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, 2018 - 2020 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 * The full GNU General Public License is included in this distribution 22 * in the file called COPYING. 23 * 24 * Contact Information: 25 * Intel Linux Wireless <linuxwifi@intel.com> 26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 27 * 28 * BSD LICENSE 29 * 30 * Copyright(c) 2012 - 2014, 2018 - 2020 Intel Corporation. All rights reserved. 31 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 32 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH 33 * All rights reserved. 34 * 35 * Redistribution and use in source and binary forms, with or without 36 * modification, are permitted provided that the following conditions 37 * are met: 38 * 39 * * Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * * Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in 43 * the documentation and/or other materials provided with the 44 * distribution. 45 * * Neither the name Intel Corporation nor the names of its 46 * contributors may be used to endorse or promote products derived 47 * from this software without specific prior written permission. 48 * 49 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 50 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 51 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 52 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 53 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 54 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 55 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 56 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 57 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 58 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 59 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 60 * 61 *****************************************************************************/ 62 63#include <linux/etherdevice.h> 64#include <linux/ip.h> 65#include <linux/fs.h> 66#include <net/cfg80211.h> 67#include <net/ipv6.h> 68#include <net/tcp.h> 69#include <net/addrconf.h> 70#include "iwl-modparams.h" 71#include "fw-api.h" 72#include "mvm.h" 73#include "fw/img.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 mutex_lock(&mvm->mutex); 83 84 mvmvif->rekey_data.kek_len = data->kek_len; 85 mvmvif->rekey_data.kck_len = data->kck_len; 86 memcpy(mvmvif->rekey_data.kek, data->kek, data->kek_len); 87 memcpy(mvmvif->rekey_data.kck, data->kck, data->kck_len); 88 mvmvif->rekey_data.akm = data->akm & 0xFF; 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 memset(mvmvif->tentative_addrs, 0, sizeof(mvmvif->tentative_addrs)); 106 107 read_lock_bh(&idev->lock); 108 list_for_each_entry(ifa, &idev->addr_list, if_list) { 109 mvmvif->target_ipv6_addrs[idx] = ifa->addr; 110 if (ifa->flags & IFA_F_TENTATIVE) 111 __set_bit(idx, mvmvif->tentative_addrs); 112 idx++; 113 if (idx >= IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_MAX) 114 break; 115 } 116 read_unlock_bh(&idev->lock); 117 118 mvmvif->num_target_ipv6_addrs = idx; 119} 120#endif 121 122void iwl_mvm_set_default_unicast_key(struct ieee80211_hw *hw, 123 struct ieee80211_vif *vif, int idx) 124{ 125 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 126 127 mvmvif->tx_key_idx = idx; 128} 129 130static void iwl_mvm_convert_p1k(u16 *p1k, __le16 *out) 131{ 132 int i; 133 134 for (i = 0; i < IWL_P1K_SIZE; i++) 135 out[i] = cpu_to_le16(p1k[i]); 136} 137 138static const u8 *iwl_mvm_find_max_pn(struct ieee80211_key_conf *key, 139 struct iwl_mvm_key_pn *ptk_pn, 140 struct ieee80211_key_seq *seq, 141 int tid, int queues) 142{ 143 const u8 *ret = seq->ccmp.pn; 144 int i; 145 146 /* get the PN from mac80211, used on the default queue */ 147 ieee80211_get_key_rx_seq(key, tid, seq); 148 149 /* and use the internal data for the other queues */ 150 for (i = 1; i < queues; i++) { 151 const u8 *tmp = ptk_pn->q[i].pn[tid]; 152 153 if (memcmp(ret, tmp, IEEE80211_CCMP_PN_LEN) <= 0) 154 ret = tmp; 155 } 156 157 return ret; 158} 159 160struct wowlan_key_data { 161 struct iwl_wowlan_rsc_tsc_params_cmd *rsc_tsc; 162 struct iwl_wowlan_tkip_params_cmd *tkip; 163 struct iwl_wowlan_kek_kck_material_cmd_v3 *kek_kck_cmd; 164 bool error, use_rsc_tsc, use_tkip, configure_keys; 165 int wep_key_idx; 166}; 167 168static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw, 169 struct ieee80211_vif *vif, 170 struct ieee80211_sta *sta, 171 struct ieee80211_key_conf *key, 172 void *_data) 173{ 174 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 175 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 176 struct wowlan_key_data *data = _data; 177 struct aes_sc *aes_sc, *aes_tx_sc = NULL; 178 struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL; 179 struct iwl_p1k_cache *rx_p1ks; 180 u8 *rx_mic_key; 181 struct ieee80211_key_seq seq; 182 u32 cur_rx_iv32 = 0; 183 u16 p1k[IWL_P1K_SIZE]; 184 int ret, i; 185 186 switch (key->cipher) { 187 case WLAN_CIPHER_SUITE_WEP40: 188 case WLAN_CIPHER_SUITE_WEP104: { /* hack it for now */ 189 struct { 190 struct iwl_mvm_wep_key_cmd wep_key_cmd; 191 struct iwl_mvm_wep_key wep_key; 192 } __packed wkc = { 193 .wep_key_cmd.mac_id_n_color = 194 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 195 mvmvif->color)), 196 .wep_key_cmd.num_keys = 1, 197 /* firmware sets STA_KEY_FLG_WEP_13BYTES */ 198 .wep_key_cmd.decryption_type = STA_KEY_FLG_WEP, 199 .wep_key.key_index = key->keyidx, 200 .wep_key.key_size = key->keylen, 201 }; 202 203 /* 204 * This will fail -- the key functions don't set support 205 * pairwise WEP keys. However, that's better than silently 206 * failing WoWLAN. Or maybe not? 207 */ 208 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) 209 break; 210 211 memcpy(&wkc.wep_key.key[3], key->key, key->keylen); 212 if (key->keyidx == mvmvif->tx_key_idx) { 213 /* TX key must be at offset 0 */ 214 wkc.wep_key.key_offset = 0; 215 } else { 216 /* others start at 1 */ 217 data->wep_key_idx++; 218 wkc.wep_key.key_offset = data->wep_key_idx; 219 } 220 221 if (data->configure_keys) { 222 mutex_lock(&mvm->mutex); 223 ret = iwl_mvm_send_cmd_pdu(mvm, WEP_KEY, 0, 224 sizeof(wkc), &wkc); 225 data->error = ret != 0; 226 227 mvm->ptk_ivlen = key->iv_len; 228 mvm->ptk_icvlen = key->icv_len; 229 mvm->gtk_ivlen = key->iv_len; 230 mvm->gtk_icvlen = key->icv_len; 231 mutex_unlock(&mvm->mutex); 232 } 233 234 /* don't upload key again */ 235 return; 236 } 237 default: 238 data->error = true; 239 return; 240 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 241 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 242 data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_GCMP); 243 return; 244 case WLAN_CIPHER_SUITE_AES_CMAC: 245 data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_CCM); 246 /* 247 * Ignore CMAC keys -- the WoWLAN firmware doesn't support them 248 * but we also shouldn't abort suspend due to that. It does have 249 * support for the IGTK key renewal, but doesn't really use the 250 * IGTK for anything. This means we could spuriously wake up or 251 * be deauthenticated, but that was considered acceptable. 252 */ 253 return; 254 case WLAN_CIPHER_SUITE_TKIP: 255 if (sta) { 256 u64 pn64; 257 258 tkip_sc = 259 data->rsc_tsc->params.all_tsc_rsc.tkip.unicast_rsc; 260 tkip_tx_sc = 261 &data->rsc_tsc->params.all_tsc_rsc.tkip.tsc; 262 263 rx_p1ks = data->tkip->rx_uni; 264 265 pn64 = atomic64_read(&key->tx_pn); 266 tkip_tx_sc->iv16 = cpu_to_le16(TKIP_PN_TO_IV16(pn64)); 267 tkip_tx_sc->iv32 = cpu_to_le32(TKIP_PN_TO_IV32(pn64)); 268 269 ieee80211_get_tkip_p1k_iv(key, TKIP_PN_TO_IV32(pn64), 270 p1k); 271 iwl_mvm_convert_p1k(p1k, data->tkip->tx.p1k); 272 273 memcpy(data->tkip->mic_keys.tx, 274 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], 275 IWL_MIC_KEY_SIZE); 276 277 rx_mic_key = data->tkip->mic_keys.rx_unicast; 278 } else { 279 tkip_sc = 280 data->rsc_tsc->params.all_tsc_rsc.tkip.multicast_rsc; 281 rx_p1ks = data->tkip->rx_multi; 282 rx_mic_key = data->tkip->mic_keys.rx_mcast; 283 data->kek_kck_cmd->gtk_cipher = 284 cpu_to_le32(STA_KEY_FLG_TKIP); 285 } 286 287 /* 288 * For non-QoS this relies on the fact that both the uCode and 289 * mac80211 use TID 0 (as they need to to avoid replay attacks) 290 * for checking the IV in the frames. 