d3.c revision d15a747fc8462b3f7a40ba5c16678a38f71e12c8
1/****************************************************************************** 2 * 3 * This file is provided under a dual BSD/GPLv2 license. When using or 4 * redistributing this file, you may do so under either license. 5 * 6 * GPL LICENSE SUMMARY 7 * 8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 9 * 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 - 2014 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 <net/addrconf.h> 71#include "iwl-modparams.h" 72#include "fw-api.h" 73#include "mvm.h" 74 75void iwl_mvm_set_rekey_data(struct ieee80211_hw *hw, 76 struct ieee80211_vif *vif, 77 struct cfg80211_gtk_rekey_data *data) 78{ 79 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 80 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 81 82 if (iwlwifi_mod_params.sw_crypto) 83 return; 84 85 mutex_lock(&mvm->mutex); 86 87 memcpy(mvmvif->rekey_data.kek, data->kek, NL80211_KEK_LEN); 88 memcpy(mvmvif->rekey_data.kck, data->kck, NL80211_KCK_LEN); 89 mvmvif->rekey_data.replay_ctr = 90 cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr)); 91 mvmvif->rekey_data.valid = true; 92 93 mutex_unlock(&mvm->mutex); 94} 95 96#if IS_ENABLED(CONFIG_IPV6) 97void iwl_mvm_ipv6_addr_change(struct ieee80211_hw *hw, 98 struct ieee80211_vif *vif, 99 struct inet6_dev *idev) 100{ 101 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 102 struct inet6_ifaddr *ifa; 103 int idx = 0; 104 105 read_lock_bh(&idev->lock); 106 list_for_each_entry(ifa, &idev->addr_list, if_list) { 107 mvmvif->target_ipv6_addrs[idx] = ifa->addr; 108 idx++; 109 if (idx >= IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_MAX) 110 break; 111 } 112 read_unlock_bh(&idev->lock); 113 114 mvmvif->num_target_ipv6_addrs = idx; 115} 116#endif 117 118void iwl_mvm_set_default_unicast_key(struct ieee80211_hw *hw, 119 struct ieee80211_vif *vif, int idx) 120{ 121 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 122 123 mvmvif->tx_key_idx = idx; 124} 125 126static void iwl_mvm_convert_p1k(u16 *p1k, __le16 *out) 127{ 128 int i; 129 130 for (i = 0; i < IWL_P1K_SIZE; i++) 131 out[i] = cpu_to_le16(p1k[i]); 132} 133 134struct wowlan_key_data { 135 struct iwl_wowlan_rsc_tsc_params_cmd *rsc_tsc; 136 struct iwl_wowlan_tkip_params_cmd *tkip; 137 bool error, use_rsc_tsc, use_tkip; 138 int wep_key_idx; 139}; 140 141static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw, 142 struct ieee80211_vif *vif, 143 struct ieee80211_sta *sta, 144 struct ieee80211_key_conf *key, 145 void *_data) 146{ 147 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 148 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 149 struct wowlan_key_data *data = _data; 150 struct aes_sc *aes_sc, *aes_tx_sc = NULL; 151 struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL; 152 struct iwl_p1k_cache *rx_p1ks; 153 u8 *rx_mic_key; 154 struct ieee80211_key_seq seq; 155 u32 cur_rx_iv32 = 0; 156 u16 p1k[IWL_P1K_SIZE]; 157 int ret, i; 158 159 mutex_lock(&mvm->mutex); 160 161 switch (key->cipher) { 162 case WLAN_CIPHER_SUITE_WEP40: 163 case WLAN_CIPHER_SUITE_WEP104: { /* hack it for now */ 164 struct { 165 struct iwl_mvm_wep_key_cmd wep_key_cmd; 166 struct iwl_mvm_wep_key wep_key; 167 } __packed wkc = { 168 .wep_key_cmd.mac_id_n_color = 169 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 170 mvmvif->color)), 171 .wep_key_cmd.num_keys = 1, 172 /* firmware sets STA_KEY_FLG_WEP_13BYTES */ 173 .wep_key_cmd.decryption_type = STA_KEY_FLG_WEP, 174 .wep_key.key_index = key->keyidx, 175 .wep_key.key_size = key->keylen, 176 }; 177 178 /* 179 * This will fail -- the key functions don't set support 180 * pairwise WEP keys. However, that's better than silently 181 * failing WoWLAN. Or maybe not? 182 */ 183 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) 184 break; 185 186 memcpy(&wkc.wep_key.key[3], key->key, key->keylen); 187 if (key->keyidx == mvmvif->tx_key_idx) { 188 /* TX key must be at offset 0 */ 189 wkc.wep_key.key_offset = 0; 190 } else { 191 /* others start at 1 */ 192 data->wep_key_idx++; 193 wkc.wep_key.key_offset = data->wep_key_idx; 194 } 195 196 ret = iwl_mvm_send_cmd_pdu(mvm, WEP_KEY, CMD_SYNC, 197 sizeof(wkc), &wkc); 198 data->error = ret != 0; 199 200 mvm->ptk_ivlen = key->iv_len; 201 mvm->ptk_icvlen = key->icv_len; 202 mvm->gtk_ivlen = key->iv_len; 203 mvm->gtk_icvlen = key->icv_len; 204 205 /* don't upload key again */ 206 goto out_unlock; 207 } 208 default: 209 data->error = true; 210 goto out_unlock; 211 case WLAN_CIPHER_SUITE_AES_CMAC: 212 /* 213 * Ignore CMAC keys -- the WoWLAN firmware doesn't support them 214 * but we also shouldn't abort suspend due to that. It does have 215 * support for the IGTK key renewal, but doesn't really use the 216 * IGTK for anything. This means we could spuriously wake up or 217 * be deauthenticated, but that was considered acceptable. 218 */ 219 goto out_unlock; 220 case WLAN_CIPHER_SUITE_TKIP: 221 if (sta) { 222 tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc; 223 tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc; 224 225 rx_p1ks = data->tkip->rx_uni; 226 227 ieee80211_get_key_tx_seq(key, &seq); 228 tkip_tx_sc->iv16 = cpu_to_le16(seq.tkip.iv16); 229 tkip_tx_sc->iv32 = cpu_to_le32(seq.tkip.iv32); 230 231 ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k); 232 iwl_mvm_convert_p1k(p1k, data->tkip->tx.p1k); 233 234 memcpy(data->tkip->mic_keys.tx, 235 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], 236 IWL_MIC_KEY_SIZE); 237 238 rx_mic_key = data->tkip->mic_keys.rx_unicast; 239 } else { 240 tkip_sc = 241 data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc; 242 rx_p1ks = data->tkip->rx_multi; 243 rx_mic_key = data->tkip->mic_keys.rx_mcast; 244 } 245 246 /* 247 * For non-QoS this relies on the fact that both the uCode and 248 * mac80211 use TID 0 (as they need to to avoid replay attacks) 249 * for checking the IV in the frames. 