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_TKIP: 603 if (!sta) 604 data->kek_kck_cmd->gtk_cipher = 605 cpu_to_le32(STA_KEY_FLG_TKIP); 606 return; 607 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 608 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 609 data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_GCMP); 610 return; 611 case WLAN_CIPHER_SUITE_AES_CMAC: 612 data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_CCM); 613 return; 614 case WLAN_CIPHER_SUITE_CCMP: 615 if (!sta) 616 data->kek_kck_cmd->gtk_cipher = 617 cpu_to_le32(STA_KEY_FLG_CCM); 618 return; 619 case WLAN_CIPHER_SUITE_GCMP: 620 case WLAN_CIPHER_SUITE_GCMP_256: 621 if (!sta) 622 data->kek_kck_cmd->gtk_cipher = 623 cpu_to_le32(STA_KEY_FLG_GCMP); 624 return; 625 } 626 } 627 628 static int iwl_mvm_send_patterns_v1(struct iwl_mvm *mvm, 629 struct cfg80211_wowlan *wowlan) 630 { 631 struct iwl_wowlan_patterns_cmd_v1 *pattern_cmd; 632 struct iwl_host_cmd cmd = { 633 .id = WOWLAN_PATTERNS, 634 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 635 }; 636 int i, err; 637 638 if (!wowlan->n_patterns) 639 return 0; 640 641 cmd.len[0] = struct_size(pattern_cmd, patterns, wowlan->n_patterns); 642 643 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL); 644 if (!pattern_cmd) 645 return -ENOMEM; 646 647 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns); 648 649 for (i = 0; i < wowlan->n_patterns; i++) { 650 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8); 651 652 memcpy(&pattern_cmd->patterns[i].mask, 653 wowlan->patterns[i].mask, mask_len); 654 memcpy(&pattern_cmd->patterns[i].pattern, 655 wowlan->patterns[i].pattern, 656 wowlan->patterns[i].pattern_len); 657 pattern_cmd->patterns[i].mask_size = mask_len; 658 pattern_cmd->patterns[i].pattern_size = 659 wowlan->patterns[i].pattern_len; 660 } 661 662 cmd.data[0] = pattern_cmd; 663 err = iwl_mvm_send_cmd(mvm, &cmd); 664 kfree(pattern_cmd); 665 return err; 666 } 667 668 static int iwl_mvm_send_patterns(struct iwl_mvm *mvm, 669 struct ieee80211_vif *vif, 670 struct cfg80211_wowlan *wowlan) 671 { 672 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 673 struct iwl_wowlan_patterns_cmd *pattern_cmd; 674 struct iwl_host_cmd cmd = { 675 .id = WOWLAN_PATTERNS, 676 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 677 }; 678 int i, err; 679 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id, 680 IWL_FW_CMD_VER_UNKNOWN); 681 682 if (!wowlan->n_patterns) 683 return 0; 684 685 cmd.len[0] = sizeof(*pattern_cmd) + 686 wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern_v2); 687 688 pattern_cmd = kzalloc(cmd.len[0], GFP_KERNEL); 689 if (!pattern_cmd) 690 return -ENOMEM; 691 692 pattern_cmd->n_patterns = wowlan->n_patterns; 693 if (ver >= 3) 694 pattern_cmd->sta_id = mvmvif->ap_sta_id; 695 696 for (i = 0; i < wowlan->n_patterns; i++) { 697 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8); 698 699 pattern_cmd->patterns[i].pattern_type = 700 WOWLAN_PATTERN_TYPE_BITMASK; 701 702 memcpy(&pattern_cmd->patterns[i].u.bitmask.mask, 703 wowlan->patterns[i].mask, mask_len); 704 memcpy(&pattern_cmd->patterns[i].u.bitmask.pattern, 705 wowlan->patterns[i].pattern, 706 wowlan->patterns[i].pattern_len); 707 pattern_cmd->patterns[i].u.bitmask.mask_size = mask_len; 708 pattern_cmd->patterns[i].u.bitmask.pattern_size = 709 wowlan->patterns[i].pattern_len; 710 } 711 712 cmd.data[0] = pattern_cmd; 713 err = iwl_mvm_send_cmd(mvm, &cmd); 714 kfree(pattern_cmd); 715 return err; 716 } 717 718 static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 719 struct ieee80211_sta *ap_sta) 720 { 721 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 722 struct ieee80211_chanctx_conf *ctx; 723 u8 chains_static, chains_dynamic; 724 struct cfg80211_chan_def chandef; 725 int ret, i; 726 struct iwl_binding_cmd_v1 binding_cmd = {}; 727 struct iwl_time_quota_cmd quota_cmd = {}; 728 struct iwl_time_quota_data *quota; 729 u32 status; 730 731 if (WARN_ON_ONCE(iwl_mvm_is_cdb_supported(mvm))) 732 return -EINVAL; 733 734 /* add back the PHY */ 735 if (WARN_ON(!mvmvif->phy_ctxt)) 736 return -EINVAL; 737 738 rcu_read_lock(); 739 ctx = rcu_dereference(vif->bss_conf.chanctx_conf); 740 if (WARN_ON(!ctx)) { 741 rcu_read_unlock(); 742 return -EINVAL; 743 } 744 chandef = ctx->def; 745 chains_static = ctx->rx_chains_static; 746 chains_dynamic = ctx->rx_chains_dynamic; 747 rcu_read_unlock(); 748 749 ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt, &chandef, 750 chains_static, chains_dynamic); 751 if (ret) 752 return ret; 753 754 /* add back the MAC */ 755 mvmvif->uploaded = false; 756 757 if (WARN_ON(!vif->cfg.assoc)) 758 return -EINVAL; 759 760 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 761 if (ret) 762 return ret; 763 764 /* add back binding - XXX refactor? */ 765 binding_cmd.id_and_color = 766 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id, 767 mvmvif->phy_ctxt->color)); 768 binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD); 769 binding_cmd.phy = 770 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id, 771 mvmvif->phy_ctxt->color)); 772 binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 773 mvmvif->color)); 774 for (i = 1; i < MAX_MACS_IN_BINDING; i++) 775 binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID); 776 777 status = 0; 778 ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD, 779 IWL_BINDING_CMD_SIZE_V1, &binding_cmd, 780 &status); 781 if (ret) { 782 IWL_ERR(mvm, "Failed to add binding: %d\n", ret); 783 return ret; 784 } 785 786 if (status) { 787 IWL_ERR(mvm, "Binding command failed: %u\n", status); 788 return -EIO; 789 } 790 791 ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false, 0); 792 if (ret) 793 return ret; 794 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], ap_sta); 795 796 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 797 if (ret) 798 return ret; 799 800 /* and some quota */ 801 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, 0); 802 quota->id_and_color = 803 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id, 804 mvmvif->phy_ctxt->color)); 805 quota->quota = cpu_to_le32(IWL_MVM_MAX_QUOTA); 806 quota->max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA); 807 808 for (i = 1; i < MAX_BINDINGS; i++) { 809 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, i); 810 quota->id_and_color = cpu_to_le32(FW_CTXT_INVALID); 811 } 812 813 ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0, 814 iwl_mvm_quota_cmd_size(mvm), "a_cmd); 815 if (ret) 816 IWL_ERR(mvm, "Failed to send quota: %d\n", ret); 817 818 if (iwl_mvm_is_lar_supported(mvm) && iwl_mvm_init_fw_regd(mvm)) 819 IWL_ERR(mvm, "Failed to initialize D3 LAR information\n"); 820 821 return 0; 822 } 823 824 static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm, 825 struct ieee80211_vif *vif) 826 { 827 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 828 struct iwl_nonqos_seq_query_cmd query_cmd = { 829 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET), 830 .mac_id_n_color = 831 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 832 mvmvif->color)), 833 }; 834 struct iwl_host_cmd cmd = { 835 .id = NON_QOS_TX_COUNTER_CMD, 836 .flags = CMD_WANT_SKB, 837 }; 838 int err; 839 u32 size; 840 841 cmd.data[0] = &query_cmd; 842 cmd.len[0] = sizeof(query_cmd); 843 844 err = iwl_mvm_send_cmd(mvm, &cmd); 845 if (err) 846 return err; 847 848 size = iwl_rx_packet_payload_len(cmd.resp_pkt); 849 if (size < sizeof(__le16)) { 850 err = -EINVAL; 851 } else { 852 err = le16_to_cpup((__le16 *)cmd.resp_pkt->data); 853 /* firmware returns next, not last-used seqno */ 854 err = (u16) (err - 0x10); 855 } 856 857 iwl_free_resp(&cmd); 858 return err; 859 } 860 861 void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 862 { 863 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 864 struct iwl_nonqos_seq_query_cmd query_cmd = { 865 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET), 866 .mac_id_n_color = 867 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 868 mvmvif->color)), 869 .value = cpu_to_le16(mvmvif->seqno), 870 }; 871 872 /* return if called during restart, not resume from D3 */ 873 if (!mvmvif->seqno_valid) 874 return; 875 876 mvmvif->seqno_valid = false; 877 878 if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0, 879 sizeof(query_cmd), &query_cmd)) 880 IWL_ERR(mvm, "failed to set non-QoS seqno\n"); 881 } 882 883 static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm) 884 { 885 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 886 887 iwl_mvm_stop_device(mvm); 888 /* 889 * Set the HW restart bit -- this is mostly true as we're 890 * going to load new firmware and reprogram that, though 891 * the reprogramming is going to be manual to avoid adding 892 * all the MACs that aren't support. 893 * We don't have to clear up everything though because the 894 * reprogramming is manual. When we resume, we'll actually 895 * go through a proper restart sequence again to switch 896 * back to the runtime firmware image. 