1/****************************************************************************** 2 * 3 * This file is provided under a dual BSD/GPLv2 license. When using or 4 * redistributing this file, you may do so under either license. 5 * 6 * GPL LICENSE SUMMARY 7 * 8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of version 2 of the GNU General Public License as 13 * published by the Free Software Foundation. 14 * 15 * This program is distributed in the hope that it will be useful, but 16 * WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 18 * General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, 23 * USA 24 * 25 * The full GNU General Public License is included in this distribution 26 * in the file called COPYING. 27 * 28 * Contact Information: 29 * Intel Linux Wireless <ilw@linux.intel.com> 30 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 31 * 32 * BSD LICENSE 33 * 34 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 35 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH 36 * All rights reserved. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 42 * * Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * * Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in 46 * the documentation and/or other materials provided with the 47 * distribution. 48 * * Neither the name Intel Corporation nor the names of its 49 * contributors may be used to endorse or promote products derived 50 * from this software without specific prior written permission. 51 * 52 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 53 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 54 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 55 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 56 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 57 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 58 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 59 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 60 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 61 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 62 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 63 * 64 *****************************************************************************/ 65 66#include <linux/etherdevice.h> 67#include <linux/ip.h> 68#include <linux/fs.h> 69#include <net/cfg80211.h> 70#include <net/ipv6.h> 71#include <net/tcp.h> 72#include <net/addrconf.h> 73#include "iwl-modparams.h" 74#include "fw-api.h" 75#include "mvm.h" 76 77void iwl_mvm_set_rekey_data(struct ieee80211_hw *hw, 78 struct ieee80211_vif *vif, 79 struct cfg80211_gtk_rekey_data *data) 80{ 81 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 82 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 83 84 if (iwlwifi_mod_params.sw_crypto) 85 return; 86 87 mutex_lock(&mvm->mutex); 88 89 memcpy(mvmvif->rekey_data.kek, data->kek, NL80211_KEK_LEN); 90 memcpy(mvmvif->rekey_data.kck, data->kck, NL80211_KCK_LEN); 91 mvmvif->rekey_data.replay_ctr = 92 cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr)); 93 mvmvif->rekey_data.valid = true; 94 95 mutex_unlock(&mvm->mutex); 96} 97 98#if IS_ENABLED(CONFIG_IPV6) 99void iwl_mvm_ipv6_addr_change(struct ieee80211_hw *hw, 100 struct ieee80211_vif *vif, 101 struct inet6_dev *idev) 102{ 103 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 104 struct inet6_ifaddr *ifa; 105 int idx = 0; 106 107 read_lock_bh(&idev->lock); 108 list_for_each_entry(ifa, &idev->addr_list, if_list) { 109 mvmvif->target_ipv6_addrs[idx] = ifa->addr; 110 idx++; 111 if (idx >= IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_MAX) 112 break; 113 } 114 read_unlock_bh(&idev->lock); 115 116 mvmvif->num_target_ipv6_addrs = idx; 117} 118#endif 119 120void iwl_mvm_set_default_unicast_key(struct ieee80211_hw *hw, 121 struct ieee80211_vif *vif, int idx) 122{ 123 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 124 125 mvmvif->tx_key_idx = idx; 126} 127 128static void iwl_mvm_convert_p1k(u16 *p1k, __le16 *out) 129{ 130 int i; 131 132 for (i = 0; i < IWL_P1K_SIZE; i++) 133 out[i] = cpu_to_le16(p1k[i]); 134} 135 136struct wowlan_key_data { 137 struct iwl_wowlan_rsc_tsc_params_cmd *rsc_tsc; 138 struct iwl_wowlan_tkip_params_cmd *tkip; 139 bool error, use_rsc_tsc, use_tkip; 140 int wep_key_idx; 141}; 142 143static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw, 144 struct ieee80211_vif *vif, 145 struct ieee80211_sta *sta, 146 struct ieee80211_key_conf *key, 147 void *_data) 148{ 149 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 150 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 151 struct wowlan_key_data *data = _data; 152 struct aes_sc *aes_sc, *aes_tx_sc = NULL; 153 struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL; 154 struct iwl_p1k_cache *rx_p1ks; 155 u8 *rx_mic_key; 156 struct ieee80211_key_seq seq; 157 u32 cur_rx_iv32 = 0; 158 u16 p1k[IWL_P1K_SIZE]; 159 int ret, i; 160 161 mutex_lock(&mvm->mutex); 162 163 switch (key->cipher) { 164 case WLAN_CIPHER_SUITE_WEP40: 165 case WLAN_CIPHER_SUITE_WEP104: { /* hack it for now */ 166 struct { 167 struct iwl_mvm_wep_key_cmd wep_key_cmd; 168 struct iwl_mvm_wep_key wep_key; 169 } __packed wkc = { 170 .wep_key_cmd.mac_id_n_color = 171 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 172 mvmvif->color)), 173 .wep_key_cmd.num_keys = 1, 174 /* firmware sets STA_KEY_FLG_WEP_13BYTES */ 175 .wep_key_cmd.decryption_type = STA_KEY_FLG_WEP, 176 .wep_key.key_index = key->keyidx, 177 .wep_key.key_size = key->keylen, 178 }; 179 180 /* 181 * This will fail -- the key functions don't set support 182 * pairwise WEP keys. However, that's better than silently 183 * failing WoWLAN. Or maybe not? 184 */ 185 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) 186 break; 187 188 memcpy(&wkc.wep_key.key[3], key->key, key->keylen); 189 if (key->keyidx == mvmvif->tx_key_idx) { 190 /* TX key must be