884 return -EIO;
2885 }
2886
2887 if (WARN_ON(!status)) {
2888 IWL_ERR(mvm, "Got wake packet notification but wowlan status data is NULL\n");
2889 return -EIO;
2890 }
2891
2892 if (WARN_ON(!(status->wakeup_reasons &
2893 IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT))) {
2894 IWL_ERR(mvm, "Got wakeup packet but wakeup reason is %x\n",
2895 status->wakeup_reasons);
2896 return -EIO;
2897 }
2898
2899 data_size = len - offsetof(struct iwl_wowlan_wake_pkt_notif, wake_packet);
2900
2901 /* data_size got the padding from the notification, remove it. */
2902 if (packet_len < data_size)
2903 data_size = packet_len;
2904
2905 status->wake_packet = kmemdup(notif->wake_packet, data_size,
2906 GFP_ATOMIC);
2907
2908 if (!status->wake_packet)
2909 return -ENOMEM;
2910
2911 status->wake_packet_length = packet_len;
2912 status->wake_packet_bufsize = data_size;
2913
2914 return 0;
2915}
2916
2917static void iwl_mvm_nd_match_info_handler(struct iwl_mvm *mvm,
2918 struct iwl_d3_data *d3_data,
2919 struct iwl_scan_offload_match_info *notif,
2920 u32 len)
2921{
2922 struct iwl_wowlan_status_data *status = d3_data->status;
2923 struct ieee80211_vif *vif = iwl_mvm_get_bss_vif(mvm);
2924 struct iwl_mvm_nd_results *results = d3_data->nd_results;
2925 size_t i, matches_len = sizeof(struct iwl_scan_offload_profile_match) *
2926 iwl_umac_scan_get_max_profiles(mvm->fw);
2927
2928 if (IS_ERR_OR_NULL(vif))
2929 return;
2930
2931 if (len < sizeof(struct iwl_scan_offload_match_info)) {
2932 IWL_ERR(mvm, "Invalid scan match info notification\n");
2933 return;
2934 }
2935
2936 if (!mvm->net_detect) {
2937 IWL_ERR(mvm, "Unexpected scan match info notification\n");
2938 return;
2939 }
2940
2941 if (!status || status->wakeup_reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
2942 IWL_ERR(mvm,
2943 "Ignore scan match info notification: no reason\n");
2944 return;
2945 }
2946
2947#ifdef CONFIG_IWLWIFI_DEBUGFS
2948 mvm->last_netdetect_scans = le32_to_cpu(notif->n_scans_done);
2949#endif
2950
2951 results->matched_profiles = le32_to_cpu(notif->matched_profiles);
2952 IWL_INFO(mvm, "number of matched profiles=%u\n",
2953 results->matched_profiles);
2954
2955 if (results->matched_profiles) {
2956 memcpy(results->matches, notif->matches, matches_len);
2957 d3_data->nd_results_valid = TRUE;
2958 }
2959
2960 /* no scan should be active at this point */
2961 mvm->scan_status = 0;
2962 for (i = 0; i < mvm->max_scans; i++)
2963 mvm->scan_uid_status[i] = 0;
2964}
2965
2966static bool iwl_mvm_wait_d3_notif(struct iwl_notif_wait_data *notif_wait,
2967 struct iwl_rx_packet *pkt, void *data)
2968{
2969 struct iwl_mvm *mvm =
2970 container_of(notif_wait, struct iwl_mvm, notif_wait);
2971 struct iwl_d3_data *d3_data = data;
2972 u32 len = iwl_rx_packet_payload_len(pkt);
2973 int ret;
2974 int wowlan_info_ver = iwl_fw_lookup_notif_ver(mvm->fw,
2975 PROT_OFFLOAD_GROUP,
2976 WOWLAN_INFO_NOTIFICATION,
2977 IWL_FW_CMD_VER_UNKNOWN);
2978
2979
2980 switch (WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) {
2981 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION): {
2982
2983 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_INFO) {
2984 /* We might get two notifications due to dual bss */
2985 IWL_DEBUG_WOWLAN(mvm,
2986 "Got additional wowlan info notification\n");
2987 break;
2988 }
2989
2990 if (wowlan_info_ver < 2) {
2991 struct iwl_wowlan_info_notif_v1 *notif_v1 =
2992 (void *)pkt->data;
2993 struct iwl_wowlan_info_notif_v2 *notif_v2;
2994
2995 notif_v2 = kmemdup(notif_v1, sizeof(*notif_v2), GFP_ATOMIC);
2996
2997 if (!notif_v2)
2998 return false;
2999
3000 notif_v2->tid_tear_down = notif_v1->tid_tear_down;
3001 notif_v2->station_id = notif_v1->station_id;
3002 memset_after(notif_v2, 0, station_id);
3003 iwl_mvm_parse_wowlan_info_notif_v2(mvm, notif_v2,
3004 d3_data->status,
3005 len);
3006 kfree(notif_v2);
3007
3008 } else if (wowlan_info_ver == 2) {
3009 struct iwl_wowlan_info_notif_v2 *notif_v2 =
3010 (void *)pkt->data;
3011
3012 iwl_mvm_parse_wowlan_info_notif_v2(mvm, notif_v2,
3013 d3_data->status,
3014 len);
3015 } else {
3016 struct iwl_wowlan_info_notif *notif =
3017 (void *)pkt->data;
3018
3019 iwl_mvm_parse_wowlan_info_notif(mvm, notif,
3020 d3_data->status, len);
3021 }
3022
3023 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_INFO;
3024
3025 if (d3_data->status &&
3026 d3_data->status->wakeup_reasons & IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT)
3027 /* We are supposed to get also wake packet notif */
3028 d3_data->notif_expected |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT;
3029
3030 break;
3031 }
3032 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION): {
3033 struct iwl_wowlan_wake_pkt_notif *notif = (void *)pkt->data;
3034
3035 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_WAKE_PKT) {
3036 /* We shouldn't get two wake packet notifications */
3037 IWL_ERR(mvm,
3038 "Got additional wowlan wake packet notification\n");
3039 } else {
3040 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT;
3041 len = iwl_rx_packet_payload_len(pkt);
3042 ret = iwl_mvm_wowlan_store_wake_pkt(mvm, notif,
3043 d3_data->status,
3044 len);
3045 if (ret)
3046 IWL_ERR(mvm,
3047 "Can't parse WOWLAN_WAKE_PKT_NOTIFICATION\n");
3048 }
3049
3050 break;
3051 }
3052 case WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF): {
3053 struct iwl_scan_offload_match_info *notif = (void *)pkt->data;
3054
3055 if (d3_data->notif_received & IWL_D3_ND_MATCH_INFO) {
3056 IWL_ERR(mvm,
3057 "Got additional netdetect match info\n");
3058 break;
3059 }
3060
3061 d3_data->notif_received |= IWL_D3_ND_MATCH_INFO;
3062
3063 /* explicitly set this in the 'expected' as well */
3064 d3_data->notif_expected |= IWL_D3_ND_MATCH_INFO;
3065
3066 len = iwl_rx_packet_payload_len(pkt);
3067 iwl_mvm_nd_match_info_handler(mvm, d3_data, notif, len);
3068 break;
3069 }
3070 case WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION): {
3071 struct iwl_mvm_d3_end_notif *notif = (void *)pkt->data;
3072
3073 d3_data->d3_end_flags = __le32_to_cpu(notif->flags);
3074 d3_data->notif_received |= IWL_D3_NOTIF_D3_END_NOTIF;
3075
3076 break;
3077 }
3078 default:
3079 WARN_ON(1);
3080 }
3081
3082 return d3_data->notif_received == d3_data->notif_expected;
3083}
3084
3085static int iwl_mvm_resume_firmware(struct iwl_mvm *mvm, bool test)
3086{
3087 int ret;
3088 enum iwl_d3_status d3_status;
3089 struct iwl_host_cmd cmd = {
3090 .id = D0I3_END_CMD,
3091 .flags = CMD_WANT_SKB | CMD_SEND_IN_D3,
3092 };
3093 bool reset = fw_has_capa(&mvm->fw->ucode_capa,
3094 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
3095
3096 ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, !reset);
3097 if (ret)
3098 return ret;
3099
3100 if (d3_status != IWL_D3_STATUS_ALIVE) {
3101 IWL_INFO(mvm, "Device was reset during suspend\n");
3102 return -ENOENT;
3103 }
3104
3105 /*
3106 * We should trigger resume flow using command only for 22000 family
3107 * AX210 and above don't need the command since they have
3108 * the doorbell interrupt.
3109 */
3110 if (mvm->trans->trans_cfg->device_family <= IWL_DEVICE_FAMILY_22000 &&
3111 fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_D0I3_END_FIRST)) {
3112 ret = iwl_mvm_send_cmd(mvm, &cmd);
3113 if (ret < 0)
3114 IWL_ERR(mvm, "Failed to send D0I3_END_CMD first (%d)\n",
3115 ret);
3116 }
3117
3118 return ret;
3119}
3120
3121#define IWL_MVM_D3_NOTIF_TIMEOUT (HZ / 5)
3122
3123static int iwl_mvm_d3_notif_wait(struct iwl_mvm *mvm,
3124 struct iwl_d3_data *d3_data)
3125{
3126 static const u16 d3_resume_notif[] = {
3127 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION),
3128 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION),
3129 WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF),
3130 WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION)
3131 };
3132 struct iwl_notification_wait wait_d3_notif;
3133 int ret;
3134
3135 iwl_init_notification_wait(&mvm->notif_wait, &wait_d3_notif,
3136 d3_resume_notif, ARRAY_SIZE(d3_resume_notif),
3137 iwl_mvm_wait_d3_notif, d3_data);
3138
3139 ret = iwl_mvm_resume_firmware(mvm, d3_data->test);
3140 if (ret) {
3141 iwl_remove_notification(&mvm->notif_wait, &wait_d3_notif);
3142 return ret;
3143 }
3144
3145 return iwl_wait_notification(&mvm->notif_wait, &wait_d3_notif,
3146 IWL_MVM_D3_NOTIF_TIMEOUT);
3147}
3148
3149static inline bool iwl_mvm_d3_resume_notif_based(struct iwl_mvm *mvm)
3150{
3151 return iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
3152 WOWLAN_INFO_NOTIFICATION, 0) &&
3153 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
3154 WOWLAN_WAKE_PKT_NOTIFICATION, 0) &&
3155 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
3156 D3_END_NOTIFICATION, 0);
3157}
3158
3159static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test)
3160{
3161 struct ieee80211_vif *vif = NULL;
3162 int ret = 1;
3163 struct iwl_mvm_nd_results results = {};
3164 struct iwl_d3_data d3_data = {
3165 .test = test,
3166 .notif_expected =
3167 IWL_D3_NOTIF_WOWLAN_INFO |
3168 IWL_D3_NOTIF_D3_END_NOTIF,
3169 .nd_results_valid = false,
3170 .nd_results = &results,
3171 };
3172 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
3173 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
3174 bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa,
3175 IWL_UCODE_TLV_CAPA_D0I3_END_FIRST);
3176 bool resume_notif_based = iwl_mvm_d3_resume_notif_based(mvm);
3177 bool keep = false;
3178
3179 mutex_lock(&mvm->mutex);
3180
3181 mvm->last_reset_or_resume_time_jiffies = jiffies;
3182
3183 /* get the BSS vif pointer again */
3184 vif = iwl_mvm_get_bss_vif(mvm);
3185 if (IS_ERR_OR_NULL(vif))
3186 goto err;
3187
3188 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
3189
3190 if (iwl_mvm_check_rt_status(mvm, vif)) {
3191 set_bit(STATUS_FW_ERROR, &mvm->trans->status);
3192 iwl_mvm_dump_nic_error_log(mvm);
3193 iwl_dbg_tlv_time_point(&mvm->fwrt,
3194 IWL_FW_INI_TIME_POINT_FW_ASSERT, NULL);
3195 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert,
3196 false, 0);
3197 ret = 1;
3198 goto err;
3199 }
3200
3201 if (resume_notif_based) {
3202 d3_data.status = kzalloc(sizeof(*d3_data.status), GFP_KERNEL);
3203 if (!d3_data.status) {
3204 IWL_ERR(mvm, "Failed to allocate wowlan status\n");
3205 ret = -ENOMEM;
3206 goto err;
3207 }
3208
3209 ret = iwl_mvm_d3_notif_wait(mvm, &d3_data);
3210 if (ret)
3211 goto err;
3212 } else {
3213 ret = iwl_mvm_resume_firmware(mvm, test);
3214 if (ret < 0)
3215 goto err;
3216 }
3217
3218 /* after the successful handshake, we're out of D3 */
3219 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
3220
3221 /* when reset is required we can't send these following commands */
3222 if (d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)
3223 goto query_wakeup_reasons;
3224
3225 /*
3226 * Query the current location and source from the D3 firmware so we
3227 * can play it back when we re-intiailize the D0 firmware
3228 */
3229 iwl_mvm_update_changed_regdom(mvm);
3230
3231 /* Re-configure PPAG settings */
3232 iwl_mvm_ppag_send_cmd(mvm);
3233
3234 if (!unified_image)
3235 /* Re-configure default SAR profile */
3236 iwl_mvm_sar_select_profile(mvm, 1, 1);
3237
3238 if (mvm->net_detect && unified_image) {
3239 /* If this is a non-unified image, we restart the FW,
3240 * so no need to stop the netdetect scan. If that
3241 * fails, continue and try to get the wake-up reasons,
3242 * but trigger a HW restart by keeping a failure code
3243 * in ret.
