d3.c revision e5e7aa8e2561019fb3f417041d50e1c0df8f5e42
1/****************************************************************************** 2 * 3 * This file is provided under a dual BSD/GPLv2 license. When using or 4 * redistributing this file, you may do so under either license. 5 * 6 * GPL LICENSE SUMMARY 7 * 8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of version 2 of the GNU General Public License as 12 * published by the Free Software Foundation. 13 * 14 * This program is distributed in the hope that it will be useful, but 15 * WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 17 * General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, 22 * USA 23 * 24 * The full GNU General Public License is included in this distribution 25 * in the file called COPYING. 26 * 27 * Contact Information: 28 * Intel Linux Wireless <ilw@linux.intel.com> 29 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 30 * 31 * BSD LICENSE 32 * 33 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 34 * All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 40 * * Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * * Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in 44 * the documentation and/or other materials provided with the 45 * distribution. 46 * * Neither the name Intel Corporation nor the names of its 47 * contributors may be used to endorse or promote products derived 48 * from this software without specific prior written permission. 49 * 50 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 51 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 52 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 53 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 54 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 55 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 56 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 57 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 58 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 59 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 60 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 61 * 62 *****************************************************************************/ 63 64#include <linux/etherdevice.h> 65#include <linux/ip.h> 66#include <linux/fs.h> 67#include <net/cfg80211.h> 68#include <net/ipv6.h> 69#include <net/tcp.h> 70#include <net/addrconf.h> 71#include "iwl-modparams.h" 72#include "fw-api.h" 73#include "mvm.h" 74 75void iwl_mvm_set_rekey_data(struct ieee80211_hw *hw, 76 struct ieee80211_vif *vif, 77 struct cfg80211_gtk_rekey_data *data) 78{ 79 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 80 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 81 82 if (iwlwifi_mod_params.sw_crypto) 83 return; 84 85 mutex_lock(&mvm->mutex); 86 87 memcpy(mvmvif->rekey_data.kek, data->kek, NL80211_KEK_LEN); 88 memcpy(mvmvif->rekey_data.kck, data->kck, NL80211_KCK_LEN); 89 mvmvif->rekey_data.replay_ctr = 90 cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr)); 91 mvmvif->rekey_data.valid = true; 92 93 mutex_unlock(&mvm->mutex); 94} 95 96#if IS_ENABLED(CONFIG_IPV6) 97void iwl_mvm_ipv6_addr_change(struct ieee80211_hw *hw, 98 struct ieee80211_vif *vif, 99 struct inet6_dev *idev) 100{ 101 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 102 struct inet6_ifaddr *ifa; 103 int idx = 0; 104 105 read_lock_bh(&idev->lock); 106 list_for_each_entry(ifa, &idev->addr_list, if_list) { 107 mvmvif->target_ipv6_addrs[idx] = ifa->addr; 108 idx++; 109 if (idx >= IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_MAX) 110 break; 111 } 112 read_unlock_bh(&idev->lock); 113 114 mvmvif->num_target_ipv6_addrs = idx; 115} 116#endif 117 118void iwl_mvm_set_default_unicast_key(struct ieee80211_hw *hw, 119 struct ieee80211_vif *vif, int idx) 120{ 121 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 122 123 mvmvif->tx_key_idx = idx; 124} 125 126static void iwl_mvm_convert_p1k(u16 *p1k, __le16 *out) 127{ 128 int i; 129 130 for (i = 0; i < IWL_P1K_SIZE; i++) 131 out[i] = cpu_to_le16(p1k[i]); 132} 133 134struct wowlan_key_data { 135 struct iwl_wowlan_rsc_tsc_params_cmd *rsc_tsc; 136 struct iwl_wowlan_tkip_params_cmd *tkip; 137 bool error, use_rsc_tsc, use_tkip; 138 int wep_key_idx; 139}; 140 141static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw, 142 struct ieee80211_vif *vif, 143 struct ieee80211_sta *sta, 144 struct ieee80211_key_conf *key, 145 void *_data) 146{ 147 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 148 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 149 struct wowlan_key_data *data = _data; 150 struct aes_sc *aes_sc, *aes_tx_sc = NULL; 151 struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL; 152 struct iwl_p1k_cache *rx_p1ks; 153 u8 *rx_mic_key; 154 struct ieee80211_key_seq seq; 155 u32 cur_rx_iv32 = 0; 156 u16 p1k[IWL_P1K_SIZE]; 157 int ret, i; 158 159 mutex_lock(&mvm->mutex); 160 161 switch (key->cipher) { 162 case WLAN_CIPHER_SUITE_WEP40: 163 case WLAN_CIPHER_SUITE_WEP104: { /* hack it for now */ 164 struct { 165 struct iwl_mvm_wep_key_cmd wep_key_cmd; 166 struct iwl_mvm_wep_key wep_key; 167 } __packed wkc = { 168 .wep_key_cmd.mac_id_n_color = 169 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 170 mvmvif->color)), 171 .wep_key_cmd.num_keys = 1, 172 /* firmware sets STA_KEY_FLG_WEP_13BYTES */ 173 .wep_key_cmd.decryption_type = STA_KEY_FLG_WEP, 174 .wep_key.key_index = key->keyidx, 175 .wep_key.key_size = key->keylen, 176 }; 177 178 /* 179 * This will fail -- the key functions don't set support 180 * pairwise WEP keys. However, that's better than silently 181 * failing WoWLAN. Or maybe not? 182 */ 183 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) 184 break; 185 186 memcpy(&wkc.wep_key.key[3], key->key, key->keylen); 187 if (key->keyidx == mvmvif->tx_key_idx) { 188 /* TX key must be at offset 0 */ 189 wkc.wep_key.key_offset = 0; 190 } else { 191 /* others start at 1 */ 192 data->wep_key_idx++; 193 wkc.wep_key.key_offset = data->wep_key_idx; 194 } 195 196 ret = iwl_mvm_send_cmd_pdu(mvm, WEP_KEY, CMD_SYNC, 197 sizeof(wkc), &wkc); 198 data->error = ret != 0; 199 200 mvm->ptk_ivlen = key->iv_len; 201 mvm->ptk_icvlen = key->icv_len; 202 mvm->gtk_ivlen = key->iv_len; 203 mvm->gtk_icvlen = key->icv_len; 204 205 /* don't upload key again */ 206 goto out_unlock; 207 } 208 default: 209 data->error = true; 210 goto out_unlock; 211 case WLAN_CIPHER_SUITE_AES_CMAC: 212 /* 213 * Ignore CMAC keys -- the WoWLAN firmware doesn't support them 214 * but we also shouldn't abort suspend due to that. It does have 215 * support for the IGTK key renewal, but doesn't really use the 216 * IGTK for anything. This means we could spuriously wake up or 217 * be deauthenticated, but that was considered acceptable. 