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_v6 *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 if (iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_CONFIGURATION, 0) < 7) 952 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, wowlan_config_cmd); 953 954 if (wowlan->disconnect) 955 wowlan_config_cmd->wakeup_filter |= 956 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS | 957 IWL_WOWLAN_WAKEUP_LINK_CHANGE); 958 if (wowlan->magic_pkt) 959 wowlan_config_cmd->wakeup_filter |= 960 cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET); 961 if (wowlan->gtk_rekey_failure) 962 wowlan_config_cmd->wakeup_filter |= 963 cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL); 964 if (wowlan->eap_identity_req) 965 wowlan_config_cmd->wakeup_filter |= 966 cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ); 967 if (wowlan->four_way_handshake) 968 wowlan_config_cmd->wakeup_filter |= 969 cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE); 970 if (wowlan->n_patterns) 971 wowlan_config_cmd->wakeup_filter |= 972 cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH); 973 974 if (wowlan->rfkill_release) 975 wowlan_config_cmd->wakeup_filter |= 976 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT); 977 978 if (wowlan->tcp) { 979 /* 980 * Set the "link change" (really "link lost") flag as well 981 * since that implies losing the TCP connection. 982 */ 983 wowlan_config_cmd->wakeup_filter |= 984 cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS | 985 IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE | 986 IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET | 987 IWL_WOWLAN_WAKEUP_LINK_CHANGE); 988 } 989 990 if (wowlan->any) { 991 wowlan_config_cmd->wakeup_filter |= 992 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS | 993 IWL_WOWLAN_WAKEUP_LINK_CHANGE | 994 IWL_WOWLAN_WAKEUP_RX_FRAME | 995 IWL_WOWLAN_WAKEUP_BCN_FILTERING); 996 } 997 998 return 0; 999 } 1000 1001 static int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm, 1002 struct ieee80211_vif *vif, 1003 struct iwl_mvm_vif_link_info *mvm_link) 1004 { 1005 bool unified = fw_has_capa(&mvm->fw->ucode_capa, 1006 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1007 struct wowlan_key_reprogram_data key_data = {}; 1008 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1009 int ret; 1010 u8 cmd_ver; 1011 size_t cmd_size; 1012 1013 if (!unified) { 1014 /* 1015 * if we have to configure keys, call ieee80211_iter_keys(), 1016 * as we need non-atomic context in order to take the 1017 * required locks. 1018 */ 1019 /* 1020 * Note that currently we don't use CMD_ASYNC in the iterator. 1021 * In case of key_data.configure_keys, all the configured 1022 * commands are SYNC, and iwl_mvm_wowlan_program_keys() will 1023 * take care of locking/unlocking mvm->mutex. 1024 */ 1025 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_program_keys, 1026 &key_data); 1027 1028 if (key_data.error) 1029 return -EIO; 1030 } 1031 1032 ret = iwl_mvm_wowlan_config_rsc_tsc(mvm, vif, mvm_link); 1033 if (ret) 1034 return ret; 1035 1036 if (!fw_has_api(&mvm->fw->ucode_capa, 1037 IWL_UCODE_TLV_API_TKIP_MIC_KEYS)) { 1038 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TKIP_PARAM, 1039 IWL_FW_CMD_VER_UNKNOWN); 1040 struct wowlan_key_tkip_data tkip_data = {}; 1041 int size; 1042 1043 if (ver == 2) { 1044 size = sizeof(tkip_data.tkip); 1045 tkip_data.tkip.sta_id = 1046 cpu_to_le32(mvm_link->ap_sta_id); 1047 } else if (ver == 1 || ver == IWL_FW_CMD_VER_UNKNOWN) { 1048 size = sizeof(struct iwl_wowlan_tkip_params_cmd_ver_1); 1049 } else { 1050 WARN_ON_ONCE(1); 1051 return -EINVAL; 1052 } 1053 1054 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_get_tkip_data, 1055 &tkip_data); 1056 1057 if (tkip_data.have_tkip_keys) { 1058 /* send relevant data according to CMD version */ 1059 ret = iwl_mvm_send_cmd_pdu(mvm, 1060 WOWLAN_TKIP_PARAM, 1061 CMD_ASYNC, size, 1062 &tkip_data.tkip); 1063 if (ret) 1064 return ret; 1065 } 1066 } 1067 1068 /* configure rekey data only if offloaded rekey is supported (d3) */ 1069 if (mvmvif->rekey_data.valid) { 1070 struct iwl_wowlan_kek_kck_material_cmd_v4 kek_kck_cmd = {}; 1071 struct iwl_wowlan_kek_kck_material_cmd_v4 *_kek_kck_cmd = 1072 &kek_kck_cmd; 1073 struct wowlan_key_gtk_type_iter gtk_type_data = { 1074 .kek_kck_cmd = _kek_kck_cmd, 1075 }; 1076 1077 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, 1078 WOWLAN_KEK_KCK_MATERIAL, 1079 IWL_FW_CMD_VER_UNKNOWN); 1080 if (WARN_ON(cmd_ver != 2 && cmd_ver != 3 && cmd_ver != 4 && 1081 cmd_ver != IWL_FW_CMD_VER_UNKNOWN)) 1082 return -EINVAL; 1083 1084 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_gtk_type_iter, 1085 >k_type_data); 1086 1087 memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck, 1088 mvmvif->rekey_data.kck_len); 1089 kek_kck_cmd.kck_len = cpu_to_le16(mvmvif->rekey_data.kck_len); 1090 memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek, 1091 mvmvif->rekey_data.kek_len); 1092 kek_kck_cmd.kek_len = cpu_to_le16(mvmvif->rekey_data.kek_len); 1093 kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr; 1094 kek_kck_cmd.akm = cpu_to_le32(mvmvif->rekey_data.akm); 1095 kek_kck_cmd.sta_id = cpu_to_le32(mvm_link->ap_sta_id); 1096 1097 if (cmd_ver == 4) { 1098 cmd_size = sizeof(struct iwl_wowlan_kek_kck_material_cmd_v4); 1099 } else { 1100 if (cmd_ver == 3) 1101 cmd_size = 1102 sizeof(struct iwl_wowlan_kek_kck_material_cmd_v3); 1103 else 1104 cmd_size = 1105 sizeof(struct iwl_wowlan_kek_kck_material_cmd_v2); 1106 /* skip the sta_id at the beginning */ 1107 _kek_kck_cmd = (void *) 1108 ((u8 *)_kek_kck_cmd + sizeof(kek_kck_cmd.sta_id)); 1109 } 1110 1111 IWL_DEBUG_WOWLAN(mvm, "setting akm %d\n", 1112 mvmvif->rekey_data.akm); 1113 1114 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_KEK_KCK_MATERIAL, 1115 CMD_ASYNC, cmd_size, _kek_kck_cmd); 1116 if (ret) 1117 return ret; 1118 } 1119 1120 return 0; 1121 } 1122 1123 static int 1124 iwl_mvm_wowlan_config(struct iwl_mvm *mvm, 1125 struct cfg80211_wowlan *wowlan, 1126 struct iwl_wowlan_config_cmd_v6 *wowlan_config_cmd_v6, 1127 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif, 1128 struct iwl_mvm_vif_link_info *mvm_link, 1129 struct ieee80211_sta *ap_sta) 1130 { 1131 int ret; 1132 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 1133 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1134 1135 mvm->offload_tid = wowlan_config_cmd_v6->offloading_tid; 1136 1137 if (!unified_image) { 1138 ret = iwl_mvm_switch_to_d3(mvm); 1139 if (ret) 1140 return ret; 1141 1142 ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta); 1143 if (ret) 1144 return ret; 1145 } 1146 1147 ret = iwl_mvm_wowlan_config_key_params(mvm, vif, mvm_link); 1148 if (ret) 1149 return ret; 1150 1151 if (iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_CONFIGURATION, 0) > 6) { 1152 struct iwl_wowlan_config_cmd wowlan_config_cmd = { 1153 .wakeup_filter = wowlan_config_cmd_v6->wakeup_filter, 1154 .wowlan_ba_teardown_tids = 1155 wowlan_config_cmd_v6->wowlan_ba_teardown_tids, 1156 .is_11n_connection = 1157 wowlan_config_cmd_v6->is_11n_connection, 1158 .offloading_tid = wowlan_config_cmd_v6->offloading_tid, 1159 .flags = wowlan_config_cmd_v6->flags, 1160 .sta_id = wowlan_config_cmd_v6->sta_id, 1161 }; 1162 1163 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0, 1164 sizeof(wowlan_config_cmd), 1165 &wowlan_config_cmd); 1166 } else { 1167 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0, 1168 sizeof(*wowlan_config_cmd_v6), 1169 wowlan_config_cmd_v6); 1170 } 1171 if (ret) 1172 return ret; 1173 1174 if (fw_has_api(&mvm->fw->ucode_capa, 1175 IWL_UCODE_TLV_API_WOWLAN_TCP_SYN_WAKE)) 1176 ret = iwl_mvm_send_patterns(mvm, mvm_link, wowlan); 1177 else 1178 ret = iwl_mvm_send_patterns_v1(mvm, wowlan); 1179 if (ret) 1180 return ret; 1181 1182 return iwl_mvm_send_proto_offload(mvm, vif, false, true, 0, 1183 mvm_link->ap_sta_id); 1184 } 1185 1186 static int 1187 iwl_mvm_netdetect_config(struct iwl_mvm *mvm, 1188 struct cfg80211_wowlan *wowlan, 1189 struct cfg80211_sched_scan_request *nd_config, 1190 struct ieee80211_vif *vif) 1191 { 1192 int ret; 1193 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 1194 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1195 1196 if (!unified_image) { 1197 ret = iwl_mvm_switch_to_d3(mvm); 1198 if (ret) 1199 return ret; 1200 } else { 1201 /* In theory, we wouldn't have to stop a running sched 1202 * scan in order to start another one (for 1203 * net-detect). But in practice this doesn't seem to 1204 * work properly, so stop any running sched_scan now. 1205 */ 1206 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 1207 if (ret) 1208 return ret; 1209 } 1210 1211 ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies, 1212 IWL_MVM_SCAN_NETDETECT); 1213 if (ret) 1214 return ret; 1215 1216 if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels)) 1217 return -EBUSY; 1218 1219 /* save the sched scan matchsets... */ 1220 if (nd_config->n_match_sets) { 1221 mvm->nd_match_sets = kmemdup(nd_config->match_sets, 1222 sizeof(*nd_config->match_sets) * 1223 nd_config->n_match_sets, 1224 GFP_KERNEL); 1225 if (mvm->nd_match_sets) 1226 mvm->n_nd_match_sets = nd_config->n_match_sets; 1227 } 1228 1229 /* ...and the sched scan channels for later reporting */ 1230 mvm->nd_channels = kmemdup(nd_config->channels, 1231 sizeof(*nd_config->channels) * 1232 nd_config->n_channels, 1233 GFP_KERNEL); 1234 if (mvm->nd_channels) 1235 mvm->n_nd_channels = nd_config->n_channels; 1236 1237 return 0; 1238 } 1239 1240 static void iwl_mvm_free_nd(struct iwl_mvm *mvm) 1241 { 1242 kfree(mvm->nd_match_sets); 1243 mvm->nd_match_sets = NULL; 1244 mvm->n_nd_match_sets = 0; 1245 kfree(mvm->nd_channels); 1246 mvm->nd_channels = NULL; 1247 mvm->n_nd_channels = 0; 1248 } 1249 1250 static int __iwl_mvm_suspend(struct ieee80211_hw *hw, 1251 struct cfg80211_wowlan *wowlan, 1252 bool test) 1253 { 1254 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1255 struct ieee80211_vif *vif = NULL; 1256 struct iwl_mvm_vif *mvmvif = NULL; 1257 struct ieee80211_sta *ap_sta = NULL; 1258 struct iwl_mvm_vif_link_info *mvm_link; 1259 struct iwl_d3_manager_config d3_cfg_cmd_data = { 1260 /* 1261 * Program the minimum sleep time to 10 seconds, as many 1262 * platforms have issues processing a wakeup signal while 1263 * still being in the process of suspending. 