1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2014, 2018-2024 Intel Corporation 4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH 5 * Copyright (C) 2016-2017 Intel Deutschland GmbH 6 */ 7 #include <linux/etherdevice.h> 8 #include <linux/ip.h> 9 #include <linux/fs.h> 10 #include <net/cfg80211.h> 11 #include <net/ipv6.h> 12 #include <net/tcp.h> 13 #include <net/addrconf.h> 14 #include "iwl-modparams.h" 15 #include "fw-api.h" 16 #include "mvm.h" 17 #include "fw/img.h" 18 19 void iwl_mvm_set_rekey_data(struct ieee80211_hw *hw, 20 struct ieee80211_vif *vif, 21 struct cfg80211_gtk_rekey_data *data) 22 { 23 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 24 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 25 26 mutex_lock(&mvm->mutex); 27 28 mvmvif->rekey_data.kek_len = data->kek_len; 29 mvmvif->rekey_data.kck_len = data->kck_len; 30 memcpy(mvmvif->rekey_data.kek, data->kek, data->kek_len); 31 memcpy(mvmvif->rekey_data.kck, data->kck, data->kck_len); 32 mvmvif->rekey_data.akm = data->akm & 0xFF; 33 mvmvif->rekey_data.replay_ctr = 34 cpu_to_le64(be64_to_cpup((const __be64 *)data->replay_ctr)); 35 mvmvif->rekey_data.valid = true; 36 37 mutex_unlock(&mvm->mutex); 38 } 39 40 #if IS_ENABLED(CONFIG_IPV6) 41 void iwl_mvm_ipv6_addr_change(struct ieee80211_hw *hw, 42 struct ieee80211_vif *vif, 43 struct inet6_dev *idev) 44 { 45 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 46 struct inet6_ifaddr *ifa; 47 int idx = 0; 48 49 memset(mvmvif->tentative_addrs, 0, sizeof(mvmvif->tentative_addrs)); 50 51 read_lock_bh(&idev->lock); 52 list_for_each_entry(ifa, &idev->addr_list, if_list) { 53 mvmvif->target_ipv6_addrs[idx] = ifa->addr; 54 if (ifa->flags & IFA_F_TENTATIVE) 55 __set_bit(idx, mvmvif->tentative_addrs); 56 idx++; 57 if (idx >= IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_MAX) 58 break; 59 } 60 read_unlock_bh(&idev->lock); 61 62 mvmvif->num_target_ipv6_addrs = idx; 63 } 64 #endif 65 66 void iwl_mvm_set_default_unicast_key(struct ieee80211_hw *hw, 67 struct ieee80211_vif *vif, int idx) 68 { 69 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 70 71 mvmvif->tx_key_idx = idx; 72 } 73 74 static void iwl_mvm_convert_p1k(u16 *p1k, __le16 *out) 75 { 76 int i; 77 78 for (i = 0; i < IWL_P1K_SIZE; i++) 79 out[i] = cpu_to_le16(p1k[i]); 80 } 81 82 static const u8 *iwl_mvm_find_max_pn(struct ieee80211_key_conf *key, 83 struct iwl_mvm_key_pn *ptk_pn, 84 struct ieee80211_key_seq *seq, 85 int tid, int queues) 86 { 87 const u8 *ret = seq->ccmp.pn; 88 int i; 89 90 /* get the PN from mac80211, used on the default queue */ 91 ieee80211_get_key_rx_seq(key, tid, seq); 92 93 /* and use the internal data for the other queues */ 94 for (i = 1; i < queues; i++) { 95 const u8 *tmp = ptk_pn->q[i].pn[tid]; 96 97 if (memcmp(ret, tmp, IEEE80211_CCMP_PN_LEN) <= 0) 98 ret = tmp; 99 } 100 101 return ret; 102 } 103 104 struct wowlan_key_reprogram_data { 105 bool error; 106 int wep_key_idx; 107 }; 108 109 static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw, 110 struct ieee80211_vif *vif, 111 struct ieee80211_sta *sta, 112 struct ieee80211_key_conf *key, 113 void *_data) 114 { 115 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 116 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 117 struct wowlan_key_reprogram_data *data = _data; 118 int ret; 119 120 switch (key->cipher) { 121 case WLAN_CIPHER_SUITE_WEP40: 122 case WLAN_CIPHER_SUITE_WEP104: { /* hack it for now */ 123 struct { 124 struct iwl_mvm_wep_key_cmd wep_key_cmd; 125 struct iwl_mvm_wep_key wep_key; 126 } __packed wkc = { 127 .wep_key_cmd.mac_id_n_color = 128 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 129 mvmvif->color)), 130 .wep_key_cmd.num_keys = 1, 131 /* firmware sets STA_KEY_FLG_WEP_13BYTES */ 132 .wep_key_cmd.decryption_type = STA_KEY_FLG_WEP, 133 .wep_key.key_index = key->keyidx, 134 .wep_key.key_size = key->keylen, 135 }; 136 137 /* 138 * This will fail -- the key functions don't set support 139 * pairwise WEP keys. However, that's better than silently 140 * failing WoWLAN. Or maybe not? 141 */ 142 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) 143 break; 144 145 memcpy(&wkc.wep_key.key[3], key->key, key->keylen); 146 if (key->keyidx == mvmvif->tx_key_idx) { 147 /* TX key must be at offset 0 */ 148 wkc.wep_key.key_offset = 0; 149 } else { 150 /* others start at 1 */ 151 data->wep_key_idx++; 152 wkc.wep_key.key_offset = data->wep_key_idx; 153 } 154 155 mutex_lock(&mvm->mutex); 156 ret = iwl_mvm_send_cmd_pdu(mvm, WEP_KEY, 0, sizeof(wkc), &wkc); 157 data->error = ret != 0; 158 159 mvm->ptk_ivlen = key->iv_len; 160 mvm->ptk_icvlen = key->icv_len; 161 mvm->gtk_ivlen = key->iv_len; 162 mvm->gtk_icvlen = key->icv_len; 163 mutex_unlock(&mvm->mutex); 164 165 /* don't upload key again */ 166 return; 167 } 168 default: 169 data->error = true; 170 return; 171 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 172 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 173 return; 174 case WLAN_CIPHER_SUITE_AES_CMAC: 175 /* 176 * Ignore CMAC keys -- the WoWLAN firmware doesn't support them 177 * but we also shouldn't abort suspend due to that. It does have 178 * support for the IGTK key renewal, but doesn't really use the 179 * IGTK for anything. This means we could spuriously wake up or 180 * be deauthenticated, but that was considered acceptable. 181 */ 182 return; 183 case WLAN_CIPHER_SUITE_TKIP: 184 case WLAN_CIPHER_SUITE_CCMP: 185 case WLAN_CIPHER_SUITE_GCMP: 186 case WLAN_CIPHER_SUITE_GCMP_256: 187 break; 188 } 189 190 mutex_lock(&mvm->mutex); 191 /* 192 * The D3 firmware hardcodes the key offset 0 as the key it 193 * uses to transmit packets to the AP, i.e. the PTK. 194 */ 195 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) { 196 mvm->ptk_ivlen = key->iv_len; 197 mvm->ptk_icvlen = key->icv_len; 198 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 0); 199 } else { 200 /* 201 * firmware only supports TSC/RSC for a single key, 202 * so if there are multiple keep overwriting them 203 * with new ones -- this relies on mac80211 doing 204 * list_add_tail(). 205 */ 206 mvm->gtk_ivlen = key->iv_len; 207 mvm->gtk_icvlen = key->icv_len; 208 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 1); 209 } 210 mutex_unlock(&mvm->mutex); 211 data->error = ret != 0; 212 } 213 214 struct wowlan_key_rsc_tsc_data { 215 struct iwl_wowlan_rsc_tsc_params_cmd_v4 *rsc_tsc; 216 bool have_rsc_tsc; 217 }; 218 219 static void iwl_mvm_wowlan_get_rsc_tsc_data(struct ieee80211_hw *hw, 220 struct ieee80211_vif *vif, 221 struct ieee80211_sta *sta, 222 struct ieee80211_key_conf *key, 223 void *_data) 224 { 225 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 226 struct wowlan_key_rsc_tsc_data *data = _data; 227 struct aes_sc *aes_sc; 228 struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL; 229 struct ieee80211_key_seq seq; 230 int i; 231 232 switch (key->cipher) { 233 default: 234 break; 235 case WLAN_CIPHER_SUITE_TKIP: 236 if (sta) { 237 u64 pn64; 238 239 tkip_sc = 240 data->rsc_tsc->params.all_tsc_rsc.tkip.unicast_rsc; 241 tkip_tx_sc = 242 &data->rsc_tsc->params.all_tsc_rsc.tkip.tsc; 243 244 pn64 = atomic64_read(&key->tx_pn); 245 tkip_tx_sc->iv16 = cpu_to_le16(TKIP_PN_TO_IV16(pn64)); 246 tkip_tx_sc->iv32 = cpu_to_le32(TKIP_PN_TO_IV32(pn64)); 247 } else { 248 tkip_sc = 249 data->rsc_tsc->params.all_tsc_rsc.tkip.multicast_rsc; 250 } 251 252 /* 253 * For non-QoS this relies on the fact that both the uCode and 254 * mac80211 use TID 0 (as they need to to avoid replay attacks) 255 * for checking the IV in the frames. 256 */ 257 for (i = 0; i < IWL_NUM_RSC; i++) { 258 ieee80211_get_key_rx_seq(key, i, &seq); 259 tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16); 260 tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32); 261 } 262 263 data->have_rsc_tsc = true; 264 break; 265 case WLAN_CIPHER_SUITE_CCMP: 266 case WLAN_CIPHER_SUITE_GCMP: 267 case WLAN_CIPHER_SUITE_GCMP_256: 268 if (sta) { 269 struct aes_sc *aes_tx_sc; 270 u64 pn64; 271 272 aes_sc = 273 data->rsc_tsc->params.all_tsc_rsc.aes.unicast_rsc; 274 aes_tx_sc = 275 &data->rsc_tsc->params.all_tsc_rsc.aes.tsc; 276 277 pn64 = atomic64_read(&key->tx_pn); 278 aes_tx_sc->pn = cpu_to_le64(pn64); 279 } else { 280 aes_sc = 281 data->rsc_tsc->params.all_tsc_rsc.aes.multicast_rsc; 282 } 283 284 /* 285 * For non-QoS this relies on the fact that both the uCode and 286 * mac80211/our RX code use TID 0 for checking the PN. 287 */ 288 if (sta && iwl_mvm_has_new_rx_api(mvm)) { 289 struct iwl_mvm_sta *mvmsta; 290 struct iwl_mvm_key_pn *ptk_pn; 291 const u8 *pn; 292 293 mvmsta = iwl_mvm_sta_from_mac80211(sta); 294 rcu_read_lock(); 295 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]); 296 if (WARN_ON(!ptk_pn)) { 297 rcu_read_unlock(); 298 break; 299 } 300 301 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 302 pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i, 303 mvm->trans->num_rx_queues); 304 aes_sc[i].pn = cpu_to_le64((u64)pn[5] | 305 ((u64)pn[4] << 8) | 306 ((u64)pn[3] << 16) | 307 ((u64)pn[2] << 24) | 308 ((u64)pn[1] << 32) | 309 ((u64)pn[0] << 40)); 310 } 311 312 rcu_read_unlock(); 313 } else { 314 for (i = 0; i < IWL_NUM_RSC; i++) { 315 u8 *pn = seq.ccmp.pn; 316 317 ieee80211_get_key_rx_seq(key, i, &seq); 318 aes_sc[i].pn = cpu_to_le64((u64)pn[5] | 319 ((u64)pn[4] << 8) | 320 ((u64)pn[3] << 16) | 321 ((u64)pn[2] << 24) | 322 ((u64)pn[1] << 32) | 323 ((u64)pn[0] << 40)); 324 } 325 } 326 data->have_rsc_tsc = true; 327 break; 328 } 329 } 330 331 struct wowlan_key_rsc_v5_data { 332 struct iwl_wowlan_rsc_tsc_params_cmd *rsc; 333 bool have_rsc; 334 int gtks; 335 int gtk_ids[4]; 336 }; 337 338 static void iwl_mvm_wowlan_get_rsc_v5_data(struct ieee80211_hw *hw, 339 struct ieee80211_vif *vif, 340 struct ieee80211_sta *sta, 341 struct ieee80211_key_conf *key, 342 void *_data) 343 { 344 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 345 struct wowlan_key_rsc_v5_data *data = _data; 346 struct ieee80211_key_seq seq; 347 __le64 *rsc; 348 int i; 349 350 /* only for ciphers that can be PTK/GTK */ 351 switch (key->cipher) { 352 default: 353 return; 354 case WLAN_CIPHER_SUITE_TKIP: 355 case WLAN_CIPHER_SUITE_CCMP: 356 case WLAN_CIPHER_SUITE_GCMP: 357 case WLAN_CIPHER_SUITE_GCMP_256: 358 break; 359 } 360 361 if (sta) { 362 rsc = data->rsc->ucast_rsc; 363 } else { 364 if (WARN_ON(data->gtks >= ARRAY_SIZE(data->gtk_ids))) 365 return; 366 data->gtk_ids[data->gtks] = key->keyidx; 367 rsc = data->rsc->mcast_rsc[data->gtks % 2]; 368 if (WARN_ON(key->keyidx >= 369 ARRAY_SIZE(data->rsc->mcast_key_id_map))) 370 return; 371 data->rsc->mcast_key_id_map[key->keyidx] = data->gtks % 2; 372 if (data->gtks >= 2) { 373 int prev = data->gtks - 2; 374 int prev_idx = data->gtk_ids[prev]; 375 376 data->rsc->mcast_key_id_map[prev_idx] = 377 IWL_MCAST_KEY_MAP_INVALID; 378 } 379 data->gtks++; 380 } 381 382 switch (key->cipher) { 383 default: 384 WARN_ON(1); 385 break; 386 case WLAN_CIPHER_SUITE_TKIP: 387 388 /* 389 * For non-QoS this relies on the fact that both the uCode and 390 * mac80211 use TID 0 (as they need to to avoid replay attacks) 391 * for checking the IV in the frames. 392 */ 393 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 394 ieee80211_get_key_rx_seq(key, i, &seq); 395 396 rsc[i] = cpu_to_le64(((u64)seq.tkip.iv32 << 16) | 397 seq.tkip.iv16); 398 } 399 400 data->have_rsc = true; 401 break; 402 case WLAN_CIPHER_SUITE_CCMP: 403 case WLAN_CIPHER_SUITE_GCMP: 404 case WLAN_CIPHER_SUITE_GCMP_256: 405 /* 406 * For non-QoS this relies on the fact that both the uCode and 407 * mac80211/our RX code use TID 0 for checking the PN. 408 */ 409 if (sta) { 410 struct iwl_mvm_sta *mvmsta; 411 struct iwl_mvm_key_pn *ptk_pn; 412 const u8 *pn; 413 414 mvmsta = iwl_mvm_sta_from_mac80211(sta); 415 rcu_read_lock(); 416 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]); 417 if (WARN_ON(!ptk_pn)) { 418 rcu_read_unlock(); 419 break; 420 } 421 422 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 423 pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i, 424 mvm->trans->num_rx_queues); 425 rsc[i] = cpu_to_le64((u64)pn[5] | 426 ((u64)pn[4] << 8) | 427 ((u64)pn[3] << 16) | 428 ((u64)pn[2] << 24) | 429 ((u64)pn[1] << 32) | 430 ((u64)pn[0] << 40)); 431 } 432 433 rcu_read_unlock(); 434 } else { 435 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 436 u8 *pn = seq.ccmp.pn; 437 438 ieee80211_get_key_rx_seq(key, i, &seq); 439 rsc[i] = cpu_to_le64((u64)pn[5] | 440 ((u64)pn[4] << 8) | 441 ((u64)pn[3] << 16) | 442 ((u64)pn[2] << 24) | 443 ((u64)pn[1] << 32) | 444 ((u64)pn[0] << 40)); 445 } 446 } 447 data->have_rsc = true; 448 break; 449 } 450 } 451 452 static int iwl_mvm_wowlan_config_rsc_tsc(struct iwl_mvm *mvm, 453 struct ieee80211_vif *vif, 454 struct iwl_mvm_vif_link_info *mvm_link) 455 { 456 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TSC_RSC_PARAM, 457 IWL_FW_CMD_VER_UNKNOWN); 458 int ret; 459 460 if (ver == 5) { 461 struct wowlan_key_rsc_v5_data data = {}; 462 int i; 463 464 data.rsc = kzalloc(sizeof(*data.rsc), GFP_KERNEL); 465 if (!data.rsc) 466 return -ENOMEM; 467 468 for (i = 0; i < ARRAY_SIZE(data.rsc->mcast_key_id_map); i++) 469 data.rsc->mcast_key_id_map[i] = 470 IWL_MCAST_KEY_MAP_INVALID; 471 data.rsc->sta_id = cpu_to_le32(mvm_link->ap_sta_id); 472 473 ieee80211_iter_keys(mvm->hw, vif, 474 iwl_mvm_wowlan_get_rsc_v5_data, 475 &data); 476 477 if (data.have_rsc) 478 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM, 479 CMD_ASYNC, sizeof(*data.rsc), 480 data.rsc); 481 else 482 ret = 0; 483 kfree(data.rsc); 484 } else if (ver == 4 || ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN) { 485 struct wowlan_key_rsc_tsc_data data = {}; 486 int size; 487 488 data.rsc_tsc = kzalloc(sizeof(*data.rsc_tsc), GFP_KERNEL); 489 if (!data.rsc_tsc) 490 return -ENOMEM; 491 492 if (ver == 4) { 493 size = sizeof(*data.rsc_tsc); 494 data.rsc_tsc->sta_id = 495 cpu_to_le32(mvm_link->ap_sta_id); 496 } else { 497 /* ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN */ 498 size = sizeof(data.rsc_tsc->params); 499 } 500 501 ieee80211_iter_keys(mvm->hw, vif, 502 iwl_mvm_wowlan_get_rsc_tsc_data, 503 &data); 504 505 if (data.have_rsc_tsc) 506 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM, 507 CMD_ASYNC, size, 508 data.rsc_tsc); 509 else 510 ret = 0; 511 kfree(data.rsc_tsc); 512 } else { 513 ret = 0; 514 WARN_ON_ONCE(1); 515 } 516 517 return ret; 518 } 519 520 struct wowlan_key_tkip_data { 521 struct iwl_wowlan_tkip_params_cmd tkip; 522 bool have_tkip_keys; 523 }; 524 525 static void iwl_mvm_wowlan_get_tkip_data(struct ieee80211_hw *hw, 526 struct ieee80211_vif *vif, 527 struct ieee80211_sta *sta, 528 struct ieee80211_key_conf *key, 529 void *_data) 530 { 531 struct wowlan_key_tkip_data *data = _data; 532 struct iwl_p1k_cache *rx_p1ks; 533 u8 *rx_mic_key; 534 struct ieee80211_key_seq seq; 535 u32 cur_rx_iv32 = 0; 536 u16 p1k[IWL_P1K_SIZE]; 537 int i; 538 539 switch (key->cipher) { 540 default: 541 break; 542 case WLAN_CIPHER_SUITE_TKIP: 543 if (sta) { 544 u64 pn64; 545 546 rx_p1ks = data->tkip.rx_uni; 547 548 pn64 = atomic64_read(&key->tx_pn); 549 550 ieee80211_get_tkip_p1k_iv(key, TKIP_PN_TO_IV32(pn64), 551 p1k); 552 iwl_mvm_convert_p1k(p1k, data->tkip.tx.p1k); 553 554 memcpy(data->tkip.mic_keys.tx, 555 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], 556 IWL_MIC_KEY_SIZE); 557 558 rx_mic_key = data->tkip.mic_keys.rx_unicast; 559 } else { 560 rx_p1ks = data->tkip.rx_multi; 561 rx_mic_key = data->tkip.mic_keys.rx_mcast; 562 } 563 564 for (i = 0; i < IWL_NUM_RSC; i++) { 565 ieee80211_get_key_rx_seq(key, i, &seq); 566 /* wrapping isn't allowed, AP must rekey */ 567 if (seq.tkip.iv32 > cur_rx_iv32) 568 cur_rx_iv32 = seq.tkip.iv32; 569 } 570 571 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid, 572 cur_rx_iv32, p1k); 573 iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k); 574 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid, 575 cur_rx_iv32 + 1, p1k); 576 iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k); 577 578 memcpy(rx_mic_key, 579 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], 580 IWL_MIC_KEY_SIZE); 581 582 data->have_tkip_keys = true; 583 break; 584 } 585 } 586 587 struct wowlan_key_gtk_type_iter { 588 struct iwl_wowlan_kek_kck_material_cmd_v4 *kek_kck_cmd; 589 }; 590 591 static void iwl_mvm_wowlan_gtk_type_iter(struct ieee80211_hw *hw, 592 struct ieee80211_vif *vif, 593 struct ieee80211_sta *sta, 594 struct ieee80211_key_conf *key, 595 void *_data) 596 { 597 struct wowlan_key_gtk_type_iter *data = _data; 598 599 switch (key->cipher) { 600 default: 601 return; 602 case WLAN_CIPHER_SUITE_TKIP: 603 if (!sta) 604 data->kek_kck_cmd->gtk_cipher = 605 cpu_to_le32(STA_KEY_FLG_TKIP); 606 return; 607 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 608 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 609 data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_GCMP); 610 return; 611 case WLAN_CIPHER_SUITE_AES_CMAC: 612 data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_CCM); 613 return; 614 case WLAN_CIPHER_SUITE_CCMP: 615 if (!sta) 616 data->kek_kck_cmd->gtk_cipher = 617 cpu_to_le32(STA_KEY_FLG_CCM); 618 return; 619 case WLAN_CIPHER_SUITE_GCMP: 620 case WLAN_CIPHER_SUITE_GCMP_256: 621 if (!sta) 622 data->kek_kck_cmd->gtk_cipher = 623 cpu_to_le32(STA_KEY_FLG_GCMP); 624 return; 625 } 626 } 627 628 static int iwl_mvm_send_patterns_v1(struct iwl_mvm *mvm, 629 struct cfg80211_wowlan *wowlan) 630 { 631 struct iwl_wowlan_patterns_cmd_v1 *pattern_cmd; 632 struct iwl_host_cmd cmd = { 633 .id = WOWLAN_PATTERNS, 634 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 635 }; 636 int i, err; 637 638 if (!wowlan->n_patterns) 639 return 0; 640 641 cmd.len[0] = struct_size(pattern_cmd, patterns, wowlan->n_patterns); 642 643 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL); 644 if (!pattern_cmd) 645 return -ENOMEM; 646 647 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns); 648 649 for (i = 0; i < wowlan->n_patterns; i++) { 650 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8); 651 652 memcpy(&pattern_cmd->patterns[i].mask, 653 wowlan->patterns[i].mask, mask_len); 654 memcpy(&pattern_cmd->patterns[i].pattern, 655 wowlan->patterns[i].pattern, 656 wowlan->patterns[i].pattern_len); 657 pattern_cmd->patterns[i].mask_size = mask_len; 658 pattern_cmd->patterns[i].pattern_size = 659 wowlan->patterns[i].pattern_len; 660 } 661 662 cmd.data[0] = pattern_cmd; 663 err = iwl_mvm_send_cmd(mvm, &cmd); 664 kfree(pattern_cmd); 665 return err; 666 } 667 668 static int iwl_mvm_send_patterns(struct iwl_mvm *mvm, 669 struct iwl_mvm_vif_link_info *mvm_link, 670 struct cfg80211_wowlan *wowlan) 671 { 672 struct iwl_wowlan_patterns_cmd *pattern_cmd; 673 struct iwl_host_cmd cmd = { 674 .id = WOWLAN_PATTERNS, 675 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 676 }; 677 int i, err; 678 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id, 679 IWL_FW_CMD_VER_UNKNOWN); 680 681 if (!wowlan->n_patterns) 682 return 0; 683 684 cmd.len[0] = sizeof(*pattern_cmd) + 685 wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern_v2); 686 687 pattern_cmd = kzalloc(cmd.len[0], GFP_KERNEL); 688 if (!pattern_cmd) 689 return -ENOMEM; 690 691 pattern_cmd->n_patterns = wowlan->n_patterns; 692 if (ver >= 3) 693 pattern_cmd->sta_id = mvm_link->ap_sta_id; 694 695 for (i = 0; i < wowlan->n_patterns; i++) { 696 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8); 697 698 pattern_cmd->patterns[i].pattern_type = 699 WOWLAN_PATTERN_TYPE_BITMASK; 700 701 memcpy(&pattern_cmd->patterns[i].u.bitmask.mask, 702 wowlan->patterns[i].mask, mask_len); 703 memcpy(&pattern_cmd->patterns[i].u.bitmask.pattern, 704 wowlan->patterns[i].pattern, 705 wowlan->patterns[i].pattern_len); 706 pattern_cmd->patterns[i].u.bitmask.mask_size = mask_len; 707 pattern_cmd->patterns[i].u.bitmask.pattern_size = 708 wowlan->patterns[i].pattern_len; 709 } 710 711 cmd.data[0] = pattern_cmd; 712 err = iwl_mvm_send_cmd(mvm, &cmd); 713 kfree(pattern_cmd); 714 return err; 715 } 716 717 static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 718 struct ieee80211_sta *ap_sta) 719 { 720 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 721 struct ieee80211_chanctx_conf *ctx; 722 u8 chains_static, chains_dynamic; 723 struct cfg80211_chan_def chandef, ap_def; 724 int ret, i; 725 struct iwl_binding_cmd_v1 binding_cmd = {}; 726 struct iwl_time_quota_cmd quota_cmd = {}; 727 struct iwl_time_quota_data *quota; 728 u32 status; 729 730 if (WARN_ON_ONCE(iwl_mvm_is_cdb_supported(mvm) || 731 ieee80211_vif_is_mld(vif))) 732 return -EINVAL; 733 734 /* add back the PHY */ 735 if (WARN_ON(!mvmvif->deflink.phy_ctxt)) 736 return -EINVAL; 737 738 rcu_read_lock(); 739 ctx = rcu_dereference(vif->bss_conf.chanctx_conf); 740 if (WARN_ON(!ctx)) { 741 rcu_read_unlock(); 742 return -EINVAL; 743 } 744 chandef = ctx->def; 745 ap_def = ctx->ap; 746 chains_static = ctx->rx_chains_static; 747 chains_dynamic = ctx->rx_chains_dynamic; 748 rcu_read_unlock(); 749 750 ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->deflink.phy_ctxt, &chandef, 751 &ap_def, chains_static, chains_dynamic); 752 if (ret) 753 return ret; 754 755 /* add back the MAC */ 756 mvmvif->uploaded = false; 757 758 if (WARN_ON(!vif->cfg.assoc)) 759 return -EINVAL; 760 761 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 762 if (ret) 763 return ret; 764 765 /* add back binding - XXX refactor? */ 766 binding_cmd.id_and_color = 767 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id, 768 mvmvif->deflink.phy_ctxt->color)); 769 binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD); 770 binding_cmd.phy = 771 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id, 772 mvmvif->deflink.phy_ctxt->color)); 773 binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 774 mvmvif->color)); 775 for (i = 1; i < MAX_MACS_IN_BINDING; i++) 776 binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID); 777 778 status = 0; 779 ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD, 780 IWL_BINDING_CMD_SIZE_V1, &binding_cmd, 781 &status); 782 if (ret) { 783 IWL_ERR(mvm, "Failed to add binding: %d\n", ret); 784 return ret; 785 } 786 787 if (status) { 788 IWL_ERR(mvm, "Binding command failed: %u\n", status); 789 return -EIO; 790 } 791 792 ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false, 0); 793 if (ret) 794 return ret; 795 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->deflink.ap_sta_id], 796 ap_sta); 797 798 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 799 if (ret) 800 return ret; 801 802 /* and some quota */ 803 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, 0); 804 quota->id_and_color = 805 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id, 806 mvmvif->deflink.phy_ctxt->color)); 807 quota->quota = cpu_to_le32(IWL_MVM_MAX_QUOTA); 808 quota->max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA); 809 810 for (i = 1; i < MAX_BINDINGS; i++) { 811 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, i); 812 quota->id_and_color = cpu_to_le32(FW_CTXT_INVALID); 813 } 814 815 ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0, 816 iwl_mvm_quota_cmd_size(mvm), "a_cmd); 817 if (ret) 818 IWL_ERR(mvm, "Failed to send quota: %d\n", ret); 819 820 if (iwl_mvm_is_lar_supported(mvm) && iwl_mvm_init_fw_regd(mvm, false)) 821 IWL_ERR(mvm, "Failed to initialize D3 LAR information\n"); 822 823 return 0; 824 } 825 826 static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm, 827 struct ieee80211_vif *vif) 828 { 829 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 830 struct iwl_nonqos_seq_query_cmd query_cmd = { 831 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET), 832 .mac_id_n_color = 833 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 834 mvmvif->color)), 835 }; 836 struct iwl_host_cmd cmd = { 837 .id = NON_QOS_TX_COUNTER_CMD, 838 .flags = CMD_WANT_SKB, 839 }; 840 int err; 841 u32 size; 842 843 cmd.data[0] = &query_cmd; 844 cmd.len[0] = sizeof(query_cmd); 845 846 err = iwl_mvm_send_cmd(mvm, &cmd); 847 if (err) 848 return err; 849 850 size = iwl_rx_packet_payload_len(cmd.resp_pkt); 851 if (size < sizeof(__le16)) { 852 err = -EINVAL; 853 } else { 854 err = le16_to_cpup((__le16 *)cmd.resp_pkt->data); 855 /* firmware returns next, not last-used seqno */ 856 err = (u16) (err - 0x10); 857 } 858 859 iwl_free_resp(&cmd); 860 return err; 861 } 862 863 void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 864 { 865 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 866 struct iwl_nonqos_seq_query_cmd query_cmd = { 867 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET), 868 .mac_id_n_color = 869 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 870 mvmvif->color)), 871 .value = cpu_to_le16(mvmvif->seqno), 872 }; 873 874 /* return if called during restart, not resume from D3 */ 875 if (!mvmvif->seqno_valid) 876 return; 877 878 mvmvif->seqno_valid = false; 879 880 if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0, 881 sizeof(query_cmd), &query_cmd)) 882 IWL_ERR(mvm, "failed to set non-QoS seqno\n"); 883 } 884 885 static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm) 886 { 887 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 888 889 iwl_mvm_stop_device(mvm); 890 /* 891 * Set the HW restart bit -- this is mostly true as we're 892 * going to load new firmware and reprogram that, though 893 * the reprogramming is going to be manual to avoid adding 894 * all the MACs that aren't support. 895 * We don't have to clear up everything though because the 896 * reprogramming is manual. When we resume, we'll actually 897 * go through a proper restart sequence again to switch 898 * back to the runtime firmware image. 899 */ 900 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 901 902 /* the fw is reset, so all the keys are cleared */ 903 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); 904 905 mvm->ptk_ivlen = 0; 906 mvm->ptk_icvlen = 0; 907 mvm->ptk_ivlen = 0; 908 mvm->ptk_icvlen = 0; 909 910 return iwl_mvm_load_d3_fw(mvm); 911 } 912 913 static int 914 iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm, 915 struct cfg80211_wowlan *wowlan, 916 struct iwl_wowlan_config_cmd *wowlan_config_cmd, 917 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif, 918 struct ieee80211_sta *ap_sta) 919 { 920 struct iwl_mvm_sta *mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta); 921 922 /* TODO: wowlan_config_cmd->wowlan_ba_teardown_tids */ 923 924 wowlan_config_cmd->is_11n_connection = 925 ap_sta->deflink.ht_cap.ht_supported; 926 wowlan_config_cmd->flags = ENABLE_L3_FILTERING | 927 ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING; 928 929 if (ap_sta->mfp) 930 wowlan_config_cmd->flags |= IS_11W_ASSOC; 931 932 if (iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_CONFIGURATION, 0) < 6) { 933 /* Query the last used seqno and set it */ 934 int ret = iwl_mvm_get_last_nonqos_seq(mvm, vif); 935 936 if (ret < 0) 937 return ret; 938 939 wowlan_config_cmd->non_qos_seq = cpu_to_le16(ret); 940 } 941 942 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, wowlan_config_cmd); 943 944 if (wowlan->disconnect) 945 wowlan_config_cmd->wakeup_filter |= 946 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS | 947 IWL_WOWLAN_WAKEUP_LINK_CHANGE); 948 if (wowlan->magic_pkt) 949 wowlan_config_cmd->wakeup_filter |= 950 cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET); 951 if (wowlan->gtk_rekey_failure) 952 wowlan_config_cmd->wakeup_filter |= 953 cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL); 954 if (wowlan->eap_identity_req) 955 wowlan_config_cmd->wakeup_filter |= 956 cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ); 957 if (wowlan->four_way_handshake) 958 wowlan_config_cmd->wakeup_filter |= 959 cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE); 960 if (wowlan->n_patterns) 961 wowlan_config_cmd->wakeup_filter |= 962 cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH); 963 964 if (wowlan->rfkill_release) 965 wowlan_config_cmd->wakeup_filter |= 966 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT); 967 968 if (wowlan->tcp) { 969 /* 970 * Set the "link change" (really "link lost") flag as well 971 * since that implies losing the TCP connection. 