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, 2018-2021 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((__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
 164                 /* don't upload key again */
 165                 return;
 166         }
 167         default:
 168                 data->error = true;
 169                 return;
 170         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 171         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 172                 return;
 173         case WLAN_CIPHER_SUITE_AES_CMAC:
 174                 /*
 175                  * Ignore CMAC keys -- the WoWLAN firmware doesn't support them
 176                  * but we also shouldn't abort suspend due to that. It does have
 177                  * support for the IGTK key renewal, but doesn't really use the
 178                  * IGTK for anything. This means we could spuriously wake up or
 179                  * be deauthenticated, but that was considered acceptable.
 180                  */
 181                 return;
 182         case WLAN_CIPHER_SUITE_TKIP:
 183         case WLAN_CIPHER_SUITE_CCMP:
 184         case WLAN_CIPHER_SUITE_GCMP:
 185         case WLAN_CIPHER_SUITE_GCMP_256:
 186                 break;
 187         }
 188
 189         mutex_lock(&mvm->mutex);
 190         /*
 191          * The D3 firmware hardcodes the key offset 0 as the key it
 192          * uses to transmit packets to the AP, i.e. the PTK.
 193          */
 194         if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
 195                 mvm->ptk_ivlen = key->iv_len;
 196                 mvm->ptk_icvlen = key->icv_len;
 197                 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 0);
 198         } else {
 199                 /*
 200                  * firmware only supports TSC/RSC for a single key,
 201                  * so if there are multiple keep overwriting them
 202                  * with new ones -- this relies on mac80211 doing
 203                  * list_add_tail().
 204                  */
 205                 mvm->gtk_ivlen = key->iv_len;
 206                 mvm->gtk_icvlen = key->icv_len;
 207                 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 1);
 208         }
 209         mutex_unlock(&mvm->mutex);
 210         data->error = ret != 0;
 211 }
 212
 213 struct wowlan_key_rsc_tsc_data {
 214         struct iwl_wowlan_rsc_tsc_params_cmd_v4 *rsc_tsc;
 215         bool have_rsc_tsc;
 216 };
 217
 218 static void iwl_mvm_wowlan_get_rsc_tsc_data(struct ieee80211_hw *hw,
 219                                             struct ieee80211_vif *vif,
 220                                             struct ieee80211_sta *sta,
 221                                             struct ieee80211_key_conf *key,
 222                                             void *_data)
 223 {
 224         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 225         struct wowlan_key_rsc_tsc_data *data = _data;
 226         struct aes_sc *aes_sc;
 227         struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
 228         struct ieee80211_key_seq seq;
 229         int i;
 230
 231         switch (key->cipher) {
 232         default:
 233                 break;
 234         case WLAN_CIPHER_SUITE_TKIP:
 235                 if (sta) {
 236                         u64 pn64;
 237
 238                         tkip_sc =
 239                            data->rsc_tsc->params.all_tsc_rsc.tkip.unicast_rsc;
 240                         tkip_tx_sc =
 241                                 &data->rsc_tsc->params.all_tsc_rsc.tkip.tsc;
 242
 243                         pn64 = atomic64_read(&key->tx_pn);
 244                         tkip_tx_sc->iv16 = cpu_to_le16(TKIP_PN_TO_IV16(pn64));
 245                         tkip_tx_sc->iv32 = cpu_to_le32(TKIP_PN_TO_IV32(pn64));
 246                 } else {
 247                         tkip_sc =
 248                           data->rsc_tsc->params.all_tsc_rsc.tkip.multicast_rsc;
 249                 }
 250
 251                 /*
 252                  * For non-QoS this relies on the fact that both the uCode and
 253                  * mac80211 use TID 0 (as they need to to avoid replay attacks)
 254                  * for checking the IV in the frames.
 255                  */
 256                 for (i = 0; i < IWL_NUM_RSC; i++) {
 257                         ieee80211_get_key_rx_seq(key, i, &seq);
 258                         tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
 259                         tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
 260                 }
 261
 262                 data->have_rsc_tsc = true;
 263                 break;
 264         case WLAN_CIPHER_SUITE_CCMP:
 265         case WLAN_CIPHER_SUITE_GCMP:
 266         case WLAN_CIPHER_SUITE_GCMP_256:
 267                 if (sta) {
 268                         struct aes_sc *aes_tx_sc;
 269                         u64 pn64;
 270
 271                         aes_sc =
 272                            data->rsc_tsc->params.all_tsc_rsc.aes.unicast_rsc;
 273                         aes_tx_sc =
 274                                 &data->rsc_tsc->params.all_tsc_rsc.aes.tsc;
 275
 276                         pn64 = atomic64_read(&key->tx_pn);
 277                         aes_tx_sc->pn = cpu_to_le64(pn64);
 278                 } else {
 279                         aes_sc =
 280                            data->rsc_tsc->params.all_tsc_rsc.aes.multicast_rsc;
 281                 }
 282
 283                 /*
 284                  * For non-QoS this relies on the fact that both the uCode and
 285                  * mac80211/our RX code use TID 0 for checking the PN.
