1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2024-2025 Intel Corporation 4 */ 5 #include "mld.h" 6 7 #include "d3.h" 8 #include "power.h" 9 #include "hcmd.h" 10 #include "iface.h" 11 #include "mcc.h" 12 #include "sta.h" 13 #include "mlo.h" 14 #include "key.h" 15 16 #include "fw/api/d3.h" 17 #include "fw/api/offload.h" 18 #include "fw/api/sta.h" 19 #include "fw/dbg.h" 20 21 #include <net/ipv6.h> 22 #include <net/addrconf.h> 23 #include <linux/bitops.h> 24 25 /** 26 * enum iwl_mld_d3_notif - d3 notifications 27 * @IWL_D3_NOTIF_WOWLAN_INFO: WOWLAN_INFO_NOTIF is expected/was received 28 * @IWL_D3_NOTIF_WOWLAN_WAKE_PKT: WOWLAN_WAKE_PKT_NOTIF is expected/was received 29 * @IWL_D3_NOTIF_PROT_OFFLOAD: PROT_OFFLOAD_NOTIF is expected/was received 30 * @IWL_D3_ND_MATCH_INFO: OFFLOAD_MATCH_INFO_NOTIF is expected/was received 31 * @IWL_D3_NOTIF_D3_END_NOTIF: D3_END_NOTIF is expected/was received 32 */ 33 enum iwl_mld_d3_notif { 34 IWL_D3_NOTIF_WOWLAN_INFO = BIT(0), 35 IWL_D3_NOTIF_WOWLAN_WAKE_PKT = BIT(1), 36 IWL_D3_NOTIF_PROT_OFFLOAD = BIT(2), 37 IWL_D3_ND_MATCH_INFO = BIT(3), 38 IWL_D3_NOTIF_D3_END_NOTIF = BIT(4) 39 }; 40 41 struct iwl_mld_resume_key_iter_data { 42 struct iwl_mld *mld; 43 struct iwl_mld_wowlan_status *wowlan_status; 44 u32 num_keys; 45 bool unhandled_cipher; 46 }; 47 48 struct iwl_mld_suspend_key_iter_data { 49 struct iwl_wowlan_rsc_tsc_params_cmd *rsc; 50 bool have_rsc; 51 int gtks; 52 int found_gtk_idx[4]; 53 __le32 gtk_cipher; 54 __le32 igtk_cipher; 55 __le32 bigtk_cipher; 56 }; 57 58 struct iwl_mld_mcast_key_data { 59 u8 key[WOWLAN_KEY_MAX_SIZE]; 60 u8 len; 61 u8 flags; 62 u8 id; 63 union { 64 struct { 65 struct ieee80211_key_seq aes_seq[IWL_MAX_TID_COUNT]; 66 struct ieee80211_key_seq tkip_seq[IWL_MAX_TID_COUNT]; 67 } gtk; 68 struct { 69 struct ieee80211_key_seq cmac_gmac_seq; 70 } igtk_bigtk; 71 }; 72 73 }; 74 75 struct iwl_mld_wowlan_mlo_key { 76 u8 key[WOWLAN_KEY_MAX_SIZE]; 77 u8 idx, type, link_id; 78 u8 pn[6]; 79 }; 80 81 /** 82 * struct iwl_mld_wowlan_status - contains wowlan status data from 83 * all wowlan notifications 84 * @wakeup_reasons: wakeup reasons, see &enum iwl_wowlan_wakeup_reason 85 * @replay_ctr: GTK rekey replay counter 86 * @pattern_number: number of the matched patterns on packets 87 * @last_qos_seq: QoS sequence counter of offloaded tid 88 * @num_of_gtk_rekeys: number of GTK rekeys during D3 89 * @tid_offloaded_tx: tid used by the firmware to transmit data packets 90 * while in wowlan 91 * @wake_packet: wakeup packet received 92 * @wake_packet_length: wake packet length 93 * @wake_packet_bufsize: wake packet bufsize 94 * @gtk: data of the last two used gtk's by the FW upon resume 95 * @igtk: data of the last used igtk by the FW upon resume 96 * @bigtk: data of the last two used gtk's by the FW upon resume 97 * @ptk: last seq numbers per tid passed by the FW, 98 * holds both in tkip and aes formats 99 * @num_mlo_keys: number of &struct iwl_mld_wowlan_mlo_key structs 100 * @mlo_keys: array of MLO keys 101 */ 102 struct iwl_mld_wowlan_status { 103 u32 wakeup_reasons; 104 u64 replay_ctr; 105 u16 pattern_number; 106 u16 last_qos_seq; 107 u32 num_of_gtk_rekeys; 108 u8 tid_offloaded_tx; 109 u8 *wake_packet; 110 u32 wake_packet_length; 111 u32 wake_packet_bufsize; 112 struct iwl_mld_mcast_key_data gtk[WOWLAN_GTK_KEYS_NUM]; 113 struct iwl_mld_mcast_key_data igtk; 114 struct iwl_mld_mcast_key_data bigtk[WOWLAN_BIGTK_KEYS_NUM]; 115 struct { 116 struct ieee80211_key_seq aes_seq[IWL_MAX_TID_COUNT]; 117 struct ieee80211_key_seq tkip_seq[IWL_MAX_TID_COUNT]; 118 119 } ptk; 120 121 int num_mlo_keys; 122 struct iwl_mld_wowlan_mlo_key mlo_keys[WOWLAN_MAX_MLO_KEYS]; 123 }; 124 125 #define NETDETECT_QUERY_BUF_LEN \ 126 (sizeof(struct iwl_scan_offload_profile_match) * \ 127 IWL_SCAN_MAX_PROFILES_V2) 128 129 /** 130 * struct iwl_mld_netdetect_res - contains netdetect results from 131 * match_info_notif 132 * @matched_profiles: bitmap of matched profiles, referencing the 133 * matches passed in the scan offload request 134 * @matches: array of match information, one for each match 135 */ 136 struct iwl_mld_netdetect_res { 137 u32 matched_profiles; 138 u8 matches[NETDETECT_QUERY_BUF_LEN]; 139 }; 140 141 /** 142 * struct iwl_mld_resume_data - d3 resume flow data 143 * @notifs_expected: bitmap of expected notifications from fw, 144 * see &enum iwl_mld_d3_notif 145 * @notifs_received: bitmap of received notifications from fw, 146 * see &enum iwl_mld_d3_notif 147 * @d3_end_flags: bitmap of flags from d3_end_notif 148 * @notif_handling_err: error handling one of the resume notifications 149 * @wowlan_status: wowlan status data from all wowlan notifications 150 * @netdetect_res: contains netdetect results from match_info_notif 151 */ 152 struct iwl_mld_resume_data { 153 u32 notifs_expected; 154 u32 notifs_received; 155 u32 d3_end_flags; 156 bool notif_handling_err; 157 struct iwl_mld_wowlan_status *wowlan_status; 158 struct iwl_mld_netdetect_res *netdetect_res; 159 }; 160 161 #define IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT \ 162 (IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET | \ 163 IWL_WOWLAN_WAKEUP_BY_PATTERN | \ 164 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN |\ 165 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN_WILDCARD |\ 166 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN |\ 167 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN_WILDCARD) 168 169 #define IWL_WOWLAN_OFFLOAD_TID 0 170 171 void iwl_mld_set_rekey_data(struct ieee80211_hw *hw, 172 struct ieee80211_vif *vif, 173 struct cfg80211_gtk_rekey_data *data) 174 { 175 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 176 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 177 struct iwl_mld_wowlan_data *wowlan_data = &mld_vif->wowlan_data; 178 179 lockdep_assert_wiphy(mld->wiphy); 180 181 wowlan_data->rekey_data.kek_len = data->kek_len; 182 wowlan_data->rekey_data.kck_len = data->kck_len; 183 memcpy(wowlan_data->rekey_data.kek, data->kek, data->kek_len); 184 memcpy(wowlan_data->rekey_data.kck, data->kck, data->kck_len); 185 wowlan_data->rekey_data.akm = data->akm & 0xFF; 186 wowlan_data->rekey_data.replay_ctr = 187 cpu_to_le64(be64_to_cpup((const __be64 *)data->replay_ctr)); 188 wowlan_data->rekey_data.valid = true; 189 } 190 191 #if IS_ENABLED(CONFIG_IPV6) 192 void iwl_mld_ipv6_addr_change(struct ieee80211_hw *hw, 193 struct ieee80211_vif *vif, 194 struct inet6_dev *idev) 195 { 196 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 197 struct iwl_mld_wowlan_data *wowlan_data = &mld_vif->wowlan_data; 198 struct inet6_ifaddr *ifa; 199 int idx = 0; 200 201 memset(wowlan_data->tentative_addrs, 0, 202 sizeof(wowlan_data->tentative_addrs)); 203 204 read_lock_bh(&idev->lock); 205 list_for_each_entry(ifa, &idev->addr_list, if_list) { 206 wowlan_data->target_ipv6_addrs[idx] = ifa->addr; 207 if (ifa->flags & IFA_F_TENTATIVE) 208 __set_bit(idx, wowlan_data->tentative_addrs); 209 idx++; 210 if (idx >= IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_MAX) 211 break; 212 } 213 read_unlock_bh(&idev->lock); 214 215 wowlan_data->num_target_ipv6_addrs = idx; 216 } 217 #endif 218 219 static int 220 iwl_mld_netdetect_config(struct iwl_mld *mld, 221 struct ieee80211_vif *vif, 222 const struct cfg80211_wowlan *wowlan) 223 { 224 int ret; 225 struct cfg80211_sched_scan_request *netdetect_cfg = 226 wowlan->nd_config; 227 struct ieee80211_scan_ies ies = {}; 228 229 ret = iwl_mld_scan_stop(mld, IWL_MLD_SCAN_SCHED, true); 230 if (ret) 231 return ret; 232 233 ret = iwl_mld_sched_scan_start(mld, vif, netdetect_cfg, &ies, 234 IWL_MLD_SCAN_NETDETECT); 235 return ret; 236 } 237 238 static void 239 