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 u8 key[WOWLAN_KEY_MAX_SIZE]; 766 767 BUILD_BUG_ON(WLAN_KEY_LEN_CCMP != WLAN_KEY_LEN_GCMP); 768 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_CCMP); 769 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_GCMP_256); 770 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_TKIP); 771 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_BIP_GMAC_128); 772 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_BIP_GMAC_256); 773 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_AES_CMAC); 774 BUILD_BUG_ON(sizeof(conf.key) < sizeof(key_data->key)); 775 776 if (!key_data->len) 777 return; 778 779 switch (cipher) { 780 case WLAN_CIPHER_SUITE_CCMP: 781 case WLAN_CIPHER_SUITE_GCMP: 782 conf.conf.keylen = WLAN_KEY_LEN_CCMP; 783 break; 784 case WLAN_CIPHER_SUITE_GCMP_256: 785 conf.conf.keylen = WLAN_KEY_LEN_GCMP_256; 786 break; 787 case WLAN_CIPHER_SUITE_TKIP: 788 conf.conf.keylen = WLAN_KEY_LEN_TKIP; 789 break; 790 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 791 conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_128; 792 break; 793 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 794 conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_256; 795 break; 796 case WLAN_CIPHER_SUITE_AES_CMAC: 797 conf.conf.keylen = WLAN_KEY_LEN_AES_CMAC; 798 break; 799 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 800 conf.conf.keylen = WLAN_KEY_LEN_BIP_CMAC_256; 801 break; 802 default: 803 WARN_ON(1); 804 } 805 806 memcpy(conf.conf.key, key_data->key, conf.conf.keylen); 807 808 memcpy(key, key_data->key, sizeof(key_data->key)); 809 810 key_config = ieee80211_gtk_rekey_add(vif, key_data->id, key, 811 sizeof(key), link_id); 812 if (IS_ERR(key_config)) 813 return; 814 815 iwl_mld_set_key_rx_seq(key_config, key_data); 816 817 /* The FW holds only one igtk so we keep track of the valid one */ 818 if (key_config->keyidx == 4 || key_config->keyidx == 5) { 819 struct iwl_mld_link *mld_link = 820 iwl_mld_link_from_mac80211(link_conf); 821 822 /* If we had more than one rekey, mac80211 will tell us to 823 * remove the old and add the new so we will update the IGTK in 824 * drv_set_key 825 */ 826 if (mld_link->igtk && mld_link->igtk != key_config) { 827 /* mark the old IGTK as not in FW */ 828 mld_link->igtk->hw_key_idx = STA_KEY_IDX_INVALID; 829 mld_link->igtk = key_config; 830 } 831 } 832 833 /* Also keep track of the new BIGTK */ 834 if ((key_config->keyidx == 6 || key_config->keyidx == 7) && 835 vif->type == NL80211_IFTYPE_STATION) { 836 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 837 838 rcu_assign_pointer(mld_vif->bigtks[key_config->keyidx - 6], key_config); 839 } 840 } 841 842 static void 843 iwl_mld_add_all_rekeys(struct ieee80211_vif *vif, 844 struct iwl_mld_wowlan_status *wowlan_status, 845 struct iwl_mld_resume_key_iter_data *key_iter_data, 846 struct ieee80211_bss_conf *link_conf) 847 { 848 int i; 849 850 for (i = 0; i < ARRAY_SIZE(wowlan_status->gtk); i++) 851 iwl_mld_add_mcast_rekey(vif, key_iter_data->mld, 852 &wowlan_status->gtk[i], 853 link_conf, 854 key_iter_data->gtk_cipher); 855 856 iwl_mld_add_mcast_rekey(vif, key_iter_data->mld, 857 &wowlan_status->igtk, 858 link_conf, key_iter_data->igtk_cipher); 859 860 for (i = 0; i < ARRAY_SIZE(wowlan_status->bigtk); i++) 861 iwl_mld_add_mcast_rekey(vif, key_iter_data->mld, 862 &wowlan_status->bigtk[i], 863 link_conf, 864 key_iter_data->bigtk_cipher); 865 } 866 867 static bool 868 iwl_mld_update_sec_keys(struct iwl_mld *mld, 869 struct ieee80211_vif *vif, 870 struct iwl_mld_wowlan_status *wowlan_status) 871 { 872 int link_id = vif->active_links ? __ffs(vif->active_links) : 0; 873 struct ieee80211_bss_conf *link_conf = 874 link_conf_dereference_protected(vif, link_id); 875 __be64 replay_ctr = cpu_to_be64(wowlan_status->replay_ctr); 876 struct iwl_mld_resume_key_iter_data key_iter_data = { 877 .mld = mld, 878 .wowlan_status = wowlan_status, 879 }; 880 881 if (WARN_ON(!link_conf)) 882 return false; 883 884 ieee80211_iter_keys(mld->hw, vif, iwl_mld_resume_keys_iter, 885 &key_iter_data); 886 887 if (key_iter_data.unhandled_cipher) 888 return false; 889 890 IWL_DEBUG_WOWLAN(mld, 891 "Number of installed keys: %d, Number of rekeys: %d\n", 892 key_iter_data.num_keys, 893 wowlan_status->num_of_gtk_rekeys); 894 895 if (!key_iter_data.num_keys || !wowlan_status->num_of_gtk_rekeys) 896 return true; 897 898 iwl_mld_add_all_rekeys(vif, wowlan_status, &key_iter_data, 