1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2014, 2018-2025 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 DEFINE_RAW_FLEX(struct iwl_mvm_wep_key_cmd, wkc, wep_key, 1); 124 struct iwl_mvm_wep_key *wep_key = wkc->wep_key; 125 126 wkc->mac_id_n_color = 127 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 128 mvmvif->color)); 129 wkc->num_keys = 1; 130 /* firmware sets STA_KEY_FLG_WEP_13BYTES */ 131 wkc->decryption_type = STA_KEY_FLG_WEP; 132 wep_key->key_index = key->keyidx; 133 wep_key->key_size = key->keylen; 134 135 /* 136 * This will fail -- the key functions don't set support 137 * pairwise WEP keys. However, that's better than silently 138 * failing WoWLAN. Or maybe not? 139 */ 140 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) 141 break; 142 143 memcpy(&wep_key->key[3], key->key, key->keylen); 144 if (key->keyidx == mvmvif->tx_key_idx) { 145 /* TX key must be at offset 0 */ 146 wep_key->key_offset = 0; 147 } else { 148 /* others start at 1 */ 149 data->wep_key_idx++; 150 wep_key->key_offset = data->wep_key_idx; 151 } 152 153 mutex_lock(&mvm->mutex); 154 ret = iwl_mvm_send_cmd_pdu(mvm, WEP_KEY, 0, 155 __struct_size(wkc), wkc); 156 data->error = ret != 0; 157 158 mvm->ptk_ivlen = key->iv_len; 159 mvm->ptk_icvlen = key->icv_len; 160 mvm->gtk_ivlen = key->iv_len; 161 mvm->gtk_icvlen = key->icv_len; 162 mutex_unlock(&mvm->mutex); 163 164 /* don't upload key again */ 165 return; 166 } 167 default: 168 data->error = true; 169 return; 170 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 171 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 172 return; 173 case WLAN_CIPHER_SUITE_AES_CMAC: 174 /* 175 * Ignore CMAC keys -- the WoWLAN firmware doesn't support them 176 * but we also shouldn't abort suspend due to that. It does have 177 * support for the IGTK key renewal, but doesn't really use the 178 * IGTK for anything. This means we could spuriously wake up or 179 * be deauthenticated, but that was considered acceptable. 180 */ 181 return; 182 case WLAN_CIPHER_SUITE_TKIP: 183 case WLAN_CIPHER_SUITE_CCMP: 184 case WLAN_CIPHER_SUITE_GCMP: 185 case WLAN_CIPHER_SUITE_GCMP_256: 186 break; 187 } 188 189 mutex_lock(&mvm->mutex); 190 /* 191 * The D3 firmware hardcodes the key offset 0 as the key it 192 * uses to transmit packets to the AP, i.e. the PTK. 193 */ 194 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) { 195 mvm->ptk_ivlen = key->iv_len; 196 mvm->ptk_icvlen = key->icv_len; 197 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 0); 198 } else { 199 /* 200 * firmware only supports TSC/RSC for a single key, 201 * so if there are multiple keep overwriting them 202 * with new ones -- this relies on mac80211 doing 203 * list_add_tail(). 204 */ 205 mvm->gtk_ivlen = key->iv_len; 206 mvm->gtk_icvlen = key->icv_len; 207 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 1); 208 } 209 mutex_unlock(&mvm->mutex); 210 data->error = ret != 0; 211 } 212 213 struct wowlan_key_rsc_tsc_data { 214 struct iwl_wowlan_rsc_tsc_params_cmd_ver_2 *rsc_tsc; 215 bool have_rsc_tsc; 216 }; 217 218 static void iwl_mvm_wowlan_get_rsc_tsc_data(struct ieee80211_hw *hw, 219 struct ieee80211_vif *vif, 220 struct ieee80211_sta *sta, 221 struct ieee80211_key_conf *key, 222 void *_data) 223 { 224 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 225 struct wowlan_key_rsc_tsc_data *data = _data; 226 struct aes_sc *aes_sc; 227 struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL; 228 struct ieee80211_key_seq seq; 229 int i; 230 231 switch (key->cipher) { 232 default: 233 break; 234 case WLAN_CIPHER_SUITE_TKIP: 235 if (sta) { 236 u64 pn64; 237 238 tkip_sc = 239 data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc; 240 tkip_tx_sc = 241 &data->rsc_tsc->all_tsc_rsc.tkip.tsc; 242 243 pn64 = atomic64_read(&key->tx_pn); 244 tkip_tx_sc->iv16 = cpu_to_le16(TKIP_PN_TO_IV16(pn64)); 245 tkip_tx_sc->iv32 = cpu_to_le32(TKIP_PN_TO_IV32(pn64)); 246 } else { 247 tkip_sc = 248 data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc; 249 } 250 251 /* 252 * For non-QoS this relies on the fact that both the uCode and 253 * mac80211 use TID 0 (as they need to avoid replay attacks) 254 * for checking the IV in the frames. 255 */ 256 for (i = 0; i < IWL_NUM_RSC; i++) { 257 ieee80211_get_key_rx_seq(key, i, &seq); 258 tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16); 259 tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32); 260 } 261 262 data->have_rsc_tsc = true; 263 break; 264 case WLAN_CIPHER_SUITE_CCMP: 265 case WLAN_CIPHER_SUITE_GCMP: 266 case WLAN_CIPHER_SUITE_GCMP_256: 267 if (sta) { 268 struct aes_sc *aes_tx_sc; 269 u64 pn64; 270 271 aes_sc = 272 data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc; 273 aes_tx_sc = 274 &data->rsc_tsc->all_tsc_rsc.aes.tsc; 275 276 pn64 = atomic64_read(&key->tx_pn); 277 aes_tx_sc->pn = cpu_to_le64(pn64); 278 } else { 279 aes_sc = 280 data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc; 281 } 282 283 /* 284 * For non-QoS this relies on the fact that both the uCode and 285 * mac80211/our RX code use TID 0 for checking the PN. 286 */ 287 if (sta && iwl_mvm_has_new_rx_api(mvm)) { 288 struct iwl_mvm_sta *mvmsta; 289 struct iwl_mvm_key_pn *ptk_pn; 290 const u8 *pn; 291 292 mvmsta = iwl_mvm_sta_from_mac80211(sta); 293 rcu_read_lock(); 294 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]); 295 if (WARN_ON(!ptk_pn)) { 296 rcu_read_unlock(); 297 break; 298 } 299 300 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 301 pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i, 302 mvm->trans->info.num_rxqs); 303 aes_sc[i].pn = cpu_to_le64((u64)pn[5] | 304 ((u64)pn[4] << 8) | 305 ((u64)pn[3] << 16) | 306 ((u64)pn[2] << 24) | 307 ((u64)pn[1] << 32) | 308 ((u64)pn[0] << 40)); 309 } 310 311 rcu_read_unlock(); 312 } else { 313 for (i = 0; i < IWL_NUM_RSC; i++) { 314 u8 *pn = seq.ccmp.pn; 315 316 ieee80211_get_key_rx_seq(key, i, &seq); 317 aes_sc[i].pn = cpu_to_le64((u64)pn[5] | 318 ((u64)pn[4] << 8) | 319 ((u64)pn[3] << 16) | 320 ((u64)pn[2] << 24) | 321 ((u64)pn[1] << 32) | 322 ((u64)pn[0] << 40)); 323 } 324 } 325 data->have_rsc_tsc = true; 326 break; 327 } 328 } 329 330 struct wowlan_key_rsc_v5_data { 331 struct iwl_wowlan_rsc_tsc_params_cmd *rsc; 332 bool have_rsc; 333 int gtks; 334 int gtk_ids[4]; 335 }; 336 337 static void iwl_mvm_wowlan_get_rsc_v5_data(struct ieee80211_hw *hw, 338 struct ieee80211_vif *vif, 339 struct ieee80211_sta *sta, 340 struct ieee80211_key_conf *key, 341 void *_data) 342 { 343 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 344 struct wowlan_key_rsc_v5_data *data = _data; 345 struct ieee80211_key_seq seq; 346 __le64 *rsc; 347 int i; 348 349 /* only for ciphers that can be PTK/GTK */ 350 switch (key->cipher) { 351 default: 352 return; 353 case WLAN_CIPHER_SUITE_TKIP: 354 case WLAN_CIPHER_SUITE_CCMP: 355 case WLAN_CIPHER_SUITE_GCMP: 356 case WLAN_CIPHER_SUITE_GCMP_256: 357 break; 358 } 359 360 if (sta) { 361 rsc = data->rsc->ucast_rsc; 362 } else { 363 if (WARN_ON(data->gtks >= ARRAY_SIZE(data->gtk_ids))) 364 return; 365 data->gtk_ids[data->gtks] = key->keyidx; 366 rsc = data->rsc->mcast_rsc[data->gtks % 2]; 367 if (WARN_ON(key->keyidx >= 368 ARRAY_SIZE(data->rsc->mcast_key_id_map))) 369 return; 370 data->rsc->mcast_key_id_map[key->keyidx] = data->gtks % 2; 371 if (data->gtks >= 2) { 372 int prev = data->gtks - 2; 373 int prev_idx = data->gtk_ids[prev]; 374 375 data->rsc->mcast_key_id_map[prev_idx] = 376 IWL_MCAST_KEY_MAP_INVALID; 377 } 378 data->gtks++; 379 } 380 381 switch (key->cipher) { 382 default: 383 WARN_ON(1); 384 break; 385 case WLAN_CIPHER_SUITE_TKIP: 386 387 /* 388 * For non-QoS this relies on the fact that both the uCode and 389 * mac80211 use TID 0 (as they need to avoid replay attacks) 390 * for checking the IV in the frames. 391 */ 392 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 393 ieee80211_get_key_rx_seq(key, i, &seq); 394 395 rsc[i] = cpu_to_le64(((u64)seq.tkip.iv32 << 16) | 396 seq.tkip.iv16); 397 } 398 399 data->have_rsc = true; 400 break; 401 case WLAN_CIPHER_SUITE_CCMP: 402 case WLAN_CIPHER_SUITE_GCMP: 403 case WLAN_CIPHER_SUITE_GCMP_256: 404 /* 405 * For non-QoS this relies on the fact that both the uCode and 406 * mac80211/our RX code use TID 0 for checking the PN. 407 */ 408 if (sta) { 409 struct iwl_mvm_sta *mvmsta; 410 struct iwl_mvm_key_pn *ptk_pn; 411 const u8 *pn; 412 413 mvmsta = iwl_mvm_sta_from_mac80211(sta); 414 rcu_read_lock(); 415 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]); 416 if (WARN_ON(!ptk_pn)) { 417 rcu_read_unlock(); 418 break; 419 } 420 421 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 422 pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i, 423 mvm->trans->info.num_rxqs); 424 rsc[i] = cpu_to_le64((u64)pn[5] | 425 ((u64)pn[4] << 8) | 426 ((u64)pn[3] << 16) | 427 ((u64)pn[2] << 24) | 428 ((u64)pn[1] << 32) | 429 ((u64)pn[0] << 40)); 430 } 431 432 rcu_read_unlock(); 433 } else { 434 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 435 u8 *pn = seq.ccmp.pn; 436 437 ieee80211_get_key_rx_seq(key, i, &seq); 438 rsc[i] = cpu_to_le64((u64)pn[5] | 439 ((u64)pn[4] << 8) | 440 ((u64)pn[3] << 16) | 441 ((u64)pn[2] << 24) | 442 ((u64)pn[1] << 32) | 443 ((u64)pn[0] << 40)); 444 } 445 } 446 data->have_rsc = true; 447 break; 448 } 449 } 450 451 static int iwl_mvm_wowlan_config_rsc_tsc(struct iwl_mvm *mvm, 452 struct ieee80211_vif *vif, 453 struct iwl_mvm_vif_link_info *mvm_link) 454 { 455 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TSC_RSC_PARAM, 456 IWL_FW_CMD_VER_UNKNOWN); 457 int ret; 458 459 if (ver == 5) { 460 struct wowlan_key_rsc_v5_data data = {}; 461 int i; 462 463 data.rsc = kzalloc(sizeof(*data.rsc), GFP_KERNEL); 464 if (!data.rsc) 465 return -ENOMEM; 466 467 for (i = 0; i < ARRAY_SIZE(data.rsc->mcast_key_id_map); i++) 468 data.rsc->mcast_key_id_map[i] = 469 IWL_MCAST_KEY_MAP_INVALID; 470 data.rsc->sta_id = cpu_to_le32(mvm_link->ap_sta_id); 471 472 ieee80211_iter_keys(mvm->hw, vif, 473 iwl_mvm_wowlan_get_rsc_v5_data, 474 &data); 475 476 if (data.have_rsc) 477 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM, 478 CMD_ASYNC, sizeof(*data.rsc), 479 data.rsc); 480 else 481 ret = 0; 482 kfree(data.rsc); 483 } else if (ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN) { 484 struct wowlan_key_rsc_tsc_data data = {}; 485 486 data.rsc_tsc = kzalloc(sizeof(*data.rsc_tsc), GFP_KERNEL); 487 if (!data.rsc_tsc) 488 return -ENOMEM; 489 490 ieee80211_iter_keys(mvm->hw, vif, 491 iwl_mvm_wowlan_get_rsc_tsc_data, 492 &data); 493 494 if (data.have_rsc_tsc) 495 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM, 496 CMD_ASYNC, 497 sizeof(*data.rsc_tsc), 498 data.rsc_tsc); 499 else 500 ret = 0; 501 kfree(data.rsc_tsc); 502 } else { 503 ret = 0; 504 WARN_ON_ONCE(1); 505 } 506 507 return ret; 508 } 509 510 struct wowlan_key_tkip_data { 511 struct iwl_wowlan_tkip_params_cmd tkip; 512 bool have_tkip_keys; 513 }; 514 515 static void iwl_mvm_wowlan_get_tkip_data(struct ieee80211_hw *hw, 516 struct ieee80211_vif *vif, 517 struct ieee80211_sta *sta, 518 struct ieee80211_key_conf *key, 519 void *_data) 520 { 521 struct wowlan_key_tkip_data *data = _data; 522 struct iwl_p1k_cache *rx_p1ks; 523 u8 *rx_mic_key; 524 struct ieee80211_key_seq seq; 525 u32 cur_rx_iv32 = 0; 526 u16 p1k[IWL_P1K_SIZE]; 527 int i; 528 529 switch (key->cipher) { 530 default: 531 break; 532 case WLAN_CIPHER_SUITE_TKIP: 533 if (sta) { 534 u64 pn64; 535 536 rx_p1ks = data->tkip.rx_uni; 537 538 pn64 = atomic64_read(&key->tx_pn); 539 540 ieee80211_get_tkip_p1k_iv(key, TKIP_PN_TO_IV32(pn64), 541 p1k); 542 iwl_mvm_convert_p1k(p1k, data->tkip.tx.p1k); 543 544 memcpy(data->tkip.mic_keys.tx, 545 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], 546 IWL_MIC_KEY_SIZE); 547 548 rx_mic_key = data->tkip.mic_keys.rx_unicast; 549 } else { 550 rx_p1ks = data->tkip.rx_multi; 551 rx_mic_key = data->tkip.mic_keys.rx_mcast; 552 } 553 554 for (i = 0; i < IWL_NUM_RSC; i++) { 555 ieee80211_get_key_rx_seq(key, i, &seq); 556 /* wrapping isn't allowed, AP must rekey */ 557 if (seq.tkip.iv32 > cur_rx_iv32) 558 cur_rx_iv32 = seq.tkip.iv32; 559 } 560 561 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid, 562 cur_rx_iv32, p1k); 563 iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k); 564 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid, 565 cur_rx_iv32 + 1, p1k); 566 iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k); 567 568 memcpy(rx_mic_key, 