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 = kzalloc(sizeof(*data.rsc), GFP_KERNEL);
465 if (!data.rsc)
466 return -ENOMEM;
467
468 for (i = 0; i < ARRAY_SIZE(data.rsc->mcast_key_id_map); i++)
469 data.rsc->mcast_key_id_map[i] =
470 IWL_MCAST_KEY_MAP_INVALID;
471 data.rsc->sta_id = cpu_to_le32(mvmvif->deflink.ap_sta_id);
472
473 ieee80211_iter_keys(mvm->hw, vif,
474 iwl_mvm_wowlan_get_rsc_v5_data,
475 &data);
476
477 if (data.have_rsc)
478 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM,
479 CMD_ASYNC, sizeof(*data.rsc),
480 data.rsc);
481 else
482 ret = 0;
483 kfree(data.rsc);
484 } else if (ver == 4 || ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN) {
485 struct wowlan_key_rsc_tsc_data data = {};
486 int size;
487
488 data.rsc_tsc = kzalloc(sizeof(*data.rsc_tsc), GFP_KERNEL);
489 if (!data.rsc_tsc)
490 return -ENOMEM;
491
492 if (ver == 4) {
493 size = sizeof(*data.rsc_tsc);
494 data.rsc_tsc->sta_id =
495 cpu_to_le32(mvmvif->deflink.ap_sta_id);
496 } else {
497 /* ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN */
498 size = sizeof(data.rsc_tsc->params);
499 }
500
501 ieee80211_iter_keys(mvm->hw, vif,
502 iwl_mvm_wowlan_get_rsc_tsc_data,
503 &data);
504
505 if (data.have_rsc_tsc)
506 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM,
507 CMD_ASYNC, size,
508 data.rsc_tsc);
509 else
510 ret = 0;
511 kfree(data.rsc_tsc);
512 } else {
513 ret = 0;
514 WARN_ON_ONCE(1);
515 }
516
517 return ret;
518 }
519
520 struct wowlan_key_tkip_data {
521 struct iwl_wowlan_tkip_params_cmd tkip;
522 bool have_tkip_keys;
523 };
524
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)525 static void iwl_mvm_wowlan_get_tkip_data(struct ieee80211_hw *hw,
526 struct ieee80211_vif *vif,
527 struct ieee80211_sta *sta,
528 struct ieee80211_key_conf *key,
529 void *_data)
530 {
531 struct wowlan_key_tkip_data *data = _data;
532 struct iwl_p1k_cache *rx_p1ks;
533 u8 *rx_mic_key;
534 struct ieee80211_key_seq seq;
535 u32 cur_rx_iv32 = 0;
536 u16 p1k[IWL_P1K_SIZE];
537 int i;
538
539 switch (key->cipher) {
540 default:
541 break;
542 case WLAN_CIPHER_SUITE_TKIP:
543 if (sta) {
544 u64 pn64;
545
546 rx_p1ks = data->tkip.rx_uni;
547
548 pn64 = atomic64_read(&key->tx_pn);
549
550 ieee80211_get_tkip_p1k_iv(key, TKIP_PN_TO_IV32(pn64),
551 p1k);
552 iwl_mvm_convert_p1k(p1k, data->tkip.tx.p1k);
553
554 memcpy(data->tkip.mic_keys.tx,
555 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
556 IWL_MIC_KEY_SIZE);
557
558 rx_mic_key = data->tkip.mic_keys.rx_unicast;
559 } else {
560 rx_p1ks = data->tkip.rx_multi;
561 rx_mic_key = data->tkip.mic_keys.rx_mcast;
562 }
563
564 for (i = 0; i < IWL_NUM_RSC; i++) {
565 ieee80211_get_key_rx_seq(key, i, &seq);
566 /* wrapping isn't allowed, AP must rekey */
567 if (seq.tkip.iv32 > cur_rx_iv32)
568 cur_rx_iv32 = seq.tkip.iv32;
569 }
570
571 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
572 cur_rx_iv32, p1k);
573 iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k);
574 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
575 cur_rx_iv32 + 1, p1k);
576 iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k);
577
578 memcpy(rx_mic_key,
579 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
580 IWL_MIC_KEY_SIZE);
581
582 data->have_tkip_keys = true;
583 break;
584 }
585 }
586
587 struct wowlan_key_gtk_type_iter {
588 struct iwl_wowlan_kek_kck_material_cmd_v4 *kek_kck_cmd;
589 };
590
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)591 static void iwl_mvm_wowlan_gtk_type_iter(struct ieee80211_hw *hw,
592 struct ieee80211_vif *vif,
593 struct ieee80211_sta *sta,
594 struct ieee80211_key_conf *key,
595 void *_data)
596 {
597 struct wowlan_key_gtk_type_iter *data = _data;
598
599 switch (key->cipher) {
600 default:
601 return;
602 case WLAN_CIPHER_SUITE_TKIP:
603 if (!sta)
604 data->kek_kck_cmd->gtk_cipher =
605 cpu_to_le32(STA_KEY_FLG_TKIP);
606 return;
607 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
608 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
609 data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_GCMP);
610 return;
611 case WLAN_CIPHER_SUITE_AES_CMAC:
612 data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_CCM);
613 return;
614 case WLAN_CIPHER_SUITE_CCMP:
615 if (!sta)
616 data->kek_kck_cmd->gtk_cipher =
617 cpu_to_le32(STA_KEY_FLG_CCM);
618 return;
619 case WLAN_CIPHER_SUITE_GCMP:
620 case WLAN_CIPHER_SUITE_GCMP_256:
621 if (!sta)
622 data->kek_kck_cmd->gtk_cipher =
623 cpu_to_le32(STA_KEY_FLG_GCMP);
624 return;
625 }
626 }
627
iwl_mvm_send_patterns_v1(struct iwl_mvm * mvm,struct cfg80211_wowlan * wowlan)628 static int iwl_mvm_send_patterns_v1(struct iwl_mvm *mvm,
629 struct cfg80211_wowlan *wowlan)
630 {
631 struct iwl_wowlan_patterns_cmd_v1 *pattern_cmd;
632 struct iwl_host_cmd cmd = {
633 .id = WOWLAN_PATTERNS,
634 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
635 };
636 int i, err;
637
638 if (!wowlan->n_patterns)
639 return 0;
640
641 cmd.len[0] = struct_size(pattern_cmd, patterns, wowlan->n_patterns);
642
643 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
644 if (!pattern_cmd)
645 return -ENOMEM;
646
647 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
648
649 for (i = 0; i < wowlan->n_patterns; i++) {
650 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
651
652 memcpy(&pattern_cmd->patterns[i].mask,
653 wowlan->patterns[i].mask, mask_len);
654 memcpy(&pattern_cmd->patterns[i].pattern,
655 wowlan->patterns[i].pattern,
656 wowlan->patterns[i].pattern_len);
657 pattern_cmd->patterns[i].mask_size = mask_len;
658 pattern_cmd->patterns[i].pattern_size =
659 wowlan->patterns[i].pattern_len;
660 }
661
662 cmd.data[0] = pattern_cmd;
663 err = iwl_mvm_send_cmd(mvm, &cmd);
664 kfree(pattern_cmd);
665 return err;
666 }
667
iwl_mvm_send_patterns(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct cfg80211_wowlan * wowlan)668 static int iwl_mvm_send_patterns(struct iwl_mvm *mvm,
669 struct ieee80211_vif *vif,
670 struct cfg80211_wowlan *wowlan)
671 {
672 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
673 struct iwl_wowlan_patterns_cmd *pattern_cmd;
674 struct iwl_host_cmd cmd = {
675 .id = WOWLAN_PATTERNS,
676 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
677 };
678 int i, err;
679 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id,
680 IWL_FW_CMD_VER_UNKNOWN);
681
682 if (!wowlan->n_patterns)
683 return 0;
684
685 cmd.len[0] = sizeof(*pattern_cmd) +
686 wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern_v2);
687
688 pattern_cmd = kzalloc(cmd.len[0], GFP_KERNEL);
689 if (!pattern_cmd)
690 return -ENOMEM;
691
692 pattern_cmd->n_patterns = wowlan->n_patterns;
693 if (ver >= 3)
694 pattern_cmd->sta_id = mvmvif->deflink.ap_sta_id;
695
696 for (i = 0; i < wowlan->n_patterns; i++) {
697 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
698
699 pattern_cmd->patterns[i].pattern_type =
700 WOWLAN_PATTERN_TYPE_BITMASK;
701
702 memcpy(&pattern_cmd->patterns[i].u.bitmask.mask,
703 wowlan->patterns[i].mask, mask_len);
704 memcpy(&pattern_cmd->patterns[i].u.bitmask.pattern,
705 wowlan->patterns[i].pattern,
706 wowlan->patterns[i].pattern_len);
707 pattern_cmd->patterns[i].u.bitmask.mask_size = mask_len;
708 pattern_cmd->patterns[i].u.bitmask.pattern_size =
709 wowlan->patterns[i].pattern_len;
710 }
711
712 cmd.data[0] = pattern_cmd;
713 err = iwl_mvm_send_cmd(mvm, &cmd);
714 kfree(pattern_cmd);
715 return err;
716 }
717
iwl_mvm_d3_reprogram(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * ap_sta)718 static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
719 struct ieee80211_sta *ap_sta)
720 {
721 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
722 struct ieee80211_chanctx_conf *ctx;
723 u8 chains_static, chains_dynamic;
724 struct cfg80211_chan_def chandef;
725 int ret, i;
726 struct iwl_binding_cmd_v1 binding_cmd = {};
727 struct iwl_time_quota_cmd quota_cmd = {};
728 struct iwl_time_quota_data *quota;
729 u32 status;
730
731 if (WARN_ON_ONCE(iwl_mvm_is_cdb_supported(mvm)))
732 return -EINVAL;
733
734 /* add back the PHY */
735 if (WARN_ON(!mvmvif->deflink.phy_ctxt))
736 return -EINVAL;
737
738 rcu_read_lock();
739 ctx = rcu_dereference(vif->bss_conf.chanctx_conf);
740 if (WARN_ON(!ctx)) {
741 rcu_read_unlock();
742 return -EINVAL;
743 }
744 chandef = ctx->def;
745 chains_static = ctx->rx_chains_static;
746 chains_dynamic = ctx->rx_chains_dynamic;
747 rcu_read_unlock();
748
749 ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->deflink.phy_ctxt, &chandef,
750 chains_static, chains_dynamic);
751 if (ret)
752 return ret;
753
754 /* add back the MAC */
755 mvmvif->uploaded = false;
756
757 if (WARN_ON(!vif->cfg.assoc))
758 return -EINVAL;
759
760 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
761 if (ret)
762 return ret;
763
764 /* add back binding - XXX refactor? */
765 binding_cmd.id_and_color =
766 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id,
767 mvmvif->deflink.phy_ctxt->color));
768 binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD);
769 binding_cmd.phy =
770 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id,
771 mvmvif->deflink.phy_ctxt->color));
772 binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
773 mvmvif->color));
774 for (i = 1; i < MAX_MACS_IN_BINDING; i++)
775 binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID);
776
777 status = 0;
778 ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD,
779 IWL_BINDING_CMD_SIZE_V1, &binding_cmd,
780 &status);
781 if (ret) {
782 IWL_ERR(mvm, "Failed to add binding: %d\n", ret);
783 return ret;
784 }
785
786 if (status) {
787 IWL_ERR(mvm, "Binding command failed: %u\n", status);
788 return -EIO;
789 }
790
791 ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false, 0);
792 if (ret)
793 return ret;
794 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->deflink.ap_sta_id],
795 ap_sta);
796
797 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
798 if (ret)
799 return ret;
800
801 /* and some quota */
802 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, 0);
803 quota->id_and_color =
804 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id,
805 mvmvif->deflink.phy_ctxt->color));
806 quota->quota = cpu_to_le32(IWL_MVM_MAX_QUOTA);
807 quota->max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA);
808
809 for (i = 1; i < MAX_BINDINGS; i++) {
810 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, i);
811 quota->id_and_color = cpu_to_le32(FW_CTXT_INVALID);
812 }
813
814 ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0,
815 iwl_mvm_quota_cmd_size(mvm), "a_cmd);
816 if (ret)
817 IWL_ERR(mvm, "Failed to send quota: %d\n", ret);
818
819 if (iwl_mvm_is_lar_supported(mvm) && iwl_mvm_init_fw_regd(mvm))
820 IWL_ERR(mvm, "Failed to initialize D3 LAR information\n");
821
822 return 0;
823 }
824
iwl_mvm_get_last_nonqos_seq(struct iwl_mvm * mvm,struct ieee80211_vif * vif)825 static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm,
826 struct ieee80211_vif *vif)
827 {
828 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
829 struct iwl_nonqos_seq_query_cmd query_cmd = {
830 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET),
831 .mac_id_n_color =
832 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
833 mvmvif->color)),
834 };
835 struct iwl_host_cmd cmd = {
836 .id = NON_QOS_TX_COUNTER_CMD,
837 .flags = CMD_WANT_SKB,
838 };
839 int err;
840 u32 size;
841
842 cmd.data[0] = &query_cmd;
843 cmd.len[0] = sizeof(query_cmd);
844
845 err = iwl_mvm_send_cmd(mvm, &cmd);
846 if (err)
847 return err;
848
849 size = iwl_rx_packet_payload_len(cmd.resp_pkt);
850 if (size < sizeof(__le16)) {
851 err = -EINVAL;
852 } else {
853 err = le16_to_cpup((__le16 *)cmd.resp_pkt->data);
854 /* firmware returns next, not last-used seqno */
855 err = (u16) (err - 0x10);
856 }
857
858 iwl_free_resp(&cmd);
859 return err;
860 }
861
iwl_mvm_set_last_nonqos_seq(struct iwl_mvm * mvm,struct ieee80211_vif * vif)862 void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
863 {
864 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
865 struct iwl_nonqos_seq_query_cmd query_cmd = {
866 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET),
867 .mac_id_n_color =
868 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
869 mvmvif->color)),
870 .value = cpu_to_le16(mvmvif->seqno),
871 };
872
873 /* return if called during restart, not resume from D3 */
874 if (!mvmvif->seqno_valid)
875 return;
876
877 mvmvif->seqno_valid = false;
878
879 if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0,
880 sizeof(query_cmd), &query_cmd))
881 IWL_ERR(mvm, "failed to set non-QoS seqno\n");
882 }
883
iwl_mvm_switch_to_d3(struct iwl_mvm * mvm)884 static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm)
885 {
886 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
887
888 iwl_mvm_stop_device(mvm);
889 /*
890 * Set the HW restart bit -- this is mostly true as we're
891 * going to load new firmware and reprogram that, though
892 * the reprogramming is going to be manual to avoid adding
893 * all the MACs that aren't support.
