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 - 2015 Intel Mobile Communications GmbH 10 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH 11 * 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of version 2 of the GNU General Public License as 14 * published by the Free Software Foundation. 15 * 16 * This program is distributed in the hope that it will be useful, but 17 * WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 19 * General Public License for more details. 20 * 21 * You should have received a copy of the GNU General Public License 22 * along with this program; if not, write to the Free Software 23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, 24 * USA 25 * 26 * The full GNU General Public License is included in this distribution 27 * in the file called COPYING. 28 * 29 * Contact Information: 30 * Intel Linux Wireless <linuxwifi@intel.com> 31 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 32 * 33 * BSD LICENSE 34 * 35 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 36 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 37 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH 38 * All rights reserved. 39 * 40 * Redistribution and use in source and binary forms, with or without 41 * modification, are permitted provided that the following conditions 42 * are met: 43 * 44 * * Redistributions of source code must retain the above copyright 45 * notice, this list of conditions and the following disclaimer. 46 * * Redistributions in binary form must reproduce the above copyright 47 * notice, this list of conditions and the following disclaimer in 48 * the documentation and/or other materials provided with the 49 * distribution. 50 * * Neither the name Intel Corporation nor the names of its 51 * contributors may be used to endorse or promote products derived 52 * from this software without specific prior written permission. 53 * 54 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 55 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 56 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 57 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 58 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 59 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 60 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 61 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 62 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 63 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 64 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 65 * 66 *****************************************************************************/ 67 68 #include <linux/etherdevice.h> 69 #include <linux/ip.h> 70 #include <linux/fs.h> 71 #include <net/cfg80211.h> 72 #include <net/ipv6.h> 73 #include <net/tcp.h> 74 #include <net/addrconf.h> 75 #include "iwl-modparams.h" 76 #include "fw-api.h" 77 #include "mvm.h" 78 79 void iwl_mvm_set_rekey_data(struct ieee80211_hw *hw, 80 struct ieee80211_vif *vif, 81 struct cfg80211_gtk_rekey_data *data) 82 { 83 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 84 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 85 86 if (iwlwifi_mod_params.swcrypto) 87 return; 88 89 mutex_lock(&mvm->mutex); 90 91 memcpy(mvmvif->rekey_data.kek, data->kek, NL80211_KEK_LEN); 92 memcpy(mvmvif->rekey_data.kck, data->kck, NL80211_KCK_LEN); 93 mvmvif->rekey_data.replay_ctr = 94 cpu_to_le64(be64_to_cpup((__be64 *)data->replay_ctr)); 95 mvmvif->rekey_data.valid = true; 96 97 mutex_unlock(&mvm->mutex); 98 } 99 100 #if IS_ENABLED(CONFIG_IPV6) 101 void iwl_mvm_ipv6_addr_change(struct ieee80211_hw *hw, 102 struct ieee80211_vif *vif, 103 struct inet6_dev *idev) 104 { 105 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 106 struct inet6_ifaddr *ifa; 107 int idx = 0; 108 109 memset(mvmvif->tentative_addrs, 0, sizeof(mvmvif->tentative_addrs)); 110 111 read_lock_bh(&idev->lock); 112 list_for_each_entry(ifa, &idev->addr_list, if_list) { 113 mvmvif->target_ipv6_addrs[idx] = ifa->addr; 114 if (ifa->flags & IFA_F_TENTATIVE) 115 __set_bit(idx, mvmvif->tentative_addrs); 116 idx++; 117 if (idx >= IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_MAX) 118 break; 119 } 120 read_unlock_bh(&idev->lock); 121 122 mvmvif->num_target_ipv6_addrs = idx; 123 } 124 #endif 125 126 void iwl_mvm_set_default_unicast_key(struct ieee80211_hw *hw, 127 struct ieee80211_vif *vif, int idx) 128 { 129 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 130 131 mvmvif->tx_key_idx = idx; 132 } 133 134 static void iwl_mvm_convert_p1k(u16 *p1k, __le16 *out) 135 { 136 int i; 137 138 for (i = 0; i < IWL_P1K_SIZE; i++) 139 out[i] = cpu_to_le16(p1k[i]); 140 } 141 142 static const u8 *iwl_mvm_find_max_pn(struct ieee80211_key_conf *key, 143 struct iwl_mvm_key_pn *ptk_pn, 144 struct ieee80211_key_seq *seq, 145 int tid, int queues) 146 { 147 const u8 *ret = seq->ccmp.pn; 148 int i; 149 150 /* get the PN from mac80211, used on the default queue */ 151 ieee80211_get_key_rx_seq(key, tid, seq); 152 153 /* and use the internal data for the other queues */ 154 for (i = 1; i < queues; i++) { 155 const u8 *tmp = ptk_pn->q[i].pn[tid]; 156 157 if (memcmp(ret, tmp, IEEE80211_CCMP_PN_LEN) <= 0) 158 ret = tmp; 159 } 160 161 return ret; 162 } 163 164 struct wowlan_key_data { 165 struct iwl_wowlan_rsc_tsc_params_cmd *rsc_tsc; 166 struct iwl_wowlan_tkip_params_cmd *tkip; 167 bool error, use_rsc_tsc, use_tkip, configure_keys; 168 int wep_key_idx; 169 }; 170 171 static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw, 172 struct ieee80211_vif *vif, 173 struct ieee80211_sta *sta, 174 struct ieee80211_key_conf *key, 175 void *_data) 176 { 177 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 178 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 179 struct wowlan_key_data *data = _data; 180 struct aes_sc *aes_sc, *aes_tx_sc = NULL; 181 struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL; 182 struct iwl_p1k_cache *rx_p1ks; 183 u8 *rx_mic_key; 184 struct ieee80211_key_seq seq; 185 u32 cur_rx_iv32 = 0; 186 u16 p1k[IWL_P1K_SIZE]; 187 int ret, i; 188 189 switch (key->cipher) { 190 case WLAN_CIPHER_SUITE_WEP40: 191 case WLAN_CIPHER_SUITE_WEP104: { /* hack it for now */ 192 struct { 193 struct iwl_mvm_wep_key_cmd wep_key_cmd; 194 struct iwl_mvm_wep_key wep_key; 195 } __packed wkc = { 196 .wep_key_cmd.mac_id_n_color = 197 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 198 mvmvif->color)), 199 .wep_key_cmd.num_keys = 1, 200 /* firmware sets STA_KEY_FLG_WEP_13BYTES */ 201 .wep_key_cmd.decryption_type = STA_KEY_FLG_WEP, 202 .wep_key.key_index = key->keyidx, 203 .wep_key.key_size = key->keylen, 204 }; 205 206 /* 207 * This will fail -- the key functions don't set support 208 * pairwise WEP keys. However, that's better than silently 209 * failing WoWLAN. Or maybe not? 210 */ 211 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) 212 break; 213 214 memcpy(&wkc.wep_key.key[3], key->key, key->keylen); 215 if (key->keyidx == mvmvif->tx_key_idx) { 216 /* TX key must be at offset 0 */ 217 wkc.wep_key.key_offset = 0; 218 } else { 219 /* others start at 1 */ 220 data->wep_key_idx++; 221 wkc.wep_key.key_offset = data->wep_key_idx; 222 } 223 224 if (data->configure_keys) { 225 mutex_lock(&mvm->mutex); 226 ret = iwl_mvm_send_cmd_pdu(mvm, WEP_KEY, 0, 227 sizeof(wkc), &wkc); 228 data->error = ret != 0; 229 230 mvm->ptk_ivlen = key->iv_len; 231 mvm->ptk_icvlen = key->icv_len; 232 mvm->gtk_ivlen = key->iv_len; 233 mvm->gtk_icvlen = key->icv_len; 234 mutex_unlock(&mvm->mutex); 235 } 236 237 /* don't upload key again */ 238 return; 239 } 240 default: 241 data->error = true; 242 return; 243 case WLAN_CIPHER_SUITE_AES_CMAC: 244 /* 245 * Ignore CMAC keys -- the WoWLAN firmware doesn't support them 246 * but we also shouldn't abort suspend due to that. It does have 247 * support for the IGTK key renewal, but doesn't really use the 248 * IGTK for anything. This means we could spuriously wake up or 249 * be deauthenticated, but that was considered acceptable. 250 */ 251 return; 252 case WLAN_CIPHER_SUITE_TKIP: 253 if (sta) { 254 u64 pn64; 255 256 tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc; 257 tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc; 258 259 rx_p1ks = data->tkip->rx_uni; 260 261 pn64 = atomic64_read(&key->tx_pn); 262 tkip_tx_sc->iv16 = cpu_to_le16(TKIP_PN_TO_IV16(pn64)); 263 tkip_tx_sc->iv32 = cpu_to_le32(TKIP_PN_TO_IV32(pn64)); 264 265 ieee80211_get_tkip_p1k_iv(key, TKIP_PN_TO_IV32(pn64), 266 p1k); 267 iwl_mvm_convert_p1k(p1k, data->tkip->tx.p1k); 268 269 memcpy(data->tkip->mic_keys.tx, 270 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], 271 IWL_MIC_KEY_SIZE); 272 273 rx_mic_key = data->tkip->mic_keys.rx_unicast; 274 } else { 275 tkip_sc = 276 data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc; 277 rx_p1ks = data->tkip->rx_multi; 278 rx_mic_key = data->tkip->mic_keys.rx_mcast; 279 } 280 281 /* 282 * For non-QoS this relies on the fact that both the uCode and 283 * mac80211 use TID 0 (as they need to to avoid replay attacks) 284 * for checking the IV in the frames. 