1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2014, 2018-2022 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 = kmalloc(sizeof(*data.rsc), GFP_KERNEL); 465 if (!data.rsc) 466 return -ENOMEM; 467 468 memset(data.rsc, 0xff, sizeof(*data.rsc)); 469 470 for (i = 0; i < ARRAY_SIZE(data.rsc->mcast_key_id_map); i++) 471 data.rsc->mcast_key_id_map[i] = 472 IWL_MCAST_KEY_MAP_INVALID; 473 data.rsc->sta_id = cpu_to_le32(mvmvif->ap_sta_id); 474 475 ieee80211_iter_keys(mvm->hw, vif, 476 iwl_mvm_wowlan_get_rsc_v5_data, 477 &data); 478 479 if (data.have_rsc) 480 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM, 481 CMD_ASYNC, sizeof(*data.rsc), 482 data.rsc); 483 else 484 ret = 0; 485 kfree(data.rsc); 486 } else if (ver == 4 || ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN) { 487 struct wowlan_key_rsc_tsc_data data = {}; 488 int size; 489 490 data.rsc_tsc = kzalloc(sizeof(*data.rsc_tsc), GFP_KERNEL); 491 if (!data.rsc_tsc) 492 return -ENOMEM; 493 494 if (ver == 4) { 495 size = sizeof(*data.rsc_tsc); 496 data.rsc_tsc->sta_id = cpu_to_le32(mvmvif->ap_sta_id); 497 } else { 498 /* ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN */ 499 size = sizeof(data.rsc_tsc->params); 500 } 501 502 ieee80211_iter_keys(mvm->hw, vif, 503 iwl_mvm_wowlan_get_rsc_tsc_data, 504 &data); 505 506 if (data.have_rsc_tsc) 507 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM, 508 CMD_ASYNC, size, 509 data.rsc_tsc); 510 else 511 ret = 0; 512 kfree(data.rsc_tsc); 513 } else { 514 ret = 0; 515 WARN_ON_ONCE(1); 516 } 517 518 return ret; 519 } 520 521 struct wowlan_key_tkip_data { 522 struct iwl_wowlan_tkip_params_cmd tkip; 523 bool have_tkip_keys; 524 }; 525 526 static void iwl_mvm_wowlan_get_tkip_data(struct ieee80211_hw *hw, 527 struct ieee80211_vif *vif, 528 struct ieee80211_sta *sta, 529 struct ieee80211_key_conf *key, 530 void *_data) 531 { 532 struct wowlan_key_tkip_data *data = _data; 533 struct iwl_p1k_cache *rx_p1ks; 534 u8 *rx_mic_key; 535 struct ieee80211_key_seq seq; 536 u32 cur_rx_iv32 = 0; 537 u16 p1k[IWL_P1K_SIZE]; 538 int i; 539 540 switch (key->cipher) { 541 default: 542 break; 543 case WLAN_CIPHER_SUITE_TKIP: 544 if (sta) { 545 u64 pn64; 546 547 rx_p1ks = data->tkip.rx_uni; 548 549 pn64 = atomic64_read(&key->tx_pn); 550 551 ieee80211_get_tkip_p1k_iv(key, TKIP_PN_TO_IV32(pn64), 552 p1k); 553 iwl_mvm_convert_p1k(p1k, data->tkip.tx.p1k); 554 555 memcpy(data->tkip.mic_keys.tx, 556 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], 557 IWL_MIC_KEY_SIZE); 558 559 rx_mic_key = data->tkip.mic_keys.rx_unicast; 560 } else { 561 rx_p1ks = data->tkip.rx_multi; 562 rx_mic_key = data->tkip.mic_keys.rx_mcast; 563 } 564 565 for (i = 0; i < IWL_NUM_RSC; i++) { 566 /* wrapping isn't allowed, AP must rekey */ 567 if (seq.tkip.iv32 > cur_rx_iv32) 568 cur_rx_iv32 = seq.tkip.iv32; 569 } 570 571 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid, 572 cur_rx_iv32, p1k); 573 iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k); 574 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid, 575 cur_rx_iv32 + 1, p1k); 576 iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k); 577 578 memcpy(rx_mic_key, 579 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], 580 IWL_MIC_KEY_SIZE); 581 582 data->have_tkip_keys = true; 583 break; 584 } 585 } 586 587 struct wowlan_key_gtk_type_iter { 588 struct iwl_wowlan_kek_kck_material_cmd_v4 *kek_kck_cmd; 589 }; 590 591 static void iwl_mvm_wowlan_gtk_type_iter(struct ieee80211_hw *hw, 592 struct ieee80211_vif *vif, 593 struct ieee80211_sta *sta, 594 struct ieee80211_key_conf *key, 595 void *_data) 596 { 597 struct wowlan_key_gtk_type_iter *data = _data; 598 599 switch (key->cipher) { 600 default: 601 return; 602 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 603 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 604 data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_GCMP); 605 return; 606 case WLAN_CIPHER_SUITE_AES_CMAC: 607 data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_CCM); 608 return; 609 case WLAN_CIPHER_SUITE_CCMP: 610 if (!sta) 611 data->kek_kck_cmd->gtk_cipher = 612 cpu_to_le32(STA_KEY_FLG_CCM); 613 break; 614 case WLAN_CIPHER_SUITE_GCMP: 615 case WLAN_CIPHER_SUITE_GCMP_256: 616 if (!sta) 617 data->kek_kck_cmd->gtk_cipher = 618 cpu_to_le32(STA_KEY_FLG_GCMP); 619 break; 620 } 621 } 622 623 static int iwl_mvm_send_patterns_v1(struct iwl_mvm *mvm, 624 struct cfg80211_wowlan *wowlan) 625 { 626 struct iwl_wowlan_patterns_cmd_v1 *pattern_cmd; 627 struct iwl_host_cmd cmd = { 628 .id = WOWLAN_PATTERNS, 629 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 630 }; 631 int i, err; 632 633 if (!wowlan->n_patterns) 634 return 0; 635 636 cmd.len[0] = struct_size(pattern_cmd, patterns, wowlan->n_patterns); 637 638 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL); 639 if (!pattern_cmd) 640 return -ENOMEM; 641 642 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns); 643 644 for (i = 0; i < wowlan->n_patterns; i++) { 645 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8); 646 647 memcpy(&pattern_cmd->patterns[i].mask, 648 wowlan->patterns[i].mask, mask_len); 649 memcpy(&pattern_cmd->patterns[i].pattern, 650 wowlan->patterns[i].pattern, 651 wowlan->patterns[i].pattern_len); 652 pattern_cmd->patterns[i].mask_size = mask_len; 653 pattern_cmd->patterns[i].pattern_size = 654 wowlan->patterns[i].pattern_len; 655 } 656 657 cmd.data[0] = pattern_cmd; 658 err = iwl_mvm_send_cmd(mvm, &cmd); 659 kfree(pattern_cmd); 660 return err; 661 } 662 663 static int iwl_mvm_send_patterns(struct iwl_mvm *mvm, 664 struct ieee80211_vif *vif, 665 struct cfg80211_wowlan *wowlan) 666 { 667 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 668 struct iwl_wowlan_patterns_cmd *pattern_cmd; 669 struct iwl_host_cmd cmd = { 670 .id = WOWLAN_PATTERNS, 671 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 672 }; 673 int i, err; 674 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id, 675 IWL_FW_CMD_VER_UNKNOWN); 676 677 if (!wowlan->n_patterns) 678 return 0; 679 680 cmd.len[0] = sizeof(*pattern_cmd) + 681 wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern_v2); 682 683 pattern_cmd = kzalloc(cmd.len[0], GFP_KERNEL); 684 if (!pattern_cmd) 685 return -ENOMEM; 686 687 pattern_cmd->n_patterns = wowlan->n_patterns; 688 if (ver >= 3) 689 pattern_cmd->sta_id = mvmvif->ap_sta_id; 690 691 for (i = 0; i < wowlan->n_patterns; i++) { 692 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8); 693 694 pattern_cmd->patterns[i].pattern_type = 695 WOWLAN_PATTERN_TYPE_BITMASK; 696 697 memcpy(&pattern_cmd->patterns[i].u.bitmask.mask, 698 wowlan->patterns[i].mask, mask_len); 699 memcpy(&pattern_cmd->patterns[i].u.bitmask.pattern, 700 wowlan->patterns[i].pattern, 701 wowlan->patterns[i].pattern_len); 702 pattern_cmd->patterns[i].u.bitmask.mask_size = mask_len; 703 pattern_cmd->patterns[i].u.bitmask.pattern_size = 704 wowlan->patterns[i].pattern_len; 705 } 706 707 cmd.data[0] = pattern_cmd; 708 err = iwl_mvm_send_cmd(mvm, &cmd); 709 kfree(pattern_cmd); 710 return err; 711 } 712 713 static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 714 struct ieee80211_sta *ap_sta) 715 { 716 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 717 struct ieee80211_chanctx_conf *ctx; 718 u8 chains_static, chains_dynamic; 719 struct cfg80211_chan_def chandef; 720 int ret, i; 721 struct iwl_binding_cmd_v1 binding_cmd = {}; 722 struct iwl_time_quota_cmd quota_cmd = {}; 723 struct iwl_time_quota_data *quota; 724 u32 status; 725 726 if (WARN_ON_ONCE(iwl_mvm_is_cdb_supported(mvm))) 727 return -EINVAL; 728 729 /* add back the PHY */ 730 if (WARN_ON(!mvmvif->phy_ctxt)) 731 return -EINVAL; 732 733 rcu_read_lock(); 734 ctx = rcu_dereference(vif->bss_conf.chanctx_conf); 735 if (WARN_ON(!ctx)) { 736 rcu_read_unlock(); 737 return -EINVAL; 738 } 739 chandef = ctx->def; 740 chains_static = ctx->rx_chains_static; 741 chains_dynamic = ctx->rx_chains_dynamic; 742 rcu_read_unlock(); 743 744 ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt, &chandef, 745 chains_static, chains_dynamic); 746 if (ret) 747 return ret; 748 749 /* add back the MAC */ 750 mvmvif->uploaded = false; 751 752 if (WARN_ON(!vif->cfg.assoc)) 753 return -EINVAL; 754 755 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 756 if (ret) 757 return ret; 758 759 /* add back binding - XXX refactor? */ 760 binding_cmd.id_and_color = 761 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id, 762 mvmvif->phy_ctxt->color)); 763 binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD); 764 binding_cmd.phy = 765 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id, 766 mvmvif->phy_ctxt->color)); 767 binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 768 mvmvif->color)); 769 for (i = 1; i < MAX_MACS_IN_BINDING; i++) 770 binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID); 771 772 status = 0; 773 ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD, 774 IWL_BINDING_CMD_SIZE_V1, &binding_cmd, 775 &status); 776 if (ret) { 777 IWL_ERR(mvm, "Failed to add binding: %d\n", ret); 778 return ret; 779 } 780 781 if (status) { 782 IWL_ERR(mvm, "Binding command failed: %u\n", status); 783 return -EIO; 784 } 785 786 ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false, 0); 787 if (ret) 788 return ret; 789 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], ap_sta); 790 791 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 792 if (ret) 793 return ret; 794 795 /* and some quota */ 796 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, 0); 797 quota->id_and_color = 798 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id, 799 mvmvif->phy_ctxt->color)); 800 quota->quota = cpu_to_le32(IWL_MVM_MAX_QUOTA); 801 quota->max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA); 802 803 for (i = 1; i < MAX_BINDINGS; i++) { 804 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, i); 805 quota->id_and_color = cpu_to_le32(FW_CTXT_INVALID); 806 } 807 808 ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0, 809 iwl_mvm_quota_cmd_size(mvm), "a_cmd); 810 if (ret) 811 