218 */ 219 goto out_unlock; 220 case WLAN_CIPHER_SUITE_TKIP: 221 if (sta) { 222 tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc; 223 tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc; 224 225 rx_p1ks = data->tkip->rx_uni; 226 227 ieee80211_get_key_tx_seq(key, &seq); 228 tkip_tx_sc->iv16 = cpu_to_le16(seq.tkip.iv16); 229 tkip_tx_sc->iv32 = cpu_to_le32(seq.tkip.iv32); 230 231 ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k); 232 iwl_mvm_convert_p1k(p1k, data->tkip->tx.p1k); 233 234 memcpy(data->tkip->mic_keys.tx, 235 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], 236 IWL_MIC_KEY_SIZE); 237 238 rx_mic_key = data->tkip->mic_keys.rx_unicast; 239 } else { 240 tkip_sc = 241 data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc; 242 rx_p1ks = data->tkip->rx_multi; 243 rx_mic_key = data->tkip->mic_keys.rx_mcast; 244 } 245 246 /* 247 * For non-QoS this relies on the fact that both the uCode and 248 * mac80211 use TID 0 (as they need to to avoid replay attacks) 249 * for checking the IV in the frames. 250 */ 251 for (i = 0; i < IWL_NUM_RSC; i++) { 252 ieee80211_get_key_rx_seq(key, i, &seq); 253 tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16); 254 tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32); 255 /* wrapping isn't allowed, AP must rekey */ 256 if (seq.tkip.iv32 > cur_rx_iv32) 257 cur_rx_iv32 = seq.tkip.iv32; 258 } 259 260 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid, 261 cur_rx_iv32, p1k); 262 iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k); 263 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid, 264 cur_rx_iv32 + 1, p1k); 265 iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k); 266 267 memcpy(rx_mic_key, 268 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], 269 IWL_MIC_KEY_SIZE); 270 271 data->use_tkip = true; 272 data->use_rsc_tsc = true; 273 break; 274 case WLAN_CIPHER_SUITE_CCMP: 275 if (sta) { 276 u8 *pn = seq.ccmp.pn; 277 278 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc; 279 aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc; 280 281 ieee80211_get_key_tx_seq(key, &seq); 282 aes_tx_sc->pn = cpu_to_le64((u64)pn[5] | 283 ((u64)pn[4] << 8) | 284 ((u64)pn[3] << 16) | 285 ((u64)pn[2] << 24) | 286 ((u64)pn[1] << 32) | 287 ((u64)pn[0] << 40)); 288 } else { 289 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc; 290 } 291 292 /* 293 * For non-QoS this relies on the fact that both the uCode and 294 * mac80211 use TID 0 for checking the IV in the frames. 295 */ 296 for (i = 0; i < IWL_NUM_RSC; i++) { 297 u8 *pn = seq.ccmp.pn; 298 299 ieee80211_get_key_rx_seq(key, i, &seq); 300 aes_sc->pn = cpu_to_le64((u64)pn[5] | 301 ((u64)pn[4] << 8) | 302 ((u64)pn[3] << 16) | 303 ((u64)pn[2] << 24) | 304 ((u64)pn[1] << 32) | 305 ((u64)pn[0] << 40)); 306 } 307 data->use_rsc_tsc = true; 308 break; 309 } 310 311 /* 312 * The D3 firmware hardcodes the key offset 0 as the key it uses 313 * to transmit packets to the AP, i.e. the PTK. 314 */ 315 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) { 316 key->hw_key_idx = 0; 317 mvm->ptk_ivlen = key->iv_len; 318 mvm->ptk_icvlen = key->icv_len; 319 } else { 320 /* 321 * firmware only supports TSC/RSC for a single key, 322 * so if there are multiple keep overwriting them 323 * with new ones -- this relies on mac80211 doing 324 * list_add_tail(). 325 */ 326 key->hw_key_idx = 1; 327 mvm->gtk_ivlen = key->iv_len; 328 mvm->gtk_icvlen = key->icv_len; 329 } 330 331 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, true); 332 data->error = ret != 0; 333out_unlock: 334 mutex_unlock(&mvm->mutex); 335} 336 337static int iwl_mvm_send_patterns(struct iwl_mvm *mvm, 338 struct cfg80211_wowlan *wowlan) 339{ 340 struct iwl_wowlan_patterns_cmd *pattern_cmd; 341 struct iwl_host_cmd cmd = { 342 .id = WOWLAN_PATTERNS, 343 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 344 .flags = CMD_SYNC, 345 }; 346 int i, err; 347 348 if (!wowlan->n_patterns) 349 return 0; 350 351 cmd.len[0] = sizeof(*pattern_cmd) + 352 wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern); 353 354 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL); 355 if (!pattern_cmd) 356 return -ENOMEM; 357 358 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns); 359 360 for (i = 0; i < wowlan->n_patterns; i++) { 361 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8); 362 363 memcpy(&pattern_cmd->patterns[i].mask, 364 wowlan->patterns[i].mask, mask_len); 365 memcpy(&pattern_cmd->patterns[i].pattern, 366 wowlan->patterns[i].pattern, 367 wowlan->patterns[i].pattern_len); 368 pattern_cmd->patterns[i].mask_size = mask_len; 369 pattern_cmd->patterns[i].pattern_size = 370 wowlan->patterns[i].pattern_len; 371 } 372 373 cmd.data[0] = pattern_cmd; 374 err = iwl_mvm_send_cmd(mvm, &cmd); 375 kfree(pattern_cmd); 376 return err; 377} 378 379static int iwl_mvm_send_proto_offload(struct iwl_mvm *mvm, 380 struct ieee80211_vif *vif) 381{ 382 union { 383 struct iwl_proto_offload_cmd_v1 v1; 384 struct iwl_proto_offload_cmd_v2 v2; 385 struct iwl_proto_offload_cmd_v3_small v3s; 386 struct iwl_proto_offload_cmd_v3_large v3l; 387 } cmd = {}; 388 struct iwl_host_cmd hcmd = { 389 .id = PROT_OFFLOAD_CONFIG_CMD, 390 .flags = CMD_SYNC, 391 .data[0] = &cmd, 392 .dataflags[0] = IWL_HCMD_DFL_DUP, 393 }; 394 struct iwl_proto_offload_cmd_common *common; 395 u32 enabled = 0, size; 396 u32 capa_flags = mvm->fw->ucode_capa.flags; 397#if IS_ENABLED(CONFIG_IPV6) 398 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 399 int i; 400 401 if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL || 402 capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_LARGE) { 403 struct iwl_ns_config *nsc; 404 struct iwl_targ_addr *addrs; 405 int n_nsc, n_addrs; 406 int c; 407 408 if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL) { 409 nsc = cmd.v3s.ns_config; 410 n_nsc = IWL_PROTO_OFFLOAD_NUM_NS_CONFIG_V3S; 411 addrs = cmd.v3s.targ_addrs; 412 n_addrs = IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V3S; 413 } else { 414 nsc = cmd.v3l.ns_config; 415 n_nsc = IWL_PROTO_OFFLOAD_NUM_NS_CONFIG_V3L; 416 addrs = cmd.v3l.targ_addrs; 417 n_addrs = IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V3L; 418 } 419 420 if (mvmvif->num_target_ipv6_addrs) 421 enabled |= IWL_D3_PROTO_OFFLOAD_NS; 422 423 /* 424 * For each address we have (and that will fit) fill a target 425 * address struct and combine for NS offload structs with the 426 * solicited node addresses. 427 */ 428 for (i = 0, c = 0; 429 i < mvmvif->num_target_ipv6_addrs && 430 i < n_addrs && c < n_nsc; i++) { 431 struct in6_addr solicited_addr; 432 int j; 433 434 addrconf_addr_solict_mult(&mvmvif->target_ipv6_addrs[i], 435 &solicited_addr); 436 for (j = 0; j < c; j++) 437 if (ipv6_addr_cmp(&nsc[j].dest_ipv6_addr, 438 &solicited_addr) == 0) 439 break; 440 if (j == c) 441 c++; 442 addrs[i].addr = mvmvif->target_ipv6_addrs[i]; 443 addrs[i].config_num = cpu_to_le32(j); 444 nsc[j].dest_ipv6_addr = solicited_addr; 445 memcpy(nsc[j].target_mac_addr, vif->addr, ETH_ALEN); 446 } 447 448 if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL) 449 cmd.v3s.num_valid_ipv6_addrs = cpu_to_le32(i); 450 else 451 cmd.v3l.num_valid_ipv6_addrs = cpu_to_le32(i); 452 } else if (capa_flags & IWL_UCODE_TLV_FLAGS_D3_6_IPV6_ADDRS) { 453 if (mvmvif->num_target_ipv6_addrs) { 454 enabled |= IWL_D3_PROTO_OFFLOAD_NS; 455 memcpy(cmd.v2.ndp_mac_addr, vif->addr, ETH_ALEN); 456 } 457 458 BUILD_BUG_ON(sizeof(cmd.v2.target_ipv6_addr[0]) != 459 sizeof(mvmvif->target_ipv6_addrs[0])); 460 461 for (i = 0; i < min(mvmvif->num_target_ipv6_addrs, 462 IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V2); i++) 463 memcpy(cmd.v2.target_ipv6_addr[i], 