 286                  */
 287                 if (sta && iwl_mvm_has_new_rx_api(mvm)) {
 288                         struct iwl_mvm_sta *mvmsta;
 289                         struct iwl_mvm_key_pn *ptk_pn;
 290                         const u8 *pn;
 291
 292                         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 293                         rcu_read_lock();
 294                         ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]);
 295                         if (WARN_ON(!ptk_pn)) {
 296                                 rcu_read_unlock();
 297                                 break;
 298                         }
 299
 300                         for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
 301                                 pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i,
 302                                                 mvm->trans->num_rx_queues);
 303                                 aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
 304                                                            ((u64)pn[4] << 8) |
 305                                                            ((u64)pn[3] << 16) |
 306                                                            ((u64)pn[2] << 24) |
 307                                                            ((u64)pn[1] << 32) |
 308                                                            ((u64)pn[0] << 40));
 309                         }
 310
 311                         rcu_read_unlock();
 312                 } else {
 313                         for (i = 0; i < IWL_NUM_RSC; i++) {
 314                                 u8 *pn = seq.ccmp.pn;
 315
 316                                 ieee80211_get_key_rx_seq(key, i, &seq);
 317                                 aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
 318                                                            ((u64)pn[4] << 8) |
 319                                                            ((u64)pn[3] << 16) |
 320                                                            ((u64)pn[2] << 24) |
 321                                                            ((u64)pn[1] << 32) |
 322                                                            ((u64)pn[0] << 40));
 323                         }
 324                 }
 325                 data->have_rsc_tsc = true;
 326                 break;
 327         }
 328 }
 329
 330 struct wowlan_key_rsc_v5_data {
 331         struct iwl_wowlan_rsc_tsc_params_cmd *rsc;
 332         bool have_rsc;
 333         int gtks;
 334         int gtk_ids[4];
 335 };
 336
 337 static void iwl_mvm_wowlan_get_rsc_v5_data(struct ieee80211_hw *hw,
 338                                            struct ieee80211_vif *vif,
 339                                            struct ieee80211_sta *sta,
 340                                            struct ieee80211_key_conf *key,
 341                                            void *_data)
 342 {
 343         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 344         struct wowlan_key_rsc_v5_data *data = _data;
 345         struct ieee80211_key_seq seq;
 346         __le64 *rsc;
 347         int i;
 348
 349         /* only for ciphers that can be PTK/GTK */
 350         switch (key->cipher) {
 351         default:
 352                 return;
 353         case WLAN_CIPHER_SUITE_TKIP:
 354         case WLAN_CIPHER_SUITE_CCMP:
 355         case WLAN_CIPHER_SUITE_GCMP:
 356         case WLAN_CIPHER_SUITE_GCMP_256:
 357                 break;
 358         }
 359
 360         if (sta) {
 361                 rsc = data->rsc->ucast_rsc;
 362         } else {
 363                 if (WARN_ON(data->gtks > ARRAY_SIZE(data->gtk_ids)))
 364                         return;
 365                 data->gtk_ids[data->gtks] = key->keyidx;
 366                 rsc = data->rsc->mcast_rsc[data->gtks % 2];
 367                 if (WARN_ON(key->keyidx >
 368                                 ARRAY_SIZE(data->rsc->mcast_key_id_map)))
 369                         return;
 370                 data->rsc->mcast_key_id_map[key->keyidx] = data->gtks % 2;
 371                 if (data->gtks >= 2) {
 372                         int prev = data->gtks - 2;
 373                         int prev_idx = data->gtk_ids[prev];
 374
 375                         data->rsc->mcast_key_id_map[prev_idx] =
 376                                 IWL_MCAST_KEY_MAP_INVALID;
 377                 }
 378                 data->gtks++;
 379         }
 380
 381         switch (key->cipher) {
 382         default:
 383                 WARN_ON(1);
 384                 break;
 385         case WLAN_CIPHER_SUITE_TKIP:
 386
 387                 /*
 388                  * For non-QoS this relies on the fact that both the uCode and
 389                  * mac80211 use TID 0 (as they need to to avoid replay attacks)
 390                  * for checking the IV in the frames.
 391                  */
 392                 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
 393                         ieee80211_get_key_rx_seq(key, i, &seq);
 394
 395                         rsc[i] = cpu_to_le64(((u64)seq.tkip.iv32 << 16) |
 396                                              seq.tkip.iv16);
 397                 }
 398
 399                 data->have_rsc = true;
 400                 break;
 401         case WLAN_CIPHER_SUITE_CCMP:
 402         case WLAN_CIPHER_SUITE_GCMP:
 403         case WLAN_CIPHER_SUITE_GCMP_256:
 404                 /*
 405                  * For non-QoS this relies on the fact that both the uCode and
 406                  * mac80211/our RX code use TID 0 for checking the PN.