iwl_mld_le64_to_tkip_seq(__le64 le_pn, struct ieee80211_key_seq *seq) 240 { 241 u64 pn = le64_to_cpu(le_pn); 242 243 seq->tkip.iv16 = (u16)pn; 244 seq->tkip.iv32 = (u32)(pn >> 16); 245 } 246 247 static void 248 iwl_mld_le64_to_aes_seq(__le64 le_pn, struct ieee80211_key_seq *seq) 249 { 250 u64 pn = le64_to_cpu(le_pn); 251 252 seq->ccmp.pn[0] = pn >> 40; 253 seq->ccmp.pn[1] = pn >> 32; 254 seq->ccmp.pn[2] = pn >> 24; 255 seq->ccmp.pn[3] = pn >> 16; 256 seq->ccmp.pn[4] = pn >> 8; 257 seq->ccmp.pn[5] = pn; 258 } 259 260 static void 261 iwl_mld_convert_gtk_resume_seq(struct iwl_mld_mcast_key_data *gtk_data, 262 const struct iwl_wowlan_all_rsc_tsc_v5 *sc, 263 int rsc_idx) 264 { 265 struct ieee80211_key_seq *aes_seq = gtk_data->gtk.aes_seq; 266 struct ieee80211_key_seq *tkip_seq = gtk_data->gtk.tkip_seq; 267 268 if (rsc_idx >= ARRAY_SIZE(sc->mcast_rsc)) 269 return; 270 271 /* We store both the TKIP and AES representations coming from the 272 * FW because we decode the data from there before we iterate 273 * the keys and know which type is used. 274 */ 275 for (int tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 276 iwl_mld_le64_to_tkip_seq(sc->mcast_rsc[rsc_idx][tid], 277 &tkip_seq[tid]); 278 iwl_mld_le64_to_aes_seq(sc->mcast_rsc[rsc_idx][tid], 279 &aes_seq[tid]); 280 } 281 } 282 283 static void 284 iwl_mld_convert_gtk_resume_data(struct iwl_mld *mld, 285 struct iwl_mld_wowlan_status *wowlan_status, 286 const struct iwl_wowlan_gtk_status_v3 *gtk_data, 287 const struct iwl_wowlan_all_rsc_tsc_v5 *sc) 288 { 289 int status_idx = 0; 290 291 BUILD_BUG_ON(sizeof(wowlan_status->gtk[0].key) < 292 sizeof(gtk_data[0].key)); 293 BUILD_BUG_ON(ARRAY_SIZE(wowlan_status->gtk) < WOWLAN_GTK_KEYS_NUM); 294 295 for (int notif_idx = 0; notif_idx < ARRAY_SIZE(wowlan_status->gtk); 296 notif_idx++) { 297 int rsc_idx; 298 299 if (!(gtk_data[notif_idx].key_len)) 300 continue; 301 302 wowlan_status->gtk[status_idx].len = 303 gtk_data[notif_idx].key_len; 304 wowlan_status->gtk[status_idx].flags = 305 gtk_data[notif_idx].key_flags; 306 wowlan_status->gtk[status_idx].id = 307 wowlan_status->gtk[status_idx].flags & 308 IWL_WOWLAN_GTK_IDX_MASK; 309 memcpy(wowlan_status->gtk[status_idx].key, 310 gtk_data[notif_idx].key, 311 sizeof(gtk_data[notif_idx].key)); 312 313 /* The rsc for both gtk keys are stored in gtk[0]->sc->mcast_rsc 314 * The gtk ids can be any two numbers between 0 and 3, 315 * the id_map maps between the key id and the index in sc->mcast 316 */ 317 rsc_idx = 318 sc->mcast_key_id_map[wowlan_status->gtk[status_idx].id]; 319 iwl_mld_convert_gtk_resume_seq(&wowlan_status->gtk[status_idx], 320 sc, rsc_idx); 321 322 /* if it's as long as the TKIP encryption key, copy MIC key */ 323 if (wowlan_status->gtk[status_idx].len == 324 NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY) 325 memcpy(wowlan_status->gtk[status_idx].key + 326 NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 327 gtk_data[notif_idx].tkip_mic_key, 328 sizeof(gtk_data[notif_idx].tkip_mic_key)); 329 status_idx++; 330 } 331 } 332 333 static void 334 iwl_mld_convert_ptk_resume_seq(struct iwl_mld *mld, 335 struct iwl_mld_wowlan_status *wowlan_status, 336 const struct iwl_wowlan_all_rsc_tsc_v5 *sc) 337 { 338 struct ieee80211_key_seq *aes_seq = wowlan_status->ptk.aes_seq; 339 struct ieee80211_key_seq *tkip_seq = wowlan_status->ptk.tkip_seq; 340 341 BUILD_BUG_ON(ARRAY_SIZE(sc->ucast_rsc) != IWL_MAX_TID_COUNT); 342 343 for (int tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 344 iwl_mld_le64_to_aes_seq(sc->ucast_rsc[tid], &aes_seq[tid]); 345 iwl_mld_le64_to_tkip_seq(sc->ucast_rsc[tid], &tkip_seq[tid]); 346 } 347 } 348 349 static void 350 iwl_mld_convert_mcast_ipn(struct iwl_mld_mcast_key_data *key_status, 351 const struct iwl_wowlan_igtk_status *key) 352 { 353 struct ieee80211_key_seq *seq = 354 &key_status->igtk_bigtk.cmac_gmac_seq; 355 u8 ipn_len = ARRAY_SIZE(key->ipn); 356 357 BUILD_BUG_ON(ipn_len != ARRAY_SIZE(seq->aes_gmac.pn)); 358 BUILD_BUG_ON(ipn_len != ARRAY_SIZE(seq->aes_cmac.pn)); 359 BUILD_BUG_ON(offsetof(struct ieee80211_key_seq, aes_gmac) != 360 offsetof(struct ieee80211_key_seq, aes_cmac)); 361 362 /* mac80211 expects big endian for memcmp() to work, convert. 363 * We don't have the key cipher yet so copy to both to cmac and gmac 364 */ 365 for (int i = 0; i < ipn_len; i++) { 366 seq->aes_gmac.pn[i] = key->ipn[ipn_len - i - 1]; 367 seq->aes_cmac.pn[i] = key->ipn[ipn_len - i - 1]; 368 } 369 } 370 371 static void 372 iwl_mld_convert_igtk_resume_data(struct iwl_mld_wowlan_status *wowlan_status, 373 const struct iwl_wowlan_igtk_status *igtk) 374 { 375 BUILD_BUG_ON(sizeof(wowlan_status->igtk.key) < sizeof(igtk->key)); 376 377 if (!igtk->key_len) 378 return; 379 380 wowlan_status->igtk.len = igtk->key_len; 381 wowlan_status->igtk.flags = igtk->key_flags; 382 wowlan_status->igtk.id = 383 u32_get_bits(igtk->key_flags, 384 IWL_WOWLAN_IGTK_BIGTK_IDX_MASK) + 385 WOWLAN_IGTK_MIN_INDEX; 386 387 memcpy(wowlan_status->igtk.key, igtk->key, sizeof(igtk->key)); 388 iwl_mld_convert_mcast_ipn(&wowlan_status->igtk, igtk); 389 } 390 391 static void 392 iwl_mld_convert_bigtk_resume_data(struct iwl_mld_wowlan_status *wowlan_status, 393 const struct iwl_wowlan_igtk_status *bigtk) 394 { 395 int status_idx = 0; 396 397 BUILD_BUG_ON(ARRAY_SIZE(wowlan_status->bigtk) < WOWLAN_BIGTK_KEYS_NUM); 398 399 for (int notif_idx = 0; notif_idx < WOWLAN_BIGTK_KEYS_NUM; 400 notif_idx++) { 401 if (!bigtk[notif_idx].key_len) 402 continue; 403 404 wowlan_status->bigtk[status_idx].len = bigtk[notif_idx].key_len; 405 wowlan_status->bigtk[status_idx].flags = 406 bigtk[notif_idx].key_flags; 407 wowlan_status->bigtk[status_idx].id = 408 u32_get_bits(bigtk[notif_idx].key_flags, 409 IWL_WOWLAN_IGTK_BIGTK_IDX_MASK) 410 + WOWLAN_BIGTK_MIN_INDEX; 411 412 BUILD_BUG_ON(sizeof(wowlan_status->bigtk[status_idx].key) < 413 sizeof(bigtk[notif_idx].key)); 414 memcpy(wowlan_status->bigtk[status_idx].key, 415 bigtk[notif_idx].key, sizeof(bigtk[notif_idx].key)); 416 iwl_mld_convert_mcast_ipn(&wowlan_status->bigtk[status_idx], 417 &bigtk[notif_idx]); 418 status_idx++; 419 } 420 } 421 422 static void 423 iwl_mld_convert_mlo_keys(struct iwl_mld *mld, 424 const struct iwl_wowlan_info_notif *notif, 425 struct iwl_mld_wowlan_status *wowlan_status) 426 { 427 if (!notif->num_mlo_link_keys) 428 return; 429 430 wowlan_status->num_mlo_keys = notif->num_mlo_link_keys; 431 432 if (IWL_FW_CHECK(mld, wowlan_status->num_mlo_keys > WOWLAN_MAX_MLO_KEYS, 433 "Too many MLO keys: %d, max %d\n", 434 wowlan_status->num_mlo_keys, WOWLAN_MAX_MLO_KEYS)) 435 wowlan_status->num_mlo_keys = WOWLAN_MAX_MLO_KEYS; 436 437 for (int i = 0; i < wowlan_status->num_mlo_keys; i++) { 438 const struct iwl_wowlan_mlo_gtk *fw_mlo_key = ¬if->mlo_gtks[i]; 439 struct iwl_mld_wowlan_mlo_key *driver_mlo_key = 440 &wowlan_status->mlo_keys[i]; 441 u16 flags = le16_to_cpu(fw_mlo_key->flags); 442 443 driver_mlo_key->link_id = 444 u16_get_bits(flags, WOWLAN_MLO_GTK_FLAG_LINK_ID_MSK); 445 driver_mlo_key->type = 446 u16_get_bits(flags, WOWLAN_MLO_GTK_FLAG_KEY_TYPE_MSK); 447 driver_mlo_key->idx = 448 u16_get_bits(flags, WOWLAN_MLO_GTK_FLAG_KEY_ID_MSK); 449 450 BUILD_BUG_ON(sizeof(driver_mlo_key->key) != sizeof(fw_mlo_key->key)); 451 BUILD_BUG_ON(sizeof(driver_mlo_key->pn) != sizeof(fw_mlo_key->pn)); 452 453 memcpy(driver_mlo_key->key, fw_mlo_key->key, sizeof(fw_mlo_key->key)); 454 memcpy(driver_mlo_key->pn, fw_mlo_key->pn, sizeof(fw_mlo_key->pn)); 455 } 456 } 457 458 static bool 459 iwl_mld_handle_wowlan_info_notif(struct iwl_mld *mld, 460 struct iwl_mld_wowlan_status *wowlan_status, 461 struct iwl_rx_packet *pkt) 462 { 463 const struct iwl_wowlan_info_notif *notif = (void *)pkt->data; 