894 * We don't have to clear up everything though because the
895 * reprogramming is manual. When we resume, we'll actually
896 * go through a proper restart sequence again to switch
897 * back to the runtime firmware image.
898 */
899 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
900
901 /* the fw is reset, so all the keys are cleared */
902 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
903
904 mvm->ptk_ivlen = 0;
905 mvm->ptk_icvlen = 0;
906 mvm->ptk_ivlen = 0;
907 mvm->ptk_icvlen = 0;
908
909 return iwl_mvm_load_d3_fw(mvm);
910 }
911
912 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)913 iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm,
914 struct cfg80211_wowlan *wowlan,
915 struct iwl_wowlan_config_cmd *wowlan_config_cmd,
916 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
917 struct ieee80211_sta *ap_sta)
918 {
919 struct iwl_mvm_sta *mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
920
921 /* TODO: wowlan_config_cmd->wowlan_ba_teardown_tids */
922
923 wowlan_config_cmd->is_11n_connection =
924 ap_sta->deflink.ht_cap.ht_supported;
925 wowlan_config_cmd->flags = ENABLE_L3_FILTERING |
926 ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING;
927
928 if (iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_CONFIGURATION, 0) < 6) {
929 /* Query the last used seqno and set it */
930 int ret = iwl_mvm_get_last_nonqos_seq(mvm, vif);
931
932 if (ret < 0)
933 return ret;
934
935 wowlan_config_cmd->non_qos_seq = cpu_to_le16(ret);
936 }
937
938 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, wowlan_config_cmd);
939
940 if (wowlan->disconnect)
941 wowlan_config_cmd->wakeup_filter |=
942 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
943 IWL_WOWLAN_WAKEUP_LINK_CHANGE);
944 if (wowlan->magic_pkt)
945 wowlan_config_cmd->wakeup_filter |=
946 cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET);
947 if (wowlan->gtk_rekey_failure)
948 wowlan_config_cmd->wakeup_filter |=
949 cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
950 if (wowlan->eap_identity_req)
951 wowlan_config_cmd->wakeup_filter |=
952 cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ);
953 if (wowlan->four_way_handshake)
954 wowlan_config_cmd->wakeup_filter |=
955 cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
956 if (wowlan->n_patterns)
957 wowlan_config_cmd->wakeup_filter |=
958 cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH);
959
960 if (wowlan->rfkill_release)
961 wowlan_config_cmd->wakeup_filter |=
962 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
963
964 if (wowlan->tcp) {
965 /*
966 * Set the "link change" (really "link lost") flag as well
967 * since that implies losing the TCP connection.
968 */
969 wowlan_config_cmd->wakeup_filter |=
970 cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS |
971 IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE |
972 IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET |
973 IWL_WOWLAN_WAKEUP_LINK_CHANGE);
974 }
975
976 if (wowlan->any) {
977 wowlan_config_cmd->wakeup_filter |=
978 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
979 IWL_WOWLAN_WAKEUP_LINK_CHANGE |
980 IWL_WOWLAN_WAKEUP_RX_FRAME |
981 IWL_WOWLAN_WAKEUP_BCN_FILTERING);
982 }
983
984 return 0;
985 }
986
iwl_mvm_wowlan_config_key_params(struct iwl_mvm * mvm,struct ieee80211_vif * vif)987 static int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm,
988 struct ieee80211_vif *vif)
989 {
990 bool unified = fw_has_capa(&mvm->fw->ucode_capa,
991 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
992 struct wowlan_key_reprogram_data key_data = {};
993 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
994 int ret;
995 u8 cmd_ver;
996 size_t cmd_size;
997
998 if (!unified) {
999 /*
1000 * if we have to configure keys, call ieee80211_iter_keys(),
1001 * as we need non-atomic context in order to take the
1002 * required locks.
1003 */
1004 /*
1005 * Note that currently we don't use CMD_ASYNC in the iterator.
1006 * In case of key_data.configure_keys, all the configured
1007 * commands are SYNC, and iwl_mvm_wowlan_program_keys() will
1008 * take care of locking/unlocking mvm->mutex.
1009 */
1010 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_program_keys,
1011 &key_data);
1012
1013 if (key_data.error)
1014 return -EIO;
1015 }
1016
1017 ret = iwl_mvm_wowlan_config_rsc_tsc(mvm, vif);
1018 if (ret)
1019 return ret;
1020
1021 if (!fw_has_api(&mvm->fw->ucode_capa,
1022 IWL_UCODE_TLV_API_TKIP_MIC_KEYS)) {
1023 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TKIP_PARAM,
1024 IWL_FW_CMD_VER_UNKNOWN);
1025 struct wowlan_key_tkip_data tkip_data = {};
1026 int size;
1027
1028 if (ver == 2) {
1029 size = sizeof(tkip_data.tkip);
1030 tkip_data.tkip.sta_id =
1031 cpu_to_le32(mvmvif->deflink.ap_sta_id);
1032 } else if (ver == 1 || ver == IWL_FW_CMD_VER_UNKNOWN) {
1033 size = sizeof(struct iwl_wowlan_tkip_params_cmd_ver_1);
1034 } else {
1035 WARN_ON_ONCE(1);
1036 return -EINVAL;
1037 }
1038
1039 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_get_tkip_data,
1040 &tkip_data);
1041
1042 if (tkip_data.have_tkip_keys) {
1043 /* send relevant data according to CMD version */
1044 ret = iwl_mvm_send_cmd_pdu(mvm,
1045 WOWLAN_TKIP_PARAM,
1046 CMD_ASYNC, size,
1047 &tkip_data.tkip);
1048 if (ret)
1049 return ret;
1050 }
1051 }
1052
1053 /* configure rekey data only if offloaded rekey is supported (d3) */
1054 if (mvmvif->rekey_data.valid) {
1055 struct iwl_wowlan_kek_kck_material_cmd_v4 kek_kck_cmd = {};
1056 struct iwl_wowlan_kek_kck_material_cmd_v4 *_kek_kck_cmd =
1057 &kek_kck_cmd;
1058 struct wowlan_key_gtk_type_iter gtk_type_data = {
1059 .kek_kck_cmd = _kek_kck_cmd,
1060 };
1061
1062 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,
1063 WOWLAN_KEK_KCK_MATERIAL,
1064 IWL_FW_CMD_VER_UNKNOWN);
1065 if (WARN_ON(cmd_ver != 2 && cmd_ver != 3 && cmd_ver != 4 &&
1066 cmd_ver != IWL_FW_CMD_VER_UNKNOWN))
1067 return -EINVAL;
1068
1069 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_gtk_type_iter,
1070 >k_type_data);
1071
1072 memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck,
1073 mvmvif->rekey_data.kck_len);
1074 kek_kck_cmd.kck_len = cpu_to_le16(mvmvif->rekey_data.kck_len);
1075 memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek,
1076 mvmvif->rekey_data.kek_len);
1077 kek_kck_cmd.kek_len = cpu_to_le16(mvmvif->rekey_data.kek_len);
1078 kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr;
1079 kek_kck_cmd.akm = cpu_to_le32(mvmvif->rekey_data.akm);
1080 kek_kck_cmd.sta_id = cpu_to_le32(mvmvif->deflink.ap_sta_id);
1081
1082 if (cmd_ver == 4) {
1083 cmd_size = sizeof(struct iwl_wowlan_kek_kck_material_cmd_v4);
1084 } else {
1085 if (cmd_ver == 3)
1086 cmd_size =
1087 sizeof(struct iwl_wowlan_kek_kck_material_cmd_v3);
1088 else
1089 cmd_size =
1090 sizeof(struct iwl_wowlan_kek_kck_material_cmd_v2);
1091 /* skip the sta_id at the beginning */
1092 _kek_kck_cmd = (void *)
1093 ((u8 *)_kek_kck_cmd + sizeof(kek_kck_cmd.sta_id));
1094 }
1095
1096 IWL_DEBUG_WOWLAN(mvm, "setting akm %d\n",
1097 mvmvif->rekey_data.akm);
1098
1099 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_KEK_KCK_MATERIAL,
1100 CMD_ASYNC, cmd_size, _kek_kck_cmd);
1101 if (ret)
1102 return ret;
1103 }
1104
1105 return 0;
1106 }
1107
1108 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)1109 iwl_mvm_wowlan_config(struct iwl_mvm *mvm,
1110 struct cfg80211_wowlan *wowlan,
1111 struct iwl_wowlan_config_cmd *wowlan_config_cmd,
1112 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
1113 struct ieee80211_sta *ap_sta)
1114 {
1115 int ret;
1116 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1117 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1118
1119 mvm->offload_tid = wowlan_config_cmd->offloading_tid;
1120
1121 if (!unified_image) {
1122 ret = iwl_mvm_switch_to_d3(mvm);
1123 if (ret)
1124 return ret;
1125
1126 ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta);
1127 if (ret)
1128 return ret;
1129 }
1130
1131 /*
1132 * This needs to be unlocked due to lock ordering
1133 * constraints. Since we're in the suspend path
1134 * that isn't really a problem though.
1135 */
1136 mutex_unlock(&mvm->mutex);
1137 ret = iwl_mvm_wowlan_config_key_params(mvm, vif);
1138 mutex_lock(&mvm->mutex);
1139 if (ret)
1140 return ret;
1141
1142 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0,
1143 sizeof(*wowlan_config_cmd),
1144 wowlan_config_cmd);
1145 if (ret)
1146 return ret;
1147
1148 if (fw_has_api(&mvm->fw->ucode_capa,
1149 IWL_UCODE_TLV_API_WOWLAN_TCP_SYN_WAKE))
1150 ret = iwl_mvm_send_patterns(mvm, vif, wowlan);
1151 else
1152 ret = iwl_mvm_send_patterns_v1(mvm, wowlan);
1153 if (ret)
1154 return ret;
1155
1156 return iwl_mvm_send_proto_offload(mvm, vif, false, true, 0);
1157 }
1158
1159 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)1160 iwl_mvm_netdetect_config(struct iwl_mvm *mvm,
1161 struct cfg80211_wowlan *wowlan,
1162 struct cfg80211_sched_scan_request *nd_config,
1163 struct ieee80211_vif *vif)
1164 {
1165 int ret;
1166 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1167 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1168
1169 if (!unified_image) {
1170 ret = iwl_mvm_switch_to_d3(mvm);
1171 if (ret)
1172 return ret;
1173 } else {
1174 /* In theory, we wouldn't have to stop a running sched
1175 * scan in order to start another one (for
1176 * net-detect). But in practice this doesn't seem to
1177 * work properly, so stop any running sched_scan now.
1178 */
1179 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
1180 if (ret)
1181 return ret;
1182 }
1183
1184 ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies,
1185 IWL_MVM_SCAN_NETDETECT);
1186 if (ret)
1187 return ret;
1188
1189 if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels))
1190 return -EBUSY;
1191
1192 /* save the sched scan matchsets... */
1193 if (nd_config->n_match_sets) {
1194 mvm->nd_match_sets = kmemdup(nd_config->match_sets,
1195 sizeof(*nd_config->match_sets) *
1196 nd_config->n_match_sets,
1197 GFP_KERNEL);
1198 if (mvm->nd_match_sets)
1199 mvm->n_nd_match_sets = nd_config->n_match_sets;
1200 }
1201
1202 /* ...and the sched scan channels for later reporting */
1203 mvm->nd_channels = kmemdup(nd_config->channels,
1204 sizeof(*nd_config->channels) *
1205 nd_config->n_channels,
1206 GFP_KERNEL);
1207 if (mvm->nd_channels)
1208 mvm->n_nd_channels = nd_config->n_channels;
1209
1210 return 0;
1211 }
1212
iwl_mvm_free_nd(struct iwl_mvm * mvm)1213 static void iwl_mvm_free_nd(struct iwl_mvm *mvm)
1214 {
1215 kfree(mvm->nd_match_sets);
1216 mvm->nd_match_sets = NULL;
1217 mvm->n_nd_match_sets = 0;
1218 kfree(mvm->nd_channels);
1219 mvm->nd_channels = NULL;
1220 mvm->n_nd_channels = 0;
1221 }
1222
__iwl_mvm_suspend(struct ieee80211_hw * hw,struct cfg80211_wowlan * wowlan,bool test)1223 static int __iwl_mvm_suspend(struct ieee80211_hw *hw,
1224 struct cfg80211_wowlan *wowlan,
1225 bool test)
1226 {
1227 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1228 struct ieee80211_vif *vif = NULL;
1229 struct iwl_mvm_vif *mvmvif = NULL;
1230 struct ieee80211_sta *ap_sta = NULL;
1231 struct iwl_d3_manager_config d3_cfg_cmd_data = {
1232 /*
1233 * Program the minimum sleep time to 10 seconds, as many
1234 * platforms have issues processing a wakeup signal while
1235 * still being in the process of suspending.
