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mfd: wm8350-i2c: Make sure the i2c regmap functions are compiled
[linux/fpc-iii.git] / drivers / net / wireless / iwlwifi / mvm / d3.c
bloba25f608d8ab4cfc300415667451a5e5ca58c0caa
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 - 2013 Intel Corporation. All rights reserved.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of version 2 of the GNU General Public License as
12 * published by the Free Software Foundation.
13 *
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
22 * USA
23 *
24 * The full GNU General Public License is included in this distribution
25 * in the file called COPYING.
26 *
27 * Contact Information:
28 * Intel Linux Wireless <ilw@linux.intel.com>
29 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
30 *
31 * BSD LICENSE
32 *
33 * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
34 * All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 *
40 * * Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * * Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in
44 * the documentation and/or other materials provided with the
45 * distribution.
46 * * Neither the name Intel Corporation nor the names of its
47 * contributors may be used to endorse or promote products derived
48 * from this software without specific prior written permission.
49 *
50 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
51 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
52 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
53 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
54 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
55 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
56 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
57 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
58 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
59 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
60 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
61 *
62 *****************************************************************************/
63
64 #include <linux/etherdevice.h>
65 #include <linux/ip.h>
66 #include <linux/fs.h>
67 #include <net/cfg80211.h>
68 #include <net/ipv6.h>
69 #include <net/tcp.h>
70 #include "iwl-modparams.h"
71 #include "fw-api.h"
72 #include "mvm.h"
73
74 void iwl_mvm_set_rekey_data(struct ieee80211_hw *hw,
75 struct ieee80211_vif *vif,
76 struct cfg80211_gtk_rekey_data *data)
77 {
78 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
79 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
80
81 if (iwlwifi_mod_params.sw_crypto)
82 return;
83
84 mutex_lock(&mvm->mutex);
85
86 memcpy(mvmvif->rekey_data.kek, data->kek, NL80211_KEK_LEN);
87 memcpy(mvmvif->rekey_data.kck, data->kck, NL80211_KCK_LEN);
88 mvmvif->rekey_data.replay_ctr =
89 cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr));
90 mvmvif->rekey_data.valid = true;
91
92 mutex_unlock(&mvm->mutex);
93 }
94
95 #if IS_ENABLED(CONFIG_IPV6)
96 void iwl_mvm_ipv6_addr_change(struct ieee80211_hw *hw,
97 struct ieee80211_vif *vif,
98 struct inet6_dev *idev)
99 {
100 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
101 struct inet6_ifaddr *ifa;
102 int idx = 0;
103
104 read_lock_bh(&idev->lock);
105 list_for_each_entry(ifa, &idev->addr_list, if_list) {
106 mvmvif->target_ipv6_addrs[idx] = ifa->addr;
107 idx++;
108 if (idx >= IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_MAX)
109 break;
110 }
111 read_unlock_bh(&idev->lock);
112
113 mvmvif->num_target_ipv6_addrs = idx;
114 }
115 #endif
116
117 void iwl_mvm_set_default_unicast_key(struct ieee80211_hw *hw,
118 struct ieee80211_vif *vif, int idx)
119 {
120 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
121
122 mvmvif->tx_key_idx = idx;
123 }
124
125 static void iwl_mvm_convert_p1k(u16 *p1k, __le16 *out)
126 {
127 int i;
128
129 for (i = 0; i < IWL_P1K_SIZE; i++)
130 out[i] = cpu_to_le16(p1k[i]);
131 }
132
133 struct wowlan_key_data {
134 struct iwl_wowlan_rsc_tsc_params_cmd *rsc_tsc;
135 struct iwl_wowlan_tkip_params_cmd *tkip;
136 bool error, use_rsc_tsc, use_tkip;
137 int wep_key_idx;
138 };
139
140 static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw,
141 struct ieee80211_vif *vif,
142 struct ieee80211_sta *sta,
143 struct ieee80211_key_conf *key,
144 void *_data)
145 {
146 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
147 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
148 struct wowlan_key_data *data = _data;
149 struct aes_sc *aes_sc, *aes_tx_sc = NULL;
150 struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
151 struct iwl_p1k_cache *rx_p1ks;
152 u8 *rx_mic_key;
153 struct ieee80211_key_seq seq;
154 u32 cur_rx_iv32 = 0;
155 u16 p1k[IWL_P1K_SIZE];
156 int ret, i;
157
158 mutex_lock(&mvm->mutex);
159
160 switch (key->cipher) {
161 case WLAN_CIPHER_SUITE_WEP40:
162 case WLAN_CIPHER_SUITE_WEP104: { /* hack it for now */
163 struct {
164 struct iwl_mvm_wep_key_cmd wep_key_cmd;
165 struct iwl_mvm_wep_key wep_key;
166 } __packed wkc = {
167 .wep_key_cmd.mac_id_n_color =
168 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
169 mvmvif->color)),
170 .wep_key_cmd.num_keys = 1,
171 /* firmware sets STA_KEY_FLG_WEP_13BYTES */
172 .wep_key_cmd.decryption_type = STA_KEY_FLG_WEP,
173 .wep_key.key_index = key->keyidx,
174 .wep_key.key_size = key->keylen,
175 };
176
177 /*
178 * This will fail -- the key functions don't set support
179 * pairwise WEP keys. However, that's better than silently
180 * failing WoWLAN. Or maybe not?
181 */
182 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
183 break;
184
185 memcpy(&wkc.wep_key.key[3], key->key, key->keylen);
186 if (key->keyidx == mvmvif->tx_key_idx) {
187 /* TX key must be at offset 0 */
188 wkc.wep_key.key_offset = 0;
189 } else {
190 /* others start at 1 */
191 data->wep_key_idx++;
192 wkc.wep_key.key_offset = data->wep_key_idx;
193 }
194
195 ret = iwl_mvm_send_cmd_pdu(mvm, WEP_KEY, CMD_SYNC,
196 sizeof(wkc), &wkc);
197 data->error = ret != 0;
198
199 mvm->ptk_ivlen = key->iv_len;
200 mvm->ptk_icvlen = key->icv_len;
201 mvm->gtk_ivlen = key->iv_len;
202 mvm->gtk_icvlen = key->icv_len;
203
204 /* don't upload key again */
205 goto out_unlock;
206 }
207 default:
208 data->error = true;
209 goto out_unlock;
210 case WLAN_CIPHER_SUITE_AES_CMAC:
211 /*
212 * Ignore CMAC keys -- the WoWLAN firmware doesn't support them
213 * but we also shouldn't abort suspend due to that. It does have
214 * support for the IGTK key renewal, but doesn't really use the
215 * IGTK for anything. This means we could spuriously wake up or
216 * be deauthenticated, but that was considered acceptable.