569 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], 570 IWL_MIC_KEY_SIZE); 571 572 data->have_tkip_keys = true; 573 break; 574 } 575 } 576 577 struct wowlan_key_gtk_type_iter { 578 struct iwl_wowlan_kek_kck_material_cmd_v4 *kek_kck_cmd; 579 }; 580 581 static void iwl_mvm_wowlan_gtk_type_iter(struct ieee80211_hw *hw, 582 struct ieee80211_vif *vif, 583 struct ieee80211_sta *sta, 584 struct ieee80211_key_conf *key, 585 void *_data) 586 { 587 struct wowlan_key_gtk_type_iter *data = _data; 588 __le32 *cipher = NULL; 589 590 if (key->keyidx == 4 || key->keyidx == 5) 591 cipher = &data->kek_kck_cmd->igtk_cipher; 592 if (key->keyidx == 6 || key->keyidx == 7) 593 cipher = &data->kek_kck_cmd->bigtk_cipher; 594 595 switch (key->cipher) { 596 default: 597 return; 598 case WLAN_CIPHER_SUITE_TKIP: 599 if (!sta) 600 data->kek_kck_cmd->gtk_cipher = 601 cpu_to_le32(STA_KEY_FLG_TKIP); 602 return; 603 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 604 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 605 if (cipher) 606 *cipher = cpu_to_le32(STA_KEY_FLG_GCMP); 607 return; 608 case WLAN_CIPHER_SUITE_AES_CMAC: 609 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 610 if (cipher) 611 *cipher = cpu_to_le32(STA_KEY_FLG_CCM); 612 return; 613 case WLAN_CIPHER_SUITE_CCMP: 614 if (!sta) 615 data->kek_kck_cmd->gtk_cipher = 616 cpu_to_le32(STA_KEY_FLG_CCM); 617 return; 618 case WLAN_CIPHER_SUITE_GCMP: 619 case WLAN_CIPHER_SUITE_GCMP_256: 620 if (!sta) 621 data->kek_kck_cmd->gtk_cipher = 622 cpu_to_le32(STA_KEY_FLG_GCMP); 623 return; 624 } 625 } 626 627 static int iwl_mvm_send_patterns_v1(struct iwl_mvm *mvm, 628 struct cfg80211_wowlan *wowlan) 629 { 630 struct iwl_wowlan_patterns_cmd_v1 *pattern_cmd; 631 struct iwl_host_cmd cmd = { 632 .id = WOWLAN_PATTERNS, 633 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 634 }; 635 int i, err; 636 637 if (!wowlan->n_patterns) 638 return 0; 639 640 cmd.len[0] = struct_size(pattern_cmd, patterns, wowlan->n_patterns); 641 642 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL); 643 if (!pattern_cmd) 644 return -ENOMEM; 645 646 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns); 647 648 for (i = 0; i < wowlan->n_patterns; i++) { 649 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8); 650 651 memcpy(&pattern_cmd->patterns[i].mask, 652 wowlan->patterns[i].mask, mask_len); 653 memcpy(&pattern_cmd->patterns[i].pattern, 654 wowlan->patterns[i].pattern, 655 wowlan->patterns[i].pattern_len); 656 pattern_cmd->patterns[i].mask_size = mask_len; 657 pattern_cmd->patterns[i].pattern_size = 658 wowlan->patterns[i].pattern_len; 659 } 660 661 cmd.data[0] = pattern_cmd; 662 err = iwl_mvm_send_cmd(mvm, &cmd); 663 kfree(pattern_cmd); 664 return err; 665 } 666 667 static int iwl_mvm_send_patterns(struct iwl_mvm *mvm, 668 struct iwl_mvm_vif_link_info *mvm_link, 669 struct cfg80211_wowlan *wowlan) 670 { 671 struct iwl_wowlan_patterns_cmd *pattern_cmd; 672 struct iwl_host_cmd cmd = { 673 .id = WOWLAN_PATTERNS, 674 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 675 }; 676 int i, err; 677 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id, 678 IWL_FW_CMD_VER_UNKNOWN); 679 680 if (!wowlan->n_patterns) 681 return 0; 682 683 cmd.len[0] = sizeof(*pattern_cmd) + 684 wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern_v2); 685 686 pattern_cmd = kzalloc(cmd.len[0], GFP_KERNEL); 687 if (!pattern_cmd) 688 return -ENOMEM; 689 690 pattern_cmd->n_patterns = wowlan->n_patterns; 691 if (ver >= 3) 692 pattern_cmd->sta_id = mvm_link->ap_sta_id; 693 694 for (i = 0; i < wowlan->n_patterns; i++) { 695 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8); 696 697 pattern_cmd->patterns[i].pattern_type = 698 WOWLAN_PATTERN_TYPE_BITMASK; 699 700 memcpy(&pattern_cmd->patterns[i].u.bitmask.mask, 701 wowlan->patterns[i].mask, mask_len); 702 memcpy(&pattern_cmd->patterns[i].u.bitmask.pattern, 703 wowlan->patterns[i].pattern, 704 wowlan->patterns[i].pattern_len); 705 pattern_cmd->patterns[i].u.bitmask.mask_size = mask_len; 706 pattern_cmd->patterns[i].u.bitmask.pattern_size = 707 wowlan->patterns[i].pattern_len; 708 } 709 710 cmd.data[0] = pattern_cmd; 711 err = iwl_mvm_send_cmd(mvm, &cmd); 712 kfree(pattern_cmd); 713 return err; 714 } 715 716 static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 717 struct ieee80211_sta *ap_sta) 718 { 719 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 720 struct ieee80211_chanctx_conf *ctx; 721 u8 chains_static, chains_dynamic; 722 struct cfg80211_chan_def chandef, ap_def; 723 int ret, i; 724 struct iwl_binding_cmd_v1 binding_cmd = {}; 725 struct iwl_time_quota_cmd quota_cmd = {}; 726 struct iwl_time_quota_data *quota; 727 u32 status; 728 729 if (WARN_ON_ONCE(iwl_mvm_is_cdb_supported(mvm) || 730 ieee80211_vif_is_mld(vif))) 731 return -EINVAL; 732 733 /* add back the PHY */ 734 if (WARN_ON(!mvmvif->deflink.phy_ctxt)) 735 return -EINVAL; 736 737 rcu_read_lock(); 738 ctx = rcu_dereference(vif->bss_conf.chanctx_conf); 739 if (WARN_ON(!ctx)) { 740 rcu_read_unlock(); 741 return -EINVAL; 742 } 743 chandef = ctx->def; 744 ap_def = ctx->ap; 745 chains_static = ctx->rx_chains_static; 746 chains_dynamic = ctx->rx_chains_dynamic; 747 rcu_read_unlock(); 748 749 ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->deflink.phy_ctxt, &chandef, 750 &ap_def, chains_static, chains_dynamic); 751 if (ret) 752 return ret; 753 754 /* add back the MAC */ 755 mvmvif->uploaded = false; 756 757 if (WARN_ON(!vif->cfg.assoc)) 758 return -EINVAL; 759 760 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 761 if (ret) 762 return ret; 763 764 /* add back binding - XXX refactor? */ 765 binding_cmd.id_and_color = 766 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id, 767 mvmvif->deflink.phy_ctxt->color)); 768 binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD); 769 binding_cmd.phy = 770 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id, 771 mvmvif->deflink.phy_ctxt->color)); 772 binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 773 mvmvif->color)); 774 for (i = 1; i < MAX_MACS_IN_BINDING; i++) 775 binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID); 776 777 status = 0; 778 ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD, 779 IWL_BINDING_CMD_SIZE_V1, &binding_cmd, 780 &status); 781 if (ret) { 782 IWL_ERR(mvm, "Failed to add binding: %d\n", ret); 783 return ret; 784 } 785 786 if (status) { 787 IWL_ERR(mvm, "Binding command failed: %u\n", status); 788 return -EIO; 789 } 790 791 ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false, 0); 792 if (ret) 793 return ret; 794 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->deflink.ap_sta_id], 795 ap_sta); 796 797 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 798 if (ret) 799 return ret; 800 801 /* and some quota */ 802 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, 0); 803 quota->id_and_color = 804 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id, 805 mvmvif->deflink.phy_ctxt->color)); 806 quota->quota = cpu_to_le32(IWL_MVM_MAX_QUOTA); 807 quota->max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA); 808 809 for (i = 1; i < MAX_BINDINGS; i++) { 810 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, i); 811 quota->id_and_color = cpu_to_le32(FW_CTXT_INVALID); 812 } 813 814 ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0, 815 iwl_mvm_quota_cmd_size(mvm), "a_cmd); 816 if (ret) 817 IWL_ERR(mvm, "Failed to send quota: %d\n", ret); 818 819 if (iwl_mvm_is_lar_supported(mvm) && iwl_mvm_init_fw_regd(mvm, false)) 820 IWL_ERR(mvm, "Failed to initialize D3 LAR information\n"); 821 822 return 0; 823 } 824 825 static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm, 826 struct ieee80211_vif *vif) 827 { 828 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 829 struct iwl_nonqos_seq_query_cmd query_cmd = { 830 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET), 831 .mac_id_n_color = 832 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 833 mvmvif->color)), 834 }; 835 struct iwl_host_cmd cmd = { 836 .id = NON_QOS_TX_COUNTER_CMD, 837 .flags = CMD_WANT_SKB, 838 }; 839 int err; 840 u32 size; 841 842 cmd.data[0] = &query_cmd; 843 cmd.len[0] = sizeof(query_cmd); 844 845 err = iwl_mvm_send_cmd(mvm, &cmd); 846 if (err) 847 return err; 848 849 size = iwl_rx_packet_payload_len(cmd.resp_pkt); 850 if (size < sizeof(__le16)) { 851 err = -EINVAL; 852 } else { 853 err = le16_to_cpup((__le16 *)cmd.resp_pkt->data); 854 /* firmware returns next, not last-used seqno */ 855 err = (u16) (err - 0x10); 856 } 857 858 iwl_free_resp(&cmd); 859 return err; 860 } 861 862 void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 863 { 864 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 865 struct iwl_nonqos_seq_query_cmd query_cmd = { 866 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET), 867 .mac_id_n_color = 868 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 869 mvmvif->color)), 870 .value = cpu_to_le16(mvmvif->seqno), 871 }; 872 873 /* return if called during restart, not resume from D3 */ 874 if (!mvmvif->seqno_valid) 875 return; 876 877 mvmvif->seqno_valid = false; 878 879 if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0, 880 sizeof(query_cmd), &query_cmd)) 881 IWL_ERR(mvm, "failed to set non-QoS seqno\n"); 882 } 883 884 static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm) 885 { 886 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 887 888 iwl_mvm_stop_device(mvm); 889 /* 890 * Set the HW restart bit -- this is mostly true as we're 891 * going to load new firmware and reprogram that, though 892 * the reprogramming is going to be manual to avoid adding 893 * all the MACs that aren't support. 894 * We don't have to clear up everything though because the 895 * reprogramming is manual. When we resume, we'll actually 896 * go through a proper restart sequence again to switch 897 * back to the runtime firmware image. 898 */ 899 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 900 901 /* the fw is reset, so all the keys are cleared */ 902 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); 903 904 mvm->ptk_ivlen = 0; 905 mvm->ptk_icvlen = 0; 906 mvm->ptk_ivlen = 0; 907 mvm->ptk_icvlen = 0; 908 909 return iwl_mvm_load_d3_fw(mvm); 910 } 911 912 static int 913 iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm, 914 struct cfg80211_wowlan *wowlan, 915 struct iwl_wowlan_config_cmd_v6 *wowlan_config_cmd, 916 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif, 917 struct ieee80211_sta *ap_sta) 918 { 919 struct iwl_mvm_sta *mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta); 920 921 /* TODO: wowlan_config_cmd->wowlan_ba_teardown_tids */ 922 923 wowlan_config_cmd->is_11n_connection = 924 ap_sta->deflink.ht_cap.ht_supported; 925 wowlan_config_cmd->flags = ENABLE_L3_FILTERING | 926 ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING; 927 928 if (ap_sta->mfp) 929 wowlan_config_cmd->flags |= IS_11W_ASSOC; 930 931 if (iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_CONFIGURATION, 0) < 6) { 932 /* Query the last used seqno and set it */ 933 int ret = iwl_mvm_get_last_nonqos_seq(mvm, vif); 934 935 if (ret < 0) 936 return ret; 937 938 wowlan_config_cmd->non_qos_seq = cpu_to_le16(ret); 939 } 940 941 if (iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_CONFIGURATION, 0) < 7) 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_v6 *wowlan_config_cmd_v6, 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_v6->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 if (iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_CONFIGURATION, 0) > 6) { 1142 struct iwl_wowlan_config_cmd wowlan_config_cmd = { 1143 .wakeup_filter = wowlan_config_cmd_v6->wakeup_filter, 1144 .wowlan_ba_teardown_tids = 1145 wowlan_config_cmd_v6->wowlan_ba_teardown_tids, 1146 .is_11n_connection = 1147 wowlan_config_cmd_v6->is_11n_connection, 1148 .offloading_tid = wowlan_config_cmd_v6->offloading_tid, 1149 .flags = wowlan_config_cmd_v6->flags, 1150 .sta_id = wowlan_config_cmd_v6->sta_id, 1151 }; 1152 1153 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0, 1154 sizeof(wowlan_config_cmd), 1155 &wowlan_config_cmd); 1156 } else { 1157 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0, 1158 sizeof(*wowlan_config_cmd_v6), 1159 wowlan_config_cmd_v6); 1160 } 1161 if (ret) 1162 return ret; 1163 1164 if (fw_has_api(&mvm->fw->ucode_capa, 1165 IWL_UCODE_TLV_API_WOWLAN_TCP_SYN_WAKE)) 1166 ret = iwl_mvm_send_patterns(mvm, mvm_link, wowlan); 1167 else 1168 ret = iwl_mvm_send_patterns_v1(mvm, wowlan); 1169 if (ret) 1170 return ret; 1171 1172 return iwl_mvm_send_proto_offload(mvm, vif, false, true, 0, 1173 mvm_link->ap_sta_id); 1174 } 1175 1176 static int 1177 iwl_mvm_netdetect_config(struct iwl_mvm *mvm, 1178 struct cfg80211_wowlan *wowlan, 1179 struct cfg80211_sched_scan_request *nd_config, 1180 struct ieee80211_vif *vif) 1181 { 1182 int ret; 1183 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 1184 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1185 1186 if (!unified_image) { 1187 ret = iwl_mvm_switch_to_d3(mvm); 1188 if (ret) 1189 return ret; 1190 } else { 1191 /* In theory, we wouldn't have to stop a running sched 1192 * scan in order to start another one (for 1193 * net-detect). But in practice this doesn't seem to 1194 * work properly, so stop any running sched_scan now. 1195 */ 1196 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 1197 if (ret) 1198 return ret; 1199 } 1200 1201 ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies, 1202 IWL_MVM_SCAN_NETDETECT); 1203 if (ret) 1204 return ret; 1205 1206 if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels)) 1207 return -EBUSY; 1208 1209 /* save the sched scan matchsets... */ 1210 if (nd_config->n_match_sets) { 1211 mvm->nd_match_sets = kmemdup(nd_config->match_sets, 1212 sizeof(*nd_config->match_sets) * 1213 nd_config->n_match_sets, 1214 GFP_KERNEL); 1215 if (mvm->nd_match_sets) 1216 mvm->n_nd_match_sets = nd_config->n_match_sets; 1217 } 1218 1219 /* ...and the sched scan channels for later reporting */ 1220 mvm->nd_channels = kmemdup(nd_config->channels, 1221 sizeof(*nd_config->channels) * 1222 nd_config->n_channels, 1223 GFP_KERNEL); 1224 if (mvm->nd_channels) 1225 mvm->n_nd_channels = nd_config->n_channels; 1226 1227 return 0; 1228 } 1229 1230 static void iwl_mvm_free_nd(struct iwl_mvm *mvm) 1231 { 1232 kfree(mvm->nd_match_sets); 1233 mvm->nd_match_sets = NULL; 1234 mvm->n_nd_match_sets = 0; 1235 kfree(mvm->nd_channels); 1236 mvm->nd_channels = NULL; 1237 mvm->n_nd_channels = 0; 1238 } 1239 1240 static int __iwl_mvm_suspend(struct ieee80211_hw *hw, 1241 struct cfg80211_wowlan *wowlan, 1242 bool test) 1243 { 1244 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1245 struct ieee80211_vif *vif = NULL; 1246 struct iwl_mvm_vif *mvmvif = NULL; 1247 struct ieee80211_sta *ap_sta = NULL; 1248 struct iwl_mvm_vif_link_info *mvm_link; 1249 struct iwl_d3_manager_config d3_cfg_cmd_data = { 1250 /* 1251 * Program the minimum sleep time to 10 seconds, as many 1252 * platforms have issues processing a wakeup signal while 1253 * still being in the process of suspending. 1254 */ 1255 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000), 1256 }; 1257 struct iwl_host_cmd d3_cfg_cmd = { 1258 .id = D3_CONFIG_CMD, 1259 .flags = CMD_WANT_SKB, 1260 .data[0] = &d3_cfg_cmd_data, 1261 .len[0] = sizeof(d3_cfg_cmd_data), 1262 }; 1263 int ret; 1264 int len __maybe_unused; 1265 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 1266 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1267 1268 if (!wowlan) { 1269 /* 1270 * mac80211 shouldn't get here, but for D3 test 1271 * it doesn't warrant a warning 1272 */ 1273 WARN_ON(!test); 1274 return -EINVAL; 1275 } 1276 1277 vif = iwl_mvm_get_bss_vif(mvm); 1278 if (IS_ERR_OR_NULL(vif)) 1279 return 1; 1280 1281 ret = iwl_mvm_block_esr_sync(mvm, vif, IWL_MVM_ESR_BLOCKED_WOWLAN); 1282 if (ret) 1283 return ret; 1284 1285 mutex_lock(&mvm->mutex); 1286 1287 set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 1288 1289 synchronize_net(); 1290 1291 mvmvif = iwl_mvm_vif_from_mac80211(vif); 1292 1293 mvm_link = mvmvif->link[iwl_mvm_get_primary_link(vif)]; 1294 if (WARN_ON_ONCE(!mvm_link)) { 1295 ret = -EINVAL; 1296 goto out_noreset; 1297 } 1298 1299 if (mvm_link->ap_sta_id == IWL_INVALID_STA) { 1300 /* if we're not associated, this must be netdetect */ 1301 if (!wowlan->nd_config) { 1302 ret = 1; 1303 goto out_noreset; 1304 } 1305 1306 ret = iwl_mvm_netdetect_config( 1307 mvm, wowlan, wowlan->nd_config, vif); 1308 if (ret) 1309 goto out; 1310 1311 mvm->net_detect = true; 1312 } else { 1313 struct iwl_wowlan_config_cmd_v6 wowlan_config_cmd = { 1314 .offloading_tid = 0, 1315 }; 1316 1317 wowlan_config_cmd.sta_id = mvm_link->ap_sta_id; 1318 1319 ap_sta = rcu_dereference_protected( 1320 mvm->fw_id_to_mac_id[mvm_link->ap_sta_id], 1321 lockdep_is_held(&mvm->mutex)); 1322 if (IS_ERR_OR_NULL(ap_sta)) { 1323 ret = -EINVAL; 1324 goto out_noreset; 1325 } 1326 1327 ret = iwl_mvm_sta_ensure_queue( 1328 mvm, ap_sta->txq[wowlan_config_cmd.offloading_tid]); 1329 if (ret) 1330 goto out_noreset; 1331 1332 ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd, 1333 vif, mvmvif, ap_sta); 1334 if (ret) 1335 goto out_noreset; 1336 ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd, 1337 vif, mvmvif, mvm_link, ap_sta); 1338 if (ret) 1339 goto out; 1340 1341 mvm->net_detect = false; 1342 } 1343 1344 ret = iwl_mvm_power_update_device(mvm); 1345 if (ret) 1346 goto out; 1347 1348 ret = iwl_mvm_power_update_mac(mvm); 1349 if (ret) 1350 goto out; 1351 1352 #ifdef CONFIG_IWLWIFI_DEBUGFS 1353 if (mvm->d3_wake_sysassert) 1354 d3_cfg_cmd_data.wakeup_flags |= 1355 cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR); 1356 #endif 1357 1358 /* 1359 * Prior to 9000 device family the driver needs to stop the dbg 1360 * recording before entering D3. In later devices the FW stops the 1361 * recording automatically. 1362 */ 1363 if (mvm->trans->mac_cfg->device_family < IWL_DEVICE_FAMILY_9000) 1364 iwl_fw_dbg_stop_restart_recording(&mvm->fwrt, NULL, true); 1365 1366 /* must be last -- this switches firmware state */ 1367 ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd); 1368 if (ret) 1369 goto out; 1370 #ifdef CONFIG_IWLWIFI_DEBUGFS 1371 len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt); 1372 if (len >= sizeof(u32)) { 1373 mvm->d3_test_pme_ptr = 1374 le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data); 1375 } 1376 #endif 1377 iwl_free_resp(&d3_cfg_cmd); 1378 1379 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1380 1381 ret = iwl_trans_d3_suspend(mvm->trans, test, !unified_image); 1382 out: 1383 if (ret < 0) { 1384 iwl_mvm_free_nd(mvm); 1385 1386 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 1387 } 1388 out_noreset: 1389 mutex_unlock(&mvm->mutex); 1390 1391 return ret; 1392 } 1393 1394 int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) 1395 { 1396 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1397 1398 iwl_mvm_pause_tcm(mvm, true); 1399 1400 mutex_lock(&mvm->mutex); 1401 iwl_fw_runtime_suspend(&mvm->fwrt); 1402 mutex_unlock(&mvm->mutex); 1403 1404 return __iwl_mvm_suspend(hw, wowlan, false); 1405 } 1406 1407 struct iwl_multicast_key_data { 1408 u8 key[WOWLAN_KEY_MAX_SIZE]; 1409 u8 len; 1410 u8 flags; 1411 u8 id; 1412 u8 ipn[6]; 1413 }; 1414 1415 /* converted data from the different status responses */ 1416 struct iwl_wowlan_status_data { 1417 u64 replay_ctr; 1418 u32 num_of_gtk_rekeys; 1419 u32 received_beacons; 1420 u32 wakeup_reasons; 1421 u32 wake_packet_length; 1422 u32 wake_packet_bufsize; 1423 u16 pattern_number; 1424 u16 non_qos_seq_ctr; 1425 u16 qos_seq_ctr[8]; 1426 u8 tid_tear_down; 1427 u8 tid_offloaded_tx; 1428 1429 struct { 1430 /* including RX MIC key for TKIP */ 1431 u8 key[WOWLAN_KEY_MAX_SIZE]; 1432 u8 len; 1433 u8 flags; 1434 u8 id; 1435 } gtk[WOWLAN_GTK_KEYS_NUM]; 1436 1437 struct { 1438 /* 1439 * We store both the TKIP and AES representations 1440 * coming from the firmware because we decode the 1441 * data from there before we iterate the keys and 1442 * know which one we need. 1443 */ 1444 struct { 1445 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT]; 1446 } tkip, aes; 1447 1448 /* 1449 * We use -1 for when we have valid data but don't know 1450 * the key ID from firmware, and thus it needs to be 1451 * installed with the last key (depending on rekeying). 1452 */ 1453 s8 key_id; 1454 bool valid; 1455 } gtk_seq[2]; 1456 1457 struct { 1458 /* Same as above */ 1459 struct { 1460 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT]; 1461 u64 tx_pn; 1462 } tkip, aes; 1463 } ptk; 1464 1465 struct iwl_multicast_key_data igtk; 1466 struct iwl_multicast_key_data bigtk[WOWLAN_BIGTK_KEYS_NUM]; 1467 1468 u8 *wake_packet; 1469 }; 1470 1471 static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm, 1472 struct ieee80211_vif *vif, 1473 struct iwl_wowlan_status_data *status) 1474 { 1475 struct sk_buff *pkt = NULL; 1476 struct cfg80211_wowlan_wakeup wakeup = { 1477 .pattern_idx = -1, 1478 }; 1479 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; 1480 u32 reasons = status->wakeup_reasons; 1481 1482 if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) { 1483 wakeup_report = NULL; 1484 goto report; 1485 } 1486 1487 pm_wakeup_event(mvm->dev, 0); 1488 1489 if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET) 1490 wakeup.magic_pkt = true; 1491 1492 if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN) 1493 wakeup.pattern_idx = 1494 status->pattern_number; 1495 1496 if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 1497 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH | 1498 IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)) 1499 wakeup.disconnect = true; 1500 1501 if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE) 1502 wakeup.gtk_rekey_failure = true; 1503 1504 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 1505 wakeup.rfkill_release = true; 1506 1507 if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST) 1508 wakeup.eap_identity_req = true; 1509 1510 if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE) 1511 wakeup.four_way_handshake = true; 1512 1513 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS) 1514 wakeup.tcp_connlost = true; 1515 1516 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE) 1517 wakeup.tcp_nomoretokens = true; 1518 1519 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET) 1520 wakeup.tcp_match = true; 1521 1522 if (reasons & IWL_WAKEUP_BY_11W_UNPROTECTED_DEAUTH_OR_DISASSOC) 1523 wakeup.unprot_deauth_disassoc = true; 1524 1525 if (status->wake_packet) { 1526 int pktsize = status->wake_packet_bufsize; 1527 int pktlen = status->wake_packet_length; 1528 const u8 *pktdata = status->wake_packet; 1529 const struct ieee80211_hdr *hdr = (const void *)pktdata; 1530 int truncated = pktlen - pktsize; 1531 1532 /* this would be a firmware bug */ 1533 if (WARN_ON_ONCE(truncated < 0)) 1534 truncated = 0; 1535 1536 if (ieee80211_is_data(hdr->frame_control)) { 1537 int hdrlen = ieee80211_hdrlen(hdr->frame_control); 1538 int ivlen = 0, icvlen = 4; /* also FCS */ 1539 1540 pkt = alloc_skb(pktsize, GFP_KERNEL); 1541 if (!pkt) 1542 goto report; 1543 1544 skb_put_data(pkt, pktdata, hdrlen); 1545 pktdata += hdrlen; 1546 pktsize -= hdrlen; 1547 1548 if (ieee80211_has_protected(hdr->frame_control)) { 1549 /* 1550 * This is unlocked and using gtk_i(c)vlen, 1551 * but since everything is under RTNL still 1552 * that's not really a problem - changing 1553 * it would be difficult. 