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 #if defined(__FreeBSD__)
11 #include <linux/string.h>
12 #endif
13 #include <net/cfg80211.h>
14 #include <net/ipv6.h>
15 #include <net/tcp.h>
16 #include <net/addrconf.h>
17 #include "iwl-modparams.h"
18 #include "fw-api.h"
19 #include "mvm.h"
20 #include "fw/img.h"
21
iwl_mvm_set_rekey_data(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct cfg80211_gtk_rekey_data * data)22 void iwl_mvm_set_rekey_data(struct ieee80211_hw *hw,
23 struct ieee80211_vif *vif,
24 struct cfg80211_gtk_rekey_data *data)
25 {
26 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
27 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
28
29 mutex_lock(&mvm->mutex);
30
31 mvmvif->rekey_data.kek_len = data->kek_len;
32 mvmvif->rekey_data.kck_len = data->kck_len;
33 memcpy(mvmvif->rekey_data.kek, data->kek, data->kek_len);
34 memcpy(mvmvif->rekey_data.kck, data->kck, data->kck_len);
35 mvmvif->rekey_data.akm = data->akm & 0xFF;
36 mvmvif->rekey_data.replay_ctr =
37 cpu_to_le64(be64_to_cpup((const __be64 *)data->replay_ctr));
38 mvmvif->rekey_data.valid = true;
39
40 mutex_unlock(&mvm->mutex);
41 }
42
43 #if IS_ENABLED(CONFIG_IPV6)
iwl_mvm_ipv6_addr_change(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct inet6_dev * idev)44 void iwl_mvm_ipv6_addr_change(struct ieee80211_hw *hw,
45 struct ieee80211_vif *vif,
46 struct inet6_dev *idev)
47 {
48 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
49 struct inet6_ifaddr *ifa;
50 int idx = 0;
51
52 memset(mvmvif->tentative_addrs, 0, sizeof(mvmvif->tentative_addrs));
53
54 read_lock_bh(&idev->lock);
55 list_for_each_entry(ifa, &idev->addr_list, if_list) {
56 mvmvif->target_ipv6_addrs[idx] = ifa->addr;
57 if (ifa->flags & IFA_F_TENTATIVE)
58 __set_bit(idx, mvmvif->tentative_addrs);
59 idx++;
60 if (idx >= IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_MAX)
61 break;
62 }
63 read_unlock_bh(&idev->lock);
64
65 mvmvif->num_target_ipv6_addrs = idx;
66 }
67 #endif
68
iwl_mvm_set_default_unicast_key(struct ieee80211_hw * hw,struct ieee80211_vif * vif,int idx)69 void iwl_mvm_set_default_unicast_key(struct ieee80211_hw *hw,
70 struct ieee80211_vif *vif, int idx)
71 {
72 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
73
74 mvmvif->tx_key_idx = idx;
75 }
76
iwl_mvm_convert_p1k(u16 * p1k,__le16 * out)77 static void iwl_mvm_convert_p1k(u16 *p1k, __le16 *out)
78 {
79 int i;
80
81 for (i = 0; i < IWL_P1K_SIZE; i++)
82 out[i] = cpu_to_le16(p1k[i]);
83 }
84
iwl_mvm_find_max_pn(struct ieee80211_key_conf * key,struct iwl_mvm_key_pn * ptk_pn,struct ieee80211_key_seq * seq,int tid,int queues)85 static const u8 *iwl_mvm_find_max_pn(struct ieee80211_key_conf *key,
86 struct iwl_mvm_key_pn *ptk_pn,
87 struct ieee80211_key_seq *seq,
88 int tid, int queues)
89 {
90 const u8 *ret = seq->ccmp.pn;
91 int i;
92
93 /* get the PN from mac80211, used on the default queue */
94 ieee80211_get_key_rx_seq(key, tid, seq);
95
96 /* and use the internal data for the other queues */
97 for (i = 1; i < queues; i++) {
98 const u8 *tmp = ptk_pn->q[i].pn[tid];
99
100 if (memcmp(ret, tmp, IEEE80211_CCMP_PN_LEN) <= 0)
101 ret = tmp;
102 }
103
104 return ret;
105 }
106
107 struct wowlan_key_reprogram_data {
108 bool error;
109 int wep_key_idx;
110 };
111
iwl_mvm_wowlan_program_keys(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key,void * _data)112 static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw,
113 struct ieee80211_vif *vif,
114 struct ieee80211_sta *sta,
115 struct ieee80211_key_conf *key,
116 void *_data)
117 {
118 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
119 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
120 struct wowlan_key_reprogram_data *data = _data;
121 int ret;
122
123 switch (key->cipher) {
124 case WLAN_CIPHER_SUITE_WEP40:
125 case WLAN_CIPHER_SUITE_WEP104: { /* hack it for now */
126 struct {
127 struct iwl_mvm_wep_key_cmd wep_key_cmd;
128 struct iwl_mvm_wep_key wep_key;
129 } __packed wkc = {
130 .wep_key_cmd.mac_id_n_color =
131 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
132 mvmvif->color)),
133 .wep_key_cmd.num_keys = 1,
134 /* firmware sets STA_KEY_FLG_WEP_13BYTES */
135 .wep_key_cmd.decryption_type = STA_KEY_FLG_WEP,
136 .wep_key.key_index = key->keyidx,
137 .wep_key.key_size = key->keylen,
138 };
139
140 /*
141 * This will fail -- the key functions don't set support
142 * pairwise WEP keys. However, that's better than silently
143 * failing WoWLAN. Or maybe not?
144 */
145 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
146 break;
147
148 memcpy(&wkc.wep_key.key[3], key->key, key->keylen);
149 if (key->keyidx == mvmvif->tx_key_idx) {
150 /* TX key must be at offset 0 */
151 wkc.wep_key.key_offset = 0;
152 } else {
153 /* others start at 1 */
154 data->wep_key_idx++;
155 wkc.wep_key.key_offset = data->wep_key_idx;
156 }
157
158 mutex_lock(&mvm->mutex);
159 ret = iwl_mvm_send_cmd_pdu(mvm, WEP_KEY, 0, sizeof(wkc), &wkc);
160 data->error = ret != 0;
161
162 mvm->ptk_ivlen = key->iv_len;
163 mvm->ptk_icvlen = key->icv_len;
164 mvm->gtk_ivlen = key->iv_len;
165 mvm->gtk_icvlen = key->icv_len;
166 mutex_unlock(&mvm->mutex);
167
168 /* don't upload key again */
169 return;
170 }
171 default:
172 data->error = true;
173 return;
174 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
175 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
176 return;
177 case WLAN_CIPHER_SUITE_AES_CMAC:
178 /*
179 * Ignore CMAC keys -- the WoWLAN firmware doesn't support them
180 * but we also shouldn't abort suspend due to that. It does have
181 * support for the IGTK key renewal, but doesn't really use the
182 * IGTK for anything. This means we could spuriously wake up or
183 * be deauthenticated, but that was considered acceptable.
184 */
185 return;
186 case WLAN_CIPHER_SUITE_TKIP:
187 case WLAN_CIPHER_SUITE_CCMP:
188 case WLAN_CIPHER_SUITE_GCMP:
189 case WLAN_CIPHER_SUITE_GCMP_256:
190 break;
191 }
192
193 mutex_lock(&mvm->mutex);
194 /*
195 * The D3 firmware hardcodes the key offset 0 as the key it
196 * uses to transmit packets to the AP, i.e. the PTK.
197 */
198 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
199 mvm->ptk_ivlen = key->iv_len;
200 mvm->ptk_icvlen = key->icv_len;
201 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 0);
202 } else {
203 /*
204 * firmware only supports TSC/RSC for a single key,
205 * so if there are multiple keep overwriting them
206 * with new ones -- this relies on mac80211 doing
207 * list_add_tail().
208 */
209 mvm->gtk_ivlen = key->iv_len;
210 mvm->gtk_icvlen = key->icv_len;
211 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 1);
212 }
213 mutex_unlock(&mvm->mutex);
214 data->error = ret != 0;
215 }
216
217 struct wowlan_key_rsc_tsc_data {
218 struct iwl_wowlan_rsc_tsc_params_cmd_v4 *rsc_tsc;
219 bool have_rsc_tsc;
220 };
221
iwl_mvm_wowlan_get_rsc_tsc_data(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key,void * _data)222 static void iwl_mvm_wowlan_get_rsc_tsc_data(struct ieee80211_hw *hw,
223 struct ieee80211_vif *vif,
224 struct ieee80211_sta *sta,
225 struct ieee80211_key_conf *key,
226 void *_data)
227 {
228 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
229 struct wowlan_key_rsc_tsc_data *data = _data;
230 struct aes_sc *aes_sc;
231 struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
232 struct ieee80211_key_seq seq;
233 int i;
234
235 switch (key->cipher) {
236 default:
237 break;
238 case WLAN_CIPHER_SUITE_TKIP:
239 if (sta) {
240 u64 pn64;
241
242 tkip_sc =
243 data->rsc_tsc->params.all_tsc_rsc.tkip.unicast_rsc;
244 tkip_tx_sc =
245 &data->rsc_tsc->params.all_tsc_rsc.tkip.tsc;
246
247 pn64 = atomic64_read(&key->tx_pn);
248 tkip_tx_sc->iv16 = cpu_to_le16(TKIP_PN_TO_IV16(pn64));
249 tkip_tx_sc->iv32 = cpu_to_le32(TKIP_PN_TO_IV32(pn64));
250 } else {
251 tkip_sc =
252 data->rsc_tsc->params.all_tsc_rsc.tkip.multicast_rsc;
253 }
254
255 /*
256 * For non-QoS this relies on the fact that both the uCode and
257 * mac80211 use TID 0 (as they need to to avoid replay attacks)
258 * for checking the IV in the frames.
259 */
260 for (i = 0; i < IWL_NUM_RSC; i++) {
261 ieee80211_get_key_rx_seq(key, i, &seq);
262 tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
263 tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
264 }
265
266 data->have_rsc_tsc = true;
267 break;
268 case WLAN_CIPHER_SUITE_CCMP:
269 case WLAN_CIPHER_SUITE_GCMP:
270 case WLAN_CIPHER_SUITE_GCMP_256:
271 if (sta) {
272 struct aes_sc *aes_tx_sc;
273 u64 pn64;
274
275 aes_sc =
276 data->rsc_tsc->params.all_tsc_rsc.aes.unicast_rsc;
277 aes_tx_sc =
278 &data->rsc_tsc->params.all_tsc_rsc.aes.tsc;
279
280 pn64 = atomic64_read(&key->tx_pn);
281 aes_tx_sc->pn = cpu_to_le64(pn64);
282 } else {
283 aes_sc =
284 data->rsc_tsc->params.all_tsc_rsc.aes.multicast_rsc;
285 }
286
287 /*
288 * For non-QoS this relies on the fact that both the uCode and
289 * mac80211/our RX code use TID 0 for checking the PN.
290 */
291 if (sta && iwl_mvm_has_new_rx_api(mvm)) {
292 struct iwl_mvm_sta *mvmsta;
293 struct iwl_mvm_key_pn *ptk_pn;
294 const u8 *pn;
295
296 mvmsta = iwl_mvm_sta_from_mac80211(sta);
297 rcu_read_lock();
298 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]);
299 if (WARN_ON(!ptk_pn)) {
300 rcu_read_unlock();
301 break;
302 }
303
304 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
305 pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i,
306 mvm->trans->num_rx_queues);
307 aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
308 ((u64)pn[4] << 8) |
309 ((u64)pn[3] << 16) |
310 ((u64)pn[2] << 24) |
311 ((u64)pn[1] << 32) |
312 ((u64)pn[0] << 40));
313 }
314
315 rcu_read_unlock();
316 } else {
317 for (i = 0; i < IWL_NUM_RSC; i++) {
318 u8 *pn = seq.ccmp.pn;
319
320 ieee80211_get_key_rx_seq(key, i, &seq);
321 aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
322 ((u64)pn[4] << 8) |
323 ((u64)pn[3] << 16) |
324 ((u64)pn[2] << 24) |
325 ((u64)pn[1] << 32) |
326 ((u64)pn[0] << 40));
327 }
328 }
329 data->have_rsc_tsc = true;
330 break;
331 }
332 }
333
334 struct wowlan_key_rsc_v5_data {
335 struct iwl_wowlan_rsc_tsc_params_cmd *rsc;
336 bool have_rsc;
337 int gtks;
338 int gtk_ids[4];
339 };
340
iwl_mvm_wowlan_get_rsc_v5_data(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key,void * _data)341 static void iwl_mvm_wowlan_get_rsc_v5_data(struct ieee80211_hw *hw,
342 struct ieee80211_vif *vif,
343 struct ieee80211_sta *sta,
344 struct ieee80211_key_conf *key,
345 void *_data)
346 {
347 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
348 struct wowlan_key_rsc_v5_data *data = _data;
349 struct ieee80211_key_seq seq;
350 __le64 *rsc;
351 int i;
352
353 /* only for ciphers that can be PTK/GTK */
354 switch (key->cipher) {
355 default:
356 return;
357 case WLAN_CIPHER_SUITE_TKIP:
358 case WLAN_CIPHER_SUITE_CCMP:
359 case WLAN_CIPHER_SUITE_GCMP:
360 case WLAN_CIPHER_SUITE_GCMP_256:
361 break;
362 }
363
364 if (sta) {
365 rsc = data->rsc->ucast_rsc;
366 } else {
367 if (WARN_ON(data->gtks >= ARRAY_SIZE(data->gtk_ids)))
368 return;
369 data->gtk_ids[data->gtks] = key->keyidx;
370 rsc = data->rsc->mcast_rsc[data->gtks % 2];
371 if (WARN_ON(key->keyidx >=
372 ARRAY_SIZE(data->rsc->mcast_key_id_map)))
373 return;
374 data->rsc->mcast_key_id_map[key->keyidx] = data->gtks % 2;
375 if (data->gtks >= 2) {
376 int prev = data->gtks - 2;
377 int prev_idx = data->gtk_ids[prev];
378
379 data->rsc->mcast_key_id_map[prev_idx] =
380 IWL_MCAST_KEY_MAP_INVALID;
381 }
382 data->gtks++;
383 }
384
385 switch (key->cipher) {
386 default:
387 WARN_ON(1);
388 break;
389 case WLAN_CIPHER_SUITE_TKIP:
390
391 /*
392 * For non-QoS this relies on the fact that both the uCode and
393 * mac80211 use TID 0 (as they need to to avoid replay attacks)
394 * for checking the IV in the frames.
395 */
396 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
397 ieee80211_get_key_rx_seq(key, i, &seq);
398
399 rsc[i] = cpu_to_le64(((u64)seq.tkip.iv32 << 16) |
400 seq.tkip.iv16);
401 }
402
403 data->have_rsc = true;
404 break;
405 case WLAN_CIPHER_SUITE_CCMP:
406 case WLAN_CIPHER_SUITE_GCMP:
407 case WLAN_CIPHER_SUITE_GCMP_256:
408 /*
409 * For non-QoS this relies on the fact that both the uCode and
410 * mac80211/our RX code use TID 0 for checking the PN.