250 */ 251 for (i = 0; i < IWL_NUM_RSC; i++) { 252 ieee80211_get_key_rx_seq(key, i, &seq); 253 tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16); 254 tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32); 255 /* wrapping isn't allowed, AP must rekey */ 256 if (seq.tkip.iv32 > cur_rx_iv32) 257 cur_rx_iv32 = seq.tkip.iv32; 258 } 259 260 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid, 261 cur_rx_iv32, p1k); 262 iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k); 263 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid, 264 cur_rx_iv32 + 1, p1k); 265 iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k); 266 267 memcpy(rx_mic_key, 268 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], 269 IWL_MIC_KEY_SIZE); 270 271 data->use_tkip = true; 272 data->use_rsc_tsc = true; 273 break; 274 case WLAN_CIPHER_SUITE_CCMP: 275 if (sta) { 276 u8 *pn = seq.ccmp.pn; 277 278 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc; 279 aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc; 280 281 ieee80211_get_key_tx_seq(key, &seq); 282 aes_tx_sc->pn = cpu_to_le64((u64)pn[5] | 283 ((u64)pn[4] << 8) | 284 ((u64)pn[3] << 16) | 285 ((u64)pn[2] << 24) | 286 ((u64)pn[1] << 32) | 287 ((u64)pn[0] << 40)); 288 } else { 289 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc; 290 } 291 292 /* 293 * For non-QoS this relies on the fact that both the uCode and 294 * mac80211 use TID 0 for checking the IV in the frames. 295 */ 296 for (i = 0; i < IWL_NUM_RSC; i++) { 297 u8 *pn = seq.ccmp.pn; 298 299 ieee80211_get_key_rx_seq(key, i, &seq); 300 aes_sc->pn = cpu_to_le64((u64)pn[5] | 301 ((u64)pn[4] << 8) | 302 ((u64)pn[3] << 16) | 303 ((u64)pn[2] << 24) | 304 ((u64)pn[1] << 32) | 305 ((u64)pn[0] << 40)); 306 } 307 data->use_rsc_tsc = true; 308 break; 309 } 310 311 /* 312 * The D3 firmware hardcodes the key offset 0 as the key it uses 313 * to transmit packets to the AP, i.e. the PTK. 314 */ 315 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) { 316 key->hw_key_idx = 0; 317 mvm->ptk_ivlen = key->iv_len; 318 mvm->ptk_icvlen = key->icv_len; 319 } else { 320 /* 321 * firmware only supports TSC/RSC for a single key, 322 * so if there are multiple keep overwriting them 323 * with new ones -- this relies on mac80211 doing 324 * list_add_tail(). 325 */ 326 key->hw_key_idx = 1; 327 mvm->gtk_ivlen = key->iv_len; 328 mvm->gtk_icvlen = key->icv_len; 329 } 330 331 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, true); 332 data->error = ret != 0; 333out_unlock: 334 mutex_unlock(&mvm->mutex); 335} 336 337static int iwl_mvm_send_patterns(struct iwl_mvm *mvm, 338 struct cfg80211_wowlan *wowlan) 339{ 340 struct iwl_wowlan_patterns_cmd *pattern_cmd; 341 struct iwl_host_cmd cmd = { 342 .id = WOWLAN_PATTERNS, 343 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 344 .flags = CMD_SYNC, 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 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 394static void iwl_mvm_build_tcp_packet(struct ieee80211_vif *vif, 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, }, 521 .flags = CMD_SYNC, 522 }; 523 int ret; 524 525 if (!tcp) 526 return 0; 527 528 cfg = kzalloc(sizeof(*cfg), GFP_KERNEL); 529 if (!cfg) 530 return -ENOMEM; 531 cmd.data[0] = cfg; 532 533 cfg->max_syn_retries = 10; 534 cfg->max_data_retries = 10; 535 cfg->tcp_syn_ack_timeout = 1; /* seconds */ 536 cfg->tcp_ack_timeout = 1; /* seconds */ 537 538 /* SYN (TX) */ 539 iwl_mvm_build_tcp_packet( 540 vif, tcp, cfg->syn_tx.data, NULL, 541 &cfg->syn_tx.info.tcp_pseudo_header_checksum, 542 MVM_TCP_TX_SYN); 543 cfg->syn_tx.info.tcp_payload_length = 0; 544 545 /* SYN/ACK (RX) */ 546 iwl_mvm_build_tcp_packet( 547 vif, tcp, cfg->synack_rx.data, cfg->synack_rx.rx_mask, 548 &cfg->synack_rx.info.tcp_pseudo_header_checksum, 549 MVM_TCP_RX_SYNACK); 550 cfg->synack_rx.info.tcp_payload_length = 0; 551 552 /* KEEPALIVE/ACK (TX) */ 553 iwl_mvm_build_tcp_packet( 554 vif, tcp, cfg->keepalive_tx.data, NULL, 555 &cfg->keepalive_tx.info.tcp_pseudo_header_checksum, 556 MVM_TCP_TX_DATA); 557 cfg->keepalive_tx.info.tcp_payload_length = 558 cpu_to_le16(tcp->payload_len); 559 cfg->sequence_number_offset = tcp->payload_seq.offset; 560 /* length must be 0..4, the field is little endian */ 561 cfg->sequence_number_length = tcp->payload_seq.len; 562 cfg->initial_sequence_number = cpu_to_le32(tcp->payload_seq.start); 563 cfg->keepalive_interval = cpu_to_le16(tcp->data_interval); 564 if (tcp->payload_tok.len) { 565 cfg->token_offset = tcp->payload_tok.offset; 566 cfg->token_length = tcp->payload_tok.len; 567 cfg->num_tokens = 568 cpu_to_le16(tcp->tokens_size % tcp->payload_tok.len); 569 memcpy(cfg->tokens, tcp->payload_tok.token_stream, 570 tcp->tokens_size); 571 } else { 572 /* set tokens to max value to almost never run out */ 573 cfg->num_tokens = cpu_to_le16(65535); 574 } 575 576 /* ACK (RX) */ 577 iwl_mvm_build_tcp_packet( 578 vif, tcp, cfg->keepalive_ack_rx.data, 579 cfg->keepalive_ack_rx.rx_mask, 580 &cfg->keepalive_ack_rx.info.tcp_pseudo_header_checksum, 581 MVM_TCP_RX_ACK); 582 cfg->keepalive_ack_rx.info.tcp_payload_length = 0; 583 584 /* WAKEUP (RX) */ 585 iwl_mvm_build_tcp_packet( 586 vif, tcp, cfg->wake_rx.data, cfg->wake_rx.rx_mask, 587 &cfg->wake_rx.info.tcp_pseudo_header_checksum, 588 MVM_TCP_RX_WAKE); 589 cfg->wake_rx.info.tcp_payload_length = 590 cpu_to_le16(tcp->wake_len); 591 592 /* FIN */ 593 iwl_mvm_build_tcp_packet( 594 vif, tcp, cfg->fin_tx.data, NULL, 595 &cfg->fin_tx.info.tcp_pseudo_header_checksum, 596 MVM_TCP_TX_FIN); 597 cfg->fin_tx.info.tcp_payload_length = 0; 598 599 ret = iwl_mvm_send_cmd(mvm, &cmd); 600 kfree(cfg); 601 602 return ret; 603} 604 605struct iwl_d3_iter_data { 606 struct iwl_mvm *mvm; 607 struct ieee80211_vif *vif; 608 bool error; 609}; 610 611static void iwl_mvm_d3_iface_iterator(void *_data, u8 *mac, 612 struct ieee80211_vif *vif) 613{ 614 struct iwl_d3_iter_data *data = _data; 615 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 616 617 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p) 618 return; 619 620 if (mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT) 621 return; 622 623 if (data->vif) { 624 IWL_ERR(data->mvm, "More than one managed interface active!