1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2014, 2018-2023 Intel Corporation 4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH 5 * Copyright (C) 2016-2017 Intel Deutschland GmbH 6 */ 7 #include <linux/etherdevice.h> 8 #include <linux/ip.h> 9 #include <linux/fs.h> 10 #include <net/cfg80211.h> 11 #include <net/ipv6.h> 12 #include <net/tcp.h> 13 #include <net/addrconf.h> 14 #include "iwl-modparams.h" 15 #include "fw-api.h" 16 #include "mvm.h" 17 #include "fw/img.h" 18 19 void iwl_mvm_set_rekey_data(struct ieee80211_hw *hw, 20 struct ieee80211_vif *vif, 21 struct cfg80211_gtk_rekey_data *data) 22 { 23 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 24 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 25 26 mutex_lock(&mvm->mutex); 27 28 mvmvif->rekey_data.kek_len = data->kek_len; 29 mvmvif->rekey_data.kck_len = data->kck_len; 30 memcpy(mvmvif->rekey_data.kek, data->kek, data->kek_len); 31 memcpy(mvmvif->rekey_data.kck, data->kck, data->kck_len); 32 mvmvif->rekey_data.akm = data->akm & 0xFF; 33 mvmvif->rekey_data.replay_ctr = 34 cpu_to_le64(be64_to_cpup((const __be64 *)data->replay_ctr)); 35 mvmvif->rekey_data.valid = true; 36 37 mutex_unlock(&mvm->mutex); 38 } 39 40 #if IS_ENABLED(CONFIG_IPV6) 41 void iwl_mvm_ipv6_addr_change(struct ieee80211_hw *hw, 42 struct ieee80211_vif *vif, 43 struct inet6_dev *idev) 44 { 45 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 46 struct inet6_ifaddr *ifa; 47 int idx = 0; 48 49 memset(mvmvif->tentative_addrs, 0, sizeof(mvmvif->tentative_addrs)); 50 51 read_lock_bh(&idev->lock); 52 list_for_each_entry(ifa, &idev->addr_list, if_list) { 53 mvmvif->target_ipv6_addrs[idx] = ifa->addr; 54 if (ifa->flags & IFA_F_TENTATIVE) 55 __set_bit(idx, mvmvif->tentative_addrs); 56 idx++; 57 if (idx >= IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_MAX) 58 break; 59 } 60 read_unlock_bh(&idev->lock); 61 62 mvmvif->num_target_ipv6_addrs = idx; 63 } 64 #endif 65 66 void iwl_mvm_set_default_unicast_key(struct ieee80211_hw *hw, 67 struct ieee80211_vif *vif, int idx) 68 { 69 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 70 71 mvmvif->tx_key_idx = idx; 72 } 73 74 static void iwl_mvm_convert_p1k(u16 *p1k, __le16 *out) 75 { 76 int i; 77 78 for (i = 0; i < IWL_P1K_SIZE; i++) 79 out[i] = cpu_to_le16(p1k[i]); 80 } 81 82 static const u8 *iwl_mvm_find_max_pn(struct ieee80211_key_conf *key, 83 struct iwl_mvm_key_pn *ptk_pn, 84 struct ieee80211_key_seq *seq, 85 int tid, int queues) 86 { 87 const u8 *ret = seq->ccmp.pn; 88 int i; 89 90 /* get the PN from mac80211, used on the default queue */ 91 ieee80211_get_key_rx_seq(key, tid, seq); 92 93 /* and use the internal data for the other queues */ 94 for (i = 1; i < queues; i++) { 95 const u8 *tmp = ptk_pn->q[i].pn[tid]; 96 97 if (memcmp(ret, tmp, IEEE80211_CCMP_PN_LEN) <= 0) 98 ret = tmp; 99 } 100 101 return ret; 102 } 103 104 struct wowlan_key_reprogram_data { 105 bool error; 106 int wep_key_idx; 107 }; 108 109 static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw, 110 struct ieee80211_vif *vif, 111 struct ieee80211_sta *sta, 112 struct ieee80211_key_conf *key, 113 void *_data) 114 { 115 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 116 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 117 struct wowlan_key_reprogram_data *data = _data; 118 int ret; 119 120 switch (key->cipher) { 121 case WLAN_CIPHER_SUITE_WEP40: 122 case WLAN_CIPHER_SUITE_WEP104: { /* hack it for now */ 123 struct { 124 struct iwl_mvm_wep_key_cmd wep_key_cmd; 125 struct iwl_mvm_wep_key wep_key; 126 } __packed wkc = { 127 .wep_key_cmd.mac_id_n_color = 128 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 129 mvmvif->color)), 130 .wep_key_cmd.num_keys = 1, 131 /* firmware sets STA_KEY_FLG_WEP_13BYTES */ 132 .wep_key_cmd.decryption_type = STA_KEY_FLG_WEP, 133 .wep_key.key_index = key->keyidx, 134 .wep_key.key_size = key->keylen, 135 }; 136 137 /* 138 * This will fail -- the key functions don't set support 139 * pairwise WEP keys. However, that's better than silently 140 * failing WoWLAN. Or maybe not? 141 */ 142 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) 143 break; 144 145 memcpy(&wkc.wep_key.key[3], key->key, key->keylen); 146 if (key->keyidx == mvmvif->tx_key_idx) { 147 /* TX key must be at offset 0 */ 148 wkc.wep_key.key_offset = 0; 149 } else { 150 /* others start at 1 */ 151 data->wep_key_idx++; 152 wkc.wep_key.key_offset = data->wep_key_idx; 153 } 154 155 mutex_lock(&mvm->mutex); 156 ret = iwl_mvm_send_cmd_pdu(mvm, WEP_KEY, 0, sizeof(wkc), &wkc); 157 data->error = ret != 0; 158 159 mvm->ptk_ivlen = key->iv_len; 160 mvm->ptk_icvlen = key->icv_len; 161 mvm->gtk_ivlen = key->iv_len; 162 mvm->gtk_icvlen = key->icv_len; 163 mutex_unlock(&mvm->mutex); 164 165 /* don't upload key again */ 166 return; 167 } 168 default: 169 data->error = true; 170 return; 171 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 172 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 173 return; 174 case WLAN_CIPHER_SUITE_AES_CMAC: 175 /* 176 * Ignore CMAC keys -- the WoWLAN firmware doesn't support them 177 * but we also shouldn't abort suspend due to that. It does have 178 * support for the IGTK key renewal, but doesn't really use the 179 * IGTK for anything. This means we could spuriously wake up or 180 * be deauthenticated, but that was considered acceptable. 181 */ 182 return; 183 case WLAN_CIPHER_SUITE_TKIP: 184 case WLAN_CIPHER_SUITE_CCMP: 185 case WLAN_CIPHER_SUITE_GCMP: 186 case WLAN_CIPHER_SUITE_GCMP_256: 187 break; 188 } 189 190 mutex_lock(&mvm->mutex); 191 /* 192 * The D3 firmware hardcodes the key offset 0 as the key it 193 * uses to transmit packets to the AP, i.e. the PTK. 194 */ 195 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) { 196 mvm->ptk_ivlen = key->iv_len; 197 mvm->ptk_icvlen = key->icv_len; 198 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 0); 199 } else { 200 /* 201 * firmware only supports TSC/RSC for a single key, 202 * so if there are multiple keep overwriting them 203 * with new ones -- this relies on mac80211 doing 204 * list_add_tail(). 205 */ 206 mvm->gtk_ivlen = key->iv_len; 207 mvm->gtk_icvlen = key->icv_len; 208 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 1); 209 } 210 mutex_unlock(&mvm->mutex); 211 data->error = ret != 0; 212 } 213 214 struct wowlan_key_rsc_tsc_data { 215 struct iwl_wowlan_rsc_tsc_params_cmd_v4 *rsc_tsc; 216 bool have_rsc_tsc; 217 }; 218 219 static void iwl_mvm_wowlan_get_rsc_tsc_data(struct ieee80211_hw *hw, 220 struct ieee80211_vif *vif, 221 struct ieee80211_sta *sta, 222 struct ieee80211_key_conf *key, 223 void *_data) 224 { 225 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 226 struct wowlan_key_rsc_tsc_data *data = _data; 227 struct aes_sc *aes_sc; 228 struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL; 229 struct ieee80211_key_seq seq; 230 int i; 231 232 switch (key->cipher) { 233 default: 234 break; 235 case WLAN_CIPHER_SUITE_TKIP: 236 if (sta) { 237 u64 pn64; 238 239 tkip_sc = 240 data->rsc_tsc->params.all_tsc_rsc.tkip.unicast_rsc; 241 tkip_tx_sc = 242 &data->rsc_tsc->params.all_tsc_rsc.tkip.tsc; 243 244 pn64 = atomic64_read(&key->tx_pn); 245 tkip_tx_sc->iv16 = cpu_to_le16(TKIP_PN_TO_IV16(pn64)); 246 tkip_tx_sc->iv32 = cpu_to_le32(TKIP_PN_TO_IV32(pn64)); 247 } else { 248 tkip_sc = 249 data->rsc_tsc->params.all_tsc_rsc.tkip.multicast_rsc; 250 } 251 252 /* 253 * For non-QoS this relies on the fact that both the uCode and 254 * mac80211 use TID 0 (as they need to to avoid replay attacks) 255 * for checking the IV in the frames. 256 */ 257 for (i = 0; i < IWL_NUM_RSC; i++) { 258 ieee80211_get_key_rx_seq(key, i, &seq); 259 tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16); 260 tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32); 261 } 262 263 data->have_rsc_tsc = true; 264 break; 265 case WLAN_CIPHER_SUITE_CCMP: 266 case WLAN_CIPHER_SUITE_GCMP: 267 case WLAN_CIPHER_SUITE_GCMP_256: 268 if (sta) { 269 struct aes_sc *aes_tx_sc; 270 u64 pn64; 271 272 aes_sc = 273 data->rsc_tsc->params.all_tsc_rsc.aes.unicast_rsc; 274 aes_tx_sc = 275 &data->rsc_tsc->params.all_tsc_rsc.aes.tsc; 276 277 pn64 = atomic64_read(&key->tx_pn); 278 aes_tx_sc->pn = cpu_to_le64(pn64); 279 } else { 280 aes_sc = 281 data->rsc_tsc->params.all_tsc_rsc.aes.multicast_rsc; 282 } 283 284 /* 285 * For non-QoS this relies on the fact that both the uCode and 286 * mac80211/our RX code use TID 0 for checking the PN. 287 */ 288 if (sta && iwl_mvm_has_new_rx_api(mvm)) { 289 struct iwl_mvm_sta *mvmsta; 290 struct iwl_mvm_key_pn *ptk_pn; 291 const u8 *pn; 292 293 mvmsta = iwl_mvm_sta_from_mac80211(sta); 294 rcu_read_lock(); 295 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]); 296 if (WARN_ON(!ptk_pn)) { 297 rcu_read_unlock(); 298 break; 299 } 300 301 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 302 pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i, 303 mvm->trans->num_rx_queues); 304 aes_sc[i].pn = cpu_to_le64((u64)pn[5] | 305 ((u64)pn[4] << 8) | 306 ((u64)pn[3] << 16) | 307 ((u64)pn[2] << 24) | 308 ((u64)pn[1] << 32) | 309 ((u64)pn[0] << 40)); 310 } 311 312 rcu_read_unlock(); 313 } else { 314 for (i = 0; i < IWL_NUM_RSC; i++) { 315 u8 *pn = seq.ccmp.pn; 316 317 ieee80211_get_key_rx_seq(key, i, &seq); 318 aes_sc[i].pn = cpu_to_le64((u64)pn[5] | 319 ((u64)pn[4] << 8) | 320 ((u64)pn[3] << 16) | 321 ((u64)pn[2] << 24) | 322 ((u64)pn[1] << 32) | 323 ((u64)pn[0] << 40)); 324 } 325 } 326 data->have_rsc_tsc = true; 327 break; 328 } 329 } 330 331 struct wowlan_key_rsc_v5_data { 332 struct iwl_wowlan_rsc_tsc_params_cmd *rsc; 333 bool have_rsc; 334 int gtks; 335 int gtk_ids[4]; 336 }; 337 338 static void iwl_mvm_wowlan_get_rsc_v5_data(struct ieee80211_hw *hw, 339 struct ieee80211_vif *vif, 340 struct ieee80211_sta *sta, 341 struct ieee80211_key_conf *key, 342 void *_data) 343 { 344 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 345 struct wowlan_key_rsc_v5_data *data = _data; 346 struct ieee80211_key_seq seq; 347 __le64 *rsc; 348 int i; 349 350 /* only for ciphers that can be PTK/GTK */ 351 switch (key->cipher) { 352 default: 353 return; 354 case WLAN_CIPHER_SUITE_TKIP: 355 case WLAN_CIPHER_SUITE_CCMP: 356 case WLAN_CIPHER_SUITE_GCMP: 357 case WLAN_CIPHER_SUITE_GCMP_256: 358 break; 359 } 360 361 if (sta) { 362 rsc = data->rsc->ucast_rsc; 363 } else { 364 if (WARN_ON(data->gtks >= ARRAY_SIZE(data->gtk_ids))) 365 return; 366 data->gtk_ids[data->gtks] = key->keyidx; 367 rsc = data->rsc->mcast_rsc[data->gtks % 2]; 368 if (WARN_ON(key->keyidx >= 369 ARRAY_SIZE(data->rsc->mcast_key_id_map))) 370 return; 371 data->rsc->mcast_key_id_map[key->keyidx] = data->gtks % 2; 372 if (data->gtks >= 2) { 373 int prev = data->gtks - 2; 374 int prev_idx = data->gtk_ids[prev]; 375 376 data->rsc->mcast_key_id_map[prev_idx] = 377 IWL_MCAST_KEY_MAP_INVALID; 378 } 379 data->gtks++; 380 } 381 382 switch (key->cipher) { 383 default: 384 WARN_ON(1); 385 break; 386 case WLAN_CIPHER_SUITE_TKIP: 387 388 /* 389 * For non-QoS this relies on the fact that both the uCode and 390 * mac80211 use TID 0 (as they need to to avoid replay attacks) 391 * for checking the IV in the frames. 