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iwlwifi: mvm: Disable beacon storing in D3 when WOWLAN configured
[deliverable/linux.git] / drivers / net / wireless / intel / iwlwifi / mvm / d3.c
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 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
10 * Copyright(c) 2016 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
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23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
24 * USA
25 *
26 * The full GNU General Public License is included in this distribution
27 * in the file called COPYING.
28 *
29 * Contact Information:
30 * Intel Linux Wireless <linuxwifi@intel.com>
31 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
32 *
33 * BSD LICENSE
34 *
35 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
36 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
37 * Copyright(c) 2016 Intel Deutschland GmbH
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64 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
65 *
66 *****************************************************************************/
67
68 #include <linux/etherdevice.h>
69 #include <linux/ip.h>
70 #include <linux/fs.h>
71 #include <net/cfg80211.h>
72 #include <net/ipv6.h>
73 #include <net/tcp.h>
74 #include <net/addrconf.h>
75 #include "iwl-modparams.h"
76 #include "fw-api.h"
77 #include "mvm.h"
78
79 void iwl_mvm_set_rekey_data(struct ieee80211_hw *hw,
80 struct ieee80211_vif *vif,
81 struct cfg80211_gtk_rekey_data *data)
82 {
83 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
84 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
85
86 if (iwlwifi_mod_params.sw_crypto)
87 return;
88
89 mutex_lock(&mvm->mutex);
90
91 memcpy(mvmvif->rekey_data.kek, data->kek, NL80211_KEK_LEN);
92 memcpy(mvmvif->rekey_data.kck, data->kck, NL80211_KCK_LEN);
93 mvmvif->rekey_data.replay_ctr =
94 cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr));
95 mvmvif->rekey_data.valid = true;
96
97 mutex_unlock(&mvm->mutex);
98 }
99
100 #if IS_ENABLED(CONFIG_IPV6)
101 void iwl_mvm_ipv6_addr_change(struct ieee80211_hw *hw,
102 struct ieee80211_vif *vif,
103 struct inet6_dev *idev)
104 {
105 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
106 struct inet6_ifaddr *ifa;
107 int idx = 0;
108
109 memset(mvmvif->tentative_addrs, 0, sizeof(mvmvif->tentative_addrs));
110
111 read_lock_bh(&idev->lock);
112 list_for_each_entry(ifa, &idev->addr_list, if_list) {
113 mvmvif->target_ipv6_addrs[idx] = ifa->addr;
114 if (ifa->flags & IFA_F_TENTATIVE)
115 __set_bit(idx, mvmvif->tentative_addrs);
116 idx++;
117 if (idx >= IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_MAX)
118 break;
119 }
120 read_unlock_bh(&idev->lock);
121
122 mvmvif->num_target_ipv6_addrs = idx;
123 }
124 #endif
125
126 void iwl_mvm_set_default_unicast_key(struct ieee80211_hw *hw,
127 struct ieee80211_vif *vif, int idx)
128 {
129 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
130
131 mvmvif->tx_key_idx = idx;
132 }
133
134 static void iwl_mvm_convert_p1k(u16 *p1k, __le16 *out)
135 {
136 int i;
137
138 for (i = 0; i < IWL_P1K_SIZE; i++)
139 out[i] = cpu_to_le16(p1k[i]);
140 }
141
142 static const u8 *iwl_mvm_find_max_pn(struct ieee80211_key_conf *key,
143 struct iwl_mvm_key_pn *ptk_pn,
144 struct ieee80211_key_seq *seq,
145 int tid, int queues)
146 {
147 const u8 *ret = seq->ccmp.pn;
148 int i;
149
150 /* get the PN from mac80211, used on the default queue */
151 ieee80211_get_key_rx_seq(key, tid, seq);
152
153 /* and use the internal data for the other queues */
154 for (i = 1; i < queues; i++) {
155 const u8 *tmp = ptk_pn->q[i].pn[tid];
156
157 if (memcmp(ret, tmp, IEEE80211_CCMP_PN_LEN) <= 0)
158 ret = tmp;
159 }
160
161 return ret;
162 }
163
164 struct wowlan_key_data {
165 struct iwl_wowlan_rsc_tsc_params_cmd *rsc_tsc;
166 struct iwl_wowlan_tkip_params_cmd *tkip;
167 bool error, use_rsc_tsc, use_tkip, configure_keys;
168 int wep_key_idx;
169 };
170
171 static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw,
172 struct ieee80211_vif *vif,
173 struct ieee80211_sta *sta,
174 struct ieee80211_key_conf *key,
175 void *_data)
176 {
177 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
178 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
179 struct wowlan_key_data *data = _data;
180 struct aes_sc *aes_sc, *aes_tx_sc = NULL;
181 struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
182 struct iwl_p1k_cache *rx_p1ks;
183 u8 *rx_mic_key;
184 struct ieee80211_key_seq seq;
185 u32 cur_rx_iv32 = 0;
186 u16 p1k[IWL_P1K_SIZE];
187 int ret, i;
188
189 switch (key->cipher) {
190 case WLAN_CIPHER_SUITE_WEP40:
191 case WLAN_CIPHER_SUITE_WEP104: { /* hack it for now */
192 struct {
193 struct iwl_mvm_wep_key_cmd wep_key_cmd;
194 struct iwl_mvm_wep_key wep_key;
195 } __packed wkc = {
196 .wep_key_cmd.mac_id_n_color =
197 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
198 mvmvif->color)),
199 .wep_key_cmd.num_keys = 1,
200 /* firmware sets STA_KEY_FLG_WEP_13BYTES */
201 .wep_key_cmd.decryption_type = STA_KEY_FLG_WEP,
202 .wep_key.key_index = key->keyidx,
203 .wep_key.key_size = key->keylen,
204 };
205
206 /*
207 * This will fail -- the key functions don't set support
208 * pairwise WEP keys. However, that's better than silently
209 * failing WoWLAN. Or maybe not?
210 */
211 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
212 break;
213
214 memcpy(&wkc.wep_key.key[3], key->key, key->keylen);
215 if (key->keyidx == mvmvif->tx_key_idx) {
216 /* TX key must be at offset 0 */
217 wkc.wep_key.key_offset = 0;
218 } else {
219 /* others start at 1 */
220 data->wep_key_idx++;
221 wkc.wep_key.key_offset = data->wep_key_idx;
222 }
223
224 if (data->configure_keys) {
225 mutex_lock(&mvm->mutex);
226 ret = iwl_mvm_send_cmd_pdu(mvm, WEP_KEY, 0,
227 sizeof(wkc), &wkc);
228 data->error = ret != 0;
229
230 mvm->ptk_ivlen = key->iv_len;
231 mvm->ptk_icvlen = key->icv_len;
232 mvm->gtk_ivlen = key->iv_len;
233 mvm->gtk_icvlen = key->icv_len;
234 mutex_unlock(&mvm->mutex);
235 }
236
237 /* don't upload key again */
238 return;
239 }
240 default:
241 data->error = true;
242 return;
243 case WLAN_CIPHER_SUITE_AES_CMAC:
244 /*
245 * Ignore CMAC keys -- the WoWLAN firmware doesn't support them
246 * but we also shouldn't abort suspend due to that. It does have
247 * support for the IGTK key renewal, but doesn't really use the
248 * IGTK for anything. This means we could spuriously wake up or
249 * be deauthenticated, but that was considered acceptable.
250 */
251 return;
252 case WLAN_CIPHER_SUITE_TKIP:
253 if (sta) {
254 u64 pn64;
255
256 tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
257 tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
258
259 rx_p1ks = data->tkip->rx_uni;
260
261 pn64 = atomic64_read(&key->tx_pn);
262 tkip_tx_sc->iv16 = cpu_to_le16(TKIP_PN_TO_IV16(pn64));
263 tkip_tx_sc->iv32 = cpu_to_le32(TKIP_PN_TO_IV32(pn64));
264
265 ieee80211_get_tkip_p1k_iv(key, TKIP_PN_TO_IV32(pn64),
266 p1k);
267 iwl_mvm_convert_p1k(p1k, data->tkip->tx.p1k);
268
269 memcpy(data->tkip->mic_keys.tx,
270 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
271 IWL_MIC_KEY_SIZE);
272
273 rx_mic_key = data->tkip->mic_keys.rx_unicast;
274 } else {
275 tkip_sc =
276 data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc;
277 rx_p1ks = data->tkip->rx_multi;
278 rx_mic_key = data->tkip->mic_keys.rx_mcast;
279 }
280
281 /*
282 * For non-QoS this relies on the fact that both the uCode and
283 * mac80211 use TID 0 (as they need to to avoid replay attacks)
284 * for checking the IV in the frames.
285 */
286 for (i = 0; i < IWL_NUM_RSC; i++) {
287 ieee80211_get_key_rx_seq(key, i, &seq);
288 tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
289 tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
290 /* wrapping isn't allowed, AP must rekey */
291 if (seq.tkip.iv32 > cur_rx_iv32)
292 cur_rx_iv32 = seq.tkip.iv32;
293 }
294
295 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
296 cur_rx_iv32, p1k);
297 iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k);
298 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
299 cur_rx_iv32 + 1, p1k);
300 iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k);
301
302 memcpy(rx_mic_key,
303 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
304 IWL_MIC_KEY_SIZE);
305
306 data->use_tkip = true;
307 data->use_rsc_tsc = true;
308 break;
309 case WLAN_CIPHER_SUITE_CCMP:
310 if (sta) {
311 u64 pn64;
312
313 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
314 aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc;
315
316 pn64 = atomic64_read(&key->tx_pn);
317 aes_tx_sc->pn = cpu_to_le64(pn64);
318 } else {
319 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
320 }
321
322 /*
323 * For non-QoS this relies on the fact that both the uCode and
324 * mac80211/our RX code use TID 0 for checking the PN.
