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 15 #include "fw/api/d3.h" 16 #include "fw/api/offload.h" 17 #include "fw/api/sta.h" 18 #include "fw/dbg.h" 19 20 #include <net/ipv6.h> 21 #include <net/addrconf.h> 22 #include <linux/bitops.h> 23 24 /** 25 * enum iwl_mld_d3_notif - d3 notifications 26 * @IWL_D3_NOTIF_WOWLAN_INFO: WOWLAN_INFO_NOTIF is expected/was received 27 * @IWL_D3_NOTIF_WOWLAN_WAKE_PKT: WOWLAN_WAKE_PKT_NOTIF is expected/was received 28 * @IWL_D3_NOTIF_PROT_OFFLOAD: PROT_OFFLOAD_NOTIF is expected/was received 29 * @IWL_D3_ND_MATCH_INFO: OFFLOAD_MATCH_INFO_NOTIF is expected/was received 30 * @IWL_D3_NOTIF_D3_END_NOTIF: D3_END_NOTIF is expected/was received 31 */ 32 enum iwl_mld_d3_notif { 33 IWL_D3_NOTIF_WOWLAN_INFO = BIT(0), 34 IWL_D3_NOTIF_WOWLAN_WAKE_PKT = BIT(1), 35 IWL_D3_NOTIF_PROT_OFFLOAD = BIT(2), 36 IWL_D3_ND_MATCH_INFO = BIT(3), 37 IWL_D3_NOTIF_D3_END_NOTIF = BIT(4) 38 }; 39 40 struct iwl_mld_resume_key_iter_data { 41 struct iwl_mld *mld; 42 struct iwl_mld_wowlan_status *wowlan_status; 43 u32 num_keys, gtk_cipher, igtk_cipher, bigtk_cipher; 44 bool unhandled_cipher; 45 }; 46 47 struct iwl_mld_suspend_key_iter_data { 48 struct iwl_wowlan_rsc_tsc_params_cmd *rsc; 49 bool have_rsc; 50 int gtks; 51 int found_gtk_idx[4]; 52 __le32 gtk_cipher; 53 __le32 igtk_cipher; 54 __le32 bigtk_cipher; 55 }; 56 57 struct iwl_mld_mcast_key_data { 58 u8 key[WOWLAN_KEY_MAX_SIZE]; 59 u8 len; 60 u8 flags; 61 u8 id; 62 union { 63 struct { 64 struct ieee80211_key_seq aes_seq[IWL_MAX_TID_COUNT]; 65 struct ieee80211_key_seq tkip_seq[IWL_MAX_TID_COUNT]; 66 } gtk; 67 struct { 68 struct ieee80211_key_seq cmac_gmac_seq; 69 } igtk_bigtk; 70 }; 71 72 }; 73 74 /** 75 * struct iwl_mld_wowlan_status - contains wowlan status data from 76 * all wowlan notifications 77 * @wakeup_reasons: wakeup reasons, see &enum iwl_wowlan_wakeup_reason 78 * @replay_ctr: GTK rekey replay counter 79 * @pattern_number: number of the matched patterns on packets 80 * @last_qos_seq: QoS sequence counter of offloaded tid 81 * @num_of_gtk_rekeys: number of GTK rekeys during D3 82 * @tid_offloaded_tx: tid used by the firmware to transmit data packets 83 * while in wowlan 84 * @wake_packet: wakeup packet received 85 * @wake_packet_length: wake packet length 86 * @wake_packet_bufsize: wake packet bufsize 87 * @gtk: data of the last two used gtk's by the FW upon resume 88 * @igtk: data of the last used igtk by the FW upon resume 89 * @bigtk: data of the last two used gtk's by the FW upon resume 90 * @ptk: last seq numbers per tid passed by the FW, 91 * holds both in tkip and aes formats 92 */ 93 struct iwl_mld_wowlan_status { 94 u32 wakeup_reasons; 95 u64 replay_ctr; 96 u16 pattern_number; 97 u16 last_qos_seq; 98 u32 num_of_gtk_rekeys; 99 u8 tid_offloaded_tx; 100 u8 *wake_packet; 101 u32 wake_packet_length; 102 u32 wake_packet_bufsize; 103 struct iwl_mld_mcast_key_data gtk[WOWLAN_GTK_KEYS_NUM]; 104 struct iwl_mld_mcast_key_data igtk; 105 struct iwl_mld_mcast_key_data bigtk[WOWLAN_BIGTK_KEYS_NUM]; 106 struct { 107 struct ieee80211_key_seq aes_seq[IWL_MAX_TID_COUNT]; 108 struct ieee80211_key_seq tkip_seq[IWL_MAX_TID_COUNT]; 109 110 } ptk; 111 }; 112 113 #define NETDETECT_QUERY_BUF_LEN \ 114 (sizeof(struct iwl_scan_offload_profile_match) * \ 115 IWL_SCAN_MAX_PROFILES_V2) 116 117 /** 118 * struct iwl_mld_netdetect_res - contains netdetect results from 119 * match_info_notif 120 * @matched_profiles: bitmap of matched profiles, referencing the 121 * matches passed in the scan offload request 122 * @matches: array of match information, one for each match 123 */ 124 struct iwl_mld_netdetect_res { 125 u32 matched_profiles; 126 u8 matches[NETDETECT_QUERY_BUF_LEN]; 127 }; 128 129 /** 130 * struct iwl_mld_resume_data - d3 resume flow data 131 * @notifs_expected: bitmap of expected notifications from fw, 132 * see &enum iwl_mld_d3_notif 133 * @notifs_received: bitmap of received notifications from fw, 134 * see &enum iwl_mld_d3_notif 135 * @d3_end_flags: bitmap of flags from d3_end_notif 136 * @notif_handling_err: error handling one of the resume notifications 137 * @wowlan_status: wowlan status data from all wowlan notifications 138 * @netdetect_res: contains netdetect results from match_info_notif 139 */ 140 struct iwl_mld_resume_data { 141 u32 notifs_expected; 142 u32 notifs_received; 143 u32 d3_end_flags; 144 bool notif_handling_err; 145 struct iwl_mld_wowlan_status *wowlan_status; 146 struct iwl_mld_netdetect_res *netdetect_res; 147 }; 148 149 #define IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT \ 150 (IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET | \ 151 IWL_WOWLAN_WAKEUP_BY_PATTERN | \ 152 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN |\ 153 IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN_WILDCARD |\ 154 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN |\ 155 IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN_WILDCARD) 156 157 #define IWL_WOWLAN_OFFLOAD_TID 0 158 159 void iwl_mld_set_rekey_data(struct ieee80211_hw *hw, 160 struct ieee80211_vif *vif, 161 struct cfg80211_gtk_rekey_data *data) 162 { 163 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 164 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 165 struct iwl_mld_wowlan_data *wowlan_data = &mld_vif->wowlan_data; 166 167 lockdep_assert_wiphy(mld->wiphy); 168 169 wowlan_data->rekey_data.kek_len = data->kek_len; 170 wowlan_data->rekey_data.kck_len = data->kck_len; 171 memcpy(wowlan_data->rekey_data.kek, data->kek, data->kek_len); 172 memcpy(wowlan_data->rekey_data.kck, data->kck, data->kck_len); 173 wowlan_data->rekey_data.akm = data->akm & 0xFF; 174 wowlan_data->rekey_data.replay_ctr = 175 cpu_to_le64(be64_to_cpup((const __be64 *)data->replay_ctr)); 176 wowlan_data->rekey_data.valid = true; 177 } 178 179 #if IS_ENABLED(CONFIG_IPV6) 180 void iwl_mld_ipv6_addr_change(struct ieee80211_hw *hw, 181 struct ieee80211_vif *vif, 182 struct inet6_dev *idev) 183 { 184 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 185 struct iwl_mld_wowlan_data *wowlan_data = &mld_vif->wowlan_data; 186 struct inet6_ifaddr *ifa; 187 int idx = 0; 188 189 memset(wowlan_data->tentative_addrs, 0, 190 sizeof(wowlan_data->tentative_addrs)); 191 192 read_lock_bh(&idev->lock); 193 list_for_each_entry(ifa, &idev->addr_list, if_list) { 194 wowlan_data->target_ipv6_addrs[idx] = ifa->addr; 195 if (ifa->flags & IFA_F_TENTATIVE) 196 __set_bit(idx, wowlan_data->tentative_addrs); 197 idx++; 198 if (idx >= IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_MAX) 199 break; 200 } 201 read_unlock_bh(&idev->lock); 202 203 wowlan_data->num_target_ipv6_addrs = idx; 204 } 205 #endif 206 207 static int 208 iwl_mld_netdetect_config(struct iwl_mld *mld, 209 struct ieee80211_vif *vif, 210 const struct cfg80211_wowlan *wowlan) 211 { 212 int ret; 213 struct cfg80211_sched_scan_request *netdetect_cfg = 214 wowlan->nd_config; 215 struct ieee80211_scan_ies ies = {}; 216 217 ret = iwl_mld_scan_stop(mld, IWL_MLD_SCAN_SCHED, true); 218 if (ret) 219 return ret; 220 221 ret = iwl_mld_sched_scan_start(mld, vif, netdetect_cfg, &ies, 222 IWL_MLD_SCAN_NETDETECT); 223 return ret; 224 } 225 226 static void 227 iwl_mld_le64_to_tkip_seq(__le64 le_pn, struct ieee80211_key_seq *seq) 228 { 229 u64 pn = le64_to_cpu(le_pn); 230 231 seq->tkip.iv16 = (u16)pn; 232 seq->tkip.iv32 = (u32)(pn >> 16); 233 } 234 235 static void 236 iwl_mld_le64_to_aes_seq(__le64 le_pn, struct ieee80211_key_seq *seq) 237 { 238 