1 /******************************************************************************
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
8 * Copyright(c) 2012 - 2014, 2018 - 2020 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
10 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of version 2 of the GNU General Public License as
14 * published by the Free Software Foundation.
15 *
16 * This program is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
20 *
21 * The full GNU General Public License is included in this distribution
22 * in the file called COPYING.
23 *
24 * Contact Information:
25 * Intel Linux Wireless <linuxwifi@intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 * BSD LICENSE
29 *
30 * Copyright(c) 2012 - 2014, 2018 - 2020 Intel Corporation. All rights reserved.
31 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
32 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
33 * All rights reserved.
34 *
35 * Redistribution and use in source and binary forms, with or without
36 * modification, are permitted provided that the following conditions
37 * are met:
38 *
39 * * Redistributions of source code must retain the above copyright
40 * notice, this list of conditions and the following disclaimer.
41 * * Redistributions in binary form must reproduce the above copyright
42 * notice, this list of conditions and the following disclaimer in
43 * the documentation and/or other materials provided with the
44 * distribution.
45 * * Neither the name Intel Corporation nor the names of its
46 * contributors may be used to endorse or promote products derived
47 * from this software without specific prior written permission.
48 *
49 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
50 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
51 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
52 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
53 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
54 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
55 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
56 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
57 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
58 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
59 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
60 *
61 *****************************************************************************/
62
63 #include <linux/etherdevice.h>
64 #include <linux/ip.h>
65 #include <linux/fs.h>
66 #include <net/cfg80211.h>
67 #include <net/ipv6.h>
68 #include <net/tcp.h>
69 #include <net/addrconf.h>
70 #include "iwl-modparams.h"
71 #include "fw-api.h"
72 #include "mvm.h"
73 #include "fw/img.h"
74
iwl_mvm_set_rekey_data(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct cfg80211_gtk_rekey_data *data)75 void iwl_mvm_set_rekey_data(struct ieee80211_hw *hw,
76 struct ieee80211_vif *vif,
77 struct cfg80211_gtk_rekey_data *data)
78 {
79 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
80 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
81
82 mutex_lock(&mvm->mutex);
83
84 mvmvif->rekey_data.kek_len = data->kek_len;
85 mvmvif->rekey_data.kck_len = data->kck_len;
86 memcpy(mvmvif->rekey_data.kek, data->kek, data->kek_len);
87 memcpy(mvmvif->rekey_data.kck, data->kck, data->kck_len);
88 mvmvif->rekey_data.akm = data->akm & 0xFF;
89 mvmvif->rekey_data.replay_ctr =
90 cpu_to_le64(be64_to_cpup((__be64 *)data->replay_ctr));
91 mvmvif->rekey_data.valid = true;
92
93 mutex_unlock(&mvm->mutex);
94 }
95
96 #if IS_ENABLED(CONFIG_IPV6)
iwl_mvm_ipv6_addr_change(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct inet6_dev *idev)97 void iwl_mvm_ipv6_addr_change(struct ieee80211_hw *hw,
98 struct ieee80211_vif *vif,
99 struct inet6_dev *idev)
100 {
101 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
102 struct inet6_ifaddr *ifa;
103 int idx = 0;
104
105 memset(mvmvif->tentative_addrs, 0, sizeof(mvmvif->tentative_addrs));
106
107 read_lock_bh(&idev->lock);
108 list_for_each_entry(ifa, &idev->addr_list, if_list) {
109 mvmvif->target_ipv6_addrs[idx] = ifa->addr;
110 if (ifa->flags & IFA_F_TENTATIVE)
111 __set_bit(idx, mvmvif->tentative_addrs);
112 idx++;
113 if (idx >= IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_MAX)
114 break;
115 }
116 read_unlock_bh(&idev->lock);
117
118 mvmvif->num_target_ipv6_addrs = idx;
119 }
120 #endif
121
iwl_mvm_set_default_unicast_key(struct ieee80211_hw *hw, struct ieee80211_vif *vif, int idx)122 void iwl_mvm_set_default_unicast_key(struct ieee80211_hw *hw,
123 struct ieee80211_vif *vif, int idx)
124 {
125 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
126
127 mvmvif->tx_key_idx = idx;
128 }
129
iwl_mvm_convert_p1k(u16 *p1k, __le16 *out)130 static void iwl_mvm_convert_p1k(u16 *p1k, __le16 *out)
131 {
132 int i;
133
134 for (i = 0; i < IWL_P1K_SIZE; i++)
135 out[i] = cpu_to_le16(p1k[i]);
136 }
137
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)138 static const u8 *iwl_mvm_find_max_pn(struct ieee80211_key_conf *key,
139 struct iwl_mvm_key_pn *ptk_pn,
140 struct ieee80211_key_seq *seq,
141 int tid, int queues)
142 {
143 const u8 *ret = seq->ccmp.pn;
144 int i;
145
146 /* get the PN from mac80211, used on the default queue */
147 ieee80211_get_key_rx_seq(key, tid, seq);
148
149 /* and use the internal data for the other queues */
150 for (i = 1; i < queues; i++) {
151 const u8 *tmp = ptk_pn->q[i].pn[tid];
152
153 if (memcmp(ret, tmp, IEEE80211_CCMP_PN_LEN) <= 0)
154 ret = tmp;
155 }
156
157 return ret;
158 }
159
160 struct wowlan_key_data {
161 struct iwl_wowlan_rsc_tsc_params_cmd *rsc_tsc;
162 struct iwl_wowlan_tkip_params_cmd *tkip;
163 struct iwl_wowlan_kek_kck_material_cmd_v3 *kek_kck_cmd;
164 bool error, use_rsc_tsc, use_tkip, configure_keys;
165 int wep_key_idx;
166 };
167
iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_sta *sta, struct ieee80211_key_conf *key, void *_data)168 static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw,
169 struct ieee80211_vif *vif,
170 struct ieee80211_sta *sta,
171 struct ieee80211_key_conf *key,
172 void *_data)
173 {
174 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
175 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
176 struct wowlan_key_data *data = _data;
177 struct aes_sc *aes_sc, *aes_tx_sc = NULL;
178 struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
179 struct iwl_p1k_cache *rx_p1ks;
180 u8 *rx_mic_key;
181 struct ieee80211_key_seq seq;
182 u32 cur_rx_iv32 = 0;
183 u16 p1k[IWL_P1K_SIZE];
184 int ret, i;
185
186 switch (key->cipher) {
187 case WLAN_CIPHER_SUITE_WEP40:
188 case WLAN_CIPHER_SUITE_WEP104: { /* hack it for now */
189 struct {
190 struct iwl_mvm_wep_key_cmd wep_key_cmd;
191 struct iwl_mvm_wep_key wep_key;
192 } __packed wkc = {
193 .wep_key_cmd.mac_id_n_color =
194 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
195 mvmvif->color)),
196 .wep_key_cmd.num_keys = 1,
197 /* firmware sets STA_KEY_FLG_WEP_13BYTES */
198 .wep_key_cmd.decryption_type = STA_KEY_FLG_WEP,
199 .wep_key.key_index = key->keyidx,
200 .wep_key.key_size = key->keylen,
201 };
202
203 /*
204 * This will fail -- the key functions don't set support
205 * pairwise WEP keys. However, that's better than silently
206 * failing WoWLAN. Or maybe not?
207 */
208 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
209 break;
210
211 memcpy(&wkc.wep_key.key[3], key->key, key->keylen);
212 if (key->keyidx == mvmvif->tx_key_idx) {
213 /* TX key must be at offset 0 */
214 wkc.wep_key.key_offset = 0;
215 } else {
216 /* others start at 1 */
217 data->wep_key_idx++;
218 wkc.wep_key.key_offset = data->wep_key_idx;
219 }
220
221 if (data->configure_keys) {
222 mutex_lock(&mvm->mutex);
223 ret = iwl_mvm_send_cmd_pdu(mvm, WEP_KEY, 0,
224 sizeof(wkc), &wkc);
225 data->error = ret != 0;
226
227 mvm->ptk_ivlen = key->iv_len;
228 mvm->ptk_icvlen = key->icv_len;
229 mvm->gtk_ivlen = key->iv_len;
230 mvm->gtk_icvlen = key->icv_len;
231 mutex_unlock(&mvm->mutex);
232 }
233
234 /* don't upload key again */
235 return;
236 }
237 default:
238 data->error = true;
239 return;
240 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
241 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
242 data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_GCMP);
243 return;
244 case WLAN_CIPHER_SUITE_AES_CMAC:
245 data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_CCM);
246 /*
247 * Ignore CMAC keys -- the WoWLAN firmware doesn't support them
248 * but we also shouldn't abort suspend due to that. It does have
249 * support for the IGTK key renewal, but doesn't really use the
250 * IGTK for anything. This means we could spuriously wake up or
251 * be deauthenticated, but that was considered acceptable.
252 */
253 return;
254 case WLAN_CIPHER_SUITE_TKIP:
255 if (sta) {
256 u64 pn64;
257
258 tkip_sc =
259 data->rsc_tsc->params.all_tsc_rsc.tkip.unicast_rsc;
260 tkip_tx_sc =
261 &data->rsc_tsc->params.all_tsc_rsc.tkip.tsc;
262
263 rx_p1ks = data->tkip->rx_uni;
264
265 pn64 = atomic64_read(&key->tx_pn);
266 tkip_tx_sc->iv16 = cpu_to_le16(TKIP_PN_TO_IV16(pn64));
267 tkip_tx_sc->iv32 = cpu_to_le32(TKIP_PN_TO_IV32(pn64));
268
269 ieee80211_get_tkip_p1k_iv(key, TKIP_PN_TO_IV32(pn64),
270 p1k);
271 iwl_mvm_convert_p1k(p1k, data->tkip->tx.p1k);
272
273 memcpy(data->tkip->mic_keys.tx,
274 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
275 IWL_MIC_KEY_SIZE);
276
277 rx_mic_key = data->tkip->mic_keys.rx_unicast;
278 } else {
279 tkip_sc =
280 data->rsc_tsc->params.all_tsc_rsc.tkip.multicast_rsc;
281 rx_p1ks = data->tkip->rx_multi;
282 rx_mic_key = data->tkip->mic_keys.rx_mcast;
283 data->kek_kck_cmd->gtk_cipher =
284 cpu_to_le32(STA_KEY_FLG_TKIP);
285 }
286
287 /*
288 * For non-QoS this relies on the fact that both the uCode and
289 * mac80211 use TID 0 (as they need to to avoid replay attacks)
290 * for checking the IV in the frames.