325 */
326 if (sta && iwl_mvm_has_new_rx_api(mvm)) {
327 struct iwl_mvm_sta *mvmsta;
328 struct iwl_mvm_key_pn *ptk_pn;
329 const u8 *pn;
330
331 mvmsta = iwl_mvm_sta_from_mac80211(sta);
332 ptk_pn = rcu_dereference_protected(
333 mvmsta->ptk_pn[key->keyidx],
334 lockdep_is_held(&mvm->mutex));
335 if (WARN_ON(!ptk_pn))
336 break;
337
338 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
339 pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i,
340 mvm->trans->num_rx_queues);
341 aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
342 ((u64)pn[4] << 8) |
343 ((u64)pn[3] << 16) |
344 ((u64)pn[2] << 24) |
345 ((u64)pn[1] << 32) |
346 ((u64)pn[0] << 40));
347 }
348 } else {
349 for (i = 0; i < IWL_NUM_RSC; i++) {
350 u8 *pn = seq.ccmp.pn;
351
352 ieee80211_get_key_rx_seq(key, i, &seq);
353 aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
354 ((u64)pn[4] << 8) |
355 ((u64)pn[3] << 16) |
356 ((u64)pn[2] << 24) |
357 ((u64)pn[1] << 32) |
358 ((u64)pn[0] << 40));
359 }
360 }
361 data->use_rsc_tsc = true;
362 break;
363 }
364
365 if (data->configure_keys) {
366 mutex_lock(&mvm->mutex);
367 /*
368 * The D3 firmware hardcodes the key offset 0 as the key it
369 * uses to transmit packets to the AP, i.e. the PTK.
370 */
371 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
372 mvm->ptk_ivlen = key->iv_len;
373 mvm->ptk_icvlen = key->icv_len;
374 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 0);
375 } else {
376 /*
377 * firmware only supports TSC/RSC for a single key,
378 * so if there are multiple keep overwriting them
379 * with new ones -- this relies on mac80211 doing
380 * list_add_tail().
381 */
382 mvm->gtk_ivlen = key->iv_len;
383 mvm->gtk_icvlen = key->icv_len;
384 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 1);
385 }
386 mutex_unlock(&mvm->mutex);
387 data->error = ret != 0;
388 }
389 }
390
391 static int iwl_mvm_send_patterns(struct iwl_mvm *mvm,
392 struct cfg80211_wowlan *wowlan)
393 {
394 struct iwl_wowlan_patterns_cmd *pattern_cmd;
395 struct iwl_host_cmd cmd = {
396 .id = WOWLAN_PATTERNS,
397 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
398 };
399 int i, err;
400
401 if (!wowlan->n_patterns)
402 return 0;
403
404 cmd.len[0] = sizeof(*pattern_cmd) +
405 wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern);
406
407 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
408 if (!pattern_cmd)
409 return -ENOMEM;
410
411 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
412
413 for (i = 0; i < wowlan->n_patterns; i++) {
414 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
415
416 memcpy(&pattern_cmd->patterns[i].mask,
417 wowlan->patterns[i].mask, mask_len);
418 memcpy(&pattern_cmd->patterns[i].pattern,
419 wowlan->patterns[i].pattern,
420 wowlan->patterns[i].pattern_len);
421 pattern_cmd->patterns[i].mask_size = mask_len;
422 pattern_cmd->patterns[i].pattern_size =
423 wowlan->patterns[i].pattern_len;
424 }
425
426 cmd.data[0] = pattern_cmd;
427 err = iwl_mvm_send_cmd(mvm, &cmd);
428 kfree(pattern_cmd);
429 return err;
430 }
431
432 enum iwl_mvm_tcp_packet_type {
433 MVM_TCP_TX_SYN,
434 MVM_TCP_RX_SYNACK,
435 MVM_TCP_TX_DATA,
436 MVM_TCP_RX_ACK,
437 MVM_TCP_RX_WAKE,
438 MVM_TCP_TX_FIN,
439 };
440
441 static __le16 pseudo_hdr_check(int len, __be32 saddr, __be32 daddr)
442 {
443 __sum16 check = tcp_v4_check(len, saddr, daddr, 0);
444 return cpu_to_le16(be16_to_cpu((__force __be16)check));
445 }
446
447 static void iwl_mvm_build_tcp_packet(struct ieee80211_vif *vif,
448 struct cfg80211_wowlan_tcp *tcp,
449 void *_pkt, u8 *mask,
450 __le16 *pseudo_hdr_csum,
451 enum iwl_mvm_tcp_packet_type ptype)
452 {
453 struct {
454 struct ethhdr eth;
455 struct iphdr ip;
456 struct tcphdr tcp;
457 u8 data[];
458 } __packed *pkt = _pkt;
459 u16 ip_tot_len = sizeof(struct iphdr) + sizeof(struct tcphdr);
460 int i;
461
462 pkt->eth.h_proto = cpu_to_be16(ETH_P_IP),
463 pkt->ip.version = 4;
464 pkt->ip.ihl = 5;
465 pkt->ip.protocol = IPPROTO_TCP;
466
467 switch (ptype) {
468 case MVM_TCP_TX_SYN:
469 case MVM_TCP_TX_DATA:
470 case MVM_TCP_TX_FIN:
471 memcpy(pkt->eth.h_dest, tcp->dst_mac, ETH_ALEN);
472 memcpy(pkt->eth.h_source, vif->addr, ETH_ALEN);
473 pkt->ip.ttl = 128;
474 pkt->ip.saddr = tcp->src;
475 pkt->ip.daddr = tcp->dst;
476 pkt->tcp.source = cpu_to_be16(tcp->src_port);
477 pkt->tcp.dest = cpu_to_be16(tcp->dst_port);
478 /* overwritten for TX SYN later */
479 pkt->tcp.doff = sizeof(struct tcphdr) / 4;
480 pkt->tcp.window = cpu_to_be16(65000);
481 break;
482 case MVM_TCP_RX_SYNACK:
483 case MVM_TCP_RX_ACK:
484 case MVM_TCP_RX_WAKE:
485 memcpy(pkt->eth.h_dest, vif->addr, ETH_ALEN);
486 memcpy(pkt->eth.h_source, tcp->dst_mac, ETH_ALEN);
487 pkt->ip.saddr = tcp->dst;
488 pkt->ip.daddr = tcp->src;
489 pkt->tcp.source = cpu_to_be16(tcp->dst_port);
490 pkt->tcp.dest = cpu_to_be16(tcp->src_port);
491 break;
492 default:
493 WARN_ON(1);
494 return;
495 }
496
497 switch (ptype) {
498 case MVM_TCP_TX_SYN:
499 /* firmware assumes 8 option bytes - 8 NOPs for now */
500 memset(pkt->data, 0x01, 8);
501 ip_tot_len += 8;
502 pkt->tcp.doff = (sizeof(struct tcphdr) + 8) / 4;
503 pkt->tcp.syn = 1;
504 break;
505 case MVM_TCP_TX_DATA:
506 ip_tot_len += tcp->payload_len;
507 memcpy(pkt->data, tcp->payload, tcp->payload_len);
508 pkt->tcp.psh = 1;
509 pkt->tcp.ack = 1;
510 break;
511 case MVM_TCP_TX_FIN:
512 pkt->tcp.fin = 1;
513 pkt->tcp.ack = 1;
514 break;
515 case MVM_TCP_RX_SYNACK:
516 pkt->tcp.syn = 1;
517 pkt->tcp.ack = 1;
518 break;
519 case MVM_TCP_RX_ACK:
520 pkt->tcp.ack = 1;
521 break;
522 case MVM_TCP_RX_WAKE:
523 ip_tot_len += tcp->wake_len;
524 pkt->tcp.psh = 1;
525 pkt->tcp.ack = 1;
526 memcpy(pkt->data, tcp->wake_data, tcp->wake_len);
527 break;
528 }
529
530 switch (ptype) {
531 case MVM_TCP_TX_SYN:
532 case MVM_TCP_TX_DATA:
533 case MVM_TCP_TX_FIN:
534 pkt->ip.tot_len = cpu_to_be16(ip_tot_len);
535 pkt->ip.check = ip_fast_csum(&pkt->ip, pkt->ip.ihl);
536 break;
537 case MVM_TCP_RX_WAKE:
538 for (i = 0; i < DIV_ROUND_UP(tcp->wake_len, 8); i++) {
539 u8 tmp = tcp->wake_mask[i];
540 mask[i + 6] |= tmp << 6;
541 if (i + 1 < DIV_ROUND_UP(tcp->wake_len, 8))
542 mask[i + 7] = tmp >> 2;
543 }
544 /* fall through for ethernet/IP/TCP headers mask */
545 case MVM_TCP_RX_SYNACK:
546 case MVM_TCP_RX_ACK:
547 mask[0] = 0xff; /* match ethernet */
548 /*
549 * match ethernet, ip.version, ip.ihl
550 * the ip.ihl half byte is really masked out by firmware
551 */
552 mask[1] = 0x7f;
553 mask[2] = 0x80; /* match ip.protocol */
554 mask[3] = 0xfc; /* match ip.saddr, ip.daddr */
555 mask[4] = 0x3f; /* match ip.daddr, tcp.source, tcp.dest */
556 mask[5] = 0x80; /* match tcp flags */
557 /* leave rest (0 or set for MVM_TCP_RX_WAKE) */
558 break;
559 };
560
561 *pseudo_hdr_csum = pseudo_hdr_check(ip_tot_len - sizeof(struct iphdr),
562 pkt->ip.saddr, pkt->ip.daddr);
563 }
564
565 static int iwl_mvm_send_remote_wake_cfg(struct iwl_mvm *mvm,
566 struct ieee80211_vif *vif,
567 struct cfg80211_wowlan_tcp *tcp)
568 {
569 struct iwl_wowlan_remote_wake_config *cfg;
570 struct iwl_host_cmd cmd = {
571 .id = REMOTE_WAKE_CONFIG_CMD,
572 .len = { sizeof(*cfg), },
573 .dataflags = { IWL_HCMD_DFL_NOCOPY, },
574 };
575 int ret;
576
577 if (!tcp)
578 return 0;
579
580 cfg = kzalloc(sizeof(*cfg), GFP_KERNEL);
581 if (!cfg)
582 return -ENOMEM;
583 cmd.data[0] = cfg;
584
585 cfg->max_syn_retries = 10;
586 cfg->max_data_retries = 10;
587 cfg->tcp_syn_ack_timeout = 1; /* seconds */
588 cfg->tcp_ack_timeout = 1; /* seconds */
589
590 /* SYN (TX) */
591 iwl_mvm_build_tcp_packet(
592 vif, tcp, cfg->syn_tx.data, NULL,
593 &cfg->syn_tx.info.tcp_pseudo_header_checksum,
594 MVM_TCP_TX_SYN);
595 cfg->syn_tx.info.tcp_payload_length = 0;
596
597 /* SYN/ACK (RX) */
598 iwl_mvm_build_tcp_packet(
599 vif, tcp, cfg->synack_rx.data, cfg->synack_rx.rx_mask,
600 &cfg->synack_rx.info.tcp_pseudo_header_checksum,
601 MVM_TCP_RX_SYNACK);
602 cfg->synack_rx.info.tcp_payload_length = 0;
603
604 /* KEEPALIVE/ACK (TX) */
605 iwl_mvm_build_tcp_packet(
606 vif, tcp, cfg->keepalive_tx.data, NULL,
607 &cfg->keepalive_tx.info.tcp_pseudo_header_checksum,
608 MVM_TCP_TX_DATA);
609 cfg->keepalive_tx.info.tcp_payload_length =
610 cpu_to_le16(tcp->payload_len);
611 cfg->sequence_number_offset = tcp->payload_seq.offset;
612 /* length must be 0..4, the field is little endian */
613 cfg->sequence_number_length = tcp->payload_seq.len;
614 cfg->initial_sequence_number = cpu_to_le32(tcp->payload_seq.start);
615 cfg->keepalive_interval = cpu_to_le16(tcp->data_interval);
616 if (tcp->payload_tok.len) {
617 cfg->token_offset = tcp->payload_tok.offset;
618 cfg->token_length = tcp->payload_tok.len;
619 cfg->num_tokens =
