d3.c revision bca49d9a220b2f277f8e6000ac3a9d129d88972c
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, 0, 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->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; 332out_unlock: 333 mutex_unlock(&mvm->mutex); 334} 335 336static 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 }; 344 int i, err; 345 346 if (!wowlan->n_patterns) 347 return 0; 348 349 cmd.len[0] = sizeof(*pattern_cmd) + 350 wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern); 351 352 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL); 353 if (!pattern_cmd) 354 return -ENOMEM; 355 356 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns); 357 358 for (i = 0; i < wowlan->n_patterns; i++) { 359 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8); 360 361 memcpy(&pattern_cmd->patterns[i].mask, 362 wowlan->patterns[i].mask, mask_len); 363 memcpy(&pattern_cmd->patterns[i].pattern, 364 wowlan->patterns[i].pattern, 365 wowlan->patterns[i].pattern_len); 366 pattern_cmd->patterns[i].mask_size = mask_len; 367 pattern_cmd->patterns[i].pattern_size = 368 wowlan->patterns[i].pattern_len; 369 } 370 371 cmd.data[0] = pattern_cmd; 372 err = iwl_mvm_send_cmd(mvm, &cmd); 373 kfree(pattern_cmd); 374 return err; 375} 376 377enum iwl_mvm_tcp_packet_type { 378 MVM_TCP_TX_SYN, 379 MVM_TCP_RX_SYNACK, 380 MVM_TCP_TX_DATA, 381 MVM_TCP_RX_ACK, 382 MVM_TCP_RX_WAKE, 383 MVM_TCP_TX_FIN, 384}; 385 386static __le16 pseudo_hdr_check(int len, __be32 saddr, __be32 daddr) 387{ 388 __sum16 check = tcp_v4_check(len, saddr, daddr, 0); 389 return cpu_to_le16(be16_to_cpu((__force __be16)check)); 390} 391 392static void iwl_mvm_build_tcp_packet(struct ieee80211_vif *vif, 393 struct cfg80211_wowlan_tcp *tcp, 394 void *_pkt, u8 *mask, 395 __le16 *pseudo_hdr_csum, 396 enum iwl_mvm_tcp_packet_type ptype) 397{ 398 struct { 399 struct ethhdr eth; 400 struct iphdr ip; 401 struct tcphdr tcp; 402 u8 data[]; 403 } __packed *pkt = _pkt; 404 u16 ip_tot_len = sizeof(struct iphdr) + sizeof(struct tcphdr); 405 int i; 406 407 pkt->eth.h_proto = cpu_to_be16(ETH_P_IP), 408 pkt->ip.version = 4; 409 pkt->ip.ihl = 5; 410 pkt->ip.protocol = IPPROTO_TCP; 411 412 switch (ptype) { 413 case MVM_TCP_TX_SYN: 414 case MVM_TCP_TX_DATA: 415 case MVM_TCP_TX_FIN: 416 memcpy(pkt->eth.h_dest, tcp->dst_mac, ETH_ALEN); 417 memcpy(pkt->eth.h_source, vif->addr, ETH_ALEN); 418 pkt->ip.ttl = 128; 419 pkt->ip.saddr = tcp->src; 420 pkt->ip.daddr = tcp->dst; 421 pkt->tcp.source = cpu_to_be16(tcp->src_port); 422 pkt->tcp.dest = cpu_to_be16(tcp->dst_port); 423 /* overwritten for TX SYN later */ 424 pkt->tcp.doff = sizeof(struct tcphdr) / 4; 425 pkt->tcp.window = cpu_to_be16(65000); 426 break; 427 case MVM_TCP_RX_SYNACK: 428 case MVM_TCP_RX_ACK: 429 case MVM_TCP_RX_WAKE: 430 memcpy(pkt->eth.h_dest, vif->addr, ETH_ALEN); 431 memcpy(pkt->eth.h_source, tcp->dst_mac, ETH_ALEN); 432 pkt->ip.saddr = tcp->dst; 433 pkt->ip.daddr = tcp->src; 434 pkt->tcp.source = cpu_to_be16(tcp->dst_port); 435 pkt->tcp.dest = cpu_to_be16(tcp->src_port); 436 break; 437 default: 438 WARN_ON(1); 439 return; 440 } 441 442 switch (ptype) { 443 case MVM_TCP_TX_SYN: 444 /* firmware assumes 8 option bytes - 8 NOPs for now */ 445 memset(pkt->data, 0x01, 8); 446 ip_tot_len += 8; 447 pkt->tcp.doff = (sizeof(struct tcphdr) + 8) / 4; 448 pkt->tcp.syn = 1; 449 break; 450 case MVM_TCP_TX_DATA: 451 ip_tot_len += tcp->payload_len; 452 memcpy(pkt->data, tcp->payload, tcp->payload_len); 453 pkt->tcp.psh = 1; 454 pkt->tcp.ack = 1; 455 break; 456 case MVM_TCP_TX_FIN: 457 pkt->tcp.fin = 1; 458 pkt->tcp.ack = 1; 459 break; 460 case MVM_TCP_RX_SYNACK: 461 pkt->tcp.syn = 1; 462 pkt->tcp.ack = 1; 463 break; 464 case MVM_TCP_RX_ACK: 465 pkt->tcp.ack = 1; 466 break; 467 case MVM_TCP_RX_WAKE: 468 ip_tot_len += tcp->wake_len; 469 pkt->tcp.psh = 1; 470 pkt->tcp.ack = 1; 471 memcpy(pkt->data, tcp->wake_data, tcp->wake_len); 472 break; 473 } 474 475 switch (ptype) { 476 case MVM_TCP_TX_SYN: 477 case MVM_TCP_TX_DATA: 478 case MVM_TCP_TX_FIN: 479 pkt->ip.tot_len = cpu_to_be16(ip_tot_len); 480 pkt->ip.check = ip_fast_csum(&pkt->ip, pkt->ip.ihl); 481 break; 482 case MVM_TCP_RX_WAKE: 483 for (i = 0; i < DIV_ROUND_UP(tcp->wake_len, 8); i++) { 484 u8 tmp = tcp->wake_mask[i]; 485 mask[i + 6] |= tmp << 6; 486 if (i + 1 < DIV_ROUND_UP(tcp->wake_len, 8)) 487 mask[i + 7] = tmp >> 2; 488 } 489 /* fall through for ethernet/IP/TCP headers mask */ 490 case MVM_TCP_RX_SYNACK: 491 case MVM_TCP_RX_ACK: 492 mask[0] = 0xff; /* match ethernet */ 493 /* 494 * match ethernet, ip.version, ip.ihl 495 * the ip.ihl half byte is really masked out by firmware 496 */ 497 mask[1] = 0x7f; 498 mask[2] = 0x80; /* match ip.protocol */ 499 mask[3] = 0xfc; /* match ip.saddr, ip.daddr */ 500 mask[4] = 0x3f; /* match ip.daddr, tcp.source, tcp.dest */ 501 mask[5] = 0x80; /* match tcp flags */ 502 /* leave rest (0 or set for MVM_TCP_RX_WAKE) */ 503 break; 504 }; 505 506 *pseudo_hdr_csum = pseudo_hdr_check(ip_tot_len - sizeof(struct iphdr), 507 pkt->ip.saddr, pkt->ip.daddr); 508} 509 510static int iwl_mvm_send_remote_wake_cfg(struct iwl_mvm *mvm, 511 struct ieee80211_vif *vif, 512 struct