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 __le32 *cipher = NULL; 599 600 if (key->keyidx == 4 || key->keyidx == 5) 601 cipher = &data->kek_kck_cmd->igtk_cipher; 602 if (key->keyidx == 6 || key->keyidx == 7) 603 cipher = &data->kek_kck_cmd->bigtk_cipher; 604 605 switch (key->cipher) { 606 default: 607 return; 608 case WLAN_CIPHER_SUITE_TKIP: 609 if (!sta) 610 data->kek_kck_cmd->gtk_cipher = 611 cpu_to_le32(STA_KEY_FLG_TKIP); 612 return; 613 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 614 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 615 if (cipher) 616 *cipher = cpu_to_le32(STA_KEY_FLG_GCMP); 617 return; 618 case WLAN_CIPHER_SUITE_AES_CMAC: 619 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 620 if (cipher) 621 *cipher = cpu_to_le32(STA_KEY_FLG_CCM); 622 return; 623 case WLAN_CIPHER_SUITE_CCMP: 624 if (!sta) 625 data->kek_kck_cmd->gtk_cipher = 626 cpu_to_le32(STA_KEY_FLG_CCM); 627 return; 628 case WLAN_CIPHER_SUITE_GCMP: 629 case WLAN_CIPHER_SUITE_GCMP_256: 630 if (!sta) 631 data->kek_kck_cmd->gtk_cipher = 632 cpu_to_le32(STA_KEY_FLG_GCMP); 633 return; 634 } 635 } 636 637 static int iwl_mvm_send_patterns_v1(struct iwl_mvm *mvm, 638 struct cfg80211_wowlan *wowlan) 639 { 640 struct iwl_wowlan_patterns_cmd_v1 *pattern_cmd; 641 struct iwl_host_cmd cmd = { 642 .id = WOWLAN_PATTERNS, 643 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 644 }; 645 int i, err; 646 647 if (!wowlan->n_patterns) 648 return 0; 649 650 cmd.len[0] = struct_size(pattern_cmd, patterns, wowlan->n_patterns); 651 652 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL); 653 if (!pattern_cmd) 654 return -ENOMEM; 655 656 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns); 657 658 for (i = 0; i < wowlan->n_patterns; i++) { 659 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8); 660 661 memcpy(&pattern_cmd->patterns[i].mask, 662 wowlan->patterns[i].mask, mask_len); 663 memcpy(&pattern_cmd->patterns[i].pattern, 664 wowlan->patterns[i].pattern, 665 wowlan->patterns[i].pattern_len); 666 pattern_cmd->patterns[i].mask_size = mask_len; 667 pattern_cmd->patterns[i].pattern_size = 668 wowlan->patterns[i].pattern_len; 669 } 670 671 cmd.data[0] = pattern_cmd; 672 err = iwl_mvm_send_cmd(mvm, &cmd); 673 kfree(pattern_cmd); 674 return err; 675 } 676 677 static int iwl_mvm_send_patterns(struct iwl_mvm *mvm, 678 struct iwl_mvm_vif_link_info *mvm_link, 679 struct cfg80211_wowlan *wowlan) 680 { 681 struct iwl_wowlan_patterns_cmd *pattern_cmd; 682 struct iwl_host_cmd cmd = { 683 .id = WOWLAN_PATTERNS, 684 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 685 }; 686 int i, err; 687 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id, 688 IWL_FW_CMD_VER_UNKNOWN); 689 690 if (!wowlan->n_patterns) 691 return 0; 692 693 cmd.len[0] = sizeof(*pattern_cmd) + 694 wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern_v2); 695 696 pattern_cmd = kzalloc(cmd.len[0], GFP_KERNEL); 697 if (!pattern_cmd) 698 return -ENOMEM; 699 700 pattern_cmd->n_patterns = wowlan->n_patterns; 701 if (ver >= 3) 702 pattern_cmd->sta_id = mvm_link->ap_sta_id; 703 704 for (i = 0; i < wowlan->n_patterns; i++) { 705 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8); 706 707 pattern_cmd->patterns[i].pattern_type = 708 WOWLAN_PATTERN_TYPE_BITMASK; 709 710 memcpy(&pattern_cmd->patterns[i].u.bitmask.mask, 711 wowlan->patterns[i].mask, mask_len); 712 memcpy(&pattern_cmd->patterns[i].u.bitmask.pattern, 713 wowlan->patterns[i].pattern, 714 wowlan->patterns[i].pattern_len); 715 pattern_cmd->patterns[i].u.bitmask.mask_size = mask_len; 716 pattern_cmd->patterns[i].u.bitmask.pattern_size = 717 wowlan->patterns[i].pattern_len; 718 } 719 720 cmd.data[0] = pattern_cmd; 721 err = iwl_mvm_send_cmd(mvm, &cmd); 722 kfree(pattern_cmd); 723 return err; 724 } 725 726 static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 727 struct ieee80211_sta *ap_sta) 728 { 729 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 730 struct ieee80211_chanctx_conf *ctx; 731 u8 chains_static, chains_dynamic; 732 struct cfg80211_chan_def chandef, ap_def; 733 int ret, i; 734 struct iwl_binding_cmd_v1 binding_cmd = {}; 735 struct iwl_time_quota_cmd quota_cmd = {}; 736 struct iwl_time_quota_data *quota; 737 u32 status; 738 739 if (WARN_ON_ONCE(iwl_mvm_is_cdb_supported(mvm) || 740 ieee80211_vif_is_mld(vif))) 741 return -EINVAL; 742 743 /* add back the PHY */ 744 if (WARN_ON(!mvmvif->deflink.phy_ctxt)) 745 return -EINVAL; 746 747 rcu_read_lock(); 748 ctx = rcu_dereference(vif->bss_conf.chanctx_conf); 749 if (WARN_ON(!ctx)) { 750 rcu_read_unlock(); 751 return -EINVAL; 752 } 753 chandef = ctx->def; 754 ap_def = ctx->ap; 755 chains_static = ctx->rx_chains_static; 756 chains_dynamic = ctx->rx_chains_dynamic; 757 rcu_read_unlock(); 758 759 ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->deflink.phy_ctxt, &chandef, 760 &ap_def, chains_static, chains_dynamic); 761 if (ret) 762 return ret; 763 764 /* add back the MAC */ 765 mvmvif->uploaded = false; 766 767 if (WARN_ON(!vif->cfg.assoc)) 768 return -EINVAL; 769 770 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 771 if (ret) 772 return ret; 773 774 /* add back binding - XXX refactor? */ 775 binding_cmd.id_and_color = 776 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id, 777 mvmvif->deflink.phy_ctxt->color)); 778 binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD); 779 binding_cmd.phy = 780 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id, 781 mvmvif->deflink.phy_ctxt->color)); 782 binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 783 mvmvif->color)); 784 for (i = 1; i < MAX_MACS_IN_BINDING; i++) 785 binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID); 786 787 status = 0; 788 ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD, 789 IWL_BINDING_CMD_SIZE_V1, &binding_cmd, 790 &status); 791 if (ret) { 792 IWL_ERR(mvm, "Failed to add binding: %d\n", ret); 793 return ret; 794 } 795 796 if (status) { 797 IWL_ERR(mvm, "Binding command failed: %u\n", status); 798 return -EIO; 799 } 800 801 ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false, 0); 802 if (ret) 803 return ret; 804 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->deflink.ap_sta_id], 805 ap_sta); 806 807 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 808 if (ret) 809 return ret; 810 811 /* and some quota */ 812 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, 0); 813 quota->id_and_color = 814 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id, 815 mvmvif->deflink.phy_ctxt->color)); 816 quota->quota = cpu_to_le32(IWL_MVM_MAX_QUOTA); 817 quota->max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA); 818 819 for (i = 1; i < MAX_BINDINGS; i++) { 820 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, i); 821 quota->id_and_color = cpu_to_le32(FW_CTXT_INVALID); 822 } 823 824 ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0, 825 iwl_mvm_quota_cmd_size(mvm), "a_cmd); 826 if (ret) 827 IWL_ERR(mvm, "Failed to send quota: %d\n", ret); 828 829 if (iwl_mvm_is_lar_supported(mvm) && iwl_mvm_init_fw_regd(mvm, false)) 830 IWL_ERR(mvm, "Failed to initialize D3 LAR information\n"); 831 832 return 0; 833 } 834 835 static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm, 836 struct ieee80211_vif *vif) 837 { 838 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 839 struct iwl_nonqos_seq_query_cmd query_cmd = { 840 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET), 841 .mac_id_n_color = 842 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 843 mvmvif->color)), 844 }; 845 struct iwl_host_cmd cmd = { 846 .id = NON_QOS_TX_COUNTER_CMD, 847 .flags = CMD_WANT_SKB, 848 }; 849 int err; 850 u32 size; 851 852 cmd.data[0] = &query_cmd; 853 cmd.len[0] = sizeof(query_cmd); 854 855 err = iwl_mvm_send_cmd(mvm, &cmd); 856 if (err) 857 return err; 858 859 size = iwl_rx_packet_payload_len(cmd.resp_pkt); 860 if (size < sizeof(__le16)) { 861 err = -EINVAL; 862 } else { 863 err = le16_to_cpup((__le16 *)cmd.resp_pkt->data); 864 /* firmware returns next, not last-used seqno */ 865 err = (u16) (err - 0x10); 866 } 867 868 iwl_free_resp(&cmd); 869 return err; 870 } 871 872 void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 873 { 874 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 875 struct iwl_nonqos_seq_query_cmd query_cmd = { 876 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET), 877 .mac_id_n_color = 878 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 879 mvmvif->color)), 880 .value = cpu_to_le16(mvmvif->seqno), 881 }; 882 883 /* return if called during restart, not resume from D3 */ 884 if (!mvmvif->seqno_valid) 885 return; 886 887 mvmvif->seqno_valid = false; 888 889 if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0, 890 sizeof(query_cmd), &query_cmd)) 891 IWL_ERR(mvm, "failed to set non-QoS seqno\n"); 892 } 893 894 static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm) 895 { 896 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 897 898 iwl_mvm_stop_device(mvm); 899 /* 900 * Set the HW restart bit -- this is mostly true as we're 901 * going to load new firmware and reprogram that, though 902 * the reprogramming is going to be manual to avoid adding 903 * all the MACs that aren't support. 904 * We don't have to clear up everything though because the 905 * reprogramming is manual. When we resume, we'll actually 906 * go through a proper restart sequence again to switch 907 * back to the runtime firmware image. 908 */ 909 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 910 911 /* the fw is reset, so all the keys are cleared */ 912 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); 913 914 mvm->ptk_ivlen = 0; 915 mvm->ptk_icvlen = 0; 916 mvm->ptk_ivlen = 0; 917 mvm->ptk_icvlen = 0; 918 919 return iwl_mvm_load_d3_fw(mvm); 920 } 921 922 static int 923 iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm, 924 struct cfg80211_wowlan *wowlan, 925 struct iwl_wowlan_config_cmd *wowlan_config_cmd, 926 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif, 927 struct ieee80211_sta *ap_sta) 928 { 929 struct iwl_mvm_sta *mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta); 930 931 /* TODO: wowlan_config_cmd->wowlan_ba_teardown_tids */ 932 933 wowlan_config_cmd->is_11n_connection = 934 ap_sta->deflink.ht_cap.ht_supported; 935 wowlan_config_cmd->flags = ENABLE_L3_FILTERING | 936 ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING; 937 938 if (ap_sta->mfp) 939 wowlan_config_cmd->flags |= IS_11W_ASSOC; 940 941 if (iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_CONFIGURATION, 0) < 6) { 942 /* Query the last used seqno and set it */ 943 int ret = iwl_mvm_get_last_nonqos_seq(mvm, vif); 944 945 if (ret < 0) 946 return ret; 947 948 wowlan_config_cmd->non_qos_seq = cpu_to_le16(ret); 949 } 950 951 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, wowlan_config_cmd); 952 953 if (wowlan->disconnect) 954 wowlan_config_cmd->wakeup_filter |= 955 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS | 956 IWL_WOWLAN_WAKEUP_LINK_CHANGE); 957 if (wowlan->magic_pkt) 958 wowlan_config_cmd->wakeup_filter |= 959 cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET); 960 if (wowlan->gtk_rekey_failure) 961 wowlan_config_cmd->wakeup_filter |= 962 cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL); 963 if (wowlan->eap_identity_req) 964 wowlan_config_cmd->wakeup_filter |= 965 cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ); 966 if (wowlan->four_way_handshake) 967 wowlan_config_cmd->wakeup_filter |= 968 cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE); 969 if (wowlan->n_patterns) 970 wowlan_config_cmd->wakeup_filter |= 971 cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH); 972 973 if (wowlan->rfkill_release) 974 wowlan_config_cmd->wakeup_filter |= 975 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT); 976 977 if (wowlan->tcp) { 978 /* 979 * Set the "link change" (really "link lost") flag as well 980 * since that implies losing the TCP connection. 