\n"); 625 data->error = true; 626 return; 627 } 628 629 data->vif = vif; 630} 631 632static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 633 struct ieee80211_sta *ap_sta) 634{ 635 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 636 struct ieee80211_chanctx_conf *ctx; 637 u8 chains_static, chains_dynamic; 638 struct cfg80211_chan_def chandef; 639 int ret, i; 640 struct iwl_binding_cmd binding_cmd = {}; 641 struct iwl_time_quota_cmd quota_cmd = {}; 642 u32 status; 643 644 /* add back the PHY */ 645 if (WARN_ON(!mvmvif->phy_ctxt)) 646 return -EINVAL; 647 648 rcu_read_lock(); 649 ctx = rcu_dereference(vif->chanctx_conf); 650 if (WARN_ON(!ctx)) { 651 rcu_read_unlock(); 652 return -EINVAL; 653 } 654 chandef = ctx->def; 655 chains_static = ctx->rx_chains_static; 656 chains_dynamic = ctx->rx_chains_dynamic; 657 rcu_read_unlock(); 658 659 ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt, &chandef, 660 chains_static, chains_dynamic); 661 if (ret) 662 return ret; 663 664 /* add back the MAC */ 665 mvmvif->uploaded = false; 666 667 if (WARN_ON(!vif->bss_conf.assoc)) 668 return -EINVAL; 669 /* hack */ 670 vif->bss_conf.assoc = false; 671 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 672 vif->bss_conf.assoc = true; 673 if (ret) 674 return ret; 675 676 /* add back binding - XXX refactor? */ 677 binding_cmd.id_and_color = 678 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id, 679 mvmvif->phy_ctxt->color)); 680 binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD); 681 binding_cmd.phy = 682 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id, 683 mvmvif->phy_ctxt->color)); 684 binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 685 mvmvif->color)); 686 for (i = 1; i < MAX_MACS_IN_BINDING; i++) 687 binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID); 688 689 status = 0; 690 ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD, 691 sizeof(binding_cmd), &binding_cmd, 692 &status); 693 if (ret) { 694 IWL_ERR(mvm, "Failed to add binding: %d\n", ret); 695 return ret; 696 } 697 698 if (status) { 699 IWL_ERR(mvm, "Binding command failed: %u\n", status); 700 return -EIO; 701 } 702 703 ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false); 704 if (ret) 705 return ret; 706 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], ap_sta); 707 708 ret = iwl_mvm_mac_ctxt_changed(mvm, vif); 709 if (ret) 710 return ret; 711 712 /* and some quota */ 713 quota_cmd.quotas[0].id_and_color = 714 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id, 715 mvmvif->phy_ctxt->color)); 716 quota_cmd.quotas[0].quota = cpu_to_le32(IWL_MVM_MAX_QUOTA); 717 quota_cmd.quotas[0].max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA); 718 719 for (i = 1; i < MAX_BINDINGS; i++) 720 quota_cmd.quotas[i].id_and_color = cpu_to_le32(FW_CTXT_INVALID); 721 722 ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, CMD_SYNC, 723 sizeof(quota_cmd), "a_cmd); 724 if (ret) 725 IWL_ERR(mvm, "Failed to send quota: %d\n", ret); 726 727 return 0; 728} 729 730static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm, 731 struct ieee80211_vif *vif) 732{ 733 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 734 struct iwl_nonqos_seq_query_cmd query_cmd = { 735 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET), 736 .mac_id_n_color = 737 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 738 mvmvif->color)), 739 }; 740 struct iwl_host_cmd cmd = { 741 .id = NON_QOS_TX_COUNTER_CMD, 742 .flags = CMD_SYNC | CMD_WANT_SKB, 743 }; 744 int err; 745 u32 size; 746 747 cmd.data[0] = &query_cmd; 748 cmd.len[0] = sizeof(query_cmd); 749 750 err = iwl_mvm_send_cmd(mvm, &cmd); 751 if (err) 752 return err; 753 754 size = iwl_rx_packet_payload_len(cmd.resp_pkt); 755 if (size < sizeof(__le16)) { 756 err = -EINVAL; 757 } else { 758 err = le16_to_cpup((__le16 *)cmd.resp_pkt->data); 759 /* firmware returns next, not last-used seqno */ 760 err = (u16) (err - 0x10); 761 } 762 763 iwl_free_resp(&cmd); 764 return err; 765} 766 767void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 768{ 769 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 770 struct iwl_nonqos_seq_query_cmd query_cmd = { 771 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET), 772 .mac_id_n_color = 773 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 774 mvmvif->color)), 775 .value = cpu_to_le16(mvmvif->seqno), 776 }; 777 778 /* return if called during restart, not resume from D3 */ 779 if (!mvmvif->seqno_valid) 780 return; 781 782 mvmvif->seqno_valid = false; 783 784 if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, CMD_SYNC, 785 sizeof(query_cmd), &query_cmd)) 786 IWL_ERR(mvm, "failed to set non-QoS seqno\n"); 787} 788 789static int 790iwl_mvm_send_wowlan_config_cmd(struct iwl_mvm *mvm, 791 const struct iwl_wowlan_config_cmd_v3 *cmd) 792{ 793 /* start only with the v2 part of the command */ 794 u16 cmd_len = sizeof(cmd->common); 795 796 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_WOWLAN_CONFIG_TID) 797 cmd_len = sizeof(*cmd); 798 799 return iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, CMD_SYNC, 800 cmd_len, cmd); 801} 802 803static int __iwl_mvm_suspend(struct ieee80211_hw *hw, 804 struct cfg80211_wowlan *wowlan, 805 bool test) 806{ 807 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 808 struct iwl_d3_iter_data suspend_iter_data = { 809 .mvm = mvm, 810 }; 811 struct ieee80211_vif *vif; 812 struct iwl_mvm_vif *mvmvif; 813 struct ieee80211_sta *ap_sta; 814 struct iwl_mvm_sta *mvm_ap_sta; 815 struct iwl_wowlan_config_cmd_v3 wowlan_config_cmd = {}; 816 struct iwl_wowlan_kek_kck_material_cmd kek_kck_cmd = {}; 817 struct iwl_wowlan_tkip_params_cmd tkip_cmd = {}; 818 struct iwl_d3_manager_config d3_cfg_cmd_data = { 819 /* 820 * Program the minimum sleep time to 10 seconds, as many 821 * platforms have issues processing a wakeup signal while 822 * still being in the process of suspending. 823 */ 824 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000), 825 }; 826 struct iwl_host_cmd d3_cfg_cmd = { 827 .id = D3_CONFIG_CMD, 828 .flags = CMD_SYNC | CMD_WANT_SKB, 829 .data[0] = &d3_cfg_cmd_data, 830 .len[0] = sizeof(d3_cfg_cmd_data), 831 }; 832 struct wowlan_key_data key_data = { 833 .use_rsc_tsc = false, 834 .tkip = &tkip_cmd, 835 .use_tkip = false, 836 }; 837 int ret; 838 int len __maybe_unused; 839 840 if (!wowlan) { 841 /* 842 * mac80211 shouldn't get here, but for D3 test 843 * it doesn't warrant a warning 844 */ 845 WARN_ON(!test); 846 return -EINVAL; 847 } 848 849 key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL); 850 if (!key_data.rsc_tsc) 851 return -ENOMEM; 852 853 mutex_lock(&mvm->mutex); 854 855 /* see if there's only a single BSS vif and it's associated */ 856 ieee80211_iterate_active_interfaces_atomic( 857 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 858 iwl_mvm_d3_iface_iterator, &suspend_iter_data); 859 860 if (suspend_iter_data.error || !suspend_iter_data.vif) { 861 ret = 1; 862 goto out_noreset; 863 } 864 865 vif = suspend_iter_data.vif; 866 mvmvif = iwl_mvm_vif_from_mac80211(vif); 867 868 ap_sta = rcu_dereference_protected( 869 mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], 870 lockdep_is_held(&mvm->mutex)); 871 if (IS_ERR_OR_NULL(ap_sta)) { 872 ret = -EINVAL; 873 goto out_noreset; 874 } 875 876 mvm_ap_sta = (struct iwl_mvm_sta *)ap_sta->drv_priv; 877 878 /* TODO: wowlan_config_cmd.common.wowlan_ba_teardown_tids */ 879 880 wowlan_config_cmd.common.is_11n_connection = 881 ap_sta->ht_cap.ht_supported; 882 883 /* Query the last used seqno and set it */ 884 ret = iwl_mvm_get_last_nonqos_seq(mvm, vif); 885 if (ret < 0) 886 goto out_noreset; 887 wowlan_config_cmd.common.non_qos_seq = cpu_to_le16(ret); 888 889 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, &wowlan_config_cmd.common); 890 891 if (wowlan->disconnect) 892 wowlan_config_cmd.common.wakeup_filter |= 893 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS | 894 IWL_WOWLAN_WAKEUP_LINK_CHANGE); 895 if (wowlan->magic_pkt) 896 wowlan_config_cmd.common.wakeup_filter |= 897 cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET); 898 if (wowlan->gtk_rekey_failure) 899 wowlan_config_cmd.common.wakeup_filter |= 900 cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL); 901 if (wowlan->eap_identity_req) 902 wowlan_config_cmd.common.wakeup_filter |= 903 cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ); 904 if (wowlan->four_way_handshake) 905 wowlan_config_cmd.common.wakeup_filter |= 906 cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE); 907 if (wowlan->n_patterns) 908 wowlan_config_cmd.common.wakeup_filter |= 909 cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH); 910 911 if (wowlan->rfkill_release) 912 wowlan_config_cmd.common.wakeup_filter |= 913 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT); 914 915 if (wowlan->tcp) { 916 /* 917 * Set the "link change" (really "link lost") flag as well 918 * since that implies losing the TCP connection. 919 */ 920 wowlan_config_cmd.common.wakeup_filter |= 921 cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS | 922 IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE | 923 IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET | 924 IWL_WOWLAN_WAKEUP_LINK_CHANGE); 925 } 926 927 iwl_mvm_cancel_scan(mvm); 928 929 iwl_trans_stop_device(mvm->trans); 930 931 /* 932 * Set the HW restart bit -- this is mostly true as we're 933 * going to load new firmware and reprogram that, though 934 * the reprogramming is going to be manual to avoid adding 935 * all the MACs that aren't support. 936 * We don't have to clear up everything though because the 937 * reprogramming is manual. When we resume, we'll actually 938 * go through a proper restart sequence again to switch 939 * back to the runtime firmware image. 940 */ 941 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 942 943 /* We reprogram keys and shouldn't allocate new key indices */ 944 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); 945 946 mvm->ptk_ivlen = 0; 947 mvm->ptk_icvlen = 0; 948 mvm->ptk_ivlen = 0; 949 mvm->ptk_icvlen = 0; 950 951 ret = iwl_mvm_load_d3_fw(mvm); 952 if (ret) 953 goto out; 954 955 ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta); 956 if (ret) 957 goto out; 958 959 if (!iwlwifi_mod_params.sw_crypto) { 960 /* 961 * This needs to be unlocked due to lock ordering 962 * constraints. Since we're in the suspend path 963 * that isn't really a problem though. 