1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2014, 2018-2023 Intel Corporation 4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH 5 * Copyright (C) 2016-2017 Intel Deutschland GmbH 6 */ 7 #include <linux/etherdevice.h> 8 #include <linux/ip.h> 9 #include <linux/fs.h> 10 #include <net/cfg80211.h> 11 #include <net/ipv6.h> 12 #include <net/tcp.h> 13 #include <net/addrconf.h> 14 #include "iwl-modparams.h" 15 #include "fw-api.h" 16 #include "mvm.h" 17 #include "fw/img.h" 18 19 void iwl_mvm_set_rekey_data(struct ieee80211_hw *hw, 20 struct ieee80211_vif *vif, 21 struct cfg80211_gtk_rekey_data *data) 22 { 23 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 24 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 25 26 mutex_lock(&mvm->mutex); 27 28 mvmvif->rekey_data.kek_len = data->kek_len; 29 mvmvif->rekey_data.kck_len = data->kck_len; 30 memcpy(mvmvif->rekey_data.kek, data->kek, data->kek_len); 31 memcpy(mvmvif->rekey_data.kck, data->kck, data->kck_len); 32 mvmvif->rekey_data.akm = data->akm & 0xFF; 33 mvmvif->rekey_data.replay_ctr = 34 cpu_to_le64(be64_to_cpup((const __be64 *)data->replay_ctr)); 35 mvmvif->rekey_data.valid = true; 36 37 mutex_unlock(&mvm->mutex); 38 } 39 40 #if IS_ENABLED(CONFIG_IPV6) 41 void iwl_mvm_ipv6_addr_change(struct ieee80211_hw *hw, 42 struct ieee80211_vif *vif, 43 struct inet6_dev *idev) 44 { 45 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 46 struct inet6_ifaddr *ifa; 47 int idx = 0; 48 49 memset(mvmvif->tentative_addrs, 0, sizeof(mvmvif->tentative_addrs)); 50 51 read_lock_bh(&idev->lock); 52 list_for_each_entry(ifa, &idev->addr_list, if_list) { 53 mvmvif->target_ipv6_addrs[idx] = ifa->addr; 54 if (ifa->flags & IFA_F_TENTATIVE) 55 __set_bit(idx, mvmvif->tentative_addrs); 56 idx++; 57 if (idx >= IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_MAX) 58 break; 59 } 60 read_unlock_bh(&idev->lock); 61 62 mvmvif->num_target_ipv6_addrs = idx; 63 } 64 #endif 65 66 void iwl_mvm_set_default_unicast_key(struct ieee80211_hw *hw, 67 struct ieee80211_vif *vif, int idx) 68 { 69 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 70 71 mvmvif->tx_key_idx = idx; 72 } 73 74 static void iwl_mvm_convert_p1k(u16 *p1k, __le16 *out) 75 { 76 int i; 77 78 for (i = 0; i < IWL_P1K_SIZE; i++) 79 out[i] = cpu_to_le16(p1k[i]); 80 } 81 82 static const u8 *iwl_mvm_find_max_pn(struct ieee80211_key_conf *key, 83 struct iwl_mvm_key_pn *ptk_pn, 84 struct ieee80211_key_seq *seq, 85 int tid, int queues) 86 { 87 const u8 *ret = seq->ccmp.pn; 88 int i; 89 90 /* get the PN from mac80211, used on the default queue */ 91 ieee80211_get_key_rx_seq(key, tid, seq); 92 93 /* and use the internal data for the other queues */ 94 for (i = 1; i < queues; i++) { 95 const u8 *tmp = ptk_pn->q[i].pn[tid]; 96 97 if (memcmp(ret, tmp, IEEE80211_CCMP_PN_LEN) <= 0) 98 ret = tmp; 99 } 100 101 return ret; 102 } 103 104 struct wowlan_key_reprogram_data { 105 bool error; 106 int wep_key_idx; 107 }; 108 109 static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw, 110 struct ieee80211_vif *vif, 111 struct ieee80211_sta *sta, 112 struct ieee80211_key_conf *key, 113 void *_data) 114 { 115 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 116 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 117 struct wowlan_key_reprogram_data *data = _data; 118 int ret; 119 120 switch (key->cipher) { 121 case WLAN_CIPHER_SUITE_WEP40: 122 case WLAN_CIPHER_SUITE_WEP104: { /* hack it for now */ 123 struct { 124 struct iwl_mvm_wep_key_cmd wep_key_cmd; 125 struct iwl_mvm_wep_key wep_key; 126 } __packed wkc = { 127 .wep_key_cmd.mac_id_n_color = 128 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 129 mvmvif->color)), 130 .wep_key_cmd.num_keys = 1, 131 /* firmware sets STA_KEY_FLG_WEP_13BYTES */ 132 .wep_key_cmd.decryption_type = STA_KEY_FLG_WEP, 133 .wep_key.key_index = key->keyidx, 134 .wep_key.key_size = key->keylen, 135 }; 136 137 /* 138 * This will fail -- the key functions don't set support 139 * pairwise WEP keys. However, that's better than silently 140 * failing WoWLAN. Or maybe not? 141 */ 142 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) 143 break; 144 145 memcpy(&wkc.wep_key.key[3], key->key, key->keylen); 146 if (key->keyidx == mvmvif->tx_key_idx) { 147 /* TX key must be at offset 0 */ 148 wkc.wep_key.key_offset = 0; 149 } else { 150 /* others start at 1 */ 151 data->wep_key_idx++; 152 wkc.wep_key.key_offset = data->wep_key_idx; 153 } 154 155 mutex_lock(&mvm->mutex); 156 ret = iwl_mvm_send_cmd_pdu(mvm, WEP_KEY, 0, sizeof(wkc), &wkc); 157 data->error = ret != 0; 158 159 mvm->ptk_ivlen = key->iv_len; 160 mvm->ptk_icvlen = key->icv_len; 161 mvm->gtk_ivlen = key->iv_len; 162 mvm->gtk_icvlen = key->icv_len; 163 mutex_unlock(&mvm->mutex); 164 165 /* don't upload key again */ 166 return; 167 } 168 default: 169 data->error = true; 170 return; 171 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 172 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 173 return; 174 case WLAN_CIPHER_SUITE_AES_CMAC: 175 /* 176 * Ignore CMAC keys -- the WoWLAN firmware doesn't support them 177 * but we also shouldn't abort suspend due to that. It does have 178 * support for the IGTK key renewal, but doesn't really use the 179 * IGTK for anything. This means we could spuriously wake up or 180 * be deauthenticated, but that was considered acceptable. 181 */ 182 return; 183 case WLAN_CIPHER_SUITE_TKIP: 184 case WLAN_CIPHER_SUITE_CCMP: 185 case WLAN_CIPHER_SUITE_GCMP: 186 case WLAN_CIPHER_SUITE_GCMP_256: 187 break; 188 } 189 190 mutex_lock(&mvm->mutex); 191 /* 192 * The D3 firmware hardcodes the key offset 0 as the key it 193 * uses to transmit packets to the AP, i.e. the PTK. 194 */ 195 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) { 196 mvm->ptk_ivlen = key->iv_len; 197 mvm->ptk_icvlen = key->icv_len; 198 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 0); 199 } else { 200 /* 201 * firmware only supports TSC/RSC for a single key, 202 * so if there are multiple keep overwriting them 203 * with new ones -- this relies on mac80211 doing 204 * list_add_tail(). 205 */ 206 mvm->gtk_ivlen = key->iv_len; 207 mvm->gtk_icvlen = key->icv_len; 208 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 1); 209 } 210 mutex_unlock(&mvm->mutex); 211 data->error = ret != 0; 212 } 213 214 struct wowlan_key_rsc_tsc_data { 215 struct iwl_wowlan_rsc_tsc_params_cmd_v4 *rsc_tsc; 216 bool have_rsc_tsc; 217 }; 218 219 static void iwl_mvm_wowlan_get_rsc_tsc_data(struct ieee80211_hw *hw, 220 struct ieee80211_vif *vif, 221 struct ieee80211_sta *sta, 222 struct ieee80211_key_conf *key, 223 void *_data) 224 { 225 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 226 struct wowlan_key_rsc_tsc_data *data = _data; 227 struct aes_sc *aes_sc; 228 struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL; 229 struct ieee80211_key_seq seq; 230 int i; 231 232 switch (key->cipher) { 233 default: 234 break; 235 case WLAN_CIPHER_SUITE_TKIP: 236 if (sta) { 237 u64 pn64; 238 239 tkip_sc = 240 data->rsc_tsc->params.all_tsc_rsc.tkip.unicast_rsc; 241 tkip_tx_sc = 242 &data->rsc_tsc->params.all_tsc_rsc.tkip.tsc; 243 244 pn64 = atomic64_read(&key->tx_pn); 245 tkip_tx_sc->iv16 = cpu_to_le16(TKIP_PN_TO_IV16(pn64)); 246 tkip_tx_sc->iv32 = cpu_to_le32(TKIP_PN_TO_IV32(pn64)); 247 } else { 248 tkip_sc = 249 data->rsc_tsc->params.all_tsc_rsc.tkip.multicast_rsc; 250 } 251 252 /* 253 * For non-QoS this relies on the fact that both the uCode and 254 * mac80211 use TID 0 (as they need to to avoid replay attacks) 255 * for checking the IV in the frames. 256 */ 257 for (i = 0; i < IWL_NUM_RSC; i++) { 258 ieee80211_get_key_rx_seq(key, i, &seq); 259 tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16); 260 tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32); 261 } 262 263 data->have_rsc_tsc = true; 264 break; 265 case WLAN_CIPHER_SUITE_CCMP: 266 case WLAN_CIPHER_SUITE_GCMP: 267 case WLAN_CIPHER_SUITE_GCMP_256: 268 if (sta) { 269 struct aes_sc *aes_tx_sc; 270 u64 pn64; 271 272 aes_sc = 273 data->rsc_tsc->params.all_tsc_rsc.aes.unicast_rsc; 274 aes_tx_sc = 275 &data->rsc_tsc->params.all_tsc_rsc.aes.tsc; 276 277 pn64 = atomic64_read(&key->tx_pn); 278 aes_tx_sc->pn = cpu_to_le64(pn64); 279 } else { 280 aes_sc = 281 data->rsc_tsc->params.all_tsc_rsc.aes.multicast_rsc; 282 } 283 284 /* 285 * For non-QoS this relies on the fact that both the uCode and 286 * mac80211/our RX code use TID 0 for checking the PN. 287 */ 288 if (sta && iwl_mvm_has_new_rx_api(mvm)) { 289 struct iwl_mvm_sta *mvmsta; 290 struct iwl_mvm_key_pn *ptk_pn; 291 const u8 *pn; 292 293 mvmsta = iwl_mvm_sta_from_mac80211(sta); 294 rcu_read_lock(); 295 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]); 296 if (WARN_ON(!ptk_pn)) { 297 rcu_read_unlock(); 298 break; 299 } 300 301 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 302 pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i, 303 mvm->trans->num_rx_queues); 304 aes_sc[i].pn = cpu_to_le64((u64)pn[5] | 305 ((u64)pn[4] << 8) | 306 ((u64)pn[3] << 16) | 307 ((u64)pn[2] << 24) | 308 ((u64)pn[1] << 32) | 309 ((u64)pn[0] << 40)); 310 } 311 312 rcu_read_unlock(); 313 } else { 314 for (i = 0; i < IWL_NUM_RSC; i++) { 315 u8 *pn = seq.ccmp.pn; 316 317 ieee80211_get_key_rx_seq(key, i, &seq); 318 aes_sc[i].pn = cpu_to_le64((u64)pn[5] | 319 ((u64)pn[4] << 8) | 320 ((u64)pn[3] << 16) | 321 ((u64)pn[2] << 24) | 322 ((u64)pn[1] << 32) | 323 ((u64)pn[0] << 40)); 324 } 325 } 326 data->have_rsc_tsc = true; 327 break; 328 } 329 } 330 331 struct