981 */ 982 wowlan_config_cmd->wakeup_filter |= 983 cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS | 984 IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE | 985 IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET | 986 IWL_WOWLAN_WAKEUP_LINK_CHANGE); 987 } 988 989 if (wowlan->any) { 990 wowlan_config_cmd->wakeup_filter |= 991 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS | 992 IWL_WOWLAN_WAKEUP_LINK_CHANGE | 993 IWL_WOWLAN_WAKEUP_RX_FRAME | 994 IWL_WOWLAN_WAKEUP_BCN_FILTERING); 995 } 996 997 return 0; 998 } 999 1000 static int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm, 1001 struct ieee80211_vif *vif, 1002 struct iwl_mvm_vif_link_info *mvm_link) 1003 { 1004 bool unified = fw_has_capa(&mvm->fw->ucode_capa, 1005 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1006 struct wowlan_key_reprogram_data key_data = {}; 1007 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1008 int ret; 1009 u8 cmd_ver; 1010 size_t cmd_size; 1011 1012 if (!unified) { 1013 /* 1014 * if we have to configure keys, call ieee80211_iter_keys(), 1015 * as we need non-atomic context in order to take the 1016 * required locks. 1017 */ 1018 /* 1019 * Note that currently we don't use CMD_ASYNC in the iterator. 1020 * In case of key_data.configure_keys, all the configured 1021 * commands are SYNC, and iwl_mvm_wowlan_program_keys() will 1022 * take care of locking/unlocking mvm->mutex. 1023 */ 1024 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_program_keys, 1025 &key_data); 1026 1027 if (key_data.error) 1028 return -EIO; 1029 } 1030 1031 ret = iwl_mvm_wowlan_config_rsc_tsc(mvm, vif, mvm_link); 1032 if (ret) 1033 return ret; 1034 1035 if (!fw_has_api(&mvm->fw->ucode_capa, 1036 IWL_UCODE_TLV_API_TKIP_MIC_KEYS)) { 1037 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TKIP_PARAM, 1038 IWL_FW_CMD_VER_UNKNOWN); 1039 struct wowlan_key_tkip_data tkip_data = {}; 1040 int size; 1041 1042 if (ver == 2) { 1043 size = sizeof(tkip_data.tkip); 1044 tkip_data.tkip.sta_id = 1045 cpu_to_le32(mvm_link->ap_sta_id); 1046 } else if (ver == 1 || ver == IWL_FW_CMD_VER_UNKNOWN) { 1047 size = sizeof(struct iwl_wowlan_tkip_params_cmd_ver_1); 1048 } else { 1049 WARN_ON_ONCE(1); 1050 return -EINVAL; 1051 } 1052 1053 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_get_tkip_data, 1054 &tkip_data); 1055 1056 if (tkip_data.have_tkip_keys) { 1057 /* send relevant data according to CMD version */ 1058 ret = iwl_mvm_send_cmd_pdu(mvm, 1059 WOWLAN_TKIP_PARAM, 1060 CMD_ASYNC, size, 1061 &tkip_data.tkip); 1062 if (ret) 1063 return ret; 1064 } 1065 } 1066 1067 /* configure rekey data only if offloaded rekey is supported (d3) */ 1068 if (mvmvif->rekey_data.valid) { 1069 struct iwl_wowlan_kek_kck_material_cmd_v4 kek_kck_cmd = {}; 1070 struct iwl_wowlan_kek_kck_material_cmd_v4 *_kek_kck_cmd = 1071 &kek_kck_cmd; 1072 struct wowlan_key_gtk_type_iter gtk_type_data = { 1073 .kek_kck_cmd = _kek_kck_cmd, 1074 }; 1075 1076 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, 1077 WOWLAN_KEK_KCK_MATERIAL, 1078 IWL_FW_CMD_VER_UNKNOWN); 1079 if (WARN_ON(cmd_ver != 2 && cmd_ver != 3 && cmd_ver != 4 && 1080 cmd_ver != IWL_FW_CMD_VER_UNKNOWN)) 1081 return -EINVAL; 1082 1083 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_gtk_type_iter, 1084 >k_type_data); 1085 1086 memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck, 1087 mvmvif->rekey_data.kck_len); 1088 kek_kck_cmd.kck_len = cpu_to_le16(mvmvif->rekey_data.kck_len); 1089 memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek, 1090 mvmvif->rekey_data.kek_len); 1091 kek_kck_cmd.kek_len = cpu_to_le16(mvmvif->rekey_data.kek_len); 1092 kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr; 1093 kek_kck_cmd.akm = cpu_to_le32(mvmvif->rekey_data.akm); 1094 kek_kck_cmd.sta_id = cpu_to_le32(mvm_link->ap_sta_id); 1095 1096 if (cmd_ver == 4) { 1097 cmd_size = sizeof(struct iwl_wowlan_kek_kck_material_cmd_v4); 1098 } else { 1099 if (cmd_ver == 3) 1100 cmd_size = 1101 sizeof(struct iwl_wowlan_kek_kck_material_cmd_v3); 1102 else 1103 cmd_size = 1104 sizeof(struct iwl_wowlan_kek_kck_material_cmd_v2); 1105 /* skip the sta_id at the beginning */ 1106 _kek_kck_cmd = (void *) 1107 ((u8 *)_kek_kck_cmd + sizeof(kek_kck_cmd.sta_id)); 1108 } 1109 1110 IWL_DEBUG_WOWLAN(mvm, "setting akm %d\n", 1111 mvmvif->rekey_data.akm); 1112 1113 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_KEK_KCK_MATERIAL, 1114 CMD_ASYNC, cmd_size, _kek_kck_cmd); 1115 if (ret) 1116 return ret; 1117 } 1118 1119 return 0; 1120 } 1121 1122 static int 1123 iwl_mvm_wowlan_config(struct iwl_mvm *mvm, 1124 struct cfg80211_wowlan *wowlan, 1125 struct iwl_wowlan_config_cmd *wowlan_config_cmd, 1126 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif, 1127 struct iwl_mvm_vif_link_info *mvm_link, 1128 struct ieee80211_sta *ap_sta) 1129 { 1130 int ret; 1131 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 1132 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1133 1134 mvm->offload_tid = wowlan_config_cmd->offloading_tid; 1135 1136 if (!unified_image) { 1137 ret = iwl_mvm_switch_to_d3(mvm); 1138 if (ret) 1139 return ret; 1140 1141 ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta); 1142 if (ret) 1143 return ret; 1144 } 1145 1146 ret = iwl_mvm_wowlan_config_key_params(mvm, vif, mvm_link); 1147 if (ret) 1148 return ret; 1149 1150 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0, 1151 sizeof(*wowlan_config_cmd), 1152 wowlan_config_cmd); 1153 if (ret) 1154 return ret; 1155 1156 if (fw_has_api(&mvm->fw->ucode_capa, 1157 IWL_UCODE_TLV_API_WOWLAN_TCP_SYN_WAKE)) 1158 ret = iwl_mvm_send_patterns(mvm, mvm_link, wowlan); 1159 else 1160 ret = iwl_mvm_send_patterns_v1(mvm, wowlan); 1161 if (ret) 1162 return ret; 1163 1164 return iwl_mvm_send_proto_offload(mvm, vif, false, true, 0, 1165 mvm_link->ap_sta_id); 1166 } 1167 1168 static int 1169 iwl_mvm_netdetect_config(struct iwl_mvm *mvm, 1170 struct cfg80211_wowlan *wowlan, 1171 struct cfg80211_sched_scan_request *nd_config, 1172 struct ieee80211_vif *vif) 1173 { 1174 int ret; 1175 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 1176 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1177 1178 if (!unified_image) { 1179 ret = iwl_mvm_switch_to_d3(mvm); 1180 if (ret) 1181 return ret; 1182 } else { 1183 /* In theory, we wouldn't have to stop a running sched 1184 * scan in order to start another one (for 1185 * net-detect). But in practice this doesn't seem to 1186 * work properly, so stop any running sched_scan now. 1187 */ 1188 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 1189 if (ret) 1190 return ret; 1191 } 1192 1193 ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies, 1194 IWL_MVM_SCAN_NETDETECT); 1195 if (ret) 1196 return ret; 1197 1198 if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels)) 1199 return -EBUSY; 1200 1201 /* save the sched scan matchsets... */ 1202 if (nd_config->n_match_sets) { 1203 mvm->nd_match_sets = kmemdup(nd_config->match_sets, 1204 sizeof(*nd_config->match_sets) * 1205 nd_config->n_match_sets, 1206 GFP_KERNEL); 1207 if (mvm->nd_match_sets) 1208 mvm->n_nd_match_sets = nd_config->n_match_sets; 1209 } 1210 1211 /* ...and the sched scan channels for later reporting */ 1212 mvm->nd_channels = kmemdup(nd_config->channels, 1213 sizeof(*nd_config->channels) * 1214 nd_config->n_channels, 1215 GFP_KERNEL); 1216 if (mvm->nd_channels) 1217 mvm->n_nd_channels = nd_config->n_channels; 1218 1219 return 0; 1220 } 1221 1222 static void iwl_mvm_free_nd(struct iwl_mvm *mvm) 1223 { 1224 kfree(mvm->nd_match_sets); 1225 mvm->nd_match_sets = NULL; 1226 mvm->n_nd_match_sets = 0; 1227 kfree(mvm->nd_channels); 1228 mvm->nd_channels = NULL; 1229 mvm->n_nd_channels = 0; 1230 } 1231 1232 static int __iwl_mvm_suspend(struct ieee80211_hw *hw, 1233 struct cfg80211_wowlan *wowlan, 1234 bool test) 1235 { 1236 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1237 struct ieee80211_vif *vif = NULL; 1238 struct iwl_mvm_vif *mvmvif = NULL; 1239 struct ieee80211_sta *ap_sta = NULL; 1240 struct iwl_mvm_vif_link_info *mvm_link; 1241 struct iwl_d3_manager_config d3_cfg_cmd_data = { 1242 /* 1243 * Program the minimum sleep time to 10 seconds, as many 1244 * platforms have issues processing a wakeup signal while 1245 * still being in the process of suspending. 1246 */ 1247 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000), 1248 }; 1249 struct iwl_host_cmd d3_cfg_cmd = { 1250 .id = D3_CONFIG_CMD, 1251 .flags = CMD_WANT_SKB | CMD_SEND_IN_D3, 1252 .data[0] = &d3_cfg_cmd_data, 1253 .len[0] = sizeof(d3_cfg_cmd_data), 1254 }; 1255 int ret; 1256 int len __maybe_unused; 1257 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 1258 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1259 1260 if (!wowlan) { 1261 /* 1262 * mac80211 shouldn't get here, but for D3 test 1263 * it doesn't warrant a warning 1264 */ 1265 WARN_ON(!test); 1266 return -EINVAL; 1267 } 1268 1269 vif = iwl_mvm_get_bss_vif(mvm); 1270 if (IS_ERR_OR_NULL(vif)) 1271 return 1; 1272 1273 ret = iwl_mvm_block_esr_sync(mvm, vif, IWL_MVM_ESR_BLOCKED_WOWLAN); 1274 if (ret) 1275 return ret; 1276 1277 mutex_lock(&mvm->mutex); 1278 1279 set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 1280 1281 synchronize_net(); 1282 1283 mvmvif = iwl_mvm_vif_from_mac80211(vif); 1284 1285 mvm_link = mvmvif->link[iwl_mvm_get_primary_link(vif)]; 1286 if (WARN_ON_ONCE(!mvm_link)) { 1287 ret = -EINVAL; 1288 goto out_noreset; 1289 } 1290 1291 if (mvm_link->ap_sta_id == IWL_MVM_INVALID_STA) { 1292 /* if we're not associated, this must be netdetect */ 1293 if (!wowlan->nd_config) { 1294 ret = 1; 1295 goto out_noreset; 1296 } 1297 1298 ret = iwl_mvm_netdetect_config( 1299 mvm, wowlan, wowlan->nd_config, vif); 1300 if (ret) 1301 goto out; 1302 1303 mvm->net_detect = true; 1304 } else { 1305 struct iwl_wowlan_config_cmd wowlan_config_cmd = { 1306 .offloading_tid = 0, 1307 }; 1308 1309 wowlan_config_cmd.sta_id = mvm_link->ap_sta_id; 1310 1311 ap_sta = rcu_dereference_protected( 1312 mvm->fw_id_to_mac_id[mvm_link->ap_sta_id], 1313 lockdep_is_held(&mvm->mutex)); 1314 if (IS_ERR_OR_NULL(ap_sta)) { 1315 ret = -EINVAL; 1316 goto out_noreset; 1317 } 1318 1319 ret = iwl_mvm_sta_ensure_queue( 1320 mvm, ap_sta->txq[wowlan_config_cmd.offloading_tid]); 1321 if (ret) 1322 goto out_noreset; 1323 1324 ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd, 1325 vif, mvmvif, ap_sta); 1326 if (ret) 1327 goto out_noreset; 1328 ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd, 1329 vif, mvmvif, mvm_link, ap_sta); 1330 if (ret) 1331 goto out; 1332 1333 mvm->net_detect = false; 1334 } 1335 1336 ret = iwl_mvm_power_update_device(mvm); 1337 if (ret) 1338 goto out; 1339 1340 ret = iwl_mvm_power_update_mac(mvm); 1341 if (ret) 1342 goto out; 1343 1344 #ifdef CONFIG_IWLWIFI_DEBUGFS 1345 if (mvm->d3_wake_sysassert) 1346 d3_cfg_cmd_data.wakeup_flags |= 1347 cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR); 1348 #endif 1349 1350 /* 1351 * Prior to 9000 device family the driver needs to stop the dbg 1352 * recording before entering D3. In later devices the FW stops the 1353 * recording automatically. 1354 */ 1355 if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_9000) 1356 iwl_fw_dbg_stop_restart_recording(&mvm->fwrt, NULL, true); 1357 1358 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_D3; 1359 1360 /* must be last -- this switches firmware state */ 1361 ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd); 1362 if (ret) 1363 goto out; 1364 #ifdef CONFIG_IWLWIFI_DEBUGFS 1365 len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt); 1366 if (len >= sizeof(u32)) { 1367 mvm->d3_test_pme_ptr = 1368 le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data); 1369 } 1370 #endif 1371 iwl_free_resp(&d3_cfg_cmd); 1372 1373 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1374 1375 ret = iwl_trans_d3_suspend(mvm->trans, test, !unified_image); 1376 out: 1377 if (ret < 0) { 1378 iwl_mvm_free_nd(mvm); 1379 1380 if (!unified_image) { 1381 if (mvm->fw_restart > 0) { 1382 mvm->fw_restart--; 1383 ieee80211_restart_hw(mvm->hw); 1384 } 1385 } 1386 1387 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 1388 } 1389 out_noreset: 1390 mutex_unlock(&mvm->mutex); 1391 1392 return ret; 1393 } 1394 1395 int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) 1396 { 1397 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1398 1399 iwl_mvm_pause_tcm(mvm, true); 1400 1401 mutex_lock(&mvm->mutex); 1402 iwl_fw_runtime_suspend(&mvm->fwrt); 1403 mutex_unlock(&mvm->mutex); 1404 1405 return __iwl_mvm_suspend(hw, wowlan, false); 1406 } 1407 1408 struct iwl_multicast_key_data { 1409 u8 key[WOWLAN_KEY_MAX_SIZE]; 1410 u8 len; 1411 u8 flags; 1412 u8 id; 1413 u8 ipn[6]; 1414 }; 1415 1416 /* converted data from the different status responses */ 1417 struct iwl_wowlan_status_data { 1418 u64 replay_ctr; 1419 u32 num_of_gtk_rekeys; 1420 u32 received_beacons; 1421 u32 wakeup_reasons; 1422 u32 wake_packet_length; 1423 u32 wake_packet_bufsize; 1424 u16 pattern_number; 1425 u16 non_qos_seq_ctr; 1426 u16 qos_seq_ctr[8]; 1427 u8 tid_tear_down; 1428 1429 struct { 1430 /* including RX MIC key for TKIP */ 1431 u8 key[WOWLAN_KEY_MAX_SIZE]; 1432 u8 len; 1433 u8 flags; 1434 u8 id; 1435 } gtk[WOWLAN_GTK_KEYS_NUM]; 1436 1437 struct { 1438 /* 1439 * We store both the TKIP and AES representations 1440 * coming from the firmware because we decode the 1441 * data from there before we iterate the keys and 1442 * know which one we need. 1443 */ 1444 struct { 1445 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT]; 1446 } tkip, aes; 1447 1448 /* 1449 * We use -1 for when we have valid data but don't know 1450 * the key ID from firmware, and thus it needs to be 1451 * installed with the last key (depending on rekeying). 