1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2014, 2018-2026 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 return -EINVAL; 731 732 /* add back the PHY */ 733 if (WARN_ON(!mvmvif->deflink.phy_ctxt)) 734 return -EINVAL; 735 736 rcu_read_lock(); 737 ctx = rcu_dereference(vif->bss_conf.chanctx_conf); 738 if (WARN_ON(!ctx)) { 739 rcu_read_unlock(); 740 return -EINVAL; 741 } 742 chandef = ctx->def; 743 ap_def = ctx->ap; 744 chains_static = ctx->rx_chains_static; 745 chains_dynamic = ctx->rx_chains_dynamic; 746 rcu_read_unlock(); 747 748 ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->deflink.phy_ctxt, &chandef, 749 &ap_def, chains_static, chains_dynamic); 750 if (ret) 751 return ret; 752 753 /* add back the MAC */ 754 mvmvif->uploaded = false; 755 756 if (WARN_ON(!vif->cfg.assoc)) 757 return -EINVAL; 758 759 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 760 if (ret) 761 return ret; 762 763 /* add back binding - XXX refactor? */ 764 binding_cmd.id_and_color = 765 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id, 766 mvmvif->deflink.phy_ctxt->color)); 767 binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD); 768 binding_cmd.phy = 769 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id, 770 mvmvif->deflink.phy_ctxt->color)); 771 binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 772 mvmvif->color)); 773 for (i = 1; i < MAX_MACS_IN_BINDING; i++) 774 binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID); 775 776 status = 0; 777 ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD, 778 IWL_BINDING_CMD_SIZE_V1, &binding_cmd, 779 &status); 780 if (ret) { 781 IWL_ERR(mvm, "Failed to add binding: %d\n", ret); 782 return ret; 783 } 784 785 if (status) { 786 IWL_ERR(mvm, "Binding command failed: %u\n", status); 787 return -EIO; 788 } 789 790 ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false, 0); 791 if (ret) 792 return ret; 793 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->deflink.ap_sta_id], 794 ap_sta); 795 796 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 797 if (ret) 798 return ret; 799 800 /* and some quota */ 801 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, 0); 802 quota->id_and_color = 803 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id, 804 mvmvif->deflink.phy_ctxt->color)); 805 quota->quota = cpu_to_le32(IWL_MVM_MAX_QUOTA); 806 quota->max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA); 807 808 for (i = 1; i < MAX_BINDINGS; i++) { 809 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, i); 810 quota->id_and_color = cpu_to_le32(FW_CTXT_INVALID); 811 } 812 813 ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0, 814 iwl_mvm_quota_cmd_size(mvm), "a_cmd); 815 if (ret) 816 IWL_ERR(mvm, "Failed to send quota: %d\n", ret); 817 818 if (iwl_mvm_is_lar_supported(mvm) && iwl_mvm_init_fw_regd(mvm, false)) 819 IWL_ERR(mvm, "Failed to initialize D3 LAR information\n"); 820 821 return 0; 822 } 823 824 static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm, 825 struct ieee80211_vif *vif) 826 { 827 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 828 struct iwl_nonqos_seq_query_cmd query_cmd = { 829 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET), 830 .mac_id_n_color = 831 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 832 mvmvif->color)), 833 }; 834 struct iwl_host_cmd cmd = { 835 .id = NON_QOS_TX_COUNTER_CMD, 836 .flags = CMD_WANT_SKB, 837 }; 838 int err; 839 u32 size; 840 841 cmd.data[0] = &query_cmd; 842 cmd.len[0] = sizeof(query_cmd); 843 844 err = iwl_mvm_send_cmd(mvm, &cmd); 845 if (err) 846 return err; 847 848 size = iwl_rx_packet_payload_len(cmd.resp_pkt); 849 if (size < sizeof(__le16)) { 850 err = -EINVAL; 851 } else { 852 err = le16_to_cpup((__le16 *)cmd.resp_pkt->data); 853 /* firmware returns next, not last-used seqno */ 854 err = (u16) (err - 0x10); 855 } 856 857 iwl_free_resp(&cmd); 858 return err; 859 } 860 861 void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 862 { 863 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 864 struct iwl_nonqos_seq_query_cmd query_cmd = { 865 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET), 866 .mac_id_n_color = 867 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 868 mvmvif->color)), 869 .value = cpu_to_le16(mvmvif->seqno), 870 }; 871 872 /* return if called during restart, not resume from D3 */ 873 if (!mvmvif->seqno_valid) 874 return; 875 876 mvmvif->seqno_valid = false; 877 878 if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0, 879 sizeof(query_cmd), &query_cmd)) 880 IWL_ERR(mvm, "failed to set non-QoS seqno\n"); 881 } 882 883 static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm) 884 { 885 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 886 887 iwl_mvm_stop_device(mvm); 888 /* 889 * Set the HW restart bit -- this is mostly true as we're 890 * going to load new firmware and reprogram that, though 891 * the reprogramming is going to be manual to avoid adding 892 * all the MACs that aren't support. 893 * We don't have to clear up everything though because the 894 * reprogramming is manual. When we resume, we'll actually 895 * go through a proper restart sequence again to switch 896 * back to the runtime firmware image. 897 */ 898 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 899 900 /* the fw is reset, so all the keys are cleared */ 901 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); 902 903 mvm->ptk_ivlen = 0; 904 mvm->ptk_icvlen = 0; 905 mvm->ptk_ivlen = 0; 906 mvm->ptk_icvlen = 0; 907 908 return iwl_mvm_load_d3_fw(mvm); 909 } 910 911 static int 912 iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm, 913 struct cfg80211_wowlan *wowlan, 914 struct iwl_wowlan_config_cmd_v6 *wowlan_config_cmd, 915 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif, 916 struct ieee80211_sta *ap_sta) 917 { 918 struct iwl_mvm_sta *mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta); 919 920 /* TODO: wowlan_config_cmd->wowlan_ba_teardown_tids */ 921 922 wowlan_config_cmd->is_11n_connection = 923 ap_sta->deflink.ht_cap.ht_supported; 924 wowlan_config_cmd->flags = ENABLE_L3_FILTERING | 925 ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING; 926 927 if (ap_sta->mfp) 928 wowlan_config_cmd->flags |= IS_11W_ASSOC; 929 930 if (rcu_access_pointer(mvmvif->bcn_prot.keys[0]) || 931 rcu_access_pointer(mvmvif->bcn_prot.keys[1])) 932 wowlan_config_cmd->flags |= HAS_BEACON_PROTECTION; 933 934 if (iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_CONFIGURATION, 0) < 6) { 935 /* Query the last used seqno and set it */ 936 int ret = iwl_mvm_get_last_nonqos_seq(mvm, vif); 937 938 if (ret < 0) 939 return ret; 940 941 wowlan_config_cmd->non_qos_seq = cpu_to_le16(ret); 942 } 943 944 if (iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_CONFIGURATION, 0) < 7) 945 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, wowlan_config_cmd); 946 947 if (wowlan->disconnect) 948 wowlan_config_cmd->wakeup_filter |= 949 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS | 950 IWL_WOWLAN_WAKEUP_LINK_CHANGE); 951 if (wowlan->magic_pkt) 952 wowlan_config_cmd->wakeup_filter |= 953 cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET); 954 if (wowlan->gtk_rekey_failure) 955 wowlan_config_cmd->wakeup_filter |= 956 cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL); 957 if (wowlan->eap_identity_req) 958 wowlan_config_cmd->wakeup_filter |= 959 cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ); 960 if (wowlan->four_way_handshake) 961 wowlan_config_cmd->wakeup_filter |= 962 cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE); 963 if (wowlan->n_patterns) 964 wowlan_config_cmd->wakeup_filter |= 965 cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH); 966 967 if (wowlan->rfkill_release) 968 wowlan_config_cmd->wakeup_filter |= 969 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT); 970 971 if (wowlan->tcp) { 972 /* 973 * Set the "link change" (really "link lost") flag as well 974 * since that implies losing the TCP connection. 975 */ 976 wowlan_config_cmd->wakeup_filter |= 977 cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS | 978 IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE | 979 IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET | 980 IWL_WOWLAN_WAKEUP_LINK_CHANGE); 981 } 982 983 if (wowlan->any) { 984 wowlan_config_cmd->wakeup_filter |= 985 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS | 986 IWL_WOWLAN_WAKEUP_LINK_CHANGE | 987 IWL_WOWLAN_WAKEUP_RX_FRAME | 988 IWL_WOWLAN_WAKEUP_BCN_FILTERING); 989 } 990 991 return 0; 992 } 993 994 static int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm, 995 struct ieee80211_vif *vif, 996 struct iwl_mvm_vif_link_info *mvm_link) 997 { 998 bool unified = fw_has_capa(&mvm->fw->ucode_capa, 999 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1000 struct wowlan_key_reprogram_data key_data = {}; 1001 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1002 int ret; 1003 u8 cmd_ver; 1004 size_t cmd_size; 1005 1006 if (!unified) { 1007 /* 1008 * if we have to configure keys, call ieee80211_iter_keys(), 1009 * as we need non-atomic context in order to take the 1010 * required locks. 1011 */ 1012 /* 1013 * Note that currently we don't use CMD_ASYNC in the iterator. 1014 * In case of key_data.configure_keys, all the configured 1015 * commands are SYNC, and iwl_mvm_wowlan_program_keys() will 1016 * take care of locking/unlocking mvm->mutex. 