392 */ 393 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 394 ieee80211_get_key_rx_seq(key, i, &seq); 395 396 rsc[i] = cpu_to_le64(((u64)seq.tkip.iv32 << 16) | 397 seq.tkip.iv16); 398 } 399 400 data->have_rsc = true; 401 break; 402 case WLAN_CIPHER_SUITE_CCMP: 403 case WLAN_CIPHER_SUITE_GCMP: 404 case WLAN_CIPHER_SUITE_GCMP_256: 405 /* 406 * For non-QoS this relies on the fact that both the uCode and 407 * mac80211/our RX code use TID 0 for checking the PN. 408 */ 409 if (sta) { 410 struct iwl_mvm_sta *mvmsta; 411 struct iwl_mvm_key_pn *ptk_pn; 412 const u8 *pn; 413 414 mvmsta = iwl_mvm_sta_from_mac80211(sta); 415 rcu_read_lock(); 416 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]); 417 if (WARN_ON(!ptk_pn)) { 418 rcu_read_unlock(); 419 break; 420 } 421 422 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 423 pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i, 424 mvm->trans->num_rx_queues); 425 rsc[i] = cpu_to_le64((u64)pn[5] | 426 ((u64)pn[4] << 8) | 427 ((u64)pn[3] << 16) | 428 ((u64)pn[2] << 24) | 429 ((u64)pn[1] << 32) | 430 ((u64)pn[0] << 40)); 431 } 432 433 rcu_read_unlock(); 434 } else { 435 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 436 u8 *pn = seq.ccmp.pn; 437 438 ieee80211_get_key_rx_seq(key, i, &seq); 439 rsc[i] = cpu_to_le64((u64)pn[5] | 440 ((u64)pn[4] << 8) | 441 ((u64)pn[3] << 16) | 442 ((u64)pn[2] << 24) | 443 ((u64)pn[1] << 32) | 444 ((u64)pn[0] << 40)); 445 } 446 } 447 data->have_rsc = true; 448 break; 449 } 450 } 451 452 static int iwl_mvm_wowlan_config_rsc_tsc(struct iwl_mvm *mvm, 453 struct ieee80211_vif *vif) 454 { 455 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 456 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TSC_RSC_PARAM, 457 IWL_FW_CMD_VER_UNKNOWN); 458 int ret; 459 460 if (ver == 5) { 461 struct wowlan_key_rsc_v5_data data = {}; 462 int i; 463 464 data.rsc = kzalloc(sizeof(*data.rsc), GFP_KERNEL); 465 if (!data.rsc) 466 return -ENOMEM; 467 468 for (i = 0; i < ARRAY_SIZE(data.rsc->mcast_key_id_map); i++) 469 data.rsc->mcast_key_id_map[i] = 470 IWL_MCAST_KEY_MAP_INVALID; 471 data.rsc->sta_id = cpu_to_le32(mvmvif->deflink.ap_sta_id); 472 473 ieee80211_iter_keys(mvm->hw, vif, 474 iwl_mvm_wowlan_get_rsc_v5_data, 475 &data); 476 477 if (data.have_rsc) 478 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM, 479 CMD_ASYNC, sizeof(*data.rsc), 480 data.rsc); 481 else 482 ret = 0; 483 kfree(data.rsc); 484 } else if (ver == 4 || ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN) { 485 struct wowlan_key_rsc_tsc_data data = {}; 486 int size; 487 488 data.rsc_tsc = kzalloc(sizeof(*data.rsc_tsc), GFP_KERNEL); 489 if (!data.rsc_tsc) 490 return -ENOMEM; 491 492 if (ver == 4) { 493 size = sizeof(*data.rsc_tsc); 494 data.rsc_tsc->sta_id = 495 cpu_to_le32(mvmvif->deflink.ap_sta_id); 496 } else { 497 /* ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN */ 498 size = sizeof(data.rsc_tsc->params); 499 } 500 501 ieee80211_iter_keys(mvm->hw, vif, 502 iwl_mvm_wowlan_get_rsc_tsc_data, 503 &data); 504 505 if (data.have_rsc_tsc) 506 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM, 507 CMD_ASYNC, size, 508 data.rsc_tsc); 509 else 510 ret = 0; 511 kfree(data.rsc_tsc); 512 } else { 513 ret = 0; 514 WARN_ON_ONCE(1); 515 } 516 517 return ret; 518 } 519 520 struct wowlan_key_tkip_data { 521 struct iwl_wowlan_tkip_params_cmd tkip; 522 bool have_tkip_keys; 523 }; 524 525 static void iwl_mvm_wowlan_get_tkip_data(struct ieee80211_hw *hw, 526 struct ieee80211_vif *vif, 527 struct ieee80211_sta *sta, 528 struct ieee80211_key_conf *key, 529 void *_data) 530 { 531 struct wowlan_key_tkip_data *data = _data; 532 struct iwl_p1k_cache *rx_p1ks; 533 u8 *rx_mic_key; 534 struct ieee80211_key_seq seq; 535 u32 cur_rx_iv32 = 0; 536 u16 p1k[IWL_P1K_SIZE]; 537 int i; 538 539 switch (key->cipher) { 540 default: 541 break; 542 case WLAN_CIPHER_SUITE_TKIP: 543 if (sta) { 544 u64 pn64; 545 546 rx_p1ks = data->tkip.rx_uni; 547 548 pn64 = atomic64_read(&key->tx_pn); 549 550 ieee80211_get_tkip_p1k_iv(key, TKIP_PN_TO_IV32(pn64), 551 p1k); 552 iwl_mvm_convert_p1k(p1k, data->tkip.tx.p1k); 553 554 memcpy(data->tkip.mic_keys.tx, 555 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], 556 IWL_MIC_KEY_SIZE); 557 558 rx_mic_key = data->tkip.mic_keys.rx_unicast; 559 } else { 560 rx_p1ks = data->tkip.rx_multi; 561 rx_mic_key = data->tkip.mic_keys.rx_mcast; 562 } 563 564 for (i = 0; i < IWL_NUM_RSC; i++) { 565 ieee80211_get_key_rx_seq(key, i, &seq); 566 /* wrapping isn't allowed, AP must rekey */ 567 if (seq.tkip.iv32 > cur_rx_iv32) 568 cur_rx_iv32 = seq.tkip.iv32; 569 } 570 571 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid, 572 cur_rx_iv32, p1k); 573 iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k); 574 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid, 575 cur_rx_iv32 + 1, p1k); 576 iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k); 577 578 memcpy(rx_mic_key, 579 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], 580 IWL_MIC_KEY_SIZE); 581 582 data->have_tkip_keys = true; 583 break; 584 } 585 } 586 587 struct wowlan_key_gtk_type_iter { 588 struct iwl_wowlan_kek_kck_material_cmd_v4 *kek_kck_cmd; 589 }; 590 591 static void iwl_mvm_wowlan_gtk_type_iter(struct ieee80211_hw *hw, 592 struct ieee80211_vif *vif, 593 struct ieee80211_sta *sta, 594 struct ieee80211_key_conf *key, 595 void *_data) 596 { 597 struct wowlan_key_gtk_type_iter *data = _data; 598 __le32 *cipher = NULL; 599 600 if (key->keyidx == 4 || key->keyidx == 5) 601 cipher = &data->kek_kck_cmd->igtk_cipher; 602 if (key->keyidx == 6 || key->keyidx == 7) 603 cipher = &data->kek_kck_cmd->bigtk_cipher; 604 605 switch (key->cipher) { 606 default: 607 return; 608 case WLAN_CIPHER_SUITE_TKIP: 609 if (!sta) 610 data->kek_kck_cmd->gtk_cipher = 611 cpu_to_le32(STA_KEY_FLG_TKIP); 612 return; 613 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 614 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 615 if (cipher) 616 *cipher = cpu_to_le32(STA_KEY_FLG_GCMP); 617 return; 618 case WLAN_CIPHER_SUITE_AES_CMAC: 619 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 620 if (cipher) 621 *cipher = cpu_to_le32(STA_KEY_FLG_CCM); 622 return; 623 case WLAN_CIPHER_SUITE_CCMP: 624 if (!sta) 625 data->kek_kck_cmd->gtk_cipher = 626 cpu_to_le32(STA_KEY_FLG_CCM); 627 return; 628 case WLAN_CIPHER_SUITE_GCMP: 629 case WLAN_CIPHER_SUITE_GCMP_256: 630 if (!sta) 631 data->kek_kck_cmd->gtk_cipher = 632 cpu_to_le32(STA_KEY_FLG_GCMP); 633 return; 634 } 635 } 636 637 static int iwl_mvm_send_patterns_v1(struct iwl_mvm *mvm, 638 struct cfg80211_wowlan *wowlan) 639 { 640 struct iwl_wowlan_patterns_cmd_v1 *pattern_cmd; 641 struct iwl_host_cmd cmd = { 642 .id = WOWLAN_PATTERNS, 643 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 644 }; 645 int i, err; 646 647 if (!wowlan->n_patterns) 648 return 0; 649 650 cmd.len[0] = struct_size(pattern_cmd, patterns, wowlan->n_patterns); 651 652 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL); 653 if (!pattern_cmd) 654 return -ENOMEM; 655 656 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns); 657 658 for (i = 0; i < wowlan->n_patterns; i++) { 659 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8); 660 661 memcpy(&pattern_cmd->patterns[i].mask, 662 wowlan->patterns[i].mask, mask_len); 663 memcpy(&pattern_cmd->patterns[i].pattern, 664 wowlan->patterns[i].pattern, 665 wowlan->patterns[i].pattern_len); 666 pattern_cmd->patterns[i].mask_size = mask_len; 667 pattern_cmd->patterns[i].pattern_size = 668 wowlan->patterns[i].pattern_len; 669 } 670 671 cmd.data[0] = pattern_cmd; 672 err = iwl_mvm_send_cmd(mvm, &cmd); 673 kfree(pattern_cmd); 674 return err; 675 } 676 677 static int iwl_mvm_send_patterns(struct iwl_mvm *mvm, 678 struct ieee80211_vif *vif, 679 struct cfg80211_wowlan *wowlan) 680 { 681 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 682 struct iwl_wowlan_patterns_cmd *pattern_cmd; 683 struct iwl_host_cmd cmd = { 684 .id = WOWLAN_PATTERNS, 685 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 686 }; 687 int i, err; 688 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id, 689 IWL_FW_CMD_VER_UNKNOWN); 690 691 if (!wowlan->n_patterns) 692 return 0; 693 694 cmd.len[0] = sizeof(*pattern_cmd) + 695 wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern_v2); 696 697 pattern_cmd = kzalloc(cmd.len[0], GFP_KERNEL); 698 if (!pattern_cmd) 699 return -ENOMEM; 700 701 pattern_cmd->n_patterns = wowlan->n_patterns; 702 if (ver >= 3) 703 pattern_cmd->sta_id = mvmvif->deflink.ap_sta_id; 704 705 for (i = 0; i < wowlan->n_patterns; i++) { 706 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8); 707 708 pattern_cmd->patterns[i].pattern_type = 709 WOWLAN_PATTERN_TYPE_BITMASK; 710 711 memcpy(&pattern_cmd->patterns[i].u.bitmask.mask, 712 wowlan->patterns[i].mask, mask_len); 713 memcpy(&pattern_cmd->patterns[i].u.bitmask.pattern, 714 wowlan->patterns[i].pattern, 715 wowlan->patterns[i].pattern_len); 716 pattern_cmd->patterns[i].u.bitmask.mask_size = mask_len; 717 pattern_cmd->patterns[i].u.bitmask.pattern_size = 718 wowlan->patterns[i].pattern_len; 719 } 720 721 cmd.data[0] = pattern_cmd; 722 err = iwl_mvm_send_cmd(mvm, &cmd); 723 kfree(pattern_cmd); 724 return err; 725 } 726 727 static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 728 struct ieee80211_sta *ap_sta) 729 { 730 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 731 struct ieee80211_chanctx_conf *ctx; 732 u8 chains_static, chains_dynamic; 733 struct cfg80211_chan_def chandef; 734 int ret, i; 735 struct iwl_binding_cmd_v1 binding_cmd = {}; 736 struct iwl_time_quota_cmd quota_cmd = {}; 737 struct iwl_time_quota_data *quota; 738 u32 status; 739 740 if (WARN_ON_ONCE(iwl_mvm_is_cdb_supported(mvm))) 741 return -EINVAL; 742 743 /* add back the PHY */ 744 if (WARN_ON(!mvmvif->deflink.phy_ctxt)) 745 return -EINVAL; 746 747 rcu_read_lock(); 748 ctx = rcu_dereference(vif->bss_conf.chanctx_conf); 749 if (WARN_ON(!ctx)) { 750 rcu_read_unlock(); 751 return -EINVAL; 752 } 753 chandef = ctx->def; 754 chains_static = ctx->rx_chains_static; 755 chains_dynamic = ctx->rx_chains_dynamic; 756 rcu_read_unlock(); 757 758 ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->deflink.phy_ctxt, &chandef, 759 chains_static, chains_dynamic); 760 if (ret) 761 return ret; 762 763 /* add back the MAC */ 764 mvmvif->uploaded = false; 765 766 if (WARN_ON(!vif->cfg.assoc)) 767 return -EINVAL; 768 769 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 770 if (ret) 771 return ret; 772 773 /* add back binding - XXX refactor? */ 774 binding_cmd.id_and_color = 775 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id, 776 mvmvif->deflink.phy_ctxt->color)); 777 binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD); 778 binding_cmd.phy = 779 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id, 780 mvmvif->deflink.phy_ctxt->color)); 781 binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 782 mvmvif->color)); 783 for (i = 1; i < MAX_MACS_IN_BINDING; i++) 784 binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID); 785 786 status = 0; 787 ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD, 788 IWL_BINDING_CMD_SIZE_V1, &binding_cmd, 789 &status); 790 if (ret) { 791 IWL_ERR(mvm, "Failed to add binding: %d\n", ret); 792 return ret; 793 } 794 795 if (status) { 796 IWL_ERR(mvm, "Binding command failed: %u\n", status); 797 return -EIO; 798 } 799 800 ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false, 0); 801 if (ret) 802 return ret; 803 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->deflink.ap_sta_id], 804 ap_sta); 805 806 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 807 if (ret) 808 return ret; 809 810 /* and some quota */ 811 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, 0); 812 quota->id_and_color = 813 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id, 814 mvmvif->deflink.phy_ctxt->color)); 815 quota->quota = cpu_to_le32(IWL_MVM_MAX_QUOTA); 816 quota->max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA); 817 818 for (i = 1; i < MAX_BINDINGS; i++) { 819 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, i); 820 quota->id_and_color = cpu_to_le32(FW_CTXT_INVALID); 821 } 822 823 ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0, 824 iwl_mvm_quota_cmd_size(mvm), "a_cmd); 825 if (ret) 826 IWL_ERR(mvm, "Failed to send quota: %d\n", ret); 827 828 if (iwl_mvm_is_lar_supported(mvm) && iwl_mvm_init_fw_regd(mvm)) 829 IWL_ERR(mvm, "Failed to initialize D3 LAR information\n"); 830 831 return 0; 832 } 833 834 static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm, 835 struct ieee80211_vif *vif) 836 { 837 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 838 struct iwl_nonqos_seq_query_cmd query_cmd = { 839 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET), 840 .mac_id_n_color = 841 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 842 mvmvif->color)), 843 }; 844 struct iwl_host_cmd cmd = { 845 .id = NON_QOS_TX_COUNTER_CMD, 846 .flags = CMD_WANT_SKB, 847 }; 848 int err; 849 u32 size; 850 851 cmd.data[0] = &query_cmd; 852 cmd.len[0] = sizeof(query_cmd); 853 854 err = iwl_mvm_send_cmd(mvm, &cmd); 855 if (err) 856 return err; 857 858 size = iwl_rx_packet_payload_len(cmd.resp_pkt); 859 if (size < sizeof(__le16)) { 860 err = -EINVAL; 861 } else { 862 err = le16_to_cpup((__le16 *)cmd.resp_pkt->data); 863 /* firmware returns next, not last-used seqno */ 864 err = (u16) (err - 0x10); 865 } 866 867 iwl_free_resp(&cmd); 868 return err; 869 } 870 871 void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 872 { 873 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 874 struct iwl_nonqos_seq_query_cmd query_cmd = { 875 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET), 876 .mac_id_n_color = 877 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 878 mvmvif->color)), 879 .value = cpu_to_le16(mvmvif->seqno), 880 }; 881 882 /* return if called during restart, not resume from D3 */ 883 if (!mvmvif->seqno_valid) 884 return; 885 886 mvmvif->seqno_valid = false; 887 888 if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0, 889 sizeof(query_cmd), &query_cmd)) 890 IWL_ERR(mvm, "failed to set non-QoS seqno\n"); 891 } 892 893 static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm) 894 { 895 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 896 897 iwl_mvm_stop_device(mvm); 898 /* 899 * Set the HW restart bit -- this is mostly true as we're 900 * going to load new firmware and reprogram that, though 901 * the reprogramming is going to be manual to avoid adding 902 * all the MACs that aren't support. 