1264 */ 1265 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000), 1266 }; 1267 struct iwl_host_cmd d3_cfg_cmd = { 1268 .id = D3_CONFIG_CMD, 1269 .flags = CMD_WANT_SKB | CMD_SEND_IN_D3, 1270 .data[0] = &d3_cfg_cmd_data, 1271 .len[0] = sizeof(d3_cfg_cmd_data), 1272 }; 1273 int ret; 1274 int len __maybe_unused; 1275 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 1276 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1277 1278 if (!wowlan) { 1279 /* 1280 * mac80211 shouldn't get here, but for D3 test 1281 * it doesn't warrant a warning 1282 */ 1283 WARN_ON(!test); 1284 return -EINVAL; 1285 } 1286 1287 vif = iwl_mvm_get_bss_vif(mvm); 1288 if (IS_ERR_OR_NULL(vif)) 1289 return 1; 1290 1291 ret = iwl_mvm_block_esr_sync(mvm, vif, IWL_MVM_ESR_BLOCKED_WOWLAN); 1292 if (ret) 1293 return ret; 1294 1295 mutex_lock(&mvm->mutex); 1296 1297 set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 1298 1299 synchronize_net(); 1300 1301 mvmvif = iwl_mvm_vif_from_mac80211(vif); 1302 1303 mvm_link = mvmvif->link[iwl_mvm_get_primary_link(vif)]; 1304 if (WARN_ON_ONCE(!mvm_link)) { 1305 ret = -EINVAL; 1306 goto out_noreset; 1307 } 1308 1309 if (mvm_link->ap_sta_id == IWL_INVALID_STA) { 1310 /* if we're not associated, this must be netdetect */ 1311 if (!wowlan->nd_config) { 1312 ret = 1; 1313 goto out_noreset; 1314 } 1315 1316 ret = iwl_mvm_netdetect_config( 1317 mvm, wowlan, wowlan->nd_config, vif); 1318 if (ret) 1319 goto out; 1320 1321 mvm->net_detect = true; 1322 } else { 1323 struct iwl_wowlan_config_cmd_v6 wowlan_config_cmd = { 1324 .offloading_tid = 0, 1325 }; 1326 1327 wowlan_config_cmd.sta_id = mvm_link->ap_sta_id; 1328 1329 ap_sta = rcu_dereference_protected( 1330 mvm->fw_id_to_mac_id[mvm_link->ap_sta_id], 1331 lockdep_is_held(&mvm->mutex)); 1332 if (IS_ERR_OR_NULL(ap_sta)) { 1333 ret = -EINVAL; 1334 goto out_noreset; 1335 } 1336 1337 ret = iwl_mvm_sta_ensure_queue( 1338 mvm, ap_sta->txq[wowlan_config_cmd.offloading_tid]); 1339 if (ret) 1340 goto out_noreset; 1341 1342 ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd, 1343 vif, mvmvif, ap_sta); 1344 if (ret) 1345 goto out_noreset; 1346 ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd, 1347 vif, mvmvif, mvm_link, ap_sta); 1348 if (ret) 1349 goto out; 1350 1351 mvm->net_detect = false; 1352 } 1353 1354 ret = iwl_mvm_power_update_device(mvm); 1355 if (ret) 1356 goto out; 1357 1358 ret = iwl_mvm_power_update_mac(mvm); 1359 if (ret) 1360 goto out; 1361 1362 #ifdef CONFIG_IWLWIFI_DEBUGFS 1363 if (mvm->d3_wake_sysassert) 1364 d3_cfg_cmd_data.wakeup_flags |= 1365 cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR); 1366 #endif 1367 1368 /* 1369 * Prior to 9000 device family the driver needs to stop the dbg 1370 * recording before entering D3. In later devices the FW stops the 1371 * recording automatically. 1372 */ 1373 if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_9000) 1374 iwl_fw_dbg_stop_restart_recording(&mvm->fwrt, NULL, true); 1375 1376 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_D3; 1377 1378 /* must be last -- this switches firmware state */ 1379 ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd); 1380 if (ret) 1381 goto out; 1382 #ifdef CONFIG_IWLWIFI_DEBUGFS 1383 len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt); 1384 if (len >= sizeof(u32)) { 1385 mvm->d3_test_pme_ptr = 1386 le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data); 1387 } 1388 #endif 1389 iwl_free_resp(&d3_cfg_cmd); 1390 1391 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1392 1393 ret = iwl_trans_d3_suspend(mvm->trans, test, !unified_image); 1394 out: 1395 if (ret < 0) { 1396 iwl_mvm_free_nd(mvm); 1397 1398 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 1399 } 1400 out_noreset: 1401 mutex_unlock(&mvm->mutex); 1402 1403 return ret; 1404 } 1405 1406 int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) 1407 { 1408 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1409 1410 iwl_mvm_pause_tcm(mvm, true); 1411 1412 mutex_lock(&mvm->mutex); 1413 iwl_fw_runtime_suspend(&mvm->fwrt); 1414 mutex_unlock(&mvm->mutex); 1415 1416 return __iwl_mvm_suspend(hw, wowlan, false); 1417 } 1418 1419 struct iwl_multicast_key_data { 1420 u8 key[WOWLAN_KEY_MAX_SIZE]; 1421 u8 len; 1422 u8 flags; 1423 u8 id; 1424 u8 ipn[6]; 1425 }; 1426 1427 /* converted data from the different status responses */ 1428 struct iwl_wowlan_status_data { 1429 u64 replay_ctr; 1430 u32 num_of_gtk_rekeys; 1431 u32 received_beacons; 1432 u32 wakeup_reasons; 1433 u32 wake_packet_length; 1434 u32 wake_packet_bufsize; 1435 u16 pattern_number; 1436 u16 non_qos_seq_ctr; 1437 u16 qos_seq_ctr[8]; 1438 u8 tid_tear_down; 1439 u8 tid_offloaded_tx; 1440 1441 struct { 1442 /* including RX MIC key for TKIP */ 1443 u8 key[WOWLAN_KEY_MAX_SIZE]; 1444 u8 len; 1445 u8 flags; 1446 u8 id; 1447 } gtk[WOWLAN_GTK_KEYS_NUM]; 1448 1449 struct { 1450 /* 1451 * We store both the TKIP and AES representations 1452 * coming from the firmware because we decode the 1453 * data from there before we iterate the keys and 1454 * know which one we need. 1455 */ 1456 struct { 1457 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT]; 1458 } tkip, aes; 1459 1460 /* 1461 * We use -1 for when we have valid data but don't know 1462 * the key ID from firmware, and thus it needs to be 1463 * installed with the last key (depending on rekeying). 1464 */ 1465 s8 key_id; 1466 bool valid; 1467 } gtk_seq[2]; 1468 1469 struct { 1470 /* Same as above */ 1471 struct { 1472 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT]; 1473 u64 tx_pn; 1474 } tkip, aes; 1475 } ptk; 1476 1477 struct iwl_multicast_key_data igtk; 1478 struct iwl_multicast_key_data bigtk[WOWLAN_BIGTK_KEYS_NUM]; 1479 1480 int num_mlo_keys; 1481 struct iwl_wowlan_mlo_gtk mlo_keys[WOWLAN_MAX_MLO_KEYS]; 1482 1483 u8 *wake_packet; 1484 }; 1485 1486 static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm, 1487 struct ieee80211_vif *vif, 1488 struct iwl_wowlan_status_data *status) 1489 { 1490 struct sk_buff *pkt = NULL; 1491 struct cfg80211_wowlan_wakeup wakeup = { 1492 .pattern_idx = -1, 1493 }; 1494 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; 1495 u32 reasons = status->wakeup_reasons; 1496 1497 if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) { 1498 wakeup_report = NULL; 1499 goto report; 1500 } 1501 1502 pm_wakeup_event(mvm->dev, 0); 1503 1504 if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET) 1505 wakeup.magic_pkt = true; 1506 1507 if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN) 1508 wakeup.pattern_idx = 1509 status->pattern_number; 1510 1511 if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 1512 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH | 1513 IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)) 1514 wakeup.disconnect = true; 1515 1516 if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE) 1517 wakeup.gtk_rekey_failure = true; 1518 1519 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 1520 wakeup.rfkill_release = true; 1521 1522 if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST) 1523 wakeup.eap_identity_req = true; 1524 1525 if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE) 1526 wakeup.four_way_handshake = true; 1527 1528 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS) 1529 wakeup.tcp_connlost = true; 1530 1531 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE) 1532 wakeup.tcp_nomoretokens = true; 1533 1534 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET) 1535 wakeup.tcp_match = true; 1536 1537 if (reasons & IWL_WAKEUP_BY_11W_UNPROTECTED_DEAUTH_OR_DISASSOC) 1538 wakeup.unprot_deauth_disassoc = true; 1539 1540 if (status->wake_packet) { 1541 int pktsize = status->wake_packet_bufsize; 1542 int pktlen = status->wake_packet_length; 1543 const u8 *pktdata = status->wake_packet; 1544 const struct ieee80211_hdr *hdr = (const void *)pktdata; 1545 int truncated = pktlen - pktsize; 1546 1547 /* this would be a firmware bug */ 1548 if (WARN_ON_ONCE(truncated < 0)) 1549 truncated = 0; 1550 1551 if (ieee80211_is_data(hdr->frame_control)) { 1552 int hdrlen = ieee80211_hdrlen(hdr->frame_control); 1553 int ivlen = 0, icvlen = 4; /* also FCS */ 1554 1555 pkt = alloc_skb(pktsize, GFP_KERNEL); 1556 if (!pkt) 1557 goto report; 1558 1559 skb_put_data(pkt, pktdata, hdrlen); 1560 pktdata += hdrlen; 1561 pktsize -= hdrlen; 1562 1563 if (ieee80211_has_protected(hdr->frame_control)) { 1564 /* 1565 * This is unlocked and using gtk_i(c)vlen, 1566 * but since everything is under RTNL still 1567 * that's not really a problem - changing 1568 * it would be difficult. 1569 */ 1570 if (is_multicast_ether_addr(hdr->addr1)) { 1571 ivlen = mvm->gtk_ivlen; 1572 icvlen += mvm->gtk_icvlen; 1573 } else { 1574 ivlen = mvm->ptk_ivlen; 1575 icvlen += mvm->ptk_icvlen; 1576 } 1577 } 1578 1579 /* if truncated, FCS/ICV is (partially) gone */ 1580 if (truncated >= icvlen) { 1581 icvlen = 0; 1582 truncated -= icvlen; 1583 } else { 1584 icvlen -= truncated; 1585 truncated = 0; 1586 } 1587 1588 pktsize -= ivlen + icvlen; 1589 pktdata += ivlen; 1590 1591 skb_put_data(pkt, pktdata, pktsize); 1592 1593 if (ieee80211_data_to_8023(pkt, vif->addr, vif->type)) 1594 goto report; 1595 wakeup.packet = pkt->data; 1596 wakeup.packet_present_len = pkt->len; 1597 wakeup.packet_len = pkt->len - truncated; 1598 wakeup.packet_80211 = false; 1599 } else { 1600 int fcslen = 4; 1601 1602 if (truncated >= 4) { 1603 truncated -= 4; 1604 fcslen = 0; 1605 } else { 1606 fcslen -= truncated; 1607 truncated = 0; 1608 } 1609 pktsize -= fcslen; 1610 wakeup.packet = status->wake_packet; 1611 wakeup.packet_present_len = pktsize; 1612 wakeup.packet_len = pktlen - truncated; 1613 wakeup.packet_80211 = true; 1614 } 1615 } 1616 1617 report: 1618 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); 1619 kfree_skb(pkt); 1620 } 1621 1622 static void iwl_mvm_le64_to_aes_seq(__le64 le_pn, struct ieee80211_key_seq *seq) 1623 { 1624 u64 pn = le64_to_cpu(le_pn); 1625 1626 seq->ccmp.pn[0] = pn >> 40; 1627 seq->ccmp.pn[1] = pn >> 32; 1628 seq->ccmp.pn[2] = pn >> 24; 1629 seq->ccmp.pn[3] = pn >> 16; 1630 seq->ccmp.pn[4] = pn >> 8; 1631 seq->ccmp.pn[5] = pn; 1632 } 1633 1634 static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc, 1635 struct ieee80211_key_seq *seq) 1636 { 1637 iwl_mvm_le64_to_aes_seq(sc->pn, seq); 1638 } 1639 1640 static void iwl_mvm_le64_to_tkip_seq(__le64 le_pn, struct ieee80211_key_seq *seq) 1641 { 1642 u64 pn = le64_to_cpu(le_pn); 1643 1644 seq->tkip.iv16 = (u16)pn; 1645 seq->tkip.iv32 = (u32)(pn >> 16); 1646 } 1647 1648 static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc, 1649 struct ieee80211_key_seq *seq) 1650 { 1651 seq->tkip.iv32 = le32_to_cpu(sc->iv32); 1652 seq->tkip.iv16 = le16_to_cpu(sc->iv16); 1653 } 1654 1655 static void iwl_mvm_set_key_rx_seq_tids(struct ieee80211_key_conf *key, 1656 struct ieee80211_key_seq *seq) 1657 { 1658 int tid; 1659 1660 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) 1661 ieee80211_set_key_rx_seq(key, tid, &seq[tid]); 1662 } 1663 1664 static void iwl_mvm_set_aes_ptk_rx_seq(struct iwl_mvm *mvm, 1665 struct iwl_wowlan_status_data *status, 1666 struct ieee80211_sta *sta, 1667 struct ieee80211_key_conf *key) 1668 { 1669 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1670 struct iwl_mvm_key_pn *ptk_pn; 1671 int tid; 1672 1673 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.aes.seq); 1674 1675 if (!iwl_mvm_has_new_rx_api(mvm)) 1676 return; 1677 1678 1679 rcu_read_lock(); 1680 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]); 1681 if (WARN_ON(!ptk_pn)) { 1682 rcu_read_unlock(); 1683 return; 1684 } 1685 1686 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1687 int i; 1688 1689 for (i = 1; i < mvm->trans->num_rx_queues; i++) 1690 memcpy(ptk_pn->q[i].pn[tid], 1691 status->ptk.aes.seq[tid].ccmp.pn, 1692 IEEE80211_CCMP_PN_LEN); 1693 } 1694 rcu_read_unlock(); 1695 } 1696 1697 static void iwl_mvm_convert_key_counters(struct iwl_wowlan_status_data *status, 1698 union iwl_all_tsc_rsc *sc) 1699 { 1700 int i; 1701 1702 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT); 1703 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC); 1704 