964 */ 965 mutex_unlock(&mvm->mutex); 966 ieee80211_iter_keys(mvm->hw, vif, 967 iwl_mvm_wowlan_program_keys, 968 &key_data); 969 mutex_lock(&mvm->mutex); 970 if (key_data.error) { 971 ret = -EIO; 972 goto out; 973 } 974 975 if (key_data.use_rsc_tsc) { 976 struct iwl_host_cmd rsc_tsc_cmd = { 977 .id = WOWLAN_TSC_RSC_PARAM, 978 .flags = CMD_SYNC, 979 .data[0] = key_data.rsc_tsc, 980 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 981 .len[0] = sizeof(*key_data.rsc_tsc), 982 }; 983 984 ret = iwl_mvm_send_cmd(mvm, &rsc_tsc_cmd); 985 if (ret) 986 goto out; 987 } 988 989 if (key_data.use_tkip) { 990 ret = iwl_mvm_send_cmd_pdu(mvm, 991 WOWLAN_TKIP_PARAM, 992 CMD_SYNC, sizeof(tkip_cmd), 993 &tkip_cmd); 994 if (ret) 995 goto out; 996 } 997 998 if (mvmvif->rekey_data.valid) { 999 memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd)); 1000 memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck, 1001 NL80211_KCK_LEN); 1002 kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN); 1003 memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek, 1004 NL80211_KEK_LEN); 1005 kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN); 1006 kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr; 1007 1008 ret = iwl_mvm_send_cmd_pdu(mvm, 1009 WOWLAN_KEK_KCK_MATERIAL, 1010 CMD_SYNC, 1011 sizeof(kek_kck_cmd), 1012 &kek_kck_cmd); 1013 if (ret) 1014 goto out; 1015 } 1016 } 1017 1018 ret = iwl_mvm_send_wowlan_config_cmd(mvm, &wowlan_config_cmd); 1019 if (ret) 1020 goto out; 1021 1022 ret = iwl_mvm_send_patterns(mvm, wowlan); 1023 if (ret) 1024 goto out; 1025 1026 ret = iwl_mvm_send_proto_offload(mvm, vif, false, CMD_SYNC); 1027 if (ret) 1028 goto out; 1029 1030 ret = iwl_mvm_send_remote_wake_cfg(mvm, vif, wowlan->tcp); 1031 if (ret) 1032 goto out; 1033 1034 ret = iwl_mvm_power_update_device(mvm); 1035 if (ret) 1036 goto out; 1037 1038 ret = iwl_mvm_power_update_mac(mvm, vif); 1039 if (ret) 1040 goto out; 1041 1042#ifdef CONFIG_IWLWIFI_DEBUGFS 1043 if (mvm->d3_wake_sysassert) 1044 d3_cfg_cmd_data.wakeup_flags |= 1045 cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR); 1046#endif 1047 1048 /* must be last -- this switches firmware state */ 1049 ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd); 1050 if (ret) 1051 goto out; 1052#ifdef CONFIG_IWLWIFI_DEBUGFS 1053 len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt); 1054 if (len >= sizeof(u32)) { 1055 mvm->d3_test_pme_ptr = 1056 le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data); 1057 } 1058#endif 1059 iwl_free_resp(&d3_cfg_cmd); 1060 1061 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1062 1063 iwl_trans_d3_suspend(mvm->trans, test); 1064 out: 1065 if (ret < 0) 1066 ieee80211_restart_hw(mvm->hw); 1067 out_noreset: 1068 kfree(key_data.rsc_tsc); 1069 1070 mutex_unlock(&mvm->mutex); 1071 1072 return ret; 1073} 1074 1075int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) 1076{ 1077 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1078 1079 if (iwl_mvm_is_d0i3_supported(mvm)) { 1080 mutex_lock(&mvm->d0i3_suspend_mutex); 1081 __set_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags); 1082 mutex_unlock(&mvm->d0i3_suspend_mutex); 1083 return 0; 1084 } 1085 1086 return __iwl_mvm_suspend(hw, wowlan, false); 1087} 1088 1089/* converted data from the different status responses */ 1090struct iwl_wowlan_status_data { 1091 u16 pattern_number; 1092 u16 qos_seq_ctr[8]; 1093 u32 wakeup_reasons; 1094 u32 wake_packet_length; 1095 u32 wake_packet_bufsize; 1096 const u8 *wake_packet; 1097}; 1098 1099static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm, 1100 struct ieee80211_vif *vif, 1101 struct iwl_wowlan_status_data *status) 1102{ 1103 struct sk_buff *pkt = NULL; 1104 struct cfg80211_wowlan_wakeup wakeup = { 1105 .pattern_idx = -1, 1106 }; 1107 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; 1108 u32 reasons = status->wakeup_reasons; 1109 1110 if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) { 1111 wakeup_report = NULL; 1112 goto report; 1113 } 1114 1115 if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET) 1116 wakeup.magic_pkt = true; 1117 1118 if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN) 1119 wakeup.pattern_idx = 1120 status->pattern_number; 1121 1122 if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 1123 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)) 1124 wakeup.disconnect = true; 1125 1126 if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE) 1127 wakeup.gtk_rekey_failure = true; 1128 1129 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 1130 wakeup.rfkill_release = true; 1131 1132 if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST) 1133 wakeup.eap_identity_req = true; 1134 1135 if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE) 1136 wakeup.four_way_handshake = true; 1137 1138 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS) 1139 wakeup.tcp_connlost = true; 1140 1141 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE) 1142 wakeup.tcp_nomoretokens = true; 1143 1144 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET) 1145 wakeup.tcp_match = true; 1146 1147 if (status->wake_packet_bufsize) { 1148 int pktsize = status->wake_packet_bufsize; 1149 int pktlen = status->wake_packet_length; 1150 const u8 *pktdata = status->wake_packet; 1151 struct ieee80211_hdr *hdr = (void *)pktdata; 1152 int truncated = pktlen - pktsize; 1153 1154 /* this would be a firmware bug */ 1155 if (WARN_ON_ONCE(truncated < 0)) 1156 truncated = 0; 1157 1158 if (ieee80211_is_data(hdr->frame_control)) { 1159 int hdrlen = ieee80211_hdrlen(hdr->frame_control); 1160 int ivlen = 0, icvlen = 4; /* also FCS */ 1161 1162 pkt = alloc_skb(pktsize, GFP_KERNEL); 1163 if (!pkt) 1164 goto report; 1165 1166 memcpy(skb_put(pkt, hdrlen), pktdata, hdrlen); 1167 pktdata += hdrlen; 1168 pktsize -= hdrlen; 1169 1170 if (ieee80211_has_protected(hdr->frame_control)) { 1171 /* 1172 * This is unlocked and using gtk_i(c)vlen, 1173 * but since everything is under RTNL still 1174 * that's not really a problem - changing 1175 * it would be difficult. 