291 */
292 for (i = 0; i < IWL_NUM_RSC; i++) {
293 ieee80211_get_key_rx_seq(key, i, &seq);
294 tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
295 tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
296 /* wrapping isn't allowed, AP must rekey */
297 if (seq.tkip.iv32 > cur_rx_iv32)
298 cur_rx_iv32 = seq.tkip.iv32;
299 }
300
301 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
302 cur_rx_iv32, p1k);
303 iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k);
304 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
305 cur_rx_iv32 + 1, p1k);
306 iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k);
307
308 memcpy(rx_mic_key,
309 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
310 IWL_MIC_KEY_SIZE);
311
312 data->use_tkip = true;
313 data->use_rsc_tsc = true;
314 break;
315 case WLAN_CIPHER_SUITE_CCMP:
316 case WLAN_CIPHER_SUITE_GCMP:
317 case WLAN_CIPHER_SUITE_GCMP_256:
318 if (sta) {
319 u64 pn64;
320
321 aes_sc =
322 data->rsc_tsc->params.all_tsc_rsc.aes.unicast_rsc;
323 aes_tx_sc =
324 &data->rsc_tsc->params.all_tsc_rsc.aes.tsc;
325
326 pn64 = atomic64_read(&key->tx_pn);
327 aes_tx_sc->pn = cpu_to_le64(pn64);
328 } else {
329 aes_sc =
330 data->rsc_tsc->params.all_tsc_rsc.aes.multicast_rsc;
331 data->kek_kck_cmd->gtk_cipher =
332 key->cipher == WLAN_CIPHER_SUITE_CCMP ?
333 cpu_to_le32(STA_KEY_FLG_CCM) :
334 cpu_to_le32(STA_KEY_FLG_GCMP);
335 }
336
337 /*
338 * For non-QoS this relies on the fact that both the uCode and
339 * mac80211/our RX code use TID 0 for checking the PN.
340 */
341 if (sta && iwl_mvm_has_new_rx_api(mvm)) {
342 struct iwl_mvm_sta *mvmsta;
343 struct iwl_mvm_key_pn *ptk_pn;
344 const u8 *pn;
345
346 mvmsta = iwl_mvm_sta_from_mac80211(sta);
347 rcu_read_lock();
348 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]);
349 if (WARN_ON(!ptk_pn)) {
350 rcu_read_unlock();
351 break;
352 }
353
354 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
355 pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i,
356 mvm->trans->num_rx_queues);
357 aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
358 ((u64)pn[4] << 8) |
359 ((u64)pn[3] << 16) |
360 ((u64)pn[2] << 24) |
361 ((u64)pn[1] << 32) |
362 ((u64)pn[0] << 40));
363 }
364
365 rcu_read_unlock();
366 } else {
367 for (i = 0; i < IWL_NUM_RSC; i++) {
368 u8 *pn = seq.ccmp.pn;
369
370 ieee80211_get_key_rx_seq(key, i, &seq);
371 aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
372 ((u64)pn[4] << 8) |
373 ((u64)pn[3] << 16) |
374 ((u64)pn[2] << 24) |
375 ((u64)pn[1] << 32) |
376 ((u64)pn[0] << 40));
377 }
378 }
379 data->use_rsc_tsc = true;
380 break;
381 }
382
383 IWL_DEBUG_WOWLAN(mvm, "GTK cipher %d\n", data->kek_kck_cmd->gtk_cipher);
384
385 if (data->configure_keys) {
386 mutex_lock(&mvm->mutex);
387 /*
388 * The D3 firmware hardcodes the key offset 0 as the key it
389 * uses to transmit packets to the AP, i.e. the PTK.
390 */
391 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
392 mvm->ptk_ivlen = key->iv_len;
393 mvm->ptk_icvlen = key->icv_len;
394 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 0);
395 } else {
396 /*
397 * firmware only supports TSC/RSC for a single key,
398 * so if there are multiple keep overwriting them
399 * with new ones -- this relies on mac80211 doing
400 * list_add_tail().
401 */
402 mvm->gtk_ivlen = key->iv_len;
403 mvm->gtk_icvlen = key->icv_len;
404 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 1);
405 }
406 mutex_unlock(&mvm->mutex);
407 data->error = ret != 0;
408 }
409 }
410
iwl_mvm_send_patterns_v1(struct iwl_mvm *mvm, struct cfg80211_wowlan *wowlan)411 static int iwl_mvm_send_patterns_v1(struct iwl_mvm *mvm,
412 struct cfg80211_wowlan *wowlan)
413 {
414 struct iwl_wowlan_patterns_cmd_v1 *pattern_cmd;
415 struct iwl_host_cmd cmd = {
416 .id = WOWLAN_PATTERNS,
417 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
418 };
419 int i, err;
420
421 if (!wowlan->n_patterns)
422 return 0;
423
424 cmd.len[0] = struct_size(pattern_cmd, patterns, wowlan->n_patterns);
425
426 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
427 if (!pattern_cmd)
428 return -ENOMEM;
429
430 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
431
432 for (i = 0; i < wowlan->n_patterns; i++) {
433 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
434
435 memcpy(&pattern_cmd->patterns[i].mask,
436 wowlan->patterns[i].mask, mask_len);
437 memcpy(&pattern_cmd->patterns[i].pattern,
438 wowlan->patterns[i].pattern,
439 wowlan->patterns[i].pattern_len);
440 pattern_cmd->patterns[i].mask_size = mask_len;
441 pattern_cmd->patterns[i].pattern_size =
442 wowlan->patterns[i].pattern_len;
443 }
444
445 cmd.data[0] = pattern_cmd;
446 err = iwl_mvm_send_cmd(mvm, &cmd);
447 kfree(pattern_cmd);
448 return err;
449 }
450
iwl_mvm_send_patterns(struct iwl_mvm *mvm, struct cfg80211_wowlan *wowlan)451 static int iwl_mvm_send_patterns(struct iwl_mvm *mvm,
452 struct cfg80211_wowlan *wowlan)
453 {
454 struct iwl_wowlan_patterns_cmd *pattern_cmd;
455 struct iwl_host_cmd cmd = {
456 .id = WOWLAN_PATTERNS,
457 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
458 };
459 int i, err;
460
461 if (!wowlan->n_patterns)
462 return 0;
463
464 cmd.len[0] = sizeof(*pattern_cmd) +
465 wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern_v2);
466
467 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
468 if (!pattern_cmd)
469 return -ENOMEM;
470
471 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
472
473 for (i = 0; i < wowlan->n_patterns; i++) {
474 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
475
476 pattern_cmd->patterns[i].pattern_type =
477 WOWLAN_PATTERN_TYPE_BITMASK;
478
479 memcpy(&pattern_cmd->patterns[i].u.bitmask.mask,
480 wowlan->patterns[i].mask, mask_len);
481 memcpy(&pattern_cmd->patterns[i].u.bitmask.pattern,
482 wowlan->patterns[i].pattern,
483 wowlan->patterns[i].pattern_len);
484 pattern_cmd->patterns[i].u.bitmask.mask_size = mask_len;
485 pattern_cmd->patterns[i].u.bitmask.pattern_size =
486 wowlan->patterns[i].pattern_len;
487 }
488
489 cmd.data[0] = pattern_cmd;
490 err = iwl_mvm_send_cmd(mvm, &cmd);
491 kfree(pattern_cmd);
492 return err;
493 }
494
iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif, struct ieee80211_sta *ap_sta)495 static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
496 struct ieee80211_sta *ap_sta)
497 {
498 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
499 struct ieee80211_chanctx_conf *ctx;
500 u8 chains_static, chains_dynamic;
501 struct cfg80211_chan_def chandef;
502 int ret, i;
503 struct iwl_binding_cmd_v1 binding_cmd = {};
504 struct iwl_time_quota_cmd quota_cmd = {};
505 struct iwl_time_quota_data *quota;
506 u32 status;
507
508 if (WARN_ON_ONCE(iwl_mvm_is_cdb_supported(mvm)))
509 return -EINVAL;
510
511 /* add back the PHY */
512 if (WARN_ON(!mvmvif->phy_ctxt))
513 return -EINVAL;
514
515 rcu_read_lock();
516 ctx = rcu_dereference(vif->chanctx_conf);
517 if (WARN_ON(!ctx)) {
518 rcu_read_unlock();
519 return -EINVAL;
520 }
521 chandef = ctx->def;
522 chains_static = ctx->rx_chains_static;
523 chains_dynamic = ctx->rx_chains_dynamic;
524 rcu_read_unlock();
525
526 ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt, &chandef,
527 chains_static, chains_dynamic);
528 if (ret)
529 return ret;
530
531 /* add back the MAC */
532 mvmvif->uploaded = false;
533
534 if (WARN_ON(!vif->bss_conf.assoc))
535 return -EINVAL;
536
537 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
538 if (ret)
539 return ret;
540
541 /* add back binding - XXX refactor? */
542 binding_cmd.id_and_color =
543 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
544 mvmvif->phy_ctxt->color));
545 binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD);
546 binding_cmd.phy =
547 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
548 mvmvif->phy_ctxt->color));
549 binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
550 mvmvif->color));
551 for (i = 1; i < MAX_MACS_IN_BINDING; i++)
552 binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID);
553
554 status = 0;
555 ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD,
556 IWL_BINDING_CMD_SIZE_V1, &binding_cmd,
557 &status);
558 if (ret) {
559 IWL_ERR(mvm, "Failed to add binding: %d\n", ret);
560 return ret;
561 }
562
563 if (status) {
564 IWL_ERR(mvm, "Binding command failed: %u\n", status);
565 return -EIO;
566 }
567
568 ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false, 0);
569 if (ret)
570 return ret;
571 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], ap_sta);
572
573 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
574 if (ret)
575 return ret;
576
577 /* and some quota */
578 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, 0);
579 quota->id_and_color =
580 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
581 mvmvif->phy_ctxt->color));
582 quota->quota = cpu_to_le32(IWL_MVM_MAX_QUOTA);
583 quota->max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA);
584
585 for (i = 1; i < MAX_BINDINGS; i++) {
586 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, i);
587 quota->id_and_color = cpu_to_le32(FW_CTXT_INVALID);
588 }
589
590 ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0,
591 iwl_mvm_quota_cmd_size(mvm), "a_cmd);
592 if (ret)
593 IWL_ERR(mvm, "Failed to send quota: %d\n", ret);
594
595 if (iwl_mvm_is_lar_supported(mvm) && iwl_mvm_init_fw_regd(mvm))
596 IWL_ERR(mvm, "Failed to initialize D3 LAR information\n");
597
598 return 0;
599 }
600
iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif)601 static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm,
602 struct ieee80211_vif *vif)
603 {
604 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
605 struct iwl_nonqos_seq_query_cmd query_cmd = {
606 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET),
607 .mac_id_n_color =
608 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
609 mvmvif->color)),
610 };
611 struct iwl_host_cmd cmd = {
612 .id = NON_QOS_TX_COUNTER_CMD,
613 .flags = CMD_WANT_SKB,
614 };
615 int err;
616 u32 size;
617
618 cmd.data[0] = &query_cmd;
619 cmd.len[0] = sizeof(query_cmd);
620
621 err = iwl_mvm_send_cmd(mvm, &cmd);
622 if (err)
623 return err;
624
625 size = iwl_rx_packet_payload_len(cmd.resp_pkt);
626 if (size < sizeof(__le16)) {
627 err = -EINVAL;
628 } else {
629 err = le16_to_cpup((__le16 *)cmd.resp_pkt->data);
630 /* firmware returns next, not last-used seqno */
631 err = (u16) (err - 0x10);
632 }
633
634 iwl_free_resp(&cmd);
635 return err;
636 }
637
iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif)638 void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
639 {
640 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
641 struct iwl_nonqos_seq_query_cmd query_cmd = {
642 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET),
643 .mac_id_n_color =
644 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
645 mvmvif->color)),
646 .value = cpu_to_le16(mvmvif->seqno),
647 };
648
649 /* return if called during restart, not resume from D3 */
650 if (!mvmvif->seqno_valid)
651 return;
652
653 mvmvif->seqno_valid = false;
654
655 if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0,
656 sizeof(query_cmd), &query_cmd))
657 IWL_ERR(mvm, "failed to set non-QoS seqno\n");
658 }
659
iwl_mvm_switch_to_d3(struct iwl_mvm *mvm)660 static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm)
661 {
662 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
663
664 iwl_mvm_stop_device(mvm);
665 /*
666 * Set the HW restart bit -- this is mostly true as we're
667 * going to load new firmware and reprogram that, though
668 * the reprogramming is going to be manual to avoid adding
669 * all the MACs that aren't support.