1452 */ 1453 s8 key_id; 1454 bool valid; 1455 } gtk_seq[2]; 1456 1457 struct { 1458 /* Same as above */ 1459 struct { 1460 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT]; 1461 u64 tx_pn; 1462 } tkip, aes; 1463 } ptk; 1464 1465 struct iwl_multicast_key_data igtk; 1466 struct iwl_multicast_key_data bigtk[WOWLAN_BIGTK_KEYS_NUM]; 1467 1468 int num_mlo_keys; 1469 struct iwl_wowlan_mlo_gtk mlo_keys[WOWLAN_MAX_MLO_KEYS]; 1470 1471 u8 *wake_packet; 1472 }; 1473 1474 static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm, 1475 struct ieee80211_vif *vif, 1476 struct iwl_wowlan_status_data *status) 1477 { 1478 struct sk_buff *pkt = NULL; 1479 struct cfg80211_wowlan_wakeup wakeup = { 1480 .pattern_idx = -1, 1481 }; 1482 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; 1483 u32 reasons = status->wakeup_reasons; 1484 1485 if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) { 1486 wakeup_report = NULL; 1487 goto report; 1488 } 1489 1490 pm_wakeup_event(mvm->dev, 0); 1491 1492 if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET) 1493 wakeup.magic_pkt = true; 1494 1495 if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN) 1496 wakeup.pattern_idx = 1497 status->pattern_number; 1498 1499 if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 1500 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH | 1501 IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)) 1502 wakeup.disconnect = true; 1503 1504 if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE) 1505 wakeup.gtk_rekey_failure = true; 1506 1507 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 1508 wakeup.rfkill_release = true; 1509 1510 if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST) 1511 wakeup.eap_identity_req = true; 1512 1513 if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE) 1514 wakeup.four_way_handshake = true; 1515 1516 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS) 1517 wakeup.tcp_connlost = true; 1518 1519 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE) 1520 wakeup.tcp_nomoretokens = true; 1521 1522 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET) 1523 wakeup.tcp_match = true; 1524 1525 if (reasons & IWL_WAKEUP_BY_11W_UNPROTECTED_DEAUTH_OR_DISASSOC) 1526 wakeup.unprot_deauth_disassoc = true; 1527 1528 if (status->wake_packet) { 1529 int pktsize = status->wake_packet_bufsize; 1530 int pktlen = status->wake_packet_length; 1531 const u8 *pktdata = status->wake_packet; 1532 const struct ieee80211_hdr *hdr = (const void *)pktdata; 1533 int truncated = pktlen - pktsize; 1534 1535 /* this would be a firmware bug */ 1536 if (WARN_ON_ONCE(truncated < 0)) 1537 truncated = 0; 1538 1539 if (ieee80211_is_data(hdr->frame_control)) { 1540 int hdrlen = ieee80211_hdrlen(hdr->frame_control); 1541 int ivlen = 0, icvlen = 4; /* also FCS */ 1542 1543 pkt = alloc_skb(pktsize, GFP_KERNEL); 1544 if (!pkt) 1545 goto report; 1546 1547 skb_put_data(pkt, pktdata, hdrlen); 1548 pktdata += hdrlen; 1549 pktsize -= hdrlen; 1550 1551 if (ieee80211_has_protected(hdr->frame_control)) { 1552 /* 1553 * This is unlocked and using gtk_i(c)vlen, 1554 * but since everything is under RTNL still 1555 * that's not really a problem - changing 1556 * it would be difficult. 1557 */ 1558 if (is_multicast_ether_addr(hdr->addr1)) { 1559 ivlen = mvm->gtk_ivlen; 1560 icvlen += mvm->gtk_icvlen; 1561 } else { 1562 ivlen = mvm->ptk_ivlen; 1563 icvlen += mvm->ptk_icvlen; 1564 } 1565 } 1566 1567 /* if truncated, FCS/ICV is (partially) gone */ 1568 if (truncated >= icvlen) { 1569 icvlen = 0; 1570 truncated -= icvlen; 1571 } else { 1572 icvlen -= truncated; 1573 truncated = 0; 1574 } 1575 1576 pktsize -= ivlen + icvlen; 1577 pktdata += ivlen; 1578 1579 skb_put_data(pkt, pktdata, pktsize); 1580 1581 if (ieee80211_data_to_8023(pkt, vif->addr, vif->type)) 1582 goto report; 1583 wakeup.packet = pkt->data; 1584 wakeup.packet_present_len = pkt->len; 1585 wakeup.packet_len = pkt->len - truncated; 1586 wakeup.packet_80211 = false; 1587 } else { 1588 int fcslen = 4; 1589 1590 if (truncated >= 4) { 1591 truncated -= 4; 1592 fcslen = 0; 1593 } else { 1594 fcslen -= truncated; 1595 truncated = 0; 1596 } 1597 pktsize -= fcslen; 1598 wakeup.packet = status->wake_packet; 1599 wakeup.packet_present_len = pktsize; 1600 wakeup.packet_len = pktlen - truncated; 1601 wakeup.packet_80211 = true; 1602 } 1603 } 1604 1605 report: 1606 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); 1607 kfree_skb(pkt); 1608 } 1609 1610 static void iwl_mvm_le64_to_aes_seq(__le64 le_pn, struct ieee80211_key_seq *seq) 1611 { 1612 u64 pn = le64_to_cpu(le_pn); 1613 1614 seq->ccmp.pn[0] = pn >> 40; 1615 seq->ccmp.pn[1] = pn >> 32; 1616 seq->ccmp.pn[2] = pn >> 24; 1617 seq->ccmp.pn[3] = pn >> 16; 1618 seq->ccmp.pn[4] = pn >> 8; 1619 seq->ccmp.pn[5] = pn; 1620 } 1621 1622 static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc, 1623 struct ieee80211_key_seq *seq) 1624 { 1625 iwl_mvm_le64_to_aes_seq(sc->pn, seq); 1626 } 1627 1628 static void iwl_mvm_le64_to_tkip_seq(__le64 le_pn, struct ieee80211_key_seq *seq) 1629 { 1630 u64 pn = le64_to_cpu(le_pn); 1631 1632 seq->tkip.iv16 = (u16)pn; 1633 seq->tkip.iv32 = (u32)(pn >> 16); 1634 } 1635 1636 static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc, 1637 struct ieee80211_key_seq *seq) 1638 { 1639 seq->tkip.iv32 = le32_to_cpu(sc->iv32); 1640 seq->tkip.iv16 = le16_to_cpu(sc->iv16); 1641 } 1642 1643 static void iwl_mvm_set_key_rx_seq_tids(struct ieee80211_key_conf *key, 1644 struct ieee80211_key_seq *seq) 1645 { 1646 int tid; 1647 1648 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) 1649 ieee80211_set_key_rx_seq(key, tid, &seq[tid]); 1650 } 1651 1652 static void iwl_mvm_set_aes_ptk_rx_seq(struct iwl_mvm *mvm, 1653 struct iwl_wowlan_status_data *status, 1654 struct ieee80211_sta *sta, 1655 struct ieee80211_key_conf *key) 1656 { 1657 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1658 struct iwl_mvm_key_pn *ptk_pn; 1659 int tid; 1660 1661 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.aes.seq); 1662 1663 if (!iwl_mvm_has_new_rx_api(mvm)) 1664 return; 1665 1666 1667 rcu_read_lock(); 1668 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]); 1669 if (WARN_ON(!ptk_pn)) { 1670 rcu_read_unlock(); 1671 return; 1672 } 1673 1674 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1675 int i; 1676 1677 for (i = 1; i < mvm->trans->num_rx_queues; i++) 1678 memcpy(ptk_pn->q[i].pn[tid], 1679 status->ptk.aes.seq[tid].ccmp.pn, 1680 IEEE80211_CCMP_PN_LEN); 1681 } 1682 rcu_read_unlock(); 1683 } 1684 1685 static void iwl_mvm_convert_key_counters(struct iwl_wowlan_status_data *status, 1686 union iwl_all_tsc_rsc *sc) 1687 { 1688 int i; 1689 1690 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT); 1691 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC); 1692 1693 /* GTK RX counters */ 1694 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1695 iwl_mvm_tkip_sc_to_seq(&sc->tkip.multicast_rsc[i], 1696 &status->gtk_seq[0].tkip.seq[i]); 1697 iwl_mvm_aes_sc_to_seq(&sc->aes.multicast_rsc[i], 1698 &status->gtk_seq[0].aes.seq[i]); 1699 } 1700 status->gtk_seq[0].valid = true; 1701 status->gtk_seq[0].key_id = -1; 1702 1703 /* PTK TX counter */ 1704 status->ptk.tkip.tx_pn = (u64)le16_to_cpu(sc->tkip.tsc.iv16) | 1705 ((u64)le32_to_cpu(sc->tkip.tsc.iv32) << 16); 1706 status->ptk.aes.tx_pn = le64_to_cpu(sc->aes.tsc.pn); 1707 1708 /* PTK RX counters */ 1709 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1710 iwl_mvm_tkip_sc_to_seq(&sc->tkip.unicast_rsc[i], 1711 &status->ptk.tkip.seq[i]); 1712 iwl_mvm_aes_sc_to_seq(&sc->aes.unicast_rsc[i], 1713 &status->ptk.aes.seq[i]); 1714 } 1715 } 1716 1717 static void 1718 iwl_mvm_convert_key_counters_v5_gtk_seq(struct iwl_wowlan_status_data *status, 1719 struct iwl_wowlan_all_rsc_tsc_v5 *sc, 1720 unsigned int idx, unsigned int key_id) 1721 { 1722 int tid; 1723 1724 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1725 iwl_mvm_le64_to_tkip_seq(sc->mcast_rsc[idx][tid], 1726 &status->gtk_seq[idx].tkip.seq[tid]); 1727 iwl_mvm_le64_to_aes_seq(sc->mcast_rsc[idx][tid], 1728 &status->gtk_seq[idx].aes.seq[tid]); 1729 } 1730 1731 status->gtk_seq[idx].valid = true; 1732 status->gtk_seq[idx].key_id = key_id; 1733 } 1734 1735 static void 1736 iwl_mvm_convert_key_counters_v5(struct iwl_wowlan_status_data *status, 1737 struct iwl_wowlan_all_rsc_tsc_v5 *sc) 1738 { 1739 int i, tid; 1740 1741 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT); 1742 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC); 1743 BUILD_BUG_ON(ARRAY_SIZE(sc->mcast_rsc) != ARRAY_SIZE(status->gtk_seq)); 1744 1745 /* GTK RX counters */ 1746 for (i = 0; i < ARRAY_SIZE(sc->mcast_key_id_map); i++) { 1747 u8 entry = sc->mcast_key_id_map[i]; 1748 1749 if (entry < ARRAY_SIZE(sc->mcast_rsc)) 1750 iwl_mvm_convert_key_counters_v5_gtk_seq(status, sc, 1751 entry, i); 1752 } 1753 1754 /* PTK TX counters not needed, assigned in device */ 1755 1756 /* PTK RX counters */ 1757 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1758 iwl_mvm_le64_to_tkip_seq(sc->ucast_rsc[tid], 1759 &status->ptk.tkip.seq[tid]); 1760 iwl_mvm_le64_to_aes_seq(sc->ucast_rsc[tid], 1761 &status->ptk.aes.seq[tid]); 1762 } 1763 } 1764 1765 static void iwl_mvm_set_key_rx_seq_idx(struct ieee80211_key_conf *key, 1766 struct iwl_wowlan_status_data *status, 1767 int idx) 1768 { 1769 switch (key->cipher) { 1770 case WLAN_CIPHER_SUITE_CCMP: 1771 case WLAN_CIPHER_SUITE_GCMP: 1772 case WLAN_CIPHER_SUITE_GCMP_256: 1773 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].aes.seq); 1774 break; 1775 case WLAN_CIPHER_SUITE_TKIP: 1776 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].tkip.seq); 1777 break; 1778 default: 1779 WARN_ON(1); 1780 } 1781 } 1782 1783 static void iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf *key, 1784 struct iwl_wowlan_status_data *status, 1785 bool installed) 1786 { 1787 int i; 1788 1789 for (i = 0; i < ARRAY_SIZE(status->gtk_seq); i++) { 1790 if (!status->gtk_seq[i].valid) 1791 continue; 1792 1793 /* Handle the case where we know the key ID */ 1794 if (status->gtk_seq[i].key_id == key->keyidx) { 1795 s8 new_key_id = -1; 1796 1797 if (status->num_of_gtk_rekeys) 1798 new_key_id = status->gtk[0].flags & 1799 IWL_WOWLAN_GTK_IDX_MASK; 1800 1801 /* Don't install a new key's value to an old key */ 1802 if (new_key_id != key->keyidx) 1803 iwl_mvm_set_key_rx_seq_idx(key, status, i); 1804 continue; 1805 } 1806 1807 /* handle the case where we didn't, last key only */ 1808 if (status->gtk_seq[i].key_id == -1 && 1809 (!status->num_of_gtk_rekeys || installed)) 1810 iwl_mvm_set_key_rx_seq_idx(key, status, i); 1811 } 1812 } 1813 1814 struct iwl_mvm_d3_gtk_iter_data { 1815 struct iwl_mvm *mvm; 1816 struct iwl_wowlan_status_data *status; 1817 u32 gtk_cipher, igtk_cipher, bigtk_cipher; 1818 bool unhandled_cipher, igtk_support, bigtk_support; 1819 int num_keys; 1820 }; 1821 1822 static void iwl_mvm_d3_find_last_keys(struct ieee80211_hw *hw, 1823 struct