1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /*
3 * Copyright (C) 2012-2014, 2018-2021 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((__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, LONG_GROUP,
457 WOWLAN_TSC_RSC_PARAM,
458 IWL_FW_CMD_VER_UNKNOWN);
459 int ret;
460
461 if (ver == 5) {
462 struct wowlan_key_rsc_v5_data data = {};
463 int i;
464
465 data.rsc = kmalloc(sizeof(*data.rsc), GFP_KERNEL);
466 if (!data.rsc)
467 return -ENOMEM;
468
469 memset(data.rsc, 0xff, sizeof(*data.rsc));
470
471 for (i = 0; i < ARRAY_SIZE(data.rsc->mcast_key_id_map); i++)
472 data.rsc->mcast_key_id_map[i] =
473 IWL_MCAST_KEY_MAP_INVALID;
474 data.rsc->sta_id = cpu_to_le32(mvmvif->ap_sta_id);
475
476 ieee80211_iter_keys(mvm->hw, vif,
477 iwl_mvm_wowlan_get_rsc_v5_data,
478 &data);
479
480 if (data.have_rsc)
481 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM,
482 CMD_ASYNC, sizeof(*data.rsc),
483 data.rsc);
484 else
485 ret = 0;
486 kfree(data.rsc);
487 } else if (ver == 4 || ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN) {
488 struct wowlan_key_rsc_tsc_data data = {};
489 int size;
490
491 data.rsc_tsc = kzalloc(sizeof(*data.rsc_tsc), GFP_KERNEL);
492 if (!data.rsc_tsc)
493 return -ENOMEM;
494
495 if (ver == 4) {
496 size = sizeof(*data.rsc_tsc);
497 data.rsc_tsc->sta_id = cpu_to_le32(mvmvif->ap_sta_id);
498 } else {
499 /* ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN */
500 size = sizeof(data.rsc_tsc->params);
501 }
502
503 ieee80211_iter_keys(mvm->hw, vif,
504 iwl_mvm_wowlan_get_rsc_tsc_data,
505 &data);
506
507 if (data.have_rsc_tsc)
508 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM,
509 CMD_ASYNC, size,
510 data.rsc_tsc);
511 else
512 ret = 0;
513 kfree(data.rsc_tsc);
514 } else {
515 ret = 0;
516 WARN_ON_ONCE(1);
517 }
518
519 return ret;
520 }
521
522 struct wowlan_key_tkip_data {
523 struct iwl_wowlan_tkip_params_cmd tkip;
524 bool have_tkip_keys;
525 };
526
iwl_mvm_wowlan_get_tkip_data(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key,void * _data)527 static void iwl_mvm_wowlan_get_tkip_data(struct ieee80211_hw *hw,
528 struct ieee80211_vif *vif,
529 struct ieee80211_sta *sta,
530 struct ieee80211_key_conf *key,
531 void *_data)
532 {
533 struct wowlan_key_tkip_data *data = _data;
534 struct iwl_p1k_cache *rx_p1ks;
535 u8 *rx_mic_key;
536 struct ieee80211_key_seq seq;
537 u32 cur_rx_iv32 = 0;
538 u16 p1k[IWL_P1K_SIZE];
539 int i;
540
541 switch (key->cipher) {
542 default:
543 break;
544 case WLAN_CIPHER_SUITE_TKIP:
545 if (sta) {
546 u64 pn64;
547
548 rx_p1ks = data->tkip.rx_uni;
549
550 pn64 = atomic64_read(&key->tx_pn);
551
552 ieee80211_get_tkip_p1k_iv(key, TKIP_PN_TO_IV32(pn64),
553 p1k);
554 iwl_mvm_convert_p1k(p1k, data->tkip.tx.p1k);
555
556 memcpy(data->tkip.mic_keys.tx,
557 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
558 IWL_MIC_KEY_SIZE);
559
560 rx_mic_key = data->tkip.mic_keys.rx_unicast;
561 } else {
562 rx_p1ks = data->tkip.rx_multi;
563 rx_mic_key = data->tkip.mic_keys.rx_mcast;
564 }
565
566 for (i = 0; i < IWL_NUM_RSC; i++) {
567 ieee80211_get_key_rx_seq(key, i, &seq);
568 /* wrapping isn't allowed, AP must rekey */
569 if (seq.tkip.iv32 > cur_rx_iv32)
570 cur_rx_iv32 = seq.tkip.iv32;
571 }
572
573 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
574 cur_rx_iv32, p1k);
575 iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k);
576 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
577 cur_rx_iv32 + 1, p1k);
578 iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k);
579
580 memcpy(rx_mic_key,
581 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
582 IWL_MIC_KEY_SIZE);
583
584 data->have_tkip_keys = true;
585 break;
586 }
587 }
588
589 struct wowlan_key_gtk_type_iter {
590 struct iwl_wowlan_kek_kck_material_cmd_v4 *kek_kck_cmd;
591 };
592
iwl_mvm_wowlan_gtk_type_iter(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key,void * _data)593 static void iwl_mvm_wowlan_gtk_type_iter(struct ieee80211_hw *hw,
594 struct ieee80211_vif *vif,
595 struct ieee80211_sta *sta,
596 struct ieee80211_key_conf *key,
597 void *_data)
598 {
599 struct wowlan_key_gtk_type_iter *data = _data;
600
601 switch (key->cipher) {
602 default:
603 return;
604 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
605 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
606 data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_GCMP);
607 return;
608 case WLAN_CIPHER_SUITE_AES_CMAC:
609 data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_CCM);
610 return;
611 case WLAN_CIPHER_SUITE_CCMP:
612 if (!sta)
613 data->kek_kck_cmd->gtk_cipher =
614 cpu_to_le32(STA_KEY_FLG_CCM);
615 break;
616 case WLAN_CIPHER_SUITE_GCMP:
617 case WLAN_CIPHER_SUITE_GCMP_256:
618 if (!sta)
619 data->kek_kck_cmd->gtk_cipher =
620 cpu_to_le32(STA_KEY_FLG_GCMP);
621 break;
622 }
623 }
624
iwl_mvm_send_patterns_v1(struct iwl_mvm * mvm,struct cfg80211_wowlan * wowlan)625 static int iwl_mvm_send_patterns_v1(struct iwl_mvm *mvm,
626 struct cfg80211_wowlan *wowlan)
627 {
628 struct iwl_wowlan_patterns_cmd_v1 *pattern_cmd;
629 struct iwl_host_cmd cmd = {
630 .id = WOWLAN_PATTERNS,
631 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
632 };
633 int i, err;
634
635 if (!wowlan->n_patterns)
636 return 0;
637
638 cmd.len[0] = struct_size(pattern_cmd, patterns, wowlan->n_patterns);
639
640 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
641 if (!pattern_cmd)
642 return -ENOMEM;
643
644 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
645
646 for (i = 0; i < wowlan->n_patterns; i++) {
647 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
648
649 memcpy(&pattern_cmd->patterns[i].mask,
650 wowlan->patterns[i].mask, mask_len);
651 memcpy(&pattern_cmd->patterns[i].pattern,
652 wowlan->patterns[i].pattern,
653 wowlan->patterns[i].pattern_len);
654 pattern_cmd->patterns[i].mask_size = mask_len;
655 pattern_cmd->patterns[i].pattern_size =
656 wowlan->patterns[i].pattern_len;
657 }
658
659 cmd.data[0] = pattern_cmd;
660 err = iwl_mvm_send_cmd(mvm, &cmd);
661 kfree(pattern_cmd);
662 return err;
663 }
664
iwl_mvm_send_patterns(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct cfg80211_wowlan * wowlan)665 static int iwl_mvm_send_patterns(struct iwl_mvm *mvm,
666 struct ieee80211_vif *vif,
667 struct cfg80211_wowlan *wowlan)
668 {
669 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
670 struct iwl_wowlan_patterns_cmd *pattern_cmd;
671 struct iwl_host_cmd cmd = {
672 .id = WOWLAN_PATTERNS,
673 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
674 };
675 int i, err;
676 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP,
677 WOWLAN_PATTERNS,
678 IWL_FW_CMD_VER_UNKNOWN);
679
680 if (!wowlan->n_patterns)
681 return 0;
682
683 cmd.len[0] = sizeof(*pattern_cmd) +
684 wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern_v2);
685
686 pattern_cmd = kzalloc(cmd.len[0], GFP_KERNEL);
687 if (!pattern_cmd)
688 return -ENOMEM;
689
690 pattern_cmd->n_patterns = wowlan->n_patterns;
691 if (ver >= 3)
692 pattern_cmd->sta_id = mvmvif->ap_sta_id;
693
694 for (i = 0; i < wowlan->n_patterns; i++) {
695 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
696
697 pattern_cmd->patterns[i].pattern_type =
698 WOWLAN_PATTERN_TYPE_BITMASK;
699
700 memcpy(&pattern_cmd->patterns[i].u.bitmask.mask,
701 wowlan->patterns[i].mask, mask_len);
702 memcpy(&pattern_cmd->patterns[i].u.bitmask.pattern,
703 wowlan->patterns[i].pattern,
704 wowlan->patterns[i].pattern_len);
705 pattern_cmd->patterns[i].u.bitmask.mask_size = mask_len;
706 pattern_cmd->patterns[i].u.bitmask.pattern_size =
707 wowlan->patterns[i].pattern_len;
708 }
709
710 cmd.data[0] = pattern_cmd;
711 err = iwl_mvm_send_cmd(mvm, &cmd);
712 kfree(pattern_cmd);
713 return err;
714 }
715
iwl_mvm_d3_reprogram(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * ap_sta)716 static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
717 struct ieee80211_sta *ap_sta)
718 {
719 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
720 struct ieee80211_chanctx_conf *ctx;
721 u8 chains_static, chains_dynamic;
722 struct cfg80211_chan_def chandef;
723 int ret, i;
724 struct iwl_binding_cmd_v1 binding_cmd = {};
725 struct iwl_time_quota_cmd quota_cmd = {};
726 struct iwl_time_quota_data *quota;
727 u32 status;
728
729 if (WARN_ON_ONCE(iwl_mvm_is_cdb_supported(mvm)))
730 return -EINVAL;
731
732 /* add back the PHY */
733 if (WARN_ON(!mvmvif->phy_ctxt))
734 return -EINVAL;
735
736 rcu_read_lock();
737 ctx = rcu_dereference(vif->chanctx_conf);
738 if (WARN_ON(!ctx)) {
739 rcu_read_unlock();
740 return -EINVAL;
741 }
742 chandef = ctx->def;
743 chains_static = ctx->rx_chains_static;
744 chains_dynamic = ctx->rx_chains_dynamic;
745 rcu_read_unlock();
746