wowlan_key_rsc_v5_data { 332 struct iwl_wowlan_rsc_tsc_params_cmd *rsc; 333 bool have_rsc; 334 int gtks; 335 int gtk_ids[4]; 336 }; 337 338 static void iwl_mvm_wowlan_get_rsc_v5_data(struct ieee80211_hw *hw, 339 struct ieee80211_vif *vif, 340 struct ieee80211_sta *sta, 341 struct ieee80211_key_conf *key, 342 void *_data) 343 { 344 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 345 struct wowlan_key_rsc_v5_data *data = _data; 346 struct ieee80211_key_seq seq; 347 __le64 *rsc; 348 int i; 349 350 /* only for ciphers that can be PTK/GTK */ 351 switch (key->cipher) { 352 default: 353 return; 354 case WLAN_CIPHER_SUITE_TKIP: 355 case WLAN_CIPHER_SUITE_CCMP: 356 case WLAN_CIPHER_SUITE_GCMP: 357 case WLAN_CIPHER_SUITE_GCMP_256: 358 break; 359 } 360 361 if (sta) { 362 rsc = data->rsc->ucast_rsc; 363 } else { 364 if (WARN_ON(data->gtks >= ARRAY_SIZE(data->gtk_ids))) 365 return; 366 data->gtk_ids[data->gtks] = key->keyidx; 367 rsc = data->rsc->mcast_rsc[data->gtks % 2]; 368 if (WARN_ON(key->keyidx >= 369 ARRAY_SIZE(data->rsc->mcast_key_id_map))) 370 return; 371 data->rsc->mcast_key_id_map[key->keyidx] = data->gtks % 2; 372 if (data->gtks >= 2) { 373 int prev = data->gtks - 2; 374 int prev_idx = data->gtk_ids[prev]; 375 376 data->rsc->mcast_key_id_map[prev_idx] = 377 IWL_MCAST_KEY_MAP_INVALID; 378 } 379 data->gtks++; 380 } 381 382 switch (key->cipher) { 383 default: 384 WARN_ON(1); 385 break; 386 case WLAN_CIPHER_SUITE_TKIP: 387 388 /* 389 * For non-QoS this relies on the fact that both the uCode and 390 * mac80211 use TID 0 (as they need to to avoid replay attacks) 391 * for checking the IV in the frames. 392 */ 393 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 394 ieee80211_get_key_rx_seq(key, i, &seq); 395 396 rsc[i] = cpu_to_le64(((u64)seq.tkip.iv32 << 16) | 397 seq.tkip.iv16); 398 } 399 400 data->have_rsc = true; 401 break; 402 case WLAN_CIPHER_SUITE_CCMP: 403 case WLAN_CIPHER_SUITE_GCMP: 404 case WLAN_CIPHER_SUITE_GCMP_256: 405 /* 406 * For non-QoS this relies on the fact that both the uCode and 407 * mac80211/our RX code use TID 0 for checking the PN. 408 */ 409 if (sta) { 410 struct iwl_mvm_sta *mvmsta; 411 struct iwl_mvm_key_pn *ptk_pn; 412 const u8 *pn; 413 414 mvmsta = iwl_mvm_sta_from_mac80211(sta); 415 rcu_read_lock(); 416 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]); 417 if (WARN_ON(!ptk_pn)) { 418 rcu_read_unlock(); 419 break; 420 } 421 422 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 423 pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i, 424 mvm->trans->num_rx_queues); 425 rsc[i] = cpu_to_le64((u64)pn[5] | 426 ((u64)pn[4] << 8) | 427 ((u64)pn[3] << 16) | 428 ((u64)pn[2] << 24) | 429 ((u64)pn[1] << 32) | 430 ((u64)pn[0] << 40)); 431 } 432 433 rcu_read_unlock(); 434 } else { 435 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 436 u8 *pn = seq.ccmp.pn; 437 438 ieee80211_get_key_rx_seq(key, i, &seq); 439 rsc[i] = cpu_to_le64((u64)pn[5] | 440 ((u64)pn[4] << 8) | 441 ((u64)pn[3] << 16) | 442 ((u64)pn[2] << 24) | 443 ((u64)pn[1] << 32) | 444 ((u64)pn[0] << 40)); 445 } 446 } 447 data->have_rsc = true; 448 break; 449 } 450 } 451 452 static int iwl_mvm_wowlan_config_rsc_tsc(struct iwl_mvm *mvm, 453 struct ieee80211_vif *vif) 454 { 455 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 456 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TSC_RSC_PARAM, 457 IWL_FW_CMD_VER_UNKNOWN); 458 int ret; 459 460 if (ver == 5) { 461 struct wowlan_key_rsc_v5_data data = {}; 462 int i; 463 464 data.rsc = 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 struct iwl_multicast_key_data { 1384 u8 key[WOWLAN_KEY_MAX_SIZE]; 1385 u8 len; 1386 u8 flags; 1387 u8 id; 1388 u8 ipn[6]; 1389 }; 1390 1391 /* converted data from the different status responses */ 1392 struct iwl_wowlan_status_data { 1393 u64 replay_ctr; 1394 u32 num_of_gtk_rekeys; 1395 u32 received_beacons; 1396 u32 wakeup_reasons; 1397 u32 wake_packet_length; 1398 u32 wake_packet_bufsize; 1399 u16 pattern_number; 1400 u16 non_qos_seq_ctr; 1401 u16 qos_seq_ctr[8]; 1402 u8 tid_tear_down; 1403 1404 struct { 1405 /* including RX MIC key for TKIP */ 1406 u8 key[WOWLAN_KEY_MAX_SIZE]; 1407 u8 len; 1408 u8 flags; 1409 u8 id; 1410 } gtk[WOWLAN_GTK_KEYS_NUM]; 1411 1412 struct { 1413 /* 1414 * We store both the TKIP and AES representations 1415 * coming from the firmware because we decode the 1416 * data from there before we iterate the keys and 1417 * know which one we need. 1418 */ 1419 struct { 1420 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT]; 1421 } tkip, aes; 1422 1423 /* 1424 * We use -1 for when we have valid data but don't know 1425 * the key ID from firmware, and thus it needs to be 1426 * installed with the last key (depending on rekeying). 1427 */ 1428 s8 key_id; 1429 bool valid; 1430 } gtk_seq[2]; 1431 1432 struct { 1433 /* Same as above */ 1434 struct { 1435 struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT]; 1436 u64 tx_pn; 1437 } tkip, aes; 1438 } ptk; 1439 1440 struct iwl_multicast_key_data igtk; 1441 struct iwl_multicast_key_data bigtk[WOWLAN_BIGTK_KEYS_NUM]; 1442 1443 u8 *wake_packet; 1444 }; 1445 1446 static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm, 1447 struct ieee80211_vif *vif, 1448 struct iwl_wowlan_status_data *status) 1449 { 1450 struct sk_buff *pkt = NULL; 1451 struct cfg80211_wowlan_wakeup wakeup = { 1452 .pattern_idx = -1, 1453 }; 1454 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; 1455 u32 reasons = status->wakeup_reasons; 1456 1457 if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) { 1458 wakeup_report = NULL; 1459 goto report; 1460 } 1461 1462 pm_wakeup_event(mvm->dev, 0); 1463 1464 if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET) 1465 wakeup.magic_pkt = true; 1466 1467 if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN) 1468 wakeup.pattern_idx = 1469 status->pattern_number; 1470 1471 if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 1472 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)) 1473 wakeup.disconnect = true; 1474 1475 if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE) 1476 wakeup.gtk_rekey_failure = true; 1477 1478 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 1479 wakeup.rfkill_release = true; 1480 1481 if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST) 1482 wakeup.eap_identity_req = true; 1483 1484 if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE) 1485 wakeup.four_way_handshake = true; 1486 1487 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS) 1488 wakeup.tcp_connlost = true; 1489 1490 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE) 1491 wakeup.tcp_nomoretokens = true; 1492 1493 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET) 1494 wakeup.tcp_match = true; 1495 1496 if (status->wake_packet) { 1497 int pktsize = status->wake_packet_bufsize; 1498 int pktlen = status->wake_packet_length; 1499 const u8 *pktdata = status->wake_packet; 1500 const struct ieee80211_hdr *hdr = (const void *)pktdata; 1501 int truncated = pktlen - pktsize; 1502 1503 /* this would be a firmware bug */ 1504 if (WARN_ON_ONCE(truncated < 0)) 1505 truncated = 0; 1506 1507 if (ieee80211_is_data(hdr->frame_control)) { 1508 int hdrlen = ieee80211_hdrlen(hdr->frame_control); 1509 int ivlen = 0, icvlen = 4; /* also FCS */ 1510 1511 pkt = alloc_skb(pktsize, GFP_KERNEL); 1512 if (!pkt) 1513 goto report; 1514 1515 skb_put_data(pkt, pktdata, hdrlen); 1516 pktdata += hdrlen; 1517 pktsize -= hdrlen; 1518 1519 if (ieee80211_has_protected(hdr->frame_control)) { 1520 /* 1521 * This is unlocked and using gtk_i(c)vlen, 1522 * but since everything is under RTNL still 1523 * that's not really a problem - changing 1524 * it would be difficult. 1525 */ 1526 if (is_multicast_ether_addr(hdr->addr1)) { 1527 ivlen = mvm->gtk_ivlen; 1528 icvlen += mvm->gtk_icvlen; 1529 } else { 1530 ivlen = mvm->ptk_ivlen; 1531 icvlen += mvm->ptk_icvlen; 1532 } 1533 } 1534 1535 /* if truncated, FCS/ICV is (partially) gone */ 1536 if (truncated >= icvlen) { 1537 icvlen = 0; 1538 truncated -= icvlen; 1539 } else { 1540 icvlen -= truncated; 1541 truncated = 0; 1542 } 1543 1544 pktsize -= ivlen + icvlen; 1545 pktdata += ivlen; 1546 1547 skb_put_data(pkt, pktdata, pktsize); 1548 1549 if (ieee80211_data_to_8023(pkt, vif->addr, vif->type)) 1550 goto report; 1551 wakeup.packet = pkt->data; 1552 wakeup.packet_present_len = pkt->len; 1553 wakeup.packet_len = pkt->len - truncated; 1554 wakeup.packet_80211 = false; 1555 } else { 1556 int fcslen = 4; 1557 1558 if (truncated >= 4) { 1559 truncated -= 4; 1560 fcslen = 0; 1561 } else { 1562 fcslen -= truncated; 1563 truncated = 0; 1564 } 1565 pktsize -= fcslen; 1566 wakeup.packet = status->wake_packet; 1567 wakeup.packet_present_len = pktsize; 1568 wakeup.packet_len = pktlen - truncated; 1569 wakeup.packet_80211 = true; 1570 } 1571 } 1572 1573 report: 1574 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); 1575 kfree_skb(pkt); 1576 } 1577 1578 static void iwl_mvm_le64_to_aes_seq(__le64 le_pn, struct ieee80211_key_seq *seq) 1579 { 1580 u64 pn = le64_to_cpu(le_pn); 1581 1582 seq->ccmp.pn[0] = pn >> 40; 1583 seq->ccmp.pn[1] = pn >> 32; 1584 seq->ccmp.pn[2] = pn >> 24; 1585 seq->ccmp.pn[3] = pn >> 16; 1586 seq->ccmp.pn[4] = pn >> 8; 1587 seq->ccmp.pn[5] = pn; 1588 } 1589 1590 static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc, 1591 struct ieee80211_key_seq *seq) 1592 { 1593 iwl_mvm_le64_to_aes_seq(sc->pn, seq); 1594 } 1595 1596 static void iwl_mvm_le64_to_tkip_seq(__le64 le_pn, struct ieee80211_key_seq *seq) 1597 { 1598 u64 pn = le64_to_cpu(le_pn); 1599 1600 seq->tkip.iv16 = (u16)pn; 1601 seq->tkip.iv32 = (u32)(pn >> 16); 1602 } 1603 1604 static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc, 1605 struct ieee80211_key_seq *seq) 1606 { 1607 seq->tkip.iv32 = le32_to_cpu(sc->iv32); 1608 seq->tkip.iv16 = le16_to_cpu(sc->iv16); 1609 } 1610 1611 static void iwl_mvm_set_key_rx_seq_tids(struct ieee80211_key_conf *key, 1612 struct ieee80211_key_seq *seq) 1613 { 1614 int tid; 1615 1616 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) 1617 ieee80211_set_key_rx_seq(key, tid, &seq[tid]); 1618 } 1619 1620 static void iwl_mvm_set_aes_ptk_rx_seq(struct iwl_mvm *mvm, 1621 struct iwl_wowlan_status_data *status, 1622 struct ieee80211_sta *sta, 1623 struct ieee80211_key_conf *key) 1624 { 1625 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1626 struct iwl_mvm_key_pn *ptk_pn; 1627 int tid; 1628 1629 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.aes.seq); 1630 1631 if (!iwl_mvm_has_new_rx_api(mvm)) 1632 return; 1633 1634 1635 rcu_read_lock(); 1636 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]); 1637 if (WARN_ON(!ptk_pn)) { 1638 rcu_read_unlock(); 1639 return; 1640 } 1641 1642 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1643 int i; 1644 1645 for (i = 1; i < mvm->trans->num_rx_queues; i++) 1646 memcpy(ptk_pn->q[i].pn[tid], 1647 status->ptk.aes.seq[tid].ccmp.pn, 1648 IEEE80211_CCMP_PN_LEN); 1649 } 1650 rcu_read_unlock(); 1651 } 1652 1653 static void iwl_mvm_convert_key_counters(struct iwl_wowlan_status_data *status, 1654 union iwl_all_tsc_rsc *sc) 1655 { 1656 int i; 1657 1658 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT); 1659 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC); 1660 1661 /* GTK RX counters */ 1662 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1663 iwl_mvm_tkip_sc_to_seq(&sc->tkip.multicast_rsc[i], 1664 &status->gtk_seq[0].tkip.seq[i]); 1665 iwl_mvm_aes_sc_to_seq(&sc->aes.multicast_rsc[i], 1666 &status->gtk_seq[0].aes.seq[i]); 1667 } 1668 status->gtk_seq[0].valid = true; 1669 status->gtk_seq[0].key_id = -1; 1670 1671 /* PTK TX counter */ 1672 status->ptk.tkip.tx_pn = (u64)le16_to_cpu(sc->tkip.tsc.iv16) | 1673 ((u64)le32_to_cpu(sc->tkip.tsc.iv32) << 16); 1674 status->ptk.aes.tx_pn = le64_to_cpu(sc->aes.tsc.pn); 1675 1676 /* PTK RX counters */ 1677 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1678 iwl_mvm_tkip_sc_to_seq(&sc->tkip.unicast_rsc[i], 1679 &status->ptk.tkip.seq[i]); 1680 iwl_mvm_aes_sc_to_seq(&sc->aes.unicast_rsc[i], 1681 &status->ptk.aes.seq[i]); 1682 } 1683 } 1684 1685 static void 1686 iwl_mvm_convert_key_counters_v5_gtk_seq(struct iwl_wowlan_status_data *status, 1687 struct iwl_wowlan_all_rsc_tsc_v5 *sc, 1688 unsigned int idx, unsigned int key_id) 1689 { 1690 int tid; 1691 1692 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1693 iwl_mvm_le64_to_tkip_seq(sc->mcast_rsc[idx][tid], 1694 &status->gtk_seq[idx].tkip.seq[tid]); 1695 iwl_mvm_le64_to_aes_seq(sc->mcast_rsc[idx][tid], 1696 &status->gtk_seq[idx].aes.seq[tid]); 1697 } 1698 1699 status->gtk_seq[idx].valid = true; 1700 status->gtk_seq[idx].key_id = key_id; 1701 } 1702 1703 static void 1704 iwl_mvm_convert_key_counters_v5(struct iwl_wowlan_status_data *status, 1705 struct iwl_wowlan_all_rsc_tsc_v5 *sc) 1706 { 1707 int i, tid; 1708 1709 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT); 1710 BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC); 1711 BUILD_BUG_ON(ARRAY_SIZE(sc->mcast_rsc) != ARRAY_SIZE(status->gtk_seq)); 1712 1713 /* GTK RX counters */ 1714 for (i = 0; i < ARRAY_SIZE(sc->mcast_key_id_map); i++) { 1715 u8 entry = sc->mcast_key_id_map[i]; 1716 1717 if (entry < ARRAY_SIZE(sc->mcast_rsc)) 1718 iwl_mvm_convert_key_counters_v5_gtk_seq(status, sc, 1719 entry, i); 1720 } 1721 1722 /* PTK TX counters not needed, assigned in device */ 1723 1724 /* PTK RX counters */ 1725 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1726 iwl_mvm_le64_to_tkip_seq(sc->ucast_rsc[tid], 1727 &status->ptk.tkip.seq[tid]); 1728 iwl_mvm_le64_to_aes_seq(sc->ucast_rsc[tid], 1729 &status->ptk.aes.seq[tid]); 1730 } 1731 } 1732 1733 static void iwl_mvm_set_key_rx_seq_idx(struct ieee80211_key_conf *key, 1734 struct iwl_wowlan_status_data *status, 1735 int idx) 1736 { 1737 switch (key->cipher) { 1738 case WLAN_CIPHER_SUITE_CCMP: 1739 case WLAN_CIPHER_SUITE_GCMP: 1740 case WLAN_CIPHER_SUITE_GCMP_256: 1741 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].aes.seq); 1742 break; 1743 case WLAN_CIPHER_SUITE_TKIP: 1744 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].tkip.seq); 1745 break; 1746 default: 1747 WARN_ON(1); 1748 } 1749 } 1750 1751 static void iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf *key, 1752 struct iwl_wowlan_status_data *status, 1753 bool installed) 1754 { 1755 int i; 1756 1757 for (i = 0; i < ARRAY_SIZE(status->gtk_seq); i++) { 1758 if (!status->gtk_seq[i].valid) 1759 continue; 1760 1761 /* Handle the case where we know the key ID */ 1762 if (status->gtk_seq[i].key_id == key->keyidx) { 1763 s8 new_key_id = -1; 1764 1765 if (status->num_of_gtk_rekeys) 1766 new_key_id = status->gtk[0].flags & 1767 IWL_WOWLAN_GTK_IDX_MASK; 1768 1769 /* Don't install a new key's value to an old key */ 1770 if (new_key_id != key->keyidx) 1771 iwl_mvm_set_key_rx_seq_idx(key, status, i); 1772 continue; 1773 } 1774 1775 /* handle the case where we didn't, last key only */ 1776 if (status->gtk_seq[i].key_id == -1 && 1777 (!status->num_of_gtk_rekeys || installed)) 1778 iwl_mvm_set_key_rx_seq_idx(key, status, i); 1779 } 1780 } 1781 1782 struct iwl_mvm_d3_gtk_iter_data { 1783 struct iwl_mvm *mvm; 1784 struct iwl_wowlan_status_data *status; 1785 u32 gtk_cipher, igtk_cipher, bigtk_cipher; 1786 bool unhandled_cipher, igtk_support, bigtk_support; 1787 int num_keys; 1788 }; 1789 1790 static void iwl_mvm_d3_find_last_keys(struct ieee80211_hw *hw, 1791 struct ieee80211_vif *vif, 1792 struct ieee80211_sta *sta, 1793 struct ieee80211_key_conf *key, 1794 void *_data) 1795 { 1796 struct iwl_mvm_d3_gtk_iter_data *data = _data; 1797 1798 if (data->unhandled_cipher) 1799 return; 1800 1801 switch (key->cipher) { 1802 case WLAN_CIPHER_SUITE_WEP40: 1803 case WLAN_CIPHER_SUITE_WEP104: 1804 /* ignore WEP completely, nothing to do */ 1805 return; 1806 case WLAN_CIPHER_SUITE_CCMP: 1807 case WLAN_CIPHER_SUITE_GCMP: 1808 case WLAN_CIPHER_SUITE_GCMP_256: 1809 case WLAN_CIPHER_SUITE_TKIP: 1810 /* we support these */ 1811 data->gtk_cipher = key->cipher; 1812 break; 1813 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 1814 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 1815 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 1816 case WLAN_CIPHER_SUITE_AES_CMAC: 1817 /* we support these */ 1818 if (data->igtk_support && 1819 (key->keyidx == 4 || key->keyidx == 5)) { 1820 data->igtk_cipher = key->cipher; 1821 } else if (data->bigtk_support && 1822 (key->keyidx == 6 || key->keyidx == 7)) { 1823 data->bigtk_cipher = key->cipher; 1824 } else { 1825 data->unhandled_cipher = true; 1826 return; 1827 } 1828 break; 1829 default: 1830 /* everything else - disconnect from AP */ 1831 data->unhandled_cipher = true; 1832 return; 1833 } 1834 1835 data->num_keys++; 1836 } 1837 1838 static void 1839 iwl_mvm_d3_set_igtk_bigtk_ipn(const struct iwl_multicast_key_data *key, 1840 struct ieee80211_key_seq *seq, u32 cipher) 1841 { 1842 switch (cipher) { 1843 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 1844 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 1845 BUILD_BUG_ON(sizeof(seq->aes_gmac.pn) != sizeof(key->ipn)); 1846 memcpy(seq->aes_gmac.pn, key->ipn, sizeof(seq->aes_gmac.pn)); 1847 break; 1848 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 1849 BUILD_BUG_ON(sizeof(seq->aes_cmac.pn) != sizeof(key->ipn)); 1850 memcpy(seq->aes_cmac.pn, key->ipn, sizeof(seq->aes_cmac.pn)); 1851 break; 1852 } 1853 } 1854 1855 static void 1856 iwl_mvm_d3_update_igtk_bigtk(struct iwl_wowlan_status_data *status, 1857 struct ieee80211_key_conf *key, 1858 struct iwl_multicast_key_data *key_data) 1859 { 1860 if (status->num_of_gtk_rekeys && key_data->len) { 1861 /* remove rekeyed key */ 1862 ieee80211_remove_key(key); 1863 } else { 1864 struct ieee80211_key_seq seq; 1865 1866 iwl_mvm_d3_set_igtk_bigtk_ipn(key_data, 1867 &seq, 1868 key->cipher); 1869 ieee80211_set_key_rx_seq(key, 0, &seq); 1870 } 1871 } 1872 1873 static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw, 1874 struct ieee80211_vif *vif, 1875 struct ieee80211_sta *sta, 1876 struct ieee80211_key_conf *key, 1877 void *_data) 1878 { 1879 struct iwl_mvm_d3_gtk_iter_data *data = _data; 1880 struct iwl_wowlan_status_data *status = data->status; 1881 s8 keyidx; 1882 1883 if (data->unhandled_cipher) 1884 return; 1885 1886 switch (key->cipher) { 1887 case WLAN_CIPHER_SUITE_WEP40: 1888 case WLAN_CIPHER_SUITE_WEP104: 1889 /* ignore WEP completely, nothing to do */ 1890 return; 1891 case WLAN_CIPHER_SUITE_CCMP: 1892 case WLAN_CIPHER_SUITE_GCMP: 1893 case WLAN_CIPHER_SUITE_GCMP_256: 1894 if (sta) { 1895 atomic64_set(&key->tx_pn, status->ptk.aes.tx_pn); 1896 iwl_mvm_set_aes_ptk_rx_seq(data->mvm, status, sta, key); 1897 return; 1898 } 1899 fallthrough; 1900 case WLAN_CIPHER_SUITE_TKIP: 1901 if (sta) { 1902 atomic64_set(&key->tx_pn, status->ptk.tkip.tx_pn); 1903 iwl_mvm_set_key_rx_seq_tids(key, status->ptk.tkip.seq); 1904 return; 1905 } 1906 keyidx = key->keyidx; 1907 /* The current key is always sent by the FW, even if it wasn't 1908 * rekeyed during D3. 