1705 /* GTK RX counters */ 1706 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1707 iwl_mvm_tkip_sc_to_seq(&sc->tkip.multicast_rsc[i], 1708 &status->gtk_seq[0].tkip.seq[i]); 1709 iwl_mvm_aes_sc_to_seq(&sc->aes.multicast_rsc[i], 1710 &status->gtk_seq[0].aes.seq[i]); 1711 } 1712 status->gtk_seq[0].valid = true; 1713 status->gtk_seq[0].key_id = -1; 1714 1715 /* PTK TX counter */ 1716 status->ptk.tkip.tx_pn = (u64)le16_to_cpu(sc->tkip.tsc.iv16) | 1717 ((u64)le32_to_cpu(sc->tkip.tsc.iv32) << 16); 1718 status->ptk.aes.tx_pn = le64_to_cpu(sc->aes.tsc.pn); 1719 1720 /* PTK RX counters */ 1721 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1722 iwl_mvm_tkip_sc_to_seq(&sc->tkip.unicast_rsc[i], 1723 &status->ptk.tkip.seq[i]); 1724 iwl_mvm_aes_sc_to_seq(&sc->aes.unicast_rsc[i], 1725 &status->ptk.aes.seq[i]); 1726 } 1727 } 1728 1729 static void 1730 iwl_mvm_convert_key_counters_v5_gtk_seq(struct iwl_wowlan_status_data *status, 1731 struct iwl_wowlan_all_rsc_tsc_v5 *sc, 1732 unsigned int idx, unsigned int key_id) 1733 { 1734 int tid; 1735 1736 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1737 iwl_mvm_le64_to_tkip_seq(sc->mcast_rsc[idx][tid], 1738 &status->gtk_seq[idx].tkip.seq[tid]); 1739 iwl_mvm_le64_to_aes_seq(sc->mcast_rsc[idx][tid], 1740 &status->gtk_seq[idx].aes.seq[tid]); 1741 } 1742 1743 status->gtk_seq[idx].valid = true; 1744 status->gtk_seq[idx].key_id = key_id; 1745 } 1746 1747 static void 1748 iwl_mvm_convert_key_counters_v5(struct iwl_wowlan_status_data *status, 1749 struct iwl_wowlan_all_rsc_tsc_v5 *sc) 1750 { 1751 int i, tid; 1752 1753 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT); 1754 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC); 1755 BUILD_BUG_ON(ARRAY_SIZE(sc->mcast_rsc) != ARRAY_SIZE(status->gtk_seq)); 1756 1757 /* GTK RX counters */ 1758 for (i = 0; i < ARRAY_SIZE(sc->mcast_key_id_map); i++) { 1759 u8 entry = sc->mcast_key_id_map[i]; 1760 1761 if (entry < ARRAY_SIZE(sc->mcast_rsc)) 1762 iwl_mvm_convert_key_counters_v5_gtk_seq(status, sc, 1763 entry, i); 1764 } 1765 1766 /* PTK TX counters not needed, assigned in device */ 1767 1768 /* PTK RX counters */ 1769 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1770 iwl_mvm_le64_to_tkip_seq(sc->ucast_rsc[tid], 1771 &status->ptk.tkip.seq[tid]); 1772 iwl_mvm_le64_to_aes_seq(sc->ucast_rsc[tid], 1773 &status->ptk.aes.seq[tid]); 1774 } 1775 } 1776 1777 static void iwl_mvm_set_key_rx_seq_idx(struct ieee80211_key_conf *key, 1778 struct iwl_wowlan_status_data *status, 1779 int idx) 1780 { 1781 switch (key->cipher) { 1782 case WLAN_CIPHER_SUITE_CCMP: 1783 case WLAN_CIPHER_SUITE_GCMP: 1784 case WLAN_CIPHER_SUITE_GCMP_256: 1785 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].aes.seq); 1786 break; 1787 case WLAN_CIPHER_SUITE_TKIP: 1788 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].tkip.seq); 1789 break; 1790 default: 1791 WARN_ON(1); 1792 } 1793 } 1794 1795 static void iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf *key, 1796 struct iwl_wowlan_status_data *status, 1797 bool installed) 1798 { 1799 int i; 1800 1801 for (i = 0; i < ARRAY_SIZE(status->gtk_seq); i++) { 1802 if (!status->gtk_seq[i].valid) 1803 continue; 1804 1805 /* Handle the case where we know the key ID */ 1806 if (status->gtk_seq[i].key_id == key->keyidx) { 1807 s8 new_key_id = -1; 1808 1809 if (status->num_of_gtk_rekeys) 1810 new_key_id = status->gtk[0].flags & 1811 IWL_WOWLAN_GTK_IDX_MASK; 1812 1813 /* Don't install a new key's value to an old key */ 1814 if (new_key_id != key->keyidx) 1815 iwl_mvm_set_key_rx_seq_idx(key, status, i); 1816 continue; 1817 } 1818 1819 /* handle the case where we didn't, last key only */ 1820 if (status->gtk_seq[i].key_id == -1 && 1821 (!status->num_of_gtk_rekeys || installed)) 1822 iwl_mvm_set_key_rx_seq_idx(key, status, i); 1823 } 1824 } 1825 1826 struct iwl_mvm_d3_gtk_iter_data { 1827 struct iwl_mvm *mvm; 1828 struct iwl_wowlan_status_data *status; 1829 u32 gtk_cipher, igtk_cipher, bigtk_cipher; 1830 bool unhandled_cipher, igtk_support, bigtk_support; 1831 int num_keys; 1832 }; 1833 1834 static void iwl_mvm_d3_find_last_keys(struct ieee80211_hw *hw, 1835 struct ieee80211_vif *vif, 1836 struct ieee80211_sta *sta, 1837 struct ieee80211_key_conf *key, 1838 void *_data) 1839 { 1840 struct iwl_mvm_d3_gtk_iter_data *data = _data; 1841 int link_id = vif->active_links ? __ffs(vif->active_links) : -1; 1842 1843 if (link_id >= 0 && key->link_id >= 0 && link_id != key->link_id) 1844 return; 1845 1846 if (data->unhandled_cipher) 1847 return; 1848 1849 switch (key->cipher) { 1850 case WLAN_CIPHER_SUITE_WEP40: 1851 case WLAN_CIPHER_SUITE_WEP104: 1852 /* ignore WEP completely, nothing to do */ 1853 return; 1854 case WLAN_CIPHER_SUITE_CCMP: 1855 case WLAN_CIPHER_SUITE_GCMP: 1856 case WLAN_CIPHER_SUITE_GCMP_256: 1857 case WLAN_CIPHER_SUITE_TKIP: 1858 /* we support these */ 1859 data->gtk_cipher = key->cipher; 1860 break; 1861 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 1862 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 1863 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 1864 case WLAN_CIPHER_SUITE_AES_CMAC: 1865 /* we support these */ 1866 if (data->igtk_support && 1867 (key->keyidx == 4 || key->keyidx == 5)) { 1868 data->igtk_cipher = key->cipher; 1869 } else if (data->bigtk_support && 1870 (key->keyidx == 6 || key->keyidx == 7)) { 1871 data->bigtk_cipher = key->cipher; 1872 } else { 1873 data->unhandled_cipher = true; 1874 return; 1875 } 1876 break; 1877 default: 1878 /* everything else - disconnect from AP */ 1879 data->unhandled_cipher = true; 1880 return; 1881 } 1882 1883 data->num_keys++; 1884 } 1885 1886 static void 1887 iwl_mvm_d3_set_igtk_bigtk_ipn(const struct iwl_multicast_key_data *key, 1888 struct ieee80211_key_seq *seq, u32 cipher) 1889 { 1890 switch (cipher) { 1891 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 1892 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 1893 BUILD_BUG_ON(sizeof(seq->aes_gmac.pn) != sizeof(key->ipn)); 1894 memcpy(seq->aes_gmac.pn, key->ipn, sizeof(seq->aes_gmac.pn)); 1895 break; 1896 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 1897 case WLAN_CIPHER_SUITE_AES_CMAC: 1898 BUILD_BUG_ON(sizeof(seq->aes_cmac.pn) != sizeof(key->ipn)); 1899 memcpy(seq->aes_cmac.pn, key->ipn, sizeof(seq->aes_cmac.pn)); 1900 break; 1901 default: 1902 WARN_ON(1); 1903 } 1904 } 1905 1906 static void 1907 iwl_mvm_d3_update_igtk_bigtk(struct iwl_wowlan_status_data *status, 1908 struct ieee80211_key_conf *key, 1909 struct iwl_multicast_key_data *key_data) 1910 { 1911 if (status->num_of_gtk_rekeys && key_data->len) { 1912 /* remove rekeyed key */ 1913 ieee80211_remove_key(key); 1914 } else { 1915 struct ieee80211_key_seq seq; 1916 1917 iwl_mvm_d3_set_igtk_bigtk_ipn(key_data, 1918 &seq, 1919 key->cipher); 1920 ieee80211_set_key_rx_seq(key, 0, &seq); 1921 } 1922 } 1923 1924 static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw, 1925 struct ieee80211_vif *vif, 1926 struct ieee80211_sta *sta, 1927 struct ieee80211_key_conf *key, 1928 void *_data) 1929 { 1930 struct iwl_mvm_d3_gtk_iter_data *data = _data; 1931 struct iwl_wowlan_status_data *status = data->status; 1932 s8 keyidx; 1933 int link_id = vif->active_links ? __ffs(vif->active_links) : -1; 1934 1935 if (link_id >= 0 && key->link_id >= 0 && link_id != key->link_id) 1936 return; 1937 1938 if (data->unhandled_cipher) 1939 return; 1940 1941 switch (key->cipher) { 1942 case WLAN_CIPHER_SUITE_WEP40: 1943 case WLAN_CIPHER_SUITE_WEP104: 1944 /* ignore WEP completely, nothing to do */ 1945 return; 1946 case WLAN_CIPHER_SUITE_CCMP: 1947 case WLAN_CIPHER_SUITE_GCMP: 1948 case WLAN_CIPHER_SUITE_GCMP_256: 1949 if (sta) { 1950 atomic64_set(&key->tx_pn, status->ptk.aes.tx_pn); 1951 iwl_mvm_set_aes_ptk_rx_seq(data->mvm, status, sta, key); 1952 return; 1953 } 1954 fallthrough; 1955 case WLAN_CIPHER_SUITE_TKIP: 1956 if (sta) { 1957 atomic64_set(&key->tx_pn, status->ptk.tkip.tx_pn); 1958 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.tkip.seq); 1959 return; 1960 } 1961 keyidx = key->keyidx; 1962 /* The current key is always sent by the FW, even if it wasn't 1963 * rekeyed during D3. 1964 * We remove an existing key if it has the same index as 1965 * a new key 1966 */ 1967 if (status->num_of_gtk_rekeys && 1968 ((status->gtk[0].len && keyidx == status->gtk[0].id) || 1969 (status->gtk[1].len && keyidx == status->gtk[1].id))) { 1970 ieee80211_remove_key(key); 1971 } else { 1972 iwl_mvm_set_key_rx_seq(key, data->status, false); 1973 } 1974 break; 1975 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 1976 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 1977 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 1978 case WLAN_CIPHER_SUITE_AES_CMAC: 1979 if (key->keyidx == 4 || key->keyidx == 5) { 1980 iwl_mvm_d3_update_igtk_bigtk(status, key, 1981 &status->igtk); 1982 } 1983 if (key->keyidx == 6 || key->keyidx == 7) { 1984 u8 idx = key->keyidx == status->bigtk[1].id; 1985 1986 iwl_mvm_d3_update_igtk_bigtk(status, key, 1987 &status->bigtk[idx]); 1988 } 1989 } 1990 } 1991 1992 struct iwl_mvm_d3_mlo_old_keys { 1993 u32 cipher[IEEE80211_MLD_MAX_NUM_LINKS][WOWLAN_MLO_GTK_KEY_NUM_TYPES]; 1994 struct ieee80211_key_conf *key[IEEE80211_MLD_MAX_NUM_LINKS][8]; 1995 }; 1996 1997 static void iwl_mvm_mlo_key_ciphers(struct ieee80211_hw *hw, 1998 struct ieee80211_vif *vif, 1999 struct ieee80211_sta *sta, 2000 struct ieee80211_key_conf *key, 2001 void *data) 2002 { 2003 struct iwl_mvm_d3_mlo_old_keys *old_keys = data; 2004 enum iwl_wowlan_mlo_gtk_type key_type; 2005 2006 if (key->link_id < 0) 2007 return; 2008 2009 if (WARN_ON(key->link_id >= IEEE80211_MLD_MAX_NUM_LINKS || 2010 key->keyidx >= 8)) 2011 return; 2012 2013 if (WARN_ON(old_keys->key[key->link_id][key->keyidx])) 2014 return; 2015 2016 switch (key->cipher) { 2017 case WLAN_CIPHER_SUITE_CCMP: 2018 case WLAN_CIPHER_SUITE_GCMP: 2019 case WLAN_CIPHER_SUITE_GCMP_256: 2020 key_type = WOWLAN_MLO_GTK_KEY_TYPE_GTK; 2021 break; 2022 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 2023 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 2024 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 2025 case WLAN_CIPHER_SUITE_AES_CMAC: 2026 if (key->keyidx == 4 || key->keyidx == 5) { 2027 key_type = WOWLAN_MLO_GTK_KEY_TYPE_IGTK; 2028 break; 2029 } else if (key->keyidx == 6 || key->keyidx == 7) { 2030 key_type = WOWLAN_MLO_GTK_KEY_TYPE_BIGTK; 2031 break; 2032 } 2033 return; 2034 default: 2035 /* ignore WEP/TKIP or unknown ciphers */ 2036 return; 2037 } 2038 2039 old_keys->cipher[key->link_id][key_type] = key->cipher; 2040 old_keys->key[key->link_id][key->keyidx] = key; 2041 } 2042 2043 static bool iwl_mvm_mlo_gtk_rekey(struct iwl_wowlan_status_data *status, 2044 struct ieee80211_vif *vif, 2045 struct iwl_mvm *mvm) 2046 { 2047 int i; 2048 struct iwl_mvm_d3_mlo_old_keys *old_keys; 2049 bool ret = true; 2050 2051 IWL_DEBUG_WOWLAN(mvm, "Num of MLO Keys: %d\n", status->num_mlo_keys); 2052 if (!status->num_mlo_keys) 2053 return true; 2054 2055 old_keys = kzalloc(sizeof(*old_keys), GFP_KERNEL); 2056 if (!old_keys) 2057 return false; 2058 2059 /* find the cipher for each mlo key */ 2060 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_mlo_key_ciphers, old_keys); 2061 2062 for (i = 0; i < status->num_mlo_keys; i++) { 2063 struct iwl_wowlan_mlo_gtk *mlo_key = &status->mlo_keys[i]; 2064 struct ieee80211_key_conf *key, *old_key; 2065 struct ieee80211_key_seq seq; 2066 struct { 2067 struct ieee80211_key_conf conf; 2068 u8 key[32]; 2069 } conf = {}; 2070 u16 flags = le16_to_cpu(mlo_key->flags); 2071 int j, link_id, key_id, key_type; 2072 2073 link_id = u16_get_bits(flags, WOWLAN_MLO_GTK_FLAG_LINK_ID_MSK); 2074 key_id = u16_get_bits(flags, WOWLAN_MLO_GTK_FLAG_KEY_ID_MSK); 2075 key_type = u16_get_bits(flags, 2076 WOWLAN_MLO_GTK_FLAG_KEY_TYPE_MSK); 2077 2078 if (!