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 primary_link = iwl_mvm_get_primary_link(vif); 1265 1266 /* leave ESR immediately, not only async with iwl_mvm_block_esr() */ 1267 if (ieee80211_vif_is_mld(vif)) { 1268 ret = ieee80211_set_active_links(vif, BIT(primary_link)); 1269 if (ret) 1270 return ret; 1271 } 1272 1273 mutex_lock(&mvm->mutex); 1274 /* only additionally block for consistency and to avoid concurrency */ 1275 iwl_mvm_block_esr(mvm, vif, IWL_MVM_ESR_BLOCKED_WOWLAN, primary_link); 1276 1277 set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 1278 1279 synchronize_net(); 1280 1281 mvmvif = iwl_mvm_vif_from_mac80211(vif); 1282 1283 mvm_link = mvmvif->link[primary_link]; 1284 if (WARN_ON_ONCE(!mvm_link)) { 1285 ret = -EINVAL; 1286 goto out_noreset; 1287 } 1288 1289 if (mvm_link->ap_sta_id == IWL_MVM_INVALID_STA) { 1290 /* if we're not associated, this must be netdetect */ 1291 if (!wowlan->nd_config) { 1292 ret = 1; 1293 goto out_noreset; 1294 } 1295 1296 ret = iwl_mvm_netdetect_config( 1297 mvm, wowlan, wowlan->nd_config, vif); 1298 if (ret) 1299 goto out; 1300 1301 mvm->net_detect = true; 1302 } else { 1303 struct iwl_wowlan_config_cmd wowlan_config_cmd = { 1304 .offloading_tid = 0, 1305 }; 1306 1307 wowlan_config_cmd.sta_id = mvm_link->ap_sta_id; 1308 1309 ap_sta = rcu_dereference_protected( 1310 mvm->fw_id_to_mac_id[mvm_link->ap_sta_id], 1311 lockdep_is_held(&mvm->mutex)); 1312 if (IS_ERR_OR_NULL(ap_sta)) { 1313 ret = -EINVAL; 1314 goto out_noreset; 1315 } 1316 1317 ret = iwl_mvm_sta_ensure_queue( 1318 mvm, ap_sta->txq[wowlan_config_cmd.offloading_tid]); 1319 if (ret) 1320 goto out_noreset; 1321 1322 ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd, 1323 vif, mvmvif, ap_sta); 1324 if (ret) 1325 goto out_noreset; 1326 ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd, 1327 vif, mvmvif, mvm_link, ap_sta); 1328 if (ret) 1329 goto out; 1330 1331 mvm->net_detect = false; 1332 } 1333 1334 ret = iwl_mvm_power_update_device(mvm); 1335 if (ret) 1336 goto out; 1337 1338 ret = iwl_mvm_power_update_mac(mvm); 1339 if (ret) 1340 goto out; 1341 1342 #ifdef CONFIG_IWLWIFI_DEBUGFS 1343 if (mvm->d3_wake_sysassert) 1344 d3_cfg_cmd_data.wakeup_flags |= 1345 cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR); 1346 #endif 1347 1348 /* 1349 * Prior to 9000 device family the driver needs to stop the dbg 1350 * recording before entering D3. In later devices the FW stops the 1351 * recording automatically. 1352 */ 1353 if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_9000) 1354 iwl_fw_dbg_stop_restart_recording(&mvm->fwrt, NULL, true); 1355 1356 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_D3; 1357 1358 /* must be last -- this switches firmware state */ 1359 ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd); 1360 if (ret) 1361 goto out; 1362 #ifdef CONFIG_IWLWIFI_DEBUGFS 1363 len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt); 1364 if (len >= sizeof(u32)) { 1365 mvm->d3_test_pme_ptr = 1366 le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data); 1367 } 1368 #endif 1369 iwl_free_resp(&d3_cfg_cmd); 1370 1371 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1372 1373 ret = iwl_trans_d3_suspend(mvm->trans, test, !unified_image); 1374 out: 1375 if (ret < 0) { 1376 iwl_mvm_free_nd(mvm); 1377 1378 if (!unified_image) { 1379 if (mvm->fw_restart > 0) { 1380 mvm->fw_restart--; 1381 ieee80211_restart_hw(mvm->hw); 1382 } 1383 } 1384 1385 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 1386 } 1387 out_noreset: 1388 mutex_unlock(&mvm->mutex); 1389 1390 return ret; 1391 } 1392 1393 int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) 1394 { 1395 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1396 1397 iwl_mvm_pause_tcm(mvm, true); 1398 1399 iwl_fw_runtime_suspend(&mvm->fwrt); 1400 1401 return __iwl_mvm_suspend(hw, wowlan, false); 1402 } 1403 1404 struct iwl_multicast_key_data { 1405 u8 key[WOWLAN_KEY_MAX_SIZE]; 1406 u8 len; 1407 u8 flags; 1408 u8 id; 1409 u8 ipn[6]; 1410 }; 1411 1412 /* converted data from the different status responses */ 1413 struct iwl_wowlan_status_data { 1414 u64 replay_ctr; 1415 u32 num_of_gtk_rekeys; 1416 u32 received_beacons; 1417 u32 wakeup_reasons; 1418 u32 wake_packet_length; 1419 u32 wake_packet_bufsize; 1420 u16 pattern_number; 1421 u16 non_qos_seq_ctr; 1422 u16 qos_seq_ctr[8]; 1423 u8 tid_tear_down; 1424 1425 struct { 1426 /* including RX MIC key for TKIP */ 1427 u8 key[WOWLAN_KEY_MAX_SIZE]; 1428 u8 len; 1429 u8 flags; 1430 u8 id; 1431 } gtk[WOWLAN_GTK_KEYS_NUM]; 1432 1433 struct { 1434 /* 1435 * We store both the TKIP and AES representations 1436 * coming from the firmware because we decode the 1437 * data from there before we iterate the keys and 1438 * know which one we need. 1439 */ 1440 struct { 1441 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT]; 1442 } tkip, aes; 1443 1444 /* 1445 * We use -1 for when we have valid data but don't know 1446 * the key ID from firmware, and thus it needs to be 1447 * installed with the last key (depending on rekeying). 1448 */ 1449 s8 key_id; 1450 bool valid; 1451 } gtk_seq[2]; 1452 1453 struct { 1454 /* Same as above */ 1455 struct { 1456 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT]; 1457 u64 tx_pn; 1458 } tkip, aes; 1459 } ptk; 1460 1461 struct iwl_multicast_key_data igtk; 1462 struct iwl_multicast_key_data bigtk[WOWLAN_BIGTK_KEYS_NUM]; 1463 1464 int num_mlo_keys; 1465 struct iwl_wowlan_mlo_gtk mlo_keys[WOWLAN_MAX_MLO_KEYS]; 1466 1467 u8 *wake_packet; 1468 }; 1469 1470 static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm, 1471 struct ieee80211_vif *vif, 1472 struct iwl_wowlan_status_data *status) 1473 { 1474 struct sk_buff *pkt = NULL; 1475 struct cfg80211_wowlan_wakeup wakeup = { 1476 .pattern_idx = -1, 1477 }; 1478 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; 1479 u32 reasons = status->wakeup_reasons; 1480 1481 if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) { 1482 wakeup_report = NULL; 1483 goto report; 1484 } 1485 1486 pm_wakeup_event(mvm->dev, 0); 1487 1488 if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET) 1489 wakeup.magic_pkt = true; 1490 1491 if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN) 1492 wakeup.pattern_idx = 1493 status->pattern_number; 1494 1495 if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 1496 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH | 1497 IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)) 1498 wakeup.disconnect = true; 1499 1500 if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE) 1501 wakeup.gtk_rekey_failure = true; 1502 1503 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 1504 wakeup.rfkill_release = true; 1505 1506 if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST) 1507 wakeup.eap_identity_req = true; 1508 1509 if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE) 1510 wakeup.four_way_handshake = true; 1511 1512 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS) 1513 wakeup.tcp_connlost = true; 1514 1515 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE) 1516 wakeup.tcp_nomoretokens = true; 1517 1518 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET) 1519 wakeup.tcp_match = true; 1520 1521 if (reasons & IWL_WAKEUP_BY_11W_UNPROTECTED_DEAUTH_OR_DISASSOC) 1522 wakeup.unprot_deauth_disassoc = true; 1523 1524 if (status->wake_packet) { 1525 int pktsize = status->wake_packet_bufsize; 1526 int pktlen = status->wake_packet_length; 1527 const u8 *pktdata = status->wake_packet; 1528 const struct ieee80211_hdr *hdr = (const void *)pktdata; 1529 int truncated = pktlen - pktsize; 1530 1531 /* this would be a firmware bug */ 1532 if (WARN_ON_ONCE(truncated < 0)) 1533 truncated = 0; 1534 1535 if (ieee80211_is_data(hdr->frame_control)) { 1536 int hdrlen = ieee80211_hdrlen(hdr->frame_control); 1537 int ivlen = 0, icvlen = 4; /* also FCS */ 1538 1539 pkt = alloc_skb(pktsize, GFP_KERNEL); 1540 if (!pkt) 1541 goto report; 1542 1543 skb_put_data(pkt, pktdata, hdrlen); 1544 pktdata += hdrlen; 1545 pktsize -= hdrlen; 1546 1547 if (ieee80211_has_protected(hdr->frame_control)) { 1548 /* 1549 * This is unlocked and using gtk_i(c)vlen, 1550 * but since everything is under RTNL still 1551 * that's not really a problem - changing 1552 * it would be difficult. 