1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2014, 2018-2025 Intel Corporation 4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH 5 * Copyright (C) 2016-2017 Intel Deutschland GmbH 6 */ 7 #include <linux/etherdevice.h> 8 #include <linux/ip.h> 9 #include <linux/fs.h> 10 #if defined(__FreeBSD__) 11 #include <linux/string.h> 12 #include <linux/delay.h> 13 #endif 14 #include <net/cfg80211.h> 15 #include <net/ipv6.h> 16 #include <net/tcp.h> 17 #include <net/addrconf.h> 18 #include "iwl-modparams.h" 19 #include "fw-api.h" 20 #include "mvm.h" 21 #include "fw/img.h" 22 23 void iwl_mvm_set_rekey_data(struct ieee80211_hw *hw, 24 struct ieee80211_vif *vif, 25 struct cfg80211_gtk_rekey_data *data) 26 { 27 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 28 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 29 30 mutex_lock(&mvm->mutex); 31 32 mvmvif->rekey_data.kek_len = data->kek_len; 33 mvmvif->rekey_data.kck_len = data->kck_len; 34 memcpy(mvmvif->rekey_data.kek, data->kek, data->kek_len); 35 memcpy(mvmvif->rekey_data.kck, data->kck, data->kck_len); 36 mvmvif->rekey_data.akm = data->akm & 0xFF; 37 mvmvif->rekey_data.replay_ctr = 38 cpu_to_le64(be64_to_cpup((const __be64 *)data->replay_ctr)); 39 mvmvif->rekey_data.valid = true; 40 41 mutex_unlock(&mvm->mutex); 42 } 43 44 #if IS_ENABLED(CONFIG_IPV6) 45 void iwl_mvm_ipv6_addr_change(struct ieee80211_hw *hw, 46 struct ieee80211_vif *vif, 47 struct inet6_dev *idev) 48 { 49 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 50 struct inet6_ifaddr *ifa; 51 int idx = 0; 52 53 memset(mvmvif->tentative_addrs, 0, sizeof(mvmvif->tentative_addrs)); 54 55 read_lock_bh(&idev->lock); 56 list_for_each_entry(ifa, &idev->addr_list, if_list) { 57 mvmvif->target_ipv6_addrs[idx] = ifa->addr; 58 if (ifa->flags & IFA_F_TENTATIVE) 59 __set_bit(idx, mvmvif->tentative_addrs); 60 idx++; 61 if (idx >= IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_MAX) 62 break; 63 } 64 read_unlock_bh(&idev->lock); 65 66 mvmvif->num_target_ipv6_addrs = idx; 67 } 68 #endif 69 70 void iwl_mvm_set_default_unicast_key(struct ieee80211_hw *hw, 71 struct ieee80211_vif *vif, int idx) 72 { 73 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 74 75 mvmvif->tx_key_idx = idx; 76 } 77 78 static void iwl_mvm_convert_p1k(u16 *p1k, __le16 *out) 79 { 80 int i; 81 82 for (i = 0; i < IWL_P1K_SIZE; i++) 83 out[i] = cpu_to_le16(p1k[i]); 84 } 85 86 static const u8 *iwl_mvm_find_max_pn(struct ieee80211_key_conf *key, 87 struct iwl_mvm_key_pn *ptk_pn, 88 struct ieee80211_key_seq *seq, 89 int tid, int queues) 90 { 91 const u8 *ret = seq->ccmp.pn; 92 int i; 93 94 /* get the PN from mac80211, used on the default queue */ 95 ieee80211_get_key_rx_seq(key, tid, seq); 96 97 /* and use the internal data for the other queues */ 98 for (i = 1; i < queues; i++) { 99 const u8 *tmp = ptk_pn->q[i].pn[tid]; 100 101 if (memcmp(ret, tmp, IEEE80211_CCMP_PN_LEN) <= 0) 102 ret = tmp; 103 } 104 105 return ret; 106 } 107 108 struct wowlan_key_reprogram_data { 109 bool error; 110 int wep_key_idx; 111 }; 112 113 static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw, 114 struct ieee80211_vif *vif, 115 struct ieee80211_sta *sta, 116 struct ieee80211_key_conf *key, 117 void *_data) 118 { 119 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 120 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 121 struct wowlan_key_reprogram_data *data = _data; 122 int ret; 123 124 switch (key->cipher) { 125 case WLAN_CIPHER_SUITE_WEP40: 126 case WLAN_CIPHER_SUITE_WEP104: { /* hack it for now */ 127 DEFINE_RAW_FLEX(struct iwl_mvm_wep_key_cmd, wkc, wep_key, 1); 128 struct iwl_mvm_wep_key *wep_key = wkc->wep_key; 129 130 wkc->mac_id_n_color = 131 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 132 mvmvif->color)); 133 wkc->num_keys = 1; 134 /* firmware sets STA_KEY_FLG_WEP_13BYTES */ 135 wkc->decryption_type = STA_KEY_FLG_WEP; 136 wep_key->key_index = key->keyidx; 137 wep_key->key_size = key->keylen; 138 139 /* 140 * This will fail -- the key functions don't set support 141 * pairwise WEP keys. However, that's better than silently 142 * failing WoWLAN. Or maybe not? 143 */ 144 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) 145 break; 146 147 memcpy(&wep_key->key[3], key->key, key->keylen); 148 if (key->keyidx == mvmvif->tx_key_idx) { 149 /* TX key must be at offset 0 */ 150 wep_key->key_offset = 0; 151 } else { 152 /* others start at 1 */ 153 data->wep_key_idx++; 154 wep_key->key_offset = data->wep_key_idx; 155 } 156 157 mutex_lock(&mvm->mutex); 158 ret = iwl_mvm_send_cmd_pdu(mvm, WEP_KEY, 0, 159 __struct_size(wkc), wkc); 160 data->error = ret != 0; 161 162 mvm->ptk_ivlen = key->iv_len; 163 mvm->ptk_icvlen = key->icv_len; 164 mvm->gtk_ivlen = key->iv_len; 165 mvm->gtk_icvlen = key->icv_len; 166 mutex_unlock(&mvm->mutex); 167 168 /* don't upload key again */ 169 return; 170 } 171 default: 172 data->error = true; 173 return; 174 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 175 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 176 return; 177 case WLAN_CIPHER_SUITE_AES_CMAC: 178 /* 179 * Ignore CMAC keys -- the WoWLAN firmware doesn't support them 180 * but we also shouldn't abort suspend due to that. It does have 181 * support for the IGTK key renewal, but doesn't really use the 182 * IGTK for anything. This means we could spuriously wake up or 183 * be deauthenticated, but that was considered acceptable. 184 */ 185 return; 186 case WLAN_CIPHER_SUITE_TKIP: 187 case WLAN_CIPHER_SUITE_CCMP: 188 case WLAN_CIPHER_SUITE_GCMP: 189 case WLAN_CIPHER_SUITE_GCMP_256: 190 break; 191 } 192 193 mutex_lock(&mvm->mutex); 194 /* 195 * The D3 firmware hardcodes the key offset 0 as the key it 196 * uses to transmit packets to the AP, i.e. the PTK. 197 */ 198 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) { 199 mvm->ptk_ivlen = key->iv_len; 200 mvm->ptk_icvlen = key->icv_len; 201 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 0); 202 } else { 203 /* 204 * firmware only supports TSC/RSC for a single key, 205 * so if there are multiple keep overwriting them 206 * with new ones -- this relies on mac80211 doing 207 * list_add_tail(). 208 */ 209 mvm->gtk_ivlen = key->iv_len; 210 mvm->gtk_icvlen = key->icv_len; 211 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 1); 212 } 213 mutex_unlock(&mvm->mutex); 214 data->error = ret != 0; 215 } 216 217 struct wowlan_key_rsc_tsc_data { 218 struct iwl_wowlan_rsc_tsc_params_cmd_ver_2 *rsc_tsc; 219 bool have_rsc_tsc; 220 }; 221 222 static void iwl_mvm_wowlan_get_rsc_tsc_data(struct ieee80211_hw *hw, 223 struct ieee80211_vif *vif, 224 struct ieee80211_sta *sta, 225 struct ieee80211_key_conf *key, 226 void *_data) 227 { 228 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 229 struct wowlan_key_rsc_tsc_data *data = _data; 230 struct aes_sc *aes_sc; 231 struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL; 232 struct ieee80211_key_seq seq; 233 int i; 234 235 switch (key->cipher) { 236 default: 237 break; 238 case WLAN_CIPHER_SUITE_TKIP: 239 if (sta) { 240 u64 pn64; 241 242 tkip_sc = 243 data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc; 244 tkip_tx_sc = 245 &data->rsc_tsc->all_tsc_rsc.tkip.tsc; 246 247 pn64 = atomic64_read(&key->tx_pn); 248 tkip_tx_sc->iv16 = cpu_to_le16(TKIP_PN_TO_IV16(pn64)); 249 tkip_tx_sc->iv32 = cpu_to_le32(TKIP_PN_TO_IV32(pn64)); 250 } else { 251 tkip_sc = 252 data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc; 253 } 254 255 /* 256 * For non-QoS this relies on the fact that both the uCode and 257 * mac80211 use TID 0 (as they need to avoid replay attacks) 258 * for checking the IV in the frames. 259 */ 260 for (i = 0; i < IWL_NUM_RSC; i++) { 261 ieee80211_get_key_rx_seq(key, i, &seq); 262 tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16); 263 tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32); 264 } 265 266 data->have_rsc_tsc = true; 267 break; 268 case WLAN_CIPHER_SUITE_CCMP: 269 case WLAN_CIPHER_SUITE_GCMP: 270 case WLAN_CIPHER_SUITE_GCMP_256: 271 if (sta) { 272 struct aes_sc *aes_tx_sc; 273 u64 pn64; 274 275 aes_sc = 276 data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc; 277 aes_tx_sc = 278 &data->rsc_tsc->all_tsc_rsc.aes.tsc; 279 280 pn64 = atomic64_read(&key->tx_pn); 281 aes_tx_sc->pn = cpu_to_le64(pn64); 282 } else { 283 aes_sc = 284 data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc; 285 } 286 287 /* 288 * For non-QoS this relies on the fact that both the uCode and 289 * mac80211/our RX code use TID 0 for checking the PN. 290 */ 291 if (sta && iwl_mvm_has_new_rx_api(mvm)) { 292 struct iwl_mvm_sta *mvmsta; 293 struct iwl_mvm_key_pn *ptk_pn; 294 const u8 *pn; 295 296 mvmsta = iwl_mvm_sta_from_mac80211(sta); 297 rcu_read_lock(); 298 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]); 299 if (WARN_ON(!ptk_pn)) { 300 rcu_read_unlock(); 301 break; 302 } 303 304 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 305 pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i, 306 mvm->trans->info.num_rxqs); 307 aes_sc[i].pn = cpu_to_le64((u64)pn[5] | 308 ((u64)pn[4] << 8) | 309 ((u64)pn[3] << 16) | 310 ((u64)pn[2] << 24) | 311 ((u64)pn[1] << 32) | 312 ((u64)pn[0] << 40)); 313 } 314 315 rcu_read_unlock(); 316 } else { 317 for (i = 0; i < IWL_NUM_RSC; i++) { 318 u8 *pn = seq.ccmp.pn; 319 320 ieee80211_get_key_rx_seq(key, i, &seq); 321 aes_sc[i].pn = cpu_to_le64((u64)pn[5] | 322 ((u64)pn[4] << 8) | 323 ((u64)pn[3] << 16) | 324 ((u64)pn[2] << 24) | 325 ((u64)pn[1] << 32) | 326 ((u64)pn[0] << 40)); 327 } 328 } 329 data->have_rsc_tsc = true; 330 break; 331 } 332 } 333 334 struct wowlan_key_rsc_v5_data { 335 struct iwl_wowlan_rsc_tsc_params_cmd *rsc; 336 bool have_rsc; 337 int gtks; 338 int gtk_ids[4]; 339 }; 340 341 static void iwl_mvm_wowlan_get_rsc_v5_data(struct ieee80211_hw *hw, 342 struct ieee80211_vif *vif, 343 struct ieee80211_sta *sta, 344 struct ieee80211_key_conf *key, 345 void *_data) 346 { 347 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 348 struct wowlan_key_rsc_v5_data *data = _data; 349 struct ieee80211_key_seq seq; 350 __le64 *rsc; 351 int i; 352 353 /* only for ciphers that can be PTK/GTK */ 354 switch (key->cipher) { 355 default: 356 return; 357 case WLAN_CIPHER_SUITE_TKIP: 358 case WLAN_CIPHER_SUITE_CCMP: 359 case WLAN_CIPHER_SUITE_GCMP: 360 case WLAN_CIPHER_SUITE_GCMP_256: 361 break; 362 } 363 364 if (sta) { 365 rsc = data->rsc->ucast_rsc; 366 } else { 367 if (WARN_ON(data->gtks >= ARRAY_SIZE(data->gtk_ids))) 368 return; 369 data->gtk_ids[data->gtks] = key->keyidx; 370 rsc = data->rsc->mcast_rsc[data->gtks % 2]; 371 if (WARN_ON(key->keyidx >= 372 ARRAY_SIZE(data->rsc->mcast_key_id_map))) 373 return; 374 data->rsc->mcast_key_id_map[key->keyidx] = data->gtks % 2; 375 if (data->gtks >= 2) { 376 int prev = data->gtks - 2; 377 int prev_idx = data->gtk_ids[prev]; 378 379 data->rsc->mcast_key_id_map[prev_idx] = 380 IWL_MCAST_KEY_MAP_INVALID; 381 } 382 data->gtks++; 383 } 384 385 switch (key->cipher) { 386 default: 387 WARN_ON(1); 388 break; 389 case WLAN_CIPHER_SUITE_TKIP: 390 391 /* 392 * For non-QoS this relies on the fact that both the uCode and 393 * mac80211 use TID 0 (as they need to avoid replay attacks) 394 * for checking the IV in the frames. 395 */ 396 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 397 ieee80211_get_key_rx_seq(key, i, &seq); 398 399 rsc[i] = cpu_to_le64(((u64)seq.tkip.iv32 << 16) | 400 seq.tkip.iv16); 401 } 402 403 data->have_rsc = true; 404 break; 405 case WLAN_CIPHER_SUITE_CCMP: 406 case WLAN_CIPHER_SUITE_GCMP: 407 case WLAN_CIPHER_SUITE_GCMP_256: 408 /* 409 * For non-QoS this relies on the fact that both the uCode and 410 * mac80211/our RX code use TID 0 for checking the PN. 411 */ 412 if (sta) { 413 struct iwl_mvm_sta *mvmsta; 414 struct iwl_mvm_key_pn *ptk_pn; 415 const u8 *pn; 416 417 mvmsta = iwl_mvm_sta_from_mac80211(sta); 418 rcu_read_lock(); 419 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]); 420 if (WARN_ON(!ptk_pn)) { 421 rcu_read_unlock(); 422 break; 423 } 424 425 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 426 pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i, 427 mvm->trans->info.num_rxqs); 428 rsc[i] = cpu_to_le64((u64)pn[5] | 429 ((u64)pn[4] << 8) | 430 ((u64)pn[3] << 16) | 431 ((u64)pn[2] << 24) | 432 ((u64)pn[1] << 32) | 433 ((u64)pn[0] << 40)); 434 } 435 436 rcu_read_unlock(); 437 } else { 438 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 439 u8 *pn = seq.ccmp.pn; 440 441 ieee80211_get_key_rx_seq(key, i, &seq); 442 rsc[i] = cpu_to_le64((u64)pn[5] | 443 ((u64)pn[4] << 8) | 444 ((u64)pn[3] << 16) | 445 ((u64)pn[2] << 24) | 446 ((u64)pn[1] << 32) | 447 ((u64)pn[0] << 40)); 448 } 449 } 450 data->have_rsc = true; 451 break; 452 } 453 } 454 455 static int iwl_mvm_wowlan_config_rsc_tsc(struct iwl_mvm *mvm, 456 struct ieee80211_vif *vif, 457 struct iwl_mvm_vif_link_info *mvm_link) 458 { 459 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TSC_RSC_PARAM, 460 IWL_FW_CMD_VER_UNKNOWN); 461 int ret; 462 463 if (ver == 5) { 464 struct wowlan_key_rsc_v5_data data = {}; 465 int i; 466 467 data.rsc = kzalloc(sizeof(*data.rsc), GFP_KERNEL); 468 if (!data.rsc) 469 return -ENOMEM; 470 471 for (i = 0; i < ARRAY_SIZE(data.rsc->mcast_key_id_map); i++) 472 data.rsc->mcast_key_id_map[i] = 473 IWL_MCAST_KEY_MAP_INVALID; 474 data.rsc->sta_id = cpu_to_le32(mvm_link->ap_sta_id); 475 476 ieee80211_iter_keys(mvm->hw, vif, 477 iwl_mvm_wowlan_get_rsc_v5_data, 478 &data); 479 480 if (data.have_rsc) 481 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM, 482 CMD_ASYNC, sizeof(*data.rsc), 483 data.rsc); 484 else 485 ret = 0; 486 kfree(data.rsc); 487 } else if (ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN) { 