411 */
412 if (sta) {
413 struct iwl_mvm_sta *mvmsta;
414 struct iwl_mvm_key_pn *ptk_pn;
415 const u8 *pn;
416
417 mvmsta = iwl_mvm_sta_from_mac80211(sta);
418 rcu_read_lock();
419 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]);
420 if (WARN_ON(!ptk_pn)) {
421 rcu_read_unlock();
422 break;
423 }
424
425 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
426 pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i,
427 mvm->trans->num_rx_queues);
428 rsc[i] = cpu_to_le64((u64)pn[5] |
429 ((u64)pn[4] << 8) |
430 ((u64)pn[3] << 16) |
431 ((u64)pn[2] << 24) |
432 ((u64)pn[1] << 32) |
433 ((u64)pn[0] << 40));
434 }
435
436 rcu_read_unlock();
437 } else {
438 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
439 u8 *pn = seq.ccmp.pn;
440
441 ieee80211_get_key_rx_seq(key, i, &seq);
442 rsc[i] = cpu_to_le64((u64)pn[5] |
443 ((u64)pn[4] << 8) |
444 ((u64)pn[3] << 16) |
445 ((u64)pn[2] << 24) |
446 ((u64)pn[1] << 32) |
447 ((u64)pn[0] << 40));
448 }
449 }
450 data->have_rsc = true;
451 break;
452 }
453 }
454
iwl_mvm_wowlan_config_rsc_tsc(struct iwl_mvm * mvm,struct ieee80211_vif * vif)455 static int iwl_mvm_wowlan_config_rsc_tsc(struct iwl_mvm *mvm,
456 struct ieee80211_vif *vif)
457 {
458 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
459 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TSC_RSC_PARAM,
460 IWL_FW_CMD_VER_UNKNOWN);
461 int ret;
462
463 if (ver == 5) {
464 struct wowlan_key_rsc_v5_data data = {};
465 int i;
466
467 data.rsc = kmalloc(sizeof(*data.rsc), GFP_KERNEL);
468 if (!data.rsc)
469 return -ENOMEM;
470
471 memset(data.rsc, 0xff, sizeof(*data.rsc));
472
473 for (i = 0; i < ARRAY_SIZE(data.rsc->mcast_key_id_map); i++)
474 data.rsc->mcast_key_id_map[i] =
475 IWL_MCAST_KEY_MAP_INVALID;
476 data.rsc->sta_id = cpu_to_le32(mvmvif->deflink.ap_sta_id);
477
478 ieee80211_iter_keys(mvm->hw, vif,
479 iwl_mvm_wowlan_get_rsc_v5_data,
480 &data);
481
482 if (data.have_rsc)
483 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM,
484 CMD_ASYNC, sizeof(*data.rsc),
485 data.rsc);
486 else
487 ret = 0;
488 kfree(data.rsc);
489 } else if (ver == 4 || ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN) {
490 struct wowlan_key_rsc_tsc_data data = {};
491 int size;
492
493 data.rsc_tsc = kzalloc(sizeof(*data.rsc_tsc), GFP_KERNEL);
494 if (!data.rsc_tsc)
495 return -ENOMEM;
496
497 if (ver == 4) {
498 size = sizeof(*data.rsc_tsc);
499 data.rsc_tsc->sta_id =
500 cpu_to_le32(mvmvif->deflink.ap_sta_id);
501 } else {
502 /* ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN */
503 size = sizeof(data.rsc_tsc->params);
504 }
505
506 ieee80211_iter_keys(mvm->hw, vif,
507 iwl_mvm_wowlan_get_rsc_tsc_data,
508 &data);
509
510 if (data.have_rsc_tsc)
511 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM,
512 CMD_ASYNC, size,
513 data.rsc_tsc);
514 else
515 ret = 0;
516 kfree(data.rsc_tsc);
517 } else {
518 ret = 0;
519 WARN_ON_ONCE(1);
520 }
521
522 return ret;
523 }
524
525 struct wowlan_key_tkip_data {
526 struct iwl_wowlan_tkip_params_cmd tkip;
527 bool have_tkip_keys;
528 };
529
iwl_mvm_wowlan_get_tkip_data(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key,void * _data)530 static void iwl_mvm_wowlan_get_tkip_data(struct ieee80211_hw *hw,
531 struct ieee80211_vif *vif,
532 struct ieee80211_sta *sta,
533 struct ieee80211_key_conf *key,
534 void *_data)
535 {
536 struct wowlan_key_tkip_data *data = _data;
537 struct iwl_p1k_cache *rx_p1ks;
538 u8 *rx_mic_key;
539 struct ieee80211_key_seq seq;
540 u32 cur_rx_iv32 = 0;
541 u16 p1k[IWL_P1K_SIZE];
542 int i;
543
544 switch (key->cipher) {
545 default:
546 break;
547 case WLAN_CIPHER_SUITE_TKIP:
548 if (sta) {
549 u64 pn64;
550
551 rx_p1ks = data->tkip.rx_uni;
552
553 pn64 = atomic64_read(&key->tx_pn);
554
555 ieee80211_get_tkip_p1k_iv(key, TKIP_PN_TO_IV32(pn64),
556 p1k);
557 iwl_mvm_convert_p1k(p1k, data->tkip.tx.p1k);
558
559 memcpy(data->tkip.mic_keys.tx,
560 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
561 IWL_MIC_KEY_SIZE);
562
563 rx_mic_key = data->tkip.mic_keys.rx_unicast;
564 } else {
565 rx_p1ks = data->tkip.rx_multi;
566 rx_mic_key = data->tkip.mic_keys.rx_mcast;
567 }
568
569 for (i = 0; i < IWL_NUM_RSC; i++) {
570 ieee80211_get_key_rx_seq(key, i, &seq);
571 /* wrapping isn't allowed, AP must rekey */
572 if (seq.tkip.iv32 > cur_rx_iv32)
573 cur_rx_iv32 = seq.tkip.iv32;
574 }
575
576 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
577 cur_rx_iv32, p1k);
578 iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k);
579 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
580 cur_rx_iv32 + 1, p1k);
581 iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k);
582
583 memcpy(rx_mic_key,
584 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
585 IWL_MIC_KEY_SIZE);
586
587 data->have_tkip_keys = true;
588 break;
589 }
590 }
591
592 struct wowlan_key_gtk_type_iter {
593 struct iwl_wowlan_kek_kck_material_cmd_v4 *kek_kck_cmd;
594 };
595
iwl_mvm_wowlan_gtk_type_iter(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key,void * _data)596 static void iwl_mvm_wowlan_gtk_type_iter(struct ieee80211_hw *hw,
597 struct ieee80211_vif *vif,
598 struct ieee80211_sta *sta,
599 struct ieee80211_key_conf *key,
600 void *_data)
601 {
602 struct wowlan_key_gtk_type_iter *data = _data;
603
604 switch (key->cipher) {
605 default:
606 return;
607 case WLAN_CIPHER_SUITE_TKIP:
608 if (!sta)
609 data->kek_kck_cmd->gtk_cipher =
610 cpu_to_le32(STA_KEY_FLG_TKIP);
611 return;
612 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
613 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
614 data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_GCMP);
615 return;
616 case WLAN_CIPHER_SUITE_AES_CMAC:
617 data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_CCM);
618 return;
619 case WLAN_CIPHER_SUITE_CCMP:
620 if (!sta)
621 data->kek_kck_cmd->gtk_cipher =
622 cpu_to_le32(STA_KEY_FLG_CCM);
623 return;
624 case WLAN_CIPHER_SUITE_GCMP:
625 case WLAN_CIPHER_SUITE_GCMP_256:
626 if (!sta)
627 data->kek_kck_cmd->gtk_cipher =
628 cpu_to_le32(STA_KEY_FLG_GCMP);
629 return;
630 }
631 }
632
iwl_mvm_send_patterns_v1(struct iwl_mvm * mvm,struct cfg80211_wowlan * wowlan)633 static int iwl_mvm_send_patterns_v1(struct iwl_mvm *mvm,
634 struct cfg80211_wowlan *wowlan)
635 {
636 struct iwl_wowlan_patterns_cmd_v1 *pattern_cmd;
637 struct iwl_host_cmd cmd = {
638 .id = WOWLAN_PATTERNS,
639 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
640 };
641 int i, err;
642
643 if (!wowlan->n_patterns)
644 return 0;
645
646 cmd.len[0] = struct_size(pattern_cmd, patterns, wowlan->n_patterns);
647
648 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
649 if (!pattern_cmd)
650 return -ENOMEM;
651
652 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
653
654 for (i = 0; i < wowlan->n_patterns; i++) {
655 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
656
657 memcpy(&pattern_cmd->patterns[i].mask,
658 wowlan->patterns[i].mask, mask_len);
659 memcpy(&pattern_cmd->patterns[i].pattern,
660 wowlan->patterns[i].pattern,
661 wowlan->patterns[i].pattern_len);
662 pattern_cmd->patterns[i].mask_size = mask_len;
663 pattern_cmd->patterns[i].pattern_size =
664 wowlan->patterns[i].pattern_len;
665 }
666
667 cmd.data[0] = pattern_cmd;
668 err = iwl_mvm_send_cmd(mvm, &cmd);
669 kfree(pattern_cmd);
670 return err;
671 }
672
iwl_mvm_send_patterns(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct cfg80211_wowlan * wowlan)673 static int iwl_mvm_send_patterns(struct iwl_mvm *mvm,
674 struct ieee80211_vif *vif,
675 struct cfg80211_wowlan *wowlan)
676 {
677 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
678 struct iwl_wowlan_patterns_cmd *pattern_cmd;
679 struct iwl_host_cmd cmd = {
680 .id = WOWLAN_PATTERNS,
681 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
682 };
683 int i, err;
684 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id,
685 IWL_FW_CMD_VER_UNKNOWN);
686
687 if (!wowlan->n_patterns)
688 return 0;
689
690 cmd.len[0] = sizeof(*pattern_cmd) +
691 wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern_v2);
692
693 pattern_cmd = kzalloc(cmd.len[0], GFP_KERNEL);
694 if (!pattern_cmd)
695 return -ENOMEM;
696
697 pattern_cmd->n_patterns = wowlan->n_patterns;
698 if (ver >= 3)
699 pattern_cmd->sta_id = mvmvif->deflink.ap_sta_id;
700
701 for (i = 0; i < wowlan->n_patterns; i++) {
702 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
703
704 pattern_cmd->patterns[i].pattern_type =
705 WOWLAN_PATTERN_TYPE_BITMASK;
706
707 memcpy(&pattern_cmd->patterns[i].u.bitmask.mask,
708 wowlan->patterns[i].mask, mask_len);
709 memcpy(&pattern_cmd->patterns[i].u.bitmask.pattern,
710 wowlan->patterns[i].pattern,
711 wowlan->patterns[i].pattern_len);
712 pattern_cmd->patterns[i].u.bitmask.mask_size = mask_len;
713 pattern_cmd->patterns[i].u.bitmask.pattern_size =
714 wowlan->patterns[i].pattern_len;
715 }
716
717 cmd.data[0] = pattern_cmd;
718 err = iwl_mvm_send_cmd(mvm, &cmd);
719 kfree(pattern_cmd);
720 return err;
721 }
722
iwl_mvm_d3_reprogram(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * ap_sta)723 static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
724 struct ieee80211_sta *ap_sta)
725 {
726 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
727 struct ieee80211_chanctx_conf *ctx;
728 u8 chains_static, chains_dynamic;
729 struct cfg80211_chan_def chandef;
730 int ret, i;
731 struct iwl_binding_cmd_v1 binding_cmd = {};
732 struct iwl_time_quota_cmd quota_cmd = {};
733 struct iwl_time_quota_data *quota;
734 u32 status;
735
736 if (WARN_ON_ONCE(iwl_mvm_is_cdb_supported(mvm)))
737 return -EINVAL;
738
739 /* add back the PHY */
740 if (WARN_ON(!mvmvif->deflink.phy_ctxt))
741 return -EINVAL;
742
743 rcu_read_lock();
744 ctx = rcu_dereference(vif->bss_conf.chanctx_conf);
745 if (WARN_ON(!ctx)) {
746 rcu_read_unlock();
747 return -EINVAL;
748 }
749 chandef = ctx->def;
750 chains_static = ctx->rx_chains_static;
751 chains_dynamic = ctx->rx_chains_dynamic;
752 rcu_read_unlock();
753
754 ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->deflink.phy_ctxt, &chandef,
755 chains_static, chains_dynamic);
756 if (ret)
757 return ret;
758
759 /* add back the MAC */
760 mvmvif->uploaded = false;
761
762 if (WARN_ON(!vif->cfg.assoc))
763 return -EINVAL;
764
765 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
766 if (ret)
767 return ret;
768
769 /* add back binding - XXX refactor? */
770 binding_cmd.id_and_color =
771 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id,
772 mvmvif->deflink.phy_ctxt->color));
773 binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD);
774 binding_cmd.phy =
775 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id,
776 mvmvif->deflink.phy_ctxt->color));
777 binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
778 mvmvif->color));
779 for (i = 1; i < MAX_MACS_IN_BINDING; i++)
780 binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID);
781
782 status = 0;
783 ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD,
784 IWL_BINDING_CMD_SIZE_V1, &binding_cmd,
785 &status);
786 if (ret) {
787 IWL_ERR(mvm, "Failed to add binding: %d\n", ret);
788 return ret;
789 }
790
791 if (status) {
792 IWL_ERR(mvm, "Binding command failed: %u\n", status);
793 return -EIO;
794 }
795
796 ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false, 0);
797 if (ret)
798 return ret;
799 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->deflink.ap_sta_id],
800 ap_sta);
801
802 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
803 if (ret)
804 return ret;
805
806 /* and some quota */
807 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, 0);
808 quota->id_and_color =
809 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id,
810 mvmvif->deflink.phy_ctxt->color));
811 quota->quota = cpu_to_le32(IWL_MVM_MAX_QUOTA);
812 quota->max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA);
813
814 for (i = 1; i < MAX_BINDINGS; i++) {
815 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, i);
816 quota->id_and_color = cpu_to_le32(FW_CTXT_INVALID);
817 }
818
819 ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0,
820 iwl_mvm_quota_cmd_size(mvm), "a_cmd);
821 if (ret)
822 IWL_ERR(mvm, "Failed to send quota: %d\n", ret);
823
824 if (iwl_mvm_is_lar_supported(mvm) && iwl_mvm_init_fw_regd(mvm))
825 IWL_ERR(mvm, "Failed to initialize D3 LAR information\n");
826
827 return 0;
828 }
829
iwl_mvm_get_last_nonqos_seq(struct iwl_mvm * mvm,struct ieee80211_vif * vif)830 static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm,
831 struct ieee80211_vif *vif)
832 {
833 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
834 struct iwl_nonqos_seq_query_cmd query_cmd = {
835 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET),
836 .mac_id_n_color =
837 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
838 mvmvif->color)),
839 };
840 struct iwl_host_cmd cmd = {
841 .id = NON_QOS_TX_COUNTER_CMD,
842 .flags = CMD_WANT_SKB,
843 };
844 int err;
845 u32 size;
846
847 cmd.data[0] = &query_cmd;
848 cmd.len[0] = sizeof(query_cmd);
849
850 err = iwl_mvm_send_cmd(mvm, &cmd);
851 if (err)
852 return err;
853
854 size = iwl_rx_packet_payload_len(cmd.resp_pkt);
855 if (size < sizeof(__le16)) {
856 err = -EINVAL;
857 } else {
858 err = le16_to_cpup((__le16 *)cmd.resp_pkt->data);
859 /* firmware returns next, not last-used seqno */
860 err = (u16) (err - 0x10);
861 }
862
863 iwl_free_resp(&cmd);
864 return err;
865 }
866
iwl_mvm_set_last_nonqos_seq(struct iwl_mvm * mvm,struct ieee80211_vif * vif)867 void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
868 {
869 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
870 struct iwl_nonqos_seq_query_cmd query_cmd = {
871 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET),
872 .mac_id_n_color =
873 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
874 mvmvif->color)),
875 .value = cpu_to_le16(mvmvif->seqno),
876 };
877
878 /* return if called during restart, not resume from D3 */
879 if (!mvmvif->seqno_valid)
880 return;
881
882 mvmvif->seqno_valid = false;
883
884 if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0,
885 sizeof(query_cmd), &query_cmd))
886 IWL_ERR(mvm, "failed to set non-QoS seqno\n");
887 }
888
iwl_mvm_switch_to_d3(struct iwl_mvm * mvm)889 static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm)
890 {
891 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
892
893 iwl_mvm_stop_device(mvm);
894 /*
895 * Set the HW restart bit -- this is mostly true as we're
896 * going to load new firmware and reprogram that, though
897 * the reprogramming is going to be manual to avoid adding
898 * all the MACs that aren't support.
