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iwlwifi: mvm: support LAR updates from BIOS
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / mvm / d3.c
CommitLineData
8ca151b5
JB		 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 *
51368bf7 8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
8b4139dc 9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
8ca151b5
JB		 10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of version 2 of the GNU General Public License as
13 * published by the Free Software Foundation.
14 *
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
23 * USA
24 *
25 * The full GNU General Public License is included in this distribution
410dc5aa 26 * in the file called COPYING.
8ca151b5
JB		 27 *
28 * Contact Information:
29 * Intel Linux Wireless <ilw@linux.intel.com>
30 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
31 *
32 * BSD LICENSE
33 *
51368bf7 34 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
8b4139dc 35 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
8ca151b5
JB		 36 * All rights reserved.
37 *
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
40 * are met:
41 *
42 * * Redistributions of source code must retain the above copyright
43 * notice, this list of conditions and the following disclaimer.
44 * * Redistributions in binary form must reproduce the above copyright
45 * notice, this list of conditions and the following disclaimer in
46 * the documentation and/or other materials provided with the
47 * distribution.
48 * * Neither the name Intel Corporation nor the names of its
49 * contributors may be used to endorse or promote products derived
50 * from this software without specific prior written permission.
51 *
52 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
53 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
54 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
55 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
56 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
57 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
58 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
59 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
60 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
61 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
62 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
63 *
64 *****************************************************************************/
65
f444eb10 66#include <linux/etherdevice.h>
f0c2646a 67#include <linux/ip.h>
debff618 68#include <linux/fs.h>
8ca151b5
JB		 69#include <net/cfg80211.h>
70#include <net/ipv6.h>
f0c2646a 71#include <net/tcp.h>
f7fc5989 72#include <net/addrconf.h>
8ca151b5
JB		 73#include "iwl-modparams.h"
74#include "fw-api.h"
75#include "mvm.h"
76
77void iwl_mvm_set_rekey_data(struct ieee80211_hw *hw,
78 struct ieee80211_vif *vif,
79 struct cfg80211_gtk_rekey_data *data)
80{
81 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
82 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
83
84 if (iwlwifi_mod_params.sw_crypto)
85 return;
86
87 mutex_lock(&mvm->mutex);
88
89 memcpy(mvmvif->rekey_data.kek, data->kek, NL80211_KEK_LEN);
90 memcpy(mvmvif->rekey_data.kck, data->kck, NL80211_KCK_LEN);
91 mvmvif->rekey_data.replay_ctr =
92 cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr));
93 mvmvif->rekey_data.valid = true;
94
95 mutex_unlock(&mvm->mutex);
96}
97
98#if IS_ENABLED(CONFIG_IPV6)
99void iwl_mvm_ipv6_addr_change(struct ieee80211_hw *hw,
100 struct ieee80211_vif *vif,
101 struct inet6_dev *idev)
102{
103 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
104 struct inet6_ifaddr *ifa;
105 int idx = 0;
106
a3777e0f 107 read_lock_bh(&idev->lock);
8ca151b5
JB		 108 list_for_each_entry(ifa, &idev->addr_list, if_list) {
109 mvmvif->target_ipv6_addrs[idx] = ifa->addr;
110 idx++;
5369d6c1 111 if (idx >= IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_MAX)
8ca151b5
JB		 112 break;
113 }
a3777e0f 114 read_unlock_bh(&idev->lock);
8ca151b5
JB		 115
116 mvmvif->num_target_ipv6_addrs = idx;
117}
118#endif
119
120void iwl_mvm_set_default_unicast_key(struct ieee80211_hw *hw,
121 struct ieee80211_vif *vif, int idx)
122{
123 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
124
125 mvmvif->tx_key_idx = idx;
126}
127
128static void iwl_mvm_convert_p1k(u16 *p1k, __le16 *out)
129{
130 int i;
131
132 for (i = 0; i < IWL_P1K_SIZE; i++)
133 out[i] = cpu_to_le16(p1k[i]);
134}
135
136struct wowlan_key_data {
137 struct iwl_wowlan_rsc_tsc_params_cmd *rsc_tsc;
138 struct iwl_wowlan_tkip_params_cmd *tkip;
139 bool error, use_rsc_tsc, use_tkip;
5312e54d 140 int wep_key_idx;
8ca151b5
JB		 141};
142
143static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw,
144 struct ieee80211_vif *vif,
145 struct ieee80211_sta *sta,
146 struct ieee80211_key_conf *key,
147 void *_data)
148{
149 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
150 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
151 struct wowlan_key_data *data = _data;
152 struct aes_sc *aes_sc, *aes_tx_sc = NULL;
153 struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
154 struct iwl_p1k_cache *rx_p1ks;
155 u8 *rx_mic_key;
156 struct ieee80211_key_seq seq;
157 u32 cur_rx_iv32 = 0;
158 u16 p1k[IWL_P1K_SIZE];
159 int ret, i;
160
161 mutex_lock(&mvm->mutex);
162
163 switch (key->cipher) {
164 case WLAN_CIPHER_SUITE_WEP40:
165 case WLAN_CIPHER_SUITE_WEP104: { /* hack it for now */
166 struct {
167 struct iwl_mvm_wep_key_cmd wep_key_cmd;
168 struct iwl_mvm_wep_key wep_key;
169 } __packed wkc = {
170 .wep_key_cmd.mac_id_n_color =
171 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
172 mvmvif->color)),
173 .wep_key_cmd.num_keys = 1,
174 /* firmware sets STA_KEY_FLG_WEP_13BYTES */
175 .wep_key_cmd.decryption_type = STA_KEY_FLG_WEP,
176 .wep_key.key_index = key->keyidx,
177 .wep_key.key_size = key->keylen,
178 };
179
180 /*
181 * This will fail -- the key functions don't set support
182 * pairwise WEP keys. However, that's better than silently
183 * failing WoWLAN. Or maybe not?
184 */
185 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
186 break;
187
188 memcpy(&wkc.wep_key.key[3], key->key, key->keylen);
189 if (key->keyidx == mvmvif->tx_key_idx) {
190 /* TX key must be at offset 0 */
191 wkc.wep_key.key_offset = 0;
192 } else {
193 /* others start at 1 */
5312e54d
JB		 194 data->wep_key_idx++;
195 wkc.wep_key.key_offset = data->wep_key_idx;
8ca151b5
JB		 196 }
197
a1022927 198 ret = iwl_mvm_send_cmd_pdu(mvm, WEP_KEY, 0, sizeof(wkc), &wkc);
8ca151b5
JB		 199 data->error = ret != 0;
200
f444eb10
JB		 201 mvm->ptk_ivlen = key->iv_len;
202 mvm->ptk_icvlen = key->icv_len;
203 mvm->gtk_ivlen = key->iv_len;
204 mvm->gtk_icvlen = key->icv_len;
205
8ca151b5
JB		 206 /* don't upload key again */
207 goto out_unlock;
208 }
209 default:
210 data->error = true;
211 goto out_unlock;
212 case WLAN_CIPHER_SUITE_AES_CMAC:
213 /*
214 * Ignore CMAC keys -- the WoWLAN firmware doesn't support them
215 * but we also shouldn't abort suspend due to that. It does have
216 * support for the IGTK key renewal, but doesn't really use the
217 * IGTK for anything. This means we could spuriously wake up or
218 * be deauthenticated, but that was considered acceptable.
219 */
220 goto out_unlock;
221 case WLAN_CIPHER_SUITE_TKIP:
222 if (sta) {
223 tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
224 tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
225
226 rx_p1ks = data->tkip->rx_uni;
227
228 ieee80211_get_key_tx_seq(key, &seq);
229 tkip_tx_sc->iv16 = cpu_to_le16(seq.tkip.iv16);
230 tkip_tx_sc->iv32 = cpu_to_le32(seq.tkip.iv32);
231
232 ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k);
233 iwl_mvm_convert_p1k(p1k, data->tkip->tx.p1k);
234
235 memcpy(data->tkip->mic_keys.tx,
236 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
237 IWL_MIC_KEY_SIZE);
238
239 rx_mic_key = data->tkip->mic_keys.rx_unicast;
240 } else {
241 tkip_sc =
242 data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc;
243 rx_p1ks = data->tkip->rx_multi;
244 rx_mic_key = data->tkip->mic_keys.rx_mcast;
245 }
246
247 /*
248 * For non-QoS this relies on the fact that both the uCode and
249 * mac80211 use TID 0 (as they need to to avoid replay attacks)
250 * for checking the IV in the frames.
251 */
252 for (i = 0; i < IWL_NUM_RSC; i++) {
253 ieee80211_get_key_rx_seq(key, i, &seq);
254 tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
255 tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
256 /* wrapping isn't allowed, AP must rekey */
257 if (seq.tkip.iv32 > cur_rx_iv32)
258 cur_rx_iv32 = seq.tkip.iv32;
259 }
260
261 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
262 cur_rx_iv32, p1k);
263 iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k);
264 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
265 cur_rx_iv32 + 1, p1k);
266 iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k);
267
268 memcpy(rx_mic_key,
269 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
270 IWL_MIC_KEY_SIZE);
271
272 data->use_tkip = true;
273 data->use_rsc_tsc = true;
274 break;
275 case WLAN_CIPHER_SUITE_CCMP:
276 if (sta) {
277 u8 *pn = seq.ccmp.pn;
278
279 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
280 aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc;
281
282 ieee80211_get_key_tx_seq(key, &seq);
283 aes_tx_sc->pn = cpu_to_le64((u64)pn[5] |
284 ((u64)pn[4] << 8) |
285 ((u64)pn[3] << 16) |
286 ((u64)pn[2] << 24) |
287 ((u64)pn[1] << 32) |
288 ((u64)pn[0] << 40));
289 } else {
290 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
291 }
292
293 /*
294 * For non-QoS this relies on the fact that both the uCode and
295 * mac80211 use TID 0 for checking the IV in the frames.
