drivers/net/wireless/intel/iwlwifi/mvm/d3.c

   1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
   2 /*
   3  * Copyright (C) 2012-2014, 2018-2022 Intel Corporation
   4  * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
   5  * Copyright (C) 2016-2017 Intel Deutschland GmbH
   6  */
   7 #include <linux/etherdevice.h>
   8 #include <linux/ip.h>
   9 #include <linux/fs.h>
  10 #include <net/cfg80211.h>
  11 #include <net/ipv6.h>
  12 #include <net/tcp.h>
  13 #include <net/addrconf.h>
  14 #include "iwl-modparams.h"
  15 #include "fw-api.h"
  16 #include "mvm.h"
  17 #include "fw/img.h"
  18
  19 void iwl_mvm_set_rekey_data(struct ieee80211_hw *hw,
  20                             struct ieee80211_vif *vif,
  21                             struct cfg80211_gtk_rekey_data *data)
  22 {
  23         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
  24         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
  25
  26         mutex_lock(&mvm->mutex);
  27
  28         mvmvif->rekey_data.kek_len = data->kek_len;
  29         mvmvif->rekey_data.kck_len = data->kck_len;
  30         memcpy(mvmvif->rekey_data.kek, data->kek, data->kek_len);
  31         memcpy(mvmvif->rekey_data.kck, data->kck, data->kck_len);
  32         mvmvif->rekey_data.akm = data->akm & 0xFF;
  33         mvmvif->rekey_data.replay_ctr =
  34                 cpu_to_le64(be64_to_cpup((const __be64 *)data->replay_ctr));
  35         mvmvif->rekey_data.valid = true;
  36
  37         mutex_unlock(&mvm->mutex);
  38 }
  39
  40 #if IS_ENABLED(CONFIG_IPV6)
  41 void iwl_mvm_ipv6_addr_change(struct ieee80211_hw *hw,
  42                               struct ieee80211_vif *vif,
  43                               struct inet6_dev *idev)
  44 {
  45         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
  46         struct inet6_ifaddr *ifa;
  47         int idx = 0;
  48
  49         memset(mvmvif->tentative_addrs, 0, sizeof(mvmvif->tentative_addrs));
  50
  51         read_lock_bh(&idev->lock);
  52         list_for_each_entry(ifa, &idev->addr_list, if_list) {
  53                 mvmvif->target_ipv6_addrs[idx] = ifa->addr;
  54                 if (ifa->flags & IFA_F_TENTATIVE)
  55                         __set_bit(idx, mvmvif->tentative_addrs);
  56                 idx++;
  57                 if (idx >= IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_MAX)
  58                         break;
  59         }
  60         read_unlock_bh(&idev->lock);
  61
  62         mvmvif->num_target_ipv6_addrs = idx;
  63 }
  64 #endif
  65
  66 void iwl_mvm_set_default_unicast_key(struct ieee80211_hw *hw,
  67                                      struct ieee80211_vif *vif, int idx)
  68 {
  69         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
  70
  71         mvmvif->tx_key_idx = idx;
  72 }
  73
  74 static void iwl_mvm_convert_p1k(u16 *p1k, __le16 *out)
  75 {
  76         int i;
  77
  78         for (i = 0; i < IWL_P1K_SIZE; i++)
  79                 out[i] = cpu_to_le16(p1k[i]);
  80 }
  81
  82 static const u8 *iwl_mvm_find_max_pn(struct ieee80211_key_conf *key,
  83                                      struct iwl_mvm_key_pn *ptk_pn,
  84                                      struct ieee80211_key_seq *seq,
  85                                      int tid, int queues)
  86 {
  87         const u8 *ret = seq->ccmp.pn;
  88         int i;
  89
  90         /* get the PN from mac80211, used on the default queue */
  91         ieee80211_get_key_rx_seq(key, tid, seq);
  92
  93         /* and use the internal data for the other queues */
  94         for (i = 1; i < queues; i++) {
  95                 const u8 *tmp = ptk_pn->q[i].pn[tid];
  96
  97                 if (memcmp(ret, tmp, IEEE80211_CCMP_PN_LEN) <= 0)
  98                         ret = tmp;
  99         }
 100
 101         return ret;
 102 }
 103
 104 struct wowlan_key_reprogram_data {
 105         bool error;
 106         int wep_key_idx;
 107 };
 108
 109 static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw,
 110                                         struct ieee80211_vif *vif,
 111                                         struct ieee80211_sta *sta,
 112                                         struct ieee80211_key_conf *key,
 113                                         void *_data)
 114 {
 115         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 116         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 117         struct wowlan_key_reprogram_data *data = _data;
 118         int ret;
 119
 120         switch (key->cipher) {
 121         case WLAN_CIPHER_SUITE_WEP40:
 122         case WLAN_CIPHER_SUITE_WEP104: { /* hack it for now */
 123                 struct {
 124                         struct iwl_mvm_wep_key_cmd wep_key_cmd;
 125                         struct iwl_mvm_wep_key wep_key;
 126                 } __packed wkc = {
 127                         .wep_key_cmd.mac_id_n_color =
 128                                 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
 129                                                                 mvmvif->color)),
 130                         .wep_key_cmd.num_keys = 1,
 131                         /* firmware sets STA_KEY_FLG_WEP_13BYTES */
 132                         .wep_key_cmd.decryption_type = STA_KEY_FLG_WEP,
 133                         .wep_key.key_index = key->keyidx,
 134                         .wep_key.key_size = key->keylen,
 135                 };
 136
 137                 /*
 138                  * This will fail -- the key functions don't set support
 139                  * pairwise WEP keys. However, that's better than silently
 140                  * failing WoWLAN. Or maybe not?
 141                  */
 142                 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
 143                         break;
 144
 145                 memcpy(&wkc.wep_key.key[3], key->key, key->keylen);
 146                 if (key->keyidx == mvmvif->tx_key_idx) {
 147                         /* TX key must be at offset 0 */
 148                         wkc.wep_key.key_offset = 0;
 149                 } else {
 150                         /* others start at 1 */
 151                         data->wep_key_idx++;
 152                         wkc.wep_key.key_offset = data->wep_key_idx;
 153                 }
 154
 155                 mutex_lock(&mvm->mutex);
 156                 ret = iwl_mvm_send_cmd_pdu(mvm, WEP_KEY, 0, sizeof(wkc), &wkc);
 157                 data->error = ret != 0;
 158
 159                 mvm->ptk_ivlen = key->iv_len;
 160                 mvm->ptk_icvlen = key->icv_len;
 161                 mvm->gtk_ivlen = key->iv_len;
 162                 mvm->gtk_icvlen = key->icv_len;
 163                 mutex_unlock(&mvm->mutex);
 164
 165                 /* don't upload key again */
 166                 return;
 167         }
 168         default:
 169                 data->error = true;
 170                 return;
 171         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 172         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 173                 return;
 174         case WLAN_CIPHER_SUITE_AES_CMAC:
 175                 /*
 176                  * Ignore CMAC keys -- the WoWLAN firmware doesn't support them
 177                  * but we also shouldn't abort suspend due to that. It does have
 178                  * support for the IGTK key renewal, but doesn't really use the
 179                  * IGTK for anything. This means we could spuriously wake up or
 180                  * be deauthenticated, but that was considered acceptable.
 181                  */
 182                 return;
 183         case WLAN_CIPHER_SUITE_TKIP:
 184         case WLAN_CIPHER_SUITE_CCMP:
 185         case WLAN_CIPHER_SUITE_GCMP:
 186         case WLAN_CIPHER_SUITE_GCMP_256:
 187                 break;
 188         }
 189
 190         mutex_lock(&mvm->mutex);
 191         /*
 192          * The D3 firmware hardcodes the key offset 0 as the key it
 193          * uses to transmit packets to the AP, i.e. the PTK.
 194          */
 195         if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
 196                 mvm->ptk_ivlen = key->iv_len;
 197                 mvm->ptk_icvlen = key->icv_len;
 198                 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 0);
 199         } else {
 200                 /*
 201                  * firmware only supports TSC/RSC for a single key,
 202                  * so if there are multiple keep overwriting them
 203                  * with new ones -- this relies on mac80211 doing
 204                  * list_add_tail().
 205                  */
 206                 mvm->gtk_ivlen = key->iv_len;
 207                 mvm->gtk_icvlen = key->icv_len;
 208                 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 1);
 209         }
 210         mutex_unlock(&mvm->mutex);
 211         data->error = ret != 0;
 212 }
 213
 214 struct wowlan_key_rsc_tsc_data {
 215         struct iwl_wowlan_rsc_tsc_params_cmd_v4 *rsc_tsc;
 216         bool have_rsc_tsc;
 217 };
 218
 219 static void iwl_mvm_wowlan_get_rsc_tsc_data(struct ieee80211_hw *hw,
 220                                             struct ieee80211_vif *vif,
 221                                             struct ieee80211_sta *sta,
 222                                             struct ieee80211_key_conf *key,
 223                                             void *_data)
 224 {
 225         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 226         struct wowlan_key_rsc_tsc_data *data = _data;
 227         struct aes_sc *aes_sc;
 228         struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
 229         struct ieee80211_key_seq seq;
 230         int i;
 231
 232         switch (key->cipher) {
 233         default:
 234                 break;
 235         case WLAN_CIPHER_SUITE_TKIP:
 236                 if (sta) {
 237                         u64 pn64;
 238
 239                         tkip_sc =
 240                            data->rsc_tsc->params.all_tsc_rsc.tkip.unicast_rsc;
 241                         tkip_tx_sc =
 242                                 &data->rsc_tsc->params.all_tsc_rsc.tkip.tsc;
 243
 244                         pn64 = atomic64_read(&key->tx_pn);
 245                         tkip_tx_sc->iv16 = cpu_to_le16(TKIP_PN_TO_IV16(pn64));
 246                         tkip_tx_sc->iv32 = cpu_to_le32(TKIP_PN_TO_IV32(pn64));
 247                 } else {
 248                         tkip_sc =
 249                           data->rsc_tsc->params.all_tsc_rsc.tkip.multicast_rsc;
 250                 }
 251
 252                 /*
 253                  * For non-QoS this relies on the fact that both the uCode and
 254                  * mac80211 use TID 0 (as they need to to avoid replay attacks)
 255                  * for checking the IV in the frames.
 256                  */
 257                 for (i = 0; i < IWL_NUM_RSC; i++) {
 258                         ieee80211_get_key_rx_seq(key, i, &seq);
 259                         tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
 260                         tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
 261                 }
 262
 263                 data->have_rsc_tsc = true;
 264                 break;
 265         case WLAN_CIPHER_SUITE_CCMP:
 266         case WLAN_CIPHER_SUITE_GCMP:
 267         case WLAN_CIPHER_SUITE_GCMP_256:
 268                 if (sta) {
 269                         struct aes_sc *aes_tx_sc;
 270                         u64 pn64;
 271
 272                         aes_sc =
 273                            data->rsc_tsc->params.all_tsc_rsc.aes.unicast_rsc;
 274                         aes_tx_sc =
 275                                 &data->rsc_tsc->params.all_tsc_rsc.aes.tsc;
 276
 277                         pn64 = atomic64_read(&key->tx_pn);
 278                         aes_tx_sc->pn = cpu_to_le64(pn64);
 279                 } else {
 280                         aes_sc =
 281                            data->rsc_tsc->params.all_tsc_rsc.aes.multicast_rsc;
 282                 }
 283
 284                 /*
 285                  * For non-QoS this relies on the fact that both the uCode and
 286                  * mac80211/our RX code use TID 0 for checking the PN.
 287                  */
 288                 if (sta && iwl_mvm_has_new_rx_api(mvm)) {
 289                         struct iwl_mvm_sta *mvmsta;
 290                         struct iwl_mvm_key_pn *ptk_pn;
 291                         const u8 *pn;
 292
 293                         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 294                         rcu_read_lock();
 295                         ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]);
 296                         if (WARN_ON(!ptk_pn)) {
 297                                 rcu_read_unlock();
 298                                 break;
 299                         }
 300
 301                         for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
 302                                 pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i,
 303                                                 mvm->trans->num_rx_queues);
 304                                 aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
 305                                                            ((u64)pn[4] << 8) |
 306                                                            ((u64)pn[3] << 16) |
 307                                                            ((u64)pn[2] << 24) |
 308                                                            ((u64)pn[1] << 32) |
 309                                                            ((u64)pn[0] << 40));
 310                         }
 311
 312                         rcu_read_unlock();
 313                 } else {
 314                         for (i = 0; i < IWL_NUM_RSC; i++) {
 315                                 u8 *pn = seq.ccmp.pn;
 316
 317                                 ieee80211_get_key_rx_seq(key, i, &seq);
 318                                 aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
 319                                                            ((u64)pn[4] << 8) |
 320                                                            ((u64)pn[3] << 16) |
 321                                                            ((u64)pn[2] << 24) |
 322                                                            ((u64)pn[1] << 32) |
 323                                                            ((u64)pn[0] << 40));
 324                         }
 325                 }
 326                 data->have_rsc_tsc = true;
 327                 break;
 328         }
 329 }
 330
 331 struct wowlan_key_rsc_v5_data {
 332         struct iwl_wowlan_rsc_tsc_params_cmd *rsc;
 333         bool have_rsc;
 334         int gtks;
 335         int gtk_ids[4];
 336 };
 337
 338 static void iwl_mvm_wowlan_get_rsc_v5_data(struct ieee80211_hw *hw,
 339                                            struct ieee80211_vif *vif,
 340                                            struct ieee80211_sta *sta,
 341                                            struct ieee80211_key_conf *key,
 342                                            void *_data)
 343 {
 344         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 345         struct wowlan_key_rsc_v5_data *data = _data;
 346         struct ieee80211_key_seq seq;
 347         __le64 *rsc;
 348         int i;
 349
 350         /* only for ciphers that can be PTK/GTK */
 351         switch (key->cipher) {
 352         default:
 353                 return;
 354         case WLAN_CIPHER_SUITE_TKIP:
 355         case WLAN_CIPHER_SUITE_CCMP:
 356         case WLAN_CIPHER_SUITE_GCMP:
 357         case WLAN_CIPHER_SUITE_GCMP_256:
 358                 break;
 359         }
 360
 361         if (sta) {
 362                 rsc = data->rsc->ucast_rsc;
 363         } else {
 364                 if (WARN_ON(data->gtks >= ARRAY_SIZE(data->gtk_ids)))
 365                         return;
 366                 data->gtk_ids[data->gtks] = key->keyidx;
 367                 rsc = data->rsc->mcast_rsc[data->gtks % 2];
 368                 if (WARN_ON(key->keyidx >=
 369                                 ARRAY_SIZE(data->rsc->mcast_key_id_map)))
 370                         return;
 371                 data->rsc->mcast_key_id_map[key->keyidx] = data->gtks % 2;
 372                 if (data->gtks >= 2) {
 373                         int prev = data->gtks - 2;
 374                         int prev_idx = data->gtk_ids[prev];
 375
 376                         data->rsc->mcast_key_id_map[prev_idx] =
 377                                 IWL_MCAST_KEY_MAP_INVALID;
 378                 }
 379                 data->gtks++;
 380         }
 381
 382         switch (key->cipher) {
 383         default:
 384                 WARN_ON(1);
 385                 break;
 386         case WLAN_CIPHER_SUITE_TKIP:
 387
 388                 /*
 389                  * For non-QoS this relies on the fact that both the uCode and
 390                  * mac80211 use TID 0 (as they need to to avoid replay attacks)
 391                  * for checking the IV in the frames.
