1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /*
3 * Copyright (C) 2012-2014, 2018-2022 Intel Corporation
4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
5 * Copyright (C) 2016-2017 Intel Deutschland GmbH
6 */
7 #include <linux/etherdevice.h>
8 #include <linux/ip.h>
9 #include <linux/fs.h>
10 #include <net/cfg80211.h>
11 #include <net/ipv6.h>
12 #include <net/tcp.h>
13 #include <net/addrconf.h>
14 #include "iwl-modparams.h"
15 #include "fw-api.h"
16 #include "mvm.h"
17 #include "fw/img.h"
18
iwl_mvm_set_rekey_data(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct cfg80211_gtk_rekey_data * data)19 void iwl_mvm_set_rekey_data(struct ieee80211_hw *hw,
20 struct ieee80211_vif *vif,
21 struct cfg80211_gtk_rekey_data *data)
22 {
23 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
24 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
25
26 mutex_lock(&mvm->mutex);
27
28 mvmvif->rekey_data.kek_len = data->kek_len;
29 mvmvif->rekey_data.kck_len = data->kck_len;
30 memcpy(mvmvif->rekey_data.kek, data->kek, data->kek_len);
31 memcpy(mvmvif->rekey_data.kck, data->kck, data->kck_len);
32 mvmvif->rekey_data.akm = data->akm & 0xFF;
33 mvmvif->rekey_data.replay_ctr =
34 cpu_to_le64(be64_to_cpup((const __be64 *)data->replay_ctr));
35 mvmvif->rekey_data.valid = true;
36
37 mutex_unlock(&mvm->mutex);
38 }
39
40 #if IS_ENABLED(CONFIG_IPV6)
iwl_mvm_ipv6_addr_change(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct inet6_dev * idev)41 void iwl_mvm_ipv6_addr_change(struct ieee80211_hw *hw,
42 struct ieee80211_vif *vif,
43 struct inet6_dev *idev)
44 {
45 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
46 struct inet6_ifaddr *ifa;
47 int idx = 0;
48
49 memset(mvmvif->tentative_addrs, 0, sizeof(mvmvif->tentative_addrs));
50
51 read_lock_bh(&idev->lock);
52 list_for_each_entry(ifa, &idev->addr_list, if_list) {
53 mvmvif->target_ipv6_addrs[idx] = ifa->addr;
54 if (ifa->flags & IFA_F_TENTATIVE)
55 __set_bit(idx, mvmvif->tentative_addrs);
56 idx++;
57 if (idx >= IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_MAX)
58 break;
59 }
60 read_unlock_bh(&idev->lock);
61
62 mvmvif->num_target_ipv6_addrs = idx;
63 }
64 #endif
65
iwl_mvm_set_default_unicast_key(struct ieee80211_hw * hw,struct ieee80211_vif * vif,int idx)66 void iwl_mvm_set_default_unicast_key(struct ieee80211_hw *hw,
67 struct ieee80211_vif *vif, int idx)
68 {
69 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
70
71 mvmvif->tx_key_idx = idx;
72 }
73
iwl_mvm_convert_p1k(u16 * p1k,__le16 * out)74 static void iwl_mvm_convert_p1k(u16 *p1k, __le16 *out)
75 {
76 int i;
77
78 for (i = 0; i < IWL_P1K_SIZE; i++)
79 out[i] = cpu_to_le16(p1k[i]);
80 }
81
iwl_mvm_find_max_pn(struct ieee80211_key_conf * key,struct iwl_mvm_key_pn * ptk_pn,struct ieee80211_key_seq * seq,int tid,int queues)82 static const u8 *iwl_mvm_find_max_pn(struct ieee80211_key_conf *key,
83 struct iwl_mvm_key_pn *ptk_pn,
84 struct ieee80211_key_seq *seq,
85 int tid, int queues)
86 {
87 const u8 *ret = seq->ccmp.pn;
88 int i;
89
90 /* get the PN from mac80211, used on the default queue */
91 ieee80211_get_key_rx_seq(key, tid, seq);
92
93 /* and use the internal data for the other queues */
94 for (i = 1; i < queues; i++) {
95 const u8 *tmp = ptk_pn->q[i].pn[tid];
96
97 if (memcmp(ret, tmp, IEEE80211_CCMP_PN_LEN) <= 0)
98 ret = tmp;
99 }
100
101 return ret;
102 }
103
104 struct wowlan_key_reprogram_data {
105 bool error;
106 int wep_key_idx;
107 };
108
iwl_mvm_wowlan_program_keys(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key,void * _data)109 static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw,
110 struct ieee80211_vif *vif,
111 struct ieee80211_sta *sta,
112 struct ieee80211_key_conf *key,
113 void *_data)
114 {
115 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
116 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
117 struct wowlan_key_reprogram_data *data = _data;
118 int ret;
119
120 switch (key->cipher) {
121 case WLAN_CIPHER_SUITE_WEP40:
122 case WLAN_CIPHER_SUITE_WEP104: { /* hack it for now */
123 struct {
124 struct iwl_mvm_wep_key_cmd wep_key_cmd;
125 struct iwl_mvm_wep_key wep_key;
126 } __packed wkc = {
127 .wep_key_cmd.mac_id_n_color =
128 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
129 mvmvif->color)),
130 .wep_key_cmd.num_keys = 1,
131 /* firmware sets STA_KEY_FLG_WEP_13BYTES */
132 .wep_key_cmd.decryption_type = STA_KEY_FLG_WEP,
133 .wep_key.key_index = key->keyidx,
134 .wep_key.key_size = key->keylen,
135 };
136
137 /*
138 * This will fail -- the key functions don't set support
139 * pairwise WEP keys. However, that's better than silently
140 * failing WoWLAN. Or maybe not?
141 */
142 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
143 break;
144
145 memcpy(&wkc.wep_key.key[3], key->key, key->keylen);
146 if (key->keyidx == mvmvif->tx_key_idx) {
147 /* TX key must be at offset 0 */
148 wkc.wep_key.key_offset = 0;
149 } else {
150 /* others start at 1 */
151 data->wep_key_idx++;
152 wkc.wep_key.key_offset = data->wep_key_idx;
153 }
154
155 mutex_lock(&mvm->mutex);
156 ret = iwl_mvm_send_cmd_pdu(mvm, WEP_KEY, 0, sizeof(wkc), &wkc);
157 data->error = ret != 0;
158
159 mvm->ptk_ivlen = key->iv_len;
160 mvm->ptk_icvlen = key->icv_len;
161 mvm->gtk_ivlen = key->iv_len;
162 mvm->gtk_icvlen = key->icv_len;
163 mutex_unlock(&mvm->mutex);
164
165 /* don't upload key again */
166 return;
167 }
168 default:
169 data->error = true;
170 return;
171 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
172 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
173 return;
174 case WLAN_CIPHER_SUITE_AES_CMAC:
175 /*
176 * Ignore CMAC keys -- the WoWLAN firmware doesn't support them
177 * but we also shouldn't abort suspend due to that. It does have
178 * support for the IGTK key renewal, but doesn't really use the
179 * IGTK for anything. This means we could spuriously wake up or
180 * be deauthenticated, but that was considered acceptable.
181 */
182 return;
183 case WLAN_CIPHER_SUITE_TKIP:
184 case WLAN_CIPHER_SUITE_CCMP:
185 case WLAN_CIPHER_SUITE_GCMP:
186 case WLAN_CIPHER_SUITE_GCMP_256:
187 break;
188 }
189
190 mutex_lock(&mvm->mutex);
191 /*
192 * The D3 firmware hardcodes the key offset 0 as the key it
193 * uses to transmit packets to the AP, i.e. the PTK.
194 */
195 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
196 mvm->ptk_ivlen = key->iv_len;
197 mvm->ptk_icvlen = key->icv_len;
198 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 0);
199 } else {
200 /*
201 * firmware only supports TSC/RSC for a single key,
202 * so if there are multiple keep overwriting them
203 * with new ones -- this relies on mac80211 doing
204 * list_add_tail().
205 */
206 mvm->gtk_ivlen = key->iv_len;
207 mvm->gtk_icvlen = key->icv_len;
208 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 1);
209 }
210 mutex_unlock(&mvm->mutex);
211 data->error = ret != 0;
212 }
213
214 struct wowlan_key_rsc_tsc_data {
215 struct iwl_wowlan_rsc_tsc_params_cmd_v4 *rsc_tsc;
216 bool have_rsc_tsc;
217 };
218
iwl_mvm_wowlan_get_rsc_tsc_data(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key,void * _data)219 static void iwl_mvm_wowlan_get_rsc_tsc_data(struct ieee80211_hw *hw,
220 struct ieee80211_vif *vif,
221 struct ieee80211_sta *sta,
222 struct ieee80211_key_conf *key,
223 void *_data)
224 {
225 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
226 struct wowlan_key_rsc_tsc_data *data = _data;
227 struct aes_sc *aes_sc;
228 struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
229 struct ieee80211_key_seq seq;
230 int i;
231
232 switch (key->cipher) {
233 default:
234 break;
235 case WLAN_CIPHER_SUITE_TKIP:
236 if (sta) {
237 u64 pn64;
238
239 tkip_sc =
240 data->rsc_tsc->params.all_tsc_rsc.tkip.unicast_rsc;
241 tkip_tx_sc =
242 &data->rsc_tsc->params.all_tsc_rsc.tkip.tsc;
243
244 pn64 = atomic64_read(&key->tx_pn);
245 tkip_tx_sc->iv16 = cpu_to_le16(TKIP_PN_TO_IV16(pn64));
246 tkip_tx_sc->iv32 = cpu_to_le32(TKIP_PN_TO_IV32(pn64));
247 } else {
248 tkip_sc =
249 data->rsc_tsc->params.all_tsc_rsc.tkip.multicast_rsc;
250 }
251
252 /*
253 * For non-QoS this relies on the fact that both the uCode and
254 * mac80211 use TID 0 (as they need to to avoid replay attacks)
255 * for checking the IV in the frames.
256 */
257 for (i = 0; i < IWL_NUM_RSC; i++) {
258 ieee80211_get_key_rx_seq(key, i, &seq);
259 tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
260 tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
261 }
262
263 data->have_rsc_tsc = true;
264 break;
265 case WLAN_CIPHER_SUITE_CCMP:
266 case WLAN_CIPHER_SUITE_GCMP:
267 case WLAN_CIPHER_SUITE_GCMP_256:
268 if (sta) {
269 struct aes_sc *aes_tx_sc;
270 u64 pn64;
271
272 aes_sc =
273 data->rsc_tsc->params.all_tsc_rsc.aes.unicast_rsc;
274 aes_tx_sc =
275 &data->rsc_tsc->params.all_tsc_rsc.aes.tsc;
276
277 pn64 = atomic64_read(&key->tx_pn);
278 aes_tx_sc->pn = cpu_to_le64(pn64);
279 } else {
280 aes_sc =
281 data->rsc_tsc->params.all_tsc_rsc.aes.multicast_rsc;
282 }
283
284 /*
285 * For non-QoS this relies on the fact that both the uCode and
286 * mac80211/our RX code use TID 0 for checking the PN.
287 */
288 if (sta && iwl_mvm_has_new_rx_api(mvm)) {
289 struct iwl_mvm_sta *mvmsta;
290 struct iwl_mvm_key_pn *ptk_pn;
291 const u8 *pn;
292
293 mvmsta = iwl_mvm_sta_from_mac80211(sta);
294 rcu_read_lock();
295 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]);
296 if (WARN_ON(!ptk_pn)) {
297 rcu_read_unlock();
298 break;
299 }
300
301 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
302 pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i,
303 mvm->trans->num_rx_queues);
304 aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
305 ((u64)pn[4] << 8) |
306 ((u64)pn[3] << 16) |
307 ((u64)pn[2] << 24) |
308 ((u64)pn[1] << 32) |
309 ((u64)pn[0] << 40));
310 }
311
312 rcu_read_unlock();
313 } else {
314 for (i = 0; i < IWL_NUM_RSC; i++) {
315 u8 *pn = seq.ccmp.pn;
316
317 ieee80211_get_key_rx_seq(key, i, &seq);
318 aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
319 ((u64)pn[4] << 8) |
320 ((u64)pn[3] << 16) |
321 ((u64)pn[2] << 24) |
322 ((u64)pn[1] << 32) |
323 ((u64)pn[0] << 40));
324 }
325 }
326 data->have_rsc_tsc = true;
327 break;
328 }
329 }
330
331 struct wowlan_key_rsc_v5_data {
332 struct iwl_wowlan_rsc_tsc_params_cmd *rsc;
333 bool have_rsc;
334 int gtks;
335 int gtk_ids[4];
336 };
337
iwl_mvm_wowlan_get_rsc_v5_data(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key,void * _data)338 static void iwl_mvm_wowlan_get_rsc_v5_data(struct ieee80211_hw *hw,
339 struct ieee80211_vif *vif,
340 struct ieee80211_sta *sta,
341 struct ieee80211_key_conf *key,
342 void *_data)
343 {
344 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
345 struct wowlan_key_rsc_v5_data *data = _data;
346 struct ieee80211_key_seq seq;
347 __le64 *rsc;
348 int i;
349
350 /* only for ciphers that can be PTK/GTK */
351 switch (key->cipher) {
352 default:
353 return;
354 case WLAN_CIPHER_SUITE_TKIP:
355 case WLAN_CIPHER_SUITE_CCMP:
356 case WLAN_CIPHER_SUITE_GCMP:
357 case WLAN_CIPHER_SUITE_GCMP_256:
358 break;
359 }
360
361 if (sta) {
362 rsc = data->rsc->ucast_rsc;
363 } else {
364 if (WARN_ON(data->gtks >= ARRAY_SIZE(data->gtk_ids)))
365 return;
366 data->gtk_ids[data->gtks] = key->keyidx;
367 rsc = data->rsc->mcast_rsc[data->gtks % 2];
368 if (WARN_ON(key->keyidx >=
369 ARRAY_SIZE(data->rsc->mcast_key_id_map)))
370 return;
371 data->rsc->mcast_key_id_map[key->keyidx] = data->gtks % 2;
372 if (data->gtks >= 2) {
373 int prev = data->gtks - 2;
374 int prev_idx = data->gtk_ids[prev];
375
376 data->rsc->mcast_key_id_map[prev_idx] =
377 IWL_MCAST_KEY_MAP_INVALID;
378 }
379 data->gtks++;
380 }
381
382 switch (key->cipher) {
383 default:
384 WARN_ON(1);
385 break;
386 case WLAN_CIPHER_SUITE_TKIP:
387
388 /*
389 * For non-QoS this relies on the fact that both the uCode and
390 * mac80211 use TID 0 (as they need to to avoid replay attacks)
391 * for checking the IV in the frames.