285 */ 286 for (i = 0; i < IWL_NUM_RSC; i++) { 287 ieee80211_get_key_rx_seq(key, i, &seq); 288 tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16); 289 tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32); 290 /* wrapping isn't allowed, AP must rekey */ 291 if (seq.tkip.iv32 > cur_rx_iv32) 292 cur_rx_iv32 = seq.tkip.iv32; 293 } 294 295 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid, 296 cur_rx_iv32, p1k); 297 iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k); 298 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid, 299 cur_rx_iv32 + 1, p1k); 300 iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k); 301 302 memcpy(rx_mic_key, 303 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], 304 IWL_MIC_KEY_SIZE); 305 306 data->use_tkip = true; 307 data->use_rsc_tsc = true; 308 break; 309 case WLAN_CIPHER_SUITE_CCMP: 310 if (sta) { 311 u64 pn64; 312 313 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc; 314 aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc; 315 316 pn64 = atomic64_read(&key->tx_pn); 317 aes_tx_sc->pn = cpu_to_le64(pn64); 318 } else { 319 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc; 320 } 321 322 /* 323 * For non-QoS this relies on the fact that both the uCode and 324 * mac80211/our RX code use TID 0 for checking the PN. 325 */ 326 if (sta && iwl_mvm_has_new_rx_api(mvm)) { 327 struct iwl_mvm_sta *mvmsta; 328 struct iwl_mvm_key_pn *ptk_pn; 329 const u8 *pn; 330 331 mvmsta = iwl_mvm_sta_from_mac80211(sta); 332 ptk_pn = rcu_dereference_protected( 333 mvmsta->ptk_pn[key->keyidx], 334 lockdep_is_held(&mvm->mutex)); 335 if (WARN_ON(!ptk_pn)) 336 break; 337 338 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 339 pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i, 340 mvm->trans->num_rx_queues); 341 aes_sc[i].pn = cpu_to_le64((u64)pn[5] | 342 ((u64)pn[4] << 8) | 343 ((u64)pn[3] << 16) | 344 ((u64)pn[2] << 24) | 345 ((u64)pn[1] << 32) | 346 ((u64)pn[0] << 40)); 347 } 348 } else { 349 for (i = 0; i < IWL_NUM_RSC; i++) { 350 u8 *pn = seq.ccmp.pn; 351 352 ieee80211_get_key_rx_seq(key, i, &seq); 353 aes_sc[i].pn = cpu_to_le64((u64)pn[5] | 354 ((u64)pn[4] << 8) | 355 ((u64)pn[3] << 16) | 356 ((u64)pn[2] << 24) | 357 ((u64)pn[1] << 32) | 358 ((u64)pn[0] << 40)); 359 } 360 } 361 data->use_rsc_tsc = true; 362 break; 363 } 364 365 if (data->configure_keys) { 366 mutex_lock(&mvm->mutex); 367 /* 368 * The D3 firmware hardcodes the key offset 0 as the key it 369 * uses to transmit packets to the AP, i.e. the PTK. 370 */ 371 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) { 372 mvm->ptk_ivlen = key->iv_len; 373 mvm->ptk_icvlen = key->icv_len; 374 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 0); 375 } else { 376 /* 377 * firmware only supports TSC/RSC for a single key, 378 * so if there are multiple keep overwriting them 379 * with new ones -- this relies on mac80211 doing 380 * list_add_tail(). 381 */ 382 mvm->gtk_ivlen = key->iv_len; 383 mvm->gtk_icvlen = key->icv_len; 384 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 1); 385 } 386 mutex_unlock(&mvm->mutex); 387 data->error = ret != 0; 388 } 389 } 390 391 static int iwl_mvm_send_patterns(struct iwl_mvm *mvm, 392 struct cfg80211_wowlan *wowlan) 393 { 394 struct iwl_wowlan_patterns_cmd *pattern_cmd; 395 struct iwl_host_cmd cmd = { 396 .id = WOWLAN_PATTERNS, 397 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 398 }; 399 int i, err; 400 401 if (!wowlan->n_patterns) 402 return 0; 403 404 cmd.len[0] = sizeof(*pattern_cmd) + 405 wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern); 406 407 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL); 408 if (!pattern_cmd) 409 return -ENOMEM; 410 411 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns); 412 413 for (i = 0; i < wowlan->n_patterns; i++) { 414 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8); 415 416 memcpy(&pattern_cmd->patterns[i].mask, 417 wowlan->patterns[i].mask, mask_len); 418 memcpy(&pattern_cmd->patterns[i].pattern, 419 wowlan->patterns[i].pattern, 420 wowlan->patterns[i].pattern_len); 421 pattern_cmd->patterns[i].mask_size = mask_len; 422 pattern_cmd->patterns[i].pattern_size = 423 wowlan->patterns[i].pattern_len; 424 } 425 426 cmd.data[0] = pattern_cmd; 427 err = iwl_mvm_send_cmd(mvm, &cmd); 428 kfree(pattern_cmd); 429 return err; 430 } 431 432 enum iwl_mvm_tcp_packet_type { 433 MVM_TCP_TX_SYN, 434 MVM_TCP_RX_SYNACK, 435 MVM_TCP_TX_DATA, 436 MVM_TCP_RX_ACK, 437 MVM_TCP_RX_WAKE, 438 MVM_TCP_TX_FIN, 439 }; 440 441 static __le16 pseudo_hdr_check(int len, __be32 saddr, __be32 daddr) 442 { 443 __sum16 check = tcp_v4_check(len, saddr, daddr, 0); 444 return cpu_to_le16(be16_to_cpu((__force __be16)check)); 445 } 446 447 static void iwl_mvm_build_tcp_packet(struct ieee80211_vif *vif, 448 struct cfg80211_wowlan_tcp *tcp, 449 void *_pkt, u8 *mask, 450 __le16 *pseudo_hdr_csum, 451 enum iwl_mvm_tcp_packet_type ptype) 452 { 453 struct { 454 struct ethhdr eth; 455 struct iphdr ip; 456 struct tcphdr tcp; 457 u8 data[]; 458 } __packed *pkt = _pkt; 459 u16 ip_tot_len = sizeof(struct iphdr) + sizeof(struct tcphdr); 460 int i; 461 462 pkt->eth.h_proto = cpu_to_be16(ETH_P_IP), 463 pkt->ip.version = 4; 464 pkt->ip.ihl = 5; 465 pkt->ip.protocol = IPPROTO_TCP; 466 467 switch (ptype) { 468 case MVM_TCP_TX_SYN: 469 case MVM_TCP_TX_DATA: 470 case MVM_TCP_TX_FIN: 471 memcpy(pkt->eth.h_dest, tcp->dst_mac, ETH_ALEN); 472 memcpy(pkt->eth.h_source, vif->addr, ETH_ALEN); 473 pkt->ip.ttl = 128; 474 pkt->ip.saddr = tcp->src; 475 pkt->ip.daddr = tcp->dst; 476 pkt->tcp.source = cpu_to_be16(tcp->src_port); 477 pkt->tcp.dest = cpu_to_be16(tcp->dst_port); 478 /* overwritten for TX SYN later */ 479 pkt->tcp.doff = sizeof(struct tcphdr) / 4; 480 pkt->tcp.window = cpu_to_be16(65000); 481 break; 482 case MVM_TCP_RX_SYNACK: 483 case MVM_TCP_RX_ACK: 484 case MVM_TCP_RX_WAKE: 485 memcpy(pkt->eth.h_dest, vif->addr, ETH_ALEN); 486 memcpy(pkt->eth.h_source, tcp->dst_mac, ETH_ALEN); 487 pkt->ip.saddr = tcp->dst; 488 pkt->ip.daddr = tcp->src; 489 pkt->tcp.source = cpu_to_be16(tcp->dst_port); 490 pkt->tcp.dest = cpu_to_be16(tcp->src_port); 491 break; 492 default: 493 WARN_ON(1); 494 return; 495 } 496 497 switch (ptype) { 498 case MVM_TCP_TX_SYN: 499 /* firmware assumes 8 option bytes - 8 NOPs for now */ 500 memset(pkt->data, 0x01, 8); 501 ip_tot_len += 8; 502 pkt->tcp.doff = (sizeof(struct tcphdr) + 8) / 4; 503 pkt->tcp.syn = 1; 504 break; 505 case MVM_TCP_TX_DATA: 506 ip_tot_len += tcp->payload_len; 507 memcpy(pkt->data, tcp->payload, tcp->payload_len); 508 pkt->tcp.psh = 1; 509 pkt->tcp.ack = 1; 510 break; 511 case MVM_TCP_TX_FIN: 512 pkt->tcp.fin = 1; 513 pkt->tcp.ack = 1; 514 break; 515 case MVM_TCP_RX_SYNACK: 516 pkt->tcp.syn = 1; 517 pkt->tcp.ack = 1; 518 break; 519 case MVM_TCP_RX_ACK: 520 pkt->tcp.ack = 1; 521 break; 522 case MVM_TCP_RX_WAKE: 523 ip_tot_len += tcp->wake_len; 524 pkt->tcp.psh = 1; 525 pkt->tcp.ack = 1; 526 memcpy(pkt->data, tcp->wake_data, tcp->wake_len); 527 break; 528 } 529 530 switch (ptype) { 531 case MVM_TCP_TX_SYN: 532 case MVM_TCP_TX_DATA: 533 case MVM_TCP_TX_FIN: 534 pkt->ip.tot_len = cpu_to_be16(ip_tot_len); 535 pkt->ip.check = ip_fast_csum(&pkt->ip, pkt->ip.ihl); 536 break; 537 case MVM_TCP_RX_WAKE: 538 for (i = 0; i < DIV_ROUND_UP(tcp->wake_len, 8); i++) { 539 u8 tmp = tcp->wake_mask[i]; 540 mask[i + 6] |= tmp << 6; 541 if (i + 1 < DIV_ROUND_UP(tcp->wake_len, 8)) 542 mask[i + 7] = tmp >> 2; 543 } 544 /* fall through for ethernet/IP/TCP headers mask */ 545 case MVM_TCP_RX_SYNACK: 546 case MVM_TCP_RX_ACK: 547 mask[0] = 0xff; /* match ethernet */ 548 /* 549 * match ethernet, ip.version, ip.ihl 550 * the ip.ihl half byte is really masked out by firmware 551 */ 552 mask[1] = 0x7f; 553 mask[2] = 0x80; /* match ip.protocol */ 554 mask[3] = 0xfc; /* match ip.saddr, ip.daddr */ 555 mask[4] = 0x3f; /* match ip.daddr, tcp.source, tcp.dest */ 556 mask[5] = 0x80; /* match tcp flags */ 557 /* leave rest (0 or set for MVM_TCP_RX_WAKE) */ 558 break; 559 }; 560 561 *pseudo_hdr_csum = pseudo_hdr_check(ip_tot_len - sizeof(struct iphdr), 562 pkt->ip.saddr, pkt->ip.daddr); 563 } 564 565 static int iwl_mvm_send_remote_wake_cfg(struct iwl_mvm *mvm, 566 struct ieee80211_vif *vif, 567 struct cfg80211_wowlan_tcp *tcp) 568 { 569 struct iwl_wowlan_remote_wake_config *cfg; 570 struct iwl_host_cmd cmd = { 571 .id = REMOTE_WAKE_CONFIG_CMD, 572 .len = { sizeof(*cfg), }, 573 .dataflags = { IWL_HCMD_DFL_NOCOPY, }, 574 }; 575 int ret; 576 577 if (!tcp) 578 return 0; 579 580 cfg = kzalloc(sizeof(*cfg), GFP_KERNEL); 581 if (!cfg) 582 return -ENOMEM; 583 cmd.data[0] = cfg; 584 585 cfg->max_syn_retries = 10; 586 cfg->max_data_retries = 10; 587 cfg->tcp_syn_ack_timeout = 1; /* seconds */ 588 cfg->tcp_ack_timeout = 1; /* seconds */ 589 590 /* SYN (TX) */ 591 iwl_mvm_build_tcp_packet( 592 vif, tcp, cfg->syn_tx.data, NULL, 593 &cfg->syn_tx.info.tcp_pseudo_header_checksum, 594 MVM_TCP_TX_SYN); 595 cfg->syn_tx.info.tcp_payload_length = 0; 596 597 /* SYN/ACK (RX) */ 598 iwl_mvm_build_tcp_packet( 599 vif, tcp, cfg->synack_rx.data, cfg->synack_rx.rx_mask, 600 &cfg->synack_rx.info.tcp_pseudo_header_checksum, 601 MVM_TCP_RX_SYNACK); 602 cfg->synack_rx.info.tcp_payload_length = 0; 603 604 /* KEEPALIVE/ACK (TX) */ 605 iwl_mvm_build_tcp_packet( 606 vif, tcp, cfg->keepalive_tx.data, NULL, 607 &cfg->keepalive_tx.info.tcp_pseudo_header_checksum, 608 MVM_TCP_TX_DATA); 609 cfg->keepalive_tx.info.tcp_payload_length = 610 cpu_to_le16(tcp->payload_len); 611 cfg->sequence_number_offset = tcp->payload_seq.offset; 612 /* length must be 0..4, the field is little endian */ 613 cfg->sequence_number_length = tcp->payload_seq.len; 614 cfg->initial_sequence_number = cpu_to_le32(tcp->payload_seq.start); 615 cfg->keepalive_interval = cpu_to_le16(tcp->data_interval); 616 if (tcp->payload_tok.len) { 617 cfg->token_offset = tcp->payload_tok.offset; 618 cfg->token_length = tcp->payload_tok.len; 619 cfg->num_tokens = 620 cpu_to_le16(tcp->tokens_size % tcp->payload_tok.len); 621 memcpy(cfg->tokens, tcp->payload_tok.token_stream, 622 tcp->tokens_size); 623 } else { 624 /* set tokens to max value to almost never run out */ 625 cfg->num_tokens = cpu_to_le16(65535); 626 } 627 628 /* ACK (RX) */ 629 iwl_mvm_build_tcp_packet( 630 vif, tcp, cfg->keepalive_ack_rx.data, 631 cfg->keepalive_ack_rx.rx_mask, 632 &cfg->keepalive_ack_rx.info.tcp_pseudo_header_checksum, 633 MVM_TCP_RX_ACK); 634 cfg->keepalive_ack_rx.info.tcp_payload_length = 0; 635 636 /* WAKEUP (RX) */ 637 iwl_mvm_build_tcp_packet( 638 vif, tcp, cfg->wake_rx.data, cfg->wake_rx.rx_mask, 639 &cfg->wake_rx.info.tcp_pseudo_header_checksum, 640 MVM_TCP_RX_WAKE); 641 cfg->wake_rx.info.tcp_payload_length = 642 cpu_to_le16(tcp->wake_len); 643 644 /* FIN */ 645 iwl_mvm_build_tcp_packet( 646 vif, tcp, cfg->fin_tx.data, NULL, 647 &cfg->fin_tx.info.tcp_pseudo_header_checksum, 648 MVM_TCP_TX_FIN); 649 cfg->fin_tx.info.tcp_payload_length = 0; 650 651 ret = iwl_mvm_send_cmd(mvm, &cmd); 652 kfree(cfg); 653 654 return ret; 655 } 656 657 static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 658 struct ieee80211_sta *ap_sta) 659 { 660 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 661 struct ieee80211_chanctx_conf *ctx; 662 u8 chains_static, chains_dynamic; 663 struct cfg80211_chan_def chandef; 664 int ret, i; 665 struct iwl_binding_cmd binding_cmd = {}; 666 struct iwl_time_quota_cmd quota_cmd = {}; 667 u32 status; 668 int size; 669 670 if (fw_has_capa(&mvm->fw->ucode_capa, 671 IWL_UCODE_TLV_CAPA_BINDING_CDB_SUPPORT)) { 672 size = sizeof(binding_cmd); 673 if (mvmvif->phy_ctxt->channel->band == NL80211_BAND_2GHZ || 674 !iwl_mvm_is_cdb_supported(mvm)) 675 binding_cmd.lmac_id = cpu_to_le32(IWL_LMAC_24G_INDEX); 676 else 677 binding_cmd.lmac_id = cpu_to_le32(IWL_LMAC_5G_INDEX); 678 } else { 679 size = IWL_BINDING_CMD_SIZE_V1; 680 } 681 682 /* add back the PHY */ 683 if (WARN_ON(!mvmvif->phy_ctxt)) 684 return -EINVAL; 685 686 rcu_read_lock(); 687 ctx = rcu_dereference(vif->chanctx_conf); 688 if (WARN_ON(!ctx)) { 689 rcu_read_unlock(); 690 return -EINVAL; 691 } 692 chandef = ctx->def; 693 chains_static = ctx->rx_chains_static; 694 chains_dynamic = ctx->rx_chains_dynamic; 695 rcu_read_unlock(); 696 697 ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt, &chandef, 698 chains_static, chains_dynamic); 699 if (ret) 700 return ret; 701 702 /* add back the MAC */ 703 mvmvif->uploaded = false; 704 705 if (WARN_ON(!vif->bss_conf.assoc)) 706 return -EINVAL; 707 708 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 709 if (ret) 710 return ret; 711 712 /* add back binding - XXX refactor? */ 713 binding_cmd.id_and_color = 714 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id, 715 mvmvif->phy_ctxt->color)); 716 binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD); 717 binding_cmd.phy = 718 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id, 719 mvmvif->phy_ctxt->color)); 720 binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 721 mvmvif->color)); 722 for (i = 1; i < MAX_MACS_IN_BINDING; i++) 723 binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID); 724 725 status = 0; 726 ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD, 727 size, &binding_cmd, &status); 728 if (ret) { 729 IWL_ERR(mvm, "Failed to add binding: %d\n", ret); 730 return ret; 731 } 732 733 if (status) { 734 IWL_ERR(mvm, "Binding command failed: %u\n", status); 735 return -EIO; 736 } 737 738 ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false, 0); 739 if (ret) 740 return ret; 741 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], ap_sta); 742 743 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 744 if (ret) 745 return ret; 746 747 /* and some quota */ 748 quota_cmd.quotas[0].id_and_color = 749 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id, 750 mvmvif->phy_ctxt->color)); 751 quota_cmd.quotas[0].quota = cpu_to_le32(IWL_MVM_MAX_QUOTA); 752 quota_cmd.quotas[0].max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA); 753 754 for (i = 1; i < MAX_BINDINGS; i++) 755 quota_cmd.quotas[i].id_and_color = cpu_to_le32(FW_CTXT_INVALID); 756 757 ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0, 758 sizeof(quota_cmd), "a_cmd); 759 if (ret) 760 IWL_ERR(mvm, "Failed to send quota: %d\n", ret); 761 762 if (iwl_mvm_is_lar_supported(mvm) && iwl_mvm_init_fw_regd(mvm)) 763 IWL_ERR(mvm, "Failed to initialize D3 LAR information\n"); 764 765 return 0; 766 } 767 768 static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm, 769 struct ieee80211_vif *vif) 770 { 771 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 772 struct iwl_nonqos_seq_query_cmd query_cmd = { 773 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET), 774 .mac_id_n_color = 775 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 776 mvmvif->color)), 777 }; 778 struct iwl_host_cmd cmd = { 779 .id = NON_QOS_TX_COUNTER_CMD, 780 .flags = CMD_WANT_SKB, 781 }; 782 int err; 783 u32 size; 784 785 cmd.data[0] = &query_cmd; 786 cmd.len[0] = sizeof(query_cmd); 787 788 err = iwl_mvm_send_cmd(mvm, &cmd); 789 if (err) 790 return err; 791 792 size = iwl_rx_packet_payload_len(cmd.resp_pkt); 793 if (size < sizeof(__le16)) { 794 err = -EINVAL; 795 } else { 796 err = le16_to_cpup((__le16 *)cmd.resp_pkt->data); 797 /* firmware returns next, not last-used seqno */ 798 err = (u16) (err - 0x10); 799 } 800 801 iwl_free_resp(&cmd); 802 return err; 803 } 804 805 void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 806 { 807 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 808 struct iwl_nonqos_seq_query_cmd query_cmd = { 809 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET), 810 .mac_id_n_color = 811 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 812 mvmvif->color)), 813 .value = cpu_to_le16(mvmvif->seqno), 814 }; 815 816 /* return if called during restart, not resume from D3 */ 817 if (!mvmvif->seqno_valid) 818 return; 819 820 mvmvif->seqno_valid = false; 821 822 if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0, 823 sizeof(query_cmd), &query_cmd)) 824 IWL_ERR(mvm, "failed to set non-QoS seqno\n"); 825 } 826 827 static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm) 828 { 829 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 830 831 iwl_mvm_stop_device(mvm); 832 /* 833 * Set the HW restart bit -- this is mostly true as we're 834 * going to load new firmware and reprogram that, though 835 * the reprogramming is going to be manual to avoid adding 836 * all the MACs that aren't support. 837 * We don't have to clear up everything though because the 838 * reprogramming is manual. When we resume, we'll actually 839 * go through a proper restart sequence again to switch 840 * back to the runtime firmware image. 