1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /*
3 * Copyright (C) 2012-2014, 2018-2023 Intel Corporation
4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
5 * Copyright (C) 2016-2017 Intel Deutschland GmbH
6 */
7 #include <linux/etherdevice.h>
8 #include <linux/ip.h>
9 #include <linux/fs.h>
10 #include <net/cfg80211.h>
11 #include <net/ipv6.h>
12 #include <net/tcp.h>
13 #include <net/addrconf.h>
14 #include "iwl-modparams.h"
15 #include "fw-api.h"
16 #include "mvm.h"
17 #include "fw/img.h"
18
iwl_mvm_set_rekey_data(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct cfg80211_gtk_rekey_data * data)19 void iwl_mvm_set_rekey_data(struct ieee80211_hw *hw,
20 struct ieee80211_vif *vif,
21 struct cfg80211_gtk_rekey_data *data)
22 {
23 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
24 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
25
26 mutex_lock(&mvm->mutex);
27
28 mvmvif->rekey_data.kek_len = data->kek_len;
29 mvmvif->rekey_data.kck_len = data->kck_len;
30 memcpy(mvmvif->rekey_data.kek, data->kek, data->kek_len);
31 memcpy(mvmvif->rekey_data.kck, data->kck, data->kck_len);
32 mvmvif->rekey_data.akm = data->akm & 0xFF;
33 mvmvif->rekey_data.replay_ctr =
34 cpu_to_le64(be64_to_cpup((const __be64 *)data->replay_ctr));
35 mvmvif->rekey_data.valid = true;
36
37 mutex_unlock(&mvm->mutex);
38 }
39
40 #if IS_ENABLED(CONFIG_IPV6)
iwl_mvm_ipv6_addr_change(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct inet6_dev * idev)41 void iwl_mvm_ipv6_addr_change(struct ieee80211_hw *hw,
42 struct ieee80211_vif *vif,
43 struct inet6_dev *idev)
44 {
45 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
46 struct inet6_ifaddr *ifa;
47 int idx = 0;
48
49 memset(mvmvif->tentative_addrs, 0, sizeof(mvmvif->tentative_addrs));
50
51 read_lock_bh(&idev->lock);
52 list_for_each_entry(ifa, &idev->addr_list, if_list) {
53 mvmvif->target_ipv6_addrs[idx] = ifa->addr;
54 if (ifa->flags & IFA_F_TENTATIVE)
55 __set_bit(idx, mvmvif->tentative_addrs);
56 idx++;
57 if (idx >= IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_MAX)
58 break;
59 }
60 read_unlock_bh(&idev->lock);
61
62 mvmvif->num_target_ipv6_addrs = idx;
63 }
64 #endif
65
iwl_mvm_set_default_unicast_key(struct ieee80211_hw * hw,struct ieee80211_vif * vif,int idx)66 void iwl_mvm_set_default_unicast_key(struct ieee80211_hw *hw,
67 struct ieee80211_vif *vif, int idx)
68 {
69 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
70
71 mvmvif->tx_key_idx = idx;
72 }
73
iwl_mvm_convert_p1k(u16 * p1k,__le16 * out)74 static void iwl_mvm_convert_p1k(u16 *p1k, __le16 *out)
75 {
76 int i;
77
78 for (i = 0; i < IWL_P1K_SIZE; i++)
79 out[i] = cpu_to_le16(p1k[i]);
80 }
81
iwl_mvm_find_max_pn(struct ieee80211_key_conf * key,struct iwl_mvm_key_pn * ptk_pn,struct ieee80211_key_seq * seq,int tid,int queues)82 static const u8 *iwl_mvm_find_max_pn(struct ieee80211_key_conf *key,
83 struct iwl_mvm_key_pn *ptk_pn,
84 struct ieee80211_key_seq *seq,
85 int tid, int queues)
86 {
87 const u8 *ret = seq->ccmp.pn;
88 int i;
89
90 /* get the PN from mac80211, used on the default queue */
91 ieee80211_get_key_rx_seq(key, tid, seq);
92
93 /* and use the internal data for the other queues */
94 for (i = 1; i < queues; i++) {
95 const u8 *tmp = ptk_pn->q[i].pn[tid];
96
97 if (memcmp(ret, tmp, IEEE80211_CCMP_PN_LEN) <= 0)
98 ret = tmp;
99 }
100
101 return ret;
102 }
103
104 struct wowlan_key_reprogram_data {
105 bool error;
106 int wep_key_idx;
107 };
108
iwl_mvm_wowlan_program_keys(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key,void * _data)109 static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw,
110 struct ieee80211_vif *vif,
111 struct ieee80211_sta *sta,
112 struct ieee80211_key_conf *key,
113 void *_data)
114 {
115 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
116 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
117 struct wowlan_key_reprogram_data *data = _data;
118 int ret;
119
120 switch (key->cipher) {
121 case WLAN_CIPHER_SUITE_WEP40:
122 case WLAN_CIPHER_SUITE_WEP104: { /* hack it for now */
123 struct {
124 struct iwl_mvm_wep_key_cmd wep_key_cmd;
125 struct iwl_mvm_wep_key wep_key;
126 } __packed wkc = {
127 .wep_key_cmd.mac_id_n_color =
128 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
129 mvmvif->color)),
130 .wep_key_cmd.num_keys = 1,
131 /* firmware sets STA_KEY_FLG_WEP_13BYTES */
132 .wep_key_cmd.decryption_type = STA_KEY_FLG_WEP,
133 .wep_key.key_index = key->keyidx,
134 .wep_key.key_size = key->keylen,
135 };
136
137 /*
138 * This will fail -- the key functions don't set support
139 * pairwise WEP keys. However, that's better than silently
140 * failing WoWLAN. Or maybe not?
141 */
142 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
143 break;
144
145 memcpy(&wkc.wep_key.key[3], key->key, key->keylen);
146 if (key->keyidx == mvmvif->tx_key_idx) {
147 /* TX key must be at offset 0 */
148 wkc.wep_key.key_offset = 0;
149 } else {
150 /* others start at 1 */
151 data->wep_key_idx++;
152 wkc.wep_key.key_offset = data->wep_key_idx;
153 }
154
155 mutex_lock(&mvm->mutex);
156 ret = iwl_mvm_send_cmd_pdu(mvm, WEP_KEY, 0, sizeof(wkc), &wkc);
157 data->error = ret != 0;
158
159 mvm->ptk_ivlen = key->iv_len;
160 mvm->ptk_icvlen = key->icv_len;
161 mvm->gtk_ivlen = key->iv_len;
162 mvm->gtk_icvlen = key->icv_len;
163 mutex_unlock(&mvm->mutex);
164
165 /* don't upload key again */
166 return;
167 }
168 default:
169 data->error = true;
170 return;
171 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
172 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
173 return;
174 case WLAN_CIPHER_SUITE_AES_CMAC:
175 /*
176 * Ignore CMAC keys -- the WoWLAN firmware doesn't support them
177 * but we also shouldn't abort suspend due to that. It does have
178 * support for the IGTK key renewal, but doesn't really use the
179 * IGTK for anything. This means we could spuriously wake up or
180 * be deauthenticated, but that was considered acceptable.
181 */
182 return;
183 case WLAN_CIPHER_SUITE_TKIP:
184 case WLAN_CIPHER_SUITE_CCMP:
185 case WLAN_CIPHER_SUITE_GCMP:
186 case WLAN_CIPHER_SUITE_GCMP_256:
187 break;
188 }
189
190 mutex_lock(&mvm->mutex);
191 /*
192 * The D3 firmware hardcodes the key offset 0 as the key it
193 * uses to transmit packets to the AP, i.e. the PTK.
194 */
195 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
196 mvm->ptk_ivlen = key->iv_len;
197 mvm->ptk_icvlen = key->icv_len;
198 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 0);
199 } else {
200 /*
201 * firmware only supports TSC/RSC for a single key,
202 * so if there are multiple keep overwriting them
203 * with new ones -- this relies on mac80211 doing
204 * list_add_tail().
205 */
206 mvm->gtk_ivlen = key->iv_len;
207 mvm->gtk_icvlen = key->icv_len;
208 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 1);
209 }
210 mutex_unlock(&mvm->mutex);
211 data->error = ret != 0;
212 }
213
214 struct wowlan_key_rsc_tsc_data {
215 struct iwl_wowlan_rsc_tsc_params_cmd_v4 *rsc_tsc;
216 bool have_rsc_tsc;
217 };
218
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)219 static void iwl_mvm_wowlan_get_rsc_tsc_data(struct ieee80211_hw *hw,
220 struct ieee80211_vif *vif,
221 struct ieee80211_sta *sta,
222 struct ieee80211_key_conf *key,
223 void *_data)
224 {
225 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
226 struct wowlan_key_rsc_tsc_data *data = _data;
227 struct aes_sc *aes_sc;
228 struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
229 struct ieee80211_key_seq seq;
230 int i;
231
232 switch (key->cipher) {
233 default:
234 break;
235 case WLAN_CIPHER_SUITE_TKIP:
236 if (sta) {
237 u64 pn64;
238
239 tkip_sc =
240 data->rsc_tsc->params.all_tsc_rsc.tkip.unicast_rsc;
241 tkip_tx_sc =
242 &data->rsc_tsc->params.all_tsc_rsc.tkip.tsc;
243
244 pn64 = atomic64_read(&key->tx_pn);
245 tkip_tx_sc->iv16 = cpu_to_le16(TKIP_PN_TO_IV16(pn64));
246 tkip_tx_sc->iv32 = cpu_to_le32(TKIP_PN_TO_IV32(pn64));
247 } else {
248 tkip_sc =
249 data->rsc_tsc->params.all_tsc_rsc.tkip.multicast_rsc;
250 }
251
252 /*
253 * For non-QoS this relies on the fact that both the uCode and
254 * mac80211 use TID 0 (as they need to to avoid replay attacks)
255 * for checking the IV in the frames.
256 */
257 for (i = 0; i < IWL_NUM_RSC; i++) {
258 ieee80211_get_key_rx_seq(key, i, &seq);
259 tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
260 tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
261 }
262
263 data->have_rsc_tsc = true;
264 break;
265 case WLAN_CIPHER_SUITE_CCMP:
266 case WLAN_CIPHER_SUITE_GCMP:
267 case WLAN_CIPHER_SUITE_GCMP_256:
268 if (sta) {
269 struct aes_sc *aes_tx_sc;
270 u64 pn64;
271
272 aes_sc =
273 data->rsc_tsc->params.all_tsc_rsc.aes.unicast_rsc;
274 aes_tx_sc =
275 &data->rsc_tsc->params.all_tsc_rsc.aes.tsc;
276
277 pn64 = atomic64_read(&key->tx_pn);
278 aes_tx_sc->pn = cpu_to_le64(pn64);
279 } else {
280 aes_sc =
281 data->rsc_tsc->params.all_tsc_rsc.aes.multicast_rsc;
282 }
283
284 /*
285 * For non-QoS this relies on the fact that both the uCode and
286 * mac80211/our RX code use TID 0 for checking the PN.
287 */
288 if (sta && iwl_mvm_has_new_rx_api(mvm)) {
289 struct iwl_mvm_sta *mvmsta;
290 struct iwl_mvm_key_pn *ptk_pn;
291 const u8 *pn;
292
293 mvmsta = iwl_mvm_sta_from_mac80211(sta);
294 rcu_read_lock();
295 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]);
296 if (WARN_ON(!ptk_pn)) {
297 rcu_read_unlock();
298 break;
299 }
300
301 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
302 pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i,
303 mvm->trans->num_rx_queues);
304 aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
305 ((u64)pn[4] << 8) |
306 ((u64)pn[3] << 16) |
307 ((u64)pn[2] << 24) |
308 ((u64)pn[1] << 32) |
309 ((u64)pn[0] << 40));
310 }
311
312 rcu_read_unlock();
313 } else {
314 for (i = 0; i < IWL_NUM_RSC; i++) {
315 u8 *pn = seq.ccmp.pn;
316
317 ieee80211_get_key_rx_seq(key, i, &seq);
318 aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
319 ((u64)pn[4] << 8) |
320 ((u64)pn[3] << 16) |
321 ((u64)pn[2] << 24) |
322 ((u64)pn[1] << 32) |
323 ((u64)pn[0] << 40));
324 }
325 }
326 data->have_rsc_tsc = true;
327 break;
328 }
329 }
330
331 struct wowlan_key_rsc_v5_data {
332 struct iwl_wowlan_rsc_tsc_params_cmd *rsc;
333 bool have_rsc;
334 int gtks;
335 int gtk_ids[4];
336 };
337
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)338 static void iwl_mvm_wowlan_get_rsc_v5_data(struct ieee80211_hw *hw,
339 struct ieee80211_vif *vif,
340 struct ieee80211_sta *sta,
341 struct ieee80211_key_conf *key,
342 void *_data)
343 {
344 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
345 struct wowlan_key_rsc_v5_data *data = _data;
346 struct ieee80211_key_seq seq;
347 __le64 *rsc;
348 int i;
349
350 /* only for ciphers that can be PTK/GTK */
351 switch (key->cipher) {
352 default:
353 return;
354 case WLAN_CIPHER_SUITE_TKIP:
355 case WLAN_CIPHER_SUITE_CCMP:
356 case WLAN_CIPHER_SUITE_GCMP:
357 case WLAN_CIPHER_SUITE_GCMP_256:
358 break;
359 }
360
361 if (sta) {
362 rsc = data->rsc->ucast_rsc;
363 } else {
364 if (WARN_ON(data->gtks >= ARRAY_SIZE(data->gtk_ids)))
365 return;
366 data->gtk_ids[data->gtks] = key->keyidx;
367 rsc = data->rsc->mcast_rsc[data->gtks % 2];
368 if (WARN_ON(key->keyidx >=
369 ARRAY_SIZE(data->rsc->mcast_key_id_map)))
370 return;
371 data->rsc->mcast_key_id_map[key->keyidx] = data->gtks % 2;
372 if (data->gtks >= 2) {
373 int prev = data->gtks - 2;
374 int prev_idx = data->gtk_ids[prev];
375
376 data->rsc->mcast_key_id_map[prev_idx] =
377 IWL_MCAST_KEY_MAP_INVALID;
378 }
379 data->gtks++;
380 }
381
382 switch (key->cipher) {
383 default:
384 WARN_ON(1);
385 break;
386 case WLAN_CIPHER_SUITE_TKIP:
387
388 /*
389 * For non-QoS this relies on the fact that both the uCode and
390 * mac80211 use TID 0 (as they need to to avoid replay attacks)
391 * for checking the IV in the frames.
392 */
393 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
394 ieee80211_get_key_rx_seq(key, i, &seq);
395
396 rsc[i] = cpu_to_le64(((u64)seq.tkip.iv32 << 16) |
397 seq.tkip.iv16);
398 }
399
400 data->have_rsc = true;
401 break;
402 case WLAN_CIPHER_SUITE_CCMP:
403 case WLAN_CIPHER_SUITE_GCMP:
404 case WLAN_CIPHER_SUITE_GCMP_256:
405 /*
406 * For non-QoS this relies on the fact that both the uCode and
407 * mac80211/our RX code use TID 0 for checking the PN.
