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->deflink.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 = 497 cpu_to_le32(mvmvif->deflink.ap_sta_id); 498 } else { 499 /* ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN */ 500 size = sizeof(data.rsc_tsc->params); 501 } 502 503 ieee80211_iter_keys(mvm->hw, vif, 504 iwl_mvm_wowlan_get_rsc_tsc_data, 505 &data); 506 507 if (data.have_rsc_tsc) 508 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM, 509 CMD_ASYNC, size, 510 data.rsc_tsc); 511 else 512 ret = 0; 513 kfree(data.rsc_tsc); 514 } else { 515 ret = 0; 516 WARN_ON_ONCE(1); 517 } 518 519 return ret; 520 } 521 522 struct wowlan_key_tkip_data { 523 struct iwl_wowlan_tkip_params_cmd tkip; 524 bool have_tkip_keys; 525 }; 526 527 static void iwl_mvm_wowlan_get_tkip_data(struct ieee80211_hw *hw, 528 struct ieee80211_vif *vif, 529 struct ieee80211_sta *sta, 530 struct ieee80211_key_conf *key, 531 void *_data) 532 { 533 struct wowlan_key_tkip_data *data = _data; 534 struct iwl_p1k_cache *rx_p1ks; 535 u8 *rx_mic_key; 536 struct ieee80211_key_seq seq; 537 u32 cur_rx_iv32 = 0; 538 u16 p1k[IWL_P1K_SIZE]; 539 int i; 540 541 switch (key->cipher) { 542 default: 543 break; 544 case WLAN_CIPHER_SUITE_TKIP: 545 if (sta) { 546 u64 pn64; 547 548 rx_p1ks = data->tkip.rx_uni; 549 550 pn64 = atomic64_read(&key->tx_pn); 551 552 ieee80211_get_tkip_p1k_iv(key, TKIP_PN_TO_IV32(pn64), 553 p1k); 554 iwl_mvm_convert_p1k(p1k, data->tkip.tx.p1k); 555 556 memcpy(data->tkip.mic_keys.tx, 557 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], 558 IWL_MIC_KEY_SIZE); 559 560 rx_mic_key = data->tkip.mic_keys.rx_unicast; 561 } else { 562 rx_p1ks = data->tkip.rx_multi; 563 rx_mic_key = data->tkip.mic_keys.rx_mcast; 564 } 565 566 for (i = 0; i < IWL_NUM_RSC; i++) { 567 ieee80211_get_key_rx_seq(key, i, &seq); 568 /* wrapping isn't allowed, AP must rekey */ 569 if (seq.tkip.iv32 > cur_rx_iv32) 570 cur_rx_iv32 = seq.tkip.iv32; 571 } 572 573 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid, 574 cur_rx_iv32, p1k); 575 iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k); 576 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid, 577 cur_rx_iv32 + 1, p1k); 578 iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k); 579 580 memcpy(rx_mic_key, 581 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], 582 IWL_MIC_KEY_SIZE); 583 584 data->have_tkip_keys = true; 585 break; 586 } 587 } 588 589 struct wowlan_key_gtk_type_iter { 590 struct iwl_wowlan_kek_kck_material_cmd_v4 *kek_kck_cmd; 591 }; 592 593 static void iwl_mvm_wowlan_gtk_type_iter(struct ieee80211_hw *hw, 594 struct ieee80211_vif *vif, 595 struct ieee80211_sta *sta, 596 struct ieee80211_key_conf *key, 597 void *_data) 598 { 599 struct wowlan_key_gtk_type_iter *data = _data; 600 601 switch (key->cipher) { 602 default: 603 return; 604 case WLAN_CIPHER_SUITE_TKIP: 605 if (!sta) 606 data->kek_kck_cmd->gtk_cipher = 607 cpu_to_le32(STA_KEY_FLG_TKIP); 608 return; 609 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 610 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 611 data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_GCMP); 612 return; 613 case WLAN_CIPHER_SUITE_AES_CMAC: 614 data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_CCM); 615 return; 616 case WLAN_CIPHER_SUITE_CCMP: 617 if (!sta) 618 data->kek_kck_cmd->gtk_cipher = 619 cpu_to_le32(STA_KEY_FLG_CCM); 620 return; 621 case WLAN_CIPHER_SUITE_GCMP: 622 case WLAN_CIPHER_SUITE_GCMP_256: 623 if (!sta) 624 data->kek_kck_cmd->gtk_cipher = 625 cpu_to_le32(STA_KEY_FLG_GCMP); 626 return; 627 } 628 } 629 630 static int iwl_mvm_send_patterns_v1(struct iwl_mvm *mvm, 631 struct cfg80211_wowlan *wowlan) 632 { 633 struct iwl_wowlan_patterns_cmd_v1 *pattern_cmd; 634 struct iwl_host_cmd cmd = { 635 .id = WOWLAN_PATTERNS, 636 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 637 }; 638 int i, err; 639 640 if (!wowlan->n_patterns) 641 return 0; 642 643 cmd.len[0] = struct_size(pattern_cmd, patterns, wowlan->n_patterns); 644 645 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL); 646 if (!pattern_cmd) 647 return -ENOMEM; 648 649 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns); 650 651 for (i = 0; i < wowlan->n_patterns; i++) { 652 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8); 653 654 memcpy(&pattern_cmd->patterns[i].mask, 655 wowlan->patterns[i].mask, mask_len); 656 memcpy(&pattern_cmd->patterns[i].pattern, 657 wowlan->patterns[i].pattern, 658 wowlan->patterns[i].pattern_len); 659 pattern_cmd->patterns[i].mask_size = mask_len; 660 pattern_cmd->patterns[i].pattern_size = 661 wowlan->patterns[i].pattern_len; 662 } 663 664 cmd.data[0] = pattern_cmd; 665 err = iwl_mvm_send_cmd(mvm, &cmd); 666 kfree(pattern_cmd); 667 return err; 668 } 669 670 static int iwl_mvm_send_patterns(struct iwl_mvm *mvm, 671 struct ieee80211_vif *vif, 672 struct cfg80211_wowlan *wowlan) 673 { 674 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 675 struct iwl_wowlan_patterns_cmd *pattern_cmd; 676 struct iwl_host_cmd cmd = { 677 .id = WOWLAN_PATTERNS, 678 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 679 }; 680 int i, err; 681 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id, 682 IWL_FW_CMD_VER_UNKNOWN); 683 684 if (!wowlan->n_patterns) 685 return 0; 686 687 cmd.len[0] = sizeof(*pattern_cmd) + 688 wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern_v2); 689 690 pattern_cmd = kzalloc(cmd.len[0], GFP_KERNEL); 691 if (!pattern_cmd) 692 return -ENOMEM; 693 694 pattern_cmd->n_patterns = wowlan->n_patterns; 695 if (ver >= 3) 696 pattern_cmd->sta_id = mvmvif->deflink.ap_sta_id; 697 698 for (i = 0; i < wowlan->n_patterns; i++) { 699 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8); 700 701 pattern_cmd->patterns[i].pattern_type = 702 WOWLAN_PATTERN_TYPE_BITMASK; 703 704 memcpy(&pattern_cmd->patterns[i].u.bitmask.mask, 705 wowlan->patterns[i].mask, mask_len); 706 memcpy(&pattern_cmd->patterns[i].u.bitmask.pattern, 707 wowlan->patterns[i].pattern, 708 wowlan->patterns[i].pattern_len); 709 pattern_cmd->patterns[i].u.bitmask.mask_size = mask_len; 710 pattern_cmd->patterns[i].u.bitmask.pattern_size = 711 wowlan->patterns[i].pattern_len; 712 } 713 714 cmd.data[0] = pattern_cmd; 715 err = iwl_mvm_send_cmd(mvm, &cmd); 716 kfree(pattern_cmd); 717 return err; 718 } 719 720 static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 721 struct ieee80211_sta *ap_sta) 722 { 723 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 724 struct ieee80211_chanctx_conf *ctx; 725 u8 chains_static, chains_dynamic; 726 struct cfg80211_chan_def chandef; 727 int ret, i; 728 struct iwl_binding_cmd_v1 binding_cmd = {}; 729 struct iwl_time_quota_cmd quota_cmd = {}; 730 struct iwl_time_quota_data *quota; 731 u32 status; 732 733 if (WARN_ON_ONCE(iwl_mvm_is_cdb_supported(mvm))) 734 return -EINVAL; 735 736 /* add back the PHY */ 737 if (WARN_ON(!mvmvif->deflink.phy_ctxt)) 738 return -EINVAL; 739 740 rcu_read_lock(); 741 ctx = rcu_dereference(vif->bss_conf.chanctx_conf); 742 if (WARN_ON(!ctx)) { 743 rcu_read_unlock(); 744 return -EINVAL; 745 } 746 chandef = ctx->def; 747 chains_static = ctx->rx_chains_static; 748 chains_dynamic = ctx->rx_chains_dynamic; 749 rcu_read_unlock(); 750 751 ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->deflink.phy_ctxt, &chandef, 752 chains_static, chains_dynamic); 753 if (ret) 754 return ret; 755 756 /* add back the MAC */ 757 mvmvif->uploaded = false; 758 759 if (WARN_ON(!vif->cfg.assoc)) 760 return -EINVAL; 761 762 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 763 if (ret) 764 return ret; 765 766 /* add back binding - XXX refactor? */ 767 binding_cmd.id_and_color = 768 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id, 769 mvmvif->deflink.phy_ctxt->color)); 770 binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD); 771 binding_cmd.phy = 772 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id, 773 mvmvif->deflink.phy_ctxt->color)); 774 binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 775 mvmvif->color)); 776 for (i = 1; i < MAX_MACS_IN_BINDING; i++) 777 binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID); 778 779 status = 0; 780 ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD, 781 IWL_BINDING_CMD_SIZE_V1, &binding_cmd, 782 &status); 783 if (ret) { 784 IWL_ERR(mvm, "Failed to add binding: %d\n", ret); 785 return ret; 786 } 787 788 if (status) { 789 IWL_ERR(mvm, "Binding command failed: %u\n", status); 790 return -EIO; 791 } 792 793 ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false, 0); 794 if (ret) 795 return ret; 796 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->deflink.ap_sta_id], 797 ap_sta); 798 799 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 800 if (ret) 801 return ret; 802 803 /* and some quota */ 804 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, 0); 805 quota->id_and_color = 806 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id, 807 mvmvif->deflink.phy_ctxt->color)); 808 quota->quota = cpu_to_le32(IWL_MVM_MAX_QUOTA); 809 quota->max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA); 810 811 for (i = 1; i < MAX_BINDINGS; i++) { 812 quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, i); 813 quota->id_and_color = cpu_to_le32(FW_CTXT_INVALID); 814 } 815 816 ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0, 817 iwl_mvm_quota_cmd_size(mvm), "a_cmd); 818 if (ret) 819 IWL_ERR(mvm, "Failed to send quota: %d\n", ret); 820 821 if (iwl_mvm_is_lar_supported(mvm) && iwl_mvm_init_fw_regd(mvm)) 822 IWL_ERR(mvm, "Failed to initialize D3 LAR information\n"); 823 824 return 0; 825 } 826 827 static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm, 828 struct ieee80211_vif *vif) 829 { 830 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 831 struct iwl_nonqos_seq_query_cmd query_cmd = { 832 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET), 833 .mac_id_n_color = 834 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 835 mvmvif->color)), 836 }; 837 struct iwl_host_cmd cmd = { 838 .id = NON_QOS_TX_COUNTER_CMD, 839 .flags = CMD_WANT_SKB, 