296 */
297 for (i = 0; i < IWL_NUM_RSC; i++) {
298 u8 *pn = seq.ccmp.pn;
299
300 ieee80211_get_key_rx_seq(key, i, &seq);
301 aes_sc->pn = cpu_to_le64((u64)pn[5] |
302 ((u64)pn[4] << 8) |
303 ((u64)pn[3] << 16) |
304 ((u64)pn[2] << 24) |
305 ((u64)pn[1] << 32) |
306 ((u64)pn[0] << 40));
307 }
308 data->use_rsc_tsc = true;
309 break;
310 }
311
312 /*
313 * The D3 firmware hardcodes the key offset 0 as the key it uses
314 * to transmit packets to the AP, i.e. the PTK.
315 */
316 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
317 key->hw_key_idx = 0;
f444eb10
JB		 318 mvm->ptk_ivlen = key->iv_len;
319 mvm->ptk_icvlen = key->icv_len;
8ca151b5 320 } else {
5312e54d
JB		 321 /*
322 * firmware only supports TSC/RSC for a single key,
323 * so if there are multiple keep overwriting them
324 * with new ones -- this relies on mac80211 doing
325 * list_add_tail().
326 */
327 key->hw_key_idx = 1;
f444eb10
JB		 328 mvm->gtk_ivlen = key->iv_len;
329 mvm->gtk_icvlen = key->icv_len;
8ca151b5
JB		 330 }
331
332 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, true);
333 data->error = ret != 0;
334out_unlock:
335 mutex_unlock(&mvm->mutex);
336}
337
338static int iwl_mvm_send_patterns(struct iwl_mvm *mvm,
339 struct cfg80211_wowlan *wowlan)
340{
341 struct iwl_wowlan_patterns_cmd *pattern_cmd;
342 struct iwl_host_cmd cmd = {
343 .id = WOWLAN_PATTERNS,
344 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
8ca151b5
JB		 345 };
346 int i, err;
347
348 if (!wowlan->n_patterns)
349 return 0;
350
351 cmd.len[0] = sizeof(*pattern_cmd) +
352 wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern);
353
354 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
355 if (!pattern_cmd)
356 return -ENOMEM;
357
358 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
359
360 for (i = 0; i < wowlan->n_patterns; i++) {
361 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
362
363 memcpy(&pattern_cmd->patterns[i].mask,
364 wowlan->patterns[i].mask, mask_len);
365 memcpy(&pattern_cmd->patterns[i].pattern,
366 wowlan->patterns[i].pattern,
367 wowlan->patterns[i].pattern_len);
368 pattern_cmd->patterns[i].mask_size = mask_len;
369 pattern_cmd->patterns[i].pattern_size =
370 wowlan->patterns[i].pattern_len;
371 }
372
373 cmd.data[0] = pattern_cmd;
374 err = iwl_mvm_send_cmd(mvm, &cmd);
375 kfree(pattern_cmd);
376 return err;
377}
378
f0c2646a
JB		 379enum iwl_mvm_tcp_packet_type {
380 MVM_TCP_TX_SYN,
381 MVM_TCP_RX_SYNACK,
382 MVM_TCP_TX_DATA,
383 MVM_TCP_RX_ACK,
384 MVM_TCP_RX_WAKE,
385 MVM_TCP_TX_FIN,
386};
387
388static __le16 pseudo_hdr_check(int len, __be32 saddr, __be32 daddr)
389{
390 __sum16 check = tcp_v4_check(len, saddr, daddr, 0);
391 return cpu_to_le16(be16_to_cpu((__force __be16)check));
392}
393
b002c7e1 394static void iwl_mvm_build_tcp_packet(struct ieee80211_vif *vif,
f0c2646a
JB		 395 struct cfg80211_wowlan_tcp *tcp,
396 void *_pkt, u8 *mask,
397 __le16 *pseudo_hdr_csum,
398 enum iwl_mvm_tcp_packet_type ptype)
399{
400 struct {
401 struct ethhdr eth;
402 struct iphdr ip;
403 struct tcphdr tcp;
404 u8 data[];
405 } __packed *pkt = _pkt;
406 u16 ip_tot_len = sizeof(struct iphdr) + sizeof(struct tcphdr);
407 int i;
408
409 pkt->eth.h_proto = cpu_to_be16(ETH_P_IP),
410 pkt->ip.version = 4;
411 pkt->ip.ihl = 5;
412 pkt->ip.protocol = IPPROTO_TCP;
413
414 switch (ptype) {
415 case MVM_TCP_TX_SYN:
416 case MVM_TCP_TX_DATA:
417 case MVM_TCP_TX_FIN:
418 memcpy(pkt->eth.h_dest, tcp->dst_mac, ETH_ALEN);
419 memcpy(pkt->eth.h_source, vif->addr, ETH_ALEN);
420 pkt->ip.ttl = 128;
421 pkt->ip.saddr = tcp->src;
422 pkt->ip.daddr = tcp->dst;
423 pkt->tcp.source = cpu_to_be16(tcp->src_port);
424 pkt->tcp.dest = cpu_to_be16(tcp->dst_port);
425 /* overwritten for TX SYN later */
426 pkt->tcp.doff = sizeof(struct tcphdr) / 4;
427 pkt->tcp.window = cpu_to_be16(65000);
428 break;
429 case MVM_TCP_RX_SYNACK:
430 case MVM_TCP_RX_ACK:
431 case MVM_TCP_RX_WAKE:
432 memcpy(pkt->eth.h_dest, vif->addr, ETH_ALEN);
433 memcpy(pkt->eth.h_source, tcp->dst_mac, ETH_ALEN);
434 pkt->ip.saddr = tcp->dst;
435 pkt->ip.daddr = tcp->src;
436 pkt->tcp.source = cpu_to_be16(tcp->dst_port);
437 pkt->tcp.dest = cpu_to_be16(tcp->src_port);
438 break;
439 default:
440 WARN_ON(1);
441 return;
442 }
443
444 switch (ptype) {
445 case MVM_TCP_TX_SYN:
446 /* firmware assumes 8 option bytes - 8 NOPs for now */
447 memset(pkt->data, 0x01, 8);
448 ip_tot_len += 8;
449 pkt->tcp.doff = (sizeof(struct tcphdr) + 8) / 4;
450 pkt->tcp.syn = 1;
451 break;
452 case MVM_TCP_TX_DATA:
453 ip_tot_len += tcp->payload_len;
454 memcpy(pkt->data, tcp->payload, tcp->payload_len);
455 pkt->tcp.psh = 1;
456 pkt->tcp.ack = 1;
457 break;
458 case MVM_TCP_TX_FIN:
459 pkt->tcp.fin = 1;
460 pkt->tcp.ack = 1;
461 break;
462 case MVM_TCP_RX_SYNACK:
463 pkt->tcp.syn = 1;
464 pkt->tcp.ack = 1;
465 break;
466 case MVM_TCP_RX_ACK:
467 pkt->tcp.ack = 1;
468 break;
469 case MVM_TCP_RX_WAKE:
470 ip_tot_len += tcp->wake_len;
471 pkt->tcp.psh = 1;
472 pkt->tcp.ack = 1;
473 memcpy(pkt->data, tcp->wake_data, tcp->wake_len);
474 break;
475 }
476
477 switch (ptype) {
478 case MVM_TCP_TX_SYN:
479 case MVM_TCP_TX_DATA:
480 case MVM_TCP_TX_FIN:
481 pkt->ip.tot_len = cpu_to_be16(ip_tot_len);
482 pkt->ip.check = ip_fast_csum(&pkt->ip, pkt->ip.ihl);
483 break;
484 case MVM_TCP_RX_WAKE:
485 for (i = 0; i < DIV_ROUND_UP(tcp->wake_len, 8); i++) {
486 u8 tmp = tcp->wake_mask[i];
487 mask[i + 6] |= tmp << 6;
488 if (i + 1 < DIV_ROUND_UP(tcp->wake_len, 8))
489 mask[i + 7] = tmp >> 2;
490 }
491 /* fall through for ethernet/IP/TCP headers mask */
492 case MVM_TCP_RX_SYNACK:
493 case MVM_TCP_RX_ACK:
494 mask[0] = 0xff; /* match ethernet */
495 /*
496 * match ethernet, ip.version, ip.ihl
497 * the ip.ihl half byte is really masked out by firmware
498 */
499 mask[1] = 0x7f;
500 mask[2] = 0x80; /* match ip.protocol */
501 mask[3] = 0xfc; /* match ip.saddr, ip.daddr */
502 mask[4] = 0x3f; /* match ip.daddr, tcp.source, tcp.dest */
503 mask[5] = 0x80; /* match tcp flags */
504 /* leave rest (0 or set for MVM_TCP_RX_WAKE) */
505 break;
506 };
507
508 *pseudo_hdr_csum = pseudo_hdr_check(ip_tot_len - sizeof(struct iphdr),
509 pkt->ip.saddr, pkt->ip.daddr);
510}
511
512static int iwl_mvm_send_remote_wake_cfg(struct iwl_mvm *mvm,
513 struct ieee80211_vif *vif,
514 struct cfg80211_wowlan_tcp *tcp)
515{
516 struct iwl_wowlan_remote_wake_config *cfg;
517 struct iwl_host_cmd cmd = {
518 .id = REMOTE_WAKE_CONFIG_CMD,
519 .len = { sizeof(*cfg), },
520 .dataflags = { IWL_HCMD_DFL_NOCOPY, },
f0c2646a
JB		 521 };
522 int ret;
523
524 if (!tcp)
525 return 0;
526
527 cfg = kzalloc(sizeof(*cfg), GFP_KERNEL);
528 if (!cfg)
529 return -ENOMEM;
530 cmd.data[0] = cfg;
531
532 cfg->max_syn_retries = 10;
533 cfg->max_data_retries = 10;
534 cfg->tcp_syn_ack_timeout = 1; /* seconds */
535 cfg->tcp_ack_timeout = 1; /* seconds */
536
537 /* SYN (TX) */
538 iwl_mvm_build_tcp_packet(
b002c7e1 539 vif, tcp, cfg->syn_tx.data, NULL,
f0c2646a
JB		 540 &cfg->syn_tx.info.tcp_pseudo_header_checksum,
541 MVM_TCP_TX_SYN);
542 cfg->syn_tx.info.tcp_payload_length = 0;
543
544 /* SYN/ACK (RX) */
545 iwl_mvm_build_tcp_packet(
b002c7e1 546 vif, tcp, cfg->synack_rx.data, cfg->synack_rx.rx_mask,
f0c2646a
JB		 547 &cfg->synack_rx.info.tcp_pseudo_header_checksum,
548 MVM_TCP_RX_SYNACK);
549 cfg->synack_rx.info.tcp_payload_length = 0;
550
551 /* KEEPALIVE/ACK (TX) */