903 * We don't have to clear up everything though because the 904 * reprogramming is manual. When we resume, we'll actually 905 * go through a proper restart sequence again to switch 906 * back to the runtime firmware image. 907 */ 908 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 909 910 /* the fw is reset, so all the keys are cleared */ 911 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); 912 913 mvm->ptk_ivlen = 0; 914 mvm->ptk_icvlen = 0; 915 mvm->ptk_ivlen = 0; 916 mvm->ptk_icvlen = 0; 917 918 return iwl_mvm_load_d3_fw(mvm); 919 } 920 921 static int 922 iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm, 923 struct cfg80211_wowlan *wowlan, 924 struct iwl_wowlan_config_cmd *wowlan_config_cmd, 925 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif, 926 struct ieee80211_sta *ap_sta) 927 { 928 struct iwl_mvm_sta *mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta); 929 930 /* TODO: wowlan_config_cmd->wowlan_ba_teardown_tids */ 931 932 wowlan_config_cmd->is_11n_connection = 933 ap_sta->deflink.ht_cap.ht_supported; 934 wowlan_config_cmd->flags = ENABLE_L3_FILTERING | 935 ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING; 936 937 if (iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_CONFIGURATION, 0) < 6) { 938 /* Query the last used seqno and set it */ 939 int ret = iwl_mvm_get_last_nonqos_seq(mvm, vif); 940 941 if (ret < 0) 942 return ret; 943 944 wowlan_config_cmd->non_qos_seq = cpu_to_le16(ret); 945 } 946 947 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, wowlan_config_cmd); 948 949 if (wowlan->disconnect) 950 wowlan_config_cmd->wakeup_filter |= 951 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS | 952 IWL_WOWLAN_WAKEUP_LINK_CHANGE); 953 if (wowlan->magic_pkt) 954 wowlan_config_cmd->wakeup_filter |= 955 cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET); 956 if (wowlan->gtk_rekey_failure) 957 wowlan_config_cmd->wakeup_filter |= 958 cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL); 959 if (wowlan->eap_identity_req) 960 wowlan_config_cmd->wakeup_filter |= 961 cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ); 962 if (wowlan->four_way_handshake) 963 wowlan_config_cmd->wakeup_filter |= 964 cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE); 965 if (wowlan->n_patterns) 966 wowlan_config_cmd->wakeup_filter |= 967 cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH); 968 969 if (wowlan->rfkill_release) 970 wowlan_config_cmd->wakeup_filter |= 971 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT); 972 973 if (wowlan->tcp) { 974 /* 975 * Set the "link change" (really "link lost") flag as well 976 * since that implies losing the TCP connection. 977 */ 978 wowlan_config_cmd->wakeup_filter |= 979 cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS | 980 IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE | 981 IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET | 982 IWL_WOWLAN_WAKEUP_LINK_CHANGE); 983 } 984 985 if (wowlan->any) { 986 wowlan_config_cmd->wakeup_filter |= 987 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS | 988 IWL_WOWLAN_WAKEUP_LINK_CHANGE | 989 IWL_WOWLAN_WAKEUP_RX_FRAME | 990 IWL_WOWLAN_WAKEUP_BCN_FILTERING); 991 } 992 993 return 0; 994 } 995 996 static int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm, 997 struct ieee80211_vif *vif) 998 { 999 bool unified = fw_has_capa(&mvm->fw->ucode_capa, 1000 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1001 struct wowlan_key_reprogram_data key_data = {}; 1002 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1003 int ret; 1004 u8 cmd_ver; 1005 size_t cmd_size; 1006 1007 if (!unified) { 1008 /* 1009 * if we have to configure keys, call ieee80211_iter_keys(), 1010 * as we need non-atomic context in order to take the 1011 * required locks. 1012 */ 1013 /* 1014 * Note that currently we don't use CMD_ASYNC in the iterator. 1015 * In case of key_data.configure_keys, all the configured 1016 * commands are SYNC, and iwl_mvm_wowlan_program_keys() will 1017 * take care of locking/unlocking mvm->mutex. 1018 */ 1019 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_program_keys, 1020 &key_data); 1021 1022 if (key_data.error) 1023 return -EIO; 1024 } 1025 1026 ret = iwl_mvm_wowlan_config_rsc_tsc(mvm, vif); 1027 if (ret) 1028 return ret; 1029 1030 if (!fw_has_api(&mvm->fw->ucode_capa, 1031 IWL_UCODE_TLV_API_TKIP_MIC_KEYS)) { 1032 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TKIP_PARAM, 1033 IWL_FW_CMD_VER_UNKNOWN); 1034 struct wowlan_key_tkip_data tkip_data = {}; 1035 int size; 1036 1037 if (ver == 2) { 1038 size = sizeof(tkip_data.tkip); 1039 tkip_data.tkip.sta_id = 1040 cpu_to_le32(mvmvif->deflink.ap_sta_id); 1041 } else if (ver == 1 || ver == IWL_FW_CMD_VER_UNKNOWN) { 1042 size = sizeof(struct iwl_wowlan_tkip_params_cmd_ver_1); 1043 } else { 1044 WARN_ON_ONCE(1); 1045 return -EINVAL; 1046 } 1047 1048 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_get_tkip_data, 1049 &tkip_data); 1050 1051 if (tkip_data.have_tkip_keys) { 1052 /* send relevant data according to CMD version */ 1053 ret = iwl_mvm_send_cmd_pdu(mvm, 1054 WOWLAN_TKIP_PARAM, 1055 CMD_ASYNC, size, 1056 &tkip_data.tkip); 1057 if (ret) 1058 return ret; 1059 } 1060 } 1061 1062 /* configure rekey data only if offloaded rekey is supported (d3) */ 1063 if (mvmvif->rekey_data.valid) { 1064 struct iwl_wowlan_kek_kck_material_cmd_v4 kek_kck_cmd = {}; 1065 struct iwl_wowlan_kek_kck_material_cmd_v4 *_kek_kck_cmd = 1066 &kek_kck_cmd; 1067 struct wowlan_key_gtk_type_iter gtk_type_data = { 1068 .kek_kck_cmd = _kek_kck_cmd, 1069 }; 1070 1071 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, 1072 WOWLAN_KEK_KCK_MATERIAL, 1073 IWL_FW_CMD_VER_UNKNOWN); 1074 if (WARN_ON(cmd_ver != 2 && cmd_ver != 3 && cmd_ver != 4 && 1075 cmd_ver != IWL_FW_CMD_VER_UNKNOWN)) 1076 return -EINVAL; 1077 1078 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_gtk_type_iter, 1079 >k_type_data); 1080 1081 memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck, 1082 mvmvif->rekey_data.kck_len); 1083 kek_kck_cmd.kck_len = cpu_to_le16(mvmvif->rekey_data.kck_len); 1084 memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek, 1085 mvmvif->rekey_data.kek_len); 1086 kek_kck_cmd.kek_len = cpu_to_le16(mvmvif->rekey_data.kek_len); 1087 kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr; 1088 kek_kck_cmd.akm = cpu_to_le32(mvmvif->rekey_data.akm); 1089 kek_kck_cmd.sta_id = cpu_to_le32(mvmvif->deflink.ap_sta_id); 1090 1091 if (cmd_ver == 4) { 1092 cmd_size = sizeof(struct iwl_wowlan_kek_kck_material_cmd_v4); 1093 } else { 1094 if (cmd_ver == 3) 1095 cmd_size = 1096 sizeof(struct iwl_wowlan_kek_kck_material_cmd_v3); 1097 else 1098 cmd_size = 1099 sizeof(struct iwl_wowlan_kek_kck_material_cmd_v2); 1100 /* skip the sta_id at the beginning */ 1101 _kek_kck_cmd = (void *) 1102 ((u8 *)_kek_kck_cmd + sizeof(kek_kck_cmd.sta_id)); 1103 } 1104 1105 IWL_DEBUG_WOWLAN(mvm, "setting akm %d\n", 1106 mvmvif->rekey_data.akm); 1107 1108 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_KEK_KCK_MATERIAL, 1109 CMD_ASYNC, cmd_size, _kek_kck_cmd); 1110 if (ret) 1111 return ret; 1112 } 1113 1114 return 0; 1115 } 1116 1117 static int 1118 iwl_mvm_wowlan_config(struct iwl_mvm *mvm, 1119 struct cfg80211_wowlan *wowlan, 1120 struct iwl_wowlan_config_cmd *wowlan_config_cmd, 1121 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif, 1122 struct ieee80211_sta *ap_sta) 1123 { 1124 int ret; 1125 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 1126 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1127 1128 mvm->offload_tid = wowlan_config_cmd->offloading_tid; 1129 1130 if (!unified_image) { 1131 ret = iwl_mvm_switch_to_d3(mvm); 1132 if (ret) 1133 return ret; 1134 1135 ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta); 1136 if (ret) 1137 return ret; 1138 } 1139 1140 /* 1141 * This needs to be unlocked due to lock ordering 1142 * constraints. Since we're in the suspend path 1143 * that isn't really a problem though. 1144 */ 1145 mutex_unlock(&mvm->mutex); 1146 ret = iwl_mvm_wowlan_config_key_params(mvm, vif); 1147 mutex_lock(&mvm->mutex); 1148 if (ret) 1149 return ret; 1150 1151 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0, 1152 sizeof(*wowlan_config_cmd), 1153 wowlan_config_cmd); 1154 if (ret) 1155 return ret; 1156 1157 if (fw_has_api(&mvm->fw->ucode_capa, 1158 IWL_UCODE_TLV_API_WOWLAN_TCP_SYN_WAKE)) 1159 ret = iwl_mvm_send_patterns(mvm, vif, wowlan); 1160 else 1161 ret = iwl_mvm_send_patterns_v1(mvm, wowlan); 1162 if (ret) 1163 return ret; 1164 1165 return iwl_mvm_send_proto_offload(mvm, vif, false, true, 0); 1166 } 1167 1168 static int 1169 iwl_mvm_netdetect_config(struct iwl_mvm *mvm, 1170 struct cfg80211_wowlan *wowlan, 1171 struct cfg80211_sched_scan_request *nd_config, 1172 struct ieee80211_vif *vif) 1173 { 1174 int ret; 1175 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 1176 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1177 1178 if (!unified_image) { 1179 ret = iwl_mvm_switch_to_d3(mvm); 1180 if (ret) 1181 return ret; 1182 } else { 1183 /* In theory, we wouldn't have to stop a running sched 1184 * scan in order to start another one (for 1185 * net-detect). But in practice this doesn't seem to 1186 * work properly, so stop any running sched_scan now. 1187 */ 1188 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 1189 if (ret) 1190 return ret; 1191 } 1192 1193 ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies, 1194 IWL_MVM_SCAN_NETDETECT); 1195 if (ret) 1196 return ret; 1197 1198 if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels)) 1199 return -EBUSY; 1200 1201 /* save the sched scan matchsets... */ 1202 if (nd_config->n_match_sets) { 1203 mvm->nd_match_sets = kmemdup(nd_config->match_sets, 1204 sizeof(*nd_config->match_sets) * 1205 nd_config->n_match_sets, 1206 GFP_KERNEL); 1207 if (mvm->nd_match_sets) 1208 mvm->n_nd_match_sets = nd_config->n_match_sets; 1209 } 1210 1211 /* ...and the sched scan channels for later reporting */ 1212 mvm->nd_channels = kmemdup(nd_config->channels, 1213 sizeof(*nd_config->channels) * 1214 nd_config->n_channels, 1215 GFP_KERNEL); 1216 if (mvm->nd_channels) 1217 mvm->n_nd_channels = nd_config->n_channels; 1218 1219 return 0; 1220 } 1221 1222 static void iwl_mvm_free_nd(struct iwl_mvm *mvm) 1223 { 1224 kfree(mvm->nd_match_sets); 1225 mvm->nd_match_sets = NULL; 1226 mvm->n_nd_match_sets = 0; 1227 kfree(mvm->nd_channels); 1228 mvm->nd_channels = NULL; 1229 mvm->n_nd_channels = 0; 1230 } 1231 1232 static int __iwl_mvm_suspend(struct ieee80211_hw *hw, 1233 struct cfg80211_wowlan *wowlan, 1234 bool test) 1235 { 1236 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1237 struct ieee80211_vif *vif = NULL; 1238 struct iwl_mvm_vif *mvmvif = NULL; 1239 struct ieee80211_sta *ap_sta = NULL; 1240 struct iwl_d3_manager_config d3_cfg_cmd_data = { 1241 /* 1242 * Program the minimum sleep time to 10 seconds, as many 1243 * platforms have issues processing a wakeup signal while 1244 * still being in the process of suspending. 