747 ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt, &chandef,
748 chains_static, chains_dynamic);
749 if (ret)
750 return ret;
751
752 /* add back the MAC */
753 mvmvif->uploaded = false;
754
755 if (WARN_ON(!vif->bss_conf.assoc))
756 return -EINVAL;
757
758 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
759 if (ret)
760 return ret;
761
762 /* add back binding - XXX refactor? */
763 binding_cmd.id_and_color =
764 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
765 mvmvif->phy_ctxt->color));
766 binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD);
767 binding_cmd.phy =
768 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
769 mvmvif->phy_ctxt->color));
770 binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
771 mvmvif->color));
772 for (i = 1; i < MAX_MACS_IN_BINDING; i++)
773 binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID);
774
775 status = 0;
776 ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD,
777 IWL_BINDING_CMD_SIZE_V1, &binding_cmd,
778 &status);
779 if (ret) {
780 IWL_ERR(mvm, "Failed to add binding: %d\n", ret);
781 return ret;
782 }
783
784 if (status) {
785 IWL_ERR(mvm, "Binding command failed: %u\n", status);
786 return -EIO;
787 }
788
789 ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false, 0);
790 if (ret)
791 return ret;
792 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], ap_sta);
793
794 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
795 if (ret)
796 return ret;
797
798 /* and some quota */
799 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, 0);
800 quota->id_and_color =
801 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
802 mvmvif->phy_ctxt->color));
803 quota->quota = cpu_to_le32(IWL_MVM_MAX_QUOTA);
804 quota->max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA);
805
806 for (i = 1; i < MAX_BINDINGS; i++) {
807 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, i);
808 quota->id_and_color = cpu_to_le32(FW_CTXT_INVALID);
809 }
810
811 ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0,
812 iwl_mvm_quota_cmd_size(mvm), "a_cmd);
813 if (ret)
814 IWL_ERR(mvm, "Failed to send quota: %d\n", ret);
815
816 if (iwl_mvm_is_lar_supported(mvm) && iwl_mvm_init_fw_regd(mvm))
817 IWL_ERR(mvm, "Failed to initialize D3 LAR information\n");
818
819 return 0;
820 }
821
iwl_mvm_get_last_nonqos_seq(struct iwl_mvm * mvm,struct ieee80211_vif * vif)822 static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm,
823 struct ieee80211_vif *vif)
824 {
825 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
826 struct iwl_nonqos_seq_query_cmd query_cmd = {
827 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET),
828 .mac_id_n_color =
829 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
830 mvmvif->color)),
831 };
832 struct iwl_host_cmd cmd = {
833 .id = NON_QOS_TX_COUNTER_CMD,
834 .flags = CMD_WANT_SKB,
835 };
836 int err;
837 u32 size;
838
839 cmd.data[0] = &query_cmd;
840 cmd.len[0] = sizeof(query_cmd);
841
842 err = iwl_mvm_send_cmd(mvm, &cmd);
843 if (err)
844 return err;
845
846 size = iwl_rx_packet_payload_len(cmd.resp_pkt);
847 if (size < sizeof(__le16)) {
848 err = -EINVAL;
849 } else {
850 err = le16_to_cpup((__le16 *)cmd.resp_pkt->data);
851 /* firmware returns next, not last-used seqno */
852 err = (u16) (err - 0x10);
853 }
854
855 iwl_free_resp(&cmd);
856 return err;
857 }
858
iwl_mvm_set_last_nonqos_seq(struct iwl_mvm * mvm,struct ieee80211_vif * vif)859 void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
860 {
861 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
862 struct iwl_nonqos_seq_query_cmd query_cmd = {
863 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET),
864 .mac_id_n_color =
865 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
866 mvmvif->color)),
867 .value = cpu_to_le16(mvmvif->seqno),
868 };
869
870 /* return if called during restart, not resume from D3 */
871 if (!mvmvif->seqno_valid)
872 return;
873
874 mvmvif->seqno_valid = false;
875
876 if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0,
877 sizeof(query_cmd), &query_cmd))
878 IWL_ERR(mvm, "failed to set non-QoS seqno\n");
879 }
880
iwl_mvm_switch_to_d3(struct iwl_mvm * mvm)881 static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm)
882 {
883 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
884
885 iwl_mvm_stop_device(mvm);
886 /*
887 * Set the HW restart bit -- this is mostly true as we're
888 * going to load new firmware and reprogram that, though
889 * the reprogramming is going to be manual to avoid adding
890 * all the MACs that aren't support.
891 * We don't have to clear up everything though because the
892 * reprogramming is manual. When we resume, we'll actually
893 * go through a proper restart sequence again to switch
894 * back to the runtime firmware image.
895 */
896 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
897
898 /* the fw is reset, so all the keys are cleared */
899 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
900
901 mvm->ptk_ivlen = 0;
902 mvm->ptk_icvlen = 0;
903 mvm->ptk_ivlen = 0;
904 mvm->ptk_icvlen = 0;
905
906 return iwl_mvm_load_d3_fw(mvm);
907 }
908
909 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)910 iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm,
911 struct cfg80211_wowlan *wowlan,
912 struct iwl_wowlan_config_cmd *wowlan_config_cmd,
913 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
914 struct ieee80211_sta *ap_sta)
915 {
916 struct iwl_mvm_sta *mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
917
918 /* TODO: wowlan_config_cmd->wowlan_ba_teardown_tids */
919
920 wowlan_config_cmd->is_11n_connection =
921 ap_sta->deflink.ht_cap.ht_supported;
922 wowlan_config_cmd->flags = ENABLE_L3_FILTERING |
923 ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING;
924
925 if (iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP,
926 WOWLAN_CONFIGURATION, 0) < 6) {
927 /* Query the last used seqno and set it */
928 int ret = iwl_mvm_get_last_nonqos_seq(mvm, vif);
929
930 if (ret < 0)
931 return ret;
932
933 wowlan_config_cmd->non_qos_seq = cpu_to_le16(ret);
934 }
935
936 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, wowlan_config_cmd);
937
938 if (wowlan->disconnect)
939 wowlan_config_cmd->wakeup_filter |=
940 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
941 IWL_WOWLAN_WAKEUP_LINK_CHANGE);
942 if (wowlan->magic_pkt)
943 wowlan_config_cmd->wakeup_filter |=
944 cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET);
945 if (wowlan->gtk_rekey_failure)
946 wowlan_config_cmd->wakeup_filter |=
947 cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
948 if (wowlan->eap_identity_req)
949 wowlan_config_cmd->wakeup_filter |=
950 cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ);
951 if (wowlan->four_way_handshake)
952 wowlan_config_cmd->wakeup_filter |=
953 cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
954 if (wowlan->n_patterns)
955 wowlan_config_cmd->wakeup_filter |=
956 cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH);
957
958 if (wowlan->rfkill_release)
959 wowlan_config_cmd->wakeup_filter |=
960 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
961
962 if (wowlan->tcp) {
963 /*
964 * Set the "link change" (really "link lost") flag as well
965 * since that implies losing the TCP connection.
966 */
967 wowlan_config_cmd->wakeup_filter |=
968 cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS |
969 IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE |
970 IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET |
971 IWL_WOWLAN_WAKEUP_LINK_CHANGE);
972 }
973
974 if (wowlan->any) {
975 wowlan_config_cmd->wakeup_filter |=
976 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
977 IWL_WOWLAN_WAKEUP_LINK_CHANGE |
978 IWL_WOWLAN_WAKEUP_RX_FRAME |
979 IWL_WOWLAN_WAKEUP_BCN_FILTERING);
980 }
981
982 return 0;
983 }
984
iwl_mvm_wowlan_config_key_params(struct iwl_mvm * mvm,struct ieee80211_vif * vif)985 static int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm,
986 struct ieee80211_vif *vif)
987 {
988 bool unified = fw_has_capa(&mvm->fw->ucode_capa,
989 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
990 struct wowlan_key_reprogram_data key_data = {};
991 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
992 int ret;
993 u8 cmd_ver;
994 size_t cmd_size;
995
996 if (!unified) {
997 /*
998 * if we have to configure keys, call ieee80211_iter_keys(),
999 * as we need non-atomic context in order to take the
1000 * required locks.
1001 */
1002 /*
1003 * Note that currently we don't use CMD_ASYNC in the iterator.
1004 * In case of key_data.configure_keys, all the configured
1005 * commands are SYNC, and iwl_mvm_wowlan_program_keys() will
1006 * take care of locking/unlocking mvm->mutex.