1236 */
1237 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000),
1238 };
1239 struct iwl_host_cmd d3_cfg_cmd = {
1240 .id = D3_CONFIG_CMD,
1241 .flags = CMD_WANT_SKB | CMD_SEND_IN_D3,
1242 .data[0] = &d3_cfg_cmd_data,
1243 .len[0] = sizeof(d3_cfg_cmd_data),
1244 };
1245 int ret;
1246 int len __maybe_unused;
1247 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1248 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1249
1250 if (!wowlan) {
1251 /*
1252 * mac80211 shouldn't get here, but for D3 test
1253 * it doesn't warrant a warning
1254 */
1255 WARN_ON(!test);
1256 return -EINVAL;
1257 }
1258
1259 mutex_lock(&mvm->mutex);
1260
1261 set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
1262
1263 synchronize_net();
1264
1265 vif = iwl_mvm_get_bss_vif(mvm);
1266 if (IS_ERR_OR_NULL(vif)) {
1267 ret = 1;
1268 goto out_noreset;
1269 }
1270
1271 mvmvif = iwl_mvm_vif_from_mac80211(vif);
1272
1273 if (mvmvif->deflink.ap_sta_id == IWL_MVM_INVALID_STA) {
1274 /* if we're not associated, this must be netdetect */
1275 if (!wowlan->nd_config) {
1276 ret = 1;
1277 goto out_noreset;
1278 }
1279
1280 ret = iwl_mvm_netdetect_config(
1281 mvm, wowlan, wowlan->nd_config, vif);
1282 if (ret)
1283 goto out;
1284
1285 mvm->net_detect = true;
1286 } else {
1287 struct iwl_wowlan_config_cmd wowlan_config_cmd = {};
1288
1289 wowlan_config_cmd.sta_id = mvmvif->deflink.ap_sta_id;
1290
1291 ap_sta = rcu_dereference_protected(
1292 mvm->fw_id_to_mac_id[mvmvif->deflink.ap_sta_id],
1293 lockdep_is_held(&mvm->mutex));
1294 if (IS_ERR_OR_NULL(ap_sta)) {
1295 ret = -EINVAL;
1296 goto out_noreset;
1297 }
1298
1299 ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1300 vif, mvmvif, ap_sta);
1301 if (ret)
1302 goto out_noreset;
1303 ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1304 vif, mvmvif, ap_sta);
1305 if (ret)
1306 goto out;
1307
1308 mvm->net_detect = false;
1309 }
1310
1311 ret = iwl_mvm_power_update_device(mvm);
1312 if (ret)
1313 goto out;
1314
1315 ret = iwl_mvm_power_update_mac(mvm);
1316 if (ret)
1317 goto out;
1318
1319 #ifdef CONFIG_IWLWIFI_DEBUGFS
1320 if (mvm->d3_wake_sysassert)
1321 d3_cfg_cmd_data.wakeup_flags |=
1322 cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR);
1323 #endif
1324
1325 /*
1326 * Prior to 9000 device family the driver needs to stop the dbg
1327 * recording before entering D3. In later devices the FW stops the
1328 * recording automatically.
1329 */
1330 if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_9000)
1331 iwl_fw_dbg_stop_restart_recording(&mvm->fwrt, NULL, true);
1332
1333 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_D3;
1334
1335 /* must be last -- this switches firmware state */
1336 ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd);
1337 if (ret)
1338 goto out;
1339 #ifdef CONFIG_IWLWIFI_DEBUGFS
1340 len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt);
1341 if (len >= sizeof(u32)) {
1342 mvm->d3_test_pme_ptr =
1343 le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data);
1344 }
1345 #endif
1346 iwl_free_resp(&d3_cfg_cmd);
1347
1348 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1349
1350 ret = iwl_trans_d3_suspend(mvm->trans, test, !unified_image);
1351 out:
1352 if (ret < 0) {
1353 iwl_mvm_free_nd(mvm);
1354
1355 if (!unified_image) {
1356 if (mvm->fw_restart > 0) {
1357 mvm->fw_restart--;
1358 ieee80211_restart_hw(mvm->hw);
1359 }
1360 }
1361
1362 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
1363 }
1364 out_noreset:
1365 mutex_unlock(&mvm->mutex);
1366
1367 return ret;
1368 }
1369
iwl_mvm_suspend(struct ieee80211_hw * hw,struct cfg80211_wowlan * wowlan)1370 int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
1371 {
1372 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1373
1374 iwl_mvm_pause_tcm(mvm, true);
1375
1376 iwl_fw_runtime_suspend(&mvm->fwrt);
1377
1378 return __iwl_mvm_suspend(hw, wowlan, false);
1379 }
1380
1381 struct iwl_multicast_key_data {
1382 u8 key[WOWLAN_KEY_MAX_SIZE];
1383 u8 len;
1384 u8 flags;
1385 u8 id;
1386 u8 ipn[6];
1387 };
1388
1389 /* converted data from the different status responses */
1390 struct iwl_wowlan_status_data {
1391 u64 replay_ctr;
1392 u32 num_of_gtk_rekeys;
1393 u32 received_beacons;
1394 u32 wakeup_reasons;
1395 u32 wake_packet_length;
1396 u32 wake_packet_bufsize;
1397 u16 pattern_number;
1398 u16 non_qos_seq_ctr;
1399 u16 qos_seq_ctr[8];
1400 u8 tid_tear_down;
1401
1402 struct {
1403 /* including RX MIC key for TKIP */
1404 u8 key[WOWLAN_KEY_MAX_SIZE];
1405 u8 len;
1406 u8 flags;
1407 u8 id;
1408 } gtk[WOWLAN_GTK_KEYS_NUM];
1409
1410 struct {
1411 /*
1412 * We store both the TKIP and AES representations
1413 * coming from the firmware because we decode the
1414 * data from there before we iterate the keys and
1415 * know which one we need.
1416 */
1417 struct {
1418 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT];
1419 } tkip, aes;
1420
1421 /*
1422 * We use -1 for when we have valid data but don't know
1423 * the key ID from firmware, and thus it needs to be
1424 * installed with the last key (depending on rekeying).
1425 */
1426 s8 key_id;
1427 bool valid;
1428 } gtk_seq[2];
1429
1430 struct {
1431 /* Same as above */
1432 struct {
1433 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT];
1434 u64 tx_pn;
1435 } tkip, aes;
1436 } ptk;
1437
1438 struct iwl_multicast_key_data igtk;
1439
1440 u8 *wake_packet;
1441 };
1442
iwl_mvm_report_wakeup_reasons(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_wowlan_status_data * status)1443 static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm,
1444 struct ieee80211_vif *vif,
1445 struct iwl_wowlan_status_data *status)
1446 {
1447 struct sk_buff *pkt = NULL;
1448 struct cfg80211_wowlan_wakeup wakeup = {
1449 .pattern_idx = -1,
1450 };
1451 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
1452 u32 reasons = status->wakeup_reasons;
1453
1454 if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
1455 wakeup_report = NULL;
1456 goto report;
1457 }
1458
1459 pm_wakeup_event(mvm->dev, 0);
1460
1461 if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET)
1462 wakeup.magic_pkt = true;
1463
1464 if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN)
1465 wakeup.pattern_idx =
1466 status->pattern_number;
1467
1468 if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1469 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH))
1470 wakeup.disconnect = true;
1471
1472 if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)
1473 wakeup.gtk_rekey_failure = true;
1474
1475 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
1476 wakeup.rfkill_release = true;
1477
1478 if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST)
1479 wakeup.eap_identity_req = true;
1480
1481 if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE)
1482 wakeup.four_way_handshake = true;
1483
1484 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS)
1485 wakeup.tcp_connlost = true;
1486
1487 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE)
1488 wakeup.tcp_nomoretokens = true;
1489
1490 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET)
1491 wakeup.tcp_match = true;
1492
1493 if (status->wake_packet) {
1494 int pktsize = status->wake_packet_bufsize;
1495 int pktlen = status->wake_packet_length;
1496 const u8 *pktdata = status->wake_packet;
1497 const struct ieee80211_hdr *hdr = (const void *)pktdata;
1498 int truncated = pktlen - pktsize;
1499
1500 /* this would be a firmware bug */
1501 if (WARN_ON_ONCE(truncated < 0))
1502 truncated = 0;
1503
1504 if (ieee80211_is_data(hdr->frame_control)) {
1505 int hdrlen = ieee80211_hdrlen(hdr->frame_control);
1506 int ivlen = 0, icvlen = 4; /* also FCS */
1507
1508 pkt = alloc_skb(pktsize, GFP_KERNEL);
1509 if (!pkt)
1510 goto report;
1511
1512 skb_put_data(pkt, pktdata, hdrlen);
1513 pktdata += hdrlen;
1514 pktsize -= hdrlen;
1515
1516 if (ieee80211_has_protected(hdr->frame_control)) {
1517 /*
1518 * This is unlocked and using gtk_i(c)vlen,
1519 * but since everything is under RTNL still
1520 * that's not really a problem - changing
1521 * it would be difficult.
1522 */
1523 if (is_multicast_ether_addr(hdr->addr1)) {
1524 ivlen = mvm->gtk_ivlen;
1525 icvlen += mvm->gtk_icvlen;
1526 } else {
1527 ivlen = mvm->ptk_ivlen;
1528 icvlen += mvm->ptk_icvlen;
1529 }
1530 }
1531
1532 /* if truncated, FCS/ICV is (partially) gone */
1533 if (truncated >= icvlen) {
1534 icvlen = 0;
1535 truncated -= icvlen;
1536 } else {
1537 icvlen -= truncated;
1538 truncated = 0;
1539 }
1540
1541 pktsize -= ivlen + icvlen;
1542 pktdata += ivlen;
1543
1544 skb_put_data(pkt, pktdata, pktsize);
1545
1546 if (ieee80211_data_to_8023(pkt, vif->addr, vif->type))
1547 goto report;
1548 wakeup.packet = pkt->data;
1549 wakeup.packet_present_len = pkt->len;
1550 wakeup.packet_len = pkt->len - truncated;
1551 wakeup.packet_80211 = false;
1552 } else {
1553 int fcslen = 4;
1554
1555 if (truncated >= 4) {
1556 truncated -= 4;
1557 fcslen = 0;
1558 } else {
1559 fcslen -= truncated;
1560 truncated = 0;
1561 }
1562 pktsize -= fcslen;
1563 wakeup.packet = status->wake_packet;
1564 wakeup.packet_present_len = pktsize;
1565 wakeup.packet_len = pktlen - truncated;
1566 wakeup.packet_80211 = true;
1567 }
1568 }
1569
1570 report:
1571 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
1572 kfree_skb(pkt);
1573 }
1574
iwl_mvm_le64_to_aes_seq(__le64 le_pn,struct ieee80211_key_seq * seq)1575 static void iwl_mvm_le64_to_aes_seq(__le64 le_pn, struct ieee80211_key_seq *seq)
1576 {
1577 u64 pn = le64_to_cpu(le_pn);
1578
1579 seq->ccmp.pn[0] = pn >> 40;
1580 seq->ccmp.pn[1] = pn >> 32;
1581 seq->ccmp.pn[2] = pn >> 24;
1582 seq->ccmp.pn[3] = pn >> 16;
1583 seq->ccmp.pn[4] = pn >> 8;
1584 seq->ccmp.pn[5] = pn;
1585 }
1586
iwl_mvm_aes_sc_to_seq(struct aes_sc * sc,struct ieee80211_key_seq * seq)1587 static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc,
1588 struct ieee80211_key_seq *seq)
1589 {
1590 iwl_mvm_le64_to_aes_seq(sc->pn, seq);
1591 }
1592