1553 */ 1554 if (is_multicast_ether_addr(hdr->addr1)) { 1555 ivlen = mvm->gtk_ivlen; 1556 icvlen += mvm->gtk_icvlen; 1557 } else { 1558 ivlen = mvm->ptk_ivlen; 1559 icvlen += mvm->ptk_icvlen; 1560 } 1561 } 1562 1563 /* if truncated, FCS/ICV is (partially) gone */ 1564 if (truncated >= icvlen) { 1565 icvlen = 0; 1566 truncated -= icvlen; 1567 } else { 1568 icvlen -= truncated; 1569 truncated = 0; 1570 } 1571 1572 pktsize -= ivlen + icvlen; 1573 pktdata += ivlen; 1574 1575 skb_put_data(pkt, pktdata, pktsize); 1576 1577 if (ieee80211_data_to_8023(pkt, vif->addr, vif->type)) 1578 goto report; 1579 wakeup.packet = pkt->data; 1580 wakeup.packet_present_len = pkt->len; 1581 wakeup.packet_len = pkt->len - truncated; 1582 wakeup.packet_80211 = false; 1583 } else { 1584 int fcslen = 4; 1585 1586 if (truncated >= 4) { 1587 truncated -= 4; 1588 fcslen = 0; 1589 } else { 1590 fcslen -= truncated; 1591 truncated = 0; 1592 } 1593 pktsize -= fcslen; 1594 wakeup.packet = status->wake_packet; 1595 wakeup.packet_present_len = pktsize; 1596 wakeup.packet_len = pktlen - truncated; 1597 wakeup.packet_80211 = true; 1598 } 1599 } 1600 1601 report: 1602 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); 1603 kfree_skb(pkt); 1604 } 1605 1606 static void iwl_mvm_le64_to_aes_seq(__le64 le_pn, struct ieee80211_key_seq *seq) 1607 { 1608 u64 pn = le64_to_cpu(le_pn); 1609 1610 seq->ccmp.pn[0] = pn >> 40; 1611 seq->ccmp.pn[1] = pn >> 32; 1612 seq->ccmp.pn[2] = pn >> 24; 1613 seq->ccmp.pn[3] = pn >> 16; 1614 seq->ccmp.pn[4] = pn >> 8; 1615 seq->ccmp.pn[5] = pn; 1616 } 1617 1618 static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc, 1619 struct ieee80211_key_seq *seq) 1620 { 1621 iwl_mvm_le64_to_aes_seq(sc->pn, seq); 1622 } 1623 1624 static void iwl_mvm_le64_to_tkip_seq(__le64 le_pn, struct ieee80211_key_seq *seq) 1625 { 1626 u64 pn = le64_to_cpu(le_pn); 1627 1628 seq->tkip.iv16 = (u16)pn; 1629 seq->tkip.iv32 = (u32)(pn >> 16); 1630 } 1631 1632 static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc, 1633 struct ieee80211_key_seq *seq) 1634 { 1635 seq->tkip.iv32 = le32_to_cpu(sc->iv32); 1636 seq->tkip.iv16 = le16_to_cpu(sc->iv16); 1637 } 1638 1639 static void iwl_mvm_set_key_rx_seq_tids(struct ieee80211_key_conf *key, 1640 struct ieee80211_key_seq *seq) 1641 { 1642 int tid; 1643 1644 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) 1645 ieee80211_set_key_rx_seq(key, tid, &seq[tid]); 1646 } 1647 1648 static void iwl_mvm_set_aes_ptk_rx_seq(struct iwl_mvm *mvm, 1649 struct iwl_wowlan_status_data *status, 1650 struct ieee80211_sta *sta, 1651 struct ieee80211_key_conf *key) 1652 { 1653 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1654 struct iwl_mvm_key_pn *ptk_pn; 1655 int tid; 1656 1657 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.aes.seq); 1658 1659 if (!iwl_mvm_has_new_rx_api(mvm)) 1660 return; 1661 1662 1663 rcu_read_lock(); 1664 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]); 1665 if (WARN_ON(!ptk_pn)) { 1666 rcu_read_unlock(); 1667 return; 1668 } 1669 1670 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1671 int i; 1672 1673 for (i = 1; i < mvm->trans->num_rx_queues; i++) 1674 memcpy(ptk_pn->q[i].pn[tid], 1675 status->ptk.aes.seq[tid].ccmp.pn, 1676 IEEE80211_CCMP_PN_LEN); 1677 } 1678 rcu_read_unlock(); 1679 } 1680 1681 static void iwl_mvm_convert_key_counters(struct iwl_wowlan_status_data *status, 1682 union iwl_all_tsc_rsc *sc) 1683 { 1684 int i; 1685 1686 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT); 1687 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC); 1688 1689 /* GTK RX counters */ 1690 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1691 iwl_mvm_tkip_sc_to_seq(&sc->tkip.multicast_rsc[i], 1692 &status->gtk_seq[0].tkip.seq[i]); 1693 iwl_mvm_aes_sc_to_seq(&sc->aes.multicast_rsc[i], 1694 &status->gtk_seq[0].aes.seq[i]); 1695 } 1696 status->gtk_seq[0].valid = true; 1697 status->gtk_seq[0].key_id = -1; 1698 1699 /* PTK TX counter */ 1700 status->ptk.tkip.tx_pn = (u64)le16_to_cpu(sc->tkip.tsc.iv16) | 1701 ((u64)le32_to_cpu(sc->tkip.tsc.iv32) << 16); 1702 status->ptk.aes.tx_pn = le64_to_cpu(sc->aes.tsc.pn); 1703 1704 /* PTK RX counters */ 1705 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1706 iwl_mvm_tkip_sc_to_seq(&sc->tkip.unicast_rsc[i], 1707 &status->ptk.tkip.seq[i]); 1708 iwl_mvm_aes_sc_to_seq(&sc->aes.unicast_rsc[i], 1709 &status->ptk.aes.seq[i]); 1710 } 1711 } 1712 1713 static void 1714 iwl_mvm_convert_key_counters_v5_gtk_seq(struct iwl_wowlan_status_data *status, 1715 struct iwl_wowlan_all_rsc_tsc_v5 *sc, 1716 unsigned int idx, unsigned int key_id) 1717 { 1718 int tid; 1719 1720 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1721 iwl_mvm_le64_to_tkip_seq(sc->mcast_rsc[idx][tid], 1722 &status->gtk_seq[idx].tkip.seq[tid]); 1723 iwl_mvm_le64_to_aes_seq(sc->mcast_rsc[idx][tid], 1724 &status->gtk_seq[idx].aes.seq[tid]); 1725 } 1726 1727 status->gtk_seq[idx].valid = true; 1728 status->gtk_seq[idx].key_id = key_id; 1729 } 1730 1731 static void 1732 iwl_mvm_convert_key_counters_v5(struct iwl_wowlan_status_data *status, 1733 struct iwl_wowlan_all_rsc_tsc_v5 *sc) 1734 { 1735 int i, tid; 1736 1737 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT); 1738 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC); 1739 BUILD_BUG_ON(ARRAY_SIZE(sc->mcast_rsc) != ARRAY_SIZE(status->gtk_seq)); 1740 1741 /* GTK RX counters */ 1742 for (i = 0; i < ARRAY_SIZE(sc->mcast_key_id_map); i++) { 1743 u8 entry = sc->mcast_key_id_map[i]; 1744 1745 if (entry < ARRAY_SIZE(sc->mcast_rsc)) 1746 iwl_mvm_convert_key_counters_v5_gtk_seq(status, sc, 1747 entry, i); 1748 } 1749 1750 /* PTK TX counters not needed, assigned in device */ 1751 1752 /* PTK RX counters */ 1753 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1754 iwl_mvm_le64_to_tkip_seq(sc->ucast_rsc[tid], 1755 &status->ptk.tkip.seq[tid]); 1756 iwl_mvm_le64_to_aes_seq(sc->ucast_rsc[tid], 1757 &status->ptk.aes.seq[tid]); 1758 } 1759 } 1760 1761 static void iwl_mvm_set_key_rx_seq_idx(struct ieee80211_key_conf *key, 1762 struct iwl_wowlan_status_data *status, 1763 int idx) 1764 { 1765 switch (key->cipher) { 1766 case WLAN_CIPHER_SUITE_CCMP: 1767 case WLAN_CIPHER_SUITE_GCMP: 1768 case WLAN_CIPHER_SUITE_GCMP_256: 1769 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].aes.seq); 1770 break; 1771 case WLAN_CIPHER_SUITE_TKIP: 1772 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].tkip.seq); 1773 break; 1774 default: 1775 WARN_ON(1); 1776 } 1777 } 1778 1779 static void iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf *key, 1780 struct iwl_wowlan_status_data *status, 1781 bool installed) 1782 { 1783 int i; 1784 1785 for (i = 0; i < ARRAY_SIZE(status->gtk_seq); i++) { 1786 if (!status->gtk_seq[i].valid) 1787 continue; 1788 1789 /* Handle the case where we know the key ID */ 1790 if (status->gtk_seq[i].key_id == key->keyidx) { 1791 s8 new_key_id = -1; 1792 1793 if (status->num_of_gtk_rekeys) 1794 new_key_id = status->gtk[0].flags & 1795 IWL_WOWLAN_GTK_IDX_MASK; 1796 1797 /* Don't install a new key's value to an old key */ 1798 if (new_key_id != key->keyidx) 1799 iwl_mvm_set_key_rx_seq_idx(key, status, i); 1800 continue; 1801 } 1802 1803 /* handle the case where we didn't, last key only */ 1804 if (status->gtk_seq[i].key_id == -1 && 1805 (!status->num_of_gtk_rekeys || installed)) 1806 iwl_mvm_set_key_rx_seq_idx(key, status, i); 1807 } 1808 } 1809 1810 struct iwl_mvm_d3_gtk_iter_data { 1811 struct iwl_mvm *mvm; 1812 struct iwl_wowlan_status_data *status; 1813 u32 gtk_cipher, igtk_cipher, bigtk_cipher; 1814 bool unhandled_cipher, igtk_support, bigtk_support; 1815 int num_keys; 1816 }; 1817 1818 static void iwl_mvm_d3_find_last_keys(struct ieee80211_hw *hw, 1819 struct ieee80211_vif *vif, 1820 struct ieee80211_sta *sta, 1821 struct ieee80211_key_conf *key, 1822 void *_data) 1823 { 1824 struct iwl_mvm_d3_gtk_iter_data *data = _data; 1825 int link_id = vif->active_links ? __ffs(vif->active_links) : -1; 1826 1827 if (link_id >= 0 && key->link_id >= 0 && link_id != key->link_id) 1828 return; 1829 1830 if (data->unhandled_cipher) 1831 return; 1832 1833 switch (key->cipher) { 1834 case WLAN_CIPHER_SUITE_WEP40: 1835 case WLAN_CIPHER_SUITE_WEP104: 1836 /* ignore WEP completely, nothing to do */ 1837 return; 1838 case WLAN_CIPHER_SUITE_CCMP: 1839 case WLAN_CIPHER_SUITE_GCMP: 1840 case WLAN_CIPHER_SUITE_GCMP_256: 1841 case WLAN_CIPHER_SUITE_TKIP: 1842 /* we support these */ 1843 data->gtk_cipher = key->cipher; 1844 break; 1845 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 1846 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 1847 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 1848 case WLAN_CIPHER_SUITE_AES_CMAC: 1849 /* we support these */ 1850 if (data->igtk_support && 1851 (key->keyidx == 4 || key->keyidx == 5)) { 1852 data->igtk_cipher = key->cipher; 1853 } else if (data->bigtk_support && 1854 (key->keyidx == 6 || key->keyidx == 7)) { 1855 data->bigtk_cipher = key->cipher; 1856 } else { 1857 data->unhandled_cipher = true; 1858 return; 1859 } 1860 break; 1861 default: 1862 /* everything else - disconnect from AP */ 1863 data->unhandled_cipher = true; 1864 return; 1865 } 1866 1867 data->num_keys++; 1868 } 1869 1870 static void 1871 iwl_mvm_d3_set_igtk_bigtk_ipn(const struct iwl_multicast_key_data *key, 1872 struct ieee80211_key_seq *seq, u32 cipher) 1873 { 1874 switch (cipher) { 1875 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 1876 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 1877 BUILD_BUG_ON(sizeof(seq->aes_gmac.pn) != sizeof(key->ipn)); 1878 memcpy(seq->aes_gmac.pn, key->ipn, sizeof(seq->aes_gmac.pn)); 1879 break; 1880 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 1881 case WLAN_CIPHER_SUITE_AES_CMAC: 1882 BUILD_BUG_ON(sizeof(seq->aes_cmac.pn) != sizeof(key->ipn)); 1883 memcpy(seq->aes_cmac.pn, key->ipn, sizeof(seq->aes_cmac.pn)); 1884 break; 1885 default: 1886 WARN_ON(1); 1887 } 1888 } 1889 1890 static void 1891 iwl_mvm_d3_update_igtk_bigtk(struct iwl_wowlan_status_data *status, 1892 struct ieee80211_key_conf *key, 1893 struct iwl_multicast_key_data *key_data) 1894 { 1895 if (status->num_of_gtk_rekeys && key_data->len) { 1896 /* remove rekeyed key */ 1897 ieee80211_remove_key(key); 1898 } else { 1899 struct ieee80211_key_seq seq; 1900 1901 iwl_mvm_d3_set_igtk_bigtk_ipn(key_data, 1902 &seq, 1903 key->cipher); 1904 ieee80211_set_key_rx_seq(key, 0, &seq); 1905 } 1906 } 1907 1908 static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw, 1909 struct ieee80211_vif *vif, 1910 struct ieee80211_sta *sta, 1911 struct ieee80211_key_conf *key, 1912 void *_data) 1913 { 1914 struct iwl_mvm_d3_gtk_iter_data *data = _data; 1915 struct iwl_wowlan_status_data *status = data->status; 1916 s8 keyidx; 1917 int link_id = vif->active_links ? __ffs(vif->active_links) : -1; 1918 1919 if (link_id >= 0 && key->link_id >= 0 && link_id != key->link_id) 1920 return; 1921 1922 if (data->unhandled_cipher) 1923 return; 1924 1925 switch (key->cipher) { 1926 case WLAN_CIPHER_SUITE_WEP40: 1927 case WLAN_CIPHER_SUITE_WEP104: 1928 /* ignore WEP completely, nothing to do */ 1929 return; 1930 case WLAN_CIPHER_SUITE_CCMP: 1931 case WLAN_CIPHER_SUITE_GCMP: 1932 case WLAN_CIPHER_SUITE_GCMP_256: 1933 if (sta) { 1934 atomic64_set(&key->tx_pn, status->ptk.aes.tx_pn); 1935 iwl_mvm_set_aes_ptk_rx_seq(data->mvm, status, sta, key); 1936 return; 1937 } 1938 fallthrough; 1939 case WLAN_CIPHER_SUITE_TKIP: 1940 if (sta) { 1941 atomic64_set(&key->tx_pn, status->ptk.tkip.tx_pn); 1942 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.tkip.seq); 1943 return; 1944 } 1945 keyidx = key->keyidx; 1946 /* The current key is always sent by the FW, even if it wasn't 1947 * rekeyed during D3. 