840 }; 841 int err; 842 u32 size; 843 844 cmd.data[0] = &query_cmd; 845 cmd.len[0] = sizeof(query_cmd); 846 847 err = iwl_mvm_send_cmd(mvm, &cmd); 848 if (err) 849 return err; 850 851 size = iwl_rx_packet_payload_len(cmd.resp_pkt); 852 if (size < sizeof(__le16)) { 853 err = -EINVAL; 854 } else { 855 err = le16_to_cpup((__le16 *)cmd.resp_pkt->data); 856 /* firmware returns next, not last-used seqno */ 857 err = (u16) (err - 0x10); 858 } 859 860 iwl_free_resp(&cmd); 861 return err; 862 } 863 864 void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 865 { 866 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 867 struct iwl_nonqos_seq_query_cmd query_cmd = { 868 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET), 869 .mac_id_n_color = 870 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 871 mvmvif->color)), 872 .value = cpu_to_le16(mvmvif->seqno), 873 }; 874 875 /* return if called during restart, not resume from D3 */ 876 if (!mvmvif->seqno_valid) 877 return; 878 879 mvmvif->seqno_valid = false; 880 881 if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0, 882 sizeof(query_cmd), &query_cmd)) 883 IWL_ERR(mvm, "failed to set non-QoS seqno\n"); 884 } 885 886 static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm) 887 { 888 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 889 890 iwl_mvm_stop_device(mvm); 891 /* 892 * Set the HW restart bit -- this is mostly true as we're 893 * going to load new firmware and reprogram that, though 894 * the reprogramming is going to be manual to avoid adding 895 * all the MACs that aren't support. 896 * We don't have to clear up everything though because the 897 * reprogramming is manual. When we resume, we'll actually 898 * go through a proper restart sequence again to switch 899 * back to the runtime firmware image. 900 */ 901 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 902 903 /* the fw is reset, so all the keys are cleared */ 904 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); 905 906 mvm->ptk_ivlen = 0; 907 mvm->ptk_icvlen = 0; 908 mvm->ptk_ivlen = 0; 909 mvm->ptk_icvlen = 0; 910 911 return iwl_mvm_load_d3_fw(mvm); 912 } 913 914 static int 915 iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm, 916 struct cfg80211_wowlan *wowlan, 917 struct iwl_wowlan_config_cmd *wowlan_config_cmd, 918 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif, 919 struct ieee80211_sta *ap_sta) 920 { 921 struct iwl_mvm_sta *mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta); 922 923 /* TODO: wowlan_config_cmd->wowlan_ba_teardown_tids */ 924 925 wowlan_config_cmd->is_11n_connection = 926 ap_sta->deflink.ht_cap.ht_supported; 927 wowlan_config_cmd->flags = ENABLE_L3_FILTERING | 928 ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING; 929 930 if (iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_CONFIGURATION, 0) < 6) { 931 /* Query the last used seqno and set it */ 932 int ret = iwl_mvm_get_last_nonqos_seq(mvm, vif); 933 934 if (ret < 0) 935 return ret; 936 937 wowlan_config_cmd->non_qos_seq = cpu_to_le16(ret); 938 } 939 940 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, wowlan_config_cmd); 941 942 if (wowlan->disconnect) 943 wowlan_config_cmd->wakeup_filter |= 944 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS | 945 IWL_WOWLAN_WAKEUP_LINK_CHANGE); 946 if (wowlan->magic_pkt) 947 wowlan_config_cmd->wakeup_filter |= 948 cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET); 949 if (wowlan->gtk_rekey_failure) 950 wowlan_config_cmd->wakeup_filter |= 951 cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL); 952 if (wowlan->eap_identity_req) 953 wowlan_config_cmd->wakeup_filter |= 954 cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ); 955 if (wowlan->four_way_handshake) 956 wowlan_config_cmd->wakeup_filter |= 957 cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE); 958 if (wowlan->n_patterns) 959 wowlan_config_cmd->wakeup_filter |= 960 cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH); 961 962 if (wowlan->rfkill_release) 963 wowlan_config_cmd->wakeup_filter |= 964 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT); 965 966 if (wowlan->tcp) { 967 /* 968 * Set the "link change" (really "link lost") flag as well 969 * since that implies losing the TCP connection. 970 */ 971 wowlan_config_cmd->wakeup_filter |= 972 cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS | 973 IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE | 974 IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET | 975 IWL_WOWLAN_WAKEUP_LINK_CHANGE); 976 } 977 978 if (wowlan->any) { 979 wowlan_config_cmd->wakeup_filter |= 980 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS | 981 IWL_WOWLAN_WAKEUP_LINK_CHANGE | 982 IWL_WOWLAN_WAKEUP_RX_FRAME | 983 IWL_WOWLAN_WAKEUP_BCN_FILTERING); 984 } 985 986 return 0; 987 } 988 989 static int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm, 990 struct ieee80211_vif *vif) 991 { 992 bool unified = fw_has_capa(&mvm->fw->ucode_capa, 993 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 994 struct wowlan_key_reprogram_data key_data = {}; 995 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 996 int ret; 997 u8 cmd_ver; 998 size_t cmd_size; 999 1000 if (!unified) { 1001 /* 1002 * if we have to configure keys, call ieee80211_iter_keys(), 1003 * as we need non-atomic context in order to take the 1004 * required locks. 1005 */ 1006 /* 1007 * Note that currently we don't use CMD_ASYNC in the iterator. 1008 * In case of key_data.configure_keys, all the configured 1009 * commands are SYNC, and iwl_mvm_wowlan_program_keys() will 1010 * take care of locking/unlocking mvm->mutex. 1011 */ 1012 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_program_keys, 1013 &key_data); 1014 1015 if (key_data.error) 1016 return -EIO; 1017 } 1018 1019 ret = iwl_mvm_wowlan_config_rsc_tsc(mvm, vif); 1020 if (ret) 1021 return ret; 1022 1023 if (!fw_has_api(&mvm->fw->ucode_capa, 1024 IWL_UCODE_TLV_API_TKIP_MIC_KEYS)) { 1025 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TKIP_PARAM, 1026 IWL_FW_CMD_VER_UNKNOWN); 1027 struct wowlan_key_tkip_data tkip_data = {}; 1028 int size; 1029 1030 if (ver == 2) { 1031 size = sizeof(tkip_data.tkip); 1032 tkip_data.tkip.sta_id = 1033 cpu_to_le32(mvmvif->deflink.ap_sta_id); 1034 } else if (ver == 1 || ver == IWL_FW_CMD_VER_UNKNOWN) { 1035 size = sizeof(struct iwl_wowlan_tkip_params_cmd_ver_1); 1036 } else { 1037 WARN_ON_ONCE(1); 1038 return -EINVAL; 1039 } 1040 1041 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_get_tkip_data, 1042 &tkip_data); 1043 1044 if (tkip_data.have_tkip_keys) { 1045 /* send relevant data according to CMD version */ 1046 ret = iwl_mvm_send_cmd_pdu(mvm, 1047 WOWLAN_TKIP_PARAM, 1048 CMD_ASYNC, size, 1049 &tkip_data.tkip); 1050 if (ret) 1051 return ret; 1052 } 1053 } 1054 1055 /* configure rekey data only if offloaded rekey is supported (d3) */ 1056 if (mvmvif->rekey_data.valid) { 1057 struct iwl_wowlan_kek_kck_material_cmd_v4 kek_kck_cmd = {}; 1058 struct iwl_wowlan_kek_kck_material_cmd_v4 *_kek_kck_cmd = 1059 &kek_kck_cmd; 1060 struct wowlan_key_gtk_type_iter gtk_type_data = { 1061 .kek_kck_cmd = _kek_kck_cmd, 1062 }; 1063 1064 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, 1065 WOWLAN_KEK_KCK_MATERIAL, 1066 IWL_FW_CMD_VER_UNKNOWN); 1067 if (WARN_ON(cmd_ver != 2 && cmd_ver != 3 && cmd_ver != 4 && 1068 cmd_ver != IWL_FW_CMD_VER_UNKNOWN)) 1069 return -EINVAL; 1070 1071 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_gtk_type_iter, 1072 >k_type_data); 1073 1074 memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck, 1075 mvmvif->rekey_data.kck_len); 1076 kek_kck_cmd.kck_len = cpu_to_le16(mvmvif->rekey_data.kck_len); 1077 memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek, 1078 mvmvif->rekey_data.kek_len); 1079 kek_kck_cmd.kek_len = cpu_to_le16(mvmvif->rekey_data.kek_len); 1080 kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr; 1081 kek_kck_cmd.akm = cpu_to_le32(mvmvif->rekey_data.akm); 1082 kek_kck_cmd.sta_id = cpu_to_le32(mvmvif->deflink.ap_sta_id); 1083 1084 if (cmd_ver == 4) { 1085 cmd_size = sizeof(struct iwl_wowlan_kek_kck_material_cmd_v4); 1086 } else { 1087 if (cmd_ver == 3) 1088 cmd_size = 1089 sizeof(struct iwl_wowlan_kek_kck_material_cmd_v3); 1090 else 1091 cmd_size = 1092 sizeof(struct iwl_wowlan_kek_kck_material_cmd_v2); 1093 /* skip the sta_id at the beginning */ 1094 _kek_kck_cmd = (void *) 1095 ((u8 *)_kek_kck_cmd + sizeof(kek_kck_cmd.sta_id)); 1096 } 1097 1098 IWL_DEBUG_WOWLAN(mvm, "setting akm %d\n", 1099 mvmvif->rekey_data.akm); 1100 1101 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_KEK_KCK_MATERIAL, 1102 CMD_ASYNC, cmd_size, _kek_kck_cmd); 1103 if (ret) 1104 return ret; 1105 } 1106 1107 return 0; 1108 } 1109 1110 static int 1111 iwl_mvm_wowlan_config(struct iwl_mvm *mvm, 1112 struct cfg80211_wowlan *wowlan, 1113 struct iwl_wowlan_config_cmd *wowlan_config_cmd, 1114 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif, 1115 struct ieee80211_sta *ap_sta) 1116 { 1117 int ret; 1118 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 1119 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1120 1121 mvm->offload_tid = wowlan_config_cmd->offloading_tid; 1122 1123 if (!unified_image) { 1124 ret = iwl_mvm_switch_to_d3(mvm); 1125 if (ret) 1126 return ret; 1127 1128 ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta); 1129 if (ret) 1130 return ret; 1131 } 1132 1133 /* 1134 * This needs to be unlocked due to lock ordering 1135 * constraints. Since we're in the suspend path 1136 * that isn't really a problem though. 