899 link_conf); 900 901 ieee80211_gtk_rekey_notify(vif, link_conf->bssid, 902 (void *)&replay_ctr, GFP_KERNEL); 903 /* TODO: MLO rekey (task=MLO) */ 904 return true; 905 } 906 907 static bool 908 iwl_mld_process_wowlan_status(struct iwl_mld *mld, 909 struct ieee80211_vif *vif, 910 struct iwl_mld_wowlan_status *wowlan_status) 911 { 912 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 913 struct ieee80211_sta *ap_sta = mld_vif->ap_sta; 914 struct iwl_mld_txq *mld_txq; 915 916 iwl_mld_report_wowlan_wakeup(mld, vif, wowlan_status); 917 918 if (WARN_ON(!ap_sta)) 919 return false; 920 921 mld_txq = 922 iwl_mld_txq_from_mac80211(ap_sta->txq[wowlan_status->tid_offloaded_tx]); 923 924 /* Update the pointers of the Tx queue that may have moved during 925 * suspend if the firmware sent frames. 926 * The firmware stores last-used value, we store next value. 927 */ 928 WARN_ON(!mld_txq->status.allocated); 929 iwl_trans_set_q_ptrs(mld->trans, mld_txq->fw_id, 930 (wowlan_status->last_qos_seq + 931 0x10) >> 4); 932 933 if (!iwl_mld_update_sec_keys(mld, vif, wowlan_status)) 934 return false; 935 936 if (wowlan_status->wakeup_reasons & 937 (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 938 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH | 939 IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)) 940 return false; 941 942 return true; 943 } 944 945 static bool 946 iwl_mld_netdetect_match_info_handler(struct iwl_mld *mld, 947 struct iwl_mld_resume_data *resume_data, 948 struct iwl_rx_packet *pkt) 949 { 950 struct iwl_mld_netdetect_res *results = resume_data->netdetect_res; 951 const struct iwl_scan_offload_match_info *notif = (void *)pkt->data; 952 u32 len = iwl_rx_packet_payload_len(pkt); 953 954 if (IWL_FW_CHECK(mld, !mld->netdetect, 955 "Got scan match info notif when mld->netdetect==%d\n", 956 mld->netdetect)) 957 return true; 958 959 if (IWL_FW_CHECK(mld, len < sizeof(*notif), 960 "Invalid scan offload match notif of length: %d\n", 961 len)) 962 return true; 963 964 if (IWL_FW_CHECK(mld, resume_data->wowlan_status->wakeup_reasons != 965 IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS, 966 "Ignore scan match info: unexpected wakeup reason (expected=0x%x got=0x%x)\n", 967 IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS, 968 resume_data->wowlan_status->wakeup_reasons)) 969 return true; 970 971 results->matched_profiles = le32_to_cpu(notif->matched_profiles); 972 IWL_DEBUG_WOWLAN(mld, "number of matched profiles=%u\n", 973 results->matched_profiles); 974 975 if (results->matched_profiles) 976 memcpy(results->matches, notif->matches, 977 NETDETECT_QUERY_BUF_LEN); 978 979 /* No scan should be active at this point */ 980 mld->scan.status = 0; 981 memset(mld->scan.uid_status, 0, sizeof(mld->scan.uid_status)); 982 return false; 983 } 984 985 static void 986 iwl_mld_set_netdetect_info(struct iwl_mld *mld, 987 const struct cfg80211_sched_scan_request *netdetect_cfg, 988 struct cfg80211_wowlan_nd_info *netdetect_info, 989 struct iwl_mld_netdetect_res *netdetect_res, 990 unsigned long matched_profiles) 991 { 992 int i; 993 994 for_each_set_bit(i, &matched_profiles, netdetect_cfg->n_match_sets) { 995 struct cfg80211_wowlan_nd_match *match; 996 int idx, j, n_channels = 0; 997 struct iwl_scan_offload_profile_match *matches = 998 (void *)netdetect_res->matches; 999 1000 for (int k = 0; k < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; k++) 1001 n_channels += 1002 hweight8(matches[i].matching_channels[k]); 1003 match = kzalloc(struct_size(match, channels, n_channels), 1004 GFP_KERNEL); 1005 if (!match) 1006 return; 1007 1008 netdetect_info->matches[netdetect_info->n_matches] = match; 1009 netdetect_info->n_matches++; 1010 1011 /* We inverted the order of the SSIDs in the scan 1012 * request, so invert the index here. 1013 */ 1014 idx = netdetect_cfg->n_match_sets - i - 1; 1015 match->ssid.ssid_len = 1016 netdetect_cfg->match_sets[idx].ssid.ssid_len; 1017 memcpy(match->ssid.ssid, 1018 netdetect_cfg->match_sets[idx].ssid.ssid, 1019 match->ssid.ssid_len); 1020 1021 if (netdetect_cfg->n_channels < n_channels) 1022 continue; 1023 1024 for_each_set_bit(j, 1025 (unsigned long *)&matches[i].matching_channels[0], 1026 sizeof(matches[i].matching_channels)) { 1027 match->channels[match->n_channels] = 1028 netdetect_cfg->channels[j]->center_freq; 1029 match->n_channels++; 1030 } 1031 } 1032 } 1033 1034 static void 1035 iwl_mld_process_netdetect_res(struct