552 iwl_mvm_build_tcp_packet(
b002c7e1 553 vif, tcp, cfg->keepalive_tx.data, NULL,
f0c2646a
JB		 554 &cfg->keepalive_tx.info.tcp_pseudo_header_checksum,
555 MVM_TCP_TX_DATA);
556 cfg->keepalive_tx.info.tcp_payload_length =
557 cpu_to_le16(tcp->payload_len);
558 cfg->sequence_number_offset = tcp->payload_seq.offset;
559 /* length must be 0..4, the field is little endian */
560 cfg->sequence_number_length = tcp->payload_seq.len;
561 cfg->initial_sequence_number = cpu_to_le32(tcp->payload_seq.start);
562 cfg->keepalive_interval = cpu_to_le16(tcp->data_interval);
563 if (tcp->payload_tok.len) {
564 cfg->token_offset = tcp->payload_tok.offset;
565 cfg->token_length = tcp->payload_tok.len;
566 cfg->num_tokens =
567 cpu_to_le16(tcp->tokens_size % tcp->payload_tok.len);
568 memcpy(cfg->tokens, tcp->payload_tok.token_stream,
569 tcp->tokens_size);
570 } else {
571 /* set tokens to max value to almost never run out */
572 cfg->num_tokens = cpu_to_le16(65535);
573 }
574
575 /* ACK (RX) */
576 iwl_mvm_build_tcp_packet(
b002c7e1 577 vif, tcp, cfg->keepalive_ack_rx.data,
f0c2646a
JB		 578 cfg->keepalive_ack_rx.rx_mask,
579 &cfg->keepalive_ack_rx.info.tcp_pseudo_header_checksum,
580 MVM_TCP_RX_ACK);
581 cfg->keepalive_ack_rx.info.tcp_payload_length = 0;
582
583 /* WAKEUP (RX) */
584 iwl_mvm_build_tcp_packet(
b002c7e1 585 vif, tcp, cfg->wake_rx.data, cfg->wake_rx.rx_mask,
f0c2646a
JB		 586 &cfg->wake_rx.info.tcp_pseudo_header_checksum,
587 MVM_TCP_RX_WAKE);
588 cfg->wake_rx.info.tcp_payload_length =
589 cpu_to_le16(tcp->wake_len);
590
591 /* FIN */
592 iwl_mvm_build_tcp_packet(
b002c7e1 593 vif, tcp, cfg->fin_tx.data, NULL,
f0c2646a
JB		 594 &cfg->fin_tx.info.tcp_pseudo_header_checksum,
595 MVM_TCP_TX_FIN);
596 cfg->fin_tx.info.tcp_payload_length = 0;
597
598 ret = iwl_mvm_send_cmd(mvm, &cmd);
599 kfree(cfg);
600
601 return ret;
602}
603
8ca151b5
JB		 604static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
605 struct ieee80211_sta *ap_sta)
606{
607 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
608 struct ieee80211_chanctx_conf *ctx;
609 u8 chains_static, chains_dynamic;
610 struct cfg80211_chan_def chandef;
611 int ret, i;
612 struct iwl_binding_cmd binding_cmd = {};
613 struct iwl_time_quota_cmd quota_cmd = {};
614 u32 status;
615
616 /* add back the PHY */
617 if (WARN_ON(!mvmvif->phy_ctxt))
618 return -EINVAL;
619
620 rcu_read_lock();
621 ctx = rcu_dereference(vif->chanctx_conf);
622 if (WARN_ON(!ctx)) {
623 rcu_read_unlock();
624 return -EINVAL;
625 }
626 chandef = ctx->def;
627 chains_static = ctx->rx_chains_static;
628 chains_dynamic = ctx->rx_chains_dynamic;
629 rcu_read_unlock();
630
631 ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt, &chandef,
632 chains_static, chains_dynamic);
633 if (ret)
634 return ret;
635
636 /* add back the MAC */
637 mvmvif->uploaded = false;
638
639 if (WARN_ON(!vif->bss_conf.assoc))
640 return -EINVAL;
bca49d9a 641
8ca151b5 642 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
8ca151b5
JB		 643 if (ret)
644 return ret;
645
646 /* add back binding - XXX refactor? */
647 binding_cmd.id_and_color =
648 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
649 mvmvif->phy_ctxt->color));
650 binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD);
651 binding_cmd.phy =
652 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
653 mvmvif->phy_ctxt->color));
654 binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
655 mvmvif->color));
656 for (i = 1; i < MAX_MACS_IN_BINDING; i++)
657 binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID);
658
659 status = 0;
660 ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD,
661 sizeof(binding_cmd), &binding_cmd,
662 &status);
663 if (ret) {
664 IWL_ERR(mvm, "Failed to add binding: %d\n", ret);
665 return ret;
666 }
667
668 if (status) {
669 IWL_ERR(mvm, "Binding command failed: %u\n", status);
670 return -EIO;
671 }
672
7a453973 673 ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false);
8ca151b5
JB		 674 if (ret)
675 return ret;
676 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], ap_sta);
677
3dfd3a97 678 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
8ca151b5
JB		 679 if (ret)
680 return ret;
681
682 /* and some quota */
683 quota_cmd.quotas[0].id_and_color =
684 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
685 mvmvif->phy_ctxt->color));
9a3daf82
EG		 686 quota_cmd.quotas[0].quota = cpu_to_le32(IWL_MVM_MAX_QUOTA);
687 quota_cmd.quotas[0].max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA);
8ca151b5
JB		 688
689 for (i = 1; i < MAX_BINDINGS; i++)
690 quota_cmd.quotas[i].id_and_color = cpu_to_le32(FW_CTXT_INVALID);
691
a1022927 692 ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0,
8ca151b5
JB		 693 sizeof(quota_cmd), &quota_cmd);
694 if (ret)
695 IWL_ERR(mvm, "Failed to send quota: %d\n", ret);
696
697 return 0;
698}
699
4ac6cb59
JB		 700static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm,
701 struct ieee80211_vif *vif)
702{
6d9d32b8
JB		 703 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
704 struct iwl_nonqos_seq_query_cmd query_cmd = {
705 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET),
706 .mac_id_n_color =
707 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
708 mvmvif->color)),
709 };
4ac6cb59
JB		 710 struct iwl_host_cmd cmd = {
711 .id = NON_QOS_TX_COUNTER_CMD,
a1022927 712 .flags = CMD_WANT_SKB,
4ac6cb59
JB		 713 };
714 int err;
715 u32 size;
716
3afec639
EG		 717 cmd.data[0] = &query_cmd;
718 cmd.len[0] = sizeof(query_cmd);
6d9d32b8 719
4ac6cb59
JB		 720 err = iwl_mvm_send_cmd(mvm, &cmd);
721 if (err)
722 return err;
723
65b30348 724 size = iwl_rx_packet_payload_len(cmd.resp_pkt);
6d9d32b8 725 if (size < sizeof(__le16)) {
4ac6cb59 726 err = -EINVAL;
6d9d32b8
JB		 727 } else {
728 err = le16_to_cpup((__le16 *)cmd.resp_pkt->data);
3afec639
EG		 729 /* firmware returns next, not last-used seqno */
730 err = (u16) (err - 0x10);
6d9d32b8 731 }
4ac6cb59
JB		 732
733 iwl_free_resp(&cmd);
734 return err;
735}
736
6d9d32b8
JB		 737void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
738{
739 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
740 struct iwl_nonqos_seq_query_cmd query_cmd = {
741 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET),
742 .mac_id_n_color =
743 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
744 mvmvif->color)),
745 .value = cpu_to_le16(mvmvif->seqno),
746 };
747
748 /* return if called during restart, not resume from D3 */
749 if (!mvmvif->seqno_valid)
750 return;
751
752 mvmvif->seqno_valid = false;
753
a1022927 754 if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0,
6d9d32b8
JB		 755 sizeof(query_cmd), &query_cmd))
756 IWL_ERR(mvm, "failed to set non-QoS seqno\n");
757}
758
671b5820
LC		 759static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm)
760{
761 iwl_mvm_cancel_scan(mvm);
762
763 iwl_trans_stop_device(mvm->trans);
764
765 /*
766 * Set the HW restart bit -- this is mostly true as we're
767 * going to load new firmware and reprogram that, though
768 * the reprogramming is going to be manual to avoid adding
769 * all the MACs that aren't support.
770 * We don't have to clear up everything though because the
771 * reprogramming is manual. When we resume, we'll actually
772 * go through a proper restart sequence again to switch
773 * back to the runtime firmware image.