392 */
393 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
394 ieee80211_get_key_rx_seq(key, i, &seq);
395
396 rsc[i] = cpu_to_le64(((u64)seq.tkip.iv32 << 16) |
397 seq.tkip.iv16);
398 }
399
400 data->have_rsc = true;
401 break;
402 case WLAN_CIPHER_SUITE_CCMP:
403 case WLAN_CIPHER_SUITE_GCMP:
404 case WLAN_CIPHER_SUITE_GCMP_256:
405 /*
406 * For non-QoS this relies on the fact that both the uCode and
407 * mac80211/our RX code use TID 0 for checking the PN.
408 */
409 if (sta) {
410 struct iwl_mvm_sta *mvmsta;
411 struct iwl_mvm_key_pn *ptk_pn;
412 const u8 *pn;
413
414 mvmsta = iwl_mvm_sta_from_mac80211(sta);
415 rcu_read_lock();
416 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]);
417 if (WARN_ON(!ptk_pn)) {
418 rcu_read_unlock();
419 break;
420 }
421
422 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
423 pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i,
424 mvm->trans->num_rx_queues);
425 rsc[i] = cpu_to_le64((u64)pn[5] |
426 ((u64)pn[4] << 8) |
427 ((u64)pn[3] << 16) |
428 ((u64)pn[2] << 24) |
429 ((u64)pn[1] << 32) |
430 ((u64)pn[0] << 40));
431 }
432
433 rcu_read_unlock();
434 } else {
435 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
436 u8 *pn = seq.ccmp.pn;
437
438 ieee80211_get_key_rx_seq(key, i, &seq);
439 rsc[i] = cpu_to_le64((u64)pn[5] |
440 ((u64)pn[4] << 8) |
441 ((u64)pn[3] << 16) |
442 ((u64)pn[2] << 24) |
443 ((u64)pn[1] << 32) |
444 ((u64)pn[0] << 40));
445 }
446 }
447 data->have_rsc = true;
448 break;
449 }
450 }
451
iwl_mvm_wowlan_config_rsc_tsc(struct iwl_mvm * mvm,struct ieee80211_vif * vif)452 static int iwl_mvm_wowlan_config_rsc_tsc(struct iwl_mvm *mvm,
453 struct ieee80211_vif *vif)
454 {
455 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
456 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TSC_RSC_PARAM,
457 IWL_FW_CMD_VER_UNKNOWN);
458 int ret;
459
460 if (ver == 5) {
461 struct wowlan_key_rsc_v5_data data = {};
462 int i;
463
464 data.rsc = kmalloc(sizeof(*data.rsc), GFP_KERNEL);
465 if (!data.rsc)
466 return -ENOMEM;
467
468 memset(data.rsc, 0xff, sizeof(*data.rsc));
469
470 for (i = 0; i < ARRAY_SIZE(data.rsc->mcast_key_id_map); i++)
471 data.rsc->mcast_key_id_map[i] =
472 IWL_MCAST_KEY_MAP_INVALID;
473 data.rsc->sta_id = cpu_to_le32(mvmvif->ap_sta_id);
474
475 ieee80211_iter_keys(mvm->hw, vif,
476 iwl_mvm_wowlan_get_rsc_v5_data,
477 &data);
478
479 if (data.have_rsc)
480 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM,
481 CMD_ASYNC, sizeof(*data.rsc),
482 data.rsc);
483 else
484 ret = 0;
485 kfree(data.rsc);
486 } else if (ver == 4 || ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN) {
487 struct wowlan_key_rsc_tsc_data data = {};
488 int size;
489
490 data.rsc_tsc = kzalloc(sizeof(*data.rsc_tsc), GFP_KERNEL);
491 if (!data.rsc_tsc)
492 return -ENOMEM;
493
494 if (ver == 4) {
495 size = sizeof(*data.rsc_tsc);
496 data.rsc_tsc->sta_id = cpu_to_le32(mvmvif->ap_sta_id);
497 } else {
498 /* ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN */
499 size = sizeof(data.rsc_tsc->params);
500 }
501
502 ieee80211_iter_keys(mvm->hw, vif,
503 iwl_mvm_wowlan_get_rsc_tsc_data,
504 &data);
505
506 if (data.have_rsc_tsc)
507 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM,
508 CMD_ASYNC, size,
509 data.rsc_tsc);
510 else
511 ret = 0;
512 kfree(data.rsc_tsc);
513 } else {
514 ret = 0;
515 WARN_ON_ONCE(1);
516 }
517
518 return ret;
519 }
520
521 struct wowlan_key_tkip_data {
522 struct iwl_wowlan_tkip_params_cmd tkip;
523 bool have_tkip_keys;
524 };
525
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)526 static void iwl_mvm_wowlan_get_tkip_data(struct ieee80211_hw *hw,
527 struct ieee80211_vif *vif,
528 struct ieee80211_sta *sta,
529 struct ieee80211_key_conf *key,
530 void *_data)
531 {
532 struct wowlan_key_tkip_data *data = _data;
533 struct iwl_p1k_cache *rx_p1ks;
534 u8 *rx_mic_key;
535 struct ieee80211_key_seq seq;
536 u32 cur_rx_iv32 = 0;
537 u16 p1k[IWL_P1K_SIZE];
538 int i;
539
540 switch (key->cipher) {
541 default:
542 break;
543 case WLAN_CIPHER_SUITE_TKIP:
544 if (sta) {
545 u64 pn64;
546
547 rx_p1ks = data->tkip.rx_uni;
548
549 pn64 = atomic64_read(&key->tx_pn);
550
551 ieee80211_get_tkip_p1k_iv(key, TKIP_PN_TO_IV32(pn64),
552 p1k);
553 iwl_mvm_convert_p1k(p1k, data->tkip.tx.p1k);
554
555 memcpy(data->tkip.mic_keys.tx,
556 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
557 IWL_MIC_KEY_SIZE);
558
559 rx_mic_key = data->tkip.mic_keys.rx_unicast;
560 } else {
561 rx_p1ks = data->tkip.rx_multi;
562 rx_mic_key = data->tkip.mic_keys.rx_mcast;
563 }
564
565 for (i = 0; i < IWL_NUM_RSC; i++) {
566 /* wrapping isn't allowed, AP must rekey */
567 if (seq.tkip.iv32 > cur_rx_iv32)
568 cur_rx_iv32 = seq.tkip.iv32;
569 }
570
571 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
572 cur_rx_iv32, p1k);
573 iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k);
574 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
575 cur_rx_iv32 + 1, p1k);
576 iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k);
577
578 memcpy(rx_mic_key,
579 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
580 IWL_MIC_KEY_SIZE);
581
582 data->have_tkip_keys = true;
583 break;
584 }
585 }
586
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_BIP_GMAC_256:
603 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
604 data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_GCMP);
605 return;
606 case WLAN_CIPHER_SUITE_AES_CMAC:
607 data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_CCM);
608 return;
609 case WLAN_CIPHER_SUITE_CCMP:
610 if (!sta)
611 data->kek_kck_cmd->gtk_cipher =
612 cpu_to_le32(STA_KEY_FLG_CCM);
613 break;
614 case WLAN_CIPHER_SUITE_GCMP:
615 case WLAN_CIPHER_SUITE_GCMP_256:
616 if (!sta)
617 data->kek_kck_cmd->gtk_cipher =
618 cpu_to_le32(STA_KEY_FLG_GCMP);
619 break;
620 }
621 }
622
iwl_mvm_send_patterns_v1(struct iwl_mvm * mvm,struct cfg80211_wowlan * wowlan)623 static int iwl_mvm_send_patterns_v1(struct iwl_mvm *mvm,
624 struct cfg80211_wowlan *wowlan)
625 {
626 struct iwl_wowlan_patterns_cmd_v1 *pattern_cmd;
627 struct iwl_host_cmd cmd = {
628 .id = WOWLAN_PATTERNS,
629 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
630 };
631 int i, err;
632
633 if (!wowlan->n_patterns)
634 return 0;
635
636 cmd.len[0] = struct_size(pattern_cmd, patterns, wowlan->n_patterns);
637
638 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
639 if (!pattern_cmd)
640 return -ENOMEM;
641
642 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
643
644 for (i = 0; i < wowlan->n_patterns; i++) {
645 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
646
647 memcpy(&pattern_cmd->patterns[i].mask,
648 wowlan->patterns[i].mask, mask_len);
649 memcpy(&pattern_cmd->patterns[i].pattern,
650 wowlan->patterns[i].pattern,
651 wowlan->patterns[i].pattern_len);
652 pattern_cmd->patterns[i].mask_size = mask_len;
653 pattern_cmd->patterns[i].pattern_size =
654 wowlan->patterns[i].pattern_len;
655 }
656
657 cmd.data[0] = pattern_cmd;
658 err = iwl_mvm_send_cmd(mvm, &cmd);
659 kfree(pattern_cmd);
660 return err;
661 }
662
iwl_mvm_send_patterns(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct cfg80211_wowlan * wowlan)663 static int iwl_mvm_send_patterns(struct iwl_mvm *mvm,
664 struct ieee80211_vif *vif,
665 struct cfg80211_wowlan *wowlan)
666 {
667 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
668 struct iwl_wowlan_patterns_cmd *pattern_cmd;
669 struct iwl_host_cmd cmd = {
670 .id = WOWLAN_PATTERNS,
671 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
672 };
673 int i, err;
674 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id,
675 IWL_FW_CMD_VER_UNKNOWN);
676
677 if (!wowlan->n_patterns)
678 return 0;
679
680 cmd.len[0] = sizeof(*pattern_cmd) +
681 wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern_v2);
682
683 pattern_cmd = kzalloc(cmd.len[0], GFP_KERNEL);
684 if (!pattern_cmd)
685 return -ENOMEM;
686
687 pattern_cmd->n_patterns = wowlan->n_patterns;
688 if (ver >= 3)
689 pattern_cmd->sta_id = mvmvif->ap_sta_id;
690
691 for (i = 0; i < wowlan->n_patterns; i++) {
692 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
693
694 pattern_cmd->patterns[i].pattern_type =
695 WOWLAN_PATTERN_TYPE_BITMASK;
696
697 memcpy(&pattern_cmd->patterns[i].u.bitmask.mask,
698 wowlan->patterns[i].mask, mask_len);
699 memcpy(&pattern_cmd->patterns[i].u.bitmask.pattern,
700 wowlan->patterns[i].pattern,
701 wowlan->patterns[i].pattern_len);
702 pattern_cmd->patterns[i].u.bitmask.mask_size = mask_len;
703 pattern_cmd->patterns[i].u.bitmask.pattern_size =
704 wowlan->patterns[i].pattern_len;
705 }
706
707 cmd.data[0] = pattern_cmd;
708 err = iwl_mvm_send_cmd(mvm, &cmd);
709 kfree(pattern_cmd);
710 return err;
711 }
712
iwl_mvm_d3_reprogram(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * ap_sta)713 static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
714 struct ieee80211_sta *ap_sta)
715 {
716 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
717 struct ieee80211_chanctx_conf *ctx;
718 u8 chains_static, chains_dynamic;
719 struct cfg80211_chan_def chandef;
720 int ret, i;
721 struct iwl_binding_cmd_v1 binding_cmd = {};
722 struct iwl_time_quota_cmd quota_cmd = {};
723 struct iwl_time_quota_data *quota;
724 u32 status;
725
726 if (WARN_ON_ONCE(iwl_mvm_is_cdb_supported(mvm)))
727 return -EINVAL;
728
729 /* add back the PHY */
730 if (WARN_ON(!mvmvif->phy_ctxt))
731 return -EINVAL;
732
733 rcu_read_lock();
734 ctx = rcu_dereference(vif->bss_conf.chanctx_conf);
735 if (WARN_ON(!ctx)) {
736 rcu_read_unlock();
737 return -EINVAL;
738 }
739 chandef = ctx->def;
740 chains_static = ctx->rx_chains_static;
741 chains_dynamic = ctx->rx_chains_dynamic;
742 rcu_read_unlock();
743
744 ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt, &chandef,
745 chains_static, chains_dynamic);
746 if (ret)
747 return ret;
748
749 /* add back the MAC */
750 mvmvif->uploaded = false;
751
752 if (WARN_ON(!vif->cfg.assoc))
753 return -EINVAL;
754
755 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
756 if (ret)
757 return ret;
758
759 /* add back binding - XXX refactor? */
760 binding_cmd.id_and_color =
761 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
762 mvmvif->phy_ctxt->color));
763 binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD);
764 binding_cmd.phy =
765 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
766 mvmvif->phy_ctxt->color));
767 binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
768 mvmvif->color));
769 for (i = 1; i < MAX_MACS_IN_BINDING; i++)
770 binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID);
771
772 status = 0;
773 ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD,
774 IWL_BINDING_CMD_SIZE_V1, &binding_cmd,
775 &status);
776 if (ret) {
777 IWL_ERR(mvm, "Failed to add binding: %d\n", ret);
778 return ret;
779 }
780
781 if (status) {
782 IWL_ERR(mvm, "Binding command failed: %u\n", status);
783 return -EIO;
784 }
785
786 ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false, 0);
787 if (ret)
788 return ret;
789 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], ap_sta);
790
791 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
792 if (ret)
793 return ret;
794
795 /* and some quota */
796 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, 0);
797 quota->id_and_color =
798 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
799 mvmvif->phy_ctxt->color));
800 quota->quota = cpu_to_le32(IWL_MVM_MAX_QUOTA);
801 quota->max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA);
802
803 for (i = 1; i < MAX_BINDINGS; i++) {
804 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, i);
805 quota->id_and_color = cpu_to_le32(FW_CTXT_INVALID);
806 }
807
808 ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0,
809 iwl_mvm_quota_cmd_size(mvm), "a_cmd);
810 if (ret)
811 IWL_ERR(mvm, "Failed to send quota: %d\n", ret);
812
813 if (iwl_mvm_is_lar_supported(mvm) && iwl_mvm_init_fw_regd(mvm))
814 IWL_ERR(mvm, "Failed to initialize D3 LAR information\n");
815
816 return 0;
817 }
818
iwl_mvm_get_last_nonqos_seq(struct iwl_mvm * mvm,struct ieee80211_vif * vif)819 static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm,
820 struct ieee80211_vif *vif)
821 {
822 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
823 struct iwl_nonqos_seq_query_cmd query_cmd = {
824 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET),
825 .mac_id_n_color =
826 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
827 mvmvif->color)),
828 };
829 struct iwl_host_cmd cmd = {
830 .id = NON_QOS_TX_COUNTER_CMD,
831 .flags = CMD_WANT_SKB,
832 };
833 int err;
834 u32 size;
835
836 cmd.data[0] = &query_cmd;
837 cmd.len[0] = sizeof(query_cmd);
838
839 err = iwl_mvm_send_cmd(mvm, &cmd);
840 if (err)
841 return err;
842
843 size = iwl_rx_packet_payload_len(cmd.resp_pkt);
844 if (size < sizeof(__le16)) {
845 err = -EINVAL;
846 } else {
847 err = le16_to_cpup((__le16 *)cmd.resp_pkt->data);
848 /* firmware returns next, not last-used seqno */
849 err = (u16) (err - 0x10);
850 }
851
852 iwl_free_resp(&cmd);
853 return err;
854 }
855
iwl_mvm_set_last_nonqos_seq(struct iwl_mvm * mvm,struct ieee80211_vif * vif)856 void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
857 {
858 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
859 struct iwl_nonqos_seq_query_cmd query_cmd = {
860 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET),
861 .mac_id_n_color =
862 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
863 mvmvif->color)),
864 .value = cpu_to_le16(mvmvif->seqno),
865 };
866
867 /* return if called during restart, not resume from D3 */
868 if (!mvmvif->seqno_valid)
869 return;
870
871 mvmvif->seqno_valid = false;
872
873 if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0,
874 sizeof(query_cmd), &query_cmd))
875 IWL_ERR(mvm, "failed to set non-QoS seqno\n");
876 }
877
iwl_mvm_switch_to_d3(struct iwl_mvm * mvm)878 static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm)
879 {
880 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
881
882 iwl_mvm_stop_device(mvm);
883 /*
884 * Set the HW restart bit -- this is mostly true as we're
885 * going to load new firmware and reprogram that, though
886 * the reprogramming is going to be manual to avoid adding
887 * all the MACs that aren't support.