iwl_mld *mld, 1036 struct ieee80211_vif *vif, 1037 struct iwl_mld_resume_data *resume_data) 1038 { 1039 struct cfg80211_wowlan_nd_info *netdetect_info = NULL; 1040 const struct cfg80211_sched_scan_request *netdetect_cfg; 1041 struct cfg80211_wowlan_wakeup wakeup = { 1042 .pattern_idx = -1, 1043 }; 1044 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; 1045 unsigned long matched_profiles; 1046 u32 wakeup_reasons; 1047 int n_matches; 1048 1049 lockdep_assert_wiphy(mld->wiphy); 1050 1051 if (WARN_ON(!mld->wiphy->wowlan_config || 1052 !mld->wiphy->wowlan_config->nd_config)) { 1053 IWL_DEBUG_WOWLAN(mld, 1054 "Netdetect isn't configured on resume flow\n"); 1055 goto out; 1056 } 1057 1058 netdetect_cfg = mld->wiphy->wowlan_config->nd_config; 1059 wakeup_reasons = resume_data->wowlan_status->wakeup_reasons; 1060 1061 if (wakeup_reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 1062 wakeup.rfkill_release = true; 1063 1064 if (wakeup_reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) 1065 goto out; 1066 1067 if (!resume_data->netdetect_res->matched_profiles) { 1068 IWL_DEBUG_WOWLAN(mld, 1069 "Netdetect results aren't valid\n"); 1070 wakeup_report = NULL; 1071 goto out; 1072 } 1073 1074 matched_profiles = resume_data->netdetect_res->matched_profiles; 1075 if (!netdetect_cfg->n_match_sets) { 1076 IWL_DEBUG_WOWLAN(mld, 1077 "No netdetect match sets are configured\n"); 1078 goto out; 1079 } 1080 n_matches = hweight_long(matched_profiles); 1081 netdetect_info = kzalloc(struct_size(netdetect_info, matches, 1082 n_matches), GFP_KERNEL); 1083 if (netdetect_info) 1084 iwl_mld_set_netdetect_info(mld, netdetect_cfg, netdetect_info, 1085 resume_data->netdetect_res, 1086 matched_profiles); 1087 1088 wakeup.net_detect = netdetect_info; 1089 out: 1090 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); 1091 if (netdetect_info) { 1092 for (int i = 0; i < netdetect_info->n_matches; i++) 1093 kfree(netdetect_info->matches[i]); 1094 kfree(netdetect_info); 1095 } 1096 } 1097 1098 static bool iwl_mld_handle_d3_notif(struct iwl_notif_wait_data *notif_wait, 1099 struct iwl_rx_packet *pkt, void *data) 1100 { 1101 struct iwl_mld_resume_data *resume_data = data; 1102 struct iwl_mld *mld = 1103 container_of(notif_wait, struct iwl_mld, notif_wait); 1104 1105 switch (WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) { 1106 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION): { 1107 if (resume_data->notifs_received & IWL_D3_NOTIF_WOWLAN_INFO) { 1108 IWL_DEBUG_WOWLAN(mld, 1109 "got additional wowlan_info notif\n"); 1110 break; 1111 } 1112 resume_data->notif_handling_err = 1113 iwl_mld_handle_wowlan_info_notif(mld, 1114 resume_data->wowlan_status, 1115 pkt); 1116 resume_data->notifs_received |= IWL_D3_NOTIF_WOWLAN_INFO; 1117 1118 if (resume_data->wowlan_status->wakeup_reasons & 1119 IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT) 1120 resume_data->notifs_expected |= 1121 IWL_D3_NOTIF_WOWLAN_WAKE_PKT; 1122 break; 1123 } 1124 case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION): { 1125 if (resume_data->notifs_received & 1126 IWL_D3_NOTIF_WOWLAN_WAKE_PKT) { 1127 /* We shouldn't get two wake packet notifications */ 1128 IWL_DEBUG_WOWLAN(mld, 1129 "Got additional wowlan wake packet notification\n"); 1130 break; 1131 } 1132 resume_data->notif_handling_err = 1133 iwl_mld_handle_wake_pkt_notif(mld, 1134 resume_data->wowlan_status, 1135 pkt); 1136 resume_data->notifs_received |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT; 1137 break; 1138 } 1139 case WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF): { 1140 if (resume_data->notifs_received & IWL_D3_ND_MATCH_INFO) { 1141 IWL_ERR(mld, 1142 "Got additional netdetect match info\n"); 1143 break; 1144 } 1145 1146 resume_data->notif_handling_err = 1147 iwl_mld_netdetect_match_info_handler(mld, resume_data, 1148 pkt); 1149 resume_data->notifs_received |= IWL_D3_ND_MATCH_INFO; 1150 break; 1151 } 1152 case WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION): { 1153 struct iwl_d3_end_notif *notif = (void *)pkt->data; 1154 1155 resume_data->d3_end_flags = le32_to_cpu(notif->flags); 1156 resume_data->notifs_received |= IWL_D3_NOTIF_D3_END_NOTIF; 1157 break; 1158 } 1159 default: 1160 WARN_ON(1); 1161 } 1162 1163 return resume_data->notifs_received == resume_data->notifs_expected; 1164 } 1165 1166 #define IWL_MLD_D3_NOTIF_TIMEOUT (HZ / 3) 1167 1168 static int iwl_mld_wait_d3_notif(struct