1948 * We remove an existing key if it has the same index as 1949 * a new key 1950 */ 1951 if (status->num_of_gtk_rekeys && 1952 ((status->gtk[0].len && keyidx == status->gtk[0].id) || 1953 (status->gtk[1].len && keyidx == status->gtk[1].id))) { 1954 ieee80211_remove_key(key); 1955 } else { 1956 iwl_mvm_set_key_rx_seq(key, data->status, false); 1957 } 1958 break; 1959 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 1960 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 1961 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 1962 case WLAN_CIPHER_SUITE_AES_CMAC: 1963 if (key->keyidx == 4 || key->keyidx == 5) { 1964 iwl_mvm_d3_update_igtk_bigtk(status, key, 1965 &status->igtk); 1966 } 1967 if (key->keyidx == 6 || key->keyidx == 7) { 1968 u8 idx = key->keyidx == status->bigtk[1].id; 1969 1970 iwl_mvm_d3_update_igtk_bigtk(status, key, 1971 &status->bigtk[idx]); 1972 } 1973 } 1974 } 1975 1976 struct iwl_mvm_d3_mlo_old_keys { 1977 u32 cipher[IEEE80211_MLD_MAX_NUM_LINKS][WOWLAN_MLO_GTK_KEY_NUM_TYPES]; 1978 struct ieee80211_key_conf *key[IEEE80211_MLD_MAX_NUM_LINKS][8]; 1979 }; 1980 1981 static void iwl_mvm_mlo_key_ciphers(struct ieee80211_hw *hw, 1982 struct ieee80211_vif *vif, 1983 struct ieee80211_sta *sta, 1984 struct ieee80211_key_conf *key, 1985 void *data) 1986 { 1987 struct iwl_mvm_d3_mlo_old_keys *old_keys = data; 1988 enum iwl_wowlan_mlo_gtk_type key_type; 1989 1990 if (key->link_id < 0) 1991 return; 1992 1993 if (WARN_ON(key->link_id >= IEEE80211_MLD_MAX_NUM_LINKS || 1994 key->keyidx >= 8)) 1995 return; 1996 1997 if (WARN_ON(old_keys->key[key->link_id][key->keyidx])) 1998 return; 1999 2000 switch (key->cipher) { 2001 case WLAN_CIPHER_SUITE_CCMP: 2002 case WLAN_CIPHER_SUITE_GCMP: 2003 case WLAN_CIPHER_SUITE_GCMP_256: 2004 key_type = WOWLAN_MLO_GTK_KEY_TYPE_GTK; 2005 break; 2006 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 2007 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 2008 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 2009 case WLAN_CIPHER_SUITE_AES_CMAC: 2010 if (key->keyidx == 4 || key->keyidx == 5) { 2011 key_type = WOWLAN_MLO_GTK_KEY_TYPE_IGTK; 2012 break; 2013 } else if (key->keyidx == 6 || key->keyidx == 7) { 2014 key_type = WOWLAN_MLO_GTK_KEY_TYPE_BIGTK; 2015 break; 2016 } 2017 return; 2018 default: 2019 /* ignore WEP/TKIP or unknown ciphers */ 2020 return; 2021 } 2022 2023 old_keys->cipher[key->link_id][key_type] = key->cipher; 2024 old_keys->key[key->link_id][key->keyidx] = key; 2025 } 2026 2027 static bool iwl_mvm_mlo_gtk_rekey(struct iwl_wowlan_status_data *status, 2028 struct ieee80211_vif *vif, 2029 struct iwl_mvm *mvm) 2030 { 2031 int i; 2032 struct iwl_mvm_d3_mlo_old_keys *old_keys; 2033 bool ret = true; 2034 2035 IWL_DEBUG_WOWLAN(mvm, "Num of MLO Keys: %d\n", status->num_mlo_keys); 2036 if (!status->num_mlo_keys) 2037 return true; 2038 2039 old_keys = kzalloc(sizeof(*old_keys), GFP_KERNEL); 2040 if (!old_keys) 2041 return false; 2042 2043 /* find the cipher for each mlo key */ 2044 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_mlo_key_ciphers, old_keys); 2045 2046 for (i = 0; i < status->num_mlo_keys; i++) { 2047 struct iwl_wowlan_mlo_gtk *mlo_key = &status->mlo_keys[i]; 2048 struct ieee80211_key_conf *key, *old_key; 2049 struct ieee80211_key_seq seq; 2050 struct { 2051 struct ieee80211_key_conf conf; 2052 u8 key[32]; 2053 } conf = {}; 2054 u16 flags = le16_to_cpu(mlo_key->flags); 2055 int j, link_id, key_id, key_type; 2056 2057 link_id = u16_get_bits(flags, WOWLAN_MLO_GTK_FLAG_LINK_ID_MSK); 2058 key_id = u16_get_bits(flags, WOWLAN_MLO_GTK_FLAG_KEY_ID_MSK); 2059 key_type = u16_get_bits(flags, 2060 WOWLAN_MLO_GTK_FLAG_KEY_TYPE_MSK); 2061 2062 if (!(vif->valid_links & BIT(link_id))) 2063 continue; 2064 2065 if (WARN_ON(link_id >= IEEE80211_MLD_MAX_NUM_LINKS || 2066 key_id >= 8 || 2067 key_type >= WOWLAN_MLO_GTK_KEY_NUM_TYPES)) 2068 continue; 2069 2070 conf.conf.cipher = old_keys->cipher[link_id][key_type]; 2071 /* WARN_ON? */ 2072 if (!conf.conf.cipher) 2073 continue; 2074 2075 conf.conf.keylen = 0; 2076 switch (conf.conf.cipher) { 2077 case WLAN_CIPHER_SUITE_CCMP: 2078 case WLAN_CIPHER_SUITE_GCMP: 2079 conf.conf.keylen = WLAN_KEY_LEN_CCMP; 2080 break; 2081 case WLAN_CIPHER_SUITE_GCMP_256: 2082 conf.conf.keylen = WLAN_KEY_LEN_GCMP_256; 2083 break; 2084 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 2085 conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_128; 2086 break; 2087 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 2088 conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_256; 2089 break; 2090 case WLAN_CIPHER_SUITE_AES_CMAC: 2091 conf.conf.keylen = WLAN_KEY_LEN_AES_CMAC; 2092 break; 2093 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 2094 conf.conf.keylen = WLAN_KEY_LEN_BIP_CMAC_256; 2095 break; 2096 } 2097 2098 if (WARN_ON(!conf.conf.keylen || 2099 conf.conf.keylen > sizeof(conf.key))) 2100 continue; 2101 2102 memcpy(conf.conf.key, mlo_key->key, conf.conf.keylen); 2103 conf.conf.keyidx = key_id; 2104 2105 old_key = old_keys->key[link_id][key_id]; 2106 if (old_key) { 2107 IWL_DEBUG_WOWLAN(mvm, 2108 "Remove MLO key id %d, link id %d\n", 2109 key_id, link_id); 2110 ieee80211_remove_key(old_key); 2111 } 2112 2113 IWL_DEBUG_WOWLAN(mvm, "Add MLO key id %d, link id %d\n", 2114 key_id, link_id); 2115 key = ieee80211_gtk_rekey_add(vif, &conf.conf, link_id); 2116 if (WARN_ON(IS_ERR(key))) { 2117 ret = false; 2118 goto out; 2119 } 2120 2121 /* 2122 * mac80211 expects the pn in big-endian 2123 * also note that seq is a union of all cipher types 2124 * (ccmp, gcmp, cmac, gmac), and they all have the same 2125 * pn field (of length 6) so just copy it to ccmp.pn. 2126 */ 2127 for (j = 5; j >= 0; j--) 2128 seq.ccmp.pn[5 - j] = mlo_key->pn[j]; 2129 2130 /* group keys are non-QoS and use TID 0 */ 2131 ieee80211_set_key_rx_seq(key, 0, &seq); 2132 } 2133 2134 out: 2135 kfree(old_keys); 2136 return ret; 2137 } 2138 2139 static bool iwl_mvm_gtk_rekey(struct iwl_wowlan_status_data *status, 2140 struct ieee80211_vif *vif, 2141 struct iwl_mvm *mvm, u32 gtk_cipher) 2142 { 2143 int i, j; 2144 struct ieee80211_key_conf *key; 2145 struct { 2146 struct ieee80211_key_conf conf; 2147 u8 key[32]; 2148 } conf = { 2149 .conf.cipher = gtk_cipher, 2150 }; 2151 int link_id = vif->active_links ? __ffs(vif->active_links) : -1; 2152 2153 BUILD_BUG_ON(WLAN_KEY_LEN_CCMP != WLAN_KEY_LEN_GCMP); 2154 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_CCMP); 2155 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_GCMP_256); 2156 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_TKIP); 2157 BUILD_BUG_ON(sizeof(conf.key) < sizeof(status->gtk[0].key)); 2158 2159 switch (gtk_cipher) { 2160 case WLAN_CIPHER_SUITE_CCMP: 2161 case WLAN_CIPHER_SUITE_GCMP: 2162 conf.conf.keylen = WLAN_KEY_LEN_CCMP; 2163 break; 2164 case WLAN_CIPHER_SUITE_GCMP_256: 2165 conf.conf.keylen = WLAN_KEY_LEN_GCMP_256; 2166 break; 2167 case WLAN_CIPHER_SUITE_TKIP: 2168 conf.conf.keylen = WLAN_KEY_LEN_TKIP; 2169 break; 2170 default: 2171 WARN_ON(1); 2172 } 2173 2174 for (i = 0; i < ARRAY_SIZE(status->gtk); i++) { 2175 if (!status->gtk[i].len) 2176 continue; 2177 2178 conf.conf.keyidx = status->gtk[i].id; 2179 IWL_DEBUG_WOWLAN(mvm, 2180 "Received from FW GTK cipher %d, key index %d\n", 2181 conf.conf.cipher, conf.conf.keyidx); 2182 memcpy(conf.conf.key, status->gtk[i].key, 2183 sizeof(status->gtk[i].key)); 2184 2185 key = ieee80211_gtk_rekey_add(vif, &conf.conf, link_id); 2186 if (IS_ERR(key)) 2187 return false; 2188 2189 for (j = 0; j < ARRAY_SIZE(status->gtk_seq); j++) { 2190 if (!status->gtk_seq[j].valid || 2191 status->gtk_seq[j].key_id != key->keyidx) 2192 continue; 2193 iwl_mvm_set_key_rx_seq_idx(key, status, j); 2194 break; 2195 } 2196 WARN_ON(j == ARRAY_SIZE(status->gtk_seq)); 2197 } 2198 2199 return true; 2200 } 2201 2202 static bool 2203 iwl_mvm_d3_igtk_bigtk_rekey_add(struct iwl_wowlan_status_data *status, 2204 struct ieee80211_vif *vif, u32 cipher, 2205 struct