888 * We don't have to clear up everything though because the
889 * reprogramming is manual. When we resume, we'll actually
890 * go through a proper restart sequence again to switch
891 * back to the runtime firmware image.
892 */
893 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
894
895 /* the fw is reset, so all the keys are cleared */
896 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
897
898 mvm->ptk_ivlen = 0;
899 mvm->ptk_icvlen = 0;
900 mvm->ptk_ivlen = 0;
901 mvm->ptk_icvlen = 0;
902
903 return iwl_mvm_load_d3_fw(mvm);
904 }
905
906 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)907 iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm,
908 struct cfg80211_wowlan *wowlan,
909 struct iwl_wowlan_config_cmd *wowlan_config_cmd,
910 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
911 struct ieee80211_sta *ap_sta)
912 {
913 struct iwl_mvm_sta *mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
914
915 /* TODO: wowlan_config_cmd->wowlan_ba_teardown_tids */
916
917 wowlan_config_cmd->is_11n_connection =
918 ap_sta->deflink.ht_cap.ht_supported;
919 wowlan_config_cmd->flags = ENABLE_L3_FILTERING |
920 ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING;
921
922 if (iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_CONFIGURATION, 0) < 6) {
923 /* Query the last used seqno and set it */
924 int ret = iwl_mvm_get_last_nonqos_seq(mvm, vif);
925
926 if (ret < 0)
927 return ret;
928
929 wowlan_config_cmd->non_qos_seq = cpu_to_le16(ret);
930 }
931
932 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, wowlan_config_cmd);
933
934 if (wowlan->disconnect)
935 wowlan_config_cmd->wakeup_filter |=
936 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
937 IWL_WOWLAN_WAKEUP_LINK_CHANGE);
938 if (wowlan->magic_pkt)
939 wowlan_config_cmd->wakeup_filter |=
940 cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET);
941 if (wowlan->gtk_rekey_failure)
942 wowlan_config_cmd->wakeup_filter |=
943 cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
944 if (wowlan->eap_identity_req)
945 wowlan_config_cmd->wakeup_filter |=
946 cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ);
947 if (wowlan->four_way_handshake)
948 wowlan_config_cmd->wakeup_filter |=
949 cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
950 if (wowlan->n_patterns)
951 wowlan_config_cmd->wakeup_filter |=
952 cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH);
953
954 if (wowlan->rfkill_release)
955 wowlan_config_cmd->wakeup_filter |=
956 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
957
958 if (wowlan->tcp) {
959 /*
960 * Set the "link change" (really "link lost") flag as well
961 * since that implies losing the TCP connection.
962 */
963 wowlan_config_cmd->wakeup_filter |=
964 cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS |
965 IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE |
966 IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET |
967 IWL_WOWLAN_WAKEUP_LINK_CHANGE);
968 }
969
970 if (wowlan->any) {
971 wowlan_config_cmd->wakeup_filter |=
972 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
973 IWL_WOWLAN_WAKEUP_LINK_CHANGE |
974 IWL_WOWLAN_WAKEUP_RX_FRAME |
975 IWL_WOWLAN_WAKEUP_BCN_FILTERING);
976 }
977
978 return 0;
979 }
980
iwl_mvm_wowlan_config_key_params(struct iwl_mvm * mvm,struct ieee80211_vif * vif)981 static int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm,
982 struct ieee80211_vif *vif)
983 {
984 bool unified = fw_has_capa(&mvm->fw->ucode_capa,
985 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
986 struct wowlan_key_reprogram_data key_data = {};
987 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
988 int ret;
989 u8 cmd_ver;
990 size_t cmd_size;
991
992 if (!unified) {
993 /*
994 * if we have to configure keys, call ieee80211_iter_keys(),
995 * as we need non-atomic context in order to take the
996 * required locks.
997 */
998 /*
999 * Note that currently we don't use CMD_ASYNC in the iterator.
1000 * In case of key_data.configure_keys, all the configured
1001 * commands are SYNC, and iwl_mvm_wowlan_program_keys() will
1002 * take care of locking/unlocking mvm->mutex.
1003 */
1004 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_program_keys,
1005 &key_data);
1006
1007 if (key_data.error)
1008 return -EIO;
1009 }
1010
1011 ret = iwl_mvm_wowlan_config_rsc_tsc(mvm, vif);
1012 if (ret)
1013 return ret;
1014
1015 if (!fw_has_api(&mvm->fw->ucode_capa,
1016 IWL_UCODE_TLV_API_TKIP_MIC_KEYS)) {
1017 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TKIP_PARAM,
1018 IWL_FW_CMD_VER_UNKNOWN);
1019 struct wowlan_key_tkip_data tkip_data = {};
1020 int size;
1021
1022 if (ver == 2) {
1023 size = sizeof(tkip_data.tkip);
1024 tkip_data.tkip.sta_id =
1025 cpu_to_le32(mvmvif->ap_sta_id);
1026 } else if (ver == 1 || ver == IWL_FW_CMD_VER_UNKNOWN) {
1027 size = sizeof(struct iwl_wowlan_tkip_params_cmd_ver_1);
1028 } else {
1029 WARN_ON_ONCE(1);
1030 return -EINVAL;
1031 }
1032
1033 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_get_tkip_data,
1034 &tkip_data);
1035
1036 if (tkip_data.have_tkip_keys) {
1037 /* send relevant data according to CMD version */
1038 ret = iwl_mvm_send_cmd_pdu(mvm,
1039 WOWLAN_TKIP_PARAM,
1040 CMD_ASYNC, size,
1041 &tkip_data.tkip);
1042 if (ret)
1043 return ret;
1044 }
1045 }
1046
1047 /* configure rekey data only if offloaded rekey is supported (d3) */
1048 if (mvmvif->rekey_data.valid) {
1049 struct iwl_wowlan_kek_kck_material_cmd_v4 kek_kck_cmd = {};
1050 struct iwl_wowlan_kek_kck_material_cmd_v4 *_kek_kck_cmd =
1051 &kek_kck_cmd;
1052 struct wowlan_key_gtk_type_iter gtk_type_data = {
1053 .kek_kck_cmd = _kek_kck_cmd,
1054 };
1055
1056 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,
1057 WOWLAN_KEK_KCK_MATERIAL,
1058 IWL_FW_CMD_VER_UNKNOWN);
1059 if (WARN_ON(cmd_ver != 2 && cmd_ver != 3 && cmd_ver != 4 &&
1060 cmd_ver != IWL_FW_CMD_VER_UNKNOWN))
1061 return -EINVAL;
1062
1063 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_gtk_type_iter,
1064 >k_type_data);
1065
1066 memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck,
1067 mvmvif->rekey_data.kck_len);
1068 kek_kck_cmd.kck_len = cpu_to_le16(mvmvif->rekey_data.kck_len);
1069 memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek,
1070 mvmvif->rekey_data.kek_len);
1071 kek_kck_cmd.kek_len = cpu_to_le16(mvmvif->rekey_data.kek_len);
1072 kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr;
1073 kek_kck_cmd.akm = cpu_to_le32(mvmvif->rekey_data.akm);
1074 kek_kck_cmd.sta_id = cpu_to_le32(mvmvif->ap_sta_id);
1075
1076 if (cmd_ver == 4) {
1077 cmd_size = sizeof(struct iwl_wowlan_kek_kck_material_cmd_v4);
1078 } else {
1079 if (cmd_ver == 3)
1080 cmd_size =
1081 sizeof(struct iwl_wowlan_kek_kck_material_cmd_v3);
1082 else
1083 cmd_size =
1084 sizeof(struct iwl_wowlan_kek_kck_material_cmd_v2);
1085 /* skip the sta_id at the beginning */
1086 _kek_kck_cmd = (void *)
1087 ((u8 *)_kek_kck_cmd + sizeof(kek_kck_cmd.sta_id));
1088 }
1089
1090 IWL_DEBUG_WOWLAN(mvm, "setting akm %d\n",
1091 mvmvif->rekey_data.akm);
1092
1093 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_KEK_KCK_MATERIAL,
1094 CMD_ASYNC, cmd_size, _kek_kck_cmd);
1095 if (ret)
1096 return ret;
1097 }
1098
1099 return 0;
1100 }
1101
1102 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)1103 iwl_mvm_wowlan_config(struct iwl_mvm *mvm,
1104 struct cfg80211_wowlan *wowlan,
1105 struct iwl_wowlan_config_cmd *wowlan_config_cmd,
1106 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
1107 struct ieee80211_sta *ap_sta)
1108 {
1109 int ret;
1110 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1111 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1112
1113 mvm->offload_tid = wowlan_config_cmd->offloading_tid;
1114
1115 if (!unified_image) {
1116 ret = iwl_mvm_switch_to_d3(mvm);
1117 if (ret)
1118 return ret;
1119
1120 ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta);
1121 if (ret)
1122 return ret;
1123 }
1124
1125 /*
1126 * This needs to be unlocked due to lock ordering
1127 * constraints. Since we're in the suspend path
1128 * that isn't really a problem though.
1129 */
1130 mutex_unlock(&mvm->mutex);
1131 ret = iwl_mvm_wowlan_config_key_params(mvm, vif);
1132 mutex_lock(&mvm->mutex);
1133 if (ret)
1134 return ret;
1135
1136 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0,
1137 sizeof(*wowlan_config_cmd),
1138 wowlan_config_cmd);
1139 if (ret)
1140 return ret;
1141
1142 if (fw_has_api(&mvm->fw->ucode_capa,
1143 IWL_UCODE_TLV_API_WOWLAN_TCP_SYN_WAKE))
1144 ret = iwl_mvm_send_patterns(mvm, vif, wowlan);
1145 else
1146 ret = iwl_mvm_send_patterns_v1(mvm, wowlan);
1147 if (ret)
1148 return ret;
1149
1150 return iwl_mvm_send_proto_offload(mvm, vif, false, true, 0);
1151 }
1152
1153 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)1154 iwl_mvm_netdetect_config(struct iwl_mvm *mvm,
1155 struct cfg80211_wowlan *wowlan,
1156 struct cfg80211_sched_scan_request *nd_config,
1157 struct ieee80211_vif *vif)
1158 {
1159 int ret;
1160 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1161 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1162
1163 if (!unified_image) {
1164 ret = iwl_mvm_switch_to_d3(mvm);
1165 if (ret)
1166 return ret;
1167 } else {
1168 /* In theory, we wouldn't have to stop a running sched
1169 * scan in order to start another one (for
1170 * net-detect). But in practice this doesn't seem to
1171 * work properly, so stop any running sched_scan now.
1172 */
1173 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
1174 if (ret)
1175 return ret;
1176 }
1177
1178 ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies,
1179 IWL_MVM_SCAN_NETDETECT);
1180 if (ret)
1181 return ret;
1182
1183 if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels))
1184 return -EBUSY;
1185
1186 /* save the sched scan matchsets... */
1187 if (nd_config->n_match_sets) {
1188 mvm->nd_match_sets = kmemdup(nd_config->match_sets,
1189 sizeof(*nd_config->match_sets) *
1190 nd_config->n_match_sets,
1191 GFP_KERNEL);
1192 if (mvm->nd_match_sets)
1193 mvm->n_nd_match_sets = nd_config->n_match_sets;
1194 }
1195
1196 /* ...and the sched scan channels for later reporting */
1197 mvm->nd_channels = kmemdup(nd_config->channels,
1198 sizeof(*nd_config->channels) *
1199 nd_config->n_channels,
1200 GFP_KERNEL);
1201 if (mvm->nd_channels)
1202 mvm->n_nd_channels = nd_config->n_channels;
1203
1204 return 0;
1205 }
1206
iwl_mvm_free_nd(struct iwl_mvm * mvm)1207 static void iwl_mvm_free_nd(struct iwl_mvm *mvm)
1208 {
1209 kfree(mvm->nd_match_sets);
1210 mvm->nd_match_sets = NULL;
1211 mvm->n_nd_match_sets = 0;
1212 kfree(mvm->nd_channels);
1213 mvm->nd_channels = NULL;
1214 mvm->n_nd_channels = 0;
1215 }
1216
__iwl_mvm_suspend(struct ieee80211_hw * hw,struct cfg80211_wowlan * wowlan,bool test)1217 static int __iwl_mvm_suspend(struct ieee80211_hw *hw,
1218 struct cfg80211_wowlan *wowlan,
1219 bool test)
1220 {
1221 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1222 struct ieee80211_vif *vif = NULL;
1223 struct iwl_mvm_vif *mvmvif = NULL;
1224 struct ieee80211_sta *ap_sta = NULL;
1225 struct iwl_d3_manager_config d3_cfg_cmd_data = {
1226 /*
1227 * Program the minimum sleep time to 10 seconds, as many
1228 * platforms have issues processing a wakeup signal while
1229 * still being in the process of suspending.