 407                  */
 408                 if (sta) {
 409                         struct iwl_mvm_sta *mvmsta;
 410                         struct iwl_mvm_key_pn *ptk_pn;
 411                         const u8 *pn;
 412
 413                         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 414                         rcu_read_lock();
 415                         ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]);
 416                         if (WARN_ON(!ptk_pn)) {
 417                                 rcu_read_unlock();
 418                                 break;
 419                         }
 420
 421                         for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
 422                                 pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i,
 423                                                 mvm->trans->num_rx_queues);
 424                                 rsc[i] = cpu_to_le64((u64)pn[5] |
 425                                                      ((u64)pn[4] << 8) |
 426                                                      ((u64)pn[3] << 16) |
 427                                                      ((u64)pn[2] << 24) |
 428                                                      ((u64)pn[1] << 32) |
 429                                                      ((u64)pn[0] << 40));
 430                         }
 431
 432                         rcu_read_unlock();
 433                 } else {
 434                         for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
 435                                 u8 *pn = seq.ccmp.pn;
 436
 437                                 ieee80211_get_key_rx_seq(key, i, &seq);
 438                                 rsc[i] = cpu_to_le64((u64)pn[5] |
 439                                                      ((u64)pn[4] << 8) |
 440                                                      ((u64)pn[3] << 16) |
 441                                                      ((u64)pn[2] << 24) |
 442                                                      ((u64)pn[1] << 32) |
 443                                                      ((u64)pn[0] << 40));
 444                         }
 445                 }
 446                 data->have_rsc = true;
 447                 break;
 448         }
 449 }
 450
 451 static int iwl_mvm_wowlan_config_rsc_tsc(struct iwl_mvm *mvm,
 452                                          struct ieee80211_vif *vif)
 453 {
 454         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 455         int ver = iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP,
 456                                         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->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 = cpu_to_le32(mvmvif->ap_sta_id);
 497                 } else {
 498                         /* ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN */
 499                         size = sizeof(data.rsc_tsc->params);
 500                 }
 501
 502                 ieee80211_iter_keys(mvm->hw, vif,
 503                                     iwl_mvm_wowlan_get_rsc_tsc_data,
 504                                     &data);
 505
 506                 if (data.have_rsc_tsc)
 507                         ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM,
 508                                                    CMD_ASYNC, size,
 509                                                    data.rsc_tsc);
 510                 else
 511                         ret = 0;
 512                 kfree(data.rsc_tsc);
 513         } else {
 514                 ret = 0;
 515                 WARN_ON_ONCE(1);
 516         }
 517
 518         return ret;
 519 }
 520
 521 struct wowlan_key_tkip_data {
 522         struct iwl_wowlan_tkip_params_cmd tkip;
 523         bool have_tkip_keys;
 524 };
 525
 526 static void iwl_mvm_wowlan_get_tkip_data(struct ieee80211_hw *hw,
 527                                          struct ieee80211_vif *vif,
 528                                          struct ieee80211_sta *sta,
 529                                          struct ieee80211_key_conf *key,
 530                                          void *_data)
 531 {
 532         struct wowlan_key_tkip_data *data = _data;
 533         struct iwl_p1k_cache *rx_p1ks;
 534         u8 *rx_mic_key;
 535         struct ieee80211_key_seq seq;
 536         u32 cur_rx_iv32 = 0;
 537         u16 p1k[IWL_P1K_SIZE];
 538         int i;
 539
 540         switch (key->cipher) {
 541         default:
 542                 break;
 543         case WLAN_CIPHER_SUITE_TKIP:
 544                 if (sta) {
 545                         u64 pn64;
 546
 547                         rx_p1ks = data->tkip.rx_uni;
 548
 549                         pn64 = atomic64_read(&key->tx_pn);
 550
 551                         ieee80211_get_tkip_p1k_iv(key, TKIP_PN_TO_IV32(pn64),
 552                                                   p1k);
 553                         iwl_mvm_convert_p1k(p1k, data->tkip.tx.p1k);
 554
 555                         memcpy(data->tkip.mic_keys.tx,
 556                                &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
 557                                IWL_MIC_KEY_SIZE);
 558
 559                         rx_mic_key = data->tkip.mic_keys.rx_unicast;
 560                 } else {
 561                         rx_p1ks = data->tkip.rx_multi;
 562                         rx_mic_key = data->tkip.mic_keys.rx_mcast;
 563                 }
 564
 565                 for (i = 0; i < IWL_NUM_RSC; i++) {
 566                         /* wrapping isn't allowed, AP must rekey */
 567                         if (seq.tkip.iv32 > cur_rx_iv32)
 568                                 cur_rx_iv32 = seq.tkip.iv32;
 569                 }
 570
 571                 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
 572                                           cur_rx_iv32, p1k);
 573                 iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k);
 574                 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
 575                                           cur_rx_iv32 + 1, p1k);
 576                 iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k);
 577
 578                 memcpy(rx_mic_key,
 579                        &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
 580                        IWL_MIC_KEY_SIZE);
 581
 582                 data->have_tkip_keys = true;
 583                 break;
 584         }
 585 }
 586
 587 struct wowlan_key_gtk_type_iter {
 588         struct iwl_wowlan_kek_kck_material_cmd_v4 *kek_kck_cmd;
 589 };
 590
 591 static void iwl_mvm_wowlan_gtk_type_iter(struct ieee80211_hw *hw,
 592                                          struct ieee80211_vif *vif,
 593                                          struct ieee80211_sta *sta,
 594                                          struct ieee80211_key_conf *key,
 595                                          void *_data)
 596 {
 597         struct wowlan_key_gtk_type_iter *data = _data;
 598
 599         switch (key->cipher) {
 600         default:
 601                 return;
 602         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 603         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 604                 data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_GCMP);
 605                 return;
 606         case WLAN_CIPHER_SUITE_AES_CMAC:
 607                 data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_CCM);
 608                 return;
 609         case WLAN_CIPHER_SUITE_CCMP:
 610                 if (!sta)
 611                         data->kek_kck_cmd->gtk_cipher =
 612                                 cpu_to_le32(STA_KEY_FLG_CCM);
 613                 break;
 614         case WLAN_CIPHER_SUITE_GCMP:
 615         case WLAN_CIPHER_SUITE_GCMP_256:
 616                 if (!sta)
 617                         data->kek_kck_cmd->gtk_cipher =
 618                                 cpu_to_le32(STA_KEY_FLG_GCMP);
 619                 break;
 620         }
 621 }
 622
 623 static int iwl_mvm_send_patterns_v1(struct iwl_mvm *mvm,
 624                                     struct cfg80211_wowlan *wowlan)
 625 {
 626         struct iwl_wowlan_patterns_cmd_v1 *pattern_cmd;
 627         struct iwl_host_cmd cmd = {
 628                 .id = WOWLAN_PATTERNS,
 629                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
 630         };
 631         int i, err;
 632
 633         if (!wowlan->n_patterns)
 634                 return 0;
 635
 636         cmd.len[0] = struct_size(pattern_cmd, patterns, wowlan->n_patterns);
 637
 638         pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
 639         if (!pattern_cmd)
 640                 return -ENOMEM;
 641
 642         pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
 643
 644         for (i = 0; i < wowlan->n_patterns; i++) {
 645                 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
 646
 647                 memcpy(&pattern_cmd->patterns[i].mask,
 648                        wowlan->patterns[i].mask, mask_len);
 649                 memcpy(&pattern_cmd->patterns[i].pattern,
 650                        wowlan->patterns[i].pattern,
 651                        wowlan->patterns[i].pattern_len);
 652                 pattern_cmd->patterns[i].mask_size = mask_len;
 653                 pattern_cmd->patterns[i].pattern_size =
 654                         wowlan->patterns[i].pattern_len;
 655         }
 656
 657         cmd.data[0] = pattern_cmd;
 658         err = iwl_mvm_send_cmd(mvm, &cmd);
 659         kfree(pattern_cmd);
 660         return err;
 661 }
 662
 663 static int iwl_mvm_send_patterns(struct iwl_mvm *mvm,
 664                                  struct ieee80211_vif *vif,
 665                                  struct cfg80211_wowlan *wowlan)
 666 {
 667         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 668         struct iwl_wowlan_patterns_cmd *pattern_cmd;
 669         struct iwl_host_cmd cmd = {
 670                 .id = WOWLAN_PATTERNS,
 671                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
 672         };
 673         int i, err;
 674         int ver = iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP,
 675                                         WOWLAN_PATTERNS,
 676                                         IWL_FW_CMD_VER_UNKNOWN);
 677
 678         if (!wowlan->n_patterns)
 679                 return 0;
 680
 681         cmd.len[0] = sizeof(*pattern_cmd) +
 682                 wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern_v2);
 683
 684         pattern_cmd = kzalloc(cmd.len[0], GFP_KERNEL);
 685         if (!pattern_cmd)
 686                 return -ENOMEM;
 687
 688         pattern_cmd->n_patterns = wowlan->n_patterns;
 689         if (ver >= 3)
 690                 pattern_cmd->sta_id = mvmvif->ap_sta_id;
 691
 692         for (i = 0; i < wowlan->n_patterns; i++) {
 693                 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
 694
 695                 pattern_cmd->patterns[i].pattern_type =
 696                         WOWLAN_PATTERN_TYPE_BITMASK;
 697
 698                 memcpy(&pattern_cmd->patterns[i].u.bitmask.mask,
 699                        wowlan->patterns[i].mask, mask_len);
 700                 memcpy(&pattern_cmd->patterns[i].u.bitmask.pattern,
 701                        wowlan->patterns[i].pattern,
 702                        wowlan->patterns[i].pattern_len);
 703                 pattern_cmd->patterns[i].u.bitmask.mask_size = mask_len;
 704                 pattern_cmd->patterns[i].u.bitmask.pattern_size =
 705                         wowlan->patterns[i].pattern_len;
 706         }
 707
 708         cmd.data[0] = pattern_cmd;
 709         err = iwl_mvm_send_cmd(mvm, &cmd);
 710         kfree(pattern_cmd);
 711         return err;
 712 }
 713
 714 static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 715                                 struct ieee80211_sta *ap_sta)
 716 {
 717         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 718         struct ieee80211_chanctx_conf *ctx;
 719         u8 chains_static, chains_dynamic;
 720         struct cfg80211_chan_def chandef;
 721         int ret, i;
 722         struct iwl_binding_cmd_v1 binding_cmd = {};
 723         struct iwl_time_quota_cmd quota_cmd = {};
 724         struct iwl_time_quota_data *quota;
 725         u32 status;
 726
 727         if (WARN_ON_ONCE(iwl_mvm_is_cdb_supported(mvm)))
 728                 return -EINVAL;
 729
 730         /* add back the PHY */
 731         if (WARN_ON(!mvmvif->phy_ctxt))
 732                 return -EINVAL;
 733
 734         rcu_read_lock();
 735         ctx = rcu_dereference(vif->chanctx_conf);
 736         if (WARN_ON(!ctx)) {
 737                 rcu_read_unlock();
 738                 return -EINVAL;
 739         }
 740         chandef = ctx->def;
 741         chains_static = ctx->rx_chains_static;
 742         chains_dynamic = ctx->rx_chains_dynamic;
 743         rcu_read_unlock();
 744
 745         ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt, &chandef,
 746                                    chains_static, chains_dynamic);
 747         if (ret)
 748                 return ret;
 749
 750         /* add back the MAC */
 751         mvmvif->uploaded = false;
 752
 753         if (WARN_ON(!vif->bss_conf.assoc))
 754                 return -EINVAL;
 755
 756         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
 757         if (ret)
 758                 return ret;
 759
 760         /* add back binding - XXX refactor? */
 761         binding_cmd.id_and_color =
 762                 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
 763                                                 mvmvif->phy_ctxt->color));
 764         binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD);
 765         binding_cmd.phy =
 766                 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
 767                                                 mvmvif->phy_ctxt->color));
 768         binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
 769                                                               mvmvif->color));
 770         for (i = 1; i < MAX_MACS_IN_BINDING; i++)
 771                 binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID);
 772
 773         status = 0;
 774         ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD,
 775                                           IWL_BINDING_CMD_SIZE_V1, &binding_cmd,
 776                                           &status);
 777         if (ret) {
 778                 IWL_ERR(mvm, "Failed to add binding: %d\n", ret);
 779                 return ret;
 780         }
 781
 782         if (status) {
 783                 IWL_ERR(mvm, "Binding command failed: %u\n", status);
 784                 return -EIO;
 785         }
 786
 787         ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false, 0);
 788         if (ret)
 789                 return ret;
 790         rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], ap_sta);
 791
 792         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
 793         if (ret)