291 */ 292 for (i = 0; i < IWL_NUM_RSC; i++) { 293 ieee80211_get_key_rx_seq(key, i, &seq); 294 tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16); 295 tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32); 296 /* wrapping isn't allowed, AP must rekey */ 297 if (seq.tkip.iv32 > cur_rx_iv32) 298 cur_rx_iv32 = seq.tkip.iv32; 299 } 300 301 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid, 302 cur_rx_iv32, p1k); 303 iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k); 304 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid, 305 cur_rx_iv32 + 1, p1k); 306 iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k); 307 308 memcpy(rx_mic_key, 309 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], 310 IWL_MIC_KEY_SIZE); 311 312 data->use_tkip = true; 313 data->use_rsc_tsc = true; 314 break; 315 case WLAN_CIPHER_SUITE_CCMP: 316 case WLAN_CIPHER_SUITE_GCMP: 317 case WLAN_CIPHER_SUITE_GCMP_256: 318 if (sta) { 319 u64 pn64; 320 321 aes_sc = 322 data->rsc_tsc->params.all_tsc_rsc.aes.unicast_rsc; 323 aes_tx_sc = 324 &data->rsc_tsc->params.all_tsc_rsc.aes.tsc; 325 326 pn64 = atomic64_read(&key->tx_pn); 327 aes_tx_sc->pn = cpu_to_le64(pn64); 328 } else { 329 aes_sc = 330 data->rsc_tsc->params.all_tsc_rsc.aes.multicast_rsc; 331 data->kek_kck_cmd->gtk_cipher = 332 key->cipher == WLAN_CIPHER_SUITE_CCMP ? 333 cpu_to_le32(STA_KEY_FLG_CCM) : 334 cpu_to_le32(STA_KEY_FLG_GCMP); 335 } 336 337 /* 338 * For non-QoS this relies on the fact that both the uCode and 339 * mac80211/our RX code use TID 0 for checking the PN. 340 */ 341 if (sta && iwl_mvm_has_new_rx_api(mvm)) { 342 struct iwl_mvm_sta *mvmsta; 343 struct iwl_mvm_key_pn *ptk_pn; 344 const u8 *pn; 345 346 mvmsta = iwl_mvm_sta_from_mac80211(sta); 347 rcu_read_lock(); 348 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]); 349 if (WARN_ON(!ptk_pn)) { 350 rcu_read_unlock(); 351 break; 352 } 353 354 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 355 pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i, 356 mvm->trans->num_rx_queues); 357 aes_sc[i].pn = cpu_to_le64((u64)pn[5] | 358 ((u64)pn[4] << 8) | 359 ((u64)pn[3] << 16) | 360 ((u64)pn[2] << 24) | 361 ((u64)pn[1] << 32) | 362 ((u64)pn[0] << 40)); 363 } 364 365 rcu_read_unlock(); 366 } else { 367 for (i = 0; i < IWL_NUM_RSC; i++) { 368 u8 *pn = seq.ccmp.pn; 369 370 ieee80211_get_key_rx_seq(key, i, &seq); 371 aes_sc[i].pn = cpu_to_le64((u64)pn[5] | 372 ((u64)pn[4] << 8) | 373 ((u64)pn[3] << 16) | 374 ((u64)pn[2] << 24) | 375 ((u64)pn[1] << 32) | 376 ((u64)pn[0] << 40)); 377 } 378 } 379 data->use_rsc_tsc = true; 380 break; 381 } 382 383 IWL_DEBUG_WOWLAN(mvm, "GTK cipher %d\n", data->kek_kck_cmd->gtk_cipher); 384 385 if (data->configure_keys) { 386 mutex_lock(&mvm->mutex); 387 /* 388 * The D3 firmware hardcodes the key offset 0 as the key it 389 * uses to transmit packets to the AP, i.e. the PTK. 390 */ 391 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) { 392 mvm->ptk_ivlen = key->iv_len; 393 mvm->ptk_icvlen = key->icv_len; 394 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 0); 395 } else { 396 /* 397 * firmware only supports TSC/RSC for a single key, 398 * so if there are multiple keep overwriting them 399 * with new ones -- this relies on mac80211 doing 400 * list_add_tail(). 401 */ 402 mvm->gtk_ivlen = key->iv_len; 403 mvm->gtk_icvlen = key->icv_len; 404 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 1); 405 } 406 mutex_unlock(&mvm->mutex); 407 data->error = ret != 0; 408 } 409} 410 411static int iwl_mvm_send_patterns_v1(struct iwl_mvm *mvm, 412 struct cfg80211_wowlan *wowlan) 413{ 414 struct iwl_wowlan_patterns_cmd_v1 *pattern_cmd; 415 struct iwl_host_cmd cmd = { 416 .id = WOWLAN_PATTERNS, 417 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 418 }; 419 int i, err; 420 421 if (!wowlan->n_patterns) 422 return 0; 423 424 cmd.len[0] = struct_size(pattern_cmd, patterns, wowlan->n_patterns); 425 426 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL); 427 if (!pattern_cmd) 428 return -ENOMEM; 429 430 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns); 431 432 for (i = 0; i < wowlan->n_patterns; i++) { 433 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8); 434 435 memcpy(&pattern_cmd->patterns[i].mask, 436 wowlan->patterns[i].mask, mask_len); 437 memcpy(&pattern_cmd->patterns[i].pattern, 438 wowlan->patterns[i].pattern, 439 wowlan->patterns[i].pattern_len); 440 pattern_cmd->patterns[i].mask_size = mask_len; 441 pattern_cmd->patterns[i].pattern_size = 442 wowlan->patterns[i].pattern_len; 443 } 444 445 cmd.data[0] = pattern_cmd; 446 err = iwl_mvm_send_cmd(mvm, &cmd); 447 kfree(pattern_cmd); 448 return err; 449} 450 451static int iwl_mvm_send_patterns(struct iwl_mvm *mvm, 452 struct cfg80211_wowlan *wowlan) 453{ 454 struct iwl_wowlan_patterns_cmd *pattern_cmd; 455 struct iwl_host_cmd cmd = { 456 .id = WOWLAN_PATTERNS, 457 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 458 }; 459 int i, err; 460 461 if (!wowlan->n_patterns) 462 return 0; 463 464 cmd.len[0] = sizeof(*pattern_cmd) + 465 wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern_v2); 466 467 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL); 468 if (!pattern_cmd) 469 return -ENOMEM; 470 471 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns); 472 473 for (i = 0; i < wowlan->n_patterns; i++) { 474 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8); 475 476 pattern_cmd->patterns[i].pattern_type = 477 WOWLAN_PATTERN_TYPE_BITMASK; 478 479 memcpy(&pattern_cmd->patterns[i].u.bitmask.mask, 480 wowlan->patterns[i].mask, mask_len); 481 memcpy(&pattern_cmd->patterns[i].u.bitmask.pattern, 482 wowlan->patterns[i].pattern, 483 wowlan->patterns[i].pattern_len); 484 pattern_cmd->patterns[i].u.bitmask.mask_size = mask_len; 485 pattern_cmd->patterns[i].u.bitmask.pattern_size = 486 wowlan->patterns[i].pattern_len; 487 } 488 489 cmd.data[0] = pattern_cmd; 490 err = iwl_mvm_send_cmd(mvm, &cmd); 491 kfree(pattern_cmd); 492 return err; 493} 494 495static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 496 struct ieee80211_sta *ap_sta) 497{ 498 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 499 struct ieee80211_chanctx_conf *ctx; 500 u8 chains_static, chains_dynamic; 501 struct cfg80211_chan_def chandef; 502 int ret, i; 503 struct iwl_binding_cmd_v1 binding_cmd = {}; 504 struct iwl_time_quota_cmd quota_cmd = {}; 505 struct iwl_time_quota_data *quota; 506 u32 status; 507 508 if (WARN_ON_ONCE(iwl_mvm_is_cdb_supported(mvm))) 509 return -EINVAL; 510 511 /* add back the PHY */ 512 if (WARN_ON(!mvmvif->phy_ctxt)) 513 return -EINVAL; 514 515 rcu_read_lock(); 516 ctx = rcu_dereference(vif->chanctx_conf); 517 if (WARN_ON(!ctx)) { 518 rcu_read_unlock(); 519 return -EINVAL; 520 } 521 chandef = ctx->def; 522 chains_static = ctx->rx_chains_static; 523 chains_dynamic = ctx->rx_chains_dynamic; 524 rcu_read_unlock(); 525 526 ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt, &chandef, 527 chains_static, chains_dynamic); 528 if (ret) 529 return ret; 530 531 /* add back the MAC */ 532 mvmvif->uploaded = false; 533 534 if (WARN_ON(!vif->bss_conf.assoc)) 535 return -EINVAL; 536 537 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 538 if (ret) 539 return ret; 540 541 /* add back binding - XXX refactor? */ 542 binding_cmd.id_and_color = 543 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id, 544 mvmvif->phy_ctxt->color)); 545 binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD); 546 binding_cmd.phy = 547 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id, 548 mvmvif->phy_ctxt->color)); 549 binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 550 mvmvif->color)); 551 for (i = 1; i < MAX_MACS_IN_BINDING; i++) 552 binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID); 553 554 status = 0; 555 ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD, 556 IWL_BINDING_CMD_SIZE_V1, &binding_cmd, 557 &status); 558 if (ret) { 559 IWL_ERR(mvm, "Failed to add binding: %d\n", ret); 560 return ret; 561 } 562 563 if (status) { 564 IWL_ERR(mvm, "Binding command failed: %u\n", status); 565 return -EIO; 566 } 567 568 ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false, 0); 569 if (ret) 570 return ret; 571 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], ap_sta); 572 573 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 574 if (ret) 575 return ret; 576 577 /* and some quota */ 578 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, 0); 579 quota->id_and_color = 580 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id, 581 mvmvif->phy_ctxt->color)); 582 quota->quota = cpu_to_le32(IWL_MVM_MAX_QUOTA); 583 quota->max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA); 584 585 for (i = 1; i < MAX_BINDINGS; i++) { 586 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, i); 587 quota->id_and_color = cpu_to_le32(FW_CTXT_INVALID); 588 } 589 590 ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0, 591 iwl_mvm_quota_cmd_size(mvm), "a_cmd); 592 if (ret) 593 IWL_ERR(mvm, "Failed to send quota: %d\n", ret); 594 595 if (iwl_mvm_is_lar_supported(mvm) && iwl_mvm_init_fw_regd(mvm)) 596 IWL_ERR(mvm, "Failed to initialize D3 LAR information\n"); 597 598 return 0; 599} 600 