iwl_mvm_le64_to_tkip_seq(__le64 le_pn,struct ieee80211_key_seq * seq)1593 static void iwl_mvm_le64_to_tkip_seq(__le64 le_pn, struct ieee80211_key_seq *seq)
1594 {
1595 u64 pn = le64_to_cpu(le_pn);
1596
1597 seq->tkip.iv16 = (u16)pn;
1598 seq->tkip.iv32 = (u32)(pn >> 16);
1599 }
1600
iwl_mvm_tkip_sc_to_seq(struct tkip_sc * sc,struct ieee80211_key_seq * seq)1601 static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc,
1602 struct ieee80211_key_seq *seq)
1603 {
1604 seq->tkip.iv32 = le32_to_cpu(sc->iv32);
1605 seq->tkip.iv16 = le16_to_cpu(sc->iv16);
1606 }
1607
iwl_mvm_set_key_rx_seq_tids(struct ieee80211_key_conf * key,struct ieee80211_key_seq * seq)1608 static void iwl_mvm_set_key_rx_seq_tids(struct ieee80211_key_conf *key,
1609 struct ieee80211_key_seq *seq)
1610 {
1611 int tid;
1612
1613 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++)
1614 ieee80211_set_key_rx_seq(key, tid, &seq[tid]);
1615 }
1616
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)1617 static void iwl_mvm_set_aes_ptk_rx_seq(struct iwl_mvm *mvm,
1618 struct iwl_wowlan_status_data *status,
1619 struct ieee80211_sta *sta,
1620 struct ieee80211_key_conf *key)
1621 {
1622 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1623 struct iwl_mvm_key_pn *ptk_pn;
1624 int tid;
1625
1626 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.aes.seq);
1627
1628 if (!iwl_mvm_has_new_rx_api(mvm))
1629 return;
1630
1631
1632 rcu_read_lock();
1633 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]);
1634 if (WARN_ON(!ptk_pn)) {
1635 rcu_read_unlock();
1636 return;
1637 }
1638
1639 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1640 int i;
1641
1642 for (i = 1; i < mvm->trans->num_rx_queues; i++)
1643 memcpy(ptk_pn->q[i].pn[tid],
1644 status->ptk.aes.seq[tid].ccmp.pn,
1645 IEEE80211_CCMP_PN_LEN);
1646 }
1647 rcu_read_unlock();
1648 }
1649
iwl_mvm_convert_key_counters(struct iwl_wowlan_status_data * status,union iwl_all_tsc_rsc * sc)1650 static void iwl_mvm_convert_key_counters(struct iwl_wowlan_status_data *status,
1651 union iwl_all_tsc_rsc *sc)
1652 {
1653 int i;
1654
1655 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT);
1656 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC);
1657
1658 /* GTK RX counters */
1659 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1660 iwl_mvm_tkip_sc_to_seq(&sc->tkip.multicast_rsc[i],
1661 &status->gtk_seq[0].tkip.seq[i]);
1662 iwl_mvm_aes_sc_to_seq(&sc->aes.multicast_rsc[i],
1663 &status->gtk_seq[0].aes.seq[i]);
1664 }
1665 status->gtk_seq[0].valid = true;
1666 status->gtk_seq[0].key_id = -1;
1667
1668 /* PTK TX counter */
1669 status->ptk.tkip.tx_pn = (u64)le16_to_cpu(sc->tkip.tsc.iv16) |
1670 ((u64)le32_to_cpu(sc->tkip.tsc.iv32) << 16);
1671 status->ptk.aes.tx_pn = le64_to_cpu(sc->aes.tsc.pn);
1672
1673 /* PTK RX counters */
1674 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1675 iwl_mvm_tkip_sc_to_seq(&sc->tkip.unicast_rsc[i],
1676 &status->ptk.tkip.seq[i]);
1677 iwl_mvm_aes_sc_to_seq(&sc->aes.unicast_rsc[i],
1678 &status->ptk.aes.seq[i]);
1679 }
1680 }
1681
1682 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)1683 iwl_mvm_convert_key_counters_v5_gtk_seq(struct iwl_wowlan_status_data *status,
1684 struct iwl_wowlan_all_rsc_tsc_v5 *sc,
1685 unsigned int idx, unsigned int key_id)
1686 {
1687 int tid;
1688
1689 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1690 iwl_mvm_le64_to_tkip_seq(sc->mcast_rsc[idx][tid],
1691 &status->gtk_seq[idx].tkip.seq[tid]);
1692 iwl_mvm_le64_to_aes_seq(sc->mcast_rsc[idx][tid],
1693 &status->gtk_seq[idx].aes.seq[tid]);
1694 }
1695
1696 status->gtk_seq[idx].valid = true;
1697 status->gtk_seq[idx].key_id = key_id;
1698 }
1699
1700 static void
iwl_mvm_convert_key_counters_v5(struct iwl_wowlan_status_data * status,struct iwl_wowlan_all_rsc_tsc_v5 * sc)1701 iwl_mvm_convert_key_counters_v5(struct iwl_wowlan_status_data *status,
1702 struct iwl_wowlan_all_rsc_tsc_v5 *sc)
1703 {
1704 int i, tid;
1705
1706 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT);
1707 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC);
1708 BUILD_BUG_ON(ARRAY_SIZE(sc->mcast_rsc) != ARRAY_SIZE(status->gtk_seq));
1709
1710 /* GTK RX counters */
1711 for (i = 0; i < ARRAY_SIZE(sc->mcast_key_id_map); i++) {
1712 u8 entry = sc->mcast_key_id_map[i];
1713
1714 if (entry < ARRAY_SIZE(sc->mcast_rsc))
1715 iwl_mvm_convert_key_counters_v5_gtk_seq(status, sc,
1716 entry, i);
1717 }
1718
1719 /* PTK TX counters not needed, assigned in device */
1720
1721 /* PTK RX counters */
1722 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1723 iwl_mvm_le64_to_tkip_seq(sc->ucast_rsc[tid],
1724 &status->ptk.tkip.seq[tid]);
1725 iwl_mvm_le64_to_aes_seq(sc->ucast_rsc[tid],
1726 &status->ptk.aes.seq[tid]);
1727 }
1728 }
1729
iwl_mvm_set_key_rx_seq_idx(struct ieee80211_key_conf * key,struct iwl_wowlan_status_data * status,int idx)1730 static void iwl_mvm_set_key_rx_seq_idx(struct ieee80211_key_conf *key,
1731 struct iwl_wowlan_status_data *status,
1732 int idx)
1733 {
1734 switch (key->cipher) {
1735 case WLAN_CIPHER_SUITE_CCMP:
1736 case WLAN_CIPHER_SUITE_GCMP:
1737 case WLAN_CIPHER_SUITE_GCMP_256:
1738 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].aes.seq);
1739 break;
1740 case WLAN_CIPHER_SUITE_TKIP:
1741 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].tkip.seq);
1742 break;
1743 default:
1744 WARN_ON(1);
1745 }
1746 }
1747
iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf * key,struct iwl_wowlan_status_data * status,bool installed)1748 static void iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf *key,
1749 struct iwl_wowlan_status_data *status,
1750 bool installed)
1751 {
1752 int i;
1753
1754 for (i = 0; i < ARRAY_SIZE(status->gtk_seq); i++) {
1755 if (!status->gtk_seq[i].valid)
1756 continue;
1757
1758 /* Handle the case where we know the key ID */
1759 if (status->gtk_seq[i].key_id == key->keyidx) {
1760 s8 new_key_id = -1;
1761
1762 if (status->num_of_gtk_rekeys)
1763 new_key_id = status->gtk[0].flags &
1764 IWL_WOWLAN_GTK_IDX_MASK;
1765
1766 /* Don't install a new key's value to an old key */
1767 if (new_key_id != key->keyidx)
1768 iwl_mvm_set_key_rx_seq_idx(key, status, i);
1769 continue;
1770 }
1771
1772 /* handle the case where we didn't, last key only */
1773 if (status->gtk_seq[i].key_id == -1 &&
1774 (!status->num_of_gtk_rekeys || installed))
1775 iwl_mvm_set_key_rx_seq_idx(key, status, i);
1776 }
1777 }
1778
1779 struct iwl_mvm_d3_gtk_iter_data {
1780 struct iwl_mvm *mvm;
1781 struct iwl_wowlan_status_data *status;
1782 u32 gtk_cipher, igtk_cipher;
1783 bool unhandled_cipher, igtk_support;
1784 int num_keys;
1785 };
1786
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)1787 static void iwl_mvm_d3_find_last_keys(struct ieee80211_hw *hw,
1788 struct ieee80211_vif *vif,
1789 struct ieee80211_sta *sta,
1790 struct ieee80211_key_conf *key,
1791 void *_data)
1792 {
1793 struct iwl_mvm_d3_gtk_iter_data *data = _data;
1794
1795 if (data->unhandled_cipher)
1796 return;
1797
1798 switch (key->cipher) {
1799 case WLAN_CIPHER_SUITE_WEP40:
1800 case WLAN_CIPHER_SUITE_WEP104:
1801 /* ignore WEP completely, nothing to do */
1802 return;
1803 case WLAN_CIPHER_SUITE_CCMP:
1804 case WLAN_CIPHER_SUITE_GCMP:
1805 case WLAN_CIPHER_SUITE_GCMP_256:
1806 case WLAN_CIPHER_SUITE_TKIP:
1807 /* we support these */
1808 data->gtk_cipher = key->cipher;
1809 break;
1810 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
1811 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
1812 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
1813 case WLAN_CIPHER_SUITE_AES_CMAC:
1814 /* we support these */
1815 if (data->igtk_support &&
1816 (key->keyidx == 4 || key->keyidx == 5)) {
1817 data->igtk_cipher = key->cipher;
1818 } else {
1819 data->unhandled_cipher = true;
1820 return;
1821 }
1822 break;
1823 default:
1824 /* everything else - disconnect from AP */
1825 data->unhandled_cipher = true;
1826 return;
1827 }
1828
1829 data->num_keys++;
1830 }
1831
1832 static void
iwl_mvm_d3_set_igtk_bigtk_ipn(const struct iwl_multicast_key_data * key,struct ieee80211_key_seq * seq,u32 cipher)1833 iwl_mvm_d3_set_igtk_bigtk_ipn(const struct iwl_multicast_key_data *key,
1834 struct ieee80211_key_seq *seq, u32 cipher)
1835 {
1836 switch (cipher) {
1837 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
1838 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
1839 BUILD_BUG_ON(sizeof(seq->aes_gmac.pn) != sizeof(key->ipn));
1840 memcpy(seq->aes_gmac.pn, key->ipn, sizeof(seq->aes_gmac.pn));
1841 break;
1842 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
1843 BUILD_BUG_ON(sizeof(seq->aes_cmac.pn) != sizeof(key->ipn));
1844 memcpy(seq->aes_cmac.pn, key->ipn, sizeof(seq->aes_cmac.pn));
1845 break;
1846 }
1847 }
1848
iwl_mvm_d3_update_keys(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key,void * _data)1849 static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw,
1850 struct ieee80211_vif *vif,
1851 struct ieee80211_sta *sta,
1852 struct ieee80211_key_conf *key,
1853 void *_data)
1854 {
1855 struct iwl_mvm_d3_gtk_iter_data *data = _data;
1856 struct iwl_wowlan_status_data *status = data->status;
1857 s8 keyidx;
1858
1859 if (data->unhandled_cipher)
1860 return;
1861
1862 switch (key->cipher) {
1863 case WLAN_CIPHER_SUITE_WEP40:
1864 case WLAN_CIPHER_SUITE_WEP104:
1865 /* ignore WEP completely, nothing to do */
1866 return;
1867 case WLAN_CIPHER_SUITE_CCMP:
1868 case WLAN_CIPHER_SUITE_GCMP:
1869 case WLAN_CIPHER_SUITE_GCMP_256:
1870 if (sta) {
1871 atomic64_set(&key->tx_pn, status->ptk.aes.tx_pn);
1872 iwl_mvm_set_aes_ptk_rx_seq(data->mvm, status, sta, key);
1873 return;
1874 }
1875 fallthrough;
1876 case WLAN_CIPHER_SUITE_TKIP:
1877 if (sta) {
1878 atomic64_set(&key->tx_pn, status->ptk.tkip.tx_pn);
1879 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.tkip.seq);
1880 return;
1881 }
1882 keyidx = key->keyidx;
1883 /* The current key is always sent by the FW, even if it wasn't
1884 * rekeyed during D3.