ieee80211_vif *vif, 1824 struct ieee80211_sta *sta, 1825 struct ieee80211_key_conf *key, 1826 void *_data) 1827 { 1828 struct iwl_mvm_d3_gtk_iter_data *data = _data; 1829 int link_id = vif->active_links ? __ffs(vif->active_links) : -1; 1830 1831 if (link_id >= 0 && key->link_id >= 0 && link_id != key->link_id) 1832 return; 1833 1834 if (data->unhandled_cipher) 1835 return; 1836 1837 switch (key->cipher) { 1838 case WLAN_CIPHER_SUITE_WEP40: 1839 case WLAN_CIPHER_SUITE_WEP104: 1840 /* ignore WEP completely, nothing to do */ 1841 return; 1842 case WLAN_CIPHER_SUITE_CCMP: 1843 case WLAN_CIPHER_SUITE_GCMP: 1844 case WLAN_CIPHER_SUITE_GCMP_256: 1845 case WLAN_CIPHER_SUITE_TKIP: 1846 /* we support these */ 1847 data->gtk_cipher = key->cipher; 1848 break; 1849 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 1850 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 1851 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 1852 case WLAN_CIPHER_SUITE_AES_CMAC: 1853 /* we support these */ 1854 if (data->igtk_support && 1855 (key->keyidx == 4 || key->keyidx == 5)) { 1856 data->igtk_cipher = key->cipher; 1857 } else if (data->bigtk_support && 1858 (key->keyidx == 6 || key->keyidx == 7)) { 1859 data->bigtk_cipher = key->cipher; 1860 } else { 1861 data->unhandled_cipher = true; 1862 return; 1863 } 1864 break; 1865 default: 1866 /* everything else - disconnect from AP */ 1867 data->unhandled_cipher = true; 1868 return; 1869 } 1870 1871 data->num_keys++; 1872 } 1873 1874 static void 1875 iwl_mvm_d3_set_igtk_bigtk_ipn(const struct iwl_multicast_key_data *key, 1876 struct ieee80211_key_seq *seq, u32 cipher) 1877 { 1878 switch (cipher) { 1879 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 1880 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 1881 BUILD_BUG_ON(sizeof(seq->aes_gmac.pn) != sizeof(key->ipn)); 1882 memcpy(seq->aes_gmac.pn, key->ipn, sizeof(seq->aes_gmac.pn)); 1883 break; 1884 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 1885 case WLAN_CIPHER_SUITE_AES_CMAC: 1886 BUILD_BUG_ON(sizeof(seq->aes_cmac.pn) != sizeof(key->ipn)); 1887 memcpy(seq->aes_cmac.pn, key->ipn, sizeof(seq->aes_cmac.pn)); 1888 break; 1889 default: 1890 WARN_ON(1); 1891 } 1892 } 1893 1894 static void 1895 iwl_mvm_d3_update_igtk_bigtk(struct iwl_wowlan_status_data *status, 1896 struct ieee80211_key_conf *key, 1897 struct iwl_multicast_key_data *key_data) 1898 { 1899 if (status->num_of_gtk_rekeys && key_data->len) { 1900 /* remove rekeyed key */ 1901 ieee80211_remove_key(key); 1902 } else { 1903 struct ieee80211_key_seq seq; 1904 1905 iwl_mvm_d3_set_igtk_bigtk_ipn(key_data, 1906 &seq, 1907 key->cipher); 1908 ieee80211_set_key_rx_seq(key, 0, &seq); 1909 } 1910 } 1911 1912 static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw, 1913 struct ieee80211_vif *vif, 1914 struct ieee80211_sta *sta, 1915 struct ieee80211_key_conf *key, 1916 void *_data) 1917 { 1918 struct iwl_mvm_d3_gtk_iter_data *data = _data; 1919 struct iwl_wowlan_status_data *status = data->status; 1920 s8 keyidx; 1921 int link_id = vif->active_links ? __ffs(vif->active_links) : -1; 1922 1923 if (link_id >= 0 && key->link_id >= 0 && link_id != key->link_id) 1924 return; 1925 1926 if (data->unhandled_cipher) 1927 return; 1928 1929 switch (key->cipher) { 1930 case WLAN_CIPHER_SUITE_WEP40: 1931 case WLAN_CIPHER_SUITE_WEP104: 1932 /* ignore WEP completely, nothing to do */ 1933 return; 1934 case WLAN_CIPHER_SUITE_CCMP: 1935 case WLAN_CIPHER_SUITE_GCMP: 1936 case WLAN_CIPHER_SUITE_GCMP_256: 1937 if (sta) { 1938 atomic64_set(&key->tx_pn, status->ptk.aes.tx_pn); 1939 iwl_mvm_set_aes_ptk_rx_seq(data->mvm, status, sta, key); 1940 return; 1941 } 1942 fallthrough; 1943 case WLAN_CIPHER_SUITE_TKIP: 1944 if (sta) { 1945 atomic64_set(&key->tx_pn, status->ptk.tkip.tx_pn); 1946 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.tkip.seq); 1947 return; 1948 } 1949 keyidx = key->keyidx; 1950 /* The current key is always sent by the FW, even if it wasn't 1951 * rekeyed during D3. 1952 * We remove an existing key if it has the same index as 1953 * a new key 1954 */ 1955 if (status->num_of_gtk_rekeys && 1956 ((status->gtk[0].len && keyidx == status->gtk[0].id) || 1957 (status->gtk[1].len && keyidx == status->gtk[1].id))) { 1958 ieee80211_remove_key(key); 1959 } else { 1960 iwl_mvm_set_key_rx_seq(key, data->status, false); 1961 } 1962 break; 1963 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 1964 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 1965 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 1966 case WLAN_CIPHER_SUITE_AES_CMAC: 1967 if (key->keyidx == 4 || key->keyidx == 5) { 1968 iwl_mvm_d3_update_igtk_bigtk(status, key, 1969 &status->igtk); 1970 } 1971 if (key->keyidx == 6 || key->keyidx == 7) { 1972 u8 idx = key->keyidx == status->bigtk[1].id; 1973 1974 iwl_mvm_d3_update_igtk_bigtk(status, key, 1975 &status->bigtk[idx]); 1976 } 1977 } 1978 } 1979 1980 struct iwl_mvm_d3_mlo_old_keys { 1981 u32 cipher[IEEE80211_MLD_MAX_NUM_LINKS][WOWLAN_MLO_GTK_KEY_NUM_TYPES]; 1982 struct ieee80211_key_conf *key[IEEE80211_MLD_MAX_NUM_LINKS][8]; 1983 }; 1984 1985 static void iwl_mvm_mlo_key_ciphers(struct ieee80211_hw *hw, 1986 struct ieee80211_vif *vif, 1987 struct ieee80211_sta *sta, 1988 struct ieee80211_key_conf *key, 1989 void *data) 1990 { 1991 struct iwl_mvm_d3_mlo_old_keys *old_keys = data; 1992 enum iwl_wowlan_mlo_gtk_type key_type; 1993 1994 if (key->link_id < 0) 1995 return; 1996 1997 if (WARN_ON(key->link_id >= IEEE80211_MLD_MAX_NUM_LINKS || 1998 key->keyidx >= 8)) 1999 return; 2000 2001 if (WARN_ON(old_keys->key[key->link_id][key->keyidx])) 2002 return; 2003 2004 switch (key->cipher) { 2005 case WLAN_CIPHER_SUITE_CCMP: 2006 case WLAN_CIPHER_SUITE_GCMP: 2007 case WLAN_CIPHER_SUITE_GCMP_256: 2008 key_type = WOWLAN_MLO_GTK_KEY_TYPE_GTK; 2009 break; 2010 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 2011 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 2012 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 2013 case WLAN_CIPHER_SUITE_AES_CMAC: 2014 if (key->keyidx == 4 || key->keyidx == 5) { 2015 key_type = WOWLAN_MLO_GTK_KEY_TYPE_IGTK; 2016 break; 2017 } else if (key->keyidx == 6 || key->keyidx == 7) { 2018 key_type = WOWLAN_MLO_GTK_KEY_TYPE_BIGTK; 2019 break; 2020 } 2021 return; 2022 default: 2023 /* ignore WEP/TKIP or unknown ciphers */ 2024 return; 2025 } 2026 2027 old_keys->cipher[key->link_id][key_type] = key->cipher; 2028 old_keys->key[key->link_id][key->keyidx] = key; 2029 } 2030 2031 static bool iwl_mvm_mlo_gtk_rekey(struct iwl_wowlan_status_data *status, 2032 struct ieee80211_vif *vif, 2033 struct iwl_mvm *mvm) 2034 { 2035 int i; 2036 struct iwl_mvm_d3_mlo_old_keys *old_keys; 2037 bool ret = true; 2038 2039 IWL_DEBUG_WOWLAN(mvm, "Num of MLO Keys: %d\n", status->num_mlo_keys); 2040 if (!status->num_mlo_keys) 2041 return true; 2042 2043 old_keys = kzalloc(sizeof(*old_keys), GFP_KERNEL); 2044 if (!old_keys) 2045 return false; 2046 2047 /* find the cipher for each mlo key */ 2048 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_mlo_key_ciphers, old_keys); 2049 2050 for (i = 0; i < status->num_mlo_keys; i++) { 2051 struct iwl_wowlan_mlo_gtk *mlo_key = &status->mlo_keys[i]; 2052 struct ieee80211_key_conf *key, *old_key; 2053 struct ieee80211_key_seq seq; 2054 struct { 2055 struct ieee80211_key_conf conf; 2056 u8 key[32]; 2057 } conf = {}; 2058 u16 flags = le16_to_cpu(mlo_key->flags); 2059 int j, link_id, key_id, key_type; 2060 2061 link_id = u16_get_bits(flags, WOWLAN_MLO_GTK_FLAG_LINK_ID_MSK); 2062 key_id = u16_get_bits(flags, WOWLAN_MLO_GTK_FLAG_KEY_ID_MSK); 2063 key_type = u16_get_bits(flags, 2064 WOWLAN_MLO_GTK_FLAG_KEY_TYPE_MSK); 2065 2066 if (!(vif->valid_links & BIT(link_id))) 2067 continue; 2068 2069 if (WARN_ON(link_id >= IEEE80211_MLD_MAX_NUM_LINKS || 2070 key_id >= 8 || 2071 key_type >= WOWLAN_MLO_GTK_KEY_NUM_TYPES)) 2072 continue; 2073 2074 conf.conf.cipher = old_keys->cipher[link_id][key_type]; 2075 /* WARN_ON? */ 2076 if (!conf.conf.cipher) 2077 continue; 2078 2079 conf.conf.keylen = 0; 2080 switch (conf.conf.cipher) { 2081 case WLAN_CIPHER_SUITE_CCMP: 2082 case WLAN_CIPHER_SUITE_GCMP: 2083 conf.conf.keylen = WLAN_KEY_LEN_CCMP; 2084 break; 2085 case WLAN_CIPHER_SUITE_GCMP_256: 2086 conf.conf.keylen = WLAN_KEY_LEN_GCMP_256; 2087 break; 2088 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 2089 conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_128; 2090 break; 2091 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 2092 conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_256; 2093 break; 2094 case WLAN_CIPHER_SUITE_AES_CMAC: 2095 conf.conf.keylen = WLAN_KEY_LEN_AES_CMAC; 2096 break; 2097 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 2098 conf.conf.keylen = WLAN_KEY_LEN_BIP_CMAC_256; 2099 break; 2100 } 2101 2102 if (WARN_ON(!conf.conf.keylen || 2103 conf.conf.keylen > sizeof(conf.key))) 2104 continue; 2105 2106 memcpy(conf.conf.key, mlo_key->key, conf.conf.keylen); 2107 conf.conf.keyidx = key_id; 2108 2109 old_key = old_keys->key[link_id][key_id]; 2110 if (old_key) { 2111 IWL_DEBUG_WOWLAN(mvm, 2112 "Remove MLO key id %d, link id %d\n", 2113 key_id, link_id); 2114 ieee80211_remove_key(old_key); 2115 } 2116 2117 IWL_DEBUG_WOWLAN(mvm, "Add MLO key id %d, link id %d\n", 2118 key_id, link_id); 2119 key = ieee80211_gtk_rekey_add(vif, &conf.conf, link_id); 2120 if (WARN_ON(IS_ERR(key))) { 2121 ret = false; 2122 goto out; 2123 } 2124 2125 /* 2126 * mac80211 expects the pn in big-endian 2127 * also note that seq is a union of all cipher types 2128 * (ccmp, gcmp, cmac, gmac), and they all have the same 2129 * pn field (of length 6) so just copy it to ccmp.pn. 2130 */ 2131 for (j = 5; j >= 0; j--) 2132 seq.ccmp.pn[5 - j] = mlo_key->pn[j]; 2133 2134 /* group keys are non-QoS and use TID 0 */ 2135 ieee80211_set_key_rx_seq(key, 0, &seq); 2136 } 2137 2138 out: 2139 kfree(old_keys); 2140 return ret; 2141 } 2142 2143 static bool iwl_mvm_gtk_rekey(struct iwl_wowlan_status_data *status, 2144 struct ieee80211_vif *vif, 2145 struct iwl_mvm *mvm, u32 gtk_cipher) 2146 { 2147 int i, j; 2148 struct ieee80211_key_conf *key; 2149 struct { 2150 struct ieee80211_key_conf conf; 2151 u8 key[32]; 2152 } conf = { 2153 .conf.cipher = gtk_cipher, 2154 }; 2155 int link_id = vif->active_links ? __ffs(vif->active_links) : -1; 2156 2157 BUILD_BUG_ON(WLAN_KEY_LEN_CCMP != WLAN_KEY_LEN_GCMP); 2158 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_CCMP); 2159 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_GCMP_256); 2160 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_TKIP); 2161 BUILD_BUG_ON(sizeof(conf.key) < sizeof(status->gtk[0].key)); 2162 2163 switch (gtk_cipher) { 2164 case WLAN_CIPHER_SUITE_CCMP: 2165 case WLAN_CIPHER_SUITE_GCMP: 2166 conf.conf.keylen = WLAN_KEY_LEN_CCMP; 2167 break; 2168 case WLAN_CIPHER_SUITE_GCMP_256: 2169 conf.conf.keylen = WLAN_KEY_LEN_GCMP_256; 2170 break; 2171 case WLAN_CIPHER_SUITE_TKIP: 2172 conf.conf.keylen = WLAN_KEY_LEN_TKIP; 2173 break; 2174 default: 2175 WARN_ON(1); 2176 } 2177 2178 for (i = 0; i < ARRAY_SIZE(status->gtk); i++) { 2179 if (!status->gtk[i].len) 2180 continue; 2181 2182 conf.conf.keyidx = status->gtk[i].id; 2183 IWL_DEBUG_WOWLAN(mvm, 2184 "Received from FW GTK cipher %d, key index %d\n", 2185 conf.conf.cipher, conf.conf.keyidx); 2186 memcpy(conf.conf.key, status->gtk[i].key, 2187 sizeof(status->gtk[i].key)); 2188 2189 key = ieee80211_gtk_rekey_add(vif, &conf.conf, link_id); 2190 if (IS_ERR(key)) 2191 return false; 2192 2193 for (j = 0; j < ARRAY_SIZE(status->gtk_seq); j++) { 2194 if (!status->gtk_seq[j].valid || 2195 status->gtk_seq[j].key_id != key->keyidx) 2196 continue; 2197 iwl_mvm_set_key_rx_seq_idx(key, status, j); 2198 break; 2199 } 2200 WARN_ON(j == ARRAY_SIZE(status->gtk_seq)); 2201 } 2202 2203 return true; 2204 } 2205 2206 static bool 2207 iwl_mvm_d3_igtk_bigtk_rekey_add(struct iwl_wowlan_status_data *status, 2208 struct ieee80211_vif *vif, u32 cipher, 2209 struct iwl_multicast_key_data *key_data) 2210 { 2211 struct ieee80211_key_conf *key_config; 2212 struct { 2213 struct ieee80211_key_conf conf; 2214 u8 key[WOWLAN_KEY_MAX_SIZE]; 2215 } conf = { 2216 .conf.cipher = cipher, 2217 .conf.keyidx = key_data->id, 2218 }; 2219 struct ieee80211_key_seq seq; 2220 int link_id = vif->active_links ? __ffs(vif->active_links) : -1; 2221 2222 if (!key_data->len) 2223 return true; 2224 2225 iwl_mvm_d3_set_igtk_bigtk_ipn(key_data, &seq, conf.conf.cipher); 2226 2227 switch (cipher) { 2228 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 2229 conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_128; 2230 break; 2231 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 2232 conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_256; 2233 break; 2234 case WLAN_CIPHER_SUITE_AES_CMAC: 2235 conf.conf.keylen = WLAN_KEY_LEN_AES_CMAC; 2236 break; 2237 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 2238 conf.conf.keylen = WLAN_KEY_LEN_BIP_CMAC_256; 2239 break; 2240 default: 2241 WARN_ON(1); 2242 } 2243 BUILD_BUG_ON(sizeof(conf.key) < sizeof(key_data->key)); 2244 memcpy(conf.conf.key, key_data->key, conf.conf.keylen); 2245 2246 key_config = ieee80211_gtk_rekey_add(vif, &conf.conf, link_id); 2247 if (IS_ERR(key_config)) 2248 return false; 2249 ieee80211_set_key_rx_seq(key_config, 0, &seq); 2250 2251 if (key_config->keyidx == 4 || key_config->keyidx == 5) { 2252 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2253 struct iwl_mvm_vif_link_info *mvm_link; 2254 2255 link_id = link_id < 0 ? 