601static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm, 602 struct ieee80211_vif *vif) 603{ 604 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 605 struct iwl_nonqos_seq_query_cmd query_cmd = { 606 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET), 607 .mac_id_n_color = 608 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 609 mvmvif->color)), 610 }; 611 struct iwl_host_cmd cmd = { 612 .id = NON_QOS_TX_COUNTER_CMD, 613 .flags = CMD_WANT_SKB, 614 }; 615 int err; 616 u32 size; 617 618 cmd.data[0] = &query_cmd; 619 cmd.len[0] = sizeof(query_cmd); 620 621 err = iwl_mvm_send_cmd(mvm, &cmd); 622 if (err) 623 return err; 624 625 size = iwl_rx_packet_payload_len(cmd.resp_pkt); 626 if (size < sizeof(__le16)) { 627 err = -EINVAL; 628 } else { 629 err = le16_to_cpup((__le16 *)cmd.resp_pkt->data); 630 /* firmware returns next, not last-used seqno */ 631 err = (u16) (err - 0x10); 632 } 633 634 iwl_free_resp(&cmd); 635 return err; 636} 637 638void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 639{ 640 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 641 struct iwl_nonqos_seq_query_cmd query_cmd = { 642 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET), 643 .mac_id_n_color = 644 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 645 mvmvif->color)), 646 .value = cpu_to_le16(mvmvif->seqno), 647 }; 648 649 /* return if called during restart, not resume from D3 */ 650 if (!mvmvif->seqno_valid) 651 return; 652 653 mvmvif->seqno_valid = false; 654 655 if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0, 656 sizeof(query_cmd), &query_cmd)) 657 IWL_ERR(mvm, "failed to set non-QoS seqno\n"); 658} 659 660static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm) 661{ 662 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 663 664 iwl_mvm_stop_device(mvm); 665 /* 666 * Set the HW restart bit -- this is mostly true as we're 667 * going to load new firmware and reprogram that, though 668 * the reprogramming is going to be manual to avoid adding 669 * all the MACs that aren't support. 670 * We don't have to clear up everything though because the 671 * reprogramming is manual. When we resume, we'll actually 672 * go through a proper restart sequence again to switch 673 * back to the runtime firmware image. 674 */ 675 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 676 677 /* the fw is reset, so all the keys are cleared */ 678 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); 679 680 mvm->ptk_ivlen = 0; 681 mvm->ptk_icvlen = 0; 682 mvm->ptk_ivlen = 0; 683 mvm->ptk_icvlen = 0; 684 685 return iwl_mvm_load_d3_fw(mvm); 686} 687 688static int 689iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm, 690 struct cfg80211_wowlan *wowlan, 691 struct iwl_wowlan_config_cmd *wowlan_config_cmd, 692 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif, 693 struct ieee80211_sta *ap_sta) 694{ 695 int ret; 696 struct iwl_mvm_sta *mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta); 697 698 /* TODO: wowlan_config_cmd->wowlan_ba_teardown_tids */ 699 700 wowlan_config_cmd->is_11n_connection = 701 ap_sta->ht_cap.ht_supported; 702 wowlan_config_cmd->flags = ENABLE_L3_FILTERING | 703 ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING; 704 705 /* Query the last used seqno and set it */ 706 ret = iwl_mvm_get_last_nonqos_seq(mvm, vif); 707 if (ret < 0) 708 return ret; 709 710 wowlan_config_cmd->non_qos_seq = cpu_to_le16(ret); 711 712 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, wowlan_config_cmd); 713 714 if (wowlan->disconnect) 715 wowlan_config_cmd->wakeup_filter |= 716 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS | 717 IWL_WOWLAN_WAKEUP_LINK_CHANGE); 718 if (wowlan->magic_pkt) 719 wowlan_config_cmd->wakeup_filter |= 720 cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET); 721 if (wowlan->gtk_rekey_failure) 722 wowlan_config_cmd->wakeup_filter |= 723 cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL); 724 if (wowlan->eap_identity_req) 725 wowlan_config_cmd->wakeup_filter |= 726 cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ); 727 if (wowlan->four_way_handshake) 728 wowlan_config_cmd->wakeup_filter |= 729 cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE); 730 if (wowlan->n_patterns) 731 wowlan_config_cmd->wakeup_filter |= 732 cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH); 733 734 if (wowlan->rfkill_release) 735 wowlan_config_cmd->wakeup_filter |= 736 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT); 737 738 if (wowlan->tcp) { 739 /* 740 * Set the "link change" (really "link lost") flag as well 741 * since that implies losing the TCP connection. 742 */ 743 wowlan_config_cmd->wakeup_filter |= 744 cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS | 745 IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE | 746 IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET | 747 IWL_WOWLAN_WAKEUP_LINK_CHANGE); 748 } 749 750 if (wowlan->any) { 751 wowlan_config_cmd->wakeup_filter |= 752 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS | 753 IWL_WOWLAN_WAKEUP_LINK_CHANGE | 754 IWL_WOWLAN_WAKEUP_RX_FRAME | 755 IWL_WOWLAN_WAKEUP_BCN_FILTERING); 756 } 757 758 return 0; 759} 760 761static int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm, 762 struct ieee80211_vif *vif, 763 u32 cmd_flags) 764{ 765 struct iwl_wowlan_kek_kck_material_cmd_v3 kek_kck_cmd = {}; 766 struct iwl_wowlan_tkip_params_cmd tkip_cmd = {}; 767 bool unified = fw_has_capa(&mvm->fw->ucode_capa, 768 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 769 struct wowlan_key_data key_data = { 770 .configure_keys = !unified, 771 .use_rsc_tsc = false, 772 .tkip = &tkip_cmd, 773 .use_tkip = false, 774 .kek_kck_cmd = &kek_kck_cmd, 775 }; 776 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 777 int ret; 778 u8 cmd_ver; 779 size_t cmd_size; 780 781 key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL); 782 if (!key_data.rsc_tsc) 783 return -ENOMEM; 784 785 /* 786 * if we have to configure keys, call ieee80211_iter_keys(), 787 * as we need non-atomic context in order to take the 788 * required locks. 789 */ 790 /* 791 * Note that currently we don't propagate cmd_flags 792 * to the iterator. In case of key_data.configure_keys, 793 * all the configured commands are SYNC, and 794 * iwl_mvm_wowlan_program_keys() will take care of 795 * locking/unlocking mvm->mutex. 796 */ 797 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_program_keys, 798 &key_data); 799 800 if (key_data.error) { 801 ret = -EIO; 802 goto out; 803 } 804 805 if (key_data.use_rsc_tsc) { 806 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, 807 WOWLAN_TSC_RSC_PARAM, 808 IWL_FW_CMD_VER_UNKNOWN); 809 int size; 810 811 if (ver == 4) { 812 size = sizeof(*key_data.rsc_tsc); 813 key_data.rsc_tsc->sta_id = 814 cpu_to_le32(mvmvif->ap_sta_id); 815 816 } else if (ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN) { 817 size = sizeof(key_data.rsc_tsc->params); 818 } else { 819 ret = 0; 820 WARN_ON_ONCE(1); 821 goto out; 822 } 823 824 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM, 825 cmd_flags, 826 size, 827 key_data.rsc_tsc); 828 829 if (ret) 830 goto out; 831 } 832 833 if (key_data.use_tkip && 834 !fw_has_api(&mvm->fw->ucode_capa, 835 IWL_UCODE_TLV_API_TKIP_MIC_KEYS)) { 836 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, 837 WOWLAN_TKIP_PARAM, 838 IWL_FW_CMD_VER_UNKNOWN); 839 int size; 840 841 if (ver == 2) { 842 size = sizeof(tkip_cmd); 843 key_data.tkip->sta_id = 844 cpu_to_le32(mvmvif->ap_sta_id); 845 } else if (ver == 1 || ver == IWL_FW_CMD_VER_UNKNOWN) { 846 size = sizeof(struct iwl_wowlan_tkip_params_cmd_ver_1); 847 } else { 848 ret = -EINVAL; 849 WARN_ON_ONCE(1); 850 goto out; 851 } 852 853 /* send relevant data according to CMD version */ 854 ret = iwl_mvm_send_cmd_pdu(mvm, 855 WOWLAN_TKIP_PARAM, 856 cmd_flags, size, 857 &tkip_cmd); 858 if (ret) 859 goto out; 860 } 861 862 /* configure rekey data only if offloaded rekey is supported (d3) */ 863 if (mvmvif->rekey_data.valid) { 864 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, 865 IWL_ALWAYS_LONG_GROUP, 866 WOWLAN_KEK_KCK_MATERIAL, 867 IWL_FW_CMD_VER_UNKNOWN); 868 if (WARN_ON(cmd_ver != 2 && cmd_ver != 3 && 869 cmd_ver != IWL_FW_CMD_VER_UNKNOWN)) 870 return -EINVAL; 871 if (cmd_ver == 3) 872 cmd_size = sizeof(struct iwl_wowlan_kek_kck_material_cmd_v3); 873 else 874 cmd_size = sizeof(struct iwl_wowlan_kek_kck_material_cmd_v2); 875 876 memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck, 877 mvmvif->rekey_data.kck_len); 878 kek_kck_cmd.kck_len = cpu_to_le16(mvmvif->rekey_data.kck_len); 879 memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek, 880 mvmvif->rekey_data.kek_len); 881 kek_kck_cmd.kek_len = cpu_to_le16(mvmvif->rekey_data.kek_len); 882 kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr; 883 kek_kck_cmd.akm = cpu_to_le32(mvmvif->rekey_data.akm); 884 885 IWL_DEBUG_WOWLAN(mvm, "setting akm %d\n", 886 mvmvif->rekey_data.akm); 887 888 ret = iwl_mvm_send_cmd_pdu(mvm, 889 WOWLAN_KEK_KCK_MATERIAL, cmd_flags, 890 cmd_size, 891 &kek_kck_cmd); 892 if (ret) 893 goto out; 894 } 895 ret = 0; 896out: 897 kfree(key_data.rsc_tsc); 898 return ret; 899} 900 901static int 902iwl_mvm_wowlan_config(struct iwl_mvm *mvm, 903 struct cfg80211_wowlan *wowlan, 904 struct iwl_wowlan_config_cmd *wowlan_config_cmd, 905 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif, 906 struct ieee80211_sta *ap_sta) 907{ 908 int ret; 909 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 910 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 911 912 mvm->offload_tid = wowlan_config_cmd->offloading_tid; 913 914 if (!unified_image) { 915 ret = iwl_mvm_switch_to_d3(mvm); 916 if (ret) 917 return ret; 918 919 ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta); 920 if (ret) 921 return ret; 922 } 923 924 /* 925 * This needs to be unlocked due to lock ordering 926 * constraints. Since we're in the suspend path 927 * that isn't really a problem though. 