488 struct wowlan_key_rsc_tsc_data data = {}; 489 490 data.rsc_tsc = kzalloc(sizeof(*data.rsc_tsc), GFP_KERNEL); 491 if (!data.rsc_tsc) 492 return -ENOMEM; 493 494 ieee80211_iter_keys(mvm->hw, vif, 495 iwl_mvm_wowlan_get_rsc_tsc_data, 496 &data); 497 498 if (data.have_rsc_tsc) 499 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM, 500 CMD_ASYNC, 501 sizeof(*data.rsc_tsc), 502 data.rsc_tsc); 503 else 504 ret = 0; 505 kfree(data.rsc_tsc); 506 } else { 507 ret = 0; 508 WARN_ON_ONCE(1); 509 } 510 511 return ret; 512 } 513 514 struct wowlan_key_tkip_data { 515 struct iwl_wowlan_tkip_params_cmd tkip; 516 bool have_tkip_keys; 517 }; 518 519 static void iwl_mvm_wowlan_get_tkip_data(struct ieee80211_hw *hw, 520 struct ieee80211_vif *vif, 521 struct ieee80211_sta *sta, 522 struct ieee80211_key_conf *key, 523 void *_data) 524 { 525 struct wowlan_key_tkip_data *data = _data; 526 struct iwl_p1k_cache *rx_p1ks; 527 u8 *rx_mic_key; 528 struct ieee80211_key_seq seq; 529 u32 cur_rx_iv32 = 0; 530 u16 p1k[IWL_P1K_SIZE]; 531 int i; 532 533 switch (key->cipher) { 534 default: 535 break; 536 case WLAN_CIPHER_SUITE_TKIP: 537 if (sta) { 538 u64 pn64; 539 540 rx_p1ks = data->tkip.rx_uni; 541 542 pn64 = atomic64_read(&key->tx_pn); 543 544 ieee80211_get_tkip_p1k_iv(key, TKIP_PN_TO_IV32(pn64), 545 p1k); 546 iwl_mvm_convert_p1k(p1k, data->tkip.tx.p1k); 547 548 memcpy(data->tkip.mic_keys.tx, 549 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], 550 IWL_MIC_KEY_SIZE); 551 552 rx_mic_key = data->tkip.mic_keys.rx_unicast; 553 } else { 554 rx_p1ks = data->tkip.rx_multi; 555 rx_mic_key = data->tkip.mic_keys.rx_mcast; 556 } 557 558 for (i = 0; i < IWL_NUM_RSC; i++) { 559 ieee80211_get_key_rx_seq(key, i, &seq); 560 /* wrapping isn't allowed, AP must rekey */ 561 if (seq.tkip.iv32 > cur_rx_iv32) 562 cur_rx_iv32 = seq.tkip.iv32; 563 } 564 565 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid, 566 cur_rx_iv32, p1k); 567 iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k); 568 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid, 569 cur_rx_iv32 + 1, p1k); 570 iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k); 571 572 memcpy(rx_mic_key, 573 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], 574 IWL_MIC_KEY_SIZE); 575 576 data->have_tkip_keys = true; 577 break; 578 } 579 } 580 581 struct wowlan_key_gtk_type_iter { 582 struct iwl_wowlan_kek_kck_material_cmd_v4 *kek_kck_cmd; 583 }; 584 585 static void iwl_mvm_wowlan_gtk_type_iter(struct ieee80211_hw *hw, 586 struct ieee80211_vif *vif, 587 struct ieee80211_sta *sta, 588 struct ieee80211_key_conf *key, 589 void *_data) 590 { 591 struct wowlan_key_gtk_type_iter *data = _data; 592 __le32 *cipher = NULL; 593 594 if (key->keyidx == 4 || key->keyidx == 5) 595 cipher = &data->kek_kck_cmd->igtk_cipher; 596 if (key->keyidx == 6 || key->keyidx == 7) 597 cipher = &data->kek_kck_cmd->bigtk_cipher; 598 599 switch (key->cipher) { 600 default: 601 return; 602 case WLAN_CIPHER_SUITE_TKIP: 603 if (!sta) 604 data->kek_kck_cmd->gtk_cipher = 605 cpu_to_le32(STA_KEY_FLG_TKIP); 606 return; 607 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 608 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 609 if (cipher) 610 *cipher = cpu_to_le32(STA_KEY_FLG_GCMP); 611 return; 612 case WLAN_CIPHER_SUITE_AES_CMAC: 613 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 614 if (cipher) 615 *cipher = cpu_to_le32(STA_KEY_FLG_CCM); 616 return; 617 case WLAN_CIPHER_SUITE_CCMP: 618 if (!sta) 619 data->kek_kck_cmd->gtk_cipher = 620 cpu_to_le32(STA_KEY_FLG_CCM); 621 return; 622 case WLAN_CIPHER_SUITE_GCMP: 623 case WLAN_CIPHER_SUITE_GCMP_256: 624 if (!sta) 625 data->kek_kck_cmd->gtk_cipher = 626 cpu_to_le32(STA_KEY_FLG_GCMP); 627 return; 628 } 629 } 630 631 static int iwl_mvm_send_patterns_v1(struct iwl_mvm *mvm, 632 struct cfg80211_wowlan *wowlan) 633 { 634 struct iwl_wowlan_patterns_cmd_v1 *pattern_cmd; 635 struct iwl_host_cmd cmd = { 636 .id = WOWLAN_PATTERNS, 637 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 638 }; 639 int i, err; 640 641 if (!wowlan->n_patterns) 642 return 0; 643 644 cmd.len[0] = struct_size(pattern_cmd, patterns, wowlan->n_patterns); 645 646 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL); 647 if (!pattern_cmd) 648 return -ENOMEM; 649 650 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns); 651 652 for (i = 0; i < wowlan->n_patterns; i++) { 653 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8); 654 655 memcpy(&pattern_cmd->patterns[i].mask, 656 wowlan->patterns[i].mask, mask_len); 657 memcpy(&pattern_cmd->patterns[i].pattern, 658 wowlan->patterns[i].pattern, 659 wowlan->patterns[i].pattern_len); 660 pattern_cmd->patterns[i].mask_size = mask_len; 661 pattern_cmd->patterns[i].pattern_size = 662 wowlan->patterns[i].pattern_len; 663 } 664 665 cmd.data[0] = pattern_cmd; 666 err = iwl_mvm_send_cmd(mvm, &cmd); 667 kfree(pattern_cmd); 668 return err; 669 } 670 671 static int iwl_mvm_send_patterns(struct iwl_mvm *mvm, 672 struct iwl_mvm_vif_link_info *mvm_link, 673 struct cfg80211_wowlan *wowlan) 674 { 675 struct iwl_wowlan_patterns_cmd *pattern_cmd; 676 struct iwl_host_cmd cmd = { 677 .id = WOWLAN_PATTERNS, 678 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 679 }; 680 int i, err; 681 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id, 682 IWL_FW_CMD_VER_UNKNOWN); 683 684 if (!wowlan->n_patterns) 685 return 0; 686 687 cmd.len[0] = sizeof(*pattern_cmd) + 688 wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern_v2); 689 690 pattern_cmd = kzalloc(cmd.len[0], GFP_KERNEL); 691 if (!pattern_cmd) 692 return -ENOMEM; 693 694 pattern_cmd->n_patterns = wowlan->n_patterns; 695 if (ver >= 3) 696 pattern_cmd->sta_id = mvm_link->ap_sta_id; 697 698 for (i = 0; i < wowlan->n_patterns; i++) { 699 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8); 700 701 pattern_cmd->patterns[i].pattern_type = 702 WOWLAN_PATTERN_TYPE_BITMASK; 703 704 memcpy(&pattern_cmd->patterns[i].u.bitmask.mask, 705 wowlan->patterns[i].mask, mask_len); 706 memcpy(&pattern_cmd->patterns[i].u.bitmask.pattern, 707 wowlan->patterns[i].pattern, 708 wowlan->patterns[i].pattern_len); 709 pattern_cmd->patterns[i].u.bitmask.mask_size = mask_len; 710 pattern_cmd->patterns[i].u.bitmask.pattern_size = 711 wowlan->patterns[i].pattern_len; 712 } 713 714 cmd.data[0] = pattern_cmd; 715 err = iwl_mvm_send_cmd(mvm, &cmd); 716 kfree(pattern_cmd); 717 return err; 718 } 719 720 static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 721 struct ieee80211_sta *ap_sta) 722 { 723 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 724 struct ieee80211_chanctx_conf *ctx; 725 u8 chains_static, chains_dynamic; 726 struct cfg80211_chan_def chandef, ap_def; 727 int ret, i; 728 struct iwl_binding_cmd_v1 binding_cmd = {}; 729 struct iwl_time_quota_cmd quota_cmd = {}; 730 struct iwl_time_quota_data *quota; 731 u32 status; 732 733 if (WARN_ON_ONCE(iwl_mvm_is_cdb_supported(mvm) || 734 ieee80211_vif_is_mld(vif))) 735 return -EINVAL; 736 737 /* add back the PHY */ 738 if (WARN_ON(!mvmvif->deflink.phy_ctxt)) 739 return -EINVAL; 740 741 rcu_read_lock(); 742 ctx = rcu_dereference(vif->bss_conf.chanctx_conf); 743 if (WARN_ON(!ctx)) { 744 rcu_read_unlock(); 745 return -EINVAL; 746 } 747 chandef = ctx->def; 748 ap_def = ctx->ap; 749 chains_static = ctx->rx_chains_static; 750 chains_dynamic = ctx->rx_chains_dynamic; 751 rcu_read_unlock(); 752 753 ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->deflink.phy_ctxt, &chandef, 754 &ap_def, chains_static, chains_dynamic); 755 if (ret) 756 return ret; 757 758 /* add back the MAC */ 759 mvmvif->uploaded = false; 760 761 if (WARN_ON(!vif->cfg.assoc)) 762 return -EINVAL; 763 764 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 765 if (ret) 766 return ret; 767 768 /* add back binding - XXX refactor? */ 769 binding_cmd.id_and_color = 770 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id, 771 mvmvif->deflink.phy_ctxt->color)); 772 binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD); 773 binding_cmd.phy = 774 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id, 775 mvmvif->deflink.phy_ctxt->color)); 776 binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 777 mvmvif->color)); 778 for (i = 1; i < MAX_MACS_IN_BINDING; i++) 779 binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID); 780 781 status = 0; 782 ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD, 783 IWL_BINDING_CMD_SIZE_V1, &binding_cmd, 784 &status); 785 if (ret) { 786 IWL_ERR(mvm, "Failed to add binding: %d\n", ret); 787 return ret; 788 } 789 790 if (status) { 791 IWL_ERR(mvm, "Binding command failed: %u\n", status); 792 return -EIO; 793 } 794 795 ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false, 0); 796 if (ret) 797 return ret; 798 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->deflink.ap_sta_id], 799 ap_sta); 800 801 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 802 if (ret) 803 return ret; 804 805 /* and some quota */ 806 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, 0); 807 quota->id_and_color = 808 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id, 809 mvmvif->deflink.phy_ctxt->color)); 810 quota->quota = cpu_to_le32(IWL_MVM_MAX_QUOTA); 811 quota->max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA); 812 813 for (i = 1; i < MAX_BINDINGS; i++) { 814 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, i); 815 quota->id_and_color = cpu_to_le32(FW_CTXT_INVALID); 816 } 817 818 ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0, 819 iwl_mvm_quota_cmd_size(mvm), "a_cmd); 820 if (ret) 821 IWL_ERR(mvm, "Failed to send quota: %d\n", ret); 822 823 if (iwl_mvm_is_lar_supported(mvm) && iwl_mvm_init_fw_regd(mvm, false)) 824 IWL_ERR(mvm, "Failed to initialize D3 LAR information\n"); 825 826 return 0; 827 } 828 829 static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm, 830 struct ieee80211_vif *vif) 831 { 832 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 833 struct iwl_nonqos_seq_query_cmd query_cmd = { 834 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET), 835 .mac_id_n_color = 836 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 837 mvmvif->color)), 838 }; 839 struct iwl_host_cmd cmd = { 840 .id = NON_QOS_TX_COUNTER_CMD, 841 .flags = CMD_WANT_SKB, 842 }; 843 int err; 844 u32 size; 845 846 cmd.data[0] = &query_cmd; 847 cmd.len[0] = sizeof(query_cmd); 848 849 err = iwl_mvm_send_cmd(mvm, &cmd); 850 if (err) 851 return err; 852 853 size = iwl_rx_packet_payload_len(cmd.resp_pkt); 854 if (size < sizeof(__le16)) { 855 err = -EINVAL; 856 } else { 857 err = le16_to_cpup((__le16 *)cmd.resp_pkt->data); 858 /* firmware returns next, not last-used seqno */ 859 err = (u16) (err - 0x10); 860 } 861 862 iwl_free_resp(&cmd); 863 return err; 864 } 865 866 void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 867 { 868 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 869 struct iwl_nonqos_seq_query_cmd query_cmd = { 870 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET), 871 .mac_id_n_color = 872 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 873 mvmvif->color)), 874 .value = cpu_to_le16(mvmvif->seqno), 875 }; 876 877 /* return if called during restart, not resume from D3 */ 878 if (!mvmvif->seqno_valid) 879 return; 880 881 mvmvif->seqno_valid = false; 882 883 if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0, 884 sizeof(query_cmd), &query_cmd)) 885 IWL_ERR(mvm, "failed to set non-QoS seqno\n"); 886 } 887 888 static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm) 889 { 890 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 891 892 iwl_mvm_stop_device(mvm); 893 /* 894 * Set the HW restart bit -- this is mostly true as we're 895 * going to load new firmware and reprogram that, though 896 * the reprogramming is going to be manual to avoid adding 897 * all the MACs that aren't support. 898 * We don't have to clear up everything though because the 899 * reprogramming is manual. When we resume, we'll actually 900 * go through a proper restart sequence again to switch 901 * back to the runtime firmware image. 902 */ 903 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 904 905 /* the fw is reset, so all the keys are cleared */ 906 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); 907 908 mvm->ptk_ivlen = 0; 909 mvm->ptk_icvlen = 0; 910 mvm->ptk_ivlen = 0; 911 mvm->ptk_icvlen = 0; 912 913 return iwl_mvm_load_d3_fw(mvm); 914 } 915 916 static int 917 iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm, 918 struct cfg80211_wowlan *wowlan, 919 struct iwl_wowlan_config_cmd_v6 *wowlan_config_cmd, 920 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif, 921 struct ieee80211_sta *ap_sta) 922 { 923 struct iwl_mvm_sta *mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta); 924 925 /* TODO: wowlan_config_cmd->wowlan_ba_teardown_tids */ 926 927 wowlan_config_cmd->is_11n_connection = 928 ap_sta->deflink.ht_cap.ht_supported; 929 wowlan_config_cmd->flags = ENABLE_L3_FILTERING | 930 ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING; 931 932 if (ap_sta->mfp) 933 wowlan_config_cmd->flags |= IS_11W_ASSOC; 934 935 if (iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_CONFIGURATION, 0) < 6) { 936 /* Query the last used seqno and set it */ 937 int ret = iwl_mvm_get_last_nonqos_seq(mvm, vif); 938 939 if (ret < 0) 940 return ret; 941 942 wowlan_config_cmd->non_qos_seq = cpu_to_le16(ret); 943 } 944 945 if (iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_CONFIGURATION, 0) < 7) 946 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, wowlan_config_cmd); 947 948 if (wowlan->disconnect) 949 wowlan_config_cmd->wakeup_filter |= 950 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS | 951 IWL_WOWLAN_WAKEUP_LINK_CHANGE); 952 if (wowlan->magic_pkt) 953 wowlan_config_cmd->wakeup_filter |= 954 cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET); 955 if (wowlan->gtk_rekey_failure) 956 wowlan_config_cmd->wakeup_filter |= 957 cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL); 958 if (wowlan->eap_identity_req) 959 wowlan_config_cmd->wakeup_filter |= 960 cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ); 961 if (wowlan->four_way_handshake) 962 wowlan_config_cmd->wakeup_filter |= 963 cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE); 964 if (wowlan->n_patterns) 965 wowlan_config_cmd->wakeup_filter |= 966 cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH); 967 968 if (wowlan->rfkill_release) 969 wowlan_config_cmd->wakeup_filter |= 970 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT); 971 972 if (wowlan->tcp) { 973 /* 974 * Set the "link change" (really "link lost") flag as well 975 * since that implies losing the TCP connection. 