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 #if defined(__FreeBSD__) 11 #include <linux/string.h> 12 #include <linux/delay.h> 13 #endif 14 #include <net/cfg80211.h> 15 #include <net/ipv6.h> 16 #include <net/tcp.h> 17 #include <net/addrconf.h> 18 #include "iwl-modparams.h" 19 #include "fw-api.h" 20 #include "mvm.h" 21 #include "fw/img.h" 22 23 void iwl_mvm_set_rekey_data(struct ieee80211_hw *hw, 24 struct ieee80211_vif *vif, 25 struct cfg80211_gtk_rekey_data *data) 26 { 27 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 28 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 29 30 mutex_lock(&mvm->mutex); 31 32 mvmvif->rekey_data.kek_len = data->kek_len; 33 mvmvif->rekey_data.kck_len = data->kck_len; 34 memcpy(mvmvif->rekey_data.kek, data->kek, data->kek_len); 35 memcpy(mvmvif->rekey_data.kck, data->kck, data->kck_len); 36 mvmvif->rekey_data.akm = data->akm & 0xFF; 37 mvmvif->rekey_data.replay_ctr = 38 cpu_to_le64(be64_to_cpup((const __be64 *)data->replay_ctr)); 39 mvmvif->rekey_data.valid = true; 40 41 mutex_unlock(&mvm->mutex); 42 } 43 44 #if IS_ENABLED(CONFIG_IPV6) 45 void iwl_mvm_ipv6_addr_change(struct ieee80211_hw *hw, 46 struct ieee80211_vif *vif, 47 struct inet6_dev *idev) 48 { 49 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 50 struct inet6_ifaddr *ifa; 51 int idx = 0; 52 53 memset(mvmvif->tentative_addrs, 0, sizeof(mvmvif->tentative_addrs)); 54 55 read_lock_bh(&idev->lock); 56 list_for_each_entry(ifa, &idev->addr_list, if_list) { 57 mvmvif->target_ipv6_addrs[idx] = ifa->addr; 58 if (ifa->flags & IFA_F_TENTATIVE) 59 __set_bit(idx, mvmvif->tentative_addrs); 60 idx++; 61 if (idx >= IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_MAX) 62 break; 63 } 64 read_unlock_bh(&idev->lock); 65 66 mvmvif->num_target_ipv6_addrs = idx; 67 } 68 #endif 69 70 void iwl_mvm_set_default_unicast_key(struct ieee80211_hw *hw, 71 struct ieee80211_vif *vif, int idx) 72 { 73 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 74 75 mvmvif->tx_key_idx = idx; 76 } 77 78 static void iwl_mvm_convert_p1k(u16 *p1k, __le16 *out) 79 { 80 int i; 81 82 for (i = 0; i < IWL_P1K_SIZE; i++) 83 out[i] = cpu_to_le16(p1k[i]); 84 } 85 86 static const u8 *iwl_mvm_find_max_pn(struct ieee80211_key_conf *key, 87 struct iwl_mvm_key_pn *ptk_pn, 88 struct ieee80211_key_seq *seq, 89 int tid, int queues) 90 { 91 const u8 *ret = seq->ccmp.pn; 92 int i; 93 94 /* get the PN from mac80211, used on the default queue */ 95 ieee80211_get_key_rx_seq(key, tid, seq); 96 97 /* and use the internal data for the other queues */ 98 for (i = 1; i < queues; i++) { 99 const u8 *tmp = ptk_pn->q[i].pn[tid]; 100 101 if (memcmp(ret, tmp, IEEE80211_CCMP_PN_LEN) <= 0) 102 ret = tmp; 103 } 104 105 return ret; 106 } 107 108 struct wowlan_key_reprogram_data { 109 bool error; 110 int wep_key_idx; 111 }; 112 113 static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw, 114 struct ieee80211_vif *vif, 115 struct ieee80211_sta *sta, 116 struct ieee80211_key_conf *key, 117 void *_data) 118 { 119 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 120 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 121 struct wowlan_key_reprogram_data *data = _data; 122 int ret; 123 124 switch (key->cipher) { 125 case WLAN_CIPHER_SUITE_WEP40: 126 case WLAN_CIPHER_SUITE_WEP104: { /* hack it for now */ 127 struct { 128 struct iwl_mvm_wep_key_cmd wep_key_cmd; 129 struct iwl_mvm_wep_key wep_key; 130 } __packed wkc = { 131 .wep_key_cmd.mac_id_n_color = 132 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 133 mvmvif->color)), 134 .wep_key_cmd.num_keys = 1, 135 /* firmware sets STA_KEY_FLG_WEP_13BYTES */ 136 .wep_key_cmd.decryption_type = STA_KEY_FLG_WEP, 137 .wep_key.key_index = key->keyidx, 138 .wep_key.key_size = key->keylen, 139 }; 140 141 /* 142 * This will fail -- the key functions don't set support 143 * pairwise WEP keys. However, that's better than silently 144 * failing WoWLAN. Or maybe not? 145 */ 146 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) 147 break; 148 149 memcpy(&wkc.wep_key.key[3], key->key, key->keylen); 150 if (key->keyidx == mvmvif->tx_key_idx) { 151 /* TX key must be at offset 0 */ 152 wkc.wep_key.key_offset = 0; 153 } else { 154 /* others start at 1 */ 155 data->wep_key_idx++; 156 wkc.wep_key.key_offset = data->wep_key_idx; 157 } 158 159 mutex_lock(&mvm->mutex); 160 ret = iwl_mvm_send_cmd_pdu(mvm, WEP_KEY, 0, sizeof(wkc), &wkc); 161 data->error = ret != 0; 162 163 mvm->ptk_ivlen = key->iv_len; 164 mvm->ptk_icvlen = key->icv_len; 165 mvm->gtk_ivlen = key->iv_len; 166 mvm->gtk_icvlen = key->icv_len; 167 mutex_unlock(&mvm->mutex); 168 169 /* don't upload key again */ 170 return; 171 } 172 default: 173 data->error = true; 174 return; 175 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 176 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 177 return; 178 case WLAN_CIPHER_SUITE_AES_CMAC: 179 /* 180 * Ignore CMAC keys -- the WoWLAN firmware doesn't support them 181 * but we also shouldn't abort suspend due to that. It does have 182 * support for the IGTK key renewal, but doesn't really use the 183 * IGTK for anything. This means we could spuriously wake up or 184 * be deauthenticated, but that was considered acceptable. 185 */ 186 return; 187 case WLAN_CIPHER_SUITE_TKIP: 188 case WLAN_CIPHER_SUITE_CCMP: 189 case WLAN_CIPHER_SUITE_GCMP: 190 case WLAN_CIPHER_SUITE_GCMP_256: 191 break; 192 } 193 194 mutex_lock(&mvm->mutex); 195 /* 196 * The D3 firmware hardcodes the key offset 0 as the key it 197 * uses to transmit packets to the AP, i.e. the PTK. 198 */ 199 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) { 200 mvm->ptk_ivlen = key->iv_len; 201 mvm->ptk_icvlen = key->icv_len; 202 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 0); 203 } else { 204 /* 205 * firmware only supports TSC/RSC for a single key, 206 * so if there are multiple keep overwriting them 207 * with new ones -- this relies on mac80211 doing 208 * list_add_tail(). 209 */ 210 mvm->gtk_ivlen = key->iv_len; 211 mvm->gtk_icvlen = key->icv_len; 212 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 1); 213 } 214 mutex_unlock(&mvm->mutex); 215 data->error = ret != 0; 216 } 217 218 struct wowlan_key_rsc_tsc_data { 219 struct iwl_wowlan_rsc_tsc_params_cmd_v4 *rsc_tsc; 220 bool have_rsc_tsc; 221 }; 222 223 static void iwl_mvm_wowlan_get_rsc_tsc_data(struct ieee80211_hw *hw, 224 struct ieee80211_vif *vif, 225 struct ieee80211_sta *sta, 226 struct ieee80211_key_conf *key, 227 void *_data) 228 { 229 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 230 struct wowlan_key_rsc_tsc_data *data = _data; 231 struct aes_sc *aes_sc; 232 struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL; 233 struct ieee80211_key_seq seq; 234 int i; 235 236 switch (key->cipher) { 237 default: 238 break; 239 case WLAN_CIPHER_SUITE_TKIP: 240 if (sta) { 241 u64 pn64; 242 243 tkip_sc = 244 data->rsc_tsc->params.all_tsc_rsc.tkip.unicast_rsc; 245 tkip_tx_sc = 246 &data->rsc_tsc->params.all_tsc_rsc.tkip.tsc; 247 248 pn64 = atomic64_read(&key->tx_pn); 249 tkip_tx_sc->iv16 = cpu_to_le16(TKIP_PN_TO_IV16(pn64)); 250 tkip_tx_sc->iv32 = cpu_to_le32(TKIP_PN_TO_IV32(pn64)); 251 } else { 252 tkip_sc = 253 data->rsc_tsc->params.all_tsc_rsc.tkip.multicast_rsc; 254 } 255 256 /* 257 * For non-QoS this relies on the fact that both the uCode and 258 * mac80211 use TID 0 (as they need to to avoid replay attacks) 259 * for checking the IV in the frames. 260 */ 261 for (i = 0; i < IWL_NUM_RSC; i++) { 262 ieee80211_get_key_rx_seq(key, i, &seq); 263 tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16); 264 tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32); 265 } 266 267 data->have_rsc_tsc = true; 268 break; 269 case WLAN_CIPHER_SUITE_CCMP: 270 case WLAN_CIPHER_SUITE_GCMP: 271 case WLAN_CIPHER_SUITE_GCMP_256: 272 if (sta) { 273 struct aes_sc *aes_tx_sc; 274 u64 pn64; 275 276 aes_sc = 277 data->rsc_tsc->params.all_tsc_rsc.aes.unicast_rsc; 278 aes_tx_sc = 279 &data->rsc_tsc->params.all_tsc_rsc.aes.tsc; 280 281 pn64 = atomic64_read(&key->tx_pn); 282 aes_tx_sc->pn = cpu_to_le64(pn64); 283 } else { 284 aes_sc = 285 data->rsc_tsc->params.all_tsc_rsc.aes.multicast_rsc; 286 } 287 288 /* 289 * For non-QoS this relies on the fact that both the uCode and 290 * mac80211/our RX code use TID 0 for checking the PN. 291 */ 292 if (sta && iwl_mvm_has_new_rx_api(mvm)) { 293 struct iwl_mvm_sta *mvmsta; 294 struct iwl_mvm_key_pn *ptk_pn; 295 const u8 *pn; 296 297 mvmsta = iwl_mvm_sta_from_mac80211(sta); 298 rcu_read_lock(); 299 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]); 300 if (WARN_ON(!ptk_pn)) { 301 rcu_read_unlock(); 302 break; 303 } 304 305 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 306 pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i, 307 mvm->trans->num_rx_queues); 308 aes_sc[i].pn = cpu_to_le64((u64)pn[5] | 309 ((u64)pn[4] << 8) | 310 ((u64)pn[3] << 16) | 311 ((u64)pn[2] << 24) | 312 ((u64)pn[1] << 32) | 313 ((u64)pn[0] << 40)); 314 } 315 316 rcu_read_unlock(); 317 } else { 318 for (i = 0; i < IWL_NUM_RSC; i++) { 319 u8 *pn = seq.ccmp.pn; 320 321 ieee80211_get_key_rx_seq(key, i, &seq); 322 aes_sc[i].pn = cpu_to_le64((u64)pn[5] | 323 ((u64)pn[4] << 8) | 324 ((u64)pn[3] << 16) | 325 ((u64)pn[2] << 24) | 326 ((u64)pn[1] << 32) | 327 ((u64)pn[0] << 40)); 328 } 329 } 330 data->have_rsc_tsc = true; 331 break; 332 } 333 } 334 335 struct wowlan_key_rsc_v5_data { 336 struct iwl_wowlan_rsc_tsc_params_cmd *rsc; 337 bool have_rsc; 338 int gtks; 339 int gtk_ids[4]; 340 }; 341 342 static void iwl_mvm_wowlan_get_rsc_v5_data(struct ieee80211_hw *hw, 343 struct ieee80211_vif *vif, 344 struct ieee80211_sta *sta, 345 struct ieee80211_key_conf *key, 346 void *_data) 347 { 348 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 349 struct wowlan_key_rsc_v5_data *data = _data; 350 struct ieee80211_key_seq seq; 351 __le64 *rsc; 352 int i; 353 354 /* only for ciphers that can be PTK/GTK */ 355 switch (key->cipher) { 356 default: 357 return; 358 case WLAN_CIPHER_SUITE_TKIP: 359 case WLAN_CIPHER_SUITE_CCMP: 360 case WLAN_CIPHER_SUITE_GCMP: 361 case WLAN_CIPHER_SUITE_GCMP_256: 362 break; 363 } 364 365 if (sta) { 366 rsc = data->rsc->ucast_rsc; 367 } else { 368 if (WARN_ON(data->gtks >= ARRAY_SIZE(data->gtk_ids))) 369 return; 370 data->gtk_ids[data->gtks] = key->keyidx; 371 rsc = data->rsc->mcast_rsc[data->gtks % 2]; 372 if (WARN_ON(key->keyidx >= 373 ARRAY_SIZE(data->rsc->mcast_key_id_map))) 374 return; 375 data->rsc->mcast_key_id_map[key->keyidx] = data->gtks % 2; 376 if (data->gtks >= 2) { 377 int prev = data->gtks - 2; 378 int prev_idx = data->gtk_ids[prev]; 379 380 data->rsc->mcast_key_id_map[prev_idx] = 381 IWL_MCAST_KEY_MAP_INVALID; 382 } 383 data->gtks++; 384 } 385 386 switch (key->cipher) { 387 default: 388 WARN_ON(1); 389 break; 390 case WLAN_CIPHER_SUITE_TKIP: 391 392 /* 393 * For non-QoS this relies on the fact that both the uCode and 394 * mac80211 use TID 0 (as they need to to avoid replay attacks) 395 * for checking the IV in the frames. 396 */ 397 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 398 ieee80211_get_key_rx_seq(key, i, &seq); 399 400 rsc[i] = cpu_to_le64(((u64)seq.tkip.iv32 << 16) | 401 seq.tkip.iv16); 402 } 403 404 data->have_rsc = true; 405 break; 406 case WLAN_CIPHER_SUITE_CCMP: 407 case WLAN_CIPHER_SUITE_GCMP: 408 case WLAN_CIPHER_SUITE_GCMP_256: 409 /* 410 * For non-QoS this relies on the fact that both the uCode and 411 * mac80211/our RX code use TID 0 for checking the PN. 412 */ 413 if (sta) { 414 struct iwl_mvm_sta *mvmsta; 415 struct iwl_mvm_key_pn *ptk_pn; 416 const u8 *pn; 417 418 mvmsta = iwl_mvm_sta_from_mac80211(sta); 419 rcu_read_lock(); 420 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]); 421 if (WARN_ON(!ptk_pn)) { 422 rcu_read_unlock(); 423 break; 424 } 425 426 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 427 pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i, 428 mvm->trans->num_rx_queues); 429 rsc[i] = cpu_to_le64((u64)pn[5] | 430 ((u64)pn[4] << 8) | 431 ((u64)pn[3] << 16) | 432 ((u64)pn[2] << 24) | 433 ((u64)pn[1] << 32) | 434 ((u64)pn[0] << 40)); 435 } 436 437 rcu_read_unlock(); 438 } else { 439 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 440 u8 *pn = seq.ccmp.pn; 441 442 ieee80211_get_key_rx_seq(key, i, &seq); 443 rsc[i] = cpu_to_le64((u64)pn[5] | 444 ((u64)pn[4] << 8) | 445 ((u64)pn[3] << 16) | 446 ((u64)pn[2] << 24) | 447 ((u64)pn[1] << 32) | 448 ((u64)pn[0] << 40)); 449 } 450 } 451 data->have_rsc = true; 452 break; 453 } 454 } 455 456 static int iwl_mvm_wowlan_config_rsc_tsc(struct iwl_mvm *mvm, 457 struct ieee80211_vif *vif, 458 struct iwl_mvm_vif_link_info *mvm_link) 459 { 460 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TSC_RSC_PARAM, 461 IWL_FW_CMD_VER_UNKNOWN); 462 int ret; 463 464 if (ver == 5) { 465 struct wowlan_key_rsc_v5_data data = {}; 466 int i; 467 468 data.rsc = kzalloc(sizeof(*data.rsc), GFP_KERNEL); 469 if (!data.rsc) 470 return -ENOMEM; 471 472 for (i = 0; i < ARRAY_SIZE(data.rsc->mcast_key_id_map); i++) 473 data.rsc->mcast_key_id_map[i] = 474 IWL_MCAST_KEY_MAP_INVALID; 475 data.rsc->sta_id = cpu_to_le32(mvm_link->ap_sta_id); 476 477 ieee80211_iter_keys(mvm->hw, vif, 478 iwl_mvm_wowlan_get_rsc_v5_data, 479 &data); 480 481 if (data.have_rsc) 482 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM, 483 CMD_ASYNC, sizeof(*data.rsc), 484 data.rsc); 485 else 486 ret = 0; 487 kfree(data.rsc); 488 } else if (ver == 4 || ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN) { 489 struct wowlan_key_rsc_tsc_data data = {}; 490 int size; 491 492 data.rsc_tsc = kzalloc(sizeof(*data.rsc_tsc), GFP_KERNEL); 493 if (!data.rsc_tsc) 494 return -ENOMEM; 495 496 if (ver == 4) { 497 size = sizeof(*data.rsc_tsc); 498 data.rsc_tsc->sta_id = 499 cpu_to_le32(mvm_link->ap_sta_id); 500 } else { 501 /* ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN */ 502 size = sizeof(data.rsc_tsc->params); 503 } 504 505 ieee80211_iter_keys(mvm->hw, vif, 506 iwl_mvm_wowlan_get_rsc_tsc_data, 507 &data); 508 509 if (data.have_rsc_tsc) 510 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM, 511 CMD_ASYNC, size, 512 data.rsc_tsc); 513 else 514 ret = 0; 515 kfree(data.rsc_tsc); 516 } else { 517 ret = 0; 518 WARN_ON_ONCE(1); 519 } 520 521 return ret; 