(vif->valid_links & BIT(link_id))) 2079 continue; 2080 2081 if (WARN_ON(link_id >= IEEE80211_MLD_MAX_NUM_LINKS || 2082 key_id >= 8 || 2083 key_type >= WOWLAN_MLO_GTK_KEY_NUM_TYPES)) 2084 continue; 2085 2086 conf.conf.cipher = old_keys->cipher[link_id][key_type]; 2087 /* WARN_ON? */ 2088 if (!conf.conf.cipher) 2089 continue; 2090 2091 conf.conf.keylen = 0; 2092 switch (conf.conf.cipher) { 2093 case WLAN_CIPHER_SUITE_CCMP: 2094 case WLAN_CIPHER_SUITE_GCMP: 2095 conf.conf.keylen = WLAN_KEY_LEN_CCMP; 2096 break; 2097 case WLAN_CIPHER_SUITE_GCMP_256: 2098 conf.conf.keylen = WLAN_KEY_LEN_GCMP_256; 2099 break; 2100 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 2101 conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_128; 2102 break; 2103 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 2104 conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_256; 2105 break; 2106 case WLAN_CIPHER_SUITE_AES_CMAC: 2107 conf.conf.keylen = WLAN_KEY_LEN_AES_CMAC; 2108 break; 2109 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 2110 conf.conf.keylen = WLAN_KEY_LEN_BIP_CMAC_256; 2111 break; 2112 } 2113 2114 if (WARN_ON(!conf.conf.keylen || 2115 conf.conf.keylen > sizeof(conf.key))) 2116 continue; 2117 2118 memcpy(conf.conf.key, mlo_key->key, conf.conf.keylen); 2119 conf.conf.keyidx = key_id; 2120 2121 old_key = old_keys->key[link_id][key_id]; 2122 if (old_key) { 2123 IWL_DEBUG_WOWLAN(mvm, 2124 "Remove MLO key id %d, link id %d\n", 2125 key_id, link_id); 2126 ieee80211_remove_key(old_key); 2127 } 2128 2129 IWL_DEBUG_WOWLAN(mvm, "Add MLO key id %d, link id %d\n", 2130 key_id, link_id); 2131 key = ieee80211_gtk_rekey_add(vif, &conf.conf, link_id); 2132 if (WARN_ON(IS_ERR(key))) { 2133 ret = false; 2134 goto out; 2135 } 2136 2137 /* 2138 * mac80211 expects the pn in big-endian 2139 * also note that seq is a union of all cipher types 2140 * (ccmp, gcmp, cmac, gmac), and they all have the same 2141 * pn field (of length 6) so just copy it to ccmp.pn. 2142 */ 2143 for (j = 5; j >= 0; j--) 2144 seq.ccmp.pn[5 - j] = mlo_key->pn[j]; 2145 2146 /* group keys are non-QoS and use TID 0 */ 2147 ieee80211_set_key_rx_seq(key, 0, &seq); 2148 } 2149 2150 out: 2151 kfree(old_keys); 2152 return ret; 2153 } 2154 2155 static bool iwl_mvm_gtk_rekey(struct iwl_wowlan_status_data *status, 2156 struct ieee80211_vif *vif, 2157 struct iwl_mvm *mvm, u32 gtk_cipher) 2158 { 2159 int i, j; 2160 struct ieee80211_key_conf *key; 2161 struct { 2162 struct ieee80211_key_conf conf; 2163 u8 key[32]; 2164 } conf = { 2165 .conf.cipher = gtk_cipher, 2166 }; 2167 int link_id = vif->active_links ? __ffs(vif->active_links) : -1; 2168 2169 BUILD_BUG_ON(WLAN_KEY_LEN_CCMP != WLAN_KEY_LEN_GCMP); 2170 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_CCMP); 2171 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_GCMP_256); 2172 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_TKIP); 2173 BUILD_BUG_ON(sizeof(conf.key) < sizeof(status->gtk[0].key)); 2174 2175 switch (gtk_cipher) { 2176 case WLAN_CIPHER_SUITE_CCMP: 2177 case WLAN_CIPHER_SUITE_GCMP: 2178 conf.conf.keylen = WLAN_KEY_LEN_CCMP; 2179 break; 2180 case WLAN_CIPHER_SUITE_GCMP_256: 2181 conf.conf.keylen = WLAN_KEY_LEN_GCMP_256; 2182 break; 2183 case WLAN_CIPHER_SUITE_TKIP: 2184 conf.conf.keylen = WLAN_KEY_LEN_TKIP; 2185 break; 2186 default: 2187 WARN_ON(1); 2188 } 2189 2190 for (i = 0; i < ARRAY_SIZE(status->gtk); i++) { 2191 if (!status->gtk[i].len) 2192 continue; 2193 2194 conf.conf.keyidx = status->gtk[i].id; 2195 IWL_DEBUG_WOWLAN(mvm, 2196 "Received from FW GTK cipher %d, key index %d\n", 2197 conf.conf.cipher, conf.conf.keyidx); 2198 memcpy(conf.conf.key, status->gtk[i].key, 2199 sizeof(status->gtk[i].key)); 2200 2201 key = ieee80211_gtk_rekey_add(vif, &conf.conf, link_id); 2202 if (IS_ERR(key)) 2203 return false; 2204 2205 for (j = 0; j < ARRAY_SIZE(status->gtk_seq); j++) { 2206 if (!status->gtk_seq[j].valid || 2207 status->gtk_seq[j].key_id != key->keyidx) 2208 continue; 2209 iwl_mvm_set_key_rx_seq_idx(key, status, j); 2210 break; 2211 } 2212 WARN_ON(j == ARRAY_SIZE(status->gtk_seq)); 2213 } 2214 2215 return true; 2216 } 2217 2218 static bool 2219 iwl_mvm_d3_igtk_bigtk_rekey_add(struct iwl_wowlan_status_data *status, 2220 struct ieee80211_vif *vif, u32 cipher, 2221 struct iwl_multicast_key_data *key_data) 2222 { 2223 struct ieee80211_key_conf *key_config; 2224 struct { 2225 struct ieee80211_key_conf conf; 2226 u8 key[WOWLAN_KEY_MAX_SIZE]; 2227 } conf = { 2228 .conf.cipher = cipher, 2229 .conf.keyidx = key_data->id, 2230 }; 2231 struct ieee80211_key_seq seq; 2232 int link_id = vif->active_links ? __ffs(vif->active_links) : -1; 2233 2234 if (!key_data->len) 2235 return true; 2236 2237 iwl_mvm_d3_set_igtk_bigtk_ipn(key_data, &seq, conf.conf.cipher); 2238 2239 switch (cipher) { 2240 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 2241 conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_128; 2242 break; 2243 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 2244 conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_256; 2245 break; 2246 case WLAN_CIPHER_SUITE_AES_CMAC: 2247 conf.conf.keylen = WLAN_KEY_LEN_AES_CMAC; 2248 break; 2249 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 2250 conf.conf.keylen = WLAN_KEY_LEN_BIP_CMAC_256; 2251 break; 2252 default: 2253 WARN_ON(1); 2254 } 2255 BUILD_BUG_ON(sizeof(conf.key) < sizeof(key_data->key)); 2256 memcpy(conf.conf.key, key_data->key, conf.conf.keylen); 2257 2258 key_config = ieee80211_gtk_rekey_add(vif, &conf.conf, link_id); 2259 if (IS_ERR(key_config)) 2260 return false; 2261 ieee80211_set_key_rx_seq(key_config, 0, &seq); 2262 2263 if (key_config->keyidx == 4 || key_config->keyidx == 5) { 2264 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2265 struct iwl_mvm_vif_link_info *mvm_link; 2266 2267 link_id = link_id < 0 ? 0 : link_id; 2268 mvm_link = mvmvif->link[link_id]; 2269 mvm_link->igtk = key_config; 2270 } 2271 2272 return true; 2273 } 2274 2275 static int iwl_mvm_lookup_wowlan_status_ver(struct iwl_mvm *mvm) 2276 { 2277 u8 notif_ver; 2278 2279 if (!fw_has_api(&mvm->fw->ucode_capa, 2280 IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL)) 2281 return 6; 2282 2283 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */ 2284 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP, 2285 WOWLAN_GET_STATUSES, 0); 2286 if (!notif_ver) 2287 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, 2288 WOWLAN_GET_STATUSES, 7); 2289 2290 return notif_ver; 2291 } 2292 2293 static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm, 2294 struct ieee80211_vif *vif, 2295 struct iwl_wowlan_status_data *status) 2296 { 2297 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2298 struct iwl_mvm_d3_gtk_iter_data gtkdata = { 2299 .mvm = mvm, 2300 .status = status, 2301 }; 2302 int i; 2303 u32 disconnection_reasons = 2304 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 2305 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH; 2306 2307 if (!status || !vif->bss_conf.bssid) 2308 return false; 2309 2310 if (iwl_mvm_lookup_wowlan_status_ver(mvm) > 6 || 2311 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2312 WOWLAN_INFO_NOTIFICATION, 2313 0)) 2314 gtkdata.igtk_support = true; 2315 2316 if (iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2317 WOWLAN_INFO_NOTIFICATION, 2318 0) >= 3) 2319 gtkdata.bigtk_support = true; 2320 2321 /* find last GTK that we used initially, if any */ 2322 ieee80211_iter_keys(mvm->hw, vif, 2323 iwl_mvm_d3_find_last_keys, >kdata); 2324 /* not trying to keep connections with MFP/unhandled ciphers */ 2325 if (gtkdata.unhandled_cipher) 2326 return false; 2327 if (!gtkdata.num_keys) 2328 goto out; 2329 2330 /* 2331 * invalidate all other GTKs that might still exist and update 2332 * the one that we used 2333 */ 2334 ieee80211_iter_keys(mvm->hw, vif, 2335 iwl_mvm_d3_update_keys, >kdata); 2336 2337 if (status->num_of_gtk_rekeys) { 2338 __be64 replay_ctr = cpu_to_be64(status->replay_ctr); 2339 2340 IWL_DEBUG_WOWLAN(mvm, "num of GTK rekeying %d\n", 2341 status->num_of_gtk_rekeys); 2342 2343 if (!iwl_mvm_gtk_rekey(status, vif, mvm, gtkdata.gtk_cipher)) 2344 return false; 2345 2346 if (!iwl_mvm_d3_igtk_bigtk_rekey_add(status, vif, 2347 gtkdata.igtk_cipher, 2348 &status->igtk)) 2349 return false; 2350 2351 for (i = 0; i < ARRAY_SIZE(status->bigtk); i++) { 2352 if (!iwl_mvm_d3_igtk_bigtk_rekey_add(status, vif, 2353 gtkdata.bigtk_cipher, 2354 &status->bigtk[i])) 2355 return false; 2356 } 2357 2358 if (!iwl_mvm_mlo_gtk_rekey(status, vif, mvm)) 2359 return false; 2360 2361 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid, 2362 (void *)&replay_ctr, GFP_KERNEL); 2363 } 2364 2365 out: 2366 if (iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP, 2367 WOWLAN_GET_STATUSES, 2368 IWL_FW_CMD_VER_UNKNOWN) < 10) { 2369 mvmvif->seqno_valid = true; 2370 /* +0x10 because the set API expects next-to-use, not last-used */ 2371 mvmvif->seqno = status->non_qos_seq_ctr + 0x10; 2372 } 2373 2374 if (status->wakeup_reasons & disconnection_reasons) 2375 return false; 2376 2377 return true; 2378 } 2379 2380 static void iwl_mvm_convert_gtk_v2(struct iwl_wowlan_status_data *status, 2381 struct iwl_wowlan_gtk_status_v2 *data) 2382 { 2383 BUILD_BUG_ON(sizeof(status->gtk[0].key) < sizeof(data->key)); 2384 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY + 2385 sizeof(data->tkip_mic_key) > 2386 sizeof(status->gtk[0].key)); 2387 2388 status->gtk[0].len = data->key_len; 2389 status->gtk[0].flags = data->key_flags; 2390 2391 memcpy(status->gtk[0].key, data->key, sizeof(data->key)); 2392 2393 /* if it's as long as the TKIP encryption key, copy MIC key */ 2394 if (status->gtk[0].len == NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY) 2395 memcpy(status->gtk[0].key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 2396 data->tkip_mic_key, sizeof(data->tkip_mic_key)); 2397 } 2398 2399 static void iwl_mvm_convert_gtk_v3(struct iwl_wowlan_status_data *status, 2400 struct iwl_wowlan_gtk_status_v3 *data) 2401 { 2402 int data_idx, status_idx = 0; 2403 2404 BUILD_BUG_ON(sizeof(status->gtk[0].key) < sizeof(data[0].key)); 2405 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY + 2406 sizeof(data[0].tkip_mic_key) > 2407 sizeof(status->gtk[0].key)); 2408 BUILD_BUG_ON(ARRAY_SIZE(status->gtk) < WOWLAN_GTK_KEYS_NUM); 2409 for (data_idx = 0; data_idx < ARRAY_SIZE(status->gtk); data_idx++) { 2410 if (!