976 */ 977 wowlan_config_cmd->wakeup_filter |= 978 cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS | 979 IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE | 980 IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET | 981 IWL_WOWLAN_WAKEUP_LINK_CHANGE); 982 } 983 984 if (wowlan->any) { 985 wowlan_config_cmd->wakeup_filter |= 986 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS | 987 IWL_WOWLAN_WAKEUP_LINK_CHANGE | 988 IWL_WOWLAN_WAKEUP_RX_FRAME | 989 IWL_WOWLAN_WAKEUP_BCN_FILTERING); 990 } 991 992 return 0; 993 } 994 995 static int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm, 996 struct ieee80211_vif *vif, 997 struct iwl_mvm_vif_link_info *mvm_link) 998 { 999 bool unified = fw_has_capa(&mvm->fw->ucode_capa, 1000 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1001 struct wowlan_key_reprogram_data key_data = {}; 1002 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1003 int ret; 1004 u8 cmd_ver; 1005 size_t cmd_size; 1006 1007 if (!unified) { 1008 /* 1009 * if we have to configure keys, call ieee80211_iter_keys(), 1010 * as we need non-atomic context in order to take the 1011 * required locks. 1012 */ 1013 /* 1014 * Note that currently we don't use CMD_ASYNC in the iterator. 1015 * In case of key_data.configure_keys, all the configured 1016 * commands are SYNC, and iwl_mvm_wowlan_program_keys() will 1017 * take care of locking/unlocking mvm->mutex. 1018 */ 1019 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_program_keys, 1020 &key_data); 1021 1022 if (key_data.error) 1023 return -EIO; 1024 } 1025 1026 ret = iwl_mvm_wowlan_config_rsc_tsc(mvm, vif, mvm_link); 1027 if (ret) 1028 return ret; 1029 1030 if (!fw_has_api(&mvm->fw->ucode_capa, 1031 IWL_UCODE_TLV_API_TKIP_MIC_KEYS)) { 1032 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TKIP_PARAM, 1033 IWL_FW_CMD_VER_UNKNOWN); 1034 struct wowlan_key_tkip_data tkip_data = {}; 1035 int size; 1036 1037 if (ver == 2) { 1038 size = sizeof(tkip_data.tkip); 1039 tkip_data.tkip.sta_id = 1040 cpu_to_le32(mvm_link->ap_sta_id); 1041 } else if (ver == 1 || ver == IWL_FW_CMD_VER_UNKNOWN) { 1042 size = sizeof(struct iwl_wowlan_tkip_params_cmd_ver_1); 1043 } else { 1044 WARN_ON_ONCE(1); 1045 return -EINVAL; 1046 } 1047 1048 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_get_tkip_data, 1049 &tkip_data); 1050 1051 if (tkip_data.have_tkip_keys) { 1052 /* send relevant data according to CMD version */ 1053 ret = iwl_mvm_send_cmd_pdu(mvm, 1054 WOWLAN_TKIP_PARAM, 1055 CMD_ASYNC, size, 1056 &tkip_data.tkip); 1057 if (ret) 1058 return ret; 1059 } 1060 } 1061 1062 /* configure rekey data only if offloaded rekey is supported (d3) */ 1063 if (mvmvif->rekey_data.valid) { 1064 struct iwl_wowlan_kek_kck_material_cmd_v4 kek_kck_cmd = {}; 1065 struct iwl_wowlan_kek_kck_material_cmd_v4 *_kek_kck_cmd = 1066 &kek_kck_cmd; 1067 struct wowlan_key_gtk_type_iter gtk_type_data = { 1068 .kek_kck_cmd = _kek_kck_cmd, 1069 }; 1070 1071 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, 1072 WOWLAN_KEK_KCK_MATERIAL, 1073 IWL_FW_CMD_VER_UNKNOWN); 1074 if (WARN_ON(cmd_ver != 2 && cmd_ver != 3 && cmd_ver != 4 && 1075 cmd_ver != IWL_FW_CMD_VER_UNKNOWN)) 1076 return -EINVAL; 1077 1078 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_gtk_type_iter, 1079 >k_type_data); 1080 1081 memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck, 1082 mvmvif->rekey_data.kck_len); 1083 kek_kck_cmd.kck_len = cpu_to_le16(mvmvif->rekey_data.kck_len); 1084 memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek, 1085 mvmvif->rekey_data.kek_len); 1086 kek_kck_cmd.kek_len = cpu_to_le16(mvmvif->rekey_data.kek_len); 1087 kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr; 1088 kek_kck_cmd.akm = cpu_to_le32(mvmvif->rekey_data.akm); 1089 kek_kck_cmd.sta_id = cpu_to_le32(mvm_link->ap_sta_id); 1090 1091 if (cmd_ver == 4) { 1092 cmd_size = sizeof(struct iwl_wowlan_kek_kck_material_cmd_v4); 1093 } else { 1094 if (cmd_ver == 3) 1095 cmd_size = 1096 sizeof(struct iwl_wowlan_kek_kck_material_cmd_v3); 1097 else 1098 cmd_size = 1099 sizeof(struct iwl_wowlan_kek_kck_material_cmd_v2); 1100 /* skip the sta_id at the beginning */ 1101 _kek_kck_cmd = (void *) 1102 ((u8 *)_kek_kck_cmd + sizeof(kek_kck_cmd.sta_id)); 1103 } 1104 1105 IWL_DEBUG_WOWLAN(mvm, "setting akm %d\n", 1106 mvmvif->rekey_data.akm); 1107 1108 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_KEK_KCK_MATERIAL, 1109 CMD_ASYNC, cmd_size, _kek_kck_cmd); 1110 if (ret) 1111 return ret; 1112 } 1113 1114 return 0; 1115 } 1116 1117 static int 1118 iwl_mvm_wowlan_config(struct iwl_mvm *mvm, 1119 struct cfg80211_wowlan *wowlan, 1120 struct iwl_wowlan_config_cmd_v6 *wowlan_config_cmd_v6, 1121 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif, 1122 struct iwl_mvm_vif_link_info *mvm_link, 1123 struct ieee80211_sta *ap_sta) 1124 { 1125 int ret; 1126 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 1127 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1128 1129 mvm->offload_tid = wowlan_config_cmd_v6->offloading_tid; 1130 1131 if (!unified_image) { 1132 ret = iwl_mvm_switch_to_d3(mvm); 1133 if (ret) 1134 return ret; 1135 1136 ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta); 1137 if (ret) 1138 return ret; 1139 } 1140 1141 ret = iwl_mvm_wowlan_config_key_params(mvm, vif, mvm_link); 1142 if (ret) 1143 return ret; 1144 1145 if (iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_CONFIGURATION, 0) > 6) { 1146 struct iwl_wowlan_config_cmd wowlan_config_cmd = { 1147 .wakeup_filter = wowlan_config_cmd_v6->wakeup_filter, 1148 .wowlan_ba_teardown_tids = 1149 wowlan_config_cmd_v6->wowlan_ba_teardown_tids, 1150 .is_11n_connection = 1151 wowlan_config_cmd_v6->is_11n_connection, 1152 .offloading_tid = wowlan_config_cmd_v6->offloading_tid, 1153 .flags = wowlan_config_cmd_v6->flags, 1154 .sta_id = wowlan_config_cmd_v6->sta_id, 1155 }; 1156 1157 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0, 1158 sizeof(wowlan_config_cmd), 1159 &wowlan_config_cmd); 1160 } else { 1161 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0, 1162 sizeof(*wowlan_config_cmd_v6), 1163 wowlan_config_cmd_v6); 1164 } 1165 if (ret) 1166 return ret; 1167 1168 if (fw_has_api(&mvm->fw->ucode_capa, 1169 IWL_UCODE_TLV_API_WOWLAN_TCP_SYN_WAKE)) 1170 ret = iwl_mvm_send_patterns(mvm, mvm_link, wowlan); 1171 else 1172 ret = iwl_mvm_send_patterns_v1(mvm, wowlan); 1173 if (ret) 1174 return ret; 1175 1176 return iwl_mvm_send_proto_offload(mvm, vif, false, true, 0, 1177 mvm_link->ap_sta_id); 1178 } 1179 1180 static int 1181 iwl_mvm_netdetect_config(struct iwl_mvm *mvm, 1182 struct cfg80211_wowlan *wowlan, 1183 struct cfg80211_sched_scan_request *nd_config, 1184 struct ieee80211_vif *vif) 1185 { 1186 int ret; 1187 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 1188 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1189 1190 if (!unified_image) { 1191 ret = iwl_mvm_switch_to_d3(mvm); 1192 if (ret) 1193 return ret; 1194 } else { 1195 /* In theory, we wouldn't have to stop a running sched 1196 * scan in order to start another one (for 1197 * net-detect). But in practice this doesn't seem to 1198 * work properly, so stop any running sched_scan now. 1199 */ 1200 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 1201 if (ret) 1202 return ret; 1203 } 1204 1205 ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies, 1206 IWL_MVM_SCAN_NETDETECT); 1207 if (ret) 1208 return ret; 1209 1210 if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels)) 1211 return -EBUSY; 1212 1213 /* save the sched scan matchsets... */ 1214 if (nd_config->n_match_sets) { 1215 mvm->nd_match_sets = kmemdup(nd_config->match_sets, 1216 sizeof(*nd_config->match_sets) * 1217 nd_config->n_match_sets, 1218 GFP_KERNEL); 1219 if (mvm->nd_match_sets) 1220 mvm->n_nd_match_sets = nd_config->n_match_sets; 1221 } 1222 1223 /* ...and the sched scan channels for later reporting */ 1224 mvm->nd_channels = kmemdup(nd_config->channels, 1225 sizeof(*nd_config->channels) * 1226 nd_config->n_channels, 1227 GFP_KERNEL); 1228 if (mvm->nd_channels) 1229 mvm->n_nd_channels = nd_config->n_channels; 1230 1231 return 0; 1232 } 1233 1234 static void iwl_mvm_free_nd(struct iwl_mvm *mvm) 1235 { 1236 kfree(mvm->nd_match_sets); 1237 mvm->nd_match_sets = NULL; 1238 mvm->n_nd_match_sets = 0; 1239 kfree(mvm->nd_channels); 1240 mvm->nd_channels = NULL; 1241 mvm->n_nd_channels = 0; 1242 } 1243 1244 static int __iwl_mvm_suspend(struct ieee80211_hw *hw, 1245 struct cfg80211_wowlan *wowlan, 1246 bool test) 1247 { 1248 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1249 struct ieee80211_vif *vif = NULL; 1250 struct iwl_mvm_vif *mvmvif = NULL; 1251 struct ieee80211_sta *ap_sta = NULL; 1252 struct iwl_mvm_vif_link_info *mvm_link; 1253 struct iwl_d3_manager_config d3_cfg_cmd_data = { 1254 /* 1255 * Program the minimum sleep time to 10 seconds, as many 1256 * platforms have issues processing a wakeup signal while 1257 * still being in the process of suspending. 1258 */ 1259 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000), 1260 }; 1261 struct iwl_host_cmd d3_cfg_cmd = { 1262 .id = D3_CONFIG_CMD, 1263 .flags = CMD_WANT_SKB, 1264 .data[0] = &d3_cfg_cmd_data, 1265 .len[0] = sizeof(d3_cfg_cmd_data), 1266 }; 1267 int ret; 1268 int len __maybe_unused; 1269 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 1270 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1271 1272 if (!wowlan) { 1273 /* 1274 * mac80211 shouldn't get here, but for D3 test 1275 * it doesn't warrant a warning 1276 */ 1277 WARN_ON(!test); 1278 return -EINVAL; 1279 } 1280 1281 vif = iwl_mvm_get_bss_vif(mvm); 1282 if (IS_ERR_OR_NULL(vif)) 1283 return 1; 1284 1285 ret = iwl_mvm_block_esr_sync(mvm, vif, IWL_MVM_ESR_BLOCKED_WOWLAN); 1286 if (ret) 1287 return ret; 1288 1289 mutex_lock(&mvm->mutex); 1290 1291 set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 1292 1293 synchronize_net(); 1294 1295 mvmvif = iwl_mvm_vif_from_mac80211(vif); 1296 1297 mvm_link = mvmvif->link[iwl_mvm_get_primary_link(vif)]; 1298 if (WARN_ON_ONCE(!mvm_link)) { 1299 ret = -EINVAL; 1300 goto out_noreset; 1301 } 1302 1303 if (mvm_link->ap_sta_id == IWL_INVALID_STA) { 1304 /* if we're not associated, this must be netdetect */ 1305 if (!wowlan->nd_config) { 1306 ret = 1; 1307 goto out_noreset; 1308 } 1309 1310 ret = iwl_mvm_netdetect_config( 1311 mvm, wowlan, wowlan->nd_config, vif); 1312 if (ret) 1313 goto out; 1314 1315 mvm->net_detect = true; 1316 } else { 1317 struct iwl_wowlan_config_cmd_v6 wowlan_config_cmd = { 1318 .offloading_tid = 0, 1319 }; 1320 1321 wowlan_config_cmd.sta_id = mvm_link->ap_sta_id; 1322 1323 ap_sta = rcu_dereference_protected( 1324 mvm->fw_id_to_mac_id[mvm_link->ap_sta_id], 1325 lockdep_is_held(&mvm->mutex)); 1326 if (IS_ERR_OR_NULL(ap_sta)) { 1327 ret = -EINVAL; 1328 goto out_noreset; 1329 } 1330 1331 ret = iwl_mvm_sta_ensure_queue( 1332 mvm, ap_sta->txq[wowlan_config_cmd.offloading_tid]); 1333 if (ret) 1334 goto out_noreset; 1335 1336 ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd, 1337 vif, mvmvif, ap_sta); 1338 if (ret) 1339 goto out_noreset; 1340 ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd, 1341 vif, mvmvif, mvm_link, ap_sta); 1342 if (ret) 1343 goto out; 1344 1345 mvm->net_detect = false; 1346 } 1347 1348 ret = iwl_mvm_power_update_device(mvm); 1349 if (ret) 1350 goto out; 1351 1352 ret = iwl_mvm_power_update_mac(mvm); 1353 if (ret) 1354 goto out; 1355 1356 #ifdef CONFIG_IWLWIFI_DEBUGFS 1357 if (mvm->d3_wake_sysassert) 1358 d3_cfg_cmd_data.wakeup_flags |= 1359 cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR); 1360 #endif 1361 1362 /* 1363 * Prior to 9000 device family the driver needs to stop the dbg 1364 * recording before entering D3. In later devices the FW stops the 1365 * recording automatically. 