1017 */ 1018 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_program_keys, 1019 &key_data); 1020 1021 if (key_data.error) 1022 return -EIO; 1023 } 1024 1025 ret = iwl_mvm_wowlan_config_rsc_tsc(mvm, vif, mvm_link); 1026 if (ret) 1027 return ret; 1028 1029 if (!fw_has_api(&mvm->fw->ucode_capa, 1030 IWL_UCODE_TLV_API_TKIP_MIC_KEYS)) { 1031 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TKIP_PARAM, 1032 IWL_FW_CMD_VER_UNKNOWN); 1033 struct wowlan_key_tkip_data tkip_data = {}; 1034 int size; 1035 1036 if (ver == 2) { 1037 size = sizeof(tkip_data.tkip); 1038 tkip_data.tkip.sta_id = 1039 cpu_to_le32(mvm_link->ap_sta_id); 1040 } else if (ver == 1 || ver == IWL_FW_CMD_VER_UNKNOWN) { 1041 size = sizeof(struct iwl_wowlan_tkip_params_cmd_ver_1); 1042 } else { 1043 WARN_ON_ONCE(1); 1044 return -EINVAL; 1045 } 1046 1047 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_get_tkip_data, 1048 &tkip_data); 1049 1050 if (tkip_data.have_tkip_keys) { 1051 /* send relevant data according to CMD version */ 1052 ret = iwl_mvm_send_cmd_pdu(mvm, 1053 WOWLAN_TKIP_PARAM, 1054 CMD_ASYNC, size, 1055 &tkip_data.tkip); 1056 if (ret) 1057 return ret; 1058 } 1059 } 1060 1061 /* configure rekey data only if offloaded rekey is supported (d3) */ 1062 if (mvmvif->rekey_data.valid) { 1063 struct iwl_wowlan_kek_kck_material_cmd_v4 kek_kck_cmd = {}; 1064 struct iwl_wowlan_kek_kck_material_cmd_v4 *_kek_kck_cmd = 1065 &kek_kck_cmd; 1066 struct wowlan_key_gtk_type_iter gtk_type_data = { 1067 .kek_kck_cmd = _kek_kck_cmd, 1068 }; 1069 1070 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, 1071 WOWLAN_KEK_KCK_MATERIAL, 1072 IWL_FW_CMD_VER_UNKNOWN); 1073 if (WARN_ON(cmd_ver != 2 && cmd_ver != 3 && cmd_ver != 4 && 1074 cmd_ver != IWL_FW_CMD_VER_UNKNOWN)) 1075 return -EINVAL; 1076 1077 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_gtk_type_iter, 1078 >k_type_data); 1079 1080 memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck, 1081 mvmvif->rekey_data.kck_len); 1082 kek_kck_cmd.kck_len = cpu_to_le16(mvmvif->rekey_data.kck_len); 1083 memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek, 1084 mvmvif->rekey_data.kek_len); 1085 kek_kck_cmd.kek_len = cpu_to_le16(mvmvif->rekey_data.kek_len); 1086 kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr; 1087 kek_kck_cmd.akm = cpu_to_le32(mvmvif->rekey_data.akm); 1088 kek_kck_cmd.sta_id = cpu_to_le32(mvm_link->ap_sta_id); 1089 1090 if (cmd_ver == 4) { 1091 cmd_size = sizeof(struct iwl_wowlan_kek_kck_material_cmd_v4); 1092 } else { 1093 if (cmd_ver == 3) 1094 cmd_size = 1095 sizeof(struct iwl_wowlan_kek_kck_material_cmd_v3); 1096 else 1097 cmd_size = 1098 sizeof(struct iwl_wowlan_kek_kck_material_cmd_v2); 1099 /* skip the sta_id at the beginning */ 1100 _kek_kck_cmd = (void *) 1101 ((u8 *)_kek_kck_cmd + sizeof(kek_kck_cmd.sta_id)); 1102 } 1103 1104 IWL_DEBUG_WOWLAN(mvm, "setting akm %d\n", 1105 mvmvif->rekey_data.akm); 1106 1107 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_KEK_KCK_MATERIAL, 1108 CMD_ASYNC, cmd_size, _kek_kck_cmd); 1109 if (ret) 1110 return ret; 1111 } 1112 1113 return 0; 1114 } 1115 1116 static int 1117 iwl_mvm_wowlan_config(struct iwl_mvm *mvm, 1118 struct cfg80211_wowlan *wowlan, 1119 struct iwl_wowlan_config_cmd_v6 *wowlan_config_cmd_v6, 1120 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif, 1121 struct iwl_mvm_vif_link_info *mvm_link, 1122 struct ieee80211_sta *ap_sta) 1123 { 1124 int ret; 1125 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 1126 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1127 1128 mvm->offload_tid = wowlan_config_cmd_v6->offloading_tid; 1129 1130 if (!unified_image) { 1131 ret = iwl_mvm_switch_to_d3(mvm); 1132 if (ret) 1133 return ret; 1134 1135 ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta); 1136 if (ret) 1137 return ret; 1138 } 1139 1140 ret = iwl_mvm_wowlan_config_key_params(mvm, vif, mvm_link); 1141 if (ret) 1142 return ret; 1143 1144 if (iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_CONFIGURATION, 0) > 6) { 1145 struct iwl_wowlan_config_cmd wowlan_config_cmd = { 1146 .wakeup_filter = wowlan_config_cmd_v6->wakeup_filter, 1147 .wowlan_ba_teardown_tids = 1148 wowlan_config_cmd_v6->wowlan_ba_teardown_tids, 1149 .is_11n_connection = 1150 wowlan_config_cmd_v6->is_11n_connection, 1151 .offloading_tid = wowlan_config_cmd_v6->offloading_tid, 1152 .flags = wowlan_config_cmd_v6->flags, 1153 .sta_id = wowlan_config_cmd_v6->sta_id, 1154 }; 1155 1156 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0, 1157 sizeof(wowlan_config_cmd), 1158 &wowlan_config_cmd); 1159 } else { 1160 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0, 1161 sizeof(*wowlan_config_cmd_v6), 1162 wowlan_config_cmd_v6); 1163 } 1164 if (ret) 1165 return ret; 1166 1167 if (fw_has_api(&mvm->fw->ucode_capa, 1168 IWL_UCODE_TLV_API_WOWLAN_TCP_SYN_WAKE)) 1169 ret = iwl_mvm_send_patterns(mvm, mvm_link, wowlan); 1170 else 1171 ret = iwl_mvm_send_patterns_v1(mvm, wowlan); 1172 if (ret) 1173 return ret; 1174 1175 return iwl_mvm_send_proto_offload(mvm, vif, false, true, 0, 1176 mvm_link->ap_sta_id); 1177 } 1178 1179 static int 1180 iwl_mvm_netdetect_config(struct iwl_mvm *mvm, 1181 struct cfg80211_wowlan *wowlan, 1182 struct cfg80211_sched_scan_request *nd_config, 1183 struct ieee80211_vif *vif) 1184 { 1185 int ret; 1186 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 1187 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1188 1189 if (!unified_image) { 1190 ret = iwl_mvm_switch_to_d3(mvm); 1191 if (ret) 1192 return ret; 1193 } else { 1194 /* In theory, we wouldn't have to stop a running sched 1195 * scan in order to start another one (for 1196 * net-detect). But in practice this doesn't seem to 1197 * work properly, so stop any running sched_scan now. 1198 */ 1199 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 1200 if (ret) 1201 return ret; 1202 } 1203 1204 ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies, 1205 IWL_MVM_SCAN_NETDETECT); 1206 if (ret) 1207 return ret; 1208 1209 if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels)) 1210 return -EBUSY; 1211 1212 /* save the sched scan matchsets... */ 1213 if (nd_config->n_match_sets) { 1214 mvm->nd_match_sets = kmemdup(nd_config->match_sets, 1215 sizeof(*nd_config->match_sets) * 1216 nd_config->n_match_sets, 1217 GFP_KERNEL); 1218 if (mvm->nd_match_sets) 1219 mvm->n_nd_match_sets = nd_config->n_match_sets; 1220 } 1221 1222 /* ...and the sched scan channels for later reporting */ 1223 mvm->nd_channels = kmemdup(nd_config->channels, 1224 sizeof(*nd_config->channels) * 1225 nd_config->n_channels, 1226 GFP_KERNEL); 1227 if (mvm->nd_channels) 1228 mvm->n_nd_channels = nd_config->n_channels; 1229 1230 return 0; 1231 } 1232 1233 static void iwl_mvm_free_nd(struct iwl_mvm *mvm) 1234 { 1235 kfree(mvm->nd_match_sets); 1236 mvm->nd_match_sets = NULL; 1237 mvm->n_nd_match_sets = 0; 1238 kfree(mvm->nd_channels); 1239 mvm->nd_channels = NULL; 1240 mvm->n_nd_channels = 0; 1241 } 1242 1243 static int __iwl_mvm_suspend(struct ieee80211_hw *hw, 1244 struct cfg80211_wowlan *wowlan) 1245 { 1246 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1247 struct ieee80211_vif *vif = NULL; 1248 struct iwl_mvm_vif *mvmvif = NULL; 1249 struct ieee80211_sta *ap_sta = NULL; 1250 struct iwl_d3_manager_config d3_cfg_cmd = { 1251 /* 1252 * Program the minimum sleep time to 10 seconds, as many 1253 * platforms have issues processing a wakeup signal while 1254 * still being in the process of suspending. 1255 */ 1256 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000), 1257 }; 1258 int ret; 1259 int len __maybe_unused; 1260 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 1261 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1262 1263 if (!wowlan) { 1264 /* mac80211 shouldn't get here */ 1265 WARN_ON(1); 1266 return -EINVAL; 1267 } 1268 1269 vif = iwl_mvm_get_bss_vif(mvm); 1270 if (IS_ERR_OR_NULL(vif)) 1271 return 1; 1272 1273 mutex_lock(&mvm->mutex); 1274 1275 set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 1276 1277 synchronize_net(); 1278 1279 mvmvif = iwl_mvm_vif_from_mac80211(vif); 1280 1281 if (mvmvif->deflink.ap_sta_id == IWL_INVALID_STA) { 1282 /* if we're not associated, this must be netdetect */ 1283 if (!wowlan->nd_config) { 1284 ret = 1; 1285 goto out_noreset; 1286 } 1287 1288 ret = iwl_mvm_netdetect_config( 1289 mvm, wowlan, wowlan->nd_config, vif); 1290 if (ret) 1291 goto out; 1292 1293 mvm->net_detect = true; 1294 } else { 1295 struct iwl_wowlan_config_cmd_v6 wowlan_config_cmd = { 1296 .offloading_tid = 0, 1297 }; 1298 1299 wowlan_config_cmd.sta_id = mvmvif->deflink.ap_sta_id; 1300 1301 ap_sta = rcu_dereference_protected( 1302 mvm->fw_id_to_mac_id[mvmvif->deflink.ap_sta_id], 1303 lockdep_is_held(&mvm->mutex)); 1304 if (IS_ERR_OR_NULL(ap_sta)) { 1305 ret = -EINVAL; 1306 goto out_noreset; 1307 } 1308 1309 ret = iwl_mvm_sta_ensure_queue( 1310 mvm, ap_sta->txq[wowlan_config_cmd.offloading_tid]); 1311 if (ret) 1312 goto out_noreset; 1313 1314 ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd, 1315 vif, mvmvif, ap_sta); 1316 if (ret) 1317 goto out_noreset; 1318 ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd, 1319 vif, mvmvif, &mvmvif->deflink, 1320 ap_sta); 1321 if (ret) 1322 goto out; 1323 1324 mvm->net_detect = false; 1325 } 1326 1327 ret = iwl_mvm_power_update_device(mvm); 1328 if (ret) 1329 goto out; 1330 1331 ret = iwl_mvm_power_update_mac(mvm); 1332 if (ret) 1333 goto out; 1334 1335 #ifdef CONFIG_IWLWIFI_DEBUGFS 1336 if (mvm->d3_wake_sysassert) 1337 d3_cfg_cmd.wakeup_flags |= 1338 cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR); 1339 #endif 1340 1341 /* 1342 * Prior to 9000 device family the driver needs to stop the dbg 1343 * recording before entering D3. In later devices the FW stops the 1344 * recording automatically. 