408 */
409 if (sta) {
410 struct iwl_mvm_sta *mvmsta;
411 struct iwl_mvm_key_pn *ptk_pn;
412 const u8 *pn;
413
414 mvmsta = iwl_mvm_sta_from_mac80211(sta);
415 rcu_read_lock();
416 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]);
417 if (WARN_ON(!ptk_pn)) {
418 rcu_read_unlock();
419 break;
420 }
421
422 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
423 pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i,
424 mvm->trans->num_rx_queues);
425 rsc[i] = cpu_to_le64((u64)pn[5] |
426 ((u64)pn[4] << 8) |
427 ((u64)pn[3] << 16) |
428 ((u64)pn[2] << 24) |
429 ((u64)pn[1] << 32) |
430 ((u64)pn[0] << 40));
431 }
432
433 rcu_read_unlock();
434 } else {
435 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
436 u8 *pn = seq.ccmp.pn;
437
438 ieee80211_get_key_rx_seq(key, i, &seq);
439 rsc[i] = cpu_to_le64((u64)pn[5] |
440 ((u64)pn[4] << 8) |
441 ((u64)pn[3] << 16) |
442 ((u64)pn[2] << 24) |
443 ((u64)pn[1] << 32) |
444 ((u64)pn[0] << 40));
445 }
446 }
447 data->have_rsc = true;
448 break;
449 }
450 }
451
iwl_mvm_wowlan_config_rsc_tsc(struct iwl_mvm * mvm,struct ieee80211_vif * vif)452 static int iwl_mvm_wowlan_config_rsc_tsc(struct iwl_mvm *mvm,
453 struct ieee80211_vif *vif)
454 {
455 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
456 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TSC_RSC_PARAM,
457 IWL_FW_CMD_VER_UNKNOWN);
458 int ret;
459
460 if (ver == 5) {
461 struct wowlan_key_rsc_v5_data data = {};
462 int i;
463
464 data.rsc = kmalloc(sizeof(*data.rsc), GFP_KERNEL);
465 if (!data.rsc)
466 return -ENOMEM;
467
468 memset(data.rsc, 0xff, sizeof(*data.rsc));
469
470 for (i = 0; i < ARRAY_SIZE(data.rsc->mcast_key_id_map); i++)
471 data.rsc->mcast_key_id_map[i] =
472 IWL_MCAST_KEY_MAP_INVALID;
473 data.rsc->sta_id = cpu_to_le32(mvmvif->deflink.ap_sta_id);
474
475 ieee80211_iter_keys(mvm->hw, vif,
476 iwl_mvm_wowlan_get_rsc_v5_data,
477 &data);
478
479 if (data.have_rsc)
480 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM,
481 CMD_ASYNC, sizeof(*data.rsc),
482 data.rsc);
483 else
484 ret = 0;
485 kfree(data.rsc);
486 } else if (ver == 4 || ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN) {
487 struct wowlan_key_rsc_tsc_data data = {};
488 int size;
489
490 data.rsc_tsc = kzalloc(sizeof(*data.rsc_tsc), GFP_KERNEL);
491 if (!data.rsc_tsc)
492 return -ENOMEM;
493
494 if (ver == 4) {
495 size = sizeof(*data.rsc_tsc);
496 data.rsc_tsc->sta_id =
497 cpu_to_le32(mvmvif->deflink.ap_sta_id);
498 } else {
499 /* ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN */
500 size = sizeof(data.rsc_tsc->params);
501 }
502
503 ieee80211_iter_keys(mvm->hw, vif,
504 iwl_mvm_wowlan_get_rsc_tsc_data,
505 &data);
506
507 if (data.have_rsc_tsc)
508 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM,
509 CMD_ASYNC, size,
510 data.rsc_tsc);
511 else
512 ret = 0;
513 kfree(data.rsc_tsc);
514 } else {
515 ret = 0;
516 WARN_ON_ONCE(1);
517 }
518
519 return ret;
520 }
521
522 struct wowlan_key_tkip_data {
523 struct iwl_wowlan_tkip_params_cmd tkip;
524 bool have_tkip_keys;
525 };
526
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)527 static void iwl_mvm_wowlan_get_tkip_data(struct ieee80211_hw *hw,
528 struct ieee80211_vif *vif,
529 struct ieee80211_sta *sta,
530 struct ieee80211_key_conf *key,
531 void *_data)
532 {
533 struct wowlan_key_tkip_data *data = _data;
534 struct iwl_p1k_cache *rx_p1ks;
535 u8 *rx_mic_key;
536 struct ieee80211_key_seq seq;
537 u32 cur_rx_iv32 = 0;
538 u16 p1k[IWL_P1K_SIZE];
539 int i;
540
541 switch (key->cipher) {
542 default:
543 break;
544 case WLAN_CIPHER_SUITE_TKIP:
545 if (sta) {
546 u64 pn64;
547
548 rx_p1ks = data->tkip.rx_uni;
549
550 pn64 = atomic64_read(&key->tx_pn);
551
552 ieee80211_get_tkip_p1k_iv(key, TKIP_PN_TO_IV32(pn64),
553 p1k);
554 iwl_mvm_convert_p1k(p1k, data->tkip.tx.p1k);
555
556 memcpy(data->tkip.mic_keys.tx,
557 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
558 IWL_MIC_KEY_SIZE);
559
560 rx_mic_key = data->tkip.mic_keys.rx_unicast;
561 } else {
562 rx_p1ks = data->tkip.rx_multi;
563 rx_mic_key = data->tkip.mic_keys.rx_mcast;
564 }
565
566 for (i = 0; i < IWL_NUM_RSC; i++) {
567 ieee80211_get_key_rx_seq(key, i, &seq);
568 /* wrapping isn't allowed, AP must rekey */
569 if (seq.tkip.iv32 > cur_rx_iv32)
570 cur_rx_iv32 = seq.tkip.iv32;
571 }
572
573 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
574 cur_rx_iv32, p1k);
575 iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k);
576 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
577 cur_rx_iv32 + 1, p1k);
578 iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k);
579
580 memcpy(rx_mic_key,
581 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
582 IWL_MIC_KEY_SIZE);
583
584 data->have_tkip_keys = true;
585 break;
586 }
587 }
588
589 struct wowlan_key_gtk_type_iter {
590 struct iwl_wowlan_kek_kck_material_cmd_v4 *kek_kck_cmd;
591 };
592
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)593 static void iwl_mvm_wowlan_gtk_type_iter(struct ieee80211_hw *hw,
594 struct ieee80211_vif *vif,
595 struct ieee80211_sta *sta,
596 struct ieee80211_key_conf *key,
597 void *_data)
598 {
599 struct wowlan_key_gtk_type_iter *data = _data;
600
601 switch (key->cipher) {
602 default:
603 return;
604 case WLAN_CIPHER_SUITE_TKIP:
605 if (!sta)
606 data->kek_kck_cmd->gtk_cipher =
607 cpu_to_le32(STA_KEY_FLG_TKIP);
608 return;
609 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
610 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
611 data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_GCMP);
612 return;
613 case WLAN_CIPHER_SUITE_AES_CMAC:
614 data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_CCM);
615 return;
616 case WLAN_CIPHER_SUITE_CCMP:
617 if (!sta)
618 data->kek_kck_cmd->gtk_cipher =
619 cpu_to_le32(STA_KEY_FLG_CCM);
620 return;
621 case WLAN_CIPHER_SUITE_GCMP:
622 case WLAN_CIPHER_SUITE_GCMP_256:
623 if (!sta)
624 data->kek_kck_cmd->gtk_cipher =
625 cpu_to_le32(STA_KEY_FLG_GCMP);
626 return;
627 }
628 }
629
iwl_mvm_send_patterns_v1(struct iwl_mvm * mvm,struct cfg80211_wowlan * wowlan)630 static int iwl_mvm_send_patterns_v1(struct iwl_mvm *mvm,
631 struct cfg80211_wowlan *wowlan)
632 {
633 struct iwl_wowlan_patterns_cmd_v1 *pattern_cmd;
634 struct iwl_host_cmd cmd = {
635 .id = WOWLAN_PATTERNS,
636 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
637 };
638 int i, err;
639
640 if (!wowlan->n_patterns)
641 return 0;
642
643 cmd.len[0] = struct_size(pattern_cmd, patterns, wowlan->n_patterns);
644
645 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
646 if (!pattern_cmd)
647 return -ENOMEM;
648
649 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
650
651 for (i = 0; i < wowlan->n_patterns; i++) {
652 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
653
654 memcpy(&pattern_cmd->patterns[i].mask,
655 wowlan->patterns[i].mask, mask_len);
656 memcpy(&pattern_cmd->patterns[i].pattern,
657 wowlan->patterns[i].pattern,
658 wowlan->patterns[i].pattern_len);
659 pattern_cmd->patterns[i].mask_size = mask_len;
660 pattern_cmd->patterns[i].pattern_size =
661 wowlan->patterns[i].pattern_len;
662 }
663
664 cmd.data[0] = pattern_cmd;
665 err = iwl_mvm_send_cmd(mvm, &cmd);
666 kfree(pattern_cmd);
667 return err;
668 }
669
iwl_mvm_send_patterns(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct cfg80211_wowlan * wowlan)670 static int iwl_mvm_send_patterns(struct iwl_mvm *mvm,
671 struct ieee80211_vif *vif,
672 struct cfg80211_wowlan *wowlan)
673 {
674 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
675 struct iwl_wowlan_patterns_cmd *pattern_cmd;
676 struct iwl_host_cmd cmd = {
677 .id = WOWLAN_PATTERNS,
678 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
679 };
680 int i, err;
681 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id,
682 IWL_FW_CMD_VER_UNKNOWN);
683
684 if (!wowlan->n_patterns)
685 return 0;
686
687 cmd.len[0] = sizeof(*pattern_cmd) +
688 wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern_v2);
689
690 pattern_cmd = kzalloc(cmd.len[0], GFP_KERNEL);
691 if (!pattern_cmd)
692 return -ENOMEM;
693
694 pattern_cmd->n_patterns = wowlan->n_patterns;
695 if (ver >= 3)
696 pattern_cmd->sta_id = mvmvif->deflink.ap_sta_id;
697
698 for (i = 0; i < wowlan->n_patterns; i++) {
699 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
700
701 pattern_cmd->patterns[i].pattern_type =
702 WOWLAN_PATTERN_TYPE_BITMASK;
703
704 memcpy(&pattern_cmd->patterns[i].u.bitmask.mask,
705 wowlan->patterns[i].mask, mask_len);
706 memcpy(&pattern_cmd->patterns[i].u.bitmask.pattern,
707 wowlan->patterns[i].pattern,
708 wowlan->patterns[i].pattern_len);
709 pattern_cmd->patterns[i].u.bitmask.mask_size = mask_len;
710 pattern_cmd->patterns[i].u.bitmask.pattern_size =
711 wowlan->patterns[i].pattern_len;
712 }
713
714 cmd.data[0] = pattern_cmd;
715 err = iwl_mvm_send_cmd(mvm, &cmd);
716 kfree(pattern_cmd);
717 return err;
718 }
719
iwl_mvm_d3_reprogram(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * ap_sta)720 static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
721 struct ieee80211_sta *ap_sta)
722 {
723 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
724 struct ieee80211_chanctx_conf *ctx;
725 u8 chains_static, chains_dynamic;
726 struct cfg80211_chan_def chandef;
727 int ret, i;
728 struct iwl_binding_cmd_v1 binding_cmd = {};
729 struct iwl_time_quota_cmd quota_cmd = {};
730 struct iwl_time_quota_data *quota;
731 u32 status;
732
733 if (WARN_ON_ONCE(iwl_mvm_is_cdb_supported(mvm)))
734 return -EINVAL;
735
736 /* add back the PHY */
737 if (WARN_ON(!mvmvif->deflink.phy_ctxt))
738 return -EINVAL;
739
740 rcu_read_lock();
741 ctx = rcu_dereference(vif->bss_conf.chanctx_conf);
742 if (WARN_ON(!ctx)) {
743 rcu_read_unlock();
744 return -EINVAL;
745 }
746 chandef = ctx->def;
747 chains_static = ctx->rx_chains_static;
748 chains_dynamic = ctx->rx_chains_dynamic;
749 rcu_read_unlock();
750
751 ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->deflink.phy_ctxt, &chandef,
752 chains_static, chains_dynamic);
753 if (ret)
754 return ret;
755
756 /* add back the MAC */
757 mvmvif->uploaded = false;
758
759 if (WARN_ON(!vif->cfg.assoc))
760 return -EINVAL;
761
762 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
763 if (ret)
764 return ret;
765
766 /* add back binding - XXX refactor? */
767 binding_cmd.id_and_color =
768 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id,
769 mvmvif->deflink.phy_ctxt->color));
770 binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD);
771 binding_cmd.phy =
772 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id,
773 mvmvif->deflink.phy_ctxt->color));
774 binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
775 mvmvif->color));
776 for (i = 1; i < MAX_MACS_IN_BINDING; i++)
777 binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID);
778
779 status = 0;
780 ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD,
781 IWL_BINDING_CMD_SIZE_V1, &binding_cmd,
782 &status);
783 if (ret) {
784 IWL_ERR(mvm, "Failed to add binding: %d\n", ret);
785 return ret;
786 }
787
788 if (status) {
789 IWL_ERR(mvm, "Binding command failed: %u\n", status);
790 return -EIO;
791 }
792
793 ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false, 0);
794 if (ret)
795 return ret;
796 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->deflink.ap_sta_id],
797 ap_sta);
798
799 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
800 if (ret)
801 return ret;
802
803 /* and some quota */
804 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, 0);
805 quota->id_and_color =
806 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id,
807 mvmvif->deflink.phy_ctxt->color));
808 quota->quota = cpu_to_le32(IWL_MVM_MAX_QUOTA);
809 quota->max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA);
810
811 for (i = 1; i < MAX_BINDINGS; i++) {
812 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, i);
813 quota->id_and_color = cpu_to_le32(FW_CTXT_INVALID);
814 }
815
816 ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0,
817 iwl_mvm_quota_cmd_size(mvm), "a_cmd);
818 if (ret)
819 IWL_ERR(mvm, "Failed to send quota: %d\n", ret);
820
821 if (iwl_mvm_is_lar_supported(mvm) && iwl_mvm_init_fw_regd(mvm))
822 IWL_ERR(mvm, "Failed to initialize D3 LAR information\n");
823
824 return 0;
825 }
826
iwl_mvm_get_last_nonqos_seq(struct iwl_mvm * mvm,struct ieee80211_vif * vif)827 static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm,
828 struct ieee80211_vif *vif)
829 {
830 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
831 struct iwl_nonqos_seq_query_cmd query_cmd = {
832 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET),
833 .mac_id_n_color =
834 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
835 mvmvif->color)),
836 };
837 struct iwl_host_cmd cmd = {
838 .id = NON_QOS_TX_COUNTER_CMD,
839 .flags = CMD_WANT_SKB,
840 };
841 int err;
842 u32 size;
843
844 cmd.data[0] = &query_cmd;
845 cmd.len[0] = sizeof(query_cmd);
846
847 err = iwl_mvm_send_cmd(mvm, &cmd);
848 if (err)
849 return err;
850
851 size = iwl_rx_packet_payload_len(cmd.resp_pkt);
852 if (size < sizeof(__le16)) {
853 err = -EINVAL;
854 } else {
855 err = le16_to_cpup((__le16 *)cmd.resp_pkt->data);
856 /* firmware returns next, not last-used seqno */
857 err = (u16) (err - 0x10);
858 }
859
860 iwl_free_resp(&cmd);
861 return err;
862 }
863
iwl_mvm_set_last_nonqos_seq(struct iwl_mvm * mvm,struct ieee80211_vif * vif)864 void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
865 {
866 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
867 struct iwl_nonqos_seq_query_cmd query_cmd = {
868 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET),
869 .mac_id_n_color =
870 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
871 mvmvif->color)),
872 .value = cpu_to_le16(mvmvif->seqno),
873 };
874
875 /* return if called during restart, not resume from D3 */
876 if (!mvmvif->seqno_valid)
877 return;
878
879 mvmvif->seqno_valid = false;
880
881 if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0,
882 sizeof(query_cmd), &query_cmd))
883 IWL_ERR(mvm, "failed to set non-QoS seqno\n");
884 }
885
iwl_mvm_switch_to_d3(struct iwl_mvm * mvm)886 static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm)
887 {
888 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
889
890 iwl_mvm_stop_device(mvm);
891 /*
892 * Set the HW restart bit -- this is mostly true as we're
893 * going to load new firmware and reprogram that, though
894 * the reprogramming is going to be manual to avoid adding
895 * all the MACs that aren't support.