464 &mvmvif->target_ipv6_addrs[i], 465 sizeof(cmd.v2.target_ipv6_addr[i])); 466 } else { 467 if (mvmvif->num_target_ipv6_addrs) { 468 enabled |= IWL_D3_PROTO_OFFLOAD_NS; 469 memcpy(cmd.v1.ndp_mac_addr, vif->addr, ETH_ALEN); 470 } 471 472 BUILD_BUG_ON(sizeof(cmd.v1.target_ipv6_addr[0]) != 473 sizeof(mvmvif->target_ipv6_addrs[0])); 474 475 for (i = 0; i < min(mvmvif->num_target_ipv6_addrs, 476 IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V1); i++) 477 memcpy(cmd.v1.target_ipv6_addr[i], 478 &mvmvif->target_ipv6_addrs[i], 479 sizeof(cmd.v1.target_ipv6_addr[i])); 480 } 481#endif 482 483 if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL) { 484 common = &cmd.v3s.common; 485 size = sizeof(cmd.v3s); 486 } else if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_LARGE) { 487 common = &cmd.v3l.common; 488 size = sizeof(cmd.v3l); 489 } else if (capa_flags & IWL_UCODE_TLV_FLAGS_D3_6_IPV6_ADDRS) { 490 common = &cmd.v2.common; 491 size = sizeof(cmd.v2); 492 } else { 493 common = &cmd.v1.common; 494 size = sizeof(cmd.v1); 495 } 496 497 if (vif->bss_conf.arp_addr_cnt) { 498 enabled |= IWL_D3_PROTO_OFFLOAD_ARP; 499 common->host_ipv4_addr = vif->bss_conf.arp_addr_list[0]; 500 memcpy(common->arp_mac_addr, vif->addr, ETH_ALEN); 501 } 502 503 if (!enabled) 504 return 0; 505 506 common->enabled = cpu_to_le32(enabled); 507 508 hcmd.len[0] = size; 509 return iwl_mvm_send_cmd(mvm, &hcmd); 510} 511 512enum iwl_mvm_tcp_packet_type { 513 MVM_TCP_TX_SYN, 514 MVM_TCP_RX_SYNACK, 515 MVM_TCP_TX_DATA, 516 MVM_TCP_RX_ACK, 517 MVM_TCP_RX_WAKE, 518 MVM_TCP_TX_FIN, 519}; 520 521static __le16 pseudo_hdr_check(int len, __be32 saddr, __be32 daddr) 522{ 523 __sum16 check = tcp_v4_check(len, saddr, daddr, 0); 524 return cpu_to_le16(be16_to_cpu((__force __be16)check)); 525} 526 527static void iwl_mvm_build_tcp_packet(struct ieee80211_vif *vif, 528 struct cfg80211_wowlan_tcp *tcp, 529 void *_pkt, u8 *mask, 530 __le16 *pseudo_hdr_csum, 531 enum iwl_mvm_tcp_packet_type ptype) 532{ 533 struct { 534 struct ethhdr eth; 535 struct iphdr ip; 536 struct tcphdr tcp; 537 u8 data[]; 538 } __packed *pkt = _pkt; 539 u16 ip_tot_len = sizeof(struct iphdr) + sizeof(struct tcphdr); 540 int i; 541 542 pkt->eth.h_proto = cpu_to_be16(ETH_P_IP), 543 pkt->ip.version = 4; 544 pkt->ip.ihl = 5; 545 pkt->ip.protocol = IPPROTO_TCP; 546 547 switch (ptype) { 548 case MVM_TCP_TX_SYN: 549 case MVM_TCP_TX_DATA: 550 case MVM_TCP_TX_FIN: 551 memcpy(pkt->eth.h_dest, tcp->dst_mac, ETH_ALEN); 552 memcpy(pkt->eth.h_source, vif->addr, ETH_ALEN); 553 pkt->ip.ttl = 128; 554 pkt->ip.saddr = tcp->src; 555 pkt->ip.daddr = tcp->dst; 556 pkt->tcp.source = cpu_to_be16(tcp->src_port); 557 pkt->tcp.dest = cpu_to_be16(tcp->dst_port); 558 /* overwritten for TX SYN later */ 559 pkt->tcp.doff = sizeof(struct tcphdr) / 4; 560 pkt->tcp.window = cpu_to_be16(65000); 561 break; 562 case MVM_TCP_RX_SYNACK: 563 case MVM_TCP_RX_ACK: 564 case MVM_TCP_RX_WAKE: 565 memcpy(pkt->eth.h_dest, vif->addr, ETH_ALEN); 566 memcpy(pkt->eth.h_source, tcp->dst_mac, ETH_ALEN); 567 pkt->ip.saddr = tcp->dst; 568 pkt->ip.daddr = tcp->src; 569 pkt->tcp.source = cpu_to_be16(tcp->dst_port); 570 pkt->tcp.dest = cpu_to_be16(tcp->src_port); 571 break; 572 default: 573 WARN_ON(1); 574 return; 575 } 576 577 switch (ptype) { 578 case MVM_TCP_TX_SYN: 579 /* firmware assumes 8 option bytes - 8 NOPs for now */ 580 memset(pkt->data, 0x01, 8); 581 ip_tot_len += 8; 582 pkt->tcp.doff = (sizeof(struct tcphdr) + 8) / 4; 583 pkt->tcp.syn = 1; 584 break; 585 case MVM_TCP_TX_DATA: 586 ip_tot_len += tcp->payload_len; 587 memcpy(pkt->data, tcp->payload, tcp->payload_len); 588 pkt->tcp.psh = 1; 589 pkt->tcp.ack = 1; 590 break; 591 case MVM_TCP_TX_FIN: 592 pkt->tcp.fin = 1; 593 pkt->tcp.ack = 1; 594 break; 595 case MVM_TCP_RX_SYNACK: 596 pkt->tcp.syn = 1; 597 pkt->tcp.ack = 1; 598 break; 599 case MVM_TCP_RX_ACK: 600 pkt->tcp.ack = 1; 601 break; 602 case MVM_TCP_RX_WAKE: 603 ip_tot_len += tcp->wake_len; 604 pkt->tcp.psh = 1; 605 pkt->tcp.ack = 1; 606 memcpy(pkt->data, tcp->wake_data, tcp->wake_len); 607 break; 608 } 609 610 switch (ptype) { 611 case MVM_TCP_TX_SYN: 612 case MVM_TCP_TX_DATA: 613 case MVM_TCP_TX_FIN: 614 pkt->ip.tot_len = cpu_to_be16(ip_tot_len); 615 pkt->ip.check = ip_fast_csum(&pkt->ip, pkt->ip.ihl); 616 break; 617 case MVM_TCP_RX_WAKE: 618 for (i = 0; i < DIV_ROUND_UP(tcp->wake_len, 8); i++) { 619 u8 tmp = tcp->wake_mask[i]; 620 mask[i + 6] |= tmp << 6; 621 if (i + 1 < DIV_ROUND_UP(tcp->wake_len, 8)) 622 mask[i + 7] = tmp >> 2; 623 } 624 /* fall through for ethernet/IP/TCP headers mask */ 625 case MVM_TCP_RX_SYNACK: 626 case MVM_TCP_RX_ACK: 627 mask[0] = 0xff; /* match ethernet */ 628 /* 629 * match ethernet, ip.version, ip.ihl 630 * the ip.ihl half byte is really masked out by firmware 631 */ 632 mask[1] = 0x7f; 633 mask[2] = 0x80; /* match ip.protocol */ 634 mask[3] = 0xfc; /* match ip.saddr, ip.daddr */ 635 mask[4] = 0x3f; /* match ip.daddr, tcp.source, tcp.dest */ 636 mask[5] = 0x80; /* match tcp flags */ 637 /* leave rest (0 or set for MVM_TCP_RX_WAKE) */ 638 break; 639 }; 640 641 *pseudo_hdr_csum = pseudo_hdr_check(ip_tot_len - sizeof(struct iphdr), 642 pkt->ip.saddr, pkt->ip.daddr); 643} 644 645static int iwl_mvm_send_remote_wake_cfg(struct iwl_mvm *mvm, 646 struct ieee80211_vif *vif, 647 struct cfg80211_wowlan_tcp *tcp) 648{ 649 struct iwl_wowlan_remote_wake_config *cfg; 650 struct iwl_host_cmd cmd = { 651 .id = REMOTE_WAKE_CONFIG_CMD, 652 .len = { sizeof(*cfg), }, 653 .dataflags = { IWL_HCMD_DFL_NOCOPY, }, 654 .flags = CMD_SYNC, 655 }; 656 int ret; 657 658 if (!tcp) 659 return 0; 660 661 cfg = kzalloc(sizeof(*cfg), GFP_KERNEL); 662 if (!cfg) 663 return -ENOMEM; 664 cmd.data[0] = cfg; 665 666 cfg->max_syn_retries = 10; 667 cfg->max_data_retries = 10; 668 cfg->tcp_syn_ack_timeout = 1; /* seconds */ 669 cfg->tcp_ack_timeout = 1; /* seconds */ 670 671 /* SYN (TX) */ 672 iwl_mvm_build_tcp_packet( 673 vif, tcp, cfg->syn_tx.data, NULL, 674 &cfg->syn_tx.info.tcp_pseudo_header_checksum, 675 MVM_TCP_TX_SYN); 676 cfg->syn_tx.info.tcp_payload_length = 0; 677 678 /* SYN/ACK (RX) */ 679 iwl_mvm_build_tcp_packet( 680 vif, tcp, cfg->synack_rx.data, cfg->synack_rx.rx_mask, 681 &cfg->synack_rx.info.tcp_pseudo_header_checksum, 682 MVM_TCP_RX_SYNACK); 683 cfg->synack_rx.info.tcp_payload_length = 0; 684 685 /* KEEPALIVE/ACK (TX) */ 686 iwl_mvm_build_tcp_packet( 687 vif, tcp, cfg->keepalive_tx.data, NULL, 688 &cfg->keepalive_tx.info.tcp_pseudo_header_checksum, 689 MVM_TCP_TX_DATA); 690 cfg->keepalive_tx.info.tcp_payload_length = 691 cpu_to_le16(tcp->payload_len); 692 cfg->sequence_number_offset = tcp->payload_seq.offset; 693 /* length must be 0..4, the field is little endian */ 694 cfg->sequence_number_length = tcp->payload_seq.len; 695 cfg->initial_sequence_number = cpu_to_le32(tcp->payload_seq.start); 696 cfg->keepalive_interval = cpu_to_le16(tcp->data_interval); 697 if (tcp->payload_tok.len) { 698 cfg->token_offset = tcp->payload_tok.offset; 699 cfg->token_length = tcp->payload_tok.len; 700 cfg->num_tokens = 701 cpu_to_le16(tcp->tokens_size % tcp->payload_tok.len); 702 memcpy(cfg->tokens, tcp->payload_tok.token_stream, 703 tcp->tokens_size); 704 } else { 705 /* set tokens