at offset 0 */ 191 wkc.wep_key.key_offset = 0; 192 } else { 193 /* others start at 1 */ 194 data->wep_key_idx++; 195 wkc.wep_key.key_offset = data->wep_key_idx; 196 } 197 198 ret = iwl_mvm_send_cmd_pdu(mvm, WEP_KEY, 0, sizeof(wkc), &wkc); 199 data->error = ret != 0; 200 201 mvm->ptk_ivlen = key->iv_len; 202 mvm->ptk_icvlen = key->icv_len; 203 mvm->gtk_ivlen = key->iv_len; 204 mvm->gtk_icvlen = key->icv_len; 205 206 /* don't upload key again */ 207 goto out_unlock; 208 } 209 default: 210 data->error = true; 211 goto out_unlock; 212 case WLAN_CIPHER_SUITE_AES_CMAC: 213 /* 214 * Ignore CMAC keys -- the WoWLAN firmware doesn't support them 215 * but we also shouldn't abort suspend due to that. It does have 216 * support for the IGTK key renewal, but doesn't really use the 217 * IGTK for anything. This means we could spuriously wake up or 218 * be deauthenticated, but that was considered acceptable. 219 */ 220 goto out_unlock; 221 case WLAN_CIPHER_SUITE_TKIP: 222 if (sta) { 223 tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc; 224 tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc; 225 226 rx_p1ks = data->tkip->rx_uni; 227 228 ieee80211_get_key_tx_seq(key, &seq); 229 tkip_tx_sc->iv16 = cpu_to_le16(seq.tkip.iv16); 230 tkip_tx_sc->iv32 = cpu_to_le32(seq.tkip.iv32); 231 232 ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k); 233 iwl_mvm_convert_p1k(p1k, data->tkip->tx.p1k); 234 235 memcpy(data->tkip->mic_keys.tx, 236 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], 237 IWL_MIC_KEY_SIZE); 238 239 rx_mic_key = data->tkip->mic_keys.rx_unicast; 240 } else { 241 tkip_sc = 242 data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc; 243 rx_p1ks = data->tkip->rx_multi; 244 rx_mic_key = data->tkip->mic_keys.rx_mcast; 245 } 246 247 /* 248 * For non-QoS this relies on the fact that both the uCode and 249 * mac80211 use TID 0 (as they need to to avoid replay attacks) 250 * for checking the IV in the frames. 251 */ 252 for (i = 0; i < IWL_NUM_RSC; i++) { 253 ieee80211_get_key_rx_seq(key, i, &seq); 254 tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16); 255 tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32); 256 /* wrapping isn't allowed, AP must rekey */ 257 if (seq.tkip.iv32 > cur_rx_iv32) 258 cur_rx_iv32 = seq.tkip.iv32; 259 } 260 261 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid, 262 cur_rx_iv32, p1k); 263 iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k); 264 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid, 265 cur_rx_iv32 + 1, p1k); 266 iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k); 267 268 memcpy(rx_mic_key, 269 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], 270 IWL_MIC_KEY_SIZE); 271 272 data->use_tkip = true; 273 data->use_rsc_tsc = true; 274 break; 275 case WLAN_CIPHER_SUITE_CCMP: 276 if (sta) { 277 u8 *pn = seq.ccmp.pn; 278 279 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc; 280 aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc; 281 282 ieee80211_get_key_tx_seq(key, &seq); 283 aes_tx_sc->pn = cpu_to_le64((u64)pn[5] | 284 ((u64)pn[4] << 8) | 285 ((u64)pn[3] << 16) | 286 ((u64)pn[2] << 24) | 287 ((u64)pn[1] << 32) | 288 ((u64)pn[0] << 40)); 289 } else { 290 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc; 291 } 292 293 /* 294 * For non-QoS this relies on the fact that both the uCode and 295 * mac80211 use TID 0 for checking the IV in the frames. 296 */ 297 for (i = 0; i < IWL_NUM_RSC; i++) { 298 u8 *pn = seq.ccmp.pn; 299 300 ieee80211_get_key_rx_seq(key, i, &seq); 301 aes_sc->pn = cpu_to_le64((u64)pn[5] | 302 ((u64)pn[4] << 8) | 303 ((u64)pn[3] << 16) | 304 ((u64)pn[2] << 24) | 305 ((u64)pn[1] << 32) | 306 ((u64)pn[0] << 40)); 307 } 308 data->use_rsc_tsc = true; 309 break; 310 } 311 312 /* 313 * The D3 firmware hardcodes the key offset 0 as the key it uses 314 * to transmit packets to the AP, i.e. the PTK. 315 */ 316 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) { 317 key->hw_key_idx = 0; 318 mvm->ptk_ivlen = key->iv_len; 319 mvm->ptk_icvlen = key->icv_len; 320 } else { 321 /* 322 * firmware only supports TSC/RSC for a single key, 323 * so if there are multiple keep overwriting them 324 * with new ones -- this relies on mac80211 doing 325 * list_add_tail(). 326 */ 327 key->hw_key_idx = 1; 328 mvm->gtk_ivlen = key->iv_len; 329 mvm->gtk_icvlen = key->icv_len; 330 } 331 332 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, true); 333 data->error = ret != 0; 334out_unlock: 335 mutex_unlock(&mvm->mutex); 336} 337 338static int iwl_mvm_send_patterns(struct iwl_mvm *mvm, 339 struct cfg80211_wowlan *wowlan) 340{ 341 struct iwl_wowlan_patterns_cmd *pattern_cmd; 342 struct iwl_host_cmd cmd = { 343 .id = WOWLAN_PATTERNS, 344 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 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 }; 522 int ret; 523 524 if (!tcp) 525 return 0; 526 527 cfg = kzalloc(sizeof(*cfg), GFP_KERNEL); 528 if (!cfg) 529 return -ENOMEM; 530 cmd.data[0] = cfg; 531 532 cfg->max_syn_retries = 10; 533 cfg->max_data_retries = 10; 534 cfg->tcp_syn_ack_timeout = 1; /* seconds */ 535 cfg->tcp_ack_timeout = 1; /* seconds */ 536 537 /* SYN (TX) */ 538 iwl_mvm_build_tcp_packet( 539 vif, tcp, cfg->syn_tx.data, NULL, 540 &cfg->syn_tx.info.tcp_pseudo_header_checksum, 541 MVM_TCP_TX_SYN); 542 cfg->syn_tx.info.tcp_payload_length = 0; 543 544 /* SYN/ACK (RX) */ 545 iwl_mvm_build_tcp_packet( 546 vif, tcp, cfg->synack_rx.data, cfg->synack_rx.rx_mask, 547 &cfg->synack_rx.info.tcp_pseudo_header_checksum, 548 MVM_TCP_RX_SYNACK); 549 cfg->synack_rx.info.tcp_payload_length = 0; 550 551 /* KEEPALIVE/ACK (TX) */ 552 iwl_mvm_build_tcp_packet( 553 vif, tcp, cfg->keepalive_tx.data, NULL, 554 &cfg->keepalive_tx.info.tcp_pseudo_header_checksum, 555 MVM_TCP_TX_DATA); 556 cfg->keepalive_tx.info.tcp_payload_length = 557 cpu_to_le16(tcp->payload_len); 