0 : link_id; 2256 mvm_link = mvmvif->link[link_id]; 2257 mvm_link->igtk = key_config; 2258 } 2259 2260 return true; 2261 } 2262 2263 static int iwl_mvm_lookup_wowlan_status_ver(struct iwl_mvm *mvm) 2264 { 2265 u8 notif_ver; 2266 2267 if (!fw_has_api(&mvm->fw->ucode_capa, 2268 IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL)) 2269 return 6; 2270 2271 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */ 2272 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP, 2273 WOWLAN_GET_STATUSES, 0); 2274 if (!notif_ver) 2275 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, 2276 WOWLAN_GET_STATUSES, 7); 2277 2278 return notif_ver; 2279 } 2280 2281 static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm, 2282 struct ieee80211_vif *vif, 2283 struct iwl_wowlan_status_data *status) 2284 { 2285 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2286 struct iwl_mvm_d3_gtk_iter_data gtkdata = { 2287 .mvm = mvm, 2288 .status = status, 2289 }; 2290 int i; 2291 u32 disconnection_reasons = 2292 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 2293 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH; 2294 2295 if (!status || !vif->bss_conf.bssid) 2296 return false; 2297 2298 if (iwl_mvm_lookup_wowlan_status_ver(mvm) > 6 || 2299 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2300 WOWLAN_INFO_NOTIFICATION, 2301 0)) 2302 gtkdata.igtk_support = true; 2303 2304 if (iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2305 WOWLAN_INFO_NOTIFICATION, 2306 0) >= 3) 2307 gtkdata.bigtk_support = true; 2308 2309 /* find last GTK that we used initially, if any */ 2310 ieee80211_iter_keys(mvm->hw, vif, 2311 iwl_mvm_d3_find_last_keys, >kdata); 2312 /* not trying to keep connections with MFP/unhandled ciphers */ 2313 if (gtkdata.unhandled_cipher) 2314 return false; 2315 if (!gtkdata.num_keys) 2316 goto out; 2317 2318 /* 2319 * invalidate all other GTKs that might still exist and update 2320 * the one that we used 2321 */ 2322 ieee80211_iter_keys(mvm->hw, vif, 2323 iwl_mvm_d3_update_keys, >kdata); 2324 2325 if (status->num_of_gtk_rekeys) { 2326 __be64 replay_ctr = cpu_to_be64(status->replay_ctr); 2327 2328 IWL_DEBUG_WOWLAN(mvm, "num of GTK rekeying %d\n", 2329 status->num_of_gtk_rekeys); 2330 2331 if (!iwl_mvm_gtk_rekey(status, vif, mvm, gtkdata.gtk_cipher)) 2332 return false; 2333 2334 if (!iwl_mvm_d3_igtk_bigtk_rekey_add(status, vif, 2335 gtkdata.igtk_cipher, 2336 &status->igtk)) 2337 return false; 2338 2339 for (i = 0; i < ARRAY_SIZE(status->bigtk); i++) { 2340 if (!iwl_mvm_d3_igtk_bigtk_rekey_add(status, vif, 2341 gtkdata.bigtk_cipher, 2342 &status->bigtk[i])) 2343 return false; 2344 } 2345 2346 if (!iwl_mvm_mlo_gtk_rekey(status, vif, mvm)) 2347 return false; 2348 2349 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid, 2350 (void *)&replay_ctr, GFP_KERNEL); 2351 } 2352 2353 out: 2354 if (iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP, 2355 WOWLAN_GET_STATUSES, 2356 IWL_FW_CMD_VER_UNKNOWN) < 10) { 2357 mvmvif->seqno_valid = true; 2358 /* +0x10 because the set API expects next-to-use, not last-used */ 2359 mvmvif->seqno = status->non_qos_seq_ctr + 0x10; 2360 } 2361 2362 if (status->wakeup_reasons & disconnection_reasons) 2363 return false; 2364 2365 return true; 2366 } 2367 2368 static void iwl_mvm_convert_gtk_v2(struct iwl_wowlan_status_data *status, 2369 struct iwl_wowlan_gtk_status_v2 *data) 2370 { 2371 BUILD_BUG_ON(sizeof(status->gtk[0].key) < sizeof(data->key)); 2372 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY + 2373 sizeof(data->tkip_mic_key) > 2374 sizeof(status->gtk[0].key)); 2375 2376 status->gtk[0].len = data->key_len; 2377 status->gtk[0].flags = data->key_flags; 2378 2379 memcpy(status->gtk[0].key, data->key, sizeof(data->key)); 2380 2381 /* if it's as long as the TKIP encryption key, copy MIC key */ 2382 if (status->gtk[0].len == NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY) 2383 memcpy(status->gtk[0].key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 2384 data->tkip_mic_key, sizeof(data->tkip_mic_key)); 2385 } 2386 2387 static void iwl_mvm_convert_gtk_v3(struct iwl_wowlan_status_data *status, 2388 struct iwl_wowlan_gtk_status_v3 *data) 2389 { 2390 int data_idx, status_idx = 0; 2391 2392 BUILD_BUG_ON(sizeof(status->gtk[0].key) < sizeof(data[0].key)); 2393 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY + 2394 sizeof(data[0].tkip_mic_key) > 2395 sizeof(status->gtk[0].key)); 2396 BUILD_BUG_ON(ARRAY_SIZE(status->gtk) < WOWLAN_GTK_KEYS_NUM); 2397 for (data_idx = 0; data_idx < ARRAY_SIZE(status->gtk); data_idx++) { 2398 if (!(data[data_idx].key_len)) 2399 continue; 2400 status->gtk[status_idx].len = data[data_idx].key_len; 2401 status->gtk[status_idx].flags = data[data_idx].key_flags; 2402 status->gtk[status_idx].id = status->gtk[status_idx].flags & 2403 IWL_WOWLAN_GTK_IDX_MASK; 2404 2405 memcpy(status->gtk[status_idx].key, data[data_idx].key, 2406 sizeof(data[data_idx].key)); 2407 2408 /* if it's as long as the TKIP encryption key, copy MIC key */ 2409 if (status->gtk[status_idx].len == 2410 NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY) 2411 memcpy(status->gtk[status_idx].key + 2412 NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 2413 data[data_idx].tkip_mic_key, 2414 sizeof(data[data_idx].tkip_mic_key)); 2415 status_idx++; 2416 } 2417 } 2418 2419 static void iwl_mvm_convert_igtk(struct iwl_wowlan_status_data *status, 2420 struct iwl_wowlan_igtk_status *data) 2421 { 2422 int i; 2423 2424 BUILD_BUG_ON(sizeof(status->igtk.key) < sizeof(data->key)); 2425 BUILD_BUG_ON(sizeof(status->igtk.ipn) != sizeof(data->ipn)); 2426 2427 if (!data->key_len) 2428 return; 2429 2430 status->igtk.len = data->key_len; 2431 status->igtk.flags = data->key_flags; 2432 status->igtk.id = u32_get_bits(data->key_flags, 2433 IWL_WOWLAN_IGTK_BIGTK_IDX_MASK) 2434 + WOWLAN_IGTK_MIN_INDEX; 2435 2436 memcpy(status->igtk.key, data->key, sizeof(data->key)); 2437 2438 /* mac80211 expects big endian for memcmp() to work, convert */ 2439 for (i = 0; i < sizeof(data->ipn); i++) 2440 status->igtk.ipn[i] = data->ipn[sizeof(data->ipn) - i - 1]; 2441 } 2442 2443 static void iwl_mvm_convert_bigtk(struct iwl_wowlan_status_data *status, 2444 const struct iwl_wowlan_igtk_status *data) 2445 { 2446 int data_idx, status_idx = 0; 2447 2448 BUILD_BUG_ON(ARRAY_SIZE(status->bigtk) < WOWLAN_BIGTK_KEYS_NUM); 2449 2450 for (data_idx = 0; data_idx < WOWLAN_BIGTK_KEYS_NUM; data_idx++) { 2451 if (!data[data_idx].key_len) 2452 continue; 2453 2454 status->bigtk[status_idx].len = data[data_idx].key_len; 2455 status->bigtk[status_idx].flags = data[data_idx].key_flags; 2456 status->bigtk[status_idx].id = 2457 u32_get_bits(data[data_idx].key_flags, 2458 IWL_WOWLAN_IGTK_BIGTK_IDX_MASK) 2459 + WOWLAN_BIGTK_MIN_INDEX; 2460 2461 BUILD_BUG_ON(sizeof(status->bigtk[status_idx].key) < 2462 sizeof(data[data_idx].key)); 2463 BUILD_BUG_ON(sizeof(status->bigtk[status_idx].ipn) < 2464 sizeof(data[data_idx].ipn)); 2465 2466 memcpy(status->bigtk[status_idx].key, data[data_idx].key, 2467 sizeof(data[data_idx].key)); 2468 memcpy(status->bigtk[status_idx].ipn, data[data_idx].ipn, 2469 sizeof(data[data_idx].ipn)); 2470 status_idx++; 2471 } 2472 } 2473 2474 static void iwl_mvm_parse_wowlan_info_notif(struct iwl_mvm *mvm, 2475 struct iwl_wowlan_info_notif *data, 2476 struct iwl_wowlan_status_data *status, 2477 u32 len, bool has_mlo_keys) 2478 { 2479 u32 i; 2480 u32 expected_len = sizeof(*data); 2481 2482 if (!data) { 2483 IWL_ERR(mvm, "iwl_wowlan_info_notif data is NULL\n"); 2484 status = NULL; 2485 return; 2486 } 2487 2488 if (has_mlo_keys) 2489 expected_len += (data->num_mlo_link_keys * 2490 sizeof(status->mlo_keys[0])); 2491 2492 if (len < expected_len) { 2493 IWL_ERR(mvm, "Invalid WoWLAN info notification!\n"); 2494 status = NULL; 2495 return; 2496 } 2497 2498 if (mvm->fast_resume) 2499 return; 2500 2501 iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc); 2502 iwl_mvm_convert_gtk_v3(status, data->gtk); 2503 iwl_mvm_convert_igtk(status, &data->igtk[0]); 2504 iwl_mvm_convert_bigtk(status, data->bigtk); 2505 status->replay_ctr = le64_to_cpu(data->replay_ctr); 2506 status->pattern_number = le16_to_cpu(data->pattern_number); 2507 for (i = 0; i < IWL_MAX_TID_COUNT; i++) 2508 status->qos_seq_ctr[i] = 2509 le16_to_cpu(data->qos_seq_ctr[i]); 2510 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); 2511 status->num_of_gtk_rekeys = 2512 le32_to_cpu(data->num_of_gtk_rekeys); 2513 status->received_beacons = le32_to_cpu(data->received_beacons); 2514 status->tid_tear_down = data->tid_tear_down; 2515 2516 if (has_mlo_keys && data->num_mlo_link_keys) { 2517 status->num_mlo_keys = data->num_mlo_link_keys; 2518 if (IWL_FW_CHECK(mvm, 2519 status->num_mlo_keys > WOWLAN_MAX_MLO_KEYS, 2520 "Too many mlo keys: %d, max %d\n", 2521 status->num_mlo_keys, WOWLAN_MAX_MLO_KEYS)) 2522 status->num_mlo_keys = WOWLAN_MAX_MLO_KEYS; 2523 memcpy(status->mlo_keys, data->mlo_gtks, 2524 status->num_mlo_keys * sizeof(status->mlo_keys[0])); 2525 } 2526 } 2527 2528 static void 2529 iwl_mvm_parse_wowlan_info_notif_v2(struct iwl_mvm *mvm, 2530 struct iwl_wowlan_info_notif_v2 *data, 2531 struct iwl_wowlan_status_data *status, 2532 u32 len) 2533 { 2534 u32 i; 2535 2536 if (!data) { 2537 IWL_ERR(mvm, "iwl_wowlan_info_notif data is NULL\n"); 2538 status = NULL; 2539 return; 2540 } 2541 2542 if (len < sizeof(*data)) { 2543 IWL_ERR(mvm, "Invalid WoWLAN info notification!