899 * We don't have to clear up everything though because the
900 * reprogramming is manual. When we resume, we'll actually
901 * go through a proper restart sequence again to switch
902 * back to the runtime firmware image.
903 */
904 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
905
906 /* the fw is reset, so all the keys are cleared */
907 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
908
909 mvm->ptk_ivlen = 0;
910 mvm->ptk_icvlen = 0;
911 mvm->ptk_ivlen = 0;
912 mvm->ptk_icvlen = 0;
913
914 return iwl_mvm_load_d3_fw(mvm);
915 }
916
917 static int
iwl_mvm_get_wowlan_config(struct iwl_mvm * mvm,struct cfg80211_wowlan * wowlan,struct iwl_wowlan_config_cmd * wowlan_config_cmd,struct ieee80211_vif * vif,struct iwl_mvm_vif * mvmvif,struct ieee80211_sta * ap_sta)918 iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm,
919 struct cfg80211_wowlan *wowlan,
920 struct iwl_wowlan_config_cmd *wowlan_config_cmd,
921 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
922 struct ieee80211_sta *ap_sta)
923 {
924 struct iwl_mvm_sta *mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
925
926 /* TODO: wowlan_config_cmd->wowlan_ba_teardown_tids */
927
928 wowlan_config_cmd->is_11n_connection =
929 ap_sta->deflink.ht_cap.ht_supported;
930 wowlan_config_cmd->flags = ENABLE_L3_FILTERING |
931 ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING;
932
933 if (iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_CONFIGURATION, 0) < 6) {
934 /* Query the last used seqno and set it */
935 int ret = iwl_mvm_get_last_nonqos_seq(mvm, vif);
936
937 if (ret < 0)
938 return ret;
939
940 wowlan_config_cmd->non_qos_seq = cpu_to_le16(ret);
941 }
942
943 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, wowlan_config_cmd);
944
945 if (wowlan->disconnect)
946 wowlan_config_cmd->wakeup_filter |=
947 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
948 IWL_WOWLAN_WAKEUP_LINK_CHANGE);
949 if (wowlan->magic_pkt)
950 wowlan_config_cmd->wakeup_filter |=
951 cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET);
952 if (wowlan->gtk_rekey_failure)
953 wowlan_config_cmd->wakeup_filter |=
954 cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
955 if (wowlan->eap_identity_req)
956 wowlan_config_cmd->wakeup_filter |=
957 cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ);
958 if (wowlan->four_way_handshake)
959 wowlan_config_cmd->wakeup_filter |=
960 cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
961 if (wowlan->n_patterns)
962 wowlan_config_cmd->wakeup_filter |=
963 cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH);
964
965 if (wowlan->rfkill_release)
966 wowlan_config_cmd->wakeup_filter |=
967 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
968
969 if (wowlan->tcp) {
970 /*
971 * Set the "link change" (really "link lost") flag as well
972 * since that implies losing the TCP connection.
973 */
974 wowlan_config_cmd->wakeup_filter |=
975 cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS |
976 IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE |
977 IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET |
978 IWL_WOWLAN_WAKEUP_LINK_CHANGE);
979 }
980
981 if (wowlan->any) {
982 wowlan_config_cmd->wakeup_filter |=
983 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
984 IWL_WOWLAN_WAKEUP_LINK_CHANGE |
985 IWL_WOWLAN_WAKEUP_RX_FRAME |
986 IWL_WOWLAN_WAKEUP_BCN_FILTERING);
987 }
988
989 return 0;
990 }
991
iwl_mvm_wowlan_config_key_params(struct iwl_mvm * mvm,struct ieee80211_vif * vif)992 static int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm,
993 struct ieee80211_vif *vif)
994 {
995 bool unified = fw_has_capa(&mvm->fw->ucode_capa,
996 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
997 struct wowlan_key_reprogram_data key_data = {};
998 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
999 int ret;
1000 u8 cmd_ver;
1001 size_t cmd_size;
1002
1003 if (!unified) {
1004 /*
1005 * if we have to configure keys, call ieee80211_iter_keys(),
1006 * as we need non-atomic context in order to take the
1007 * required locks.
1008 */
1009 /*
1010 * Note that currently we don't use CMD_ASYNC in the iterator.
1011 * In case of key_data.configure_keys, all the configured
1012 * commands are SYNC, and iwl_mvm_wowlan_program_keys() will
1013 * take care of locking/unlocking mvm->mutex.
1014 */
1015 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_program_keys,
1016 &key_data);
1017
1018 if (key_data.error)
1019 return -EIO;
1020 }
1021
1022 ret = iwl_mvm_wowlan_config_rsc_tsc(mvm, vif);
1023 if (ret)
1024 return ret;
1025
1026 if (!fw_has_api(&mvm->fw->ucode_capa,
1027 IWL_UCODE_TLV_API_TKIP_MIC_KEYS)) {
1028 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TKIP_PARAM,
1029 IWL_FW_CMD_VER_UNKNOWN);
1030 struct wowlan_key_tkip_data tkip_data = {};
1031 int size;
1032
1033 if (ver == 2) {
1034 size = sizeof(tkip_data.tkip);
1035 tkip_data.tkip.sta_id =
1036 cpu_to_le32(mvmvif->deflink.ap_sta_id);
1037 } else if (ver == 1 || ver == IWL_FW_CMD_VER_UNKNOWN) {
1038 size = sizeof(struct iwl_wowlan_tkip_params_cmd_ver_1);
1039 } else {
1040 WARN_ON_ONCE(1);
1041 return -EINVAL;
1042 }
1043
1044 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_get_tkip_data,
1045 &tkip_data);
1046
1047 if (tkip_data.have_tkip_keys) {
1048 /* send relevant data according to CMD version */
1049 ret = iwl_mvm_send_cmd_pdu(mvm,
1050 WOWLAN_TKIP_PARAM,
1051 CMD_ASYNC, size,
1052 &tkip_data.tkip);
1053 if (ret)
1054 return ret;
1055 }
1056 }
1057
1058 /* configure rekey data only if offloaded rekey is supported (d3) */
1059 if (mvmvif->rekey_data.valid) {
1060 struct iwl_wowlan_kek_kck_material_cmd_v4 kek_kck_cmd = {};
1061 struct iwl_wowlan_kek_kck_material_cmd_v4 *_kek_kck_cmd =
1062 &kek_kck_cmd;
1063 struct wowlan_key_gtk_type_iter gtk_type_data = {
1064 .kek_kck_cmd = _kek_kck_cmd,
1065 };
1066
1067 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,
1068 WOWLAN_KEK_KCK_MATERIAL,
1069 IWL_FW_CMD_VER_UNKNOWN);
1070 if (WARN_ON(cmd_ver != 2 && cmd_ver != 3 && cmd_ver != 4 &&
1071 cmd_ver != IWL_FW_CMD_VER_UNKNOWN))
1072 return -EINVAL;
1073
1074 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_gtk_type_iter,
1075 >k_type_data);
1076
1077 memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck,
1078 mvmvif->rekey_data.kck_len);
1079 kek_kck_cmd.kck_len = cpu_to_le16(mvmvif->rekey_data.kck_len);
1080 memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek,
1081 mvmvif->rekey_data.kek_len);
1082 kek_kck_cmd.kek_len = cpu_to_le16(mvmvif->rekey_data.kek_len);
1083 kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr;
1084 kek_kck_cmd.akm = cpu_to_le32(mvmvif->rekey_data.akm);
1085 kek_kck_cmd.sta_id = cpu_to_le32(mvmvif->deflink.ap_sta_id);
1086
1087 if (cmd_ver == 4) {
1088 cmd_size = sizeof(struct iwl_wowlan_kek_kck_material_cmd_v4);
1089 } else {
1090 if (cmd_ver == 3)
1091 cmd_size =
1092 sizeof(struct iwl_wowlan_kek_kck_material_cmd_v3);
1093 else
1094 cmd_size =
1095 sizeof(struct iwl_wowlan_kek_kck_material_cmd_v2);
1096 /* skip the sta_id at the beginning */
1097 _kek_kck_cmd = (void *)
1098 ((u8 *)_kek_kck_cmd + sizeof(kek_kck_cmd.sta_id));
1099 }
1100
1101 IWL_DEBUG_WOWLAN(mvm, "setting akm %d\n",
1102 mvmvif->rekey_data.akm);
1103
1104 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_KEK_KCK_MATERIAL,
1105 CMD_ASYNC, cmd_size, _kek_kck_cmd);
1106 if (ret)
1107 return ret;
1108 }
1109
1110 return 0;
1111 }
1112
1113 static int
iwl_mvm_wowlan_config(struct iwl_mvm * mvm,struct cfg80211_wowlan * wowlan,struct iwl_wowlan_config_cmd * wowlan_config_cmd,struct ieee80211_vif * vif,struct iwl_mvm_vif * mvmvif,struct ieee80211_sta * ap_sta)1114 iwl_mvm_wowlan_config(struct iwl_mvm *mvm,
1115 struct cfg80211_wowlan *wowlan,
1116 struct iwl_wowlan_config_cmd *wowlan_config_cmd,
1117 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
1118 struct ieee80211_sta *ap_sta)
1119 {
1120 int ret;
1121 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1122 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1123
1124 mvm->offload_tid = wowlan_config_cmd->offloading_tid;
1125
1126 if (!unified_image) {
1127 ret = iwl_mvm_switch_to_d3(mvm);
1128 if (ret)
1129 return ret;
1130
1131 ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta);
1132 if (ret)
1133 return ret;
1134 }
1135
1136 /*
1137 * This needs to be unlocked due to lock ordering
1138 * constraints. Since we're in the suspend path
1139 * that isn't really a problem though.
1140 */
1141 mutex_unlock(&mvm->mutex);
1142 ret = iwl_mvm_wowlan_config_key_params(mvm, vif);
1143 mutex_lock(&mvm->mutex);
1144 if (ret)
1145 return ret;
1146
1147 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0,
1148 sizeof(*wowlan_config_cmd),
1149 wowlan_config_cmd);
1150 if (ret)
1151 return ret;
1152
1153 if (fw_has_api(&mvm->fw->ucode_capa,
1154 IWL_UCODE_TLV_API_WOWLAN_TCP_SYN_WAKE))
1155 ret = iwl_mvm_send_patterns(mvm, vif, wowlan);
1156 else
1157 ret = iwl_mvm_send_patterns_v1(mvm, wowlan);
1158 if (ret)
1159 return ret;
1160
1161 return iwl_mvm_send_proto_offload(mvm, vif, false, true, 0);
1162 }
1163
1164 static int
iwl_mvm_netdetect_config(struct iwl_mvm * mvm,struct cfg80211_wowlan * wowlan,struct cfg80211_sched_scan_request * nd_config,struct ieee80211_vif * vif)1165 iwl_mvm_netdetect_config(struct iwl_mvm *mvm,
1166 struct cfg80211_wowlan *wowlan,
1167 struct cfg80211_sched_scan_request *nd_config,
1168 struct ieee80211_vif *vif)
1169 {
1170 int ret;
1171 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1172 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1173
1174 if (!unified_image) {
1175 ret = iwl_mvm_switch_to_d3(mvm);
1176 if (ret)
1177 return ret;
1178 } else {
1179 /* In theory, we wouldn't have to stop a running sched
1180 * scan in order to start another one (for
1181 * net-detect). But in practice this doesn't seem to
1182 * work properly, so stop any running sched_scan now.
1183 */
1184 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
1185 if (ret)
1186 return ret;
1187 }
1188
1189 ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies,
1190 IWL_MVM_SCAN_NETDETECT);
1191 if (ret)
1192 return ret;
1193
1194 if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels))
1195 return -EBUSY;
1196
1197 /* save the sched scan matchsets... */
1198 if (nd_config->n_match_sets) {
1199 mvm->nd_match_sets = kmemdup(nd_config->match_sets,
1200 sizeof(*nd_config->match_sets) *
1201 nd_config->n_match_sets,
1202 GFP_KERNEL);
1203 if (mvm->nd_match_sets)
1204 mvm->n_nd_match_sets = nd_config->n_match_sets;
1205 }
1206
1207 /* ...and the sched scan channels for later reporting */
1208 mvm->nd_channels = kmemdup(nd_config->channels,
1209 sizeof(*nd_config->channels) *
1210 nd_config->n_channels,
1211 GFP_KERNEL);
1212 if (mvm->nd_channels)
1213 mvm->n_nd_channels = nd_config->n_channels;
1214
1215 return 0;
1216 }
1217
iwl_mvm_free_nd(struct iwl_mvm * mvm)1218 static void iwl_mvm_free_nd(struct iwl_mvm *mvm)
1219 {
1220 kfree(mvm->nd_match_sets);
1221 mvm->nd_match_sets = NULL;
1222 mvm->n_nd_match_sets = 0;
1223 kfree(mvm->nd_channels);
1224 mvm->nd_channels = NULL;
1225 mvm->n_nd_channels = 0;
1226 }
1227
__iwl_mvm_suspend(struct ieee80211_hw * hw,struct cfg80211_wowlan * wowlan,bool test)1228 static int __iwl_mvm_suspend(struct ieee80211_hw *hw,
1229 struct cfg80211_wowlan *wowlan,
1230 bool test)
1231 {
1232 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1233 struct ieee80211_vif *vif = NULL;
1234 struct iwl_mvm_vif *mvmvif = NULL;
1235 struct ieee80211_sta *ap_sta = NULL;
1236 struct iwl_d3_manager_config d3_cfg_cmd_data = {
1237 /*
1238 * Program the minimum sleep time to 10 seconds, as many
1239 * platforms have issues processing a wakeup signal while
1240 * still being in the process of suspending.
1241 */
1242 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000),
1243 };
1244 struct iwl_host_cmd d3_cfg_cmd = {
1245 .id = D3_CONFIG_CMD,
1246 .flags = CMD_WANT_SKB | CMD_SEND_IN_D3,
1247 .data[0] = &d3_cfg_cmd_data,
1248 .len[0] = sizeof(d3_cfg_cmd_data),
1249 };
1250 int ret;
1251 int len __maybe_unused;
1252 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1253 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1254
1255 if (!wowlan) {
1256 /*
1257 * mac80211 shouldn't get here, but for D3 test
1258 * it doesn't warrant a warning
1259 */
1260 WARN_ON(!test);
1261 return -EINVAL;
1262 }
1263
1264 mutex_lock(&mvm->mutex);
1265
1266 set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
1267
1268 synchronize_net();
1269
1270 vif = iwl_mvm_get_bss_vif(mvm);
1271 if (IS_ERR_OR_NULL(vif)) {
1272 ret = 1;
1273 goto out_noreset;
1274 }
1275
1276 mvmvif = iwl_mvm_vif_from_mac80211(vif);
1277
1278 if (mvmvif->deflink.ap_sta_id == IWL_MVM_INVALID_STA) {
1279 /* if we're not associated, this must be netdetect */
1280 if (!wowlan->nd_config) {
1281 ret = 1;
1282 goto out_noreset;
1283 }
1284
1285 ret = iwl_mvm_netdetect_config(
1286 mvm, wowlan, wowlan->nd_config, vif);
1287 if (ret)
1288 goto out;
1289
1290 mvm->net_detect = true;
1291 } else {
1292 struct iwl_wowlan_config_cmd wowlan_config_cmd = {};
1293
1294 wowlan_config_cmd.sta_id = mvmvif->deflink.ap_sta_id;
1295
1296 ap_sta = rcu_dereference_protected(
1297 mvm->fw_id_to_mac_id[mvmvif->deflink.ap_sta_id],
1298 lockdep_is_held(&mvm->mutex));
1299 if (IS_ERR_OR_NULL(ap_sta)) {
1300 ret = -EINVAL;
1301 goto out_noreset;
1302 }
1303
1304 ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1305 vif, mvmvif, ap_sta);
1306 if (ret)
1307 goto out_noreset;
1308 ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1309 vif, mvmvif, ap_sta);
1310 if (ret)
1311 goto out;
1312
1313 mvm->net_detect = false;
1314 }
1315
1316 ret = iwl_mvm_power_update_device(mvm);
1317 if (ret)
1318 goto out;
1319
1320 ret = iwl_mvm_power_update_mac(mvm);
1321 if (ret)
1322 goto out;
1323
1324 #ifdef CONFIG_IWLWIFI_DEBUGFS
1325 if (mvm->d3_wake_sysassert)
1326 d3_cfg_cmd_data.wakeup_flags |=
1327 cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR);
1328 #endif
1329
1330 /*
1331 * Prior to 9000 device family the driver needs to stop the dbg
1332 * recording before entering D3. In later devices the FW stops the
1333 * recording automatically.