1230 */
1231 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000),
1232 };
1233 struct iwl_host_cmd d3_cfg_cmd = {
1234 .id = D3_CONFIG_CMD,
1235 .flags = CMD_WANT_SKB | CMD_SEND_IN_D3,
1236 .data[0] = &d3_cfg_cmd_data,
1237 .len[0] = sizeof(d3_cfg_cmd_data),
1238 };
1239 int ret;
1240 int len __maybe_unused;
1241 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1242 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1243
1244 if (!wowlan) {
1245 /*
1246 * mac80211 shouldn't get here, but for D3 test
1247 * it doesn't warrant a warning
1248 */
1249 WARN_ON(!test);
1250 return -EINVAL;
1251 }
1252
1253 mutex_lock(&mvm->mutex);
1254
1255 set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
1256
1257 synchronize_net();
1258
1259 vif = iwl_mvm_get_bss_vif(mvm);
1260 if (IS_ERR_OR_NULL(vif)) {
1261 ret = 1;
1262 goto out_noreset;
1263 }
1264
1265 mvmvif = iwl_mvm_vif_from_mac80211(vif);
1266
1267 if (mvmvif->ap_sta_id == IWL_MVM_INVALID_STA) {
1268 /* if we're not associated, this must be netdetect */
1269 if (!wowlan->nd_config) {
1270 ret = 1;
1271 goto out_noreset;
1272 }
1273
1274 ret = iwl_mvm_netdetect_config(
1275 mvm, wowlan, wowlan->nd_config, vif);
1276 if (ret)
1277 goto out;
1278
1279 mvm->net_detect = true;
1280 } else {
1281 struct iwl_wowlan_config_cmd wowlan_config_cmd = {};
1282
1283 wowlan_config_cmd.sta_id = mvmvif->ap_sta_id;
1284
1285 ap_sta = rcu_dereference_protected(
1286 mvm->fw_id_to_mac_id[mvmvif->ap_sta_id],
1287 lockdep_is_held(&mvm->mutex));
1288 if (IS_ERR_OR_NULL(ap_sta)) {
1289 ret = -EINVAL;
1290 goto out_noreset;
1291 }
1292
1293 ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1294 vif, mvmvif, ap_sta);
1295 if (ret)
1296 goto out_noreset;
1297 ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1298 vif, mvmvif, ap_sta);
1299 if (ret)
1300 goto out;
1301
1302 mvm->net_detect = false;
1303 }
1304
1305 ret = iwl_mvm_power_update_device(mvm);
1306 if (ret)
1307 goto out;
1308
1309 ret = iwl_mvm_power_update_mac(mvm);
1310 if (ret)
1311 goto out;
1312
1313 #ifdef CONFIG_IWLWIFI_DEBUGFS
1314 if (mvm->d3_wake_sysassert)
1315 d3_cfg_cmd_data.wakeup_flags |=
1316 cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR);
1317 #endif
1318
1319 /*
1320 * Prior to 9000 device family the driver needs to stop the dbg
1321 * recording before entering D3. In later devices the FW stops the
1322 * recording automatically.
1323 */
1324 if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_9000)
1325 iwl_fw_dbg_stop_restart_recording(&mvm->fwrt, NULL, true);
1326
1327 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_D3;
1328
1329 /* must be last -- this switches firmware state */
1330 ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd);
1331 if (ret)
1332 goto out;
1333 #ifdef CONFIG_IWLWIFI_DEBUGFS
1334 len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt);
1335 if (len >= sizeof(u32)) {
1336 mvm->d3_test_pme_ptr =
1337 le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data);
1338 }
1339 #endif
1340 iwl_free_resp(&d3_cfg_cmd);
1341
1342 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1343
1344 ret = iwl_trans_d3_suspend(mvm->trans, test, !unified_image);
1345 out:
1346 if (ret < 0) {
1347 iwl_mvm_free_nd(mvm);
1348
1349 if (!unified_image) {
1350 if (mvm->fw_restart > 0) {
1351 mvm->fw_restart--;
1352 ieee80211_restart_hw(mvm->hw);
1353 }
1354 }
1355
1356 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
1357 }
1358 out_noreset:
1359 mutex_unlock(&mvm->mutex);
1360
1361 return ret;
1362 }
1363
iwl_mvm_suspend(struct ieee80211_hw * hw,struct cfg80211_wowlan * wowlan)1364 int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
1365 {
1366 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1367
1368 iwl_mvm_pause_tcm(mvm, true);
1369
1370 iwl_fw_runtime_suspend(&mvm->fwrt);
1371
1372 return __iwl_mvm_suspend(hw, wowlan, false);
1373 }
1374
1375 /* converted data from the different status responses */
1376 struct iwl_wowlan_status_data {
1377 u64 replay_ctr;
1378 u32 num_of_gtk_rekeys;
1379 u32 received_beacons;
1380 u32 wakeup_reasons;
1381 u32 wake_packet_length;
1382 u32 wake_packet_bufsize;
1383 u16 pattern_number;
1384 u16 non_qos_seq_ctr;
1385 u16 qos_seq_ctr[8];
1386 u8 tid_tear_down;
1387
1388 struct {
1389 /* including RX MIC key for TKIP */
1390 u8 key[WOWLAN_KEY_MAX_SIZE];
1391 u8 len;
1392 u8 flags;
1393 } gtk;
1394
1395 struct {
1396 /*
1397 * We store both the TKIP and AES representations
1398 * coming from the firmware because we decode the
1399 * data from there before we iterate the keys and
1400 * know which one we need.
1401 */
1402 struct {
1403 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT];
1404 } tkip, aes;
1405
1406 /*
1407 * We use -1 for when we have valid data but don't know
1408 * the key ID from firmware, and thus it needs to be
1409 * installed with the last key (depending on rekeying).
1410 */
1411 s8 key_id;
1412 bool valid;
1413 } gtk_seq[2];
1414
1415 struct {
1416 /* Same as above */
1417 struct {
1418 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT];
1419 u64 tx_pn;
1420 } tkip, aes;
1421 } ptk;
1422
1423 struct {
1424 u64 ipn;
1425 u8 key[WOWLAN_KEY_MAX_SIZE];
1426 u8 len;
1427 u8 flags;
1428 } igtk;
1429
1430 u8 *wake_packet;
1431 };
1432
iwl_mvm_report_wakeup_reasons(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_wowlan_status_data * status)1433 static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm,
1434 struct ieee80211_vif *vif,
1435 struct iwl_wowlan_status_data *status)
1436 {
1437 struct sk_buff *pkt = NULL;
1438 struct cfg80211_wowlan_wakeup wakeup = {
1439 .pattern_idx = -1,
1440 };
1441 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
1442 u32 reasons = status->wakeup_reasons;
1443
1444 if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
1445 wakeup_report = NULL;
1446 goto report;
1447 }
1448
1449 pm_wakeup_event(mvm->dev, 0);
1450
1451 if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET)
1452 wakeup.magic_pkt = true;
1453
1454 if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN)
1455 wakeup.pattern_idx =
1456 status->pattern_number;
1457
1458 if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1459 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH))
1460 wakeup.disconnect = true;
1461
1462 if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)
1463 wakeup.gtk_rekey_failure = true;
1464
1465 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
1466 wakeup.rfkill_release = true;
1467
1468 if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST)
1469 wakeup.eap_identity_req = true;
1470
1471 if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE)
1472 wakeup.four_way_handshake = true;
1473
1474 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS)
1475 wakeup.tcp_connlost = true;
1476
1477 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE)
1478 wakeup.tcp_nomoretokens = true;
1479
1480 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET)
1481 wakeup.tcp_match = true;
1482
1483 if (status->wake_packet) {
1484 int pktsize = status->wake_packet_bufsize;
1485 int pktlen = status->wake_packet_length;
1486 const u8 *pktdata = status->wake_packet;
1487 const struct ieee80211_hdr *hdr = (const void *)pktdata;
1488 int truncated = pktlen - pktsize;
1489
1490 /* this would be a firmware bug */
1491 if (WARN_ON_ONCE(truncated < 0))
1492 truncated = 0;
1493
1494 if (ieee80211_is_data(hdr->frame_control)) {
1495 int hdrlen = ieee80211_hdrlen(hdr->frame_control);
1496 int ivlen = 0, icvlen = 4; /* also FCS */
1497
1498 pkt = alloc_skb(pktsize, GFP_KERNEL);
1499 if (!pkt)
1500 goto report;
1501
1502 skb_put_data(pkt, pktdata, hdrlen);
1503 pktdata += hdrlen;
1504 pktsize -= hdrlen;
1505
1506 if (ieee80211_has_protected(hdr->frame_control)) {
1507 /*
1508 * This is unlocked and using gtk_i(c)vlen,
1509 * but since everything is under RTNL still
1510 * that's not really a problem - changing
1511 * it would be difficult.
1512 */
1513 if (is_multicast_ether_addr(hdr->addr1)) {
1514 ivlen = mvm->gtk_ivlen;
1515 icvlen += mvm->gtk_icvlen;
1516 } else {
1517 ivlen = mvm->ptk_ivlen;
1518 icvlen += mvm->ptk_icvlen;
1519 }
1520 }
1521
1522 /* if truncated, FCS/ICV is (partially) gone */
1523 if (truncated >= icvlen) {
1524 icvlen = 0;
1525 truncated -= icvlen;
1526 } else {
1527 icvlen -= truncated;
1528 truncated = 0;
1529 }
1530
1531 pktsize -= ivlen + icvlen;
1532 pktdata += ivlen;
1533
1534 skb_put_data(pkt, pktdata, pktsize);
1535
1536 if (ieee80211_data_to_8023(pkt, vif->addr, vif->type))
1537 goto report;
1538 wakeup.packet = pkt->data;
1539 wakeup.packet_present_len = pkt->len;
1540 wakeup.packet_len = pkt->len - truncated;
1541 wakeup.packet_80211 = false;
1542 } else {
1543 int fcslen = 4;
1544
1545 if (truncated >= 4) {
1546 truncated -= 4;
1547 fcslen = 0;
1548 } else {
1549 fcslen -= truncated;
1550 truncated = 0;
1551 }
1552 pktsize -= fcslen;
1553 wakeup.packet = status->wake_packet;
1554 wakeup.packet_present_len = pktsize;
1555 wakeup.packet_len = pktlen - truncated;
1556 wakeup.packet_80211 = true;
1557 }
1558 }
1559
1560 report:
1561 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
1562 kfree_skb(pkt);
1563 }
1564
iwl_mvm_le64_to_aes_seq(__le64 le_pn,struct ieee80211_key_seq * seq)1565 static void iwl_mvm_le64_to_aes_seq(__le64 le_pn, struct ieee80211_key_seq *seq)
1566 {
1567 u64 pn = le64_to_cpu(le_pn);
1568
1569 seq->ccmp.pn[0] = pn >> 40;
1570 seq->ccmp.pn[1] = pn >> 32;
1571 seq->ccmp.pn[2] = pn >> 24;
1572 seq->ccmp.pn[3] = pn >> 16;
1573 seq->ccmp.pn[4] = pn >> 8;
1574 seq->ccmp.pn[5] = pn;
1575 }
1576
iwl_mvm_aes_sc_to_seq(struct aes_sc * sc,struct ieee80211_key_seq * seq)1577 static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc,
1578 struct ieee80211_key_seq *seq)
1579 {
1580 iwl_mvm_le64_to_aes_seq(sc->pn, seq);
1581 }
1582
iwl_mvm_le64_to_tkip_seq(__le64 le_pn,struct ieee80211_key_seq * seq)1583 static void iwl_mvm_le64_to_tkip_seq(__le64 le_pn, struct ieee80211_key_seq *seq)
1584 {
1585 u64 pn = le64_to_cpu(le_pn);
1586
1587 seq->tkip.iv16 = (u16)pn;
1588 seq->tkip.iv32 = (u32)(pn >> 16);
1589 }
1590
iwl_mvm_tkip_sc_to_seq(struct tkip_sc * sc,struct ieee80211_key_seq * seq)1591 static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc,
1592 struct ieee80211_key_seq *seq)
1593 {
1594 seq->tkip.iv32 = le32_to_cpu(sc->iv32);
1595 seq->tkip.iv16 = le16_to_cpu(sc->iv16);
1596 }
1597
iwl_mvm_set_key_rx_seq_tids(struct ieee80211_key_conf * key,struct ieee80211_key_seq * seq)1598 static void iwl_mvm_set_key_rx_seq_tids(struct ieee80211_key_conf *key,
1599 struct ieee80211_key_seq *seq)
1600 {
1601 int tid;
1602
1603 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++)
1604 ieee80211_set_key_rx_seq(key, tid, &seq[tid]);
1605 }
1606
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)1607 static void iwl_mvm_set_aes_ptk_rx_seq(struct iwl_mvm *mvm,
1608 struct iwl_wowlan_status_data *status,
1609 struct ieee80211_sta *sta,
1610 struct ieee80211_key_conf *key)
1611 {
1612 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1613 struct iwl_mvm_key_pn *ptk_pn;
1614 int tid;
1615
1616 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.aes.seq);
1617
1618 if (!iwl_mvm_has_new_rx_api(mvm))
1619 return;
1620
1621
1622 rcu_read_lock();
1623 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]);
1624 if (WARN_ON(!ptk_pn)) {
1625 rcu_read_unlock();
1626 return;
1627 }
1628
1629 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1630 int i;
1631
1632 for (i = 1; i < mvm->trans->num_rx_queues; i++)
1633 memcpy(ptk_pn->q[i].pn[tid],
1634 status->ptk.aes.seq[tid].ccmp.pn,
1635 IEEE80211_CCMP_PN_LEN);
1636 }
1637 rcu_read_unlock();
1638 }
1639
iwl_mvm_convert_key_counters(struct iwl_wowlan_status_data * status,union iwl_all_tsc_rsc * sc)1640 static void iwl_mvm_convert_key_counters(struct iwl_wowlan_status_data *status,
1641 union iwl_all_tsc_rsc *sc)
1642 {
1643 int i;
1644
1645 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT);
1646 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC);
1647
1648 /* GTK RX counters */
1649 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1650 iwl_mvm_tkip_sc_to_seq(&sc->tkip.multicast_rsc[i],
1651 &status->gtk_seq[0].tkip.seq[i]);
1652 iwl_mvm_aes_sc_to_seq(&sc->aes.multicast_rsc[i],
1653 &status->gtk_seq[0].aes.seq[i]);
1654 }
1655 status->gtk_seq[0].valid = true;
1656 status->gtk_seq[0].key_id = -1;
1657
1658 /* PTK TX counter */
1659 status->ptk.tkip.tx_pn = (u64)le16_to_cpu(sc->tkip.tsc.iv16) |
1660 ((u64)le32_to_cpu(sc->tkip.tsc.iv32) << 16);
1661 status->ptk.aes.tx_pn = le64_to_cpu(sc->aes.tsc.pn);
1662
1663 /* PTK RX counters */