cfg80211_wowlan_tcp *tcp) 513{ 514 struct iwl_wowlan_remote_wake_config *cfg; 515 struct iwl_host_cmd cmd = { 516 .id = REMOTE_WAKE_CONFIG_CMD, 517 .len = { sizeof(*cfg), }, 518 .dataflags = { IWL_HCMD_DFL_NOCOPY, }, 519 }; 520 int ret; 521 522 if (!tcp) 523 return 0; 524 525 cfg = kzalloc(sizeof(*cfg), GFP_KERNEL); 526 if (!cfg) 527 return -ENOMEM; 528 cmd.data[0] = cfg; 529 530 cfg->max_syn_retries = 10; 531 cfg->max_data_retries = 10; 532 cfg->tcp_syn_ack_timeout = 1; /* seconds */ 533 cfg->tcp_ack_timeout = 1; /* seconds */ 534 535 /* SYN (TX) */ 536 iwl_mvm_build_tcp_packet( 537 vif, tcp, cfg->syn_tx.data, NULL, 538 &cfg->syn_tx.info.tcp_pseudo_header_checksum, 539 MVM_TCP_TX_SYN); 540 cfg->syn_tx.info.tcp_payload_length = 0; 541 542 /* SYN/ACK (RX) */ 543 iwl_mvm_build_tcp_packet( 544 vif, tcp, cfg->synack_rx.data, cfg->synack_rx.rx_mask, 545 &cfg->synack_rx.info.tcp_pseudo_header_checksum, 546 MVM_TCP_RX_SYNACK); 547 cfg->synack_rx.info.tcp_payload_length = 0; 548 549 /* KEEPALIVE/ACK (TX) */ 550 iwl_mvm_build_tcp_packet( 551 vif, tcp, cfg->keepalive_tx.data, NULL, 552 &cfg->keepalive_tx.info.tcp_pseudo_header_checksum, 553 MVM_TCP_TX_DATA); 554 cfg->keepalive_tx.info.tcp_payload_length = 555 cpu_to_le16(tcp->payload_len); 556 cfg->sequence_number_offset = tcp->payload_seq.offset; 557 /* length must be 0..4, the field is little endian */ 558 cfg->sequence_number_length = tcp->payload_seq.len; 559 cfg->initial_sequence_number = cpu_to_le32(tcp->payload_seq.start); 560 cfg->keepalive_interval = cpu_to_le16(tcp->data_interval); 561 if (tcp->payload_tok.len) { 562 cfg->token_offset = tcp->payload_tok.offset; 563 cfg->token_length = tcp->payload_tok.len; 564 cfg->num_tokens = 565 cpu_to_le16(tcp->tokens_size % tcp->payload_tok.len); 566 memcpy(cfg->tokens, tcp->payload_tok.token_stream, 567 tcp->tokens_size); 568 } else { 569 /* set tokens to max value to almost never run out */ 570 cfg->num_tokens = cpu_to_le16(65535); 571 } 572 573 /* ACK (RX) */ 574 iwl_mvm_build_tcp_packet( 575 vif, tcp, cfg->keepalive_ack_rx.data, 576 cfg->keepalive_ack_rx.rx_mask, 577 &cfg->keepalive_ack_rx.info.tcp_pseudo_header_checksum, 578 MVM_TCP_RX_ACK); 579 cfg->keepalive_ack_rx.info.tcp_payload_length = 0; 580 581 /* WAKEUP (RX) */ 582 iwl_mvm_build_tcp_packet( 583 vif, tcp, cfg->wake_rx.data, cfg->wake_rx.rx_mask, 584 &cfg->wake_rx.info.tcp_pseudo_header_checksum, 585 MVM_TCP_RX_WAKE); 586 cfg->wake_rx.info.tcp_payload_length = 587 cpu_to_le16(tcp->wake_len); 588 589 /* FIN */ 590 iwl_mvm_build_tcp_packet( 591 vif, tcp, cfg->fin_tx.data, NULL, 592 &cfg->fin_tx.info.tcp_pseudo_header_checksum, 593 MVM_TCP_TX_FIN); 594 cfg->fin_tx.info.tcp_payload_length = 0; 595 596 ret = iwl_mvm_send_cmd(mvm, &cmd); 597 kfree(cfg); 598 599 return ret; 600} 601 602struct iwl_d3_iter_data { 603 struct iwl_mvm *mvm; 604 struct ieee80211_vif *vif; 605 bool error; 606}; 607 608static void iwl_mvm_d3_iface_iterator(void *_data, u8 *mac, 609 struct ieee80211_vif *vif) 610{ 611 struct iwl_d3_iter_data *data = _data; 612 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 613 614 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p) 615 return; 616 617 if (mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT) 618 return; 619 620 if (data->vif) { 621 IWL_ERR(data->mvm, "More than one managed interface active!\n"); 622 data->error = true; 623 return; 624 } 625 626 data->vif = vif; 627} 628 629static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 630 struct ieee80211_sta *ap_sta) 631{ 632 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 633 struct ieee80211_chanctx_conf *ctx; 634 u8 chains_static, chains_dynamic; 635 struct cfg80211_chan_def chandef; 636 int ret, i; 637 struct iwl_binding_cmd binding_cmd = {}; 638 struct iwl_time_quota_cmd quota_cmd = {}; 639 u32 status; 640 641 /* add back the PHY */ 642 if (WARN_ON(!mvmvif->phy_ctxt)) 643 return -EINVAL; 644 645 rcu_read_lock(); 646 ctx = rcu_dereference(vif->chanctx_conf); 647 if (WARN_ON(!ctx)) { 648 rcu_read_unlock(); 649 return -EINVAL; 650 } 651 chandef = ctx->def; 652 chains_static = ctx->rx_chains_static; 653 chains_dynamic = ctx->rx_chains_dynamic; 654 rcu_read_unlock(); 655 656 ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt, &chandef, 657 chains_static, chains_dynamic); 658 if (ret) 659 return ret; 660 661 /* add back the MAC */ 662 mvmvif->uploaded = false; 663 664 if (WARN_ON(!vif->bss_conf.assoc)) 665 return -EINVAL; 666 667 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 668 if (ret) 669 return ret; 670 671 /* add back binding - XXX refactor? */ 672 binding_cmd.id_and_color = 673 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id, 674 mvmvif->phy_ctxt->color)); 675 binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD); 676 binding_cmd.phy = 677 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id, 678 mvmvif->phy_ctxt->color)); 679 binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 680 mvmvif->color)); 681 for (i = 1; i < MAX_MACS_IN_BINDING; i++) 682 binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID); 683 684 status = 0; 685 ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD, 