1007 */
1008 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_program_keys,
1009 &key_data);
1010
1011 if (key_data.error)
1012 return -EIO;
1013 }
1014
1015 ret = iwl_mvm_wowlan_config_rsc_tsc(mvm, vif);
1016 if (ret)
1017 return ret;
1018
1019 if (!fw_has_api(&mvm->fw->ucode_capa,
1020 IWL_UCODE_TLV_API_TKIP_MIC_KEYS)) {
1021 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP,
1022 WOWLAN_TKIP_PARAM,
1023 IWL_FW_CMD_VER_UNKNOWN);
1024 struct wowlan_key_tkip_data tkip_data = {};
1025 int size;
1026
1027 if (ver == 2) {
1028 size = sizeof(tkip_data.tkip);
1029 tkip_data.tkip.sta_id =
1030 cpu_to_le32(mvmvif->ap_sta_id);
1031 } else if (ver == 1 || ver == IWL_FW_CMD_VER_UNKNOWN) {
1032 size = sizeof(struct iwl_wowlan_tkip_params_cmd_ver_1);
1033 } else {
1034 WARN_ON_ONCE(1);
1035 return -EINVAL;
1036 }
1037
1038 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_get_tkip_data,
1039 &tkip_data);
1040
1041 if (tkip_data.have_tkip_keys) {
1042 /* send relevant data according to CMD version */
1043 ret = iwl_mvm_send_cmd_pdu(mvm,
1044 WOWLAN_TKIP_PARAM,
1045 CMD_ASYNC, size,
1046 &tkip_data.tkip);
1047 if (ret)
1048 return ret;
1049 }
1050 }
1051
1052 /* configure rekey data only if offloaded rekey is supported (d3) */
1053 if (mvmvif->rekey_data.valid) {
1054 struct iwl_wowlan_kek_kck_material_cmd_v4 kek_kck_cmd = {};
1055 struct iwl_wowlan_kek_kck_material_cmd_v4 *_kek_kck_cmd =
1056 &kek_kck_cmd;
1057 struct wowlan_key_gtk_type_iter gtk_type_data = {
1058 .kek_kck_cmd = _kek_kck_cmd,
1059 };
1060
1061 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,
1062 IWL_ALWAYS_LONG_GROUP,
1063 WOWLAN_KEK_KCK_MATERIAL,
1064 IWL_FW_CMD_VER_UNKNOWN);
1065 if (WARN_ON(cmd_ver != 2 && cmd_ver != 3 && cmd_ver != 4 &&
1066 cmd_ver != IWL_FW_CMD_VER_UNKNOWN))
1067 return -EINVAL;
1068
1069 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_gtk_type_iter,
1070 >k_type_data);
1071
1072 memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck,
1073 mvmvif->rekey_data.kck_len);
1074 kek_kck_cmd.kck_len = cpu_to_le16(mvmvif->rekey_data.kck_len);
1075 memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek,
1076 mvmvif->rekey_data.kek_len);
1077 kek_kck_cmd.kek_len = cpu_to_le16(mvmvif->rekey_data.kek_len);
1078 kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr;
1079 kek_kck_cmd.akm = cpu_to_le32(mvmvif->rekey_data.akm);
1080 kek_kck_cmd.sta_id = cpu_to_le32(mvmvif->ap_sta_id);
1081
1082 if (cmd_ver == 4) {
1083 cmd_size = sizeof(struct iwl_wowlan_kek_kck_material_cmd_v4);
1084 } else {
1085 if (cmd_ver == 3)
1086 cmd_size =
1087 sizeof(struct iwl_wowlan_kek_kck_material_cmd_v3);
1088 else
1089 cmd_size =
1090 sizeof(struct iwl_wowlan_kek_kck_material_cmd_v2);
1091 /* skip the sta_id at the beginning */
1092 _kek_kck_cmd = (void *)
1093 ((u8 *)_kek_kck_cmd + sizeof(kek_kck_cmd.sta_id));
1094 }
1095
1096 IWL_DEBUG_WOWLAN(mvm, "setting akm %d\n",
1097 mvmvif->rekey_data.akm);
1098
1099 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_KEK_KCK_MATERIAL,
1100 CMD_ASYNC, cmd_size, _kek_kck_cmd);
1101 if (ret)
1102 return ret;
1103 }
1104
1105 return 0;
1106 }
1107
1108 static int
iwl_mvm_wowlan_config(struct iwl_mvm * mvm,struct cfg80211_wowlan * wowlan,struct iwl_wowlan_config_cmd * wowlan_config_cmd,struct ieee80211_vif * vif,struct iwl_mvm_vif * mvmvif,struct ieee80211_sta * ap_sta)1109 iwl_mvm_wowlan_config(struct iwl_mvm *mvm,
1110 struct cfg80211_wowlan *wowlan,
1111 struct iwl_wowlan_config_cmd *wowlan_config_cmd,
1112 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
1113 struct ieee80211_sta *ap_sta)
1114 {
1115 int ret;
1116 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1117 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1118
1119 mvm->offload_tid = wowlan_config_cmd->offloading_tid;
1120
1121 if (!unified_image) {
1122 ret = iwl_mvm_switch_to_d3(mvm);
1123 if (ret)
1124 return ret;
1125
1126 ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta);
1127 if (ret)
1128 return ret;
1129 }
1130
1131 /*
1132 * This needs to be unlocked due to lock ordering
1133 * constraints. Since we're in the suspend path
1134 * that isn't really a problem though.
1135 */
1136 mutex_unlock(&mvm->mutex);
1137 ret = iwl_mvm_wowlan_config_key_params(mvm, vif);
1138 mutex_lock(&mvm->mutex);
1139 if (ret)
1140 return ret;
1141
1142 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0,
1143 sizeof(*wowlan_config_cmd),
1144 wowlan_config_cmd);
1145 if (ret)
1146 return ret;
1147
1148 if (fw_has_api(&mvm->fw->ucode_capa,
1149 IWL_UCODE_TLV_API_WOWLAN_TCP_SYN_WAKE))
1150 ret = iwl_mvm_send_patterns(mvm, vif, wowlan);
1151 else
1152 ret = iwl_mvm_send_patterns_v1(mvm, wowlan);
1153 if (ret)
1154 return ret;
1155
1156 return iwl_mvm_send_proto_offload(mvm, vif, false, true, 0);
1157 }
1158
1159 static int
iwl_mvm_netdetect_config(struct iwl_mvm * mvm,struct cfg80211_wowlan * wowlan,struct cfg80211_sched_scan_request * nd_config,struct ieee80211_vif * vif)1160 iwl_mvm_netdetect_config(struct iwl_mvm *mvm,
1161 struct cfg80211_wowlan *wowlan,
1162 struct cfg80211_sched_scan_request *nd_config,
1163 struct ieee80211_vif *vif)
1164 {
1165 int ret;
1166 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1167 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1168
1169 if (!unified_image) {
1170 ret = iwl_mvm_switch_to_d3(mvm);
1171 if (ret)
1172 return ret;
1173 } else {
1174 /* In theory, we wouldn't have to stop a running sched
1175 * scan in order to start another one (for
1176 * net-detect). But in practice this doesn't seem to
1177 * work properly, so stop any running sched_scan now.
1178 */
1179 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
1180 if (ret)
1181 return ret;
1182 }
1183
1184 ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies,
1185 IWL_MVM_SCAN_NETDETECT);
1186 if (ret)
1187 return ret;
1188
1189 if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels))
1190 return -EBUSY;
1191
1192 /* save the sched scan matchsets... */
1193 if (nd_config->n_match_sets) {
1194 mvm->nd_match_sets = kmemdup(nd_config->match_sets,
1195 sizeof(*nd_config->match_sets) *
1196 nd_config->n_match_sets,
1197 GFP_KERNEL);
1198 if (mvm->nd_match_sets)
1199 mvm->n_nd_match_sets = nd_config->n_match_sets;
1200 }
1201
1202 /* ...and the sched scan channels for later reporting */
1203 mvm->nd_channels = kmemdup(nd_config->channels,
1204 sizeof(*nd_config->channels) *
1205 nd_config->n_channels,
1206 GFP_KERNEL);
1207 if (mvm->nd_channels)
1208 mvm->n_nd_channels = nd_config->n_channels;
1209
1210 return 0;
1211 }
1212
iwl_mvm_free_nd(struct iwl_mvm * mvm)1213 static void iwl_mvm_free_nd(struct iwl_mvm *mvm)
1214 {
1215 kfree(mvm->nd_match_sets);
1216 mvm->nd_match_sets = NULL;
1217 mvm->n_nd_match_sets = 0;
1218 kfree(mvm->nd_channels);
1219 mvm->nd_channels = NULL;
1220 mvm->n_nd_channels = 0;
1221 }
1222
__iwl_mvm_suspend(struct ieee80211_hw * hw,struct cfg80211_wowlan * wowlan,bool test)1223 static int __iwl_mvm_suspend(struct ieee80211_hw *hw,
1224 struct cfg80211_wowlan *wowlan,
1225 bool test)
1226 {
1227 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1228 struct ieee80211_vif *vif = NULL;
1229 struct iwl_mvm_vif *mvmvif = NULL;
1230 struct ieee80211_sta *ap_sta = NULL;
1231 struct iwl_d3_manager_config d3_cfg_cmd_data = {
1232 /*
1233 * Program the minimum sleep time to 10 seconds, as many
1234 * platforms have issues processing a wakeup signal while
1235 * still being in the process of suspending.