iwl_multicast_key_data *key_data) 2206 { 2207 struct ieee80211_key_conf *key_config; 2208 struct { 2209 struct ieee80211_key_conf conf; 2210 u8 key[WOWLAN_KEY_MAX_SIZE]; 2211 } conf = { 2212 .conf.cipher = cipher, 2213 .conf.keyidx = key_data->id, 2214 }; 2215 struct ieee80211_key_seq seq; 2216 int link_id = vif->active_links ? __ffs(vif->active_links) : -1; 2217 2218 if (!key_data->len) 2219 return true; 2220 2221 iwl_mvm_d3_set_igtk_bigtk_ipn(key_data, &seq, conf.conf.cipher); 2222 2223 switch (cipher) { 2224 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 2225 conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_128; 2226 break; 2227 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 2228 conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_256; 2229 break; 2230 case WLAN_CIPHER_SUITE_AES_CMAC: 2231 conf.conf.keylen = WLAN_KEY_LEN_AES_CMAC; 2232 break; 2233 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 2234 conf.conf.keylen = WLAN_KEY_LEN_BIP_CMAC_256; 2235 break; 2236 default: 2237 WARN_ON(1); 2238 } 2239 BUILD_BUG_ON(sizeof(conf.key) < sizeof(key_data->key)); 2240 memcpy(conf.conf.key, key_data->key, conf.conf.keylen); 2241 2242 key_config = ieee80211_gtk_rekey_add(vif, &conf.conf, link_id); 2243 if (IS_ERR(key_config)) 2244 return false; 2245 ieee80211_set_key_rx_seq(key_config, 0, &seq); 2246 2247 if (key_config->keyidx == 4 || key_config->keyidx == 5) { 2248 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2249 struct iwl_mvm_vif_link_info *mvm_link; 2250 2251 link_id = link_id < 0 ? 0 : link_id; 2252 mvm_link = mvmvif->link[link_id]; 2253 mvm_link->igtk = key_config; 2254 } 2255 2256 return true; 2257 } 2258 2259 static int iwl_mvm_lookup_wowlan_status_ver(struct iwl_mvm *mvm) 2260 { 2261 u8 notif_ver; 2262 2263 if (!fw_has_api(&mvm->fw->ucode_capa, 2264 IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL)) 2265 return 6; 2266 2267 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */ 2268 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP, 2269 WOWLAN_GET_STATUSES, 0); 2270 if (!notif_ver) 2271 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, 2272 WOWLAN_GET_STATUSES, 7); 2273 2274 return notif_ver; 2275 } 2276 2277 static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm, 2278 struct ieee80211_vif *vif, 2279 struct iwl_wowlan_status_data *status) 2280 { 2281 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2282 struct iwl_mvm_d3_gtk_iter_data gtkdata = { 2283 .mvm = mvm, 2284 .status = status, 2285 }; 2286 int i; 2287 u32 disconnection_reasons = 2288 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 2289 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH; 2290 2291 if (!status || !vif->bss_conf.bssid) 2292 return false; 2293 2294 if (iwl_mvm_lookup_wowlan_status_ver(mvm) > 6 || 2295 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2296 WOWLAN_INFO_NOTIFICATION, 2297 0)) 2298 gtkdata.igtk_support = true; 2299 2300 if (iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2301 WOWLAN_INFO_NOTIFICATION, 2302 0) >= 3) 2303 gtkdata.bigtk_support = true; 2304 2305 /* find last GTK that we used initially, if any */ 2306 ieee80211_iter_keys(mvm->hw, vif, 2307 iwl_mvm_d3_find_last_keys, >kdata); 2308 /* not trying to keep connections with MFP/unhandled ciphers */ 2309 if (gtkdata.unhandled_cipher) 2310 return false; 2311 if (!gtkdata.num_keys) 2312 goto out; 2313 2314 /* 2315 * invalidate all other GTKs that might still exist and update 2316 * the one that we used 2317 */ 2318 ieee80211_iter_keys(mvm->hw, vif, 2319 iwl_mvm_d3_update_keys, >kdata); 2320 2321 if (status->num_of_gtk_rekeys) { 2322 __be64 replay_ctr = cpu_to_be64(status->replay_ctr); 2323 2324 IWL_DEBUG_WOWLAN(mvm, "num of GTK rekeying %d\n", 2325 status->num_of_gtk_rekeys); 2326 2327 if (!iwl_mvm_gtk_rekey(status, vif, mvm, gtkdata.gtk_cipher)) 2328 return false; 2329 2330 if (!iwl_mvm_d3_igtk_bigtk_rekey_add(status, vif, 2331 gtkdata.igtk_cipher, 2332 &status->igtk)) 2333 return false; 2334 2335 for (i = 0; i < ARRAY_SIZE(status->bigtk); i++) { 2336 if (!iwl_mvm_d3_igtk_bigtk_rekey_add(status, vif, 2337 gtkdata.bigtk_cipher, 2338 &status->bigtk[i])) 2339 return false; 2340 } 2341 2342 if (!iwl_mvm_mlo_gtk_rekey(status, vif, mvm)) 2343 return false; 2344 2345 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid, 2346 (void *)&replay_ctr, GFP_KERNEL); 2347 } 2348 2349 out: 2350 if (iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP, 2351 WOWLAN_GET_STATUSES, 0) < 10) { 2352 mvmvif->seqno_valid = true; 2353 /* +0x10 because the set API expects next-to-use, not last-used */ 2354 mvmvif->seqno = status->non_qos_seq_ctr + 0x10; 2355 } 2356 2357 if (status->wakeup_reasons & disconnection_reasons) 2358 return false; 2359 2360 return true; 2361 } 2362 2363 static void iwl_mvm_convert_gtk_v2(struct iwl_wowlan_status_data *status, 2364 struct iwl_wowlan_gtk_status_v2 *data) 2365 { 2366 BUILD_BUG_ON(sizeof(status->gtk[0].key) < sizeof(data->key)); 2367 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY + 2368 sizeof(data->tkip_mic_key) > 2369 sizeof(status->gtk[0].key)); 2370 2371 status->gtk[0].len = data->key_len; 2372 status->gtk[0].flags = data->key_flags; 2373 2374 memcpy(status->gtk[0].key, data->key, sizeof(data->key)); 2375 2376 /* if it's as long as the TKIP encryption key, copy MIC key */ 2377 if (status->gtk[0].len == NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY) 2378 memcpy(status->gtk[0].key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 2379 data->tkip_mic_key, sizeof(data->tkip_mic_key)); 2380 } 2381 2382 static void iwl_mvm_convert_gtk_v3(struct iwl_wowlan_status_data *status, 2383 struct iwl_wowlan_gtk_status_v3 *data) 2384 { 2385 int data_idx, status_idx = 0; 2386 2387 BUILD_BUG_ON(sizeof(status->gtk[0].key) < sizeof(data[0].key)); 2388 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY + 2389 sizeof(data[0].tkip_mic_key) > 2390 sizeof(status->gtk[0].key)); 2391 BUILD_BUG_ON(ARRAY_SIZE(status->gtk) < WOWLAN_GTK_KEYS_NUM); 2392 for (data_idx = 0; data_idx < ARRAY_SIZE(status->gtk); data_idx++) { 2393 if (!(data[data_idx].key_len)) 2394 continue; 2395 status->gtk[status_idx].len = data[data_idx].key_len; 2396 status->gtk[status_idx].flags = data[data_idx].key_flags; 2397 status->gtk[status_idx].id = status->gtk[status_idx].flags & 2398 IWL_WOWLAN_GTK_IDX_MASK; 2399 2400 memcpy(status->gtk[status_idx].key, data[data_idx].key, 2401 sizeof(data[data_idx].key)); 2402 2403 /* if it's as long as the TKIP encryption key, copy MIC key */ 2404 if (status->gtk[status_idx].len == 2405 NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY) 2406 memcpy(status->gtk[status_idx].key + 2407 NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 2408 data[data_idx].tkip_mic_key, 2409 sizeof(data[data_idx].tkip_mic_key)); 2410 status_idx++; 2411 } 2412 } 2413 2414 static void iwl_mvm_convert_igtk(struct iwl_wowlan_status_data *status, 2415 struct iwl_wowlan_igtk_status *data) 2416 { 2417 int i; 2418 2419 BUILD_BUG_ON(sizeof(status->igtk.key) < sizeof(data->key)); 2420 BUILD_BUG_ON(sizeof(status->igtk.ipn) != sizeof(data->ipn)); 2421 2422 if (!data->key_len) 2423 return; 2424 2425 status->igtk.len = data->key_len; 2426 status->igtk.flags = data->key_flags; 2427 status->igtk.id = u32_get_bits(data->key_flags, 2428 IWL_WOWLAN_IGTK_BIGTK_IDX_MASK) 2429 + WOWLAN_IGTK_MIN_INDEX; 2430 2431 memcpy(status->igtk.key, data->key, sizeof(data->key)); 2432 2433 /* mac80211 expects big endian for memcmp() to work, convert */ 2434 for (i = 0; i < sizeof(data->ipn); i++) 2435 status->igtk.ipn[i] = data->ipn[sizeof(data->ipn) - i - 1]; 2436 } 2437 2438 static void iwl_mvm_convert_bigtk(struct iwl_wowlan_status_data *status, 2439 const struct iwl_wowlan_igtk_status *data) 2440 { 2441 int data_idx, status_idx = 0; 2442 2443 BUILD_BUG_ON(ARRAY_SIZE(status->bigtk) < WOWLAN_BIGTK_KEYS_NUM); 2444 2445 for (data_idx = 0; data_idx < WOWLAN_BIGTK_KEYS_NUM; data_idx++) { 2446 if (!data[data_idx].key_len) 2447 continue; 2448 2449 status->bigtk[status_idx].len = data[data_idx].key_len; 2450 status->bigtk[status_idx].flags = data[data_idx].key_flags; 2451 status->bigtk[status_idx].id = 2452 u32_get_bits(data[data_idx].key_flags, 2453 IWL_WOWLAN_IGTK_BIGTK_IDX_MASK) 2454 + WOWLAN_BIGTK_MIN_INDEX; 2455 2456 BUILD_BUG_ON(sizeof(status->bigtk[status_idx].key) < 2457 sizeof(data[data_idx].key)); 2458 BUILD_BUG_ON(sizeof(status->bigtk[status_idx].ipn) < 2459 sizeof(data[data_idx].ipn)); 2460 2461 memcpy(status->bigtk[status_idx].key, data[data_idx].key, 2462 sizeof(data[data_idx].key)); 2463 memcpy(status->bigtk[status_idx].ipn, data[data_idx].ipn, 2464 sizeof(data[data_idx].ipn)); 2465 status_idx++; 2466 } 2467 } 2468 2469 static void iwl_mvm_parse_wowlan_info_notif(struct iwl_mvm *mvm, 2470 struct iwl_wowlan_info_notif *data, 2471 struct iwl_wowlan_status_data *status, 2472 u32 len, bool has_mlo_keys) 2473 { 2474 u32 i; 2475 u32 expected_len = sizeof(*data); 2476 2477 if (!data) { 2478 IWL_ERR(mvm, "iwl_wowlan_info_notif data is NULL\n"); 2479 status = NULL; 2480 return; 2481 } 2482 2483 if (has_mlo_keys) 2484 expected_len += (data->num_mlo_link_keys * 2485 sizeof(status->mlo_keys[0])); 2486 2487 if (len < expected_len) { 2488 IWL_ERR(mvm, "Invalid WoWLAN info notification!