 392                  */
 393                 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
 394                         ieee80211_get_key_rx_seq(key, i, &seq);
 395
 396                         rsc[i] = cpu_to_le64(((u64)seq.tkip.iv32 << 16) |
 397                                              seq.tkip.iv16);
 398                 }
 399
 400                 data->have_rsc = true;
 401                 break;
 402         case WLAN_CIPHER_SUITE_CCMP:
 403         case WLAN_CIPHER_SUITE_GCMP:
 404         case WLAN_CIPHER_SUITE_GCMP_256:
 405                 /*
 406                  * For non-QoS this relies on the fact that both the uCode and
 407                  * mac80211/our RX code use TID 0 for checking the PN.
 408                  */
 409                 if (sta) {
 410                         struct iwl_mvm_sta *mvmsta;
 411                         struct iwl_mvm_key_pn *ptk_pn;
 412                         const u8 *pn;
 413
 414                         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 415                         rcu_read_lock();
 416                         ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]);
 417                         if (WARN_ON(!ptk_pn)) {
 418                                 rcu_read_unlock();
 419                                 break;
 420                         }
 421
 422                         for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
 423                                 pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i,
 424                                                 mvm->trans->num_rx_queues);
 425                                 rsc[i] = cpu_to_le64((u64)pn[5] |
 426                                                      ((u64)pn[4] << 8) |
 427                                                      ((u64)pn[3] << 16) |
 428                                                      ((u64)pn[2] << 24) |
 429                                                      ((u64)pn[1] << 32) |
 430                                                      ((u64)pn[0] << 40));
 431                         }
 432
 433                         rcu_read_unlock();
 434                 } else {
 435                         for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
 436                                 u8 *pn = seq.ccmp.pn;
 437
 438                                 ieee80211_get_key_rx_seq(key, i, &seq);
 439                                 rsc[i] = cpu_to_le64((u64)pn[5] |
 440                                                      ((u64)pn[4] << 8) |
 441                                                      ((u64)pn[3] << 16) |
 442                                                      ((u64)pn[2] << 24) |
 443                                                      ((u64)pn[1] << 32) |
 444                                                      ((u64)pn[0] << 40));
 445                         }
 446                 }
 447                 data->have_rsc = true;
 448                 break;
 449         }
 450 }
 451
 452 static int iwl_mvm_wowlan_config_rsc_tsc(struct iwl_mvm *mvm,
 453                                          struct ieee80211_vif *vif)
 454 {
 455         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 456         int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TSC_RSC_PARAM,
 457                                         IWL_FW_CMD_VER_UNKNOWN);
 458         int ret;
 459
 460         if (ver == 5) {
 461                 struct wowlan_key_rsc_v5_data data = {};
 462                 int i;
 463
 464                 data.rsc = kmalloc(sizeof(*data.rsc), GFP_KERNEL);
 465                 if (!data.rsc)
 466                         return -ENOMEM;
 467
 468                 memset(data.rsc, 0xff, sizeof(*data.rsc));
 469
 470                 for (i = 0; i < ARRAY_SIZE(data.rsc->mcast_key_id_map); i++)
 471                         data.rsc->mcast_key_id_map[i] =
 472                                 IWL_MCAST_KEY_MAP_INVALID;
 473                 data.rsc->sta_id = cpu_to_le32(mvmvif->deflink.ap_sta_id);
 474
 475                 ieee80211_iter_keys(mvm->hw, vif,
 476                                     iwl_mvm_wowlan_get_rsc_v5_data,
 477                                     &data);
 478
 479                 if (data.have_rsc)
 480                         ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM,
 481                                                    CMD_ASYNC, sizeof(*data.rsc),
 482                                                    data.rsc);
 483                 else
 484                         ret = 0;
 485                 kfree(data.rsc);
 486         } else if (ver == 4 || ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN) {
 487                 struct wowlan_key_rsc_tsc_data data = {};
 488                 int size;
 489
 490                 data.rsc_tsc = kzalloc(sizeof(*data.rsc_tsc), GFP_KERNEL);
 491                 if (!data.rsc_tsc)
 492                         return -ENOMEM;
 493
 494                 if (ver == 4) {
 495                         size = sizeof(*data.rsc_tsc);
 496                         data.rsc_tsc->sta_id =
 497                                 cpu_to_le32(mvmvif->deflink.ap_sta_id);
 498                 } else {
 499                         /* ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN */
 500                         size = sizeof(data.rsc_tsc->params);
 501                 }
 502
 503                 ieee80211_iter_keys(mvm->hw, vif,
 504                                     iwl_mvm_wowlan_get_rsc_tsc_data,
 505                                     &data);
 506
 507                 if (data.have_rsc_tsc)
 508                         ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM,
 509                                                    CMD_ASYNC, size,
 510                                                    data.rsc_tsc);
 511                 else
 512                         ret = 0;
 513                 kfree(data.rsc_tsc);
 514         } else {
 515                 ret = 0;
 516                 WARN_ON_ONCE(1);
 517         }
 518
 519         return ret;
 520 }
 521
 522 struct wowlan_key_tkip_data {
 523         struct iwl_wowlan_tkip_params_cmd tkip;
 524         bool have_tkip_keys;
 525 };
 526
 527 static void iwl_mvm_wowlan_get_tkip_data(struct ieee80211_hw *hw,
 528                                          struct ieee80211_vif *vif,
 529                                          struct ieee80211_sta *sta,
 530                                          struct ieee80211_key_conf *key,
 531                                          void *_data)
 532 {
 533         struct wowlan_key_tkip_data *data = _data;
 534         struct iwl_p1k_cache *rx_p1ks;
 535         u8 *rx_mic_key;
 536         struct ieee80211_key_seq seq;
 537         u32 cur_rx_iv32 = 0;
 538         u16 p1k[IWL_P1K_SIZE];
 539         int i;
 540
 541         switch (key->cipher) {
 542         default:
 543                 break;
 544         case WLAN_CIPHER_SUITE_TKIP:
 545                 if (sta) {
 546                         u64 pn64;
 547
 548                         rx_p1ks = data->tkip.rx_uni;
 549
 550                         pn64 = atomic64_read(&key->tx_pn);
 551
 552                         ieee80211_get_tkip_p1k_iv(key, TKIP_PN_TO_IV32(pn64),
 553                                                   p1k);
 554                         iwl_mvm_convert_p1k(p1k, data->tkip.tx.p1k);
 555
 556                         memcpy(data->tkip.mic_keys.tx,
 557                                &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
 558                                IWL_MIC_KEY_SIZE);
 559
 560                         rx_mic_key = data->tkip.mic_keys.rx_unicast;
 561                 } else {
 562                         rx_p1ks = data->tkip.rx_multi;
 563                         rx_mic_key = data->tkip.mic_keys.rx_mcast;
 564                 }
 565
 566                 for (i = 0; i < IWL_NUM_RSC; i++) {
 567                         ieee80211_get_key_rx_seq(key, i, &seq);
 568                         /* wrapping isn't allowed, AP must rekey */
 569                         if (seq.tkip.iv32 > cur_rx_iv32)
 570                                 cur_rx_iv32 = seq.tkip.iv32;
 571                 }
 572
 573                 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
 574                                           cur_rx_iv32, p1k);
 575                 iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k);
 576                 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
 577                                           cur_rx_iv32 + 1, p1k);
 578                 iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k);
 579
 580                 memcpy(rx_mic_key,
 581                        &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
 582                        IWL_MIC_KEY_SIZE);
 583
 584                 data->have_tkip_keys = true;
 585                 break;
 586         }
 587 }
 588
 589 struct wowlan_key_gtk_type_iter {
 590         struct iwl_wowlan_kek_kck_material_cmd_v4 *kek_kck_cmd;
 591 };
 592
 593 static void iwl_mvm_wowlan_gtk_type_iter(struct ieee80211_hw *hw,
 594                                          struct ieee80211_vif *vif,
 595                                          struct ieee80211_sta *sta,
 596                                          struct ieee80211_key_conf *key,
 597                                          void *_data)
 598 {
 599         struct wowlan_key_gtk_type_iter *data = _data;
 600
 601         switch (key->cipher) {
 602         default:
 603                 return;
 604         case WLAN_CIPHER_SUITE_TKIP:
 605                 if (!sta)
 606                         data->kek_kck_cmd->gtk_cipher =
 607                                 cpu_to_le32(STA_KEY_FLG_TKIP);
 608                 return;
 609         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 610         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 611                 data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_GCMP);
 612                 return;
 613         case WLAN_CIPHER_SUITE_AES_CMAC:
 614                 data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_CCM);
 615                 return;
 616         case WLAN_CIPHER_SUITE_CCMP:
 617                 if (!sta)
 618                         data->kek_kck_cmd->gtk_cipher =
 619                                 cpu_to_le32(STA_KEY_FLG_CCM);
 620                 return;
 621         case WLAN_CIPHER_SUITE_GCMP:
 622         case WLAN_CIPHER_SUITE_GCMP_256:
 623                 if (!sta)
 624                         data->kek_kck_cmd->gtk_cipher =
 625                                 cpu_to_le32(STA_KEY_FLG_GCMP);
 626                 return;
 627         }
 628 }
 629
 630 static int iwl_mvm_send_patterns_v1(struct iwl_mvm *mvm,
 631                                     struct cfg80211_wowlan *wowlan)
 632 {
 633         struct iwl_wowlan_patterns_cmd_v1 *pattern_cmd;
 634         struct iwl_host_cmd cmd = {
 635                 .id = WOWLAN_PATTERNS,
 636                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
 637         };
 638         int i, err;
 639
 640         if (!wowlan->n_patterns)
 641                 return 0;
 642
 643         cmd.len[0] = struct_size(pattern_cmd, patterns, wowlan->n_patterns);
 644
 645         pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
 646         if (!pattern_cmd)
 647                 return -ENOMEM;
 648
 649         pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
 650
 651         for (i = 0; i < wowlan->n_patterns; i++) {
 652                 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
 653
 654                 memcpy(&pattern_cmd->patterns[i].mask,
 655                        wowlan->patterns[i].mask, mask_len);
 656                 memcpy(&pattern_cmd->patterns[i].pattern,
 657                        wowlan->patterns[i].pattern,
 658                        wowlan->patterns[i].pattern_len);
 659                 pattern_cmd->patterns[i].mask_size = mask_len;
 660                 pattern_cmd->patterns[i].pattern_size =
 661                         wowlan->patterns[i].pattern_len;
 662         }
 663
 664         cmd.data[0] = pattern_cmd;
 665         err = iwl_mvm_send_cmd(mvm, &cmd);
 666         kfree(pattern_cmd);
 667         return err;
 668 }
 669
 670 static int iwl_mvm_send_patterns(struct iwl_mvm *mvm,
 671                                  struct ieee80211_vif *vif,
 672                                  struct cfg80211_wowlan *wowlan)
 673 {
 674         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 675         struct iwl_wowlan_patterns_cmd *pattern_cmd;
 676         struct iwl_host_cmd cmd = {
 677                 .id = WOWLAN_PATTERNS,
 678                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
 679         };
 680         int i, err;
 681         int ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id,
 682                                         IWL_FW_CMD_VER_UNKNOWN);
 683
 684         if (!wowlan->n_patterns)
 685                 return 0;
 686
 687         cmd.len[0] = sizeof(*pattern_cmd) +
 688                 wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern_v2);
 689
 690         pattern_cmd = kzalloc(cmd.len[0], GFP_KERNEL);
 691         if (!pattern_cmd)
 692                 return -ENOMEM;
 693
 694         pattern_cmd->n_patterns = wowlan->n_patterns;
 695         if (ver >= 3)
 696                 pattern_cmd->sta_id = mvmvif->deflink.ap_sta_id;
 697
 698         for (i = 0; i < wowlan->n_patterns; i++) {
 699                 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
 700
 701                 pattern_cmd->patterns[i].pattern_type =
 702                         WOWLAN_PATTERN_TYPE_BITMASK;
 703
 704                 memcpy(&pattern_cmd->patterns[i].u.bitmask.mask,
 705                        wowlan->patterns[i].mask, mask_len);
 706                 memcpy(&pattern_cmd->patterns[i].u.bitmask.pattern,
 707                        wowlan->patterns[i].pattern,
 708                        wowlan->patterns[i].pattern_len);
 709                 pattern_cmd->patterns[i].u.bitmask.mask_size = mask_len;
 710                 pattern_cmd->patterns[i].u.bitmask.pattern_size =
 711                         wowlan->patterns[i].pattern_len;
 712         }
 713
 714         cmd.data[0] = pattern_cmd;
 715         err = iwl_mvm_send_cmd(mvm, &cmd);
 716         kfree(pattern_cmd);
 717         return err;
 718 }
 719
 720 static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 721                                 struct ieee80211_sta *ap_sta)
 722 {
 723         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 724         struct ieee80211_chanctx_conf *ctx;
 725         u8 chains_static, chains_dynamic;
 726         struct cfg80211_chan_def chandef;
 727         int ret, i;
 728         struct iwl_binding_cmd_v1 binding_cmd = {};
 729         struct iwl_time_quota_cmd quota_cmd = {};
 730         struct iwl_time_quota_data *quota;
 731         u32 status;
 732
 733         if (WARN_ON_ONCE(iwl_mvm_is_cdb_supported(mvm)))
 734                 return -EINVAL;
 735
 736         /* add back the PHY */
 737         if (WARN_ON(!mvmvif->deflink.phy_ctxt))
 738                 return -EINVAL;
 739
 740         rcu_read_lock();
 741         ctx = rcu_dereference(vif->bss_conf.chanctx_conf);
 742         if (WARN_ON(!ctx)) {
 743                 rcu_read_unlock();
 744                 return -EINVAL;
 745         }
 746         chandef = ctx->def;
 747         chains_static = ctx->rx_chains_static;
 748         chains_dynamic = ctx->rx_chains_dynamic;
 749         rcu_read_unlock();
 750
 751         ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->deflink.phy_ctxt, &chandef,
 752                                    chains_static, chains_dynamic);
 753         if (ret)
 754                 return ret;
 755
 756         /* add back the MAC */
 757         mvmvif->uploaded = false;
 758
 759         if (WARN_ON(!vif->cfg.assoc))
 760                 return -EINVAL;
 761
 762         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
 763         if (ret)
 764                 return ret;
 765
 766         /* add back binding - XXX refactor? */
 767         binding_cmd.id_and_color =
 768                 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id,
 769                                                 mvmvif->deflink.phy_ctxt->color));
 770         binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD);
 771         binding_cmd.phy =
 772                 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id,
 773                                                 mvmvif->deflink.phy_ctxt->color));
 774         binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
 775                                                               mvmvif->color));
 776         for (i = 1; i < MAX_MACS_IN_BINDING; i++)
 777                 binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID);
 778
 779         status = 0;
 780         ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD,
 781                                           IWL_BINDING_CMD_SIZE_V1, &binding_cmd,
 782                                           &status);
 783         if (ret) {
 784                 IWL_ERR(mvm, "Failed to add binding: %d\n", ret);
 785                 return ret;
 786         }
 787
 788         if (status) {
 789                 IWL_ERR(mvm, "Binding command failed: %u\n", status);
 790                 return -EIO;
 791         }
 792
 793         ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false, 0);
 794         if (ret)
 795                 return ret;
 796         rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->deflink.ap_sta_id],
 797                            ap_sta);
 798
 799         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
 800         if (ret)
 801                 return ret;
 802
 803         /* and some quota */
 804         quota = iwl_mvm_quota_cmd_get_quota(mvm, &quota_cmd, 0);
 805         quota->id_and_color =
 806                 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->deflink.phy_ctxt->id,
 807                                                 mvmvif->deflink.phy_ctxt->color));
 808         quota->quota = cpu_to_le32(IWL_MVM_MAX_QUOTA);
 809         quota->max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA);
 810
 811         for (i = 1; i < MAX_BINDINGS; i++) {
 812                 quota = iwl_mvm_quota_cmd_get_quota(mvm, &quota_cmd, i);
 813                 quota->id_and_color = cpu_to_le32(FW_CTXT_INVALID);
 814         }
 815
 816         ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0,
 817                                    iwl_mvm_quota_cmd_size(mvm), &quota_cmd);
 818         if (ret)
 819                 IWL_ERR(mvm, "Failed to send quota: %d\n", ret);
 820
 821         if (iwl_mvm_is_lar_supported(mvm) && iwl_mvm_init_fw_regd(mvm))
 822                 IWL_ERR(mvm, "Failed to initialize D3 LAR information\n");
 823
 824         return 0;
 825 }
 826
 827 static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm,
 828                                        struct ieee80211_vif *vif)
 829 {
 830         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 831         struct iwl_nonqos_seq_query_cmd query_cmd = {
 832                 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET),
 833                 .mac_id_n_color =
 834                         cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
 835                                                         mvmvif->color)),
 836         };
 837         struct iwl_host_cmd cmd = {
 838                 .id = NON_QOS_TX_COUNTER_CMD,
 839                 .flags = CMD_WANT_SKB,
 840         };
 841         int err;
 842         u32 size;
 843
 844         cmd.data[0] = &query_cmd;
 845         cmd.len[0] = sizeof(query_cmd);
 846
 847         err = iwl_mvm_send_cmd(mvm, &cmd);
 848         if (err)
 849                 return err;
 850
 851         size = iwl_rx_packet_payload_len(cmd.resp_pkt);
 852         if (size < sizeof(__le16)) {
 853                 err = -EINVAL;
 854         } else {
 855                 err = le16_to_cpup((__le16 *)cmd.resp_pkt->data);
 856                 /* firmware returns next, not last-used seqno */
 857                 err = (u16) (err - 0x10);
 858         }
 859
 860         iwl_free_resp(&cmd);
 861         return err;
 862 }
 863
 864 void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
 865 {
 866         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 867         struct iwl_nonqos_seq_query_cmd query_cmd = {
 868                 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET),
 869                 .mac_id_n_color =
 870                         cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
 871                                                         mvmvif->color)),
 872                 .value = cpu_to_le16(mvmvif->seqno),
 873         };
 874
 875         /* return if called during restart, not resume from D3 */
 876         if (!mvmvif->seqno_valid)
 877                 return;
 878
 879         mvmvif->seqno_valid = false;
 880
 881         if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0,
 882                                  sizeof(query_cmd), &query_cmd))
 883                 IWL_ERR(mvm, "failed to set non-QoS seqno\n");
 884 }
 885
 886 static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm)
 887 {
 888         iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
 889
 890         iwl_mvm_stop_device(mvm);
 891         /*
 892          * Set the HW restart bit -- this is mostly true as we're
 893          * going to load new firmware and reprogram that, though
 894          * the reprogramming is going to be manual to avoid adding
 895          * all the MACs that aren't support.