1245 */ 1246 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000), 1247 }; 1248 struct iwl_host_cmd d3_cfg_cmd = { 1249 .id = D3_CONFIG_CMD, 1250 .flags = CMD_WANT_SKB | CMD_SEND_IN_D3, 1251 .data[0] = &d3_cfg_cmd_data, 1252 .len[0] = sizeof(d3_cfg_cmd_data), 1253 }; 1254 int ret; 1255 int len __maybe_unused; 1256 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 1257 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1258 1259 if (!wowlan) { 1260 /* 1261 * mac80211 shouldn't get here, but for D3 test 1262 * it doesn't warrant a warning 1263 */ 1264 WARN_ON(!test); 1265 return -EINVAL; 1266 } 1267 1268 mutex_lock(&mvm->mutex); 1269 1270 set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 1271 1272 synchronize_net(); 1273 1274 vif = iwl_mvm_get_bss_vif(mvm); 1275 if (IS_ERR_OR_NULL(vif)) { 1276 ret = 1; 1277 goto out_noreset; 1278 } 1279 1280 mvmvif = iwl_mvm_vif_from_mac80211(vif); 1281 1282 if (mvmvif->deflink.ap_sta_id == IWL_MVM_INVALID_STA) { 1283 /* if we're not associated, this must be netdetect */ 1284 if (!wowlan->nd_config) { 1285 ret = 1; 1286 goto out_noreset; 1287 } 1288 1289 ret = iwl_mvm_netdetect_config( 1290 mvm, wowlan, wowlan->nd_config, vif); 1291 if (ret) 1292 goto out; 1293 1294 mvm->net_detect = true; 1295 } else { 1296 struct iwl_wowlan_config_cmd wowlan_config_cmd = {}; 1297 1298 wowlan_config_cmd.sta_id = mvmvif->deflink.ap_sta_id; 1299 1300 ap_sta = rcu_dereference_protected( 1301 mvm->fw_id_to_mac_id[mvmvif->deflink.ap_sta_id], 1302 lockdep_is_held(&mvm->mutex)); 1303 if (IS_ERR_OR_NULL(ap_sta)) { 1304 ret = -EINVAL; 1305 goto out_noreset; 1306 } 1307 1308 ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd, 1309 vif, mvmvif, ap_sta); 1310 if (ret) 1311 goto out_noreset; 1312 ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd, 1313 vif, mvmvif, ap_sta); 1314 if (ret) 1315 goto out; 1316 1317 mvm->net_detect = false; 1318 } 1319 1320 ret = iwl_mvm_power_update_device(mvm); 1321 if (ret) 1322 goto out; 1323 1324 ret = iwl_mvm_power_update_mac(mvm); 1325 if (ret) 1326 goto out; 1327 1328 #ifdef CONFIG_IWLWIFI_DEBUGFS 1329 if (mvm->d3_wake_sysassert) 1330 d3_cfg_cmd_data.wakeup_flags |= 1331 cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR); 1332 #endif 1333 1334 /* 1335 * Prior to 9000 device family the driver needs to stop the dbg 1336 * recording before entering D3. In later devices the FW stops the 1337 * recording automatically. 1338 */ 1339 if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_9000) 1340 iwl_fw_dbg_stop_restart_recording(&mvm->fwrt, NULL, true); 1341 1342 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_D3; 1343 1344 /* must be last -- this switches firmware state */ 1345 ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd); 1346 if (ret) 1347 goto out; 1348 #ifdef CONFIG_IWLWIFI_DEBUGFS 1349 len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt); 1350 if (len >= sizeof(u32)) { 1351 mvm->d3_test_pme_ptr = 1352 le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data); 1353 } 1354 #endif 1355 iwl_free_resp(&d3_cfg_cmd); 1356 1357 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1358 1359 ret = iwl_trans_d3_suspend(mvm->trans, test, !unified_image); 1360 out: 1361 if (ret < 0) { 1362 iwl_mvm_free_nd(mvm); 1363 1364 if (!unified_image) { 1365 if (mvm->fw_restart > 0) { 1366 mvm->fw_restart--; 1367 ieee80211_restart_hw(mvm->hw); 1368 } 1369 } 1370 1371 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 1372 } 1373 out_noreset: 1374 mutex_unlock(&mvm->mutex); 1375 1376 return ret; 1377 } 1378 1379 int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) 1380 { 1381 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1382 1383 iwl_mvm_pause_tcm(mvm, true); 1384 1385 iwl_fw_runtime_suspend(&mvm->fwrt); 1386 1387 return __iwl_mvm_suspend(hw, wowlan, false); 1388 } 1389 1390 struct iwl_multicast_key_data { 1391 u8 key[WOWLAN_KEY_MAX_SIZE]; 1392 u8 len; 1393 u8 flags; 1394 u8 id; 1395 u8 ipn[6]; 1396 }; 1397 1398 /* converted data from the different status responses */ 1399 struct iwl_wowlan_status_data { 1400 u64 replay_ctr; 1401 u32 num_of_gtk_rekeys; 1402 u32 received_beacons; 1403 u32 wakeup_reasons; 1404 u32 wake_packet_length; 1405 u32 wake_packet_bufsize; 1406 u16 pattern_number; 1407 u16 non_qos_seq_ctr; 1408 u16 qos_seq_ctr[8]; 1409 u8 tid_tear_down; 1410 1411 struct { 1412 /* including RX MIC key for TKIP */ 1413 u8 key[WOWLAN_KEY_MAX_SIZE]; 1414 u8 len; 1415 u8 flags; 1416 u8 id; 1417 } gtk[WOWLAN_GTK_KEYS_NUM]; 1418 1419 struct { 1420 /* 1421 * We store both the TKIP and AES representations 1422 * coming from the firmware because we decode the 1423 * data from there before we iterate the keys and 1424 * know which one we need. 1425 */ 1426 struct { 1427 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT]; 1428 } tkip, aes; 1429 1430 /* 1431 * We use -1 for when we have valid data but don't know 1432 * the key ID from firmware, and thus it needs to be 1433 * installed with the last key (depending on rekeying). 1434 */ 1435 s8 key_id; 1436 bool valid; 1437 } gtk_seq[2]; 1438 1439 struct { 1440 /* Same as above */ 1441 struct { 1442 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT]; 1443 u64 tx_pn; 1444 } tkip, aes; 1445 } ptk; 1446 1447 struct iwl_multicast_key_data igtk; 1448 1449 u8 *wake_packet; 1450 }; 1451 1452 static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm, 1453 struct ieee80211_vif *vif, 1454 struct iwl_wowlan_status_data *status) 1455 { 1456 struct sk_buff *pkt = NULL; 1457 struct cfg80211_wowlan_wakeup wakeup = { 1458 .pattern_idx = -1, 1459 }; 1460 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; 1461 u32 reasons = status->wakeup_reasons; 1462 1463 if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) { 1464 wakeup_report = NULL; 1465 goto report; 1466 } 1467 1468 pm_wakeup_event(mvm->dev, 0); 1469 1470 if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET) 1471 wakeup.magic_pkt = true; 1472 1473 if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN) 1474 wakeup.pattern_idx = 1475 status->pattern_number; 1476 1477 if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 1478 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)) 1479 wakeup.disconnect = true; 1480 1481 if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE) 1482 wakeup.gtk_rekey_failure = true; 1483 1484 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 1485 wakeup.rfkill_release = true; 1486 1487 if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST) 1488 wakeup.eap_identity_req = true; 1489 1490 if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE) 1491 wakeup.four_way_handshake = true; 1492 1493 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS) 1494 wakeup.tcp_connlost = true; 1495 1496 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE) 1497 wakeup.tcp_nomoretokens = true; 1498 1499 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET) 1500 wakeup.tcp_match = true; 1501 1502 if (status->wake_packet) { 1503 int pktsize = status->wake_packet_bufsize; 1504 int pktlen = status->wake_packet_length; 1505 const u8 *pktdata = status->wake_packet; 1506 const struct ieee80211_hdr *hdr = (const void *)pktdata; 1507 int truncated = pktlen - pktsize; 1508 1509 /* this would be a firmware bug */ 1510 if (WARN_ON_ONCE(truncated < 0)) 1511 truncated = 0; 1512 1513 if (ieee80211_is_data(hdr->frame_control)) { 1514 int hdrlen = ieee80211_hdrlen(hdr->frame_control); 1515 int ivlen = 0, icvlen = 4; /* also FCS */ 1516 1517 pkt = alloc_skb(pktsize, GFP_KERNEL); 1518 if (!pkt) 1519 goto report; 1520 1521 skb_put_data(pkt, pktdata, hdrlen); 1522 pktdata += hdrlen; 1523 pktsize -= hdrlen; 1524 1525 if (ieee80211_has_protected(hdr->frame_control)) { 1526 /* 1527 * This is unlocked and using gtk_i(c)vlen, 1528 * but since everything is under RTNL still 1529 * that's not really a problem - changing 1530 * it would be difficult. 1531 */ 1532 if (is_multicast_ether_addr(hdr->addr1)) { 1533 ivlen = mvm->gtk_ivlen; 1534 icvlen += mvm->gtk_icvlen; 1535 } else { 1536 ivlen = mvm->ptk_ivlen; 1537 icvlen += mvm->ptk_icvlen; 1538 } 1539 } 1540 1541 /* if truncated, FCS/ICV is (partially) gone */ 1542 if (truncated >= icvlen) { 1543 icvlen = 0; 1544 truncated -= icvlen; 1545 } else { 1546 icvlen -= truncated; 1547 truncated = 0; 1548 } 1549 1550 pktsize -= ivlen + icvlen; 1551 pktdata += ivlen; 1552 1553 skb_put_data(pkt, pktdata, pktsize); 1554 1555 if (ieee80211_data_to_8023(pkt, vif->addr, vif->type)) 1556 goto report; 1557 wakeup.packet = pkt->data; 1558 wakeup.packet_present_len = pkt->len; 1559 wakeup.packet_len = pkt->len - truncated; 1560 wakeup.packet_80211 = false; 1561 } else { 1562 int fcslen = 4; 1563 1564 if (truncated >= 4) { 1565 truncated -= 4; 1566 fcslen = 0; 1567 } else { 1568 fcslen -= truncated; 1569 truncated = 0; 1570 } 1571 pktsize -= fcslen; 1572 wakeup.packet = status->wake_packet; 1573 wakeup.packet_present_len = pktsize; 1574 wakeup.packet_len = pktlen - truncated; 1575 wakeup.packet_80211 = true; 1576 } 1577 } 1578 1579 report: 1580 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); 1581 kfree_skb(pkt); 1582 } 1583 1584 static void iwl_mvm_le64_to_aes_seq(__le64 le_pn, struct ieee80211_key_seq *seq) 1585 { 1586 u64 pn = le64_to_cpu(le_pn); 1587 1588 seq->ccmp.pn[0] = pn >> 40; 1589 seq->ccmp.pn[1] = pn >> 32; 1590 seq->ccmp.pn[2] = pn >> 24; 1591 seq->ccmp.pn[3] = pn >> 16; 1592 seq->ccmp.pn[4] = pn >> 8; 1593 seq->ccmp.pn[5] = pn; 1594 } 1595 1596 static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc, 1597 struct ieee80211_key_seq *seq) 1598 { 1599 iwl_mvm_le64_to_aes_seq(sc->pn, seq); 1600 } 1601 1602 static void iwl_mvm_le64_to_tkip_seq(__le64 le_pn, struct ieee80211_key_seq *seq) 1603 { 1604 u64 pn = le64_to_cpu(le_pn); 1605 1606 seq->tkip.iv16 = (u16)pn; 1607 seq->tkip.iv32 = (u32)(pn >> 16); 1608 } 1609 1610 static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc, 1611 struct ieee80211_key_seq *seq) 1612 { 1613 seq->tkip.iv32 = le32_to_cpu(sc->iv32); 1614 seq->tkip.iv16 = le16_to_cpu(sc->iv16); 1615 } 1616 1617 static void iwl_mvm_set_key_rx_seq_tids(struct ieee80211_key_conf *key, 1618 struct ieee80211_key_seq *seq) 1619 { 1620 int tid; 1621 1622 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) 1623 ieee80211_set_key_rx_seq(key, tid, &seq[tid]); 1624 } 1625 1626 static void iwl_mvm_set_aes_ptk_rx_seq(struct iwl_mvm *mvm, 1627 struct iwl_wowlan_status_data *status, 1628 struct ieee80211_sta *sta, 1629 struct ieee80211_key_conf *key) 1630 { 1631 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1632 struct iwl_mvm_key_pn *ptk_pn; 1633 int tid; 1634 1635 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.aes.seq); 1636 1637 if (!iwl_mvm_has_new_rx_api(mvm)) 1638 return; 1639 1640 1641 rcu_read_lock(); 1642 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]); 1643 if (WARN_ON(!ptk_pn)) { 1644 rcu_read_unlock(); 1645 return; 1646 } 1647 1648 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1649 int i; 1650 1651 for (i = 1; i < mvm->trans->num_rx_queues; i++) 1652 memcpy(ptk_pn->q[i].pn[tid], 1653 status->ptk.aes.seq[tid].ccmp.pn, 1654 IEEE80211_CCMP_PN_LEN); 1655 } 1656 rcu_read_unlock(); 1657 } 1658 1659 static void iwl_mvm_convert_key_counters(struct iwl_wowlan_status_data *status, 1660 union iwl_all_tsc_rsc *sc) 1661 { 1662 int i; 1663 1664 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT); 1665 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC); 1666 1667 /* GTK RX counters */ 1668 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1669 iwl_mvm_tkip_sc_to_seq(&sc->tkip.multicast_rsc[i], 1670 &status->gtk_seq[0].tkip.seq[i]); 1671 iwl_mvm_aes_sc_to_seq(&sc->aes.multicast_rsc[i], 1672 &status->gtk_seq[0].aes.seq[i]); 1673 } 1674 status->gtk_seq[0].valid = true; 1675 status->gtk_seq[0].key_id = -1; 1676 1677 /* PTK TX counter */ 1678 status->ptk.tkip.tx_pn = (u64)le16_to_cpu(sc->tkip.tsc.iv16) | 1679 ((u64)le32_to_cpu(sc->tkip.tsc.iv32) << 16); 1680 status->ptk.aes.tx_pn = le64_to_cpu(sc->aes.tsc.pn); 1681 1682 /* PTK RX counters */ 1683 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1684 iwl_mvm_tkip_sc_to_seq(&sc->tkip.unicast_rsc[i], 1685 &status->ptk.tkip.seq[i]); 1686 iwl_mvm_aes_sc_to_seq(&sc->aes.unicast_rsc[i], 1687 &status->ptk.aes.seq[i]); 1688 } 1689 } 1690 1691 static void 1692 iwl_mvm_convert_key_counters_v5_gtk_seq(struct iwl_wowlan_status_data *status, 1693 struct iwl_wowlan_all_rsc_tsc_v5 *sc, 1694 unsigned int idx, unsigned int key_id) 1695 { 1696 int tid; 1697 1698 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1699 iwl_mvm_le64_to_tkip_seq(sc->mcast_rsc[idx][tid], 1700 &status->gtk_seq[idx].tkip.seq[tid]); 1701 iwl_mvm_le64_to_aes_seq(sc->mcast_rsc[idx][tid], 1702 &status->gtk_seq[idx].aes.seq[tid]); 1703 } 1704 1705 status->gtk_seq[idx].valid = true; 1706 status->gtk_seq[idx].key_id = key_id; 1707 } 1708 1709 static void 1710 iwl_mvm_convert_key_counters_v5(struct iwl_wowlan_status_data *status, 1711 struct iwl_wowlan_all_rsc_tsc_v5 *sc) 1712 { 1713 int i, tid; 1714 1715 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT); 1716 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC); 1717 BUILD_BUG_ON(ARRAY_SIZE(sc->mcast_rsc) != ARRAY_SIZE(status->gtk_seq)); 1718 1719 /* GTK RX counters */ 1720 for (i = 0; i < ARRAY_SIZE(sc->mcast_key_id_map); i++) { 1721 u8 entry = sc->mcast_key_id_map[i]; 1722 1723 if (entry < ARRAY_SIZE(sc->mcast_rsc)) 1724 iwl_mvm_convert_key_counters_v5_gtk_seq(status, sc, 1725 entry, i); 