(data[data_idx].key_len)) 2411 continue; 2412 status->gtk[status_idx].len = data[data_idx].key_len; 2413 status->gtk[status_idx].flags = data[data_idx].key_flags; 2414 status->gtk[status_idx].id = status->gtk[status_idx].flags & 2415 IWL_WOWLAN_GTK_IDX_MASK; 2416 2417 memcpy(status->gtk[status_idx].key, data[data_idx].key, 2418 sizeof(data[data_idx].key)); 2419 2420 /* if it's as long as the TKIP encryption key, copy MIC key */ 2421 if (status->gtk[status_idx].len == 2422 NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY) 2423 memcpy(status->gtk[status_idx].key + 2424 NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 2425 data[data_idx].tkip_mic_key, 2426 sizeof(data[data_idx].tkip_mic_key)); 2427 status_idx++; 2428 } 2429 } 2430 2431 static void iwl_mvm_convert_igtk(struct iwl_wowlan_status_data *status, 2432 struct iwl_wowlan_igtk_status *data) 2433 { 2434 int i; 2435 2436 BUILD_BUG_ON(sizeof(status->igtk.key) < sizeof(data->key)); 2437 BUILD_BUG_ON(sizeof(status->igtk.ipn) != sizeof(data->ipn)); 2438 2439 if (!data->key_len) 2440 return; 2441 2442 status->igtk.len = data->key_len; 2443 status->igtk.flags = data->key_flags; 2444 status->igtk.id = u32_get_bits(data->key_flags, 2445 IWL_WOWLAN_IGTK_BIGTK_IDX_MASK) 2446 + WOWLAN_IGTK_MIN_INDEX; 2447 2448 memcpy(status->igtk.key, data->key, sizeof(data->key)); 2449 2450 /* mac80211 expects big endian for memcmp() to work, convert */ 2451 for (i = 0; i < sizeof(data->ipn); i++) 2452 status->igtk.ipn[i] = data->ipn[sizeof(data->ipn) - i - 1]; 2453 } 2454 2455 static void iwl_mvm_convert_bigtk(struct iwl_wowlan_status_data *status, 2456 const struct iwl_wowlan_igtk_status *data) 2457 { 2458 int data_idx, status_idx = 0; 2459 2460 BUILD_BUG_ON(ARRAY_SIZE(status->bigtk) < WOWLAN_BIGTK_KEYS_NUM); 2461 2462 for (data_idx = 0; data_idx < WOWLAN_BIGTK_KEYS_NUM; data_idx++) { 2463 if (!data[data_idx].key_len) 2464 continue; 2465 2466 status->bigtk[status_idx].len = data[data_idx].key_len; 2467 status->bigtk[status_idx].flags = data[data_idx].key_flags; 2468 status->bigtk[status_idx].id = 2469 u32_get_bits(data[data_idx].key_flags, 2470 IWL_WOWLAN_IGTK_BIGTK_IDX_MASK) 2471 + WOWLAN_BIGTK_MIN_INDEX; 2472 2473 BUILD_BUG_ON(sizeof(status->bigtk[status_idx].key) < 2474 sizeof(data[data_idx].key)); 2475 BUILD_BUG_ON(sizeof(status->bigtk[status_idx].ipn) < 2476 sizeof(data[data_idx].ipn)); 2477 2478 memcpy(status->bigtk[status_idx].key, data[data_idx].key, 2479 sizeof(data[data_idx].key)); 2480 memcpy(status->bigtk[status_idx].ipn, data[data_idx].ipn, 2481 sizeof(data[data_idx].ipn)); 2482 status_idx++; 2483 } 2484 } 2485 2486 static void iwl_mvm_parse_wowlan_info_notif(struct iwl_mvm *mvm, 2487 struct iwl_wowlan_info_notif *data, 2488 struct iwl_wowlan_status_data *status, 2489 u32 len) 2490 { 2491 u32 expected_len = sizeof(*data) + 2492 data->num_mlo_link_keys * sizeof(status->mlo_keys[0]); 2493 2494 if (len < expected_len) { 2495 IWL_ERR(mvm, "Invalid WoWLAN info notification!\n"); 2496 status = NULL; 2497 return; 2498 } 2499 2500 if (mvm->fast_resume) 2501 return; 2502 2503 iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc); 2504 iwl_mvm_convert_gtk_v3(status, data->gtk); 2505 iwl_mvm_convert_igtk(status, &data->igtk[0]); 2506 iwl_mvm_convert_bigtk(status, data->bigtk); 2507 status->replay_ctr = le64_to_cpu(data->replay_ctr); 2508 status->pattern_number = le16_to_cpu(data->pattern_number); 2509 status->tid_offloaded_tx = data->tid_offloaded_tx; 2510 if (IWL_FW_CHECK(mvm, 2511 data->tid_offloaded_tx >= 2512 ARRAY_SIZE(status->qos_seq_ctr), 2513 "tid_offloaded_tx is out of bound %d\n", 2514 data->tid_offloaded_tx)) 2515 data->tid_offloaded_tx = 0; 2516 status->qos_seq_ctr[data->tid_offloaded_tx] = 2517 le16_to_cpu(data->qos_seq_ctr); 2518 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); 2519 status->num_of_gtk_rekeys = 2520 le32_to_cpu(data->num_of_gtk_rekeys); 2521 status->received_beacons = le32_to_cpu(data->received_beacons); 2522 status->tid_tear_down = data->tid_tear_down; 2523 2524 if (data->num_mlo_link_keys) { 2525 status->num_mlo_keys = data->num_mlo_link_keys; 2526 if (IWL_FW_CHECK(mvm, 2527 status->num_mlo_keys > WOWLAN_MAX_MLO_KEYS, 2528 "Too many mlo keys: %d, max %d\n", 2529 status->num_mlo_keys, WOWLAN_MAX_MLO_KEYS)) 2530 status->num_mlo_keys = WOWLAN_MAX_MLO_KEYS; 2531 memcpy(status->mlo_keys, data->mlo_gtks, 2532 status->num_mlo_keys * sizeof(status->mlo_keys[0])); 2533 } 2534 } 2535 2536 static void 2537 iwl_mvm_parse_wowlan_info_notif_v4(struct iwl_mvm *mvm, 2538 struct iwl_wowlan_info_notif_v4 *data, 2539 struct iwl_wowlan_status_data *status, 2540 u32 len, bool has_mlo_keys) 2541 { 2542 u32 i; 2543 u32 expected_len = sizeof(*data); 2544 2545 if (has_mlo_keys) 2546 expected_len += (data->num_mlo_link_keys * 2547 sizeof(status->mlo_keys[0])); 2548 2549 if (len < expected_len) { 2550 IWL_ERR(mvm, "Invalid WoWLAN info notification!\n"); 2551 status = NULL; 2552 return; 2553 } 2554 2555 if (mvm->fast_resume) 2556 return; 2557 2558 iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc); 2559 iwl_mvm_convert_gtk_v3(status, data->gtk); 2560 iwl_mvm_convert_igtk(status, &data->igtk[0]); 2561 iwl_mvm_convert_bigtk(status, data->bigtk); 2562 status->replay_ctr = le64_to_cpu(data->replay_ctr); 2563 status->pattern_number = le16_to_cpu(data->pattern_number); 2564 for (i = 0; i < IWL_MAX_TID_COUNT; i++) 2565 status->qos_seq_ctr[i] = 2566 le16_to_cpu(data->qos_seq_ctr[i]); 2567 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); 2568 status->num_of_gtk_rekeys = 2569 le32_to_cpu(data->num_of_gtk_rekeys); 2570 status->received_beacons = le32_to_cpu(data->received_beacons); 2571 status->tid_tear_down = data->tid_tear_down; 2572 2573 if (has_mlo_keys && data->num_mlo_link_keys) { 2574 status->num_mlo_keys = data->num_mlo_link_keys; 2575 if (IWL_FW_CHECK(mvm, 2576 status->num_mlo_keys > WOWLAN_MAX_MLO_KEYS, 2577 "Too many mlo keys: %d, max %d\n", 2578 status->num_mlo_keys, WOWLAN_MAX_MLO_KEYS)) 2579 status->num_mlo_keys = WOWLAN_MAX_MLO_KEYS; 2580 memcpy(status->mlo_keys, data->mlo_gtks, 2581 status->num_mlo_keys * sizeof(status->mlo_keys[0])); 2582 } 2583 } 2584 2585 static void 2586 iwl_mvm_parse_wowlan_info_notif_v2(struct iwl_mvm *mvm, 2587 struct iwl_wowlan_info_notif_v2 *data, 2588 struct iwl_wowlan_status_data *status, 2589 u32 len) 2590 { 2591 u32 i; 2592 2593 if (len < sizeof(*data)) { 2594 IWL_ERR(mvm, "Invalid WoWLAN info notification!\n"); 2595 status = NULL; 2596 return; 2597 } 2598 2599 iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc); 2600 iwl_mvm_convert_gtk_v3(status, data->gtk); 2601 iwl_mvm_convert_igtk(status, &data->igtk[0]); 2602 status->replay_ctr = le64_to_cpu(data->replay_ctr); 2603 status->pattern_number = le16_to_cpu(data->pattern_number); 2604 for (i = 0; i < IWL_MAX_TID_COUNT; i++) 2605 status->qos_seq_ctr[i] = 2606 le16_to_cpu(data->qos_seq_ctr[i]); 2607 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); 2608 status->num_of_gtk_rekeys = 2609 le32_to_cpu(data->num_of_gtk_rekeys); 2610 status->received_beacons = le32_to_cpu(data->received_beacons); 2611 status->tid_tear_down = data->tid_tear_down; 2612 } 2613 2614 /* Occasionally, templates would be nice. This is one of those times ... */ 2615 #define iwl_mvm_parse_wowlan_status_common(_ver) \ 2616 static struct iwl_wowlan_status_data * \ 2617 iwl_mvm_parse_wowlan_status_common_ ## _ver(struct iwl_mvm *mvm, \ 2618 struct iwl_wowlan_status_ ##_ver *data,\ 2619 int len) \ 2620 { \ 2621 struct iwl_wowlan_status_data *status; \ 2622 int data_size, i; \ 2623 \ 2624 if (len < sizeof(*data)) { \ 2625 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \ 2626 return NULL; \ 2627 } \ 2628 \ 2629 data_size = ALIGN(le32_to_cpu(data->wake_packet_bufsize), 4); \ 2630 if (len != sizeof(*data) + data_size) { \ 2631 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \ 2632 return NULL; \ 2633 } \ 2634 \ 2635 status = kzalloc(sizeof(*status), GFP_KERNEL); \ 2636 if (!status) \ 2637 return NULL; \ 2638 \ 2639 /* copy all the common fields */ \ 2640 status->replay_ctr = le64_to_cpu(data->replay_ctr); \ 2641 status->pattern_number = le16_to_cpu(data->pattern_number); \ 2642 status->non_qos_seq_ctr = le16_to_cpu(data->non_qos_seq_ctr); \ 2643 for (i = 0; i < 8; i++) \ 2644 status->qos_seq_ctr[i] = \ 2645 le16_to_cpu(data->qos_seq_ctr[i]); \ 2646 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); \ 2647 status->num_of_gtk_rekeys = \ 2648 le32_to_cpu(data->num_of_gtk_rekeys); \ 2649 status->received_beacons = le32_to_cpu(data->received_beacons); \ 2650 status->wake_packet_length = \ 2651 le32_to_cpu(data->wake_packet_length); \ 2652 status->wake_packet_bufsize = \ 2653 le32_to_cpu(data->wake_packet_bufsize); \ 2654 if (status->wake_packet_bufsize) { \ 2655 status->wake_packet = \ 2656 kmemdup(data->wake_packet, \ 2657 status->wake_packet_bufsize, \ 2658 GFP_KERNEL); \ 2659 if (!status->wake_packet) { \ 2660 kfree(status); \ 2661 return NULL; \ 2662 } \ 2663 } else { \ 2664 status->wake_packet = NULL; \ 2665 } \ 2666 \ 2667 return status; \ 2668 } 2669 2670 iwl_mvm_parse_wowlan_status_common(v6) 2671 iwl_mvm_parse_wowlan_status_common(v7) 2672 iwl_mvm_parse_wowlan_status_common(v9) 2673 iwl_mvm_parse_wowlan_status_common(v12) 2674 2675 static struct iwl_wowlan_status_data * 2676 iwl_mvm_send_wowlan_get_status(struct iwl_mvm *mvm, u8 sta_id) 2677 { 2678 struct iwl_wowlan_status_data *status; 2679 struct iwl_wowlan_get_status_cmd get_status_cmd = { 2680 .sta_id = cpu_to_le32(sta_id), 2681 }; 2682 struct iwl_host_cmd cmd = { 2683 .id = WOWLAN_GET_STATUSES, 2684 .flags = CMD_WANT_SKB, 2685 .data = { &get_status_cmd, }, 2686 .len = { sizeof(get_status_cmd), }, 2687 }; 2688 int ret, len; 2689 u8 notif_ver; 2690 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id, 2691 IWL_FW_CMD_VER_UNKNOWN); 2692 2693 if (cmd_ver == IWL_FW_CMD_VER_UNKNOWN) 2694 cmd.len[0] = 0; 2695 2696 lockdep_assert_held(&mvm->mutex); 2697 2698 ret = iwl_mvm_send_cmd(mvm, &cmd); 2699 if (ret) { 2700 IWL_ERR(mvm, "failed to query wakeup status (%d)\n", ret); 2701 return ERR_PTR(ret); 2702 } 2703 2704 len = iwl_rx_packet_payload_len(cmd.resp_pkt); 2705 2706 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */ 2707 notif_ver = iwl_mvm_lookup_wowlan_status_ver(mvm); 2708 2709 if (notif_ver < 7) { 2710 struct iwl_wowlan_status_v6 *v6 = (void *)cmd.resp_pkt->data; 2711 2712 status = iwl_mvm_parse_wowlan_status_common_v6(mvm, v6, len); 2713 if (!status) 2714 goto out_free_resp; 2715 2716 BUILD_BUG_ON(sizeof(v6->gtk.decrypt_key) > 2717 sizeof(status->gtk[0].key)); 2718 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY + 2719 sizeof(v6->gtk.tkip_mic_key) > 2720 sizeof(status->gtk[0].key)); 2721 2722 /* copy GTK info to the right place */ 2723 memcpy(status->gtk[0].key, v6->gtk.decrypt_key, 2724 sizeof(v6->gtk.decrypt_key)); 2725 memcpy(status->gtk[0].key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 2726 v6->gtk.tkip_mic_key, 2727 sizeof(v6->gtk.tkip_mic_key)); 2728 2729 iwl_mvm_convert_key_counters(status, &v6->gtk.rsc.all_tsc_rsc); 2730 2731 /* hardcode the key length to 16 since v6 only supports 16 */ 2732 status->gtk[0].len = 16; 2733 2734 /* 2735 * The key index only uses 2 bits (values 0 to 3) and 2736 * we always set bit 7 which means this is the 2737 * currently used key. 2738 */ 2739 status->gtk[0].flags = v6->gtk.key_index | BIT(7); 2740 } else if (notif_ver == 7) { 2741 struct iwl_wowlan_status_v7 *v7 = (void *)cmd.resp_pkt->data; 2742 2743 status = iwl_mvm_parse_wowlan_status_common_v7(mvm, v7, len); 2744 if (!status) 2745 goto out_free_resp; 2746 2747 iwl_mvm_convert_key_counters(status, &v7->gtk[0].rsc.all_tsc_rsc); 2748 iwl_mvm_convert_gtk_v2(status, &v7->gtk[0]); 2749 iwl_mvm_convert_igtk(status, &v7->igtk[0]); 2750 } else if (notif_ver == 9 || notif_ver == 10 || notif_ver == 11) { 2751 struct iwl_wowlan_status_v9 *v9 = (void *)cmd.resp_pkt->data; 2752 2753 /* these three command versions have same layout and size, the 2754 * difference is only in a few not used (reserved) fields. 