1345 */ 1346 if (mvm->trans->mac_cfg->device_family < IWL_DEVICE_FAMILY_9000) 1347 iwl_fw_dbg_stop_restart_recording(&mvm->fwrt, NULL, true); 1348 1349 /* must be last -- this switches firmware state */ 1350 ret = iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD, 0, sizeof(d3_cfg_cmd), 1351 &d3_cfg_cmd); 1352 if (ret) 1353 goto out; 1354 1355 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1356 1357 ret = iwl_trans_d3_suspend(mvm->trans, !unified_image); 1358 out: 1359 if (ret < 0) { 1360 iwl_mvm_free_nd(mvm); 1361 1362 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 1363 } 1364 out_noreset: 1365 mutex_unlock(&mvm->mutex); 1366 1367 return ret; 1368 } 1369 1370 int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) 1371 { 1372 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1373 1374 iwl_mvm_pause_tcm(mvm, true); 1375 1376 mutex_lock(&mvm->mutex); 1377 iwl_fw_runtime_suspend(&mvm->fwrt); 1378 mutex_unlock(&mvm->mutex); 1379 1380 return __iwl_mvm_suspend(hw, wowlan); 1381 } 1382 1383 struct iwl_multicast_key_data { 1384 u8 key[WOWLAN_KEY_MAX_SIZE]; 1385 u8 len; 1386 u8 flags; 1387 u8 id; 1388 u8 ipn[6]; 1389 }; 1390 1391 /* converted data from the different status responses */ 1392 struct iwl_wowlan_status_data { 1393 u64 replay_ctr; 1394 u32 num_of_gtk_rekeys; 1395 u32 received_beacons; 1396 u32 wakeup_reasons; 1397 u32 wake_packet_length; 1398 u32 wake_packet_bufsize; 1399 u16 pattern_number; 1400 u16 non_qos_seq_ctr; 1401 u16 qos_seq_ctr[8]; 1402 u8 tid_tear_down; 1403 u8 tid_offloaded_tx; 1404 1405 struct { 1406 /* including RX MIC key for TKIP */ 1407 u8 key[WOWLAN_KEY_MAX_SIZE]; 1408 u8 len; 1409 u8 flags; 1410 u8 id; 1411 } gtk[WOWLAN_GTK_KEYS_NUM]; 1412 1413 struct { 1414 /* 1415 * We store both the TKIP and AES representations 1416 * coming from the firmware because we decode the 1417 * data from there before we iterate the keys and 1418 * know which one we need. 1419 */ 1420 struct { 1421 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT]; 1422 } tkip, aes; 1423 1424 /* 1425 * We use -1 for when we have valid data but don't know 1426 * the key ID from firmware, and thus it needs to be 1427 * installed with the last key (depending on rekeying). 1428 */ 1429 s8 key_id; 1430 bool valid; 1431 } gtk_seq[2]; 1432 1433 struct { 1434 /* Same as above */ 1435 struct { 1436 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT]; 1437 u64 tx_pn; 1438 } tkip, aes; 1439 } ptk; 1440 1441 struct iwl_multicast_key_data igtk; 1442 struct iwl_multicast_key_data bigtk[WOWLAN_BIGTK_KEYS_NUM]; 1443 1444 u8 *wake_packet; 1445 }; 1446 1447 static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm, 1448 struct ieee80211_vif *vif, 1449 struct iwl_wowlan_status_data *status) 1450 { 1451 struct sk_buff *pkt = NULL; 1452 struct cfg80211_wowlan_wakeup wakeup = { 1453 .pattern_idx = -1, 1454 }; 1455 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; 1456 u32 reasons = status->wakeup_reasons; 1457 1458 if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) { 1459 wakeup_report = NULL; 1460 goto report; 1461 } 1462 1463 pm_wakeup_event(mvm->dev, 0); 1464 1465 if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET) 1466 wakeup.magic_pkt = true; 1467 1468 if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN) 1469 wakeup.pattern_idx = 1470 status->pattern_number; 1471 1472 if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 1473 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH | 1474 IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)) 1475 wakeup.disconnect = true; 1476 1477 if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE) 1478 wakeup.gtk_rekey_failure = true; 1479 1480 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 1481 wakeup.rfkill_release = true; 1482 1483 if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST) 1484 wakeup.eap_identity_req = true; 1485 1486 if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE) 1487 wakeup.four_way_handshake = true; 1488 1489 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS) 1490 wakeup.tcp_connlost = true; 1491 1492 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE) 1493 wakeup.tcp_nomoretokens = true; 1494 1495 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET) 1496 wakeup.tcp_match = true; 1497 1498 if (reasons & IWL_WAKEUP_BY_11W_UNPROTECTED_DEAUTH_OR_DISASSOC) 1499 wakeup.unprot_deauth_disassoc = true; 1500 1501 if (status->wake_packet) { 1502 int pktsize = status->wake_packet_bufsize; 1503 int pktlen = status->wake_packet_length; 1504 const u8 *pktdata = status->wake_packet; 1505 const struct ieee80211_hdr *hdr = (const void *)pktdata; 1506 int truncated = pktlen - pktsize; 1507 1508 /* this would be a firmware bug */ 1509 if (WARN_ON_ONCE(truncated < 0)) 1510 truncated = 0; 1511 1512 if (ieee80211_is_data(hdr->frame_control)) { 1513 int hdrlen = ieee80211_hdrlen(hdr->frame_control); 1514 int ivlen = 0, icvlen = 4; /* also FCS */ 1515 1516 pkt = alloc_skb(pktsize, GFP_KERNEL); 1517 if (!pkt) 1518 goto report; 1519 1520 skb_put_data(pkt, pktdata, hdrlen); 1521 pktdata += hdrlen; 1522 pktsize -= hdrlen; 1523 1524 if (ieee80211_has_protected(hdr->frame_control)) { 1525 /* 1526 * This is unlocked and using gtk_i(c)vlen, 1527 * but since everything is under RTNL still 1528 * that's not really a problem - changing 1529 * it would be difficult. 1530 */ 1531 if (is_multicast_ether_addr(hdr->addr1)) { 1532 ivlen = mvm->gtk_ivlen; 1533 icvlen += mvm->gtk_icvlen; 1534 } else { 1535 ivlen = mvm->ptk_ivlen; 1536 icvlen += mvm->ptk_icvlen; 1537 } 1538 } 1539 1540 /* if truncated, FCS/ICV is (partially) gone */ 1541 if (truncated >= icvlen) { 1542 icvlen = 0; 1543 truncated -= icvlen; 1544 } else { 1545 icvlen -= truncated; 1546 truncated = 0; 1547 } 1548 1549 pktsize -= ivlen + icvlen; 1550 pktdata += ivlen; 1551 1552 skb_put_data(pkt, pktdata, pktsize); 1553 1554 if (ieee80211_data_to_8023(pkt, vif->addr, vif->type)) 1555 goto report; 1556 wakeup.packet = pkt->data; 1557 wakeup.packet_present_len = pkt->len; 1558 wakeup.packet_len = pkt->len - truncated; 1559 wakeup.packet_80211 = false; 1560 } else { 1561 int fcslen = 4; 1562 1563 if (truncated >= 4) { 1564 truncated -= 4; 1565 fcslen = 0; 1566 } else { 1567 fcslen -= truncated; 1568 truncated = 0; 1569 } 1570 pktsize -= fcslen; 1571 wakeup.packet = status->wake_packet; 1572 wakeup.packet_present_len = pktsize; 1573 wakeup.packet_len = pktlen - truncated; 1574 wakeup.packet_80211 = true; 1575 } 1576 } 1577 1578 report: 1579 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); 1580 kfree_skb(pkt); 1581 } 1582 1583 static void iwl_mvm_le64_to_aes_seq(__le64 le_pn, struct ieee80211_key_seq *seq) 1584 { 1585 u64 pn = le64_to_cpu(le_pn); 1586 1587 seq->ccmp.pn[0] = pn >> 40; 1588 seq->ccmp.pn[1] = pn >> 32; 1589 seq->ccmp.pn[2] = pn >> 24; 1590 seq->ccmp.pn[3] = pn >> 16; 1591 seq->ccmp.pn[4] = pn >> 8; 1592 seq->ccmp.pn[5] = pn; 1593 } 1594 1595 static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc, 1596 struct ieee80211_key_seq *seq) 1597 { 1598 iwl_mvm_le64_to_aes_seq(sc->pn, seq); 1599 } 1600 1601 static void iwl_mvm_le64_to_tkip_seq(__le64 le_pn, struct ieee80211_key_seq *seq) 1602 { 1603 u64 pn = le64_to_cpu(le_pn); 1604 1605 seq->tkip.iv16 = (u16)pn; 1606 seq->tkip.iv32 = (u32)(pn >> 16); 1607 } 1608 1609 static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc, 1610 struct ieee80211_key_seq *seq) 1611 { 1612 seq->tkip.iv32 = le32_to_cpu(sc->iv32); 1613 seq->tkip.iv16 = le16_to_cpu(sc->iv16); 1614 } 1615 1616 static void iwl_mvm_set_key_rx_seq_tids(struct ieee80211_key_conf *key, 1617 struct ieee80211_key_seq *seq) 1618 { 1619 int tid; 1620 1621 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) 1622 ieee80211_set_key_rx_seq(key, tid, &seq[tid]); 1623 } 1624 1625 static void iwl_mvm_set_aes_ptk_rx_seq(struct iwl_mvm *mvm, 1626 struct iwl_wowlan_status_data *status, 1627 struct ieee80211_sta *sta, 1628 struct ieee80211_key_conf *key) 1629 { 1630 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1631 struct iwl_mvm_key_pn *ptk_pn; 1632 int tid; 1633 1634 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.aes.seq); 1635 1636 if (!iwl_mvm_has_new_rx_api(mvm)) 1637 return; 1638 1639 1640 rcu_read_lock(); 1641 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]); 1642 if (WARN_ON(!ptk_pn)) { 1643 rcu_read_unlock(); 1644 return; 1645 } 1646 1647 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1648 int i; 1649 1650 for (i = 1; i < mvm->trans->info.num_rxqs; i++) 1651 memcpy(ptk_pn->q[i].pn[tid], 1652 status->ptk.aes.seq[tid].ccmp.pn, 1653 IEEE80211_CCMP_PN_LEN); 1654 } 1655 rcu_read_unlock(); 1656 } 1657 1658 static void iwl_mvm_convert_key_counters(struct iwl_wowlan_status_data *status, 1659 union iwl_all_tsc_rsc *sc, u8 key_idx) 1660 { 1661 int i; 1662 1663 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT); 1664 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC); 1665 1666 /* GTK RX counters */ 1667 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1668 iwl_mvm_tkip_sc_to_seq(&sc->tkip.multicast_rsc[i], 1669 &status->gtk_seq[0].tkip.seq[i]); 1670 iwl_mvm_aes_sc_to_seq(&sc->aes.multicast_rsc[i], 1671 &status->gtk_seq[0].aes.seq[i]); 1672 } 1673 status->gtk_seq[0].valid = true; 1674 status->gtk_seq[0].key_id = key_idx; 1675 1676 /* PTK TX counter */ 1677 status->ptk.tkip.tx_pn = (u64)le16_to_cpu(sc->tkip.tsc.iv16) | 1678 ((u64)le32_to_cpu(sc->tkip.tsc.iv32) << 16); 1679 status->ptk.aes.tx_pn = le64_to_cpu(sc->aes.tsc.pn); 1680 1681 /* PTK RX counters */ 1682 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1683 iwl_mvm_tkip_sc_to_seq(&sc->tkip.unicast_rsc[i], 1684 &status->ptk.tkip.seq[i]); 1685 iwl_mvm_aes_sc_to_seq(&sc->aes.unicast_rsc[i], 1686 &status->ptk.aes.seq[i]); 1687 } 1688 } 1689 1690 static void 1691 iwl_mvm_convert_key_counters_v5_gtk_seq(struct iwl_wowlan_status_data *status, 1692 struct iwl_wowlan_all_rsc_tsc_v5 *sc, 1693 unsigned int idx, unsigned int key_id) 1694 { 1695 int tid; 1696 1697 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1698 iwl_mvm_le64_to_tkip_seq(sc->mcast_rsc[idx][tid], 1699 &status->gtk_seq[idx].tkip.seq[tid]); 1700 iwl_mvm_le64_to_aes_seq(sc->mcast_rsc[idx][tid], 1701 &status->gtk_seq[idx].aes.seq[tid]); 1702 } 1703 1704 status->gtk_seq[idx].valid = true; 1705 status->gtk_seq[idx].key_id = key_id; 1706 } 1707 1708 static void 1709 iwl_mvm_convert_key_counters_v5(struct iwl_wowlan_status_data *status, 1710 struct iwl_wowlan_all_rsc_tsc_v5 *sc) 1711 { 1712 int i, tid; 1713 1714 