to max value to almost never run out */ 706 cfg->num_tokens = cpu_to_le16(65535); 707 } 708 709 /* ACK (RX) */ 710 iwl_mvm_build_tcp_packet( 711 vif, tcp, cfg->keepalive_ack_rx.data, 712 cfg->keepalive_ack_rx.rx_mask, 713 &cfg->keepalive_ack_rx.info.tcp_pseudo_header_checksum, 714 MVM_TCP_RX_ACK); 715 cfg->keepalive_ack_rx.info.tcp_payload_length = 0; 716 717 /* WAKEUP (RX) */ 718 iwl_mvm_build_tcp_packet( 719 vif, tcp, cfg->wake_rx.data, cfg->wake_rx.rx_mask, 720 &cfg->wake_rx.info.tcp_pseudo_header_checksum, 721 MVM_TCP_RX_WAKE); 722 cfg->wake_rx.info.tcp_payload_length = 723 cpu_to_le16(tcp->wake_len); 724 725 /* FIN */ 726 iwl_mvm_build_tcp_packet( 727 vif, tcp, cfg->fin_tx.data, NULL, 728 &cfg->fin_tx.info.tcp_pseudo_header_checksum, 729 MVM_TCP_TX_FIN); 730 cfg->fin_tx.info.tcp_payload_length = 0; 731 732 ret = iwl_mvm_send_cmd(mvm, &cmd); 733 kfree(cfg); 734 735 return ret; 736} 737 738struct iwl_d3_iter_data { 739 struct iwl_mvm *mvm; 740 struct ieee80211_vif *vif; 741 bool error; 742}; 743 744static void iwl_mvm_d3_iface_iterator(void *_data, u8 *mac, 745 struct ieee80211_vif *vif) 746{ 747 struct iwl_d3_iter_data *data = _data; 748 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 749 750 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p) 751 return; 752 753 if (mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT) 754 return; 755 756 if (data->vif) { 757 IWL_ERR(data->mvm, "More than one managed interface active!\n"); 758 data->error = true; 759 return; 760 } 761 762 data->vif = vif; 763} 764 765static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 766 struct ieee80211_sta *ap_sta) 767{ 768 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 769 struct ieee80211_chanctx_conf *ctx; 770 u8 chains_static, chains_dynamic; 771 struct cfg80211_chan_def chandef; 772 int ret, i; 773 struct iwl_binding_cmd binding_cmd = {}; 774 struct iwl_time_quota_cmd quota_cmd = {}; 775 u32 status; 776 777 /* add back the PHY */ 778 if (WARN_ON(!mvmvif->phy_ctxt)) 779 return -EINVAL; 780 781 rcu_read_lock(); 782 ctx = rcu_dereference(vif->chanctx_conf); 783 if (WARN_ON(!ctx)) { 784 rcu_read_unlock(); 785 return -EINVAL; 786 } 787 chandef = ctx->def; 788 chains_static = ctx->rx_chains_static; 789 chains_dynamic = ctx->rx_chains_dynamic; 790 rcu_read_unlock(); 791 792 ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt, &chandef, 793 chains_static, chains_dynamic); 794 if (ret) 795 return ret; 796 797 /* add back the MAC */ 798 mvmvif->uploaded = false; 799 800 if (WARN_ON(!vif->bss_conf.assoc)) 801 return -EINVAL; 802 /* hack */ 803 vif->bss_conf.assoc = false; 804 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 805 vif->bss_conf.assoc = true; 806 if (ret) 807 return ret; 808 809 /* add back binding - XXX refactor? */ 810 binding_cmd.id_and_color = 811 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id, 812 mvmvif->phy_ctxt->color)); 813 binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD); 814 binding_cmd.phy = 815 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id, 816 mvmvif->phy_ctxt->color)); 817 binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 818 mvmvif->color)); 819 for (i = 1; i < MAX_MACS_IN_BINDING; i++) 820 binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID); 821 822 status = 0; 823 ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD, 824 sizeof(binding_cmd), &binding_cmd, 825 &status); 826 if (ret) { 827 IWL_ERR(mvm, "Failed to add binding: %d\n", ret); 828 return ret; 829 } 830 831 if (status) { 832 IWL_ERR(mvm, "Binding command failed: %u\n", status); 833 return -EIO; 834 } 835 836 ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false); 837 if (ret) 838 return ret; 839 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], ap_sta); 840 841 ret = iwl_mvm_mac_ctxt_changed(mvm, vif); 842 if (ret) 843 return ret; 844 845 /* and some quota */ 846 quota_cmd.quotas[0].id_and_color = 847 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id, 848 mvmvif->phy_ctxt->color)); 849 quota_cmd.quotas[0].quota = cpu_to_le32(100); 850 quota_cmd.quotas[0].max_duration = cpu_to_le32(1000); 851 852 for (i = 1; i < MAX_BINDINGS; i++) 853 quota_cmd.quotas[i].id_and_color = cpu_to_le32(FW_CTXT_INVALID); 854 855 ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, CMD_SYNC, 856 sizeof(quota_cmd), "a_cmd); 857 if (ret) 858 IWL_ERR(mvm, "Failed to send quota: %d\n", ret); 859 860 return 0; 861} 862 863static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm, 864 struct ieee80211_vif *vif) 865{ 866 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 867 struct iwl_nonqos_seq_query_cmd query_cmd = { 868 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET), 869 .mac_id_n_color = 870 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 871 mvmvif->color)), 872 }; 873 struct iwl_host_cmd cmd = { 874 .id = NON_QOS_TX_COUNTER_CMD, 875 .flags = CMD_SYNC | CMD_WANT_SKB, 876 }; 877 int err; 878 u32 size; 879 880 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_D3_CONTINUITY_API) { 881 cmd.data[0] = &query_cmd; 882 cmd.len[0] = sizeof(query_cmd); 883 } 884 885 err = iwl_mvm_send_cmd(mvm, &cmd); 886 if (err) 887 return err; 888 889 size = iwl_rx_packet_payload_len(cmd.resp_pkt); 890 if (size < sizeof(__le16)) { 891 err = -EINVAL; 892 } else { 893 err = le16_to_cpup((__le16 *)cmd.resp_pkt->data); 894 /* new API returns next, not last-used seqno */ 895 if (mvm->fw->ucode_capa.flags & 896 IWL_UCODE_TLV_FLAGS_D3_CONTINUITY_API) 897 err = (u16) (err - 0x10); 898 } 899 900 iwl_free_resp(&cmd); 901 return err; 902} 903 904void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 905{ 906 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 907 struct iwl_nonqos_seq_query_cmd query_cmd = { 908 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET), 909 .mac_id_n_color = 910 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 911 mvmvif->color)), 912 .value = cpu_to_le16(mvmvif->seqno), 913 }; 914 915 /* return if called during restart, not resume from D3 */ 916 if (!mvmvif->seqno_valid) 917 return; 918 919 mvmvif->seqno_valid = false; 920 921 if (!(mvm->fw->ucode_capa.flags & 922 IWL_UCODE_TLV_FLAGS_D3_CONTINUITY_API)) 923 return; 924 925 if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, CMD_SYNC, 926 sizeof(query_cmd), &query_cmd)) 927 IWL_ERR(mvm, "failed to set non-QoS seqno\n"); 928} 929 930static int __iwl_mvm_suspend(struct ieee80211_hw *hw, 931 struct cfg80211_wowlan *wowlan, 932 bool test) 933{ 934 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 935 struct iwl_d3_iter_data suspend_iter_data = { 936 .mvm = mvm, 937 }; 938 struct ieee80211_vif *vif; 939 struct iwl_mvm_vif *mvmvif; 940 struct ieee80211_sta *ap_sta; 941 struct iwl_mvm_sta *mvm_ap_sta; 942 struct iwl_wowlan_config_cmd wowlan_config_cmd = {}; 943 struct iwl_wowlan_kek_kck_material_cmd kek_kck_cmd = {}; 944 struct iwl_wowlan_tkip_params_cmd tkip_cmd = {}; 945 struct iwl_d3_manager_config d3_cfg_cmd_data = { 946 /* 947 * Program the minimum sleep time to 10 seconds, as many 948 * platforms have issues processing a wakeup signal while 949 * still being in the process of suspending. 