2755 */ 2756 status = iwl_mvm_parse_wowlan_status_common_v9(mvm, v9, len); 2757 if (!status) 2758 goto out_free_resp; 2759 2760 iwl_mvm_convert_key_counters(status, &v9->gtk[0].rsc.all_tsc_rsc); 2761 iwl_mvm_convert_gtk_v2(status, &v9->gtk[0]); 2762 iwl_mvm_convert_igtk(status, &v9->igtk[0]); 2763 2764 status->tid_tear_down = v9->tid_tear_down; 2765 } else if (notif_ver == 12) { 2766 struct iwl_wowlan_status_v12 *v12 = (void *)cmd.resp_pkt->data; 2767 2768 status = iwl_mvm_parse_wowlan_status_common_v12(mvm, v12, len); 2769 if (!status) 2770 goto out_free_resp; 2771 2772 iwl_mvm_convert_key_counters_v5(status, &v12->gtk[0].sc); 2773 iwl_mvm_convert_gtk_v3(status, v12->gtk); 2774 iwl_mvm_convert_igtk(status, &v12->igtk[0]); 2775 2776 status->tid_tear_down = v12->tid_tear_down; 2777 } else { 2778 IWL_ERR(mvm, 2779 "Firmware advertises unknown WoWLAN status response %d!\n", 2780 notif_ver); 2781 status = NULL; 2782 } 2783 2784 out_free_resp: 2785 iwl_free_resp(&cmd); 2786 return status; 2787 } 2788 2789 /* releases the MVM mutex */ 2790 static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm, 2791 struct ieee80211_vif *vif, 2792 struct iwl_wowlan_status_data *status) 2793 { 2794 int i; 2795 bool keep = false; 2796 struct iwl_mvm_sta *mvm_ap_sta; 2797 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2798 int link_id = vif->active_links ? __ffs(vif->active_links) : 0; 2799 struct iwl_mvm_vif_link_info *mvm_link = mvmvif->link[link_id]; 2800 int wowlan_info_ver = iwl_fw_lookup_notif_ver(mvm->fw, 2801 PROT_OFFLOAD_GROUP, 2802 WOWLAN_INFO_NOTIFICATION, 2803 IWL_FW_CMD_VER_UNKNOWN); 2804 2805 if (WARN_ON(!mvm_link)) 2806 goto out_unlock; 2807 2808 if (!status) 2809 goto out_unlock; 2810 2811 IWL_DEBUG_WOWLAN(mvm, "wakeup reason 0x%x\n", 2812 status->wakeup_reasons); 2813 2814 mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, mvm_link->ap_sta_id); 2815 if (!mvm_ap_sta) 2816 goto out_unlock; 2817 2818 /* firmware stores last-used value, we store next value */ 2819 if (wowlan_info_ver >= 5) { 2820 mvm_ap_sta->tid_data[status->tid_offloaded_tx].seq_number = 2821 status->qos_seq_ctr[status->tid_offloaded_tx] + 0x10; 2822 } else { 2823 for (i = 0; i < IWL_MAX_TID_COUNT; i++) 2824 mvm_ap_sta->tid_data[i].seq_number = 2825 status->qos_seq_ctr[i] + 0x10; 2826 } 2827 2828 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000) { 2829 i = mvm->offload_tid; 2830 iwl_trans_set_q_ptrs(mvm->trans, 2831 mvm_ap_sta->tid_data[i].txq_id, 2832 mvm_ap_sta->tid_data[i].seq_number >> 4); 2833 } 2834 2835 iwl_mvm_report_wakeup_reasons(mvm, vif, status); 2836 2837 keep = iwl_mvm_setup_connection_keep(mvm, vif, status); 2838 out_unlock: 2839 mutex_unlock(&mvm->mutex); 2840 return keep; 2841 } 2842 2843 #define ND_QUERY_BUF_LEN (sizeof(struct iwl_scan_offload_profile_match) * \ 2844 IWL_SCAN_MAX_PROFILES) 2845 2846 struct iwl_mvm_nd_results { 2847 u32 matched_profiles; 2848 u8 matches[ND_QUERY_BUF_LEN]; 2849 }; 2850 2851 static int 2852 iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm, 2853 struct iwl_mvm_nd_results *results) 2854 { 2855 struct iwl_scan_offload_match_info *query; 2856 struct iwl_host_cmd cmd = { 2857 .id = SCAN_OFFLOAD_PROFILES_QUERY_CMD, 2858 .flags = CMD_WANT_SKB, 2859 }; 2860 int ret, len; 2861 size_t query_len, matches_len; 2862 int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw); 2863 2864 ret = iwl_mvm_send_cmd(mvm, &cmd); 2865 if (ret) { 2866 IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret); 2867 return ret; 2868 } 2869 2870 if (fw_has_api(&mvm->fw->ucode_capa, 2871 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2872 query_len = sizeof(struct iwl_scan_offload_match_info); 2873 matches_len = sizeof(struct iwl_scan_offload_profile_match) * 2874 max_profiles; 2875 } else { 2876 query_len = sizeof(struct iwl_scan_offload_profiles_query_v1); 2877 matches_len = sizeof(struct iwl_scan_offload_profile_match_v1) * 2878 max_profiles; 2879 } 2880 2881 len = iwl_rx_packet_payload_len(cmd.resp_pkt); 2882 if (len < query_len) { 2883 IWL_ERR(mvm, "Invalid scan offload profiles query response!\n"); 2884 ret = -EIO; 2885 goto out_free_resp; 2886 } 2887 2888 query = (void *)cmd.resp_pkt->data; 2889 2890 results->matched_profiles = le32_to_cpu(query->matched_profiles); 2891 memcpy(results->matches, query->matches, matches_len); 2892 2893 #ifdef CONFIG_IWLWIFI_DEBUGFS 2894 mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done); 2895 #endif 2896 2897 out_free_resp: 2898 iwl_free_resp(&cmd); 2899 return ret; 2900 } 2901 2902 static int iwl_mvm_query_num_match_chans(struct iwl_mvm *mvm, 2903 struct iwl_mvm_nd_results *results, 2904 int idx) 2905 { 2906 int n_chans = 0, i; 2907 2908 if (fw_has_api(&mvm->fw->ucode_capa, 2909 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2910 struct iwl_scan_offload_profile_match *matches = 2911 (void *)results->matches; 2912 2913 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; i++) 2914 n_chans += hweight8(matches[idx].matching_channels[i]); 2915 } else { 2916 struct iwl_scan_offload_profile_match_v1 *matches = 2917 (void *)results->matches; 2918 2919 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1; i++) 2920 n_chans += hweight8(matches[idx].matching_channels[i]); 2921 } 2922 2923 return n_chans; 2924 } 2925 2926 static void iwl_mvm_query_set_freqs(struct iwl_mvm *mvm, 2927 struct iwl_mvm_nd_results *results, 2928 struct cfg80211_wowlan_nd_match *match, 2929 int idx) 2930 { 2931 int i; 2932 int n_channels = 0; 2933 2934 if (fw_has_api(&mvm->fw->ucode_capa, 2935 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2936 struct iwl_scan_offload_profile_match *matches = 2937 (void *)results->matches; 2938 2939 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; i++) 2940 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8))) 2941 match->channels[n_channels++] = 2942 mvm->nd_channels[i]->center_freq; 2943 } else { 2944 struct iwl_scan_offload_profile_match_v1 *matches = 2945 (void *)results->matches; 2946 2947 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1 * 8; i++) 2948 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8))) 2949 match->channels[n_channels++] = 2950 mvm->nd_channels[i]->center_freq; 2951 } 2952 /* We may have ended up with fewer channels than we allocated. */ 2953 match->n_channels = n_channels; 2954 } 2955 2956 /** 2957 * enum iwl_d3_notif - d3 notifications 2958 * @IWL_D3_NOTIF_WOWLAN_INFO: WOWLAN_INFO_NOTIF was received 2959 * @IWL_D3_NOTIF_WOWLAN_WAKE_PKT: WOWLAN_WAKE_PKT_NOTIF was received 2960 * @IWL_D3_NOTIF_PROT_OFFLOAD: PROT_OFFLOAD_NOTIF was received 2961 * @IWL_D3_ND_MATCH_INFO: OFFLOAD_MATCH_INFO_NOTIF was received 2962 * @IWL_D3_NOTIF_D3_END_NOTIF: D3_END_NOTIF was received 2963 */ 2964 enum iwl_d3_notif { 2965 IWL_D3_NOTIF_WOWLAN_INFO = BIT(0), 2966 IWL_D3_NOTIF_WOWLAN_WAKE_PKT = BIT(1), 2967 IWL_D3_NOTIF_PROT_OFFLOAD = BIT(2), 2968 IWL_D3_ND_MATCH_INFO = BIT(3), 2969 IWL_D3_NOTIF_D3_END_NOTIF = BIT(4) 2970 }; 2971 2972 /* manage d3 resume data */ 2973 struct iwl_d3_data { 2974 struct iwl_wowlan_status_data *status; 2975 bool test; 2976 u32 d3_end_flags; 2977 u32 notif_expected; /* bitmap - see &enum iwl_d3_notif */ 2978 u32 notif_received; /* bitmap - see &enum iwl_d3_notif */ 2979 struct iwl_mvm_nd_results *nd_results; 2980 bool nd_results_valid; 2981 }; 2982 2983 static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm, 2984 struct ieee80211_vif *vif, 2985 struct iwl_d3_data *d3_data) 2986 { 2987 struct cfg80211_wowlan_nd_info *net_detect = NULL; 2988 struct cfg80211_wowlan_wakeup wakeup = { 2989 .pattern_idx = -1, 2990 }; 2991 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; 2992 unsigned long matched_profiles; 2993 u32 reasons = 0; 2994 int i, n_matches, ret; 2995 2996 if (WARN_ON(!d3_data || !d3_data->status)) 2997 goto out; 2998 2999 reasons = d3_data->status->wakeup_reasons; 3000 3001 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 3002 wakeup.rfkill_release = true; 3003 3004 if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) 3005 goto out; 3006 3007 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3008 WOWLAN_INFO_NOTIFICATION, 0)) { 3009 IWL_INFO(mvm, "Query FW for ND results\n"); 3010 ret = iwl_mvm_netdetect_query_results(mvm, d3_data->nd_results); 3011 3012 } else { 3013 IWL_INFO(mvm, "Notification based ND results\n"); 3014 ret = d3_data->nd_results_valid ? 0 : -1; 3015 } 3016 3017 if (ret || !d3_data->nd_results->matched_profiles) { 3018 wakeup_report = NULL; 3019 goto out; 3020 } 3021 3022 matched_profiles = d3_data->nd_results->matched_profiles; 3023 if (mvm->n_nd_match_sets) { 3024 n_matches = hweight_long(matched_profiles); 3025 } else { 3026 IWL_ERR(mvm, "no net detect match information available\n"); 3027 n_matches = 0; 3028 } 3029 3030 net_detect = kzalloc(struct_size(net_detect, matches, n_matches), 3031 GFP_KERNEL); 3032 if (!net_detect || !n_matches) 3033 goto out_report_nd; 3034 net_detect->n_matches = n_matches; 3035 n_matches = 0; 3036 3037 for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) { 3038 struct cfg80211_wowlan_nd_match *match; 3039 int idx, n_channels = 0; 3040 3041 n_channels = iwl_mvm_query_num_match_chans(mvm, 3042 d3_data->nd_results, 3043 i); 3044 3045 match = kzalloc(struct_size(match, channels, n_channels), 3046 GFP_KERNEL); 3047 if (!match) 3048 goto out_report_nd; 3049 match->n_channels = n_channels; 3050 3051 net_detect->matches[n_matches++] = match; 3052 3053 /* We inverted the order of the SSIDs in the scan 3054 * request, so invert the index here. 3055 */ 3056 idx = mvm->n_nd_match_sets - i - 1; 3057 match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len; 3058 memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid, 3059 match->ssid.ssid_len); 3060 3061 if (mvm->n_nd_channels < n_channels) 3062 continue; 3063 3064 iwl_mvm_query_set_freqs(mvm, d3_data->nd_results, match, i); 3065 } 3066 /* We may have fewer matches than we allocated. */ 3067 net_detect->n_matches = n_matches; 3068 3069 out_report_nd: 3070 wakeup.net_detect = net_detect; 3071 out: 3072 iwl_mvm_free_nd(mvm); 3073 3074 mutex_unlock(&mvm->mutex); 3075 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); 3076 3077 if (net_detect) { 3078 for (i = 0; i < net_detect->n_matches; i++) 3079 kfree(net_detect->matches[i]); 3080 kfree(net_detect); 3081 } 3082 } 3083 3084 static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac, 3085 struct ieee80211_vif *vif) 3086 { 3087 /* skip the one we keep connection on */ 3088 if (data == vif) 3089 return; 3090 3091 if (vif->type == NL80211_IFTYPE_STATION) 3092 ieee80211_resume_disconnect(vif); 3093 } 3094 3095 static bool iwl_mvm_check_rt_status(struct iwl_mvm *mvm, 3096 struct ieee80211_vif *vif) 3097 { 3098 u32 err_id; 3099 3100 /* check for lmac1 error */ 3101 if (iwl_fwrt_read_err_table(mvm->trans, 3102 mvm->trans->dbg.lmac_error_event_table[0], 3103 &err_id)) { 3104 if (err_id == RF_KILL_INDICATOR_FOR_WOWLAN && vif) { 3105 struct cfg80211_wowlan_wakeup wakeup = { 3106 .rfkill_release = true, 3107 }; 3108 ieee80211_report_wowlan_wakeup(vif, &wakeup, 3109 GFP_KERNEL); 3110 } 3111 return true; 3112 } 3113 3114 /* check if we have lmac2 set and check for error */ 3115 if (iwl_fwrt_read_err_table(mvm->trans, 3116 mvm->trans->dbg.lmac_error_event_table[1], 3117 NULL)) 3118 return true; 3119 3120 /* check for umac error */ 3121 if (iwl_fwrt_read_err_table(mvm->trans, 3122 mvm->trans->dbg.umac_error_event_table, 3123 NULL)) 3124 return true; 3125 3126 return false; 3127 } 3128 3129 /* 3130 * This function assumes: 3131 * 1. The mutex is already held. 3132 * 2. The callee functions unlock the mutex. 