217 */
218 goto out_unlock;
219 case WLAN_CIPHER_SUITE_TKIP:
220 if (sta) {
221 tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
222 tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
223
224 rx_p1ks = data->tkip->rx_uni;
225
226 ieee80211_get_key_tx_seq(key, &seq);
227 tkip_tx_sc->iv16 = cpu_to_le16(seq.tkip.iv16);
228 tkip_tx_sc->iv32 = cpu_to_le32(seq.tkip.iv32);
229
230 ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k);
231 iwl_mvm_convert_p1k(p1k, data->tkip->tx.p1k);
232
233 memcpy(data->tkip->mic_keys.tx,
234 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
235 IWL_MIC_KEY_SIZE);
236
237 rx_mic_key = data->tkip->mic_keys.rx_unicast;
238 } else {
239 tkip_sc =
240 data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc;
241 rx_p1ks = data->tkip->rx_multi;
242 rx_mic_key = data->tkip->mic_keys.rx_mcast;
243 }
244
245 /*
246 * For non-QoS this relies on the fact that both the uCode and
247 * mac80211 use TID 0 (as they need to to avoid replay attacks)
248 * for checking the IV in the frames.
249 */
250 for (i = 0; i < IWL_NUM_RSC; i++) {
251 ieee80211_get_key_rx_seq(key, i, &seq);
252 tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
253 tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
254 /* wrapping isn't allowed, AP must rekey */
255 if (seq.tkip.iv32 > cur_rx_iv32)
256 cur_rx_iv32 = seq.tkip.iv32;
257 }
258
259 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
260 cur_rx_iv32, p1k);
261 iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k);
262 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
263 cur_rx_iv32 + 1, p1k);
264 iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k);
265
266 memcpy(rx_mic_key,
267 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
268 IWL_MIC_KEY_SIZE);
269
270 data->use_tkip = true;
271 data->use_rsc_tsc = true;
272 break;
273 case WLAN_CIPHER_SUITE_CCMP:
274 if (sta) {
275 u8 *pn = seq.ccmp.pn;
276
277 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
278 aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc;
279
280 ieee80211_get_key_tx_seq(key, &seq);
281 aes_tx_sc->pn = cpu_to_le64((u64)pn[5] |
282 ((u64)pn[4] << 8) |
283 ((u64)pn[3] << 16) |
284 ((u64)pn[2] << 24) |
285 ((u64)pn[1] << 32) |
286 ((u64)pn[0] << 40));
287 } else {
288 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
289 }
290
291 /*
292 * For non-QoS this relies on the fact that both the uCode and
293 * mac80211 use TID 0 for checking the IV in the frames.
294 */
295 for (i = 0; i < IWL_NUM_RSC; i++) {
296 u8 *pn = seq.ccmp.pn;
297
298 ieee80211_get_key_rx_seq(key, i, &seq);
299 aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
300 ((u64)pn[4] << 8) |
301 ((u64)pn[3] << 16) |
302 ((u64)pn[2] << 24) |
303 ((u64)pn[1] << 32) |
304 ((u64)pn[0] << 40));
305 }
306 data->use_rsc_tsc = true;
307 break;
308 }
309
310 /*
311 * The D3 firmware hardcodes the key offset 0 as the key it uses
312 * to transmit packets to the AP, i.e. the PTK.
313 */
314 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
315 key->hw_key_idx = 0;
316 mvm->ptk_ivlen = key->iv_len;
317 mvm->ptk_icvlen = key->icv_len;
318 } else {
319 /*
320 * firmware only supports TSC/RSC for a single key,
321 * so if there are multiple keep overwriting them
322 * with new ones -- this relies on mac80211 doing
323 * list_add_tail().
324 */
325 key->hw_key_idx = 1;
326 mvm->gtk_ivlen = key->iv_len;
327 mvm->gtk_icvlen = key->icv_len;
328 }
329
330 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, true);
331 data->error = ret != 0;
332 out_unlock:
333 mutex_unlock(&mvm->mutex);
334 }
335
336 static int iwl_mvm_send_patterns(struct iwl_mvm *mvm,
337 struct cfg80211_wowlan *wowlan)
338 {
339 struct iwl_wowlan_patterns_cmd *pattern_cmd;
340 struct iwl_host_cmd cmd = {
341 .id = WOWLAN_PATTERNS,
342 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
343 .flags = CMD_SYNC,
344 };
345 int i, err;
346
347 if (!wowlan->n_patterns)
348 return 0;
349
350 cmd.len[0] = sizeof(*pattern_cmd) +
351 wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern);
352
353 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
354 if (!pattern_cmd)
355 return -ENOMEM;
356
357 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
358
359 for (i = 0; i < wowlan->n_patterns; i++) {
360 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
361
362 memcpy(&pattern_cmd->patterns[i].mask,
363 wowlan->patterns[i].mask, mask_len);
364 memcpy(&pattern_cmd->patterns[i].pattern,
365 wowlan->patterns[i].pattern,
366 wowlan->patterns[i].pattern_len);
367 pattern_cmd->patterns[i].mask_size = mask_len;
368 pattern_cmd->patterns[i].pattern_size =
369 wowlan->patterns[i].pattern_len;
370 }
371
372 cmd.data[0] = pattern_cmd;
373 err = iwl_mvm_send_cmd(mvm, &cmd);
374 kfree(pattern_cmd);
375 return err;
376 }
377
378 static int iwl_mvm_send_proto_offload(struct iwl_mvm *mvm,
379 struct ieee80211_vif *vif)
380 {
381 union {
382 struct iwl_proto_offload_cmd_v1 v1;
383 struct iwl_proto_offload_cmd_v2 v2;
384 } cmd = {};
385 struct iwl_proto_offload_cmd_common *common;
386 u32 enabled = 0, size;