u64 pn = le64_to_cpu(le_pn); 239 240 seq->ccmp.pn[0] = pn >> 40; 241 seq->ccmp.pn[1] = pn >> 32; 242 seq->ccmp.pn[2] = pn >> 24; 243 seq->ccmp.pn[3] = pn >> 16; 244 seq->ccmp.pn[4] = pn >> 8; 245 seq->ccmp.pn[5] = pn; 246 } 247 248 static void 249 iwl_mld_convert_gtk_resume_seq(struct iwl_mld_mcast_key_data *gtk_data, 250 const struct iwl_wowlan_all_rsc_tsc_v5 *sc, 251 int rsc_idx) 252 { 253 struct ieee80211_key_seq *aes_seq = gtk_data->gtk.aes_seq; 254 struct ieee80211_key_seq *tkip_seq = gtk_data->gtk.tkip_seq; 255 256 if (rsc_idx >= ARRAY_SIZE(sc->mcast_rsc)) 257 return; 258 259 /* We store both the TKIP and AES representations coming from the 260 * FW because we decode the data from there before we iterate 261 * the keys and know which type is used. 262 */ 263 for (int tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 264 iwl_mld_le64_to_tkip_seq(sc->mcast_rsc[rsc_idx][tid], 265 &tkip_seq[tid]); 266 iwl_mld_le64_to_aes_seq(sc->mcast_rsc[rsc_idx][tid], 267 &aes_seq[tid]); 268 } 269 } 270 271 static void 272 iwl_mld_convert_gtk_resume_data(struct iwl_mld *mld, 273 struct iwl_mld_wowlan_status *wowlan_status, 274 const struct iwl_wowlan_gtk_status_v3 *gtk_data, 275 const struct iwl_wowlan_all_rsc_tsc_v5 *sc) 276 { 277 int status_idx = 0; 278 279 BUILD_BUG_ON(sizeof(wowlan_status->gtk[0].key) < 280 sizeof(gtk_data[0].key)); 281 BUILD_BUG_ON(ARRAY_SIZE(wowlan_status->gtk) < WOWLAN_GTK_KEYS_NUM); 282 283 for (int notif_idx = 0; notif_idx < ARRAY_SIZE(wowlan_status->gtk); 284 notif_idx++) { 285 int rsc_idx; 286 287 if (!(gtk_data[notif_idx].key_len)) 288 continue; 289 290 wowlan_status->gtk[status_idx].len = 291 gtk_data[notif_idx].key_len; 292 wowlan_status->gtk[status_idx].flags = 293 gtk_data[notif_idx].key_flags; 294 wowlan_status->gtk[status_idx].id = 295 wowlan_status->gtk[status_idx].flags & 296 IWL_WOWLAN_GTK_IDX_MASK; 297 memcpy(wowlan_status->gtk[status_idx].key, 298 gtk_data[notif_idx].key, 299 sizeof(gtk_data[notif_idx].key)); 300 301 /* The rsc for both gtk keys are stored in gtk[0]->sc->mcast_rsc 302 * The gtk ids can be any two numbers between 0 and 3, 303 * the id_map maps between the key id and the index in sc->mcast 304 */ 305 rsc_idx = 306 sc->mcast_key_id_map[wowlan_status->gtk[status_idx].id]; 307 iwl_mld_convert_gtk_resume_seq(&wowlan_status->gtk[status_idx], 308 sc, rsc_idx); 309 310 /* if it's as long as the TKIP encryption key, copy MIC key */ 311 if (wowlan_status->gtk[status_idx].len == 312 NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY) 313 memcpy(wowlan_status->gtk[status_idx].key + 314 NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 315 gtk_data[notif_idx].tkip_mic_key, 316 sizeof(gtk_data[notif_idx].tkip_mic_key)); 317 status_idx++; 318 } 319 } 320 321 static void 322 iwl_mld_convert_ptk_resume_seq(struct iwl_mld *mld, 323 struct iwl_mld_wowlan_status *wowlan_status, 324 const struct iwl_wowlan_all_rsc_tsc_v5 *sc) 325 { 326 struct ieee80211_key_seq *aes_seq = wowlan_status->ptk.aes_seq; 327 struct ieee80211_key_seq *tkip_seq = wowlan_status->ptk.tkip_seq; 328 329 BUILD_BUG_ON(ARRAY_SIZE(sc->ucast_rsc) != IWL_MAX_TID_COUNT); 330 331 for (int tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 332 iwl_mld_le64_to_aes_seq(sc->ucast_rsc[tid], &aes_seq[tid]); 333 iwl_mld_le64_to_tkip_seq(sc->ucast_rsc[tid], &tkip_seq[tid]); 334 } 335 } 336 337 static void 338 iwl_mld_convert_mcast_ipn(struct iwl_mld_mcast_key_data *key_status, 339 const struct iwl_wowlan_igtk_status *key) 340 { 341 struct ieee80211_key_seq *seq = 342 &key_status->igtk_bigtk.cmac_gmac_seq; 343 u8 ipn_len = ARRAY_SIZE(key->ipn); 344 345 BUILD_BUG_ON(ipn_len != ARRAY_SIZE(seq->aes_gmac.pn)); 346 BUILD_BUG_ON(ipn_len != ARRAY_SIZE(seq->aes_cmac.pn)); 347 BUILD_BUG_ON(offsetof(struct ieee80211_key_seq, aes_gmac) != 348 offsetof(struct ieee80211_key_seq, aes_cmac)); 349 350 /* mac80211 expects big endian for memcmp() to work, convert. 351 * We don't have the key cipher yet so copy to both to cmac and gmac 352 */ 353 for (int i = 0; i < ipn_len; i++) { 354 seq->aes_gmac.pn[i] = key->ipn[ipn_len - i - 1]; 355 seq->aes_cmac.pn[i] = key->ipn[ipn_len - i - 1]; 356 } 357 } 358 359 static void 360 iwl_mld_convert_igtk_resume_data(struct iwl_mld_wowlan_status *wowlan_status, 361 const struct iwl_wowlan_igtk_status *igtk) 362 { 363 BUILD_BUG_ON(sizeof(wowlan_status->igtk.key) < sizeof(igtk->key)); 364 365 if (!igtk->key_len) 366 return; 367 368 wowlan_status->igtk.len = igtk->key_len; 369 wowlan_status->igtk.flags = igtk->key_flags; 370 wowlan_status->igtk.id = 371 u32_get_bits(igtk->key_flags, 372 IWL_WOWLAN_IGTK_BIGTK_IDX_MASK) + 373 WOWLAN_IGTK_MIN_INDEX; 374 375 memcpy(wowlan_status->igtk.key, igtk->key, sizeof(igtk->key)); 376 iwl_mld_convert_mcast_ipn(&wowlan_status->igtk, igtk); 377 } 378 379 static void 380 iwl_mld_convert_bigtk_resume_data(struct iwl_mld_wowlan_status *wowlan_status, 381 const struct iwl_wowlan_igtk_status *bigtk) 382 { 383 int status_idx = 0; 384 385 BUILD_BUG_ON(ARRAY_SIZE(wowlan_status->bigtk) < WOWLAN_BIGTK_KEYS_NUM); 386 387 for (int notif_idx = 0; notif_idx < WOWLAN_BIGTK_KEYS_NUM; 388 notif_idx++) { 389 if (!bigtk[notif_idx].key_len) 390 continue; 391 392 wowlan_status->bigtk[status_idx].len = bigtk[notif_idx].key_len; 393 wowlan_status->bigtk[status_idx].flags = 394 bigtk[notif_idx].key_flags; 395 wowlan_status->bigtk[status_idx].id = 396 u32_get_bits(bigtk[notif_idx].key_flags, 397 IWL_WOWLAN_IGTK_BIGTK_IDX_MASK) 398 + WOWLAN_BIGTK_MIN_INDEX; 399 400 BUILD_BUG_ON(sizeof(wowlan_status->bigtk[status_idx].key) < 401 sizeof(bigtk[notif_idx].key)); 402 memcpy(wowlan_status->bigtk[status_idx].key, 403 bigtk[notif_idx].key, sizeof(bigtk[notif_idx].key)); 404 iwl_mld_convert_mcast_ipn(&wowlan_status->bigtk[status_idx], 405 &bigtk[notif_idx]); 406 status_idx++; 407 } 408 } 409 410 static bool 411 iwl_mld_handle_wowlan_info_notif(struct iwl_mld *mld, 412 struct iwl_mld_wowlan_status *wowlan_status, 413 struct iwl_rx_packet *pkt) 414 { 415 const struct iwl_wowlan_info_notif *notif = (void *)pkt->data; 416 u32 expected_len, len = iwl_rx_packet_payload_len(pkt); 417 418 expected_len = sizeof(*notif); 419 420 if (IWL_FW_CHECK(mld, len < expected_len, 421 "Invalid wowlan_info_notif (expected=%ud got=%ud)\n", 422 expected_len, len)) 423 return true; 424 425 if (IWL_FW_CHECK(mld, notif->tid_offloaded_tx != IWL_WOWLAN_OFFLOAD_TID, 426 "Invalid tid_offloaded_tx %d\n", 427 wowlan_status->tid_offloaded_tx)) 428 return true; 429 430 iwl_mld_convert_gtk_resume_data(mld, wowlan_status, notif->gtk, 431 ¬if->gtk[0].sc); 432 iwl_mld_convert_ptk_resume_seq(mld, wowlan_status, ¬if->gtk[0].sc); 433 /* only one igtk is passed by FW */ 434 iwl_mld_convert_igtk_resume_data(wowlan_status, ¬if->igtk[0]); 435 iwl_mld_convert_bigtk_resume_data(wowlan_status, notif->bigtk); 436 437 wowlan_status->replay_ctr = le64_to_cpu(notif->replay_ctr); 438 wowlan_status->pattern_number = le16_to_cpu(notif->pattern_number); 439 440 wowlan_status->tid_offloaded_tx = notif->tid_offloaded_tx; 441 wowlan_status->last_qos_seq = le16_to_cpu(notif->qos_seq_ctr); 442 wowlan_status->num_of_gtk_rekeys = 443 le32_to_cpu(notif->num_of_gtk_rekeys); 444 wowlan_status->wakeup_reasons = le32_to_cpu(notif->wakeup_reasons); 445 return false; 446 /* TODO: mlo_links (task=MLO)*/ 447 } 448 449 static bool 450 iwl_mld_handle_wake_pkt_notif(struct iwl_mld *mld, 451 struct iwl_mld_wowlan_status *wowlan_status, 452 struct iwl_rx_packet *pkt) 453 { 454 const struct iwl_wowlan_wake_pkt_notif *notif = (void *)pkt->data; 455 u32 actual_size, len = iwl_rx_packet_payload_len(pkt); 456 u32 expected_size = le32_to_cpu(notif->wake_packet_length); 457 458 if (IWL_FW_CHECK(mld, len < sizeof(*notif), 459 "Invalid WoWLAN wake packet notification (expected size=%zu got=%u)\n", 460 sizeof(*notif), len)) 461 return true; 462 463 if (IWL_FW_CHECK(mld, !