1176 */ 1177 if (is_multicast_ether_addr(hdr->addr1)) { 1178 ivlen = mvm->gtk_ivlen; 1179 icvlen += mvm->gtk_icvlen; 1180 } else { 1181 ivlen = mvm->ptk_ivlen; 1182 icvlen += mvm->ptk_icvlen; 1183 } 1184 } 1185 1186 /* if truncated, FCS/ICV is (partially) gone */ 1187 if (truncated >= icvlen) { 1188 icvlen = 0; 1189 truncated -= icvlen; 1190 } else { 1191 icvlen -= truncated; 1192 truncated = 0; 1193 } 1194 1195 pktsize -= ivlen + icvlen; 1196 pktdata += ivlen; 1197 1198 memcpy(skb_put(pkt, pktsize), pktdata, pktsize); 1199 1200 if (ieee80211_data_to_8023(pkt, vif->addr, vif->type)) 1201 goto report; 1202 wakeup.packet = pkt->data; 1203 wakeup.packet_present_len = pkt->len; 1204 wakeup.packet_len = pkt->len - truncated; 1205 wakeup.packet_80211 = false; 1206 } else { 1207 int fcslen = 4; 1208 1209 if (truncated >= 4) { 1210 truncated -= 4; 1211 fcslen = 0; 1212 } else { 1213 fcslen -= truncated; 1214 truncated = 0; 1215 } 1216 pktsize -= fcslen; 1217 wakeup.packet = status->wake_packet; 1218 wakeup.packet_present_len = pktsize; 1219 wakeup.packet_len = pktlen - truncated; 1220 wakeup.packet_80211 = true; 1221 } 1222 } 1223 1224 report: 1225 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); 1226 kfree_skb(pkt); 1227} 1228 1229static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc, 1230 struct ieee80211_key_seq *seq) 1231{ 1232 u64 pn; 1233 1234 pn = le64_to_cpu(sc->pn); 1235 seq->ccmp.pn[0] = pn >> 40; 1236 seq->ccmp.pn[1] = pn >> 32; 1237 seq->ccmp.pn[2] = pn >> 24; 1238 seq->ccmp.pn[3] = pn >> 16; 1239 seq->ccmp.pn[4] = pn >> 8; 1240 seq->ccmp.pn[5] = pn; 1241} 1242 1243static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc, 1244 struct ieee80211_key_seq *seq) 1245{ 1246 seq->tkip.iv32 = le32_to_cpu(sc->iv32); 1247 seq->tkip.iv16 = le16_to_cpu(sc->iv16); 1248} 1249 1250static void iwl_mvm_set_aes_rx_seq(struct aes_sc *scs, 1251 struct ieee80211_key_conf *key) 1252{ 1253 int tid; 1254 1255 BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS); 1256 1257 for (tid = 0; tid < IWL_NUM_RSC; tid++) { 1258 struct ieee80211_key_seq seq = {}; 1259 1260 iwl_mvm_aes_sc_to_seq(&scs[tid], &seq); 1261 ieee80211_set_key_rx_seq(key, tid, &seq); 1262 } 1263} 1264 1265static void iwl_mvm_set_tkip_rx_seq(struct tkip_sc *scs, 1266 struct ieee80211_key_conf *key) 1267{ 1268 int tid; 1269 1270 BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS); 1271 1272 for (tid = 0; tid < IWL_NUM_RSC; tid++) { 1273 struct ieee80211_key_seq seq = {}; 1274 1275 iwl_mvm_tkip_sc_to_seq(&scs[tid], &seq); 1276 ieee80211_set_key_rx_seq(key, tid, &seq); 1277 } 1278} 1279 1280static void iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf *key, 1281 struct iwl_wowlan_status *status) 1282{ 1283 union iwl_all_tsc_rsc *rsc = &status->gtk.rsc.all_tsc_rsc; 1284 1285 switch (key->cipher) { 1286 case WLAN_CIPHER_SUITE_CCMP: 1287 iwl_mvm_set_aes_rx_seq(rsc->aes.multicast_rsc, key); 1288 break; 1289 case WLAN_CIPHER_SUITE_TKIP: 1290 iwl_mvm_set_tkip_rx_seq(rsc->tkip.multicast_rsc, key); 1291 break; 1292 default: 1293 WARN_ON(1); 1294 } 1295} 1296 1297struct iwl_mvm_d3_gtk_iter_data { 1298 struct iwl_wowlan_status *status; 1299 void *last_gtk; 1300 u32 cipher; 1301 bool find_phase, unhandled_cipher; 1302 int num_keys; 1303}; 1304 1305static void iwl_mvm_d3_update_gtks(struct ieee80211_hw *hw, 1306 struct ieee80211_vif *vif, 1307 struct ieee80211_sta *sta, 1308 struct ieee80211_key_conf *key, 1309 void *_data) 1310{ 1311 struct iwl_mvm_d3_gtk_iter_data *data = _data; 1312 1313 if (data->unhandled_cipher) 1314 return; 1315 1316 switch (key->cipher) { 1317 case WLAN_CIPHER_SUITE_WEP40: 1318 case WLAN_CIPHER_SUITE_WEP104: 1319 /* ignore WEP completely, nothing to do */ 1320 return; 1321 case WLAN_CIPHER_SUITE_CCMP: 1322 case WLAN_CIPHER_SUITE_TKIP: 1323 /* we support these */ 1324 break; 1325 default: 1326 /* everything else (even CMAC for MFP) - disconnect from AP */ 1327 data->unhandled_cipher = true; 1328 return; 1329 } 1330 1331 data->num_keys++; 1332 1333 /* 1334 * pairwise key - update sequence counters only; 1335 * note that this assumes no TDLS sessions are active 1336 */ 1337 if (sta) { 1338 struct ieee80211_key_seq seq = {}; 1339 union iwl_all_tsc_rsc *sc = &data->status->gtk.rsc.all_tsc_rsc; 1340 1341 if (data->find_phase) 1342 return; 1343 1344 switch (key->cipher) { 1345 case WLAN_CIPHER_SUITE_CCMP: 1346 iwl_mvm_aes_sc_to_seq(&sc->aes.tsc, &seq); 1347 iwl_mvm_set_aes_rx_seq(sc->aes.unicast_rsc, key); 1348 break; 1349 case WLAN_CIPHER_SUITE_TKIP: 1350 iwl_mvm_tkip_sc_to_seq(&sc->tkip.tsc, &seq); 1351 iwl_mvm_set_tkip_rx_seq(sc->tkip.unicast_rsc, key); 1352 break; 1353 } 1354 ieee80211_set_key_tx_seq(key, &seq); 1355 1356 /* that's it for this key */ 1357 return; 1358 } 1359 1360 if (data->find_phase) { 1361 data->last_gtk = key; 1362 data->cipher = key->cipher; 1363 return; 1364 } 1365 1366 if (data->status->num_of_gtk_rekeys) 1367 ieee80211_remove_key(key); 1368 else if (data->last_gtk == key) 1369 iwl_mvm_set_key_rx_seq(key, data->status); 1370} 1371 1372static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm, 1373 struct ieee80211_vif *vif, 1374 struct iwl_wowlan_status *status) 1375{ 1376 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1377 struct iwl_mvm_d3_gtk_iter_data gtkdata = { 1378 .status = status, 1379 }; 1380 u32 disconnection_reasons = 1381 