1664 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1665 iwl_mvm_tkip_sc_to_seq(&sc->tkip.unicast_rsc[i],
1666 &status->ptk.tkip.seq[i]);
1667 iwl_mvm_aes_sc_to_seq(&sc->aes.unicast_rsc[i],
1668 &status->ptk.aes.seq[i]);
1669 }
1670 }
1671
1672 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)1673 iwl_mvm_convert_key_counters_v5_gtk_seq(struct iwl_wowlan_status_data *status,
1674 struct iwl_wowlan_all_rsc_tsc_v5 *sc,
1675 unsigned int idx, unsigned int key_id)
1676 {
1677 int tid;
1678
1679 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1680 iwl_mvm_le64_to_tkip_seq(sc->mcast_rsc[idx][tid],
1681 &status->gtk_seq[idx].tkip.seq[tid]);
1682 iwl_mvm_le64_to_aes_seq(sc->mcast_rsc[idx][tid],
1683 &status->gtk_seq[idx].aes.seq[tid]);
1684 }
1685
1686 status->gtk_seq[idx].valid = true;
1687 status->gtk_seq[idx].key_id = key_id;
1688 }
1689
1690 static void
iwl_mvm_convert_key_counters_v5(struct iwl_wowlan_status_data * status,struct iwl_wowlan_all_rsc_tsc_v5 * sc)1691 iwl_mvm_convert_key_counters_v5(struct iwl_wowlan_status_data *status,
1692 struct iwl_wowlan_all_rsc_tsc_v5 *sc)
1693 {
1694 int i, tid;
1695
1696 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT);
1697 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC);
1698 BUILD_BUG_ON(ARRAY_SIZE(sc->mcast_rsc) != ARRAY_SIZE(status->gtk_seq));
1699
1700 /* GTK RX counters */
1701 for (i = 0; i < ARRAY_SIZE(sc->mcast_key_id_map); i++) {
1702 u8 entry = sc->mcast_key_id_map[i];
1703
1704 if (entry < ARRAY_SIZE(sc->mcast_rsc))
1705 iwl_mvm_convert_key_counters_v5_gtk_seq(status, sc,
1706 entry, i);
1707 }
1708
1709 /* PTK TX counters not needed, assigned in device */
1710
1711 /* PTK RX counters */
1712 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1713 iwl_mvm_le64_to_tkip_seq(sc->ucast_rsc[tid],
1714 &status->ptk.tkip.seq[tid]);
1715 iwl_mvm_le64_to_aes_seq(sc->ucast_rsc[tid],
1716 &status->ptk.aes.seq[tid]);
1717 }
1718 }
1719
iwl_mvm_set_key_rx_seq_idx(struct ieee80211_key_conf * key,struct iwl_wowlan_status_data * status,int idx)1720 static void iwl_mvm_set_key_rx_seq_idx(struct ieee80211_key_conf *key,
1721 struct iwl_wowlan_status_data *status,
1722 int idx)
1723 {
1724 switch (key->cipher) {
1725 case WLAN_CIPHER_SUITE_CCMP:
1726 case WLAN_CIPHER_SUITE_GCMP:
1727 case WLAN_CIPHER_SUITE_GCMP_256:
1728 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].aes.seq);
1729 break;
1730 case WLAN_CIPHER_SUITE_TKIP:
1731 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].tkip.seq);
1732 break;
1733 default:
1734 WARN_ON(1);
1735 }
1736 }
1737
iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf * key,struct iwl_wowlan_status_data * status,bool installed)1738 static void iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf *key,
1739 struct iwl_wowlan_status_data *status,
1740 bool installed)
1741 {
1742 int i;
1743
1744 for (i = 0; i < ARRAY_SIZE(status->gtk_seq); i++) {
1745 if (!status->gtk_seq[i].valid)
1746 continue;
1747
1748 /* Handle the case where we know the key ID */
1749 if (status->gtk_seq[i].key_id == key->keyidx) {
1750 s8 new_key_id = -1;
1751
1752 if (status->num_of_gtk_rekeys)
1753 new_key_id = status->gtk.flags &
1754 IWL_WOWLAN_GTK_IDX_MASK;
1755
1756 /* Don't install a new key's value to an old key */
1757 if (new_key_id != key->keyidx)
1758 iwl_mvm_set_key_rx_seq_idx(key, status, i);
1759 continue;
1760 }
1761
1762 /* handle the case where we didn't, last key only */
1763 if (status->gtk_seq[i].key_id == -1 &&
1764 (!status->num_of_gtk_rekeys || installed))
1765 iwl_mvm_set_key_rx_seq_idx(key, status, i);
1766 }
1767 }
1768
1769 struct iwl_mvm_d3_gtk_iter_data {
1770 struct iwl_mvm *mvm;
1771 struct iwl_wowlan_status_data *status;
1772 void *last_gtk;
1773 u32 cipher;
1774 bool find_phase, unhandled_cipher;
1775 int num_keys;
1776 };
1777
iwl_mvm_d3_update_keys(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key,void * _data)1778 static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw,
1779 struct ieee80211_vif *vif,
1780 struct ieee80211_sta *sta,
1781 struct ieee80211_key_conf *key,
1782 void *_data)
1783 {
1784 struct iwl_mvm_d3_gtk_iter_data *data = _data;
1785 struct iwl_wowlan_status_data *status = data->status;
1786
1787 if (data->unhandled_cipher)
1788 return;
1789
1790 switch (key->cipher) {
1791 case WLAN_CIPHER_SUITE_WEP40:
1792 case WLAN_CIPHER_SUITE_WEP104:
1793 /* ignore WEP completely, nothing to do */
1794 return;
1795 case WLAN_CIPHER_SUITE_CCMP:
1796 case WLAN_CIPHER_SUITE_GCMP:
1797 case WLAN_CIPHER_SUITE_GCMP_256:
1798 case WLAN_CIPHER_SUITE_TKIP:
1799 /* we support these */
1800 break;
1801 default:
1802 /* everything else (even CMAC for MFP) - disconnect from AP */
1803 data->unhandled_cipher = true;
1804 return;
1805 }
1806
1807 data->num_keys++;
1808
1809 /*
1810 * pairwise key - update sequence counters only;
1811 * note that this assumes no TDLS sessions are active
1812 */
1813 if (sta) {
1814 if (data->find_phase)
1815 return;
1816
1817 switch (key->cipher) {
1818 case WLAN_CIPHER_SUITE_CCMP:
1819 case WLAN_CIPHER_SUITE_GCMP:
1820 case WLAN_CIPHER_SUITE_GCMP_256:
1821 atomic64_set(&key->tx_pn, status->ptk.aes.tx_pn);
1822 iwl_mvm_set_aes_ptk_rx_seq(data->mvm, status, sta, key);
1823 break;
1824 case WLAN_CIPHER_SUITE_TKIP:
1825 atomic64_set(&key->tx_pn, status->ptk.tkip.tx_pn);
1826 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.tkip.seq);
1827 break;
1828 }
1829
1830 /* that's it for this key */
1831 return;
1832 }
1833
1834 if (data->find_phase) {
1835 data->last_gtk = key;
1836 data->cipher = key->cipher;
1837 return;
1838 }
1839
1840 if (data->status->num_of_gtk_rekeys)
1841 ieee80211_remove_key(key);
1842
1843 if (data->last_gtk == key)
1844 iwl_mvm_set_key_rx_seq(key, data->status, false);
1845 }
1846
iwl_mvm_setup_connection_keep(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_wowlan_status_data * status)1847 static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm,
1848 struct ieee80211_vif *vif,
1849 struct iwl_wowlan_status_data *status)
1850 {
1851 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1852 struct iwl_mvm_d3_gtk_iter_data gtkdata = {
1853 .mvm = mvm,
1854 .status = status,
1855 };
1856 u32 disconnection_reasons =
1857 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1858 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH;
1859
1860 if (!status || !vif->bss_conf.bssid)
1861 return false;
1862
1863 if (status->wakeup_reasons & disconnection_reasons)
1864 return false;
1865
1866 /* find last GTK that we used initially, if any */
1867 gtkdata.find_phase = true;
1868 ieee80211_iter_keys(mvm->hw, vif,
1869 iwl_mvm_d3_update_keys, >kdata);
1870 /* not trying to keep connections with MFP/unhandled ciphers */
1871 if (gtkdata.unhandled_cipher)
1872 return false;
1873 if (!gtkdata.num_keys)
1874 goto out;
1875 if (!gtkdata.last_gtk)
1876 return false;
1877
1878 /*
1879 * invalidate all other GTKs that might still exist and update
1880 * the one that we used
1881 */
1882 gtkdata.find_phase = false;
1883 ieee80211_iter_keys(mvm->hw, vif,
1884 iwl_mvm_d3_update_keys, >kdata);
1885
1886 IWL_DEBUG_WOWLAN(mvm, "num of GTK rekeying %d\n",
1887 status->num_of_gtk_rekeys);
1888 if (status->num_of_gtk_rekeys) {
1889 struct ieee80211_key_conf *key;
1890 struct {
1891 struct ieee80211_key_conf conf;
1892 u8 key[32];
1893 } conf = {
1894 .conf.cipher = gtkdata.cipher,
1895 .conf.keyidx =
1896 status->gtk.flags & IWL_WOWLAN_GTK_IDX_MASK,
1897 };
1898 __be64 replay_ctr;
1899
1900 IWL_DEBUG_WOWLAN(mvm,
1901 "Received from FW GTK cipher %d, key index %d\n",
1902 conf.conf.cipher, conf.conf.keyidx);
1903
1904 BUILD_BUG_ON(WLAN_KEY_LEN_CCMP != WLAN_KEY_LEN_GCMP);
1905 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_CCMP);
1906 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_GCMP_256);
1907 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_TKIP);
1908 BUILD_BUG_ON(sizeof(conf.key) < sizeof(status->gtk.key));
1909
1910 memcpy(conf.conf.key, status->gtk.key, sizeof(status->gtk.key));
1911
1912 switch (gtkdata.cipher) {
1913 case WLAN_CIPHER_SUITE_CCMP:
1914 case WLAN_CIPHER_SUITE_GCMP:
1915 conf.conf.keylen = WLAN_KEY_LEN_CCMP;
1916 break;
1917 case WLAN_CIPHER_SUITE_GCMP_256:
1918 conf.conf.keylen = WLAN_KEY_LEN_GCMP_256;
1919 break;
1920 case WLAN_CIPHER_SUITE_TKIP:
1921 conf.conf.keylen = WLAN_KEY_LEN_TKIP;
1922 break;
1923 }
1924
1925 key = ieee80211_gtk_rekey_add(vif, &conf.conf);
1926 if (IS_ERR(key))
1927 return false;
1928 iwl_mvm_set_key_rx_seq(key, status, true);
1929
1930 replay_ctr = cpu_to_be64(status->replay_ctr);
1931
1932 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid,
1933 (void *)&replay_ctr, GFP_KERNEL);
1934 }
1935
1936 out:
1937 if (iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP,
1938 WOWLAN_GET_STATUSES, 0) < 10) {
1939 mvmvif->seqno_valid = true;
1940 /* +0x10 because the set API expects next-to-use, not last-used */
1941 mvmvif->seqno = status->non_qos_seq_ctr + 0x10;
1942 }
1943
1944 return true;
1945 }
1946
iwl_mvm_convert_gtk_v2(struct iwl_wowlan_status_data * status,struct iwl_wowlan_gtk_status_v2 * data)1947 static void iwl_mvm_convert_gtk_v2(struct iwl_wowlan_status_data *status,
1948 struct iwl_wowlan_gtk_status_v2 *data)
1949 {
1950 BUILD_BUG_ON(sizeof(status->gtk.key) < sizeof(data->key));
1951 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY +
1952 sizeof(data->tkip_mic_key) >
1953 sizeof(status->gtk.key));
1954
1955 status->gtk.len = data->key_len;
1956 status->gtk.flags = data->key_flags;
1957
1958 memcpy(status->gtk.key, data->key, sizeof(data->key));
1959
1960 /* if it's as long as the TKIP encryption key, copy MIC key */
1961 if (status->gtk.len == NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY)
1962 memcpy(status->gtk.key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
1963 data->tkip_mic_key, sizeof(data->tkip_mic_key));
1964 }
1965
iwl_mvm_convert_gtk_v3(struct iwl_wowlan_status_data * status,struct iwl_wowlan_gtk_status_v3 * data)1966 static void iwl_mvm_convert_gtk_v3(struct iwl_wowlan_status_data *status,
1967 struct iwl_wowlan_gtk_status_v3 *data)
1968 {
1969 /* The parts we need are identical in v2 and v3 */
1970 #define CHECK(_f) do { \
1971 BUILD_BUG_ON(offsetof(struct iwl_wowlan_gtk_status_v2, _f) != \
1972 offsetof(struct iwl_wowlan_gtk_status_v3, _f)); \
1973 BUILD_BUG_ON(offsetofend(struct iwl_wowlan_gtk_status_v2, _f) !=\
1974 offsetofend(struct iwl_wowlan_gtk_status_v3, _f)); \
1975 } while (0)
1976
1977 CHECK(key);
1978 CHECK(key_len);
1979 CHECK(key_flags);
1980 CHECK(tkip_mic_key);
1981 #undef CHECK
1982
1983 iwl_mvm_convert_gtk_v2(status, (void *)data);
1984 }
1985
iwl_mvm_convert_igtk(struct iwl_wowlan_status_data * status,struct iwl_wowlan_igtk_status * data)1986 static void iwl_mvm_convert_igtk(struct iwl_wowlan_status_data *status,
1987 struct iwl_wowlan_igtk_status *data)
1988 {
1989 const u8 *ipn = data->ipn;
1990
1991 BUILD_BUG_ON(sizeof(status->igtk.key) < sizeof(data->key));
1992
1993 status->igtk.len = data->key_len;
1994 status->igtk.flags = data->key_flags;
1995
1996 memcpy(status->igtk.key, data->key, sizeof(data->key));
1997
1998 status->igtk.ipn = ((u64)ipn[5] << 0) |
1999 ((u64)ipn[4] << 8) |
2000 ((u64)ipn[3] << 16) |
2001 ((u64)ipn[2] << 24) |
2002 ((u64)ipn[1] << 32) |
2003 ((u64)ipn[0] << 40);
2004 }
2005
iwl_mvm_parse_wowlan_info_notif(struct iwl_mvm * mvm,struct iwl_wowlan_info_notif * data,struct iwl_wowlan_status_data * status,u32 len)2006 static void iwl_mvm_parse_wowlan_info_notif(struct iwl_mvm *mvm,
2007 struct iwl_wowlan_info_notif *data,
2008 struct iwl_wowlan_status_data *status,
2009 u32 len)
2010 {
2011 u32 i;
2012
2013 if (len < sizeof(*data)) {
2014 IWL_ERR(mvm, "Invalid WoWLAN info notification!\n");
2015 status = NULL;
2016 return;
2017 }
2018
2019 iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc);
2020 iwl_mvm_convert_gtk_v3(status, &data->gtk[0]);
2021 iwl_mvm_convert_igtk(status, &data->igtk[0]);
2022
2023 status->replay_ctr = le64_to_cpu(data->replay_ctr);
2024 status->pattern_number = le16_to_cpu(data->pattern_number);
2025 for (i = 0; i < IWL_MAX_TID_COUNT; i++)
2026 status->qos_seq_ctr[i] =
2027 le16_to_cpu(data->qos_seq_ctr[i]);
2028 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons);
2029 status->num_of_gtk_rekeys =
2030 le32_to_cpu(data->num_of_gtk_rekeys);
2031 status->received_beacons = le32_to_cpu(data->received_beacons);
2032 status->tid_tear_down = data->tid_tear_down;
2033 }
2034
2035 /* Occasionally, templates would be nice. This is one of those times ... */
2036 #define iwl_mvm_parse_wowlan_status_common(_ver) \
2037 static struct iwl_wowlan_status_data * \