896 * We don't have to clear up everything though because the
897 * reprogramming is manual. When we resume, we'll actually
898 * go through a proper restart sequence again to switch
899 * back to the runtime firmware image.
900 */
901 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
902
903 /* the fw is reset, so all the keys are cleared */
904 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
905
906 mvm->ptk_ivlen = 0;
907 mvm->ptk_icvlen = 0;
908 mvm->ptk_ivlen = 0;
909 mvm->ptk_icvlen = 0;
910
911 return iwl_mvm_load_d3_fw(mvm);
912 }
913
914 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)915 iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm,
916 struct cfg80211_wowlan *wowlan,
917 struct iwl_wowlan_config_cmd *wowlan_config_cmd,
918 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
919 struct ieee80211_sta *ap_sta)
920 {
921 struct iwl_mvm_sta *mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
922
923 /* TODO: wowlan_config_cmd->wowlan_ba_teardown_tids */
924
925 wowlan_config_cmd->is_11n_connection =
926 ap_sta->deflink.ht_cap.ht_supported;
927 wowlan_config_cmd->flags = ENABLE_L3_FILTERING |
928 ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING;
929
930 if (iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_CONFIGURATION, 0) < 6) {
931 /* Query the last used seqno and set it */
932 int ret = iwl_mvm_get_last_nonqos_seq(mvm, vif);
933
934 if (ret < 0)
935 return ret;
936
937 wowlan_config_cmd->non_qos_seq = cpu_to_le16(ret);
938 }
939
940 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, wowlan_config_cmd);
941
942 if (wowlan->disconnect)
943 wowlan_config_cmd->wakeup_filter |=
944 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
945 IWL_WOWLAN_WAKEUP_LINK_CHANGE);
946 if (wowlan->magic_pkt)
947 wowlan_config_cmd->wakeup_filter |=
948 cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET);
949 if (wowlan->gtk_rekey_failure)
950 wowlan_config_cmd->wakeup_filter |=
951 cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
952 if (wowlan->eap_identity_req)
953 wowlan_config_cmd->wakeup_filter |=
954 cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ);
955 if (wowlan->four_way_handshake)
956 wowlan_config_cmd->wakeup_filter |=
957 cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
958 if (wowlan->n_patterns)
959 wowlan_config_cmd->wakeup_filter |=
960 cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH);
961
962 if (wowlan->rfkill_release)
963 wowlan_config_cmd->wakeup_filter |=
964 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
965
966 if (wowlan->tcp) {
967 /*
968 * Set the "link change" (really "link lost") flag as well
969 * since that implies losing the TCP connection.
970 */
971 wowlan_config_cmd->wakeup_filter |=
972 cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS |
973 IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE |
974 IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET |
975 IWL_WOWLAN_WAKEUP_LINK_CHANGE);
976 }
977
978 if (wowlan->any) {
979 wowlan_config_cmd->wakeup_filter |=
980 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
981 IWL_WOWLAN_WAKEUP_LINK_CHANGE |
982 IWL_WOWLAN_WAKEUP_RX_FRAME |
983 IWL_WOWLAN_WAKEUP_BCN_FILTERING);
984 }
985
986 return 0;
987 }
988
iwl_mvm_wowlan_config_key_params(struct iwl_mvm * mvm,struct ieee80211_vif * vif)989 static int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm,
990 struct ieee80211_vif *vif)
991 {
992 bool unified = fw_has_capa(&mvm->fw->ucode_capa,
993 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
994 struct wowlan_key_reprogram_data key_data = {};
995 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
996 int ret;
997 u8 cmd_ver;
998 size_t cmd_size;
999
1000 if (!unified) {
1001 /*
1002 * if we have to configure keys, call ieee80211_iter_keys(),
1003 * as we need non-atomic context in order to take the
1004 * required locks.
1005 */
1006 /*
1007 * Note that currently we don't use CMD_ASYNC in the iterator.
1008 * In case of key_data.configure_keys, all the configured
1009 * commands are SYNC, and iwl_mvm_wowlan_program_keys() will
1010 * take care of locking/unlocking mvm->mutex.
1011 */
1012 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_program_keys,
1013 &key_data);
1014
1015 if (key_data.error)
1016 return -EIO;
1017 }
1018
1019 ret = iwl_mvm_wowlan_config_rsc_tsc(mvm, vif);
1020 if (ret)
1021 return ret;
1022
1023 if (!fw_has_api(&mvm->fw->ucode_capa,
1024 IWL_UCODE_TLV_API_TKIP_MIC_KEYS)) {
1025 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TKIP_PARAM,
1026 IWL_FW_CMD_VER_UNKNOWN);
1027 struct wowlan_key_tkip_data tkip_data = {};
1028 int size;
1029
1030 if (ver == 2) {
1031 size = sizeof(tkip_data.tkip);
1032 tkip_data.tkip.sta_id =
1033 cpu_to_le32(mvmvif->deflink.ap_sta_id);
1034 } else if (ver == 1 || ver == IWL_FW_CMD_VER_UNKNOWN) {
1035 size = sizeof(struct iwl_wowlan_tkip_params_cmd_ver_1);
1036 } else {
1037 WARN_ON_ONCE(1);
1038 return -EINVAL;
1039 }
1040
1041 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_get_tkip_data,
1042 &tkip_data);
1043
1044 if (tkip_data.have_tkip_keys) {
1045 /* send relevant data according to CMD version */
1046 ret = iwl_mvm_send_cmd_pdu(mvm,
1047 WOWLAN_TKIP_PARAM,
1048 CMD_ASYNC, size,
1049 &tkip_data.tkip);
1050 if (ret)
1051 return ret;
1052 }
1053 }
1054
1055 /* configure rekey data only if offloaded rekey is supported (d3) */
1056 if (mvmvif->rekey_data.valid) {
1057 struct iwl_wowlan_kek_kck_material_cmd_v4 kek_kck_cmd = {};
1058 struct iwl_wowlan_kek_kck_material_cmd_v4 *_kek_kck_cmd =
1059 &kek_kck_cmd;
1060 struct wowlan_key_gtk_type_iter gtk_type_data = {
1061 .kek_kck_cmd = _kek_kck_cmd,
1062 };
1063
1064 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,
1065 WOWLAN_KEK_KCK_MATERIAL,
1066 IWL_FW_CMD_VER_UNKNOWN);
1067 if (WARN_ON(cmd_ver != 2 && cmd_ver != 3 && cmd_ver != 4 &&
1068 cmd_ver != IWL_FW_CMD_VER_UNKNOWN))
1069 return -EINVAL;
1070
1071 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_gtk_type_iter,
1072 >k_type_data);
1073
1074 memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck,
1075 mvmvif->rekey_data.kck_len);
1076 kek_kck_cmd.kck_len = cpu_to_le16(mvmvif->rekey_data.kck_len);
1077 memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek,
1078 mvmvif->rekey_data.kek_len);
1079 kek_kck_cmd.kek_len = cpu_to_le16(mvmvif->rekey_data.kek_len);
1080 kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr;
1081 kek_kck_cmd.akm = cpu_to_le32(mvmvif->rekey_data.akm);
1082 kek_kck_cmd.sta_id = cpu_to_le32(mvmvif->deflink.ap_sta_id);
1083
1084 if (cmd_ver == 4) {
1085 cmd_size = sizeof(struct iwl_wowlan_kek_kck_material_cmd_v4);
1086 } else {
1087 if (cmd_ver == 3)
1088 cmd_size =
1089 sizeof(struct iwl_wowlan_kek_kck_material_cmd_v3);
1090 else
1091 cmd_size =
1092 sizeof(struct iwl_wowlan_kek_kck_material_cmd_v2);
1093 /* skip the sta_id at the beginning */
1094 _kek_kck_cmd = (void *)
1095 ((u8 *)_kek_kck_cmd + sizeof(kek_kck_cmd.sta_id));
1096 }
1097
1098 IWL_DEBUG_WOWLAN(mvm, "setting akm %d\n",
1099 mvmvif->rekey_data.akm);
1100
1101 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_KEK_KCK_MATERIAL,
1102 CMD_ASYNC, cmd_size, _kek_kck_cmd);
1103 if (ret)
1104 return ret;
1105 }
1106
1107 return 0;
1108 }
1109
1110 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)1111 iwl_mvm_wowlan_config(struct iwl_mvm *mvm,
1112 struct cfg80211_wowlan *wowlan,
1113 struct iwl_wowlan_config_cmd *wowlan_config_cmd,
1114 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
1115 struct ieee80211_sta *ap_sta)
1116 {
1117 int ret;
1118 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1119 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1120
1121 mvm->offload_tid = wowlan_config_cmd->offloading_tid;
1122
1123 if (!unified_image) {
1124 ret = iwl_mvm_switch_to_d3(mvm);
1125 if (ret)
1126 return ret;
1127
1128 ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta);
1129 if (ret)
1130 return ret;
1131 }
1132
1133 /*
1134 * This needs to be unlocked due to lock ordering
1135 * constraints. Since we're in the suspend path
1136 * that isn't really a problem though.
1137 */
1138 mutex_unlock(&mvm->mutex);
1139 ret = iwl_mvm_wowlan_config_key_params(mvm, vif);
1140 mutex_lock(&mvm->mutex);
1141 if (ret)
1142 return ret;
1143
1144 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0,
1145 sizeof(*wowlan_config_cmd),
1146 wowlan_config_cmd);
1147 if (ret)
1148 return ret;
1149
1150 if (fw_has_api(&mvm->fw->ucode_capa,
1151 IWL_UCODE_TLV_API_WOWLAN_TCP_SYN_WAKE))
1152 ret = iwl_mvm_send_patterns(mvm, vif, wowlan);
1153 else
1154 ret = iwl_mvm_send_patterns_v1(mvm, wowlan);
1155 if (ret)
1156 return ret;
1157
1158 return iwl_mvm_send_proto_offload(mvm, vif, false, true, 0);
1159 }
1160
1161 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)1162 iwl_mvm_netdetect_config(struct iwl_mvm *mvm,
1163 struct cfg80211_wowlan *wowlan,
1164 struct cfg80211_sched_scan_request *nd_config,
1165 struct ieee80211_vif *vif)
1166 {
1167 int ret;
1168 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1169 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1170
1171 if (!unified_image) {
1172 ret = iwl_mvm_switch_to_d3(mvm);
1173 if (ret)
1174 return ret;
1175 } else {
1176 /* In theory, we wouldn't have to stop a running sched
1177 * scan in order to start another one (for
1178 * net-detect). But in practice this doesn't seem to
1179 * work properly, so stop any running sched_scan now.
1180 */
1181 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
1182 if (ret)
1183 return ret;
1184 }
1185
1186 ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies,
1187 IWL_MVM_SCAN_NETDETECT);
1188 if (ret)
1189 return ret;
1190
1191 if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels))
1192 return -EBUSY;
1193
1194 /* save the sched scan matchsets... */
1195 if (nd_config->n_match_sets) {
1196 mvm->nd_match_sets = kmemdup(nd_config->match_sets,
1197 sizeof(*nd_config->match_sets) *
1198 nd_config->n_match_sets,
1199 GFP_KERNEL);
1200 if (mvm->nd_match_sets)
1201 mvm->n_nd_match_sets = nd_config->n_match_sets;
1202 }
1203
1204 /* ...and the sched scan channels for later reporting */
1205 mvm->nd_channels = kmemdup(nd_config->channels,
1206 sizeof(*nd_config->channels) *
1207 nd_config->n_channels,
1208 GFP_KERNEL);
1209 if (mvm->nd_channels)
1210 mvm->n_nd_channels = nd_config->n_channels;
1211
1212 return 0;
1213 }
1214
iwl_mvm_free_nd(struct iwl_mvm * mvm)1215 static void iwl_mvm_free_nd(struct iwl_mvm *mvm)
1216 {
1217 kfree(mvm->nd_match_sets);
1218 mvm->nd_match_sets = NULL;
1219 mvm->n_nd_match_sets = 0;
1220 kfree(mvm->nd_channels);
1221 mvm->nd_channels = NULL;
1222 mvm->n_nd_channels = 0;
1223 }
1224
__iwl_mvm_suspend(struct ieee80211_hw * hw,struct cfg80211_wowlan * wowlan,bool test)1225 static int __iwl_mvm_suspend(struct ieee80211_hw *hw,
1226 struct cfg80211_wowlan *wowlan,
1227 bool test)
1228 {
1229 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1230 struct ieee80211_vif *vif = NULL;
1231 struct iwl_mvm_vif *mvmvif = NULL;
1232 struct ieee80211_sta *ap_sta = NULL;
1233 struct iwl_d3_manager_config d3_cfg_cmd_data = {
1234 /*
1235 * Program the minimum sleep time to 10 seconds, as many
1236 * platforms have issues processing a wakeup signal while
1237 * still being in the process of suspending.
1238 */
1239 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000),
1240 };
1241 struct iwl_host_cmd d3_cfg_cmd = {
1242 .id = D3_CONFIG_CMD,
1243 .flags = CMD_WANT_SKB | CMD_SEND_IN_D3,
1244 .data[0] = &d3_cfg_cmd_data,
1245 .len[0] = sizeof(d3_cfg_cmd_data),
1246 };
1247 int ret;
1248 int len __maybe_unused;
1249 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1250 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1251
1252 if (!wowlan) {
1253 /*
1254 * mac80211 shouldn't get here, but for D3 test
1255 * it doesn't warrant a warning
1256 */
1257 WARN_ON(!test);
1258 return -EINVAL;
1259 }
1260
1261 mutex_lock(&mvm->mutex);
1262
1263 set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
1264
1265 synchronize_net();
1266
1267 vif = iwl_mvm_get_bss_vif(mvm);
1268 if (IS_ERR_OR_NULL(vif)) {
1269 ret = 1;
1270 goto out_noreset;
1271 }
1272
1273 mvmvif = iwl_mvm_vif_from_mac80211(vif);
1274
1275 if (mvmvif->deflink.ap_sta_id == IWL_MVM_INVALID_STA) {
1276 /* if we're not associated, this must be netdetect */
1277 if (!wowlan->nd_config) {
1278 ret = 1;
1279 goto out_noreset;
1280 }
1281
1282 ret = iwl_mvm_netdetect_config(
1283 mvm, wowlan, wowlan->nd_config, vif);
1284 if (ret)
1285 goto out;
1286
1287 mvm->net_detect = true;
1288 } else {
1289 struct iwl_wowlan_config_cmd wowlan_config_cmd = {};
1290
1291 wowlan_config_cmd.sta_id = mvmvif->deflink.ap_sta_id;
1292
1293 ap_sta = rcu_dereference_protected(
1294 mvm->fw_id_to_mac_id[mvmvif->deflink.ap_sta_id],
1295 lockdep_is_held(&mvm->mutex));
1296 if (IS_ERR_OR_NULL(ap_sta)) {
1297 ret = -EINVAL;
1298 goto out_noreset;
1299 }
1300
1301 ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1302 vif, mvmvif, ap_sta);
1303 if (ret)
1304 goto out_noreset;
1305 ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1306 vif, mvmvif, ap_sta);
1307 if (ret)
1308 goto out;
1309
1310 mvm->net_detect = false;
1311 }
1312
1313 ret = iwl_mvm_power_update_device(mvm);
1314 if (ret)
1315 goto out;
1316
1317 ret = iwl_mvm_power_update_mac(mvm);
1318 if (ret)
1319 goto out;
1320
1321 #ifdef CONFIG_IWLWIFI_DEBUGFS
1322 if (mvm->d3_wake_sysassert)
1323 d3_cfg_cmd_data.wakeup_flags |=
1324 cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR);
1325 #endif
1326
1327 /*
1328 * Prior to 9000 device family the driver needs to stop the dbg
1329 * recording before entering D3. In later devices the FW stops the
1330 * recording automatically.