 794                 return ret;
 795
 796         /* and some quota */
 797         quota = iwl_mvm_quota_cmd_get_quota(mvm, &quota_cmd, 0);
 798         quota->id_and_color =
 799                 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
 800                                                 mvmvif->phy_ctxt->color));
 801         quota->quota = cpu_to_le32(IWL_MVM_MAX_QUOTA);
 802         quota->max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA);
 803
 804         for (i = 1; i < MAX_BINDINGS; i++) {
 805                 quota = iwl_mvm_quota_cmd_get_quota(mvm, &quota_cmd, i);
 806                 quota->id_and_color = cpu_to_le32(FW_CTXT_INVALID);
 807         }
 808
 809         ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0,
 810                                    iwl_mvm_quota_cmd_size(mvm), &quota_cmd);
 811         if (ret)
 812                 IWL_ERR(mvm, "Failed to send quota: %d\n", ret);
 813
 814         if (iwl_mvm_is_lar_supported(mvm) && iwl_mvm_init_fw_regd(mvm))
 815                 IWL_ERR(mvm, "Failed to initialize D3 LAR information\n");
 816
 817         return 0;
 818 }
 819
 820 static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm,
 821                                        struct ieee80211_vif *vif)
 822 {
 823         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 824         struct iwl_nonqos_seq_query_cmd query_cmd = {
 825                 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET),
 826                 .mac_id_n_color =
 827                         cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
 828                                                         mvmvif->color)),
 829         };
 830         struct iwl_host_cmd cmd = {
 831                 .id = NON_QOS_TX_COUNTER_CMD,
 832                 .flags = CMD_WANT_SKB,
 833         };
 834         int err;
 835         u32 size;
 836
 837         cmd.data[0] = &query_cmd;
 838         cmd.len[0] = sizeof(query_cmd);
 839
 840         err = iwl_mvm_send_cmd(mvm, &cmd);
 841         if (err)
 842                 return err;
 843
 844         size = iwl_rx_packet_payload_len(cmd.resp_pkt);
 845         if (size < sizeof(__le16)) {
 846                 err = -EINVAL;
 847         } else {
 848                 err = le16_to_cpup((__le16 *)cmd.resp_pkt->data);
 849                 /* firmware returns next, not last-used seqno */
 850                 err = (u16) (err - 0x10);
 851         }
 852
 853         iwl_free_resp(&cmd);
 854         return err;
 855 }
 856
 857 void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
 858 {
 859         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 860         struct iwl_nonqos_seq_query_cmd query_cmd = {
 861                 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET),
 862                 .mac_id_n_color =
 863                         cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
 864                                                         mvmvif->color)),
 865                 .value = cpu_to_le16(mvmvif->seqno),
 866         };
 867
 868         /* return if called during restart, not resume from D3 */
 869         if (!mvmvif->seqno_valid)
 870                 return;
 871
 872         mvmvif->seqno_valid = false;
 873
 874         if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0,
 875                                  sizeof(query_cmd), &query_cmd))
 876                 IWL_ERR(mvm, "failed to set non-QoS seqno\n");
 877 }
 878
 879 static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm)
 880 {
 881         iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
 882
 883         iwl_mvm_stop_device(mvm);
 884         /*
 885          * Set the HW restart bit -- this is mostly true as we're
 886          * going to load new firmware and reprogram that, though
 887          * the reprogramming is going to be manual to avoid adding
 888          * all the MACs that aren't support.
 889          * We don't have to clear up everything though because the
 890          * reprogramming is manual. When we resume, we'll actually
 891          * go through a proper restart sequence again to switch
 892          * back to the runtime firmware image.
 893          */
 894         set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
 895
 896         /* the fw is reset, so all the keys are cleared */
 897         memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
 898
 899         mvm->ptk_ivlen = 0;
 900         mvm->ptk_icvlen = 0;
 901         mvm->ptk_ivlen = 0;
 902         mvm->ptk_icvlen = 0;
 903
 904         return iwl_mvm_load_d3_fw(mvm);
 905 }
 906
 907 static int
 908 iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm,
 909                           struct cfg80211_wowlan *wowlan,
 910                           struct iwl_wowlan_config_cmd *wowlan_config_cmd,
 911                           struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
 912                           struct ieee80211_sta *ap_sta)
 913 {
 914         struct iwl_mvm_sta *mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
 915
 916         /* TODO: wowlan_config_cmd->wowlan_ba_teardown_tids */
 917
 918         wowlan_config_cmd->is_11n_connection =
 919                                         ap_sta->ht_cap.ht_supported;
 920         wowlan_config_cmd->flags = ENABLE_L3_FILTERING |
 921                 ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING;
 922
 923         if (iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP,
 924                                   WOWLAN_CONFIGURATION, 0) < 6) {
 925                 /* Query the last used seqno and set it */
 926                 int ret = iwl_mvm_get_last_nonqos_seq(mvm, vif);
 927
 928                 if (ret < 0)
 929                         return ret;
 930
 931                 wowlan_config_cmd->non_qos_seq = cpu_to_le16(ret);
 932         }
 933
 934         iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, wowlan_config_cmd);
 935
 936         if (wowlan->disconnect)
 937                 wowlan_config_cmd->wakeup_filter |=
 938                         cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
 939                                     IWL_WOWLAN_WAKEUP_LINK_CHANGE);
 940         if (wowlan->magic_pkt)
 941                 wowlan_config_cmd->wakeup_filter |=
 942                         cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET);
 943         if (wowlan->gtk_rekey_failure)
 944                 wowlan_config_cmd->wakeup_filter |=
 945                         cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
 946         if (wowlan->eap_identity_req)
 947                 wowlan_config_cmd->wakeup_filter |=
 948                         cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ);
 949         if (wowlan->four_way_handshake)
 950                 wowlan_config_cmd->wakeup_filter |=
 951                         cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
 952         if (wowlan->n_patterns)
 953                 wowlan_config_cmd->wakeup_filter |=
 954                         cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH);
 955
 956         if (wowlan->rfkill_release)
 957                 wowlan_config_cmd->wakeup_filter |=
 958                         cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
 959
 960         if (wowlan->tcp) {
 961                 /*
 962                  * Set the "link change" (really "link lost") flag as well
 963                  * since that implies losing the TCP connection.