558 cfg->sequence_number_offset = tcp->payload_seq.offset; 559 /* length must be 0..4, the field is little endian */ 560 cfg->sequence_number_length = tcp->payload_seq.len; 561 cfg->initial_sequence_number = cpu_to_le32(tcp->payload_seq.start); 562 cfg->keepalive_interval = cpu_to_le16(tcp->data_interval); 563 if (tcp->payload_tok.len) { 564 cfg->token_offset = tcp->payload_tok.offset; 565 cfg->token_length = tcp->payload_tok.len; 566 cfg->num_tokens = 567 cpu_to_le16(tcp->tokens_size % tcp->payload_tok.len); 568 memcpy(cfg->tokens, tcp->payload_tok.token_stream, 569 tcp->tokens_size); 570 } else { 571 /* set tokens to max value to almost never run out */ 572 cfg->num_tokens = cpu_to_le16(65535); 573 } 574 575 /* ACK (RX) */ 576 iwl_mvm_build_tcp_packet( 577 vif, tcp, cfg->keepalive_ack_rx.data, 578 cfg->keepalive_ack_rx.rx_mask, 579 &cfg->keepalive_ack_rx.info.tcp_pseudo_header_checksum, 580 MVM_TCP_RX_ACK); 581 cfg->keepalive_ack_rx.info.tcp_payload_length = 0; 582 583 /* WAKEUP (RX) */ 584 iwl_mvm_build_tcp_packet( 585 vif, tcp, cfg->wake_rx.data, cfg->wake_rx.rx_mask, 586 &cfg->wake_rx.info.tcp_pseudo_header_checksum, 587 MVM_TCP_RX_WAKE); 588 cfg->wake_rx.info.tcp_payload_length = 589 cpu_to_le16(tcp->wake_len); 590 591 /* FIN */ 592 iwl_mvm_build_tcp_packet( 593 vif, tcp, cfg->fin_tx.data, NULL, 594 &cfg->fin_tx.info.tcp_pseudo_header_checksum, 595 MVM_TCP_TX_FIN); 596 cfg->fin_tx.info.tcp_payload_length = 0; 597 598 ret = iwl_mvm_send_cmd(mvm, &cmd); 599 kfree(cfg); 600 601 return ret; 602} 603 604struct iwl_d3_iter_data { 605 struct iwl_mvm *mvm; 606 struct ieee80211_vif *vif; 607 bool error; 608}; 609 610static void iwl_mvm_d3_iface_iterator(void *_data, u8 *mac, 611 struct ieee80211_vif *vif) 612{ 613 struct iwl_d3_iter_data *data = _data; 614 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 615 616 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p) 617 return; 618 619 if (mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT) 620 return; 621 622 if (data->vif) { 623 IWL_ERR(data->mvm, "More than one managed interface active!\n"); 624 data->error = true; 625 return; 626 } 627 628 data->vif = vif; 629} 630 631static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 632 struct ieee80211_sta *ap_sta) 633{ 634 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 635 struct ieee80211_chanctx_conf *ctx; 636 u8 chains_static, chains_dynamic; 637 struct cfg80211_chan_def chandef; 638 int ret, i; 639 struct iwl_binding_cmd binding_cmd = {}; 640 struct iwl_time_quota_cmd quota_cmd = {}; 641 u32 status; 642 643 /* add back the PHY */ 644 if (WARN_ON(!mvmvif->phy_ctxt)) 645 return -EINVAL; 646 647 rcu_read_lock(); 648 ctx = rcu_dereference(vif->chanctx_conf); 649 if (WARN_ON(!ctx)) { 650 rcu_read_unlock(); 651 return -EINVAL; 652 } 653 chandef = ctx->def; 654 chains_static = ctx->rx_chains_static; 655 chains_dynamic = ctx->rx_chains_dynamic; 656 rcu_read_unlock(); 657 658 ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt, &chandef, 659 chains_static, chains_dynamic); 660 if (ret) 661 return ret; 662 663 /* add back the MAC */ 664 mvmvif->uploaded = false; 665 666 if (WARN_ON(!vif->bss_conf.assoc)) 667 return -EINVAL; 668 669 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 670 if (ret) 671 return ret; 672 673 /* add back binding - XXX refactor? */ 674 binding_cmd.id_and_color = 675 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id, 676 mvmvif->phy_ctxt->color)); 677 binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD); 678 binding_cmd.phy = 679 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id, 680 mvmvif->phy_ctxt->color)); 681 binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 682 mvmvif->color)); 683 for (i = 1; i < MAX_MACS_IN_BINDING; i++) 684 binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID); 685 686 status = 0; 687 ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD, 688 sizeof(binding_cmd), &binding_cmd, 689 &status); 690 if (ret) { 691 IWL_ERR(mvm, "Failed to add binding: %d\n", ret); 692 return ret; 693 } 694 695 if (status) { 696 IWL_ERR(mvm, "Binding command failed: %u\n", status); 697 return -EIO; 698 } 699 700 ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false); 701 if (ret) 702 return ret; 703 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], ap_sta); 704 705 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 706 if (ret) 707 return ret; 708 709 /* and some quota */ 710 quota_cmd.quotas[0].id_and_color = 711 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id, 712 mvmvif->phy_ctxt->color)); 713 quota_cmd.quotas[0].quota = cpu_to_le32(IWL_MVM_MAX_QUOTA); 714 quota_cmd.quotas[0].max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA); 715 716 for (i = 1; i < MAX_BINDINGS; i++) 717 quota_cmd.quotas[i].id_and_color = cpu_to_le32(FW_CTXT_INVALID); 718 719 ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0, 720 sizeof(quota_cmd), "a_cmd); 721 if (ret) 722 IWL_ERR(mvm, "Failed to send quota: %d\n", ret); 723 724 return 0; 725} 726 727static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm, 728 struct ieee80211_vif *vif) 729{ 730 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 731 struct iwl_nonqos_seq_query_cmd query_cmd = { 732 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET), 733 .mac_id_n_color = 734 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 735 mvmvif->color)), 736 }; 737 struct iwl_host_cmd cmd = { 738 .id = NON_QOS_TX_COUNTER_CMD, 739 .flags = CMD_WANT_SKB, 740 }; 741 int err; 742 u32 size; 743 744 cmd.data[0] = &query_cmd; 745 cmd.len[0] = sizeof(query_cmd); 746 747 err = iwl_mvm_send_cmd(mvm, &cmd); 748 if (err) 749 return err; 750 751 size = iwl_rx_packet_payload_len(cmd.resp_pkt); 752 if (size < sizeof(__le16)) { 753 err = -EINVAL; 754 } else { 755 err = le16_to_cpup((__le16 *)cmd.resp_pkt->data); 