(wowlan_status->wakeup_reasons & 464 IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT), 465 "Got wake packet but wakeup reason is %x\n", 466 wowlan_status->wakeup_reasons)) 467 return true; 468 469 actual_size = len - offsetof(struct iwl_wowlan_wake_pkt_notif, 470 wake_packet); 471 472 /* actual_size got the padding from the notification, remove it. */ 473 if (expected_size < actual_size) 474 actual_size = expected_size; 475 wowlan_status->wake_packet = kmemdup(notif->wake_packet, actual_size, 476 GFP_ATOMIC); 477 if (!wowlan_status->wake_packet) 478 return true; 479 480 wowlan_status->wake_packet_length = expected_size; 481 wowlan_status->wake_packet_bufsize = actual_size; 482 483 return false; 484 } 485 486 static void 487 iwl_mld_set_wake_packet(struct iwl_mld *mld, 488 struct ieee80211_vif *vif, 489 const struct iwl_mld_wowlan_status *wowlan_status, 490 struct cfg80211_wowlan_wakeup *wakeup, 491 struct sk_buff **_pkt) 492 { 493 int pkt_bufsize = wowlan_status->wake_packet_bufsize; 494 int expected_pktlen = wowlan_status->wake_packet_length; 495 const u8 *pktdata = wowlan_status->wake_packet; 496 const struct ieee80211_hdr *hdr = (const void *)pktdata; 497 int truncated = expected_pktlen - pkt_bufsize; 498 499 if (ieee80211_is_data(hdr->frame_control)) { 500 int hdrlen = ieee80211_hdrlen(hdr->frame_control); 501 int ivlen = 0, icvlen = 4; /* also FCS */ 502 503 struct sk_buff *pkt = alloc_skb(pkt_bufsize, GFP_KERNEL); 504 *_pkt = pkt; 505 if (!pkt) 506 return; 507 508 skb_put_data(pkt, pktdata, hdrlen); 509 pktdata += hdrlen; 510 pkt_bufsize -= hdrlen; 511 512 /* if truncated, FCS/ICV is (partially) gone */ 513 if (truncated >= icvlen) { 514 truncated -= icvlen; 515 icvlen = 0; 516 } else { 517 icvlen -= truncated; 518 truncated = 0; 519 } 520 521 pkt_bufsize -= ivlen + icvlen; 522 pktdata += ivlen; 523 524 skb_put_data(pkt, pktdata, pkt_bufsize); 525 526 if (ieee80211_data_to_8023(pkt, vif->addr, vif->type)) 527 return; 528 wakeup->packet = pkt->data; 529 wakeup->packet_present_len = pkt->len; 530 wakeup->packet_len = pkt->len - truncated; 531 wakeup->packet_80211 = false; 532 } else { 533 int fcslen = 4; 534 535 if (truncated >= 4) { 536 truncated -= 4; 537 fcslen = 0; 538 } else { 539 fcslen -= truncated; 540 truncated = 0; 541 } 542 pkt_bufsize -= fcslen; 543 wakeup->packet = wowlan_status->wake_packet; 544 wakeup->packet_present_len = pkt_bufsize; 545 wakeup->packet_len = expected_pktlen - truncated; 546 wakeup->packet_80211 = true; 547 } 548 } 549 550 static void 551 iwl_mld_report_wowlan_wakeup(struct iwl_mld *mld, 552 struct ieee80211_vif *vif, 553 struct iwl_mld_wowlan_status *wowlan_status) 554 { 555 struct sk_buff *pkt = NULL; 556 struct cfg80211_wowlan_wakeup wakeup = { 557 .pattern_idx = -1, 558 }; 559 u32 reasons = wowlan_status->wakeup_reasons; 560 561 if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) { 562 ieee80211_report_wowlan_wakeup(vif, NULL, GFP_KERNEL); 563 return; 564 } 565 566 pm_wakeup_event(mld->dev, 0); 567 568 if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET) 569 wakeup.magic_pkt = true; 570 571 if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN) 572 wakeup.pattern_idx = 573 wowlan_status->pattern_number; 574 575 if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 576 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH | 577 IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)) 578 wakeup.disconnect = true; 579 580 if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE) 581 wakeup.gtk_rekey_failure = true; 582 583 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 584 wakeup.rfkill_release = true; 585 586 if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST) 587 wakeup.eap_identity_req = true; 588 589 if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE) 590 wakeup.four_way_handshake = true; 591 592 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS) 593 wakeup.tcp_connlost = true; 594 595 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE) 596 wakeup.tcp_nomoretokens = true; 597 598 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET) 599 wakeup.tcp_match = true; 600 601 if (reasons & IWL_WAKEUP_BY_11W_UNPROTECTED_DEAUTH_OR_DISASSOC) 602 wakeup.unprot_deauth_disassoc = true; 603 604 if (wowlan_status->wake_packet) 605 iwl_mld_set_wake_packet(mld, vif, wowlan_status, &wakeup, &pkt); 606 607 ieee80211_report_wowlan_wakeup(vif, &wakeup, GFP_KERNEL); 608 kfree_skb(pkt); 609 } 610 611 static void 612 iwl_mld_set_key_rx_seq_tids(struct ieee80211_key_conf *key, 613 struct ieee80211_key_seq *seq) 614 { 615 int tid; 616 617 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) 618 ieee80211_set_key_rx_seq(key, tid, &seq[tid]); 619 } 620 621 static void 622 iwl_mld_set_key_rx_seq(struct ieee80211_key_conf *key, 623 struct iwl_mld_mcast_key_data *key_data) 624 { 625 switch (key->cipher) { 626 case WLAN_CIPHER_SUITE_CCMP: 627 case WLAN_CIPHER_SUITE_GCMP: 628 case WLAN_CIPHER_SUITE_GCMP_256: 629 iwl_mld_set_key_rx_seq_tids(key, 630 key_data->gtk.aes_seq); 631 break; 632 case WLAN_CIPHER_SUITE_TKIP: 633 iwl_mld_set_key_rx_seq_tids(key, 634 key_data->gtk.tkip_seq); 635 break; 636 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 637 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 638 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 639 case WLAN_CIPHER_SUITE_AES_CMAC: 640 /* igtk/bigtk ciphers*/ 641 ieee80211_set_key_rx_seq(key, 0, 642 &key_data->igtk_bigtk.cmac_gmac_seq); 643 break; 644 default: 645 WARN_ON(1); 646 } 647 } 648 649 static void 650 iwl_mld_update_ptk_rx_seq(struct iwl_mld *mld, 651 struct iwl_mld_wowlan_status *wowlan_status, 652 struct ieee80211_sta *sta, 653 struct ieee80211_key_conf *key, 654 bool is_tkip) 655 { 656 struct iwl_mld_sta *mld_sta = 657 iwl_mld_sta_from_mac80211(sta); 658 struct iwl_mld_ptk_pn *mld_ptk_pn = 659 wiphy_dereference(mld->wiphy, 660 mld_sta->ptk_pn[key->keyidx]); 661 662 iwl_mld_set_key_rx_seq_tids(key, is_tkip ? 