1366 */ 1367 if (mvm->trans->mac_cfg->device_family < IWL_DEVICE_FAMILY_9000) 1368 iwl_fw_dbg_stop_restart_recording(&mvm->fwrt, NULL, true); 1369 1370 /* must be last -- this switches firmware state */ 1371 ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd); 1372 if (ret) 1373 goto out; 1374 #ifdef CONFIG_IWLWIFI_DEBUGFS 1375 len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt); 1376 if (len >= sizeof(u32)) { 1377 mvm->d3_test_pme_ptr = 1378 le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data); 1379 } 1380 #endif 1381 iwl_free_resp(&d3_cfg_cmd); 1382 1383 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1384 1385 ret = iwl_trans_d3_suspend(mvm->trans, test, !unified_image); 1386 out: 1387 if (ret < 0) { 1388 iwl_mvm_free_nd(mvm); 1389 1390 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 1391 } 1392 out_noreset: 1393 mutex_unlock(&mvm->mutex); 1394 1395 return ret; 1396 } 1397 1398 int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) 1399 { 1400 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1401 1402 iwl_mvm_pause_tcm(mvm, true); 1403 1404 mutex_lock(&mvm->mutex); 1405 iwl_fw_runtime_suspend(&mvm->fwrt); 1406 mutex_unlock(&mvm->mutex); 1407 1408 return __iwl_mvm_suspend(hw, wowlan, false); 1409 } 1410 1411 struct iwl_multicast_key_data { 1412 u8 key[WOWLAN_KEY_MAX_SIZE]; 1413 u8 len; 1414 u8 flags; 1415 u8 id; 1416 u8 ipn[6]; 1417 }; 1418 1419 /* converted data from the different status responses */ 1420 struct iwl_wowlan_status_data { 1421 u64 replay_ctr; 1422 u32 num_of_gtk_rekeys; 1423 u32 received_beacons; 1424 u32 wakeup_reasons; 1425 u32 wake_packet_length; 1426 u32 wake_packet_bufsize; 1427 u16 pattern_number; 1428 u16 non_qos_seq_ctr; 1429 u16 qos_seq_ctr[8]; 1430 u8 tid_tear_down; 1431 u8 tid_offloaded_tx; 1432 1433 struct { 1434 /* including RX MIC key for TKIP */ 1435 u8 key[WOWLAN_KEY_MAX_SIZE]; 1436 u8 len; 1437 u8 flags; 1438 u8 id; 1439 } gtk[WOWLAN_GTK_KEYS_NUM]; 1440 1441 struct { 1442 /* 1443 * We store both the TKIP and AES representations 1444 * coming from the firmware because we decode the 1445 * data from there before we iterate the keys and 1446 * know which one we need. 1447 */ 1448 struct { 1449 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT]; 1450 } tkip, aes; 1451 1452 /* 1453 * We use -1 for when we have valid data but don't know 1454 * the key ID from firmware, and thus it needs to be 1455 * installed with the last key (depending on rekeying). 1456 */ 1457 s8 key_id; 1458 bool valid; 1459 } gtk_seq[2]; 1460 1461 struct { 1462 /* Same as above */ 1463 struct { 1464 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT]; 1465 u64 tx_pn; 1466 } tkip, aes; 1467 } ptk; 1468 1469 struct iwl_multicast_key_data igtk; 1470 struct iwl_multicast_key_data bigtk[WOWLAN_BIGTK_KEYS_NUM]; 1471 1472 u8 *wake_packet; 1473 }; 1474 1475 static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm, 1476 struct ieee80211_vif *vif, 1477 struct iwl_wowlan_status_data *status) 1478 { 1479 struct sk_buff *pkt = NULL; 1480 struct cfg80211_wowlan_wakeup wakeup = { 1481 .pattern_idx = -1, 1482 }; 1483 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; 1484 u32 reasons = status->wakeup_reasons; 1485 1486 if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) { 1487 wakeup_report = NULL; 1488 goto report; 1489 } 1490 1491 pm_wakeup_event(mvm->dev, 0); 1492 1493 if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET) 1494 wakeup.magic_pkt = true; 1495 1496 if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN) 1497 wakeup.pattern_idx = 1498 status->pattern_number; 1499 1500 if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 1501 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH | 1502 IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)) 1503 wakeup.disconnect = true; 1504 1505 if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE) 1506 wakeup.gtk_rekey_failure = true; 1507 1508 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 1509 wakeup.rfkill_release = true; 1510 1511 if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST) 1512 wakeup.eap_identity_req = true; 1513 1514 if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE) 1515 wakeup.four_way_handshake = true; 1516 1517 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS) 1518 wakeup.tcp_connlost = true; 1519 1520 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE) 1521 wakeup.tcp_nomoretokens = true; 1522 1523 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET) 1524 wakeup.tcp_match = true; 1525 1526 if (reasons & IWL_WAKEUP_BY_11W_UNPROTECTED_DEAUTH_OR_DISASSOC) 1527 wakeup.unprot_deauth_disassoc = true; 1528 1529 if (status->wake_packet) { 1530 int pktsize = status->wake_packet_bufsize; 1531 int pktlen = status->wake_packet_length; 1532 const u8 *pktdata = status->wake_packet; 1533 const struct ieee80211_hdr *hdr = (const void *)pktdata; 1534 int truncated = pktlen - pktsize; 1535 1536 /* this would be a firmware bug */ 1537 if (WARN_ON_ONCE(truncated < 0)) 1538 truncated = 0; 1539 1540 if (ieee80211_is_data(hdr->frame_control)) { 1541 int hdrlen = ieee80211_hdrlen(hdr->frame_control); 1542 int ivlen = 0, icvlen = 4; /* also FCS */ 1543 1544 pkt = alloc_skb(pktsize, GFP_KERNEL); 1545 if (!pkt) 1546 goto report; 1547 1548 skb_put_data(pkt, pktdata, hdrlen); 1549 pktdata += hdrlen; 1550 pktsize -= hdrlen; 1551 1552 if (ieee80211_has_protected(hdr->frame_control)) { 1553 /* 1554 * This is unlocked and using gtk_i(c)vlen, 1555 * but since everything is under RTNL still 1556 * that's not really a problem - changing 1557 * it would be difficult. 1558 */ 1559 if (is_multicast_ether_addr(hdr->addr1)) { 1560 ivlen = mvm->gtk_ivlen; 1561 icvlen += mvm->gtk_icvlen; 1562 } else { 1563 ivlen = mvm->ptk_ivlen; 1564 icvlen += mvm->ptk_icvlen; 1565 } 1566 } 1567 1568 /* if truncated, FCS/ICV is (partially) gone */ 1569 if (truncated >= icvlen) { 1570 icvlen = 0; 1571 truncated -= icvlen; 1572 } else { 1573 icvlen -= truncated; 1574 truncated = 0; 1575 } 1576 1577 pktsize -= ivlen + icvlen; 1578 pktdata += ivlen; 1579 1580 skb_put_data(pkt, pktdata, pktsize); 1581 1582 if (ieee80211_data_to_8023(pkt, vif->addr, vif->type)) 1583 goto report; 1584 wakeup.packet = pkt->data; 1585 wakeup.packet_present_len = pkt->len; 1586 wakeup.packet_len = pkt->len - truncated; 1587 wakeup.packet_80211 = false; 1588 } else { 1589 int fcslen = 4; 1590 1591 if (truncated >= 4) { 1592 truncated -= 4; 1593 fcslen = 0; 1594 } else { 1595 fcslen -= truncated; 1596 truncated = 0; 1597 } 1598 pktsize -= fcslen; 1599 wakeup.packet = status->wake_packet; 1600 wakeup.packet_present_len = pktsize; 1601 wakeup.packet_len = pktlen - truncated; 1602 wakeup.packet_80211 = true; 1603 } 1604 } 1605 1606 report: 1607 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); 1608 kfree_skb(pkt); 1609 } 1610 1611 static void iwl_mvm_le64_to_aes_seq(__le64 le_pn, struct ieee80211_key_seq *seq) 1612 { 1613 u64 pn = le64_to_cpu(le_pn); 1614 1615 seq->ccmp.pn[0] = pn >> 40; 1616 seq->ccmp.pn[1] = pn >> 32; 1617 seq->ccmp.pn[2] = pn >> 24; 1618 seq->ccmp.pn[3] = pn >> 16; 1619 seq->ccmp.pn[4] = pn >> 8; 1620 seq->ccmp.pn[5] = pn; 1621 } 1622 1623 static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc, 1624 struct ieee80211_key_seq *seq) 1625 { 1626 iwl_mvm_le64_to_aes_seq(sc->pn, seq); 1627 } 1628 1629 static void iwl_mvm_le64_to_tkip_seq(__le64 le_pn, struct ieee80211_key_seq *seq) 1630 { 1631 u64 pn = le64_to_cpu(le_pn); 1632 1633 seq->tkip.iv16 = (u16)pn; 1634 seq->tkip.iv32 = (u32)(pn >> 16); 1635 } 1636 1637 static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc, 1638 struct ieee80211_key_seq *seq) 1639 { 1640 seq->tkip.iv32 = le32_to_cpu(sc->iv32); 1641 seq->tkip.iv16 = le16_to_cpu(sc->iv16); 1642 } 1643 1644 static void iwl_mvm_set_key_rx_seq_tids(struct ieee80211_key_conf *key, 1645 struct ieee80211_key_seq *seq) 1646 { 1647 int tid; 1648 1649 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) 1650 ieee80211_set_key_rx_seq(key, tid, &seq[tid]); 1651 } 1652 1653 static void iwl_mvm_set_aes_ptk_rx_seq(struct iwl_mvm *mvm, 1654 struct iwl_wowlan_status_data *status, 1655 struct ieee80211_sta *sta, 1656 struct ieee80211_key_conf *key) 1657 { 1658 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1659 struct iwl_mvm_key_pn *ptk_pn; 1660 int tid; 1661 1662 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.aes.seq); 1663 1664 if (!iwl_mvm_has_new_rx_api(mvm)) 1665 return; 1666 1667 1668 rcu_read_lock(); 1669 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]); 1670 if (WARN_ON(!ptk_pn)) { 1671 rcu_read_unlock(); 1672 return; 1673 } 1674 1675 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1676 int i; 1677 1678 for (i = 1; i < mvm->trans->info.num_rxqs; i++) 1679 memcpy(ptk_pn->q[i].pn[tid], 1680 status->ptk.aes.seq[tid].ccmp.pn, 1681 IEEE80211_CCMP_PN_LEN); 1682 } 1683 rcu_read_unlock(); 1684 } 1685 1686 static void iwl_mvm_convert_key_counters(struct iwl_wowlan_status_data *status, 1687 union iwl_all_tsc_rsc *sc, u8 key_idx) 1688 { 1689 int i; 1690 1691 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT); 1692 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC); 1693 1694 /* GTK RX counters */ 1695 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1696 iwl_mvm_tkip_sc_to_seq(&sc->tkip.multicast_rsc[i], 1697 &status->gtk_seq[0].tkip.seq[i]); 1698 iwl_mvm_aes_sc_to_seq(&sc->aes.multicast_rsc[i], 1699 &status->gtk_seq[0].aes.seq[i]); 1700 } 1701 status->gtk_seq[0].valid = true; 1702 status->gtk_seq[0].key_id = key_idx; 1703 1704 /* PTK TX counter */ 1705 status->ptk.tkip.tx_pn = (u64)le16_to_cpu(sc->tkip.tsc.iv16) | 1706 ((u64)le32_to_cpu(sc->tkip.tsc.iv32) << 16); 1707 status->ptk.aes.tx_pn = le64_to_cpu(sc->aes.tsc.pn); 1708 1709 /* PTK RX counters */ 1710 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1711 iwl_mvm_tkip_sc_to_seq(&sc->tkip.unicast_rsc[i], 1712 &status->ptk.tkip.seq[i]); 1713 iwl_mvm_aes_sc_to_seq(&sc->aes.unicast_rsc[i], 1714 &status->ptk.aes.seq[i]); 1715 } 1716 } 1717 1718 static void 1719 iwl_mvm_convert_key_counters_v5_gtk_seq(struct iwl_wowlan_status_data *status, 1720 struct iwl_wowlan_all_rsc_tsc_v5 *sc, 1721 unsigned int idx, unsigned int key_id) 1722 { 1723 int tid; 1724 1725 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1726 iwl_mvm_le64_to_tkip_seq(sc->mcast_rsc[idx][tid], 1727 &status->gtk_seq[idx].tkip.seq[tid]); 1728 iwl_mvm_le64_to_aes_seq(sc->mcast_rsc[idx][tid], 1729 &status->gtk_seq[idx].aes.seq[tid]); 1730 } 1731 1732 status->gtk_seq[idx].valid = true; 1733 status->gtk_seq[idx].key_id = key_id; 1734 } 1735 1736 static void 1737 iwl_mvm_convert_key_counters_v5(struct iwl_wowlan_status_data *status, 1738 struct iwl_wowlan_all_rsc_tsc_v5 *sc) 1739 { 1740 int i, tid; 1741 1742 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT); 1743 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC); 1744 BUILD_BUG_ON(ARRAY_SIZE(sc->mcast_rsc) != ARRAY_SIZE(status->gtk_seq)); 1745 1746 /* GTK RX counters */ 1747 for (i = 0; i < ARRAY_SIZE(sc->mcast_key_id_map); i++) { 1748 u8 entry = sc->mcast_key_id_map[i]; 1749 1750 if (entry < ARRAY_SIZE(sc->mcast_rsc)) 1751 iwl_mvm_convert_key_counters_v5_gtk_seq(status, sc, 1752 entry, i); 1753 } 1754 1755 /* PTK TX counters not needed, assigned in device */ 1756 1757 /* PTK RX counters */ 1758 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1759 iwl_mvm_le64_to_tkip_seq(sc->ucast_rsc[tid], 1760 &status->ptk.tkip.seq[tid]); 1761 iwl_mvm_le64_to_aes_seq(sc->ucast_rsc[tid], 1762 &status->ptk.aes.seq[tid]); 1763 } 1764 } 1765 1766 static void iwl_mvm_set_key_rx_seq_idx(struct ieee80211_key_conf *key, 1767 struct iwl_wowlan_status_data *status, 1768 int idx) 1769 { 1770 switch (key->cipher) { 1771 case WLAN_CIPHER_SUITE_CCMP: 1772 case WLAN_CIPHER_SUITE_GCMP: 1773 case WLAN_CIPHER_SUITE_GCMP_256: 1774 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].aes.seq); 1775 break; 1776 case WLAN_CIPHER_SUITE_TKIP: 1777 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].tkip.seq); 1778 break; 1779 default: 1780 WARN_ON(1); 1781 } 1782 } 1783 1784 static void iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf *key, 1785 struct iwl_wowlan_status_data *status) 1786 { 1787 int i; 1788 1789 for (i = 0; i < ARRAY_SIZE(status->gtk_seq); i++) { 1790 if (!status->gtk_seq[i].valid) 1791 continue; 1792 1793 if (status->gtk_seq[i].key_id == key->keyidx) 1794 iwl_mvm_set_key_rx_seq_idx(key, status, i); 1795 } 1796 } 1797 1798 struct iwl_mvm_d3_gtk_iter_data { 1799 struct iwl_mvm *mvm; 1800 struct iwl_wowlan_status_data *status; 1801 u32 gtk_cipher, igtk_cipher, bigtk_cipher; 1802 bool unhandled_cipher, igtk_support, bigtk_support; 1803 int num_keys; 1804 }; 1805 1806 static void iwl_mvm_d3_find_last_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 int link_id = vif->active_links ? __ffs(vif->active_links) : -1; 1814 1815 if (link_id >= 0 && key->link_id >= 0 && link_id != key->link_id) 1816 return; 1817 1818 if (data->unhandled_cipher) 1819 return; 1820 1821 switch (key->cipher) { 1822 case WLAN_CIPHER_SUITE_WEP40: 1823 case WLAN_CIPHER_SUITE_WEP104: 1824 /* ignore WEP completely, nothing to do */ 1825 return; 1826 case WLAN_CIPHER_SUITE_CCMP: 1827 case WLAN_CIPHER_SUITE_GCMP: 1828 case WLAN_CIPHER_SUITE_GCMP_256: 1829 case WLAN_CIPHER_SUITE_TKIP: 1830 /* we support these */ 1831 data->gtk_cipher = key->cipher; 1832 break; 1833 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 1834 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 1835 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 1836 case WLAN_CIPHER_SUITE_AES_CMAC: 1837 /* we support these */ 1838 if (data->igtk_support && 1839 (key->keyidx == 4 || key->keyidx == 5)) { 1840 data->igtk_cipher = key->cipher; 1841 } else if (data->bigtk_support && 1842 (key->keyidx == 6 || key->keyidx == 7)) { 1843 data->bigtk_cipher = key->cipher; 1844 } else { 1845 data->unhandled_cipher = true; 1846 return; 1847 } 1848 break; 1849 default: 1850 /* everything else - disconnect from AP */ 1851 data->unhandled_cipher = true; 1852 return; 1853 } 1854 1855 data->num_keys++; 1856 } 1857 1858 static void 1859 iwl_mvm_d3_set_igtk_bigtk_ipn(const struct iwl_multicast_key_data *key, 1860 struct ieee80211_key_seq *seq, u32 cipher) 1861 { 1862 switch (cipher) { 1863 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 1864 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 1865 BUILD_BUG_ON(sizeof(seq->aes_gmac.pn) != sizeof(key->ipn)); 1866 