928 */ 929 mutex_unlock(&mvm->mutex); 930 ret = iwl_mvm_wowlan_config_key_params(mvm, vif, CMD_ASYNC); 931 mutex_lock(&mvm->mutex); 932 if (ret) 933 return ret; 934 935 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0, 936 sizeof(*wowlan_config_cmd), 937 wowlan_config_cmd); 938 if (ret) 939 return ret; 940 941 if (fw_has_api(&mvm->fw->ucode_capa, 942 IWL_UCODE_TLV_API_WOWLAN_TCP_SYN_WAKE)) 943 ret = iwl_mvm_send_patterns(mvm, wowlan); 944 else 945 ret = iwl_mvm_send_patterns_v1(mvm, wowlan); 946 if (ret) 947 return ret; 948 949 return iwl_mvm_send_proto_offload(mvm, vif, false, true, 0); 950} 951 952static int 953iwl_mvm_netdetect_config(struct iwl_mvm *mvm, 954 struct cfg80211_wowlan *wowlan, 955 struct cfg80211_sched_scan_request *nd_config, 956 struct ieee80211_vif *vif) 957{ 958 struct iwl_wowlan_config_cmd wowlan_config_cmd = {}; 959 int ret; 960 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 961 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 962 963 if (!unified_image) { 964 ret = iwl_mvm_switch_to_d3(mvm); 965 if (ret) 966 return ret; 967 } else { 968 /* In theory, we wouldn't have to stop a running sched 969 * scan in order to start another one (for 970 * net-detect). But in practice this doesn't seem to 971 * work properly, so stop any running sched_scan now. 972 */ 973 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 974 if (ret) 975 return ret; 976 } 977 978 /* rfkill release can be either for wowlan or netdetect */ 979 if (wowlan->rfkill_release) 980 wowlan_config_cmd.wakeup_filter |= 981 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT); 982 983 wowlan_config_cmd.sta_id = mvm->aux_sta.sta_id; 984 985 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0, 986 sizeof(wowlan_config_cmd), 987 &wowlan_config_cmd); 988 if (ret) 989 return ret; 990 991 ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies, 992 IWL_MVM_SCAN_NETDETECT); 993 if (ret) 994 return ret; 995 996 if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels)) 997 return -EBUSY; 998 999 /* save the sched scan matchsets... */ 1000 if (nd_config->n_match_sets) { 1001 mvm->nd_match_sets = kmemdup(nd_config->match_sets, 1002 sizeof(*nd_config->match_sets) * 1003 nd_config->n_match_sets, 1004 GFP_KERNEL); 1005 if (mvm->nd_match_sets) 1006 mvm->n_nd_match_sets = nd_config->n_match_sets; 1007 } 1008 1009 /* ...and the sched scan channels for later reporting */ 1010 mvm->nd_channels = kmemdup(nd_config->channels, 1011 sizeof(*nd_config->channels) * 1012 nd_config->n_channels, 1013 GFP_KERNEL); 1014 if (mvm->nd_channels) 1015 mvm->n_nd_channels = nd_config->n_channels; 1016 1017 return 0; 1018} 1019 1020static void iwl_mvm_free_nd(struct iwl_mvm *mvm) 1021{ 1022 kfree(mvm->nd_match_sets); 1023 mvm->nd_match_sets = NULL; 1024 mvm->n_nd_match_sets = 0; 1025 kfree(mvm->nd_channels); 1026 mvm->nd_channels = NULL; 1027 mvm->n_nd_channels = 0; 1028} 1029 1030static int __iwl_mvm_suspend(struct ieee80211_hw *hw, 1031 struct cfg80211_wowlan *wowlan, 1032 bool test) 1033{ 1034 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1035 struct ieee80211_vif *vif = NULL; 1036 struct iwl_mvm_vif *mvmvif = NULL; 1037 struct ieee80211_sta *ap_sta = NULL; 1038 struct iwl_d3_manager_config d3_cfg_cmd_data = { 1039 /* 1040 * Program the minimum sleep time to 10 seconds, as many 1041 * platforms have issues processing a wakeup signal while 1042 * still being in the process of suspending. 1043 */ 1044 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000), 1045 }; 1046 struct iwl_host_cmd d3_cfg_cmd = { 1047 .id = D3_CONFIG_CMD, 1048 .flags = CMD_WANT_SKB, 1049 .data[0] = &d3_cfg_cmd_data, 1050 .len[0] = sizeof(d3_cfg_cmd_data), 1051 }; 1052 int ret; 1053 int len __maybe_unused; 1054 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 1055 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1056 1057 if (!wowlan) { 1058 /* 1059 * mac80211 shouldn't get here, but for D3 test 1060 * it doesn't warrant a warning 1061 */ 1062 WARN_ON(!test); 1063 return -EINVAL; 1064 } 1065 1066 mutex_lock(&mvm->mutex); 1067 1068 set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 1069 1070 vif = iwl_mvm_get_bss_vif(mvm); 1071 if (IS_ERR_OR_NULL(vif)) { 1072 ret = 1; 1073 goto out_noreset; 1074 } 1075 1076 mvmvif = iwl_mvm_vif_from_mac80211(vif); 1077 1078 if (mvmvif->ap_sta_id == IWL_MVM_INVALID_STA) { 1079 /* if we're not associated, this must be netdetect */ 1080 if (!wowlan->nd_config) { 1081 ret = 1; 1082 goto out_noreset; 1083 } 1084 1085 ret = iwl_mvm_netdetect_config( 1086 mvm, wowlan, wowlan->nd_config, vif); 1087 if (ret) 1088 goto out; 1089 1090 mvm->net_detect = true; 1091 } else { 1092 struct iwl_wowlan_config_cmd wowlan_config_cmd = { 1093 .offloading_tid = 0, 1094 }; 1095 1096 wowlan_config_cmd.sta_id = mvmvif->ap_sta_id; 1097 1098 ap_sta = rcu_dereference_protected( 1099 mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], 1100 lockdep_is_held(&mvm->mutex)); 1101 if (IS_ERR_OR_NULL(ap_sta)) { 1102 ret = -EINVAL; 1103 goto out_noreset; 1104 } 1105 1106 ret = iwl_mvm_sta_ensure_queue( 1107 mvm, ap_sta->txq[wowlan_config_cmd.offloading_tid]); 1108 if (ret) 1109 goto out_noreset; 1110 1111 ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd, 1112 vif, mvmvif, ap_sta); 1113 if (ret) 1114 goto out_noreset; 1115 ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd, 1116 vif, mvmvif, ap_sta); 1117 if (ret) 1118 goto out; 1119 1120 mvm->net_detect = false; 1121 } 1122 1123 ret = iwl_mvm_power_update_device(mvm); 1124 if (ret) 1125 goto out; 1126 1127 ret = iwl_mvm_power_update_mac(mvm); 1128 if (ret) 1129 goto out; 1130 1131#ifdef CONFIG_IWLWIFI_DEBUGFS 1132 if (mvm->d3_wake_sysassert) 1133 d3_cfg_cmd_data.wakeup_flags |= 1134 cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR); 1135#endif 1136 1137 /* 1138 * Prior to 9000 device family the driver needs to stop the dbg 1139 * recording before entering D3. In later devices the FW stops the 1140 * recording automatically. 1141 */ 1142 if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_9000) 1143 iwl_fw_dbg_stop_restart_recording(&mvm->fwrt, NULL, true); 1144 1145 /* must be last -- this switches firmware state */ 1146 ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd); 1147 if (ret) 1148 goto out; 1149#ifdef CONFIG_IWLWIFI_DEBUGFS 1150 len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt); 1151 if (len >= sizeof(u32)) { 1152 mvm->d3_test_pme_ptr = 1153 le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data); 1154 } 1155#endif 1156 iwl_free_resp(&d3_cfg_cmd); 1157 1158 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1159 1160 ret = iwl_trans_d3_suspend(mvm->trans, test, !unified_image); 1161 out: 1162 if (ret < 0) { 1163 iwl_mvm_free_nd(mvm); 1164 1165 if (!unified_image) { 1166 if (mvm->fw_restart > 0) { 1167 mvm->fw_restart--; 1168 ieee80211_restart_hw(mvm->hw); 1169 } 1170 } 1171 1172 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 1173 } 1174 out_noreset: 1175 mutex_unlock(&mvm->mutex); 1176 1177 return ret; 1178} 1179 1180int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) 1181{ 1182 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1183 struct iwl_trans *trans = mvm->trans; 1184 int ret; 1185 1186 iwl_mvm_pause_tcm(mvm, true); 1187 1188 iwl_fw_runtime_suspend(&mvm->fwrt); 1189 1190 ret = iwl_trans_suspend(trans); 1191 if (ret) 1192 return ret; 1193 1194 trans->system_pm_mode = IWL_PLAT_PM_MODE_D3; 1195 1196 return __iwl_mvm_suspend(hw, wowlan, false); 1197} 