1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2014, 2018-2024 Intel Corporation 4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH 5 * Copyright (C) 2016-2017 Intel Deutschland GmbH 6 */ 7 #include <linux/etherdevice.h> 8 #include <linux/ip.h> 9 #include <linux/fs.h> 10 #include <net/cfg80211.h> 11 #include <net/ipv6.h> 12 #include <net/tcp.h> 13 #include <net/addrconf.h> 14 #include "iwl-modparams.h" 15 #include "fw-api.h" 16 #include "mvm.h" 17 #include "fw/img.h" 18 19 void iwl_mvm_set_rekey_data(struct ieee80211_hw *hw, 20 struct ieee80211_vif *vif, 21 struct cfg80211_gtk_rekey_data *data) 22 { 23 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 24 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 25 26 mutex_lock(&mvm->mutex); 27 28 mvmvif->rekey_data.kek_len = data->kek_len; 29 mvmvif->rekey_data.kck_len = data->kck_len; 30 memcpy(mvmvif->rekey_data.kek, data->kek, data->kek_len); 31 memcpy(mvmvif->rekey_data.kck, data->kck, data->kck_len); 32 mvmvif->rekey_data.akm = data->akm & 0xFF; 33 mvmvif->rekey_data.replay_ctr = 34 cpu_to_le64(be64_to_cpup((const __be64 *)data->replay_ctr)); 35 mvmvif->rekey_data.valid = true; 36 37 mutex_unlock(&mvm->mutex); 38 } 39 40 #if IS_ENABLED(CONFIG_IPV6) 41 void iwl_mvm_ipv6_addr_change(struct ieee80211_hw *hw, 42 struct ieee80211_vif *vif, 43 struct inet6_dev *idev) 44 { 45 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 46 struct inet6_ifaddr *ifa; 47 int idx = 0; 48 49 memset(mvmvif->tentative_addrs, 0, sizeof(mvmvif->tentative_addrs)); 50 51 read_lock_bh(&idev->lock); 52 list_for_each_entry(ifa, &idev->addr_list, if_list) { 53 mvmvif->target_ipv6_addrs[idx] = ifa->addr; 54 if (ifa->flags & IFA_F_TENTATIVE) 55 __set_bit(idx, mvmvif->tentative_addrs); 56 idx++; 57 if (idx >= IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_MAX) 58 break; 59 } 60 read_unlock_bh(&idev->lock); 61 62 mvmvif->num_target_ipv6_addrs = idx; 63 } 64 #endif 65 66 void iwl_mvm_set_default_unicast_key(struct ieee80211_hw *hw, 67 struct ieee80211_vif *vif, int idx) 68 { 69 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 70 71 mvmvif->tx_key_idx = idx; 72 } 73 74 static void iwl_mvm_convert_p1k(u16 *p1k, __le16 *out) 75 { 76 int i; 77 78 for (i = 0; i < IWL_P1K_SIZE; i++) 79 out[i] = cpu_to_le16(p1k[i]); 80 } 81 82 static const u8 *iwl_mvm_find_max_pn(struct ieee80211_key_conf *key, 83 struct iwl_mvm_key_pn *ptk_pn, 84 struct ieee80211_key_seq *seq, 85 int tid, int queues) 86 { 87 const u8 *ret = seq->ccmp.pn; 88 int i; 89 90 /* get the PN from mac80211, used on the default queue */ 91 ieee80211_get_key_rx_seq(key, tid, seq); 92 93 /* and use the internal data for the other queues */ 94 for (i = 1; i < queues; i++) { 95 const u8 *tmp = ptk_pn->q[i].pn[tid]; 96 97 if (memcmp(ret, tmp, IEEE80211_CCMP_PN_LEN) <= 0) 98 ret = tmp; 99 } 100 101 return ret; 102 } 103 104 struct wowlan_key_reprogram_data { 105 bool error; 106 int wep_key_idx; 107 }; 108 109 static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw, 110 struct ieee80211_vif *vif, 111 struct ieee80211_sta *sta, 112 struct ieee80211_key_conf *key, 113 void *_data) 114 { 115 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 116 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 117 struct wowlan_key_reprogram_data *data = _data; 118 int ret; 119 120 switch (key->cipher) { 121 case WLAN_CIPHER_SUITE_WEP40: 122 case WLAN_CIPHER_SUITE_WEP104: { /* hack it for now */ 123 struct { 124 struct iwl_mvm_wep_key_cmd wep_key_cmd; 125 struct iwl_mvm_wep_key wep_key; 126 } __packed wkc = { 127 .wep_key_cmd.mac_id_n_color = 128 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 129 mvmvif->color)), 130 .wep_key_cmd.num_keys = 1, 131 /* firmware sets STA_KEY_FLG_WEP_13BYTES */ 132 .wep_key_cmd.decryption_type = STA_KEY_FLG_WEP, 133 .wep_key.key_index = key->keyidx, 134 .wep_key.key_size = key->keylen, 135 }; 136 137 /* 138 * This will fail -- the key functions don't set support 139 * pairwise WEP keys. However, that's better than silently 140 * failing WoWLAN. Or maybe not? 141 */ 142 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) 143 break; 144 145 memcpy(&wkc.wep_key.key[3], key->key, key->keylen); 146 if (key->keyidx == mvmvif->tx_key_idx) { 147 /* TX key must be at offset 0 */ 148 wkc.wep_key.key_offset = 0; 149 } else { 150 /* others start at 1 */ 151 data->wep_key_idx++; 152 wkc.wep_key.key_offset = data->wep_key_idx; 153 } 154 155 mutex_lock(&mvm->mutex); 156 ret = iwl_mvm_send_cmd_pdu(mvm, WEP_KEY, 0, sizeof(wkc), &wkc); 157 data->error = ret != 0; 158 159 mvm->ptk_ivlen = key->iv_len; 160 mvm->ptk_icvlen = key->icv_len; 161 mvm->gtk_ivlen = key->iv_len; 162 mvm->gtk_icvlen = key->icv_len; 163 mutex_unlock(&mvm->mutex); 164 165 /* don't upload key again */ 166 return; 167 } 168 default: 169 data->error = true; 170 return; 171 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 172 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 173 return; 174 case WLAN_CIPHER_SUITE_AES_CMAC: 175 /* 176 * Ignore CMAC keys -- the WoWLAN firmware doesn't support them 177 * but we also shouldn't abort suspend due to that. It does have 178 * support for the IGTK key renewal, but doesn't really use the 179 * IGTK for anything. This means we could spuriously wake up or 180 * be deauthenticated, but that was considered acceptable. 181 */ 182 return; 183 case WLAN_CIPHER_SUITE_TKIP: 184 case WLAN_CIPHER_SUITE_CCMP: 185 case WLAN_CIPHER_SUITE_GCMP: 186 case WLAN_CIPHER_SUITE_GCMP_256: 187 break; 188 } 189 190 mutex_lock(&mvm->mutex); 191 /* 192 * The D3 firmware hardcodes the key offset 0 as the key it 193 * uses to transmit packets to the AP, i.e. the PTK. 194 */ 195 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) { 196 mvm->ptk_ivlen = key->iv_len; 197 mvm->ptk_icvlen = key->icv_len; 198 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 0); 199 } else { 200 /* 201 * firmware only supports TSC/RSC for a single key, 202 * so if there are multiple keep overwriting them 203 * with new ones -- this relies on mac80211 doing 204 * list_add_tail(). 205 */ 206 mvm->gtk_ivlen = key->iv_len; 207 mvm->gtk_icvlen = key->icv_len; 208 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 1); 209 } 210 mutex_unlock(&mvm->mutex); 211 data->error = ret != 0; 212 } 213 214 struct wowlan_key_rsc_tsc_data { 215 struct iwl_wowlan_rsc_tsc_params_cmd_v4 *rsc_tsc; 216 bool have_rsc_tsc; 217 }; 218 219 static void iwl_mvm_wowlan_get_rsc_tsc_data(struct ieee80211_hw *hw, 220 struct ieee80211_vif *vif, 221 struct ieee80211_sta *sta, 222 struct ieee80211_key_conf *key, 223 void *_data) 224 { 225 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 226 struct wowlan_key_rsc_tsc_data *data = _data; 227 struct aes_sc *aes_sc; 228 struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL; 229 struct ieee80211_key_seq seq; 230 int i; 231 232 switch (key->cipher) { 233 default: 234 break; 235 case WLAN_CIPHER_SUITE_TKIP: 236 if (sta) { 237 u64 pn64; 238 239 tkip_sc = 240 data->rsc_tsc->params.all_tsc_rsc.tkip.unicast_rsc; 241 tkip_tx_sc = 242 &data->rsc_tsc->params.all_tsc_rsc.tkip.tsc; 243 244 pn64 = atomic64_read(&key->tx_pn); 245 tkip_tx_sc->iv16 = cpu_to_le16(TKIP_PN_TO_IV16(pn64)); 246 tkip_tx_sc->iv32 = cpu_to_le32(TKIP_PN_TO_IV32(pn64)); 247 } else { 248 tkip_sc = 249 data->rsc_tsc->params.all_tsc_rsc.tkip.multicast_rsc; 250 } 251 252 /* 253 * For non-QoS this relies on the fact that both the uCode and 254 * mac80211 use TID 0 (as they need to to avoid replay attacks) 255 * for checking the IV in the frames. 256 */ 257 for (i = 0; i < IWL_NUM_RSC; i++) { 258 ieee80211_get_key_rx_seq(key, i, &seq); 259 tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16); 260 tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32); 261 } 262 263 data->have_rsc_tsc = true; 264 break; 265 case WLAN_CIPHER_SUITE_CCMP: 266 case WLAN_CIPHER_SUITE_GCMP: 267 case WLAN_CIPHER_SUITE_GCMP_256: 268 if (sta) { 269 struct aes_sc *aes_tx_sc; 270 u64 pn64; 271 272 aes_sc = 273 data->rsc_tsc->params.all_tsc_rsc.aes.unicast_rsc; 274 aes_tx_sc = 275 &data->rsc_tsc->params.all_tsc_rsc.aes.tsc; 276 277 pn64 = atomic64_read(&key->tx_pn); 278 aes_tx_sc->pn = cpu_to_le64(pn64); 279 } else { 280 aes_sc = 281 data->rsc_tsc->params.all_tsc_rsc.aes.multicast_rsc; 282 } 283 284 /* 285 * For non-QoS this relies on the fact that both the uCode and 286 * mac80211/our RX code use TID 0 for checking the PN. 287 */ 288 if (sta && iwl_mvm_has_new_rx_api(mvm)) { 289 struct iwl_mvm_sta *mvmsta; 290 struct iwl_mvm_key_pn *ptk_pn; 291 const u8 *pn; 292 293 mvmsta = iwl_mvm_sta_from_mac80211(sta); 294 rcu_read_lock(); 295 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]); 296 if (WARN_ON(!ptk_pn)) { 297 rcu_read_unlock(); 298 break; 299 } 300 301 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 302 pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i, 303 mvm->trans->num_rx_queues); 304 aes_sc[i].pn = cpu_to_le64((u64)pn[5] | 305 ((u64)pn[4] << 8) | 306 ((u64)pn[3] << 16) | 307 ((u64)pn[2] << 24) | 308 ((u64)pn[1] << 32) | 309 ((u64)pn[0] << 40)); 310 } 311 312 rcu_read_unlock(); 313 } else { 314 for (i = 0; i < IWL_NUM_RSC; i++) { 315 u8 *pn = seq.ccmp.pn; 316 317 ieee80211_get_key_rx_seq(key, i, &seq); 318 aes_sc[i].pn = cpu_to_le64((u64)pn[5] | 319 ((u64)pn[4] << 8) | 320 ((u64)pn[3] << 16) | 321 ((u64)pn[2] << 24) | 322 ((u64)pn[1] << 32) | 323 ((u64)pn[0] << 40)); 324 } 325 } 326 data->have_rsc_tsc = true; 327 break; 328 } 329 } 330 331 struct wowlan_key_rsc_v5_data { 332 struct iwl_wowlan_rsc_tsc_params_cmd *rsc; 333 bool have_rsc; 334 int gtks; 335 int gtk_ids[4]; 336 }; 337 338 static void iwl_mvm_wowlan_get_rsc_v5_data(struct ieee80211_hw *hw, 339 struct ieee80211_vif *vif, 340 struct ieee80211_sta *sta, 341 struct ieee80211_key_conf *key, 342 void *_data) 343 { 344 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 345 struct wowlan_key_rsc_v5_data *data = _data; 346 struct ieee80211_key_seq seq; 347 __le64 *rsc; 348 int i; 349 350 /* only for ciphers that can be PTK/GTK */ 351 switch (key->cipher) { 352 default: 353 return; 354 case WLAN_CIPHER_SUITE_TKIP: 355 case WLAN_CIPHER_SUITE_CCMP: 356 case WLAN_CIPHER_SUITE_GCMP: 357 case WLAN_CIPHER_SUITE_GCMP_256: 358 break; 359 } 360 361 if (sta) { 362 rsc = data->rsc->ucast_rsc; 363 } else { 364 if (WARN_ON(data->gtks >= ARRAY_SIZE(data->gtk_ids))) 365 return; 366 data->gtk_ids[data->gtks] = key->keyidx; 367 rsc = data->rsc->mcast_rsc[data->gtks % 2]; 368 if (WARN_ON(key->keyidx >= 369 ARRAY_SIZE(data->rsc->mcast_key_id_map))) 370 return; 371 data->rsc->mcast_key_id_map[key->keyidx] = data->gtks % 2; 372 if (data->gtks >= 2) { 373 int prev = data->gtks - 2; 374 int prev_idx = data->gtk_ids[prev]; 375 376 data->rsc->mcast_key_id_map[prev_idx] = 377 IWL_MCAST_KEY_MAP_INVALID; 378 } 379 data->gtks++; 380 } 381 382 switch (key->cipher) { 383 default: 384 WARN_ON(1); 385 break; 386 case WLAN_CIPHER_SUITE_TKIP: 387 388 /* 389 * For non-QoS this relies on the fact that both the uCode and 390 * mac80211 use TID 0 (as they need to to avoid replay attacks) 391 * for checking the IV in the frames. 392 */ 393 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 394 ieee80211_get_key_rx_seq(key, i, &seq); 395 396 rsc[i] = cpu_to_le64(((u64)seq.tkip.iv32 << 16) | 397 seq.tkip.iv16); 398 } 399 400 data->have_rsc = true; 401 break; 402 case WLAN_CIPHER_SUITE_CCMP: 403 case WLAN_CIPHER_SUITE_GCMP: 404 case WLAN_CIPHER_SUITE_GCMP_256: 405 /* 406 * For non-QoS this relies on the fact that both the uCode and 407 * mac80211/our RX code use TID 0 for checking the PN. 408 */ 409 if (sta) { 410 struct iwl_mvm_sta *mvmsta; 411 struct iwl_mvm_key_pn *ptk_pn; 412 const u8 *pn; 413 414 mvmsta = iwl_mvm_sta_from_mac80211(sta); 415 rcu_read_lock(); 416 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]); 417 if (WARN_ON(!ptk_pn)) { 418 rcu_read_unlock(); 419 break; 420 } 421 422 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 423 pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i, 424 mvm->trans->num_rx_queues); 425 rsc[i] = cpu_to_le64((u64)pn[5] | 426 ((u64)pn[4] << 8) | 427 ((u64)pn[3] << 16) | 428 ((u64)pn[2] << 24) | 429 ((u64)pn[1] << 32) | 430 ((u64)pn[0] << 40)); 431 } 432 433 rcu_read_unlock(); 434 } else { 435 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 436 u8 *pn = seq.ccmp.pn; 437 438 ieee80211_get_key_rx_seq(key, i, &seq); 439 rsc[i] = cpu_to_le64((u64)pn[5] | 440 ((u64)pn[4] << 8) | 441 ((u64)pn[3] << 16) | 442 ((u64)pn[2] << 24) | 443 ((u64)pn[1] << 32) | 444 ((u64)pn[0] << 40)); 445 } 446 } 447 data->have_rsc = true; 448 break; 449 } 450 } 451 452 static int iwl_mvm_wowlan_config_rsc_tsc(struct iwl_mvm *mvm, 453 struct ieee80211_vif *vif, 454 struct iwl_mvm_vif_link_info *mvm_link) 455 { 456 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TSC_RSC_PARAM, 457 IWL_FW_CMD_VER_UNKNOWN); 458 int ret; 459 460 if (ver == 5) { 461 struct wowlan_key_rsc_v5_data data = {}; 462 int i; 463 464 data.rsc = kzalloc(sizeof(*data.rsc), GFP_KERNEL); 465 if (!data.rsc) 466 return -ENOMEM; 467 468 for (i = 0; i < ARRAY_SIZE(data.rsc->mcast_key_id_map); i++) 469 data.rsc->mcast_key_id_map[i] = 470 