620 cpu_to_le16(tcp->tokens_size % tcp->payload_tok.len);
621 memcpy(cfg->tokens, tcp->payload_tok.token_stream,
622 tcp->tokens_size);
623 } else {
624 /* set tokens to max value to almost never run out */
625 cfg->num_tokens = cpu_to_le16(65535);
626 }
627
628 /* ACK (RX) */
629 iwl_mvm_build_tcp_packet(
630 vif, tcp, cfg->keepalive_ack_rx.data,
631 cfg->keepalive_ack_rx.rx_mask,
632 &cfg->keepalive_ack_rx.info.tcp_pseudo_header_checksum,
633 MVM_TCP_RX_ACK);
634 cfg->keepalive_ack_rx.info.tcp_payload_length = 0;
635
636 /* WAKEUP (RX) */
637 iwl_mvm_build_tcp_packet(
638 vif, tcp, cfg->wake_rx.data, cfg->wake_rx.rx_mask,
639 &cfg->wake_rx.info.tcp_pseudo_header_checksum,
640 MVM_TCP_RX_WAKE);
641 cfg->wake_rx.info.tcp_payload_length =
642 cpu_to_le16(tcp->wake_len);
643
644 /* FIN */
645 iwl_mvm_build_tcp_packet(
646 vif, tcp, cfg->fin_tx.data, NULL,
647 &cfg->fin_tx.info.tcp_pseudo_header_checksum,
648 MVM_TCP_TX_FIN);
649 cfg->fin_tx.info.tcp_payload_length = 0;
650
651 ret = iwl_mvm_send_cmd(mvm, &cmd);
652 kfree(cfg);
653
654 return ret;
655 }
656
657 static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
658 struct ieee80211_sta *ap_sta)
659 {
660 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
661 struct ieee80211_chanctx_conf *ctx;
662 u8 chains_static, chains_dynamic;
663 struct cfg80211_chan_def chandef;
664 int ret, i;
665 struct iwl_binding_cmd binding_cmd = {};
666 struct iwl_time_quota_cmd quota_cmd = {};
667 u32 status;
668
669 /* add back the PHY */
670 if (WARN_ON(!mvmvif->phy_ctxt))
671 return -EINVAL;
672
673 rcu_read_lock();
674 ctx = rcu_dereference(vif->chanctx_conf);
675 if (WARN_ON(!ctx)) {
676 rcu_read_unlock();
677 return -EINVAL;
678 }
679 chandef = ctx->def;
680 chains_static = ctx->rx_chains_static;
681 chains_dynamic = ctx->rx_chains_dynamic;
682 rcu_read_unlock();
683
684 ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt, &chandef,
685 chains_static, chains_dynamic);
686 if (ret)
687 return ret;
688
689 /* add back the MAC */
690 mvmvif->uploaded = false;
691
692 if (WARN_ON(!vif->bss_conf.assoc))
693 return -EINVAL;
694
695 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
696 if (ret)
697 return ret;
698
699 /* add back binding - XXX refactor? */
700 binding_cmd.id_and_color =
701 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
702 mvmvif->phy_ctxt->color));
703 binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD);
704 binding_cmd.phy =
705 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
706 mvmvif->phy_ctxt->color));
707 binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
708 mvmvif->color));
709 for (i = 1; i < MAX_MACS_IN_BINDING; i++)
710 binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID);
711
712 status = 0;
713 ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD,
714 sizeof(binding_cmd), &binding_cmd,
715 &status);
716 if (ret) {
717 IWL_ERR(mvm, "Failed to add binding: %d\n", ret);
718 return ret;
719 }
720
721 if (status) {
722 IWL_ERR(mvm, "Binding command failed: %u\n", status);
723 return -EIO;
724 }
725
726 ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false);
727 if (ret)
728 return ret;
729 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], ap_sta);
730
731 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
732 if (ret)
733 return ret;
734
735 /* and some quota */
736 quota_cmd.quotas[0].id_and_color =
737 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
738 mvmvif->phy_ctxt->color));
739 quota_cmd.quotas[0].quota = cpu_to_le32(IWL_MVM_MAX_QUOTA);
740 quota_cmd.quotas[0].max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA);
741
742 for (i = 1; i < MAX_BINDINGS; i++)
743 quota_cmd.quotas[i].id_and_color = cpu_to_le32(FW_CTXT_INVALID);
744
745 ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0,
746 sizeof(quota_cmd), &quota_cmd);
747 if (ret)
748 IWL_ERR(mvm, "Failed to send quota: %d\n", ret);
749
750 if (iwl_mvm_is_lar_supported(mvm) && iwl_mvm_init_fw_regd(mvm))
751 IWL_ERR(mvm, "Failed to initialize D3 LAR information\n");
752
753 return 0;
754 }
755
756 static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm,
757 struct ieee80211_vif *vif)
758 {
759 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
760 struct iwl_nonqos_seq_query_cmd query_cmd = {
761 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET),
762 .mac_id_n_color =
763 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
764 mvmvif->color)),
765 };
766 struct iwl_host_cmd cmd = {
767 .id = NON_QOS_TX_COUNTER_CMD,
768 .flags = CMD_WANT_SKB,
769 };
770 int err;
771 u32 size;
772
773 cmd.data[0] = &query_cmd;
774 cmd.len[0] = sizeof(query_cmd);
775
776 err = iwl_mvm_send_cmd(mvm, &cmd);
777 if (err)
778 return err;
779
780 size = iwl_rx_packet_payload_len(cmd.resp_pkt);
781 if (size < sizeof(__le16)) {
782 err = -EINVAL;
783 } else {
784 err = le16_to_cpup((__le16 *)cmd.resp_pkt->data);
785 /* firmware returns next, not last-used seqno */
786 err = (u16) (err - 0x10);
787 }
788
789 iwl_free_resp(&cmd);
790 return err;
791 }
792
793 void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
794 {
795 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
796 struct iwl_nonqos_seq_query_cmd query_cmd = {
797 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET),
798 .mac_id_n_color =
799 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
800 mvmvif->color)),
801 .value = cpu_to_le16(mvmvif->seqno),
802 };
803
804 /* return if called during restart, not resume from D3 */
805 if (!mvmvif->seqno_valid)
806 return;
807
808 mvmvif->seqno_valid = false;
809
810 if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0,
811 sizeof(query_cmd), &query_cmd))
812 IWL_ERR(mvm, "failed to set non-QoS seqno\n");
813 }
814
815 static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm)
816 {
817 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
818
819 iwl_trans_stop_device(mvm->trans);
820
821 /*
822 * Set the HW restart bit -- this is mostly true as we're
823 * going to load new firmware and reprogram that, though
824 * the reprogramming is going to be manual to avoid adding
825 * all the MACs that aren't support.
826 * We don't have to clear up everything though because the
827 * reprogramming is manual. When we resume, we'll actually
828 * go through a proper restart sequence again to switch
829 * back to the runtime firmware image.
830 */
831 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
832
833 /* the fw is reset, so all the keys are cleared */
834 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
835
836 mvm->ptk_ivlen = 0;
837 mvm->ptk_icvlen = 0;
838 mvm->ptk_ivlen = 0;
839 mvm->ptk_icvlen = 0;
840
841 return iwl_mvm_load_d3_fw(mvm);
842 }
843
844 static int
845 iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm,
846 struct cfg80211_wowlan *wowlan,
847 struct iwl_wowlan_config_cmd *wowlan_config_cmd,
848 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
849 struct ieee80211_sta *ap_sta)
850 {
851 int ret;
852 struct iwl_mvm_sta *mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
853
854 /* TODO: wowlan_config_cmd->wowlan_ba_teardown_tids */
855
856 wowlan_config_cmd->is_11n_connection =
857 ap_sta->ht_cap.ht_supported;
858 wowlan_config_cmd->flags = ENABLE_L3_FILTERING |
859 ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING;
860
861 /* Query the last used seqno and set it */
862 ret = iwl_mvm_get_last_nonqos_seq(mvm, vif);
863 if (ret < 0)
864 return ret;
865
866 wowlan_config_cmd->non_qos_seq = cpu_to_le16(ret);
867
868 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, wowlan_config_cmd);
869
870 if (wowlan->disconnect)
871 wowlan_config_cmd->wakeup_filter |=
872 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
873 IWL_WOWLAN_WAKEUP_LINK_CHANGE);
874 if (wowlan->magic_pkt)
875 wowlan_config_cmd->wakeup_filter |=
876 cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET);
877 if (wowlan->gtk_rekey_failure)
878 wowlan_config_cmd->wakeup_filter |=
879 cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
880 if (wowlan->eap_identity_req)
881 wowlan_config_cmd->wakeup_filter |=
882 cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ);
883 if (wowlan->four_way_handshake)
884 wowlan_config_cmd->wakeup_filter |=
885 cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
886 if (wowlan->n_patterns)
887 wowlan_config_cmd->wakeup_filter |=
888 cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH);
889
890 if (wowlan->rfkill_release)
891 wowlan_config_cmd->wakeup_filter |=
892 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
893
894 if (wowlan->tcp) {
895 /*
896 * Set the "link change" (really "link lost") flag as well
897 * since that implies losing the TCP connection.