3244 */
3245 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT,
3246 false);
3247 }
3248
3249query_wakeup_reasons:
3250 keep = iwl_mvm_choose_query_wakeup_reasons(mvm, vif, &d3_data);
3251 /* has unlocked the mutex, so skip that */
3252 goto out;
3253
3254err:
3255 mutex_unlock(&mvm->mutex);
3256out:
3257 if (d3_data.status)
3258 kfree(d3_data.status->wake_packet);
3259 kfree(d3_data.status);
3260 iwl_mvm_free_nd(mvm);
3261
3262 if (!d3_data.test && !mvm->net_detect)
3263 ieee80211_iterate_active_interfaces_mtx(mvm->hw,
3264 IEEE80211_IFACE_ITER_NORMAL,
3265 iwl_mvm_d3_disconnect_iter,
3266 keep ? vif : NULL);
3267
3268 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
3269
3270 /* no need to reset the device in unified images, if successful */
3271 if (unified_image && !ret) {
3272 /* nothing else to do if we already sent D0I3_END_CMD */
3273 if (d0i3_first)
3274 return 0;
3275
3276 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
3277 D3_END_NOTIFICATION, 0)) {
3278 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL);
3279 if (!ret)
3280 return 0;
3281 } else if (!(d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)) {
3282 return 0;
3283 }
3284 }
3285
3286 /*
3287 * Reconfigure the device in one of the following cases:
3288 * 1. We are not using a unified image
3289 * 2. We are using a unified image but had an error while exiting D3
3290 */
3291 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
3292
3293 /* regardless of what happened, we're now out of D3 */
3294 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
3295
3296 return 1;
3297}
3298
3299int iwl_mvm_resume(struct ieee80211_hw *hw)
3300{
3301 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3302 int ret;
3303
3304 ret = __iwl_mvm_resume(mvm, false);
3305
3306 iwl_mvm_resume_tcm(mvm);
3307
3308 iwl_fw_runtime_resume(&mvm->fwrt);
3309
3310 return ret;
3311}
3312
3313void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled)
3314{
3315 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3316
3317 device_set_wakeup_enable(mvm->trans->dev, enabled);
3318}
3319
3320#ifdef CONFIG_IWLWIFI_DEBUGFS
3321static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file)
3322{
3323 struct iwl_mvm *mvm = inode->i_private;
3324 int err;
3325
3326 if (mvm->d3_test_active)
3327 return -EBUSY;
3328
3329 file->private_data = inode->i_private;
3330
3331 iwl_mvm_pause_tcm(mvm, true);
3332
3333 iwl_fw_runtime_suspend(&mvm->fwrt);
3334
3335 /* start pseudo D3 */
3336 rtnl_lock();
3337 wiphy_lock(mvm->hw->wiphy);
3338 err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true);
3339 wiphy_unlock(mvm->hw->wiphy);
3340 rtnl_unlock();
3341 if (err > 0)
3342 err = -EINVAL;
3343 if (err)
3344 return err;
3345
3346 mvm->d3_test_active = true;
3347 mvm->keep_vif = NULL;
3348 return 0;
3349}
3350
3351static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf,
3352 size_t count, loff_t *ppos)
3353{
3354 struct iwl_mvm *mvm = file->private_data;
3355 u32 pme_asserted;
3356
3357 while (true) {
3358 /* read pme_ptr if available */
3359 if (mvm->d3_test_pme_ptr) {
3360 pme_asserted = iwl_trans_read_mem32(mvm->trans,
3361 mvm->d3_test_pme_ptr);
3362 if (pme_asserted)
3363 break;
3364 }
3365
3366 if (msleep_interruptible(100))
3367 break;
3368 }
3369
3370 return 0;
3371}
3372
3373static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac,
3374 struct ieee80211_vif *vif)
3375{
3376 /* skip the one we keep connection on */
3377 if (_data == vif)
3378 return;
3379
3380 if (vif->type == NL80211_IFTYPE_STATION)
3381 ieee80211_connection_loss(vif);
3382}
3383
3384static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file)
3385{
3386 struct iwl_mvm *mvm = inode->i_private;
3387 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
3388 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
3389
3390 mvm->d3_test_active = false;
3391
3392 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
3393
3394 rtnl_lock();
3395 wiphy_lock(mvm->hw->wiphy);
3396 __iwl_mvm_resume(mvm, true);
3397 wiphy_unlock(mvm->hw->wiphy);
3398 rtnl_unlock();
3399
3400 iwl_mvm_resume_tcm(mvm);
3401
3402 iwl_fw_runtime_resume(&mvm->fwrt);
3403
3404 iwl_abort_notification_waits(&mvm->notif_wait);
3405 if (!unified_image) {
3406 int remaining_time = 10;
3407
3408 ieee80211_restart_hw(mvm->hw);
3409
3410 /* wait for restart and disconnect all interfaces */
3411 while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
3412 remaining_time > 0) {
3413 remaining_time--;
3414 msleep(1000);
3415 }
3416
3417 if (remaining_time == 0)
3418 IWL_ERR(mvm, "Timed out waiting for HW restart!\n");
3419 }
3420
3421 ieee80211_iterate_active_interfaces_atomic(
3422 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
3423 iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif);
3424
3425 return 0;
3426}
3427
3428const struct file_operations iwl_dbgfs_d3_test_ops = {
3429 .llseek = no_llseek,
3430 .open = iwl_mvm_d3_test_open,
3431 .read = iwl_mvm_d3_test_read,
3432 .release = iwl_mvm_d3_test_release,
3433};
3434#endif
1/******************************************************************************
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
8 * Copyright(c) 2012 - 2014, 2018 - 2020 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
10 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of version 2 of the GNU General Public License as
14 * published by the Free Software Foundation.
15 *
16 * This program is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
20 *
21 * The full GNU General Public License is included in this distribution
22 * in the file called COPYING.
23 *
24 * Contact Information:
25 * Intel Linux Wireless <linuxwifi@intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 * BSD LICENSE
29 *
30 * Copyright(c) 2012 - 2014, 2018 - 2020 Intel Corporation. All rights reserved.
31 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
32 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
33 * All rights reserved.
34 *
35 * Redistribution and use in source and binary forms, with or without
36 * modification, are permitted provided that the following conditions
37 * are met:
38 *
39 * * Redistributions of source code must retain the above copyright
40 * notice, this list of conditions and the following disclaimer.
41 * * Redistributions in binary form must reproduce the above copyright
42 * notice, this list of conditions and the following disclaimer in
43 * the documentation and/or other materials provided with the
44 * distribution.
45 * * Neither the name Intel Corporation nor the names of its
46 * contributors may be used to endorse or promote products derived
47 * from this software without specific prior written permission.
48 *
49 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
50 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
51 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
52 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
53 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
54 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
55 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
56 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
57 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
58 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
59 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
60 *
61 *****************************************************************************/
62
63#include <linux/etherdevice.h>
64#include <linux/ip.h>
65#include <linux/fs.h>
66#include <net/cfg80211.h>
67#include <net/ipv6.h>
68#include <net/tcp.h>
69#include <net/addrconf.h>
70#include "iwl-modparams.h"
71#include "fw-api.h"
72#include "mvm.h"
73
74void iwl_mvm_set_rekey_data(struct ieee80211_hw *hw,
75 struct ieee80211_vif *vif,
76 struct cfg80211_gtk_rekey_data *data)
77{
78 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
79 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
80
81 mutex_lock(&mvm->mutex);
82
83 memcpy(mvmvif->rekey_data.kek, data->kek, NL80211_KEK_LEN);
84 memcpy(mvmvif->rekey_data.kck, data->kck, NL80211_KCK_LEN);
85 mvmvif->rekey_data.replay_ctr =
86 cpu_to_le64(be64_to_cpup((__be64 *)data->replay_ctr));
87 mvmvif->rekey_data.valid = true;
88
89 mutex_unlock(&mvm->mutex);
90}
91
92#if IS_ENABLED(CONFIG_IPV6)
93void iwl_mvm_ipv6_addr_change(struct ieee80211_hw *hw,
94 struct ieee80211_vif *vif,
95 struct inet6_dev *idev)
96{
97 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
98 struct inet6_ifaddr *ifa;
99 int idx = 0;
100
101 memset(mvmvif->tentative_addrs, 0, sizeof(mvmvif->tentative_addrs));
102
103 read_lock_bh(&idev->lock);
104 list_for_each_entry(ifa, &idev->addr_list, if_list) {
105 mvmvif->target_ipv6_addrs[idx] = ifa->addr;
106 if (ifa->flags & IFA_F_TENTATIVE)
107 __set_bit(idx, mvmvif->tentative_addrs);
108 idx++;
109 if (idx >= IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_MAX)
110 break;
111 }
112 read_unlock_bh(&idev->lock);
113
114 mvmvif->num_target_ipv6_addrs = idx;
115}
116#endif
117
118void iwl_mvm_set_default_unicast_key(struct ieee80211_hw *hw,
119 struct ieee80211_vif *vif, int idx)
120{
121 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
122
123 mvmvif->tx_key_idx = idx;
124}
125
126static void iwl_mvm_convert_p1k(u16 *p1k, __le16 *out)
127{
128 int i;
129
130 for (i = 0; i < IWL_P1K_SIZE; i++)
131 out[i] = cpu_to_le16(p1k[i]);
132}
133
134static const u8 *iwl_mvm_find_max_pn(struct ieee80211_key_conf *key,
135 struct iwl_mvm_key_pn *ptk_pn,
136 struct ieee80211_key_seq *seq,
137 int tid, int queues)
138{
139 const u8 *ret = seq->ccmp.pn;
140 int i;
141
142 /* get the PN from mac80211, used on the default queue */
143 ieee80211_get_key_rx_seq(key, tid, seq);
144
145 /* and use the internal data for the other queues */
146 for (i = 1; i < queues; i++) {
147 const u8 *tmp = ptk_pn->q[i].pn[tid];
148
149 if (memcmp(ret, tmp, IEEE80211_CCMP_PN_LEN) <= 0)
150 ret = tmp;
151 }
152
153 return ret;
154}
155
156struct wowlan_key_data {
157 struct iwl_wowlan_rsc_tsc_params_cmd *rsc_tsc;
158 struct iwl_wowlan_tkip_params_cmd *tkip;
159 bool error, use_rsc_tsc, use_tkip, configure_keys;
160 int wep_key_idx;
161};
162
163static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw,
164 struct ieee80211_vif *vif,
165 struct ieee80211_sta *sta,
166 struct ieee80211_key_conf *key,
167 void *_data)
168{
169 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
170 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
171 struct wowlan_key_data *data = _data;
172 struct aes_sc *aes_sc, *aes_tx_sc = NULL;
173 struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
174 struct iwl_p1k_cache *rx_p1ks;
175 u8 *rx_mic_key;
176 struct ieee80211_key_seq seq;
177 u32 cur_rx_iv32 = 0;
178 u16 p1k[IWL_P1K_SIZE];
179 int ret, i;
180
181 switch (key->cipher) {
182 case WLAN_CIPHER_SUITE_WEP40:
183 case WLAN_CIPHER_SUITE_WEP104: { /* hack it for now */
184 struct {
185 struct iwl_mvm_wep_key_cmd wep_key_cmd;
186 struct iwl_mvm_wep_key wep_key;
187 } __packed wkc = {
188 .wep_key_cmd.mac_id_n_color =
189 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
190 mvmvif->color)),
191 .wep_key_cmd.num_keys = 1,
192 /* firmware sets STA_KEY_FLG_WEP_13BYTES */
193 .wep_key_cmd.decryption_type = STA_KEY_FLG_WEP,
194 .wep_key.key_index = key->keyidx,
195 .wep_key.key_size = key->keylen,
196 };
197
198 /*
199 * This will fail -- the key functions don't set support
200 * pairwise WEP keys. However, that's better than silently
201 * failing WoWLAN. Or maybe not?