memcpy(seq->aes_gmac.pn, key->ipn, sizeof(seq->aes_gmac.pn)); 1867 break; 1868 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 1869 case WLAN_CIPHER_SUITE_AES_CMAC: 1870 BUILD_BUG_ON(sizeof(seq->aes_cmac.pn) != sizeof(key->ipn)); 1871 memcpy(seq->aes_cmac.pn, key->ipn, sizeof(seq->aes_cmac.pn)); 1872 break; 1873 default: 1874 WARN_ON(1); 1875 } 1876 } 1877 1878 static void 1879 iwl_mvm_d3_update_igtk_bigtk(struct iwl_wowlan_status_data *status, 1880 struct ieee80211_key_conf *key, 1881 struct iwl_multicast_key_data *key_data) 1882 { 1883 struct ieee80211_key_seq seq; 1884 1885 iwl_mvm_d3_set_igtk_bigtk_ipn(key_data, &seq, key->cipher); 1886 ieee80211_set_key_rx_seq(key, 0, &seq); 1887 } 1888 1889 static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw, 1890 struct ieee80211_vif *vif, 1891 struct ieee80211_sta *sta, 1892 struct ieee80211_key_conf *key, 1893 void *_data) 1894 { 1895 struct iwl_mvm_d3_gtk_iter_data *data = _data; 1896 struct iwl_wowlan_status_data *status = data->status; 1897 s8 keyidx; 1898 int link_id = vif->active_links ? __ffs(vif->active_links) : -1; 1899 1900 if (link_id >= 0 && key->link_id >= 0 && link_id != key->link_id) 1901 return; 1902 1903 if (data->unhandled_cipher) 1904 return; 1905 1906 switch (key->cipher) { 1907 case WLAN_CIPHER_SUITE_WEP40: 1908 case WLAN_CIPHER_SUITE_WEP104: 1909 /* ignore WEP completely, nothing to do */ 1910 return; 1911 case WLAN_CIPHER_SUITE_CCMP: 1912 case WLAN_CIPHER_SUITE_GCMP: 1913 case WLAN_CIPHER_SUITE_GCMP_256: 1914 if (sta) { 1915 atomic64_set(&key->tx_pn, status->ptk.aes.tx_pn); 1916 iwl_mvm_set_aes_ptk_rx_seq(data->mvm, status, sta, key); 1917 return; 1918 } 1919 fallthrough; 1920 case WLAN_CIPHER_SUITE_TKIP: 1921 if (sta) { 1922 atomic64_set(&key->tx_pn, status->ptk.tkip.tx_pn); 1923 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.tkip.seq); 1924 return; 1925 } 1926 keyidx = key->keyidx; 1927 /* 1928 * Update the seq even if there was a rekey. If there was a 1929 * rekey, we will update again after replacing the key 1930 */ 1931 if ((status->gtk[0].len && keyidx == status->gtk[0].id) || 1932 (status->gtk[1].len && keyidx == status->gtk[1].id)) 1933 iwl_mvm_set_key_rx_seq(key, status); 1934 break; 1935 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 1936 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 1937 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 1938 case WLAN_CIPHER_SUITE_AES_CMAC: 1939 if (key->keyidx == 4 || key->keyidx == 5) { 1940 iwl_mvm_d3_update_igtk_bigtk(status, key, 1941 &status->igtk); 1942 } 1943 if (key->keyidx == 6 || key->keyidx == 7) { 1944 u8 idx = key->keyidx == status->bigtk[1].id; 1945 1946 iwl_mvm_d3_update_igtk_bigtk(status, key, 1947 &status->bigtk[idx]); 1948 } 1949 } 1950 } 1951 1952 static bool iwl_mvm_gtk_rekey(struct iwl_wowlan_status_data *status, 1953 struct ieee80211_vif *vif, 1954 struct iwl_mvm *mvm, u32 gtk_cipher) 1955 { 1956 int i, j; 1957 struct ieee80211_key_conf *key; 1958 DEFINE_RAW_FLEX(struct ieee80211_key_conf, conf, key, 1959 WOWLAN_KEY_MAX_SIZE); 1960 int link_id = vif->active_links ? __ffs(vif->active_links) : -1; 1961 u8 key_data[WOWLAN_KEY_MAX_SIZE]; 1962 1963 conf->cipher = gtk_cipher; 1964 1965 BUILD_BUG_ON(WLAN_KEY_LEN_CCMP != WLAN_KEY_LEN_GCMP); 1966 BUILD_BUG_ON(WOWLAN_KEY_MAX_SIZE < WLAN_KEY_LEN_CCMP); 1967 BUILD_BUG_ON(WOWLAN_KEY_MAX_SIZE < WLAN_KEY_LEN_GCMP_256); 1968 BUILD_BUG_ON(WOWLAN_KEY_MAX_SIZE < WLAN_KEY_LEN_TKIP); 1969 BUILD_BUG_ON(WOWLAN_KEY_MAX_SIZE < sizeof(status->gtk[0].key)); 1970 1971 switch (gtk_cipher) { 1972 case WLAN_CIPHER_SUITE_CCMP: 1973 case WLAN_CIPHER_SUITE_GCMP: 1974 conf->keylen = WLAN_KEY_LEN_CCMP; 1975 break; 1976 case WLAN_CIPHER_SUITE_GCMP_256: 1977 conf->keylen = WLAN_KEY_LEN_GCMP_256; 1978 break; 1979 case WLAN_CIPHER_SUITE_TKIP: 1980 conf->keylen = WLAN_KEY_LEN_TKIP; 1981 break; 1982 default: 1983 WARN_ON(1); 1984 } 1985 1986 for (i = 0; i < ARRAY_SIZE(status->gtk); i++) { 1987 if (!status->gtk[i].len) 1988 continue; 1989 1990 conf->keyidx = status->gtk[i].id; 1991 IWL_DEBUG_WOWLAN(mvm, 1992 "Received from FW GTK cipher %d, key index %d\n", 1993 conf->cipher, conf->keyidx); 1994 memcpy(conf->key, status->gtk[i].key, 1995 sizeof(status->gtk[i].key)); 1996 memcpy(key_data, status->gtk[i].key, sizeof(status->gtk[i].key)); 1997 1998 key = ieee80211_gtk_rekey_add(vif, status->gtk[i].id, key_data, 1999 sizeof(key_data), link_id); 2000 if (IS_ERR(key)) { 2001 /* FW may send also the old keys */ 2002 if (PTR_ERR(key) == -EALREADY) 2003 continue; 2004 return false; 2005 } 2006 2007 for (j = 0; j < ARRAY_SIZE(status->gtk_seq); j++) { 2008 if (!status->gtk_seq[j].valid || 2009 status->gtk_seq[j].key_id != key->keyidx) 2010 continue; 2011 iwl_mvm_set_key_rx_seq_idx(key, status, j); 2012 break; 2013 } 2014 WARN_ON(j == ARRAY_SIZE(status->gtk_seq)); 2015 } 2016 2017 return true; 2018 } 2019 2020 static bool 2021 iwl_mvm_d3_igtk_bigtk_rekey_add(struct iwl_wowlan_status_data *status, 2022 struct ieee80211_vif *vif, u32 cipher, 2023 struct iwl_multicast_key_data *key_data) 2024 { 2025 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2026 DEFINE_RAW_FLEX(struct ieee80211_key_conf, conf, key, 2027 WOWLAN_KEY_MAX_SIZE); 2028 struct ieee80211_key_conf *key_config; 2029 struct ieee80211_key_seq seq; 2030 int link_id = vif->active_links ? __ffs(vif->active_links) : -1; 2031 u8 key[WOWLAN_KEY_MAX_SIZE]; 2032 s8 keyidx = key_data->id; 2033 2034 conf->cipher = cipher; 2035 conf->keyidx = keyidx; 2036 2037 if (!key_data->len) 2038 return true; 2039 2040 iwl_mvm_d3_set_igtk_bigtk_ipn(key_data, &seq, conf->cipher); 2041 2042 switch (cipher) { 2043 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 2044 conf->keylen = WLAN_KEY_LEN_BIP_GMAC_128; 2045 break; 2046 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 2047 conf->keylen = WLAN_KEY_LEN_BIP_GMAC_256; 2048 break; 2049 case WLAN_CIPHER_SUITE_AES_CMAC: 2050 conf->keylen = WLAN_KEY_LEN_AES_CMAC; 2051 break; 2052 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 2053 conf->keylen = WLAN_KEY_LEN_BIP_CMAC_256; 2054 break; 2055 default: 2056 WARN_ON(1); 2057 } 2058 BUILD_BUG_ON(WOWLAN_KEY_MAX_SIZE < sizeof(key_data->key)); 2059 memcpy(conf->key, key_data->key, conf->keylen); 2060 2061 memcpy(key, key_data->key, sizeof(key_data->key)); 2062 2063 key_config = ieee80211_gtk_rekey_add(vif, keyidx, key, sizeof(key), 2064 link_id); 2065 if (IS_ERR(key_config)) { 2066 /* FW may send also the old keys */ 2067 return PTR_ERR(key_config) == -EALREADY; 2068 } 2069 ieee80211_set_key_rx_seq(key_config, 0, &seq); 2070 2071 if (keyidx == 4 || keyidx == 5) { 2072 struct iwl_mvm_vif_link_info *mvm_link; 2073 2074 link_id = link_id < 0 ? 0 : link_id; 2075 mvm_link = mvmvif->link[link_id]; 2076 if (mvm_link->igtk) 2077 mvm_link->igtk->hw_key_idx = STA_KEY_IDX_INVALID; 2078 mvm_link->igtk = key_config; 2079 } 2080 2081 if (vif->type == NL80211_IFTYPE_STATION && (keyidx == 6 || keyidx == 7)) 2082 rcu_assign_pointer(mvmvif->bcn_prot.keys[keyidx - 6], 2083 key_config); 2084 2085 return true; 2086 } 2087 2088 static int iwl_mvm_lookup_wowlan_status_ver(struct iwl_mvm *mvm) 2089 { 2090 u8 notif_ver; 2091 2092 if (!fw_has_api(&mvm->fw->ucode_capa, 2093 IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL)) 2094 return 6; 2095 2096 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */ 2097 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP, 2098 WOWLAN_GET_STATUSES, 0); 2099 if (!notif_ver) 2100 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, 2101 WOWLAN_GET_STATUSES, 7); 2102 2103 return notif_ver; 2104 } 2105 2106 static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm, 2107 struct ieee80211_vif *vif, 2108 struct iwl_wowlan_status_data *status) 2109 { 2110 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2111 struct iwl_mvm_d3_gtk_iter_data gtkdata = { 2112 .mvm = mvm, 2113 .status = status, 2114 }; 2115 int i; 2116 u32 disconnection_reasons = 2117 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 2118 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH; 2119 2120 if (!status || !vif->bss_conf.bssid) 2121 return false; 2122 2123 if (iwl_mvm_lookup_wowlan_status_ver(mvm) > 6 || 2124 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2125 WOWLAN_INFO_NOTIFICATION, 2126 0)) 2127 gtkdata.igtk_support = true; 2128 2129 if (iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2130 WOWLAN_INFO_NOTIFICATION, 2131 0) >= 3) 2132 gtkdata.bigtk_support = true; 2133 2134 /* find last GTK that we used initially, if any */ 2135 ieee80211_iter_keys(mvm->hw, vif, 2136 iwl_mvm_d3_find_last_keys, >kdata); 2137 /* not trying to keep connections with MFP/unhandled ciphers */ 2138 if (gtkdata.unhandled_cipher) 2139 return false; 2140 if (!gtkdata.num_keys) 2141 goto out; 2142 2143 /* 2144 * invalidate all other GTKs that might still exist and update 2145 * the one that we used 2146 */ 2147 ieee80211_iter_keys(mvm->hw, vif, 2148 iwl_mvm_d3_update_keys, >kdata); 2149 2150 if (status->num_of_gtk_rekeys) { 2151 __be64 replay_ctr = cpu_to_be64(status->replay_ctr); 2152 2153 IWL_DEBUG_WOWLAN(mvm, "num of GTK rekeying %d\n", 2154 status->num_of_gtk_rekeys); 2155 2156 if (!iwl_mvm_gtk_rekey(status, vif, mvm, gtkdata.gtk_cipher)) 2157 return false; 2158 2159 if (!iwl_mvm_d3_igtk_bigtk_rekey_add(status, vif, 2160 gtkdata.igtk_cipher, 2161 &status->igtk)) 2162 return false; 2163 2164 for (i = 0; i < ARRAY_SIZE(status->bigtk); i++) { 2165 if (!iwl_mvm_d3_igtk_bigtk_rekey_add(status, vif, 2166 gtkdata.bigtk_cipher, 2167 &status->bigtk[i])) 2168 return false; 2169 } 2170 2171 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid, 2172 (void *)&replay_ctr, GFP_KERNEL); 2173 } 2174 2175 out: 2176 if (iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP, 2177 WOWLAN_GET_STATUSES, 2178 IWL_FW_CMD_VER_UNKNOWN) < 10) { 2179 mvmvif->seqno_valid = true; 2180 /* +0x10 because the set API expects next-to-use, not last-used */ 2181 mvmvif->seqno = status->non_qos_seq_ctr + 0x10; 2182 } 2183 2184 if (status->wakeup_reasons & disconnection_reasons) 2185 return false; 2186 2187 return true; 2188 } 2189 2190 static void iwl_mvm_convert_gtk_v2(struct iwl_wowlan_status_data *status, 2191 struct iwl_wowlan_gtk_status_v2 *data) 2192 { 2193 BUILD_BUG_ON(sizeof(status->gtk[0].key) < sizeof(data->key)); 2194 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY + 2195 sizeof(data->tkip_mic_key) > 2196 sizeof(status->gtk[0].key)); 2197 2198 status->gtk[0].len = data->key_len; 2199 status->gtk[0].flags = data->key_flags; 2200 status->gtk[0].id = status->gtk[0].flags & IWL_WOWLAN_GTK_IDX_MASK; 2201 2202 memcpy(status->gtk[0].key, data->key, sizeof(data->key)); 2203 2204 /* if it's as long as the TKIP encryption key, copy MIC key */ 2205 if (status->gtk[0].len == NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY) 2206 memcpy(status->gtk[0].key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 2207 data->tkip_mic_key, sizeof(data->tkip_mic_key)); 2208 } 2209 2210 static void iwl_mvm_convert_gtk_v3(struct iwl_wowlan_status_data *status, 2211 struct iwl_wowlan_gtk_status_v3 *data) 2212 { 2213 int data_idx, status_idx = 0; 2214 2215 BUILD_BUG_ON(sizeof(status->gtk[0].key) < sizeof(data[0].key)); 2216 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY + 2217 sizeof(data[0].tkip_mic_key) > 2218 sizeof(status->gtk[0].key)); 2219 BUILD_BUG_ON(ARRAY_SIZE(status->gtk) < WOWLAN_GTK_KEYS_NUM); 2220 for (data_idx = 0; data_idx < ARRAY_SIZE(status->gtk); data_idx++) { 2221 if (!(data[data_idx].key_len)) 2222 continue; 2223 status->gtk[status_idx].len = data[data_idx].key_len; 2224 status->gtk[status_idx].flags = data[data_idx].key_flags; 2225 status->gtk[status_idx].id = status->gtk[status_idx].flags & 2226 IWL_WOWLAN_GTK_IDX_MASK; 2227 2228 memcpy(status->gtk[status_idx].key, data[data_idx].key, 2229 sizeof(data[data_idx].key)); 2230 2231 /* if it's as long as the TKIP encryption key, copy MIC key */ 2232 if (status->gtk[status_idx].len == 2233 NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY) 2234 memcpy(status->gtk[status_idx].key + 2235 NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 2236 data[data_idx].tkip_mic_key, 2237 sizeof(data[data_idx].tkip_mic_key)); 2238 status_idx++; 2239 } 2240 } 2241 2242 static void iwl_mvm_convert_igtk(struct iwl_wowlan_status_data *status, 2243 struct iwl_wowlan_igtk_status *data) 2244 { 2245 int i; 2246 2247 BUILD_BUG_ON(sizeof(status->igtk.key) < sizeof(data->key)); 2248 BUILD_BUG_ON(sizeof(status->igtk.ipn) != sizeof(data->ipn)); 2249 2250 if (!data->key_len) 2251 return; 2252 2253 status->igtk.len = data->key_len; 2254 status->igtk.flags = data->key_flags; 2255 status->igtk.id = u32_get_bits(data->key_flags, 2256 IWL_WOWLAN_IGTK_BIGTK_IDX_MASK) 2257 + WOWLAN_IGTK_MIN_INDEX; 2258 2259 memcpy(status->igtk.key, data->key, sizeof(data->key)); 2260 2261 /* mac80211 expects big endian for memcmp() to work, convert */ 2262 for (i = 0; i < sizeof(data->ipn); i++) 2263 status->igtk.ipn[i] = data->ipn[sizeof(data->ipn) - i - 1]; 2264 } 2265 2266 static void iwl_mvm_convert_bigtk(struct iwl_wowlan_status_data *status, 2267 const struct iwl_wowlan_igtk_status *data) 2268 { 2269 int data_idx, status_idx = 0; 2270 2271 BUILD_BUG_ON(ARRAY_SIZE(status->bigtk) < WOWLAN_BIGTK_KEYS_NUM); 2272 2273 for (data_idx = 0; data_idx < WOWLAN_BIGTK_KEYS_NUM; data_idx++) { 2274 if (!data[data_idx].key_len) 2275 continue; 2276 2277 status->bigtk[status_idx].len = data[data_idx].key_len; 2278 status->bigtk[status_idx].flags = data[data_idx].key_flags; 2279 status->bigtk[status_idx].id = 2280 u32_get_bits(data[data_idx].key_flags, 2281 IWL_WOWLAN_IGTK_BIGTK_IDX_MASK) 2282 + WOWLAN_BIGTK_MIN_INDEX; 2283 2284 BUILD_BUG_ON(sizeof(status->bigtk[status_idx].key) < 2285 sizeof(data[data_idx].key)); 2286 BUILD_BUG_ON(sizeof(status->bigtk[status_idx].ipn) < 2287 sizeof(data[data_idx].ipn)); 2288 2289 memcpy(status->bigtk[status_idx].key, data[data_idx].key, 2290 sizeof(data[data_idx].key)); 2291 memcpy(status->bigtk[status_idx].ipn, data[data_idx].ipn, 2292 sizeof(data[data_idx].ipn)); 2293 status_idx++; 2294 } 2295 } 2296 2297 static void iwl_mvm_parse_wowlan_info_notif(struct iwl_mvm *mvm, 2298 struct iwl_wowlan_info_notif *data, 2299 struct iwl_wowlan_status_data *status, 2300 u32 len) 2301 { 2302 if (IWL_FW_CHECK(mvm, data->num_mlo_link_keys, 2303 "MLO is not supported, shouldn't receive MLO keys\n")) 2304 return; 2305 2306 if (len < sizeof(*data)) { 2307 IWL_ERR(mvm, "Invalid WoWLAN info notification!