1236 */
1237 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000),
1238 };
1239 struct iwl_host_cmd d3_cfg_cmd = {
1240 .id = D3_CONFIG_CMD,
1241 .flags = CMD_WANT_SKB | CMD_SEND_IN_D3,
1242 .data[0] = &d3_cfg_cmd_data,
1243 .len[0] = sizeof(d3_cfg_cmd_data),
1244 };
1245 int ret;
1246 int len __maybe_unused;
1247 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1248 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1249
1250 if (!wowlan) {
1251 /*
1252 * mac80211 shouldn't get here, but for D3 test
1253 * it doesn't warrant a warning
1254 */
1255 WARN_ON(!test);
1256 return -EINVAL;
1257 }
1258
1259 mutex_lock(&mvm->mutex);
1260
1261 set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
1262
1263 synchronize_net();
1264
1265 vif = iwl_mvm_get_bss_vif(mvm);
1266 if (IS_ERR_OR_NULL(vif)) {
1267 ret = 1;
1268 goto out_noreset;
1269 }
1270
1271 mvmvif = iwl_mvm_vif_from_mac80211(vif);
1272
1273 if (mvmvif->ap_sta_id == IWL_MVM_INVALID_STA) {
1274 /* if we're not associated, this must be netdetect */
1275 if (!wowlan->nd_config) {
1276 ret = 1;
1277 goto out_noreset;
1278 }
1279
1280 ret = iwl_mvm_netdetect_config(
1281 mvm, wowlan, wowlan->nd_config, vif);
1282 if (ret)
1283 goto out;
1284
1285 mvm->net_detect = true;
1286 } else {
1287 struct iwl_wowlan_config_cmd wowlan_config_cmd = {};
1288
1289 wowlan_config_cmd.sta_id = mvmvif->ap_sta_id;
1290
1291 ap_sta = rcu_dereference_protected(
1292 mvm->fw_id_to_mac_id[mvmvif->ap_sta_id],
1293 lockdep_is_held(&mvm->mutex));
1294 if (IS_ERR_OR_NULL(ap_sta)) {
1295 ret = -EINVAL;
1296 goto out_noreset;
1297 }
1298
1299 ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1300 vif, mvmvif, ap_sta);
1301 if (ret)
1302 goto out_noreset;
1303 ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1304 vif, mvmvif, ap_sta);
1305 if (ret)
1306 goto out;
1307
1308 mvm->net_detect = false;
1309 }
1310
1311 ret = iwl_mvm_power_update_device(mvm);
1312 if (ret)
1313 goto out;
1314
1315 ret = iwl_mvm_power_update_mac(mvm);
1316 if (ret)
1317 goto out;
1318
1319 #ifdef CONFIG_IWLWIFI_DEBUGFS
1320 if (mvm->d3_wake_sysassert)
1321 d3_cfg_cmd_data.wakeup_flags |=
1322 cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR);
1323 #endif
1324
1325 /*
1326 * Prior to 9000 device family the driver needs to stop the dbg
1327 * recording before entering D3. In later devices the FW stops the
1328 * recording automatically.
1329 */
1330 if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_9000)
1331 iwl_fw_dbg_stop_restart_recording(&mvm->fwrt, NULL, true);
1332
1333 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_D3;
1334
1335 /* must be last -- this switches firmware state */
1336 ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd);
1337 if (ret)
1338 goto out;
1339 #ifdef CONFIG_IWLWIFI_DEBUGFS
1340 len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt);
1341 if (len >= sizeof(u32)) {
1342 mvm->d3_test_pme_ptr =
1343 le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data);
1344 }
1345 #endif
1346 iwl_free_resp(&d3_cfg_cmd);
1347
1348 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1349
1350 ret = iwl_trans_d3_suspend(mvm->trans, test, !unified_image);
1351 out:
1352 if (ret < 0) {
1353 iwl_mvm_free_nd(mvm);
1354
1355 if (!unified_image) {
1356 if (mvm->fw_restart > 0) {
1357 mvm->fw_restart--;
1358 ieee80211_restart_hw(mvm->hw);
1359 }
1360 }
1361
1362 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
1363 }
1364 out_noreset:
1365 mutex_unlock(&mvm->mutex);
1366
1367 return ret;
1368 }
1369
iwl_mvm_suspend(struct ieee80211_hw * hw,struct cfg80211_wowlan * wowlan)1370 int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
1371 {
1372 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1373
1374 iwl_mvm_pause_tcm(mvm, true);
1375
1376 iwl_fw_runtime_suspend(&mvm->fwrt);
1377
1378 return __iwl_mvm_suspend(hw, wowlan, false);
1379 }
1380
1381 /* converted data from the different status responses */
1382 struct iwl_wowlan_status_data {
1383 u16 pattern_number;
1384 u16 qos_seq_ctr[8];
1385 u32 wakeup_reasons;
1386 u32 wake_packet_length;
1387 u32 wake_packet_bufsize;
1388 const u8 *wake_packet;
1389 };
1390
iwl_mvm_report_wakeup_reasons(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_wowlan_status_data * status)1391 static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm,
1392 struct ieee80211_vif *vif,
1393 struct iwl_wowlan_status_data *status)
1394 {
1395 struct sk_buff *pkt = NULL;
1396 struct cfg80211_wowlan_wakeup wakeup = {
1397 .pattern_idx = -1,
1398 };
1399 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
1400 u32 reasons = status->wakeup_reasons;
1401
1402 if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
1403 wakeup_report = NULL;
1404 goto report;
1405 }
1406
1407 pm_wakeup_event(mvm->dev, 0);
1408
1409 if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET)
1410 wakeup.magic_pkt = true;
1411
1412 if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN)
1413 wakeup.pattern_idx =
1414 status->pattern_number;
1415
1416 if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1417 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH))
1418 wakeup.disconnect = true;
1419
1420 if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)
1421 wakeup.gtk_rekey_failure = true;
1422
1423 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
1424 wakeup.rfkill_release = true;
1425
1426 if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST)
1427 wakeup.eap_identity_req = true;
1428
1429 if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE)
1430 wakeup.four_way_handshake = true;
1431
1432 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS)
1433 wakeup.tcp_connlost = true;
1434
1435 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE)
1436 wakeup.tcp_nomoretokens = true;
1437
1438 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET)
1439 wakeup.tcp_match = true;
1440
1441 if (status->wake_packet_bufsize) {
1442 int pktsize = status->wake_packet_bufsize;
1443 int pktlen = status->wake_packet_length;
1444 const u8 *pktdata = status->wake_packet;
1445 struct ieee80211_hdr *hdr = (void *)pktdata;
1446 int truncated = pktlen - pktsize;
1447
1448 /* this would be a firmware bug */
1449 if (WARN_ON_ONCE(truncated < 0))
1450 truncated = 0;
1451
1452 if (ieee80211_is_data(hdr->frame_control)) {
1453 int hdrlen = ieee80211_hdrlen(hdr->frame_control);
1454 int ivlen = 0, icvlen = 4; /* also FCS */
1455
1456 pkt = alloc_skb(pktsize, GFP_KERNEL);
1457 if (!pkt)
1458 goto report;
1459
1460 skb_put_data(pkt, pktdata, hdrlen);
1461 pktdata += hdrlen;
1462 pktsize -= hdrlen;
1463
1464 if (ieee80211_has_protected(hdr->frame_control)) {
1465 /*
1466 * This is unlocked and using gtk_i(c)vlen,
1467 * but since everything is under RTNL still
1468 * that's not really a problem - changing
1469 * it would be difficult.
1470 */
1471 if (is_multicast_ether_addr(hdr->addr1)) {
1472 ivlen = mvm->gtk_ivlen;
1473 icvlen += mvm->gtk_icvlen;
1474 } else {
1475 ivlen = mvm->ptk_ivlen;
1476 icvlen += mvm->ptk_icvlen;
1477 }
1478 }
1479
1480 /* if truncated, FCS/ICV is (partially) gone */
1481 if (truncated >= icvlen) {
1482 icvlen = 0;
1483 truncated -= icvlen;
1484 } else {
1485 icvlen -= truncated;
1486 truncated = 0;
1487 }
1488
1489 pktsize -= ivlen + icvlen;
1490 pktdata += ivlen;
1491
1492 skb_put_data(pkt, pktdata, pktsize);
1493
1494 if (ieee80211_data_to_8023(pkt, vif->addr, vif->type))
1495 goto report;
1496 wakeup.packet = pkt->data;
1497 wakeup.packet_present_len = pkt->len;
1498 wakeup.packet_len = pkt->len - truncated;
1499 wakeup.packet_80211 = false;
1500 } else {
1501 int fcslen = 4;
1502
1503 if (truncated >= 4) {
1504 truncated -= 4;
1505 fcslen = 0;
1506 } else {
1507 fcslen -= truncated;
1508 truncated = 0;
1509 }
1510 pktsize -= fcslen;