1885 * We remove an existing key if it has the same index as
1886 * a new key
1887 */
1888 if (status->num_of_gtk_rekeys &&
1889 ((status->gtk[0].len && keyidx == status->gtk[0].id) ||
1890 (status->gtk[1].len && keyidx == status->gtk[1].id))) {
1891 ieee80211_remove_key(key);
1892 } else {
1893 iwl_mvm_set_key_rx_seq(key, data->status, false);
1894 }
1895 break;
1896 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
1897 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
1898 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
1899 case WLAN_CIPHER_SUITE_AES_CMAC:
1900 if (key->keyidx == 4 || key->keyidx == 5) {
1901 /* remove rekeyed key */
1902 if (status->num_of_gtk_rekeys) {
1903 ieee80211_remove_key(key);
1904 } else {
1905 struct ieee80211_key_seq seq;
1906
1907 iwl_mvm_d3_set_igtk_bigtk_ipn(&status->igtk,
1908 &seq,
1909 key->cipher);
1910 ieee80211_set_key_rx_seq(key, 0, &seq);
1911 }
1912 }
1913 }
1914 }
1915
iwl_mvm_gtk_rekey(struct iwl_wowlan_status_data * status,struct ieee80211_vif * vif,struct iwl_mvm * mvm,u32 gtk_cipher)1916 static bool iwl_mvm_gtk_rekey(struct iwl_wowlan_status_data *status,
1917 struct ieee80211_vif *vif,
1918 struct iwl_mvm *mvm, u32 gtk_cipher)
1919 {
1920 int i;
1921 struct ieee80211_key_conf *key;
1922 struct {
1923 struct ieee80211_key_conf conf;
1924 u8 key[32];
1925 } conf = {
1926 .conf.cipher = gtk_cipher,
1927 };
1928
1929 BUILD_BUG_ON(WLAN_KEY_LEN_CCMP != WLAN_KEY_LEN_GCMP);
1930 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_CCMP);
1931 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_GCMP_256);
1932 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_TKIP);
1933 BUILD_BUG_ON(sizeof(conf.key) < sizeof(status->gtk[0].key));
1934
1935 switch (gtk_cipher) {
1936 case WLAN_CIPHER_SUITE_CCMP:
1937 case WLAN_CIPHER_SUITE_GCMP:
1938 conf.conf.keylen = WLAN_KEY_LEN_CCMP;
1939 break;
1940 case WLAN_CIPHER_SUITE_GCMP_256:
1941 conf.conf.keylen = WLAN_KEY_LEN_GCMP_256;
1942 break;
1943 case WLAN_CIPHER_SUITE_TKIP:
1944 conf.conf.keylen = WLAN_KEY_LEN_TKIP;
1945 break;
1946 default:
1947 WARN_ON(1);
1948 }
1949
1950 for (i = 0; i < ARRAY_SIZE(status->gtk); i++) {
1951 if (!status->gtk[i].len)
1952 continue;
1953
1954 conf.conf.keyidx = status->gtk[i].id;
1955 IWL_DEBUG_WOWLAN(mvm,
1956 "Received from FW GTK cipher %d, key index %d\n",
1957 conf.conf.cipher, conf.conf.keyidx);
1958 memcpy(conf.conf.key, status->gtk[i].key,
1959 sizeof(status->gtk[i].key));
1960
1961 key = ieee80211_gtk_rekey_add(vif, &conf.conf);
1962 if (IS_ERR(key))
1963 return false;
1964 iwl_mvm_set_key_rx_seq_idx(key, status, i);
1965 }
1966
1967 return true;
1968 }
1969
1970 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)1971 iwl_mvm_d3_igtk_bigtk_rekey_add(struct iwl_wowlan_status_data *status,
1972 struct ieee80211_vif *vif, u32 cipher,
1973 struct iwl_multicast_key_data *key_data)
1974 {
1975 struct ieee80211_key_conf *key_config;
1976 struct {
1977 struct ieee80211_key_conf conf;
1978 u8 key[WOWLAN_KEY_MAX_SIZE];
1979 } conf = {
1980 .conf.cipher = cipher,
1981 .conf.keyidx = key_data->id,
1982 };
1983 struct ieee80211_key_seq seq;
1984
1985 if (!key_data->len)
1986 return true;
1987
1988 iwl_mvm_d3_set_igtk_bigtk_ipn(key_data, &seq, conf.conf.cipher);
1989
1990 switch (cipher) {
1991 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
1992 conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_128;
1993 break;
1994 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
1995 conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_256;
1996 break;
1997 case WLAN_CIPHER_SUITE_AES_CMAC:
1998 conf.conf.keylen = WLAN_KEY_LEN_AES_CMAC;
1999 break;
2000 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
2001 conf.conf.keylen = WLAN_KEY_LEN_BIP_CMAC_256;
2002 break;
2003 default:
2004 WARN_ON(1);
2005 }
2006 BUILD_BUG_ON(sizeof(conf.key) < sizeof(key_data->key));
2007 memcpy(conf.conf.key, key_data->key, conf.conf.keylen);
2008
2009 key_config = ieee80211_gtk_rekey_add(vif, &conf.conf);
2010 if (IS_ERR(key_config))
2011 return false;
2012 ieee80211_set_key_rx_seq(key_config, 0, &seq);
2013
2014 if (key_config->keyidx == 4 || key_config->keyidx == 5) {
2015 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2016 int link_id = vif->active_links ? __ffs(vif->active_links) : 0;
2017 struct iwl_mvm_vif_link_info *mvm_link =
2018 mvmvif->link[link_id];
2019
2020 mvm_link->igtk = key_config;
2021 }
2022
2023 return true;
2024 }
2025
iwl_mvm_lookup_wowlan_status_ver(struct iwl_mvm * mvm)2026 static int iwl_mvm_lookup_wowlan_status_ver(struct iwl_mvm *mvm)
2027 {
2028 u8 notif_ver;
2029
2030 if (!fw_has_api(&mvm->fw->ucode_capa,
2031 IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL))
2032 return 6;
2033
2034 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */
2035 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP,
2036 WOWLAN_GET_STATUSES, 0);
2037 if (!notif_ver)
2038 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
2039 WOWLAN_GET_STATUSES, 7);
2040
2041 return notif_ver;
2042 }
2043
iwl_mvm_setup_connection_keep(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_wowlan_status_data * status)2044 static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm,
2045 struct ieee80211_vif *vif,
2046 struct iwl_wowlan_status_data *status)
2047 {
2048 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2049 struct iwl_mvm_d3_gtk_iter_data gtkdata = {
2050 .mvm = mvm,
2051 .status = status,
2052 };
2053 u32 disconnection_reasons =
2054 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
2055 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH;
2056
2057 if (!status || !vif->bss_conf.bssid)
2058 return false;
2059
2060 if (status->wakeup_reasons & disconnection_reasons)
2061 return false;
2062
2063 if (iwl_mvm_lookup_wowlan_status_ver(mvm) > 6 ||
2064 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
2065 WOWLAN_INFO_NOTIFICATION,
2066 0))
2067 gtkdata.igtk_support = true;
2068
2069 /* find last GTK that we used initially, if any */
2070 ieee80211_iter_keys(mvm->hw, vif,
2071 iwl_mvm_d3_find_last_keys, >kdata);
2072 /* not trying to keep connections with MFP/unhandled ciphers */
2073 if (gtkdata.unhandled_cipher)
2074 return false;
2075 if (!gtkdata.num_keys)
2076 goto out;
2077
2078 /*
2079 * invalidate all other GTKs that might still exist and update
2080 * the one that we used
2081 */
2082 ieee80211_iter_keys(mvm->hw, vif,
2083 iwl_mvm_d3_update_keys, >kdata);
2084
2085 if (status->num_of_gtk_rekeys) {
2086 __be64 replay_ctr = cpu_to_be64(status->replay_ctr);
2087
2088 IWL_DEBUG_WOWLAN(mvm, "num of GTK rekeying %d\n",
2089 status->num_of_gtk_rekeys);
2090
2091 if (!iwl_mvm_gtk_rekey(status, vif, mvm, gtkdata.gtk_cipher))
2092 return false;
2093
2094 if (!iwl_mvm_d3_igtk_bigtk_rekey_add(status, vif,
2095 gtkdata.igtk_cipher,
2096 &status->igtk))
2097 return false;
2098
2099 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid,
2100 (void *)&replay_ctr, GFP_KERNEL);
2101 }
2102
2103 out:
2104 if (iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP,
2105 WOWLAN_GET_STATUSES, 0) < 10) {
2106 mvmvif->seqno_valid = true;
2107 /* +0x10 because the set API expects next-to-use, not last-used */
2108 mvmvif->seqno = status->non_qos_seq_ctr + 0x10;
2109 }
2110
2111 return true;
2112 }
2113
iwl_mvm_convert_gtk_v2(struct iwl_wowlan_status_data * status,struct iwl_wowlan_gtk_status_v2 * data)2114 static void iwl_mvm_convert_gtk_v2(struct iwl_wowlan_status_data *status,
2115 struct iwl_wowlan_gtk_status_v2 *data)
2116 {
2117 BUILD_BUG_ON(sizeof(status->gtk[0].key) < sizeof(data->key));
2118 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY +
2119 sizeof(data->tkip_mic_key) >
2120 sizeof(status->gtk[0].key));
2121
2122 status->gtk[0].len = data->key_len;
2123 status->gtk[0].flags = data->key_flags;
2124
2125 memcpy(status->gtk[0].key, data->key, sizeof(data->key));
2126
2127 /* if it's as long as the TKIP encryption key, copy MIC key */
2128 if (status->gtk[0].len == NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY)
2129 memcpy(status->gtk[0].key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
2130 data->tkip_mic_key, sizeof(data->tkip_mic_key));
2131 }
2132
iwl_mvm_convert_gtk_v3(struct iwl_wowlan_status_data * status,struct iwl_wowlan_gtk_status_v3 * data)2133 static void iwl_mvm_convert_gtk_v3(struct iwl_wowlan_status_data *status,
2134 struct iwl_wowlan_gtk_status_v3 *data)
2135 {
2136 int data_idx, status_idx = 0;
2137
2138 BUILD_BUG_ON(sizeof(status->gtk[0].key) < sizeof(data[0].key));
2139 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY +
2140 sizeof(data[0].tkip_mic_key) >
2141 sizeof(status->gtk[0].key));
2142 BUILD_BUG_ON(ARRAY_SIZE(status->gtk) < WOWLAN_GTK_KEYS_NUM);
2143 for (data_idx = 0; data_idx < ARRAY_SIZE(status->gtk); data_idx++) {
2144 if (!(data[data_idx].key_len))
2145 continue;
2146 status->gtk[status_idx].len = data[data_idx].key_len;
2147 status->gtk[status_idx].flags = data[data_idx].key_flags;
2148 status->gtk[status_idx].id = status->gtk[status_idx].flags &
2149 IWL_WOWLAN_GTK_IDX_MASK;
2150
2151 memcpy(status->gtk[status_idx].key, data[data_idx].key,
2152 sizeof(data[data_idx].key));
2153
2154 /* if it's as long as the TKIP encryption key, copy MIC key */
2155 if (status->gtk[status_idx].len ==
2156 NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY)
2157 memcpy(status->gtk[status_idx].key +
2158 NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
2159 data[data_idx].tkip_mic_key,
2160 sizeof(data[data_idx].tkip_mic_key));
2161 status_idx++;
2162 }
2163 }
2164
iwl_mvm_convert_igtk(struct iwl_wowlan_status_data * status,struct iwl_wowlan_igtk_status * data)2165 static void iwl_mvm_convert_igtk(struct iwl_wowlan_status_data *status,
2166 struct iwl_wowlan_igtk_status *data)
2167 {
2168 int i;
2169
2170 BUILD_BUG_ON(sizeof(status->igtk.key) < sizeof(data->key));
2171 BUILD_BUG_ON(sizeof(status->igtk.ipn) != sizeof(data->ipn));
2172
2173 if (!data->key_len)
2174 return;
2175
2176 status->igtk.len = data->key_len;
2177 status->igtk.flags = data->key_flags;
2178 status->igtk.id = u32_get_bits(data->key_flags,
2179 IWL_WOWLAN_IGTK_BIGTK_IDX_MASK)
2180 + WOWLAN_IGTK_MIN_INDEX;
2181
2182 memcpy(status->igtk.key, data->key, sizeof(data->key));
2183
2184 /* mac80211 expects big endian for memcmp() to work, convert */
2185 for (i = 0; i < sizeof(data->ipn); i++)
2186 status->igtk.ipn[i] = data->ipn[sizeof(data->ipn) - i - 1];
2187 }
2188
iwl_mvm_parse_wowlan_info_notif(struct iwl_mvm * mvm,struct iwl_wowlan_info_notif * data,struct iwl_wowlan_status_data * status,u32 len)2189 static void iwl_mvm_parse_wowlan_info_notif(struct iwl_mvm *mvm,
2190 struct iwl_wowlan_info_notif *data,
2191 struct iwl_wowlan_status_data *status,
2192 u32 len)
2193 {
2194 u32 i;
2195
2196 if (!data) {
2197 IWL_ERR(mvm, "iwl_wowlan_info_notif data is NULL\n");
2198 status = NULL;
2199 return;
2200 }
2201
2202 if (len < sizeof(*data)) {
2203 IWL_ERR(mvm, "Invalid WoWLAN info notification!\n");
2204 status = NULL;
2205 return;
2206 }
2207
2208 iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc);
2209 iwl_mvm_convert_gtk_v3(status, data->gtk);
2210 iwl_mvm_convert_igtk(status, &data->igtk[0]);
2211
2212 status->replay_ctr = le64_to_cpu(data->replay_ctr);
2213 status->pattern_number = le16_to_cpu(data->pattern_number);
2214 for (i = 0; i < IWL_MAX_TID_COUNT; i++)
2215 status->qos_seq_ctr[i] =
2216 le16_to_cpu(data->qos_seq_ctr[i]);
2217 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons);
2218 status->num_of_gtk_rekeys =
2219 le32_to_cpu(data->num_of_gtk_rekeys);
2220 status->received_beacons = le32_to_cpu(data->received_beacons);
2221 status->tid_tear_down = data->tid_tear_down;
2222 }
2223
2224 /* Occasionally, templates would be nice. This is one of those times ... */
2225 #define iwl_mvm_parse_wowlan_status_common(_ver) \
2226 static struct iwl_wowlan_status_data * \
2227 iwl_mvm_parse_wowlan_status_common_ ## _ver(struct iwl_mvm *mvm, \
2228 struct iwl_wowlan_status_ ##_ver *data,\
2229 int len) \
2230 { \
2231 struct iwl_wowlan_status_data *status; \
2232 int data_size, i; \
2233 \
2234 if (len < sizeof(*data)) { \
2235 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \
2236 return NULL; \
2237 } \
2238 \
2239 data_size = ALIGN(le32_to_cpu(data->wake_packet_bufsize), 4); \
2240 if (len != sizeof(*data) + data_size) { \
2241 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \
2242 return NULL; \
2243 } \
2244 \
2245 status = kzalloc(sizeof(*status), GFP_KERNEL); \
2246 if (!status) \
2247 return NULL; \
2248 \
2249 /* copy all the common fields */ \
2250 status->replay_ctr = le64_to_cpu(data->replay_ctr); \
2251 status->pattern_number = le16_to_cpu(data->pattern_number); \
2252 status->non_qos_seq_ctr = le16_to_cpu(data->non_qos_seq_ctr); \
2253 for (i = 0; i < 8; i++) \
2254 status->qos_seq_ctr[i] = \
2255 le16_to_cpu(data->qos_seq_ctr[i]); \
2256 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); \
2257 status->num_of_gtk_rekeys = \
2258 le32_to_cpu(data->num_of_gtk_rekeys); \
2259 status->received_beacons = le32_to_cpu(data->received_beacons); \
2260 status->wake_packet_length = \
2261 le32_to_cpu(data->wake_packet_length); \
2262 status->wake_packet_bufsize = \
2263 le32_to_cpu(data->wake_packet_bufsize); \
2264 if (status->wake_packet_bufsize) { \
2265 status->wake_packet = \
2266 kmemdup(data->wake_packet, \
2267 status->wake_packet_bufsize, \
2268 GFP_KERNEL); \
2269 if (!status->wake_packet) { \
2270 kfree(status); \
2271 return NULL; \
2272 } \
2273 } else { \
2274 status->wake_packet = NULL; \
2275 } \
2276 \
2277 return status; \
2278 }
2279
2280 iwl_mvm_parse_wowlan_status_common(v6)
iwl_mvm_parse_wowlan_status_common(v7)2281 iwl_mvm_parse_wowlan_status_common(v7)
2282 iwl_mvm_parse_wowlan_status_common(v9)
2283 iwl_mvm_parse_wowlan_status_common(v12)
2284
2285 static struct iwl_wowlan_status_data *
2286 iwl_mvm_send_wowlan_get_status(struct iwl_mvm *mvm, u8 sta_id)
2287 {
2288 struct iwl_wowlan_status_data *status;
2289 struct iwl_wowlan_get_status_cmd get_status_cmd = {
2290 .sta_id = cpu_to_le32(sta_id),
2291 };
2292 struct iwl_host_cmd cmd = {
2293 .id = WOWLAN_GET_STATUSES,
2294 .flags = CMD_WANT_SKB,
2295 .data = { &get_status_cmd, },
2296 .len = { sizeof(get_status_cmd), },
2297 };
2298 int ret, len;
2299 u8 notif_ver;
2300 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id,
2301 IWL_FW_CMD_VER_UNKNOWN);
2302
2303 if (cmd_ver == IWL_FW_CMD_VER_UNKNOWN)
2304 cmd.len[0] = 0;
2305
2306 lockdep_assert_held(&mvm->mutex);
2307
2308 ret = iwl_mvm_send_cmd(mvm, &cmd);
2309 if (ret) {
2310 IWL_ERR(mvm, "failed to query wakeup status (%d)\n", ret);
2311 return ERR_PTR(ret);
2312 }
2313
2314 len = iwl_rx_packet_payload_len(cmd.resp_pkt);
2315
2316 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */
2317 notif_ver = iwl_mvm_lookup_wowlan_status_ver(mvm);
2318
2319 if (notif_ver < 7) {
2320 struct iwl_wowlan_status_v6 *v6 = (void *)cmd.resp_pkt->data;
2321
2322 status = iwl_mvm_parse_wowlan_status_common_v6(mvm, v6, len);
2323 if (!status)
2324 goto out_free_resp;
2325
2326 BUILD_BUG_ON(sizeof(v6->gtk.decrypt_key) >
2327 sizeof(status->gtk[0].key));
2328 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY +
2329 sizeof(v6->gtk.tkip_mic_key) >
2330 sizeof(status->gtk[0].key));
2331
2332 /* copy GTK info to the right place */
2333 memcpy(status->gtk[0].key, v6->gtk.decrypt_key,
2334 sizeof(v6->gtk.decrypt_key));
2335 memcpy(status->gtk[0].key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
2336 v6->gtk.tkip_mic_key,
2337 sizeof(v6->gtk.tkip_mic_key));
2338
2339 iwl_mvm_convert_key_counters(status, &v6->gtk.rsc.all_tsc_rsc);
2340
2341 /* hardcode the key length to 16 since v6 only supports 16 */
2342 status->gtk[0].len = 16;
2343
2344 /*
2345 * The key index only uses 2 bits (values 0 to 3) and
2346 * we always set bit 7 which means this is the
2347 * currently used key.