387 #if IS_ENABLED(CONFIG_IPV6)
388 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
389 int i;
390
391 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_D3_6_IPV6_ADDRS) {
392 if (mvmvif->num_target_ipv6_addrs) {
393 enabled |= IWL_D3_PROTO_OFFLOAD_NS;
394 memcpy(cmd.v2.ndp_mac_addr, vif->addr, ETH_ALEN);
395 }
396
397 BUILD_BUG_ON(sizeof(cmd.v2.target_ipv6_addr[0]) !=
398 sizeof(mvmvif->target_ipv6_addrs[0]));
399
400 for (i = 0; i < min(mvmvif->num_target_ipv6_addrs,
401 IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V2); i++)
402 memcpy(cmd.v2.target_ipv6_addr[i],
403 &mvmvif->target_ipv6_addrs[i],
404 sizeof(cmd.v2.target_ipv6_addr[i]));
405 } else {
406 if (mvmvif->num_target_ipv6_addrs) {
407 enabled |= IWL_D3_PROTO_OFFLOAD_NS;
408 memcpy(cmd.v1.ndp_mac_addr, vif->addr, ETH_ALEN);
409 }
410
411 BUILD_BUG_ON(sizeof(cmd.v1.target_ipv6_addr[0]) !=
412 sizeof(mvmvif->target_ipv6_addrs[0]));
413
414 for (i = 0; i < min(mvmvif->num_target_ipv6_addrs,
415 IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V1); i++)
416 memcpy(cmd.v1.target_ipv6_addr[i],
417 &mvmvif->target_ipv6_addrs[i],
418 sizeof(cmd.v1.target_ipv6_addr[i]));
419 }
420 #endif
421
422 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_D3_6_IPV6_ADDRS) {
423 common = &cmd.v2.common;
424 size = sizeof(cmd.v2);
425 } else {
426 common = &cmd.v1.common;
427 size = sizeof(cmd.v1);
428 }
429
430 if (vif->bss_conf.arp_addr_cnt) {
431 enabled |= IWL_D3_PROTO_OFFLOAD_ARP;
432 common->host_ipv4_addr = vif->bss_conf.arp_addr_list[0];
433 memcpy(common->arp_mac_addr, vif->addr, ETH_ALEN);
434 }
435
436 if (!enabled)
437 return 0;
438
439 common->enabled = cpu_to_le32(enabled);
440
441 return iwl_mvm_send_cmd_pdu(mvm, PROT_OFFLOAD_CONFIG_CMD, CMD_SYNC,
442 size, &cmd);
443 }
444
445 enum iwl_mvm_tcp_packet_type {
446 MVM_TCP_TX_SYN,
447 MVM_TCP_RX_SYNACK,
448 MVM_TCP_TX_DATA,
449 MVM_TCP_RX_ACK,
450 MVM_TCP_RX_WAKE,
451 MVM_TCP_TX_FIN,
452 };
453
454 static __le16 pseudo_hdr_check(int len, __be32 saddr, __be32 daddr)
455 {
456 __sum16 check = tcp_v4_check(len, saddr, daddr, 0);
457 return cpu_to_le16(be16_to_cpu((__force __be16)check));
458 }
459
460 static void iwl_mvm_build_tcp_packet(struct ieee80211_vif *vif,
461 struct cfg80211_wowlan_tcp *tcp,
462 void *_pkt, u8 *mask,
463 __le16 *pseudo_hdr_csum,
464 enum iwl_mvm_tcp_packet_type ptype)
465 {
466 struct {
467 struct ethhdr eth;
468 struct iphdr ip;
469 struct tcphdr tcp;
470 u8 data[];
471 } __packed *pkt = _pkt;
472 u16 ip_tot_len = sizeof(struct iphdr) + sizeof(struct tcphdr);
473 int i;
474
475 pkt->eth.h_proto = cpu_to_be16(ETH_P_IP),
476 pkt->ip.version = 4;
477 pkt->ip.ihl = 5;
478 pkt->ip.protocol = IPPROTO_TCP;
479
480 switch (ptype) {
481 case MVM_TCP_TX_SYN:
482 case MVM_TCP_TX_DATA:
483 case MVM_TCP_TX_FIN:
484 memcpy(pkt->eth.h_dest, tcp->dst_mac, ETH_ALEN);
485 memcpy(pkt->eth.h_source, vif->addr, ETH_ALEN);
486 pkt->ip.ttl = 128;
487 pkt->ip.saddr = tcp->src;
488 pkt->ip.daddr = tcp->dst;
489 pkt->tcp.source = cpu_to_be16(tcp->src_port);
490 pkt->tcp.dest = cpu_to_be16(tcp->dst_port);
491 /* overwritten for TX SYN later */
492 pkt->tcp.doff = sizeof(struct tcphdr) / 4;
493 pkt->tcp.window = cpu_to_be16(65000);
494 break;
495 case MVM_TCP_RX_SYNACK:
496 case MVM_TCP_RX_ACK:
497 case MVM_TCP_RX_WAKE:
498 memcpy(pkt->eth.h_dest, vif->addr, ETH_ALEN);
499 memcpy(pkt->eth.h_source, tcp->dst_mac, ETH_ALEN);
500 pkt->ip.saddr = tcp->dst;
501 pkt->ip.daddr = tcp->src;
502 pkt->tcp.source = cpu_to_be16(tcp->dst_port);
503 pkt->tcp.dest = cpu_to_be16(tcp->src_port);
504 break;
505 default:
506 WARN_ON(1);
507 return;
508 }
509
510 switch (ptype) {
511 case MVM_TCP_TX_SYN:
512 /* firmware assumes 8 option bytes - 8 NOPs for now */
513 memset(pkt->data, 0x01, 8);
514 ip_tot_len += 8;
515 pkt->tcp.doff = (sizeof(struct tcphdr) + 8) / 4;
516 pkt->tcp.syn = 1;
517 break;
518 case MVM_TCP_TX_DATA:
519 ip_tot_len += tcp->payload_len;
520 memcpy(pkt->data, tcp->payload, tcp->payload_len);
521 pkt->tcp.psh = 1;
522 pkt->tcp.ack = 1;
523 break;
524 case MVM_TCP_TX_FIN:
525 pkt->tcp.fin = 1;
526 pkt->tcp.ack = 1;
527 break;
528 case MVM_TCP_RX_SYNACK:
529 pkt->tcp.syn = 1;
530 pkt->tcp.ack = 1;
531 break;
532 case MVM_TCP_RX_ACK:
533 pkt->tcp.ack = 1;
534 break;
535 case MVM_TCP_RX_WAKE:
536 ip_tot_len += tcp->wake_len;
537 pkt->tcp.psh = 1;
538 pkt->tcp.ack = 1;
539 memcpy(pkt->data, tcp->wake_data, tcp->wake_len);
540 break;
541 }
542
543 switch (ptype) {
544 case MVM_TCP_TX_SYN:
545 case MVM_TCP_TX_DATA:
546 case MVM_TCP_TX_FIN:
547 pkt->ip.tot_len = cpu_to_be16(ip_tot_len);
548 pkt->ip.check = ip_fast_csum(&pkt->ip, pkt->ip.ihl);
549 break;
550 case MVM_TCP_RX_WAKE:
551 for (i = 0; i < DIV_ROUND_UP(tcp->wake_len, 8); i++) {
552 u8 tmp = tcp->wake_mask[i];
553 mask[i + 6] |= tmp << 6;
554 if (i + 1 < DIV_ROUND_UP(tcp->wake_len, 8))
555 mask[i + 7] = tmp >> 2;
556 }
557 /* fall through for ethernet/IP/TCP headers mask */
558 case MVM_TCP_RX_SYNACK:
559 case MVM_TCP_RX_ACK:
560 mask[0] = 0xff; /* match ethernet */
561 /*
562 * match ethernet, ip.version, ip.ihl