663 wowlan_status->ptk.tkip_seq : 664 wowlan_status->ptk.aes_seq); 665 if (is_tkip) 666 return; 667 668 if (WARN_ON(!mld_ptk_pn)) 669 return; 670 671 for (int tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 672 for (int i = 1; i < mld->trans->info.num_rxqs; i++) 673 memcpy(mld_ptk_pn->q[i].pn[tid], 674 wowlan_status->ptk.aes_seq[tid].ccmp.pn, 675 IEEE80211_CCMP_PN_LEN); 676 } 677 } 678 679 static void 680 iwl_mld_resume_keys_iter(struct ieee80211_hw *hw, 681 struct ieee80211_vif *vif, 682 struct ieee80211_sta *sta, 683 struct ieee80211_key_conf *key, 684 void *_data) 685 { 686 struct iwl_mld_resume_key_iter_data *data = _data; 687 struct iwl_mld_wowlan_status *wowlan_status = data->wowlan_status; 688 u8 status_idx; 689 690 /* TODO: check key link id (task=MLO) */ 691 if (data->unhandled_cipher) 692 return; 693 694 switch (key->cipher) { 695 case WLAN_CIPHER_SUITE_WEP40: 696 case WLAN_CIPHER_SUITE_WEP104: 697 /* ignore WEP completely, nothing to do */ 698 return; 699 case WLAN_CIPHER_SUITE_CCMP: 700 case WLAN_CIPHER_SUITE_GCMP: 701 case WLAN_CIPHER_SUITE_GCMP_256: 702 case WLAN_CIPHER_SUITE_TKIP: 703 if (sta) { 704 iwl_mld_update_ptk_rx_seq(data->mld, wowlan_status, 705 sta, key, 706 key->cipher == 707 WLAN_CIPHER_SUITE_TKIP); 708 return; 709 } 710 711 if (WARN_ON(data->gtk_cipher && 712 data->gtk_cipher != key->cipher)) 713 return; 714 715 data->gtk_cipher = key->cipher; 716 status_idx = key->keyidx == wowlan_status->gtk[1].id; 717 iwl_mld_set_key_rx_seq(key, &wowlan_status->gtk[status_idx]); 718 break; 719 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 720 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 721 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 722 case WLAN_CIPHER_SUITE_AES_CMAC: 723 if (key->keyidx == 4 || key->keyidx == 5) { 724 if (WARN_ON(data->igtk_cipher && 725 data->igtk_cipher != key->cipher)) 726 return; 727 728 data->igtk_cipher = key->cipher; 729 if (key->keyidx == wowlan_status->igtk.id) 730 iwl_mld_set_key_rx_seq(key, &wowlan_status->igtk); 731 } 732 if (key->keyidx == 6 || key->keyidx == 7) { 733 if (WARN_ON(data->bigtk_cipher && 734 data->bigtk_cipher != key->cipher)) 735 return; 736 737 data->bigtk_cipher = key->cipher; 738 status_idx = key->keyidx == wowlan_status->bigtk[1].id; 739 iwl_mld_set_key_rx_seq(key, &wowlan_status->bigtk[status_idx]); 740 } 741 break; 742 default: 743 data->unhandled_cipher = true; 744 return; 745 } 746 data->num_keys++; 747 } 748 749 static void 750 iwl_mld_add_mcast_rekey(struct ieee80211_vif *vif, 751 struct iwl_mld *mld, 752 struct iwl_mld_mcast_key_data *key_data, 753 struct ieee80211_bss_conf *link_conf, 754 u32 cipher) 755 { 756 struct ieee80211_key_conf *key_config; 757 struct { 758 struct ieee80211_key_conf conf; 759 u8 key[WOWLAN_KEY_MAX_SIZE]; 760 } conf = { 761 .conf.cipher = cipher, 762 .conf.keyidx = key_data->id, 763 }; 764 int link_id = vif->active_links ? __ffs(vif->active_links) : -1; 765 766 BUILD_BUG_ON(WLAN_KEY_LEN_CCMP != WLAN_KEY_LEN_GCMP); 767 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_CCMP); 768 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_GCMP_256); 769 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_TKIP); 770 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_BIP_GMAC_128); 771 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_BIP_GMAC_256); 772 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_AES_CMAC); 773 BUILD_BUG_ON(sizeof(conf.key) < sizeof(key_data->key)); 774 775 if (!key_data->len) 776 return; 777 778 switch (cipher) { 779 case WLAN_CIPHER_SUITE_CCMP: 780 case WLAN_CIPHER_SUITE_GCMP: 781 conf.conf.keylen = WLAN_KEY_LEN_CCMP; 782 break; 783 case WLAN_CIPHER_SUITE_GCMP_256: 784 conf.conf.keylen = WLAN_KEY_LEN_GCMP_256; 785 break; 786 case WLAN_CIPHER_SUITE_TKIP: 787 conf.conf.keylen = WLAN_KEY_LEN_TKIP; 788 break; 789 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 790 conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_128; 791 break; 792 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 793 conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_256; 794 break; 795 case WLAN_CIPHER_SUITE_AES_CMAC: 796 conf.conf.keylen = WLAN_KEY_LEN_AES_CMAC; 797 break; 798 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 799 conf.conf.keylen = WLAN_KEY_LEN_BIP_CMAC_256; 800 break; 801 default: 802 WARN_ON(1); 803 } 804 805 memcpy(conf.conf.key, key_data->key, conf.conf.keylen); 806 key_config = ieee80211_gtk_rekey_add(vif, &conf.conf, link_id); 807 if (IS_ERR(key_config)) 808 return; 809 810 iwl_mld_set_key_rx_seq(key_config, key_data); 811 812 /* The FW holds only one igtk so we keep track of the valid one */ 813 if (key_config->keyidx == 4 || key_config->keyidx == 5) { 814 struct iwl_mld_link *mld_link = 815 iwl_mld_link_from_mac80211(link_conf); 816 817 /* If we had more than one rekey, mac80211 will tell us to 818 * remove the old and add the new so we will update the IGTK in 819 * drv_set_key 820 */ 821 if (mld_link->igtk && mld_link->igtk != key_config) { 822 /* mark the old IGTK as not in FW */ 823 mld_link->igtk->hw_key_idx = STA_KEY_IDX_INVALID; 824 mld_link->igtk = key_config; 825 } 826 } 827 828 /* Also keep track of the new BIGTK */ 829 if ((key_config->keyidx == 6 || key_config->keyidx == 7) && 830 vif->type == NL80211_IFTYPE_STATION) { 831 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 832 833 rcu_assign_pointer(mld_vif->bigtks[key_config->keyidx - 6], key_config); 834 } 835 } 836 837 static void 838 iwl_mld_add_all_rekeys(struct ieee80211_vif *vif, 839 struct iwl_mld_wowlan_status *wowlan_status, 840 struct iwl_mld_resume_key_iter_data *key_iter_data, 841 struct ieee80211_bss_conf *link_conf) 842 { 843 int i; 844 845 for (i = 0; i < ARRAY_SIZE(wowlan_status->gtk); i++) 846 iwl_mld_add_mcast_rekey(vif, key_iter_data->mld, 847 &wowlan_status->gtk[i], 848 link_conf, 849 key_iter_data->gtk_cipher); 850 851 iwl_mld_add_mcast_rekey(vif, key_iter_data->mld, 852 &wowlan_status->igtk, 853 link_conf, key_iter_data->igtk_cipher); 854 855 for (i = 0; i < ARRAY_SIZE(wowlan_status->bigtk); i++) 856 iwl_mld_add_mcast_rekey(vif, key_iter_data->mld, 857 &wowlan_status->bigtk[i], 858 link_conf, 859 key_iter_data->bigtk_cipher); 860 } 861 862 static bool 863 iwl_mld_update_sec_keys(struct iwl_mld *mld, 864 struct ieee80211_vif *vif, 865 struct iwl_mld_wowlan_status *wowlan_status) 866 { 867 int link_id = vif->active_links ? __ffs(vif->active_links) : 0; 868 struct ieee80211_bss_conf *link_conf = 869 link_conf_dereference_protected(vif, link_id); 870 __be64 replay_ctr = cpu_to_be64(wowlan_status->replay_ctr); 871 struct iwl_mld_resume_key_iter_data key_iter_data = { 872 .mld = mld, 873 .wowlan_status = wowlan_status, 874 }; 875 876 if (WARN_ON(!link_conf)) 877 return false; 878 879 ieee80211_iter_keys(mld->hw, vif, iwl_mld_resume_keys_iter, 880 &key_iter_data); 881 882 if (key_iter_data.unhandled_cipher) 883 return false; 884 885 IWL_DEBUG_WOWLAN(mld, 886 "Number of installed keys: %d, Number of rekeys: %d\n", 887 key_iter_data.num_keys, 888 wowlan_status->num_of_gtk_rekeys); 889 890 if (!key_iter_data.num_keys || !wowlan_status->num_of_gtk_rekeys) 891 return true; 892 893 iwl_mld_add_all_rekeys(vif, wowlan_status, &key_iter_data, 894 link_conf); 895 896 ieee80211_gtk_rekey_notify(vif, link_conf->bssid, 897 (void *)&replay_ctr, GFP_KERNEL); 898 /* TODO: MLO rekey (task=MLO) */ 899 return true; 900 } 901 902 static bool 903 iwl_mld_process_wowlan_status(struct iwl_mld *mld, 904 struct ieee80211_vif *vif, 905 struct iwl_mld_wowlan_status *wowlan_status) 906 { 907 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 908 struct ieee80211_sta *ap_sta = mld_vif->ap_sta; 909 struct iwl_mld_txq *mld_txq; 910 911 iwl_mld_report_wowlan_wakeup(mld, vif, wowlan_status); 912 913 if (WARN_ON(!ap_sta)) 914 return false; 915 916 mld_txq = 917 iwl_mld_txq_from_mac80211(ap_sta->txq[wowlan_status->tid_offloaded_tx]); 918 919 /* Update the pointers of the Tx queue that may have moved during 920 * suspend if the firmware sent frames. 921 * The firmware stores last-used value, we store next value. 