2348 */
2349 status->gtk[0].flags = v6->gtk.key_index | BIT(7);
2350 } else if (notif_ver == 7) {
2351 struct iwl_wowlan_status_v7 *v7 = (void *)cmd.resp_pkt->data;
2352
2353 status = iwl_mvm_parse_wowlan_status_common_v7(mvm, v7, len);
2354 if (!status)
2355 goto out_free_resp;
2356
2357 iwl_mvm_convert_key_counters(status, &v7->gtk[0].rsc.all_tsc_rsc);
2358 iwl_mvm_convert_gtk_v2(status, &v7->gtk[0]);
2359 iwl_mvm_convert_igtk(status, &v7->igtk[0]);
2360 } else if (notif_ver == 9 || notif_ver == 10 || notif_ver == 11) {
2361 struct iwl_wowlan_status_v9 *v9 = (void *)cmd.resp_pkt->data;
2362
2363 /* these three command versions have same layout and size, the
2364 * difference is only in a few not used (reserved) fields.
2365 */
2366 status = iwl_mvm_parse_wowlan_status_common_v9(mvm, v9, len);
2367 if (!status)
2368 goto out_free_resp;
2369
2370 iwl_mvm_convert_key_counters(status, &v9->gtk[0].rsc.all_tsc_rsc);
2371 iwl_mvm_convert_gtk_v2(status, &v9->gtk[0]);
2372 iwl_mvm_convert_igtk(status, &v9->igtk[0]);
2373
2374 status->tid_tear_down = v9->tid_tear_down;
2375 } else if (notif_ver == 12) {
2376 struct iwl_wowlan_status_v12 *v12 = (void *)cmd.resp_pkt->data;
2377
2378 status = iwl_mvm_parse_wowlan_status_common_v12(mvm, v12, len);
2379 if (!status)
2380 goto out_free_resp;
2381
2382 iwl_mvm_convert_key_counters_v5(status, &v12->gtk[0].sc);
2383 iwl_mvm_convert_gtk_v3(status, v12->gtk);
2384 iwl_mvm_convert_igtk(status, &v12->igtk[0]);
2385
2386 status->tid_tear_down = v12->tid_tear_down;
2387 } else {
2388 IWL_ERR(mvm,
2389 "Firmware advertises unknown WoWLAN status response %d!\n",
2390 notif_ver);
2391 status = NULL;
2392 }
2393
2394 out_free_resp:
2395 iwl_free_resp(&cmd);
2396 return status;
2397 }
2398
2399 /* releases the MVM mutex */
iwl_mvm_query_wakeup_reasons(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_wowlan_status_data * status)2400 static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm,
2401 struct ieee80211_vif *vif,
2402 struct iwl_wowlan_status_data *status)
2403 {
2404 int i;
2405 bool keep;
2406 struct iwl_mvm_sta *mvm_ap_sta;
2407
2408 if (!status)
2409 goto out_unlock;
2410
2411 IWL_DEBUG_WOWLAN(mvm, "wakeup reason 0x%x\n",
2412 status->wakeup_reasons);
2413
2414 /* still at hard-coded place 0 for D3 image */
2415 mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, 0);
2416 if (!mvm_ap_sta)
2417 goto out_unlock;
2418
2419 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
2420 u16 seq = status->qos_seq_ctr[i];
2421 /* firmware stores last-used value, we store next value */
2422 seq += 0x10;
2423 mvm_ap_sta->tid_data[i].seq_number = seq;
2424 }
2425
2426 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000) {
2427 i = mvm->offload_tid;
2428 iwl_trans_set_q_ptrs(mvm->trans,
2429 mvm_ap_sta->tid_data[i].txq_id,
2430 mvm_ap_sta->tid_data[i].seq_number >> 4);
2431 }
2432
2433 /* now we have all the data we need, unlock to avoid mac80211 issues */
2434 mutex_unlock(&mvm->mutex);
2435
2436 iwl_mvm_report_wakeup_reasons(mvm, vif, status);
2437
2438 keep = iwl_mvm_setup_connection_keep(mvm, vif, status);
2439
2440 return keep;
2441
2442 out_unlock:
2443 mutex_unlock(&mvm->mutex);
2444 return false;
2445 }
2446
2447 #define ND_QUERY_BUF_LEN (sizeof(struct iwl_scan_offload_profile_match) * \
2448 IWL_SCAN_MAX_PROFILES)
2449
2450 struct iwl_mvm_nd_results {
2451 u32 matched_profiles;
2452 u8 matches[ND_QUERY_BUF_LEN];
2453 };
2454
2455 static int
iwl_mvm_netdetect_query_results(struct iwl_mvm * mvm,struct iwl_mvm_nd_results * results)2456 iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm,
2457 struct iwl_mvm_nd_results *results)
2458 {
2459 struct iwl_scan_offload_match_info *query;
2460 struct iwl_host_cmd cmd = {
2461 .id = SCAN_OFFLOAD_PROFILES_QUERY_CMD,
2462 .flags = CMD_WANT_SKB,
2463 };
2464 int ret, len;
2465 size_t query_len, matches_len;
2466 int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw);
2467
2468 ret = iwl_mvm_send_cmd(mvm, &cmd);
2469 if (ret) {
2470 IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret);
2471 return ret;
2472 }
2473
2474 if (fw_has_api(&mvm->fw->ucode_capa,
2475 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2476 query_len = sizeof(struct iwl_scan_offload_match_info);
2477 matches_len = sizeof(struct iwl_scan_offload_profile_match) *
2478 max_profiles;
2479 } else {
2480 query_len = sizeof(struct iwl_scan_offload_profiles_query_v1);
2481 matches_len = sizeof(struct iwl_scan_offload_profile_match_v1) *
2482 max_profiles;
2483 }
2484
2485 len = iwl_rx_packet_payload_len(cmd.resp_pkt);
2486 if (len < query_len) {
2487 IWL_ERR(mvm, "Invalid scan offload profiles query response!\n");
2488 ret = -EIO;
2489 goto out_free_resp;
2490 }
2491
2492 query = (void *)cmd.resp_pkt->data;
2493
2494 results->matched_profiles = le32_to_cpu(query->matched_profiles);
2495 memcpy(results->matches, query->matches, matches_len);
2496
2497 #ifdef CONFIG_IWLWIFI_DEBUGFS
2498 mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done);
2499 #endif
2500
2501 out_free_resp:
2502 iwl_free_resp(&cmd);
2503 return ret;
2504 }
2505
iwl_mvm_query_num_match_chans(struct iwl_mvm * mvm,struct iwl_mvm_nd_results * results,int idx)2506 static int iwl_mvm_query_num_match_chans(struct iwl_mvm *mvm,
2507 struct iwl_mvm_nd_results *results,
2508 int idx)
2509 {
2510 int n_chans = 0, i;
2511
2512 if (fw_has_api(&mvm->fw->ucode_capa,
2513 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2514 struct iwl_scan_offload_profile_match *matches =
2515 (void *)results->matches;
2516
2517 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; i++)
2518 n_chans += hweight8(matches[idx].matching_channels[i]);
2519 } else {
2520 struct iwl_scan_offload_profile_match_v1 *matches =
2521 (void *)results->matches;
2522
2523 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1; i++)
2524 n_chans += hweight8(matches[idx].matching_channels[i]);
2525 }
2526
2527 return n_chans;
2528 }
2529
iwl_mvm_query_set_freqs(struct iwl_mvm * mvm,struct iwl_mvm_nd_results * results,struct cfg80211_wowlan_nd_match * match,int idx)2530 static void iwl_mvm_query_set_freqs(struct iwl_mvm *mvm,
2531 struct iwl_mvm_nd_results *results,
2532 struct cfg80211_wowlan_nd_match *match,
2533 int idx)
2534 {
2535 int i;
2536
2537 if (fw_has_api(&mvm->fw->ucode_capa,
2538 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2539 struct iwl_scan_offload_profile_match *matches =
2540 (void *)results->matches;
2541
2542 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; i++)
2543 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
2544 match->channels[match->n_channels++] =
2545 mvm->nd_channels[i]->center_freq;
2546 } else {
2547 struct iwl_scan_offload_profile_match_v1 *matches =
2548 (void *)results->matches;
2549
2550 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1 * 8; i++)
2551 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
2552 match->channels[match->n_channels++] =
2553 mvm->nd_channels[i]->center_freq;
2554 }
2555 }
2556
2557 /**
2558 * enum iwl_d3_notif - d3 notifications
2559 * @IWL_D3_NOTIF_WOWLAN_INFO: WOWLAN_INFO_NOTIF was received
2560 * @IWL_D3_NOTIF_WOWLAN_WAKE_PKT: WOWLAN_WAKE_PKT_NOTIF was received
2561 * @IWL_D3_NOTIF_PROT_OFFLOAD: PROT_OFFLOAD_NOTIF was received
2562 * @IWL_D3_ND_MATCH_INFO: OFFLOAD_MATCH_INFO_NOTIF was received
2563 * @IWL_D3_NOTIF_D3_END_NOTIF: D3_END_NOTIF was received
2564 */
2565 enum iwl_d3_notif {
2566 IWL_D3_NOTIF_WOWLAN_INFO = BIT(0),
2567 IWL_D3_NOTIF_WOWLAN_WAKE_PKT = BIT(1),
2568 IWL_D3_NOTIF_PROT_OFFLOAD = BIT(2),
2569 IWL_D3_ND_MATCH_INFO = BIT(3),
2570 IWL_D3_NOTIF_D3_END_NOTIF = BIT(4)
2571 };
2572
2573 /* manage d3 resume data */
2574 struct iwl_d3_data {
2575 struct iwl_wowlan_status_data *status;
2576 bool test;
2577 u32 d3_end_flags;
2578 u32 notif_expected; /* bitmap - see &enum iwl_d3_notif */
2579 u32 notif_received; /* bitmap - see &enum iwl_d3_notif */
2580 struct iwl_mvm_nd_results *nd_results;
2581 bool nd_results_valid;
2582 };
2583
iwl_mvm_query_netdetect_reasons(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_d3_data * d3_data)2584 static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm,
2585 struct ieee80211_vif *vif,
2586 struct iwl_d3_data *d3_data)
2587 {
2588 struct cfg80211_wowlan_nd_info *net_detect = NULL;
2589 struct cfg80211_wowlan_wakeup wakeup = {
2590 .pattern_idx = -1,
2591 };
2592 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
2593 unsigned long matched_profiles;
2594 u32 reasons = 0;
2595 int i, n_matches, ret;
2596
2597 if (WARN_ON(!d3_data || !d3_data->status))
2598 goto out;
2599
2600 reasons = d3_data->status->wakeup_reasons;
2601
2602 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
2603 wakeup.rfkill_release = true;
2604
2605 if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS)
2606 goto out;
2607
2608 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
2609 WOWLAN_INFO_NOTIFICATION, 0)) {
2610 IWL_INFO(mvm, "Query FW for ND results\n");
2611 ret = iwl_mvm_netdetect_query_results(mvm, d3_data->nd_results);
2612
2613 } else {
2614 IWL_INFO(mvm, "Notification based ND results\n");
2615 ret = d3_data->nd_results_valid ? 0 : -1;
2616 }
2617
2618 if (ret || !d3_data->nd_results->matched_profiles) {
2619 wakeup_report = NULL;
2620 goto out;
2621 }
2622
2623 matched_profiles = d3_data->nd_results->matched_profiles;
2624 if (mvm->n_nd_match_sets) {
2625 n_matches = hweight_long(matched_profiles);
2626 } else {
2627 IWL_ERR(mvm, "no net detect match information available\n");
2628 n_matches = 0;
2629 }
2630
2631 net_detect = kzalloc(struct_size(net_detect, matches, n_matches),
2632 GFP_KERNEL);
2633 if (!net_detect || !n_matches)
2634 goto out_report_nd;
2635
2636 for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) {
2637 struct cfg80211_wowlan_nd_match *match;
2638 int idx, n_channels = 0;
2639
2640 n_channels = iwl_mvm_query_num_match_chans(mvm,
2641 d3_data->nd_results,
2642 i);
2643
2644 match = kzalloc(struct_size(match, channels, n_channels),
2645 GFP_KERNEL);
2646 if (!match)
2647 goto out_report_nd;
2648
2649 net_detect->matches[net_detect->n_matches++] = match;
2650
2651 /* We inverted the order of the SSIDs in the scan
2652 * request, so invert the index here.