897 */ 898 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 899 900 /* the fw is reset, so all the keys are cleared */ 901 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); 902 903 mvm->ptk_ivlen = 0; 904 mvm->ptk_icvlen = 0; 905 mvm->ptk_ivlen = 0; 906 mvm->ptk_icvlen = 0; 907 908 return iwl_mvm_load_d3_fw(mvm); 909 } 910 911 static int 912 iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm, 913 struct cfg80211_wowlan *wowlan, 914 struct iwl_wowlan_config_cmd *wowlan_config_cmd, 915 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif, 916 struct ieee80211_sta *ap_sta) 917 { 918 struct iwl_mvm_sta *mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta); 919 920 /* TODO: wowlan_config_cmd->wowlan_ba_teardown_tids */ 921 922 wowlan_config_cmd->is_11n_connection = 923 ap_sta->deflink.ht_cap.ht_supported; 924 wowlan_config_cmd->flags = ENABLE_L3_FILTERING | 925 ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING; 926 927 if (iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_CONFIGURATION, 0) < 6) { 928 /* Query the last used seqno and set it */ 929 int ret = iwl_mvm_get_last_nonqos_seq(mvm, vif); 930 931 if (ret < 0) 932 return ret; 933 934 wowlan_config_cmd->non_qos_seq = cpu_to_le16(ret); 935 } 936 937 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, wowlan_config_cmd); 938 939 if (wowlan->disconnect) 940 wowlan_config_cmd->wakeup_filter |= 941 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS | 942 IWL_WOWLAN_WAKEUP_LINK_CHANGE); 943 if (wowlan->magic_pkt) 944 wowlan_config_cmd->wakeup_filter |= 945 cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET); 946 if (wowlan->gtk_rekey_failure) 947 wowlan_config_cmd->wakeup_filter |= 948 cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL); 949 if (wowlan->eap_identity_req) 950 wowlan_config_cmd->wakeup_filter |= 951 cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ); 952 if (wowlan->four_way_handshake) 953 wowlan_config_cmd->wakeup_filter |= 954 cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE); 955 if (wowlan->n_patterns) 956 wowlan_config_cmd->wakeup_filter |= 957 cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH); 958 959 if (wowlan->rfkill_release) 960 wowlan_config_cmd->wakeup_filter |= 961 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT); 962 963 if (wowlan->tcp) { 964 /* 965 * Set the "link change" (really "link lost") flag as well 966 * since that implies losing the TCP connection. 967 */ 968 wowlan_config_cmd->wakeup_filter |= 969 cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS | 970 IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE | 971 IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET | 972 IWL_WOWLAN_WAKEUP_LINK_CHANGE); 973 } 974 975 if (wowlan->any) { 976 wowlan_config_cmd->wakeup_filter |= 977 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS | 978 IWL_WOWLAN_WAKEUP_LINK_CHANGE | 979 IWL_WOWLAN_WAKEUP_RX_FRAME | 980 IWL_WOWLAN_WAKEUP_BCN_FILTERING); 981 } 982 983 return 0; 984 } 985 986 static int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm, 987 struct ieee80211_vif *vif) 988 { 989 bool unified = fw_has_capa(&mvm->fw->ucode_capa, 990 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 991 struct wowlan_key_reprogram_data key_data = {}; 992 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 993 int ret; 994 u8 cmd_ver; 995 size_t cmd_size; 996 997 if (!unified) { 998 /* 999 * if we have to configure keys, call ieee80211_iter_keys(), 1000 * as we need non-atomic context in order to take the 1001 * required locks. 1002 */ 1003 /* 1004 * Note that currently we don't use CMD_ASYNC in the iterator. 1005 * In case of key_data.configure_keys, all the configured 1006 * commands are SYNC, and iwl_mvm_wowlan_program_keys() will 1007 * take care of locking/unlocking mvm->mutex. 1008 */ 1009 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_program_keys, 1010 &key_data); 1011 1012 if (key_data.error) 1013 return -EIO; 1014 } 1015 1016 ret = iwl_mvm_wowlan_config_rsc_tsc(mvm, vif); 1017 if (ret) 1018 return ret; 1019 1020 if (!fw_has_api(&mvm->fw->ucode_capa, 1021 IWL_UCODE_TLV_API_TKIP_MIC_KEYS)) { 1022 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TKIP_PARAM, 1023 IWL_FW_CMD_VER_UNKNOWN); 1024 struct wowlan_key_tkip_data tkip_data = {}; 1025 int size; 1026 1027 if (ver == 2) { 1028 size = sizeof(tkip_data.tkip); 1029 tkip_data.tkip.sta_id = 1030 cpu_to_le32(mvmvif->ap_sta_id); 1031 } else if (ver == 1 || ver == IWL_FW_CMD_VER_UNKNOWN) { 1032 size = sizeof(struct iwl_wowlan_tkip_params_cmd_ver_1); 1033 } else { 1034 WARN_ON_ONCE(1); 1035 return -EINVAL; 1036 } 1037 1038 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_get_tkip_data, 1039 &tkip_data); 1040 1041 if (tkip_data.have_tkip_keys) { 1042 /* send relevant data according to CMD version */ 1043 ret = iwl_mvm_send_cmd_pdu(mvm, 1044 WOWLAN_TKIP_PARAM, 1045 CMD_ASYNC, size, 1046 &tkip_data.tkip); 1047 if (ret) 1048 return ret; 1049 } 1050 } 1051 1052 /* configure rekey data only if offloaded rekey is supported (d3) */ 1053 if (mvmvif->rekey_data.valid) { 1054 struct iwl_wowlan_kek_kck_material_cmd_v4 kek_kck_cmd = {}; 1055 struct iwl_wowlan_kek_kck_material_cmd_v4 *_kek_kck_cmd = 1056 &kek_kck_cmd; 1057 struct wowlan_key_gtk_type_iter gtk_type_data = { 1058 .kek_kck_cmd = _kek_kck_cmd, 1059 }; 1060 1061 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, 1062 WOWLAN_KEK_KCK_MATERIAL, 1063 IWL_FW_CMD_VER_UNKNOWN); 1064 if (WARN_ON(cmd_ver != 2 && cmd_ver != 3 && cmd_ver != 4 && 1065 cmd_ver != IWL_FW_CMD_VER_UNKNOWN)) 1066 return -EINVAL; 1067 1068 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_gtk_type_iter, 1069 >k_type_data); 1070 1071 memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck, 1072 mvmvif->rekey_data.kck_len); 1073 kek_kck_cmd.kck_len = cpu_to_le16(mvmvif->rekey_data.kck_len); 1074 memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek, 1075 mvmvif->rekey_data.kek_len); 1076 kek_kck_cmd.kek_len = cpu_to_le16(mvmvif->rekey_data.kek_len); 1077 kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr; 1078 kek_kck_cmd.akm = cpu_to_le32(mvmvif->rekey_data.akm); 1079 kek_kck_cmd.sta_id = cpu_to_le32(mvmvif->ap_sta_id); 1080 1081 if (cmd_ver == 4) { 1082 cmd_size = sizeof(struct iwl_wowlan_kek_kck_material_cmd_v4); 1083 } else { 1084 if (cmd_ver == 3) 1085 cmd_size = 1086 sizeof(struct iwl_wowlan_kek_kck_material_cmd_v3); 1087 else 1088 cmd_size = 1089 sizeof(struct iwl_wowlan_kek_kck_material_cmd_v2); 1090 /* skip the sta_id at the beginning */ 1091 _kek_kck_cmd = (void *) 1092 ((u8 *)_kek_kck_cmd + sizeof(kek_kck_cmd.sta_id)); 1093 } 1094 1095 IWL_DEBUG_WOWLAN(mvm, "setting akm %d\n", 1096 mvmvif->rekey_data.akm); 1097 1098 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_KEK_KCK_MATERIAL, 1099 CMD_ASYNC, cmd_size, _kek_kck_cmd); 1100 if (ret) 1101 return ret; 1102 } 1103 1104 return 0; 1105 } 1106 1107 static int 1108 iwl_mvm_wowlan_config(struct iwl_mvm *mvm, 1109 struct cfg80211_wowlan *wowlan, 1110 struct iwl_wowlan_config_cmd *wowlan_config_cmd, 1111 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif, 1112 struct ieee80211_sta *ap_sta) 1113 { 1114 int ret; 1115 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 1116 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1117 1118 mvm->offload_tid = wowlan_config_cmd->offloading_tid; 1119 1120 if (!unified_image) { 1121 ret = iwl_mvm_switch_to_d3(mvm); 1122 if (ret) 1123 return ret; 1124 1125 ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta); 1126 if (ret) 1127 return ret; 1128 } 1129 1130 /* 1131 * This needs to be unlocked due to lock ordering 1132 * constraints. Since we're in the suspend path 1133 * that isn't really a problem though. 1134 */ 1135 mutex_unlock(&mvm->mutex); 1136 ret = iwl_mvm_wowlan_config_key_params(mvm, vif); 1137 mutex_lock(&mvm->mutex); 1138 if (ret) 1139 return ret; 1140 1141 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0, 1142 sizeof(*wowlan_config_cmd), 1143 wowlan_config_cmd); 1144 if (ret) 1145 return ret; 1146 1147 if (fw_has_api(&mvm->fw->ucode_capa, 1148 IWL_UCODE_TLV_API_WOWLAN_TCP_SYN_WAKE)) 1149 ret = iwl_mvm_send_patterns(mvm, vif, wowlan); 1150 else 1151 ret = iwl_mvm_send_patterns_v1(mvm, wowlan); 1152 if (ret) 1153 return ret; 1154 1155 return iwl_mvm_send_proto_offload(mvm, vif, false, true, 0); 1156 } 1157 1158 static int 1159 iwl_mvm_netdetect_config(struct iwl_mvm *mvm, 1160 struct cfg80211_wowlan *wowlan, 1161 struct cfg80211_sched_scan_request *nd_config, 1162 struct ieee80211_vif *vif) 1163 { 1164 int ret; 1165 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 1166 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1167 1168 if (!unified_image) { 1169 ret = iwl_mvm_switch_to_d3(mvm); 1170 if (ret) 1171 return ret; 1172 } else { 1173 /* In theory, we wouldn't have to stop a running sched 1174 * scan in order to start another one (for 1175 * net-detect). But in practice this doesn't seem to 1176 * work properly, so stop any running sched_scan now. 1177 */ 1178 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 1179 if (ret) 1180 return ret; 1181 } 1182 1183 ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies, 1184 IWL_MVM_SCAN_NETDETECT); 1185 if (ret) 1186 return ret; 1187 1188 if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels)) 1189 return -EBUSY; 1190 1191 /* save the sched scan matchsets... */ 1192 if (nd_config->n_match_sets) { 1193 mvm->nd_match_sets = kmemdup(nd_config->match_sets, 1194 sizeof(*nd_config->match_sets) * 1195 nd_config->n_match_sets, 1196 GFP_KERNEL); 1197 if (mvm->nd_match_sets) 1198 mvm->n_nd_match_sets = nd_config->n_match_sets; 1199 } 1200 1201 /* ...and the sched scan channels for later reporting */ 1202 mvm->nd_channels = kmemdup(nd_config->channels, 1203 sizeof(*nd_config->channels) * 1204 nd_config->n_channels, 1205 GFP_KERNEL); 1206 if (mvm->nd_channels) 1207 mvm->n_nd_channels = nd_config->n_channels; 1208 1209 return 0; 1210 } 1211 1212 static void iwl_mvm_free_nd(struct iwl_mvm *mvm) 1213 { 1214 kfree(mvm->nd_match_sets); 1215 mvm->nd_match_sets = NULL; 1216 mvm->n_nd_match_sets = 0; 1217 kfree(mvm->nd_channels); 1218 mvm->nd_channels = NULL; 1219 mvm->n_nd_channels = 0; 1220 } 1221 1222 static int __iwl_mvm_suspend(struct ieee80211_hw *hw, 1223 struct cfg80211_wowlan *wowlan, 1224 bool test) 1225 { 1226 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1227 struct ieee80211_vif *vif = NULL; 1228 struct iwl_mvm_vif *mvmvif = NULL; 1229 struct ieee80211_sta *ap_sta = NULL; 1230 struct iwl_d3_manager_config d3_cfg_cmd_data = { 1231 /* 1232 * Program the minimum sleep time to 10 seconds, as many 1233 * platforms have issues processing a wakeup signal while 1234 * still being in the process of suspending. 