1331 */
1332 if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_9000)
1333 iwl_fw_dbg_stop_restart_recording(&mvm->fwrt, NULL, true);
1334
1335 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_D3;
1336
1337 /* must be last -- this switches firmware state */
1338 ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd);
1339 if (ret)
1340 goto out;
1341 #ifdef CONFIG_IWLWIFI_DEBUGFS
1342 len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt);
1343 if (len >= sizeof(u32)) {
1344 mvm->d3_test_pme_ptr =
1345 le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data);
1346 }
1347 #endif
1348 iwl_free_resp(&d3_cfg_cmd);
1349
1350 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1351
1352 ret = iwl_trans_d3_suspend(mvm->trans, test, !unified_image);
1353 out:
1354 if (ret < 0) {
1355 iwl_mvm_free_nd(mvm);
1356
1357 if (!unified_image) {
1358 if (mvm->fw_restart > 0) {
1359 mvm->fw_restart--;
1360 ieee80211_restart_hw(mvm->hw);
1361 }
1362 }
1363
1364 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
1365 }
1366 out_noreset:
1367 mutex_unlock(&mvm->mutex);
1368
1369 return ret;
1370 }
1371
iwl_mvm_suspend(struct ieee80211_hw * hw,struct cfg80211_wowlan * wowlan)1372 int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
1373 {
1374 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1375
1376 iwl_mvm_pause_tcm(mvm, true);
1377
1378 iwl_fw_runtime_suspend(&mvm->fwrt);
1379
1380 return __iwl_mvm_suspend(hw, wowlan, false);
1381 }
1382
1383 struct iwl_multicast_key_data {
1384 u8 key[WOWLAN_KEY_MAX_SIZE];
1385 u8 len;
1386 u8 flags;
1387 u8 id;
1388 u8 ipn[6];
1389 };
1390
1391 /* converted data from the different status responses */
1392 struct iwl_wowlan_status_data {
1393 u64 replay_ctr;
1394 u32 num_of_gtk_rekeys;
1395 u32 received_beacons;
1396 u32 wakeup_reasons;
1397 u32 wake_packet_length;
1398 u32 wake_packet_bufsize;
1399 u16 pattern_number;
1400 u16 non_qos_seq_ctr;
1401 u16 qos_seq_ctr[8];
1402 u8 tid_tear_down;
1403
1404 struct {
1405 /* including RX MIC key for TKIP */
1406 u8 key[WOWLAN_KEY_MAX_SIZE];
1407 u8 len;
1408 u8 flags;
1409 u8 id;
1410 } gtk[WOWLAN_GTK_KEYS_NUM];
1411
1412 struct {
1413 /*
1414 * We store both the TKIP and AES representations
1415 * coming from the firmware because we decode the
1416 * data from there before we iterate the keys and
1417 * know which one we need.
1418 */
1419 struct {
1420 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT];
1421 } tkip, aes;
1422
1423 /*
1424 * We use -1 for when we have valid data but don't know
1425 * the key ID from firmware, and thus it needs to be
1426 * installed with the last key (depending on rekeying).
1427 */
1428 s8 key_id;
1429 bool valid;
1430 } gtk_seq[2];
1431
1432 struct {
1433 /* Same as above */
1434 struct {
1435 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT];
1436 u64 tx_pn;
1437 } tkip, aes;
1438 } ptk;
1439
1440 struct iwl_multicast_key_data igtk;
1441
1442 u8 *wake_packet;
1443 };
1444
iwl_mvm_report_wakeup_reasons(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_wowlan_status_data * status)1445 static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm,
1446 struct ieee80211_vif *vif,
1447 struct iwl_wowlan_status_data *status)
1448 {
1449 struct sk_buff *pkt = NULL;
1450 struct cfg80211_wowlan_wakeup wakeup = {
1451 .pattern_idx = -1,
1452 };
1453 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
1454 u32 reasons = status->wakeup_reasons;
1455
1456 if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
1457 wakeup_report = NULL;
1458 goto report;
1459 }
1460
1461 pm_wakeup_event(mvm->dev, 0);
1462
1463 if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET)
1464 wakeup.magic_pkt = true;
1465
1466 if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN)
1467 wakeup.pattern_idx =
1468 status->pattern_number;
1469
1470 if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1471 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH))
1472 wakeup.disconnect = true;
1473
1474 if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)
1475 wakeup.gtk_rekey_failure = true;
1476
1477 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
1478 wakeup.rfkill_release = true;
1479
1480 if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST)
1481 wakeup.eap_identity_req = true;
1482
1483 if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE)
1484 wakeup.four_way_handshake = true;
1485
1486 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS)
1487 wakeup.tcp_connlost = true;
1488
1489 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE)
1490 wakeup.tcp_nomoretokens = true;
1491
1492 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET)
1493 wakeup.tcp_match = true;
1494
1495 if (status->wake_packet) {
1496 int pktsize = status->wake_packet_bufsize;
1497 int pktlen = status->wake_packet_length;
1498 const u8 *pktdata = status->wake_packet;
1499 const struct ieee80211_hdr *hdr = (const void *)pktdata;
1500 int truncated = pktlen - pktsize;
1501
1502 /* this would be a firmware bug */
1503 if (WARN_ON_ONCE(truncated < 0))
1504 truncated = 0;
1505
1506 if (ieee80211_is_data(hdr->frame_control)) {
1507 int hdrlen = ieee80211_hdrlen(hdr->frame_control);
1508 int ivlen = 0, icvlen = 4; /* also FCS */
1509
1510 pkt = alloc_skb(pktsize, GFP_KERNEL);
1511 if (!pkt)
1512 goto report;
1513
1514 skb_put_data(pkt, pktdata, hdrlen);
1515 pktdata += hdrlen;
1516 pktsize -= hdrlen;
1517
1518 if (ieee80211_has_protected(hdr->frame_control)) {
1519 /*
1520 * This is unlocked and using gtk_i(c)vlen,
1521 * but since everything is under RTNL still
1522 * that's not really a problem - changing
1523 * it would be difficult.
1524 */
1525 if (is_multicast_ether_addr(hdr->addr1)) {
1526 ivlen = mvm->gtk_ivlen;
1527 icvlen += mvm->gtk_icvlen;
1528 } else {
1529 ivlen = mvm->ptk_ivlen;
1530 icvlen += mvm->ptk_icvlen;
1531 }
1532 }
1533
1534 /* if truncated, FCS/ICV is (partially) gone */
1535 if (truncated >= icvlen) {
1536 icvlen = 0;
1537 truncated -= icvlen;
1538 } else {
1539 icvlen -= truncated;
1540 truncated = 0;
1541 }
1542
1543 pktsize -= ivlen + icvlen;
1544 pktdata += ivlen;
1545
1546 skb_put_data(pkt, pktdata, pktsize);
1547
1548 if (ieee80211_data_to_8023(pkt, vif->addr, vif->type))
1549 goto report;
1550 wakeup.packet = pkt->data;
1551 wakeup.packet_present_len = pkt->len;
1552 wakeup.packet_len = pkt->len - truncated;
1553 wakeup.packet_80211 = false;
1554 } else {
1555 int fcslen = 4;
1556
1557 if (truncated >= 4) {
1558 truncated -= 4;
1559 fcslen = 0;
1560 } else {
1561 fcslen -= truncated;
1562 truncated = 0;
1563 }
1564 pktsize -= fcslen;
1565 wakeup.packet = status->wake_packet;
1566 wakeup.packet_present_len = pktsize;
1567 wakeup.packet_len = pktlen - truncated;
1568 wakeup.packet_80211 = true;
1569 }
1570 }
1571
1572 report:
1573 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
1574 kfree_skb(pkt);
1575 }
1576
iwl_mvm_le64_to_aes_seq(__le64 le_pn,struct ieee80211_key_seq * seq)1577 static void iwl_mvm_le64_to_aes_seq(__le64 le_pn, struct ieee80211_key_seq *seq)
1578 {
1579 u64 pn = le64_to_cpu(le_pn);
1580
1581 seq->ccmp.pn[0] = pn >> 40;
1582 seq->ccmp.pn[1] = pn >> 32;
1583 seq->ccmp.pn[2] = pn >> 24;
1584 seq->ccmp.pn[3] = pn >> 16;
1585 seq->ccmp.pn[4] = pn >> 8;
1586 seq->ccmp.pn[5] = pn;
1587 }
1588
iwl_mvm_aes_sc_to_seq(struct aes_sc * sc,struct ieee80211_key_seq * seq)1589 static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc,
1590 struct ieee80211_key_seq *seq)
1591 {
1592 iwl_mvm_le64_to_aes_seq(sc->pn, seq);
1593 }
1594
iwl_mvm_le64_to_tkip_seq(__le64 le_pn,struct ieee80211_key_seq * seq)1595 static void iwl_mvm_le64_to_tkip_seq(__le64 le_pn, struct ieee80211_key_seq *seq)
1596 {
1597 u64 pn = le64_to_cpu(le_pn);
1598
1599 seq->tkip.iv16 = (u16)pn;
1600 seq->tkip.iv32 = (u32)(pn >> 16);
1601 }
1602
iwl_mvm_tkip_sc_to_seq(struct tkip_sc * sc,struct ieee80211_key_seq * seq)1603 static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc,
1604 struct ieee80211_key_seq *seq)
1605 {
1606 seq->tkip.iv32 = le32_to_cpu(sc->iv32);
1607 seq->tkip.iv16 = le16_to_cpu(sc->iv16);
1608 }
1609
iwl_mvm_set_key_rx_seq_tids(struct ieee80211_key_conf * key,struct ieee80211_key_seq * seq)1610 static void iwl_mvm_set_key_rx_seq_tids(struct ieee80211_key_conf *key,
1611 struct ieee80211_key_seq *seq)
1612 {
1613 int tid;
1614
1615 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++)
1616 ieee80211_set_key_rx_seq(key, tid, &seq[tid]);
1617 }
1618
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)1619 static void iwl_mvm_set_aes_ptk_rx_seq(struct iwl_mvm *mvm,
1620 struct iwl_wowlan_status_data *status,
1621 struct ieee80211_sta *sta,
1622 struct ieee80211_key_conf *key)
1623 {
1624 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1625 struct iwl_mvm_key_pn *ptk_pn;
1626 int tid;
1627
1628 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.aes.seq);
1629
1630 if (!iwl_mvm_has_new_rx_api(mvm))
1631 return;
1632
1633
1634 rcu_read_lock();
1635 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]);
1636 if (WARN_ON(!ptk_pn)) {
1637 rcu_read_unlock();
1638 return;
1639 }
1640
1641 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1642 int i;
1643
1644 for (i = 1; i < mvm->trans->num_rx_queues; i++)
1645 memcpy(ptk_pn->q[i].pn[tid],
1646 status->ptk.aes.seq[tid].ccmp.pn,
1647 IEEE80211_CCMP_PN_LEN);
1648 }
1649 rcu_read_unlock();
1650 }
1651
iwl_mvm_convert_key_counters(struct iwl_wowlan_status_data * status,union iwl_all_tsc_rsc * sc)1652 static void iwl_mvm_convert_key_counters(struct iwl_wowlan_status_data *status,
1653 union iwl_all_tsc_rsc *sc)
1654 {
1655 int i;
1656
1657 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT);
1658 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC);
1659
1660 /* GTK RX counters */
1661 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1662 iwl_mvm_tkip_sc_to_seq(&sc->tkip.multicast_rsc[i],
1663 &status->gtk_seq[0].tkip.seq[i]);
1664 iwl_mvm_aes_sc_to_seq(&sc->aes.multicast_rsc[i],
1665 &status->gtk_seq[0].aes.seq[i]);
1666 }
1667 status->gtk_seq[0].valid = true;
1668 status->gtk_seq[0].key_id = -1;
1669
1670 /* PTK TX counter */
1671 status->ptk.tkip.tx_pn = (u64)le16_to_cpu(sc->tkip.tsc.iv16) |
1672 ((u64)le32_to_cpu(sc->tkip.tsc.iv32) << 16);
1673 status->ptk.aes.tx_pn = le64_to_cpu(sc->aes.tsc.pn);
1674
1675 /* PTK RX counters */
1676 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1677 iwl_mvm_tkip_sc_to_seq(&sc->tkip.unicast_rsc[i],
1678 &status->ptk.tkip.seq[i]);
1679 iwl_mvm_aes_sc_to_seq(&sc->aes.unicast_rsc[i],
1680 &status->ptk.aes.seq[i]);
1681 }
1682 }
1683
1684 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)1685 iwl_mvm_convert_key_counters_v5_gtk_seq(struct iwl_wowlan_status_data *status,
1686 struct iwl_wowlan_all_rsc_tsc_v5 *sc,
1687 unsigned int idx, unsigned int key_id)
1688 {
1689 int tid;
1690
1691 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1692 iwl_mvm_le64_to_tkip_seq(sc->mcast_rsc[idx][tid],
1693 &status->gtk_seq[idx].tkip.seq[tid]);
1694 iwl_mvm_le64_to_aes_seq(sc->mcast_rsc[idx][tid],
1695 &status->gtk_seq[idx].aes.seq[tid]);
1696 }
1697
1698 status->gtk_seq[idx].valid = true;
1699 status->gtk_seq[idx].key_id = key_id;
1700 }
1701
1702 static void
iwl_mvm_convert_key_counters_v5(struct iwl_wowlan_status_data * status,struct iwl_wowlan_all_rsc_tsc_v5 * sc)1703 iwl_mvm_convert_key_counters_v5(struct iwl_wowlan_status_data *status,
1704 struct iwl_wowlan_all_rsc_tsc_v5 *sc)
1705 {
1706 int i, tid;
1707
1708 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT);
1709 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC);
1710 BUILD_BUG_ON(ARRAY_SIZE(sc->mcast_rsc) != ARRAY_SIZE(status->gtk_seq));
1711
1712 /* GTK RX counters */
1713 for (i = 0; i < ARRAY_SIZE(sc->mcast_key_id_map); i++) {
1714 u8 entry = sc->mcast_key_id_map[i];
1715
1716 if (entry < ARRAY_SIZE(sc->mcast_rsc))
1717 iwl_mvm_convert_key_counters_v5_gtk_seq(status, sc,
1718 entry, i);
1719 }
1720
1721 /* PTK TX counters not needed, assigned in device */
1722
1723 /* PTK RX counters */
1724 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1725 iwl_mvm_le64_to_tkip_seq(sc->ucast_rsc[tid],
1726 &status->ptk.tkip.seq[tid]);
1727 iwl_mvm_le64_to_aes_seq(sc->ucast_rsc[tid],
1728 &status->ptk.aes.seq[tid]);
1729 }
1730 }
1731
iwl_mvm_set_key_rx_seq_idx(struct ieee80211_key_conf * key,struct iwl_wowlan_status_data * status,int idx)1732 static void iwl_mvm_set_key_rx_seq_idx(struct ieee80211_key_conf *key,
1733 struct iwl_wowlan_status_data *status,
1734 int idx)
1735 {
1736 switch (key->cipher) {
1737 case WLAN_CIPHER_SUITE_CCMP:
1738 case WLAN_CIPHER_SUITE_GCMP:
1739 case WLAN_CIPHER_SUITE_GCMP_256:
1740 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].aes.seq);
1741 break;
1742 case WLAN_CIPHER_SUITE_TKIP:
1743 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].tkip.seq);
1744 break;
1745 default:
1746 WARN_ON(1);
1747 }
1748 }
1749
iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf * key,struct iwl_wowlan_status_data * status,bool installed)1750 static void iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf *key,
1751 struct iwl_wowlan_status_data *status,
1752 bool installed)
1753 {
1754 int i;
1755
1756 for (i = 0; i < ARRAY_SIZE(status->gtk_seq); i++) {
1757 if (!status->gtk_seq[i].valid)
1758 continue;
1759
1760 /* Handle the case where we know the key ID */
1761 if (status->gtk_seq[i].key_id == key->keyidx) {
1762 s8 new_key_id = -1;
1763
1764 if (status->num_of_gtk_rekeys)
1765 new_key_id = status->gtk[0].flags &
1766 IWL_WOWLAN_GTK_IDX_MASK;
1767
1768 /* Don't install a new key's value to an old key */