iwl_mld *mld, 1169 struct iwl_mld_resume_data *resume_data, 1170 bool with_wowlan) 1171 { 1172 static const u16 wowlan_resume_notif[] = { 1173 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION), 1174 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION), 1175 WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF), 1176 WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION) 1177 }; 1178 static const u16 d3_resume_notif[] = { 1179 WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION) 1180 }; 1181 struct iwl_notification_wait wait_d3_notif; 1182 enum iwl_d3_status d3_status; 1183 int ret; 1184 1185 if (with_wowlan) 1186 iwl_init_notification_wait(&mld->notif_wait, &wait_d3_notif, 1187 wowlan_resume_notif, 1188 ARRAY_SIZE(wowlan_resume_notif), 1189 iwl_mld_handle_d3_notif, 1190 resume_data); 1191 else 1192 iwl_init_notification_wait(&mld->notif_wait, &wait_d3_notif, 1193 d3_resume_notif, 1194 ARRAY_SIZE(d3_resume_notif), 1195 iwl_mld_handle_d3_notif, 1196 resume_data); 1197 1198 ret = iwl_trans_d3_resume(mld->trans, &d3_status, false, false); 1199 if (ret || d3_status != IWL_D3_STATUS_ALIVE) { 1200 if (d3_status != IWL_D3_STATUS_ALIVE) { 1201 IWL_INFO(mld, "Device was reset during suspend\n"); 1202 ret = -ENOENT; 1203 } else { 1204 IWL_ERR(mld, "Transport resume failed\n"); 1205 } 1206 iwl_remove_notification(&mld->notif_wait, &wait_d3_notif); 1207 return ret; 1208 } 1209 1210 ret = iwl_wait_notification(&mld->notif_wait, &wait_d3_notif, 1211 IWL_MLD_D3_NOTIF_TIMEOUT); 1212 if (ret) 1213 IWL_ERR(mld, "Couldn't get the d3 notif %d\n", ret); 1214 1215 if (resume_data->notif_handling_err) 1216 ret = -EIO; 1217 1218 return ret; 1219 } 1220 1221 int iwl_mld_no_wowlan_suspend(struct iwl_mld *mld) 1222 { 1223 struct iwl_d3_manager_config d3_cfg_cmd_data = {}; 1224 int ret; 1225 1226 if (mld->debug_max_sleep) { 1227 d3_cfg_cmd_data.wakeup_host_timer = 1228 cpu_to_le32(mld->debug_max_sleep); 1229 d3_cfg_cmd_data.wakeup_flags = 1230 cpu_to_le32(IWL_WAKEUP_D3_HOST_TIMER); 1231 } 1232 1233 lockdep_assert_wiphy(mld->wiphy); 1234 1235 IWL_DEBUG_WOWLAN(mld, "Starting the no wowlan suspend flow\n"); 1236 1237 iwl_mld_low_latency_stop(mld); 1238 1239 /* This will happen if iwl_mld_supsend failed with FW error */ 1240 if (mld->trans->state == IWL_TRANS_NO_FW && 1241 test_bit(STATUS_FW_ERROR, &mld->trans->status)) 1242 return -ENODEV; 1243 1244 ret = iwl_mld_update_device_power(mld, true); 1245 if (ret) { 1246 IWL_ERR(mld, 1247 "d3 suspend: couldn't send power_device %d\n", ret); 1248 goto out; 1249 } 1250 1251 ret = iwl_mld_send_cmd_pdu(mld, D3_CONFIG_CMD, 1252 &d3_cfg_cmd_data); 1253 if (ret) { 1254 IWL_ERR(mld, 1255 "d3 suspend: couldn't send D3_CONFIG_CMD %d\n", ret); 1256 goto out; 1257 } 1258 1259 ret = iwl_trans_d3_suspend(mld->trans, false, false); 1260 if (ret) { 1261 IWL_ERR(mld, "d3 suspend: trans_d3_suspend failed %d\n", ret); 1262 } else { 1263 /* Async notification might send hcmds, which is not allowed in suspend */ 1264 iwl_mld_cancel_async_notifications(mld); 1265 mld->fw_status.in_d3 = true; 1266 } 1267 1268 out: 1269 if (ret) { 1270 mld->trans->state = IWL_TRANS_NO_FW; 1271 set_bit(STATUS_FW_ERROR, &mld->trans->status); 1272 } 1273 1274 return ret; 1275 } 1276 1277 int iwl_mld_no_wowlan_resume(struct iwl_mld *mld) 1278 { 1279 struct iwl_mld_resume_data resume_data = { 1280 .notifs_expected = 1281 IWL_D3_NOTIF_D3_END_NOTIF, 1282 }; 1283 int ret; 1284 1285 lockdep_assert_wiphy(mld->wiphy); 1286 1287 IWL_DEBUG_WOWLAN(mld, "Starting the no wowlan resume flow\n"); 1288 1289 mld->fw_status.in_d3 = false; 1290 iwl_fw_dbg_read_d3_debug_data(&mld->fwrt); 1291 1292 ret = iwl_mld_wait_d3_notif(mld, &resume_data, false); 1293 1294 if (!ret && (resume_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)) 1295 return -ENODEV; 1296 1297 if (ret) { 1298 mld->trans->state = IWL_TRANS_NO_FW; 1299 set_bit(STATUS_FW_ERROR, &mld->trans->status); 1300 return ret; 1301 } 1302 iwl_mld_low_latency_restart(mld); 1303 1304 return iwl_mld_update_device_power(mld, false); 1305 } 1306 1307 static void 1308 iwl_mld_aes_seq_to_le64_pn(struct ieee80211_key_conf *key, 1309 __le64 *key_rsc) 1310 { 1311 for (int i = 0; i < IWL_MAX_TID_COUNT; i++) { 1312 struct ieee80211_key_seq seq; 1313 u8 *pn = key->cipher == WLAN_CIPHER_SUITE_CCMP ? seq.ccmp.pn : 1314 seq.gcmp.pn; 1315 1316 ieee80211_get_key_rx_seq(key, i, &seq); 1317 key_rsc[i] = cpu_to_le64((u64)pn[5] | 1318 ((u64)pn[4] << 