686 sizeof(binding_cmd), &binding_cmd, 687 &status); 688 if (ret) { 689 IWL_ERR(mvm, "Failed to add binding: %d\n", ret); 690 return ret; 691 } 692 693 if (status) { 694 IWL_ERR(mvm, "Binding command failed: %u\n", status); 695 return -EIO; 696 } 697 698 ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false); 699 if (ret) 700 return ret; 701 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], ap_sta); 702 703 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false); 704 if (ret) 705 return ret; 706 707 /* and some quota */ 708 quota_cmd.quotas[0].id_and_color = 709 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id, 710 mvmvif->phy_ctxt->color)); 711 quota_cmd.quotas[0].quota = cpu_to_le32(IWL_MVM_MAX_QUOTA); 712 quota_cmd.quotas[0].max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA); 713 714 for (i = 1; i < MAX_BINDINGS; i++) 715 quota_cmd.quotas[i].id_and_color = cpu_to_le32(FW_CTXT_INVALID); 716 717 ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0, 718 sizeof(quota_cmd), "a_cmd); 719 if (ret) 720 IWL_ERR(mvm, "Failed to send quota: %d\n", ret); 721 722 return 0; 723} 724 725static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm, 726 struct ieee80211_vif *vif) 727{ 728 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 729 struct iwl_nonqos_seq_query_cmd query_cmd = { 730 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET), 731 .mac_id_n_color = 732 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 733 mvmvif->color)), 734 }; 735 struct iwl_host_cmd cmd = { 736 .id = NON_QOS_TX_COUNTER_CMD, 737 .flags = CMD_WANT_SKB, 738 }; 739 int err; 740 u32 size; 741 742 cmd.data[0] = &query_cmd; 743 cmd.len[0] = sizeof(query_cmd); 744 745 err = iwl_mvm_send_cmd(mvm, &cmd); 746 if (err) 747 return err; 748 749 size = iwl_rx_packet_payload_len(cmd.resp_pkt); 750 if (size < sizeof(__le16)) { 751 err = -EINVAL; 752 } else { 753 err = le16_to_cpup((__le16 *)cmd.resp_pkt->data); 754 /* firmware returns next, not last-used seqno */ 755 err = (u16) (err - 0x10); 756 } 757 758 iwl_free_resp(&cmd); 759 return err; 760} 761 762void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 763{ 764 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 765 struct iwl_nonqos_seq_query_cmd query_cmd = { 766 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET), 767 .mac_id_n_color = 768 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 769 mvmvif->color)), 770 .value = cpu_to_le16(mvmvif->seqno), 771 }; 772 773 /* return if called during restart, not resume from D3 */ 774 if (!mvmvif->seqno_valid) 775 return; 776 777 mvmvif->seqno_valid = false; 778 779 if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0, 780 sizeof(query_cmd), &query_cmd)) 781 IWL_ERR(mvm, "failed to set non-QoS seqno\n"); 782} 783 784static int 785iwl_mvm_send_wowlan_config_cmd(struct iwl_mvm *mvm, 786 const struct iwl_wowlan_config_cmd_v3 *cmd) 787{ 788 /* start only with the v2 part of the command */ 789 u16 cmd_len = sizeof(cmd->common); 790 791 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_WOWLAN_CONFIG_TID) 792 cmd_len = sizeof(*cmd); 793 794 return iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0, 795 cmd_len, cmd); 796} 797 798static int __iwl_mvm_suspend(struct ieee80211_hw *hw, 799 struct cfg80211_wowlan *wowlan, 800 bool test) 801{ 802 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 803 struct iwl_d3_iter_data suspend_iter_data = { 804 .mvm = mvm, 805 }; 806 struct ieee80211_vif *vif; 807 struct iwl_mvm_vif *mvmvif; 808 struct ieee80211_sta *ap_sta; 809 struct iwl_mvm_sta *mvm_ap_sta; 810 struct iwl_wowlan_config_cmd_v3 wowlan_config_cmd = {}; 811 struct iwl_wowlan_kek_kck_material_cmd kek_kck_cmd = {}; 812 struct iwl_wowlan_tkip_params_cmd tkip_cmd = {}; 813 struct iwl_d3_manager_config d3_cfg_cmd_data = { 814 /* 815 * Program the minimum sleep time to 10 seconds, as many 816 * platforms have issues processing a wakeup signal while 817 * still being in the process of suspending. 818 */ 819 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000), 820 }; 821 struct iwl_host_cmd d3_cfg_cmd = { 822 .id = D3_CONFIG_CMD, 823 .flags = CMD_WANT_SKB, 824 .data[0] = &d3_cfg_cmd_data, 825 .len[0] = sizeof(d3_cfg_cmd_data), 826 }; 827 struct wowlan_key_data key_data = { 828 .use_rsc_tsc = false, 829 .tkip = &tkip_cmd, 830 .use_tkip = false, 831 }; 832 int ret; 833 int len __maybe_unused; 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 /* see if there's only a single BSS vif and it's associated */ 851 ieee80211_iterate_active_interfaces_atomic( 852 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 853 iwl_mvm_d3_iface_iterator, &suspend_iter_data); 854 855 if (suspend_iter_data.error || !suspend_iter_data.vif) { 856 ret = 1; 857 goto out_noreset; 858 } 859 860 vif = suspend_iter_data.vif; 861 mvmvif = iwl_mvm_vif_from_mac80211(vif); 862 863 ap_sta = rcu_dereference_protected( 864 mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], 865 lockdep_is_held(&mvm->mutex)); 866 if (IS_ERR_OR_NULL(ap_sta)) { 867 ret = -EINVAL; 868 goto out_noreset; 869 } 870 871 mvm_ap_sta = (struct iwl_mvm_sta *)ap_sta->drv_priv; 872 873 /* TODO: wowlan_config_cmd.common.wowlan_ba_teardown_tids */ 874 875 wowlan_config_cmd.common.is_11n_connection = 876 ap_sta->ht_cap.ht_supported; 877 878 /* Query the last used seqno and set it */ 879 ret = iwl_mvm_get_last_nonqos_seq(mvm, vif); 880 if (ret < 0) 881 goto out_noreset; 882 wowlan_config_cmd.common.non_qos_seq = cpu_to_le16(ret); 883 884 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, &wowlan_config_cmd.common); 885 886 if (wowlan->disconnect) 887 wowlan_config_cmd.common.wakeup_filter |= 888 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS | 889 IWL_WOWLAN_WAKEUP_LINK_CHANGE); 890 if (wowlan->magic_pkt) 891 wowlan_config_cmd.common.wakeup_filter |= 892 cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET); 893 if (wowlan->gtk_rekey_failure) 894 wowlan_config_cmd.common.wakeup_filter |= 895 cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL); 896 if (wowlan->eap_identity_req) 897 wowlan_config_cmd.common.wakeup_filter |= 898 cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ); 899 if (wowlan->four_way_handshake) 900 wowlan_config_cmd.common.wakeup_filter |= 901 cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE); 902 if (wowlan->n_patterns) 903 wowlan_config_cmd.common.wakeup_filter |= 904 cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH); 905 906 if (wowlan->rfkill_release) 907 wowlan_config_cmd.common.wakeup_filter |= 908 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT); 909 910 if (wowlan->tcp) { 911 /* 912 * Set the "link change" (really "link lost") flag as well 913 * since that implies losing the TCP connection. 914 */ 915 wowlan_config_cmd.common.wakeup_filter |= 916 cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS | 917 IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE | 918 IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET | 919 IWL_WOWLAN_WAKEUP_LINK_CHANGE); 920 } 921 922 iwl_mvm_cancel_scan(mvm); 923 924 iwl_trans_stop_device(mvm->trans); 925 926 /* 927 * Set the HW restart bit -- this is mostly true as we're 928 * going to load new firmware and reprogram that, though 929 * the reprogramming is going to be manual to avoid adding 930 * all the MACs that aren't support. 931 * We don't have to clear up everything though because the 932 * reprogramming is manual. When we resume, we'll actually 933 * go through a proper restart sequence again to switch 934 * back to the runtime firmware image. 935 */ 936 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 937 938 /* We reprogram keys and shouldn't allocate new key indices */ 939 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); 940 941 mvm->ptk_ivlen = 0; 942 mvm->ptk_icvlen = 0; 943 mvm->ptk_ivlen = 0; 944 mvm->ptk_icvlen = 0; 945 946 ret = iwl_mvm_load_d3_fw(mvm); 947 if (ret) 948 goto out; 949 950 ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta); 951 if (ret) 952 goto out; 953 954 if (!iwlwifi_mod_params.sw_crypto) { 955 /* 956 * This needs to be unlocked due to lock ordering 957 * constraints. Since we're in the suspend path 958 * that isn't really a problem though. 959 */ 960 mutex_unlock(&mvm->mutex); 961 ieee80211_iter_keys(mvm->hw, vif, 962 iwl_mvm_wowlan_program_keys, 963 &key_data); 964 mutex_lock(&mvm->mutex); 965 if (key_data.error) { 966 ret = -EIO; 967 goto out; 968 } 969 970 if (key_data.use_rsc_tsc) { 971 struct iwl_host_cmd rsc_tsc_cmd = { 972 .id = WOWLAN_TSC_RSC_PARAM, 973 .data[0] = key_data.rsc_tsc, 974 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 975 .len[0] = sizeof(*key_data.rsc_tsc), 976 }; 977 978 ret = iwl_mvm_send_cmd(mvm, &rsc_tsc_cmd); 979 if (ret) 980 goto out; 981 } 982 983 if (key_data.use_tkip) { 984 ret = iwl_mvm_send_cmd_pdu(mvm, 985 WOWLAN_TKIP_PARAM, 986 0, sizeof(tkip_cmd), 987 &tkip_cmd); 988 if (ret) 989 goto out; 990 } 991 992 if (mvmvif->rekey_data.valid) { 993 memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd)); 994 memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck, 995 NL80211_KCK_LEN); 996 kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN); 997 memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek, 998 NL80211_KEK_LEN); 999 kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN); 1000 kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr; 1001 1002 ret = iwl_mvm_send_cmd_pdu(mvm, 1003 WOWLAN_KEK_KCK_MATERIAL, 0, 1004 sizeof(kek_kck_cmd), 1005 &kek_kck_cmd); 1006 if (ret) 1007 goto out; 1008 } 1009 } 1010 1011 ret = iwl_mvm_send_wowlan_config_cmd(mvm, &wowlan_config_cmd); 1012 if (ret) 1013 goto out; 1014 1015 ret = iwl_mvm_send_patterns(mvm, wowlan); 1016 if (ret) 1017 goto out; 1018 1019 ret = iwl_mvm_send_proto_offload(mvm, vif, false, 0); 1020 if (ret) 1021 goto out; 1022 1023 ret = iwl_mvm_send_remote_wake_cfg(mvm, vif, wowlan->tcp); 1024 if (ret) 1025 goto out; 1026 1027 ret = iwl_mvm_power_update_device(mvm); 1028 if (ret) 1029 goto out; 1030 1031 ret = iwl_mvm_power_update_mac(mvm, vif); 1032 if (ret) 1033 goto out; 1034 1035#ifdef CONFIG_IWLWIFI_DEBUGFS 1036 if (mvm->d3_wake_sysassert) 1037 d3_cfg_cmd_data.wakeup_flags |= 1038 cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR); 1039#endif 1040 1041 /* must be last -- this switches firmware state */ 1042 ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd); 1043 if (ret) 1044 goto out; 1045#ifdef CONFIG_IWLWIFI_DEBUGFS 1046 len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt); 1047 if (len >= sizeof(u32)) { 1048 mvm->d3_test_pme_ptr = 1049 le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data); 1050 } 1051#endif 1052 iwl_free_resp(&d3_cfg_cmd); 1053 1054 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1055 1056 iwl_trans_d3_suspend(mvm->trans, test); 1057 out: 1058 if (ret < 0) 1059 ieee80211_restart_hw(mvm->hw); 1060 out_noreset: 1061 kfree(key_data.rsc_tsc); 1062 1063 mutex_unlock(&mvm->mutex); 1064 1065 return ret; 1066} 1067 1068int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) 1069{ 1070 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1071 1072 if (iwl_mvm_is_d0i3_supported(mvm)) { 1073 mutex_lock(&mvm->d0i3_suspend_mutex); 1074 __set_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags); 1075 mutex_unlock(&mvm->d0i3_suspend_mutex); 1076 return 0; 1077 } 1078 1079 return __iwl_mvm_suspend(hw, wowlan, false); 1080} 1081 1082/* converted data from the different status responses */ 1083struct iwl_wowlan_status_data { 1084 u16 pattern_number; 1085 u16 qos_seq_ctr[8]; 1086 u32 wakeup_reasons; 1087 u32 wake_packet_length; 1088 u32 wake_packet_bufsize; 1089 const u8 *wake_packet; 1090}; 1091 1092static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm, 1093 struct ieee80211_vif *vif, 1094 struct iwl_wowlan_status_data *status) 1095{ 1096 struct sk_buff *pkt = NULL; 1097 struct cfg80211_wowlan_wakeup wakeup = { 1098 .pattern_idx = -1, 1099 }; 1100 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; 1101 u32 reasons = status->wakeup_reasons; 1102 1103 if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) { 1104 wakeup_report = NULL; 1105 goto report; 1106 } 1107 1108 if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET) 1109 wakeup.magic_pkt = true; 1110 1111 if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN) 1112 wakeup.pattern_idx = 1113 status->pattern_number; 1114 1115 if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 1116 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)) 1117 wakeup.disconnect = true; 1118 1119 if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE) 1120 wakeup.gtk_rekey_failure = true; 1121 1122 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 1123 wakeup.rfkill_release = true; 1124 1125 if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST) 1126 wakeup.eap_identity_req = true; 1127 1128 if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE) 1129 wakeup.four_way_handshake = true; 1130 1131 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS) 1132 wakeup.tcp_connlost = true; 1133 1134 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE) 1135 wakeup.tcp_nomoretokens = true; 1136 1137 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET) 1138 wakeup.tcp_match = true; 1139 1140 if (status->wake_packet_bufsize) { 1141 int pktsize = status->wake_packet_bufsize; 1142 int pktlen = status->wake_packet_length; 1143 const u8 *pktdata = status->wake_packet; 1144 struct ieee80211_hdr *hdr = (void *)pktdata; 1145 int truncated = pktlen - pktsize; 1146 1147 /* this would be a firmware bug */ 1148 if (WARN_ON_ONCE(truncated < 0)) 1149 truncated = 0; 1150 1151 if (ieee80211_is_data(hdr->frame_control)) { 1152 int hdrlen = ieee80211_hdrlen(hdr->frame_control); 1153 int ivlen = 0, icvlen = 4; /* also FCS */ 1154 1155 pkt = alloc_skb(pktsize, GFP_KERNEL); 1156 if (!pkt) 1157 goto report; 1158 1159 memcpy(skb_put(pkt, hdrlen), pktdata, hdrlen); 1160 pktdata += hdrlen; 1161 pktsize -= hdrlen; 1162 1163 if (ieee80211_has_protected(hdr->frame_control)) { 1164 /* 1165 * This is unlocked and using gtk_i(c)vlen, 1166 * but since everything is under RTNL still 1167 * that's not really a problem - changing 1168 * it would be difficult. 1169 */ 1170 if (is_multicast_ether_addr(hdr->addr1)) { 1171 ivlen = mvm->gtk_ivlen; 1172 icvlen += mvm->gtk_icvlen; 1173 } else { 1174 ivlen = mvm->ptk_ivlen; 1175 icvlen += mvm->ptk_icvlen; 1176 } 1177 } 1178 1179 /* if truncated, FCS/ICV is (partially) gone */ 1180 if (truncated >= icvlen) { 1181 icvlen = 0; 1182 truncated -= icvlen; 1183 } else { 1184 icvlen -= truncated; 1185 truncated = 0; 1186 } 1187 1188 pktsize -= ivlen + icvlen; 1189 pktdata += ivlen; 1190 1191 memcpy(skb_put(pkt, pktsize), pktdata, pktsize); 1192 1193 if (ieee80211_data_to_8023(pkt, vif->addr, vif->type)) 1194 goto report; 1195 wakeup.packet = pkt->data; 1196 wakeup.packet_present_len = pkt->len; 1197 wakeup.packet_len = pkt->len - truncated; 1198 wakeup.packet_80211 = false; 1199 } else { 1200 int fcslen = 4; 1201 1202 if (truncated >= 4) { 1203 truncated -= 4; 1204 fcslen = 0; 1205 } else { 1206 fcslen -= truncated; 1207 truncated = 0; 1208 } 1209 pktsize -= fcslen; 1210 wakeup.packet = status->wake_packet; 1211 wakeup.packet_present_len = pktsize; 1212 wakeup.packet_len = pktlen - truncated; 1213 wakeup.packet_80211 = true; 1214 } 1215 } 1216 1217 report: 1218 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); 