IWL_MCAST_KEY_MAP_INVALID; 471 data.rsc->sta_id = cpu_to_le32(mvm_link->ap_sta_id); 472 473 ieee80211_iter_keys(mvm->hw, vif, 474 iwl_mvm_wowlan_get_rsc_v5_data, 475 &data); 476 477 if (data.have_rsc) 478 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM, 479 CMD_ASYNC, sizeof(*data.rsc), 480 data.rsc); 481 else 482 ret = 0; 483 kfree(data.rsc); 484 } else if (ver == 4 || ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN) { 485 struct wowlan_key_rsc_tsc_data data = {}; 486 int size; 487 488 data.rsc_tsc = kzalloc(sizeof(*data.rsc_tsc), GFP_KERNEL); 489 if (!data.rsc_tsc) 490 return -ENOMEM; 491 492 if (ver == 4) { 493 size = sizeof(*data.rsc_tsc); 494 data.rsc_tsc->sta_id = 495 cpu_to_le32(mvm_link->ap_sta_id); 496 } else { 497 /* ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN */ 498 size = sizeof(data.rsc_tsc->params); 499 } 500 501 ieee80211_iter_keys(mvm->hw, vif, 502 iwl_mvm_wowlan_get_rsc_tsc_data, 503 &data); 504 505 if (data.have_rsc_tsc) 506 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM, 507 CMD_ASYNC, size, 508 data.rsc_tsc); 509 else 510 ret = 0; 511 kfree(data.rsc_tsc); 512 } else { 513 ret = 0; 514 WARN_ON_ONCE(1); 515 } 516 517 return ret; 518 } 519 520 struct wowlan_key_tkip_data { 521 struct iwl_wowlan_tkip_params_cmd tkip; 522 bool have_tkip_keys; 523 }; 524 525 static void iwl_mvm_wowlan_get_tkip_data(struct ieee80211_hw *hw, 526 struct ieee80211_vif *vif, 527 struct ieee80211_sta *sta, 528 struct ieee80211_key_conf *key, 529 void *_data) 530 { 531 struct wowlan_key_tkip_data *data = _data; 532 struct iwl_p1k_cache *rx_p1ks; 533 u8 *rx_mic_key; 534 struct ieee80211_key_seq seq; 535 u32 cur_rx_iv32 = 0; 536 u16 p1k[IWL_P1K_SIZE]; 537 int i; 538 539 switch (key->cipher) { 540 default: 541 break; 542 case WLAN_CIPHER_SUITE_TKIP: 543 if (sta) { 544 u64 pn64; 545 546 rx_p1ks = data->tkip.rx_uni; 547 548 pn64 = atomic64_read(&key->tx_pn); 549 550 ieee80211_get_tkip_p1k_iv(key, TKIP_PN_TO_IV32(pn64), 551 p1k); 552 iwl_mvm_convert_p1k(p1k, data->tkip.tx.p1k); 553 554 memcpy(data->tkip.mic_keys.tx, 555 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], 556 IWL_MIC_KEY_SIZE); 557 558 rx_mic_key = data->tkip.mic_keys.rx_unicast; 559 } else { 560 rx_p1ks = data->tkip.rx_multi; 561 rx_mic_key = data->tkip.mic_keys.rx_mcast; 562 } 563 564 for (i = 0; i < IWL_NUM_RSC; i++) { 565 ieee80211_get_key_rx_seq(key, i, &seq); 566 /* wrapping isn't allowed, AP must rekey */ 567 if (seq.tkip.iv32 > cur_rx_iv32) 568 cur_rx_iv32 = seq.tkip.iv32; 569 } 570 571 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid, 572 cur_rx_iv32, p1k); 573 iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k); 574 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid, 575 cur_rx_iv32 + 1, p1k); 576 iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k); 577 578 memcpy(rx_mic_key, 579 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], 580 IWL_MIC_KEY_SIZE); 581 582 data->have_tkip_keys = true; 583 break; 584 } 585 } 586 587 struct wowlan_key_gtk_type_iter { 588 struct iwl_wowlan_kek_kck_material_cmd_v4 *kek_kck_cmd; 589 }; 590 591 static void iwl_mvm_wowlan_gtk_type_iter(struct ieee80211_hw *hw, 592 struct ieee80211_vif *vif, 593 struct ieee80211_sta *sta, 594 struct ieee80211_key_conf *key, 595 void *_data) 596 { 597 struct wowlan_key_gtk_type_iter *data = _data; 598 599 switch (key->cipher) { 600 default: 601 return; 602 case WLAN_CIPHER_SUITE_TKIP: 603 if (!sta) 604 data->kek_kck_cmd->gtk_cipher = 605 cpu_to_le32(STA_KEY_FLG_TKIP); 606 return; 607 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 608 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 609 data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_GCMP); 610 return; 611 case WLAN_CIPHER_SUITE_AES_CMAC: 612 data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_CCM); 613 return; 614 case WLAN_CIPHER_SUITE_CCMP: 615 if (!sta) 616 data->kek_kck_cmd->gtk_cipher = 617 cpu_to_le32(STA_KEY_FLG_CCM); 618 return; 619 case WLAN_CIPHER_SUITE_GCMP: 620 case WLAN_CIPHER_SUITE_GCMP_256: 621 if (!sta) 622 data->kek_kck_cmd->gtk_cipher = 623 cpu_to_le32(STA_KEY_FLG_GCMP); 624 return; 625 } 626 } 627 628 static int iwl_mvm_send_patterns_v1(struct iwl_mvm *mvm, 629 struct cfg80211_wowlan *wowlan) 630 { 631 struct iwl_wowlan_patterns_cmd_v1 *pattern_cmd; 632 struct iwl_host_cmd cmd = { 633 .id = WOWLAN_PATTERNS, 634 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 635 }; 636 int i, err; 637 638 if (!wowlan->n_patterns) 639 return 0; 640 641 cmd.len[0] = struct_size(pattern_cmd, patterns, wowlan->n_patterns); 642 643 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL); 644 if (!pattern_cmd) 645 return -ENOMEM; 646 647 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns); 648 649 for (i = 0; i < wowlan->n_patterns; i++) { 650 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8); 651 652 memcpy(&pattern_cmd->patterns[i].mask, 653 wowlan->patterns[i].mask, mask_len); 654 memcpy(&pattern_cmd->patterns[i].pattern, 655 wowlan->patterns[i].pattern, 656 wowlan->patterns[i].pattern_len); 657 pattern_cmd->patterns[i].mask_size = mask_len; 658 pattern_cmd->patterns[i].pattern_size = 659 wowlan->patterns[i].pattern_len; 660 } 661 662 cmd.data[0] = pattern_cmd; 663 err = iwl_mvm_send_cmd(mvm, &cmd); 664 kfree(pattern_cmd); 665 return err; 666 } 667 668 static int iwl_mvm_send_patterns(struct iwl_mvm *mvm, 669 struct iwl_mvm_vif_link_info *mvm_link, 670 struct cfg80211_wowlan *wowlan) 671 { 672 struct iwl_wowlan_patterns_cmd *pattern_cmd; 673 struct iwl_host_cmd cmd = { 674 .id = WOWLAN_PATTERNS, 675 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 676 }; 677 int i, err; 678 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id, 679 IWL_FW_CMD_VER_UNKNOWN); 680 681 if (!wowlan->n_patterns) 682 return 0; 683 684 cmd.len[0] = sizeof(*pattern_cmd) + 685 wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern_v2); 686 687 pattern_cmd = kzalloc(cmd.len[0], GFP_KERNEL); 688 if (!pattern_cmd) 689 return -ENOMEM; 690 691 pattern_cmd->n_patterns = wowlan->n_patterns; 692 if (ver >= 3) 693 pattern_cmd->sta_id = mvm_link->ap_sta_id; 694 695 for (i = 0; i < wowlan->n_patterns; i++) { 696 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8); 697 698 pattern_cmd->patterns[i].pattern_type = 699 WOWLAN_PATTERN_TYPE_BITMASK; 700 701 memcpy(&pattern_cmd->patterns[i].u.bitmask.mask, 702 wowlan->patterns[i].mask, mask_len); 703 memcpy(&pattern_cmd->patterns[i].u.bitmask.pattern, 704 wowlan->patterns[i].pattern, 705 wowlan->patterns[i].pattern_len); 706 pattern_cmd->patterns[i].u.bitmask.mask_size = mask_len; 707 pattern_cmd->patterns[i].u.bitmask.pattern_size = 708 wowlan->patterns[i].pattern_len; 709 } 710 711 cmd.data[0] = pattern_cmd; 712 err = iwl_mvm_send_cmd(mvm, &cmd); 713 kfree(pattern_cmd); 714 return err; 715 } 716 717 static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 718 struct ieee80211_sta *ap_sta) 719 { 720 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 721 struct ieee80211_chanctx_conf *ctx; 722 u8 chains_static, chains_dynamic; 723 struct cfg80211_chan_def chandef, ap_def; 724 int ret, i; 725 struct iwl_binding_cmd_v1 binding_cmd = {}; 726 struct iwl_time_quota_cmd quota_cmd = {}; 727 struct iwl_time_quota_data *quota; 728 u32 status; 729 730 if (WARN_ON_ONCE(iwl_mvm_is_cdb_supported(mvm) || 731 ieee80211_vif_is_mld(vif))) 732 return -EINVAL; 733 734 /* add back the PHY */ 735 if (WARN_ON(!mvmvif->deflink.phy_ctxt)) 736 return -EINVAL; 737 738 rcu_read_lock(); 739 ctx = rcu_dereference(vif->bss_conf.chanctx_conf); 740 if (WARN_ON(!ctx)) { 741 rcu_read_unlock(); 742 return -EINVAL; 743 } 744 chandef = ctx->def; 745 ap_def = ctx->ap; 746 chains_static = ctx->rx_chains_static; 747 chains_dynamic = ctx->rx_chains_dynamic; 748 rcu_read_unlock(); 749 750 ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->deflink.phy_ctxt, &chandef, 751 &ap_def, chains_static, chains_dynamic); 752 if (ret) 753 return ret; 754 755 /* add back the MAC */ 756 mvmvif->uploaded = false; 757 758 if (WARN_ON(!vif->cfg.assoc)) 759 return -EINVAL; 760 761 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 762 if (ret) 763 return ret; 764 765 /* add back binding - XXX refactor? */ 766 binding_cmd.id_and_color = 767 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id, 768 mvmvif->deflink.phy_ctxt->color)); 769 binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD); 770 binding_cmd.phy = 771 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id, 772 mvmvif->deflink.phy_ctxt->color)); 773 binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 774 mvmvif->color)); 775 for (i = 1; i < MAX_MACS_IN_BINDING; i++) 776 binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID); 777 778 status = 0; 779 ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD, 780 IWL_BINDING_CMD_SIZE_V1, &binding_cmd, 781 &status); 782 if (ret) { 783 IWL_ERR(mvm, "Failed to add binding: %d\n", ret); 784 return ret; 785 } 786 787 if (status) { 788 IWL_ERR(mvm, "Binding command failed: %u\n", status); 789 return -EIO; 790 } 791 792 ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false, 0); 793 if (ret) 794 return ret; 795 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->deflink.ap_sta_id], 796 ap_sta); 797 798 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 799 if (ret) 800 return ret; 801 802 /* and some quota */ 803 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, 0); 804 quota->id_and_color = 805 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id, 806 mvmvif->deflink.phy_ctxt->color)); 807 quota->quota = cpu_to_le32(IWL_MVM_MAX_QUOTA); 808 quota->max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA); 809 810 for (i = 1; i < MAX_BINDINGS; i++) { 811 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, i); 812 quota->id_and_color = cpu_to_le32(FW_CTXT_INVALID); 813 } 814 815 ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0, 816 iwl_mvm_quota_cmd_size(mvm), "a_cmd); 817 if (ret) 818 IWL_ERR(mvm, "Failed to send quota: %d\n", ret); 819 820 if (iwl_mvm_is_lar_supported(mvm) && iwl_mvm_init_fw_regd(mvm, false)) 821 IWL_ERR(mvm, "Failed to initialize D3 LAR information\n"); 822 823 return 0; 824 } 825 826 static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm, 827 struct ieee80211_vif *vif) 828 { 829 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 830 struct iwl_nonqos_seq_query_cmd query_cmd = { 831 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET), 832 .mac_id_n_color = 833 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 834 mvmvif->color)), 835 }; 836 struct iwl_host_cmd cmd = { 837 .id = NON_QOS_TX_COUNTER_CMD, 838 .flags = CMD_WANT_SKB, 839 }; 840 int err; 841 u32 size; 842 843 cmd.data[0] = &query_cmd; 844 cmd.len[0] = sizeof(query_cmd); 845 846 err = iwl_mvm_send_cmd(mvm, &cmd); 847 if (err) 848 return err; 849 850 size = iwl_rx_packet_payload_len(cmd.resp_pkt); 851 if (size < sizeof(__le16)) { 852 err = -EINVAL; 853 } else { 854 err = le16_to_cpup((__le16 *)cmd.resp_pkt->data); 855 /* firmware returns next, not last-used seqno */ 856 err = (u16) (err - 0x10); 857 } 858 859 iwl_free_resp(&cmd); 860 return err; 861 } 862 863 void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 864 { 865 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 866 struct iwl_nonqos_seq_query_cmd query_cmd = { 867 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET), 868 .mac_id_n_color = 869 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 870 mvmvif->color)), 871 .value = cpu_to_le16(mvmvif->seqno), 872 }; 873 874 /* return if called during restart, not resume from D3 */ 875 if (!mvmvif->seqno_valid) 876 return; 877 878 mvmvif->seqno_valid = false; 879 880 if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0, 881 sizeof(query_cmd), &query_cmd)) 882 IWL_ERR(mvm, "failed to set non-QoS seqno\n"); 883 } 884 885 static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm) 886 { 887 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 888 889 iwl_mvm_stop_device(mvm); 890 /* 891 * Set the HW restart bit -- this is mostly true as we're 892 * going to load new firmware and reprogram that, though 893 * the reprogramming is going to be manual to avoid adding 894 * all the MACs that aren't support. 895 * We don't have to clear up everything though because the 896 * reprogramming is manual. When we resume, we'll actually 897 * go through a proper restart sequence again to switch 898 * back to the runtime firmware image. 