202 */
203 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
204 break;
205
206 memcpy(&wkc.wep_key.key[3], key->key, key->keylen);
207 if (key->keyidx == mvmvif->tx_key_idx) {
208 /* TX key must be at offset 0 */
209 wkc.wep_key.key_offset = 0;
210 } else {
211 /* others start at 1 */
212 data->wep_key_idx++;
213 wkc.wep_key.key_offset = data->wep_key_idx;
214 }
215
216 if (data->configure_keys) {
217 mutex_lock(&mvm->mutex);
218 ret = iwl_mvm_send_cmd_pdu(mvm, WEP_KEY, 0,
219 sizeof(wkc), &wkc);
220 data->error = ret != 0;
221
222 mvm->ptk_ivlen = key->iv_len;
223 mvm->ptk_icvlen = key->icv_len;
224 mvm->gtk_ivlen = key->iv_len;
225 mvm->gtk_icvlen = key->icv_len;
226 mutex_unlock(&mvm->mutex);
227 }
228
229 /* don't upload key again */
230 return;
231 }
232 default:
233 data->error = true;
234 return;
235 case WLAN_CIPHER_SUITE_AES_CMAC:
236 /*
237 * Ignore CMAC keys -- the WoWLAN firmware doesn't support them
238 * but we also shouldn't abort suspend due to that. It does have
239 * support for the IGTK key renewal, but doesn't really use the
240 * IGTK for anything. This means we could spuriously wake up or
241 * be deauthenticated, but that was considered acceptable.
242 */
243 return;
244 case WLAN_CIPHER_SUITE_TKIP:
245 if (sta) {
246 u64 pn64;
247
248 tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
249 tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
250
251 rx_p1ks = data->tkip->rx_uni;
252
253 pn64 = atomic64_read(&key->tx_pn);
254 tkip_tx_sc->iv16 = cpu_to_le16(TKIP_PN_TO_IV16(pn64));
255 tkip_tx_sc->iv32 = cpu_to_le32(TKIP_PN_TO_IV32(pn64));
256
257 ieee80211_get_tkip_p1k_iv(key, TKIP_PN_TO_IV32(pn64),
258 p1k);
259 iwl_mvm_convert_p1k(p1k, data->tkip->tx.p1k);
260
261 memcpy(data->tkip->mic_keys.tx,
262 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
263 IWL_MIC_KEY_SIZE);
264
265 rx_mic_key = data->tkip->mic_keys.rx_unicast;
266 } else {
267 tkip_sc =
268 data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc;
269 rx_p1ks = data->tkip->rx_multi;
270 rx_mic_key = data->tkip->mic_keys.rx_mcast;
271 }
272
273 /*
274 * For non-QoS this relies on the fact that both the uCode and
275 * mac80211 use TID 0 (as they need to to avoid replay attacks)
276 * for checking the IV in the frames.
277 */
278 for (i = 0; i < IWL_NUM_RSC; i++) {
279 ieee80211_get_key_rx_seq(key, i, &seq);
280 tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
281 tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
282 /* wrapping isn't allowed, AP must rekey */
283 if (seq.tkip.iv32 > cur_rx_iv32)
284 cur_rx_iv32 = seq.tkip.iv32;
285 }
286
287 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
288 cur_rx_iv32, p1k);
289 iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k);
290 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
291 cur_rx_iv32 + 1, p1k);
292 iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k);
293
294 memcpy(rx_mic_key,
295 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
296 IWL_MIC_KEY_SIZE);
297
298 data->use_tkip = true;
299 data->use_rsc_tsc = true;
300 break;
301 case WLAN_CIPHER_SUITE_CCMP:
302 if (sta) {
303 u64 pn64;
304
305 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
306 aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc;
307
308 pn64 = atomic64_read(&key->tx_pn);
309 aes_tx_sc->pn = cpu_to_le64(pn64);
310 } else {
311 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
312 }
313
314 /*
315 * For non-QoS this relies on the fact that both the uCode and
316 * mac80211/our RX code use TID 0 for checking the PN.
317 */
318 if (sta && iwl_mvm_has_new_rx_api(mvm)) {
319 struct iwl_mvm_sta *mvmsta;
320 struct iwl_mvm_key_pn *ptk_pn;
321 const u8 *pn;
322
323 mvmsta = iwl_mvm_sta_from_mac80211(sta);
324 ptk_pn = rcu_dereference_protected(
325 mvmsta->ptk_pn[key->keyidx],
326 lockdep_is_held(&mvm->mutex));
327 if (WARN_ON(!ptk_pn))
328 break;
329
330 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
331 pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i,
332 mvm->trans->num_rx_queues);
333 aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
334 ((u64)pn[4] << 8) |
335 ((u64)pn[3] << 16) |
336 ((u64)pn[2] << 24) |
337 ((u64)pn[1] << 32) |
338 ((u64)pn[0] << 40));
339 }
340 } else {
341 for (i = 0; i < IWL_NUM_RSC; i++) {
342 u8 *pn = seq.ccmp.pn;
343
344 ieee80211_get_key_rx_seq(key, i, &seq);
345 aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
346 ((u64)pn[4] << 8) |
347 ((u64)pn[3] << 16) |
348 ((u64)pn[2] << 24) |
349 ((u64)pn[1] << 32) |
350 ((u64)pn[0] << 40));
351 }
352 }
353 data->use_rsc_tsc = true;
354 break;
355 }
356
357 if (data->configure_keys) {
358 mutex_lock(&mvm->mutex);
359 /*
360 * The D3 firmware hardcodes the key offset 0 as the key it
361 * uses to transmit packets to the AP, i.e. the PTK.
362 */
363 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
364 mvm->ptk_ivlen = key->iv_len;
365 mvm->ptk_icvlen = key->icv_len;
366 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 0);
367 } else {
368 /*
369 * firmware only supports TSC/RSC for a single key,
370 * so if there are multiple keep overwriting them
371 * with new ones -- this relies on mac80211 doing
372 * list_add_tail().
373 */
374 mvm->gtk_ivlen = key->iv_len;
375 mvm->gtk_icvlen = key->icv_len;
376 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 1);
377 }
378 mutex_unlock(&mvm->mutex);
379 data->error = ret != 0;
380 }
381}
382
383static int iwl_mvm_send_patterns_v1(struct iwl_mvm *mvm,
384 struct cfg80211_wowlan *wowlan)
385{
386 struct iwl_wowlan_patterns_cmd_v1 *pattern_cmd;
387 struct iwl_host_cmd cmd = {
388 .id = WOWLAN_PATTERNS,
389 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
390 };
391 int i, err;
392
393 if (!wowlan->n_patterns)
394 return 0;
395
396 cmd.len[0] = struct_size(pattern_cmd, patterns, wowlan->n_patterns);
397
398 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
399 if (!pattern_cmd)
400 return -ENOMEM;
401
402 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
403
404 for (i = 0; i < wowlan->n_patterns; i++) {
405 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
406
407 memcpy(&pattern_cmd->patterns[i].mask,
408 wowlan->patterns[i].mask, mask_len);
409 memcpy(&pattern_cmd->patterns[i].pattern,
410 wowlan->patterns[i].pattern,
411 wowlan->patterns[i].pattern_len);
412 pattern_cmd->patterns[i].mask_size = mask_len;
413 pattern_cmd->patterns[i].pattern_size =
414 wowlan->patterns[i].pattern_len;
415 }
416
417 cmd.data[0] = pattern_cmd;
418 err = iwl_mvm_send_cmd(mvm, &cmd);
419 kfree(pattern_cmd);
420 return err;
421}
422
423static int iwl_mvm_send_patterns(struct iwl_mvm *mvm,
424 struct cfg80211_wowlan *wowlan)
425{
426 struct iwl_wowlan_patterns_cmd *pattern_cmd;
427 struct iwl_host_cmd cmd = {
428 .id = WOWLAN_PATTERNS,
429 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
430 };
431 int i, err;
432
433 if (!wowlan->n_patterns)
434 return 0;
435
436 cmd.len[0] = sizeof(*pattern_cmd) +
437 wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern_v2);
438
439 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
440 if (!pattern_cmd)
441 return -ENOMEM;
442
443 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
444
445 for (i = 0; i < wowlan->n_patterns; i++) {
446 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
447
448 pattern_cmd->patterns[i].pattern_type =
449 WOWLAN_PATTERN_TYPE_BITMASK;
450
451 memcpy(&pattern_cmd->patterns[i].u.bitmask.mask,
452 wowlan->patterns[i].mask, mask_len);
453 memcpy(&pattern_cmd->patterns[i].u.bitmask.pattern,
454 wowlan->patterns[i].pattern,
455 wowlan->patterns[i].pattern_len);
456 pattern_cmd->patterns[i].u.bitmask.mask_size = mask_len;
457 pattern_cmd->patterns[i].u.bitmask.pattern_size =
458 wowlan->patterns[i].pattern_len;
459 }
460
461 cmd.data[0] = pattern_cmd;
462 err = iwl_mvm_send_cmd(mvm, &cmd);
463 kfree(pattern_cmd);
464 return err;
465}
466
467static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
468 struct ieee80211_sta *ap_sta)
469{
470 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
471 struct ieee80211_chanctx_conf *ctx;
472 u8 chains_static, chains_dynamic;
473 struct cfg80211_chan_def chandef;
474 int ret, i;
475 struct iwl_binding_cmd_v1 binding_cmd = {};
476 struct iwl_time_quota_cmd quota_cmd = {};
477 struct iwl_time_quota_data *quota;
478 u32 status;
479
480 if (WARN_ON_ONCE(iwl_mvm_is_cdb_supported(mvm)))
481 return -EINVAL;
482
483 /* add back the PHY */
484 if (WARN_ON(!mvmvif->phy_ctxt))
485 return -EINVAL;
486
487 rcu_read_lock();
488 ctx = rcu_dereference(vif->chanctx_conf);
489 if (WARN_ON(!ctx)) {
490 rcu_read_unlock();
491 return -EINVAL;
492 }
493 chandef = ctx->def;
494 chains_static = ctx->rx_chains_static;
495 chains_dynamic = ctx->rx_chains_dynamic;
496 rcu_read_unlock();
497
498 ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt, &chandef,
499 chains_static, chains_dynamic);
500 if (ret)
501 return ret;
502
503 /* add back the MAC */
504 mvmvif->uploaded = false;
505
506 if (WARN_ON(!vif->bss_conf.assoc))
507 return -EINVAL;
508
509 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
510 if (ret)
511 return ret;
512
513 /* add back binding - XXX refactor? */
514 binding_cmd.id_and_color =
515 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
516 mvmvif->phy_ctxt->color));
517 binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD);
518 binding_cmd.phy =
519 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
520 mvmvif->phy_ctxt->color));
521 binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
522 mvmvif->color));
523 for (i = 1; i < MAX_MACS_IN_BINDING; i++)
524 binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID);
525
526 status = 0;
527 ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD,
528 IWL_BINDING_CMD_SIZE_V1, &binding_cmd,
529 &status);
530 if (ret) {
531 IWL_ERR(mvm, "Failed to add binding: %d\n", ret);
532 return ret;
533 }
534
535 if (status) {
536 IWL_ERR(mvm, "Binding command failed: %u\n", status);
537 return -EIO;
538 }
539
540 ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false, 0);
541 if (ret)
542 return ret;
543 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], ap_sta);
544
545 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
546 if (ret)
547 return ret;
548
549 /* and some quota */
550 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, 0);
551 quota->id_and_color =
552 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