 896          * We don't have to clear up everything though because the
 897          * reprogramming is manual. When we resume, we'll actually
 898          * go through a proper restart sequence again to switch
 899          * back to the runtime firmware image.
 900          */
 901         set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
 902
 903         /* the fw is reset, so all the keys are cleared */
 904         memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
 905
 906         mvm->ptk_ivlen = 0;
 907         mvm->ptk_icvlen = 0;
 908         mvm->ptk_ivlen = 0;
 909         mvm->ptk_icvlen = 0;
 910
 911         return iwl_mvm_load_d3_fw(mvm);
 912 }
 913
 914 static int
 915 iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm,
 916                           struct cfg80211_wowlan *wowlan,
 917                           struct iwl_wowlan_config_cmd *wowlan_config_cmd,
 918                           struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
 919                           struct ieee80211_sta *ap_sta)
 920 {
 921         struct iwl_mvm_sta *mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
 922
 923         /* TODO: wowlan_config_cmd->wowlan_ba_teardown_tids */
 924
 925         wowlan_config_cmd->is_11n_connection =
 926                                         ap_sta->deflink.ht_cap.ht_supported;
 927         wowlan_config_cmd->flags = ENABLE_L3_FILTERING |
 928                 ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING;
 929
 930         if (iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_CONFIGURATION, 0) < 6) {
 931                 /* Query the last used seqno and set it */
 932                 int ret = iwl_mvm_get_last_nonqos_seq(mvm, vif);
 933
 934                 if (ret < 0)
 935                         return ret;
 936
 937                 wowlan_config_cmd->non_qos_seq = cpu_to_le16(ret);
 938         }
 939
 940         iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, wowlan_config_cmd);
 941
 942         if (wowlan->disconnect)
 943                 wowlan_config_cmd->wakeup_filter |=
 944                         cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
 945                                     IWL_WOWLAN_WAKEUP_LINK_CHANGE);
 946         if (wowlan->magic_pkt)
 947                 wowlan_config_cmd->wakeup_filter |=
 948                         cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET);
 949         if (wowlan->gtk_rekey_failure)
 950                 wowlan_config_cmd->wakeup_filter |=
 951                         cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
 952         if (wowlan->eap_identity_req)
 953                 wowlan_config_cmd->wakeup_filter |=
 954                         cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ);
 955         if (wowlan->four_way_handshake)
 956                 wowlan_config_cmd->wakeup_filter |=
 957                         cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
 958         if (wowlan->n_patterns)
 959                 wowlan_config_cmd->wakeup_filter |=
 960                         cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH);
 961
 962         if (wowlan->rfkill_release)
 963                 wowlan_config_cmd->wakeup_filter |=
 964                         cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
 965
 966         if (wowlan->tcp) {
 967                 /*
 968                  * Set the "link change" (really "link lost") flag as well
 969                  * since that implies losing the TCP connection.
 970                  */
 971                 wowlan_config_cmd->wakeup_filter |=
 972                         cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS |
 973                                     IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE |
 974                                     IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET |
 975                                     IWL_WOWLAN_WAKEUP_LINK_CHANGE);
 976         }
 977
 978         if (wowlan->any) {
 979                 wowlan_config_cmd->wakeup_filter |=
 980                         cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
 981                                     IWL_WOWLAN_WAKEUP_LINK_CHANGE |
 982                                     IWL_WOWLAN_WAKEUP_RX_FRAME |
 983                                     IWL_WOWLAN_WAKEUP_BCN_FILTERING);
 984         }
 985
 986         return 0;
 987 }
 988
 989 static int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm,
 990                                             struct ieee80211_vif *vif)
 991 {
 992         bool unified = fw_has_capa(&mvm->fw->ucode_capa,
 993                                    IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
 994         struct wowlan_key_reprogram_data key_data = {};
 995         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 996         int ret;
 997         u8 cmd_ver;
 998         size_t cmd_size;
 999
1000         if (!unified) {
1001                 /*
1002                  * if we have to configure keys, call ieee80211_iter_keys(),
1003                  * as we need non-atomic context in order to take the
1004                  * required locks.
1005                  */
1006                 /*
1007                  * Note that currently we don't use CMD_ASYNC in the iterator.
1008                  * In case of key_data.configure_keys, all the configured
1009                  * commands are SYNC, and iwl_mvm_wowlan_program_keys() will
1010                  * take care of locking/unlocking mvm->mutex.
1011                  */
1012                 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_program_keys,
1013                                     &key_data);
1014
1015                 if (key_data.error)
1016                         return -EIO;
1017         }
1018
1019         ret = iwl_mvm_wowlan_config_rsc_tsc(mvm, vif);
1020         if (ret)
1021                 return ret;
1022
1023         if (!fw_has_api(&mvm->fw->ucode_capa,
1024                         IWL_UCODE_TLV_API_TKIP_MIC_KEYS)) {
1025                 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TKIP_PARAM,
1026                                                 IWL_FW_CMD_VER_UNKNOWN);
1027                 struct wowlan_key_tkip_data tkip_data = {};
1028                 int size;
1029
1030                 if (ver == 2) {
1031                         size = sizeof(tkip_data.tkip);
1032                         tkip_data.tkip.sta_id =
1033                                 cpu_to_le32(mvmvif->deflink.ap_sta_id);
1034                 } else if (ver == 1 || ver == IWL_FW_CMD_VER_UNKNOWN) {
1035                         size = sizeof(struct iwl_wowlan_tkip_params_cmd_ver_1);
1036                 } else {
1037                         WARN_ON_ONCE(1);
1038                         return -EINVAL;
1039                 }
1040
1041                 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_get_tkip_data,
1042                                     &tkip_data);
1043
1044                 if (tkip_data.have_tkip_keys) {
1045                         /* send relevant data according to CMD version */
1046                         ret = iwl_mvm_send_cmd_pdu(mvm,
1047                                                    WOWLAN_TKIP_PARAM,
1048                                                    CMD_ASYNC, size,
1049                                                    &tkip_data.tkip);
1050                         if (ret)
1051                                 return ret;
1052                 }
1053         }
1054
1055         /* configure rekey data only if offloaded rekey is supported (d3) */
1056         if (mvmvif->rekey_data.valid) {
1057                 struct iwl_wowlan_kek_kck_material_cmd_v4 kek_kck_cmd = {};
1058                 struct iwl_wowlan_kek_kck_material_cmd_v4 *_kek_kck_cmd =
1059                         &kek_kck_cmd;
1060                 struct wowlan_key_gtk_type_iter gtk_type_data = {
1061                         .kek_kck_cmd = _kek_kck_cmd,
1062                 };
1063
1064                 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,
1065                                                 WOWLAN_KEK_KCK_MATERIAL,
1066                                                 IWL_FW_CMD_VER_UNKNOWN);
1067                 if (WARN_ON(cmd_ver != 2 && cmd_ver != 3 && cmd_ver != 4 &&
1068                             cmd_ver != IWL_FW_CMD_VER_UNKNOWN))
1069                         return -EINVAL;
1070
1071                 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_gtk_type_iter,
1072                                     &gtk_type_data);
1073
1074                 memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck,
1075                        mvmvif->rekey_data.kck_len);
1076                 kek_kck_cmd.kck_len = cpu_to_le16(mvmvif->rekey_data.kck_len);
1077                 memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek,
1078                        mvmvif->rekey_data.kek_len);
1079                 kek_kck_cmd.kek_len = cpu_to_le16(mvmvif->rekey_data.kek_len);
1080                 kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr;
1081                 kek_kck_cmd.akm = cpu_to_le32(mvmvif->rekey_data.akm);
1082                 kek_kck_cmd.sta_id = cpu_to_le32(mvmvif->deflink.ap_sta_id);
1083
1084                 if (cmd_ver == 4) {
1085                         cmd_size = sizeof(struct iwl_wowlan_kek_kck_material_cmd_v4);
1086                 } else {
1087                         if (cmd_ver == 3)
1088                                 cmd_size =
1089                                         sizeof(struct iwl_wowlan_kek_kck_material_cmd_v3);
1090                         else
1091                                 cmd_size =
1092                                         sizeof(struct iwl_wowlan_kek_kck_material_cmd_v2);
1093                         /* skip the sta_id at the beginning */
1094                         _kek_kck_cmd = (void *)
1095                                 ((u8 *)_kek_kck_cmd + sizeof(kek_kck_cmd.sta_id));
1096                 }
1097
1098                 IWL_DEBUG_WOWLAN(mvm, "setting akm %d\n",
1099                                  mvmvif->rekey_data.akm);
1100
1101                 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_KEK_KCK_MATERIAL,
1102                                            CMD_ASYNC, cmd_size, _kek_kck_cmd);
1103                 if (ret)
1104                         return ret;
1105         }
1106
1107         return 0;
1108 }
1109
1110 static int
1111 iwl_mvm_wowlan_config(struct iwl_mvm *mvm,
1112                       struct cfg80211_wowlan *wowlan,
1113                       struct iwl_wowlan_config_cmd *wowlan_config_cmd,
1114                       struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
1115                       struct ieee80211_sta *ap_sta)
1116 {
1117         int ret;
1118         bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1119                                          IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1120
1121         mvm->offload_tid = wowlan_config_cmd->offloading_tid;
1122
1123         if (!unified_image) {
1124                 ret = iwl_mvm_switch_to_d3(mvm);
1125                 if (ret)
1126                         return ret;
1127
1128                 ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta);
1129                 if (ret)
1130                         return ret;
1131         }
1132
1133         /*
1134          * This needs to be unlocked due to lock ordering
1135          * constraints. Since we're in the suspend path
1136          * that isn't really a problem though.
1137          */
1138         mutex_unlock(&mvm->mutex);
1139         ret = iwl_mvm_wowlan_config_key_params(mvm, vif);
1140         mutex_lock(&mvm->mutex);
1141         if (ret)
1142                 return ret;
1143
1144         ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0,
1145                                    sizeof(*wowlan_config_cmd),
1146                                    wowlan_config_cmd);
1147         if (ret)
1148                 return ret;
1149
1150         if (fw_has_api(&mvm->fw->ucode_capa,
1151                        IWL_UCODE_TLV_API_WOWLAN_TCP_SYN_WAKE))
1152                 ret = iwl_mvm_send_patterns(mvm, vif, wowlan);
1153         else
1154                 ret = iwl_mvm_send_patterns_v1(mvm, wowlan);
1155         if (ret)
1156                 return ret;
1157
1158         return iwl_mvm_send_proto_offload(mvm, vif, false, true, 0);
1159 }
1160
1161 static int
1162 iwl_mvm_netdetect_config(struct iwl_mvm *mvm,
1163                          struct cfg80211_wowlan *wowlan,
1164                          struct cfg80211_sched_scan_request *nd_config,
1165                          struct ieee80211_vif *vif)
1166 {
1167         int ret;
1168         bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1169                                          IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1170
1171         if (!unified_image) {
1172                 ret = iwl_mvm_switch_to_d3(mvm);
1173                 if (ret)
1174                         return ret;
1175         } else {
1176                 /* In theory, we wouldn't have to stop a running sched
1177                  * scan in order to start another one (for
1178                  * net-detect).  But in practice this doesn't seem to
1179                  * work properly, so stop any running sched_scan now.