\n"); 2544 status = NULL; 2545 return; 2546 } 2547 2548 iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc); 2549 iwl_mvm_convert_gtk_v3(status, data->gtk); 2550 iwl_mvm_convert_igtk(status, &data->igtk[0]); 2551 status->replay_ctr = le64_to_cpu(data->replay_ctr); 2552 status->pattern_number = le16_to_cpu(data->pattern_number); 2553 for (i = 0; i < IWL_MAX_TID_COUNT; i++) 2554 status->qos_seq_ctr[i] = 2555 le16_to_cpu(data->qos_seq_ctr[i]); 2556 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); 2557 status->num_of_gtk_rekeys = 2558 le32_to_cpu(data->num_of_gtk_rekeys); 2559 status->received_beacons = le32_to_cpu(data->received_beacons); 2560 status->tid_tear_down = data->tid_tear_down; 2561 } 2562 2563 /* Occasionally, templates would be nice. This is one of those times ... */ 2564 #define iwl_mvm_parse_wowlan_status_common(_ver) \ 2565 static struct iwl_wowlan_status_data * \ 2566 iwl_mvm_parse_wowlan_status_common_ ## _ver(struct iwl_mvm *mvm, \ 2567 struct iwl_wowlan_status_ ##_ver *data,\ 2568 int len) \ 2569 { \ 2570 struct iwl_wowlan_status_data *status; \ 2571 int data_size, i; \ 2572 \ 2573 if (len < sizeof(*data)) { \ 2574 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \ 2575 return NULL; \ 2576 } \ 2577 \ 2578 data_size = ALIGN(le32_to_cpu(data->wake_packet_bufsize), 4); \ 2579 if (len != sizeof(*data) + data_size) { \ 2580 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \ 2581 return NULL; \ 2582 } \ 2583 \ 2584 status = kzalloc(sizeof(*status), GFP_KERNEL); \ 2585 if (!status) \ 2586 return NULL; \ 2587 \ 2588 /* copy all the common fields */ \ 2589 status->replay_ctr = le64_to_cpu(data->replay_ctr); \ 2590 status->pattern_number = le16_to_cpu(data->pattern_number); \ 2591 status->non_qos_seq_ctr = le16_to_cpu(data->non_qos_seq_ctr); \ 2592 for (i = 0; i < 8; i++) \ 2593 status->qos_seq_ctr[i] = \ 2594 le16_to_cpu(data->qos_seq_ctr[i]); \ 2595 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); \ 2596 status->num_of_gtk_rekeys = \ 2597 le32_to_cpu(data->num_of_gtk_rekeys); \ 2598 status->received_beacons = le32_to_cpu(data->received_beacons); \ 2599 status->wake_packet_length = \ 2600 le32_to_cpu(data->wake_packet_length); \ 2601 status->wake_packet_bufsize = \ 2602 le32_to_cpu(data->wake_packet_bufsize); \ 2603 if (status->wake_packet_bufsize) { \ 2604 status->wake_packet = \ 2605 kmemdup(data->wake_packet, \ 2606 status->wake_packet_bufsize, \ 2607 GFP_KERNEL); \ 2608 if (!status->wake_packet) { \ 2609 kfree(status); \ 2610 return NULL; \ 2611 } \ 2612 } else { \ 2613 status->wake_packet = NULL; \ 2614 } \ 2615 \ 2616 return status; \ 2617 } 2618 2619 iwl_mvm_parse_wowlan_status_common(v6) 2620 iwl_mvm_parse_wowlan_status_common(v7) 2621 iwl_mvm_parse_wowlan_status_common(v9) 2622 iwl_mvm_parse_wowlan_status_common(v12) 2623 2624 static struct iwl_wowlan_status_data * 2625 iwl_mvm_send_wowlan_get_status(struct iwl_mvm *mvm, u8 sta_id) 2626 { 2627 struct iwl_wowlan_status_data *status; 2628 struct iwl_wowlan_get_status_cmd get_status_cmd = { 2629 .sta_id = cpu_to_le32(sta_id), 2630 }; 2631 struct iwl_host_cmd cmd = { 2632 .id = WOWLAN_GET_STATUSES, 2633 .flags = CMD_WANT_SKB, 2634 .data = { &get_status_cmd, }, 2635 .len = { sizeof(get_status_cmd), }, 2636 }; 2637 int ret, len; 2638 u8 notif_ver; 2639 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id, 2640 IWL_FW_CMD_VER_UNKNOWN); 2641 2642 if (cmd_ver == IWL_FW_CMD_VER_UNKNOWN) 2643 cmd.len[0] = 0; 2644 2645 lockdep_assert_held(&mvm->mutex); 2646 2647 ret = iwl_mvm_send_cmd(mvm, &cmd); 2648 if (ret) { 2649 IWL_ERR(mvm, "failed to query wakeup status (%d)\n", ret); 2650 return ERR_PTR(ret); 2651 } 2652 2653 len = iwl_rx_packet_payload_len(cmd.resp_pkt); 2654 2655 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */ 2656 notif_ver = iwl_mvm_lookup_wowlan_status_ver(mvm); 2657 2658 if (notif_ver < 7) { 2659 struct iwl_wowlan_status_v6 *v6 = (void *)cmd.resp_pkt->data; 2660 2661 status = iwl_mvm_parse_wowlan_status_common_v6(mvm, v6, len); 2662 if (!status) 2663 goto out_free_resp; 2664 2665 BUILD_BUG_ON(sizeof(v6->gtk.decrypt_key) > 2666 sizeof(status->gtk[0].key)); 2667 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY + 2668 sizeof(v6->gtk.tkip_mic_key) > 2669 sizeof(status->gtk[0].key)); 2670 2671 /* copy GTK info to the right place */ 2672 memcpy(status->gtk[0].key, v6->gtk.decrypt_key, 2673 sizeof(v6->gtk.decrypt_key)); 2674 memcpy(status->gtk[0].key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 2675 v6->gtk.tkip_mic_key, 2676 sizeof(v6->gtk.tkip_mic_key)); 2677 2678 iwl_mvm_convert_key_counters(status, &v6->gtk.rsc.all_tsc_rsc); 2679 2680 /* hardcode the key length to 16 since v6 only supports 16 */ 2681 status->gtk[0].len = 16; 2682 2683 /* 2684 * The key index only uses 2 bits (values 0 to 3) and 2685 * we always set bit 7 which means this is the 2686 * currently used key. 2687 */ 2688 status->gtk[0].flags = v6->gtk.key_index | BIT(7); 2689 } else if (notif_ver == 7) { 2690 struct iwl_wowlan_status_v7 *v7 = (void *)cmd.resp_pkt->data; 2691 2692 status = iwl_mvm_parse_wowlan_status_common_v7(mvm, v7, len); 2693 if (!status) 2694 goto out_free_resp; 2695 2696 iwl_mvm_convert_key_counters(status, &v7->gtk[0].rsc.all_tsc_rsc); 2697 iwl_mvm_convert_gtk_v2(status, &v7->gtk[0]); 2698 iwl_mvm_convert_igtk(status, &v7->igtk[0]); 2699 } else if (notif_ver == 9 || notif_ver == 10 || notif_ver == 11) { 2700 struct iwl_wowlan_status_v9 *v9 = (void *)cmd.resp_pkt->data; 2701 2702 /* these three command versions have same layout and size, the 2703 * difference is only in a few not used (reserved) fields. 2704 */ 2705 status = iwl_mvm_parse_wowlan_status_common_v9(mvm, v9, len); 2706 if (!status) 2707 goto out_free_resp; 2708 2709 iwl_mvm_convert_key_counters(status, &v9->gtk[0].rsc.all_tsc_rsc); 2710 iwl_mvm_convert_gtk_v2(status, &v9->gtk[0]); 2711 iwl_mvm_convert_igtk(status, &v9->igtk[0]); 2712 2713 status->tid_tear_down = v9->tid_tear_down; 2714 } else if (notif_ver == 12) { 2715 struct iwl_wowlan_status_v12 *v12 = (void *)cmd.resp_pkt->data; 2716 2717 status = iwl_mvm_parse_wowlan_status_common_v12(mvm, v12, len); 2718 if (!status) 2719 goto out_free_resp; 2720 2721 iwl_mvm_convert_key_counters_v5(status, &v12->gtk[0].sc); 2722 iwl_mvm_convert_gtk_v3(status, v12->gtk); 2723 iwl_mvm_convert_igtk(status, &v12->igtk[0]); 2724 2725 status->tid_tear_down = v12->tid_tear_down; 2726 } else { 2727 IWL_ERR(mvm, 2728 "Firmware advertises unknown WoWLAN status response %d!\n", 2729 notif_ver); 2730 status = NULL; 2731 } 2732 2733 out_free_resp: 2734 iwl_free_resp(&cmd); 2735 return status; 2736 } 2737 2738 /* releases the MVM mutex */ 2739 static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm, 2740 struct ieee80211_vif *vif, 2741 struct iwl_wowlan_status_data *status) 2742 { 2743 int i; 2744 bool keep = false; 2745 struct iwl_mvm_sta *mvm_ap_sta; 2746 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2747 int link_id = vif->active_links ? __ffs(vif->active_links) : 0; 2748 struct iwl_mvm_vif_link_info *mvm_link = mvmvif->link[link_id]; 2749 2750 if (WARN_ON(!mvm_link)) 2751 goto out_unlock; 2752 2753 if (!status) 2754 goto out_unlock; 2755 2756 IWL_DEBUG_WOWLAN(mvm, "wakeup reason 0x%x\n", 2757 status->wakeup_reasons); 2758 2759 mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, mvm_link->ap_sta_id); 2760 if (!mvm_ap_sta) 2761 goto out_unlock; 2762 2763 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 2764 u16 seq = status->qos_seq_ctr[i]; 2765 /* firmware stores last-used value, we store next value */ 2766 seq += 0x10; 2767 mvm_ap_sta->tid_data[i].seq_number = seq; 2768 } 2769 2770 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000) { 2771 i = mvm->offload_tid; 2772 iwl_trans_set_q_ptrs(mvm->trans, 2773 mvm_ap_sta->tid_data[i].txq_id, 2774 mvm_ap_sta->tid_data[i].seq_number >> 4); 2775 } 2776 2777 iwl_mvm_report_wakeup_reasons(mvm, vif, status); 2778 2779 keep = iwl_mvm_setup_connection_keep(mvm, vif, status); 2780 out_unlock: 2781 mutex_unlock(&mvm->mutex); 2782 return keep; 2783 } 2784 2785 #define ND_QUERY_BUF_LEN (sizeof(struct iwl_scan_offload_profile_match) * \ 2786 IWL_SCAN_MAX_PROFILES) 2787 2788 struct iwl_mvm_nd_results { 2789 u32 matched_profiles; 2790 u8 matches[ND_QUERY_BUF_LEN]; 2791 }; 2792 2793 static int 2794 iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm, 2795 struct iwl_mvm_nd_results *results) 2796 { 2797 struct iwl_scan_offload_match_info *query; 2798 struct iwl_host_cmd cmd = { 2799 .id = SCAN_OFFLOAD_PROFILES_QUERY_CMD, 2800 .flags = CMD_WANT_SKB, 2801 }; 2802 int ret, len; 2803 size_t query_len, matches_len; 2804 int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw); 2805 2806 ret = iwl_mvm_send_cmd(mvm, &cmd); 2807 if (ret) { 2808 IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret); 2809 return ret; 2810 } 2811 2812 if (fw_has_api(&mvm->fw->ucode_capa, 2813 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2814 query_len = sizeof(struct iwl_scan_offload_match_info); 2815 matches_len = sizeof(struct iwl_scan_offload_profile_match) * 2816 max_profiles; 2817 } else { 2818 query_len = sizeof(struct iwl_scan_offload_profiles_query_v1); 2819 matches_len = sizeof(struct iwl_scan_offload_profile_match_v1) * 2820 max_profiles; 2821 } 2822 2823 len = iwl_rx_packet_payload_len(cmd.resp_pkt); 2824 if (len < query_len) { 2825 IWL_ERR(mvm, "Invalid scan offload profiles query response!\n"); 2826 ret = -EIO; 2827 goto out_free_resp; 2828 } 2829 2830 query = (void *)cmd.resp_pkt->data; 2831 2832 results->matched_profiles = le32_to_cpu(query->matched_profiles); 2833 memcpy(results->matches, query->matches, matches_len); 2834 2835 #ifdef CONFIG_IWLWIFI_DEBUGFS 2836 mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done); 2837 #endif 2838 2839 out_free_resp: 2840 iwl_free_resp(&cmd); 2841 return ret; 2842 } 2843 2844 static int iwl_mvm_query_num_match_chans(struct iwl_mvm *mvm, 2845 struct iwl_mvm_nd_results *results, 2846 int idx) 2847 { 2848 int n_chans = 0, i; 2849 2850 if (fw_has_api(&mvm->fw->ucode_capa, 2851 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2852 struct iwl_scan_offload_profile_match *matches = 2853 (void *)results->matches; 2854 2855 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; i++) 2856 n_chans += hweight8(matches[idx].matching_channels[i]); 2857 } else { 2858 struct iwl_scan_offload_profile_match_v1 *matches = 2859 (void *)results->matches; 2860 2861 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1; i++) 2862 n_chans += hweight8(matches[idx].matching_channels[i]); 2863 } 2864 2865 return n_chans; 2866 } 2867 2868 static void iwl_mvm_query_set_freqs(struct iwl_mvm *mvm, 2869 struct iwl_mvm_nd_results *results, 2870 struct cfg80211_wowlan_nd_match *match, 2871 int idx) 2872 { 2873 int i; 2874 2875 if (fw_has_api(&mvm->fw->ucode_capa, 2876 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2877 struct iwl_scan_offload_profile_match *matches = 2878 (void *)results->matches; 2879 2880 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 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 } else { 2885 struct iwl_scan_offload_profile_match_v1 *matches = 2886 (void *)results->matches; 2887 2888 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1 * 8; i++) 2889 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8))) 2890 match->channels[match->n_channels++] = 2891 mvm->nd_channels[i]->center_freq; 2892 } 2893 } 2894 2895 /** 2896 * enum iwl_d3_notif - d3 notifications 2897 * @IWL_D3_NOTIF_WOWLAN_INFO: WOWLAN_INFO_NOTIF was received 2898 * @IWL_D3_NOTIF_WOWLAN_WAKE_PKT: WOWLAN_WAKE_PKT_NOTIF was received 2899 * @IWL_D3_NOTIF_PROT_OFFLOAD: PROT_OFFLOAD_NOTIF was received 2900 * @IWL_D3_ND_MATCH_INFO: OFFLOAD_MATCH_INFO_NOTIF was received 2901 * @IWL_D3_NOTIF_D3_END_NOTIF: D3_END_NOTIF was received 2902 */ 2903 enum iwl_d3_notif { 2904 IWL_D3_NOTIF_WOWLAN_INFO = BIT(0), 2905 IWL_D3_NOTIF_WOWLAN_WAKE_PKT = BIT(1), 2906 IWL_D3_NOTIF_PROT_OFFLOAD = BIT(2), 2907 IWL_D3_ND_MATCH_INFO = BIT(3), 2908 IWL_D3_NOTIF_D3_END_NOTIF = BIT(4) 2909 }; 2910 2911 /* manage d3 resume data */ 2912 struct iwl_d3_data { 2913 struct iwl_wowlan_status_data *status; 2914 bool test; 2915 u32 d3_end_flags; 2916 u32 notif_expected; /* bitmap - see &enum iwl_d3_notif */ 2917 u32 notif_received; /* bitmap - see &enum iwl_d3_notif */ 2918 struct iwl_mvm_nd_results *nd_results; 2919 bool nd_results_valid; 2920 }; 2921 2922 static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm, 2923 struct ieee80211_vif *vif, 2924 struct iwl_d3_data *d3_data) 2925 { 2926 struct cfg80211_wowlan_nd_info *net_detect = NULL; 2927 struct cfg80211_wowlan_wakeup wakeup = { 2928 .pattern_idx = -1, 2929 }; 2930 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; 2931 unsigned long matched_profiles; 2932 u32 reasons = 0; 2933 int i, n_matches, ret; 2934 2935 if (WARN_ON(!d3_data || !d3_data->status)) 2936 goto out; 2937 2938 reasons = d3_data->status->wakeup_reasons; 2939 2940 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 2941 wakeup.rfkill_release = true; 2942 2943 if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) 2944 goto out; 2945 2946 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2947 WOWLAN_INFO_NOTIFICATION, 0)) { 2948 IWL_INFO(mvm, "Query FW for ND results\n"); 2949 ret = iwl_mvm_netdetect_query_results(mvm, d3_data->nd_results); 2950 2951 } else { 2952 IWL_INFO(mvm, "Notification based ND results\n"); 2953 ret = d3_data->nd_results_valid ? 