8) | 1319 ((u64)pn[3] << 16) | 1320 ((u64)pn[2] << 24) | 1321 ((u64)pn[1] << 32) | 1322 ((u64)pn[0] << 40)); 1323 } 1324 } 1325 1326 static void 1327 iwl_mld_suspend_set_ucast_pn(struct iwl_mld *mld, struct ieee80211_sta *sta, 1328 struct ieee80211_key_conf *key, __le64 *key_rsc) 1329 { 1330 struct iwl_mld_sta *mld_sta = 1331 iwl_mld_sta_from_mac80211(sta); 1332 struct iwl_mld_ptk_pn *mld_ptk_pn; 1333 1334 if (WARN_ON(key->keyidx >= ARRAY_SIZE(mld_sta->ptk_pn))) 1335 return; 1336 1337 mld_ptk_pn = wiphy_dereference(mld->wiphy, 1338 mld_sta->ptk_pn[key->keyidx]); 1339 if (WARN_ON(!mld_ptk_pn)) 1340 return; 1341 1342 for (int tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1343 struct ieee80211_key_seq seq; 1344 u8 *max_pn = seq.ccmp.pn; 1345 1346 /* get the PN from mac80211, used on the default queue */ 1347 ieee80211_get_key_rx_seq(key, tid, &seq); 1348 1349 /* and use the internal data for all queues */ 1350 for (int que = 1; que < mld->trans->info.num_rxqs; que++) { 1351 u8 *cur_pn = mld_ptk_pn->q[que].pn[tid]; 1352 1353 if (memcmp(max_pn, cur_pn, IEEE80211_CCMP_PN_LEN) < 0) 1354 max_pn = cur_pn; 1355 } 1356 key_rsc[tid] = cpu_to_le64((u64)max_pn[5] | 1357 ((u64)max_pn[4] << 8) | 1358 ((u64)max_pn[3] << 16) | 1359 ((u64)max_pn[2] << 24) | 1360 ((u64)max_pn[1] << 32) | 1361 ((u64)max_pn[0] << 40)); 1362 } 1363 } 1364 1365 static void 1366 iwl_mld_suspend_convert_tkip_ipn(struct ieee80211_key_conf *key, 1367 __le64 *rsc) 1368 { 1369 struct ieee80211_key_seq seq; 1370 1371 for (int i = 0; i < IWL_MAX_TID_COUNT; i++) { 1372 ieee80211_get_key_rx_seq(key, i, &seq); 1373 rsc[i] = 1374 cpu_to_le64(((u64)seq.tkip.iv32 << 16) | 1375 seq.tkip.iv16); 1376 } 1377 } 1378 1379 static void 1380 iwl_mld_suspend_key_data_iter(struct ieee80211_hw *hw, 1381 struct ieee80211_vif *vif, 1382 struct ieee80211_sta *sta, 1383 struct ieee80211_key_conf *key, 1384 void *_data) 1385 { 1386 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1387 struct iwl_mld_suspend_key_iter_data *data = _data; 1388 __le64 *key_rsc; 1389 __le32 cipher = 0; 1390 1391 switch (key->cipher) { 1392 case WLAN_CIPHER_SUITE_CCMP: 1393 cipher = cpu_to_le32(STA_KEY_FLG_CCM); 1394 fallthrough; 1395 case WLAN_CIPHER_SUITE_GCMP: 1396 case WLAN_CIPHER_SUITE_GCMP_256: 1397 if (!cipher) 1398 cipher = cpu_to_le32(STA_KEY_FLG_GCMP); 1399 fallthrough; 1400 case WLAN_CIPHER_SUITE_TKIP: 1401 if (!cipher) 1402 cipher = cpu_to_le32(STA_KEY_FLG_TKIP); 1403 if (sta) { 1404 key_rsc = data->rsc->ucast_rsc; 1405 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) 1406 iwl_mld_suspend_convert_tkip_ipn(key, key_rsc); 1407 else 1408 iwl_mld_suspend_set_ucast_pn(mld, sta, key, 1409 key_rsc); 1410 1411 data->have_rsc = true; 1412 return; 1413 } 1414 /* We're iterating from old to new, there're 4 possible 1415 * gtk ids, and only the last two keys matter 1416 */ 1417 if (WARN_ON(data->gtks >= 1418 ARRAY_SIZE(data->found_gtk_idx))) 1419 return; 1420 1421 if (WARN_ON(key->keyidx >= 1422 ARRAY_SIZE(data->rsc->mcast_key_id_map))) 1423 return; 1424 data->gtk_cipher = cipher; 1425 data->found_gtk_idx[data->gtks] = key->keyidx; 1426 key_rsc = data->rsc->mcast_rsc[data->gtks % 2]; 1427 data->rsc->mcast_key_id_map[key->keyidx] = 1428 data->gtks % 2; 1429 1430 if (data->gtks >= 2) { 1431 int prev = data->gtks % 2; 1432 int prev_idx = data->found_gtk_idx[prev]; 1433 1434 data->rsc->mcast_key_id_map[prev_idx] = 1435 IWL_MCAST_KEY_MAP_INVALID; 1436 } 1437 1438 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) 1439 iwl_mld_suspend_convert_tkip_ipn(key, key_rsc); 1440 else 1441 iwl_mld_aes_seq_to_le64_pn(key, key_rsc); 1442 1443 data->gtks++; 1444 data->have_rsc = true; 1445 break; 1446 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 1447 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 1448 cipher = cpu_to_le32(STA_KEY_FLG_GCMP); 1449 fallthrough; 1450 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 1451 case WLAN_CIPHER_SUITE_AES_CMAC: 1452 if (!cipher) 1453 cipher = cpu_to_le32(STA_KEY_FLG_CCM); 1454 if (key->keyidx == 4 || key->keyidx == 5) 1455 data->igtk_cipher = cipher; 1456 1457 if (key->keyidx == 6 || key->keyidx == 7) 1458 data->bigtk_cipher = cipher; 1459 1460 break; 1461 } 1462 } 1463 1464 static int 1465 iwl_mld_send_kek_kck_cmd(struct iwl_mld *mld, 1466 struct iwl_mld_vif *mld_vif, 1467 struct iwl_mld_suspend_key_iter_data data, 1468 int ap_sta_id) 1469 { 1470 struct iwl_wowlan_kek_kck_material_cmd_v4 