1334 */
1335 if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_9000)
1336 iwl_fw_dbg_stop_restart_recording(&mvm->fwrt, NULL, true);
1337
1338 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_D3;
1339
1340 /* must be last -- this switches firmware state */
1341 ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd);
1342 if (ret)
1343 goto out;
1344 #ifdef CONFIG_IWLWIFI_DEBUGFS
1345 len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt);
1346 if (len >= sizeof(u32)) {
1347 mvm->d3_test_pme_ptr =
1348 le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data);
1349 }
1350 #endif
1351 iwl_free_resp(&d3_cfg_cmd);
1352
1353 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1354
1355 ret = iwl_trans_d3_suspend(mvm->trans, test, !unified_image);
1356 out:
1357 if (ret < 0) {
1358 iwl_mvm_free_nd(mvm);
1359
1360 if (!unified_image) {
1361 if (mvm->fw_restart > 0) {
1362 mvm->fw_restart--;
1363 ieee80211_restart_hw(mvm->hw);
1364 }
1365 }
1366
1367 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
1368 }
1369 out_noreset:
1370 mutex_unlock(&mvm->mutex);
1371
1372 return ret;
1373 }
1374
iwl_mvm_suspend(struct ieee80211_hw * hw,struct cfg80211_wowlan * wowlan)1375 int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
1376 {
1377 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1378
1379 iwl_mvm_pause_tcm(mvm, true);
1380
1381 iwl_fw_runtime_suspend(&mvm->fwrt);
1382
1383 return __iwl_mvm_suspend(hw, wowlan, false);
1384 }
1385
1386 struct iwl_multicast_key_data {
1387 u8 key[WOWLAN_KEY_MAX_SIZE];
1388 u8 len;
1389 u8 flags;
1390 u8 id;
1391 u8 ipn[6];
1392 };
1393
1394 /* converted data from the different status responses */
1395 struct iwl_wowlan_status_data {
1396 u64 replay_ctr;
1397 u32 num_of_gtk_rekeys;
1398 u32 received_beacons;
1399 u32 wakeup_reasons;
1400 u32 wake_packet_length;
1401 u32 wake_packet_bufsize;
1402 u16 pattern_number;
1403 u16 non_qos_seq_ctr;
1404 u16 qos_seq_ctr[8];
1405 u8 tid_tear_down;
1406
1407 struct {
1408 /* including RX MIC key for TKIP */
1409 u8 key[WOWLAN_KEY_MAX_SIZE];
1410 u8 len;
1411 u8 flags;
1412 u8 id;
1413 } gtk[WOWLAN_GTK_KEYS_NUM];
1414
1415 struct {
1416 /*
1417 * We store both the TKIP and AES representations
1418 * coming from the firmware because we decode the
1419 * data from there before we iterate the keys and
1420 * know which one we need.
1421 */
1422 struct {
1423 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT];
1424 } tkip, aes;
1425
1426 /*
1427 * We use -1 for when we have valid data but don't know
1428 * the key ID from firmware, and thus it needs to be
1429 * installed with the last key (depending on rekeying).
1430 */
1431 s8 key_id;
1432 bool valid;
1433 } gtk_seq[2];
1434
1435 struct {
1436 /* Same as above */
1437 struct {
1438 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT];
1439 u64 tx_pn;
1440 } tkip, aes;
1441 } ptk;
1442
1443 struct iwl_multicast_key_data igtk;
1444
1445 u8 *wake_packet;
1446 };
1447
iwl_mvm_report_wakeup_reasons(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_wowlan_status_data * status)1448 static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm,
1449 struct ieee80211_vif *vif,
1450 struct iwl_wowlan_status_data *status)
1451 {
1452 struct sk_buff *pkt = NULL;
1453 struct cfg80211_wowlan_wakeup wakeup = {
1454 .pattern_idx = -1,
1455 };
1456 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
1457 u32 reasons = status->wakeup_reasons;
1458
1459 if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
1460 wakeup_report = NULL;
1461 goto report;
1462 }
1463
1464 pm_wakeup_event(mvm->dev, 0);
1465
1466 if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET)
1467 wakeup.magic_pkt = true;
1468
1469 if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN)
1470 wakeup.pattern_idx =
1471 status->pattern_number;
1472
1473 if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1474 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH))
1475 wakeup.disconnect = true;
1476
1477 if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)
1478 wakeup.gtk_rekey_failure = true;
1479
1480 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
1481 wakeup.rfkill_release = true;
1482
1483 if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST)
1484 wakeup.eap_identity_req = true;
1485
1486 if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE)
1487 wakeup.four_way_handshake = true;
1488
1489 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS)
1490 wakeup.tcp_connlost = true;
1491
1492 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE)
1493 wakeup.tcp_nomoretokens = true;
1494
1495 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET)
1496 wakeup.tcp_match = true;
1497
1498 if (status->wake_packet) {
1499 int pktsize = status->wake_packet_bufsize;
1500 int pktlen = status->wake_packet_length;
1501 const u8 *pktdata = status->wake_packet;
1502 const struct ieee80211_hdr *hdr = (const void *)pktdata;
1503 int truncated = pktlen - pktsize;
1504
1505 /* this would be a firmware bug */
1506 if (WARN_ON_ONCE(truncated < 0))
1507 truncated = 0;
1508
1509 if (ieee80211_is_data(hdr->frame_control)) {
1510 int hdrlen = ieee80211_hdrlen(hdr->frame_control);
1511 int ivlen = 0, icvlen = 4; /* also FCS */
1512
1513 pkt = alloc_skb(pktsize, GFP_KERNEL);
1514 if (!pkt)
1515 goto report;
1516
1517 skb_put_data(pkt, pktdata, hdrlen);
1518 pktdata += hdrlen;
1519 pktsize -= hdrlen;
1520
1521 if (ieee80211_has_protected(hdr->frame_control)) {
1522 /*
1523 * This is unlocked and using gtk_i(c)vlen,
1524 * but since everything is under RTNL still
1525 * that's not really a problem - changing
1526 * it would be difficult.
1527 */
1528 if (is_multicast_ether_addr(hdr->addr1)) {
1529 ivlen = mvm->gtk_ivlen;
1530 icvlen += mvm->gtk_icvlen;
1531 } else {
1532 ivlen = mvm->ptk_ivlen;
1533 icvlen += mvm->ptk_icvlen;
1534 }
1535 }
1536
1537 /* if truncated, FCS/ICV is (partially) gone */
1538 if (truncated >= icvlen) {
1539 icvlen = 0;
1540 truncated -= icvlen;
1541 } else {
1542 icvlen -= truncated;
1543 truncated = 0;
1544 }
1545
1546 pktsize -= ivlen + icvlen;
1547 pktdata += ivlen;
1548
1549 skb_put_data(pkt, pktdata, pktsize);
1550
1551 if (ieee80211_data_to_8023(pkt, vif->addr, vif->type))
1552 goto report;
1553 wakeup.packet = pkt->data;
1554 wakeup.packet_present_len = pkt->len;
1555 wakeup.packet_len = pkt->len - truncated;
1556 wakeup.packet_80211 = false;
1557 } else {
1558 int fcslen = 4;
1559
1560 if (truncated >= 4) {
1561 truncated -= 4;
1562 fcslen = 0;
1563 } else {
1564 fcslen -= truncated;
1565 truncated = 0;
1566 }
1567 pktsize -= fcslen;
1568 wakeup.packet = status->wake_packet;
1569 wakeup.packet_present_len = pktsize;
1570 wakeup.packet_len = pktlen - truncated;
1571 wakeup.packet_80211 = true;
1572 }
1573 }
1574
1575 report:
1576 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
1577 kfree_skb(pkt);
1578 }
1579
iwl_mvm_le64_to_aes_seq(__le64 le_pn,struct ieee80211_key_seq * seq)1580 static void iwl_mvm_le64_to_aes_seq(__le64 le_pn, struct ieee80211_key_seq *seq)
1581 {
1582 u64 pn = le64_to_cpu(le_pn);
1583
1584 seq->ccmp.pn[0] = pn >> 40;
1585 seq->ccmp.pn[1] = pn >> 32;
1586 seq->ccmp.pn[2] = pn >> 24;
1587 seq->ccmp.pn[3] = pn >> 16;
1588 seq->ccmp.pn[4] = pn >> 8;
1589 seq->ccmp.pn[5] = pn;
1590 }
1591
iwl_mvm_aes_sc_to_seq(struct aes_sc * sc,struct ieee80211_key_seq * seq)1592 static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc,
1593 struct ieee80211_key_seq *seq)
1594 {
1595 iwl_mvm_le64_to_aes_seq(sc->pn, seq);
1596 }
1597
iwl_mvm_le64_to_tkip_seq(__le64 le_pn,struct ieee80211_key_seq * seq)1598 static void iwl_mvm_le64_to_tkip_seq(__le64 le_pn, struct ieee80211_key_seq *seq)
1599 {
1600 u64 pn = le64_to_cpu(le_pn);
1601
1602 seq->tkip.iv16 = (u16)pn;
1603 seq->tkip.iv32 = (u32)(pn >> 16);
1604 }
1605
iwl_mvm_tkip_sc_to_seq(struct tkip_sc * sc,struct ieee80211_key_seq * seq)1606 static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc,
1607 struct ieee80211_key_seq *seq)
1608 {
1609 seq->tkip.iv32 = le32_to_cpu(sc->iv32);
1610 seq->tkip.iv16 = le16_to_cpu(sc->iv16);
1611 }
1612
iwl_mvm_set_key_rx_seq_tids(struct ieee80211_key_conf * key,struct ieee80211_key_seq * seq)1613 static void iwl_mvm_set_key_rx_seq_tids(struct ieee80211_key_conf *key,
1614 struct ieee80211_key_seq *seq)
1615 {
1616 int tid;
1617
1618 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++)
1619 ieee80211_set_key_rx_seq(key, tid, &seq[tid]);
1620 }
1621
iwl_mvm_set_aes_ptk_rx_seq(struct iwl_mvm * mvm,struct iwl_wowlan_status_data * status,struct ieee80211_sta * sta,struct ieee80211_key_conf * key)1622 static void iwl_mvm_set_aes_ptk_rx_seq(struct iwl_mvm *mvm,
1623 struct iwl_wowlan_status_data *status,
1624 struct ieee80211_sta *sta,
1625 struct ieee80211_key_conf *key)
1626 {
1627 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1628 struct iwl_mvm_key_pn *ptk_pn;
1629 int tid;
1630
1631 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.aes.seq);
1632
1633 if (!iwl_mvm_has_new_rx_api(mvm))
1634 return;
1635
1636
1637 rcu_read_lock();
1638 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]);
1639 if (WARN_ON(!ptk_pn)) {
1640 rcu_read_unlock();
1641 return;
1642 }
1643
1644 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1645 int i;
1646
1647 for (i = 1; i < mvm->trans->num_rx_queues; i++)
1648 memcpy(ptk_pn->q[i].pn[tid],
1649 status->ptk.aes.seq[tid].ccmp.pn,
1650 IEEE80211_CCMP_PN_LEN);
1651 }
1652 rcu_read_unlock();
1653 }
1654
iwl_mvm_convert_key_counters(struct iwl_wowlan_status_data * status,union iwl_all_tsc_rsc * sc)1655 static void iwl_mvm_convert_key_counters(struct iwl_wowlan_status_data *status,
1656 union iwl_all_tsc_rsc *sc)
1657 {
1658 int i;
1659
1660 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT);
1661 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC);
1662
1663 /* GTK RX counters */
1664 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1665 iwl_mvm_tkip_sc_to_seq(&sc->tkip.multicast_rsc[i],
1666 &status->gtk_seq[0].tkip.seq[i]);
1667 iwl_mvm_aes_sc_to_seq(&sc->aes.multicast_rsc[i],
1668 &status->gtk_seq[0].aes.seq[i]);
1669 }
1670 status->gtk_seq[0].valid = true;
1671 status->gtk_seq[0].key_id = -1;
1672
1673 /* PTK TX counter */
1674 status->ptk.tkip.tx_pn = (u64)le16_to_cpu(sc->tkip.tsc.iv16) |
1675 ((u64)le32_to_cpu(sc->tkip.tsc.iv32) << 16);
1676 status->ptk.aes.tx_pn = le64_to_cpu(sc->aes.tsc.pn);
1677
1678 /* PTK RX counters */
1679 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1680 iwl_mvm_tkip_sc_to_seq(&sc->tkip.unicast_rsc[i],
1681 &status->ptk.tkip.seq[i]);
1682 iwl_mvm_aes_sc_to_seq(&sc->aes.unicast_rsc[i],
1683 &status->ptk.aes.seq[i]);
1684 }
1685 }
1686
1687 static void
iwl_mvm_convert_key_counters_v5_gtk_seq(struct iwl_wowlan_status_data * status,struct iwl_wowlan_all_rsc_tsc_v5 * sc,unsigned int idx,unsigned int key_id)1688 iwl_mvm_convert_key_counters_v5_gtk_seq(struct iwl_wowlan_status_data *status,
1689 struct iwl_wowlan_all_rsc_tsc_v5 *sc,
1690 unsigned int idx, unsigned int key_id)
1691 {
1692 int tid;
1693
1694 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1695 iwl_mvm_le64_to_tkip_seq(sc->mcast_rsc[idx][tid],
1696 &status->gtk_seq[idx].tkip.seq[tid]);
1697 iwl_mvm_le64_to_aes_seq(sc->mcast_rsc[idx][tid],
1698 &status->gtk_seq[idx].aes.seq[tid]);
1699 }
1700
1701 status->gtk_seq[idx].valid = true;
1702 status->gtk_seq[idx].key_id = key_id;
1703 }
1704
1705 static void
iwl_mvm_convert_key_counters_v5(struct iwl_wowlan_status_data * status,struct iwl_wowlan_all_rsc_tsc_v5 * sc)1706 iwl_mvm_convert_key_counters_v5(struct iwl_wowlan_status_data *status,
1707 struct iwl_wowlan_all_rsc_tsc_v5 *sc)
1708 {
1709 int i, tid;
1710
1711 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT);
1712 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC);
1713 BUILD_BUG_ON(ARRAY_SIZE(sc->mcast_rsc) != ARRAY_SIZE(status->gtk_seq));
1714
1715 /* GTK RX counters */
1716 for (i = 0; i < ARRAY_SIZE(sc->mcast_key_id_map); i++) {
1717 u8 entry = sc->mcast_key_id_map[i];
1718
1719 if (entry < ARRAY_SIZE(sc->mcast_rsc))
1720 iwl_mvm_convert_key_counters_v5_gtk_seq(status, sc,
1721 entry, i);
1722 }
1723
1724 /* PTK TX counters not needed, assigned in device */
1725
1726 /* PTK RX counters */
1727 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1728 iwl_mvm_le64_to_tkip_seq(sc->ucast_rsc[tid],
1729 &status->ptk.tkip.seq[tid]);
1730 iwl_mvm_le64_to_aes_seq(sc->ucast_rsc[tid],
1731 &status->ptk.aes.seq[tid]);
1732 }
1733 }
1734
iwl_mvm_set_key_rx_seq_idx(struct ieee80211_key_conf * key,struct iwl_wowlan_status_data * status,int idx)1735 static void iwl_mvm_set_key_rx_seq_idx(struct ieee80211_key_conf *key,
1736 struct iwl_wowlan_status_data *status,
1737 int idx)
1738 {
1739 switch (key->cipher) {
1740 case WLAN_CIPHER_SUITE_CCMP:
1741 case WLAN_CIPHER_SUITE_GCMP:
1742 case WLAN_CIPHER_SUITE_GCMP_256:
1743 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].aes.seq);
1744 break;
1745 case WLAN_CIPHER_SUITE_TKIP:
1746 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].tkip.seq);
1747 break;
1748 default:
1749 WARN_ON(1);
1750 }
1751 }
1752
iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf * key,struct iwl_wowlan_status_data * status,bool installed)1753 static void iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf *key,
1754 struct iwl_wowlan_status_data *status,
1755 bool installed)
1756 {
1757 int i;
1758
1759 for (i = 0; i < ARRAY_SIZE(status->gtk_seq); i++) {
1760 if (!status->gtk_seq[i].valid)
1761 continue;
1762
1763 /* Handle the case where we know the key ID */
1764 if (status->gtk_seq[i].key_id == key->keyidx) {
1765 s8 new_key_id = -1;
1766
1767 if (status->num_of_gtk_rekeys)
1768 new_key_id = status->gtk[0].flags &
1769 IWL_WOWLAN_GTK_IDX_MASK;