1511 wakeup.packet = status->wake_packet;
1512 wakeup.packet_present_len = pktsize;
1513 wakeup.packet_len = pktlen - truncated;
1514 wakeup.packet_80211 = true;
1515 }
1516 }
1517
1518 report:
1519 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
1520 kfree_skb(pkt);
1521 }
1522
iwl_mvm_aes_sc_to_seq(struct aes_sc * sc,struct ieee80211_key_seq * seq)1523 static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc,
1524 struct ieee80211_key_seq *seq)
1525 {
1526 u64 pn;
1527
1528 pn = le64_to_cpu(sc->pn);
1529 seq->ccmp.pn[0] = pn >> 40;
1530 seq->ccmp.pn[1] = pn >> 32;
1531 seq->ccmp.pn[2] = pn >> 24;
1532 seq->ccmp.pn[3] = pn >> 16;
1533 seq->ccmp.pn[4] = pn >> 8;
1534 seq->ccmp.pn[5] = pn;
1535 }
1536
iwl_mvm_tkip_sc_to_seq(struct tkip_sc * sc,struct ieee80211_key_seq * seq)1537 static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc,
1538 struct ieee80211_key_seq *seq)
1539 {
1540 seq->tkip.iv32 = le32_to_cpu(sc->iv32);
1541 seq->tkip.iv16 = le16_to_cpu(sc->iv16);
1542 }
1543
iwl_mvm_set_aes_rx_seq(struct iwl_mvm * mvm,struct aes_sc * scs,struct ieee80211_sta * sta,struct ieee80211_key_conf * key)1544 static void iwl_mvm_set_aes_rx_seq(struct iwl_mvm *mvm, struct aes_sc *scs,
1545 struct ieee80211_sta *sta,
1546 struct ieee80211_key_conf *key)
1547 {
1548 int tid;
1549
1550 BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS);
1551
1552 if (sta && iwl_mvm_has_new_rx_api(mvm)) {
1553 struct iwl_mvm_sta *mvmsta;
1554 struct iwl_mvm_key_pn *ptk_pn;
1555
1556 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1557
1558 rcu_read_lock();
1559 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]);
1560 if (WARN_ON(!ptk_pn)) {
1561 rcu_read_unlock();
1562 return;
1563 }
1564
1565 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1566 struct ieee80211_key_seq seq = {};
1567 int i;
1568
1569 iwl_mvm_aes_sc_to_seq(&scs[tid], &seq);
1570 ieee80211_set_key_rx_seq(key, tid, &seq);
1571 for (i = 1; i < mvm->trans->num_rx_queues; i++)
1572 memcpy(ptk_pn->q[i].pn[tid],
1573 seq.ccmp.pn, IEEE80211_CCMP_PN_LEN);
1574 }
1575 rcu_read_unlock();
1576 } else {
1577 for (tid = 0; tid < IWL_NUM_RSC; tid++) {
1578 struct ieee80211_key_seq seq = {};
1579
1580 iwl_mvm_aes_sc_to_seq(&scs[tid], &seq);
1581 ieee80211_set_key_rx_seq(key, tid, &seq);
1582 }
1583 }
1584 }
1585
iwl_mvm_set_tkip_rx_seq(struct tkip_sc * scs,struct ieee80211_key_conf * key)1586 static void iwl_mvm_set_tkip_rx_seq(struct tkip_sc *scs,
1587 struct ieee80211_key_conf *key)
1588 {
1589 int tid;
1590
1591 BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS);
1592
1593 for (tid = 0; tid < IWL_NUM_RSC; tid++) {
1594 struct ieee80211_key_seq seq = {};
1595
1596 iwl_mvm_tkip_sc_to_seq(&scs[tid], &seq);
1597 ieee80211_set_key_rx_seq(key, tid, &seq);
1598 }
1599 }
1600
iwl_mvm_set_key_rx_seq(struct iwl_mvm * mvm,struct ieee80211_key_conf * key,struct iwl_wowlan_status * status)1601 static void iwl_mvm_set_key_rx_seq(struct iwl_mvm *mvm,
1602 struct ieee80211_key_conf *key,
1603 struct iwl_wowlan_status *status)
1604 {
1605 union iwl_all_tsc_rsc *rsc = &status->gtk[0].rsc.all_tsc_rsc;
1606
1607 switch (key->cipher) {
1608 case WLAN_CIPHER_SUITE_CCMP:
1609 case WLAN_CIPHER_SUITE_GCMP:
1610 case WLAN_CIPHER_SUITE_GCMP_256:
1611 iwl_mvm_set_aes_rx_seq(mvm, rsc->aes.multicast_rsc, NULL, key);
1612 break;
1613 case WLAN_CIPHER_SUITE_TKIP:
1614 iwl_mvm_set_tkip_rx_seq(rsc->tkip.multicast_rsc, key);
1615 break;
1616 default:
1617 WARN_ON(1);
1618 }
1619 }
1620
1621 struct iwl_mvm_d3_gtk_iter_data {
1622 struct iwl_mvm *mvm;
1623 struct iwl_wowlan_status *status;
1624 void *last_gtk;
1625 u32 cipher;
1626 bool find_phase, unhandled_cipher;
1627 int num_keys;
1628 };
1629
iwl_mvm_d3_update_keys(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key,void * _data)1630 static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw,
1631 struct ieee80211_vif *vif,
1632 struct ieee80211_sta *sta,
1633 struct ieee80211_key_conf *key,
1634 void *_data)
1635 {
1636 struct iwl_mvm_d3_gtk_iter_data *data = _data;
1637
1638 if (data->unhandled_cipher)
1639 return;
1640
1641 switch (key->cipher) {
1642 case WLAN_CIPHER_SUITE_WEP40:
1643 case WLAN_CIPHER_SUITE_WEP104:
1644 /* ignore WEP completely, nothing to do */
1645 return;
1646 case WLAN_CIPHER_SUITE_CCMP:
1647 case WLAN_CIPHER_SUITE_GCMP:
1648 case WLAN_CIPHER_SUITE_GCMP_256:
1649 case WLAN_CIPHER_SUITE_TKIP:
1650 /* we support these */
1651 break;
1652 default:
1653 /* everything else (even CMAC for MFP) - disconnect from AP */
1654 data->unhandled_cipher = true;
1655 return;
1656 }
1657
1658 data->num_keys++;
1659
1660 /*
1661 * pairwise key - update sequence counters only;
1662 * note that this assumes no TDLS sessions are active
1663 */
1664 if (sta) {
1665 struct ieee80211_key_seq seq = {};
1666 union iwl_all_tsc_rsc *sc =
1667 &data->status->gtk[0].rsc.all_tsc_rsc;
1668
1669 if (data->find_phase)
1670 return;
1671
1672 switch (key->cipher) {
1673 case WLAN_CIPHER_SUITE_CCMP:
1674 case WLAN_CIPHER_SUITE_GCMP:
1675 case WLAN_CIPHER_SUITE_GCMP_256:
1676 iwl_mvm_set_aes_rx_seq(data->mvm, sc->aes.unicast_rsc,
1677 sta, key);
1678 atomic64_set(&key->tx_pn, le64_to_cpu(sc->aes.tsc.pn));
1679 break;
1680 case WLAN_CIPHER_SUITE_TKIP:
1681 iwl_mvm_tkip_sc_to_seq(&sc->tkip.tsc, &seq);
1682 iwl_mvm_set_tkip_rx_seq(sc->tkip.unicast_rsc, key);
1683 atomic64_set(&key->tx_pn,
1684 (u64)seq.tkip.iv16 |
1685 ((u64)seq.tkip.iv32 << 16));
1686 break;
1687 }
1688
1689 /* that's it for this key */
1690 return;
1691 }
1692
1693 if (data->find_phase) {
1694 data->last_gtk = key;
1695 data->cipher = key->cipher;
1696 return;
1697 }
1698
1699 if (data->status->num_of_gtk_rekeys)
1700 ieee80211_remove_key(key);
1701 else if (data->last_gtk == key)
1702 iwl_mvm_set_key_rx_seq(data->mvm, key, data->status);
1703 }
1704
iwl_mvm_setup_connection_keep(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_wowlan_status * status)1705 static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm,
1706 struct ieee80211_vif *vif,
1707 struct iwl_wowlan_status *status)
1708 {
1709 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1710 struct iwl_mvm_d3_gtk_iter_data gtkdata = {
1711 .mvm = mvm,
1712 .status = status,
1713 };
1714 u32 disconnection_reasons =
1715 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1716 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH;
1717
1718 if (!status || !vif->bss_conf.bssid)
1719 return false;
1720
1721 if (le32_to_cpu(status->wakeup_reasons) & disconnection_reasons)
1722 return false;
1723
1724 /* find last GTK that we used initially, if any */
1725 gtkdata.find_phase = true;
1726 ieee80211_iter_keys(mvm->hw, vif,
1727 iwl_mvm_d3_update_keys, >kdata);
1728 /* not trying to keep connections with MFP/unhandled ciphers */
1729 if (gtkdata.unhandled_cipher)
1730 return false;
1731 if (!gtkdata.num_keys)
1732 goto out;
1733 if (!gtkdata.last_gtk)
1734 return false;
1735
1736 /*
1737 * invalidate all other GTKs that might still exist and update
1738 * the one that we used
1739 */
1740 gtkdata.find_phase = false;
1741 ieee80211_iter_keys(mvm->hw, vif,
1742 iwl_mvm_d3_update_keys, >kdata);
1743
1744 IWL_DEBUG_WOWLAN(mvm, "num of GTK rekeying %d\n",
1745 le32_to_cpu(status->num_of_gtk_rekeys));
1746 if (status->num_of_gtk_rekeys) {
1747 struct ieee80211_key_conf *key;
1748 struct {
1749 struct ieee80211_key_conf conf;
1750 u8 key[32];
1751 } conf = {
1752 .conf.cipher = gtkdata.cipher,
1753 .conf.keyidx =
1754 iwlmvm_wowlan_gtk_idx(&status->gtk[0]),
1755 };
1756 __be64 replay_ctr;
1757
1758 IWL_DEBUG_WOWLAN(mvm,
1759 "Received from FW GTK cipher %d, key index %d\n",
1760 conf.conf.cipher, conf.conf.keyidx);
1761 switch (gtkdata.cipher) {
1762 case WLAN_CIPHER_SUITE_CCMP:
1763 case WLAN_CIPHER_SUITE_GCMP:
1764 BUILD_BUG_ON(WLAN_KEY_LEN_CCMP != WLAN_KEY_LEN_GCMP);