1726 } 1727 1728 /* PTK TX counters not needed, assigned in device */ 1729 1730 /* PTK RX counters */ 1731 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1732 iwl_mvm_le64_to_tkip_seq(sc->ucast_rsc[tid], 1733 &status->ptk.tkip.seq[tid]); 1734 iwl_mvm_le64_to_aes_seq(sc->ucast_rsc[tid], 1735 &status->ptk.aes.seq[tid]); 1736 } 1737 } 1738 1739 static void iwl_mvm_set_key_rx_seq_idx(struct ieee80211_key_conf *key, 1740 struct iwl_wowlan_status_data *status, 1741 int idx) 1742 { 1743 switch (key->cipher) { 1744 case WLAN_CIPHER_SUITE_CCMP: 1745 case WLAN_CIPHER_SUITE_GCMP: 1746 case WLAN_CIPHER_SUITE_GCMP_256: 1747 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].aes.seq); 1748 break; 1749 case WLAN_CIPHER_SUITE_TKIP: 1750 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].tkip.seq); 1751 break; 1752 default: 1753 WARN_ON(1); 1754 } 1755 } 1756 1757 static void iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf *key, 1758 struct iwl_wowlan_status_data *status, 1759 bool installed) 1760 { 1761 int i; 1762 1763 for (i = 0; i < ARRAY_SIZE(status->gtk_seq); i++) { 1764 if (!status->gtk_seq[i].valid) 1765 continue; 1766 1767 /* Handle the case where we know the key ID */ 1768 if (status->gtk_seq[i].key_id == key->keyidx) { 1769 s8 new_key_id = -1; 1770 1771 if (status->num_of_gtk_rekeys) 1772 new_key_id = status->gtk[0].flags & 1773 IWL_WOWLAN_GTK_IDX_MASK; 1774 1775 /* Don't install a new key's value to an old key */ 1776 if (new_key_id != key->keyidx) 1777 iwl_mvm_set_key_rx_seq_idx(key, status, i); 1778 continue; 1779 } 1780 1781 /* handle the case where we didn't, last key only */ 1782 if (status->gtk_seq[i].key_id == -1 && 1783 (!status->num_of_gtk_rekeys || installed)) 1784 iwl_mvm_set_key_rx_seq_idx(key, status, i); 1785 } 1786 } 1787 1788 struct iwl_mvm_d3_gtk_iter_data { 1789 struct iwl_mvm *mvm; 1790 struct iwl_wowlan_status_data *status; 1791 u32 gtk_cipher, igtk_cipher; 1792 bool unhandled_cipher, igtk_support; 1793 int num_keys; 1794 }; 1795 1796 static void iwl_mvm_d3_find_last_keys(struct ieee80211_hw *hw, 1797 struct ieee80211_vif *vif, 1798 struct ieee80211_sta *sta, 1799 struct ieee80211_key_conf *key, 1800 void *_data) 1801 { 1802 struct iwl_mvm_d3_gtk_iter_data *data = _data; 1803 1804 if (data->unhandled_cipher) 1805 return; 1806 1807 switch (key->cipher) { 1808 case WLAN_CIPHER_SUITE_WEP40: 1809 case WLAN_CIPHER_SUITE_WEP104: 1810 /* ignore WEP completely, nothing to do */ 1811 return; 1812 case WLAN_CIPHER_SUITE_CCMP: 1813 case WLAN_CIPHER_SUITE_GCMP: 1814 case WLAN_CIPHER_SUITE_GCMP_256: 1815 case WLAN_CIPHER_SUITE_TKIP: 1816 /* we support these */ 1817 data->gtk_cipher = key->cipher; 1818 break; 1819 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 1820 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 1821 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 1822 case WLAN_CIPHER_SUITE_AES_CMAC: 1823 /* we support these */ 1824 if (data->igtk_support && 1825 (key->keyidx == 4 || key->keyidx == 5)) { 1826 data->igtk_cipher = key->cipher; 1827 } else { 1828 data->unhandled_cipher = true; 1829 return; 1830 } 1831 break; 1832 default: 1833 /* everything else - disconnect from AP */ 1834 data->unhandled_cipher = true; 1835 return; 1836 } 1837 1838 data->num_keys++; 1839 } 1840 1841 static void 1842 iwl_mvm_d3_set_igtk_bigtk_ipn(const struct iwl_multicast_key_data *key, 1843 struct ieee80211_key_seq *seq, u32 cipher) 1844 { 1845 switch (cipher) { 1846 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 1847 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 1848 BUILD_BUG_ON(sizeof(seq->aes_gmac.pn) != sizeof(key->ipn)); 1849 memcpy(seq->aes_gmac.pn, key->ipn, sizeof(seq->aes_gmac.pn)); 1850 break; 1851 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 1852 BUILD_BUG_ON(sizeof(seq->aes_cmac.pn) != sizeof(key->ipn)); 1853 memcpy(seq->aes_cmac.pn, key->ipn, sizeof(seq->aes_cmac.pn)); 1854 break; 1855 } 1856 } 1857 1858 static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw, 1859 struct ieee80211_vif *vif, 1860 struct ieee80211_sta *sta, 1861 struct ieee80211_key_conf *key, 1862 void *_data) 1863 { 1864 struct iwl_mvm_d3_gtk_iter_data *data = _data; 1865 struct iwl_wowlan_status_data *status = data->status; 1866 s8 keyidx; 1867 1868 if (data->unhandled_cipher) 1869 return; 1870 1871 switch (key->cipher) { 1872 case WLAN_CIPHER_SUITE_WEP40: 1873 case WLAN_CIPHER_SUITE_WEP104: 1874 /* ignore WEP completely, nothing to do */ 1875 return; 1876 case WLAN_CIPHER_SUITE_CCMP: 1877 case WLAN_CIPHER_SUITE_GCMP: 1878 case WLAN_CIPHER_SUITE_GCMP_256: 1879 if (sta) { 1880 atomic64_set(&key->tx_pn, status->ptk.aes.tx_pn); 1881 iwl_mvm_set_aes_ptk_rx_seq(data->mvm, status, sta, key); 1882 return; 1883 } 1884 fallthrough; 1885 case WLAN_CIPHER_SUITE_TKIP: 1886 if (sta) { 1887 atomic64_set(&key->tx_pn, status->ptk.tkip.tx_pn); 1888 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.tkip.seq); 1889 return; 1890 } 1891 keyidx = key->keyidx; 1892 /* The current key is always sent by the FW, even if it wasn't 1893 * rekeyed during D3. 1894 * We remove an existing key if it has the same index as 1895 * a new key 1896 */ 1897 if (status->num_of_gtk_rekeys && 1898 ((status->gtk[0].len && keyidx == status->gtk[0].id) || 1899 (status->gtk[1].len && keyidx == status->gtk[1].id))) { 1900 ieee80211_remove_key(key); 1901 } else { 1902 iwl_mvm_set_key_rx_seq(key, data->status, false); 1903 } 1904 break; 1905 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 1906 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 1907 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 1908 case WLAN_CIPHER_SUITE_AES_CMAC: 1909 if (key->keyidx == 4 || key->keyidx == 5) { 1910 /* remove rekeyed key */ 1911 if (status->num_of_gtk_rekeys) { 1912 ieee80211_remove_key(key); 1913 } else { 1914 struct ieee80211_key_seq seq; 1915 1916 iwl_mvm_d3_set_igtk_bigtk_ipn(&status->igtk, 1917 &seq, 1918 key->cipher); 1919 ieee80211_set_key_rx_seq(key, 0, &seq); 1920 } 1921 } 1922 } 1923 } 1924 1925 static bool iwl_mvm_gtk_rekey(struct iwl_wowlan_status_data *status, 1926 struct ieee80211_vif *vif, 1927 struct iwl_mvm *mvm, u32 gtk_cipher) 1928 { 1929 int i; 1930 struct ieee80211_key_conf *key; 1931 struct { 1932 struct ieee80211_key_conf conf; 1933 u8 key[32]; 1934 } conf = { 1935 .conf.cipher = gtk_cipher, 1936 }; 1937 1938 BUILD_BUG_ON(WLAN_KEY_LEN_CCMP != WLAN_KEY_LEN_GCMP); 1939 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_CCMP); 1940 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_GCMP_256); 1941 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_TKIP); 1942 BUILD_BUG_ON(sizeof(conf.key) < sizeof(status->gtk[0].key)); 1943 1944 switch (gtk_cipher) { 1945 case WLAN_CIPHER_SUITE_CCMP: 1946 case WLAN_CIPHER_SUITE_GCMP: 1947 conf.conf.keylen = WLAN_KEY_LEN_CCMP; 1948 break; 1949 case WLAN_CIPHER_SUITE_GCMP_256: 1950 conf.conf.keylen = WLAN_KEY_LEN_GCMP_256; 1951 break; 1952 case WLAN_CIPHER_SUITE_TKIP: 1953 conf.conf.keylen = WLAN_KEY_LEN_TKIP; 1954 break; 1955 default: 1956 WARN_ON(1); 1957 } 1958 1959 for (i = 0; i < ARRAY_SIZE(status->gtk); i++) { 1960 if (!status->gtk[i].len) 1961 continue; 1962 1963 conf.conf.keyidx = status->gtk[i].id; 1964 IWL_DEBUG_WOWLAN(mvm, 1965 "Received from FW GTK cipher %d, key index %d\n", 1966 conf.conf.cipher, conf.conf.keyidx); 1967 memcpy(conf.conf.key, status->gtk[i].key, 1968 sizeof(status->gtk[i].key)); 1969 1970 key = ieee80211_gtk_rekey_add(vif, &conf.conf); 1971 if (IS_ERR(key)) 1972 return false; 1973 iwl_mvm_set_key_rx_seq_idx(key, status, i); 1974 } 1975 1976 return true; 1977 } 1978 1979 static bool 1980 iwl_mvm_d3_igtk_bigtk_rekey_add(struct iwl_wowlan_status_data *status, 1981 struct ieee80211_vif *vif, u32 cipher, 1982 struct iwl_multicast_key_data *key_data) 1983 { 1984 struct ieee80211_key_conf *key_config; 1985 struct { 1986 struct ieee80211_key_conf conf; 1987 u8 key[WOWLAN_KEY_MAX_SIZE]; 1988 } conf = { 1989 .conf.cipher = cipher, 1990 .conf.keyidx = key_data->id, 1991 }; 1992 struct ieee80211_key_seq seq; 1993 1994 if (!key_data->len) 1995 return true; 1996 1997 iwl_mvm_d3_set_igtk_bigtk_ipn(key_data, &seq, conf.conf.cipher); 1998 1999 switch (cipher) { 2000 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 2001 conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_128; 2002 break; 2003 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 2004 conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_256; 2005 break; 2006 case WLAN_CIPHER_SUITE_AES_CMAC: 2007 conf.conf.keylen = WLAN_KEY_LEN_AES_CMAC; 2008 break; 2009 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 2010 conf.conf.keylen = WLAN_KEY_LEN_BIP_CMAC_256; 2011 break; 2012 default: 2013 WARN_ON(1); 2014 } 2015 BUILD_BUG_ON(sizeof(conf.key) < sizeof(key_data->key)); 2016 memcpy(conf.conf.key, key_data->key, conf.conf.keylen); 2017 2018 key_config = ieee80211_gtk_rekey_add(vif, &conf.conf); 2019 if (IS_ERR(key_config)) 2020 return false; 2021 ieee80211_set_key_rx_seq(key_config, 0, &seq); 2022 2023 if (key_config->keyidx == 4 || key_config->keyidx == 5) { 2024 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2025 int link_id = vif->active_links ? __ffs(vif->active_links) : 0; 2026 struct iwl_mvm_vif_link_info *mvm_link = 2027 mvmvif->link[link_id]; 2028 2029 mvm_link->igtk = key_config; 2030 } 2031 2032 return true; 2033 } 2034 2035 static int iwl_mvm_lookup_wowlan_status_ver(struct iwl_mvm *mvm) 2036 { 2037 u8 notif_ver; 2038 2039 if (!fw_has_api(&mvm->fw->ucode_capa, 2040 IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL)) 2041 return 6; 2042 2043 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */ 2044 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP, 2045 WOWLAN_GET_STATUSES, 0); 2046 if (!notif_ver) 2047 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, 2048 WOWLAN_GET_STATUSES, 7); 2049 2050 return notif_ver; 2051 } 2052 2053 static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm, 2054 struct ieee80211_vif *vif, 2055 struct iwl_wowlan_status_data *status) 2056 { 2057 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2058 struct iwl_mvm_d3_gtk_iter_data gtkdata = { 2059 .mvm = mvm, 2060 .status = status, 2061 }; 2062 u32 disconnection_reasons = 2063 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 2064 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH; 2065 2066 if (!status || !vif->bss_conf.bssid) 2067 return false; 2068 2069 if (status->wakeup_reasons & disconnection_reasons) 2070 return false; 2071 2072 if (iwl_mvm_lookup_wowlan_status_ver(mvm) > 6 || 2073 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2074 WOWLAN_INFO_NOTIFICATION, 2075 0)) 2076 gtkdata.igtk_support = true; 2077 2078 /* find last GTK that we used initially, if any */ 2079 ieee80211_iter_keys(mvm->hw, vif, 2080 iwl_mvm_d3_find_last_keys, >kdata); 2081 /* not trying to keep connections with MFP/unhandled ciphers */ 2082 if (gtkdata.unhandled_cipher) 2083 return false; 2084 if (!gtkdata.num_keys) 2085 goto out; 2086 2087 /* 2088 * invalidate all other GTKs that might still exist and update 2089 * the one that we used 2090 */ 2091 ieee80211_iter_keys(mvm->hw, vif, 2092 iwl_mvm_d3_update_keys, >kdata); 2093 2094 if (status->num_of_gtk_rekeys) { 2095 __be64 replay_ctr = cpu_to_be64(status->replay_ctr); 2096 2097 IWL_DEBUG_WOWLAN(mvm, "num of GTK rekeying %d\n", 2098 status->num_of_gtk_rekeys); 2099 2100 if (!iwl_mvm_gtk_rekey(status, vif, mvm, gtkdata.gtk_cipher)) 2101 return false; 2102 2103 if (!iwl_mvm_d3_igtk_bigtk_rekey_add(status, vif, 2104 gtkdata.igtk_cipher, 2105 &status->igtk)) 2106 return false; 2107 2108 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid, 2109 (void *)&replay_ctr, GFP_KERNEL); 2110 } 2111 2112 out: 2113 if (iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP, 2114 WOWLAN_GET_STATUSES, 2115 IWL_FW_CMD_VER_UNKNOWN) < 10) { 2116 mvmvif->seqno_valid = true; 2117 /* +0x10 because the set API expects next-to-use, not last-used */ 2118 mvmvif->seqno = status->non_qos_seq_ctr + 0x10; 2119 } 2120 2121 return true; 2122 } 2123 2124 static void iwl_mvm_convert_gtk_v2(struct iwl_wowlan_status_data *status, 2125 struct iwl_wowlan_gtk_status_v2 *data) 2126 { 2127 BUILD_BUG_ON(sizeof(status->gtk[0].key) < sizeof(data->key)); 2128 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY + 2129 sizeof(data->tkip_mic_key) > 2130 sizeof(status->gtk[0].key)); 2131 2132 status->gtk[0].len = data->key_len; 2133 status->gtk[0].flags = data->key_flags; 2134 2135 memcpy(status->gtk[0].key, data->key, sizeof(data->key)); 2136 2137 /* if it's as long as the TKIP encryption key, copy MIC key */ 2138 if (status->gtk[0].len == NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY) 2139 memcpy(status->gtk[0].key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 2140 data->tkip_mic_key, sizeof(data->tkip_mic_key)); 2141 } 2142 2143 static void iwl_mvm_convert_gtk_v3(struct iwl_wowlan_status_data *status, 2144 struct iwl_wowlan_gtk_status_v3 *data) 2145 { 2146 int data_idx, status_idx = 0; 2147 2148 BUILD_BUG_ON(sizeof(status->gtk[0].key) < sizeof(data[0].key)); 2149 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY + 2150 sizeof(data[0].tkip_mic_key) > 2151 sizeof(status->gtk[0].key)); 2152 BUILD_BUG_ON(ARRAY_SIZE(status->gtk) < WOWLAN_GTK_KEYS_NUM); 2153 for (data_idx = 0; data_idx < ARRAY_SIZE(status->gtk); data_idx++) { 2154 if (!