553 mvmvif->phy_ctxt->color));
554 quota->quota = cpu_to_le32(IWL_MVM_MAX_QUOTA);
555 quota->max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA);
556
557 for (i = 1; i < MAX_BINDINGS; i++) {
558 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, i);
559 quota->id_and_color = cpu_to_le32(FW_CTXT_INVALID);
560 }
561
562 ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0,
563 iwl_mvm_quota_cmd_size(mvm), "a_cmd);
564 if (ret)
565 IWL_ERR(mvm, "Failed to send quota: %d\n", ret);
566
567 if (iwl_mvm_is_lar_supported(mvm) && iwl_mvm_init_fw_regd(mvm))
568 IWL_ERR(mvm, "Failed to initialize D3 LAR information\n");
569
570 return 0;
571}
572
573static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm,
574 struct ieee80211_vif *vif)
575{
576 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
577 struct iwl_nonqos_seq_query_cmd query_cmd = {
578 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET),
579 .mac_id_n_color =
580 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
581 mvmvif->color)),
582 };
583 struct iwl_host_cmd cmd = {
584 .id = NON_QOS_TX_COUNTER_CMD,
585 .flags = CMD_WANT_SKB,
586 };
587 int err;
588 u32 size;
589
590 cmd.data[0] = &query_cmd;
591 cmd.len[0] = sizeof(query_cmd);
592
593 err = iwl_mvm_send_cmd(mvm, &cmd);
594 if (err)
595 return err;
596
597 size = iwl_rx_packet_payload_len(cmd.resp_pkt);
598 if (size < sizeof(__le16)) {
599 err = -EINVAL;
600 } else {
601 err = le16_to_cpup((__le16 *)cmd.resp_pkt->data);
602 /* firmware returns next, not last-used seqno */
603 err = (u16) (err - 0x10);
604 }
605
606 iwl_free_resp(&cmd);
607 return err;
608}
609
610void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
611{
612 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
613 struct iwl_nonqos_seq_query_cmd query_cmd = {
614 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET),
615 .mac_id_n_color =
616 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
617 mvmvif->color)),
618 .value = cpu_to_le16(mvmvif->seqno),
619 };
620
621 /* return if called during restart, not resume from D3 */
622 if (!mvmvif->seqno_valid)
623 return;
624
625 mvmvif->seqno_valid = false;
626
627 if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0,
628 sizeof(query_cmd), &query_cmd))
629 IWL_ERR(mvm, "failed to set non-QoS seqno\n");
630}
631
632static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm)
633{
634 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
635
636 iwl_mvm_stop_device(mvm);
637 /*
638 * Set the HW restart bit -- this is mostly true as we're
639 * going to load new firmware and reprogram that, though
640 * the reprogramming is going to be manual to avoid adding
641 * all the MACs that aren't support.
642 * We don't have to clear up everything though because the
643 * reprogramming is manual. When we resume, we'll actually
644 * go through a proper restart sequence again to switch
645 * back to the runtime firmware image.
646 */
647 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
648
649 /* the fw is reset, so all the keys are cleared */
650 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
651
652 mvm->ptk_ivlen = 0;
653 mvm->ptk_icvlen = 0;
654 mvm->ptk_ivlen = 0;
655 mvm->ptk_icvlen = 0;
656
657 return iwl_mvm_load_d3_fw(mvm);
658}
659
660static int
661iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm,
662 struct cfg80211_wowlan *wowlan,
663 struct iwl_wowlan_config_cmd *wowlan_config_cmd,
664 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
665 struct ieee80211_sta *ap_sta)
666{
667 int ret;
668 struct iwl_mvm_sta *mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
669
670 /* TODO: wowlan_config_cmd->wowlan_ba_teardown_tids */
671
672 wowlan_config_cmd->is_11n_connection =
673 ap_sta->ht_cap.ht_supported;
674 wowlan_config_cmd->flags = ENABLE_L3_FILTERING |
675 ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING;
676
677 /* Query the last used seqno and set it */
678 ret = iwl_mvm_get_last_nonqos_seq(mvm, vif);
679 if (ret < 0)
680 return ret;
681
682 wowlan_config_cmd->non_qos_seq = cpu_to_le16(ret);
683
684 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, wowlan_config_cmd);
685
686 if (wowlan->disconnect)
687 wowlan_config_cmd->wakeup_filter |=
688 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
689 IWL_WOWLAN_WAKEUP_LINK_CHANGE);
690 if (wowlan->magic_pkt)
691 wowlan_config_cmd->wakeup_filter |=
692 cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET);
693 if (wowlan->gtk_rekey_failure)
694 wowlan_config_cmd->wakeup_filter |=
695 cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
696 if (wowlan->eap_identity_req)
697 wowlan_config_cmd->wakeup_filter |=
698 cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ);
699 if (wowlan->four_way_handshake)
700 wowlan_config_cmd->wakeup_filter |=
701 cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
702 if (wowlan->n_patterns)
703 wowlan_config_cmd->wakeup_filter |=
704 cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH);
705
706 if (wowlan->rfkill_release)
707 wowlan_config_cmd->wakeup_filter |=
708 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
709
710 if (wowlan->tcp) {
711 /*
712 * Set the "link change" (really "link lost") flag as well
713 * since that implies losing the TCP connection.
714 */
715 wowlan_config_cmd->wakeup_filter |=
716 cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS |
717 IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE |
718 IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET |
719 IWL_WOWLAN_WAKEUP_LINK_CHANGE);
720 }
721
722 if (wowlan->any) {
723 wowlan_config_cmd->wakeup_filter |=
724 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
725 IWL_WOWLAN_WAKEUP_LINK_CHANGE |
726 IWL_WOWLAN_WAKEUP_RX_FRAME |
727 IWL_WOWLAN_WAKEUP_BCN_FILTERING);
728 }
729
730 return 0;
731}
732
733static int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm,
734 struct ieee80211_vif *vif,
735 u32 cmd_flags)
736{
737 struct iwl_wowlan_kek_kck_material_cmd kek_kck_cmd = {};
738 struct iwl_wowlan_tkip_params_cmd tkip_cmd = {};
739 bool unified = fw_has_capa(&mvm->fw->ucode_capa,
740 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
741 struct wowlan_key_data key_data = {
742 .configure_keys = !unified,
743 .use_rsc_tsc = false,
744 .tkip = &tkip_cmd,
745 .use_tkip = false,
746 };
747 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
748 int ret;
749
750 key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
751 if (!key_data.rsc_tsc)
752 return -ENOMEM;
753
754 /*
755 * if we have to configure keys, call ieee80211_iter_keys(),
756 * as we need non-atomic context in order to take the
757 * required locks.
758 */
759 /*
760 * Note that currently we don't propagate cmd_flags
761 * to the iterator. In case of key_data.configure_keys,
762 * all the configured commands are SYNC, and
763 * iwl_mvm_wowlan_program_keys() will take care of
764 * locking/unlocking mvm->mutex.
765 */
766 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_program_keys,
767 &key_data);
768
769 if (key_data.error) {
770 ret = -EIO;
771 goto out;
772 }
773
774 if (key_data.use_rsc_tsc) {
775 ret = iwl_mvm_send_cmd_pdu(mvm,
776 WOWLAN_TSC_RSC_PARAM, cmd_flags,
777 sizeof(*key_data.rsc_tsc),
778 key_data.rsc_tsc);
779 if (ret)
780 goto out;
781 }
782
783 if (key_data.use_tkip &&
784 !fw_has_api(&mvm->fw->ucode_capa,
785 IWL_UCODE_TLV_API_TKIP_MIC_KEYS)) {
786 ret = iwl_mvm_send_cmd_pdu(mvm,
787 WOWLAN_TKIP_PARAM,
788 cmd_flags, sizeof(tkip_cmd),
789 &tkip_cmd);
790 if (ret)
791 goto out;
792 }
793
794 /* configure rekey data only if offloaded rekey is supported (d3) */
795 if (mvmvif->rekey_data.valid) {
796 memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
797 memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck,
798 NL80211_KCK_LEN);
799 kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
800 memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek,
801 NL80211_KEK_LEN);
802 kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
803 kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr;
804
805 ret = iwl_mvm_send_cmd_pdu(mvm,
806 WOWLAN_KEK_KCK_MATERIAL, cmd_flags,
807 sizeof(kek_kck_cmd),
808 &kek_kck_cmd);
809 if (ret)
810 goto out;
811 }
812 ret = 0;
813out:
814 kfree(key_data.rsc_tsc);
815 return ret;
816}
817
818static int
819iwl_mvm_wowlan_config(struct iwl_mvm *mvm,
820 struct cfg80211_wowlan *wowlan,
821 struct iwl_wowlan_config_cmd *wowlan_config_cmd,
822 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
823 struct ieee80211_sta *ap_sta)
824{
825 int ret;
826 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
827 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
828
829 mvm->offload_tid = wowlan_config_cmd->offloading_tid;
830
831 if (!unified_image) {
832 ret = iwl_mvm_switch_to_d3(mvm);
833 if (ret)
834 return ret;
835
836 ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta);
837 if (ret)
838 return ret;
839 }
840
841 /*
842 * This needs to be unlocked due to lock ordering
843 * constraints. Since we're in the suspend path
844 * that isn't really a problem though.
845 */
846 mutex_unlock(&mvm->mutex);
847 ret = iwl_mvm_wowlan_config_key_params(mvm, vif, CMD_ASYNC);
848 mutex_lock(&mvm->mutex);
849 if (ret)
850 return ret;
851
852 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0,
853 sizeof(*wowlan_config_cmd),
854 wowlan_config_cmd);
855 if (ret)
856 return ret;
857
858 if (fw_has_api(&mvm->fw->ucode_capa,
859 IWL_UCODE_TLV_API_WOWLAN_TCP_SYN_WAKE))
860 ret = iwl_mvm_send_patterns(mvm, wowlan);
861 else
862 ret = iwl_mvm_send_patterns_v1(mvm, wowlan);
863 if (ret)
864 return ret;
865
866 return iwl_mvm_send_proto_offload(mvm, vif, false, true, 0);
867}
868
869static int
870iwl_mvm_netdetect_config(struct iwl_mvm *mvm,
871 struct cfg80211_wowlan *wowlan,
872 struct cfg80211_sched_scan_request *nd_config,
873 struct ieee80211_vif *vif)
874{
875 struct iwl_wowlan_config_cmd wowlan_config_cmd = {};
876 int ret;
877 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
878 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
879
880 if (!unified_image) {
881 ret = iwl_mvm_switch_to_d3(mvm);
882 if (ret)
883 return ret;
884 } else {
885 /* In theory, we wouldn't have to stop a running sched
886 * scan in order to start another one (for
887 * net-detect). But in practice this doesn't seem to
888 * work properly, so stop any running sched_scan now.