1235 */ 1236 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000), 1237 }; 1238 struct iwl_host_cmd d3_cfg_cmd = { 1239 .id = D3_CONFIG_CMD, 1240 .flags = CMD_WANT_SKB | CMD_SEND_IN_D3, 1241 .data[0] = &d3_cfg_cmd_data, 1242 .len[0] = sizeof(d3_cfg_cmd_data), 1243 }; 1244 int ret; 1245 int len __maybe_unused; 1246 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 1247 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1248 1249 if (!wowlan) { 1250 /* 1251 * mac80211 shouldn't get here, but for D3 test 1252 * it doesn't warrant a warning 1253 */ 1254 WARN_ON(!test); 1255 return -EINVAL; 1256 } 1257 1258 mutex_lock(&mvm->mutex); 1259 1260 set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 1261 1262 synchronize_net(); 1263 1264 vif = iwl_mvm_get_bss_vif(mvm); 1265 if (IS_ERR_OR_NULL(vif)) { 1266 ret = 1; 1267 goto out_noreset; 1268 } 1269 1270 mvmvif = iwl_mvm_vif_from_mac80211(vif); 1271 1272 if (mvmvif->ap_sta_id == IWL_MVM_INVALID_STA) { 1273 /* if we're not associated, this must be netdetect */ 1274 if (!wowlan->nd_config) { 1275 ret = 1; 1276 goto out_noreset; 1277 } 1278 1279 ret = iwl_mvm_netdetect_config( 1280 mvm, wowlan, wowlan->nd_config, vif); 1281 if (ret) 1282 goto out; 1283 1284 mvm->net_detect = true; 1285 } else { 1286 struct iwl_wowlan_config_cmd wowlan_config_cmd = {}; 1287 1288 wowlan_config_cmd.sta_id = mvmvif->ap_sta_id; 1289 1290 ap_sta = rcu_dereference_protected( 1291 mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], 1292 lockdep_is_held(&mvm->mutex)); 1293 if (IS_ERR_OR_NULL(ap_sta)) { 1294 ret = -EINVAL; 1295 goto out_noreset; 1296 } 1297 1298 ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd, 1299 vif, mvmvif, ap_sta); 1300 if (ret) 1301 goto out_noreset; 1302 ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd, 1303 vif, mvmvif, ap_sta); 1304 if (ret) 1305 goto out; 1306 1307 mvm->net_detect = false; 1308 } 1309 1310 ret = iwl_mvm_power_update_device(mvm); 1311 if (ret) 1312 goto out; 1313 1314 ret = iwl_mvm_power_update_mac(mvm); 1315 if (ret) 1316 goto out; 1317 1318 #ifdef CONFIG_IWLWIFI_DEBUGFS 1319 if (mvm->d3_wake_sysassert) 1320 d3_cfg_cmd_data.wakeup_flags |= 1321 cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR); 1322 #endif 1323 1324 /* 1325 * Prior to 9000 device family the driver needs to stop the dbg 1326 * recording before entering D3. In later devices the FW stops the 1327 * recording automatically. 1328 */ 1329 if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_9000) 1330 iwl_fw_dbg_stop_restart_recording(&mvm->fwrt, NULL, true); 1331 1332 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_D3; 1333 1334 /* must be last -- this switches firmware state */ 1335 ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd); 1336 if (ret) 1337 goto out; 1338 #ifdef CONFIG_IWLWIFI_DEBUGFS 1339 len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt); 1340 if (len >= sizeof(u32)) { 1341 mvm->d3_test_pme_ptr = 1342 le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data); 1343 } 1344 #endif 1345 iwl_free_resp(&d3_cfg_cmd); 1346 1347 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1348 1349 ret = iwl_trans_d3_suspend(mvm->trans, test, !unified_image); 1350 out: 1351 if (ret < 0) { 1352 iwl_mvm_free_nd(mvm); 1353 1354 if (!unified_image) { 1355 if (mvm->fw_restart > 0) { 1356 mvm->fw_restart--; 1357 ieee80211_restart_hw(mvm->hw); 1358 } 1359 } 1360 1361 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 1362 } 1363 out_noreset: 1364 mutex_unlock(&mvm->mutex); 1365 1366 return ret; 1367 } 1368 1369 int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) 1370 { 1371 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1372 1373 iwl_mvm_pause_tcm(mvm, true); 1374 1375 iwl_fw_runtime_suspend(&mvm->fwrt); 1376 1377 return __iwl_mvm_suspend(hw, wowlan, false); 1378 } 1379 1380 /* converted data from the different status responses */ 1381 struct iwl_wowlan_status_data { 1382 u64 replay_ctr; 1383 u32 num_of_gtk_rekeys; 1384 u32 received_beacons; 1385 u32 wakeup_reasons; 1386 u32 wake_packet_length; 1387 u32 wake_packet_bufsize; 1388 u16 pattern_number; 1389 u16 non_qos_seq_ctr; 1390 u16 qos_seq_ctr[8]; 1391 u8 tid_tear_down; 1392 1393 struct { 1394 /* including RX MIC key for TKIP */ 1395 u8 key[WOWLAN_KEY_MAX_SIZE]; 1396 u8 len; 1397 u8 flags; 1398 } gtk; 1399 1400 struct { 1401 /* 1402 * We store both the TKIP and AES representations 1403 * coming from the firmware because we decode the 1404 * data from there before we iterate the keys and 1405 * know which one we need. 1406 */ 1407 struct { 1408 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT]; 1409 } tkip, aes; 1410 1411 /* 1412 * We use -1 for when we have valid data but don't know 1413 * the key ID from firmware, and thus it needs to be 1414 * installed with the last key (depending on rekeying). 1415 */ 1416 s8 key_id; 1417 bool valid; 1418 } gtk_seq[2]; 1419 1420 struct { 1421 /* Same as above */ 1422 struct { 1423 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT]; 1424 u64 tx_pn; 1425 } tkip, aes; 1426 } ptk; 1427 1428 struct { 1429 u64 ipn; 1430 u8 key[WOWLAN_KEY_MAX_SIZE]; 1431 u8 len; 1432 u8 flags; 1433 } igtk; 1434 1435 u8 *wake_packet; 1436 }; 1437 1438 static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm, 1439 struct ieee80211_vif *vif, 1440 struct iwl_wowlan_status_data *status) 1441 { 1442 struct sk_buff *pkt = NULL; 1443 struct cfg80211_wowlan_wakeup wakeup = { 1444 .pattern_idx = -1, 1445 }; 1446 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; 1447 u32 reasons = status->wakeup_reasons; 1448 1449 if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) { 1450 wakeup_report = NULL; 1451 goto report; 1452 } 1453 1454 pm_wakeup_event(mvm->dev, 0); 1455 1456 if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET) 1457 wakeup.magic_pkt = true; 1458 1459 if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN) 1460 wakeup.pattern_idx = 1461 status->pattern_number; 1462 1463 if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 1464 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)) 1465 wakeup.disconnect = true; 1466 1467 if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE) 1468 wakeup.gtk_rekey_failure = true; 1469 1470 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 1471 wakeup.rfkill_release = true; 1472 1473 if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST) 1474 wakeup.eap_identity_req = true; 1475 1476 if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE) 1477 wakeup.four_way_handshake = true; 1478 1479 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS) 1480 wakeup.tcp_connlost = true; 1481 1482 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE) 1483 wakeup.tcp_nomoretokens = true; 1484 1485 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET) 1486 wakeup.tcp_match = true; 1487 1488 if (status->wake_packet) { 1489 int pktsize = status->wake_packet_bufsize; 1490 int pktlen = status->wake_packet_length; 1491 const u8 *pktdata = status->wake_packet; 1492 const struct ieee80211_hdr *hdr = (const void *)pktdata; 1493 int truncated = pktlen - pktsize; 1494 1495 /* this would be a firmware bug */ 1496 if (WARN_ON_ONCE(truncated < 0)) 1497 truncated = 0; 1498 1499 if (ieee80211_is_data(hdr->frame_control)) { 1500 int hdrlen = ieee80211_hdrlen(hdr->frame_control); 1501 int ivlen = 0, icvlen = 4; /* also FCS */ 1502 1503 pkt = alloc_skb(pktsize, GFP_KERNEL); 1504 if (!pkt) 1505 goto report; 1506 1507 skb_put_data(pkt, pktdata, hdrlen); 1508 pktdata += hdrlen; 1509 pktsize -= hdrlen; 1510 1511 if (ieee80211_has_protected(hdr->frame_control)) { 1512 /* 1513 * This is unlocked and using gtk_i(c)vlen, 1514 * but since everything is under RTNL still 1515 * that's not really a problem - changing 1516 * it would be difficult. 