774 */
775 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
776
777 /* We reprogram keys and shouldn't allocate new key indices */
778 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
779
780 mvm->ptk_ivlen = 0;
781 mvm->ptk_icvlen = 0;
782 mvm->ptk_ivlen = 0;
783 mvm->ptk_icvlen = 0;
784
785 return iwl_mvm_load_d3_fw(mvm);
786}
787
671b5820
LC		 788static int
789iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm,
790 struct cfg80211_wowlan *wowlan,
c8b06a99 791 struct iwl_wowlan_config_cmd *wowlan_config_cmd,
671b5820
LC		 792 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
793 struct ieee80211_sta *ap_sta)
8ca151b5 794{
1a95c8df 795 int ret;
9d8ce6af 796 struct iwl_mvm_sta *mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
8ca151b5 797
c8b06a99 798 /* TODO: wowlan_config_cmd->wowlan_ba_teardown_tids */
8ca151b5 799
c8b06a99 800 wowlan_config_cmd->is_11n_connection =
1a95c8df 801 ap_sta->ht_cap.ht_supported;
8ca151b5 802
4ac6cb59
JB		 803 /* Query the last used seqno and set it */
804 ret = iwl_mvm_get_last_nonqos_seq(mvm, vif);
805 if (ret < 0)
671b5820 806 return ret;
8ca151b5 807
c8b06a99 808 wowlan_config_cmd->non_qos_seq = cpu_to_le16(ret);
671b5820 809
c8b06a99 810 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, wowlan_config_cmd);
8ca151b5
JB		 811
812 if (wowlan->disconnect)
c8b06a99 813 wowlan_config_cmd->wakeup_filter |=
8ca151b5
JB		 814 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
815 IWL_WOWLAN_WAKEUP_LINK_CHANGE);
816 if (wowlan->magic_pkt)
c8b06a99 817 wowlan_config_cmd->wakeup_filter |=
8ca151b5
JB		 818 cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET);
819 if (wowlan->gtk_rekey_failure)
c8b06a99 820 wowlan_config_cmd->wakeup_filter |=
8ca151b5
JB		 821 cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
822 if (wowlan->eap_identity_req)
c8b06a99 823 wowlan_config_cmd->wakeup_filter |=
8ca151b5
JB		 824 cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ);
825 if (wowlan->four_way_handshake)
c8b06a99 826 wowlan_config_cmd->wakeup_filter |=
8ca151b5
JB		 827 cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
828 if (wowlan->n_patterns)
c8b06a99 829 wowlan_config_cmd->wakeup_filter |=
8ca151b5
JB		 830 cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH);
831
832 if (wowlan->rfkill_release)
c8b06a99 833 wowlan_config_cmd->wakeup_filter |=
8ca151b5
JB		 834 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
835
f0c2646a
JB		 836 if (wowlan->tcp) {
837 /*
6039f3e1
JB		 838 * Set the "link change" (really "link lost") flag as well
839 * since that implies losing the TCP connection.
f0c2646a 840 */
c8b06a99 841 wowlan_config_cmd->wakeup_filter |=
f0c2646a
JB		 842 cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS |
843 IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE |
844 IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET |
845 IWL_WOWLAN_WAKEUP_LINK_CHANGE);
846 }
847
671b5820
LC		 848 return 0;
849}
f444eb10 850
671b5820
LC		 851static int
852iwl_mvm_wowlan_config(struct iwl_mvm *mvm,
853 struct cfg80211_wowlan *wowlan,
c8b06a99 854 struct iwl_wowlan_config_cmd *wowlan_config_cmd,
671b5820
LC		 855 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
856 struct ieee80211_sta *ap_sta)
857{
858 struct iwl_wowlan_kek_kck_material_cmd kek_kck_cmd = {};
859 struct iwl_wowlan_tkip_params_cmd tkip_cmd = {};
860 struct wowlan_key_data key_data = {
861 .use_rsc_tsc = false,
862 .tkip = &tkip_cmd,
863 .use_tkip = false,
864 };
865 int ret;
8ca151b5 866
3acc952b
LC		 867 ret = iwl_mvm_switch_to_d3(mvm);
868 if (ret)
869 return ret;
870
8ca151b5
JB		 871 ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta);
872 if (ret)
671b5820
LC		 873 return ret;
874
875 key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
876 if (!key_data.rsc_tsc)
877 return -ENOMEM;
8ca151b5
JB		 878
879 if (!iwlwifi_mod_params.sw_crypto) {
880 /*
881 * This needs to be unlocked due to lock ordering
882 * constraints. Since we're in the suspend path
883 * that isn't really a problem though.
884 */
885 mutex_unlock(&mvm->mutex);
886 ieee80211_iter_keys(mvm->hw, vif,
887 iwl_mvm_wowlan_program_keys,
888 &key_data);
889 mutex_lock(&mvm->mutex);
890 if (key_data.error) {
891 ret = -EIO;
892 goto out;
893 }
894
895 if (key_data.use_rsc_tsc) {
896 struct iwl_host_cmd rsc_tsc_cmd = {
897 .id = WOWLAN_TSC_RSC_PARAM,
8ca151b5
JB		 898 .data[0] = key_data.rsc_tsc,
899 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
900 .len[0] = sizeof(*key_data.rsc_tsc),
901 };
902
903 ret = iwl_mvm_send_cmd(mvm, &rsc_tsc_cmd);
904 if (ret)
905 goto out;
906 }
907
908 if (key_data.use_tkip) {
909 ret = iwl_mvm_send_cmd_pdu(mvm,
910 WOWLAN_TKIP_PARAM,
a1022927 911 0, sizeof(tkip_cmd),
8ca151b5
JB		 912 &tkip_cmd);
913 if (ret)
914 goto out;
915 }
916
917 if (mvmvif->rekey_data.valid) {
918 memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
919 memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck,
920 NL80211_KCK_LEN);
921 kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
922 memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek,
923 NL80211_KEK_LEN);
924 kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
925 kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr;
926
927 ret = iwl_mvm_send_cmd_pdu(mvm,
a1022927 928 WOWLAN_KEK_KCK_MATERIAL, 0,
8ca151b5
JB		 929 sizeof(kek_kck_cmd),
930 &kek_kck_cmd);
931 if (ret)
932 goto out;
933 }
934 }
935
c8b06a99
EG		 936 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0,
937 sizeof(*wowlan_config_cmd),
938 wowlan_config_cmd);
8ca151b5
JB		 939 if (ret)
940 goto out;
941
942 ret = iwl_mvm_send_patterns(mvm, wowlan);
943 if (ret)
944 goto out;
945
a1022927 946 ret = iwl_mvm_send_proto_offload(mvm, vif, false, 0);
8ca151b5
JB		 947 if (ret)
948 goto out;
949
f0c2646a 950 ret = iwl_mvm_send_remote_wake_cfg(mvm, vif, wowlan->tcp);
671b5820
LC		 951
952out:
953 kfree(key_data.rsc_tsc);
954 return ret;
955}
956
3acc952b
LC		 957static int
958iwl_mvm_netdetect_config(struct iwl_mvm *mvm,
959 struct cfg80211_wowlan *wowlan,
960 struct cfg80211_sched_scan_request *nd_config,
961 struct ieee80211_vif *vif)
962{
c8b06a99 963 struct iwl_wowlan_config_cmd wowlan_config_cmd = {};
3acc952b
LC		 964 int ret;
965
966 ret = iwl_mvm_switch_to_d3(mvm);
967 if (ret)
968 return ret;
969
970 /* rfkill release can be either for wowlan or netdetect */
971 if (wowlan->rfkill_release)
c8b06a99 972 wowlan_config_cmd.wakeup_filter |=
3acc952b
LC		 973 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
974
c8b06a99
EG		 975 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0,
976 sizeof(wowlan_config_cmd),
977 &wowlan_config_cmd);
3acc952b
LC		 978 if (ret)
979 return ret;
980
981 ret = iwl_mvm_scan_offload_start(mvm, vif, nd_config, &mvm->nd_ies);
d9718da8
LC		 982 if (ret)
983 return ret;
3acc952b 984
8ed4e659 985 if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels))
d9718da8
LC		 986 return -EBUSY;
987
8ed4e659 988 /* save the sched scan matchsets... */
d9718da8
LC		 989 if (nd_config->n_match_sets) {
990 mvm->nd_match_sets = kmemdup(nd_config->match_sets,
991 sizeof(*nd_config->match_sets) *
992 nd_config->n_match_sets,
993 GFP_KERNEL);
994 if (mvm->nd_match_sets)
995 mvm->n_nd_match_sets = nd_config->n_match_sets;
996 }
997
8ed4e659
LC		 998 /* ...and the sched scan channels for later reporting */
999 mvm->nd_channels = kmemdup(nd_config->channels,
1000 sizeof(*nd_config->channels) *
1001 nd_config->n_channels,
1002 GFP_KERNEL);
1003 if (mvm->nd_channels)
1004 mvm->n_nd_channels = nd_config->n_channels;
1005
d9718da8
LC		 1006 return 0;
1007}
1008
1009static void iwl_mvm_free_nd(struct iwl_mvm *mvm)
1010{
1011 kfree(mvm->nd_match_sets);
1012 mvm->nd_match_sets = NULL;
1013 mvm->n_nd_match_sets = 0;
8ed4e659
LC		 1014 kfree(mvm->nd_channels);
1015 mvm->nd_channels = NULL;
1016 mvm->n_nd_channels = 0;
3acc952b
LC		 1017}
1018
671b5820
LC		 1019static int __iwl_mvm_suspend(struct ieee80211_hw *hw,
1020 struct cfg80211_wowlan *wowlan,
1021 bool test)
1022{
1023 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
671b5820
LC		 1024 struct ieee80211_vif *vif = NULL;
1025 struct iwl_mvm_vif *mvmvif = NULL;
1026 struct ieee80211_sta *ap_sta = NULL;
671b5820
LC		 1027 struct iwl_d3_manager_config d3_cfg_cmd_data = {
1028 /*
1029 * Program the minimum sleep time to 10 seconds, as many
1030 * platforms have issues processing a wakeup signal while
1031 * still being in the process of suspending.