889 */
890 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
891 if (ret)
892 return ret;
893 }
894
895 /* rfkill release can be either for wowlan or netdetect */
896 if (wowlan->rfkill_release)
897 wowlan_config_cmd.wakeup_filter |=
898 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
899
900 wowlan_config_cmd.sta_id = mvm->aux_sta.sta_id;
901
902 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0,
903 sizeof(wowlan_config_cmd),
904 &wowlan_config_cmd);
905 if (ret)
906 return ret;
907
908 ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies,
909 IWL_MVM_SCAN_NETDETECT);
910 if (ret)
911 return ret;
912
913 if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels))
914 return -EBUSY;
915
916 /* save the sched scan matchsets... */
917 if (nd_config->n_match_sets) {
918 mvm->nd_match_sets = kmemdup(nd_config->match_sets,
919 sizeof(*nd_config->match_sets) *
920 nd_config->n_match_sets,
921 GFP_KERNEL);
922 if (mvm->nd_match_sets)
923 mvm->n_nd_match_sets = nd_config->n_match_sets;
924 }
925
926 /* ...and the sched scan channels for later reporting */
927 mvm->nd_channels = kmemdup(nd_config->channels,
928 sizeof(*nd_config->channels) *
929 nd_config->n_channels,
930 GFP_KERNEL);
931 if (mvm->nd_channels)
932 mvm->n_nd_channels = nd_config->n_channels;
933
934 return 0;
935}
936
937static void iwl_mvm_free_nd(struct iwl_mvm *mvm)
938{
939 kfree(mvm->nd_match_sets);
940 mvm->nd_match_sets = NULL;
941 mvm->n_nd_match_sets = 0;
942 kfree(mvm->nd_channels);
943 mvm->nd_channels = NULL;
944 mvm->n_nd_channels = 0;
945}
946
947static int __iwl_mvm_suspend(struct ieee80211_hw *hw,
948 struct cfg80211_wowlan *wowlan,
949 bool test)
950{
951 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
952 struct ieee80211_vif *vif = NULL;
953 struct iwl_mvm_vif *mvmvif = NULL;
954 struct ieee80211_sta *ap_sta = NULL;
955 struct iwl_d3_manager_config d3_cfg_cmd_data = {
956 /*
957 * Program the minimum sleep time to 10 seconds, as many
958 * platforms have issues processing a wakeup signal while
959 * still being in the process of suspending.
960 */
961 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000),
962 };
963 struct iwl_host_cmd d3_cfg_cmd = {
964 .id = D3_CONFIG_CMD,
965 .flags = CMD_WANT_SKB,
966 .data[0] = &d3_cfg_cmd_data,
967 .len[0] = sizeof(d3_cfg_cmd_data),
968 };
969 int ret;
970 int len __maybe_unused;
971 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
972 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
973
974 if (!wowlan) {
975 /*
976 * mac80211 shouldn't get here, but for D3 test
977 * it doesn't warrant a warning
978 */
979 WARN_ON(!test);
980 return -EINVAL;
981 }
982
983 mutex_lock(&mvm->mutex);
984
985 set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
986
987 vif = iwl_mvm_get_bss_vif(mvm);
988 if (IS_ERR_OR_NULL(vif)) {
989 ret = 1;
990 goto out_noreset;
991 }
992
993 mvmvif = iwl_mvm_vif_from_mac80211(vif);
994
995 if (mvmvif->ap_sta_id == IWL_MVM_INVALID_STA) {
996 /* if we're not associated, this must be netdetect */
997 if (!wowlan->nd_config) {
998 ret = 1;
999 goto out_noreset;
1000 }
1001
1002 ret = iwl_mvm_netdetect_config(
1003 mvm, wowlan, wowlan->nd_config, vif);
1004 if (ret)
1005 goto out;
1006
1007 mvm->net_detect = true;
1008 } else {
1009 struct iwl_wowlan_config_cmd wowlan_config_cmd = {};
1010
1011 wowlan_config_cmd.sta_id = mvmvif->ap_sta_id;
1012
1013 ap_sta = rcu_dereference_protected(
1014 mvm->fw_id_to_mac_id[mvmvif->ap_sta_id],
1015 lockdep_is_held(&mvm->mutex));
1016 if (IS_ERR_OR_NULL(ap_sta)) {
1017 ret = -EINVAL;
1018 goto out_noreset;
1019 }
1020
1021 ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1022 vif, mvmvif, ap_sta);
1023 if (ret)
1024 goto out_noreset;
1025 ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1026 vif, mvmvif, ap_sta);
1027 if (ret)
1028 goto out;
1029
1030 mvm->net_detect = false;
1031 }
1032
1033 ret = iwl_mvm_power_update_device(mvm);
1034 if (ret)
1035 goto out;
1036
1037 ret = iwl_mvm_power_update_mac(mvm);
1038 if (ret)
1039 goto out;
1040
1041#ifdef CONFIG_IWLWIFI_DEBUGFS
1042 if (mvm->d3_wake_sysassert)
1043 d3_cfg_cmd_data.wakeup_flags |=
1044 cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR);
1045#endif
1046
1047 /*
1048 * Prior to 9000 device family the driver needs to stop the dbg
1049 * recording before entering D3. In later devices the FW stops the
1050 * recording automatically.
1051 */
1052 if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_9000)
1053 iwl_fw_dbg_stop_restart_recording(&mvm->fwrt, NULL, true);
1054
1055 /* must be last -- this switches firmware state */
1056 ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd);
1057 if (ret)
1058 goto out;
1059#ifdef CONFIG_IWLWIFI_DEBUGFS
1060 len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt);
1061 if (len >= sizeof(u32)) {
1062 mvm->d3_test_pme_ptr =
1063 le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data);
1064 }
1065#endif
1066 iwl_free_resp(&d3_cfg_cmd);
1067
1068 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1069
1070 ret = iwl_trans_d3_suspend(mvm->trans, test, !unified_image);
1071 out:
1072 if (ret < 0) {
1073 iwl_mvm_free_nd(mvm);
1074
1075 if (!unified_image) {
1076 if (mvm->fw_restart > 0) {
1077 mvm->fw_restart--;
1078 ieee80211_restart_hw(mvm->hw);
1079 }
1080 }
1081
1082 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
1083 }
1084 out_noreset:
1085 mutex_unlock(&mvm->mutex);
1086
1087 return ret;
1088}
1089
1090int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
1091{
1092 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1093 struct iwl_trans *trans = mvm->trans;
1094 int ret;
1095
1096 iwl_mvm_pause_tcm(mvm, true);
1097
1098 iwl_fw_runtime_suspend(&mvm->fwrt);
1099
1100 ret = iwl_trans_suspend(trans);
1101 if (ret)
1102 return ret;
1103
1104 trans->system_pm_mode = IWL_PLAT_PM_MODE_D3;
1105
1106 return __iwl_mvm_suspend(hw, wowlan, false);
1107}
1108
1109/* converted data from the different status responses */
1110struct iwl_wowlan_status_data {
1111 u16 pattern_number;
1112 u16 qos_seq_ctr[8];
1113 u32 wakeup_reasons;
1114 u32 wake_packet_length;
1115 u32 wake_packet_bufsize;
1116 const u8 *wake_packet;
1117};
1118
1119static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm,
1120 struct ieee80211_vif *vif,
1121 struct iwl_wowlan_status_data *status)
1122{
1123 struct sk_buff *pkt = NULL;
1124 struct cfg80211_wowlan_wakeup wakeup = {
1125 .pattern_idx = -1,
1126 };
1127 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
1128 u32 reasons = status->wakeup_reasons;
1129
1130 if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
1131 wakeup_report = NULL;
1132 goto report;
1133 }
1134
1135 pm_wakeup_event(mvm->dev, 0);
1136
1137 if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET)
1138 wakeup.magic_pkt = true;
1139
1140 if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN)
1141 wakeup.pattern_idx =
1142 status->pattern_number;
1143
1144 if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1145 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH))
1146 wakeup.disconnect = true;
1147
1148 if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)
1149 wakeup.gtk_rekey_failure = true;
1150
1151 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
1152 wakeup.rfkill_release = true;
1153
1154 if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST)
1155 wakeup.eap_identity_req = true;
1156
1157 if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE)
1158 wakeup.four_way_handshake = true;
1159
1160 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS)
1161 wakeup.tcp_connlost = true;
1162
1163 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE)
1164 wakeup.tcp_nomoretokens = true;
1165
1166 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET)
1167 wakeup.tcp_match = true;
1168
1169 if (status->wake_packet_bufsize) {
1170 int pktsize = status->wake_packet_bufsize;
1171 int pktlen = status->wake_packet_length;
1172 const u8 *pktdata = status->wake_packet;
1173 struct ieee80211_hdr *hdr = (void *)pktdata;
1174 int truncated = pktlen - pktsize;
1175
1176 /* this would be a firmware bug */
1177 if (WARN_ON_ONCE(truncated < 0))
1178 truncated = 0;
1179
1180 if (ieee80211_is_data(hdr->frame_control)) {
1181 int hdrlen = ieee80211_hdrlen(hdr->frame_control);
1182 int ivlen = 0, icvlen = 4; /* also FCS */
1183
1184 pkt = alloc_skb(pktsize, GFP_KERNEL);
1185 if (!pkt)
1186 goto report;
1187
1188 skb_put_data(pkt, pktdata, hdrlen);
1189 pktdata += hdrlen;
1190 pktsize -= hdrlen;
1191
1192 if (ieee80211_has_protected(hdr->frame_control)) {
1193 /*
1194 * This is unlocked and using gtk_i(c)vlen,
1195 * but since everything is under RTNL still
1196 * that's not really a problem - changing
1197 * it would be difficult.