\n"); 2308 status = NULL; 2309 return; 2310 } 2311 2312 if (mvm->fast_resume) 2313 return; 2314 2315 iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc); 2316 iwl_mvm_convert_gtk_v3(status, data->gtk); 2317 iwl_mvm_convert_igtk(status, &data->igtk[0]); 2318 iwl_mvm_convert_bigtk(status, data->bigtk); 2319 status->replay_ctr = le64_to_cpu(data->replay_ctr); 2320 status->pattern_number = le16_to_cpu(data->pattern_number); 2321 status->tid_offloaded_tx = data->tid_offloaded_tx; 2322 if (IWL_FW_CHECK(mvm, 2323 data->tid_offloaded_tx >= 2324 ARRAY_SIZE(status->qos_seq_ctr), 2325 "tid_offloaded_tx is out of bound %d\n", 2326 data->tid_offloaded_tx)) 2327 data->tid_offloaded_tx = 0; 2328 status->qos_seq_ctr[data->tid_offloaded_tx] = 2329 le16_to_cpu(data->qos_seq_ctr); 2330 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); 2331 status->num_of_gtk_rekeys = 2332 le32_to_cpu(data->num_of_gtk_rekeys); 2333 status->received_beacons = le32_to_cpu(data->received_beacons); 2334 status->tid_tear_down = data->tid_tear_down; 2335 } 2336 2337 static void 2338 iwl_mvm_parse_wowlan_info_notif_v3(struct iwl_mvm *mvm, 2339 struct iwl_wowlan_info_notif_v3 *data, 2340 struct iwl_wowlan_status_data *status, 2341 u32 len) 2342 { 2343 u32 i; 2344 2345 if (len < sizeof(*data)) { 2346 IWL_ERR(mvm, "Invalid WoWLAN info notification!\n"); 2347 status = NULL; 2348 return; 2349 } 2350 2351 if (mvm->fast_resume) 2352 return; 2353 2354 iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc); 2355 iwl_mvm_convert_gtk_v3(status, data->gtk); 2356 iwl_mvm_convert_igtk(status, &data->igtk[0]); 2357 iwl_mvm_convert_bigtk(status, data->bigtk); 2358 status->replay_ctr = le64_to_cpu(data->replay_ctr); 2359 status->pattern_number = le16_to_cpu(data->pattern_number); 2360 for (i = 0; i < IWL_MAX_TID_COUNT; i++) 2361 status->qos_seq_ctr[i] = 2362 le16_to_cpu(data->qos_seq_ctr[i]); 2363 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); 2364 status->num_of_gtk_rekeys = 2365 le32_to_cpu(data->num_of_gtk_rekeys); 2366 status->received_beacons = le32_to_cpu(data->received_beacons); 2367 status->tid_tear_down = data->tid_tear_down; 2368 } 2369 2370 static void 2371 iwl_mvm_parse_wowlan_info_notif_v1(struct iwl_mvm *mvm, 2372 struct iwl_wowlan_info_notif_v1 *data, 2373 struct iwl_wowlan_status_data *status, 2374 u32 len) 2375 { 2376 u32 i; 2377 2378 if (len < sizeof(*data)) { 2379 IWL_ERR(mvm, "Invalid WoWLAN info notification!\n"); 2380 status = NULL; 2381 return; 2382 } 2383 2384 iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc); 2385 iwl_mvm_convert_gtk_v3(status, data->gtk); 2386 iwl_mvm_convert_igtk(status, &data->igtk[0]); 2387 status->replay_ctr = le64_to_cpu(data->replay_ctr); 2388 status->pattern_number = le16_to_cpu(data->pattern_number); 2389 for (i = 0; i < IWL_MAX_TID_COUNT; i++) 2390 status->qos_seq_ctr[i] = 2391 le16_to_cpu(data->qos_seq_ctr[i]); 2392 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); 2393 status->num_of_gtk_rekeys = 2394 le32_to_cpu(data->num_of_gtk_rekeys); 2395 status->received_beacons = le32_to_cpu(data->received_beacons); 2396 status->tid_tear_down = data->tid_tear_down; 2397 } 2398 2399 /* Occasionally, templates would be nice. This is one of those times ... */ 2400 #define iwl_mvm_parse_wowlan_status_common(_ver) \ 2401 static struct iwl_wowlan_status_data * \ 2402 iwl_mvm_parse_wowlan_status_common_ ## _ver(struct iwl_mvm *mvm, \ 2403 struct iwl_wowlan_status_ ##_ver *data,\ 2404 int len) \ 2405 { \ 2406 struct iwl_wowlan_status_data *status; \ 2407 int data_size, i; \ 2408 \ 2409 if (len < sizeof(*data)) { \ 2410 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \ 2411 return NULL; \ 2412 } \ 2413 \ 2414 data_size = ALIGN(le32_to_cpu(data->wake_packet_bufsize), 4); \ 2415 if (len != sizeof(*data) + data_size) { \ 2416 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \ 2417 return NULL; \ 2418 } \ 2419 \ 2420 status = kzalloc(sizeof(*status), GFP_KERNEL); \ 2421 if (!status) \ 2422 return NULL; \ 2423 \ 2424 /* copy all the common fields */ \ 2425 status->replay_ctr = le64_to_cpu(data->replay_ctr); \ 2426 status->pattern_number = le16_to_cpu(data->pattern_number); \ 2427 status->non_qos_seq_ctr = le16_to_cpu(data->non_qos_seq_ctr); \ 2428 for (i = 0; i < 8; i++) \ 2429 status->qos_seq_ctr[i] = \ 2430 le16_to_cpu(data->qos_seq_ctr[i]); \ 2431 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); \ 2432 status->num_of_gtk_rekeys = \ 2433 le32_to_cpu(data->num_of_gtk_rekeys); \ 2434 status->received_beacons = le32_to_cpu(data->received_beacons); \ 2435 status->wake_packet_length = \ 2436 le32_to_cpu(data->wake_packet_length); \ 2437 status->wake_packet_bufsize = \ 2438 le32_to_cpu(data->wake_packet_bufsize); \ 2439 if (status->wake_packet_bufsize) { \ 2440 status->wake_packet = \ 2441 kmemdup(data->wake_packet, \ 2442 status->wake_packet_bufsize, \ 2443 GFP_KERNEL); \ 2444 if (!status->wake_packet) { \ 2445 kfree(status); \ 2446 return NULL; \ 2447 } \ 2448 } else { \ 2449 status->wake_packet = NULL; \ 2450 } \ 2451 \ 2452 return status; \ 2453 } 2454 2455 iwl_mvm_parse_wowlan_status_common(v6) 2456 iwl_mvm_parse_wowlan_status_common(v7) 2457 2458 static struct iwl_wowlan_status_data * 2459 iwl_mvm_send_wowlan_get_status(struct iwl_mvm *mvm, u8 sta_id) 2460 { 2461 struct iwl_wowlan_status_data *status; 2462 struct iwl_wowlan_get_status_cmd get_status_cmd = { 2463 .sta_id = cpu_to_le32(sta_id), 2464 }; 2465 struct iwl_host_cmd cmd = { 2466 .id = WOWLAN_GET_STATUSES, 2467 .flags = CMD_WANT_SKB, 2468 .data = { &get_status_cmd, }, 2469 .len = { sizeof(get_status_cmd), }, 2470 }; 2471 int ret, len; 2472 u8 notif_ver; 2473 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id, 2474 IWL_FW_CMD_VER_UNKNOWN); 2475 2476 if (cmd_ver == IWL_FW_CMD_VER_UNKNOWN) 2477 cmd.len[0] = 0; 2478 2479 lockdep_assert_held(&mvm->mutex); 2480 2481 ret = iwl_mvm_send_cmd(mvm, &cmd); 2482 if (ret) { 2483 IWL_ERR(mvm, "failed to query wakeup status (%d)\n", ret); 2484 return ERR_PTR(ret); 2485 } 2486 2487 len = iwl_rx_packet_payload_len(cmd.resp_pkt); 2488 2489 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */ 2490 notif_ver = iwl_mvm_lookup_wowlan_status_ver(mvm); 2491 2492 if (notif_ver < 7) { 2493 struct iwl_wowlan_status_v6 *v6 = (void *)cmd.resp_pkt->data; 2494 2495 status = iwl_mvm_parse_wowlan_status_common_v6(mvm, v6, len); 2496 if (!status) 2497 goto out_free_resp; 2498 2499 BUILD_BUG_ON(sizeof(v6->gtk.decrypt_key) > 2500 sizeof(status->gtk[0].key)); 2501 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY + 2502 sizeof(v6->gtk.tkip_mic_key) > 2503 sizeof(status->gtk[0].key)); 2504 2505 /* copy GTK info to the right place */ 2506 memcpy(status->gtk[0].key, v6->gtk.decrypt_key, 2507 sizeof(v6->gtk.decrypt_key)); 2508 memcpy(status->gtk[0].key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 2509 v6->gtk.tkip_mic_key, 2510 sizeof(v6->gtk.tkip_mic_key)); 2511 2512 iwl_mvm_convert_key_counters(status, &v6->gtk.rsc.all_tsc_rsc, 2513 v6->gtk.key_index); 2514 2515 /* hardcode the key length to 16 since v6 only supports 16 */ 2516 status->gtk[0].len = 16; 2517 2518 /* 2519 * The key index only uses 2 bits (values 0 to 3) and 2520 * we always set bit 7 which means this is the 2521 * currently used key. 2522 */ 2523 status->gtk[0].flags = v6->gtk.key_index | BIT(7); 2524 status->gtk[0].id = v6->gtk.key_index; 2525 } else if (notif_ver == 7) { 2526 struct iwl_wowlan_status_v7 *v7 = (void *)cmd.resp_pkt->data; 2527 2528 status = iwl_mvm_parse_wowlan_status_common_v7(mvm, v7, len); 2529 if (!status) 2530 goto out_free_resp; 2531 2532 iwl_mvm_convert_key_counters(status, &v7->gtk[0].rsc.all_tsc_rsc, 2533 v7->gtk[0].key_flags & IWL_WOWLAN_GTK_IDX_MASK); 2534 iwl_mvm_convert_gtk_v2(status, &v7->gtk[0]); 2535 iwl_mvm_convert_igtk(status, &v7->igtk[0]); 2536 } else { 2537 IWL_ERR(mvm, 2538 "Firmware advertises unknown WoWLAN status response %d!\n", 2539 notif_ver); 2540 status = NULL; 2541 } 2542 2543 out_free_resp: 2544 iwl_free_resp(&cmd); 2545 return status; 2546 } 2547 2548 /* releases the MVM mutex */ 2549 static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm, 2550 struct ieee80211_vif *vif, 2551 struct iwl_wowlan_status_data *status) 2552 { 2553 int i; 2554 bool keep = false; 2555 struct iwl_mvm_sta *mvm_ap_sta; 2556 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2557 int link_id = vif->active_links ? __ffs(vif->active_links) : 0; 2558 struct iwl_mvm_vif_link_info *mvm_link = mvmvif->link[link_id]; 2559 int wowlan_info_ver = iwl_fw_lookup_notif_ver(mvm->fw, 2560 PROT_OFFLOAD_GROUP, 2561 WOWLAN_INFO_NOTIFICATION, 2562 IWL_FW_CMD_VER_UNKNOWN); 2563 2564 if (WARN_ON(!mvm_link)) 2565 goto out_unlock; 2566 2567 if (!status) 2568 goto out_unlock; 2569 2570 IWL_DEBUG_WOWLAN(mvm, "wakeup reason 0x%x\n", 2571 status->wakeup_reasons); 2572 2573 mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, mvm_link->ap_sta_id); 2574 if (!mvm_ap_sta) 2575 goto out_unlock; 2576 2577 /* firmware stores last-used value, we store next value */ 2578 if (wowlan_info_ver >= 5) { 2579 mvm_ap_sta->tid_data[status->tid_offloaded_tx].seq_number = 2580 status->qos_seq_ctr[status->tid_offloaded_tx] + 0x10; 2581 } else { 2582 for (i = 0; i < IWL_MAX_TID_COUNT; i++) 2583 mvm_ap_sta->tid_data[i].seq_number = 2584 status->qos_seq_ctr[i] + 0x10; 2585 } 2586 2587 if (mvm->trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_22000) { 2588 i = mvm->offload_tid; 2589 iwl_trans_set_q_ptrs(mvm->trans, 2590 mvm_ap_sta->tid_data[i].txq_id, 2591 mvm_ap_sta->tid_data[i].seq_number >> 4); 2592 } 2593 2594 iwl_mvm_report_wakeup_reasons(mvm, vif, status); 2595 2596 keep = iwl_mvm_setup_connection_keep(mvm, vif, status); 2597 out_unlock: 2598 mutex_unlock(&mvm->mutex); 2599 return keep; 2600 } 2601 2602 #define ND_QUERY_BUF_LEN (sizeof(struct iwl_scan_offload_profile_match) * \ 2603 IWL_SCAN_MAX_PROFILES) 2604 2605 struct iwl_mvm_nd_results { 2606 u32 matched_profiles; 2607 u8 matches[ND_QUERY_BUF_LEN]; 2608 }; 2609 2610 static int 2611 iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm, 2612 struct iwl_mvm_nd_results *results) 2613 { 2614 struct iwl_scan_offload_match_info *query; 2615 struct iwl_host_cmd cmd = { 2616 .id = SCAN_OFFLOAD_PROFILES_QUERY_CMD, 2617 .flags = CMD_WANT_SKB, 2618 }; 2619 int ret, len; 2620 size_t query_len, matches_len; 2621 int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw); 2622 2623 ret = iwl_mvm_send_cmd(mvm, &cmd); 2624 if (ret) { 2625 IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret); 2626 return ret; 2627 } 2628 2629 if (fw_has_api(&mvm->fw->ucode_capa, 2630 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2631 query_len = sizeof(struct iwl_scan_offload_match_info); 2632 matches_len = sizeof(struct iwl_scan_offload_profile_match) * 2633 max_profiles; 2634 } else { 2635 query_len = sizeof(struct iwl_scan_offload_profiles_query_v1); 2636 matches_len = sizeof(struct iwl_scan_offload_profile_match_v1) * 2637 max_profiles; 2638 } 2639 2640 len = iwl_rx_packet_payload_len(cmd.resp_pkt); 2641 if (len < query_len) { 2642 IWL_ERR(mvm, "Invalid scan offload profiles query response!