972 */ 973 wowlan_config_cmd->wakeup_filter |= 974 cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS | 975 IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE | 976 IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET | 977 IWL_WOWLAN_WAKEUP_LINK_CHANGE); 978 } 979 980 if (wowlan->any) { 981 wowlan_config_cmd->wakeup_filter |= 982 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS | 983 IWL_WOWLAN_WAKEUP_LINK_CHANGE | 984 IWL_WOWLAN_WAKEUP_RX_FRAME | 985 IWL_WOWLAN_WAKEUP_BCN_FILTERING); 986 } 987 988 return 0; 989 } 990 991 static int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm, 992 struct ieee80211_vif *vif, 993 struct iwl_mvm_vif_link_info *mvm_link) 994 { 995 bool unified = fw_has_capa(&mvm->fw->ucode_capa, 996 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 997 struct wowlan_key_reprogram_data key_data = {}; 998 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 999 int ret; 1000 u8 cmd_ver; 1001 size_t cmd_size; 1002 1003 if (!unified) { 1004 /* 1005 * if we have to configure keys, call ieee80211_iter_keys(), 1006 * as we need non-atomic context in order to take the 1007 * required locks. 1008 */ 1009 /* 1010 * Note that currently we don't use CMD_ASYNC in the iterator. 1011 * In case of key_data.configure_keys, all the configured 1012 * commands are SYNC, and iwl_mvm_wowlan_program_keys() will 1013 * take care of locking/unlocking mvm->mutex. 1014 */ 1015 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_program_keys, 1016 &key_data); 1017 1018 if (key_data.error) 1019 return -EIO; 1020 } 1021 1022 ret = iwl_mvm_wowlan_config_rsc_tsc(mvm, vif, mvm_link); 1023 if (ret) 1024 return ret; 1025 1026 if (!fw_has_api(&mvm->fw->ucode_capa, 1027 IWL_UCODE_TLV_API_TKIP_MIC_KEYS)) { 1028 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TKIP_PARAM, 1029 IWL_FW_CMD_VER_UNKNOWN); 1030 struct wowlan_key_tkip_data tkip_data = {}; 1031 int size; 1032 1033 if (ver == 2) { 1034 size = sizeof(tkip_data.tkip); 1035 tkip_data.tkip.sta_id = 1036 cpu_to_le32(mvm_link->ap_sta_id); 1037 } else if (ver == 1 || ver == IWL_FW_CMD_VER_UNKNOWN) { 1038 size = sizeof(struct iwl_wowlan_tkip_params_cmd_ver_1); 1039 } else { 1040 WARN_ON_ONCE(1); 1041 return -EINVAL; 1042 } 1043 1044 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_get_tkip_data, 1045 &tkip_data); 1046 1047 if (tkip_data.have_tkip_keys) { 1048 /* send relevant data according to CMD version */ 1049 ret = iwl_mvm_send_cmd_pdu(mvm, 1050 WOWLAN_TKIP_PARAM, 1051 CMD_ASYNC, size, 1052 &tkip_data.tkip); 1053 if (ret) 1054 return ret; 1055 } 1056 } 1057 1058 /* configure rekey data only if offloaded rekey is supported (d3) */ 1059 if (mvmvif->rekey_data.valid) { 1060 struct iwl_wowlan_kek_kck_material_cmd_v4 kek_kck_cmd = {}; 1061 struct iwl_wowlan_kek_kck_material_cmd_v4 *_kek_kck_cmd = 1062 &kek_kck_cmd; 1063 struct wowlan_key_gtk_type_iter gtk_type_data = { 1064 .kek_kck_cmd = _kek_kck_cmd, 1065 }; 1066 1067 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, 1068 WOWLAN_KEK_KCK_MATERIAL, 1069 IWL_FW_CMD_VER_UNKNOWN); 1070 if (WARN_ON(cmd_ver != 2 && cmd_ver != 3 && cmd_ver != 4 && 1071 cmd_ver != IWL_FW_CMD_VER_UNKNOWN)) 1072 return -EINVAL; 1073 1074 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_gtk_type_iter, 1075 >k_type_data); 1076 1077 memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck, 1078 mvmvif->rekey_data.kck_len); 1079 kek_kck_cmd.kck_len = cpu_to_le16(mvmvif->rekey_data.kck_len); 1080 memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek, 1081 mvmvif->rekey_data.kek_len); 1082 kek_kck_cmd.kek_len = cpu_to_le16(mvmvif->rekey_data.kek_len); 1083 kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr; 1084 kek_kck_cmd.akm = cpu_to_le32(mvmvif->rekey_data.akm); 1085 kek_kck_cmd.sta_id = cpu_to_le32(mvm_link->ap_sta_id); 1086 1087 if (cmd_ver == 4) { 1088 cmd_size = sizeof(struct iwl_wowlan_kek_kck_material_cmd_v4); 1089 } else { 1090 if (cmd_ver == 3) 1091 cmd_size = 1092 sizeof(struct iwl_wowlan_kek_kck_material_cmd_v3); 1093 else 1094 cmd_size = 1095 sizeof(struct iwl_wowlan_kek_kck_material_cmd_v2); 1096 /* skip the sta_id at the beginning */ 1097 _kek_kck_cmd = (void *) 1098 ((u8 *)_kek_kck_cmd + sizeof(kek_kck_cmd.sta_id)); 1099 } 1100 1101 IWL_DEBUG_WOWLAN(mvm, "setting akm %d\n", 1102 mvmvif->rekey_data.akm); 1103 1104 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_KEK_KCK_MATERIAL, 1105 CMD_ASYNC, cmd_size, _kek_kck_cmd); 1106 if (ret) 1107 return ret; 1108 } 1109 1110 return 0; 1111 } 1112 1113 static int 1114 iwl_mvm_wowlan_config(struct iwl_mvm *mvm, 1115 struct cfg80211_wowlan *wowlan, 1116 struct iwl_wowlan_config_cmd *wowlan_config_cmd, 1117 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif, 1118 struct iwl_mvm_vif_link_info *mvm_link, 1119 struct ieee80211_sta *ap_sta) 1120 { 1121 int ret; 1122 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 1123 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1124 1125 mvm->offload_tid = wowlan_config_cmd->offloading_tid; 1126 1127 if (!unified_image) { 1128 ret = iwl_mvm_switch_to_d3(mvm); 1129 if (ret) 1130 return ret; 1131 1132 ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta); 1133 if (ret) 1134 return ret; 1135 } 1136 1137 ret = iwl_mvm_wowlan_config_key_params(mvm, vif, mvm_link); 1138 if (ret) 1139 return ret; 1140 1141 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0, 1142 sizeof(*wowlan_config_cmd), 1143 wowlan_config_cmd); 1144 if (ret) 1145 return ret; 1146 1147 if (fw_has_api(&mvm->fw->ucode_capa, 1148 IWL_UCODE_TLV_API_WOWLAN_TCP_SYN_WAKE)) 1149 ret = iwl_mvm_send_patterns(mvm, mvm_link, wowlan); 1150 else 1151 ret = iwl_mvm_send_patterns_v1(mvm, wowlan); 1152 if (ret) 1153 return ret; 1154 1155 return iwl_mvm_send_proto_offload(mvm, vif, false, true, 0, 1156 mvm_link->ap_sta_id); 1157 } 1158 1159 static int 1160 iwl_mvm_netdetect_config(struct iwl_mvm *mvm, 1161 struct cfg80211_wowlan *wowlan, 1162 struct cfg80211_sched_scan_request *nd_config, 1163 struct ieee80211_vif *vif) 1164 { 1165 int ret; 1166 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 1167 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1168 1169 if (!unified_image) { 1170 ret = iwl_mvm_switch_to_d3(mvm); 1171 if (ret) 1172 return ret; 1173 } else { 1174 /* In theory, we wouldn't have to stop a running sched 1175 * scan in order to start another one (for 1176 * net-detect). But in practice this doesn't seem to 1177 * work properly, so stop any running sched_scan now. 1178 */ 1179 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 1180 if (ret) 1181 return ret; 1182 } 1183 1184 ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies, 1185 IWL_MVM_SCAN_NETDETECT); 1186 if (ret) 1187 return ret; 1188 1189 if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels)) 1190 return -EBUSY; 1191 1192 /* save the sched scan matchsets... */ 1193 if (nd_config->n_match_sets) { 1194 mvm->nd_match_sets = kmemdup(nd_config->match_sets, 1195 sizeof(*nd_config->match_sets) * 1196 nd_config->n_match_sets, 1197 GFP_KERNEL); 1198 if (mvm->nd_match_sets) 1199 mvm->n_nd_match_sets = nd_config->n_match_sets; 1200 } 1201 1202 /* ...and the sched scan channels for later reporting */ 1203 mvm->nd_channels = kmemdup(nd_config->channels, 1204 sizeof(*nd_config->channels) * 1205 nd_config->n_channels, 1206 GFP_KERNEL); 1207 if (mvm->nd_channels) 1208 mvm->n_nd_channels = nd_config->n_channels; 1209 1210 return 0; 1211 } 1212 1213 static void iwl_mvm_free_nd(struct iwl_mvm *mvm) 1214 { 1215 kfree(mvm->nd_match_sets); 1216 mvm->nd_match_sets = NULL; 1217 mvm->n_nd_match_sets = 0; 1218 kfree(mvm->nd_channels); 1219 mvm->nd_channels = NULL; 1220 mvm->n_nd_channels = 0; 1221 } 1222 1223 static int __iwl_mvm_suspend(struct ieee80211_hw *hw, 1224 struct cfg80211_wowlan *wowlan, 1225 bool test) 1226 { 1227 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1228 struct ieee80211_vif *vif = NULL; 1229 struct iwl_mvm_vif *mvmvif = NULL; 1230 struct ieee80211_sta *ap_sta = NULL; 1231 struct iwl_mvm_vif_link_info *mvm_link; 1232 struct iwl_d3_manager_config d3_cfg_cmd_data = { 1233 /* 1234 * Program the minimum sleep time to 10 seconds, as many 1235 * platforms have issues processing a wakeup signal while 1236 * still being in the process of suspending. 1237 */ 1238 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000), 1239 }; 1240 struct iwl_host_cmd d3_cfg_cmd = { 1241 .id = D3_CONFIG_CMD, 1242 .flags = CMD_WANT_SKB | CMD_SEND_IN_D3, 1243 .data[0] = &d3_cfg_cmd_data, 1244 .len[0] = sizeof(d3_cfg_cmd_data), 1245 }; 1246 int ret, primary_link; 1247 int len __maybe_unused; 1248 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 1249 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1250 1251 if (!wowlan) { 1252 /* 1253 * mac80211 shouldn't get here, but for D3 test 1254 * it doesn't warrant a warning 1255 */ 1256 WARN_ON(!test); 1257 return -EINVAL; 1258 } 1259 1260 vif = iwl_mvm_get_bss_vif(mvm); 1261 if (IS_ERR_OR_NULL(vif)) 1262 return 1; 1263 1264 if (hweight16(vif->active_links) > 1) { 1265 /* 1266 * Select the 'best' link. 1267 * May need to revisit, it seems better to not optimize 1268 * for throughput but rather range, reliability and 1269 * power here - and select 2.4 GHz ... 1270 */ 1271 primary_link = iwl_mvm_mld_get_primary_link(mvm, vif, 1272 vif->active_links); 1273 1274 if (WARN_ONCE(primary_link < 0, "no primary link in 0x%x\n", 1275 vif->active_links)) 1276 primary_link = __ffs(vif->active_links); 1277 1278 ret = ieee80211_set_active_links(vif, BIT(primary_link)); 1279 if (ret) 1280 return ret; 1281 } else if (vif->active_links) { 1282 primary_link = __ffs(vif->active_links); 1283 } else { 1284 primary_link = 0; 1285 } 1286 1287 mutex_lock(&mvm->mutex); 1288 1289 set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 1290 1291 synchronize_net(); 1292 1293 mvmvif = iwl_mvm_vif_from_mac80211(vif); 1294 1295 mvm_link = mvmvif->link[primary_link]; 1296 if (WARN_ON_ONCE(!mvm_link)) { 1297 ret = -EINVAL; 1298 goto out_noreset; 1299 } 1300 1301 if (mvm_link->ap_sta_id == IWL_MVM_INVALID_STA) { 1302 /* if we're not associated, this must be netdetect */ 1303 if (!wowlan->nd_config) { 1304 ret = 1; 1305 goto out_noreset; 1306 } 1307 1308 ret = iwl_mvm_netdetect_config( 1309 mvm, wowlan, wowlan->nd_config, vif); 1310 if (ret) 1311 goto out; 1312 1313 mvm->net_detect = true; 1314 } else { 1315 struct iwl_wowlan_config_cmd wowlan_config_cmd = { 1316 .offloading_tid = 0, 1317 }; 1318 1319 wowlan_config_cmd.sta_id = mvm_link->ap_sta_id; 1320 1321 ap_sta = rcu_dereference_protected( 1322 mvm->fw_id_to_mac_id[mvm_link->ap_sta_id], 1323 lockdep_is_held(&mvm->mutex)); 1324 if (IS_ERR_OR_NULL(ap_sta)) { 1325 ret = -EINVAL; 1326 goto out_noreset; 1327 } 1328 1329 ret = iwl_mvm_sta_ensure_queue( 1330 mvm, ap_sta->txq[wowlan_config_cmd.offloading_tid]); 1331 if (ret) 1332 goto out_noreset; 1333 1334 ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd, 1335 vif, mvmvif, ap_sta); 1336 if (ret) 1337 goto out_noreset; 1338 ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd, 1339 vif, mvmvif, mvm_link, ap_sta); 1340 if (ret) 1341 goto out; 1342 1343 mvm->net_detect = false; 1344 } 1345 1346 ret = iwl_mvm_power_update_device(mvm); 1347 if (ret) 1348 goto out; 1349 1350 ret = iwl_mvm_power_update_mac(mvm); 1351 if (ret) 1352 goto out; 1353 1354 #ifdef CONFIG_IWLWIFI_DEBUGFS 1355 if (mvm->d3_wake_sysassert) 1356 d3_cfg_cmd_data.wakeup_flags |= 1357 cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR); 1358 #endif 1359 1360 /* 1361 * Prior to 9000 device family the driver needs to stop the dbg 1362 * recording before entering D3. In later devices the FW stops the 1363 * recording automatically. 1364 */ 1365 if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_9000) 1366 iwl_fw_dbg_stop_restart_recording(&mvm->fwrt, NULL, true); 1367 1368 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_D3; 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 if (!unified_image) { 1391 if (mvm->fw_restart > 0) { 1392 mvm->fw_restart--; 1393 ieee80211_restart_hw(mvm->hw); 1394 } 1395 } 1396 1397 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 1398 } 1399 out_noreset: 1400 mutex_unlock(&mvm->mutex); 1401 1402 return ret; 1403 } 1404 1405 int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) 1406 { 1407 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1408 1409 iwl_mvm_pause_tcm(mvm, true); 1410 1411 iwl_fw_runtime_suspend(&mvm->fwrt); 1412 1413 return __iwl_mvm_suspend(hw, wowlan, false); 1414 } 1415 1416 struct iwl_multicast_key_data { 1417 u8 key[WOWLAN_KEY_MAX_SIZE]; 1418 u8 len; 1419 u8 flags; 1420 u8 id; 1421 u8 ipn[6]; 1422 }; 1423 1424 /* converted data from the different status responses */ 1425 struct iwl_wowlan_status_data { 1426 u64 replay_ctr; 1427 u32 num_of_gtk_rekeys; 1428 u32 received_beacons; 1429 u32 wakeup_reasons; 1430 u32 wake_packet_length; 1431 u32 wake_packet_bufsize; 1432 u16 pattern_number; 1433 u16 non_qos_seq_ctr; 1434 u16 qos_seq_ctr[8]; 1435 u8 tid_tear_down; 1436 1437 struct { 1438 /* including RX MIC key for TKIP */ 1439 u8 key[WOWLAN_KEY_MAX_SIZE]; 1440 u8 len; 1441 u8 flags; 1442 u8 id; 1443 } gtk[WOWLAN_GTK_KEYS_NUM]; 1444 1445 struct { 1446 /* 1447 * We store both the TKIP and AES representations 1448 * coming from the firmware because we decode the 1449 * data from there before we iterate the keys and 1450 * know which one we need. 1451 */ 1452 struct { 1453 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT]; 1454 } tkip, aes; 1455 1456 /* 1457 * We use -1 for when we have valid data but don't know 1458 * the key ID from firmware, and thus it needs to be 1459 * installed with the last key (depending on rekeying). 