 964                  */
 965                 wowlan_config_cmd->wakeup_filter |=
 966                         cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS |
 967                                     IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE |
 968                                     IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET |
 969                                     IWL_WOWLAN_WAKEUP_LINK_CHANGE);
 970         }
 971
 972         if (wowlan->any) {
 973                 wowlan_config_cmd->wakeup_filter |=
 974                         cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
 975                                     IWL_WOWLAN_WAKEUP_LINK_CHANGE |
 976                                     IWL_WOWLAN_WAKEUP_RX_FRAME |
 977                                     IWL_WOWLAN_WAKEUP_BCN_FILTERING);
 978         }
 979
 980         return 0;
 981 }
 982
 983 static int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm,
 984                                             struct ieee80211_vif *vif)
 985 {
 986         bool unified = fw_has_capa(&mvm->fw->ucode_capa,
 987                                    IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
 988         struct wowlan_key_reprogram_data key_data = {};
 989         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 990         int ret;
 991         u8 cmd_ver;
 992         size_t cmd_size;
 993
 994         if (!unified) {
 995                 /*
 996                  * if we have to configure keys, call ieee80211_iter_keys(),
 997                  * as we need non-atomic context in order to take the
 998                  * required locks.
 999                  */
1000                 /*
1001                  * Note that currently we don't use CMD_ASYNC in the iterator.
1002                  * In case of key_data.configure_keys, all the configured
1003                  * commands are SYNC, and iwl_mvm_wowlan_program_keys() will
1004                  * take care of locking/unlocking mvm->mutex.
1005                  */
1006                 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_program_keys,
1007                                     &key_data);
1008
1009                 if (key_data.error)
1010                         return -EIO;
1011         }
1012
1013         ret = iwl_mvm_wowlan_config_rsc_tsc(mvm, vif);
1014         if (ret)
1015                 return ret;
1016
1017         if (!fw_has_api(&mvm->fw->ucode_capa,
1018                         IWL_UCODE_TLV_API_TKIP_MIC_KEYS)) {
1019                 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP,
1020                                                 WOWLAN_TKIP_PARAM,
1021                                                 IWL_FW_CMD_VER_UNKNOWN);
1022                 struct wowlan_key_tkip_data tkip_data = {};
1023                 int size;
1024
1025                 if (ver == 2) {
1026                         size = sizeof(tkip_data.tkip);
1027                         tkip_data.tkip.sta_id =
1028                                 cpu_to_le32(mvmvif->ap_sta_id);
1029                 } else if (ver == 1 || ver == IWL_FW_CMD_VER_UNKNOWN) {
1030                         size = sizeof(struct iwl_wowlan_tkip_params_cmd_ver_1);
1031                 } else {
1032                         WARN_ON_ONCE(1);
1033                         return -EINVAL;
1034                 }
1035
1036                 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_get_tkip_data,
1037                                     &tkip_data);
1038
1039                 if (tkip_data.have_tkip_keys) {
1040                         /* send relevant data according to CMD version */
1041                         ret = iwl_mvm_send_cmd_pdu(mvm,
1042                                                    WOWLAN_TKIP_PARAM,
1043                                                    CMD_ASYNC, size,
1044                                                    &tkip_data.tkip);
1045                         if (ret)
1046                                 return ret;
1047                 }
1048         }
1049
1050         /* configure rekey data only if offloaded rekey is supported (d3) */
1051         if (mvmvif->rekey_data.valid) {
1052                 struct iwl_wowlan_kek_kck_material_cmd_v4 kek_kck_cmd = {};
1053                 struct iwl_wowlan_kek_kck_material_cmd_v4 *_kek_kck_cmd =
1054                         &kek_kck_cmd;
1055                 struct wowlan_key_gtk_type_iter gtk_type_data = {
1056                         .kek_kck_cmd = _kek_kck_cmd,
1057                 };
1058
1059                 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,
1060                                                 IWL_ALWAYS_LONG_GROUP,
1061                                                 WOWLAN_KEK_KCK_MATERIAL,
1062                                                 IWL_FW_CMD_VER_UNKNOWN);
1063                 if (WARN_ON(cmd_ver != 2 && cmd_ver != 3 && cmd_ver != 4 &&
1064                             cmd_ver != IWL_FW_CMD_VER_UNKNOWN))
1065                         return -EINVAL;
1066
1067                 ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_gtk_type_iter,
1068                                     &gtk_type_data);
1069
1070                 memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck,
1071                        mvmvif->rekey_data.kck_len);
1072                 kek_kck_cmd.kck_len = cpu_to_le16(mvmvif->rekey_data.kck_len);
1073                 memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek,
1074                        mvmvif->rekey_data.kek_len);
1075                 kek_kck_cmd.kek_len = cpu_to_le16(mvmvif->rekey_data.kek_len);
1076                 kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr;
1077                 kek_kck_cmd.akm = cpu_to_le32(mvmvif->rekey_data.akm);
1078                 kek_kck_cmd.sta_id = cpu_to_le32(mvmvif->ap_sta_id);
1079
1080                 if (cmd_ver == 4) {
1081                         cmd_size = sizeof(struct iwl_wowlan_kek_kck_material_cmd_v4);
1082                 } else {
1083                         if (cmd_ver == 3)
1084                                 cmd_size =
1085                                         sizeof(struct iwl_wowlan_kek_kck_material_cmd_v3);
1086                         else