1137 */ 1138 mutex_unlock(&mvm->mutex); 1139 ret = iwl_mvm_wowlan_config_key_params(mvm, vif); 1140 mutex_lock(&mvm->mutex); 1141 if (ret) 1142 return ret; 1143 1144 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0, 1145 sizeof(*wowlan_config_cmd), 1146 wowlan_config_cmd); 1147 if (ret) 1148 return ret; 1149 1150 if (fw_has_api(&mvm->fw->ucode_capa, 1151 IWL_UCODE_TLV_API_WOWLAN_TCP_SYN_WAKE)) 1152 ret = iwl_mvm_send_patterns(mvm, vif, wowlan); 1153 else 1154 ret = iwl_mvm_send_patterns_v1(mvm, wowlan); 1155 if (ret) 1156 return ret; 1157 1158 return iwl_mvm_send_proto_offload(mvm, vif, false, true, 0); 1159 } 1160 1161 static int 1162 iwl_mvm_netdetect_config(struct iwl_mvm *mvm, 1163 struct cfg80211_wowlan *wowlan, 1164 struct cfg80211_sched_scan_request *nd_config, 1165 struct ieee80211_vif *vif) 1166 { 1167 int ret; 1168 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 1169 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1170 1171 if (!unified_image) { 1172 ret = iwl_mvm_switch_to_d3(mvm); 1173 if (ret) 1174 return ret; 1175 } else { 1176 /* In theory, we wouldn't have to stop a running sched 1177 * scan in order to start another one (for 1178 * net-detect). But in practice this doesn't seem to 1179 * work properly, so stop any running sched_scan now. 1180 */ 1181 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 1182 if (ret) 1183 return ret; 1184 } 1185 1186 ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies, 1187 IWL_MVM_SCAN_NETDETECT); 1188 if (ret) 1189 return ret; 1190 1191 if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels)) 1192 return -EBUSY; 1193 1194 /* save the sched scan matchsets... */ 1195 if (nd_config->n_match_sets) { 1196 mvm->nd_match_sets = kmemdup(nd_config->match_sets, 1197 sizeof(*nd_config->match_sets) * 1198 nd_config->n_match_sets, 1199 GFP_KERNEL); 1200 if (mvm->nd_match_sets) 1201 mvm->n_nd_match_sets = nd_config->n_match_sets; 1202 } 1203 1204 /* ...and the sched scan channels for later reporting */ 1205 mvm->nd_channels = kmemdup(nd_config->channels, 1206 sizeof(*nd_config->channels) * 1207 nd_config->n_channels, 1208 GFP_KERNEL); 1209 if (mvm->nd_channels) 1210 mvm->n_nd_channels = nd_config->n_channels; 1211 1212 return 0; 1213 } 1214 1215 static void iwl_mvm_free_nd(struct iwl_mvm *mvm) 1216 { 1217 kfree(mvm->nd_match_sets); 1218 mvm->nd_match_sets = NULL; 1219 mvm->n_nd_match_sets = 0; 1220 kfree(mvm->nd_channels); 1221 mvm->nd_channels = NULL; 1222 mvm->n_nd_channels = 0; 1223 } 1224 1225 static int __iwl_mvm_suspend(struct ieee80211_hw *hw, 1226 struct cfg80211_wowlan *wowlan, 1227 bool test) 1228 { 1229 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1230 struct ieee80211_vif *vif = NULL; 1231 struct iwl_mvm_vif *mvmvif = NULL; 1232 struct ieee80211_sta *ap_sta = NULL; 1233 struct iwl_d3_manager_config d3_cfg_cmd_data = { 1234 /* 1235 * Program the minimum sleep time to 10 seconds, as many 1236 * platforms have issues processing a wakeup signal while 1237 * still being in the process of suspending. 1238 */ 1239 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000), 1240 }; 1241 struct iwl_host_cmd d3_cfg_cmd = { 1242 .id = D3_CONFIG_CMD, 1243 .flags = CMD_WANT_SKB | CMD_SEND_IN_D3, 1244 .data[0] = &d3_cfg_cmd_data, 1245 .len[0] = sizeof(d3_cfg_cmd_data), 1246 }; 1247 int ret; 1248 int len __maybe_unused; 1249 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 1250 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1251 1252 if (!wowlan) { 1253 /* 1254 * mac80211 shouldn't get here, but for D3 test 1255 * it doesn't warrant a warning 1256 */ 1257 WARN_ON(!test); 1258 return -EINVAL; 1259 } 1260 1261 mutex_lock(&mvm->mutex); 1262 1263 set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 1264 1265 synchronize_net(); 1266 1267 vif = iwl_mvm_get_bss_vif(mvm); 1268 if (IS_ERR_OR_NULL(vif)) { 1269 ret = 1; 1270 goto out_noreset; 1271 } 1272 1273 mvmvif = iwl_mvm_vif_from_mac80211(vif); 1274 1275 if (mvmvif->deflink.ap_sta_id == IWL_MVM_INVALID_STA) { 1276 /* if we're not associated, this must be netdetect */ 1277 if (!wowlan->nd_config) { 1278 ret = 1; 1279 goto out_noreset; 1280 } 1281 1282 ret = iwl_mvm_netdetect_config( 1283 mvm, wowlan, wowlan->nd_config, vif); 1284 if (ret) 1285 goto out; 1286 1287 mvm->net_detect = true; 1288 } else { 1289 struct iwl_wowlan_config_cmd wowlan_config_cmd = {}; 1290 1291 wowlan_config_cmd.sta_id = mvmvif->deflink.ap_sta_id; 1292 1293 ap_sta = rcu_dereference_protected( 1294 mvm->fw_id_to_mac_id[mvmvif->deflink.ap_sta_id], 1295 lockdep_is_held(&mvm->mutex)); 1296 if (IS_ERR_OR_NULL(ap_sta)) { 1297 ret = -EINVAL; 1298 goto out_noreset; 1299 } 1300 1301 ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd, 1302 vif, mvmvif, ap_sta); 1303 if (ret) 1304 goto out_noreset; 1305 ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd, 1306 vif, mvmvif, ap_sta); 1307 if (ret) 1308 goto out; 1309 1310 mvm->net_detect = false; 1311 } 1312 1313 ret = iwl_mvm_power_update_device(mvm); 1314 if (ret) 1315 goto out; 1316 1317 ret = iwl_mvm_power_update_mac(mvm); 1318 if (ret) 1319 goto out; 1320 1321 #ifdef CONFIG_IWLWIFI_DEBUGFS 1322 if (mvm->d3_wake_sysassert) 1323 d3_cfg_cmd_data.wakeup_flags |= 1324 cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR); 1325 #endif 1326 1327 /* 1328 * Prior to 9000 device family the driver needs to stop the dbg 1329 * recording before entering D3. In later devices the FW stops the 1330 * recording automatically. 1331 */ 1332 if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_9000) 1333 iwl_fw_dbg_stop_restart_recording(&mvm->fwrt, NULL, true); 1334 1335 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_D3; 1336 1337 /* must be last -- this switches firmware state */ 1338 ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd); 1339 if (ret) 1340 goto out; 1341 #ifdef CONFIG_IWLWIFI_DEBUGFS 1342 len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt); 1343 if (len >= sizeof(u32)) { 1344 mvm->d3_test_pme_ptr = 1345 le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data); 1346 } 1347 #endif 1348 iwl_free_resp(&d3_cfg_cmd); 1349 1350 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1351 1352 ret = iwl_trans_d3_suspend(mvm->trans, test, !unified_image); 1353 out: 1354 if (ret < 0) { 1355 iwl_mvm_free_nd(mvm); 1356 1357 if (!unified_image) { 1358 if (mvm->fw_restart > 0) { 1359 mvm->fw_restart--; 1360 ieee80211_restart_hw(mvm->hw); 1361 } 1362 } 1363 1364 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 1365 } 1366 out_noreset: 1367 mutex_unlock(&mvm->mutex); 1368 1369 return ret; 1370 } 1371 1372 int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) 1373 { 1374 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1375 1376 iwl_mvm_pause_tcm(mvm, true); 1377 1378 iwl_fw_runtime_suspend(&mvm->fwrt); 1379 1380 return __iwl_mvm_suspend(hw, wowlan, false); 1381 } 1382 1383 /* converted data from the different status responses */ 1384 struct iwl_wowlan_status_data { 1385 u64 replay_ctr; 1386 u32 num_of_gtk_rekeys; 1387 u32 received_beacons; 1388 u32 wakeup_reasons; 1389 u32 wake_packet_length; 1390 u32 wake_packet_bufsize; 1391 u16 pattern_number; 1392 u16 non_qos_seq_ctr; 1393 u16 qos_seq_ctr[8]; 1394 u8 tid_tear_down; 1395 1396 struct { 1397 /* including RX MIC key for TKIP */ 1398 u8 key[WOWLAN_KEY_MAX_SIZE]; 1399 u8 len; 1400 u8 flags; 1401 } gtk; 1402 1403 struct { 1404 /* 1405 * We store both the TKIP and AES representations 1406 * coming from the firmware because we decode the 1407 * data from there before we iterate the keys and 1408 * know which one we need. 1409 */ 1410 struct { 1411 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT]; 1412 } tkip, aes; 1413 1414 /* 1415 * We use -1 for when we have valid data but don't know 1416 * the key ID from firmware, and thus it needs to be 1417 * installed with the last key (depending on rekeying). 1418 */ 1419 s8 key_id; 1420 bool valid; 1421 } gtk_seq[2]; 1422 1423 struct { 1424 /* Same as above */ 1425 struct { 1426 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT]; 1427 u64 tx_pn; 1428 } tkip, aes; 1429 } ptk; 1430 1431 struct { 1432 u64 ipn; 1433 u8 key[WOWLAN_KEY_MAX_SIZE]; 1434 u8 len; 1435 u8 flags; 1436 } igtk; 1437 1438 u8 *wake_packet; 1439 }; 1440 1441 static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm, 1442 struct ieee80211_vif *vif, 1443 struct iwl_wowlan_status_data *status) 1444 { 1445 struct sk_buff *pkt = NULL; 1446 struct cfg80211_wowlan_wakeup wakeup = { 1447 .pattern_idx = -1, 1448 }; 1449 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; 1450 u32 reasons = status->wakeup_reasons; 1451 1452 if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) { 1453 wakeup_report = NULL; 1454 goto report; 1455 } 1456 1457 pm_wakeup_event(mvm->dev, 0); 1458 1459 if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET) 1460 wakeup.magic_pkt = true; 1461 1462 if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN) 1463 wakeup.pattern_idx = 1464 status->pattern_number; 1465 1466 if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 1467 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)) 1468 wakeup.disconnect = true; 1469 1470 if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE) 1471 wakeup.gtk_rekey_failure = true; 1472 1473 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 1474 wakeup.rfkill_release = true; 1475 1476 if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST) 1477 wakeup.eap_identity_req = true; 1478 1479 if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE) 1480 wakeup.four_way_handshake = true; 1481 1482 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS) 1483 wakeup.tcp_connlost = true; 1484 1485 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE) 1486 wakeup.tcp_nomoretokens = true; 1487 1488 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET) 1489 wakeup.tcp_match = true; 1490 1491 if (status->wake_packet) { 1492 int pktsize = status->wake_packet_bufsize; 1493 int pktlen = status->wake_packet_length; 1494 const u8 *pktdata = status->wake_packet; 1495 const struct ieee80211_hdr *hdr = (const void *)pktdata; 1496 int truncated = pktlen - pktsize; 1497 1498 /* this would be a firmware bug */ 1499 if (WARN_ON_ONCE(truncated < 0)) 1500 truncated = 0; 1501 1502 if (ieee80211_is_data(hdr->frame_control)) { 1503 int hdrlen = ieee80211_hdrlen(hdr->frame_control); 1504 int ivlen = 0, icvlen = 4; /* also FCS */ 1505 1506 pkt = alloc_skb(pktsize, GFP_KERNEL); 1507 if (!pkt) 1508 goto report; 1509 1510 skb_put_data(pkt, pktdata, hdrlen); 1511 pktdata += hdrlen; 1512 pktsize -= hdrlen; 1513 1514 if (ieee80211_has_protected(hdr->frame_control)) { 1515 /* 1516 * This is unlocked and using gtk_i(c)vlen, 1517 * but since everything is under RTNL still 1518 * that's not really a problem - changing 1519 * it would be difficult. 