899 */ 900 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 901 902 /* the fw is reset, so all the keys are cleared */ 903 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); 904 905 mvm->ptk_ivlen = 0; 906 mvm->ptk_icvlen = 0; 907 mvm->ptk_ivlen = 0; 908 mvm->ptk_icvlen = 0; 909 910 return iwl_mvm_load_d3_fw(mvm); 911 } 912 913 static int 914 iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm, 915 struct cfg80211_wowlan *wowlan, 916 struct iwl_wowlan_config_cmd *wowlan_config_cmd, 917 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif, 918 struct ieee80211_sta *ap_sta) 919 { 920 struct iwl_mvm_sta *mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta); 921 922 /* TODO: wowlan_config_cmd->wowlan_ba_teardown_tids */ 923 924 wowlan_config_cmd->is_11n_connection = 925 ap_sta->deflink.ht_cap.ht_supported; 926 wowlan_config_cmd->flags = ENABLE_L3_FILTERING | 927 ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING; 928 929 if (ap_sta->mfp) 930 wowlan_config_cmd->flags |= IS_11W_ASSOC; 931 932 if (iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_CONFIGURATION, 0) < 6) { 933 /* Query the last used seqno and set it */ 934 int ret = iwl_mvm_get_last_nonqos_seq(mvm, vif); 935 936 if (ret < 0) 937 return ret; 938 939 wowlan_config_cmd->non_qos_seq = cpu_to_le16(ret); 940 } 941 942 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, wowlan_config_cmd); 943 944 if (wowlan->disconnect) 945 wowlan_config_cmd->wakeup_filter |= 946 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS | 947 IWL_WOWLAN_WAKEUP_LINK_CHANGE); 948 if (wowlan->magic_pkt) 949 wowlan_config_cmd->wakeup_filter |= 950 cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET); 951 if (wowlan->gtk_rekey_failure) 952 wowlan_config_cmd->wakeup_filter |= 953 cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL); 954 if (wowlan->eap_identity_req) 955 wowlan_config_cmd->wakeup_filter |= 956 cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ); 957 if (wowlan->four_way_handshake) 958 wowlan_config_cmd->wakeup_filter |= 959 cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE); 960 if (wowlan->n_patterns) 961 wowlan_config_cmd->wakeup_filter |= 962 cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH); 963 964 if (wowlan->rfkill_release) 965 wowlan_config_cmd->wakeup_filter |= 966 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT); 967 968 if (wowlan->tcp) { 969 /* 970 * Set the "link change" (really "link lost") flag as well 971 * since that implies losing the TCP connection. 972 */ 973 wowlan_config_cmd->wakeup_filter |= 974 cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS | 975 IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE | 976 IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET | 977 IWL_WOWLAN_WAKEUP_LINK_CHANGE); 978 } 979 980 if (wowlan->any) { 981 wowlan_config_cmd->wakeup_filter |= 982 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS | 983 IWL_WOWLAN_WAKEUP_LINK_CHANGE | 984 IWL_WOWLAN_WAKEUP_RX_FRAME | 985 IWL_WOWLAN_WAKEUP_BCN_FILTERING); 986 } 987 988 return 0; 989 } 990 991 static int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm, 992 struct ieee80211_vif *vif, 993 struct iwl_mvm_vif_link_info *mvm_link) 994 { 995 bool unified = fw_has_capa(&mvm->fw->ucode_capa, 996 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 997 struct wowlan_key_reprogram_data key_data = {}; 998 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 999 int ret; 1000 u8 cmd_ver; 1001 size_t cmd_size; 1002 1003 if (!unified) { 1004 /* 1005 * if we have to configure keys, call ieee80211_iter_keys(), 1006 * as we need non-atomic context in order to take the 1007 * required locks. 1008 */ 1009 /* 1010 * Note that currently we don't use CMD_ASYNC in the iterator. 1011 * In case of key_data.configure_keys, all the configured 1012 * commands are SYNC, and iwl_mvm_wowlan_program_keys() will 1013 * take care of locking/unlocking mvm->mutex. 1014 */ 1015 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_program_keys, 1016 &key_data); 1017 1018 if (key_data.error) 1019 return -EIO; 1020 } 1021 1022 ret = iwl_mvm_wowlan_config_rsc_tsc(mvm, vif, mvm_link); 1023 if (ret) 1024 return ret; 1025 1026 if (!fw_has_api(&mvm->fw->ucode_capa, 1027 IWL_UCODE_TLV_API_TKIP_MIC_KEYS)) { 1028 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TKIP_PARAM, 1029 IWL_FW_CMD_VER_UNKNOWN); 1030 struct wowlan_key_tkip_data tkip_data = {}; 1031 int size; 1032 1033 if (ver == 2) { 1034 size = sizeof(tkip_data.tkip); 1035 tkip_data.tkip.sta_id = 1036 cpu_to_le32(mvm_link->ap_sta_id); 1037 } else if (ver == 1 || ver == IWL_FW_CMD_VER_UNKNOWN) { 1038 size = sizeof(struct iwl_wowlan_tkip_params_cmd_ver_1); 1039 } else { 1040 WARN_ON_ONCE(1); 1041 return -EINVAL; 1042 } 1043 1044 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_get_tkip_data, 1045 &tkip_data); 1046 1047 if (tkip_data.have_tkip_keys) { 1048 /* send relevant data according to CMD version */ 1049 ret = iwl_mvm_send_cmd_pdu(mvm, 1050 WOWLAN_TKIP_PARAM, 1051 CMD_ASYNC, size, 1052 &tkip_data.tkip); 1053 if (ret) 1054 return ret; 1055 } 1056 } 1057 1058 /* configure rekey data only if offloaded rekey is supported (d3) */ 1059 if (mvmvif->rekey_data.valid) { 1060 struct iwl_wowlan_kek_kck_material_cmd_v4 kek_kck_cmd = {}; 1061 struct iwl_wowlan_kek_kck_material_cmd_v4 *_kek_kck_cmd = 1062 &kek_kck_cmd; 1063 struct wowlan_key_gtk_type_iter gtk_type_data = { 1064 .kek_kck_cmd = _kek_kck_cmd, 1065 }; 1066 1067 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, 1068 WOWLAN_KEK_KCK_MATERIAL, 1069 IWL_FW_CMD_VER_UNKNOWN); 1070 if (WARN_ON(cmd_ver != 2 && cmd_ver != 3 && cmd_ver != 4 && 1071 cmd_ver != IWL_FW_CMD_VER_UNKNOWN)) 1072 return -EINVAL; 1073 1074 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_gtk_type_iter, 1075 >k_type_data); 1076 1077 memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck, 1078 mvmvif->rekey_data.kck_len); 1079 kek_kck_cmd.kck_len = cpu_to_le16(mvmvif->rekey_data.kck_len); 1080 memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek, 1081 mvmvif->rekey_data.kek_len); 1082 kek_kck_cmd.kek_len = cpu_to_le16(mvmvif->rekey_data.kek_len); 1083 kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr; 1084 kek_kck_cmd.akm = cpu_to_le32(mvmvif->rekey_data.akm); 1085 kek_kck_cmd.sta_id = cpu_to_le32(mvm_link->ap_sta_id); 1086 1087 if (cmd_ver == 4) { 1088 cmd_size = sizeof(struct iwl_wowlan_kek_kck_material_cmd_v4); 1089 } else { 1090 if (cmd_ver == 3) 1091 cmd_size = 1092 sizeof(struct iwl_wowlan_kek_kck_material_cmd_v3); 1093 else 1094 cmd_size = 1095 sizeof(struct iwl_wowlan_kek_kck_material_cmd_v2); 1096 /* skip the sta_id at the beginning */ 1097 _kek_kck_cmd = (void *) 1098 ((u8 *)_kek_kck_cmd + sizeof(kek_kck_cmd.sta_id)); 1099 } 1100 1101 IWL_DEBUG_WOWLAN(mvm, "setting akm %d\n", 1102 mvmvif->rekey_data.akm); 1103 1104 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_KEK_KCK_MATERIAL, 1105 CMD_ASYNC, cmd_size, _kek_kck_cmd); 1106 if (ret) 1107 return ret; 1108 } 1109 1110 return 0; 1111 } 1112 1113 static int 1114 iwl_mvm_wowlan_config(struct iwl_mvm *mvm, 1115 struct cfg80211_wowlan *wowlan, 1116 struct iwl_wowlan_config_cmd *wowlan_config_cmd, 1117 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif, 1118 struct iwl_mvm_vif_link_info *mvm_link, 1119 struct ieee80211_sta *ap_sta) 1120 { 1121 int ret; 1122 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 1123 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1124 1125 mvm->offload_tid = wowlan_config_cmd->offloading_tid; 1126 1127 if (!unified_image) { 1128 ret = iwl_mvm_switch_to_d3(mvm); 1129 if (ret) 1130 return ret; 1131 1132 ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta); 1133 if (ret) 1134 return ret; 1135 } 1136 1137 ret = iwl_mvm_wowlan_config_key_params(mvm, vif, mvm_link); 1138 if (ret) 1139 return ret; 1140 1141 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0, 1142 sizeof(*wowlan_config_cmd), 1143 wowlan_config_cmd); 1144 if (ret) 1145 return ret; 1146 1147 if (fw_has_api(&mvm->fw->ucode_capa, 1148 IWL_UCODE_TLV_API_WOWLAN_TCP_SYN_WAKE)) 1149 ret = iwl_mvm_send_patterns(mvm, mvm_link, wowlan); 1150 else 1151 ret = iwl_mvm_send_patterns_v1(mvm, wowlan); 1152 if (ret) 1153 return ret; 1154 1155 return iwl_mvm_send_proto_offload(mvm, vif, false, true, 0); 1156 } 1157 1158 static int 1159 iwl_mvm_netdetect_config(struct iwl_mvm *mvm, 1160 struct cfg80211_wowlan *wowlan, 1161 struct cfg80211_sched_scan_request *nd_config, 1162 struct ieee80211_vif *vif) 1163 { 1164 int ret; 1165 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 1166 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1167 1168 if (!unified_image) { 1169 ret = iwl_mvm_switch_to_d3(mvm); 1170 if (ret) 1171 return ret; 1172 } else { 1173 /* In theory, we wouldn't have to stop a running sched 1174 * scan in order to start another one (for 1175 * net-detect). But in practice this doesn't seem to 1176 * work properly, so stop any running sched_scan now. 1177 */ 1178 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 1179 if (ret) 1180 return ret; 1181 } 1182 1183 ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies, 1184 IWL_MVM_SCAN_NETDETECT); 1185 if (ret) 1186 return ret; 1187 1188 if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels)) 1189 return -EBUSY; 1190 1191 /* save the sched scan matchsets... */ 1192 if (nd_config->n_match_sets) { 1193 mvm->nd_match_sets = kmemdup(nd_config->match_sets, 1194 sizeof(*nd_config->match_sets) * 1195 nd_config->n_match_sets, 1196 GFP_KERNEL); 1197 if (mvm->nd_match_sets) 1198 mvm->n_nd_match_sets = nd_config->n_match_sets; 1199 } 1200 1201 /* ...and the sched scan channels for later reporting */ 1202 mvm->nd_channels = kmemdup(nd_config->channels, 1203 sizeof(*nd_config->channels) * 1204 nd_config->n_channels, 1205 GFP_KERNEL); 1206 if (mvm->nd_channels) 1207 mvm->n_nd_channels = nd_config->n_channels; 1208 1209 return 0; 1210 } 1211 1212 static void iwl_mvm_free_nd(struct iwl_mvm *mvm) 1213 { 1214 kfree(mvm->nd_match_sets); 1215 mvm->nd_match_sets = NULL; 1216 mvm->n_nd_match_sets = 0; 1217 kfree(mvm->nd_channels); 1218 mvm->nd_channels = NULL; 1219 mvm->n_nd_channels = 0; 1220 } 1221 1222 static int __iwl_mvm_suspend(struct ieee80211_hw *hw, 1223 struct cfg80211_wowlan *wowlan, 1224 bool test) 1225 { 1226 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1227 struct ieee80211_vif *vif = NULL; 1228 struct iwl_mvm_vif *mvmvif = NULL; 1229 struct ieee80211_sta *ap_sta = NULL; 1230 struct iwl_mvm_vif_link_info *mvm_link; 1231 struct iwl_d3_manager_config d3_cfg_cmd_data = { 1232 /* 1233 * Program the minimum sleep time to 10 seconds, as many 1234 * platforms have issues processing a wakeup signal while 1235 * still being in the process of suspending. 1236 */ 1237 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000), 1238 }; 1239 struct iwl_host_cmd d3_cfg_cmd = { 1240 .id = D3_CONFIG_CMD, 1241 .flags = CMD_WANT_SKB | CMD_SEND_IN_D3, 1242 .data[0] = &d3_cfg_cmd_data, 1243 .len[0] = sizeof(d3_cfg_cmd_data), 1244 }; 1245 int ret, primary_link; 1246 int len __maybe_unused; 1247 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 1248 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1249 1250 if (!wowlan) { 1251 /* 1252 * mac80211 shouldn't get here, but for D3 test 1253 * it doesn't warrant a warning 1254 */ 1255 WARN_ON(!test); 1256 return -EINVAL; 1257 } 1258 1259 vif = iwl_mvm_get_bss_vif(mvm); 1260 if (IS_ERR_OR_NULL(vif)) 1261 return 1; 1262 1263 if (ieee80211_vif_is_mld(vif) && vif->cfg.assoc) { 1264 /* 1265 * Select the 'best' link. May need to revisit, it seems 1266 * better to not optimize for throughput but rather range, 1267 * reliability and power here - and select 2.4 GHz ... 1268 */ 1269 primary_link = 1270 iwl_mvm_mld_get_primary_link(mvm, vif, 1271 vif->active_links); 1272 1273 if (WARN_ONCE(primary_link < 0, "no primary link in 0x%x\n", 1274 vif->active_links)) 1275 primary_link = __ffs(vif->active_links); 1276 1277 ret = ieee80211_set_active_links(vif, BIT(primary_link)); 1278 if (ret) 1279 return ret; 1280 } else { 1281 primary_link = 0; 1282 } 1283 1284 mutex_lock(&mvm->mutex); 1285 1286 set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 1287 1288 synchronize_net(); 1289 1290 mvmvif = iwl_mvm_vif_from_mac80211(vif); 1291 1292 mvm_link = mvmvif->link[primary_link]; 1293 if (WARN_ON_ONCE(!mvm_link)) { 1294 ret = -EINVAL; 1295 goto out_noreset; 1296 } 1297 1298 if (mvm_link->ap_sta_id == IWL_MVM_INVALID_STA) { 1299 /* if we're not associated, this must be netdetect */ 1300 if (!wowlan->nd_config) { 1301 ret = 1; 1302 goto out_noreset; 1303 } 1304 1305 ret = iwl_mvm_netdetect_config( 1306 mvm, wowlan, wowlan->nd_config, vif); 1307 if (ret) 1308 goto out; 1309 1310 mvm->net_detect = true; 1311 } else { 1312 struct iwl_wowlan_config_cmd wowlan_config_cmd = { 1313 .offloading_tid = 0, 1314 }; 1315 1316 wowlan_config_cmd.sta_id = mvm_link->ap_sta_id; 1317 1318 ap_sta = rcu_dereference_protected( 1319 mvm->fw_id_to_mac_id[mvm_link->ap_sta_id], 1320 lockdep_is_held(&mvm->mutex)); 1321 if (IS_ERR_OR_NULL(ap_sta)) { 1322 ret = -EINVAL; 1323 goto out_noreset; 1324 } 1325 1326 ret = iwl_mvm_sta_ensure_queue( 1327 mvm, ap_sta->txq[wowlan_config_cmd.offloading_tid]); 1328 if (ret) 1329 goto out_noreset; 1330 1331 ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd, 1332 vif, mvmvif, ap_sta); 1333 if (ret) 1334 goto out_noreset; 1335 ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd, 1336 vif, mvmvif, mvm_link, ap_sta); 1337 if (ret) 1338 goto out; 1339 1340 mvm->net_detect = false; 1341 } 1342 1343 ret = iwl_mvm_power_update_device(mvm); 1344 if (ret) 1345 goto out; 1346 1347 ret = iwl_mvm_power_update_mac(mvm); 1348 if (ret) 1349 goto out; 1350 1351 #ifdef CONFIG_IWLWIFI_DEBUGFS 1352 if (mvm->d3_wake_sysassert) 1353 d3_cfg_cmd_data.wakeup_flags |= 1354 cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR); 1355 #endif 1356 1357 /* 1358 * Prior to 9000 device family the driver needs to stop the dbg 1359 * recording before entering D3. In later devices the FW stops the 1360 * recording automatically. 