1517 */ 1518 if (is_multicast_ether_addr(hdr->addr1)) { 1519 ivlen = mvm->gtk_ivlen; 1520 icvlen += mvm->gtk_icvlen; 1521 } else { 1522 ivlen = mvm->ptk_ivlen; 1523 icvlen += mvm->ptk_icvlen; 1524 } 1525 } 1526 1527 /* if truncated, FCS/ICV is (partially) gone */ 1528 if (truncated >= icvlen) { 1529 icvlen = 0; 1530 truncated -= icvlen; 1531 } else { 1532 icvlen -= truncated; 1533 truncated = 0; 1534 } 1535 1536 pktsize -= ivlen + icvlen; 1537 pktdata += ivlen; 1538 1539 skb_put_data(pkt, pktdata, pktsize); 1540 1541 if (ieee80211_data_to_8023(pkt, vif->addr, vif->type)) 1542 goto report; 1543 wakeup.packet = pkt->data; 1544 wakeup.packet_present_len = pkt->len; 1545 wakeup.packet_len = pkt->len - truncated; 1546 wakeup.packet_80211 = false; 1547 } else { 1548 int fcslen = 4; 1549 1550 if (truncated >= 4) { 1551 truncated -= 4; 1552 fcslen = 0; 1553 } else { 1554 fcslen -= truncated; 1555 truncated = 0; 1556 } 1557 pktsize -= fcslen; 1558 wakeup.packet = status->wake_packet; 1559 wakeup.packet_present_len = pktsize; 1560 wakeup.packet_len = pktlen - truncated; 1561 wakeup.packet_80211 = true; 1562 } 1563 } 1564 1565 report: 1566 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); 1567 kfree_skb(pkt); 1568 } 1569 1570 static void iwl_mvm_le64_to_aes_seq(__le64 le_pn, struct ieee80211_key_seq *seq) 1571 { 1572 u64 pn = le64_to_cpu(le_pn); 1573 1574 seq->ccmp.pn[0] = pn >> 40; 1575 seq->ccmp.pn[1] = pn >> 32; 1576 seq->ccmp.pn[2] = pn >> 24; 1577 seq->ccmp.pn[3] = pn >> 16; 1578 seq->ccmp.pn[4] = pn >> 8; 1579 seq->ccmp.pn[5] = pn; 1580 } 1581 1582 static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc, 1583 struct ieee80211_key_seq *seq) 1584 { 1585 iwl_mvm_le64_to_aes_seq(sc->pn, seq); 1586 } 1587 1588 static void iwl_mvm_le64_to_tkip_seq(__le64 le_pn, struct ieee80211_key_seq *seq) 1589 { 1590 u64 pn = le64_to_cpu(le_pn); 1591 1592 seq->tkip.iv16 = (u16)pn; 1593 seq->tkip.iv32 = (u32)(pn >> 16); 1594 } 1595 1596 static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc, 1597 struct ieee80211_key_seq *seq) 1598 { 1599 seq->tkip.iv32 = le32_to_cpu(sc->iv32); 1600 seq->tkip.iv16 = le16_to_cpu(sc->iv16); 1601 } 1602 1603 static void iwl_mvm_set_key_rx_seq_tids(struct ieee80211_key_conf *key, 1604 struct ieee80211_key_seq *seq) 1605 { 1606 int tid; 1607 1608 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) 1609 ieee80211_set_key_rx_seq(key, tid, &seq[tid]); 1610 } 1611 1612 static void iwl_mvm_set_aes_ptk_rx_seq(struct iwl_mvm *mvm, 1613 struct iwl_wowlan_status_data *status, 1614 struct ieee80211_sta *sta, 1615 struct ieee80211_key_conf *key) 1616 { 1617 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1618 struct iwl_mvm_key_pn *ptk_pn; 1619 int tid; 1620 1621 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.aes.seq); 1622 1623 if (!iwl_mvm_has_new_rx_api(mvm)) 1624 return; 1625 1626 1627 rcu_read_lock(); 1628 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]); 1629 if (WARN_ON(!ptk_pn)) { 1630 rcu_read_unlock(); 1631 return; 1632 } 1633 1634 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1635 int i; 1636 1637 for (i = 1; i < mvm->trans->num_rx_queues; i++) 1638 memcpy(ptk_pn->q[i].pn[tid], 1639 status->ptk.aes.seq[tid].ccmp.pn, 1640 IEEE80211_CCMP_PN_LEN); 1641 } 1642 rcu_read_unlock(); 1643 } 1644 1645 static void iwl_mvm_convert_key_counters(struct iwl_wowlan_status_data *status, 1646 union iwl_all_tsc_rsc *sc) 1647 { 1648 int i; 1649 1650 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT); 1651 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC); 1652 1653 /* GTK RX counters */ 1654 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1655 iwl_mvm_tkip_sc_to_seq(&sc->tkip.multicast_rsc[i], 1656 &status->gtk_seq[0].tkip.seq[i]); 1657 iwl_mvm_aes_sc_to_seq(&sc->aes.multicast_rsc[i], 1658 &status->gtk_seq[0].aes.seq[i]); 1659 } 1660 status->gtk_seq[0].valid = true; 1661 status->gtk_seq[0].key_id = -1; 1662 1663 /* PTK TX counter */ 1664 status->ptk.tkip.tx_pn = (u64)le16_to_cpu(sc->tkip.tsc.iv16) | 1665 ((u64)le32_to_cpu(sc->tkip.tsc.iv32) << 16); 1666 status->ptk.aes.tx_pn = le64_to_cpu(sc->aes.tsc.pn); 1667 1668 /* PTK RX counters */ 1669 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1670 iwl_mvm_tkip_sc_to_seq(&sc->tkip.unicast_rsc[i], 1671 &status->ptk.tkip.seq[i]); 1672 iwl_mvm_aes_sc_to_seq(&sc->aes.unicast_rsc[i], 1673 &status->ptk.aes.seq[i]); 1674 } 1675 } 1676 1677 static void 1678 iwl_mvm_convert_key_counters_v5_gtk_seq(struct iwl_wowlan_status_data *status, 1679 struct iwl_wowlan_all_rsc_tsc_v5 *sc, 1680 unsigned int idx, unsigned int key_id) 1681 { 1682 int tid; 1683 1684 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1685 iwl_mvm_le64_to_tkip_seq(sc->mcast_rsc[idx][tid], 1686 &status->gtk_seq[idx].tkip.seq[tid]); 1687 iwl_mvm_le64_to_aes_seq(sc->mcast_rsc[idx][tid], 1688 &status->gtk_seq[idx].aes.seq[tid]); 1689 } 1690 1691 status->gtk_seq[idx].valid = true; 1692 status->gtk_seq[idx].key_id = key_id; 1693 } 1694 1695 static void 1696 iwl_mvm_convert_key_counters_v5(struct iwl_wowlan_status_data *status, 1697 struct iwl_wowlan_all_rsc_tsc_v5 *sc) 1698 { 1699 int i, tid; 1700 1701 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT); 1702 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC); 1703 BUILD_BUG_ON(ARRAY_SIZE(sc->mcast_rsc) != ARRAY_SIZE(status->gtk_seq)); 1704 1705 /* GTK RX counters */ 1706 for (i = 0; i < ARRAY_SIZE(sc->mcast_key_id_map); i++) { 1707 u8 entry = sc->mcast_key_id_map[i]; 1708 1709 if (entry < ARRAY_SIZE(sc->mcast_rsc)) 1710 iwl_mvm_convert_key_counters_v5_gtk_seq(status, sc, 1711 entry, i); 1712 } 1713 1714 /* PTK TX counters not needed, assigned in device */ 1715 1716 /* PTK RX counters */ 1717 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1718 iwl_mvm_le64_to_tkip_seq(sc->ucast_rsc[tid], 1719 &status->ptk.tkip.seq[tid]); 1720 iwl_mvm_le64_to_aes_seq(sc->ucast_rsc[tid], 1721 &status->ptk.aes.seq[tid]); 1722 } 1723 } 1724 1725 static void iwl_mvm_set_key_rx_seq_idx(struct ieee80211_key_conf *key, 1726 struct iwl_wowlan_status_data *status, 1727 int idx) 1728 { 1729 switch (key->cipher) { 1730 case WLAN_CIPHER_SUITE_CCMP: 1731 case WLAN_CIPHER_SUITE_GCMP: 1732 case WLAN_CIPHER_SUITE_GCMP_256: 1733 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].aes.seq); 1734 break; 1735 case WLAN_CIPHER_SUITE_TKIP: 1736 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].tkip.seq); 1737 break; 1738 default: 1739 WARN_ON(1); 1740 } 1741 } 1742 1743 static void iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf *key, 1744 struct iwl_wowlan_status_data *status, 1745 bool installed) 1746 { 1747 int i; 1748 1749 for (i = 0; i < ARRAY_SIZE(status->gtk_seq); i++) { 1750 if (!status->gtk_seq[i].valid) 1751 continue; 1752 1753 /* Handle the case where we know the key ID */ 1754 if (status->gtk_seq[i].key_id == key->keyidx) { 1755 s8 new_key_id = -1; 1756 1757 if (status->num_of_gtk_rekeys) 1758 new_key_id = status->gtk.flags & 1759 IWL_WOWLAN_GTK_IDX_MASK; 1760 1761 /* Don't install a new key's value to an old key */ 1762 if (new_key_id != key->keyidx) 1763 iwl_mvm_set_key_rx_seq_idx(key, status, i); 1764 continue; 1765 } 1766 1767 /* handle the case where we didn't, last key only */ 1768 if (status->gtk_seq[i].key_id == -1 && 1769 (!status->num_of_gtk_rekeys || installed)) 1770 iwl_mvm_set_key_rx_seq_idx(key, status, i); 1771 } 1772 } 1773 1774 struct iwl_mvm_d3_gtk_iter_data { 1775 struct iwl_mvm *mvm; 1776 struct iwl_wowlan_status_data *status; 1777 void *last_gtk; 1778 u32 cipher; 1779 bool find_phase, unhandled_cipher; 1780 int num_keys; 1781 }; 1782 1783 static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw, 1784 struct ieee80211_vif *vif, 1785 struct ieee80211_sta *sta, 1786 struct ieee80211_key_conf *key, 1787 void *_data) 1788 { 1789 struct iwl_mvm_d3_gtk_iter_data *data = _data; 1790 struct iwl_wowlan_status_data *status = data->status; 1791 1792 if (data->unhandled_cipher) 1793 return; 1794 1795 switch (key->cipher) { 1796 case WLAN_CIPHER_SUITE_WEP40: 1797 case WLAN_CIPHER_SUITE_WEP104: 1798 /* ignore WEP completely, nothing to do */ 1799 return; 1800 case WLAN_CIPHER_SUITE_CCMP: 1801 case WLAN_CIPHER_SUITE_GCMP: 1802 case WLAN_CIPHER_SUITE_GCMP_256: 1803 case WLAN_CIPHER_SUITE_TKIP: 1804 /* we support these */ 1805 break; 1806 default: 1807 /* everything else (even CMAC for MFP) - disconnect from AP */ 1808 data->unhandled_cipher = true; 1809 return; 1810 } 1811 1812 data->num_keys++; 1813 1814 /* 1815 * pairwise key - update sequence counters only; 1816 * note that this assumes no TDLS sessions are active 1817 */ 1818 if (sta) { 1819 if (data->find_phase) 1820 return; 1821 1822 switch (key->cipher) { 1823 case WLAN_CIPHER_SUITE_CCMP: 1824 case WLAN_CIPHER_SUITE_GCMP: 1825 case WLAN_CIPHER_SUITE_GCMP_256: 1826 atomic64_set(&key->tx_pn, status->ptk.aes.tx_pn); 1827 iwl_mvm_set_aes_ptk_rx_seq(data->mvm, status, sta, key); 1828 break; 1829 case WLAN_CIPHER_SUITE_TKIP: 1830 atomic64_set(&key->tx_pn, status->ptk.tkip.tx_pn); 1831 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.tkip.seq); 1832 break; 1833 } 1834 1835 /* that's it for this key */ 1836 return; 1837 } 1838 1839 if (data->find_phase) { 1840 data->last_gtk = key; 1841 data->cipher = key->cipher; 1842 return; 1843 } 1844 1845 if (data->status->num_of_gtk_rekeys) 1846 ieee80211_remove_key(key); 1847 1848 if (data->last_gtk == key) 1849 iwl_mvm_set_key_rx_seq(key, data->status, false); 1850 } 1851 1852 static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm, 1853 struct ieee80211_vif *vif, 1854 struct iwl_wowlan_status_data *status) 1855 { 1856 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1857 struct iwl_mvm_d3_gtk_iter_data gtkdata = { 1858 .mvm = mvm, 1859 .status = status, 1860 }; 1861 u32 disconnection_reasons = 1862 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 1863 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH; 1864 1865 if (!status || !vif->bss_conf.bssid) 1866 return false; 1867 1868 if (status->wakeup_reasons & disconnection_reasons) 1869 return false; 1870 1871 /* find last GTK that we used initially, if any */ 1872 gtkdata.find_phase = true; 1873 ieee80211_iter_keys(mvm->hw, vif, 1874 iwl_mvm_d3_update_keys, >kdata); 1875 /* not trying to keep connections with MFP/unhandled ciphers */ 1876 if (gtkdata.unhandled_cipher) 1877 return false; 1878 if (!gtkdata.num_keys) 1879 goto out; 1880 if (!gtkdata.last_gtk) 1881 return false; 1882 1883 /* 1884 * invalidate all other GTKs that might still exist and update 1885 * the one that we used 1886 */ 1887 gtkdata.find_phase = false; 1888 ieee80211_iter_keys(mvm->hw, vif, 1889 iwl_mvm_d3_update_keys, >kdata); 1890 1891 IWL_DEBUG_WOWLAN(mvm, "num of GTK rekeying %d\n", 1892 status->num_of_gtk_rekeys); 1893 if (status->num_of_gtk_rekeys) { 1894 struct ieee80211_key_conf *key; 1895 struct { 1896 struct ieee80211_key_conf conf; 1897 u8 key[32]; 1898 } conf = { 1899 .conf.cipher = gtkdata.cipher, 1900 .conf.keyidx = 1901 status->gtk.flags & IWL_WOWLAN_GTK_IDX_MASK, 1902 }; 1903 __be64 replay_ctr; 1904 1905 IWL_DEBUG_WOWLAN(mvm, 1906 "Received from FW GTK cipher %d, key index %d\n", 1907 conf.conf.cipher, conf.conf.keyidx); 1908 1909 BUILD_BUG_ON(WLAN_KEY_LEN_CCMP != WLAN_KEY_LEN_GCMP); 1910 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_CCMP); 1911 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_GCMP_256); 1912 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_TKIP); 1913 BUILD_BUG_ON(sizeof(conf.key) < sizeof(status->gtk.key)); 1914 1915 memcpy(conf.conf.key, status->gtk.key, sizeof(status->gtk.key)); 1916 1917 switch (gtkdata.cipher) { 1918 case WLAN_CIPHER_SUITE_CCMP: 1919 case WLAN_CIPHER_SUITE_GCMP: 1920 conf.conf.keylen = WLAN_KEY_LEN_CCMP; 1921 break; 1922 case WLAN_CIPHER_SUITE_GCMP_256: 1923 conf.conf.keylen = WLAN_KEY_LEN_GCMP_256; 1924 break; 1925 case WLAN_CIPHER_SUITE_TKIP: 1926 conf.conf.keylen = WLAN_KEY_LEN_TKIP; 1927 break; 1928 } 1929 1930 key = ieee80211_gtk_rekey_add(vif, &conf.conf); 1931 if (IS_ERR(key)) 1932 return false; 1933 iwl_mvm_set_key_rx_seq(key, status, true); 1934 1935 replay_ctr = cpu_to_be64(status->replay_ctr); 1936 1937 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid, 1938 (void *)&replay_ctr, GFP_KERNEL); 1939 } 1940 1941 out: 1942 if (iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP, 1943 WOWLAN_GET_STATUSES, 0) < 10) { 1944 mvmvif->seqno_valid = true; 1945 /* +0x10 because the set API expects next-to-use, not last-used */ 1946 mvmvif->seqno = status->non_qos_seq_ctr + 0x10; 1947 } 1948 1949 return true; 1950 } 1951 1952 static void iwl_mvm_convert_gtk_v2(struct iwl_wowlan_status_data *status, 1953 struct iwl_wowlan_gtk_status_v2 *data) 1954 { 1955 BUILD_BUG_ON(sizeof(status->gtk.key) < sizeof(data->key)); 1956 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY + 1957 sizeof(data->tkip_mic_key) > 1958 sizeof(status->gtk.key)); 1959 1960 status->gtk.len = data->key_len; 1961 status->gtk.flags = data->key_flags; 1962 1963 memcpy(status->gtk.key, data->key, sizeof(data->key)); 1964 1965 /* if it's as long as the TKIP encryption key, copy MIC key */ 1966 if (status->gtk.len == NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY) 1967 memcpy(status->gtk.key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 1968 data->tkip_mic_key, sizeof(data->tkip_mic_key)); 1969 } 1970 1971 static void iwl_mvm_convert_gtk_v3(struct iwl_wowlan_status_data *status, 1972 struct iwl_wowlan_gtk_status_v3 *data) 1973 { 1974 /* The parts we need are identical in v2 and v3 */ 1975 #define CHECK(_f) do { \ 1976 BUILD_BUG_ON(offsetof(struct iwl_wowlan_gtk_status_v2, _f) != \ 1977 offsetof(struct iwl_wowlan_gtk_status_v3, _f)); \ 1978 BUILD_BUG_ON(offsetofend(struct iwl_wowlan_gtk_status_v2, _f) !=\ 1979 offsetofend(struct iwl_wowlan_gtk_status_v3, _f)); \ 1980 } while (0) 1981 1982 CHECK(key); 1983 CHECK(key_len); 1984 CHECK(key_flags); 1985 CHECK(tkip_mic_key); 1986 #undef CHECK 1987 1988 iwl_mvm_convert_gtk_v2(status, (void *)data); 1989 } 1990 1991 static void iwl_mvm_convert_igtk(struct iwl_wowlan_status_data *status, 1992 struct iwl_wowlan_igtk_status *data) 1993 { 1994 const u8 *ipn = data->ipn; 1995 1996 BUILD_BUG_ON(sizeof(status->igtk.key) < sizeof(data->key)); 1997 1998 status->igtk.len = data->key_len; 1999 status->igtk.flags = data->key_flags; 2000 2001 memcpy(status->igtk.key, data->key, sizeof(data->key)); 2002 2003 status->igtk.ipn = ((u64)ipn[5] << 0) | 2004 ((u64)ipn[4] << 8) | 2005 ((u64)ipn[3] << 16) | 2006 ((u64)ipn[2] << 24) | 2007 ((u64)ipn[1] << 32) | 2008 ((u64)ipn[0] << 40); 2009 } 2010 2011 static void iwl_mvm_parse_wowlan_info_notif(struct iwl_mvm *mvm, 2012 struct iwl_wowlan_info_notif *data, 2013 struct iwl_wowlan_status_data *status, 2014 u32 len) 2015 { 2016 u32 i; 2017 2018 if (len < sizeof(*data)) { 2019 IWL_ERR(mvm, "Invalid WoWLAN info notification!\n"); 2020 status = NULL; 2021 return; 2022 } 2023 2024 iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc); 2025 iwl_mvm_convert_gtk_v3(status, &data->gtk[0]); 2026 iwl_mvm_convert_igtk(status, &data->igtk[0]); 2027 2028 status->replay_ctr = le64_to_cpu(data->replay_ctr); 2029 status->pattern_number = le16_to_cpu(data->pattern_number); 2030 for (i = 0; i < IWL_MAX_TID_COUNT; i++) 2031 status->qos_seq_ctr[i] = 2032 le16_to_cpu(data->qos_seq_ctr[i]); 2033 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); 2034 status->num_of_gtk_rekeys = 2035 le32_to_cpu(data->num_of_gtk_rekeys); 2036 status->received_beacons = le32_to_cpu(data->received_beacons); 2037 status->tid_tear_down = data->tid_tear_down; 2038 } 2039 2040 /* Occasionally, templates would be nice. This is one of those times ... */ 2041 #define iwl_mvm_parse_wowlan_status_common(_ver) \ 2042 static struct iwl_wowlan_status_data * \ 2043 iwl_mvm_parse_wowlan_status_common_ ## _ver(struct iwl_mvm *mvm, \ 2044 struct iwl_wowlan_status_ ##_ver *data,\ 2045 int len) \ 2046 { \ 2047 struct iwl_wowlan_status_data *status; \ 2048 int data_size, i; \ 2049 \ 2050 if (len < sizeof(*data)) { \ 2051 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \ 2052 return NULL; \ 2053 } \ 2054 \ 2055 data_size = ALIGN(le32_to_cpu(data->wake_packet_bufsize), 4); \ 2056 if (len != sizeof(*data) + data_size) { \ 2057 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \ 2058 return NULL; \ 2059 } \ 2060 \ 2061 status = kzalloc(sizeof(*status), GFP_KERNEL); \ 2062 if (!status) \ 2063 return NULL; \ 2064 \ 2065 /* copy all the common fields */ \ 2066 status->replay_ctr = le64_to_cpu(data->replay_ctr); \ 2067 status->pattern_number = le16_to_cpu(data->pattern_number); \ 2068 status->non_qos_seq_ctr = le16_to_cpu(data->non_qos_seq_ctr); \ 2069 for (i = 0; i < 8; i++) \ 2070 status->qos_seq_ctr[i] = \ 2071 le16_to_cpu(data->qos_seq_ctr[i]); \ 2072 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); \ 2073 status->num_of_gtk_rekeys = \ 2074 le32_to_cpu(data->num_of_gtk_rekeys); \ 2075 status->received_beacons = le32_to_cpu(data->received_beacons); \ 2076 status->wake_packet_length = \ 2077 le32_to_cpu(data->wake_packet_length); \ 2078 status->wake_packet_bufsize = \ 2079 le32_to_cpu(data->wake_packet_bufsize); \ 2080 if (status->wake_packet_bufsize) { \ 2081 status->wake_packet = \ 2082 kmemdup(data->wake_packet, \ 2083 status->wake_packet_bufsize, \ 2084 GFP_KERNEL); \ 2085 if (!status->wake_packet) { \ 2086 kfree(status); \ 2087 return NULL; \ 2088 } \ 2089 } else { \ 2090 status->wake_packet = NULL; \ 2091 } \ 2092 \ 2093 return status; \ 2094 } 2095 2096 iwl_mvm_parse_wowlan_status_common(v6) 2097 iwl_mvm_parse_wowlan_status_common(v7) 2098 iwl_mvm_parse_wowlan_status_common(v9) 2099 iwl_mvm_parse_wowlan_status_common(v12) 2100 2101 static struct iwl_wowlan_status_data * 2102 iwl_mvm_send_wowlan_get_status(struct iwl_mvm *mvm, u8 sta_id) 2103 { 2104 struct iwl_wowlan_status_data *status; 2105 struct iwl_wowlan_get_status_cmd get_status_cmd = { 2106 .sta_id = cpu_to_le32(sta_id), 2107 }; 2108 struct iwl_host_cmd cmd = { 2109 .id = WOWLAN_GET_STATUSES, 2110 .flags = CMD_WANT_SKB, 2111 .data = { &get_status_cmd, }, 2112 .len = { sizeof(get_status_cmd), }, 2113 }; 2114 int ret, len; 2115 u8 notif_ver; 2116 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id, 2117 IWL_FW_CMD_VER_UNKNOWN); 2118 2119 if (cmd_ver == IWL_FW_CMD_VER_UNKNOWN) 2120 cmd.len[0] = 0; 2121 2122 lockdep_assert_held(&mvm->mutex); 2123 2124 ret = iwl_mvm_send_cmd(mvm, &cmd); 2125 if (ret) { 2126 IWL_ERR(mvm, "failed to query wakeup status (%d)\n", ret); 2127 return ERR_PTR(ret); 2128 } 2129 2130 len = iwl_rx_packet_payload_len(cmd.resp_pkt); 2131 2132 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */ 2133 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP, 2134 WOWLAN_GET_STATUSES, 0); 2135 if (!notif_ver) 2136 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, 2137 WOWLAN_GET_STATUSES, 7); 2138 2139 if (!fw_has_api(&mvm->fw->ucode_capa, 2140 IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL)) { 2141 struct iwl_wowlan_status_v6 *v6 = (void *)cmd.resp_pkt->data; 2142 2143 status = iwl_mvm_parse_wowlan_status_common_v6(mvm, v6, len); 2144 if (!status) 2145 goto out_free_resp; 2146 2147 BUILD_BUG_ON(sizeof(v6->gtk.decrypt_key) > 2148 sizeof(status->gtk.key)); 2149 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY + 2150 sizeof(v6->gtk.tkip_mic_key) > 2151 sizeof(status->gtk.key)); 2152 2153 /* copy GTK info to the right place */ 2154 memcpy(status->gtk.key, v6->gtk.decrypt_key, 2155 sizeof(v6->gtk.decrypt_key)); 2156 memcpy(status->gtk.key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 2157 v6->gtk.tkip_mic_key, 2158 sizeof(v6->gtk.tkip_mic_key)); 2159 2160 iwl_mvm_convert_key_counters(status, &v6->gtk.rsc.all_tsc_rsc); 2161 2162 /* hardcode the key length to 16 since v6 only supports 16 */ 2163 status->gtk.len = 16; 2164 2165 /* 2166 * The key index only uses 2 bits (values 0 to 3) and 2167 * we always set bit 7 which means this is the 2168 * currently used key. 2169 */ 2170 status->gtk.flags = v6->gtk.key_index | BIT(7); 2171 } else if (notif_ver == 7) { 2172 struct iwl_wowlan_status_v7 *v7 = (void *)cmd.resp_pkt->data; 2173 2174 status = iwl_mvm_parse_wowlan_status_common_v7(mvm, v7, len); 2175 if (!status) 2176 goto out_free_resp; 2177 2178 iwl_mvm_convert_key_counters(status, &v7->gtk[0].rsc.all_tsc_rsc); 2179 iwl_mvm_convert_gtk_v2(status, &v7->gtk[0]); 2180 iwl_mvm_convert_igtk(status, &v7->igtk[0]); 2181 } else if (notif_ver == 9 || notif_ver == 10 || notif_ver == 11) { 2182 struct iwl_wowlan_status_v9 *v9 = (void *)cmd.resp_pkt->data; 2183 2184 /* these three command versions have same layout and size, the 2185 * difference is only in a few not used (reserved) fields. 