2038 iwl_mvm_parse_wowlan_status_common_ ## _ver(struct iwl_mvm *mvm, \
2039 struct iwl_wowlan_status_ ##_ver *data,\
2040 int len) \
2041 { \
2042 struct iwl_wowlan_status_data *status; \
2043 int data_size, i; \
2044 \
2045 if (len < sizeof(*data)) { \
2046 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \
2047 return NULL; \
2048 } \
2049 \
2050 data_size = ALIGN(le32_to_cpu(data->wake_packet_bufsize), 4); \
2051 if (len != sizeof(*data) + data_size) { \
2052 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \
2053 return NULL; \
2054 } \
2055 \
2056 status = kzalloc(sizeof(*status), GFP_KERNEL); \
2057 if (!status) \
2058 return NULL; \
2059 \
2060 /* copy all the common fields */ \
2061 status->replay_ctr = le64_to_cpu(data->replay_ctr); \
2062 status->pattern_number = le16_to_cpu(data->pattern_number); \
2063 status->non_qos_seq_ctr = le16_to_cpu(data->non_qos_seq_ctr); \
2064 for (i = 0; i < 8; i++) \
2065 status->qos_seq_ctr[i] = \
2066 le16_to_cpu(data->qos_seq_ctr[i]); \
2067 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); \
2068 status->num_of_gtk_rekeys = \
2069 le32_to_cpu(data->num_of_gtk_rekeys); \
2070 status->received_beacons = le32_to_cpu(data->received_beacons); \
2071 status->wake_packet_length = \
2072 le32_to_cpu(data->wake_packet_length); \
2073 status->wake_packet_bufsize = \
2074 le32_to_cpu(data->wake_packet_bufsize); \
2075 if (status->wake_packet_bufsize) { \
2076 status->wake_packet = \
2077 kmemdup(data->wake_packet, \
2078 status->wake_packet_bufsize, \
2079 GFP_KERNEL); \
2080 if (!status->wake_packet) { \
2081 kfree(status); \
2082 return NULL; \
2083 } \
2084 } else { \
2085 status->wake_packet = NULL; \
2086 } \
2087 \
2088 return status; \
2089 }
2090
2091 iwl_mvm_parse_wowlan_status_common(v6)
iwl_mvm_parse_wowlan_status_common(v7)2092 iwl_mvm_parse_wowlan_status_common(v7)
2093 iwl_mvm_parse_wowlan_status_common(v9)
2094 iwl_mvm_parse_wowlan_status_common(v12)
2095
2096 static struct iwl_wowlan_status_data *
2097 iwl_mvm_send_wowlan_get_status(struct iwl_mvm *mvm, u8 sta_id)
2098 {
2099 struct iwl_wowlan_status_data *status;
2100 struct iwl_wowlan_get_status_cmd get_status_cmd = {
2101 .sta_id = cpu_to_le32(sta_id),
2102 };
2103 struct iwl_host_cmd cmd = {
2104 .id = WOWLAN_GET_STATUSES,
2105 .flags = CMD_WANT_SKB,
2106 .data = { &get_status_cmd, },
2107 .len = { sizeof(get_status_cmd), },
2108 };
2109 int ret, len;
2110 u8 notif_ver;
2111 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id,
2112 IWL_FW_CMD_VER_UNKNOWN);
2113
2114 if (cmd_ver == IWL_FW_CMD_VER_UNKNOWN)
2115 cmd.len[0] = 0;
2116
2117 lockdep_assert_held(&mvm->mutex);
2118
2119 ret = iwl_mvm_send_cmd(mvm, &cmd);
2120 if (ret) {
2121 IWL_ERR(mvm, "failed to query wakeup status (%d)\n", ret);
2122 return ERR_PTR(ret);
2123 }
2124
2125 len = iwl_rx_packet_payload_len(cmd.resp_pkt);
2126
2127 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */
2128 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP,
2129 WOWLAN_GET_STATUSES, 0);
2130 if (!notif_ver)
2131 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
2132 WOWLAN_GET_STATUSES, 7);
2133
2134 if (!fw_has_api(&mvm->fw->ucode_capa,
2135 IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL)) {
2136 struct iwl_wowlan_status_v6 *v6 = (void *)cmd.resp_pkt->data;
2137
2138 status = iwl_mvm_parse_wowlan_status_common_v6(mvm, v6, len);
2139 if (!status)
2140 goto out_free_resp;
2141
2142 BUILD_BUG_ON(sizeof(v6->gtk.decrypt_key) >
2143 sizeof(status->gtk.key));
2144 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY +
2145 sizeof(v6->gtk.tkip_mic_key) >
2146 sizeof(status->gtk.key));
2147
2148 /* copy GTK info to the right place */
2149 memcpy(status->gtk.key, v6->gtk.decrypt_key,
2150 sizeof(v6->gtk.decrypt_key));
2151 memcpy(status->gtk.key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
2152 v6->gtk.tkip_mic_key,
2153 sizeof(v6->gtk.tkip_mic_key));
2154
2155 iwl_mvm_convert_key_counters(status, &v6->gtk.rsc.all_tsc_rsc);
2156
2157 /* hardcode the key length to 16 since v6 only supports 16 */
2158 status->gtk.len = 16;
2159
2160 /*
2161 * The key index only uses 2 bits (values 0 to 3) and
2162 * we always set bit 7 which means this is the
2163 * currently used key.
2164 */
2165 status->gtk.flags = v6->gtk.key_index | BIT(7);
2166 } else if (notif_ver == 7) {
2167 struct iwl_wowlan_status_v7 *v7 = (void *)cmd.resp_pkt->data;
2168
2169 status = iwl_mvm_parse_wowlan_status_common_v7(mvm, v7, len);
2170 if (!status)
2171 goto out_free_resp;
2172
2173 iwl_mvm_convert_key_counters(status, &v7->gtk[0].rsc.all_tsc_rsc);
2174 iwl_mvm_convert_gtk_v2(status, &v7->gtk[0]);
2175 iwl_mvm_convert_igtk(status, &v7->igtk[0]);
2176 } else if (notif_ver == 9 || notif_ver == 10 || notif_ver == 11) {
2177 struct iwl_wowlan_status_v9 *v9 = (void *)cmd.resp_pkt->data;
2178
2179 /* these three command versions have same layout and size, the
2180 * difference is only in a few not used (reserved) fields.
2181 */
2182 status = iwl_mvm_parse_wowlan_status_common_v9(mvm, v9, len);
2183 if (!status)
2184 goto out_free_resp;
2185
2186 iwl_mvm_convert_key_counters(status, &v9->gtk[0].rsc.all_tsc_rsc);
2187 iwl_mvm_convert_gtk_v2(status, &v9->gtk[0]);
2188 iwl_mvm_convert_igtk(status, &v9->igtk[0]);
2189
2190 status->tid_tear_down = v9->tid_tear_down;
2191 } else if (notif_ver == 12) {
2192 struct iwl_wowlan_status_v12 *v12 = (void *)cmd.resp_pkt->data;
2193
2194 status = iwl_mvm_parse_wowlan_status_common_v12(mvm, v12, len);
2195 if (!status)
2196 goto out_free_resp;
2197
2198 iwl_mvm_convert_key_counters_v5(status, &v12->gtk[0].sc);
2199 iwl_mvm_convert_gtk_v3(status, &v12->gtk[0]);
2200 iwl_mvm_convert_igtk(status, &v12->igtk[0]);
2201
2202 status->tid_tear_down = v12->tid_tear_down;
2203 } else {
2204 IWL_ERR(mvm,
2205 "Firmware advertises unknown WoWLAN status response %d!\n",
2206 notif_ver);
2207 status = NULL;
2208 }
2209
2210 out_free_resp:
2211 iwl_free_resp(&cmd);
2212 return status;
2213 }
2214
2215 /* releases the MVM mutex */
iwl_mvm_query_wakeup_reasons(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_wowlan_status_data * status)2216 static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm,
2217 struct ieee80211_vif *vif,
2218 struct iwl_wowlan_status_data *status)
2219 {
2220 int i;
2221 bool keep;
2222 struct iwl_mvm_sta *mvm_ap_sta;
2223
2224 if (!status)
2225 goto out_unlock;
2226
2227 IWL_DEBUG_WOWLAN(mvm, "wakeup reason 0x%x\n",
2228 status->wakeup_reasons);
2229
2230 /* still at hard-coded place 0 for D3 image */
2231 mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, 0);
2232 if (!mvm_ap_sta)
2233 goto out_unlock;
2234
2235 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
2236 u16 seq = status->qos_seq_ctr[i];
2237 /* firmware stores last-used value, we store next value */
2238 seq += 0x10;
2239 mvm_ap_sta->tid_data[i].seq_number = seq;
2240 }
2241
2242 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000) {
2243 i = mvm->offload_tid;
2244 iwl_trans_set_q_ptrs(mvm->trans,
2245 mvm_ap_sta->tid_data[i].txq_id,
2246 mvm_ap_sta->tid_data[i].seq_number >> 4);
2247 }
2248
2249 /* now we have all the data we need, unlock to avoid mac80211 issues */
2250 mutex_unlock(&mvm->mutex);
2251
2252 iwl_mvm_report_wakeup_reasons(mvm, vif, status);
2253
2254 keep = iwl_mvm_setup_connection_keep(mvm, vif, status);
2255
2256 return keep;
2257
2258 out_unlock:
2259 mutex_unlock(&mvm->mutex);
2260 return false;
2261 }
2262
2263 #define ND_QUERY_BUF_LEN (sizeof(struct iwl_scan_offload_profile_match) * \
2264 IWL_SCAN_MAX_PROFILES)
2265
2266 struct iwl_mvm_nd_results {
2267 u32 matched_profiles;
2268 u8 matches[ND_QUERY_BUF_LEN];
2269 };
2270
2271 static int
iwl_mvm_netdetect_query_results(struct iwl_mvm * mvm,struct iwl_mvm_nd_results * results)2272 iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm,
2273 struct iwl_mvm_nd_results *results)
2274 {
2275 struct iwl_scan_offload_match_info *query;
2276 struct iwl_host_cmd cmd = {
2277 .id = SCAN_OFFLOAD_PROFILES_QUERY_CMD,
2278 .flags = CMD_WANT_SKB,
2279 };
2280 int ret, len;
2281 size_t query_len, matches_len;
2282 int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw);
2283
2284 ret = iwl_mvm_send_cmd(mvm, &cmd);
2285 if (ret) {
2286 IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret);
2287 return ret;
2288 }
2289
2290 if (fw_has_api(&mvm->fw->ucode_capa,
2291 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2292 query_len = sizeof(struct iwl_scan_offload_match_info);
2293 matches_len = sizeof(struct iwl_scan_offload_profile_match) *
2294 max_profiles;
2295 } else {
2296 query_len = sizeof(struct iwl_scan_offload_profiles_query_v1);
2297 matches_len = sizeof(struct iwl_scan_offload_profile_match_v1) *
2298 max_profiles;
2299 }
2300
2301 len = iwl_rx_packet_payload_len(cmd.resp_pkt);
2302 if (len < query_len) {
2303 IWL_ERR(mvm, "Invalid scan offload profiles query response!\n");
2304 ret = -EIO;
2305 goto out_free_resp;
2306 }
2307
2308 query = (void *)cmd.resp_pkt->data;
2309
2310 results->matched_profiles = le32_to_cpu(query->matched_profiles);
2311 memcpy(results->matches, query->matches, matches_len);
2312
2313 #ifdef CONFIG_IWLWIFI_DEBUGFS
2314 mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done);
2315 #endif
2316
2317 out_free_resp:
2318 iwl_free_resp(&cmd);
2319 return ret;
2320 }
2321
iwl_mvm_query_num_match_chans(struct iwl_mvm * mvm,struct iwl_mvm_nd_results * results,int idx)2322 static int iwl_mvm_query_num_match_chans(struct iwl_mvm *mvm,
2323 struct iwl_mvm_nd_results *results,
2324 int idx)
2325 {
2326 int n_chans = 0, i;
2327
2328 if (fw_has_api(&mvm->fw->ucode_capa,
2329 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2330 struct iwl_scan_offload_profile_match *matches =
2331 (void *)results->matches;
2332
2333 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; i++)
2334 n_chans += hweight8(matches[idx].matching_channels[i]);
2335 } else {
2336 struct iwl_scan_offload_profile_match_v1 *matches =
2337 (void *)results->matches;
2338
2339 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1; i++)
2340 n_chans += hweight8(matches[idx].matching_channels[i]);
2341 }
2342
2343 return n_chans;
2344 }
2345
iwl_mvm_query_set_freqs(struct iwl_mvm * mvm,struct iwl_mvm_nd_results * results,struct cfg80211_wowlan_nd_match * match,int idx)2346 static void iwl_mvm_query_set_freqs(struct iwl_mvm *mvm,
2347 struct iwl_mvm_nd_results *results,
2348 struct cfg80211_wowlan_nd_match *match,
2349 int idx)
2350 {
2351 int i;
2352
2353 if (fw_has_api(&mvm->fw->ucode_capa,
2354 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2355 struct iwl_scan_offload_profile_match *matches =
2356 (void *)results->matches;
2357
2358 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; i++)
2359 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
2360 match->channels[match->n_channels++] =
2361 mvm->nd_channels[i]->center_freq;
2362 } else {
2363 struct iwl_scan_offload_profile_match_v1 *matches =
2364 (void *)results->matches;
2365
2366 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1 * 8; i++)
2367 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
2368 match->channels[match->n_channels++] =
2369 mvm->nd_channels[i]->center_freq;
2370 }
2371 }
2372
2373 /**
2374 * enum iwl_d3_notif - d3 notifications
2375 * @IWL_D3_NOTIF_WOWLAN_INFO: WOWLAN_INFO_NOTIF was received
2376 * @IWL_D3_NOTIF_WOWLAN_WAKE_PKT: WOWLAN_WAKE_PKT_NOTIF was received
2377 * @IWL_D3_NOTIF_PROT_OFFLOAD: PROT_OFFLOAD_NOTIF was received
2378 * @IWL_D3_ND_MATCH_INFO: OFFLOAD_MATCH_INFO_NOTIF was received
2379 * @IWL_D3_NOTIF_D3_END_NOTIF: D3_END_NOTIF was received
2380 */
2381 enum iwl_d3_notif {
2382 IWL_D3_NOTIF_WOWLAN_INFO = BIT(0),
2383 IWL_D3_NOTIF_WOWLAN_WAKE_PKT = BIT(1),
2384 IWL_D3_NOTIF_PROT_OFFLOAD = BIT(2),
2385 IWL_D3_ND_MATCH_INFO = BIT(3),
2386 IWL_D3_NOTIF_D3_END_NOTIF = BIT(4)
2387 };
2388
2389 /* manage d3 resume data */
2390 struct iwl_d3_data {
2391 struct iwl_wowlan_status_data *status;
2392 bool test;
2393 u32 d3_end_flags;
2394 u32 notif_expected; /* bitmap - see &enum iwl_d3_notif */
2395 u32 notif_received; /* bitmap - see &enum iwl_d3_notif */
2396 struct iwl_mvm_nd_results *nd_results;
2397 bool nd_results_valid;
2398 };
2399
iwl_mvm_query_netdetect_reasons(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_d3_data * d3_data)2400 static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm,
2401 struct ieee80211_vif *vif,
2402 struct iwl_d3_data *d3_data)
2403 {
2404 struct cfg80211_wowlan_nd_info *net_detect = NULL;
2405 struct cfg80211_wowlan_wakeup wakeup = {
2406 .pattern_idx = -1,
2407 };