1361 */ 1362 if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_9000) 1363 iwl_fw_dbg_stop_restart_recording(&mvm->fwrt, NULL, true); 1364 1365 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_D3; 1366 1367 /* must be last -- this switches firmware state */ 1368 ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd); 1369 if (ret) 1370 goto out; 1371 #ifdef CONFIG_IWLWIFI_DEBUGFS 1372 len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt); 1373 if (len >= sizeof(u32)) { 1374 mvm->d3_test_pme_ptr = 1375 le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data); 1376 } 1377 #endif 1378 iwl_free_resp(&d3_cfg_cmd); 1379 1380 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1381 1382 ret = iwl_trans_d3_suspend(mvm->trans, test, !unified_image); 1383 out: 1384 if (ret < 0) { 1385 iwl_mvm_free_nd(mvm); 1386 1387 if (!unified_image) { 1388 if (mvm->fw_restart > 0) { 1389 mvm->fw_restart--; 1390 ieee80211_restart_hw(mvm->hw); 1391 } 1392 } 1393 1394 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 1395 } 1396 out_noreset: 1397 mutex_unlock(&mvm->mutex); 1398 1399 return ret; 1400 } 1401 1402 int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) 1403 { 1404 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1405 1406 iwl_mvm_pause_tcm(mvm, true); 1407 1408 iwl_fw_runtime_suspend(&mvm->fwrt); 1409 1410 return __iwl_mvm_suspend(hw, wowlan, false); 1411 } 1412 1413 struct iwl_multicast_key_data { 1414 u8 key[WOWLAN_KEY_MAX_SIZE]; 1415 u8 len; 1416 u8 flags; 1417 u8 id; 1418 u8 ipn[6]; 1419 }; 1420 1421 /* converted data from the different status responses */ 1422 struct iwl_wowlan_status_data { 1423 u64 replay_ctr; 1424 u32 num_of_gtk_rekeys; 1425 u32 received_beacons; 1426 u32 wakeup_reasons; 1427 u32 wake_packet_length; 1428 u32 wake_packet_bufsize; 1429 u16 pattern_number; 1430 u16 non_qos_seq_ctr; 1431 u16 qos_seq_ctr[8]; 1432 u8 tid_tear_down; 1433 1434 struct { 1435 /* including RX MIC key for TKIP */ 1436 u8 key[WOWLAN_KEY_MAX_SIZE]; 1437 u8 len; 1438 u8 flags; 1439 u8 id; 1440 } gtk[WOWLAN_GTK_KEYS_NUM]; 1441 1442 struct { 1443 /* 1444 * We store both the TKIP and AES representations 1445 * coming from the firmware because we decode the 1446 * data from there before we iterate the keys and 1447 * know which one we need. 1448 */ 1449 struct { 1450 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT]; 1451 } tkip, aes; 1452 1453 /* 1454 * We use -1 for when we have valid data but don't know 1455 * the key ID from firmware, and thus it needs to be 1456 * installed with the last key (depending on rekeying). 1457 */ 1458 s8 key_id; 1459 bool valid; 1460 } gtk_seq[2]; 1461 1462 struct { 1463 /* Same as above */ 1464 struct { 1465 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT]; 1466 u64 tx_pn; 1467 } tkip, aes; 1468 } ptk; 1469 1470 struct iwl_multicast_key_data igtk; 1471 struct iwl_multicast_key_data bigtk[WOWLAN_BIGTK_KEYS_NUM]; 1472 1473 u8 *wake_packet; 1474 }; 1475 1476 static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm, 1477 struct ieee80211_vif *vif, 1478 struct iwl_wowlan_status_data *status) 1479 { 1480 struct sk_buff *pkt = NULL; 1481 struct cfg80211_wowlan_wakeup wakeup = { 1482 .pattern_idx = -1, 1483 }; 1484 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; 1485 u32 reasons = status->wakeup_reasons; 1486 1487 if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) { 1488 wakeup_report = NULL; 1489 goto report; 1490 } 1491 1492 pm_wakeup_event(mvm->dev, 0); 1493 1494 if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET) 1495 wakeup.magic_pkt = true; 1496 1497 if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN) 1498 wakeup.pattern_idx = 1499 status->pattern_number; 1500 1501 if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 1502 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH | 1503 IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)) 1504 wakeup.disconnect = true; 1505 1506 if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE) 1507 wakeup.gtk_rekey_failure = true; 1508 1509 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 1510 wakeup.rfkill_release = true; 1511 1512 if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST) 1513 wakeup.eap_identity_req = true; 1514 1515 if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE) 1516 wakeup.four_way_handshake = true; 1517 1518 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS) 1519 wakeup.tcp_connlost = true; 1520 1521 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE) 1522 wakeup.tcp_nomoretokens = true; 1523 1524 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET) 1525 wakeup.tcp_match = true; 1526 1527 if (reasons & IWL_WAKEUP_BY_11W_UNPROTECTED_DEAUTH_OR_DISASSOC) 1528 wakeup.unprot_deauth_disassoc = true; 1529 1530 if (status->wake_packet) { 1531 int pktsize = status->wake_packet_bufsize; 1532 int pktlen = status->wake_packet_length; 1533 const u8 *pktdata = status->wake_packet; 1534 const struct ieee80211_hdr *hdr = (const void *)pktdata; 1535 int truncated = pktlen - pktsize; 1536 1537 /* this would be a firmware bug */ 1538 if (WARN_ON_ONCE(truncated < 0)) 1539 truncated = 0; 1540 1541 if (ieee80211_is_data(hdr->frame_control)) { 1542 int hdrlen = ieee80211_hdrlen(hdr->frame_control); 1543 int ivlen = 0, icvlen = 4; /* also FCS */ 1544 1545 pkt = alloc_skb(pktsize, GFP_KERNEL); 1546 if (!pkt) 1547 goto report; 1548 1549 skb_put_data(pkt, pktdata, hdrlen); 1550 pktdata += hdrlen; 1551 pktsize -= hdrlen; 1552 1553 if (ieee80211_has_protected(hdr->frame_control)) { 1554 /* 1555 * This is unlocked and using gtk_i(c)vlen, 1556 * but since everything is under RTNL still 1557 * that's not really a problem - changing 1558 * it would be difficult. 1559 */ 1560 if (is_multicast_ether_addr(hdr->addr1)) { 1561 ivlen = mvm->gtk_ivlen; 1562 icvlen += mvm->gtk_icvlen; 1563 } else { 1564 ivlen = mvm->ptk_ivlen; 1565 icvlen += mvm->ptk_icvlen; 1566 } 1567 } 1568 1569 /* if truncated, FCS/ICV is (partially) gone */ 1570 if (truncated >= icvlen) { 1571 icvlen = 0; 1572 truncated -= icvlen; 1573 } else { 1574 icvlen -= truncated; 1575 truncated = 0; 1576 } 1577 1578 pktsize -= ivlen + icvlen; 1579 pktdata += ivlen; 1580 1581 skb_put_data(pkt, pktdata, pktsize); 1582 1583 if (ieee80211_data_to_8023(pkt, vif->addr, vif->type)) 1584 goto report; 1585 wakeup.packet = pkt->data; 1586 wakeup.packet_present_len = pkt->len; 1587 wakeup.packet_len = pkt->len - truncated; 1588 wakeup.packet_80211 = false; 1589 } else { 1590 int fcslen = 4; 1591 1592 if (truncated >= 4) { 1593 truncated -= 4; 1594 fcslen = 0; 1595 } else { 1596 fcslen -= truncated; 1597 truncated = 0; 1598 } 1599 pktsize -= fcslen; 1600 wakeup.packet = status->wake_packet; 1601 wakeup.packet_present_len = pktsize; 1602 wakeup.packet_len = pktlen - truncated; 1603 wakeup.packet_80211 = true; 1604 } 1605 } 1606 1607 report: 1608 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); 1609 kfree_skb(pkt); 1610 } 1611 1612 static void iwl_mvm_le64_to_aes_seq(__le64 le_pn, struct ieee80211_key_seq *seq) 1613 { 1614 u64 pn = le64_to_cpu(le_pn); 1615 1616 seq->ccmp.pn[0] = pn >> 40; 1617 seq->ccmp.pn[1] = pn >> 32; 1618 seq->ccmp.pn[2] = pn >> 24; 1619 seq->ccmp.pn[3] = pn >> 16; 1620 seq->ccmp.pn[4] = pn >> 8; 1621 seq->ccmp.pn[5] = pn; 1622 } 1623 1624 static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc, 1625 struct ieee80211_key_seq *seq) 1626 { 1627 iwl_mvm_le64_to_aes_seq(sc->pn, seq); 1628 } 1629 1630 static void iwl_mvm_le64_to_tkip_seq(__le64 le_pn, struct ieee80211_key_seq *seq) 1631 { 1632 u64 pn = le64_to_cpu(le_pn); 1633 1634 seq->tkip.iv16 = (u16)pn; 1635 seq->tkip.iv32 = (u32)(pn >> 16); 1636 } 1637 1638 static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc, 1639 struct ieee80211_key_seq *seq) 1640 { 1641 seq->tkip.iv32 = le32_to_cpu(sc->iv32); 1642 seq->tkip.iv16 = le16_to_cpu(sc->iv16); 1643 } 1644 1645 static void iwl_mvm_set_key_rx_seq_tids(struct ieee80211_key_conf *key, 1646 struct ieee80211_key_seq *seq) 1647 { 1648 int tid; 1649 1650 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) 1651 ieee80211_set_key_rx_seq(key, tid, &seq[tid]); 1652 } 1653 1654 static void iwl_mvm_set_aes_ptk_rx_seq(struct iwl_mvm *mvm, 1655 struct iwl_wowlan_status_data *status, 1656 struct ieee80211_sta *sta, 1657 struct ieee80211_key_conf *key) 1658 { 1659 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1660 struct iwl_mvm_key_pn *ptk_pn; 1661 int tid; 1662 1663 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.aes.seq); 1664 1665 if (!iwl_mvm_has_new_rx_api(mvm)) 1666 return; 1667 1668 1669 rcu_read_lock(); 1670 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]); 1671 if (WARN_ON(!ptk_pn)) { 1672 rcu_read_unlock(); 1673 return; 1674 } 1675 1676 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1677 int i; 1678 1679 for (i = 1; i < mvm->trans->num_rx_queues; i++) 1680 memcpy(ptk_pn->q[i].pn[tid], 1681 status->ptk.aes.seq[tid].ccmp.pn, 1682 IEEE80211_CCMP_PN_LEN); 1683 } 1684 rcu_read_unlock(); 1685 } 1686 1687 static void iwl_mvm_convert_key_counters(struct iwl_wowlan_status_data *status, 1688 union iwl_all_tsc_rsc *sc) 1689 { 1690 int i; 1691 1692 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT); 1693 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC); 1694 1695 /* GTK RX counters */ 1696 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1697 iwl_mvm_tkip_sc_to_seq(&sc->tkip.multicast_rsc[i], 1698 &status->gtk_seq[0].tkip.seq[i]); 1699 iwl_mvm_aes_sc_to_seq(&sc->aes.multicast_rsc[i], 1700 &status->gtk_seq[0].aes.seq[i]); 1701 } 1702 status->gtk_seq[0].valid = true; 1703 status->gtk_seq[0].key_id = -1; 1704 1705 /* PTK TX counter */ 1706 status->ptk.tkip.tx_pn = (u64)le16_to_cpu(sc->tkip.tsc.iv16) | 1707 ((u64)le32_to_cpu(sc->tkip.tsc.iv32) << 16); 1708 status->ptk.aes.tx_pn = le64_to_cpu(sc->aes.tsc.pn); 1709 1710 /* PTK RX counters */ 1711 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1712 iwl_mvm_tkip_sc_to_seq(&sc->tkip.unicast_rsc[i], 1713 &status->ptk.tkip.seq[i]); 1714 iwl_mvm_aes_sc_to_seq(&sc->aes.unicast_rsc[i], 1715 &status->ptk.aes.seq[i]); 1716 } 1717 } 1718 1719 static void 1720 iwl_mvm_convert_key_counters_v5_gtk_seq(struct iwl_wowlan_status_data *status, 1721 struct iwl_wowlan_all_rsc_tsc_v5 *sc, 1722 unsigned int idx, unsigned int key_id) 1723 { 1724 int tid; 1725 1726 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1727 iwl_mvm_le64_to_tkip_seq(sc->mcast_rsc[idx][tid], 1728 &status->gtk_seq[idx].tkip.seq[tid]); 1729 iwl_mvm_le64_to_aes_seq(sc->mcast_rsc[idx][tid], 1730 &status->gtk_seq[idx].aes.seq[tid]); 1731 } 1732 1733 status->gtk_seq[idx].valid = true; 1734 status->gtk_seq[idx].key_id = key_id; 1735 } 1736 1737 static void 1738 iwl_mvm_convert_key_counters_v5(struct iwl_wowlan_status_data *status, 1739 struct iwl_wowlan_all_rsc_tsc_v5 *sc) 1740 { 1741 int i, tid; 1742 1743 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT); 1744 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC); 1745 BUILD_BUG_ON(ARRAY_SIZE(sc->mcast_rsc) != ARRAY_SIZE(status->gtk_seq)); 1746 1747 /* GTK RX counters */ 1748 for (i = 0; i < ARRAY_SIZE(sc->mcast_key_id_map); i++) { 1749 u8 entry = sc->mcast_key_id_map[i]; 1750 1751 if (entry < ARRAY_SIZE(sc->mcast_rsc)) 1752 iwl_mvm_convert_key_counters_v5_gtk_seq(status, sc, 1753 entry, i); 1754 } 1755 1756 /* PTK TX counters not needed, assigned in device */ 1757 1758 /* PTK RX counters */ 1759 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1760 iwl_mvm_le64_to_tkip_seq(sc->ucast_rsc[tid], 1761 &status->ptk.tkip.seq[tid]); 1762 iwl_mvm_le64_to_aes_seq(sc->ucast_rsc[tid], 1763 &status->ptk.aes.seq[tid]); 1764 } 1765 } 1766 1767 static void iwl_mvm_set_key_rx_seq_idx(struct ieee80211_key_conf *key, 1768 struct iwl_wowlan_status_data *status, 1769 int idx) 1770 { 1771 switch (key->cipher) { 1772 case WLAN_CIPHER_SUITE_CCMP: 1773 case WLAN_CIPHER_SUITE_GCMP: 1774 case WLAN_CIPHER_SUITE_GCMP_256: 1775 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].aes.seq); 1776 break; 1777 case WLAN_CIPHER_SUITE_TKIP: 1778 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].tkip.seq); 1779 break; 1780 default: 1781 WARN_ON(1); 1782 } 1783 } 1784 1785 static void iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf *key, 1786 struct iwl_wowlan_status_data *status, 1787 bool installed) 1788 { 1789 int i; 1790 1791 for (i = 0; i < ARRAY_SIZE(status->gtk_seq); i++) { 1792 if (!status->gtk_seq[i].valid) 1793 continue; 1794 1795 /* Handle the case where we know the key ID */ 1796 if (status->gtk_seq[i].key_id == key->keyidx) { 1797 s8 new_key_id = -1; 1798 1799 if (status->num_of_gtk_rekeys) 1800 new_key_id = status->gtk[0].flags & 1801 IWL_WOWLAN_GTK_IDX_MASK; 1802 1803 /* Don't install a new key's value to an old key */ 1804 if (new_key_id != key->keyidx) 1805 iwl_mvm_set_key_rx_seq_idx(key, status, i); 1806 continue; 1807 } 1808 1809 /* handle the case where we didn't, last key