464 u32 len = iwl_rx_packet_payload_len(pkt); 465 u32 len_with_mlo_keys; 466 467 if (IWL_FW_CHECK(mld, len < sizeof(*notif), 468 "Invalid wowlan_info_notif (expected=%zu got=%u)\n", 469 sizeof(*notif), len)) 470 return true; 471 472 /* Now that we know that we have at least sizeof(notif), 473 * check also the variable length part 474 */ 475 len_with_mlo_keys = sizeof(*notif) + 476 notif->num_mlo_link_keys * sizeof(notif->mlo_gtks[0]); 477 478 if (IWL_FW_CHECK(mld, len < len_with_mlo_keys, 479 "Invalid wowlan_info_notif (expected=%ud got=%u)\n", 480 len_with_mlo_keys, len)) 481 return true; 482 483 if (IWL_FW_CHECK(mld, notif->tid_offloaded_tx != IWL_WOWLAN_OFFLOAD_TID, 484 "Invalid tid_offloaded_tx %d\n", 485 wowlan_status->tid_offloaded_tx)) 486 return true; 487 488 iwl_mld_convert_gtk_resume_data(mld, wowlan_status, notif->gtk, 489 ¬if->gtk[0].sc); 490 iwl_mld_convert_ptk_resume_seq(mld, wowlan_status, ¬if->gtk[0].sc); 491 /* only one igtk is passed by FW */ 492 iwl_mld_convert_igtk_resume_data(wowlan_status, ¬if->igtk[0]); 493 iwl_mld_convert_bigtk_resume_data(wowlan_status, notif->bigtk); 494 495 wowlan_status->replay_ctr = le64_to_cpu(notif->replay_ctr); 496 wowlan_status->pattern_number = le16_to_cpu(notif->pattern_number); 497 498 wowlan_status->tid_offloaded_tx = notif->tid_offloaded_tx; 499 wowlan_status->last_qos_seq = le16_to_cpu(notif->qos_seq_ctr); 500 wowlan_status->num_of_gtk_rekeys = 501 le32_to_cpu(notif->num_of_gtk_rekeys); 502 wowlan_status->wakeup_reasons = le32_to_cpu(notif->wakeup_reasons); 503 504 iwl_mld_convert_mlo_keys(mld, notif, wowlan_status); 505 506 return false; 507 } 508 509 static bool 510 iwl_mld_handle_wake_pkt_notif(struct iwl_mld *mld, 511 struct iwl_mld_wowlan_status *wowlan_status, 512 struct iwl_rx_packet *pkt) 513 { 514 const struct iwl_wowlan_wake_pkt_notif *notif = (void *)pkt->data; 515 u32 actual_size, len = iwl_rx_packet_payload_len(pkt); 516 u32 expected_size = le32_to_cpu(notif->wake_packet_length); 517 518 if (IWL_FW_CHECK(mld, len < sizeof(*notif), 519 "Invalid WoWLAN wake packet notification (expected size=%zu got=%u)\n", 520 sizeof(*notif), len)) 521 return true; 522 523 if (IWL_FW_CHECK(mld, !(wowlan_status->wakeup_reasons & 524 IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT), 525 "Got wake packet but wakeup reason is %x\n", 526 wowlan_status->wakeup_reasons)) 527 return true; 528 529 actual_size = len - offsetof(struct iwl_wowlan_wake_pkt_notif, 530 wake_packet); 531 532 /* actual_size got the padding from the notification, remove it. */ 533 if (expected_size < actual_size) 534 actual_size = expected_size; 535 wowlan_status->wake_packet = kmemdup(notif->wake_packet, actual_size, 536 GFP_ATOMIC); 537 if (!wowlan_status->wake_packet) 538 return true; 539 540 wowlan_status->wake_packet_length = expected_size; 541 wowlan_status->wake_packet_bufsize = actual_size; 542 543 return false; 544 } 545 546 static void 547 iwl_mld_set_wake_packet(struct iwl_mld *mld, 548 struct ieee80211_vif *vif, 549 const struct iwl_mld_wowlan_status *wowlan_status, 550 struct cfg80211_wowlan_wakeup *wakeup, 551 struct sk_buff **_pkt) 552 { 553 int pkt_bufsize = wowlan_status->wake_packet_bufsize; 554 int expected_pktlen = wowlan_status->wake_packet_length; 555 const u8 *pktdata = wowlan_status->wake_packet; 556 const struct ieee80211_hdr *hdr = (const void *)pktdata; 557 int truncated = expected_pktlen - pkt_bufsize; 558 559 if (ieee80211_is_data(hdr->frame_control)) { 560 int hdrlen = ieee80211_hdrlen(hdr->frame_control); 561 int ivlen = 0, icvlen = 4; /* also FCS */ 562 563 struct sk_buff *pkt = alloc_skb(pkt_bufsize, GFP_KERNEL); 564 *_pkt = pkt; 565 if (!pkt) 566 return; 567 568 skb_put_data(pkt, pktdata, hdrlen); 569 pktdata += hdrlen; 570 pkt_bufsize -= hdrlen; 571 572 /* if truncated, FCS/ICV is (partially) gone */ 573 if (truncated >= icvlen) { 574 truncated -= icvlen; 575 icvlen = 0; 576 } else { 577 icvlen -= truncated; 578 truncated = 0; 579 } 580 581 pkt_bufsize -= ivlen + icvlen; 582 pktdata += ivlen; 583 584 skb_put_data(pkt, pktdata, pkt_bufsize); 585 586 if (ieee80211_data_to_8023(pkt, vif->addr, vif->type)) 587 return; 588 wakeup->packet = pkt->data; 589 wakeup->packet_present_len = pkt->len; 590 wakeup->packet_len = pkt->len - truncated; 591 wakeup->packet_80211 = false; 592 } else { 593 int fcslen = 4; 594 595 if (truncated >= 4) { 596 truncated -= 4; 597 fcslen = 0; 598 } else { 599 fcslen -= truncated; 600 truncated = 0; 601 } 602 pkt_bufsize -= fcslen; 603 wakeup->packet = wowlan_status->wake_packet; 604 wakeup->packet_present_len = pkt_bufsize; 605 wakeup->packet_len = expected_pktlen - truncated; 606 wakeup->packet_80211 = true; 607 } 608 } 609 610 static void 611 iwl_mld_report_wowlan_wakeup(struct iwl_mld *mld, 612 struct ieee80211_vif *vif, 613 struct iwl_mld_wowlan_status *wowlan_status) 614 { 615 struct sk_buff *pkt = NULL; 616 struct cfg80211_wowlan_wakeup wakeup = { 617 .pattern_idx = -1, 618 }; 619 u32 reasons = wowlan_status->wakeup_reasons; 620 621 if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) { 622 ieee80211_report_wowlan_wakeup(vif, NULL, GFP_KERNEL); 623 return; 624 } 625 626 pm_wakeup_event(mld->dev, 0); 627 628 if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET) 629 wakeup.magic_pkt = true; 630 631 if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN) 632 wakeup.pattern_idx = 633 wowlan_status->pattern_number; 634 635 if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 636 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH | 637 IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)) 638 wakeup.disconnect = true; 639 640 if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE) 641 wakeup.gtk_rekey_failure = true; 642 643 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 644 wakeup.rfkill_release = true; 645 646 if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST) 647 wakeup.eap_identity_req = true; 648 649 if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE) 650 wakeup.four_way_handshake = true; 651 652 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS) 653 wakeup.tcp_connlost = true; 654 655 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE) 656 wakeup.tcp_nomoretokens = true; 657 658 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET) 659 wakeup.tcp_match = true; 660 661 if (reasons & IWL_WAKEUP_BY_11W_UNPROTECTED_DEAUTH_OR_DISASSOC) 662 wakeup.unprot_deauth_disassoc = true; 663 664 if (wowlan_status->wake_packet) 665 iwl_mld_set_wake_packet(mld, vif, wowlan_status, &wakeup, &pkt); 666 667 ieee80211_report_wowlan_wakeup(vif, &wakeup, GFP_KERNEL); 668 kfree_skb(pkt); 669 } 670 671 static void 672 iwl_mld_set_key_rx_seq_tids(struct ieee80211_key_conf *key, 673 struct ieee80211_key_seq *seq) 674 { 675 int tid; 676 677 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) 678 ieee80211_set_key_rx_seq(key, tid, &seq[tid]); 679 } 680 681 static void 682 iwl_mld_update_mcast_rx_seq(struct ieee80211_key_conf *key, 683 struct iwl_mld_mcast_key_data *key_data) 684 { 685 switch (key->cipher) { 686 case WLAN_CIPHER_SUITE_CCMP: 687 case WLAN_CIPHER_SUITE_GCMP: 688 case WLAN_CIPHER_SUITE_GCMP_256: 689 iwl_mld_set_key_rx_seq_tids(key, 690 key_data->gtk.aes_seq); 691 break; 692 case WLAN_CIPHER_SUITE_TKIP: 693 iwl_mld_set_key_rx_seq_tids(key, 694 key_data->gtk.tkip_seq); 695 break; 696 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 697 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 698 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 699 case WLAN_CIPHER_SUITE_AES_CMAC: 700 /* igtk/bigtk ciphers*/ 701 ieee80211_set_key_rx_seq(key, 0, 702 &key_data->igtk_bigtk.cmac_gmac_seq); 703 break; 704 default: 705 WARN_ON(1); 706 } 707 } 708 709 static void 710 iwl_mld_update_ptk_rx_seq(struct iwl_mld *mld, 711 struct iwl_mld_wowlan_status *wowlan_status, 712 struct ieee80211_sta *sta, 713 struct ieee80211_key_conf *key, 714 bool is_tkip) 715 { 716 struct iwl_mld_sta *mld_sta = 717 iwl_mld_sta_from_mac80211(sta); 718 struct iwl_mld_ptk_pn *mld_ptk_pn = 719 wiphy_dereference(mld->wiphy, 720 mld_sta->ptk_pn[key->keyidx]); 721 722 iwl_mld_set_key_rx_seq_tids(key, is_tkip ? 