1219 kfree_skb(pkt); 1220} 1221 1222static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc, 1223 struct ieee80211_key_seq *seq) 1224{ 1225 u64 pn; 1226 1227 pn = le64_to_cpu(sc->pn); 1228 seq->ccmp.pn[0] = pn >> 40; 1229 seq->ccmp.pn[1] = pn >> 32; 1230 seq->ccmp.pn[2] = pn >> 24; 1231 seq->ccmp.pn[3] = pn >> 16; 1232 seq->ccmp.pn[4] = pn >> 8; 1233 seq->ccmp.pn[5] = pn; 1234} 1235 1236static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc, 1237 struct ieee80211_key_seq *seq) 1238{ 1239 seq->tkip.iv32 = le32_to_cpu(sc->iv32); 1240 seq->tkip.iv16 = le16_to_cpu(sc->iv16); 1241} 1242 1243static void iwl_mvm_set_aes_rx_seq(struct aes_sc *scs, 1244 struct ieee80211_key_conf *key) 1245{ 1246 int tid; 1247 1248 BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS); 1249 1250 for (tid = 0; tid < IWL_NUM_RSC; tid++) { 1251 struct ieee80211_key_seq seq = {}; 1252 1253 iwl_mvm_aes_sc_to_seq(&scs[tid], &seq); 1254 ieee80211_set_key_rx_seq(key, tid, &seq); 1255 } 1256} 1257 1258static void iwl_mvm_set_tkip_rx_seq(struct tkip_sc *scs, 1259 struct ieee80211_key_conf *key) 1260{ 1261 int tid; 1262 1263 BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS); 1264 1265 for (tid = 0; tid < IWL_NUM_RSC; tid++) { 1266 struct ieee80211_key_seq seq = {}; 1267 1268 iwl_mvm_tkip_sc_to_seq(&scs[tid], &seq); 1269 ieee80211_set_key_rx_seq(key, tid, &seq); 1270 } 1271} 1272 1273static void iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf *key, 1274 struct iwl_wowlan_status *status) 1275{ 1276 union iwl_all_tsc_rsc *rsc = &status->gtk.rsc.all_tsc_rsc; 1277 1278 switch (key->cipher) { 1279 case WLAN_CIPHER_SUITE_CCMP: 1280 iwl_mvm_set_aes_rx_seq(rsc->aes.multicast_rsc, key); 1281 break; 1282 case WLAN_CIPHER_SUITE_TKIP: 1283 iwl_mvm_set_tkip_rx_seq(rsc->tkip.multicast_rsc, key); 1284 break; 1285 default: 1286 WARN_ON(1); 1287 } 1288} 1289 1290struct iwl_mvm_d3_gtk_iter_data { 1291 struct iwl_wowlan_status *status; 1292 void *last_gtk; 1293 u32 cipher; 1294 bool find_phase, unhandled_cipher; 1295 int num_keys; 1296}; 1297 1298static void iwl_mvm_d3_update_gtks(struct ieee80211_hw *hw, 1299 struct ieee80211_vif *vif, 1300 struct ieee80211_sta *sta, 1301 struct ieee80211_key_conf *key, 1302 void *_data) 1303{ 1304 struct iwl_mvm_d3_gtk_iter_data *data = _data; 1305 1306 if (data->unhandled_cipher) 1307 return; 1308 1309 switch (key->cipher) { 1310 case WLAN_CIPHER_SUITE_WEP40: 1311 case WLAN_CIPHER_SUITE_WEP104: 1312 /* ignore WEP completely, nothing to do */ 1313 return; 1314 case WLAN_CIPHER_SUITE_CCMP: 1315 case WLAN_CIPHER_SUITE_TKIP: 1316 /* we support these */ 1317 break; 1318 default: 1319 /* everything else (even CMAC for MFP) - disconnect from AP */ 1320 data->unhandled_cipher = true; 1321 return; 1322 } 1323 1324 data->num_keys++; 1325 1326 /* 1327 * pairwise key - update sequence counters only; 1328 * note that this assumes no TDLS sessions are active 1329 */ 1330 if (sta) { 1331 struct ieee80211_key_seq seq = {}; 1332 union iwl_all_tsc_rsc *sc = &data->status->gtk.rsc.all_tsc_rsc; 1333 1334 if (data->find_phase) 1335 return; 1336 1337 switch (key->cipher) { 1338 case WLAN_CIPHER_SUITE_CCMP: 1339 iwl_mvm_aes_sc_to_seq(&sc->aes.tsc, &seq); 1340 iwl_mvm_set_aes_rx_seq(sc->aes.unicast_rsc, key); 1341 break; 1342 case WLAN_CIPHER_SUITE_TKIP: 1343 iwl_mvm_tkip_sc_to_seq(&sc->tkip.tsc, &seq); 1344 iwl_mvm_set_tkip_rx_seq(sc->tkip.unicast_rsc, key); 1345 break; 1346 } 1347 ieee80211_set_key_tx_seq(key, &seq); 1348 1349 /* that's it for this key */ 1350 return; 1351 } 1352 1353 if (data->find_phase) { 1354 data->last_gtk = key; 1355 data->cipher = key->cipher; 1356 return; 1357 } 1358 1359 if (data->status->num_of_gtk_rekeys) 1360 ieee80211_remove_key(key); 1361 else if (data->last_gtk == key) 1362 iwl_mvm_set_key_rx_seq(key, data->status); 1363} 1364 1365static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm, 1366 struct ieee80211_vif *vif, 1367 struct iwl_wowlan_status *status) 1368{ 1369 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1370 struct iwl_mvm_d3_gtk_iter_data gtkdata = { 1371 .status = status, 1372 }; 1373 u32 disconnection_reasons = 1374 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 1375 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH; 1376 1377 if (!status || !vif->bss_conf.bssid) 1378 return false; 1379 1380 if (le32_to_cpu(status->wakeup_reasons) & disconnection_reasons) 1381 return false; 1382 1383 /* find last GTK that we used initially, if any */ 1384 gtkdata.find_phase = true; 1385 ieee80211_iter_keys(mvm->hw, vif, 1386 iwl_mvm_d3_update_gtks, >kdata); 1387 /* not trying to keep connections with MFP/unhandled ciphers */ 1388 if (gtkdata.unhandled_cipher) 1389 return false; 1390 if (!gtkdata.num_keys) 1391 goto out; 1392 if (!gtkdata.last_gtk) 1393 return false; 1394 1395 /* 1396 * invalidate all other GTKs that might still exist and update 1397 * the one that we used 1398 */ 1399 gtkdata.find_phase = false; 1400 ieee80211_iter_keys(mvm->hw, vif, 1401 iwl_mvm_d3_update_gtks, >kdata); 1402 1403 if (status->num_of_gtk_rekeys) { 1404 struct ieee80211_key_conf *key; 1405 struct { 1406 struct ieee80211_key_conf