522 } 523 524 struct wowlan_key_tkip_data { 525 struct iwl_wowlan_tkip_params_cmd tkip; 526 bool have_tkip_keys; 527 }; 528 529 static void iwl_mvm_wowlan_get_tkip_data(struct ieee80211_hw *hw, 530 struct ieee80211_vif *vif, 531 struct ieee80211_sta *sta, 532 struct ieee80211_key_conf *key, 533 void *_data) 534 { 535 struct wowlan_key_tkip_data *data = _data; 536 struct iwl_p1k_cache *rx_p1ks; 537 u8 *rx_mic_key; 538 struct ieee80211_key_seq seq; 539 u32 cur_rx_iv32 = 0; 540 u16 p1k[IWL_P1K_SIZE]; 541 int i; 542 543 switch (key->cipher) { 544 default: 545 break; 546 case WLAN_CIPHER_SUITE_TKIP: 547 if (sta) { 548 u64 pn64; 549 550 rx_p1ks = data->tkip.rx_uni; 551 552 pn64 = atomic64_read(&key->tx_pn); 553 554 ieee80211_get_tkip_p1k_iv(key, TKIP_PN_TO_IV32(pn64), 555 p1k); 556 iwl_mvm_convert_p1k(p1k, data->tkip.tx.p1k); 557 558 memcpy(data->tkip.mic_keys.tx, 559 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], 560 IWL_MIC_KEY_SIZE); 561 562 rx_mic_key = data->tkip.mic_keys.rx_unicast; 563 } else { 564 rx_p1ks = data->tkip.rx_multi; 565 rx_mic_key = data->tkip.mic_keys.rx_mcast; 566 } 567 568 for (i = 0; i < IWL_NUM_RSC; i++) { 569 ieee80211_get_key_rx_seq(key, i, &seq); 570 /* wrapping isn't allowed, AP must rekey */ 571 if (seq.tkip.iv32 > cur_rx_iv32) 572 cur_rx_iv32 = seq.tkip.iv32; 573 } 574 575 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid, 576 cur_rx_iv32, p1k); 577 iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k); 578 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid, 579 cur_rx_iv32 + 1, p1k); 580 iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k); 581 582 memcpy(rx_mic_key, 583 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], 584 IWL_MIC_KEY_SIZE); 585 586 data->have_tkip_keys = true; 587 break; 588 } 589 } 590 591 struct wowlan_key_gtk_type_iter { 592 struct iwl_wowlan_kek_kck_material_cmd_v4 *kek_kck_cmd; 593 }; 594 595 static void iwl_mvm_wowlan_gtk_type_iter(struct ieee80211_hw *hw, 596 struct ieee80211_vif *vif, 597 struct ieee80211_sta *sta, 598 struct ieee80211_key_conf *key, 599 void *_data) 600 { 601 struct wowlan_key_gtk_type_iter *data = _data; 602 __le32 *cipher = NULL; 603 604 if (key->keyidx == 4 || key->keyidx == 5) 605 cipher = &data->kek_kck_cmd->igtk_cipher; 606 if (key->keyidx == 6 || key->keyidx == 7) 607 cipher = &data->kek_kck_cmd->bigtk_cipher; 608 609 switch (key->cipher) { 610 default: 611 return; 612 case WLAN_CIPHER_SUITE_TKIP: 613 if (!sta) 614 data->kek_kck_cmd->gtk_cipher = 615 cpu_to_le32(STA_KEY_FLG_TKIP); 616 return; 617 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 618 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 619 if (cipher) 620 *cipher = cpu_to_le32(STA_KEY_FLG_GCMP); 621 return; 622 case WLAN_CIPHER_SUITE_AES_CMAC: 623 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 624 if (cipher) 625 *cipher = cpu_to_le32(STA_KEY_FLG_CCM); 626 return; 627 case WLAN_CIPHER_SUITE_CCMP: 628 if (!sta) 629 data->kek_kck_cmd->gtk_cipher = 630 cpu_to_le32(STA_KEY_FLG_CCM); 631 return; 632 case WLAN_CIPHER_SUITE_GCMP: 633 case WLAN_CIPHER_SUITE_GCMP_256: 634 if (!sta) 635 data->kek_kck_cmd->gtk_cipher = 636 cpu_to_le32(STA_KEY_FLG_GCMP); 637 return; 638 } 639 } 640 641 static int iwl_mvm_send_patterns_v1(struct iwl_mvm *mvm, 642 struct cfg80211_wowlan *wowlan) 643 { 644 struct iwl_wowlan_patterns_cmd_v1 *pattern_cmd; 645 struct iwl_host_cmd cmd = { 646 .id = WOWLAN_PATTERNS, 647 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 648 }; 649 int i, err; 650 651 if (!wowlan->n_patterns) 652 return 0; 653 654 cmd.len[0] = struct_size(pattern_cmd, patterns, wowlan->n_patterns); 655 656 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL); 657 if (!pattern_cmd) 658 return -ENOMEM; 659 660 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns); 661 662 for (i = 0; i < wowlan->n_patterns; i++) { 663 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8); 664 665 memcpy(&pattern_cmd->patterns[i].mask, 666 wowlan->patterns[i].mask, mask_len); 667 memcpy(&pattern_cmd->patterns[i].pattern, 668 wowlan->patterns[i].pattern, 669 wowlan->patterns[i].pattern_len); 670 pattern_cmd->patterns[i].mask_size = mask_len; 671 pattern_cmd->patterns[i].pattern_size = 672 wowlan->patterns[i].pattern_len; 673 } 674 675 cmd.data[0] = pattern_cmd; 676 err = iwl_mvm_send_cmd(mvm, &cmd); 677 kfree(pattern_cmd); 678 return err; 679 } 680 681 static int iwl_mvm_send_patterns(struct iwl_mvm *mvm, 682 struct iwl_mvm_vif_link_info *mvm_link, 683 struct cfg80211_wowlan *wowlan) 684 { 685 struct iwl_wowlan_patterns_cmd *pattern_cmd; 686 struct iwl_host_cmd cmd = { 687 .id = WOWLAN_PATTERNS, 688 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 689 }; 690 int i, err; 691 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id, 692 IWL_FW_CMD_VER_UNKNOWN); 693 694 if (!wowlan->n_patterns) 695 return 0; 696 697 cmd.len[0] = sizeof(*pattern_cmd) + 698 wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern_v2); 699 700 pattern_cmd = kzalloc(cmd.len[0], GFP_KERNEL); 701 if (!pattern_cmd) 702 return -ENOMEM; 703 704 pattern_cmd->n_patterns = wowlan->n_patterns; 705 if (ver >= 3) 706 pattern_cmd->sta_id = mvm_link->ap_sta_id; 707 708 for (i = 0; i < wowlan->n_patterns; i++) { 709 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8); 710 711 pattern_cmd->patterns[i].pattern_type = 712 WOWLAN_PATTERN_TYPE_BITMASK; 713 714 memcpy(&pattern_cmd->patterns[i].u.bitmask.mask, 715 wowlan->patterns[i].mask, mask_len); 716 memcpy(&pattern_cmd->patterns[i].u.bitmask.pattern, 717 wowlan->patterns[i].pattern, 718 wowlan->patterns[i].pattern_len); 719 pattern_cmd->patterns[i].u.bitmask.mask_size = mask_len; 720 pattern_cmd->patterns[i].u.bitmask.pattern_size = 721 wowlan->patterns[i].pattern_len; 722 } 723 724 cmd.data[0] = pattern_cmd; 725 err = iwl_mvm_send_cmd(mvm, &cmd); 726 kfree(pattern_cmd); 727 return err; 728 } 729 730 static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 731 struct ieee80211_sta *ap_sta) 732 { 733 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 734 struct ieee80211_chanctx_conf *ctx; 735 u8 chains_static, chains_dynamic; 736 struct cfg80211_chan_def chandef, ap_def; 737 int ret, i; 738 struct iwl_binding_cmd_v1 binding_cmd = {}; 739 struct iwl_time_quota_cmd quota_cmd = {}; 740 struct iwl_time_quota_data *quota; 741 u32 status; 742 743 if (WARN_ON_ONCE(iwl_mvm_is_cdb_supported(mvm) || 744 ieee80211_vif_is_mld(vif))) 745 return -EINVAL; 746 747 /* add back the PHY */ 748 if (WARN_ON(!mvmvif->deflink.phy_ctxt)) 749 return -EINVAL; 750 751 rcu_read_lock(); 752 ctx = rcu_dereference(vif->bss_conf.chanctx_conf); 753 if (WARN_ON(!ctx)) { 754 rcu_read_unlock(); 755 return -EINVAL; 756 } 757 chandef = ctx->def; 758 ap_def = ctx->ap; 759 chains_static = ctx->rx_chains_static; 760 chains_dynamic = ctx->rx_chains_dynamic; 761 rcu_read_unlock(); 762 763 ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->deflink.phy_ctxt, &chandef, 764 &ap_def, chains_static, chains_dynamic); 765 if (ret) 766 return ret; 767 768 /* add back the MAC */ 769 mvmvif->uploaded = false; 770 771 if (WARN_ON(!vif->cfg.assoc)) 772 return -EINVAL; 773 774 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 775 if (ret) 776 return ret; 777 778 /* add back binding - XXX refactor? */ 779 binding_cmd.id_and_color = 780 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id, 781 mvmvif->deflink.phy_ctxt->color)); 782 binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD); 783 binding_cmd.phy = 784 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id, 785 mvmvif->deflink.phy_ctxt->color)); 786 binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 787 mvmvif->color)); 788 for (i = 1; i < MAX_MACS_IN_BINDING; i++) 789 binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID); 790 791 status = 0; 792 ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD, 793 IWL_BINDING_CMD_SIZE_V1, &binding_cmd, 794 &status); 795 if (ret) { 796 IWL_ERR(mvm, "Failed to add binding: %d\n", ret); 797 return ret; 798 } 799 800 if (status) { 801 IWL_ERR(mvm, "Binding command failed: %u\n", status); 802 return -EIO; 803 } 804 805 ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false, 0); 806 if (ret) 807 return ret; 808 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->deflink.ap_sta_id], 809 ap_sta); 810 811 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 812 if (ret) 813 return ret; 814 815 /* and some quota */ 816 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, 0); 817 quota->id_and_color = 818 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id, 819 mvmvif->deflink.phy_ctxt->color)); 820 quota->quota = cpu_to_le32(IWL_MVM_MAX_QUOTA); 821 quota->max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA); 822 823 for (i = 1; i < MAX_BINDINGS; i++) { 824 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, i); 825 quota->id_and_color = cpu_to_le32(FW_CTXT_INVALID); 826 } 827 828 ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0, 829 iwl_mvm_quota_cmd_size(mvm), "a_cmd); 830 if (ret) 831 IWL_ERR(mvm, "Failed to send quota: %d\n", ret); 832 833 if (iwl_mvm_is_lar_supported(mvm) && iwl_mvm_init_fw_regd(mvm, false)) 834 IWL_ERR(mvm, "Failed to initialize D3 LAR information\n"); 835 836 return 0; 837 } 838 839 static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm, 840 struct ieee80211_vif *vif) 841 { 842 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 843 struct iwl_nonqos_seq_query_cmd query_cmd = { 844 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET), 845 .mac_id_n_color = 846 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 847 mvmvif->color)), 848 }; 849 struct iwl_host_cmd cmd = { 850 .id = NON_QOS_TX_COUNTER_CMD, 851 .flags = CMD_WANT_SKB, 852 }; 853 int err; 854 u32 size; 855 856 cmd.data[0] = &query_cmd; 857 cmd.len[0] = sizeof(query_cmd); 858 859 err = iwl_mvm_send_cmd(mvm, &cmd); 860 if (err) 861 return err; 862 863 size = iwl_rx_packet_payload_len(cmd.resp_pkt); 864 if (size < sizeof(__le16)) { 865 err = -EINVAL; 866 } else { 867 err = le16_to_cpup((__le16 *)cmd.resp_pkt->data); 868 /* firmware returns next, not last-used seqno */ 869 err = (u16) (err - 0x10); 870 } 871 872 iwl_free_resp(&cmd); 873 return err; 874 } 875 876 void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 877 { 878 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 879 struct iwl_nonqos_seq_query_cmd query_cmd = { 880 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET), 881 .mac_id_n_color = 882 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 883 mvmvif->color)), 884 .value = cpu_to_le16(mvmvif->seqno), 885 }; 886 887 /* return if called during restart, not resume from D3 */ 888 if (!mvmvif->seqno_valid) 889 return; 890 891 mvmvif->seqno_valid = false; 892 893 if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0, 894 sizeof(query_cmd), &query_cmd)) 895 IWL_ERR(mvm, "failed to set non-QoS seqno\n"); 896 } 897 898 static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm) 899 { 900 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 901 902 iwl_mvm_stop_device(mvm); 903 /* 904 * Set the HW restart bit -- this is mostly true as we're 905 * going to load new firmware and reprogram that, though 906 * the reprogramming is going to be manual to avoid adding 907 * all the MACs that aren't support. 908 * We don't have to clear up everything though because the 909 * reprogramming is manual. When we resume, we'll actually 910 * go through a proper restart sequence again to switch 911 * back to the runtime firmware image. 912 */ 913 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 914 915 /* the fw is reset, so all the keys are cleared */ 916 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); 917 918 mvm->ptk_ivlen = 0; 919 mvm->ptk_icvlen = 0; 920 mvm->ptk_ivlen = 0; 921 mvm->ptk_icvlen = 0; 922 923 return iwl_mvm_load_d3_fw(mvm); 924 } 925 926 static int 927 iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm, 928 struct cfg80211_wowlan *wowlan, 929 struct iwl_wowlan_config_cmd *wowlan_config_cmd, 930 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif, 931 struct ieee80211_sta *ap_sta) 932 { 933 struct iwl_mvm_sta *mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta); 934 935 /* TODO: wowlan_config_cmd->wowlan_ba_teardown_tids */ 936 937 wowlan_config_cmd->is_11n_connection = 938 ap_sta->deflink.ht_cap.ht_supported; 939 wowlan_config_cmd->flags = ENABLE_L3_FILTERING | 940 ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING; 941 942 if (ap_sta->mfp) 943 wowlan_config_cmd->flags |= IS_11W_ASSOC; 944 945 if (iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_CONFIGURATION, 0) < 6) { 946 /* Query the last used seqno and set it */ 947 int ret = iwl_mvm_get_last_nonqos_seq(mvm, vif); 948 949 if (ret < 0) 950 return ret; 951 952 wowlan_config_cmd->non_qos_seq = cpu_to_le16(ret); 953 } 954 955 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, wowlan_config_cmd); 956 957 if (wowlan->disconnect) 958 wowlan_config_cmd->wakeup_filter |= 959 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS | 960 IWL_WOWLAN_WAKEUP_LINK_CHANGE); 961 if (wowlan->magic_pkt) 962 wowlan_config_cmd->wakeup_filter |= 963 cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET); 964 if (wowlan->gtk_rekey_failure) 965 wowlan_config_cmd->wakeup_filter |= 966 cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL); 967 if (wowlan->eap_identity_req) 968 wowlan_config_cmd->wakeup_filter |= 969 cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ); 970 if (wowlan->four_way_handshake) 971 wowlan_config_cmd->wakeup_filter |= 972 cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE); 973 if (wowlan->n_patterns) 974 wowlan_config_cmd->wakeup_filter |= 975 cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH); 976 977 if (wowlan->rfkill_release) 978 wowlan_config_cmd->wakeup_filter |= 979 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT); 980 981 if (wowlan->tcp) { 982 /* 983 * Set the "link change" (really "link lost") flag as well 984 * since that implies losing the TCP connection. 