kek_kck_cmd = {}; 1471 struct iwl_mld_rekey_data *rekey_data = 1472 &mld_vif->wowlan_data.rekey_data; 1473 1474 memcpy(kek_kck_cmd.kck, rekey_data->kck, 1475 rekey_data->kck_len); 1476 kek_kck_cmd.kck_len = cpu_to_le16(rekey_data->kck_len); 1477 memcpy(kek_kck_cmd.kek, rekey_data->kek, 1478 rekey_data->kek_len); 1479 kek_kck_cmd.kek_len = cpu_to_le16(rekey_data->kek_len); 1480 kek_kck_cmd.replay_ctr = rekey_data->replay_ctr; 1481 kek_kck_cmd.akm = cpu_to_le32(rekey_data->akm); 1482 kek_kck_cmd.sta_id = cpu_to_le32(ap_sta_id); 1483 kek_kck_cmd.gtk_cipher = data.gtk_cipher; 1484 kek_kck_cmd.igtk_cipher = data.igtk_cipher; 1485 kek_kck_cmd.bigtk_cipher = data.bigtk_cipher; 1486 1487 IWL_DEBUG_WOWLAN(mld, "setting akm %d\n", 1488 rekey_data->akm); 1489 1490 return iwl_mld_send_cmd_pdu(mld, WOWLAN_KEK_KCK_MATERIAL, 1491 &kek_kck_cmd); 1492 } 1493 1494 static int 1495 iwl_mld_suspend_send_security_cmds(struct iwl_mld *mld, 1496 struct ieee80211_vif *vif, 1497 struct iwl_mld_vif *mld_vif, 1498 int ap_sta_id) 1499 { 1500 struct iwl_mld_suspend_key_iter_data data = {}; 1501 int ret; 1502 1503 data.rsc = kzalloc(sizeof(*data.rsc), GFP_KERNEL); 1504 if (!data.rsc) 1505 return -ENOMEM; 1506 1507 memset(data.rsc->mcast_key_id_map, IWL_MCAST_KEY_MAP_INVALID, 1508 ARRAY_SIZE(data.rsc->mcast_key_id_map)); 1509 1510 data.rsc->sta_id = cpu_to_le32(ap_sta_id); 1511 ieee80211_iter_keys(mld->hw, vif, 1512 iwl_mld_suspend_key_data_iter, 1513 &data); 1514 1515 if (data.have_rsc) 1516 ret = iwl_mld_send_cmd_pdu(mld, WOWLAN_TSC_RSC_PARAM, 1517 data.rsc); 1518 else 1519 ret = 0; 1520 1521 if (!ret && mld_vif->wowlan_data.rekey_data.valid) 1522 ret = iwl_mld_send_kek_kck_cmd(mld, mld_vif, data, ap_sta_id); 1523 1524 kfree(data.rsc); 1525 1526 return ret; 1527 } 1528 1529 static void 1530 iwl_mld_set_wowlan_config_cmd(struct iwl_mld *mld, 1531 struct cfg80211_wowlan *wowlan, 1532 struct iwl_wowlan_config_cmd *wowlan_config_cmd, 1533 struct ieee80211_sta *ap_sta) 1534 { 1535 wowlan_config_cmd->is_11n_connection = 1536 ap_sta->deflink.ht_cap.ht_supported; 1537 wowlan_config_cmd->flags = ENABLE_L3_FILTERING | 1538 ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING; 1539 1540 if (ap_sta->mfp) 1541 wowlan_config_cmd->flags |= IS_11W_ASSOC; 1542 1543 if (wowlan->disconnect) 1544 wowlan_config_cmd->wakeup_filter |= 1545 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS | 1546 IWL_WOWLAN_WAKEUP_LINK_CHANGE); 1547 if (wowlan->magic_pkt) 1548 wowlan_config_cmd->wakeup_filter |= 1549 cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET); 1550 if (wowlan->gtk_rekey_failure) 1551 wowlan_config_cmd->wakeup_filter |= 1552 cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL); 1553 if (wowlan->eap_identity_req) 1554 wowlan_config_cmd->wakeup_filter |= 1555 cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ); 1556 if (wowlan->four_way_handshake) 1557 wowlan_config_cmd->wakeup_filter |= 1558 cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE); 1559 if (wowlan->n_patterns) 1560 wowlan_config_cmd->wakeup_filter |= 1561 cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH); 1562 1563 if (wowlan->rfkill_release) 1564 wowlan_config_cmd->wakeup_filter |= 1565 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT); 1566 1567 if (wowlan->any) { 1568 wowlan_config_cmd->wakeup_filter |= 1569 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS | 1570 IWL_WOWLAN_WAKEUP_LINK_CHANGE | 1571 IWL_WOWLAN_WAKEUP_RX_FRAME | 1572 IWL_WOWLAN_WAKEUP_BCN_FILTERING); 1573 } 1574 } 1575 1576 static int iwl_mld_send_patterns(struct iwl_mld *mld, 1577 struct cfg80211_wowlan *wowlan, 1578 int ap_sta_id) 1579 { 1580 struct iwl_wowlan_patterns_cmd *pattern_cmd; 1581 struct iwl_host_cmd cmd = { 1582 .id = WOWLAN_PATTERNS, 1583 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 1584 }; 1585 int ret; 1586 1587 if (!wowlan->n_patterns) 1588 return 0; 1589 1590 cmd.len[0] = struct_size(pattern_cmd, patterns, wowlan->n_patterns); 1591 1592 pattern_cmd = kzalloc(cmd.len[0], GFP_KERNEL); 1593 if (!pattern_cmd) 1594 return -ENOMEM; 1595 1596 pattern_cmd->n_patterns = wowlan->n_patterns; 1597 pattern_cmd->sta_id = ap_sta_id; 1598 1599 for (int i = 0; i < wowlan->n_patterns; i++) { 1600 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8); 1601 1602 pattern_cmd->patterns[i].pattern_type = 1603 WOWLAN_PATTERN_TYPE_BITMASK; 1604 1605 memcpy(&pattern_cmd->patterns[i].u.bitmask.mask, 1606 wowlan->patterns[i].mask, mask_len); 