2408 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
2409 unsigned long matched_profiles;
2410 u32 reasons = 0;
2411 int i, n_matches, ret;
2412
2413 if (WARN_ON(!d3_data || !d3_data->status))
2414 goto out;
2415
2416 reasons = d3_data->status->wakeup_reasons;
2417
2418 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
2419 wakeup.rfkill_release = true;
2420
2421 if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS)
2422 goto out;
2423
2424 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
2425 WOWLAN_INFO_NOTIFICATION, 0)) {
2426 IWL_INFO(mvm, "Query FW for ND results\n");
2427 ret = iwl_mvm_netdetect_query_results(mvm, d3_data->nd_results);
2428
2429 } else {
2430 IWL_INFO(mvm, "Notification based ND results\n");
2431 ret = d3_data->nd_results_valid ? 0 : -1;
2432 }
2433
2434 if (ret || !d3_data->nd_results->matched_profiles) {
2435 wakeup_report = NULL;
2436 goto out;
2437 }
2438
2439 matched_profiles = d3_data->nd_results->matched_profiles;
2440 if (mvm->n_nd_match_sets) {
2441 n_matches = hweight_long(matched_profiles);
2442 } else {
2443 IWL_ERR(mvm, "no net detect match information available\n");
2444 n_matches = 0;
2445 }
2446
2447 net_detect = kzalloc(struct_size(net_detect, matches, n_matches),
2448 GFP_KERNEL);
2449 if (!net_detect || !n_matches)
2450 goto out_report_nd;
2451
2452 for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) {
2453 struct cfg80211_wowlan_nd_match *match;
2454 int idx, n_channels = 0;
2455
2456 n_channels = iwl_mvm_query_num_match_chans(mvm,
2457 d3_data->nd_results,
2458 i);
2459
2460 match = kzalloc(struct_size(match, channels, n_channels),
2461 GFP_KERNEL);
2462 if (!match)
2463 goto out_report_nd;
2464
2465 net_detect->matches[net_detect->n_matches++] = match;
2466
2467 /* We inverted the order of the SSIDs in the scan
2468 * request, so invert the index here.
2469 */
2470 idx = mvm->n_nd_match_sets - i - 1;
2471 match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len;
2472 memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid,
2473 match->ssid.ssid_len);
2474
2475 if (mvm->n_nd_channels < n_channels)
2476 continue;
2477
2478 iwl_mvm_query_set_freqs(mvm, d3_data->nd_results, match, i);
2479 }
2480
2481 out_report_nd:
2482 wakeup.net_detect = net_detect;
2483 out:
2484 iwl_mvm_free_nd(mvm);
2485
2486 mutex_unlock(&mvm->mutex);
2487 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
2488
2489 if (net_detect) {
2490 for (i = 0; i < net_detect->n_matches; i++)
2491 kfree(net_detect->matches[i]);
2492 kfree(net_detect);
2493 }
2494 }
2495
iwl_mvm_d3_disconnect_iter(void * data,u8 * mac,struct ieee80211_vif * vif)2496 static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac,
2497 struct ieee80211_vif *vif)
2498 {
2499 /* skip the one we keep connection on */
2500 if (data == vif)
2501 return;
2502
2503 if (vif->type == NL80211_IFTYPE_STATION)
2504 ieee80211_resume_disconnect(vif);
2505 }
2506
iwl_mvm_rt_status(struct iwl_trans * trans,u32 base,u32 * err_id)2507 static bool iwl_mvm_rt_status(struct iwl_trans *trans, u32 base, u32 *err_id)
2508 {
2509 struct error_table_start {
2510 /* cf. struct iwl_error_event_table */
2511 u32 valid;
2512 __le32 err_id;
2513 } err_info;
2514
2515 if (!base)
2516 return false;
2517
2518 iwl_trans_read_mem_bytes(trans, base,
2519 &err_info, sizeof(err_info));
2520 if (err_info.valid && err_id)
2521 *err_id = le32_to_cpu(err_info.err_id);
2522
2523 return !!err_info.valid;
2524 }
2525
iwl_mvm_check_rt_status(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2526 static bool iwl_mvm_check_rt_status(struct iwl_mvm *mvm,
2527 struct ieee80211_vif *vif)
2528 {
2529 u32 err_id;
2530
2531 /* check for lmac1 error */
2532 if (iwl_mvm_rt_status(mvm->trans,
2533 mvm->trans->dbg.lmac_error_event_table[0],
2534 &err_id)) {
2535 if (err_id == RF_KILL_INDICATOR_FOR_WOWLAN) {
2536 struct cfg80211_wowlan_wakeup wakeup = {
2537 .rfkill_release = true,
2538 };
2539 ieee80211_report_wowlan_wakeup(vif, &wakeup,
2540 GFP_KERNEL);
2541 }
2542 return true;
2543 }
2544
2545 /* check if we have lmac2 set and check for error */
2546 if (iwl_mvm_rt_status(mvm->trans,
2547 mvm->trans->dbg.lmac_error_event_table[1], NULL))
2548 return true;
2549
2550 /* check for umac error */
2551 if (iwl_mvm_rt_status(mvm->trans,
2552 mvm->trans->dbg.umac_error_event_table, NULL))
2553 return true;
2554
2555 return false;
2556 }
2557
2558 /*
2559 * This function assumes:
2560 * 1. The mutex is already held.
2561 * 2. The callee functions unlock the mutex.
2562 */
2563 static bool
iwl_mvm_choose_query_wakeup_reasons(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_d3_data * d3_data)2564 iwl_mvm_choose_query_wakeup_reasons(struct iwl_mvm *mvm,
2565 struct ieee80211_vif *vif,
2566 struct iwl_d3_data *d3_data)
2567 {
2568 lockdep_assert_held(&mvm->mutex);
2569
2570 /* if FW uses status notification, status shouldn't be NULL here */
2571 if (!d3_data->status) {
2572 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2573 u8 sta_id = mvm->net_detect ? IWL_MVM_INVALID_STA : mvmvif->ap_sta_id;
2574
2575 d3_data->status = iwl_mvm_send_wowlan_get_status(mvm, sta_id);
2576 }
2577
2578 if (mvm->net_detect) {
2579 iwl_mvm_query_netdetect_reasons(mvm, vif, d3_data);
2580 } else {
2581 bool keep = iwl_mvm_query_wakeup_reasons(mvm, vif,
2582 d3_data->status);
2583
2584 #ifdef CONFIG_IWLWIFI_DEBUGFS
2585 if (keep)
2586 mvm->keep_vif = vif;
2587 #endif
2588
2589 return keep;
2590 }
2591 return false;
2592 }
2593
2594 #define IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT (IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET | \
2595 IWL_WOWLAN_WAKEUP_BY_PATTERN | \
2596 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN |\
2597 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN_WILDCARD |\
2598 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN |\
2599 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN_WILDCARD)
2600
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)2601 static int iwl_mvm_wowlan_store_wake_pkt(struct iwl_mvm *mvm,
2602 struct iwl_wowlan_wake_pkt_notif *notif,
2603 struct iwl_wowlan_status_data *status,
2604 u32 len)
2605 {
2606 u32 data_size, packet_len = le32_to_cpu(notif->wake_packet_length);
2607
2608 if (len < sizeof(*notif)) {
2609 IWL_ERR(mvm, "Invalid WoWLAN wake packet notification!\n");
2610 return -EIO;
2611 }
2612
2613 if (WARN_ON(!status)) {
2614 IWL_ERR(mvm, "Got wake packet notification but wowlan status data is NULL\n");
2615 return -EIO;
2616 }
2617
2618 if (WARN_ON(!(status->wakeup_reasons &
2619 IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT))) {
2620 IWL_ERR(mvm, "Got wakeup packet but wakeup reason is %x\n",
2621 status->wakeup_reasons);
2622 return -EIO;
2623 }
2624
2625 data_size = len - offsetof(struct iwl_wowlan_wake_pkt_notif, wake_packet);
2626
2627 /* data_size got the padding from the notification, remove it. */
2628 if (packet_len < data_size)
2629 data_size = packet_len;
2630
2631 status->wake_packet = kmemdup(notif->wake_packet, data_size,
2632 GFP_ATOMIC);
2633
2634 if (!status->wake_packet)
2635 return -ENOMEM;
2636
2637 status->wake_packet_length = packet_len;
2638 status->wake_packet_bufsize = data_size;
2639
2640 return 0;
2641 }
2642
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)2643 static void iwl_mvm_nd_match_info_handler(struct iwl_mvm *mvm,
2644 struct iwl_d3_data *d3_data,
2645 struct iwl_scan_offload_match_info *notif,
2646 u32 len)
2647 {
2648 struct iwl_wowlan_status_data *status = d3_data->status;
2649 struct ieee80211_vif *vif = iwl_mvm_get_bss_vif(mvm);
2650 struct iwl_mvm_nd_results *results = d3_data->nd_results;
2651 size_t i, matches_len = sizeof(struct iwl_scan_offload_profile_match) *
2652 iwl_umac_scan_get_max_profiles(mvm->fw);
2653
2654 if (IS_ERR_OR_NULL(vif))
2655 return;
2656
2657 if (len < sizeof(struct iwl_scan_offload_match_info)) {
2658 IWL_ERR(mvm, "Invalid scan match info notification\n");
2659 return;
2660 }
2661
2662 if (!mvm->net_detect) {
2663 IWL_ERR(mvm, "Unexpected scan match info notification\n");
2664 return;
2665 }
2666
2667 if (!status || status->wakeup_reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
2668 IWL_ERR(mvm,
2669 "Ignore scan match info notification: no reason\n");
2670 return;
2671 }
2672
2673 #ifdef CONFIG_IWLWIFI_DEBUGFS
2674 mvm->last_netdetect_scans = le32_to_cpu(notif->n_scans_done);
2675 #endif
2676
2677 results->matched_profiles = le32_to_cpu(notif->matched_profiles);
2678 IWL_INFO(mvm, "number of matched profiles=%u\n",
2679 results->matched_profiles);
2680
2681 if (results->matched_profiles) {
2682 memcpy(results->matches, notif->matches, matches_len);
2683 d3_data->nd_results_valid = TRUE;
2684 }
2685
2686 /* no scan should be active at this point */
2687 mvm->scan_status = 0;
2688 for (i = 0; i < mvm->max_scans; i++)
2689 mvm->scan_uid_status[i] = 0;
2690 }
2691
iwl_mvm_wait_d3_notif(struct iwl_notif_wait_data * notif_wait,struct iwl_rx_packet * pkt,void * data)2692 static bool iwl_mvm_wait_d3_notif(struct iwl_notif_wait_data *notif_wait,
2693 struct iwl_rx_packet *pkt, void *data)
2694 {
2695 struct iwl_mvm *mvm =
2696 container_of(notif_wait, struct iwl_mvm, notif_wait);
2697 struct iwl_d3_data *d3_data = data;
2698 u32 len;
2699 int ret;
2700
2701 switch (WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) {
2702 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION): {
2703 struct iwl_wowlan_info_notif *notif = (void *)pkt->data;
2704
2705 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_INFO) {
2706 /* We might get two notifications due to dual bss */
2707 IWL_DEBUG_WOWLAN(mvm,
2708 "Got additional wowlan info notification\n");
2709 break;
2710 }
2711
2712 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_INFO;
2713 len = iwl_rx_packet_payload_len(pkt);
2714 iwl_mvm_parse_wowlan_info_notif(mvm, notif, d3_data->status,
2715 len);
2716 if (d3_data->status &&
2717 d3_data->status->wakeup_reasons & IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT)
2718 /* We are supposed to get also wake packet notif */
2719 d3_data->notif_expected |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT;
2720
2721 break;
2722 }
2723 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION): {
2724 struct iwl_wowlan_wake_pkt_notif *notif = (void *)pkt->data;
2725
2726 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_WAKE_PKT) {
2727 /* We shouldn't get two wake packet notifications */
2728 IWL_ERR(mvm,
2729 "Got additional wowlan wake packet notification\n");
2730 } else {
2731 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT;
2732 len = iwl_rx_packet_payload_len(pkt);
2733 ret = iwl_mvm_wowlan_store_wake_pkt(mvm, notif,
2734 d3_data->status,
2735 len);
2736 if (ret)
2737 IWL_ERR(mvm,
2738 "Can't parse WOWLAN_WAKE_PKT_NOTIFICATION\n");
2739 }
2740
2741 break;
2742 }
2743 case WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF): {
2744 struct iwl_scan_offload_match_info *notif = (void *)pkt->data;
2745
2746 if (d3_data->notif_received & IWL_D3_ND_MATCH_INFO) {
2747 IWL_ERR(mvm,
2748 "Got additional netdetect match info\n");
2749 break;
2750 }
2751
2752 d3_data->notif_received |= IWL_D3_ND_MATCH_INFO;
2753
2754 /* explicitly set this in the 'expected' as well */
2755 d3_data->notif_expected |= IWL_D3_ND_MATCH_INFO;
2756
2757 len = iwl_rx_packet_payload_len(pkt);
2758 iwl_mvm_nd_match_info_handler(mvm, d3_data, notif, len);
2759 break;
2760 }
2761 case WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION): {
2762 struct iwl_mvm_d3_end_notif *notif = (void *)pkt->data;
2763
2764 d3_data->d3_end_flags = __le32_to_cpu(notif->flags);
2765 d3_data->notif_received |= IWL_D3_NOTIF_D3_END_NOTIF;
2766
2767 break;
2768 }
2769 default:
2770 WARN_ON(1);
2771 }
2772
2773 return d3_data->notif_received == d3_data->notif_expected;
2774 }
2775
iwl_mvm_resume_firmware(struct iwl_mvm * mvm,bool test)2776 static int iwl_mvm_resume_firmware(struct iwl_mvm *mvm, bool test)
2777 {
2778 int ret;
2779 enum iwl_d3_status d3_status;
2780 struct iwl_host_cmd cmd = {
2781 .id = D0I3_END_CMD,
2782 .flags = CMD_WANT_SKB | CMD_SEND_IN_D3,
2783 };
2784 bool reset = fw_has_capa(&mvm->fw->ucode_capa,
2785 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2786
2787 ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, !reset);
2788 if (ret)
2789 return ret;
2790
2791 if (d3_status != IWL_D3_STATUS_ALIVE) {
2792 IWL_INFO(mvm, "Device was reset during suspend\n");
2793 return -ENOENT;
2794 }
2795
2796 /*
2797 * We should trigger resume flow using command only for 22000 family
2798 * AX210 and above don't need the command since they have
2799 * the doorbell interrupt.