1180                  */
1181                 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
1182                 if (ret)
1183                         return ret;
1184         }
1185
1186         ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies,
1187                                        IWL_MVM_SCAN_NETDETECT);
1188         if (ret)
1189                 return ret;
1190
1191         if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels))
1192                 return -EBUSY;
1193
1194         /* save the sched scan matchsets... */
1195         if (nd_config->n_match_sets) {
1196                 mvm->nd_match_sets = kmemdup(nd_config->match_sets,
1197                                              sizeof(*nd_config->match_sets) *
1198                                              nd_config->n_match_sets,
1199                                              GFP_KERNEL);
1200                 if (mvm->nd_match_sets)
1201                         mvm->n_nd_match_sets = nd_config->n_match_sets;
1202         }
1203
1204         /* ...and the sched scan channels for later reporting */
1205         mvm->nd_channels = kmemdup(nd_config->channels,
1206                                    sizeof(*nd_config->channels) *
1207                                    nd_config->n_channels,
1208                                    GFP_KERNEL);
1209         if (mvm->nd_channels)
1210                 mvm->n_nd_channels = nd_config->n_channels;
1211
1212         return 0;
1213 }
1214
1215 static void iwl_mvm_free_nd(struct iwl_mvm *mvm)
1216 {
1217         kfree(mvm->nd_match_sets);
1218         mvm->nd_match_sets = NULL;
1219         mvm->n_nd_match_sets = 0;
1220         kfree(mvm->nd_channels);
1221         mvm->nd_channels = NULL;
1222         mvm->n_nd_channels = 0;
1223 }
1224
1225 static int __iwl_mvm_suspend(struct ieee80211_hw *hw,
1226                              struct cfg80211_wowlan *wowlan,
1227                              bool test)
1228 {
1229         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1230         struct ieee80211_vif *vif = NULL;
1231         struct iwl_mvm_vif *mvmvif = NULL;
1232         struct ieee80211_sta *ap_sta = NULL;
1233         struct iwl_d3_manager_config d3_cfg_cmd_data = {
1234                 /*
1235                  * Program the minimum sleep time to 10 seconds, as many
1236                  * platforms have issues processing a wakeup signal while
1237                  * still being in the process of suspending.
1238                  */
1239                 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000),
1240         };
1241         struct iwl_host_cmd d3_cfg_cmd = {
1242                 .id = D3_CONFIG_CMD,
1243                 .flags = CMD_WANT_SKB | CMD_SEND_IN_D3,
1244                 .data[0] = &d3_cfg_cmd_data,
1245                 .len[0] = sizeof(d3_cfg_cmd_data),
1246         };
1247         int ret;
1248         int len __maybe_unused;
1249         bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1250                                          IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1251
1252         if (!wowlan) {
1253                 /*
1254                  * mac80211 shouldn't get here, but for D3 test
1255                  * it doesn't warrant a warning
1256                  */
1257                 WARN_ON(!test);
1258                 return -EINVAL;
1259         }
1260
1261         mutex_lock(&mvm->mutex);
1262
1263         set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
1264
1265         synchronize_net();
1266
1267         vif = iwl_mvm_get_bss_vif(mvm);
1268         if (IS_ERR_OR_NULL(vif)) {
1269                 ret = 1;
1270                 goto out_noreset;
1271         }
1272
1273         mvmvif = iwl_mvm_vif_from_mac80211(vif);
1274
1275         if (mvmvif->deflink.ap_sta_id == IWL_MVM_INVALID_STA) {
1276                 /* if we're not associated, this must be netdetect */
1277                 if (!wowlan->nd_config) {
1278                         ret = 1;
1279                         goto out_noreset;
1280                 }
1281
1282                 ret = iwl_mvm_netdetect_config(
1283                         mvm, wowlan, wowlan->nd_config, vif);
1284                 if (ret)
1285                         goto out;
1286
1287                 mvm->net_detect = true;
1288         } else {
1289                 struct iwl_wowlan_config_cmd wowlan_config_cmd = {};
1290
1291                 wowlan_config_cmd.sta_id = mvmvif->deflink.ap_sta_id;
1292
1293                 ap_sta = rcu_dereference_protected(
1294                         mvm->fw_id_to_mac_id[mvmvif->deflink.ap_sta_id],
1295                         lockdep_is_held(&mvm->mutex));
1296                 if (IS_ERR_OR_NULL(ap_sta)) {
1297                         ret = -EINVAL;
1298                         goto out_noreset;
1299                 }
1300
1301                 ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1302                                                 vif, mvmvif, ap_sta);
1303                 if (ret)
1304                         goto out_noreset;
1305                 ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1306                                             vif, mvmvif, ap_sta);
1307                 if (ret)
1308                         goto out;
1309
1310                 mvm->net_detect = false;
1311         }
1312
1313         ret = iwl_mvm_power_update_device(mvm);
1314         if (ret)
1315                 goto out;
1316
1317         ret = iwl_mvm_power_update_mac(mvm);
1318         if (ret)
1319                 goto out;
1320
1321 #ifdef CONFIG_IWLWIFI_DEBUGFS
1322         if (mvm->d3_wake_sysassert)
1323                 d3_cfg_cmd_data.wakeup_flags |=
1324                         cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR);
1325 #endif
1326
1327         /*
1328          * Prior to 9000 device family the driver needs to stop the dbg
1329          * recording before entering D3. In later devices the FW stops the
1330          * recording automatically.
1331          */
1332         if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_9000)
1333                 iwl_fw_dbg_stop_restart_recording(&mvm->fwrt, NULL, true);
1334
1335         mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_D3;
1336
1337         /* must be last -- this switches firmware state */
1338         ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd);
1339         if (ret)
1340                 goto out;
1341 #ifdef CONFIG_IWLWIFI_DEBUGFS
1342         len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt);
1343         if (len >= sizeof(u32)) {
1344                 mvm->d3_test_pme_ptr =
1345                         le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data);
1346         }
1347 #endif
1348         iwl_free_resp(&d3_cfg_cmd);
1349
1350         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1351
1352         ret = iwl_trans_d3_suspend(mvm->trans, test, !unified_image);
1353  out:
1354         if (ret < 0) {
1355                 iwl_mvm_free_nd(mvm);
1356
1357                 if (!unified_image) {
1358                         if (mvm->fw_restart > 0) {
1359                                 mvm->fw_restart--;
1360                                 ieee80211_restart_hw(mvm->hw);
1361                         }
1362                 }
1363
1364                 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
1365         }
1366  out_noreset:
1367         mutex_unlock(&mvm->mutex);
1368
1369         return ret;
1370 }
1371
1372 int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
1373 {
1374         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1375
1376         iwl_mvm_pause_tcm(mvm, true);
1377
1378         iwl_fw_runtime_suspend(&mvm->fwrt);
1379
1380         return __iwl_mvm_suspend(hw, wowlan, false);
1381 }
1382
1383 /* converted data from the different status responses */
1384 struct iwl_wowlan_status_data {
1385         u64 replay_ctr;
1386         u32 num_of_gtk_rekeys;
1387         u32 received_beacons;
1388         u32 wakeup_reasons;
1389         u32 wake_packet_length;
1390         u32 wake_packet_bufsize;
1391         u16 pattern_number;
1392         u16 non_qos_seq_ctr;
1393         u16 qos_seq_ctr[8];
1394         u8 tid_tear_down;
1395
1396         struct {
1397                 /* including RX MIC key for TKIP */
1398                 u8 key[WOWLAN_KEY_MAX_SIZE];
1399                 u8 len;
1400                 u8 flags;
1401         } gtk;
1402
1403         struct {
1404                 /*
1405                  * We store both the TKIP and AES representations
1406                  * coming from the firmware because we decode the
1407                  * data from there before we iterate the keys and
1408                  * know which one we need.
1409                  */
1410                 struct {
1411                         struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT];
1412                 } tkip, aes;
1413
1414                 /*
1415                  * We use -1 for when we have valid data but don't know
1416                  * the key ID from firmware, and thus it needs to be
1417                  * installed with the last key (depending on rekeying).
1418                  */
1419                 s8 key_id;
1420                 bool valid;
1421         } gtk_seq[2];
1422
1423         struct {
1424                 /* Same as above */
1425                 struct {
1426                         struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT];
1427                         u64 tx_pn;
1428                 } tkip, aes;
1429         } ptk;
1430
1431         struct {
1432                 u64 ipn;
1433                 u8 key[WOWLAN_KEY_MAX_SIZE];
1434                 u8 len;
1435                 u8 flags;
1436         } igtk;
1437
1438         u8 *wake_packet;
1439 };
1440
1441 static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm,
1442                                           struct ieee80211_vif *vif,
1443                                           struct iwl_wowlan_status_data *status)
1444 {
1445         struct sk_buff *pkt = NULL;
1446         struct cfg80211_wowlan_wakeup wakeup = {
1447                 .pattern_idx = -1,
1448         };
1449         struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
1450         u32 reasons = status->wakeup_reasons;
1451
1452         if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
1453                 wakeup_report = NULL;
1454                 goto report;
1455         }
1456
1457         pm_wakeup_event(mvm->dev, 0);
1458
1459         if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET)
1460                 wakeup.magic_pkt = true;
1461
1462         if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN)
1463                 wakeup.pattern_idx =
1464                         status->pattern_number;
1465
1466         if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1467                        IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH))
1468                 wakeup.disconnect = true;
1469
1470         if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)
1471                 wakeup.gtk_rekey_failure = true;
1472
1473         if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
1474                 wakeup.rfkill_release = true;
1475
1476         if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST)
1477                 wakeup.eap_identity_req = true;
1478
1479         if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE)
1480                 wakeup.four_way_handshake = true;
1481
1482         if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS)
1483                 wakeup.tcp_connlost = true;
1484
1485         if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE)
1486                 wakeup.tcp_nomoretokens = true;
1487
1488         if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET)
1489                 wakeup.tcp_match = true;
1490
1491         if (status->wake_packet) {
1492                 int pktsize = status->wake_packet_bufsize;
1493                 int pktlen = status->wake_packet_length;
1494                 const u8 *pktdata = status->wake_packet;
1495                 const struct ieee80211_hdr *hdr = (const void *)pktdata;
1496                 int truncated = pktlen - pktsize;
1497
1498                 /* this would be a firmware bug */
1499                 if (WARN_ON_ONCE(truncated < 0))
1500                         truncated = 0;
1501
1502                 if (ieee80211_is_data(hdr->frame_control)) {
1503                         int hdrlen = ieee80211_hdrlen(hdr->frame_control);
1504                         int ivlen = 0, icvlen = 4; /* also FCS */
1505
1506                         pkt = alloc_skb(pktsize, GFP_KERNEL);
1507                         if (!pkt)
1508                                 goto report;
1509
1510                         skb_put_data(pkt, pktdata, hdrlen);
1511                         pktdata += hdrlen;
1512                         pktsize -= hdrlen;
1513
1514                         if (ieee80211_has_protected(hdr->frame_control)) {
1515                                 /*
1516                                  * This is unlocked and using gtk_i(c)vlen,
1517                                  * but since everything is under RTNL still
1518                                  * that's not really a problem - changing
1519                                  * it would be difficult.