1769 if (new_key_id != key->keyidx)
1770 iwl_mvm_set_key_rx_seq_idx(key, status, i);
1771 continue;
1772 }
1773
1774 /* handle the case where we didn't, last key only */
1775 if (status->gtk_seq[i].key_id == -1 &&
1776 (!status->num_of_gtk_rekeys || installed))
1777 iwl_mvm_set_key_rx_seq_idx(key, status, i);
1778 }
1779 }
1780
1781 struct iwl_mvm_d3_gtk_iter_data {
1782 struct iwl_mvm *mvm;
1783 struct iwl_wowlan_status_data *status;
1784 u32 gtk_cipher, igtk_cipher;
1785 bool unhandled_cipher, igtk_support;
1786 int num_keys;
1787 };
1788
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)1789 static void iwl_mvm_d3_find_last_keys(struct ieee80211_hw *hw,
1790 struct ieee80211_vif *vif,
1791 struct ieee80211_sta *sta,
1792 struct ieee80211_key_conf *key,
1793 void *_data)
1794 {
1795 struct iwl_mvm_d3_gtk_iter_data *data = _data;
1796
1797 if (data->unhandled_cipher)
1798 return;
1799
1800 switch (key->cipher) {
1801 case WLAN_CIPHER_SUITE_WEP40:
1802 case WLAN_CIPHER_SUITE_WEP104:
1803 /* ignore WEP completely, nothing to do */
1804 return;
1805 case WLAN_CIPHER_SUITE_CCMP:
1806 case WLAN_CIPHER_SUITE_GCMP:
1807 case WLAN_CIPHER_SUITE_GCMP_256:
1808 case WLAN_CIPHER_SUITE_TKIP:
1809 /* we support these */
1810 data->gtk_cipher = key->cipher;
1811 break;
1812 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
1813 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
1814 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
1815 case WLAN_CIPHER_SUITE_AES_CMAC:
1816 /* we support these */
1817 if (data->igtk_support &&
1818 (key->keyidx == 4 || key->keyidx == 5)) {
1819 data->igtk_cipher = key->cipher;
1820 } else {
1821 data->unhandled_cipher = true;
1822 return;
1823 }
1824 break;
1825 default:
1826 /* everything else - disconnect from AP */
1827 data->unhandled_cipher = true;
1828 return;
1829 }
1830
1831 data->num_keys++;
1832 }
1833
1834 static void
iwl_mvm_d3_set_igtk_bigtk_ipn(const struct iwl_multicast_key_data * key,struct ieee80211_key_seq * seq,u32 cipher)1835 iwl_mvm_d3_set_igtk_bigtk_ipn(const struct iwl_multicast_key_data *key,
1836 struct ieee80211_key_seq *seq, u32 cipher)
1837 {
1838 switch (cipher) {
1839 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
1840 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
1841 BUILD_BUG_ON(sizeof(seq->aes_gmac.pn) != sizeof(key->ipn));
1842 memcpy(seq->aes_gmac.pn, key->ipn, sizeof(seq->aes_gmac.pn));
1843 break;
1844 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
1845 BUILD_BUG_ON(sizeof(seq->aes_cmac.pn) != sizeof(key->ipn));
1846 memcpy(seq->aes_cmac.pn, key->ipn, sizeof(seq->aes_cmac.pn));
1847 break;
1848 }
1849 }
1850
iwl_mvm_d3_update_keys(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key,void * _data)1851 static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw,
1852 struct ieee80211_vif *vif,
1853 struct ieee80211_sta *sta,
1854 struct ieee80211_key_conf *key,
1855 void *_data)
1856 {
1857 struct iwl_mvm_d3_gtk_iter_data *data = _data;
1858 struct iwl_wowlan_status_data *status = data->status;
1859 s8 keyidx;
1860
1861 if (data->unhandled_cipher)
1862 return;
1863
1864 switch (key->cipher) {
1865 case WLAN_CIPHER_SUITE_WEP40:
1866 case WLAN_CIPHER_SUITE_WEP104:
1867 /* ignore WEP completely, nothing to do */
1868 return;
1869 case WLAN_CIPHER_SUITE_CCMP:
1870 case WLAN_CIPHER_SUITE_GCMP:
1871 case WLAN_CIPHER_SUITE_GCMP_256:
1872 if (sta) {
1873 atomic64_set(&key->tx_pn, status->ptk.aes.tx_pn);
1874 iwl_mvm_set_aes_ptk_rx_seq(data->mvm, status, sta, key);
1875 return;
1876 }
1877 fallthrough;
1878 case WLAN_CIPHER_SUITE_TKIP:
1879 if (sta) {
1880 atomic64_set(&key->tx_pn, status->ptk.tkip.tx_pn);
1881 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.tkip.seq);
1882 return;
1883 }
1884 keyidx = key->keyidx;
1885 /* The current key is always sent by the FW, even if it wasn't
1886 * rekeyed during D3.
1887 * We remove an existing key if it has the same index as
1888 * a new key
1889 */
1890 if (status->num_of_gtk_rekeys &&
1891 ((status->gtk[0].len && keyidx == status->gtk[0].id) ||
1892 (status->gtk[1].len && keyidx == status->gtk[1].id))) {
1893 ieee80211_remove_key(key);
1894 } else {
1895 iwl_mvm_set_key_rx_seq(key, data->status, false);
1896 }
1897 break;
1898 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
1899 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
1900 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
1901 case WLAN_CIPHER_SUITE_AES_CMAC:
1902 if (key->keyidx == 4 || key->keyidx == 5) {
1903 /* remove rekeyed key */
1904 if (status->num_of_gtk_rekeys) {
1905 ieee80211_remove_key(key);
1906 } else {
1907 struct ieee80211_key_seq seq;
1908
1909 iwl_mvm_d3_set_igtk_bigtk_ipn(&status->igtk,
1910 &seq,
1911 key->cipher);
1912 ieee80211_set_key_rx_seq(key, 0, &seq);
1913 }
1914 }
1915 }
1916 }
1917
iwl_mvm_gtk_rekey(struct iwl_wowlan_status_data * status,struct ieee80211_vif * vif,struct iwl_mvm * mvm,u32 gtk_cipher)1918 static bool iwl_mvm_gtk_rekey(struct iwl_wowlan_status_data *status,
1919 struct ieee80211_vif *vif,
1920 struct iwl_mvm *mvm, u32 gtk_cipher)
1921 {
1922 int i;
1923 struct ieee80211_key_conf *key;
1924 struct {
1925 struct ieee80211_key_conf conf;
1926 u8 key[32];
1927 } conf = {
1928 .conf.cipher = gtk_cipher,
1929 };
1930
1931 BUILD_BUG_ON(WLAN_KEY_LEN_CCMP != WLAN_KEY_LEN_GCMP);
1932 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_CCMP);
1933 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_GCMP_256);
1934 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_TKIP);
1935 BUILD_BUG_ON(sizeof(conf.key) < sizeof(status->gtk[0].key));
1936
1937 switch (gtk_cipher) {
1938 case WLAN_CIPHER_SUITE_CCMP:
1939 case WLAN_CIPHER_SUITE_GCMP:
1940 conf.conf.keylen = WLAN_KEY_LEN_CCMP;
1941 break;
1942 case WLAN_CIPHER_SUITE_GCMP_256:
1943 conf.conf.keylen = WLAN_KEY_LEN_GCMP_256;
1944 break;
1945 case WLAN_CIPHER_SUITE_TKIP:
1946 conf.conf.keylen = WLAN_KEY_LEN_TKIP;
1947 break;
1948 default:
1949 WARN_ON(1);
1950 }
1951
1952 for (i = 0; i < ARRAY_SIZE(status->gtk); i++) {
1953 if (!status->gtk[i].len)
1954 continue;
1955
1956 conf.conf.keyidx = status->gtk[i].id;
1957 IWL_DEBUG_WOWLAN(mvm,
1958 "Received from FW GTK cipher %d, key index %d\n",
1959 conf.conf.cipher, conf.conf.keyidx);
1960 memcpy(conf.conf.key, status->gtk[i].key,
1961 sizeof(status->gtk[i].key));
1962
1963 key = ieee80211_gtk_rekey_add(vif, &conf.conf);
1964 if (IS_ERR(key))
1965 return false;
1966 iwl_mvm_set_key_rx_seq_idx(key, status, i);
1967 }
1968
1969 return true;
1970 }
1971
1972 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)1973 iwl_mvm_d3_igtk_bigtk_rekey_add(struct iwl_wowlan_status_data *status,
1974 struct ieee80211_vif *vif, u32 cipher,
1975 struct iwl_multicast_key_data *key_data)
1976 {
1977 struct ieee80211_key_conf *key_config;
1978 struct {
1979 struct ieee80211_key_conf conf;
1980 u8 key[WOWLAN_KEY_MAX_SIZE];
1981 } conf = {
1982 .conf.cipher = cipher,
1983 .conf.keyidx = key_data->id,
1984 };
1985 struct ieee80211_key_seq seq;
1986
1987 if (!key_data->len)
1988 return true;
1989
1990 iwl_mvm_d3_set_igtk_bigtk_ipn(key_data, &seq, conf.conf.cipher);
1991
1992 switch (cipher) {
1993 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
1994 conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_128;
1995 break;
1996 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
1997 conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_256;
1998 break;
1999 case WLAN_CIPHER_SUITE_AES_CMAC:
2000 conf.conf.keylen = WLAN_KEY_LEN_AES_CMAC;
2001 break;
2002 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
2003 conf.conf.keylen = WLAN_KEY_LEN_BIP_CMAC_256;
2004 break;
2005 default:
2006 WARN_ON(1);
2007 }
2008 BUILD_BUG_ON(sizeof(conf.key) < sizeof(key_data->key));
2009 memcpy(conf.conf.key, key_data->key, conf.conf.keylen);
2010
2011 key_config = ieee80211_gtk_rekey_add(vif, &conf.conf);
2012 if (IS_ERR(key_config))
2013 return false;
2014 ieee80211_set_key_rx_seq(key_config, 0, &seq);
2015 return true;
2016 }
2017
iwl_mvm_lookup_wowlan_status_ver(struct iwl_mvm * mvm)2018 static int iwl_mvm_lookup_wowlan_status_ver(struct iwl_mvm *mvm)
2019 {
2020 u8 notif_ver;
2021
2022 if (!fw_has_api(&mvm->fw->ucode_capa,
2023 IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL))
2024 return 6;
2025
2026 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */
2027 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP,
2028 WOWLAN_GET_STATUSES, 0);
2029 if (!notif_ver)
2030 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
2031 WOWLAN_GET_STATUSES, 7);
2032
2033 return notif_ver;
2034 }
2035
iwl_mvm_setup_connection_keep(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_wowlan_status_data * status)2036 static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm,
2037 struct ieee80211_vif *vif,
2038 struct iwl_wowlan_status_data *status)
2039 {
2040 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2041 struct iwl_mvm_d3_gtk_iter_data gtkdata = {
2042 .mvm = mvm,
2043 .status = status,
2044 };
2045 u32 disconnection_reasons =
2046 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
2047 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH;
2048
2049 if (!status || !vif->bss_conf.bssid)
2050 return false;
2051
2052 if (status->wakeup_reasons & disconnection_reasons)
2053 return false;
2054
2055 if (iwl_mvm_lookup_wowlan_status_ver(mvm) > 6 ||
2056 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
2057 WOWLAN_INFO_NOTIFICATION,
2058 0))
2059 gtkdata.igtk_support = true;
2060
2061 /* find last GTK that we used initially, if any */
2062 ieee80211_iter_keys(mvm->hw, vif,
2063 iwl_mvm_d3_find_last_keys, >kdata);
2064 /* not trying to keep connections with MFP/unhandled ciphers */
2065 if (gtkdata.unhandled_cipher)
2066 return false;
2067 if (!gtkdata.num_keys)
2068 goto out;
2069
2070 /*
2071 * invalidate all other GTKs that might still exist and update
2072 * the one that we used
2073 */
2074 ieee80211_iter_keys(mvm->hw, vif,
2075 iwl_mvm_d3_update_keys, >kdata);
2076
2077 if (status->num_of_gtk_rekeys) {
2078 __be64 replay_ctr = cpu_to_be64(status->replay_ctr);
2079
2080 IWL_DEBUG_WOWLAN(mvm, "num of GTK rekeying %d\n",
2081 status->num_of_gtk_rekeys);
2082
2083 if (!iwl_mvm_gtk_rekey(status, vif, mvm, gtkdata.gtk_cipher))
2084 return false;
2085
2086 if (!iwl_mvm_d3_igtk_bigtk_rekey_add(status, vif,
2087 gtkdata.igtk_cipher,
2088 &status->igtk))
2089 return false;
2090
2091 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid,
2092 (void *)&replay_ctr, GFP_KERNEL);
2093 }
2094
2095 out:
2096 if (iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP,
2097 WOWLAN_GET_STATUSES, 0) < 10) {
2098 mvmvif->seqno_valid = true;
2099 /* +0x10 because the set API expects next-to-use, not last-used */
2100 mvmvif->seqno = status->non_qos_seq_ctr + 0x10;
2101 }
2102
2103 return true;
2104 }
2105
iwl_mvm_convert_gtk_v2(struct iwl_wowlan_status_data * status,struct iwl_wowlan_gtk_status_v2 * data)2106 static void iwl_mvm_convert_gtk_v2(struct iwl_wowlan_status_data *status,
2107 struct iwl_wowlan_gtk_status_v2 *data)
2108 {
2109 BUILD_BUG_ON(sizeof(status->gtk[0].key) < sizeof(data->key));
2110 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY +
2111 sizeof(data->tkip_mic_key) >
2112 sizeof(status->gtk[0].key));
2113
2114 status->gtk[0].len = data->key_len;
2115 status->gtk[0].flags = data->key_flags;
2116
2117 memcpy(status->gtk[0].key, data->key, sizeof(data->key));
2118
2119 /* if it's as long as the TKIP encryption key, copy MIC key */
2120 if (status->gtk[0].len == NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY)
2121 memcpy(status->gtk[0].key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
2122 data->tkip_mic_key, sizeof(data->tkip_mic_key));
2123 }
2124
iwl_mvm_convert_gtk_v3(struct iwl_wowlan_status_data * status,struct iwl_wowlan_gtk_status_v3 * data)2125 static void iwl_mvm_convert_gtk_v3(struct iwl_wowlan_status_data *status,
2126 struct iwl_wowlan_gtk_status_v3 *data)
2127 {
2128 int data_idx, status_idx = 0;
2129
2130 BUILD_BUG_ON(sizeof(status->gtk[0].key) < sizeof(data[0].key));
2131 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY +
2132 sizeof(data[0].tkip_mic_key) >
2133 sizeof(status->gtk[0].key));
2134 BUILD_BUG_ON(ARRAY_SIZE(status->gtk) < WOWLAN_GTK_KEYS_NUM);
2135 for (data_idx = 0; data_idx < ARRAY_SIZE(status->gtk); data_idx++) {
2136 if (!(data[data_idx].key_len))
2137 continue;
2138 status->gtk[status_idx].len = data[data_idx].key_len;
2139 status->gtk[status_idx].flags = data[data_idx].key_flags;
2140 status->gtk[status_idx].id = status->gtk[status_idx].flags &
2141 IWL_WOWLAN_GTK_IDX_MASK;
2142
2143 memcpy(status->gtk[status_idx].key, data[data_idx].key,
2144 sizeof(data[data_idx].key));
2145
2146 /* if it's as long as the TKIP encryption key, copy MIC key */
2147 if (status->gtk[status_idx].len ==
2148 NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY)
2149 memcpy(status->gtk[status_idx].key +
2150 NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
2151 data[data_idx].tkip_mic_key,
2152 sizeof(data[data_idx].tkip_mic_key));
2153 status_idx++;
2154 }
2155 }
2156
iwl_mvm_convert_igtk(struct iwl_wowlan_status_data * status,struct iwl_wowlan_igtk_status * data)2157 static void iwl_mvm_convert_igtk(struct iwl_wowlan_status_data *status,
2158 struct iwl_wowlan_igtk_status *data)
2159 {
2160 BUILD_BUG_ON(sizeof(status->igtk.key) < sizeof(data->key));
2161
2162 if (!data->key_len)
2163 return;
2164
2165 status->igtk.len = data->key_len;
2166 status->igtk.flags = data->key_flags;
2167 status->igtk.id = u32_get_bits(data->key_flags,
2168 IWL_WOWLAN_IGTK_BIGTK_IDX_MASK)