only */ 1810 if (status->gtk_seq[i].key_id == -1 && 1811 (!status->num_of_gtk_rekeys || installed)) 1812 iwl_mvm_set_key_rx_seq_idx(key, status, i); 1813 } 1814 } 1815 1816 struct iwl_mvm_d3_gtk_iter_data { 1817 struct iwl_mvm *mvm; 1818 struct iwl_wowlan_status_data *status; 1819 u32 gtk_cipher, igtk_cipher, bigtk_cipher; 1820 bool unhandled_cipher, igtk_support, bigtk_support; 1821 int num_keys; 1822 }; 1823 1824 static void iwl_mvm_d3_find_last_keys(struct ieee80211_hw *hw, 1825 struct ieee80211_vif *vif, 1826 struct ieee80211_sta *sta, 1827 struct ieee80211_key_conf *key, 1828 void *_data) 1829 { 1830 struct iwl_mvm_d3_gtk_iter_data *data = _data; 1831 1832 if (data->unhandled_cipher) 1833 return; 1834 1835 switch (key->cipher) { 1836 case WLAN_CIPHER_SUITE_WEP40: 1837 case WLAN_CIPHER_SUITE_WEP104: 1838 /* ignore WEP completely, nothing to do */ 1839 return; 1840 case WLAN_CIPHER_SUITE_CCMP: 1841 case WLAN_CIPHER_SUITE_GCMP: 1842 case WLAN_CIPHER_SUITE_GCMP_256: 1843 case WLAN_CIPHER_SUITE_TKIP: 1844 /* we support these */ 1845 data->gtk_cipher = key->cipher; 1846 break; 1847 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 1848 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 1849 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 1850 case WLAN_CIPHER_SUITE_AES_CMAC: 1851 /* we support these */ 1852 if (data->igtk_support && 1853 (key->keyidx == 4 || key->keyidx == 5)) { 1854 data->igtk_cipher = key->cipher; 1855 } else if (data->bigtk_support && 1856 (key->keyidx == 6 || key->keyidx == 7)) { 1857 data->bigtk_cipher = key->cipher; 1858 } else { 1859 data->unhandled_cipher = true; 1860 return; 1861 } 1862 break; 1863 default: 1864 /* everything else - disconnect from AP */ 1865 data->unhandled_cipher = true; 1866 return; 1867 } 1868 1869 data->num_keys++; 1870 } 1871 1872 static void 1873 iwl_mvm_d3_set_igtk_bigtk_ipn(const struct iwl_multicast_key_data *key, 1874 struct ieee80211_key_seq *seq, u32 cipher) 1875 { 1876 switch (cipher) { 1877 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 1878 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 1879 BUILD_BUG_ON(sizeof(seq->aes_gmac.pn) != sizeof(key->ipn)); 1880 memcpy(seq->aes_gmac.pn, key->ipn, sizeof(seq->aes_gmac.pn)); 1881 break; 1882 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 1883 case WLAN_CIPHER_SUITE_AES_CMAC: 1884 BUILD_BUG_ON(sizeof(seq->aes_cmac.pn) != sizeof(key->ipn)); 1885 memcpy(seq->aes_cmac.pn, key->ipn, sizeof(seq->aes_cmac.pn)); 1886 break; 1887 default: 1888 WARN_ON(1); 1889 } 1890 } 1891 1892 static void 1893 iwl_mvm_d3_update_igtk_bigtk(struct iwl_wowlan_status_data *status, 1894 struct ieee80211_key_conf *key, 1895 struct iwl_multicast_key_data *key_data) 1896 { 1897 if (status->num_of_gtk_rekeys && key_data->len) { 1898 /* remove rekeyed key */ 1899 ieee80211_remove_key(key); 1900 } else { 1901 struct ieee80211_key_seq seq; 1902 1903 iwl_mvm_d3_set_igtk_bigtk_ipn(key_data, 1904 &seq, 1905 key->cipher); 1906 ieee80211_set_key_rx_seq(key, 0, &seq); 1907 } 1908 } 1909 1910 static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw, 1911 struct ieee80211_vif *vif, 1912 struct ieee80211_sta *sta, 1913 struct ieee80211_key_conf *key, 1914 void *_data) 1915 { 1916 struct iwl_mvm_d3_gtk_iter_data *data = _data; 1917 struct iwl_wowlan_status_data *status = data->status; 1918 s8 keyidx; 1919 1920 if (data->unhandled_cipher) 1921 return; 1922 1923 switch (key->cipher) { 1924 case WLAN_CIPHER_SUITE_WEP40: 1925 case WLAN_CIPHER_SUITE_WEP104: 1926 /* ignore WEP completely, nothing to do */ 1927 return; 1928 case WLAN_CIPHER_SUITE_CCMP: 1929 case WLAN_CIPHER_SUITE_GCMP: 1930 case WLAN_CIPHER_SUITE_GCMP_256: 1931 if (sta) { 1932 atomic64_set(&key->tx_pn, status->ptk.aes.tx_pn); 1933 iwl_mvm_set_aes_ptk_rx_seq(data->mvm, status, sta, key); 1934 return; 1935 } 1936 fallthrough; 1937 case WLAN_CIPHER_SUITE_TKIP: 1938 if (sta) { 1939 atomic64_set(&key->tx_pn, status->ptk.tkip.tx_pn); 1940 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.tkip.seq); 1941 return; 1942 } 1943 keyidx = key->keyidx; 1944 /* The current key is always sent by the FW, even if it wasn't 1945 * rekeyed during D3. 1946 * We remove an existing key if it has the same index as 1947 * a new key 1948 */ 1949 if (status->num_of_gtk_rekeys && 1950 ((status->gtk[0].len && keyidx == status->gtk[0].id) || 1951 (status->gtk[1].len && keyidx == status->gtk[1].id))) { 1952 ieee80211_remove_key(key); 1953 } else { 1954 iwl_mvm_set_key_rx_seq(key, data->status, false); 1955 } 1956 break; 1957 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 1958 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 1959 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 1960 case WLAN_CIPHER_SUITE_AES_CMAC: 1961 if (key->keyidx == 4 || key->keyidx == 5) { 1962 iwl_mvm_d3_update_igtk_bigtk(status, key, 1963 &status->igtk); 1964 } 1965 if (key->keyidx == 6 || key->keyidx == 7) { 1966 u8 idx = key->keyidx == status->bigtk[1].id; 1967 1968 iwl_mvm_d3_update_igtk_bigtk(status, key, 1969 &status->bigtk[idx]); 1970 } 1971 } 1972 } 1973 1974 static bool iwl_mvm_gtk_rekey(struct iwl_wowlan_status_data *status, 1975 struct ieee80211_vif *vif, 1976 struct iwl_mvm *mvm, u32 gtk_cipher) 1977 { 1978 int i, j; 1979 struct ieee80211_key_conf *key; 1980 struct { 1981 struct ieee80211_key_conf conf; 1982 u8 key[32]; 1983 } conf = { 1984 .conf.cipher = gtk_cipher, 1985 }; 1986 int link_id = vif->active_links ? __ffs(vif->active_links) : -1; 1987 1988 BUILD_BUG_ON(WLAN_KEY_LEN_CCMP != WLAN_KEY_LEN_GCMP); 1989 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_CCMP); 1990 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_GCMP_256); 1991 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_TKIP); 1992 BUILD_BUG_ON(sizeof(conf.key) < sizeof(status->gtk[0].key)); 1993 1994 switch (gtk_cipher) { 1995 case WLAN_CIPHER_SUITE_CCMP: 1996 case WLAN_CIPHER_SUITE_GCMP: 1997 conf.conf.keylen = WLAN_KEY_LEN_CCMP; 1998 break; 1999 case WLAN_CIPHER_SUITE_GCMP_256: 2000 conf.conf.keylen = WLAN_KEY_LEN_GCMP_256; 2001 break; 2002 case WLAN_CIPHER_SUITE_TKIP: 2003 conf.conf.keylen = WLAN_KEY_LEN_TKIP; 2004 break; 2005 default: 2006 WARN_ON(1); 2007 } 2008 2009 for (i = 0; i < ARRAY_SIZE(status->gtk); i++) { 2010 if (!status->gtk[i].len) 2011 continue; 2012 2013 conf.conf.keyidx = status->gtk[i].id; 2014 IWL_DEBUG_WOWLAN(mvm, 2015 "Received from FW GTK cipher %d, key index %d\n", 2016 conf.conf.cipher, conf.conf.keyidx); 2017 memcpy(conf.conf.key, status->gtk[i].key, 2018 sizeof(status->gtk[i].key)); 2019 2020 key = ieee80211_gtk_rekey_add(vif, &conf.conf, link_id); 2021 if (IS_ERR(key)) 2022 return false; 2023 2024 for (j = 0; j < ARRAY_SIZE(status->gtk_seq); j++) { 2025 if (!status->gtk_seq[j].valid || 2026 status->gtk_seq[j].key_id != key->keyidx) 2027 continue; 2028 iwl_mvm_set_key_rx_seq_idx(key, status, j); 2029 break; 2030 } 2031 WARN_ON(j == ARRAY_SIZE(status->gtk_seq)); 2032 } 2033 2034 return true; 2035 } 2036 2037 static bool 2038 iwl_mvm_d3_igtk_bigtk_rekey_add(struct iwl_wowlan_status_data *status, 2039 struct ieee80211_vif *vif, u32 cipher, 2040 struct iwl_multicast_key_data *key_data) 2041 { 2042 struct ieee80211_key_conf *key_config; 2043 struct { 2044 struct ieee80211_key_conf conf; 2045 u8 key[WOWLAN_KEY_MAX_SIZE]; 2046 } conf = { 2047 .conf.cipher = cipher, 2048 .conf.keyidx = key_data->id, 2049 }; 2050 struct ieee80211_key_seq seq; 2051 int link_id = vif->active_links ? __ffs(vif->active_links) : -1; 2052 2053 if (!key_data->len) 2054 return true; 2055 2056 iwl_mvm_d3_set_igtk_bigtk_ipn(key_data, &seq, conf.conf.cipher); 2057 2058 switch (cipher) { 2059 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 2060 conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_128; 2061 break; 2062 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 2063 conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_256; 2064 break; 2065 case WLAN_CIPHER_SUITE_AES_CMAC: 2066 conf.conf.keylen = WLAN_KEY_LEN_AES_CMAC; 2067 break; 2068 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 2069 conf.conf.keylen = WLAN_KEY_LEN_BIP_CMAC_256; 2070 break; 2071 default: 2072 WARN_ON(1); 2073 } 2074 BUILD_BUG_ON(sizeof(conf.key) < sizeof(key_data->key)); 2075 memcpy(conf.conf.key, key_data->key, conf.conf.keylen); 2076 2077 key_config = ieee80211_gtk_rekey_add(vif, &conf.conf, link_id); 2078 if (IS_ERR(key_config)) 2079 return false; 2080 ieee80211_set_key_rx_seq(key_config, 0, &seq); 2081 2082 if (key_config->keyidx == 4 || key_config->keyidx == 5) { 2083 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2084 struct iwl_mvm_vif_link_info *mvm_link; 2085 2086 link_id = link_id < 0 ? 0 : link_id; 2087 mvm_link = mvmvif->link[link_id]; 2088 mvm_link->igtk = key_config; 2089 } 2090 2091 return true; 2092 } 2093 2094 static int iwl_mvm_lookup_wowlan_status_ver(struct iwl_mvm *mvm) 2095 { 2096 u8 notif_ver; 2097 2098 if (!fw_has_api(&mvm->fw->ucode_capa, 2099 IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL)) 2100 return 6; 2101 2102 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */ 2103 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP, 2104 WOWLAN_GET_STATUSES, 0); 2105 if (!notif_ver) 2106 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, 2107 WOWLAN_GET_STATUSES, 7); 2108 2109 return notif_ver; 2110 } 2111 2112 static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm, 2113 struct ieee80211_vif *vif, 2114 struct iwl_wowlan_status_data *status) 2115 { 2116 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2117 struct iwl_mvm_d3_gtk_iter_data gtkdata = { 2118 .mvm = mvm, 2119 .status = status, 2120 }; 2121 int i; 2122 u32 disconnection_reasons = 2123 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 2124 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH; 2125 2126 if (!status || !vif->bss_conf.bssid) 2127 return false; 2128 2129 if (iwl_mvm_lookup_wowlan_status_ver(mvm) > 6 || 2130 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2131 WOWLAN_INFO_NOTIFICATION, 2132 0)) 2133 gtkdata.igtk_support = true; 2134 2135 if (iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2136 WOWLAN_INFO_NOTIFICATION, 2137 0) >= 3) 2138 gtkdata.bigtk_support = true; 2139 2140 /* find last GTK that we used initially, if any */ 2141 ieee80211_iter_keys(mvm->hw, vif, 2142 iwl_mvm_d3_find_last_keys, >kdata); 2143 /* not trying to keep connections with MFP/unhandled ciphers */ 2144 if (gtkdata.unhandled_cipher) 2145 return false; 2146 if (!gtkdata.num_keys) 2147 goto out; 2148 2149 /* 2150 * invalidate all other GTKs that might still exist and update 2151 * the one that we used 2152 */ 2153 ieee80211_iter_keys(mvm->hw, vif, 2154 iwl_mvm_d3_update_keys, >kdata); 2155 2156 if (status->num_of_gtk_rekeys) { 2157 __be64 replay_ctr = cpu_to_be64(status->replay_ctr); 2158 2159 IWL_DEBUG_WOWLAN(mvm, "num of GTK rekeying %d\n", 2160 status->num_of_gtk_rekeys); 2161 2162 if (!iwl_mvm_gtk_rekey(status, vif, mvm, gtkdata.gtk_cipher)) 2163 return false; 2164 2165 if (!iwl_mvm_d3_igtk_bigtk_rekey_add(status, vif, 2166 gtkdata.igtk_cipher, 2167 &status->igtk)) 2168 return false; 2169 2170 for (i = 0; i < ARRAY_SIZE(status->bigtk); i++) { 2171 if (!iwl_mvm_d3_igtk_bigtk_rekey_add(status, vif, 2172 gtkdata.bigtk_cipher, 2173 &status->bigtk[i])) 2174 return false; 2175 } 2176 2177 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid, 2178 (void *)&replay_ctr, GFP_KERNEL); 2179 } 2180 2181 out: 2182 if (iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP, 2183 WOWLAN_GET_STATUSES, 0) < 10) { 2184 mvmvif->seqno_valid = true; 2185 /* +0x10 because the set API expects next-to-use, not last-used */ 2186 mvmvif->seqno = status->non_qos_seq_ctr + 0x10; 2187 } 2188 2189 if (status->wakeup_reasons & disconnection_reasons) 2190 return false; 2191 2192 return true; 2193 } 2194 2195 static void iwl_mvm_convert_gtk_v2(struct iwl_wowlan_status_data *status, 2196 struct iwl_wowlan_gtk_status_v2 *data) 2197 { 2198 BUILD_BUG_ON(sizeof(status->gtk[0].key) < sizeof(data->key)); 2199 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY + 2200 sizeof(data->tkip_mic_key) > 2201 sizeof(status->gtk[0].key)); 2202 2203 status->gtk[0].len = data->key_len; 2204 status->gtk[0].flags = data->key_flags; 2205 2206 memcpy(status->gtk[0].key, data->key, sizeof(data->key)); 2207 2208 /* if it's as long as the TKIP encryption key, copy MIC key */ 2209 if (status->gtk[0].len == NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY) 2210 memcpy(status->gtk[0].key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 2211 data->tkip_mic_key, sizeof(data->tkip_mic_key)); 2212 } 2213 2214 static void iwl_mvm_convert_gtk_v3(struct iwl_wowlan_status_data *status, 2215 struct iwl_wowlan_gtk_status_v3 *data) 2216 { 2217 int data_idx, status_idx = 0; 2218 2219 BUILD_BUG_ON(sizeof(status->gtk[0].key) < sizeof(data[0].key)); 2220 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY + 2221 sizeof(data[0].tkip_mic_key) > 2222 sizeof(status->gtk[0].key)); 2223 BUILD_BUG_ON(ARRAY_SIZE(status->gtk) < WOWLAN_GTK_KEYS_NUM); 2224 for (data_idx = 0; data_idx < ARRAY_SIZE(status->gtk); data_idx++) { 2225 if (!