1520                                  */
1521                                 if (is_multicast_ether_addr(hdr->addr1)) {
1522                                         ivlen = mvm->gtk_ivlen;
1523                                         icvlen += mvm->gtk_icvlen;
1524                                 } else {
1525                                         ivlen = mvm->ptk_ivlen;
1526                                         icvlen += mvm->ptk_icvlen;
1527                                 }
1528                         }
1529
1530                         /* if truncated, FCS/ICV is (partially) gone */
1531                         if (truncated >= icvlen) {
1532                                 icvlen = 0;
1533                                 truncated -= icvlen;
1534                         } else {
1535                                 icvlen -= truncated;
1536                                 truncated = 0;
1537                         }
1538
1539                         pktsize -= ivlen + icvlen;
1540                         pktdata += ivlen;
1541
1542                         skb_put_data(pkt, pktdata, pktsize);
1543
1544                         if (ieee80211_data_to_8023(pkt, vif->addr, vif->type))
1545                                 goto report;
1546                         wakeup.packet = pkt->data;
1547                         wakeup.packet_present_len = pkt->len;
1548                         wakeup.packet_len = pkt->len - truncated;
1549                         wakeup.packet_80211 = false;
1550                 } else {
1551                         int fcslen = 4;
1552
1553                         if (truncated >= 4) {
1554                                 truncated -= 4;
1555                                 fcslen = 0;
1556                         } else {
1557                                 fcslen -= truncated;
1558                                 truncated = 0;
1559                         }
1560                         pktsize -= fcslen;
1561                         wakeup.packet = status->wake_packet;
1562                         wakeup.packet_present_len = pktsize;
1563                         wakeup.packet_len = pktlen - truncated;
1564                         wakeup.packet_80211 = true;
1565                 }
1566         }
1567
1568  report:
1569         ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
1570         kfree_skb(pkt);
1571 }
1572
1573 static void iwl_mvm_le64_to_aes_seq(__le64 le_pn, struct ieee80211_key_seq *seq)
1574 {
1575         u64 pn = le64_to_cpu(le_pn);
1576
1577         seq->ccmp.pn[0] = pn >> 40;
1578         seq->ccmp.pn[1] = pn >> 32;
1579         seq->ccmp.pn[2] = pn >> 24;
1580         seq->ccmp.pn[3] = pn >> 16;
1581         seq->ccmp.pn[4] = pn >> 8;
1582         seq->ccmp.pn[5] = pn;
1583 }
1584
1585 static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc,
1586                                   struct ieee80211_key_seq *seq)
1587 {
1588         iwl_mvm_le64_to_aes_seq(sc->pn, seq);
1589 }
1590
1591 static void iwl_mvm_le64_to_tkip_seq(__le64 le_pn, struct ieee80211_key_seq *seq)
1592 {
1593         u64 pn = le64_to_cpu(le_pn);
1594
1595         seq->tkip.iv16 = (u16)pn;
1596         seq->tkip.iv32 = (u32)(pn >> 16);
1597 }
1598
1599 static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc,
1600                                    struct ieee80211_key_seq *seq)
1601 {
1602         seq->tkip.iv32 = le32_to_cpu(sc->iv32);
1603         seq->tkip.iv16 = le16_to_cpu(sc->iv16);
1604 }
1605
1606 static void iwl_mvm_set_key_rx_seq_tids(struct ieee80211_key_conf *key,
1607                                         struct ieee80211_key_seq *seq)
1608 {
1609         int tid;
1610
1611         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++)
1612                 ieee80211_set_key_rx_seq(key, tid, &seq[tid]);
1613 }
1614
1615 static void iwl_mvm_set_aes_ptk_rx_seq(struct iwl_mvm *mvm,
1616                                        struct iwl_wowlan_status_data *status,
1617                                        struct ieee80211_sta *sta,
1618                                        struct ieee80211_key_conf *key)
1619 {
1620         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1621         struct iwl_mvm_key_pn *ptk_pn;
1622         int tid;
1623
1624         iwl_mvm_set_key_rx_seq_tids(key, status->ptk.aes.seq);
1625
1626         if (!iwl_mvm_has_new_rx_api(mvm))
1627                 return;
1628
1629
1630         rcu_read_lock();
1631         ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]);
1632         if (WARN_ON(!ptk_pn)) {
1633                 rcu_read_unlock();
1634                 return;
1635         }
1636
1637         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1638                 int i;
1639
1640                 for (i = 1; i < mvm->trans->num_rx_queues; i++)
1641                         memcpy(ptk_pn->q[i].pn[tid],
1642                                status->ptk.aes.seq[tid].ccmp.pn,
1643                                IEEE80211_CCMP_PN_LEN);
1644         }
1645         rcu_read_unlock();
1646 }
1647
1648 static void iwl_mvm_convert_key_counters(struct iwl_wowlan_status_data *status,
1649                                          union iwl_all_tsc_rsc *sc)
1650 {
1651         int i;
1652
1653         BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT);
1654         BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC);
1655
1656         /* GTK RX counters */
1657         for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1658                 iwl_mvm_tkip_sc_to_seq(&sc->tkip.multicast_rsc[i],
1659                                        &status->gtk_seq[0].tkip.seq[i]);
1660                 iwl_mvm_aes_sc_to_seq(&sc->aes.multicast_rsc[i],
1661                                       &status->gtk_seq[0].aes.seq[i]);
1662         }
1663         status->gtk_seq[0].valid = true;
1664         status->gtk_seq[0].key_id = -1;
1665
1666         /* PTK TX counter */
1667         status->ptk.tkip.tx_pn = (u64)le16_to_cpu(sc->tkip.tsc.iv16) |
1668                                  ((u64)le32_to_cpu(sc->tkip.tsc.iv32) << 16);
1669         status->ptk.aes.tx_pn = le64_to_cpu(sc->aes.tsc.pn);
1670
1671         /* PTK RX counters */
1672         for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1673                 iwl_mvm_tkip_sc_to_seq(&sc->tkip.unicast_rsc[i],
1674                                        &status->ptk.tkip.seq[i]);
1675                 iwl_mvm_aes_sc_to_seq(&sc->aes.unicast_rsc[i],
1676                                       &status->ptk.aes.seq[i]);
1677         }
1678 }
1679
1680 static void
1681 iwl_mvm_convert_key_counters_v5_gtk_seq(struct iwl_wowlan_status_data *status,
1682                                         struct iwl_wowlan_all_rsc_tsc_v5 *sc,
1683                                         unsigned int idx, unsigned int key_id)
1684 {
1685         int tid;
1686
1687         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1688                 iwl_mvm_le64_to_tkip_seq(sc->mcast_rsc[idx][tid],
1689                                          &status->gtk_seq[idx].tkip.seq[tid]);
1690                 iwl_mvm_le64_to_aes_seq(sc->mcast_rsc[idx][tid],
1691                                         &status->gtk_seq[idx].aes.seq[tid]);
1692         }
1693
1694         status->gtk_seq[idx].valid = true;
1695         status->gtk_seq[idx].key_id = key_id;
1696 }
1697
1698 static void
1699 iwl_mvm_convert_key_counters_v5(struct iwl_wowlan_status_data *status,
1700                                 struct iwl_wowlan_all_rsc_tsc_v5 *sc)
1701 {
1702         int i, tid;
1703
1704         BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT);
1705         BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC);
1706         BUILD_BUG_ON(ARRAY_SIZE(sc->mcast_rsc) != ARRAY_SIZE(status->gtk_seq));
1707
1708         /* GTK RX counters */
1709         for (i = 0; i < ARRAY_SIZE(sc->mcast_key_id_map); i++) {
1710                 u8 entry = sc->mcast_key_id_map[i];
1711
1712                 if (entry < ARRAY_SIZE(sc->mcast_rsc))
1713                         iwl_mvm_convert_key_counters_v5_gtk_seq(status, sc,
1714                                                                 entry, i);
1715         }
1716
1717         /* PTK TX counters not needed, assigned in device */
1718
1719         /* PTK RX counters */
1720         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1721                 iwl_mvm_le64_to_tkip_seq(sc->ucast_rsc[tid],
1722                                          &status->ptk.tkip.seq[tid]);
1723                 iwl_mvm_le64_to_aes_seq(sc->ucast_rsc[tid],
1724                                         &status->ptk.aes.seq[tid]);
1725         }
1726 }
1727
1728 static void iwl_mvm_set_key_rx_seq_idx(struct ieee80211_key_conf *key,
1729                                        struct iwl_wowlan_status_data *status,
1730                                        int idx)
1731 {
1732         switch (key->cipher) {
1733         case WLAN_CIPHER_SUITE_CCMP:
1734         case WLAN_CIPHER_SUITE_GCMP:
1735         case WLAN_CIPHER_SUITE_GCMP_256:
1736                 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].aes.seq);
1737                 break;
1738         case WLAN_CIPHER_SUITE_TKIP:
1739                 iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].tkip.seq);
1740                 break;
1741         default:
1742                 WARN_ON(1);
1743         }
1744 }
1745
1746 static void iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf *key,
1747                                    struct iwl_wowlan_status_data *status,
1748                                    bool installed)
1749 {
1750         int i;
1751
1752         for (i = 0; i < ARRAY_SIZE(status->gtk_seq); i++) {
1753                 if (!status->gtk_seq[i].valid)
1754                         continue;
1755
1756                 /* Handle the case where we know the key ID */
1757                 if (status->gtk_seq[i].key_id == key->keyidx) {
1758                         s8 new_key_id = -1;
1759
1760                         if (status->num_of_gtk_rekeys)
1761                                 new_key_id = status->gtk.flags &
1762                                                 IWL_WOWLAN_GTK_IDX_MASK;
1763
1764                         /* Don't install a new key's value to an old key */
1765                         if (new_key_id != key->keyidx)
1766                                 iwl_mvm_set_key_rx_seq_idx(key, status, i);
1767                         continue;
1768                 }
1769
1770                 /* handle the case where we didn't, last key only */
1771                 if (status->gtk_seq[i].key_id == -1 &&
1772                     (!status->num_of_gtk_rekeys || installed))
1773                         iwl_mvm_set_key_rx_seq_idx(key, status, i);
1774         }
1775 }
1776
1777 struct iwl_mvm_d3_gtk_iter_data {
1778         struct iwl_mvm *mvm;
1779         struct iwl_wowlan_status_data *status;
1780         void *last_gtk;
1781         u32 cipher;
1782         bool find_phase, unhandled_cipher;
1783         int num_keys;
1784 };
1785
1786 static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw,
1787                                    struct ieee80211_vif *vif,
1788                                    struct ieee80211_sta *sta,
1789                                    struct ieee80211_key_conf *key,
1790                                    void *_data)
1791 {
1792         struct iwl_mvm_d3_gtk_iter_data *data = _data;
1793         struct iwl_wowlan_status_data *status = data->status;
1794
1795         if (data->unhandled_cipher)
1796                 return;
1797
1798         switch (key->cipher) {
1799         case WLAN_CIPHER_SUITE_WEP40:
1800         case WLAN_CIPHER_SUITE_WEP104:
1801                 /* ignore WEP completely, nothing to do */
1802                 return;
1803         case WLAN_CIPHER_SUITE_CCMP:
1804         case WLAN_CIPHER_SUITE_GCMP:
1805         case WLAN_CIPHER_SUITE_GCMP_256:
1806         case WLAN_CIPHER_SUITE_TKIP:
1807                 /* we support these */
1808                 break;
1809         default:
1810                 /* everything else (even CMAC for MFP) - disconnect from AP */
1811                 data->unhandled_cipher = true;
1812                 return;
1813         }
1814
1815         data->num_keys++;
1816
1817         /*
1818          * pairwise key - update sequence counters only;
1819          * note that this assumes no TDLS sessions are active
1820          */
1821         if (sta) {
1822                 if (data->find_phase)
1823                         return;
1824
1825                 switch (key->cipher) {
1826                 case WLAN_CIPHER_SUITE_CCMP:
1827                 case WLAN_CIPHER_SUITE_GCMP:
1828                 case WLAN_CIPHER_SUITE_GCMP_256:
1829                         atomic64_set(&key->tx_pn, status->ptk.aes.tx_pn);
1830                         iwl_mvm_set_aes_ptk_rx_seq(data->mvm, status, sta, key);
1831                         break;
1832                 case WLAN_CIPHER_SUITE_TKIP:
1833                         atomic64_set(&key->tx_pn, status->ptk.tkip.tx_pn);
1834                         iwl_mvm_set_key_rx_seq_tids(key, status->ptk.tkip.seq);
1835                         break;
1836                 }
1837
1838                 /* that's it for this key */
1839                 return;
1840         }
1841
1842         if (data->find_phase) {
1843                 data->last_gtk = key;
1844                 data->cipher = key->cipher;
1845                 return;
1846         }
1847
1848         if (data->status->num_of_gtk_rekeys)
1849                 ieee80211_remove_key(key);
1850
1851         if (data->last_gtk == key)
1852                 iwl_mvm_set_key_rx_seq(key, data->status, false);
1853 }
1854
1855 static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm,
1856                                           struct ieee80211_vif *vif,
1857                                           struct iwl_wowlan_status_data *status)
1858 {
1859         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1860         struct iwl_mvm_d3_gtk_iter_data gtkdata = {
1861                 .mvm = mvm,
1862                 .status = status,
1863         };
1864         u32 disconnection_reasons =
1865                 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1866                 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH;
1867
1868         if (!status || !vif->bss_conf.bssid)
1869                 return false;
1870
1871         if (status->wakeup_reasons & disconnection_reasons)
1872                 return false;
1873
1874         /* find last GTK that we used initially, if any */
1875         gtkdata.find_phase = true;
1876         ieee80211_iter_keys(mvm->hw, vif,
1877                             iwl_mvm_d3_update_keys, &gtkdata);
1878         /* not trying to keep connections with MFP/unhandled ciphers */
1879         if (gtkdata.unhandled_cipher)
1880                 return false;
1881         if (!gtkdata.num_keys)
1882                 goto out;
1883         if (!gtkdata.last_gtk)
1884                 return false;
1885
1886         /*
1887          * invalidate all other GTKs that might still exist and update
1888          * the one that we used
1889          */
1890         gtkdata.find_phase = false;
1891         ieee80211_iter_keys(mvm->hw, vif,
1892                             iwl_mvm_d3_update_keys, &gtkdata);
1893
1894         IWL_DEBUG_WOWLAN(mvm, "num of GTK rekeying %d\n",
1895                          status->num_of_gtk_rekeys);
1896         if (status->num_of_gtk_rekeys) {
1897                 struct ieee80211_key_conf *key;
1898                 struct {
1899                         struct ieee80211_key_conf conf;
1900                         u8 key[32];
1901                 } conf = {
1902                         .conf.cipher = gtkdata.cipher,
1903                         .conf.keyidx =
1904                                 status->gtk.flags & IWL_WOWLAN_GTK_IDX_MASK,
1905                 };
1906                 __be64 replay_ctr;
1907
1908                 IWL_DEBUG_WOWLAN(mvm,
1909                                  "Received from FW GTK cipher %d, key index %d\n",
1910                                  conf.conf.cipher, conf.conf.keyidx);
1911
1912                 BUILD_BUG_ON(WLAN_KEY_LEN_CCMP != WLAN_KEY_LEN_GCMP);
1913                 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_CCMP);
1914                 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_GCMP_256);
1915                 BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_TKIP);
1916                 BUILD_BUG_ON(sizeof(conf.key) < sizeof(status->gtk.key));
1917
1918                 memcpy(conf.conf.key, status->gtk.key, sizeof(status->gtk.key));
1919
1920                 switch (gtkdata.cipher) {
1921                 case WLAN_CIPHER_SUITE_CCMP:
1922                 case WLAN_CIPHER_SUITE_GCMP:
1923                         conf.conf.keylen = WLAN_KEY_LEN_CCMP;
1924                         break;
1925                 case WLAN_CIPHER_SUITE_GCMP_256:
1926                         conf.conf.keylen = WLAN_KEY_LEN_GCMP_256;
1927                         break;
1928                 case WLAN_CIPHER_SUITE_TKIP:
1929                         conf.conf.keylen = WLAN_KEY_LEN_TKIP;
1930                         break;
1931                 }
1932
1933                 key = ieee80211_gtk_rekey_add(vif, &conf.conf);
1934                 if (IS_ERR(key))
1935                         return false;
1936                 iwl_mvm_set_key_rx_seq(key, status, true);
1937
1938                 replay_ctr = cpu_to_be64(status->replay_ctr);
1939
1940                 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid,
1941                                            (void *)&replay_ctr, GFP_KERNEL);
1942         }
1943
1944 out:
1945         if (iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP,
1946                                     WOWLAN_GET_STATUSES, 0) < 10) {
1947                 mvmvif->seqno_valid = true;
1948                 /* +0x10 because the set API expects next-to-use, not last-used */
1949                 mvmvif->seqno = status->non_qos_seq_ctr + 0x10;
1950         }
1951
1952         return true;
1953 }
1954
1955 static void iwl_mvm_convert_gtk_v2(struct iwl_wowlan_status_data *status,
1956                                    struct iwl_wowlan_gtk_status_v2 *data)
1957 {
1958         BUILD_BUG_ON(sizeof(status->gtk.key) < sizeof(data->key));
1959         BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY +
1960                      sizeof(data->tkip_mic_key) >
1961                      sizeof(status->gtk.key));
1962
1963         status->gtk.len = data->key_len;
1964         status->gtk.flags = data->key_flags;
1965
1966         memcpy(status->gtk.key, data->key, sizeof(data->key));
1967
1968         /* if it's as long as the TKIP encryption key, copy MIC key */
1969         if (status->gtk.len == NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY)
1970                 memcpy(status->gtk.key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
1971                        data->tkip_mic_key, sizeof(data->tkip_mic_key));
1972 }
1973
1974 static void iwl_mvm_convert_gtk_v3(struct iwl_wowlan_status_data *status,
1975                                    struct iwl_wowlan_gtk_status_v3 *data)
1976 {
1977         /* The parts we need are identical in v2 and v3 */