985 */ 986 wowlan_config_cmd->wakeup_filter |= 987 cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS | 988 IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE | 989 IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET | 990 IWL_WOWLAN_WAKEUP_LINK_CHANGE); 991 } 992 993 if (wowlan->any) { 994 wowlan_config_cmd->wakeup_filter |= 995 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS | 996 IWL_WOWLAN_WAKEUP_LINK_CHANGE | 997 IWL_WOWLAN_WAKEUP_RX_FRAME | 998 IWL_WOWLAN_WAKEUP_BCN_FILTERING); 999 } 1000 1001 return 0; 1002 } 1003 1004 static int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm, 1005 struct ieee80211_vif *vif, 1006 struct iwl_mvm_vif_link_info *mvm_link) 1007 { 1008 bool unified = fw_has_capa(&mvm->fw->ucode_capa, 1009 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1010 struct wowlan_key_reprogram_data key_data = {}; 1011 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1012 int ret; 1013 u8 cmd_ver; 1014 size_t cmd_size; 1015 1016 if (!unified) { 1017 /* 1018 * if we have to configure keys, call ieee80211_iter_keys(), 1019 * as we need non-atomic context in order to take the 1020 * required locks. 1021 */ 1022 /* 1023 * Note that currently we don't use CMD_ASYNC in the iterator. 1024 * In case of key_data.configure_keys, all the configured 1025 * commands are SYNC, and iwl_mvm_wowlan_program_keys() will 1026 * take care of locking/unlocking mvm->mutex. 1027 */ 1028 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_program_keys, 1029 &key_data); 1030 1031 if (key_data.error) 1032 return -EIO; 1033 } 1034 1035 ret = iwl_mvm_wowlan_config_rsc_tsc(mvm, vif, mvm_link); 1036 if (ret) 1037 return ret; 1038 1039 if (!fw_has_api(&mvm->fw->ucode_capa, 1040 IWL_UCODE_TLV_API_TKIP_MIC_KEYS)) { 1041 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TKIP_PARAM, 1042 IWL_FW_CMD_VER_UNKNOWN); 1043 struct wowlan_key_tkip_data tkip_data = {}; 1044 int size; 1045 1046 if (ver == 2) { 1047 size = sizeof(tkip_data.tkip); 1048 tkip_data.tkip.sta_id = 1049 cpu_to_le32(mvm_link->ap_sta_id); 1050 } else if (ver == 1 || ver == IWL_FW_CMD_VER_UNKNOWN) { 1051 size = sizeof(struct iwl_wowlan_tkip_params_cmd_ver_1); 1052 } else { 1053 WARN_ON_ONCE(1); 1054 return -EINVAL; 1055 } 1056 1057 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_get_tkip_data, 1058 &tkip_data); 1059 1060 if (tkip_data.have_tkip_keys) { 1061 /* send relevant data according to CMD version */ 1062 ret = iwl_mvm_send_cmd_pdu(mvm, 1063 WOWLAN_TKIP_PARAM, 1064 CMD_ASYNC, size, 1065 &tkip_data.tkip); 1066 if (ret) 1067 return ret; 1068 } 1069 } 1070 1071 /* configure rekey data only if offloaded rekey is supported (d3) */ 1072 if (mvmvif->rekey_data.valid) { 1073 struct iwl_wowlan_kek_kck_material_cmd_v4 kek_kck_cmd = {}; 1074 struct iwl_wowlan_kek_kck_material_cmd_v4 *_kek_kck_cmd = 1075 &kek_kck_cmd; 1076 struct wowlan_key_gtk_type_iter gtk_type_data = { 1077 .kek_kck_cmd = _kek_kck_cmd, 1078 }; 1079 1080 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, 1081 WOWLAN_KEK_KCK_MATERIAL, 1082 IWL_FW_CMD_VER_UNKNOWN); 1083 if (WARN_ON(cmd_ver != 2 && cmd_ver != 3 && cmd_ver != 4 && 1084 cmd_ver != IWL_FW_CMD_VER_UNKNOWN)) 1085 return -EINVAL; 1086 1087 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_gtk_type_iter, 1088 >k_type_data); 1089 1090 memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck, 1091 mvmvif->rekey_data.kck_len); 1092 kek_kck_cmd.kck_len = cpu_to_le16(mvmvif->rekey_data.kck_len); 1093 memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek, 1094 mvmvif->rekey_data.kek_len); 1095 kek_kck_cmd.kek_len = cpu_to_le16(mvmvif->rekey_data.kek_len); 1096 kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr; 1097 kek_kck_cmd.akm = cpu_to_le32(mvmvif->rekey_data.akm); 1098 kek_kck_cmd.sta_id = cpu_to_le32(mvm_link->ap_sta_id); 1099 1100 if (cmd_ver == 4) { 1101 cmd_size = sizeof(struct iwl_wowlan_kek_kck_material_cmd_v4); 1102 } else { 1103 if (cmd_ver == 3) 1104 cmd_size = 1105 sizeof(struct iwl_wowlan_kek_kck_material_cmd_v3); 1106 else 1107 cmd_size = 1108 sizeof(struct iwl_wowlan_kek_kck_material_cmd_v2); 1109 /* skip the sta_id at the beginning */ 1110 _kek_kck_cmd = (void *) 1111 ((u8 *)_kek_kck_cmd + sizeof(kek_kck_cmd.sta_id)); 1112 } 1113 1114 IWL_DEBUG_WOWLAN(mvm, "setting akm %d\n", 1115 mvmvif->rekey_data.akm); 1116 1117 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_KEK_KCK_MATERIAL, 1118 CMD_ASYNC, cmd_size, _kek_kck_cmd); 1119 if (ret) 1120 return ret; 1121 } 1122 1123 return 0; 1124 } 1125 1126 static int 1127 iwl_mvm_wowlan_config(struct iwl_mvm *mvm, 1128 struct cfg80211_wowlan *wowlan, 1129 struct iwl_wowlan_config_cmd *wowlan_config_cmd, 1130 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif, 1131 struct iwl_mvm_vif_link_info *mvm_link, 1132 struct ieee80211_sta *ap_sta) 1133 { 1134 int ret; 1135 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 1136 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1137 1138 mvm->offload_tid = wowlan_config_cmd->offloading_tid; 1139 1140 if (!unified_image) { 1141 ret = iwl_mvm_switch_to_d3(mvm); 1142 if (ret) 1143 return ret; 1144 1145 ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta); 1146 if (ret) 1147 return ret; 1148 } 1149 1150 ret = iwl_mvm_wowlan_config_key_params(mvm, vif, mvm_link); 1151 if (ret) 1152 return ret; 1153 1154 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0, 1155 sizeof(*wowlan_config_cmd), 1156 wowlan_config_cmd); 1157 if (ret) 1158 return ret; 1159 1160 if (fw_has_api(&mvm->fw->ucode_capa, 1161 IWL_UCODE_TLV_API_WOWLAN_TCP_SYN_WAKE)) 1162 ret = iwl_mvm_send_patterns(mvm, mvm_link, wowlan); 1163 else 1164 ret = iwl_mvm_send_patterns_v1(mvm, wowlan); 1165 if (ret) 1166 return ret; 1167 1168 return iwl_mvm_send_proto_offload(mvm, vif, false, true, 0, 1169 mvm_link->ap_sta_id); 1170 } 1171 1172 static int 1173 iwl_mvm_netdetect_config(struct iwl_mvm *mvm, 1174 struct cfg80211_wowlan *wowlan, 1175 struct cfg80211_sched_scan_request *nd_config, 1176 struct ieee80211_vif *vif) 1177 { 1178 int ret; 1179 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 1180 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1181 1182 if (!unified_image) { 1183 ret = iwl_mvm_switch_to_d3(mvm); 1184 if (ret) 1185 return ret; 1186 } else { 1187 /* In theory, we wouldn't have to stop a running sched 1188 * scan in order to start another one (for 1189 * net-detect). But in practice this doesn't seem to 1190 * work properly, so stop any running sched_scan now. 1191 */ 1192 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 1193 if (ret) 1194 return ret; 1195 } 1196 1197 ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies, 1198 IWL_MVM_SCAN_NETDETECT); 1199 if (ret) 1200 return ret; 1201 1202 if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels)) 1203 return -EBUSY; 1204 1205 /* save the sched scan matchsets... */ 1206 if (nd_config->n_match_sets) { 1207 mvm->nd_match_sets = kmemdup(nd_config->match_sets, 1208 sizeof(*nd_config->match_sets) * 1209 nd_config->n_match_sets, 1210 GFP_KERNEL); 1211 if (mvm->nd_match_sets) 1212 mvm->n_nd_match_sets = nd_config->n_match_sets; 1213 } 1214 1215 /* ...and the sched scan channels for later reporting */ 1216 mvm->nd_channels = kmemdup(nd_config->channels, 1217 sizeof(*nd_config->channels) * 1218 nd_config->n_channels, 1219 GFP_KERNEL); 1220 if (mvm->nd_channels) 1221 mvm->n_nd_channels = nd_config->n_channels; 1222 1223 return 0; 1224 } 1225 1226 static void iwl_mvm_free_nd(struct iwl_mvm *mvm) 1227 { 1228 kfree(mvm->nd_match_sets); 1229 mvm->nd_match_sets = NULL; 1230 mvm->n_nd_match_sets = 0; 1231 kfree(mvm->nd_channels); 1232 mvm->nd_channels = NULL; 1233 mvm->n_nd_channels = 0; 1234 } 1235 1236 static int __iwl_mvm_suspend(struct ieee80211_hw *hw, 1237 struct cfg80211_wowlan *wowlan, 1238 bool test) 1239 { 1240 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1241 struct ieee80211_vif *vif = NULL; 1242 struct iwl_mvm_vif *mvmvif = NULL; 1243 struct ieee80211_sta *ap_sta = NULL; 1244 struct iwl_mvm_vif_link_info *mvm_link; 1245 struct iwl_d3_manager_config d3_cfg_cmd_data = { 1246 /* 1247 * Program the minimum sleep time to 10 seconds, as many 1248 * platforms have issues processing a wakeup signal while 1249 * still being in the process of suspending. 1250 */ 1251 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000), 1252 }; 1253 struct iwl_host_cmd d3_cfg_cmd = { 1254 .id = D3_CONFIG_CMD, 1255 .flags = CMD_WANT_SKB | CMD_SEND_IN_D3, 1256 .data[0] = &d3_cfg_cmd_data, 1257 .len[0] = sizeof(d3_cfg_cmd_data), 1258 }; 1259 int ret; 1260 int len __maybe_unused; 1261 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 1262 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1263 1264 if (!wowlan) { 1265 /* 1266 * mac80211 shouldn't get here, but for D3 test 1267 * it doesn't warrant a warning 1268 */ 1269 WARN_ON(!test); 1270 return -EINVAL; 1271 } 1272 1273 vif = iwl_mvm_get_bss_vif(mvm); 1274 if (IS_ERR_OR_NULL(vif)) 1275 return 1; 1276 1277 ret = iwl_mvm_block_esr_sync(mvm, vif, IWL_MVM_ESR_BLOCKED_WOWLAN); 1278 if (ret) 1279 return ret; 1280 1281 mutex_lock(&mvm->mutex); 1282 1283 set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 1284 1285 synchronize_net(); 1286 1287 mvmvif = iwl_mvm_vif_from_mac80211(vif); 1288 1289 mvm_link = mvmvif->link[iwl_mvm_get_primary_link(vif)]; 1290 if (WARN_ON_ONCE(!mvm_link)) { 1291 ret = -EINVAL; 1292 goto out_noreset; 1293 } 1294 1295 if (mvm_link->ap_sta_id == IWL_MVM_INVALID_STA) { 1296 /* if we're not associated, this must be netdetect */ 1297 if (!wowlan->nd_config) { 1298 ret = 1; 1299 goto out_noreset; 1300 } 1301 1302 ret = iwl_mvm_netdetect_config( 1303 mvm, wowlan, wowlan->nd_config, vif); 1304 if (ret) 1305 goto out; 1306 1307 mvm->net_detect = true; 1308 } else { 1309 struct iwl_wowlan_config_cmd wowlan_config_cmd = { 1310 .offloading_tid = 0, 1311 }; 1312 1313 wowlan_config_cmd.sta_id = mvm_link->ap_sta_id; 1314 1315 ap_sta = rcu_dereference_protected( 1316 mvm->fw_id_to_mac_id[mvm_link->ap_sta_id], 1317 lockdep_is_held(&mvm->mutex)); 1318 if (IS_ERR_OR_NULL(ap_sta)) { 1319 ret = -EINVAL; 1320 goto out_noreset; 1321 } 1322 1323 ret = iwl_mvm_sta_ensure_queue( 1324 mvm, ap_sta->txq[wowlan_config_cmd.offloading_tid]); 1325 if (ret) 1326 goto out_noreset; 1327 1328 ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd, 1329 vif, mvmvif, ap_sta); 1330 if (ret) 1331 goto out_noreset; 1332 ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd, 1333 vif, mvmvif, mvm_link, ap_sta); 1334 if (ret) 1335 goto out; 1336 1337 mvm->net_detect = false; 1338 } 1339 1340 ret = iwl_mvm_power_update_device(mvm); 1341 if (ret) 1342 goto out; 1343 1344 ret = iwl_mvm_power_update_mac(mvm); 1345 if (ret) 1346 goto out; 1347 1348 #ifdef CONFIG_IWLWIFI_DEBUGFS 1349 if (mvm->d3_wake_sysassert) 1350 d3_cfg_cmd_data.wakeup_flags |= 1351 cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR); 1352 #endif 1353 1354 /* 1355 * Prior to 9000 device family the driver needs to stop the dbg 1356 * recording before entering D3. In later devices the FW stops the 1357 * recording automatically. 1358 */ 1359 if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_9000) 1360 iwl_fw_dbg_stop_restart_recording(&mvm->fwrt, NULL, true); 1361 1362 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_D3; 1363 1364 /* must be last -- this switches firmware state */ 1365 ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd); 1366 if (ret) 1367 goto out; 1368 #ifdef CONFIG_IWLWIFI_DEBUGFS 1369 len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt); 1370 if (len >= sizeof(u32)) { 1371 mvm->d3_test_pme_ptr = 1372 le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data); 1373 } 1374 #endif 1375 iwl_free_resp(&d3_cfg_cmd); 1376 1377 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1378 1379 ret = iwl_trans_d3_suspend(mvm->trans, test, !unified_image); 1380 out: 1381 if (ret < 0) { 1382 iwl_mvm_free_nd(mvm); 1383 1384 if (!unified_image) { 1385 if (mvm->fw_restart > 0) { 1386 mvm->fw_restart--; 1387 ieee80211_restart_hw(mvm->hw); 1388 } 1389 } 1390 1391 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 1392 } 1393 out_noreset: 1394 mutex_unlock(&mvm->mutex); 1395 1396 return ret; 1397 } 1398 1399 int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) 1400 { 1401 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1402 1403 iwl_mvm_pause_tcm(mvm, true); 1404 1405 iwl_fw_runtime_suspend(&mvm->fwrt); 1406 1407 return __iwl_mvm_suspend(hw, wowlan, false); 1408 } 1409 1410 struct iwl_multicast_key_data { 1411 u8 key[WOWLAN_KEY_MAX_SIZE]; 1412 u8 len; 1413 u8 flags; 1414 u8 id; 1415 u8 ipn[6]; 1416 }; 1417 1418 /* converted data from the different status responses */ 1419 struct iwl_wowlan_status_data { 1420 u64 replay_ctr; 1421 u32 num_of_gtk_rekeys; 1422 u32 received_beacons; 1423 u32 wakeup_reasons; 1424 u32 wake_packet_length; 1425 u32 wake_packet_bufsize; 1426 u16 pattern_number; 1427 u16 non_qos_seq_ctr; 1428 u16 qos_seq_ctr[8]; 1429 u8 tid_tear_down; 1430 1431 struct { 1432 /* including RX MIC key for TKIP */ 1433 u8 key[WOWLAN_KEY_MAX_SIZE]; 1434 u8 len; 1435 u8 flags; 1436 u8 id; 1437 } gtk[WOWLAN_GTK_KEYS_NUM]; 1438 1439 struct { 1440 /* 1441 * We store both the TKIP and AES representations 1442 * coming from the firmware because we decode the 1443 * data from there before we iterate the keys and 1444 * know which one we need. 1445 */ 1446 struct { 1447 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT]; 1448 } tkip, aes; 1449 1450 /* 1451 * We use -1 for when we have valid data but don't know 1452 * the key ID from firmware, and thus it needs to be 1453 * installed with the last key (depending on rekeying). 