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT); 1715 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC); 1716 BUILD_BUG_ON(ARRAY_SIZE(sc->mcast_rsc) != ARRAY_SIZE(status->gtk_seq)); 1717 1718 /* GTK RX counters */ 1719 for (i = 0; i < ARRAY_SIZE(sc->mcast_key_id_map); i++) { 1720 u8 entry = sc->mcast_key_id_map[i]; 1721 1722 if (entry < ARRAY_SIZE(sc->mcast_rsc)) 1723 iwl_mvm_convert_key_counters_v5_gtk_seq(status, sc, 1724 entry, i); 1725 } 1726 1727 /* PTK TX counters not needed, assigned in device */ 1728 1729 /* PTK RX counters */ 1730 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1731 iwl_mvm_le64_to_tkip_seq(sc->ucast_rsc[tid], 1732 &status->ptk.tkip.seq[tid]); 1733 iwl_mvm_le64_to_aes_seq(sc->ucast_rsc[tid], 1734 &status->ptk.aes.seq[tid]); 1735 } 1736 } 1737 1738 static void iwl_mvm_set_key_rx_seq_idx(struct ieee80211_key_conf *key, 1739 struct iwl_wowlan_status_data *status, 1740 int idx) 1741 { 1742 switch (key->cipher) { 1743 case WLAN_CIPHER_SUITE_CCMP: 1744 case WLAN_CIPHER_SUITE_GCMP: 1745 case WLAN_CIPHER_SUITE_GCMP_256: 1746 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].aes.seq); 1747 break; 1748 case WLAN_CIPHER_SUITE_TKIP: 1749 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].tkip.seq); 1750 break; 1751 default: 1752 WARN_ON(1); 1753 } 1754 } 1755 1756 static void iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf *key, 1757 struct iwl_wowlan_status_data *status) 1758 { 1759 int i; 1760 1761 for (i = 0; i < ARRAY_SIZE(status->gtk_seq); i++) { 1762 if (!status->gtk_seq[i].valid) 1763 continue; 1764 1765 if (status->gtk_seq[i].key_id == key->keyidx) 1766 iwl_mvm_set_key_rx_seq_idx(key, status, i); 1767 } 1768 } 1769 1770 struct iwl_mvm_d3_gtk_iter_data { 1771 struct iwl_mvm *mvm; 1772 struct iwl_wowlan_status_data *status; 1773 }; 1774 1775 static void 1776 iwl_mvm_d3_set_igtk_bigtk_ipn(const struct iwl_multicast_key_data *key, 1777 struct ieee80211_key_seq *seq, u32 cipher) 1778 { 1779 switch (cipher) { 1780 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 1781 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 1782 BUILD_BUG_ON(sizeof(seq->aes_gmac.pn) != sizeof(key->ipn)); 1783 memcpy(seq->aes_gmac.pn, key->ipn, sizeof(seq->aes_gmac.pn)); 1784 break; 1785 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 1786 case WLAN_CIPHER_SUITE_AES_CMAC: 1787 BUILD_BUG_ON(sizeof(seq->aes_cmac.pn) != sizeof(key->ipn)); 1788 memcpy(seq->aes_cmac.pn, key->ipn, sizeof(seq->aes_cmac.pn)); 1789 break; 1790 default: 1791 WARN_ON(1); 1792 } 1793 } 1794 1795 static void 1796 iwl_mvm_d3_update_igtk_bigtk(struct iwl_wowlan_status_data *status, 1797 struct ieee80211_key_conf *key, 1798 struct iwl_multicast_key_data *key_data) 1799 { 1800 struct ieee80211_key_seq seq; 1801 1802 iwl_mvm_d3_set_igtk_bigtk_ipn(key_data, &seq, key->cipher); 1803 ieee80211_set_key_rx_seq(key, 0, &seq); 1804 } 1805 1806 static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw, 1807 struct ieee80211_vif *vif, 1808 struct ieee80211_sta *sta, 1809 struct ieee80211_key_conf *key, 1810 void *_data) 1811 { 1812 struct iwl_mvm_d3_gtk_iter_data *data = _data; 1813 struct iwl_wowlan_status_data *status = data->status; 1814 s8 keyidx; 1815 1816 switch (key->cipher) { 1817 case WLAN_CIPHER_SUITE_WEP40: 1818 case WLAN_CIPHER_SUITE_WEP104: 1819 /* ignore WEP completely, nothing to do */ 1820 return; 1821 case WLAN_CIPHER_SUITE_CCMP: 1822 case WLAN_CIPHER_SUITE_GCMP: 1823 case WLAN_CIPHER_SUITE_GCMP_256: 1824 if (sta) { 1825 atomic64_set(&key->tx_pn, status->ptk.aes.tx_pn); 1826 iwl_mvm_set_aes_ptk_rx_seq(data->mvm, status, sta, key); 1827 return; 1828 } 1829 fallthrough; 1830 case WLAN_CIPHER_SUITE_TKIP: 1831 if (sta) { 1832 atomic64_set(&key->tx_pn, status->ptk.tkip.tx_pn); 1833 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.tkip.seq); 1834 return; 1835 } 1836 keyidx = key->keyidx; 1837 /* 1838 * Update the seq even if there was a rekey. If there was a 1839 * rekey, we will update again after replacing the key 1840 */ 1841 if ((status->gtk[0].len && keyidx == status->gtk[0].id) || 1842 (status->gtk[1].len && keyidx == status->gtk[1].id)) 1843 iwl_mvm_set_key_rx_seq(key, status); 1844 break; 1845 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 1846 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 1847 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 1848 case WLAN_CIPHER_SUITE_AES_CMAC: 1849 if (key->keyidx == 4 || key->keyidx == 5) { 1850 iwl_mvm_d3_update_igtk_bigtk(status, key, 1851 &status->igtk); 1852 } 1853 if (key->keyidx == 6 || key->keyidx == 7) { 1854 u8 idx = key->keyidx == status->bigtk[1].id; 1855 1856 iwl_mvm_d3_update_igtk_bigtk(status, key, 1857 &status->bigtk[idx]); 1858 } 1859 } 1860 } 1861 1862 static bool iwl_mvm_gtk_rekey(struct iwl_wowlan_status_data *status, 1863 struct ieee80211_vif *vif, 1864 struct iwl_mvm *mvm) 1865 { 1866 int i, j; 1867 struct ieee80211_key_conf *key; 1868 1869 for (i = 0; i < ARRAY_SIZE(status->gtk); i++) { 1870 if (!status->gtk[i].len) 1871 continue; 1872 1873 IWL_DEBUG_WOWLAN(mvm, 1874 "Received from FW GTK: key index %d\n", 1875 status->gtk[i].id); 1876 1877 key = ieee80211_gtk_rekey_add(vif, status->gtk[i].id, 1878 status->gtk[i].key, 1879 sizeof(status->gtk[i].key), -1); 1880 if (IS_ERR(key)) { 1881 /* FW may send also the old keys */ 1882 if (PTR_ERR(key) == -EALREADY) 1883 continue; 1884 return false; 1885 } 1886 1887 for (j = 0; j < ARRAY_SIZE(status->gtk_seq); j++) { 1888 if (!status->gtk_seq[j].valid || 1889 status->gtk_seq[j].key_id != key->keyidx) 1890 continue; 1891 iwl_mvm_set_key_rx_seq_idx(key, status, j); 1892 break; 1893 } 1894 WARN_ON(j == ARRAY_SIZE(status->gtk_seq)); 1895 } 1896 1897 return true; 1898 } 1899 1900 static bool 1901 iwl_mvm_d3_igtk_bigtk_rekey_add(struct iwl_wowlan_status_data *status, 1902 struct ieee80211_vif *vif, 1903 struct iwl_multicast_key_data *key_data) 1904 { 1905 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1906 struct ieee80211_key_conf *key_config; 1907 struct ieee80211_key_seq seq; 1908 s8 keyidx = key_data->id; 1909 1910 if (!key_data->len) 1911 return true; 1912 1913 key_config = ieee80211_gtk_rekey_add(vif, keyidx, key_data->key, 1914 sizeof(key_data->key), -1); 1915 if (IS_ERR(key_config)) { 1916 /* FW may send also the old keys */ 1917 return PTR_ERR(key_config) == -EALREADY; 1918 } 1919 1920 iwl_mvm_d3_set_igtk_bigtk_ipn(key_data, &seq, key_config->cipher); 1921 ieee80211_set_key_rx_seq(key_config, 0, &seq); 1922 1923 if (keyidx == 4 || keyidx == 5) { 1924 if (mvmvif->deflink.igtk) 1925 mvmvif->deflink.igtk->hw_key_idx = STA_KEY_IDX_INVALID; 1926 mvmvif->deflink.igtk = key_config; 1927 } 1928 1929 if (vif->type == NL80211_IFTYPE_STATION && (keyidx == 6 || keyidx == 7)) 1930 rcu_assign_pointer(mvmvif->bcn_prot.keys[keyidx - 6], 1931 key_config); 1932 1933 return true; 1934 } 1935 1936 static int iwl_mvm_lookup_wowlan_status_ver(struct iwl_mvm *mvm) 1937 { 1938 u8 notif_ver; 1939 1940 if (!fw_has_api(&mvm->fw->ucode_capa, 1941 IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL)) 1942 return 6; 1943 1944 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */ 1945 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP, 1946 WOWLAN_GET_STATUSES, 0); 1947 if (!notif_ver) 1948 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, 1949 WOWLAN_GET_STATUSES, 7); 1950 1951 return notif_ver; 1952 } 1953 1954 static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm, 1955 struct ieee80211_vif *vif, 1956 struct iwl_wowlan_status_data *status) 1957 { 1958 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1959 struct iwl_mvm_d3_gtk_iter_data gtkdata = { 1960 .mvm = mvm, 1961 .status = status, 1962 }; 1963 int i; 1964 u32 disconnection_reasons = 1965 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 1966 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH; 1967 1968 if (!status || !vif->bss_conf.bssid) 1969 return false; 1970 /* 1971 * invalidate all other GTKs that might still exist and update 1972 * the one that we used 1973 */ 1974 ieee80211_iter_keys(mvm->hw, vif, 1975 iwl_mvm_d3_update_keys, >kdata); 1976 1977 if (status->num_of_gtk_rekeys) { 1978 __be64 replay_ctr = cpu_to_be64(status->replay_ctr); 1979 1980 IWL_DEBUG_WOWLAN(mvm, "num of GTK rekeying %d\n", 1981 status->num_of_gtk_rekeys); 1982 1983 if (!iwl_mvm_gtk_rekey(status, vif, mvm)) 1984 return false; 1985 1986 if (!iwl_mvm_d3_igtk_bigtk_rekey_add(status, vif, 1987 &status->igtk)) 1988 return false; 1989 1990 for (i = 0; i < ARRAY_SIZE(status->bigtk); i++) { 1991 if (!iwl_mvm_d3_igtk_bigtk_rekey_add(status, vif, 1992 &status->bigtk[i])) 1993 return false; 1994 } 1995 1996 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid, 1997 (void *)&replay_ctr, GFP_KERNEL); 1998 } 1999 2000 if (iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP, 2001 WOWLAN_GET_STATUSES, 2002 IWL_FW_CMD_VER_UNKNOWN) < 10) { 2003 mvmvif->seqno_valid = true; 2004 /* +0x10 because the set API expects next-to-use, not last-used */ 2005 mvmvif->seqno = status->non_qos_seq_ctr + 0x10; 2006 } 2007 2008 if (status->wakeup_reasons & disconnection_reasons) 2009 return false; 2010 2011 return true; 2012 } 2013 2014 static void iwl_mvm_convert_gtk_v2(struct iwl_wowlan_status_data *status, 2015 struct iwl_wowlan_gtk_status_v2 *data) 2016 { 2017 BUILD_BUG_ON(sizeof(status->gtk[0].key) < sizeof(data->key)); 2018 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY + 2019 sizeof(data->tkip_mic_key) > 2020 sizeof(status->gtk[0].key)); 2021 2022 status->gtk[0].len = data->key_len; 2023 status->gtk[0].flags = data->key_flags; 2024 status->gtk[0].id = status->gtk[0].flags & IWL_WOWLAN_GTK_IDX_MASK; 2025 2026 memcpy(status->gtk[0].key, data->key, sizeof(data->key)); 2027 2028 /* if it's as long as the TKIP encryption key, copy MIC key */ 2029 if (status->gtk[0].len == NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY) 2030 memcpy(status->gtk[0].key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 2031 data->tkip_mic_key, sizeof(data->tkip_mic_key)); 2032 } 2033 2034 static void iwl_mvm_convert_gtk_v3(struct iwl_wowlan_status_data *status, 2035 struct iwl_wowlan_gtk_status_v3 *data) 2036 { 2037 int data_idx, status_idx = 0; 2038 2039 BUILD_BUG_ON(sizeof(status->gtk[0].key) < sizeof(data[0].key)); 2040 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY + 2041 sizeof(data[0].tkip_mic_key) > 2042 sizeof(status->gtk[0].key)); 2043 BUILD_BUG_ON(ARRAY_SIZE(status->gtk) < WOWLAN_GTK_KEYS_NUM); 2044 for (data_idx = 0; data_idx < ARRAY_SIZE(status->gtk); data_idx++) { 2045 if (!