1978 #define CHECK(_f) do {                                                  \
1979         BUILD_BUG_ON(offsetof(struct iwl_wowlan_gtk_status_v2, _f) !=   \
1980                      offsetof(struct iwl_wowlan_gtk_status_v3, _f));    \
1981         BUILD_BUG_ON(offsetofend(struct iwl_wowlan_gtk_status_v2, _f) !=\
1982                      offsetofend(struct iwl_wowlan_gtk_status_v3, _f)); \
1983 } while (0)
1984
1985         CHECK(key);
1986         CHECK(key_len);
1987         CHECK(key_flags);
1988         CHECK(tkip_mic_key);
1989 #undef CHECK
1990
1991         iwl_mvm_convert_gtk_v2(status, (void *)data);
1992 }
1993
1994 static void iwl_mvm_convert_igtk(struct iwl_wowlan_status_data *status,
1995                                  struct iwl_wowlan_igtk_status *data)
1996 {
1997         const u8 *ipn = data->ipn;
1998
1999         BUILD_BUG_ON(sizeof(status->igtk.key) < sizeof(data->key));
2000
2001         status->igtk.len = data->key_len;
2002         status->igtk.flags = data->key_flags;
2003
2004         memcpy(status->igtk.key, data->key, sizeof(data->key));
2005
2006         status->igtk.ipn = ((u64)ipn[5] <<  0) |
2007                            ((u64)ipn[4] <<  8) |
2008                            ((u64)ipn[3] << 16) |
2009                            ((u64)ipn[2] << 24) |
2010                            ((u64)ipn[1] << 32) |
2011                            ((u64)ipn[0] << 40);
2012 }
2013
2014 static void iwl_mvm_parse_wowlan_info_notif(struct iwl_mvm *mvm,
2015                                             struct iwl_wowlan_info_notif *data,
2016                                             struct iwl_wowlan_status_data *status,
2017                                             u32 len)
2018 {
2019         u32 i;
2020
2021         if (!data) {
2022                 IWL_ERR(mvm, "iwl_wowlan_info_notif data is NULL\n");
2023                 status = NULL;
2024                 return;
2025         }
2026
2027         if (len < sizeof(*data)) {
2028                 IWL_ERR(mvm, "Invalid WoWLAN info notification!\n");
2029                 status = NULL;
2030                 return;
2031         }
2032
2033         iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc);
2034         iwl_mvm_convert_gtk_v3(status, &data->gtk[0]);
2035         iwl_mvm_convert_igtk(status, &data->igtk[0]);
2036
2037         status->replay_ctr = le64_to_cpu(data->replay_ctr);
2038         status->pattern_number = le16_to_cpu(data->pattern_number);
2039         for (i = 0; i < IWL_MAX_TID_COUNT; i++)
2040                 status->qos_seq_ctr[i] =
2041                         le16_to_cpu(data->qos_seq_ctr[i]);
2042         status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons);
2043         status->num_of_gtk_rekeys =
2044                 le32_to_cpu(data->num_of_gtk_rekeys);
2045         status->received_beacons = le32_to_cpu(data->received_beacons);
2046         status->tid_tear_down = data->tid_tear_down;
2047 }
2048
2049 /* Occasionally, templates would be nice. This is one of those times ... */
2050 #define iwl_mvm_parse_wowlan_status_common(_ver)                        \
2051 static struct iwl_wowlan_status_data *                                  \
2052 iwl_mvm_parse_wowlan_status_common_ ## _ver(struct iwl_mvm *mvm,        \
2053                                             struct iwl_wowlan_status_ ##_ver *data,\
2054                                             int len)                    \
2055 {                                                                       \
2056         struct iwl_wowlan_status_data *status;                          \
2057         int data_size, i;                                               \
2058                                                                         \
2059         if (len < sizeof(*data)) {                                      \
2060                 IWL_ERR(mvm, "Invalid WoWLAN status response!\n");      \
2061                 return NULL;                                            \
2062         }                                                               \
2063                                                                         \
2064         data_size = ALIGN(le32_to_cpu(data->wake_packet_bufsize), 4);   \
2065         if (len != sizeof(*data) + data_size) {                         \
2066                 IWL_ERR(mvm, "Invalid WoWLAN status response!\n");      \
2067                 return NULL;                                            \
2068         }                                                               \
2069                                                                         \
2070         status = kzalloc(sizeof(*status), GFP_KERNEL);                  \
2071         if (!status)                                                    \
2072                 return NULL;                                            \
2073                                                                         \
2074         /* copy all the common fields */                                \
2075         status->replay_ctr = le64_to_cpu(data->replay_ctr);             \
2076         status->pattern_number = le16_to_cpu(data->pattern_number);     \
2077         status->non_qos_seq_ctr = le16_to_cpu(data->non_qos_seq_ctr);   \
2078         for (i = 0; i < 8; i++)                                         \
2079                 status->qos_seq_ctr[i] =                                \
2080                         le16_to_cpu(data->qos_seq_ctr[i]);              \
2081         status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons);     \
2082         status->num_of_gtk_rekeys =                                     \
2083                 le32_to_cpu(data->num_of_gtk_rekeys);                   \
2084         status->received_beacons = le32_to_cpu(data->received_beacons); \
2085         status->wake_packet_length =                                    \
2086                 le32_to_cpu(data->wake_packet_length);                  \
2087         status->wake_packet_bufsize =                                   \
2088                 le32_to_cpu(data->wake_packet_bufsize);                 \
2089         if (status->wake_packet_bufsize) {                              \
2090                 status->wake_packet =                                   \
2091                         kmemdup(data->wake_packet,                      \
2092                                 status->wake_packet_bufsize,            \
2093                                 GFP_KERNEL);                            \
2094                 if (!status->wake_packet) {                             \
2095                         kfree(status);                                  \
2096                         return NULL;                                    \
2097                 }                                                       \
2098         } else {                                                        \
2099                 status->wake_packet = NULL;                             \
2100         }                                                               \
2101                                                                         \
2102         return status;                                                  \
2103 }
2104
2105 iwl_mvm_parse_wowlan_status_common(v6)
2106 iwl_mvm_parse_wowlan_status_common(v7)
2107 iwl_mvm_parse_wowlan_status_common(v9)
2108 iwl_mvm_parse_wowlan_status_common(v12)
2109
2110 static struct iwl_wowlan_status_data *
2111 iwl_mvm_send_wowlan_get_status(struct iwl_mvm *mvm, u8 sta_id)
2112 {
2113         struct iwl_wowlan_status_data *status;
2114         struct iwl_wowlan_get_status_cmd get_status_cmd = {
2115                 .sta_id = cpu_to_le32(sta_id),
2116         };
2117         struct iwl_host_cmd cmd = {
2118                 .id = WOWLAN_GET_STATUSES,
2119                 .flags = CMD_WANT_SKB,
2120                 .data = { &get_status_cmd, },
2121                 .len = { sizeof(get_status_cmd), },
2122         };
2123         int ret, len;
2124         u8 notif_ver;
2125         u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id,
2126                                            IWL_FW_CMD_VER_UNKNOWN);
2127
2128         if (cmd_ver == IWL_FW_CMD_VER_UNKNOWN)
2129                 cmd.len[0] = 0;
2130
2131         lockdep_assert_held(&mvm->mutex);
2132
2133         ret = iwl_mvm_send_cmd(mvm, &cmd);
2134         if (ret) {
2135                 IWL_ERR(mvm, "failed to query wakeup status (%d)\n", ret);
2136                 return ERR_PTR(ret);
2137         }
2138
2139         len = iwl_rx_packet_payload_len(cmd.resp_pkt);
2140
2141         /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */
2142         notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP,
2143                                             WOWLAN_GET_STATUSES, 0);
2144         if (!notif_ver)
2145                 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
2146                                                     WOWLAN_GET_STATUSES, 7);
2147
2148         if (!fw_has_api(&mvm->fw->ucode_capa,
2149                         IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL)) {
2150                 struct iwl_wowlan_status_v6 *v6 = (void *)cmd.resp_pkt->data;
2151
2152                 status = iwl_mvm_parse_wowlan_status_common_v6(mvm, v6, len);
2153                 if (!status)
2154                         goto out_free_resp;
2155
2156                 BUILD_BUG_ON(sizeof(v6->gtk.decrypt_key) >
2157                              sizeof(status->gtk.key));
2158                 BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY +
2159                              sizeof(v6->gtk.tkip_mic_key) >
2160                              sizeof(status->gtk.key));
2161
2162                 /* copy GTK info to the right place */
2163                 memcpy(status->gtk.key, v6->gtk.decrypt_key,
2164                        sizeof(v6->gtk.decrypt_key));
2165                 memcpy(status->gtk.key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
2166                        v6->gtk.tkip_mic_key,
2167                        sizeof(v6->gtk.tkip_mic_key));
2168
2169                 iwl_mvm_convert_key_counters(status, &v6->gtk.rsc.all_tsc_rsc);
2170
2171                 /* hardcode the key length to 16 since v6 only supports 16 */
2172                 status->gtk.len = 16;
2173
2174                 /*
2175                  * The key index only uses 2 bits (values 0 to 3) and
2176                  * we always set bit 7 which means this is the
2177                  * currently used key.
2178                  */
2179                 status->gtk.flags = v6->gtk.key_index | BIT(7);
2180         } else if (notif_ver == 7) {
2181                 struct iwl_wowlan_status_v7 *v7 = (void *)cmd.resp_pkt->data;
2182
2183                 status = iwl_mvm_parse_wowlan_status_common_v7(mvm, v7, len);
2184                 if (!status)
2185                         goto out_free_resp;
2186
2187                 iwl_mvm_convert_key_counters(status, &v7->gtk[0].rsc.all_tsc_rsc);
2188                 iwl_mvm_convert_gtk_v2(status, &v7->gtk[0]);
2189                 iwl_mvm_convert_igtk(status, &v7->igtk[0]);
2190         } else if (notif_ver == 9 || notif_ver == 10 || notif_ver == 11) {
2191                 struct iwl_wowlan_status_v9 *v9 = (void *)cmd.resp_pkt->data;
2192
2193                 /* these three command versions have same layout and size, the
2194                  * difference is only in a few not used (reserved) fields.
2195                  */
2196                 status = iwl_mvm_parse_wowlan_status_common_v9(mvm, v9, len);
2197                 if (!status)
2198                         goto out_free_resp;
2199
2200                 iwl_mvm_convert_key_counters(status, &v9->gtk[0].rsc.all_tsc_rsc);
2201                 iwl_mvm_convert_gtk_v2(status, &v9->gtk[0]);
2202                 iwl_mvm_convert_igtk(status, &v9->igtk[0]);
2203
2204                 status->tid_tear_down = v9->tid_tear_down;
2205         } else if (notif_ver == 12) {
2206                 struct iwl_wowlan_status_v12 *v12 = (void *)cmd.resp_pkt->data;
2207
2208                 status = iwl_mvm_parse_wowlan_status_common_v12(mvm, v12, len);
2209                 if (!status)
2210                         goto out_free_resp;
2211
2212                 iwl_mvm_convert_key_counters_v5(status, &v12->gtk[0].sc);
2213                 iwl_mvm_convert_gtk_v3(status, &v12->gtk[0]);
2214                 iwl_mvm_convert_igtk(status, &v12->igtk[0]);
2215
2216                 status->tid_tear_down = v12->tid_tear_down;
2217         } else {
2218                 IWL_ERR(mvm,
2219                         "Firmware advertises unknown WoWLAN status response %d!\n",
2220                         notif_ver);
2221                 status = NULL;
2222         }
2223
2224 out_free_resp:
2225         iwl_free_resp(&cmd);
2226         return status;
2227 }
2228
2229 /* releases the MVM mutex */
2230 static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm,
2231                                          struct ieee80211_vif *vif,
2232                                          struct iwl_wowlan_status_data *status)
2233 {
2234         int i;
2235         bool keep;
2236         struct iwl_mvm_sta *mvm_ap_sta;
2237
2238         if (!status)
2239                 goto out_unlock;
2240
2241         IWL_DEBUG_WOWLAN(mvm, "wakeup reason 0x%x\n",
2242                          status->wakeup_reasons);
2243
2244         /* still at hard-coded place 0 for D3 image */
2245         mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, 0);
2246         if (!mvm_ap_sta)
2247                 goto out_unlock;
2248
2249         for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
2250                 u16 seq = status->qos_seq_ctr[i];
2251                 /* firmware stores last-used value, we store next value */
2252                 seq += 0x10;
2253                 mvm_ap_sta->tid_data[i].seq_number = seq;
2254         }
2255
2256         if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000) {
2257                 i = mvm->offload_tid;
2258                 iwl_trans_set_q_ptrs(mvm->trans,
2259                                      mvm_ap_sta->tid_data[i].txq_id,
2260                                      mvm_ap_sta->tid_data[i].seq_number >> 4);
2261         }
2262
2263         /* now we have all the data we need, unlock to avoid mac80211 issues */
2264         mutex_unlock(&mvm->mutex);
2265
2266         iwl_mvm_report_wakeup_reasons(mvm, vif, status);
2267
2268         keep = iwl_mvm_setup_connection_keep(mvm, vif, status);
2269
2270         return keep;
2271
2272 out_unlock:
2273         mutex_unlock(&mvm->mutex);
2274         return false;
2275 }
2276
2277 #define ND_QUERY_BUF_LEN (sizeof(struct iwl_scan_offload_profile_match) * \
2278                           IWL_SCAN_MAX_PROFILES)
2279
2280 struct iwl_mvm_nd_results {
2281         u32 matched_profiles;
2282         u8 matches[ND_QUERY_BUF_LEN];
2283 };
2284
2285 static int
2286 iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm,
2287                                 struct iwl_mvm_nd_results *results)
2288 {
2289         struct iwl_scan_offload_match_info *query;
2290         struct iwl_host_cmd cmd = {
2291                 .id = SCAN_OFFLOAD_PROFILES_QUERY_CMD,
2292                 .flags = CMD_WANT_SKB,
2293         };
2294         int ret, len;
2295         size_t query_len, matches_len;
2296         int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw);
2297
2298         ret = iwl_mvm_send_cmd(mvm, &cmd);
2299         if (ret) {
2300                 IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret);
2301                 return ret;
2302         }
2303
2304         if (fw_has_api(&mvm->fw->ucode_capa,
2305                        IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2306                 query_len = sizeof(struct iwl_scan_offload_match_info);
2307                 matches_len = sizeof(struct iwl_scan_offload_profile_match) *
2308                         max_profiles;
2309         } else {
2310                 query_len = sizeof(struct iwl_scan_offload_profiles_query_v1);
2311                 matches_len = sizeof(struct iwl_scan_offload_profile_match_v1) *
2312                         max_profiles;
2313         }
2314
2315         len = iwl_rx_packet_payload_len(cmd.resp_pkt);
2316         if (len < query_len) {
2317                 IWL_ERR(mvm, "Invalid scan offload profiles query response!\n");
2318                 ret = -EIO;
2319                 goto out_free_resp;
2320         }
2321
2322         query = (void *)cmd.resp_pkt->data;
2323
2324         results->matched_profiles = le32_to_cpu(query->matched_profiles);
2325         memcpy(results->matches, query->matches, matches_len);
2326
2327 #ifdef CONFIG_IWLWIFI_DEBUGFS
2328         mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done);
2329 #endif
2330
2331 out_free_resp:
2332         iwl_free_resp(&cmd);
2333         return ret;
2334 }
2335
2336 static int iwl_mvm_query_num_match_chans(struct iwl_mvm *mvm,
2337                                          struct iwl_mvm_nd_results *results,
2338                                          int idx)
2339 {
2340         int n_chans = 0, i;
2341
2342         if (fw_has_api(&mvm->fw->ucode_capa,
2343                        IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2344                 struct iwl_scan_offload_profile_match *matches =
2345                         (void *)results->matches;
2346
2347                 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; i++)
2348                         n_chans += hweight8(matches[idx].matching_channels[i]);
2349         } else {
2350                 struct iwl_scan_offload_profile_match_v1 *matches =
2351                         (void *)results->matches;
2352
2353                 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1; i++)
2354                         n_chans += hweight8(matches[idx].matching_channels[i]);
2355         }
2356
2357         return n_chans;
2358 }
2359
2360 static void iwl_mvm_query_set_freqs(struct iwl_mvm *mvm,
2361                                     struct iwl_mvm_nd_results *results,
2362                                     struct cfg80211_wowlan_nd_match *match,
2363                                     int idx)
2364 {
2365         int i;
2366
2367         if (fw_has_api(&mvm->fw->ucode_capa,
2368                        IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2369                 struct iwl_scan_offload_profile_match *matches =
2370                          (void *)results->matches;
2371
2372                 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; i++)
2373                         if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
2374                                 match->channels[match->n_channels++] =
2375                                         mvm->nd_channels[i]->center_freq;
2376         } else {
2377                 struct iwl_scan_offload_profile_match_v1 *matches =
2378                          (void *)results->matches;
2379
2380                 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1 * 8; i++)
2381                         if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
2382                                 match->channels[match->n_channels++] =
2383                                         mvm->nd_channels[i]->center_freq;
2384         }