563 * the ip.ihl half byte is really masked out by firmware
564 */
565 mask[1] = 0x7f;
566 mask[2] = 0x80; /* match ip.protocol */
567 mask[3] = 0xfc; /* match ip.saddr, ip.daddr */
568 mask[4] = 0x3f; /* match ip.daddr, tcp.source, tcp.dest */
569 mask[5] = 0x80; /* match tcp flags */
570 /* leave rest (0 or set for MVM_TCP_RX_WAKE) */
571 break;
572 };
573
574 *pseudo_hdr_csum = pseudo_hdr_check(ip_tot_len - sizeof(struct iphdr),
575 pkt->ip.saddr, pkt->ip.daddr);
576 }
577
578 static int iwl_mvm_send_remote_wake_cfg(struct iwl_mvm *mvm,
579 struct ieee80211_vif *vif,
580 struct cfg80211_wowlan_tcp *tcp)
581 {
582 struct iwl_wowlan_remote_wake_config *cfg;
583 struct iwl_host_cmd cmd = {
584 .id = REMOTE_WAKE_CONFIG_CMD,
585 .len = { sizeof(*cfg), },
586 .dataflags = { IWL_HCMD_DFL_NOCOPY, },
587 .flags = CMD_SYNC,
588 };
589 int ret;
590
591 if (!tcp)
592 return 0;
593
594 cfg = kzalloc(sizeof(*cfg), GFP_KERNEL);
595 if (!cfg)
596 return -ENOMEM;
597 cmd.data[0] = cfg;
598
599 cfg->max_syn_retries = 10;
600 cfg->max_data_retries = 10;
601 cfg->tcp_syn_ack_timeout = 1; /* seconds */
602 cfg->tcp_ack_timeout = 1; /* seconds */
603
604 /* SYN (TX) */
605 iwl_mvm_build_tcp_packet(
606 vif, tcp, cfg->syn_tx.data, NULL,
607 &cfg->syn_tx.info.tcp_pseudo_header_checksum,
608 MVM_TCP_TX_SYN);
609 cfg->syn_tx.info.tcp_payload_length = 0;
610
611 /* SYN/ACK (RX) */
612 iwl_mvm_build_tcp_packet(
613 vif, tcp, cfg->synack_rx.data, cfg->synack_rx.rx_mask,
614 &cfg->synack_rx.info.tcp_pseudo_header_checksum,
615 MVM_TCP_RX_SYNACK);
616 cfg->synack_rx.info.tcp_payload_length = 0;
617
618 /* KEEPALIVE/ACK (TX) */
619 iwl_mvm_build_tcp_packet(
620 vif, tcp, cfg->keepalive_tx.data, NULL,
621 &cfg->keepalive_tx.info.tcp_pseudo_header_checksum,
622 MVM_TCP_TX_DATA);
623 cfg->keepalive_tx.info.tcp_payload_length =
624 cpu_to_le16(tcp->payload_len);
625 cfg->sequence_number_offset = tcp->payload_seq.offset;
626 /* length must be 0..4, the field is little endian */
627 cfg->sequence_number_length = tcp->payload_seq.len;
628 cfg->initial_sequence_number = cpu_to_le32(tcp->payload_seq.start);
629 cfg->keepalive_interval = cpu_to_le16(tcp->data_interval);
630 if (tcp->payload_tok.len) {
631 cfg->token_offset = tcp->payload_tok.offset;
632 cfg->token_length = tcp->payload_tok.len;
633 cfg->num_tokens =
634 cpu_to_le16(tcp->tokens_size % tcp->payload_tok.len);
635 memcpy(cfg->tokens, tcp->payload_tok.token_stream,
636 tcp->tokens_size);
637 } else {
638 /* set tokens to max value to almost never run out */
639 cfg->num_tokens = cpu_to_le16(65535);
640 }
641
642 /* ACK (RX) */
643 iwl_mvm_build_tcp_packet(
644 vif, tcp, cfg->keepalive_ack_rx.data,
645 cfg->keepalive_ack_rx.rx_mask,
646 &cfg->keepalive_ack_rx.info.tcp_pseudo_header_checksum,
647 MVM_TCP_RX_ACK);
648 cfg->keepalive_ack_rx.info.tcp_payload_length = 0;
649
650 /* WAKEUP (RX) */
651 iwl_mvm_build_tcp_packet(
652 vif, tcp, cfg->wake_rx.data, cfg->wake_rx.rx_mask,
653 &cfg->wake_rx.info.tcp_pseudo_header_checksum,
654 MVM_TCP_RX_WAKE);
655 cfg->wake_rx.info.tcp_payload_length =
656 cpu_to_le16(tcp->wake_len);
657
658 /* FIN */
659 iwl_mvm_build_tcp_packet(
660 vif, tcp, cfg->fin_tx.data, NULL,
661 &cfg->fin_tx.info.tcp_pseudo_header_checksum,
662 MVM_TCP_TX_FIN);
663 cfg->fin_tx.info.tcp_payload_length = 0;
664
665 ret = iwl_mvm_send_cmd(mvm, &cmd);
666 kfree(cfg);
667
668 return ret;
669 }
670
671 struct iwl_d3_iter_data {
672 struct iwl_mvm *mvm;
673 struct ieee80211_vif *vif;
674 bool error;
675 };
676
677 static void iwl_mvm_d3_iface_iterator(void *_data, u8 *mac,
678 struct ieee80211_vif *vif)
679 {
680 struct iwl_d3_iter_data *data = _data;
681 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
682
683 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
684 return;
685
686 if (mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT)
687 return;
688
689 if (data->vif) {
690 IWL_ERR(data->mvm, "More than one managed interface active!\n");
691 data->error = true;
692 return;
693 }
694
695 data->vif = vif;
696 }
697
698 static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
699 struct ieee80211_sta *ap_sta)
700 {
701 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
702 struct ieee80211_chanctx_conf *ctx;
703 u8 chains_static, chains_dynamic;
704 struct cfg80211_chan_def chandef;
705 int ret, i;
706 struct iwl_binding_cmd binding_cmd = {};
707 struct iwl_time_quota_cmd quota_cmd = {};
708 u32 status;
709
710 /* add back the PHY */
711 if (WARN_ON(!mvmvif->phy_ctxt))
712 return -EINVAL;
713
714 rcu_read_lock();
715 ctx = rcu_dereference(vif->chanctx_conf);
716 if (WARN_ON(!ctx)) {
717 rcu_read_unlock();
718 return -EINVAL;
719 }
720 chandef = ctx->def;
721 chains_static = ctx->rx_chains_static;
722 chains_dynamic = ctx->rx_chains_dynamic;
723 rcu_read_unlock();
724
725 ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt, &chandef,
726 chains_static, chains_dynamic);
727 if (ret)
728 return ret;
729
730 /* add back the MAC */
731 mvmvif->uploaded = false;
732
733 if (WARN_ON(!vif->bss_conf.assoc))
734 return -EINVAL;
735 /* hack */
736 vif->bss_conf.assoc = false;