1454 */ 1455 s8 key_id; 1456 bool valid; 1457 } gtk_seq[2]; 1458 1459 struct { 1460 /* Same as above */ 1461 struct { 1462 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT]; 1463 u64 tx_pn; 1464 } tkip, aes; 1465 } ptk; 1466 1467 struct iwl_multicast_key_data igtk; 1468 struct iwl_multicast_key_data bigtk[WOWLAN_BIGTK_KEYS_NUM]; 1469 1470 int num_mlo_keys; 1471 struct iwl_wowlan_mlo_gtk mlo_keys[WOWLAN_MAX_MLO_KEYS]; 1472 1473 u8 *wake_packet; 1474 }; 1475 1476 static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm, 1477 struct ieee80211_vif *vif, 1478 struct iwl_wowlan_status_data *status) 1479 { 1480 struct sk_buff *pkt = NULL; 1481 struct cfg80211_wowlan_wakeup wakeup = { 1482 .pattern_idx = -1, 1483 }; 1484 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; 1485 u32 reasons = status->wakeup_reasons; 1486 1487 if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) { 1488 wakeup_report = NULL; 1489 goto report; 1490 } 1491 1492 pm_wakeup_event(mvm->dev, 0); 1493 1494 if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET) 1495 wakeup.magic_pkt = true; 1496 1497 if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN) 1498 wakeup.pattern_idx = 1499 status->pattern_number; 1500 1501 if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 1502 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH | 1503 IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)) 1504 wakeup.disconnect = true; 1505 1506 if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE) 1507 wakeup.gtk_rekey_failure = true; 1508 1509 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 1510 wakeup.rfkill_release = true; 1511 1512 if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST) 1513 wakeup.eap_identity_req = true; 1514 1515 if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE) 1516 wakeup.four_way_handshake = true; 1517 1518 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS) 1519 wakeup.tcp_connlost = true; 1520 1521 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE) 1522 wakeup.tcp_nomoretokens = true; 1523 1524 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET) 1525 wakeup.tcp_match = true; 1526 1527 if (reasons & IWL_WAKEUP_BY_11W_UNPROTECTED_DEAUTH_OR_DISASSOC) 1528 wakeup.unprot_deauth_disassoc = true; 1529 1530 if (status->wake_packet) { 1531 int pktsize = status->wake_packet_bufsize; 1532 int pktlen = status->wake_packet_length; 1533 const u8 *pktdata = status->wake_packet; 1534 const struct ieee80211_hdr *hdr = (const void *)pktdata; 1535 int truncated = pktlen - pktsize; 1536 1537 /* this would be a firmware bug */ 1538 if (WARN_ON_ONCE(truncated < 0)) 1539 truncated = 0; 1540 1541 if (ieee80211_is_data(hdr->frame_control)) { 1542 int hdrlen = ieee80211_hdrlen(hdr->frame_control); 1543 int ivlen = 0, icvlen = 4; /* also FCS */ 1544 1545 pkt = alloc_skb(pktsize, GFP_KERNEL); 1546 if (!pkt) 1547 goto report; 1548 1549 skb_put_data(pkt, pktdata, hdrlen); 1550 pktdata += hdrlen; 1551 pktsize -= hdrlen; 1552 1553 if (ieee80211_has_protected(hdr->frame_control)) { 1554 /* 1555 * This is unlocked and using gtk_i(c)vlen, 1556 * but since everything is under RTNL still 1557 * that's not really a problem - changing 1558 * it would be difficult. 1559 */ 1560 if (is_multicast_ether_addr(hdr->addr1)) { 1561 ivlen = mvm->gtk_ivlen; 1562 icvlen += mvm->gtk_icvlen; 1563 } else { 1564 ivlen = mvm->ptk_ivlen; 1565 icvlen += mvm->ptk_icvlen; 1566 } 1567 } 1568 1569 /* if truncated, FCS/ICV is (partially) gone */ 1570 if (truncated >= icvlen) { 1571 icvlen = 0; 1572 truncated -= icvlen; 1573 } else { 1574 icvlen -= truncated; 1575 truncated = 0; 1576 } 1577 1578 pktsize -= ivlen + icvlen; 1579 pktdata += ivlen; 1580 1581 skb_put_data(pkt, pktdata, pktsize); 1582 1583 if (ieee80211_data_to_8023(pkt, vif->addr, vif->type)) 1584 goto report; 1585 wakeup.packet = pkt->data; 1586 wakeup.packet_present_len = pkt->len; 1587 wakeup.packet_len = pkt->len - truncated; 1588 wakeup.packet_80211 = false; 1589 } else { 1590 int fcslen = 4; 1591 1592 if (truncated >= 4) { 1593 truncated -= 4; 1594 fcslen = 0; 1595 } else { 1596 fcslen -= truncated; 1597 truncated = 0; 1598 } 1599 pktsize -= fcslen; 1600 wakeup.packet = status->wake_packet; 1601 wakeup.packet_present_len = pktsize; 1602 wakeup.packet_len = pktlen - truncated; 1603 wakeup.packet_80211 = true; 1604 } 1605 } 1606 1607 report: 1608 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); 1609 kfree_skb(pkt); 1610 } 1611 1612 static void iwl_mvm_le64_to_aes_seq(__le64 le_pn, struct ieee80211_key_seq *seq) 1613 { 1614 u64 pn = le64_to_cpu(le_pn); 1615 1616 seq->ccmp.pn[0] = pn >> 40; 1617 seq->ccmp.pn[1] = pn >> 32; 1618 seq->ccmp.pn[2] = pn >> 24; 1619 seq->ccmp.pn[3] = pn >> 16; 1620 seq->ccmp.pn[4] = pn >> 8; 1621 seq->ccmp.pn[5] = pn; 1622 } 1623 1624 static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc, 1625 struct ieee80211_key_seq *seq) 1626 { 1627 iwl_mvm_le64_to_aes_seq(sc->pn, seq); 1628 } 1629 1630 static void iwl_mvm_le64_to_tkip_seq(__le64 le_pn, struct ieee80211_key_seq *seq) 1631 { 1632 u64 pn = le64_to_cpu(le_pn); 1633 1634 seq->tkip.iv16 = (u16)pn; 1635 seq->tkip.iv32 = (u32)(pn >> 16); 1636 } 1637 1638 static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc, 1639 struct ieee80211_key_seq *seq) 1640 { 1641 seq->tkip.iv32 = le32_to_cpu(sc->iv32); 1642 seq->tkip.iv16 = le16_to_cpu(sc->iv16); 1643 } 1644 1645 static void iwl_mvm_set_key_rx_seq_tids(struct ieee80211_key_conf *key, 1646 struct ieee80211_key_seq *seq) 1647 { 1648 int tid; 1649 1650 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) 1651 ieee80211_set_key_rx_seq(key, tid, &seq[tid]); 1652 } 1653 1654 static void iwl_mvm_set_aes_ptk_rx_seq(struct iwl_mvm *mvm, 1655 struct iwl_wowlan_status_data *status, 1656 struct ieee80211_sta *sta, 1657 struct ieee80211_key_conf *key) 1658 { 1659 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1660 struct iwl_mvm_key_pn *ptk_pn; 1661 int tid; 1662 1663 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.aes.seq); 1664 1665 if (!iwl_mvm_has_new_rx_api(mvm)) 1666 return; 1667 1668 1669 rcu_read_lock(); 1670 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]); 1671 if (WARN_ON(!ptk_pn)) { 1672 rcu_read_unlock(); 1673 return; 1674 } 1675 1676 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1677 int i; 1678 1679 for (i = 1; i < mvm->trans->num_rx_queues; i++) 1680 memcpy(ptk_pn->q[i].pn[tid], 1681 status->ptk.aes.seq[tid].ccmp.pn, 1682 IEEE80211_CCMP_PN_LEN); 1683 } 1684 rcu_read_unlock(); 1685 } 1686 1687 static void iwl_mvm_convert_key_counters(struct iwl_wowlan_status_data *status, 1688 union iwl_all_tsc_rsc *sc) 1689 { 1690 int i; 1691 1692 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT); 1693 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC); 1694 1695 /* GTK RX counters */ 1696 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1697 iwl_mvm_tkip_sc_to_seq(&sc->tkip.multicast_rsc[i], 1698 &status->gtk_seq[0].tkip.seq[i]); 1699 iwl_mvm_aes_sc_to_seq(&sc->aes.multicast_rsc[i], 1700 &status->gtk_seq[0].aes.seq[i]); 1701 } 1702 status->gtk_seq[0].valid = true; 1703 status->gtk_seq[0].key_id = -1; 1704 1705 /* PTK TX counter */ 1706 status->ptk.tkip.tx_pn = (u64)le16_to_cpu(sc->tkip.tsc.iv16) | 1707 ((u64)le32_to_cpu(sc->tkip.tsc.iv32) << 16); 1708 status->ptk.aes.tx_pn = le64_to_cpu(sc->aes.tsc.pn); 1709 1710 /* PTK RX counters */ 1711 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1712 iwl_mvm_tkip_sc_to_seq(&sc->tkip.unicast_rsc[i], 1713 &status->ptk.tkip.seq[i]); 1714 iwl_mvm_aes_sc_to_seq(&sc->aes.unicast_rsc[i], 1715 &status->ptk.aes.seq[i]); 1716 } 1717 } 1718 1719 static void 1720 iwl_mvm_convert_key_counters_v5_gtk_seq(struct iwl_wowlan_status_data *status, 1721 struct iwl_wowlan_all_rsc_tsc_v5 *sc, 1722 unsigned int idx, unsigned int key_id) 1723 { 1724 int tid; 1725 1726 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1727 iwl_mvm_le64_to_tkip_seq(sc->mcast_rsc[idx][tid], 1728 &status->gtk_seq[idx].tkip.seq[tid]); 1729 iwl_mvm_le64_to_aes_seq(sc->mcast_rsc[idx][tid], 1730 &status->gtk_seq[idx].aes.seq[tid]); 1731 } 1732 1733 status->gtk_seq[idx].valid = true; 1734 status->gtk_seq[idx].key_id = key_id; 1735 } 1736 1737 static void 1738 iwl_mvm_convert_key_counters_v5(struct iwl_wowlan_status_data *status, 1739 struct iwl_wowlan_all_rsc_tsc_v5 *sc) 1740 { 1741 int i, tid; 1742 1743 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT); 1744 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC); 1745 BUILD_BUG_ON(ARRAY_SIZE(sc->mcast_rsc) != ARRAY_SIZE(status->gtk_seq)); 1746 1747 /* GTK RX counters */ 1748 for (i = 0; i < ARRAY_SIZE(sc->mcast_key_id_map); i++) { 1749 u8 entry = sc->mcast_key_id_map[i]; 1750 1751 if (entry < ARRAY_SIZE(sc->mcast_rsc)) 1752 iwl_mvm_convert_key_counters_v5_gtk_seq(status, sc, 1753 entry, i); 1754 } 1755 1756 /* PTK TX counters not needed, assigned in device */ 1757 1758 /* PTK RX counters */ 1759 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1760 iwl_mvm_le64_to_tkip_seq(sc->ucast_rsc[tid], 1761 &status->ptk.tkip.seq[tid]); 1762 iwl_mvm_le64_to_aes_seq(sc->ucast_rsc[tid], 1763 &status->ptk.aes.seq[tid]); 1764 } 1765 } 1766 1767 static void iwl_mvm_set_key_rx_seq_idx(struct ieee80211_key_conf *key, 1768 struct iwl_wowlan_status_data *status, 1769 int idx) 1770 { 1771 switch (key->cipher) { 1772 case WLAN_CIPHER_SUITE_CCMP: 1773 case WLAN_CIPHER_SUITE_GCMP: 1774 case WLAN_CIPHER_SUITE_GCMP_256: 1775 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].aes.seq); 1776 break; 1777 case WLAN_CIPHER_SUITE_TKIP: 1778 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].tkip.seq); 1779 break; 1780 default: 1781 WARN_ON(1); 1782 } 1783 } 1784 1785 static void iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf *key, 1786 struct iwl_wowlan_status_data *status, 1787 bool installed) 1788 { 1789 int i; 1790 1791 for (i = 0; i < ARRAY_SIZE(status->gtk_seq); i++) { 1792 if (!status->gtk_seq[i].valid) 1793 continue; 1794 1795 /* Handle the case where we know the key ID */ 1796 if (status->gtk_seq[i].key_id == key->keyidx) { 1797 s8 new_key_id = -1; 1798 1799 if (status->num_of_gtk_rekeys) 1800 new_key_id = status->gtk[0].flags & 1801 IWL_WOWLAN_GTK_IDX_MASK; 1802 1803 /* Don't install a new key's value to an old key */ 1804 if (new_key_id != key->keyidx) 1805 iwl_mvm_set_key_rx_seq_idx(key, status, i); 1806 continue; 1807 } 1808 1809 /* handle the case where we didn't, last key only */ 1810 if (status->gtk_seq[i].key_id == -1 && 1811 (!status->num_of_gtk_rekeys || installed)) 1812 iwl_mvm_set_key_rx_seq_idx(key, status, i); 1813 } 1814 } 1815 1816 struct iwl_mvm_d3_gtk_iter_data { 1817 struct iwl_mvm *mvm; 1818 struct iwl_wowlan_status_data *status; 1819 u32 gtk_cipher, igtk_cipher, bigtk_cipher; 1820 bool unhandled_cipher, igtk_support, bigtk_support; 1821 int num_keys; 1822 }; 1823 1824 static void iwl_mvm_d3_find_last_keys(struct ieee80211_hw *hw, 1825 struct ieee80211_vif *vif, 1826 struct ieee80211_sta *sta, 1827 struct ieee80211_key_conf *key, 1828 void *_data) 1829 { 1830 struct iwl_mvm_d3_gtk_iter_data *data = _data; 1831 int link_id = vif->active_links ? __ffs(vif->active_links) : -1; 1832 1833 if (link_id >= 0 && key->link_id >= 0 && link_id != key->link_id) 1834 return; 1835 1836 if (data->unhandled_cipher) 1837 return; 1838 1839 switch (key->cipher) { 1840 case WLAN_CIPHER_SUITE_WEP40: 1841 case WLAN_CIPHER_SUITE_WEP104: 1842 /* ignore WEP completely, nothing to do */ 1843 return; 1844 case WLAN_CIPHER_SUITE_CCMP: 1845 case WLAN_CIPHER_SUITE_GCMP: 1846 case WLAN_CIPHER_SUITE_GCMP_256: 1847 case WLAN_CIPHER_SUITE_TKIP: 1848 /* we support these */ 1849 data->gtk_cipher = key->cipher; 1850 break; 1851 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 1852 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 1853 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 1854 case WLAN_CIPHER_SUITE_AES_CMAC: 1855 /* we support these */ 1856 if (data->igtk_support && 1857 (key->keyidx == 4 || key->keyidx == 5)) { 1858 data->igtk_cipher = key->cipher; 1859 } else if (data->bigtk_support && 1860 (key->keyidx == 6 || key->keyidx == 7)) { 1861 data->bigtk_cipher = key->cipher; 1862 } else { 1863 data->unhandled_cipher = true; 1864 return; 1865 } 1866 break; 1867 default: 1868 /* everything else - disconnect from AP */ 1869 data->unhandled_cipher = true; 1870 return; 1871 } 1872 1873 data->num_keys++; 1874 } 1875 1876 static void 1877 iwl_mvm_d3_set_igtk_bigtk_ipn(const struct iwl_multicast_key_data *key, 1878 struct ieee80211_key_seq *seq, u32 cipher) 1879 { 1880 switch (cipher) { 1881 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 1882 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 1883 BUILD_BUG_ON(sizeof(seq->aes_gmac.pn) != sizeof(key->ipn)); 1884 memcpy(seq->aes_gmac.pn, key->ipn, sizeof(seq->aes_gmac.pn)); 1885 break; 1886 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 1887 case WLAN_CIPHER_SUITE_AES_CMAC: 1888 BUILD_BUG_ON(sizeof(seq->aes_cmac.pn) != sizeof(key->ipn)); 1889 memcpy(seq->aes_cmac.pn, key->ipn, sizeof(seq->aes_cmac.pn)); 1890 break; 1891 default: 1892 WARN_ON(1); 1893 } 1894 } 1895 1896 static void 1897 iwl_mvm_d3_update_igtk_bigtk(struct iwl_wowlan_status_data *status, 1898 struct ieee80211_key_conf *key, 1899 struct iwl_multicast_key_data *key_data) 1900 { 1901 if (status->num_of_gtk_rekeys && key_data->len) { 1902 /* remove rekeyed key */ 1903 ieee80211_remove_key(key); 1904 } else { 1905 struct ieee80211_key_seq seq; 1906 1907 iwl_mvm_d3_set_igtk_bigtk_ipn(key_data, 1908 &seq, 1909 key->cipher); 1910 ieee80211_set_key_rx_seq(key, 0, &seq); 1911 } 1912 } 1913 1914 static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw, 1915 struct ieee80211_vif *vif, 1916 struct ieee80211_sta *sta, 1917 struct ieee80211_key_conf *key, 1918 void *_data) 1919 { 1920 struct iwl_mvm_d3_gtk_iter_data *data = _data; 1921 struct iwl_wowlan_status_data *status = data->status; 1922 s8 keyidx; 1923 int link_id = vif->active_links ? __ffs(vif->active_links) : -1; 1924 1925 if (link_id >= 0 && key->link_id >= 0 && link_id != key->link_id) 1926 return; 1927 1928 if (data->unhandled_cipher) 1929 return; 1930 1931 switch (key->cipher) { 1932 case WLAN_CIPHER_SUITE_WEP40: 1933 case WLAN_CIPHER_SUITE_WEP104: 1934 /* ignore WEP completely, nothing to do */ 1935 return; 1936 case WLAN_CIPHER_SUITE_CCMP: 1937 case WLAN_CIPHER_SUITE_GCMP: 1938 case WLAN_CIPHER_SUITE_GCMP_256: 1939 if (sta) { 1940 atomic64_set(&key->tx_pn, status->ptk.aes.tx_pn); 1941 iwl_mvm_set_aes_ptk_rx_seq(data->mvm, status, sta, key); 1942 return; 1943 } 1944 fallthrough; 1945 case WLAN_CIPHER_SUITE_TKIP: 1946 if (sta) { 1947 atomic64_set(&key->tx_pn, status->ptk.tkip.tx_pn); 1948 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.tkip.seq); 1949 return; 1950 } 1951 keyidx = key->keyidx; 1952 /* The current key is always sent by the FW, even if it wasn't 1953 * rekeyed during D3. 