1520 */ 1521 if (is_multicast_ether_addr(hdr->addr1)) { 1522 ivlen = mvm->gtk_ivlen; 1523 icvlen += mvm->gtk_icvlen; 1524 } else { 1525 ivlen = mvm->ptk_ivlen; 1526 icvlen += mvm->ptk_icvlen; 1527 } 1528 } 1529 1530 /* if truncated, FCS/ICV is (partially) gone */ 1531 if (truncated >= icvlen) { 1532 icvlen = 0; 1533 truncated -= icvlen; 1534 } else { 1535 icvlen -= truncated; 1536 truncated = 0; 1537 } 1538 1539 pktsize -= ivlen + icvlen; 1540 pktdata += ivlen; 1541 1542 skb_put_data(pkt, pktdata, pktsize); 1543 1544 if (ieee80211_data_to_8023(pkt, vif->addr, vif->type)) 1545 goto report; 1546 wakeup.packet = pkt->data; 1547 wakeup.packet_present_len = pkt->len; 1548 wakeup.packet_len = pkt->len - truncated; 1549 wakeup.packet_80211 = false; 1550 } else { 1551 int fcslen = 4; 1552 1553 if (truncated >= 4) { 1554 truncated -= 4; 1555 fcslen = 0; 1556 } else { 1557 fcslen -= truncated; 1558 truncated = 0; 1559 } 1560 pktsize -= fcslen; 1561 wakeup.packet = status->wake_packet; 1562 wakeup.packet_present_len = pktsize; 1563 wakeup.packet_len = pktlen - truncated; 1564 wakeup.packet_80211 = true; 1565 } 1566 } 1567 1568 report: 1569 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); 1570 kfree_skb(pkt); 1571 } 1572 1573 static void iwl_mvm_le64_to_aes_seq(__le64 le_pn, struct ieee80211_key_seq *seq) 1574 { 1575 u64 pn = le64_to_cpu(le_pn); 1576 1577 seq->ccmp.pn[0] = pn >> 40; 1578 seq->ccmp.pn[1] = pn >> 32; 1579 seq->ccmp.pn[2] = pn >> 24; 1580 seq->ccmp.pn[3] = pn >> 16; 1581 seq->ccmp.pn[4] = pn >> 8; 1582 seq->ccmp.pn[5] = pn; 1583 } 1584 1585 static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc, 1586 struct ieee80211_key_seq *seq) 1587 { 1588 iwl_mvm_le64_to_aes_seq(sc->pn, seq); 1589 } 1590 1591 static void iwl_mvm_le64_to_tkip_seq(__le64 le_pn, struct ieee80211_key_seq *seq) 1592 { 1593 u64 pn = le64_to_cpu(le_pn); 1594 1595 seq->tkip.iv16 = (u16)pn; 1596 seq->tkip.iv32 = (u32)(pn >> 16); 1597 } 1598 1599 static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc, 1600 struct ieee80211_key_seq *seq) 1601 { 1602 seq->tkip.iv32 = le32_to_cpu(sc->iv32); 1603 seq->tkip.iv16 = le16_to_cpu(sc->iv16); 1604 } 1605 1606 static void iwl_mvm_set_key_rx_seq_tids(struct ieee80211_key_conf *key, 1607 struct ieee80211_key_seq *seq) 1608 { 1609 int tid; 1610 1611 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) 1612 ieee80211_set_key_rx_seq(key, tid, &seq[tid]); 1613 } 1614 1615 static void iwl_mvm_set_aes_ptk_rx_seq(struct iwl_mvm *mvm, 1616 struct iwl_wowlan_status_data *status, 1617 struct ieee80211_sta *sta, 1618 struct ieee80211_key_conf *key) 1619 { 1620 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1621 struct iwl_mvm_key_pn *ptk_pn; 1622 int tid; 1623 1624 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.aes.seq); 1625 1626 if (!iwl_mvm_has_new_rx_api(mvm)) 1627 return; 1628 1629 1630 rcu_read_lock(); 1631 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]); 1632 if (WARN_ON(!ptk_pn)) { 1633 rcu_read_unlock(); 1634 return; 1635 } 1636 1637 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1638 int i; 1639 1640 for (i = 1; i < mvm->trans->num_rx_queues; i++) 1641 memcpy(ptk_pn->q[i].pn[tid], 1642 status->ptk.aes.seq[tid].ccmp.pn, 1643 IEEE80211_CCMP_PN_LEN); 1644 } 1645 rcu_read_unlock(); 1646 } 1647 1648 static void iwl_mvm_convert_key_counters(struct iwl_wowlan_status_data *status, 1649 union iwl_all_tsc_rsc *sc) 1650 { 1651 int i; 1652 1653 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT); 1654 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC); 1655 1656 /* GTK RX counters */ 1657 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1658 iwl_mvm_tkip_sc_to_seq(&sc->tkip.multicast_rsc[i], 1659 &status->gtk_seq[0].tkip.seq[i]); 1660 iwl_mvm_aes_sc_to_seq(&sc->aes.multicast_rsc[i], 1661 &status->gtk_seq[0].aes.seq[i]); 1662 } 1663 status->gtk_seq[0].valid = true; 1664 status->gtk_seq[0].key_id = -1; 1665 1666 /* PTK TX counter */ 1667 status->ptk.tkip.tx_pn = (u64)le16_to_cpu(sc->tkip.tsc.iv16) | 1668 ((u64)le32_to_cpu(sc->tkip.tsc.iv32) << 16); 1669 status->ptk.aes.tx_pn = le64_to_cpu(sc->aes.tsc.pn); 1670 1671 /* PTK RX counters */ 1672 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1673 iwl_mvm_tkip_sc_to_seq(&sc->tkip.unicast_rsc[i], 1674 &status->ptk.tkip.seq[i]); 1675 iwl_mvm_aes_sc_to_seq(&sc->aes.unicast_rsc[i], 1676 &status->ptk.aes.seq[i]); 1677 } 1678 } 1679 1680 static void 1681 iwl_mvm_convert_key_counters_v5_gtk_seq(struct iwl_wowlan_status_data *status, 1682 struct iwl_wowlan_all_rsc_tsc_v5 *sc, 1683 unsigned int idx, unsigned int key_id) 1684 { 1685 int tid; 1686 1687 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1688 iwl_mvm_le64_to_tkip_seq(sc->mcast_rsc[idx][tid], 1689 &status->gtk_seq[idx].tkip.seq[tid]); 1690 iwl_mvm_le64_to_aes_seq(sc->mcast_rsc[idx][tid], 1691 &status->gtk_seq[idx].aes.seq[tid]); 1692 } 1693 1694 status->gtk_seq[idx].valid = true; 1695 status->gtk_seq[idx].key_id = key_id; 1696 } 1697 1698 static void 1699 iwl_mvm_convert_key_counters_v5(struct iwl_wowlan_status_data *status, 1700 struct iwl_wowlan_all_rsc_tsc_v5 *sc) 1701 { 1702 int i, tid; 1703 1704 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT); 1705 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC); 1706 BUILD_BUG_ON(ARRAY_SIZE(sc->mcast_rsc) != ARRAY_SIZE(status->gtk_seq)); 1707 1708 /* GTK RX counters */ 1709 for (i = 0; i < ARRAY_SIZE(sc->mcast_key_id_map); i++) { 1710 u8 entry = sc->mcast_key_id_map[i]; 1711 1712 if (entry < ARRAY_SIZE(sc->mcast_rsc)) 1713 iwl_mvm_convert_key_counters_v5_gtk_seq(status, sc, 1714 entry, i); 1715 } 1716 1717 /* PTK TX counters not needed, assigned in device */ 1718 1719 /* PTK RX counters */ 1720 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1721 iwl_mvm_le64_to_tkip_seq(sc->ucast_rsc[tid], 1722 &status->ptk.tkip.seq[tid]); 1723 iwl_mvm_le64_to_aes_seq(sc->ucast_rsc[tid], 1724 &status->ptk.aes.seq[tid]); 1725 } 1726 } 1727 1728 static void iwl_mvm_set_key_rx_seq_idx(struct ieee80211_key_conf *key, 1729 struct iwl_wowlan_status_data *status, 1730 int idx) 1731 { 1732 switch (key->cipher) { 1733 case WLAN_CIPHER_SUITE_CCMP: 1734 case WLAN_CIPHER_SUITE_GCMP: 1735 case WLAN_CIPHER_SUITE_GCMP_256: 1736 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].aes.seq); 1737 break; 1738 case WLAN_CIPHER_SUITE_TKIP: 1739 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].tkip.seq); 1740 break; 1741 default: 1742 WARN_ON(1); 1743 } 1744 } 1745 1746 static void iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf *key, 1747 struct iwl_wowlan_status_data *status, 1748 bool installed) 1749 { 1750 int i; 1751 1752 for (i = 0; i < ARRAY_SIZE(status->gtk_seq); i++) { 1753 if (!status->gtk_seq[i].valid) 1754 continue; 1755 1756 /* Handle the case where we know the key ID */ 1757 if (status->gtk_seq[i].key_id == key->keyidx) { 1758 s8 new_key_id = -1; 1759 1760 if (status->num_of_gtk_rekeys) 1761 new_key_id = status->gtk.flags & 1762 IWL_WOWLAN_GTK_IDX_MASK; 1763 1764 /* Don't install a new key's value to an old key */ 1765 if (new_key_id != key->keyidx) 1766 iwl_mvm_set_key_rx_seq_idx(key, status, i); 1767 continue; 1768 } 1769 1770 /* handle the case where we didn't, last key only */ 1771 if (status->gtk_seq[i].key_id == -1 && 1772 (!status->num_of_gtk_rekeys || installed)) 1773 iwl_mvm_set_key_rx_seq_idx(key, status, i); 1774 } 1775 } 1776 1777 struct iwl_mvm_d3_gtk_iter_data { 1778 struct iwl_mvm *mvm; 1779 struct iwl_wowlan_status_data *status; 1780 void *last_gtk; 1781 u32 cipher; 1782 bool find_phase, unhandled_cipher; 1783 int num_keys; 1784 }; 1785 1786 static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw, 1787 struct ieee80211_vif *vif, 1788 struct ieee80211_sta *sta, 1789 struct ieee80211_key_conf *key, 1790 void *_data) 1791 { 1792 struct iwl_mvm_d3_gtk_iter_data *data = _data; 1793 struct iwl_wowlan_status_data *status = data->status; 1794 1795 if (data->unhandled_cipher) 1796 return; 1797 1798 switch (key->cipher) { 1799 case WLAN_CIPHER_SUITE_WEP40: 1800 case WLAN_CIPHER_SUITE_WEP104: 1801 /* ignore WEP completely, nothing to do */ 1802 return; 1803 case WLAN_CIPHER_SUITE_CCMP: 1804 case WLAN_CIPHER_SUITE_GCMP: 1805 case WLAN_CIPHER_SUITE_GCMP_256: 1806 case WLAN_CIPHER_SUITE_TKIP: 1807 /* we support these */ 1808 break; 1809 default: 1810 /* everything else (even CMAC for MFP) - disconnect from AP */ 1811 data->unhandled_cipher = true; 1812 return; 1813 } 1814 1815 data->num_keys++; 1816 1817 /* 1818 * pairwise key - update sequence counters only; 1819 * note that this assumes no TDLS sessions are active 1820 */ 1821 if (sta) { 1822 if (data->find_phase) 1823 return; 1824 1825 switch (key->cipher) { 1826 case WLAN_CIPHER_SUITE_CCMP: 1827 case WLAN_CIPHER_SUITE_GCMP: 1828 case WLAN_CIPHER_SUITE_GCMP_256: 1829 atomic64_set(&key->tx_pn, status->ptk.aes.tx_pn); 1830 iwl_mvm_set_aes_ptk_rx_seq(data->mvm, status, sta, key); 1831 break; 1832 case WLAN_CIPHER_SUITE_TKIP: 1833 atomic64_set(&key->tx_pn, status->ptk.tkip.tx_pn); 1834 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.tkip.seq); 1835 break; 1836 } 1837 1838 /* that's it for this key */ 1839 return; 1840 } 1841 1842 if (data->find_phase) { 1843 data->last_gtk = key; 1844 data->cipher = key->cipher; 1845 return; 1846 } 1847 1848 if (data->status->num_of_gtk_rekeys) 1849 ieee80211_remove_key(key); 1850 1851 if (data->last_gtk == key) 1852 iwl_mvm_set_key_rx_seq(key, data->status, false); 1853 } 1854 1855 static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm, 1856 struct ieee80211_vif *vif, 1857 struct iwl_wowlan_status_data *status) 1858 { 1859 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1860 struct iwl_mvm_d3_gtk_iter_data gtkdata = { 1861 .mvm = mvm, 1862 .status = status, 1863 }; 1864 u32 disconnection_reasons = 1865 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 