2169 + WOWLAN_IGTK_MIN_INDEX;
2170
2171 memcpy(status->igtk.key, data->key, sizeof(data->key));
2172 memcpy(status->igtk.ipn, data->ipn, sizeof(data->ipn));
2173 }
2174
iwl_mvm_parse_wowlan_info_notif(struct iwl_mvm * mvm,struct iwl_wowlan_info_notif * data,struct iwl_wowlan_status_data * status,u32 len)2175 static void iwl_mvm_parse_wowlan_info_notif(struct iwl_mvm *mvm,
2176 struct iwl_wowlan_info_notif *data,
2177 struct iwl_wowlan_status_data *status,
2178 u32 len)
2179 {
2180 u32 i;
2181
2182 if (!data) {
2183 IWL_ERR(mvm, "iwl_wowlan_info_notif data is NULL\n");
2184 status = NULL;
2185 return;
2186 }
2187
2188 if (len < sizeof(*data)) {
2189 IWL_ERR(mvm, "Invalid WoWLAN info notification!\n");
2190 status = NULL;
2191 return;
2192 }
2193
2194 iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc);
2195 iwl_mvm_convert_gtk_v3(status, data->gtk);
2196 iwl_mvm_convert_igtk(status, &data->igtk[0]);
2197
2198 status->replay_ctr = le64_to_cpu(data->replay_ctr);
2199 status->pattern_number = le16_to_cpu(data->pattern_number);
2200 for (i = 0; i < IWL_MAX_TID_COUNT; i++)
2201 status->qos_seq_ctr[i] =
2202 le16_to_cpu(data->qos_seq_ctr[i]);
2203 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons);
2204 status->num_of_gtk_rekeys =
2205 le32_to_cpu(data->num_of_gtk_rekeys);
2206 status->received_beacons = le32_to_cpu(data->received_beacons);
2207 status->tid_tear_down = data->tid_tear_down;
2208 }
2209
2210 /* Occasionally, templates would be nice. This is one of those times ... */
2211 #define iwl_mvm_parse_wowlan_status_common(_ver) \
2212 static struct iwl_wowlan_status_data * \
2213 iwl_mvm_parse_wowlan_status_common_ ## _ver(struct iwl_mvm *mvm, \
2214 struct iwl_wowlan_status_ ##_ver *data,\
2215 int len) \
2216 { \
2217 struct iwl_wowlan_status_data *status; \
2218 int data_size, i; \
2219 \
2220 if (len < sizeof(*data)) { \
2221 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \
2222 return NULL; \
2223 } \
2224 \
2225 data_size = ALIGN(le32_to_cpu(data->wake_packet_bufsize), 4); \
2226 if (len != sizeof(*data) + data_size) { \
2227 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \
2228 return NULL; \
2229 } \
2230 \
2231 status = kzalloc(sizeof(*status), GFP_KERNEL); \
2232 if (!status) \
2233 return NULL; \
2234 \
2235 /* copy all the common fields */ \
2236 status->replay_ctr = le64_to_cpu(data->replay_ctr); \
2237 status->pattern_number = le16_to_cpu(data->pattern_number); \
2238 status->non_qos_seq_ctr = le16_to_cpu(data->non_qos_seq_ctr); \
2239 for (i = 0; i < 8; i++) \
2240 status->qos_seq_ctr[i] = \
2241 le16_to_cpu(data->qos_seq_ctr[i]); \
2242 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); \
2243 status->num_of_gtk_rekeys = \
2244 le32_to_cpu(data->num_of_gtk_rekeys); \
2245 status->received_beacons = le32_to_cpu(data->received_beacons); \
2246 status->wake_packet_length = \
2247 le32_to_cpu(data->wake_packet_length); \
2248 status->wake_packet_bufsize = \
2249 le32_to_cpu(data->wake_packet_bufsize); \
2250 if (status->wake_packet_bufsize) { \
2251 status->wake_packet = \
2252 kmemdup(data->wake_packet, \
2253 status->wake_packet_bufsize, \
2254 GFP_KERNEL); \
2255 if (!status->wake_packet) { \
2256 kfree(status); \
2257 return NULL; \
2258 } \
2259 } else { \
2260 status->wake_packet = NULL; \
2261 } \
2262 \
2263 return status; \
2264 }
2265
2266 iwl_mvm_parse_wowlan_status_common(v6)
iwl_mvm_parse_wowlan_status_common(v7)2267 iwl_mvm_parse_wowlan_status_common(v7)
2268 iwl_mvm_parse_wowlan_status_common(v9)
2269 iwl_mvm_parse_wowlan_status_common(v12)
2270
2271 static struct iwl_wowlan_status_data *
2272 iwl_mvm_send_wowlan_get_status(struct iwl_mvm *mvm, u8 sta_id)
2273 {
2274 struct iwl_wowlan_status_data *status;
2275 struct iwl_wowlan_get_status_cmd get_status_cmd = {
2276 .sta_id = cpu_to_le32(sta_id),
2277 };
2278 struct iwl_host_cmd cmd = {
2279 .id = WOWLAN_GET_STATUSES,
2280 .flags = CMD_WANT_SKB,
2281 .data = { &get_status_cmd, },
2282 .len = { sizeof(get_status_cmd), },
2283 };
2284 int ret, len;
2285 u8 notif_ver;
2286 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id,
2287 IWL_FW_CMD_VER_UNKNOWN);
2288
2289 if (cmd_ver == IWL_FW_CMD_VER_UNKNOWN)
2290 cmd.len[0] = 0;
2291
2292 lockdep_assert_held(&mvm->mutex);
2293
2294 ret = iwl_mvm_send_cmd(mvm, &cmd);
2295 if (ret) {
2296 IWL_ERR(mvm, "failed to query wakeup status (%d)\n", ret);
2297 return ERR_PTR(ret);
2298 }
2299
2300 len = iwl_rx_packet_payload_len(cmd.resp_pkt);
2301
2302 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */
2303 notif_ver = iwl_mvm_lookup_wowlan_status_ver(mvm);
2304
2305 if (notif_ver < 7) {
2306 struct iwl_wowlan_status_v6 *v6 = (void *)cmd.resp_pkt->data;
2307
2308 status = iwl_mvm_parse_wowlan_status_common_v6(mvm, v6, len);
2309 if (!status)
2310 goto out_free_resp;
2311
2312 BUILD_BUG_ON(sizeof(v6->gtk.decrypt_key) >
2313 sizeof(status->gtk[0].key));
2314 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY +
2315 sizeof(v6->gtk.tkip_mic_key) >
2316 sizeof(status->gtk[0].key));
2317
2318 /* copy GTK info to the right place */
2319 memcpy(status->gtk[0].key, v6->gtk.decrypt_key,
2320 sizeof(v6->gtk.decrypt_key));
2321 memcpy(status->gtk[0].key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
2322 v6->gtk.tkip_mic_key,
2323 sizeof(v6->gtk.tkip_mic_key));
2324
2325 iwl_mvm_convert_key_counters(status, &v6->gtk.rsc.all_tsc_rsc);
2326
2327 /* hardcode the key length to 16 since v6 only supports 16 */
2328 status->gtk[0].len = 16;
2329
2330 /*
2331 * The key index only uses 2 bits (values 0 to 3) and
2332 * we always set bit 7 which means this is the
2333 * currently used key.
2334 */
2335 status->gtk[0].flags = v6->gtk.key_index | BIT(7);
2336 } else if (notif_ver == 7) {
2337 struct iwl_wowlan_status_v7 *v7 = (void *)cmd.resp_pkt->data;
2338
2339 status = iwl_mvm_parse_wowlan_status_common_v7(mvm, v7, len);
2340 if (!status)
2341 goto out_free_resp;
2342
2343 iwl_mvm_convert_key_counters(status, &v7->gtk[0].rsc.all_tsc_rsc);
2344 iwl_mvm_convert_gtk_v2(status, &v7->gtk[0]);
2345 iwl_mvm_convert_igtk(status, &v7->igtk[0]);
2346 } else if (notif_ver == 9 || notif_ver == 10 || notif_ver == 11) {
2347 struct iwl_wowlan_status_v9 *v9 = (void *)cmd.resp_pkt->data;
2348
2349 /* these three command versions have same layout and size, the
2350 * difference is only in a few not used (reserved) fields.
2351 */
2352 status = iwl_mvm_parse_wowlan_status_common_v9(mvm, v9, len);
2353 if (!status)
2354 goto out_free_resp;
2355
2356 iwl_mvm_convert_key_counters(status, &v9->gtk[0].rsc.all_tsc_rsc);
2357 iwl_mvm_convert_gtk_v2(status, &v9->gtk[0]);
2358 iwl_mvm_convert_igtk(status, &v9->igtk[0]);
2359
2360 status->tid_tear_down = v9->tid_tear_down;
2361 } else if (notif_ver == 12) {
2362 struct iwl_wowlan_status_v12 *v12 = (void *)cmd.resp_pkt->data;
2363
2364 status = iwl_mvm_parse_wowlan_status_common_v12(mvm, v12, len);
2365 if (!status)
2366 goto out_free_resp;
2367
2368 iwl_mvm_convert_key_counters_v5(status, &v12->gtk[0].sc);
2369 iwl_mvm_convert_gtk_v3(status, v12->gtk);
2370 iwl_mvm_convert_igtk(status, &v12->igtk[0]);
2371
2372 status->tid_tear_down = v12->tid_tear_down;
2373 } else {
2374 IWL_ERR(mvm,
2375 "Firmware advertises unknown WoWLAN status response %d!\n",
2376 notif_ver);
2377 status = NULL;
2378 }
2379
2380 out_free_resp:
2381 iwl_free_resp(&cmd);
2382 return status;
2383 }
2384
2385 /* releases the MVM mutex */
iwl_mvm_query_wakeup_reasons(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_wowlan_status_data * status)2386 static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm,
2387 struct ieee80211_vif *vif,
2388 struct iwl_wowlan_status_data *status)
2389 {
2390 int i;
2391 bool keep;
2392 struct iwl_mvm_sta *mvm_ap_sta;
2393
2394 if (!status)
2395 goto out_unlock;
2396
2397 IWL_DEBUG_WOWLAN(mvm, "wakeup reason 0x%x\n",
2398 status->wakeup_reasons);
2399
2400 /* still at hard-coded place 0 for D3 image */
2401 mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, 0);
2402 if (!mvm_ap_sta)
2403 goto out_unlock;
2404
2405 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
2406 u16 seq = status->qos_seq_ctr[i];
2407 /* firmware stores last-used value, we store next value */
2408 seq += 0x10;
2409 mvm_ap_sta->tid_data[i].seq_number = seq;
2410 }
2411
2412 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000) {
2413 i = mvm->offload_tid;
2414 iwl_trans_set_q_ptrs(mvm->trans,
2415 mvm_ap_sta->tid_data[i].txq_id,
2416 mvm_ap_sta->tid_data[i].seq_number >> 4);
2417 }
2418
2419 /* now we have all the data we need, unlock to avoid mac80211 issues */
2420 mutex_unlock(&mvm->mutex);
2421
2422 iwl_mvm_report_wakeup_reasons(mvm, vif, status);
2423
2424 keep = iwl_mvm_setup_connection_keep(mvm, vif, status);
2425
2426 return keep;
2427
2428 out_unlock:
2429 mutex_unlock(&mvm->mutex);
2430 return false;
2431 }
2432
2433 #define ND_QUERY_BUF_LEN (sizeof(struct iwl_scan_offload_profile_match) * \
2434 IWL_SCAN_MAX_PROFILES)
2435
2436 struct iwl_mvm_nd_results {
2437 u32 matched_profiles;
2438 u8 matches[ND_QUERY_BUF_LEN];
2439 };
2440
2441 static int
iwl_mvm_netdetect_query_results(struct iwl_mvm * mvm,struct iwl_mvm_nd_results * results)2442 iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm,
2443 struct iwl_mvm_nd_results *results)
2444 {
2445 struct iwl_scan_offload_match_info *query;
2446 struct iwl_host_cmd cmd = {
2447 .id = SCAN_OFFLOAD_PROFILES_QUERY_CMD,
2448 .flags = CMD_WANT_SKB,
2449 };
2450 int ret, len;
2451 size_t query_len, matches_len;
2452 int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw);
2453
2454 ret = iwl_mvm_send_cmd(mvm, &cmd);
2455 if (ret) {
2456 IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret);
2457 return ret;
2458 }
2459
2460 if (fw_has_api(&mvm->fw->ucode_capa,
2461 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2462 query_len = sizeof(struct iwl_scan_offload_match_info);
2463 matches_len = sizeof(struct iwl_scan_offload_profile_match) *
2464 max_profiles;
2465 } else {
2466 query_len = sizeof(struct iwl_scan_offload_profiles_query_v1);
2467 matches_len = sizeof(struct iwl_scan_offload_profile_match_v1) *
2468 max_profiles;
2469 }
2470
2471 len = iwl_rx_packet_payload_len(cmd.resp_pkt);
2472 if (len < query_len) {
2473 IWL_ERR(mvm, "Invalid scan offload profiles query response!\n");
2474 ret = -EIO;
2475 goto out_free_resp;
2476 }
2477
2478 query = (void *)cmd.resp_pkt->data;
2479
2480 results->matched_profiles = le32_to_cpu(query->matched_profiles);
2481 memcpy(results->matches, query->matches, matches_len);
2482
2483 #ifdef CONFIG_IWLWIFI_DEBUGFS
2484 mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done);
2485 #endif
2486
2487 out_free_resp:
2488 iwl_free_resp(&cmd);
2489 return ret;
2490 }
2491
iwl_mvm_query_num_match_chans(struct iwl_mvm * mvm,struct iwl_mvm_nd_results * results,int idx)2492 static int iwl_mvm_query_num_match_chans(struct iwl_mvm *mvm,
2493 struct iwl_mvm_nd_results *results,
2494 int idx)
2495 {
2496 int n_chans = 0, i;
2497
2498 if (fw_has_api(&mvm->fw->ucode_capa,
2499 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2500 struct iwl_scan_offload_profile_match *matches =
2501 (void *)results->matches;
2502
2503 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; i++)
2504 n_chans += hweight8(matches[idx].matching_channels[i]);
2505 } else {
2506 struct iwl_scan_offload_profile_match_v1 *matches =
2507 (void *)results->matches;
2508
2509 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1; i++)
2510 n_chans += hweight8(matches[idx].matching_channels[i]);
2511 }
2512
2513 return n_chans;
2514 }
2515
iwl_mvm_query_set_freqs(struct iwl_mvm * mvm,struct iwl_mvm_nd_results * results,struct cfg80211_wowlan_nd_match * match,int idx)2516 static void iwl_mvm_query_set_freqs(struct iwl_mvm *mvm,
2517 struct iwl_mvm_nd_results *results,
2518 struct cfg80211_wowlan_nd_match *match,
2519 int idx)
2520 {
2521 int i;
2522
2523 if (fw_has_api(&mvm->fw->ucode_capa,
2524 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2525 struct iwl_scan_offload_profile_match *matches =
2526 (void *)results->matches;
2527
2528 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; i++)
2529 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
2530 match->channels[match->n_channels++] =
2531 mvm->nd_channels[i]->center_freq;
2532 } else {
2533 struct iwl_scan_offload_profile_match_v1 *matches =
2534 (void *)results->matches;
2535
2536 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1 * 8; i++)
2537 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
2538 match->channels[match->n_channels++] =
2539 mvm->nd_channels[i]->center_freq;
2540 }
2541 }
2542
2543 /**
2544 * enum iwl_d3_notif - d3 notifications
2545 * @IWL_D3_NOTIF_WOWLAN_INFO: WOWLAN_INFO_NOTIF was received
2546 * @IWL_D3_NOTIF_WOWLAN_WAKE_PKT: WOWLAN_WAKE_PKT_NOTIF was received
2547 * @IWL_D3_NOTIF_PROT_OFFLOAD: PROT_OFFLOAD_NOTIF was received
2548 * @IWL_D3_ND_MATCH_INFO: OFFLOAD_MATCH_INFO_NOTIF was received
2549 * @IWL_D3_NOTIF_D3_END_NOTIF: D3_END_NOTIF was received
2550 */
2551 enum iwl_d3_notif {
2552 IWL_D3_NOTIF_WOWLAN_INFO = BIT(0),
2553 IWL_D3_NOTIF_WOWLAN_WAKE_PKT = BIT(1),
2554 IWL_D3_NOTIF_PROT_OFFLOAD = BIT(2),
2555 IWL_D3_ND_MATCH_INFO = BIT(3),
2556 IWL_D3_NOTIF_D3_END_NOTIF = BIT(4)
2557 };
2558
2559 /* manage d3 resume data */
2560 struct iwl_d3_data {
2561 struct iwl_wowlan_status_data *status;
2562 bool test;
2563 u32 d3_end_flags;
2564 u32 notif_expected; /* bitmap - see &enum iwl_d3_notif */
2565 u32 notif_received; /* bitmap - see &enum iwl_d3_notif */
2566 struct iwl_mvm_nd_results *nd_results;
2567 bool nd_results_valid;
2568 };
2569