841 */ 842 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 843 844 /* the fw is reset, so all the keys are cleared */ 845 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); 846 847 mvm->ptk_ivlen = 0; 848 mvm->ptk_icvlen = 0; 849 mvm->ptk_ivlen = 0; 850 mvm->ptk_icvlen = 0; 851 852 return iwl_mvm_load_d3_fw(mvm); 853 } 854 855 static int 856 iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm, 857 struct cfg80211_wowlan *wowlan, 858 struct iwl_wowlan_config_cmd *wowlan_config_cmd, 859 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif, 860 struct ieee80211_sta *ap_sta) 861 { 862 int ret; 863 struct iwl_mvm_sta *mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta); 864 865 /* TODO: wowlan_config_cmd->wowlan_ba_teardown_tids */ 866 867 wowlan_config_cmd->is_11n_connection = 868 ap_sta->ht_cap.ht_supported; 869 wowlan_config_cmd->flags = ENABLE_L3_FILTERING | 870 ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING; 871 872 /* Query the last used seqno and set it */ 873 ret = iwl_mvm_get_last_nonqos_seq(mvm, vif); 874 if (ret < 0) 875 return ret; 876 877 wowlan_config_cmd->non_qos_seq = cpu_to_le16(ret); 878 879 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, wowlan_config_cmd); 880 881 if (wowlan->disconnect) 882 wowlan_config_cmd->wakeup_filter |= 883 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS | 884 IWL_WOWLAN_WAKEUP_LINK_CHANGE); 885 if (wowlan->magic_pkt) 886 wowlan_config_cmd->wakeup_filter |= 887 cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET); 888 if (wowlan->gtk_rekey_failure) 889 wowlan_config_cmd->wakeup_filter |= 890 cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL); 891 if (wowlan->eap_identity_req) 892 wowlan_config_cmd->wakeup_filter |= 893 cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ); 894 if (wowlan->four_way_handshake) 895 wowlan_config_cmd->wakeup_filter |= 896 cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE); 897 if (wowlan->n_patterns) 898 wowlan_config_cmd->wakeup_filter |= 899 cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH); 900 901 if (wowlan->rfkill_release) 902 wowlan_config_cmd->wakeup_filter |= 903 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT); 904 905 if (wowlan->tcp) { 906 /* 907 * Set the "link change" (really "link lost") flag as well 908 * since that implies losing the TCP connection. 909 */ 910 wowlan_config_cmd->wakeup_filter |= 911 cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS | 912 IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE | 913 IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET | 914 IWL_WOWLAN_WAKEUP_LINK_CHANGE); 915 } 916 917 return 0; 918 } 919 920 static void 921 iwl_mvm_iter_d0i3_ap_keys(struct iwl_mvm *mvm, 922 struct ieee80211_vif *vif, 923 void (*iter)(struct ieee80211_hw *hw, 924 struct ieee80211_vif *vif, 925 struct ieee80211_sta *sta, 926 struct ieee80211_key_conf *key, 927 void *data), 928 void *data) 929 { 930 struct ieee80211_sta *ap_sta; 931 932 rcu_read_lock(); 933 934 ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id]); 935 if (IS_ERR_OR_NULL(ap_sta)) 936 goto out; 937 938 ieee80211_iter_keys_rcu(mvm->hw, vif, iter, data); 939 out: 940 rcu_read_unlock(); 941 } 942 943 int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm, 944 struct ieee80211_vif *vif, 945 bool d0i3, 946 u32 cmd_flags) 947 { 948 struct iwl_wowlan_kek_kck_material_cmd kek_kck_cmd = {}; 949 struct iwl_wowlan_tkip_params_cmd tkip_cmd = {}; 950 struct wowlan_key_data key_data = { 951 .configure_keys = !d0i3, 952 .use_rsc_tsc = false, 953 .tkip = &tkip_cmd, 954 .use_tkip = false, 955 }; 956 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 957 int ret; 958 959 key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL); 960 if (!key_data.rsc_tsc) 961 return -ENOMEM; 962 963 /* 964 * if we have to configure keys, call ieee80211_iter_keys(), 965 * as we need non-atomic context in order to take the 966 * required locks. 967 * for the d0i3 we can't use ieee80211_iter_keys(), as 968 * taking (almost) any mutex might result in deadlock. 969 */ 970 if (!d0i3) { 971 /* 972 * Note that currently we don't propagate cmd_flags 973 * to the iterator. In case of key_data.configure_keys, 974 * all the configured commands are SYNC, and 975 * iwl_mvm_wowlan_program_keys() will take care of 976 * locking/unlocking mvm->mutex. 977 */ 978 ieee80211_iter_keys(mvm->hw, vif, 979 iwl_mvm_wowlan_program_keys, 980 &key_data); 981 } else { 982 iwl_mvm_iter_d0i3_ap_keys(mvm, vif, 983 iwl_mvm_wowlan_program_keys, 984 &key_data); 985 } 986 987 if (key_data.error) { 988 ret = -EIO; 989 goto out; 990 } 991 992 if (key_data.use_rsc_tsc) { 993 ret = iwl_mvm_send_cmd_pdu(mvm, 994 WOWLAN_TSC_RSC_PARAM, cmd_flags, 995 sizeof(*key_data.rsc_tsc), 996 key_data.rsc_tsc); 997 if (ret) 998 goto out; 999 } 1000 1001 if (key_data.use_tkip && 1002 !fw_has_api(&mvm->fw->ucode_capa, 1003 IWL_UCODE_TLV_API_TKIP_MIC_KEYS)) { 1004 ret = iwl_mvm_send_cmd_pdu(mvm, 1005 WOWLAN_TKIP_PARAM, 1006 cmd_flags, sizeof(tkip_cmd), 1007 &tkip_cmd); 1008 if (ret) 1009 goto out; 1010 } 1011 1012 /* configure rekey data only if offloaded rekey is supported (d3) */ 1013 if (mvmvif->rekey_data.valid && !d0i3) { 1014 memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd)); 1015 memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck, 1016 NL80211_KCK_LEN); 1017 kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN); 1018 memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek, 1019 NL80211_KEK_LEN); 1020 kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN); 1021 kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr; 1022 1023 ret = iwl_mvm_send_cmd_pdu(mvm, 1024 WOWLAN_KEK_KCK_MATERIAL, cmd_flags, 1025 sizeof(kek_kck_cmd), 1026 &kek_kck_cmd); 1027 if (ret) 1028 goto out; 1029 } 1030 ret = 0; 1031 out: 1032 kfree(key_data.rsc_tsc); 1033 return ret; 1034 } 1035 1036 static int 1037 iwl_mvm_wowlan_config(struct iwl_mvm *mvm, 1038 struct cfg80211_wowlan *wowlan, 1039 struct iwl_wowlan_config_cmd *wowlan_config_cmd, 1040 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif, 1041 struct ieee80211_sta *ap_sta) 1042 { 1043 int ret; 1044 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 1045 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1046 1047 if (!unified_image) { 1048 ret = iwl_mvm_switch_to_d3(mvm); 1049 if (ret) 1050 return ret; 1051 1052 ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta); 1053 if (ret) 1054 return ret; 1055 } 1056 1057 if (!iwlwifi_mod_params.swcrypto) { 1058 /* 1059 * This needs to be unlocked due to lock ordering 1060 * constraints. Since we're in the suspend path 1061 * that isn't really a problem though. 1062 */ 1063 mutex_unlock(&mvm->mutex); 1064 ret = iwl_mvm_wowlan_config_key_params(mvm, vif, false, 1065 CMD_ASYNC); 1066 mutex_lock(&mvm->mutex); 1067 if (ret) 1068 return ret; 1069 } 1070 1071 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0, 1072 sizeof(*wowlan_config_cmd), 1073 wowlan_config_cmd); 1074 if (ret) 1075 return ret; 1076 1077 ret = iwl_mvm_send_patterns(mvm, wowlan); 1078 if (ret) 1079 return ret; 1080 1081 ret = iwl_mvm_send_proto_offload(mvm, vif, false, true, 0); 1082 if (ret) 1083 return ret; 1084 1085 ret = iwl_mvm_send_remote_wake_cfg(mvm, vif, wowlan->tcp); 1086 return ret; 1087 } 1088 1089 static int 1090 iwl_mvm_netdetect_config(struct iwl_mvm *mvm, 1091 struct cfg80211_wowlan *wowlan, 1092 struct cfg80211_sched_scan_request *nd_config, 1093 struct ieee80211_vif *vif) 1094 { 1095 struct iwl_wowlan_config_cmd wowlan_config_cmd = {}; 1096 int ret; 1097 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 1098 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1099 1100 if (!unified_image) { 1101 ret = iwl_mvm_switch_to_d3(mvm); 1102 if (ret) 1103 return ret; 1104 } else { 1105 /* In theory, we wouldn't have to stop a running sched 1106 * scan in order to start another one (for 1107 * net-detect). But in practice this doesn't seem to 1108 * work properly, so stop any running sched_scan now. 1109 */ 1110 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 1111 if (ret) 1112 return ret; 1113 } 1114 1115 /* rfkill release can be either for wowlan or netdetect */ 1116 if (wowlan->rfkill_release) 1117 wowlan_config_cmd.wakeup_filter |= 1118 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT); 1119 1120 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0, 1121 sizeof(wowlan_config_cmd), 1122 &wowlan_config_cmd); 1123 if (ret) 1124 return ret; 1125 1126 ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies, 1127 IWL_MVM_SCAN_NETDETECT); 1128 if (ret) 1129 return ret; 1130 1131 if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels)) 1132 return -EBUSY; 1133 1134 /* save the sched scan matchsets... */ 1135 if (nd_config->n_match_sets) { 1136 mvm->nd_match_sets = kmemdup(nd_config->match_sets, 1137 sizeof(*nd_config->match_sets) * 1138 nd_config->n_match_sets, 1139 GFP_KERNEL); 1140 if (mvm->nd_match_sets) 1141 mvm->n_nd_match_sets = nd_config->n_match_sets; 1142 } 1143 1144 /* ...and the sched scan channels for later reporting */ 1145 mvm->nd_channels = kmemdup(nd_config->channels, 1146 sizeof(*nd_config->channels) * 1147 nd_config->n_channels, 1148 GFP_KERNEL); 1149 if (mvm->nd_channels) 1150 mvm->n_nd_channels = nd_config->n_channels; 1151 1152 return 0; 1153 } 1154 1155 static void iwl_mvm_free_nd(struct iwl_mvm *mvm) 1156 { 1157 kfree(mvm->nd_match_sets); 1158 mvm->nd_match_sets = NULL; 1159 mvm->n_nd_match_sets = 0; 1160 kfree(mvm->nd_channels); 1161 mvm->nd_channels = NULL; 1162 mvm->n_nd_channels = 0; 1163 } 1164 1165 static int __iwl_mvm_suspend(struct ieee80211_hw *hw, 1166 struct cfg80211_wowlan *wowlan, 1167 bool test) 1168 { 1169 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1170 struct ieee80211_vif *vif = NULL; 1171 struct iwl_mvm_vif *mvmvif = NULL; 1172 struct ieee80211_sta *ap_sta = NULL; 1173 struct iwl_d3_manager_config d3_cfg_cmd_data = { 1174 /* 1175 * Program the minimum sleep time to 10 seconds, as many 1176 * platforms have issues processing a wakeup signal while 1177 * still being in the process of suspending. 