1770
1771 /* Don't install a new key's value to an old key */
1772 if (new_key_id != key->keyidx)
1773 iwl_mvm_set_key_rx_seq_idx(key, status, i);
1774 continue;
1775 }
1776
1777 /* handle the case where we didn't, last key only */
1778 if (status->gtk_seq[i].key_id == -1 &&
1779 (!status->num_of_gtk_rekeys || installed))
1780 iwl_mvm_set_key_rx_seq_idx(key, status, i);
1781 }
1782 }
1783
1784 struct iwl_mvm_d3_gtk_iter_data {
1785 struct iwl_mvm *mvm;
1786 struct iwl_wowlan_status_data *status;
1787 u32 gtk_cipher, igtk_cipher;
1788 bool unhandled_cipher, igtk_support;
1789 int num_keys;
1790 };
1791
iwl_mvm_d3_find_last_keys(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key,void * _data)1792 static void iwl_mvm_d3_find_last_keys(struct ieee80211_hw *hw,
1793 struct ieee80211_vif *vif,
1794 struct ieee80211_sta *sta,
1795 struct ieee80211_key_conf *key,
1796 void *_data)
1797 {
1798 struct iwl_mvm_d3_gtk_iter_data *data = _data;
1799
1800 if (data->unhandled_cipher)
1801 return;
1802
1803 switch (key->cipher) {
1804 case WLAN_CIPHER_SUITE_WEP40:
1805 case WLAN_CIPHER_SUITE_WEP104:
1806 /* ignore WEP completely, nothing to do */
1807 return;
1808 case WLAN_CIPHER_SUITE_CCMP:
1809 case WLAN_CIPHER_SUITE_GCMP:
1810 case WLAN_CIPHER_SUITE_GCMP_256:
1811 case WLAN_CIPHER_SUITE_TKIP:
1812 /* we support these */
1813 data->gtk_cipher = key->cipher;
1814 break;
1815 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
1816 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
1817 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
1818 case WLAN_CIPHER_SUITE_AES_CMAC:
1819 /* we support these */
1820 if (data->igtk_support &&
1821 (key->keyidx == 4 || key->keyidx == 5)) {
1822 data->igtk_cipher = key->cipher;
1823 } else {
1824 data->unhandled_cipher = true;
1825 return;
1826 }
1827 break;
1828 default:
1829 /* everything else - disconnect from AP */
1830 data->unhandled_cipher = true;
1831 return;
1832 }
1833
1834 data->num_keys++;
1835 }
1836
1837 static void
iwl_mvm_d3_set_igtk_bigtk_ipn(const struct iwl_multicast_key_data * key,struct ieee80211_key_seq * seq,u32 cipher)1838 iwl_mvm_d3_set_igtk_bigtk_ipn(const struct iwl_multicast_key_data *key,
1839 struct ieee80211_key_seq *seq, u32 cipher)
1840 {
1841 switch (cipher) {
1842 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
1843 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
1844 BUILD_BUG_ON(sizeof(seq->aes_gmac.pn) != sizeof(key->ipn));
1845 memcpy(seq->aes_gmac.pn, key->ipn, sizeof(seq->aes_gmac.pn));
1846 break;
1847 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
1848 BUILD_BUG_ON(sizeof(seq->aes_cmac.pn) != sizeof(key->ipn));
1849 memcpy(seq->aes_cmac.pn, key->ipn, sizeof(seq->aes_cmac.pn));
1850 break;
1851 }
1852 }
1853
iwl_mvm_d3_update_keys(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key,void * _data)1854 static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw,
1855 struct ieee80211_vif *vif,
1856 struct ieee80211_sta *sta,
1857 struct ieee80211_key_conf *key,
1858 void *_data)
1859 {
1860 struct iwl_mvm_d3_gtk_iter_data *data = _data;
1861 struct iwl_wowlan_status_data *status = data->status;
1862 s8 keyidx;
1863
1864 if (data->unhandled_cipher)
1865 return;
1866
1867 switch (key->cipher) {
1868 case WLAN_CIPHER_SUITE_WEP40:
1869 case WLAN_CIPHER_SUITE_WEP104:
1870 /* ignore WEP completely, nothing to do */
1871 return;
1872 case WLAN_CIPHER_SUITE_CCMP:
1873 case WLAN_CIPHER_SUITE_GCMP:
1874 case WLAN_CIPHER_SUITE_GCMP_256:
1875 if (sta) {
1876 atomic64_set(&key->tx_pn, status->ptk.aes.tx_pn);
1877 iwl_mvm_set_aes_ptk_rx_seq(data->mvm, status, sta, key);
1878 return;
1879 }
1880 fallthrough;
1881 case WLAN_CIPHER_SUITE_TKIP:
1882 if (sta) {
1883 atomic64_set(&key->tx_pn, status->ptk.tkip.tx_pn);
1884 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.tkip.seq);
1885 return;
1886 }
1887 keyidx = key->keyidx;
1888 /* The current key is always sent by the FW, even if it wasn't
1889 * rekeyed during D3.
1890 * We remove an existing key if it has the same index as
1891 * a new key
1892 */
1893 if (status->num_of_gtk_rekeys &&
1894 ((status->gtk[0].len && keyidx == status->gtk[0].id) ||
1895 (status->gtk[1].len && keyidx == status->gtk[1].id))) {
1896 ieee80211_remove_key(key);
1897 } else {
1898 iwl_mvm_set_key_rx_seq(key, data->status, false);
1899 }
1900 break;
1901 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
1902 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
1903 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
1904 case WLAN_CIPHER_SUITE_AES_CMAC:
1905 if (key->keyidx == 4 || key->keyidx == 5) {
1906 /* remove rekeyed key */
1907 if (status->num_of_gtk_rekeys) {
1908 ieee80211_remove_key(key);
1909 } else {
1910 struct ieee80211_key_seq seq;
1911
1912 iwl_mvm_d3_set_igtk_bigtk_ipn(&status->igtk,
1913 &seq,
1914 key->cipher);
1915 ieee80211_set_key_rx_seq(key, 0, &seq);
1916 }
1917 }
1918 }
1919 }
1920
iwl_mvm_gtk_rekey(struct iwl_wowlan_status_data * status,struct ieee80211_vif * vif,struct iwl_mvm * mvm,u32 gtk_cipher)1921 static bool iwl_mvm_gtk_rekey(struct iwl_wowlan_status_data *status,
1922 struct ieee80211_vif *vif,
1923 struct iwl_mvm *mvm, u32 gtk_cipher)
1924 {
1925 int i;
1926 struct ieee80211_key_conf *key;
1927 struct {
1928 struct ieee80211_key_conf conf;
1929 u8 key[32];
1930 } conf = {
1931 .conf.cipher = gtk_cipher,
1932 };
1933
1934 BUILD_BUG_ON(WLAN_KEY_LEN_CCMP != WLAN_KEY_LEN_GCMP);
1935 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_CCMP);
1936 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_GCMP_256);
1937 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_TKIP);
1938 BUILD_BUG_ON(sizeof(conf.key) < sizeof(status->gtk[0].key));
1939
1940 switch (gtk_cipher) {
1941 case WLAN_CIPHER_SUITE_CCMP:
1942 case WLAN_CIPHER_SUITE_GCMP:
1943 conf.conf.keylen = WLAN_KEY_LEN_CCMP;
1944 break;
1945 case WLAN_CIPHER_SUITE_GCMP_256:
1946 conf.conf.keylen = WLAN_KEY_LEN_GCMP_256;
1947 break;
1948 case WLAN_CIPHER_SUITE_TKIP:
1949 conf.conf.keylen = WLAN_KEY_LEN_TKIP;
1950 break;
1951 default:
1952 WARN_ON(1);
1953 }
1954
1955 for (i = 0; i < ARRAY_SIZE(status->gtk); i++) {
1956 if (!status->gtk[i].len)
1957 continue;
1958
1959 conf.conf.keyidx = status->gtk[i].id;
1960 IWL_DEBUG_WOWLAN(mvm,
1961 "Received from FW GTK cipher %d, key index %d\n",
1962 conf.conf.cipher, conf.conf.keyidx);
1963 memcpy(conf.conf.key, status->gtk[i].key,
1964 sizeof(status->gtk[i].key));
1965
1966 key = ieee80211_gtk_rekey_add(vif, &conf.conf);
1967 if (IS_ERR(key))
1968 return false;
1969 iwl_mvm_set_key_rx_seq_idx(key, status, i);
1970 }
1971
1972 return true;
1973 }
1974
1975 static bool
iwl_mvm_d3_igtk_bigtk_rekey_add(struct iwl_wowlan_status_data * status,struct ieee80211_vif * vif,u32 cipher,struct iwl_multicast_key_data * key_data)1976 iwl_mvm_d3_igtk_bigtk_rekey_add(struct iwl_wowlan_status_data *status,
1977 struct ieee80211_vif *vif, u32 cipher,
1978 struct iwl_multicast_key_data *key_data)
1979 {
1980 struct ieee80211_key_conf *key_config;
1981 struct {
1982 struct ieee80211_key_conf conf;
1983 u8 key[WOWLAN_KEY_MAX_SIZE];
1984 } conf = {
1985 .conf.cipher = cipher,
1986 .conf.keyidx = key_data->id,
1987 };
1988 struct ieee80211_key_seq seq;
1989
1990 if (!key_data->len)
1991 return true;
1992
1993 iwl_mvm_d3_set_igtk_bigtk_ipn(key_data, &seq, conf.conf.cipher);
1994
1995 switch (cipher) {
1996 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
1997 conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_128;
1998 break;
1999 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
2000 conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_256;
2001 break;
2002 case WLAN_CIPHER_SUITE_AES_CMAC:
2003 conf.conf.keylen = WLAN_KEY_LEN_AES_CMAC;
2004 break;
2005 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
2006 conf.conf.keylen = WLAN_KEY_LEN_BIP_CMAC_256;
2007 break;
2008 default:
2009 WARN_ON(1);
2010 }
2011 BUILD_BUG_ON(sizeof(conf.key) < sizeof(key_data->key));
2012 memcpy(conf.conf.key, key_data->key, conf.conf.keylen);
2013
2014 key_config = ieee80211_gtk_rekey_add(vif, &conf.conf);
2015 if (IS_ERR(key_config))
2016 return false;
2017 ieee80211_set_key_rx_seq(key_config, 0, &seq);
2018 return true;
2019 }
2020
iwl_mvm_lookup_wowlan_status_ver(struct iwl_mvm * mvm)2021 static int iwl_mvm_lookup_wowlan_status_ver(struct iwl_mvm *mvm)
2022 {
2023 u8 notif_ver;
2024
2025 if (!fw_has_api(&mvm->fw->ucode_capa,
2026 IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL))
2027 return 6;
2028
2029 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */
2030 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP,
2031 WOWLAN_GET_STATUSES, 0);
2032 if (!notif_ver)
2033 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
2034 WOWLAN_GET_STATUSES, 7);
2035
2036 return notif_ver;
2037 }
2038
iwl_mvm_setup_connection_keep(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_wowlan_status_data * status)2039 static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm,
2040 struct ieee80211_vif *vif,
2041 struct iwl_wowlan_status_data *status)
2042 {
2043 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2044 struct iwl_mvm_d3_gtk_iter_data gtkdata = {
2045 .mvm = mvm,
2046 .status = status,
2047 };
2048 u32 disconnection_reasons =
2049 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
2050 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH;
2051
2052 if (!status || !vif->bss_conf.bssid)
2053 return false;
2054
2055 if (status->wakeup_reasons & disconnection_reasons)
2056 return false;
2057
2058 if (iwl_mvm_lookup_wowlan_status_ver(mvm) > 6 ||
2059 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
2060 WOWLAN_INFO_NOTIFICATION,
2061 0))
2062 gtkdata.igtk_support = true;
2063
2064 /* find last GTK that we used initially, if any */
2065 ieee80211_iter_keys(mvm->hw, vif,
2066 iwl_mvm_d3_find_last_keys, >kdata);
2067 /* not trying to keep connections with MFP/unhandled ciphers */
2068 if (gtkdata.unhandled_cipher)
2069 return false;
2070 if (!gtkdata.num_keys)
2071 goto out;
2072
2073 /*
2074 * invalidate all other GTKs that might still exist and update
2075 * the one that we used
2076 */
2077 ieee80211_iter_keys(mvm->hw, vif,
2078 iwl_mvm_d3_update_keys, >kdata);
2079
2080 if (status->num_of_gtk_rekeys) {
2081 __be64 replay_ctr = cpu_to_be64(status->replay_ctr);
2082
2083 IWL_DEBUG_WOWLAN(mvm, "num of GTK rekeying %d\n",
2084 status->num_of_gtk_rekeys);
2085
2086 if (!iwl_mvm_gtk_rekey(status, vif, mvm, gtkdata.gtk_cipher))
2087 return false;
2088
2089 if (!iwl_mvm_d3_igtk_bigtk_rekey_add(status, vif,
2090 gtkdata.igtk_cipher,
2091 &status->igtk))
2092 return false;
2093
2094 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid,
2095 (void *)&replay_ctr, GFP_KERNEL);
2096 }
2097
2098 out:
2099 if (iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP,
2100 WOWLAN_GET_STATUSES, 0) < 10) {
2101 mvmvif->seqno_valid = true;
2102 /* +0x10 because the set API expects next-to-use, not last-used */
2103 mvmvif->seqno = status->non_qos_seq_ctr + 0x10;
2104 }
2105
2106 return true;
2107 }
2108
iwl_mvm_convert_gtk_v2(struct iwl_wowlan_status_data * status,struct iwl_wowlan_gtk_status_v2 * data)2109 static void iwl_mvm_convert_gtk_v2(struct iwl_wowlan_status_data *status,
2110 struct iwl_wowlan_gtk_status_v2 *data)
2111 {
2112 BUILD_BUG_ON(sizeof(status->gtk[0].key) < sizeof(data->key));
2113 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY +
2114 sizeof(data->tkip_mic_key) >
2115 sizeof(status->gtk[0].key));
2116
2117 status->gtk[0].len = data->key_len;
2118 status->gtk[0].flags = data->key_flags;
2119
2120 memcpy(status->gtk[0].key, data->key, sizeof(data->key));
2121
2122 /* if it's as long as the TKIP encryption key, copy MIC key */
2123 if (status->gtk[0].len == NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY)
2124 memcpy(status->gtk[0].key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
2125 data->tkip_mic_key, sizeof(data->tkip_mic_key));
2126 }
2127
iwl_mvm_convert_gtk_v3(struct iwl_wowlan_status_data * status,struct iwl_wowlan_gtk_status_v3 * data)2128 static void iwl_mvm_convert_gtk_v3(struct iwl_wowlan_status_data *status,
2129 struct iwl_wowlan_gtk_status_v3 *data)
2130 {
2131 int data_idx, status_idx = 0;
2132
2133 BUILD_BUG_ON(sizeof(status->gtk[0].key) < sizeof(data[0].key));
2134 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY +
2135 sizeof(data[0].tkip_mic_key) >
2136 sizeof(status->gtk[0].key));
2137 BUILD_BUG_ON(ARRAY_SIZE(status->gtk) < WOWLAN_GTK_KEYS_NUM);
2138 for (data_idx = 0; data_idx < ARRAY_SIZE(status->gtk); data_idx++) {
2139 if (!(data[data_idx].key_len))
2140 continue;
2141 status->gtk[status_idx].len = data[data_idx].key_len;
2142 status->gtk[status_idx].flags = data[data_idx].key_flags;
2143 status->gtk[status_idx].id = status->gtk[status_idx].flags &
2144 IWL_WOWLAN_GTK_IDX_MASK;
2145
2146 memcpy(status->gtk[status_idx].key, data[data_idx].key,
2147 sizeof(data[data_idx].key));
2148
2149 /* if it's as long as the TKIP encryption key, copy MIC key */
2150 if (status->gtk[status_idx].len ==
2151 NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY)
2152 memcpy(status->gtk[status_idx].key +
2153 NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
2154 data[data_idx].tkip_mic_key,
2155 sizeof(data[data_idx].tkip_mic_key));
2156 status_idx++;
2157 }
2158 }
2159
iwl_mvm_convert_igtk(struct iwl_wowlan_status_data * status,struct iwl_wowlan_igtk_status * data)2160 static void iwl_mvm_convert_igtk(struct iwl_wowlan_status_data *status,
2161 struct iwl_wowlan_igtk_status *data)
2162 {
2163 BUILD_BUG_ON(sizeof(status->igtk.key) < sizeof(data->key));
2164
2165 if (!data->key_len)
2166 return;
2167
2168 status->igtk.len = data->key_len;
2169 status->igtk.flags = data->key_flags;