IWL_ERR(mvm, "Failed to send quota: %d\n", ret); 812 813 if (iwl_mvm_is_lar_supported(mvm) && iwl_mvm_init_fw_regd(mvm)) 814 IWL_ERR(mvm, "Failed to initialize D3 LAR information\n"); 815 816 return 0; 817 } 818 819 static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm, 820 struct ieee80211_vif *vif) 821 { 822 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 823 struct iwl_nonqos_seq_query_cmd query_cmd = { 824 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET), 825 .mac_id_n_color = 826 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 827 mvmvif->color)), 828 }; 829 struct iwl_host_cmd cmd = { 830 .id = NON_QOS_TX_COUNTER_CMD, 831 .flags = CMD_WANT_SKB, 832 }; 833 int err; 834 u32 size; 835 836 cmd.data[0] = &query_cmd; 837 cmd.len[0] = sizeof(query_cmd); 838 839 err = iwl_mvm_send_cmd(mvm, &cmd); 840 if (err) 841 return err; 842 843 size = iwl_rx_packet_payload_len(cmd.resp_pkt); 844 if (size < sizeof(__le16)) { 845 err = -EINVAL; 846 } else { 847 err = le16_to_cpup((__le16 *)cmd.resp_pkt->data); 848 /* firmware returns next, not last-used seqno */ 849 err = (u16) (err - 0x10); 850 } 851 852 iwl_free_resp(&cmd); 853 return err; 854 } 855 856 void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 857 { 858 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 859 struct iwl_nonqos_seq_query_cmd query_cmd = { 860 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET), 861 .mac_id_n_color = 862 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 863 mvmvif->color)), 864 .value = cpu_to_le16(mvmvif->seqno), 865 }; 866 867 /* return if called during restart, not resume from D3 */ 868 if (!mvmvif->seqno_valid) 869 return; 870 871 mvmvif->seqno_valid = false; 872 873 if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0, 874 sizeof(query_cmd), &query_cmd)) 875 IWL_ERR(mvm, "failed to set non-QoS seqno\n"); 876 } 877 878 static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm) 879 { 880 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 881 882 iwl_mvm_stop_device(mvm); 883 /* 884 * Set the HW restart bit -- this is mostly true as we're 885 * going to load new firmware and reprogram that, though 886 * the reprogramming is going to be manual to avoid adding 887 * all the MACs that aren't support. 888 * We don't have to clear up everything though because the 889 * reprogramming is manual. When we resume, we'll actually 890 * go through a proper restart sequence again to switch 891 * back to the runtime firmware image. 892 */ 893 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 894 895 /* the fw is reset, so all the keys are cleared */ 896 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); 897 898 mvm->ptk_ivlen = 0; 899 mvm->ptk_icvlen = 0; 900 mvm->ptk_ivlen = 0; 901 mvm->ptk_icvlen = 0; 902 903 return iwl_mvm_load_d3_fw(mvm); 904 } 905 906 static int 907 iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm, 908 struct cfg80211_wowlan *wowlan, 909 struct iwl_wowlan_config_cmd *wowlan_config_cmd, 910 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif, 911 struct ieee80211_sta *ap_sta) 912 { 913 struct iwl_mvm_sta *mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta); 914 915 /* TODO: wowlan_config_cmd->wowlan_ba_teardown_tids */ 916 917 wowlan_config_cmd->is_11n_connection = 918 ap_sta->deflink.ht_cap.ht_supported; 919 wowlan_config_cmd->flags = ENABLE_L3_FILTERING | 920 ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING; 921 922 if (iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_CONFIGURATION, 0) < 6) { 923 /* Query the last used seqno and set it */ 924 int ret = iwl_mvm_get_last_nonqos_seq(mvm, vif); 925 926 if (ret < 0) 927 return ret; 928 929 wowlan_config_cmd->non_qos_seq = cpu_to_le16(ret); 930 } 931 932 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, wowlan_config_cmd); 933 934 if (wowlan->disconnect) 935 wowlan_config_cmd->wakeup_filter |= 936 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS | 937 IWL_WOWLAN_WAKEUP_LINK_CHANGE); 938 if (wowlan->magic_pkt) 939 wowlan_config_cmd->wakeup_filter |= 940 cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET); 941 if (wowlan->gtk_rekey_failure) 942 wowlan_config_cmd->wakeup_filter |= 943 cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL); 944 if (wowlan->eap_identity_req) 945 wowlan_config_cmd->wakeup_filter |= 946 cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ); 947 if (wowlan->four_way_handshake) 948 wowlan_config_cmd->wakeup_filter |= 949 cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE); 950 if (wowlan->n_patterns) 951 wowlan_config_cmd->wakeup_filter |= 952 cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH); 953 954 if (wowlan->rfkill_release) 955 wowlan_config_cmd->wakeup_filter |= 956 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT); 957 958 if (wowlan->tcp) { 959 /* 960 * Set the "link change" (really "link lost") flag as well 961 * since that implies losing the TCP connection. 962 */ 963 wowlan_config_cmd->wakeup_filter |= 964 cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS | 965 IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE | 966 IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET | 967 IWL_WOWLAN_WAKEUP_LINK_CHANGE); 968 } 969 970 if (wowlan->any) { 971 wowlan_config_cmd->wakeup_filter |= 972 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS | 973 IWL_WOWLAN_WAKEUP_LINK_CHANGE | 974 IWL_WOWLAN_WAKEUP_RX_FRAME | 975 IWL_WOWLAN_WAKEUP_BCN_FILTERING); 976 } 977 978 return 0; 979 } 980 981 static int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm, 982 struct ieee80211_vif *vif) 983 { 984 bool unified = fw_has_capa(&mvm->fw->ucode_capa, 985 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 986 struct wowlan_key_reprogram_data key_data = {}; 987 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 988 int ret; 989 u8 cmd_ver; 990 size_t cmd_size; 991 992 if (!unified) { 993 /* 994 * if we have to configure keys, call ieee80211_iter_keys(), 995 * as we need non-atomic context in order to take the 996 * required locks. 997 */ 998 /* 999 * Note that currently we don't use CMD_ASYNC in the iterator. 1000 * In case of key_data.configure_keys, all the configured 1001 * commands are SYNC, and iwl_mvm_wowlan_program_keys() will 1002 * take care of locking/unlocking mvm->mutex. 1003 */ 1004 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_program_keys, 1005 &key_data); 1006 1007 if (key_data.error) 1008 return -EIO; 1009 } 1010 1011 ret = iwl_mvm_wowlan_config_rsc_tsc(mvm, vif); 1012 if (ret) 1013 return ret; 1014 1015 if (!fw_has_api(&mvm->fw->ucode_capa, 1016 IWL_UCODE_TLV_API_TKIP_MIC_KEYS)) { 1017 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TKIP_PARAM, 1018 IWL_FW_CMD_VER_UNKNOWN); 1019 struct wowlan_key_tkip_data tkip_data = {}; 1020 int size; 1021 1022 if (ver == 2) { 1023 size = sizeof(tkip_data.tkip); 1024 tkip_data.tkip.sta_id = 1025 cpu_to_le32(mvmvif->ap_sta_id); 1026 } else if (ver == 1 || ver == IWL_FW_CMD_VER_UNKNOWN) { 1027 size = sizeof(struct iwl_wowlan_tkip_params_cmd_ver_1); 1028 } else { 1029 WARN_ON_ONCE(1); 1030 return -EINVAL; 1031 } 1032 1033 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_get_tkip_data, 1034 &tkip_data); 1035 1036 if (tkip_data.have_tkip_keys) { 1037 /* send relevant data according to CMD version */ 1038 ret = iwl_mvm_send_cmd_pdu(mvm, 1039 WOWLAN_TKIP_PARAM, 1040 CMD_ASYNC, size, 1041 &tkip_data.tkip); 1042 if (ret) 1043 return ret; 1044 } 1045 } 1046 1047 /* configure rekey data only if offloaded rekey is supported (d3) */ 1048 if (mvmvif->rekey_data.valid) { 1049 struct iwl_wowlan_kek_kck_material_cmd_v4 kek_kck_cmd = {}; 1050 struct iwl_wowlan_kek_kck_material_cmd_v4 *_kek_kck_cmd = 1051 &kek_kck_cmd; 1052 struct wowlan_key_gtk_type_iter gtk_type_data = { 1053 .kek_kck_cmd = _kek_kck_cmd, 1054 }; 1055 1056 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, 1057 WOWLAN_KEK_KCK_MATERIAL, 1058 IWL_FW_CMD_VER_UNKNOWN); 1059 if (WARN_ON(cmd_ver != 2 && cmd_ver != 3 && cmd_ver != 4 && 1060 cmd_ver != IWL_FW_CMD_VER_UNKNOWN)) 1061 return -EINVAL; 1062 1063 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_gtk_type_iter, 1064 >k_type_data); 1065 1066 memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck, 1067 mvmvif->rekey_data.kck_len); 1068 kek_kck_cmd.kck_len = cpu_to_le16(mvmvif->rekey_data.kck_len); 1069 memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek, 1070 mvmvif->rekey_data.kek_len); 1071 kek_kck_cmd.kek_len = cpu_to_le16(mvmvif->rekey_data.kek_len); 1072 kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr; 1073 kek_kck_cmd.akm = cpu_to_le32(mvmvif->rekey_data.akm); 1074 kek_kck_cmd.sta_id = cpu_to_le32(mvmvif->ap_sta_id); 1075 1076 if (cmd_ver == 4) { 1077 cmd_size = sizeof(struct iwl_wowlan_kek_kck_material_cmd_v4); 1078 } else { 1079 if (cmd_ver == 3) 1080 cmd_size = 1081 sizeof(struct iwl_wowlan_kek_kck_material_cmd_v3); 1082 else 1083 cmd_size = 1084 sizeof(struct iwl_wowlan_kek_kck_material_cmd_v2); 1085 /* skip the sta_id at the beginning */ 1086 _kek_kck_cmd = (void *) 1087 ((u8 *)_kek_kck_cmd + sizeof(kek_kck_cmd.sta_id)); 1088 } 1089 1090 IWL_DEBUG_WOWLAN(mvm, "setting akm %d\n", 1091 mvmvif->rekey_data.akm); 1092 1093 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_KEK_KCK_MATERIAL, 1094 CMD_ASYNC, cmd_size, _kek_kck_cmd); 1095 if (ret) 1096 return ret; 1097 } 1098 1099 return 0; 1100 } 1101 1102 static int 1103 iwl_mvm_wowlan_config(struct iwl_mvm *mvm, 1104 struct cfg80211_wowlan *wowlan, 1105 struct iwl_wowlan_config_cmd *wowlan_config_cmd, 1106 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif, 1107 struct ieee80211_sta *ap_sta) 1108 { 1109 int ret; 1110 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 1111 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1112 1113 mvm->offload_tid = wowlan_config_cmd->offloading_tid; 1114 1115 if (!unified_image) { 1116 ret = iwl_mvm_switch_to_d3(mvm); 1117 if (ret) 1118 return ret; 1119 1120 ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta); 1121 if (ret) 1122 return ret; 1123 } 1124 1125 /* 1126 * This needs to be unlocked due to lock ordering 1127 * constraints. Since we're in the suspend path 1128 * that isn't really a problem though. 