723 wowlan_status->ptk.tkip_seq : 724 wowlan_status->ptk.aes_seq); 725 if (is_tkip) 726 return; 727 728 if (WARN_ON(!mld_ptk_pn)) 729 return; 730 731 for (int tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 732 for (int i = 1; i < mld->trans->info.num_rxqs; i++) 733 memcpy(mld_ptk_pn->q[i].pn[tid], 734 wowlan_status->ptk.aes_seq[tid].ccmp.pn, 735 IEEE80211_CCMP_PN_LEN); 736 } 737 } 738 739 static void 740 iwl_mld_resume_keys_iter(struct ieee80211_hw *hw, 741 struct ieee80211_vif *vif, 742 struct ieee80211_sta *sta, 743 struct ieee80211_key_conf *key, 744 void *_data) 745 { 746 struct iwl_mld_resume_key_iter_data *data = _data; 747 struct iwl_mld_wowlan_status *wowlan_status = data->wowlan_status; 748 u8 status_idx; 749 750 if (data->unhandled_cipher) 751 return; 752 753 switch (key->cipher) { 754 case WLAN_CIPHER_SUITE_WEP40: 755 case WLAN_CIPHER_SUITE_WEP104: 756 /* ignore WEP completely, nothing to do */ 757 return; 758 case WLAN_CIPHER_SUITE_CCMP: 759 case WLAN_CIPHER_SUITE_GCMP: 760 case WLAN_CIPHER_SUITE_GCMP_256: 761 case WLAN_CIPHER_SUITE_TKIP: 762 if (sta) { 763 iwl_mld_update_ptk_rx_seq(data->mld, wowlan_status, 764 sta, key, 765 key->cipher == 766 WLAN_CIPHER_SUITE_TKIP); 767 return; 768 } 769 770 status_idx = key->keyidx == wowlan_status->gtk[1].id; 771 iwl_mld_update_mcast_rx_seq(key, &wowlan_status->gtk[status_idx]); 772 break; 773 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 774 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 775 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 776 case WLAN_CIPHER_SUITE_AES_CMAC: 777 if (key->keyidx == 4 || key->keyidx == 5) { 778 if (key->keyidx == wowlan_status->igtk.id) 779 iwl_mld_update_mcast_rx_seq(key, 780 &wowlan_status->igtk); 781 } 782 if (key->keyidx == 6 || key->keyidx == 7) { 783 status_idx = key->keyidx == wowlan_status->bigtk[1].id; 784 iwl_mld_update_mcast_rx_seq(key, 785 &wowlan_status->bigtk[status_idx]); 786 } 787 break; 788 default: 789 data->unhandled_cipher = true; 790 return; 791 } 792 data->num_keys++; 793 } 794 795 static void 796 iwl_mld_add_mcast_rekey(struct ieee80211_vif *vif, 797 struct iwl_mld *mld, 798 struct iwl_mld_mcast_key_data *key_data, 799 struct ieee80211_bss_conf *link_conf) 800 { 801 struct ieee80211_key_conf *key_config; 802 int link_id = vif->active_links ? __ffs(vif->active_links) : -1; 803 804 if (!key_data->len) 805 return; 806 807 key_config = ieee80211_gtk_rekey_add(vif, key_data->id, key_data->key, 808 sizeof(key_data->key), link_id); 809 if (IS_ERR(key_config)) 810 return; 811 812 iwl_mld_update_mcast_rx_seq(key_config, key_data); 813 814 /* The FW holds only one igtk so we keep track of the valid one */ 815 if (key_config->keyidx == 4 || key_config->keyidx == 5) { 816 struct iwl_mld_link *mld_link = 817 iwl_mld_link_from_mac80211(link_conf); 818 819 /* If we had more than one rekey, mac80211 will tell us to 820 * remove the old and add the new so we will update the IGTK in 821 * drv_set_key 822 */ 823 if (mld_link->igtk && mld_link->igtk != key_config) { 824 /* mark the old IGTK as not in FW */ 825 mld_link->igtk->hw_key_idx = STA_KEY_IDX_INVALID; 826 mld_link->igtk = key_config; 827 } 828 } 829 830 /* Also keep track of the new BIGTK */ 831 if (key_config->keyidx == 6 || key_config->keyidx == 7) 832 iwl_mld_track_bigtk(mld, vif, key_config, true); 833 } 834 835 static void 836 iwl_mld_add_all_rekeys(struct iwl_mld *mld, 837 struct ieee80211_vif *vif, 838 struct iwl_mld_wowlan_status *wowlan_status, 839 struct ieee80211_bss_conf *link_conf) 840 { 841 int i; 842 843 for (i = 0; i < ARRAY_SIZE(wowlan_status->gtk); i++) 844 iwl_mld_add_mcast_rekey(vif, mld, &wowlan_status->gtk[i], 845 link_conf); 846 847 iwl_mld_add_mcast_rekey(vif, mld, &wowlan_status->igtk, link_conf); 848 849 for (i = 0; i < ARRAY_SIZE(wowlan_status->bigtk); i++) 850 iwl_mld_add_mcast_rekey(vif, mld, &wowlan_status->bigtk[i], 851 link_conf); 852 } 853 854 static void iwl_mld_mlo_rekey(struct iwl_mld *mld, 855 struct iwl_mld_wowlan_status *wowlan_status, 856 struct ieee80211_vif *vif) 857 { 858 struct iwl_mld_old_mlo_keys *old_keys __free(kfree) = NULL; 859 860 IWL_DEBUG_WOWLAN(mld, "Num of MLO Keys: %d\n", wowlan_status->num_mlo_keys); 861 862 if (!wowlan_status->num_mlo_keys) 863 return; 864 865 for (int i = 0; i < wowlan_status->num_mlo_keys; i++) { 866 struct iwl_mld_wowlan_mlo_key *mlo_key = &wowlan_status->mlo_keys[i]; 867 struct ieee80211_key_conf *key; 868 struct ieee80211_key_seq seq; 869 u8 link_id = mlo_key->link_id; 870 871 if (IWL_FW_CHECK(mld, mlo_key->link_id >= IEEE80211_MLD_MAX_NUM_LINKS || 872 mlo_key->idx >= 8 || 873 mlo_key->type >= WOWLAN_MLO_GTK_KEY_NUM_TYPES, 874 "Invalid MLO key link_id %d, idx %d, type %d\n", 875 mlo_key->link_id, mlo_key->idx, mlo_key->type)) 876 continue; 877 878 if (!(vif->valid_links & BIT(link_id)) || 879 (vif->active_links & BIT(link_id))) 880 continue; 881 882 IWL_DEBUG_WOWLAN(mld, "Add MLO key id %d, link id %d\n", 883 mlo_key->idx, link_id); 884 885 key = ieee80211_gtk_rekey_add(vif, mlo_key->idx, mlo_key->key, 886 sizeof(mlo_key->key), link_id); 887 888 if (IS_ERR(key)) 889 continue; 890 891 /* 892 * mac80211 expects the PN in big-endian 893 * also note that seq is a union of all cipher types 894 * (ccmp, gcmp, cmac, gmac), and they all have the same 895 * pn field (of length 6) so just copy it to ccmp.pn. 896 */ 897 for (int j = 5; j >= 0; j--) 898 seq.ccmp.pn[5 - j] = mlo_key->pn[j]; 899 900 /* group keys are non-QoS and use TID 0 */ 901 ieee80211_set_key_rx_seq(key, 0, &seq); 902 } 903 } 904 905 static bool 906 iwl_mld_update_sec_keys(struct iwl_mld *mld, 907 struct ieee80211_vif *vif, 908 struct iwl_mld_wowlan_status *wowlan_status) 909 { 910 int link_id = vif->active_links ? __ffs(vif->active_links) : 0; 911 struct ieee80211_bss_conf *link_conf = 912 link_conf_dereference_protected(vif, link_id); 913 __be64 replay_ctr = cpu_to_be64(wowlan_status->replay_ctr); 914 struct iwl_mld_resume_key_iter_data key_iter_data = { 915 .mld = mld, 916 .wowlan_status = wowlan_status, 917 }; 918 919 if (WARN_ON(!link_conf)) 920 return false; 921 922 ieee80211_iter_keys(mld->hw, vif, iwl_mld_resume_keys_iter, 923 &key_iter_data); 924 925 if (key_iter_data.unhandled_cipher) 926 return false; 927 928 IWL_DEBUG_WOWLAN(mld, 929 "Number of installed keys: %d, Number of rekeys: %d\n", 930 key_iter_data.num_keys, 931 wowlan_status->num_of_gtk_rekeys); 932 933 if (!key_iter_data.num_keys || !wowlan_status->num_of_gtk_rekeys) 934 return true; 935 936 iwl_mld_add_all_rekeys(mld, vif, wowlan_status, 937 link_conf); 938 939 iwl_mld_mlo_rekey(mld, wowlan_status, vif); 940 941 ieee80211_gtk_rekey_notify(vif, link_conf->bssid, 942 (void *)&replay_ctr, GFP_KERNEL); 943 return true; 944 } 945 946 static bool 947 iwl_mld_process_wowlan_status(struct iwl_mld *mld, 948 struct ieee80211_vif *vif, 949 struct iwl_mld_wowlan_status *wowlan_status) 950 { 951 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 952 struct ieee80211_sta *ap_sta = mld_vif->ap_sta; 953 struct iwl_mld_txq *mld_txq; 954 955 iwl_mld_report_wowlan_wakeup(mld, vif, wowlan_status); 956 957 if (WARN_ON(!ap_sta)) 958 return false; 959 960 mld_txq = 961 iwl_mld_txq_from_mac80211(ap_sta->txq[wowlan_status->tid_offloaded_tx]); 962 963 /* Update the pointers of the Tx queue that may have moved during 964 * suspend if the firmware sent frames. 