1765 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_CCMP);
1766 conf.conf.keylen = WLAN_KEY_LEN_CCMP;
1767 memcpy(conf.conf.key, status->gtk[0].key,
1768 WLAN_KEY_LEN_CCMP);
1769 break;
1770 case WLAN_CIPHER_SUITE_GCMP_256:
1771 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_GCMP_256);
1772 conf.conf.keylen = WLAN_KEY_LEN_GCMP_256;
1773 memcpy(conf.conf.key, status->gtk[0].key,
1774 WLAN_KEY_LEN_GCMP_256);
1775 break;
1776 case WLAN_CIPHER_SUITE_TKIP:
1777 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_TKIP);
1778 conf.conf.keylen = WLAN_KEY_LEN_TKIP;
1779 memcpy(conf.conf.key, status->gtk[0].key, 16);
1780 /* leave TX MIC key zeroed, we don't use it anyway */
1781 memcpy(conf.conf.key +
1782 NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
1783 status->gtk[0].tkip_mic_key, 8);
1784 break;
1785 }
1786
1787 key = ieee80211_gtk_rekey_add(vif, &conf.conf);
1788 if (IS_ERR(key))
1789 return false;
1790 iwl_mvm_set_key_rx_seq(mvm, key, status);
1791
1792 replay_ctr =
1793 cpu_to_be64(le64_to_cpu(status->replay_ctr));
1794
1795 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid,
1796 (void *)&replay_ctr, GFP_KERNEL);
1797 }
1798
1799 out:
1800 if (iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP,
1801 WOWLAN_GET_STATUSES, 0) < 10) {
1802 mvmvif->seqno_valid = true;
1803 /* +0x10 because the set API expects next-to-use, not last-used */
1804 mvmvif->seqno = le16_to_cpu(status->non_qos_seq_ctr) + 0x10;
1805 }
1806
1807 return true;
1808 }
1809
1810 /* Occasionally, templates would be nice. This is one of those times ... */
1811 #define iwl_mvm_parse_wowlan_status_common(_ver) \
1812 static struct iwl_wowlan_status * \
1813 iwl_mvm_parse_wowlan_status_common_ ## _ver(struct iwl_mvm *mvm, \
1814 void *_data, int len) \
1815 { \
1816 struct iwl_wowlan_status *status; \
1817 struct iwl_wowlan_status_ ##_ver *data = _data; \
1818 int data_size; \
1819 \
1820 if (len < sizeof(*data)) { \
1821 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \
1822 return ERR_PTR(-EIO); \
1823 } \
1824 \
1825 data_size = ALIGN(le32_to_cpu(data->wake_packet_bufsize), 4); \
1826 if (len != sizeof(*data) + data_size) { \
1827 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \
1828 return ERR_PTR(-EIO); \
1829 } \
1830 \
1831 status = kzalloc(sizeof(*status) + data_size, GFP_KERNEL); \
1832 if (!status) \
1833 return ERR_PTR(-ENOMEM); \
1834 \
1835 /* copy all the common fields */ \
1836 status->replay_ctr = data->replay_ctr; \
1837 status->pattern_number = data->pattern_number; \
1838 status->non_qos_seq_ctr = data->non_qos_seq_ctr; \
1839 memcpy(status->qos_seq_ctr, data->qos_seq_ctr, \
1840 sizeof(status->qos_seq_ctr)); \
1841 status->wakeup_reasons = data->wakeup_reasons; \
1842 status->num_of_gtk_rekeys = data->num_of_gtk_rekeys; \
1843 status->received_beacons = data->received_beacons; \
1844 status->wake_packet_length = data->wake_packet_length; \
1845 status->wake_packet_bufsize = data->wake_packet_bufsize; \
1846 memcpy(status->wake_packet, data->wake_packet, \
1847 le32_to_cpu(status->wake_packet_bufsize)); \
1848 \
1849 return status; \
1850 }
1851
1852 iwl_mvm_parse_wowlan_status_common(v6)
iwl_mvm_parse_wowlan_status_common(v7)1853 iwl_mvm_parse_wowlan_status_common(v7)
1854 iwl_mvm_parse_wowlan_status_common(v9)
1855
1856 static struct iwl_wowlan_status *
1857 iwl_mvm_send_wowlan_get_status(struct iwl_mvm *mvm, u8 sta_id)
1858 {
1859 struct iwl_wowlan_status *status;
1860 struct iwl_wowlan_get_status_cmd get_status_cmd = {
1861 .sta_id = cpu_to_le32(sta_id),
1862 };
1863 struct iwl_host_cmd cmd = {
1864 .id = WOWLAN_GET_STATUSES,
1865 .flags = CMD_WANT_SKB,
1866 .data = { &get_status_cmd, },
1867 .len = { sizeof(get_status_cmd), },
1868 };
1869 int ret, len;
1870 u8 notif_ver;
1871 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP,
1872 WOWLAN_GET_STATUSES,
1873 IWL_FW_CMD_VER_UNKNOWN);
1874
1875 if (cmd_ver == IWL_FW_CMD_VER_UNKNOWN)
1876 cmd.len[0] = 0;
1877
1878 lockdep_assert_held(&mvm->mutex);
1879
1880 ret = iwl_mvm_send_cmd(mvm, &cmd);
1881 if (ret) {
1882 IWL_ERR(mvm, "failed to query wakeup status (%d)\n", ret);
1883 return ERR_PTR(ret);
1884 }
1885
1886 len = iwl_rx_packet_payload_len(cmd.resp_pkt);
1887
1888 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */
1889 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP,
1890 WOWLAN_GET_STATUSES, 0);
1891 if (!notif_ver)
1892 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
1893 WOWLAN_GET_STATUSES, 7);
1894
1895 if (!fw_has_api(&mvm->fw->ucode_capa,
1896 IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL)) {
1897 struct iwl_wowlan_status_v6 *v6 = (void *)cmd.resp_pkt->data;
1898
1899 status = iwl_mvm_parse_wowlan_status_common_v6(mvm,
1900 cmd.resp_pkt->data,
1901 len);
1902 if (IS_ERR(status))
1903 goto out_free_resp;
1904
1905 BUILD_BUG_ON(sizeof(v6->gtk.decrypt_key) >
1906 sizeof(status->gtk[0].key));
1907 BUILD_BUG_ON(sizeof(v6->gtk.tkip_mic_key) >
1908 sizeof(status->gtk[0].tkip_mic_key));
1909
1910 /* copy GTK info to the right place */
1911 memcpy(status->gtk[0].key, v6->gtk.decrypt_key,
1912 sizeof(v6->gtk.decrypt_key));
1913 memcpy(status->gtk[0].tkip_mic_key, v6->gtk.tkip_mic_key,
1914 sizeof(v6->gtk.tkip_mic_key));
1915 memcpy(&status->gtk[0].rsc, &v6->gtk.rsc,
1916 sizeof(status->gtk[0].rsc));
1917
1918 /* hardcode the key length to 16 since v6 only supports 16 */
1919 status->gtk[0].key_len = 16;
1920
1921 /*
1922 * The key index only uses 2 bits (values 0 to 3) and
1923 * we always set bit 7 which means this is the
1924 * currently used key.
1925 */
1926 status->gtk[0].key_flags = v6->gtk.key_index | BIT(7);
1927 } else if (notif_ver == 7) {
1928 struct iwl_wowlan_status_v7 *v7 = (void *)cmd.resp_pkt->data;
1929
1930 status = iwl_mvm_parse_wowlan_status_common_v7(mvm,
1931 cmd.resp_pkt->data,
1932 len);
1933 if (IS_ERR(status))
1934 goto out_free_resp;
1935
1936 status->gtk[0] = v7->gtk[0];
1937 status->igtk[0] = v7->igtk[0];
1938 } else if (notif_ver == 9 || notif_ver == 10 || notif_ver == 11) {
1939 struct iwl_wowlan_status_v9 *v9 = (void *)cmd.resp_pkt->data;
1940
1941 /* these three command versions have same layout and size, the
1942 * difference is only in a few not used (reserved) fields.
1943 */
1944 status = iwl_mvm_parse_wowlan_status_common_v9(mvm,
1945 cmd.resp_pkt->data,
1946 len);
1947 if (IS_ERR(status))
1948 goto out_free_resp;
1949
1950 status->gtk[0] = v9->gtk[0];
1951 status->igtk[0] = v9->igtk[0];
1952
1953 status->tid_tear_down = v9->tid_tear_down;
1954 } else {
1955 IWL_ERR(mvm,
1956 "Firmware advertises unknown WoWLAN status response %d!\n",
1957 notif_ver);
1958 status = ERR_PTR(-EIO);
1959 }
1960
1961 out_free_resp:
1962 iwl_free_resp(&cmd);
1963 return status;
1964 }
1965
1966 static struct iwl_wowlan_status *
iwl_mvm_get_wakeup_status(struct iwl_mvm * mvm,u8 sta_id)1967 iwl_mvm_get_wakeup_status(struct iwl_mvm *mvm, u8 sta_id)
1968 {
1969 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP,
1970 OFFLOADS_QUERY_CMD,
1971 IWL_FW_CMD_VER_UNKNOWN);
1972 __le32 station_id = cpu_to_le32(sta_id);
1973 u32 cmd_size = cmd_ver != IWL_FW_CMD_VER_UNKNOWN ? sizeof(station_id) : 0;
1974
1975 if (!mvm->net_detect) {
1976 /* only for tracing for now */
1977 int ret = iwl_mvm_send_cmd_pdu(mvm, OFFLOADS_QUERY_CMD, 0,
1978 cmd_size, &station_id);
1979 if (ret)
1980 IWL_ERR(mvm, "failed to query offload statistics (%d)\n", ret);
1981 }
1982
1983 return iwl_mvm_send_wowlan_get_status(mvm, sta_id);
1984 }
1985
1986 /* releases the MVM mutex */
iwl_mvm_query_wakeup_reasons(struct iwl_mvm * mvm,struct ieee80211_vif * vif)1987 static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm,
1988 struct ieee80211_vif *vif)
1989 {
1990 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1991 struct iwl_wowlan_status_data status;