(data[data_idx].key_len)) 2155 continue; 2156 status->gtk[status_idx].len = data[data_idx].key_len; 2157 status->gtk[status_idx].flags = data[data_idx].key_flags; 2158 status->gtk[status_idx].id = status->gtk[status_idx].flags & 2159 IWL_WOWLAN_GTK_IDX_MASK; 2160 2161 memcpy(status->gtk[status_idx].key, data[data_idx].key, 2162 sizeof(data[data_idx].key)); 2163 2164 /* if it's as long as the TKIP encryption key, copy MIC key */ 2165 if (status->gtk[status_idx].len == 2166 NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY) 2167 memcpy(status->gtk[status_idx].key + 2168 NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 2169 data[data_idx].tkip_mic_key, 2170 sizeof(data[data_idx].tkip_mic_key)); 2171 status_idx++; 2172 } 2173 } 2174 2175 static void iwl_mvm_convert_igtk(struct iwl_wowlan_status_data *status, 2176 struct iwl_wowlan_igtk_status *data) 2177 { 2178 int i; 2179 2180 BUILD_BUG_ON(sizeof(status->igtk.key) < sizeof(data->key)); 2181 BUILD_BUG_ON(sizeof(status->igtk.ipn) != sizeof(data->ipn)); 2182 2183 if (!data->key_len) 2184 return; 2185 2186 status->igtk.len = data->key_len; 2187 status->igtk.flags = data->key_flags; 2188 status->igtk.id = u32_get_bits(data->key_flags, 2189 IWL_WOWLAN_IGTK_BIGTK_IDX_MASK) 2190 + WOWLAN_IGTK_MIN_INDEX; 2191 2192 memcpy(status->igtk.key, data->key, sizeof(data->key)); 2193 2194 /* mac80211 expects big endian for memcmp() to work, convert */ 2195 for (i = 0; i < sizeof(data->ipn); i++) 2196 status->igtk.ipn[i] = data->ipn[sizeof(data->ipn) - i - 1]; 2197 } 2198 2199 static void iwl_mvm_parse_wowlan_info_notif(struct iwl_mvm *mvm, 2200 struct iwl_wowlan_info_notif *data, 2201 struct iwl_wowlan_status_data *status, 2202 u32 len) 2203 { 2204 u32 i; 2205 2206 if (!data) { 2207 IWL_ERR(mvm, "iwl_wowlan_info_notif data is NULL\n"); 2208 status = NULL; 2209 return; 2210 } 2211 2212 if (len < sizeof(*data)) { 2213 IWL_ERR(mvm, "Invalid WoWLAN info notification!\n"); 2214 status = NULL; 2215 return; 2216 } 2217 2218 iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc); 2219 iwl_mvm_convert_gtk_v3(status, data->gtk); 2220 iwl_mvm_convert_igtk(status, &data->igtk[0]); 2221 2222 status->replay_ctr = le64_to_cpu(data->replay_ctr); 2223 status->pattern_number = le16_to_cpu(data->pattern_number); 2224 for (i = 0; i < IWL_MAX_TID_COUNT; i++) 2225 status->qos_seq_ctr[i] = 2226 le16_to_cpu(data->qos_seq_ctr[i]); 2227 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); 2228 status->num_of_gtk_rekeys = 2229 le32_to_cpu(data->num_of_gtk_rekeys); 2230 status->received_beacons = le32_to_cpu(data->received_beacons); 2231 status->tid_tear_down = data->tid_tear_down; 2232 } 2233 2234 /* Occasionally, templates would be nice. This is one of those times ... */ 2235 #define iwl_mvm_parse_wowlan_status_common(_ver) \ 2236 static struct iwl_wowlan_status_data * \ 2237 iwl_mvm_parse_wowlan_status_common_ ## _ver(struct iwl_mvm *mvm, \ 2238 struct iwl_wowlan_status_ ##_ver *data,\ 2239 int len) \ 2240 { \ 2241 struct iwl_wowlan_status_data *status; \ 2242 int data_size, i; \ 2243 \ 2244 if (len < sizeof(*data)) { \ 2245 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \ 2246 return NULL; \ 2247 } \ 2248 \ 2249 data_size = ALIGN(le32_to_cpu(data->wake_packet_bufsize), 4); \ 2250 if (len != sizeof(*data) + data_size) { \ 2251 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \ 2252 return NULL; \ 2253 } \ 2254 \ 2255 status = kzalloc(sizeof(*status), GFP_KERNEL); \ 2256 if (!status) \ 2257 return NULL; \ 2258 \ 2259 /* copy all the common fields */ \ 2260 status->replay_ctr = le64_to_cpu(data->replay_ctr); \ 2261 status->pattern_number = le16_to_cpu(data->pattern_number); \ 2262 status->non_qos_seq_ctr = le16_to_cpu(data->non_qos_seq_ctr); \ 2263 for (i = 0; i < 8; i++) \ 2264 status->qos_seq_ctr[i] = \ 2265 le16_to_cpu(data->qos_seq_ctr[i]); \ 2266 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); \ 2267 status->num_of_gtk_rekeys = \ 2268 le32_to_cpu(data->num_of_gtk_rekeys); \ 2269 status->received_beacons = le32_to_cpu(data->received_beacons); \ 2270 status->wake_packet_length = \ 2271 le32_to_cpu(data->wake_packet_length); \ 2272 status->wake_packet_bufsize = \ 2273 le32_to_cpu(data->wake_packet_bufsize); \ 2274 if (status->wake_packet_bufsize) { \ 2275 status->wake_packet = \ 2276 kmemdup(data->wake_packet, \ 2277 status->wake_packet_bufsize, \ 2278 GFP_KERNEL); \ 2279 if (!status->wake_packet) { \ 2280 kfree(status); \ 2281 return NULL; \ 2282 } \ 2283 } else { \ 2284 status->wake_packet = NULL; \ 2285 } \ 2286 \ 2287 return status; \ 2288 } 2289 2290 iwl_mvm_parse_wowlan_status_common(v6) 2291 iwl_mvm_parse_wowlan_status_common(v7) 2292 iwl_mvm_parse_wowlan_status_common(v9) 2293 iwl_mvm_parse_wowlan_status_common(v12) 2294 2295 static struct iwl_wowlan_status_data * 2296 iwl_mvm_send_wowlan_get_status(struct iwl_mvm *mvm, u8 sta_id) 2297 { 2298 struct iwl_wowlan_status_data *status; 2299 struct iwl_wowlan_get_status_cmd get_status_cmd = { 2300 .sta_id = cpu_to_le32(sta_id), 2301 }; 2302 struct iwl_host_cmd cmd = { 2303 .id = WOWLAN_GET_STATUSES, 2304 .flags = CMD_WANT_SKB, 2305 .data = { &get_status_cmd, }, 2306 .len = { sizeof(get_status_cmd), }, 2307 }; 2308 int ret, len; 2309 u8 notif_ver; 2310 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id, 2311 IWL_FW_CMD_VER_UNKNOWN); 2312 2313 if (cmd_ver == IWL_FW_CMD_VER_UNKNOWN) 2314 cmd.len[0] = 0; 2315 2316 lockdep_assert_held(&mvm->mutex); 2317 2318 ret = iwl_mvm_send_cmd(mvm, &cmd); 2319 if (ret) { 2320 IWL_ERR(mvm, "failed to query wakeup status (%d)\n", ret); 2321 return ERR_PTR(ret); 2322 } 2323 2324 len = iwl_rx_packet_payload_len(cmd.resp_pkt); 2325 2326 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */ 2327 notif_ver = iwl_mvm_lookup_wowlan_status_ver(mvm); 2328 2329 if (notif_ver < 7) { 2330 struct iwl_wowlan_status_v6 *v6 = (void *)cmd.resp_pkt->data; 2331 2332 status = iwl_mvm_parse_wowlan_status_common_v6(mvm, v6, len); 2333 if (!status) 2334 goto out_free_resp; 2335 2336 BUILD_BUG_ON(sizeof(v6->gtk.decrypt_key) > 2337 sizeof(status->gtk[0].key)); 2338 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY + 2339 sizeof(v6->gtk.tkip_mic_key) > 2340 sizeof(status->gtk[0].key)); 2341 2342 /* copy GTK info to the right place */ 2343 memcpy(status->gtk[0].key, v6->gtk.decrypt_key, 2344 sizeof(v6->gtk.decrypt_key)); 2345 memcpy(status->gtk[0].key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 2346 v6->gtk.tkip_mic_key, 2347 sizeof(v6->gtk.tkip_mic_key)); 2348 2349 iwl_mvm_convert_key_counters(status, &v6->gtk.rsc.all_tsc_rsc); 2350 2351 /* hardcode the key length to 16 since v6 only supports 16 */ 2352 status->gtk[0].len = 16; 2353 2354 /* 2355 * The key index only uses 2 bits (values 0 to 3) and 2356 * we always set bit 7 which means this is the 2357 * currently used key. 2358 */ 2359 status->gtk[0].flags = v6->gtk.key_index | BIT(7); 2360 } else if (notif_ver == 7) { 2361 struct iwl_wowlan_status_v7 *v7 = (void *)cmd.resp_pkt->data; 2362 2363 status = iwl_mvm_parse_wowlan_status_common_v7(mvm, v7, len); 2364 if (!status) 2365 goto out_free_resp; 2366 2367 iwl_mvm_convert_key_counters(status, &v7->gtk[0].rsc.all_tsc_rsc); 2368 iwl_mvm_convert_gtk_v2(status, &v7->gtk[0]); 2369 iwl_mvm_convert_igtk(status, &v7->igtk[0]); 2370 } else if (notif_ver == 9 || notif_ver == 10 || notif_ver == 11) { 2371 struct iwl_wowlan_status_v9 *v9 = (void *)cmd.resp_pkt->data; 2372 2373 /* these three command versions have same layout and size, the 2374 * difference is only in a few not used (reserved) fields. 2375 */ 2376 status = iwl_mvm_parse_wowlan_status_common_v9(mvm, v9, len); 2377 if (!status) 2378 goto out_free_resp; 2379 2380 iwl_mvm_convert_key_counters(status, &v9->gtk[0].rsc.all_tsc_rsc); 2381 iwl_mvm_convert_gtk_v2(status, &v9->gtk[0]); 2382 iwl_mvm_convert_igtk(status, &v9->igtk[0]); 2383 2384 status->tid_tear_down = v9->tid_tear_down; 2385 } else if (notif_ver == 12) { 2386 struct iwl_wowlan_status_v12 *v12 = (void *)cmd.resp_pkt->data; 2387 2388 status = iwl_mvm_parse_wowlan_status_common_v12(mvm, v12, len); 2389 if (!status) 2390 goto out_free_resp; 2391 2392 iwl_mvm_convert_key_counters_v5(status, &v12->gtk[0].sc); 2393 iwl_mvm_convert_gtk_v3(status, v12->gtk); 2394 iwl_mvm_convert_igtk(status, &v12->igtk[0]); 2395 2396 status->tid_tear_down = v12->tid_tear_down; 2397 } else { 2398 IWL_ERR(mvm, 2399 "Firmware advertises unknown WoWLAN status response %d!\n", 2400 notif_ver); 2401 status = NULL; 2402 } 2403 2404 out_free_resp: 2405 iwl_free_resp(&cmd); 2406 return status; 2407 } 2408 2409 /* releases the MVM mutex */ 2410 static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm, 2411 struct ieee80211_vif *vif, 2412 struct iwl_wowlan_status_data *status) 2413 { 2414 int i; 2415 bool keep; 2416 struct iwl_mvm_sta *mvm_ap_sta; 2417 2418 if (!status) 2419 goto out_unlock; 2420 2421 IWL_DEBUG_WOWLAN(mvm, "wakeup reason 0x%x\n", 2422 status->wakeup_reasons); 2423 2424 /* still at hard-coded place 0 for D3 image */ 2425 mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, 0); 2426 if (!mvm_ap_sta) 2427 goto out_unlock; 2428 2429 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 2430 u16 seq = status->qos_seq_ctr[i]; 2431 /* firmware stores last-used value, we store next value */ 2432 seq += 0x10; 2433 mvm_ap_sta->tid_data[i].seq_number = seq; 2434 } 2435 2436 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000) { 2437 i = mvm->offload_tid; 2438 iwl_trans_set_q_ptrs(mvm->trans, 2439 mvm_ap_sta->tid_data[i].txq_id, 2440 mvm_ap_sta->tid_data[i].seq_number >> 4); 2441 } 2442 2443 /* now we have all the data we need, unlock to avoid mac80211 issues */ 2444 mutex_unlock(&mvm->mutex); 2445 2446 iwl_mvm_report_wakeup_reasons(mvm, vif, status); 2447 2448 keep = iwl_mvm_setup_connection_keep(mvm, vif, status); 2449 2450 return keep; 2451 2452 out_unlock: 2453 mutex_unlock(&mvm->mutex); 2454 return false; 2455 } 2456 2457 #define ND_QUERY_BUF_LEN (sizeof(struct iwl_scan_offload_profile_match) * \ 2458 IWL_SCAN_MAX_PROFILES) 2459 2460 struct iwl_mvm_nd_results { 2461 u32 matched_profiles; 2462 u8 matches[ND_QUERY_BUF_LEN]; 2463 }; 2464 2465 static int 2466 iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm, 2467 struct iwl_mvm_nd_results *results) 2468 { 2469 struct iwl_scan_offload_match_info *query; 2470 struct iwl_host_cmd cmd = { 2471 .id = SCAN_OFFLOAD_PROFILES_QUERY_CMD, 2472 .flags = CMD_WANT_SKB, 2473 }; 2474 int ret, len; 2475 size_t query_len, matches_len; 2476 int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw); 2477 2478 ret = iwl_mvm_send_cmd(mvm, &cmd); 2479 if (ret) { 2480 IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret); 2481 return ret; 2482 } 2483 2484 if (fw_has_api(&mvm->fw->ucode_capa, 2485 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2486 query_len = sizeof(struct iwl_scan_offload_match_info); 2487 matches_len = sizeof(struct iwl_scan_offload_profile_match) * 2488 max_profiles; 2489 } else { 2490 query_len = sizeof(struct iwl_scan_offload_profiles_query_v1); 2491 matches_len = sizeof(struct iwl_scan_offload_profile_match_v1) * 2492 max_profiles; 2493 } 2494 2495 len = iwl_rx_packet_payload_len(cmd.resp_pkt); 2496 if (len < query_len) { 2497 IWL_ERR(mvm, "Invalid scan offload profiles query response!