(data[data_idx].key_len)) 2046 continue; 2047 status->gtk[status_idx].len = data[data_idx].key_len; 2048 status->gtk[status_idx].flags = data[data_idx].key_flags; 2049 status->gtk[status_idx].id = status->gtk[status_idx].flags & 2050 IWL_WOWLAN_GTK_IDX_MASK; 2051 2052 memcpy(status->gtk[status_idx].key, data[data_idx].key, 2053 sizeof(data[data_idx].key)); 2054 2055 /* if it's as long as the TKIP encryption key, copy MIC key */ 2056 if (status->gtk[status_idx].len == 2057 NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY) 2058 memcpy(status->gtk[status_idx].key + 2059 NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 2060 data[data_idx].tkip_mic_key, 2061 sizeof(data[data_idx].tkip_mic_key)); 2062 status_idx++; 2063 } 2064 } 2065 2066 static void iwl_mvm_convert_igtk(struct iwl_wowlan_status_data *status, 2067 struct iwl_wowlan_igtk_status_v1 *data) 2068 { 2069 int i; 2070 2071 BUILD_BUG_ON(sizeof(status->igtk.key) < sizeof(data->key)); 2072 BUILD_BUG_ON(sizeof(status->igtk.ipn) != sizeof(data->ipn)); 2073 2074 if (!data->key_len) 2075 return; 2076 2077 status->igtk.len = data->key_len; 2078 status->igtk.flags = data->key_flags; 2079 status->igtk.id = u32_get_bits(data->key_flags, 2080 IWL_WOWLAN_IGTK_BIGTK_IDX_MASK) 2081 + WOWLAN_IGTK_MIN_INDEX; 2082 2083 memcpy(status->igtk.key, data->key, sizeof(data->key)); 2084 2085 /* mac80211 expects big endian for memcmp() to work, convert */ 2086 for (i = 0; i < sizeof(data->ipn); i++) 2087 status->igtk.ipn[i] = data->ipn[sizeof(data->ipn) - i - 1]; 2088 } 2089 2090 static void iwl_mvm_convert_bigtk(struct iwl_wowlan_status_data *status, 2091 const struct iwl_wowlan_igtk_status_v1 *data) 2092 { 2093 int data_idx, status_idx = 0; 2094 2095 BUILD_BUG_ON(ARRAY_SIZE(status->bigtk) < WOWLAN_BIGTK_KEYS_NUM); 2096 2097 for (data_idx = 0; data_idx < WOWLAN_BIGTK_KEYS_NUM; data_idx++) { 2098 if (!data[data_idx].key_len) 2099 continue; 2100 2101 status->bigtk[status_idx].len = data[data_idx].key_len; 2102 status->bigtk[status_idx].flags = data[data_idx].key_flags; 2103 status->bigtk[status_idx].id = 2104 u32_get_bits(data[data_idx].key_flags, 2105 IWL_WOWLAN_IGTK_BIGTK_IDX_MASK) 2106 + WOWLAN_BIGTK_MIN_INDEX; 2107 2108 BUILD_BUG_ON(sizeof(status->bigtk[status_idx].key) < 2109 sizeof(data[data_idx].key)); 2110 BUILD_BUG_ON(sizeof(status->bigtk[status_idx].ipn) < 2111 sizeof(data[data_idx].ipn)); 2112 2113 memcpy(status->bigtk[status_idx].key, data[data_idx].key, 2114 sizeof(data[data_idx].key)); 2115 memcpy(status->bigtk[status_idx].ipn, data[data_idx].ipn, 2116 sizeof(data[data_idx].ipn)); 2117 status_idx++; 2118 } 2119 } 2120 2121 static void iwl_mvm_parse_wowlan_info_notif(struct iwl_mvm *mvm, 2122 struct iwl_wowlan_info_notif_v5 *data, 2123 struct iwl_wowlan_status_data *status, 2124 u32 len) 2125 { 2126 if (IWL_FW_CHECK(mvm, data->num_mlo_link_keys, 2127 "MLO is not supported, shouldn't receive MLO keys\n")) 2128 return; 2129 2130 if (len < sizeof(*data)) { 2131 IWL_ERR(mvm, "Invalid WoWLAN info notification!\n"); 2132 status = NULL; 2133 return; 2134 } 2135 2136 if (mvm->fast_resume) 2137 return; 2138 2139 iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc); 2140 iwl_mvm_convert_gtk_v3(status, data->gtk); 2141 iwl_mvm_convert_igtk(status, &data->igtk[0]); 2142 iwl_mvm_convert_bigtk(status, data->bigtk); 2143 status->replay_ctr = le64_to_cpu(data->replay_ctr); 2144 status->pattern_number = le16_to_cpu(data->pattern_number); 2145 status->tid_offloaded_tx = data->tid_offloaded_tx; 2146 if (IWL_FW_CHECK(mvm, 2147 data->tid_offloaded_tx >= 2148 ARRAY_SIZE(status->qos_seq_ctr), 2149 "tid_offloaded_tx is out of bound %d\n", 2150 data->tid_offloaded_tx)) 2151 data->tid_offloaded_tx = 0; 2152 status->qos_seq_ctr[data->tid_offloaded_tx] = 2153 le16_to_cpu(data->qos_seq_ctr); 2154 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); 2155 status->num_of_gtk_rekeys = 2156 le32_to_cpu(data->num_of_gtk_rekeys); 2157 status->received_beacons = le32_to_cpu(data->received_beacons); 2158 status->tid_tear_down = data->tid_tear_down; 2159 } 2160 2161 static void 2162 iwl_mvm_parse_wowlan_info_notif_v3(struct iwl_mvm *mvm, 2163 struct iwl_wowlan_info_notif_v3 *data, 2164 struct iwl_wowlan_status_data *status, 2165 u32 len) 2166 { 2167 u32 i; 2168 2169 if (len < sizeof(*data)) { 2170 IWL_ERR(mvm, "Invalid WoWLAN info notification!\n"); 2171 status = NULL; 2172 return; 2173 } 2174 2175 if (mvm->fast_resume) 2176 return; 2177 2178 iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc); 2179 iwl_mvm_convert_gtk_v3(status, data->gtk); 2180 iwl_mvm_convert_igtk(status, &data->igtk[0]); 2181 iwl_mvm_convert_bigtk(status, data->bigtk); 2182 status->replay_ctr = le64_to_cpu(data->replay_ctr); 2183 status->pattern_number = le16_to_cpu(data->pattern_number); 2184 for (i = 0; i < IWL_MAX_TID_COUNT; i++) 2185 status->qos_seq_ctr[i] = 2186 le16_to_cpu(data->qos_seq_ctr[i]); 2187 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); 2188 status->num_of_gtk_rekeys = 2189 le32_to_cpu(data->num_of_gtk_rekeys); 2190 status->received_beacons = le32_to_cpu(data->received_beacons); 2191 status->tid_tear_down = data->tid_tear_down; 2192 } 2193 2194 static void 2195 iwl_mvm_parse_wowlan_info_notif_v1(struct iwl_mvm *mvm, 2196 struct iwl_wowlan_info_notif_v1 *data, 2197 struct iwl_wowlan_status_data *status, 2198 u32 len) 2199 { 2200 u32 i; 2201 2202 if (len < sizeof(*data)) { 2203 IWL_ERR(mvm, "Invalid WoWLAN info notification!\n"); 2204 status = NULL; 2205 return; 2206 } 2207 2208 iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc); 2209 iwl_mvm_convert_gtk_v3(status, data->gtk); 2210 iwl_mvm_convert_igtk(status, &data->igtk[0]); 2211 status->replay_ctr = le64_to_cpu(data->replay_ctr); 2212 status->pattern_number = le16_to_cpu(data->pattern_number); 2213 for (i = 0; i < IWL_MAX_TID_COUNT; i++) 2214 status->qos_seq_ctr[i] = 2215 le16_to_cpu(data->qos_seq_ctr[i]); 2216 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); 2217 status->num_of_gtk_rekeys = 2218 le32_to_cpu(data->num_of_gtk_rekeys); 2219 status->received_beacons = le32_to_cpu(data->received_beacons); 2220 status->tid_tear_down = data->tid_tear_down; 2221 } 2222 2223 /* Occasionally, templates would be nice. This is one of those times ... */ 2224 #define iwl_mvm_parse_wowlan_status_common(_ver) \ 2225 static struct iwl_wowlan_status_data * \ 2226 iwl_mvm_parse_wowlan_status_common_ ## _ver(struct iwl_mvm *mvm, \ 2227 struct iwl_wowlan_status_ ##_ver *data,\ 2228 int len) \ 2229 { \ 2230 struct iwl_wowlan_status_data *status; \ 2231 int data_size, i; \ 2232 \ 2233 if (len < sizeof(*data)) { \ 2234 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \ 2235 return NULL; \ 2236 } \ 2237 \ 2238 data_size = ALIGN(le32_to_cpu(data->wake_packet_bufsize), 4); \ 2239 if (len != sizeof(*data) + data_size) { \ 2240 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \ 2241 return NULL; \ 2242 } \ 2243 \ 2244 status = kzalloc(sizeof(*status), GFP_KERNEL); \ 2245 if (!status) \ 2246 return NULL; \ 2247 \ 2248 /* copy all the common fields */ \ 2249 status->replay_ctr = le64_to_cpu(data->replay_ctr); \ 2250 status->pattern_number = le16_to_cpu(data->pattern_number); \ 2251 status->non_qos_seq_ctr = le16_to_cpu(data->non_qos_seq_ctr); \ 2252 for (i = 0; i < 8; i++) \ 2253 status->qos_seq_ctr[i] = \ 2254 le16_to_cpu(data->qos_seq_ctr[i]); \ 2255 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); \ 2256 status->num_of_gtk_rekeys = \ 2257 le32_to_cpu(data->num_of_gtk_rekeys); \ 2258 status->received_beacons = le32_to_cpu(data->received_beacons); \ 2259 status->wake_packet_length = \ 2260 le32_to_cpu(data->wake_packet_length); \ 2261 status->wake_packet_bufsize = \ 2262 le32_to_cpu(data->wake_packet_bufsize); \ 2263 if (status->wake_packet_bufsize) { \ 2264 status->wake_packet = \ 2265 kmemdup(data->wake_packet, \ 2266 status->wake_packet_bufsize, \ 2267 GFP_KERNEL); \ 2268 if (!status->wake_packet) { \ 2269 kfree(status); \ 2270 return NULL; \ 2271 } \ 2272 } else { \ 2273 status->wake_packet = NULL; \ 2274 } \ 2275 \ 2276 return status; \ 2277 } 2278 2279 iwl_mvm_parse_wowlan_status_common(v6) 2280 iwl_mvm_parse_wowlan_status_common(v7) 2281 2282 static struct iwl_wowlan_status_data * 2283 iwl_mvm_send_wowlan_get_status(struct iwl_mvm *mvm, u8 sta_id) 2284 { 2285 struct iwl_wowlan_status_data *status; 2286 struct iwl_wowlan_get_status_cmd get_status_cmd = { 2287 .sta_id = cpu_to_le32(sta_id), 2288 }; 2289 struct iwl_host_cmd cmd = { 2290 .id = WOWLAN_GET_STATUSES, 2291 .flags = CMD_WANT_SKB, 2292 .data = { &get_status_cmd, }, 2293 .len = { sizeof(get_status_cmd), }, 2294 }; 2295 int ret, len; 2296 u8 notif_ver; 2297 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id, 2298 IWL_FW_CMD_VER_UNKNOWN); 2299 2300 if (cmd_ver == IWL_FW_CMD_VER_UNKNOWN) 2301 cmd.len[0] = 0; 2302 2303 lockdep_assert_held(&mvm->mutex); 2304 2305 ret = iwl_mvm_send_cmd(mvm, &cmd); 2306 if (ret) { 2307 IWL_ERR(mvm, "failed to query wakeup status (%d)\n", ret); 2308 return ERR_PTR(ret); 2309 } 2310 2311 len = iwl_rx_packet_payload_len(cmd.resp_pkt); 2312 2313 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */ 2314 notif_ver = iwl_mvm_lookup_wowlan_status_ver(mvm); 2315 2316 if (notif_ver < 7) { 2317 struct iwl_wowlan_status_v6 *v6 = (void *)cmd.resp_pkt->data; 