1198 1199/* converted data from the different status responses */ 1200struct iwl_wowlan_status_data { 1201 u16 pattern_number; 1202 u16 qos_seq_ctr[8]; 1203 u32 wakeup_reasons; 1204 u32 wake_packet_length; 1205 u32 wake_packet_bufsize; 1206 const u8 *wake_packet; 1207}; 1208 1209static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm, 1210 struct ieee80211_vif *vif, 1211 struct iwl_wowlan_status_data *status) 1212{ 1213 struct sk_buff *pkt = NULL; 1214 struct cfg80211_wowlan_wakeup wakeup = { 1215 .pattern_idx = -1, 1216 }; 1217 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; 1218 u32 reasons = status->wakeup_reasons; 1219 1220 if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) { 1221 wakeup_report = NULL; 1222 goto report; 1223 } 1224 1225 pm_wakeup_event(mvm->dev, 0); 1226 1227 if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET) 1228 wakeup.magic_pkt = true; 1229 1230 if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN) 1231 wakeup.pattern_idx = 1232 status->pattern_number; 1233 1234 if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 1235 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)) 1236 wakeup.disconnect = true; 1237 1238 if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE) 1239 wakeup.gtk_rekey_failure = true; 1240 1241 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 1242 wakeup.rfkill_release = true; 1243 1244 if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST) 1245 wakeup.eap_identity_req = true; 1246 1247 if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE) 1248 wakeup.four_way_handshake = true; 1249 1250 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS) 1251 wakeup.tcp_connlost = true; 1252 1253 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE) 1254 wakeup.tcp_nomoretokens = true; 1255 1256 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET) 1257 wakeup.tcp_match = true; 1258 1259 if (status->wake_packet_bufsize) { 1260 int pktsize = status->wake_packet_bufsize; 1261 int pktlen = status->wake_packet_length; 1262 const u8 *pktdata = status->wake_packet; 1263 struct ieee80211_hdr *hdr = (void *)pktdata; 1264 int truncated = pktlen - pktsize; 1265 1266 /* this would be a firmware bug */ 1267 if (WARN_ON_ONCE(truncated < 0)) 1268 truncated = 0; 1269 1270 if (ieee80211_is_data(hdr->frame_control)) { 1271 int hdrlen = ieee80211_hdrlen(hdr->frame_control); 1272 int ivlen = 0, icvlen = 4; /* also FCS */ 1273 1274 pkt = alloc_skb(pktsize, GFP_KERNEL); 1275 if (!pkt) 1276 goto report; 1277 1278 skb_put_data(pkt, pktdata, hdrlen); 1279 pktdata += hdrlen; 1280 pktsize -= hdrlen; 1281 1282 if (ieee80211_has_protected(hdr->frame_control)) { 1283 /* 1284 * This is unlocked and using gtk_i(c)vlen, 1285 * but since everything is under RTNL still 1286 * that's not really a problem - changing 1287 * it would be difficult. 1288 */ 1289 if (is_multicast_ether_addr(hdr->addr1)) { 1290 ivlen = mvm->gtk_ivlen; 1291 icvlen += mvm->gtk_icvlen; 1292 } else { 1293 ivlen = mvm->ptk_ivlen; 1294 icvlen += mvm->ptk_icvlen; 1295 } 1296 } 1297 1298 /* if truncated, FCS/ICV is (partially) gone */ 1299 if (truncated >= icvlen) { 1300 icvlen = 0; 1301 truncated -= icvlen; 1302 } else { 1303 icvlen -= truncated; 1304 truncated = 0; 1305 } 1306 1307 pktsize -= ivlen + icvlen; 1308 pktdata += ivlen; 1309 1310 skb_put_data(pkt, pktdata, pktsize); 1311 1312 if (ieee80211_data_to_8023(pkt, vif->addr, vif->type)) 1313 goto report; 1314 wakeup.packet = pkt->data; 1315 wakeup.packet_present_len = pkt->len; 1316 wakeup.packet_len = pkt->len - truncated; 1317 wakeup.packet_80211 = false; 1318 } else { 1319 int fcslen = 4; 1320 1321 if (truncated >= 4) { 1322 truncated -= 4; 1323 fcslen = 0; 1324 } else { 1325 fcslen -= truncated; 1326 truncated = 0; 1327 } 1328 pktsize -= fcslen; 1329 wakeup.packet = status->wake_packet; 1330 wakeup.packet_present_len = pktsize; 1331 wakeup.packet_len = pktlen - truncated; 1332 wakeup.packet_80211 = true; 1333 } 1334 } 1335 1336 report: 1337 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); 1338 kfree_skb(pkt); 1339} 1340 1341static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc, 1342 struct ieee80211_key_seq *seq) 1343{ 1344 u64 pn; 1345 1346 pn = le64_to_cpu(sc->pn); 1347 seq->ccmp.pn[0] = pn >> 40; 1348 seq->ccmp.pn[1] = pn >> 32; 1349 seq->ccmp.pn[2] = pn >> 24; 1350 seq->ccmp.pn[3] = pn >> 16; 1351 seq->ccmp.pn[4] = pn >> 8; 1352 seq->ccmp.pn[5] = pn; 1353} 1354 1355static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc, 1356 struct ieee80211_key_seq *seq) 1357{ 1358 seq->tkip.iv32 = le32_to_cpu(sc->iv32); 1359 seq->tkip.iv16 = le16_to_cpu(sc->iv16); 1360} 1361 1362static void iwl_mvm_set_aes_rx_seq(struct iwl_mvm *mvm, struct aes_sc *scs, 1363 struct ieee80211_sta *sta, 1364 struct ieee80211_key_conf *key) 1365{ 1366 int tid; 1367 1368 BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS); 1369 1370 if (sta && iwl_mvm_has_new_rx_api(mvm)) { 1371 struct iwl_mvm_sta *mvmsta; 1372 struct iwl_mvm_key_pn *ptk_pn; 1373 1374 mvmsta = iwl_mvm_sta_from_mac80211(sta); 1375 1376 rcu_read_lock(); 1377 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]); 1378 if (WARN_ON(!ptk_pn)) { 1379 rcu_read_unlock(); 1380 return; 1381 } 1382 1383 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1384 struct ieee80211_key_seq seq = {}; 1385 int i; 1386 1387 iwl_mvm_aes_sc_to_seq(&scs[tid], &seq); 1388 ieee80211_set_key_rx_seq(key, tid, &seq); 1389 for (i = 1; i < mvm->trans->num_rx_queues; i++) 1390 memcpy(ptk_pn->q[i].pn[tid], 1391 seq.ccmp.pn, IEEE80211_CCMP_PN_LEN); 1392 } 1393 rcu_read_unlock(); 1394 } else { 1395 for (tid = 0; tid < IWL_NUM_RSC; tid++) { 1396 struct ieee80211_key_seq seq = {}; 1397 1398 iwl_mvm_aes_sc_to_seq(&scs[tid], &seq); 1399 ieee80211_set_key_rx_seq(key, tid, &seq); 1400 } 1401 } 1402} 1403 1404static void iwl_mvm_set_tkip_rx_seq(struct tkip_sc *scs, 1405 struct ieee80211_key_conf *key) 1406{ 1407 int tid; 1408 1409 BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS); 1410 1411 for (tid = 0; tid < IWL_NUM_RSC; tid++) { 1412 struct ieee80211_key_seq seq = {}; 1413 1414 iwl_mvm_tkip_sc_to_seq(&scs[tid], &seq); 1415 ieee80211_set_key_rx_seq(key, tid, &seq); 1416 } 1417} 1418 1419static void iwl_mvm_set_key_rx_seq(struct iwl_mvm *mvm, 1420 struct ieee80211_key_conf *key, 1421 struct iwl_wowlan_status *status) 1422{ 1423 union iwl_all_tsc_rsc *rsc = &status->gtk[0].rsc.all_tsc_rsc; 1424 1425 switch (key->cipher) { 1426 case WLAN_CIPHER_SUITE_CCMP: 1427 case WLAN_CIPHER_SUITE_GCMP: 1428 case WLAN_CIPHER_SUITE_GCMP_256: 1429 iwl_mvm_set_aes_rx_seq(mvm, rsc->aes.multicast_rsc, NULL, key); 1430 break; 1431 case WLAN_CIPHER_SUITE_TKIP: 1432 iwl_mvm_set_tkip_rx_seq(rsc->tkip.multicast_rsc, key); 1433 break; 1434 default: 1435 WARN_ON(1); 1436 } 1437} 1438 1439struct iwl_mvm_d3_gtk_iter_data { 1440 struct iwl_mvm *mvm; 1441 struct iwl_wowlan_status *status; 1442 void *last_gtk; 1443 u32 cipher; 1444 bool find_phase, unhandled_cipher; 1445 int num_keys; 1446}; 1447 1448static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw, 1449 struct ieee80211_vif *vif, 1450 struct ieee80211_sta *sta, 1451 struct ieee80211_key_conf *key, 1452 void *_data) 1453{ 1454 struct iwl_mvm_d3_gtk_iter_data *data = _data; 1455 1456 if (data->unhandled_cipher) 1457 return; 1458 1459 switch (key->cipher) { 1460 case WLAN_CIPHER_SUITE_WEP40: 1461 case WLAN_CIPHER_SUITE_WEP104: 1462 /* ignore WEP completely, nothing to do */ 1463 return; 1464 case WLAN_CIPHER_SUITE_CCMP: 1465 case WLAN_CIPHER_SUITE_GCMP: 1466 case WLAN_CIPHER_SUITE_GCMP_256: 1467 case WLAN_CIPHER_SUITE_TKIP: 1468 /* we support these */ 1469 break; 1470 default: 1471 /* everything else (even CMAC for MFP) - disconnect from AP */ 1472 data->unhandled_cipher = true; 1473 return; 1474 } 1475 1476 data->num_keys++; 1477 1478 /* 1479 * pairwise key - update sequence counters only; 1480 * note that this assumes no TDLS sessions are active 1481 */ 1482 if (sta) { 1483 struct ieee80211_key_seq seq = {}; 1484 union iwl_all_tsc_rsc *sc = 1485 &data->status->gtk[0].rsc.all_tsc_rsc; 1486 1487 if (data->find_phase) 1488 return; 1489 1490 switch (key->cipher) { 1491 case WLAN_CIPHER_SUITE_CCMP: 1492 case WLAN_CIPHER_SUITE_GCMP: 1493 case WLAN_CIPHER_SUITE_GCMP_256: 1494 iwl_mvm_set_aes_rx_seq(data->mvm, sc->aes.unicast_rsc, 1495 sta, key); 1496 atomic64_set(&key->tx_pn, le64_to_cpu(sc->aes.tsc.pn)); 1497 break; 1498 case WLAN_CIPHER_SUITE_TKIP: 1499 iwl_mvm_tkip_sc_to_seq(&sc->tkip.tsc, &seq); 1500 iwl_mvm_set_tkip_rx_seq(sc->tkip.unicast_rsc, key); 1501 atomic64_set(&key->tx_pn, 1502 (u64)seq.tkip.iv16 | 1503 ((u64)seq.tkip.iv32 << 16)); 1504 break; 1505 } 1506 1507 /* that's it for this key */ 1508 return; 