1554 */ 1555 if (is_multicast_ether_addr(hdr->addr1)) { 1556 ivlen = mvm->gtk_ivlen; 1557 icvlen += mvm->gtk_icvlen; 1558 } else { 1559 ivlen = mvm->ptk_ivlen; 1560 icvlen += mvm->ptk_icvlen; 1561 } 1562 } 1563 1564 /* if truncated, FCS/ICV is (partially) gone */ 1565 if (truncated >= icvlen) { 1566 icvlen = 0; 1567 truncated -= icvlen; 1568 } else { 1569 icvlen -= truncated; 1570 truncated = 0; 1571 } 1572 1573 pktsize -= ivlen + icvlen; 1574 pktdata += ivlen; 1575 1576 skb_put_data(pkt, pktdata, pktsize); 1577 1578 if (ieee80211_data_to_8023(pkt, vif->addr, vif->type)) 1579 goto report; 1580 wakeup.packet = pkt->data; 1581 wakeup.packet_present_len = pkt->len; 1582 wakeup.packet_len = pkt->len - truncated; 1583 wakeup.packet_80211 = false; 1584 } else { 1585 int fcslen = 4; 1586 1587 if (truncated >= 4) { 1588 truncated -= 4; 1589 fcslen = 0; 1590 } else { 1591 fcslen -= truncated; 1592 truncated = 0; 1593 } 1594 pktsize -= fcslen; 1595 wakeup.packet = status->wake_packet; 1596 wakeup.packet_present_len = pktsize; 1597 wakeup.packet_len = pktlen - truncated; 1598 wakeup.packet_80211 = true; 1599 } 1600 } 1601 1602 report: 1603 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); 1604 kfree_skb(pkt); 1605 } 1606 1607 static void iwl_mvm_le64_to_aes_seq(__le64 le_pn, struct ieee80211_key_seq *seq) 1608 { 1609 u64 pn = le64_to_cpu(le_pn); 1610 1611 seq->ccmp.pn[0] = pn >> 40; 1612 seq->ccmp.pn[1] = pn >> 32; 1613 seq->ccmp.pn[2] = pn >> 24; 1614 seq->ccmp.pn[3] = pn >> 16; 1615 seq->ccmp.pn[4] = pn >> 8; 1616 seq->ccmp.pn[5] = pn; 1617 } 1618 1619 static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc, 1620 struct ieee80211_key_seq *seq) 1621 { 1622 iwl_mvm_le64_to_aes_seq(sc->pn, seq); 1623 } 1624 1625 static void iwl_mvm_le64_to_tkip_seq(__le64 le_pn, struct ieee80211_key_seq *seq) 1626 { 1627 u64 pn = le64_to_cpu(le_pn); 1628 1629 seq->tkip.iv16 = (u16)pn; 1630 seq->tkip.iv32 = (u32)(pn >> 16); 1631 } 1632 1633 static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc, 1634 struct ieee80211_key_seq *seq) 1635 { 1636 seq->tkip.iv32 = le32_to_cpu(sc->iv32); 1637 seq->tkip.iv16 = le16_to_cpu(sc->iv16); 1638 } 1639 1640 static void iwl_mvm_set_key_rx_seq_tids(struct ieee80211_key_conf *key, 1641 struct ieee80211_key_seq *seq) 1642 { 1643 int tid; 1644 1645 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) 1646 ieee80211_set_key_rx_seq(key, tid, &seq[tid]); 1647 } 1648 1649 static void iwl_mvm_set_aes_ptk_rx_seq(struct iwl_mvm *mvm, 1650 struct iwl_wowlan_status_data *status, 1651 struct ieee80211_sta *sta, 1652 struct ieee80211_key_conf *key) 1653 { 1654 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1655 struct iwl_mvm_key_pn *ptk_pn; 1656 int tid; 1657 1658 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.aes.seq); 1659 1660 if (!iwl_mvm_has_new_rx_api(mvm)) 1661 return; 1662 1663 1664 rcu_read_lock(); 1665 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]); 1666 if (WARN_ON(!ptk_pn)) { 1667 rcu_read_unlock(); 1668 return; 1669 } 1670 1671 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1672 int i; 1673 1674 for (i = 1; i < mvm->trans->info.num_rxqs; i++) 1675 memcpy(ptk_pn->q[i].pn[tid], 1676 status->ptk.aes.seq[tid].ccmp.pn, 1677 IEEE80211_CCMP_PN_LEN); 1678 } 1679 rcu_read_unlock(); 1680 } 1681 1682 static void iwl_mvm_convert_key_counters(struct iwl_wowlan_status_data *status, 1683 union iwl_all_tsc_rsc *sc, u8 key_idx) 1684 { 1685 int i; 1686 1687 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT); 1688 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC); 1689 1690 /* GTK RX counters */ 1691 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1692 iwl_mvm_tkip_sc_to_seq(&sc->tkip.multicast_rsc[i], 1693 &status->gtk_seq[0].tkip.seq[i]); 1694 iwl_mvm_aes_sc_to_seq(&sc->aes.multicast_rsc[i], 1695 &status->gtk_seq[0].aes.seq[i]); 1696 } 1697 status->gtk_seq[0].valid = true; 1698 status->gtk_seq[0].key_id = key_idx; 1699 1700 /* PTK TX counter */ 1701 status->ptk.tkip.tx_pn = (u64)le16_to_cpu(sc->tkip.tsc.iv16) | 1702 ((u64)le32_to_cpu(sc->tkip.tsc.iv32) << 16); 1703 status->ptk.aes.tx_pn = le64_to_cpu(sc->aes.tsc.pn); 1704 1705 /* PTK RX counters */ 1706 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1707 iwl_mvm_tkip_sc_to_seq(&sc->tkip.unicast_rsc[i], 1708 &status->ptk.tkip.seq[i]); 1709 iwl_mvm_aes_sc_to_seq(&sc->aes.unicast_rsc[i], 1710 &status->ptk.aes.seq[i]); 1711 } 1712 } 1713 1714 static void 1715 iwl_mvm_convert_key_counters_v5_gtk_seq(struct iwl_wowlan_status_data *status, 1716 struct iwl_wowlan_all_rsc_tsc_v5 *sc, 1717 unsigned int idx, unsigned int key_id) 1718 { 1719 int tid; 1720 1721 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1722 iwl_mvm_le64_to_tkip_seq(sc->mcast_rsc[idx][tid], 1723 &status->gtk_seq[idx].tkip.seq[tid]); 1724 iwl_mvm_le64_to_aes_seq(sc->mcast_rsc[idx][tid], 1725 &status->gtk_seq[idx].aes.seq[tid]); 1726 } 1727 1728 status->gtk_seq[idx].valid = true; 1729 status->gtk_seq[idx].key_id = key_id; 1730 } 1731 1732 static void 1733 iwl_mvm_convert_key_counters_v5(struct iwl_wowlan_status_data *status, 1734 struct iwl_wowlan_all_rsc_tsc_v5 *sc) 1735 { 1736 int i, tid; 1737 1738 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT); 1739 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC); 1740 BUILD_BUG_ON(ARRAY_SIZE(sc->mcast_rsc) != ARRAY_SIZE(status->gtk_seq)); 1741 1742 /* GTK RX counters */ 1743 for (i = 0; i < ARRAY_SIZE(sc->mcast_key_id_map); i++) { 1744 u8 entry = sc->mcast_key_id_map[i]; 1745 1746 if (entry < ARRAY_SIZE(sc->mcast_rsc)) 1747 iwl_mvm_convert_key_counters_v5_gtk_seq(status, sc, 1748 entry, i); 1749 } 1750 1751 /* PTK TX counters not needed, assigned in device */ 1752 1753 /* PTK RX counters */ 1754 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1755 iwl_mvm_le64_to_tkip_seq(sc->ucast_rsc[tid], 1756 &status->ptk.tkip.seq[tid]); 1757 iwl_mvm_le64_to_aes_seq(sc->ucast_rsc[tid], 1758 &status->ptk.aes.seq[tid]); 1759 } 1760 } 1761 1762 static void iwl_mvm_set_key_rx_seq_idx(struct ieee80211_key_conf *key, 1763 struct iwl_wowlan_status_data *status, 1764 int idx) 1765 { 1766 switch (key->cipher) { 1767 case WLAN_CIPHER_SUITE_CCMP: 1768 case WLAN_CIPHER_SUITE_GCMP: 1769 case WLAN_CIPHER_SUITE_GCMP_256: 1770 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].aes.seq); 1771 break; 1772 case WLAN_CIPHER_SUITE_TKIP: 1773 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].tkip.seq); 1774 break; 1775 default: 1776 WARN_ON(1); 1777 } 1778 } 1779 1780 static void iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf *key, 1781 struct iwl_wowlan_status_data *status) 1782 { 1783 int i; 1784 1785 for (i = 0; i < ARRAY_SIZE(status->gtk_seq); i++) { 1786 if (!status->gtk_seq[i].valid) 1787 continue; 1788 1789 if (status->gtk_seq[i].key_id == key->keyidx) 1790 iwl_mvm_set_key_rx_seq_idx(key, status, i); 1791 } 1792 } 1793 1794 struct iwl_mvm_d3_gtk_iter_data { 1795 struct iwl_mvm *mvm; 1796 struct iwl_wowlan_status_data *status; 1797 u32 gtk_cipher, igtk_cipher, bigtk_cipher; 1798 bool unhandled_cipher, igtk_support, bigtk_support; 1799 int num_keys; 1800 }; 1801 1802 static void iwl_mvm_d3_find_last_keys(struct ieee80211_hw *hw, 1803 struct ieee80211_vif *vif, 1804 struct ieee80211_sta *sta, 1805 struct ieee80211_key_conf *key, 1806 void *_data) 1807 { 1808 struct iwl_mvm_d3_gtk_iter_data *data = _data; 1809 int link_id = vif->active_links ? __ffs(vif->active_links) : -1; 1810 1811 if (link_id >= 0 && key->link_id >= 0 && link_id != key->link_id) 1812 return; 1813 1814 if (data->unhandled_cipher) 1815 return; 1816 1817 switch (key->cipher) { 1818 case WLAN_CIPHER_SUITE_WEP40: 1819 case WLAN_CIPHER_SUITE_WEP104: 1820 /* ignore WEP completely, nothing to do */ 1821 return; 1822 case WLAN_CIPHER_SUITE_CCMP: 1823 case WLAN_CIPHER_SUITE_GCMP: 1824 case WLAN_CIPHER_SUITE_GCMP_256: 1825 case WLAN_CIPHER_SUITE_TKIP: 1826 /* we support these */ 1827 data->gtk_cipher = key->cipher; 1828 break; 1829 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 1830 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 1831 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 1832 case WLAN_CIPHER_SUITE_AES_CMAC: 1833 /* we support these */ 1834 if (data->igtk_support && 1835 (key->keyidx == 4 || key->keyidx == 5)) { 1836 data->igtk_cipher = key->cipher; 1837 } else if (data->bigtk_support && 1838 (key->keyidx == 6 || key->keyidx == 7)) { 1839 data->bigtk_cipher = key->cipher; 1840 } else { 1841 data->unhandled_cipher = true; 1842 return; 1843 } 1844 break; 1845 default: 1846 /* everything else - disconnect from AP */ 1847 data->unhandled_cipher = true; 1848 return; 1849 } 1850 1851 data->num_keys++; 1852 } 1853 1854 static void 1855 iwl_mvm_d3_set_igtk_bigtk_ipn(const struct iwl_multicast_key_data *key, 1856 struct ieee80211_key_seq *seq, u32 cipher) 1857 { 1858 switch (cipher) { 1859 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 1860 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 1861 BUILD_BUG_ON(sizeof(seq->aes_gmac.pn) != sizeof(key->ipn)); 1862 memcpy(seq->aes_gmac.pn, key->ipn, sizeof(seq->aes_gmac.pn)); 1863 break; 1864 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 1865 case WLAN_CIPHER_SUITE_AES_CMAC: 1866 BUILD_BUG_ON(sizeof(seq->aes_cmac.pn) != sizeof(key->ipn)); 1867 memcpy(seq->aes_cmac.pn, key->ipn, sizeof(seq->aes_cmac.pn)); 1868 break; 1869 default: 1870 WARN_ON(1); 1871 } 1872 } 1873 1874 static void 1875 iwl_mvm_d3_update_igtk_bigtk(struct iwl_wowlan_status_data *status, 1876 struct ieee80211_key_conf *key, 1877 struct iwl_multicast_key_data *key_data) 1878 { 1879 struct ieee80211_key_seq seq; 1880 1881 iwl_mvm_d3_set_igtk_bigtk_ipn(key_data, &seq, key->cipher); 1882 ieee80211_set_key_rx_seq(key, 0, &seq); 1883 } 1884 1885 static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw, 1886 struct ieee80211_vif *vif, 1887 struct ieee80211_sta *sta, 1888 struct ieee80211_key_conf *key, 1889 void *_data) 1890 { 1891 struct iwl_mvm_d3_gtk_iter_data *data = _data; 1892 struct iwl_wowlan_status_data *status = data->status; 1893 s8 keyidx; 1894 int link_id = vif->active_links ? __ffs(vif->active_links) : -1; 1895 1896 if (link_id >= 0 && key->link_id >= 0 && link_id != key->link_id) 1897 return; 1898 1899 if (data->unhandled_cipher) 1900 return; 1901 1902 switch (key->cipher) { 1903 case WLAN_CIPHER_SUITE_WEP40: 1904 case WLAN_CIPHER_SUITE_WEP104: 1905 /* ignore WEP completely, nothing to do */ 1906 return; 1907 case WLAN_CIPHER_SUITE_CCMP: 1908 case WLAN_CIPHER_SUITE_GCMP: 1909 case WLAN_CIPHER_SUITE_GCMP_256: 1910 if (sta) { 1911 atomic64_set(&key->tx_pn, status->ptk.aes.tx_pn); 1912 iwl_mvm_set_aes_ptk_rx_seq(data->mvm, status, sta, key); 1913 return; 1914 } 1915 fallthrough; 1916 case WLAN_CIPHER_SUITE_TKIP: 1917 if (sta) { 1918 atomic64_set(&key->tx_pn, status->ptk.tkip.tx_pn); 1919 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.tkip.seq); 1920 return; 1921 } 1922 keyidx = key->keyidx; 1923 /* 1924 * Update the seq even if there was a rekey. If there was a 1925 * rekey, we will update again after replacing the key 1926 */ 1927 if ((status->gtk[0].len && keyidx == status->gtk[0].id) || 1928 (status->gtk[1].len && keyidx == status->gtk[1].id)) 1929 iwl_mvm_set_key_rx_seq(key, status); 1930 break; 1931 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 1932 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 1933 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 1934 case WLAN_CIPHER_SUITE_AES_CMAC: 1935 if (key->keyidx == 4 || key->keyidx == 5) { 1936 iwl_mvm_d3_update_igtk_bigtk(status, key, 1937 &status->igtk); 1938 } 1939 if (key->keyidx == 6 || key->keyidx == 7) { 1940 u8 idx = key->keyidx == status->bigtk[1].id; 1941 1942 iwl_mvm_d3_update_igtk_bigtk(status, key, 1943 &status->bigtk[idx]); 1944 } 1945 } 1946 } 1947 1948 static bool iwl_mvm_gtk_rekey(struct iwl_wowlan_status_data *status, 1949 struct ieee80211_vif *vif, 1950 struct iwl_mvm *mvm, u32 gtk_cipher) 1951 { 1952 int i, j; 1953 struct ieee80211_key_conf *key; 1954 DEFINE_RAW_FLEX(struct ieee80211_key_conf, conf, key, 1955 WOWLAN_KEY_MAX_SIZE); 1956 int link_id = vif->active_links ? __ffs(vif->active_links) : -1; 1957 u8 key_data[WOWLAN_KEY_MAX_SIZE]; 1958 1959 conf->cipher = gtk_cipher; 1960 1961 BUILD_BUG_ON(WLAN_KEY_LEN_CCMP != WLAN_KEY_LEN_GCMP); 1962 BUILD_BUG_ON(WOWLAN_KEY_MAX_SIZE < WLAN_KEY_LEN_CCMP); 1963 BUILD_BUG_ON(WOWLAN_KEY_MAX_SIZE < WLAN_KEY_LEN_GCMP_256); 1964 BUILD_BUG_ON(WOWLAN_KEY_MAX_SIZE < WLAN_KEY_LEN_TKIP); 1965 BUILD_BUG_ON(WOWLAN_KEY_MAX_SIZE < sizeof(status->gtk[0].key)); 1966 1967 switch (gtk_cipher) { 1968 case WLAN_CIPHER_SUITE_CCMP: 1969 case WLAN_CIPHER_SUITE_GCMP: 1970 conf->keylen = WLAN_KEY_LEN_CCMP; 1971 break; 1972 case WLAN_CIPHER_SUITE_GCMP_256: 1973 conf->keylen = WLAN_KEY_LEN_GCMP_256; 1974 break; 1975 case WLAN_CIPHER_SUITE_TKIP: 1976 conf->keylen = WLAN_KEY_LEN_TKIP; 1977 break; 1978 default: 1979 WARN_ON(1); 1980 } 1981 1982 for (i = 0; i < ARRAY_SIZE(status->gtk); i++) { 1983 if (!status->gtk[i].len) 1984 continue; 1985 1986 conf->keyidx = status->gtk[i].id; 1987 IWL_DEBUG_WOWLAN(mvm, 1988 "Received from FW GTK cipher %d, key index %d\n", 1989 conf->cipher, conf->keyidx); 1990 memcpy(conf->key, status->gtk[i].key, 1991 sizeof(status->gtk[i].key)); 1992 memcpy(key_data, status->gtk[i].key, sizeof(status->gtk[i].key)); 1993 1994 key = ieee80211_gtk_rekey_add(vif, status->gtk[i].id, key_data, 1995 sizeof(key_data), link_id); 1996 if (IS_ERR(key)) { 1997 /* FW may send also the old keys */ 1998 if (PTR_ERR(key) == -EALREADY) 1999 continue; 2000 return false; 2001 } 2002 2003 for (j = 0; j < ARRAY_SIZE(status->gtk_seq); j++) { 2004 if (!status->gtk_seq[j].valid || 2005 status->gtk_seq[j].key_id != key->keyidx) 2006 continue; 2007 