\n"); 2489 status = NULL; 2490 return; 2491 } 2492 2493 iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc); 2494 iwl_mvm_convert_gtk_v3(status, data->gtk); 2495 iwl_mvm_convert_igtk(status, &data->igtk[0]); 2496 iwl_mvm_convert_bigtk(status, data->bigtk); 2497 status->replay_ctr = le64_to_cpu(data->replay_ctr); 2498 status->pattern_number = le16_to_cpu(data->pattern_number); 2499 for (i = 0; i < IWL_MAX_TID_COUNT; i++) 2500 status->qos_seq_ctr[i] = 2501 le16_to_cpu(data->qos_seq_ctr[i]); 2502 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); 2503 status->num_of_gtk_rekeys = 2504 le32_to_cpu(data->num_of_gtk_rekeys); 2505 status->received_beacons = le32_to_cpu(data->received_beacons); 2506 status->tid_tear_down = data->tid_tear_down; 2507 2508 if (has_mlo_keys && data->num_mlo_link_keys) { 2509 status->num_mlo_keys = data->num_mlo_link_keys; 2510 if (IWL_FW_CHECK(mvm, 2511 status->num_mlo_keys > WOWLAN_MAX_MLO_KEYS, 2512 "Too many mlo keys: %d, max %d\n", 2513 status->num_mlo_keys, WOWLAN_MAX_MLO_KEYS)) 2514 status->num_mlo_keys = WOWLAN_MAX_MLO_KEYS; 2515 memcpy(status->mlo_keys, data->mlo_gtks, 2516 status->num_mlo_keys * sizeof(status->mlo_keys[0])); 2517 } 2518 } 2519 2520 static void 2521 iwl_mvm_parse_wowlan_info_notif_v2(struct iwl_mvm *mvm, 2522 struct iwl_wowlan_info_notif_v2 *data, 2523 struct iwl_wowlan_status_data *status, 2524 u32 len) 2525 { 2526 u32 i; 2527 2528 if (!data) { 2529 IWL_ERR(mvm, "iwl_wowlan_info_notif data is NULL\n"); 2530 status = NULL; 2531 return; 2532 } 2533 2534 if (len < sizeof(*data)) { 2535 IWL_ERR(mvm, "Invalid WoWLAN info notification!\n"); 2536 status = NULL; 2537 return; 2538 } 2539 2540 iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc); 2541 iwl_mvm_convert_gtk_v3(status, data->gtk); 2542 iwl_mvm_convert_igtk(status, &data->igtk[0]); 2543 status->replay_ctr = le64_to_cpu(data->replay_ctr); 2544 status->pattern_number = le16_to_cpu(data->pattern_number); 2545 for (i = 0; i < IWL_MAX_TID_COUNT; i++) 2546 status->qos_seq_ctr[i] = 2547 le16_to_cpu(data->qos_seq_ctr[i]); 2548 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); 2549 status->num_of_gtk_rekeys = 2550 le32_to_cpu(data->num_of_gtk_rekeys); 2551 status->received_beacons = le32_to_cpu(data->received_beacons); 2552 status->tid_tear_down = data->tid_tear_down; 2553 } 2554 2555 /* Occasionally, templates would be nice. This is one of those times ... */ 2556 #define iwl_mvm_parse_wowlan_status_common(_ver) \ 2557 static struct iwl_wowlan_status_data * \ 2558 iwl_mvm_parse_wowlan_status_common_ ## _ver(struct iwl_mvm *mvm, \ 2559 struct iwl_wowlan_status_ ##_ver *data,\ 2560 int len) \ 2561 { \ 2562 struct iwl_wowlan_status_data *status; \ 2563 int data_size, i; \ 2564 \ 2565 if (len < sizeof(*data)) { \ 2566 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \ 2567 return NULL; \ 2568 } \ 2569 \ 2570 data_size = ALIGN(le32_to_cpu(data->wake_packet_bufsize), 4); \ 2571 if (len != sizeof(*data) + data_size) { \ 2572 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \ 2573 return NULL; \ 2574 } \ 2575 \ 2576 status = kzalloc(sizeof(*status), GFP_KERNEL); \ 2577 if (!status) \ 2578 return NULL; \ 2579 \ 2580 /* copy all the common fields */ \ 2581 status->replay_ctr = le64_to_cpu(data->replay_ctr); \ 2582 status->pattern_number = le16_to_cpu(data->pattern_number); \ 2583 status->non_qos_seq_ctr = le16_to_cpu(data->non_qos_seq_ctr); \ 2584 for (i = 0; i < 8; i++) \ 2585 status->qos_seq_ctr[i] = \ 2586 le16_to_cpu(data->qos_seq_ctr[i]); \ 2587 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); \ 2588 status->num_of_gtk_rekeys = \ 2589 le32_to_cpu(data->num_of_gtk_rekeys); \ 2590 status->received_beacons = le32_to_cpu(data->received_beacons); \ 2591 status->wake_packet_length = \ 2592 le32_to_cpu(data->wake_packet_length); \ 2593 status->wake_packet_bufsize = \ 2594 le32_to_cpu(data->wake_packet_bufsize); \ 2595 if (status->wake_packet_bufsize) { \ 2596 status->wake_packet = \ 2597 kmemdup(data->wake_packet, \ 2598 status->wake_packet_bufsize, \ 2599 GFP_KERNEL); \ 2600 if (!status->wake_packet) { \ 2601 kfree(status); \ 2602 return NULL; \ 2603 } \ 2604 } else { \ 2605 status->wake_packet = NULL; \ 2606 } \ 2607 \ 2608 return status; \ 2609 } 2610 2611 iwl_mvm_parse_wowlan_status_common(v6) 2612 iwl_mvm_parse_wowlan_status_common(v7) 2613 iwl_mvm_parse_wowlan_status_common(v9) 2614 iwl_mvm_parse_wowlan_status_common(v12) 2615 2616 static struct iwl_wowlan_status_data * 2617 iwl_mvm_send_wowlan_get_status(struct iwl_mvm *mvm, u8 sta_id) 2618 { 2619 struct iwl_wowlan_status_data *status; 2620 struct iwl_wowlan_get_status_cmd get_status_cmd = { 2621 .sta_id = cpu_to_le32(sta_id), 2622 }; 2623 struct iwl_host_cmd cmd = { 2624 .id = WOWLAN_GET_STATUSES, 2625 .flags = CMD_WANT_SKB, 2626 .data = { &get_status_cmd, }, 2627 .len = { sizeof(get_status_cmd), }, 2628 }; 2629 int ret, len; 2630 u8 notif_ver; 2631 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id, 2632 IWL_FW_CMD_VER_UNKNOWN); 2633 2634 if (cmd_ver == IWL_FW_CMD_VER_UNKNOWN) 2635 cmd.len[0] = 0; 2636 2637 lockdep_assert_held(&mvm->mutex); 2638 2639 ret = iwl_mvm_send_cmd(mvm, &cmd); 2640 if (ret) { 2641 IWL_ERR(mvm, "failed to query wakeup status (%d)\n", ret); 2642 return ERR_PTR(ret); 2643 } 2644 2645 len = iwl_rx_packet_payload_len(cmd.resp_pkt); 2646 2647 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */ 2648 notif_ver = iwl_mvm_lookup_wowlan_status_ver(mvm); 2649 2650 if (notif_ver < 7) { 2651 struct iwl_wowlan_status_v6 *v6 = (void *)cmd.resp_pkt->data; 2652 2653 status = iwl_mvm_parse_wowlan_status_common_v6(mvm, v6, len); 2654 if (!status) 2655 goto out_free_resp; 2656 2657 BUILD_BUG_ON(sizeof(v6->gtk.decrypt_key) > 2658 sizeof(status->gtk[0].key)); 2659 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY + 2660 sizeof(v6->gtk.tkip_mic_key) > 2661 sizeof(status->gtk[0].key)); 2662 2663 /* copy GTK info to the right place */ 2664 memcpy(status->gtk[0].key, v6->gtk.decrypt_key, 2665 sizeof(v6->gtk.decrypt_key)); 2666 memcpy(status->gtk[0].key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 2667 v6->gtk.tkip_mic_key, 2668 sizeof(v6->gtk.tkip_mic_key)); 2669 2670 iwl_mvm_convert_key_counters(status, &v6->gtk.rsc.all_tsc_rsc); 2671 2672 /* hardcode the key length to 16 since v6 only supports 16 */ 2673 status->gtk[0].len = 16; 2674 2675 /* 2676 * The key index only uses 2 bits (values 0 to 3) and 2677 * we always set bit 7 which means this is the 2678 * currently used key. 2679 */ 2680 status->gtk[0].flags = v6->gtk.key_index | BIT(7); 2681 } else if (notif_ver == 7) { 2682 struct iwl_wowlan_status_v7 *v7 = (void *)cmd.resp_pkt->data; 2683 2684 status = iwl_mvm_parse_wowlan_status_common_v7(mvm, v7, len); 2685 if (!status) 2686 goto out_free_resp; 2687 2688 iwl_mvm_convert_key_counters(status, &v7->gtk[0].rsc.all_tsc_rsc); 2689 iwl_mvm_convert_gtk_v2(status, &v7->gtk[0]); 2690 iwl_mvm_convert_igtk(status, &v7->igtk[0]); 2691 } else if (notif_ver == 9 || notif_ver == 10 || notif_ver == 11) { 2692 struct iwl_wowlan_status_v9 *v9 = (void *)cmd.resp_pkt->data; 2693 2694 /* these three command versions have same layout and size, the 2695 * difference is only in a few not used (reserved) fields. 2696 */ 2697 status = iwl_mvm_parse_wowlan_status_common_v9(mvm, v9, len); 2698 if (!status) 2699 goto out_free_resp; 2700 2701 iwl_mvm_convert_key_counters(status, &v9->gtk[0].rsc.all_tsc_rsc); 2702 iwl_mvm_convert_gtk_v2(status, &v9->gtk[0]); 2703 iwl_mvm_convert_igtk(status, &v9->igtk[0]); 2704 2705 status->tid_tear_down = v9->tid_tear_down; 2706 } else if (notif_ver == 12) { 2707 struct iwl_wowlan_status_v12 *v12 = (void *)cmd.resp_pkt->data; 2708 2709 status = iwl_mvm_parse_wowlan_status_common_v12(mvm, v12, len); 2710 if (!status) 2711 goto out_free_resp; 2712 2713 iwl_mvm_convert_key_counters_v5(status, &v12->gtk[0].sc); 2714 iwl_mvm_convert_gtk_v3(status, v12->gtk); 2715 iwl_mvm_convert_igtk(status, &v12->igtk[0]); 2716 2717 status->tid_tear_down = v12->tid_tear_down; 2718 } else { 2719 IWL_ERR(mvm, 2720 "Firmware advertises unknown WoWLAN status response %d!