\n"); 2498 ret = -EIO; 2499 goto out_free_resp; 2500 } 2501 2502 query = (void *)cmd.resp_pkt->data; 2503 2504 results->matched_profiles = le32_to_cpu(query->matched_profiles); 2505 memcpy(results->matches, query->matches, matches_len); 2506 2507 #ifdef CONFIG_IWLWIFI_DEBUGFS 2508 mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done); 2509 #endif 2510 2511 out_free_resp: 2512 iwl_free_resp(&cmd); 2513 return ret; 2514 } 2515 2516 static int iwl_mvm_query_num_match_chans(struct iwl_mvm *mvm, 2517 struct iwl_mvm_nd_results *results, 2518 int idx) 2519 { 2520 int n_chans = 0, i; 2521 2522 if (fw_has_api(&mvm->fw->ucode_capa, 2523 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2524 struct iwl_scan_offload_profile_match *matches = 2525 (void *)results->matches; 2526 2527 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; i++) 2528 n_chans += hweight8(matches[idx].matching_channels[i]); 2529 } else { 2530 struct iwl_scan_offload_profile_match_v1 *matches = 2531 (void *)results->matches; 2532 2533 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1; i++) 2534 n_chans += hweight8(matches[idx].matching_channels[i]); 2535 } 2536 2537 return n_chans; 2538 } 2539 2540 static void iwl_mvm_query_set_freqs(struct iwl_mvm *mvm, 2541 struct iwl_mvm_nd_results *results, 2542 struct cfg80211_wowlan_nd_match *match, 2543 int idx) 2544 { 2545 int i; 2546 2547 if (fw_has_api(&mvm->fw->ucode_capa, 2548 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2549 struct iwl_scan_offload_profile_match *matches = 2550 (void *)results->matches; 2551 2552 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; i++) 2553 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8))) 2554 match->channels[match->n_channels++] = 2555 mvm->nd_channels[i]->center_freq; 2556 } else { 2557 struct iwl_scan_offload_profile_match_v1 *matches = 2558 (void *)results->matches; 2559 2560 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1 * 8; i++) 2561 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8))) 2562 match->channels[match->n_channels++] = 2563 mvm->nd_channels[i]->center_freq; 2564 } 2565 } 2566 2567 /** 2568 * enum iwl_d3_notif - d3 notifications 2569 * @IWL_D3_NOTIF_WOWLAN_INFO: WOWLAN_INFO_NOTIF was received 2570 * @IWL_D3_NOTIF_WOWLAN_WAKE_PKT: WOWLAN_WAKE_PKT_NOTIF was received 2571 * @IWL_D3_NOTIF_PROT_OFFLOAD: PROT_OFFLOAD_NOTIF was received 2572 * @IWL_D3_ND_MATCH_INFO: OFFLOAD_MATCH_INFO_NOTIF was received 2573 * @IWL_D3_NOTIF_D3_END_NOTIF: D3_END_NOTIF was received 2574 */ 2575 enum iwl_d3_notif { 2576 IWL_D3_NOTIF_WOWLAN_INFO = BIT(0), 2577 IWL_D3_NOTIF_WOWLAN_WAKE_PKT = BIT(1), 2578 IWL_D3_NOTIF_PROT_OFFLOAD = BIT(2), 2579 IWL_D3_ND_MATCH_INFO = BIT(3), 2580 IWL_D3_NOTIF_D3_END_NOTIF = BIT(4) 2581 }; 2582 2583 /* manage d3 resume data */ 2584 struct iwl_d3_data { 2585 struct iwl_wowlan_status_data *status; 2586 bool test; 2587 u32 d3_end_flags; 2588 u32 notif_expected; /* bitmap - see &enum iwl_d3_notif */ 2589 u32 notif_received; /* bitmap - see &enum iwl_d3_notif */ 2590 struct iwl_mvm_nd_results *nd_results; 2591 bool nd_results_valid; 2592 }; 2593 2594 static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm, 2595 struct ieee80211_vif *vif, 2596 struct iwl_d3_data *d3_data) 2597 { 2598 struct cfg80211_wowlan_nd_info *net_detect = NULL; 2599 struct cfg80211_wowlan_wakeup wakeup = { 2600 .pattern_idx = -1, 2601 }; 2602 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; 2603 unsigned long matched_profiles; 2604 u32 reasons = 0; 2605 int i, n_matches, ret; 2606 2607 if (WARN_ON(!d3_data || !d3_data->status)) 2608 goto out; 2609 2610 reasons = d3_data->status->wakeup_reasons; 2611 2612 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 2613 wakeup.rfkill_release = true; 2614 2615 if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) 2616 goto out; 2617 2618 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2619 WOWLAN_INFO_NOTIFICATION, 0)) { 2620 IWL_INFO(mvm, "Query FW for ND results\n"); 2621 ret = iwl_mvm_netdetect_query_results(mvm, d3_data->nd_results); 2622 2623 } else { 2624 IWL_INFO(mvm, "Notification based ND results\n"); 2625 ret = d3_data->nd_results_valid ? 0 : -1; 2626 } 2627 2628 if (ret || !d3_data->nd_results->matched_profiles) { 2629 wakeup_report = NULL; 2630 goto out; 2631 } 2632 2633 matched_profiles = d3_data->nd_results->matched_profiles; 2634 if (mvm->n_nd_match_sets) { 2635 n_matches = hweight_long(matched_profiles); 2636 } else { 2637 IWL_ERR(mvm, "no net detect match information available\n"); 2638 n_matches = 0; 2639 } 2640 2641 net_detect = kzalloc(struct_size(net_detect, matches, n_matches), 2642 GFP_KERNEL); 2643 if (!net_detect || !n_matches) 2644 goto out_report_nd; 2645 2646 for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) { 2647 struct cfg80211_wowlan_nd_match *match; 2648 int idx, n_channels = 0; 2649 2650 n_channels = iwl_mvm_query_num_match_chans(mvm, 2651 d3_data->nd_results, 2652 i); 2653 2654 match = kzalloc(struct_size(match, channels, n_channels), 2655 GFP_KERNEL); 2656 if (!match) 2657 goto out_report_nd; 2658 2659 net_detect->matches[net_detect->n_matches++] = match; 2660 2661 /* We inverted the order of the SSIDs in the scan 2662 * request, so invert the index here. 2663 */ 2664 idx = mvm->n_nd_match_sets - i - 1; 2665 match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len; 2666 memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid, 2667 match->ssid.ssid_len); 2668 2669 if (mvm->n_nd_channels < n_channels) 2670 continue; 2671 2672 iwl_mvm_query_set_freqs(mvm, d3_data->nd_results, match, i); 2673 } 2674 2675 out_report_nd: 2676 wakeup.net_detect = net_detect; 2677 out: 2678 iwl_mvm_free_nd(mvm); 2679 2680 mutex_unlock(&mvm->mutex); 2681 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); 2682 2683 if (net_detect) { 2684 for (i = 0; i < net_detect->n_matches; i++) 2685 kfree(net_detect->matches[i]); 2686 kfree(net_detect); 2687 } 2688 } 2689 2690 static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac, 2691 struct ieee80211_vif *vif) 2692 { 2693 /* skip the one we keep connection on */ 2694 if (data == vif) 2695 return; 2696 2697 if (vif->type == NL80211_IFTYPE_STATION) 2698 ieee80211_resume_disconnect(vif); 2699 } 2700 2701 static bool iwl_mvm_rt_status(struct iwl_trans *trans, u32 base, u32 *err_id) 2702 { 2703 struct error_table_start { 2704 /* cf. struct iwl_error_event_table */ 2705 u32 valid; 2706 __le32 err_id; 2707 } err_info; 2708 2709 if (!base) 2710 return false; 2711 2712 iwl_trans_read_mem_bytes(trans, base, 2713 &err_info, sizeof(err_info)); 2714 if (err_info.valid && err_id) 2715 *err_id = le32_to_cpu(err_info.err_id); 2716 2717 return !!err_info.valid; 2718 } 2719 2720 static bool iwl_mvm_check_rt_status(struct iwl_mvm *mvm, 2721 struct ieee80211_vif *vif) 2722 { 2723 u32 err_id; 2724 2725 /* check for lmac1 error */ 2726 if (iwl_mvm_rt_status(mvm->trans, 2727 mvm->trans->dbg.lmac_error_event_table[0], 2728 &err_id)) { 2729 if (err_id == RF_KILL_INDICATOR_FOR_WOWLAN) { 2730 struct cfg80211_wowlan_wakeup wakeup = { 2731 .rfkill_release = true, 2732 }; 2733 ieee80211_report_wowlan_wakeup(vif, &wakeup, 2734 GFP_KERNEL); 2735 } 2736 return true; 2737 } 2738 2739 /* check if we have lmac2 set and check for error */ 2740 if (iwl_mvm_rt_status(mvm->trans, 2741 mvm->trans->dbg.lmac_error_event_table[1], NULL)) 2742 return true; 2743 2744 /* check for umac error */ 2745 if (iwl_mvm_rt_status(mvm->trans, 2746 mvm->trans->dbg.umac_error_event_table, NULL)) 2747 return true; 2748 2749 return false; 2750 } 2751 2752 /* 2753 * This function assumes: 2754 * 1. The mutex is already held. 2755 * 2. The callee functions unlock the mutex. 2756 */ 2757 static bool 2758 iwl_mvm_choose_query_wakeup_reasons(struct iwl_mvm *mvm, 2759 struct ieee80211_vif *vif, 2760 struct iwl_d3_data *d3_data) 2761 { 2762 lockdep_assert_held(&mvm->mutex); 2763 2764 /* if FW uses status notification, status shouldn't be NULL here */ 2765 if (!d3_data->status) { 2766 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2767 u8 sta_id = mvm->net_detect ? IWL_MVM_INVALID_STA : 2768 mvmvif->deflink.ap_sta_id; 2769 2770 d3_data->status = iwl_mvm_send_wowlan_get_status(mvm, sta_id); 2771 } 2772 2773 if (mvm->net_detect) { 2774 iwl_mvm_query_netdetect_reasons(mvm, vif, d3_data); 2775 } else { 2776 bool keep = iwl_mvm_query_wakeup_reasons(mvm, vif, 2777 d3_data->status); 2778 2779 #ifdef CONFIG_IWLWIFI_DEBUGFS 2780 if (keep) 2781 mvm->keep_vif = vif; 2782 #endif 2783 2784 return keep; 2785 } 2786 return false; 2787 } 2788 2789 #define IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT (IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET | \ 2790 IWL_WOWLAN_WAKEUP_BY_PATTERN | \ 2791 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN |\ 2792 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN_WILDCARD |\ 2793 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN |\ 2794 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN_WILDCARD) 2795 2796 static int iwl_mvm_wowlan_store_wake_pkt(struct iwl_mvm *mvm, 2797 struct iwl_wowlan_wake_pkt_notif *notif, 2798 struct iwl_wowlan_status_data *status, 2799 u32 len) 2800 { 2801 u32 data_size, packet_len = le32_to_cpu(notif->wake_packet_length); 2802 2803 if (len < sizeof(*notif)) { 2804 IWL_ERR(mvm, "Invalid WoWLAN wake packet notification!\n"); 2805 return -EIO; 2806 } 2807 2808 if (WARN_ON(!status)) { 2809 IWL_ERR(mvm, "Got wake packet notification but wowlan status data is NULL\n"); 2810 return -EIO; 2811 } 2812 2813 if (WARN_ON(!(status->wakeup_reasons & 2814 IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT))) { 2815 IWL_ERR(mvm, "Got wakeup packet but wakeup reason is %x\n", 2816 status->wakeup_reasons); 2817 return -EIO; 2818 } 2819 2820 data_size = len - offsetof(struct iwl_wowlan_wake_pkt_notif, wake_packet); 2821 2822 /* data_size got the padding from the notification, remove it. */ 2823 if (packet_len < data_size) 2824 data_size = packet_len; 2825 2826 status->wake_packet = kmemdup(notif->wake_packet, data_size, 2827 GFP_ATOMIC); 2828 2829 if (!status->wake_packet) 2830 return -ENOMEM; 2831 2832 status->wake_packet_length = packet_len; 2833 status->wake_packet_bufsize = data_size; 2834 2835 return 0; 2836 } 2837 2838 static void iwl_mvm_nd_match_info_handler(struct iwl_mvm *mvm, 2839 struct iwl_d3_data *d3_data, 2840 struct iwl_scan_offload_match_info *notif, 2841 u32 len) 2842 { 2843 struct iwl_wowlan_status_data *status = d3_data->status; 2844 struct ieee80211_vif *vif = iwl_mvm_get_bss_vif(mvm); 2845 struct iwl_mvm_nd_results *results = d3_data->nd_results; 2846 size_t i, matches_len = sizeof(struct iwl_scan_offload_profile_match) * 2847 iwl_umac_scan_get_max_profiles(mvm->fw); 2848 2849 if (IS_ERR_OR_NULL(vif)) 2850 return; 2851 2852 if (len < sizeof(struct iwl_scan_offload_match_info)) { 2853 IWL_ERR(mvm, "Invalid scan match info notification\n"); 2854 return; 2855 } 2856 2857 if (!mvm->net_detect) { 2858 IWL_ERR(mvm, "Unexpected scan match info notification\n"); 2859 return; 2860 } 2861 2862 if (!status || status->wakeup_reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) { 2863 IWL_ERR(mvm, 2864 "Ignore scan match info notification: no reason\n"); 2865 return; 2866 } 2867 2868 #ifdef CONFIG_IWLWIFI_DEBUGFS 2869 mvm->last_netdetect_scans = le32_to_cpu(notif->n_scans_done); 2870 #endif 2871 2872 results->matched_profiles = le32_to_cpu(notif->matched_profiles); 2873 IWL_INFO(mvm, "number of matched profiles=%u\n", 2874 results->matched_profiles); 2875 2876 if (results->matched_profiles) { 2877 memcpy(results->matches, notif->matches, matches_len); 2878 d3_data->nd_results_valid = TRUE; 2879 } 2880 2881 /* no scan should be active at this point */ 2882 mvm->scan_status = 0; 2883 for (i = 0; i < mvm->max_scans; i++) 2884 mvm->scan_uid_status[i] = 0; 2885 } 2886 2887 static bool iwl_mvm_wait_d3_notif(struct iwl_notif_wait_data *notif_wait, 2888 struct iwl_rx_packet *pkt, void *data) 2889 { 2890 struct iwl_mvm *mvm = 2891 container_of(notif_wait, struct iwl_mvm, notif_wait); 2892 struct iwl_d3_data *d3_data = data; 2893 u32 len; 2894 int ret; 2895 int wowlan_info_ver = iwl_fw_lookup_notif_ver(mvm->fw, 2896 PROT_OFFLOAD_GROUP, 2897 WOWLAN_INFO_NOTIFICATION, 2898 IWL_FW_CMD_VER_UNKNOWN); 2899 2900 2901 switch (WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) { 2902 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION): { 2903 struct iwl_wowlan_info_notif *notif; 2904 2905 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_INFO) { 2906 /* We might get two notifications due to dual bss */ 2907 IWL_DEBUG_WOWLAN(mvm, 2908 "Got additional wowlan info notification\n"); 2909 break; 2910 } 2911 2912 if (wowlan_info_ver < 2) { 2913 struct iwl_wowlan_info_notif_v1 *notif_v1 = (void *)pkt->data; 2914 2915 notif = kmemdup(notif_v1, sizeof(*notif), GFP_ATOMIC); 2916 if (!notif) 2917 return false; 2918 2919 notif->tid_tear_down = notif_v1->tid_tear_down; 2920 notif->station_id = notif_v1->station_id; 