1129 */ 1130 mutex_unlock(&mvm->mutex); 1131 ret = iwl_mvm_wowlan_config_key_params(mvm, vif); 1132 mutex_lock(&mvm->mutex); 1133 if (ret) 1134 return ret; 1135 1136 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0, 1137 sizeof(*wowlan_config_cmd), 1138 wowlan_config_cmd); 1139 if (ret) 1140 return ret; 1141 1142 if (fw_has_api(&mvm->fw->ucode_capa, 1143 IWL_UCODE_TLV_API_WOWLAN_TCP_SYN_WAKE)) 1144 ret = iwl_mvm_send_patterns(mvm, vif, wowlan); 1145 else 1146 ret = iwl_mvm_send_patterns_v1(mvm, wowlan); 1147 if (ret) 1148 return ret; 1149 1150 return iwl_mvm_send_proto_offload(mvm, vif, false, true, 0); 1151 } 1152 1153 static int 1154 iwl_mvm_netdetect_config(struct iwl_mvm *mvm, 1155 struct cfg80211_wowlan *wowlan, 1156 struct cfg80211_sched_scan_request *nd_config, 1157 struct ieee80211_vif *vif) 1158 { 1159 int ret; 1160 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 1161 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1162 1163 if (!unified_image) { 1164 ret = iwl_mvm_switch_to_d3(mvm); 1165 if (ret) 1166 return ret; 1167 } else { 1168 /* In theory, we wouldn't have to stop a running sched 1169 * scan in order to start another one (for 1170 * net-detect). But in practice this doesn't seem to 1171 * work properly, so stop any running sched_scan now. 1172 */ 1173 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 1174 if (ret) 1175 return ret; 1176 } 1177 1178 ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies, 1179 IWL_MVM_SCAN_NETDETECT); 1180 if (ret) 1181 return ret; 1182 1183 if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels)) 1184 return -EBUSY; 1185 1186 /* save the sched scan matchsets... */ 1187 if (nd_config->n_match_sets) { 1188 mvm->nd_match_sets = kmemdup(nd_config->match_sets, 1189 sizeof(*nd_config->match_sets) * 1190 nd_config->n_match_sets, 1191 GFP_KERNEL); 1192 if (mvm->nd_match_sets) 1193 mvm->n_nd_match_sets = nd_config->n_match_sets; 1194 } 1195 1196 /* ...and the sched scan channels for later reporting */ 1197 mvm->nd_channels = kmemdup(nd_config->channels, 1198 sizeof(*nd_config->channels) * 1199 nd_config->n_channels, 1200 GFP_KERNEL); 1201 if (mvm->nd_channels) 1202 mvm->n_nd_channels = nd_config->n_channels; 1203 1204 return 0; 1205 } 1206 1207 static void iwl_mvm_free_nd(struct iwl_mvm *mvm) 1208 { 1209 kfree(mvm->nd_match_sets); 1210 mvm->nd_match_sets = NULL; 1211 mvm->n_nd_match_sets = 0; 1212 kfree(mvm->nd_channels); 1213 mvm->nd_channels = NULL; 1214 mvm->n_nd_channels = 0; 1215 } 1216 1217 static int __iwl_mvm_suspend(struct ieee80211_hw *hw, 1218 struct cfg80211_wowlan *wowlan, 1219 bool test) 1220 { 1221 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1222 struct ieee80211_vif *vif = NULL; 1223 struct iwl_mvm_vif *mvmvif = NULL; 1224 struct ieee80211_sta *ap_sta = NULL; 1225 struct iwl_d3_manager_config d3_cfg_cmd_data = { 1226 /* 1227 * Program the minimum sleep time to 10 seconds, as many 1228 * platforms have issues processing a wakeup signal while 1229 * still being in the process of suspending. 1230 */ 1231 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000), 1232 }; 1233 struct iwl_host_cmd d3_cfg_cmd = { 1234 .id = D3_CONFIG_CMD, 1235 .flags = CMD_WANT_SKB | CMD_SEND_IN_D3, 1236 .data[0] = &d3_cfg_cmd_data, 1237 .len[0] = sizeof(d3_cfg_cmd_data), 1238 }; 1239 int ret; 1240 int len __maybe_unused; 1241 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 1242 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1243 1244 if (!wowlan) { 1245 /* 1246 * mac80211 shouldn't get here, but for D3 test 1247 * it doesn't warrant a warning 1248 */ 1249 WARN_ON(!test); 1250 return -EINVAL; 1251 } 1252 1253 mutex_lock(&mvm->mutex); 1254 1255 set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 1256 1257 synchronize_net(); 1258 1259 vif = iwl_mvm_get_bss_vif(mvm); 1260 if (IS_ERR_OR_NULL(vif)) { 1261 ret = 1; 1262 goto out_noreset; 1263 } 1264 1265 mvmvif = iwl_mvm_vif_from_mac80211(vif); 1266 1267 if (mvmvif->ap_sta_id == IWL_MVM_INVALID_STA) { 1268 /* if we're not associated, this must be netdetect */ 1269 if (!wowlan->nd_config) { 1270 ret = 1; 1271 goto out_noreset; 1272 } 1273 1274 ret = iwl_mvm_netdetect_config( 1275 mvm, wowlan, wowlan->nd_config, vif); 1276 if (ret) 1277 goto out; 1278 1279 mvm->net_detect = true; 1280 } else { 1281 struct iwl_wowlan_config_cmd wowlan_config_cmd = {}; 1282 1283 wowlan_config_cmd.sta_id = mvmvif->ap_sta_id; 1284 1285 ap_sta = rcu_dereference_protected( 1286 mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], 1287 lockdep_is_held(&mvm->mutex)); 1288 if (IS_ERR_OR_NULL(ap_sta)) { 1289 ret = -EINVAL; 1290 goto out_noreset; 1291 } 1292 1293 ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd, 1294 vif, mvmvif, ap_sta); 1295 if (ret) 1296 goto out_noreset; 1297 ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd, 1298 vif, mvmvif, ap_sta); 1299 if (ret) 1300 goto out; 1301 1302 mvm->net_detect = false; 1303 } 1304 1305 ret = iwl_mvm_power_update_device(mvm); 1306 if (ret) 1307 goto out; 1308 1309 ret = iwl_mvm_power_update_mac(mvm); 1310 if (ret) 1311 goto out; 1312 1313 #ifdef CONFIG_IWLWIFI_DEBUGFS 1314 if (mvm->d3_wake_sysassert) 1315 d3_cfg_cmd_data.wakeup_flags |= 1316 cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR); 1317 #endif 1318 1319 /* 1320 * Prior to 9000 device family the driver needs to stop the dbg 1321 * recording before entering D3. In later devices the FW stops the 1322 * recording automatically. 1323 */ 1324 if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_9000) 1325 iwl_fw_dbg_stop_restart_recording(&mvm->fwrt, NULL, true); 1326 1327 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_D3; 1328 1329 /* must be last -- this switches firmware state */ 1330 ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd); 1331 if (ret) 1332 goto out; 1333 #ifdef CONFIG_IWLWIFI_DEBUGFS 1334 len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt); 1335 if (len >= sizeof(u32)) { 1336 mvm->d3_test_pme_ptr = 1337 le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data); 1338 } 1339 #endif 1340 iwl_free_resp(&d3_cfg_cmd); 1341 1342 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1343 1344 ret = iwl_trans_d3_suspend(mvm->trans, test, !unified_image); 1345 out: 1346 if (ret < 0) { 1347 iwl_mvm_free_nd(mvm); 1348 1349 if (!unified_image) { 1350 if (mvm->fw_restart > 0) { 1351 mvm->fw_restart--; 1352 ieee80211_restart_hw(mvm->hw); 1353 } 1354 } 1355 1356 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 1357 } 1358 out_noreset: 1359 mutex_unlock(&mvm->mutex); 1360 1361 return ret; 1362 } 1363 1364 int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) 1365 { 1366 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1367 1368 iwl_mvm_pause_tcm(mvm, true); 1369 1370 iwl_fw_runtime_suspend(&mvm->fwrt); 1371 1372 return __iwl_mvm_suspend(hw, wowlan, false); 1373 } 1374 1375 /* converted data from the different status responses */ 1376 struct iwl_wowlan_status_data { 1377 u64 replay_ctr; 1378 u32 num_of_gtk_rekeys; 1379 u32 received_beacons; 1380 u32 wakeup_reasons; 1381 u32 wake_packet_length; 1382 u32 wake_packet_bufsize; 1383 u16 pattern_number; 1384 u16 non_qos_seq_ctr; 1385 u16 qos_seq_ctr[8]; 1386 u8 tid_tear_down; 1387 1388 struct { 1389 /* including RX MIC key for TKIP */ 1390 u8 key[WOWLAN_KEY_MAX_SIZE]; 1391 u8 len; 1392 u8 flags; 1393 } gtk; 1394 1395 struct { 1396 /* 1397 * We store both the TKIP and AES representations 1398 * coming from the firmware because we decode the 1399 * data from there before we iterate the keys and 1400 * know which one we need. 1401 */ 1402 struct { 1403 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT]; 1404 } tkip, aes; 1405 1406 /* 1407 * We use -1 for when we have valid data but don't know 1408 * the key ID from firmware, and thus it needs to be 1409 * installed with the last key (depending on rekeying). 1410 */ 1411 s8 key_id; 1412 bool valid; 1413 } gtk_seq[2]; 1414 1415 struct { 1416 /* Same as above */ 1417 struct { 1418 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT]; 1419 u64 tx_pn; 1420 } tkip, aes; 1421 } ptk; 1422 1423 struct { 1424 u64 ipn; 1425 u8 key[WOWLAN_KEY_MAX_SIZE]; 1426 u8 len; 1427 u8 flags; 1428 } igtk; 1429 1430 u8 *wake_packet; 1431 }; 1432 1433 static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm, 1434 struct ieee80211_vif *vif, 1435 struct iwl_wowlan_status_data *status) 1436 { 1437 struct sk_buff *pkt = NULL; 1438 struct cfg80211_wowlan_wakeup wakeup = { 1439 .pattern_idx = -1, 1440 }; 1441 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; 1442 u32 reasons = status->wakeup_reasons; 1443 1444 if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) { 1445 wakeup_report = NULL; 1446 goto report; 1447 } 1448 1449 pm_wakeup_event(mvm->dev, 0); 1450 1451 if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET) 1452 wakeup.magic_pkt = true; 1453 1454 if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN) 1455 wakeup.pattern_idx = 1456 status->pattern_number; 1457 1458 if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 1459 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)) 1460 wakeup.disconnect = true; 1461 1462 if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE) 1463 wakeup.gtk_rekey_failure = true; 1464 1465 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 1466 wakeup.rfkill_release = true; 1467 1468 if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST) 1469 wakeup.eap_identity_req = true; 1470 1471 if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE) 1472 wakeup.four_way_handshake = true; 1473 1474 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS) 1475 wakeup.tcp_connlost = true; 1476 1477 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE) 1478 wakeup.tcp_nomoretokens = true; 1479 1480 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET) 1481 wakeup.tcp_match = true; 1482 1483 if (status->wake_packet) { 1484 int pktsize = status->wake_packet_bufsize; 1485 int pktlen = status->wake_packet_length; 1486 const u8 *pktdata = status->wake_packet; 1487 const struct ieee80211_hdr *hdr = (const void *)pktdata; 1488 int truncated = pktlen - pktsize; 1489 1490 /* this would be a firmware bug */ 1491 if (WARN_ON_ONCE(truncated < 0)) 1492 truncated = 0; 1493 1494 if (ieee80211_is_data(hdr->frame_control)) { 1495 int hdrlen = ieee80211_hdrlen(hdr->frame_control); 1496 int ivlen = 0, icvlen = 4; /* also FCS */ 1497 1498 pkt = alloc_skb(pktsize, GFP_KERNEL); 1499 if (!pkt) 1500 goto report; 1501 1502 skb_put_data(pkt, pktdata, hdrlen); 1503 pktdata += hdrlen; 1504 pktsize -= hdrlen; 1505 1506 if (ieee80211_has_protected(hdr->frame_control)) { 1507 /* 1508 * This is unlocked and using gtk_i(c)vlen, 1509 * but since everything is under RTNL still 1510 * that's not really a problem - changing 1511 * it would be difficult. 