\n", 2721 notif_ver); 2722 status = NULL; 2723 } 2724 2725 out_free_resp: 2726 iwl_free_resp(&cmd); 2727 return status; 2728 } 2729 2730 /* releases the MVM mutex */ 2731 static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm, 2732 struct ieee80211_vif *vif, 2733 struct iwl_wowlan_status_data *status) 2734 { 2735 int i; 2736 bool keep = false; 2737 struct iwl_mvm_sta *mvm_ap_sta; 2738 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2739 int link_id = vif->active_links ? __ffs(vif->active_links) : 0; 2740 struct iwl_mvm_vif_link_info *mvm_link = mvmvif->link[link_id]; 2741 2742 if (WARN_ON(!mvm_link)) 2743 goto out_unlock; 2744 2745 if (!status) 2746 goto out_unlock; 2747 2748 IWL_DEBUG_WOWLAN(mvm, "wakeup reason 0x%x\n", 2749 status->wakeup_reasons); 2750 2751 mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, mvm_link->ap_sta_id); 2752 if (!mvm_ap_sta) 2753 goto out_unlock; 2754 2755 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 2756 u16 seq = status->qos_seq_ctr[i]; 2757 /* firmware stores last-used value, we store next value */ 2758 seq += 0x10; 2759 mvm_ap_sta->tid_data[i].seq_number = seq; 2760 } 2761 2762 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000) { 2763 i = mvm->offload_tid; 2764 iwl_trans_set_q_ptrs(mvm->trans, 2765 mvm_ap_sta->tid_data[i].txq_id, 2766 mvm_ap_sta->tid_data[i].seq_number >> 4); 2767 } 2768 2769 iwl_mvm_report_wakeup_reasons(mvm, vif, status); 2770 2771 keep = iwl_mvm_setup_connection_keep(mvm, vif, status); 2772 out_unlock: 2773 mutex_unlock(&mvm->mutex); 2774 return keep; 2775 } 2776 2777 #define ND_QUERY_BUF_LEN (sizeof(struct iwl_scan_offload_profile_match) * \ 2778 IWL_SCAN_MAX_PROFILES) 2779 2780 struct iwl_mvm_nd_results { 2781 u32 matched_profiles; 2782 u8 matches[ND_QUERY_BUF_LEN]; 2783 }; 2784 2785 static int 2786 iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm, 2787 struct iwl_mvm_nd_results *results) 2788 { 2789 struct iwl_scan_offload_match_info *query; 2790 struct iwl_host_cmd cmd = { 2791 .id = SCAN_OFFLOAD_PROFILES_QUERY_CMD, 2792 .flags = CMD_WANT_SKB, 2793 }; 2794 int ret, len; 2795 size_t query_len, matches_len; 2796 int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw); 2797 2798 ret = iwl_mvm_send_cmd(mvm, &cmd); 2799 if (ret) { 2800 IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret); 2801 return ret; 2802 } 2803 2804 if (fw_has_api(&mvm->fw->ucode_capa, 2805 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2806 query_len = sizeof(struct iwl_scan_offload_match_info); 2807 matches_len = sizeof(struct iwl_scan_offload_profile_match) * 2808 max_profiles; 2809 } else { 2810 query_len = sizeof(struct iwl_scan_offload_profiles_query_v1); 2811 matches_len = sizeof(struct iwl_scan_offload_profile_match_v1) * 2812 max_profiles; 2813 } 2814 2815 len = iwl_rx_packet_payload_len(cmd.resp_pkt); 2816 if (len < query_len) { 2817 IWL_ERR(mvm, "Invalid scan offload profiles query response!\n"); 2818 ret = -EIO; 2819 goto out_free_resp; 2820 } 2821 2822 query = (void *)cmd.resp_pkt->data; 2823 2824 results->matched_profiles = le32_to_cpu(query->matched_profiles); 2825 memcpy(results->matches, query->matches, matches_len); 2826 2827 #ifdef CONFIG_IWLWIFI_DEBUGFS 2828 mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done); 2829 #endif 2830 2831 out_free_resp: 2832 iwl_free_resp(&cmd); 2833 return ret; 2834 } 2835 2836 static int iwl_mvm_query_num_match_chans(struct iwl_mvm *mvm, 2837 struct iwl_mvm_nd_results *results, 2838 int idx) 2839 { 2840 int n_chans = 0, i; 2841 2842 if (fw_has_api(&mvm->fw->ucode_capa, 2843 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2844 struct iwl_scan_offload_profile_match *matches = 2845 (void *)results->matches; 2846 2847 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; i++) 2848 n_chans += hweight8(matches[idx].matching_channels[i]); 2849 } else { 2850 struct iwl_scan_offload_profile_match_v1 *matches = 2851 (void *)results->matches; 2852 2853 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1; i++) 2854 n_chans += hweight8(matches[idx].matching_channels[i]); 2855 } 2856 2857 return n_chans; 2858 } 2859 2860 static void iwl_mvm_query_set_freqs(struct iwl_mvm *mvm, 2861 struct iwl_mvm_nd_results *results, 2862 struct cfg80211_wowlan_nd_match *match, 2863 int idx) 2864 { 2865 int i; 2866 2867 if (fw_has_api(&mvm->fw->ucode_capa, 2868 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2869 struct iwl_scan_offload_profile_match *matches = 2870 (void *)results->matches; 2871 2872 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; i++) 2873 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8))) 2874 match->channels[match->n_channels++] = 2875 mvm->nd_channels[i]->center_freq; 2876 } else { 2877 struct iwl_scan_offload_profile_match_v1 *matches = 2878 (void *)results->matches; 2879 2880 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1 * 8; i++) 2881 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8))) 2882 match->channels[match->n_channels++] = 2883 mvm->nd_channels[i]->center_freq; 2884 } 2885 } 2886 2887 /** 2888 * enum iwl_d3_notif - d3 notifications 2889 * @IWL_D3_NOTIF_WOWLAN_INFO: WOWLAN_INFO_NOTIF was received 2890 * @IWL_D3_NOTIF_WOWLAN_WAKE_PKT: WOWLAN_WAKE_PKT_NOTIF was received 2891 * @IWL_D3_NOTIF_PROT_OFFLOAD: PROT_OFFLOAD_NOTIF was received 2892 * @IWL_D3_ND_MATCH_INFO: OFFLOAD_MATCH_INFO_NOTIF was received 2893 * @IWL_D3_NOTIF_D3_END_NOTIF: D3_END_NOTIF was received 2894 */ 2895 enum iwl_d3_notif { 2896 IWL_D3_NOTIF_WOWLAN_INFO = BIT(0), 2897 IWL_D3_NOTIF_WOWLAN_WAKE_PKT = BIT(1), 2898 IWL_D3_NOTIF_PROT_OFFLOAD = BIT(2), 2899 IWL_D3_ND_MATCH_INFO = BIT(3), 2900 IWL_D3_NOTIF_D3_END_NOTIF = BIT(4) 2901 }; 2902 2903 /* manage d3 resume data */ 2904 struct iwl_d3_data { 2905 struct iwl_wowlan_status_data *status; 2906 bool test; 2907 u32 d3_end_flags; 2908 u32 notif_expected; /* bitmap - see &enum iwl_d3_notif */ 2909 u32 notif_received; /* bitmap - see &enum iwl_d3_notif */ 2910 struct iwl_mvm_nd_results *nd_results; 2911 bool nd_results_valid; 2912 }; 2913 2914 static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm, 2915 struct ieee80211_vif *vif, 2916 struct iwl_d3_data *d3_data) 2917 { 2918 struct cfg80211_wowlan_nd_info *net_detect = NULL; 2919 struct cfg80211_wowlan_wakeup wakeup = { 2920 .pattern_idx = -1, 2921 }; 2922 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; 2923 unsigned long matched_profiles; 2924 u32 reasons = 0; 2925 int i, n_matches, ret; 2926 2927 if (WARN_ON(!d3_data || !d3_data->status)) 2928 goto out; 2929 2930 reasons = d3_data->status->wakeup_reasons; 2931 2932 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 2933 wakeup.rfkill_release = true; 2934 2935 if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) 2936 goto out; 2937 2938 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2939 WOWLAN_INFO_NOTIFICATION, 0)) { 2940 IWL_INFO(mvm, "Query FW for ND results\n"); 2941 ret = iwl_mvm_netdetect_query_results(mvm, d3_data->nd_results); 2942 2943 } else { 2944 IWL_INFO(mvm, "Notification based ND results\n"); 2945 ret = d3_data->nd_results_valid ? 0 : -1; 2946 } 2947 2948 if (ret || !d3_data->nd_results->matched_profiles) { 2949 wakeup_report = NULL; 2950 goto out; 2951 } 2952 2953 matched_profiles = d3_data->nd_results->matched_profiles; 2954 if (mvm->n_nd_match_sets) { 2955 n_matches = hweight_long(matched_profiles); 2956 } else { 2957 IWL_ERR(mvm, "no net detect match information available\n"); 2958 n_matches = 0; 2959 } 2960 2961 net_detect = kzalloc(struct_size(net_detect, matches, n_matches), 2962 GFP_KERNEL); 2963 if (!net_detect || !n_matches) 2964 goto out_report_nd; 2965 2966 for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) { 2967 struct cfg80211_wowlan_nd_match *match; 2968 int idx, n_channels = 0; 2969 2970 n_channels = iwl_mvm_query_num_match_chans(mvm, 2971 d3_data->nd_results, 2972 i); 2973 2974 match = kzalloc(struct_size(match, channels, n_channels), 2975 GFP_KERNEL); 2976 if (!match) 2977 goto out_report_nd; 2978 2979 net_detect->matches[net_detect->n_matches++] = match; 2980 2981 /* We inverted the order of the SSIDs in the scan 2982 * request, so invert the index here. 2983 */ 2984 idx = mvm->n_nd_match_sets - i - 1; 2985 match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len; 2986 memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid, 2987 match->ssid.ssid_len); 2988 2989 if (mvm->n_nd_channels < n_channels) 2990 continue; 2991 2992 iwl_mvm_query_set_freqs(mvm, d3_data->nd_results, match, i); 2993 } 2994 2995 out_report_nd: 2996 wakeup.net_detect = net_detect; 2997 out: 2998 iwl_mvm_free_nd(mvm); 2999 3000 mutex_unlock(&mvm->mutex); 3001 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); 3002 3003 if (net_detect) { 3004 for (i = 0; i < net_detect->n_matches; i++) 3005 kfree(net_detect->matches[i]); 3006 kfree(net_detect); 3007 } 3008 } 3009 3010 static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac, 3011 struct ieee80211_vif *vif) 3012 { 3013 /* skip the one we keep connection on */ 3014 if (data == vif) 3015 return; 3016 3017 if (vif->type == NL80211_IFTYPE_STATION) 3018 ieee80211_resume_disconnect(vif); 3019 } 3020 3021 static bool iwl_mvm_rt_status(struct iwl_trans *trans, u32 base, u32 *err_id) 3022 { 3023 struct error_table_start { 3024 /* cf. struct iwl_error_event_table */ 3025 u32 valid; 3026 __le32 err_id; 3027 } err_info; 3028 3029 if (!base) 3030 return false; 3031 3032 iwl_trans_read_mem_bytes(trans, base, 3033 &err_info, sizeof(err_info)); 3034 if (err_info.valid && err_id) 3035 *err_id = le32_to_cpu(err_info.err_id); 3036 3037 return !!err_info.valid; 3038 } 3039 3040 static bool iwl_mvm_check_rt_status(struct iwl_mvm *mvm, 3041 struct ieee80211_vif *vif) 3042 { 3043 u32 err_id; 3044 3045 /* check for lmac1 error */ 3046 if (iwl_mvm_rt_status(mvm->trans, 3047 mvm->trans->dbg.lmac_error_event_table[0], 3048 &err_id)) { 3049 if (err_id == RF_KILL_INDICATOR_FOR_WOWLAN) { 3050 struct cfg80211_wowlan_wakeup wakeup = { 3051 .rfkill_release = true, 3052 }; 3053 ieee80211_report_wowlan_wakeup(vif, &wakeup, 3054 GFP_KERNEL); 3055 } 3056 return true; 3057 } 3058 3059 /* check if we have lmac2 set and check for error */ 3060 if (iwl_mvm_rt_status(mvm->trans, 3061 mvm->trans->dbg.lmac_error_event_table[1], NULL)) 3062 return true; 3063 3064 /* check for umac error */ 3065 if (iwl_mvm_rt_status(mvm->trans, 3066 mvm->trans->dbg.umac_error_event_table, NULL)) 3067 return true; 3068 3069 return false; 3070 } 3071 3072 /* 3073 * This function assumes: 3074 * 1. The mutex is already held. 3075 * 2. The callee functions unlock the mutex. 