1460 */ 1461 s8 key_id; 1462 bool valid; 1463 } gtk_seq[2]; 1464 1465 struct { 1466 /* Same as above */ 1467 struct { 1468 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT]; 1469 u64 tx_pn; 1470 } tkip, aes; 1471 } ptk; 1472 1473 struct iwl_multicast_key_data igtk; 1474 struct iwl_multicast_key_data bigtk[WOWLAN_BIGTK_KEYS_NUM]; 1475 1476 int num_mlo_keys; 1477 struct iwl_wowlan_mlo_gtk mlo_keys[WOWLAN_MAX_MLO_KEYS]; 1478 1479 u8 *wake_packet; 1480 }; 1481 1482 static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm, 1483 struct ieee80211_vif *vif, 1484 struct iwl_wowlan_status_data *status) 1485 { 1486 struct sk_buff *pkt = NULL; 1487 struct cfg80211_wowlan_wakeup wakeup = { 1488 .pattern_idx = -1, 1489 }; 1490 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; 1491 u32 reasons = status->wakeup_reasons; 1492 1493 if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) { 1494 wakeup_report = NULL; 1495 goto report; 1496 } 1497 1498 pm_wakeup_event(mvm->dev, 0); 1499 1500 if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET) 1501 wakeup.magic_pkt = true; 1502 1503 if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN) 1504 wakeup.pattern_idx = 1505 status->pattern_number; 1506 1507 if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 1508 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH | 1509 IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)) 1510 wakeup.disconnect = true; 1511 1512 if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE) 1513 wakeup.gtk_rekey_failure = true; 1514 1515 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 1516 wakeup.rfkill_release = true; 1517 1518 if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST) 1519 wakeup.eap_identity_req = true; 1520 1521 if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE) 1522 wakeup.four_way_handshake = true; 1523 1524 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS) 1525 wakeup.tcp_connlost = true; 1526 1527 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE) 1528 wakeup.tcp_nomoretokens = true; 1529 1530 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET) 1531 wakeup.tcp_match = true; 1532 1533 if (reasons & IWL_WAKEUP_BY_11W_UNPROTECTED_DEAUTH_OR_DISASSOC) 1534 wakeup.unprot_deauth_disassoc = true; 1535 1536 if (status->wake_packet) { 1537 int pktsize = status->wake_packet_bufsize; 1538 int pktlen = status->wake_packet_length; 1539 const u8 *pktdata = status->wake_packet; 1540 const struct ieee80211_hdr *hdr = (const void *)pktdata; 1541 int truncated = pktlen - pktsize; 1542 1543 /* this would be a firmware bug */ 1544 if (WARN_ON_ONCE(truncated < 0)) 1545 truncated = 0; 1546 1547 if (ieee80211_is_data(hdr->frame_control)) { 1548 int hdrlen = ieee80211_hdrlen(hdr->frame_control); 1549 int ivlen = 0, icvlen = 4; /* also FCS */ 1550 1551 pkt = alloc_skb(pktsize, GFP_KERNEL); 1552 if (!pkt) 1553 goto report; 1554 1555 skb_put_data(pkt, pktdata, hdrlen); 1556 pktdata += hdrlen; 1557 pktsize -= hdrlen; 1558 1559 if (ieee80211_has_protected(hdr->frame_control)) { 1560 /* 1561 * This is unlocked and using gtk_i(c)vlen, 1562 * but since everything is under RTNL still 1563 * that's not really a problem - changing 1564 * it would be difficult. 1565 */ 1566 if (is_multicast_ether_addr(hdr->addr1)) { 1567 ivlen = mvm->gtk_ivlen; 1568 icvlen += mvm->gtk_icvlen; 1569 } else { 1570 ivlen = mvm->ptk_ivlen; 1571 icvlen += mvm->ptk_icvlen; 1572 } 1573 } 1574 1575 /* if truncated, FCS/ICV is (partially) gone */ 1576 if (truncated >= icvlen) { 1577 icvlen = 0; 1578 truncated -= icvlen; 1579 } else { 1580 icvlen -= truncated; 1581 truncated = 0; 1582 } 1583 1584 pktsize -= ivlen + icvlen; 1585 pktdata += ivlen; 1586 1587 skb_put_data(pkt, pktdata, pktsize); 1588 1589 if (ieee80211_data_to_8023(pkt, vif->addr, vif->type)) 1590 goto report; 1591 wakeup.packet = pkt->data; 1592 wakeup.packet_present_len = pkt->len; 1593 wakeup.packet_len = pkt->len - truncated; 1594 wakeup.packet_80211 = false; 1595 } else { 1596 int fcslen = 4; 1597 1598 if (truncated >= 4) { 1599 truncated -= 4; 1600 fcslen = 0; 1601 } else { 1602 fcslen -= truncated; 1603 truncated = 0; 1604 } 1605 pktsize -= fcslen; 1606 wakeup.packet = status->wake_packet; 1607 wakeup.packet_present_len = pktsize; 1608 wakeup.packet_len = pktlen - truncated; 1609 wakeup.packet_80211 = true; 1610 } 1611 } 1612 1613 report: 1614 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); 1615 kfree_skb(pkt); 1616 } 1617 1618 static void iwl_mvm_le64_to_aes_seq(__le64 le_pn, struct ieee80211_key_seq *seq) 1619 { 1620 u64 pn = le64_to_cpu(le_pn); 1621 1622 seq->ccmp.pn[0] = pn >> 40; 1623 seq->ccmp.pn[1] = pn >> 32; 1624 seq->ccmp.pn[2] = pn >> 24; 1625 seq->ccmp.pn[3] = pn >> 16; 1626 seq->ccmp.pn[4] = pn >> 8; 1627 seq->ccmp.pn[5] = pn; 1628 } 1629 1630 static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc, 1631 struct ieee80211_key_seq *seq) 1632 { 1633 iwl_mvm_le64_to_aes_seq(sc->pn, seq); 1634 } 1635 1636 static void iwl_mvm_le64_to_tkip_seq(__le64 le_pn, struct ieee80211_key_seq *seq) 1637 { 1638 u64 pn = le64_to_cpu(le_pn); 1639 1640 seq->tkip.iv16 = (u16)pn; 1641 seq->tkip.iv32 = (u32)(pn >> 16); 1642 } 1643 1644 static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc, 1645 struct ieee80211_key_seq *seq) 1646 { 1647 seq->tkip.iv32 = le32_to_cpu(sc->iv32); 1648 seq->tkip.iv16 = le16_to_cpu(sc->iv16); 1649 } 1650 1651 static void iwl_mvm_set_key_rx_seq_tids(struct ieee80211_key_conf *key, 1652 struct ieee80211_key_seq *seq) 1653 { 1654 int tid; 1655 1656 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) 1657 ieee80211_set_key_rx_seq(key, tid, &seq[tid]); 1658 } 1659 1660 static void iwl_mvm_set_aes_ptk_rx_seq(struct iwl_mvm *mvm, 1661 struct iwl_wowlan_status_data *status, 1662 struct ieee80211_sta *sta, 1663 struct ieee80211_key_conf *key) 1664 { 1665 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1666 struct iwl_mvm_key_pn *ptk_pn; 1667 int tid; 1668 1669 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.aes.seq); 1670 1671 if (!iwl_mvm_has_new_rx_api(mvm)) 1672 return; 1673 1674 1675 rcu_read_lock(); 1676 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]); 1677 if (WARN_ON(!ptk_pn)) { 1678 rcu_read_unlock(); 1679 return; 1680 } 1681 1682 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1683 int i; 1684 1685 for (i = 1; i < mvm->trans->num_rx_queues; i++) 1686 memcpy(ptk_pn->q[i].pn[tid], 1687 status->ptk.aes.seq[tid].ccmp.pn, 1688 IEEE80211_CCMP_PN_LEN); 1689 } 1690 rcu_read_unlock(); 1691 } 1692 1693 static void iwl_mvm_convert_key_counters(struct iwl_wowlan_status_data *status, 1694 union iwl_all_tsc_rsc *sc) 1695 { 1696 int i; 1697 1698 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT); 1699 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC); 1700 1701 /* GTK RX counters */ 1702 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1703 iwl_mvm_tkip_sc_to_seq(&sc->tkip.multicast_rsc[i], 1704 &status->gtk_seq[0].tkip.seq[i]); 1705 iwl_mvm_aes_sc_to_seq(&sc->aes.multicast_rsc[i], 1706 &status->gtk_seq[0].aes.seq[i]); 1707 } 1708 status->gtk_seq[0].valid = true; 1709 status->gtk_seq[0].key_id = -1; 1710 1711 /* PTK TX counter */ 1712 status->ptk.tkip.tx_pn = (u64)le16_to_cpu(sc->tkip.tsc.iv16) | 1713 ((u64)le32_to_cpu(sc->tkip.tsc.iv32) << 16); 1714 status->ptk.aes.tx_pn = le64_to_cpu(sc->aes.tsc.pn); 1715 1716 /* PTK RX counters */ 1717 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1718 iwl_mvm_tkip_sc_to_seq(&sc->tkip.unicast_rsc[i], 1719 &status->ptk.tkip.seq[i]); 1720 iwl_mvm_aes_sc_to_seq(&sc->aes.unicast_rsc[i], 1721 &status->ptk.aes.seq[i]); 1722 } 1723 } 1724 1725 static void 1726 iwl_mvm_convert_key_counters_v5_gtk_seq(struct iwl_wowlan_status_data *status, 1727 struct iwl_wowlan_all_rsc_tsc_v5 *sc, 1728 unsigned int idx, unsigned int key_id) 1729 { 1730 int tid; 1731 1732 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1733 iwl_mvm_le64_to_tkip_seq(sc->mcast_rsc[idx][tid], 1734 &status->gtk_seq[idx].tkip.seq[tid]); 1735 iwl_mvm_le64_to_aes_seq(sc->mcast_rsc[idx][tid], 1736 &status->gtk_seq[idx].aes.seq[tid]); 1737 } 1738 1739 status->gtk_seq[idx].valid = true; 1740 status->gtk_seq[idx].key_id = key_id; 1741 } 1742 1743 static void 1744 iwl_mvm_convert_key_counters_v5(struct iwl_wowlan_status_data *status, 1745 struct iwl_wowlan_all_rsc_tsc_v5 *sc) 1746 { 1747 int i, tid; 1748 1749 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT); 1750 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC); 1751 BUILD_BUG_ON(ARRAY_SIZE(sc->mcast_rsc) != ARRAY_SIZE(status->gtk_seq)); 1752 1753 /* GTK RX counters */ 1754 for (i = 0; i < ARRAY_SIZE(sc->mcast_key_id_map); i++) { 1755 u8 entry = sc->mcast_key_id_map[i]; 1756 1757 if (entry < ARRAY_SIZE(sc->mcast_rsc)) 1758 iwl_mvm_convert_key_counters_v5_gtk_seq(status, sc, 1759 entry, i); 1760 } 1761 1762 /* PTK TX counters not needed, assigned in device */ 1763 1764 /* PTK RX counters */ 1765 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1766 iwl_mvm_le64_to_tkip_seq(sc->ucast_rsc[tid], 1767 &status->ptk.tkip.seq[tid]); 1768 iwl_mvm_le64_to_aes_seq(sc->ucast_rsc[tid], 1769 &status->ptk.aes.seq[tid]); 1770 } 1771 } 1772 1773 static void iwl_mvm_set_key_rx_seq_idx(struct ieee80211_key_conf *key, 1774 struct iwl_wowlan_status_data *status, 1775 int idx) 1776 { 1777 switch (key->cipher) { 1778 case WLAN_CIPHER_SUITE_CCMP: 1779 case WLAN_CIPHER_SUITE_GCMP: 1780 case WLAN_CIPHER_SUITE_GCMP_256: 1781 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].aes.seq); 1782 break; 1783 case WLAN_CIPHER_SUITE_TKIP: 1784 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].tkip.seq); 1785 break; 1786 default: 1787 WARN_ON(1); 1788 } 1789 } 1790 1791 static void iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf *key, 1792 struct iwl_wowlan_status_data *status, 1793 bool installed) 1794 { 1795 int i; 1796 1797 for (i = 0; i < ARRAY_SIZE(status->gtk_seq); i++) { 1798 if (!status->gtk_seq[i].valid) 1799 continue; 1800 1801 /* Handle the case where we know the key ID */ 1802 if (status->gtk_seq[i].key_id == key->keyidx) { 1803 s8 new_key_id = -1; 1804 1805 if (status->num_of_gtk_rekeys) 1806 new_key_id = status->gtk[0].flags & 1807 IWL_WOWLAN_GTK_IDX_MASK; 1808 1809 /* Don't install a new key's value to an old key */ 1810 if (new_key_id != key->keyidx) 1811 iwl_mvm_set_key_rx_seq_idx(key, status, i); 1812 continue; 1813 } 1814 1815 /* handle the case where we didn't, last key only */ 1816 if (status->gtk_seq[i].key_id == -1 && 1817 (!status->num_of_gtk_rekeys || installed)) 1818 iwl_mvm_set_key_rx_seq_idx(key, status, i); 1819 } 1820 } 1821 1822 struct iwl_mvm_d3_gtk_iter_data { 1823 struct iwl_mvm *mvm; 1824 struct iwl_wowlan_status_data *status; 1825 u32 gtk_cipher, igtk_cipher, bigtk_cipher; 1826 bool unhandled_cipher, igtk_support, bigtk_support; 1827 int num_keys; 1828 }; 1829 1830 static void iwl_mvm_d3_find_last_keys(struct ieee80211_hw *hw, 1831 struct ieee80211_vif *vif, 1832 struct ieee80211_sta *sta, 1833 struct ieee80211_key_conf *key, 1834 void *_data) 1835 { 1836 struct iwl_mvm_d3_gtk_iter_data *data = _data; 1837 int link_id = vif->active_links ? __ffs(vif->active_links) : -1; 1838 1839 if (link_id >= 0 && key->link_id >= 0 && link_id != key->link_id) 1840 return; 1841 1842 if (data->unhandled_cipher) 1843 return; 1844 1845 switch (key->cipher) { 1846 case WLAN_CIPHER_SUITE_WEP40: 1847 case WLAN_CIPHER_SUITE_WEP104: 1848 /* ignore WEP completely, nothing to do */ 1849 return; 1850 case WLAN_CIPHER_SUITE_CCMP: 1851 case WLAN_CIPHER_SUITE_GCMP: 1852 case WLAN_CIPHER_SUITE_GCMP_256: 1853 case WLAN_CIPHER_SUITE_TKIP: 1854 /* we support these */ 1855 data->gtk_cipher = key->cipher; 1856 break; 1857 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 1858 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 1859 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 1860 case WLAN_CIPHER_SUITE_AES_CMAC: 1861 /* we support these */ 1862 if (data->igtk_support && 1863 (key->keyidx == 4 || key->keyidx == 5)) { 1864 data->igtk_cipher = key->cipher; 1865 } else if (data->bigtk_support && 1866 (key->keyidx == 6 || key->keyidx == 7)) { 1867 data->bigtk_cipher = key->cipher; 1868 } else { 1869 data->unhandled_cipher = true; 1870 return; 1871 } 1872 break; 1873 default: 1874 /* everything else - disconnect from AP */ 1875 data->unhandled_cipher = true; 1876 return; 1877 } 1878 1879 data->num_keys++; 1880 } 1881 1882 static void 1883 iwl_mvm_d3_set_igtk_bigtk_ipn(const struct iwl_multicast_key_data *key, 1884 struct ieee80211_key_seq *seq, u32 cipher) 1885 { 1886 switch (cipher) { 1887 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 1888 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 1889 BUILD_BUG_ON(sizeof(seq->aes_gmac.pn) != sizeof(key->ipn)); 1890 memcpy(seq->aes_gmac.pn, key->ipn, sizeof(seq->aes_gmac.pn)); 1891 break; 1892 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 1893 case WLAN_CIPHER_SUITE_AES_CMAC: 1894 BUILD_BUG_ON(sizeof(seq->aes_cmac.pn) != sizeof(key->ipn)); 1895 memcpy(seq->aes_cmac.pn, key->ipn, sizeof(seq->aes_cmac.pn)); 1896 break; 1897 default: 1898 WARN_ON(1); 1899 } 1900 } 1901 1902 static void 1903 iwl_mvm_d3_update_igtk_bigtk(struct iwl_wowlan_status_data *status, 1904 struct ieee80211_key_conf *key, 1905 struct iwl_multicast_key_data *key_data) 1906 { 1907 if (status->num_of_gtk_rekeys && key_data->len) { 1908 /* remove rekeyed key */ 1909 ieee80211_remove_key(key); 1910 } else { 1911 struct ieee80211_key_seq seq; 1912 1913 iwl_mvm_d3_set_igtk_bigtk_ipn(key_data, 1914 &seq, 1915 key->cipher); 1916 ieee80211_set_key_rx_seq(key, 0, &seq); 1917 } 1918 } 1919 1920 static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw, 1921 struct ieee80211_vif *vif, 1922 struct ieee80211_sta *sta, 1923 struct ieee80211_key_conf *key, 1924 void *_data) 1925 { 1926 struct iwl_mvm_d3_gtk_iter_data *data = _data; 1927 struct iwl_wowlan_status_data *status = data->status; 1928 s8 keyidx; 1929 int link_id = vif->active_links ? __ffs(vif->active_links) : -1; 1930 1931 if (link_id >= 0 && key->link_id >= 0 && link_id != key->link_id) 1932 return; 1933 1934 if (data->unhandled_cipher) 1935 return; 1936 1937 switch (key->cipher) { 1938 case WLAN_CIPHER_SUITE_WEP40: 1939 case WLAN_CIPHER_SUITE_WEP104: 1940 /* ignore WEP completely, nothing to do */ 1941 return; 1942 case WLAN_CIPHER_SUITE_CCMP: 1943 case WLAN_CIPHER_SUITE_GCMP: 1944 case WLAN_CIPHER_SUITE_GCMP_256: 1945 if (sta) { 1946 atomic64_set(&key->tx_pn, status->ptk.aes.tx_pn); 1947 iwl_mvm_set_aes_ptk_rx_seq(data->mvm, status, sta, key); 1948 return; 1949 } 1950 fallthrough; 1951 case WLAN_CIPHER_SUITE_TKIP: 1952 if (sta) { 1953 atomic64_set(&key->tx_pn, status->ptk.tkip.tx_pn); 1954 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.tkip.seq); 1955 return; 1956 } 1957 keyidx = key->keyidx; 1958 /* The current key is always sent by the FW, even if it wasn't 1959 * rekeyed during D3. 