1512 */ 1513 if (is_multicast_ether_addr(hdr->addr1)) { 1514 ivlen = mvm->gtk_ivlen; 1515 icvlen += mvm->gtk_icvlen; 1516 } else { 1517 ivlen = mvm->ptk_ivlen; 1518 icvlen += mvm->ptk_icvlen; 1519 } 1520 } 1521 1522 /* if truncated, FCS/ICV is (partially) gone */ 1523 if (truncated >= icvlen) { 1524 icvlen = 0; 1525 truncated -= icvlen; 1526 } else { 1527 icvlen -= truncated; 1528 truncated = 0; 1529 } 1530 1531 pktsize -= ivlen + icvlen; 1532 pktdata += ivlen; 1533 1534 skb_put_data(pkt, pktdata, pktsize); 1535 1536 if (ieee80211_data_to_8023(pkt, vif->addr, vif->type)) 1537 goto report; 1538 wakeup.packet = pkt->data; 1539 wakeup.packet_present_len = pkt->len; 1540 wakeup.packet_len = pkt->len - truncated; 1541 wakeup.packet_80211 = false; 1542 } else { 1543 int fcslen = 4; 1544 1545 if (truncated >= 4) { 1546 truncated -= 4; 1547 fcslen = 0; 1548 } else { 1549 fcslen -= truncated; 1550 truncated = 0; 1551 } 1552 pktsize -= fcslen; 1553 wakeup.packet = status->wake_packet; 1554 wakeup.packet_present_len = pktsize; 1555 wakeup.packet_len = pktlen - truncated; 1556 wakeup.packet_80211 = true; 1557 } 1558 } 1559 1560 report: 1561 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); 1562 kfree_skb(pkt); 1563 } 1564 1565 static void iwl_mvm_le64_to_aes_seq(__le64 le_pn, struct ieee80211_key_seq *seq) 1566 { 1567 u64 pn = le64_to_cpu(le_pn); 1568 1569 seq->ccmp.pn[0] = pn >> 40; 1570 seq->ccmp.pn[1] = pn >> 32; 1571 seq->ccmp.pn[2] = pn >> 24; 1572 seq->ccmp.pn[3] = pn >> 16; 1573 seq->ccmp.pn[4] = pn >> 8; 1574 seq->ccmp.pn[5] = pn; 1575 } 1576 1577 static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc, 1578 struct ieee80211_key_seq *seq) 1579 { 1580 iwl_mvm_le64_to_aes_seq(sc->pn, seq); 1581 } 1582 1583 static void iwl_mvm_le64_to_tkip_seq(__le64 le_pn, struct ieee80211_key_seq *seq) 1584 { 1585 u64 pn = le64_to_cpu(le_pn); 1586 1587 seq->tkip.iv16 = (u16)pn; 1588 seq->tkip.iv32 = (u32)(pn >> 16); 1589 } 1590 1591 static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc, 1592 struct ieee80211_key_seq *seq) 1593 { 1594 seq->tkip.iv32 = le32_to_cpu(sc->iv32); 1595 seq->tkip.iv16 = le16_to_cpu(sc->iv16); 1596 } 1597 1598 static void iwl_mvm_set_key_rx_seq_tids(struct ieee80211_key_conf *key, 1599 struct ieee80211_key_seq *seq) 1600 { 1601 int tid; 1602 1603 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) 1604 ieee80211_set_key_rx_seq(key, tid, &seq[tid]); 1605 } 1606 1607 static void iwl_mvm_set_aes_ptk_rx_seq(struct iwl_mvm *mvm, 1608 struct iwl_wowlan_status_data *status, 1609 struct ieee80211_sta *sta, 1610 struct ieee80211_key_conf *key) 1611 { 1612 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1613 struct iwl_mvm_key_pn *ptk_pn; 1614 int tid; 1615 1616 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.aes.seq); 1617 1618 if (!iwl_mvm_has_new_rx_api(mvm)) 1619 return; 1620 1621 1622 rcu_read_lock(); 1623 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]); 1624 if (WARN_ON(!ptk_pn)) { 1625 rcu_read_unlock(); 1626 return; 1627 } 1628 1629 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1630 int i; 1631 1632 for (i = 1; i < mvm->trans->num_rx_queues; i++) 1633 memcpy(ptk_pn->q[i].pn[tid], 1634 status->ptk.aes.seq[tid].ccmp.pn, 1635 IEEE80211_CCMP_PN_LEN); 1636 } 1637 rcu_read_unlock(); 1638 } 1639 1640 static void iwl_mvm_convert_key_counters(struct iwl_wowlan_status_data *status, 1641 union iwl_all_tsc_rsc *sc) 1642 { 1643 int i; 1644 1645 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT); 1646 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC); 1647 1648 /* GTK RX counters */ 1649 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1650 iwl_mvm_tkip_sc_to_seq(&sc->tkip.multicast_rsc[i], 1651 &status->gtk_seq[0].tkip.seq[i]); 1652 iwl_mvm_aes_sc_to_seq(&sc->aes.multicast_rsc[i], 1653 &status->gtk_seq[0].aes.seq[i]); 1654 } 1655 status->gtk_seq[0].valid = true; 1656 status->gtk_seq[0].key_id = -1; 1657 1658 /* PTK TX counter */ 1659 status->ptk.tkip.tx_pn = (u64)le16_to_cpu(sc->tkip.tsc.iv16) | 1660 ((u64)le32_to_cpu(sc->tkip.tsc.iv32) << 16); 1661 status->ptk.aes.tx_pn = le64_to_cpu(sc->aes.tsc.pn); 1662 1663 /* PTK RX counters */ 1664 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1665 iwl_mvm_tkip_sc_to_seq(&sc->tkip.unicast_rsc[i], 1666 &status->ptk.tkip.seq[i]); 1667 iwl_mvm_aes_sc_to_seq(&sc->aes.unicast_rsc[i], 1668 &status->ptk.aes.seq[i]); 1669 } 1670 } 1671 1672 static void 1673 iwl_mvm_convert_key_counters_v5_gtk_seq(struct iwl_wowlan_status_data *status, 1674 struct iwl_wowlan_all_rsc_tsc_v5 *sc, 1675 unsigned int idx, unsigned int key_id) 1676 { 1677 int tid; 1678 1679 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1680 iwl_mvm_le64_to_tkip_seq(sc->mcast_rsc[idx][tid], 1681 &status->gtk_seq[idx].tkip.seq[tid]); 1682 iwl_mvm_le64_to_aes_seq(sc->mcast_rsc[idx][tid], 1683 &status->gtk_seq[idx].aes.seq[tid]); 1684 } 1685 1686 status->gtk_seq[idx].valid = true; 1687 status->gtk_seq[idx].key_id = key_id; 1688 } 1689 1690 static void 1691 iwl_mvm_convert_key_counters_v5(struct iwl_wowlan_status_data *status, 1692 struct iwl_wowlan_all_rsc_tsc_v5 *sc) 1693 { 1694 int i, tid; 1695 1696 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT); 1697 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC); 1698 BUILD_BUG_ON(ARRAY_SIZE(sc->mcast_rsc) != ARRAY_SIZE(status->gtk_seq)); 1699 1700 /* GTK RX counters */ 1701 for (i = 0; i < ARRAY_SIZE(sc->mcast_key_id_map); i++) { 1702 u8 entry = sc->mcast_key_id_map[i]; 1703 1704 if (entry < ARRAY_SIZE(sc->mcast_rsc)) 1705 iwl_mvm_convert_key_counters_v5_gtk_seq(status, sc, 1706 entry, i); 1707 } 1708 1709 /* PTK TX counters not needed, assigned in device */ 1710 1711 /* PTK RX counters */ 1712 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1713 iwl_mvm_le64_to_tkip_seq(sc->ucast_rsc[tid], 1714 &status->ptk.tkip.seq[tid]); 1715 iwl_mvm_le64_to_aes_seq(sc->ucast_rsc[tid], 1716 &status->ptk.aes.seq[tid]); 1717 } 1718 } 1719 1720 static void iwl_mvm_set_key_rx_seq_idx(struct ieee80211_key_conf *key, 1721 struct iwl_wowlan_status_data *status, 1722 int idx) 1723 { 1724 switch (key->cipher) { 1725 case WLAN_CIPHER_SUITE_CCMP: 1726 case WLAN_CIPHER_SUITE_GCMP: 1727 case WLAN_CIPHER_SUITE_GCMP_256: 1728 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].aes.seq); 1729 break; 1730 case WLAN_CIPHER_SUITE_TKIP: 1731 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].tkip.seq); 1732 break; 1733 default: 1734 WARN_ON(1); 1735 } 1736 } 1737 1738 static void iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf *key, 1739 struct iwl_wowlan_status_data *status, 1740 bool installed) 1741 { 1742 int i; 1743 1744 for (i = 0; i < ARRAY_SIZE(status->gtk_seq); i++) { 1745 if (!status->gtk_seq[i].valid) 1746 continue; 1747 1748 /* Handle the case where we know the key ID */ 1749 if (status->gtk_seq[i].key_id == key->keyidx) { 1750 s8 new_key_id = -1; 1751 1752 if (status->num_of_gtk_rekeys) 1753 new_key_id = status->gtk.flags & 1754 IWL_WOWLAN_GTK_IDX_MASK; 1755 1756 /* Don't install a new key's value to an old key */ 1757 if (new_key_id != key->keyidx) 1758 iwl_mvm_set_key_rx_seq_idx(key, status, i); 1759 continue; 1760 } 1761 1762 /* handle the case where we didn't, last key only */ 1763 if (status->gtk_seq[i].key_id == -1 && 1764 (!status->num_of_gtk_rekeys || installed)) 1765 iwl_mvm_set_key_rx_seq_idx(key, status, i); 1766 } 1767 } 1768 1769 struct iwl_mvm_d3_gtk_iter_data { 1770 struct iwl_mvm *mvm; 1771 struct iwl_wowlan_status_data *status; 1772 void *last_gtk; 1773 u32 cipher; 1774 bool find_phase, unhandled_cipher; 1775 int num_keys; 1776 }; 1777 1778 static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw, 1779 struct ieee80211_vif *vif, 1780 struct ieee80211_sta *sta, 1781 struct ieee80211_key_conf *key, 1782 void *_data) 1783 { 1784 struct iwl_mvm_d3_gtk_iter_data *data = _data; 1785 struct iwl_wowlan_status_data *status = data->status; 1786 1787 if (data->unhandled_cipher) 1788 return; 1789 1790 switch (key->cipher) { 1791 case WLAN_CIPHER_SUITE_WEP40: 1792 case WLAN_CIPHER_SUITE_WEP104: 1793 /* ignore WEP completely, nothing to do */ 1794 return; 1795 case WLAN_CIPHER_SUITE_CCMP: 1796 case WLAN_CIPHER_SUITE_GCMP: 1797 case WLAN_CIPHER_SUITE_GCMP_256: 1798 case WLAN_CIPHER_SUITE_TKIP: 1799 /* we support these */ 1800 break; 1801 default: 1802 /* everything else (even CMAC for MFP) - disconnect from AP */ 1803 data->unhandled_cipher = true; 1804 return; 1805 } 1806 1807 data->num_keys++; 1808 1809 /* 1810 * pairwise key - update sequence counters only; 1811 * note that this assumes no TDLS sessions are active 1812 */ 1813 if (sta) { 1814 if (data->find_phase) 1815 return; 1816 1817 switch (key->cipher) { 1818 case WLAN_CIPHER_SUITE_CCMP: 1819 case WLAN_CIPHER_SUITE_GCMP: 1820 case WLAN_CIPHER_SUITE_GCMP_256: 1821 atomic64_set(&key->tx_pn, status->ptk.aes.tx_pn); 1822 iwl_mvm_set_aes_ptk_rx_seq(data->mvm, status, sta, key); 1823 break; 1824 case WLAN_CIPHER_SUITE_TKIP: 1825 atomic64_set(&key->tx_pn, status->ptk.tkip.tx_pn); 1826 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.tkip.seq); 1827 break; 1828 } 1829 1830 /* that's it for this key */ 1831 return; 1832 } 1833 1834 if (data->find_phase) { 1835 data->last_gtk = key; 1836 data->cipher = key->cipher; 1837 return; 1838 } 1839 1840 if (data->status->num_of_gtk_rekeys) 1841 ieee80211_remove_key(key); 1842 1843 if (data->last_gtk == key) 1844 iwl_mvm_set_key_rx_seq(key, data->status, false); 1845 } 1846 1847 static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm, 1848 struct ieee80211_vif *vif, 1849 struct iwl_wowlan_status_data *status) 1850 { 1851 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1852 struct iwl_mvm_d3_gtk_iter_data gtkdata = { 1853 .mvm = mvm, 1854 .status = status, 1855 }; 1856 u32 disconnection_reasons = 1857 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 1858 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH; 1859 1860 if (!status || !vif->bss_conf.bssid) 1861 return false; 1862 1863 if (status->wakeup_reasons & disconnection_reasons) 1864 return false; 1865 1866 /* find last GTK that we used initially, if any */ 1867 gtkdata.find_phase = true; 1868 ieee80211_iter_keys(mvm->hw, vif, 1869 iwl_mvm_d3_update_keys, >kdata); 1870 /* not trying to keep connections with MFP/unhandled ciphers */ 1871 if (gtkdata.unhandled_cipher) 1872 return false; 1873 if (!gtkdata.num_keys) 1874 goto out; 1875 if (!gtkdata.last_gtk) 1876 return false; 1877 1878 /* 1879 * invalidate all other GTKs that might still exist and update 1880 * the one that we used 1881 */ 1882 gtkdata.find_phase = false; 1883 ieee80211_iter_keys(mvm->hw, vif, 1884 iwl_mvm_d3_update_keys, >kdata); 1885 1886 IWL_DEBUG_WOWLAN(mvm, "num of GTK rekeying %d\n", 1887 status->num_of_gtk_rekeys); 1888 if (status->num_of_gtk_rekeys) { 1889 struct ieee80211_key_conf *key; 1890 struct { 1891 struct ieee80211_key_conf conf; 1892 u8 key[32]; 1893 } conf = { 1894 .conf.cipher = gtkdata.cipher, 1895 .conf.keyidx = 1896 status->gtk.flags & IWL_WOWLAN_GTK_IDX_MASK, 1897 }; 1898 __be64 replay_ctr; 1899 1900 IWL_DEBUG_WOWLAN(mvm, 1901 "Received from FW GTK cipher %d, key index %d\n", 1902 conf.conf.cipher, conf.conf.keyidx); 1903 1904 BUILD_BUG_ON(WLAN_KEY_LEN_CCMP != WLAN_KEY_LEN_GCMP); 1905 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_CCMP); 1906 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_GCMP_256); 1907 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_TKIP); 1908 BUILD_BUG_ON(sizeof(conf.key) < sizeof(status->gtk.key)); 1909 1910 memcpy(conf.conf.key, status->gtk.key, sizeof(status->gtk.key)); 1911 1912 switch (gtkdata.cipher) { 1913 case WLAN_CIPHER_SUITE_CCMP: 1914 case WLAN_CIPHER_SUITE_GCMP: 1915 conf.conf.keylen = WLAN_KEY_LEN_CCMP; 1916 break; 1917 case WLAN_CIPHER_SUITE_GCMP_256: 1918 conf.conf.keylen = WLAN_KEY_LEN_GCMP_256; 1919 break; 1920 case WLAN_CIPHER_SUITE_TKIP: 1921 conf.conf.keylen = WLAN_KEY_LEN_TKIP; 1922 break; 1923 } 1924 1925 key = ieee80211_gtk_rekey_add(vif, &conf.conf); 1926 if (IS_ERR(key)) 1927 return false; 1928 iwl_mvm_set_key_rx_seq(key, status, true); 1929 1930 replay_ctr = cpu_to_be64(status->replay_ctr); 1931 1932 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid, 1933 (void *)&replay_ctr, GFP_KERNEL); 1934 } 1935 1936 out: 1937 if (iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP, 1938 WOWLAN_GET_STATUSES, 0) < 10) { 1939 mvmvif->seqno_valid = true; 1940 /* +0x10 because the set API expects next-to-use, not last-used */ 1941 mvmvif->seqno = status->non_qos_seq_ctr + 0x10; 1942 } 1943 1944 return true; 1945 } 1946 1947 static void iwl_mvm_convert_gtk_v2(struct iwl_wowlan_status_data *status, 1948 struct iwl_wowlan_gtk_status_v2 *data) 1949 { 1950 BUILD_BUG_ON(sizeof(status->gtk.key) < sizeof(data->key)); 1951 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY + 1952 sizeof(data->tkip_mic_key) > 1953 sizeof(status->gtk.key)); 1954 1955 status->gtk.len = data->key_len; 1956 status->gtk.flags = data->key_flags; 1957 1958 memcpy(status->gtk.key, data->key, sizeof(data->key)); 1959 1960 /* if it's as long as the TKIP encryption key, copy MIC key */ 1961 if (status->gtk.len == NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY) 1962 memcpy(status->gtk.key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 1963 data->tkip_mic_key, sizeof(data->tkip_mic_key)); 1964 } 1965 1966 static void iwl_mvm_convert_gtk_v3(struct iwl_wowlan_status_data *status, 1967 struct iwl_wowlan_gtk_status_v3 *data) 1968 { 1969 /* The parts we need are identical in v2 and v3 */ 1970 #define CHECK(_f) do { \ 1971 BUILD_BUG_ON(offsetof(struct iwl_wowlan_gtk_status_v2, _f) != \ 1972 offsetof(struct iwl_wowlan_gtk_status_v3, _f)); \ 1973 BUILD_BUG_ON(offsetofend(struct iwl_wowlan_gtk_status_v2, _f) !=\ 1974 offsetofend(struct iwl_wowlan_gtk_status_v3, _f)); \ 1975 } while (0) 1976 1977 CHECK(key); 1978 CHECK(key_len); 1979 CHECK(key_flags); 1980 CHECK(tkip_mic_key); 1981 #undef CHECK 1982 1983 iwl_mvm_convert_gtk_v2(status, (void *)data); 1984 } 1985 1986 static void iwl_mvm_convert_igtk(struct iwl_wowlan_status_data *status, 1987 struct iwl_wowlan_igtk_status *data) 1988 { 1989 const u8 *ipn = data->ipn; 1990 1991 BUILD_BUG_ON(sizeof(status->igtk.key) < sizeof(data->key)); 1992 1993 status->igtk.len = data->key_len; 1994 status->igtk.flags = data->key_flags; 1995 1996 memcpy(status->igtk.key, data->key, sizeof(data->key)); 1997 1998 status->igtk.ipn = ((u64)ipn[5] << 0) | 1999 ((u64)ipn[4] << 8) | 2000 ((u64)ipn[3] << 16) | 2001 ((u64)ipn[2] << 24) | 2002 ((u64)ipn[1] << 32) | 2003 ((u64)ipn[0] << 40); 2004 } 2005 2006 static void iwl_mvm_parse_wowlan_info_notif(struct iwl_mvm *mvm, 2007 struct iwl_wowlan_info_notif *data, 2008 struct iwl_wowlan_status_data *status, 2009 u32 len) 2010 { 2011 u32 i; 2012 2013 if (len < sizeof(*data)) { 2014 IWL_ERR(mvm, "Invalid WoWLAN info notification!\n"); 2015 status = NULL; 2016 return; 2017 } 2018 2019 iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc); 2020 iwl_mvm_convert_gtk_v3(status, &data->gtk[0]); 2021 iwl_mvm_convert_igtk(status, &data->igtk[0]); 2022 2023 status->replay_ctr = le64_to_cpu(data->replay_ctr); 2024 status->pattern_number = le16_to_cpu(data->pattern_number); 2025 for (i = 0; i < IWL_MAX_TID_COUNT; i++) 2026 status->qos_seq_ctr[i] = 2027 le16_to_cpu(data->qos_seq_ctr[i]); 2028 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); 2029 status->num_of_gtk_rekeys = 2030 le32_to_cpu(data->num_of_gtk_rekeys); 2031 status->received_beacons = le32_to_cpu(data->received_beacons); 2032 status->tid_tear_down = data->tid_tear_down; 2033 } 2034 2035 /* Occasionally, templates would be nice. This is one of those times ... */ 2036 #define iwl_mvm_parse_wowlan_status_common(_ver) \ 2037 static struct iwl_wowlan_status_data * \ 2038 iwl_mvm_parse_wowlan_status_common_ ## _ver(struct iwl_mvm *mvm, \ 2039 struct iwl_wowlan_status_ ##_ver *data,\ 2040 int len) \ 2041 { \ 2042 struct iwl_wowlan_status_data *status; \ 2043 int data_size, i; \ 2044 \ 2045 if (len < sizeof(*data)) { \ 2046 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \ 2047 return NULL; \ 2048 } \ 2049 \ 2050 data_size = ALIGN(le32_to_cpu(data->wake_packet_bufsize), 4); \ 2051 if (len != sizeof(*data) + data_size) { \ 2052 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \ 2053 return NULL; \ 2054 } \ 2055 \ 2056 status = kzalloc(sizeof(*status), GFP_KERNEL); \ 2057 if (!status) \ 2058 return NULL; \ 2059 \ 2060 /* copy all the common fields */ \ 2061 status->replay_ctr = le64_to_cpu(data->replay_ctr); \ 2062 status->pattern_number = le16_to_cpu(data->pattern_number); \ 2063 status->non_qos_seq_ctr = le16_to_cpu(data->non_qos_seq_ctr); \ 2064 for (i = 0; i < 8; i++) \ 2065 status->qos_seq_ctr[i] = \ 2066 le16_to_cpu(data->qos_seq_ctr[i]); \ 2067 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); \ 2068 status->num_of_gtk_rekeys = \ 2069 le32_to_cpu(data->num_of_gtk_rekeys); \ 2070 status->received_beacons = le32_to_cpu(data->received_beacons); \ 2071 status->wake_packet_length = \ 2072 le32_to_cpu(data->wake_packet_length); \ 2073 status->wake_packet_bufsize = \ 2074 le32_to_cpu(data->wake_packet_bufsize); \ 2075 if (status->wake_packet_bufsize) { \ 2076 status->wake_packet = \ 2077 kmemdup(data->wake_packet, \ 2078 status->wake_packet_bufsize, \ 2079 GFP_KERNEL); \ 2080 if (!status->wake_packet) { \ 2081 kfree(status); \ 2082 return NULL; \ 2083 } \ 2084 } else { \ 2085 status->wake_packet = NULL; \ 2086 } \ 2087 \ 2088 return status; \ 2089 } 2090 2091 iwl_mvm_parse_wowlan_status_common(v6) 2092 iwl_mvm_parse_wowlan_status_common(v7) 2093 iwl_mvm_parse_wowlan_status_common(v9) 2094 iwl_mvm_parse_wowlan_status_common(v12) 2095 2096 static struct iwl_wowlan_status_data * 2097 iwl_mvm_send_wowlan_get_status(struct iwl_mvm *mvm, u8 sta_id) 2098 { 2099 struct iwl_wowlan_status_data *status; 2100 struct iwl_wowlan_get_status_cmd get_status_cmd = { 2101 .sta_id = cpu_to_le32(sta_id), 2102 }; 2103 struct iwl_host_cmd cmd = { 2104 .id = WOWLAN_GET_STATUSES, 2105 .flags = CMD_WANT_SKB, 2106 .data = { &get_status_cmd, }, 2107 .len = { sizeof(get_status_cmd), }, 2108 }; 2109 int ret, len; 2110 u8 notif_ver; 2111 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id, 2112 IWL_FW_CMD_VER_UNKNOWN); 2113 2114 if (cmd_ver == IWL_FW_CMD_VER_UNKNOWN) 2115 cmd.len[0] = 0; 2116 2117 lockdep_assert_held(&mvm->mutex); 2118 2119 ret = iwl_mvm_send_cmd(mvm, &cmd); 2120 if (ret) { 2121 IWL_ERR(mvm, "failed to query wakeup status (%d)\n", ret); 2122 return ERR_PTR(ret); 2123 } 2124 2125 len = iwl_rx_packet_payload_len(cmd.resp_pkt); 2126 2127 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */ 2128 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP, 2129 WOWLAN_GET_STATUSES, 0); 2130 if (!notif_ver) 2131 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, 2132 WOWLAN_GET_STATUSES, 7); 2133 2134 if (!fw_has_api(&mvm->fw->ucode_capa, 2135 IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL)) { 2136 struct iwl_wowlan_status_v6 *v6 = (void *)cmd.resp_pkt->data; 2137 2138 status = iwl_mvm_parse_wowlan_status_common_v6(mvm, v6, len); 2139 if (!status) 2140 goto out_free_resp; 2141 2142 