1178 */ 1179 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000), 1180 }; 1181 struct iwl_host_cmd d3_cfg_cmd = { 1182 .id = D3_CONFIG_CMD, 1183 .flags = CMD_WANT_SKB, 1184 .data[0] = &d3_cfg_cmd_data, 1185 .len[0] = sizeof(d3_cfg_cmd_data), 1186 }; 1187 int ret; 1188 int len __maybe_unused; 1189 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 1190 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1191 1192 if (!wowlan) { 1193 /* 1194 * mac80211 shouldn't get here, but for D3 test 1195 * it doesn't warrant a warning 1196 */ 1197 WARN_ON(!test); 1198 return -EINVAL; 1199 } 1200 1201 mutex_lock(&mvm->mutex); 1202 1203 vif = iwl_mvm_get_bss_vif(mvm); 1204 if (IS_ERR_OR_NULL(vif)) { 1205 ret = 1; 1206 goto out_noreset; 1207 } 1208 1209 mvmvif = iwl_mvm_vif_from_mac80211(vif); 1210 1211 if (mvmvif->ap_sta_id == IWL_MVM_INVALID_STA) { 1212 /* if we're not associated, this must be netdetect */ 1213 if (!wowlan->nd_config) { 1214 ret = 1; 1215 goto out_noreset; 1216 } 1217 1218 ret = iwl_mvm_netdetect_config( 1219 mvm, wowlan, wowlan->nd_config, vif); 1220 if (ret) 1221 goto out; 1222 1223 mvm->net_detect = true; 1224 } else { 1225 struct iwl_wowlan_config_cmd wowlan_config_cmd = {}; 1226 1227 ap_sta = rcu_dereference_protected( 1228 mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], 1229 lockdep_is_held(&mvm->mutex)); 1230 if (IS_ERR_OR_NULL(ap_sta)) { 1231 ret = -EINVAL; 1232 goto out_noreset; 1233 } 1234 1235 ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd, 1236 vif, mvmvif, ap_sta); 1237 if (ret) 1238 goto out_noreset; 1239 ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd, 1240 vif, mvmvif, ap_sta); 1241 if (ret) 1242 goto out; 1243 1244 mvm->net_detect = false; 1245 } 1246 1247 ret = iwl_mvm_power_update_device(mvm); 1248 if (ret) 1249 goto out; 1250 1251 ret = iwl_mvm_power_update_mac(mvm); 1252 if (ret) 1253 goto out; 1254 1255 #ifdef CONFIG_IWLWIFI_DEBUGFS 1256 if (mvm->d3_wake_sysassert) 1257 d3_cfg_cmd_data.wakeup_flags |= 1258 cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR); 1259 #endif 1260 1261 /* must be last -- this switches firmware state */ 1262 ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd); 1263 if (ret) 1264 goto out; 1265 #ifdef CONFIG_IWLWIFI_DEBUGFS 1266 len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt); 1267 if (len >= sizeof(u32)) { 1268 mvm->d3_test_pme_ptr = 1269 le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data); 1270 } 1271 #endif 1272 iwl_free_resp(&d3_cfg_cmd); 1273 1274 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1275 1276 iwl_trans_d3_suspend(mvm->trans, test, !unified_image); 1277 out: 1278 if (ret < 0) { 1279 iwl_mvm_free_nd(mvm); 1280 1281 if (!unified_image) { 1282 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN); 1283 if (mvm->fw_restart > 0) { 1284 mvm->fw_restart--; 1285 ieee80211_restart_hw(mvm->hw); 1286 } 1287 } 1288 } 1289 out_noreset: 1290 mutex_unlock(&mvm->mutex); 1291 1292 return ret; 1293 } 1294 1295 static int iwl_mvm_enter_d0i3_sync(struct iwl_mvm *mvm) 1296 { 1297 struct iwl_notification_wait wait_d3; 1298 static const u16 d3_notif[] = { D3_CONFIG_CMD }; 1299 int ret; 1300 1301 iwl_init_notification_wait(&mvm->notif_wait, &wait_d3, 1302 d3_notif, ARRAY_SIZE(d3_notif), 1303 NULL, NULL); 1304 1305 ret = iwl_mvm_enter_d0i3(mvm->hw->priv); 1306 if (ret) 1307 goto remove_notif; 1308 1309 ret = iwl_wait_notification(&mvm->notif_wait, &wait_d3, HZ); 1310 WARN_ON_ONCE(ret); 1311 return ret; 1312 1313 remove_notif: 1314 iwl_remove_notification(&mvm->notif_wait, &wait_d3); 1315 return ret; 1316 } 1317 1318 int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) 1319 { 1320 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1321 struct iwl_trans *trans = mvm->trans; 1322 int ret; 1323 1324 /* make sure the d0i3 exit work is not pending */ 1325 flush_work(&mvm->d0i3_exit_work); 1326 1327 ret = iwl_trans_suspend(trans); 1328 if (ret) 1329 return ret; 1330 1331 if (wowlan->any) { 1332 trans->system_pm_mode = IWL_PLAT_PM_MODE_D0I3; 1333 1334 if (iwl_mvm_enter_d0i3_on_suspend(mvm)) { 1335 ret = iwl_mvm_enter_d0i3_sync(mvm); 1336 1337 if (ret) 1338 return ret; 1339 } 1340 1341 mutex_lock(&mvm->d0i3_suspend_mutex); 1342 __set_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags); 1343 mutex_unlock(&mvm->d0i3_suspend_mutex); 1344 1345 iwl_trans_d3_suspend(trans, false, false); 1346 1347 return 0; 1348 } 1349 1350 trans->system_pm_mode = IWL_PLAT_PM_MODE_D3; 1351 1352 return __iwl_mvm_suspend(hw, wowlan, false); 1353 } 1354 1355 /* converted data from the different status responses */ 1356 struct iwl_wowlan_status_data { 1357 u16 pattern_number; 1358 u16 qos_seq_ctr[8]; 1359 u32 wakeup_reasons; 1360 u32 wake_packet_length; 1361 u32 wake_packet_bufsize; 1362 const u8 *wake_packet; 1363 }; 1364 1365 static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm, 1366 struct ieee80211_vif *vif, 1367 struct iwl_wowlan_status_data *status) 1368 { 1369 struct sk_buff *pkt = NULL; 1370 struct cfg80211_wowlan_wakeup wakeup = { 1371 .pattern_idx = -1, 1372 }; 1373 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; 1374 u32 reasons = status->wakeup_reasons; 1375 1376 if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) { 1377 wakeup_report = NULL; 1378 goto report; 1379 } 1380 1381 pm_wakeup_event(mvm->dev, 0); 1382 1383 if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET) 1384 wakeup.magic_pkt = true; 1385 1386 if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN) 1387 wakeup.pattern_idx = 1388 status->pattern_number; 1389 1390 if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 1391 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)) 1392 wakeup.disconnect = true; 1393 1394 if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE) 1395 wakeup.gtk_rekey_failure = true; 1396 1397 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 1398 wakeup.rfkill_release = true; 1399 1400 if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST) 1401 wakeup.eap_identity_req = true; 1402 1403 if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE) 1404 wakeup.four_way_handshake = true; 1405 1406 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS) 1407 wakeup.tcp_connlost = true; 1408 1409 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE) 1410 wakeup.tcp_nomoretokens = true; 1411 1412 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET) 1413 wakeup.tcp_match = true; 1414 1415 if (status->wake_packet_bufsize) { 1416 int pktsize = status->wake_packet_bufsize; 1417 int pktlen = status->wake_packet_length; 1418 const u8 *pktdata = status->wake_packet; 1419 struct ieee80211_hdr *hdr = (void *)pktdata; 1420 int truncated = pktlen - pktsize; 1421 1422 /* this would be a firmware bug */ 1423 if (WARN_ON_ONCE(truncated < 0)) 1424 truncated = 0; 1425 1426 if (ieee80211_is_data(hdr->frame_control)) { 1427 int hdrlen = ieee80211_hdrlen(hdr->frame_control); 1428 int ivlen = 0, icvlen = 4; /* also FCS */ 1429 1430 pkt = alloc_skb(pktsize, GFP_KERNEL); 1431 if (!pkt) 1432 goto report; 1433 1434 skb_put_data(pkt, pktdata, hdrlen); 1435 pktdata += hdrlen; 1436 pktsize -= hdrlen; 1437 1438 if (ieee80211_has_protected(hdr->frame_control)) { 1439 /* 1440 * This is unlocked and using gtk_i(c)vlen, 1441 * but since everything is under RTNL still 1442 * that's not really a problem - changing 1443 * it would be difficult. 