1866 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH; 1867 1868 if (!status || !vif->bss_conf.bssid) 1869 return false; 1870 1871 if (status->wakeup_reasons & disconnection_reasons) 1872 return false; 1873 1874 /* find last GTK that we used initially, if any */ 1875 gtkdata.find_phase = true; 1876 ieee80211_iter_keys(mvm->hw, vif, 1877 iwl_mvm_d3_update_keys, >kdata); 1878 /* not trying to keep connections with MFP/unhandled ciphers */ 1879 if (gtkdata.unhandled_cipher) 1880 return false; 1881 if (!gtkdata.num_keys) 1882 goto out; 1883 if (!gtkdata.last_gtk) 1884 return false; 1885 1886 /* 1887 * invalidate all other GTKs that might still exist and update 1888 * the one that we used 1889 */ 1890 gtkdata.find_phase = false; 1891 ieee80211_iter_keys(mvm->hw, vif, 1892 iwl_mvm_d3_update_keys, >kdata); 1893 1894 IWL_DEBUG_WOWLAN(mvm, "num of GTK rekeying %d\n", 1895 status->num_of_gtk_rekeys); 1896 if (status->num_of_gtk_rekeys) { 1897 struct ieee80211_key_conf *key; 1898 struct { 1899 struct ieee80211_key_conf conf; 1900 u8 key[32]; 1901 } conf = { 1902 .conf.cipher = gtkdata.cipher, 1903 .conf.keyidx = 1904 status->gtk.flags & IWL_WOWLAN_GTK_IDX_MASK, 1905 }; 1906 __be64 replay_ctr; 1907 1908 IWL_DEBUG_WOWLAN(mvm, 1909 "Received from FW GTK cipher %d, key index %d\n", 1910 conf.conf.cipher, conf.conf.keyidx); 1911 1912 BUILD_BUG_ON(WLAN_KEY_LEN_CCMP != WLAN_KEY_LEN_GCMP); 1913 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_CCMP); 1914 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_GCMP_256); 1915 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_TKIP); 1916 BUILD_BUG_ON(sizeof(conf.key) < sizeof(status->gtk.key)); 1917 1918 memcpy(conf.conf.key, status->gtk.key, sizeof(status->gtk.key)); 1919 1920 switch (gtkdata.cipher) { 1921 case WLAN_CIPHER_SUITE_CCMP: 1922 case WLAN_CIPHER_SUITE_GCMP: 1923 conf.conf.keylen = WLAN_KEY_LEN_CCMP; 1924 break; 1925 case WLAN_CIPHER_SUITE_GCMP_256: 1926 conf.conf.keylen = WLAN_KEY_LEN_GCMP_256; 1927 break; 1928 case WLAN_CIPHER_SUITE_TKIP: 1929 conf.conf.keylen = WLAN_KEY_LEN_TKIP; 1930 break; 1931 } 1932 1933 key = ieee80211_gtk_rekey_add(vif, &conf.conf); 1934 if (IS_ERR(key)) 1935 return false; 1936 iwl_mvm_set_key_rx_seq(key, status, true); 1937 1938 replay_ctr = cpu_to_be64(status->replay_ctr); 1939 1940 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid, 1941 (void *)&replay_ctr, GFP_KERNEL); 1942 } 1943 1944 out: 1945 if (iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP, 1946 WOWLAN_GET_STATUSES, 0) < 10) { 1947 mvmvif->seqno_valid = true; 1948 /* +0x10 because the set API expects next-to-use, not last-used */ 1949 mvmvif->seqno = status->non_qos_seq_ctr + 0x10; 1950 } 1951 1952 return true; 1953 } 1954 1955 static void iwl_mvm_convert_gtk_v2(struct iwl_wowlan_status_data *status, 1956 struct iwl_wowlan_gtk_status_v2 *data) 1957 { 1958 BUILD_BUG_ON(sizeof(status->gtk.key) < sizeof(data->key)); 1959 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY + 1960 sizeof(data->tkip_mic_key) > 1961 sizeof(status->gtk.key)); 1962 1963 status->gtk.len = data->key_len; 1964 status->gtk.flags = data->key_flags; 1965 1966 memcpy(status->gtk.key, data->key, sizeof(data->key)); 1967 1968 /* if it's as long as the TKIP encryption key, copy MIC key */ 1969 if (status->gtk.len == NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY) 1970 memcpy(status->gtk.key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 1971 data->tkip_mic_key, sizeof(data->tkip_mic_key)); 1972 } 1973 1974 static void iwl_mvm_convert_gtk_v3(struct iwl_wowlan_status_data *status, 1975 struct iwl_wowlan_gtk_status_v3 *data) 1976 { 1977 /* The parts we need are identical in v2 and v3 */ 1978 #define CHECK(_f) do { \ 1979 BUILD_BUG_ON(offsetof(struct iwl_wowlan_gtk_status_v2, _f) != \ 1980 offsetof(struct iwl_wowlan_gtk_status_v3, _f)); \ 1981 BUILD_BUG_ON(offsetofend(struct iwl_wowlan_gtk_status_v2, _f) !=\ 1982 offsetofend(struct iwl_wowlan_gtk_status_v3, _f)); \ 1983 } while (0) 1984 1985 CHECK(key); 1986 CHECK(key_len); 1987 CHECK(key_flags); 1988 CHECK(tkip_mic_key); 1989 #undef CHECK 1990 1991 iwl_mvm_convert_gtk_v2(status, (void *)data); 1992 } 1993 1994 static void iwl_mvm_convert_igtk(struct iwl_wowlan_status_data *status, 1995 struct iwl_wowlan_igtk_status *data) 1996 { 1997 const u8 *ipn = data->ipn; 1998 1999 BUILD_BUG_ON(sizeof(status->igtk.key) < sizeof(data->key)); 2000 2001 status->igtk.len = data->key_len; 2002 status->igtk.flags = data->key_flags; 2003 2004 memcpy(status->igtk.key, data->key, sizeof(data->key)); 2005 2006 status->igtk.ipn = ((u64)ipn[5] << 0) | 2007 ((u64)ipn[4] << 8) | 2008 ((u64)ipn[3] << 16) | 2009 ((u64)ipn[2] << 24) | 2010 ((u64)ipn[1] << 32) | 2011 ((u64)ipn[0] << 40); 2012 } 2013 2014 static void iwl_mvm_parse_wowlan_info_notif(struct iwl_mvm *mvm, 2015 struct iwl_wowlan_info_notif *data, 2016 struct iwl_wowlan_status_data *status, 2017 u32 len) 2018 { 2019 u32 i; 2020 2021 if (!data) { 2022 IWL_ERR(mvm, "iwl_wowlan_info_notif data is NULL\n"); 2023 status = NULL; 2024 return; 2025 } 2026 2027 if (len < sizeof(*data)) { 2028 IWL_ERR(mvm, "Invalid WoWLAN info notification!\n"); 2029 status = NULL; 2030 return; 2031 } 2032 2033 iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc); 2034 iwl_mvm_convert_gtk_v3(status, &data->gtk[0]); 2035 iwl_mvm_convert_igtk(status, &data->igtk[0]); 2036 2037 status->replay_ctr = le64_to_cpu(data->replay_ctr); 2038 status->pattern_number = le16_to_cpu(data->pattern_number); 2039 for (i = 0; i < IWL_MAX_TID_COUNT; i++) 2040 status->qos_seq_ctr[i] = 2041 le16_to_cpu(data->qos_seq_ctr[i]); 2042 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); 2043 status->num_of_gtk_rekeys = 2044 le32_to_cpu(data->num_of_gtk_rekeys); 2045 status->received_beacons = le32_to_cpu(data->received_beacons); 2046 status->tid_tear_down = data->tid_tear_down; 2047 } 2048 2049 /* Occasionally, templates would be nice. This is one of those times ... */ 2050 #define iwl_mvm_parse_wowlan_status_common(_ver) \ 2051 static struct iwl_wowlan_status_data * \ 2052 iwl_mvm_parse_wowlan_status_common_ ## _ver(struct iwl_mvm *mvm, \ 2053 struct iwl_wowlan_status_ ##_ver *data,\ 2054 int len) \ 2055 { \ 2056 struct iwl_wowlan_status_data *status; \ 2057 int data_size, i; \ 2058 \ 2059 if (len < sizeof(*data)) { \ 2060 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \ 2061 return NULL; \ 2062 } \ 2063 \ 2064 data_size = ALIGN(le32_to_cpu(data->wake_packet_bufsize), 4); \ 2065 if (len != sizeof(*data) + data_size) { \ 2066 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \ 2067 return NULL; \ 2068 } \ 2069 \ 2070 status = kzalloc(sizeof(*status), GFP_KERNEL); \ 2071 if (!status) \ 2072 return NULL; \ 2073 \ 2074 /* copy all the common fields */ \ 2075 status->replay_ctr = le64_to_cpu(data->replay_ctr); \ 2076 status->pattern_number = le16_to_cpu(data->pattern_number); \ 2077 status->non_qos_seq_ctr = le16_to_cpu(data->non_qos_seq_ctr); \ 2078 for (i = 0; i < 8; i++) \ 2079 status->qos_seq_ctr[i] = \ 2080 le16_to_cpu(data->qos_seq_ctr[i]); \ 2081 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); \ 2082 status->num_of_gtk_rekeys = \ 2083 le32_to_cpu(data->num_of_gtk_rekeys); \ 2084 status->received_beacons = le32_to_cpu(data->received_beacons); \ 2085 status->wake_packet_length = \ 2086 le32_to_cpu(data->wake_packet_length); \ 2087 status->wake_packet_bufsize = \ 2088 le32_to_cpu(data->wake_packet_bufsize); \ 2089 if (status->wake_packet_bufsize) { \ 2090 status->wake_packet = \ 2091 kmemdup(data->wake_packet, \ 2092 status->wake_packet_bufsize, \ 2093 GFP_KERNEL); \ 2094 if (!status->wake_packet) { \ 2095 kfree(status); \ 2096 return NULL; \ 2097 } \ 2098 } else { \ 2099 status->wake_packet = NULL; \ 2100 } \ 2101 \ 2102 return status; \ 2103 } 2104 2105 iwl_mvm_parse_wowlan_status_common(v6) 2106 iwl_mvm_parse_wowlan_status_common(v7) 2107 iwl_mvm_parse_wowlan_status_common(v9) 2108 iwl_mvm_parse_wowlan_status_common(v12) 2109 2110 static struct iwl_wowlan_status_data * 2111 iwl_mvm_send_wowlan_get_status(struct iwl_mvm *mvm, u8 sta_id) 2112 { 2113 struct iwl_wowlan_status_data *status; 2114 struct iwl_wowlan_get_status_cmd get_status_cmd = { 2115 .sta_id = cpu_to_le32(sta_id), 2116 }; 2117 struct iwl_host_cmd cmd = { 2118 .id = WOWLAN_GET_STATUSES, 2119 .flags = CMD_WANT_SKB, 2120 .data = { &get_status_cmd, }, 2121 .len = { sizeof(get_status_cmd), }, 2122 }; 2123 int ret, len; 2124 u8 notif_ver; 2125 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id, 2126 IWL_FW_CMD_VER_UNKNOWN); 2127 2128 if (cmd_ver == IWL_FW_CMD_VER_UNKNOWN) 2129 cmd.len[0] = 0; 2130 2131 lockdep_assert_held(&mvm->mutex); 2132 2133 ret = iwl_mvm_send_cmd(mvm, &cmd); 2134 if (ret) { 2135 IWL_ERR(mvm, "failed to query wakeup status (%d)\n", ret); 2136 return ERR_PTR(ret); 2137 } 2138 2139 len = iwl_rx_packet_payload_len(cmd.resp_pkt); 2140 2141 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */ 2142 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP, 2143 WOWLAN_GET_STATUSES, 0); 2144 if (!notif_ver) 2145 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, 2146 WOWLAN_GET_STATUSES, 7); 2147 2148 if (!fw_has_api(&mvm->fw->ucode_capa, 2149 IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL)) { 2150 struct iwl_wowlan_status_v6 *v6 = (void *)cmd.resp_pkt->data; 2151 2152 status = iwl_mvm_parse_wowlan_status_common_v6(mvm, v6, len); 2153 if (!status) 2154 goto out_free_resp; 2155 2156 BUILD_BUG_ON(sizeof(v6->gtk.decrypt_key) > 2157 sizeof(status->gtk.key)); 2158 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY + 2159 sizeof(v6->gtk.tkip_mic_key) > 2160 sizeof(status->gtk.key)); 2161 2162 /* copy GTK info to the right place */ 2163 memcpy(status->gtk.key, v6->gtk.decrypt_key, 2164 sizeof(v6->gtk.decrypt_key)); 2165 memcpy(status->gtk.key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 2166 v6->gtk.tkip_mic_key, 2167 sizeof(v6->gtk.tkip_mic_key)); 2168 2169 iwl_mvm_convert_key_counters(status, &v6->gtk.rsc.all_tsc_rsc); 2170 2171 /* hardcode the key length to 16 since v6 only supports 16 */ 2172 status->gtk.len = 16; 2173 2174 /* 2175 * The key index only uses 2 bits (values 0 to 3) and 2176 * we always set bit 7 which means this is the 2177 * currently used key. 2178 */ 2179 status->gtk.flags = v6->gtk.key_index | BIT(7); 2180 } else if (notif_ver == 7) { 2181 struct iwl_wowlan_status_v7 *v7 = (void *)cmd.resp_pkt->data; 2182 2183 status = iwl_mvm_parse_wowlan_status_common_v7(mvm, v7, len); 2184 if (!status) 2185 goto out_free_resp; 2186 2187 iwl_mvm_convert_key_counters(status, &v7->gtk[0].rsc.all_tsc_rsc); 2188 iwl_mvm_convert_gtk_v2(status, &v7->gtk[0]); 2189 iwl_mvm_convert_igtk(status, &v7->igtk[0]); 2190 } else if (notif_ver == 9 || notif_ver == 10 || notif_ver == 11) { 2191 struct iwl_wowlan_status_v9 *v9 = (void *)cmd.resp_pkt->data; 2192 2193 /* these three command versions have same layout and size, the 2194 * difference is only in a few not used (reserved) fields. 