1960 * We remove an existing key if it has the same index as 1961 * a new key 1962 */ 1963 if (status->num_of_gtk_rekeys && 1964 ((status->gtk[0].len && keyidx == status->gtk[0].id) || 1965 (status->gtk[1].len && keyidx == status->gtk[1].id))) { 1966 ieee80211_remove_key(key); 1967 } else { 1968 iwl_mvm_set_key_rx_seq(key, data->status, false); 1969 } 1970 break; 1971 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 1972 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 1973 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 1974 case WLAN_CIPHER_SUITE_AES_CMAC: 1975 if (key->keyidx == 4 || key->keyidx == 5) { 1976 iwl_mvm_d3_update_igtk_bigtk(status, key, 1977 &status->igtk); 1978 } 1979 if (key->keyidx == 6 || key->keyidx == 7) { 1980 u8 idx = key->keyidx == status->bigtk[1].id; 1981 1982 iwl_mvm_d3_update_igtk_bigtk(status, key, 1983 &status->bigtk[idx]); 1984 } 1985 } 1986 } 1987 1988 struct iwl_mvm_d3_mlo_old_keys { 1989 u32 cipher[IEEE80211_MLD_MAX_NUM_LINKS][WOWLAN_MLO_GTK_KEY_NUM_TYPES]; 1990 struct ieee80211_key_conf *key[IEEE80211_MLD_MAX_NUM_LINKS][8]; 1991 }; 1992 1993 static void iwl_mvm_mlo_key_ciphers(struct ieee80211_hw *hw, 1994 struct ieee80211_vif *vif, 1995 struct ieee80211_sta *sta, 1996 struct ieee80211_key_conf *key, 1997 void *data) 1998 { 1999 struct iwl_mvm_d3_mlo_old_keys *old_keys = data; 2000 enum iwl_wowlan_mlo_gtk_type key_type; 2001 2002 if (key->link_id < 0) 2003 return; 2004 2005 if (WARN_ON(key->link_id >= IEEE80211_MLD_MAX_NUM_LINKS || 2006 key->keyidx >= 8)) 2007 return; 2008 2009 if (WARN_ON(old_keys->key[key->link_id][key->keyidx])) 2010 return; 2011 2012 switch (key->cipher) { 2013 case WLAN_CIPHER_SUITE_CCMP: 2014 case WLAN_CIPHER_SUITE_GCMP: 2015 case WLAN_CIPHER_SUITE_GCMP_256: 2016 key_type = WOWLAN_MLO_GTK_KEY_TYPE_GTK; 2017 break; 2018 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 2019 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 2020 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 2021 case WLAN_CIPHER_SUITE_AES_CMAC: 2022 if (key->keyidx == 4 || key->keyidx == 5) { 2023 key_type = WOWLAN_MLO_GTK_KEY_TYPE_IGTK; 2024 break; 2025 } else if (key->keyidx == 6 || key->keyidx == 7) { 2026 key_type = WOWLAN_MLO_GTK_KEY_TYPE_BIGTK; 2027 break; 2028 } 2029 return; 2030 default: 2031 /* ignore WEP/TKIP or unknown ciphers */ 2032 return; 2033 } 2034 2035 old_keys->cipher[key->link_id][key_type] = key->cipher; 2036 old_keys->key[key->link_id][key->keyidx] = key; 2037 } 2038 2039 static bool iwl_mvm_mlo_gtk_rekey(struct iwl_wowlan_status_data *status, 2040 struct ieee80211_vif *vif, 2041 struct iwl_mvm *mvm) 2042 { 2043 int i; 2044 struct iwl_mvm_d3_mlo_old_keys *old_keys; 2045 bool ret = true; 2046 2047 IWL_DEBUG_WOWLAN(mvm, "Num of MLO Keys: %d\n", status->num_mlo_keys); 2048 if (!status->num_mlo_keys) 2049 return true; 2050 2051 old_keys = kzalloc(sizeof(*old_keys), GFP_KERNEL); 2052 if (!old_keys) 2053 return false; 2054 2055 /* find the cipher for each mlo key */ 2056 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_mlo_key_ciphers, old_keys); 2057 2058 for (i = 0; i < status->num_mlo_keys; i++) { 2059 struct iwl_wowlan_mlo_gtk *mlo_key = &status->mlo_keys[i]; 2060 struct ieee80211_key_conf *key, *old_key; 2061 struct ieee80211_key_seq seq; 2062 struct { 2063 struct ieee80211_key_conf conf; 2064 u8 key[32]; 2065 } conf = {}; 2066 u16 flags = le16_to_cpu(mlo_key->flags); 2067 int j, link_id, key_id, key_type; 2068 2069 link_id = u16_get_bits(flags, WOWLAN_MLO_GTK_FLAG_LINK_ID_MSK); 2070 key_id = u16_get_bits(flags, WOWLAN_MLO_GTK_FLAG_KEY_ID_MSK); 2071 key_type = u16_get_bits(flags, 2072 WOWLAN_MLO_GTK_FLAG_KEY_TYPE_MSK); 2073 2074 if (!(vif->valid_links & BIT(link_id))) 2075 continue; 2076 2077 if (WARN_ON(link_id >= IEEE80211_MLD_MAX_NUM_LINKS || 2078 key_id >= 8 || 2079 key_type >= WOWLAN_MLO_GTK_KEY_NUM_TYPES)) 2080 continue; 2081 2082 conf.conf.cipher = old_keys->cipher[link_id][key_type]; 2083 /* WARN_ON? */ 2084 if (!conf.conf.cipher) 2085 continue; 2086 2087 conf.conf.keylen = 0; 2088 switch (conf.conf.cipher) { 2089 case WLAN_CIPHER_SUITE_CCMP: 2090 case WLAN_CIPHER_SUITE_GCMP: 2091 conf.conf.keylen = WLAN_KEY_LEN_CCMP; 2092 break; 2093 case WLAN_CIPHER_SUITE_GCMP_256: 2094 conf.conf.keylen = WLAN_KEY_LEN_GCMP_256; 2095 break; 2096 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 2097 conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_128; 2098 break; 2099 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 2100 conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_256; 2101 break; 2102 case WLAN_CIPHER_SUITE_AES_CMAC: 2103 conf.conf.keylen = WLAN_KEY_LEN_AES_CMAC; 2104 break; 2105 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 2106 conf.conf.keylen = WLAN_KEY_LEN_BIP_CMAC_256; 2107 break; 2108 } 2109 2110 if (WARN_ON(!conf.conf.keylen || 2111 conf.conf.keylen > sizeof(conf.key))) 2112 continue; 2113 2114 memcpy(conf.conf.key, mlo_key->key, conf.conf.keylen); 2115 conf.conf.keyidx = key_id; 2116 2117 old_key = old_keys->key[link_id][key_id]; 2118 if (old_key) { 2119 IWL_DEBUG_WOWLAN(mvm, 2120 "Remove MLO key id %d, link id %d\n", 2121 key_id, link_id); 2122 ieee80211_remove_key(old_key); 2123 } 2124 2125 IWL_DEBUG_WOWLAN(mvm, "Add MLO key id %d, link id %d\n", 2126 key_id, link_id); 2127 key = ieee80211_gtk_rekey_add(vif, &conf.conf, link_id); 2128 if (WARN_ON(IS_ERR(key))) { 2129 ret = false; 2130 goto out; 2131 } 2132 2133 /* 2134 * mac80211 expects the pn in big-endian 2135 * also note that seq is a union of all cipher types 2136 * (ccmp, gcmp, cmac, gmac), and they all have the same 2137 * pn field (of length 6) so just copy it to ccmp.pn. 2138 */ 2139 for (j = 5; j >= 0; j--) 2140 seq.ccmp.pn[5 - j] = mlo_key->pn[j]; 2141 2142 /* group keys are non-QoS and use TID 0 */ 2143 ieee80211_set_key_rx_seq(key, 0, &seq); 2144 } 2145 2146 out: 2147 kfree(old_keys); 2148 return ret; 2149 } 2150 2151 static bool iwl_mvm_gtk_rekey(struct iwl_wowlan_status_data *status, 2152 struct ieee80211_vif *vif, 2153 struct iwl_mvm *mvm, u32 gtk_cipher) 2154 { 2155 int i, j; 2156 struct ieee80211_key_conf *key; 2157 struct { 2158 struct ieee80211_key_conf conf; 2159 u8 key[32]; 2160 } conf = { 2161 .conf.cipher = gtk_cipher, 2162 }; 2163 int link_id = vif->active_links ? __ffs(vif->active_links) : -1; 2164 2165 BUILD_BUG_ON(WLAN_KEY_LEN_CCMP != WLAN_KEY_LEN_GCMP); 2166 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_CCMP); 2167 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_GCMP_256); 2168 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_TKIP); 2169 BUILD_BUG_ON(sizeof(conf.key) < sizeof(status->gtk[0].key)); 2170 2171 switch (gtk_cipher) { 2172 case WLAN_CIPHER_SUITE_CCMP: 2173 case WLAN_CIPHER_SUITE_GCMP: 2174 conf.conf.keylen = WLAN_KEY_LEN_CCMP; 2175 break; 2176 case WLAN_CIPHER_SUITE_GCMP_256: 2177 conf.conf.keylen = WLAN_KEY_LEN_GCMP_256; 2178 break; 2179 case WLAN_CIPHER_SUITE_TKIP: 2180 conf.conf.keylen = WLAN_KEY_LEN_TKIP; 2181 break; 2182 default: 2183 WARN_ON(1); 2184 } 2185 2186 for (i = 0; i < ARRAY_SIZE(status->gtk); i++) { 2187 if (!status->gtk[i].len) 2188 continue; 2189 2190 conf.conf.keyidx = status->gtk[i].id; 2191 IWL_DEBUG_WOWLAN(mvm, 2192 "Received from FW GTK cipher %d, key index %d\n", 2193 conf.conf.cipher, conf.conf.keyidx); 2194 memcpy(conf.conf.key, status->gtk[i].key, 2195 sizeof(status->gtk[i].key)); 2196 2197 key = ieee80211_gtk_rekey_add(vif, &conf.conf, link_id); 2198 if (IS_ERR(key)) 2199 return false; 2200 2201 for (j = 0; j < ARRAY_SIZE(status->gtk_seq); j++) { 2202 if (!status->gtk_seq[j].valid || 2203 status->gtk_seq[j].key_id != key->keyidx) 2204 continue; 2205 iwl_mvm_set_key_rx_seq_idx(key, status, j); 2206 break; 2207 } 2208 WARN_ON(j == ARRAY_SIZE(status->gtk_seq)); 2209 } 2210 2211 return true; 2212 } 2213 2214 static bool 2215 iwl_mvm_d3_igtk_bigtk_rekey_add(struct iwl_wowlan_status_data *status, 2216 struct ieee80211_vif *vif, u32 cipher, 2217 struct iwl_multicast_key_data *key_data) 2218 { 2219 struct ieee80211_key_conf *key_config; 2220 struct { 2221 struct ieee80211_key_conf conf; 2222 u8 key[WOWLAN_KEY_MAX_SIZE]; 2223 } conf = { 2224 .conf.cipher = cipher, 2225 .conf.keyidx = key_data->id, 2226 }; 2227 struct ieee80211_key_seq seq; 2228 int link_id = vif->active_links ? __ffs(vif->active_links) : -1; 2229 2230 if (!key_data->len) 2231 return true; 2232 2233 iwl_mvm_d3_set_igtk_bigtk_ipn(key_data, &seq, conf.conf.cipher); 2234 2235 switch (cipher) { 2236 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 2237 conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_128; 2238 break; 2239 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 2240 conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_256; 2241 break; 2242 case WLAN_CIPHER_SUITE_AES_CMAC: 2243 conf.conf.keylen = WLAN_KEY_LEN_AES_CMAC; 2244 break; 2245 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 2246 conf.conf.keylen = WLAN_KEY_LEN_BIP_CMAC_256; 2247 break; 2248 default: 2249 WARN_ON(1); 2250 } 2251 BUILD_BUG_ON(sizeof(conf.key) < sizeof(key_data->key)); 2252 memcpy(conf.conf.key, key_data->key, conf.conf.keylen); 2253 2254 key_config = ieee80211_gtk_rekey_add(vif, &conf.conf, link_id); 2255 if (IS_ERR(key_config)) 2256 return false; 2257 ieee80211_set_key_rx_seq(key_config, 0, &seq); 2258 2259 if (key_config->keyidx == 4 || key_config->keyidx == 5) { 2260 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2261 struct iwl_mvm_vif_link_info *mvm_link; 2262 2263 link_id = link_id < 0 ? 0 : link_id; 2264 mvm_link = mvmvif->link[link_id]; 2265 mvm_link->igtk = key_config; 2266 } 2267 2268 return true; 2269 } 2270 2271 static int iwl_mvm_lookup_wowlan_status_ver(struct iwl_mvm *mvm) 2272 { 2273 u8 notif_ver; 2274 2275 if (!fw_has_api(&mvm->fw->ucode_capa, 2276 IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL)) 2277 return 6; 2278 2279 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */ 2280 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP, 2281 WOWLAN_GET_STATUSES, 0); 2282 if (!notif_ver) 2283 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, 2284 WOWLAN_GET_STATUSES, 7); 2285 2286 return notif_ver; 2287 } 2288 2289 static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm, 2290 struct ieee80211_vif *vif, 2291 struct iwl_wowlan_status_data *status) 2292 { 2293 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2294 struct iwl_mvm_d3_gtk_iter_data gtkdata = { 2295 .mvm = mvm, 2296 .status = status, 2297 }; 2298 int i; 2299 u32 disconnection_reasons = 2300 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 2301 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH; 2302 2303 if (!status || !vif->bss_conf.bssid) 2304 return false; 2305 2306 if (iwl_mvm_lookup_wowlan_status_ver(mvm) > 6 || 2307 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2308 WOWLAN_INFO_NOTIFICATION, 2309 0)) 2310 gtkdata.igtk_support = true; 2311 2312 if (iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2313 WOWLAN_INFO_NOTIFICATION, 2314 0) >= 3) 2315 gtkdata.bigtk_support = true; 2316 2317 /* find last GTK that we used initially, if any */ 2318 ieee80211_iter_keys(mvm->hw, vif, 2319 iwl_mvm_d3_find_last_keys, >kdata); 2320 /* not trying to keep connections with MFP/unhandled ciphers */ 2321 if (gtkdata.unhandled_cipher) 2322 return false; 2323 if (!gtkdata.num_keys) 2324 goto out; 2325 2326 /* 2327 * invalidate all other GTKs that might still exist and update 2328 * the one that we used 2329 */ 2330 ieee80211_iter_keys(mvm->hw, vif, 2331 iwl_mvm_d3_update_keys, >kdata); 2332 2333 if (status->num_of_gtk_rekeys) { 2334 __be64 replay_ctr = cpu_to_be64(status->replay_ctr); 2335 2336 IWL_DEBUG_WOWLAN(mvm, "num of GTK rekeying %d\n", 2337 status->num_of_gtk_rekeys); 2338 2339 if (!iwl_mvm_gtk_rekey(status, vif, mvm, gtkdata.gtk_cipher)) 2340 return false; 2341 2342 if (!iwl_mvm_d3_igtk_bigtk_rekey_add(status, vif, 2343 gtkdata.igtk_cipher, 2344 &status->igtk)) 2345 return false; 2346 2347 for (i = 0; i < ARRAY_SIZE(status->bigtk); i++) { 2348 if (!iwl_mvm_d3_igtk_bigtk_rekey_add(status, vif, 2349 gtkdata.bigtk_cipher, 2350 &status->bigtk[i])) 2351 return false; 2352 } 2353 2354 if (!iwl_mvm_mlo_gtk_rekey(status, vif, mvm)) 2355 return false; 2356 2357 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid, 2358 (void *)&replay_ctr, GFP_KERNEL); 2359 } 2360 2361 out: 2362 if (iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP, 2363 WOWLAN_GET_STATUSES, 0) < 10) { 2364 mvmvif->seqno_valid = true; 2365 /* +0x10 because the set API expects next-to-use, not last-used */ 2366 mvmvif->seqno = status->non_qos_seq_ctr + 0x10; 2367 } 2368 2369 if (status->wakeup_reasons & disconnection_reasons) 2370 return false; 2371 2372 return true; 2373 } 2374 2375 static void iwl_mvm_convert_gtk_v2(struct iwl_wowlan_status_data *status, 2376 struct iwl_wowlan_gtk_status_v2 *data) 2377 { 2378 BUILD_BUG_ON(sizeof(status->gtk[0].key) < sizeof(data->key)); 2379 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY + 2380 sizeof(data->tkip_mic_key) > 2381 sizeof(status->gtk[0].key)); 2382 2383 status->gtk[0].len = data->key_len; 2384 status->gtk[0].flags = data->key_flags; 2385 2386 memcpy(status->gtk[0].key, data->key, sizeof(data->key)); 2387 2388 /* if it's as long as the TKIP encryption key, copy MIC key */ 2389 if (status->gtk[0].len == NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY) 2390 memcpy(status->gtk[0].key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 2391 data->tkip_mic_key, sizeof(data->tkip_mic_key)); 2392 } 2393 2394 static void iwl_mvm_convert_gtk_v3(struct iwl_wowlan_status_data *status, 2395 struct iwl_wowlan_gtk_status_v3 *data) 2396 { 2397 int data_idx, status_idx = 0; 2398 2399 BUILD_BUG_ON(sizeof(status->gtk[0].key) < sizeof(data[0].key)); 2400 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY + 2401 sizeof(data[0].tkip_mic_key) > 2402 sizeof(status->gtk[0].key)); 2403 BUILD_BUG_ON(ARRAY_SIZE(status->gtk) < WOWLAN_GTK_KEYS_NUM); 2404 for (data_idx = 0; data_idx < ARRAY_SIZE(status->gtk); data_idx++) { 2405 if (!