2186 */ 2187 status = iwl_mvm_parse_wowlan_status_common_v9(mvm, v9, len); 2188 if (!status) 2189 goto out_free_resp; 2190 2191 iwl_mvm_convert_key_counters(status, &v9->gtk[0].rsc.all_tsc_rsc); 2192 iwl_mvm_convert_gtk_v2(status, &v9->gtk[0]); 2193 iwl_mvm_convert_igtk(status, &v9->igtk[0]); 2194 2195 status->tid_tear_down = v9->tid_tear_down; 2196 } else if (notif_ver == 12) { 2197 struct iwl_wowlan_status_v12 *v12 = (void *)cmd.resp_pkt->data; 2198 2199 status = iwl_mvm_parse_wowlan_status_common_v12(mvm, v12, len); 2200 if (!status) 2201 goto out_free_resp; 2202 2203 iwl_mvm_convert_key_counters_v5(status, &v12->gtk[0].sc); 2204 iwl_mvm_convert_gtk_v3(status, &v12->gtk[0]); 2205 iwl_mvm_convert_igtk(status, &v12->igtk[0]); 2206 2207 status->tid_tear_down = v12->tid_tear_down; 2208 } else { 2209 IWL_ERR(mvm, 2210 "Firmware advertises unknown WoWLAN status response %d!\n", 2211 notif_ver); 2212 status = NULL; 2213 } 2214 2215 out_free_resp: 2216 iwl_free_resp(&cmd); 2217 return status; 2218 } 2219 2220 /* releases the MVM mutex */ 2221 static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm, 2222 struct ieee80211_vif *vif, 2223 struct iwl_wowlan_status_data *status) 2224 { 2225 int i; 2226 bool keep; 2227 struct iwl_mvm_sta *mvm_ap_sta; 2228 2229 if (!status) 2230 goto out_unlock; 2231 2232 IWL_DEBUG_WOWLAN(mvm, "wakeup reason 0x%x\n", 2233 status->wakeup_reasons); 2234 2235 /* still at hard-coded place 0 for D3 image */ 2236 mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, 0); 2237 if (!mvm_ap_sta) 2238 goto out_unlock; 2239 2240 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 2241 u16 seq = status->qos_seq_ctr[i]; 2242 /* firmware stores last-used value, we store next value */ 2243 seq += 0x10; 2244 mvm_ap_sta->tid_data[i].seq_number = seq; 2245 } 2246 2247 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000) { 2248 i = mvm->offload_tid; 2249 iwl_trans_set_q_ptrs(mvm->trans, 2250 mvm_ap_sta->tid_data[i].txq_id, 2251 mvm_ap_sta->tid_data[i].seq_number >> 4); 2252 } 2253 2254 /* now we have all the data we need, unlock to avoid mac80211 issues */ 2255 mutex_unlock(&mvm->mutex); 2256 2257 iwl_mvm_report_wakeup_reasons(mvm, vif, status); 2258 2259 keep = iwl_mvm_setup_connection_keep(mvm, vif, status); 2260 2261 return keep; 2262 2263 out_unlock: 2264 mutex_unlock(&mvm->mutex); 2265 return false; 2266 } 2267 2268 #define ND_QUERY_BUF_LEN (sizeof(struct iwl_scan_offload_profile_match) * \ 2269 IWL_SCAN_MAX_PROFILES) 2270 2271 struct iwl_mvm_nd_results { 2272 u32 matched_profiles; 2273 u8 matches[ND_QUERY_BUF_LEN]; 2274 }; 2275 2276 static int 2277 iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm, 2278 struct iwl_mvm_nd_results *results) 2279 { 2280 struct iwl_scan_offload_match_info *query; 2281 struct iwl_host_cmd cmd = { 2282 .id = SCAN_OFFLOAD_PROFILES_QUERY_CMD, 2283 .flags = CMD_WANT_SKB, 2284 }; 2285 int ret, len; 2286 size_t query_len, matches_len; 2287 int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw); 2288 2289 ret = iwl_mvm_send_cmd(mvm, &cmd); 2290 if (ret) { 2291 IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret); 2292 return ret; 2293 } 2294 2295 if (fw_has_api(&mvm->fw->ucode_capa, 2296 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2297 query_len = sizeof(struct iwl_scan_offload_match_info); 2298 matches_len = sizeof(struct iwl_scan_offload_profile_match) * 2299 max_profiles; 2300 } else { 2301 query_len = sizeof(struct iwl_scan_offload_profiles_query_v1); 2302 matches_len = sizeof(struct iwl_scan_offload_profile_match_v1) * 2303 max_profiles; 2304 } 2305 2306 len = iwl_rx_packet_payload_len(cmd.resp_pkt); 2307 if (len < query_len) { 2308 IWL_ERR(mvm, "Invalid scan offload profiles query response!\n"); 2309 ret = -EIO; 2310 goto out_free_resp; 2311 } 2312 2313 query = (void *)cmd.resp_pkt->data; 2314 2315 results->matched_profiles = le32_to_cpu(query->matched_profiles); 2316 memcpy(results->matches, query->matches, matches_len); 2317 2318 #ifdef CONFIG_IWLWIFI_DEBUGFS 2319 mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done); 2320 #endif 2321 2322 out_free_resp: 2323 iwl_free_resp(&cmd); 2324 return ret; 2325 } 2326 2327 static int iwl_mvm_query_num_match_chans(struct iwl_mvm *mvm, 2328 struct iwl_mvm_nd_results *results, 2329 int idx) 2330 { 2331 int n_chans = 0, i; 2332 2333 if (fw_has_api(&mvm->fw->ucode_capa, 2334 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2335 struct iwl_scan_offload_profile_match *matches = 2336 (void *)results->matches; 2337 2338 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; i++) 2339 n_chans += hweight8(matches[idx].matching_channels[i]); 2340 } else { 2341 struct iwl_scan_offload_profile_match_v1 *matches = 2342 (void *)results->matches; 2343 2344 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1; i++) 2345 n_chans += hweight8(matches[idx].matching_channels[i]); 2346 } 2347 2348 return n_chans; 2349 } 2350 2351 static void iwl_mvm_query_set_freqs(struct iwl_mvm *mvm, 2352 struct iwl_mvm_nd_results *results, 2353 struct cfg80211_wowlan_nd_match *match, 2354 int idx) 2355 { 2356 int i; 2357 2358 if (fw_has_api(&mvm->fw->ucode_capa, 2359 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2360 struct iwl_scan_offload_profile_match *matches = 2361 (void *)results->matches; 2362 2363 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; i++) 2364 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8))) 2365 match->channels[match->n_channels++] = 2366 mvm->nd_channels[i]->center_freq; 2367 } else { 2368 struct iwl_scan_offload_profile_match_v1 *matches = 2369 (void *)results->matches; 2370 2371 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1 * 8; i++) 2372 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8))) 2373 match->channels[match->n_channels++] = 2374 mvm->nd_channels[i]->center_freq; 2375 } 2376 } 2377 2378 /** 2379 * enum iwl_d3_notif - d3 notifications 2380 * @IWL_D3_NOTIF_WOWLAN_INFO: WOWLAN_INFO_NOTIF was received 2381 * @IWL_D3_NOTIF_WOWLAN_WAKE_PKT: WOWLAN_WAKE_PKT_NOTIF was received 2382 * @IWL_D3_NOTIF_PROT_OFFLOAD: PROT_OFFLOAD_NOTIF was received 2383 * @IWL_D3_ND_MATCH_INFO: OFFLOAD_MATCH_INFO_NOTIF was received 2384 * @IWL_D3_NOTIF_D3_END_NOTIF: D3_END_NOTIF was received 2385 */ 2386 enum iwl_d3_notif { 2387 IWL_D3_NOTIF_WOWLAN_INFO = BIT(0), 2388 IWL_D3_NOTIF_WOWLAN_WAKE_PKT = BIT(1), 2389 IWL_D3_NOTIF_PROT_OFFLOAD = BIT(2), 2390 IWL_D3_ND_MATCH_INFO = BIT(3), 2391 IWL_D3_NOTIF_D3_END_NOTIF = BIT(4) 2392 }; 2393 2394 /* manage d3 resume data */ 2395 struct iwl_d3_data { 2396 struct iwl_wowlan_status_data *status; 2397 bool test; 2398 u32 d3_end_flags; 2399 u32 notif_expected; /* bitmap - see &enum iwl_d3_notif */ 2400 u32 notif_received; /* bitmap - see &enum iwl_d3_notif */ 2401 struct iwl_mvm_nd_results *nd_results; 2402 bool nd_results_valid; 2403 }; 2404 2405 static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm, 2406 struct ieee80211_vif *vif, 2407 struct iwl_d3_data *d3_data) 2408 { 2409 struct cfg80211_wowlan_nd_info *net_detect = NULL; 2410 struct cfg80211_wowlan_wakeup wakeup = { 2411 .pattern_idx = -1, 2412 }; 2413 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; 2414 unsigned long matched_profiles; 2415 u32 reasons = 0; 2416 int i, n_matches, ret; 2417 2418 if (WARN_ON(!d3_data || !d3_data->status)) 2419 goto out; 2420 2421 reasons = d3_data->status->wakeup_reasons; 2422 2423 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 2424 wakeup.rfkill_release = true; 2425 2426 if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) 2427 goto out; 2428 2429 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2430 WOWLAN_INFO_NOTIFICATION, 0)) { 2431 IWL_INFO(mvm, "Query FW for ND results\n"); 2432 ret = iwl_mvm_netdetect_query_results(mvm, d3_data->nd_results); 2433 2434 } else { 2435 IWL_INFO(mvm, "Notification based ND results\n"); 2436 ret = d3_data->nd_results_valid ? 0 : -1; 2437 } 2438 2439 if (ret || !d3_data->nd_results->matched_profiles) { 2440 wakeup_report = NULL; 2441 goto out; 2442 } 2443 2444 matched_profiles = d3_data->nd_results->matched_profiles; 2445 if (mvm->n_nd_match_sets) { 2446 n_matches = hweight_long(matched_profiles); 2447 } else { 2448 IWL_ERR(mvm, "no net detect match information available\n"); 2449 n_matches = 0; 2450 } 2451 2452 net_detect = kzalloc(struct_size(net_detect, matches, n_matches), 2453 GFP_KERNEL); 2454 if (!net_detect || !n_matches) 2455 goto out_report_nd; 2456 2457 for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) { 2458 struct cfg80211_wowlan_nd_match *match; 2459 int idx, n_channels = 0; 2460 2461 n_channels = iwl_mvm_query_num_match_chans(mvm, 2462 d3_data->nd_results, 2463 i); 2464 2465 match = kzalloc(struct_size(match, channels, n_channels), 2466 GFP_KERNEL); 2467 if (!match) 2468 goto out_report_nd; 2469 2470 net_detect->matches[net_detect->n_matches++] = match; 2471 2472 /* We inverted the order of the SSIDs in the scan 2473 * request, so invert the index here. 2474 */ 2475 idx = mvm->n_nd_match_sets - i - 1; 2476 match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len; 2477 memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid, 2478 match->ssid.ssid_len); 2479 2480 if (mvm->n_nd_channels < n_channels) 2481 continue; 2482 2483 iwl_mvm_query_set_freqs(mvm, d3_data->nd_results, match, i); 2484 } 2485 2486 out_report_nd: 2487 wakeup.net_detect = net_detect; 2488 out: 2489 iwl_mvm_free_nd(mvm); 2490 2491 