898 */
899 wowlan_config_cmd->wakeup_filter |=
900 cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS |
901 IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE |
902 IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET |
903 IWL_WOWLAN_WAKEUP_LINK_CHANGE);
904 }
905
906 return 0;
907 }
908
909 static void
910 iwl_mvm_iter_d0i3_ap_keys(struct iwl_mvm *mvm,
911 struct ieee80211_vif *vif,
912 void (*iter)(struct ieee80211_hw *hw,
913 struct ieee80211_vif *vif,
914 struct ieee80211_sta *sta,
915 struct ieee80211_key_conf *key,
916 void *data),
917 void *data)
918 {
919 struct ieee80211_sta *ap_sta;
920
921 rcu_read_lock();
922
923 ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id]);
924 if (IS_ERR_OR_NULL(ap_sta))
925 goto out;
926
927 ieee80211_iter_keys_rcu(mvm->hw, vif, iter, data);
928 out:
929 rcu_read_unlock();
930 }
931
932 int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm,
933 struct ieee80211_vif *vif,
934 bool d0i3,
935 u32 cmd_flags)
936 {
937 struct iwl_wowlan_kek_kck_material_cmd kek_kck_cmd = {};
938 struct iwl_wowlan_tkip_params_cmd tkip_cmd = {};
939 struct wowlan_key_data key_data = {
940 .configure_keys = !d0i3,
941 .use_rsc_tsc = false,
942 .tkip = &tkip_cmd,
943 .use_tkip = false,
944 };
945 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
946 int ret;
947
948 key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
949 if (!key_data.rsc_tsc)
950 return -ENOMEM;
951
952 /*
953 * if we have to configure keys, call ieee80211_iter_keys(),
954 * as we need non-atomic context in order to take the
955 * required locks.
956 * for the d0i3 we can't use ieee80211_iter_keys(), as
957 * taking (almost) any mutex might result in deadlock.
958 */
959 if (!d0i3) {
960 /*
961 * Note that currently we don't propagate cmd_flags
962 * to the iterator. In case of key_data.configure_keys,
963 * all the configured commands are SYNC, and
964 * iwl_mvm_wowlan_program_keys() will take care of
965 * locking/unlocking mvm->mutex.
966 */
967 ieee80211_iter_keys(mvm->hw, vif,
968 iwl_mvm_wowlan_program_keys,
969 &key_data);
970 } else {
971 iwl_mvm_iter_d0i3_ap_keys(mvm, vif,
972 iwl_mvm_wowlan_program_keys,
973 &key_data);
974 }
975
976 if (key_data.error) {
977 ret = -EIO;
978 goto out;
979 }
980
981 if (key_data.use_rsc_tsc) {
982 ret = iwl_mvm_send_cmd_pdu(mvm,
983 WOWLAN_TSC_RSC_PARAM, cmd_flags,
984 sizeof(*key_data.rsc_tsc),
985 key_data.rsc_tsc);
986 if (ret)
987 goto out;
988 }
989
990 if (key_data.use_tkip) {
991 ret = iwl_mvm_send_cmd_pdu(mvm,
992 WOWLAN_TKIP_PARAM,
993 cmd_flags, sizeof(tkip_cmd),
994 &tkip_cmd);
995 if (ret)
996 goto out;
997 }
998
999 /* configure rekey data only if offloaded rekey is supported (d3) */
1000 if (mvmvif->rekey_data.valid && !d0i3) {
1001 memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
1002 memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck,
1003 NL80211_KCK_LEN);
1004 kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
1005 memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek,
1006 NL80211_KEK_LEN);
1007 kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
1008 kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr;
1009
1010 ret = iwl_mvm_send_cmd_pdu(mvm,
1011 WOWLAN_KEK_KCK_MATERIAL, cmd_flags,
1012 sizeof(kek_kck_cmd),
1013 &kek_kck_cmd);
1014 if (ret)
1015 goto out;
1016 }
1017 ret = 0;
1018 out:
1019 kfree(key_data.rsc_tsc);
1020 return ret;
1021 }
1022
1023 static int
1024 iwl_mvm_wowlan_config(struct iwl_mvm *mvm,
1025 struct cfg80211_wowlan *wowlan,
1026 struct iwl_wowlan_config_cmd *wowlan_config_cmd,
1027 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
1028 struct ieee80211_sta *ap_sta)
1029 {
1030 int ret;
1031 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1032 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1033
1034 if (!unified_image) {
1035 ret = iwl_mvm_switch_to_d3(mvm);
1036 if (ret)
1037 return ret;
1038
1039 ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta);
1040 if (ret)
1041 return ret;
1042 }
1043
1044 if (!iwlwifi_mod_params.sw_crypto) {
1045 /*
1046 * This needs to be unlocked due to lock ordering
1047 * constraints. Since we're in the suspend path
1048 * that isn't really a problem though.
1049 */
1050 mutex_unlock(&mvm->mutex);
1051 ret = iwl_mvm_wowlan_config_key_params(mvm, vif, false,
1052 CMD_ASYNC);
1053 mutex_lock(&mvm->mutex);
1054 if (ret)
1055 return ret;
1056 }
1057
1058 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0,
1059 sizeof(*wowlan_config_cmd),
1060 wowlan_config_cmd);
1061 if (ret)
1062 return ret;
1063
1064 ret = iwl_mvm_send_patterns(mvm, wowlan);
1065 if (ret)
1066 return ret;
1067
1068 ret = iwl_mvm_send_proto_offload(mvm, vif, false, true, 0);
1069 if (ret)
1070 return ret;
1071
1072 ret = iwl_mvm_send_remote_wake_cfg(mvm, vif, wowlan->tcp);
1073 return ret;
1074 }
1075
1076 static int
1077 iwl_mvm_netdetect_config(struct iwl_mvm *mvm,
1078 struct cfg80211_wowlan *wowlan,
1079 struct cfg80211_sched_scan_request *nd_config,
1080 struct ieee80211_vif *vif)
1081 {
1082 struct iwl_wowlan_config_cmd wowlan_config_cmd = {};
1083 int ret;
1084 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1085 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1086
1087 if (!unified_image) {
1088 ret = iwl_mvm_switch_to_d3(mvm);
1089 if (ret)
1090 return ret;
1091 }
1092
1093 /* rfkill release can be either for wowlan or netdetect */
1094 if (wowlan->rfkill_release)
1095 wowlan_config_cmd.wakeup_filter |=
1096 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
1097
1098 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0,
1099 sizeof(wowlan_config_cmd),
1100 &wowlan_config_cmd);
1101 if (ret)
1102 return ret;
1103
1104 ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies,
1105 IWL_MVM_SCAN_NETDETECT);
1106 if (ret)
1107 return ret;
1108
1109 if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels))
1110 return -EBUSY;
1111
1112 /* save the sched scan matchsets... */
1113 if (nd_config->n_match_sets) {
1114 mvm->nd_match_sets = kmemdup(nd_config->match_sets,
1115 sizeof(*nd_config->match_sets) *
1116 nd_config->n_match_sets,
1117 GFP_KERNEL);
1118 if (mvm->nd_match_sets)
1119 mvm->n_nd_match_sets = nd_config->n_match_sets;
1120 }
1121
1122 /* ...and the sched scan channels for later reporting */
1123 mvm->nd_channels = kmemdup(nd_config->channels,
1124 sizeof(*nd_config->channels) *
1125 nd_config->n_channels,
1126 GFP_KERNEL);
1127 if (mvm->nd_channels)
1128 mvm->n_nd_channels = nd_config->n_channels;
1129
1130 return 0;
1131 }
1132
1133 static void iwl_mvm_free_nd(struct iwl_mvm *mvm)
1134 {
1135 kfree(mvm->nd_match_sets);
1136 mvm->nd_match_sets = NULL;
1137 mvm->n_nd_match_sets = 0;
1138 kfree(mvm->nd_channels);
1139 mvm->nd_channels = NULL;
1140 mvm->n_nd_channels = 0;
1141 }
1142
1143 static int __iwl_mvm_suspend(struct ieee80211_hw *hw,
1144 struct cfg80211_wowlan *wowlan,
1145 bool test)
1146 {
1147 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1148 struct ieee80211_vif *vif = NULL;
1149 struct iwl_mvm_vif *mvmvif = NULL;
1150 struct ieee80211_sta *ap_sta = NULL;
1151 struct iwl_d3_manager_config d3_cfg_cmd_data = {
1152 /*
1153 * Program the minimum sleep time to 10 seconds, as many
1154 * platforms have issues processing a wakeup signal while
1155 * still being in the process of suspending.