0 : -1; 2954 } 2955 2956 if (ret || !d3_data->nd_results->matched_profiles) { 2957 wakeup_report = NULL; 2958 goto out; 2959 } 2960 2961 matched_profiles = d3_data->nd_results->matched_profiles; 2962 if (mvm->n_nd_match_sets) { 2963 n_matches = hweight_long(matched_profiles); 2964 } else { 2965 IWL_ERR(mvm, "no net detect match information available\n"); 2966 n_matches = 0; 2967 } 2968 2969 net_detect = kzalloc(struct_size(net_detect, matches, n_matches), 2970 GFP_KERNEL); 2971 if (!net_detect || !n_matches) 2972 goto out_report_nd; 2973 2974 for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) { 2975 struct cfg80211_wowlan_nd_match *match; 2976 int idx, n_channels = 0; 2977 2978 n_channels = iwl_mvm_query_num_match_chans(mvm, 2979 d3_data->nd_results, 2980 i); 2981 2982 match = kzalloc(struct_size(match, channels, n_channels), 2983 GFP_KERNEL); 2984 if (!match) 2985 goto out_report_nd; 2986 2987 net_detect->matches[net_detect->n_matches++] = match; 2988 2989 /* We inverted the order of the SSIDs in the scan 2990 * request, so invert the index here. 2991 */ 2992 idx = mvm->n_nd_match_sets - i - 1; 2993 match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len; 2994 memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid, 2995 match->ssid.ssid_len); 2996 2997 if (mvm->n_nd_channels < n_channels) 2998 continue; 2999 3000 iwl_mvm_query_set_freqs(mvm, d3_data->nd_results, match, i); 3001 } 3002 3003 out_report_nd: 3004 wakeup.net_detect = net_detect; 3005 out: 3006 iwl_mvm_free_nd(mvm); 3007 3008 mutex_unlock(&mvm->mutex); 3009 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); 3010 3011 if (net_detect) { 3012 for (i = 0; i < net_detect->n_matches; i++) 3013 kfree(net_detect->matches[i]); 3014 kfree(net_detect); 3015 } 3016 } 3017 3018 static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac, 3019 struct ieee80211_vif *vif) 3020 { 3021 /* skip the one we keep connection on */ 3022 if (data == vif) 3023 return; 3024 3025 if (vif->type == NL80211_IFTYPE_STATION) 3026 ieee80211_resume_disconnect(vif); 3027 } 3028 3029 static bool iwl_mvm_rt_status(struct iwl_trans *trans, u32 base, u32 *err_id) 3030 { 3031 struct error_table_start { 3032 /* cf. struct iwl_error_event_table */ 3033 u32 valid; 3034 __le32 err_id; 3035 } err_info; 3036 3037 if (!base) 3038 return false; 3039 3040 iwl_trans_read_mem_bytes(trans, base, 3041 &err_info, sizeof(err_info)); 3042 if (err_info.valid && err_id) 3043 *err_id = le32_to_cpu(err_info.err_id); 3044 3045 return !!err_info.valid; 3046 } 3047 3048 static bool iwl_mvm_check_rt_status(struct iwl_mvm *mvm, 3049 struct ieee80211_vif *vif) 3050 { 3051 u32 err_id; 3052 3053 /* check for lmac1 error */ 3054 if (iwl_mvm_rt_status(mvm->trans, 3055 mvm->trans->dbg.lmac_error_event_table[0], 3056 &err_id)) { 3057 if (err_id == RF_KILL_INDICATOR_FOR_WOWLAN && vif) { 3058 struct cfg80211_wowlan_wakeup wakeup = { 3059 .rfkill_release = true, 3060 }; 3061 ieee80211_report_wowlan_wakeup(vif, &wakeup, 3062 GFP_KERNEL); 3063 } 3064 return true; 3065 } 3066 3067 /* check if we have lmac2 set and check for error */ 3068 if (iwl_mvm_rt_status(mvm->trans, 3069 mvm->trans->dbg.lmac_error_event_table[1], NULL)) 3070 return true; 3071 3072 /* check for umac error */ 3073 if (iwl_mvm_rt_status(mvm->trans, 3074 mvm->trans->dbg.umac_error_event_table, NULL)) 3075 return true; 3076 3077 return false; 3078 } 3079 3080 /* 3081 * This function assumes: 3082 * 1. The mutex is already held. 3083 * 2. The callee functions unlock the mutex. 3084 */ 3085 static bool 3086 iwl_mvm_choose_query_wakeup_reasons(struct iwl_mvm *mvm, 3087 struct ieee80211_vif *vif, 3088 struct iwl_d3_data *d3_data) 3089 { 3090 lockdep_assert_held(&mvm->mutex); 3091 3092 /* if FW uses status notification, status shouldn't be NULL here */ 3093 if (!d3_data->status) { 3094 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3095 u8 sta_id = mvm->net_detect ? IWL_MVM_INVALID_STA : 3096 mvmvif->deflink.ap_sta_id; 3097 3098 /* bug - FW with MLO has status notification */ 3099 WARN_ON(ieee80211_vif_is_mld(vif)); 3100 3101 d3_data->status = iwl_mvm_send_wowlan_get_status(mvm, sta_id); 3102 } 3103 3104 if (mvm->net_detect) { 3105 iwl_mvm_query_netdetect_reasons(mvm, vif, d3_data); 3106 } else { 3107 bool keep = iwl_mvm_query_wakeup_reasons(mvm, vif, 3108 d3_data->status); 3109 3110 #ifdef CONFIG_IWLWIFI_DEBUGFS 3111 if (keep) 3112 mvm->keep_vif = vif; 3113 #endif 3114 3115 return keep; 3116 } 3117 return false; 3118 } 3119 3120 #define IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT (IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET | \ 3121 IWL_WOWLAN_WAKEUP_BY_PATTERN | \ 3122 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN |\ 3123 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN_WILDCARD |\ 3124 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN |\ 3125 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN_WILDCARD) 3126 3127 static int iwl_mvm_wowlan_store_wake_pkt(struct iwl_mvm *mvm, 3128 struct iwl_wowlan_wake_pkt_notif *notif, 3129 struct iwl_wowlan_status_data *status, 3130 u32 len) 3131 { 3132 u32 data_size, packet_len = le32_to_cpu(notif->wake_packet_length); 3133 3134 if (len < sizeof(*notif)) { 3135 IWL_ERR(mvm, "Invalid WoWLAN wake packet notification!\n"); 3136 return -EIO; 3137 } 3138 3139 if (WARN_ON(!status)) { 3140 IWL_ERR(mvm, "Got wake packet notification but wowlan status data is NULL\n"); 3141 return -EIO; 3142 } 3143 3144 if (WARN_ON(!(status->wakeup_reasons & 3145 IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT))) { 3146 IWL_ERR(mvm, "Got wakeup packet but wakeup reason is %x\n", 3147 status->wakeup_reasons); 3148 return -EIO; 3149 } 3150 3151 data_size = len - offsetof(struct iwl_wowlan_wake_pkt_notif, wake_packet); 3152 3153 /* data_size got the padding from the notification, remove it. */ 3154 if (packet_len < data_size) 3155 data_size = packet_len; 3156 3157 status->wake_packet = kmemdup(notif->wake_packet, data_size, 3158 GFP_ATOMIC); 3159 3160 if (!status->wake_packet) 3161 return -ENOMEM; 3162 3163 status->wake_packet_length = packet_len; 3164 status->wake_packet_bufsize = data_size; 3165 3166 return 0; 3167 } 3168 3169 static void iwl_mvm_nd_match_info_handler(struct iwl_mvm *mvm, 3170 struct iwl_d3_data *d3_data, 3171 struct iwl_scan_offload_match_info *notif, 3172 u32 len) 3173 { 3174 struct iwl_wowlan_status_data *status = d3_data->status; 3175 struct ieee80211_vif *vif = iwl_mvm_get_bss_vif(mvm); 3176 struct iwl_mvm_nd_results *results = d3_data->nd_results; 3177 size_t i, matches_len = sizeof(struct iwl_scan_offload_profile_match) * 3178 iwl_umac_scan_get_max_profiles(mvm->fw); 3179 3180 if (IS_ERR_OR_NULL(vif)) 3181 return; 3182 3183 if (len < sizeof(struct iwl_scan_offload_match_info)) { 3184 IWL_ERR(mvm, "Invalid scan match info notification\n"); 3185 return; 3186 } 3187 3188 if (!mvm->net_detect) { 3189 IWL_ERR(mvm, "Unexpected scan match info notification\n"); 3190 return; 3191 } 3192 3193 if (!status || status->wakeup_reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) { 3194 IWL_ERR(mvm, 3195 "Ignore scan match info notification: no reason\n"); 3196 return; 3197 } 3198 3199 #ifdef CONFIG_IWLWIFI_DEBUGFS 3200 mvm->last_netdetect_scans = le32_to_cpu(notif->n_scans_done); 3201 #endif 3202 3203 results->matched_profiles = le32_to_cpu(notif->matched_profiles); 3204 IWL_INFO(mvm, "number of matched profiles=%u\n", 3205 results->matched_profiles); 3206 3207 if (results->matched_profiles) { 3208 memcpy(results->matches, notif->matches, matches_len); 3209 d3_data->nd_results_valid = true; 3210 } 3211 3212 /* no scan should be active at this point */ 3213 mvm->scan_status = 0; 3214 for (i = 0; i < mvm->max_scans; i++) 3215 mvm->scan_uid_status[i] = 0; 3216 } 3217 3218 static bool iwl_mvm_wait_d3_notif(struct iwl_notif_wait_data *notif_wait, 3219 struct iwl_rx_packet *pkt, void *data) 3220 { 3221 struct iwl_mvm *mvm = 3222 container_of(notif_wait, struct iwl_mvm, notif_wait); 3223 struct iwl_d3_data *d3_data = data; 3224 u32 len = iwl_rx_packet_payload_len(pkt); 3225 int ret; 3226 int wowlan_info_ver = iwl_fw_lookup_notif_ver(mvm->fw, 3227 PROT_OFFLOAD_GROUP, 3228 WOWLAN_INFO_NOTIFICATION, 3229 IWL_FW_CMD_VER_UNKNOWN); 3230 3231 3232 switch (WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) { 3233 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION): { 3234 3235 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_INFO) { 3236 /* We might get two notifications due to dual bss */ 3237 IWL_DEBUG_WOWLAN(mvm, 3238 "Got additional wowlan info notification\n"); 3239 break; 3240 } 3241 3242 if (wowlan_info_ver < 2) { 3243 struct iwl_wowlan_info_notif_v1 *notif_v1 = 3244 (void *)pkt->data; 3245 struct iwl_wowlan_info_notif_v2 *notif_v2; 3246 3247 notif_v2 = kmemdup(notif_v1, sizeof(*notif_v2), GFP_ATOMIC); 3248 3249 if (!notif_v2) 3250 return false; 3251 3252 notif_v2->tid_tear_down = notif_v1->tid_tear_down; 3253 notif_v2->station_id = notif_v1->station_id; 3254 memset_after(notif_v2, 0, station_id); 3255 iwl_mvm_parse_wowlan_info_notif_v2(mvm, notif_v2, 3256 d3_data->status, 3257 len); 3258 kfree(notif_v2); 3259 3260 } else if (wowlan_info_ver == 2) { 3261 struct iwl_wowlan_info_notif_v2 *notif_v2 = 3262 (void *)pkt->data; 3263 3264 iwl_mvm_parse_wowlan_info_notif_v2(mvm, notif_v2, 3265 d3_data->status, 3266 len); 3267 } else { 3268 struct iwl_wowlan_info_notif *notif = 3269 (void *)pkt->data; 3270 3271 iwl_mvm_parse_wowlan_info_notif(mvm, notif, 3272 d3_data->status, len, 3273 wowlan_info_ver > 3); 3274 } 3275 3276 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_INFO; 3277 3278 if (d3_data->status && 3279 d3_data->status->wakeup_reasons & IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT) 3280 /* We are supposed to get also wake packet notif */ 3281 d3_data->notif_expected |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT; 3282 3283 break; 3284 } 3285 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION): { 3286 struct iwl_wowlan_wake_pkt_notif *notif = (void *)pkt->data; 3287 3288 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_WAKE_PKT) { 3289 /* We shouldn't get two wake packet notifications */ 3290 IWL_ERR(mvm, 3291 "Got additional wowlan wake packet notification\n"); 3292 } else { 3293 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT; 3294 len = iwl_rx_packet_payload_len(pkt); 3295 ret = iwl_mvm_wowlan_store_wake_pkt(mvm, notif, 3296 d3_data->status, 3297 len); 3298 if (ret) 3299 IWL_ERR(mvm, 3300 "Can't parse WOWLAN_WAKE_PKT_NOTIFICATION\n"); 3301 } 3302 3303 break; 3304 } 3305 case WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF): { 3306 struct iwl_scan_offload_match_info *notif = (void *)pkt->data; 3307 3308 if (d3_data->notif_received & IWL_D3_ND_MATCH_INFO) { 3309 IWL_ERR(mvm, 3310 "Got additional netdetect match info\n"); 3311 break; 3312 } 3313 3314 d3_data->notif_received |= IWL_D3_ND_MATCH_INFO; 3315 3316 /* explicitly set this in the 'expected' as well */ 3317 d3_data->notif_expected |= IWL_D3_ND_MATCH_INFO; 3318 3319 len = iwl_rx_packet_payload_len(pkt); 3320 iwl_mvm_nd_match_info_handler(mvm, d3_data, notif, len); 3321 break; 3322 } 3323 case WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION): { 3324 struct iwl_mvm_d3_end_notif *notif = (void *)pkt->data; 3325 3326 d3_data->d3_end_flags = __le32_to_cpu(notif->flags); 3327 d3_data->notif_received |= IWL_D3_NOTIF_D3_END_NOTIF; 3328 3329 break; 3330 } 3331 default: 3332 WARN_ON(1); 3333 } 3334 3335 return d3_data->notif_received == d3_data->notif_expected; 3336 } 3337 3338 static int iwl_mvm_resume_firmware(struct iwl_mvm *mvm, bool test) 3339 { 3340 int ret; 3341 enum iwl_d3_status d3_status; 3342 struct iwl_host_cmd cmd = { 3343 .id = D0I3_END_CMD, 3344 .flags = CMD_WANT_SKB | CMD_SEND_IN_D3, 3345 }; 3346 bool reset = fw_has_capa(&mvm->fw->ucode_capa, 3347 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 3348 3349 ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, !reset); 3350 if (ret) 3351 return ret; 3352 3353 if (d3_status != IWL_D3_STATUS_ALIVE) { 3354 IWL_INFO(mvm, "Device was reset during suspend\n"); 3355 return -ENOENT; 3356 } 3357 3358 /* 3359 * We should trigger resume flow using command only for 22000 family 3360 * AX210 and above don't need the command since they have 3361 * the doorbell interrupt. 