2653 */
2654 idx = mvm->n_nd_match_sets - i - 1;
2655 match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len;
2656 memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid,
2657 match->ssid.ssid_len);
2658
2659 if (mvm->n_nd_channels < n_channels)
2660 continue;
2661
2662 iwl_mvm_query_set_freqs(mvm, d3_data->nd_results, match, i);
2663 }
2664
2665 out_report_nd:
2666 wakeup.net_detect = net_detect;
2667 out:
2668 iwl_mvm_free_nd(mvm);
2669
2670 mutex_unlock(&mvm->mutex);
2671 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
2672
2673 if (net_detect) {
2674 for (i = 0; i < net_detect->n_matches; i++)
2675 kfree(net_detect->matches[i]);
2676 kfree(net_detect);
2677 }
2678 }
2679
iwl_mvm_d3_disconnect_iter(void * data,u8 * mac,struct ieee80211_vif * vif)2680 static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac,
2681 struct ieee80211_vif *vif)
2682 {
2683 /* skip the one we keep connection on */
2684 if (data == vif)
2685 return;
2686
2687 if (vif->type == NL80211_IFTYPE_STATION)
2688 ieee80211_resume_disconnect(vif);
2689 }
2690
iwl_mvm_rt_status(struct iwl_trans * trans,u32 base,u32 * err_id)2691 static bool iwl_mvm_rt_status(struct iwl_trans *trans, u32 base, u32 *err_id)
2692 {
2693 struct error_table_start {
2694 /* cf. struct iwl_error_event_table */
2695 u32 valid;
2696 __le32 err_id;
2697 } err_info;
2698
2699 if (!base)
2700 return false;
2701
2702 iwl_trans_read_mem_bytes(trans, base,
2703 &err_info, sizeof(err_info));
2704 if (err_info.valid && err_id)
2705 *err_id = le32_to_cpu(err_info.err_id);
2706
2707 return !!err_info.valid;
2708 }
2709
iwl_mvm_check_rt_status(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2710 static bool iwl_mvm_check_rt_status(struct iwl_mvm *mvm,
2711 struct ieee80211_vif *vif)
2712 {
2713 u32 err_id;
2714
2715 /* check for lmac1 error */
2716 if (iwl_mvm_rt_status(mvm->trans,
2717 mvm->trans->dbg.lmac_error_event_table[0],
2718 &err_id)) {
2719 if (err_id == RF_KILL_INDICATOR_FOR_WOWLAN) {
2720 struct cfg80211_wowlan_wakeup wakeup = {
2721 .rfkill_release = true,
2722 };
2723 ieee80211_report_wowlan_wakeup(vif, &wakeup,
2724 GFP_KERNEL);
2725 }
2726 return true;
2727 }
2728
2729 /* check if we have lmac2 set and check for error */
2730 if (iwl_mvm_rt_status(mvm->trans,
2731 mvm->trans->dbg.lmac_error_event_table[1], NULL))
2732 return true;
2733
2734 /* check for umac error */
2735 if (iwl_mvm_rt_status(mvm->trans,
2736 mvm->trans->dbg.umac_error_event_table, NULL))
2737 return true;
2738
2739 return false;
2740 }
2741
2742 /*
2743 * This function assumes:
2744 * 1. The mutex is already held.
2745 * 2. The callee functions unlock the mutex.
2746 */
2747 static bool
iwl_mvm_choose_query_wakeup_reasons(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_d3_data * d3_data)2748 iwl_mvm_choose_query_wakeup_reasons(struct iwl_mvm *mvm,
2749 struct ieee80211_vif *vif,
2750 struct iwl_d3_data *d3_data)
2751 {
2752 lockdep_assert_held(&mvm->mutex);
2753
2754 /* if FW uses status notification, status shouldn't be NULL here */
2755 if (!d3_data->status) {
2756 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2757 u8 sta_id = mvm->net_detect ? IWL_MVM_INVALID_STA :
2758 mvmvif->deflink.ap_sta_id;
2759
2760 d3_data->status = iwl_mvm_send_wowlan_get_status(mvm, sta_id);
2761 }
2762
2763 if (mvm->net_detect) {
2764 iwl_mvm_query_netdetect_reasons(mvm, vif, d3_data);
2765 } else {
2766 bool keep = iwl_mvm_query_wakeup_reasons(mvm, vif,
2767 d3_data->status);
2768
2769 #ifdef CONFIG_IWLWIFI_DEBUGFS
2770 if (keep)
2771 mvm->keep_vif = vif;
2772 #endif
2773
2774 return keep;
2775 }
2776 return false;
2777 }
2778
2779 #define IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT (IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET | \
2780 IWL_WOWLAN_WAKEUP_BY_PATTERN | \
2781 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN |\
2782 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN_WILDCARD |\
2783 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN |\
2784 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN_WILDCARD)
2785
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)2786 static int iwl_mvm_wowlan_store_wake_pkt(struct iwl_mvm *mvm,
2787 struct iwl_wowlan_wake_pkt_notif *notif,
2788 struct iwl_wowlan_status_data *status,
2789 u32 len)
2790 {
2791 u32 data_size, packet_len = le32_to_cpu(notif->wake_packet_length);
2792
2793 if (len < sizeof(*notif)) {
2794 IWL_ERR(mvm, "Invalid WoWLAN wake packet notification!\n");
2795 return -EIO;
2796 }
2797
2798 if (WARN_ON(!status)) {
2799 IWL_ERR(mvm, "Got wake packet notification but wowlan status data is NULL\n");
2800 return -EIO;
2801 }
2802
2803 if (WARN_ON(!(status->wakeup_reasons &
2804 IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT))) {
2805 IWL_ERR(mvm, "Got wakeup packet but wakeup reason is %x\n",
2806 status->wakeup_reasons);
2807 return -EIO;
2808 }
2809
2810 data_size = len - offsetof(struct iwl_wowlan_wake_pkt_notif, wake_packet);
2811
2812 /* data_size got the padding from the notification, remove it. */
2813 if (packet_len < data_size)
2814 data_size = packet_len;
2815
2816 status->wake_packet = kmemdup(notif->wake_packet, data_size,
2817 GFP_ATOMIC);
2818
2819 if (!status->wake_packet)
2820 return -ENOMEM;
2821
2822 status->wake_packet_length = packet_len;
2823 status->wake_packet_bufsize = data_size;
2824
2825 return 0;
2826 }
2827
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)2828 static void iwl_mvm_nd_match_info_handler(struct iwl_mvm *mvm,
2829 struct iwl_d3_data *d3_data,
2830 struct iwl_scan_offload_match_info *notif,
2831 u32 len)
2832 {
2833 struct iwl_wowlan_status_data *status = d3_data->status;
2834 struct ieee80211_vif *vif = iwl_mvm_get_bss_vif(mvm);
2835 struct iwl_mvm_nd_results *results = d3_data->nd_results;
2836 size_t i, matches_len = sizeof(struct iwl_scan_offload_profile_match) *
2837 iwl_umac_scan_get_max_profiles(mvm->fw);
2838
2839 if (IS_ERR_OR_NULL(vif))
2840 return;
2841
2842 if (len < sizeof(struct iwl_scan_offload_match_info)) {
2843 IWL_ERR(mvm, "Invalid scan match info notification\n");
2844 return;
2845 }
2846
2847 if (!mvm->net_detect) {
2848 IWL_ERR(mvm, "Unexpected scan match info notification\n");
2849 return;
2850 }
2851
2852 if (!status || status->wakeup_reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
2853 IWL_ERR(mvm,
2854 "Ignore scan match info notification: no reason\n");
2855 return;
2856 }
2857
2858 #ifdef CONFIG_IWLWIFI_DEBUGFS
2859 mvm->last_netdetect_scans = le32_to_cpu(notif->n_scans_done);
2860 #endif
2861
2862 results->matched_profiles = le32_to_cpu(notif->matched_profiles);
2863 IWL_INFO(mvm, "number of matched profiles=%u\n",
2864 results->matched_profiles);
2865
2866 if (results->matched_profiles) {
2867 memcpy(results->matches, notif->matches, matches_len);
2868 d3_data->nd_results_valid = TRUE;
2869 }
2870
2871 /* no scan should be active at this point */
2872 mvm->scan_status = 0;
2873 for (i = 0; i < mvm->max_scans; i++)
2874 mvm->scan_uid_status[i] = 0;
2875 }
2876
iwl_mvm_wait_d3_notif(struct iwl_notif_wait_data * notif_wait,struct iwl_rx_packet * pkt,void * data)2877 static bool iwl_mvm_wait_d3_notif(struct iwl_notif_wait_data *notif_wait,
2878 struct iwl_rx_packet *pkt, void *data)
2879 {
2880 struct iwl_mvm *mvm =
2881 container_of(notif_wait, struct iwl_mvm, notif_wait);
2882 struct iwl_d3_data *d3_data = data;
2883 u32 len;
2884 int ret;
2885 int wowlan_info_ver = iwl_fw_lookup_notif_ver(mvm->fw,
2886 PROT_OFFLOAD_GROUP,
2887 WOWLAN_INFO_NOTIFICATION,
2888 IWL_FW_CMD_VER_UNKNOWN);
2889
2890
2891 switch (WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) {
2892 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION): {
2893 struct iwl_wowlan_info_notif *notif;
2894
2895 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_INFO) {
2896 /* We might get two notifications due to dual bss */
2897 IWL_DEBUG_WOWLAN(mvm,
2898 "Got additional wowlan info notification\n");
2899 break;
2900 }
2901
2902 if (wowlan_info_ver < 2) {
2903 struct iwl_wowlan_info_notif_v1 *notif_v1 = (void *)pkt->data;
2904
2905 notif = kmemdup(notif_v1, sizeof(*notif), GFP_ATOMIC);
2906 if (!notif)
2907 return false;
2908
2909 notif->tid_tear_down = notif_v1->tid_tear_down;
2910 notif->station_id = notif_v1->station_id;
2911 memset_after(notif, 0, station_id);
2912 } else {
2913 notif = (void *)pkt->data;
2914 }
2915
2916 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_INFO;
2917 len = iwl_rx_packet_payload_len(pkt);
2918 iwl_mvm_parse_wowlan_info_notif(mvm, notif, d3_data->status,
2919 len);
2920
2921 if (wowlan_info_ver < 2)
2922 kfree(notif);
2923
2924 if (d3_data->status &&
2925 d3_data->status->wakeup_reasons & IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT)
2926 /* We are supposed to get also wake packet notif */
2927 d3_data->notif_expected |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT;
2928
2929 break;
2930 }
2931 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION): {
2932 struct iwl_wowlan_wake_pkt_notif *notif = (void *)pkt->data;
2933
2934 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_WAKE_PKT) {
2935 /* We shouldn't get two wake packet notifications */
2936 IWL_ERR(mvm,
2937 "Got additional wowlan wake packet notification\n");
2938 } else {
2939 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT;
2940 len = iwl_rx_packet_payload_len(pkt);
2941 ret = iwl_mvm_wowlan_store_wake_pkt(mvm, notif,
2942 d3_data->status,
2943 len);
2944 if (ret)
2945 IWL_ERR(mvm,
2946 "Can't parse WOWLAN_WAKE_PKT_NOTIFICATION\n");
2947 }
2948
2949 break;
2950 }
2951 case WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF): {
2952 struct iwl_scan_offload_match_info *notif = (void *)pkt->data;
2953
2954 if (d3_data->notif_received & IWL_D3_ND_MATCH_INFO) {
2955 IWL_ERR(mvm,
2956 "Got additional netdetect match info\n");
2957 break;
2958 }
2959
2960 d3_data->notif_received |= IWL_D3_ND_MATCH_INFO;
2961
2962 /* explicitly set this in the 'expected' as well */
2963 d3_data->notif_expected |= IWL_D3_ND_MATCH_INFO;
2964
2965 len = iwl_rx_packet_payload_len(pkt);
2966 iwl_mvm_nd_match_info_handler(mvm, d3_data, notif, len);
2967 break;
2968 }
2969 case WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION): {
2970 struct iwl_mvm_d3_end_notif *notif = (void *)pkt->data;
2971
2972 d3_data->d3_end_flags = __le32_to_cpu(notif->flags);
2973 d3_data->notif_received |= IWL_D3_NOTIF_D3_END_NOTIF;
2974
2975 break;
2976 }
2977 default:
2978 WARN_ON(1);
2979 }
2980
2981 return d3_data->notif_received == d3_data->notif_expected;
2982 }
2983
iwl_mvm_resume_firmware(struct iwl_mvm * mvm,bool test)2984 static int iwl_mvm_resume_firmware(struct iwl_mvm *mvm, bool test)
2985 {
2986 int ret;
2987 enum iwl_d3_status d3_status;
2988 struct iwl_host_cmd cmd = {
2989 .id = D0I3_END_CMD,
2990 .flags = CMD_WANT_SKB | CMD_SEND_IN_D3,
2991 };
2992 bool reset = fw_has_capa(&mvm->fw->ucode_capa,
2993 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2994
2995 ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, !reset);
2996 if (ret)
2997 return ret;
2998
2999 if (d3_status != IWL_D3_STATUS_ALIVE) {
3000 IWL_INFO(mvm, "Device was reset during suspend\n");
3001 return -ENOENT;
3002 }
3003
3004 /*
3005 * We should trigger resume flow using command only for 22000 family
3006 * AX210 and above don't need the command since they have
3007 * the doorbell interrupt.