(data[data_idx].key_len)) 2226 continue; 2227 status->gtk[status_idx].len = data[data_idx].key_len; 2228 status->gtk[status_idx].flags = data[data_idx].key_flags; 2229 status->gtk[status_idx].id = status->gtk[status_idx].flags & 2230 IWL_WOWLAN_GTK_IDX_MASK; 2231 2232 memcpy(status->gtk[status_idx].key, data[data_idx].key, 2233 sizeof(data[data_idx].key)); 2234 2235 /* if it's as long as the TKIP encryption key, copy MIC key */ 2236 if (status->gtk[status_idx].len == 2237 NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY) 2238 memcpy(status->gtk[status_idx].key + 2239 NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 2240 data[data_idx].tkip_mic_key, 2241 sizeof(data[data_idx].tkip_mic_key)); 2242 status_idx++; 2243 } 2244 } 2245 2246 static void iwl_mvm_convert_igtk(struct iwl_wowlan_status_data *status, 2247 struct iwl_wowlan_igtk_status *data) 2248 { 2249 int i; 2250 2251 BUILD_BUG_ON(sizeof(status->igtk.key) < sizeof(data->key)); 2252 BUILD_BUG_ON(sizeof(status->igtk.ipn) != sizeof(data->ipn)); 2253 2254 if (!data->key_len) 2255 return; 2256 2257 status->igtk.len = data->key_len; 2258 status->igtk.flags = data->key_flags; 2259 status->igtk.id = u32_get_bits(data->key_flags, 2260 IWL_WOWLAN_IGTK_BIGTK_IDX_MASK) 2261 + WOWLAN_IGTK_MIN_INDEX; 2262 2263 memcpy(status->igtk.key, data->key, sizeof(data->key)); 2264 2265 /* mac80211 expects big endian for memcmp() to work, convert */ 2266 for (i = 0; i < sizeof(data->ipn); i++) 2267 status->igtk.ipn[i] = data->ipn[sizeof(data->ipn) - i - 1]; 2268 } 2269 2270 static void iwl_mvm_convert_bigtk(struct iwl_wowlan_status_data *status, 2271 const struct iwl_wowlan_igtk_status *data) 2272 { 2273 int data_idx, status_idx = 0; 2274 2275 BUILD_BUG_ON(ARRAY_SIZE(status->bigtk) < WOWLAN_BIGTK_KEYS_NUM); 2276 2277 for (data_idx = 0; data_idx < WOWLAN_BIGTK_KEYS_NUM; data_idx++) { 2278 if (!data[data_idx].key_len) 2279 continue; 2280 2281 status->bigtk[status_idx].len = data[data_idx].key_len; 2282 status->bigtk[status_idx].flags = data[data_idx].key_flags; 2283 status->bigtk[status_idx].id = 2284 u32_get_bits(data[data_idx].key_flags, 2285 IWL_WOWLAN_IGTK_BIGTK_IDX_MASK) 2286 + WOWLAN_BIGTK_MIN_INDEX; 2287 2288 BUILD_BUG_ON(sizeof(status->bigtk[status_idx].key) < 2289 sizeof(data[data_idx].key)); 2290 BUILD_BUG_ON(sizeof(status->bigtk[status_idx].ipn) < 2291 sizeof(data[data_idx].ipn)); 2292 2293 memcpy(status->bigtk[status_idx].key, data[data_idx].key, 2294 sizeof(data[data_idx].key)); 2295 memcpy(status->bigtk[status_idx].ipn, data[data_idx].ipn, 2296 sizeof(data[data_idx].ipn)); 2297 status_idx++; 2298 } 2299 } 2300 2301 static void iwl_mvm_parse_wowlan_info_notif(struct iwl_mvm *mvm, 2302 struct iwl_wowlan_info_notif *data, 2303 struct iwl_wowlan_status_data *status, 2304 u32 len) 2305 { 2306 u32 i; 2307 2308 if (!data) { 2309 IWL_ERR(mvm, "iwl_wowlan_info_notif data is NULL\n"); 2310 status = NULL; 2311 return; 2312 } 2313 2314 if (len < sizeof(*data)) { 2315 IWL_ERR(mvm, "Invalid WoWLAN info notification!\n"); 2316 status = NULL; 2317 return; 2318 } 2319 2320 iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc); 2321 iwl_mvm_convert_gtk_v3(status, data->gtk); 2322 iwl_mvm_convert_igtk(status, &data->igtk[0]); 2323 iwl_mvm_convert_bigtk(status, data->bigtk); 2324 status->replay_ctr = le64_to_cpu(data->replay_ctr); 2325 status->pattern_number = le16_to_cpu(data->pattern_number); 2326 for (i = 0; i < IWL_MAX_TID_COUNT; i++) 2327 status->qos_seq_ctr[i] = 2328 le16_to_cpu(data->qos_seq_ctr[i]); 2329 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); 2330 status->num_of_gtk_rekeys = 2331 le32_to_cpu(data->num_of_gtk_rekeys); 2332 status->received_beacons = le32_to_cpu(data->received_beacons); 2333 status->tid_tear_down = data->tid_tear_down; 2334 } 2335 2336 static void 2337 iwl_mvm_parse_wowlan_info_notif_v2(struct iwl_mvm *mvm, 2338 struct iwl_wowlan_info_notif_v2 *data, 2339 struct iwl_wowlan_status_data *status, 2340 u32 len) 2341 { 2342 u32 i; 2343 2344 if (!data) { 2345 IWL_ERR(mvm, "iwl_wowlan_info_notif data is NULL\n"); 2346 status = NULL; 2347 return; 2348 } 2349 2350 if (len < sizeof(*data)) { 2351 IWL_ERR(mvm, "Invalid WoWLAN info notification!\n"); 2352 status = NULL; 2353 return; 2354 } 2355 2356 iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc); 2357 iwl_mvm_convert_gtk_v3(status, data->gtk); 2358 iwl_mvm_convert_igtk(status, &data->igtk[0]); 2359 status->replay_ctr = le64_to_cpu(data->replay_ctr); 2360 status->pattern_number = le16_to_cpu(data->pattern_number); 2361 for (i = 0; i < IWL_MAX_TID_COUNT; i++) 2362 status->qos_seq_ctr[i] = 2363 le16_to_cpu(data->qos_seq_ctr[i]); 2364 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); 2365 status->num_of_gtk_rekeys = 2366 le32_to_cpu(data->num_of_gtk_rekeys); 2367 status->received_beacons = le32_to_cpu(data->received_beacons); 2368 status->tid_tear_down = data->tid_tear_down; 2369 } 2370 2371 /* Occasionally, templates would be nice. This is one of those times ... */ 2372 #define iwl_mvm_parse_wowlan_status_common(_ver) \ 2373 static struct iwl_wowlan_status_data * \ 2374 iwl_mvm_parse_wowlan_status_common_ ## _ver(struct iwl_mvm *mvm, \ 2375 struct iwl_wowlan_status_ ##_ver *data,\ 2376 int len) \ 2377 { \ 2378 struct iwl_wowlan_status_data *status; \ 2379 int data_size, i; \ 2380 \ 2381 if (len < sizeof(*data)) { \ 2382 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \ 2383 return NULL; \ 2384 } \ 2385 \ 2386 data_size = ALIGN(le32_to_cpu(data->wake_packet_bufsize), 4); \ 2387 if (len != sizeof(*data) + data_size) { \ 2388 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \ 2389 return NULL; \ 2390 } \ 2391 \ 2392 status = kzalloc(sizeof(*status), GFP_KERNEL); \ 2393 if (!status) \ 2394 return NULL; \ 2395 \ 2396 /* copy all the common fields */ \ 2397 status->replay_ctr = le64_to_cpu(data->replay_ctr); \ 2398 status->pattern_number = le16_to_cpu(data->pattern_number); \ 2399 status->non_qos_seq_ctr = le16_to_cpu(data->non_qos_seq_ctr); \ 2400 for (i = 0; i < 8; i++) \ 2401 status->qos_seq_ctr[i] = \ 2402 le16_to_cpu(data->qos_seq_ctr[i]); \ 2403 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); \ 2404 status->num_of_gtk_rekeys = \ 2405 le32_to_cpu(data->num_of_gtk_rekeys); \ 2406 status->received_beacons = le32_to_cpu(data->received_beacons); \ 2407 status->wake_packet_length = \ 2408 le32_to_cpu(data->wake_packet_length); \ 2409 status->wake_packet_bufsize = \ 2410 le32_to_cpu(data->wake_packet_bufsize); \ 2411 if (status->wake_packet_bufsize) { \ 2412 status->wake_packet = \ 2413 kmemdup(data->wake_packet, \ 2414 status->wake_packet_bufsize, \ 2415 GFP_KERNEL); \ 2416 if (!status->wake_packet) { \ 2417 kfree(status); \ 2418 return NULL; \ 2419 } \ 2420 } else { \ 2421 status->wake_packet = NULL; \ 2422 } \ 2423 \ 2424 return status; \ 2425 } 2426 2427 iwl_mvm_parse_wowlan_status_common(v6) 2428 iwl_mvm_parse_wowlan_status_common(v7) 2429 iwl_mvm_parse_wowlan_status_common(v9) 2430 iwl_mvm_parse_wowlan_status_common(v12) 2431 2432 static struct iwl_wowlan_status_data * 2433 iwl_mvm_send_wowlan_get_status(struct iwl_mvm *mvm, u8 sta_id) 2434 { 2435 struct iwl_wowlan_status_data *status; 2436 struct iwl_wowlan_get_status_cmd get_status_cmd = { 2437 .sta_id = cpu_to_le32(sta_id), 2438 }; 2439 struct iwl_host_cmd cmd = { 2440 .id = WOWLAN_GET_STATUSES, 2441 .flags = CMD_WANT_SKB, 2442 .data = { &get_status_cmd, }, 2443 .len = { sizeof(get_status_cmd), }, 2444 }; 2445 int ret, len; 2446 u8 notif_ver; 2447 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id, 2448 IWL_FW_CMD_VER_UNKNOWN); 2449 2450 if (cmd_ver == IWL_FW_CMD_VER_UNKNOWN) 2451 cmd.len[0] = 0; 2452 2453 lockdep_assert_held(&mvm->mutex); 2454 2455 ret = iwl_mvm_send_cmd(mvm, &cmd); 2456 if (ret) { 2457 IWL_ERR(mvm, "failed to query wakeup status (%d)\n", ret); 2458 return ERR_PTR(ret); 2459 } 2460 2461 len = iwl_rx_packet_payload_len(cmd.resp_pkt); 2462 2463 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */ 2464 notif_ver = iwl_mvm_lookup_wowlan_status_ver(mvm); 2465 2466 if (notif_ver < 7) { 2467 struct iwl_wowlan_status_v6 *v6 = (void *)cmd.resp_pkt->data; 2468 2469 status = iwl_mvm_parse_wowlan_status_common_v6(mvm, v6, len); 2470 if (!status) 2471 goto out_free_resp; 2472 2473 BUILD_BUG_ON(sizeof(v6->gtk.decrypt_key) > 2474 sizeof(status->gtk[0].key)); 2475 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY + 2476 sizeof(v6->gtk.tkip_mic_key) > 2477 sizeof(status->gtk[0].key)); 2478 2479 /* copy GTK info to the right place */ 2480 memcpy(status->gtk[0].key, v6->gtk.decrypt_key, 2481 sizeof(v6->gtk.decrypt_key)); 2482 memcpy(status->gtk[0].key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 2483 v6->gtk.tkip_mic_key, 2484 sizeof(v6->gtk.tkip_mic_key)); 2485 2486 iwl_mvm_convert_key_counters(status, &v6->gtk.rsc.all_tsc_rsc); 2487 2488 /* hardcode the key length to 16 since v6 only supports 16 */ 2489 status->gtk[0].len = 16; 2490 2491 /* 2492 * The key index only uses 2 bits (values 0 to 3) and 2493 * we always set bit 7 which means this is the 2494 * currently used key. 2495 */ 2496 status->gtk[0].flags = v6->gtk.key_index | BIT(7); 2497 } else if (notif_ver == 7) { 2498 struct iwl_wowlan_status_v7 *v7 = (void *)cmd.resp_pkt->data; 2499 2500 status = iwl_mvm_parse_wowlan_status_common_v7(mvm, v7, len); 2501 if (!status) 2502 goto out_free_resp; 2503 2504 iwl_mvm_convert_key_counters(status, &v7->gtk[0].rsc.all_tsc_rsc); 2505 iwl_mvm_convert_gtk_v2(status, &v7->gtk[0]); 2506 iwl_mvm_convert_igtk(status, &v7->igtk[0]); 2507 } else if (notif_ver == 9 || notif_ver == 10 || notif_ver == 11) { 2508 struct iwl_wowlan_status_v9 *v9 = (void *)cmd.resp_pkt->data; 2509 2510 /* these three command versions have same layout and size, the 2511 * difference is only in a few not used (reserved) fields. 2512 */ 2513 status = iwl_mvm_parse_wowlan_status_common_v9(mvm, v9, len); 2514 if (!status) 2515 goto out_free_resp; 2516 2517 iwl_mvm_convert_key_counters(status, &v9->gtk[0].rsc.all_tsc_rsc); 2518 iwl_mvm_convert_gtk_v2(status, &v9->gtk[0]); 2519 iwl_mvm_convert_igtk(status, &v9->igtk[0]); 2520 2521 status->tid_tear_down = v9->tid_tear_down; 2522 } else if (notif_ver == 12) { 2523 struct iwl_wowlan_status_v12 *v12 = (void *)cmd.resp_pkt->data; 2524 2525 status = iwl_mvm_parse_wowlan_status_common_v12(mvm, v12, len); 2526 if (!status) 2527 goto out_free_resp; 2528 2529 iwl_mvm_convert_key_counters_v5(status, &v12->gtk[0].sc); 2530 iwl_mvm_convert_gtk_v3(status, v12->gtk); 2531 iwl_mvm_convert_igtk(status, &v12->igtk[0]); 2532 2533 status->tid_tear_down = v12->tid_tear_down; 2534 } else { 2535 IWL_ERR(mvm, 2536 "Firmware advertises unknown WoWLAN status response %d!\n", 2537 notif_ver); 2538 status = NULL; 2539 } 2540 2541 out_free_resp: 2542 iwl_free_resp(&cmd); 2543 return status; 2544 } 2545 2546 /* releases the MVM mutex */ 2547 static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm, 2548 struct ieee80211_vif *vif, 2549 struct iwl_wowlan_status_data *status) 2550 { 2551 int i; 2552 bool keep = false; 2553 struct iwl_mvm_sta *mvm_ap_sta; 2554 2555 if (!status) 2556 goto out_unlock; 2557 2558 IWL_DEBUG_WOWLAN(mvm, "wakeup reason 0x%x\n", 2559 status->wakeup_reasons); 2560 2561 /* still at hard-coded place 0 for D3 image */ 2562 mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, 0); 2563 if (!mvm_ap_sta) 2564 goto out_unlock; 2565 2566 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 2567 u16 seq = status->qos_seq_ctr[i]; 2568 /* firmware stores last-used value, we store next value */ 2569 seq += 0x10; 2570 mvm_ap_sta->tid_data[i].seq_number = seq; 2571 } 2572 2573 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000) { 2574 i = mvm->offload_tid; 2575 iwl_trans_set_q_ptrs(mvm->trans, 2576 mvm_ap_sta->tid_data[i].txq_id, 2577 mvm_ap_sta->tid_data[i].seq_number >> 4); 2578 } 2579 2580 iwl_mvm_report_wakeup_reasons(mvm, vif, status); 2581 2582 keep = iwl_mvm_setup_connection_keep(mvm, vif, status); 2583 out_unlock: 2584 mutex_unlock(&mvm->mutex); 2585 return keep; 2586 } 2587 2588 #define ND_QUERY_BUF_LEN (sizeof(struct iwl_scan_offload_profile_match) * \ 2589 IWL_SCAN_MAX_PROFILES) 2590 2591 struct iwl_mvm_nd_results { 2592 u32 matched_profiles; 2593 u8 matches[ND_QUERY_BUF_LEN]; 2594 }; 2595 2596 static int 2597 iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm, 2598 struct iwl_mvm_nd_results *results) 2599 { 2600 struct iwl_scan_offload_match_info *query; 2601 struct iwl_host_cmd cmd = { 2602 .id = SCAN_OFFLOAD_PROFILES_QUERY_CMD, 2603 .flags = CMD_WANT_SKB, 2604 }; 2605 int ret, len; 2606 size_t query_len, matches_len; 2607 int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw); 2608 2609 ret = iwl_mvm_send_cmd(mvm, &cmd); 2610 if (ret) { 2611 IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret); 2612 return ret; 2613 } 2614 2615 if (fw_has_api(&mvm->fw->ucode_capa, 2616 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2617 query_len = sizeof(struct iwl_scan_offload_match_info); 2618 matches_len = sizeof(struct iwl_scan_offload_profile_match) * 2619 max_profiles; 2620 } else { 2621 query_len = sizeof(struct iwl_scan_offload_profiles_query_v1); 2622 matches_len = sizeof(struct iwl_scan_offload_profile_match_v1) * 2623 max_profiles; 2624 } 2625 2626 len = iwl_rx_packet_payload_len(cmd.resp_pkt); 2627 if (len < query_len) { 2628 IWL_ERR(mvm, "Invalid scan offload profiles query response!