1198 */
1199 if (is_multicast_ether_addr(hdr->addr1)) {
1200 ivlen = mvm->gtk_ivlen;
1201 icvlen += mvm->gtk_icvlen;
1202 } else {
1203 ivlen = mvm->ptk_ivlen;
1204 icvlen += mvm->ptk_icvlen;
1205 }
1206 }
1207
1208 /* if truncated, FCS/ICV is (partially) gone */
1209 if (truncated >= icvlen) {
1210 icvlen = 0;
1211 truncated -= icvlen;
1212 } else {
1213 icvlen -= truncated;
1214 truncated = 0;
1215 }
1216
1217 pktsize -= ivlen + icvlen;
1218 pktdata += ivlen;
1219
1220 skb_put_data(pkt, pktdata, pktsize);
1221
1222 if (ieee80211_data_to_8023(pkt, vif->addr, vif->type))
1223 goto report;
1224 wakeup.packet = pkt->data;
1225 wakeup.packet_present_len = pkt->len;
1226 wakeup.packet_len = pkt->len - truncated;
1227 wakeup.packet_80211 = false;
1228 } else {
1229 int fcslen = 4;
1230
1231 if (truncated >= 4) {
1232 truncated -= 4;
1233 fcslen = 0;
1234 } else {
1235 fcslen -= truncated;
1236 truncated = 0;
1237 }
1238 pktsize -= fcslen;
1239 wakeup.packet = status->wake_packet;
1240 wakeup.packet_present_len = pktsize;
1241 wakeup.packet_len = pktlen - truncated;
1242 wakeup.packet_80211 = true;
1243 }
1244 }
1245
1246 report:
1247 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
1248 kfree_skb(pkt);
1249}
1250
1251static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc,
1252 struct ieee80211_key_seq *seq)
1253{
1254 u64 pn;
1255
1256 pn = le64_to_cpu(sc->pn);
1257 seq->ccmp.pn[0] = pn >> 40;
1258 seq->ccmp.pn[1] = pn >> 32;
1259 seq->ccmp.pn[2] = pn >> 24;
1260 seq->ccmp.pn[3] = pn >> 16;
1261 seq->ccmp.pn[4] = pn >> 8;
1262 seq->ccmp.pn[5] = pn;
1263}
1264
1265static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc,
1266 struct ieee80211_key_seq *seq)
1267{
1268 seq->tkip.iv32 = le32_to_cpu(sc->iv32);
1269 seq->tkip.iv16 = le16_to_cpu(sc->iv16);
1270}
1271
1272static void iwl_mvm_set_aes_rx_seq(struct iwl_mvm *mvm, struct aes_sc *scs,
1273 struct ieee80211_sta *sta,
1274 struct ieee80211_key_conf *key)
1275{
1276 int tid;
1277
1278 BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS);
1279
1280 if (sta && iwl_mvm_has_new_rx_api(mvm)) {
1281 struct iwl_mvm_sta *mvmsta;
1282 struct iwl_mvm_key_pn *ptk_pn;
1283
1284 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1285
1286 ptk_pn = rcu_dereference_protected(mvmsta->ptk_pn[key->keyidx],
1287 lockdep_is_held(&mvm->mutex));
1288 if (WARN_ON(!ptk_pn))
1289 return;
1290
1291 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1292 struct ieee80211_key_seq seq = {};
1293 int i;
1294
1295 iwl_mvm_aes_sc_to_seq(&scs[tid], &seq);
1296 ieee80211_set_key_rx_seq(key, tid, &seq);
1297 for (i = 1; i < mvm->trans->num_rx_queues; i++)
1298 memcpy(ptk_pn->q[i].pn[tid],
1299 seq.ccmp.pn, IEEE80211_CCMP_PN_LEN);
1300 }
1301 } else {
1302 for (tid = 0; tid < IWL_NUM_RSC; tid++) {
1303 struct ieee80211_key_seq seq = {};
1304
1305 iwl_mvm_aes_sc_to_seq(&scs[tid], &seq);
1306 ieee80211_set_key_rx_seq(key, tid, &seq);
1307 }
1308 }
1309}
1310
1311static void iwl_mvm_set_tkip_rx_seq(struct tkip_sc *scs,
1312 struct ieee80211_key_conf *key)
1313{
1314 int tid;
1315
1316 BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS);
1317
1318 for (tid = 0; tid < IWL_NUM_RSC; tid++) {
1319 struct ieee80211_key_seq seq = {};
1320
1321 iwl_mvm_tkip_sc_to_seq(&scs[tid], &seq);
1322 ieee80211_set_key_rx_seq(key, tid, &seq);
1323 }
1324}
1325
1326static void iwl_mvm_set_key_rx_seq(struct iwl_mvm *mvm,
1327 struct ieee80211_key_conf *key,
1328 struct iwl_wowlan_status *status)
1329{
1330 union iwl_all_tsc_rsc *rsc = &status->gtk[0].rsc.all_tsc_rsc;
1331
1332 switch (key->cipher) {
1333 case WLAN_CIPHER_SUITE_CCMP:
1334 iwl_mvm_set_aes_rx_seq(mvm, rsc->aes.multicast_rsc, NULL, key);
1335 break;
1336 case WLAN_CIPHER_SUITE_TKIP:
1337 iwl_mvm_set_tkip_rx_seq(rsc->tkip.multicast_rsc, key);
1338 break;
1339 default:
1340 WARN_ON(1);
1341 }
1342}
1343
1344struct iwl_mvm_d3_gtk_iter_data {
1345 struct iwl_mvm *mvm;
1346 struct iwl_wowlan_status *status;
1347 void *last_gtk;
1348 u32 cipher;
1349 bool find_phase, unhandled_cipher;
1350 int num_keys;
1351};
1352
1353static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw,
1354 struct ieee80211_vif *vif,
1355 struct ieee80211_sta *sta,
1356 struct ieee80211_key_conf *key,
1357 void *_data)
1358{
1359 struct iwl_mvm_d3_gtk_iter_data *data = _data;
1360
1361 if (data->unhandled_cipher)
1362 return;
1363
1364 switch (key->cipher) {
1365 case WLAN_CIPHER_SUITE_WEP40:
1366 case WLAN_CIPHER_SUITE_WEP104:
1367 /* ignore WEP completely, nothing to do */
1368 return;
1369 case WLAN_CIPHER_SUITE_CCMP:
1370 case WLAN_CIPHER_SUITE_TKIP:
1371 /* we support these */
1372 break;
1373 default:
1374 /* everything else (even CMAC for MFP) - disconnect from AP */
1375 data->unhandled_cipher = true;
1376 return;
1377 }
1378
1379 data->num_keys++;
1380
1381 /*
1382 * pairwise key - update sequence counters only;
1383 * note that this assumes no TDLS sessions are active
1384 */
1385 if (sta) {
1386 struct ieee80211_key_seq seq = {};
1387 union iwl_all_tsc_rsc *sc =
1388 &data->status->gtk[0].rsc.all_tsc_rsc;
1389
1390 if (data->find_phase)
1391 return;
1392
1393 switch (key->cipher) {
1394 case WLAN_CIPHER_SUITE_CCMP:
1395 iwl_mvm_set_aes_rx_seq(data->mvm, sc->aes.unicast_rsc,
1396 sta, key);
1397 atomic64_set(&key->tx_pn, le64_to_cpu(sc->aes.tsc.pn));
1398 break;
1399 case WLAN_CIPHER_SUITE_TKIP:
1400 iwl_mvm_tkip_sc_to_seq(&sc->tkip.tsc, &seq);
1401 iwl_mvm_set_tkip_rx_seq(sc->tkip.unicast_rsc, key);
1402 atomic64_set(&key->tx_pn,
1403 (u64)seq.tkip.iv16 |
1404 ((u64)seq.tkip.iv32 << 16));
1405 break;
1406 }
1407
1408 /* that's it for this key */
1409 return;
1410 }
1411
1412 if (data->find_phase) {
1413 data->last_gtk = key;
1414 data->cipher = key->cipher;
1415 return;
1416 }
1417
1418 if (data->status->num_of_gtk_rekeys)
1419 ieee80211_remove_key(key);
1420 else if (data->last_gtk == key)
1421 iwl_mvm_set_key_rx_seq(data->mvm, key, data->status);
1422}
1423
1424static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm,
1425 struct ieee80211_vif *vif,
1426 struct iwl_wowlan_status *status)
1427{
1428 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1429 struct iwl_mvm_d3_gtk_iter_data gtkdata = {
1430 .mvm = mvm,
1431 .status = status,
1432 };
1433 u32 disconnection_reasons =
1434 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1435 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH;
1436
1437 if (!status || !vif->bss_conf.bssid)
1438 return false;
1439
1440 if (le32_to_cpu(status->wakeup_reasons) & disconnection_reasons)
1441 return false;
1442
1443 /* find last GTK that we used initially, if any */
1444 gtkdata.find_phase = true;
1445 ieee80211_iter_keys(mvm->hw, vif,
1446 iwl_mvm_d3_update_keys, >kdata);
1447 /* not trying to keep connections with MFP/unhandled ciphers */
1448 if (gtkdata.unhandled_cipher)
1449 return false;
1450 if (!gtkdata.num_keys)
1451 goto out;
1452 if (!gtkdata.last_gtk)
1453 return false;
1454
1455 /*
1456 * invalidate all other GTKs that might still exist and update
1457 * the one that we used
1458 */
1459 gtkdata.find_phase = false;
1460 ieee80211_iter_keys(mvm->hw, vif,
1461 iwl_mvm_d3_update_keys, >kdata);
1462
1463 if (status->num_of_gtk_rekeys) {
1464 struct ieee80211_key_conf *key;
1465 struct {
1466 struct ieee80211_key_conf conf;
1467 u8 key[32];
1468 } conf = {
1469 .conf.cipher = gtkdata.cipher,
1470 .conf.keyidx =
1471 iwlmvm_wowlan_gtk_idx(&status->gtk[0]),
1472 };
1473 __be64 replay_ctr;
1474
1475 switch (gtkdata.cipher) {
1476 case WLAN_CIPHER_SUITE_CCMP:
1477 conf.conf.keylen = WLAN_KEY_LEN_CCMP;
1478 memcpy(conf.conf.key, status->gtk[0].key,
1479 WLAN_KEY_LEN_CCMP);
1480 break;
1481 case WLAN_CIPHER_SUITE_TKIP:
1482 conf.conf.keylen = WLAN_KEY_LEN_TKIP;
1483 memcpy(conf.conf.key, status->gtk[0].key, 16);
1484 /* leave TX MIC key zeroed, we don't use it anyway */
1485 memcpy(conf.conf.key +
1486 NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
1487 status->gtk[0].tkip_mic_key, 8);
1488 break;
1489 }
1490
1491 key = ieee80211_gtk_rekey_add(vif, &conf.conf);
1492 if (IS_ERR(key))
1493 return false;
1494 iwl_mvm_set_key_rx_seq(mvm, key, status);
1495
1496 replay_ctr =
1497 cpu_to_be64(le64_to_cpu(status->replay_ctr));
1498
1499 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid,
1500 (void *)&replay_ctr, GFP_KERNEL);
1501 }
1502
1503out:
1504 mvmvif->seqno_valid = true;
1505 /* +0x10 because the set API expects next-to-use, not last-used */
1506 mvmvif->seqno = le16_to_cpu(status->non_qos_seq_ctr) + 0x10;
1507
1508 return true;
1509}
1510
1511struct iwl_wowlan_status *iwl_mvm_send_wowlan_get_status(struct iwl_mvm *mvm)
1512{
1513 struct iwl_wowlan_status_v7 *v7;
1514 struct iwl_wowlan_status *status;
1515 struct iwl_host_cmd cmd = {
1516 .id = WOWLAN_GET_STATUSES,
1517 .flags = CMD_WANT_SKB,
1518 };
1519 int ret, len, status_size, data_size;
1520 u8 notif_ver;
1521
1522 lockdep_assert_held(&mvm->mutex);
1523
1524 ret = iwl_mvm_send_cmd(mvm, &cmd);
1525 if (ret) {
1526 IWL_ERR(mvm, "failed to query wakeup status (%d)\n", ret);
1527 return ERR_PTR(ret);
1528 }
1529
1530 len = iwl_rx_packet_payload_len(cmd.resp_pkt);
1531 if (!fw_has_api(&mvm->fw->ucode_capa,
1532 IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL)) {
1533 struct iwl_wowlan_status_v6 *v6 = (void *)cmd.resp_pkt->data;
1534
1535 status_size = sizeof(*v6);
1536
1537 if (len < status_size) {
1538 IWL_ERR(mvm, "Invalid WoWLAN status response!\n");
1539 status = ERR_PTR(-EIO);
1540 goto out_free_resp;
1541 }
1542
1543 data_size = ALIGN(le32_to_cpu(v6->wake_packet_bufsize), 4);
1544
1545 if (len != (status_size + data_size)) {
1546 IWL_ERR(mvm, "Invalid WoWLAN status response!\n");
1547 status = ERR_PTR(-EIO);
1548 goto out_free_resp;
1549 }
1550
1551 status = kzalloc(sizeof(*status) + data_size, GFP_KERNEL);
1552 if (!status)
1553 goto out_free_resp;
1554
1555 BUILD_BUG_ON(sizeof(v6->gtk.decrypt_key) >
1556 sizeof(status->gtk[0].key));
1557 BUILD_BUG_ON(sizeof(v6->gtk.tkip_mic_key) >
1558 sizeof(status->gtk[0].tkip_mic_key));
1559
1560 /* copy GTK info to the right place */
1561 memcpy(status->gtk[0].key, v6->gtk.decrypt_key,
1562 sizeof(v6->gtk.decrypt_key));
1563 memcpy(status->gtk[0].tkip_mic_key, v6->gtk.tkip_mic_key,
1564 sizeof(v6->gtk.tkip_mic_key));
1565 memcpy(&status->gtk[0].rsc, &v6->gtk.rsc,
1566 sizeof(status->gtk[0].rsc));
1567
1568 /* hardcode the key length to 16 since v6 only supports 16 */
1569 status->gtk[0].key_len = 16;
1570
1571 /*
1572 * The key index only uses 2 bits (values 0 to 3) and
1573 * we always set bit 7 which means this is the
1574 * currently used key.