iwl_mvm_query_netdetect_reasons(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_d3_data * d3_data)2570 static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm,
2571 struct ieee80211_vif *vif,
2572 struct iwl_d3_data *d3_data)
2573 {
2574 struct cfg80211_wowlan_nd_info *net_detect = NULL;
2575 struct cfg80211_wowlan_wakeup wakeup = {
2576 .pattern_idx = -1,
2577 };
2578 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
2579 unsigned long matched_profiles;
2580 u32 reasons = 0;
2581 int i, n_matches, ret;
2582
2583 if (WARN_ON(!d3_data || !d3_data->status))
2584 goto out;
2585
2586 reasons = d3_data->status->wakeup_reasons;
2587
2588 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
2589 wakeup.rfkill_release = true;
2590
2591 if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS)
2592 goto out;
2593
2594 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
2595 WOWLAN_INFO_NOTIFICATION, 0)) {
2596 IWL_INFO(mvm, "Query FW for ND results\n");
2597 ret = iwl_mvm_netdetect_query_results(mvm, d3_data->nd_results);
2598
2599 } else {
2600 IWL_INFO(mvm, "Notification based ND results\n");
2601 ret = d3_data->nd_results_valid ? 0 : -1;
2602 }
2603
2604 if (ret || !d3_data->nd_results->matched_profiles) {
2605 wakeup_report = NULL;
2606 goto out;
2607 }
2608
2609 matched_profiles = d3_data->nd_results->matched_profiles;
2610 if (mvm->n_nd_match_sets) {
2611 n_matches = hweight_long(matched_profiles);
2612 } else {
2613 IWL_ERR(mvm, "no net detect match information available\n");
2614 n_matches = 0;
2615 }
2616
2617 net_detect = kzalloc(struct_size(net_detect, matches, n_matches),
2618 GFP_KERNEL);
2619 if (!net_detect || !n_matches)
2620 goto out_report_nd;
2621
2622 for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) {
2623 struct cfg80211_wowlan_nd_match *match;
2624 int idx, n_channels = 0;
2625
2626 n_channels = iwl_mvm_query_num_match_chans(mvm,
2627 d3_data->nd_results,
2628 i);
2629
2630 match = kzalloc(struct_size(match, channels, n_channels),
2631 GFP_KERNEL);
2632 if (!match)
2633 goto out_report_nd;
2634
2635 net_detect->matches[net_detect->n_matches++] = match;
2636
2637 /* We inverted the order of the SSIDs in the scan
2638 * request, so invert the index here.
2639 */
2640 idx = mvm->n_nd_match_sets - i - 1;
2641 match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len;
2642 memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid,
2643 match->ssid.ssid_len);
2644
2645 if (mvm->n_nd_channels < n_channels)
2646 continue;
2647
2648 iwl_mvm_query_set_freqs(mvm, d3_data->nd_results, match, i);
2649 }
2650
2651 out_report_nd:
2652 wakeup.net_detect = net_detect;
2653 out:
2654 iwl_mvm_free_nd(mvm);
2655
2656 mutex_unlock(&mvm->mutex);
2657 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
2658
2659 if (net_detect) {
2660 for (i = 0; i < net_detect->n_matches; i++)
2661 kfree(net_detect->matches[i]);
2662 kfree(net_detect);
2663 }
2664 }
2665
iwl_mvm_d3_disconnect_iter(void * data,u8 * mac,struct ieee80211_vif * vif)2666 static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac,
2667 struct ieee80211_vif *vif)
2668 {
2669 /* skip the one we keep connection on */
2670 if (data == vif)
2671 return;
2672
2673 if (vif->type == NL80211_IFTYPE_STATION)
2674 ieee80211_resume_disconnect(vif);
2675 }
2676
iwl_mvm_rt_status(struct iwl_trans * trans,u32 base,u32 * err_id)2677 static bool iwl_mvm_rt_status(struct iwl_trans *trans, u32 base, u32 *err_id)
2678 {
2679 struct error_table_start {
2680 /* cf. struct iwl_error_event_table */
2681 u32 valid;
2682 __le32 err_id;
2683 } err_info;
2684
2685 if (!base)
2686 return false;
2687
2688 iwl_trans_read_mem_bytes(trans, base,
2689 &err_info, sizeof(err_info));
2690 if (err_info.valid && err_id)
2691 *err_id = le32_to_cpu(err_info.err_id);
2692
2693 return !!err_info.valid;
2694 }
2695
iwl_mvm_check_rt_status(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2696 static bool iwl_mvm_check_rt_status(struct iwl_mvm *mvm,
2697 struct ieee80211_vif *vif)
2698 {
2699 u32 err_id;
2700
2701 /* check for lmac1 error */
2702 if (iwl_mvm_rt_status(mvm->trans,
2703 mvm->trans->dbg.lmac_error_event_table[0],
2704 &err_id)) {
2705 if (err_id == RF_KILL_INDICATOR_FOR_WOWLAN) {
2706 struct cfg80211_wowlan_wakeup wakeup = {
2707 .rfkill_release = true,
2708 };
2709 ieee80211_report_wowlan_wakeup(vif, &wakeup,
2710 GFP_KERNEL);
2711 }
2712 return true;
2713 }
2714
2715 /* check if we have lmac2 set and check for error */
2716 if (iwl_mvm_rt_status(mvm->trans,
2717 mvm->trans->dbg.lmac_error_event_table[1], NULL))
2718 return true;
2719
2720 /* check for umac error */
2721 if (iwl_mvm_rt_status(mvm->trans,
2722 mvm->trans->dbg.umac_error_event_table, NULL))
2723 return true;
2724
2725 return false;
2726 }
2727
2728 /*
2729 * This function assumes:
2730 * 1. The mutex is already held.
2731 * 2. The callee functions unlock the mutex.
2732 */
2733 static bool
iwl_mvm_choose_query_wakeup_reasons(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_d3_data * d3_data)2734 iwl_mvm_choose_query_wakeup_reasons(struct iwl_mvm *mvm,
2735 struct ieee80211_vif *vif,
2736 struct iwl_d3_data *d3_data)
2737 {
2738 lockdep_assert_held(&mvm->mutex);
2739
2740 /* if FW uses status notification, status shouldn't be NULL here */
2741 if (!d3_data->status) {
2742 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2743 u8 sta_id = mvm->net_detect ? IWL_MVM_INVALID_STA :
2744 mvmvif->deflink.ap_sta_id;
2745
2746 d3_data->status = iwl_mvm_send_wowlan_get_status(mvm, sta_id);
2747 }
2748
2749 if (mvm->net_detect) {
2750 iwl_mvm_query_netdetect_reasons(mvm, vif, d3_data);
2751 } else {
2752 bool keep = iwl_mvm_query_wakeup_reasons(mvm, vif,
2753 d3_data->status);
2754
2755 #ifdef CONFIG_IWLWIFI_DEBUGFS
2756 if (keep)
2757 mvm->keep_vif = vif;
2758 #endif
2759
2760 return keep;
2761 }
2762 return false;
2763 }
2764
2765 #define IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT (IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET | \
2766 IWL_WOWLAN_WAKEUP_BY_PATTERN | \
2767 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN |\
2768 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN_WILDCARD |\
2769 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN |\
2770 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN_WILDCARD)
2771
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)2772 static int iwl_mvm_wowlan_store_wake_pkt(struct iwl_mvm *mvm,
2773 struct iwl_wowlan_wake_pkt_notif *notif,
2774 struct iwl_wowlan_status_data *status,
2775 u32 len)
2776 {
2777 u32 data_size, packet_len = le32_to_cpu(notif->wake_packet_length);
2778
2779 if (len < sizeof(*notif)) {
2780 IWL_ERR(mvm, "Invalid WoWLAN wake packet notification!\n");
2781 return -EIO;
2782 }
2783
2784 if (WARN_ON(!status)) {
2785 IWL_ERR(mvm, "Got wake packet notification but wowlan status data is NULL\n");
2786 return -EIO;
2787 }
2788
2789 if (WARN_ON(!(status->wakeup_reasons &
2790 IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT))) {
2791 IWL_ERR(mvm, "Got wakeup packet but wakeup reason is %x\n",
2792 status->wakeup_reasons);
2793 return -EIO;
2794 }
2795
2796 data_size = len - offsetof(struct iwl_wowlan_wake_pkt_notif, wake_packet);
2797
2798 /* data_size got the padding from the notification, remove it. */
2799 if (packet_len < data_size)
2800 data_size = packet_len;
2801
2802 status->wake_packet = kmemdup(notif->wake_packet, data_size,
2803 GFP_ATOMIC);
2804
2805 if (!status->wake_packet)
2806 return -ENOMEM;
2807
2808 status->wake_packet_length = packet_len;
2809 status->wake_packet_bufsize = data_size;
2810
2811 return 0;
2812 }
2813
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)2814 static void iwl_mvm_nd_match_info_handler(struct iwl_mvm *mvm,
2815 struct iwl_d3_data *d3_data,
2816 struct iwl_scan_offload_match_info *notif,
2817 u32 len)
2818 {
2819 struct iwl_wowlan_status_data *status = d3_data->status;
2820 struct ieee80211_vif *vif = iwl_mvm_get_bss_vif(mvm);
2821 struct iwl_mvm_nd_results *results = d3_data->nd_results;
2822 size_t i, matches_len = sizeof(struct iwl_scan_offload_profile_match) *
2823 iwl_umac_scan_get_max_profiles(mvm->fw);
2824
2825 if (IS_ERR_OR_NULL(vif))
2826 return;
2827
2828 if (len < sizeof(struct iwl_scan_offload_match_info)) {
2829 IWL_ERR(mvm, "Invalid scan match info notification\n");
2830 return;
2831 }
2832
2833 if (!mvm->net_detect) {
2834 IWL_ERR(mvm, "Unexpected scan match info notification\n");
2835 return;
2836 }
2837
2838 if (!status || status->wakeup_reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
2839 IWL_ERR(mvm,
2840 "Ignore scan match info notification: no reason\n");
2841 return;
2842 }
2843
2844 #ifdef CONFIG_IWLWIFI_DEBUGFS
2845 mvm->last_netdetect_scans = le32_to_cpu(notif->n_scans_done);
2846 #endif
2847
2848 results->matched_profiles = le32_to_cpu(notif->matched_profiles);
2849 IWL_INFO(mvm, "number of matched profiles=%u\n",
2850 results->matched_profiles);
2851
2852 if (results->matched_profiles) {
2853 memcpy(results->matches, notif->matches, matches_len);
2854 d3_data->nd_results_valid = TRUE;
2855 }
2856
2857 /* no scan should be active at this point */
2858 mvm->scan_status = 0;
2859 for (i = 0; i < mvm->max_scans; i++)
2860 mvm->scan_uid_status[i] = 0;
2861 }
2862
iwl_mvm_wait_d3_notif(struct iwl_notif_wait_data * notif_wait,struct iwl_rx_packet * pkt,void * data)2863 static bool iwl_mvm_wait_d3_notif(struct iwl_notif_wait_data *notif_wait,
2864 struct iwl_rx_packet *pkt, void *data)
2865 {
2866 struct iwl_mvm *mvm =
2867 container_of(notif_wait, struct iwl_mvm, notif_wait);
2868 struct iwl_d3_data *d3_data = data;
2869 u32 len;
2870 int ret;
2871 int wowlan_info_ver = iwl_fw_lookup_notif_ver(mvm->fw,
2872 PROT_OFFLOAD_GROUP,
2873 WOWLAN_INFO_NOTIFICATION,
2874 IWL_FW_CMD_VER_UNKNOWN);
2875
2876
2877 switch (WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) {
2878 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION): {
2879 struct iwl_wowlan_info_notif *notif;
2880
2881 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_INFO) {
2882 /* We might get two notifications due to dual bss */
2883 IWL_DEBUG_WOWLAN(mvm,
2884 "Got additional wowlan info notification\n");
2885 break;
2886 }
2887
2888 if (wowlan_info_ver < 2) {
2889 struct iwl_wowlan_info_notif_v1 *notif_v1 = (void *)pkt->data;
2890
2891 notif = kmemdup(notif_v1, sizeof(*notif), GFP_ATOMIC);
2892 if (!notif)
2893 return false;
2894
2895 notif->tid_tear_down = notif_v1->tid_tear_down;
2896 notif->station_id = notif_v1->station_id;
2897 memset_after(notif, 0, station_id);
2898 } else {
2899 notif = (void *)pkt->data;
2900 }
2901
2902 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_INFO;
2903 len = iwl_rx_packet_payload_len(pkt);
2904 iwl_mvm_parse_wowlan_info_notif(mvm, notif, d3_data->status,
2905 len);
2906
2907 if (wowlan_info_ver < 2)
2908 kfree(notif);
2909
2910 if (d3_data->status &&
2911 d3_data->status->wakeup_reasons & IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT)
2912 /* We are supposed to get also wake packet notif */
2913 d3_data->notif_expected |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT;
2914
2915 break;
2916 }
2917 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION): {
2918 struct iwl_wowlan_wake_pkt_notif *notif = (void *)pkt->data;
2919
2920 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_WAKE_PKT) {
2921 /* We shouldn't get two wake packet notifications */
2922 IWL_ERR(mvm,
2923 "Got additional wowlan wake packet notification\n");
2924 } else {
2925 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT;
2926 len = iwl_rx_packet_payload_len(pkt);
2927 ret = iwl_mvm_wowlan_store_wake_pkt(mvm, notif,
2928 d3_data->status,
2929 len);
2930 if (ret)
2931 IWL_ERR(mvm,
2932 "Can't parse WOWLAN_WAKE_PKT_NOTIFICATION\n");
2933 }
2934
2935 break;
2936 }
2937 case WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF): {
2938 struct iwl_scan_offload_match_info *notif = (void *)pkt->data;
2939
2940 if (d3_data->notif_received & IWL_D3_ND_MATCH_INFO) {
2941 IWL_ERR(mvm,
2942 "Got additional netdetect match info\n");
2943 break;
2944 }
2945
2946 d3_data->notif_received |= IWL_D3_ND_MATCH_INFO;
2947
2948 /* explicitly set this in the 'expected' as well */
2949 d3_data->notif_expected |= IWL_D3_ND_MATCH_INFO;
2950
2951 len = iwl_rx_packet_payload_len(pkt);
2952 iwl_mvm_nd_match_info_handler(mvm, d3_data, notif, len);
2953 break;
2954 }
2955 case WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION): {
2956 struct iwl_mvm_d3_end_notif *notif = (void *)pkt->data;
2957
2958 d3_data->d3_end_flags = __le32_to_cpu(notif->flags);
2959 d3_data->notif_received |= IWL_D3_NOTIF_D3_END_NOTIF;
2960
2961 break;
2962 }
2963 default:
2964 WARN_ON(1);
2965 }
2966
2967 return d3_data->notif_received == d3_data->notif_expected;
2968 }
2969
iwl_mvm_resume_firmware(struct iwl_mvm * mvm,bool test)2970 static int iwl_mvm_resume_firmware(struct iwl_mvm *mvm, bool test)
2971 {
2972 int ret;
2973 enum iwl_d3_status d3_status;
2974 struct iwl_host_cmd cmd = {
2975 .id = D0I3_END_CMD,
2976 .flags = CMD_WANT_SKB | CMD_SEND_IN_D3,
2977 };
2978 bool reset = fw_has_capa(&mvm->fw->ucode_capa,
2979 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2980
2981 ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, !reset);
2982 if (ret)
2983 return ret;
2984
2985 if (d3_status != IWL_D3_STATUS_ALIVE) {
2986 IWL_INFO(mvm, "Device was reset during suspend\n");
2987 return -ENOENT;
2988 }
2989
2990 /*
2991 * We should trigger resume flow using command only for 22000 family
2992 * AX210 and above don't need the command since they have
2993 * the doorbell interrupt.