2385 }
2386
2387 /**
2388  * enum iwl_d3_notif - d3 notifications
2389  * @IWL_D3_NOTIF_WOWLAN_INFO: WOWLAN_INFO_NOTIF was received
2390  * @IWL_D3_NOTIF_WOWLAN_WAKE_PKT: WOWLAN_WAKE_PKT_NOTIF was received
2391  * @IWL_D3_NOTIF_PROT_OFFLOAD: PROT_OFFLOAD_NOTIF was received
2392  * @IWL_D3_ND_MATCH_INFO: OFFLOAD_MATCH_INFO_NOTIF was received
2393  * @IWL_D3_NOTIF_D3_END_NOTIF: D3_END_NOTIF was received
2394  */
2395 enum iwl_d3_notif {
2396         IWL_D3_NOTIF_WOWLAN_INFO =      BIT(0),
2397         IWL_D3_NOTIF_WOWLAN_WAKE_PKT =  BIT(1),
2398         IWL_D3_NOTIF_PROT_OFFLOAD =     BIT(2),
2399         IWL_D3_ND_MATCH_INFO      =     BIT(3),
2400         IWL_D3_NOTIF_D3_END_NOTIF =     BIT(4)
2401 };
2402
2403 /* manage d3 resume data */
2404 struct iwl_d3_data {
2405         struct iwl_wowlan_status_data *status;
2406         bool test;
2407         u32 d3_end_flags;
2408         u32 notif_expected;     /* bitmap - see &enum iwl_d3_notif */
2409         u32 notif_received;     /* bitmap - see &enum iwl_d3_notif */
2410         struct iwl_mvm_nd_results *nd_results;
2411         bool nd_results_valid;
2412 };
2413
2414 static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm,
2415                                             struct ieee80211_vif *vif,
2416                                             struct iwl_d3_data *d3_data)
2417 {
2418         struct cfg80211_wowlan_nd_info *net_detect = NULL;
2419         struct cfg80211_wowlan_wakeup wakeup = {
2420                 .pattern_idx = -1,
2421         };
2422         struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
2423         unsigned long matched_profiles;
2424         u32 reasons = 0;
2425         int i, n_matches, ret;
2426
2427         if (WARN_ON(!d3_data || !d3_data->status))
2428                 goto out;
2429
2430         reasons = d3_data->status->wakeup_reasons;
2431
2432         if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
2433                 wakeup.rfkill_release = true;
2434
2435         if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS)
2436                 goto out;
2437
2438         if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
2439                                      WOWLAN_INFO_NOTIFICATION, 0)) {
2440                 IWL_INFO(mvm, "Query FW for ND results\n");
2441                 ret = iwl_mvm_netdetect_query_results(mvm, d3_data->nd_results);
2442
2443         } else {
2444                 IWL_INFO(mvm, "Notification based ND results\n");
2445                 ret = d3_data->nd_results_valid ? 0 : -1;
2446         }
2447
2448         if (ret || !d3_data->nd_results->matched_profiles) {
2449                 wakeup_report = NULL;
2450                 goto out;
2451         }
2452
2453         matched_profiles = d3_data->nd_results->matched_profiles;
2454         if (mvm->n_nd_match_sets) {
2455                 n_matches = hweight_long(matched_profiles);
2456         } else {
2457                 IWL_ERR(mvm, "no net detect match information available\n");
2458                 n_matches = 0;
2459         }
2460
2461         net_detect = kzalloc(struct_size(net_detect, matches, n_matches),
2462                              GFP_KERNEL);
2463         if (!net_detect || !n_matches)
2464                 goto out_report_nd;
2465
2466         for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) {
2467                 struct cfg80211_wowlan_nd_match *match;
2468                 int idx, n_channels = 0;
2469
2470                 n_channels = iwl_mvm_query_num_match_chans(mvm,
2471                                                            d3_data->nd_results,
2472                                                            i);
2473
2474                 match = kzalloc(struct_size(match, channels, n_channels),
2475                                 GFP_KERNEL);
2476                 if (!match)
2477                         goto out_report_nd;
2478
2479                 net_detect->matches[net_detect->n_matches++] = match;
2480
2481                 /* We inverted the order of the SSIDs in the scan
2482                  * request, so invert the index here.
2483                  */
2484                 idx = mvm->n_nd_match_sets - i - 1;
2485                 match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len;
2486                 memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid,
2487                        match->ssid.ssid_len);
2488
2489                 if (mvm->n_nd_channels < n_channels)
2490                         continue;
2491
2492                 iwl_mvm_query_set_freqs(mvm, d3_data->nd_results, match, i);
2493         }
2494
2495 out_report_nd:
2496         wakeup.net_detect = net_detect;
2497 out:
2498         iwl_mvm_free_nd(mvm);
2499
2500         mutex_unlock(&mvm->mutex);
2501         ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
2502
2503         if (net_detect) {
2504                 for (i = 0; i < net_detect->n_matches; i++)
2505                         kfree(net_detect->matches[i]);
2506                 kfree(net_detect);
2507         }
2508 }
2509
2510 static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac,
2511                                        struct ieee80211_vif *vif)
2512 {
2513         /* skip the one we keep connection on */
2514         if (data == vif)
2515                 return;
2516
2517         if (vif->type == NL80211_IFTYPE_STATION)
2518                 ieee80211_resume_disconnect(vif);
2519 }
2520
2521 static bool iwl_mvm_rt_status(struct iwl_trans *trans, u32 base, u32 *err_id)
2522 {
2523         struct error_table_start {
2524                 /* cf. struct iwl_error_event_table */
2525                 u32 valid;
2526                 __le32 err_id;
2527         } err_info;
2528
2529         if (!base)
2530                 return false;
2531
2532         iwl_trans_read_mem_bytes(trans, base,
2533                                  &err_info, sizeof(err_info));
2534         if (err_info.valid && err_id)
2535                 *err_id = le32_to_cpu(err_info.err_id);
2536
2537         return !!err_info.valid;
2538 }
2539
2540 static bool iwl_mvm_check_rt_status(struct iwl_mvm *mvm,
2541                                    struct ieee80211_vif *vif)
2542 {
2543         u32 err_id;
2544
2545         /* check for lmac1 error */
2546         if (iwl_mvm_rt_status(mvm->trans,
2547                               mvm->trans->dbg.lmac_error_event_table[0],
2548                               &err_id)) {
2549                 if (err_id == RF_KILL_INDICATOR_FOR_WOWLAN) {
2550                         struct cfg80211_wowlan_wakeup wakeup = {
2551                                 .rfkill_release = true,
2552                         };
2553                         ieee80211_report_wowlan_wakeup(vif, &wakeup,
2554                                                        GFP_KERNEL);
2555                 }
2556                 return true;
2557         }
2558
2559         /* check if we have lmac2 set and check for error */
2560         if (iwl_mvm_rt_status(mvm->trans,
2561                               mvm->trans->dbg.lmac_error_event_table[1], NULL))
2562                 return true;
2563
2564         /* check for umac error */
2565         if (iwl_mvm_rt_status(mvm->trans,
2566                               mvm->trans->dbg.umac_error_event_table, NULL))
2567                 return true;
2568
2569         return false;
2570 }
2571
2572 /*
2573  * This function assumes:
2574  *      1. The mutex is already held.
2575  *      2. The callee functions unlock the mutex.
2576  */
2577 static bool
2578 iwl_mvm_choose_query_wakeup_reasons(struct iwl_mvm *mvm,
2579                                     struct ieee80211_vif *vif,
2580                                     struct iwl_d3_data *d3_data)
2581 {
2582         lockdep_assert_held(&mvm->mutex);
2583
2584         /* if FW uses status notification, status shouldn't be NULL here */
2585         if (!d3_data->status) {
2586                 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2587                 u8 sta_id = mvm->net_detect ? IWL_MVM_INVALID_STA :
2588                                               mvmvif->deflink.ap_sta_id;
2589
2590                 d3_data->status = iwl_mvm_send_wowlan_get_status(mvm, sta_id);
2591         }
2592
2593         if (mvm->net_detect) {
2594                 iwl_mvm_query_netdetect_reasons(mvm, vif, d3_data);
2595         } else {
2596                 bool keep = iwl_mvm_query_wakeup_reasons(mvm, vif,
2597                                                          d3_data->status);
2598
2599 #ifdef CONFIG_IWLWIFI_DEBUGFS
2600                 if (keep)
2601                         mvm->keep_vif = vif;
2602 #endif
2603
2604                 return keep;
2605         }
2606         return false;
2607 }
2608
2609 #define IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT (IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET | \
2610                                                  IWL_WOWLAN_WAKEUP_BY_PATTERN | \
2611                                                  IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN |\
2612                                                  IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN_WILDCARD |\
2613                                                  IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN |\
2614                                                  IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN_WILDCARD)
2615
2616 static int iwl_mvm_wowlan_store_wake_pkt(struct iwl_mvm *mvm,
2617                                          struct iwl_wowlan_wake_pkt_notif *notif,
2618                                          struct iwl_wowlan_status_data *status,
2619                                          u32 len)
2620 {
2621         u32 data_size, packet_len = le32_to_cpu(notif->wake_packet_length);
2622
2623         if (len < sizeof(*notif)) {
2624                 IWL_ERR(mvm, "Invalid WoWLAN wake packet notification!\n");
2625                 return -EIO;
2626         }
2627
2628         if (WARN_ON(!status)) {
2629                 IWL_ERR(mvm, "Got wake packet notification but wowlan status data is NULL\n");
2630                 return -EIO;
2631         }
2632
2633         if (WARN_ON(!(status->wakeup_reasons &
2634                       IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT))) {
2635                 IWL_ERR(mvm, "Got wakeup packet but wakeup reason is %x\n",
2636                         status->wakeup_reasons);
2637                 return -EIO;
2638         }
2639
2640         data_size = len - offsetof(struct iwl_wowlan_wake_pkt_notif, wake_packet);
2641
2642         /* data_size got the padding from the notification, remove it. */
2643         if (packet_len < data_size)
2644                 data_size = packet_len;
2645
2646         status->wake_packet = kmemdup(notif->wake_packet, data_size,
2647                                       GFP_ATOMIC);
2648
2649         if (!status->wake_packet)
2650                 return -ENOMEM;
2651
2652         status->wake_packet_length = packet_len;
2653         status->wake_packet_bufsize = data_size;
2654
2655         return 0;
2656 }
2657
2658 static void iwl_mvm_nd_match_info_handler(struct iwl_mvm *mvm,
2659                                           struct iwl_d3_data *d3_data,
2660                                           struct iwl_scan_offload_match_info *notif,
2661                                           u32 len)
2662 {
2663         struct iwl_wowlan_status_data *status = d3_data->status;
2664         struct ieee80211_vif *vif = iwl_mvm_get_bss_vif(mvm);
2665         struct iwl_mvm_nd_results *results = d3_data->nd_results;
2666         size_t i, matches_len = sizeof(struct iwl_scan_offload_profile_match) *
2667                 iwl_umac_scan_get_max_profiles(mvm->fw);
2668
2669         if (IS_ERR_OR_NULL(vif))
2670                 return;
2671
2672         if (len < sizeof(struct iwl_scan_offload_match_info)) {
2673                 IWL_ERR(mvm, "Invalid scan match info notification\n");
2674                 return;
2675         }
2676
2677         if (!mvm->net_detect) {
2678                 IWL_ERR(mvm, "Unexpected scan match info notification\n");
2679                 return;
2680         }
2681
2682         if (!status || status->wakeup_reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
2683                 IWL_ERR(mvm,
2684                         "Ignore scan match info notification: no reason\n");
2685                 return;
2686         }
2687
2688 #ifdef CONFIG_IWLWIFI_DEBUGFS
2689         mvm->last_netdetect_scans = le32_to_cpu(notif->n_scans_done);
2690 #endif
2691
2692         results->matched_profiles = le32_to_cpu(notif->matched_profiles);
2693         IWL_INFO(mvm, "number of matched profiles=%u\n",
2694                  results->matched_profiles);
2695
2696         if (results->matched_profiles) {
2697                 memcpy(results->matches, notif->matches, matches_len);
2698                 d3_data->nd_results_valid = TRUE;
2699         }
2700
2701         /* no scan should be active at this point */
2702         mvm->scan_status = 0;
2703         for (i = 0; i < mvm->max_scans; i++)
2704                 mvm->scan_uid_status[i] = 0;
2705 }
2706
2707 static bool iwl_mvm_wait_d3_notif(struct iwl_notif_wait_data *notif_wait,
2708                                   struct iwl_rx_packet *pkt, void *data)
2709 {
2710         struct iwl_mvm *mvm =
2711                 container_of(notif_wait, struct iwl_mvm, notif_wait);
2712         struct iwl_d3_data *d3_data = data;
2713         u32 len;
2714         int ret;
2715         int wowlan_info_ver = iwl_fw_lookup_notif_ver(mvm->fw,
2716                                                       PROT_OFFLOAD_GROUP,
2717                                                       WOWLAN_INFO_NOTIFICATION,
2718                                                       IWL_FW_CMD_VER_UNKNOWN);
2719
2720
2721         switch (WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) {
2722         case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION): {
2723                 struct iwl_wowlan_info_notif *notif;
2724
2725                 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_INFO) {
2726                         /* We might get two notifications due to dual bss */
2727                         IWL_DEBUG_WOWLAN(mvm,
2728                                          "Got additional wowlan info notification\n");
2729                         break;
2730                 }
2731
2732                 if (wowlan_info_ver < 2) {
2733                         struct iwl_wowlan_info_notif_v1 *notif_v1 = (void *)pkt->data;
2734
2735                         notif = kmemdup(notif_v1, sizeof(*notif), GFP_ATOMIC);
2736                         if (!notif)
2737                                 return false;
2738
2739                         notif->tid_tear_down = notif_v1->tid_tear_down;
2740                         notif->station_id = notif_v1->station_id;
2741                         memset_after(notif, 0, station_id);
2742                 } else {
2743                         notif = (void *)pkt->data;
2744                 }
2745
2746                 d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_INFO;
2747                 len = iwl_rx_packet_payload_len(pkt);
2748                 iwl_mvm_parse_wowlan_info_notif(mvm, notif, d3_data->status,
2749                                                 len);
2750
2751                 if (wowlan_info_ver < 2)
2752                         kfree(notif);
2753
2754                 if (d3_data->status &&
2755                     d3_data->status->wakeup_reasons & IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT)
2756                         /* We are supposed to get also wake packet notif */
2757                         d3_data->notif_expected |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT;
2758
2759                 break;
2760         }
2761         case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION): {
2762                 struct iwl_wowlan_wake_pkt_notif *notif = (void *)pkt->data;
2763
2764                 if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_WAKE_PKT) {
2765                         /* We shouldn't get two wake packet notifications */
2766                         IWL_ERR(mvm,
2767                                 "Got additional wowlan wake packet notification\n");
2768                 } else {
2769                         d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT;
2770                         len =  iwl_rx_packet_payload_len(pkt);
2771                         ret = iwl_mvm_wowlan_store_wake_pkt(mvm, notif,
2772                                                             d3_data->status,
2773                                                             len);
2774                         if (ret)
2775                                 IWL_ERR(mvm,
2776                                         "Can't parse WOWLAN_WAKE_PKT_NOTIFICATION\n");
2777                 }
2778
2779                 break;
2780         }
2781         case WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF): {
2782                 struct iwl_scan_offload_match_info *notif = (void *)pkt->data;
2783
2784                 if (d3_data->notif_received & IWL_D3_ND_MATCH_INFO) {
2785                         IWL_ERR(mvm,
2786                                 "Got additional netdetect match info\n");
2787                         break;
2788                 }
2789
2790                 d3_data->notif_received |= IWL_D3_ND_MATCH_INFO;
2791
2792                 /* explicitly set this in the 'expected' as well */
2793                 d3_data->notif_expected |= IWL_D3_ND_MATCH_INFO;
2794
2795                 len = iwl_rx_packet_payload_len(pkt);
2796                 iwl_mvm_nd_match_info_handler(mvm, d3_data, notif, len);
2797                 break;
2798         }
2799         case WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION): {
2800                 struct iwl_mvm_d3_end_notif *notif = (void *)pkt->data;
2801
2802                 d3_data->d3_end_flags = __le32_to_cpu(notif->flags);
2803                 d3_data->notif_received |= IWL_D3_NOTIF_D3_END_NOTIF;
2804
2805                 break;
2806         }
2807         default:
2808                 WARN_ON(1);
2809         }
2810
2811         return d3_data->notif_received == d3_data->notif_expected;
2812 }
2813
2814 static int iwl_mvm_resume_firmware(struct iwl_mvm *mvm, bool test)
2815 {
2816         int ret;
2817         enum iwl_d3_status d3_status;
2818         struct iwl_host_cmd cmd = {
2819                         .id = D0I3_END_CMD,
2820                         .flags = CMD_WANT_SKB | CMD_SEND_IN_D3,
2821                 };
2822         bool reset = fw_has_capa(&mvm->fw->ucode_capa,
2823                                  IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2824
2825         ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, !reset);
2826         if (ret)
2827                 return ret;
2828
2829         if (d3_status != IWL_D3_STATUS_ALIVE) {
2830                 IWL_INFO(mvm, "Device was reset during suspend\n");
2831                 return -ENOENT;
2832         }
2833
2834         /*
2835          * We should trigger resume flow using command only for 22000 family
2836          * AX210 and above don't need the command since they have
2837          * the doorbell interrupt.