2195 */ 2196 status = iwl_mvm_parse_wowlan_status_common_v9(mvm, v9, len); 2197 if (!status) 2198 goto out_free_resp; 2199 2200 iwl_mvm_convert_key_counters(status, &v9->gtk[0].rsc.all_tsc_rsc); 2201 iwl_mvm_convert_gtk_v2(status, &v9->gtk[0]); 2202 iwl_mvm_convert_igtk(status, &v9->igtk[0]); 2203 2204 status->tid_tear_down = v9->tid_tear_down; 2205 } else if (notif_ver == 12) { 2206 struct iwl_wowlan_status_v12 *v12 = (void *)cmd.resp_pkt->data; 2207 2208 status = iwl_mvm_parse_wowlan_status_common_v12(mvm, v12, len); 2209 if (!status) 2210 goto out_free_resp; 2211 2212 iwl_mvm_convert_key_counters_v5(status, &v12->gtk[0].sc); 2213 iwl_mvm_convert_gtk_v3(status, &v12->gtk[0]); 2214 iwl_mvm_convert_igtk(status, &v12->igtk[0]); 2215 2216 status->tid_tear_down = v12->tid_tear_down; 2217 } else { 2218 IWL_ERR(mvm, 2219 "Firmware advertises unknown WoWLAN status response %d!\n", 2220 notif_ver); 2221 status = NULL; 2222 } 2223 2224 out_free_resp: 2225 iwl_free_resp(&cmd); 2226 return status; 2227 } 2228 2229 /* releases the MVM mutex */ 2230 static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm, 2231 struct ieee80211_vif *vif, 2232 struct iwl_wowlan_status_data *status) 2233 { 2234 int i; 2235 bool keep; 2236 struct iwl_mvm_sta *mvm_ap_sta; 2237 2238 if (!status) 2239 goto out_unlock; 2240 2241 IWL_DEBUG_WOWLAN(mvm, "wakeup reason 0x%x\n", 2242 status->wakeup_reasons); 2243 2244 /* still at hard-coded place 0 for D3 image */ 2245 mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, 0); 2246 if (!mvm_ap_sta) 2247 goto out_unlock; 2248 2249 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 2250 u16 seq = status->qos_seq_ctr[i]; 2251 /* firmware stores last-used value, we store next value */ 2252 seq += 0x10; 2253 mvm_ap_sta->tid_data[i].seq_number = seq; 2254 } 2255 2256 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000) { 2257 i = mvm->offload_tid; 2258 iwl_trans_set_q_ptrs(mvm->trans, 2259 mvm_ap_sta->tid_data[i].txq_id, 2260 mvm_ap_sta->tid_data[i].seq_number >> 4); 2261 } 2262 2263 /* now we have all the data we need, unlock to avoid mac80211 issues */ 2264 mutex_unlock(&mvm->mutex); 2265 2266 iwl_mvm_report_wakeup_reasons(mvm, vif, status); 2267 2268 keep = iwl_mvm_setup_connection_keep(mvm, vif, status); 2269 2270 return keep; 2271 2272 out_unlock: 2273 mutex_unlock(&mvm->mutex); 2274 return false; 2275 } 2276 2277 #define ND_QUERY_BUF_LEN (sizeof(struct iwl_scan_offload_profile_match) * \ 2278 IWL_SCAN_MAX_PROFILES) 2279 2280 struct iwl_mvm_nd_results { 2281 u32 matched_profiles; 2282 u8 matches[ND_QUERY_BUF_LEN]; 2283 }; 2284 2285 static int 2286 iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm, 2287 struct iwl_mvm_nd_results *results) 2288 { 2289 struct iwl_scan_offload_match_info *query; 2290 struct iwl_host_cmd cmd = { 2291 .id = SCAN_OFFLOAD_PROFILES_QUERY_CMD, 2292 .flags = CMD_WANT_SKB, 2293 }; 2294 int ret, len; 2295 size_t query_len, matches_len; 2296 int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw); 2297 2298 ret = iwl_mvm_send_cmd(mvm, &cmd); 2299 if (ret) { 2300 IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret); 2301 return ret; 2302 } 2303 2304 if (fw_has_api(&mvm->fw->ucode_capa, 2305 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2306 query_len = sizeof(struct iwl_scan_offload_match_info); 2307 matches_len = sizeof(struct iwl_scan_offload_profile_match) * 2308 max_profiles; 2309 } else { 2310 query_len = sizeof(struct iwl_scan_offload_profiles_query_v1); 2311 matches_len = sizeof(struct iwl_scan_offload_profile_match_v1) * 2312 max_profiles; 2313 } 2314 2315 len = iwl_rx_packet_payload_len(cmd.resp_pkt); 2316 if (len < query_len) { 2317 IWL_ERR(mvm, "Invalid scan offload profiles query response!\n"); 2318 ret = -EIO; 2319 goto out_free_resp; 2320 } 2321 2322 query = (void *)cmd.resp_pkt->data; 2323 2324 results->matched_profiles = le32_to_cpu(query->matched_profiles); 2325 memcpy(results->matches, query->matches, matches_len); 2326 2327 #ifdef CONFIG_IWLWIFI_DEBUGFS 2328 mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done); 2329 #endif 2330 2331 out_free_resp: 2332 iwl_free_resp(&cmd); 2333 return ret; 2334 } 2335 2336 static int iwl_mvm_query_num_match_chans(struct iwl_mvm *mvm, 2337 struct iwl_mvm_nd_results *results, 2338 int idx) 2339 { 2340 int n_chans = 0, i; 2341 2342 if (fw_has_api(&mvm->fw->ucode_capa, 2343 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2344 struct iwl_scan_offload_profile_match *matches = 2345 (void *)results->matches; 2346 2347 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; i++) 2348 n_chans += hweight8(matches[idx].matching_channels[i]); 2349 } else { 2350 struct iwl_scan_offload_profile_match_v1 *matches = 2351 (void *)results->matches; 2352 2353 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1; i++) 2354 n_chans += hweight8(matches[idx].matching_channels[i]); 2355 } 2356 2357 return n_chans; 2358 } 2359 2360 static void iwl_mvm_query_set_freqs(struct iwl_mvm *mvm, 2361 struct iwl_mvm_nd_results *results, 2362 struct cfg80211_wowlan_nd_match *match, 2363 int idx) 2364 { 2365 int i; 2366 2367 if (fw_has_api(&mvm->fw->ucode_capa, 2368 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2369 struct iwl_scan_offload_profile_match *matches = 2370 (void *)results->matches; 2371 2372 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; i++) 2373 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8))) 2374 match->channels[match->n_channels++] = 2375 mvm->nd_channels[i]->center_freq; 2376 } else { 2377 struct iwl_scan_offload_profile_match_v1 *matches = 2378 (void *)results->matches; 2379 2380 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1 * 8; i++) 2381 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8))) 2382 match->channels[match->n_channels++] = 2383 mvm->nd_channels[i]->center_freq; 2384 } 2385 } 2386 2387 /** 2388 * enum iwl_d3_notif - d3 notifications 2389 * @IWL_D3_NOTIF_WOWLAN_INFO: WOWLAN_INFO_NOTIF was received 2390 * @IWL_D3_NOTIF_WOWLAN_WAKE_PKT: WOWLAN_WAKE_PKT_NOTIF was received 2391 * @IWL_D3_NOTIF_PROT_OFFLOAD: PROT_OFFLOAD_NOTIF was received 2392 * @IWL_D3_ND_MATCH_INFO: OFFLOAD_MATCH_INFO_NOTIF was received 2393 * @IWL_D3_NOTIF_D3_END_NOTIF: D3_END_NOTIF was received 2394 */ 2395 enum iwl_d3_notif { 2396 IWL_D3_NOTIF_WOWLAN_INFO = BIT(0), 2397 IWL_D3_NOTIF_WOWLAN_WAKE_PKT = BIT(1), 2398 IWL_D3_NOTIF_PROT_OFFLOAD = BIT(2), 2399 IWL_D3_ND_MATCH_INFO = BIT(3), 2400 IWL_D3_NOTIF_D3_END_NOTIF = BIT(4) 2401 }; 2402 2403 /* manage d3 resume data */ 2404 struct iwl_d3_data { 2405 struct iwl_wowlan_status_data *status; 2406 bool test; 2407 u32 d3_end_flags; 2408 u32 notif_expected; /* bitmap - see &enum iwl_d3_notif */ 2409 u32 notif_received; /* bitmap - see &enum iwl_d3_notif */ 2410 struct iwl_mvm_nd_results *nd_results; 2411 bool nd_results_valid; 2412 }; 2413 2414 static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm, 2415 struct ieee80211_vif *vif, 2416 struct iwl_d3_data *d3_data) 2417 { 2418 struct cfg80211_wowlan_nd_info *net_detect = NULL; 2419 struct cfg80211_wowlan_wakeup wakeup = { 2420 .pattern_idx = -1, 2421 }; 2422 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; 2423 unsigned long matched_profiles; 2424 u32 reasons = 0; 2425 int i, n_matches, ret; 2426 2427 if (WARN_ON(!d3_data || !d3_data->status)) 2428 goto out; 2429 2430 reasons = d3_data->status->wakeup_reasons; 2431 2432 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 2433 wakeup.rfkill_release = true; 2434 2435 if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) 2436 goto out; 2437 2438 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2439 WOWLAN_INFO_NOTIFICATION, 0)) { 2440 IWL_INFO(mvm, "Query FW for ND results\n"); 2441 ret = iwl_mvm_netdetect_query_results(mvm, d3_data->nd_results); 2442 2443 } else { 2444 IWL_INFO(mvm, "Notification based ND results\n"); 2445 ret = d3_data->nd_results_valid ? 