3133 */ 3134 static bool 3135 iwl_mvm_choose_query_wakeup_reasons(struct iwl_mvm *mvm, 3136 struct ieee80211_vif *vif, 3137 struct iwl_d3_data *d3_data) 3138 { 3139 lockdep_assert_held(&mvm->mutex); 3140 3141 /* if FW uses status notification, status shouldn't be NULL here */ 3142 if (!d3_data->status) { 3143 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3144 u8 sta_id = mvm->net_detect ? IWL_INVALID_STA : 3145 mvmvif->deflink.ap_sta_id; 3146 3147 /* bug - FW with MLO has status notification */ 3148 WARN_ON(ieee80211_vif_is_mld(vif)); 3149 3150 d3_data->status = iwl_mvm_send_wowlan_get_status(mvm, sta_id); 3151 } 3152 3153 if (mvm->net_detect) { 3154 iwl_mvm_query_netdetect_reasons(mvm, vif, d3_data); 3155 } else { 3156 bool keep = iwl_mvm_query_wakeup_reasons(mvm, vif, 3157 d3_data->status); 3158 3159 #ifdef CONFIG_IWLWIFI_DEBUGFS 3160 if (keep) 3161 mvm->keep_vif = vif; 3162 #endif 3163 3164 return keep; 3165 } 3166 return false; 3167 } 3168 3169 #define IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT (IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET | \ 3170 IWL_WOWLAN_WAKEUP_BY_PATTERN | \ 3171 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN |\ 3172 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN_WILDCARD |\ 3173 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN |\ 3174 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN_WILDCARD) 3175 3176 static int iwl_mvm_wowlan_store_wake_pkt(struct iwl_mvm *mvm, 3177 struct iwl_wowlan_wake_pkt_notif *notif, 3178 struct iwl_wowlan_status_data *status, 3179 u32 len) 3180 { 3181 u32 data_size, packet_len = le32_to_cpu(notif->wake_packet_length); 3182 3183 if (len < sizeof(*notif)) { 3184 IWL_ERR(mvm, "Invalid WoWLAN wake packet notification!\n"); 3185 return -EIO; 3186 } 3187 3188 if (WARN_ON(!status)) { 3189 IWL_ERR(mvm, "Got wake packet notification but wowlan status data is NULL\n"); 3190 return -EIO; 3191 } 3192 3193 if (WARN_ON(!(status->wakeup_reasons & 3194 IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT))) { 3195 IWL_ERR(mvm, "Got wakeup packet but wakeup reason is %x\n", 3196 status->wakeup_reasons); 3197 return -EIO; 3198 } 3199 3200 data_size = len - offsetof(struct iwl_wowlan_wake_pkt_notif, wake_packet); 3201 3202 /* data_size got the padding from the notification, remove it. */ 3203 if (packet_len < data_size) 3204 data_size = packet_len; 3205 3206 status->wake_packet = kmemdup(notif->wake_packet, data_size, 3207 GFP_ATOMIC); 3208 3209 if (!status->wake_packet) 3210 return -ENOMEM; 3211 3212 status->wake_packet_length = packet_len; 3213 status->wake_packet_bufsize = data_size; 3214 3215 return 0; 3216 } 3217 3218 static void iwl_mvm_nd_match_info_handler(struct iwl_mvm *mvm, 3219 struct iwl_d3_data *d3_data, 3220 struct iwl_scan_offload_match_info *notif, 3221 u32 len) 3222 { 3223 struct iwl_wowlan_status_data *status = d3_data->status; 3224 struct ieee80211_vif *vif = iwl_mvm_get_bss_vif(mvm); 3225 struct iwl_mvm_nd_results *results = d3_data->nd_results; 3226 size_t i, matches_len = sizeof(struct iwl_scan_offload_profile_match) * 3227 iwl_umac_scan_get_max_profiles(mvm->fw); 3228 3229 if (IS_ERR_OR_NULL(vif)) 3230 return; 3231 3232 if (len < sizeof(struct iwl_scan_offload_match_info)) { 3233 IWL_ERR(mvm, "Invalid scan match info notification\n"); 3234 return; 3235 } 3236 3237 if (!mvm->net_detect) { 3238 IWL_ERR(mvm, "Unexpected scan match info notification\n"); 3239 return; 3240 } 3241 3242 if (!status || status->wakeup_reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) { 3243 IWL_ERR(mvm, 3244 "Ignore scan match info notification: no reason\n"); 3245 return; 3246 } 3247 3248 #ifdef CONFIG_IWLWIFI_DEBUGFS 3249 mvm->last_netdetect_scans = le32_to_cpu(notif->n_scans_done); 3250 #endif 3251 3252 results->matched_profiles = le32_to_cpu(notif->matched_profiles); 3253 IWL_INFO(mvm, "number of matched profiles=%u\n", 3254 results->matched_profiles); 3255 3256 if (results->matched_profiles) { 3257 memcpy(results->matches, notif->matches, matches_len); 3258 d3_data->nd_results_valid = true; 3259 } 3260 3261 /* no scan should be active at this point */ 3262 mvm->scan_status = 0; 3263 for (i = 0; i < mvm->max_scans; i++) 3264 mvm->scan_uid_status[i] = 0; 3265 } 3266 3267 static bool iwl_mvm_wait_d3_notif(struct iwl_notif_wait_data *notif_wait, 3268 struct iwl_rx_packet *pkt, void *data) 3269 { 3270 struct iwl_mvm *mvm = 3271 container_of(notif_wait, struct iwl_mvm, notif_wait); 3272 struct iwl_d3_data *d3_data = data; 3273 u32 len = iwl_rx_packet_payload_len(pkt); 3274 int ret; 3275 int wowlan_info_ver = iwl_fw_lookup_notif_ver(mvm->fw, 3276 PROT_OFFLOAD_GROUP, 3277 WOWLAN_INFO_NOTIFICATION, 3278 IWL_FW_CMD_VER_UNKNOWN); 3279 3280 3281 switch (WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) { 3282 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION): { 3283 3284 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_INFO) { 3285 /* We might get two notifications due to dual bss */ 3286 IWL_DEBUG_WOWLAN(mvm, 3287 "Got additional wowlan info notification\n"); 3288 break; 3289 } 3290 3291 if (wowlan_info_ver < 2) { 3292 struct iwl_wowlan_info_notif_v1 *notif_v1 = 3293 (void *)pkt->data; 3294 struct iwl_wowlan_info_notif_v2 *notif_v2; 3295 3296 notif_v2 = kmemdup(notif_v1, sizeof(*notif_v2), GFP_ATOMIC); 3297 3298 if (!notif_v2) 3299 return false; 3300 3301 notif_v2->tid_tear_down = notif_v1->tid_tear_down; 3302 notif_v2->station_id = notif_v1->station_id; 3303 memset_after(notif_v2, 0, station_id); 3304 iwl_mvm_parse_wowlan_info_notif_v2(mvm, notif_v2, 3305 d3_data->status, 3306 len); 3307 kfree(notif_v2); 3308 3309 } else if (wowlan_info_ver == 2) { 3310 struct iwl_wowlan_info_notif_v2 *notif_v2 = 3311 (void *)pkt->data; 3312 3313 iwl_mvm_parse_wowlan_info_notif_v2(mvm, notif_v2, 3314 d3_data->status, 3315 len); 3316 } else if (wowlan_info_ver < 5) { 3317 struct iwl_wowlan_info_notif_v4 *notif = 3318 (void *)pkt->data; 3319 3320 iwl_mvm_parse_wowlan_info_notif_v4(mvm, notif, 3321 d3_data->status, len, 3322 wowlan_info_ver > 3); 3323 } else { 3324 struct iwl_wowlan_info_notif *notif = 3325 (void *)pkt->data; 3326 3327 iwl_mvm_parse_wowlan_info_notif(mvm, notif, 3328 d3_data->status, len); 3329 } 3330 3331 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_INFO; 3332 3333 if (d3_data->status && 3334 d3_data->status->wakeup_reasons & IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT) 3335 /* We are supposed to get also wake packet notif */ 3336 d3_data->notif_expected |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT; 3337 3338 break; 3339 } 3340 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION): { 3341 struct iwl_wowlan_wake_pkt_notif *notif = (void *)pkt->data; 3342 3343 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_WAKE_PKT) { 3344 /* We shouldn't get two wake packet notifications */ 3345 IWL_ERR(mvm, 3346 "Got additional wowlan wake packet notification\n"); 3347 } else { 3348 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT; 3349 len = iwl_rx_packet_payload_len(pkt); 3350 ret = iwl_mvm_wowlan_store_wake_pkt(mvm, notif, 3351 d3_data->status, 3352 len); 3353 if (ret) 3354 IWL_ERR(mvm, 3355 "Can't parse WOWLAN_WAKE_PKT_NOTIFICATION\n"); 3356 } 3357 3358 break; 3359 } 3360 case WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF): { 3361 struct iwl_scan_offload_match_info *notif = (void *)pkt->data; 3362 3363 if (d3_data->notif_received & IWL_D3_ND_MATCH_INFO) { 3364 IWL_ERR(mvm, 3365 "Got additional netdetect match info\n"); 3366 break; 3367 } 3368 3369 d3_data->notif_received |= IWL_D3_ND_MATCH_INFO; 3370 3371 /* explicitly set this in the 'expected' as well */ 3372 d3_data->notif_expected |= IWL_D3_ND_MATCH_INFO; 3373 3374 len = iwl_rx_packet_payload_len(pkt); 3375 iwl_mvm_nd_match_info_handler(mvm, d3_data, notif, len); 3376 break; 3377 } 3378 case WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION): { 3379 struct iwl_mvm_d3_end_notif *notif = (void *)pkt->data; 3380 3381 d3_data->d3_end_flags = __le32_to_cpu(notif->flags); 3382 d3_data->notif_received |= IWL_D3_NOTIF_D3_END_NOTIF; 3383 3384 break; 3385 } 3386 default: 3387 WARN_ON(1); 3388 } 3389 3390 return d3_data->notif_received == d3_data->notif_expected; 3391 } 3392 3393 static int iwl_mvm_resume_firmware(struct iwl_mvm *mvm, bool test) 3394 { 3395 int ret; 3396 enum iwl_d3_status d3_status; 3397 struct iwl_host_cmd cmd = { 3398 .id = D0I3_END_CMD, 3399 .flags = CMD_WANT_SKB | CMD_SEND_IN_D3, 3400 }; 3401 bool reset = fw_has_capa(&mvm->fw->ucode_capa, 3402 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 3403 3404 ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, !reset); 3405 if (ret) 3406 return ret; 3407 3408 if (d3_status != IWL_D3_STATUS_ALIVE) { 3409 IWL_INFO(mvm, "Device was reset during suspend\n"); 3410 return -ENOENT; 3411 } 3412 3413 /* 3414 * We should trigger resume flow using command only for 22000 family 3415 * AX210 and above don't need the command since they have 3416 * the doorbell interrupt. 