conf; 1407 u8 key[32]; 1408 } conf = { 1409 .conf.cipher = gtkdata.cipher, 1410 .conf.keyidx = status->gtk.key_index, 1411 }; 1412 1413 switch (gtkdata.cipher) { 1414 case WLAN_CIPHER_SUITE_CCMP: 1415 conf.conf.keylen = WLAN_KEY_LEN_CCMP; 1416 memcpy(conf.conf.key, status->gtk.decrypt_key, 1417 WLAN_KEY_LEN_CCMP); 1418 break; 1419 case WLAN_CIPHER_SUITE_TKIP: 1420 conf.conf.keylen = WLAN_KEY_LEN_TKIP; 1421 memcpy(conf.conf.key, status->gtk.decrypt_key, 16); 1422 /* leave TX MIC key zeroed, we don't use it anyway */ 1423 memcpy(conf.conf.key + 1424 NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 1425 status->gtk.tkip_mic_key, 8); 1426 break; 1427 } 1428 1429 key = ieee80211_gtk_rekey_add(vif, &conf.conf); 1430 if (IS_ERR(key)) 1431 return false; 1432 iwl_mvm_set_key_rx_seq(key, status); 1433 } 1434 1435 if (status->num_of_gtk_rekeys) { 1436 __be64 replay_ctr = 1437 cpu_to_be64(le64_to_cpu(status->replay_ctr)); 1438 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid, 1439 (void *)&replay_ctr, GFP_KERNEL); 1440 } 1441 1442out: 1443 mvmvif->seqno_valid = true; 1444 /* +0x10 because the set API expects next-to-use, not last-used */ 1445 mvmvif->seqno = le16_to_cpu(status->non_qos_seq_ctr) + 0x10; 1446 1447 return true; 1448} 1449 1450/* releases the MVM mutex */ 1451static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm, 1452 struct ieee80211_vif *vif) 1453{ 1454 u32 base = mvm->error_event_table; 1455 struct error_table_start { 1456 /* cf. struct iwl_error_event_table */ 1457 u32 valid; 1458 u32 error_id; 1459 } err_info; 1460 struct iwl_host_cmd cmd = { 1461 .id = WOWLAN_GET_STATUSES, 1462 .flags = CMD_WANT_SKB, 1463 }; 1464 struct iwl_wowlan_status_data status; 1465 struct iwl_wowlan_status *fw_status; 1466 int ret, len, status_size, i; 1467 bool keep; 1468 struct ieee80211_sta *ap_sta; 1469 struct iwl_mvm_sta *mvm_ap_sta; 1470 1471 iwl_trans_read_mem_bytes(mvm->trans, base, 1472 &err_info, sizeof(err_info)); 1473 1474 if (err_info.valid) { 1475 IWL_INFO(mvm, "error table is valid (%d)\n", 1476 err_info.valid); 1477 if (err_info.error_id == RF_KILL_INDICATOR_FOR_WOWLAN) { 1478 struct cfg80211_wowlan_wakeup wakeup = { 1479 .rfkill_release = true, 1480 }; 1481 ieee80211_report_wowlan_wakeup(vif, &wakeup, 1482 GFP_KERNEL); 1483 } 1484 goto out_unlock; 1485 } 1486 1487 /* only for tracing for now */ 1488 ret = iwl_mvm_send_cmd_pdu(mvm, OFFLOADS_QUERY_CMD, 0, 0, NULL); 1489 if (ret) 1490 IWL_ERR(mvm, "failed to query offload statistics (%d)\n", ret); 1491 1492 ret = iwl_mvm_send_cmd(mvm, &cmd); 1493 if (ret) { 1494 IWL_ERR(mvm, "failed to query status (%d)\n", ret); 1495 goto out_unlock; 1496 } 1497 1498 /* RF-kill already asserted again... */ 1499 if (!cmd.resp_pkt) 1500 goto out_unlock; 1501 1502 status_size = sizeof(*fw_status); 1503 1504 len = iwl_rx_packet_payload_len(cmd.resp_pkt); 1505 if (len < status_size) { 1506 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); 1507 goto out_free_resp; 1508 } 1509 1510 fw_status = (void *)cmd.resp_pkt->data; 1511 1512 status.pattern_number = le16_to_cpu(fw_status->pattern_number); 1513 for (i = 0; i < 8; i++) 1514 status.qos_seq_ctr[i] = 1515 le16_to_cpu(fw_status->qos_seq_ctr[i]); 1516 status.wakeup_reasons = le32_to_cpu(fw_status->wakeup_reasons); 1517 status.wake_packet_length = 1518 le32_to_cpu(fw_status->wake_packet_length); 1519 status.wake_packet_bufsize = 1520 le32_to_cpu(fw_status->wake_packet_bufsize); 1521 status.wake_packet = fw_status->wake_packet; 1522 1523 if (len != status_size + ALIGN(status.wake_packet_bufsize, 4)) { 1524 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); 1525 goto out_free_resp; 1526 } 1527 1528 /* still at hard-coded place 0 for D3 image */ 1529 ap_sta = rcu_dereference_protected( 1530 mvm->fw_id_to_mac_id[0], 1531 lockdep_is_held(&mvm->mutex)); 1532 if (IS_ERR_OR_NULL(ap_sta)) 1533 goto out_free_resp; 1534 1535 mvm_ap_sta = (struct iwl_mvm_sta *)ap_sta->drv_priv; 1536 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1537 u16 seq = status.qos_seq_ctr[i]; 1538 /* firmware stores last-used value, we store next value */ 1539 seq += 0x10; 1540 mvm_ap_sta->tid_data[i].seq_number = seq; 1541 } 1542 1543 /* now we have all the data we need, unlock to avoid mac80211 issues */ 1544 mutex_unlock(&mvm->mutex); 1545 1546 iwl_mvm_report_wakeup_reasons(mvm, vif, &status); 1547 1548 keep = iwl_mvm_setup_connection_keep(mvm, vif, fw_status); 1549 1550 iwl_free_resp(&cmd); 1551 return keep; 1552 1553 out_free_resp: 1554 iwl_free_resp(&cmd); 1555 out_unlock: 1556 mutex_unlock(&mvm->mutex); 1557 return false; 1558} 1559 1560static void iwl_mvm_read_d3_sram(struct iwl_mvm *mvm) 1561{ 1562#ifdef CONFIG_IWLWIFI_DEBUGFS 1563 const struct fw_img *img = &mvm->fw->img[IWL_UCODE_WOWLAN]; 1564 u32 len = img->sec[IWL_UCODE_SECTION_DATA].len; 1565 u32 offs = img->sec[IWL_UCODE_SECTION_DATA].offset; 1566 1567 if (!mvm->store_d3_resume_sram) 1568 return; 1569 1570 if (!mvm->d3_resume_sram) { 1571 mvm->d3_resume_sram = kzalloc(len, GFP_KERNEL); 1572 if (!mvm->d3_resume_sram) 1573 return; 1574 } 1575 1576 iwl_trans_read_mem_bytes(mvm->trans, offs, mvm->d3_resume_sram, len); 