1032 */
1033 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000),
1034 };
1035 struct iwl_host_cmd d3_cfg_cmd = {
1036 .id = D3_CONFIG_CMD,
1037 .flags = CMD_WANT_SKB,
1038 .data[0] = &d3_cfg_cmd_data,
1039 .len[0] = sizeof(d3_cfg_cmd_data),
1040 };
1041 int ret;
1042 int len __maybe_unused;
1043
1044 if (!wowlan) {
1045 /*
1046 * mac80211 shouldn't get here, but for D3 test
1047 * it doesn't warrant a warning
1048 */
1049 WARN_ON(!test);
1050 return -EINVAL;
1051 }
1052
1053 mutex_lock(&mvm->mutex);
1054
7f549e2c
LC		 1055 vif = iwl_mvm_get_bss_vif(mvm);
1056 if (IS_ERR_OR_NULL(vif)) {
671b5820
LC		 1057 ret = 1;
1058 goto out_noreset;
1059 }
1060
671b5820
LC		 1061 mvmvif = iwl_mvm_vif_from_mac80211(vif);
1062
3acc952b
LC		 1063 if (mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT) {
1064 /* if we're not associated, this must be netdetect */
1065 if (!wowlan->nd_config && !mvm->nd_config) {
1066 ret = 1;
1067 goto out_noreset;
1068 }
1069
1070 ret = iwl_mvm_netdetect_config(
1071 mvm, wowlan, wowlan->nd_config ?: mvm->nd_config, vif);
1072 if (ret)
1073 goto out;
2021a89d
LC		 1074
1075 mvm->net_detect = true;
3acc952b 1076 } else {
c8b06a99 1077 struct iwl_wowlan_config_cmd wowlan_config_cmd = {};
3acc952b 1078
1e4d19ca
LC		 1079 ap_sta = rcu_dereference_protected(
1080 mvm->fw_id_to_mac_id[mvmvif->ap_sta_id],
1081 lockdep_is_held(&mvm->mutex));
1082 if (IS_ERR_OR_NULL(ap_sta)) {
1083 ret = -EINVAL;
1084 goto out_noreset;
1085 }
671b5820 1086
1e4d19ca
LC		 1087 ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1088 vif, mvmvif, ap_sta);
1089 if (ret)
1090 goto out_noreset;
1e4d19ca
LC		 1091 ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1092 vif, mvmvif, ap_sta);
1093 if (ret)
3c2f3b20 1094 goto out;
2021a89d
LC		 1095
1096 mvm->net_detect = false;
1e4d19ca 1097 }
f0c2646a 1098
c1cb92fc 1099 ret = iwl_mvm_power_update_device(mvm);
64b928c4
AB		 1100 if (ret)
1101 goto out;
1102
999609f1 1103 ret = iwl_mvm_power_update_mac(mvm);
ee1e8422
AB		 1104 if (ret)
1105 goto out;
1106
b0114714
JB		 1107#ifdef CONFIG_IWLWIFI_DEBUGFS
1108 if (mvm->d3_wake_sysassert)
1109 d3_cfg_cmd_data.wakeup_flags |=
1110 cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR);
1111#endif
1112
8ca151b5 1113 /* must be last -- this switches firmware state */
debff618 1114 ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd);
8ca151b5
JB		 1115 if (ret)
1116 goto out;
debff618 1117#ifdef CONFIG_IWLWIFI_DEBUGFS
65b30348
JB		 1118 len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt);
1119 if (len >= sizeof(u32)) {
debff618
JB		 1120 mvm->d3_test_pme_ptr =
1121 le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data);
debff618
JB		 1122 }
1123#endif
1124 iwl_free_resp(&d3_cfg_cmd);
8ca151b5
JB		 1125
1126 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1127
debff618 1128 iwl_trans_d3_suspend(mvm->trans, test);
8ca151b5 1129 out:
d9718da8 1130 if (ret < 0) {
8ca151b5 1131 ieee80211_restart_hw(mvm->hw);
d9718da8
LC		 1132 iwl_mvm_free_nd(mvm);
1133 }
b70ab727 1134 out_noreset:
8ca151b5
JB		 1135 mutex_unlock(&mvm->mutex);
1136
1137 return ret;
1138}
1139
6735943f
EP		 1140static int iwl_mvm_enter_d0i3_sync(struct iwl_mvm *mvm)
1141{
1142 struct iwl_notification_wait wait_d3;
1143 static const u8 d3_notif[] = { D3_CONFIG_CMD };
1144 int ret;
1145
1146 iwl_init_notification_wait(&mvm->notif_wait, &wait_d3,
1147 d3_notif, ARRAY_SIZE(d3_notif),
1148 NULL, NULL);
1149
1150 ret = iwl_mvm_enter_d0i3(mvm->hw->priv);
1151 if (ret)
1152 goto remove_notif;
1153
1154 ret = iwl_wait_notification(&mvm->notif_wait, &wait_d3, HZ);
1155 WARN_ON_ONCE(ret);
1156 return ret;
1157
1158remove_notif:
1159 iwl_remove_notification(&mvm->notif_wait, &wait_d3);
1160 return ret;
1161}
1162
debff618
JB		 1163int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
1164{
d15a747f
EP		 1165 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1166
465921c8 1167 iwl_trans_suspend(mvm->trans);
91742449
EP		 1168 if (wowlan->any) {
1169 /* 'any' trigger means d0i3 usage */
6735943f
EP		 1170 if (mvm->trans->d0i3_mode == IWL_D0I3_MODE_ON_SUSPEND) {
1171 int ret = iwl_mvm_enter_d0i3_sync(mvm);
1172
1173 if (ret)
1174 return ret;
1175 }
1176
d15a747f
EP		 1177 mutex_lock(&mvm->d0i3_suspend_mutex);
1178 __set_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags);
1179 mutex_unlock(&mvm->d0i3_suspend_mutex);
1180 return 0;
1181 }
1182
debff618
JB		 1183 return __iwl_mvm_suspend(hw, wowlan, false);
1184}
1185
6d9d32b8
JB		 1186/* converted data from the different status responses */
1187struct iwl_wowlan_status_data {
1188 u16 pattern_number;
1189 u16 qos_seq_ctr[8];
1190 u32 wakeup_reasons;
1191 u32 wake_packet_length;
1192 u32 wake_packet_bufsize;
1193 const u8 *wake_packet;
1194};
1195
7abc4632
JB		 1196static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm,
1197 struct ieee80211_vif *vif,
6d9d32b8 1198 struct iwl_wowlan_status_data *status)
9b26b500 1199{
7abc4632 1200 struct sk_buff *pkt = NULL;
9b26b500
JB		 1201 struct cfg80211_wowlan_wakeup wakeup = {
1202 .pattern_idx = -1,
1203 };
1204 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
6d9d32b8 1205 u32 reasons = status->wakeup_reasons;
9b26b500
JB		 1206
1207 if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
1208 wakeup_report = NULL;
1209 goto report;
1210 }
1211
f444eb10 1212 if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET)
9b26b500 1213 wakeup.magic_pkt = true;
9b26b500 1214
f444eb10 1215 if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN)
9b26b500 1216 wakeup.pattern_idx =
6d9d32b8 1217 status->pattern_number;
9b26b500
JB		 1218
1219 if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1220 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH))
1221 wakeup.disconnect = true;
1222
f444eb10 1223 if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)
9b26b500 1224 wakeup.gtk_rekey_failure = true;
9b26b500 1225
f444eb10 1226 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
9b26b500 1227 wakeup.rfkill_release = true;
9b26b500 1228
f444eb10 1229 if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST)
9b26b500 1230 wakeup.eap_identity_req = true;
9b26b500 1231
f444eb10 1232 if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE)
9b26b500 1233 wakeup.four_way_handshake = true;
9b26b500 1234
f0c2646a
JB		 1235 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS)
1236 wakeup.tcp_connlost = true;
1237
1238 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE)
1239 wakeup.tcp_nomoretokens = true;
1240
1241 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET)
1242 wakeup.tcp_match = true;
1243
9b26b500 1244 if (status->wake_packet_bufsize) {
6d9d32b8
JB		 1245 int pktsize = status->wake_packet_bufsize;
1246 int pktlen = status->wake_packet_length;
f444eb10
JB		 1247 const u8 *pktdata = status->wake_packet;
1248 struct ieee80211_hdr *hdr = (void *)pktdata;
1249 int truncated = pktlen - pktsize;
1250
1251 /* this would be a firmware bug */
1252 if (WARN_ON_ONCE(truncated < 0))
1253 truncated = 0;
1254
1255 if (ieee80211_is_data(hdr->frame_control)) {
1256 int hdrlen = ieee80211_hdrlen(hdr->frame_control);
1257 int ivlen = 0, icvlen = 4; /* also FCS */
9b26b500 1258
9b26b500
JB		 1259 pkt = alloc_skb(pktsize, GFP_KERNEL);
1260 if (!pkt)
1261 goto report;
f444eb10
JB		 1262
1263 memcpy(skb_put(pkt, hdrlen), pktdata, hdrlen);
1264 pktdata += hdrlen;
1265 pktsize -= hdrlen;
1266
1267 if (ieee80211_has_protected(hdr->frame_control)) {
7abc4632
JB		 1268 /*
1269 * This is unlocked and using gtk_i(c)vlen,
1270 * but since everything is under RTNL still
1271 * that's not really a problem - changing
1272 * it would be difficult.