2170 status->igtk.id = u32_get_bits(data->key_flags,
2171 IWL_WOWLAN_IGTK_BIGTK_IDX_MASK)
2172 + WOWLAN_IGTK_MIN_INDEX;
2173
2174 memcpy(status->igtk.key, data->key, sizeof(data->key));
2175 memcpy(status->igtk.ipn, data->ipn, sizeof(data->ipn));
2176 }
2177
iwl_mvm_parse_wowlan_info_notif(struct iwl_mvm * mvm,struct iwl_wowlan_info_notif * data,struct iwl_wowlan_status_data * status,u32 len)2178 static void iwl_mvm_parse_wowlan_info_notif(struct iwl_mvm *mvm,
2179 struct iwl_wowlan_info_notif *data,
2180 struct iwl_wowlan_status_data *status,
2181 u32 len)
2182 {
2183 u32 i;
2184
2185 if (!data) {
2186 IWL_ERR(mvm, "iwl_wowlan_info_notif data is NULL\n");
2187 status = NULL;
2188 return;
2189 }
2190
2191 if (len < sizeof(*data)) {
2192 IWL_ERR(mvm, "Invalid WoWLAN info notification!\n");
2193 status = NULL;
2194 return;
2195 }
2196
2197 iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc);
2198 iwl_mvm_convert_gtk_v3(status, data->gtk);
2199 iwl_mvm_convert_igtk(status, &data->igtk[0]);
2200
2201 status->replay_ctr = le64_to_cpu(data->replay_ctr);
2202 status->pattern_number = le16_to_cpu(data->pattern_number);
2203 for (i = 0; i < IWL_MAX_TID_COUNT; i++)
2204 status->qos_seq_ctr[i] =
2205 le16_to_cpu(data->qos_seq_ctr[i]);
2206 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons);
2207 status->num_of_gtk_rekeys =
2208 le32_to_cpu(data->num_of_gtk_rekeys);
2209 status->received_beacons = le32_to_cpu(data->received_beacons);
2210 status->tid_tear_down = data->tid_tear_down;
2211 }
2212
2213 /* Occasionally, templates would be nice. This is one of those times ... */
2214 #define iwl_mvm_parse_wowlan_status_common(_ver) \
2215 static struct iwl_wowlan_status_data * \
2216 iwl_mvm_parse_wowlan_status_common_ ## _ver(struct iwl_mvm *mvm, \
2217 struct iwl_wowlan_status_ ##_ver *data,\
2218 int len) \
2219 { \
2220 struct iwl_wowlan_status_data *status; \
2221 int data_size, i; \
2222 \
2223 if (len < sizeof(*data)) { \
2224 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \
2225 return NULL; \
2226 } \
2227 \
2228 data_size = ALIGN(le32_to_cpu(data->wake_packet_bufsize), 4); \
2229 if (len != sizeof(*data) + data_size) { \
2230 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \
2231 return NULL; \
2232 } \
2233 \
2234 status = kzalloc(sizeof(*status), GFP_KERNEL); \
2235 if (!status) \
2236 return NULL; \
2237 \
2238 /* copy all the common fields */ \
2239 status->replay_ctr = le64_to_cpu(data->replay_ctr); \
2240 status->pattern_number = le16_to_cpu(data->pattern_number); \
2241 status->non_qos_seq_ctr = le16_to_cpu(data->non_qos_seq_ctr); \
2242 for (i = 0; i < 8; i++) \
2243 status->qos_seq_ctr[i] = \
2244 le16_to_cpu(data->qos_seq_ctr[i]); \
2245 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); \
2246 status->num_of_gtk_rekeys = \
2247 le32_to_cpu(data->num_of_gtk_rekeys); \
2248 status->received_beacons = le32_to_cpu(data->received_beacons); \
2249 status->wake_packet_length = \
2250 le32_to_cpu(data->wake_packet_length); \
2251 status->wake_packet_bufsize = \
2252 le32_to_cpu(data->wake_packet_bufsize); \
2253 if (status->wake_packet_bufsize) { \
2254 status->wake_packet = \
2255 kmemdup(data->wake_packet, \
2256 status->wake_packet_bufsize, \
2257 GFP_KERNEL); \
2258 if (!status->wake_packet) { \
2259 kfree(status); \
2260 return NULL; \
2261 } \
2262 } else { \
2263 status->wake_packet = NULL; \
2264 } \
2265 \
2266 return status; \
2267 }
2268
2269 iwl_mvm_parse_wowlan_status_common(v6)
iwl_mvm_parse_wowlan_status_common(v7)2270 iwl_mvm_parse_wowlan_status_common(v7)
2271 iwl_mvm_parse_wowlan_status_common(v9)
2272 iwl_mvm_parse_wowlan_status_common(v12)
2273
2274 static struct iwl_wowlan_status_data *
2275 iwl_mvm_send_wowlan_get_status(struct iwl_mvm *mvm, u8 sta_id)
2276 {
2277 struct iwl_wowlan_status_data *status;
2278 struct iwl_wowlan_get_status_cmd get_status_cmd = {
2279 .sta_id = cpu_to_le32(sta_id),
2280 };
2281 struct iwl_host_cmd cmd = {
2282 .id = WOWLAN_GET_STATUSES,
2283 .flags = CMD_WANT_SKB,
2284 .data = { &get_status_cmd, },
2285 .len = { sizeof(get_status_cmd), },
2286 };
2287 int ret, len;
2288 u8 notif_ver;
2289 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id,
2290 IWL_FW_CMD_VER_UNKNOWN);
2291
2292 if (cmd_ver == IWL_FW_CMD_VER_UNKNOWN)
2293 cmd.len[0] = 0;
2294
2295 lockdep_assert_held(&mvm->mutex);
2296
2297 ret = iwl_mvm_send_cmd(mvm, &cmd);
2298 if (ret) {
2299 IWL_ERR(mvm, "failed to query wakeup status (%d)\n", ret);
2300 return ERR_PTR(ret);
2301 }
2302
2303 len = iwl_rx_packet_payload_len(cmd.resp_pkt);
2304
2305 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */
2306 notif_ver = iwl_mvm_lookup_wowlan_status_ver(mvm);
2307
2308 if (notif_ver < 7) {
2309 struct iwl_wowlan_status_v6 *v6 = (void *)cmd.resp_pkt->data;
2310
2311 status = iwl_mvm_parse_wowlan_status_common_v6(mvm, v6, len);
2312 if (!status)
2313 goto out_free_resp;
2314
2315 BUILD_BUG_ON(sizeof(v6->gtk.decrypt_key) >
2316 sizeof(status->gtk[0].key));
2317 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY +
2318 sizeof(v6->gtk.tkip_mic_key) >
2319 sizeof(status->gtk[0].key));
2320
2321 /* copy GTK info to the right place */
2322 memcpy(status->gtk[0].key, v6->gtk.decrypt_key,
2323 sizeof(v6->gtk.decrypt_key));
2324 memcpy(status->gtk[0].key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
2325 v6->gtk.tkip_mic_key,
2326 sizeof(v6->gtk.tkip_mic_key));
2327
2328 iwl_mvm_convert_key_counters(status, &v6->gtk.rsc.all_tsc_rsc);
2329
2330 /* hardcode the key length to 16 since v6 only supports 16 */
2331 status->gtk[0].len = 16;
2332
2333 /*
2334 * The key index only uses 2 bits (values 0 to 3) and
2335 * we always set bit 7 which means this is the
2336 * currently used key.
2337 */
2338 status->gtk[0].flags = v6->gtk.key_index | BIT(7);
2339 } else if (notif_ver == 7) {
2340 struct iwl_wowlan_status_v7 *v7 = (void *)cmd.resp_pkt->data;
2341
2342 status = iwl_mvm_parse_wowlan_status_common_v7(mvm, v7, len);
2343 if (!status)
2344 goto out_free_resp;
2345
2346 iwl_mvm_convert_key_counters(status, &v7->gtk[0].rsc.all_tsc_rsc);
2347 iwl_mvm_convert_gtk_v2(status, &v7->gtk[0]);
2348 iwl_mvm_convert_igtk(status, &v7->igtk[0]);
2349 } else if (notif_ver == 9 || notif_ver == 10 || notif_ver == 11) {
2350 struct iwl_wowlan_status_v9 *v9 = (void *)cmd.resp_pkt->data;
2351
2352 /* these three command versions have same layout and size, the
2353 * difference is only in a few not used (reserved) fields.
2354 */
2355 status = iwl_mvm_parse_wowlan_status_common_v9(mvm, v9, len);
2356 if (!status)
2357 goto out_free_resp;
2358
2359 iwl_mvm_convert_key_counters(status, &v9->gtk[0].rsc.all_tsc_rsc);
2360 iwl_mvm_convert_gtk_v2(status, &v9->gtk[0]);
2361 iwl_mvm_convert_igtk(status, &v9->igtk[0]);
2362
2363 status->tid_tear_down = v9->tid_tear_down;
2364 } else if (notif_ver == 12) {
2365 struct iwl_wowlan_status_v12 *v12 = (void *)cmd.resp_pkt->data;
2366
2367 status = iwl_mvm_parse_wowlan_status_common_v12(mvm, v12, len);
2368 if (!status)
2369 goto out_free_resp;
2370
2371 iwl_mvm_convert_key_counters_v5(status, &v12->gtk[0].sc);
2372 iwl_mvm_convert_gtk_v3(status, v12->gtk);
2373 iwl_mvm_convert_igtk(status, &v12->igtk[0]);
2374
2375 status->tid_tear_down = v12->tid_tear_down;
2376 } else {
2377 IWL_ERR(mvm,
2378 "Firmware advertises unknown WoWLAN status response %d!\n",
2379 notif_ver);
2380 status = NULL;
2381 }
2382
2383 out_free_resp:
2384 iwl_free_resp(&cmd);
2385 return status;
2386 }
2387
2388 /* releases the MVM mutex */
iwl_mvm_query_wakeup_reasons(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_wowlan_status_data * status)2389 static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm,
2390 struct ieee80211_vif *vif,
2391 struct iwl_wowlan_status_data *status)
2392 {
2393 int i;
2394 bool keep;
2395 struct iwl_mvm_sta *mvm_ap_sta;
2396
2397 if (!status)
2398 goto out_unlock;
2399
2400 IWL_DEBUG_WOWLAN(mvm, "wakeup reason 0x%x\n",
2401 status->wakeup_reasons);
2402
2403 /* still at hard-coded place 0 for D3 image */
2404 mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, 0);
2405 if (!mvm_ap_sta)
2406 goto out_unlock;
2407
2408 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
2409 u16 seq = status->qos_seq_ctr[i];
2410 /* firmware stores last-used value, we store next value */
2411 seq += 0x10;
2412 mvm_ap_sta->tid_data[i].seq_number = seq;
2413 }
2414
2415 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000) {
2416 i = mvm->offload_tid;
2417 iwl_trans_set_q_ptrs(mvm->trans,
2418 mvm_ap_sta->tid_data[i].txq_id,
2419 mvm_ap_sta->tid_data[i].seq_number >> 4);
2420 }
2421
2422 /* now we have all the data we need, unlock to avoid mac80211 issues */
2423 mutex_unlock(&mvm->mutex);
2424
2425 iwl_mvm_report_wakeup_reasons(mvm, vif, status);
2426
2427 keep = iwl_mvm_setup_connection_keep(mvm, vif, status);
2428
2429 return keep;
2430
2431 out_unlock:
2432 mutex_unlock(&mvm->mutex);
2433 return false;
2434 }
2435
2436 #define ND_QUERY_BUF_LEN (sizeof(struct iwl_scan_offload_profile_match) * \
2437 IWL_SCAN_MAX_PROFILES)
2438
2439 struct iwl_mvm_nd_results {
2440 u32 matched_profiles;
2441 u8 matches[ND_QUERY_BUF_LEN];
2442 };
2443
2444 static int
iwl_mvm_netdetect_query_results(struct iwl_mvm * mvm,struct iwl_mvm_nd_results * results)2445 iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm,
2446 struct iwl_mvm_nd_results *results)
2447 {
2448 struct iwl_scan_offload_match_info *query;
2449 struct iwl_host_cmd cmd = {
2450 .id = SCAN_OFFLOAD_PROFILES_QUERY_CMD,
2451 .flags = CMD_WANT_SKB,
2452 };
2453 int ret, len;
2454 size_t query_len, matches_len;
2455 int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw);
2456
2457 ret = iwl_mvm_send_cmd(mvm, &cmd);
2458 if (ret) {
2459 IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret);
2460 return ret;
2461 }
2462
2463 if (fw_has_api(&mvm->fw->ucode_capa,
2464 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2465 query_len = sizeof(struct iwl_scan_offload_match_info);
2466 matches_len = sizeof(struct iwl_scan_offload_profile_match) *
2467 max_profiles;
2468 } else {
2469 query_len = sizeof(struct iwl_scan_offload_profiles_query_v1);
2470 matches_len = sizeof(struct iwl_scan_offload_profile_match_v1) *
2471 max_profiles;
2472 }
2473
2474 len = iwl_rx_packet_payload_len(cmd.resp_pkt);
2475 if (len < query_len) {
2476 IWL_ERR(mvm, "Invalid scan offload profiles query response!\n");
2477 ret = -EIO;
2478 goto out_free_resp;
2479 }
2480
2481 query = (void *)cmd.resp_pkt->data;
2482
2483 results->matched_profiles = le32_to_cpu(query->matched_profiles);
2484 memcpy(results->matches, query->matches, matches_len);
2485
2486 #ifdef CONFIG_IWLWIFI_DEBUGFS
2487 mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done);
2488 #endif
2489
2490 out_free_resp:
2491 iwl_free_resp(&cmd);
2492 return ret;
2493 }
2494
iwl_mvm_query_num_match_chans(struct iwl_mvm * mvm,struct iwl_mvm_nd_results * results,int idx)2495 static int iwl_mvm_query_num_match_chans(struct iwl_mvm *mvm,
2496 struct iwl_mvm_nd_results *results,
2497 int idx)
2498 {
2499 int n_chans = 0, i;
2500
2501 if (fw_has_api(&mvm->fw->ucode_capa,
2502 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2503 struct iwl_scan_offload_profile_match *matches =
2504 (void *)results->matches;
2505
2506 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; i++)
2507 n_chans += hweight8(matches[idx].matching_channels[i]);
2508 } else {
2509 struct iwl_scan_offload_profile_match_v1 *matches =
2510 (void *)results->matches;
2511
2512 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1; i++)
2513 n_chans += hweight8(matches[idx].matching_channels[i]);
2514 }
2515
2516 return n_chans;
2517 }
2518
iwl_mvm_query_set_freqs(struct iwl_mvm * mvm,struct iwl_mvm_nd_results * results,struct cfg80211_wowlan_nd_match * match,int idx)2519 static void iwl_mvm_query_set_freqs(struct iwl_mvm *mvm,
2520 struct iwl_mvm_nd_results *results,
2521 struct cfg80211_wowlan_nd_match *match,
2522 int idx)
2523 {
2524 int i;
2525
2526 if (fw_has_api(&mvm->fw->ucode_capa,
2527 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2528 struct iwl_scan_offload_profile_match *matches =
2529 (void *)results->matches;
2530
2531 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; i++)
2532 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
2533 match->channels[match->n_channels++] =
2534 mvm->nd_channels[i]->center_freq;
2535 } else {
2536 struct iwl_scan_offload_profile_match_v1 *matches =
2537 (void *)results->matches;
2538
2539 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1 * 8; i++)
2540 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
2541 match->channels[match->n_channels++] =
2542 mvm->nd_channels[i]->center_freq;
2543 }
2544 }
2545
2546 /**
2547 * enum iwl_d3_notif - d3 notifications
2548 * @IWL_D3_NOTIF_WOWLAN_INFO: WOWLAN_INFO_NOTIF was received
2549 * @IWL_D3_NOTIF_WOWLAN_WAKE_PKT: WOWLAN_WAKE_PKT_NOTIF was received
2550 * @IWL_D3_NOTIF_PROT_OFFLOAD: PROT_OFFLOAD_NOTIF was received
2551 * @IWL_D3_ND_MATCH_INFO: OFFLOAD_MATCH_INFO_NOTIF was received
2552 * @IWL_D3_NOTIF_D3_END_NOTIF: D3_END_NOTIF was received
2553 */
2554 enum iwl_d3_notif {
2555 IWL_D3_NOTIF_WOWLAN_INFO = BIT(0),
2556 IWL_D3_NOTIF_WOWLAN_WAKE_PKT = BIT(1),
2557 IWL_D3_NOTIF_PROT_OFFLOAD = BIT(2),
2558 IWL_D3_ND_MATCH_INFO = BIT(3),
2559 IWL_D3_NOTIF_D3_END_NOTIF = BIT(4)
2560 };
2561
2562 /* manage d3 resume data */
2563 struct iwl_d3_data {
2564 struct iwl_wowlan_status_data *status;
2565 bool test;
2566 u32 d3_end_flags;
2567 u32 notif_expected; /* bitmap - see &enum iwl_d3_notif */
2568 u32 notif_received; /* bitmap - see &enum iwl_d3_notif */
2569 struct iwl_mvm_nd_results *nd_results;
2570 bool nd_results_valid;
2571 };
2572