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 1382 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH; 1383 1384 if (!status || !vif->bss_conf.bssid) 1385 return false; 1386 1387 if (le32_to_cpu(status->wakeup_reasons) & disconnection_reasons) 1388 return false; 1389 1390 /* find last GTK that we used initially, if any */ 1391 gtkdata.find_phase = true; 1392 ieee80211_iter_keys(mvm->hw, vif, 1393 iwl_mvm_d3_update_gtks, >kdata); 1394 /* not trying to keep connections with MFP/unhandled ciphers */ 1395 if (gtkdata.unhandled_cipher) 1396 return false; 1397 if (!gtkdata.num_keys) 1398 goto out; 1399 if (!gtkdata.last_gtk) 1400 return false; 1401 1402 /* 1403 * invalidate all other GTKs that might still exist and update 1404 * the one that we used 1405 */ 1406 gtkdata.find_phase = false; 1407 ieee80211_iter_keys(mvm->hw, vif, 1408 iwl_mvm_d3_update_gtks, >kdata); 1409 1410 if (status->num_of_gtk_rekeys) { 1411 struct ieee80211_key_conf *key; 1412 struct { 1413 struct ieee80211_key_conf conf; 1414 u8 key[32]; 1415 } conf = { 1416 .conf.cipher = gtkdata.cipher, 1417 .conf.keyidx = status->gtk.key_index, 1418 }; 1419 1420 switch (gtkdata.cipher) { 1421 case WLAN_CIPHER_SUITE_CCMP: 1422 conf.conf.keylen = WLAN_KEY_LEN_CCMP; 1423 memcpy(conf.conf.key, status->gtk.decrypt_key, 1424 WLAN_KEY_LEN_CCMP); 1425 break; 1426 case WLAN_CIPHER_SUITE_TKIP: 1427 conf.conf.keylen = WLAN_KEY_LEN_TKIP; 1428 memcpy(conf.conf.key, status->gtk.decrypt_key, 16); 1429 /* leave TX MIC key zeroed, we don't use it anyway */ 1430 memcpy(conf.conf.key + 1431 NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 1432 status->gtk.tkip_mic_key, 8); 1433 break; 1434 } 1435 1436 key = ieee80211_gtk_rekey_add(vif, &conf.conf); 1437 if (IS_ERR(key)) 1438 return false; 1439 iwl_mvm_set_key_rx_seq(key, status); 1440 } 1441 1442 if (status->num_of_gtk_rekeys) { 1443 __be64 replay_ctr = 1444 cpu_to_be64(le64_to_cpu(status->replay_ctr)); 1445 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid, 1446 (void *)&replay_ctr, GFP_KERNEL); 1447 } 1448 1449out: 1450 mvmvif->seqno_valid = true; 1451 /* +0x10 because the set API expects next-to-use, not last-used */ 1452 mvmvif->seqno = le16_to_cpu(status->non_qos_seq_ctr) + 0x10; 1453 1454 return true; 1455} 1456 1457/* releases the MVM mutex */ 1458static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm, 1459 struct ieee80211_vif *vif) 1460{ 1461 u32 base = mvm->error_event_table; 1462 struct error_table_start { 1463 /* cf. struct iwl_error_event_table */ 1464 u32 valid; 1465 u32 error_id; 1466 } err_info; 1467 struct iwl_host_cmd cmd = { 1468 .id = WOWLAN_GET_STATUSES, 1469 .flags = CMD_SYNC | CMD_WANT_SKB, 1470 }; 1471 struct iwl_wowlan_status_data status; 1472 struct iwl_wowlan_status *fw_status; 1473 int ret, len, status_size, i; 1474 bool keep; 1475 struct ieee80211_sta *ap_sta; 1476 struct iwl_mvm_sta *mvm_ap_sta; 1477 1478 iwl_trans_read_mem_bytes(mvm->trans, base, 1479 &err_info, sizeof(err_info)); 1480 1481 if (err_info.valid) { 1482 IWL_INFO(mvm, "error table is valid (%d)\n", 1483 err_info.valid); 1484 if (err_info.error_id == RF_KILL_INDICATOR_FOR_WOWLAN) { 1485 struct cfg80211_wowlan_wakeup wakeup = { 1486 .rfkill_release = true, 1487 }; 1488 ieee80211_report_wowlan_wakeup(vif, &wakeup, 1489 GFP_KERNEL); 1490 } 1491 goto out_unlock; 1492 } 1493 1494 /* only for tracing for now */ 1495 ret = iwl_mvm_send_cmd_pdu(mvm, OFFLOADS_QUERY_CMD, CMD_SYNC, 0, NULL); 1496 if (ret) 1497 IWL_ERR(mvm, "failed to query offload statistics (%d)\n", ret); 1498 1499 ret = iwl_mvm_send_cmd(mvm, &cmd); 1500 if (ret) { 1501 IWL_ERR(mvm, "failed to query status (%d)\n", ret); 1502 goto out_unlock; 1503 } 1504 1505 /* RF-kill already asserted again... */ 1506 if (!cmd.resp_pkt) 1507 goto out_unlock; 1508 1509 status_size = sizeof(*fw_status); 1510 1511 len = iwl_rx_packet_payload_len(cmd.resp_pkt); 1512 if (len < status_size) { 1513 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); 1514 goto out_free_resp; 1515 } 1516 1517 fw_status = (void *)cmd.resp_pkt->data; 1518 1519 status.pattern_number = le16_to_cpu(fw_status->pattern_number); 1520 for (i = 0; i < 8; i++) 1521 status.qos_seq_ctr[i] = 1522 le16_to_cpu(fw_status->qos_seq_ctr[i]); 1523 status.wakeup_reasons = le32_to_cpu(fw_status->wakeup_reasons); 1524 status.wake_packet_length = 1525 le32_to_cpu(fw_status->wake_packet_length); 1526 status.wake_packet_bufsize = 1527 le32_to_cpu(fw_status->wake_packet_bufsize); 1528 status.wake_packet = fw_status->wake_packet; 1529 1530 if (len != status_size + ALIGN(status.wake_packet_bufsize, 4)) { 1531 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); 1532 goto out_free_resp; 1533 } 1534 1535 /* still at hard-coded place 0 for D3 image */ 1536 ap_sta = rcu_dereference_protected( 1537 mvm->fw_id_to_mac_id[0], 1538 lockdep_is_held(&mvm->mutex)); 1539 if (IS_ERR_OR_NULL(ap_sta)) 1540 goto out_free_resp; 1541 1542 mvm_ap_sta = (struct iwl_mvm_sta *)ap_sta->drv_priv; 1543 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1544 u16 seq = status.qos_seq_ctr[i]; 1545 /* firmware stores last-used value, we store next value */ 1546 seq += 0x10; 1547 mvm_ap_sta->tid_data[i].seq_number = seq; 1548 } 1549 1550 /* now we have all the data we need, unlock to avoid mac80211 issues */ 1551 mutex_unlock(&mvm->mutex); 1552 1553 iwl_mvm_report_wakeup_reasons(mvm, vif, &status); 1554 1555 keep = iwl_mvm_setup_connection_keep(mvm, vif, fw_status); 1556 1557 iwl_free_resp(&cmd); 1558 return keep; 1559 1560 out_free_resp: 1561 iwl_free_resp(&cmd); 1562 out_unlock: 1563 mutex_unlock(&mvm->mutex); 1564 return false; 1565} 1566 1567static void iwl_mvm_read_d3_sram(struct