1509 } 1510 1511 if (data->find_phase) { 1512 data->last_gtk = key; 1513 data->cipher = key->cipher; 1514 return; 1515 } 1516 1517 if (data->status->num_of_gtk_rekeys) 1518 ieee80211_remove_key(key); 1519 else if (data->last_gtk == key) 1520 iwl_mvm_set_key_rx_seq(data->mvm, key, data->status); 1521} 1522 1523static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm, 1524 struct ieee80211_vif *vif, 1525 struct iwl_wowlan_status *status) 1526{ 1527 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1528 struct iwl_mvm_d3_gtk_iter_data gtkdata = { 1529 .mvm = mvm, 1530 .status = status, 1531 }; 1532 u32 disconnection_reasons = 1533 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 1534 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH; 1535 1536 if (!status || !vif->bss_conf.bssid) 1537 return false; 1538 1539 if (le32_to_cpu(status->wakeup_reasons) & disconnection_reasons) 1540 return false; 1541 1542 /* find last GTK that we used initially, if any */ 1543 gtkdata.find_phase = true; 1544 ieee80211_iter_keys(mvm->hw, vif, 1545 iwl_mvm_d3_update_keys, >kdata); 1546 /* not trying to keep connections with MFP/unhandled ciphers */ 1547 if (gtkdata.unhandled_cipher) 1548 return false; 1549 if (!gtkdata.num_keys) 1550 goto out; 1551 if (!gtkdata.last_gtk) 1552 return false; 1553 1554 /* 1555 * invalidate all other GTKs that might still exist and update 1556 * the one that we used 1557 */ 1558 gtkdata.find_phase = false; 1559 ieee80211_iter_keys(mvm->hw, vif, 1560 iwl_mvm_d3_update_keys, >kdata); 1561 1562 IWL_DEBUG_WOWLAN(mvm, "num of GTK rekeying %d\n", 1563 le32_to_cpu(status->num_of_gtk_rekeys)); 1564 if (status->num_of_gtk_rekeys) { 1565 struct ieee80211_key_conf *key; 1566 struct { 1567 struct ieee80211_key_conf conf; 1568 u8 key[32]; 1569 } conf = { 1570 .conf.cipher = gtkdata.cipher, 1571 .conf.keyidx = 1572 iwlmvm_wowlan_gtk_idx(&status->gtk[0]), 1573 }; 1574 __be64 replay_ctr; 1575 1576 IWL_DEBUG_WOWLAN(mvm, 1577 "Received from FW GTK cipher %d, key index %d\n", 1578 conf.conf.cipher, conf.conf.keyidx); 1579 switch (gtkdata.cipher) { 1580 case WLAN_CIPHER_SUITE_CCMP: 1581 case WLAN_CIPHER_SUITE_GCMP: 1582 BUILD_BUG_ON(WLAN_KEY_LEN_CCMP != WLAN_KEY_LEN_GCMP); 1583 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_CCMP); 1584 conf.conf.keylen = WLAN_KEY_LEN_CCMP; 1585 memcpy(conf.conf.key, status->gtk[0].key, 1586 WLAN_KEY_LEN_CCMP); 1587 break; 1588 case WLAN_CIPHER_SUITE_GCMP_256: 1589 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_GCMP_256); 1590 conf.conf.keylen = WLAN_KEY_LEN_GCMP_256; 1591 memcpy(conf.conf.key, status->gtk[0].key, 1592 WLAN_KEY_LEN_GCMP_256); 1593 break; 1594 case WLAN_CIPHER_SUITE_TKIP: 1595 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_TKIP); 1596 conf.conf.keylen = WLAN_KEY_LEN_TKIP; 1597 memcpy(conf.conf.key, status->gtk[0].key, 16); 1598 /* leave TX MIC key zeroed, we don't use it anyway */ 1599 memcpy(conf.conf.key + 1600 NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 1601 status->gtk[0].tkip_mic_key, 8); 1602 break; 1603 } 1604 1605 key = ieee80211_gtk_rekey_add(vif, &conf.conf); 1606 if (IS_ERR(key)) 1607 return false; 1608 iwl_mvm_set_key_rx_seq(mvm, key, status); 1609 1610 replay_ctr = 1611 cpu_to_be64(le64_to_cpu(status->replay_ctr)); 1612 1613 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid, 1614 (void *)&replay_ctr, GFP_KERNEL); 1615 } 1616 1617out: 1618 mvmvif->seqno_valid = true; 1619 /* +0x10 because the set API expects next-to-use, not last-used */ 1620 mvmvif->seqno = le16_to_cpu(status->non_qos_seq_ctr) + 0x10; 1621 1622 return true; 1623} 1624 1625/* Occasionally, templates would be nice. This is one of those times ... */ 1626#define iwl_mvm_parse_wowlan_status_common(_ver) \ 1627static struct iwl_wowlan_status * \ 1628iwl_mvm_parse_wowlan_status_common_ ## _ver(struct iwl_mvm *mvm, \ 1629 void *_data, int len) \ 1630{ \ 1631 struct iwl_wowlan_status *status; \ 1632 struct iwl_wowlan_status_ ##_ver *data = _data; \ 1633 int data_size; \ 1634 \ 1635 if (len < sizeof(*data)) { \ 1636 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \ 1637 return ERR_PTR(-EIO); \ 1638 } \ 1639 \ 1640 data_size = ALIGN(le32_to_cpu(data->wake_packet_bufsize), 4); \ 1641 if (len != sizeof(*data) + data_size) { \ 1642 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \ 1643 return ERR_PTR(-EIO); \ 1644 } \ 1645 \ 1646 status = kzalloc(sizeof(*status) + data_size, GFP_KERNEL); \ 1647 if (!status) \ 1648 return ERR_PTR(-ENOMEM); \ 1649 \ 1650 /* copy all the common fields */ \ 1651 status->replay_ctr = data->replay_ctr; \ 1652 status->pattern_number = data->pattern_number; \ 1653 status->non_qos_seq_ctr = data->non_qos_seq_ctr; \ 1654 memcpy(status->qos_seq_ctr, data->qos_seq_ctr, \ 1655 sizeof(status->qos_seq_ctr)); \ 1656 status->wakeup_reasons = data->wakeup_reasons; \ 1657 status->num_of_gtk_rekeys = data->num_of_gtk_rekeys; \ 1658 status->received_beacons = data->received_beacons; \ 1659 status->wake_packet_length = data->wake_packet_length; \ 1660 status->wake_packet_bufsize = data->wake_packet_bufsize; \ 1661 memcpy(status->wake_packet, data->wake_packet, \ 1662 le32_to_cpu(status->wake_packet_bufsize)); \ 1663 \ 1664 return status; \ 1665} 1666 1667iwl_mvm_parse_wowlan_status_common(v6) 1668iwl_mvm_parse_wowlan_status_common(v7) 1669iwl_mvm_parse_wowlan_status_common(v9) 1670 1671struct iwl_wowlan_status *iwl_mvm_send_wowlan_get_status(struct iwl_mvm *mvm) 1672{ 1673 struct iwl_wowlan_status *status; 1674 struct iwl_host_cmd cmd = { 1675 .id = WOWLAN_GET_STATUSES, 1676 .flags = CMD_WANT_SKB, 1677 }; 1678 int ret, len; 1679 u8 notif_ver; 1680 1681 lockdep_assert_held(&mvm->mutex); 1682 1683 ret = iwl_mvm_send_cmd(mvm, &cmd); 1684 if (ret) { 1685 IWL_ERR(mvm, "failed to query wakeup status (%d)\n", ret); 1686 return ERR_PTR(ret); 1687 } 1688 1689 len = iwl_rx_packet_payload_len(cmd.resp_pkt); 1690 1691 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */ 1692 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, 1693 WOWLAN_GET_STATUSES, 7); 1694 1695 if (!fw_has_api(&mvm->fw->ucode_capa, 1696 IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL)) { 1697 struct iwl_wowlan_status_v6 *v6 = (void *)cmd.resp_pkt->data; 1698 1699 status = iwl_mvm_parse_wowlan_status_common_v6(mvm, 1700 cmd.resp_pkt->data, 1701 len); 1702 if (IS_ERR(status)) 1703 goto out_free_resp; 1704 1705 BUILD_BUG_ON(sizeof(v6->gtk.decrypt_key) > 1706 sizeof(status->gtk[0].key)); 1707 BUILD_BUG_ON(sizeof(v6->gtk.tkip_mic_key) > 1708 sizeof(status->gtk[0].tkip_mic_key)); 1709 1710 /* copy GTK info to the right place */ 1711 memcpy(status->gtk[0].key, v6->gtk.decrypt_key, 1712 sizeof(v6->gtk.decrypt_key)); 1713 memcpy(status->gtk[0].tkip_mic_key, v6->gtk.tkip_mic_key, 1714 sizeof(v6->gtk.tkip_mic_key)); 1715 memcpy(&status->gtk[0].rsc, &v6->gtk.rsc, 1716 sizeof(status->gtk[0].rsc)); 1717 1718 /* hardcode the key length to 16 since v6 only supports 16 */ 1719 status->gtk[0].key_len = 16; 1720 1721 /* 1722 * The key index only uses 2 bits (values 0 to 3) and 1723 * we always set bit 7 which means this is the 1724 * currently used key. 1725 */ 1726 status->gtk[0].key_flags = v6->gtk.key_index | BIT(7); 1727 } else if (notif_ver == 7) { 1728 struct iwl_wowlan_status_v7 *v7 = (void *)cmd.resp_pkt->data; 1729 1730 status = iwl_mvm_parse_wowlan_status_common_v7(mvm, 1731 cmd.resp_pkt->data, 1732 len); 1733 if (IS_ERR(status)) 1734 goto out_free_resp; 1735 1736 status->gtk[0] = v7->gtk[0]; 1737 status->igtk[0] = v7->igtk[0]; 1738 } else if (notif_ver == 9) { 1739 struct iwl_wowlan_status_v9 *v9 = (void *)cmd.resp_pkt->data; 1740 1741 status = iwl_mvm_parse_wowlan_status_common_v9(mvm, 1742 cmd.resp_pkt->data, 1743 len); 1744 if (IS_ERR(status)) 1745 goto out_free_resp; 1746 1747 status->gtk[0] = v9->gtk[0]; 1748 status->igtk[0] = v9->igtk[0]; 1749 1750 status->tid_tear_down = v9->tid_tear_down; 1751 } else { 1752 IWL_ERR(mvm, 1753 "Firmware advertises unknown WoWLAN status response %d!