756 /* firmware returns next, not last-used seqno */ 757 err = (u16) (err - 0x10); 758 } 759 760 iwl_free_resp(&cmd); 761 return err; 762} 763 764void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 765{ 766 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 767 struct iwl_nonqos_seq_query_cmd query_cmd = { 768 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET), 769 .mac_id_n_color = 770 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 771 mvmvif->color)), 772 .value = cpu_to_le16(mvmvif->seqno), 773 }; 774 775 /* return if called during restart, not resume from D3 */ 776 if (!mvmvif->seqno_valid) 777 return; 778 779 mvmvif->seqno_valid = false; 780 781 if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0, 782 sizeof(query_cmd), &query_cmd)) 783 IWL_ERR(mvm, "failed to set non-QoS seqno\n"); 784} 785 786static int 787iwl_mvm_send_wowlan_config_cmd(struct iwl_mvm *mvm, 788 const struct iwl_wowlan_config_cmd_v3 *cmd) 789{ 790 /* start only with the v2 part of the command */ 791 u16 cmd_len = sizeof(cmd->common); 792 793 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_WOWLAN_CONFIG_TID) 794 cmd_len = sizeof(*cmd); 795 796 return iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0, 797 cmd_len, cmd); 798} 799 800static int __iwl_mvm_suspend(struct ieee80211_hw *hw, 801 struct cfg80211_wowlan *wowlan, 802 bool test) 803{ 804 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 805 struct iwl_d3_iter_data suspend_iter_data = { 806 .mvm = mvm, 807 }; 808 struct ieee80211_vif *vif; 809 struct iwl_mvm_vif *mvmvif; 810 struct ieee80211_sta *ap_sta; 811 struct iwl_mvm_sta *mvm_ap_sta; 812 struct iwl_wowlan_config_cmd_v3 wowlan_config_cmd = {}; 813 struct iwl_wowlan_kek_kck_material_cmd kek_kck_cmd = {}; 814 struct iwl_wowlan_tkip_params_cmd tkip_cmd = {}; 815 struct iwl_d3_manager_config d3_cfg_cmd_data = { 816 /* 817 * Program the minimum sleep time to 10 seconds, as many 818 * platforms have issues processing a wakeup signal while 819 * still being in the process of suspending. 820 */ 821 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000), 822 }; 823 struct iwl_host_cmd d3_cfg_cmd = { 824 .id = D3_CONFIG_CMD, 825 .flags = CMD_WANT_SKB, 826 .data[0] = &d3_cfg_cmd_data, 827 .len[0] = sizeof(d3_cfg_cmd_data), 828 }; 829 struct wowlan_key_data key_data = { 830 .use_rsc_tsc = false, 831 .tkip = &tkip_cmd, 832 .use_tkip = false, 833 }; 834 int ret; 835 int len __maybe_unused; 836 837 if (!wowlan) { 838 /* 839 * mac80211 shouldn't get here, but for D3 test 840 * it doesn't warrant a warning 841 */ 842 WARN_ON(!test); 843 return -EINVAL; 844 } 845 846 key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL); 847 if (!key_data.rsc_tsc) 848 return -ENOMEM; 849 850 mutex_lock(&mvm->mutex); 851 852 /* see if there's only a single BSS vif and it's associated */ 853 ieee80211_iterate_active_interfaces_atomic( 854 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 855 iwl_mvm_d3_iface_iterator, &suspend_iter_data); 856 857 if (suspend_iter_data.error || !suspend_iter_data.vif) { 858 ret = 1; 859 goto out_noreset; 860 } 861 862 vif = suspend_iter_data.vif; 863 mvmvif = iwl_mvm_vif_from_mac80211(vif); 864 865 ap_sta = rcu_dereference_protected( 866 mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], 867 lockdep_is_held(&mvm->mutex)); 868 if (IS_ERR_OR_NULL(ap_sta)) { 869 ret = -EINVAL; 870 goto out_noreset; 871 } 872 873 mvm_ap_sta = (struct iwl_mvm_sta *)ap_sta->drv_priv; 874 875 /* TODO: wowlan_config_cmd.common.wowlan_ba_teardown_tids */ 876 877 wowlan_config_cmd.common.is_11n_connection = 878 ap_sta->ht_cap.ht_supported; 879 880 /* Query the last used seqno and set it */ 881 ret = iwl_mvm_get_last_nonqos_seq(mvm, vif); 882 if (ret < 0) 883 goto out_noreset; 884 wowlan_config_cmd.common.non_qos_seq = cpu_to_le16(ret); 885 886 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, &wowlan_config_cmd.common); 887 888 if (wowlan->disconnect) 889 wowlan_config_cmd.common.wakeup_filter |= 890 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS | 891 IWL_WOWLAN_WAKEUP_LINK_CHANGE); 892 if (wowlan->magic_pkt) 893 wowlan_config_cmd.common.wakeup_filter |= 894 cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET); 895 if (wowlan->gtk_rekey_failure) 896 wowlan_config_cmd.common.wakeup_filter |= 897 cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL); 898 if (wowlan->eap_identity_req) 899 wowlan_config_cmd.common.wakeup_filter |= 900 cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ); 901 if (wowlan->four_way_handshake) 902 wowlan_config_cmd.common.wakeup_filter |= 903 cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE); 904 if (wowlan->n_patterns) 905 wowlan_config_cmd.common.wakeup_filter |= 906 cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH); 907 908 if (wowlan->rfkill_release) 909 wowlan_config_cmd.common.wakeup_filter |= 910 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT); 911 912 if (wowlan->tcp) { 913 /* 914 * Set the "link change" (really "link lost") flag as well 915 * since that implies losing the TCP connection. 916 */ 917 wowlan_config_cmd.common.wakeup_filter |= 918 cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS | 919 IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE | 920 IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET | 921 IWL_WOWLAN_WAKEUP_LINK_CHANGE); 922 } 923 924 iwl_mvm_cancel_scan(mvm); 925 926 iwl_trans_stop_device(mvm->trans); 927 928 /* 929 * Set the HW restart bit -- this is mostly true as we're 930 * going to load new firmware and reprogram that, though 931 * the reprogramming is going to be manual to avoid adding 932 * all the MACs that aren't support. 933 * We don't have to clear up everything though because the 934 * reprogramming is manual. When we resume, we'll actually 935 * go through a proper restart sequence again to switch 936 * back to the runtime firmware image. 