0 : -1; 2446 } 2447 2448 if (ret || !d3_data->nd_results->matched_profiles) { 2449 wakeup_report = NULL; 2450 goto out; 2451 } 2452 2453 matched_profiles = d3_data->nd_results->matched_profiles; 2454 if (mvm->n_nd_match_sets) { 2455 n_matches = hweight_long(matched_profiles); 2456 } else { 2457 IWL_ERR(mvm, "no net detect match information available\n"); 2458 n_matches = 0; 2459 } 2460 2461 net_detect = kzalloc(struct_size(net_detect, matches, n_matches), 2462 GFP_KERNEL); 2463 if (!net_detect || !n_matches) 2464 goto out_report_nd; 2465 2466 for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) { 2467 struct cfg80211_wowlan_nd_match *match; 2468 int idx, n_channels = 0; 2469 2470 n_channels = iwl_mvm_query_num_match_chans(mvm, 2471 d3_data->nd_results, 2472 i); 2473 2474 match = kzalloc(struct_size(match, channels, n_channels), 2475 GFP_KERNEL); 2476 if (!match) 2477 goto out_report_nd; 2478 2479 net_detect->matches[net_detect->n_matches++] = match; 2480 2481 /* We inverted the order of the SSIDs in the scan 2482 * request, so invert the index here. 2483 */ 2484 idx = mvm->n_nd_match_sets - i - 1; 2485 match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len; 2486 memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid, 2487 match->ssid.ssid_len); 2488 2489 if (mvm->n_nd_channels < n_channels) 2490 continue; 2491 2492 iwl_mvm_query_set_freqs(mvm, d3_data->nd_results, match, i); 2493 } 2494 2495 out_report_nd: 2496 wakeup.net_detect = net_detect; 2497 out: 2498 iwl_mvm_free_nd(mvm); 2499 2500 mutex_unlock(&mvm->mutex); 2501 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); 2502 2503 if (net_detect) { 2504 for (i = 0; i < net_detect->n_matches; i++) 2505 kfree(net_detect->matches[i]); 2506 kfree(net_detect); 2507 } 2508 } 2509 2510 static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac, 2511 struct ieee80211_vif *vif) 2512 { 2513 /* skip the one we keep connection on */ 2514 if (data == vif) 2515 return; 2516 2517 if (vif->type == NL80211_IFTYPE_STATION) 2518 ieee80211_resume_disconnect(vif); 2519 } 2520 2521 static bool iwl_mvm_rt_status(struct iwl_trans *trans, u32 base, u32 *err_id) 2522 { 2523 struct error_table_start { 2524 /* cf. struct iwl_error_event_table */ 2525 u32 valid; 2526 __le32 err_id; 2527 } err_info; 2528 2529 if (!base) 2530 return false; 2531 2532 iwl_trans_read_mem_bytes(trans, base, 2533 &err_info, sizeof(err_info)); 2534 if (err_info.valid && err_id) 2535 *err_id = le32_to_cpu(err_info.err_id); 2536 2537 return !!err_info.valid; 2538 } 2539 2540 static bool iwl_mvm_check_rt_status(struct iwl_mvm *mvm, 2541 struct ieee80211_vif *vif) 2542 { 2543 u32 err_id; 2544 2545 /* check for lmac1 error */ 2546 if (iwl_mvm_rt_status(mvm->trans, 2547 mvm->trans->dbg.lmac_error_event_table[0], 2548 &err_id)) { 2549 if (err_id == RF_KILL_INDICATOR_FOR_WOWLAN) { 2550 struct cfg80211_wowlan_wakeup wakeup = { 2551 .rfkill_release = true, 2552 }; 2553 ieee80211_report_wowlan_wakeup(vif, &wakeup, 2554 GFP_KERNEL); 2555 } 2556 return true; 2557 } 2558 2559 /* check if we have lmac2 set and check for error */ 2560 if (iwl_mvm_rt_status(mvm->trans, 2561 mvm->trans->dbg.lmac_error_event_table[1], NULL)) 2562 return true; 2563 2564 /* check for umac error */ 2565 if (iwl_mvm_rt_status(mvm->trans, 2566 mvm->trans->dbg.umac_error_event_table, NULL)) 2567 return true; 2568 2569 return false; 2570 } 2571 2572 /* 2573 * This function assumes: 2574 * 1. The mutex is already held. 2575 * 2. The callee functions unlock the mutex. 2576 */ 2577 static bool 2578 iwl_mvm_choose_query_wakeup_reasons(struct iwl_mvm *mvm, 2579 struct ieee80211_vif *vif, 2580 struct iwl_d3_data *d3_data) 2581 { 2582 lockdep_assert_held(&mvm->mutex); 2583 2584 /* if FW uses status notification, status shouldn't be NULL here */ 2585 if (!d3_data->status) { 2586 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2587 u8 sta_id = mvm->net_detect ? IWL_MVM_INVALID_STA : 2588 mvmvif->deflink.ap_sta_id; 2589 2590 d3_data->status = iwl_mvm_send_wowlan_get_status(mvm, sta_id); 2591 } 2592 2593 if (mvm->net_detect) { 2594 iwl_mvm_query_netdetect_reasons(mvm, vif, d3_data); 2595 } else { 2596 bool keep = iwl_mvm_query_wakeup_reasons(mvm, vif, 2597 d3_data->status); 2598 2599 #ifdef CONFIG_IWLWIFI_DEBUGFS 2600 if (keep) 2601 mvm->keep_vif = vif; 2602 #endif 2603 2604 return keep; 2605 } 2606 return false; 2607 } 2608 2609 #define IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT (IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET | \ 2610 IWL_WOWLAN_WAKEUP_BY_PATTERN | \ 2611 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN |\ 2612 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN_WILDCARD |\ 2613 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN |\ 2614 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN_WILDCARD) 2615 2616 static int iwl_mvm_wowlan_store_wake_pkt(struct iwl_mvm *mvm, 2617 struct iwl_wowlan_wake_pkt_notif *notif, 2618 struct iwl_wowlan_status_data *status, 2619 u32 len) 2620 { 2621 u32 data_size, packet_len = le32_to_cpu(notif->wake_packet_length); 2622 2623 if (len < sizeof(*notif)) { 2624 IWL_ERR(mvm, "Invalid WoWLAN wake packet notification!\n"); 2625 return -EIO; 2626 } 2627 2628 if (WARN_ON(!status)) { 2629 IWL_ERR(mvm, "Got wake packet notification but wowlan status data is NULL\n"); 2630 return -EIO; 2631 } 2632 2633 if (WARN_ON(!(status->wakeup_reasons & 2634 IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT))) { 2635 IWL_ERR(mvm, "Got wakeup packet but wakeup reason is %x\n", 2636 status->wakeup_reasons); 2637 return -EIO; 2638 } 2639 2640 data_size = len - offsetof(struct iwl_wowlan_wake_pkt_notif, wake_packet); 2641 2642 /* data_size got the padding from the notification, remove it. */ 2643 if (packet_len < data_size) 2644 data_size = packet_len; 2645 2646 status->wake_packet = kmemdup(notif->wake_packet, data_size, 2647 GFP_ATOMIC); 2648 2649 if (!status->wake_packet) 2650 return -ENOMEM; 2651 2652 status->wake_packet_length = packet_len; 2653 status->wake_packet_bufsize = data_size; 2654 2655 return 0; 2656 } 2657 2658 static void iwl_mvm_nd_match_info_handler(struct iwl_mvm *mvm, 2659 struct iwl_d3_data *d3_data, 2660 struct iwl_scan_offload_match_info *notif, 2661 u32 len) 2662 { 2663 struct iwl_wowlan_status_data *status = d3_data->status; 2664 struct ieee80211_vif *vif = iwl_mvm_get_bss_vif(mvm); 2665 struct iwl_mvm_nd_results *results = d3_data->nd_results; 2666 size_t i, matches_len = sizeof(struct iwl_scan_offload_profile_match) * 2667 iwl_umac_scan_get_max_profiles(mvm->fw); 2668 2669 if (IS_ERR_OR_NULL(vif)) 2670 return; 2671 2672 if (len < sizeof(struct iwl_scan_offload_match_info)) { 2673 IWL_ERR(mvm, "Invalid scan match info notification\n"); 2674 return; 2675 } 2676 2677 if (!mvm->net_detect) { 2678 IWL_ERR(mvm, "Unexpected scan match info notification\n"); 2679 return; 2680 } 2681 2682 if (!status || status->wakeup_reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) { 2683 IWL_ERR(mvm, 2684 "Ignore scan match info notification: no reason\n"); 2685 return; 2686 } 2687 2688 #ifdef CONFIG_IWLWIFI_DEBUGFS 2689 mvm->last_netdetect_scans = le32_to_cpu(notif->n_scans_done); 2690 #endif 2691 2692 results->matched_profiles = le32_to_cpu(notif->matched_profiles); 2693 IWL_INFO(mvm, "number of matched profiles=%u\n", 2694 results->matched_profiles); 2695 2696 if (results->matched_profiles) { 2697 memcpy(results->matches, notif->matches, matches_len); 2698 d3_data->nd_results_valid = TRUE; 2699 } 2700 2701 /* no scan should be active at this point */ 2702 mvm->scan_status = 0; 2703 for (i = 0; i < mvm->max_scans; i++) 2704 mvm->scan_uid_status[i] = 0; 2705 } 2706 2707 static bool iwl_mvm_wait_d3_notif(struct iwl_notif_wait_data *notif_wait, 2708 struct iwl_rx_packet *pkt, void *data) 2709 { 2710 struct iwl_mvm *mvm = 2711 container_of(notif_wait, struct iwl_mvm, notif_wait); 2712 struct iwl_d3_data *d3_data = data; 2713 u32 len; 2714 int ret; 2715 int wowlan_info_ver = iwl_fw_lookup_notif_ver(mvm->fw, 2716 PROT_OFFLOAD_GROUP, 2717 WOWLAN_INFO_NOTIFICATION, 2718 IWL_FW_CMD_VER_UNKNOWN); 2719 2720 2721 switch (WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) { 2722 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION): { 2723 struct iwl_wowlan_info_notif *notif; 2724 2725 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_INFO) { 2726 /* We might get two notifications due to dual bss */ 2727 IWL_DEBUG_WOWLAN(mvm, 2728 "Got additional wowlan info notification\n"); 2729 break; 2730 } 2731 2732 if (wowlan_info_ver < 2) { 2733 struct iwl_wowlan_info_notif_v1 *notif_v1 = (void *)pkt->data; 2734 2735 notif = kmemdup(notif_v1, 2736 offsetofend(struct iwl_wowlan_info_notif, 2737 received_beacons), 2738 GFP_ATOMIC); 2739 2740 if (!notif) 2741 return false; 2742 2743 notif->tid_tear_down = notif_v1->tid_tear_down; 2744 notif->station_id = notif_v1->station_id; 2745 2746 } else { 2747 notif = (void *)pkt->data; 2748 } 2749 2750 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_INFO; 2751 len = iwl_rx_packet_payload_len(pkt); 2752 iwl_mvm_parse_wowlan_info_notif(mvm, notif, d3_data->status, 2753 len); 2754 2755 if (wowlan_info_ver < 2) 2756 kfree(notif); 2757 2758 if (d3_data->status && 2759 d3_data->status->wakeup_reasons & IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT) 2760 /* We are supposed to get also wake packet notif */ 2761 d3_data->notif_expected |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT; 2762 2763 break; 2764 } 2765 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION): { 2766 struct iwl_wowlan_wake_pkt_notif *notif = (void *)pkt->data; 2767 2768 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_WAKE_PKT) { 2769 /* We shouldn't get two wake packet notifications */ 2770 IWL_ERR(mvm, 2771 "Got additional wowlan wake packet notification\n"); 2772 } else { 2773 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT; 2774 len = iwl_rx_packet_payload_len(pkt); 2775 ret = iwl_mvm_wowlan_store_wake_pkt(mvm, notif, 2776 d3_data->status, 2777 len); 2778 if (ret) 2779 IWL_ERR(mvm, 2780 "Can't parse WOWLAN_WAKE_PKT_NOTIFICATION\n"); 2781 } 2782 2783 break; 2784 } 2785 case WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF): { 2786 struct iwl_scan_offload_match_info *notif = (void *)pkt->data; 2787 2788 if (d3_data->notif_received & IWL_D3_ND_MATCH_INFO) { 2789 IWL_ERR(mvm, 2790 "Got additional netdetect match info\n"); 2791 break; 2792 } 2793 2794 d3_data->notif_received |= IWL_D3_ND_MATCH_INFO; 2795 2796 /* explicitly set this in the 'expected' as well */ 2797 d3_data->notif_expected |= IWL_D3_ND_MATCH_INFO; 2798 2799 len = iwl_rx_packet_payload_len(pkt); 2800 iwl_mvm_nd_match_info_handler(mvm, d3_data, notif, len); 2801 break; 2802 } 2803 case WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION): { 2804 struct iwl_mvm_d3_end_notif *notif = (void *)pkt->data; 2805 2806 d3_data->d3_end_flags = __le32_to_cpu(notif->flags); 2807 d3_data->notif_received |= IWL_D3_NOTIF_D3_END_NOTIF; 2808 2809 break; 2810 } 2811 default: 2812 WARN_ON(1); 2813 } 2814 2815 return d3_data->notif_received == d3_data->notif_expected; 2816 } 2817 2818 static int iwl_mvm_resume_firmware(struct iwl_mvm *mvm, bool test) 2819 { 2820 int ret; 2821 enum iwl_d3_status d3_status; 2822 struct iwl_host_cmd cmd = { 2823 .id = D0I3_END_CMD, 2824 .flags = CMD_WANT_SKB | CMD_SEND_IN_D3, 2825 }; 2826 bool reset = fw_has_capa(&mvm->fw->ucode_capa, 2827 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 2828 2829 ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, !reset); 2830 if (ret) 2831 return ret; 2832 2833 if (d3_status != IWL_D3_STATUS_ALIVE) { 2834 IWL_INFO(mvm, "Device was reset during suspend\n"); 2835 return -ENOENT; 2836 } 2837 2838 /* 2839 * We should trigger resume flow using command only for 22000 family 2840 * AX210 and above don't need the command since they have 2841 * the doorbell interrupt. 