1992 struct iwl_wowlan_status *fw_status;
1993 int i;
1994 bool keep;
1995 struct iwl_mvm_sta *mvm_ap_sta;
1996
1997 fw_status = iwl_mvm_get_wakeup_status(mvm, mvmvif->ap_sta_id);
1998 if (IS_ERR_OR_NULL(fw_status))
1999 goto out_unlock;
2000
2001 IWL_DEBUG_WOWLAN(mvm, "wakeup reason 0x%x\n",
2002 le32_to_cpu(fw_status->wakeup_reasons));
2003
2004 status.pattern_number = le16_to_cpu(fw_status->pattern_number);
2005 for (i = 0; i < 8; i++)
2006 status.qos_seq_ctr[i] =
2007 le16_to_cpu(fw_status->qos_seq_ctr[i]);
2008 status.wakeup_reasons = le32_to_cpu(fw_status->wakeup_reasons);
2009 status.wake_packet_length =
2010 le32_to_cpu(fw_status->wake_packet_length);
2011 status.wake_packet_bufsize =
2012 le32_to_cpu(fw_status->wake_packet_bufsize);
2013 status.wake_packet = fw_status->wake_packet;
2014
2015 /* still at hard-coded place 0 for D3 image */
2016 mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, 0);
2017 if (!mvm_ap_sta)
2018 goto out_free;
2019
2020 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
2021 u16 seq = status.qos_seq_ctr[i];
2022 /* firmware stores last-used value, we store next value */
2023 seq += 0x10;
2024 mvm_ap_sta->tid_data[i].seq_number = seq;
2025 }
2026
2027 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000) {
2028 i = mvm->offload_tid;
2029 iwl_trans_set_q_ptrs(mvm->trans,
2030 mvm_ap_sta->tid_data[i].txq_id,
2031 mvm_ap_sta->tid_data[i].seq_number >> 4);
2032 }
2033
2034 /* now we have all the data we need, unlock to avoid mac80211 issues */
2035 mutex_unlock(&mvm->mutex);
2036
2037 iwl_mvm_report_wakeup_reasons(mvm, vif, &status);
2038
2039 keep = iwl_mvm_setup_connection_keep(mvm, vif, fw_status);
2040
2041 kfree(fw_status);
2042 return keep;
2043
2044 out_free:
2045 kfree(fw_status);
2046 out_unlock:
2047 mutex_unlock(&mvm->mutex);
2048 return false;
2049 }
2050
2051 #define ND_QUERY_BUF_LEN (sizeof(struct iwl_scan_offload_profile_match) * \
2052 IWL_SCAN_MAX_PROFILES)
2053
2054 struct iwl_mvm_nd_query_results {
2055 u32 matched_profiles;
2056 u8 matches[ND_QUERY_BUF_LEN];
2057 };
2058
2059 static int
iwl_mvm_netdetect_query_results(struct iwl_mvm * mvm,struct iwl_mvm_nd_query_results * results)2060 iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm,
2061 struct iwl_mvm_nd_query_results *results)
2062 {
2063 struct iwl_scan_offload_profiles_query *query;
2064 struct iwl_host_cmd cmd = {
2065 .id = SCAN_OFFLOAD_PROFILES_QUERY_CMD,
2066 .flags = CMD_WANT_SKB,
2067 };
2068 int ret, len;
2069 size_t query_len, matches_len;
2070 int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw);
2071
2072 ret = iwl_mvm_send_cmd(mvm, &cmd);
2073 if (ret) {
2074 IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret);
2075 return ret;
2076 }
2077
2078 if (fw_has_api(&mvm->fw->ucode_capa,
2079 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2080 query_len = sizeof(struct iwl_scan_offload_profiles_query);
2081 matches_len = sizeof(struct iwl_scan_offload_profile_match) *
2082 max_profiles;
2083 } else {
2084 query_len = sizeof(struct iwl_scan_offload_profiles_query_v1);
2085 matches_len = sizeof(struct iwl_scan_offload_profile_match_v1) *
2086 max_profiles;
2087 }
2088
2089 len = iwl_rx_packet_payload_len(cmd.resp_pkt);
2090 if (len < query_len) {
2091 IWL_ERR(mvm, "Invalid scan offload profiles query response!\n");
2092 ret = -EIO;
2093 goto out_free_resp;
2094 }
2095
2096 query = (void *)cmd.resp_pkt->data;
2097
2098 results->matched_profiles = le32_to_cpu(query->matched_profiles);
2099 memcpy(results->matches, query->matches, matches_len);
2100
2101 #ifdef CONFIG_IWLWIFI_DEBUGFS
2102 mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done);
2103 #endif
2104
2105 out_free_resp:
2106 iwl_free_resp(&cmd);
2107 return ret;
2108 }
2109
iwl_mvm_query_num_match_chans(struct iwl_mvm * mvm,struct iwl_mvm_nd_query_results * query,int idx)2110 static int iwl_mvm_query_num_match_chans(struct iwl_mvm *mvm,
2111 struct iwl_mvm_nd_query_results *query,
2112 int idx)
2113 {
2114 int n_chans = 0, i;
2115
2116 if (fw_has_api(&mvm->fw->ucode_capa,
2117 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2118 struct iwl_scan_offload_profile_match *matches =
2119 (struct iwl_scan_offload_profile_match *)query->matches;
2120
2121 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; i++)
2122 n_chans += hweight8(matches[idx].matching_channels[i]);
2123 } else {
2124 struct iwl_scan_offload_profile_match_v1 *matches =
2125 (struct iwl_scan_offload_profile_match_v1 *)query->matches;
2126
2127 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1; i++)
2128 n_chans += hweight8(matches[idx].matching_channels[i]);
2129 }
2130
2131 return n_chans;
2132 }
2133
iwl_mvm_query_set_freqs(struct iwl_mvm * mvm,struct iwl_mvm_nd_query_results * query,struct cfg80211_wowlan_nd_match * match,int idx)2134 static void iwl_mvm_query_set_freqs(struct iwl_mvm *mvm,
2135 struct iwl_mvm_nd_query_results *query,
2136 struct cfg80211_wowlan_nd_match *match,
2137 int idx)
2138 {
2139 int i;
2140
2141 if (fw_has_api(&mvm->fw->ucode_capa,
2142 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2143 struct iwl_scan_offload_profile_match *matches =
2144 (struct iwl_scan_offload_profile_match *)query->matches;
2145
2146 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; i++)
2147 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
2148 match->channels[match->n_channels++] =
2149 mvm->nd_channels[i]->center_freq;
2150 } else {
2151 struct iwl_scan_offload_profile_match_v1 *matches =
2152 (struct iwl_scan_offload_profile_match_v1 *)query->matches;
2153
2154 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1 * 8; i++)
2155 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
2156 match->channels[match->n_channels++] =
2157 mvm->nd_channels[i]->center_freq;
2158 }
2159 }
2160
iwl_mvm_query_netdetect_reasons(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2161 static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm,
2162 struct ieee80211_vif *vif)
2163 {
2164 struct cfg80211_wowlan_nd_info *net_detect = NULL;
2165 struct cfg80211_wowlan_wakeup wakeup = {
2166 .pattern_idx = -1,
2167 };
2168 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
2169 struct iwl_mvm_nd_query_results query;
2170 struct iwl_wowlan_status *fw_status;
2171 unsigned long matched_profiles;
2172 u32 reasons = 0;
2173 int i, n_matches, ret;
2174
2175 fw_status = iwl_mvm_get_wakeup_status(mvm, IWL_MVM_INVALID_STA);
2176 if (!IS_ERR_OR_NULL(fw_status)) {
2177 reasons = le32_to_cpu(fw_status->wakeup_reasons);
2178 kfree(fw_status);
2179 }
2180
2181 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
2182 wakeup.rfkill_release = true;
2183
2184 if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS)
2185 goto out;
2186
2187 ret = iwl_mvm_netdetect_query_results(mvm, &query);
2188 if (ret || !query.matched_profiles) {
2189 wakeup_report = NULL;
2190 goto out;
2191 }
2192
2193 matched_profiles = query.matched_profiles;
2194 if (mvm->n_nd_match_sets) {
2195 n_matches = hweight_long(matched_profiles);
2196 } else {
2197 IWL_ERR(mvm, "no net detect match information available\n");
2198 n_matches = 0;
2199 }
2200
2201 net_detect = kzalloc(struct_size(net_detect, matches, n_matches),
2202 GFP_KERNEL);
2203 if (!net_detect || !n_matches)
2204 goto out_report_nd;
2205
2206 for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) {
2207 struct cfg80211_wowlan_nd_match *match;
2208 int idx, n_channels = 0;
2209
2210 n_channels = iwl_mvm_query_num_match_chans(mvm, &query, i);
2211
2212 match = kzalloc(struct_size(match, channels, n_channels),
2213 GFP_KERNEL);
2214 if (!match)
2215 goto out_report_nd;
2216
2217 net_detect->matches[net_detect->n_matches++] = match;
2218
2219 /* We inverted the order of the SSIDs in the scan
2220 * request, so invert the index here.