922 */ 923 WARN_ON(!mld_txq->status.allocated); 924 iwl_trans_set_q_ptrs(mld->trans, mld_txq->fw_id, 925 (wowlan_status->last_qos_seq + 926 0x10) >> 4); 927 928 if (!iwl_mld_update_sec_keys(mld, vif, wowlan_status)) 929 return false; 930 931 if (wowlan_status->wakeup_reasons & 932 (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 933 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH | 934 IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)) 935 return false; 936 937 return true; 938 } 939 940 static bool 941 iwl_mld_netdetect_match_info_handler(struct iwl_mld *mld, 942 struct iwl_mld_resume_data *resume_data, 943 struct iwl_rx_packet *pkt) 944 { 945 struct iwl_mld_netdetect_res *results = resume_data->netdetect_res; 946 const struct iwl_scan_offload_match_info *notif = (void *)pkt->data; 947 u32 len = iwl_rx_packet_payload_len(pkt); 948 949 if (IWL_FW_CHECK(mld, !mld->netdetect, 950 "Got scan match info notif when mld->netdetect==%d\n", 951 mld->netdetect)) 952 return true; 953 954 if (IWL_FW_CHECK(mld, len < sizeof(*notif), 955 "Invalid scan offload match notif of length: %d\n", 956 len)) 957 return true; 958 959 if (IWL_FW_CHECK(mld, resume_data->wowlan_status->wakeup_reasons != 960 IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS, 961 "Ignore scan match info: unexpected wakeup reason (expected=0x%x got=0x%x)\n", 962 IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS, 963 resume_data->wowlan_status->wakeup_reasons)) 964 return true; 965 966 results->matched_profiles = le32_to_cpu(notif->matched_profiles); 967 IWL_DEBUG_WOWLAN(mld, "number of matched profiles=%u\n", 968 results->matched_profiles); 969 970 if (results->matched_profiles) 971 memcpy(results->matches, notif->matches, 972 NETDETECT_QUERY_BUF_LEN); 973 974 /* No scan should be active at this point */ 975 mld->scan.status = 0; 976 memset(mld->scan.uid_status, 0, sizeof(mld->scan.uid_status)); 977 return false; 978 } 979 980 static void 981 iwl_mld_set_netdetect_info(struct iwl_mld *mld, 982 const struct cfg80211_sched_scan_request *netdetect_cfg, 983 struct cfg80211_wowlan_nd_info *netdetect_info, 984 struct iwl_mld_netdetect_res *netdetect_res, 985 unsigned long matched_profiles) 986 { 987 int i; 988 989 for_each_set_bit(i, &matched_profiles, netdetect_cfg->n_match_sets) { 990 struct cfg80211_wowlan_nd_match *match; 991 int idx, j, n_channels = 0; 992 struct iwl_scan_offload_profile_match *matches = 993 (void *)netdetect_res->matches; 994 995 for (int k = 0; k < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; k++) 996 n_channels += 997 hweight8(matches[i].matching_channels[k]); 998 match = kzalloc(struct_size(match, channels, n_channels), 999 GFP_KERNEL); 1000 if (!match) 1001 return; 1002 1003 netdetect_info->matches[netdetect_info->n_matches] = match; 1004 netdetect_info->n_matches++; 1005 1006 /* We inverted the order of the SSIDs in the scan 1007 * request, so invert the index here. 1008 */ 1009 idx = netdetect_cfg->n_match_sets - i - 1; 1010 match->ssid.ssid_len = 1011 netdetect_cfg->match_sets[idx].ssid.ssid_len; 1012 memcpy(match->ssid.ssid, 1013 netdetect_cfg->match_sets[idx].ssid.ssid, 1014 match->ssid.ssid_len); 1015 1016 if (netdetect_cfg->n_channels < n_channels) 1017 continue; 1018 1019 for_each_set_bit(j, 1020 (unsigned long *)&matches[i].matching_channels[0], 1021 sizeof(matches[i].matching_channels)) { 1022 match->channels[match->n_channels] = 1023 netdetect_cfg->channels[j]->center_freq; 1024 match->n_channels++; 1025 } 1026 } 1027 } 1028 1029 static void 1030 iwl_mld_process_netdetect_res(struct iwl_mld *mld, 1031 struct ieee80211_vif *vif, 1032 struct iwl_mld_resume_data *resume_data) 1033 { 1034 struct cfg80211_wowlan_nd_info *netdetect_info = NULL; 1035 const struct cfg80211_sched_scan_request *netdetect_cfg; 1036 struct cfg80211_wowlan_wakeup wakeup = { 1037 .pattern_idx = -1, 1038 }; 1039 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; 1040 unsigned long matched_profiles; 1041 u32 wakeup_reasons; 1042 int n_matches; 1043 1044 lockdep_assert_wiphy(mld->wiphy); 1045 1046 if (WARN_ON(!mld->wiphy->wowlan_config || 1047 !mld->wiphy->wowlan_config->nd_config)) { 1048 IWL_DEBUG_WOWLAN(mld, 1049 "Netdetect isn't configured on resume flow\n"); 1050 goto out; 1051 } 1052 1053 netdetect_cfg = mld->wiphy->wowlan_config->nd_config; 1054 wakeup_reasons = resume_data->wowlan_status->wakeup_reasons; 1055 1056 if (wakeup_reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 1057 wakeup.rfkill_release = true; 1058 1059 if (wakeup_reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) 1060 goto out; 1061 1062 if (!resume_data->netdetect_res->matched_profiles) { 1063 IWL_DEBUG_WOWLAN(mld, 1064 "Netdetect results aren't valid\n"); 1065 wakeup_report = NULL; 1066 goto out; 1067 } 1068 1069 matched_profiles = resume_data->netdetect_res->matched_profiles; 1070 if (!netdetect_cfg->n_match_sets) { 1071 IWL_DEBUG_WOWLAN(mld, 1072 "No netdetect match sets are configured\n"); 1073 goto out; 1074 } 1075 n_matches = hweight_long(matched_profiles); 1076 netdetect_info = kzalloc(struct_size(netdetect_info, matches, 1077 n_matches), GFP_KERNEL); 1078 if (netdetect_info) 1079 iwl_mld_set_netdetect_info(mld, netdetect_cfg, netdetect_info, 1080 resume_data->netdetect_res, 1081 matched_profiles); 1082 1083 wakeup.net_detect = netdetect_info; 1084 out: 1085 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); 1086 if (netdetect_info) { 1087 for (int i = 0; i < netdetect_info->n_matches; i++) 1088 kfree(netdetect_info->matches[i]); 1089 kfree(netdetect_info); 1090 } 1091 } 1092 1093 static bool iwl_mld_handle_d3_notif(struct iwl_notif_wait_data *notif_wait, 1094 struct iwl_rx_packet *pkt, void *data) 1095 { 1096 struct iwl_mld_resume_data *resume_data = data; 1097 struct iwl_mld *mld = 1098 container_of(notif_wait, struct iwl_mld, notif_wait); 1099 1100 switch (WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) { 1101 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION): { 1102 if (resume_data->notifs_received & IWL_D3_NOTIF_WOWLAN_INFO) { 1103 IWL_DEBUG_WOWLAN(mld, 1104 "got additional wowlan_info notif\n"); 1105 break; 1106 } 1107 resume_data->notif_handling_err = 1108 iwl_mld_handle_wowlan_info_notif(mld, 1109 resume_data->wowlan_status, 1110 pkt); 1111 resume_data->notifs_received |= IWL_D3_NOTIF_WOWLAN_INFO; 1112 1113 if (resume_data->wowlan_status->wakeup_reasons & 1114 IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT) 1115 resume_data->notifs_expected |= 1116 IWL_D3_NOTIF_WOWLAN_WAKE_PKT; 1117 break; 1118 } 1119 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION): { 1120 if (resume_data->notifs_received & 1121 IWL_D3_NOTIF_WOWLAN_WAKE_PKT) { 1122 /* We shouldn't get two wake packet notifications */ 1123 IWL_DEBUG_WOWLAN(mld, 1124 "Got additional wowlan wake packet notification\n"); 1125 break; 1126 } 1127 resume_data->notif_handling_err = 1128 iwl_mld_handle_wake_pkt_notif(mld, 1129 resume_data->wowlan_status, 1130 pkt); 1131 resume_data->notifs_received |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT; 1132 break; 1133 } 1134 case WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF): { 1135 if (resume_data->notifs_received & IWL_D3_ND_MATCH_INFO) { 1136 IWL_ERR(mld, 1137 "Got additional netdetect match info\n"); 1138 break; 1139 } 1140 1141 resume_data->notif_handling_err = 1142 iwl_mld_netdetect_match_info_handler(mld, resume_data, 1143 pkt); 1144 resume_data->notifs_received |= IWL_D3_ND_MATCH_INFO; 1145 break; 1146 } 1147 case WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION): { 1148 struct iwl_d3_end_notif *notif = (void *)pkt->data; 1149 1150 resume_data->d3_end_flags = le32_to_cpu(notif->flags); 1151 resume_data->notifs_received |= IWL_D3_NOTIF_D3_END_NOTIF; 1152 break; 1153 } 1154 default: 1155 WARN_ON(1); 1156 } 1157 1158 return resume_data->notifs_received == resume_data->notifs_expected; 