1577#endif 1578} 1579 1580static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac, 1581 struct ieee80211_vif *vif) 1582{ 1583 /* skip the one we keep connection on */ 1584 if (data == vif) 1585 return; 1586 1587 if (vif->type == NL80211_IFTYPE_STATION) 1588 ieee80211_resume_disconnect(vif); 1589} 1590 1591static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test) 1592{ 1593 struct iwl_d3_iter_data resume_iter_data = { 1594 .mvm = mvm, 1595 }; 1596 struct ieee80211_vif *vif = NULL; 1597 int ret; 1598 enum iwl_d3_status d3_status; 1599 bool keep = false; 1600 1601 mutex_lock(&mvm->mutex); 1602 1603 /* get the BSS vif pointer again */ 1604 ieee80211_iterate_active_interfaces_atomic( 1605 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1606 iwl_mvm_d3_iface_iterator, &resume_iter_data); 1607 1608 if (WARN_ON(resume_iter_data.error || !resume_iter_data.vif)) 1609 goto out_unlock; 1610 1611 vif = resume_iter_data.vif; 1612 1613 ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test); 1614 if (ret) 1615 goto out_unlock; 1616 1617 if (d3_status != IWL_D3_STATUS_ALIVE) { 1618 IWL_INFO(mvm, "Device was reset during suspend\n"); 1619 goto out_unlock; 1620 } 1621 1622 /* query SRAM first in case we want event logging */ 1623 iwl_mvm_read_d3_sram(mvm); 1624 1625 keep = iwl_mvm_query_wakeup_reasons(mvm, vif); 1626#ifdef CONFIG_IWLWIFI_DEBUGFS 1627 if (keep) 1628 mvm->keep_vif = vif; 1629#endif 1630 /* has unlocked the mutex, so skip that */ 1631 goto out; 1632 1633 out_unlock: 1634 mutex_unlock(&mvm->mutex); 1635 1636 out: 1637 if (!test) 1638 ieee80211_iterate_active_interfaces_rtnl(mvm->hw, 1639 IEEE80211_IFACE_ITER_NORMAL, 1640 iwl_mvm_d3_disconnect_iter, keep ? vif : NULL); 1641 1642 /* return 1 to reconfigure the device */ 1643 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1644 return 1; 1645} 1646 1647int iwl_mvm_resume(struct ieee80211_hw *hw) 1648{ 1649 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1650 1651 if (iwl_mvm_is_d0i3_supported(mvm)) { 1652 bool exit_now; 1653 1654 mutex_lock(&mvm->d0i3_suspend_mutex); 1655 __clear_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags); 1656 exit_now = __test_and_clear_bit(D0I3_PENDING_WAKEUP, 1657 &mvm->d0i3_suspend_flags); 1658 mutex_unlock(&mvm->d0i3_suspend_mutex); 1659 if (exit_now) 1660 _iwl_mvm_exit_d0i3(mvm); 1661 return 0; 1662 } 1663 1664 return __iwl_mvm_resume(mvm, false); 1665} 1666 1667void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled) 1668{ 1669 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1670 1671 device_set_wakeup_enable(mvm->trans->dev, enabled); 1672} 1673 1674#ifdef CONFIG_IWLWIFI_DEBUGFS 1675static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file) 1676{ 1677 struct iwl_mvm *mvm = inode->i_private; 1678 int err; 1679 1680 if (mvm->d3_test_active) 1681 return -EBUSY; 1682 1683 file->private_data = inode->i_private; 1684 1685 ieee80211_stop_queues(mvm->hw); 1686 synchronize_net(); 1687 1688 /* start pseudo D3 */ 1689 rtnl_lock(); 1690 err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true); 1691 rtnl_unlock(); 1692 if (err > 0) 1693 err = -EINVAL; 1694 if (err) { 1695 ieee80211_wake_queues(mvm->hw); 1696 return err; 1697 } 1698 mvm->d3_test_active = true; 1699 mvm->keep_vif = NULL; 1700 return 0; 1701} 1702 1703static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf, 1704 size_t count, loff_t *ppos) 1705{ 1706 struct iwl_mvm *mvm = file->private_data; 1707 u32 pme_asserted; 1708 1709 while (true) { 1710 /* read pme_ptr if available */ 1711 if (mvm->d3_test_pme_ptr) { 1712 pme_asserted = iwl_trans_read_mem32(mvm->trans, 1713 mvm->d3_test_pme_ptr); 1714 if (pme_asserted) 1715 break; 1716 } 1717 1718 if (msleep_interruptible(100)) 1719 break; 1720 } 1721 1722 return 0; 1723} 1724 1725static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac, 1726 struct ieee80211_vif *vif) 1727{ 1728 /* skip the one we keep connection on */ 1729 if (_data == vif) 1730 return; 1731 1732 if (vif->type == NL80211_IFTYPE_STATION) 1733 ieee80211_connection_loss(vif); 1734} 1735 1736static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file) 1737{ 1738 struct iwl_mvm *mvm = inode->i_private; 1739 int remaining_time = 10; 1740 1741 mvm->d3_test_active = false; 1742 __iwl_mvm_resume(mvm, true); 1743 iwl_abort_notification_waits(&mvm->notif_wait); 1744 ieee80211_restart_hw(mvm->hw); 1745 1746 /* wait for restart and disconnect all interfaces */ 1747 while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 1748 remaining_time > 0) { 1749 remaining_time--; 1750 msleep(1000); 1751 } 1752 1753 if (remaining_time == 0) 1754 IWL_ERR(mvm, "Timed out waiting for HW restart to finish!\n"); 1755 1756 ieee80211_iterate_active_interfaces_atomic( 1757 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1758 iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif); 1759 1760 ieee80211_wake_queues(mvm->hw); 1761 1762 return 0; 1763} 1764 1765const struct file_operations iwl_dbgfs_d3_test_ops = { 1766 .llseek = no_llseek, 1767 .open = iwl_mvm_d3_test_open, 1768 .read = iwl_mvm_d3_test_read, 1769 .release = iwl_mvm_d3_test_release, 1770}; 1771#endif 1772