937 */ 938 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 939 940 /* We reprogram keys and shouldn't allocate new key indices */ 941 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); 942 943 mvm->ptk_ivlen = 0; 944 mvm->ptk_icvlen = 0; 945 mvm->ptk_ivlen = 0; 946 mvm->ptk_icvlen = 0; 947 948 ret = iwl_mvm_load_d3_fw(mvm); 949 if (ret) 950 goto out; 951 952 ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta); 953 if (ret) 954 goto out; 955 956 if (!iwlwifi_mod_params.sw_crypto) { 957 /* 958 * This needs to be unlocked due to lock ordering 959 * constraints. Since we're in the suspend path 960 * that isn't really a problem though. 961 */ 962 mutex_unlock(&mvm->mutex); 963 ieee80211_iter_keys(mvm->hw, vif, 964 iwl_mvm_wowlan_program_keys, 965 &key_data); 966 mutex_lock(&mvm->mutex); 967 if (key_data.error) { 968 ret = -EIO; 969 goto out; 970 } 971 972 if (key_data.use_rsc_tsc) { 973 struct iwl_host_cmd rsc_tsc_cmd = { 974 .id = WOWLAN_TSC_RSC_PARAM, 975 .data[0] = key_data.rsc_tsc, 976 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 977 .len[0] = sizeof(*key_data.rsc_tsc), 978 }; 979 980 ret = iwl_mvm_send_cmd(mvm, &rsc_tsc_cmd); 981 if (ret) 982 goto out; 983 } 984 985 if (key_data.use_tkip) { 986 ret = iwl_mvm_send_cmd_pdu(mvm, 987 WOWLAN_TKIP_PARAM, 988 0, sizeof(tkip_cmd), 989 &tkip_cmd); 990 if (ret) 991 goto out; 992 } 993 994 if (mvmvif->rekey_data.valid) { 995 memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd)); 996 memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck, 997 NL80211_KCK_LEN); 998 kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN); 999 memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek, 1000 NL80211_KEK_LEN); 1001 kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN); 1002 kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr; 1003 1004 ret = iwl_mvm_send_cmd_pdu(mvm, 1005 WOWLAN_KEK_KCK_MATERIAL, 0, 1006 sizeof(kek_kck_cmd), 1007 &kek_kck_cmd); 1008 if (ret) 1009 goto out; 1010 } 1011 } 1012 1013 ret = iwl_mvm_send_wowlan_config_cmd(mvm, &wowlan_config_cmd); 1014 if (ret) 1015 goto out; 1016 1017 ret = iwl_mvm_send_patterns(mvm, wowlan); 1018 if (ret) 1019 goto out; 1020 1021 ret = iwl_mvm_send_proto_offload(mvm, vif, false, 0); 1022 if (ret) 1023 goto out; 1024 1025 ret = iwl_mvm_send_remote_wake_cfg(mvm, vif, wowlan->tcp); 1026 if (ret) 1027 goto out; 1028 1029 ret = iwl_mvm_power_update_device(mvm); 1030 if (ret) 1031 goto out; 1032 1033 ret = iwl_mvm_power_update_mac(mvm); 1034 if (ret) 1035 goto out; 1036 1037#ifdef CONFIG_IWLWIFI_DEBUGFS 1038 if (mvm->d3_wake_sysassert) 1039 d3_cfg_cmd_data.wakeup_flags |= 1040 cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR); 1041#endif 1042 1043 /* must be last -- this switches firmware state */ 1044 ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd); 1045 if (ret) 1046 goto out; 1047#ifdef CONFIG_IWLWIFI_DEBUGFS 1048 len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt); 1049 if (len >= sizeof(u32)) { 1050 mvm->d3_test_pme_ptr = 1051 le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data); 1052 } 1053#endif 1054 iwl_free_resp(&d3_cfg_cmd); 1055 1056 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1057 1058 iwl_trans_d3_suspend(mvm->trans, test); 1059 out: 1060 if (ret < 0) 1061 ieee80211_restart_hw(mvm->hw); 1062 out_noreset: 1063 kfree(key_data.rsc_tsc); 1064 1065 mutex_unlock(&mvm->mutex); 1066 1067 return ret; 1068} 1069 1070int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) 1071{ 1072 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1073 1074 if (iwl_mvm_is_d0i3_supported(mvm)) { 1075 mutex_lock(&mvm->d0i3_suspend_mutex); 1076 __set_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags); 1077 mutex_unlock(&mvm->d0i3_suspend_mutex); 1078 return 0; 1079 } 1080 1081 return __iwl_mvm_suspend(hw, wowlan, false); 1082} 1083 1084/* converted data from the different status responses */ 1085struct iwl_wowlan_status_data { 1086 u16 pattern_number; 1087 u16 qos_seq_ctr[8]; 1088 u32 wakeup_reasons; 1089 u32 wake_packet_length; 1090 u32 wake_packet_bufsize; 1091 const u8 *wake_packet; 1092}; 1093 1094static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm, 1095 struct ieee80211_vif *vif, 1096 struct iwl_wowlan_status_data *status) 1097{ 1098 struct sk_buff *pkt = NULL; 1099 struct cfg80211_wowlan_wakeup wakeup = { 1100 .pattern_idx = -1, 1101 }; 1102 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; 1103 u32 reasons = status->wakeup_reasons; 1104 1105 if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) { 1106 wakeup_report = NULL; 1107 goto report; 1108 } 1109 1110 if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET) 1111 wakeup.magic_pkt = true; 1112 1113 if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN) 1114 wakeup.pattern_idx = 1115 status->pattern_number; 1116 1117 if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 1118 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)) 1119 wakeup.disconnect = true; 1120 1121 if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE) 1122 wakeup.gtk_rekey_failure = true; 1123 1124 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 1125 wakeup.rfkill_release = true; 1126 1127 if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST) 1128 wakeup.eap_identity_req = true; 1129 1130 if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE) 1131 wakeup.four_way_handshake = true; 1132 1133 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS) 1134 wakeup.tcp_connlost = true; 1135 1136 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE) 1137 wakeup.tcp_nomoretokens = true; 1138 1139 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET) 1140 wakeup.tcp_match = true; 1141 1142 if (status->wake_packet_bufsize) { 1143 int pktsize = status->wake_packet_bufsize; 