2838          */
2839         if (mvm->trans->trans_cfg->device_family <= IWL_DEVICE_FAMILY_22000 &&
2840             fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_D0I3_END_FIRST)) {
2841                 ret = iwl_mvm_send_cmd(mvm, &cmd);
2842                 if (ret < 0)
2843                         IWL_ERR(mvm, "Failed to send D0I3_END_CMD first (%d)\n",
2844                                 ret);
2845         }
2846
2847         return ret;
2848 }
2849
2850 #define IWL_MVM_D3_NOTIF_TIMEOUT (HZ / 5)
2851
2852 static int iwl_mvm_d3_notif_wait(struct iwl_mvm *mvm,
2853                                  struct iwl_d3_data *d3_data)
2854 {
2855         static const u16 d3_resume_notif[] = {
2856                 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION),
2857                 WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION),
2858                 WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF),
2859                 WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION)
2860         };
2861         struct iwl_notification_wait wait_d3_notif;
2862         int ret;
2863
2864         iwl_init_notification_wait(&mvm->notif_wait, &wait_d3_notif,
2865                                    d3_resume_notif, ARRAY_SIZE(d3_resume_notif),
2866                                    iwl_mvm_wait_d3_notif, d3_data);
2867
2868         ret = iwl_mvm_resume_firmware(mvm, d3_data->test);
2869         if (ret) {
2870                 iwl_remove_notification(&mvm->notif_wait, &wait_d3_notif);
2871                 return ret;
2872         }
2873
2874         return iwl_wait_notification(&mvm->notif_wait, &wait_d3_notif,
2875                                      IWL_MVM_D3_NOTIF_TIMEOUT);
2876 }
2877
2878 static inline bool iwl_mvm_d3_resume_notif_based(struct iwl_mvm *mvm)
2879 {
2880         return iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
2881                                        WOWLAN_INFO_NOTIFICATION, 0) &&
2882                 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
2883                                         WOWLAN_WAKE_PKT_NOTIFICATION, 0) &&
2884                 iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
2885                                         D3_END_NOTIFICATION, 0);
2886 }
2887
2888 static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test)
2889 {
2890         struct ieee80211_vif *vif = NULL;
2891         int ret = 1;
2892         struct iwl_mvm_nd_results results = {};
2893         struct iwl_d3_data d3_data = {
2894                 .test = test,
2895                 .notif_expected =
2896                         IWL_D3_NOTIF_WOWLAN_INFO |
2897                         IWL_D3_NOTIF_D3_END_NOTIF,
2898                 .nd_results_valid = false,
2899                 .nd_results = &results,
2900         };
2901         bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
2902                                          IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2903         bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa,
2904                                       IWL_UCODE_TLV_CAPA_D0I3_END_FIRST);
2905         bool resume_notif_based = iwl_mvm_d3_resume_notif_based(mvm);
2906         bool keep = false;
2907
2908         mutex_lock(&mvm->mutex);
2909
2910         mvm->last_reset_or_resume_time_jiffies = jiffies;
2911
2912         /* get the BSS vif pointer again */
2913         vif = iwl_mvm_get_bss_vif(mvm);
2914         if (IS_ERR_OR_NULL(vif))
2915                 goto err;
2916
2917         iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
2918
2919         if (iwl_mvm_check_rt_status(mvm, vif)) {
2920                 set_bit(STATUS_FW_ERROR, &mvm->trans->status);
2921                 iwl_mvm_dump_nic_error_log(mvm);
2922                 iwl_dbg_tlv_time_point(&mvm->fwrt,
2923                                        IWL_FW_INI_TIME_POINT_FW_ASSERT, NULL);
2924                 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert,
2925                                         false, 0);
2926                 ret = 1;
2927                 goto err;
2928         }
2929
2930         if (resume_notif_based) {
2931                 d3_data.status = kzalloc(sizeof(*d3_data.status), GFP_KERNEL);
2932                 if (!d3_data.status) {
2933                         IWL_ERR(mvm, "Failed to allocate wowlan status\n");
2934                         ret = -ENOMEM;
2935                         goto err;
2936                 }
2937
2938                 ret = iwl_mvm_d3_notif_wait(mvm, &d3_data);
2939                 if (ret)
2940                         goto err;
2941         } else {
2942                 ret = iwl_mvm_resume_firmware(mvm, test);
2943                 if (ret < 0)
2944                         goto err;
2945         }
2946
2947         /* after the successful handshake, we're out of D3 */
2948         mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
2949
2950         /* when reset is required we can't send these following commands */
2951         if (d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)
2952                 goto query_wakeup_reasons;
2953
2954         /*
2955          * Query the current location and source from the D3 firmware so we
2956          * can play it back when we re-intiailize the D0 firmware
2957          */
2958         iwl_mvm_update_changed_regdom(mvm);
2959
2960         /* Re-configure PPAG settings */
2961         iwl_mvm_ppag_send_cmd(mvm);
2962
2963         if (!unified_image)
2964                 /*  Re-configure default SAR profile */
2965                 iwl_mvm_sar_select_profile(mvm, 1, 1);
2966
2967         if (mvm->net_detect && unified_image) {
2968                 /* If this is a non-unified image, we restart the FW,
2969                  * so no need to stop the netdetect scan.  If that
2970                  * fails, continue and try to get the wake-up reasons,
2971                  * but trigger a HW restart by keeping a failure code
2972                  * in ret.
2973                  */
2974                 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT,
2975                                         false);
2976         }
2977
2978 query_wakeup_reasons:
2979         keep = iwl_mvm_choose_query_wakeup_reasons(mvm, vif, &d3_data);
2980         /* has unlocked the mutex, so skip that */
2981         goto out;
2982
2983 err:
2984         mutex_unlock(&mvm->mutex);
2985 out:
2986         if (d3_data.status)
2987                 kfree(d3_data.status->wake_packet);
2988         kfree(d3_data.status);
2989         iwl_mvm_free_nd(mvm);
2990
2991         if (!d3_data.test && !mvm->net_detect)
2992                 ieee80211_iterate_active_interfaces_mtx(mvm->hw,
2993                                                         IEEE80211_IFACE_ITER_NORMAL,
2994                                                         iwl_mvm_d3_disconnect_iter,
2995                                                         keep ? vif : NULL);
2996
2997         clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
2998
2999         /* no need to reset the device in unified images, if successful */
3000         if (unified_image && !ret) {
3001                 /* nothing else to do if we already sent D0I3_END_CMD */
3002                 if (d0i3_first)
3003                         return 0;
3004
3005                 if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
3006                                              D3_END_NOTIFICATION, 0)) {
3007                         ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL);
3008                         if (!ret)
3009                                 return 0;
3010                 } else if (!(d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)) {
3011                         return 0;
3012                 }
3013         }
3014
3015         /*
3016          * Reconfigure the device in one of the following cases:
3017          * 1. We are not using a unified image
3018          * 2. We are using a unified image but had an error while exiting D3
3019          */
3020         set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
3021
3022         /* regardless of what happened, we're now out of D3 */
3023         mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
3024
3025         return 1;
3026 }
3027
3028 int iwl_mvm_resume(struct ieee80211_hw *hw)
3029 {
3030         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3031         int ret;
3032
3033         ret = __iwl_mvm_resume(mvm, false);
3034
3035         iwl_mvm_resume_tcm(mvm);
3036
3037         iwl_fw_runtime_resume(&mvm->fwrt);
3038
3039         return ret;
3040 }
3041
3042 void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled)
3043 {
3044         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3045
3046         device_set_wakeup_enable(mvm->trans->dev, enabled);
3047 }
3048
3049 #ifdef CONFIG_IWLWIFI_DEBUGFS
3050 static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file)
3051 {
3052         struct iwl_mvm *mvm = inode->i_private;
3053         int err;
3054
3055         if (mvm->d3_test_active)
3056                 return -EBUSY;
3057
3058         file->private_data = inode->i_private;
3059
3060         iwl_mvm_pause_tcm(mvm, true);
3061
3062         iwl_fw_runtime_suspend(&mvm->fwrt);
3063
3064         /* start pseudo D3 */
3065         rtnl_lock();
3066         wiphy_lock(mvm->hw->wiphy);
3067         err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true);
3068         wiphy_unlock(mvm->hw->wiphy);
3069         rtnl_unlock();
3070         if (err > 0)
3071                 err = -EINVAL;
3072         if (err)
3073                 return err;
3074
3075         mvm->d3_test_active = true;
3076         mvm->keep_vif = NULL;
3077         return 0;
3078 }
3079
3080 static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf,
3081                                     size_t count, loff_t *ppos)
3082 {
3083         struct iwl_mvm *mvm = file->private_data;
3084         u32 pme_asserted;
3085
3086         while (true) {
3087                 /* read pme_ptr if available */
3088                 if (mvm->d3_test_pme_ptr) {
3089                         pme_asserted = iwl_trans_read_mem32(mvm->trans,
3090                                                 mvm->d3_test_pme_ptr);
3091                         if (pme_asserted)
3092                                 break;
3093                 }
3094
3095                 if (msleep_interruptible(100))
3096                         break;
3097         }
3098
3099         return 0;
3100 }
3101
3102 static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac,
3103                                               struct ieee80211_vif *vif)
3104 {
3105         /* skip the one we keep connection on */
3106         if (_data == vif)
3107                 return;
3108
3109         if (vif->type == NL80211_IFTYPE_STATION)
3110                 ieee80211_connection_loss(vif);
3111 }
3112
3113 static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file)
3114 {
3115         struct iwl_mvm *mvm = inode->i_private;
3116         bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
3117                                          IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
3118
3119         mvm->d3_test_active = false;
3120
3121         iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
3122
3123         rtnl_lock();
3124         wiphy_lock(mvm->hw->wiphy);
3125         __iwl_mvm_resume(mvm, true);
3126         wiphy_unlock(mvm->hw->wiphy);
3127         rtnl_unlock();
3128
3129         iwl_mvm_resume_tcm(mvm);
3130
3131         iwl_fw_runtime_resume(&mvm->fwrt);
3132
3133         iwl_abort_notification_waits(&mvm->notif_wait);
3134         if (!unified_image) {
3135                 int remaining_time = 10;
3136
3137                 ieee80211_restart_hw(mvm->hw);
3138
3139                 /* wait for restart and disconnect all interfaces */
3140                 while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
3141                        remaining_time > 0) {
3142                         remaining_time--;
3143                         msleep(1000);
3144                 }
3145
3146                 if (remaining_time == 0)
3147                         IWL_ERR(mvm, "Timed out waiting for HW restart!\n");
3148         }
3149
3150         ieee80211_iterate_active_interfaces_atomic(
3151                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
3152                 iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif);
3153
3154         return 0;
3155 }
3156
3157 const struct file_operations iwl_dbgfs_d3_test_ops = {
3158         .llseek = no_llseek,
3159         .open = iwl_mvm_d3_test_open,
3160         .read = iwl_mvm_d3_test_read,
3161         .release = iwl_mvm_d3_test_release,
3162 };
3163 #endif