737 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
738 vif->bss_conf.assoc = true;
739 if (ret)
740 return ret;
741
742 /* add back binding - XXX refactor? */
743 binding_cmd.id_and_color =
744 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
745 mvmvif->phy_ctxt->color));
746 binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD);
747 binding_cmd.phy =
748 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
749 mvmvif->phy_ctxt->color));
750 binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
751 mvmvif->color));
752 for (i = 1; i < MAX_MACS_IN_BINDING; i++)
753 binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID);
754
755 status = 0;
756 ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD,
757 sizeof(binding_cmd), &binding_cmd,
758 &status);
759 if (ret) {
760 IWL_ERR(mvm, "Failed to add binding: %d\n", ret);
761 return ret;
762 }
763
764 if (status) {
765 IWL_ERR(mvm, "Binding command failed: %u\n", status);
766 return -EIO;
767 }
768
769 ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false);
770 if (ret)
771 return ret;
772 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], ap_sta);
773
774 ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
775 if (ret)
776 return ret;
777
778 /* and some quota */
779 quota_cmd.quotas[0].id_and_color =
780 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
781 mvmvif->phy_ctxt->color));
782 quota_cmd.quotas[0].quota = cpu_to_le32(100);
783 quota_cmd.quotas[0].max_duration = cpu_to_le32(1000);
784
785 for (i = 1; i < MAX_BINDINGS; i++)
786 quota_cmd.quotas[i].id_and_color = cpu_to_le32(FW_CTXT_INVALID);
787
788 ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, CMD_SYNC,
789 sizeof(quota_cmd), &quota_cmd);
790 if (ret)
791 IWL_ERR(mvm, "Failed to send quota: %d\n", ret);
792
793 return 0;
794 }
795
796 static int __iwl_mvm_suspend(struct ieee80211_hw *hw,
797 struct cfg80211_wowlan *wowlan,
798 bool test)
799 {
800 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
801 struct iwl_d3_iter_data suspend_iter_data = {
802 .mvm = mvm,
803 };
804 struct ieee80211_vif *vif;
805 struct iwl_mvm_vif *mvmvif;
806 struct ieee80211_sta *ap_sta;
807 struct iwl_mvm_sta *mvm_ap_sta;
808 struct iwl_wowlan_config_cmd wowlan_config_cmd = {};
809 struct iwl_wowlan_kek_kck_material_cmd kek_kck_cmd = {};
810 struct iwl_wowlan_tkip_params_cmd tkip_cmd = {};
811 struct iwl_d3_manager_config d3_cfg_cmd_data = {
812 /*
813 * Program the minimum sleep time to 10 seconds, as many
814 * platforms have issues processing a wakeup signal while
815 * still being in the process of suspending.
816 */
817 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000),
818 };
819 struct iwl_host_cmd d3_cfg_cmd = {
820 .id = D3_CONFIG_CMD,
821 .flags = CMD_SYNC | CMD_WANT_SKB,
822 .data[0] = &d3_cfg_cmd_data,
823 .len[0] = sizeof(d3_cfg_cmd_data),
824 };
825 struct wowlan_key_data key_data = {
826 .use_rsc_tsc = false,
827 .tkip = &tkip_cmd,
828 .use_tkip = false,
829 };
830 int ret, i;
831 int len __maybe_unused;
832 u16 seq;
833 u8 old_aux_sta_id, old_ap_sta_id = IWL_MVM_STATION_COUNT;
834
835 if (!wowlan) {
836 /*
837 * mac80211 shouldn't get here, but for D3 test
838 * it doesn't warrant a warning
839 */
840 WARN_ON(!test);
841 return -EINVAL;
842 }
843
844 key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
845 if (!key_data.rsc_tsc)
846 return -ENOMEM;
847
848 mutex_lock(&mvm->mutex);
849
850 old_aux_sta_id = mvm->aux_sta.sta_id;
851
852 /* see if there's only a single BSS vif and it's associated */
853 ieee80211_iterate_active_interfaces_atomic(
854 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
855 iwl_mvm_d3_iface_iterator, &suspend_iter_data);
856
857 if (suspend_iter_data.error || !suspend_iter_data.vif) {
858 ret = 1;
859 goto out_noreset;
860 }
861
862 vif = suspend_iter_data.vif;
863 mvmvif = iwl_mvm_vif_from_mac80211(vif);
864
865 ap_sta = rcu_dereference_protected(
866 mvm->fw_id_to_mac_id[mvmvif->ap_sta_id],
867 lockdep_is_held(&mvm->mutex));
868 if (IS_ERR_OR_NULL(ap_sta)) {
869 ret = -EINVAL;
870 goto out_noreset;
871 }
872
873 mvm_ap_sta = (struct iwl_mvm_sta *)ap_sta->drv_priv;
874
875 /*
876 * The D3 firmware still hardcodes the AP station ID for the
877 * BSS we're associated with as 0. Store the real STA ID here
878 * and assign 0. When we leave this function, we'll restore
879 * the original value for the resume code.
880 */
881 old_ap_sta_id = mvm_ap_sta->sta_id;
882 mvm_ap_sta->sta_id = 0;
883 mvmvif->ap_sta_id = 0;
884
885 /* TODO: wowlan_config_cmd.wowlan_ba_teardown_tids */
886
887 wowlan_config_cmd.is_11n_connection = ap_sta->ht_cap.ht_supported;
888
889 /*
890 * We know the last used seqno, and the uCode expects to know that
891 * one, it will increment before TX.
892 */
893 seq = mvm_ap_sta->last_seq_ctl & IEEE80211_SCTL_SEQ;
894 wowlan_config_cmd.non_qos_seq = cpu_to_le16(seq);
895
896 /*
897 * For QoS counters, we store the one to use next, so subtract 0x10
898 * since the uCode will add 0x10 *before* using the value while we
899 * increment after using the value (i.e. store the next value to use).