2921 memset_after(notif, 0, station_id); 2922 } else { 2923 notif = (void *)pkt->data; 2924 } 2925 2926 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_INFO; 2927 len = iwl_rx_packet_payload_len(pkt); 2928 iwl_mvm_parse_wowlan_info_notif(mvm, notif, d3_data->status, 2929 len); 2930 2931 if (wowlan_info_ver < 2) 2932 kfree(notif); 2933 2934 if (d3_data->status && 2935 d3_data->status->wakeup_reasons & IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT) 2936 /* We are supposed to get also wake packet notif */ 2937 d3_data->notif_expected |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT; 2938 2939 break; 2940 } 2941 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION): { 2942 struct iwl_wowlan_wake_pkt_notif *notif = (void *)pkt->data; 2943 2944 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_WAKE_PKT) { 2945 /* We shouldn't get two wake packet notifications */ 2946 IWL_ERR(mvm, 2947 "Got additional wowlan wake packet notification\n"); 2948 } else { 2949 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT; 2950 len = iwl_rx_packet_payload_len(pkt); 2951 ret = iwl_mvm_wowlan_store_wake_pkt(mvm, notif, 2952 d3_data->status, 2953 len); 2954 if (ret) 2955 IWL_ERR(mvm, 2956 "Can't parse WOWLAN_WAKE_PKT_NOTIFICATION\n"); 2957 } 2958 2959 break; 2960 } 2961 case WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF): { 2962 struct iwl_scan_offload_match_info *notif = (void *)pkt->data; 2963 2964 if (d3_data->notif_received & IWL_D3_ND_MATCH_INFO) { 2965 IWL_ERR(mvm, 2966 "Got additional netdetect match info\n"); 2967 break; 2968 } 2969 2970 d3_data->notif_received |= IWL_D3_ND_MATCH_INFO; 2971 2972 /* explicitly set this in the 'expected' as well */ 2973 d3_data->notif_expected |= IWL_D3_ND_MATCH_INFO; 2974 2975 len = iwl_rx_packet_payload_len(pkt); 2976 iwl_mvm_nd_match_info_handler(mvm, d3_data, notif, len); 2977 break; 2978 } 2979 case WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION): { 2980 struct iwl_mvm_d3_end_notif *notif = (void *)pkt->data; 2981 2982 d3_data->d3_end_flags = __le32_to_cpu(notif->flags); 2983 d3_data->notif_received |= IWL_D3_NOTIF_D3_END_NOTIF; 2984 2985 break; 2986 } 2987 default: 2988 WARN_ON(1); 2989 } 2990 2991 return d3_data->notif_received == d3_data->notif_expected; 2992 } 2993 2994 static int iwl_mvm_resume_firmware(struct iwl_mvm *mvm, bool test) 2995 { 2996 int ret; 2997 enum iwl_d3_status d3_status; 2998 struct iwl_host_cmd cmd = { 2999 .id = D0I3_END_CMD, 3000 .flags = CMD_WANT_SKB | CMD_SEND_IN_D3, 3001 }; 3002 bool reset = fw_has_capa(&mvm->fw->ucode_capa, 3003 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 3004 3005 ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, !reset); 3006 if (ret) 3007 return ret; 3008 3009 if (d3_status != IWL_D3_STATUS_ALIVE) { 3010 IWL_INFO(mvm, "Device was reset during suspend\n"); 3011 return -ENOENT; 3012 } 3013 3014 /* 3015 * We should trigger resume flow using command only for 22000 family 3016 * AX210 and above don't need the command since they have 3017 * the doorbell interrupt. 3018 */ 3019 if (mvm->trans->trans_cfg->device_family <= IWL_DEVICE_FAMILY_22000 && 3020 fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_D0I3_END_FIRST)) { 3021 ret = iwl_mvm_send_cmd(mvm, &cmd); 3022 if (ret < 0) 3023 IWL_ERR(mvm, "Failed to send D0I3_END_CMD first (%d)\n", 3024 ret); 3025 } 3026 3027 return ret; 3028 } 3029 3030 #define IWL_MVM_D3_NOTIF_TIMEOUT (HZ / 5) 3031 3032 static int iwl_mvm_d3_notif_wait(struct iwl_mvm *mvm, 3033 struct iwl_d3_data *d3_data) 3034 { 3035 static const u16 d3_resume_notif[] = { 3036 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION), 3037 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION), 3038 WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF), 3039 WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION) 3040 }; 3041 struct iwl_notification_wait wait_d3_notif; 3042 int ret; 3043 3044 iwl_init_notification_wait(&mvm->notif_wait, &wait_d3_notif, 3045 d3_resume_notif, ARRAY_SIZE(d3_resume_notif), 3046 iwl_mvm_wait_d3_notif, d3_data); 3047 3048 ret = iwl_mvm_resume_firmware(mvm, d3_data->test); 3049 if (ret) { 3050 iwl_remove_notification(&mvm->notif_wait, &wait_d3_notif); 3051 return ret; 3052 } 3053 3054 return iwl_wait_notification(&mvm->notif_wait, &wait_d3_notif, 3055 IWL_MVM_D3_NOTIF_TIMEOUT); 3056 } 3057 3058 static inline bool iwl_mvm_d3_resume_notif_based(struct iwl_mvm *mvm) 3059 { 3060 return iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3061 WOWLAN_INFO_NOTIFICATION, 0) && 3062 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3063 WOWLAN_WAKE_PKT_NOTIFICATION, 0) && 3064 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3065 D3_END_NOTIFICATION, 0); 3066 } 3067 3068 static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test) 3069 { 3070 struct ieee80211_vif *vif = NULL; 3071 int ret = 1; 3072 struct iwl_mvm_nd_results results = {}; 3073 struct iwl_d3_data d3_data = { 3074 .test = test, 3075 .notif_expected = 3076 IWL_D3_NOTIF_WOWLAN_INFO | 3077 IWL_D3_NOTIF_D3_END_NOTIF, 3078 .nd_results_valid = false, 3079 .nd_results = &results, 3080 }; 3081 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 3082 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 3083 bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa, 3084 IWL_UCODE_TLV_CAPA_D0I3_END_FIRST); 3085 bool resume_notif_based = iwl_mvm_d3_resume_notif_based(mvm); 3086 bool keep = false; 3087 3088 mutex_lock(&mvm->mutex); 3089 3090 mvm->last_reset_or_resume_time_jiffies = jiffies; 3091 3092 /* get the BSS vif pointer again */ 3093 vif = iwl_mvm_get_bss_vif(mvm); 3094 if (IS_ERR_OR_NULL(vif)) 3095 goto err; 3096 3097 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt); 3098 3099 if (iwl_mvm_check_rt_status(mvm, vif)) { 3100 set_bit(STATUS_FW_ERROR, &mvm->trans->status); 3101 iwl_mvm_dump_nic_error_log(mvm); 3102 iwl_dbg_tlv_time_point(&mvm->fwrt, 3103 IWL_FW_INI_TIME_POINT_FW_ASSERT, NULL); 3104 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert, 3105 false, 0); 3106 ret = 1; 3107 goto err; 3108 } 3109 3110 if (resume_notif_based) { 3111 d3_data.status = kzalloc(sizeof(*d3_data.status), GFP_KERNEL); 3112 if (!d3_data.status) { 3113 IWL_ERR(mvm, "Failed to allocate wowlan status\n"); 3114 ret = -ENOMEM; 3115 goto err; 3116 } 3117 3118 ret = iwl_mvm_d3_notif_wait(mvm, &d3_data); 3119 if (ret) 3120 goto err; 3121 } else { 3122 ret = iwl_mvm_resume_firmware(mvm, test); 3123 if (ret < 0) 3124 goto err; 3125 } 3126 3127 /* after the successful handshake, we're out of D3 */ 3128 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED; 3129 3130 /* when reset is required we can't send these following commands */ 3131 if (d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE) 3132 goto query_wakeup_reasons; 3133 3134 /* 3135 * Query the current location and source from the D3 firmware so we 3136 * can play it back when we re-intiailize the D0 firmware 3137 */ 3138 iwl_mvm_update_changed_regdom(mvm); 3139 3140 /* Re-configure PPAG settings */ 3141 iwl_mvm_ppag_send_cmd(mvm); 3142 3143 if (!unified_image) 3144 /* Re-configure default SAR profile */ 3145 iwl_mvm_sar_select_profile(mvm, 1, 1); 3146 3147 if (mvm->net_detect && unified_image) { 3148 /* If this is a non-unified image, we restart the FW, 3149 * so no need to stop the netdetect scan. If that 3150 * fails, continue and try to get the wake-up reasons, 3151 * but trigger a HW restart by keeping a failure code 3152 * in ret. 3153 */ 3154 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT, 3155 false); 3156 } 3157 3158 query_wakeup_reasons: 3159 keep = iwl_mvm_choose_query_wakeup_reasons(mvm, vif, &d3_data); 3160 /* has unlocked the mutex, so skip that */ 3161 goto out; 3162 3163 err: 3164 mutex_unlock(&mvm->mutex); 3165 out: 3166 if (d3_data.status) 3167 kfree(d3_data.status->wake_packet); 3168 kfree(d3_data.status); 3169 iwl_mvm_free_nd(mvm); 3170 3171 if (!d3_data.test && !mvm->net_detect) 3172 ieee80211_iterate_active_interfaces_mtx(mvm->hw, 3173 IEEE80211_IFACE_ITER_NORMAL, 3174 iwl_mvm_d3_disconnect_iter, 3175 keep ? vif : NULL); 3176 3177 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 3178 3179 /* no need to reset the device in unified images, if successful */ 3180 if (unified_image && !ret) { 3181 /* nothing else to do if we already sent D0I3_END_CMD */ 3182 if (d0i3_first) 3183 return 0; 3184 3185 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3186 D3_END_NOTIFICATION, 0)) { 3187 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL); 3188 if (!ret) 3189 return 0; 3190 } else if (!(d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)) { 3191 return 0; 3192 } 3193 } 3194 3195 /* 3196 * Reconfigure the device in one of the following cases: 3197 * 1. We are not using a unified image 3198 * 2. We are using a unified image but had an error while exiting D3 3199 */ 3200 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); 3201 3202 /* regardless of what happened, we're now out of D3 */ 3203 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED; 3204 3205 return 1; 3206 } 3207 3208 int iwl_mvm_resume(struct ieee80211_hw *hw) 3209 { 3210 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3211 int ret; 3212 3213 ret = __iwl_mvm_resume(mvm, false); 3214 3215 iwl_mvm_resume_tcm(mvm); 3216 3217 iwl_fw_runtime_resume(&mvm->fwrt); 3218 3219 return ret; 3220 } 3221 3222 void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled) 3223 { 3224 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3225 3226 device_set_wakeup_enable(mvm->trans->dev, enabled); 3227 } 3228 3229 #ifdef CONFIG_IWLWIFI_DEBUGFS 3230 static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file) 3231 { 3232 struct iwl_mvm *mvm = inode->i_private; 3233 int err; 3234 3235 if (mvm->d3_test_active) 3236 return -EBUSY; 3237 3238 file->private_data = inode->i_private; 3239 3240 iwl_mvm_pause_tcm(mvm, true); 3241 3242 iwl_fw_runtime_suspend(&mvm->fwrt); 3243 3244 /* start pseudo D3 */ 3245 rtnl_lock(); 3246 wiphy_lock(mvm->hw->wiphy); 3247 err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true); 3248 wiphy_unlock(mvm->hw->wiphy); 3249 rtnl_unlock(); 3250 if (err > 0) 3251 err = -EINVAL; 3252 if (err) 3253 return err; 3254 3255 mvm->d3_test_active = true; 3256 mvm->keep_vif = NULL; 3257 return 0; 3258 } 3259 3260 static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf, 3261 size_t count, loff_t *ppos) 3262 { 3263 struct iwl_mvm *mvm = file->private_data; 3264 u32 pme_asserted; 3265 3266 while (true) { 3267 /* read pme_ptr if available */ 3268 if (mvm->d3_test_pme_ptr) { 3269 pme_asserted = iwl_trans_read_mem32(mvm->trans, 3270 mvm->d3_test_pme_ptr); 3271 if (pme_asserted) 3272 break; 3273 } 3274 3275 if (msleep_interruptible(100)) 3276 break; 3277 } 3278 3279 return 0; 3280 } 3281 3282 static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac, 3283 struct ieee80211_vif *vif) 3284 { 3285 /* skip the one we keep connection on */ 3286 if (_data == vif) 3287 return; 3288 3289 if (vif->type == NL80211_IFTYPE_STATION) 3290 ieee80211_connection_loss(vif); 3291 } 3292 3293 static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file) 3294 { 3295 struct iwl_mvm *mvm = inode->i_private; 3296 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 3297 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 3298 3299 mvm->d3_test_active = false; 3300 3301 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt); 3302 3303 rtnl_lock(); 3304 wiphy_lock(mvm->hw->wiphy); 3305 __iwl_mvm_resume(mvm, true); 3306 wiphy_unlock(mvm->hw->wiphy); 3307 rtnl_unlock(); 3308 3309 iwl_mvm_resume_tcm(mvm); 3310 3311 iwl_fw_runtime_resume(&mvm->fwrt); 3312 3313 iwl_abort_notification_waits(&mvm->notif_wait); 3314 if (!unified_image) { 3315 int remaining_time = 10; 3316 3317 ieee80211_restart_hw(mvm->hw); 3318 3319 /* wait for restart and disconnect all interfaces */ 3320 while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 3321 remaining_time > 0) { 3322 remaining_time--; 3323 msleep(1000); 3324 } 3325 3326 if (remaining_time == 0) 3327 IWL_ERR(mvm, "Timed out waiting for HW restart!\n"); 3328 } 3329 3330 ieee80211_iterate_active_interfaces_atomic( 3331 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 3332 iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif); 3333 3334 return 0; 3335 } 3336 3337 const struct file_operations iwl_dbgfs_d3_test_ops = { 3338 .llseek = no_llseek, 3339 .open = iwl_mvm_d3_test_open, 3340 .read = iwl_mvm_d3_test_read, 3341 .release = iwl_mvm_d3_test_release, 3342 }; 3343 #endif 3344