\n"); 2643 ret = -EIO; 2644 goto out_free_resp; 2645 } 2646 2647 query = (void *)cmd.resp_pkt->data; 2648 2649 results->matched_profiles = le32_to_cpu(query->matched_profiles); 2650 memcpy(results->matches, query->matches, matches_len); 2651 2652 #ifdef CONFIG_IWLWIFI_DEBUGFS 2653 mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done); 2654 #endif 2655 2656 out_free_resp: 2657 iwl_free_resp(&cmd); 2658 return ret; 2659 } 2660 2661 static int iwl_mvm_query_num_match_chans(struct iwl_mvm *mvm, 2662 struct iwl_mvm_nd_results *results, 2663 int idx) 2664 { 2665 int n_chans = 0, i; 2666 2667 if (fw_has_api(&mvm->fw->ucode_capa, 2668 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2669 struct iwl_scan_offload_profile_match *matches = 2670 (void *)results->matches; 2671 2672 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; i++) 2673 n_chans += hweight8(matches[idx].matching_channels[i]); 2674 } else { 2675 struct iwl_scan_offload_profile_match_v1 *matches = 2676 (void *)results->matches; 2677 2678 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1; i++) 2679 n_chans += hweight8(matches[idx].matching_channels[i]); 2680 } 2681 2682 return n_chans; 2683 } 2684 2685 static void iwl_mvm_query_set_freqs(struct iwl_mvm *mvm, 2686 struct iwl_mvm_nd_results *results, 2687 struct cfg80211_wowlan_nd_match *match, 2688 int idx) 2689 { 2690 int i; 2691 int n_channels = 0; 2692 2693 if (fw_has_api(&mvm->fw->ucode_capa, 2694 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2695 struct iwl_scan_offload_profile_match *matches = 2696 (void *)results->matches; 2697 2698 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; i++) 2699 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8))) 2700 match->channels[n_channels++] = 2701 mvm->nd_channels[i]->center_freq; 2702 } else { 2703 struct iwl_scan_offload_profile_match_v1 *matches = 2704 (void *)results->matches; 2705 2706 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1 * 8; i++) 2707 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8))) 2708 match->channels[n_channels++] = 2709 mvm->nd_channels[i]->center_freq; 2710 } 2711 /* We may have ended up with fewer channels than we allocated. */ 2712 match->n_channels = n_channels; 2713 } 2714 2715 /** 2716 * enum iwl_d3_notif - d3 notifications 2717 * @IWL_D3_NOTIF_WOWLAN_INFO: WOWLAN_INFO_NOTIF was received 2718 * @IWL_D3_NOTIF_WOWLAN_WAKE_PKT: WOWLAN_WAKE_PKT_NOTIF was received 2719 * @IWL_D3_NOTIF_PROT_OFFLOAD: PROT_OFFLOAD_NOTIF was received 2720 * @IWL_D3_ND_MATCH_INFO: OFFLOAD_MATCH_INFO_NOTIF was received 2721 * @IWL_D3_NOTIF_D3_END_NOTIF: D3_END_NOTIF was received 2722 */ 2723 enum iwl_d3_notif { 2724 IWL_D3_NOTIF_WOWLAN_INFO = BIT(0), 2725 IWL_D3_NOTIF_WOWLAN_WAKE_PKT = BIT(1), 2726 IWL_D3_NOTIF_PROT_OFFLOAD = BIT(2), 2727 IWL_D3_ND_MATCH_INFO = BIT(3), 2728 IWL_D3_NOTIF_D3_END_NOTIF = BIT(4) 2729 }; 2730 2731 /* manage d3 resume data */ 2732 struct iwl_d3_data { 2733 struct iwl_wowlan_status_data *status; 2734 bool test; 2735 u32 d3_end_flags; 2736 u32 notif_expected; /* bitmap - see &enum iwl_d3_notif */ 2737 u32 notif_received; /* bitmap - see &enum iwl_d3_notif */ 2738 struct iwl_mvm_nd_results *nd_results; 2739 bool nd_results_valid; 2740 }; 2741 2742 static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm, 2743 struct ieee80211_vif *vif, 2744 struct iwl_d3_data *d3_data) 2745 { 2746 struct cfg80211_wowlan_nd_info *net_detect = NULL; 2747 struct cfg80211_wowlan_wakeup wakeup = { 2748 .pattern_idx = -1, 2749 }; 2750 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; 2751 unsigned long matched_profiles; 2752 u32 reasons = 0; 2753 int i, n_matches, ret; 2754 2755 if (WARN_ON(!d3_data || !d3_data->status)) 2756 goto out; 2757 2758 reasons = d3_data->status->wakeup_reasons; 2759 2760 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 2761 wakeup.rfkill_release = true; 2762 2763 if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) 2764 goto out; 2765 2766 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2767 WOWLAN_INFO_NOTIFICATION, 0)) { 2768 IWL_INFO(mvm, "Query FW for ND results\n"); 2769 ret = iwl_mvm_netdetect_query_results(mvm, d3_data->nd_results); 2770 2771 } else { 2772 IWL_INFO(mvm, "Notification based ND results\n"); 2773 ret = d3_data->nd_results_valid ? 0 : -1; 2774 } 2775 2776 if (ret || !d3_data->nd_results->matched_profiles) { 2777 wakeup_report = NULL; 2778 goto out; 2779 } 2780 2781 matched_profiles = d3_data->nd_results->matched_profiles; 2782 if (mvm->n_nd_match_sets) { 2783 n_matches = hweight_long(matched_profiles); 2784 } else { 2785 IWL_ERR(mvm, "no net detect match information available\n"); 2786 n_matches = 0; 2787 } 2788 2789 net_detect = kzalloc(struct_size(net_detect, matches, n_matches), 2790 GFP_KERNEL); 2791 if (!net_detect || !n_matches) 2792 goto out_report_nd; 2793 net_detect->n_matches = n_matches; 2794 n_matches = 0; 2795 2796 for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) { 2797 struct cfg80211_wowlan_nd_match *match; 2798 int idx, n_channels = 0; 2799 2800 n_channels = iwl_mvm_query_num_match_chans(mvm, 2801 d3_data->nd_results, 2802 i); 2803 2804 match = kzalloc(struct_size(match, channels, n_channels), 2805 GFP_KERNEL); 2806 if (!match) 2807 goto out_report_nd; 2808 match->n_channels = n_channels; 2809 2810 net_detect->matches[n_matches++] = match; 2811 2812 /* We inverted the order of the SSIDs in the scan 2813 * request, so invert the index here. 2814 */ 2815 idx = mvm->n_nd_match_sets - i - 1; 2816 match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len; 2817 memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid, 2818 match->ssid.ssid_len); 2819 2820 if (mvm->n_nd_channels < n_channels) 2821 continue; 2822 2823 iwl_mvm_query_set_freqs(mvm, d3_data->nd_results, match, i); 2824 } 2825 /* We may have fewer matches than we allocated. */ 2826 net_detect->n_matches = n_matches; 2827 2828 out_report_nd: 2829 wakeup.net_detect = net_detect; 2830 out: 2831 iwl_mvm_free_nd(mvm); 2832 2833 mutex_unlock(&mvm->mutex); 2834 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); 2835 2836 if (net_detect) { 2837 for (i = 0; i < net_detect->n_matches; i++) 2838 kfree(net_detect->matches[i]); 2839 kfree(net_detect); 2840 } 2841 } 2842 2843 static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac, 2844 struct ieee80211_vif *vif) 2845 { 2846 /* skip the one we keep connection on */ 2847 if (data == vif) 2848 return; 2849 2850 if (vif->type == NL80211_IFTYPE_STATION) 2851 ieee80211_resume_disconnect(vif); 2852 } 2853 2854 enum rt_status { 2855 FW_ALIVE, 2856 FW_NEEDS_RESET, 2857 FW_ERROR, 2858 }; 2859 2860 static enum rt_status iwl_mvm_check_rt_status(struct iwl_mvm *mvm, 2861 struct ieee80211_vif *vif) 2862 { 2863 u32 err_id; 2864 2865 /* check for lmac1 error */ 2866 if (iwl_fwrt_read_err_table(mvm->trans, 2867 mvm->trans->dbg.lmac_error_event_table[0], 2868 &err_id)) { 2869 if (err_id == RF_KILL_INDICATOR_FOR_WOWLAN) { 2870 IWL_WARN(mvm, "Rfkill was toggled during suspend\n"); 2871 if (vif) { 2872 struct cfg80211_wowlan_wakeup wakeup = { 2873 .rfkill_release = true, 2874 }; 2875 2876 ieee80211_report_wowlan_wakeup(vif, &wakeup, 2877 GFP_KERNEL); 2878 } 2879 2880 return FW_NEEDS_RESET; 2881 } 2882 return FW_ERROR; 2883 } 2884 2885 /* check if we have lmac2 set and check for error */ 2886 if (iwl_fwrt_read_err_table(mvm->trans, 2887 mvm->trans->dbg.lmac_error_event_table[1], 2888 NULL)) 2889 return FW_ERROR; 2890 2891 /* check for umac error */ 2892 if (iwl_fwrt_read_err_table(mvm->trans, 2893 mvm->trans->dbg.umac_error_event_table, 2894 NULL)) 2895 return FW_ERROR; 2896 2897 return FW_ALIVE; 2898 } 2899 2900 /* 2901 * This function assumes: 2902 * 1. The mutex is already held. 2903 * 2. The callee functions unlock the mutex. 2904 */ 2905 static bool 2906 iwl_mvm_choose_query_wakeup_reasons(struct iwl_mvm *mvm, 2907 struct ieee80211_vif *vif, 2908 struct iwl_d3_data *d3_data) 2909 { 2910 lockdep_assert_held(&mvm->mutex); 2911 2912 /* if FW uses status notification, status shouldn't be NULL here */ 2913 if (!d3_data->status) { 2914 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2915 u8 sta_id = mvm->net_detect ? IWL_INVALID_STA : 2916 mvmvif->deflink.ap_sta_id; 2917 2918 /* bug - FW with MLO has status notification */ 2919 WARN_ON(ieee80211_vif_is_mld(vif)); 2920 2921 d3_data->status = iwl_mvm_send_wowlan_get_status(mvm, sta_id); 2922 } 2923 2924 if (mvm->net_detect) { 2925 iwl_mvm_query_netdetect_reasons(mvm, vif, d3_data); 2926 } else { 2927 bool keep = iwl_mvm_query_wakeup_reasons(mvm, vif, 2928 d3_data->status); 2929 2930 #ifdef CONFIG_IWLWIFI_DEBUGFS 2931 if (keep) 2932 mvm->keep_vif = vif; 2933 #endif 2934 2935 return keep; 2936 } 2937 return false; 2938 } 2939 2940 #define IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT (IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET | \ 2941 IWL_WOWLAN_WAKEUP_BY_PATTERN | \ 2942 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN |\ 2943 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN_WILDCARD |\ 2944 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN |\ 2945 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN_WILDCARD) 2946 2947 static int iwl_mvm_wowlan_store_wake_pkt(struct iwl_mvm *mvm, 2948 struct iwl_wowlan_wake_pkt_notif *notif, 2949 struct iwl_wowlan_status_data *status, 2950 u32 len) 2951 { 2952 u32 data_size, packet_len = le32_to_cpu(notif->wake_packet_length); 2953 2954 if (len < sizeof(*notif)) { 2955 IWL_ERR(mvm, "Invalid WoWLAN wake packet notification!\n"); 2956 return -EIO; 2957 } 2958 2959 if (WARN_ON(!status)) { 2960 IWL_ERR(mvm, "Got wake packet notification but wowlan status data is NULL\n"); 2961 return -EIO; 2962 } 2963 2964 if (WARN_ON(!(status->wakeup_reasons & 2965 IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT))) { 2966 IWL_ERR(mvm, "Got wakeup packet but wakeup reason is %x\n", 2967 status->wakeup_reasons); 2968 return -EIO; 2969 } 2970 2971 data_size = len - offsetof(struct iwl_wowlan_wake_pkt_notif, wake_packet); 2972 2973 /* data_size got the padding from the notification, remove it. */ 2974 if (packet_len < data_size) 2975 data_size = packet_len; 2976 2977 status->wake_packet = kmemdup(notif->wake_packet, data_size, 2978 GFP_ATOMIC); 2979 2980 if (!status->wake_packet) 2981 return -ENOMEM; 2982 2983 status->wake_packet_length = packet_len; 2984 status->wake_packet_bufsize = data_size; 2985 2986 return 0; 2987 } 2988 2989 static void iwl_mvm_nd_match_info_handler(struct iwl_mvm *mvm, 2990 struct iwl_d3_data *d3_data, 2991 struct iwl_scan_offload_match_info *notif, 2992 u32 len) 2993 { 2994 struct iwl_wowlan_status_data *status = d3_data->status; 2995 struct ieee80211_vif *vif = iwl_mvm_get_bss_vif(mvm); 2996 struct iwl_mvm_nd_results *results = d3_data->nd_results; 2997 size_t i, matches_len = sizeof(struct iwl_scan_offload_profile_match) * 2998 iwl_umac_scan_get_max_profiles(mvm->fw); 2999 3000 if (IS_ERR_OR_NULL(vif)) 3001 return; 3002 3003 if (len < sizeof(struct iwl_scan_offload_match_info)) { 3004 IWL_ERR(mvm, "Invalid scan match info notification\n"); 3005 return; 3006 } 3007 3008 if (!mvm->net_detect) { 3009 IWL_ERR(mvm, "Unexpected scan match info notification\n"); 3010 return; 3011 } 3012 3013 if (!status || status->wakeup_reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) { 3014 IWL_ERR(mvm, 3015 "Ignore scan match info notification: no reason\n"); 3016 return; 3017 } 3018 3019 #ifdef CONFIG_IWLWIFI_DEBUGFS 3020 mvm->last_netdetect_scans = le32_to_cpu(notif->n_scans_done); 3021 #endif 3022 3023 results->matched_profiles = le32_to_cpu(notif->matched_profiles); 3024 IWL_INFO(mvm, "number of matched profiles=%u\n", 3025 results->matched_profiles); 3026 3027 if (results->matched_profiles) { 3028 memcpy(results->matches, notif->matches, matches_len); 3029 d3_data->nd_results_valid = true; 3030 } 3031 3032 /* no scan should be active at this point */ 3033 mvm->scan_status = 0; 3034 for (i = 0; i < mvm->max_scans; i++) 3035 mvm->scan_uid_status[i] = 0; 3036 } 3037 3038 static bool iwl_mvm_wait_d3_notif(struct iwl_notif_wait_data *notif_wait, 3039 struct iwl_rx_packet *pkt, void *data) 3040 { 3041 struct iwl_mvm *mvm = 3042 container_of(notif_wait, struct iwl_mvm, notif_wait); 3043 struct iwl_d3_data *d3_data = data; 3044 u32 len = iwl_rx_packet_payload_len(pkt); 3045 int ret; 3046 int wowlan_info_ver = iwl_fw_lookup_notif_ver(mvm->fw, 3047 PROT_OFFLOAD_GROUP, 3048 WOWLAN_INFO_NOTIFICATION, 3049 IWL_FW_CMD_VER_UNKNOWN); 3050 3051 3052 switch (WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) { 3053 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION): { 3054 3055 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_INFO) { 3056 /* We might get two notifications due to dual bss */ 3057 IWL_DEBUG_WOWLAN(mvm, 3058 "Got additional wowlan info notification\n"); 3059 break; 3060 } 3061 3062 if (wowlan_info_ver == 1) { 3063 struct iwl_wowlan_info_notif_v1 *notif_v1 = 3064 (void *)pkt->data; 3065 3066 iwl_mvm_parse_wowlan_info_notif_v1(mvm, notif_v1, 3067 d3_data->status, 3068 len); 3069 } else if (wowlan_info_ver == 3) { 3070 struct iwl_wowlan_info_notif_v3 *notif = 3071 (void *)pkt->data; 3072 3073 iwl_mvm_parse_wowlan_info_notif_v3(mvm, notif, 3074 d3_data->status, len); 3075 } else if (wowlan_info_ver == 5) { 3076 struct iwl_wowlan_info_notif *notif = 3077 (void *)pkt->data; 3078 3079 iwl_mvm_parse_wowlan_info_notif(mvm, notif, 3080 d3_data->status, len); 3081 } else { 3082 IWL_FW_CHECK(mvm, 1, 3083 "Firmware advertises unknown WoWLAN info notification %d!\n", 3084 wowlan_info_ver); 3085 return false; 3086 } 3087 3088 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_INFO; 3089 3090 if (d3_data->status && 3091 d3_data->status->wakeup_reasons & IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT) 3092 /* We are supposed to get also wake packet notif */ 3093 d3_data->notif_expected |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT; 3094 3095 break; 3096 } 3097 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION): { 3098 struct iwl_wowlan_wake_pkt_notif *notif = (void *)pkt->data; 3099 3100 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_WAKE_PKT) { 3101 /* We shouldn't get two wake packet notifications */ 3102 IWL_ERR(mvm, 3103 "Got additional wowlan wake packet notification\n"); 3104 } else { 3105 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT; 3106 len = iwl_rx_packet_payload_len(pkt); 3107 ret = iwl_mvm_wowlan_store_wake_pkt(mvm, notif, 3108 d3_data->status, 3109 len); 3110 if (ret) 3111 IWL_ERR(mvm, 3112 "Can't parse WOWLAN_WAKE_PKT_NOTIFICATION\n"); 3113 } 3114 3115 break; 3116 } 3117 case WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF): { 3118 struct iwl_scan_offload_match_info *notif = (void *)pkt->data; 3119 3120 if (d3_data->notif_received & IWL_D3_ND_MATCH_INFO) { 3121 IWL_ERR(mvm, 3122 "Got additional netdetect match info\n"); 3123 break; 3124 } 3125 3126 d3_data->notif_received |= IWL_D3_ND_MATCH_INFO; 3127 3128 /* explicitly set this in the 'expected' as well */ 3129 d3_data->notif_expected |= IWL_D3_ND_MATCH_INFO; 3130 3131 len = iwl_rx_packet_payload_len(pkt); 3132 iwl_mvm_nd_match_info_handler(mvm, d3_data, notif, len); 3133 break; 3134 } 3135 case WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION): { 3136 struct iwl_d3_end_notif *notif = (void *)pkt->data; 3137 3138 d3_data->d3_end_flags = __le32_to_cpu(notif->flags); 3139 d3_data->notif_received |= IWL_D3_NOTIF_D3_END_NOTIF; 3140 3141 break; 3142 } 3143 default: 3144 WARN_ON(1); 3145 } 3146 3147 return d3_data->notif_received == d3_data->notif_expected; 3148 } 3149 3150 static int iwl_mvm_resume_firmware(struct iwl_mvm *mvm, bool test) 3151 { 3152 int ret; 3153 enum iwl_d3_status d3_status; 3154 struct iwl_host_cmd cmd = { 3155 .id = D0I3_END_CMD, 3156 .flags = CMD_WANT_SKB, 3157 }; 3158 bool reset = fw_has_capa(&mvm->fw->ucode_capa, 3159 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 3160 3161 ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, !reset); 3162 if (ret) 3163 return ret; 3164 3165 if (d3_status != IWL_D3_STATUS_ALIVE) { 3166 IWL_INFO(mvm, "Device was reset during suspend\n"); 3167 return -ENOENT; 3168 } 3169 3170 /* 3171 * We should trigger resume flow using command only for 22000 family 3172 * AX210 and above don't need the command since they have 3173 * the doorbell interrupt. 