2221 */
2222 idx = mvm->n_nd_match_sets - i - 1;
2223 match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len;
2224 memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid,
2225 match->ssid.ssid_len);
2226
2227 if (mvm->n_nd_channels < n_channels)
2228 continue;
2229
2230 iwl_mvm_query_set_freqs(mvm, &query, match, i);
2231 }
2232
2233 out_report_nd:
2234 wakeup.net_detect = net_detect;
2235 out:
2236 iwl_mvm_free_nd(mvm);
2237
2238 mutex_unlock(&mvm->mutex);
2239 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
2240
2241 if (net_detect) {
2242 for (i = 0; i < net_detect->n_matches; i++)
2243 kfree(net_detect->matches[i]);
2244 kfree(net_detect);
2245 }
2246 }
2247
iwl_mvm_d3_disconnect_iter(void * data,u8 * mac,struct ieee80211_vif * vif)2248 static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac,
2249 struct ieee80211_vif *vif)
2250 {
2251 /* skip the one we keep connection on */
2252 if (data == vif)
2253 return;
2254
2255 if (vif->type == NL80211_IFTYPE_STATION)
2256 ieee80211_resume_disconnect(vif);
2257 }
2258
iwl_mvm_rt_status(struct iwl_trans * trans,u32 base,u32 * err_id)2259 static bool iwl_mvm_rt_status(struct iwl_trans *trans, u32 base, u32 *err_id)
2260 {
2261 struct error_table_start {
2262 /* cf. struct iwl_error_event_table */
2263 u32 valid;
2264 __le32 err_id;
2265 } err_info;
2266
2267 if (!base)
2268 return false;
2269
2270 iwl_trans_read_mem_bytes(trans, base,
2271 &err_info, sizeof(err_info));
2272 if (err_info.valid && err_id)
2273 *err_id = le32_to_cpu(err_info.err_id);
2274
2275 return !!err_info.valid;
2276 }
2277
iwl_mvm_check_rt_status(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2278 static bool iwl_mvm_check_rt_status(struct iwl_mvm *mvm,
2279 struct ieee80211_vif *vif)
2280 {
2281 u32 err_id;
2282
2283 /* check for lmac1 error */
2284 if (iwl_mvm_rt_status(mvm->trans,
2285 mvm->trans->dbg.lmac_error_event_table[0],
2286 &err_id)) {
2287 if (err_id == RF_KILL_INDICATOR_FOR_WOWLAN) {
2288 struct cfg80211_wowlan_wakeup wakeup = {
2289 .rfkill_release = true,
2290 };
2291 ieee80211_report_wowlan_wakeup(vif, &wakeup,
2292 GFP_KERNEL);
2293 }
2294 return true;
2295 }
2296
2297 /* check if we have lmac2 set and check for error */
2298 if (iwl_mvm_rt_status(mvm->trans,
2299 mvm->trans->dbg.lmac_error_event_table[1], NULL))
2300 return true;
2301
2302 /* check for umac error */
2303 if (iwl_mvm_rt_status(mvm->trans,
2304 mvm->trans->dbg.umac_error_event_table, NULL))
2305 return true;
2306
2307 return false;
2308 }
2309
__iwl_mvm_resume(struct iwl_mvm * mvm,bool test)2310 static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test)
2311 {
2312 struct ieee80211_vif *vif = NULL;
2313 int ret = 1;
2314 enum iwl_d3_status d3_status;
2315 bool keep = false;
2316 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
2317 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2318 bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa,
2319 IWL_UCODE_TLV_CAPA_D0I3_END_FIRST);
2320
2321 mutex_lock(&mvm->mutex);
2322
2323 mvm->last_reset_or_resume_time_jiffies = jiffies;
2324
2325 /* get the BSS vif pointer again */
2326 vif = iwl_mvm_get_bss_vif(mvm);
2327 if (IS_ERR_OR_NULL(vif))
2328 goto err;
2329
2330 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
2331
2332 if (iwl_mvm_check_rt_status(mvm, vif)) {
2333 set_bit(STATUS_FW_ERROR, &mvm->trans->status);
2334 iwl_mvm_dump_nic_error_log(mvm);
2335 iwl_dbg_tlv_time_point(&mvm->fwrt,
2336 IWL_FW_INI_TIME_POINT_FW_ASSERT, NULL);
2337 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert,
2338 false, 0);
2339 ret = 1;
2340 goto err;
2341 }
2342
2343 ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, !unified_image);
2344 if (ret)
2345 goto err;
2346
2347 if (d3_status != IWL_D3_STATUS_ALIVE) {
2348 IWL_INFO(mvm, "Device was reset during suspend\n");
2349 goto err;
2350 }
2351
2352 if (d0i3_first) {
2353 struct iwl_host_cmd cmd = {
2354 .id = D0I3_END_CMD,
2355 .flags = CMD_WANT_SKB | CMD_SEND_IN_D3,
2356 };
2357 int len;
2358
2359 ret = iwl_mvm_send_cmd(mvm, &cmd);
2360 if (ret < 0) {
2361 IWL_ERR(mvm, "Failed to send D0I3_END_CMD first (%d)\n",
2362 ret);
2363 goto err;
2364 }
2365 switch (mvm->cmd_ver.d0i3_resp) {
2366 case 0:
2367 break;
2368 case 1:
2369 len = iwl_rx_packet_payload_len(cmd.resp_pkt);
2370 if (len != sizeof(u32)) {
2371 IWL_ERR(mvm,
2372 "Error with D0I3_END_CMD response size (%d)\n",
2373 len);
2374 goto err;
2375 }
2376 if (IWL_D0I3_RESET_REQUIRE &
2377 le32_to_cpu(*(__le32 *)cmd.resp_pkt->data)) {
2378 iwl_write32(mvm->trans, CSR_RESET,
2379 CSR_RESET_REG_FLAG_FORCE_NMI);
2380 iwl_free_resp(&cmd);
2381 }
2382 break;
2383 default:
2384 WARN_ON(1);
2385 }
2386 }
2387
2388 /* after the successful handshake, we're out of D3 */
2389 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
2390
2391 /*
2392 * Query the current location and source from the D3 firmware so we
2393 * can play it back when we re-intiailize the D0 firmware
2394 */
2395 iwl_mvm_update_changed_regdom(mvm);
2396
2397 /* Re-configure PPAG settings */
2398 iwl_mvm_ppag_send_cmd(mvm);
2399
2400 if (!unified_image)
2401 /* Re-configure default SAR profile */
2402 iwl_mvm_sar_select_profile(mvm, 1, 1);
2403
2404 if (mvm->net_detect) {
2405 /* If this is a non-unified image, we restart the FW,
2406 * so no need to stop the netdetect scan. If that
2407 * fails, continue and try to get the wake-up reasons,
2408 * but trigger a HW restart by keeping a failure code
2409 * in ret.
2410 */
2411 if (unified_image)
2412 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT,
2413 false);
2414
2415 iwl_mvm_query_netdetect_reasons(mvm, vif);
2416 /* has unlocked the mutex, so skip that */
2417 goto out;
2418 } else {
2419 keep = iwl_mvm_query_wakeup_reasons(mvm, vif);
2420 #ifdef CONFIG_IWLWIFI_DEBUGFS
2421 if (keep)
2422 mvm->keep_vif = vif;
2423 #endif
2424 /* has unlocked the mutex, so skip that */
2425 goto out_iterate;
2426 }
2427
2428 err:
2429 iwl_mvm_free_nd(mvm);
2430 mutex_unlock(&mvm->mutex);
2431
2432 out_iterate:
2433 if (!test)
2434 ieee80211_iterate_active_interfaces_mtx(mvm->hw,
2435 IEEE80211_IFACE_ITER_NORMAL,
2436 iwl_mvm_d3_disconnect_iter, keep ? vif : NULL);
2437
2438 out:
2439 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
2440
2441 /* no need to reset the device in unified images, if successful */
2442 if (unified_image && !ret) {
2443 /* nothing else to do if we already sent D0I3_END_CMD */
2444 if (d0i3_first)
2445 return 0;
2446
2447 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL);
2448 if (!ret)
2449 return 0;
2450 }
2451
2452 /*
2453 * Reconfigure the device in one of the following cases:
2454 * 1. We are not using a unified image
2455 * 2. We are using a unified image but had an error while exiting D3
2456 */
2457 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
2458
2459 /* regardless of what happened, we're now out of D3 */
2460 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
2461
2462 return 1;
2463 }
2464
iwl_mvm_resume(struct ieee80211_hw * hw)2465 int iwl_mvm_resume(struct ieee80211_hw *hw)
2466 {
2467 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2468 int ret;
2469
2470 ret = __iwl_mvm_resume(mvm, false);
2471
2472 iwl_mvm_resume_tcm(mvm);
2473
2474 iwl_fw_runtime_resume(&mvm->fwrt);
2475
2476 return ret;
2477 }
2478
iwl_mvm_set_wakeup(struct ieee80211_hw * hw,bool enabled)2479 void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled)
2480 {
2481 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2482
2483 device_set_wakeup_enable(mvm->trans->dev, enabled);
2484 }
2485
2486 #ifdef CONFIG_IWLWIFI_DEBUGFS
iwl_mvm_d3_test_open(struct inode * inode,struct file * file)2487 static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file)
2488 {
2489 struct iwl_mvm *mvm = inode->i_private;
2490 int err;
2491
2492 if (mvm->d3_test_active)
2493 return -EBUSY;
2494
2495 file->private_data = inode->i_private;
2496
2497 iwl_mvm_pause_tcm(mvm, true);
2498
2499 iwl_fw_runtime_suspend(&mvm->fwrt);
2500
2501 /* start pseudo D3 */
2502 rtnl_lock();
2503 wiphy_lock(mvm->hw->wiphy);
2504 err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true);
2505 wiphy_unlock(mvm->hw->wiphy);
2506 rtnl_unlock();
2507 if (err > 0)
2508 err = -EINVAL;
2509 if (err)
2510 return err;
2511
2512 mvm->d3_test_active = true;
2513 mvm->keep_vif = NULL;
2514 return 0;
2515 }
2516
iwl_mvm_d3_test_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)2517 static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf,
2518 size_t count, loff_t *ppos)
2519 {
2520 struct iwl_mvm *mvm = file->private_data;
2521 u32 pme_asserted;
2522
2523 while (true) {
2524 /* read pme_ptr if available */
2525 if (mvm->d3_test_pme_ptr) {
2526 pme_asserted = iwl_trans_read_mem32(mvm->trans,
2527 mvm->d3_test_pme_ptr);
2528 if (pme_asserted)
2529 break;
2530 }
2531
2532 if (msleep_interruptible(100))
2533 break;
2534 }
2535
2536 return 0;
2537 }
2538
iwl_mvm_d3_test_disconn_work_iter(void * _data,u8 * mac,struct ieee80211_vif * vif)2539 static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac,
2540 struct ieee80211_vif *vif)
2541 {
2542 /* skip the one we keep connection on */
2543 if (_data == vif)
2544 return;
2545
2546 if (vif->type == NL80211_IFTYPE_STATION)
2547 ieee80211_connection_loss(vif);
2548 }
2549
iwl_mvm_d3_test_release(struct inode * inode,struct file * file)2550 static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file)
2551 {
2552 struct iwl_mvm *mvm = inode->i_private;
2553 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
2554 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2555
2556 mvm->d3_test_active = false;
2557
2558 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
2559
2560 rtnl_lock();
2561 wiphy_lock(mvm->hw->wiphy);
2562 __iwl_mvm_resume(mvm, true);
2563 wiphy_unlock(mvm->hw->wiphy);
2564 rtnl_unlock();
2565
2566 iwl_mvm_resume_tcm(mvm);
2567
2568 iwl_fw_runtime_resume(&mvm->fwrt);
2569
2570 iwl_abort_notification_waits(&mvm->notif_wait);
2571 if (!unified_image) {
2572 int remaining_time = 10;
2573
2574 ieee80211_restart_hw(mvm->hw);
2575
2576 /* wait for restart and disconnect all interfaces */
2577 while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2578 remaining_time > 0) {
2579 remaining_time--;
2580 msleep(1000);
2581 }
2582
2583 if (remaining_time == 0)
2584 IWL_ERR(mvm, "Timed out waiting for HW restart!\n");
2585 }
2586
2587 ieee80211_iterate_active_interfaces_atomic(
2588 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
2589 iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif);
2590
2591 return 0;
2592 }
2593
2594 const struct file_operations iwl_dbgfs_d3_test_ops = {
2595 .llseek = no_llseek,
2596 .open = iwl_mvm_d3_test_open,
2597 .read = iwl_mvm_d3_test_read,
2598 .release = iwl_mvm_d3_test_release,
2599 };
2600 #endif
2601