\n"); 2629 ret = -EIO; 2630 goto out_free_resp; 2631 } 2632 2633 query = (void *)cmd.resp_pkt->data; 2634 2635 results->matched_profiles = le32_to_cpu(query->matched_profiles); 2636 memcpy(results->matches, query->matches, matches_len); 2637 2638 #ifdef CONFIG_IWLWIFI_DEBUGFS 2639 mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done); 2640 #endif 2641 2642 out_free_resp: 2643 iwl_free_resp(&cmd); 2644 return ret; 2645 } 2646 2647 static int iwl_mvm_query_num_match_chans(struct iwl_mvm *mvm, 2648 struct iwl_mvm_nd_results *results, 2649 int idx) 2650 { 2651 int n_chans = 0, i; 2652 2653 if (fw_has_api(&mvm->fw->ucode_capa, 2654 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2655 struct iwl_scan_offload_profile_match *matches = 2656 (void *)results->matches; 2657 2658 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; i++) 2659 n_chans += hweight8(matches[idx].matching_channels[i]); 2660 } else { 2661 struct iwl_scan_offload_profile_match_v1 *matches = 2662 (void *)results->matches; 2663 2664 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1; i++) 2665 n_chans += hweight8(matches[idx].matching_channels[i]); 2666 } 2667 2668 return n_chans; 2669 } 2670 2671 static void iwl_mvm_query_set_freqs(struct iwl_mvm *mvm, 2672 struct iwl_mvm_nd_results *results, 2673 struct cfg80211_wowlan_nd_match *match, 2674 int idx) 2675 { 2676 int i; 2677 2678 if (fw_has_api(&mvm->fw->ucode_capa, 2679 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2680 struct iwl_scan_offload_profile_match *matches = 2681 (void *)results->matches; 2682 2683 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; i++) 2684 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8))) 2685 match->channels[match->n_channels++] = 2686 mvm->nd_channels[i]->center_freq; 2687 } else { 2688 struct iwl_scan_offload_profile_match_v1 *matches = 2689 (void *)results->matches; 2690 2691 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1 * 8; i++) 2692 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8))) 2693 match->channels[match->n_channels++] = 2694 mvm->nd_channels[i]->center_freq; 2695 } 2696 } 2697 2698 /** 2699 * enum iwl_d3_notif - d3 notifications 2700 * @IWL_D3_NOTIF_WOWLAN_INFO: WOWLAN_INFO_NOTIF was received 2701 * @IWL_D3_NOTIF_WOWLAN_WAKE_PKT: WOWLAN_WAKE_PKT_NOTIF was received 2702 * @IWL_D3_NOTIF_PROT_OFFLOAD: PROT_OFFLOAD_NOTIF was received 2703 * @IWL_D3_ND_MATCH_INFO: OFFLOAD_MATCH_INFO_NOTIF was received 2704 * @IWL_D3_NOTIF_D3_END_NOTIF: D3_END_NOTIF was received 2705 */ 2706 enum iwl_d3_notif { 2707 IWL_D3_NOTIF_WOWLAN_INFO = BIT(0), 2708 IWL_D3_NOTIF_WOWLAN_WAKE_PKT = BIT(1), 2709 IWL_D3_NOTIF_PROT_OFFLOAD = BIT(2), 2710 IWL_D3_ND_MATCH_INFO = BIT(3), 2711 IWL_D3_NOTIF_D3_END_NOTIF = BIT(4) 2712 }; 2713 2714 /* manage d3 resume data */ 2715 struct iwl_d3_data { 2716 struct iwl_wowlan_status_data *status; 2717 bool test; 2718 u32 d3_end_flags; 2719 u32 notif_expected; /* bitmap - see &enum iwl_d3_notif */ 2720 u32 notif_received; /* bitmap - see &enum iwl_d3_notif */ 2721 struct iwl_mvm_nd_results *nd_results; 2722 bool nd_results_valid; 2723 }; 2724 2725 static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm, 2726 struct ieee80211_vif *vif, 2727 struct iwl_d3_data *d3_data) 2728 { 2729 struct cfg80211_wowlan_nd_info *net_detect = NULL; 2730 struct cfg80211_wowlan_wakeup wakeup = { 2731 .pattern_idx = -1, 2732 }; 2733 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; 2734 unsigned long matched_profiles; 2735 u32 reasons = 0; 2736 int i, n_matches, ret; 2737 2738 if (WARN_ON(!d3_data || !d3_data->status)) 2739 goto out; 2740 2741 reasons = d3_data->status->wakeup_reasons; 2742 2743 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 2744 wakeup.rfkill_release = true; 2745 2746 if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) 2747 goto out; 2748 2749 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2750 WOWLAN_INFO_NOTIFICATION, 0)) { 2751 IWL_INFO(mvm, "Query FW for ND results\n"); 2752 ret = iwl_mvm_netdetect_query_results(mvm, d3_data->nd_results); 2753 2754 } else { 2755 IWL_INFO(mvm, "Notification based ND results\n"); 2756 ret = d3_data->nd_results_valid ? 0 : -1; 2757 } 2758 2759 if (ret || !d3_data->nd_results->matched_profiles) { 2760 wakeup_report = NULL; 2761 goto out; 2762 } 2763 2764 matched_profiles = d3_data->nd_results->matched_profiles; 2765 if (mvm->n_nd_match_sets) { 2766 n_matches = hweight_long(matched_profiles); 2767 } else { 2768 IWL_ERR(mvm, "no net detect match information available\n"); 2769 n_matches = 0; 2770 } 2771 2772 net_detect = kzalloc(struct_size(net_detect, matches, n_matches), 2773 GFP_KERNEL); 2774 if (!net_detect || !n_matches) 2775 goto out_report_nd; 2776 2777 for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) { 2778 struct cfg80211_wowlan_nd_match *match; 2779 int idx, n_channels = 0; 2780 2781 n_channels = iwl_mvm_query_num_match_chans(mvm, 2782 d3_data->nd_results, 2783 i); 2784 2785 match = kzalloc(struct_size(match, channels, n_channels), 2786 GFP_KERNEL); 2787 if (!match) 2788 goto out_report_nd; 2789 2790 net_detect->matches[net_detect->n_matches++] = match; 2791 2792 /* We inverted the order of the SSIDs in the scan 2793 * request, so invert the index here. 2794 */ 2795 idx = mvm->n_nd_match_sets - i - 1; 2796 match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len; 2797 memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid, 2798 match->ssid.ssid_len); 2799 2800 if (mvm->n_nd_channels < n_channels) 2801 continue; 2802 2803 iwl_mvm_query_set_freqs(mvm, d3_data->nd_results, match, i); 2804 } 2805 2806 out_report_nd: 2807 wakeup.net_detect = net_detect; 2808 out: 2809 iwl_mvm_free_nd(mvm); 2810 2811 mutex_unlock(&mvm->mutex); 2812 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); 2813 2814 if (net_detect) { 2815 for (i = 0; i < net_detect->n_matches; i++) 2816 kfree(net_detect->matches[i]); 2817 kfree(net_detect); 2818 } 2819 } 2820 2821 static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac, 2822 struct ieee80211_vif *vif) 2823 { 2824 /* skip the one we keep connection on */ 2825 if (data == vif) 2826 return; 2827 2828 if (vif->type == NL80211_IFTYPE_STATION) 2829 ieee80211_resume_disconnect(vif); 2830 } 2831 2832 static bool iwl_mvm_rt_status(struct iwl_trans *trans, u32 base, u32 *err_id) 2833 { 2834 struct error_table_start { 2835 /* cf. struct iwl_error_event_table */ 2836 u32 valid; 2837 __le32 err_id; 2838 } err_info; 2839 2840 if (!base) 2841 return false; 2842 2843 iwl_trans_read_mem_bytes(trans, base, 2844 &err_info, sizeof(err_info)); 2845 if (err_info.valid && err_id) 2846 *err_id = le32_to_cpu(err_info.err_id); 2847 2848 return !!err_info.valid; 2849 } 2850 2851 static bool iwl_mvm_check_rt_status(struct iwl_mvm *mvm, 2852 struct ieee80211_vif *vif) 2853 { 2854 u32 err_id; 2855 2856 /* check for lmac1 error */ 2857 if (iwl_mvm_rt_status(mvm->trans, 2858 mvm->trans->dbg.lmac_error_event_table[0], 2859 &err_id)) { 2860 if (err_id == RF_KILL_INDICATOR_FOR_WOWLAN) { 2861 struct cfg80211_wowlan_wakeup wakeup = { 2862 .rfkill_release = true, 2863 }; 2864 ieee80211_report_wowlan_wakeup(vif, &wakeup, 2865 GFP_KERNEL); 2866 } 2867 return true; 2868 } 2869 2870 /* check if we have lmac2 set and check for error */ 2871 if (iwl_mvm_rt_status(mvm->trans, 2872 mvm->trans->dbg.lmac_error_event_table[1], NULL)) 2873 return true; 2874 2875 /* check for umac error */ 2876 if (iwl_mvm_rt_status(mvm->trans, 2877 mvm->trans->dbg.umac_error_event_table, NULL)) 2878 return true; 2879 2880 return false; 2881 } 2882 2883 /* 2884 * This function assumes: 2885 * 1. The mutex is already held. 2886 * 2. The callee functions unlock the mutex. 2887 */ 2888 static bool 2889 iwl_mvm_choose_query_wakeup_reasons(struct iwl_mvm *mvm, 2890 struct ieee80211_vif *vif, 2891 struct iwl_d3_data *d3_data) 2892 { 2893 lockdep_assert_held(&mvm->mutex); 2894 2895 /* if FW uses status notification, status shouldn't be NULL here */ 2896 if (!d3_data->status) { 2897 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2898 u8 sta_id = mvm->net_detect ? IWL_MVM_INVALID_STA : 2899 mvmvif->deflink.ap_sta_id; 2900 2901 /* bug - FW with MLO has status notification */ 2902 WARN_ON(ieee80211_vif_is_mld(vif)); 2903 2904 d3_data->status = iwl_mvm_send_wowlan_get_status(mvm, sta_id); 2905 } 2906 2907 if (mvm->net_detect) { 2908 iwl_mvm_query_netdetect_reasons(mvm, vif, d3_data); 2909 } else { 2910 bool keep = iwl_mvm_query_wakeup_reasons(mvm, vif, 2911 d3_data->status); 2912 2913 #ifdef CONFIG_IWLWIFI_DEBUGFS 2914 if (keep) 2915 mvm->keep_vif = vif; 2916 #endif 2917 2918 return keep; 2919 } 2920 return false; 2921 } 2922 2923 #define IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT (IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET | \ 2924 IWL_WOWLAN_WAKEUP_BY_PATTERN | \ 2925 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN |\ 2926 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN_WILDCARD |\ 2927 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN |\ 2928 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN_WILDCARD) 2929 2930 static int iwl_mvm_wowlan_store_wake_pkt(struct iwl_mvm *mvm, 2931 struct iwl_wowlan_wake_pkt_notif *notif, 2932 struct iwl_wowlan_status_data *status, 2933 u32 len) 2934 { 2935 u32 data_size, packet_len = le32_to_cpu(notif->wake_packet_length); 2936 2937 if (len < sizeof(*notif)) { 2938 IWL_ERR(mvm, "Invalid WoWLAN wake packet notification!\n"); 2939 return -EIO; 2940 } 2941 2942 if (WARN_ON(!status)) { 2943 IWL_ERR(mvm, "Got wake packet notification but wowlan status data is NULL\n"); 2944 return -EIO; 2945 } 2946 2947 if (WARN_ON(!(status->wakeup_reasons & 2948 IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT))) { 2949 IWL_ERR(mvm, "Got wakeup packet but wakeup reason is %x\n", 2950 status->wakeup_reasons); 2951 return -EIO; 2952 } 2953 2954 data_size = len - offsetof(struct iwl_wowlan_wake_pkt_notif, wake_packet); 2955 2956 /* data_size got the padding from the notification, remove it. */ 2957 if (packet_len < data_size) 2958 data_size = packet_len; 2959 2960 status->wake_packet = kmemdup(notif->wake_packet, data_size, 2961 GFP_ATOMIC); 2962 2963 if (!status->wake_packet) 2964 return -ENOMEM; 2965 2966 status->wake_packet_length = packet_len; 2967 status->wake_packet_bufsize = data_size; 2968 2969 return 0; 2970 } 2971 2972 static void iwl_mvm_nd_match_info_handler(struct iwl_mvm *mvm, 2973 struct iwl_d3_data *d3_data, 2974 struct iwl_scan_offload_match_info *notif, 2975 u32 len) 2976 { 2977 struct iwl_wowlan_status_data *status = d3_data->status; 2978 struct ieee80211_vif *vif = iwl_mvm_get_bss_vif(mvm); 2979 struct iwl_mvm_nd_results *results = d3_data->nd_results; 2980 size_t i, matches_len = sizeof(struct iwl_scan_offload_profile_match) * 2981 iwl_umac_scan_get_max_profiles(mvm->fw); 2982 2983 if (IS_ERR_OR_NULL(vif)) 2984 return; 2985 2986 if (len < sizeof(struct iwl_scan_offload_match_info)) { 2987 IWL_ERR(mvm, "Invalid scan match info notification\n"); 2988 return; 2989 } 2990 2991 if (!mvm->net_detect) { 2992 IWL_ERR(mvm, "Unexpected scan match info notification\n"); 2993 return; 2994 } 2995 2996 if (!status || status->wakeup_reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) { 2997 IWL_ERR(mvm, 2998 "Ignore scan match info notification: no reason\n"); 2999 return; 3000 } 3001 3002 #ifdef CONFIG_IWLWIFI_DEBUGFS 3003 mvm->last_netdetect_scans = le32_to_cpu(notif->n_scans_done); 3004 #endif 3005 3006 results->matched_profiles = le32_to_cpu(notif->matched_profiles); 3007 IWL_INFO(mvm, "number of matched profiles=%u\n", 3008 results->matched_profiles); 3009 3010 if (results->matched_profiles) { 3011 memcpy(results->matches, notif->matches, matches_len); 3012 d3_data->nd_results_valid = true; 3013 } 3014 3015 /* no scan should be active at this point */ 3016 mvm->scan_status = 0; 3017 for (i = 0; i < mvm->max_scans; i++) 3018 mvm->scan_uid_status[i] = 0; 3019 } 3020 3021 static bool iwl_mvm_wait_d3_notif(struct iwl_notif_wait_data *notif_wait, 3022 struct iwl_rx_packet *pkt, void *data) 3023 { 3024 struct iwl_mvm *mvm = 3025 container_of(notif_wait, struct iwl_mvm, notif_wait); 3026 struct iwl_d3_data *d3_data = data; 3027 u32 len = iwl_rx_packet_payload_len(pkt); 3028 int ret; 3029 int wowlan_info_ver = iwl_fw_lookup_notif_ver(mvm->fw, 3030 PROT_OFFLOAD_GROUP, 3031 WOWLAN_INFO_NOTIFICATION, 3032 IWL_FW_CMD_VER_UNKNOWN); 3033 3034 3035 switch (WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) { 3036 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION): { 3037 3038 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_INFO) { 3039 /* We might get two notifications due to dual bss */ 3040 IWL_DEBUG_WOWLAN(mvm, 3041 "Got additional wowlan info notification\n"); 3042 break; 3043 } 3044 3045 if (wowlan_info_ver < 2) { 3046 struct iwl_wowlan_info_notif_v1 *notif_v1 = 3047 (void *)pkt->data; 3048 struct iwl_wowlan_info_notif_v2 *notif_v2; 3049 3050 notif_v2 = kmemdup(notif_v1, sizeof(*notif_v2), GFP_ATOMIC); 