1954 * We remove an existing key if it has the same index as 1955 * a new key 1956 */ 1957 if (status->num_of_gtk_rekeys && 1958 ((status->gtk[0].len && keyidx == status->gtk[0].id) || 1959 (status->gtk[1].len && keyidx == status->gtk[1].id))) { 1960 ieee80211_remove_key(key); 1961 } else { 1962 iwl_mvm_set_key_rx_seq(key, data->status, false); 1963 } 1964 break; 1965 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 1966 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 1967 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 1968 case WLAN_CIPHER_SUITE_AES_CMAC: 1969 if (key->keyidx == 4 || key->keyidx == 5) { 1970 iwl_mvm_d3_update_igtk_bigtk(status, key, 1971 &status->igtk); 1972 } 1973 if (key->keyidx == 6 || key->keyidx == 7) { 1974 u8 idx = key->keyidx == status->bigtk[1].id; 1975 1976 iwl_mvm_d3_update_igtk_bigtk(status, key, 1977 &status->bigtk[idx]); 1978 } 1979 } 1980 } 1981 1982 struct iwl_mvm_d3_mlo_old_keys { 1983 u32 cipher[IEEE80211_MLD_MAX_NUM_LINKS][WOWLAN_MLO_GTK_KEY_NUM_TYPES]; 1984 struct ieee80211_key_conf *key[IEEE80211_MLD_MAX_NUM_LINKS][8]; 1985 }; 1986 1987 static void iwl_mvm_mlo_key_ciphers(struct ieee80211_hw *hw, 1988 struct ieee80211_vif *vif, 1989 struct ieee80211_sta *sta, 1990 struct ieee80211_key_conf *key, 1991 void *data) 1992 { 1993 struct iwl_mvm_d3_mlo_old_keys *old_keys = data; 1994 enum iwl_wowlan_mlo_gtk_type key_type; 1995 1996 if (key->link_id < 0) 1997 return; 1998 1999 if (WARN_ON(key->link_id >= IEEE80211_MLD_MAX_NUM_LINKS || 2000 key->keyidx >= 8)) 2001 return; 2002 2003 if (WARN_ON(old_keys->key[key->link_id][key->keyidx])) 2004 return; 2005 2006 switch (key->cipher) { 2007 case WLAN_CIPHER_SUITE_CCMP: 2008 case WLAN_CIPHER_SUITE_GCMP: 2009 case WLAN_CIPHER_SUITE_GCMP_256: 2010 key_type = WOWLAN_MLO_GTK_KEY_TYPE_GTK; 2011 break; 2012 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 2013 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 2014 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 2015 case WLAN_CIPHER_SUITE_AES_CMAC: 2016 if (key->keyidx == 4 || key->keyidx == 5) { 2017 key_type = WOWLAN_MLO_GTK_KEY_TYPE_IGTK; 2018 break; 2019 } else if (key->keyidx == 6 || key->keyidx == 7) { 2020 key_type = WOWLAN_MLO_GTK_KEY_TYPE_BIGTK; 2021 break; 2022 } 2023 return; 2024 default: 2025 /* ignore WEP/TKIP or unknown ciphers */ 2026 return; 2027 } 2028 2029 old_keys->cipher[key->link_id][key_type] = key->cipher; 2030 old_keys->key[key->link_id][key->keyidx] = key; 2031 } 2032 2033 static bool iwl_mvm_mlo_gtk_rekey(struct iwl_wowlan_status_data *status, 2034 struct ieee80211_vif *vif, 2035 struct iwl_mvm *mvm) 2036 { 2037 int i; 2038 struct iwl_mvm_d3_mlo_old_keys *old_keys; 2039 bool ret = true; 2040 2041 IWL_DEBUG_WOWLAN(mvm, "Num of MLO Keys: %d\n", status->num_mlo_keys); 2042 if (!status->num_mlo_keys) 2043 return true; 2044 2045 old_keys = kzalloc(sizeof(*old_keys), GFP_KERNEL); 2046 if (!old_keys) 2047 return false; 2048 2049 /* find the cipher for each mlo key */ 2050 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_mlo_key_ciphers, old_keys); 2051 2052 for (i = 0; i < status->num_mlo_keys; i++) { 2053 struct iwl_wowlan_mlo_gtk *mlo_key = &status->mlo_keys[i]; 2054 struct ieee80211_key_conf *key, *old_key; 2055 struct ieee80211_key_seq seq; 2056 struct { 2057 struct ieee80211_key_conf conf; 2058 u8 key[32]; 2059 } conf = {}; 2060 u16 flags = le16_to_cpu(mlo_key->flags); 2061 int j, link_id, key_id, key_type; 2062 2063 link_id = u16_get_bits(flags, WOWLAN_MLO_GTK_FLAG_LINK_ID_MSK); 2064 key_id = u16_get_bits(flags, WOWLAN_MLO_GTK_FLAG_KEY_ID_MSK); 2065 key_type = u16_get_bits(flags, 2066 WOWLAN_MLO_GTK_FLAG_KEY_TYPE_MSK); 2067 2068 if (!(vif->valid_links & BIT(link_id))) 2069 continue; 2070 2071 if (WARN_ON(link_id >= IEEE80211_MLD_MAX_NUM_LINKS || 2072 key_id >= 8 || 2073 key_type >= WOWLAN_MLO_GTK_KEY_NUM_TYPES)) 2074 continue; 2075 2076 conf.conf.cipher = old_keys->cipher[link_id][key_type]; 2077 /* WARN_ON? */ 2078 if (!conf.conf.cipher) 2079 continue; 2080 2081 conf.conf.keylen = 0; 2082 switch (conf.conf.cipher) { 2083 case WLAN_CIPHER_SUITE_CCMP: 2084 case WLAN_CIPHER_SUITE_GCMP: 2085 conf.conf.keylen = WLAN_KEY_LEN_CCMP; 2086 break; 2087 case WLAN_CIPHER_SUITE_GCMP_256: 2088 conf.conf.keylen = WLAN_KEY_LEN_GCMP_256; 2089 break; 2090 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 2091 conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_128; 2092 break; 2093 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 2094 conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_256; 2095 break; 2096 case WLAN_CIPHER_SUITE_AES_CMAC: 2097 conf.conf.keylen = WLAN_KEY_LEN_AES_CMAC; 2098 break; 2099 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 2100 conf.conf.keylen = WLAN_KEY_LEN_BIP_CMAC_256; 2101 break; 2102 } 2103 2104 if (WARN_ON(!conf.conf.keylen || 2105 conf.conf.keylen > sizeof(conf.key))) 2106 continue; 2107 2108 memcpy(conf.conf.key, mlo_key->key, conf.conf.keylen); 2109 conf.conf.keyidx = key_id; 2110 2111 old_key = old_keys->key[link_id][key_id]; 2112 if (old_key) { 2113 IWL_DEBUG_WOWLAN(mvm, 2114 "Remove MLO key id %d, link id %d\n", 2115 key_id, link_id); 2116 ieee80211_remove_key(old_key); 2117 } 2118 2119 IWL_DEBUG_WOWLAN(mvm, "Add MLO key id %d, link id %d\n", 2120 key_id, link_id); 2121 key = ieee80211_gtk_rekey_add(vif, &conf.conf, link_id); 2122 if (WARN_ON(IS_ERR(key))) { 2123 ret = false; 2124 goto out; 2125 } 2126 2127 /* 2128 * mac80211 expects the pn in big-endian 2129 * also note that seq is a union of all cipher types 2130 * (ccmp, gcmp, cmac, gmac), and they all have the same 2131 * pn field (of length 6) so just copy it to ccmp.pn. 2132 */ 2133 for (j = 5; j >= 0; j--) 2134 seq.ccmp.pn[5 - j] = mlo_key->pn[j]; 2135 2136 /* group keys are non-QoS and use TID 0 */ 2137 ieee80211_set_key_rx_seq(key, 0, &seq); 2138 } 2139 2140 out: 2141 kfree(old_keys); 2142 return ret; 2143 } 2144 2145 static bool iwl_mvm_gtk_rekey(struct iwl_wowlan_status_data *status, 2146 struct ieee80211_vif *vif, 2147 struct iwl_mvm *mvm, u32 gtk_cipher) 2148 { 2149 int i, j; 2150 struct ieee80211_key_conf *key; 2151 struct { 2152 struct ieee80211_key_conf conf; 2153 u8 key[32]; 2154 } conf = { 2155 .conf.cipher = gtk_cipher, 2156 }; 2157 int link_id = vif->active_links ? __ffs(vif->active_links) : -1; 2158 2159 BUILD_BUG_ON(WLAN_KEY_LEN_CCMP != WLAN_KEY_LEN_GCMP); 2160 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_CCMP); 2161 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_GCMP_256); 2162 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_TKIP); 2163 BUILD_BUG_ON(sizeof(conf.key) < sizeof(status->gtk[0].key)); 2164 2165 switch (gtk_cipher) { 2166 case WLAN_CIPHER_SUITE_CCMP: 2167 case WLAN_CIPHER_SUITE_GCMP: 2168 conf.conf.keylen = WLAN_KEY_LEN_CCMP; 2169 break; 2170 case WLAN_CIPHER_SUITE_GCMP_256: 2171 conf.conf.keylen = WLAN_KEY_LEN_GCMP_256; 2172 break; 2173 case WLAN_CIPHER_SUITE_TKIP: 2174 conf.conf.keylen = WLAN_KEY_LEN_TKIP; 2175 break; 2176 default: 2177 WARN_ON(1); 2178 } 2179 2180 for (i = 0; i < ARRAY_SIZE(status->gtk); i++) { 2181 if (!status->gtk[i].len) 2182 continue; 2183 2184 conf.conf.keyidx = status->gtk[i].id; 2185 IWL_DEBUG_WOWLAN(mvm, 2186 "Received from FW GTK cipher %d, key index %d\n", 2187 conf.conf.cipher, conf.conf.keyidx); 2188 memcpy(conf.conf.key, status->gtk[i].key, 2189 sizeof(status->gtk[i].key)); 2190 2191 key = ieee80211_gtk_rekey_add(vif, &conf.conf, link_id); 2192 if (IS_ERR(key)) 2193 return false; 2194 2195 for (j = 0; j < ARRAY_SIZE(status->gtk_seq); j++) { 2196 if (!status->gtk_seq[j].valid || 2197 status->gtk_seq[j].key_id != key->keyidx) 2198 continue; 2199 iwl_mvm_set_key_rx_seq_idx(key, status, j); 2200 break; 2201 } 2202 WARN_ON(j == ARRAY_SIZE(status->gtk_seq)); 2203 } 2204 2205 return true; 2206 } 2207 2208 static bool 2209 iwl_mvm_d3_igtk_bigtk_rekey_add(struct iwl_wowlan_status_data *status, 2210 struct ieee80211_vif *vif, u32 cipher, 2211 struct iwl_multicast_key_data *key_data) 2212 { 2213 struct ieee80211_key_conf *key_config; 2214 struct { 2215 struct ieee80211_key_conf conf; 2216 u8 key[WOWLAN_KEY_MAX_SIZE]; 2217 } conf = { 2218 .conf.cipher = cipher, 2219 .conf.keyidx = key_data->id, 2220 }; 2221 struct ieee80211_key_seq seq; 2222 int link_id = vif->active_links ? __ffs(vif->active_links) : -1; 2223 2224 if (!key_data->len) 2225 return true; 2226 2227 iwl_mvm_d3_set_igtk_bigtk_ipn(key_data, &seq, conf.conf.cipher); 2228 2229 switch (cipher) { 2230 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 2231 conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_128; 2232 break; 2233 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 2234 conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_256; 2235 break; 2236 case WLAN_CIPHER_SUITE_AES_CMAC: 2237 conf.conf.keylen = WLAN_KEY_LEN_AES_CMAC; 2238 break; 2239 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 2240 conf.conf.keylen = WLAN_KEY_LEN_BIP_CMAC_256; 2241 break; 2242 default: 2243 WARN_ON(1); 2244 } 2245 BUILD_BUG_ON(sizeof(conf.key) < sizeof(key_data->key)); 2246 memcpy(conf.conf.key, key_data->key, conf.conf.keylen); 2247 2248 key_config = ieee80211_gtk_rekey_add(vif, &conf.conf, link_id); 2249 if (IS_ERR(key_config)) 2250 return false; 2251 ieee80211_set_key_rx_seq(key_config, 0, &seq); 2252 2253 if (key_config->keyidx == 4 || key_config->keyidx == 5) { 2254 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2255 struct iwl_mvm_vif_link_info *mvm_link; 2256 2257 link_id = link_id < 0 ? 0 : link_id; 2258 mvm_link = mvmvif->link[link_id]; 2259 mvm_link->igtk = key_config; 2260 } 2261 2262 return true; 2263 } 2264 2265 static int iwl_mvm_lookup_wowlan_status_ver(struct iwl_mvm *mvm) 2266 { 2267 u8 notif_ver; 2268 2269 if (!fw_has_api(&mvm->fw->ucode_capa, 2270 IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL)) 2271 return 6; 2272 2273 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */ 2274 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP, 2275 WOWLAN_GET_STATUSES, 0); 2276 if (!notif_ver) 2277 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, 2278 WOWLAN_GET_STATUSES, 7); 2279 2280 return notif_ver; 2281 } 2282 2283 static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm, 2284 struct ieee80211_vif *vif, 2285 struct iwl_wowlan_status_data *status) 2286 { 2287 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2288 struct iwl_mvm_d3_gtk_iter_data gtkdata = { 2289 .mvm = mvm, 2290 .status = status, 2291 }; 2292 int i; 2293 u32 disconnection_reasons = 2294 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 2295 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH; 2296 2297 if (!status || !vif->bss_conf.bssid) 2298 return false; 2299 2300 if (iwl_mvm_lookup_wowlan_status_ver(mvm) > 6 || 2301 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2302 WOWLAN_INFO_NOTIFICATION, 2303 0)) 2304 gtkdata.igtk_support = true; 2305 2306 if (iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2307 WOWLAN_INFO_NOTIFICATION, 2308 0) >= 3) 2309 gtkdata.bigtk_support = true; 2310 2311 /* find last GTK that we used initially, if any */ 2312 ieee80211_iter_keys(mvm->hw, vif, 2313 iwl_mvm_d3_find_last_keys, >kdata); 2314 /* not trying to keep connections with MFP/unhandled ciphers */ 2315 if (gtkdata.unhandled_cipher) 2316 return false; 2317 if (!gtkdata.num_keys) 2318 goto out; 2319 2320 /* 2321 * invalidate all other GTKs that might still exist and update 2322 * the one that we used 2323 */ 2324 ieee80211_iter_keys(mvm->hw, vif, 2325 iwl_mvm_d3_update_keys, >kdata); 2326 2327 if (status->num_of_gtk_rekeys) { 2328 __be64 replay_ctr = cpu_to_be64(status->replay_ctr); 2329 2330 IWL_DEBUG_WOWLAN(mvm, "num of GTK rekeying %d\n", 2331 status->num_of_gtk_rekeys); 2332 2333 if (!iwl_mvm_gtk_rekey(status, vif, mvm, gtkdata.gtk_cipher)) 2334 return false; 2335 2336 if (!iwl_mvm_d3_igtk_bigtk_rekey_add(status, vif, 2337 gtkdata.igtk_cipher, 2338 &status->igtk)) 2339 return false; 2340 2341 for (i = 0; i < ARRAY_SIZE(status->bigtk); i++) { 2342 if (!iwl_mvm_d3_igtk_bigtk_rekey_add(status, vif, 2343 gtkdata.bigtk_cipher, 2344 &status->bigtk[i])) 2345 return false; 2346 } 2347 2348 if (!iwl_mvm_mlo_gtk_rekey(status, vif, mvm)) 2349 return false; 2350 2351 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid, 2352 (void *)&replay_ctr, GFP_KERNEL); 2353 } 2354 2355 out: 2356 if (iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP, 2357 WOWLAN_GET_STATUSES, 2358 IWL_FW_CMD_VER_UNKNOWN) < 10) { 2359 mvmvif->seqno_valid = true; 2360 /* +0x10 because the set API expects next-to-use, not last-used */ 2361 mvmvif->seqno = status->non_qos_seq_ctr + 0x10; 2362 } 2363 2364 if (status->wakeup_reasons & disconnection_reasons) 2365 return false; 2366 2367 return true; 2368 } 2369 2370 static void iwl_mvm_convert_gtk_v2(struct iwl_wowlan_status_data *status, 2371 struct iwl_wowlan_gtk_status_v2 *data) 2372 { 2373 BUILD_BUG_ON(sizeof(status->gtk[0].key) < sizeof(data->key)); 2374 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY + 2375 sizeof(data->tkip_mic_key) > 2376 sizeof(status->gtk[0].key)); 2377 2378 status->gtk[0].len = data->key_len; 2379 status->gtk[0].flags = data->key_flags; 2380 2381 memcpy(status->gtk[0].key, data->key, sizeof(data->key)); 2382 2383 /* if it's as long as the TKIP encryption key, copy MIC key */ 2384 if (status->gtk[0].len == NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY) 2385 memcpy(status->gtk[0].key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 2386 data->tkip_mic_key, sizeof(data->tkip_mic_key)); 2387 } 2388 2389 static void iwl_mvm_convert_gtk_v3(struct iwl_wowlan_status_data *status, 2390 struct iwl_wowlan_gtk_status_v3 *data) 2391 { 2392 int data_idx, status_idx = 0; 2393 2394 BUILD_BUG_ON(sizeof(status->gtk[0].key) < sizeof(data[0].key)); 2395 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY + 2396 sizeof(data[0].tkip_mic_key) > 2397 sizeof(status->gtk[0].key)); 2398 BUILD_BUG_ON(ARRAY_SIZE(status->gtk) < WOWLAN_GTK_KEYS_NUM); 2399 for (data_idx = 0; data_idx < ARRAY_SIZE(status->gtk); data_idx++) { 2400 if (!