965 * The firmware stores last-used value, we store next value. 966 */ 967 WARN_ON(!mld_txq->status.allocated); 968 iwl_trans_set_q_ptrs(mld->trans, mld_txq->fw_id, 969 (wowlan_status->last_qos_seq + 970 0x10) >> 4); 971 972 if (!iwl_mld_update_sec_keys(mld, vif, wowlan_status)) 973 return false; 974 975 if (wowlan_status->wakeup_reasons & 976 (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 977 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH | 978 IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)) 979 return false; 980 981 return true; 982 } 983 984 static bool 985 iwl_mld_netdetect_match_info_handler(struct iwl_mld *mld, 986 struct iwl_mld_resume_data *resume_data, 987 struct iwl_rx_packet *pkt) 988 { 989 struct iwl_mld_netdetect_res *results = resume_data->netdetect_res; 990 const struct iwl_scan_offload_match_info *notif = (void *)pkt->data; 991 u32 len = iwl_rx_packet_payload_len(pkt); 992 993 if (IWL_FW_CHECK(mld, !mld->netdetect, 994 "Got scan match info notif when mld->netdetect==%d\n", 995 mld->netdetect)) 996 return true; 997 998 if (IWL_FW_CHECK(mld, len < sizeof(*notif), 999 "Invalid scan offload match notif of length: %d\n", 1000 len)) 1001 return true; 1002 1003 if (IWL_FW_CHECK(mld, resume_data->wowlan_status->wakeup_reasons != 1004 IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS, 1005 "Ignore scan match info: unexpected wakeup reason (expected=0x%x got=0x%x)\n", 1006 IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS, 1007 resume_data->wowlan_status->wakeup_reasons)) 1008 return true; 1009 1010 results->matched_profiles = le32_to_cpu(notif->matched_profiles); 1011 IWL_DEBUG_WOWLAN(mld, "number of matched profiles=%u\n", 1012 results->matched_profiles); 1013 1014 if (results->matched_profiles) 1015 memcpy(results->matches, notif->matches, 1016 NETDETECT_QUERY_BUF_LEN); 1017 1018 /* No scan should be active at this point */ 1019 mld->scan.status = 0; 1020 memset(mld->scan.uid_status, 0, sizeof(mld->scan.uid_status)); 1021 return false; 1022 } 1023 1024 static void 1025 iwl_mld_set_netdetect_info(struct iwl_mld *mld, 1026 const struct cfg80211_sched_scan_request *netdetect_cfg, 1027 struct cfg80211_wowlan_nd_info *netdetect_info, 1028 struct iwl_mld_netdetect_res *netdetect_res, 1029 unsigned long matched_profiles) 1030 { 1031 int i; 1032 1033 for_each_set_bit(i, &matched_profiles, netdetect_cfg->n_match_sets) { 1034 struct cfg80211_wowlan_nd_match *match; 1035 int idx, j, n_channels = 0; 1036 struct iwl_scan_offload_profile_match *matches = 1037 (void *)netdetect_res->matches; 1038 1039 for (int k = 0; k < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; k++) 1040 n_channels += 1041 hweight8(matches[i].matching_channels[k]); 1042 match = kzalloc(struct_size(match, channels, n_channels), 1043 GFP_KERNEL); 1044 if (!match) 1045 return; 1046 1047 netdetect_info->matches[netdetect_info->n_matches] = match; 1048 netdetect_info->n_matches++; 1049 1050 /* We inverted the order of the SSIDs in the scan 1051 * request, so invert the index here. 1052 */ 1053 idx = netdetect_cfg->n_match_sets - i - 1; 1054 match->ssid.ssid_len = 1055 netdetect_cfg->match_sets[idx].ssid.ssid_len; 1056 memcpy(match->ssid.ssid, 1057 netdetect_cfg->match_sets[idx].ssid.ssid, 1058 match->ssid.ssid_len); 1059 1060 if (netdetect_cfg->n_channels < n_channels) 1061 continue; 1062 1063 for_each_set_bit(j, 1064 (unsigned long *)&matches[i].matching_channels[0], 1065 sizeof(matches[i].matching_channels)) { 1066 match->channels[match->n_channels] = 1067 netdetect_cfg->channels[j]->center_freq; 1068 match->n_channels++; 1069 } 1070 } 1071 } 1072 1073 static void 1074 iwl_mld_process_netdetect_res(struct iwl_mld *mld, 1075 struct ieee80211_vif *vif, 1076 struct iwl_mld_resume_data *resume_data) 1077 { 1078 struct cfg80211_wowlan_nd_info *netdetect_info = NULL; 1079 const struct cfg80211_sched_scan_request *netdetect_cfg; 1080 struct cfg80211_wowlan_wakeup wakeup = { 1081 .pattern_idx = -1, 1082 }; 1083 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; 1084 unsigned long matched_profiles; 1085 u32 wakeup_reasons; 1086 int n_matches; 1087 1088 lockdep_assert_wiphy(mld->wiphy); 1089 1090 if (WARN_ON(!mld->wiphy->wowlan_config || 1091 !mld->wiphy->wowlan_config->nd_config)) { 1092 IWL_DEBUG_WOWLAN(mld, 1093 "Netdetect isn't configured on resume flow\n"); 1094 goto out; 1095 } 1096 1097 netdetect_cfg = mld->wiphy->wowlan_config->nd_config; 1098 wakeup_reasons = resume_data->wowlan_status->wakeup_reasons; 1099 1100 if (wakeup_reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 1101 wakeup.rfkill_release = true; 1102 1103 if (wakeup_reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) 1104 goto out; 1105 1106 if (!resume_data->netdetect_res->matched_profiles) { 1107 IWL_DEBUG_WOWLAN(mld, 1108 "Netdetect results aren't valid\n"); 1109 wakeup_report = NULL; 1110 goto out; 1111 } 1112 1113 matched_profiles = resume_data->netdetect_res->matched_profiles; 1114 if (!netdetect_cfg->n_match_sets) { 1115 IWL_DEBUG_WOWLAN(mld, 1116 "No netdetect match sets are configured\n"); 1117 goto out; 1118 } 1119 n_matches = hweight_long(matched_profiles); 1120 netdetect_info = kzalloc(struct_size(netdetect_info, matches, 1121 n_matches), GFP_KERNEL); 1122 if (netdetect_info) 1123 iwl_mld_set_netdetect_info(mld, netdetect_cfg, netdetect_info, 1124 resume_data->netdetect_res, 1125 matched_profiles); 1126 1127 wakeup.net_detect = netdetect_info; 1128 out: 1129 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); 1130 if (netdetect_info) { 1131 for (int i = 0; i < netdetect_info->n_matches; i++) 1132 kfree(netdetect_info->matches[i]); 1133 kfree(netdetect_info); 1134 } 1135 } 1136 1137 static bool iwl_mld_handle_d3_notif(struct iwl_notif_wait_data *notif_wait, 1138 struct iwl_rx_packet *pkt, void *data) 1139 { 1140 struct iwl_mld_resume_data *resume_data = data; 1141 struct iwl_mld *mld = 1142 container_of(notif_wait, struct iwl_mld, notif_wait); 1143 1144 switch (WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) { 1145 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION): { 1146 if (resume_data->notifs_received & IWL_D3_NOTIF_WOWLAN_INFO) { 1147 IWL_DEBUG_WOWLAN(mld, 1148 "got additional wowlan_info notif\n"); 1149 break; 1150 } 1151 resume_data->notif_handling_err = 1152 iwl_mld_handle_wowlan_info_notif(mld, 1153 resume_data->wowlan_status, 1154 pkt); 1155 resume_data->notifs_received |= IWL_D3_NOTIF_WOWLAN_INFO; 1156 1157 if (resume_data->wowlan_status->wakeup_reasons & 1158 IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT) 1159 resume_data->notifs_expected |= 1160 IWL_D3_NOTIF_WOWLAN_WAKE_PKT; 1161 break; 1162 } 1163 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION): { 1164 if (resume_data->notifs_received & 1165 IWL_D3_NOTIF_WOWLAN_WAKE_PKT) { 1166 /* We shouldn't get two wake packet notifications */ 1167 IWL_DEBUG_WOWLAN(mld, 1168 "Got additional wowlan wake packet notification\n"); 1169 break; 1170 } 1171 resume_data->notif_handling_err = 1172 iwl_mld_handle_wake_pkt_notif(mld, 1173 resume_data->wowlan_status, 1174 pkt); 1175 resume_data->notifs_received |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT; 1176 break; 1177 } 1178 case WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF): { 1179 if (resume_data->notifs_received & IWL_D3_ND_MATCH_INFO) { 1180 IWL_ERR(mld, 1181 "Got additional netdetect match info\n"); 1182 break; 1183 } 1184 1185 resume_data->notif_handling_err = 1186 iwl_mld_netdetect_match_info_handler(mld, resume_data, 