(data[data_idx].key_len)) 2406 continue; 2407 status->gtk[status_idx].len = data[data_idx].key_len; 2408 status->gtk[status_idx].flags = data[data_idx].key_flags; 2409 status->gtk[status_idx].id = status->gtk[status_idx].flags & 2410 IWL_WOWLAN_GTK_IDX_MASK; 2411 2412 memcpy(status->gtk[status_idx].key, data[data_idx].key, 2413 sizeof(data[data_idx].key)); 2414 2415 /* if it's as long as the TKIP encryption key, copy MIC key */ 2416 if (status->gtk[status_idx].len == 2417 NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY) 2418 memcpy(status->gtk[status_idx].key + 2419 NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 2420 data[data_idx].tkip_mic_key, 2421 sizeof(data[data_idx].tkip_mic_key)); 2422 status_idx++; 2423 } 2424 } 2425 2426 static void iwl_mvm_convert_igtk(struct iwl_wowlan_status_data *status, 2427 struct iwl_wowlan_igtk_status *data) 2428 { 2429 int i; 2430 2431 BUILD_BUG_ON(sizeof(status->igtk.key) < sizeof(data->key)); 2432 BUILD_BUG_ON(sizeof(status->igtk.ipn) != sizeof(data->ipn)); 2433 2434 if (!data->key_len) 2435 return; 2436 2437 status->igtk.len = data->key_len; 2438 status->igtk.flags = data->key_flags; 2439 status->igtk.id = u32_get_bits(data->key_flags, 2440 IWL_WOWLAN_IGTK_BIGTK_IDX_MASK) 2441 + WOWLAN_IGTK_MIN_INDEX; 2442 2443 memcpy(status->igtk.key, data->key, sizeof(data->key)); 2444 2445 /* mac80211 expects big endian for memcmp() to work, convert */ 2446 for (i = 0; i < sizeof(data->ipn); i++) 2447 status->igtk.ipn[i] = data->ipn[sizeof(data->ipn) - i - 1]; 2448 } 2449 2450 static void iwl_mvm_convert_bigtk(struct iwl_wowlan_status_data *status, 2451 const struct iwl_wowlan_igtk_status *data) 2452 { 2453 int data_idx, status_idx = 0; 2454 2455 BUILD_BUG_ON(ARRAY_SIZE(status->bigtk) < WOWLAN_BIGTK_KEYS_NUM); 2456 2457 for (data_idx = 0; data_idx < WOWLAN_BIGTK_KEYS_NUM; data_idx++) { 2458 if (!data[data_idx].key_len) 2459 continue; 2460 2461 status->bigtk[status_idx].len = data[data_idx].key_len; 2462 status->bigtk[status_idx].flags = data[data_idx].key_flags; 2463 status->bigtk[status_idx].id = 2464 u32_get_bits(data[data_idx].key_flags, 2465 IWL_WOWLAN_IGTK_BIGTK_IDX_MASK) 2466 + WOWLAN_BIGTK_MIN_INDEX; 2467 2468 BUILD_BUG_ON(sizeof(status->bigtk[status_idx].key) < 2469 sizeof(data[data_idx].key)); 2470 BUILD_BUG_ON(sizeof(status->bigtk[status_idx].ipn) < 2471 sizeof(data[data_idx].ipn)); 2472 2473 memcpy(status->bigtk[status_idx].key, data[data_idx].key, 2474 sizeof(data[data_idx].key)); 2475 memcpy(status->bigtk[status_idx].ipn, data[data_idx].ipn, 2476 sizeof(data[data_idx].ipn)); 2477 status_idx++; 2478 } 2479 } 2480 2481 static void iwl_mvm_parse_wowlan_info_notif(struct iwl_mvm *mvm, 2482 struct iwl_wowlan_info_notif *data, 2483 struct iwl_wowlan_status_data *status, 2484 u32 len, bool has_mlo_keys) 2485 { 2486 u32 i; 2487 u32 expected_len = sizeof(*data); 2488 2489 if (!data) { 2490 IWL_ERR(mvm, "iwl_wowlan_info_notif data is NULL\n"); 2491 status = NULL; 2492 return; 2493 } 2494 2495 if (has_mlo_keys) 2496 expected_len += (data->num_mlo_link_keys * 2497 sizeof(status->mlo_keys[0])); 2498 2499 if (len < expected_len) { 2500 IWL_ERR(mvm, "Invalid WoWLAN info notification!\n"); 2501 status = NULL; 2502 return; 2503 } 2504 2505 iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc); 2506 iwl_mvm_convert_gtk_v3(status, data->gtk); 2507 iwl_mvm_convert_igtk(status, &data->igtk[0]); 2508 iwl_mvm_convert_bigtk(status, data->bigtk); 2509 status->replay_ctr = le64_to_cpu(data->replay_ctr); 2510 status->pattern_number = le16_to_cpu(data->pattern_number); 2511 for (i = 0; i < IWL_MAX_TID_COUNT; i++) 2512 status->qos_seq_ctr[i] = 2513 le16_to_cpu(data->qos_seq_ctr[i]); 2514 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); 2515 status->num_of_gtk_rekeys = 2516 le32_to_cpu(data->num_of_gtk_rekeys); 2517 status->received_beacons = le32_to_cpu(data->received_beacons); 2518 status->tid_tear_down = data->tid_tear_down; 2519 2520 if (has_mlo_keys && data->num_mlo_link_keys) { 2521 status->num_mlo_keys = data->num_mlo_link_keys; 2522 if (IWL_FW_CHECK(mvm, 2523 status->num_mlo_keys > WOWLAN_MAX_MLO_KEYS, 2524 "Too many mlo keys: %d, max %d\n", 2525 status->num_mlo_keys, WOWLAN_MAX_MLO_KEYS)) 2526 status->num_mlo_keys = WOWLAN_MAX_MLO_KEYS; 2527 memcpy(status->mlo_keys, data->mlo_gtks, 2528 status->num_mlo_keys * sizeof(status->mlo_keys[0])); 2529 } 2530 } 2531 2532 static void 2533 iwl_mvm_parse_wowlan_info_notif_v2(struct iwl_mvm *mvm, 2534 struct iwl_wowlan_info_notif_v2 *data, 2535 struct iwl_wowlan_status_data *status, 2536 u32 len) 2537 { 2538 u32 i; 2539 2540 if (!data) { 2541 IWL_ERR(mvm, "iwl_wowlan_info_notif data is NULL\n"); 2542 status = NULL; 2543 return; 2544 } 2545 2546 if (len < sizeof(*data)) { 2547 IWL_ERR(mvm, "Invalid WoWLAN info notification!\n"); 2548 status = NULL; 2549 return; 2550 } 2551 2552 iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc); 2553 iwl_mvm_convert_gtk_v3(status, data->gtk); 2554 iwl_mvm_convert_igtk(status, &data->igtk[0]); 2555 status->replay_ctr = le64_to_cpu(data->replay_ctr); 2556 status->pattern_number = le16_to_cpu(data->pattern_number); 2557 for (i = 0; i < IWL_MAX_TID_COUNT; i++) 2558 status->qos_seq_ctr[i] = 2559 le16_to_cpu(data->qos_seq_ctr[i]); 2560 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); 2561 status->num_of_gtk_rekeys = 2562 le32_to_cpu(data->num_of_gtk_rekeys); 2563 status->received_beacons = le32_to_cpu(data->received_beacons); 2564 status->tid_tear_down = data->tid_tear_down; 2565 } 2566 2567 /* Occasionally, templates would be nice. This is one of those times ... */ 2568 #define iwl_mvm_parse_wowlan_status_common(_ver) \ 2569 static struct iwl_wowlan_status_data * \ 2570 iwl_mvm_parse_wowlan_status_common_ ## _ver(struct iwl_mvm *mvm, \ 2571 struct iwl_wowlan_status_ ##_ver *data,\ 2572 int len) \ 2573 { \ 2574 struct iwl_wowlan_status_data *status; \ 2575 int data_size, i; \ 2576 \ 2577 if (len < sizeof(*data)) { \ 2578 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \ 2579 return NULL; \ 2580 } \ 2581 \ 2582 data_size = ALIGN(le32_to_cpu(data->wake_packet_bufsize), 4); \ 2583 if (len != sizeof(*data) + data_size) { \ 2584 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \ 2585 return NULL; \ 2586 } \ 2587 \ 2588 status = kzalloc(sizeof(*status), GFP_KERNEL); \ 2589 if (!status) \ 2590 return NULL; \ 2591 \ 2592 /* copy all the common fields */ \ 2593 status->replay_ctr = le64_to_cpu(data->replay_ctr); \ 2594 status->pattern_number = le16_to_cpu(data->pattern_number); \ 2595 status->non_qos_seq_ctr = le16_to_cpu(data->non_qos_seq_ctr); \ 2596 for (i = 0; i < 8; i++) \ 2597 status->qos_seq_ctr[i] = \ 2598 le16_to_cpu(data->qos_seq_ctr[i]); \ 2599 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); \ 2600 status->num_of_gtk_rekeys = \ 2601 le32_to_cpu(data->num_of_gtk_rekeys); \ 2602 status->received_beacons = le32_to_cpu(data->received_beacons); \ 2603 status->wake_packet_length = \ 2604 le32_to_cpu(data->wake_packet_length); \ 2605 status->wake_packet_bufsize = \ 2606 le32_to_cpu(data->wake_packet_bufsize); \ 2607 if (status->wake_packet_bufsize) { \ 2608 status->wake_packet = \ 2609 kmemdup(data->wake_packet, \ 2610 status->wake_packet_bufsize, \ 2611 GFP_KERNEL); \ 2612 if (!status->wake_packet) { \ 2613 kfree(status); \ 2614 return NULL; \ 2615 } \ 2616 } else { \ 2617 status->wake_packet = NULL; \ 2618 } \ 2619 \ 2620 return status; \ 2621 } 2622 2623 iwl_mvm_parse_wowlan_status_common(v6) 2624 iwl_mvm_parse_wowlan_status_common(v7) 2625 iwl_mvm_parse_wowlan_status_common(v9) 2626 iwl_mvm_parse_wowlan_status_common(v12) 2627 2628 static struct iwl_wowlan_status_data * 2629 iwl_mvm_send_wowlan_get_status(struct iwl_mvm *mvm, u8 sta_id) 2630 { 2631 struct iwl_wowlan_status_data *status; 2632 struct iwl_wowlan_get_status_cmd get_status_cmd = { 2633 .sta_id = cpu_to_le32(sta_id), 2634 }; 2635 struct iwl_host_cmd cmd = { 2636 .id = WOWLAN_GET_STATUSES, 2637 .flags = CMD_WANT_SKB, 2638 .data = { &get_status_cmd, }, 2639 .len = { sizeof(get_status_cmd), }, 2640 }; 2641 int ret, len; 2642 u8 notif_ver; 2643 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id, 2644 IWL_FW_CMD_VER_UNKNOWN); 2645 2646 if (cmd_ver == IWL_FW_CMD_VER_UNKNOWN) 2647 cmd.len[0] = 0; 2648 2649 lockdep_assert_held(&mvm->mutex); 2650 2651 ret = iwl_mvm_send_cmd(mvm, &cmd); 2652 if (ret) { 2653 IWL_ERR(mvm, "failed to query wakeup status (%d)\n", ret); 2654 return ERR_PTR(ret); 2655 } 2656 2657 len = iwl_rx_packet_payload_len(cmd.resp_pkt); 2658 2659 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */ 2660 notif_ver = iwl_mvm_lookup_wowlan_status_ver(mvm); 2661 2662 if (notif_ver < 7) { 2663 struct iwl_wowlan_status_v6 *v6 = (void *)cmd.resp_pkt->data; 2664 2665 status = iwl_mvm_parse_wowlan_status_common_v6(mvm, v6, len); 2666 if (!status) 2667 goto out_free_resp; 2668 2669 BUILD_BUG_ON(sizeof(v6->gtk.decrypt_key) > 2670 sizeof(status->gtk[0].key)); 2671 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY + 2672 sizeof(v6->gtk.tkip_mic_key) > 2673 sizeof(status->gtk[0].key)); 2674 2675 /* copy GTK info to the right place */ 2676 memcpy(status->gtk[0].key, v6->gtk.decrypt_key, 2677 sizeof(v6->gtk.decrypt_key)); 2678 memcpy(status->gtk[0].key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 2679 v6->gtk.tkip_mic_key, 2680 sizeof(v6->gtk.tkip_mic_key)); 2681 2682 iwl_mvm_convert_key_counters(status, &v6->gtk.rsc.all_tsc_rsc); 2683 2684 /* hardcode the key length to 16 since v6 only supports 16 */ 2685 status->gtk[0].len = 16; 2686 2687 /* 2688 * The key index only uses 2 bits (values 0 to 3) and 2689 * we always set bit 7 which means this is the 2690 * currently used key. 2691 */ 2692 status->gtk[0].flags = v6->gtk.key_index | BIT(7); 2693 } else if (notif_ver == 7) { 2694 struct iwl_wowlan_status_v7 *v7 = (void *)cmd.resp_pkt->data; 2695 2696 status = iwl_mvm_parse_wowlan_status_common_v7(mvm, v7, len); 2697 if (!status) 2698 goto out_free_resp; 2699 2700 iwl_mvm_convert_key_counters(status, &v7->gtk[0].rsc.all_tsc_rsc); 2701 iwl_mvm_convert_gtk_v2(status, &v7->gtk[0]); 2702 iwl_mvm_convert_igtk(status, &v7->igtk[0]); 2703 } else if (notif_ver == 9 || notif_ver == 10 || notif_ver == 11) { 2704 struct iwl_wowlan_status_v9 *v9 = (void *)cmd.resp_pkt->data; 2705 2706 /* these three command versions have same layout and size, the 2707 * difference is only in a few not used (reserved) fields. 2708 */ 2709 status = iwl_mvm_parse_wowlan_status_common_v9(mvm, v9, len); 2710 if (!status) 2711 goto out_free_resp; 2712 2713 iwl_mvm_convert_key_counters(status, &v9->gtk[0].rsc.all_tsc_rsc); 2714 iwl_mvm_convert_gtk_v2(status, &v9->gtk[0]); 2715 iwl_mvm_convert_igtk(status, &v9->igtk[0]); 2716 2717 status->tid_tear_down = v9->tid_tear_down; 2718 } else if (notif_ver == 12) { 2719 struct iwl_wowlan_status_v12 *v12 = (void *)cmd.resp_pkt->data; 2720 2721 status = iwl_mvm_parse_wowlan_status_common_v12(mvm, v12, len); 2722 if (!status) 2723 goto out_free_resp; 2724 2725 iwl_mvm_convert_key_counters_v5(status, &v12->gtk[0].sc); 2726 iwl_mvm_convert_gtk_v3(status, v12->gtk); 2727 iwl_mvm_convert_igtk(status, &v12->igtk[0]); 2728 2729 status->tid_tear_down = v12->tid_tear_down; 2730 } else { 2731 IWL_ERR(mvm, 2732 "Firmware advertises unknown WoWLAN status response %d!