(data[data_idx].key_len)) 2401 continue; 2402 status->gtk[status_idx].len = data[data_idx].key_len; 2403 status->gtk[status_idx].flags = data[data_idx].key_flags; 2404 status->gtk[status_idx].id = status->gtk[status_idx].flags & 2405 IWL_WOWLAN_GTK_IDX_MASK; 2406 2407 memcpy(status->gtk[status_idx].key, data[data_idx].key, 2408 sizeof(data[data_idx].key)); 2409 2410 /* if it's as long as the TKIP encryption key, copy MIC key */ 2411 if (status->gtk[status_idx].len == 2412 NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY) 2413 memcpy(status->gtk[status_idx].key + 2414 NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 2415 data[data_idx].tkip_mic_key, 2416 sizeof(data[data_idx].tkip_mic_key)); 2417 status_idx++; 2418 } 2419 } 2420 2421 static void iwl_mvm_convert_igtk(struct iwl_wowlan_status_data *status, 2422 struct iwl_wowlan_igtk_status *data) 2423 { 2424 int i; 2425 2426 BUILD_BUG_ON(sizeof(status->igtk.key) < sizeof(data->key)); 2427 BUILD_BUG_ON(sizeof(status->igtk.ipn) != sizeof(data->ipn)); 2428 2429 if (!data->key_len) 2430 return; 2431 2432 status->igtk.len = data->key_len; 2433 status->igtk.flags = data->key_flags; 2434 status->igtk.id = u32_get_bits(data->key_flags, 2435 IWL_WOWLAN_IGTK_BIGTK_IDX_MASK) 2436 + WOWLAN_IGTK_MIN_INDEX; 2437 2438 memcpy(status->igtk.key, data->key, sizeof(data->key)); 2439 2440 /* mac80211 expects big endian for memcmp() to work, convert */ 2441 for (i = 0; i < sizeof(data->ipn); i++) 2442 status->igtk.ipn[i] = data->ipn[sizeof(data->ipn) - i - 1]; 2443 } 2444 2445 static void iwl_mvm_convert_bigtk(struct iwl_wowlan_status_data *status, 2446 const struct iwl_wowlan_igtk_status *data) 2447 { 2448 int data_idx, status_idx = 0; 2449 2450 BUILD_BUG_ON(ARRAY_SIZE(status->bigtk) < WOWLAN_BIGTK_KEYS_NUM); 2451 2452 for (data_idx = 0; data_idx < WOWLAN_BIGTK_KEYS_NUM; data_idx++) { 2453 if (!data[data_idx].key_len) 2454 continue; 2455 2456 status->bigtk[status_idx].len = data[data_idx].key_len; 2457 status->bigtk[status_idx].flags = data[data_idx].key_flags; 2458 status->bigtk[status_idx].id = 2459 u32_get_bits(data[data_idx].key_flags, 2460 IWL_WOWLAN_IGTK_BIGTK_IDX_MASK) 2461 + WOWLAN_BIGTK_MIN_INDEX; 2462 2463 BUILD_BUG_ON(sizeof(status->bigtk[status_idx].key) < 2464 sizeof(data[data_idx].key)); 2465 BUILD_BUG_ON(sizeof(status->bigtk[status_idx].ipn) < 2466 sizeof(data[data_idx].ipn)); 2467 2468 memcpy(status->bigtk[status_idx].key, data[data_idx].key, 2469 sizeof(data[data_idx].key)); 2470 memcpy(status->bigtk[status_idx].ipn, data[data_idx].ipn, 2471 sizeof(data[data_idx].ipn)); 2472 status_idx++; 2473 } 2474 } 2475 2476 static void iwl_mvm_parse_wowlan_info_notif(struct iwl_mvm *mvm, 2477 struct iwl_wowlan_info_notif *data, 2478 struct iwl_wowlan_status_data *status, 2479 u32 len, bool has_mlo_keys) 2480 { 2481 u32 i; 2482 u32 expected_len = sizeof(*data); 2483 2484 if (!data) { 2485 IWL_ERR(mvm, "iwl_wowlan_info_notif data is NULL\n"); 2486 status = NULL; 2487 return; 2488 } 2489 2490 if (has_mlo_keys) 2491 expected_len += (data->num_mlo_link_keys * 2492 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 for (i = 0; i < IWL_MAX_TID_COUNT; i++) 2510 status->qos_seq_ctr[i] = 2511 le16_to_cpu(data->qos_seq_ctr[i]); 2512 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); 2513 status->num_of_gtk_rekeys = 2514 le32_to_cpu(data->num_of_gtk_rekeys); 2515 status->received_beacons = le32_to_cpu(data->received_beacons); 2516 status->tid_tear_down = data->tid_tear_down; 2517 2518 if (has_mlo_keys && data->num_mlo_link_keys) { 2519 status->num_mlo_keys = data->num_mlo_link_keys; 2520 if (IWL_FW_CHECK(mvm, 2521 status->num_mlo_keys > WOWLAN_MAX_MLO_KEYS, 2522 "Too many mlo keys: %d, max %d\n", 2523 status->num_mlo_keys, WOWLAN_MAX_MLO_KEYS)) 2524 status->num_mlo_keys = WOWLAN_MAX_MLO_KEYS; 2525 memcpy(status->mlo_keys, data->mlo_gtks, 2526 status->num_mlo_keys * sizeof(status->mlo_keys[0])); 2527 } 2528 } 2529 2530 static void 2531 iwl_mvm_parse_wowlan_info_notif_v2(struct iwl_mvm *mvm, 2532 struct iwl_wowlan_info_notif_v2 *data, 2533 struct iwl_wowlan_status_data *status, 2534 u32 len) 2535 { 2536 u32 i; 2537 2538 if (!data) { 2539 IWL_ERR(mvm, "iwl_wowlan_info_notif data is NULL\n"); 2540 status = NULL; 2541 return; 2542 } 2543 2544 if (len < sizeof(*data)) { 2545 IWL_ERR(mvm, "Invalid WoWLAN info notification!\n"); 2546 status = NULL; 2547 return; 2548 } 2549 2550 iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc); 2551 iwl_mvm_convert_gtk_v3(status, data->gtk); 2552 iwl_mvm_convert_igtk(status, &data->igtk[0]); 2553 status->replay_ctr = le64_to_cpu(data->replay_ctr); 2554 status->pattern_number = le16_to_cpu(data->pattern_number); 2555 for (i = 0; i < IWL_MAX_TID_COUNT; i++) 2556 status->qos_seq_ctr[i] = 2557 le16_to_cpu(data->qos_seq_ctr[i]); 2558 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); 2559 status->num_of_gtk_rekeys = 2560 le32_to_cpu(data->num_of_gtk_rekeys); 2561 status->received_beacons = le32_to_cpu(data->received_beacons); 2562 status->tid_tear_down = data->tid_tear_down; 2563 } 2564 2565 /* Occasionally, templates would be nice. This is one of those times ... */ 2566 #define iwl_mvm_parse_wowlan_status_common(_ver) \ 2567 static struct iwl_wowlan_status_data * \ 2568 iwl_mvm_parse_wowlan_status_common_ ## _ver(struct iwl_mvm *mvm, \ 2569 struct iwl_wowlan_status_ ##_ver *data,\ 2570 int len) \ 2571 { \ 2572 struct iwl_wowlan_status_data *status; \ 2573 int data_size, i; \ 2574 \ 2575 if (len < sizeof(*data)) { \ 2576 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \ 2577 return NULL; \ 2578 } \ 2579 \ 2580 data_size = ALIGN(le32_to_cpu(data->wake_packet_bufsize), 4); \ 2581 if (len != sizeof(*data) + data_size) { \ 2582 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \ 2583 return NULL; \ 2584 } \ 2585 \ 2586 status = kzalloc(sizeof(*status), GFP_KERNEL); \ 2587 if (!status) \ 2588 return NULL; \ 2589 \ 2590 /* copy all the common fields */ \ 2591 status->replay_ctr = le64_to_cpu(data->replay_ctr); \ 2592 status->pattern_number = le16_to_cpu(data->pattern_number); \ 2593 status->non_qos_seq_ctr = le16_to_cpu(data->non_qos_seq_ctr); \ 2594 for (i = 0; i < 8; i++) \ 2595 status->qos_seq_ctr[i] = \ 2596 le16_to_cpu(data->qos_seq_ctr[i]); \ 2597 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); \ 2598 status->num_of_gtk_rekeys = \ 2599 le32_to_cpu(data->num_of_gtk_rekeys); \ 2600 status->received_beacons = le32_to_cpu(data->received_beacons); \ 2601 status->wake_packet_length = \ 2602 le32_to_cpu(data->wake_packet_length); \ 2603 status->wake_packet_bufsize = \ 2604 le32_to_cpu(data->wake_packet_bufsize); \ 2605 if (status->wake_packet_bufsize) { \ 2606 status->wake_packet = \ 2607 kmemdup(data->wake_packet, \ 2608 status->wake_packet_bufsize, \ 2609 GFP_KERNEL); \ 2610 if (!status->wake_packet) { \ 2611 kfree(status); \ 2612 return NULL; \ 2613 } \ 2614 } else { \ 2615 status->wake_packet = NULL; \ 2616 } \ 2617 \ 2618 return status; \ 2619 } 2620 2621 iwl_mvm_parse_wowlan_status_common(v6) 2622 iwl_mvm_parse_wowlan_status_common(v7) 2623 iwl_mvm_parse_wowlan_status_common(v9) 2624 iwl_mvm_parse_wowlan_status_common(v12) 2625 2626 static struct iwl_wowlan_status_data * 2627 iwl_mvm_send_wowlan_get_status(struct iwl_mvm *mvm, u8 sta_id) 2628 { 2629 struct iwl_wowlan_status_data *status; 2630 struct iwl_wowlan_get_status_cmd get_status_cmd = { 2631 .sta_id = cpu_to_le32(sta_id), 2632 }; 2633 struct iwl_host_cmd cmd = { 2634 .id = WOWLAN_GET_STATUSES, 2635 .flags = CMD_WANT_SKB, 2636 .data = { &get_status_cmd, }, 2637 .len = { sizeof(get_status_cmd), }, 2638 }; 2639 int ret, len; 2640 u8 notif_ver; 2641 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id, 2642 IWL_FW_CMD_VER_UNKNOWN); 2643 2644 if (cmd_ver == IWL_FW_CMD_VER_UNKNOWN) 2645 cmd.len[0] = 0; 2646 2647 lockdep_assert_held(&mvm->mutex); 2648 2649 ret = iwl_mvm_send_cmd(mvm, &cmd); 2650 if (ret) { 2651 IWL_ERR(mvm, "failed to query wakeup status (%d)\n", ret); 2652 return ERR_PTR(ret); 2653 } 2654 2655 len = iwl_rx_packet_payload_len(cmd.resp_pkt); 2656 2657 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */ 2658 notif_ver = iwl_mvm_lookup_wowlan_status_ver(mvm); 2659 2660 if (notif_ver < 7) { 2661 struct iwl_wowlan_status_v6 *v6 = (void *)cmd.resp_pkt->data; 2662 2663 status = iwl_mvm_parse_wowlan_status_common_v6(mvm, v6, len); 2664 if (!status) 2665 goto out_free_resp; 2666 2667 BUILD_BUG_ON(sizeof(v6->gtk.decrypt_key) > 2668 sizeof(status->gtk[0].key)); 2669 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY + 2670 sizeof(v6->gtk.tkip_mic_key) > 2671 sizeof(status->gtk[0].key)); 2672 2673 /* copy GTK info to the right place */ 2674 memcpy(status->gtk[0].key, v6->gtk.decrypt_key, 2675 sizeof(v6->gtk.decrypt_key)); 2676 memcpy(status->gtk[0].key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 2677 v6->gtk.tkip_mic_key, 2678 sizeof(v6->gtk.tkip_mic_key)); 2679 2680 iwl_mvm_convert_key_counters(status, &v6->gtk.rsc.all_tsc_rsc); 2681 2682 /* hardcode the key length to 16 since v6 only supports 16 */ 2683 status->gtk[0].len = 16; 2684 2685 /* 2686 * The key index only uses 2 bits (values 0 to 3) and 2687 * we always set bit 7 which means this is the 2688 * currently used key. 2689 */ 2690 status->gtk[0].flags = v6->gtk.key_index | BIT(7); 2691 } else if (notif_ver == 7) { 2692 struct iwl_wowlan_status_v7 *v7 = (void *)cmd.resp_pkt->data; 2693 2694 status = iwl_mvm_parse_wowlan_status_common_v7(mvm, v7, len); 2695 if (!status) 2696 goto out_free_resp; 2697 2698 iwl_mvm_convert_key_counters(status, &v7->gtk[0].rsc.all_tsc_rsc); 2699 iwl_mvm_convert_gtk_v2(status, &v7->gtk[0]); 2700 iwl_mvm_convert_igtk(status, &v7->igtk[0]); 2701 } else if (notif_ver == 9 || notif_ver == 10 || notif_ver == 11) { 2702 struct iwl_wowlan_status_v9 *v9 = (void *)cmd.resp_pkt->data; 2703 2704 /* these three command versions have same layout and size, the 2705 * difference is only in a few not used (reserved) fields. 2706 */ 2707 status = iwl_mvm_parse_wowlan_status_common_v9(mvm, v9, len); 2708 if (!status) 2709 goto out_free_resp; 2710 2711 iwl_mvm_convert_key_counters(status, &v9->gtk[0].rsc.all_tsc_rsc); 2712 iwl_mvm_convert_gtk_v2(status, &v9->gtk[0]); 2713 iwl_mvm_convert_igtk(status, &v9->igtk[0]); 2714 2715 status->tid_tear_down = v9->tid_tear_down; 2716 } else if (notif_ver == 12) { 2717 struct iwl_wowlan_status_v12 *v12 = (void *)cmd.resp_pkt->data; 2718 2719 status = iwl_mvm_parse_wowlan_status_common_v12(mvm, v12, len); 2720 if (!status) 2721 goto out_free_resp; 2722 2723 iwl_mvm_convert_key_counters_v5(status, &v12->gtk[0].sc); 2724 iwl_mvm_convert_gtk_v3(status, v12->gtk); 2725 iwl_mvm_convert_igtk(status, &v12->igtk[0]); 2726 2727 status->tid_tear_down = v12->tid_tear_down; 2728 } else { 2729 IWL_ERR(mvm, 2730 "Firmware advertises unknown WoWLAN status response %d!\n", 2731 notif_ver); 2732 status = NULL; 2733 } 2734 2735 out_free_resp: 2736 iwl_free_resp(&cmd); 2737 return status; 2738 } 2739 2740 /* releases the MVM mutex */ 2741 static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm, 2742 struct ieee80211_vif *vif, 2743 struct iwl_wowlan_status_data *status) 2744 { 2745 int i; 2746 bool keep = false; 2747 struct iwl_mvm_sta *mvm_ap_sta; 2748 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2749 int link_id = vif->active_links ? __ffs(vif->active_links) : 0; 2750 struct iwl_mvm_vif_link_info *mvm_link = mvmvif->link[link_id]; 2751 2752 if (WARN_ON(!mvm_link)) 2753 goto out_unlock; 2754 2755 if (!status) 2756 goto out_unlock; 2757 2758 IWL_DEBUG_WOWLAN(mvm, "wakeup reason 0x%x\n", 2759 status->wakeup_reasons); 2760 2761 mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, mvm_link->ap_sta_id); 2762 if (!mvm_ap_sta) 2763 goto out_unlock; 2764 2765 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 2766 u16 seq = status->qos_seq_ctr[i]; 2767 /* firmware stores last-used value, we store next value */ 2768 seq += 0x10; 2769 mvm_ap_sta->tid_data[i].seq_number = seq; 2770 } 2771 2772 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000) { 2773 i = mvm->offload_tid; 2774 iwl_trans_set_q_ptrs(mvm->trans, 2775 mvm_ap_sta->tid_data[i].txq_id, 2776 mvm_ap_sta->tid_data[i].seq_number >> 4); 2777 } 2778 2779 iwl_mvm_report_wakeup_reasons(mvm, vif, status); 2780 2781 keep = iwl_mvm_setup_connection_keep(mvm, vif, status); 2782 out_unlock: 2783 mutex_unlock(&mvm->mutex); 2784 return keep; 2785 } 2786 2787 #define ND_QUERY_BUF_LEN (sizeof(struct iwl_scan_offload_profile_match) * \ 2788 IWL_SCAN_MAX_PROFILES) 2789 2790 struct iwl_mvm_nd_results { 2791 u32 matched_profiles; 2792 u8 matches[ND_QUERY_BUF_LEN]; 2793 }; 2794 2795 static int 2796 iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm, 2797 struct iwl_mvm_nd_results *results) 2798 { 2799 struct iwl_scan_offload_match_info *query; 2800 struct iwl_host_cmd cmd = { 2801 .id = SCAN_OFFLOAD_PROFILES_QUERY_CMD, 2802 .flags = CMD_WANT_SKB, 2803 }; 2804 int ret, len; 2805 size_t query_len, matches_len; 2806 int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw); 2807 2808 ret = iwl_mvm_send_cmd(mvm, &cmd); 2809 if (ret) { 2810 IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret); 2811 return ret; 2812 } 2813 2814 if (fw_has_api(&mvm->fw->ucode_capa, 2815 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2816 query_len = sizeof(struct iwl_scan_offload_match_info); 2817 matches_len = sizeof(struct iwl_scan_offload_profile_match) * 2818 max_profiles; 2819 } else { 2820 query_len = sizeof(struct iwl_scan_offload_profiles_query_v1); 2821 matches_len = sizeof(struct iwl_scan_offload_profile_match_v1) * 2822 max_profiles; 2823 } 2824 2825 len = iwl_rx_packet_payload_len(cmd.resp_pkt); 2826 if (len < query_len) { 2827 IWL_ERR(mvm, "Invalid scan offload profiles query response!