BUILD_BUG_ON(sizeof(v6->gtk.decrypt_key) > 2143 sizeof(status->gtk.key)); 2144 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY + 2145 sizeof(v6->gtk.tkip_mic_key) > 2146 sizeof(status->gtk.key)); 2147 2148 /* copy GTK info to the right place */ 2149 memcpy(status->gtk.key, v6->gtk.decrypt_key, 2150 sizeof(v6->gtk.decrypt_key)); 2151 memcpy(status->gtk.key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 2152 v6->gtk.tkip_mic_key, 2153 sizeof(v6->gtk.tkip_mic_key)); 2154 2155 iwl_mvm_convert_key_counters(status, &v6->gtk.rsc.all_tsc_rsc); 2156 2157 /* hardcode the key length to 16 since v6 only supports 16 */ 2158 status->gtk.len = 16; 2159 2160 /* 2161 * The key index only uses 2 bits (values 0 to 3) and 2162 * we always set bit 7 which means this is the 2163 * currently used key. 2164 */ 2165 status->gtk.flags = v6->gtk.key_index | BIT(7); 2166 } else if (notif_ver == 7) { 2167 struct iwl_wowlan_status_v7 *v7 = (void *)cmd.resp_pkt->data; 2168 2169 status = iwl_mvm_parse_wowlan_status_common_v7(mvm, v7, len); 2170 if (!status) 2171 goto out_free_resp; 2172 2173 iwl_mvm_convert_key_counters(status, &v7->gtk[0].rsc.all_tsc_rsc); 2174 iwl_mvm_convert_gtk_v2(status, &v7->gtk[0]); 2175 iwl_mvm_convert_igtk(status, &v7->igtk[0]); 2176 } else if (notif_ver == 9 || notif_ver == 10 || notif_ver == 11) { 2177 struct iwl_wowlan_status_v9 *v9 = (void *)cmd.resp_pkt->data; 2178 2179 /* these three command versions have same layout and size, the 2180 * difference is only in a few not used (reserved) fields. 2181 */ 2182 status = iwl_mvm_parse_wowlan_status_common_v9(mvm, v9, len); 2183 if (!status) 2184 goto out_free_resp; 2185 2186 iwl_mvm_convert_key_counters(status, &v9->gtk[0].rsc.all_tsc_rsc); 2187 iwl_mvm_convert_gtk_v2(status, &v9->gtk[0]); 2188 iwl_mvm_convert_igtk(status, &v9->igtk[0]); 2189 2190 status->tid_tear_down = v9->tid_tear_down; 2191 } else if (notif_ver == 12) { 2192 struct iwl_wowlan_status_v12 *v12 = (void *)cmd.resp_pkt->data; 2193 2194 status = iwl_mvm_parse_wowlan_status_common_v12(mvm, v12, len); 2195 if (!status) 2196 goto out_free_resp; 2197 2198 iwl_mvm_convert_key_counters_v5(status, &v12->gtk[0].sc); 2199 iwl_mvm_convert_gtk_v3(status, &v12->gtk[0]); 2200 iwl_mvm_convert_igtk(status, &v12->igtk[0]); 2201 2202 status->tid_tear_down = v12->tid_tear_down; 2203 } else { 2204 IWL_ERR(mvm, 2205 "Firmware advertises unknown WoWLAN status response %d!\n", 2206 notif_ver); 2207 status = NULL; 2208 } 2209 2210 out_free_resp: 2211 iwl_free_resp(&cmd); 2212 return status; 2213 } 2214 2215 /* releases the MVM mutex */ 2216 static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm, 2217 struct ieee80211_vif *vif, 2218 struct iwl_wowlan_status_data *status) 2219 { 2220 int i; 2221 bool keep; 2222 struct iwl_mvm_sta *mvm_ap_sta; 2223 2224 if (!status) 2225 goto out_unlock; 2226 2227 IWL_DEBUG_WOWLAN(mvm, "wakeup reason 0x%x\n", 2228 status->wakeup_reasons); 2229 2230 /* still at hard-coded place 0 for D3 image */ 2231 mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, 0); 2232 if (!mvm_ap_sta) 2233 goto out_unlock; 2234 2235 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 2236 u16 seq = status->qos_seq_ctr[i]; 2237 /* firmware stores last-used value, we store next value */ 2238 seq += 0x10; 2239 mvm_ap_sta->tid_data[i].seq_number = seq; 2240 } 2241 2242 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000) { 2243 i = mvm->offload_tid; 2244 iwl_trans_set_q_ptrs(mvm->trans, 2245 mvm_ap_sta->tid_data[i].txq_id, 2246 mvm_ap_sta->tid_data[i].seq_number >> 4); 2247 } 2248 2249 /* now we have all the data we need, unlock to avoid mac80211 issues */ 2250 mutex_unlock(&mvm->mutex); 2251 2252 iwl_mvm_report_wakeup_reasons(mvm, vif, status); 2253 2254 keep = iwl_mvm_setup_connection_keep(mvm, vif, status); 2255 2256 return keep; 2257 2258 out_unlock: 2259 mutex_unlock(&mvm->mutex); 2260 return false; 2261 } 2262 2263 #define ND_QUERY_BUF_LEN (sizeof(struct iwl_scan_offload_profile_match) * \ 2264 IWL_SCAN_MAX_PROFILES) 2265 2266 struct iwl_mvm_nd_results { 2267 u32 matched_profiles; 2268 u8 matches[ND_QUERY_BUF_LEN]; 2269 }; 2270 2271 static int 2272 iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm, 2273 struct iwl_mvm_nd_results *results) 2274 { 2275 struct iwl_scan_offload_match_info *query; 2276 struct iwl_host_cmd cmd = { 2277 .id = SCAN_OFFLOAD_PROFILES_QUERY_CMD, 2278 .flags = CMD_WANT_SKB, 2279 }; 2280 int ret, len; 2281 size_t query_len, matches_len; 2282 int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw); 2283 2284 ret = iwl_mvm_send_cmd(mvm, &cmd); 2285 if (ret) { 2286 IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret); 2287 return ret; 2288 } 2289 2290 if (fw_has_api(&mvm->fw->ucode_capa, 2291 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2292 query_len = sizeof(struct iwl_scan_offload_match_info); 2293 matches_len = sizeof(struct iwl_scan_offload_profile_match) * 2294 max_profiles; 2295 } else { 2296 query_len = sizeof(struct iwl_scan_offload_profiles_query_v1); 2297 matches_len = sizeof(struct iwl_scan_offload_profile_match_v1) * 2298 max_profiles; 2299 } 2300 2301 len = iwl_rx_packet_payload_len(cmd.resp_pkt); 2302 if (len < query_len) { 2303 IWL_ERR(mvm, "Invalid scan offload profiles query response!\n"); 2304 ret = -EIO; 2305 goto out_free_resp; 2306 } 2307 2308 query = (void *)cmd.resp_pkt->data; 2309 2310 results->matched_profiles = le32_to_cpu(query->matched_profiles); 2311 memcpy(results->matches, query->matches, matches_len); 2312 2313 #ifdef CONFIG_IWLWIFI_DEBUGFS 2314 mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done); 2315 #endif 2316 2317 out_free_resp: 2318 iwl_free_resp(&cmd); 2319 return ret; 2320 } 2321 2322 static int iwl_mvm_query_num_match_chans(struct iwl_mvm *mvm, 2323 struct iwl_mvm_nd_results *results, 2324 int idx) 2325 { 2326 int n_chans = 0, i; 2327 2328 if (fw_has_api(&mvm->fw->ucode_capa, 2329 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2330 struct iwl_scan_offload_profile_match *matches = 2331 (void *)results->matches; 2332 2333 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; i++) 2334 n_chans += hweight8(matches[idx].matching_channels[i]); 2335 } else { 2336 struct iwl_scan_offload_profile_match_v1 *matches = 2337 (void *)results->matches; 2338 2339 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1; i++) 2340 n_chans += hweight8(matches[idx].matching_channels[i]); 2341 } 2342 2343 return n_chans; 2344 } 2345 2346 static void iwl_mvm_query_set_freqs(struct iwl_mvm *mvm, 2347 struct iwl_mvm_nd_results *results, 2348 struct cfg80211_wowlan_nd_match *match, 2349 int idx) 2350 { 2351 int i; 2352 2353 if (fw_has_api(&mvm->fw->ucode_capa, 2354 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2355 struct iwl_scan_offload_profile_match *matches = 2356 (void *)results->matches; 2357 2358 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; i++) 2359 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8))) 2360 match->channels[match->n_channels++] = 2361 mvm->nd_channels[i]->center_freq; 2362 } else { 2363 struct iwl_scan_offload_profile_match_v1 *matches = 2364 (void *)results->matches; 2365 2366 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1 * 8; i++) 2367 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8))) 2368 match->channels[match->n_channels++] = 2369 mvm->nd_channels[i]->center_freq; 2370 } 2371 } 2372 2373 /** 2374 * enum iwl_d3_notif - d3 notifications 2375 * @IWL_D3_NOTIF_WOWLAN_INFO: WOWLAN_INFO_NOTIF was received 2376 * @IWL_D3_NOTIF_WOWLAN_WAKE_PKT: WOWLAN_WAKE_PKT_NOTIF was received 2377 * @IWL_D3_NOTIF_PROT_OFFLOAD: PROT_OFFLOAD_NOTIF was received 2378 * @IWL_D3_ND_MATCH_INFO: OFFLOAD_MATCH_INFO_NOTIF was received 2379 * @IWL_D3_NOTIF_D3_END_NOTIF: D3_END_NOTIF was received 2380 */ 2381 enum iwl_d3_notif { 2382 IWL_D3_NOTIF_WOWLAN_INFO = BIT(0), 2383 IWL_D3_NOTIF_WOWLAN_WAKE_PKT = BIT(1), 2384 IWL_D3_NOTIF_PROT_OFFLOAD = BIT(2), 2385 IWL_D3_ND_MATCH_INFO = BIT(3), 2386 IWL_D3_NOTIF_D3_END_NOTIF = BIT(4) 2387 }; 2388 2389 /* manage d3 resume data */ 2390 struct iwl_d3_data { 2391 struct iwl_wowlan_status_data *status; 2392 bool test; 2393 u32 d3_end_flags; 2394 u32 notif_expected; /* bitmap - see &enum iwl_d3_notif */ 2395 u32 notif_received; /* bitmap - see &enum iwl_d3_notif */ 2396 struct iwl_mvm_nd_results *nd_results; 2397 bool nd_results_valid; 2398 }; 2399 2400 static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm, 2401 struct ieee80211_vif *vif, 2402 struct iwl_d3_data *d3_data) 2403 { 2404 struct cfg80211_wowlan_nd_info *net_detect = NULL; 2405 struct cfg80211_wowlan_wakeup wakeup = { 2406 .pattern_idx = -1, 2407 }; 2408 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; 2409 unsigned long matched_profiles; 2410 u32 reasons = 0; 2411 int i, n_matches, ret; 2412 2413 if (WARN_ON(!d3_data || !d3_data->status)) 2414 goto out; 2415 2416 reasons = d3_data->status->wakeup_reasons; 2417 2418 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 2419 wakeup.rfkill_release = true; 2420 2421 if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) 2422 goto out; 2423 2424 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2425 WOWLAN_INFO_NOTIFICATION, 0)) { 2426 IWL_INFO(mvm, "Query FW for ND results\n"); 2427 ret = iwl_mvm_netdetect_query_results(mvm, d3_data->nd_results); 2428 2429 } else { 2430 IWL_INFO(mvm, "Notification based ND results\n"); 2431 ret = d3_data->nd_results_valid ? 