670 * We don't have to clear up everything though because the
671 * reprogramming is manual. When we resume, we'll actually
672 * go through a proper restart sequence again to switch
673 * back to the runtime firmware image.
674 */
675 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
676
677 /* the fw is reset, so all the keys are cleared */
678 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
679
680 mvm->ptk_ivlen = 0;
681 mvm->ptk_icvlen = 0;
682 mvm->ptk_ivlen = 0;
683 mvm->ptk_icvlen = 0;
684
685 return iwl_mvm_load_d3_fw(mvm);
686 }
687
688 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)689 iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm,
690 struct cfg80211_wowlan *wowlan,
691 struct iwl_wowlan_config_cmd *wowlan_config_cmd,
692 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
693 struct ieee80211_sta *ap_sta)
694 {
695 int ret;
696 struct iwl_mvm_sta *mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
697
698 /* TODO: wowlan_config_cmd->wowlan_ba_teardown_tids */
699
700 wowlan_config_cmd->is_11n_connection =
701 ap_sta->ht_cap.ht_supported;
702 wowlan_config_cmd->flags = ENABLE_L3_FILTERING |
703 ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING;
704
705 /* Query the last used seqno and set it */
706 ret = iwl_mvm_get_last_nonqos_seq(mvm, vif);
707 if (ret < 0)
708 return ret;
709
710 wowlan_config_cmd->non_qos_seq = cpu_to_le16(ret);
711
712 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, wowlan_config_cmd);
713
714 if (wowlan->disconnect)
715 wowlan_config_cmd->wakeup_filter |=
716 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
717 IWL_WOWLAN_WAKEUP_LINK_CHANGE);
718 if (wowlan->magic_pkt)
719 wowlan_config_cmd->wakeup_filter |=
720 cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET);
721 if (wowlan->gtk_rekey_failure)
722 wowlan_config_cmd->wakeup_filter |=
723 cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
724 if (wowlan->eap_identity_req)
725 wowlan_config_cmd->wakeup_filter |=
726 cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ);
727 if (wowlan->four_way_handshake)
728 wowlan_config_cmd->wakeup_filter |=
729 cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
730 if (wowlan->n_patterns)
731 wowlan_config_cmd->wakeup_filter |=
732 cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH);
733
734 if (wowlan->rfkill_release)
735 wowlan_config_cmd->wakeup_filter |=
736 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
737
738 if (wowlan->tcp) {
739 /*
740 * Set the "link change" (really "link lost") flag as well
741 * since that implies losing the TCP connection.
742 */
743 wowlan_config_cmd->wakeup_filter |=
744 cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS |
745 IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE |
746 IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET |
747 IWL_WOWLAN_WAKEUP_LINK_CHANGE);
748 }
749
750 if (wowlan->any) {
751 wowlan_config_cmd->wakeup_filter |=
752 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
753 IWL_WOWLAN_WAKEUP_LINK_CHANGE |
754 IWL_WOWLAN_WAKEUP_RX_FRAME |
755 IWL_WOWLAN_WAKEUP_BCN_FILTERING);
756 }
757
758 return 0;
759 }
760
iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm, struct ieee80211_vif *vif, u32 cmd_flags)761 static int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm,
762 struct ieee80211_vif *vif,
763 u32 cmd_flags)
764 {
765 struct iwl_wowlan_kek_kck_material_cmd_v3 kek_kck_cmd = {};
766 struct iwl_wowlan_tkip_params_cmd tkip_cmd = {};
767 bool unified = fw_has_capa(&mvm->fw->ucode_capa,
768 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
769 struct wowlan_key_data key_data = {
770 .configure_keys = !unified,
771 .use_rsc_tsc = false,
772 .tkip = &tkip_cmd,
773 .use_tkip = false,
774 .kek_kck_cmd = &kek_kck_cmd,
775 };
776 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
777 int ret;
778 u8 cmd_ver;
779 size_t cmd_size;
780
781 key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
782 if (!key_data.rsc_tsc)
783 return -ENOMEM;
784
785 /*
786 * if we have to configure keys, call ieee80211_iter_keys(),
787 * as we need non-atomic context in order to take the
788 * required locks.
789 */
790 /*
791 * Note that currently we don't propagate cmd_flags
792 * to the iterator. In case of key_data.configure_keys,
793 * all the configured commands are SYNC, and
794 * iwl_mvm_wowlan_program_keys() will take care of
795 * locking/unlocking mvm->mutex.
796 */
797 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_program_keys,
798 &key_data);
799
800 if (key_data.error) {
801 ret = -EIO;
802 goto out;
803 }
804
805 if (key_data.use_rsc_tsc) {
806 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP,
807 WOWLAN_TSC_RSC_PARAM,
808 IWL_FW_CMD_VER_UNKNOWN);
809 int size;
810
811 if (ver == 4) {
812 size = sizeof(*key_data.rsc_tsc);
813 key_data.rsc_tsc->sta_id =
814 cpu_to_le32(mvmvif->ap_sta_id);
815
816 } else if (ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN) {
817 size = sizeof(key_data.rsc_tsc->params);
818 } else {
819 ret = 0;
820 WARN_ON_ONCE(1);
821 goto out;
822 }
823
824 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM,
825 cmd_flags,
826 size,
827 key_data.rsc_tsc);
828
829 if (ret)
830 goto out;
831 }
832
833 if (key_data.use_tkip &&
834 !fw_has_api(&mvm->fw->ucode_capa,
835 IWL_UCODE_TLV_API_TKIP_MIC_KEYS)) {
836 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP,
837 WOWLAN_TKIP_PARAM,
838 IWL_FW_CMD_VER_UNKNOWN);
839 int size;
840
841 if (ver == 2) {
842 size = sizeof(tkip_cmd);
843 key_data.tkip->sta_id =
844 cpu_to_le32(mvmvif->ap_sta_id);
845 } else if (ver == 1 || ver == IWL_FW_CMD_VER_UNKNOWN) {
846 size = sizeof(struct iwl_wowlan_tkip_params_cmd_ver_1);
847 } else {
848 ret = -EINVAL;
849 WARN_ON_ONCE(1);
850 goto out;
851 }
852
853 /* send relevant data according to CMD version */
854 ret = iwl_mvm_send_cmd_pdu(mvm,
855 WOWLAN_TKIP_PARAM,
856 cmd_flags, size,
857 &tkip_cmd);
858 if (ret)
859 goto out;
860 }
861
862 /* configure rekey data only if offloaded rekey is supported (d3) */
863 if (mvmvif->rekey_data.valid) {
864 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,
865 IWL_ALWAYS_LONG_GROUP,
866 WOWLAN_KEK_KCK_MATERIAL,
867 IWL_FW_CMD_VER_UNKNOWN);
868 if (WARN_ON(cmd_ver != 2 && cmd_ver != 3 &&
869 cmd_ver != IWL_FW_CMD_VER_UNKNOWN))
870 return -EINVAL;
871 if (cmd_ver == 3)
872 cmd_size = sizeof(struct iwl_wowlan_kek_kck_material_cmd_v3);
873 else
874 cmd_size = sizeof(struct iwl_wowlan_kek_kck_material_cmd_v2);
875
876 memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck,
877 mvmvif->rekey_data.kck_len);
878 kek_kck_cmd.kck_len = cpu_to_le16(mvmvif->rekey_data.kck_len);
879 memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek,
880 mvmvif->rekey_data.kek_len);
881 kek_kck_cmd.kek_len = cpu_to_le16(mvmvif->rekey_data.kek_len);
882 kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr;
883 kek_kck_cmd.akm = cpu_to_le32(mvmvif->rekey_data.akm);
884
885 IWL_DEBUG_WOWLAN(mvm, "setting akm %d\n",
886 mvmvif->rekey_data.akm);
887
888 ret = iwl_mvm_send_cmd_pdu(mvm,
889 WOWLAN_KEK_KCK_MATERIAL, cmd_flags,
890 cmd_size,
891 &kek_kck_cmd);
892 if (ret)
893 goto out;
894 }
895 ret = 0;
896 out:
897 kfree(key_data.rsc_tsc);
898 return ret;
899 }
900
901 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)902 iwl_mvm_wowlan_config(struct iwl_mvm *mvm,
903 struct cfg80211_wowlan *wowlan,
904 struct iwl_wowlan_config_cmd *wowlan_config_cmd,
905 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
906 struct ieee80211_sta *ap_sta)
907 {
908 int ret;
909 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
910 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
911
912 mvm->offload_tid = wowlan_config_cmd->offloading_tid;
913
914 if (!unified_image) {
915 ret = iwl_mvm_switch_to_d3(mvm);
916 if (ret)
917 return ret;
918
919 ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta);
920 if (ret)
921 return ret;
922 }
923
924 /*
925 * This needs to be unlocked due to lock ordering
926 * constraints. Since we're in the suspend path
927 * that isn't really a problem though.