iwl_mvm_set_key_rx_seq_idx(key, status, j); 2008 break; 2009 } 2010 WARN_ON(j == ARRAY_SIZE(status->gtk_seq)); 2011 } 2012 2013 return true; 2014 } 2015 2016 static bool 2017 iwl_mvm_d3_igtk_bigtk_rekey_add(struct iwl_wowlan_status_data *status, 2018 struct ieee80211_vif *vif, u32 cipher, 2019 struct iwl_multicast_key_data *key_data) 2020 { 2021 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2022 DEFINE_RAW_FLEX(struct ieee80211_key_conf, conf, key, 2023 WOWLAN_KEY_MAX_SIZE); 2024 struct ieee80211_key_conf *key_config; 2025 struct ieee80211_key_seq seq; 2026 int link_id = vif->active_links ? __ffs(vif->active_links) : -1; 2027 u8 key[WOWLAN_KEY_MAX_SIZE]; 2028 s8 keyidx = key_data->id; 2029 2030 conf->cipher = cipher; 2031 conf->keyidx = keyidx; 2032 2033 if (!key_data->len) 2034 return true; 2035 2036 iwl_mvm_d3_set_igtk_bigtk_ipn(key_data, &seq, conf->cipher); 2037 2038 switch (cipher) { 2039 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 2040 conf->keylen = WLAN_KEY_LEN_BIP_GMAC_128; 2041 break; 2042 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 2043 conf->keylen = WLAN_KEY_LEN_BIP_GMAC_256; 2044 break; 2045 case WLAN_CIPHER_SUITE_AES_CMAC: 2046 conf->keylen = WLAN_KEY_LEN_AES_CMAC; 2047 break; 2048 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 2049 conf->keylen = WLAN_KEY_LEN_BIP_CMAC_256; 2050 break; 2051 default: 2052 WARN_ON(1); 2053 } 2054 BUILD_BUG_ON(WOWLAN_KEY_MAX_SIZE < sizeof(key_data->key)); 2055 memcpy(conf->key, key_data->key, conf->keylen); 2056 2057 memcpy(key, key_data->key, sizeof(key_data->key)); 2058 2059 key_config = ieee80211_gtk_rekey_add(vif, keyidx, key, sizeof(key), 2060 link_id); 2061 if (IS_ERR(key_config)) { 2062 /* FW may send also the old keys */ 2063 return PTR_ERR(key_config) == -EALREADY; 2064 } 2065 ieee80211_set_key_rx_seq(key_config, 0, &seq); 2066 2067 if (keyidx == 4 || keyidx == 5) { 2068 struct iwl_mvm_vif_link_info *mvm_link; 2069 2070 link_id = link_id < 0 ? 0 : link_id; 2071 mvm_link = mvmvif->link[link_id]; 2072 if (mvm_link->igtk) 2073 mvm_link->igtk->hw_key_idx = STA_KEY_IDX_INVALID; 2074 mvm_link->igtk = key_config; 2075 } 2076 2077 if (vif->type == NL80211_IFTYPE_STATION && (keyidx == 6 || keyidx == 7)) 2078 rcu_assign_pointer(mvmvif->bcn_prot.keys[keyidx - 6], 2079 key_config); 2080 2081 return true; 2082 } 2083 2084 static int iwl_mvm_lookup_wowlan_status_ver(struct iwl_mvm *mvm) 2085 { 2086 u8 notif_ver; 2087 2088 if (!fw_has_api(&mvm->fw->ucode_capa, 2089 IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL)) 2090 return 6; 2091 2092 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */ 2093 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP, 2094 WOWLAN_GET_STATUSES, 0); 2095 if (!notif_ver) 2096 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, 2097 WOWLAN_GET_STATUSES, 7); 2098 2099 return notif_ver; 2100 } 2101 2102 static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm, 2103 struct ieee80211_vif *vif, 2104 struct iwl_wowlan_status_data *status) 2105 { 2106 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2107 struct iwl_mvm_d3_gtk_iter_data gtkdata = { 2108 .mvm = mvm, 2109 .status = status, 2110 }; 2111 int i; 2112 u32 disconnection_reasons = 2113 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 2114 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH; 2115 2116 if (!status || !vif->bss_conf.bssid) 2117 return false; 2118 2119 if (iwl_mvm_lookup_wowlan_status_ver(mvm) > 6 || 2120 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2121 WOWLAN_INFO_NOTIFICATION, 2122 0)) 2123 gtkdata.igtk_support = true; 2124 2125 if (iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2126 WOWLAN_INFO_NOTIFICATION, 2127 0) >= 3) 2128 gtkdata.bigtk_support = true; 2129 2130 /* find last GTK that we used initially, if any */ 2131 ieee80211_iter_keys(mvm->hw, vif, 2132 iwl_mvm_d3_find_last_keys, >kdata); 2133 /* not trying to keep connections with MFP/unhandled ciphers */ 2134 if (gtkdata.unhandled_cipher) 2135 return false; 2136 if (!gtkdata.num_keys) 2137 goto out; 2138 2139 /* 2140 * invalidate all other GTKs that might still exist and update 2141 * the one that we used 2142 */ 2143 ieee80211_iter_keys(mvm->hw, vif, 2144 iwl_mvm_d3_update_keys, >kdata); 2145 2146 if (status->num_of_gtk_rekeys) { 2147 __be64 replay_ctr = cpu_to_be64(status->replay_ctr); 2148 2149 IWL_DEBUG_WOWLAN(mvm, "num of GTK rekeying %d\n", 2150 status->num_of_gtk_rekeys); 2151 2152 if (!iwl_mvm_gtk_rekey(status, vif, mvm, gtkdata.gtk_cipher)) 2153 return false; 2154 2155 if (!iwl_mvm_d3_igtk_bigtk_rekey_add(status, vif, 2156 gtkdata.igtk_cipher, 2157 &status->igtk)) 2158 return false; 2159 2160 for (i = 0; i < ARRAY_SIZE(status->bigtk); i++) { 2161 if (!iwl_mvm_d3_igtk_bigtk_rekey_add(status, vif, 2162 gtkdata.bigtk_cipher, 2163 &status->bigtk[i])) 2164 return false; 2165 } 2166 2167 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid, 2168 (void *)&replay_ctr, GFP_KERNEL); 2169 } 2170 2171 out: 2172 if (iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP, 2173 WOWLAN_GET_STATUSES, 2174 IWL_FW_CMD_VER_UNKNOWN) < 10) { 2175 mvmvif->seqno_valid = true; 2176 /* +0x10 because the set API expects next-to-use, not last-used */ 2177 mvmvif->seqno = status->non_qos_seq_ctr + 0x10; 2178 } 2179 2180 if (status->wakeup_reasons & disconnection_reasons) 2181 return false; 2182 2183 return true; 2184 } 2185 2186 static void iwl_mvm_convert_gtk_v2(struct iwl_wowlan_status_data *status, 2187 struct iwl_wowlan_gtk_status_v2 *data) 2188 { 2189 BUILD_BUG_ON(sizeof(status->gtk[0].key) < sizeof(data->key)); 2190 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY + 2191 sizeof(data->tkip_mic_key) > 2192 sizeof(status->gtk[0].key)); 2193 2194 status->gtk[0].len = data->key_len; 2195 status->gtk[0].flags = data->key_flags; 2196 status->gtk[0].id = status->gtk[0].flags & IWL_WOWLAN_GTK_IDX_MASK; 2197 2198 memcpy(status->gtk[0].key, data->key, sizeof(data->key)); 2199 2200 /* if it's as long as the TKIP encryption key, copy MIC key */ 2201 if (status->gtk[0].len == NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY) 2202 memcpy(status->gtk[0].key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 2203 data->tkip_mic_key, sizeof(data->tkip_mic_key)); 2204 } 2205 2206 static void iwl_mvm_convert_gtk_v3(struct iwl_wowlan_status_data *status, 2207 struct iwl_wowlan_gtk_status_v3 *data) 2208 { 2209 int data_idx, status_idx = 0; 2210 2211 BUILD_BUG_ON(sizeof(status->gtk[0].key) < sizeof(data[0].key)); 2212 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY + 2213 sizeof(data[0].tkip_mic_key) > 2214 sizeof(status->gtk[0].key)); 2215 BUILD_BUG_ON(ARRAY_SIZE(status->gtk) < WOWLAN_GTK_KEYS_NUM); 2216 for (data_idx = 0; data_idx < ARRAY_SIZE(status->gtk); data_idx++) { 2217 if (!(data[data_idx].key_len)) 2218 continue; 2219 status->gtk[status_idx].len = data[data_idx].key_len; 2220 status->gtk[status_idx].flags = data[data_idx].key_flags; 2221 status->gtk[status_idx].id = status->gtk[status_idx].flags & 2222 IWL_WOWLAN_GTK_IDX_MASK; 2223 2224 memcpy(status->gtk[status_idx].key, data[data_idx].key, 2225 sizeof(data[data_idx].key)); 2226 2227 /* if it's as long as the TKIP encryption key, copy MIC key */ 2228 if (status->gtk[status_idx].len == 2229 NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY) 2230 memcpy(status->gtk[status_idx].key + 2231 NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 2232 data[data_idx].tkip_mic_key, 2233 sizeof(data[data_idx].tkip_mic_key)); 2234 status_idx++; 2235 } 2236 } 2237 2238 static void iwl_mvm_convert_igtk(struct iwl_wowlan_status_data *status, 2239 struct iwl_wowlan_igtk_status *data) 2240 { 2241 int i; 2242 2243 BUILD_BUG_ON(sizeof(status->igtk.key) < sizeof(data->key)); 2244 BUILD_BUG_ON(sizeof(status->igtk.ipn) != sizeof(data->ipn)); 2245 2246 if (!data->key_len) 2247 return; 2248 2249 status->igtk.len = data->key_len; 2250 status->igtk.flags = data->key_flags; 2251 status->igtk.id = u32_get_bits(data->key_flags, 2252 IWL_WOWLAN_IGTK_BIGTK_IDX_MASK) 2253 + WOWLAN_IGTK_MIN_INDEX; 2254 2255 memcpy(status->igtk.key, data->key, sizeof(data->key)); 2256 2257 /* mac80211 expects big endian for memcmp() to work, convert */ 2258 for (i = 0; i < sizeof(data->ipn); i++) 2259 status->igtk.ipn[i] = data->ipn[sizeof(data->ipn) - i - 1]; 2260 } 2261 2262 static void iwl_mvm_convert_bigtk(struct iwl_wowlan_status_data *status, 2263 const struct iwl_wowlan_igtk_status *data) 2264 { 2265 int data_idx, status_idx = 0; 2266 2267 BUILD_BUG_ON(ARRAY_SIZE(status->bigtk) < WOWLAN_BIGTK_KEYS_NUM); 2268 2269 for (data_idx = 0; data_idx < WOWLAN_BIGTK_KEYS_NUM; data_idx++) { 2270 if (!data[data_idx].key_len) 2271 continue; 2272 2273 status->bigtk[status_idx].len = data[data_idx].key_len; 2274 status->bigtk[status_idx].flags = data[data_idx].key_flags; 2275 status->bigtk[status_idx].id = 2276 u32_get_bits(data[data_idx].key_flags, 2277 IWL_WOWLAN_IGTK_BIGTK_IDX_MASK) 2278 + WOWLAN_BIGTK_MIN_INDEX; 2279 2280 BUILD_BUG_ON(sizeof(status->bigtk[status_idx].key) < 2281 sizeof(data[data_idx].key)); 2282 BUILD_BUG_ON(sizeof(status->bigtk[status_idx].ipn) < 2283 sizeof(data[data_idx].ipn)); 2284 2285 memcpy(status->bigtk[status_idx].key, data[data_idx].key, 2286 sizeof(data[data_idx].key)); 2287 memcpy(status->bigtk[status_idx].ipn, data[data_idx].ipn, 2288 sizeof(data[data_idx].ipn)); 2289 status_idx++; 2290 } 2291 } 2292 2293 static void iwl_mvm_parse_wowlan_info_notif(struct iwl_mvm *mvm, 2294 struct iwl_wowlan_info_notif *data, 2295 struct iwl_wowlan_status_data *status, 2296 u32 len) 2297 { 2298 if (IWL_FW_CHECK(mvm, data->num_mlo_link_keys, 2299 "MLO is not supported, shouldn't receive MLO keys\n")) 2300 return; 2301 2302 if (len < sizeof(*data)) { 2303 IWL_ERR(mvm, "Invalid WoWLAN info notification!\n"); 2304 status = NULL; 2305 return; 2306 } 2307 2308 if (mvm->fast_resume) 2309 return; 2310 2311 iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc); 2312 iwl_mvm_convert_gtk_v3(status, data->gtk); 2313 iwl_mvm_convert_igtk(status, &data->igtk[0]); 2314 iwl_mvm_convert_bigtk(status, data->bigtk); 2315 status->replay_ctr = le64_to_cpu(data->replay_ctr); 2316 status->pattern_number = le16_to_cpu(data->pattern_number); 2317 status->tid_offloaded_tx = data->tid_offloaded_tx; 2318 if (IWL_FW_CHECK(mvm, 2319 data->tid_offloaded_tx >= 2320 ARRAY_SIZE(status->qos_seq_ctr), 2321 "tid_offloaded_tx is out of bound %d\n", 2322 data->tid_offloaded_tx)) 2323 data->tid_offloaded_tx = 0; 2324 status->qos_seq_ctr[data->tid_offloaded_tx] = 2325 le16_to_cpu(data->qos_seq_ctr); 2326 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); 2327 status->num_of_gtk_rekeys = 2328 le32_to_cpu(data->num_of_gtk_rekeys); 2329 status->received_beacons = le32_to_cpu(data->received_beacons); 2330 status->tid_tear_down = data->tid_tear_down; 2331 } 2332 2333 static void 2334 iwl_mvm_parse_wowlan_info_notif_v3(struct iwl_mvm *mvm, 2335 struct iwl_wowlan_info_notif_v3 *data, 2336 struct iwl_wowlan_status_data *status, 2337 u32 len) 2338 { 2339 u32 i; 2340 2341 if (len < sizeof(*data)) { 2342 IWL_ERR(mvm, "Invalid WoWLAN info notification!\n"); 2343 status = NULL; 2344 return; 2345 } 2346 2347 if (mvm->fast_resume) 2348 return; 2349 2350 iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc); 2351 iwl_mvm_convert_gtk_v3(status, data->gtk); 2352 iwl_mvm_convert_igtk(status, &data->igtk[0]); 2353 iwl_mvm_convert_bigtk(status, data->bigtk); 2354 status->replay_ctr = le64_to_cpu(data->replay_ctr); 2355 status->pattern_number = le16_to_cpu(data->pattern_number); 2356 for (i = 0; i < IWL_MAX_TID_COUNT; i++) 2357 status->qos_seq_ctr[i] = 2358 le16_to_cpu(data->qos_seq_ctr[i]); 2359 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); 2360 status->num_of_gtk_rekeys = 2361 le32_to_cpu(data->num_of_gtk_rekeys); 2362 status->received_beacons = le32_to_cpu(data->received_beacons); 2363 status->tid_tear_down = data->tid_tear_down; 2364 } 2365 2366 static void 2367 iwl_mvm_parse_wowlan_info_notif_v1(struct iwl_mvm *mvm, 2368 struct iwl_wowlan_info_notif_v1 *data, 2369 struct iwl_wowlan_status_data *status, 2370 u32 len) 2371 { 2372 u32 i; 2373 2374 if (len < sizeof(*data)) { 2375 IWL_ERR(mvm, "Invalid WoWLAN info notification!