3417 */ 3418 if (mvm->trans->trans_cfg->device_family <= IWL_DEVICE_FAMILY_22000 && 3419 fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_D0I3_END_FIRST)) { 3420 ret = iwl_mvm_send_cmd(mvm, &cmd); 3421 if (ret < 0) 3422 IWL_ERR(mvm, "Failed to send D0I3_END_CMD first (%d)\n", 3423 ret); 3424 } 3425 3426 return ret; 3427 } 3428 3429 #define IWL_MVM_D3_NOTIF_TIMEOUT (HZ / 3) 3430 3431 static int iwl_mvm_d3_notif_wait(struct iwl_mvm *mvm, 3432 struct iwl_d3_data *d3_data) 3433 { 3434 static const u16 d3_resume_notif[] = { 3435 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION), 3436 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION), 3437 WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF), 3438 WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION) 3439 }; 3440 static const u16 d3_fast_resume_notif[] = { 3441 WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION) 3442 }; 3443 struct iwl_notification_wait wait_d3_notif; 3444 int ret; 3445 3446 if (mvm->fast_resume) 3447 iwl_init_notification_wait(&mvm->notif_wait, &wait_d3_notif, 3448 d3_fast_resume_notif, 3449 ARRAY_SIZE(d3_fast_resume_notif), 3450 iwl_mvm_wait_d3_notif, d3_data); 3451 else 3452 iwl_init_notification_wait(&mvm->notif_wait, &wait_d3_notif, 3453 d3_resume_notif, 3454 ARRAY_SIZE(d3_resume_notif), 3455 iwl_mvm_wait_d3_notif, d3_data); 3456 3457 ret = iwl_mvm_resume_firmware(mvm, d3_data->test); 3458 if (ret) { 3459 iwl_remove_notification(&mvm->notif_wait, &wait_d3_notif); 3460 return ret; 3461 } 3462 3463 return iwl_wait_notification(&mvm->notif_wait, &wait_d3_notif, 3464 IWL_MVM_D3_NOTIF_TIMEOUT); 3465 } 3466 3467 static inline bool iwl_mvm_d3_resume_notif_based(struct iwl_mvm *mvm) 3468 { 3469 return iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3470 WOWLAN_INFO_NOTIFICATION, 0) && 3471 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3472 WOWLAN_WAKE_PKT_NOTIFICATION, 0) && 3473 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3474 D3_END_NOTIFICATION, 0); 3475 } 3476 3477 static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test) 3478 { 3479 struct ieee80211_vif *vif = NULL; 3480 int ret = 1; 3481 struct iwl_mvm_nd_results results = {}; 3482 struct iwl_d3_data d3_data = { 3483 .test = test, 3484 .notif_expected = 3485 IWL_D3_NOTIF_WOWLAN_INFO | 3486 IWL_D3_NOTIF_D3_END_NOTIF, 3487 .nd_results_valid = false, 3488 .nd_results = &results, 3489 }; 3490 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 3491 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 3492 bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa, 3493 IWL_UCODE_TLV_CAPA_D0I3_END_FIRST); 3494 bool resume_notif_based = iwl_mvm_d3_resume_notif_based(mvm); 3495 bool keep = false; 3496 3497 mutex_lock(&mvm->mutex); 3498 3499 /* Apparently, the device went away and device_powered_off() was called, 3500 * don't even try to read the rt_status, the device is currently 3501 * inaccessible. 3502 */ 3503 if (!test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) { 3504 IWL_INFO(mvm, 3505 "Can't resume, device_powered_off() was called during wowlan\n"); 3506 goto err; 3507 } 3508 3509 mvm->last_reset_or_resume_time_jiffies = jiffies; 3510 3511 /* get the BSS vif pointer again */ 3512 vif = iwl_mvm_get_bss_vif(mvm); 3513 if (IS_ERR_OR_NULL(vif)) 3514 goto err; 3515 3516 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt); 3517 3518 if (iwl_mvm_check_rt_status(mvm, vif)) { 3519 IWL_ERR(mvm, "FW Error occurred during suspend. Restarting.\n"); 3520 set_bit(STATUS_FW_ERROR, &mvm->trans->status); 3521 iwl_mvm_dump_nic_error_log(mvm); 3522 iwl_dbg_tlv_time_point(&mvm->fwrt, 3523 IWL_FW_INI_TIME_POINT_FW_ASSERT, NULL); 3524 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert, 3525 false, 0); 3526 ret = 1; 3527 goto err; 3528 } 3529 3530 if (resume_notif_based) { 3531 d3_data.status = kzalloc(sizeof(*d3_data.status), GFP_KERNEL); 3532 if (!d3_data.status) { 3533 IWL_ERR(mvm, "Failed to allocate wowlan status\n"); 3534 ret = -ENOMEM; 3535 goto err; 3536 } 3537 3538 ret = iwl_mvm_d3_notif_wait(mvm, &d3_data); 3539 if (ret) 3540 goto err; 3541 } else { 3542 ret = iwl_mvm_resume_firmware(mvm, test); 3543 if (ret < 0) 3544 goto err; 3545 } 3546 3547 iwl_mvm_unblock_esr(mvm, vif, IWL_MVM_ESR_BLOCKED_WOWLAN); 3548 3549 /* after the successful handshake, we're out of D3 */ 3550 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED; 3551 3552 /* when reset is required we can't send these following commands */ 3553 if (d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE) 3554 goto query_wakeup_reasons; 3555 3556 /* 3557 * Query the current location and source from the D3 firmware so we 3558 * can play it back when we re-intiailize the D0 firmware 3559 */ 3560 iwl_mvm_update_changed_regdom(mvm); 3561 3562 /* Re-configure PPAG settings */ 3563 iwl_mvm_ppag_send_cmd(mvm); 3564 3565 if (!unified_image) 3566 /* Re-configure default SAR profile */ 3567 iwl_mvm_sar_select_profile(mvm, 1, 1); 3568 3569 if (mvm->net_detect && unified_image) { 3570 /* If this is a non-unified image, we restart the FW, 3571 * so no need to stop the netdetect scan. If that 3572 * fails, continue and try to get the wake-up reasons, 3573 * but trigger a HW restart by keeping a failure code 3574 * in ret. 3575 */ 3576 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT, 3577 false); 3578 } 3579 3580 query_wakeup_reasons: 3581 keep = iwl_mvm_choose_query_wakeup_reasons(mvm, vif, &d3_data); 3582 /* has unlocked the mutex, so skip that */ 3583 goto out; 3584 3585 err: 3586 mutex_unlock(&mvm->mutex); 3587 out: 3588 if (d3_data.status) 3589 kfree(d3_data.status->wake_packet); 3590 kfree(d3_data.status); 3591 iwl_mvm_free_nd(mvm); 3592 3593 if (!d3_data.test && !mvm->net_detect) 3594 ieee80211_iterate_active_interfaces_mtx(mvm->hw, 3595 IEEE80211_IFACE_ITER_NORMAL, 3596 iwl_mvm_d3_disconnect_iter, 3597 keep ? vif : NULL); 3598 3599 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 3600 3601 /* no need to reset the device in unified images, if successful */ 3602 if (unified_image && !ret) { 3603 /* nothing else to do if we already sent D0I3_END_CMD */ 3604 if (d0i3_first) 3605 return 0; 3606 3607 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3608 D3_END_NOTIFICATION, 0)) { 3609 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL); 3610 if (!ret) 3611 return 0; 3612 } else if (!(d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)) { 3613 return 0; 3614 } 3615 } 3616 3617 /* 3618 * Reconfigure the device in one of the following cases: 3619 * 1. We are not using a unified image 3620 * 2. We are using a unified image but had an error while exiting D3 3621 */ 3622 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); 3623 3624 /* regardless of what happened, we're now out of D3 */ 3625 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED; 3626 3627 return 1; 3628 } 3629 3630 int iwl_mvm_resume(struct ieee80211_hw *hw) 3631 { 3632 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3633 int ret; 3634 3635 ret = __iwl_mvm_resume(mvm, false); 3636 3637 iwl_mvm_resume_tcm(mvm); 3638 3639 iwl_fw_runtime_resume(&mvm->fwrt); 3640 3641 return ret; 3642 } 3643 3644 void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled) 3645 { 3646 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3647 3648 device_set_wakeup_enable(mvm->trans->dev, enabled); 3649 } 3650 3651 void iwl_mvm_fast_suspend(struct iwl_mvm *mvm) 3652 { 3653 struct iwl_d3_manager_config d3_cfg_cmd_data = {}; 3654 int ret; 3655 3656 lockdep_assert_held(&mvm->mutex); 3657 3658 IWL_DEBUG_WOWLAN(mvm, "Starting fast suspend flow\n"); 3659 3660 mvm->fast_resume = true; 3661 set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 3662 3663 WARN_ON(iwl_mvm_power_update_device(mvm)); 3664 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_D3; 3665 ret = iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD, CMD_SEND_IN_D3, 3666 sizeof(d3_cfg_cmd_data), &d3_cfg_cmd_data); 3667 if (ret) 3668 IWL_ERR(mvm, 3669 "fast suspend: couldn't send D3_CONFIG_CMD %d\n", ret); 3670 3671 ret = iwl_trans_d3_suspend(mvm->trans, false, false); 3672 if (ret) 3673 IWL_ERR(mvm, "fast suspend: trans_d3_suspend failed %d\n", ret); 3674 } 3675 3676 int iwl_mvm_fast_resume(struct iwl_mvm *mvm) 3677 { 3678 struct iwl_d3_data d3_data = { 3679 .notif_expected = 3680 IWL_D3_NOTIF_D3_END_NOTIF, 3681 }; 3682 int ret; 3683 3684 lockdep_assert_held(&mvm->mutex); 3685 3686 IWL_DEBUG_WOWLAN(mvm, "Starting the fast resume flow\n"); 3687 3688 mvm->last_reset_or_resume_time_jiffies = jiffies; 3689 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt); 3690 3691 if (iwl_mvm_check_rt_status(mvm, NULL)) { 3692 IWL_ERR(mvm, "FW Error occurred during suspend. Restarting.\n"); 3693 set_bit(STATUS_FW_ERROR, &mvm->trans->status); 3694 iwl_mvm_dump_nic_error_log(mvm); 3695 iwl_dbg_tlv_time_point(&mvm->fwrt, 3696 IWL_FW_INI_TIME_POINT_FW_ASSERT, NULL); 3697 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert, 3698 false, 0); 3699 mvm->trans->state = IWL_TRANS_NO_FW; 3700 ret = -ENODEV; 3701 3702 goto out; 3703 } 3704 ret = iwl_mvm_d3_notif_wait(mvm, &d3_data); 3705 3706 if (ret) { 3707 IWL_ERR(mvm, "Couldn't get the d3 notif %d\n", ret); 3708 mvm->trans->state = IWL_TRANS_NO_FW; 3709 } 3710 3711 out: 3712 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 3713 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED; 3714 mvm->fast_resume = false; 3715 3716 return ret; 3717 } 3718 3719 #ifdef CONFIG_IWLWIFI_DEBUGFS 3720 static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file) 3721 { 3722 struct iwl_mvm *mvm = inode->i_private; 3723 int err; 3724 3725 if (mvm->d3_test_active) 3726 return -EBUSY; 3727 3728 file->private_data = inode->i_private; 3729 3730 iwl_mvm_pause_tcm(mvm, true); 3731 3732 iwl_fw_runtime_suspend(&mvm->fwrt); 3733 3734 /* start pseudo D3 */ 3735 rtnl_lock(); 3736 wiphy_lock(mvm->hw->wiphy); 3737 err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true); 3738 wiphy_unlock(mvm->hw->wiphy); 3739 rtnl_unlock(); 3740 if (err > 0) 3741 err = -EINVAL; 3742 if (err) 3743 return err; 3744 3745 mvm->d3_test_active = true; 3746 mvm->keep_vif = NULL; 3747 return 0; 3748 } 3749 3750 static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf, 3751 size_t count, loff_t *ppos) 3752 { 3753 struct iwl_mvm *mvm = file->private_data; 3754 unsigned long end = jiffies + 60 * HZ; 3755 u32 pme_asserted; 3756 3757 while (true) { 3758 /* read pme_ptr if available */ 3759 if (mvm->d3_test_pme_ptr) { 3760 pme_asserted = iwl_trans_read_mem32(mvm->trans, 3761 mvm->d3_test_pme_ptr); 3762 if (pme_asserted) 3763 break; 3764 } 3765 3766 if (msleep_interruptible(100)) 3767 break; 3768 3769 if (time_is_before_jiffies(end)) { 3770 IWL_ERR(mvm, 3771 "ending pseudo-D3 with timeout after ~60 seconds\n"); 3772 return -ETIMEDOUT; 3773 } 3774 } 3775 3776 return 0; 3777 } 3778 3779 static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac, 3780 struct ieee80211_vif *vif) 3781 { 3782 /* skip the one we keep connection on */ 3783 if (_data == vif) 3784 return; 3785 3786 if (vif->type == NL80211_IFTYPE_STATION) 3787 ieee80211_connection_loss(vif); 3788 } 3789 3790 static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file) 3791 { 3792 struct iwl_mvm *mvm = inode->i_private; 3793 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 3794 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 3795 3796 mvm->d3_test_active = false; 3797 3798 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt); 3799 3800 rtnl_lock(); 3801 wiphy_lock(mvm->hw->wiphy); 3802 __iwl_mvm_resume(mvm, true); 3803 wiphy_unlock(mvm->hw->wiphy); 3804 rtnl_unlock(); 3805 3806 iwl_mvm_resume_tcm(mvm); 3807 3808 iwl_fw_runtime_resume(&mvm->fwrt); 3809 3810 iwl_abort_notification_waits(&mvm->notif_wait); 3811 if (!unified_image) { 3812 int remaining_time = 10; 3813 3814 ieee80211_restart_hw(mvm->hw); 3815 3816 /* wait for restart and disconnect all interfaces */ 3817 while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 3818 remaining_time > 0) { 3819 remaining_time--; 3820 msleep(1000); 3821 } 3822 3823 if (remaining_time == 0) 3824 IWL_ERR(mvm, "Timed out waiting for HW restart!\n"); 3825 } 3826 3827 ieee80211_iterate_active_interfaces_atomic( 3828 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 3829 iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif); 3830 3831 return 0; 3832 } 3833 3834 const struct file_operations iwl_dbgfs_d3_test_ops = { 3835 .open = iwl_mvm_d3_test_open, 3836 .read = iwl_mvm_d3_test_read, 3837 .release = iwl_mvm_d3_test_release, 3838 }; 3839 #endif 3840