1909 * We remove an existing key if it has the same index as 1910 * a new key 1911 */ 1912 if (status->num_of_gtk_rekeys && 1913 ((status->gtk[0].len && keyidx == status->gtk[0].id) || 1914 (status->gtk[1].len && keyidx == status->gtk[1].id))) { 1915 ieee80211_remove_key(key); 1916 } else { 1917 iwl_mvm_set_key_rx_seq(key, data->status, false); 1918 } 1919 break; 1920 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 1921 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 1922 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 1923 case WLAN_CIPHER_SUITE_AES_CMAC: 1924 if (key->keyidx == 4 || key->keyidx == 5) { 1925 iwl_mvm_d3_update_igtk_bigtk(status, key, 1926 &status->igtk); 1927 } 1928 if (key->keyidx == 6 || key->keyidx == 7) { 1929 u8 idx = key->keyidx == status->bigtk[1].id; 1930 1931 iwl_mvm_d3_update_igtk_bigtk(status, key, 1932 &status->bigtk[idx]); 1933 } 1934 } 1935 } 1936 1937 static bool iwl_mvm_gtk_rekey(struct iwl_wowlan_status_data *status, 1938 struct ieee80211_vif *vif, 1939 struct iwl_mvm *mvm, u32 gtk_cipher) 1940 { 1941 int i; 1942 struct ieee80211_key_conf *key; 1943 struct { 1944 struct ieee80211_key_conf conf; 1945 u8 key[32]; 1946 } conf = { 1947 .conf.cipher = gtk_cipher, 1948 }; 1949 1950 BUILD_BUG_ON(WLAN_KEY_LEN_CCMP != WLAN_KEY_LEN_GCMP); 1951 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_CCMP); 1952 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_GCMP_256); 1953 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_TKIP); 1954 BUILD_BUG_ON(sizeof(conf.key) < sizeof(status->gtk[0].key)); 1955 1956 switch (gtk_cipher) { 1957 case WLAN_CIPHER_SUITE_CCMP: 1958 case WLAN_CIPHER_SUITE_GCMP: 1959 conf.conf.keylen = WLAN_KEY_LEN_CCMP; 1960 break; 1961 case WLAN_CIPHER_SUITE_GCMP_256: 1962 conf.conf.keylen = WLAN_KEY_LEN_GCMP_256; 1963 break; 1964 case WLAN_CIPHER_SUITE_TKIP: 1965 conf.conf.keylen = WLAN_KEY_LEN_TKIP; 1966 break; 1967 default: 1968 WARN_ON(1); 1969 } 1970 1971 for (i = 0; i < ARRAY_SIZE(status->gtk); i++) { 1972 if (!status->gtk[i].len) 1973 continue; 1974 1975 conf.conf.keyidx = status->gtk[i].id; 1976 IWL_DEBUG_WOWLAN(mvm, 1977 "Received from FW GTK cipher %d, key index %d\n", 1978 conf.conf.cipher, conf.conf.keyidx); 1979 memcpy(conf.conf.key, status->gtk[i].key, 1980 sizeof(status->gtk[i].key)); 1981 1982 key = ieee80211_gtk_rekey_add(vif, &conf.conf); 1983 if (IS_ERR(key)) 1984 return false; 1985 iwl_mvm_set_key_rx_seq_idx(key, status, i); 1986 } 1987 1988 return true; 1989 } 1990 1991 static bool 1992 iwl_mvm_d3_igtk_bigtk_rekey_add(struct iwl_wowlan_status_data *status, 1993 struct ieee80211_vif *vif, u32 cipher, 1994 struct iwl_multicast_key_data *key_data) 1995 { 1996 struct ieee80211_key_conf *key_config; 1997 struct { 1998 struct ieee80211_key_conf conf; 1999 u8 key[WOWLAN_KEY_MAX_SIZE]; 2000 } conf = { 2001 .conf.cipher = cipher, 2002 .conf.keyidx = key_data->id, 2003 }; 2004 struct ieee80211_key_seq seq; 2005 2006 if (!key_data->len) 2007 return true; 2008 2009 iwl_mvm_d3_set_igtk_bigtk_ipn(key_data, &seq, conf.conf.cipher); 2010 2011 switch (cipher) { 2012 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 2013 conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_128; 2014 break; 2015 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 2016 conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_256; 2017 break; 2018 case WLAN_CIPHER_SUITE_AES_CMAC: 2019 conf.conf.keylen = WLAN_KEY_LEN_AES_CMAC; 2020 break; 2021 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 2022 conf.conf.keylen = WLAN_KEY_LEN_BIP_CMAC_256; 2023 break; 2024 default: 2025 WARN_ON(1); 2026 } 2027 BUILD_BUG_ON(sizeof(conf.key) < sizeof(key_data->key)); 2028 memcpy(conf.conf.key, key_data->key, conf.conf.keylen); 2029 2030 key_config = ieee80211_gtk_rekey_add(vif, &conf.conf); 2031 if (IS_ERR(key_config)) 2032 return false; 2033 ieee80211_set_key_rx_seq(key_config, 0, &seq); 2034 return true; 2035 } 2036 2037 static int iwl_mvm_lookup_wowlan_status_ver(struct iwl_mvm *mvm) 2038 { 2039 u8 notif_ver; 2040 2041 if (!fw_has_api(&mvm->fw->ucode_capa, 2042 IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL)) 2043 return 6; 2044 2045 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */ 2046 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP, 2047 WOWLAN_GET_STATUSES, 0); 2048 if (!notif_ver) 2049 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, 2050 WOWLAN_GET_STATUSES, 7); 2051 2052 return notif_ver; 2053 } 2054 2055 static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm, 2056 struct ieee80211_vif *vif, 2057 struct iwl_wowlan_status_data *status) 2058 { 2059 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2060 struct iwl_mvm_d3_gtk_iter_data gtkdata = { 2061 .mvm = mvm, 2062 .status = status, 2063 }; 2064 int i; 2065 2066 u32 disconnection_reasons = 2067 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 2068 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH; 2069 2070 if (!status || !vif->bss_conf.bssid) 2071 return false; 2072 2073 if (status->wakeup_reasons & disconnection_reasons) 2074 return false; 2075 2076 if (iwl_mvm_lookup_wowlan_status_ver(mvm) > 6 || 2077 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2078 WOWLAN_INFO_NOTIFICATION, 2079 0)) 2080 gtkdata.igtk_support = true; 2081 2082 if (iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2083 WOWLAN_INFO_NOTIFICATION, 2084 0) >= 3) 2085 gtkdata.bigtk_support = true; 2086 2087 /* find last GTK that we used initially, if any */ 2088 ieee80211_iter_keys(mvm->hw, vif, 2089 iwl_mvm_d3_find_last_keys, >kdata); 2090 /* not trying to keep connections with MFP/unhandled ciphers */ 2091 if (gtkdata.unhandled_cipher) 2092 return false; 2093 if (!gtkdata.num_keys) 2094 goto out; 2095 2096 /* 2097 * invalidate all other GTKs that might still exist and update 2098 * the one that we used 2099 */ 2100 ieee80211_iter_keys(mvm->hw, vif, 2101 iwl_mvm_d3_update_keys, >kdata); 2102 2103 if (status->num_of_gtk_rekeys) { 2104 __be64 replay_ctr = cpu_to_be64(status->replay_ctr); 2105 2106 IWL_DEBUG_WOWLAN(mvm, "num of GTK rekeying %d\n", 2107 status->num_of_gtk_rekeys); 2108 2109 if (!iwl_mvm_gtk_rekey(status, vif, mvm, gtkdata.gtk_cipher)) 2110 return false; 2111 2112 if (!iwl_mvm_d3_igtk_bigtk_rekey_add(status, vif, 2113 gtkdata.igtk_cipher, 2114 &status->igtk)) 2115 return false; 2116 2117 for (i = 0; i < ARRAY_SIZE(status->bigtk); i++) { 2118 if (!iwl_mvm_d3_igtk_bigtk_rekey_add(status, vif, 2119 gtkdata.bigtk_cipher, 2120 &status->bigtk[i])) 2121 return false; 2122 } 2123 2124 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid, 2125 (void *)&replay_ctr, GFP_KERNEL); 2126 } 2127 2128 out: 2129 if (iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP, 2130 WOWLAN_GET_STATUSES, 0) < 10) { 2131 mvmvif->seqno_valid = true; 2132 /* +0x10 because the set API expects next-to-use, not last-used */ 2133 mvmvif->seqno = status->non_qos_seq_ctr + 0x10; 2134 } 2135 2136 return true; 2137 } 2138 2139 static void iwl_mvm_convert_gtk_v2(struct iwl_wowlan_status_data *status, 2140 struct iwl_wowlan_gtk_status_v2 *data) 2141 { 2142 BUILD_BUG_ON(sizeof(status->gtk[0].key) < sizeof(data->key)); 2143 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY + 2144 sizeof(data->tkip_mic_key) > 2145 sizeof(status->gtk[0].key)); 2146 2147 status->gtk[0].len = data->key_len; 2148 status->gtk[0].flags = data->key_flags; 2149 2150 memcpy(status->gtk[0].key, data->key, sizeof(data->key)); 2151 2152 /* if it's as long as the TKIP encryption key, copy MIC key */ 2153 if (status->gtk[0].len == NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY) 2154 memcpy(status->gtk[0].key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 2155 data->tkip_mic_key, sizeof(data->tkip_mic_key)); 2156 } 2157 2158 static void iwl_mvm_convert_gtk_v3(struct iwl_wowlan_status_data *status, 2159 struct iwl_wowlan_gtk_status_v3 *data) 2160 { 2161 int data_idx, status_idx = 0; 2162 2163 BUILD_BUG_ON(sizeof(status->gtk[0].key) < sizeof(data[0].key)); 2164 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY + 2165 sizeof(data[0].tkip_mic_key) > 2166 sizeof(status->gtk[0].key)); 2167 BUILD_BUG_ON(ARRAY_SIZE(status->gtk) < WOWLAN_GTK_KEYS_NUM); 2168 for (data_idx = 0; data_idx < ARRAY_SIZE(status->gtk); data_idx++) { 2169 if (!