mutex_unlock(&mvm->mutex); 2492 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); 2493 2494 if (net_detect) { 2495 for (i = 0; i < net_detect->n_matches; i++) 2496 kfree(net_detect->matches[i]); 2497 kfree(net_detect); 2498 } 2499 } 2500 2501 static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac, 2502 struct ieee80211_vif *vif) 2503 { 2504 /* skip the one we keep connection on */ 2505 if (data == vif) 2506 return; 2507 2508 if (vif->type == NL80211_IFTYPE_STATION) 2509 ieee80211_resume_disconnect(vif); 2510 } 2511 2512 static bool iwl_mvm_rt_status(struct iwl_trans *trans, u32 base, u32 *err_id) 2513 { 2514 struct error_table_start { 2515 /* cf. struct iwl_error_event_table */ 2516 u32 valid; 2517 __le32 err_id; 2518 } err_info; 2519 2520 if (!base) 2521 return false; 2522 2523 iwl_trans_read_mem_bytes(trans, base, 2524 &err_info, sizeof(err_info)); 2525 if (err_info.valid && err_id) 2526 *err_id = le32_to_cpu(err_info.err_id); 2527 2528 return !!err_info.valid; 2529 } 2530 2531 static bool iwl_mvm_check_rt_status(struct iwl_mvm *mvm, 2532 struct ieee80211_vif *vif) 2533 { 2534 u32 err_id; 2535 2536 /* check for lmac1 error */ 2537 if (iwl_mvm_rt_status(mvm->trans, 2538 mvm->trans->dbg.lmac_error_event_table[0], 2539 &err_id)) { 2540 if (err_id == RF_KILL_INDICATOR_FOR_WOWLAN) { 2541 struct cfg80211_wowlan_wakeup wakeup = { 2542 .rfkill_release = true, 2543 }; 2544 ieee80211_report_wowlan_wakeup(vif, &wakeup, 2545 GFP_KERNEL); 2546 } 2547 return true; 2548 } 2549 2550 /* check if we have lmac2 set and check for error */ 2551 if (iwl_mvm_rt_status(mvm->trans, 2552 mvm->trans->dbg.lmac_error_event_table[1], NULL)) 2553 return true; 2554 2555 /* check for umac error */ 2556 if (iwl_mvm_rt_status(mvm->trans, 2557 mvm->trans->dbg.umac_error_event_table, NULL)) 2558 return true; 2559 2560 return false; 2561 } 2562 2563 /* 2564 * This function assumes: 2565 * 1. The mutex is already held. 2566 * 2. The callee functions unlock the mutex. 2567 */ 2568 static bool 2569 iwl_mvm_choose_query_wakeup_reasons(struct iwl_mvm *mvm, 2570 struct ieee80211_vif *vif, 2571 struct iwl_d3_data *d3_data) 2572 { 2573 lockdep_assert_held(&mvm->mutex); 2574 2575 /* if FW uses status notification, status shouldn't be NULL here */ 2576 if (!d3_data->status) { 2577 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2578 u8 sta_id = mvm->net_detect ? IWL_MVM_INVALID_STA : mvmvif->ap_sta_id; 2579 2580 d3_data->status = iwl_mvm_send_wowlan_get_status(mvm, sta_id); 2581 } 2582 2583 if (mvm->net_detect) { 2584 iwl_mvm_query_netdetect_reasons(mvm, vif, d3_data); 2585 } else { 2586 bool keep = iwl_mvm_query_wakeup_reasons(mvm, vif, 2587 d3_data->status); 2588 2589 #ifdef CONFIG_IWLWIFI_DEBUGFS 2590 if (keep) 2591 mvm->keep_vif = vif; 2592 #endif 2593 2594 return keep; 2595 } 2596 return false; 2597 } 2598 2599 #define IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT (IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET | \ 2600 IWL_WOWLAN_WAKEUP_BY_PATTERN | \ 2601 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN |\ 2602 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN_WILDCARD |\ 2603 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN |\ 2604 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN_WILDCARD) 2605 2606 static int iwl_mvm_wowlan_store_wake_pkt(struct iwl_mvm *mvm, 2607 struct iwl_wowlan_wake_pkt_notif *notif, 2608 struct iwl_wowlan_status_data *status, 2609 u32 len) 2610 { 2611 u32 data_size, packet_len = le32_to_cpu(notif->wake_packet_length); 2612 2613 if (len < sizeof(*notif)) { 2614 IWL_ERR(mvm, "Invalid WoWLAN wake packet notification!\n"); 2615 return -EIO; 2616 } 2617 2618 if (WARN_ON(!status)) { 2619 IWL_ERR(mvm, "Got wake packet notification but wowlan status data is NULL\n"); 2620 return -EIO; 2621 } 2622 2623 if (WARN_ON(!(status->wakeup_reasons & 2624 IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT))) { 2625 IWL_ERR(mvm, "Got wakeup packet but wakeup reason is %x\n", 2626 status->wakeup_reasons); 2627 return -EIO; 2628 } 2629 2630 data_size = len - offsetof(struct iwl_wowlan_wake_pkt_notif, wake_packet); 2631 2632 /* data_size got the padding from the notification, remove it. */ 2633 if (packet_len < data_size) 2634 data_size = packet_len; 2635 2636 status->wake_packet = kmemdup(notif->wake_packet, data_size, 2637 GFP_ATOMIC); 2638 2639 if (!status->wake_packet) 2640 return -ENOMEM; 2641 2642 status->wake_packet_length = packet_len; 2643 status->wake_packet_bufsize = data_size; 2644 2645 return 0; 2646 } 2647 2648 static void iwl_mvm_nd_match_info_handler(struct iwl_mvm *mvm, 2649 struct iwl_d3_data *d3_data, 2650 struct iwl_scan_offload_match_info *notif, 2651 u32 len) 2652 { 2653 struct iwl_wowlan_status_data *status = d3_data->status; 2654 struct ieee80211_vif *vif = iwl_mvm_get_bss_vif(mvm); 2655 struct iwl_mvm_nd_results *results = d3_data->nd_results; 2656 size_t i, matches_len = sizeof(struct iwl_scan_offload_profile_match) * 2657 iwl_umac_scan_get_max_profiles(mvm->fw); 2658 2659 if (IS_ERR_OR_NULL(vif)) 2660 return; 2661 2662 if (len < sizeof(struct iwl_scan_offload_match_info)) { 2663 IWL_ERR(mvm, "Invalid scan match info notification\n"); 2664 return; 2665 } 2666 2667 if (!mvm->net_detect) { 2668 IWL_ERR(mvm, "Unexpected scan match info notification\n"); 2669 return; 2670 } 2671 2672 if (!status || status->wakeup_reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) { 2673 IWL_ERR(mvm, 2674 "Ignore scan match info notification: no reason\n"); 2675 return; 2676 } 2677 2678 #ifdef CONFIG_IWLWIFI_DEBUGFS 2679 mvm->last_netdetect_scans = le32_to_cpu(notif->n_scans_done); 2680 #endif 2681 2682 results->matched_profiles = le32_to_cpu(notif->matched_profiles); 2683 IWL_INFO(mvm, "number of matched profiles=%u\n", 2684 results->matched_profiles); 2685 2686 if (results->matched_profiles) { 2687 memcpy(results->matches, notif->matches, matches_len); 2688 d3_data->nd_results_valid = TRUE; 2689 } 2690 2691 /* no scan should be active at this point */ 2692 mvm->scan_status = 0; 2693 for (i = 0; i < mvm->max_scans; i++) 2694 mvm->scan_uid_status[i] = 0; 2695 } 2696 2697 static bool iwl_mvm_wait_d3_notif(struct iwl_notif_wait_data *notif_wait, 2698 struct iwl_rx_packet *pkt, void *data) 2699 { 2700 struct iwl_mvm *mvm = 2701 container_of(notif_wait, struct iwl_mvm, notif_wait); 2702 struct iwl_d3_data *d3_data = data; 2703 u32 len; 2704 int ret; 2705 2706 switch (WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) { 2707 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION): { 2708 struct iwl_wowlan_info_notif *notif = (void *)pkt->data; 2709 2710 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_INFO) { 2711 /* We might get two notifications due to dual bss */ 2712 IWL_DEBUG_WOWLAN(mvm, 2713 "Got additional wowlan info notification\n"); 2714 break; 2715 } 2716 2717 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_INFO; 2718 len = iwl_rx_packet_payload_len(pkt); 2719 iwl_mvm_parse_wowlan_info_notif(mvm, notif, d3_data->status, 2720 len); 2721 if (d3_data->status && 2722 d3_data->status->wakeup_reasons & IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT) 2723 /* We are supposed to get also wake packet notif */ 2724 d3_data->notif_expected |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT; 2725 2726 break; 2727 } 2728 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION): { 2729 struct iwl_wowlan_wake_pkt_notif *notif = (void *)pkt->data; 2730 2731 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_WAKE_PKT) { 2732 /* We shouldn't get two wake packet notifications */ 2733 IWL_ERR(mvm, 2734 "Got additional wowlan wake packet notification\n"); 2735 } else { 2736 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT; 2737 len = iwl_rx_packet_payload_len(pkt); 2738 ret = iwl_mvm_wowlan_store_wake_pkt(mvm, notif, 2739 d3_data->status, 2740 len); 2741 if (ret) 2742 IWL_ERR(mvm, 2743 "Can't parse WOWLAN_WAKE_PKT_NOTIFICATION\n"); 2744 } 2745 2746 break; 2747 } 2748 case WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF): { 2749 struct iwl_scan_offload_match_info *notif = (void *)pkt->data; 2750 2751 if (d3_data->notif_received & IWL_D3_ND_MATCH_INFO) { 2752 IWL_ERR(mvm, 2753 "Got additional netdetect match info\n"); 2754 break; 2755 } 2756 2757 d3_data->notif_received |= IWL_D3_ND_MATCH_INFO; 2758 2759 /* explicitly set this in the 'expected' as well */ 2760 d3_data->notif_expected |= IWL_D3_ND_MATCH_INFO; 2761 2762 len = iwl_rx_packet_payload_len(pkt); 2763 iwl_mvm_nd_match_info_handler(mvm, d3_data, notif, len); 2764 break; 2765 } 2766 case WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION): { 2767 struct iwl_mvm_d3_end_notif *notif = (void *)pkt->data; 2768 2769 d3_data->d3_end_flags = __le32_to_cpu(notif->flags); 2770 d3_data->notif_received |= IWL_D3_NOTIF_D3_END_NOTIF; 2771 2772 break; 2773 } 2774 default: 2775 WARN_ON(1); 2776 } 2777 2778 return d3_data->notif_received == d3_data->notif_expected; 2779 } 2780 2781 static int iwl_mvm_resume_firmware(struct iwl_mvm *mvm, bool test) 2782 { 2783 int ret; 2784 enum iwl_d3_status d3_status; 2785 struct iwl_host_cmd cmd = { 2786 .id = D0I3_END_CMD, 2787 .flags = CMD_WANT_SKB | CMD_SEND_IN_D3, 2788 }; 2789 bool reset = fw_has_capa(&mvm->fw->ucode_capa, 2790 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 2791 2792 ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, !reset); 2793 if (ret) 2794 return ret; 2795 2796 if (d3_status != IWL_D3_STATUS_ALIVE) { 2797 IWL_INFO(mvm, "Device was reset during suspend\n"); 2798 return -ENOENT; 2799 } 2800 2801 /* 2802 * We should trigger resume flow using command only for 22000 family 2803 * AX210 and above don't need the command since they have 2804 * the doorbell interrupt. 