\n"); 2828 ret = -EIO; 2829 goto out_free_resp; 2830 } 2831 2832 query = (void *)cmd.resp_pkt->data; 2833 2834 results->matched_profiles = le32_to_cpu(query->matched_profiles); 2835 memcpy(results->matches, query->matches, matches_len); 2836 2837 #ifdef CONFIG_IWLWIFI_DEBUGFS 2838 mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done); 2839 #endif 2840 2841 out_free_resp: 2842 iwl_free_resp(&cmd); 2843 return ret; 2844 } 2845 2846 static int iwl_mvm_query_num_match_chans(struct iwl_mvm *mvm, 2847 struct iwl_mvm_nd_results *results, 2848 int idx) 2849 { 2850 int n_chans = 0, i; 2851 2852 if (fw_has_api(&mvm->fw->ucode_capa, 2853 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2854 struct iwl_scan_offload_profile_match *matches = 2855 (void *)results->matches; 2856 2857 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; i++) 2858 n_chans += hweight8(matches[idx].matching_channels[i]); 2859 } else { 2860 struct iwl_scan_offload_profile_match_v1 *matches = 2861 (void *)results->matches; 2862 2863 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1; i++) 2864 n_chans += hweight8(matches[idx].matching_channels[i]); 2865 } 2866 2867 return n_chans; 2868 } 2869 2870 static void iwl_mvm_query_set_freqs(struct iwl_mvm *mvm, 2871 struct iwl_mvm_nd_results *results, 2872 struct cfg80211_wowlan_nd_match *match, 2873 int idx) 2874 { 2875 int i; 2876 2877 if (fw_has_api(&mvm->fw->ucode_capa, 2878 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2879 struct iwl_scan_offload_profile_match *matches = 2880 (void *)results->matches; 2881 2882 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; i++) 2883 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8))) 2884 match->channels[match->n_channels++] = 2885 mvm->nd_channels[i]->center_freq; 2886 } else { 2887 struct iwl_scan_offload_profile_match_v1 *matches = 2888 (void *)results->matches; 2889 2890 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1 * 8; i++) 2891 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8))) 2892 match->channels[match->n_channels++] = 2893 mvm->nd_channels[i]->center_freq; 2894 } 2895 } 2896 2897 /** 2898 * enum iwl_d3_notif - d3 notifications 2899 * @IWL_D3_NOTIF_WOWLAN_INFO: WOWLAN_INFO_NOTIF was received 2900 * @IWL_D3_NOTIF_WOWLAN_WAKE_PKT: WOWLAN_WAKE_PKT_NOTIF was received 2901 * @IWL_D3_NOTIF_PROT_OFFLOAD: PROT_OFFLOAD_NOTIF was received 2902 * @IWL_D3_ND_MATCH_INFO: OFFLOAD_MATCH_INFO_NOTIF was received 2903 * @IWL_D3_NOTIF_D3_END_NOTIF: D3_END_NOTIF was received 2904 */ 2905 enum iwl_d3_notif { 2906 IWL_D3_NOTIF_WOWLAN_INFO = BIT(0), 2907 IWL_D3_NOTIF_WOWLAN_WAKE_PKT = BIT(1), 2908 IWL_D3_NOTIF_PROT_OFFLOAD = BIT(2), 2909 IWL_D3_ND_MATCH_INFO = BIT(3), 2910 IWL_D3_NOTIF_D3_END_NOTIF = BIT(4) 2911 }; 2912 2913 /* manage d3 resume data */ 2914 struct iwl_d3_data { 2915 struct iwl_wowlan_status_data *status; 2916 bool test; 2917 u32 d3_end_flags; 2918 u32 notif_expected; /* bitmap - see &enum iwl_d3_notif */ 2919 u32 notif_received; /* bitmap - see &enum iwl_d3_notif */ 2920 struct iwl_mvm_nd_results *nd_results; 2921 bool nd_results_valid; 2922 }; 2923 2924 static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm, 2925 struct ieee80211_vif *vif, 2926 struct iwl_d3_data *d3_data) 2927 { 2928 struct cfg80211_wowlan_nd_info *net_detect = NULL; 2929 struct cfg80211_wowlan_wakeup wakeup = { 2930 .pattern_idx = -1, 2931 }; 2932 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; 2933 unsigned long matched_profiles; 2934 u32 reasons = 0; 2935 int i, n_matches, ret; 2936 2937 if (WARN_ON(!d3_data || !d3_data->status)) 2938 goto out; 2939 2940 reasons = d3_data->status->wakeup_reasons; 2941 2942 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 2943 wakeup.rfkill_release = true; 2944 2945 if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) 2946 goto out; 2947 2948 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2949 WOWLAN_INFO_NOTIFICATION, 0)) { 2950 IWL_INFO(mvm, "Query FW for ND results\n"); 2951 ret = iwl_mvm_netdetect_query_results(mvm, d3_data->nd_results); 2952 2953 } else { 2954 IWL_INFO(mvm, "Notification based ND results\n"); 2955 ret = d3_data->nd_results_valid ? 0 : -1; 2956 } 2957 2958 if (ret || !d3_data->nd_results->matched_profiles) { 2959 wakeup_report = NULL; 2960 goto out; 2961 } 2962 2963 matched_profiles = d3_data->nd_results->matched_profiles; 2964 if (mvm->n_nd_match_sets) { 2965 n_matches = hweight_long(matched_profiles); 2966 } else { 2967 IWL_ERR(mvm, "no net detect match information available\n"); 2968 n_matches = 0; 2969 } 2970 2971 net_detect = kzalloc(struct_size(net_detect, matches, n_matches), 2972 GFP_KERNEL); 2973 if (!net_detect || !n_matches) 2974 goto out_report_nd; 2975 2976 for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) { 2977 struct cfg80211_wowlan_nd_match *match; 2978 int idx, n_channels = 0; 2979 2980 n_channels = iwl_mvm_query_num_match_chans(mvm, 2981 d3_data->nd_results, 2982 i); 2983 2984 match = kzalloc(struct_size(match, channels, n_channels), 2985 GFP_KERNEL); 2986 if (!match) 2987 goto out_report_nd; 2988 2989 net_detect->matches[net_detect->n_matches++] = match; 2990 2991 /* We inverted the order of the SSIDs in the scan 2992 * request, so invert the index here. 2993 */ 2994 idx = mvm->n_nd_match_sets - i - 1; 2995 match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len; 2996 memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid, 2997 match->ssid.ssid_len); 2998 2999 if (mvm->n_nd_channels < n_channels) 3000 continue; 3001 3002 iwl_mvm_query_set_freqs(mvm, d3_data->nd_results, match, i); 3003 } 3004 3005 out_report_nd: 3006 wakeup.net_detect = net_detect; 3007 out: 3008 iwl_mvm_free_nd(mvm); 3009 3010 mutex_unlock(&mvm->mutex); 3011 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); 3012 3013 if (net_detect) { 3014 for (i = 0; i < net_detect->n_matches; i++) 3015 kfree(net_detect->matches[i]); 3016 kfree(net_detect); 3017 } 3018 } 3019 3020 static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac, 3021 struct ieee80211_vif *vif) 3022 { 3023 /* skip the one we keep connection on */ 3024 if (data == vif) 3025 return; 3026 3027 if (vif->type == NL80211_IFTYPE_STATION) 3028 ieee80211_resume_disconnect(vif); 3029 } 3030 3031 static bool iwl_mvm_rt_status(struct iwl_trans *trans, u32 base, u32 *err_id) 3032 { 3033 struct error_table_start { 3034 /* cf. struct iwl_error_event_table */ 3035 u32 valid; 3036 __le32 err_id; 3037 } err_info; 3038 3039 if (!base) 3040 return false; 3041 3042 iwl_trans_read_mem_bytes(trans, base, 3043 &err_info, sizeof(err_info)); 3044 if (err_info.valid && err_id) 3045 *err_id = le32_to_cpu(err_info.err_id); 3046 3047 return !!err_info.valid; 3048 } 3049 3050 static bool iwl_mvm_check_rt_status(struct iwl_mvm *mvm, 3051 struct ieee80211_vif *vif) 3052 { 3053 u32 err_id; 3054 3055 /* check for lmac1 error */ 3056 if (iwl_mvm_rt_status(mvm->trans, 3057 mvm->trans->dbg.lmac_error_event_table[0], 3058 &err_id)) { 3059 if (err_id == RF_KILL_INDICATOR_FOR_WOWLAN && vif) { 3060 struct cfg80211_wowlan_wakeup wakeup = { 3061 .rfkill_release = true, 3062 }; 3063 ieee80211_report_wowlan_wakeup(vif, &wakeup, 3064 GFP_KERNEL); 3065 } 3066 return true; 3067 } 3068 3069 /* check if we have lmac2 set and check for error */ 3070 if (iwl_mvm_rt_status(mvm->trans, 3071 mvm->trans->dbg.lmac_error_event_table[1], NULL)) 3072 return true; 3073 3074 /* check for umac error */ 3075 if (iwl_mvm_rt_status(mvm->trans, 3076 mvm->trans->dbg.umac_error_event_table, NULL)) 3077 return true; 3078 3079 return false; 3080 } 3081 3082 /* 3083 * This function assumes: 3084 * 1. The mutex is already held. 3085 * 2. The callee functions unlock the mutex. 3086 */ 3087 static bool 3088 iwl_mvm_choose_query_wakeup_reasons(struct iwl_mvm *mvm, 3089 struct ieee80211_vif *vif, 3090 struct iwl_d3_data *d3_data) 3091 { 3092 lockdep_assert_held(&mvm->mutex); 3093 3094 /* if FW uses status notification, status shouldn't be NULL here */ 3095 if (!d3_data->status) { 3096 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3097 u8 sta_id = mvm->net_detect ? IWL_MVM_INVALID_STA : 3098 mvmvif->deflink.ap_sta_id; 3099 3100 /* bug - FW with MLO has status notification */ 3101 WARN_ON(ieee80211_vif_is_mld(vif)); 3102 3103 d3_data->status = iwl_mvm_send_wowlan_get_status(mvm, sta_id); 3104 } 3105 3106 if (mvm->net_detect) { 3107 iwl_mvm_query_netdetect_reasons(mvm, vif, d3_data); 3108 } else { 3109 bool keep = iwl_mvm_query_wakeup_reasons(mvm, vif, 3110 d3_data->status); 3111 3112 #ifdef CONFIG_IWLWIFI_DEBUGFS 3113 if (keep) 3114 mvm->keep_vif = vif; 3115 #endif 3116 3117 return keep; 3118 } 3119 return false; 3120 } 3121 3122 #define IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT (IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET | \ 3123 IWL_WOWLAN_WAKEUP_BY_PATTERN | \ 3124 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN |\ 3125 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN_WILDCARD |\ 3126 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN |\ 3127 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN_WILDCARD) 3128 3129 static int iwl_mvm_wowlan_store_wake_pkt(struct iwl_mvm *mvm, 3130 struct iwl_wowlan_wake_pkt_notif *notif, 3131 struct iwl_wowlan_status_data *status, 3132 u32 len) 3133 { 3134 u32 data_size, packet_len = le32_to_cpu(notif->wake_packet_length); 3135 3136 if (len < sizeof(*notif)) { 3137 IWL_ERR(mvm, "Invalid WoWLAN wake packet notification!\n"); 3138 return -EIO; 3139 } 3140 3141 if (WARN_ON(!status)) { 3142 IWL_ERR(mvm, "Got wake packet notification but wowlan status data is NULL\n"); 3143 return -EIO; 3144 } 3145 3146 if (WARN_ON(!(status->wakeup_reasons & 3147 IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT))) { 3148 IWL_ERR(mvm, "Got wakeup packet but wakeup reason is %x\n", 3149 status->wakeup_reasons); 3150 return -EIO; 3151 } 3152 3153 data_size = len - offsetof(struct iwl_wowlan_wake_pkt_notif, wake_packet); 3154 3155 /* data_size got the padding from the notification, remove it. */ 3156 if (packet_len < data_size) 3157 data_size = packet_len; 3158 3159 status->wake_packet = kmemdup(notif->wake_packet, data_size, 3160 GFP_ATOMIC); 3161 3162 if (!status->wake_packet) 3163 return -ENOMEM; 3164 3165 status->wake_packet_length = packet_len; 3166 status->wake_packet_bufsize = data_size; 3167 3168 return 0; 3169 } 3170 3171 static void iwl_mvm_nd_match_info_handler(struct iwl_mvm *mvm, 3172 struct iwl_d3_data *d3_data, 3173 struct iwl_scan_offload_match_info *notif, 3174 u32 len) 3175 { 3176 struct iwl_wowlan_status_data *status = d3_data->status; 3177 struct ieee80211_vif *vif = iwl_mvm_get_bss_vif(mvm); 3178 struct iwl_mvm_nd_results *results = d3_data->nd_results; 3179 size_t i, matches_len = sizeof(struct iwl_scan_offload_profile_match) * 3180 iwl_umac_scan_get_max_profiles(mvm->fw); 3181 3182 if (IS_ERR_OR_NULL(vif)) 3183 return; 3184 3185 if (len < sizeof(struct iwl_scan_offload_match_info)) { 3186 IWL_ERR(mvm, "Invalid scan match info notification\n"); 3187 return; 3188 } 3189 3190 if (!mvm->net_detect) { 3191 IWL_ERR(mvm, "Unexpected scan match info notification\n"); 3192 return; 3193 } 3194 3195 if (!status || status->wakeup_reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) { 3196 IWL_ERR(mvm, 3197 "Ignore scan match info notification: no reason\n"); 3198 return; 3199 } 3200 3201 #ifdef CONFIG_IWLWIFI_DEBUGFS 3202 mvm->last_netdetect_scans = le32_to_cpu(notif->n_scans_done); 3203 #endif 3204 3205 results->matched_profiles = le32_to_cpu(notif->matched_profiles); 3206 IWL_INFO(mvm, "number of matched profiles=%u\n", 3207 results->matched_profiles); 3208 3209 if (results->matched_profiles) { 3210 memcpy(results->matches, notif->matches, matches_len); 3211 d3_data->nd_results_valid = true; 3212 } 3213 3214 /* no scan should be active at this point */ 3215 mvm->scan_status = 0; 3216 for (i = 0; i < mvm->max_scans; i++) 3217 mvm->scan_uid_status[i] = 0; 3218 } 3219 3220 static bool iwl_mvm_wait_d3_notif(struct iwl_notif_wait_data *notif_wait, 3221 struct iwl_rx_packet *pkt, void *data) 3222 { 3223 struct iwl_mvm *mvm = 3224 container_of(notif_wait, struct iwl_mvm, notif_wait); 3225 struct iwl_d3_data *d3_data = data; 3226 u32 len = iwl_rx_packet_payload_len(pkt); 3227 int ret; 3228 int wowlan_info_ver = iwl_fw_lookup_notif_ver(mvm->fw, 3229 PROT_OFFLOAD_GROUP, 3230 WOWLAN_INFO_NOTIFICATION, 3231 IWL_FW_CMD_VER_UNKNOWN); 3232 3233 3234 switch (WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) { 3235 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION): { 3236 3237 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_INFO) { 3238 /* We might get two notifications due to dual bss */ 3239 IWL_DEBUG_WOWLAN(mvm, 3240 "Got additional wowlan info notification\n"); 3241 break; 3242 } 3243 3244 if (wowlan_info_ver < 2) { 3245 struct iwl_wowlan_info_notif_v1 *notif_v1 = 3246 (void *)pkt->data; 3247 struct iwl_wowlan_info_notif_v2 *notif_v2; 3248 3249 notif_v2 = kmemdup(notif_v1, sizeof(*notif_v2), GFP_ATOMIC); 3250 3251 if (!notif_v2) 3252 return false; 3253 3254 notif_v2->tid_tear_down = notif_v1->tid_tear_down; 3255 notif_v2->station_id = notif_v1->station_id; 3256 memset_after(notif_v2, 0, station_id); 3257 iwl_mvm_parse_wowlan_info_notif_v2(mvm, notif_v2, 3258 d3_data->status, 3259 len); 3260 kfree(notif_v2); 3261 3262 } else if (wowlan_info_ver == 2) { 3263 struct iwl_wowlan_info_notif_v2 *notif_v2 = 3264 (void *)pkt->data; 3265 3266 iwl_mvm_parse_wowlan_info_notif_v2(mvm, notif_v2, 3267 d3_data->status, 3268 len); 3269 } else { 3270 struct iwl_wowlan_info_notif *notif = 3271 (void *)pkt->data; 3272 3273 iwl_mvm_parse_wowlan_info_notif(mvm, notif, 3274 d3_data->status, len, 3275 wowlan_info_ver > 3); 3276 } 3277 3278 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_INFO; 3279 3280 if (d3_data->status && 3281 d3_data->status->wakeup_reasons & IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT) 3282 /* We are supposed to get also wake packet notif */ 3283 d3_data->notif_expected |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT; 3284 3285 break; 3286 } 3287 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION): { 3288 struct iwl_wowlan_wake_pkt_notif *notif = (void *)pkt->data; 3289 3290 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_WAKE_PKT) { 3291 /* We shouldn't get two wake packet notifications */ 3292 IWL_ERR(mvm, 3293 "Got additional wowlan wake packet notification\n"); 3294 } else { 3295 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT; 3296 len = iwl_rx_packet_payload_len(pkt); 3297 ret = iwl_mvm_wowlan_store_wake_pkt(mvm, notif, 3298 d3_data->status, 3299 len); 3300 if (ret) 3301 IWL_ERR(mvm, 3302 "Can't parse WOWLAN_WAKE_PKT_NOTIFICATION\n"); 3303 } 3304 3305 break; 3306 } 3307 case WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF): { 3308 struct iwl_scan_offload_match_info *notif = (void *)pkt->data; 3309 3310 if (d3_data->notif_received & IWL_D3_ND_MATCH_INFO) { 3311 IWL_ERR(mvm, 3312 "Got additional netdetect match info\n"); 3313 break; 3314 } 3315 3316 d3_data->notif_received |= IWL_D3_ND_MATCH_INFO; 3317 3318 /* explicitly set this in the 'expected' as well */ 3319 d3_data->notif_expected |= IWL_D3_ND_MATCH_INFO; 3320 3321 len = iwl_rx_packet_payload_len(pkt); 3322 iwl_mvm_nd_match_info_handler(mvm, d3_data, notif, len); 3323 break; 3324 } 3325 case WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION): { 3326 struct iwl_mvm_d3_end_notif *notif = (void *)pkt->data; 3327 3328 d3_data->d3_end_flags = __le32_to_cpu(notif->flags); 3329 d3_data->notif_received |= IWL_D3_NOTIF_D3_END_NOTIF; 3330 3331 break; 3332 } 3333 default: 3334 WARN_ON(1); 3335 } 3336 3337 return d3_data->notif_received == d3_data->notif_expected; 3338 } 3339 3340 static int iwl_mvm_resume_firmware(struct iwl_mvm *mvm, bool test) 3341 { 3342 int ret; 3343 enum iwl_d3_status d3_status; 3344 struct iwl_host_cmd cmd = { 3345 .id = D0I3_END_CMD, 3346 .flags = CMD_WANT_SKB | CMD_SEND_IN_D3, 3347 }; 3348 bool reset = fw_has_capa(&mvm->fw->ucode_capa, 3349 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 3350 3351 ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, !reset); 3352 if (ret) 3353 return ret; 3354 3355 if (d3_status != IWL_D3_STATUS_ALIVE) { 3356 IWL_INFO(mvm, "Device was reset during suspend\n"); 3357 return -ENOENT; 3358 } 3359 3360 /* 3361 * We should trigger resume flow using command only for 22000 family 3362 * AX210 and above don't need the command since they have 3363 * the doorbell interrupt. 