1575 */
1576 status->gtk[0].key_flags = v6->gtk.key_index | BIT(7);
1577
1578 status->replay_ctr = v6->replay_ctr;
1579
1580 /* everything starting from pattern_number is identical */
1581 memcpy(&status->pattern_number, &v6->pattern_number,
1582 offsetof(struct iwl_wowlan_status, wake_packet) -
1583 offsetof(struct iwl_wowlan_status, pattern_number) +
1584 data_size);
1585
1586 goto out_free_resp;
1587 }
1588
1589 v7 = (void *)cmd.resp_pkt->data;
1590 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
1591 WOWLAN_GET_STATUSES, 0);
1592
1593 status_size = sizeof(*status);
1594
1595 if (notif_ver == IWL_FW_CMD_VER_UNKNOWN || notif_ver < 9)
1596 status_size = sizeof(*v7);
1597
1598 if (len < status_size) {
1599 IWL_ERR(mvm, "Invalid WoWLAN status response!\n");
1600 status = ERR_PTR(-EIO);
1601 goto out_free_resp;
1602 }
1603 data_size = ALIGN(le32_to_cpu(v7->wake_packet_bufsize), 4);
1604
1605 if (len != (status_size + data_size)) {
1606 IWL_ERR(mvm, "Invalid WoWLAN status response!\n");
1607 status = ERR_PTR(-EIO);
1608 goto out_free_resp;
1609 }
1610
1611 status = kzalloc(sizeof(*status) + data_size, GFP_KERNEL);
1612 if (!status)
1613 goto out_free_resp;
1614
1615 memcpy(status, v7, status_size);
1616 memcpy(status->wake_packet, (u8 *)v7 + status_size, data_size);
1617
1618out_free_resp:
1619 iwl_free_resp(&cmd);
1620 return status;
1621}
1622
1623static struct iwl_wowlan_status *
1624iwl_mvm_get_wakeup_status(struct iwl_mvm *mvm)
1625{
1626 int ret;
1627
1628 /* only for tracing for now */
1629 ret = iwl_mvm_send_cmd_pdu(mvm, OFFLOADS_QUERY_CMD, 0, 0, NULL);
1630 if (ret)
1631 IWL_ERR(mvm, "failed to query offload statistics (%d)\n", ret);
1632
1633 return iwl_mvm_send_wowlan_get_status(mvm);
1634}
1635
1636/* releases the MVM mutex */
1637static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm,
1638 struct ieee80211_vif *vif)
1639{
1640 struct iwl_wowlan_status_data status;
1641 struct iwl_wowlan_status *fw_status;
1642 int i;
1643 bool keep;
1644 struct iwl_mvm_sta *mvm_ap_sta;
1645
1646 fw_status = iwl_mvm_get_wakeup_status(mvm);
1647 if (IS_ERR_OR_NULL(fw_status))
1648 goto out_unlock;
1649
1650 status.pattern_number = le16_to_cpu(fw_status->pattern_number);
1651 for (i = 0; i < 8; i++)
1652 status.qos_seq_ctr[i] =
1653 le16_to_cpu(fw_status->qos_seq_ctr[i]);
1654 status.wakeup_reasons = le32_to_cpu(fw_status->wakeup_reasons);
1655 status.wake_packet_length =
1656 le32_to_cpu(fw_status->wake_packet_length);
1657 status.wake_packet_bufsize =
1658 le32_to_cpu(fw_status->wake_packet_bufsize);
1659 status.wake_packet = fw_status->wake_packet;
1660
1661 /* still at hard-coded place 0 for D3 image */
1662 mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, 0);
1663 if (!mvm_ap_sta)
1664 goto out_free;
1665
1666 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1667 u16 seq = status.qos_seq_ctr[i];
1668 /* firmware stores last-used value, we store next value */
1669 seq += 0x10;
1670 mvm_ap_sta->tid_data[i].seq_number = seq;
1671 }
1672
1673 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000) {
1674 i = mvm->offload_tid;
1675 iwl_trans_set_q_ptrs(mvm->trans,
1676 mvm_ap_sta->tid_data[i].txq_id,
1677 mvm_ap_sta->tid_data[i].seq_number >> 4);
1678 }
1679
1680 /* now we have all the data we need, unlock to avoid mac80211 issues */
1681 mutex_unlock(&mvm->mutex);
1682
1683 iwl_mvm_report_wakeup_reasons(mvm, vif, &status);
1684
1685 keep = iwl_mvm_setup_connection_keep(mvm, vif, fw_status);
1686
1687 kfree(fw_status);
1688 return keep;
1689
1690out_free:
1691 kfree(fw_status);
1692out_unlock:
1693 mutex_unlock(&mvm->mutex);
1694 return false;
1695}
1696
1697#define ND_QUERY_BUF_LEN (sizeof(struct iwl_scan_offload_profile_match) * \
1698 IWL_SCAN_MAX_PROFILES)
1699
1700struct iwl_mvm_nd_query_results {
1701 u32 matched_profiles;
1702 u8 matches[ND_QUERY_BUF_LEN];
1703};
1704
1705static int
1706iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm,
1707 struct iwl_mvm_nd_query_results *results)
1708{
1709 struct iwl_scan_offload_profiles_query *query;
1710 struct iwl_host_cmd cmd = {
1711 .id = SCAN_OFFLOAD_PROFILES_QUERY_CMD,
1712 .flags = CMD_WANT_SKB,
1713 };
1714 int ret, len;
1715 size_t query_len, matches_len;
1716 int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw);
1717
1718 ret = iwl_mvm_send_cmd(mvm, &cmd);
1719 if (ret) {
1720 IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret);
1721 return ret;
1722 }
1723
1724 if (fw_has_api(&mvm->fw->ucode_capa,
1725 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
1726 query_len = sizeof(struct iwl_scan_offload_profiles_query);
1727 matches_len = sizeof(struct iwl_scan_offload_profile_match) *
1728 max_profiles;
1729 } else {
1730 query_len = sizeof(struct iwl_scan_offload_profiles_query_v1);
1731 matches_len = sizeof(struct iwl_scan_offload_profile_match_v1) *
1732 max_profiles;
1733 }
1734
1735 len = iwl_rx_packet_payload_len(cmd.resp_pkt);
1736 if (len < query_len) {
1737 IWL_ERR(mvm, "Invalid scan offload profiles query response!\n");
1738 ret = -EIO;
1739 goto out_free_resp;
1740 }
1741
1742 query = (void *)cmd.resp_pkt->data;
1743
1744 results->matched_profiles = le32_to_cpu(query->matched_profiles);
1745 memcpy(results->matches, query->matches, matches_len);
1746
1747#ifdef CONFIG_IWLWIFI_DEBUGFS
1748 mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done);
1749#endif
1750
1751out_free_resp:
1752 iwl_free_resp(&cmd);
1753 return ret;
1754}
1755
1756static int iwl_mvm_query_num_match_chans(struct iwl_mvm *mvm,
1757 struct iwl_mvm_nd_query_results *query,
1758 int idx)
1759{
1760 int n_chans = 0, i;
1761
1762 if (fw_has_api(&mvm->fw->ucode_capa,
1763 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
1764 struct iwl_scan_offload_profile_match *matches =
1765 (struct iwl_scan_offload_profile_match *)query->matches;
1766
1767 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; i++)
1768 n_chans += hweight8(matches[idx].matching_channels[i]);
1769 } else {
1770 struct iwl_scan_offload_profile_match_v1 *matches =
1771 (struct iwl_scan_offload_profile_match_v1 *)query->matches;
1772
1773 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1; i++)
1774 n_chans += hweight8(matches[idx].matching_channels[i]);
1775 }
1776
1777 return n_chans;
1778}
1779
1780static void iwl_mvm_query_set_freqs(struct iwl_mvm *mvm,
1781 struct iwl_mvm_nd_query_results *query,
1782 struct cfg80211_wowlan_nd_match *match,
1783 int idx)
1784{
1785 int i;
1786
1787 if (fw_has_api(&mvm->fw->ucode_capa,
1788 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
1789 struct iwl_scan_offload_profile_match *matches =
1790 (struct iwl_scan_offload_profile_match *)query->matches;
1791
1792 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; i++)
1793 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
1794 match->channels[match->n_channels++] =
1795 mvm->nd_channels[i]->center_freq;
1796 } else {
1797 struct iwl_scan_offload_profile_match_v1 *matches =
1798 (struct iwl_scan_offload_profile_match_v1 *)query->matches;
1799
1800 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1 * 8; i++)
1801 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
1802 match->channels[match->n_channels++] =
1803 mvm->nd_channels[i]->center_freq;
1804 }
1805}
1806
1807static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm,
1808 struct ieee80211_vif *vif)
1809{
1810 struct cfg80211_wowlan_nd_info *net_detect = NULL;
1811 struct cfg80211_wowlan_wakeup wakeup = {
1812 .pattern_idx = -1,
1813 };
1814 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
1815 struct iwl_mvm_nd_query_results query;
1816 struct iwl_wowlan_status *fw_status;
1817 unsigned long matched_profiles;
1818 u32 reasons = 0;
1819 int i, n_matches, ret;
1820
1821 fw_status = iwl_mvm_get_wakeup_status(mvm);
1822 if (!IS_ERR_OR_NULL(fw_status)) {
1823 reasons = le32_to_cpu(fw_status->wakeup_reasons);
1824 kfree(fw_status);
1825 }
1826
1827 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
1828 wakeup.rfkill_release = true;
1829
1830 if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS)
1831 goto out;
1832
1833 ret = iwl_mvm_netdetect_query_results(mvm, &query);
1834 if (ret || !query.matched_profiles) {
1835 wakeup_report = NULL;
1836 goto out;
1837 }
1838
1839 matched_profiles = query.matched_profiles;
1840 if (mvm->n_nd_match_sets) {
1841 n_matches = hweight_long(matched_profiles);
1842 } else {
1843 IWL_ERR(mvm, "no net detect match information available\n");
1844 n_matches = 0;
1845 }
1846
1847 net_detect = kzalloc(struct_size(net_detect, matches, n_matches),
1848 GFP_KERNEL);
1849 if (!net_detect || !n_matches)
1850 goto out_report_nd;
1851
1852 for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) {
1853 struct cfg80211_wowlan_nd_match *match;
1854 int idx, n_channels = 0;
1855
1856 n_channels = iwl_mvm_query_num_match_chans(mvm, &query, i);
1857
1858 match = kzalloc(struct_size(match, channels, n_channels),
1859 GFP_KERNEL);
1860 if (!match)
1861 goto out_report_nd;
1862
1863 net_detect->matches[net_detect->n_matches++] = match;
1864
1865 /* We inverted the order of the SSIDs in the scan
1866 * request, so invert the index here.