2805 */ 2806 if (mvm->trans->trans_cfg->device_family <= IWL_DEVICE_FAMILY_22000 && 2807 fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_D0I3_END_FIRST)) { 2808 ret = iwl_mvm_send_cmd(mvm, &cmd); 2809 if (ret < 0) 2810 IWL_ERR(mvm, "Failed to send D0I3_END_CMD first (%d)\n", 2811 ret); 2812 } 2813 2814 return ret; 2815 } 2816 2817 #define IWL_MVM_D3_NOTIF_TIMEOUT (HZ / 5) 2818 2819 static int iwl_mvm_d3_notif_wait(struct iwl_mvm *mvm, 2820 struct iwl_d3_data *d3_data) 2821 { 2822 static const u16 d3_resume_notif[] = { 2823 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION), 2824 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION), 2825 WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF), 2826 WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION) 2827 }; 2828 struct iwl_notification_wait wait_d3_notif; 2829 int ret; 2830 2831 iwl_init_notification_wait(&mvm->notif_wait, &wait_d3_notif, 2832 d3_resume_notif, ARRAY_SIZE(d3_resume_notif), 2833 iwl_mvm_wait_d3_notif, d3_data); 2834 2835 ret = iwl_mvm_resume_firmware(mvm, d3_data->test); 2836 if (ret) { 2837 iwl_remove_notification(&mvm->notif_wait, &wait_d3_notif); 2838 return ret; 2839 } 2840 2841 return iwl_wait_notification(&mvm->notif_wait, &wait_d3_notif, 2842 IWL_MVM_D3_NOTIF_TIMEOUT); 2843 } 2844 2845 static inline bool iwl_mvm_d3_resume_notif_based(struct iwl_mvm *mvm) 2846 { 2847 return iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2848 WOWLAN_INFO_NOTIFICATION, 0) && 2849 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2850 WOWLAN_WAKE_PKT_NOTIFICATION, 0) && 2851 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2852 D3_END_NOTIFICATION, 0); 2853 } 2854 2855 static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test) 2856 { 2857 struct ieee80211_vif *vif = NULL; 2858 int ret = 1; 2859 struct iwl_mvm_nd_results results = {}; 2860 struct iwl_d3_data d3_data = { 2861 .test = test, 2862 .notif_expected = 2863 IWL_D3_NOTIF_WOWLAN_INFO | 2864 IWL_D3_NOTIF_D3_END_NOTIF, 2865 .nd_results_valid = false, 2866 .nd_results = &results, 2867 }; 2868 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 2869 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 2870 bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa, 2871 IWL_UCODE_TLV_CAPA_D0I3_END_FIRST); 2872 bool resume_notif_based = iwl_mvm_d3_resume_notif_based(mvm); 2873 bool keep = false; 2874 2875 mutex_lock(&mvm->mutex); 2876 2877 mvm->last_reset_or_resume_time_jiffies = jiffies; 2878 2879 /* get the BSS vif pointer again */ 2880 vif = iwl_mvm_get_bss_vif(mvm); 2881 if (IS_ERR_OR_NULL(vif)) 2882 goto err; 2883 2884 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt); 2885 2886 if (iwl_mvm_check_rt_status(mvm, vif)) { 2887 set_bit(STATUS_FW_ERROR, &mvm->trans->status); 2888 iwl_mvm_dump_nic_error_log(mvm); 2889 iwl_dbg_tlv_time_point(&mvm->fwrt, 2890 IWL_FW_INI_TIME_POINT_FW_ASSERT, NULL); 2891 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert, 2892 false, 0); 2893 ret = 1; 2894 goto err; 2895 } 2896 2897 if (resume_notif_based) { 2898 d3_data.status = kzalloc(sizeof(*d3_data.status), GFP_KERNEL); 2899 if (!d3_data.status) { 2900 IWL_ERR(mvm, "Failed to allocate wowlan status\n"); 2901 ret = -ENOMEM; 2902 goto err; 2903 } 2904 2905 ret = iwl_mvm_d3_notif_wait(mvm, &d3_data); 2906 if (ret) 2907 goto err; 2908 } else { 2909 ret = iwl_mvm_resume_firmware(mvm, test); 2910 if (ret < 0) 2911 goto err; 2912 } 2913 2914 /* after the successful handshake, we're out of D3 */ 2915 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED; 2916 2917 /* when reset is required we can't send these following commands */ 2918 if (d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE) 2919 goto query_wakeup_reasons; 2920 2921 /* 2922 * Query the current location and source from the D3 firmware so we 2923 * can play it back when we re-intiailize the D0 firmware 2924 */ 2925 iwl_mvm_update_changed_regdom(mvm); 2926 2927 /* Re-configure PPAG settings */ 2928 iwl_mvm_ppag_send_cmd(mvm); 2929 2930 if (!unified_image) 2931 /* Re-configure default SAR profile */ 2932 iwl_mvm_sar_select_profile(mvm, 1, 1); 2933 2934 if (mvm->net_detect && unified_image) { 2935 /* If this is a non-unified image, we restart the FW, 2936 * so no need to stop the netdetect scan. If that 2937 * fails, continue and try to get the wake-up reasons, 2938 * but trigger a HW restart by keeping a failure code 2939 * in ret. 2940 */ 2941 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT, 2942 false); 2943 } 2944 2945 query_wakeup_reasons: 2946 keep = iwl_mvm_choose_query_wakeup_reasons(mvm, vif, &d3_data); 2947 /* has unlocked the mutex, so skip that */ 2948 goto out; 2949 2950 err: 2951 mutex_unlock(&mvm->mutex); 2952 out: 2953 if (d3_data.status) 2954 kfree(d3_data.status->wake_packet); 2955 kfree(d3_data.status); 2956 iwl_mvm_free_nd(mvm); 2957 2958 if (!d3_data.test && !mvm->net_detect) 2959 ieee80211_iterate_active_interfaces_mtx(mvm->hw, 2960 IEEE80211_IFACE_ITER_NORMAL, 2961 iwl_mvm_d3_disconnect_iter, 2962 keep ? vif : NULL); 2963 2964 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 2965 2966 /* no need to reset the device in unified images, if successful */ 2967 if (unified_image && !ret) { 2968 /* nothing else to do if we already sent D0I3_END_CMD */ 2969 if (d0i3_first) 2970 return 0; 2971 2972 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2973 D3_END_NOTIFICATION, 0)) { 2974 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL); 2975 if (!ret) 2976 return 0; 2977 } else if (!(d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)) { 2978 return 0; 2979 } 2980 } 2981 2982 /* 2983 * Reconfigure the device in one of the following cases: 2984 * 1. We are not using a unified image 2985 * 2. We are using a unified image but had an error while exiting D3 2986 */ 2987 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); 2988 2989 /* regardless of what happened, we're now out of D3 */ 2990 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED; 2991 2992 return 1; 2993 } 2994 2995 int iwl_mvm_resume(struct ieee80211_hw *hw) 2996 { 2997 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2998 int ret; 2999 3000 ret = __iwl_mvm_resume(mvm, false); 3001 3002 iwl_mvm_resume_tcm(mvm); 3003 3004 iwl_fw_runtime_resume(&mvm->fwrt); 3005 3006 return ret; 3007 } 3008 3009 void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled) 3010 { 3011 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3012 3013 device_set_wakeup_enable(mvm->trans->dev, enabled); 3014 } 3015 3016 #ifdef CONFIG_IWLWIFI_DEBUGFS 3017 static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file) 3018 { 3019 struct iwl_mvm *mvm = inode->i_private; 3020 int err; 3021 3022 if (mvm->d3_test_active) 3023 return -EBUSY; 3024 3025 file->private_data = inode->i_private; 3026 3027 iwl_mvm_pause_tcm(mvm, true); 3028 3029 iwl_fw_runtime_suspend(&mvm->fwrt); 3030 3031 /* start pseudo D3 */ 3032 rtnl_lock(); 3033 wiphy_lock(mvm->hw->wiphy); 3034 err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true); 3035 wiphy_unlock(mvm->hw->wiphy); 3036 rtnl_unlock(); 3037 if (err > 0) 3038 err = -EINVAL; 3039 if (err) 3040 return err; 3041 3042 mvm->d3_test_active = true; 3043 mvm->keep_vif = NULL; 3044 return 0; 3045 } 3046 3047 static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf, 3048 size_t count, loff_t *ppos) 3049 { 3050 struct iwl_mvm *mvm = file->private_data; 3051 u32 pme_asserted; 3052 3053 while (true) { 3054 /* read pme_ptr if available */ 3055 if (mvm->d3_test_pme_ptr) { 3056 pme_asserted = iwl_trans_read_mem32(mvm->trans, 3057 mvm->d3_test_pme_ptr); 3058 if (pme_asserted) 3059 break; 3060 } 3061 3062 if (msleep_interruptible(100)) 3063 break; 3064 } 3065 3066 return 0; 3067 } 3068 3069 static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac, 3070 struct ieee80211_vif *vif) 3071 { 3072 /* skip the one we keep connection on */ 3073 if (_data == vif) 3074 return; 3075 3076 if (vif->type == NL80211_IFTYPE_STATION) 3077 ieee80211_connection_loss(vif); 3078 } 3079 3080 static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file) 3081 { 3082 struct iwl_mvm *mvm = inode->i_private; 3083 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 3084 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 3085 3086 mvm->d3_test_active = false; 3087 3088 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt); 3089 3090 rtnl_lock(); 3091 wiphy_lock(mvm->hw->wiphy); 3092 __iwl_mvm_resume(mvm, true); 3093 wiphy_unlock(mvm->hw->wiphy); 3094 rtnl_unlock(); 3095 3096 iwl_mvm_resume_tcm(mvm); 3097 3098 iwl_fw_runtime_resume(&mvm->fwrt); 3099 3100 iwl_abort_notification_waits(&mvm->notif_wait); 3101 if (!unified_image) { 3102 int remaining_time = 10; 3103 3104 ieee80211_restart_hw(mvm->hw); 3105 3106 /* wait for restart and disconnect all interfaces */ 3107 while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 3108 remaining_time > 0) { 3109 remaining_time--; 3110 msleep(1000); 3111 } 3112 3113 if (remaining_time == 0) 3114 IWL_ERR(mvm, "Timed out waiting for HW restart!\n"); 3115 } 3116 3117 ieee80211_iterate_active_interfaces_atomic( 3118 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 3119 iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif); 3120 3121 return 0; 3122 } 3123 3124 const struct file_operations iwl_dbgfs_d3_test_ops = { 3125 .llseek = no_llseek, 3126 .open = iwl_mvm_d3_test_open, 3127 .read = iwl_mvm_d3_test_read, 3128 .release = iwl_mvm_d3_test_release, 3129 }; 3130 #endif 3131