3364 */ 3365 if (mvm->trans->trans_cfg->device_family <= IWL_DEVICE_FAMILY_22000 && 3366 fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_D0I3_END_FIRST)) { 3367 ret = iwl_mvm_send_cmd(mvm, &cmd); 3368 if (ret < 0) 3369 IWL_ERR(mvm, "Failed to send D0I3_END_CMD first (%d)\n", 3370 ret); 3371 } 3372 3373 return ret; 3374 } 3375 3376 #define IWL_MVM_D3_NOTIF_TIMEOUT (HZ / 3) 3377 3378 static int iwl_mvm_d3_notif_wait(struct iwl_mvm *mvm, 3379 struct iwl_d3_data *d3_data) 3380 { 3381 static const u16 d3_resume_notif[] = { 3382 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION), 3383 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION), 3384 WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF), 3385 WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION) 3386 }; 3387 static const u16 d3_fast_resume_notif[] = { 3388 WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION) 3389 }; 3390 struct iwl_notification_wait wait_d3_notif; 3391 int ret; 3392 3393 if (mvm->fast_resume) 3394 iwl_init_notification_wait(&mvm->notif_wait, &wait_d3_notif, 3395 d3_fast_resume_notif, 3396 ARRAY_SIZE(d3_fast_resume_notif), 3397 iwl_mvm_wait_d3_notif, d3_data); 3398 else 3399 iwl_init_notification_wait(&mvm->notif_wait, &wait_d3_notif, 3400 d3_resume_notif, 3401 ARRAY_SIZE(d3_resume_notif), 3402 iwl_mvm_wait_d3_notif, d3_data); 3403 3404 ret = iwl_mvm_resume_firmware(mvm, d3_data->test); 3405 if (ret) { 3406 iwl_remove_notification(&mvm->notif_wait, &wait_d3_notif); 3407 return ret; 3408 } 3409 3410 return iwl_wait_notification(&mvm->notif_wait, &wait_d3_notif, 3411 IWL_MVM_D3_NOTIF_TIMEOUT); 3412 } 3413 3414 static inline bool iwl_mvm_d3_resume_notif_based(struct iwl_mvm *mvm) 3415 { 3416 return iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3417 WOWLAN_INFO_NOTIFICATION, 0) && 3418 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3419 WOWLAN_WAKE_PKT_NOTIFICATION, 0) && 3420 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3421 D3_END_NOTIFICATION, 0); 3422 } 3423 3424 static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test) 3425 { 3426 struct ieee80211_vif *vif = NULL; 3427 int ret = 1; 3428 struct iwl_mvm_nd_results results = {}; 3429 struct iwl_d3_data d3_data = { 3430 .test = test, 3431 .notif_expected = 3432 IWL_D3_NOTIF_WOWLAN_INFO | 3433 IWL_D3_NOTIF_D3_END_NOTIF, 3434 .nd_results_valid = false, 3435 .nd_results = &results, 3436 }; 3437 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 3438 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 3439 bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa, 3440 IWL_UCODE_TLV_CAPA_D0I3_END_FIRST); 3441 bool resume_notif_based = iwl_mvm_d3_resume_notif_based(mvm); 3442 bool keep = false; 3443 3444 mutex_lock(&mvm->mutex); 3445 3446 /* Apparently, the device went away and device_powered_off() was called, 3447 * don't even try to read the rt_status, the device is currently 3448 * inaccessible. 3449 */ 3450 if (!test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) { 3451 IWL_INFO(mvm, 3452 "Can't resume, device_powered_off() was called during wowlan\n"); 3453 goto err; 3454 } 3455 3456 mvm->last_reset_or_resume_time_jiffies = jiffies; 3457 3458 /* get the BSS vif pointer again */ 3459 vif = iwl_mvm_get_bss_vif(mvm); 3460 if (IS_ERR_OR_NULL(vif)) 3461 goto err; 3462 3463 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt); 3464 3465 if (iwl_mvm_check_rt_status(mvm, vif)) { 3466 set_bit(STATUS_FW_ERROR, &mvm->trans->status); 3467 iwl_mvm_dump_nic_error_log(mvm); 3468 iwl_dbg_tlv_time_point(&mvm->fwrt, 3469 IWL_FW_INI_TIME_POINT_FW_ASSERT, NULL); 3470 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert, 3471 false, 0); 3472 ret = 1; 3473 goto err; 3474 } 3475 3476 if (resume_notif_based) { 3477 d3_data.status = kzalloc(sizeof(*d3_data.status), GFP_KERNEL); 3478 if (!d3_data.status) { 3479 IWL_ERR(mvm, "Failed to allocate wowlan status\n"); 3480 ret = -ENOMEM; 3481 goto err; 3482 } 3483 3484 ret = iwl_mvm_d3_notif_wait(mvm, &d3_data); 3485 if (ret) 3486 goto err; 3487 } else { 3488 ret = iwl_mvm_resume_firmware(mvm, test); 3489 if (ret < 0) 3490 goto err; 3491 } 3492 3493 iwl_mvm_unblock_esr(mvm, vif, IWL_MVM_ESR_BLOCKED_WOWLAN); 3494 3495 /* after the successful handshake, we're out of D3 */ 3496 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED; 3497 3498 /* when reset is required we can't send these following commands */ 3499 if (d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE) 3500 goto query_wakeup_reasons; 3501 3502 /* 3503 * Query the current location and source from the D3 firmware so we 3504 * can play it back when we re-intiailize the D0 firmware 3505 */ 3506 iwl_mvm_update_changed_regdom(mvm); 3507 3508 /* Re-configure PPAG settings */ 3509 iwl_mvm_ppag_send_cmd(mvm); 3510 3511 if (!unified_image) 3512 /* Re-configure default SAR profile */ 3513 iwl_mvm_sar_select_profile(mvm, 1, 1); 3514 3515 if (mvm->net_detect && unified_image) { 3516 /* If this is a non-unified image, we restart the FW, 3517 * so no need to stop the netdetect scan. If that 3518 * fails, continue and try to get the wake-up reasons, 3519 * but trigger a HW restart by keeping a failure code 3520 * in ret. 3521 */ 3522 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT, 3523 false); 3524 } 3525 3526 query_wakeup_reasons: 3527 keep = iwl_mvm_choose_query_wakeup_reasons(mvm, vif, &d3_data); 3528 /* has unlocked the mutex, so skip that */ 3529 goto out; 3530 3531 err: 3532 mutex_unlock(&mvm->mutex); 3533 out: 3534 if (d3_data.status) 3535 kfree(d3_data.status->wake_packet); 3536 kfree(d3_data.status); 3537 iwl_mvm_free_nd(mvm); 3538 3539 if (!d3_data.test && !mvm->net_detect) 3540 ieee80211_iterate_active_interfaces_mtx(mvm->hw, 3541 IEEE80211_IFACE_ITER_NORMAL, 3542 iwl_mvm_d3_disconnect_iter, 3543 keep ? vif : NULL); 3544 3545 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 3546 3547 /* no need to reset the device in unified images, if successful */ 3548 if (unified_image && !ret) { 3549 /* nothing else to do if we already sent D0I3_END_CMD */ 3550 if (d0i3_first) 3551 return 0; 3552 3553 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3554 D3_END_NOTIFICATION, 0)) { 3555 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL); 3556 if (!ret) 3557 return 0; 3558 } else if (!(d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)) { 3559 return 0; 3560 } 3561 } 3562 3563 /* 3564 * Reconfigure the device in one of the following cases: 3565 * 1. We are not using a unified image 3566 * 2. We are using a unified image but had an error while exiting D3 3567 */ 3568 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); 3569 3570 /* regardless of what happened, we're now out of D3 */ 3571 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED; 3572 3573 return 1; 3574 } 3575 3576 int iwl_mvm_resume(struct ieee80211_hw *hw) 3577 { 3578 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3579 int ret; 3580 3581 ret = __iwl_mvm_resume(mvm, false); 3582 3583 iwl_mvm_resume_tcm(mvm); 3584 3585 iwl_fw_runtime_resume(&mvm->fwrt); 3586 3587 return ret; 3588 } 3589 3590 void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled) 3591 { 3592 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3593 3594 device_set_wakeup_enable(mvm->trans->dev, enabled); 3595 } 3596 3597 void iwl_mvm_fast_suspend(struct iwl_mvm *mvm) 3598 { 3599 struct iwl_d3_manager_config d3_cfg_cmd_data = {}; 3600 int ret; 3601 3602 lockdep_assert_held(&mvm->mutex); 3603 3604 IWL_DEBUG_WOWLAN(mvm, "Starting fast suspend flow\n"); 3605 3606 mvm->fast_resume = true; 3607 set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 3608 3609 WARN_ON(iwl_mvm_power_update_device(mvm)); 3610 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_D3; 3611 ret = iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD, CMD_SEND_IN_D3, 3612 sizeof(d3_cfg_cmd_data), &d3_cfg_cmd_data); 3613 if (ret) 3614 IWL_ERR(mvm, 3615 "fast suspend: couldn't send D3_CONFIG_CMD %d\n", ret); 3616 3617 WARN_ON(iwl_mvm_power_update_mac(mvm)); 3618 3619 ret = iwl_trans_d3_suspend(mvm->trans, false, false); 3620 if (ret) 3621 IWL_ERR(mvm, "fast suspend: trans_d3_suspend failed %d\n", ret); 3622 } 3623 3624 int iwl_mvm_fast_resume(struct iwl_mvm *mvm) 3625 { 3626 struct iwl_d3_data d3_data = { 3627 .notif_expected = 3628 IWL_D3_NOTIF_D3_END_NOTIF, 3629 }; 3630 int ret; 3631 3632 lockdep_assert_held(&mvm->mutex); 3633 3634 IWL_DEBUG_WOWLAN(mvm, "Starting the fast resume flow\n"); 3635 3636 mvm->last_reset_or_resume_time_jiffies = jiffies; 3637 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt); 3638 3639 if (iwl_mvm_check_rt_status(mvm, NULL)) { 3640 set_bit(STATUS_FW_ERROR, &mvm->trans->status); 3641 iwl_mvm_dump_nic_error_log(mvm); 3642 iwl_dbg_tlv_time_point(&mvm->fwrt, 3643 IWL_FW_INI_TIME_POINT_FW_ASSERT, NULL); 3644 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert, 3645 false, 0); 3646 return -ENODEV; 3647 } 3648 ret = iwl_mvm_d3_notif_wait(mvm, &d3_data); 3649 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 3650 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED; 3651 mvm->fast_resume = false; 3652 3653 if (ret) 3654 IWL_ERR(mvm, "Couldn't get the d3 notif %d\n", ret); 3655 3656 return ret; 3657 } 3658 3659 #ifdef CONFIG_IWLWIFI_DEBUGFS 3660 static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file) 3661 { 3662 struct iwl_mvm *mvm = inode->i_private; 3663 int err; 3664 3665 if (mvm->d3_test_active) 3666 return -EBUSY; 3667 3668 file->private_data = inode->i_private; 3669 3670 iwl_mvm_pause_tcm(mvm, true); 3671 3672 iwl_fw_runtime_suspend(&mvm->fwrt); 3673 3674 /* start pseudo D3 */ 3675 rtnl_lock(); 3676 wiphy_lock(mvm->hw->wiphy); 3677 err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true); 3678 wiphy_unlock(mvm->hw->wiphy); 3679 rtnl_unlock(); 3680 if (err > 0) 3681 err = -EINVAL; 3682 if (err) 3683 return err; 3684 3685 mvm->d3_test_active = true; 3686 mvm->keep_vif = NULL; 3687 return 0; 3688 } 3689 3690 static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf, 3691 size_t count, loff_t *ppos) 3692 { 3693 struct iwl_mvm *mvm = file->private_data; 3694 unsigned long end = jiffies + 60 * HZ; 3695 u32 pme_asserted; 3696 3697 while (true) { 3698 /* read pme_ptr if available */ 3699 if (mvm->d3_test_pme_ptr) { 3700 pme_asserted = iwl_trans_read_mem32(mvm->trans, 3701 mvm->d3_test_pme_ptr); 3702 if (pme_asserted) 3703 break; 3704 } 3705 3706 #if defined(__linux__) 3707 if (msleep_interruptible(100)) 3708 #elif defined(__FreeBSD__) 3709 if (linux_msleep_interruptible(100)) 3710 #endif 3711 break; 3712 3713 if (time_is_before_jiffies(end)) { 3714 IWL_ERR(mvm, 3715 "ending pseudo-D3 with timeout after ~60 seconds\n"); 3716 return -ETIMEDOUT; 3717 } 3718 } 3719 3720 return 0; 3721 } 3722 3723 static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac, 3724 struct ieee80211_vif *vif) 3725 { 3726 /* skip the one we keep connection on */ 3727 if (_data == vif) 3728 return; 3729 3730 if (vif->type == NL80211_IFTYPE_STATION) 3731 ieee80211_connection_loss(vif); 3732 } 3733 3734 static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file) 3735 { 3736 struct iwl_mvm *mvm = inode->i_private; 3737 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 3738 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 3739 3740 mvm->d3_test_active = false; 3741 3742 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt); 3743 3744 rtnl_lock(); 3745 wiphy_lock(mvm->hw->wiphy); 3746 __iwl_mvm_resume(mvm, true); 3747 wiphy_unlock(mvm->hw->wiphy); 3748 rtnl_unlock(); 3749 3750 iwl_mvm_resume_tcm(mvm); 3751 3752 iwl_fw_runtime_resume(&mvm->fwrt); 3753 3754 iwl_abort_notification_waits(&mvm->notif_wait); 3755 if (!unified_image) { 3756 int remaining_time = 10; 3757 3758 ieee80211_restart_hw(mvm->hw); 3759 3760 /* wait for restart and disconnect all interfaces */ 3761 while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 3762 remaining_time > 0) { 3763 remaining_time--; 3764 #if defined(__linux__) 3765 msleep(1000); 3766 #elif defined(__FreeBSD__) 3767 linux_msleep(1000); 3768 #endif 3769 } 3770 3771 if (remaining_time == 0) 3772 IWL_ERR(mvm, "Timed out waiting for HW restart!\n"); 3773 } 3774 3775 ieee80211_iterate_active_interfaces_atomic( 3776 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 3777 iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif); 3778 3779 return 0; 3780 } 3781 3782 const struct file_operations iwl_dbgfs_d3_test_ops = { 3783 .llseek = no_llseek, 3784 .open = iwl_mvm_d3_test_open, 3785 .read = iwl_mvm_d3_test_read, 3786 .release = iwl_mvm_d3_test_release, 3787 }; 3788 #endif 3789