1607 memcpy(&pattern_cmd->patterns[i].u.bitmask.pattern, 1608 wowlan->patterns[i].pattern, 1609 wowlan->patterns[i].pattern_len); 1610 pattern_cmd->patterns[i].u.bitmask.mask_size = mask_len; 1611 pattern_cmd->patterns[i].u.bitmask.pattern_size = 1612 wowlan->patterns[i].pattern_len; 1613 } 1614 1615 cmd.data[0] = pattern_cmd; 1616 ret = iwl_mld_send_cmd(mld, &cmd); 1617 kfree(pattern_cmd); 1618 return ret; 1619 } 1620 1621 static int 1622 iwl_mld_send_proto_offload(struct iwl_mld *mld, 1623 struct ieee80211_vif *vif, 1624 u8 ap_sta_id) 1625 { 1626 struct iwl_proto_offload_cmd_v4 *cmd __free(kfree); 1627 struct iwl_host_cmd hcmd = { 1628 .id = PROT_OFFLOAD_CONFIG_CMD, 1629 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 1630 .len[0] = sizeof(*cmd), 1631 }; 1632 u32 enabled = 0; 1633 1634 cmd = kzalloc(hcmd.len[0], GFP_KERNEL); 1635 1636 #if IS_ENABLED(CONFIG_IPV6) 1637 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 1638 struct iwl_mld_wowlan_data *wowlan_data = &mld_vif->wowlan_data; 1639 struct iwl_ns_config *nsc; 1640 struct iwl_targ_addr *addrs; 1641 int n_nsc, n_addrs; 1642 int i, c; 1643 int num_skipped = 0; 1644 1645 nsc = cmd->ns_config; 1646 n_nsc = IWL_PROTO_OFFLOAD_NUM_NS_CONFIG_V3L; 1647 addrs = cmd->targ_addrs; 1648 n_addrs = IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V3L; 1649 1650 /* For each address we have (and that will fit) fill a target 1651 * address struct and combine for NS offload structs with the 1652 * solicited node addresses. 1653 */ 1654 for (i = 0, c = 0; 1655 i < wowlan_data->num_target_ipv6_addrs && 1656 i < n_addrs && c < n_nsc; i++) { 1657 int j; 1658 struct in6_addr solicited_addr; 1659 1660 /* Because ns is offloaded skip tentative address to avoid 1661 * violating RFC4862. 1662 */ 1663 if (test_bit(i, wowlan_data->tentative_addrs)) { 1664 num_skipped++; 1665 continue; 1666 } 1667 1668 addrconf_addr_solict_mult(&wowlan_data->target_ipv6_addrs[i], 1669 &solicited_addr); 1670 for (j = 0; j < n_nsc && j < c; j++) 1671 if (ipv6_addr_cmp(&nsc[j].dest_ipv6_addr, 1672 &solicited_addr) == 0) 1673 break; 1674 if (j == c) 1675 c++; 1676 addrs[i].addr = wowlan_data->target_ipv6_addrs[i]; 1677 addrs[i].config_num = cpu_to_le32(j); 1678 nsc[j].dest_ipv6_addr = solicited_addr; 1679 memcpy(nsc[j].target_mac_addr, vif->addr, ETH_ALEN); 1680 } 1681 1682 if (wowlan_data->num_target_ipv6_addrs - num_skipped) 1683 enabled |= IWL_D3_PROTO_IPV6_VALID; 1684 1685 cmd->num_valid_ipv6_addrs = cpu_to_le32(i - num_skipped); 1686 if (enabled & IWL_D3_PROTO_IPV6_VALID) 1687 enabled |= IWL_D3_PROTO_OFFLOAD_NS; 1688 #endif 1689 1690 if (vif->cfg.arp_addr_cnt) { 1691 enabled |= IWL_D3_PROTO_OFFLOAD_ARP | IWL_D3_PROTO_IPV4_VALID; 1692 cmd->common.host_ipv4_addr = vif->cfg.arp_addr_list[0]; 1693 ether_addr_copy(cmd->common.arp_mac_addr, vif->addr); 1694 } 1695 1696 enabled |= IWL_D3_PROTO_OFFLOAD_BTM; 1697 cmd->common.enabled = cpu_to_le32(enabled); 1698 cmd->sta_id = cpu_to_le32(ap_sta_id); 1699 hcmd.data[0] = cmd; 1700 return iwl_mld_send_cmd(mld, &hcmd); 1701 } 1702 1703 static int 1704 iwl_mld_wowlan_config(struct iwl_mld *mld, struct ieee80211_vif *bss_vif, 1705 struct cfg80211_wowlan *wowlan) 1706 { 1707 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(bss_vif); 1708 struct ieee80211_sta *ap_sta = mld_vif->ap_sta; 1709 struct iwl_wowlan_config_cmd wowlan_config_cmd = { 1710 .offloading_tid = IWL_WOWLAN_OFFLOAD_TID, 1711 }; 1712 u32 sta_id_mask; 1713 int ap_sta_id, ret; 1714 int link_id = iwl_mld_get_primary_link(bss_vif); 1715 struct ieee80211_bss_conf *link_conf; 1716 1717 ret = iwl_mld_block_emlsr_sync(mld, bss_vif, 1718 IWL_MLD_EMLSR_BLOCKED_WOWLAN, link_id); 1719 if (ret) 1720 return ret; 1721 1722 link_conf = link_conf_dereference_protected(bss_vif, link_id); 1723 1724 if (WARN_ON(!ap_sta || !link_conf)) 1725 return -EINVAL; 1726 1727 sta_id_mask = iwl_mld_fw_sta_id_mask(mld, ap_sta); 1728 if (WARN_ON(hweight32(sta_id_mask) != 1)) 1729 return -EINVAL; 1730 1731 ap_sta_id = __ffs(sta_id_mask); 1732 wowlan_config_cmd.sta_id = ap_sta_id; 1733 1734 ret = iwl_mld_ensure_queue(mld, 1735 ap_sta->txq[wowlan_config_cmd.offloading_tid]); 1736 if (ret) 1737 return ret; 1738 1739 iwl_mld_set_wowlan_config_cmd(mld, wowlan, 1740 &wowlan_config_cmd, ap_sta); 1741 ret = iwl_mld_send_cmd_pdu(mld, WOWLAN_CONFIGURATION, 1742 &wowlan_config_cmd); 1743 if (ret) 1744 return ret; 1745 1746 ret = iwl_mld_suspend_send_security_cmds(mld, bss_vif, mld_vif, 