2318 2319 status = iwl_mvm_parse_wowlan_status_common_v6(mvm, v6, len); 2320 if (!status) 2321 goto out_free_resp; 2322 2323 BUILD_BUG_ON(sizeof(v6->gtk.decrypt_key) > 2324 sizeof(status->gtk[0].key)); 2325 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY + 2326 sizeof(v6->gtk.tkip_mic_key) > 2327 sizeof(status->gtk[0].key)); 2328 2329 /* copy GTK info to the right place */ 2330 memcpy(status->gtk[0].key, v6->gtk.decrypt_key, 2331 sizeof(v6->gtk.decrypt_key)); 2332 memcpy(status->gtk[0].key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 2333 v6->gtk.tkip_mic_key, 2334 sizeof(v6->gtk.tkip_mic_key)); 2335 2336 iwl_mvm_convert_key_counters(status, &v6->gtk.rsc.all_tsc_rsc, 2337 v6->gtk.key_index); 2338 2339 /* hardcode the key length to 16 since v6 only supports 16 */ 2340 status->gtk[0].len = 16; 2341 2342 /* 2343 * The key index only uses 2 bits (values 0 to 3) and 2344 * we always set bit 7 which means this is the 2345 * currently used key. 2346 */ 2347 status->gtk[0].flags = v6->gtk.key_index | BIT(7); 2348 status->gtk[0].id = v6->gtk.key_index; 2349 } else if (notif_ver == 7) { 2350 struct iwl_wowlan_status_v7 *v7 = (void *)cmd.resp_pkt->data; 2351 2352 status = iwl_mvm_parse_wowlan_status_common_v7(mvm, v7, len); 2353 if (!status) 2354 goto out_free_resp; 2355 2356 iwl_mvm_convert_key_counters(status, &v7->gtk[0].rsc.all_tsc_rsc, 2357 v7->gtk[0].key_flags & IWL_WOWLAN_GTK_IDX_MASK); 2358 iwl_mvm_convert_gtk_v2(status, &v7->gtk[0]); 2359 iwl_mvm_convert_igtk(status, &v7->igtk[0]); 2360 } else { 2361 IWL_ERR(mvm, 2362 "Firmware advertises unknown WoWLAN status response %d!\n", 2363 notif_ver); 2364 status = NULL; 2365 } 2366 2367 out_free_resp: 2368 iwl_free_resp(&cmd); 2369 return status; 2370 } 2371 2372 /* releases the MVM mutex */ 2373 static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm, 2374 struct ieee80211_vif *vif, 2375 struct iwl_wowlan_status_data *status) 2376 { 2377 int i; 2378 bool keep = false; 2379 struct iwl_mvm_sta *mvm_ap_sta; 2380 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2381 int wowlan_info_ver = iwl_fw_lookup_notif_ver(mvm->fw, 2382 PROT_OFFLOAD_GROUP, 2383 WOWLAN_INFO_NOTIFICATION, 2384 IWL_FW_CMD_VER_UNKNOWN); 2385 2386 if (!status) 2387 goto out_unlock; 2388 2389 IWL_DEBUG_WOWLAN(mvm, "wakeup reason 0x%x\n", 2390 status->wakeup_reasons); 2391 2392 mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, 2393 mvmvif->deflink.ap_sta_id); 2394 if (!mvm_ap_sta) 2395 goto out_unlock; 2396 2397 /* firmware stores last-used value, we store next value */ 2398 if (wowlan_info_ver >= 5) { 2399 mvm_ap_sta->tid_data[status->tid_offloaded_tx].seq_number = 2400 status->qos_seq_ctr[status->tid_offloaded_tx] + 0x10; 2401 } else { 2402 for (i = 0; i < IWL_MAX_TID_COUNT; i++) 2403 mvm_ap_sta->tid_data[i].seq_number = 2404 status->qos_seq_ctr[i] + 0x10; 2405 } 2406 2407 if (mvm->trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_22000) { 2408 i = mvm->offload_tid; 2409 iwl_trans_set_q_ptrs(mvm->trans, 2410 mvm_ap_sta->tid_data[i].txq_id, 2411 mvm_ap_sta->tid_data[i].seq_number >> 4); 2412 } 2413 2414 iwl_mvm_report_wakeup_reasons(mvm, vif, status); 2415 2416 keep = iwl_mvm_setup_connection_keep(mvm, vif, status); 2417 out_unlock: 2418 mutex_unlock(&mvm->mutex); 2419 return keep; 2420 } 2421 2422 #define ND_QUERY_BUF_LEN (sizeof(struct iwl_scan_offload_profile_match) * \ 2423 IWL_SCAN_MAX_PROFILES) 2424 2425 struct iwl_mvm_nd_results { 2426 u32 matched_profiles; 2427 u8 matches[ND_QUERY_BUF_LEN]; 2428 }; 2429 2430 static int 2431 iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm, 2432 struct iwl_mvm_nd_results *results) 2433 { 2434 struct iwl_scan_offload_match_info *query; 2435 struct iwl_host_cmd cmd = { 2436 .id = SCAN_OFFLOAD_PROFILES_QUERY_CMD, 2437 .flags = CMD_WANT_SKB, 2438 }; 2439 int ret, len; 2440 size_t query_len, matches_len; 2441 int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw); 2442 2443 ret = iwl_mvm_send_cmd(mvm, &cmd); 2444 if (ret) { 2445 IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret); 2446 return ret; 2447 } 2448 2449 if (fw_has_api(&mvm->fw->ucode_capa, 2450 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2451 query_len = sizeof(struct iwl_scan_offload_match_info); 2452 matches_len = sizeof(struct iwl_scan_offload_profile_match) * 2453 max_profiles; 2454 } else { 2455 query_len = sizeof(struct iwl_scan_offload_profiles_query_v1); 2456 matches_len = sizeof(struct iwl_scan_offload_profile_match_v1) * 2457 max_profiles; 2458 } 2459 2460 len = iwl_rx_packet_payload_len(cmd.resp_pkt); 2461 if (len < query_len) { 2462 IWL_ERR(mvm, "Invalid scan offload profiles query response!\n"); 2463 ret = -EIO; 2464 goto out_free_resp; 2465 } 2466 2467 query = (void *)cmd.resp_pkt->data; 2468 2469 results->matched_profiles = le32_to_cpu(query->matched_profiles); 2470 memcpy(results->matches, query->matches, matches_len); 2471 2472 #ifdef CONFIG_IWLWIFI_DEBUGFS 2473 mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done); 2474 #endif 2475 2476 out_free_resp: 2477 iwl_free_resp(&cmd); 2478 return ret; 2479 } 2480 2481 static int iwl_mvm_query_num_match_chans(struct iwl_mvm *mvm, 2482 struct iwl_mvm_nd_results *results, 2483 int idx) 2484 { 2485 int n_chans = 0, i; 2486 2487 if (fw_has_api(&mvm->fw->ucode_capa, 2488 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2489 struct iwl_scan_offload_profile_match *matches = 2490 (void *)results->matches; 2491 2492 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; i++) 2493 n_chans += hweight8(matches[idx].matching_channels[i]); 2494 } else { 2495 struct iwl_scan_offload_profile_match_v1 *matches = 2496 (void *)results->matches; 2497 2498 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1; i++) 2499 n_chans += hweight8(matches[idx].matching_channels[i]); 2500 } 2501 2502 return n_chans; 2503 } 2504 2505 static void iwl_mvm_query_set_freqs(struct iwl_mvm *mvm, 2506 struct iwl_mvm_nd_results *results, 2507 struct cfg80211_wowlan_nd_match *match, 2508 int idx) 2509 { 2510 int i; 2511 int n_channels = 0; 2512 2513 if (fw_has_api(&mvm->fw->ucode_capa, 2514 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2515 struct iwl_scan_offload_profile_match *matches = 2516 (void *)results->matches; 2517 2518 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; i++) 2519 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8))) 2520 match->channels[n_channels++] = 2521 mvm->nd_channels[i]->center_freq; 2522 } else { 2523 struct iwl_scan_offload_profile_match_v1 *matches = 2524 (void *)results->matches; 2525 2526 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1 * 8; i++) 2527 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8))) 2528 match->channels[n_channels++] = 2529 mvm->nd_channels[i]->center_freq; 2530 } 2531 /* We may have ended up with fewer channels than we allocated. */ 2532 match->n_channels = n_channels; 2533 } 2534 2535 /** 2536 * enum iwl_d3_notif - d3 notifications 2537 * @IWL_D3_NOTIF_WOWLAN_INFO: WOWLAN_INFO_NOTIF was received 2538 * @IWL_D3_NOTIF_WOWLAN_WAKE_PKT: WOWLAN_WAKE_PKT_NOTIF was received 2539 * @IWL_D3_NOTIF_PROT_OFFLOAD: PROT_OFFLOAD_NOTIF was received 2540 * @IWL_D3_ND_MATCH_INFO: OFFLOAD_MATCH_INFO_NOTIF was received 2541 * @IWL_D3_NOTIF_D3_END_NOTIF: D3_END_NOTIF was received 2542 */ 2543 enum iwl_d3_notif { 2544 IWL_D3_NOTIF_WOWLAN_INFO = BIT(0), 2545 IWL_D3_NOTIF_WOWLAN_WAKE_PKT = BIT(1), 2546 IWL_D3_NOTIF_PROT_OFFLOAD = BIT(2), 2547 IWL_D3_ND_MATCH_INFO = BIT(3), 2548 IWL_D3_NOTIF_D3_END_NOTIF = BIT(4) 2549 }; 2550 2551 /* manage d3 resume data */ 2552 struct iwl_d3_data { 2553 struct iwl_wowlan_status_data *status; 2554 u32 d3_end_flags; 2555 u32 notif_expected; /* bitmap - see &enum iwl_d3_notif */ 2556 u32 notif_received; /* bitmap - see &enum iwl_d3_notif */ 2557 struct iwl_mvm_nd_results *nd_results; 2558 bool nd_results_valid; 2559 }; 2560 2561 static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm, 2562 struct ieee80211_vif *vif, 2563 struct iwl_d3_data *d3_data) 2564 { 2565 struct cfg80211_wowlan_nd_info *net_detect = NULL; 2566 struct cfg80211_wowlan_wakeup wakeup = { 2567 .pattern_idx = -1, 2568 }; 2569 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; 2570 unsigned long matched_profiles; 2571 u32 reasons = 0; 2572 int i, n_matches, ret; 2573 2574 if (WARN_ON(!d3_data || !d3_data->status)) 2575 goto out; 2576 2577 reasons = d3_data->status->wakeup_reasons; 2578 2579 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 2580 wakeup.rfkill_release = true; 2581 2582 if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) 2583 goto out; 2584 2585 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2586 WOWLAN_INFO_NOTIFICATION, 0)) { 2587 IWL_INFO(mvm, "Query FW for ND results\n"); 2588 ret = iwl_mvm_netdetect_query_results(mvm, d3_data->nd_results); 2589 2590 } else { 2591 IWL_INFO(mvm, "Notification based ND results\n"); 2592 ret = d3_data->nd_results_valid ? 