1087                                 cmd_size =
1088                                         sizeof(struct iwl_wowlan_kek_kck_material_cmd_v2);
1089                         /* skip the sta_id at the beginning */
1090                         _kek_kck_cmd = (void *)
1091                                 ((u8 *)_kek_kck_cmd) + sizeof(kek_kck_cmd.sta_id);
1092                 }
1093
1094                 IWL_DEBUG_WOWLAN(mvm, "setting akm %d\n",
1095                                  mvmvif->rekey_data.akm);
1096
1097                 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_KEK_KCK_MATERIAL,
1098                                            CMD_ASYNC, cmd_size, _kek_kck_cmd);
1099                 if (ret)
1100                         return ret;
1101         }
1102
1103         return 0;
1104 }
1105
1106 static int
1107 iwl_mvm_wowlan_config(struct iwl_mvm *mvm,
1108                       struct cfg80211_wowlan *wowlan,
1109                       struct iwl_wowlan_config_cmd *wowlan_config_cmd,
1110                       struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
1111                       struct ieee80211_sta *ap_sta)
1112 {
1113         int ret;
1114         bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1115                                          IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1116
1117         mvm->offload_tid = wowlan_config_cmd->offloading_tid;
1118
1119         if (!unified_image) {
1120                 ret = iwl_mvm_switch_to_d3(mvm);
1121                 if (ret)
1122                         return ret;
1123
1124                 ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta);
1125                 if (ret)
1126                         return ret;
1127         }
1128
1129         /*
1130          * This needs to be unlocked due to lock ordering
1131          * constraints. Since we're in the suspend path
1132          * that isn't really a problem though.
1133          */
1134         mutex_unlock(&mvm->mutex);
1135         ret = iwl_mvm_wowlan_config_key_params(mvm, vif);
1136         mutex_lock(&mvm->mutex);
1137         if (ret)
1138                 return ret;
1139
1140         ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0,
1141                                    sizeof(*wowlan_config_cmd),
1142                                    wowlan_config_cmd);
1143         if (ret)
1144                 return ret;
1145
1146         if (fw_has_api(&mvm->fw->ucode_capa,
1147                        IWL_UCODE_TLV_API_WOWLAN_TCP_SYN_WAKE))
1148                 ret = iwl_mvm_send_patterns(mvm, vif, wowlan);
1149         else
1150                 ret = iwl_mvm_send_patterns_v1(mvm, wowlan);
1151         if (ret)
1152                 return ret;
1153
1154         return iwl_mvm_send_proto_offload(mvm, vif, false, true, 0);
1155 }
1156
1157 static int
1158 iwl_mvm_netdetect_config(struct iwl_mvm *mvm,
1159                          struct cfg80211_wowlan *wowlan,
1160                          struct cfg80211_sched_scan_request *nd_config,
1161                          struct ieee80211_vif *vif)
1162 {
1163         int ret;
1164         bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1165                                          IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1166
1167         if (!unified_image) {
1168                 ret = iwl_mvm_switch_to_d3(mvm);
1169                 if (ret)
1170                         return ret;
1171         } else {
1172                 /* In theory, we wouldn't have to stop a running sched
1173                  * scan in order to start another one (for
1174                  * net-detect).  But in practice this doesn't seem to
1175                  * work properly, so stop any running sched_scan now.
1176                  */
1177                 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
1178                 if (ret)
1179                         return ret;
1180         }
1181
1182         ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies,
1183                                        IWL_MVM_SCAN_NETDETECT);
1184         if (ret)
1185                 return ret;
1186
1187         if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels))
1188                 return -EBUSY;
1189
1190         /* save the sched scan matchsets... */
1191         if (nd_config->n_match_sets) {
1192                 mvm->nd_match_sets = kmemdup(nd_config->match_sets,
1193                                              sizeof(*nd_config->match_sets) *
1194                                              nd_config->n_match_sets,
1195                                              GFP_KERNEL);
1196                 if (mvm->nd_match_sets)
1197                         mvm->n_nd_match_sets = nd_config->n_match_sets;
1198         }
1199
1200         /* ...and the sched scan channels for later reporting */
1201         mvm->nd_channels = kmemdup(nd_config->channels,
1202                                    sizeof(*nd_config->channels) *
1203                                    nd_config->n_channels,
1204                                    GFP_KERNEL);
1205         if (mvm->nd_channels)
1206                 mvm->n_nd_channels = nd_config->n_channels;
1207
1208         return 0;
1209 }
1210
1211 static void iwl_mvm_free_nd(struct iwl_mvm *mvm)
1212 {
1213         kfree(mvm->nd_match_sets);
1214         mvm->nd_match_sets = NULL;
1215         mvm->n_nd_match_sets = 0;
1216         kfree(mvm->nd_channels);
1217         mvm->nd_channels = NULL;
1218         mvm->n_nd_channels = 0;
1219 }
1220
1221 static int __iwl_mvm_suspend(struct ieee80211_hw *hw,
1222                              struct cfg80211_wowlan *wowlan,
1223                              bool test)
1224 {
1225         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1226         struct ieee80211_vif *vif = NULL;
1227         struct iwl_mvm_vif *mvmvif = NULL;
1228         struct ieee80211_sta *ap_sta = NULL;
1229         struct iwl_d3_manager_config d3_cfg_cmd_data = {
1230                 /*
1231                  * Program the minimum sleep time to 10 seconds, as many
1232                  * platforms have issues processing a wakeup signal while
1233                  * still being in the process of suspending.