1273 */
f444eb10
JB		 1274 if (is_multicast_ether_addr(hdr->addr1)) {
1275 ivlen = mvm->gtk_ivlen;
1276 icvlen += mvm->gtk_icvlen;
1277 } else {
1278 ivlen = mvm->ptk_ivlen;
1279 icvlen += mvm->ptk_icvlen;
1280 }
1281 }
1282
1283 /* if truncated, FCS/ICV is (partially) gone */
1284 if (truncated >= icvlen) {
1285 icvlen = 0;
1286 truncated -= icvlen;
1287 } else {
1288 icvlen -= truncated;
1289 truncated = 0;
1290 }
1291
1292 pktsize -= ivlen + icvlen;
1293 pktdata += ivlen;
1294
1295 memcpy(skb_put(pkt, pktsize), pktdata, pktsize);
1296
9b26b500
JB		 1297 if (ieee80211_data_to_8023(pkt, vif->addr, vif->type))
1298 goto report;
1299 wakeup.packet = pkt->data;
1300 wakeup.packet_present_len = pkt->len;
f444eb10 1301 wakeup.packet_len = pkt->len - truncated;
9b26b500
JB		 1302 wakeup.packet_80211 = false;
1303 } else {
f444eb10
JB		 1304 int fcslen = 4;
1305
1306 if (truncated >= 4) {
1307 truncated -= 4;
1308 fcslen = 0;
1309 } else {
1310 fcslen -= truncated;
1311 truncated = 0;
1312 }
1313 pktsize -= fcslen;
9b26b500
JB		 1314 wakeup.packet = status->wake_packet;
1315 wakeup.packet_present_len = pktsize;
f444eb10 1316 wakeup.packet_len = pktlen - truncated;
9b26b500
JB		 1317 wakeup.packet_80211 = true;
1318 }
1319 }
1320
1321 report:
1322 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
1323 kfree_skb(pkt);
7abc4632 1324}
9b26b500 1325
6d9d32b8
JB		 1326static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc,
1327 struct ieee80211_key_seq *seq)
1328{
1329 u64 pn;
1330
1331 pn = le64_to_cpu(sc->pn);
1332 seq->ccmp.pn[0] = pn >> 40;
1333 seq->ccmp.pn[1] = pn >> 32;
1334 seq->ccmp.pn[2] = pn >> 24;
1335 seq->ccmp.pn[3] = pn >> 16;
1336 seq->ccmp.pn[4] = pn >> 8;
1337 seq->ccmp.pn[5] = pn;
1338}
1339
1340static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc,
1341 struct ieee80211_key_seq *seq)
1342{
1343 seq->tkip.iv32 = le32_to_cpu(sc->iv32);
1344 seq->tkip.iv16 = le16_to_cpu(sc->iv16);
1345}
1346
1347static void iwl_mvm_set_aes_rx_seq(struct aes_sc *scs,
1348 struct ieee80211_key_conf *key)
1349{
1350 int tid;
1351
1352 BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS);
1353
1354 for (tid = 0; tid < IWL_NUM_RSC; tid++) {
1355 struct ieee80211_key_seq seq = {};
1356
1357 iwl_mvm_aes_sc_to_seq(&scs[tid], &seq);
1358 ieee80211_set_key_rx_seq(key, tid, &seq);
1359 }
1360}
1361
1362static void iwl_mvm_set_tkip_rx_seq(struct tkip_sc *scs,
1363 struct ieee80211_key_conf *key)
1364{
1365 int tid;
1366
1367 BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS);
1368
1369 for (tid = 0; tid < IWL_NUM_RSC; tid++) {
1370 struct ieee80211_key_seq seq = {};
1371
1372 iwl_mvm_tkip_sc_to_seq(&scs[tid], &seq);
1373 ieee80211_set_key_rx_seq(key, tid, &seq);
1374 }
1375}
1376
1377static void iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf *key,
3afec639 1378 struct iwl_wowlan_status *status)
6d9d32b8
JB		 1379{
1380 union iwl_all_tsc_rsc *rsc = &status->gtk.rsc.all_tsc_rsc;
1381
1382 switch (key->cipher) {
1383 case WLAN_CIPHER_SUITE_CCMP:
1384 iwl_mvm_set_aes_rx_seq(rsc->aes.multicast_rsc, key);
1385 break;
1386 case WLAN_CIPHER_SUITE_TKIP:
1387 iwl_mvm_set_tkip_rx_seq(rsc->tkip.multicast_rsc, key);
1388 break;
1389 default:
1390 WARN_ON(1);
1391 }
1392}
1393
1394struct iwl_mvm_d3_gtk_iter_data {
3afec639 1395 struct iwl_wowlan_status *status;
6d9d32b8
JB		 1396 void *last_gtk;
1397 u32 cipher;
1398 bool find_phase, unhandled_cipher;
1399 int num_keys;
1400};
1401
1402static void iwl_mvm_d3_update_gtks(struct ieee80211_hw *hw,
1403 struct ieee80211_vif *vif,
1404 struct ieee80211_sta *sta,
1405 struct ieee80211_key_conf *key,
1406 void *_data)
1407{
1408 struct iwl_mvm_d3_gtk_iter_data *data = _data;
1409
1410 if (data->unhandled_cipher)
1411 return;
1412
1413 switch (key->cipher) {
1414 case WLAN_CIPHER_SUITE_WEP40:
1415 case WLAN_CIPHER_SUITE_WEP104:
1416 /* ignore WEP completely, nothing to do */
1417 return;
1418 case WLAN_CIPHER_SUITE_CCMP:
1419 case WLAN_CIPHER_SUITE_TKIP:
1420 /* we support these */
1421 break;
1422 default:
1423 /* everything else (even CMAC for MFP) - disconnect from AP */
1424 data->unhandled_cipher = true;
1425 return;
1426 }
1427
1428 data->num_keys++;
1429
1430 /*
1431 * pairwise key - update sequence counters only;
1432 * note that this assumes no TDLS sessions are active
1433 */
1434 if (sta) {
1435 struct ieee80211_key_seq seq = {};
1436 union iwl_all_tsc_rsc *sc = &data->status->gtk.rsc.all_tsc_rsc;
1437
1438 if (data->find_phase)
1439 return;
1440
1441 switch (key->cipher) {
1442 case WLAN_CIPHER_SUITE_CCMP:
1443 iwl_mvm_aes_sc_to_seq(&sc->aes.tsc, &seq);
1444 iwl_mvm_set_aes_rx_seq(sc->aes.unicast_rsc, key);
1445 break;
1446 case WLAN_CIPHER_SUITE_TKIP:
1447 iwl_mvm_tkip_sc_to_seq(&sc->tkip.tsc, &seq);
1448 iwl_mvm_set_tkip_rx_seq(sc->tkip.unicast_rsc, key);
1449 break;
1450 }
1451 ieee80211_set_key_tx_seq(key, &seq);
1452
1453 /* that's it for this key */
1454 return;
1455 }
1456
1457 if (data->find_phase) {
1458 data->last_gtk = key;
1459 data->cipher = key->cipher;
1460 return;
1461 }
1462
1463 if (data->status->num_of_gtk_rekeys)
1464 ieee80211_remove_key(key);
1465 else if (data->last_gtk == key)
1466 iwl_mvm_set_key_rx_seq(key, data->status);
1467}
1468
1469static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm,
1470 struct ieee80211_vif *vif,
3afec639 1471 struct iwl_wowlan_status *status)
6d9d32b8
JB		 1472{
1473 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1474 struct iwl_mvm_d3_gtk_iter_data gtkdata = {
1475 .status = status,
1476 };
431591cc
EP		 1477 u32 disconnection_reasons =
1478 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1479 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH;
6d9d32b8
JB		 1480
1481 if (!status || !vif->bss_conf.bssid)
1482 return false;
1483
431591cc
EP		 1484 if (le32_to_cpu(status->wakeup_reasons) & disconnection_reasons)
1485 return false;
1486
6d9d32b8
JB		 1487 /* find last GTK that we used initially, if any */
1488 gtkdata.find_phase = true;
1489 ieee80211_iter_keys(mvm->hw, vif,
1490 iwl_mvm_d3_update_gtks, &gtkdata);
1491 /* not trying to keep connections with MFP/unhandled ciphers */
1492 if (gtkdata.unhandled_cipher)
1493 return false;
1494 if (!gtkdata.num_keys)
cfa88893 1495 goto out;
6d9d32b8
JB		 1496 if (!gtkdata.last_gtk)
1497 return false;
1498
1499 /*
1500 * invalidate all other GTKs that might still exist and update
1501 * the one that we used
1502 */
1503 gtkdata.find_phase = false;
1504 ieee80211_iter_keys(mvm->hw, vif,
1505 iwl_mvm_d3_update_gtks, &gtkdata);
1506
1507 if (status->num_of_gtk_rekeys) {
1508 struct ieee80211_key_conf *key;
1509 struct {
1510 struct ieee80211_key_conf conf;
1511 u8 key[32];
1512 } conf = {
1513 .conf.cipher = gtkdata.cipher,
1514 .conf.keyidx = status->gtk.key_index,
1515 };
1516
1517 switch (gtkdata.cipher) {
1518 case WLAN_CIPHER_SUITE_CCMP:
1519 conf.conf.keylen = WLAN_KEY_LEN_CCMP;
1520 memcpy(conf.conf.key, status->gtk.decrypt_key,
1521 WLAN_KEY_LEN_CCMP);
1522 break;
1523 case WLAN_CIPHER_SUITE_TKIP:
1524 conf.conf.keylen = WLAN_KEY_LEN_TKIP;
1525 memcpy(conf.conf.key, status->gtk.decrypt_key, 16);
1526 /* leave TX MIC key zeroed, we don't use it anyway */
1527 memcpy(conf.conf.key +
1528 NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
1529 status->gtk.tkip_mic_key, 8);
1530 break;
1531 }
1532
1533 key = ieee80211_gtk_rekey_add(vif, &conf.conf);
1534 if (IS_ERR(key))
1535 return false;
1536 iwl_mvm_set_key_rx_seq(key, status);
1537 }
1538
1539 if (status->num_of_gtk_rekeys) {
1540 __be64 replay_ctr =
1541 cpu_to_be64(le64_to_cpu(status->replay_ctr));
1542 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid,
1543 (void *)&replay_ctr, GFP_KERNEL);
1544 }
1545
cfa88893 1546out:
6d9d32b8
JB		 1547 mvmvif->seqno_valid = true;