2842 */ 2843 if (mvm->trans->trans_cfg->device_family <= IWL_DEVICE_FAMILY_22000 && 2844 fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_D0I3_END_FIRST)) { 2845 ret = iwl_mvm_send_cmd(mvm, &cmd); 2846 if (ret < 0) 2847 IWL_ERR(mvm, "Failed to send D0I3_END_CMD first (%d)\n", 2848 ret); 2849 } 2850 2851 return ret; 2852 } 2853 2854 #define IWL_MVM_D3_NOTIF_TIMEOUT (HZ / 5) 2855 2856 static int iwl_mvm_d3_notif_wait(struct iwl_mvm *mvm, 2857 struct iwl_d3_data *d3_data) 2858 { 2859 static const u16 d3_resume_notif[] = { 2860 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION), 2861 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION), 2862 WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF), 2863 WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION) 2864 }; 2865 struct iwl_notification_wait wait_d3_notif; 2866 int ret; 2867 2868 iwl_init_notification_wait(&mvm->notif_wait, &wait_d3_notif, 2869 d3_resume_notif, ARRAY_SIZE(d3_resume_notif), 2870 iwl_mvm_wait_d3_notif, d3_data); 2871 2872 ret = iwl_mvm_resume_firmware(mvm, d3_data->test); 2873 if (ret) { 2874 iwl_remove_notification(&mvm->notif_wait, &wait_d3_notif); 2875 return ret; 2876 } 2877 2878 return iwl_wait_notification(&mvm->notif_wait, &wait_d3_notif, 2879 IWL_MVM_D3_NOTIF_TIMEOUT); 2880 } 2881 2882 static inline bool iwl_mvm_d3_resume_notif_based(struct iwl_mvm *mvm) 2883 { 2884 return iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2885 WOWLAN_INFO_NOTIFICATION, 0) && 2886 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2887 WOWLAN_WAKE_PKT_NOTIFICATION, 0) && 2888 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2889 D3_END_NOTIFICATION, 0); 2890 } 2891 2892 static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test) 2893 { 2894 struct ieee80211_vif *vif = NULL; 2895 int ret = 1; 2896 struct iwl_mvm_nd_results results = {}; 2897 struct iwl_d3_data d3_data = { 2898 .test = test, 2899 .notif_expected = 2900 IWL_D3_NOTIF_WOWLAN_INFO | 2901 IWL_D3_NOTIF_D3_END_NOTIF, 2902 .nd_results_valid = false, 2903 .nd_results = &results, 2904 }; 2905 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 2906 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 2907 bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa, 2908 IWL_UCODE_TLV_CAPA_D0I3_END_FIRST); 2909 bool resume_notif_based = iwl_mvm_d3_resume_notif_based(mvm); 2910 bool keep = false; 2911 2912 mutex_lock(&mvm->mutex); 2913 2914 mvm->last_reset_or_resume_time_jiffies = jiffies; 2915 2916 /* get the BSS vif pointer again */ 2917 vif = iwl_mvm_get_bss_vif(mvm); 2918 if (IS_ERR_OR_NULL(vif)) 2919 goto err; 2920 2921 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt); 2922 2923 if (iwl_mvm_check_rt_status(mvm, vif)) { 2924 set_bit(STATUS_FW_ERROR, &mvm->trans->status); 2925 iwl_mvm_dump_nic_error_log(mvm); 2926 iwl_dbg_tlv_time_point(&mvm->fwrt, 2927 IWL_FW_INI_TIME_POINT_FW_ASSERT, NULL); 2928 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert, 2929 false, 0); 2930 ret = 1; 2931 goto err; 2932 } 2933 2934 if (resume_notif_based) { 2935 d3_data.status = kzalloc(sizeof(*d3_data.status), GFP_KERNEL); 2936 if (!d3_data.status) { 2937 IWL_ERR(mvm, "Failed to allocate wowlan status\n"); 2938 ret = -ENOMEM; 2939 goto err; 2940 } 2941 2942 ret = iwl_mvm_d3_notif_wait(mvm, &d3_data); 2943 if (ret) 2944 goto err; 2945 } else { 2946 ret = iwl_mvm_resume_firmware(mvm, test); 2947 if (ret < 0) 2948 goto err; 2949 } 2950 2951 /* after the successful handshake, we're out of D3 */ 2952 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED; 2953 2954 /* when reset is required we can't send these following commands */ 2955 if (d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE) 2956 goto query_wakeup_reasons; 2957 2958 /* 2959 * Query the current location and source from the D3 firmware so we 2960 * can play it back when we re-intiailize the D0 firmware 2961 */ 2962 iwl_mvm_update_changed_regdom(mvm); 2963 2964 /* Re-configure PPAG settings */ 2965 iwl_mvm_ppag_send_cmd(mvm); 2966 2967 if (!unified_image) 2968 /* Re-configure default SAR profile */ 2969 iwl_mvm_sar_select_profile(mvm, 1, 1); 2970 2971 if (mvm->net_detect && unified_image) { 2972 /* If this is a non-unified image, we restart the FW, 2973 * so no need to stop the netdetect scan. If that 2974 * fails, continue and try to get the wake-up reasons, 2975 * but trigger a HW restart by keeping a failure code 2976 * in ret. 2977 */ 2978 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT, 2979 false); 2980 } 2981 2982 query_wakeup_reasons: 2983 keep = iwl_mvm_choose_query_wakeup_reasons(mvm, vif, &d3_data); 2984 /* has unlocked the mutex, so skip that */ 2985 goto out; 2986 2987 err: 2988 mutex_unlock(&mvm->mutex); 2989 out: 2990 if (d3_data.status) 2991 kfree(d3_data.status->wake_packet); 2992 kfree(d3_data.status); 2993 iwl_mvm_free_nd(mvm); 2994 2995 if (!d3_data.test && !mvm->net_detect) 2996 ieee80211_iterate_active_interfaces_mtx(mvm->hw, 2997 IEEE80211_IFACE_ITER_NORMAL, 2998 iwl_mvm_d3_disconnect_iter, 2999 keep ? vif : NULL); 3000 3001 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 3002 3003 /* no need to reset the device in unified images, if successful */ 3004 if (unified_image && !ret) { 3005 /* nothing else to do if we already sent D0I3_END_CMD */ 3006 if (d0i3_first) 3007 return 0; 3008 3009 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3010 D3_END_NOTIFICATION, 0)) { 3011 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL); 3012 if (!ret) 3013 return 0; 3014 } else if (!(d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)) { 3015 return 0; 3016 } 3017 } 3018 3019 /* 3020 * Reconfigure the device in one of the following cases: 3021 * 1. We are not using a unified image 3022 * 2. We are using a unified image but had an error while exiting D3 3023 */ 3024 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); 3025 3026 /* regardless of what happened, we're now out of D3 */ 3027 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED; 3028 3029 return 1; 3030 } 3031 3032 int iwl_mvm_resume(struct ieee80211_hw *hw) 3033 { 3034 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3035 int ret; 3036 3037 ret = __iwl_mvm_resume(mvm, false); 3038 3039 iwl_mvm_resume_tcm(mvm); 3040 3041 iwl_fw_runtime_resume(&mvm->fwrt); 3042 3043 return ret; 3044 } 3045 3046 void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled) 3047 { 3048 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3049 3050 device_set_wakeup_enable(mvm->trans->dev, enabled); 3051 } 3052 3053 #ifdef CONFIG_IWLWIFI_DEBUGFS 3054 static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file) 3055 { 3056 struct iwl_mvm *mvm = inode->i_private; 3057 int err; 3058 3059 if (mvm->d3_test_active) 3060 return -EBUSY; 3061 3062 file->private_data = inode->i_private; 3063 3064 iwl_mvm_pause_tcm(mvm, true); 3065 3066 iwl_fw_runtime_suspend(&mvm->fwrt); 3067 3068 /* start pseudo D3 */ 3069 rtnl_lock(); 3070 wiphy_lock(mvm->hw->wiphy); 3071 err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true); 3072 wiphy_unlock(mvm->hw->wiphy); 3073 rtnl_unlock(); 3074 if (err > 0) 3075 err = -EINVAL; 3076 if (err) 3077 return err; 3078 3079 mvm->d3_test_active = true; 3080 mvm->keep_vif = NULL; 3081 return 0; 3082 } 3083 3084 static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf, 3085 size_t count, loff_t *ppos) 3086 { 3087 struct iwl_mvm *mvm = file->private_data; 3088 u32 pme_asserted; 3089 3090 while (true) { 3091 /* read pme_ptr if available */ 3092 if (mvm->d3_test_pme_ptr) { 3093 pme_asserted = iwl_trans_read_mem32(mvm->trans, 3094 mvm->d3_test_pme_ptr); 3095 if (pme_asserted) 3096 break; 3097 } 3098 3099 if (msleep_interruptible(100)) 3100 break; 3101 } 3102 3103 return 0; 3104 } 3105 3106 static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac, 3107 struct ieee80211_vif *vif) 3108 { 3109 /* skip the one we keep connection on */ 3110 if (_data == vif) 3111 return; 3112 3113 if (vif->type == NL80211_IFTYPE_STATION) 3114 ieee80211_connection_loss(vif); 3115 } 3116 3117 static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file) 3118 { 3119 struct iwl_mvm *mvm = inode->i_private; 3120 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 3121 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 3122 3123 mvm->d3_test_active = false; 3124 3125 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt); 3126 3127 rtnl_lock(); 3128 wiphy_lock(mvm->hw->wiphy); 3129 __iwl_mvm_resume(mvm, true); 3130 wiphy_unlock(mvm->hw->wiphy); 3131 rtnl_unlock(); 3132 3133 iwl_mvm_resume_tcm(mvm); 3134 3135 iwl_fw_runtime_resume(&mvm->fwrt); 3136 3137 iwl_abort_notification_waits(&mvm->notif_wait); 3138 if (!unified_image) { 3139 int remaining_time = 10; 3140 3141 ieee80211_restart_hw(mvm->hw); 3142 3143 /* wait for restart and disconnect all interfaces */ 3144 while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 3145 remaining_time > 0) { 3146 remaining_time--; 3147 msleep(1000); 3148 } 3149 3150 if (remaining_time == 0) 3151 IWL_ERR(mvm, "Timed out waiting for HW restart!\n"); 3152 } 3153 3154 ieee80211_iterate_active_interfaces_atomic( 3155 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 3156 iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif); 3157 3158 return 0; 3159 } 3160 3161 const struct file_operations iwl_dbgfs_d3_test_ops = { 3162 .llseek = no_llseek, 3163 .open = iwl_mvm_d3_test_open, 3164 .read = iwl_mvm_d3_test_read, 3165 .release = iwl_mvm_d3_test_release, 3166 }; 3167 #endif 3168