928 */
929 mutex_unlock(&mvm->mutex);
930 ret = iwl_mvm_wowlan_config_key_params(mvm, vif, CMD_ASYNC);
931 mutex_lock(&mvm->mutex);
932 if (ret)
933 return ret;
934
935 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0,
936 sizeof(*wowlan_config_cmd),
937 wowlan_config_cmd);
938 if (ret)
939 return ret;
940
941 if (fw_has_api(&mvm->fw->ucode_capa,
942 IWL_UCODE_TLV_API_WOWLAN_TCP_SYN_WAKE))
943 ret = iwl_mvm_send_patterns(mvm, wowlan);
944 else
945 ret = iwl_mvm_send_patterns_v1(mvm, wowlan);
946 if (ret)
947 return ret;
948
949 return iwl_mvm_send_proto_offload(mvm, vif, false, true, 0);
950 }
951
952 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)953 iwl_mvm_netdetect_config(struct iwl_mvm *mvm,
954 struct cfg80211_wowlan *wowlan,
955 struct cfg80211_sched_scan_request *nd_config,
956 struct ieee80211_vif *vif)
957 {
958 struct iwl_wowlan_config_cmd wowlan_config_cmd = {};
959 int ret;
960 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
961 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
962
963 if (!unified_image) {
964 ret = iwl_mvm_switch_to_d3(mvm);
965 if (ret)
966 return ret;
967 } else {
968 /* In theory, we wouldn't have to stop a running sched
969 * scan in order to start another one (for
970 * net-detect). But in practice this doesn't seem to
971 * work properly, so stop any running sched_scan now.
972 */
973 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
974 if (ret)
975 return ret;
976 }
977
978 /* rfkill release can be either for wowlan or netdetect */
979 if (wowlan->rfkill_release)
980 wowlan_config_cmd.wakeup_filter |=
981 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
982
983 wowlan_config_cmd.sta_id = mvm->aux_sta.sta_id;
984
985 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0,
986 sizeof(wowlan_config_cmd),
987 &wowlan_config_cmd);
988 if (ret)
989 return ret;
990
991 ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies,
992 IWL_MVM_SCAN_NETDETECT);
993 if (ret)
994 return ret;
995
996 if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels))
997 return -EBUSY;
998
999 /* save the sched scan matchsets... */
1000 if (nd_config->n_match_sets) {
1001 mvm->nd_match_sets = kmemdup(nd_config->match_sets,
1002 sizeof(*nd_config->match_sets) *
1003 nd_config->n_match_sets,
1004 GFP_KERNEL);
1005 if (mvm->nd_match_sets)
1006 mvm->n_nd_match_sets = nd_config->n_match_sets;
1007 }
1008
1009 /* ...and the sched scan channels for later reporting */
1010 mvm->nd_channels = kmemdup(nd_config->channels,
1011 sizeof(*nd_config->channels) *
1012 nd_config->n_channels,
1013 GFP_KERNEL);
1014 if (mvm->nd_channels)
1015 mvm->n_nd_channels = nd_config->n_channels;
1016
1017 return 0;
1018 }
1019
iwl_mvm_free_nd(struct iwl_mvm *mvm)1020 static void iwl_mvm_free_nd(struct iwl_mvm *mvm)
1021 {
1022 kfree(mvm->nd_match_sets);
1023 mvm->nd_match_sets = NULL;
1024 mvm->n_nd_match_sets = 0;
1025 kfree(mvm->nd_channels);
1026 mvm->nd_channels = NULL;
1027 mvm->n_nd_channels = 0;
1028 }
1029
__iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan, bool test)1030 static int __iwl_mvm_suspend(struct ieee80211_hw *hw,
1031 struct cfg80211_wowlan *wowlan,
1032 bool test)
1033 {
1034 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1035 struct ieee80211_vif *vif = NULL;
1036 struct iwl_mvm_vif *mvmvif = NULL;
1037 struct ieee80211_sta *ap_sta = NULL;
1038 struct iwl_d3_manager_config d3_cfg_cmd_data = {
1039 /*
1040 * Program the minimum sleep time to 10 seconds, as many
1041 * platforms have issues processing a wakeup signal while
1042 * still being in the process of suspending.
1043 */
1044 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000),
1045 };
1046 struct iwl_host_cmd d3_cfg_cmd = {
1047 .id = D3_CONFIG_CMD,
1048 .flags = CMD_WANT_SKB,
1049 .data[0] = &d3_cfg_cmd_data,
1050 .len[0] = sizeof(d3_cfg_cmd_data),
1051 };
1052 int ret;
1053 int len __maybe_unused;
1054 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1055 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1056
1057 if (!wowlan) {
1058 /*
1059 * mac80211 shouldn't get here, but for D3 test
1060 * it doesn't warrant a warning
1061 */
1062 WARN_ON(!test);
1063 return -EINVAL;
1064 }
1065
1066 mutex_lock(&mvm->mutex);
1067
1068 set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
1069
1070 vif = iwl_mvm_get_bss_vif(mvm);
1071 if (IS_ERR_OR_NULL(vif)) {
1072 ret = 1;
1073 goto out_noreset;
1074 }
1075
1076 mvmvif = iwl_mvm_vif_from_mac80211(vif);
1077
1078 if (mvmvif->ap_sta_id == IWL_MVM_INVALID_STA) {
1079 /* if we're not associated, this must be netdetect */
1080 if (!wowlan->nd_config) {
1081 ret = 1;
1082 goto out_noreset;
1083 }
1084
1085 ret = iwl_mvm_netdetect_config(
1086 mvm, wowlan, wowlan->nd_config, vif);
1087 if (ret)
1088 goto out;
1089
1090 mvm->net_detect = true;
1091 } else {
1092 struct iwl_wowlan_config_cmd wowlan_config_cmd = {
1093 .offloading_tid = 0,
1094 };
1095
1096 wowlan_config_cmd.sta_id = mvmvif->ap_sta_id;
1097
1098 ap_sta = rcu_dereference_protected(
1099 mvm->fw_id_to_mac_id[mvmvif->ap_sta_id],
1100 lockdep_is_held(&mvm->mutex));
1101 if (IS_ERR_OR_NULL(ap_sta)) {
1102 ret = -EINVAL;
1103 goto out_noreset;
1104 }
1105
1106 ret = iwl_mvm_sta_ensure_queue(
1107 mvm, ap_sta->txq[wowlan_config_cmd.offloading_tid]);
1108 if (ret)
1109 goto out_noreset;
1110
1111 ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1112 vif, mvmvif, ap_sta);
1113 if (ret)
1114 goto out_noreset;
1115 ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1116 vif, mvmvif, ap_sta);
1117 if (ret)
1118 goto out;
1119
1120 mvm->net_detect = false;
1121 }
1122
1123 ret = iwl_mvm_power_update_device(mvm);
1124 if (ret)
1125 goto out;
1126
1127 ret = iwl_mvm_power_update_mac(mvm);
1128 if (ret)
1129 goto out;
1130
1131 #ifdef CONFIG_IWLWIFI_DEBUGFS
1132 if (mvm->d3_wake_sysassert)
1133 d3_cfg_cmd_data.wakeup_flags |=
1134 cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR);
1135 #endif
1136
1137 /*
1138 * Prior to 9000 device family the driver needs to stop the dbg
1139 * recording before entering D3. In later devices the FW stops the
1140 * recording automatically.
1141 */
1142 if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_9000)
1143 iwl_fw_dbg_stop_restart_recording(&mvm->fwrt, NULL, true);
1144
1145 /* must be last -- this switches firmware state */
1146 ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd);
1147 if (ret)
1148 goto out;
1149 #ifdef CONFIG_IWLWIFI_DEBUGFS
1150 len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt);
1151 if (len >= sizeof(u32)) {
1152 mvm->d3_test_pme_ptr =
1153 le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data);
1154 }
1155 #endif
1156 iwl_free_resp(&d3_cfg_cmd);
1157
1158 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1159
1160 ret = iwl_trans_d3_suspend(mvm->trans, test, !unified_image);
1161 out:
1162 if (ret < 0) {
1163 iwl_mvm_free_nd(mvm);
1164
1165 if (!unified_image) {
1166 if (mvm->fw_restart > 0) {
1167 mvm->fw_restart--;
1168 ieee80211_restart_hw(mvm->hw);
1169 }
1170 }
1171
1172 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
1173 }
1174 out_noreset:
1175 mutex_unlock(&mvm->mutex);
1176
1177 return ret;
1178 }
1179
iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)1180 int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
1181 {
1182 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1183 struct iwl_trans *trans = mvm->trans;
1184 int ret;
1185
1186 iwl_mvm_pause_tcm(mvm, true);
1187
1188 iwl_fw_runtime_suspend(&mvm->fwrt);
1189
1190 ret = iwl_trans_suspend(trans);
1191 if (ret)
1192 return ret;
1193
1194 trans->system_pm_mode = IWL_PLAT_PM_MODE_D3;
1195
1196 return __iwl_mvm_suspend(hw, wowlan, false);
1197 }
1198
1199 /* converted data from the different status responses */
1200 struct iwl_wowlan_status_data {
1201 u16 pattern_number;
1202 u16 qos_seq_ctr[8];
1203 u32 wakeup_reasons;
1204 u32 wake_packet_length;
1205 u32 wake_packet_bufsize;
1206 const u8 *wake_packet;
1207 };
1208
iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm, struct ieee80211_vif *vif, struct iwl_wowlan_status_data *status)1209 static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm,
1210 struct ieee80211_vif *vif,
1211 struct iwl_wowlan_status_data *status)
1212 {
1213 struct sk_buff *pkt = NULL;
1214 struct cfg80211_wowlan_wakeup wakeup = {
1215 .pattern_idx = -1,
1216 };
1217 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
1218 u32 reasons = status->wakeup_reasons;
1219
1220 if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
1221 wakeup_report = NULL;
1222 goto report;
1223 }
1224
1225 pm_wakeup_event(mvm->dev, 0);
1226
1227 if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET)
1228 wakeup.magic_pkt = true;
1229
1230 if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN)
1231 wakeup.pattern_idx =
1232 status->pattern_number;
1233
1234 if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1235 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH))
1236 wakeup.disconnect = true;
1237
1238 if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)
1239 wakeup.gtk_rekey_failure = true;
1240
1241 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
1242 wakeup.rfkill_release = true;
1243
1244 if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST)
1245 wakeup.eap_identity_req = true;
1246
1247 if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE)
1248 wakeup.four_way_handshake = true;
1249
1250 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS)
1251 wakeup.tcp_connlost = true;
1252
1253 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE)
1254 wakeup.tcp_nomoretokens = true;
1255
1256 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET)
1257 wakeup.tcp_match = true;
1258
1259 if (status->wake_packet_bufsize) {
1260 int pktsize = status->wake_packet_bufsize;
1261 int pktlen = status->wake_packet_length;
1262 const u8 *pktdata = status->wake_packet;
1263 struct ieee80211_hdr *hdr = (void *)pktdata;
1264 int truncated = pktlen - pktsize;
1265
1266 /* this would be a firmware bug */
1267 if (WARN_ON_ONCE(truncated < 0))
1268 truncated = 0;
1269
1270 if (ieee80211_is_data(hdr->frame_control)) {
1271 int hdrlen = ieee80211_hdrlen(hdr->frame_control);
1272 int ivlen = 0, icvlen = 4; /* also FCS */
1273
1274 pkt = alloc_skb(pktsize, GFP_KERNEL);
1275 if (!pkt)
1276 goto report;
1277
1278 skb_put_data(pkt, pktdata, hdrlen);
1279 pktdata += hdrlen;
1280 pktsize -= hdrlen;
1281
1282 if (ieee80211_has_protected(hdr->frame_control)) {
1283 /*
1284 * This is unlocked and using gtk_i(c)vlen,
1285 * but since everything is under RTNL still
1286 * that's not really a problem - changing
1287 * it would be difficult.