1156 */
1157 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000),
1158 };
1159 struct iwl_host_cmd d3_cfg_cmd = {
1160 .id = D3_CONFIG_CMD,
1161 .flags = CMD_WANT_SKB,
1162 .data[0] = &d3_cfg_cmd_data,
1163 .len[0] = sizeof(d3_cfg_cmd_data),
1164 };
1165 int ret;
1166 int len __maybe_unused;
1167 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1168 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1169
1170 if (!wowlan) {
1171 /*
1172 * mac80211 shouldn't get here, but for D3 test
1173 * it doesn't warrant a warning
1174 */
1175 WARN_ON(!test);
1176 return -EINVAL;
1177 }
1178
1179 mutex_lock(&mvm->mutex);
1180
1181 vif = iwl_mvm_get_bss_vif(mvm);
1182 if (IS_ERR_OR_NULL(vif)) {
1183 ret = 1;
1184 goto out_noreset;
1185 }
1186
1187 mvmvif = iwl_mvm_vif_from_mac80211(vif);
1188
1189 if (mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT) {
1190 /* if we're not associated, this must be netdetect */
1191 if (!wowlan->nd_config) {
1192 ret = 1;
1193 goto out_noreset;
1194 }
1195
1196 ret = iwl_mvm_netdetect_config(
1197 mvm, wowlan, wowlan->nd_config, vif);
1198 if (ret)
1199 goto out;
1200
1201 mvm->net_detect = true;
1202 } else {
1203 struct iwl_wowlan_config_cmd wowlan_config_cmd = {};
1204
1205 ap_sta = rcu_dereference_protected(
1206 mvm->fw_id_to_mac_id[mvmvif->ap_sta_id],
1207 lockdep_is_held(&mvm->mutex));
1208 if (IS_ERR_OR_NULL(ap_sta)) {
1209 ret = -EINVAL;
1210 goto out_noreset;
1211 }
1212
1213 ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1214 vif, mvmvif, ap_sta);
1215 if (ret)
1216 goto out_noreset;
1217 ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1218 vif, mvmvif, ap_sta);
1219 if (ret)
1220 goto out;
1221
1222 mvm->net_detect = false;
1223 }
1224
1225 ret = iwl_mvm_power_update_device(mvm);
1226 if (ret)
1227 goto out;
1228
1229 ret = iwl_mvm_power_update_mac(mvm);
1230 if (ret)
1231 goto out;
1232
1233 #ifdef CONFIG_IWLWIFI_DEBUGFS
1234 if (mvm->d3_wake_sysassert)
1235 d3_cfg_cmd_data.wakeup_flags |=
1236 cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR);
1237 #endif
1238
1239 /* must be last -- this switches firmware state */
1240 ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd);
1241 if (ret)
1242 goto out;
1243 #ifdef CONFIG_IWLWIFI_DEBUGFS
1244 len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt);
1245 if (len >= sizeof(u32)) {
1246 mvm->d3_test_pme_ptr =
1247 le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data);
1248 }
1249 #endif
1250 iwl_free_resp(&d3_cfg_cmd);
1251
1252 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1253
1254 iwl_trans_d3_suspend(mvm->trans, test, !unified_image);
1255 out:
1256 if (ret < 0) {
1257 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1258 ieee80211_restart_hw(mvm->hw);
1259 iwl_mvm_free_nd(mvm);
1260 }
1261 out_noreset:
1262 mutex_unlock(&mvm->mutex);
1263
1264 return ret;
1265 }
1266
1267 static int iwl_mvm_enter_d0i3_sync(struct iwl_mvm *mvm)
1268 {
1269 struct iwl_notification_wait wait_d3;
1270 static const u16 d3_notif[] = { D3_CONFIG_CMD };
1271 int ret;
1272
1273 iwl_init_notification_wait(&mvm->notif_wait, &wait_d3,
1274 d3_notif, ARRAY_SIZE(d3_notif),
1275 NULL, NULL);
1276
1277 ret = iwl_mvm_enter_d0i3(mvm->hw->priv);
1278 if (ret)
1279 goto remove_notif;
1280
1281 ret = iwl_wait_notification(&mvm->notif_wait, &wait_d3, HZ);
1282 WARN_ON_ONCE(ret);
1283 return ret;
1284
1285 remove_notif:
1286 iwl_remove_notification(&mvm->notif_wait, &wait_d3);
1287 return ret;
1288 }
1289
1290 int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
1291 {
1292 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1293 struct iwl_trans *trans = mvm->trans;
1294 int ret;
1295
1296 /* make sure the d0i3 exit work is not pending */
1297 flush_work(&mvm->d0i3_exit_work);
1298
1299 ret = iwl_trans_suspend(trans);
1300 if (ret)
1301 return ret;
1302
1303 if (wowlan->any) {
1304 trans->system_pm_mode = IWL_PLAT_PM_MODE_D0I3;
1305
1306 if (iwl_mvm_enter_d0i3_on_suspend(mvm)) {
1307 ret = iwl_mvm_enter_d0i3_sync(mvm);
1308
1309 if (ret)
1310 return ret;
1311 }
1312
1313 mutex_lock(&mvm->d0i3_suspend_mutex);
1314 __set_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags);
1315 mutex_unlock(&mvm->d0i3_suspend_mutex);
1316
1317 iwl_trans_d3_suspend(trans, false, false);
1318
1319 return 0;
1320 }
1321
1322 trans->system_pm_mode = IWL_PLAT_PM_MODE_D3;
1323
1324 return __iwl_mvm_suspend(hw, wowlan, false);
1325 }
1326
1327 /* converted data from the different status responses */
1328 struct iwl_wowlan_status_data {
1329 u16 pattern_number;
1330 u16 qos_seq_ctr[8];
1331 u32 wakeup_reasons;
1332 u32 wake_packet_length;
1333 u32 wake_packet_bufsize;
1334 const u8 *wake_packet;
1335 };
1336
1337 static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm,
1338 struct ieee80211_vif *vif,
1339 struct iwl_wowlan_status_data *status)
1340 {
1341 struct sk_buff *pkt = NULL;
1342 struct cfg80211_wowlan_wakeup wakeup = {
1343 .pattern_idx = -1,
1344 };
1345 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
1346 u32 reasons = status->wakeup_reasons;
1347
1348 if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
1349 wakeup_report = NULL;
1350 goto report;
1351 }
1352
1353 pm_wakeup_event(mvm->dev, 0);
1354
1355 if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET)
1356 wakeup.magic_pkt = true;
1357
1358 if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN)
1359 wakeup.pattern_idx =
1360 status->pattern_number;
1361
1362 if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1363 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH))
1364 wakeup.disconnect = true;
1365
1366 if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)
1367 wakeup.gtk_rekey_failure = true;
1368
1369 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
1370 wakeup.rfkill_release = true;
1371
1372 if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST)
1373 wakeup.eap_identity_req = true;
1374
1375 if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE)
1376 wakeup.four_way_handshake = true;
1377
1378 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS)
1379 wakeup.tcp_connlost = true;
1380
1381 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE)
1382 wakeup.tcp_nomoretokens = true;
1383
1384 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET)
1385 wakeup.tcp_match = true;
1386
1387 if (status->wake_packet_bufsize) {
1388 int pktsize = status->wake_packet_bufsize;
1389 int pktlen = status->wake_packet_length;
1390 const u8 *pktdata = status->wake_packet;
1391 struct ieee80211_hdr *hdr = (void *)pktdata;
1392 int truncated = pktlen - pktsize;
1393
1394 /* this would be a firmware bug */
1395 if (WARN_ON_ONCE(truncated < 0))
1396 truncated = 0;
1397
1398 if (ieee80211_is_data(hdr->frame_control)) {
1399 int hdrlen = ieee80211_hdrlen(hdr->frame_control);
1400 int ivlen = 0, icvlen = 4; /* also FCS */
1401
1402 pkt = alloc_skb(pktsize, GFP_KERNEL);
1403 if (!pkt)
1404 goto report;
1405
1406 memcpy(skb_put(pkt, hdrlen), pktdata, hdrlen);
1407 pktdata += hdrlen;
1408 pktsize -= hdrlen;
1409
1410 if (ieee80211_has_protected(hdr->frame_control)) {
1411 /*
1412 * This is unlocked and using gtk_i(c)vlen,
1413 * but since everything is under RTNL still
1414 * that's not really a problem - changing
1415 * it would be difficult.