\n", 1754 notif_ver); 1755 status = ERR_PTR(-EIO); 1756 } 1757 1758out_free_resp: 1759 iwl_free_resp(&cmd); 1760 return status; 1761} 1762 1763static struct iwl_wowlan_status * 1764iwl_mvm_get_wakeup_status(struct iwl_mvm *mvm) 1765{ 1766 int ret; 1767 1768 /* only for tracing for now */ 1769 ret = iwl_mvm_send_cmd_pdu(mvm, OFFLOADS_QUERY_CMD, 0, 0, NULL); 1770 if (ret) 1771 IWL_ERR(mvm, "failed to query offload statistics (%d)\n", ret); 1772 1773 return iwl_mvm_send_wowlan_get_status(mvm); 1774} 1775 1776/* releases the MVM mutex */ 1777static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm, 1778 struct ieee80211_vif *vif) 1779{ 1780 struct iwl_wowlan_status_data status; 1781 struct iwl_wowlan_status *fw_status; 1782 int i; 1783 bool keep; 1784 struct iwl_mvm_sta *mvm_ap_sta; 1785 1786 fw_status = iwl_mvm_get_wakeup_status(mvm); 1787 if (IS_ERR_OR_NULL(fw_status)) 1788 goto out_unlock; 1789 1790 IWL_DEBUG_WOWLAN(mvm, "wakeup reason 0x%x\n", 1791 le32_to_cpu(fw_status->wakeup_reasons)); 1792 1793 status.pattern_number = le16_to_cpu(fw_status->pattern_number); 1794 for (i = 0; i < 8; i++) 1795 status.qos_seq_ctr[i] = 1796 le16_to_cpu(fw_status->qos_seq_ctr[i]); 1797 status.wakeup_reasons = le32_to_cpu(fw_status->wakeup_reasons); 1798 status.wake_packet_length = 1799 le32_to_cpu(fw_status->wake_packet_length); 1800 status.wake_packet_bufsize = 1801 le32_to_cpu(fw_status->wake_packet_bufsize); 1802 status.wake_packet = fw_status->wake_packet; 1803 1804 /* still at hard-coded place 0 for D3 image */ 1805 mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, 0); 1806 if (!mvm_ap_sta) 1807 goto out_free; 1808 1809 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1810 u16 seq = status.qos_seq_ctr[i]; 1811 /* firmware stores last-used value, we store next value */ 1812 seq += 0x10; 1813 mvm_ap_sta->tid_data[i].seq_number = seq; 1814 } 1815 1816 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000) { 1817 i = mvm->offload_tid; 1818 iwl_trans_set_q_ptrs(mvm->trans, 1819 mvm_ap_sta->tid_data[i].txq_id, 1820 mvm_ap_sta->tid_data[i].seq_number >> 4); 1821 } 1822 1823 /* now we have all the data we need, unlock to avoid mac80211 issues */ 1824 mutex_unlock(&mvm->mutex); 1825 1826 iwl_mvm_report_wakeup_reasons(mvm, vif, &status); 1827 1828 keep = iwl_mvm_setup_connection_keep(mvm, vif, fw_status); 1829 1830 kfree(fw_status); 1831 return keep; 1832 1833out_free: 1834 kfree(fw_status); 1835out_unlock: 1836 mutex_unlock(&mvm->mutex); 1837 return false; 1838} 1839 1840#define ND_QUERY_BUF_LEN (sizeof(struct iwl_scan_offload_profile_match) * \ 1841 IWL_SCAN_MAX_PROFILES) 1842 1843struct iwl_mvm_nd_query_results { 1844 u32 matched_profiles; 1845 u8 matches[ND_QUERY_BUF_LEN]; 1846}; 1847 1848static int 1849iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm, 1850 struct iwl_mvm_nd_query_results *results) 1851{ 1852 struct iwl_scan_offload_profiles_query *query; 1853 struct iwl_host_cmd cmd = { 1854 .id = SCAN_OFFLOAD_PROFILES_QUERY_CMD, 1855 .flags = CMD_WANT_SKB, 1856 }; 1857 int ret, len; 1858 size_t query_len, matches_len; 1859 int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw); 1860 1861 ret = iwl_mvm_send_cmd(mvm, &cmd); 1862 if (ret) { 1863 IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret); 1864 return ret; 1865 } 1866 1867 if (fw_has_api(&mvm->fw->ucode_capa, 1868 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 1869 query_len = sizeof(struct iwl_scan_offload_profiles_query); 1870 matches_len = sizeof(struct iwl_scan_offload_profile_match) * 1871 max_profiles; 1872 } else { 1873 query_len = sizeof(struct iwl_scan_offload_profiles_query_v1); 1874 matches_len = sizeof(struct iwl_scan_offload_profile_match_v1) * 1875 max_profiles; 1876 } 1877 1878 len = iwl_rx_packet_payload_len(cmd.resp_pkt); 1879 if (len < query_len) { 1880 IWL_ERR(mvm, "Invalid scan offload profiles query response!\n"); 1881 ret = -EIO; 1882 goto out_free_resp; 1883 } 1884 1885 query = (void *)cmd.resp_pkt->data; 1886 1887 results->matched_profiles = le32_to_cpu(query->matched_profiles); 1888 memcpy(results->matches, query->matches, matches_len); 1889 1890#ifdef CONFIG_IWLWIFI_DEBUGFS 1891 mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done); 1892#endif 1893 1894out_free_resp: 1895 iwl_free_resp(&cmd); 1896 return ret; 1897} 1898 1899static int iwl_mvm_query_num_match_chans(struct iwl_mvm *mvm, 1900 struct iwl_mvm_nd_query_results *query, 1901 int idx) 1902{ 1903 int n_chans = 0, i; 1904 1905 if (fw_has_api(&mvm->fw->ucode_capa, 1906 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 1907 struct iwl_scan_offload_profile_match *matches = 1908 (struct iwl_scan_offload_profile_match *)query->matches; 1909 1910 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; i++) 1911 n_chans += hweight8(matches[idx].matching_channels[i]); 1912 } else { 1913 struct iwl_scan_offload_profile_match_v1 *matches = 1914 (struct iwl_scan_offload_profile_match_v1 *)query->matches; 1915 1916 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1; i++) 1917 n_chans += hweight8(matches[idx].matching_channels[i]); 1918 } 1919 1920 return n_chans; 1921} 1922 1923static void iwl_mvm_query_set_freqs(struct iwl_mvm *mvm, 1924 struct iwl_mvm_nd_query_results *query, 1925 struct cfg80211_wowlan_nd_match *match, 1926 int idx) 1927{ 1928 int i; 1929 1930 if (fw_has_api(&mvm->fw->ucode_capa, 1931 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 1932 struct iwl_scan_offload_profile_match *matches = 1933 (struct iwl_scan_offload_profile_match *)query->matches; 1934 1935 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; i++) 1936 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8))) 1937 match->channels[match->n_channels++] = 1938 mvm->nd_channels[i]->center_freq; 1939 } else { 1940 struct iwl_scan_offload_profile_match_v1 *matches = 1941 (struct iwl_scan_offload_profile_match_v1 *)query->matches; 1942 1943 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1 * 8; i++) 1944 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8))) 1945 match->channels[match->n_channels++] = 1946 mvm->nd_channels[i]->center_freq; 1947 } 1948} 1949 1950static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm, 1951 struct ieee80211_vif *vif) 1952{ 1953 struct cfg80211_wowlan_nd_info *net_detect = NULL; 1954 struct cfg80211_wowlan_wakeup wakeup = { 1955 .pattern_idx = -1, 1956 }; 1957 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; 1958 struct iwl_mvm_nd_query_results query; 1959 struct iwl_wowlan_status *fw_status; 1960 unsigned long matched_profiles; 1961 u32 reasons = 0; 1962 int i, n_matches, ret; 1963 1964 fw_status = iwl_mvm_get_wakeup_status(mvm); 1965 if (!IS_ERR_OR_NULL(fw_status)) { 1966 reasons = le32_to_cpu(fw_status->wakeup_reasons); 1967 kfree(fw_status); 1968 } 1969 1970 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 1971 wakeup.rfkill_release = true; 1972 1973 if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) 1974 goto out; 1975 1976 ret = iwl_mvm_netdetect_query_results(mvm, &query); 1977 if (ret || !query.matched_profiles) { 1978 wakeup_report = NULL; 1979 goto out; 1980 } 1981 1982 matched_profiles = query.matched_profiles; 1983 if (mvm->n_nd_match_sets) { 1984 n_matches = hweight_long(matched_profiles); 1985 } else { 1986 IWL_ERR(mvm, "no net detect match information available\n"); 1987 n_matches = 0; 1988 } 1989 1990 net_detect = kzalloc(struct_size(net_detect, matches, n_matches), 1991 GFP_KERNEL); 1992 if (!net_detect || !n_matches) 1993 goto out_report_nd; 1994 1995 for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) { 1996 struct cfg80211_wowlan_nd_match *match; 1997 int idx, n_channels = 0; 1998 1999 n_channels = iwl_mvm_query_num_match_chans(mvm, &query, i); 2000 2001 match = kzalloc(struct_size(match, channels, n_channels), 2002 GFP_KERNEL); 2003 if (!match) 2004 goto out_report_nd; 2005 2006 net_detect->matches[net_detect->n_matches++] = match; 2007 2008 /* We inverted the order of the SSIDs in the scan 2009 * request, so invert the index here. 2010 */ 2011 idx = mvm->n_nd_match_sets - i - 1; 2012 match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len; 2013 memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid, 2014 match->ssid.ssid_len); 2015 2016 if (mvm->n_nd_channels < n_channels) 2017 continue; 2018 2019 iwl_mvm_query_set_freqs(mvm, &query, match, i); 2020 } 2021 2022out_report_nd: 2023 wakeup.net_detect = net_detect; 2024out: 2025 iwl_mvm_free_nd(mvm); 2026 2027 mutex_unlock(&mvm->mutex); 2028 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); 2029 2030 if (net_detect) { 2031 for (i = 0; i < net_detect->n_matches; i++) 2032 kfree(net_detect->matches[i]); 2033 kfree(net_detect); 2034 } 2035} 2036 2037static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac, 2038 struct ieee80211_vif *vif) 2039{ 2040 /* skip the one we keep connection on */ 2041 if (data == vif) 2042 return; 2043 2044 if (vif->type == NL80211_IFTYPE_STATION) 2045 ieee80211_resume_disconnect(vif); 2046} 2047 2048static bool iwl_mvm_rt_status(struct iwl_trans *trans, u32 base, u32 *err_id) 2049{ 2050 struct error_table_start { 2051 /* cf. struct iwl_error_event_table */ 2052 u32 valid; 2053 __le32 err_id; 2054 } err_info; 2055 2056 if (!base) 2057 return false; 2058 2059 iwl_trans_read_mem_bytes(trans, base, 2060 &err_info, sizeof(err_info)); 2061 if (err_info.valid && err_id) 2062 *err_id = le32_to_cpu(err_info.err_id); 2063 2064 return !!err_info.valid; 