950 */ 951 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000), 952 }; 953 struct iwl_host_cmd d3_cfg_cmd = { 954 .id = D3_CONFIG_CMD, 955 .flags = CMD_SYNC | CMD_WANT_SKB, 956 .data[0] = &d3_cfg_cmd_data, 957 .len[0] = sizeof(d3_cfg_cmd_data), 958 }; 959 struct wowlan_key_data key_data = { 960 .use_rsc_tsc = false, 961 .tkip = &tkip_cmd, 962 .use_tkip = false, 963 }; 964 int ret, i; 965 int len __maybe_unused; 966 u8 old_aux_sta_id, old_ap_sta_id = IWL_MVM_STATION_COUNT; 967 968 if (!wowlan) { 969 /* 970 * mac80211 shouldn't get here, but for D3 test 971 * it doesn't warrant a warning 972 */ 973 WARN_ON(!test); 974 return -EINVAL; 975 } 976 977 key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL); 978 if (!key_data.rsc_tsc) 979 return -ENOMEM; 980 981 mutex_lock(&mvm->mutex); 982 983 old_aux_sta_id = mvm->aux_sta.sta_id; 984 985 /* see if there's only a single BSS vif and it's associated */ 986 ieee80211_iterate_active_interfaces_atomic( 987 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 988 iwl_mvm_d3_iface_iterator, &suspend_iter_data); 989 990 if (suspend_iter_data.error || !suspend_iter_data.vif) { 991 ret = 1; 992 goto out_noreset; 993 } 994 995 vif = suspend_iter_data.vif; 996 mvmvif = iwl_mvm_vif_from_mac80211(vif); 997 998 ap_sta = rcu_dereference_protected( 999 mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], 1000 lockdep_is_held(&mvm->mutex)); 1001 if (IS_ERR_OR_NULL(ap_sta)) { 1002 ret = -EINVAL; 1003 goto out_noreset; 1004 } 1005 1006 mvm_ap_sta = (struct iwl_mvm_sta *)ap_sta->drv_priv; 1007 1008 /* TODO: wowlan_config_cmd.wowlan_ba_teardown_tids */ 1009 1010 wowlan_config_cmd.is_11n_connection = ap_sta->ht_cap.ht_supported; 1011 1012 /* Query the last used seqno and set it */ 1013 ret = iwl_mvm_get_last_nonqos_seq(mvm, vif); 1014 if (ret < 0) 1015 goto out_noreset; 1016 wowlan_config_cmd.non_qos_seq = cpu_to_le16(ret); 1017 1018 /* 1019 * For QoS counters, we store the one to use next, so subtract 0x10 1020 * since the uCode will add 0x10 *before* using the value while we 1021 * increment after using the value (i.e. store the next value to use). 1022 */ 1023 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1024 u16 seq = mvm_ap_sta->tid_data[i].seq_number; 1025 seq -= 0x10; 1026 wowlan_config_cmd.qos_seq[i] = cpu_to_le16(seq); 1027 } 1028 1029 if (wowlan->disconnect) 1030 wowlan_config_cmd.wakeup_filter |= 1031 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS | 1032 IWL_WOWLAN_WAKEUP_LINK_CHANGE); 1033 if (wowlan->magic_pkt) 1034 wowlan_config_cmd.wakeup_filter |= 1035 cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET); 1036 if (wowlan->gtk_rekey_failure) 1037 wowlan_config_cmd.wakeup_filter |= 1038 cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL); 1039 if (wowlan->eap_identity_req) 1040 wowlan_config_cmd.wakeup_filter |= 1041 cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ); 1042 if (wowlan->four_way_handshake) 1043 wowlan_config_cmd.wakeup_filter |= 1044 cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE); 1045 if (wowlan->n_patterns) 1046 wowlan_config_cmd.wakeup_filter |= 1047 cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH); 1048 1049 if (wowlan->rfkill_release) 1050 wowlan_config_cmd.wakeup_filter |= 1051 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT); 1052 1053 if (wowlan->tcp) { 1054 /* 1055 * Set the "link change" (really "link lost") flag as well 1056 * since that implies losing the TCP connection. 1057 */ 1058 wowlan_config_cmd.wakeup_filter |= 1059 cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS | 1060 IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE | 1061 IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET | 1062 IWL_WOWLAN_WAKEUP_LINK_CHANGE); 1063 } 1064 1065 iwl_mvm_cancel_scan(mvm); 1066 1067 iwl_trans_stop_device(mvm->trans); 1068 1069 /* 1070 * The D3 firmware still hardcodes the AP station ID for the 1071 * BSS we're associated with as 0. Store the real STA ID here 1072 * and assign 0. When we leave this function, we'll restore 1073 * the original value for the resume code. 1074 */ 1075 old_ap_sta_id = mvm_ap_sta->sta_id; 1076 mvm_ap_sta->sta_id = 0; 1077 mvmvif->ap_sta_id = 0; 1078 1079 /* 1080 * Set the HW restart bit -- this is mostly true as we're 1081 * going to load new firmware and reprogram that, though 1082 * the reprogramming is going to be manual to avoid adding 1083 * all the MACs that aren't support. 1084 * We don't have to clear up everything though because the 1085 * reprogramming is manual. When we resume, we'll actually 1086 * go through a proper restart sequence again to switch 1087 * back to the runtime firmware image. 1088 */ 1089 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1090 1091 /* We reprogram keys and shouldn't allocate new key indices */ 1092 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); 1093 1094 mvm->ptk_ivlen = 0; 1095 mvm->ptk_icvlen = 0; 1096 mvm->ptk_ivlen = 0; 1097 mvm->ptk_icvlen = 0; 1098 1099 /* 1100 * The D3 firmware still hardcodes the AP station ID for the 1101 * BSS we're associated with as 0. As a result, we have to move 1102 * the auxiliary station to ID 1 so the ID 0 remains free for 1103 * the AP station for later. 1104 * We set the sta_id to 1 here, and reset it to its previous 1105 * value (that we stored above) later. 1106 */ 1107 mvm->aux_sta.sta_id = 1; 1108 1109 ret = iwl_mvm_load_d3_fw(mvm); 1110 if (ret) 1111 goto out; 1112 1113 ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta); 1114 if (ret) 1115 goto out; 1116 1117 if (!iwlwifi_mod_params.sw_crypto) { 1118 /* 1119 * This needs to be unlocked due to lock ordering 1120 * constraints. Since we're in the suspend path 1121 * that isn't really a problem though. 1122 */ 1123 mutex_unlock(&mvm->mutex); 1124 ieee80211_iter_keys(mvm->hw, vif, 1125 iwl_mvm_wowlan_program_keys, 1126 &key_data); 1127 mutex_lock(&mvm->mutex); 1128 if (key_data.error) { 1129 ret = -EIO; 1130 goto out; 1131 } 1132 1133 if (key_data.use_rsc_tsc) { 1134 struct iwl_host_cmd rsc_tsc_cmd = { 1135 .id = WOWLAN_TSC_RSC_PARAM, 1136 .flags = CMD_SYNC, 1137 .data[0] = key_data.rsc_tsc, 1138 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 1139 .len[0] = sizeof(*key_data.rsc_tsc), 1140 }; 1141 1142 ret = iwl_mvm_send_cmd(mvm, &rsc_tsc_cmd); 1143 if (ret) 1144 goto out; 1145 } 1146 1147 if (key_data.use_tkip) { 1148 ret = iwl_mvm_send_cmd_pdu(mvm, 1149 WOWLAN_TKIP_PARAM, 1150 CMD_SYNC, sizeof(tkip_cmd), 1151 &tkip_cmd); 1152 if (ret) 1153 goto out; 1154 } 1155 1156 if (mvmvif->rekey_data.valid) { 1157 memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd)); 1158 memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck, 1159 NL80211_KCK_LEN); 1160 kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN); 1161 memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek, 1162 NL80211_KEK_LEN); 1163 kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN); 1164 kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr; 1165 1166 ret = iwl_mvm_send_cmd_pdu(mvm, 1167 WOWLAN_KEK_KCK_MATERIAL, 1168 CMD_SYNC, 1169 sizeof(kek_kck_cmd), 1170 &kek_kck_cmd); 1171 if (ret) 1172 goto out; 1173 } 1174 } 1175 1176 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 1177 CMD_SYNC, sizeof(wowlan_config_cmd), 