3362 */ 3363 if (mvm->trans->trans_cfg->device_family <= IWL_DEVICE_FAMILY_22000 && 3364 fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_D0I3_END_FIRST)) { 3365 ret = iwl_mvm_send_cmd(mvm, &cmd); 3366 if (ret < 0) 3367 IWL_ERR(mvm, "Failed to send D0I3_END_CMD first (%d)\n", 3368 ret); 3369 } 3370 3371 return ret; 3372 } 3373 3374 #define IWL_MVM_D3_NOTIF_TIMEOUT (HZ / 3) 3375 3376 static int iwl_mvm_d3_notif_wait(struct iwl_mvm *mvm, 3377 struct iwl_d3_data *d3_data) 3378 { 3379 static const u16 d3_resume_notif[] = { 3380 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION), 3381 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION), 3382 WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF), 3383 WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION) 3384 }; 3385 static const u16 d3_fast_resume_notif[] = { 3386 WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION) 3387 }; 3388 struct iwl_notification_wait wait_d3_notif; 3389 int ret; 3390 3391 if (mvm->fast_resume) 3392 iwl_init_notification_wait(&mvm->notif_wait, &wait_d3_notif, 3393 d3_fast_resume_notif, 3394 ARRAY_SIZE(d3_fast_resume_notif), 3395 iwl_mvm_wait_d3_notif, d3_data); 3396 else 3397 iwl_init_notification_wait(&mvm->notif_wait, &wait_d3_notif, 3398 d3_resume_notif, 3399 ARRAY_SIZE(d3_resume_notif), 3400 iwl_mvm_wait_d3_notif, d3_data); 3401 3402 ret = iwl_mvm_resume_firmware(mvm, d3_data->test); 3403 if (ret) { 3404 iwl_remove_notification(&mvm->notif_wait, &wait_d3_notif); 3405 return ret; 3406 } 3407 3408 return iwl_wait_notification(&mvm->notif_wait, &wait_d3_notif, 3409 IWL_MVM_D3_NOTIF_TIMEOUT); 3410 } 3411 3412 static inline bool iwl_mvm_d3_resume_notif_based(struct iwl_mvm *mvm) 3413 { 3414 return iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3415 WOWLAN_INFO_NOTIFICATION, 0) && 3416 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3417 WOWLAN_WAKE_PKT_NOTIFICATION, 0) && 3418 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3419 D3_END_NOTIFICATION, 0); 3420 } 3421 3422 static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test) 3423 { 3424 struct ieee80211_vif *vif = NULL; 3425 int ret = 1; 3426 struct iwl_mvm_nd_results results = {}; 3427 struct iwl_d3_data d3_data = { 3428 .test = test, 3429 .notif_expected = 3430 IWL_D3_NOTIF_WOWLAN_INFO | 3431 IWL_D3_NOTIF_D3_END_NOTIF, 3432 .nd_results_valid = false, 3433 .nd_results = &results, 3434 }; 3435 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 3436 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 3437 bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa, 3438 IWL_UCODE_TLV_CAPA_D0I3_END_FIRST); 3439 bool resume_notif_based = iwl_mvm_d3_resume_notif_based(mvm); 3440 bool keep = false; 3441 3442 mutex_lock(&mvm->mutex); 3443 3444 /* Apparently, the device went away and device_powered_off() was called, 3445 * don't even try to read the rt_status, the device is currently 3446 * inaccessible. 3447 */ 3448 if (!test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) { 3449 IWL_INFO(mvm, 3450 "Can't resume, device_powered_off() was called during wowlan\n"); 3451 goto err; 3452 } 3453 3454 mvm->last_reset_or_resume_time_jiffies = jiffies; 3455 3456 /* get the BSS vif pointer again */ 3457 vif = iwl_mvm_get_bss_vif(mvm); 3458 if (IS_ERR_OR_NULL(vif)) 3459 goto err; 3460 3461 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt); 3462 3463 if (iwl_mvm_check_rt_status(mvm, vif)) { 3464 set_bit(STATUS_FW_ERROR, &mvm->trans->status); 3465 iwl_mvm_dump_nic_error_log(mvm); 3466 iwl_dbg_tlv_time_point(&mvm->fwrt, 3467 IWL_FW_INI_TIME_POINT_FW_ASSERT, NULL); 3468 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert, 3469 false, 0); 3470 ret = 1; 3471 goto err; 3472 } 3473 3474 if (resume_notif_based) { 3475 d3_data.status = kzalloc(sizeof(*d3_data.status), GFP_KERNEL); 3476 if (!d3_data.status) { 3477 IWL_ERR(mvm, "Failed to allocate wowlan status\n"); 3478 ret = -ENOMEM; 3479 goto err; 3480 } 3481 3482 ret = iwl_mvm_d3_notif_wait(mvm, &d3_data); 3483 if (ret) 3484 goto err; 3485 } else { 3486 ret = iwl_mvm_resume_firmware(mvm, test); 3487 if (ret < 0) 3488 goto err; 3489 } 3490 3491 iwl_mvm_unblock_esr(mvm, vif, IWL_MVM_ESR_BLOCKED_WOWLAN); 3492 3493 /* after the successful handshake, we're out of D3 */ 3494 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED; 3495 3496 /* when reset is required we can't send these following commands */ 3497 if (d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE) 3498 goto query_wakeup_reasons; 3499 3500 /* 3501 * Query the current location and source from the D3 firmware so we 3502 * can play it back when we re-intiailize the D0 firmware 3503 */ 3504 iwl_mvm_update_changed_regdom(mvm); 3505 3506 /* Re-configure PPAG settings */ 3507 iwl_mvm_ppag_send_cmd(mvm); 3508 3509 if (!unified_image) 3510 /* Re-configure default SAR profile */ 3511 iwl_mvm_sar_select_profile(mvm, 1, 1); 3512 3513 if (mvm->net_detect && unified_image) { 3514 /* If this is a non-unified image, we restart the FW, 3515 * so no need to stop the netdetect scan. If that 3516 * fails, continue and try to get the wake-up reasons, 3517 * but trigger a HW restart by keeping a failure code 3518 * in ret. 3519 */ 3520 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT, 3521 false); 3522 } 3523 3524 query_wakeup_reasons: 3525 keep = iwl_mvm_choose_query_wakeup_reasons(mvm, vif, &d3_data); 3526 /* has unlocked the mutex, so skip that */ 3527 goto out; 3528 3529 err: 3530 mutex_unlock(&mvm->mutex); 3531 out: 3532 if (d3_data.status) 3533 kfree(d3_data.status->wake_packet); 3534 kfree(d3_data.status); 3535 iwl_mvm_free_nd(mvm); 3536 3537 if (!d3_data.test && !mvm->net_detect) 3538 ieee80211_iterate_active_interfaces_mtx(mvm->hw, 3539 IEEE80211_IFACE_ITER_NORMAL, 3540 iwl_mvm_d3_disconnect_iter, 3541 keep ? vif : NULL); 3542 3543 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 3544 3545 /* no need to reset the device in unified images, if successful */ 3546 if (unified_image && !ret) { 3547 /* nothing else to do if we already sent D0I3_END_CMD */ 3548 if (d0i3_first) 3549 return 0; 3550 3551 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3552 D3_END_NOTIFICATION, 0)) { 3553 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL); 3554 if (!ret) 3555 return 0; 3556 } else if (!(d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)) { 3557 return 0; 3558 } 3559 } 3560 3561 /* 3562 * Reconfigure the device in one of the following cases: 3563 * 1. We are not using a unified image 3564 * 2. We are using a unified image but had an error while exiting D3 3565 */ 3566 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); 3567 3568 /* regardless of what happened, we're now out of D3 */ 3569 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED; 3570 3571 return 1; 3572 } 3573 3574 int iwl_mvm_resume(struct ieee80211_hw *hw) 3575 { 3576 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3577 int ret; 3578 3579 ret = __iwl_mvm_resume(mvm, false); 3580 3581 iwl_mvm_resume_tcm(mvm); 3582 3583 iwl_fw_runtime_resume(&mvm->fwrt); 3584 3585 return ret; 3586 } 3587 3588 void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled) 3589 { 3590 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3591 3592 device_set_wakeup_enable(mvm->trans->dev, enabled); 3593 } 3594 3595 void iwl_mvm_fast_suspend(struct iwl_mvm *mvm) 3596 { 3597 struct iwl_d3_manager_config d3_cfg_cmd_data = {}; 3598 int ret; 3599 3600 lockdep_assert_held(&mvm->mutex); 3601 3602 IWL_DEBUG_WOWLAN(mvm, "Starting fast suspend flow\n"); 3603 3604 mvm->fast_resume = true; 3605 set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 3606 3607 WARN_ON(iwl_mvm_power_update_device(mvm)); 3608 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_D3; 3609 ret = iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD, CMD_SEND_IN_D3, 3610 sizeof(d3_cfg_cmd_data), &d3_cfg_cmd_data); 3611 if (ret) 3612 IWL_ERR(mvm, 3613 "fast suspend: couldn't send D3_CONFIG_CMD %d\n", ret); 3614 3615 WARN_ON(iwl_mvm_power_update_mac(mvm)); 3616 3617 ret = iwl_trans_d3_suspend(mvm->trans, false, false); 3618 if (ret) 3619 IWL_ERR(mvm, "fast suspend: trans_d3_suspend failed %d\n", ret); 3620 } 3621 3622 int iwl_mvm_fast_resume(struct iwl_mvm *mvm) 3623 { 3624 struct iwl_d3_data d3_data = { 3625 .notif_expected = 3626 IWL_D3_NOTIF_D3_END_NOTIF, 3627 }; 3628 int ret; 3629 3630 lockdep_assert_held(&mvm->mutex); 3631 3632 IWL_DEBUG_WOWLAN(mvm, "Starting the fast resume flow\n"); 3633 3634 mvm->last_reset_or_resume_time_jiffies = jiffies; 3635 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt); 3636 3637 if (iwl_mvm_check_rt_status(mvm, NULL)) { 3638 set_bit(STATUS_FW_ERROR, &mvm->trans->status); 3639 iwl_mvm_dump_nic_error_log(mvm); 3640 iwl_dbg_tlv_time_point(&mvm->fwrt, 3641 IWL_FW_INI_TIME_POINT_FW_ASSERT, NULL); 3642 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert, 3643 false, 0); 3644 return -ENODEV; 3645 } 3646 ret = iwl_mvm_d3_notif_wait(mvm, &d3_data); 3647 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 3648 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED; 3649 mvm->fast_resume = false; 3650 3651 if (ret) 3652 IWL_ERR(mvm, "Couldn't get the d3 notif %d\n", ret); 3653 3654 return ret; 3655 } 3656 3657 #ifdef CONFIG_IWLWIFI_DEBUGFS 3658 static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file) 3659 { 3660 struct iwl_mvm *mvm = inode->i_private; 3661 int err; 3662 3663 if (mvm->d3_test_active) 3664 return -EBUSY; 3665 3666 file->private_data = inode->i_private; 3667 3668 iwl_mvm_pause_tcm(mvm, true); 3669 3670 iwl_fw_runtime_suspend(&mvm->fwrt); 3671 3672 /* start pseudo D3 */ 3673 rtnl_lock(); 3674 wiphy_lock(mvm->hw->wiphy); 3675 err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true); 3676 wiphy_unlock(mvm->hw->wiphy); 3677 rtnl_unlock(); 3678 if (err > 0) 3679 err = -EINVAL; 3680 if (err) 3681 return err; 3682 3683 mvm->d3_test_active = true; 3684 mvm->keep_vif = NULL; 3685 return 0; 3686 } 3687 3688 static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf, 3689 size_t count, loff_t *ppos) 3690 { 3691 struct iwl_mvm *mvm = file->private_data; 3692 unsigned long end = jiffies + 60 * HZ; 3693 u32 pme_asserted; 3694 3695 while (true) { 3696 /* read pme_ptr if available */ 3697 if (mvm->d3_test_pme_ptr) { 3698 pme_asserted = iwl_trans_read_mem32(mvm->trans, 3699 mvm->d3_test_pme_ptr); 3700 if (pme_asserted) 3701 break; 3702 } 3703 3704 if (msleep_interruptible(100)) 3705 break; 3706 3707 if (time_is_before_jiffies(end)) { 3708 IWL_ERR(mvm, 3709 "ending pseudo-D3 with timeout after ~60 seconds\n"); 3710 return -ETIMEDOUT; 3711 } 3712 } 3713 3714 return 0; 3715 } 3716 3717 static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac, 3718 struct ieee80211_vif *vif) 3719 { 3720 /* skip the one we keep connection on */ 3721 if (_data == vif) 3722 return; 3723 3724 if (vif->type == NL80211_IFTYPE_STATION) 3725 ieee80211_connection_loss(vif); 3726 } 3727 3728 static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file) 3729 { 3730 struct iwl_mvm *mvm = inode->i_private; 3731 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 3732 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 3733 3734 mvm->d3_test_active = false; 3735 3736 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt); 3737 3738 rtnl_lock(); 3739 wiphy_lock(mvm->hw->wiphy); 3740 __iwl_mvm_resume(mvm, true); 3741 wiphy_unlock(mvm->hw->wiphy); 3742 rtnl_unlock(); 3743 3744 iwl_mvm_resume_tcm(mvm); 3745 3746 iwl_fw_runtime_resume(&mvm->fwrt); 3747 3748 iwl_abort_notification_waits(&mvm->notif_wait); 3749 if (!unified_image) { 3750 int remaining_time = 10; 3751 3752 ieee80211_restart_hw(mvm->hw); 3753 3754 /* wait for restart and disconnect all interfaces */ 3755 while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 3756 remaining_time > 0) { 3757 remaining_time--; 3758 msleep(1000); 3759 } 3760 3761 if (remaining_time == 0) 3762 IWL_ERR(mvm, "Timed out waiting for HW restart!\n"); 3763 } 3764 3765 ieee80211_iterate_active_interfaces_atomic( 3766 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 3767 iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif); 3768 3769 return 0; 3770 } 3771 3772 const struct file_operations iwl_dbgfs_d3_test_ops = { 3773 .open = iwl_mvm_d3_test_open, 3774 .read = iwl_mvm_d3_test_read, 3775 .release = iwl_mvm_d3_test_release, 3776 }; 3777 #endif 3778