(data[data_idx].key_len)) 2170 continue; 2171 status->gtk[status_idx].len = data[data_idx].key_len; 2172 status->gtk[status_idx].flags = data[data_idx].key_flags; 2173 status->gtk[status_idx].id = status->gtk[status_idx].flags & 2174 IWL_WOWLAN_GTK_IDX_MASK; 2175 2176 memcpy(status->gtk[status_idx].key, data[data_idx].key, 2177 sizeof(data[data_idx].key)); 2178 2179 /* if it's as long as the TKIP encryption key, copy MIC key */ 2180 if (status->gtk[status_idx].len == 2181 NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY) 2182 memcpy(status->gtk[status_idx].key + 2183 NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 2184 data[data_idx].tkip_mic_key, 2185 sizeof(data[data_idx].tkip_mic_key)); 2186 status_idx++; 2187 } 2188 } 2189 2190 static void iwl_mvm_convert_igtk(struct iwl_wowlan_status_data *status, 2191 struct iwl_wowlan_igtk_status *data) 2192 { 2193 BUILD_BUG_ON(sizeof(status->igtk.key) < sizeof(data->key)); 2194 2195 if (!data->key_len) 2196 return; 2197 2198 status->igtk.len = data->key_len; 2199 status->igtk.flags = data->key_flags; 2200 status->igtk.id = u32_get_bits(data->key_flags, 2201 IWL_WOWLAN_IGTK_BIGTK_IDX_MASK) 2202 + WOWLAN_IGTK_MIN_INDEX; 2203 2204 memcpy(status->igtk.key, data->key, sizeof(data->key)); 2205 memcpy(status->igtk.ipn, data->ipn, sizeof(data->ipn)); 2206 } 2207 2208 static void iwl_mvm_convert_bigtk(struct iwl_wowlan_status_data *status, 2209 const struct iwl_wowlan_igtk_status *data) 2210 { 2211 int data_idx, status_idx = 0; 2212 2213 BUILD_BUG_ON(ARRAY_SIZE(status->bigtk) < WOWLAN_BIGTK_KEYS_NUM); 2214 2215 for (data_idx = 0; data_idx < WOWLAN_BIGTK_KEYS_NUM; data_idx++) { 2216 if (!data[data_idx].key_len) 2217 continue; 2218 2219 status->bigtk[status_idx].len = data[data_idx].key_len; 2220 status->bigtk[status_idx].flags = data[data_idx].key_flags; 2221 status->bigtk[status_idx].id = 2222 u32_get_bits(data[data_idx].key_flags, 2223 IWL_WOWLAN_IGTK_BIGTK_IDX_MASK) 2224 + WOWLAN_BIGTK_MIN_INDEX; 2225 2226 BUILD_BUG_ON(sizeof(status->bigtk[status_idx].key) < 2227 sizeof(data[data_idx].key)); 2228 BUILD_BUG_ON(sizeof(status->bigtk[status_idx].ipn) < 2229 sizeof(data[data_idx].ipn)); 2230 2231 memcpy(status->bigtk[status_idx].key, data[data_idx].key, 2232 sizeof(data[data_idx].key)); 2233 memcpy(status->bigtk[status_idx].ipn, data[data_idx].ipn, 2234 sizeof(data[data_idx].ipn)); 2235 status_idx++; 2236 } 2237 } 2238 2239 static void iwl_mvm_parse_wowlan_info_notif(struct iwl_mvm *mvm, 2240 struct iwl_wowlan_info_notif *data, 2241 struct iwl_wowlan_status_data *status, 2242 u32 len) 2243 { 2244 u32 i; 2245 2246 if (!data) { 2247 IWL_ERR(mvm, "iwl_wowlan_info_notif data is NULL\n"); 2248 status = NULL; 2249 return; 2250 } 2251 2252 if (len < sizeof(*data)) { 2253 IWL_ERR(mvm, "Invalid WoWLAN info notification!\n"); 2254 status = NULL; 2255 return; 2256 } 2257 2258 iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc); 2259 iwl_mvm_convert_gtk_v3(status, data->gtk); 2260 iwl_mvm_convert_igtk(status, &data->igtk[0]); 2261 iwl_mvm_convert_bigtk(status, data->bigtk); 2262 status->replay_ctr = le64_to_cpu(data->replay_ctr); 2263 status->pattern_number = le16_to_cpu(data->pattern_number); 2264 for (i = 0; i < IWL_MAX_TID_COUNT; i++) 2265 status->qos_seq_ctr[i] = 2266 le16_to_cpu(data->qos_seq_ctr[i]); 2267 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); 2268 status->num_of_gtk_rekeys = 2269 le32_to_cpu(data->num_of_gtk_rekeys); 2270 status->received_beacons = le32_to_cpu(data->received_beacons); 2271 status->tid_tear_down = data->tid_tear_down; 2272 } 2273 2274 static void 2275 iwl_mvm_parse_wowlan_info_notif_v2(struct iwl_mvm *mvm, 2276 struct iwl_wowlan_info_notif_v2 *data, 2277 struct iwl_wowlan_status_data *status, 2278 u32 len) 2279 { 2280 u32 i; 2281 2282 if (!data) { 2283 IWL_ERR(mvm, "iwl_wowlan_info_notif data is NULL\n"); 2284 status = NULL; 2285 return; 2286 } 2287 2288 if (len < sizeof(*data)) { 2289 IWL_ERR(mvm, "Invalid WoWLAN info notification!\n"); 2290 status = NULL; 2291 return; 2292 } 2293 2294 iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc); 2295 iwl_mvm_convert_gtk_v3(status, data->gtk); 2296 iwl_mvm_convert_igtk(status, &data->igtk[0]); 2297 status->replay_ctr = le64_to_cpu(data->replay_ctr); 2298 status->pattern_number = le16_to_cpu(data->pattern_number); 2299 for (i = 0; i < IWL_MAX_TID_COUNT; i++) 2300 status->qos_seq_ctr[i] = 2301 le16_to_cpu(data->qos_seq_ctr[i]); 2302 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); 2303 status->num_of_gtk_rekeys = 2304 le32_to_cpu(data->num_of_gtk_rekeys); 2305 status->received_beacons = le32_to_cpu(data->received_beacons); 2306 status->tid_tear_down = data->tid_tear_down; 2307 } 2308 2309 /* Occasionally, templates would be nice. This is one of those times ... */ 2310 #define iwl_mvm_parse_wowlan_status_common(_ver) \ 2311 static struct iwl_wowlan_status_data * \ 2312 iwl_mvm_parse_wowlan_status_common_ ## _ver(struct iwl_mvm *mvm, \ 2313 struct iwl_wowlan_status_ ##_ver *data,\ 2314 int len) \ 2315 { \ 2316 struct iwl_wowlan_status_data *status; \ 2317 int data_size, i; \ 2318 \ 2319 if (len < sizeof(*data)) { \ 2320 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \ 2321 return NULL; \ 2322 } \ 2323 \ 2324 data_size = ALIGN(le32_to_cpu(data->wake_packet_bufsize), 4); \ 2325 if (len != sizeof(*data) + data_size) { \ 2326 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \ 2327 return NULL; \ 2328 } \ 2329 \ 2330 status = kzalloc(sizeof(*status), GFP_KERNEL); \ 2331 if (!status) \ 2332 return NULL; \ 2333 \ 2334 /* copy all the common fields */ \ 2335 status->replay_ctr = le64_to_cpu(data->replay_ctr); \ 2336 status->pattern_number = le16_to_cpu(data->pattern_number); \ 2337 status->non_qos_seq_ctr = le16_to_cpu(data->non_qos_seq_ctr); \ 2338 for (i = 0; i < 8; i++) \ 2339 status->qos_seq_ctr[i] = \ 2340 le16_to_cpu(data->qos_seq_ctr[i]); \ 2341 status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); \ 2342 status->num_of_gtk_rekeys = \ 2343 le32_to_cpu(data->num_of_gtk_rekeys); \ 2344 status->received_beacons = le32_to_cpu(data->received_beacons); \ 2345 status->wake_packet_length = \ 2346 le32_to_cpu(data->wake_packet_length); \ 2347 status->wake_packet_bufsize = \ 2348 le32_to_cpu(data->wake_packet_bufsize); \ 2349 if (status->wake_packet_bufsize) { \ 2350 status->wake_packet = \ 2351 kmemdup(data->wake_packet, \ 2352 status->wake_packet_bufsize, \ 2353 GFP_KERNEL); \ 2354 if (!status->wake_packet) { \ 2355 kfree(status); \ 2356 return NULL; \ 2357 } \ 2358 } else { \ 2359 status->wake_packet = NULL; \ 2360 } \ 2361 \ 2362 return status; \ 2363 } 2364 2365 iwl_mvm_parse_wowlan_status_common(v6) 2366 iwl_mvm_parse_wowlan_status_common(v7) 2367 iwl_mvm_parse_wowlan_status_common(v9) 2368 iwl_mvm_parse_wowlan_status_common(v12) 2369 2370 static struct iwl_wowlan_status_data * 2371 iwl_mvm_send_wowlan_get_status(struct iwl_mvm *mvm, u8 sta_id) 2372 { 2373 struct iwl_wowlan_status_data *status; 2374 struct iwl_wowlan_get_status_cmd get_status_cmd = { 2375 .sta_id = cpu_to_le32(sta_id), 2376 }; 2377 struct iwl_host_cmd cmd = { 2378 .id = WOWLAN_GET_STATUSES, 2379 .flags = CMD_WANT_SKB, 2380 .data = { &get_status_cmd, }, 2381 .len = { sizeof(get_status_cmd), }, 2382 }; 2383 int ret, len; 2384 u8 notif_ver; 2385 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id, 2386 IWL_FW_CMD_VER_UNKNOWN); 2387 2388 if (cmd_ver == IWL_FW_CMD_VER_UNKNOWN) 2389 cmd.len[0] = 0; 2390 2391 lockdep_assert_held(&mvm->mutex); 2392 2393 ret = iwl_mvm_send_cmd(mvm, &cmd); 2394 if (ret) { 2395 IWL_ERR(mvm, "failed to query wakeup status (%d)\n", ret); 2396 return ERR_PTR(ret); 2397 } 2398 2399 len = iwl_rx_packet_payload_len(cmd.resp_pkt); 2400 2401 /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */ 2402 notif_ver = iwl_mvm_lookup_wowlan_status_ver(mvm); 2403 2404 if (notif_ver < 7) { 2405 struct iwl_wowlan_status_v6 *v6 = (void *)cmd.resp_pkt->data; 2406 2407 status = iwl_mvm_parse_wowlan_status_common_v6(mvm, v6, len); 2408 if (!status) 2409 goto out_free_resp; 2410 2411 BUILD_BUG_ON(sizeof(v6->gtk.decrypt_key) > 2412 sizeof(status->gtk[0].key)); 2413 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY + 2414 sizeof(v6->gtk.tkip_mic_key) > 2415 sizeof(status->gtk[0].key)); 2416 2417 /* copy GTK info to the right place */ 2418 memcpy(status->gtk[0].key, v6->gtk.decrypt_key, 2419 sizeof(v6->gtk.decrypt_key)); 2420 memcpy(status->gtk[0].key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 2421 v6->gtk.tkip_mic_key, 2422 sizeof(v6->gtk.tkip_mic_key)); 2423 2424 iwl_mvm_convert_key_counters(status, &v6->gtk.rsc.all_tsc_rsc); 2425 2426 /* hardcode the key length to 16 since v6 only supports 16 */ 2427 status->gtk[0].len = 16; 2428 2429 /* 2430 * The key index only uses 2 bits (values 0 to 3) and 2431 * we always set bit 7 which means this is the 2432 * currently used key. 2433 */ 2434 status->gtk[0].flags = v6->gtk.key_index | BIT(7); 2435 } else if (notif_ver == 7) { 2436 struct iwl_wowlan_status_v7 *v7 = (void *)cmd.resp_pkt->data; 2437 2438 status = iwl_mvm_parse_wowlan_status_common_v7(mvm, v7, len); 2439 if (!status) 2440 goto out_free_resp; 2441 2442 iwl_mvm_convert_key_counters(status, &v7->gtk[0].rsc.all_tsc_rsc); 2443 iwl_mvm_convert_gtk_v2(status, &v7->gtk[0]); 2444 iwl_mvm_convert_igtk(status, &v7->igtk[0]); 2445 } else if (notif_ver == 9 || notif_ver == 10 || notif_ver == 11) { 2446 struct iwl_wowlan_status_v9 *v9 = (void *)cmd.resp_pkt->data; 2447 2448 /* these three command versions have same layout and size, the 2449 * difference is only in a few not used (reserved) fields. 2450 */ 2451 status = iwl_mvm_parse_wowlan_status_common_v9(mvm, v9, len); 2452 if (!status) 2453 goto out_free_resp; 2454 2455 iwl_mvm_convert_key_counters(status, &v9->gtk[0].rsc.all_tsc_rsc); 2456 iwl_mvm_convert_gtk_v2(status, &v9->gtk[0]); 2457 iwl_mvm_convert_igtk(status, &v9->igtk[0]); 2458 2459 status->tid_tear_down = v9->tid_tear_down; 2460 } else if (notif_ver == 12) { 2461 struct iwl_wowlan_status_v12 *v12 = (void *)cmd.resp_pkt->data; 2462 2463 status = iwl_mvm_parse_wowlan_status_common_v12(mvm, v12, len); 2464 if (!status) 2465 goto out_free_resp; 2466 2467 iwl_mvm_convert_key_counters_v5(status, &v12->gtk[0].sc); 2468 iwl_mvm_convert_gtk_v3(status, v12->gtk); 2469 iwl_mvm_convert_igtk(status, &v12->igtk[0]); 2470 2471 status->tid_tear_down = v12->tid_tear_down; 2472 } else { 2473 IWL_ERR(mvm, 2474 "Firmware advertises unknown WoWLAN status response %d!