0 : -1; 2593 } 2594 2595 if (ret || !d3_data->nd_results->matched_profiles) { 2596 wakeup_report = NULL; 2597 goto out; 2598 } 2599 2600 matched_profiles = d3_data->nd_results->matched_profiles; 2601 if (mvm->n_nd_match_sets) { 2602 n_matches = hweight_long(matched_profiles); 2603 } else { 2604 IWL_ERR(mvm, "no net detect match information available\n"); 2605 n_matches = 0; 2606 } 2607 2608 net_detect = kzalloc(struct_size(net_detect, matches, n_matches), 2609 GFP_KERNEL); 2610 if (!net_detect || !n_matches) 2611 goto out_report_nd; 2612 net_detect->n_matches = n_matches; 2613 n_matches = 0; 2614 2615 for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) { 2616 struct cfg80211_wowlan_nd_match *match; 2617 int idx, n_channels = 0; 2618 2619 n_channels = iwl_mvm_query_num_match_chans(mvm, 2620 d3_data->nd_results, 2621 i); 2622 2623 match = kzalloc(struct_size(match, channels, n_channels), 2624 GFP_KERNEL); 2625 if (!match) 2626 goto out_report_nd; 2627 match->n_channels = n_channels; 2628 2629 net_detect->matches[n_matches++] = match; 2630 2631 /* We inverted the order of the SSIDs in the scan 2632 * request, so invert the index here. 2633 */ 2634 idx = mvm->n_nd_match_sets - i - 1; 2635 match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len; 2636 memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid, 2637 match->ssid.ssid_len); 2638 2639 if (mvm->n_nd_channels < n_channels) 2640 continue; 2641 2642 iwl_mvm_query_set_freqs(mvm, d3_data->nd_results, match, i); 2643 } 2644 /* We may have fewer matches than we allocated. */ 2645 net_detect->n_matches = n_matches; 2646 2647 out_report_nd: 2648 wakeup.net_detect = net_detect; 2649 out: 2650 iwl_mvm_free_nd(mvm); 2651 2652 mutex_unlock(&mvm->mutex); 2653 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); 2654 2655 if (net_detect) { 2656 for (i = 0; i < net_detect->n_matches; i++) 2657 kfree(net_detect->matches[i]); 2658 kfree(net_detect); 2659 } 2660 } 2661 2662 static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac, 2663 struct ieee80211_vif *vif) 2664 { 2665 /* skip the one we keep connection on */ 2666 if (data == vif) 2667 return; 2668 2669 if (vif->type == NL80211_IFTYPE_STATION) 2670 ieee80211_resume_disconnect(vif); 2671 } 2672 2673 enum rt_status { 2674 FW_ALIVE, 2675 FW_NEEDS_RESET, 2676 FW_ERROR, 2677 }; 2678 2679 static enum rt_status iwl_mvm_check_rt_status(struct iwl_mvm *mvm, 2680 struct ieee80211_vif *vif) 2681 { 2682 u32 err_id; 2683 2684 /* check for lmac1 error */ 2685 if (iwl_fwrt_read_err_table(mvm->trans, 2686 mvm->trans->dbg.lmac_error_event_table[0], 2687 &err_id)) { 2688 if (err_id == RF_KILL_INDICATOR_FOR_WOWLAN) { 2689 IWL_WARN(mvm, "Rfkill was toggled during suspend\n"); 2690 if (vif) { 2691 struct cfg80211_wowlan_wakeup wakeup = { 2692 .rfkill_release = true, 2693 }; 2694 2695 ieee80211_report_wowlan_wakeup(vif, &wakeup, 2696 GFP_KERNEL); 2697 } 2698 2699 return FW_NEEDS_RESET; 2700 } 2701 return FW_ERROR; 2702 } 2703 2704 /* check if we have lmac2 set and check for error */ 2705 if (iwl_fwrt_read_err_table(mvm->trans, 2706 mvm->trans->dbg.lmac_error_event_table[1], 2707 NULL)) 2708 return FW_ERROR; 2709 2710 /* check for umac error */ 2711 if (iwl_fwrt_read_err_table(mvm->trans, 2712 mvm->trans->dbg.umac_error_event_table, 2713 NULL)) 2714 return FW_ERROR; 2715 2716 return FW_ALIVE; 2717 } 2718 2719 /* 2720 * This function assumes: 2721 * 1. The mutex is already held. 2722 * 2. The callee functions unlock the mutex. 2723 */ 2724 static bool 2725 iwl_mvm_choose_query_wakeup_reasons(struct iwl_mvm *mvm, 2726 struct ieee80211_vif *vif, 2727 struct iwl_d3_data *d3_data) 2728 { 2729 lockdep_assert_held(&mvm->mutex); 2730 2731 /* if FW uses status notification, status shouldn't be NULL here */ 2732 if (!d3_data->status) { 2733 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2734 u8 sta_id = mvm->net_detect ? IWL_INVALID_STA : 2735 mvmvif->deflink.ap_sta_id; 2736 2737 d3_data->status = iwl_mvm_send_wowlan_get_status(mvm, sta_id); 2738 } 2739 2740 if (mvm->net_detect) { 2741 iwl_mvm_query_netdetect_reasons(mvm, vif, d3_data); 2742 return false; 2743 } 2744 2745 return iwl_mvm_query_wakeup_reasons(mvm, vif, 2746 d3_data->status); 2747 } 2748 2749 #define IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT (IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET | \ 2750 IWL_WOWLAN_WAKEUP_BY_PATTERN | \ 2751 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN |\ 2752 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN_WILDCARD |\ 2753 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN |\ 2754 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN_WILDCARD) 2755 2756 static int iwl_mvm_wowlan_store_wake_pkt(struct iwl_mvm *mvm, 2757 struct iwl_wowlan_wake_pkt_notif *notif, 2758 struct iwl_wowlan_status_data *status, 2759 u32 len) 2760 { 2761 u32 data_size, packet_len = le32_to_cpu(notif->wake_packet_length); 2762 2763 if (len < sizeof(*notif)) { 2764 IWL_ERR(mvm, "Invalid WoWLAN wake packet notification!\n"); 2765 return -EIO; 2766 } 2767 2768 if (WARN_ON(!status)) { 2769 IWL_ERR(mvm, "Got wake packet notification but wowlan status data is NULL\n"); 2770 return -EIO; 2771 } 2772 2773 if (WARN_ON(!(status->wakeup_reasons & 2774 IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT))) { 2775 IWL_ERR(mvm, "Got wakeup packet but wakeup reason is %x\n", 2776 status->wakeup_reasons); 2777 return -EIO; 2778 } 2779 2780 data_size = len - offsetof(struct iwl_wowlan_wake_pkt_notif, wake_packet); 2781 2782 /* data_size got the padding from the notification, remove it. */ 2783 if (packet_len < data_size) 2784 data_size = packet_len; 2785 2786 status->wake_packet = kmemdup(notif->wake_packet, data_size, 2787 GFP_ATOMIC); 2788 2789 if (!status->wake_packet) 2790 return -ENOMEM; 2791 2792 status->wake_packet_length = packet_len; 2793 status->wake_packet_bufsize = data_size; 2794 2795 return 0; 2796 } 2797 2798 static void iwl_mvm_nd_match_info_handler(struct iwl_mvm *mvm, 2799 struct iwl_d3_data *d3_data, 2800 struct iwl_scan_offload_match_info *notif, 2801 u32 len) 2802 { 2803 struct iwl_wowlan_status_data *status = d3_data->status; 2804 struct ieee80211_vif *vif = iwl_mvm_get_bss_vif(mvm); 2805 struct iwl_mvm_nd_results *results = d3_data->nd_results; 2806 size_t i, matches_len = sizeof(struct iwl_scan_offload_profile_match) * 2807 iwl_umac_scan_get_max_profiles(mvm->fw); 2808 2809 if (IS_ERR_OR_NULL(vif)) 2810 return; 2811 2812 if (len < sizeof(struct iwl_scan_offload_match_info)) { 2813 IWL_ERR(mvm, "Invalid scan match info notification\n"); 2814 return; 2815 } 2816 2817 if (!mvm->net_detect) { 2818 IWL_ERR(mvm, "Unexpected scan match info notification\n"); 2819 return; 2820 } 2821 2822 if (!status || status->wakeup_reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) { 2823 IWL_ERR(mvm, 2824 "Ignore scan match info notification: no reason\n"); 2825 return; 2826 } 2827 2828 #ifdef CONFIG_IWLWIFI_DEBUGFS 2829 mvm->last_netdetect_scans = le32_to_cpu(notif->n_scans_done); 2830 #endif 2831 2832 results->matched_profiles = le32_to_cpu(notif->matched_profiles); 2833 IWL_INFO(mvm, "number of matched profiles=%u\n", 2834 results->matched_profiles); 2835 2836 if (results->matched_profiles) { 2837 memcpy(results->matches, notif->matches, matches_len); 2838 d3_data->nd_results_valid = true; 2839 } 2840 2841 /* no scan should be active at this point */ 2842 mvm->scan_status = 0; 2843 for (i = 0; i < mvm->max_scans; i++) 2844 mvm->scan_uid_status[i] = 0; 2845 } 2846 2847 static bool iwl_mvm_wait_d3_notif(struct iwl_notif_wait_data *notif_wait, 2848 struct iwl_rx_packet *pkt, void *data) 2849 { 2850 struct iwl_mvm *mvm = 2851 container_of(notif_wait, struct iwl_mvm, notif_wait); 2852 struct iwl_d3_data *d3_data = data; 2853 u32 len = iwl_rx_packet_payload_len(pkt); 2854 int ret; 2855 int wowlan_info_ver = iwl_fw_lookup_notif_ver(mvm->fw, 2856 PROT_OFFLOAD_GROUP, 2857 WOWLAN_INFO_NOTIFICATION, 2858 IWL_FW_CMD_VER_UNKNOWN); 2859 2860 2861 switch (WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) { 2862 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION): { 2863 2864 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_INFO) { 2865 /* We might get two notifications due to dual bss */ 2866 IWL_DEBUG_WOWLAN(mvm, 2867 "Got additional wowlan info notification\n"); 2868 break; 2869 } 2870 2871 if (wowlan_info_ver == 1) { 2872 struct iwl_wowlan_info_notif_v1 *notif_v1 = 2873 (void *)pkt->data; 2874 2875 iwl_mvm_parse_wowlan_info_notif_v1(mvm, notif_v1, 2876 d3_data->status, 2877 len); 2878 } else if (wowlan_info_ver == 3) { 2879 struct iwl_wowlan_info_notif_v3 *notif = 2880 (void *)pkt->data; 2881 2882 iwl_mvm_parse_wowlan_info_notif_v3(mvm, notif, 2883 d3_data->status, len); 2884 } else if (wowlan_info_ver == 5) { 2885 struct iwl_wowlan_info_notif_v5 *notif = 2886 (void *)pkt->data; 2887 2888 iwl_mvm_parse_wowlan_info_notif(mvm, notif, 2889 d3_data->status, len); 2890 } else { 2891 IWL_FW_CHECK(mvm, 1, 2892 "Firmware advertises unknown WoWLAN info notification %d!\n", 2893 wowlan_info_ver); 2894 return false; 2895 } 2896 2897 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_INFO; 2898 2899 if (d3_data->status && 2900 d3_data->status->wakeup_reasons & IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT) 2901 /* We are supposed to get also wake packet notif */ 2902 d3_data->notif_expected |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT; 2903 2904 break; 2905 } 2906 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION): { 2907 struct iwl_wowlan_wake_pkt_notif *notif = (void *)pkt->data; 2908 2909 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_WAKE_PKT) { 2910 /* We shouldn't get two wake packet notifications */ 2911 IWL_ERR(mvm, 2912 "Got additional wowlan wake packet notification\n"); 2913 } else { 2914 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT; 2915 len = iwl_rx_packet_payload_len(pkt); 2916 ret = iwl_mvm_wowlan_store_wake_pkt(mvm, notif, 2917 d3_data->status, 2918 len); 2919 if (ret) 2920 IWL_ERR(mvm, 2921 "Can't parse WOWLAN_WAKE_PKT_NOTIFICATION\n"); 2922 } 2923 2924 break; 2925 } 2926 case WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF): { 2927 struct iwl_scan_offload_match_info *notif = (void *)pkt->data; 2928 2929 if (d3_data->notif_received & IWL_D3_ND_MATCH_INFO) { 2930 IWL_ERR(mvm, 2931 "Got additional netdetect match info\n"); 2932 break; 2933 } 2934 2935 d3_data->notif_received |= IWL_D3_ND_MATCH_INFO; 2936 2937 /* explicitly set this in the 'expected' as well */ 2938 d3_data->notif_expected |= IWL_D3_ND_MATCH_INFO; 2939 2940 len = iwl_rx_packet_payload_len(pkt); 2941 iwl_mvm_nd_match_info_handler(mvm, d3_data, notif, len); 2942 break; 2943 } 2944 case WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION): { 2945 struct iwl_d3_end_notif *notif = (void *)pkt->data; 2946 2947 d3_data->d3_end_flags = __le32_to_cpu(notif->flags); 2948 d3_data->notif_received |= IWL_D3_NOTIF_D3_END_NOTIF; 2949 2950 break; 2951 } 2952 default: 2953 WARN_ON(1); 2954 } 2955 2956 return d3_data->notif_received == d3_data->notif_expected; 2957 } 2958 2959 static int iwl_mvm_resume_firmware(struct iwl_mvm *mvm) 2960 { 2961 int ret; 2962 struct iwl_host_cmd cmd = { 2963 .id = D0I3_END_CMD, 2964 .flags = CMD_WANT_SKB, 2965 }; 2966 bool reset = fw_has_capa(&mvm->fw->ucode_capa, 2967 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 2968 2969 ret = iwl_trans_d3_resume(mvm->trans, !reset); 2970 if (ret) 2971 return ret; 2972 2973 /* 2974 * We should trigger resume flow using command only for 22000 family 2975 * AX210 and above don't need the command since they have 2976 * the doorbell interrupt. 