1187 pkt); 1188 resume_data->notifs_received |= IWL_D3_ND_MATCH_INFO; 1189 break; 1190 } 1191 case WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION): { 1192 struct iwl_d3_end_notif *notif = (void *)pkt->data; 1193 1194 resume_data->d3_end_flags = le32_to_cpu(notif->flags); 1195 resume_data->notifs_received |= IWL_D3_NOTIF_D3_END_NOTIF; 1196 break; 1197 } 1198 default: 1199 WARN_ON(1); 1200 } 1201 1202 return resume_data->notifs_received == resume_data->notifs_expected; 1203 } 1204 1205 #define IWL_MLD_D3_NOTIF_TIMEOUT (HZ / 3) 1206 1207 static int iwl_mld_wait_d3_notif(struct iwl_mld *mld, 1208 struct iwl_mld_resume_data *resume_data, 1209 bool with_wowlan) 1210 { 1211 static const u16 wowlan_resume_notif[] = { 1212 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION), 1213 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION), 1214 WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF), 1215 WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION) 1216 }; 1217 static const u16 d3_resume_notif[] = { 1218 WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION) 1219 }; 1220 struct iwl_notification_wait wait_d3_notif; 1221 enum iwl_d3_status d3_status; 1222 int ret; 1223 1224 if (with_wowlan) 1225 iwl_init_notification_wait(&mld->notif_wait, &wait_d3_notif, 1226 wowlan_resume_notif, 1227 ARRAY_SIZE(wowlan_resume_notif), 1228 iwl_mld_handle_d3_notif, 1229 resume_data); 1230 else 1231 iwl_init_notification_wait(&mld->notif_wait, &wait_d3_notif, 1232 d3_resume_notif, 1233 ARRAY_SIZE(d3_resume_notif), 1234 iwl_mld_handle_d3_notif, 1235 resume_data); 1236 1237 ret = iwl_trans_d3_resume(mld->trans, &d3_status, false, false); 1238 if (ret || d3_status != IWL_D3_STATUS_ALIVE) { 1239 if (d3_status != IWL_D3_STATUS_ALIVE) { 1240 IWL_INFO(mld, "Device was reset during suspend\n"); 1241 ret = -ENOENT; 1242 } else { 1243 IWL_ERR(mld, "Transport resume failed\n"); 1244 } 1245 iwl_remove_notification(&mld->notif_wait, &wait_d3_notif); 1246 return ret; 1247 } 1248 1249 ret = iwl_wait_notification(&mld->notif_wait, &wait_d3_notif, 1250 IWL_MLD_D3_NOTIF_TIMEOUT); 1251 if (ret) 1252 IWL_ERR(mld, "Couldn't get the d3 notif %d\n", ret); 1253 1254 if (resume_data->notif_handling_err) 1255 ret = -EIO; 1256 1257 return ret; 1258 } 1259 1260 int iwl_mld_no_wowlan_suspend(struct iwl_mld *mld) 1261 { 1262 struct iwl_d3_manager_config d3_cfg_cmd_data = {}; 1263 int ret; 1264 1265 if (mld->debug_max_sleep) { 1266 d3_cfg_cmd_data.wakeup_host_timer = 1267 cpu_to_le32(mld->debug_max_sleep); 1268 d3_cfg_cmd_data.wakeup_flags = 1269 cpu_to_le32(IWL_WAKEUP_D3_HOST_TIMER); 1270 } 1271 1272 lockdep_assert_wiphy(mld->wiphy); 1273 1274 IWL_DEBUG_WOWLAN(mld, "Starting the no wowlan suspend flow\n"); 1275 1276 iwl_mld_low_latency_stop(mld); 1277 1278 /* This will happen if iwl_mld_supsend failed with FW error */ 1279 if (mld->trans->state == IWL_TRANS_NO_FW && 1280 test_bit(STATUS_FW_ERROR, &mld->trans->status)) 1281 return -ENODEV; 1282 1283 ret = iwl_mld_update_device_power(mld, true); 1284 if (ret) { 1285 IWL_ERR(mld, 1286 "d3 suspend: couldn't send power_device %d\n", ret); 1287 goto out; 1288 } 1289 1290 ret = iwl_mld_send_cmd_pdu(mld, D3_CONFIG_CMD, 1291 &d3_cfg_cmd_data); 1292 if (ret) { 1293 IWL_ERR(mld, 1294 "d3 suspend: couldn't send D3_CONFIG_CMD %d\n", ret); 1295 goto out; 1296 } 1297 1298 ret = iwl_trans_d3_suspend(mld->trans, false, false); 1299 if (ret) { 1300 IWL_ERR(mld, "d3 suspend: trans_d3_suspend failed %d\n", ret); 1301 } else { 1302 /* Async notification might send hcmds, which is not allowed in suspend */ 1303 iwl_mld_cancel_async_notifications(mld); 1304 mld->fw_status.in_d3 = true; 1305 } 1306 1307 out: 1308 if (ret) { 1309 mld->trans->state = IWL_TRANS_NO_FW; 1310 set_bit(STATUS_FW_ERROR, &mld->trans->status); 1311 } 1312 1313 return ret; 1314 } 1315 1316 int iwl_mld_no_wowlan_resume(struct iwl_mld *mld) 1317 { 1318 struct iwl_mld_resume_data resume_data = { 1319 .notifs_expected = 1320 IWL_D3_NOTIF_D3_END_NOTIF, 1321 }; 1322 int ret; 1323 1324 lockdep_assert_wiphy(mld->wiphy); 1325 1326 IWL_DEBUG_WOWLAN(mld, "Starting the no wowlan resume flow\n"); 1327 1328 mld->fw_status.in_d3 = false; 1329 iwl_fw_dbg_read_d3_debug_data(&mld->fwrt); 1330 1331 ret = iwl_mld_wait_d3_notif(mld, &resume_data, false); 1332 1333 if (!ret && (resume_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)) 1334 return -ENODEV; 1335 1336 if (ret) { 1337 mld->trans->state = IWL_TRANS_NO_FW; 1338 set_bit(STATUS_FW_ERROR, &mld->trans->status); 1339 return ret; 1340 } 1341 iwl_mld_low_latency_restart(mld); 1342 1343 return iwl_mld_update_device_power(mld, false); 1344 } 1345 1346 static void 1347 iwl_mld_aes_seq_to_le64_pn(struct ieee80211_key_conf *key, 1348 __le64 *key_rsc) 1349 { 1350 for (int i = 0; i < IWL_MAX_TID_COUNT; i++) { 1351 struct ieee80211_key_seq seq; 1352 u8 *pn = key->cipher == WLAN_CIPHER_SUITE_CCMP ? seq.ccmp.pn : 1353 seq.gcmp.pn; 1354 1355 ieee80211_get_key_rx_seq(key, i, &seq); 1356 key_rsc[i] = cpu_to_le64((u64)pn[5] | 1357 ((u64)pn[4] << 8) | 1358 ((u64)pn[3] << 16) | 1359 ((u64)pn[2] << 24) | 1360 ((u64)pn[1] << 32) | 1361 ((u64)pn[0] << 40)); 1362 } 1363 } 1364 1365 static void 1366 iwl_mld_suspend_set_ucast_pn(struct iwl_mld *mld, struct ieee80211_sta *sta, 1367 struct ieee80211_key_conf *key, __le64 *key_rsc) 1368 { 1369 struct iwl_mld_sta *mld_sta = 1370 iwl_mld_sta_from_mac80211(sta); 1371 struct iwl_mld_ptk_pn *mld_ptk_pn; 1372 1373 if (WARN_ON(key->keyidx >= ARRAY_SIZE(mld_sta->ptk_pn))) 1374 return; 1375 1376 mld_ptk_pn = wiphy_dereference(mld->wiphy, 1377 mld_sta->ptk_pn[key->keyidx]); 1378 if (WARN_ON(!mld_ptk_pn)) 1379 return; 1380 1381 for (int tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1382 struct ieee80211_key_seq seq; 1383 u8 *max_pn = seq.ccmp.pn; 1384 1385 /* get the PN from mac80211, used on the default queue */ 1386 ieee80211_get_key_rx_seq(key, tid, &seq); 1387 1388 /* and use the internal data for all queues */ 1389 for (int que = 1; que < mld->trans->info.num_rxqs; que++) { 1390 u8 *cur_pn = mld_ptk_pn->q[que].pn[tid]; 1391 1392 if (memcmp(max_pn, cur_pn, IEEE80211_CCMP_PN_LEN) < 0) 1393 max_pn = cur_pn; 1394 } 1395 key_rsc[tid] = cpu_to_le64((u64)max_pn[5] | 1396 ((u64)max_pn[4] << 8) | 1397 ((u64)max_pn[3] << 16) | 1398 ((u64)max_pn[2] << 24) | 1399 ((u64)max_pn[1] << 32) | 1400 ((u64)max_pn[0] << 40)); 1401 } 1402 } 1403 1404 static void 1405 iwl_mld_suspend_convert_tkip_ipn(struct ieee80211_key_conf *key, 1406 __le64 *rsc) 1407 { 1408 struct ieee80211_key_seq seq; 1409 1410 for (int i = 0; i < IWL_MAX_TID_COUNT; i++) { 1411 ieee80211_get_key_rx_seq(key, i, &seq); 1412 rsc[i] = 1413 cpu_to_le64(((u64)seq.tkip.iv32 << 16) | 1414 seq.tkip.iv16); 1415 } 1416 } 1417 1418 static void 1419 iwl_mld_suspend_key_data_iter(struct ieee80211_hw *hw, 1420 struct ieee80211_vif *vif, 1421 struct ieee80211_sta *sta, 1422 struct ieee80211_key_conf *key, 1423 void *_data) 1424 { 1425 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1426 struct iwl_mld_suspend_key_iter_data *data = _data; 1427 __le64 *key_rsc; 1428 __le32 cipher = 0; 1429 1430 switch (key->cipher) { 1431 case WLAN_CIPHER_SUITE_CCMP: 1432 cipher = cpu_to_le32(STA_KEY_FLG_CCM); 1433 fallthrough; 1434 case WLAN_CIPHER_SUITE_GCMP: 1435 case WLAN_CIPHER_SUITE_GCMP_256: 1436 if (!cipher) 1437 cipher = cpu_to_le32(STA_KEY_FLG_GCMP); 1438 fallthrough; 1439 case WLAN_CIPHER_SUITE_TKIP: 1440 if (!cipher) 1441 cipher = cpu_to_le32(STA_KEY_FLG_TKIP); 1442 if (sta) { 1443 key_rsc = data->rsc->ucast_rsc; 1444 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) 1445 iwl_mld_suspend_convert_tkip_ipn(key, key_rsc); 1446 