3051 3052 if (!notif_v2) 3053 return false; 3054 3055 notif_v2->tid_tear_down = notif_v1->tid_tear_down; 3056 notif_v2->station_id = notif_v1->station_id; 3057 memset_after(notif_v2, 0, station_id); 3058 iwl_mvm_parse_wowlan_info_notif_v2(mvm, notif_v2, 3059 d3_data->status, 3060 len); 3061 kfree(notif_v2); 3062 3063 } else if (wowlan_info_ver == 2) { 3064 struct iwl_wowlan_info_notif_v2 *notif_v2 = 3065 (void *)pkt->data; 3066 3067 iwl_mvm_parse_wowlan_info_notif_v2(mvm, notif_v2, 3068 d3_data->status, 3069 len); 3070 } else { 3071 struct iwl_wowlan_info_notif *notif = 3072 (void *)pkt->data; 3073 3074 iwl_mvm_parse_wowlan_info_notif(mvm, notif, 3075 d3_data->status, len); 3076 } 3077 3078 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_INFO; 3079 3080 if (d3_data->status && 3081 d3_data->status->wakeup_reasons & IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT) 3082 /* We are supposed to get also wake packet notif */ 3083 d3_data->notif_expected |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT; 3084 3085 break; 3086 } 3087 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION): { 3088 struct iwl_wowlan_wake_pkt_notif *notif = (void *)pkt->data; 3089 3090 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_WAKE_PKT) { 3091 /* We shouldn't get two wake packet notifications */ 3092 IWL_ERR(mvm, 3093 "Got additional wowlan wake packet notification\n"); 3094 } else { 3095 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT; 3096 len = iwl_rx_packet_payload_len(pkt); 3097 ret = iwl_mvm_wowlan_store_wake_pkt(mvm, notif, 3098 d3_data->status, 3099 len); 3100 if (ret) 3101 IWL_ERR(mvm, 3102 "Can't parse WOWLAN_WAKE_PKT_NOTIFICATION\n"); 3103 } 3104 3105 break; 3106 } 3107 case WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF): { 3108 struct iwl_scan_offload_match_info *notif = (void *)pkt->data; 3109 3110 if (d3_data->notif_received & IWL_D3_ND_MATCH_INFO) { 3111 IWL_ERR(mvm, 3112 "Got additional netdetect match info\n"); 3113 break; 3114 } 3115 3116 d3_data->notif_received |= IWL_D3_ND_MATCH_INFO; 3117 3118 /* explicitly set this in the 'expected' as well */ 3119 d3_data->notif_expected |= IWL_D3_ND_MATCH_INFO; 3120 3121 len = iwl_rx_packet_payload_len(pkt); 3122 iwl_mvm_nd_match_info_handler(mvm, d3_data, notif, len); 3123 break; 3124 } 3125 case WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION): { 3126 struct iwl_mvm_d3_end_notif *notif = (void *)pkt->data; 3127 3128 d3_data->d3_end_flags = __le32_to_cpu(notif->flags); 3129 d3_data->notif_received |= IWL_D3_NOTIF_D3_END_NOTIF; 3130 3131 break; 3132 } 3133 default: 3134 WARN_ON(1); 3135 } 3136 3137 return d3_data->notif_received == d3_data->notif_expected; 3138 } 3139 3140 static int iwl_mvm_resume_firmware(struct iwl_mvm *mvm, bool test) 3141 { 3142 int ret; 3143 enum iwl_d3_status d3_status; 3144 struct iwl_host_cmd cmd = { 3145 .id = D0I3_END_CMD, 3146 .flags = CMD_WANT_SKB | CMD_SEND_IN_D3, 3147 }; 3148 bool reset = fw_has_capa(&mvm->fw->ucode_capa, 3149 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 3150 3151 ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, !reset); 3152 if (ret) 3153 return ret; 3154 3155 if (d3_status != IWL_D3_STATUS_ALIVE) { 3156 IWL_INFO(mvm, "Device was reset during suspend\n"); 3157 return -ENOENT; 3158 } 3159 3160 /* 3161 * We should trigger resume flow using command only for 22000 family 3162 * AX210 and above don't need the command since they have 3163 * the doorbell interrupt. 3164 */ 3165 if (mvm->trans->trans_cfg->device_family <= IWL_DEVICE_FAMILY_22000 && 3166 fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_D0I3_END_FIRST)) { 3167 ret = iwl_mvm_send_cmd(mvm, &cmd); 3168 if (ret < 0) 3169 IWL_ERR(mvm, "Failed to send D0I3_END_CMD first (%d)\n", 3170 ret); 3171 } 3172 3173 return ret; 3174 } 3175 3176 #define IWL_MVM_D3_NOTIF_TIMEOUT (HZ / 5) 3177 3178 static int iwl_mvm_d3_notif_wait(struct iwl_mvm *mvm, 3179 struct iwl_d3_data *d3_data) 3180 { 3181 static const u16 d3_resume_notif[] = { 3182 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION), 3183 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION), 3184 WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF), 3185 WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION) 3186 }; 3187 struct iwl_notification_wait wait_d3_notif; 3188 int ret; 3189 3190 iwl_init_notification_wait(&mvm->notif_wait, &wait_d3_notif, 3191 d3_resume_notif, ARRAY_SIZE(d3_resume_notif), 3192 iwl_mvm_wait_d3_notif, d3_data); 3193 3194 ret = iwl_mvm_resume_firmware(mvm, d3_data->test); 3195 if (ret) { 3196 iwl_remove_notification(&mvm->notif_wait, &wait_d3_notif); 3197 return ret; 3198 } 3199 3200 return iwl_wait_notification(&mvm->notif_wait, &wait_d3_notif, 3201 IWL_MVM_D3_NOTIF_TIMEOUT); 3202 } 3203 3204 static inline bool iwl_mvm_d3_resume_notif_based(struct iwl_mvm *mvm) 3205 { 3206 return iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3207 WOWLAN_INFO_NOTIFICATION, 0) && 3208 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3209 WOWLAN_WAKE_PKT_NOTIFICATION, 0) && 3210 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3211 D3_END_NOTIFICATION, 0); 3212 } 3213 3214 static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test) 3215 { 3216 struct ieee80211_vif *vif = NULL; 3217 int ret = 1; 3218 struct iwl_mvm_nd_results results = {}; 3219 struct iwl_d3_data d3_data = { 3220 .test = test, 3221 .notif_expected = 3222 IWL_D3_NOTIF_WOWLAN_INFO | 3223 IWL_D3_NOTIF_D3_END_NOTIF, 3224 .nd_results_valid = false, 3225 .nd_results = &results, 3226 }; 3227 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 3228 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 3229 bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa, 3230 IWL_UCODE_TLV_CAPA_D0I3_END_FIRST); 3231 bool resume_notif_based = iwl_mvm_d3_resume_notif_based(mvm); 3232 bool keep = false; 3233 3234 mutex_lock(&mvm->mutex); 3235 3236 mvm->last_reset_or_resume_time_jiffies = jiffies; 3237 3238 /* get the BSS vif pointer again */ 3239 vif = iwl_mvm_get_bss_vif(mvm); 3240 if (IS_ERR_OR_NULL(vif)) 3241 goto err; 3242 3243 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt); 3244 3245 if (iwl_mvm_check_rt_status(mvm, vif)) { 3246 set_bit(STATUS_FW_ERROR, &mvm->trans->status); 3247 iwl_mvm_dump_nic_error_log(mvm); 3248 iwl_dbg_tlv_time_point(&mvm->fwrt, 3249 IWL_FW_INI_TIME_POINT_FW_ASSERT, NULL); 3250 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert, 3251 false, 0); 3252 ret = 1; 3253 goto err; 3254 } 3255 3256 if (resume_notif_based) { 3257 d3_data.status = kzalloc(sizeof(*d3_data.status), GFP_KERNEL); 3258 if (!d3_data.status) { 3259 IWL_ERR(mvm, "Failed to allocate wowlan status\n"); 3260 ret = -ENOMEM; 3261 goto err; 3262 } 3263 3264 ret = iwl_mvm_d3_notif_wait(mvm, &d3_data); 3265 if (ret) 3266 goto err; 3267 } else { 3268 ret = iwl_mvm_resume_firmware(mvm, test); 3269 if (ret < 0) 3270 goto err; 3271 } 3272 3273 /* after the successful handshake, we're out of D3 */ 3274 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED; 3275 3276 /* when reset is required we can't send these following commands */ 3277 if (d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE) 3278 goto query_wakeup_reasons; 3279 3280 /* 3281 * Query the current location and source from the D3 firmware so we 3282 * can play it back when we re-intiailize the D0 firmware 3283 */ 3284 iwl_mvm_update_changed_regdom(mvm); 3285 3286 /* Re-configure PPAG settings */ 3287 iwl_mvm_ppag_send_cmd(mvm); 3288 3289 if (!unified_image) 3290 /* Re-configure default SAR profile */ 3291 iwl_mvm_sar_select_profile(mvm, 1, 1); 3292 3293 if (mvm->net_detect && unified_image) { 3294 /* If this is a non-unified image, we restart the FW, 3295 * so no need to stop the netdetect scan. If that 3296 * fails, continue and try to get the wake-up reasons, 3297 * but trigger a HW restart by keeping a failure code 3298 * in ret. 3299 */ 3300 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT, 3301 false); 3302 } 3303 3304 query_wakeup_reasons: 3305 keep = iwl_mvm_choose_query_wakeup_reasons(mvm, vif, &d3_data); 3306 /* has unlocked the mutex, so skip that */ 3307 goto out; 3308 3309 err: 3310 mutex_unlock(&mvm->mutex); 3311 out: 3312 if (d3_data.status) 3313 kfree(d3_data.status->wake_packet); 3314 kfree(d3_data.status); 3315 iwl_mvm_free_nd(mvm); 3316 3317 if (!d3_data.test && !mvm->net_detect) 3318 ieee80211_iterate_active_interfaces_mtx(mvm->hw, 3319 IEEE80211_IFACE_ITER_NORMAL, 3320 iwl_mvm_d3_disconnect_iter, 3321 keep ? vif : NULL); 3322 3323 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 3324 3325 /* no need to reset the device in unified images, if successful */ 3326 if (unified_image && !ret) { 3327 /* nothing else to do if we already sent D0I3_END_CMD */ 3328 if (d0i3_first) 3329 return 0; 3330 3331 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3332 D3_END_NOTIFICATION, 0)) { 3333 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL); 3334 if (!ret) 3335 return 0; 3336 } else if (!(d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)) { 3337 return 0; 3338 } 3339 } 3340 3341 /* 3342 * Reconfigure the device in one of the following cases: 3343 * 1. We are not using a unified image 3344 * 2. We are using a unified image but had an error while exiting D3 3345 */ 3346 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); 3347 3348 /* regardless of what happened, we're now out of D3 */ 3349 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED; 3350 3351 return 1; 3352 } 3353 3354 int iwl_mvm_resume(struct ieee80211_hw *hw) 3355 { 3356 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3357 int ret; 3358 3359 ret = __iwl_mvm_resume(mvm, false); 3360 3361 iwl_mvm_resume_tcm(mvm); 3362 3363 iwl_fw_runtime_resume(&mvm->fwrt); 3364 3365 return ret; 3366 } 3367 3368 void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled) 3369 { 3370 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3371 3372 device_set_wakeup_enable(mvm->trans->dev, enabled); 3373 } 3374 3375 #ifdef CONFIG_IWLWIFI_DEBUGFS 3376 static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file) 3377 { 3378 struct iwl_mvm *mvm = inode->i_private; 3379 int err; 3380 3381 if (mvm->d3_test_active) 3382 return -EBUSY; 3383 3384 file->private_data = inode->i_private; 3385 3386 iwl_mvm_pause_tcm(mvm, true); 3387 3388 iwl_fw_runtime_suspend(&mvm->fwrt); 3389 3390 /* start pseudo D3 */ 3391 rtnl_lock(); 3392 wiphy_lock(mvm->hw->wiphy); 3393 err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true); 3394 wiphy_unlock(mvm->hw->wiphy); 3395 rtnl_unlock(); 3396 if (err > 0) 3397 err = -EINVAL; 3398 if (err) 3399 return err; 3400 3401 mvm->d3_test_active = true; 3402 mvm->keep_vif = NULL; 3403 return 0; 3404 } 3405 3406 static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf, 3407 size_t count, loff_t *ppos) 3408 { 3409 struct iwl_mvm *mvm = file->private_data; 3410 unsigned long end = jiffies + 60 * HZ; 3411 u32 pme_asserted; 3412 3413 while (true) { 3414 /* read pme_ptr if available */ 3415 if (mvm->d3_test_pme_ptr) { 3416 pme_asserted = iwl_trans_read_mem32(mvm->trans, 3417 mvm->d3_test_pme_ptr); 3418 if (pme_asserted) 3419 break; 3420 } 3421 3422 if (msleep_interruptible(100)) 3423 break; 3424 3425 if (time_is_before_jiffies(end)) { 3426 IWL_ERR(mvm, 3427 "ending pseudo-D3 with timeout after ~60 seconds\n"); 3428 return -ETIMEDOUT; 3429 } 3430 } 3431 3432 return 0; 3433 } 3434 3435 static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac, 3436 struct ieee80211_vif *vif) 3437 { 3438 /* skip the one we keep connection on */ 3439 if (_data == vif) 3440 return; 3441 3442 if (vif->type == NL80211_IFTYPE_STATION) 3443 ieee80211_connection_loss(vif); 3444 } 3445 3446 static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file) 3447 { 3448 struct iwl_mvm *mvm = inode->i_private; 3449 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 3450 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 3451 3452 mvm->d3_test_active = false; 3453 3454 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt); 3455 3456 rtnl_lock(); 3457 wiphy_lock(mvm->hw->wiphy); 3458 __iwl_mvm_resume(mvm, true); 3459 wiphy_unlock(mvm->hw->wiphy); 3460 rtnl_unlock(); 3461 3462 iwl_mvm_resume_tcm(mvm); 3463 3464 iwl_fw_runtime_resume(&mvm->fwrt); 3465 3466 iwl_abort_notification_waits(&mvm->notif_wait); 3467 if (!unified_image) { 3468 int remaining_time = 10; 3469 3470 ieee80211_restart_hw(mvm->hw); 3471 3472 /* wait for restart and disconnect all interfaces */ 3473 while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 3474 remaining_time > 0) { 3475 remaining_time--; 3476 msleep(1000); 3477 } 3478 3479 if (remaining_time == 0) 3480 IWL_ERR(mvm, "Timed out waiting for HW restart!\n"); 3481 } 3482 3483 ieee80211_iterate_active_interfaces_atomic( 3484 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 3485 iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif); 3486 3487 return 0; 3488 } 3489 3490 const struct file_operations iwl_dbgfs_d3_test_ops = { 3491 .llseek = no_llseek, 3492 .open = iwl_mvm_d3_test_open, 3493 .read = iwl_mvm_d3_test_read, 3494 .release = iwl_mvm_d3_test_release, 3495 }; 3496 #endif 3497