\n"); 2376 status = NULL; 2377 return; 2378 } 2379 2380 iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc); 2381 iwl_mvm_convert_gtk_v3(status, data->gtk); 2382 iwl_mvm_convert_igtk(status, &data->igtk[0]); 2383 status->replay_ctr = le64_to_cpu(data->replay_ctr); 2384 status->pattern_number = le16_to_cpu(data->pattern_number); 2385 for (i = 0; i < IWL_MAX_TID_COUNT; i++) 2386 status->qos_seq_ctr[i] = 2387 le16_to_cpu(data->qos_seq_ctr[i]); 2388 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); 2389 status->num_of_gtk_rekeys = 2390 le32_to_cpu(data->num_of_gtk_rekeys); 2391 status->received_beacons = le32_to_cpu(data->received_beacons); 2392 status->tid_tear_down = data->tid_tear_down; 2393 } 2394 2395 /* Occasionally, templates would be nice. This is one of those times ... */ 2396 #define iwl_mvm_parse_wowlan_status_common(_ver) \ 2397 static struct iwl_wowlan_status_data * \ 2398 iwl_mvm_parse_wowlan_status_common_ ## _ver(struct iwl_mvm *mvm, \ 2399 struct iwl_wowlan_status_ ##_ver *data,\ 2400 int len) \ 2401 { \ 2402 struct iwl_wowlan_status_data *status; \ 2403 int data_size, i; \ 2404 \ 2405 if (len < sizeof(*data)) { \ 2406 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \ 2407 return NULL; \ 2408 } \ 2409 \ 2410 data_size = ALIGN(le32_to_cpu(data->wake_packet_bufsize), 4); \ 2411 if (len != sizeof(*data) + data_size) { \ 2412 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \ 2413 return NULL; \ 2414 } \ 2415 \ 2416 status = kzalloc(sizeof(*status), GFP_KERNEL); \ 2417 if (!status) \ 2418 return NULL; \ 2419 \ 2420 /* copy all the common fields */ \ 2421 status->replay_ctr = le64_to_cpu(data->replay_ctr); \ 2422 status->pattern_number = le16_to_cpu(data->pattern_number); \ 2423 status->non_qos_seq_ctr = le16_to_cpu(data->non_qos_seq_ctr); \ 2424 for (i = 0; i < 8; i++) \ 2425 status->qos_seq_ctr[i] = \ 2426 le16_to_cpu(data->qos_seq_ctr[i]); \ 2427 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); \ 2428 status->num_of_gtk_rekeys = \ 2429 le32_to_cpu(data->num_of_gtk_rekeys); \ 2430 status->received_beacons = le32_to_cpu(data->received_beacons); \ 2431 status->wake_packet_length = \ 2432 le32_to_cpu(data->wake_packet_length); \ 2433 status->wake_packet_bufsize = \ 2434 le32_to_cpu(data->wake_packet_bufsize); \ 2435 if (status->wake_packet_bufsize) { \ 2436 status->wake_packet = \ 2437 kmemdup(data->wake_packet, \ 2438 status->wake_packet_bufsize, \ 2439 GFP_KERNEL); \ 2440 if (!status->wake_packet) { \ 2441 kfree(status); \ 2442 return NULL; \ 2443 } \ 2444 } else { \ 2445 status->wake_packet = NULL; \ 2446 } \ 2447 \ 2448 return status; \ 2449 } 2450 2451 iwl_mvm_parse_wowlan_status_common(v6) 2452 iwl_mvm_parse_wowlan_status_common(v7) 2453 2454 static struct iwl_wowlan_status_data * 2455 iwl_mvm_send_wowlan_get_status(struct iwl_mvm *mvm, u8 sta_id) 2456 { 2457 struct iwl_wowlan_status_data *status; 2458 struct iwl_wowlan_get_status_cmd get_status_cmd = { 2459 .sta_id = cpu_to_le32(sta_id), 2460 }; 2461 struct iwl_host_cmd cmd = { 2462 .id = WOWLAN_GET_STATUSES, 2463 .flags = CMD_WANT_SKB, 2464 .data = { &get_status_cmd, }, 2465 .len = { sizeof(get_status_cmd), }, 2466 }; 2467 int ret, len; 2468 u8 notif_ver; 2469 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id, 2470 IWL_FW_CMD_VER_UNKNOWN); 2471 2472 if (cmd_ver == IWL_FW_CMD_VER_UNKNOWN) 2473 cmd.len[0] = 0; 2474 2475 lockdep_assert_held(&mvm->mutex); 2476 2477 ret = iwl_mvm_send_cmd(mvm, &cmd); 2478 if (ret) { 2479 IWL_ERR(mvm, "failed to query wakeup status (%d)\n", ret); 2480 return ERR_PTR(ret); 2481 } 2482 2483 len = iwl_rx_packet_payload_len(cmd.resp_pkt); 2484 2485 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */ 2486 notif_ver = iwl_mvm_lookup_wowlan_status_ver(mvm); 2487 2488 if (notif_ver < 7) { 2489 struct iwl_wowlan_status_v6 *v6 = (void *)cmd.resp_pkt->data; 2490 2491 status = iwl_mvm_parse_wowlan_status_common_v6(mvm, v6, len); 2492 if (!status) 2493 goto out_free_resp; 2494 2495 BUILD_BUG_ON(sizeof(v6->gtk.decrypt_key) > 2496 sizeof(status->gtk[0].key)); 2497 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY + 2498 sizeof(v6->gtk.tkip_mic_key) > 2499 sizeof(status->gtk[0].key)); 2500 2501 /* copy GTK info to the right place */ 2502 memcpy(status->gtk[0].key, v6->gtk.decrypt_key, 2503 sizeof(v6->gtk.decrypt_key)); 2504 memcpy(status->gtk[0].key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 2505 v6->gtk.tkip_mic_key, 2506 sizeof(v6->gtk.tkip_mic_key)); 2507 2508 iwl_mvm_convert_key_counters(status, &v6->gtk.rsc.all_tsc_rsc, 2509 v6->gtk.key_index); 2510 2511 /* hardcode the key length to 16 since v6 only supports 16 */ 2512 status->gtk[0].len = 16; 2513 2514 /* 2515 * The key index only uses 2 bits (values 0 to 3) and 2516 * we always set bit 7 which means this is the 2517 * currently used key. 2518 */ 2519 status->gtk[0].flags = v6->gtk.key_index | BIT(7); 2520 status->gtk[0].id = v6->gtk.key_index; 2521 } else if (notif_ver == 7) { 2522 struct iwl_wowlan_status_v7 *v7 = (void *)cmd.resp_pkt->data; 2523 2524 status = iwl_mvm_parse_wowlan_status_common_v7(mvm, v7, len); 2525 if (!status) 2526 goto out_free_resp; 2527 2528 iwl_mvm_convert_key_counters(status, &v7->gtk[0].rsc.all_tsc_rsc, 2529 v7->gtk[0].key_flags & IWL_WOWLAN_GTK_IDX_MASK); 2530 iwl_mvm_convert_gtk_v2(status, &v7->gtk[0]); 2531 iwl_mvm_convert_igtk(status, &v7->igtk[0]); 2532 } else { 2533 IWL_ERR(mvm, 2534 "Firmware advertises unknown WoWLAN status response %d!\n", 2535 notif_ver); 2536 status = NULL; 2537 } 2538 2539 out_free_resp: 2540 iwl_free_resp(&cmd); 2541 return status; 2542 } 2543 2544 /* releases the MVM mutex */ 2545 static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm, 2546 struct ieee80211_vif *vif, 2547 struct iwl_wowlan_status_data *status) 2548 { 2549 int i; 2550 bool keep = false; 2551 struct iwl_mvm_sta *mvm_ap_sta; 2552 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2553 int link_id = vif->active_links ? __ffs(vif->active_links) : 0; 2554 struct iwl_mvm_vif_link_info *mvm_link = mvmvif->link[link_id]; 2555 int wowlan_info_ver = iwl_fw_lookup_notif_ver(mvm->fw, 2556 PROT_OFFLOAD_GROUP, 2557 WOWLAN_INFO_NOTIFICATION, 2558 IWL_FW_CMD_VER_UNKNOWN); 2559 2560 if (WARN_ON(!mvm_link)) 2561 goto out_unlock; 2562 2563 if (!status) 2564 goto out_unlock; 2565 2566 IWL_DEBUG_WOWLAN(mvm, "wakeup reason 0x%x\n", 2567 status->wakeup_reasons); 2568 2569 mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, mvm_link->ap_sta_id); 2570 if (!mvm_ap_sta) 2571 goto out_unlock; 2572 2573 /* firmware stores last-used value, we store next value */ 2574 if (wowlan_info_ver >= 5) { 2575 mvm_ap_sta->tid_data[status->tid_offloaded_tx].seq_number = 2576 status->qos_seq_ctr[status->tid_offloaded_tx] + 0x10; 2577 } else { 2578 for (i = 0; i < IWL_MAX_TID_COUNT; i++) 2579 mvm_ap_sta->tid_data[i].seq_number = 2580 status->qos_seq_ctr[i] + 0x10; 2581 } 2582 2583 if (mvm->trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_22000) { 2584 i = mvm->offload_tid; 2585 iwl_trans_set_q_ptrs(mvm->trans, 2586 mvm_ap_sta->tid_data[i].txq_id, 2587 mvm_ap_sta->tid_data[i].seq_number >> 4); 2588 } 2589 2590 iwl_mvm_report_wakeup_reasons(mvm, vif, status); 2591 2592 keep = iwl_mvm_setup_connection_keep(mvm, vif, status); 2593 out_unlock: 2594 mutex_unlock(&mvm->mutex); 2595 return keep; 2596 } 2597 2598 #define ND_QUERY_BUF_LEN (sizeof(struct iwl_scan_offload_profile_match) * \ 2599 IWL_SCAN_MAX_PROFILES) 2600 2601 struct iwl_mvm_nd_results { 2602 u32 matched_profiles; 2603 u8 matches[ND_QUERY_BUF_LEN]; 2604 }; 2605 2606 static int 2607 iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm, 2608 struct iwl_mvm_nd_results *results) 2609 { 2610 struct iwl_scan_offload_match_info *query; 2611 struct iwl_host_cmd cmd = { 2612 .id = SCAN_OFFLOAD_PROFILES_QUERY_CMD, 2613 .flags = CMD_WANT_SKB, 2614 }; 2615 int ret, len; 2616 size_t query_len, matches_len; 2617 int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw); 2618 2619 ret = iwl_mvm_send_cmd(mvm, &cmd); 2620 if (ret) { 2621 IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret); 2622 return ret; 2623 } 2624 2625 if (fw_has_api(&mvm->fw->ucode_capa, 2626 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2627 query_len = sizeof(struct iwl_scan_offload_match_info); 2628 matches_len = sizeof(struct iwl_scan_offload_profile_match) * 2629 max_profiles; 2630 } else { 2631 query_len = sizeof(struct iwl_scan_offload_profiles_query_v1); 2632 matches_len = sizeof(struct iwl_scan_offload_profile_match_v1) * 2633 max_profiles; 2634 } 2635 2636 len = iwl_rx_packet_payload_len(cmd.resp_pkt); 2637 if (len < query_len) { 2638 IWL_ERR(mvm, "Invalid scan offload profiles query response!\n"); 2639 ret = -EIO; 2640 goto out_free_resp; 2641 } 2642 2643 query = (void *)cmd.resp_pkt->data; 2644 2645 results->matched_profiles = le32_to_cpu(query->matched_profiles); 2646 memcpy(results->matches, query->matches, matches_len); 2647 2648 #ifdef CONFIG_IWLWIFI_DEBUGFS 2649 mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done); 2650 #endif 2651 2652 out_free_resp: 2653 iwl_free_resp(&cmd); 2654 return ret; 2655 } 2656 2657 static int iwl_mvm_query_num_match_chans(struct iwl_mvm *mvm, 2658 struct iwl_mvm_nd_results *results, 2659 int idx) 2660 { 2661 int n_chans = 0, i; 2662 2663 if (fw_has_api(&mvm->fw->ucode_capa, 2664 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2665 struct iwl_scan_offload_profile_match *matches = 2666 (void *)results->matches; 2667 2668 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; i++) 2669 n_chans += hweight8(matches[idx].matching_channels[i]); 2670 } else { 2671 struct iwl_scan_offload_profile_match_v1 *matches = 2672 (void *)results->matches; 2673 2674 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1; i++) 2675 n_chans += hweight8(matches[idx].matching_channels[i]); 2676 } 2677 2678 return n_chans; 2679 } 2680 2681 static void iwl_mvm_query_set_freqs(struct iwl_mvm *mvm, 2682 struct iwl_mvm_nd_results *results, 2683 struct cfg80211_wowlan_nd_match *match, 2684 int idx) 2685 { 2686 int i; 2687 int n_channels = 0; 2688 2689 if (fw_has_api(&mvm->fw->ucode_capa, 2690 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2691 struct iwl_scan_offload_profile_match *matches = 2692 (void *)results->matches; 2693 2694 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; i++) 2695 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8))) 2696 match->channels[n_channels++] = 2697 mvm->nd_channels[i]->center_freq; 2698 } else { 2699 struct iwl_scan_offload_profile_match_v1 *matches = 2700 (void *)results->matches; 2701 2702 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1 * 8; i++) 2703 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8))) 2704 match->channels[n_channels++] = 2705 mvm->nd_channels[i]->center_freq; 2706 } 2707 /* We may have ended up with fewer channels than we allocated. */ 2708 match->n_channels = n_channels; 2709 } 2710 2711 /** 2712 * enum iwl_d3_notif - d3 notifications 2713 * @IWL_D3_NOTIF_WOWLAN_INFO: WOWLAN_INFO_NOTIF was received 2714 * @IWL_D3_NOTIF_WOWLAN_WAKE_PKT: WOWLAN_WAKE_PKT_NOTIF was received 2715 * @IWL_D3_NOTIF_PROT_OFFLOAD: PROT_OFFLOAD_NOTIF was received 2716 * @IWL_D3_ND_MATCH_INFO: OFFLOAD_MATCH_INFO_NOTIF was received 2717 * @IWL_D3_NOTIF_D3_END_NOTIF: D3_END_NOTIF was received 2718 */ 2719 enum iwl_d3_notif { 2720 IWL_D3_NOTIF_WOWLAN_INFO = BIT(0), 2721 IWL_D3_NOTIF_WOWLAN_WAKE_PKT = BIT(1), 2722 IWL_D3_NOTIF_PROT_OFFLOAD = BIT(2), 2723 IWL_D3_ND_MATCH_INFO = BIT(3), 2724 IWL_D3_NOTIF_D3_END_NOTIF = BIT(4) 2725 }; 2726 2727 /* manage d3 resume data */ 2728 struct iwl_d3_data { 2729 struct iwl_wowlan_status_data *status; 2730 bool test; 2731 u32 d3_end_flags; 2732 u32 notif_expected; /* bitmap - see &enum iwl_d3_notif */ 2733 u32 notif_received; /* bitmap - see &enum iwl_d3_notif */ 2734 struct iwl_mvm_nd_results *nd_results; 2735 bool nd_results_valid; 2736 }; 2737 2738 static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm, 2739 struct ieee80211_vif *vif, 2740 struct iwl_d3_data *d3_data) 2741 { 2742 struct cfg80211_wowlan_nd_info *net_detect = NULL; 2743 struct cfg80211_wowlan_wakeup wakeup = { 2744 .pattern_idx = -1, 2745 }; 2746 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; 2747 unsigned long matched_profiles; 2748 u32 reasons = 0; 2749 int i, n_matches, ret; 2750 2751 if (WARN_ON(!d3_data || !d3_data->status)) 2752 goto out; 2753 2754 reasons = d3_data->status->wakeup_reasons; 2755 2756 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 2757 wakeup.rfkill_release = true; 2758 2759 if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) 2760 goto out; 2761 2762 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2763 WOWLAN_INFO_NOTIFICATION, 0)) { 2764 IWL_INFO(mvm, "Query FW for ND results\n"); 2765 ret = iwl_mvm_netdetect_query_results(mvm, d3_data->nd_results); 2766 2767 } else { 2768 IWL_INFO(mvm, "Notification based ND results\n"); 2769 ret = d3_data->nd_results_valid ? 