else 1447 iwl_mld_suspend_set_ucast_pn(mld, sta, key, 1448 key_rsc); 1449 1450 data->have_rsc = true; 1451 return; 1452 } 1453 /* We're iterating from old to new, there're 4 possible 1454 * gtk ids, and only the last two keys matter 1455 */ 1456 if (WARN_ON(data->gtks >= 1457 ARRAY_SIZE(data->found_gtk_idx))) 1458 return; 1459 1460 if (WARN_ON(key->keyidx >= 1461 ARRAY_SIZE(data->rsc->mcast_key_id_map))) 1462 return; 1463 data->gtk_cipher = cipher; 1464 data->found_gtk_idx[data->gtks] = key->keyidx; 1465 key_rsc = data->rsc->mcast_rsc[data->gtks % 2]; 1466 data->rsc->mcast_key_id_map[key->keyidx] = 1467 data->gtks % 2; 1468 1469 if (data->gtks >= 2) { 1470 int prev = data->gtks % 2; 1471 int prev_idx = data->found_gtk_idx[prev]; 1472 1473 data->rsc->mcast_key_id_map[prev_idx] = 1474 IWL_MCAST_KEY_MAP_INVALID; 1475 } 1476 1477 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) 1478 iwl_mld_suspend_convert_tkip_ipn(key, key_rsc); 1479 else 1480 iwl_mld_aes_seq_to_le64_pn(key, key_rsc); 1481 1482 data->gtks++; 1483 data->have_rsc = true; 1484 break; 1485 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 1486 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 1487 cipher = cpu_to_le32(STA_KEY_FLG_GCMP); 1488 fallthrough; 1489 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 1490 case WLAN_CIPHER_SUITE_AES_CMAC: 1491 if (!cipher) 1492 cipher = cpu_to_le32(STA_KEY_FLG_CCM); 1493 if (key->keyidx == 4 || key->keyidx == 5) 1494 data->igtk_cipher = cipher; 1495 1496 if (key->keyidx == 6 || key->keyidx == 7) 1497 data->bigtk_cipher = cipher; 1498 1499 break; 1500 } 1501 } 1502 1503 static int 1504 iwl_mld_send_kek_kck_cmd(struct iwl_mld *mld, 1505 struct iwl_mld_vif *mld_vif, 1506 struct iwl_mld_suspend_key_iter_data data, 1507 int ap_sta_id) 1508 { 1509 struct iwl_wowlan_kek_kck_material_cmd_v4 kek_kck_cmd = {}; 1510 struct iwl_mld_rekey_data *rekey_data = 1511 &mld_vif->wowlan_data.rekey_data; 1512 1513 memcpy(kek_kck_cmd.kck, rekey_data->kck, 1514 rekey_data->kck_len); 1515 kek_kck_cmd.kck_len = cpu_to_le16(rekey_data->kck_len); 1516 memcpy(kek_kck_cmd.kek, rekey_data->kek, 1517 rekey_data->kek_len); 1518 kek_kck_cmd.kek_len = cpu_to_le16(rekey_data->kek_len); 1519 kek_kck_cmd.replay_ctr = rekey_data->replay_ctr; 1520 kek_kck_cmd.akm = cpu_to_le32(rekey_data->akm); 1521 kek_kck_cmd.sta_id = cpu_to_le32(ap_sta_id); 1522 kek_kck_cmd.gtk_cipher = data.gtk_cipher; 1523 kek_kck_cmd.igtk_cipher = data.igtk_cipher; 1524 kek_kck_cmd.bigtk_cipher = data.bigtk_cipher; 1525 1526 IWL_DEBUG_WOWLAN(mld, "setting akm %d\n", 1527 rekey_data->akm); 1528 1529 return iwl_mld_send_cmd_pdu(mld, WOWLAN_KEK_KCK_MATERIAL, 1530 &kek_kck_cmd); 1531 } 1532 1533 static int 1534 iwl_mld_suspend_send_security_cmds(struct iwl_mld *mld, 1535 struct ieee80211_vif *vif, 1536 struct iwl_mld_vif *mld_vif, 1537 int ap_sta_id) 1538 { 1539 struct iwl_mld_suspend_key_iter_data data = {}; 1540 int ret; 1541 1542 data.rsc = kzalloc(sizeof(*data.rsc), GFP_KERNEL); 1543 if (!data.rsc) 1544 return -ENOMEM; 1545 1546 memset(data.rsc->mcast_key_id_map, IWL_MCAST_KEY_MAP_INVALID, 1547 ARRAY_SIZE(data.rsc->mcast_key_id_map)); 1548 1549 data.rsc->sta_id = cpu_to_le32(ap_sta_id); 1550 ieee80211_iter_keys(mld->hw, vif, 1551 iwl_mld_suspend_key_data_iter, 1552 &data); 1553 1554 if (data.have_rsc) 1555 ret = iwl_mld_send_cmd_pdu(mld, WOWLAN_TSC_RSC_PARAM, 1556 data.rsc); 1557 else 1558 ret = 0; 1559 1560 if (!ret && mld_vif->wowlan_data.rekey_data.valid) 1561 ret = iwl_mld_send_kek_kck_cmd(mld, mld_vif, data, ap_sta_id); 1562 1563 kfree(data.rsc); 1564 1565 return ret; 1566 } 1567 1568 static void 1569 iwl_mld_set_wowlan_config_cmd(struct iwl_mld *mld, 1570 struct cfg80211_wowlan *wowlan, 1571 struct iwl_wowlan_config_cmd *wowlan_config_cmd, 1572 struct ieee80211_sta *ap_sta, 1573 struct ieee80211_bss_conf *link) 1574 { 1575 wowlan_config_cmd->is_11n_connection = 1576 ap_sta->deflink.ht_cap.ht_supported; 1577 wowlan_config_cmd->flags = ENABLE_L3_FILTERING | 1578 ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING; 1579 1580 if (ap_sta->mfp) 1581 wowlan_config_cmd->flags |= IS_11W_ASSOC; 1582 1583 if (iwl_mld_beacon_protection_enabled(mld, link)) 1584 wowlan_config_cmd->flags |= HAS_BEACON_PROTECTION; 1585 1586 if (wowlan->disconnect) 1587 wowlan_config_cmd->wakeup_filter |= 1588 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS | 1589 IWL_WOWLAN_WAKEUP_LINK_CHANGE); 1590 if (wowlan->magic_pkt) 1591 wowlan_config_cmd->wakeup_filter |= 1592 cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET); 1593 if (wowlan->gtk_rekey_failure) 1594 wowlan_config_cmd->wakeup_filter |= 1595 cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL); 1596 if (wowlan->eap_identity_req) 1597 wowlan_config_cmd->wakeup_filter |= 1598 cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ); 1599 if (wowlan->four_way_handshake) 1600 wowlan_config_cmd->wakeup_filter |= 1601 cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE); 1602 if (wowlan->n_patterns) 1603 wowlan_config_cmd->wakeup_filter |= 1604 cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH); 1605 1606 if (wowlan->rfkill_release) 1607 wowlan_config_cmd->wakeup_filter |= 1608 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT); 1609 1610 if (wowlan->any) { 1611 wowlan_config_cmd->wakeup_filter |= 1612 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS | 1613 IWL_WOWLAN_WAKEUP_LINK_CHANGE | 1614 IWL_WOWLAN_WAKEUP_RX_FRAME | 1615 IWL_WOWLAN_WAKEUP_BCN_FILTERING); 1616 } 1617 } 1618 1619 static int iwl_mld_send_patterns(struct iwl_mld *mld, 1620 struct cfg80211_wowlan *wowlan, 1621 int ap_sta_id) 1622 { 1623 struct iwl_wowlan_patterns_cmd *pattern_cmd; 1624 struct iwl_host_cmd cmd = { 1625 .id = WOWLAN_PATTERNS, 1626 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 1627 }; 1628 int ret; 1629 1630 if (!wowlan->n_patterns) 1631 return 0; 1632 1633 cmd.len[0] = struct_size(pattern_cmd, patterns, wowlan->n_patterns); 1634 1635 pattern_cmd = kzalloc(cmd.len[0], GFP_KERNEL); 1636 if (!pattern_cmd) 1637 return -ENOMEM; 1638 1639 pattern_cmd->n_patterns = wowlan->n_patterns; 1640 pattern_cmd->sta_id = ap_sta_id; 1641 1642 for (int i = 0; i < wowlan->n_patterns; i++) { 1643 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8); 1644 1645 pattern_cmd->patterns[i].pattern_type = 1646 WOWLAN_PATTERN_TYPE_BITMASK; 1647 1648 memcpy(&pattern_cmd->patterns[i].u.bitmask.mask, 1649 wowlan->patterns[i].mask, mask_len); 1650 memcpy(&pattern_cmd->patterns[i].u.bitmask.pattern, 1651 wowlan->patterns[i].pattern, 1652 wowlan->patterns[i].pattern_len); 1653 pattern_cmd->patterns[i].u.bitmask.mask_size = mask_len; 1654 pattern_cmd->patterns[i].u.bitmask.pattern_size = 1655 wowlan->patterns[i].pattern_len; 1656 } 1657 1658 cmd.data[0] = pattern_cmd; 1659 ret = iwl_mld_send_cmd(mld, &cmd); 1660 kfree(pattern_cmd); 1661 return ret; 1662 } 1663 1664 static int 1665 iwl_mld_send_proto_offload(struct iwl_mld *mld, 1666 struct ieee80211_vif *vif, 1667 u8 ap_sta_id) 1668 { 1669 struct iwl_proto_offload_cmd_v4 *cmd __free(kfree); 1670 struct iwl_host_cmd hcmd = { 1671 .id = PROT_OFFLOAD_CONFIG_CMD, 1672 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 1673 .len[0] = sizeof(*cmd), 1674 }; 1675 u32 enabled = 0; 1676 1677 cmd = kzalloc(hcmd.len[0], GFP_KERNEL); 1678 1679 #if IS_ENABLED(CONFIG_IPV6) 1680 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 1681 struct iwl_mld_wowlan_data *wowlan_data = &mld_vif->wowlan_data; 1682 struct iwl_ns_config *nsc; 1683 struct iwl_targ_addr *addrs; 1684 int n_nsc, n_addrs; 1685 int i, c; 1686 int num_skipped = 0; 1687 1688 nsc = cmd->ns_config; 1689 n_nsc = IWL_PROTO_OFFLOAD_NUM_NS_CONFIG_V3L; 1690 addrs = cmd->targ_addrs; 1691 n_addrs = IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V3L; 1692 1693 /* For each address we have (and that will fit) fill a target 1694 * address struct and combine for NS offload structs with the 1695 * solicited node addresses. 