1288 */
1289 if (is_multicast_ether_addr(hdr->addr1)) {
1290 ivlen = mvm->gtk_ivlen;
1291 icvlen += mvm->gtk_icvlen;
1292 } else {
1293 ivlen = mvm->ptk_ivlen;
1294 icvlen += mvm->ptk_icvlen;
1295 }
1296 }
1297
1298 /* if truncated, FCS/ICV is (partially) gone */
1299 if (truncated >= icvlen) {
1300 icvlen = 0;
1301 truncated -= icvlen;
1302 } else {
1303 icvlen -= truncated;
1304 truncated = 0;
1305 }
1306
1307 pktsize -= ivlen + icvlen;
1308 pktdata += ivlen;
1309
1310 skb_put_data(pkt, pktdata, pktsize);
1311
1312 if (ieee80211_data_to_8023(pkt, vif->addr, vif->type))
1313 goto report;
1314 wakeup.packet = pkt->data;
1315 wakeup.packet_present_len = pkt->len;
1316 wakeup.packet_len = pkt->len - truncated;
1317 wakeup.packet_80211 = false;
1318 } else {
1319 int fcslen = 4;
1320
1321 if (truncated >= 4) {
1322 truncated -= 4;
1323 fcslen = 0;
1324 } else {
1325 fcslen -= truncated;
1326 truncated = 0;
1327 }
1328 pktsize -= fcslen;
1329 wakeup.packet = status->wake_packet;
1330 wakeup.packet_present_len = pktsize;
1331 wakeup.packet_len = pktlen - truncated;
1332 wakeup.packet_80211 = true;
1333 }
1334 }
1335
1336 report:
1337 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
1338 kfree_skb(pkt);
1339 }
1340
iwl_mvm_aes_sc_to_seq(struct aes_sc *sc, struct ieee80211_key_seq *seq)1341 static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc,
1342 struct ieee80211_key_seq *seq)
1343 {
1344 u64 pn;
1345
1346 pn = le64_to_cpu(sc->pn);
1347 seq->ccmp.pn[0] = pn >> 40;
1348 seq->ccmp.pn[1] = pn >> 32;
1349 seq->ccmp.pn[2] = pn >> 24;
1350 seq->ccmp.pn[3] = pn >> 16;
1351 seq->ccmp.pn[4] = pn >> 8;
1352 seq->ccmp.pn[5] = pn;
1353 }
1354
iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc, struct ieee80211_key_seq *seq)1355 static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc,
1356 struct ieee80211_key_seq *seq)
1357 {
1358 seq->tkip.iv32 = le32_to_cpu(sc->iv32);
1359 seq->tkip.iv16 = le16_to_cpu(sc->iv16);
1360 }
1361
iwl_mvm_set_aes_rx_seq(struct iwl_mvm *mvm, struct aes_sc *scs, struct ieee80211_sta *sta, struct ieee80211_key_conf *key)1362 static void iwl_mvm_set_aes_rx_seq(struct iwl_mvm *mvm, struct aes_sc *scs,
1363 struct ieee80211_sta *sta,
1364 struct ieee80211_key_conf *key)
1365 {
1366 int tid;
1367
1368 BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS);
1369
1370 if (sta && iwl_mvm_has_new_rx_api(mvm)) {
1371 struct iwl_mvm_sta *mvmsta;
1372 struct iwl_mvm_key_pn *ptk_pn;
1373
1374 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1375
1376 rcu_read_lock();
1377 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]);
1378 if (WARN_ON(!ptk_pn)) {
1379 rcu_read_unlock();
1380 return;
1381 }
1382
1383 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1384 struct ieee80211_key_seq seq = {};
1385 int i;
1386
1387 iwl_mvm_aes_sc_to_seq(&scs[tid], &seq);
1388 ieee80211_set_key_rx_seq(key, tid, &seq);
1389 for (i = 1; i < mvm->trans->num_rx_queues; i++)
1390 memcpy(ptk_pn->q[i].pn[tid],
1391 seq.ccmp.pn, IEEE80211_CCMP_PN_LEN);
1392 }
1393 rcu_read_unlock();
1394 } else {
1395 for (tid = 0; tid < IWL_NUM_RSC; tid++) {
1396 struct ieee80211_key_seq seq = {};
1397
1398 iwl_mvm_aes_sc_to_seq(&scs[tid], &seq);
1399 ieee80211_set_key_rx_seq(key, tid, &seq);
1400 }
1401 }
1402 }
1403
iwl_mvm_set_tkip_rx_seq(struct tkip_sc *scs, struct ieee80211_key_conf *key)1404 static void iwl_mvm_set_tkip_rx_seq(struct tkip_sc *scs,
1405 struct ieee80211_key_conf *key)
1406 {
1407 int tid;
1408
1409 BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS);
1410
1411 for (tid = 0; tid < IWL_NUM_RSC; tid++) {
1412 struct ieee80211_key_seq seq = {};
1413
1414 iwl_mvm_tkip_sc_to_seq(&scs[tid], &seq);
1415 ieee80211_set_key_rx_seq(key, tid, &seq);
1416 }
1417 }
1418
iwl_mvm_set_key_rx_seq(struct iwl_mvm *mvm, struct ieee80211_key_conf *key, struct iwl_wowlan_status *status)1419 static void iwl_mvm_set_key_rx_seq(struct iwl_mvm *mvm,
1420 struct ieee80211_key_conf *key,
1421 struct iwl_wowlan_status *status)
1422 {
1423 union iwl_all_tsc_rsc *rsc = &status->gtk[0].rsc.all_tsc_rsc;
1424
1425 switch (key->cipher) {
1426 case WLAN_CIPHER_SUITE_CCMP:
1427 case WLAN_CIPHER_SUITE_GCMP:
1428 case WLAN_CIPHER_SUITE_GCMP_256:
1429 iwl_mvm_set_aes_rx_seq(mvm, rsc->aes.multicast_rsc, NULL, key);
1430 break;
1431 case WLAN_CIPHER_SUITE_TKIP:
1432 iwl_mvm_set_tkip_rx_seq(rsc->tkip.multicast_rsc, key);
1433 break;
1434 default:
1435 WARN_ON(1);
1436 }
1437 }
1438
1439 struct iwl_mvm_d3_gtk_iter_data {
1440 struct iwl_mvm *mvm;
1441 struct iwl_wowlan_status *status;
1442 void *last_gtk;
1443 u32 cipher;
1444 bool find_phase, unhandled_cipher;
1445 int num_keys;
1446 };
1447
iwl_mvm_d3_update_keys(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_sta *sta, struct ieee80211_key_conf *key, void *_data)1448 static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw,
1449 struct ieee80211_vif *vif,
1450 struct ieee80211_sta *sta,
1451 struct ieee80211_key_conf *key,
1452 void *_data)
1453 {
1454 struct iwl_mvm_d3_gtk_iter_data *data = _data;
1455
1456 if (data->unhandled_cipher)
1457 return;
1458
1459 switch (key->cipher) {
1460 case WLAN_CIPHER_SUITE_WEP40:
1461 case WLAN_CIPHER_SUITE_WEP104:
1462 /* ignore WEP completely, nothing to do */
1463 return;
1464 case WLAN_CIPHER_SUITE_CCMP:
1465 case WLAN_CIPHER_SUITE_GCMP:
1466 case WLAN_CIPHER_SUITE_GCMP_256:
1467 case WLAN_CIPHER_SUITE_TKIP:
1468 /* we support these */
1469 break;
1470 default:
1471 /* everything else (even CMAC for MFP) - disconnect from AP */
1472 data->unhandled_cipher = true;
1473 return;
1474 }
1475
1476 data->num_keys++;
1477
1478 /*
1479 * pairwise key - update sequence counters only;
1480 * note that this assumes no TDLS sessions are active
1481 */
1482 if (sta) {
1483 struct ieee80211_key_seq seq = {};
1484 union iwl_all_tsc_rsc *sc =
1485 &data->status->gtk[0].rsc.all_tsc_rsc;
1486
1487 if (data->find_phase)
1488 return;
1489
1490 switch (key->cipher) {
1491 case WLAN_CIPHER_SUITE_CCMP:
1492 case WLAN_CIPHER_SUITE_GCMP:
1493 case WLAN_CIPHER_SUITE_GCMP_256:
1494 iwl_mvm_set_aes_rx_seq(data->mvm, sc->aes.unicast_rsc,
1495 sta, key);
1496 atomic64_set(&key->tx_pn, le64_to_cpu(sc->aes.tsc.pn));
1497 break;
1498 case WLAN_CIPHER_SUITE_TKIP:
1499 iwl_mvm_tkip_sc_to_seq(&sc->tkip.tsc, &seq);
1500 iwl_mvm_set_tkip_rx_seq(sc->tkip.unicast_rsc, key);
1501 atomic64_set(&key->tx_pn,
1502 (u64)seq.tkip.iv16 |
1503 ((u64)seq.tkip.iv32 << 16));
1504 break;
1505 }
1506
1507 /* that's it for this key */
1508 return;
1509 }
1510
1511 if (data->find_phase) {
1512 data->last_gtk = key;
1513 data->cipher = key->cipher;
1514 return;
1515 }
1516
1517 if (data->status->num_of_gtk_rekeys)
1518 ieee80211_remove_key(key);
1519 else if (data->last_gtk == key)
1520 iwl_mvm_set_key_rx_seq(data->mvm, key, data->status);
1521 }
1522
iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm, struct ieee80211_vif *vif, struct iwl_wowlan_status *status)1523 static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm,
1524 struct ieee80211_vif *vif,
1525 struct iwl_wowlan_status *status)
1526 {
1527 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1528 struct iwl_mvm_d3_gtk_iter_data gtkdata = {
1529 .mvm = mvm,
1530 .status = status,
1531 };
1532 u32 disconnection_reasons =
1533 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1534 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH;
1535
1536 if (!status || !vif->bss_conf.bssid)
1537 return false;
1538
1539 if (le32_to_cpu(status->wakeup_reasons) & disconnection_reasons)
1540 return false;
1541
1542 /* find last GTK that we used initially, if any */
1543 gtkdata.find_phase = true;
1544 ieee80211_iter_keys(mvm->hw, vif,
1545 iwl_mvm_d3_update_keys, >kdata);
1546 /* not trying to keep connections with MFP/unhandled ciphers */
1547 if (gtkdata.unhandled_cipher)
1548 return false;
1549 if (!gtkdata.num_keys)
1550 goto out;
1551 if (!gtkdata.last_gtk)
1552 return false;
1553
1554 /*
1555 * invalidate all other GTKs that might still exist and update
1556 * the one that we used
1557 */
1558 gtkdata.find_phase = false;
1559 ieee80211_iter_keys(mvm->hw, vif,
1560 iwl_mvm_d3_update_keys, >kdata);
1561
1562 IWL_DEBUG_WOWLAN(mvm, "num of GTK rekeying %d\n",
1563 le32_to_cpu(status->num_of_gtk_rekeys));
1564 if (status->num_of_gtk_rekeys) {
1565 struct ieee80211_key_conf *key;
1566 struct {
1567 struct ieee80211_key_conf conf;
1568 u8 key[32];
1569 } conf = {
1570 .conf.cipher = gtkdata.cipher,
1571 .conf.keyidx =
1572 iwlmvm_wowlan_gtk_idx(&status->gtk[0]),
1573 };
1574 __be64 replay_ctr;
1575
1576 IWL_DEBUG_WOWLAN(mvm,
1577 "Received from FW GTK cipher %d, key index %d\n",
1578 conf.conf.cipher, conf.conf.keyidx);
1579 switch (gtkdata.cipher) {
1580 case WLAN_CIPHER_SUITE_CCMP:
1581 case WLAN_CIPHER_SUITE_GCMP:
1582 BUILD_BUG_ON(WLAN_KEY_LEN_CCMP != WLAN_KEY_LEN_GCMP);
1583 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_CCMP);
1584 conf.conf.keylen = WLAN_KEY_LEN_CCMP;
1585 memcpy(conf.conf.key, status->gtk[0].key,
1586 WLAN_KEY_LEN_CCMP);
1587 break;
1588 case WLAN_CIPHER_SUITE_GCMP_256:
1589 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_GCMP_256);
1590 conf.conf.keylen = WLAN_KEY_LEN_GCMP_256;
1591 memcpy(conf.conf.key, status->gtk[0].key,
1592 WLAN_KEY_LEN_GCMP_256);
1593 break;
1594 case WLAN_CIPHER_SUITE_TKIP:
1595 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_TKIP);
1596 conf.conf.keylen = WLAN_KEY_LEN_TKIP;
1597 memcpy(conf.conf.key, status->gtk[0].key, 16);
1598 /* leave TX MIC key zeroed, we don't use it anyway */
1599 memcpy(conf.conf.key +
1600 NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
1601 status->gtk[0].tkip_mic_key, 8);
1602 break;
1603 }
1604
1605 key = ieee80211_gtk_rekey_add(vif, &conf.conf);
1606 if (IS_ERR(key))
1607 return false;
1608 iwl_mvm_set_key_rx_seq(mvm, key, status);
1609
1610 replay_ctr =
1611 cpu_to_be64(le64_to_cpu(status->replay_ctr));
1612
1613 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid,
1614 (void *)&replay_ctr, GFP_KERNEL);
1615 }
1616
1617 out:
1618 mvmvif->seqno_valid = true;
1619 /* +0x10 because the set API expects next-to-use, not last-used */
1620 mvmvif->seqno = le16_to_cpu(status->non_qos_seq_ctr) + 0x10;
1621
1622 return true;
1623 }
1624
1625 /* Occasionally, templates would be nice. This is one of those times ... */
1626 #define iwl_mvm_parse_wowlan_status_common(_ver) \
1627 static struct iwl_wowlan_status * \
1628 iwl_mvm_parse_wowlan_status_common_ ## _ver(struct iwl_mvm *mvm, \
1629 void *_data, int len) \
1630 { \
1631 struct iwl_wowlan_status *status; \
1632 struct iwl_wowlan_status_ ##_ver *data = _data; \
1633 int data_size; \
1634 \
1635 if (len < sizeof(*data)) { \
1636 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \
1637 return ERR_PTR(-EIO); \
1638 } \
1639 \
1640 data_size = ALIGN(le32_to_cpu(data->wake_packet_bufsize), 4); \
1641 if (len != sizeof(*data) + data_size) { \
1642 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \
1643 return ERR_PTR(-EIO); \
1644 } \
1645 \
1646 status = kzalloc(sizeof(*status) + data_size, GFP_KERNEL); \
1647 if (!status) \
1648 return ERR_PTR(-ENOMEM); \
1649 \
1650 /* copy all the common fields */ \
1651 status->replay_ctr = data->replay_ctr; \
1652 status->pattern_number = data->pattern_number; \
1653 status->non_qos_seq_ctr = data->non_qos_seq_ctr; \
1654 memcpy(status->qos_seq_ctr, data->qos_seq_ctr, \
1655 sizeof(status->qos_seq_ctr)); \
1656 status->wakeup_reasons = data->wakeup_reasons; \
1657 status->num_of_gtk_rekeys = data->num_of_gtk_rekeys; \
1658 status->received_beacons = data->received_beacons; \
1659 status->wake_packet_length = data->wake_packet_length; \
1660 status->wake_packet_bufsize = data->wake_packet_bufsize; \
1661 memcpy(status->wake_packet, data->wake_packet, \
1662 le32_to_cpu(status->wake_packet_bufsize)); \
1663 \
1664 return status; \
1665 }
1666
iwl_mvm_parse_wowlan_status_commonnull1667 iwl_mvm_parse_wowlan_status_common(v6)
1668 iwl_mvm_parse_wowlan_status_common(v7)
1669 iwl_mvm_parse_wowlan_status_common(v9)
1670
1671 struct iwl_wowlan_status *iwl_mvm_send_wowlan_get_status(struct iwl_mvm *mvm)
1672 {
1673 struct iwl_wowlan_status *status;
1674 struct iwl_host_cmd cmd = {
1675 .id = WOWLAN_GET_STATUSES,
1676 .flags = CMD_WANT_SKB,
1677 };
1678 int ret, len;
1679 u8 notif_ver;
1680
1681 lockdep_assert_held(&mvm->mutex);
1682
1683 ret = iwl_mvm_send_cmd(mvm, &cmd);
1684 if (ret) {
1685 IWL_ERR(mvm, "failed to query wakeup status (%d)\n", ret);
1686 return ERR_PTR(ret);
1687 }
1688
1689 len = iwl_rx_packet_payload_len(cmd.resp_pkt);
1690
1691 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */
1692 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
1693 WOWLAN_GET_STATUSES, 7);
1694
1695 if (!fw_has_api(&mvm->fw->ucode_capa,
1696 IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL)) {
1697 struct iwl_wowlan_status_v6 *v6 = (void *)cmd.resp_pkt->data;
1698
1699 status = iwl_mvm_parse_wowlan_status_common_v6(mvm,
1700 cmd.resp_pkt->data,
1701 len);
1702 if (IS_ERR(status))
1703 goto out_free_resp;
1704
1705 BUILD_BUG_ON(sizeof(v6->gtk.decrypt_key) >
1706 sizeof(status->gtk[0].key));
1707 BUILD_BUG_ON(sizeof(v6->gtk.tkip_mic_key) >
1708 sizeof(status->gtk[0].tkip_mic_key));
1709
1710 /* copy GTK info to the right place */
1711 memcpy(status->gtk[0].key, v6->gtk.decrypt_key,
1712 sizeof(v6->gtk.decrypt_key));
1713 memcpy(status->gtk[0].tkip_mic_key, v6->gtk.tkip_mic_key,
1714 sizeof(v6->gtk.tkip_mic_key));
1715 memcpy(&status->gtk[0].rsc, &v6->gtk.rsc,
1716 sizeof(status->gtk[0].rsc));
1717
1718 /* hardcode the key length to 16 since v6 only supports 16 */
1719 status->gtk[0].key_len = 16;
1720
1721 /*
1722 * The key index only uses 2 bits (values 0 to 3) and
1723 * we always set bit 7 which means this is the
1724 * currently used key.