1444 */ 1445 if (is_multicast_ether_addr(hdr->addr1)) { 1446 ivlen = mvm->gtk_ivlen; 1447 icvlen += mvm->gtk_icvlen; 1448 } else { 1449 ivlen = mvm->ptk_ivlen; 1450 icvlen += mvm->ptk_icvlen; 1451 } 1452 } 1453 1454 /* if truncated, FCS/ICV is (partially) gone */ 1455 if (truncated >= icvlen) { 1456 icvlen = 0; 1457 truncated -= icvlen; 1458 } else { 1459 icvlen -= truncated; 1460 truncated = 0; 1461 } 1462 1463 pktsize -= ivlen + icvlen; 1464 pktdata += ivlen; 1465 1466 skb_put_data(pkt, pktdata, pktsize); 1467 1468 if (ieee80211_data_to_8023(pkt, vif->addr, vif->type)) 1469 goto report; 1470 wakeup.packet = pkt->data; 1471 wakeup.packet_present_len = pkt->len; 1472 wakeup.packet_len = pkt->len - truncated; 1473 wakeup.packet_80211 = false; 1474 } else { 1475 int fcslen = 4; 1476 1477 if (truncated >= 4) { 1478 truncated -= 4; 1479 fcslen = 0; 1480 } else { 1481 fcslen -= truncated; 1482 truncated = 0; 1483 } 1484 pktsize -= fcslen; 1485 wakeup.packet = status->wake_packet; 1486 wakeup.packet_present_len = pktsize; 1487 wakeup.packet_len = pktlen - truncated; 1488 wakeup.packet_80211 = true; 1489 } 1490 } 1491 1492 report: 1493 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); 1494 kfree_skb(pkt); 1495 } 1496 1497 static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc, 1498 struct ieee80211_key_seq *seq) 1499 { 1500 u64 pn; 1501 1502 pn = le64_to_cpu(sc->pn); 1503 seq->ccmp.pn[0] = pn >> 40; 1504 seq->ccmp.pn[1] = pn >> 32; 1505 seq->ccmp.pn[2] = pn >> 24; 1506 seq->ccmp.pn[3] = pn >> 16; 1507 seq->ccmp.pn[4] = pn >> 8; 1508 seq->ccmp.pn[5] = pn; 1509 } 1510 1511 static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc, 1512 struct ieee80211_key_seq *seq) 1513 { 1514 seq->tkip.iv32 = le32_to_cpu(sc->iv32); 1515 seq->tkip.iv16 = le16_to_cpu(sc->iv16); 1516 } 1517 1518 static void iwl_mvm_set_aes_rx_seq(struct iwl_mvm *mvm, struct aes_sc *scs, 1519 struct ieee80211_sta *sta, 1520 struct ieee80211_key_conf *key) 1521 { 1522 int tid; 1523 1524 BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS); 1525 1526 if (sta && iwl_mvm_has_new_rx_api(mvm)) { 1527 struct iwl_mvm_sta *mvmsta; 1528 struct iwl_mvm_key_pn *ptk_pn; 1529 1530 mvmsta = iwl_mvm_sta_from_mac80211(sta); 1531 1532 ptk_pn = rcu_dereference_protected(mvmsta->ptk_pn[key->keyidx], 1533 lockdep_is_held(&mvm->mutex)); 1534 if (WARN_ON(!ptk_pn)) 1535 return; 1536 1537 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1538 struct ieee80211_key_seq seq = {}; 1539 int i; 1540 1541 iwl_mvm_aes_sc_to_seq(&scs[tid], &seq); 1542 ieee80211_set_key_rx_seq(key, tid, &seq); 1543 for (i = 1; i < mvm->trans->num_rx_queues; i++) 1544 memcpy(ptk_pn->q[i].pn[tid], 1545 seq.ccmp.pn, IEEE80211_CCMP_PN_LEN); 1546 } 1547 } else { 1548 for (tid = 0; tid < IWL_NUM_RSC; tid++) { 1549 struct ieee80211_key_seq seq = {}; 1550 1551 iwl_mvm_aes_sc_to_seq(&scs[tid], &seq); 1552 ieee80211_set_key_rx_seq(key, tid, &seq); 1553 } 1554 } 1555 } 1556 1557 static void iwl_mvm_set_tkip_rx_seq(struct tkip_sc *scs, 1558 struct ieee80211_key_conf *key) 1559 { 1560 int tid; 1561 1562 BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS); 1563 1564 for (tid = 0; tid < IWL_NUM_RSC; tid++) { 1565 struct ieee80211_key_seq seq = {}; 1566 1567 iwl_mvm_tkip_sc_to_seq(&scs[tid], &seq); 1568 ieee80211_set_key_rx_seq(key, tid, &seq); 1569 } 1570 } 1571 1572 static void iwl_mvm_set_key_rx_seq(struct iwl_mvm *mvm, 1573 struct ieee80211_key_conf *key, 1574 struct iwl_wowlan_status *status) 1575 { 1576 union iwl_all_tsc_rsc *rsc = &status->gtk.rsc.all_tsc_rsc; 1577 1578 switch (key->cipher) { 1579 case WLAN_CIPHER_SUITE_CCMP: 1580 iwl_mvm_set_aes_rx_seq(mvm, rsc->aes.multicast_rsc, NULL, key); 1581 break; 1582 case WLAN_CIPHER_SUITE_TKIP: 1583 iwl_mvm_set_tkip_rx_seq(rsc->tkip.multicast_rsc, key); 1584 break; 1585 default: 1586 WARN_ON(1); 1587 } 1588 } 1589 1590 struct iwl_mvm_d3_gtk_iter_data { 1591 struct iwl_mvm *mvm; 1592 struct iwl_wowlan_status *status; 1593 void *last_gtk; 1594 u32 cipher; 1595 bool find_phase, unhandled_cipher; 1596 int num_keys; 1597 }; 1598 1599 static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw, 1600 struct ieee80211_vif *vif, 1601 struct ieee80211_sta *sta, 1602 struct ieee80211_key_conf *key, 1603 void *_data) 1604 { 1605 struct iwl_mvm_d3_gtk_iter_data *data = _data; 1606 1607 if (data->unhandled_cipher) 1608 return; 1609 1610 switch (key->cipher) { 1611 case WLAN_CIPHER_SUITE_WEP40: 1612 case WLAN_CIPHER_SUITE_WEP104: 1613 /* ignore WEP completely, nothing to do */ 1614 return; 1615 case WLAN_CIPHER_SUITE_CCMP: 1616 case WLAN_CIPHER_SUITE_TKIP: 1617 /* we support these */ 1618 break; 1619 default: 1620 /* everything else (even CMAC for MFP) - disconnect from AP */ 1621 data->unhandled_cipher = true; 1622 return; 1623 } 1624 1625 data->num_keys++; 1626 1627 /* 1628 * pairwise key - update sequence counters only; 1629 * note that this assumes no TDLS sessions are active 1630 */ 1631 if (sta) { 1632 struct ieee80211_key_seq seq = {}; 1633 union iwl_all_tsc_rsc *sc = &data->status->gtk.rsc.all_tsc_rsc; 1634 1635 if (data->find_phase) 1636 return; 1637 1638 switch (key->cipher) { 1639 case WLAN_CIPHER_SUITE_CCMP: 1640 iwl_mvm_set_aes_rx_seq(data->mvm, sc->aes.unicast_rsc, 1641 sta, key); 1642 atomic64_set(&key->tx_pn, le64_to_cpu(sc->aes.tsc.pn)); 1643 break; 1644 case WLAN_CIPHER_SUITE_TKIP: 1645 iwl_mvm_tkip_sc_to_seq(&sc->tkip.tsc, &seq); 1646 iwl_mvm_set_tkip_rx_seq(sc->tkip.unicast_rsc, key); 1647 atomic64_set(&key->tx_pn, 1648 (u64)seq.tkip.iv16 | 1649 ((u64)seq.tkip.iv32 << 16)); 1650 break; 1651 } 1652 1653 /* that's it for this key */ 1654 return; 1655 } 1656 1657 if (data->find_phase) { 1658 data->last_gtk = key; 1659 data->cipher = key->cipher; 1660 return; 1661 } 1662 1663 if (data->status->num_of_gtk_rekeys) 1664 ieee80211_remove_key(key); 1665 else if (data->last_gtk == key) 1666 iwl_mvm_set_key_rx_seq(data->mvm, key, data->status); 1667 } 1668 1669 static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm, 1670 struct ieee80211_vif *vif, 1671 struct iwl_wowlan_status *status) 1672 { 1673 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1674 struct iwl_mvm_d3_gtk_iter_data gtkdata = { 1675 .mvm = mvm, 1676 .status = status, 1677 }; 1678 u32 disconnection_reasons = 1679 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 1680 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH; 1681 1682 if (!status || !vif->bss_conf.bssid) 1683 return false; 1684 1685 if (le32_to_cpu(status->wakeup_reasons) & disconnection_reasons) 1686 return false; 1687 1688 /* find last GTK that we used initially, if any */ 1689 gtkdata.find_phase = true; 1690 ieee80211_iter_keys(mvm->hw, vif, 1691 iwl_mvm_d3_update_keys, >kdata); 1692 /* not trying to keep connections with MFP/unhandled ciphers */ 1693 if (gtkdata.unhandled_cipher) 1694 return false; 1695 if (!gtkdata.num_keys) 1696 goto out; 1697 if (!gtkdata.last_gtk) 1698 return false; 1699 1700 /* 1701 * invalidate all other GTKs that might still exist and update 1702 * the one that we used 1703 */ 1704 gtkdata.find_phase = false; 1705 ieee80211_iter_keys(mvm->hw, vif, 1706 iwl_mvm_d3_update_keys, >kdata); 1707 1708 if (status->num_of_gtk_rekeys) { 1709 struct ieee80211_key_conf *key; 1710 struct { 1711 struct ieee80211_key_conf conf; 1712 u8 key[32]; 1713 } conf = { 1714 .conf.cipher = gtkdata.cipher, 1715 .conf.keyidx = status->gtk.key_index, 1716 }; 1717 1718 switch (gtkdata.cipher) { 1719 case WLAN_CIPHER_SUITE_CCMP: 1720 conf.conf.keylen = WLAN_KEY_LEN_CCMP; 1721 memcpy(conf.conf.key, status->gtk.decrypt_key, 1722 WLAN_KEY_LEN_CCMP); 1723 break; 1724 case WLAN_CIPHER_SUITE_TKIP: 1725 conf.conf.keylen = WLAN_KEY_LEN_TKIP; 1726 memcpy(conf.conf.key, status->gtk.decrypt_key, 16); 1727 /* leave TX MIC key zeroed, we don't use it anyway */ 1728 memcpy(conf.conf.key + 1729 NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 1730 status->gtk.tkip_mic_key, 8); 1731 break; 1732 } 1733 1734 key = ieee80211_gtk_rekey_add(vif, &conf.conf); 1735 if (IS_ERR(key)) 1736 return false; 1737 iwl_mvm_set_key_rx_seq(mvm, key, status); 1738 } 1739 1740 if (status->num_of_gtk_rekeys) { 1741 __be64 replay_ctr = 1742 cpu_to_be64(le64_to_cpu(status->replay_ctr)); 1743 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid, 1744 (void *)&replay_ctr, GFP_KERNEL); 1745 } 1746 1747 out: 1748 mvmvif->seqno_valid = true; 1749 /* +0x10 because the set API expects next-to-use, not last-used */ 1750 mvmvif->seqno = le16_to_cpu(status->non_qos_seq_ctr) + 0x10; 1751 1752 return true; 1753 } 1754 1755 static struct iwl_wowlan_status * 1756 iwl_mvm_get_wakeup_status(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1757 { 1758 u32 base = mvm->error_event_table[0]; 1759 struct error_table_start { 1760 /* cf. struct iwl_error_event_table */ 1761 u32 valid; 1762 