0 : -1; 2770 } 2771 2772 if (ret || !d3_data->nd_results->matched_profiles) { 2773 wakeup_report = NULL; 2774 goto out; 2775 } 2776 2777 matched_profiles = d3_data->nd_results->matched_profiles; 2778 if (mvm->n_nd_match_sets) { 2779 n_matches = hweight_long(matched_profiles); 2780 } else { 2781 IWL_ERR(mvm, "no net detect match information available\n"); 2782 n_matches = 0; 2783 } 2784 2785 net_detect = kzalloc(struct_size(net_detect, matches, n_matches), 2786 GFP_KERNEL); 2787 if (!net_detect || !n_matches) 2788 goto out_report_nd; 2789 net_detect->n_matches = n_matches; 2790 n_matches = 0; 2791 2792 for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) { 2793 struct cfg80211_wowlan_nd_match *match; 2794 int idx, n_channels = 0; 2795 2796 n_channels = iwl_mvm_query_num_match_chans(mvm, 2797 d3_data->nd_results, 2798 i); 2799 2800 match = kzalloc(struct_size(match, channels, n_channels), 2801 GFP_KERNEL); 2802 if (!match) 2803 goto out_report_nd; 2804 match->n_channels = n_channels; 2805 2806 net_detect->matches[n_matches++] = match; 2807 2808 /* We inverted the order of the SSIDs in the scan 2809 * request, so invert the index here. 2810 */ 2811 idx = mvm->n_nd_match_sets - i - 1; 2812 match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len; 2813 memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid, 2814 match->ssid.ssid_len); 2815 2816 if (mvm->n_nd_channels < n_channels) 2817 continue; 2818 2819 iwl_mvm_query_set_freqs(mvm, d3_data->nd_results, match, i); 2820 } 2821 /* We may have fewer matches than we allocated. */ 2822 net_detect->n_matches = n_matches; 2823 2824 out_report_nd: 2825 wakeup.net_detect = net_detect; 2826 out: 2827 iwl_mvm_free_nd(mvm); 2828 2829 mutex_unlock(&mvm->mutex); 2830 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); 2831 2832 if (net_detect) { 2833 for (i = 0; i < net_detect->n_matches; i++) 2834 kfree(net_detect->matches[i]); 2835 kfree(net_detect); 2836 } 2837 } 2838 2839 static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac, 2840 struct ieee80211_vif *vif) 2841 { 2842 /* skip the one we keep connection on */ 2843 if (data == vif) 2844 return; 2845 2846 if (vif->type == NL80211_IFTYPE_STATION) 2847 ieee80211_resume_disconnect(vif); 2848 } 2849 2850 enum rt_status { 2851 FW_ALIVE, 2852 FW_NEEDS_RESET, 2853 FW_ERROR, 2854 }; 2855 2856 static enum rt_status iwl_mvm_check_rt_status(struct iwl_mvm *mvm, 2857 struct ieee80211_vif *vif) 2858 { 2859 u32 err_id; 2860 2861 /* check for lmac1 error */ 2862 if (iwl_fwrt_read_err_table(mvm->trans, 2863 mvm->trans->dbg.lmac_error_event_table[0], 2864 &err_id)) { 2865 if (err_id == RF_KILL_INDICATOR_FOR_WOWLAN) { 2866 IWL_WARN(mvm, "Rfkill was toggled during suspend\n"); 2867 if (vif) { 2868 struct cfg80211_wowlan_wakeup wakeup = { 2869 .rfkill_release = true, 2870 }; 2871 2872 ieee80211_report_wowlan_wakeup(vif, &wakeup, 2873 GFP_KERNEL); 2874 } 2875 2876 return FW_NEEDS_RESET; 2877 } 2878 return FW_ERROR; 2879 } 2880 2881 /* check if we have lmac2 set and check for error */ 2882 if (iwl_fwrt_read_err_table(mvm->trans, 2883 mvm->trans->dbg.lmac_error_event_table[1], 2884 NULL)) 2885 return FW_ERROR; 2886 2887 /* check for umac error */ 2888 if (iwl_fwrt_read_err_table(mvm->trans, 2889 mvm->trans->dbg.umac_error_event_table, 2890 NULL)) 2891 return FW_ERROR; 2892 2893 return FW_ALIVE; 2894 } 2895 2896 /* 2897 * This function assumes: 2898 * 1. The mutex is already held. 2899 * 2. The callee functions unlock the mutex. 2900 */ 2901 static bool 2902 iwl_mvm_choose_query_wakeup_reasons(struct iwl_mvm *mvm, 2903 struct ieee80211_vif *vif, 2904 struct iwl_d3_data *d3_data) 2905 { 2906 lockdep_assert_held(&mvm->mutex); 2907 2908 /* if FW uses status notification, status shouldn't be NULL here */ 2909 if (!d3_data->status) { 2910 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2911 u8 sta_id = mvm->net_detect ? IWL_INVALID_STA : 2912 mvmvif->deflink.ap_sta_id; 2913 2914 /* bug - FW with MLO has status notification */ 2915 WARN_ON(ieee80211_vif_is_mld(vif)); 2916 2917 d3_data->status = iwl_mvm_send_wowlan_get_status(mvm, sta_id); 2918 } 2919 2920 if (mvm->net_detect) { 2921 iwl_mvm_query_netdetect_reasons(mvm, vif, d3_data); 2922 } else { 2923 bool keep = iwl_mvm_query_wakeup_reasons(mvm, vif, 2924 d3_data->status); 2925 2926 #ifdef CONFIG_IWLWIFI_DEBUGFS 2927 if (keep) 2928 mvm->keep_vif = vif; 2929 #endif 2930 2931 return keep; 2932 } 2933 return false; 2934 } 2935 2936 #define IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT (IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET | \ 2937 IWL_WOWLAN_WAKEUP_BY_PATTERN | \ 2938 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN |\ 2939 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN_WILDCARD |\ 2940 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN |\ 2941 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN_WILDCARD) 2942 2943 static int iwl_mvm_wowlan_store_wake_pkt(struct iwl_mvm *mvm, 2944 struct iwl_wowlan_wake_pkt_notif *notif, 2945 struct iwl_wowlan_status_data *status, 2946 u32 len) 2947 { 2948 u32 data_size, packet_len = le32_to_cpu(notif->wake_packet_length); 2949 2950 if (len < sizeof(*notif)) { 2951 IWL_ERR(mvm, "Invalid WoWLAN wake packet notification!\n"); 2952 return -EIO; 2953 } 2954 2955 if (WARN_ON(!status)) { 2956 IWL_ERR(mvm, "Got wake packet notification but wowlan status data is NULL\n"); 2957 return -EIO; 2958 } 2959 2960 if (WARN_ON(!(status->wakeup_reasons & 2961 IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT))) { 2962 IWL_ERR(mvm, "Got wakeup packet but wakeup reason is %x\n", 2963 status->wakeup_reasons); 2964 return -EIO; 2965 } 2966 2967 data_size = len - offsetof(struct iwl_wowlan_wake_pkt_notif, wake_packet); 2968 2969 /* data_size got the padding from the notification, remove it. */ 2970 if (packet_len < data_size) 2971 data_size = packet_len; 2972 2973 status->wake_packet = kmemdup(notif->wake_packet, data_size, 2974 GFP_ATOMIC); 2975 2976 if (!status->wake_packet) 2977 return -ENOMEM; 2978 2979 status->wake_packet_length = packet_len; 2980 status->wake_packet_bufsize = data_size; 2981 2982 return 0; 2983 } 2984 2985 static void iwl_mvm_nd_match_info_handler(struct iwl_mvm *mvm, 2986 struct iwl_d3_data *d3_data, 2987 struct iwl_scan_offload_match_info *notif, 2988 u32 len) 2989 { 2990 struct iwl_wowlan_status_data *status = d3_data->status; 2991 struct ieee80211_vif *vif = iwl_mvm_get_bss_vif(mvm); 2992 struct iwl_mvm_nd_results *results = d3_data->nd_results; 2993 size_t i, matches_len = sizeof(struct iwl_scan_offload_profile_match) * 2994 iwl_umac_scan_get_max_profiles(mvm->fw); 2995 2996 if (IS_ERR_OR_NULL(vif)) 2997 return; 2998 2999 if (len < sizeof(struct iwl_scan_offload_match_info)) { 3000 IWL_ERR(mvm, "Invalid scan match info notification\n"); 3001 return; 3002 } 3003 3004 if (!mvm->net_detect) { 3005 IWL_ERR(mvm, "Unexpected scan match info notification\n"); 3006 return; 3007 } 3008 3009 if (!status || status->wakeup_reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) { 3010 IWL_ERR(mvm, 3011 "Ignore scan match info notification: no reason\n"); 3012 return; 3013 } 3014 3015 #ifdef CONFIG_IWLWIFI_DEBUGFS 3016 mvm->last_netdetect_scans = le32_to_cpu(notif->n_scans_done); 3017 #endif 3018 3019 results->matched_profiles = le32_to_cpu(notif->matched_profiles); 3020 IWL_INFO(mvm, "number of matched profiles=%u\n", 3021 results->matched_profiles); 3022 3023 if (results->matched_profiles) { 3024 memcpy(results->matches, notif->matches, matches_len); 3025 d3_data->nd_results_valid = true; 3026 } 3027 3028 /* no scan should be active at this point */ 3029 mvm->scan_status = 0; 3030 for (i = 0; i < mvm->max_scans; i++) 3031 mvm->scan_uid_status[i] = 0; 3032 } 3033 3034 static bool iwl_mvm_wait_d3_notif(struct iwl_notif_wait_data *notif_wait, 3035 struct iwl_rx_packet *pkt, void *data) 3036 { 3037 struct iwl_mvm *mvm = 3038 container_of(notif_wait, struct iwl_mvm, notif_wait); 3039 struct iwl_d3_data *d3_data = data; 3040 u32 len = iwl_rx_packet_payload_len(pkt); 3041 int ret; 3042 int wowlan_info_ver = iwl_fw_lookup_notif_ver(mvm->fw, 3043 PROT_OFFLOAD_GROUP, 3044 WOWLAN_INFO_NOTIFICATION, 3045 IWL_FW_CMD_VER_UNKNOWN); 3046 3047 3048 switch (WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) { 3049 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION): { 3050 3051 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_INFO) { 3052 /* We might get two notifications due to dual bss */ 3053 IWL_DEBUG_WOWLAN(mvm, 3054 "Got additional wowlan info notification\n"); 3055 break; 3056 } 3057 3058 if (wowlan_info_ver == 1) { 3059 struct iwl_wowlan_info_notif_v1 *notif_v1 = 3060 (void *)pkt->data; 3061 3062 iwl_mvm_parse_wowlan_info_notif_v1(mvm, notif_v1, 3063 d3_data->status, 3064 len); 3065 } else if (wowlan_info_ver == 3) { 3066 struct iwl_wowlan_info_notif_v3 *notif = 3067 (void *)pkt->data; 3068 3069 iwl_mvm_parse_wowlan_info_notif_v3(mvm, notif, 3070 d3_data->status, len); 3071 } else if (wowlan_info_ver == 5) { 3072 struct iwl_wowlan_info_notif *notif = 3073 (void *)pkt->data; 3074 3075 iwl_mvm_parse_wowlan_info_notif(mvm, notif, 3076 d3_data->status, len); 3077 } else { 3078 IWL_FW_CHECK(mvm, 1, 3079 "Firmware advertises unknown WoWLAN info notification %d!\n", 3080 wowlan_info_ver); 3081 return false; 3082 } 3083 3084 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_INFO; 3085 3086 if (d3_data->status && 3087 d3_data->status->wakeup_reasons & IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT) 3088 /* We are supposed to get also wake packet notif */ 3089 d3_data->notif_expected |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT; 3090 3091 break; 3092 } 3093 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION): { 3094 struct iwl_wowlan_wake_pkt_notif *notif = (void *)pkt->data; 3095 3096 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_WAKE_PKT) { 3097 /* We shouldn't get two wake packet notifications */ 3098 IWL_ERR(mvm, 3099 "Got additional wowlan wake packet notification\n"); 3100 } else { 3101 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT; 3102 len = iwl_rx_packet_payload_len(pkt); 3103 ret = iwl_mvm_wowlan_store_wake_pkt(mvm, notif, 3104 d3_data->status, 3105 len); 3106 if (ret) 3107 IWL_ERR(mvm, 3108 "Can't parse WOWLAN_WAKE_PKT_NOTIFICATION\n"); 3109 } 3110 3111 break; 3112 } 3113 case WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF): { 3114 struct iwl_scan_offload_match_info *notif = (void *)pkt->data; 3115 3116 if (d3_data->notif_received & IWL_D3_ND_MATCH_INFO) { 3117 IWL_ERR(mvm, 3118 "Got additional netdetect match info\n"); 3119 break; 3120 } 3121 3122 d3_data->notif_received |= IWL_D3_ND_MATCH_INFO; 3123 3124 /* explicitly set this in the 'expected' as well */ 3125 d3_data->notif_expected |= IWL_D3_ND_MATCH_INFO; 3126 3127 len = iwl_rx_packet_payload_len(pkt); 3128 iwl_mvm_nd_match_info_handler(mvm, d3_data, notif, len); 3129 break; 3130 } 3131 case WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION): { 3132 struct iwl_d3_end_notif *notif = (void *)pkt->data; 3133 3134 d3_data->d3_end_flags = __le32_to_cpu(notif->flags); 3135 d3_data->notif_received |= IWL_D3_NOTIF_D3_END_NOTIF; 3136 3137 break; 3138 } 3139 default: 3140 WARN_ON(1); 3141 } 3142 3143 return d3_data->notif_received == d3_data->notif_expected; 3144 } 3145 3146 static int iwl_mvm_resume_firmware(struct iwl_mvm *mvm, bool test) 3147 { 3148 int ret; 3149 enum iwl_d3_status d3_status; 3150 struct iwl_host_cmd cmd = { 3151 .id = D0I3_END_CMD, 3152 .flags = CMD_WANT_SKB, 3153 }; 3154 bool reset = fw_has_capa(&mvm->fw->ucode_capa, 3155 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 3156 3157 ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, !reset); 3158 if (ret) 3159 return ret; 3160 3161 if (d3_status != IWL_D3_STATUS_ALIVE) { 3162 IWL_INFO(mvm, "Device was reset during suspend\n"); 3163 return -ENOENT; 3164 } 3165 3166 /* 3167 * We should trigger resume flow using command only for 22000 family 3168 * AX210 and above don't need the command since they have 3169 * the doorbell interrupt. 