1725 */
1726 status->gtk[0].key_flags = v6->gtk.key_index | BIT(7);
1727 } else if (notif_ver == 7) {
1728 struct iwl_wowlan_status_v7 *v7 = (void *)cmd.resp_pkt->data;
1729
1730 status = iwl_mvm_parse_wowlan_status_common_v7(mvm,
1731 cmd.resp_pkt->data,
1732 len);
1733 if (IS_ERR(status))
1734 goto out_free_resp;
1735
1736 status->gtk[0] = v7->gtk[0];
1737 status->igtk[0] = v7->igtk[0];
1738 } else if (notif_ver == 9) {
1739 struct iwl_wowlan_status_v9 *v9 = (void *)cmd.resp_pkt->data;
1740
1741 status = iwl_mvm_parse_wowlan_status_common_v9(mvm,
1742 cmd.resp_pkt->data,
1743 len);
1744 if (IS_ERR(status))
1745 goto out_free_resp;
1746
1747 status->gtk[0] = v9->gtk[0];
1748 status->igtk[0] = v9->igtk[0];
1749
1750 status->tid_tear_down = v9->tid_tear_down;
1751 } else {
1752 IWL_ERR(mvm,
1753 "Firmware advertises unknown WoWLAN status response %d!\n",
1754 notif_ver);
1755 status = ERR_PTR(-EIO);
1756 }
1757
1758 out_free_resp:
1759 iwl_free_resp(&cmd);
1760 return status;
1761 }
1762
1763 static struct iwl_wowlan_status *
iwl_mvm_get_wakeup_status(struct iwl_mvm *mvm)1764 iwl_mvm_get_wakeup_status(struct iwl_mvm *mvm)
1765 {
1766 int ret;
1767
1768 /* only for tracing for now */
1769 ret = iwl_mvm_send_cmd_pdu(mvm, OFFLOADS_QUERY_CMD, 0, 0, NULL);
1770 if (ret)
1771 IWL_ERR(mvm, "failed to query offload statistics (%d)\n", ret);
1772
1773 return iwl_mvm_send_wowlan_get_status(mvm);
1774 }
1775
1776 /* releases the MVM mutex */
iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm, struct ieee80211_vif *vif)1777 static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm,
1778 struct ieee80211_vif *vif)
1779 {
1780 struct iwl_wowlan_status_data status;
1781 struct iwl_wowlan_status *fw_status;
1782 int i;
1783 bool keep;
1784 struct iwl_mvm_sta *mvm_ap_sta;
1785
1786 fw_status = iwl_mvm_get_wakeup_status(mvm);
1787 if (IS_ERR_OR_NULL(fw_status))
1788 goto out_unlock;
1789
1790 IWL_DEBUG_WOWLAN(mvm, "wakeup reason 0x%x\n",
1791 le32_to_cpu(fw_status->wakeup_reasons));
1792
1793 status.pattern_number = le16_to_cpu(fw_status->pattern_number);
1794 for (i = 0; i < 8; i++)
1795 status.qos_seq_ctr[i] =
1796 le16_to_cpu(fw_status->qos_seq_ctr[i]);
1797 status.wakeup_reasons = le32_to_cpu(fw_status->wakeup_reasons);
1798 status.wake_packet_length =
1799 le32_to_cpu(fw_status->wake_packet_length);
1800 status.wake_packet_bufsize =
1801 le32_to_cpu(fw_status->wake_packet_bufsize);
1802 status.wake_packet = fw_status->wake_packet;
1803
1804 /* still at hard-coded place 0 for D3 image */
1805 mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, 0);
1806 if (!mvm_ap_sta)
1807 goto out_free;
1808
1809 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1810 u16 seq = status.qos_seq_ctr[i];
1811 /* firmware stores last-used value, we store next value */
1812 seq += 0x10;
1813 mvm_ap_sta->tid_data[i].seq_number = seq;
1814 }
1815
1816 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000) {
1817 i = mvm->offload_tid;
1818 iwl_trans_set_q_ptrs(mvm->trans,
1819 mvm_ap_sta->tid_data[i].txq_id,
1820 mvm_ap_sta->tid_data[i].seq_number >> 4);
1821 }
1822
1823 /* now we have all the data we need, unlock to avoid mac80211 issues */
1824 mutex_unlock(&mvm->mutex);
1825
1826 iwl_mvm_report_wakeup_reasons(mvm, vif, &status);
1827
1828 keep = iwl_mvm_setup_connection_keep(mvm, vif, fw_status);
1829
1830 kfree(fw_status);
1831 return keep;
1832
1833 out_free:
1834 kfree(fw_status);
1835 out_unlock:
1836 mutex_unlock(&mvm->mutex);
1837 return false;
1838 }
1839
1840 #define ND_QUERY_BUF_LEN (sizeof(struct iwl_scan_offload_profile_match) * \
1841 IWL_SCAN_MAX_PROFILES)
1842
1843 struct iwl_mvm_nd_query_results {
1844 u32 matched_profiles;
1845 u8 matches[ND_QUERY_BUF_LEN];
1846 };
1847
1848 static int
iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm, struct iwl_mvm_nd_query_results *results)1849 iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm,
1850 struct iwl_mvm_nd_query_results *results)
1851 {
1852 struct iwl_scan_offload_profiles_query *query;
1853 struct iwl_host_cmd cmd = {
1854 .id = SCAN_OFFLOAD_PROFILES_QUERY_CMD,
1855 .flags = CMD_WANT_SKB,
1856 };
1857 int ret, len;
1858 size_t query_len, matches_len;
1859 int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw);
1860
1861 ret = iwl_mvm_send_cmd(mvm, &cmd);
1862 if (ret) {
1863 IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret);
1864 return ret;
1865 }
1866
1867 if (fw_has_api(&mvm->fw->ucode_capa,
1868 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
1869 query_len = sizeof(struct iwl_scan_offload_profiles_query);
1870 matches_len = sizeof(struct iwl_scan_offload_profile_match) *
1871 max_profiles;
1872 } else {
1873 query_len = sizeof(struct iwl_scan_offload_profiles_query_v1);
1874 matches_len = sizeof(struct iwl_scan_offload_profile_match_v1) *
1875 max_profiles;
1876 }
1877
1878 len = iwl_rx_packet_payload_len(cmd.resp_pkt);
1879 if (len < query_len) {
1880 IWL_ERR(mvm, "Invalid scan offload profiles query response!\n");
1881 ret = -EIO;
1882 goto out_free_resp;
1883 }
1884
1885 query = (void *)cmd.resp_pkt->data;
1886
1887 results->matched_profiles = le32_to_cpu(query->matched_profiles);
1888 memcpy(results->matches, query->matches, matches_len);
1889
1890 #ifdef CONFIG_IWLWIFI_DEBUGFS
1891 mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done);
1892 #endif
1893
1894 out_free_resp:
1895 iwl_free_resp(&cmd);
1896 return ret;
1897 }
1898
iwl_mvm_query_num_match_chans(struct iwl_mvm *mvm, struct iwl_mvm_nd_query_results *query, int idx)1899 static int iwl_mvm_query_num_match_chans(struct iwl_mvm *mvm,
1900 struct iwl_mvm_nd_query_results *query,
1901 int idx)
1902 {
1903 int n_chans = 0, i;
1904
1905 if (fw_has_api(&mvm->fw->ucode_capa,
1906 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
1907 struct iwl_scan_offload_profile_match *matches =
1908 (struct iwl_scan_offload_profile_match *)query->matches;
1909
1910 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; i++)
1911 n_chans += hweight8(matches[idx].matching_channels[i]);
1912 } else {
1913 struct iwl_scan_offload_profile_match_v1 *matches =
1914 (struct iwl_scan_offload_profile_match_v1 *)query->matches;
1915
1916 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1; i++)
1917 n_chans += hweight8(matches[idx].matching_channels[i]);
1918 }
1919
1920 return n_chans;
1921 }
1922
iwl_mvm_query_set_freqs(struct iwl_mvm *mvm, struct iwl_mvm_nd_query_results *query, struct cfg80211_wowlan_nd_match *match, int idx)1923 static void iwl_mvm_query_set_freqs(struct iwl_mvm *mvm,
1924 struct iwl_mvm_nd_query_results *query,
1925 struct cfg80211_wowlan_nd_match *match,
1926 int idx)
1927 {
1928 int i;
1929
1930 if (fw_has_api(&mvm->fw->ucode_capa,
1931 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
1932 struct iwl_scan_offload_profile_match *matches =
1933 (struct iwl_scan_offload_profile_match *)query->matches;
1934
1935 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; i++)
1936 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
1937 match->channels[match->n_channels++] =
1938 mvm->nd_channels[i]->center_freq;
1939 } else {
1940 struct iwl_scan_offload_profile_match_v1 *matches =
1941 (struct iwl_scan_offload_profile_match_v1 *)query->matches;
1942
1943 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1 * 8; i++)
1944 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
1945 match->channels[match->n_channels++] =
1946 mvm->nd_channels[i]->center_freq;
1947 }
1948 }
1949
iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm, struct ieee80211_vif *vif)1950 static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm,
1951 struct ieee80211_vif *vif)
1952 {
1953 struct cfg80211_wowlan_nd_info *net_detect = NULL;
1954 struct cfg80211_wowlan_wakeup wakeup = {
1955 .pattern_idx = -1,
1956 };
1957 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
1958 struct iwl_mvm_nd_query_results query;
1959 struct iwl_wowlan_status *fw_status;
1960 unsigned long matched_profiles;
1961 u32 reasons = 0;
1962 int i, n_matches, ret;
1963
1964 fw_status = iwl_mvm_get_wakeup_status(mvm);
1965 if (!IS_ERR_OR_NULL(fw_status)) {
1966 reasons = le32_to_cpu(fw_status->wakeup_reasons);
1967 kfree(fw_status);
1968 }
1969
1970 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
1971 wakeup.rfkill_release = true;
1972
1973 if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS)
1974 goto out;
1975
1976 ret = iwl_mvm_netdetect_query_results(mvm, &query);
1977 if (ret || !query.matched_profiles) {
1978 wakeup_report = NULL;
1979 goto out;
1980 }
1981
1982 matched_profiles = query.matched_profiles;
1983 if (mvm->n_nd_match_sets) {
1984 n_matches = hweight_long(matched_profiles);
1985 } else {
1986 IWL_ERR(mvm, "no net detect match information available\n");
1987 n_matches = 0;
1988 }
1989
1990 net_detect = kzalloc(struct_size(net_detect, matches, n_matches),
1991 GFP_KERNEL);
1992 if (!net_detect || !n_matches)
1993 goto out_report_nd;
1994
1995 for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) {
1996 struct cfg80211_wowlan_nd_match *match;
1997 int idx, n_channels = 0;
1998
1999 n_channels = iwl_mvm_query_num_match_chans(mvm, &query, i);
2000
2001 match = kzalloc(struct_size(match, channels, n_channels),
2002 GFP_KERNEL);
2003 if (!match)
2004 goto out_report_nd;
2005
2006 net_detect->matches[net_detect->n_matches++] = match;
2007
2008 /* We inverted the order of the SSIDs in the scan
2009 * request, so invert the index here.