iwl_mvm_query_netdetect_reasons(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_d3_data * d3_data)2573 static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm,
2574 struct ieee80211_vif *vif,
2575 struct iwl_d3_data *d3_data)
2576 {
2577 struct cfg80211_wowlan_nd_info *net_detect = NULL;
2578 struct cfg80211_wowlan_wakeup wakeup = {
2579 .pattern_idx = -1,
2580 };
2581 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
2582 unsigned long matched_profiles;
2583 u32 reasons = 0;
2584 int i, n_matches, ret;
2585
2586 if (WARN_ON(!d3_data || !d3_data->status))
2587 goto out;
2588
2589 reasons = d3_data->status->wakeup_reasons;
2590
2591 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
2592 wakeup.rfkill_release = true;
2593
2594 if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS)
2595 goto out;
2596
2597 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
2598 WOWLAN_INFO_NOTIFICATION, 0)) {
2599 IWL_INFO(mvm, "Query FW for ND results\n");
2600 ret = iwl_mvm_netdetect_query_results(mvm, d3_data->nd_results);
2601
2602 } else {
2603 IWL_INFO(mvm, "Notification based ND results\n");
2604 ret = d3_data->nd_results_valid ? 0 : -1;
2605 }
2606
2607 if (ret || !d3_data->nd_results->matched_profiles) {
2608 wakeup_report = NULL;
2609 goto out;
2610 }
2611
2612 matched_profiles = d3_data->nd_results->matched_profiles;
2613 if (mvm->n_nd_match_sets) {
2614 n_matches = hweight_long(matched_profiles);
2615 } else {
2616 IWL_ERR(mvm, "no net detect match information available\n");
2617 n_matches = 0;
2618 }
2619
2620 net_detect = kzalloc(struct_size(net_detect, matches, n_matches),
2621 GFP_KERNEL);
2622 if (!net_detect || !n_matches)
2623 goto out_report_nd;
2624
2625 for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) {
2626 struct cfg80211_wowlan_nd_match *match;
2627 int idx, n_channels = 0;
2628
2629 n_channels = iwl_mvm_query_num_match_chans(mvm,
2630 d3_data->nd_results,
2631 i);
2632
2633 match = kzalloc(struct_size(match, channels, n_channels),
2634 GFP_KERNEL);
2635 if (!match)
2636 goto out_report_nd;
2637
2638 net_detect->matches[net_detect->n_matches++] = match;
2639
2640 /* We inverted the order of the SSIDs in the scan
2641 * request, so invert the index here.
2642 */
2643 idx = mvm->n_nd_match_sets - i - 1;
2644 match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len;
2645 memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid,
2646 match->ssid.ssid_len);
2647
2648 if (mvm->n_nd_channels < n_channels)
2649 continue;
2650
2651 iwl_mvm_query_set_freqs(mvm, d3_data->nd_results, match, i);
2652 }
2653
2654 out_report_nd:
2655 wakeup.net_detect = net_detect;
2656 out:
2657 iwl_mvm_free_nd(mvm);
2658
2659 mutex_unlock(&mvm->mutex);
2660 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
2661
2662 if (net_detect) {
2663 for (i = 0; i < net_detect->n_matches; i++)
2664 kfree(net_detect->matches[i]);
2665 kfree(net_detect);
2666 }
2667 }
2668
iwl_mvm_d3_disconnect_iter(void * data,u8 * mac,struct ieee80211_vif * vif)2669 static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac,
2670 struct ieee80211_vif *vif)
2671 {
2672 /* skip the one we keep connection on */
2673 if (data == vif)
2674 return;
2675
2676 if (vif->type == NL80211_IFTYPE_STATION)
2677 ieee80211_resume_disconnect(vif);
2678 }
2679
iwl_mvm_rt_status(struct iwl_trans * trans,u32 base,u32 * err_id)2680 static bool iwl_mvm_rt_status(struct iwl_trans *trans, u32 base, u32 *err_id)
2681 {
2682 struct error_table_start {
2683 /* cf. struct iwl_error_event_table */
2684 u32 valid;
2685 __le32 err_id;
2686 } err_info;
2687
2688 if (!base)
2689 return false;
2690
2691 iwl_trans_read_mem_bytes(trans, base,
2692 &err_info, sizeof(err_info));
2693 if (err_info.valid && err_id)
2694 *err_id = le32_to_cpu(err_info.err_id);
2695
2696 return !!err_info.valid;
2697 }
2698
iwl_mvm_check_rt_status(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2699 static bool iwl_mvm_check_rt_status(struct iwl_mvm *mvm,
2700 struct ieee80211_vif *vif)
2701 {
2702 u32 err_id;
2703
2704 /* check for lmac1 error */
2705 if (iwl_mvm_rt_status(mvm->trans,
2706 mvm->trans->dbg.lmac_error_event_table[0],
2707 &err_id)) {
2708 if (err_id == RF_KILL_INDICATOR_FOR_WOWLAN) {
2709 struct cfg80211_wowlan_wakeup wakeup = {
2710 .rfkill_release = true,
2711 };
2712 ieee80211_report_wowlan_wakeup(vif, &wakeup,
2713 GFP_KERNEL);
2714 }
2715 return true;
2716 }
2717
2718 /* check if we have lmac2 set and check for error */
2719 if (iwl_mvm_rt_status(mvm->trans,
2720 mvm->trans->dbg.lmac_error_event_table[1], NULL))
2721 return true;
2722
2723 /* check for umac error */
2724 if (iwl_mvm_rt_status(mvm->trans,
2725 mvm->trans->dbg.umac_error_event_table, NULL))
2726 return true;
2727
2728 return false;
2729 }
2730
2731 /*
2732 * This function assumes:
2733 * 1. The mutex is already held.
2734 * 2. The callee functions unlock the mutex.
2735 */
2736 static bool
iwl_mvm_choose_query_wakeup_reasons(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_d3_data * d3_data)2737 iwl_mvm_choose_query_wakeup_reasons(struct iwl_mvm *mvm,
2738 struct ieee80211_vif *vif,
2739 struct iwl_d3_data *d3_data)
2740 {
2741 lockdep_assert_held(&mvm->mutex);
2742
2743 /* if FW uses status notification, status shouldn't be NULL here */
2744 if (!d3_data->status) {
2745 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2746 u8 sta_id = mvm->net_detect ? IWL_MVM_INVALID_STA :
2747 mvmvif->deflink.ap_sta_id;
2748
2749 d3_data->status = iwl_mvm_send_wowlan_get_status(mvm, sta_id);
2750 }
2751
2752 if (mvm->net_detect) {
2753 iwl_mvm_query_netdetect_reasons(mvm, vif, d3_data);
2754 } else {
2755 bool keep = iwl_mvm_query_wakeup_reasons(mvm, vif,
2756 d3_data->status);
2757
2758 #ifdef CONFIG_IWLWIFI_DEBUGFS
2759 if (keep)
2760 mvm->keep_vif = vif;
2761 #endif
2762
2763 return keep;
2764 }
2765 return false;
2766 }
2767
2768 #define IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT (IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET | \
2769 IWL_WOWLAN_WAKEUP_BY_PATTERN | \
2770 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN |\
2771 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN_WILDCARD |\
2772 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN |\
2773 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN_WILDCARD)
2774
iwl_mvm_wowlan_store_wake_pkt(struct iwl_mvm * mvm,struct iwl_wowlan_wake_pkt_notif * notif,struct iwl_wowlan_status_data * status,u32 len)2775 static int iwl_mvm_wowlan_store_wake_pkt(struct iwl_mvm *mvm,
2776 struct iwl_wowlan_wake_pkt_notif *notif,
2777 struct iwl_wowlan_status_data *status,
2778 u32 len)
2779 {
2780 u32 data_size, packet_len = le32_to_cpu(notif->wake_packet_length);
2781
2782 if (len < sizeof(*notif)) {
2783 IWL_ERR(mvm, "Invalid WoWLAN wake packet notification!\n");
2784 return -EIO;
2785 }
2786
2787 if (WARN_ON(!status)) {
2788 IWL_ERR(mvm, "Got wake packet notification but wowlan status data is NULL\n");
2789 return -EIO;
2790 }
2791
2792 if (WARN_ON(!(status->wakeup_reasons &
2793 IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT))) {
2794 IWL_ERR(mvm, "Got wakeup packet but wakeup reason is %x\n",
2795 status->wakeup_reasons);
2796 return -EIO;
2797 }
2798
2799 data_size = len - offsetof(struct iwl_wowlan_wake_pkt_notif, wake_packet);
2800
2801 /* data_size got the padding from the notification, remove it. */
2802 if (packet_len < data_size)
2803 data_size = packet_len;
2804
2805 status->wake_packet = kmemdup(notif->wake_packet, data_size,
2806 GFP_ATOMIC);
2807
2808 if (!status->wake_packet)
2809 return -ENOMEM;
2810
2811 status->wake_packet_length = packet_len;
2812 status->wake_packet_bufsize = data_size;
2813
2814 return 0;
2815 }
2816
iwl_mvm_nd_match_info_handler(struct iwl_mvm * mvm,struct iwl_d3_data * d3_data,struct iwl_scan_offload_match_info * notif,u32 len)2817 static void iwl_mvm_nd_match_info_handler(struct iwl_mvm *mvm,
2818 struct iwl_d3_data *d3_data,
2819 struct iwl_scan_offload_match_info *notif,
2820 u32 len)
2821 {
2822 struct iwl_wowlan_status_data *status = d3_data->status;
2823 struct ieee80211_vif *vif = iwl_mvm_get_bss_vif(mvm);
2824 struct iwl_mvm_nd_results *results = d3_data->nd_results;
2825 size_t i, matches_len = sizeof(struct iwl_scan_offload_profile_match) *
2826 iwl_umac_scan_get_max_profiles(mvm->fw);
2827
2828 if (IS_ERR_OR_NULL(vif))
2829 return;
2830
2831 if (len < sizeof(struct iwl_scan_offload_match_info)) {
2832 IWL_ERR(mvm, "Invalid scan match info notification\n");
2833 return;
2834 }
2835
2836 if (!mvm->net_detect) {
2837 IWL_ERR(mvm, "Unexpected scan match info notification\n");
2838 return;
2839 }
2840
2841 if (!status || status->wakeup_reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
2842 IWL_ERR(mvm,
2843 "Ignore scan match info notification: no reason\n");
2844 return;
2845 }
2846
2847 #ifdef CONFIG_IWLWIFI_DEBUGFS
2848 mvm->last_netdetect_scans = le32_to_cpu(notif->n_scans_done);
2849 #endif
2850
2851 results->matched_profiles = le32_to_cpu(notif->matched_profiles);
2852 IWL_INFO(mvm, "number of matched profiles=%u\n",
2853 results->matched_profiles);
2854
2855 if (results->matched_profiles) {
2856 memcpy(results->matches, notif->matches, matches_len);
2857 d3_data->nd_results_valid = TRUE;
2858 }
2859
2860 /* no scan should be active at this point */
2861 mvm->scan_status = 0;
2862 for (i = 0; i < mvm->max_scans; i++)
2863 mvm->scan_uid_status[i] = 0;
2864 }
2865
iwl_mvm_wait_d3_notif(struct iwl_notif_wait_data * notif_wait,struct iwl_rx_packet * pkt,void * data)2866 static bool iwl_mvm_wait_d3_notif(struct iwl_notif_wait_data *notif_wait,
2867 struct iwl_rx_packet *pkt, void *data)
2868 {
2869 struct iwl_mvm *mvm =
2870 container_of(notif_wait, struct iwl_mvm, notif_wait);
2871 struct iwl_d3_data *d3_data = data;
2872 u32 len;
2873 int ret;
2874 int wowlan_info_ver = iwl_fw_lookup_notif_ver(mvm->fw,
2875 PROT_OFFLOAD_GROUP,
2876 WOWLAN_INFO_NOTIFICATION,
2877 IWL_FW_CMD_VER_UNKNOWN);
2878
2879
2880 switch (WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) {
2881 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION): {
2882 struct iwl_wowlan_info_notif *notif;
2883
2884 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_INFO) {
2885 /* We might get two notifications due to dual bss */
2886 IWL_DEBUG_WOWLAN(mvm,
2887 "Got additional wowlan info notification\n");
2888 break;
2889 }
2890
2891 if (wowlan_info_ver < 2) {
2892 struct iwl_wowlan_info_notif_v1 *notif_v1 = (void *)pkt->data;
2893
2894 notif = kmemdup(notif_v1, sizeof(*notif), GFP_ATOMIC);
2895 if (!notif)
2896 return false;
2897
2898 notif->tid_tear_down = notif_v1->tid_tear_down;
2899 notif->station_id = notif_v1->station_id;
2900 memset_after(notif, 0, station_id);
2901 } else {
2902 notif = (void *)pkt->data;
2903 }
2904
2905 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_INFO;
2906 len = iwl_rx_packet_payload_len(pkt);
2907 iwl_mvm_parse_wowlan_info_notif(mvm, notif, d3_data->status,
2908 len);
2909
2910 if (wowlan_info_ver < 2)
2911 kfree(notif);
2912
2913 if (d3_data->status &&
2914 d3_data->status->wakeup_reasons & IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT)
2915 /* We are supposed to get also wake packet notif */
2916 d3_data->notif_expected |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT;
2917
2918 break;
2919 }
2920 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION): {
2921 struct iwl_wowlan_wake_pkt_notif *notif = (void *)pkt->data;
2922
2923 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_WAKE_PKT) {
2924 /* We shouldn't get two wake packet notifications */
2925 IWL_ERR(mvm,
2926 "Got additional wowlan wake packet notification\n");
2927 } else {
2928 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT;
2929 len = iwl_rx_packet_payload_len(pkt);
2930 ret = iwl_mvm_wowlan_store_wake_pkt(mvm, notif,
2931 d3_data->status,
2932 len);
2933 if (ret)
2934 IWL_ERR(mvm,
2935 "Can't parse WOWLAN_WAKE_PKT_NOTIFICATION\n");
2936 }
2937
2938 break;
2939 }
2940 case WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF): {
2941 struct iwl_scan_offload_match_info *notif = (void *)pkt->data;
2942
2943 if (d3_data->notif_received & IWL_D3_ND_MATCH_INFO) {
2944 IWL_ERR(mvm,
2945 "Got additional netdetect match info\n");
2946 break;
2947 }
2948
2949 d3_data->notif_received |= IWL_D3_ND_MATCH_INFO;
2950
2951 /* explicitly set this in the 'expected' as well */
2952 d3_data->notif_expected |= IWL_D3_ND_MATCH_INFO;
2953
2954 len = iwl_rx_packet_payload_len(pkt);
2955 iwl_mvm_nd_match_info_handler(mvm, d3_data, notif, len);
2956 break;
2957 }
2958 case WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION): {
2959 struct iwl_mvm_d3_end_notif *notif = (void *)pkt->data;
2960
2961 d3_data->d3_end_flags = __le32_to_cpu(notif->flags);
2962 d3_data->notif_received |= IWL_D3_NOTIF_D3_END_NOTIF;
2963
2964 break;
2965 }
2966 default:
2967 WARN_ON(1);
2968 }
2969
2970 return d3_data->notif_received == d3_data->notif_expected;
2971 }
2972
iwl_mvm_resume_firmware(struct iwl_mvm * mvm,bool test)2973 static int iwl_mvm_resume_firmware(struct iwl_mvm *mvm, bool test)
2974 {
2975 int ret;
2976 enum iwl_d3_status d3_status;
2977 struct iwl_host_cmd cmd = {
2978 .id = D0I3_END_CMD,
2979 .flags = CMD_WANT_SKB | CMD_SEND_IN_D3,
2980 };
2981 bool reset = fw_has_capa(&mvm->fw->ucode_capa,
2982 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2983
2984 ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, !reset);
2985 if (ret)
2986 return ret;
2987
2988 if (d3_status != IWL_D3_STATUS_ALIVE) {
2989 IWL_INFO(mvm, "Device was reset during suspend\n");
2990 return -ENOENT;
2991 }
2992
2993 /*
2994 * We should trigger resume flow using command only for 22000 family
2995 * AX210 and above don't need the command since they have
2996 * the doorbell interrupt.