0 : -1; 2432 } 2433 2434 if (ret || !d3_data->nd_results->matched_profiles) { 2435 wakeup_report = NULL; 2436 goto out; 2437 } 2438 2439 matched_profiles = d3_data->nd_results->matched_profiles; 2440 if (mvm->n_nd_match_sets) { 2441 n_matches = hweight_long(matched_profiles); 2442 } else { 2443 IWL_ERR(mvm, "no net detect match information available\n"); 2444 n_matches = 0; 2445 } 2446 2447 net_detect = kzalloc(struct_size(net_detect, matches, n_matches), 2448 GFP_KERNEL); 2449 if (!net_detect || !n_matches) 2450 goto out_report_nd; 2451 2452 for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) { 2453 struct cfg80211_wowlan_nd_match *match; 2454 int idx, n_channels = 0; 2455 2456 n_channels = iwl_mvm_query_num_match_chans(mvm, 2457 d3_data->nd_results, 2458 i); 2459 2460 match = kzalloc(struct_size(match, channels, n_channels), 2461 GFP_KERNEL); 2462 if (!match) 2463 goto out_report_nd; 2464 2465 net_detect->matches[net_detect->n_matches++] = match; 2466 2467 /* We inverted the order of the SSIDs in the scan 2468 * request, so invert the index here. 2469 */ 2470 idx = mvm->n_nd_match_sets - i - 1; 2471 match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len; 2472 memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid, 2473 match->ssid.ssid_len); 2474 2475 if (mvm->n_nd_channels < n_channels) 2476 continue; 2477 2478 iwl_mvm_query_set_freqs(mvm, d3_data->nd_results, match, i); 2479 } 2480 2481 out_report_nd: 2482 wakeup.net_detect = net_detect; 2483 out: 2484 iwl_mvm_free_nd(mvm); 2485 2486 mutex_unlock(&mvm->mutex); 2487 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); 2488 2489 if (net_detect) { 2490 for (i = 0; i < net_detect->n_matches; i++) 2491 kfree(net_detect->matches[i]); 2492 kfree(net_detect); 2493 } 2494 } 2495 2496 static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac, 2497 struct ieee80211_vif *vif) 2498 { 2499 /* skip the one we keep connection on */ 2500 if (data == vif) 2501 return; 2502 2503 if (vif->type == NL80211_IFTYPE_STATION) 2504 ieee80211_resume_disconnect(vif); 2505 } 2506 2507 static bool iwl_mvm_rt_status(struct iwl_trans *trans, u32 base, u32 *err_id) 2508 { 2509 struct error_table_start { 2510 /* cf. struct iwl_error_event_table */ 2511 u32 valid; 2512 __le32 err_id; 2513 } err_info; 2514 2515 if (!base) 2516 return false; 2517 2518 iwl_trans_read_mem_bytes(trans, base, 2519 &err_info, sizeof(err_info)); 2520 if (err_info.valid && err_id) 2521 *err_id = le32_to_cpu(err_info.err_id); 2522 2523 return !!err_info.valid; 2524 } 2525 2526 static bool iwl_mvm_check_rt_status(struct iwl_mvm *mvm, 2527 struct ieee80211_vif *vif) 2528 { 2529 u32 err_id; 2530 2531 /* check for lmac1 error */ 2532 if (iwl_mvm_rt_status(mvm->trans, 2533 mvm->trans->dbg.lmac_error_event_table[0], 2534 &err_id)) { 2535 if (err_id == RF_KILL_INDICATOR_FOR_WOWLAN) { 2536 struct cfg80211_wowlan_wakeup wakeup = { 2537 .rfkill_release = true, 2538 }; 2539 ieee80211_report_wowlan_wakeup(vif, &wakeup, 2540 GFP_KERNEL); 2541 } 2542 return true; 2543 } 2544 2545 /* check if we have lmac2 set and check for error */ 2546 if (iwl_mvm_rt_status(mvm->trans, 2547 mvm->trans->dbg.lmac_error_event_table[1], NULL)) 2548 return true; 2549 2550 /* check for umac error */ 2551 if (iwl_mvm_rt_status(mvm->trans, 2552 mvm->trans->dbg.umac_error_event_table, NULL)) 2553 return true; 2554 2555 return false; 2556 } 2557 2558 /* 2559 * This function assumes: 2560 * 1. The mutex is already held. 2561 * 2. The callee functions unlock the mutex. 2562 */ 2563 static bool 2564 iwl_mvm_choose_query_wakeup_reasons(struct iwl_mvm *mvm, 2565 struct ieee80211_vif *vif, 2566 struct iwl_d3_data *d3_data) 2567 { 2568 lockdep_assert_held(&mvm->mutex); 2569 2570 /* if FW uses status notification, status shouldn't be NULL here */ 2571 if (!d3_data->status) { 2572 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2573 u8 sta_id = mvm->net_detect ? IWL_MVM_INVALID_STA : mvmvif->ap_sta_id; 2574 2575 d3_data->status = iwl_mvm_send_wowlan_get_status(mvm, sta_id); 2576 } 2577 2578 if (mvm->net_detect) { 2579 iwl_mvm_query_netdetect_reasons(mvm, vif, d3_data); 2580 } else { 2581 bool keep = iwl_mvm_query_wakeup_reasons(mvm, vif, 2582 d3_data->status); 2583 2584 #ifdef CONFIG_IWLWIFI_DEBUGFS 2585 if (keep) 2586 mvm->keep_vif = vif; 2587 #endif 2588 2589 return keep; 2590 } 2591 return false; 2592 } 2593 2594 #define IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT (IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET | \ 2595 IWL_WOWLAN_WAKEUP_BY_PATTERN | \ 2596 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN |\ 2597 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN_WILDCARD |\ 2598 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN |\ 2599 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN_WILDCARD) 2600 2601 static int iwl_mvm_wowlan_store_wake_pkt(struct iwl_mvm *mvm, 2602 struct iwl_wowlan_wake_pkt_notif *notif, 2603 struct iwl_wowlan_status_data *status, 2604 u32 len) 2605 { 2606 u32 data_size, packet_len = le32_to_cpu(notif->wake_packet_length); 2607 2608 if (len < sizeof(*notif)) { 2609 IWL_ERR(mvm, "Invalid WoWLAN wake packet notification!\n"); 2610 return -EIO; 2611 } 2612 2613 if (WARN_ON(!status)) { 2614 IWL_ERR(mvm, "Got wake packet notification but wowlan status data is NULL\n"); 2615 return -EIO; 2616 } 2617 2618 if (WARN_ON(!(status->wakeup_reasons & 2619 IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT))) { 2620 IWL_ERR(mvm, "Got wakeup packet but wakeup reason is %x\n", 2621 status->wakeup_reasons); 2622 return -EIO; 2623 } 2624 2625 data_size = len - offsetof(struct iwl_wowlan_wake_pkt_notif, wake_packet); 2626 2627 /* data_size got the padding from the notification, remove it. */ 2628 if (packet_len < data_size) 2629 data_size = packet_len; 2630 2631 status->wake_packet = kmemdup(notif->wake_packet, data_size, 2632 GFP_ATOMIC); 2633 2634 if (!status->wake_packet) 2635 return -ENOMEM; 2636 2637 status->wake_packet_length = packet_len; 2638 status->wake_packet_bufsize = data_size; 2639 2640 return 0; 2641 } 2642 2643 static void iwl_mvm_nd_match_info_handler(struct iwl_mvm *mvm, 2644 struct iwl_d3_data *d3_data, 2645 struct iwl_scan_offload_match_info *notif, 2646 u32 len) 2647 { 2648 struct iwl_wowlan_status_data *status = d3_data->status; 2649 struct ieee80211_vif *vif = iwl_mvm_get_bss_vif(mvm); 2650 struct iwl_mvm_nd_results *results = d3_data->nd_results; 2651 size_t i, matches_len = sizeof(struct iwl_scan_offload_profile_match) * 2652 iwl_umac_scan_get_max_profiles(mvm->fw); 2653 2654 if (IS_ERR_OR_NULL(vif)) 2655 return; 2656 2657 if (len < sizeof(struct iwl_scan_offload_match_info)) { 2658 IWL_ERR(mvm, "Invalid scan match info notification\n"); 2659 return; 2660 } 2661 2662 if (!mvm->net_detect) { 2663 IWL_ERR(mvm, "Unexpected scan match info notification\n"); 2664 return; 2665 } 2666 2667 if (!status || status->wakeup_reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) { 2668 IWL_ERR(mvm, 2669 "Ignore scan match info notification: no reason\n"); 2670 return; 2671 } 2672 2673 #ifdef CONFIG_IWLWIFI_DEBUGFS 2674 mvm->last_netdetect_scans = le32_to_cpu(notif->n_scans_done); 2675 #endif 2676 2677 results->matched_profiles = le32_to_cpu(notif->matched_profiles); 2678 IWL_INFO(mvm, "number of matched profiles=%u\n", 2679 results->matched_profiles); 2680 2681 if (results->matched_profiles) { 2682 memcpy(results->matches, notif->matches, matches_len); 2683 d3_data->nd_results_valid = TRUE; 2684 } 2685 2686 /* no scan should be active at this point */ 2687 mvm->scan_status = 0; 2688 for (i = 0; i < mvm->max_scans; i++) 2689 mvm->scan_uid_status[i] = 0; 2690 } 2691 2692 static bool iwl_mvm_wait_d3_notif(struct iwl_notif_wait_data *notif_wait, 2693 struct iwl_rx_packet *pkt, void *data) 2694 { 2695 struct iwl_mvm *mvm = 2696 container_of(notif_wait, struct iwl_mvm, notif_wait); 2697 struct iwl_d3_data *d3_data = data; 2698 u32 len; 2699 int ret; 2700 2701 switch (WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) { 2702 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION): { 2703 struct iwl_wowlan_info_notif *notif = (void *)pkt->data; 2704 2705 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_INFO) { 2706 /* We might get two notifications due to dual bss */ 2707 IWL_DEBUG_WOWLAN(mvm, 2708 "Got additional wowlan info notification\n"); 2709 break; 2710 } 2711 2712 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_INFO; 2713 len = iwl_rx_packet_payload_len(pkt); 2714 iwl_mvm_parse_wowlan_info_notif(mvm, notif, d3_data->status, 2715 len); 2716 if (d3_data->status && 2717 d3_data->status->wakeup_reasons & IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT) 2718 /* We are supposed to get also wake packet notif */ 2719 d3_data->notif_expected |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT; 2720 2721 break; 2722 } 2723 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION): { 2724 struct iwl_wowlan_wake_pkt_notif *notif = (void *)pkt->data; 2725 2726 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_WAKE_PKT) { 2727 /* We shouldn't get two wake packet notifications */ 2728 IWL_ERR(mvm, 2729 "Got additional wowlan wake packet notification\n"); 2730 } else { 2731 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT; 2732 len = iwl_rx_packet_payload_len(pkt); 2733 ret = iwl_mvm_wowlan_store_wake_pkt(mvm, notif, 2734 d3_data->status, 2735 len); 2736 if (ret) 2737 IWL_ERR(mvm, 2738 "Can't parse WOWLAN_WAKE_PKT_NOTIFICATION\n"); 2739 } 2740 2741 break; 2742 } 2743 case WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF): { 2744 struct iwl_scan_offload_match_info *notif = (void *)pkt->data; 2745 2746 if (d3_data->notif_received & IWL_D3_ND_MATCH_INFO) { 2747 IWL_ERR(mvm, 2748 "Got additional netdetect match info\n"); 2749 break; 2750 } 2751 2752 d3_data->notif_received |= IWL_D3_ND_MATCH_INFO; 2753 2754 /* explicitly set this in the 'expected' as well */ 2755 d3_data->notif_expected |= IWL_D3_ND_MATCH_INFO; 2756 2757 len = iwl_rx_packet_payload_len(pkt); 2758 iwl_mvm_nd_match_info_handler(mvm, d3_data, notif, len); 2759 break; 2760 } 2761 case WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION): { 2762 struct iwl_mvm_d3_end_notif *notif = (void *)pkt->data; 2763 2764 d3_data->d3_end_flags = __le32_to_cpu(notif->flags); 2765 d3_data->notif_received |= IWL_D3_NOTIF_D3_END_NOTIF; 2766 2767 break; 2768 } 2769 default: 2770 WARN_ON(1); 2771 } 2772 2773 return d3_data->notif_received == d3_data->notif_expected; 2774 } 2775 2776 static int iwl_mvm_resume_firmware(struct iwl_mvm *mvm, bool test) 2777 { 2778 int ret; 2779 enum iwl_d3_status d3_status; 2780 struct iwl_host_cmd cmd = { 2781 .id = D0I3_END_CMD, 2782 .flags = CMD_WANT_SKB | CMD_SEND_IN_D3, 2783 }; 2784 bool reset = fw_has_capa(&mvm->fw->ucode_capa, 2785 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 2786 2787 ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, !reset); 2788 if (ret) 2789 return ret; 2790 2791 if (d3_status != IWL_D3_STATUS_ALIVE) { 2792 IWL_INFO(mvm, "Device was reset during suspend\n"); 2793 return -ENOENT; 2794 } 2795 2796 /* 2797 * We should trigger resume flow using command only for 22000 family 2798 * AX210 and above don't need the command since they have 2799 * the doorbell interrupt. 