3008 */
3009 if (mvm->trans->trans_cfg->device_family <= IWL_DEVICE_FAMILY_22000 &&
3010 fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_D0I3_END_FIRST)) {
3011 ret = iwl_mvm_send_cmd(mvm, &cmd);
3012 if (ret < 0)
3013 IWL_ERR(mvm, "Failed to send D0I3_END_CMD first (%d)\n",
3014 ret);
3015 }
3016
3017 return ret;
3018 }
3019
3020 #define IWL_MVM_D3_NOTIF_TIMEOUT (HZ / 5)
3021
iwl_mvm_d3_notif_wait(struct iwl_mvm * mvm,struct iwl_d3_data * d3_data)3022 static int iwl_mvm_d3_notif_wait(struct iwl_mvm *mvm,
3023 struct iwl_d3_data *d3_data)
3024 {
3025 static const u16 d3_resume_notif[] = {
3026 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION),
3027 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION),
3028 WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF),
3029 WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION)
3030 };
3031 struct iwl_notification_wait wait_d3_notif;
3032 int ret;
3033
3034 iwl_init_notification_wait(&mvm->notif_wait, &wait_d3_notif,
3035 d3_resume_notif, ARRAY_SIZE(d3_resume_notif),
3036 iwl_mvm_wait_d3_notif, d3_data);
3037
3038 ret = iwl_mvm_resume_firmware(mvm, d3_data->test);
3039 if (ret) {
3040 iwl_remove_notification(&mvm->notif_wait, &wait_d3_notif);
3041 return ret;
3042 }
3043
3044 return iwl_wait_notification(&mvm->notif_wait, &wait_d3_notif,
3045 IWL_MVM_D3_NOTIF_TIMEOUT);
3046 }
3047
iwl_mvm_d3_resume_notif_based(struct iwl_mvm * mvm)3048 static inline bool iwl_mvm_d3_resume_notif_based(struct iwl_mvm *mvm)
3049 {
3050 return iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
3051 WOWLAN_INFO_NOTIFICATION, 0) &&
3052 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
3053 WOWLAN_WAKE_PKT_NOTIFICATION, 0) &&
3054 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
3055 D3_END_NOTIFICATION, 0);
3056 }
3057
__iwl_mvm_resume(struct iwl_mvm * mvm,bool test)3058 static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test)
3059 {
3060 struct ieee80211_vif *vif = NULL;
3061 int ret = 1;
3062 struct iwl_mvm_nd_results results = {};
3063 struct iwl_d3_data d3_data = {
3064 .test = test,
3065 .notif_expected =
3066 IWL_D3_NOTIF_WOWLAN_INFO |
3067 IWL_D3_NOTIF_D3_END_NOTIF,
3068 .nd_results_valid = false,
3069 .nd_results = &results,
3070 };
3071 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
3072 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
3073 bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa,
3074 IWL_UCODE_TLV_CAPA_D0I3_END_FIRST);
3075 bool resume_notif_based = iwl_mvm_d3_resume_notif_based(mvm);
3076 bool keep = false;
3077
3078 mutex_lock(&mvm->mutex);
3079
3080 mvm->last_reset_or_resume_time_jiffies = jiffies;
3081
3082 /* get the BSS vif pointer again */
3083 vif = iwl_mvm_get_bss_vif(mvm);
3084 if (IS_ERR_OR_NULL(vif))
3085 goto err;
3086
3087 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
3088
3089 if (iwl_mvm_check_rt_status(mvm, vif)) {
3090 set_bit(STATUS_FW_ERROR, &mvm->trans->status);
3091 iwl_mvm_dump_nic_error_log(mvm);
3092 iwl_dbg_tlv_time_point(&mvm->fwrt,
3093 IWL_FW_INI_TIME_POINT_FW_ASSERT, NULL);
3094 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert,
3095 false, 0);
3096 ret = 1;
3097 goto err;
3098 }
3099
3100 if (resume_notif_based) {
3101 d3_data.status = kzalloc(sizeof(*d3_data.status), GFP_KERNEL);
3102 if (!d3_data.status) {
3103 IWL_ERR(mvm, "Failed to allocate wowlan status\n");
3104 ret = -ENOMEM;
3105 goto err;
3106 }
3107
3108 ret = iwl_mvm_d3_notif_wait(mvm, &d3_data);
3109 if (ret)
3110 goto err;
3111 } else {
3112 ret = iwl_mvm_resume_firmware(mvm, test);
3113 if (ret < 0)
3114 goto err;
3115 }
3116
3117 /* after the successful handshake, we're out of D3 */
3118 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
3119
3120 /* when reset is required we can't send these following commands */
3121 if (d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)
3122 goto query_wakeup_reasons;
3123
3124 /*
3125 * Query the current location and source from the D3 firmware so we
3126 * can play it back when we re-intiailize the D0 firmware
3127 */
3128 iwl_mvm_update_changed_regdom(mvm);
3129
3130 /* Re-configure PPAG settings */
3131 iwl_mvm_ppag_send_cmd(mvm);
3132
3133 if (!unified_image)
3134 /* Re-configure default SAR profile */
3135 iwl_mvm_sar_select_profile(mvm, 1, 1);
3136
3137 if (mvm->net_detect && unified_image) {
3138 /* If this is a non-unified image, we restart the FW,
3139 * so no need to stop the netdetect scan. If that
3140 * fails, continue and try to get the wake-up reasons,
3141 * but trigger a HW restart by keeping a failure code
3142 * in ret.
3143 */
3144 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT,
3145 false);
3146 }
3147
3148 query_wakeup_reasons:
3149 keep = iwl_mvm_choose_query_wakeup_reasons(mvm, vif, &d3_data);
3150 /* has unlocked the mutex, so skip that */
3151 goto out;
3152
3153 err:
3154 mutex_unlock(&mvm->mutex);
3155 out:
3156 if (d3_data.status)
3157 kfree(d3_data.status->wake_packet);
3158 kfree(d3_data.status);
3159 iwl_mvm_free_nd(mvm);
3160
3161 if (!d3_data.test && !mvm->net_detect)
3162 ieee80211_iterate_active_interfaces_mtx(mvm->hw,
3163 IEEE80211_IFACE_ITER_NORMAL,
3164 iwl_mvm_d3_disconnect_iter,
3165 keep ? vif : NULL);
3166
3167 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
3168
3169 /* no need to reset the device in unified images, if successful */
3170 if (unified_image && !ret) {
3171 /* nothing else to do if we already sent D0I3_END_CMD */
3172 if (d0i3_first)
3173 return 0;
3174
3175 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
3176 D3_END_NOTIFICATION, 0)) {
3177 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL);
3178 if (!ret)
3179 return 0;
3180 } else if (!(d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)) {
3181 return 0;
3182 }
3183 }
3184
3185 /*
3186 * Reconfigure the device in one of the following cases:
3187 * 1. We are not using a unified image
3188 * 2. We are using a unified image but had an error while exiting D3
3189 */
3190 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
3191
3192 /* regardless of what happened, we're now out of D3 */
3193 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
3194
3195 return 1;
3196 }
3197
iwl_mvm_resume(struct ieee80211_hw * hw)3198 int iwl_mvm_resume(struct ieee80211_hw *hw)
3199 {
3200 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3201 int ret;
3202
3203 ret = __iwl_mvm_resume(mvm, false);
3204
3205 iwl_mvm_resume_tcm(mvm);
3206
3207 iwl_fw_runtime_resume(&mvm->fwrt);
3208
3209 return ret;
3210 }
3211
iwl_mvm_set_wakeup(struct ieee80211_hw * hw,bool enabled)3212 void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled)
3213 {
3214 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3215
3216 device_set_wakeup_enable(mvm->trans->dev, enabled);
3217 }
3218
3219 #ifdef CONFIG_IWLWIFI_DEBUGFS
iwl_mvm_d3_test_open(struct inode * inode,struct file * file)3220 static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file)
3221 {
3222 struct iwl_mvm *mvm = inode->i_private;
3223 int err;
3224
3225 if (mvm->d3_test_active)
3226 return -EBUSY;
3227
3228 file->private_data = inode->i_private;
3229
3230 iwl_mvm_pause_tcm(mvm, true);
3231
3232 iwl_fw_runtime_suspend(&mvm->fwrt);
3233
3234 /* start pseudo D3 */
3235 rtnl_lock();
3236 wiphy_lock(mvm->hw->wiphy);
3237 err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true);
3238 wiphy_unlock(mvm->hw->wiphy);
3239 rtnl_unlock();
3240 if (err > 0)
3241 err = -EINVAL;
3242 if (err)
3243 return err;
3244
3245 mvm->d3_test_active = true;
3246 mvm->keep_vif = NULL;
3247 return 0;
3248 }
3249
iwl_mvm_d3_test_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)3250 static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf,
3251 size_t count, loff_t *ppos)
3252 {
3253 struct iwl_mvm *mvm = file->private_data;
3254 u32 pme_asserted;
3255
3256 while (true) {
3257 /* read pme_ptr if available */
3258 if (mvm->d3_test_pme_ptr) {
3259 pme_asserted = iwl_trans_read_mem32(mvm->trans,
3260 mvm->d3_test_pme_ptr);
3261 if (pme_asserted)
3262 break;
3263 }
3264
3265 if (msleep_interruptible(100))
3266 break;
3267 }
3268
3269 return 0;
3270 }
3271
iwl_mvm_d3_test_disconn_work_iter(void * _data,u8 * mac,struct ieee80211_vif * vif)3272 static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac,
3273 struct ieee80211_vif *vif)
3274 {
3275 /* skip the one we keep connection on */
3276 if (_data == vif)
3277 return;
3278
3279 if (vif->type == NL80211_IFTYPE_STATION)
3280 ieee80211_connection_loss(vif);
3281 }
3282
iwl_mvm_d3_test_release(struct inode * inode,struct file * file)3283 static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file)
3284 {
3285 struct iwl_mvm *mvm = inode->i_private;
3286 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
3287 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
3288
3289 mvm->d3_test_active = false;
3290
3291 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
3292
3293 rtnl_lock();
3294 wiphy_lock(mvm->hw->wiphy);
3295 __iwl_mvm_resume(mvm, true);
3296 wiphy_unlock(mvm->hw->wiphy);
3297 rtnl_unlock();
3298
3299 iwl_mvm_resume_tcm(mvm);
3300
3301 iwl_fw_runtime_resume(&mvm->fwrt);
3302
3303 iwl_abort_notification_waits(&mvm->notif_wait);
3304 if (!unified_image) {
3305 int remaining_time = 10;
3306
3307 ieee80211_restart_hw(mvm->hw);
3308
3309 /* wait for restart and disconnect all interfaces */
3310 while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
3311 remaining_time > 0) {
3312 remaining_time--;
3313 msleep(1000);
3314 }
3315
3316 if (remaining_time == 0)
3317 IWL_ERR(mvm, "Timed out waiting for HW restart!\n");
3318 }
3319
3320 ieee80211_iterate_active_interfaces_atomic(
3321 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
3322 iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif);
3323
3324 return 0;
3325 }
3326
3327 const struct file_operations iwl_dbgfs_d3_test_ops = {
3328 .llseek = no_llseek,
3329 .open = iwl_mvm_d3_test_open,
3330 .read = iwl_mvm_d3_test_read,
3331 .release = iwl_mvm_d3_test_release,
3332 };
3333 #endif
3334