1178 &wowlan_config_cmd); 1179 if (ret) 1180 goto out; 1181 1182 ret = iwl_mvm_send_patterns(mvm, wowlan); 1183 if (ret) 1184 goto out; 1185 1186 ret = iwl_mvm_send_proto_offload(mvm, vif); 1187 if (ret) 1188 goto out; 1189 1190 ret = iwl_mvm_send_remote_wake_cfg(mvm, vif, wowlan->tcp); 1191 if (ret) 1192 goto out; 1193 1194 ret = iwl_mvm_power_update_device(mvm); 1195 if (ret) 1196 goto out; 1197 1198 ret = iwl_mvm_power_update_mac(mvm, vif); 1199 if (ret) 1200 goto out; 1201 1202#ifdef CONFIG_IWLWIFI_DEBUGFS 1203 if (mvm->d3_wake_sysassert) 1204 d3_cfg_cmd_data.wakeup_flags |= 1205 cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR); 1206#endif 1207 1208 /* must be last -- this switches firmware state */ 1209 ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd); 1210 if (ret) 1211 goto out; 1212#ifdef CONFIG_IWLWIFI_DEBUGFS 1213 len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt); 1214 if (len >= sizeof(u32)) { 1215 mvm->d3_test_pme_ptr = 1216 le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data); 1217 } 1218#endif 1219 iwl_free_resp(&d3_cfg_cmd); 1220 1221 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1222 1223 iwl_trans_d3_suspend(mvm->trans, test); 1224 out: 1225 mvm->aux_sta.sta_id = old_aux_sta_id; 1226 mvm_ap_sta->sta_id = old_ap_sta_id; 1227 mvmvif->ap_sta_id = old_ap_sta_id; 1228 1229 if (ret < 0) 1230 ieee80211_restart_hw(mvm->hw); 1231 out_noreset: 1232 kfree(key_data.rsc_tsc); 1233 1234 mutex_unlock(&mvm->mutex); 1235 1236 return ret; 1237} 1238 1239int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) 1240{ 1241 return __iwl_mvm_suspend(hw, wowlan, false); 1242} 1243 1244/* converted data from the different status responses */ 1245struct iwl_wowlan_status_data { 1246 u16 pattern_number; 1247 u16 qos_seq_ctr[8]; 1248 u32 wakeup_reasons; 1249 u32 wake_packet_length; 1250 u32 wake_packet_bufsize; 1251 const u8 *wake_packet; 1252}; 1253 1254static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm, 1255 struct ieee80211_vif *vif, 1256 struct iwl_wowlan_status_data *status) 1257{ 1258 struct sk_buff *pkt = NULL; 1259 struct cfg80211_wowlan_wakeup wakeup = { 1260 .pattern_idx = -1, 1261 }; 1262 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; 1263 u32 reasons = status->wakeup_reasons; 1264 1265 if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) { 1266 wakeup_report = NULL; 1267 goto report; 1268 } 1269 1270 if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET) 1271 wakeup.magic_pkt = true; 1272 1273 if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN) 1274 wakeup.pattern_idx = 1275 status->pattern_number; 1276 1277 if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 1278 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)) 1279 wakeup.disconnect = true; 1280 1281 if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE) 1282 wakeup.gtk_rekey_failure = true; 1283 1284 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 1285 wakeup.rfkill_release = true; 1286 1287 if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST) 1288 wakeup.eap_identity_req = true; 1289 1290 if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE) 1291 wakeup.four_way_handshake = true; 1292 1293 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS) 1294 wakeup.tcp_connlost = true; 1295 1296 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE) 1297 wakeup.tcp_nomoretokens = true; 1298 1299 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET) 1300 wakeup.tcp_match = true; 1301 1302 if (status->wake_packet_bufsize) { 1303 int pktsize = status->wake_packet_bufsize; 1304 int pktlen = status->wake_packet_length; 1305 const u8 *pktdata = status->wake_packet; 1306 struct ieee80211_hdr *hdr = (void *)pktdata; 1307 int truncated = pktlen - pktsize; 1308 1309 /* this would be a firmware bug */ 1310 if (WARN_ON_ONCE(truncated < 0)) 1311 truncated = 0; 1312 1313 if (ieee80211_is_data(hdr->frame_control)) { 1314 int hdrlen = ieee80211_hdrlen(hdr->frame_control); 1315 int ivlen = 0, icvlen = 4; /* also FCS */ 1316 1317 pkt = alloc_skb(pktsize, GFP_KERNEL); 1318 if (!pkt) 1319 goto report; 1320 1321 memcpy(skb_put(pkt, hdrlen), pktdata, hdrlen); 1322 pktdata += hdrlen; 1323 pktsize -= hdrlen; 1324 1325 if (ieee80211_has_protected(hdr->frame_control)) { 1326 /* 1327 * This is unlocked and using gtk_i(c)vlen, 1328 * but since everything is under RTNL still 1329 * that's not really a problem - changing 1330 * it would be difficult. 1331 */ 1332 if (is_multicast_ether_addr(hdr->addr1)) { 1333 ivlen = mvm->gtk_ivlen; 1334 icvlen += mvm->gtk_icvlen; 1335 } else { 1336 ivlen = mvm->ptk_ivlen; 1337 icvlen += mvm->ptk_icvlen; 1338 } 1339 } 1340 1341 /* if truncated, FCS/ICV is (partially) gone */ 1342 if (truncated >= icvlen) { 1343 icvlen = 0; 1344 truncated -= icvlen; 1345 } else { 1346 icvlen -= truncated; 1347 truncated = 0; 1348 } 1349 1350 pktsize -= ivlen + icvlen; 1351 pktdata += ivlen; 1352 1353 memcpy(skb_put(pkt, pktsize), pktdata, pktsize); 1354 1355 if (ieee80211_data_to_8023(pkt, vif->addr, vif->type)) 1356 goto report; 1357 wakeup.packet = pkt->data; 1358 wakeup.packet_present_len = pkt->len; 1359 wakeup.packet_len = pkt->len - truncated; 1360 wakeup.packet_80211 = false; 1361 } else { 1362 int fcslen = 4; 1363 1364 if (truncated >= 4) { 1365 truncated -= 4; 1366 fcslen = 0; 1367 } else { 1368 fcslen -= truncated; 1369 truncated = 0; 1370 } 1371 pktsize -= fcslen; 1372 wakeup.packet = status->wake_packet; 1373 wakeup.packet_present_len = pktsize; 1374 wakeup.packet_len = pktlen - truncated; 1375 wakeup.packet_80211 = true; 1376 } 1377 } 1378 1379 report: 1380 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); 1381 kfree_skb(pkt); 1382} 1383 1384static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc, 1385 struct ieee80211_key_seq *seq) 1386{ 1387 u64 pn; 1388 1389 pn = le64_to_cpu(sc->pn); 1390 seq->ccmp.pn[0] = pn >> 40; 1391 seq->ccmp.pn[1] = pn >> 32; 1392 seq->ccmp.pn[2] = pn >> 24; 1393 seq->ccmp.pn[3] = pn >> 16; 1394 seq->ccmp.pn[4] = pn >> 8; 1395 seq->ccmp.pn[5] = pn; 1396} 1397 1398static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc, 1399 struct ieee80211_key_seq *seq) 1400{ 1401 seq->tkip.iv32 = le32_to_cpu(sc->iv32); 1402 seq->tkip.iv16 = le16_to_cpu(sc->iv16); 1403} 1404 1405static void iwl_mvm_set_aes_rx_seq(struct aes_sc *scs, 1406 struct ieee80211_key_conf *key) 1407{ 1408 int tid; 1409 1410 BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS); 1411 1412 for (tid = 0; tid < IWL_NUM_RSC; tid++) { 1413 struct ieee80211_key_seq seq = {}; 1414 1415 iwl_mvm_aes_sc_to_seq(&scs[tid], &seq); 1416 ieee80211_set_key_rx_seq(key, tid, &seq); 1417 } 1418} 1419 1420static void iwl_mvm_set_tkip_rx_seq(struct tkip_sc *scs, 1421 struct ieee80211_key_conf *key) 1422{ 1423 int tid; 1424 1425 BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS); 1426 1427 for (tid = 0; tid < IWL_NUM_RSC; tid++) { 1428 struct ieee80211_key_seq seq = {}; 1429 1430 iwl_mvm_tkip_sc_to_seq(&scs[tid], &seq); 1431 ieee80211_set_key_rx_seq(key, tid, &seq); 1432 } 1433} 1434 1435static void iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf *key, 1436 struct iwl_wowlan_status_v6 *status) 1437{ 