900 */
901 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
902 seq = mvm_ap_sta->tid_data[i].seq_number;
903 seq -= 0x10;
904 wowlan_config_cmd.qos_seq[i] = cpu_to_le16(seq);
905 }
906
907 if (wowlan->disconnect)
908 wowlan_config_cmd.wakeup_filter |=
909 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
910 IWL_WOWLAN_WAKEUP_LINK_CHANGE);
911 if (wowlan->magic_pkt)
912 wowlan_config_cmd.wakeup_filter |=
913 cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET);
914 if (wowlan->gtk_rekey_failure)
915 wowlan_config_cmd.wakeup_filter |=
916 cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
917 if (wowlan->eap_identity_req)
918 wowlan_config_cmd.wakeup_filter |=
919 cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ);
920 if (wowlan->four_way_handshake)
921 wowlan_config_cmd.wakeup_filter |=
922 cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
923 if (wowlan->n_patterns)
924 wowlan_config_cmd.wakeup_filter |=
925 cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH);
926
927 if (wowlan->rfkill_release)
928 wowlan_config_cmd.wakeup_filter |=
929 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
930
931 if (wowlan->tcp) {
932 /*
933 * Set the "link change" (really "link lost") flag as well
934 * since that implies losing the TCP connection.
935 */
936 wowlan_config_cmd.wakeup_filter |=
937 cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS |
938 IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE |
939 IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET |
940 IWL_WOWLAN_WAKEUP_LINK_CHANGE);
941 }
942
943 iwl_mvm_cancel_scan(mvm);
944
945 iwl_trans_stop_device(mvm->trans);
946
947 /*
948 * Set the HW restart bit -- this is mostly true as we're
949 * going to load new firmware and reprogram that, though
950 * the reprogramming is going to be manual to avoid adding
951 * all the MACs that aren't support.
952 * We don't have to clear up everything though because the
953 * reprogramming is manual. When we resume, we'll actually
954 * go through a proper restart sequence again to switch
955 * back to the runtime firmware image.
956 */
957 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
958
959 /* We reprogram keys and shouldn't allocate new key indices */
960 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
961
962 mvm->ptk_ivlen = 0;
963 mvm->ptk_icvlen = 0;
964 mvm->ptk_ivlen = 0;
965 mvm->ptk_icvlen = 0;
966
967 /*
968 * The D3 firmware still hardcodes the AP station ID for the
969 * BSS we're associated with as 0. As a result, we have to move
970 * the auxiliary station to ID 1 so the ID 0 remains free for
971 * the AP station for later.
972 * We set the sta_id to 1 here, and reset it to its previous
973 * value (that we stored above) later.
974 */
975 mvm->aux_sta.sta_id = 1;
976
977 ret = iwl_mvm_load_d3_fw(mvm);
978 if (ret)
979 goto out;
980
981 ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta);
982 if (ret)
983 goto out;
984
985 if (!iwlwifi_mod_params.sw_crypto) {
986 /*
987 * This needs to be unlocked due to lock ordering
988 * constraints. Since we're in the suspend path
989 * that isn't really a problem though.
990 */
991 mutex_unlock(&mvm->mutex);
992 ieee80211_iter_keys(mvm->hw, vif,
993 iwl_mvm_wowlan_program_keys,
994 &key_data);
995 mutex_lock(&mvm->mutex);
996 if (key_data.error) {
997 ret = -EIO;
998 goto out;
999 }
1000
1001 if (key_data.use_rsc_tsc) {
1002 struct iwl_host_cmd rsc_tsc_cmd = {
1003 .id = WOWLAN_TSC_RSC_PARAM,
1004 .flags = CMD_SYNC,
1005 .data[0] = key_data.rsc_tsc,
1006 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1007 .len[0] = sizeof(*key_data.rsc_tsc),
1008 };
1009
1010 ret = iwl_mvm_send_cmd(mvm, &rsc_tsc_cmd);
1011 if (ret)
1012 goto out;
1013 }
1014
1015 if (key_data.use_tkip) {
1016 ret = iwl_mvm_send_cmd_pdu(mvm,
1017 WOWLAN_TKIP_PARAM,
1018 CMD_SYNC, sizeof(tkip_cmd),
1019 &tkip_cmd);
1020 if (ret)
1021 goto out;
1022 }
1023
1024 if (mvmvif->rekey_data.valid) {
1025 memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
1026 memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck,
1027 NL80211_KCK_LEN);
1028 kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
1029 memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek,
1030 NL80211_KEK_LEN);
1031 kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
1032 kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr;
1033
1034 ret = iwl_mvm_send_cmd_pdu(mvm,
1035 WOWLAN_KEK_KCK_MATERIAL,
1036 CMD_SYNC,
1037 sizeof(kek_kck_cmd),
1038 &kek_kck_cmd);
1039 if (ret)
1040 goto out;
1041 }
1042 }
1043
1044 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION,
1045 CMD_SYNC, sizeof(wowlan_config_cmd),
1046 &wowlan_config_cmd);
1047 if (ret)
1048 goto out;
1049
1050 ret = iwl_mvm_send_patterns(mvm, wowlan);
1051 if (ret)
1052 goto out;
1053
1054 ret = iwl_mvm_send_proto_offload(mvm, vif);
1055 if (ret)
1056 goto out;
1057
1058 ret = iwl_mvm_send_remote_wake_cfg(mvm, vif, wowlan->tcp);
1059 if (ret)
1060 goto out;
1061
1062 ret = iwl_mvm_power_update_mode(mvm, vif);
1063 if (ret)
1064 goto out;
1065
1066 #ifdef CONFIG_IWLWIFI_DEBUGFS
1067 if (mvm->d3_wake_sysassert)
1068 d3_cfg_cmd_data.wakeup_flags |=
1069 cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR);
1070 #endif
1071
1072 /* must be last -- this switches firmware state */
1073 ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd);
1074 if (ret)
1075 goto out;
1076 #ifdef CONFIG_IWLWIFI_DEBUGFS
1077 len = le32_to_cpu(d3_cfg_cmd.resp_pkt->len_n_flags) &
1078 FH_RSCSR_FRAME_SIZE_MSK;
1079 if (len >= sizeof(u32) * 2) {
1080 mvm->d3_test_pme_ptr =
1081 le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data);
1082 } else if (test) {