1548 /* +0x10 because the set API expects next-to-use, not last-used */
1549 mvmvif->seqno = le16_to_cpu(status->non_qos_seq_ctr) + 0x10;
1550
1551 return true;
1552}
1553
ec12f457
LC		 1554static struct iwl_wowlan_status *
1555iwl_mvm_get_wakeup_status(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
7abc4632
JB		 1556{
1557 u32 base = mvm->error_event_table;
1558 struct error_table_start {
1559 /* cf. struct iwl_error_event_table */
1560 u32 valid;
1561 u32 error_id;
1562 } err_info;
1563 struct iwl_host_cmd cmd = {
1564 .id = WOWLAN_GET_STATUSES,
a1022927 1565 .flags = CMD_WANT_SKB,
7abc4632 1566 };
ec12f457
LC		 1567 struct iwl_wowlan_status *status, *fw_status;
1568 int ret, len, status_size;
7abc4632
JB		 1569
1570 iwl_trans_read_mem_bytes(mvm->trans, base,
1571 &err_info, sizeof(err_info));
1572
1573 if (err_info.valid) {
ec12f457
LC		 1574 IWL_INFO(mvm, "error table is valid (%d) with error (%d)\n",
1575 err_info.valid, err_info.error_id);
7abc4632
JB		 1576 if (err_info.error_id == RF_KILL_INDICATOR_FOR_WOWLAN) {
1577 struct cfg80211_wowlan_wakeup wakeup = {
1578 .rfkill_release = true,
1579 };
1580 ieee80211_report_wowlan_wakeup(vif, &wakeup,
1581 GFP_KERNEL);
1582 }
ec12f457 1583 return ERR_PTR(-EIO);
7abc4632
JB		 1584 }
1585
1586 /* only for tracing for now */
a1022927 1587 ret = iwl_mvm_send_cmd_pdu(mvm, OFFLOADS_QUERY_CMD, 0, 0, NULL);
7abc4632
JB		 1588 if (ret)
1589 IWL_ERR(mvm, "failed to query offload statistics (%d)\n", ret);
1590
1591 ret = iwl_mvm_send_cmd(mvm, &cmd);
1592 if (ret) {
1593 IWL_ERR(mvm, "failed to query status (%d)\n", ret);
ec12f457 1594 return ERR_PTR(ret);
7abc4632
JB		 1595 }
1596
1597 /* RF-kill already asserted again... */
ec12f457
LC		 1598 if (!cmd.resp_pkt) {
1599 ret = -ERFKILL;
1600 goto out_free_resp;
1601 }
7abc4632 1602
3afec639 1603 status_size = sizeof(*fw_status);
6d9d32b8 1604
65b30348
JB		 1605 len = iwl_rx_packet_payload_len(cmd.resp_pkt);
1606 if (len < status_size) {
7abc4632 1607 IWL_ERR(mvm, "Invalid WoWLAN status response!\n");
ec12f457
LC		 1608 ret = -EIO;
1609 goto out_free_resp;
1610 }
1611
1612 status = (void *)cmd.resp_pkt->data;
1613 if (len != (status_size +
1614 ALIGN(le32_to_cpu(status->wake_packet_bufsize), 4))) {
1615 IWL_ERR(mvm, "Invalid WoWLAN status response!\n");
1616 ret = -EIO;
7abc4632
JB		 1617 goto out_free_resp;
1618 }
1619
ec12f457
LC		 1620 fw_status = kmemdup(status, len, GFP_KERNEL);
1621
1622out_free_resp:
1623 iwl_free_resp(&cmd);
1624 return ret ? ERR_PTR(ret) : fw_status;
1625}
1626
1627/* releases the MVM mutex */
1628static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm,
1629 struct ieee80211_vif *vif)
1630{
1631 struct iwl_wowlan_status_data status;
1632 struct iwl_wowlan_status *fw_status;
1633 int i;
1634 bool keep;
1635 struct ieee80211_sta *ap_sta;
1636 struct iwl_mvm_sta *mvm_ap_sta;
1637
1638 fw_status = iwl_mvm_get_wakeup_status(mvm, vif);
1639 if (IS_ERR_OR_NULL(fw_status))
1640 goto out_unlock;
3afec639
EG		 1641
1642 status.pattern_number = le16_to_cpu(fw_status->pattern_number);
1643 for (i = 0; i < 8; i++)
1644 status.qos_seq_ctr[i] =
1645 le16_to_cpu(fw_status->qos_seq_ctr[i]);
1646 status.wakeup_reasons = le32_to_cpu(fw_status->wakeup_reasons);
1647 status.wake_packet_length =
1648 le32_to_cpu(fw_status->wake_packet_length);
1649 status.wake_packet_bufsize =
1650 le32_to_cpu(fw_status->wake_packet_bufsize);
1651 status.wake_packet = fw_status->wake_packet;
7abc4632 1652
6d9d32b8
JB		 1653 /* still at hard-coded place 0 for D3 image */
1654 ap_sta = rcu_dereference_protected(
1655 mvm->fw_id_to_mac_id[0],
1656 lockdep_is_held(&mvm->mutex));
1657 if (IS_ERR_OR_NULL(ap_sta))
ec12f457 1658 goto out_free;
6d9d32b8 1659
9d8ce6af 1660 mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
6d9d32b8
JB		 1661 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1662 u16 seq = status.qos_seq_ctr[i];
1663 /* firmware stores last-used value, we store next value */
1664 seq += 0x10;
1665 mvm_ap_sta->tid_data[i].seq_number = seq;
1666 }
1667
7abc4632
JB		 1668 /* now we have all the data we need, unlock to avoid mac80211 issues */
1669 mutex_unlock(&mvm->mutex);
1670
6d9d32b8
JB		 1671 iwl_mvm_report_wakeup_reasons(mvm, vif, &status);
1672
3afec639 1673 keep = iwl_mvm_setup_connection_keep(mvm, vif, fw_status);
6d9d32b8 1674
ec12f457 1675 kfree(fw_status);
6d9d32b8 1676 return keep;
7abc4632 1677
ec12f457
LC		 1678out_free:
1679 kfree(fw_status);
1680out_unlock:
7abc4632 1681 mutex_unlock(&mvm->mutex);
6d9d32b8 1682 return false;
9b26b500
JB		 1683}
1684
8ed4e659
LC		 1685struct iwl_mvm_nd_query_results {
1686 u32 matched_profiles;
1687 struct iwl_scan_offload_profile_match matches[IWL_SCAN_MAX_PROFILES];
1688};
1689
1690static int
1691iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm,
1692 struct iwl_mvm_nd_query_results *results)
b04998f3
LC		 1693{
1694 struct iwl_scan_offload_profiles_query *query;
1695 struct iwl_host_cmd cmd = {
1696 .id = SCAN_OFFLOAD_PROFILES_QUERY_CMD,
1697 .flags = CMD_WANT_SKB,
1698 };
1699 int ret, len;
1700
1701 ret = iwl_mvm_send_cmd(mvm, &cmd);
1702 if (ret) {
1703 IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret);
8ed4e659 1704 return ret;
b04998f3
LC		 1705 }
1706
1707 /* RF-kill already asserted again... */
8ed4e659
LC		 1708 if (!cmd.resp_pkt) {
1709 ret = -ERFKILL;
b04998f3 1710 goto out_free_resp;
8ed4e659 1711 }
b04998f3
LC		 1712
1713 len = iwl_rx_packet_payload_len(cmd.resp_pkt);
1714 if (len < sizeof(*query)) {
1715 IWL_ERR(mvm, "Invalid scan offload profiles query response!\n");
8ed4e659 1716 ret = -EIO;
b04998f3
LC		 1717 goto out_free_resp;
1718 }
1719
1720 query = (void *)cmd.resp_pkt->data;
1721
8ed4e659
LC		 1722 results->matched_profiles = le32_to_cpu(query->matched_profiles);
1723 memcpy(results->matches, query->matches, sizeof(results->matches));
b04998f3
LC		 1724
1725out_free_resp:
1726 iwl_free_resp(&cmd);
1727 return ret;
1728}
1729
2021a89d
LC		 1730static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm,
1731 struct ieee80211_vif *vif)
1732{
d9718da8 1733 struct cfg80211_wowlan_nd_info *net_detect = NULL;
2021a89d
LC		 1734 struct cfg80211_wowlan_wakeup wakeup = {
1735 .pattern_idx = -1,
1736 };
1737 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
8ed4e659 1738 struct iwl_mvm_nd_query_results query;
2021a89d 1739 struct iwl_wowlan_status *fw_status;
d9718da8 1740 unsigned long matched_profiles;
2021a89d 1741 u32 reasons = 0;
8ed4e659 1742 int i, j, n_matches, ret;
2021a89d
LC		 1743
1744 fw_status = iwl_mvm_get_wakeup_status(mvm, vif);
1745 if (!IS_ERR_OR_NULL(fw_status))
1746 reasons = le32_to_cpu(fw_status->wakeup_reasons);
1747
1748 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
1749 wakeup.rfkill_release = true;
1750
b04998f3
LC		 1751 if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS)
1752 goto out;
1753
8ed4e659
LC		 1754 ret = iwl_mvm_netdetect_query_results(mvm, &query);
1755 if (ret || !query.matched_profiles) {
2021a89d 1756 wakeup_report = NULL;
b04998f3 1757 goto out;
2021a89d
LC		 1758 }
1759
8ed4e659 1760 matched_profiles = query.matched_profiles;
d9718da8
LC		 1761 if (mvm->n_nd_match_sets) {
1762 n_matches = hweight_long(matched_profiles);
1763 } else {
1764 IWL_ERR(mvm, "no net detect match information available\n");
1765 n_matches = 0;
1766 }
1767
1768 net_detect = kzalloc(sizeof(*net_detect) +
1769 (n_matches * sizeof(net_detect->matches[0])),
1770 GFP_KERNEL);
1771 if (!net_detect || !n_matches)
1772 goto out_report_nd;
1773
1774 for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) {
8ed4e659 1775 struct iwl_scan_offload_profile_match *fw_match;
d9718da8 1776 struct cfg80211_wowlan_nd_match *match;
8ed4e659
LC		 1777 int n_channels = 0;
1778
1779 fw_match = &query.matches[i];
1780