2065} 2066 2067static bool iwl_mvm_check_rt_status(struct iwl_mvm *mvm, 2068 struct ieee80211_vif *vif) 2069{ 2070 u32 err_id; 2071 2072 /* check for lmac1 error */ 2073 if (iwl_mvm_rt_status(mvm->trans, 2074 mvm->trans->dbg.lmac_error_event_table[0], 2075 &err_id)) { 2076 if (err_id == RF_KILL_INDICATOR_FOR_WOWLAN) { 2077 struct cfg80211_wowlan_wakeup wakeup = { 2078 .rfkill_release = true, 2079 }; 2080 ieee80211_report_wowlan_wakeup(vif, &wakeup, 2081 GFP_KERNEL); 2082 } 2083 return true; 2084 } 2085 2086 /* check if we have lmac2 set and check for error */ 2087 if (iwl_mvm_rt_status(mvm->trans, 2088 mvm->trans->dbg.lmac_error_event_table[1], NULL)) 2089 return true; 2090 2091 /* check for umac error */ 2092 if (iwl_mvm_rt_status(mvm->trans, 2093 mvm->trans->dbg.umac_error_event_table, NULL)) 2094 return true; 2095 2096 return false; 2097} 2098 2099static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test) 2100{ 2101 struct ieee80211_vif *vif = NULL; 2102 int ret = 1; 2103 enum iwl_d3_status d3_status; 2104 bool keep = false; 2105 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 2106 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 2107 bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa, 2108 IWL_UCODE_TLV_CAPA_D0I3_END_FIRST); 2109 2110 mutex_lock(&mvm->mutex); 2111 2112 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 2113 2114 /* get the BSS vif pointer again */ 2115 vif = iwl_mvm_get_bss_vif(mvm); 2116 if (IS_ERR_OR_NULL(vif)) 2117 goto err; 2118 2119 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt); 2120 2121 if (iwl_mvm_check_rt_status(mvm, vif)) { 2122 set_bit(STATUS_FW_ERROR, &mvm->trans->status); 2123 iwl_mvm_dump_nic_error_log(mvm); 2124 iwl_dbg_tlv_time_point(&mvm->fwrt, 2125 IWL_FW_INI_TIME_POINT_FW_ASSERT, NULL); 2126 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert, 2127 false, 0); 2128 ret = 1; 2129 goto err; 2130 } 2131 2132 iwl_dbg_tlv_time_point(&mvm->fwrt, IWL_FW_INI_TIME_POINT_HOST_D3_END, 2133 NULL); 2134 2135 ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, !unified_image); 2136 if (ret) 2137 goto err; 2138 2139 if (d3_status != IWL_D3_STATUS_ALIVE) { 2140 IWL_INFO(mvm, "Device was reset during suspend\n"); 2141 goto err; 2142 } 2143 2144 if (d0i3_first) { 2145 struct iwl_host_cmd cmd = { 2146 .id = D0I3_END_CMD, 2147 .flags = CMD_WANT_SKB, 2148 }; 2149 int len; 2150 2151 ret = iwl_mvm_send_cmd(mvm, &cmd); 2152 if (ret < 0) { 2153 IWL_ERR(mvm, "Failed to send D0I3_END_CMD first (%d)\n", 2154 ret); 2155 goto err; 2156 } 2157 switch (mvm->cmd_ver.d0i3_resp) { 2158 case 0: 2159 break; 2160 case 1: 2161 len = iwl_rx_packet_payload_len(cmd.resp_pkt); 2162 if (len != sizeof(u32)) { 2163 IWL_ERR(mvm, 2164 "Error with D0I3_END_CMD response size (%d)\n", 2165 len); 2166 goto err; 2167 } 2168 if (IWL_D0I3_RESET_REQUIRE & 2169 le32_to_cpu(*(__le32 *)cmd.resp_pkt->data)) { 2170 iwl_write32(mvm->trans, CSR_RESET, 2171 CSR_RESET_REG_FLAG_FORCE_NMI); 2172 iwl_free_resp(&cmd); 2173 } 2174 break; 2175 default: 2176 WARN_ON(1); 2177 } 2178 } 2179 2180 /* 2181 * Query the current location and source from the D3 firmware so we 2182 * can play it back when we re-intiailize the D0 firmware 2183 */ 2184 iwl_mvm_update_changed_regdom(mvm); 2185 2186 /* Re-configure PPAG settings */ 2187 iwl_mvm_ppag_send_cmd(mvm); 2188 2189 if (!unified_image) 2190 /* Re-configure default SAR profile */ 2191 iwl_mvm_sar_select_profile(mvm, 1, 1); 2192 2193 if (mvm->net_detect) { 2194 /* If this is a non-unified image, we restart the FW, 2195 * so no need to stop the netdetect scan. If that 2196 * fails, continue and try to get the wake-up reasons, 2197 * but trigger a HW restart by keeping a failure code 2198 * in ret. 2199 */ 2200 if (unified_image) 2201 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT, 2202 false); 2203 2204 iwl_mvm_query_netdetect_reasons(mvm, vif); 2205 /* has unlocked the mutex, so skip that */ 2206 goto out; 2207 } else { 2208 keep = iwl_mvm_query_wakeup_reasons(mvm, vif); 2209#ifdef CONFIG_IWLWIFI_DEBUGFS 2210 if (keep) 2211 mvm->keep_vif = vif; 2212#endif 2213 /* has unlocked the mutex, so skip that */ 2214 goto out_iterate; 2215 } 2216 2217err: 2218 iwl_mvm_free_nd(mvm); 2219 mutex_unlock(&mvm->mutex); 2220 2221out_iterate: 2222 if (!test) 2223 ieee80211_iterate_active_interfaces_rtnl(mvm->hw, 2224 IEEE80211_IFACE_ITER_NORMAL, 2225 iwl_mvm_d3_disconnect_iter, keep ? vif : NULL); 2226 2227out: 2228 /* no need to reset the device in unified images, if successful */ 2229 if (unified_image && !ret) { 2230 /* nothing else to do if we already sent D0I3_END_CMD */ 2231 if (d0i3_first) 2232 return 0; 2233 2234 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL); 2235 if (!ret) 2236 return 0; 2237 } 2238 2239 /* 2240 * Reconfigure the device in one of the following cases: 2241 * 1. We are not using a unified image 2242 * 2. We are using a unified image but had an error while exiting D3 2243 */ 2244 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); 2245 2246 return 1; 2247} 2248 2249static int iwl_mvm_resume_d3(struct iwl_mvm *mvm) 2250{ 2251 iwl_trans_resume(mvm->trans); 2252 2253 return __iwl_mvm_resume(mvm, false); 2254} 2255 2256int iwl_mvm_resume(struct ieee80211_hw *hw) 2257{ 2258 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2259 int ret; 2260 2261 ret = iwl_mvm_resume_d3(mvm); 2262 2263 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED; 2264 2265 iwl_mvm_resume_tcm(mvm); 2266 2267 iwl_fw_runtime_resume(&mvm->fwrt); 2268 2269 return ret; 2270} 2271 2272void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled) 2273{ 2274 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2275 2276 device_set_wakeup_enable(mvm->trans->dev, enabled); 2277} 2278 2279#ifdef CONFIG_IWLWIFI_DEBUGFS 2280static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file) 2281{ 2282 struct iwl_mvm *mvm = inode->i_private; 2283 int err; 2284 2285 if (mvm->d3_test_active) 2286 return -EBUSY; 2287 2288 file->private_data = inode->i_private; 2289 2290 synchronize_net(); 2291 2292 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_D3; 2293 2294 iwl_mvm_pause_tcm(mvm, true); 2295 2296 iwl_fw_runtime_suspend(&mvm->fwrt); 2297 2298 /* start pseudo D3 */ 2299 rtnl_lock(); 2300 err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true); 2301 rtnl_unlock(); 2302 if (err > 0) 2303 err = -EINVAL; 2304 if (err) 2305 return err; 2306 2307 mvm->d3_test_active = true; 2308 mvm->keep_vif = NULL; 2309 return 0; 2310} 2311 2312static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf, 2313 size_t count, loff_t *ppos) 2314{ 2315 struct iwl_mvm *mvm = file->private_data; 2316 u32 pme_asserted; 2317 2318 while (true) { 2319 /* read pme_ptr if available */ 2320 if (mvm->d3_test_pme_ptr) { 2321 pme_asserted = iwl_trans_read_mem32(mvm->trans, 2322 mvm->d3_test_pme_ptr); 2323 if (pme_asserted) 2324 break; 2325 } 2326 2327 if (msleep_interruptible(100)) 2328 break; 2329 } 2330 2331 return 0; 2332} 2333 2334static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac, 2335 struct ieee80211_vif *vif) 2336{ 2337 /* skip the one we keep connection on */ 2338 if (_data == vif) 2339 return; 2340 2341 if (vif->type == NL80211_IFTYPE_STATION) 2342 ieee80211_connection_loss(vif); 2343} 2344 2345static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file) 2346{ 2347 struct iwl_mvm *mvm = inode->i_private; 2348 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 2349 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 2350 2351 mvm->d3_test_active = false; 2352 2353 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt); 2354 2355 rtnl_lock(); 2356 __iwl_mvm_resume(mvm, true); 2357 rtnl_unlock(); 2358 2359 iwl_mvm_resume_tcm(mvm); 2360 2361 iwl_fw_runtime_resume(&mvm->fwrt); 2362 2363 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED; 2364 2365 iwl_abort_notification_waits(&mvm->notif_wait); 2366 if (!unified_image) { 2367 int remaining_time = 10; 2368 2369 ieee80211_restart_hw(mvm->hw); 2370 2371 /* wait for restart and disconnect all interfaces */ 2372 while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 2373 remaining_time > 0) { 2374 remaining_time--; 2375 msleep(1000); 2376 } 2377 2378 if (remaining_time == 0) 2379 IWL_ERR(mvm, "Timed out waiting for HW restart!\n"); 2380 } 2381 2382 ieee80211_iterate_active_interfaces_atomic( 2383 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 2384 iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif); 2385 2386 return 0; 2387} 2388 2389const struct file_operations iwl_dbgfs_d3_test_ops = { 2390 .llseek = no_llseek, 2391 .open = iwl_mvm_d3_test_open, 2392 .read = iwl_mvm_d3_test_read, 2393 .release = iwl_mvm_d3_test_release, 2394}; 2395#endif 2396