\n", 2475 notif_ver); 2476 status = NULL; 2477 } 2478 2479 out_free_resp: 2480 iwl_free_resp(&cmd); 2481 return status; 2482 } 2483 2484 /* releases the MVM mutex */ 2485 static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm, 2486 struct ieee80211_vif *vif, 2487 struct iwl_wowlan_status_data *status) 2488 { 2489 int i; 2490 bool keep; 2491 struct iwl_mvm_sta *mvm_ap_sta; 2492 2493 if (!status) 2494 goto out_unlock; 2495 2496 IWL_DEBUG_WOWLAN(mvm, "wakeup reason 0x%x\n", 2497 status->wakeup_reasons); 2498 2499 /* still at hard-coded place 0 for D3 image */ 2500 mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, 0); 2501 if (!mvm_ap_sta) 2502 goto out_unlock; 2503 2504 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 2505 u16 seq = status->qos_seq_ctr[i]; 2506 /* firmware stores last-used value, we store next value */ 2507 seq += 0x10; 2508 mvm_ap_sta->tid_data[i].seq_number = seq; 2509 } 2510 2511 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000) { 2512 i = mvm->offload_tid; 2513 iwl_trans_set_q_ptrs(mvm->trans, 2514 mvm_ap_sta->tid_data[i].txq_id, 2515 mvm_ap_sta->tid_data[i].seq_number >> 4); 2516 } 2517 2518 /* now we have all the data we need, unlock to avoid mac80211 issues */ 2519 mutex_unlock(&mvm->mutex); 2520 2521 iwl_mvm_report_wakeup_reasons(mvm, vif, status); 2522 2523 keep = iwl_mvm_setup_connection_keep(mvm, vif, status); 2524 2525 return keep; 2526 2527 out_unlock: 2528 mutex_unlock(&mvm->mutex); 2529 return false; 2530 } 2531 2532 #define ND_QUERY_BUF_LEN (sizeof(struct iwl_scan_offload_profile_match) * \ 2533 IWL_SCAN_MAX_PROFILES) 2534 2535 struct iwl_mvm_nd_results { 2536 u32 matched_profiles; 2537 u8 matches[ND_QUERY_BUF_LEN]; 2538 }; 2539 2540 static int 2541 iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm, 2542 struct iwl_mvm_nd_results *results) 2543 { 2544 struct iwl_scan_offload_match_info *query; 2545 struct iwl_host_cmd cmd = { 2546 .id = SCAN_OFFLOAD_PROFILES_QUERY_CMD, 2547 .flags = CMD_WANT_SKB, 2548 }; 2549 int ret, len; 2550 size_t query_len, matches_len; 2551 int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw); 2552 2553 ret = iwl_mvm_send_cmd(mvm, &cmd); 2554 if (ret) { 2555 IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret); 2556 return ret; 2557 } 2558 2559 if (fw_has_api(&mvm->fw->ucode_capa, 2560 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2561 query_len = sizeof(struct iwl_scan_offload_match_info); 2562 matches_len = sizeof(struct iwl_scan_offload_profile_match) * 2563 max_profiles; 2564 } else { 2565 query_len = sizeof(struct iwl_scan_offload_profiles_query_v1); 2566 matches_len = sizeof(struct iwl_scan_offload_profile_match_v1) * 2567 max_profiles; 2568 } 2569 2570 len = iwl_rx_packet_payload_len(cmd.resp_pkt); 2571 if (len < query_len) { 2572 IWL_ERR(mvm, "Invalid scan offload profiles query response!\n"); 2573 ret = -EIO; 2574 goto out_free_resp; 2575 } 2576 2577 query = (void *)cmd.resp_pkt->data; 2578 2579 results->matched_profiles = le32_to_cpu(query->matched_profiles); 2580 memcpy(results->matches, query->matches, matches_len); 2581 2582 #ifdef CONFIG_IWLWIFI_DEBUGFS 2583 mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done); 2584 #endif 2585 2586 out_free_resp: 2587 iwl_free_resp(&cmd); 2588 return ret; 2589 } 2590 2591 static int iwl_mvm_query_num_match_chans(struct iwl_mvm *mvm, 2592 struct iwl_mvm_nd_results *results, 2593 int idx) 2594 { 2595 int n_chans = 0, i; 2596 2597 if (fw_has_api(&mvm->fw->ucode_capa, 2598 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2599 struct iwl_scan_offload_profile_match *matches = 2600 (void *)results->matches; 2601 2602 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; i++) 2603 n_chans += hweight8(matches[idx].matching_channels[i]); 2604 } else { 2605 struct iwl_scan_offload_profile_match_v1 *matches = 2606 (void *)results->matches; 2607 2608 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1; i++) 2609 n_chans += hweight8(matches[idx].matching_channels[i]); 2610 } 2611 2612 return n_chans; 2613 } 2614 2615 static void iwl_mvm_query_set_freqs(struct iwl_mvm *mvm, 2616 struct iwl_mvm_nd_results *results, 2617 struct cfg80211_wowlan_nd_match *match, 2618 int idx) 2619 { 2620 int i; 2621 2622 if (fw_has_api(&mvm->fw->ucode_capa, 2623 IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { 2624 struct iwl_scan_offload_profile_match *matches = 2625 (void *)results->matches; 2626 2627 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; i++) 2628 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8))) 2629 match->channels[match->n_channels++] = 2630 mvm->nd_channels[i]->center_freq; 2631 } else { 2632 struct iwl_scan_offload_profile_match_v1 *matches = 2633 (void *)results->matches; 2634 2635 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1 * 8; i++) 2636 if (matches[idx].matching_channels[i / 8] & (BIT(i % 8))) 2637 match->channels[match->n_channels++] = 2638 mvm->nd_channels[i]->center_freq; 2639 } 2640 } 2641 2642 /** 2643 * enum iwl_d3_notif - d3 notifications 2644 * @IWL_D3_NOTIF_WOWLAN_INFO: WOWLAN_INFO_NOTIF was received 2645 * @IWL_D3_NOTIF_WOWLAN_WAKE_PKT: WOWLAN_WAKE_PKT_NOTIF was received 2646 * @IWL_D3_NOTIF_PROT_OFFLOAD: PROT_OFFLOAD_NOTIF was received 2647 * @IWL_D3_ND_MATCH_INFO: OFFLOAD_MATCH_INFO_NOTIF was received 2648 * @IWL_D3_NOTIF_D3_END_NOTIF: D3_END_NOTIF was received 2649 */ 2650 enum iwl_d3_notif { 2651 IWL_D3_NOTIF_WOWLAN_INFO = BIT(0), 2652 IWL_D3_NOTIF_WOWLAN_WAKE_PKT = BIT(1), 2653 IWL_D3_NOTIF_PROT_OFFLOAD = BIT(2), 2654 IWL_D3_ND_MATCH_INFO = BIT(3), 2655 IWL_D3_NOTIF_D3_END_NOTIF = BIT(4) 2656 }; 2657 2658 /* manage d3 resume data */ 2659 struct iwl_d3_data { 2660 struct iwl_wowlan_status_data *status; 2661 bool test; 2662 u32 d3_end_flags; 2663 u32 notif_expected; /* bitmap - see &enum iwl_d3_notif */ 2664 u32 notif_received; /* bitmap - see &enum iwl_d3_notif */ 2665 struct iwl_mvm_nd_results *nd_results; 2666 bool nd_results_valid; 2667 }; 2668 2669 static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm, 2670 struct ieee80211_vif *vif, 2671 struct iwl_d3_data *d3_data) 2672 { 2673 struct cfg80211_wowlan_nd_info *net_detect = NULL; 2674 struct cfg80211_wowlan_wakeup wakeup = { 2675 .pattern_idx = -1, 2676 }; 2677 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; 2678 unsigned long matched_profiles; 2679 u32 reasons = 0; 2680 int i, n_matches, ret; 2681 2682 if (WARN_ON(!d3_data || !d3_data->status)) 2683 goto out; 2684 2685 reasons = d3_data->status->wakeup_reasons; 2686 2687 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 2688 wakeup.rfkill_release = true; 2689 2690 if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) 2691 goto out; 2692 2693 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 2694 WOWLAN_INFO_NOTIFICATION, 0)) { 2695 IWL_INFO(mvm, "Query FW for ND results\n"); 2696 ret = iwl_mvm_netdetect_query_results(mvm, d3_data->nd_results); 2697 2698 } else { 2699 IWL_INFO(mvm, "Notification based ND results\n"); 2700 ret = d3_data->nd_results_valid ? 0 : -1; 2701 } 2702 2703 if (ret || !d3_data->nd_results->matched_profiles) { 2704 wakeup_report = NULL; 2705 goto out; 2706 } 2707 2708 matched_profiles = d3_data->nd_results->matched_profiles; 2709 if (mvm->n_nd_match_sets) { 2710 n_matches = hweight_long(matched_profiles); 2711 } else { 2712 IWL_ERR(mvm, "no net detect match information available\n"); 2713 n_matches = 0; 2714 } 2715 2716 net_detect = kzalloc(struct_size(net_detect, matches, n_matches), 2717 GFP_KERNEL); 2718 if (!net_detect || !n_matches) 2719 goto out_report_nd; 2720 2721 for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) { 2722 struct cfg80211_wowlan_nd_match *match; 2723 int idx, n_channels = 0; 2724 2725 n_channels = iwl_mvm_query_num_match_chans(mvm, 2726 d3_data->nd_results, 2727 i); 2728 2729 match = kzalloc(struct_size(match, channels, n_channels), 2730 GFP_KERNEL); 2731 if (!match) 2732 goto out_report_nd; 2733 2734 net_detect->matches[net_detect->n_matches++] = match; 2735 2736 /* We inverted the order of the SSIDs in the scan 2737 * request, so invert the index here. 2738 */ 2739 idx = mvm->n_nd_match_sets - i - 1; 2740 match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len; 2741 memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid, 2742 match->ssid.ssid_len); 2743 2744 if (mvm->n_nd_channels < n_channels) 2745 continue; 2746 2747 iwl_mvm_query_set_freqs(mvm, d3_data->nd_results, match, i); 2748 } 2749 2750 out_report_nd: 2751 wakeup.net_detect = net_detect; 2752 out: 2753 iwl_mvm_free_nd(mvm); 2754 2755 mutex_unlock(&mvm->mutex); 2756 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); 2757 2758 if (net_detect) { 2759 for (i = 0; i < net_detect->n_matches; i++) 2760 kfree(net_detect->matches[i]); 2761 kfree(net_detect); 2762 } 2763 } 2764 2765 static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac, 2766 struct ieee80211_vif *vif) 2767 { 2768 /* skip the one we keep connection on */ 2769 if (data == vif) 2770 return; 2771 2772 if (vif->type == NL80211_IFTYPE_STATION) 2773 ieee80211_resume_disconnect(vif); 2774 } 2775 2776 static bool iwl_mvm_rt_status(struct iwl_trans *trans, u32 base, u32 *err_id) 2777 { 2778 struct error_table_start { 2779 /* cf. struct iwl_error_event_table */ 2780 u32 valid; 2781 __le32 err_id; 2782 } err_info; 2783 2784 if (!base) 2785 return false; 2786 2787 iwl_trans_read_mem_bytes(trans, base, 2788 &err_info, sizeof(err_info)); 2789 if (err_info.valid && err_id) 2790 *err_id = le32_to_cpu(err_info.err_id); 2791 2792 return !!err_info.valid; 2793 } 2794 2795 static bool iwl_mvm_check_rt_status(struct iwl_mvm *mvm, 2796 struct ieee80211_vif *vif) 2797 { 2798 u32 err_id; 2799 2800 /* check for lmac1 error */ 2801 if (iwl_mvm_rt_status(mvm->trans, 2802 mvm->trans->dbg.lmac_error_event_table[0], 2803 &err_id)) { 2804 if (err_id == RF_KILL_INDICATOR_FOR_WOWLAN) { 2805 struct cfg80211_wowlan_wakeup wakeup = { 2806 .rfkill_release = true, 2807 }; 2808 ieee80211_report_wowlan_wakeup(vif, &wakeup, 2809 GFP_KERNEL); 2810 } 2811 return true; 2812 } 2813 2814 /* check if we have lmac2 set and check for error */ 2815 if (iwl_mvm_rt_status(mvm->trans, 2816 mvm->trans->dbg.lmac_error_event_table[1], NULL)) 2817 return true; 2818 2819 /* check for umac error */ 2820 if (iwl_mvm_rt_status(mvm->trans, 2821 mvm->trans->dbg.umac_error_event_table, NULL)) 2822 return true; 2823 2824 return false; 2825 } 2826 2827 /* 2828 * This function assumes: 2829 * 1. The mutex is already held. 2830 * 2. The callee functions unlock the mutex. 