1083 /* in test mode we require the pointer */
1084 ret = -EIO;
1085 goto out;
1086 }
1087 #endif
1088 iwl_free_resp(&d3_cfg_cmd);
1089
1090 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1091
1092 iwl_trans_d3_suspend(mvm->trans, test);
1093 out:
1094 mvm->aux_sta.sta_id = old_aux_sta_id;
1095 mvm_ap_sta->sta_id = old_ap_sta_id;
1096 mvmvif->ap_sta_id = old_ap_sta_id;
1097 out_noreset:
1098 kfree(key_data.rsc_tsc);
1099 if (ret < 0)
1100 ieee80211_restart_hw(mvm->hw);
1101
1102 mutex_unlock(&mvm->mutex);
1103
1104 return ret;
1105 }
1106
1107 int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
1108 {
1109 return __iwl_mvm_suspend(hw, wowlan, false);
1110 }
1111
1112 static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm,
1113 struct ieee80211_vif *vif,
1114 struct iwl_wowlan_status *status)
1115 {
1116 struct sk_buff *pkt = NULL;
1117 struct cfg80211_wowlan_wakeup wakeup = {
1118 .pattern_idx = -1,
1119 };
1120 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
1121 u32 reasons = le32_to_cpu(status->wakeup_reasons);
1122
1123 if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
1124 wakeup_report = NULL;
1125 goto report;
1126 }
1127
1128 if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET)
1129 wakeup.magic_pkt = true;
1130
1131 if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN)
1132 wakeup.pattern_idx =
1133 le16_to_cpu(status->pattern_number);
1134
1135 if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1136 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH))
1137 wakeup.disconnect = true;
1138
1139 if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)
1140 wakeup.gtk_rekey_failure = true;
1141
1142 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
1143 wakeup.rfkill_release = true;
1144
1145 if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST)
1146 wakeup.eap_identity_req = true;
1147
1148 if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE)
1149 wakeup.four_way_handshake = true;
1150
1151 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS)
1152 wakeup.tcp_connlost = true;
1153
1154 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE)
1155 wakeup.tcp_nomoretokens = true;
1156
1157 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET)
1158 wakeup.tcp_match = true;
1159
1160 if (status->wake_packet_bufsize) {
1161 int pktsize = le32_to_cpu(status->wake_packet_bufsize);
1162 int pktlen = le32_to_cpu(status->wake_packet_length);
1163 const u8 *pktdata = status->wake_packet;
1164 struct ieee80211_hdr *hdr = (void *)pktdata;
1165 int truncated = pktlen - pktsize;
1166
1167 /* this would be a firmware bug */
1168 if (WARN_ON_ONCE(truncated < 0))
1169 truncated = 0;
1170
1171 if (ieee80211_is_data(hdr->frame_control)) {
1172 int hdrlen = ieee80211_hdrlen(hdr->frame_control);
1173 int ivlen = 0, icvlen = 4; /* also FCS */
1174
1175 pkt = alloc_skb(pktsize, GFP_KERNEL);
1176 if (!pkt)
1177 goto report;
1178
1179 memcpy(skb_put(pkt, hdrlen), pktdata, hdrlen);
1180 pktdata += hdrlen;
1181 pktsize -= hdrlen;
1182
1183 if (ieee80211_has_protected(hdr->frame_control)) {
1184 /*
1185 * This is unlocked and using gtk_i(c)vlen,
1186 * but since everything is under RTNL still
1187 * that's not really a problem - changing
1188 * it would be difficult.
1189 */
1190 if (is_multicast_ether_addr(hdr->addr1)) {
1191 ivlen = mvm->gtk_ivlen;
1192 icvlen += mvm->gtk_icvlen;
1193 } else {
1194 ivlen = mvm->ptk_ivlen;
1195 icvlen += mvm->ptk_icvlen;
1196 }
1197 }
1198
1199 /* if truncated, FCS/ICV is (partially) gone */
1200 if (truncated >= icvlen) {
1201 icvlen = 0;
1202 truncated -= icvlen;
1203 } else {
1204 icvlen -= truncated;
1205 truncated = 0;
1206 }
1207
1208 pktsize -= ivlen + icvlen;
1209 pktdata += ivlen;
1210
1211 memcpy(skb_put(pkt, pktsize), pktdata, pktsize);
1212
1213 if (ieee80211_data_to_8023(pkt, vif->addr, vif->type))
1214 goto report;
1215 wakeup.packet = pkt->data;
1216 wakeup.packet_present_len = pkt->len;
1217 wakeup.packet_len = pkt->len - truncated;
1218 wakeup.packet_80211 = false;
1219 } else {
1220 int fcslen = 4;
1221
1222 if (truncated >= 4) {
1223 truncated -= 4;
1224 fcslen = 0;
1225 } else {
1226 fcslen -= truncated;
1227 truncated = 0;
1228 }
1229 pktsize -= fcslen;
1230 wakeup.packet = status->wake_packet;
1231 wakeup.packet_present_len = pktsize;
1232 wakeup.packet_len = pktlen - truncated;
1233 wakeup.packet_80211 = true;
1234 }
1235 }
1236
1237 report:
1238 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
1239 kfree_skb(pkt);
1240 }
1241
1242 /* releases the MVM mutex */
1243 static void iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm,
1244 struct ieee80211_vif *vif)
1245 {
1246 u32 base = mvm->error_event_table;
1247 struct error_table_start {
1248 /* cf. struct iwl_error_event_table */
1249 u32 valid;
1250 u32 error_id;
1251 } err_info;
1252 struct iwl_host_cmd cmd = {
1253 .id = WOWLAN_GET_STATUSES,
1254 .flags = CMD_SYNC | CMD_WANT_SKB,
1255 };
1256 struct iwl_wowlan_status *status;
1257 int ret, len;
1258
1259 iwl_trans_read_mem_bytes(mvm->trans, base,
1260 &err_info, sizeof(err_info));
1261
1262 if (err_info.valid) {
1263 IWL_INFO(mvm, "error table is valid (%d)\n",
1264 err_info.valid);
1265 if (err_info.error_id == RF_KILL_INDICATOR_FOR_WOWLAN) {
1266 struct cfg80211_wowlan_wakeup wakeup = {
1267 .rfkill_release = true,
1268 };
1269 ieee80211_report_wowlan_wakeup(vif, &wakeup,
1270 GFP_KERNEL);
1271 }
1272 goto out_unlock;
1273 }
1274
1275 /* only for tracing for now */
1276 ret = iwl_mvm_send_cmd_pdu(mvm, OFFLOADS_QUERY_CMD, CMD_SYNC, 0, NULL);
1277 if (ret)
1278 IWL_ERR(mvm, "failed to query offload statistics (%d)\n", ret);
1279
1280 ret = iwl_mvm_send_cmd(mvm, &cmd);