1159 } 1160 1161 #define IWL_MLD_D3_NOTIF_TIMEOUT (HZ / 3) 1162 1163 static int iwl_mld_wait_d3_notif(struct iwl_mld *mld, 1164 struct iwl_mld_resume_data *resume_data, 1165 bool with_wowlan) 1166 { 1167 static const u16 wowlan_resume_notif[] = { 1168 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION), 1169 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION), 1170 WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF), 1171 WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION) 1172 }; 1173 static const u16 d3_resume_notif[] = { 1174 WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION) 1175 }; 1176 struct iwl_notification_wait wait_d3_notif; 1177 enum iwl_d3_status d3_status; 1178 int ret; 1179 1180 if (with_wowlan) 1181 iwl_init_notification_wait(&mld->notif_wait, &wait_d3_notif, 1182 wowlan_resume_notif, 1183 ARRAY_SIZE(wowlan_resume_notif), 1184 iwl_mld_handle_d3_notif, 1185 resume_data); 1186 else 1187 iwl_init_notification_wait(&mld->notif_wait, &wait_d3_notif, 1188 d3_resume_notif, 1189 ARRAY_SIZE(d3_resume_notif), 1190 iwl_mld_handle_d3_notif, 1191 resume_data); 1192 1193 ret = iwl_trans_d3_resume(mld->trans, &d3_status, false, false); 1194 if (ret || d3_status != IWL_D3_STATUS_ALIVE) { 1195 if (d3_status != IWL_D3_STATUS_ALIVE) { 1196 IWL_INFO(mld, "Device was reset during suspend\n"); 1197 ret = -ENOENT; 1198 } else { 1199 IWL_ERR(mld, "Transport resume failed\n"); 1200 } 1201 iwl_remove_notification(&mld->notif_wait, &wait_d3_notif); 1202 return ret; 1203 } 1204 1205 ret = iwl_wait_notification(&mld->notif_wait, &wait_d3_notif, 1206 IWL_MLD_D3_NOTIF_TIMEOUT); 1207 if (ret) 1208 IWL_ERR(mld, "Couldn't get the d3 notif %d\n", ret); 1209 1210 if (resume_data->notif_handling_err) 1211 ret = -EIO; 1212 1213 return ret; 1214 } 1215 1216 int iwl_mld_no_wowlan_suspend(struct iwl_mld *mld) 1217 { 1218 struct iwl_d3_manager_config d3_cfg_cmd_data = {}; 1219 int ret; 1220 1221 if (mld->debug_max_sleep) { 1222 d3_cfg_cmd_data.wakeup_host_timer = 1223 cpu_to_le32(mld->debug_max_sleep); 1224 d3_cfg_cmd_data.wakeup_flags = 1225 cpu_to_le32(IWL_WAKEUP_D3_HOST_TIMER); 1226 } 1227 1228 lockdep_assert_wiphy(mld->wiphy); 1229 1230 IWL_DEBUG_WOWLAN(mld, "Starting the no wowlan suspend flow\n"); 1231 1232 iwl_mld_low_latency_stop(mld); 1233 1234 /* This will happen if iwl_mld_supsend failed with FW error */ 1235 if (mld->trans->state == IWL_TRANS_NO_FW && 1236 test_bit(STATUS_FW_ERROR, &mld->trans->status)) 1237 return -ENODEV; 1238 1239 ret = iwl_mld_update_device_power(mld, true); 1240 if (ret) { 1241 IWL_ERR(mld, 1242 "d3 suspend: couldn't send power_device %d\n", ret); 1243 goto out; 1244 } 1245 1246 ret = iwl_mld_send_cmd_pdu(mld, D3_CONFIG_CMD, 1247 &d3_cfg_cmd_data); 1248 if (ret) { 1249 IWL_ERR(mld, 1250 "d3 suspend: couldn't send D3_CONFIG_CMD %d\n", ret); 1251 goto out; 1252 } 1253 1254 ret = iwl_trans_d3_suspend(mld->trans, false, false); 1255 if (ret) { 1256 IWL_ERR(mld, "d3 suspend: trans_d3_suspend failed %d\n", ret); 1257 } else { 1258 /* Async notification might send hcmds, which is not allowed in suspend */ 1259 iwl_mld_cancel_async_notifications(mld); 1260 mld->fw_status.in_d3 = true; 1261 } 1262 1263 out: 1264 if (ret) { 1265 mld->trans->state = IWL_TRANS_NO_FW; 1266 set_bit(STATUS_FW_ERROR, &mld->trans->status); 1267 } 1268 1269 return ret; 1270 } 1271 1272 int iwl_mld_no_wowlan_resume(struct iwl_mld *mld) 1273 { 1274 struct iwl_mld_resume_data resume_data = { 1275 .notifs_expected = 1276 IWL_D3_NOTIF_D3_END_NOTIF, 1277 }; 1278 int ret; 1279 1280 lockdep_assert_wiphy(mld->wiphy); 1281 1282 IWL_DEBUG_WOWLAN(mld, "Starting the no wowlan resume flow\n"); 1283 1284 mld->fw_status.in_d3 = false; 1285 iwl_fw_dbg_read_d3_debug_data(&mld->fwrt); 1286 1287 ret = iwl_mld_wait_d3_notif(mld, &resume_data, false); 1288 1289 if (!ret && (resume_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)) 1290 return -ENODEV; 1291 1292 if (ret) { 1293 mld->trans->state = IWL_TRANS_NO_FW; 1294 set_bit(STATUS_FW_ERROR, &mld->trans->status); 1295 return ret; 1296 } 1297 iwl_mld_low_latency_restart(mld); 1298 1299 return iwl_mld_update_device_power(mld, false); 1300 } 1301 1302 static void 1303 iwl_mld_aes_seq_to_le64_pn(struct ieee80211_key_conf *key, 1304 __le64 *key_rsc) 1305 { 1306 for (int i = 0; i < IWL_MAX_TID_COUNT; i++) { 1307 struct ieee80211_key_seq seq; 1308 u8 *pn = key->cipher == WLAN_CIPHER_SUITE_CCMP ? seq.ccmp.pn : 1309 seq.gcmp.pn; 1310 1311 ieee80211_get_key_rx_seq(key, i, &seq); 1312 key_rsc[i] = cpu_to_le64((u64)pn[5] | 1313 ((u64)pn[4] << 8) | 1314 ((u64)pn[3] << 16) | 1315 ((u64)pn[2] << 24) | 1316 ((u64)pn[1] << 32) | 1317 ((u64)pn[0] << 40)); 1318 } 1319 } 1320 1321 static void 1322 iwl_mld_suspend_set_ucast_pn(struct iwl_mld *mld, struct ieee80211_sta *sta, 1323 struct ieee80211_key_conf *key, __le64 *key_rsc) 1324 { 1325 struct iwl_mld_sta *mld_sta = 1326 iwl_mld_sta_from_mac80211(sta); 1327 struct iwl_mld_ptk_pn *mld_ptk_pn; 1328 1329 if (WARN_ON(key->keyidx >= ARRAY_SIZE(mld_sta->ptk_pn))) 1330 return; 1331 1332 mld_ptk_pn = wiphy_dereference(mld->wiphy, 1333 mld_sta->ptk_pn[key->keyidx]); 1334 if (WARN_ON(!mld_ptk_pn)) 1335 return; 1336 1337 for (int tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1338 struct ieee80211_key_seq seq; 1339 u8 *max_pn = seq.ccmp.pn; 1340 1341 /* get the PN from mac80211, used on the default queue */ 1342 ieee80211_get_key_rx_seq(key, tid, &seq); 1343 1344 /* and use the internal data for all queues */ 1345 for (int que = 1; que < mld->trans->info.num_rxqs; que++) { 1346 u8 *cur_pn = mld_ptk_pn->q[que].pn[tid]; 1347 1348 if (memcmp(max_pn, cur_pn, IEEE80211_CCMP_PN_LEN) < 0) 1349 max_pn = cur_pn; 1350 } 1351 key_rsc[tid] = cpu_to_le64((u64)max_pn[5] | 1352 ((u64)max_pn[4] << 8) | 1353 ((u64)max_pn[3] << 16) | 1354 ((u64)max_pn[2] << 24) | 1355 ((u64)max_pn[1] << 32) | 1356 ((u64)max_pn[0] << 40)); 1357 } 1358 } 1359 1360 static void 1361 iwl_mld_suspend_convert_tkip_ipn(struct ieee80211_key_conf *key, 1362 __le64 *rsc) 1363 { 1364 struct ieee80211_key_seq seq; 1365 1366 for (int i = 0; i < IWL_MAX_TID_COUNT; i++) { 1367 ieee80211_get_key_rx_seq(key, i, &seq); 1368 rsc[i] = 1369 cpu_to_le64(((u64)seq.tkip.iv32 << 16) | 1370 seq.tkip.iv16); 1371 } 1372 } 1373 1374 static void 1375 iwl_mld_suspend_key_data_iter(struct ieee80211_hw *hw, 1376 struct ieee80211_vif *vif, 1377 struct ieee80211_sta *sta, 1378 struct ieee80211_key_conf *key, 1379 void *_data) 1380 { 1381 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1382 struct iwl_mld_suspend_key_iter_data *data = _data; 1383 __le64 *key_rsc; 1384 __le32 cipher = 0; 1385 1386 switch (key->cipher) { 1387 case WLAN_CIPHER_SUITE_CCMP: 1388 cipher = cpu_to_le32(STA_KEY_FLG_CCM); 1389 fallthrough; 1390 case WLAN_CIPHER_SUITE_GCMP: 1391 case WLAN_CIPHER_SUITE_GCMP_256: 1392 if (!cipher) 1393 cipher = cpu_to_le32(STA_KEY_FLG_GCMP); 1394 fallthrough; 1395 case WLAN_CIPHER_SUITE_TKIP: 1396 if (!cipher) 1397 cipher = cpu_to_le32(STA_KEY_FLG_TKIP); 1398 if (sta) { 1399 key_rsc = data->rsc->ucast_rsc; 1400 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) 1401 iwl_mld_suspend_convert_tkip_ipn(key, key_rsc); 1402 else 1403 iwl_mld_suspend_set_ucast_pn(mld, sta, key, 1404 key_rsc); 1405 1406 data->have_rsc = true; 1407 return; 1408 } 1409 /* We're iterating from old to new, there're 4 possible 1410 * gtk ids, and only the last two keys matter 1411 */ 1412 if (WARN_ON(data->gtks >= 1413 