1781 for (j = 0; j < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; j++)
1782 n_channels += hweight8(fw_match->matching_channels[j]);
d9718da8 1783
8ed4e659
LC		 1784 match = kzalloc(sizeof(*match) +
1785 (n_channels * sizeof(*match->channels)),
1786 GFP_KERNEL);
d9718da8
LC		 1787 if (!match)
1788 goto out_report_nd;
1789
8ed4e659
LC		 1790 net_detect->matches[net_detect->n_matches++] = match;
1791
d9718da8
LC		 1792 match->ssid.ssid_len = mvm->nd_match_sets[i].ssid.ssid_len;
1793 memcpy(match->ssid.ssid, mvm->nd_match_sets[i].ssid.ssid,
1794 match->ssid.ssid_len);
1795
8ed4e659
LC		 1796 if (mvm->n_nd_channels < n_channels)
1797 continue;
1798
1799 for (j = 0; j < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; j++)
1800 if (fw_match->matching_channels[j / 8] & (BIT(j % 8)))
1801 match->channels[match->n_channels++] =
1802 mvm->nd_channels[j]->center_freq;
d9718da8
LC		 1803 }
1804
1805out_report_nd:
1806 wakeup.net_detect = net_detect;
b04998f3 1807out:
d9718da8
LC		 1808 iwl_mvm_free_nd(mvm);
1809
2021a89d
LC		 1810 mutex_unlock(&mvm->mutex);
1811 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
d9718da8
LC		 1812
1813 if (net_detect) {
1814 for (i = 0; i < net_detect->n_matches; i++)
1815 kfree(net_detect->matches[i]);
1816 kfree(net_detect);
1817 }
2021a89d
LC		 1818}
1819
afc66bb7
JB		 1820static void iwl_mvm_read_d3_sram(struct iwl_mvm *mvm)
1821{
1822#ifdef CONFIG_IWLWIFI_DEBUGFS
1823 const struct fw_img *img = &mvm->fw->img[IWL_UCODE_WOWLAN];
1824 u32 len = img->sec[IWL_UCODE_SECTION_DATA].len;
1825 u32 offs = img->sec[IWL_UCODE_SECTION_DATA].offset;
1826
1827 if (!mvm->store_d3_resume_sram)
1828 return;
1829
1830 if (!mvm->d3_resume_sram) {
1831 mvm->d3_resume_sram = kzalloc(len, GFP_KERNEL);
1832 if (!mvm->d3_resume_sram)
1833 return;
1834 }
1835
1836 iwl_trans_read_mem_bytes(mvm->trans, offs, mvm->d3_resume_sram, len);
1837#endif
1838}
1839
6d9d32b8
JB		 1840static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac,
1841 struct ieee80211_vif *vif)
1842{
1843 /* skip the one we keep connection on */
1844 if (data == vif)
1845 return;
1846
1847 if (vif->type == NL80211_IFTYPE_STATION)
1848 ieee80211_resume_disconnect(vif);
1849}
1850
debff618 1851static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test)
8ca151b5 1852{
8ca151b5 1853 struct ieee80211_vif *vif = NULL;
8ca151b5
JB		 1854 int ret;
1855 enum iwl_d3_status d3_status;
6d9d32b8 1856 bool keep = false;
8ca151b5
JB		 1857
1858 mutex_lock(&mvm->mutex);
1859
1860 /* get the BSS vif pointer again */
7f549e2c
LC		 1861 vif = iwl_mvm_get_bss_vif(mvm);
1862 if (IS_ERR_OR_NULL(vif))
8ca151b5
JB		 1863 goto out_unlock;
1864
debff618 1865 ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test);
8ca151b5
JB		 1866 if (ret)
1867 goto out_unlock;
1868
1869 if (d3_status != IWL_D3_STATUS_ALIVE) {
1870 IWL_INFO(mvm, "Device was reset during suspend\n");
1871 goto out_unlock;
1872 }
1873
afc66bb7
JB		 1874 /* query SRAM first in case we want event logging */
1875 iwl_mvm_read_d3_sram(mvm);
1876
2021a89d
LC		 1877 if (mvm->net_detect) {
1878 iwl_mvm_query_netdetect_reasons(mvm, vif);
e0ede177
LC		 1879 /* has unlocked the mutex, so skip that */
1880 goto out;
2021a89d
LC		 1881 } else {
1882 keep = iwl_mvm_query_wakeup_reasons(mvm, vif);
78c9df66 1883#ifdef CONFIG_IWLWIFI_DEBUGFS
2021a89d
LC		 1884 if (keep)
1885 mvm->keep_vif = vif;
e0ede177
LC		 1886 /* has unlocked the mutex, so skip that */
1887 goto out_iterate;
78c9df66 1888#endif
2021a89d 1889 }
8ca151b5
JB		 1890
1891 out_unlock:
1892 mutex_unlock(&mvm->mutex);
1893
e0ede177 1894out_iterate:
6d9d32b8
JB		 1895 if (!test)
1896 ieee80211_iterate_active_interfaces_rtnl(mvm->hw,
1897 IEEE80211_IFACE_ITER_NORMAL,
1898 iwl_mvm_d3_disconnect_iter, keep ? vif : NULL);
8ca151b5 1899
e0ede177 1900out:
8ca151b5
JB		 1901 /* return 1 to reconfigure the device */
1902 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
58629d9d 1903 set_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status);
8ca151b5
JB		 1904 return 1;
1905}
1906
debff618
JB		 1907int iwl_mvm_resume(struct ieee80211_hw *hw)
1908{
1909 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1910
465921c8
EP		 1911 iwl_trans_resume(mvm->trans);
1912
91742449
EP		 1913 if (mvm->hw->wiphy->wowlan_config->any) {
1914 /* 'any' trigger means d0i3 usage */
6735943f
EP		 1915 if (mvm->trans->d0i3_mode == IWL_D0I3_MODE_ON_SUSPEND) {
1916 int ret = iwl_mvm_exit_d0i3(hw->priv);
1917
1918 if (ret)
1919 return ret;
1920 /*
1921 * d0i3 exit will be deferred until reconfig_complete.
1922 * make sure there we are out of d0i3.
1923 */
1924 }
d15a747f 1925 return 0;
91742449 1926 }
d15a747f 1927
debff618
JB		 1928 return __iwl_mvm_resume(mvm, false);
1929}
1930
8ca151b5
JB		 1931void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled)
1932{
1933 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1934
1935 device_set_wakeup_enable(mvm->trans->dev, enabled);
1936}
debff618
JB		 1937
1938#ifdef CONFIG_IWLWIFI_DEBUGFS
1939static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file)
1940{
1941 struct iwl_mvm *mvm = inode->i_private;
1942 int err;
1943
1944 if (mvm->d3_test_active)
1945 return -EBUSY;
1946
1947 file->private_data = inode->i_private;
1948
1949 ieee80211_stop_queues(mvm->hw);
1950 synchronize_net();
1951
1952 /* start pseudo D3 */
1953 rtnl_lock();
1954 err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true);
1955 rtnl_unlock();
1956 if (err > 0)
1957 err = -EINVAL;
1958 if (err) {
1959 ieee80211_wake_queues(mvm->hw);
1960 return err;
1961 }
1962 mvm->d3_test_active = true;
78c9df66 1963 mvm->keep_vif = NULL;
debff618
JB		 1964 return 0;
1965}
1966
1967static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf,
1968 size_t count, loff_t *ppos)
1969{
1970 struct iwl_mvm *mvm = file->private_data;
1971 u32 pme_asserted;
1972
1973 while (true) {
4ed80a86
EP		 1974 /* read pme_ptr if available */
1975 if (mvm->d3_test_pme_ptr) {
1976 pme_asserted = iwl_trans_read_mem32(mvm->trans,
1977 mvm->d3_test_pme_ptr);
1978 if (pme_asserted)
1979 break;
1980 }
1981
debff618
JB		 1982 if (msleep_interruptible(100))
1983 break;
1984 }
1985
1986 return 0;
1987}
1988
1989static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac,
1990 struct ieee80211_vif *vif)
1991{
78c9df66
EP		 1992 /* skip the one we keep connection on */
1993 if (_data == vif)
1994 return;
1995
debff618
JB		 1996 if (vif->type == NL80211_IFTYPE_STATION)
1997 ieee80211_connection_loss(vif);
1998}
1999
2000static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file)
2001{
2002 struct iwl_mvm *mvm = inode->i_private;
2003 int remaining_time = 10;
2004
2005 mvm->d3_test_active = false;
31ca09dd 2006 rtnl_lock();
debff618 2007 __iwl_mvm_resume(mvm, true);
31ca09dd 2008 rtnl_unlock();
debff618
JB		 2009 iwl_abort_notification_waits(&mvm->notif_wait);
2010 ieee80211_restart_hw(mvm->hw);
2011
2012 /* wait for restart and disconnect all interfaces */
2013 while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2014 remaining_time > 0) {
2015 remaining_time--;
2016 msleep(1000);
2017 }
2018
2019 if (remaining_time == 0)
2020 IWL_ERR(mvm, "Timed out waiting for HW restart to finish!\n");
2021
2022 ieee80211_iterate_active_interfaces_atomic(
2023 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
78c9df66 2024 iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif);
debff618
JB		 2025
2026 ieee80211_wake_queues(mvm->hw);
2027
2028 return 0;
2029}
2030
2031const struct file_operations iwl_dbgfs_d3_test_ops = {
2032 .llseek = no_llseek,
2033 .open = iwl_mvm_d3_test_open,
2034 .read = iwl_mvm_d3_test_read,
2035 .release = iwl_mvm_d3_test_release,
2036};
2037#endif
Linux kernel - Deliverables
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