1281 if (ret) {
1282 IWL_ERR(mvm, "failed to query status (%d)\n", ret);
1283 goto out_unlock;
1284 }
1285
1286 /* RF-kill already asserted again... */
1287 if (!cmd.resp_pkt)
1288 goto out_unlock;
1289
1290 len = le32_to_cpu(cmd.resp_pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
1291 if (len - sizeof(struct iwl_cmd_header) < sizeof(*status)) {
1292 IWL_ERR(mvm, "Invalid WoWLAN status response!\n");
1293 goto out_free_resp;
1294 }
1295
1296 status = (void *)cmd.resp_pkt->data;
1297
1298 if (len - sizeof(struct iwl_cmd_header) !=
1299 sizeof(*status) +
1300 ALIGN(le32_to_cpu(status->wake_packet_bufsize), 4)) {
1301 IWL_ERR(mvm, "Invalid WoWLAN status response!\n");
1302 goto out_free_resp;
1303 }
1304
1305 /* now we have all the data we need, unlock to avoid mac80211 issues */
1306 mutex_unlock(&mvm->mutex);
1307
1308 iwl_mvm_report_wakeup_reasons(mvm, vif, status);
1309 iwl_free_resp(&cmd);
1310 return;
1311
1312 out_free_resp:
1313 iwl_free_resp(&cmd);
1314 out_unlock:
1315 mutex_unlock(&mvm->mutex);
1316 }
1317
1318 static void iwl_mvm_read_d3_sram(struct iwl_mvm *mvm)
1319 {
1320 #ifdef CONFIG_IWLWIFI_DEBUGFS
1321 const struct fw_img *img = &mvm->fw->img[IWL_UCODE_WOWLAN];
1322 u32 len = img->sec[IWL_UCODE_SECTION_DATA].len;
1323 u32 offs = img->sec[IWL_UCODE_SECTION_DATA].offset;
1324
1325 if (!mvm->store_d3_resume_sram)
1326 return;
1327
1328 if (!mvm->d3_resume_sram) {
1329 mvm->d3_resume_sram = kzalloc(len, GFP_KERNEL);
1330 if (!mvm->d3_resume_sram)
1331 return;
1332 }
1333
1334 iwl_trans_read_mem_bytes(mvm->trans, offs, mvm->d3_resume_sram, len);
1335 #endif
1336 }
1337
1338 static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test)
1339 {
1340 struct iwl_d3_iter_data resume_iter_data = {
1341 .mvm = mvm,
1342 };
1343 struct ieee80211_vif *vif = NULL;
1344 int ret;
1345 enum iwl_d3_status d3_status;
1346
1347 mutex_lock(&mvm->mutex);
1348
1349 /* get the BSS vif pointer again */
1350 ieee80211_iterate_active_interfaces_atomic(
1351 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1352 iwl_mvm_d3_iface_iterator, &resume_iter_data);
1353
1354 if (WARN_ON(resume_iter_data.error || !resume_iter_data.vif))
1355 goto out_unlock;
1356
1357 vif = resume_iter_data.vif;
1358
1359 ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test);
1360 if (ret)
1361 goto out_unlock;
1362
1363 if (d3_status != IWL_D3_STATUS_ALIVE) {
1364 IWL_INFO(mvm, "Device was reset during suspend\n");
1365 goto out_unlock;
1366 }
1367
1368 /* query SRAM first in case we want event logging */
1369 iwl_mvm_read_d3_sram(mvm);
1370
1371 iwl_mvm_query_wakeup_reasons(mvm, vif);
1372 /* has unlocked the mutex, so skip that */
1373 goto out;
1374
1375 out_unlock:
1376 mutex_unlock(&mvm->mutex);
1377
1378 out:
1379 if (!test && vif)
1380 ieee80211_resume_disconnect(vif);
1381
1382 /* return 1 to reconfigure the device */
1383 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1384 return 1;
1385 }
1386
1387 int iwl_mvm_resume(struct ieee80211_hw *hw)
1388 {
1389 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1390
1391 return __iwl_mvm_resume(mvm, false);
1392 }
1393
1394 void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled)
1395 {
1396 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1397
1398 device_set_wakeup_enable(mvm->trans->dev, enabled);
1399 }
1400
1401 #ifdef CONFIG_IWLWIFI_DEBUGFS
1402 static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file)
1403 {
1404 struct iwl_mvm *mvm = inode->i_private;
1405 int err;
1406
1407 if (mvm->d3_test_active)
1408 return -EBUSY;
1409
1410 file->private_data = inode->i_private;
1411
1412 ieee80211_stop_queues(mvm->hw);
1413 synchronize_net();
1414
1415 /* start pseudo D3 */
1416 rtnl_lock();
1417 err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true);
1418 rtnl_unlock();
1419 if (err > 0)
1420 err = -EINVAL;
1421 if (err) {
1422 ieee80211_wake_queues(mvm->hw);
1423 return err;
1424 }
1425 mvm->d3_test_active = true;
1426 return 0;
1427 }
1428
1429 static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf,
1430 size_t count, loff_t *ppos)
1431 {
1432 struct iwl_mvm *mvm = file->private_data;
1433 u32 pme_asserted;
1434
1435 while (true) {
1436 pme_asserted = iwl_trans_read_mem32(mvm->trans,
1437 mvm->d3_test_pme_ptr);
1438 if (pme_asserted)
1439 break;
1440 if (msleep_interruptible(100))
1441 break;
1442 }
1443
1444 return 0;
1445 }
1446
1447 static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac,
1448 struct ieee80211_vif *vif)
1449 {
1450 if (vif->type == NL80211_IFTYPE_STATION)
1451 ieee80211_connection_loss(vif);
1452 }
1453
1454 static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file)
1455 {
1456 struct iwl_mvm *mvm = inode->i_private;
1457 int remaining_time = 10;
1458
1459 mvm->d3_test_active = false;
1460 __iwl_mvm_resume(mvm, true);
1461 iwl_abort_notification_waits(&mvm->notif_wait);
1462 ieee80211_restart_hw(mvm->hw);
1463
1464 /* wait for restart and disconnect all interfaces */
1465 while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
1466 remaining_time > 0) {
1467 remaining_time--;
1468 msleep(1000);
1469 }
1470
1471 if (remaining_time == 0)
1472 IWL_ERR(mvm, "Timed out waiting for HW restart to finish!\n");
1473
1474 ieee80211_iterate_active_interfaces_atomic(
1475 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1476 iwl_mvm_d3_test_disconn_work_iter, NULL);
1477
1478 ieee80211_wake_queues(mvm->hw);
1479
1480 return 0;
1481 }
1482
1483 const struct file_operations iwl_dbgfs_d3_test_ops = {
1484 .llseek = no_llseek,
1485 .open = iwl_mvm_d3_test_open,
1486 .read = iwl_mvm_d3_test_read,
1487 .release = iwl_mvm_d3_test_release,
1488 };
1489 #endif
Linux with added FPC-III support