1696 */ 1697 for (i = 0, c = 0; 1698 i < wowlan_data->num_target_ipv6_addrs && 1699 i < n_addrs && c < n_nsc; i++) { 1700 int j; 1701 struct in6_addr solicited_addr; 1702 1703 /* Because ns is offloaded skip tentative address to avoid 1704 * violating RFC4862. 1705 */ 1706 if (test_bit(i, wowlan_data->tentative_addrs)) { 1707 num_skipped++; 1708 continue; 1709 } 1710 1711 addrconf_addr_solict_mult(&wowlan_data->target_ipv6_addrs[i], 1712 &solicited_addr); 1713 for (j = 0; j < n_nsc && j < c; j++) 1714 if (ipv6_addr_cmp(&nsc[j].dest_ipv6_addr, 1715 &solicited_addr) == 0) 1716 break; 1717 if (j == c) 1718 c++; 1719 addrs[i].addr = wowlan_data->target_ipv6_addrs[i]; 1720 addrs[i].config_num = cpu_to_le32(j); 1721 nsc[j].dest_ipv6_addr = solicited_addr; 1722 memcpy(nsc[j].target_mac_addr, vif->addr, ETH_ALEN); 1723 } 1724 1725 if (wowlan_data->num_target_ipv6_addrs - num_skipped) 1726 enabled |= IWL_D3_PROTO_IPV6_VALID; 1727 1728 cmd->num_valid_ipv6_addrs = cpu_to_le32(i - num_skipped); 1729 if (enabled & IWL_D3_PROTO_IPV6_VALID) 1730 enabled |= IWL_D3_PROTO_OFFLOAD_NS; 1731 #endif 1732 1733 if (vif->cfg.arp_addr_cnt) { 1734 enabled |= IWL_D3_PROTO_OFFLOAD_ARP | IWL_D3_PROTO_IPV4_VALID; 1735 cmd->common.host_ipv4_addr = vif->cfg.arp_addr_list[0]; 1736 ether_addr_copy(cmd->common.arp_mac_addr, vif->addr); 1737 } 1738 1739 enabled |= IWL_D3_PROTO_OFFLOAD_BTM; 1740 cmd->common.enabled = cpu_to_le32(enabled); 1741 cmd->sta_id = cpu_to_le32(ap_sta_id); 1742 hcmd.data[0] = cmd; 1743 return iwl_mld_send_cmd(mld, &hcmd); 1744 } 1745 1746 static int 1747 iwl_mld_wowlan_config(struct iwl_mld *mld, struct ieee80211_vif *bss_vif, 1748 struct cfg80211_wowlan *wowlan) 1749 { 1750 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(bss_vif); 1751 struct ieee80211_sta *ap_sta = mld_vif->ap_sta; 1752 struct iwl_wowlan_config_cmd wowlan_config_cmd = { 1753 .offloading_tid = IWL_WOWLAN_OFFLOAD_TID, 1754 }; 1755 u32 sta_id_mask; 1756 int ap_sta_id, ret; 1757 int link_id = iwl_mld_get_primary_link(bss_vif); 1758 struct ieee80211_bss_conf *link_conf; 1759 1760 ret = iwl_mld_block_emlsr_sync(mld, bss_vif, 1761 IWL_MLD_EMLSR_BLOCKED_WOWLAN, link_id); 1762 if (ret) 1763 return ret; 1764 1765 link_conf = link_conf_dereference_protected(bss_vif, link_id); 1766 1767 if (WARN_ON(!ap_sta || !link_conf)) 1768 return -EINVAL; 1769 1770 sta_id_mask = iwl_mld_fw_sta_id_mask(mld, ap_sta); 1771 if (WARN_ON(hweight32(sta_id_mask) != 1)) 1772 return -EINVAL; 1773 1774 ap_sta_id = __ffs(sta_id_mask); 1775 wowlan_config_cmd.sta_id = ap_sta_id; 1776 1777 ret = iwl_mld_ensure_queue(mld, 1778 ap_sta->txq[wowlan_config_cmd.offloading_tid]); 1779 if (ret) 1780 return ret; 1781 1782 iwl_mld_set_wowlan_config_cmd(mld, wowlan, 1783 &wowlan_config_cmd, ap_sta, link_conf); 1784 ret = iwl_mld_send_cmd_pdu(mld, WOWLAN_CONFIGURATION, 1785 &wowlan_config_cmd); 1786 if (ret) 1787 return ret; 1788 1789 ret = iwl_mld_suspend_send_security_cmds(mld, bss_vif, mld_vif, 1790 ap_sta_id); 1791 if (ret) 1792 return ret; 1793 1794 ret = iwl_mld_send_patterns(mld, wowlan, ap_sta_id); 1795 if (ret) 1796 return ret; 1797 1798 ret = iwl_mld_send_proto_offload(mld, bss_vif, ap_sta_id); 1799 if (ret) 1800 return ret; 1801 1802 iwl_mld_enable_beacon_filter(mld, link_conf, true); 1803 return iwl_mld_update_mac_power(mld, bss_vif, true); 1804 } 1805 1806 int iwl_mld_wowlan_suspend(struct iwl_mld *mld, struct cfg80211_wowlan *wowlan) 1807 { 1808 struct ieee80211_vif *bss_vif; 1809 1810 lockdep_assert_wiphy(mld->wiphy); 1811 1812 if (WARN_ON(!wowlan)) 1813 return 1; 1814 1815 IWL_DEBUG_WOWLAN(mld, "Starting the wowlan suspend flow\n"); 1816 1817 bss_vif = iwl_mld_get_bss_vif(mld); 1818 if (WARN_ON(!bss_vif)) 1819 return 1; 1820 1821 if (!bss_vif->cfg.assoc) { 1822 int ret; 1823 /* If we're not associated, this must be netdetect */ 1824 if (WARN_ON(!wowlan->nd_config)) 1825 return 1; 1826 1827 ret = iwl_mld_netdetect_config(mld, bss_vif, wowlan); 1828 if (!ret) 1829 mld->netdetect = true; 1830 1831 return ret; 1832 } 1833 1834 return iwl_mld_wowlan_config(mld, bss_vif, wowlan); 1835 } 1836 1837 /* Returns 0 on success, 1 if an error occurred in firmware during d3, 1838 * A negative value is expected only in unrecovreable cases. 1839 */ 1840 int iwl_mld_wowlan_resume(struct iwl_mld *mld) 1841 { 1842 struct ieee80211_vif *bss_vif; 1843 struct ieee80211_bss_conf *link_conf; 1844 struct iwl_mld_netdetect_res netdetect_res; 1845 struct iwl_mld_resume_data resume_data = { 1846 .notifs_expected = 1847 IWL_D3_NOTIF_WOWLAN_INFO | 1848 IWL_D3_NOTIF_D3_END_NOTIF, 1849 .netdetect_res = &netdetect_res, 1850 }; 1851 int link_id; 1852 int ret; 1853 bool fw_err = false; 1854 1855 lockdep_assert_wiphy(mld->wiphy); 1856 1857 IWL_DEBUG_WOWLAN(mld, "Starting the wowlan resume flow\n"); 1858 1859 if (!mld->fw_status.in_d3) { 1860 IWL_DEBUG_WOWLAN(mld, 1861 "Device_powered_off() was called during wowlan\n"); 1862 goto err; 1863 } 1864 1865 mld->fw_status.resuming = true; 1866 mld->fw_status.in_d3 = false; 1867 mld->scan.last_start_time_jiffies = jiffies; 1868 1869 bss_vif = iwl_mld_get_bss_vif(mld); 1870 if (WARN_ON(!bss_vif)) 1871 goto err; 1872 1873 /* We can't have several links upon wowlan entry, 1874 * this is enforced in the suspend flow. 1875 */ 1876 WARN_ON(hweight16(bss_vif->active_links) > 1); 1877 link_id = bss_vif->active_links ? __ffs(bss_vif->active_links) : 0; 1878 link_conf = link_conf_dereference_protected(bss_vif, link_id); 1879 1880 if (WARN_ON(!link_conf)) 1881 goto err; 1882 1883 iwl_fw_dbg_read_d3_debug_data(&mld->fwrt); 1884 1885 resume_data.wowlan_status = kzalloc(sizeof(*resume_data.wowlan_status), 1886 GFP_KERNEL); 1887 if (!resume_data.wowlan_status) 1888 return -ENOMEM; 1889 1890 if (mld->netdetect) 1891 resume_data.notifs_expected |= IWL_D3_ND_MATCH_INFO; 1892 1893 ret = iwl_mld_wait_d3_notif(mld, &resume_data, true); 1894 if (ret) { 1895 IWL_ERR(mld, "Couldn't get the d3 notifs %d\n", ret); 1896 fw_err = true; 1897 goto err; 1898 } 1899 1900 if (resume_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE) { 1901 mld->fw_status.in_hw_restart = true; 1902 goto process_wakeup_results; 1903 } 1904 1905 iwl_mld_update_changed_regdomain(mld); 1906 iwl_mld_update_mac_power(mld, bss_vif, false); 1907 iwl_mld_enable_beacon_filter(mld, link_conf, false); 1908 iwl_mld_update_device_power(mld, false); 1909 1910 if (mld->netdetect) 1911 ret = iwl_mld_scan_stop(mld, IWL_MLD_SCAN_NETDETECT, false); 1912 1913 process_wakeup_results: 1914 if (mld->netdetect) { 1915 iwl_mld_process_netdetect_res(mld, bss_vif, &resume_data); 1916 mld->netdetect = false; 1917 } else { 1918 bool keep_connection = 1919 iwl_mld_process_wowlan_status(mld, bss_vif, 1920 resume_data.wowlan_status); 1921 1922 /* EMLSR state will be cleared if the connection is not kept */ 1923 if (keep_connection) 1924 iwl_mld_unblock_emlsr(mld, bss_vif, 1925 IWL_MLD_EMLSR_BLOCKED_WOWLAN); 1926 else 1927 ieee80211_resume_disconnect(bss_vif); 1928 } 1929 1930 goto out; 1931 1932 err: 1933 if (fw_err) { 1934 mld->trans->state = IWL_TRANS_NO_FW; 1935 set_bit(STATUS_FW_ERROR, &mld->trans->status); 1936 } 1937 1938 mld->fw_status.in_hw_restart = true; 1939 ret = 1; 1940 out: 1941 mld->fw_status.resuming = false; 1942 1943 if (resume_data.wowlan_status) { 1944 kfree(resume_data.wowlan_status->wake_packet); 1945 kfree(resume_data.wowlan_status); 1946 } 1947 1948 return ret; 1949 } 1950