1747 ap_sta_id); 1748 if (ret) 1749 return ret; 1750 1751 ret = iwl_mld_send_patterns(mld, wowlan, ap_sta_id); 1752 if (ret) 1753 return ret; 1754 1755 ret = iwl_mld_send_proto_offload(mld, bss_vif, ap_sta_id); 1756 if (ret) 1757 return ret; 1758 1759 iwl_mld_enable_beacon_filter(mld, link_conf, true); 1760 return iwl_mld_update_mac_power(mld, bss_vif, true); 1761 } 1762 1763 int iwl_mld_wowlan_suspend(struct iwl_mld *mld, struct cfg80211_wowlan *wowlan) 1764 { 1765 struct ieee80211_vif *bss_vif; 1766 1767 lockdep_assert_wiphy(mld->wiphy); 1768 1769 if (WARN_ON(!wowlan)) 1770 return 1; 1771 1772 IWL_DEBUG_WOWLAN(mld, "Starting the wowlan suspend flow\n"); 1773 1774 bss_vif = iwl_mld_get_bss_vif(mld); 1775 if (WARN_ON(!bss_vif)) 1776 return 1; 1777 1778 if (!bss_vif->cfg.assoc) { 1779 int ret; 1780 /* If we're not associated, this must be netdetect */ 1781 if (WARN_ON(!wowlan->nd_config)) 1782 return 1; 1783 1784 ret = iwl_mld_netdetect_config(mld, bss_vif, wowlan); 1785 if (!ret) 1786 mld->netdetect = true; 1787 1788 return ret; 1789 } 1790 1791 return iwl_mld_wowlan_config(mld, bss_vif, wowlan); 1792 } 1793 1794 /* Returns 0 on success, 1 if an error occurred in firmware during d3, 1795 * A negative value is expected only in unrecovreable cases. 1796 */ 1797 int iwl_mld_wowlan_resume(struct iwl_mld *mld) 1798 { 1799 struct ieee80211_vif *bss_vif; 1800 struct ieee80211_bss_conf *link_conf; 1801 struct iwl_mld_netdetect_res netdetect_res; 1802 struct iwl_mld_resume_data resume_data = { 1803 .notifs_expected = 1804 IWL_D3_NOTIF_WOWLAN_INFO | 1805 IWL_D3_NOTIF_D3_END_NOTIF, 1806 .netdetect_res = &netdetect_res, 1807 }; 1808 int link_id; 1809 int ret; 1810 bool fw_err = false; 1811 1812 lockdep_assert_wiphy(mld->wiphy); 1813 1814 IWL_DEBUG_WOWLAN(mld, "Starting the wowlan resume flow\n"); 1815 1816 if (!mld->fw_status.in_d3) { 1817 IWL_DEBUG_WOWLAN(mld, 1818 "Device_powered_off() was called during wowlan\n"); 1819 goto err; 1820 } 1821 1822 mld->fw_status.resuming = true; 1823 mld->fw_status.in_d3 = false; 1824 mld->scan.last_start_time_jiffies = jiffies; 1825 1826 bss_vif = iwl_mld_get_bss_vif(mld); 1827 if (WARN_ON(!bss_vif)) 1828 goto err; 1829 1830 /* We can't have several links upon wowlan entry, 1831 * this is enforced in the suspend flow. 1832 */ 1833 WARN_ON(hweight16(bss_vif->active_links) > 1); 1834 link_id = bss_vif->active_links ? __ffs(bss_vif->active_links) : 0; 1835 link_conf = link_conf_dereference_protected(bss_vif, link_id); 1836 1837 if (WARN_ON(!link_conf)) 1838 goto err; 1839 1840 iwl_fw_dbg_read_d3_debug_data(&mld->fwrt); 1841 1842 resume_data.wowlan_status = kzalloc(sizeof(*resume_data.wowlan_status), 1843 GFP_KERNEL); 1844 if (!resume_data.wowlan_status) 1845 return -ENOMEM; 1846 1847 if (mld->netdetect) 1848 resume_data.notifs_expected |= IWL_D3_ND_MATCH_INFO; 1849 1850 ret = iwl_mld_wait_d3_notif(mld, &resume_data, true); 1851 if (ret) { 1852 IWL_ERR(mld, "Couldn't get the d3 notifs %d\n", ret); 1853 fw_err = true; 1854 goto err; 1855 } 1856 1857 if (resume_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE) { 1858 mld->fw_status.in_hw_restart = true; 1859 goto process_wakeup_results; 1860 } 1861 1862 iwl_mld_update_changed_regdomain(mld); 1863 iwl_mld_update_mac_power(mld, bss_vif, false); 1864 iwl_mld_enable_beacon_filter(mld, link_conf, false); 1865 iwl_mld_update_device_power(mld, false); 1866 1867 if (mld->netdetect) 1868 ret = iwl_mld_scan_stop(mld, IWL_MLD_SCAN_NETDETECT, false); 1869 1870 process_wakeup_results: 1871 if (mld->netdetect) { 1872 iwl_mld_process_netdetect_res(mld, bss_vif, &resume_data); 1873 mld->netdetect = false; 1874 } else { 1875 bool keep_connection = 1876 iwl_mld_process_wowlan_status(mld, bss_vif, 1877 resume_data.wowlan_status); 1878 1879 /* EMLSR state will be cleared if the connection is not kept */ 1880 if (keep_connection) 1881 iwl_mld_unblock_emlsr(mld, bss_vif, 1882 IWL_MLD_EMLSR_BLOCKED_WOWLAN); 1883 else 1884 ieee80211_resume_disconnect(bss_vif); 1885 } 1886 1887 goto out; 1888 1889 err: 1890 if (fw_err) { 1891 mld->trans->state = IWL_TRANS_NO_FW; 1892 set_bit(STATUS_FW_ERROR, &mld->trans->status); 1893 } 1894 1895 mld->fw_status.in_hw_restart = true; 1896 ret = 1; 1897 out: 1898 mld->fw_status.resuming = false; 1899 1900 if (resume_data.wowlan_status) { 1901 kfree(resume_data.wowlan_status->wake_packet); 1902 kfree(resume_data.wowlan_status); 1903 } 1904 1905 return ret; 1906 } 1907