1438 union iwl_all_tsc_rsc *rsc = &status->gtk.rsc.all_tsc_rsc; 1439 1440 switch (key->cipher) { 1441 case WLAN_CIPHER_SUITE_CCMP: 1442 iwl_mvm_set_aes_rx_seq(rsc->aes.multicast_rsc, key); 1443 break; 1444 case WLAN_CIPHER_SUITE_TKIP: 1445 iwl_mvm_set_tkip_rx_seq(rsc->tkip.multicast_rsc, key); 1446 break; 1447 default: 1448 WARN_ON(1); 1449 } 1450} 1451 1452struct iwl_mvm_d3_gtk_iter_data { 1453 struct iwl_wowlan_status_v6 *status; 1454 void *last_gtk; 1455 u32 cipher; 1456 bool find_phase, unhandled_cipher; 1457 int num_keys; 1458}; 1459 1460static void iwl_mvm_d3_update_gtks(struct ieee80211_hw *hw, 1461 struct ieee80211_vif *vif, 1462 struct ieee80211_sta *sta, 1463 struct ieee80211_key_conf *key, 1464 void *_data) 1465{ 1466 struct iwl_mvm_d3_gtk_iter_data *data = _data; 1467 1468 if (data->unhandled_cipher) 1469 return; 1470 1471 switch (key->cipher) { 1472 case WLAN_CIPHER_SUITE_WEP40: 1473 case WLAN_CIPHER_SUITE_WEP104: 1474 /* ignore WEP completely, nothing to do */ 1475 return; 1476 case WLAN_CIPHER_SUITE_CCMP: 1477 case WLAN_CIPHER_SUITE_TKIP: 1478 /* we support these */ 1479 break; 1480 default: 1481 /* everything else (even CMAC for MFP) - disconnect from AP */ 1482 data->unhandled_cipher = true; 1483 return; 1484 } 1485 1486 data->num_keys++; 1487 1488 /* 1489 * pairwise key - update sequence counters only; 1490 * note that this assumes no TDLS sessions are active 1491 */ 1492 if (sta) { 1493 struct ieee80211_key_seq seq = {}; 1494 union iwl_all_tsc_rsc *sc = &data->status->gtk.rsc.all_tsc_rsc; 1495 1496 if (data->find_phase) 1497 return; 1498 1499 switch (key->cipher) { 1500 case WLAN_CIPHER_SUITE_CCMP: 1501 iwl_mvm_aes_sc_to_seq(&sc->aes.tsc, &seq); 1502 iwl_mvm_set_aes_rx_seq(sc->aes.unicast_rsc, key); 1503 break; 1504 case WLAN_CIPHER_SUITE_TKIP: 1505 iwl_mvm_tkip_sc_to_seq(&sc->tkip.tsc, &seq); 1506 iwl_mvm_set_tkip_rx_seq(sc->tkip.unicast_rsc, key); 1507 break; 1508 } 1509 ieee80211_set_key_tx_seq(key, &seq); 1510 1511 /* that's it for this key */ 1512 return; 1513 } 1514 1515 if (data->find_phase) { 1516 data->last_gtk = key; 1517 data->cipher = key->cipher; 1518 return; 1519 } 1520 1521 if (data->status->num_of_gtk_rekeys) 1522 ieee80211_remove_key(key); 1523 else if (data->last_gtk == key) 1524 iwl_mvm_set_key_rx_seq(key, data->status); 1525} 1526 1527static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm, 1528 struct ieee80211_vif *vif, 1529 struct iwl_wowlan_status_v6 *status) 1530{ 1531 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1532 struct iwl_mvm_d3_gtk_iter_data gtkdata = { 1533 .status = status, 1534 }; 1535 u32 disconnection_reasons = 1536 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 1537 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH; 1538 1539 if (!status || !vif->bss_conf.bssid) 1540 return false; 1541 1542 if (le32_to_cpu(status->wakeup_reasons) & disconnection_reasons) 1543 return false; 1544 1545 /* find last GTK that we used initially, if any */ 1546 gtkdata.find_phase = true; 1547 ieee80211_iter_keys(mvm->hw, vif, 1548 iwl_mvm_d3_update_gtks, >kdata); 1549 /* not trying to keep connections with MFP/unhandled ciphers */ 1550 if (gtkdata.unhandled_cipher) 1551 return false; 1552 if (!gtkdata.num_keys) 1553 goto out; 1554 if (!gtkdata.last_gtk) 1555 return false; 1556 1557 /* 1558 * invalidate all other GTKs that might still exist and update 1559 * the one that we used 1560 */ 1561 gtkdata.find_phase = false; 1562 ieee80211_iter_keys(mvm->hw, vif, 1563 iwl_mvm_d3_update_gtks, >kdata); 1564 1565 if (status->num_of_gtk_rekeys) { 1566 struct ieee80211_key_conf *key; 1567 struct { 1568 struct ieee80211_key_conf conf; 1569 u8 key[32]; 1570 } conf = { 1571 .conf.cipher = gtkdata.cipher, 1572 .conf.keyidx = status->gtk.key_index, 1573 }; 1574 1575 switch (gtkdata.cipher) { 1576 case WLAN_CIPHER_SUITE_CCMP: 1577 conf.conf.keylen = WLAN_KEY_LEN_CCMP; 1578 memcpy(conf.conf.key, status->gtk.decrypt_key, 1579 WLAN_KEY_LEN_CCMP); 1580 break; 1581 case WLAN_CIPHER_SUITE_TKIP: 1582 conf.conf.keylen = WLAN_KEY_LEN_TKIP; 1583 memcpy(conf.conf.key, status->gtk.decrypt_key, 16); 1584 /* leave TX MIC key zeroed, we don't use it anyway */ 1585 memcpy(conf.conf.key + 1586 NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 1587 status->gtk.tkip_mic_key, 8); 1588 break; 1589 } 1590 1591 key = ieee80211_gtk_rekey_add(vif, &conf.conf); 1592 if (IS_ERR(key)) 1593 return false; 1594 iwl_mvm_set_key_rx_seq(key, status); 1595 } 1596 1597 if (status->num_of_gtk_rekeys) { 1598 __be64 replay_ctr = 1599 cpu_to_be64(le64_to_cpu(status->replay_ctr)); 1600 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid, 1601 (void *)&replay_ctr, GFP_KERNEL); 1602 } 1603 1604out: 1605 mvmvif->seqno_valid = true; 1606 /* +0x10 because the set API expects next-to-use, not last-used */ 1607 mvmvif->seqno = le16_to_cpu(status->non_qos_seq_ctr) + 0x10; 1608 1609 return true; 1610} 1611 1612/* releases the MVM mutex */ 1613static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm, 1614 struct ieee80211_vif *vif) 1615{ 1616 u32 base = mvm->error_event_table; 1617 struct error_table_start { 1618 /* cf. struct iwl_error_event_table */ 1619 u32 valid; 1620 u32 error_id; 1621 } err_info; 1622 struct iwl_host_cmd cmd = { 1623 .id = WOWLAN_GET_STATUSES, 1624 .flags = CMD_SYNC | CMD_WANT_SKB, 1625 }; 1626 struct iwl_wowlan_status_data status; 1627 struct iwl_wowlan_status_v6 *status_v6; 1628 int ret, len, status_size, i; 1629 bool keep; 1630 struct ieee80211_sta *ap_sta; 1631 struct iwl_mvm_sta *mvm_ap_sta; 1632 1633 iwl_trans_read_mem_bytes(mvm->trans, base, 1634 &err_info, sizeof(err_info)); 1635 1636 if (err_info.valid) { 1637 IWL_INFO(mvm, "error table is valid (%d)\n", 1638 err_info.valid); 1639 if (err_info.error_id == RF_KILL_INDICATOR_FOR_WOWLAN) { 1640 struct cfg80211_wowlan_wakeup wakeup = { 1641 .rfkill_release = true, 1642 }; 1643 ieee80211_report_wowlan_wakeup(vif, &wakeup, 1644 GFP_KERNEL); 1645 } 1646 goto out_unlock; 1647 } 1648 1649 /* only for tracing for now */ 1650 ret = iwl_mvm_send_cmd_pdu(mvm, OFFLOADS_QUERY_CMD, CMD_SYNC, 0, NULL); 1651 if (ret) 1652 IWL_ERR(mvm, "failed to query offload statistics (%d)\n", ret); 1653 1654 ret = iwl_mvm_send_cmd(mvm, &cmd); 1655 if (ret) { 1656 IWL_ERR(mvm, "failed to query status (%d)\n", ret); 1657 goto out_unlock; 1658 } 1659 1660 /* RF-kill already asserted again... */ 1661 if (!cmd.resp_pkt) 1662 goto out_unlock; 1663 1664 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_D3_CONTINUITY_API) 1665 status_size = sizeof(struct iwl_wowlan_status_v6); 1666 else 1667 status_size = sizeof(struct iwl_wowlan_status_v4); 1668 1669 len = iwl_rx_packet_payload_len(cmd.resp_pkt); 1670 if (len < status_size) { 1671 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); 1672 goto out_free_resp; 1673 } 1674 1675 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_D3_CONTINUITY_API) { 1676 status_v6 = (void *)cmd.resp_pkt->data; 1677 1678 status.pattern_number = le16_to_cpu(status_v6->pattern_number); 1679 for (i = 0; i < 8; i++) 1680 status.qos_seq_ctr[i] = 1681 le16_to_cpu(status_v6->qos_seq_ctr[i]); 1682 status.wakeup_reasons = le32_to_cpu(status_v6->wakeup_reasons); 1683 status.wake_packet_length = 1684 le32_to_cpu(status_v6->wake_packet_length); 1685 status.wake_packet_bufsize = 1686 le32_to_cpu(status_v6->wake_packet_bufsize); 1687 status.wake_packet = status_v6->wake_packet; 1688 } else { 1689 struct iwl_wowlan_status_v4 *status_v4; 1690 status_v6 = NULL; 1691 status_v4 = (void *)cmd.resp_pkt->data; 1692 1693 status.pattern_number = le16_to_cpu(status_v4->pattern_number); 1694 for (i = 0; i < 8; i++) 1695 status.qos_seq_ctr[i] = 1696 le16_to_cpu(status_v4->qos_seq_ctr[i]); 1697 status.wakeup_reasons = le32_to_cpu(status_v4->wakeup_reasons); 1698 status.wake_packet_length = 1699 le32_to_cpu(status_v4->wake_packet_length); 1700 status.wake_packet_bufsize = 1701 le32_to_cpu(status_v4->wake_packet_bufsize); 1702 status.wake_packet = status_v4->wake_packet; 1703 } 1704 1705 if (len != status_size + ALIGN(status.wake_packet_bufsize, 4)) { 1706 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); 1707 goto out_free_resp; 1708 } 1709 1710 /* still at hard-coded place 0 for D3 image */ 1711 ap_sta = rcu_dereference_protected( 1712 mvm->fw_id_to_mac_id[0], 1713 lockdep_is_held(&mvm->mutex)); 1714 if (IS_ERR_OR_NULL(ap_sta)) 1715 goto out_free_resp; 1716 1717 mvm_ap_sta = (struct iwl_mvm_sta *)ap_sta->drv_priv; 1718 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1719 u16 seq = status.qos_seq_ctr[i]; 1720 /* firmware stores last-used value, we store next value */ 1721 seq += 0x10; 1722 mvm_ap_sta->tid_data[i].seq_number = seq; 1723 } 1724 1725 /* now we have all the data we need, unlock to avoid mac80211 issues */ 1726 mutex_unlock(&mvm->mutex); 1727 1728 iwl_mvm_report_wakeup_reasons(mvm, vif, &status); 1729 1730 keep = iwl_mvm_setup_connection_keep(mvm, vif, status_v6); 1731 1732 iwl_free_resp(&cmd); 1733 return keep; 1734 1735 out_free_resp: 1736 iwl_free_resp(&cmd); 1737 out_unlock: 1738 mutex_unlock(&mvm->mutex); 1739 return false; 1740} 1741 1742static void iwl_mvm_read_d3_sram(struct iwl_mvm *mvm) 1743{ 1744#ifdef CONFIG_IWLWIFI_DEBUGFS 1745 const struct fw_img *img = &mvm->fw->img[IWL_UCODE_WOWLAN]; 1746 u32 len = img->sec[IWL_UCODE_SECTION_DATA].len; 1747 u32 offs = img->sec[IWL_UCODE_SECTION_DATA].offset; 1748 1749 if (!mvm->store_d3_resume_sram) 1750 return; 1751 1752 if (!mvm->d3_resume_sram) { 1753 mvm->d3_resume_sram = kzalloc(len, GFP_KERNEL); 1754 if (!mvm->d3_resume_sram) 1755 return; 1756 } 1757 1758 iwl_trans_read_mem_bytes(mvm->trans, offs, mvm->d3_resume_sram, len); 1759#endif 1760} 1761 1762static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac, 1763 struct ieee80211_vif *vif) 1764{ 1765 /* skip the one we keep connection on */ 1766 if (data == vif) 1767 return; 1768 1769 if (vif->type == NL80211_IFTYPE_STATION) 1770 ieee80211_resume_disconnect(vif); 1771} 1772 1773static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test) 1774{ 1775 struct iwl_d3_iter_data resume_iter_data = { 1776 .mvm = mvm, 1777 }; 1778 struct ieee80211_vif *vif = NULL; 1779 int ret; 1780 enum iwl_d3_status d3_status; 1781 bool keep = false; 1782 1783 mutex_lock(&mvm->mutex); 1784 1785 /* get the BSS vif pointer again */ 1786 ieee80211_iterate_active_interfaces_atomic( 1787 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1788 iwl_mvm_d3_iface_iterator, &resume_iter_data); 1789 1790 if (WARN_ON(resume_iter_data.error || !resume_iter_data.vif)) 1791 goto out_unlock; 1792 1793 vif = resume_iter_data.vif; 1794 1795 ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test); 1796 if (ret) 1797 goto out_unlock; 1798 1799 if (d3_status != IWL_D3_STATUS_ALIVE) { 1800 IWL_INFO(mvm, "Device was reset during suspend\n"); 1801 goto out_unlock; 1802 } 1803 1804 /* query SRAM first in case we want event logging */ 1805 iwl_mvm_read_d3_sram(mvm); 1806 1807 keep = iwl_mvm_query_wakeup_reasons(mvm, vif); 1808#ifdef CONFIG_IWLWIFI_DEBUGFS 1809 if (keep) 1810 mvm->keep_vif = vif; 1811#endif 1812 /* has unlocked the mutex, so skip that */ 1813 goto out; 1814 1815 out_unlock: 1816 mutex_unlock(&mvm->mutex); 1817 1818 out: 1819 if (!test) 1820 ieee80211_iterate_active_interfaces_rtnl(mvm->hw, 1821 IEEE80211_IFACE_ITER_NORMAL, 1822 iwl_mvm_d3_disconnect_iter, keep ? vif : NULL); 1823 1824 /* return 1 to reconfigure the device */ 1825 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1826 return 1; 1827} 1828 1829int iwl_mvm_resume(struct ieee80211_hw *hw) 1830{ 1831 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1832 1833 return __iwl_mvm_resume(mvm, false); 1834} 1835 1836void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled) 1837{ 1838 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1839 1840 device_set_wakeup_enable(mvm->trans->dev, enabled); 1841} 1842 1843#ifdef CONFIG_IWLWIFI_DEBUGFS 1844static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file) 1845{ 1846 struct iwl_mvm *mvm = inode->i_private; 1847 int err; 1848 1849 if (mvm->d3_test_active) 1850 return -EBUSY; 1851 1852 file->private_data = inode->i_private; 1853 1854 ieee80211_stop_queues(mvm->hw); 1855 synchronize_net(); 1856 1857 /* start pseudo D3 */ 1858 rtnl_lock(); 1859 err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true); 1860 rtnl_unlock(); 1861 if (err > 0) 1862 err = -EINVAL; 1863 if (err) { 1864 ieee80211_wake_queues(mvm->hw); 1865 return err; 1866 } 1867 mvm->d3_test_active = true; 1868 mvm->keep_vif = NULL; 1869 return 0; 1870} 1871 1872static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf, 1873 size_t count, loff_t *ppos) 1874{ 1875 struct iwl_mvm *mvm = file->private_data; 1876 u32 pme_asserted; 1877 1878 while (true) { 1879 /* read pme_ptr if available */ 1880 if (mvm->d3_test_pme_ptr) { 1881 pme_asserted = iwl_trans_read_mem32(mvm->trans, 1882 mvm->d3_test_pme_ptr); 1883 if (pme_asserted) 1884 break; 1885 } 1886 1887 if (msleep_interruptible(100)) 1888 break; 1889 } 1890 1891 return 0; 1892} 1893 1894static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac, 1895 struct ieee80211_vif *vif) 1896{ 1897 /* skip the one we keep connection on */ 1898 if (_data == vif) 1899 return; 1900 1901 if (vif->type == NL80211_IFTYPE_STATION) 1902 ieee80211_connection_loss(vif); 1903} 1904 1905static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file) 1906{ 1907 struct iwl_mvm *mvm = inode->i_private; 1908 int remaining_time = 10; 1909 1910 mvm->d3_test_active = false; 1911 __iwl_mvm_resume(mvm, true); 1912 iwl_abort_notification_waits(&mvm->notif_wait); 1913 ieee80211_restart_hw(mvm->hw); 1914 1915 /* wait for restart and disconnect all interfaces */ 1916 while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 1917 remaining_time > 0) { 1918 remaining_time--; 1919 msleep(1000); 1920 } 1921 1922 if (remaining_time == 0) 1923 IWL_ERR(mvm, "Timed out waiting for HW restart to finish!\n"); 1924 1925 ieee80211_iterate_active_interfaces_atomic( 1926 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1927 iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif); 1928 1929 ieee80211_wake_queues(mvm->hw); 1930 1931 return 0; 1932} 1933 1934const struct file_operations iwl_dbgfs_d3_test_ops = { 1935 .llseek = no_llseek, 1936 .open = iwl_mvm_d3_test_open, 1937 .read = iwl_mvm_d3_test_read, 1938 .release = iwl_mvm_d3_test_release, 1939}; 1940#endif 1941