3076 */ 3077 static bool 3078 iwl_mvm_choose_query_wakeup_reasons(struct iwl_mvm *mvm, 3079 struct ieee80211_vif *vif, 3080 struct iwl_d3_data *d3_data) 3081 { 3082 lockdep_assert_held(&mvm->mutex); 3083 3084 /* if FW uses status notification, status shouldn't be NULL here */ 3085 if (!d3_data->status) { 3086 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3087 u8 sta_id = mvm->net_detect ? IWL_MVM_INVALID_STA : 3088 mvmvif->deflink.ap_sta_id; 3089 3090 /* bug - FW with MLO has status notification */ 3091 WARN_ON(ieee80211_vif_is_mld(vif)); 3092 3093 d3_data->status = iwl_mvm_send_wowlan_get_status(mvm, sta_id); 3094 } 3095 3096 if (mvm->net_detect) { 3097 iwl_mvm_query_netdetect_reasons(mvm, vif, d3_data); 3098 } else { 3099 bool keep = iwl_mvm_query_wakeup_reasons(mvm, vif, 3100 d3_data->status); 3101 3102 #ifdef CONFIG_IWLWIFI_DEBUGFS 3103 if (keep) 3104 mvm->keep_vif = vif; 3105 #endif 3106 3107 return keep; 3108 } 3109 return false; 3110 } 3111 3112 #define IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT (IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET | \ 3113 IWL_WOWLAN_WAKEUP_BY_PATTERN | \ 3114 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN |\ 3115 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN_WILDCARD |\ 3116 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN |\ 3117 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN_WILDCARD) 3118 3119 static int iwl_mvm_wowlan_store_wake_pkt(struct iwl_mvm *mvm, 3120 struct iwl_wowlan_wake_pkt_notif *notif, 3121 struct iwl_wowlan_status_data *status, 3122 u32 len) 3123 { 3124 u32 data_size, packet_len = le32_to_cpu(notif->wake_packet_length); 3125 3126 if (len < sizeof(*notif)) { 3127 IWL_ERR(mvm, "Invalid WoWLAN wake packet notification!\n"); 3128 return -EIO; 3129 } 3130 3131 if (WARN_ON(!status)) { 3132 IWL_ERR(mvm, "Got wake packet notification but wowlan status data is NULL\n"); 3133 return -EIO; 3134 } 3135 3136 if (WARN_ON(!(status->wakeup_reasons & 3137 IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT))) { 3138 IWL_ERR(mvm, "Got wakeup packet but wakeup reason is %x\n", 3139 status->wakeup_reasons); 3140 return -EIO; 3141 } 3142 3143 data_size = len - offsetof(struct iwl_wowlan_wake_pkt_notif, wake_packet); 3144 3145 /* data_size got the padding from the notification, remove it. */ 3146 if (packet_len < data_size) 3147 data_size = packet_len; 3148 3149 status->wake_packet = kmemdup(notif->wake_packet, data_size, 3150 GFP_ATOMIC); 3151 3152 if (!status->wake_packet) 3153 return -ENOMEM; 3154 3155 status->wake_packet_length = packet_len; 3156 status->wake_packet_bufsize = data_size; 3157 3158 return 0; 3159 } 3160 3161 static void iwl_mvm_nd_match_info_handler(struct iwl_mvm *mvm, 3162 struct iwl_d3_data *d3_data, 3163 struct iwl_scan_offload_match_info *notif, 3164 u32 len) 3165 { 3166 struct iwl_wowlan_status_data *status = d3_data->status; 3167 struct ieee80211_vif *vif = iwl_mvm_get_bss_vif(mvm); 3168 struct iwl_mvm_nd_results *results = d3_data->nd_results; 3169 size_t i, matches_len = sizeof(struct iwl_scan_offload_profile_match) * 3170 iwl_umac_scan_get_max_profiles(mvm->fw); 3171 3172 if (IS_ERR_OR_NULL(vif)) 3173 return; 3174 3175 if (len < sizeof(struct iwl_scan_offload_match_info)) { 3176 IWL_ERR(mvm, "Invalid scan match info notification\n"); 3177 return; 3178 } 3179 3180 if (!mvm->net_detect) { 3181 IWL_ERR(mvm, "Unexpected scan match info notification\n"); 3182 return; 3183 } 3184 3185 if (!status || status->wakeup_reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) { 3186 IWL_ERR(mvm, 3187 "Ignore scan match info notification: no reason\n"); 3188 return; 3189 } 3190 3191 #ifdef CONFIG_IWLWIFI_DEBUGFS 3192 mvm->last_netdetect_scans = le32_to_cpu(notif->n_scans_done); 3193 #endif 3194 3195 results->matched_profiles = le32_to_cpu(notif->matched_profiles); 3196 IWL_INFO(mvm, "number of matched profiles=%u\n", 3197 results->matched_profiles); 3198 3199 if (results->matched_profiles) { 3200 memcpy(results->matches, notif->matches, matches_len); 3201 d3_data->nd_results_valid = true; 3202 } 3203 3204 /* no scan should be active at this point */ 3205 mvm->scan_status = 0; 3206 for (i = 0; i < mvm->max_scans; i++) 3207 mvm->scan_uid_status[i] = 0; 3208 } 3209 3210 static bool iwl_mvm_wait_d3_notif(struct iwl_notif_wait_data *notif_wait, 3211 struct iwl_rx_packet *pkt, void *data) 3212 { 3213 struct iwl_mvm *mvm = 3214 container_of(notif_wait, struct iwl_mvm, notif_wait); 3215 struct iwl_d3_data *d3_data = data; 3216 u32 len = iwl_rx_packet_payload_len(pkt); 3217 int ret; 3218 int wowlan_info_ver = iwl_fw_lookup_notif_ver(mvm->fw, 3219 PROT_OFFLOAD_GROUP, 3220 WOWLAN_INFO_NOTIFICATION, 3221 IWL_FW_CMD_VER_UNKNOWN); 3222 3223 3224 switch (WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) { 3225 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION): { 3226 3227 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_INFO) { 3228 /* We might get two notifications due to dual bss */ 3229 IWL_DEBUG_WOWLAN(mvm, 3230 "Got additional wowlan info notification\n"); 3231 break; 3232 } 3233 3234 if (wowlan_info_ver < 2) { 3235 struct iwl_wowlan_info_notif_v1 *notif_v1 = 3236 (void *)pkt->data; 3237 struct iwl_wowlan_info_notif_v2 *notif_v2; 3238 3239 notif_v2 = kmemdup(notif_v1, sizeof(*notif_v2), GFP_ATOMIC); 3240 3241 if (!notif_v2) 3242 return false; 3243 3244 notif_v2->tid_tear_down = notif_v1->tid_tear_down; 3245 notif_v2->station_id = notif_v1->station_id; 3246 memset_after(notif_v2, 0, station_id); 3247 iwl_mvm_parse_wowlan_info_notif_v2(mvm, notif_v2, 3248 d3_data->status, 3249 len); 3250 kfree(notif_v2); 3251 3252 } else if (wowlan_info_ver == 2) { 3253 struct iwl_wowlan_info_notif_v2 *notif_v2 = 3254 (void *)pkt->data; 3255 3256 iwl_mvm_parse_wowlan_info_notif_v2(mvm, notif_v2, 3257 d3_data->status, 3258 len); 3259 } else { 3260 struct iwl_wowlan_info_notif *notif = 3261 (void *)pkt->data; 3262 3263 iwl_mvm_parse_wowlan_info_notif(mvm, notif, 3264 d3_data->status, len, 3265 wowlan_info_ver > 3); 3266 } 3267 3268 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_INFO; 3269 3270 if (d3_data->status && 3271 d3_data->status->wakeup_reasons & IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT) 3272 /* We are supposed to get also wake packet notif */ 3273 d3_data->notif_expected |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT; 3274 3275 break; 3276 } 3277 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION): { 3278 struct iwl_wowlan_wake_pkt_notif *notif = (void *)pkt->data; 3279 3280 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_WAKE_PKT) { 3281 /* We shouldn't get two wake packet notifications */ 3282 IWL_ERR(mvm, 3283 "Got additional wowlan wake packet notification\n"); 3284 } else { 3285 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT; 3286 len = iwl_rx_packet_payload_len(pkt); 3287 ret = iwl_mvm_wowlan_store_wake_pkt(mvm, notif, 3288 d3_data->status, 3289 len); 3290 if (ret) 3291 IWL_ERR(mvm, 3292 "Can't parse WOWLAN_WAKE_PKT_NOTIFICATION\n"); 3293 } 3294 3295 break; 3296 } 3297 case WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF): { 3298 struct iwl_scan_offload_match_info *notif = (void *)pkt->data; 3299 3300 if (d3_data->notif_received & IWL_D3_ND_MATCH_INFO) { 3301 IWL_ERR(mvm, 3302 "Got additional netdetect match info\n"); 3303 break; 3304 } 3305 3306 d3_data->notif_received |= IWL_D3_ND_MATCH_INFO; 3307 3308 /* explicitly set this in the 'expected' as well */ 3309 d3_data->notif_expected |= IWL_D3_ND_MATCH_INFO; 3310 3311 len = iwl_rx_packet_payload_len(pkt); 3312 iwl_mvm_nd_match_info_handler(mvm, d3_data, notif, len); 3313 break; 3314 } 3315 case WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION): { 3316 struct iwl_mvm_d3_end_notif *notif = (void *)pkt->data; 3317 3318 d3_data->d3_end_flags = __le32_to_cpu(notif->flags); 3319 d3_data->notif_received |= IWL_D3_NOTIF_D3_END_NOTIF; 3320 3321 break; 3322 } 3323 default: 3324 WARN_ON(1); 3325 } 3326 3327 return d3_data->notif_received == d3_data->notif_expected; 3328 } 3329 3330 static int iwl_mvm_resume_firmware(struct iwl_mvm *mvm, bool test) 3331 { 3332 int ret; 3333 enum iwl_d3_status d3_status; 3334 struct iwl_host_cmd cmd = { 3335 .id = D0I3_END_CMD, 3336 .flags = CMD_WANT_SKB | CMD_SEND_IN_D3, 3337 }; 3338 bool reset = fw_has_capa(&mvm->fw->ucode_capa, 3339 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 3340 3341 ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, !reset); 3342 if (ret) 3343 return ret; 3344 3345 if (d3_status != IWL_D3_STATUS_ALIVE) { 3346 IWL_INFO(mvm, "Device was reset during suspend\n"); 3347 return -ENOENT; 3348 } 3349 3350 /* 3351 * We should trigger resume flow using command only for 22000 family 3352 * AX210 and above don't need the command since they have 3353 * the doorbell interrupt. 