3170 */ 3171 if (mvm->trans->mac_cfg->device_family <= IWL_DEVICE_FAMILY_22000 && 3172 fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_D0I3_END_FIRST)) { 3173 ret = iwl_mvm_send_cmd(mvm, &cmd); 3174 if (ret < 0) 3175 IWL_ERR(mvm, "Failed to send D0I3_END_CMD first (%d)\n", 3176 ret); 3177 } 3178 3179 return ret; 3180 } 3181 3182 #define IWL_MVM_D3_NOTIF_TIMEOUT (HZ / 3) 3183 3184 static int iwl_mvm_d3_notif_wait(struct iwl_mvm *mvm, 3185 struct iwl_d3_data *d3_data) 3186 { 3187 static const u16 d3_resume_notif[] = { 3188 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION), 3189 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION), 3190 WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF), 3191 WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION) 3192 }; 3193 static const u16 d3_fast_resume_notif[] = { 3194 WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION) 3195 }; 3196 struct iwl_notification_wait wait_d3_notif; 3197 int ret; 3198 3199 if (mvm->fast_resume) 3200 iwl_init_notification_wait(&mvm->notif_wait, &wait_d3_notif, 3201 d3_fast_resume_notif, 3202 ARRAY_SIZE(d3_fast_resume_notif), 3203 iwl_mvm_wait_d3_notif, d3_data); 3204 else 3205 iwl_init_notification_wait(&mvm->notif_wait, &wait_d3_notif, 3206 d3_resume_notif, 3207 ARRAY_SIZE(d3_resume_notif), 3208 iwl_mvm_wait_d3_notif, d3_data); 3209 3210 ret = iwl_mvm_resume_firmware(mvm, d3_data->test); 3211 if (ret) { 3212 iwl_remove_notification(&mvm->notif_wait, &wait_d3_notif); 3213 return ret; 3214 } 3215 3216 return iwl_wait_notification(&mvm->notif_wait, &wait_d3_notif, 3217 IWL_MVM_D3_NOTIF_TIMEOUT); 3218 } 3219 3220 static inline bool iwl_mvm_d3_resume_notif_based(struct iwl_mvm *mvm) 3221 { 3222 return iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3223 WOWLAN_INFO_NOTIFICATION, 0) && 3224 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3225 WOWLAN_WAKE_PKT_NOTIFICATION, 0) && 3226 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3227 D3_END_NOTIFICATION, 0); 3228 } 3229 3230 static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test) 3231 { 3232 struct ieee80211_vif *vif = NULL; 3233 int ret = 1; 3234 struct iwl_mvm_nd_results results = {}; 3235 struct iwl_d3_data d3_data = { 3236 .test = test, 3237 .notif_expected = 3238 IWL_D3_NOTIF_WOWLAN_INFO | 3239 IWL_D3_NOTIF_D3_END_NOTIF, 3240 .nd_results_valid = false, 3241 .nd_results = &results, 3242 }; 3243 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 3244 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 3245 bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa, 3246 IWL_UCODE_TLV_CAPA_D0I3_END_FIRST); 3247 bool resume_notif_based = iwl_mvm_d3_resume_notif_based(mvm); 3248 enum rt_status rt_status; 3249 bool keep = false; 3250 3251 mutex_lock(&mvm->mutex); 3252 3253 /* Apparently, the device went away and device_powered_off() was called, 3254 * don't even try to read the rt_status, the device is currently 3255 * inaccessible. 3256 */ 3257 if (!test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) { 3258 IWL_INFO(mvm, 3259 "Can't resume, device_powered_off() was called during wowlan\n"); 3260 goto err; 3261 } 3262 3263 mvm->last_reset_or_resume_time_jiffies = jiffies; 3264 3265 /* get the BSS vif pointer again */ 3266 vif = iwl_mvm_get_bss_vif(mvm); 3267 if (IS_ERR_OR_NULL(vif)) 3268 goto err; 3269 3270 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt); 3271 3272 rt_status = iwl_mvm_check_rt_status(mvm, vif); 3273 if (rt_status != FW_ALIVE) { 3274 set_bit(STATUS_FW_ERROR, &mvm->trans->status); 3275 if (rt_status == FW_ERROR) { 3276 IWL_ERR(mvm, "FW Error occurred during suspend. Restarting.\n"); 3277 iwl_mvm_dump_nic_error_log(mvm); 3278 iwl_dbg_tlv_time_point(&mvm->fwrt, 3279 IWL_FW_INI_TIME_POINT_FW_ASSERT, 3280 NULL); 3281 iwl_fw_dbg_collect_desc(&mvm->fwrt, 3282 &iwl_dump_desc_assert, 3283 false, 0); 3284 } 3285 ret = 1; 3286 goto err; 3287 } 3288 3289 if (resume_notif_based) { 3290 d3_data.status = kzalloc(sizeof(*d3_data.status), GFP_KERNEL); 3291 if (!d3_data.status) { 3292 IWL_ERR(mvm, "Failed to allocate wowlan status\n"); 3293 ret = -ENOMEM; 3294 goto err; 3295 } 3296 3297 ret = iwl_mvm_d3_notif_wait(mvm, &d3_data); 3298 if (ret) 3299 goto err; 3300 } else { 3301 ret = iwl_mvm_resume_firmware(mvm, test); 3302 if (ret < 0) 3303 goto err; 3304 } 3305 3306 iwl_mvm_unblock_esr(mvm, vif, IWL_MVM_ESR_BLOCKED_WOWLAN); 3307 3308 /* when reset is required we can't send these following commands */ 3309 if (d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE) 3310 goto query_wakeup_reasons; 3311 3312 /* 3313 * Query the current location and source from the D3 firmware so we 3314 * can play it back when we re-intiailize the D0 firmware 3315 */ 3316 iwl_mvm_update_changed_regdom(mvm); 3317 3318 /* Re-configure PPAG settings */ 3319 iwl_mvm_ppag_send_cmd(mvm); 3320 3321 if (!unified_image) 3322 /* Re-configure default SAR profile */ 3323 iwl_mvm_sar_select_profile(mvm, 1, 1); 3324 3325 if (mvm->net_detect && unified_image) { 3326 /* If this is a non-unified image, we restart the FW, 3327 * so no need to stop the netdetect scan. If that 3328 * fails, continue and try to get the wake-up reasons, 3329 * but trigger a HW restart by keeping a failure code 3330 * in ret. 3331 */ 3332 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT, 3333 false); 3334 } 3335 3336 query_wakeup_reasons: 3337 keep = iwl_mvm_choose_query_wakeup_reasons(mvm, vif, &d3_data); 3338 /* has unlocked the mutex, so skip that */ 3339 goto out; 3340 3341 err: 3342 mutex_unlock(&mvm->mutex); 3343 out: 3344 if (d3_data.status) 3345 kfree(d3_data.status->wake_packet); 3346 kfree(d3_data.status); 3347 iwl_mvm_free_nd(mvm); 3348 3349 if (!d3_data.test && !mvm->net_detect) 3350 ieee80211_iterate_active_interfaces_mtx(mvm->hw, 3351 IEEE80211_IFACE_ITER_NORMAL, 3352 iwl_mvm_d3_disconnect_iter, 3353 keep ? vif : NULL); 3354 3355 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 3356 3357 /* no need to reset the device in unified images, if successful */ 3358 if (unified_image && !ret) { 3359 /* nothing else to do if we already sent D0I3_END_CMD */ 3360 if (d0i3_first) 3361 return 0; 3362 3363 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3364 D3_END_NOTIFICATION, 0)) { 3365 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL); 3366 if (!ret) 3367 return 0; 3368 } else if (!(d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)) { 3369 return 0; 3370 } 3371 } 3372 3373 /* 3374 * Reconfigure the device in one of the following cases: 3375 * 1. We are not using a unified image 3376 * 2. We are using a unified image but had an error while exiting D3 3377 */ 3378 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); 3379 3380 return 1; 3381 } 3382 3383 int iwl_mvm_resume(struct ieee80211_hw *hw) 3384 { 3385 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3386 int ret; 3387 3388 ret = __iwl_mvm_resume(mvm, false); 3389 3390 iwl_mvm_resume_tcm(mvm); 3391 3392 iwl_fw_runtime_resume(&mvm->fwrt); 3393 3394 return ret; 3395 } 3396 3397 void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled) 3398 { 3399 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3400 3401 device_set_wakeup_enable(mvm->trans->dev, enabled); 3402 } 3403 3404 void iwl_mvm_fast_suspend(struct iwl_mvm *mvm) 3405 { 3406 struct iwl_d3_manager_config d3_cfg_cmd_data = {}; 3407 int ret; 3408 3409 lockdep_assert_held(&mvm->mutex); 3410 3411 IWL_DEBUG_WOWLAN(mvm, "Starting fast suspend flow\n"); 3412 3413 mvm->fast_resume = true; 3414 set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 3415 3416 WARN_ON(iwl_mvm_power_update_device(mvm)); 3417 ret = iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD, 0, 3418 sizeof(d3_cfg_cmd_data), &d3_cfg_cmd_data); 3419 if (ret) 3420 IWL_ERR(mvm, 3421 "fast suspend: couldn't send D3_CONFIG_CMD %d\n", ret); 3422 3423 ret = iwl_trans_d3_suspend(mvm->trans, false, false); 3424 if (ret) 3425 IWL_ERR(mvm, "fast suspend: trans_d3_suspend failed %d\n", ret); 3426 } 3427 3428 int iwl_mvm_fast_resume(struct iwl_mvm *mvm) 3429 { 3430 struct iwl_d3_data d3_data = { 3431 .notif_expected = 3432 IWL_D3_NOTIF_D3_END_NOTIF, 3433 }; 3434 enum rt_status rt_status; 3435 int ret; 3436 3437 lockdep_assert_held(&mvm->mutex); 3438 3439 IWL_DEBUG_WOWLAN(mvm, "Starting the fast resume flow\n"); 3440 3441 mvm->last_reset_or_resume_time_jiffies = jiffies; 3442 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt); 3443 3444 rt_status = iwl_mvm_check_rt_status(mvm, NULL); 3445 if (rt_status != FW_ALIVE) { 3446 set_bit(STATUS_FW_ERROR, &mvm->trans->status); 3447 if (rt_status == FW_ERROR) { 3448 IWL_ERR(mvm, 3449 "iwl_mvm_check_rt_status failed, device is gone during suspend\n"); 3450 iwl_mvm_dump_nic_error_log(mvm); 3451 iwl_dbg_tlv_time_point(&mvm->fwrt, 3452 IWL_FW_INI_TIME_POINT_FW_ASSERT, 3453 NULL); 3454 iwl_fw_dbg_collect_desc(&mvm->fwrt, 3455 &iwl_dump_desc_assert, 3456 false, 0); 3457 } 3458 mvm->trans->state = IWL_TRANS_NO_FW; 3459 ret = -ENODEV; 3460 3461 goto out; 3462 } 3463 ret = iwl_mvm_d3_notif_wait(mvm, &d3_data); 3464 3465 if (ret) { 3466 IWL_ERR(mvm, "Couldn't get the d3 notif %d\n", ret); 3467 mvm->trans->state = IWL_TRANS_NO_FW; 3468 } 3469 3470 out: 3471 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 3472 mvm->fast_resume = false; 3473 3474 return ret; 3475 } 3476 3477 #ifdef CONFIG_IWLWIFI_DEBUGFS 3478 static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file) 3479 { 3480 struct iwl_mvm *mvm = inode->i_private; 3481 int err; 3482 3483 if (mvm->d3_test_active) 3484 return -EBUSY; 3485 3486 file->private_data = inode->i_private; 3487 3488 iwl_mvm_pause_tcm(mvm, true); 3489 3490 iwl_fw_runtime_suspend(&mvm->fwrt); 3491 3492 /* start pseudo D3 */ 3493 rtnl_lock(); 3494 wiphy_lock(mvm->hw->wiphy); 3495 err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true); 3496 wiphy_unlock(mvm->hw->wiphy); 3497 rtnl_unlock(); 3498 if (err > 0) 3499 err = -EINVAL; 3500 if (err) 3501 return err; 3502 3503 mvm->d3_test_active = true; 3504 mvm->keep_vif = NULL; 3505 return 0; 3506 } 3507 3508 static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf, 3509 size_t count, loff_t *ppos) 3510 { 3511 struct iwl_mvm *mvm = file->private_data; 3512 unsigned long end = jiffies + 60 * HZ; 3513 u32 pme_asserted; 3514 3515 while (true) { 3516 /* read pme_ptr if available */ 3517 if (mvm->d3_test_pme_ptr) { 3518 pme_asserted = iwl_trans_read_mem32(mvm->trans, 3519 mvm->d3_test_pme_ptr); 3520 if (pme_asserted) 3521 break; 3522 } 3523 3524 if (msleep_interruptible(100)) 3525 break; 3526 3527 if (time_is_before_jiffies(end)) { 3528 IWL_ERR(mvm, 3529 "ending pseudo-D3 with timeout after ~60 seconds\n"); 3530 return -ETIMEDOUT; 3531 } 3532 } 3533 3534 return 0; 3535 } 3536 3537 static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac, 3538 struct ieee80211_vif *vif) 3539 { 3540 /* skip the one we keep connection on */ 3541 if (_data == vif) 3542 return; 3543 3544 if (vif->type == NL80211_IFTYPE_STATION) 3545 ieee80211_connection_loss(vif); 3546 } 3547 3548 static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file) 3549 { 3550 struct iwl_mvm *mvm = inode->i_private; 3551 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 3552 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 3553 3554 mvm->d3_test_active = false; 3555 3556 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt); 3557 3558 rtnl_lock(); 3559 wiphy_lock(mvm->hw->wiphy); 3560 __iwl_mvm_resume(mvm, true); 3561 wiphy_unlock(mvm->hw->wiphy); 3562 rtnl_unlock(); 3563 3564 iwl_mvm_resume_tcm(mvm); 3565 3566 iwl_fw_runtime_resume(&mvm->fwrt); 3567 3568 iwl_abort_notification_waits(&mvm->notif_wait); 3569 if (!unified_image) { 3570 int remaining_time = 10; 3571 3572 ieee80211_restart_hw(mvm->hw); 3573 3574 /* wait for restart and disconnect all interfaces */ 3575 while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 3576 remaining_time > 0) { 3577 remaining_time--; 3578 msleep(1000); 3579 } 3580 3581 if (remaining_time == 0) 3582 IWL_ERR(mvm, "Timed out waiting for HW restart!\n"); 3583 } 3584 3585 ieee80211_iterate_active_interfaces_atomic( 3586 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 3587 iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif); 3588 3589 return 0; 3590 } 3591 3592 const struct file_operations iwl_dbgfs_d3_test_ops = { 3593 .open = iwl_mvm_d3_test_open, 3594 .read = iwl_mvm_d3_test_read, 3595 .release = iwl_mvm_d3_test_release, 3596 }; 3597 #endif 3598