ARRAY_SIZE(data->found_gtk_idx))) 1414 return; 1415 1416 if (WARN_ON(key->keyidx >= 1417 ARRAY_SIZE(data->rsc->mcast_key_id_map))) 1418 return; 1419 data->gtk_cipher = cipher; 1420 data->found_gtk_idx[data->gtks] = key->keyidx; 1421 key_rsc = data->rsc->mcast_rsc[data->gtks % 2]; 1422 data->rsc->mcast_key_id_map[key->keyidx] = 1423 data->gtks % 2; 1424 1425 if (data->gtks >= 2) { 1426 int prev = data->gtks % 2; 1427 int prev_idx = data->found_gtk_idx[prev]; 1428 1429 data->rsc->mcast_key_id_map[prev_idx] = 1430 IWL_MCAST_KEY_MAP_INVALID; 1431 } 1432 1433 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) 1434 iwl_mld_suspend_convert_tkip_ipn(key, key_rsc); 1435 else 1436 iwl_mld_aes_seq_to_le64_pn(key, key_rsc); 1437 1438 data->gtks++; 1439 data->have_rsc = true; 1440 break; 1441 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 1442 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 1443 cipher = cpu_to_le32(STA_KEY_FLG_GCMP); 1444 fallthrough; 1445 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 1446 case WLAN_CIPHER_SUITE_AES_CMAC: 1447 if (!cipher) 1448 cipher = cpu_to_le32(STA_KEY_FLG_CCM); 1449 if (key->keyidx == 4 || key->keyidx == 5) 1450 data->igtk_cipher = cipher; 1451 1452 if (key->keyidx == 6 || key->keyidx == 7) 1453 data->bigtk_cipher = cipher; 1454 1455 break; 1456 } 1457 } 1458 1459 static int 1460 iwl_mld_send_kek_kck_cmd(struct iwl_mld *mld, 1461 struct iwl_mld_vif *mld_vif, 1462 struct iwl_mld_suspend_key_iter_data data, 1463 int ap_sta_id) 1464 { 1465 struct iwl_wowlan_kek_kck_material_cmd_v4 kek_kck_cmd = {}; 1466 struct iwl_mld_rekey_data *rekey_data = 1467 &mld_vif->wowlan_data.rekey_data; 1468 1469 memcpy(kek_kck_cmd.kck, rekey_data->kck, 1470 rekey_data->kck_len); 1471 kek_kck_cmd.kck_len = cpu_to_le16(rekey_data->kck_len); 1472 memcpy(kek_kck_cmd.kek, rekey_data->kek, 1473 rekey_data->kek_len); 1474 kek_kck_cmd.kek_len = cpu_to_le16(rekey_data->kek_len); 1475 kek_kck_cmd.replay_ctr = rekey_data->replay_ctr; 1476 kek_kck_cmd.akm = cpu_to_le32(rekey_data->akm); 1477 kek_kck_cmd.sta_id = cpu_to_le32(ap_sta_id); 1478 kek_kck_cmd.gtk_cipher = data.gtk_cipher; 1479 kek_kck_cmd.igtk_cipher = data.igtk_cipher; 1480 kek_kck_cmd.bigtk_cipher = data.bigtk_cipher; 1481 1482 IWL_DEBUG_WOWLAN(mld, "setting akm %d\n", 1483 rekey_data->akm); 1484 1485 return iwl_mld_send_cmd_pdu(mld, WOWLAN_KEK_KCK_MATERIAL, 1486 &kek_kck_cmd); 1487 } 1488 1489 static int 1490 iwl_mld_suspend_send_security_cmds(struct iwl_mld *mld, 1491 struct ieee80211_vif *vif, 1492 struct iwl_mld_vif *mld_vif, 1493 int ap_sta_id) 1494 { 1495 struct iwl_mld_suspend_key_iter_data data = {}; 1496 int ret; 1497 1498 data.rsc = kzalloc(sizeof(*data.rsc), GFP_KERNEL); 1499 if (!data.rsc) 1500 return -ENOMEM; 1501 1502 memset(data.rsc->mcast_key_id_map, IWL_MCAST_KEY_MAP_INVALID, 1503 ARRAY_SIZE(data.rsc->mcast_key_id_map)); 1504 1505 data.rsc->sta_id = cpu_to_le32(ap_sta_id); 1506 ieee80211_iter_keys(mld->hw, vif, 1507 iwl_mld_suspend_key_data_iter, 1508 &data); 1509 1510 if (data.have_rsc) 1511 ret = iwl_mld_send_cmd_pdu(mld, WOWLAN_TSC_RSC_PARAM, 1512 data.rsc); 1513 else 1514 ret = 0; 1515 1516 if (!ret && mld_vif->wowlan_data.rekey_data.valid) 1517 ret = iwl_mld_send_kek_kck_cmd(mld, mld_vif, data, ap_sta_id); 1518 1519 kfree(data.rsc); 1520 1521 return ret; 1522 } 1523 1524 static void 1525 iwl_mld_set_wowlan_config_cmd(struct iwl_mld *mld, 1526 struct cfg80211_wowlan *wowlan, 1527 struct iwl_wowlan_config_cmd *wowlan_config_cmd, 1528 struct ieee80211_sta *ap_sta) 1529 { 1530 wowlan_config_cmd->is_11n_connection = 1531 ap_sta->deflink.ht_cap.ht_supported; 1532 wowlan_config_cmd->flags = ENABLE_L3_FILTERING | 1533 ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING; 1534 1535 if (ap_sta->mfp) 1536 wowlan_config_cmd->flags |= IS_11W_ASSOC; 1537 1538 if (wowlan->disconnect) 1539 wowlan_config_cmd->wakeup_filter |= 1540 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS | 1541 IWL_WOWLAN_WAKEUP_LINK_CHANGE); 1542 if (wowlan->magic_pkt) 1543 wowlan_config_cmd->wakeup_filter |= 1544 cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET); 1545 if (wowlan->gtk_rekey_failure) 1546 wowlan_config_cmd->wakeup_filter |= 1547 cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL); 1548 if (wowlan->eap_identity_req) 1549 wowlan_config_cmd->wakeup_filter |= 1550 cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ); 1551 if (wowlan->four_way_handshake) 1552 wowlan_config_cmd->wakeup_filter |= 1553 cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE); 1554 if (wowlan->n_patterns) 1555 wowlan_config_cmd->wakeup_filter |= 1556 cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH); 1557 1558 if (wowlan->rfkill_release) 1559 wowlan_config_cmd->wakeup_filter |= 1560 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT); 1561 1562 if (wowlan->any) { 1563 wowlan_config_cmd->wakeup_filter |= 1564 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS | 1565 IWL_WOWLAN_WAKEUP_LINK_CHANGE | 1566 IWL_WOWLAN_WAKEUP_RX_FRAME | 1567 IWL_WOWLAN_WAKEUP_BCN_FILTERING); 1568 } 1569 } 1570 1571 static int iwl_mld_send_patterns(struct iwl_mld *mld, 1572 struct cfg80211_wowlan *wowlan, 1573 int ap_sta_id) 1574 { 1575 struct iwl_wowlan_patterns_cmd *pattern_cmd; 1576 struct iwl_host_cmd cmd = { 1577 .id = WOWLAN_PATTERNS, 1578 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 1579 }; 1580 int ret; 1581 1582 if (!wowlan->n_patterns) 1583 return 0; 1584 1585 cmd.len[0] = struct_size(pattern_cmd, patterns, wowlan->n_patterns); 1586 1587 pattern_cmd = kzalloc(cmd.len[0], GFP_KERNEL); 1588 if (!pattern_cmd) 1589 return -ENOMEM; 1590 1591 pattern_cmd->n_patterns = wowlan->n_patterns; 1592 pattern_cmd->sta_id = ap_sta_id; 1593 1594 for (int i = 0; i < wowlan->n_patterns; i++) { 1595 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8); 1596 1597 pattern_cmd->patterns[i].pattern_type = 1598 WOWLAN_PATTERN_TYPE_BITMASK; 1599 1600 memcpy(&pattern_cmd->patterns[i].u.bitmask.mask, 1601 wowlan->patterns[i].mask, mask_len); 1602 memcpy(&pattern_cmd->patterns[i].u.bitmask.pattern, 1603 wowlan->patterns[i].pattern, 1604 wowlan->patterns[i].pattern_len); 1605 pattern_cmd->patterns[i].u.bitmask.mask_size = mask_len; 1606 pattern_cmd->patterns[i].u.bitmask.pattern_size = 1607 wowlan->patterns[i].pattern_len; 1608 } 1609 1610 cmd.data[0] = pattern_cmd; 1611 ret = iwl_mld_send_cmd(mld, &cmd); 1612 kfree(pattern_cmd); 1613 return ret; 1614 } 1615 1616 static int 1617 iwl_mld_send_proto_offload(struct iwl_mld *mld, 1618 struct ieee80211_vif *vif, 1619 u8 ap_sta_id) 1620 { 1621 struct iwl_proto_offload_cmd_v4 *cmd __free(kfree); 1622 struct iwl_host_cmd hcmd = { 1623 .id = PROT_OFFLOAD_CONFIG_CMD, 1624 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 1625 .len[0] = sizeof(*cmd), 1626 }; 1627 u32 enabled = 0; 1628 1629 cmd = kzalloc(hcmd.len[0], GFP_KERNEL); 1630 1631 #if IS_ENABLED(CONFIG_IPV6) 1632 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 1633 struct iwl_mld_wowlan_data *wowlan_data = &mld_vif->wowlan_data; 1634 struct iwl_ns_config *nsc; 1635 struct iwl_targ_addr *addrs; 1636 int n_nsc, n_addrs; 1637 int i, c; 1638 int num_skipped = 0; 1639 1640 nsc = cmd->ns_config; 1641 n_nsc = IWL_PROTO_OFFLOAD_NUM_NS_CONFIG_V3L; 1642 addrs = cmd->targ_addrs; 1643 n_addrs = IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V3L; 1644 1645 /* For each address we have (and that will fit) fill a target 1646 * address struct and combine for NS offload structs with the 1647 * solicited node addresses. 