1867 */
1868 idx = mvm->n_nd_match_sets - i - 1;
1869 match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len;
1870 memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid,
1871 match->ssid.ssid_len);
1872
1873 if (mvm->n_nd_channels < n_channels)
1874 continue;
1875
1876 iwl_mvm_query_set_freqs(mvm, &query, match, i);
1877 }
1878
1879out_report_nd:
1880 wakeup.net_detect = net_detect;
1881out:
1882 iwl_mvm_free_nd(mvm);
1883
1884 mutex_unlock(&mvm->mutex);
1885 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
1886
1887 if (net_detect) {
1888 for (i = 0; i < net_detect->n_matches; i++)
1889 kfree(net_detect->matches[i]);
1890 kfree(net_detect);
1891 }
1892}
1893
1894static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac,
1895 struct ieee80211_vif *vif)
1896{
1897 /* skip the one we keep connection on */
1898 if (data == vif)
1899 return;
1900
1901 if (vif->type == NL80211_IFTYPE_STATION)
1902 ieee80211_resume_disconnect(vif);
1903}
1904
1905static bool iwl_mvm_rt_status(struct iwl_trans *trans, u32 base, u32 *err_id)
1906{
1907 struct error_table_start {
1908 /* cf. struct iwl_error_event_table */
1909 u32 valid;
1910 __le32 err_id;
1911 } err_info;
1912
1913 if (!base)
1914 return false;
1915
1916 iwl_trans_read_mem_bytes(trans, base,
1917 &err_info, sizeof(err_info));
1918 if (err_info.valid && err_id)
1919 *err_id = le32_to_cpu(err_info.err_id);
1920
1921 return !!err_info.valid;
1922}
1923
1924static bool iwl_mvm_check_rt_status(struct iwl_mvm *mvm,
1925 struct ieee80211_vif *vif)
1926{
1927 u32 err_id;
1928
1929 /* check for lmac1 error */
1930 if (iwl_mvm_rt_status(mvm->trans,
1931 mvm->trans->dbg.lmac_error_event_table[0],
1932 &err_id)) {
1933 if (err_id == RF_KILL_INDICATOR_FOR_WOWLAN) {
1934 struct cfg80211_wowlan_wakeup wakeup = {
1935 .rfkill_release = true,
1936 };
1937 ieee80211_report_wowlan_wakeup(vif, &wakeup,
1938 GFP_KERNEL);
1939 }
1940 return true;
1941 }
1942
1943 /* check if we have lmac2 set and check for error */
1944 if (iwl_mvm_rt_status(mvm->trans,
1945 mvm->trans->dbg.lmac_error_event_table[1], NULL))
1946 return true;
1947
1948 /* check for umac error */
1949 if (iwl_mvm_rt_status(mvm->trans,
1950 mvm->trans->dbg.umac_error_event_table, NULL))
1951 return true;
1952
1953 return false;
1954}
1955
1956static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test)
1957{
1958 struct ieee80211_vif *vif = NULL;
1959 int ret = 1;
1960 enum iwl_d3_status d3_status;
1961 bool keep = false;
1962 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1963 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1964 bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa,
1965 IWL_UCODE_TLV_CAPA_D0I3_END_FIRST);
1966
1967 mutex_lock(&mvm->mutex);
1968
1969 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
1970
1971 /* get the BSS vif pointer again */
1972 vif = iwl_mvm_get_bss_vif(mvm);
1973 if (IS_ERR_OR_NULL(vif))
1974 goto err;
1975
1976 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
1977
1978 if (iwl_mvm_check_rt_status(mvm, vif)) {
1979 set_bit(STATUS_FW_ERROR, &mvm->trans->status);
1980 iwl_mvm_dump_nic_error_log(mvm);
1981 iwl_dbg_tlv_time_point(&mvm->fwrt,
1982 IWL_FW_INI_TIME_POINT_FW_ASSERT, NULL);
1983 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert,
1984 false, 0);
1985 ret = 1;
1986 goto err;
1987 }
1988
1989 iwl_dbg_tlv_time_point(&mvm->fwrt, IWL_FW_INI_TIME_POINT_HOST_D3_END,
1990 NULL);
1991
1992 ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, !unified_image);
1993 if (ret)
1994 goto err;
1995
1996 if (d3_status != IWL_D3_STATUS_ALIVE) {
1997 IWL_INFO(mvm, "Device was reset during suspend\n");
1998 goto err;
1999 }
2000
2001 if (d0i3_first) {
2002 struct iwl_host_cmd cmd = {
2003 .id = D0I3_END_CMD,
2004 .flags = CMD_WANT_SKB,
2005 };
2006 int len;
2007
2008 ret = iwl_mvm_send_cmd(mvm, &cmd);
2009 if (ret < 0) {
2010 IWL_ERR(mvm, "Failed to send D0I3_END_CMD first (%d)\n",
2011 ret);
2012 goto err;
2013 }
2014 switch (mvm->cmd_ver.d0i3_resp) {
2015 case 0:
2016 break;
2017 case 1:
2018 len = iwl_rx_packet_payload_len(cmd.resp_pkt);
2019 if (len != sizeof(u32)) {
2020 IWL_ERR(mvm,
2021 "Error with D0I3_END_CMD response size (%d)\n",
2022 len);
2023 goto err;
2024 }
2025 if (IWL_D0I3_RESET_REQUIRE &
2026 le32_to_cpu(*(__le32 *)cmd.resp_pkt->data)) {
2027 iwl_write32(mvm->trans, CSR_RESET,
2028 CSR_RESET_REG_FLAG_FORCE_NMI);
2029 iwl_free_resp(&cmd);
2030 }
2031 break;
2032 default:
2033 WARN_ON(1);
2034 }
2035 }
2036
2037 /*
2038 * Query the current location and source from the D3 firmware so we
2039 * can play it back when we re-intiailize the D0 firmware
2040 */
2041 iwl_mvm_update_changed_regdom(mvm);
2042
2043 /* Re-configure PPAG settings */
2044 iwl_mvm_ppag_send_cmd(mvm);
2045
2046 if (!unified_image)
2047 /* Re-configure default SAR profile */
2048 iwl_mvm_sar_select_profile(mvm, 1, 1);
2049
2050 if (mvm->net_detect) {
2051 /* If this is a non-unified image, we restart the FW,
2052 * so no need to stop the netdetect scan. If that
2053 * fails, continue and try to get the wake-up reasons,
2054 * but trigger a HW restart by keeping a failure code
2055 * in ret.
2056 */
2057 if (unified_image)
2058 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT,
2059 false);
2060
2061 iwl_mvm_query_netdetect_reasons(mvm, vif);
2062 /* has unlocked the mutex, so skip that */
2063 goto out;
2064 } else {
2065 keep = iwl_mvm_query_wakeup_reasons(mvm, vif);
2066#ifdef CONFIG_IWLWIFI_DEBUGFS
2067 if (keep)
2068 mvm->keep_vif = vif;
2069#endif
2070 /* has unlocked the mutex, so skip that */
2071 goto out_iterate;
2072 }
2073
2074err:
2075 iwl_mvm_free_nd(mvm);
2076 mutex_unlock(&mvm->mutex);
2077
2078out_iterate:
2079 if (!test)
2080 ieee80211_iterate_active_interfaces_rtnl(mvm->hw,
2081 IEEE80211_IFACE_ITER_NORMAL,
2082 iwl_mvm_d3_disconnect_iter, keep ? vif : NULL);
2083
2084out:
2085 /* no need to reset the device in unified images, if successful */
2086 if (unified_image && !ret) {
2087 /* nothing else to do if we already sent D0I3_END_CMD */
2088 if (d0i3_first)
2089 return 0;
2090
2091 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL);
2092 if (!ret)
2093 return 0;
2094 }
2095
2096 /*
2097 * Reconfigure the device in one of the following cases:
2098 * 1. We are not using a unified image
2099 * 2. We are using a unified image but had an error while exiting D3
2100 */
2101 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
2102
2103 return 1;
2104}
2105
2106static int iwl_mvm_resume_d3(struct iwl_mvm *mvm)
2107{
2108 iwl_trans_resume(mvm->trans);
2109
2110 return __iwl_mvm_resume(mvm, false);
2111}
2112
2113int iwl_mvm_resume(struct ieee80211_hw *hw)
2114{
2115 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2116 int ret;
2117
2118 ret = iwl_mvm_resume_d3(mvm);
2119
2120 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
2121
2122 iwl_mvm_resume_tcm(mvm);
2123
2124 iwl_fw_runtime_resume(&mvm->fwrt);
2125
2126 return ret;
2127}
2128
2129void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled)
2130{
2131 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2132
2133 device_set_wakeup_enable(mvm->trans->dev, enabled);
2134}
2135
2136#ifdef CONFIG_IWLWIFI_DEBUGFS
2137static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file)
2138{
2139 struct iwl_mvm *mvm = inode->i_private;
2140 int err;
2141
2142 if (mvm->d3_test_active)
2143 return -EBUSY;
2144
2145 file->private_data = inode->i_private;
2146
2147 synchronize_net();
2148
2149 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_D3;
2150
2151 iwl_mvm_pause_tcm(mvm, true);
2152
2153 iwl_fw_runtime_suspend(&mvm->fwrt);
2154
2155 /* start pseudo D3 */
2156 rtnl_lock();
2157 err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true);
2158 rtnl_unlock();
2159 if (err > 0)
2160 err = -EINVAL;
2161 if (err)
2162 return err;
2163
2164 mvm->d3_test_active = true;
2165 mvm->keep_vif = NULL;
2166 return 0;
2167}
2168
2169static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf,
2170 size_t count, loff_t *ppos)
2171{
2172 struct iwl_mvm *mvm = file->private_data;
2173 u32 pme_asserted;
2174
2175 while (true) {
2176 /* read pme_ptr if available */
2177 if (mvm->d3_test_pme_ptr) {
2178 pme_asserted = iwl_trans_read_mem32(mvm->trans,
2179 mvm->d3_test_pme_ptr);
2180 if (pme_asserted)
2181 break;
2182 }
2183
2184 if (msleep_interruptible(100))
2185 break;
2186 }
2187
2188 return 0;
2189}
2190
2191static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac,
2192 struct ieee80211_vif *vif)
2193{
2194 /* skip the one we keep connection on */
2195 if (_data == vif)
2196 return;
2197
2198 if (vif->type == NL80211_IFTYPE_STATION)
2199 ieee80211_connection_loss(vif);
2200}
2201
2202static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file)
2203{
2204 struct iwl_mvm *mvm = inode->i_private;
2205 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
2206 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2207
2208 mvm->d3_test_active = false;
2209
2210 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
2211
2212 rtnl_lock();
2213 __iwl_mvm_resume(mvm, true);
2214 rtnl_unlock();
2215
2216 iwl_mvm_resume_tcm(mvm);
2217
2218 iwl_fw_runtime_resume(&mvm->fwrt);
2219
2220 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
2221
2222 iwl_abort_notification_waits(&mvm->notif_wait);
2223 if (!unified_image) {
2224 int remaining_time = 10;
2225
2226 ieee80211_restart_hw(mvm->hw);
2227
2228 /* wait for restart and disconnect all interfaces */
2229 while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2230 remaining_time > 0) {
2231 remaining_time--;
2232 msleep(1000);
2233 }
2234
2235 if (remaining_time == 0)
2236 IWL_ERR(mvm, "Timed out waiting for HW restart!\n");
2237 }
2238
2239 ieee80211_iterate_active_interfaces_atomic(
2240 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
2241 iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif);
2242
2243 return 0;
2244}
2245
2246const struct file_operations iwl_dbgfs_d3_test_ops = {
2247 .llseek = no_llseek,
2248 .open = iwl_mvm_d3_test_open,
2249 .read = iwl_mvm_d3_test_read,
2250 .release = iwl_mvm_d3_test_release,
2251};
2252#endif