2994 */
2995 if (mvm->trans->trans_cfg->device_family <= IWL_DEVICE_FAMILY_22000 &&
2996 fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_D0I3_END_FIRST)) {
2997 ret = iwl_mvm_send_cmd(mvm, &cmd);
2998 if (ret < 0)
2999 IWL_ERR(mvm, "Failed to send D0I3_END_CMD first (%d)\n",
3000 ret);
3001 }
3002
3003 return ret;
3004 }
3005
3006 #define IWL_MVM_D3_NOTIF_TIMEOUT (HZ / 5)
3007
iwl_mvm_d3_notif_wait(struct iwl_mvm * mvm,struct iwl_d3_data * d3_data)3008 static int iwl_mvm_d3_notif_wait(struct iwl_mvm *mvm,
3009 struct iwl_d3_data *d3_data)
3010 {
3011 static const u16 d3_resume_notif[] = {
3012 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION),
3013 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION),
3014 WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF),
3015 WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION)
3016 };
3017 struct iwl_notification_wait wait_d3_notif;
3018 int ret;
3019
3020 iwl_init_notification_wait(&mvm->notif_wait, &wait_d3_notif,
3021 d3_resume_notif, ARRAY_SIZE(d3_resume_notif),
3022 iwl_mvm_wait_d3_notif, d3_data);
3023
3024 ret = iwl_mvm_resume_firmware(mvm, d3_data->test);
3025 if (ret) {
3026 iwl_remove_notification(&mvm->notif_wait, &wait_d3_notif);
3027 return ret;
3028 }
3029
3030 return iwl_wait_notification(&mvm->notif_wait, &wait_d3_notif,
3031 IWL_MVM_D3_NOTIF_TIMEOUT);
3032 }
3033
iwl_mvm_d3_resume_notif_based(struct iwl_mvm * mvm)3034 static inline bool iwl_mvm_d3_resume_notif_based(struct iwl_mvm *mvm)
3035 {
3036 return iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
3037 WOWLAN_INFO_NOTIFICATION, 0) &&
3038 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
3039 WOWLAN_WAKE_PKT_NOTIFICATION, 0) &&
3040 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
3041 D3_END_NOTIFICATION, 0);
3042 }
3043
__iwl_mvm_resume(struct iwl_mvm * mvm,bool test)3044 static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test)
3045 {
3046 struct ieee80211_vif *vif = NULL;
3047 int ret = 1;
3048 struct iwl_mvm_nd_results results = {};
3049 struct iwl_d3_data d3_data = {
3050 .test = test,
3051 .notif_expected =
3052 IWL_D3_NOTIF_WOWLAN_INFO |
3053 IWL_D3_NOTIF_D3_END_NOTIF,
3054 .nd_results_valid = false,
3055 .nd_results = &results,
3056 };
3057 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
3058 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
3059 bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa,
3060 IWL_UCODE_TLV_CAPA_D0I3_END_FIRST);
3061 bool resume_notif_based = iwl_mvm_d3_resume_notif_based(mvm);
3062 bool keep = false;
3063
3064 mutex_lock(&mvm->mutex);
3065
3066 mvm->last_reset_or_resume_time_jiffies = jiffies;
3067
3068 /* get the BSS vif pointer again */
3069 vif = iwl_mvm_get_bss_vif(mvm);
3070 if (IS_ERR_OR_NULL(vif))
3071 goto err;
3072
3073 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
3074
3075 if (iwl_mvm_check_rt_status(mvm, vif)) {
3076 set_bit(STATUS_FW_ERROR, &mvm->trans->status);
3077 iwl_mvm_dump_nic_error_log(mvm);
3078 iwl_dbg_tlv_time_point(&mvm->fwrt,
3079 IWL_FW_INI_TIME_POINT_FW_ASSERT, NULL);
3080 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert,
3081 false, 0);
3082 ret = 1;
3083 goto err;
3084 }
3085
3086 if (resume_notif_based) {
3087 d3_data.status = kzalloc(sizeof(*d3_data.status), GFP_KERNEL);
3088 if (!d3_data.status) {
3089 IWL_ERR(mvm, "Failed to allocate wowlan status\n");
3090 ret = -ENOMEM;
3091 goto err;
3092 }
3093
3094 ret = iwl_mvm_d3_notif_wait(mvm, &d3_data);
3095 if (ret)
3096 goto err;
3097 } else {
3098 ret = iwl_mvm_resume_firmware(mvm, test);
3099 if (ret < 0)
3100 goto err;
3101 }
3102
3103 /* after the successful handshake, we're out of D3 */
3104 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
3105
3106 /* when reset is required we can't send these following commands */
3107 if (d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)
3108 goto query_wakeup_reasons;
3109
3110 /*
3111 * Query the current location and source from the D3 firmware so we
3112 * can play it back when we re-intiailize the D0 firmware
3113 */
3114 iwl_mvm_update_changed_regdom(mvm);
3115
3116 /* Re-configure PPAG settings */
3117 iwl_mvm_ppag_send_cmd(mvm);
3118
3119 if (!unified_image)
3120 /* Re-configure default SAR profile */
3121 iwl_mvm_sar_select_profile(mvm, 1, 1);
3122
3123 if (mvm->net_detect && unified_image) {
3124 /* If this is a non-unified image, we restart the FW,
3125 * so no need to stop the netdetect scan. If that
3126 * fails, continue and try to get the wake-up reasons,
3127 * but trigger a HW restart by keeping a failure code
3128 * in ret.
3129 */
3130 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT,
3131 false);
3132 }
3133
3134 query_wakeup_reasons:
3135 keep = iwl_mvm_choose_query_wakeup_reasons(mvm, vif, &d3_data);
3136 /* has unlocked the mutex, so skip that */
3137 goto out;
3138
3139 err:
3140 mutex_unlock(&mvm->mutex);
3141 out:
3142 if (d3_data.status)
3143 kfree(d3_data.status->wake_packet);
3144 kfree(d3_data.status);
3145 iwl_mvm_free_nd(mvm);
3146
3147 if (!d3_data.test && !mvm->net_detect)
3148 ieee80211_iterate_active_interfaces_mtx(mvm->hw,
3149 IEEE80211_IFACE_ITER_NORMAL,
3150 iwl_mvm_d3_disconnect_iter,
3151 keep ? vif : NULL);
3152
3153 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
3154
3155 /* no need to reset the device in unified images, if successful */
3156 if (unified_image && !ret) {
3157 /* nothing else to do if we already sent D0I3_END_CMD */
3158 if (d0i3_first)
3159 return 0;
3160
3161 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
3162 D3_END_NOTIFICATION, 0)) {
3163 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL);
3164 if (!ret)
3165 return 0;
3166 } else if (!(d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)) {
3167 return 0;
3168 }
3169 }
3170
3171 /*
3172 * Reconfigure the device in one of the following cases:
3173 * 1. We are not using a unified image
3174 * 2. We are using a unified image but had an error while exiting D3
3175 */
3176 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
3177
3178 /* regardless of what happened, we're now out of D3 */
3179 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
3180
3181 return 1;
3182 }
3183
iwl_mvm_resume(struct ieee80211_hw * hw)3184 int iwl_mvm_resume(struct ieee80211_hw *hw)
3185 {
3186 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3187 int ret;
3188
3189 ret = __iwl_mvm_resume(mvm, false);
3190
3191 iwl_mvm_resume_tcm(mvm);
3192
3193 iwl_fw_runtime_resume(&mvm->fwrt);
3194
3195 return ret;
3196 }
3197
iwl_mvm_set_wakeup(struct ieee80211_hw * hw,bool enabled)3198 void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled)
3199 {
3200 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3201
3202 device_set_wakeup_enable(mvm->trans->dev, enabled);
3203 }
3204
3205 #ifdef CONFIG_IWLWIFI_DEBUGFS
iwl_mvm_d3_test_open(struct inode * inode,struct file * file)3206 static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file)
3207 {
3208 struct iwl_mvm *mvm = inode->i_private;
3209 int err;
3210
3211 if (mvm->d3_test_active)
3212 return -EBUSY;
3213
3214 file->private_data = inode->i_private;
3215
3216 iwl_mvm_pause_tcm(mvm, true);
3217
3218 iwl_fw_runtime_suspend(&mvm->fwrt);
3219
3220 /* start pseudo D3 */
3221 rtnl_lock();
3222 wiphy_lock(mvm->hw->wiphy);
3223 err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true);
3224 wiphy_unlock(mvm->hw->wiphy);
3225 rtnl_unlock();
3226 if (err > 0)
3227 err = -EINVAL;
3228 if (err)
3229 return err;
3230
3231 mvm->d3_test_active = true;
3232 mvm->keep_vif = NULL;
3233 return 0;
3234 }
3235
iwl_mvm_d3_test_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)3236 static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf,
3237 size_t count, loff_t *ppos)
3238 {
3239 struct iwl_mvm *mvm = file->private_data;
3240 u32 pme_asserted;
3241
3242 while (true) {
3243 /* read pme_ptr if available */
3244 if (mvm->d3_test_pme_ptr) {
3245 pme_asserted = iwl_trans_read_mem32(mvm->trans,
3246 mvm->d3_test_pme_ptr);
3247 if (pme_asserted)
3248 break;
3249 }
3250
3251 if (msleep_interruptible(100))
3252 break;
3253 }
3254
3255 return 0;
3256 }
3257
iwl_mvm_d3_test_disconn_work_iter(void * _data,u8 * mac,struct ieee80211_vif * vif)3258 static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac,
3259 struct ieee80211_vif *vif)
3260 {
3261 /* skip the one we keep connection on */
3262 if (_data == vif)
3263 return;
3264
3265 if (vif->type == NL80211_IFTYPE_STATION)
3266 ieee80211_connection_loss(vif);
3267 }
3268
iwl_mvm_d3_test_release(struct inode * inode,struct file * file)3269 static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file)
3270 {
3271 struct iwl_mvm *mvm = inode->i_private;
3272 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
3273 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
3274
3275 mvm->d3_test_active = false;
3276
3277 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
3278
3279 rtnl_lock();
3280 wiphy_lock(mvm->hw->wiphy);
3281 __iwl_mvm_resume(mvm, true);
3282 wiphy_unlock(mvm->hw->wiphy);
3283 rtnl_unlock();
3284
3285 iwl_mvm_resume_tcm(mvm);
3286
3287 iwl_fw_runtime_resume(&mvm->fwrt);
3288
3289 iwl_abort_notification_waits(&mvm->notif_wait);
3290 if (!unified_image) {
3291 int remaining_time = 10;
3292
3293 ieee80211_restart_hw(mvm->hw);
3294
3295 /* wait for restart and disconnect all interfaces */
3296 while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
3297 remaining_time > 0) {
3298 remaining_time--;
3299 msleep(1000);
3300 }
3301
3302 if (remaining_time == 0)
3303 IWL_ERR(mvm, "Timed out waiting for HW restart!\n");
3304 }
3305
3306 ieee80211_iterate_active_interfaces_atomic(
3307 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
3308 iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif);
3309
3310 return 0;
3311 }
3312
3313 const struct file_operations iwl_dbgfs_d3_test_ops = {
3314 .llseek = no_llseek,
3315 .open = iwl_mvm_d3_test_open,
3316 .read = iwl_mvm_d3_test_read,
3317 .release = iwl_mvm_d3_test_release,
3318 };
3319 #endif
3320