1416 */
1417 if (is_multicast_ether_addr(hdr->addr1)) {
1418 ivlen = mvm->gtk_ivlen;
1419 icvlen += mvm->gtk_icvlen;
1420 } else {
1421 ivlen = mvm->ptk_ivlen;
1422 icvlen += mvm->ptk_icvlen;
1423 }
1424 }
1425
1426 /* if truncated, FCS/ICV is (partially) gone */
1427 if (truncated >= icvlen) {
1428 icvlen = 0;
1429 truncated -= icvlen;
1430 } else {
1431 icvlen -= truncated;
1432 truncated = 0;
1433 }
1434
1435 pktsize -= ivlen + icvlen;
1436 pktdata += ivlen;
1437
1438 memcpy(skb_put(pkt, pktsize), pktdata, pktsize);
1439
1440 if (ieee80211_data_to_8023(pkt, vif->addr, vif->type))
1441 goto report;
1442 wakeup.packet = pkt->data;
1443 wakeup.packet_present_len = pkt->len;
1444 wakeup.packet_len = pkt->len - truncated;
1445 wakeup.packet_80211 = false;
1446 } else {
1447 int fcslen = 4;
1448
1449 if (truncated >= 4) {
1450 truncated -= 4;
1451 fcslen = 0;
1452 } else {
1453 fcslen -= truncated;
1454 truncated = 0;
1455 }
1456 pktsize -= fcslen;
1457 wakeup.packet = status->wake_packet;
1458 wakeup.packet_present_len = pktsize;
1459 wakeup.packet_len = pktlen - truncated;
1460 wakeup.packet_80211 = true;
1461 }
1462 }
1463
1464 report:
1465 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
1466 kfree_skb(pkt);
1467 }
1468
1469 static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc,
1470 struct ieee80211_key_seq *seq)
1471 {
1472 u64 pn;
1473
1474 pn = le64_to_cpu(sc->pn);
1475 seq->ccmp.pn[0] = pn >> 40;
1476 seq->ccmp.pn[1] = pn >> 32;
1477 seq->ccmp.pn[2] = pn >> 24;
1478 seq->ccmp.pn[3] = pn >> 16;
1479 seq->ccmp.pn[4] = pn >> 8;
1480 seq->ccmp.pn[5] = pn;
1481 }
1482
1483 static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc,
1484 struct ieee80211_key_seq *seq)
1485 {
1486 seq->tkip.iv32 = le32_to_cpu(sc->iv32);
1487 seq->tkip.iv16 = le16_to_cpu(sc->iv16);
1488 }
1489
1490 static void iwl_mvm_set_aes_rx_seq(struct iwl_mvm *mvm, struct aes_sc *scs,
1491 struct ieee80211_sta *sta,
1492 struct ieee80211_key_conf *key)
1493 {
1494 int tid;
1495
1496 BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS);
1497
1498 if (sta && iwl_mvm_has_new_rx_api(mvm)) {
1499 struct iwl_mvm_sta *mvmsta;
1500 struct iwl_mvm_key_pn *ptk_pn;
1501
1502 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1503
1504 ptk_pn = rcu_dereference_protected(mvmsta->ptk_pn[key->keyidx],
1505 lockdep_is_held(&mvm->mutex));
1506 if (WARN_ON(!ptk_pn))
1507 return;
1508
1509 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1510 struct ieee80211_key_seq seq = {};
1511 int i;
1512
1513 iwl_mvm_aes_sc_to_seq(&scs[tid], &seq);
1514 ieee80211_set_key_rx_seq(key, tid, &seq);
1515 for (i = 1; i < mvm->trans->num_rx_queues; i++)
1516 memcpy(ptk_pn->q[i].pn[tid],
1517 seq.ccmp.pn, IEEE80211_CCMP_PN_LEN);
1518 }
1519 } else {
1520 for (tid = 0; tid < IWL_NUM_RSC; tid++) {
1521 struct ieee80211_key_seq seq = {};
1522
1523 iwl_mvm_aes_sc_to_seq(&scs[tid], &seq);
1524 ieee80211_set_key_rx_seq(key, tid, &seq);
1525 }
1526 }
1527 }
1528
1529 static void iwl_mvm_set_tkip_rx_seq(struct tkip_sc *scs,
1530 struct ieee80211_key_conf *key)
1531 {
1532 int tid;
1533
1534 BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS);
1535
1536 for (tid = 0; tid < IWL_NUM_RSC; tid++) {
1537 struct ieee80211_key_seq seq = {};
1538
1539 iwl_mvm_tkip_sc_to_seq(&scs[tid], &seq);
1540 ieee80211_set_key_rx_seq(key, tid, &seq);
1541 }
1542 }
1543
1544 static void iwl_mvm_set_key_rx_seq(struct iwl_mvm *mvm,
1545 struct ieee80211_key_conf *key,
1546 struct iwl_wowlan_status *status)
1547 {
1548 union iwl_all_tsc_rsc *rsc = &status->gtk.rsc.all_tsc_rsc;
1549
1550 switch (key->cipher) {
1551 case WLAN_CIPHER_SUITE_CCMP:
1552 iwl_mvm_set_aes_rx_seq(mvm, rsc->aes.multicast_rsc, NULL, key);
1553 break;
1554 case WLAN_CIPHER_SUITE_TKIP:
1555 iwl_mvm_set_tkip_rx_seq(rsc->tkip.multicast_rsc, key);
1556 break;
1557 default:
1558 WARN_ON(1);
1559 }
1560 }
1561
1562 struct iwl_mvm_d3_gtk_iter_data {
1563 struct iwl_mvm *mvm;
1564 struct iwl_wowlan_status *status;
1565 void *last_gtk;
1566 u32 cipher;
1567 bool find_phase, unhandled_cipher;
1568 int num_keys;
1569 };
1570
1571 static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw,
1572 struct ieee80211_vif *vif,
1573 struct ieee80211_sta *sta,
1574 struct ieee80211_key_conf *key,
1575 void *_data)
1576 {
1577 struct iwl_mvm_d3_gtk_iter_data *data = _data;
1578
1579 if (data->unhandled_cipher)
1580 return;
1581
1582 switch (key->cipher) {
1583 case WLAN_CIPHER_SUITE_WEP40:
1584 case WLAN_CIPHER_SUITE_WEP104:
1585 /* ignore WEP completely, nothing to do */
1586 return;
1587 case WLAN_CIPHER_SUITE_CCMP:
1588 case WLAN_CIPHER_SUITE_TKIP:
1589 /* we support these */
1590 break;
1591 default:
1592 /* everything else (even CMAC for MFP) - disconnect from AP */
1593 data->unhandled_cipher = true;
1594 return;
1595 }
1596
1597 data->num_keys++;
1598
1599 /*
1600 * pairwise key - update sequence counters only;
1601 * note that this assumes no TDLS sessions are active
1602 */
1603 if (sta) {
1604 struct ieee80211_key_seq seq = {};
1605 union iwl_all_tsc_rsc *sc = &data->status->gtk.rsc.all_tsc_rsc;
1606
1607 if (data->find_phase)
1608 return;
1609
1610 switch (key->cipher) {
1611 case WLAN_CIPHER_SUITE_CCMP:
1612 iwl_mvm_set_aes_rx_seq(data->mvm, sc->aes.unicast_rsc,
1613 sta, key);
1614 atomic64_set(&key->tx_pn, le64_to_cpu(sc->aes.tsc.pn));
1615 break;
1616 case WLAN_CIPHER_SUITE_TKIP:
1617 iwl_mvm_tkip_sc_to_seq(&sc->tkip.tsc, &seq);
1618 iwl_mvm_set_tkip_rx_seq(sc->tkip.unicast_rsc, key);
1619 atomic64_set(&key->tx_pn,
1620 (u64)seq.tkip.iv16 |
1621 ((u64)seq.tkip.iv32 << 16));
1622 break;
1623 }
1624
1625 /* that's it for this key */
1626 return;
1627 }
1628
1629 if (data->find_phase) {
1630 data->last_gtk = key;
1631 data->cipher = key->cipher;
1632 return;
1633 }
1634
1635 if (data->status->num_of_gtk_rekeys)
1636 ieee80211_remove_key(key);
1637 else if (data->last_gtk == key)
1638 iwl_mvm_set_key_rx_seq(data->mvm, key, data->status);
1639 }
1640
1641 static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm,
1642 struct ieee80211_vif *vif,
1643 struct iwl_wowlan_status *status)
1644 {
1645 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1646 struct iwl_mvm_d3_gtk_iter_data gtkdata = {
1647 .mvm = mvm,
1648 .status = status,
1649 };
1650 u32 disconnection_reasons =
1651 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1652 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH;
1653
1654 if (!status || !vif->bss_conf.bssid)
1655 return false;
1656
1657 if (le32_to_cpu(status->wakeup_reasons) & disconnection_reasons)
1658 return false;
1659
1660 /* find last GTK that we used initially, if any */
1661 gtkdata.find_phase = true;
1662 ieee80211_iter_keys(mvm->hw, vif,
1663 iwl_mvm_d3_update_keys, &gtkdata);
1664 /* not trying to keep connections with MFP/unhandled ciphers */
1665 if (gtkdata.unhandled_cipher)
1666 return false;
1667 if (!gtkdata.num_keys)
1668 goto out;
1669 if (!gtkdata.last_gtk)
1670 return false;
1671
1672 /*
1673 * invalidate all other GTKs that might still exist and update
1674 * the one that we used
1675 */
1676 gtkdata.find_phase = false;
1677 ieee80211_iter_keys(mvm->hw, vif,
1678 iwl_mvm_d3_update_keys, &gtkdata);
1679
1680 if (status->num_of_gtk_rekeys) {
1681 struct ieee80211_key_conf *key;
1682 struct {
1683 struct ieee80211_key_conf conf;
1684 u8 key[32];
1685 } conf = {
1686 .conf.cipher = gtkdata.cipher,
1687 .conf.keyidx = status->gtk.key_index,
1688 };
1689
1690 switch (gtkdata.cipher) {
1691 case WLAN_CIPHER_SUITE_CCMP:
1692 conf.conf.keylen = WLAN_KEY_LEN_CCMP;
1693 memcpy(conf.conf.key, status->gtk.decrypt_key,
1694 WLAN_KEY_LEN_CCMP);
1695 break;
1696 case WLAN_CIPHER_SUITE_TKIP:
1697 conf.conf.keylen = WLAN_KEY_LEN_TKIP;
1698 memcpy(conf.conf.key, status->gtk.decrypt_key, 16);
1699 /* leave TX MIC key zeroed, we don't use it anyway */
1700 memcpy(conf.conf.key +
1701 NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
1702 status->gtk.tkip_mic_key, 8);
1703 break;
1704 }
1705
1706 key = ieee80211_gtk_rekey_add(vif, &conf.conf);
1707 if (IS_ERR(key))
1708 return false;
1709 iwl_mvm_set_key_rx_seq(mvm, key, status);
1710 }
1711
1712 if (status->num_of_gtk_rekeys) {
1713 __be64 replay_ctr =
1714 cpu_to_be64(le64_to_cpu(status->replay_ctr));
1715 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid,
1716 (void *)&replay_ctr, GFP_KERNEL);
1717 }
1718