\n", 2733 notif_ver); 2734 status = NULL; 2735 } 2736 2737 out_free_resp: 2738 iwl_free_resp(&cmd); 2739 return status; 2740 } 2741 2742 /* releases the MVM mutex */ 2743 static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm, 2744 struct ieee80211_vif *vif, 2745 struct iwl_wowlan_status_data *status) 2746 { 2747 int i; 2748 bool keep = false; 2749 struct iwl_mvm_sta *mvm_ap_sta; 2750 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2751 int link_id = vif->active_links ? __ffs(vif->active_links) : 0; 2752 struct iwl_mvm_vif_link_info *mvm_link = mvmvif->link[link_id]; 2753 2754 if (WARN_ON(!mvm_link)) 2755 goto out_unlock; 2756 2757 if (!status) 2758 goto out_unlock; 2759 2760 IWL_DEBUG_WOWLAN(mvm, "wakeup reason 0x%x\n", 2761 status->wakeup_reasons); 2762 2763 mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, mvm_link->ap_sta_id); 2764 if (!mvm_ap_sta) 2765 goto out_unlock; 2766 2767 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 2768 u16 seq = status->qos_seq_ctr[i]; 2769 /* firmware stores last-used value, we store next value */ 2770 seq += 0x10; 2771 mvm_ap_sta->tid_data[i].seq_number = seq; 2772 } 2773 2774 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000) { 2775 i = mvm->offload_tid; 2776 iwl_trans_set_q_ptrs(mvm->trans, 2777 mvm_ap_sta->tid_data[i].txq_id, 2778 mvm_ap_sta->tid_data[i].seq_number >> 4); 2779 } 2780 2781 iwl_mvm_report_wakeup_reasons(mvm, vif, status); 2782 2783 keep = iwl_mvm_setup_connection_keep(mvm, vif, status); 2784 out_unlock: 2785 mutex_unlock(&mvm->mutex); 2786 return keep; 2787 } 2788 2789 #define ND_QUERY_BUF_LEN (sizeof(struct iwl_scan_offload_profile_match) * \ 2790 IWL_SCAN_MAX_PROFILES) 2791 2792 struct iwl_mvm_nd_results { 2793 u32 matched_profiles; 2794 u8 matches[ND_QUERY_BUF_LEN]; 2795 }; 2796 2797 static int 2798 iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm, 2799 struct iwl_mvm_nd_results *results) 2800 { 2801 struct iwl_scan_offload_match_info *query; 2802 struct iwl_host_cmd cmd = { 2803 .id = SCAN_OFFLOAD_PROFILES_QUERY_CMD, 2804 .flags = CMD_WANT_SKB, 2805 }; 2806 int ret, len; 2807 size_t query_len, matches_len; 2808 int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw); 2809 2810 ret = iwl_mvm_send_cmd(mvm, &cmd); 2811 if (ret) { 2812 IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret); 2813 return ret; 2814 } 2815 2816 if (fw_has_api(&mvm->fw->ucode_capa, 2817 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2818 query_len = sizeof(struct iwl_scan_offload_match_info); 2819 matches_len = sizeof(struct iwl_scan_offload_profile_match) * 2820 max_profiles; 2821 } else { 2822 query_len = sizeof(struct iwl_scan_offload_profiles_query_v1); 2823 matches_len = sizeof(struct iwl_scan_offload_profile_match_v1) * 2824 max_profiles; 2825 } 2826 2827 len = iwl_rx_packet_payload_len(cmd.resp_pkt); 2828 if (len < query_len) { 2829 IWL_ERR(mvm, "Invalid scan offload profiles query response!\n"); 2830 ret = -EIO; 2831 goto out_free_resp; 2832 } 2833 2834 query = (void *)cmd.resp_pkt->data; 2835 2836 results->matched_profiles = le32_to_cpu(query->matched_profiles); 2837 memcpy(results->matches, query->matches, matches_len); 2838 2839 #ifdef CONFIG_IWLWIFI_DEBUGFS 2840 mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done); 2841 #endif 2842 2843 out_free_resp: 2844 iwl_free_resp(&cmd); 2845 return ret; 2846 } 2847 2848 static int iwl_mvm_query_num_match_chans(struct iwl_mvm *mvm, 2849 struct iwl_mvm_nd_results *results, 2850 int idx) 2851 { 2852 int n_chans = 0, i; 2853 2854 if (fw_has_api(&mvm->fw->ucode_capa, 2855 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2856 struct iwl_scan_offload_profile_match *matches = 2857 (void *)results->matches; 2858 2859 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; i++) 2860 n_chans += hweight8(matches[idx].matching_channels[i]); 2861 } else { 2862 struct iwl_scan_offload_profile_match_v1 *matches = 2863 (void *)results->matches; 2864 2865 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1; i++) 2866 n_chans += hweight8(matches[idx].matching_channels[i]); 2867 } 2868 2869 return n_chans; 2870 } 2871 2872 static void iwl_mvm_query_set_freqs(struct iwl_mvm *mvm, 2873 struct iwl_mvm_nd_results *results, 2874 struct cfg80211_wowlan_nd_match *match, 2875 int idx) 2876 { 2877 int i; 2878 2879 if (fw_has_api(&mvm->fw->ucode_capa, 2880 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2881 struct iwl_scan_offload_profile_match *matches = 2882 (void *)results->matches; 2883 2884 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; i++) 2885 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8))) 2886 match->channels[match->n_channels++] = 2887 mvm->nd_channels[i]->center_freq; 2888 } else { 2889 struct iwl_scan_offload_profile_match_v1 *matches = 2890 (void *)results->matches; 2891 2892 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1 * 8; i++) 2893 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8))) 2894 match->channels[match->n_channels++] = 2895 mvm->nd_channels[i]->center_freq; 2896 } 2897 } 2898 2899 /** 2900 * enum iwl_d3_notif - d3 notifications 2901 * @IWL_D3_NOTIF_WOWLAN_INFO: WOWLAN_INFO_NOTIF was received 2902 * @IWL_D3_NOTIF_WOWLAN_WAKE_PKT: WOWLAN_WAKE_PKT_NOTIF was received 2903 * @IWL_D3_NOTIF_PROT_OFFLOAD: PROT_OFFLOAD_NOTIF was received 2904 * @IWL_D3_ND_MATCH_INFO: OFFLOAD_MATCH_INFO_NOTIF was received 2905 * @IWL_D3_NOTIF_D3_END_NOTIF: D3_END_NOTIF was received 2906 */ 2907 enum iwl_d3_notif { 2908 IWL_D3_NOTIF_WOWLAN_INFO = BIT(0), 2909 IWL_D3_NOTIF_WOWLAN_WAKE_PKT = BIT(1), 2910 IWL_D3_NOTIF_PROT_OFFLOAD = BIT(2), 2911 IWL_D3_ND_MATCH_INFO = BIT(3), 2912 IWL_D3_NOTIF_D3_END_NOTIF = BIT(4) 2913 }; 2914 2915 /* manage d3 resume data */ 2916 struct iwl_d3_data { 2917 struct iwl_wowlan_status_data *status; 2918 bool test; 2919 u32 d3_end_flags; 2920 u32 notif_expected; /* bitmap - see &enum iwl_d3_notif */ 2921 u32 notif_received; /* bitmap - see &enum iwl_d3_notif */ 2922 struct iwl_mvm_nd_results *nd_results; 2923 bool nd_results_valid; 2924 }; 2925 2926 static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm, 2927 struct ieee80211_vif *vif, 2928 struct iwl_d3_data *d3_data) 2929 { 2930 struct cfg80211_wowlan_nd_info *net_detect = NULL; 2931 struct cfg80211_wowlan_wakeup wakeup = { 2932 .pattern_idx = -1, 2933 }; 2934 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; 2935 unsigned long matched_profiles; 2936 u32 reasons = 0; 2937 int i, n_matches, ret; 2938 2939 if (WARN_ON(!d3_data || !d3_data->status)) 2940 goto out; 2941 2942 reasons = d3_data->status->wakeup_reasons; 2943 2944 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 2945 wakeup.rfkill_release = true; 2946 2947 if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) 2948 goto out; 2949 2950 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2951 WOWLAN_INFO_NOTIFICATION, 0)) { 2952 IWL_INFO(mvm, "Query FW for ND results\n"); 2953 ret = iwl_mvm_netdetect_query_results(mvm, d3_data->nd_results); 2954 2955 } else { 2956 IWL_INFO(mvm, "Notification based ND results\n"); 2957 ret = d3_data->nd_results_valid ? 0 : -1; 2958 } 2959 2960 if (ret || !d3_data->nd_results->matched_profiles) { 2961 wakeup_report = NULL; 2962 goto out; 2963 } 2964 2965 matched_profiles = d3_data->nd_results->matched_profiles; 2966 if (mvm->n_nd_match_sets) { 2967 n_matches = hweight_long(matched_profiles); 2968 } else { 2969 IWL_ERR(mvm, "no net detect match information available\n"); 2970 n_matches = 0; 2971 } 2972 2973 net_detect = kzalloc(struct_size(net_detect, matches, n_matches), 2974 GFP_KERNEL); 2975 if (!net_detect || !n_matches) 2976 goto out_report_nd; 2977 2978 for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) { 2979 struct cfg80211_wowlan_nd_match *match; 2980 int idx, n_channels = 0; 2981 2982 n_channels = iwl_mvm_query_num_match_chans(mvm, 2983 d3_data->nd_results, 2984 i); 2985 2986 match = kzalloc(struct_size(match, channels, n_channels), 2987 GFP_KERNEL); 2988 if (!match) 2989 goto out_report_nd; 2990 2991 net_detect->matches[net_detect->n_matches++] = match; 2992 2993 /* We inverted the order of the SSIDs in the scan 2994 * request, so invert the index here. 2995 */ 2996 idx = mvm->n_nd_match_sets - i - 1; 2997 match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len; 2998 memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid, 2999 match->ssid.ssid_len); 3000 3001 if (mvm->n_nd_channels < n_channels) 3002 continue; 3003 3004 iwl_mvm_query_set_freqs(mvm, d3_data->nd_results, match, i); 3005 } 3006 3007 out_report_nd: 3008 wakeup.net_detect = net_detect; 3009 out: 3010 iwl_mvm_free_nd(mvm); 3011 3012 mutex_unlock(&mvm->mutex); 3013 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); 3014 3015 if (net_detect) { 3016 for (i = 0; i < net_detect->n_matches; i++) 3017 kfree(net_detect->matches[i]); 3018 kfree(net_detect); 3019 } 3020 } 3021 3022 static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac, 3023 struct ieee80211_vif *vif) 3024 { 3025 /* skip the one we keep connection on */ 3026 if (data == vif) 3027 return; 3028 3029 if (vif->type == NL80211_IFTYPE_STATION) 3030 ieee80211_resume_disconnect(vif); 3031 } 3032 3033 static bool iwl_mvm_rt_status(struct iwl_trans *trans, u32 base, u32 *err_id) 3034 { 3035 struct error_table_start { 3036 /* cf. struct iwl_error_event_table */ 3037 u32 valid; 3038 __le32 err_id; 3039 } err_info; 3040 3041 if (!base) 3042 return false; 3043 3044 iwl_trans_read_mem_bytes(trans, base, 3045 &err_info, sizeof(err_info)); 3046 if (err_info.valid && err_id) 3047 *err_id = le32_to_cpu(err_info.err_id); 3048 3049 return !!err_info.valid; 3050 } 3051 3052 static bool iwl_mvm_check_rt_status(struct iwl_mvm *mvm, 3053 struct ieee80211_vif *vif) 3054 { 3055 u32 err_id; 3056 3057 /* check for lmac1 error */ 3058 if (iwl_mvm_rt_status(mvm->trans, 3059 mvm->trans->dbg.lmac_error_event_table[0], 3060 &err_id)) { 3061 if (err_id == RF_KILL_INDICATOR_FOR_WOWLAN) { 3062 struct cfg80211_wowlan_wakeup wakeup = { 3063 .rfkill_release = true, 3064 }; 3065 ieee80211_report_wowlan_wakeup(vif, &wakeup, 3066 GFP_KERNEL); 3067 } 3068 return true; 3069 } 3070 3071 /* check if we have lmac2 set and check for error */ 3072 if (iwl_mvm_rt_status(mvm->trans, 3073 mvm->trans->dbg.lmac_error_event_table[1], NULL)) 3074 return true; 3075 3076 /* check for umac error */ 3077 if (iwl_mvm_rt_status(mvm->trans, 3078 mvm->trans->dbg.umac_error_event_table, NULL)) 3079 return true; 3080 3081 return false; 3082 } 3083 3084 /* 3085 * This function assumes: 3086 * 1. The mutex is already held. 3087 * 2. The callee functions unlock the mutex. 3088 */ 3089 static bool 3090 iwl_mvm_choose_query_wakeup_reasons(struct iwl_mvm *mvm, 3091 struct ieee80211_vif *vif, 3092 struct iwl_d3_data *d3_data) 3093 { 3094 lockdep_assert_held(&mvm->mutex); 3095 3096 /* if FW uses status notification, status shouldn't be NULL here */ 3097 if (!d3_data->status) { 3098 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3099 u8 sta_id = mvm->net_detect ? IWL_MVM_INVALID_STA : 3100 mvmvif->deflink.ap_sta_id; 3101 3102 /* bug - FW with MLO has status notification */ 3103 WARN_ON(ieee80211_vif_is_mld(vif)); 3104 3105 d3_data->status = iwl_mvm_send_wowlan_get_status(mvm, sta_id); 3106 } 3107 3108 if (mvm->net_detect) { 3109 iwl_mvm_query_netdetect_reasons(mvm, vif, d3_data); 3110 } else { 3111 bool keep = iwl_mvm_query_wakeup_reasons(mvm, vif, 3112 d3_data->status); 3113 3114 #ifdef CONFIG_IWLWIFI_DEBUGFS 3115 if (keep) 3116 mvm->keep_vif = vif; 3117 #endif 3118 3119 return keep; 3120 } 3121 return false; 3122 } 3123 3124 #define IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT (IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET | \ 3125 IWL_WOWLAN_WAKEUP_BY_PATTERN | \ 3126 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN |\ 3127 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN_WILDCARD |\ 3128 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN |\ 3129 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN_WILDCARD) 3130 3131 static int iwl_mvm_wowlan_store_wake_pkt(struct iwl_mvm *mvm, 3132 struct iwl_wowlan_wake_pkt_notif *notif, 3133 struct iwl_wowlan_status_data *status, 3134 u32 len) 3135 { 3136 u32 data_size, packet_len = le32_to_cpu(notif->wake_packet_length); 3137 3138 if (len < sizeof(*notif)) { 3139 IWL_ERR(mvm, "Invalid WoWLAN wake packet notification!\n"); 3140 return -EIO; 3141 } 3142 3143 if (WARN_ON(!status)) { 3144 IWL_ERR(mvm, "Got wake packet notification but wowlan status data is NULL\n"); 3145 return -EIO; 3146 } 3147 3148 if (WARN_ON(!(status->wakeup_reasons & 3149 IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT))) { 3150 IWL_ERR(mvm, "Got wakeup packet but wakeup reason is %x\n", 3151 status->wakeup_reasons); 3152 return -EIO; 3153 } 3154 3155 data_size = len - offsetof(struct iwl_wowlan_wake_pkt_notif, wake_packet); 3156 3157 /* data_size got the padding from the notification, remove it. */ 3158 if (packet_len < data_size) 3159 data_size = packet_len; 3160 3161 status->wake_packet = kmemdup(notif->wake_packet, data_size, 3162 GFP_ATOMIC); 3163 3164 if (!status->wake_packet) 3165 return -ENOMEM; 3166 3167 status->wake_packet_length = packet_len; 3168 status->wake_packet_bufsize = data_size; 3169 3170 return 0; 3171 } 3172 3173 static void iwl_mvm_nd_match_info_handler(struct iwl_mvm *mvm, 3174 struct iwl_d3_data *d3_data, 3175 struct iwl_scan_offload_match_info *notif, 3176 u32 len) 3177 { 3178 struct iwl_wowlan_status_data *status = d3_data->status; 3179 struct ieee80211_vif *vif = iwl_mvm_get_bss_vif(mvm); 3180 struct iwl_mvm_nd_results *results = d3_data->nd_results; 3181 size_t i, matches_len = sizeof(struct iwl_scan_offload_profile_match) * 3182 iwl_umac_scan_get_max_profiles(mvm->fw); 3183 3184 if (IS_ERR_OR_NULL(vif)) 3185 return; 3186 3187 if (len < sizeof(struct iwl_scan_offload_match_info)) { 3188 IWL_ERR(mvm, "Invalid scan match info notification\n"); 3189 return; 3190 } 3191 3192 if (!mvm->net_detect) { 3193 IWL_ERR(mvm, "Unexpected scan match info notification\n"); 3194 return; 3195 } 3196 3197 if (!status || status->wakeup_reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) { 3198 IWL_ERR(mvm, 3199 "Ignore scan match info notification: no reason\n"); 3200 return; 3201 } 3202 3203 #ifdef CONFIG_IWLWIFI_DEBUGFS 3204 mvm->last_netdetect_scans = le32_to_cpu(notif->n_scans_done); 3205 #endif 3206 3207 results->matched_profiles = le32_to_cpu(notif->matched_profiles); 3208 IWL_INFO(mvm, "number of matched profiles=%u\n", 3209 results->matched_profiles); 3210 3211 if (results->matched_profiles) { 3212 memcpy(results->matches, notif->matches, matches_len); 3213 d3_data->nd_results_valid = true; 3214 } 3215 3216 /* no scan should be active at this point */ 3217 mvm->scan_status = 0; 3218 for (i = 0; i < mvm->max_scans; i++) 3219 mvm->scan_uid_status[i] = 0; 3220 } 3221 3222 static bool iwl_mvm_wait_d3_notif(struct iwl_notif_wait_data *notif_wait, 3223 struct iwl_rx_packet *pkt, void *data) 3224 { 3225 struct iwl_mvm *mvm = 3226 container_of(notif_wait, struct iwl_mvm, notif_wait); 3227 struct iwl_d3_data *d3_data = data; 3228 u32 len = iwl_rx_packet_payload_len(pkt); 3229 int ret; 3230 int wowlan_info_ver = iwl_fw_lookup_notif_ver(mvm->fw, 3231 PROT_OFFLOAD_GROUP, 3232 WOWLAN_INFO_NOTIFICATION, 3233 IWL_FW_CMD_VER_UNKNOWN); 3234 3235 3236 switch (WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) { 3237 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION): { 3238 3239 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_INFO) { 3240 /* We might get two notifications due to dual bss */ 3241 IWL_DEBUG_WOWLAN(mvm, 3242 "Got additional wowlan info notification\n"); 3243 break; 3244 } 3245 3246 if (wowlan_info_ver < 2) { 3247 struct iwl_wowlan_info_notif_v1 *notif_v1 = 3248 (void *)pkt->data; 3249 struct iwl_wowlan_info_notif_v2 *notif_v2; 3250 3251 notif_v2 = kmemdup(notif_v1, sizeof(*notif_v2), GFP_ATOMIC); 3252 3253 if (!notif_v2) 3254 return false; 3255 3256 notif_v2->tid_tear_down = notif_v1->tid_tear_down; 3257 notif_v2->station_id = notif_v1->station_id; 3258 memset_after(notif_v2, 0, station_id); 3259 iwl_mvm_parse_wowlan_info_notif_v2(mvm, notif_v2, 3260 d3_data->status, 3261 len); 3262 kfree(notif_v2); 3263 3264 } else if (wowlan_info_ver == 2) { 3265 struct iwl_wowlan_info_notif_v2 *notif_v2 = 3266 (void *)pkt->data; 3267 3268 iwl_mvm_parse_wowlan_info_notif_v2(mvm, notif_v2, 3269 d3_data->status, 3270 len); 3271 } else { 3272 struct iwl_wowlan_info_notif *notif = 3273 (void *)pkt->data; 3274 3275 iwl_mvm_parse_wowlan_info_notif(mvm, notif, 3276 d3_data->status, len, 3277 wowlan_info_ver > 3); 3278 } 3279 3280 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_INFO; 3281 3282 if (d3_data->status && 3283 d3_data->status->wakeup_reasons & IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT) 3284 /* We are supposed to get also wake packet notif */ 3285 d3_data->notif_expected |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT; 3286 3287 break; 3288 } 3289 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION): { 3290 struct iwl_wowlan_wake_pkt_notif *notif = (void *)pkt->data; 3291 3292 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_WAKE_PKT) { 3293 /* We shouldn't get two wake packet notifications */ 3294 IWL_ERR(mvm, 3295 "Got additional wowlan wake packet notification\n"); 3296 } else { 3297 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT; 3298 len = iwl_rx_packet_payload_len(pkt); 3299 ret = iwl_mvm_wowlan_store_wake_pkt(mvm, notif, 3300 d3_data->status, 3301 len); 3302 if (ret) 3303 IWL_ERR(mvm, 3304 "Can't parse WOWLAN_WAKE_PKT_NOTIFICATION\n"); 3305 } 3306 3307 break; 3308 } 3309 case WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF): { 3310 struct iwl_scan_offload_match_info *notif = (void *)pkt->data; 3311 3312 if (d3_data->notif_received & IWL_D3_ND_MATCH_INFO) { 3313 IWL_ERR(mvm, 3314 "Got additional netdetect match info\n"); 3315 break; 3316 } 3317 3318 d3_data->notif_received |= IWL_D3_ND_MATCH_INFO; 3319 3320 /* explicitly set this in the 'expected' as well */ 3321 d3_data->notif_expected |= IWL_D3_ND_MATCH_INFO; 3322 3323 len = iwl_rx_packet_payload_len(pkt); 3324 iwl_mvm_nd_match_info_handler(mvm, d3_data, notif, len); 3325 break; 3326 } 3327 case WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION): { 3328 struct iwl_mvm_d3_end_notif *notif = (void *)pkt->data; 3329 3330 d3_data->d3_end_flags = __le32_to_cpu(notif->flags); 3331 d3_data->notif_received |= IWL_D3_NOTIF_D3_END_NOTIF; 3332 3333 break; 3334 } 3335 default: 3336 WARN_ON(1); 3337 } 3338 3339 return d3_data->notif_received == d3_data->notif_expected; 3340 } 3341 3342 static int iwl_mvm_resume_firmware(struct iwl_mvm *mvm, bool test) 3343 { 3344 int ret; 3345 enum iwl_d3_status d3_status; 3346 struct iwl_host_cmd cmd = { 3347 .id = D0I3_END_CMD, 3348 .flags = CMD_WANT_SKB | CMD_SEND_IN_D3, 3349 }; 3350 bool reset = fw_has_capa(&mvm->fw->ucode_capa, 3351 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 3352 3353 ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, !reset); 3354 if (ret) 3355 return ret; 3356 3357 if (d3_status != IWL_D3_STATUS_ALIVE) { 3358 IWL_INFO(mvm, "Device was reset during suspend\n"); 3359 return -ENOENT; 3360 } 3361 3362 /* 3363 * We should trigger resume flow using command only for 22000 family 3364 * AX210 and above don't need the command since they have 3365 * the doorbell interrupt. 3366 */ 3367 if (mvm->trans->trans_cfg->device_family <= IWL_DEVICE_FAMILY_22000 && 3368 fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_D0I3_END_FIRST)) { 3369 ret = iwl_mvm_send_cmd(mvm, &cmd); 3370 if (ret < 0) 3371 IWL_ERR(mvm, "Failed to send D0I3_END_CMD first (%d)\n", 3372 ret); 3373 } 3374 3375 return ret; 3376 } 3377 3378 #define IWL_MVM_D3_NOTIF_TIMEOUT (HZ / 5) 3379 3380 static int iwl_mvm_d3_notif_wait(struct iwl_mvm *mvm, 3381 struct iwl_d3_data *d3_data) 3382 { 3383 static const u16 d3_resume_notif[] = { 3384 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION), 3385 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION), 3386 WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF), 3387 WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION) 3388 }; 3389 struct iwl_notification_wait wait_d3_notif; 3390 int ret; 3391 3392 iwl_init_notification_wait(&mvm->notif_wait, &wait_d3_notif, 3393 d3_resume_notif, ARRAY_SIZE(d3_resume_notif), 3394 iwl_mvm_wait_d3_notif, d3_data); 3395 3396 ret = iwl_mvm_resume_firmware(mvm, d3_data->test); 3397 if (ret) { 3398 iwl_remove_notification(&mvm->notif_wait, &wait_d3_notif); 3399 return ret; 3400 } 3401 3402 return iwl_wait_notification(&mvm->notif_wait, &wait_d3_notif, 3403 IWL_MVM_D3_NOTIF_TIMEOUT); 3404 } 3405 3406 static inline bool iwl_mvm_d3_resume_notif_based(struct iwl_mvm *mvm) 3407 { 3408 return iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3409 WOWLAN_INFO_NOTIFICATION, 0) && 3410 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3411 WOWLAN_WAKE_PKT_NOTIFICATION, 0) && 3412 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3413 D3_END_NOTIFICATION, 0); 3414 } 3415 3416 static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test) 3417 { 3418 struct ieee80211_vif *vif = NULL; 3419 int ret = 1; 3420 struct iwl_mvm_nd_results results = {}; 3421 struct iwl_d3_data d3_data = { 3422 .test = test, 3423 .notif_expected = 3424 IWL_D3_NOTIF_WOWLAN_INFO | 3425 IWL_D3_NOTIF_D3_END_NOTIF, 3426 .nd_results_valid = false, 3427 .nd_results = &results, 3428 }; 3429 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 3430 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 3431 bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa, 3432 IWL_UCODE_TLV_CAPA_D0I3_END_FIRST); 3433 bool resume_notif_based = iwl_mvm_d3_resume_notif_based(mvm); 3434 bool keep = false; 3435 3436 mutex_lock(&mvm->mutex); 3437 3438 mvm->last_reset_or_resume_time_jiffies = jiffies; 3439 3440 /* get the BSS vif pointer again */ 3441 vif = iwl_mvm_get_bss_vif(mvm); 3442 if (IS_ERR_OR_NULL(vif)) 3443 goto err; 3444 3445 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt); 3446 3447 if (iwl_mvm_check_rt_status(mvm, vif)) { 3448 set_bit(STATUS_FW_ERROR, &mvm->trans->status); 3449 iwl_mvm_dump_nic_error_log(mvm); 3450 iwl_dbg_tlv_time_point(&mvm->fwrt, 3451 IWL_FW_INI_TIME_POINT_FW_ASSERT, NULL); 3452 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert, 3453 false, 0); 3454 ret = 1; 3455 goto err; 3456 } 3457 3458 if (resume_notif_based) { 3459 d3_data.status = kzalloc(sizeof(*d3_data.status), GFP_KERNEL); 3460 if (!d3_data.status) { 3461 IWL_ERR(mvm, "Failed to allocate wowlan status\n"); 3462 ret = -ENOMEM; 3463 goto err; 3464 } 3465 3466 ret = iwl_mvm_d3_notif_wait(mvm, &d3_data); 3467 if (ret) 3468 goto err; 3469 } else { 3470 ret = iwl_mvm_resume_firmware(mvm, test); 3471 if (ret < 0) 3472 goto err; 3473 } 3474 3475 /* after the successful handshake, we're out of D3 */ 3476 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED; 3477 3478 /* when reset is required we can't send these following commands */ 3479 if (d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE) 3480 goto query_wakeup_reasons; 3481 3482 /* 3483 * Query the current location and source from the D3 firmware so we 3484 * can play it back when we re-intiailize the D0 firmware 3485 */ 3486 iwl_mvm_update_changed_regdom(mvm); 3487 3488 /* Re-configure PPAG settings */ 3489 iwl_mvm_ppag_send_cmd(mvm); 3490 3491 if (!unified_image) 3492 /* Re-configure default SAR profile */ 3493 iwl_mvm_sar_select_profile(mvm, 1, 1); 3494 3495 if (mvm->net_detect && unified_image) { 3496 /* If this is a non-unified image, we restart the FW, 3497 * so no need to stop the netdetect scan. If that 3498 * fails, continue and try to get the wake-up reasons, 3499 * but trigger a HW restart by keeping a failure code 3500 * in ret. 3501 */ 3502 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT, 3503 false); 3504 } 3505 3506 query_wakeup_reasons: 3507 keep = iwl_mvm_choose_query_wakeup_reasons(mvm, vif, &d3_data); 3508 /* has unlocked the mutex, so skip that */ 3509 goto out; 3510 3511 err: 3512 mutex_unlock(&mvm->mutex); 3513 out: 3514 if (d3_data.status) 3515 kfree(d3_data.status->wake_packet); 3516 kfree(d3_data.status); 3517 iwl_mvm_free_nd(mvm); 3518 3519 if (!d3_data.test && !mvm->net_detect) 3520 ieee80211_iterate_active_interfaces_mtx(mvm->hw, 3521 IEEE80211_IFACE_ITER_NORMAL, 3522 iwl_mvm_d3_disconnect_iter, 3523 keep ? vif : NULL); 3524 3525 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 3526 3527 /* no need to reset the device in unified images, if successful */ 3528 if (unified_image && !ret) { 3529 /* nothing else to do if we already sent D0I3_END_CMD */ 3530 if (d0i3_first) 3531 return 0; 3532 3533 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3534 D3_END_NOTIFICATION, 0)) { 3535 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL); 3536 if (!ret) 3537 return 0; 3538 } else if (!(d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)) { 3539 return 0; 3540 } 3541 } 3542 3543 /* 3544 * Reconfigure the device in one of the following cases: 3545 * 1. We are not using a unified image 3546 * 2. We are using a unified image but had an error while exiting D3 3547 */ 3548 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); 3549 3550 /* regardless of what happened, we're now out of D3 */ 3551 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED; 3552 3553 return 1; 3554 } 3555 3556 int iwl_mvm_resume(struct ieee80211_hw *hw) 3557 { 3558 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3559 int ret; 3560 3561 ret = __iwl_mvm_resume(mvm, false); 3562 3563 iwl_mvm_resume_tcm(mvm); 3564 3565 iwl_fw_runtime_resume(&mvm->fwrt); 3566 3567 return ret; 3568 } 3569 3570 void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled) 3571 { 3572 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3573 3574 device_set_wakeup_enable(mvm->trans->dev, enabled); 3575 } 3576 3577 #ifdef CONFIG_IWLWIFI_DEBUGFS 3578 static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file) 3579 { 3580 struct iwl_mvm *mvm = inode->i_private; 3581 int err; 3582 3583 if (mvm->d3_test_active) 3584 return -EBUSY; 3585 3586 file->private_data = inode->i_private; 3587 3588 iwl_mvm_pause_tcm(mvm, true); 3589 3590 iwl_fw_runtime_suspend(&mvm->fwrt); 3591 3592 /* start pseudo D3 */ 3593 rtnl_lock(); 3594 wiphy_lock(mvm->hw->wiphy); 3595 err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true); 3596 wiphy_unlock(mvm->hw->wiphy); 3597 rtnl_unlock(); 3598 if (err > 0) 3599 err = -EINVAL; 3600 if (err) 3601 return err; 3602 3603 mvm->d3_test_active = true; 3604 mvm->keep_vif = NULL; 3605 return 0; 3606 } 3607 3608 static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf, 3609 size_t count, loff_t *ppos) 3610 { 3611 struct iwl_mvm *mvm = file->private_data; 3612 unsigned long end = jiffies + 60 * HZ; 3613 u32 pme_asserted; 3614 3615 while (true) { 3616 /* read pme_ptr if available */ 3617 if (mvm->d3_test_pme_ptr) { 3618 pme_asserted = iwl_trans_read_mem32(mvm->trans, 3619 mvm->d3_test_pme_ptr); 3620 if (pme_asserted) 3621 break; 3622 } 3623 3624 if (msleep_interruptible(100)) 3625 break; 3626 3627 if (time_is_before_jiffies(end)) { 3628 IWL_ERR(mvm, 3629 "ending pseudo-D3 with timeout after ~60 seconds\n"); 3630 return -ETIMEDOUT; 3631 } 3632 } 3633 3634 return 0; 3635 } 3636 3637 static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac, 3638 struct ieee80211_vif *vif) 3639 { 3640 /* skip the one we keep connection on */ 3641 if (_data == vif) 3642 return; 3643 3644 if (vif->type == NL80211_IFTYPE_STATION) 3645 ieee80211_connection_loss(vif); 3646 } 3647 3648 static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file) 3649 { 3650 struct iwl_mvm *mvm = inode->i_private; 3651 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 3652 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 3653 3654 mvm->d3_test_active = false; 3655 3656 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt); 3657 3658 rtnl_lock(); 3659 wiphy_lock(mvm->hw->wiphy); 3660 __iwl_mvm_resume(mvm, true); 3661 wiphy_unlock(mvm->hw->wiphy); 3662 rtnl_unlock(); 3663 3664 iwl_mvm_resume_tcm(mvm); 3665 3666 iwl_fw_runtime_resume(&mvm->fwrt); 3667 3668 iwl_abort_notification_waits(&mvm->notif_wait); 3669 if (!unified_image) { 3670 int remaining_time = 10; 3671 3672 ieee80211_restart_hw(mvm->hw); 3673 3674 /* wait for restart and disconnect all interfaces */ 3675 while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 3676 remaining_time > 0) { 3677 remaining_time--; 3678 msleep(1000); 3679 } 3680 3681 if (remaining_time == 0) 3682 IWL_ERR(mvm, "Timed out waiting for HW restart!\n"); 3683 } 3684 3685 ieee80211_iterate_active_interfaces_atomic( 3686 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 3687 iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif); 3688 3689 return 0; 3690 } 3691 3692 const struct file_operations iwl_dbgfs_d3_test_ops = { 3693 .llseek = no_llseek, 3694 .open = iwl_mvm_d3_test_open, 3695 .read = iwl_mvm_d3_test_read, 3696 .release = iwl_mvm_d3_test_release, 3697 }; 3698 #endif 3699