3354 */ 3355 if (mvm->trans->trans_cfg->device_family <= IWL_DEVICE_FAMILY_22000 && 3356 fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_D0I3_END_FIRST)) { 3357 ret = iwl_mvm_send_cmd(mvm, &cmd); 3358 if (ret < 0) 3359 IWL_ERR(mvm, "Failed to send D0I3_END_CMD first (%d)\n", 3360 ret); 3361 } 3362 3363 return ret; 3364 } 3365 3366 #define IWL_MVM_D3_NOTIF_TIMEOUT (HZ / 5) 3367 3368 static int iwl_mvm_d3_notif_wait(struct iwl_mvm *mvm, 3369 struct iwl_d3_data *d3_data) 3370 { 3371 static const u16 d3_resume_notif[] = { 3372 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION), 3373 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION), 3374 WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF), 3375 WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION) 3376 }; 3377 struct iwl_notification_wait wait_d3_notif; 3378 int ret; 3379 3380 iwl_init_notification_wait(&mvm->notif_wait, &wait_d3_notif, 3381 d3_resume_notif, ARRAY_SIZE(d3_resume_notif), 3382 iwl_mvm_wait_d3_notif, d3_data); 3383 3384 ret = iwl_mvm_resume_firmware(mvm, d3_data->test); 3385 if (ret) { 3386 iwl_remove_notification(&mvm->notif_wait, &wait_d3_notif); 3387 return ret; 3388 } 3389 3390 return iwl_wait_notification(&mvm->notif_wait, &wait_d3_notif, 3391 IWL_MVM_D3_NOTIF_TIMEOUT); 3392 } 3393 3394 static inline bool iwl_mvm_d3_resume_notif_based(struct iwl_mvm *mvm) 3395 { 3396 return iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3397 WOWLAN_INFO_NOTIFICATION, 0) && 3398 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3399 WOWLAN_WAKE_PKT_NOTIFICATION, 0) && 3400 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3401 D3_END_NOTIFICATION, 0); 3402 } 3403 3404 static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test) 3405 { 3406 struct ieee80211_vif *vif = NULL; 3407 int ret = 1; 3408 struct iwl_mvm_nd_results results = {}; 3409 struct iwl_d3_data d3_data = { 3410 .test = test, 3411 .notif_expected = 3412 IWL_D3_NOTIF_WOWLAN_INFO | 3413 IWL_D3_NOTIF_D3_END_NOTIF, 3414 .nd_results_valid = false, 3415 .nd_results = &results, 3416 }; 3417 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 3418 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 3419 bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa, 3420 IWL_UCODE_TLV_CAPA_D0I3_END_FIRST); 3421 bool resume_notif_based = iwl_mvm_d3_resume_notif_based(mvm); 3422 bool keep = false; 3423 3424 mutex_lock(&mvm->mutex); 3425 3426 mvm->last_reset_or_resume_time_jiffies = jiffies; 3427 3428 /* get the BSS vif pointer again */ 3429 vif = iwl_mvm_get_bss_vif(mvm); 3430 if (IS_ERR_OR_NULL(vif)) 3431 goto err; 3432 3433 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt); 3434 3435 if (iwl_mvm_check_rt_status(mvm, vif)) { 3436 set_bit(STATUS_FW_ERROR, &mvm->trans->status); 3437 iwl_mvm_dump_nic_error_log(mvm); 3438 iwl_dbg_tlv_time_point(&mvm->fwrt, 3439 IWL_FW_INI_TIME_POINT_FW_ASSERT, NULL); 3440 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert, 3441 false, 0); 3442 ret = 1; 3443 goto err; 3444 } 3445 3446 if (resume_notif_based) { 3447 d3_data.status = kzalloc(sizeof(*d3_data.status), GFP_KERNEL); 3448 if (!d3_data.status) { 3449 IWL_ERR(mvm, "Failed to allocate wowlan status\n"); 3450 ret = -ENOMEM; 3451 goto err; 3452 } 3453 3454 ret = iwl_mvm_d3_notif_wait(mvm, &d3_data); 3455 if (ret) 3456 goto err; 3457 } else { 3458 ret = iwl_mvm_resume_firmware(mvm, test); 3459 if (ret < 0) 3460 goto err; 3461 } 3462 3463 iwl_mvm_unblock_esr(mvm, vif, IWL_MVM_ESR_BLOCKED_WOWLAN); 3464 3465 /* after the successful handshake, we're out of D3 */ 3466 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED; 3467 3468 /* when reset is required we can't send these following commands */ 3469 if (d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE) 3470 goto query_wakeup_reasons; 3471 3472 /* 3473 * Query the current location and source from the D3 firmware so we 3474 * can play it back when we re-intiailize the D0 firmware 3475 */ 3476 iwl_mvm_update_changed_regdom(mvm); 3477 3478 /* Re-configure PPAG settings */ 3479 iwl_mvm_ppag_send_cmd(mvm); 3480 3481 if (!unified_image) 3482 /* Re-configure default SAR profile */ 3483 iwl_mvm_sar_select_profile(mvm, 1, 1); 3484 3485 if (mvm->net_detect && unified_image) { 3486 /* If this is a non-unified image, we restart the FW, 3487 * so no need to stop the netdetect scan. If that 3488 * fails, continue and try to get the wake-up reasons, 3489 * but trigger a HW restart by keeping a failure code 3490 * in ret. 3491 */ 3492 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT, 3493 false); 3494 } 3495 3496 query_wakeup_reasons: 3497 keep = iwl_mvm_choose_query_wakeup_reasons(mvm, vif, &d3_data); 3498 /* has unlocked the mutex, so skip that */ 3499 goto out; 3500 3501 err: 3502 mutex_unlock(&mvm->mutex); 3503 out: 3504 if (d3_data.status) 3505 kfree(d3_data.status->wake_packet); 3506 kfree(d3_data.status); 3507 iwl_mvm_free_nd(mvm); 3508 3509 if (!d3_data.test && !mvm->net_detect) 3510 ieee80211_iterate_active_interfaces_mtx(mvm->hw, 3511 IEEE80211_IFACE_ITER_NORMAL, 3512 iwl_mvm_d3_disconnect_iter, 3513 keep ? vif : NULL); 3514 3515 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 3516 3517 /* no need to reset the device in unified images, if successful */ 3518 if (unified_image && !ret) { 3519 /* nothing else to do if we already sent D0I3_END_CMD */ 3520 if (d0i3_first) 3521 return 0; 3522 3523 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3524 D3_END_NOTIFICATION, 0)) { 3525 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL); 3526 if (!ret) 3527 return 0; 3528 } else if (!(d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)) { 3529 return 0; 3530 } 3531 } 3532 3533 /* 3534 * Reconfigure the device in one of the following cases: 3535 * 1. We are not using a unified image 3536 * 2. We are using a unified image but had an error while exiting D3 3537 */ 3538 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); 3539 3540 /* regardless of what happened, we're now out of D3 */ 3541 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED; 3542 3543 return 1; 3544 } 3545 3546 int iwl_mvm_resume(struct ieee80211_hw *hw) 3547 { 3548 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3549 int ret; 3550 3551 ret = __iwl_mvm_resume(mvm, false); 3552 3553 iwl_mvm_resume_tcm(mvm); 3554 3555 iwl_fw_runtime_resume(&mvm->fwrt); 3556 3557 return ret; 3558 } 3559 3560 void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled) 3561 { 3562 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3563 3564 device_set_wakeup_enable(mvm->trans->dev, enabled); 3565 } 3566 3567 #ifdef CONFIG_IWLWIFI_DEBUGFS 3568 static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file) 3569 { 3570 struct iwl_mvm *mvm = inode->i_private; 3571 int err; 3572 3573 if (mvm->d3_test_active) 3574 return -EBUSY; 3575 3576 file->private_data = inode->i_private; 3577 3578 iwl_mvm_pause_tcm(mvm, true); 3579 3580 iwl_fw_runtime_suspend(&mvm->fwrt); 3581 3582 /* start pseudo D3 */ 3583 rtnl_lock(); 3584 wiphy_lock(mvm->hw->wiphy); 3585 err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true); 3586 wiphy_unlock(mvm->hw->wiphy); 3587 rtnl_unlock(); 3588 if (err > 0) 3589 err = -EINVAL; 3590 if (err) 3591 return err; 3592 3593 mvm->d3_test_active = true; 3594 mvm->keep_vif = NULL; 3595 return 0; 3596 } 3597 3598 static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf, 3599 size_t count, loff_t *ppos) 3600 { 3601 struct iwl_mvm *mvm = file->private_data; 3602 unsigned long end = jiffies + 60 * HZ; 3603 u32 pme_asserted; 3604 3605 while (true) { 3606 /* read pme_ptr if available */ 3607 if (mvm->d3_test_pme_ptr) { 3608 pme_asserted = iwl_trans_read_mem32(mvm->trans, 3609 mvm->d3_test_pme_ptr); 3610 if (pme_asserted) 3611 break; 3612 } 3613 3614 if (msleep_interruptible(100)) 3615 break; 3616 3617 if (time_is_before_jiffies(end)) { 3618 IWL_ERR(mvm, 3619 "ending pseudo-D3 with timeout after ~60 seconds\n"); 3620 return -ETIMEDOUT; 3621 } 3622 } 3623 3624 return 0; 3625 } 3626 3627 static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac, 3628 struct ieee80211_vif *vif) 3629 { 3630 /* skip the one we keep connection on */ 3631 if (_data == vif) 3632 return; 3633 3634 if (vif->type == NL80211_IFTYPE_STATION) 3635 ieee80211_connection_loss(vif); 3636 } 3637 3638 static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file) 3639 { 3640 struct iwl_mvm *mvm = inode->i_private; 3641 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 3642 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 3643 3644 mvm->d3_test_active = false; 3645 3646 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt); 3647 3648 rtnl_lock(); 3649 wiphy_lock(mvm->hw->wiphy); 3650 __iwl_mvm_resume(mvm, true); 3651 wiphy_unlock(mvm->hw->wiphy); 3652 rtnl_unlock(); 3653 3654 iwl_mvm_resume_tcm(mvm); 3655 3656 iwl_fw_runtime_resume(&mvm->fwrt); 3657 3658 iwl_abort_notification_waits(&mvm->notif_wait); 3659 if (!unified_image) { 3660 int remaining_time = 10; 3661 3662 ieee80211_restart_hw(mvm->hw); 3663 3664 /* wait for restart and disconnect all interfaces */ 3665 while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 3666 remaining_time > 0) { 3667 remaining_time--; 3668 msleep(1000); 3669 } 3670 3671 if (remaining_time == 0) 3672 IWL_ERR(mvm, "Timed out waiting for HW restart!\n"); 3673 } 3674 3675 ieee80211_iterate_active_interfaces_atomic( 3676 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 3677 iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif); 3678 3679 return 0; 3680 } 3681 3682 const struct file_operations iwl_dbgfs_d3_test_ops = { 3683 .llseek = no_llseek, 3684 .open = iwl_mvm_d3_test_open, 3685 .read = iwl_mvm_d3_test_read, 3686 .release = iwl_mvm_d3_test_release, 3687 }; 3688 #endif 3689