1719 out:
1720 mvmvif->seqno_valid = true;
1721 /* +0x10 because the set API expects next-to-use, not last-used */
1722 mvmvif->seqno = le16_to_cpu(status->non_qos_seq_ctr) + 0x10;
1723
1724 return true;
1725 }
1726
1727 static struct iwl_wowlan_status *
1728 iwl_mvm_get_wakeup_status(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1729 {
1730 u32 base = mvm->error_event_table;
1731 struct error_table_start {
1732 /* cf. struct iwl_error_event_table */
1733 u32 valid;
1734 u32 error_id;
1735 } err_info;
1736 struct iwl_host_cmd cmd = {
1737 .id = WOWLAN_GET_STATUSES,
1738 .flags = CMD_WANT_SKB,
1739 };
1740 struct iwl_wowlan_status *status, *fw_status;
1741 int ret, len, status_size;
1742
1743 iwl_trans_read_mem_bytes(mvm->trans, base,
1744 &err_info, sizeof(err_info));
1745
1746 if (err_info.valid) {
1747 IWL_INFO(mvm, "error table is valid (%d) with error (%d)\n",
1748 err_info.valid, err_info.error_id);
1749 if (err_info.error_id == RF_KILL_INDICATOR_FOR_WOWLAN) {
1750 struct cfg80211_wowlan_wakeup wakeup = {
1751 .rfkill_release = true,
1752 };
1753 ieee80211_report_wowlan_wakeup(vif, &wakeup,
1754 GFP_KERNEL);
1755 }
1756 return ERR_PTR(-EIO);
1757 }
1758
1759 /* only for tracing for now */
1760 ret = iwl_mvm_send_cmd_pdu(mvm, OFFLOADS_QUERY_CMD, 0, 0, NULL);
1761 if (ret)
1762 IWL_ERR(mvm, "failed to query offload statistics (%d)\n", ret);
1763
1764 ret = iwl_mvm_send_cmd(mvm, &cmd);
1765 if (ret) {
1766 IWL_ERR(mvm, "failed to query status (%d)\n", ret);
1767 return ERR_PTR(ret);
1768 }
1769
1770 /* RF-kill already asserted again... */
1771 if (!cmd.resp_pkt) {
1772 fw_status = ERR_PTR(-ERFKILL);
1773 goto out_free_resp;
1774 }
1775
1776 status_size = sizeof(*fw_status);
1777
1778 len = iwl_rx_packet_payload_len(cmd.resp_pkt);
1779 if (len < status_size) {
1780 IWL_ERR(mvm, "Invalid WoWLAN status response!\n");
1781 fw_status = ERR_PTR(-EIO);
1782 goto out_free_resp;
1783 }
1784
1785 status = (void *)cmd.resp_pkt->data;
1786 if (len != (status_size +
1787 ALIGN(le32_to_cpu(status->wake_packet_bufsize), 4))) {
1788 IWL_ERR(mvm, "Invalid WoWLAN status response!\n");
1789 fw_status = ERR_PTR(-EIO);
1790 goto out_free_resp;
1791 }
1792
1793 fw_status = kmemdup(status, len, GFP_KERNEL);
1794
1795 out_free_resp:
1796 iwl_free_resp(&cmd);
1797 return fw_status;
1798 }
1799
1800 /* releases the MVM mutex */
1801 static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm,
1802 struct ieee80211_vif *vif)
1803 {
1804 struct iwl_wowlan_status_data status;
1805 struct iwl_wowlan_status *fw_status;
1806 int i;
1807 bool keep;
1808 struct ieee80211_sta *ap_sta;
1809 struct iwl_mvm_sta *mvm_ap_sta;
1810
1811 fw_status = iwl_mvm_get_wakeup_status(mvm, vif);
1812 if (IS_ERR_OR_NULL(fw_status))
1813 goto out_unlock;
1814
1815 status.pattern_number = le16_to_cpu(fw_status->pattern_number);
1816 for (i = 0; i < 8; i++)
1817 status.qos_seq_ctr[i] =
1818 le16_to_cpu(fw_status->qos_seq_ctr[i]);
1819 status.wakeup_reasons = le32_to_cpu(fw_status->wakeup_reasons);
1820 status.wake_packet_length =
1821 le32_to_cpu(fw_status->wake_packet_length);
1822 status.wake_packet_bufsize =
1823 le32_to_cpu(fw_status->wake_packet_bufsize);
1824 status.wake_packet = fw_status->wake_packet;
1825
1826 /* still at hard-coded place 0 for D3 image */
1827 ap_sta = rcu_dereference_protected(
1828 mvm->fw_id_to_mac_id[0],
1829 lockdep_is_held(&mvm->mutex));
1830 if (IS_ERR_OR_NULL(ap_sta))
1831 goto out_free;
1832
1833 mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
1834 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1835 u16 seq = status.qos_seq_ctr[i];
1836 /* firmware stores last-used value, we store next value */
1837 seq += 0x10;
1838 mvm_ap_sta->tid_data[i].seq_number = seq;
1839 }
1840
1841 /* now we have all the data we need, unlock to avoid mac80211 issues */
1842 mutex_unlock(&mvm->mutex);
1843
1844 iwl_mvm_report_wakeup_reasons(mvm, vif, &status);
1845
1846 keep = iwl_mvm_setup_connection_keep(mvm, vif, fw_status);
1847
1848 kfree(fw_status);
1849 return keep;
1850
1851 out_free:
1852 kfree(fw_status);
1853 out_unlock:
1854 mutex_unlock(&mvm->mutex);
1855 return false;
1856 }
1857
1858 void iwl_mvm_d0i3_update_keys(struct iwl_mvm *mvm,
1859 struct ieee80211_vif *vif,
1860 struct iwl_wowlan_status *status)
1861 {
1862 struct iwl_mvm_d3_gtk_iter_data gtkdata = {
1863 .mvm = mvm,
1864 .status = status,
1865 };
1866
1867 /*
1868 * rekey handling requires taking locks that can't be taken now.
1869 * however, d0i3 doesn't offload rekey, so we're fine.
1870 */
1871 if (WARN_ON_ONCE(status->num_of_gtk_rekeys))
1872 return;
1873
1874 /* find last GTK that we used initially, if any */
1875 gtkdata.find_phase = true;
1876 iwl_mvm_iter_d0i3_ap_keys(mvm, vif, iwl_mvm_d3_update_keys, &gtkdata);
1877
1878 gtkdata.find_phase = false;
1879 iwl_mvm_iter_d0i3_ap_keys(mvm, vif, iwl_mvm_d3_update_keys, &gtkdata);
1880 }
1881
1882 struct iwl_mvm_nd_query_results {
1883 u32 matched_profiles;
1884 struct iwl_scan_offload_profile_match matches[IWL_SCAN_MAX_PROFILES];
1885 };
1886
1887 static int
1888 iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm,
1889 struct iwl_mvm_nd_query_results *results)
1890 {
1891 struct iwl_scan_offload_profiles_query *query;
1892 struct iwl_host_cmd cmd = {
1893 .id = SCAN_OFFLOAD_PROFILES_QUERY_CMD,
1894 .flags = CMD_WANT_SKB,
1895 };
1896 int ret, len;
1897
1898 ret = iwl_mvm_send_cmd(mvm, &cmd);
1899 if (ret) {
1900 IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret);
1901 return ret;
1902 }
1903
1904 /* RF-kill already asserted again... */
1905 if (!cmd.resp_pkt) {
1906 ret = -ERFKILL;
1907 goto out_free_resp;
1908 }
1909
1910 len = iwl_rx_packet_payload_len(cmd.resp_pkt);
1911 if (len < sizeof(*query)) {
1912 IWL_ERR(mvm, "Invalid scan offload profiles query response!\n");
1913 ret = -EIO;
1914 goto out_free_resp;
1915 }
1916
1917 query = (void *)cmd.resp_pkt->data;
1918
1919 results->matched_profiles = le32_to_cpu(query->matched_profiles);
1920 memcpy(results->matches, query->matches, sizeof(results->matches));
1921
1922 #ifdef CONFIG_IWLWIFI_DEBUGFS
1923 mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done);
1924 #endif
1925
1926 out_free_resp:
1927 iwl_free_resp(&cmd);
1928 return ret;
1929 }
1930
1931 static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm,
1932 struct ieee80211_vif *vif)
1933 {
1934 struct cfg80211_wowlan_nd_info *net_detect = NULL;
1935 struct cfg80211_wowlan_wakeup wakeup = {
1936 .pattern_idx = -1,
1937 };
1938 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
1939 struct iwl_mvm_nd_query_results query;
1940 struct iwl_wowlan_status *fw_status;
1941 unsigned long matched_profiles;
1942 u32 reasons = 0;
1943 int i, j, n_matches, ret;
1944
1945 fw_status = iwl_mvm_get_wakeup_status(mvm, vif);
1946 if (!IS_ERR_OR_NULL(fw_status)) {
1947 reasons = le32_to_cpu(fw_status->wakeup_reasons);
1948 kfree(fw_status);
1949 }
1950
1951 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
1952 wakeup.rfkill_release = true;
1953
1954 if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS)
1955 goto out;
1956
1957 ret = iwl_mvm_netdetect_query_results(mvm, &query);
1958 if (ret || !query.matched_profiles) {
1959 wakeup_report = NULL;
1960 goto out;
1961 }
1962
1963 matched_profiles = query.matched_profiles;
1964 if (mvm->n_nd_match_sets) {
1965 n_matches = hweight_long(matched_profiles);
1966 } else {
1967 IWL_ERR(mvm, "no net detect match information available\n");
1968 n_matches = 0;
1969 }
1970
1971 net_detect = kzalloc(sizeof(*net_detect) +
1972 (n_matches * sizeof(net_detect->matches[0])),
1973 GFP_KERNEL);
1974 if (!net_detect || !n_matches)
1975 goto out_report_nd;
1976
1977 for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) {
1978 struct iwl_scan_offload_profile_match *fw_match;
1979 struct cfg80211_wowlan_nd_match *match;
1980 int idx, n_channels = 0;
1981
1982 fw_match = &query.matches[i];
1983
1984 for (j = 0; j < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; j++)
1985 n_channels += hweight8(fw_match->matching_channels[j]);
1986
1987 match = kzalloc(sizeof(*match) +
1988 (n_channels * sizeof(*match->channels)),
1989 GFP_KERNEL);
1990 if (!match)
1991 goto out_report_nd;
1992
1993 net_detect->matches[net_detect->n_matches++] = match;
1994
1995 /* We inverted the order of the SSIDs in the scan
1996 * request, so invert the index here.