2831 */ 2832 static bool 2833 iwl_mvm_choose_query_wakeup_reasons(struct iwl_mvm *mvm, 2834 struct ieee80211_vif *vif, 2835 struct iwl_d3_data *d3_data) 2836 { 2837 lockdep_assert_held(&mvm->mutex); 2838 2839 /* if FW uses status notification, status shouldn't be NULL here */ 2840 if (!d3_data->status) { 2841 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2842 u8 sta_id = mvm->net_detect ? IWL_MVM_INVALID_STA : 2843 mvmvif->deflink.ap_sta_id; 2844 2845 d3_data->status = iwl_mvm_send_wowlan_get_status(mvm, sta_id); 2846 } 2847 2848 if (mvm->net_detect) { 2849 iwl_mvm_query_netdetect_reasons(mvm, vif, d3_data); 2850 } else { 2851 bool keep = iwl_mvm_query_wakeup_reasons(mvm, vif, 2852 d3_data->status); 2853 2854 #ifdef CONFIG_IWLWIFI_DEBUGFS 2855 if (keep) 2856 mvm->keep_vif = vif; 2857 #endif 2858 2859 return keep; 2860 } 2861 return false; 2862 } 2863 2864 #define IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT (IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET | \ 2865 IWL_WOWLAN_WAKEUP_BY_PATTERN | \ 2866 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN |\ 2867 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN_WILDCARD |\ 2868 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN |\ 2869 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN_WILDCARD) 2870 2871 static int iwl_mvm_wowlan_store_wake_pkt(struct iwl_mvm *mvm, 2872 struct iwl_wowlan_wake_pkt_notif *notif, 2873 struct iwl_wowlan_status_data *status, 2874 u32 len) 2875 { 2876 u32 data_size, packet_len = le32_to_cpu(notif->wake_packet_length); 2877 2878 if (len < sizeof(*notif)) { 2879 IWL_ERR(mvm, "Invalid WoWLAN wake packet notification!\n"); 2880 return -EIO; 2881 } 2882 2883 if (WARN_ON(!status)) { 2884 IWL_ERR(mvm, "Got wake packet notification but wowlan status data is NULL\n"); 2885 return -EIO; 2886 } 2887 2888 if (WARN_ON(!(status->wakeup_reasons & 2889 IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT))) { 2890 IWL_ERR(mvm, "Got wakeup packet but wakeup reason is %x\n", 2891 status->wakeup_reasons); 2892 return -EIO; 2893 } 2894 2895 data_size = len - offsetof(struct iwl_wowlan_wake_pkt_notif, wake_packet); 2896 2897 /* data_size got the padding from the notification, remove it. */ 2898 if (packet_len < data_size) 2899 data_size = packet_len; 2900 2901 status->wake_packet = kmemdup(notif->wake_packet, data_size, 2902 GFP_ATOMIC); 2903 2904 if (!status->wake_packet) 2905 return -ENOMEM; 2906 2907 status->wake_packet_length = packet_len; 2908 status->wake_packet_bufsize = data_size; 2909 2910 return 0; 2911 } 2912 2913 static void iwl_mvm_nd_match_info_handler(struct iwl_mvm *mvm, 2914 struct iwl_d3_data *d3_data, 2915 struct iwl_scan_offload_match_info *notif, 2916 u32 len) 2917 { 2918 struct iwl_wowlan_status_data *status = d3_data->status; 2919 struct ieee80211_vif *vif = iwl_mvm_get_bss_vif(mvm); 2920 struct iwl_mvm_nd_results *results = d3_data->nd_results; 2921 size_t i, matches_len = sizeof(struct iwl_scan_offload_profile_match) * 2922 iwl_umac_scan_get_max_profiles(mvm->fw); 2923 2924 if (IS_ERR_OR_NULL(vif)) 2925 return; 2926 2927 if (len < sizeof(struct iwl_scan_offload_match_info)) { 2928 IWL_ERR(mvm, "Invalid scan match info notification\n"); 2929 return; 2930 } 2931 2932 if (!mvm->net_detect) { 2933 IWL_ERR(mvm, "Unexpected scan match info notification\n"); 2934 return; 2935 } 2936 2937 if (!status || status->wakeup_reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) { 2938 IWL_ERR(mvm, 2939 "Ignore scan match info notification: no reason\n"); 2940 return; 2941 } 2942 2943 #ifdef CONFIG_IWLWIFI_DEBUGFS 2944 mvm->last_netdetect_scans = le32_to_cpu(notif->n_scans_done); 2945 #endif 2946 2947 results->matched_profiles = le32_to_cpu(notif->matched_profiles); 2948 IWL_INFO(mvm, "number of matched profiles=%u\n", 2949 results->matched_profiles); 2950 2951 if (results->matched_profiles) { 2952 memcpy(results->matches, notif->matches, matches_len); 2953 d3_data->nd_results_valid = TRUE; 2954 } 2955 2956 /* no scan should be active at this point */ 2957 mvm->scan_status = 0; 2958 for (i = 0; i < mvm->max_scans; i++) 2959 mvm->scan_uid_status[i] = 0; 2960 } 2961 2962 static bool iwl_mvm_wait_d3_notif(struct iwl_notif_wait_data *notif_wait, 2963 struct iwl_rx_packet *pkt, void *data) 2964 { 2965 struct iwl_mvm *mvm = 2966 container_of(notif_wait, struct iwl_mvm, notif_wait); 2967 struct iwl_d3_data *d3_data = data; 2968 u32 len = iwl_rx_packet_payload_len(pkt); 2969 int ret; 2970 int wowlan_info_ver = iwl_fw_lookup_notif_ver(mvm->fw, 2971 PROT_OFFLOAD_GROUP, 2972 WOWLAN_INFO_NOTIFICATION, 2973 IWL_FW_CMD_VER_UNKNOWN); 2974 2975 2976 switch (WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) { 2977 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION): { 2978 2979 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_INFO) { 2980 /* We might get two notifications due to dual bss */ 2981 IWL_DEBUG_WOWLAN(mvm, 2982 "Got additional wowlan info notification\n"); 2983 break; 2984 } 2985 2986 if (wowlan_info_ver < 2) { 2987 struct iwl_wowlan_info_notif_v1 *notif_v1 = 2988 (void *)pkt->data; 2989 struct iwl_wowlan_info_notif_v2 *notif_v2; 2990 2991 notif_v2 = kmemdup(notif_v1, sizeof(*notif_v2), GFP_ATOMIC); 2992 2993 if (!notif_v2) 2994 return false; 2995 2996 notif_v2->tid_tear_down = notif_v1->tid_tear_down; 2997 notif_v2->station_id = notif_v1->station_id; 2998 memset_after(notif_v2, 0, station_id); 2999 iwl_mvm_parse_wowlan_info_notif_v2(mvm, notif_v2, 3000 d3_data->status, 3001 len); 3002 kfree(notif_v2); 3003 3004 } else if (wowlan_info_ver == 2) { 3005 struct iwl_wowlan_info_notif_v2 *notif_v2 = 3006 (void *)pkt->data; 3007 3008 iwl_mvm_parse_wowlan_info_notif_v2(mvm, notif_v2, 3009 d3_data->status, 3010 len); 3011 } else { 3012 struct iwl_wowlan_info_notif *notif = 3013 (void *)pkt->data; 3014 3015 iwl_mvm_parse_wowlan_info_notif(mvm, notif, 3016 d3_data->status, len); 3017 } 3018 3019 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_INFO; 3020 3021 if (d3_data->status && 3022 d3_data->status->wakeup_reasons & IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT) 3023 /* We are supposed to get also wake packet notif */ 3024 d3_data->notif_expected |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT; 3025 3026 break; 3027 } 3028 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION): { 3029 struct iwl_wowlan_wake_pkt_notif *notif = (void *)pkt->data; 3030 3031 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_WAKE_PKT) { 3032 /* We shouldn't get two wake packet notifications */ 3033 IWL_ERR(mvm, 3034 "Got additional wowlan wake packet notification\n"); 3035 } else { 3036 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT; 3037 len = iwl_rx_packet_payload_len(pkt); 3038 ret = iwl_mvm_wowlan_store_wake_pkt(mvm, notif, 3039 d3_data->status, 3040 len); 3041 if (ret) 3042 IWL_ERR(mvm, 3043 "Can't parse WOWLAN_WAKE_PKT_NOTIFICATION\n"); 3044 } 3045 3046 break; 3047 } 3048 case WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF): { 3049 struct iwl_scan_offload_match_info *notif = (void *)pkt->data; 3050 3051 if (d3_data->notif_received & IWL_D3_ND_MATCH_INFO) { 3052 IWL_ERR(mvm, 3053 "Got additional netdetect match info\n"); 3054 break; 3055 } 3056 3057 d3_data->notif_received |= IWL_D3_ND_MATCH_INFO; 3058 3059 /* explicitly set this in the 'expected' as well */ 3060 d3_data->notif_expected |= IWL_D3_ND_MATCH_INFO; 3061 3062 len = iwl_rx_packet_payload_len(pkt); 3063 iwl_mvm_nd_match_info_handler(mvm, d3_data, notif, len); 3064 break; 3065 } 3066 case WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION): { 3067 struct iwl_mvm_d3_end_notif *notif = (void *)pkt->data; 3068 3069 d3_data->d3_end_flags = __le32_to_cpu(notif->flags); 3070 d3_data->notif_received |= IWL_D3_NOTIF_D3_END_NOTIF; 3071 3072 break; 3073 } 3074 default: 3075 WARN_ON(1); 3076 } 3077 3078 return d3_data->notif_received == d3_data->notif_expected; 3079 } 3080 3081 static int iwl_mvm_resume_firmware(struct iwl_mvm *mvm, bool test) 3082 { 3083 int ret; 3084 enum iwl_d3_status d3_status; 3085 struct iwl_host_cmd cmd = { 3086 .id = D0I3_END_CMD, 3087 .flags = CMD_WANT_SKB | CMD_SEND_IN_D3, 3088 }; 3089 bool reset = fw_has_capa(&mvm->fw->ucode_capa, 3090 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 3091 3092 ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, !reset); 3093 if (ret) 3094 return ret; 3095 3096 if (d3_status != IWL_D3_STATUS_ALIVE) { 3097 IWL_INFO(mvm, "Device was reset during suspend\n"); 3098 return -ENOENT; 3099 } 3100 3101 /* 3102 * We should trigger resume flow using command only for 22000 family 3103 * AX210 and above don't need the command since they have 3104 * the doorbell interrupt. 