3174 */ 3175 if (mvm->trans->mac_cfg->device_family <= IWL_DEVICE_FAMILY_22000 && 3176 fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_D0I3_END_FIRST)) { 3177 ret = iwl_mvm_send_cmd(mvm, &cmd); 3178 if (ret < 0) 3179 IWL_ERR(mvm, "Failed to send D0I3_END_CMD first (%d)\n", 3180 ret); 3181 } 3182 3183 return ret; 3184 } 3185 3186 #define IWL_MVM_D3_NOTIF_TIMEOUT (HZ / 3) 3187 3188 static int iwl_mvm_d3_notif_wait(struct iwl_mvm *mvm, 3189 struct iwl_d3_data *d3_data) 3190 { 3191 static const u16 d3_resume_notif[] = { 3192 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION), 3193 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION), 3194 WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF), 3195 WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION) 3196 }; 3197 static const u16 d3_fast_resume_notif[] = { 3198 WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION) 3199 }; 3200 struct iwl_notification_wait wait_d3_notif; 3201 int ret; 3202 3203 if (mvm->fast_resume) 3204 iwl_init_notification_wait(&mvm->notif_wait, &wait_d3_notif, 3205 d3_fast_resume_notif, 3206 ARRAY_SIZE(d3_fast_resume_notif), 3207 iwl_mvm_wait_d3_notif, d3_data); 3208 else 3209 iwl_init_notification_wait(&mvm->notif_wait, &wait_d3_notif, 3210 d3_resume_notif, 3211 ARRAY_SIZE(d3_resume_notif), 3212 iwl_mvm_wait_d3_notif, d3_data); 3213 3214 ret = iwl_mvm_resume_firmware(mvm, d3_data->test); 3215 if (ret) { 3216 iwl_remove_notification(&mvm->notif_wait, &wait_d3_notif); 3217 return ret; 3218 } 3219 3220 return iwl_wait_notification(&mvm->notif_wait, &wait_d3_notif, 3221 IWL_MVM_D3_NOTIF_TIMEOUT); 3222 } 3223 3224 static inline bool iwl_mvm_d3_resume_notif_based(struct iwl_mvm *mvm) 3225 { 3226 return iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3227 WOWLAN_INFO_NOTIFICATION, 0) && 3228 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3229 WOWLAN_WAKE_PKT_NOTIFICATION, 0) && 3230 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3231 D3_END_NOTIFICATION, 0); 3232 } 3233 3234 static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test) 3235 { 3236 struct ieee80211_vif *vif = NULL; 3237 int ret = 1; 3238 struct iwl_mvm_nd_results results = {}; 3239 struct iwl_d3_data d3_data = { 3240 .test = test, 3241 .notif_expected = 3242 IWL_D3_NOTIF_WOWLAN_INFO | 3243 IWL_D3_NOTIF_D3_END_NOTIF, 3244 .nd_results_valid = false, 3245 .nd_results = &results, 3246 }; 3247 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 3248 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 3249 bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa, 3250 IWL_UCODE_TLV_CAPA_D0I3_END_FIRST); 3251 bool resume_notif_based = iwl_mvm_d3_resume_notif_based(mvm); 3252 enum rt_status rt_status; 3253 bool keep = false; 3254 3255 mutex_lock(&mvm->mutex); 3256 3257 /* Apparently, the device went away and device_powered_off() was called, 3258 * don't even try to read the rt_status, the device is currently 3259 * inaccessible. 3260 */ 3261 if (!test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) { 3262 IWL_INFO(mvm, 3263 "Can't resume, device_powered_off() was called during wowlan\n"); 3264 goto err; 3265 } 3266 3267 mvm->last_reset_or_resume_time_jiffies = jiffies; 3268 3269 /* get the BSS vif pointer again */ 3270 vif = iwl_mvm_get_bss_vif(mvm); 3271 if (IS_ERR_OR_NULL(vif)) 3272 goto err; 3273 3274 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt); 3275 3276 rt_status = iwl_mvm_check_rt_status(mvm, vif); 3277 if (rt_status != FW_ALIVE) { 3278 set_bit(STATUS_FW_ERROR, &mvm->trans->status); 3279 if (rt_status == FW_ERROR) { 3280 IWL_ERR(mvm, "FW Error occurred during suspend. Restarting.\n"); 3281 iwl_mvm_dump_nic_error_log(mvm); 3282 iwl_dbg_tlv_time_point(&mvm->fwrt, 3283 IWL_FW_INI_TIME_POINT_FW_ASSERT, 3284 NULL); 3285 iwl_fw_dbg_collect_desc(&mvm->fwrt, 3286 &iwl_dump_desc_assert, 3287 false, 0); 3288 } 3289 ret = 1; 3290 goto err; 3291 } 3292 3293 if (resume_notif_based) { 3294 d3_data.status = kzalloc(sizeof(*d3_data.status), GFP_KERNEL); 3295 if (!d3_data.status) { 3296 IWL_ERR(mvm, "Failed to allocate wowlan status\n"); 3297 ret = -ENOMEM; 3298 goto err; 3299 } 3300 3301 ret = iwl_mvm_d3_notif_wait(mvm, &d3_data); 3302 if (ret) 3303 goto err; 3304 } else { 3305 ret = iwl_mvm_resume_firmware(mvm, test); 3306 if (ret < 0) 3307 goto err; 3308 } 3309 3310 iwl_mvm_unblock_esr(mvm, vif, IWL_MVM_ESR_BLOCKED_WOWLAN); 3311 3312 /* when reset is required we can't send these following commands */ 3313 if (d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE) 3314 goto query_wakeup_reasons; 3315 3316 /* 3317 * Query the current location and source from the D3 firmware so we 3318 * can play it back when we re-intiailize the D0 firmware 3319 */ 3320 iwl_mvm_update_changed_regdom(mvm); 3321 3322 /* Re-configure PPAG settings */ 3323 iwl_mvm_ppag_send_cmd(mvm); 3324 3325 if (!unified_image) 3326 /* Re-configure default SAR profile */ 3327 iwl_mvm_sar_select_profile(mvm, 1, 1); 3328 3329 if (mvm->net_detect && unified_image) { 3330 /* If this is a non-unified image, we restart the FW, 3331 * so no need to stop the netdetect scan. If that 3332 * fails, continue and try to get the wake-up reasons, 3333 * but trigger a HW restart by keeping a failure code 3334 * in ret. 3335 */ 3336 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT, 3337 false); 3338 } 3339 3340 query_wakeup_reasons: 3341 keep = iwl_mvm_choose_query_wakeup_reasons(mvm, vif, &d3_data); 3342 /* has unlocked the mutex, so skip that */ 3343 goto out; 3344 3345 err: 3346 mutex_unlock(&mvm->mutex); 3347 out: 3348 if (d3_data.status) 3349 kfree(d3_data.status->wake_packet); 3350 kfree(d3_data.status); 3351 iwl_mvm_free_nd(mvm); 3352 3353 if (!d3_data.test && !mvm->net_detect) 3354 ieee80211_iterate_active_interfaces_mtx(mvm->hw, 3355 IEEE80211_IFACE_ITER_NORMAL, 3356 iwl_mvm_d3_disconnect_iter, 3357 keep ? vif : NULL); 3358 3359 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 3360 3361 /* no need to reset the device in unified images, if successful */ 3362 if (unified_image && !ret) { 3363 /* nothing else to do if we already sent D0I3_END_CMD */ 3364 if (d0i3_first) 3365 return 0; 3366 3367 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3368 D3_END_NOTIFICATION, 0)) { 3369 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL); 3370 if (!ret) 3371 return 0; 3372 } else if (!(d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)) { 3373 return 0; 3374 } 3375 } 3376 3377 /* 3378 * Reconfigure the device in one of the following cases: 3379 * 1. We are not using a unified image 3380 * 2. We are using a unified image but had an error while exiting D3 3381 */ 3382 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); 3383 3384 return 1; 3385 } 3386 3387 int iwl_mvm_resume(struct ieee80211_hw *hw) 3388 { 3389 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3390 int ret; 3391 3392 ret = __iwl_mvm_resume(mvm, false); 3393 3394 iwl_mvm_resume_tcm(mvm); 3395 3396 iwl_fw_runtime_resume(&mvm->fwrt); 3397 3398 return ret; 3399 } 3400 3401 void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled) 3402 { 3403 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3404 3405 device_set_wakeup_enable(mvm->trans->dev, enabled); 3406 } 3407 3408 void iwl_mvm_fast_suspend(struct iwl_mvm *mvm) 3409 { 3410 struct iwl_d3_manager_config d3_cfg_cmd_data = {}; 3411 int ret; 3412 3413 lockdep_assert_held(&mvm->mutex); 3414 3415 IWL_DEBUG_WOWLAN(mvm, "Starting fast suspend flow\n"); 3416 3417 mvm->fast_resume = true; 3418 set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 3419 3420 WARN_ON(iwl_mvm_power_update_device(mvm)); 3421 ret = iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD, 0, 3422 sizeof(d3_cfg_cmd_data), &d3_cfg_cmd_data); 3423 if (ret) 3424 IWL_ERR(mvm, 3425 "fast suspend: couldn't send D3_CONFIG_CMD %d\n", ret); 3426 3427 ret = iwl_trans_d3_suspend(mvm->trans, false, false); 3428 if (ret) 3429 IWL_ERR(mvm, "fast suspend: trans_d3_suspend failed %d\n", ret); 3430 } 3431 3432 int iwl_mvm_fast_resume(struct iwl_mvm *mvm) 3433 { 3434 struct iwl_d3_data d3_data = { 3435 .notif_expected = 3436 IWL_D3_NOTIF_D3_END_NOTIF, 3437 }; 3438 enum rt_status rt_status; 3439 int ret; 3440 3441 lockdep_assert_held(&mvm->mutex); 3442 3443 IWL_DEBUG_WOWLAN(mvm, "Starting the fast resume flow\n"); 3444 3445 mvm->last_reset_or_resume_time_jiffies = jiffies; 3446 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt); 3447 3448 rt_status = iwl_mvm_check_rt_status(mvm, NULL); 3449 if (rt_status != FW_ALIVE) { 3450 set_bit(STATUS_FW_ERROR, &mvm->trans->status); 3451 if (rt_status == FW_ERROR) { 3452 IWL_ERR(mvm, 3453 "iwl_mvm_check_rt_status failed, device is gone during suspend\n"); 3454 iwl_mvm_dump_nic_error_log(mvm); 3455 iwl_dbg_tlv_time_point(&mvm->fwrt, 3456 IWL_FW_INI_TIME_POINT_FW_ASSERT, 3457 NULL); 3458 iwl_fw_dbg_collect_desc(&mvm->fwrt, 3459 &iwl_dump_desc_assert, 3460 false, 0); 3461 } 3462 mvm->trans->state = IWL_TRANS_NO_FW; 3463 ret = -ENODEV; 3464 3465 goto out; 3466 } 3467 ret = iwl_mvm_d3_notif_wait(mvm, &d3_data); 3468 3469 if (ret) { 3470 IWL_ERR(mvm, "Couldn't get the d3 notif %d\n", ret); 3471 mvm->trans->state = IWL_TRANS_NO_FW; 3472 } 3473 3474 out: 3475 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 3476 mvm->fast_resume = false; 3477 3478 return ret; 3479 } 3480 3481 #ifdef CONFIG_IWLWIFI_DEBUGFS 3482 static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file) 3483 { 3484 struct iwl_mvm *mvm = inode->i_private; 3485 int err; 3486 3487 if (mvm->d3_test_active) 3488 return -EBUSY; 3489 3490 file->private_data = inode->i_private; 3491 3492 iwl_mvm_pause_tcm(mvm, true); 3493 3494 iwl_fw_runtime_suspend(&mvm->fwrt); 3495 3496 /* start pseudo D3 */ 3497 rtnl_lock(); 3498 wiphy_lock(mvm->hw->wiphy); 3499 err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true); 3500 wiphy_unlock(mvm->hw->wiphy); 3501 rtnl_unlock(); 3502 if (err > 0) 3503 err = -EINVAL; 3504 if (err) 3505 return err; 3506 3507 mvm->d3_test_active = true; 3508 mvm->keep_vif = NULL; 3509 return 0; 3510 } 3511 3512 static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf, 3513 size_t count, loff_t *ppos) 3514 { 3515 struct iwl_mvm *mvm = file->private_data; 3516 unsigned long end = jiffies + 60 * HZ; 3517 u32 pme_asserted; 3518 3519 while (true) { 3520 /* read pme_ptr if available */ 3521 if (mvm->d3_test_pme_ptr) { 3522 pme_asserted = iwl_trans_read_mem32(mvm->trans, 3523 mvm->d3_test_pme_ptr); 3524 if (pme_asserted) 3525 break; 3526 } 3527 3528 #if defined(__linux__) 3529 if (msleep_interruptible(100)) 3530 #elif defined(__FreeBSD__) 3531 if (linux_msleep_interruptible(100)) 3532 #endif 3533 break; 3534 3535 if (time_is_before_jiffies(end)) { 3536 IWL_ERR(mvm, 3537 "ending pseudo-D3 with timeout after ~60 seconds\n"); 3538 return -ETIMEDOUT; 3539 } 3540 } 3541 3542 return 0; 3543 } 3544 3545 static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac, 3546 struct ieee80211_vif *vif) 3547 { 3548 /* skip the one we keep connection on */ 3549 if (_data == vif) 3550 return; 3551 3552 if (vif->type == NL80211_IFTYPE_STATION) 3553 ieee80211_connection_loss(vif); 3554 } 3555 3556 static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file) 3557 { 3558 struct iwl_mvm *mvm = inode->i_private; 3559 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 3560 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 3561 3562 mvm->d3_test_active = false; 3563 3564 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt); 3565 3566 rtnl_lock(); 3567 wiphy_lock(mvm->hw->wiphy); 3568 __iwl_mvm_resume(mvm, true); 3569 wiphy_unlock(mvm->hw->wiphy); 3570 rtnl_unlock(); 3571 3572 iwl_mvm_resume_tcm(mvm); 3573 3574 iwl_fw_runtime_resume(&mvm->fwrt); 3575 3576 iwl_abort_notification_waits(&mvm->notif_wait); 3577 if (!unified_image) { 3578 int remaining_time = 10; 3579 3580 ieee80211_restart_hw(mvm->hw); 3581 3582 /* wait for restart and disconnect all interfaces */ 3583 while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 3584 remaining_time > 0) { 3585 remaining_time--; 3586 #if defined(__linux__) 3587 msleep(1000); 3588 #elif defined(__FreeBSD__) 3589 linux_msleep(1000); 3590 #endif 3591 } 3592 3593 if (remaining_time == 0) 3594 IWL_ERR(mvm, "Timed out waiting for HW restart!\n"); 3595 } 3596 3597 ieee80211_iterate_active_interfaces_atomic( 3598 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 3599 iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif); 3600 3601 return 0; 3602 } 3603 3604 const struct file_operations iwl_dbgfs_d3_test_ops = { 3605 .open = iwl_mvm_d3_test_open, 3606 .read = iwl_mvm_d3_test_read, 3607 .release = iwl_mvm_d3_test_release, 3608 }; 3609 #endif 3610