iwl_mvm *mvm) 1568{ 1569#ifdef CONFIG_IWLWIFI_DEBUGFS 1570 const struct fw_img *img = &mvm->fw->img[IWL_UCODE_WOWLAN]; 1571 u32 len = img->sec[IWL_UCODE_SECTION_DATA].len; 1572 u32 offs = img->sec[IWL_UCODE_SECTION_DATA].offset; 1573 1574 if (!mvm->store_d3_resume_sram) 1575 return; 1576 1577 if (!mvm->d3_resume_sram) { 1578 mvm->d3_resume_sram = kzalloc(len, GFP_KERNEL); 1579 if (!mvm->d3_resume_sram) 1580 return; 1581 } 1582 1583 iwl_trans_read_mem_bytes(mvm->trans, offs, mvm->d3_resume_sram, len); 1584#endif 1585} 1586 1587static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac, 1588 struct ieee80211_vif *vif) 1589{ 1590 /* skip the one we keep connection on */ 1591 if (data == vif) 1592 return; 1593 1594 if (vif->type == NL80211_IFTYPE_STATION) 1595 ieee80211_resume_disconnect(vif); 1596} 1597 1598static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test) 1599{ 1600 struct iwl_d3_iter_data resume_iter_data = { 1601 .mvm = mvm, 1602 }; 1603 struct ieee80211_vif *vif = NULL; 1604 int ret; 1605 enum iwl_d3_status d3_status; 1606 bool keep = false; 1607 1608 mutex_lock(&mvm->mutex); 1609 1610 /* get the BSS vif pointer again */ 1611 ieee80211_iterate_active_interfaces_atomic( 1612 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1613 iwl_mvm_d3_iface_iterator, &resume_iter_data); 1614 1615 if (WARN_ON(resume_iter_data.error || !resume_iter_data.vif)) 1616 goto out_unlock; 1617 1618 vif = resume_iter_data.vif; 1619 1620 ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test); 1621 if (ret) 1622 goto out_unlock; 1623 1624 if (d3_status != IWL_D3_STATUS_ALIVE) { 1625 IWL_INFO(mvm, "Device was reset during suspend\n"); 1626 goto out_unlock; 1627 } 1628 1629 /* query SRAM first in case we want event logging */ 1630 iwl_mvm_read_d3_sram(mvm); 1631 1632 keep = iwl_mvm_query_wakeup_reasons(mvm, vif); 1633#ifdef CONFIG_IWLWIFI_DEBUGFS 1634 if (keep) 1635 mvm->keep_vif = vif; 1636#endif 1637 /* has unlocked the mutex, so skip that */ 1638 goto out; 1639 1640 out_unlock: 1641 mutex_unlock(&mvm->mutex); 1642 1643 out: 1644 if (!test) 1645 ieee80211_iterate_active_interfaces_rtnl(mvm->hw, 1646 IEEE80211_IFACE_ITER_NORMAL, 1647 iwl_mvm_d3_disconnect_iter, keep ? vif : NULL); 1648 1649 /* return 1 to reconfigure the device */ 1650 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1651 return 1; 1652} 1653 1654int iwl_mvm_resume(struct ieee80211_hw *hw) 1655{ 1656 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1657 1658 if (iwl_mvm_is_d0i3_supported(mvm)) { 1659 bool exit_now; 1660 1661 mutex_lock(&mvm->d0i3_suspend_mutex); 1662 __clear_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags); 1663 exit_now = __test_and_clear_bit(D0I3_PENDING_WAKEUP, 1664 &mvm->d0i3_suspend_flags); 1665 mutex_unlock(&mvm->d0i3_suspend_mutex); 1666 if (exit_now) 1667 _iwl_mvm_exit_d0i3(mvm); 1668 return 0; 1669 } 1670 1671 return __iwl_mvm_resume(mvm, false); 1672} 1673 1674void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled) 1675{ 1676 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1677 1678 device_set_wakeup_enable(mvm->trans->dev, enabled); 1679} 1680 1681#ifdef CONFIG_IWLWIFI_DEBUGFS 1682static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file) 1683{ 1684 struct iwl_mvm *mvm = inode->i_private; 1685 int err; 1686 1687 if (mvm->d3_test_active) 1688 return -EBUSY; 1689 1690 file->private_data = inode->i_private; 1691 1692 ieee80211_stop_queues(mvm->hw); 1693 synchronize_net(); 1694 1695 /* start pseudo D3 */ 1696 rtnl_lock(); 1697 err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true); 1698 rtnl_unlock(); 1699 if (err > 0) 1700 err = -EINVAL; 1701 if (err) { 1702 ieee80211_wake_queues(mvm->hw); 1703 return err; 1704 } 1705 mvm->d3_test_active = true; 1706 mvm->keep_vif = NULL; 1707 return 0; 1708} 1709 1710static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf, 1711 size_t count, loff_t *ppos) 1712{ 1713 struct iwl_mvm *mvm = file->private_data; 1714 u32 pme_asserted; 1715 1716 while (true) { 1717 /* read pme_ptr if available */ 1718 if (mvm->d3_test_pme_ptr) { 1719 pme_asserted = iwl_trans_read_mem32(mvm->trans, 1720 mvm->d3_test_pme_ptr); 1721 if (pme_asserted) 1722 break; 1723 } 1724 1725 if (msleep_interruptible(100)) 1726 break; 1727 } 1728 1729 return 0; 1730} 1731 1732static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac, 1733 struct ieee80211_vif *vif) 1734{ 1735 /* skip the one we keep connection on */ 1736 if (_data == vif) 1737 return; 1738 1739 if (vif->type == NL80211_IFTYPE_STATION) 1740 ieee80211_connection_loss(vif); 1741} 1742 1743static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file) 1744{ 1745 struct iwl_mvm *mvm = inode->i_private; 1746 int remaining_time = 10; 1747 1748 mvm->d3_test_active = false; 1749 __iwl_mvm_resume(mvm, true); 1750 iwl_abort_notification_waits(&mvm->notif_wait); 1751 ieee80211_restart_hw(mvm->hw); 1752 1753 /* wait for restart and disconnect all interfaces */ 1754 while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 1755 remaining_time > 0) { 1756 remaining_time--; 1757 msleep(1000); 1758 } 1759 1760 if (remaining_time == 0) 1761 IWL_ERR(mvm, "Timed out waiting for HW restart to finish!\n"); 1762 1763 ieee80211_iterate_active_interfaces_atomic( 1764 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1765 iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif); 1766 1767 ieee80211_wake_queues(mvm->hw); 1768 1769 return 0; 1770} 1771 1772const struct file_operations iwl_dbgfs_d3_test_ops = { 1773 .llseek = no_llseek, 1774 .open = iwl_mvm_d3_test_open, 1775 .read = iwl_mvm_d3_test_read, 1776 .release = iwl_mvm_d3_test_release, 1777}; 1778#endif 1779