3105 */ 3106 if (mvm->trans->trans_cfg->device_family <= IWL_DEVICE_FAMILY_22000 && 3107 fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_D0I3_END_FIRST)) { 3108 ret = iwl_mvm_send_cmd(mvm, &cmd); 3109 if (ret < 0) 3110 IWL_ERR(mvm, "Failed to send D0I3_END_CMD first (%d)\n", 3111 ret); 3112 } 3113 3114 return ret; 3115 } 3116 3117 #define IWL_MVM_D3_NOTIF_TIMEOUT (HZ / 5) 3118 3119 static int iwl_mvm_d3_notif_wait(struct iwl_mvm *mvm, 3120 struct iwl_d3_data *d3_data) 3121 { 3122 static const u16 d3_resume_notif[] = { 3123 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION), 3124 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION), 3125 WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF), 3126 WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION) 3127 }; 3128 struct iwl_notification_wait wait_d3_notif; 3129 int ret; 3130 3131 iwl_init_notification_wait(&mvm->notif_wait, &wait_d3_notif, 3132 d3_resume_notif, ARRAY_SIZE(d3_resume_notif), 3133 iwl_mvm_wait_d3_notif, d3_data); 3134 3135 ret = iwl_mvm_resume_firmware(mvm, d3_data->test); 3136 if (ret) { 3137 iwl_remove_notification(&mvm->notif_wait, &wait_d3_notif); 3138 return ret; 3139 } 3140 3141 return iwl_wait_notification(&mvm->notif_wait, &wait_d3_notif, 3142 IWL_MVM_D3_NOTIF_TIMEOUT); 3143 } 3144 3145 static inline bool iwl_mvm_d3_resume_notif_based(struct iwl_mvm *mvm) 3146 { 3147 return iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3148 WOWLAN_INFO_NOTIFICATION, 0) && 3149 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3150 WOWLAN_WAKE_PKT_NOTIFICATION, 0) && 3151 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3152 D3_END_NOTIFICATION, 0); 3153 } 3154 3155 static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test) 3156 { 3157 struct ieee80211_vif *vif = NULL; 3158 int ret = 1; 3159 struct iwl_mvm_nd_results results = {}; 3160 struct iwl_d3_data d3_data = { 3161 .test = test, 3162 .notif_expected = 3163 IWL_D3_NOTIF_WOWLAN_INFO | 3164 IWL_D3_NOTIF_D3_END_NOTIF, 3165 .nd_results_valid = false, 3166 .nd_results = &results, 3167 }; 3168 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 3169 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 3170 bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa, 3171 IWL_UCODE_TLV_CAPA_D0I3_END_FIRST); 3172 bool resume_notif_based = iwl_mvm_d3_resume_notif_based(mvm); 3173 bool keep = false; 3174 3175 mutex_lock(&mvm->mutex); 3176 3177 mvm->last_reset_or_resume_time_jiffies = jiffies; 3178 3179 /* get the BSS vif pointer again */ 3180 vif = iwl_mvm_get_bss_vif(mvm); 3181 if (IS_ERR_OR_NULL(vif)) 3182 goto err; 3183 3184 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt); 3185 3186 if (iwl_mvm_check_rt_status(mvm, vif)) { 3187 set_bit(STATUS_FW_ERROR, &mvm->trans->status); 3188 iwl_mvm_dump_nic_error_log(mvm); 3189 iwl_dbg_tlv_time_point(&mvm->fwrt, 3190 IWL_FW_INI_TIME_POINT_FW_ASSERT, NULL); 3191 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert, 3192 false, 0); 3193 ret = 1; 3194 goto err; 3195 } 3196 3197 if (resume_notif_based) { 3198 d3_data.status = kzalloc(sizeof(*d3_data.status), GFP_KERNEL); 3199 if (!d3_data.status) { 3200 IWL_ERR(mvm, "Failed to allocate wowlan status\n"); 3201 ret = -ENOMEM; 3202 goto err; 3203 } 3204 3205 ret = iwl_mvm_d3_notif_wait(mvm, &d3_data); 3206 if (ret) 3207 goto err; 3208 } else { 3209 ret = iwl_mvm_resume_firmware(mvm, test); 3210 if (ret < 0) 3211 goto err; 3212 } 3213 3214 /* after the successful handshake, we're out of D3 */ 3215 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED; 3216 3217 /* when reset is required we can't send these following commands */ 3218 if (d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE) 3219 goto query_wakeup_reasons; 3220 3221 /* 3222 * Query the current location and source from the D3 firmware so we 3223 * can play it back when we re-intiailize the D0 firmware 3224 */ 3225 iwl_mvm_update_changed_regdom(mvm); 3226 3227 /* Re-configure PPAG settings */ 3228 iwl_mvm_ppag_send_cmd(mvm); 3229 3230 if (!unified_image) 3231 /* Re-configure default SAR profile */ 3232 iwl_mvm_sar_select_profile(mvm, 1, 1); 3233 3234 if (mvm->net_detect && unified_image) { 3235 /* If this is a non-unified image, we restart the FW, 3236 * so no need to stop the netdetect scan. If that 3237 * fails, continue and try to get the wake-up reasons, 3238 * but trigger a HW restart by keeping a failure code 3239 * in ret. 3240 */ 3241 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT, 3242 false); 3243 } 3244 3245 query_wakeup_reasons: 3246 keep = iwl_mvm_choose_query_wakeup_reasons(mvm, vif, &d3_data); 3247 /* has unlocked the mutex, so skip that */ 3248 goto out; 3249 3250 err: 3251 mutex_unlock(&mvm->mutex); 3252 out: 3253 if (d3_data.status) 3254 kfree(d3_data.status->wake_packet); 3255 kfree(d3_data.status); 3256 iwl_mvm_free_nd(mvm); 3257 3258 if (!d3_data.test && !mvm->net_detect) 3259 ieee80211_iterate_active_interfaces_mtx(mvm->hw, 3260 IEEE80211_IFACE_ITER_NORMAL, 3261 iwl_mvm_d3_disconnect_iter, 3262 keep ? vif : NULL); 3263 3264 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); 3265 3266 /* no need to reset the device in unified images, if successful */ 3267 if (unified_image && !ret) { 3268 /* nothing else to do if we already sent D0I3_END_CMD */ 3269 if (d0i3_first) 3270 return 0; 3271 3272 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, 3273 D3_END_NOTIFICATION, 0)) { 3274 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL); 3275 if (!ret) 3276 return 0; 3277 } else if (!(d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)) { 3278 return 0; 3279 } 3280 } 3281 3282 /* 3283 * Reconfigure the device in one of the following cases: 3284 * 1. We are not using a unified image 3285 * 2. We are using a unified image but had an error while exiting D3 3286 */ 3287 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); 3288 3289 /* regardless of what happened, we're now out of D3 */ 3290 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED; 3291 3292 return 1; 3293 } 3294 3295 int iwl_mvm_resume(struct ieee80211_hw *hw) 3296 { 3297 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3298 int ret; 3299 3300 ret = __iwl_mvm_resume(mvm, false); 3301 3302 iwl_mvm_resume_tcm(mvm); 3303 3304 iwl_fw_runtime_resume(&mvm->fwrt); 3305 3306 return ret; 3307 } 3308 3309 void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled) 3310 { 3311 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3312 3313 device_set_wakeup_enable(mvm->trans->dev, enabled); 3314 } 3315 3316 #ifdef CONFIG_IWLWIFI_DEBUGFS 3317 static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file) 3318 { 3319 struct iwl_mvm *mvm = inode->i_private; 3320 int err; 3321 3322 if (mvm->d3_test_active) 3323 return -EBUSY; 3324 3325 file->private_data = inode->i_private; 3326 3327 iwl_mvm_pause_tcm(mvm, true); 3328 3329 iwl_fw_runtime_suspend(&mvm->fwrt); 3330 3331 /* start pseudo D3 */ 3332 rtnl_lock(); 3333 wiphy_lock(mvm->hw->wiphy); 3334 err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true); 3335 wiphy_unlock(mvm->hw->wiphy); 3336 rtnl_unlock(); 3337 if (err > 0) 3338 err = -EINVAL; 3339 if (err) 3340 return err; 3341 3342 mvm->d3_test_active = true; 3343 mvm->keep_vif = NULL; 3344 return 0; 3345 } 3346 3347 static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf, 3348 size_t count, loff_t *ppos) 3349 { 3350 struct iwl_mvm *mvm = file->private_data; 3351 u32 pme_asserted; 3352 3353 while (true) { 3354 /* read pme_ptr if available */ 3355 if (mvm->d3_test_pme_ptr) { 3356 pme_asserted = iwl_trans_read_mem32(mvm->trans, 3357 mvm->d3_test_pme_ptr); 3358 if (pme_asserted) 3359 break; 3360 } 3361 3362 if (msleep_interruptible(100)) 3363 break; 3364 } 3365 3366 return 0; 3367 } 3368 3369 static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac, 3370 struct ieee80211_vif *vif) 3371 { 3372 /* skip the one we keep connection on */ 3373 if (_data == vif) 3374 return; 3375 3376 if (vif->type == NL80211_IFTYPE_STATION) 3377 ieee80211_connection_loss(vif); 3378 } 3379 3380 static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file) 3381 { 3382 struct iwl_mvm *mvm = inode->i_private; 3383 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 3384 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 3385 3386 mvm->d3_test_active = false; 3387 3388 iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt); 3389 3390 rtnl_lock(); 3391 wiphy_lock(mvm->hw->wiphy); 3392 __iwl_mvm_resume(mvm, true); 3393 wiphy_unlock(mvm->hw->wiphy); 3394 rtnl_unlock(); 3395 3396 iwl_mvm_resume_tcm(mvm); 3397 3398 iwl_fw_runtime_resume(&mvm->fwrt); 3399 3400 iwl_abort_notification_waits(&mvm->notif_wait); 3401 if (!unified_image) { 3402 int remaining_time = 10; 3403 3404 ieee80211_restart_hw(mvm->hw); 3405 3406 /* wait for restart and disconnect all interfaces */ 3407 while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 3408 remaining_time > 0) { 3409 remaining_time--; 3410 msleep(1000); 3411 } 3412 3413 if (remaining_time == 0) 3414 IWL_ERR(mvm, "Timed out waiting for HW restart!\n"); 3415 } 3416 3417 ieee80211_iterate_active_interfaces_atomic( 3418 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 3419 iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif); 3420 3421 return 0; 3422 } 3423 3424 const struct file_operations iwl_dbgfs_d3_test_ops = { 3425 .llseek = no_llseek, 3426 .open = iwl_mvm_d3_test_open, 3427 .read = iwl_mvm_d3_test_read, 3428 .release = iwl_mvm_d3_test_release, 3429 }; 3430 #endif 3431