2800 */ 2801 if (mvm->trans->trans_cfg->device_family <= IWL_DEVICE_FAMILY_22000 && 2802 fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_D0I3_END_FIRST)) { 2803 ret = iwl_mvm_send_cmd(mvm, &cmd); 2804 if (ret < 0) 2805 IWL_ERR(mvm, "Failed to send D0I3_END_CMD first (%d)\n", 2806 ret); 2807 } 2808 2809 return ret; 2810 } 2811 2812 #define IWL_MVM_D3_NOTIF_TIMEOUT (HZ / 5) 2813 2814 static int iwl_mvm_d3_notif_wait(struct iwl_mvm *mvm, 2815 struct iwl_d3_data *d3_data) 2816 { 2817 static const u16 d3_resume_notif[] = { 2818 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION), 2819 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION), 2820 WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF), 2821 WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION) 2822 }; 2823 struct iwl_notification_wait wait_d3_notif; 2824 int ret; 2825 2826 iwl_init_notification_wait(&mvm->notif_wait, &wait_d3_notif, 2827 d3_resume_notif, ARRAY_SIZE(d3_resume_notif), 2828 iwl_mvm_wait_d3_notif, d3_data); 2829 2830 ret = iwl_mvm_resume_firmware(mvm, d3_data->test); 2831 if (ret) { 2832 iwl_remove_notification(&mvm->notif_wait, &wait_d3_notif); 2833 return ret; 2834 } 2835 2836 return iwl_wait_notification(&mvm->notif_wait, &wait_d3_notif, 2837 IWL_MVM_D3_NOTIF_TIMEOUT); 2838 } 2839 2840 static inline bool iwl_mvm_d3_resume_notif_based(struct iwl_mvm *mvm) 2841 { 2842 return iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2843 WOWLAN_INFO_NOTIFICATION, 0) && 2844 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2845 WOWLAN_WAKE_PKT_NOTIFICATION, 0) && 2846 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2847 D3_END_NOTIFICATION, 0); 2848 } 2849 2850 static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test) 2851 { 2852 struct ieee80211_vif *vif = NULL; 2853 int ret = 1; 2854 struct iwl_mvm_nd_results results = {}; 2855 struct iwl_d3_data d3_data = { 2856 .test = test, 2857 .notif_expected = 2858 IWL_D3_NOTIF_WOWLAN_INFO | 2859 IWL_D3_NOTIF_D3_END_NOTIF, 2860 .nd_results_valid = false, 2861 .nd_results = &results, 2862 }; 2863 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 2864 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 2865 bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa, 2866 IWL_UCODE_TLV_CAPA_D0I3_END_FIRST); 2867 bool resume_notif_based = iwl_mvm_d3_resume_notif_based(mvm); 2868 bool keep = false; 2869 2870 mutex_lock(&mvm->mutex); 2871 2872 mvm->last_reset_or_resume_time_jiffies = jiffies; 2873 2874 /* get the BSS vif pointer again */ 2875 vif = iwl_mvm_get_bss_vif(mvm); 2876 if (IS_ERR_OR_NULL(vif)) 2877 goto err; 2878 2879 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt); 2880 2881 if (iwl_mvm_check_rt_status(mvm, vif)) { 2882 set_bit(STATUS_FW_ERROR, &mvm->trans->status); 2883 iwl_mvm_dump_nic_error_log(mvm); 2884 iwl_dbg_tlv_time_point(&mvm->fwrt, 2885 IWL_FW_INI_TIME_POINT_FW_ASSERT, NULL); 2886 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert, 2887 false, 0); 2888 ret = 1; 2889 goto err; 2890 } 2891 2892 if (resume_notif_based) { 2893 d3_data.status = kzalloc(sizeof(*d3_data.status), GFP_KERNEL); 2894 if (!d3_data.status) { 2895 IWL_ERR(mvm, "Failed to allocate wowlan status\n"); 2896 ret = -ENOMEM; 2897 goto err; 2898 } 2899 2900 ret = iwl_mvm_d3_notif_wait(mvm, &d3_data); 2901 if (ret) 2902 goto err; 2903 } else { 2904 ret = iwl_mvm_resume_firmware(mvm, test); 2905 if (ret < 0) 2906 goto err; 2907 } 2908 2909 /* after the successful handshake, we're out of D3 */ 2910 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED; 2911 2912 /* when reset is required we can't send these following commands */ 2913 if (d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE) 2914 goto query_wakeup_reasons; 2915 2916 /* 2917 * Query the current location and source from the D3 firmware so we 2918 * can play it back when we re-intiailize the D0 firmware 2919 */ 2920 iwl_mvm_update_changed_regdom(mvm); 2921 2922 /* Re-configure PPAG settings */ 2923 iwl_mvm_ppag_send_cmd(mvm); 2924 2925 if (!unified_image) 2926 /* Re-configure default SAR profile */ 2927 iwl_mvm_sar_select_profile(mvm, 1, 1); 2928 2929 if (mvm->net_detect && unified_image) { 2930 /* If this is a non-unified image, we restart the FW, 2931 * so no need to stop the netdetect scan. If that 2932 * fails, continue and try to get the wake-up reasons, 2933 * but trigger a HW restart by keeping a failure code 2934 * in ret. 2935 */ 2936 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT, 2937 false); 2938 } 2939 2940 query_wakeup_reasons: 2941 keep = iwl_mvm_choose_query_wakeup_reasons(mvm, vif, &d3_data); 2942 /* has unlocked the mutex, so skip that */ 2943 goto out; 2944 2945 err: 2946 mutex_unlock(&mvm->mutex); 2947 out: 2948 if (d3_data.status) 2949 kfree(d3_data.status->wake_packet); 2950 kfree(d3_data.status); 2951 iwl_mvm_free_nd(mvm); 2952 2953 if (!d3_data.test && !mvm->net_detect) 2954 ieee80211_iterate_active_interfaces_mtx(mvm->hw, 2955 IEEE80211_IFACE_ITER_NORMAL, 2956 iwl_mvm_d3_disconnect_iter, 2957 keep ? vif : NULL); 2958 2959 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 2960 2961 /* no need to reset the device in unified images, if successful */ 2962 if (unified_image && !ret) { 2963 /* nothing else to do if we already sent D0I3_END_CMD */ 2964 if (d0i3_first) 2965 return 0; 2966 2967 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2968 D3_END_NOTIFICATION, 0)) { 2969 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL); 2970 if (!ret) 2971 return 0; 2972 } else if (!(d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)) { 2973 return 0; 2974 } 2975 } 2976 2977 /* 2978 * Reconfigure the device in one of the following cases: 2979 * 1. We are not using a unified image 2980 * 2. We are using a unified image but had an error while exiting D3 2981 */ 2982 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); 2983 2984 /* regardless of what happened, we're now out of D3 */ 2985 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED; 2986 2987 return 1; 2988 } 2989 2990 int iwl_mvm_resume(struct ieee80211_hw *hw) 2991 { 2992 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2993 int ret; 2994 2995 ret = __iwl_mvm_resume(mvm, false); 2996 2997 iwl_mvm_resume_tcm(mvm); 2998 2999 iwl_fw_runtime_resume(&mvm->fwrt); 3000 3001 return ret; 3002 } 3003 3004 void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled) 3005 { 3006 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3007 3008 device_set_wakeup_enable(mvm->trans->dev, enabled); 3009 } 3010 3011 #ifdef CONFIG_IWLWIFI_DEBUGFS 3012 static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file) 3013 { 3014 struct iwl_mvm *mvm = inode->i_private; 3015 int err; 3016 3017 if (mvm->d3_test_active) 3018 return -EBUSY; 3019 3020 file->private_data = inode->i_private; 3021 3022 iwl_mvm_pause_tcm(mvm, true); 3023 3024 iwl_fw_runtime_suspend(&mvm->fwrt); 3025 3026 /* start pseudo D3 */ 3027 rtnl_lock(); 3028 wiphy_lock(mvm->hw->wiphy); 3029 err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true); 3030 wiphy_unlock(mvm->hw->wiphy); 3031 rtnl_unlock(); 3032 if (err > 0) 3033 err = -EINVAL; 3034 if (err) 3035 return err; 3036 3037 mvm->d3_test_active = true; 3038 mvm->keep_vif = NULL; 3039 return 0; 3040 } 3041 3042 static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf, 3043 size_t count, loff_t *ppos) 3044 { 3045 struct iwl_mvm *mvm = file->private_data; 3046 u32 pme_asserted; 3047 3048 while (true) { 3049 /* read pme_ptr if available */ 3050 if (mvm->d3_test_pme_ptr) { 3051 pme_asserted = iwl_trans_read_mem32(mvm->trans, 3052 mvm->d3_test_pme_ptr); 3053 if (pme_asserted) 3054 break; 3055 } 3056 3057 if (msleep_interruptible(100)) 3058 break; 3059 } 3060 3061 return 0; 3062 } 3063 3064 static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac, 3065 struct ieee80211_vif *vif) 3066 { 3067 /* skip the one we keep connection on */ 3068 if (_data == vif) 3069 return; 3070 3071 if (vif->type == NL80211_IFTYPE_STATION) 3072 ieee80211_connection_loss(vif); 3073 } 3074 3075 static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file) 3076 { 3077 struct iwl_mvm *mvm = inode->i_private; 3078 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 3079 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 3080 3081 mvm->d3_test_active = false; 3082 3083 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt); 3084 3085 rtnl_lock(); 3086 wiphy_lock(mvm->hw->wiphy); 3087 __iwl_mvm_resume(mvm, true); 3088 wiphy_unlock(mvm->hw->wiphy); 3089 rtnl_unlock(); 3090 3091 iwl_mvm_resume_tcm(mvm); 3092 3093 iwl_fw_runtime_resume(&mvm->fwrt); 3094 3095 iwl_abort_notification_waits(&mvm->notif_wait); 3096 if (!unified_image) { 3097 int remaining_time = 10; 3098 3099 ieee80211_restart_hw(mvm->hw); 3100 3101 /* wait for restart and disconnect all interfaces */ 3102 while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 3103 remaining_time > 0) { 3104 remaining_time--; 3105 msleep(1000); 3106 } 3107 3108 if (remaining_time == 0) 3109 IWL_ERR(mvm, "Timed out waiting for HW restart!\n"); 3110 } 3111 3112 ieee80211_iterate_active_interfaces_atomic( 3113 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 3114 iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif); 3115 3116 return 0; 3117 } 3118 3119 const struct file_operations iwl_dbgfs_d3_test_ops = { 3120 .llseek = no_llseek, 3121 .open = iwl_mvm_d3_test_open, 3122 .read = iwl_mvm_d3_test_read, 3123 .release = iwl_mvm_d3_test_release, 3124 }; 3125 #endif 3126