2997 */
2998 if (mvm->trans->trans_cfg->device_family <= IWL_DEVICE_FAMILY_22000 &&
2999 fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_D0I3_END_FIRST)) {
3000 ret = iwl_mvm_send_cmd(mvm, &cmd);
3001 if (ret < 0)
3002 IWL_ERR(mvm, "Failed to send D0I3_END_CMD first (%d)\n",
3003 ret);
3004 }
3005
3006 return ret;
3007 }
3008
3009 #define IWL_MVM_D3_NOTIF_TIMEOUT (HZ / 5)
3010
iwl_mvm_d3_notif_wait(struct iwl_mvm * mvm,struct iwl_d3_data * d3_data)3011 static int iwl_mvm_d3_notif_wait(struct iwl_mvm *mvm,
3012 struct iwl_d3_data *d3_data)
3013 {
3014 static const u16 d3_resume_notif[] = {
3015 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION),
3016 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION),
3017 WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF),
3018 WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION)
3019 };
3020 struct iwl_notification_wait wait_d3_notif;
3021 int ret;
3022
3023 iwl_init_notification_wait(&mvm->notif_wait, &wait_d3_notif,
3024 d3_resume_notif, ARRAY_SIZE(d3_resume_notif),
3025 iwl_mvm_wait_d3_notif, d3_data);
3026
3027 ret = iwl_mvm_resume_firmware(mvm, d3_data->test);
3028 if (ret) {
3029 iwl_remove_notification(&mvm->notif_wait, &wait_d3_notif);
3030 return ret;
3031 }
3032
3033 return iwl_wait_notification(&mvm->notif_wait, &wait_d3_notif,
3034 IWL_MVM_D3_NOTIF_TIMEOUT);
3035 }
3036
iwl_mvm_d3_resume_notif_based(struct iwl_mvm * mvm)3037 static inline bool iwl_mvm_d3_resume_notif_based(struct iwl_mvm *mvm)
3038 {
3039 return iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
3040 WOWLAN_INFO_NOTIFICATION, 0) &&
3041 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
3042 WOWLAN_WAKE_PKT_NOTIFICATION, 0) &&
3043 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
3044 D3_END_NOTIFICATION, 0);
3045 }
3046
__iwl_mvm_resume(struct iwl_mvm * mvm,bool test)3047 static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test)
3048 {
3049 struct ieee80211_vif *vif = NULL;
3050 int ret = 1;
3051 struct iwl_mvm_nd_results results = {};
3052 struct iwl_d3_data d3_data = {
3053 .test = test,
3054 .notif_expected =
3055 IWL_D3_NOTIF_WOWLAN_INFO |
3056 IWL_D3_NOTIF_D3_END_NOTIF,
3057 .nd_results_valid = false,
3058 .nd_results = &results,
3059 };
3060 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
3061 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
3062 bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa,
3063 IWL_UCODE_TLV_CAPA_D0I3_END_FIRST);
3064 bool resume_notif_based = iwl_mvm_d3_resume_notif_based(mvm);
3065 bool keep = false;
3066
3067 mutex_lock(&mvm->mutex);
3068
3069 mvm->last_reset_or_resume_time_jiffies = jiffies;
3070
3071 /* get the BSS vif pointer again */
3072 vif = iwl_mvm_get_bss_vif(mvm);
3073 if (IS_ERR_OR_NULL(vif))
3074 goto err;
3075
3076 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
3077
3078 if (iwl_mvm_check_rt_status(mvm, vif)) {
3079 set_bit(STATUS_FW_ERROR, &mvm->trans->status);
3080 iwl_mvm_dump_nic_error_log(mvm);
3081 iwl_dbg_tlv_time_point(&mvm->fwrt,
3082 IWL_FW_INI_TIME_POINT_FW_ASSERT, NULL);
3083 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert,
3084 false, 0);
3085 ret = 1;
3086 goto err;
3087 }
3088
3089 if (resume_notif_based) {
3090 d3_data.status = kzalloc(sizeof(*d3_data.status), GFP_KERNEL);
3091 if (!d3_data.status) {
3092 IWL_ERR(mvm, "Failed to allocate wowlan status\n");
3093 ret = -ENOMEM;
3094 goto err;
3095 }
3096
3097 ret = iwl_mvm_d3_notif_wait(mvm, &d3_data);
3098 if (ret)
3099 goto err;
3100 } else {
3101 ret = iwl_mvm_resume_firmware(mvm, test);
3102 if (ret < 0)
3103 goto err;
3104 }
3105
3106 /* after the successful handshake, we're out of D3 */
3107 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
3108
3109 /* when reset is required we can't send these following commands */
3110 if (d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)
3111 goto query_wakeup_reasons;
3112
3113 /*
3114 * Query the current location and source from the D3 firmware so we
3115 * can play it back when we re-intiailize the D0 firmware
3116 */
3117 iwl_mvm_update_changed_regdom(mvm);
3118
3119 /* Re-configure PPAG settings */
3120 iwl_mvm_ppag_send_cmd(mvm);
3121
3122 if (!unified_image)
3123 /* Re-configure default SAR profile */
3124 iwl_mvm_sar_select_profile(mvm, 1, 1);
3125
3126 if (mvm->net_detect && unified_image) {
3127 /* If this is a non-unified image, we restart the FW,
3128 * so no need to stop the netdetect scan. If that
3129 * fails, continue and try to get the wake-up reasons,
3130 * but trigger a HW restart by keeping a failure code
3131 * in ret.
3132 */
3133 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT,
3134 false);
3135 }
3136
3137 query_wakeup_reasons:
3138 keep = iwl_mvm_choose_query_wakeup_reasons(mvm, vif, &d3_data);
3139 /* has unlocked the mutex, so skip that */
3140 goto out;
3141
3142 err:
3143 mutex_unlock(&mvm->mutex);
3144 out:
3145 if (d3_data.status)
3146 kfree(d3_data.status->wake_packet);
3147 kfree(d3_data.status);
3148 iwl_mvm_free_nd(mvm);
3149
3150 if (!d3_data.test && !mvm->net_detect)
3151 ieee80211_iterate_active_interfaces_mtx(mvm->hw,
3152 IEEE80211_IFACE_ITER_NORMAL,
3153 iwl_mvm_d3_disconnect_iter,
3154 keep ? vif : NULL);
3155
3156 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
3157
3158 /* no need to reset the device in unified images, if successful */
3159 if (unified_image && !ret) {
3160 /* nothing else to do if we already sent D0I3_END_CMD */
3161 if (d0i3_first)
3162 return 0;
3163
3164 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
3165 D3_END_NOTIFICATION, 0)) {
3166 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL);
3167 if (!ret)
3168 return 0;
3169 } else if (!(d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)) {
3170 return 0;
3171 }
3172 }
3173
3174 /*
3175 * Reconfigure the device in one of the following cases:
3176 * 1. We are not using a unified image
3177 * 2. We are using a unified image but had an error while exiting D3
3178 */
3179 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
3180
3181 /* regardless of what happened, we're now out of D3 */
3182 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
3183
3184 return 1;
3185 }
3186
iwl_mvm_resume(struct ieee80211_hw * hw)3187 int iwl_mvm_resume(struct ieee80211_hw *hw)
3188 {
3189 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3190 int ret;
3191
3192 ret = __iwl_mvm_resume(mvm, false);
3193
3194 iwl_mvm_resume_tcm(mvm);
3195
3196 iwl_fw_runtime_resume(&mvm->fwrt);
3197
3198 return ret;
3199 }
3200
iwl_mvm_set_wakeup(struct ieee80211_hw * hw,bool enabled)3201 void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled)
3202 {
3203 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3204
3205 device_set_wakeup_enable(mvm->trans->dev, enabled);
3206 }
3207
3208 #ifdef CONFIG_IWLWIFI_DEBUGFS
iwl_mvm_d3_test_open(struct inode * inode,struct file * file)3209 static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file)
3210 {
3211 struct iwl_mvm *mvm = inode->i_private;
3212 int err;
3213
3214 if (mvm->d3_test_active)
3215 return -EBUSY;
3216
3217 file->private_data = inode->i_private;
3218
3219 iwl_mvm_pause_tcm(mvm, true);
3220
3221 iwl_fw_runtime_suspend(&mvm->fwrt);
3222
3223 /* start pseudo D3 */
3224 rtnl_lock();
3225 wiphy_lock(mvm->hw->wiphy);
3226 err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true);
3227 wiphy_unlock(mvm->hw->wiphy);
3228 rtnl_unlock();
3229 if (err > 0)
3230 err = -EINVAL;
3231 if (err)
3232 return err;
3233
3234 mvm->d3_test_active = true;
3235 mvm->keep_vif = NULL;
3236 return 0;
3237 }
3238
iwl_mvm_d3_test_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)3239 static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf,
3240 size_t count, loff_t *ppos)
3241 {
3242 struct iwl_mvm *mvm = file->private_data;
3243 u32 pme_asserted;
3244
3245 while (true) {
3246 /* read pme_ptr if available */
3247 if (mvm->d3_test_pme_ptr) {
3248 pme_asserted = iwl_trans_read_mem32(mvm->trans,
3249 mvm->d3_test_pme_ptr);
3250 if (pme_asserted)
3251 break;
3252 }
3253
3254 if (msleep_interruptible(100))
3255 break;
3256 }
3257
3258 return 0;
3259 }
3260
iwl_mvm_d3_test_disconn_work_iter(void * _data,u8 * mac,struct ieee80211_vif * vif)3261 static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac,
3262 struct ieee80211_vif *vif)
3263 {
3264 /* skip the one we keep connection on */
3265 if (_data == vif)
3266 return;
3267
3268 if (vif->type == NL80211_IFTYPE_STATION)
3269 ieee80211_connection_loss(vif);
3270 }
3271
iwl_mvm_d3_test_release(struct inode * inode,struct file * file)3272 static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file)
3273 {
3274 struct iwl_mvm *mvm = inode->i_private;
3275 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
3276 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
3277
3278 mvm->d3_test_active = false;
3279
3280 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
3281
3282 rtnl_lock();
3283 wiphy_lock(mvm->hw->wiphy);
3284 __iwl_mvm_resume(mvm, true);
3285 wiphy_unlock(mvm->hw->wiphy);
3286 rtnl_unlock();
3287
3288 iwl_mvm_resume_tcm(mvm);
3289
3290 iwl_fw_runtime_resume(&mvm->fwrt);
3291
3292 iwl_abort_notification_waits(&mvm->notif_wait);
3293 if (!unified_image) {
3294 int remaining_time = 10;
3295
3296 ieee80211_restart_hw(mvm->hw);
3297
3298 /* wait for restart and disconnect all interfaces */
3299 while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
3300 remaining_time > 0) {
3301 remaining_time--;
3302 msleep(1000);
3303 }
3304
3305 if (remaining_time == 0)
3306 IWL_ERR(mvm, "Timed out waiting for HW restart!\n");
3307 }
3308
3309 ieee80211_iterate_active_interfaces_atomic(
3310 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
3311 iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif);
3312
3313 return 0;
3314 }
3315
3316 const struct file_operations iwl_dbgfs_d3_test_ops = {
3317 .llseek = no_llseek,
3318 .open = iwl_mvm_d3_test_open,
3319 .read = iwl_mvm_d3_test_read,
3320 .release = iwl_mvm_d3_test_release,
3321 };
3322 #endif
3323