2977 */ 2978 if (mvm->trans->mac_cfg->device_family <= IWL_DEVICE_FAMILY_22000 && 2979 fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_D0I3_END_FIRST)) { 2980 ret = iwl_mvm_send_cmd(mvm, &cmd); 2981 if (ret < 0) 2982 IWL_ERR(mvm, "Failed to send D0I3_END_CMD first (%d)\n", 2983 ret); 2984 } 2985 2986 return ret; 2987 } 2988 2989 #define IWL_MVM_D3_NOTIF_TIMEOUT (HZ / 3) 2990 2991 static int iwl_mvm_d3_notif_wait(struct iwl_mvm *mvm, 2992 struct iwl_d3_data *d3_data) 2993 { 2994 static const u16 d3_resume_notif[] = { 2995 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION), 2996 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION), 2997 WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF), 2998 WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION) 2999 }; 3000 static const u16 d3_fast_resume_notif[] = { 3001 WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION) 3002 }; 3003 struct iwl_notification_wait wait_d3_notif; 3004 int ret; 3005 3006 if (mvm->fast_resume) 3007 iwl_init_notification_wait(&mvm->notif_wait, &wait_d3_notif, 3008 d3_fast_resume_notif, 3009 ARRAY_SIZE(d3_fast_resume_notif), 3010 iwl_mvm_wait_d3_notif, d3_data); 3011 else 3012 iwl_init_notification_wait(&mvm->notif_wait, &wait_d3_notif, 3013 d3_resume_notif, 3014 ARRAY_SIZE(d3_resume_notif), 3015 iwl_mvm_wait_d3_notif, d3_data); 3016 3017 ret = iwl_mvm_resume_firmware(mvm); 3018 if (ret) { 3019 iwl_remove_notification(&mvm->notif_wait, &wait_d3_notif); 3020 return ret; 3021 } 3022 3023 return iwl_wait_notification(&mvm->notif_wait, &wait_d3_notif, 3024 IWL_MVM_D3_NOTIF_TIMEOUT); 3025 } 3026 3027 static inline bool iwl_mvm_d3_resume_notif_based(struct iwl_mvm *mvm) 3028 { 3029 return iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3030 WOWLAN_INFO_NOTIFICATION, 0) && 3031 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3032 WOWLAN_WAKE_PKT_NOTIFICATION, 0) && 3033 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3034 D3_END_NOTIFICATION, 0); 3035 } 3036 3037 static int __iwl_mvm_resume(struct iwl_mvm *mvm) 3038 { 3039 struct ieee80211_vif *vif = NULL; 3040 int ret = 1; 3041 struct iwl_mvm_nd_results results = {}; 3042 struct iwl_d3_data d3_data = { 3043 .notif_expected = 3044 IWL_D3_NOTIF_WOWLAN_INFO | 3045 IWL_D3_NOTIF_D3_END_NOTIF, 3046 .nd_results_valid = false, 3047 .nd_results = &results, 3048 }; 3049 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 3050 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 3051 bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa, 3052 IWL_UCODE_TLV_CAPA_D0I3_END_FIRST); 3053 bool resume_notif_based = iwl_mvm_d3_resume_notif_based(mvm); 3054 enum rt_status rt_status; 3055 bool keep = false; 3056 3057 mutex_lock(&mvm->mutex); 3058 3059 /* Apparently, the device went away and device_powered_off() was called, 3060 * don't even try to read the rt_status, the device is currently 3061 * inaccessible. 3062 */ 3063 if (!test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) { 3064 IWL_INFO(mvm, 3065 "Can't resume, device_powered_off() was called during wowlan\n"); 3066 goto err; 3067 } 3068 3069 mvm->last_reset_or_resume_time_jiffies = jiffies; 3070 3071 /* get the BSS vif pointer again */ 3072 vif = iwl_mvm_get_bss_vif(mvm); 3073 if (IS_ERR_OR_NULL(vif)) 3074 goto err; 3075 3076 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt); 3077 3078 rt_status = iwl_mvm_check_rt_status(mvm, vif); 3079 if (rt_status != FW_ALIVE) { 3080 iwl_trans_notify_fw_error(mvm->trans); 3081 if (rt_status == FW_ERROR) { 3082 IWL_ERR(mvm, "FW Error occurred during suspend. Restarting.\n"); 3083 iwl_mvm_dump_nic_error_log(mvm); 3084 iwl_dbg_tlv_time_point(&mvm->fwrt, 3085 IWL_FW_INI_TIME_POINT_FW_ASSERT, 3086 NULL); 3087 iwl_fw_dbg_collect_desc(&mvm->fwrt, 3088 &iwl_dump_desc_assert, 3089 false, 0); 3090 } 3091 ret = 1; 3092 goto err; 3093 } 3094 3095 if (resume_notif_based) { 3096 d3_data.status = kzalloc(sizeof(*d3_data.status), GFP_KERNEL); 3097 if (!d3_data.status) { 3098 IWL_ERR(mvm, "Failed to allocate wowlan status\n"); 3099 ret = -ENOMEM; 3100 goto err; 3101 } 3102 3103 ret = iwl_mvm_d3_notif_wait(mvm, &d3_data); 3104 if (ret) 3105 goto err; 3106 } else { 3107 ret = iwl_mvm_resume_firmware(mvm); 3108 if (ret < 0) 3109 goto err; 3110 } 3111 3112 /* when reset is required we can't send these following commands */ 3113 if (d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE) 3114 goto query_wakeup_reasons; 3115 3116 /* 3117 * Query the current location and source from the D3 firmware so we 3118 * can play it back when we re-intiailize the D0 firmware 3119 */ 3120 iwl_mvm_update_changed_regdom(mvm); 3121 3122 /* Re-configure PPAG settings */ 3123 iwl_mvm_ppag_send_cmd(mvm); 3124 3125 if (!unified_image) 3126 /* Re-configure default SAR profile */ 3127 iwl_mvm_sar_select_profile(mvm, 1, 1); 3128 3129 if (mvm->net_detect && unified_image) { 3130 /* If this is a non-unified image, we restart the FW, 3131 * so no need to stop the netdetect scan. If that 3132 * fails, continue and try to get the wake-up reasons, 3133 * but trigger a HW restart by keeping a failure code 3134 * in ret. 3135 */ 3136 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT, 3137 false); 3138 } 3139 3140 query_wakeup_reasons: 3141 keep = iwl_mvm_choose_query_wakeup_reasons(mvm, vif, &d3_data); 3142 /* has unlocked the mutex, so skip that */ 3143 goto out; 3144 3145 err: 3146 mutex_unlock(&mvm->mutex); 3147 out: 3148 if (d3_data.status) 3149 kfree(d3_data.status->wake_packet); 3150 kfree(d3_data.status); 3151 iwl_mvm_free_nd(mvm); 3152 3153 if (!mvm->net_detect) 3154 ieee80211_iterate_active_interfaces_mtx(mvm->hw, 3155 IEEE80211_IFACE_ITER_NORMAL, 3156 iwl_mvm_d3_disconnect_iter, 3157 keep ? vif : NULL); 3158 3159 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 3160 3161 /* no need to reset the device in unified images, if successful */ 3162 if (unified_image && !ret) { 3163 /* nothing else to do if we already sent D0I3_END_CMD */ 3164 if (d0i3_first) 3165 return 0; 3166 3167 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3168 D3_END_NOTIFICATION, 0)) { 3169 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL); 3170 if (!ret) 3171 return 0; 3172 } else if (!(d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)) { 3173 return 0; 3174 } 3175 } 3176 3177 /* 3178 * Reconfigure the device in one of the following cases: 3179 * 1. We are not using a unified image 3180 * 2. We are using a unified image but had an error while exiting D3 3181 */ 3182 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); 3183 3184 return 1; 3185 } 3186 3187 int iwl_mvm_resume(struct ieee80211_hw *hw) 3188 { 3189 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3190 int ret; 3191 3192 ret = __iwl_mvm_resume(mvm); 3193 3194 iwl_mvm_resume_tcm(mvm); 3195 3196 iwl_fw_runtime_resume(&mvm->fwrt); 3197 3198 return ret; 3199 } 3200 3201 void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled) 3202 { 3203 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3204 3205 device_set_wakeup_enable(mvm->trans->dev, enabled); 3206 } 3207 3208 void iwl_mvm_fast_suspend(struct iwl_mvm *mvm) 3209 { 3210 struct iwl_d3_manager_config d3_cfg_cmd_data = {}; 3211 int ret; 3212 3213 lockdep_assert_held(&mvm->mutex); 3214 3215 IWL_DEBUG_WOWLAN(mvm, "Starting fast suspend flow\n"); 3216 3217 iwl_mvm_pause_tcm(mvm, true); 3218 3219 mvm->fast_resume = true; 3220 set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 3221 3222 WARN_ON(iwl_mvm_power_update_device(mvm)); 3223 ret = iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD, 0, 3224 sizeof(d3_cfg_cmd_data), &d3_cfg_cmd_data); 3225 if (ret) 3226 IWL_ERR(mvm, 3227 "fast suspend: couldn't send D3_CONFIG_CMD %d\n", ret); 3228 3229 ret = iwl_trans_d3_suspend(mvm->trans, false); 3230 if (ret) 3231 IWL_ERR(mvm, "fast suspend: trans_d3_suspend failed %d\n", ret); 3232 } 3233 3234 int iwl_mvm_fast_resume(struct iwl_mvm *mvm) 3235 { 3236 struct iwl_d3_data d3_data = { 3237 .notif_expected = 3238 IWL_D3_NOTIF_D3_END_NOTIF, 3239 }; 3240 enum rt_status rt_status; 3241 int ret; 3242 3243 lockdep_assert_held(&mvm->mutex); 3244 3245 IWL_DEBUG_WOWLAN(mvm, "Starting the fast resume flow\n"); 3246 3247 mvm->last_reset_or_resume_time_jiffies = jiffies; 3248 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt); 3249 3250 rt_status = iwl_mvm_check_rt_status(mvm, NULL); 3251 if (rt_status != FW_ALIVE) { 3252 iwl_trans_notify_fw_error(mvm->trans); 3253 if (rt_status == FW_ERROR) { 3254 IWL_ERR(mvm, 3255 "iwl_mvm_check_rt_status failed, device is gone during suspend\n"); 3256 iwl_mvm_dump_nic_error_log(mvm); 3257 iwl_dbg_tlv_time_point(&mvm->fwrt, 3258 IWL_FW_INI_TIME_POINT_FW_ASSERT, 3259 NULL); 3260 iwl_fw_dbg_collect_desc(&mvm->fwrt, 3261 &iwl_dump_desc_assert, 3262 false, 0); 3263 } 3264 ret = -ENODEV; 3265 3266 goto out; 3267 } 3268 ret = iwl_mvm_d3_notif_wait(mvm, &d3_data); 3269 3270 if (ret) { 3271 IWL_ERR(mvm, "Couldn't get the d3 notif %d\n", ret); 3272 mvm->trans->state = IWL_TRANS_NO_FW; 3273 } 3274 3275 iwl_mvm_resume_tcm(mvm); 3276 3277 out: 3278 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 3279 mvm->fast_resume = false; 3280 3281 return ret; 3282 } 3283