1144 int pktlen = status->wake_packet_length; 1145 const u8 *pktdata = status->wake_packet; 1146 struct ieee80211_hdr *hdr = (void *)pktdata; 1147 int truncated = pktlen - pktsize; 1148 1149 /* this would be a firmware bug */ 1150 if (WARN_ON_ONCE(truncated < 0)) 1151 truncated = 0; 1152 1153 if (ieee80211_is_data(hdr->frame_control)) { 1154 int hdrlen = ieee80211_hdrlen(hdr->frame_control); 1155 int ivlen = 0, icvlen = 4; /* also FCS */ 1156 1157 pkt = alloc_skb(pktsize, GFP_KERNEL); 1158 if (!pkt) 1159 goto report; 1160 1161 memcpy(skb_put(pkt, hdrlen), pktdata, hdrlen); 1162 pktdata += hdrlen; 1163 pktsize -= hdrlen; 1164 1165 if (ieee80211_has_protected(hdr->frame_control)) { 1166 /* 1167 * This is unlocked and using gtk_i(c)vlen, 1168 * but since everything is under RTNL still 1169 * that's not really a problem - changing 1170 * it would be difficult. 1171 */ 1172 if (is_multicast_ether_addr(hdr->addr1)) { 1173 ivlen = mvm->gtk_ivlen; 1174 icvlen += mvm->gtk_icvlen; 1175 } else { 1176 ivlen = mvm->ptk_ivlen; 1177 icvlen += mvm->ptk_icvlen; 1178 } 1179 } 1180 1181 /* if truncated, FCS/ICV is (partially) gone */ 1182 if (truncated >= icvlen) { 1183 icvlen = 0; 1184 truncated -= icvlen; 1185 } else { 1186 icvlen -= truncated; 1187 truncated = 0; 1188 } 1189 1190 pktsize -= ivlen + icvlen; 1191 pktdata += ivlen; 1192 1193 memcpy(skb_put(pkt, pktsize), pktdata, pktsize); 1194 1195 if (ieee80211_data_to_8023(pkt, vif->addr, vif->type)) 1196 goto report; 1197 wakeup.packet = pkt->data; 1198 wakeup.packet_present_len = pkt->len; 1199 wakeup.packet_len = pkt->len - truncated; 1200 wakeup.packet_80211 = false; 1201 } else { 1202 int fcslen = 4; 1203 1204 if (truncated >= 4) { 1205 truncated -= 4; 1206 fcslen = 0; 1207 } else { 1208 fcslen -= truncated; 1209 truncated = 0; 1210 } 1211 pktsize -= fcslen; 1212 wakeup.packet = status->wake_packet; 1213 wakeup.packet_present_len = pktsize; 1214 wakeup.packet_len = pktlen - truncated; 1215 wakeup.packet_80211 = true; 1216 } 1217 } 1218 1219 report: 1220 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); 1221 kfree_skb(pkt); 1222} 1223 1224static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc, 1225 struct ieee80211_key_seq *seq) 1226{ 1227 u64 pn; 1228 1229 pn = le64_to_cpu(sc->pn); 1230 seq->ccmp.pn[0] = pn >> 40; 1231 seq->ccmp.pn[1] = pn >> 32; 1232 seq->ccmp.pn[2] = pn >> 24; 1233 seq->ccmp.pn[3] = pn >> 16; 1234 seq->ccmp.pn[4] = pn >> 8; 1235 seq->ccmp.pn[5] = pn; 1236} 1237 1238static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc, 1239 struct ieee80211_key_seq *seq) 1240{ 1241 seq->tkip.iv32 = le32_to_cpu(sc->iv32); 1242 seq->tkip.iv16 = le16_to_cpu(sc->iv16); 1243} 1244 1245static void iwl_mvm_set_aes_rx_seq(struct aes_sc *scs, 1246 struct ieee80211_key_conf *key) 1247{ 1248 int tid; 1249 1250 BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS); 1251 1252 for (tid = 0; tid < IWL_NUM_RSC; tid++) { 1253 struct ieee80211_key_seq seq = {}; 1254 1255 iwl_mvm_aes_sc_to_seq(&scs[tid], &seq); 1256 ieee80211_set_key_rx_seq(key, tid, &seq); 1257 } 1258} 1259 1260static void iwl_mvm_set_tkip_rx_seq(struct tkip_sc *scs, 1261 struct ieee80211_key_conf *key) 1262{ 1263 int tid; 1264 1265 BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS); 1266 1267 for (tid = 0; tid < IWL_NUM_RSC; tid++) { 1268 struct ieee80211_key_seq seq = {}; 1269 1270 iwl_mvm_tkip_sc_to_seq(&scs[tid], &seq); 1271 ieee80211_set_key_rx_seq(key, tid, &seq); 1272 } 1273} 1274 1275static void iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf *key, 1276 struct iwl_wowlan_status *status) 1277{ 1278 union iwl_all_tsc_rsc *rsc = &status->gtk.rsc.all_tsc_rsc; 1279 1280 switch (key->cipher) { 1281 case WLAN_CIPHER_SUITE_CCMP: 1282 iwl_mvm_set_aes_rx_seq(rsc->aes.multicast_rsc, key); 1283 break; 1284 case WLAN_CIPHER_SUITE_TKIP: 1285 iwl_mvm_set_tkip_rx_seq(rsc->tkip.multicast_rsc, key); 1286 break; 1287 default: 1288 WARN_ON(1); 1289 } 1290} 1291 1292struct iwl_mvm_d3_gtk_iter_data { 1293 struct iwl_wowlan_status *status; 1294 void *last_gtk; 1295 u32 cipher; 1296 bool find_phase, unhandled_cipher; 1297 int num_keys; 1298}; 1299 1300static void iwl_mvm_d3_update_gtks(struct ieee80211_hw *hw, 1301 struct ieee80211_vif *vif, 1302 struct ieee80211_sta *sta, 1303 struct ieee80211_key_conf *key, 1304 void *_data) 1305{ 1306 struct iwl_mvm_d3_gtk_iter_data *data = _data; 1307 1308 if (data->unhandled_cipher) 1309 return; 1310 1311 switch (key->cipher) { 1312 case WLAN_CIPHER_SUITE_WEP40: 1313 case WLAN_CIPHER_SUITE_WEP104: 1314 /* ignore WEP completely, nothing to do */ 1315 return; 1316 case WLAN_CIPHER_SUITE_CCMP: 1317 case WLAN_CIPHER_SUITE_TKIP: 1318 /* we support these */ 1319 break; 1320 default: 1321 /* everything else (even CMAC for MFP) - disconnect from AP */ 1322 data->unhandled_cipher = true; 1323 return; 1324 } 1325 1326 data->num_keys++; 1327 1328 /* 1329 * pairwise key - update sequence counters only; 1330 * note that this assumes no TDLS sessions are active 1331 */ 1332 if (sta) { 1333 struct ieee80211_key_seq seq = {}; 1334 union iwl_all_tsc_rsc *sc = &data->status->gtk.rsc.all_tsc_rsc; 1335 1336 if (data->find_phase) 1337 return; 1338 1339 switch (key->cipher) { 1340 case WLAN_CIPHER_SUITE_CCMP: 1341 iwl_mvm_aes_sc_to_seq(&sc->aes.tsc, &seq); 1342 iwl_mvm_set_aes_rx_seq(sc->aes.unicast_rsc, key); 1343 break; 1344 case WLAN_CIPHER_SUITE_TKIP: 1345 iwl_mvm_tkip_sc_to_seq(&sc->tkip.tsc, &seq); 1346 iwl_mvm_set_tkip_rx_seq(sc->tkip.unicast_rsc, key); 1347 break; 1348 } 1349 ieee80211_set_key_tx_seq(key, &seq); 1350 1351 /* that's it for this key */ 1352 return; 1353 } 1354 1355 if (data->find_phase) { 1356 data->last_gtk = key; 1357 data->cipher = key->cipher; 1358 return; 1359 } 1360 1361 if (data->status->num_of_gtk_rekeys) 1362 ieee80211_remove_key(key); 1363 else if (data->last_gtk == key) 1364 iwl_mvm_set_key_rx_seq(key, data->status); 1365} 1366 1367static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm, 1368 struct ieee80211_vif *vif, 1369 struct iwl_wowlan_status *status) 1370{ 1371 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1372 struct iwl_mvm_d3_gtk_iter_data gtkdata = { 1373 .status = status, 1374 }; 1375 u32 disconnection_reasons = 1376 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 1377 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH; 1378 1379 if (!status || !vif->bss_conf.bssid) 1380 return false; 1381 1382 if (le32_to_cpu(status->wakeup_reasons) & disconnection_reasons) 1383 return false; 1384 1385 /* find last GTK that we used initially, if any */ 1386 gtkdata.find_phase = true; 1387 ieee80211_iter_keys(mvm->hw, vif, 1388 iwl_mvm_d3_update_gtks, >kdata); 1389 /* not trying to keep connections with MFP/unhandled ciphers */ 1390 if (gtkdata.unhandled_cipher) 1391 return false; 1392 if (!gtkdata.num_keys) 1393 goto out; 1394 if (!gtkdata.last_gtk) 1395 return false; 1396 1397 /* 1398 * invalidate all other GTKs that might still exist and update 1399 * the one that we used 1400 */ 1401 gtkdata.find_phase = false; 1402 ieee80211_iter_keys(mvm->hw, vif, 1403 iwl_mvm_d3_update_gtks, >kdata); 1404 1405 if (status->num_of_gtk_rekeys) { 1406 struct ieee80211_key_conf *key; 1407 struct { 1408 struct ieee80211_key_conf conf; 1409 u8 key[32]; 1410 } conf = { 1411 .conf.cipher = gtkdata.cipher, 1412 .conf.keyidx = status->gtk.key_index, 1413 }; 1414 1415 switch (gtkdata.cipher) { 1416 case WLAN_CIPHER_SUITE_CCMP: 1417 conf.conf.keylen = WLAN_KEY_LEN_CCMP; 1418 memcpy(conf.conf.key, status->gtk.decrypt_key, 1419 WLAN_KEY_LEN_CCMP); 1420 break; 1421 case WLAN_CIPHER_SUITE_TKIP: 1422 conf.conf.keylen = WLAN_KEY_LEN_TKIP; 1423 memcpy(conf.conf.key, status->gtk.decrypt_key, 16); 1424 /* leave TX MIC key zeroed, we don't use it anyway */ 1425 memcpy(conf.conf.key + 1426 NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 1427 status->gtk.tkip_mic_key, 8); 1428 break; 1429 } 1430 1431 key = ieee80211_gtk_rekey_add(vif, &conf.conf); 1432 if (IS_ERR(key)) 1433 return false; 1434 iwl_mvm_set_key_rx_seq(key, status); 1435 } 1436 1437 if (status->num_of_gtk_rekeys) { 1438 __be64 replay_ctr = 1439 cpu_to_be64(le64_to_cpu(status->replay_ctr)); 1440 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid, 1441 (void *)&replay_ctr, GFP_KERNEL); 1442 } 1443 1444out: 1445 mvmvif->seqno_valid = true; 1446 /* +0x10 because the set API expects next-to-use, not last-used */ 1447 mvmvif->seqno = le16_to_cpu(status->non_qos_seq_ctr) + 0x10; 1448 1449 return true; 1450} 1451 1452/* releases the MVM mutex */ 1453static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm, 1454 struct ieee80211_vif *vif) 1455{ 1456 u32 base = mvm->error_event_table; 1457 struct error_table_start { 1458 /* cf. struct iwl_error_event_table */ 1459 u32 valid; 1460 u32 error_id; 1461 } err_info; 1462 struct iwl_host_cmd cmd = { 1463 .id = WOWLAN_GET_STATUSES, 1464 .flags = CMD_WANT_SKB, 1465 }; 1466 struct iwl_wowlan_status_data status; 1467 struct iwl_wowlan_status *fw_status; 1468 int ret, len, status_size, i; 1469 bool keep; 1470 struct ieee80211_sta *ap_sta; 1471 struct iwl_mvm_sta *mvm_ap_sta; 1472 1473 iwl_trans_read_mem_bytes(mvm->trans, base, 1474 &err_info, sizeof(err_info)); 1475 1476 if (err_info.valid) { 1477 IWL_INFO(mvm, "error table is valid (%d)\n", 1478 err_info.valid); 1479 if (err_info.error_id == RF_KILL_INDICATOR_FOR_WOWLAN) { 1480 struct cfg80211_wowlan_wakeup wakeup = { 1481 .rfkill_release = true, 1482 }; 1483 ieee80211_report_wowlan_wakeup(vif, &wakeup, 1484 GFP_KERNEL); 1485 } 1486 goto out_unlock; 1487 } 1488 1489 /* only for tracing for now */ 1490 ret = iwl_mvm_send_cmd_pdu(mvm, OFFLOADS_QUERY_CMD, 0, 0, NULL); 1491 if (ret) 1492 IWL_ERR(mvm, "failed to query offload statistics (%d)\n", ret); 1493 1494 ret = iwl_mvm_send_cmd(mvm, &cmd); 1495 if (ret) { 1496 IWL_ERR(mvm, "failed to query status (%d)\n", ret); 1497 goto out_unlock; 1498 } 1499 1500 /* RF-kill already asserted again... */ 1501 if (!cmd.resp_pkt) 1502 goto out_unlock; 1503 1504 status_size = sizeof(*fw_status); 1505 1506 len = iwl_rx_packet_payload_len(cmd.resp_pkt); 1507 if (len < status_size) { 1508 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); 1509 goto out_free_resp; 1510 } 1511 1512 fw_status = (void *)cmd.resp_pkt->data; 1513 1514 status.pattern_number = le16_to_cpu(fw_status->pattern_number); 1515 for (i = 0; i < 8; i++) 1516 status.qos_seq_ctr[i] = 1517 le16_to_cpu(fw_status->qos_seq_ctr[i]); 1518 status.wakeup_reasons = le32_to_cpu(fw_status->wakeup_reasons); 1519 status.wake_packet_length = 1520 le32_to_cpu(fw_status->wake_packet_length); 1521 status.wake_packet_bufsize = 1522 le32_to_cpu(fw_status->wake_packet_bufsize); 1523 status.wake_packet = fw_status->wake_packet; 1524 1525 if (len != status_size + ALIGN(status.wake_packet_bufsize, 4)) { 1526 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); 1527 goto out_free_resp; 1528 } 1529 1530 /* still at hard-coded place 0 for D3 image */ 1531 ap_sta = rcu_dereference_protected( 1532 mvm->fw_id_to_mac_id[0], 1533 lockdep_is_held(&mvm->mutex)); 1534 if (IS_ERR_OR_NULL(ap_sta)) 1535 goto out_free_resp; 1536 1537 mvm_ap_sta = (struct iwl_mvm_sta *)ap_sta->drv_priv; 1538 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1539 u16 seq = status.qos_seq_ctr[i]; 1540 /* firmware stores last-used value, we store next value */ 1541 seq += 0x10; 1542 mvm_ap_sta->tid_data[i].seq_number = seq; 1543 } 1544 1545 /* now we have all the data we need, unlock to avoid mac80211 issues */ 1546 mutex_unlock(&mvm->mutex); 1547 1548 iwl_mvm_report_wakeup_reasons(mvm, vif, &status); 1549 1550 keep = iwl_mvm_setup_connection_keep(mvm, vif, fw_status); 1551 1552 iwl_free_resp(&cmd); 1553 