1997 */
1998 idx = mvm->n_nd_match_sets - i - 1;
1999 match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len;
2000 memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid,
2001 match->ssid.ssid_len);
2002
2003 if (mvm->n_nd_channels < n_channels)
2004 continue;
2005
2006 for (j = 0; j < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; j++)
2007 if (fw_match->matching_channels[j / 8] & (BIT(j % 8)))
2008 match->channels[match->n_channels++] =
2009 mvm->nd_channels[j]->center_freq;
2010 }
2011
2012 out_report_nd:
2013 wakeup.net_detect = net_detect;
2014 out:
2015 iwl_mvm_free_nd(mvm);
2016
2017 mutex_unlock(&mvm->mutex);
2018 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
2019
2020 if (net_detect) {
2021 for (i = 0; i < net_detect->n_matches; i++)
2022 kfree(net_detect->matches[i]);
2023 kfree(net_detect);
2024 }
2025 }
2026
2027 static void iwl_mvm_read_d3_sram(struct iwl_mvm *mvm)
2028 {
2029 #ifdef CONFIG_IWLWIFI_DEBUGFS
2030 const struct fw_img *img = &mvm->fw->img[IWL_UCODE_WOWLAN];
2031 u32 len = img->sec[IWL_UCODE_SECTION_DATA].len;
2032 u32 offs = img->sec[IWL_UCODE_SECTION_DATA].offset;
2033
2034 if (!mvm->store_d3_resume_sram)
2035 return;
2036
2037 if (!mvm->d3_resume_sram) {
2038 mvm->d3_resume_sram = kzalloc(len, GFP_KERNEL);
2039 if (!mvm->d3_resume_sram)
2040 return;
2041 }
2042
2043 iwl_trans_read_mem_bytes(mvm->trans, offs, mvm->d3_resume_sram, len);
2044 #endif
2045 }
2046
2047 static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac,
2048 struct ieee80211_vif *vif)
2049 {
2050 /* skip the one we keep connection on */
2051 if (data == vif)
2052 return;
2053
2054 if (vif->type == NL80211_IFTYPE_STATION)
2055 ieee80211_resume_disconnect(vif);
2056 }
2057
2058 static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test)
2059 {
2060 struct ieee80211_vif *vif = NULL;
2061 int ret = 1;
2062 enum iwl_d3_status d3_status;
2063 bool keep = false;
2064 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
2065 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2066
2067 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
2068 CMD_WAKE_UP_TRANS;
2069
2070 mutex_lock(&mvm->mutex);
2071
2072 /* get the BSS vif pointer again */
2073 vif = iwl_mvm_get_bss_vif(mvm);
2074 if (IS_ERR_OR_NULL(vif))
2075 goto err;
2076
2077 ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, !unified_image);
2078 if (ret)
2079 goto err;
2080
2081 if (d3_status != IWL_D3_STATUS_ALIVE) {
2082 IWL_INFO(mvm, "Device was reset during suspend\n");
2083 goto err;
2084 }
2085
2086 /* query SRAM first in case we want event logging */
2087 iwl_mvm_read_d3_sram(mvm);
2088
2089 /*
2090 * Query the current location and source from the D3 firmware so we
2091 * can play it back when we re-intiailize the D0 firmware
2092 */
2093 iwl_mvm_update_changed_regdom(mvm);
2094
2095 if (mvm->net_detect) {
2096 iwl_mvm_query_netdetect_reasons(mvm, vif);
2097 /* has unlocked the mutex, so skip that */
2098 goto out;
2099 } else {
2100 keep = iwl_mvm_query_wakeup_reasons(mvm, vif);
2101 #ifdef CONFIG_IWLWIFI_DEBUGFS
2102 if (keep)
2103 mvm->keep_vif = vif;
2104 #endif
2105 /* has unlocked the mutex, so skip that */
2106 goto out_iterate;
2107 }
2108
2109 err:
2110 iwl_mvm_free_nd(mvm);
2111 mutex_unlock(&mvm->mutex);
2112
2113 out_iterate:
2114 if (!test)
2115 ieee80211_iterate_active_interfaces_rtnl(mvm->hw,
2116 IEEE80211_IFACE_ITER_NORMAL,
2117 iwl_mvm_d3_disconnect_iter, keep ? vif : NULL);
2118
2119 out:
2120 if (unified_image && !ret) {
2121 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
2122 if (!ret) /* D3 ended successfully - no need to reset device */
2123 return 0;
2124 }
2125
2126 /*
2127 * Reconfigure the device in one of the following cases:
2128 * 1. We are not using a unified image
2129 * 2. We are using a unified image but had an error while exiting D3
2130 */
2131 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
2132 set_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status);
2133 /*
2134 * When switching images we return 1, which causes mac80211
2135 * to do a reconfig with IEEE80211_RECONFIG_TYPE_RESTART.
2136 * This type of reconfig calls iwl_mvm_restart_complete(),
2137 * where we unref the IWL_MVM_REF_UCODE_DOWN, so we need
2138 * to take the reference here.
2139 */
2140 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
2141
2142 return 1;
2143 }
2144
2145 static int iwl_mvm_resume_d3(struct iwl_mvm *mvm)
2146 {
2147 iwl_trans_resume(mvm->trans);
2148
2149 return __iwl_mvm_resume(mvm, false);
2150 }
2151
2152 static int iwl_mvm_resume_d0i3(struct iwl_mvm *mvm)
2153 {
2154 bool exit_now;
2155 enum iwl_d3_status d3_status;
2156 struct iwl_trans *trans = mvm->trans;
2157
2158 iwl_trans_d3_resume(trans, &d3_status, false, false);
2159
2160 /*
2161 * make sure to clear D0I3_DEFER_WAKEUP before
2162 * calling iwl_trans_resume(), which might wait
2163 * for d0i3 exit completion.
2164 */
2165 mutex_lock(&mvm->d0i3_suspend_mutex);
2166 __clear_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags);
2167 exit_now = __test_and_clear_bit(D0I3_PENDING_WAKEUP,
2168 &mvm->d0i3_suspend_flags);
2169 mutex_unlock(&mvm->d0i3_suspend_mutex);
2170 if (exit_now) {
2171 IWL_DEBUG_RPM(mvm, "Run deferred d0i3 exit\n");
2172 _iwl_mvm_exit_d0i3(mvm);
2173 }
2174
2175 iwl_trans_resume(trans);
2176
2177 if (iwl_mvm_enter_d0i3_on_suspend(mvm)) {
2178 int ret = iwl_mvm_exit_d0i3(mvm->hw->priv);
2179
2180 if (ret)
2181 return ret;
2182 /*
2183 * d0i3 exit will be deferred until reconfig_complete.
2184 * make sure there we are out of d0i3.
2185 */
2186 }
2187 return 0;
2188 }
2189
2190 int iwl_mvm_resume(struct ieee80211_hw *hw)
2191 {
2192 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2193 int ret;
2194
2195 if (mvm->trans->system_pm_mode == IWL_PLAT_PM_MODE_D0I3)
2196 ret = iwl_mvm_resume_d0i3(mvm);
2197 else
2198 ret = iwl_mvm_resume_d3(mvm);
2199
2200 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
2201
2202 return ret;
2203 }
2204
2205 void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled)
2206 {
2207 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2208
2209 device_set_wakeup_enable(mvm->trans->dev, enabled);
2210 }
2211
2212 #ifdef CONFIG_IWLWIFI_DEBUGFS
2213 static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file)
2214 {
2215 struct iwl_mvm *mvm = inode->i_private;
2216 int err;
2217
2218 if (mvm->d3_test_active)
2219 return -EBUSY;
2220
2221 file->private_data = inode->i_private;
2222
2223 ieee80211_stop_queues(mvm->hw);
2224 synchronize_net();
2225
2226 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_D3;
2227
2228 /* start pseudo D3 */
2229 rtnl_lock();
2230 err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true);
2231 rtnl_unlock();
2232 if (err > 0)
2233 err = -EINVAL;
2234 if (err) {
2235 ieee80211_wake_queues(mvm->hw);
2236 return err;
2237 }
2238 mvm->d3_test_active = true;
2239 mvm->keep_vif = NULL;
2240 return 0;
2241 }
2242
2243 static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf,
2244 size_t count, loff_t *ppos)
2245 {
2246 struct iwl_mvm *mvm = file->private_data;
2247 u32 pme_asserted;
2248
2249 while (true) {
2250 /* read pme_ptr if available */
2251 if (mvm->d3_test_pme_ptr) {
2252 pme_asserted = iwl_trans_read_mem32(mvm->trans,
2253 mvm->d3_test_pme_ptr);
2254 if (pme_asserted)
2255 break;
2256 }
2257
2258 if (msleep_interruptible(100))
2259 break;
2260 }
2261
2262 return 0;
2263 }
2264
2265 static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac,
2266 struct ieee80211_vif *vif)
2267 {
2268 /* skip the one we keep connection on */
2269 if (_data == vif)
2270 return;
2271
2272 if (vif->type == NL80211_IFTYPE_STATION)
2273 ieee80211_connection_loss(vif);
2274 }
2275
2276 static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file)
2277 {
2278 struct iwl_mvm *mvm = inode->i_private;
2279 int remaining_time = 10;
2280
2281 mvm->d3_test_active = false;
2282
2283 rtnl_lock();
2284 __iwl_mvm_resume(mvm, true);
2285 rtnl_unlock();
2286
2287 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
2288
2289 iwl_abort_notification_waits(&mvm->notif_wait);
2290 ieee80211_restart_hw(mvm->hw);
2291
2292 /* wait for restart and disconnect all interfaces */
2293 while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2294 remaining_time > 0) {
2295 remaining_time--;
2296 msleep(1000);
2297 }
2298
2299 if (remaining_time == 0)
2300 IWL_ERR(mvm, "Timed out waiting for HW restart to finish!\n");
2301
2302 ieee80211_iterate_active_interfaces_atomic(
2303 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
2304 iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif);
2305
2306 ieee80211_wake_queues(mvm->hw);
2307
2308 return 0;
2309 }
2310
2311 const struct file_operations iwl_dbgfs_d3_test_ops = {
2312 .llseek = no_llseek,
2313 .open = iwl_mvm_d3_test_open,
2314 .read = iwl_mvm_d3_test_read,
2315 .release = iwl_mvm_d3_test_release,
2316 };
2317 #endif
Linux kernel - Deliverables
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