u32 error_id; 1763 } err_info; 1764 struct iwl_host_cmd cmd = { 1765 .id = WOWLAN_GET_STATUSES, 1766 .flags = CMD_WANT_SKB, 1767 }; 1768 struct iwl_wowlan_status *status, *fw_status; 1769 int ret, len, status_size; 1770 1771 iwl_trans_read_mem_bytes(mvm->trans, base, 1772 &err_info, sizeof(err_info)); 1773 1774 if (err_info.valid) { 1775 IWL_INFO(mvm, "error table is valid (%d) with error (%d)\n", 1776 err_info.valid, err_info.error_id); 1777 if (err_info.error_id == RF_KILL_INDICATOR_FOR_WOWLAN) { 1778 struct cfg80211_wowlan_wakeup wakeup = { 1779 .rfkill_release = true, 1780 }; 1781 ieee80211_report_wowlan_wakeup(vif, &wakeup, 1782 GFP_KERNEL); 1783 } 1784 return ERR_PTR(-EIO); 1785 } 1786 1787 /* only for tracing for now */ 1788 ret = iwl_mvm_send_cmd_pdu(mvm, OFFLOADS_QUERY_CMD, 0, 0, NULL); 1789 if (ret) 1790 IWL_ERR(mvm, "failed to query offload statistics (%d)\n", ret); 1791 1792 ret = iwl_mvm_send_cmd(mvm, &cmd); 1793 if (ret) { 1794 IWL_ERR(mvm, "failed to query status (%d)\n", ret); 1795 return ERR_PTR(ret); 1796 } 1797 1798 status_size = sizeof(*fw_status); 1799 1800 len = iwl_rx_packet_payload_len(cmd.resp_pkt); 1801 if (len < status_size) { 1802 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); 1803 fw_status = ERR_PTR(-EIO); 1804 goto out_free_resp; 1805 } 1806 1807 status = (void *)cmd.resp_pkt->data; 1808 if (len != (status_size + 1809 ALIGN(le32_to_cpu(status->wake_packet_bufsize), 4))) { 1810 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); 1811 fw_status = ERR_PTR(-EIO); 1812 goto out_free_resp; 1813 } 1814 1815 fw_status = kmemdup(status, len, GFP_KERNEL); 1816 1817 out_free_resp: 1818 iwl_free_resp(&cmd); 1819 return fw_status; 1820 } 1821 1822 /* releases the MVM mutex */ 1823 static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm, 1824 struct ieee80211_vif *vif) 1825 { 1826 struct iwl_wowlan_status_data status; 1827 struct iwl_wowlan_status *fw_status; 1828 int i; 1829 bool keep; 1830 struct iwl_mvm_sta *mvm_ap_sta; 1831 1832 fw_status = iwl_mvm_get_wakeup_status(mvm, vif); 1833 if (IS_ERR_OR_NULL(fw_status)) 1834 goto out_unlock; 1835 1836 status.pattern_number = le16_to_cpu(fw_status->pattern_number); 1837 for (i = 0; i < 8; i++) 1838 status.qos_seq_ctr[i] = 1839 le16_to_cpu(fw_status->qos_seq_ctr[i]); 1840 status.wakeup_reasons = le32_to_cpu(fw_status->wakeup_reasons); 1841 status.wake_packet_length = 1842 le32_to_cpu(fw_status->wake_packet_length); 1843 status.wake_packet_bufsize = 1844 le32_to_cpu(fw_status->wake_packet_bufsize); 1845 status.wake_packet = fw_status->wake_packet; 1846 1847 /* still at hard-coded place 0 for D3 image */ 1848 mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, 0); 1849 if (!mvm_ap_sta) 1850 goto out_free; 1851 1852 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1853 u16 seq = status.qos_seq_ctr[i]; 1854 /* firmware stores last-used value, we store next value */ 1855 seq += 0x10; 1856 mvm_ap_sta->tid_data[i].seq_number = seq; 1857 } 1858 1859 /* now we have all the data we need, unlock to avoid mac80211 issues */ 1860 mutex_unlock(&mvm->mutex); 1861 1862 iwl_mvm_report_wakeup_reasons(mvm, vif, &status); 1863 1864 keep = iwl_mvm_setup_connection_keep(mvm, vif, fw_status); 1865 1866 kfree(fw_status); 1867 return keep; 1868 1869 out_free: 1870 kfree(fw_status); 1871 out_unlock: 1872 mutex_unlock(&mvm->mutex); 1873 return false; 1874 } 1875 1876 void iwl_mvm_d0i3_update_keys(struct iwl_mvm *mvm, 1877 struct ieee80211_vif *vif, 1878 struct iwl_wowlan_status *status) 1879 { 1880 struct iwl_mvm_d3_gtk_iter_data gtkdata = { 1881 .mvm = mvm, 1882 .status = status, 1883 }; 1884 1885 /* 1886 * rekey handling requires taking locks that can't be taken now. 1887 * however, d0i3 doesn't offload rekey, so we're fine. 1888 */ 1889 if (WARN_ON_ONCE(status->num_of_gtk_rekeys)) 1890 return; 1891 1892 /* find last GTK that we used initially, if any */ 1893 gtkdata.find_phase = true; 1894 iwl_mvm_iter_d0i3_ap_keys(mvm, vif, iwl_mvm_d3_update_keys, >kdata); 1895 1896 gtkdata.find_phase = false; 1897 iwl_mvm_iter_d0i3_ap_keys(mvm, vif, iwl_mvm_d3_update_keys, >kdata); 1898 } 1899 1900 struct iwl_mvm_nd_query_results { 1901 u32 matched_profiles; 1902 struct iwl_scan_offload_profile_match matches[IWL_SCAN_MAX_PROFILES]; 1903 }; 1904 1905 static int 1906 iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm, 1907 struct iwl_mvm_nd_query_results *results) 1908 { 1909 struct iwl_scan_offload_profiles_query *query; 1910 struct iwl_host_cmd cmd = { 1911 .id = SCAN_OFFLOAD_PROFILES_QUERY_CMD, 1912 .flags = CMD_WANT_SKB, 1913 }; 1914 int ret, len; 1915 1916 ret = iwl_mvm_send_cmd(mvm, &cmd); 1917 if (ret) { 1918 IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret); 1919 return ret; 1920 } 1921 1922 len = iwl_rx_packet_payload_len(cmd.resp_pkt); 1923 if (len < sizeof(*query)) { 1924 IWL_ERR(mvm, "Invalid scan offload profiles query response!\n"); 1925 ret = -EIO; 1926 goto out_free_resp; 1927 } 1928 1929 query = (void *)cmd.resp_pkt->data; 1930 1931 results->matched_profiles = le32_to_cpu(query->matched_profiles); 1932 memcpy(results->matches, query->matches, sizeof(results->matches)); 1933 1934 #ifdef CONFIG_IWLWIFI_DEBUGFS 1935 mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done); 1936 #endif 1937 1938 out_free_resp: 1939 iwl_free_resp(&cmd); 1940 return ret; 1941 } 1942 1943 static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm, 1944 struct ieee80211_vif *vif) 1945 { 1946 struct cfg80211_wowlan_nd_info *net_detect = NULL; 1947 struct cfg80211_wowlan_wakeup wakeup = { 1948 .pattern_idx = -1, 1949 }; 1950 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; 1951 struct iwl_mvm_nd_query_results query; 1952 struct iwl_wowlan_status *fw_status; 1953 unsigned long matched_profiles; 1954 u32 reasons = 0; 1955 int i, j, n_matches, ret; 1956 1957 fw_status = iwl_mvm_get_wakeup_status(mvm, vif); 1958 if (!IS_ERR_OR_NULL(fw_status)) { 1959 reasons = le32_to_cpu(fw_status->wakeup_reasons); 1960 kfree(fw_status); 1961 } 1962 1963 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 1964 wakeup.rfkill_release = true; 1965 1966 if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) 1967 goto out; 1968 1969 ret = iwl_mvm_netdetect_query_results(mvm, &query); 1970 if (ret || !query.matched_profiles) { 1971 wakeup_report = NULL; 1972 goto out; 1973 } 1974 1975 matched_profiles = query.matched_profiles; 1976 if (mvm->n_nd_match_sets) { 1977 n_matches = hweight_long(matched_profiles); 1978 } else { 1979 IWL_ERR(mvm, "no net detect match information available\n"); 1980 n_matches = 0; 1981 } 1982 1983 net_detect = kzalloc(sizeof(*net_detect) + 1984 (n_matches * sizeof(net_detect->matches[0])), 1985 GFP_KERNEL); 1986 if (!net_detect || !n_matches) 1987 goto out_report_nd; 1988 1989 for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) { 1990 struct iwl_scan_offload_profile_match *fw_match; 1991 struct cfg80211_wowlan_nd_match *match; 1992 int idx, n_channels = 0; 1993 1994 fw_match = &query.matches[i]; 1995 1996 for (j = 0; j < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; j++) 1997 n_channels += hweight8(fw_match->matching_channels[j]); 1998 1999 match = kzalloc(sizeof(*match) + 2000 (n_channels * sizeof(*match->channels)), 2001 GFP_KERNEL); 2002 if (!match) 2003 goto out_report_nd; 2004 2005 net_detect->matches[net_detect->n_matches++] = match; 2006 2007 /* We inverted the order of the SSIDs in the scan 2008 * request, so invert the index here. 2009 */ 2010 idx = mvm->n_nd_match_sets - i - 1; 2011 match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len; 2012 memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid, 2013 match->ssid.ssid_len); 2014 2015 if (mvm->n_nd_channels < n_channels) 2016 continue; 2017 2018 for (j = 0; j < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; j++) 2019 if (fw_match->matching_channels[j / 8] & (BIT(j % 8))) 2020 match->channels[match->n_channels++] = 2021 mvm->nd_channels[j]->center_freq; 2022 } 2023 2024 out_report_nd: 2025 wakeup.net_detect = net_detect; 2026 out: 2027 iwl_mvm_free_nd(mvm); 2028 2029 mutex_unlock(&mvm->mutex); 2030 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); 2031 2032 if (net_detect) { 2033 for (i = 0; i < net_detect->n_matches; i++) 2034 kfree(net_detect->matches[i]); 2035 kfree(net_detect); 2036 } 2037 } 2038 2039 static void iwl_mvm_read_d3_sram(struct iwl_mvm *mvm) 2040 { 2041 #ifdef CONFIG_IWLWIFI_DEBUGFS 2042 const struct fw_img *img = &mvm->fw->img[IWL_UCODE_WOWLAN]; 2043 u32 len = img->sec[IWL_UCODE_SECTION_DATA].len; 2044 u32 offs = img->sec[IWL_UCODE_SECTION_DATA].offset; 2045 2046 if (!mvm->store_d3_resume_sram) 2047 return; 2048 2049 if (!mvm->d3_resume_sram) { 2050 mvm->d3_resume_sram = kzalloc(len, GFP_KERNEL); 2051 if (!mvm->d3_resume_sram) 2052 return; 2053 } 2054 2055 iwl_trans_read_mem_bytes(mvm->trans, offs, mvm->d3_resume_sram, len); 2056 #endif 2057 } 2058 2059 static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac, 2060 struct ieee80211_vif *vif) 2061 { 2062 /* skip the one we keep connection on */ 2063 if (data == vif) 2064 return; 2065 2066 if (vif->type == NL80211_IFTYPE_STATION) 2067 ieee80211_resume_disconnect(vif); 2068 } 2069 2070 static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test) 2071 { 2072 struct ieee80211_vif *vif = NULL; 2073 int ret = 1; 2074 enum iwl_d3_status d3_status; 2075 bool keep = false; 2076 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 2077 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 2078 bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa, 2079 IWL_UCODE_TLV_CAPA_D0I3_END_FIRST); 2080 2081 mutex_lock(&mvm->mutex); 2082 2083 /* get the BSS vif pointer again */ 2084 vif = iwl_mvm_get_bss_vif(mvm); 2085 if (IS_ERR_OR_NULL(vif)) 2086 goto err; 2087 2088 ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, !unified_image); 2089 if (ret) 2090 goto err; 2091 2092 if (d3_status != IWL_D3_STATUS_ALIVE) { 2093 IWL_INFO(mvm, "Device was reset during suspend\n"); 2094 goto err; 2095 } 2096 2097 /* query SRAM first in case we want event logging */ 2098 iwl_mvm_read_d3_sram(mvm); 2099 2100 if (d0i3_first) { 2101 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL); 2102 if (ret < 0) { 2103 IWL_ERR(mvm, "Failed to send D0I3_END_CMD first (%d)\n", 2104 ret); 2105 goto err; 2106 } 2107 } 2108 2109 /* 2110 * Query the current location and source from the D3 firmware so we 2111 * can play it back when we re-intiailize the D0 firmware 2112 */ 2113 iwl_mvm_update_changed_regdom(mvm); 2114 2115 if (!unified_image) 2116 /* Re-configure default SAR profile */ 2117 iwl_mvm_sar_select_profile(mvm, 1, 1); 2118 2119 if (mvm->net_detect) { 2120 /* If this is a non-unified image, we restart the FW, 2121 * so no need to stop the netdetect scan. If that 2122 * fails, continue and try to get the wake-up reasons, 2123 * but trigger a HW restart by keeping a failure code 2124 * in ret. 2125 */ 2126 if (unified_image) 2127 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT, 2128 false); 2129 2130 iwl_mvm_query_netdetect_reasons(mvm, vif); 2131 /* has unlocked the mutex, so skip that */ 2132 goto out; 2133 } else { 2134 keep = iwl_mvm_query_wakeup_reasons(mvm, vif); 2135 #ifdef CONFIG_IWLWIFI_DEBUGFS 2136 if (keep) 2137 mvm->keep_vif = vif; 2138 #endif 2139 /* has unlocked the mutex, so skip that */ 2140 goto out_iterate; 2141 } 2142 2143 err: 2144 iwl_mvm_free_nd(mvm); 2145 mutex_unlock(&mvm->mutex); 2146 2147 out_iterate: 2148 if (!test) 2149 ieee80211_iterate_active_interfaces_rtnl(mvm->hw, 2150 IEEE80211_IFACE_ITER_NORMAL, 2151 iwl_mvm_d3_disconnect_iter, keep ? vif : NULL); 2152 2153 out: 2154 /* no need to reset the device in unified images, if successful */ 2155 if (unified_image && !ret) { 2156 /* nothing else to do if we already sent D0I3_END_CMD */ 2157 if (d0i3_first) 2158 return 0; 2159 2160 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL); 2161 if (!ret) 2162 return 0; 2163 } 2164 2165 /* 2166 * Reconfigure the device in one of the following cases: 2167 * 1. We are not using a unified image 2168 * 2. We are using a unified image but had an error while exiting D3 2169 */ 2170 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 2171 set_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status); 2172 /* 2173 * When switching images we return 1, which causes mac80211 2174 * to do a reconfig with IEEE80211_RECONFIG_TYPE_RESTART. 2175 * This type of reconfig calls iwl_mvm_restart_complete(), 2176 * where we unref the IWL_MVM_REF_UCODE_DOWN, so we need 2177 * to take the reference here. 2178 */ 2179 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN); 2180 2181 return 1; 2182 } 2183 2184 static int iwl_mvm_resume_d3(struct iwl_mvm *mvm) 2185 { 2186 iwl_trans_resume(mvm->trans); 2187 2188 return __iwl_mvm_resume(mvm, false); 2189 } 2190 2191 static int iwl_mvm_resume_d0i3(struct iwl_mvm *mvm) 2192 { 2193 bool exit_now; 2194 enum iwl_d3_status d3_status; 2195 struct iwl_trans *trans = mvm->trans; 2196 2197 iwl_trans_d3_resume(trans, &d3_status, false, false); 2198 2199 /* 2200 * make sure to clear D0I3_DEFER_WAKEUP before 2201 * calling iwl_trans_resume(), which might wait 2202 * for d0i3 exit completion. 2203 */ 2204 mutex_lock(&mvm->d0i3_suspend_mutex); 2205 __clear_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags); 2206 exit_now = __test_and_clear_bit(D0I3_PENDING_WAKEUP, 2207 &mvm->d0i3_suspend_flags); 2208 mutex_unlock(&mvm->d0i3_suspend_mutex); 2209 if (exit_now) { 2210 IWL_DEBUG_RPM(mvm, "Run deferred d0i3 exit\n"); 2211 _iwl_mvm_exit_d0i3(mvm); 2212 } 2213 2214 iwl_trans_resume(trans); 2215 2216 if (iwl_mvm_enter_d0i3_on_suspend(mvm)) { 2217 int ret = iwl_mvm_exit_d0i3(mvm->hw->priv); 2218 2219 if (ret) 2220 return ret; 2221 /* 2222 * d0i3 exit will be deferred until reconfig_complete. 2223 * make sure there we are out of d0i3. 2224 */ 2225 } 2226 return 0; 2227 } 2228 2229 int iwl_mvm_resume(struct ieee80211_hw *hw) 2230 { 2231 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2232 int ret; 2233 2234 if (mvm->trans->system_pm_mode == IWL_PLAT_PM_MODE_D0I3) 2235 ret = iwl_mvm_resume_d0i3(mvm); 2236 else 2237 ret = iwl_mvm_resume_d3(mvm); 2238 2239 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED; 2240 2241 return ret; 2242 } 2243 2244 void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled) 2245 { 2246 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2247 2248 device_set_wakeup_enable(mvm->trans->dev, enabled); 2249 } 2250 2251 #ifdef CONFIG_IWLWIFI_DEBUGFS 2252 static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file) 2253 { 2254 struct iwl_mvm *mvm = inode->i_private; 2255 int err; 2256 2257 if (mvm->d3_test_active) 2258 return -EBUSY; 2259 2260 file->private_data = inode->i_private; 2261 2262 ieee80211_stop_queues(mvm->hw); 2263 synchronize_net(); 2264 2265 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_D3; 2266 2267 /* start pseudo D3 */ 2268 rtnl_lock(); 2269 err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true); 2270 rtnl_unlock(); 2271 if (err > 0) 2272 err = -EINVAL; 2273 if (err) { 2274 ieee80211_wake_queues(mvm->hw); 2275 return err; 2276 } 2277 mvm->d3_test_active = true; 2278 mvm->keep_vif = NULL; 2279 return 0; 2280 } 2281 2282 static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf, 2283 size_t count, loff_t *ppos) 2284 { 2285 struct iwl_mvm *mvm = file->private_data; 2286 u32 pme_asserted; 2287 2288 while (true) { 2289 /* read pme_ptr if available */ 2290 if (mvm->d3_test_pme_ptr) { 2291 pme_asserted = iwl_trans_read_mem32(mvm->trans, 2292 mvm->d3_test_pme_ptr); 2293 if (pme_asserted) 2294 break; 2295 } 2296 2297 if (msleep_interruptible(100)) 2298 break; 2299 } 2300 2301 return 0; 2302 } 2303 2304 static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac, 2305 struct ieee80211_vif *vif) 2306 { 2307 /* skip the one we keep connection on */ 2308 if (_data == vif) 2309 return; 2310 2311 if (vif->type == NL80211_IFTYPE_STATION) 2312 ieee80211_connection_loss(vif); 2313 } 2314 2315 static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file) 2316 { 2317 struct iwl_mvm *mvm = inode->i_private; 2318 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 2319 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 2320 2321 mvm->d3_test_active = false; 2322 2323 rtnl_lock(); 2324 __iwl_mvm_resume(mvm, true); 2325 rtnl_unlock(); 2326 2327 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED; 2328 2329 iwl_abort_notification_waits(&mvm->notif_wait); 2330 if (!unified_image) { 2331 int remaining_time = 10; 2332 2333 ieee80211_restart_hw(mvm->hw); 2334 2335 /* wait for restart and disconnect all interfaces */ 2336 while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 2337 remaining_time > 0) { 2338 remaining_time--; 2339 msleep(1000); 2340 } 2341 2342 if (remaining_time == 0) 2343 IWL_ERR(mvm, "Timed out waiting for HW restart!\n"); 2344 } 2345 2346 ieee80211_iterate_active_interfaces_atomic( 2347 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 2348 iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif); 2349 2350 ieee80211_wake_queues(mvm->hw); 2351 2352 return 0; 2353 } 2354 2355 const struct file_operations iwl_dbgfs_d3_test_ops = { 2356 .llseek = no_llseek, 2357 .open = iwl_mvm_d3_test_open, 2358 .read = iwl_mvm_d3_test_read, 2359 .release = iwl_mvm_d3_test_release, 2360 }; 2361 #endif 2362