return keep; 1554 1555 out_free_resp: 1556 iwl_free_resp(&cmd); 1557 out_unlock: 1558 mutex_unlock(&mvm->mutex); 1559 return false; 1560} 1561 1562static void iwl_mvm_read_d3_sram(struct iwl_mvm *mvm) 1563{ 1564#ifdef CONFIG_IWLWIFI_DEBUGFS 1565 const struct fw_img *img = &mvm->fw->img[IWL_UCODE_WOWLAN]; 1566 u32 len = img->sec[IWL_UCODE_SECTION_DATA].len; 1567 u32 offs = img->sec[IWL_UCODE_SECTION_DATA].offset; 1568 1569 if (!mvm->store_d3_resume_sram) 1570 return; 1571 1572 if (!mvm->d3_resume_sram) { 1573 mvm->d3_resume_sram = kzalloc(len, GFP_KERNEL); 1574 if (!mvm->d3_resume_sram) 1575 return; 1576 } 1577 1578 iwl_trans_read_mem_bytes(mvm->trans, offs, mvm->d3_resume_sram, len); 1579#endif 1580} 1581 1582static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac, 1583 struct ieee80211_vif *vif) 1584{ 1585 /* skip the one we keep connection on */ 1586 if (data == vif) 1587 return; 1588 1589 if (vif->type == NL80211_IFTYPE_STATION) 1590 ieee80211_resume_disconnect(vif); 1591} 1592 1593static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test) 1594{ 1595 struct iwl_d3_iter_data resume_iter_data = { 1596 .mvm = mvm, 1597 }; 1598 struct ieee80211_vif *vif = NULL; 1599 int ret; 1600 enum iwl_d3_status d3_status; 1601 bool keep = false; 1602 1603 mutex_lock(&mvm->mutex); 1604 1605 /* get the BSS vif pointer again */ 1606 ieee80211_iterate_active_interfaces_atomic( 1607 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1608 iwl_mvm_d3_iface_iterator, &resume_iter_data); 1609 1610 if (WARN_ON(resume_iter_data.error || !resume_iter_data.vif)) 1611 goto out_unlock; 1612 1613 vif = resume_iter_data.vif; 1614 1615 ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test); 1616 if (ret) 1617 goto out_unlock; 1618 1619 if (d3_status != IWL_D3_STATUS_ALIVE) { 1620 IWL_INFO(mvm, "Device was reset during suspend\n"); 1621 goto out_unlock; 1622 } 1623 1624 /* query SRAM first in case we want event logging */ 1625 iwl_mvm_read_d3_sram(mvm); 1626 1627 keep = iwl_mvm_query_wakeup_reasons(mvm, vif); 1628#ifdef CONFIG_IWLWIFI_DEBUGFS 1629 if (keep) 1630 mvm->keep_vif = vif; 1631#endif 1632 /* has unlocked the mutex, so skip that */ 1633 goto out; 1634 1635 out_unlock: 1636 mutex_unlock(&mvm->mutex); 1637 1638 out: 1639 if (!test) 1640 ieee80211_iterate_active_interfaces_rtnl(mvm->hw, 1641 IEEE80211_IFACE_ITER_NORMAL, 1642 iwl_mvm_d3_disconnect_iter, keep ? vif : NULL); 1643 1644 /* return 1 to reconfigure the device */ 1645 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1646 return 1; 1647} 1648 1649int iwl_mvm_resume(struct ieee80211_hw *hw) 1650{ 1651 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1652 1653 if (iwl_mvm_is_d0i3_supported(mvm)) { 1654 bool exit_now; 1655 1656 mutex_lock(&mvm->d0i3_suspend_mutex); 1657 __clear_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags); 1658 exit_now = __test_and_clear_bit(D0I3_PENDING_WAKEUP, 1659 &mvm->d0i3_suspend_flags); 1660 mutex_unlock(&mvm->d0i3_suspend_mutex); 1661 if (exit_now) 1662 _iwl_mvm_exit_d0i3(mvm); 1663 return 0; 1664 } 1665 1666 return __iwl_mvm_resume(mvm, false); 1667} 1668 1669void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled) 1670{ 1671 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1672 1673 device_set_wakeup_enable(mvm->trans->dev, enabled); 1674} 1675 1676#ifdef CONFIG_IWLWIFI_DEBUGFS 1677static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file) 1678{ 1679 struct iwl_mvm *mvm = inode->i_private; 1680 int err; 1681 1682 if (mvm->d3_test_active) 1683 return -EBUSY; 1684 1685 file->private_data = inode->i_private; 1686 1687 ieee80211_stop_queues(mvm->hw); 1688 synchronize_net(); 1689 1690 /* start pseudo D3 */ 1691 rtnl_lock(); 1692 err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true); 1693 rtnl_unlock(); 1694 if (err > 0) 1695 err = -EINVAL; 1696 if (err) { 1697 ieee80211_wake_queues(mvm->hw); 1698 return err; 1699 } 1700 mvm->d3_test_active = true; 1701 mvm->keep_vif = NULL; 1702 return 0; 1703} 1704 1705static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf, 1706 size_t count, loff_t *ppos) 1707{ 1708 struct iwl_mvm *mvm = file->private_data; 1709 u32 pme_asserted; 1710 1711 while (true) { 1712 /* read pme_ptr if available */ 1713 if (mvm->d3_test_pme_ptr) { 1714 pme_asserted = iwl_trans_read_mem32(mvm->trans, 1715 mvm->d3_test_pme_ptr); 1716 if (pme_asserted) 1717 break; 1718 } 1719 1720 if (msleep_interruptible(100)) 1721 break; 1722 } 1723 1724 return 0; 1725} 1726 1727static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac, 1728 struct ieee80211_vif *vif) 1729{ 1730 /* skip the one we keep connection on */ 1731 if (_data == vif) 1732 return; 1733 1734 if (vif->type == NL80211_IFTYPE_STATION) 1735 ieee80211_connection_loss(vif); 1736} 1737 1738static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file) 1739{ 1740 struct iwl_mvm *mvm = inode->i_private; 1741 int remaining_time = 10; 1742 1743 mvm->d3_test_active = false; 1744 __iwl_mvm_resume(mvm, true); 1745 iwl_abort_notification_waits(&mvm->notif_wait); 1746 ieee80211_restart_hw(mvm->hw); 1747 1748 /* wait for restart and disconnect all interfaces */ 1749 while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 1750 remaining_time > 0) { 1751 remaining_time--; 1752 msleep(1000); 1753 } 1754 1755 if (remaining_time == 0) 1756 IWL_ERR(mvm, "Timed out waiting for HW restart to finish!\n"); 1757 1758 ieee80211_iterate_active_interfaces_atomic( 1759 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1760 iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif); 1761 1762 ieee80211_wake_queues(mvm->hw); 1763 1764 return 0; 1765} 1766 1767const struct file_operations iwl_dbgfs_d3_test_ops = { 1768 .llseek = no_llseek, 1769 .open = iwl_mvm_d3_test_open, 1770 .read = iwl_mvm_d3_test_read, 1771 .release = iwl_mvm_d3_test_release, 1772}; 1773#endif 1774