1648 */ 1649 for (i = 0, c = 0; 1650 i < wowlan_data->num_target_ipv6_addrs && 1651 i < n_addrs && c < n_nsc; i++) { 1652 int j; 1653 struct in6_addr solicited_addr; 1654 1655 /* Because ns is offloaded skip tentative address to avoid 1656 * violating RFC4862. 1657 */ 1658 if (test_bit(i, wowlan_data->tentative_addrs)) { 1659 num_skipped++; 1660 continue; 1661 } 1662 1663 addrconf_addr_solict_mult(&wowlan_data->target_ipv6_addrs[i], 1664 &solicited_addr); 1665 for (j = 0; j < n_nsc && j < c; j++) 1666 if (ipv6_addr_cmp(&nsc[j].dest_ipv6_addr, 1667 &solicited_addr) == 0) 1668 break; 1669 if (j == c) 1670 c++; 1671 addrs[i].addr = wowlan_data->target_ipv6_addrs[i]; 1672 addrs[i].config_num = cpu_to_le32(j); 1673 nsc[j].dest_ipv6_addr = solicited_addr; 1674 memcpy(nsc[j].target_mac_addr, vif->addr, ETH_ALEN); 1675 } 1676 1677 if (wowlan_data->num_target_ipv6_addrs - num_skipped) 1678 enabled |= IWL_D3_PROTO_IPV6_VALID; 1679 1680 cmd->num_valid_ipv6_addrs = cpu_to_le32(i - num_skipped); 1681 if (enabled & IWL_D3_PROTO_IPV6_VALID) 1682 enabled |= IWL_D3_PROTO_OFFLOAD_NS; 1683 #endif 1684 1685 if (vif->cfg.arp_addr_cnt) { 1686 enabled |= IWL_D3_PROTO_OFFLOAD_ARP | IWL_D3_PROTO_IPV4_VALID; 1687 cmd->common.host_ipv4_addr = vif->cfg.arp_addr_list[0]; 1688 ether_addr_copy(cmd->common.arp_mac_addr, vif->addr); 1689 } 1690 1691 enabled |= IWL_D3_PROTO_OFFLOAD_BTM; 1692 cmd->common.enabled = cpu_to_le32(enabled); 1693 cmd->sta_id = cpu_to_le32(ap_sta_id); 1694 hcmd.data[0] = cmd; 1695 return iwl_mld_send_cmd(mld, &hcmd); 1696 } 1697 1698 static int 1699 iwl_mld_wowlan_config(struct iwl_mld *mld, struct ieee80211_vif *bss_vif, 1700 struct cfg80211_wowlan *wowlan) 1701 { 1702 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(bss_vif); 1703 struct ieee80211_sta *ap_sta = mld_vif->ap_sta; 1704 struct iwl_wowlan_config_cmd wowlan_config_cmd = { 1705 .offloading_tid = IWL_WOWLAN_OFFLOAD_TID, 1706 }; 1707 u32 sta_id_mask; 1708 int ap_sta_id, ret; 1709 int link_id = iwl_mld_get_primary_link(bss_vif); 1710 struct ieee80211_bss_conf *link_conf; 1711 1712 ret = iwl_mld_block_emlsr_sync(mld, bss_vif, 1713 IWL_MLD_EMLSR_BLOCKED_WOWLAN, link_id); 1714 if (ret) 1715 return ret; 1716 1717 link_conf = link_conf_dereference_protected(bss_vif, link_id); 1718 1719 if (WARN_ON(!ap_sta || !link_conf)) 1720 return -EINVAL; 1721 1722 sta_id_mask = iwl_mld_fw_sta_id_mask(mld, ap_sta); 1723 if (WARN_ON(hweight32(sta_id_mask) != 1)) 1724 return -EINVAL; 1725 1726 ap_sta_id = __ffs(sta_id_mask); 1727 wowlan_config_cmd.sta_id = ap_sta_id; 1728 1729 ret = iwl_mld_ensure_queue(mld, 1730 ap_sta->txq[wowlan_config_cmd.offloading_tid]); 1731 if (ret) 1732 return ret; 1733 1734 iwl_mld_set_wowlan_config_cmd(mld, wowlan, 1735 &wowlan_config_cmd, ap_sta); 1736 ret = iwl_mld_send_cmd_pdu(mld, WOWLAN_CONFIGURATION, 1737 &wowlan_config_cmd); 1738 if (ret) 1739 return ret; 1740 1741 ret = iwl_mld_suspend_send_security_cmds(mld, bss_vif, mld_vif, 1742 ap_sta_id); 1743 if (ret) 1744 return ret; 1745 1746 ret = iwl_mld_send_patterns(mld, wowlan, ap_sta_id); 1747 if (ret) 1748 return ret; 1749 1750 ret = iwl_mld_send_proto_offload(mld, bss_vif, ap_sta_id); 1751 if (ret) 1752 return ret; 1753 1754 iwl_mld_enable_beacon_filter(mld, link_conf, true); 1755 return iwl_mld_update_mac_power(mld, bss_vif, true); 1756 } 1757 1758 int iwl_mld_wowlan_suspend(struct iwl_mld *mld, struct cfg80211_wowlan *wowlan) 1759 { 1760 struct ieee80211_vif *bss_vif; 1761 1762 lockdep_assert_wiphy(mld->wiphy); 1763 1764 if (WARN_ON(!wowlan)) 1765 return 1; 1766 1767 IWL_DEBUG_WOWLAN(mld, "Starting the wowlan suspend flow\n"); 1768 1769 bss_vif = iwl_mld_get_bss_vif(mld); 1770 if (WARN_ON(!bss_vif)) 1771 return 1; 1772 1773 if (!bss_vif->cfg.assoc) { 1774 int ret; 1775 /* If we're not associated, this must be netdetect */ 1776 if (WARN_ON(!wowlan->nd_config)) 1777 return 1; 1778 1779 ret = iwl_mld_netdetect_config(mld, bss_vif, wowlan); 1780 if (!ret) 1781 mld->netdetect = true; 1782 1783 return ret; 1784 } 1785 1786 return iwl_mld_wowlan_config(mld, bss_vif, wowlan); 1787 } 1788 1789 /* Returns 0 on success, 1 if an error occurred in firmware during d3, 1790 * A negative value is expected only in unrecovreable cases. 1791 */ 1792 int iwl_mld_wowlan_resume(struct iwl_mld *mld) 1793 { 1794 struct ieee80211_vif *bss_vif; 1795 struct ieee80211_bss_conf *link_conf; 1796 struct iwl_mld_netdetect_res netdetect_res; 1797 struct iwl_mld_resume_data resume_data = { 1798 .notifs_expected = 1799 IWL_D3_NOTIF_WOWLAN_INFO | 1800 IWL_D3_NOTIF_D3_END_NOTIF, 1801 .netdetect_res = &netdetect_res, 1802 }; 1803 int link_id; 1804 int ret; 1805 bool fw_err = false; 1806 1807 lockdep_assert_wiphy(mld->wiphy); 1808 1809 IWL_DEBUG_WOWLAN(mld, "Starting the wowlan resume flow\n"); 1810 1811 if (!mld->fw_status.in_d3) { 1812 IWL_DEBUG_WOWLAN(mld, 1813 "Device_powered_off() was called during wowlan\n"); 1814 goto err; 1815 } 1816 1817 mld->fw_status.resuming = true; 1818 mld->fw_status.in_d3 = false; 1819 mld->scan.last_start_time_jiffies = jiffies; 1820 1821 bss_vif = iwl_mld_get_bss_vif(mld); 1822 if (WARN_ON(!bss_vif)) 1823 goto err; 1824 1825 /* We can't have several links upon wowlan entry, 1826 * this is enforced in the suspend flow. 1827 */ 1828 WARN_ON(hweight16(bss_vif->active_links) > 1); 1829 link_id = bss_vif->active_links ? __ffs(bss_vif->active_links) : 0; 1830 link_conf = link_conf_dereference_protected(bss_vif, link_id); 1831 1832 if (WARN_ON(!link_conf)) 1833 goto err; 1834 1835 iwl_fw_dbg_read_d3_debug_data(&mld->fwrt); 1836 1837 resume_data.wowlan_status = kzalloc(sizeof(*resume_data.wowlan_status), 1838 GFP_KERNEL); 1839 if (!resume_data.wowlan_status) 1840 return -ENOMEM; 1841 1842 if (mld->netdetect) 1843 resume_data.notifs_expected |= IWL_D3_ND_MATCH_INFO; 1844 1845 ret = iwl_mld_wait_d3_notif(mld, &resume_data, true); 1846 if (ret) { 1847 IWL_ERR(mld, "Couldn't get the d3 notifs %d\n", ret); 1848 fw_err = true; 1849 goto err; 1850 } 1851 1852 if (resume_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE) { 1853 mld->fw_status.in_hw_restart = true; 1854 goto process_wakeup_results; 1855 } 1856 1857 iwl_mld_update_changed_regdomain(mld); 1858 iwl_mld_update_mac_power(mld, bss_vif, false); 1859 iwl_mld_enable_beacon_filter(mld, link_conf, false); 1860 iwl_mld_update_device_power(mld, false); 1861 1862 if (mld->netdetect) 1863 ret = iwl_mld_scan_stop(mld, IWL_MLD_SCAN_NETDETECT, false); 1864 1865 process_wakeup_results: 1866 if (mld->netdetect) { 1867 iwl_mld_process_netdetect_res(mld, bss_vif, &resume_data); 1868 mld->netdetect = false; 1869 } else { 1870 bool keep_connection = 1871 iwl_mld_process_wowlan_status(mld, bss_vif, 1872 resume_data.wowlan_status); 1873 1874 /* EMLSR state will be cleared if the connection is not kept */ 1875 if (keep_connection) 1876 iwl_mld_unblock_emlsr(mld, bss_vif, 1877 IWL_MLD_EMLSR_BLOCKED_WOWLAN); 1878 else 1879 ieee80211_resume_disconnect(bss_vif); 1880 } 1881 1882 goto out; 1883 1884 err: 1885 if (fw_err) { 1886 mld->trans->state = IWL_TRANS_NO_FW; 1887 set_bit(STATUS_FW_ERROR, &mld->trans->status); 1888 } 1889 1890 mld->fw_status.in_hw_restart = true; 1891 ret = 1; 1892 out: 1893 mld->fw_status.resuming = false; 1894 1895 if (resume_data.wowlan_status) { 1896 kfree(resume_data.wowlan_status->wake_packet); 1897 kfree(resume_data.wowlan_status); 1898 } 1899 1900 return ret; 1901 } 1902