2010 */
2011 idx = mvm->n_nd_match_sets - i - 1;
2012 match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len;
2013 memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid,
2014 match->ssid.ssid_len);
2015
2016 if (mvm->n_nd_channels < n_channels)
2017 continue;
2018
2019 iwl_mvm_query_set_freqs(mvm, &query, match, i);
2020 }
2021
2022 out_report_nd:
2023 wakeup.net_detect = net_detect;
2024 out:
2025 iwl_mvm_free_nd(mvm);
2026
2027 mutex_unlock(&mvm->mutex);
2028 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
2029
2030 if (net_detect) {
2031 for (i = 0; i < net_detect->n_matches; i++)
2032 kfree(net_detect->matches[i]);
2033 kfree(net_detect);
2034 }
2035 }
2036
iwl_mvm_d3_disconnect_iter(void *data, u8 *mac, struct ieee80211_vif *vif)2037 static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac,
2038 struct ieee80211_vif *vif)
2039 {
2040 /* skip the one we keep connection on */
2041 if (data == vif)
2042 return;
2043
2044 if (vif->type == NL80211_IFTYPE_STATION)
2045 ieee80211_resume_disconnect(vif);
2046 }
2047
iwl_mvm_rt_status(struct iwl_trans *trans, u32 base, u32 *err_id)2048 static bool iwl_mvm_rt_status(struct iwl_trans *trans, u32 base, u32 *err_id)
2049 {
2050 struct error_table_start {
2051 /* cf. struct iwl_error_event_table */
2052 u32 valid;
2053 __le32 err_id;
2054 } err_info;
2055
2056 if (!base)
2057 return false;
2058
2059 iwl_trans_read_mem_bytes(trans, base,
2060 &err_info, sizeof(err_info));
2061 if (err_info.valid && err_id)
2062 *err_id = le32_to_cpu(err_info.err_id);
2063
2064 return !!err_info.valid;
2065 }
2066
iwl_mvm_check_rt_status(struct iwl_mvm *mvm, struct ieee80211_vif *vif)2067 static bool iwl_mvm_check_rt_status(struct iwl_mvm *mvm,
2068 struct ieee80211_vif *vif)
2069 {
2070 u32 err_id;
2071
2072 /* check for lmac1 error */
2073 if (iwl_mvm_rt_status(mvm->trans,
2074 mvm->trans->dbg.lmac_error_event_table[0],
2075 &err_id)) {
2076 if (err_id == RF_KILL_INDICATOR_FOR_WOWLAN) {
2077 struct cfg80211_wowlan_wakeup wakeup = {
2078 .rfkill_release = true,
2079 };
2080 ieee80211_report_wowlan_wakeup(vif, &wakeup,
2081 GFP_KERNEL);
2082 }
2083 return true;
2084 }
2085
2086 /* check if we have lmac2 set and check for error */
2087 if (iwl_mvm_rt_status(mvm->trans,
2088 mvm->trans->dbg.lmac_error_event_table[1], NULL))
2089 return true;
2090
2091 /* check for umac error */
2092 if (iwl_mvm_rt_status(mvm->trans,
2093 mvm->trans->dbg.umac_error_event_table, NULL))
2094 return true;
2095
2096 return false;
2097 }
2098
__iwl_mvm_resume(struct iwl_mvm *mvm, bool test)2099 static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test)
2100 {
2101 struct ieee80211_vif *vif = NULL;
2102 int ret = 1;
2103 enum iwl_d3_status d3_status;
2104 bool keep = false;
2105 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
2106 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2107 bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa,
2108 IWL_UCODE_TLV_CAPA_D0I3_END_FIRST);
2109
2110 mutex_lock(&mvm->mutex);
2111
2112 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
2113
2114 /* get the BSS vif pointer again */
2115 vif = iwl_mvm_get_bss_vif(mvm);
2116 if (IS_ERR_OR_NULL(vif))
2117 goto err;
2118
2119 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
2120
2121 if (iwl_mvm_check_rt_status(mvm, vif)) {
2122 set_bit(STATUS_FW_ERROR, &mvm->trans->status);
2123 iwl_mvm_dump_nic_error_log(mvm);
2124 iwl_dbg_tlv_time_point(&mvm->fwrt,
2125 IWL_FW_INI_TIME_POINT_FW_ASSERT, NULL);
2126 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert,
2127 false, 0);
2128 ret = 1;
2129 goto err;
2130 }
2131
2132 iwl_dbg_tlv_time_point(&mvm->fwrt, IWL_FW_INI_TIME_POINT_HOST_D3_END,
2133 NULL);
2134
2135 ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, !unified_image);
2136 if (ret)
2137 goto err;
2138
2139 if (d3_status != IWL_D3_STATUS_ALIVE) {
2140 IWL_INFO(mvm, "Device was reset during suspend\n");
2141 goto err;
2142 }
2143
2144 if (d0i3_first) {
2145 struct iwl_host_cmd cmd = {
2146 .id = D0I3_END_CMD,
2147 .flags = CMD_WANT_SKB,
2148 };
2149 int len;
2150
2151 ret = iwl_mvm_send_cmd(mvm, &cmd);
2152 if (ret < 0) {
2153 IWL_ERR(mvm, "Failed to send D0I3_END_CMD first (%d)\n",
2154 ret);
2155 goto err;
2156 }
2157 switch (mvm->cmd_ver.d0i3_resp) {
2158 case 0:
2159 break;
2160 case 1:
2161 len = iwl_rx_packet_payload_len(cmd.resp_pkt);
2162 if (len != sizeof(u32)) {
2163 IWL_ERR(mvm,
2164 "Error with D0I3_END_CMD response size (%d)\n",
2165 len);
2166 goto err;
2167 }
2168 if (IWL_D0I3_RESET_REQUIRE &
2169 le32_to_cpu(*(__le32 *)cmd.resp_pkt->data)) {
2170 iwl_write32(mvm->trans, CSR_RESET,
2171 CSR_RESET_REG_FLAG_FORCE_NMI);
2172 iwl_free_resp(&cmd);
2173 }
2174 break;
2175 default:
2176 WARN_ON(1);
2177 }
2178 }
2179
2180 /*
2181 * Query the current location and source from the D3 firmware so we
2182 * can play it back when we re-intiailize the D0 firmware
2183 */
2184 iwl_mvm_update_changed_regdom(mvm);
2185
2186 /* Re-configure PPAG settings */
2187 iwl_mvm_ppag_send_cmd(mvm);
2188
2189 if (!unified_image)
2190 /* Re-configure default SAR profile */
2191 iwl_mvm_sar_select_profile(mvm, 1, 1);
2192
2193 if (mvm->net_detect) {
2194 /* If this is a non-unified image, we restart the FW,
2195 * so no need to stop the netdetect scan. If that
2196 * fails, continue and try to get the wake-up reasons,
2197 * but trigger a HW restart by keeping a failure code
2198 * in ret.
2199 */
2200 if (unified_image)
2201 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT,
2202 false);
2203
2204 iwl_mvm_query_netdetect_reasons(mvm, vif);
2205 /* has unlocked the mutex, so skip that */
2206 goto out;
2207 } else {
2208 keep = iwl_mvm_query_wakeup_reasons(mvm, vif);
2209 #ifdef CONFIG_IWLWIFI_DEBUGFS
2210 if (keep)
2211 mvm->keep_vif = vif;
2212 #endif
2213 /* has unlocked the mutex, so skip that */
2214 goto out_iterate;
2215 }
2216
2217 err:
2218 iwl_mvm_free_nd(mvm);
2219 mutex_unlock(&mvm->mutex);
2220
2221 out_iterate:
2222 if (!test)
2223 ieee80211_iterate_active_interfaces_rtnl(mvm->hw,
2224 IEEE80211_IFACE_ITER_NORMAL,
2225 iwl_mvm_d3_disconnect_iter, keep ? vif : NULL);
2226
2227 out:
2228 /* no need to reset the device in unified images, if successful */
2229 if (unified_image && !ret) {
2230 /* nothing else to do if we already sent D0I3_END_CMD */
2231 if (d0i3_first)
2232 return 0;
2233
2234 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL);
2235 if (!ret)
2236 return 0;
2237 }
2238
2239 /*
2240 * Reconfigure the device in one of the following cases:
2241 * 1. We are not using a unified image
2242 * 2. We are using a unified image but had an error while exiting D3
2243 */
2244 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
2245
2246 return 1;
2247 }
2248
iwl_mvm_resume_d3(struct iwl_mvm *mvm)2249 static int iwl_mvm_resume_d3(struct iwl_mvm *mvm)
2250 {
2251 iwl_trans_resume(mvm->trans);
2252
2253 return __iwl_mvm_resume(mvm, false);
2254 }
2255
iwl_mvm_resume(struct ieee80211_hw *hw)2256 int iwl_mvm_resume(struct ieee80211_hw *hw)
2257 {
2258 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2259 int ret;
2260
2261 ret = iwl_mvm_resume_d3(mvm);
2262
2263 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
2264
2265 iwl_mvm_resume_tcm(mvm);
2266
2267 iwl_fw_runtime_resume(&mvm->fwrt);
2268
2269 return ret;
2270 }
2271
iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled)2272 void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled)
2273 {
2274 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2275
2276 device_set_wakeup_enable(mvm->trans->dev, enabled);
2277 }
2278
2279 #ifdef CONFIG_IWLWIFI_DEBUGFS
iwl_mvm_d3_test_open(struct inode *inode, struct file *file)2280 static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file)
2281 {
2282 struct iwl_mvm *mvm = inode->i_private;
2283 int err;
2284
2285 if (mvm->d3_test_active)
2286 return -EBUSY;
2287
2288 file->private_data = inode->i_private;
2289
2290 synchronize_net();
2291
2292 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_D3;
2293
2294 iwl_mvm_pause_tcm(mvm, true);
2295
2296 iwl_fw_runtime_suspend(&mvm->fwrt);
2297
2298 /* start pseudo D3 */
2299 rtnl_lock();
2300 err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true);
2301 rtnl_unlock();
2302 if (err > 0)
2303 err = -EINVAL;
2304 if (err)
2305 return err;
2306
2307 mvm->d3_test_active = true;
2308 mvm->keep_vif = NULL;
2309 return 0;
2310 }
2311
iwl_mvm_d3_test_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos)2312 static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf,
2313 size_t count, loff_t *ppos)
2314 {
2315 struct iwl_mvm *mvm = file->private_data;
2316 u32 pme_asserted;
2317
2318 while (true) {
2319 /* read pme_ptr if available */
2320 if (mvm->d3_test_pme_ptr) {
2321 pme_asserted = iwl_trans_read_mem32(mvm->trans,
2322 mvm->d3_test_pme_ptr);
2323 if (pme_asserted)
2324 break;
2325 }
2326
2327 if (msleep_interruptible(100))
2328 break;
2329 }
2330
2331 return 0;
2332 }
2333
iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac, struct ieee80211_vif *vif)2334 static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac,
2335 struct ieee80211_vif *vif)
2336 {
2337 /* skip the one we keep connection on */
2338 if (_data == vif)
2339 return;
2340
2341 if (vif->type == NL80211_IFTYPE_STATION)
2342 ieee80211_connection_loss(vif);
2343 }
2344
iwl_mvm_d3_test_release(struct inode *inode, struct file *file)2345 static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file)
2346 {
2347 struct iwl_mvm *mvm = inode->i_private;
2348 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
2349 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2350
2351 mvm->d3_test_active = false;
2352
2353 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
2354
2355 rtnl_lock();
2356 __iwl_mvm_resume(mvm, true);
2357 rtnl_unlock();
2358
2359 iwl_mvm_resume_tcm(mvm);
2360
2361 iwl_fw_runtime_resume(&mvm->fwrt);
2362
2363 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
2364
2365 iwl_abort_notification_waits(&mvm->notif_wait);
2366 if (!unified_image) {
2367 int remaining_time = 10;
2368
2369 ieee80211_restart_hw(mvm->hw);
2370
2371 /* wait for restart and disconnect all interfaces */
2372 while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2373 remaining_time > 0) {
2374 remaining_time--;
2375 msleep(1000);
2376 }
2377
2378 if (remaining_time == 0)
2379 IWL_ERR(mvm, "Timed out waiting for HW restart!\n");
2380 }
2381
2382 ieee80211_iterate_active_interfaces_atomic(
2383 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
2384 iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif);
2385
2386 return 0;
2387 }
2388
2389 const struct file_operations iwl_dbgfs_d3_test_ops = {
2390 .llseek = no_llseek,
2391 .open = iwl_mvm_d3_test_open,
2392 .read = iwl_mvm_d3_test_read,
2393 .release = iwl_mvm_d3_test_release,
2394 };
2395 #endif
2396