2800 */
2801 if (mvm->trans->trans_cfg->device_family <= IWL_DEVICE_FAMILY_22000 &&
2802 fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_D0I3_END_FIRST)) {
2803 ret = iwl_mvm_send_cmd(mvm, &cmd);
2804 if (ret < 0)
2805 IWL_ERR(mvm, "Failed to send D0I3_END_CMD first (%d)\n",
2806 ret);
2807 }
2808
2809 return ret;
2810 }
2811
2812 #define IWL_MVM_D3_NOTIF_TIMEOUT (HZ / 5)
2813
iwl_mvm_d3_notif_wait(struct iwl_mvm * mvm,struct iwl_d3_data * d3_data)2814 static int iwl_mvm_d3_notif_wait(struct iwl_mvm *mvm,
2815 struct iwl_d3_data *d3_data)
2816 {
2817 static const u16 d3_resume_notif[] = {
2818 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION),
2819 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION),
2820 WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF),
2821 WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION)
2822 };
2823 struct iwl_notification_wait wait_d3_notif;
2824 int ret;
2825
2826 iwl_init_notification_wait(&mvm->notif_wait, &wait_d3_notif,
2827 d3_resume_notif, ARRAY_SIZE(d3_resume_notif),
2828 iwl_mvm_wait_d3_notif, d3_data);
2829
2830 ret = iwl_mvm_resume_firmware(mvm, d3_data->test);
2831 if (ret) {
2832 iwl_remove_notification(&mvm->notif_wait, &wait_d3_notif);
2833 return ret;
2834 }
2835
2836 return iwl_wait_notification(&mvm->notif_wait, &wait_d3_notif,
2837 IWL_MVM_D3_NOTIF_TIMEOUT);
2838 }
2839
iwl_mvm_d3_resume_notif_based(struct iwl_mvm * mvm)2840 static inline bool iwl_mvm_d3_resume_notif_based(struct iwl_mvm *mvm)
2841 {
2842 return iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
2843 WOWLAN_INFO_NOTIFICATION, 0) &&
2844 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
2845 WOWLAN_WAKE_PKT_NOTIFICATION, 0) &&
2846 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
2847 D3_END_NOTIFICATION, 0);
2848 }
2849
__iwl_mvm_resume(struct iwl_mvm * mvm,bool test)2850 static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test)
2851 {
2852 struct ieee80211_vif *vif = NULL;
2853 int ret = 1;
2854 struct iwl_mvm_nd_results results = {};
2855 struct iwl_d3_data d3_data = {
2856 .test = test,
2857 .notif_expected =
2858 IWL_D3_NOTIF_WOWLAN_INFO |
2859 IWL_D3_NOTIF_D3_END_NOTIF,
2860 .nd_results_valid = false,
2861 .nd_results = &results,
2862 };
2863 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
2864 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2865 bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa,
2866 IWL_UCODE_TLV_CAPA_D0I3_END_FIRST);
2867 bool resume_notif_based = iwl_mvm_d3_resume_notif_based(mvm);
2868 bool keep = false;
2869
2870 mutex_lock(&mvm->mutex);
2871
2872 mvm->last_reset_or_resume_time_jiffies = jiffies;
2873
2874 /* get the BSS vif pointer again */
2875 vif = iwl_mvm_get_bss_vif(mvm);
2876 if (IS_ERR_OR_NULL(vif))
2877 goto err;
2878
2879 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
2880
2881 if (iwl_mvm_check_rt_status(mvm, vif)) {
2882 set_bit(STATUS_FW_ERROR, &mvm->trans->status);
2883 iwl_mvm_dump_nic_error_log(mvm);
2884 iwl_dbg_tlv_time_point(&mvm->fwrt,
2885 IWL_FW_INI_TIME_POINT_FW_ASSERT, NULL);
2886 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert,
2887 false, 0);
2888 ret = 1;
2889 goto err;
2890 }
2891
2892 if (resume_notif_based) {
2893 d3_data.status = kzalloc(sizeof(*d3_data.status), GFP_KERNEL);
2894 if (!d3_data.status) {
2895 IWL_ERR(mvm, "Failed to allocate wowlan status\n");
2896 ret = -ENOMEM;
2897 goto err;
2898 }
2899
2900 ret = iwl_mvm_d3_notif_wait(mvm, &d3_data);
2901 if (ret)
2902 goto err;
2903 } else {
2904 ret = iwl_mvm_resume_firmware(mvm, test);
2905 if (ret < 0)
2906 goto err;
2907 }
2908
2909 /* after the successful handshake, we're out of D3 */
2910 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
2911
2912 /* when reset is required we can't send these following commands */
2913 if (d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)
2914 goto query_wakeup_reasons;
2915
2916 /*
2917 * Query the current location and source from the D3 firmware so we
2918 * can play it back when we re-intiailize the D0 firmware
2919 */
2920 iwl_mvm_update_changed_regdom(mvm);
2921
2922 /* Re-configure PPAG settings */
2923 iwl_mvm_ppag_send_cmd(mvm);
2924
2925 if (!unified_image)
2926 /* Re-configure default SAR profile */
2927 iwl_mvm_sar_select_profile(mvm, 1, 1);
2928
2929 if (mvm->net_detect && unified_image) {
2930 /* If this is a non-unified image, we restart the FW,
2931 * so no need to stop the netdetect scan. If that
2932 * fails, continue and try to get the wake-up reasons,
2933 * but trigger a HW restart by keeping a failure code
2934 * in ret.
2935 */
2936 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT,
2937 false);
2938 }
2939
2940 query_wakeup_reasons:
2941 keep = iwl_mvm_choose_query_wakeup_reasons(mvm, vif, &d3_data);
2942 /* has unlocked the mutex, so skip that */
2943 goto out;
2944
2945 err:
2946 mutex_unlock(&mvm->mutex);
2947 out:
2948 if (d3_data.status)
2949 kfree(d3_data.status->wake_packet);
2950 kfree(d3_data.status);
2951 iwl_mvm_free_nd(mvm);
2952
2953 if (!d3_data.test && !mvm->net_detect)
2954 ieee80211_iterate_active_interfaces_mtx(mvm->hw,
2955 IEEE80211_IFACE_ITER_NORMAL,
2956 iwl_mvm_d3_disconnect_iter,
2957 keep ? vif : NULL);
2958
2959 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
2960
2961 /* no need to reset the device in unified images, if successful */
2962 if (unified_image && !ret) {
2963 /* nothing else to do if we already sent D0I3_END_CMD */
2964 if (d0i3_first)
2965 return 0;
2966
2967 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
2968 D3_END_NOTIFICATION, 0)) {
2969 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL);
2970 if (!ret)
2971 return 0;
2972 } else if (!(d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)) {
2973 return 0;
2974 }
2975 }
2976
2977 /*
2978 * Reconfigure the device in one of the following cases:
2979 * 1. We are not using a unified image
2980 * 2. We are using a unified image but had an error while exiting D3
2981 */
2982 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
2983
2984 /* regardless of what happened, we're now out of D3 */
2985 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
2986
2987 return 1;
2988 }
2989
iwl_mvm_resume(struct ieee80211_hw * hw)2990 int iwl_mvm_resume(struct ieee80211_hw *hw)
2991 {
2992 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2993 int ret;
2994
2995 ret = __iwl_mvm_resume(mvm, false);
2996
2997 iwl_mvm_resume_tcm(mvm);
2998
2999 iwl_fw_runtime_resume(&mvm->fwrt);
3000
3001 return ret;
3002 }
3003
iwl_mvm_set_wakeup(struct ieee80211_hw * hw,bool enabled)3004 void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled)
3005 {
3006 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3007
3008 device_set_wakeup_enable(mvm->trans->dev, enabled);
3009 }
3010
3011 #ifdef CONFIG_IWLWIFI_DEBUGFS
iwl_mvm_d3_test_open(struct inode * inode,struct file * file)3012 static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file)
3013 {
3014 struct iwl_mvm *mvm = inode->i_private;
3015 int err;
3016
3017 if (mvm->d3_test_active)
3018 return -EBUSY;
3019
3020 file->private_data = inode->i_private;
3021
3022 iwl_mvm_pause_tcm(mvm, true);
3023
3024 iwl_fw_runtime_suspend(&mvm->fwrt);
3025
3026 /* start pseudo D3 */
3027 rtnl_lock();
3028 wiphy_lock(mvm->hw->wiphy);
3029 err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true);
3030 wiphy_unlock(mvm->hw->wiphy);
3031 rtnl_unlock();
3032 if (err > 0)
3033 err = -EINVAL;
3034 if (err)
3035 return err;
3036
3037 mvm->d3_test_active = true;
3038 mvm->keep_vif = NULL;
3039 return 0;
3040 }
3041
iwl_mvm_d3_test_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)3042 static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf,
3043 size_t count, loff_t *ppos)
3044 {
3045 struct iwl_mvm *mvm = file->private_data;
3046 u32 pme_asserted;
3047
3048 while (true) {
3049 /* read pme_ptr if available */
3050 if (mvm->d3_test_pme_ptr) {
3051 pme_asserted = iwl_trans_read_mem32(mvm->trans,
3052 mvm->d3_test_pme_ptr);
3053 if (pme_asserted)
3054 break;
3055 }
3056
3057 if (msleep_interruptible(100))
3058 break;
3059 }
3060
3061 return 0;
3062 }
3063
iwl_mvm_d3_test_disconn_work_iter(void * _data,u8 * mac,struct ieee80211_vif * vif)3064 static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac,
3065 struct ieee80211_vif *vif)
3066 {
3067 /* skip the one we keep connection on */
3068 if (_data == vif)
3069 return;
3070
3071 if (vif->type == NL80211_IFTYPE_STATION)
3072 ieee80211_connection_loss(vif);
3073 }
3074
iwl_mvm_d3_test_release(struct inode * inode,struct file * file)3075 static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file)
3076 {
3077 struct iwl_mvm *mvm = inode->i_private;
3078 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
3079 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
3080
3081 mvm->d3_test_active = false;
3082
3083 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
3084
3085 rtnl_lock();
3086 wiphy_lock(mvm->hw->wiphy);
3087 __iwl_mvm_resume(mvm, true);
3088 wiphy_unlock(mvm->hw->wiphy);
3089 rtnl_unlock();
3090
3091 iwl_mvm_resume_tcm(mvm);
3092
3093 iwl_fw_runtime_resume(&mvm->fwrt);
3094
3095 iwl_abort_notification_waits(&mvm->notif_wait);
3096 if (!unified_image) {
3097 int remaining_time = 10;
3098
3099 ieee80211_restart_hw(mvm->hw);
3100
3101 /* wait for restart and disconnect all interfaces */
3102 while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
3103 remaining_time > 0) {
3104 remaining_time--;
3105 msleep(1000);
3106 }
3107
3108 if (remaining_time == 0)
3109 IWL_ERR(mvm, "Timed out waiting for HW restart!\n");
3110 }
3111
3112 ieee80211_iterate_active_interfaces_atomic(
3113 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
3114 iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif);
3115
3116 return 0;
3117 }
3118
3119 const struct file_operations iwl_dbgfs_d3_test_ops = {
3120 .llseek = no_llseek,
3121 .open = iwl_mvm_d3_test_open,
3122 .read = iwl_mvm_d3_test_read,
3123 .release = iwl_mvm_d3_test_release,
3124 };
3125 #endif
3126