1234                  */
1235                 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000),
1236         };
1237         struct iwl_host_cmd d3_cfg_cmd = {
1238                 .id = D3_CONFIG_CMD,
1239                 .flags = CMD_WANT_SKB | CMD_SEND_IN_D3,
1240                 .data[0] = &d3_cfg_cmd_data,
1241                 .len[0] = sizeof(d3_cfg_cmd_data),
1242         };
1243         int ret;
1244         int len __maybe_unused;
1245         bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1246                                          IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1247
1248         if (!wowlan) {
1249                 /*
1250                  * mac80211 shouldn't get here, but for D3 test
1251                  * it doesn't warrant a warning
1252                  */
1253                 WARN_ON(!test);
1254                 return -EINVAL;
1255         }
1256
1257         mutex_lock(&mvm->mutex);
1258
1259         set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
1260
1261         synchronize_net();
1262
1263         vif = iwl_mvm_get_bss_vif(mvm);
1264         if (IS_ERR_OR_NULL(vif)) {
1265                 ret = 1;
1266                 goto out_noreset;
1267         }
1268
1269         mvmvif = iwl_mvm_vif_from_mac80211(vif);
1270
1271         if (mvmvif->ap_sta_id == IWL_MVM_INVALID_STA) {
1272                 /* if we're not associated, this must be netdetect */
1273                 if (!wowlan->nd_config) {
1274                         ret = 1;
1275                         goto out_noreset;
1276                 }
1277
1278                 ret = iwl_mvm_netdetect_config(
1279                         mvm, wowlan, wowlan->nd_config, vif);
1280                 if (ret)
1281                         goto out;
1282
1283                 mvm->net_detect = true;
1284         } else {
1285                 struct iwl_wowlan_config_cmd wowlan_config_cmd = {};
1286
1287                 wowlan_config_cmd.sta_id = mvmvif->ap_sta_id;
1288
1289                 ap_sta = rcu_dereference_protected(
1290                         mvm->fw_id_to_mac_id[mvmvif->ap_sta_id],
1291                         lockdep_is_held(&mvm->mutex));
1292                 if (IS_ERR_OR_NULL(ap_sta)) {
1293                         ret = -EINVAL;
1294                         goto out_noreset;
1295                 }
1296
1297                 ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1298                                                 vif, mvmvif, ap_sta);
1299                 if (ret)
1300                         goto out_noreset;
1301                 ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1302                                             vif, mvmvif, ap_sta);
1303                 if (ret)
1304                         goto out;
1305
1306                 mvm->net_detect = false;
1307         }
1308
1309         ret = iwl_mvm_power_update_device(mvm);
1310         if (ret)
1311                 goto out;
1312
1313         ret = iwl_mvm_power_update_mac(mvm);
1314         if (ret)
1315                 goto out;
1316
1317 #ifdef CONFIG_IWLWIFI_DEBUGFS
1318         if (mvm->d3_wake_sysassert)
1319                 d3_cfg_cmd_data.wakeup_flags |=
1320                         cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR);
1321 #endif
1322
1323         /*
1324          * Prior to 9000 device family the driver needs to stop the dbg
1325          * recording before entering D3. In later devices the FW stops the
1326          * recording automatically.
1327          */
1328         if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_9000)
1329                 iwl_fw_dbg_stop_restart_recording(&mvm->fwrt, NULL, true);
1330
1331         mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_D3;
1332
1333         /* must be last -- this switches firmware state */
1334         ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd);
1335         if (ret)
1336                 goto out;
1337 #ifdef CONFIG_IWLWIFI_DEBUGFS
1338         len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt);
1339         if (len >= sizeof(u32)) {
1340                 mvm->d3_test_pme_ptr =
1341                         le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data);
1342         }
1343 #endif
1344         iwl_free_resp(&d3_cfg_cmd);
1345
1346         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1347
1348         ret = iwl_trans_d3_suspend(mvm->trans, test, !unified_image);
1349  out:
1350         if (ret < 0) {
1351                 iwl_mvm_free_nd(mvm);
1352
1353                 if (!unified_image) {
1354                         if (mvm->fw_restart > 0) {
1355                                 mvm->fw_restart--;
1356                                 ieee80211_restart_hw(mvm->hw);
1357                         }
1358                 }
1359
1360                 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
1361         }
1362  out_noreset:
1363         mutex_unlock(&mvm->mutex);
1364
1365         return ret;
1366 }
1367
1368 int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
1369 {
1370         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1371
1372         iwl_mvm_pause_tcm(mvm, true);
1373
1374         iwl_fw_runtime_suspend(&mvm->fwrt);
1375
1376         return __iwl_mvm_suspend(hw, wowlan, false);
1377 }
1378
1379 /* converted data from the different status responses */
1380 struct iwl_wowlan_status_data {
1381         u16 pattern_number;
1382         u16 qos_seq_ctr[8];
1383         u32 wakeup_reasons;
1384         u32 wake_packet_length;
1385         u32 wake_packet_bufsize;
1386         const u8 *wake_packet;
1387 };
1388
1389 static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm,
1390                                           struct ieee80211_vif *vif,
1391                                           struct iwl_wowlan_status_data *status)
1392 {
1393         struct sk_buff *pkt = NULL;
1394         struct cfg80211_wowlan_wakeup wakeup = {
1395                 .pattern_idx = -1,
1396         };
1397         struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
1398         u32 reasons = status->wakeup_reasons;
1399
1400         if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
1401                 wakeup_report = NULL;
1402                 goto report;
1403         }
1404
1405         pm_wakeup_event(mvm->dev, 0);
1406
1407         if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET)
1408                 wakeup.magic_pkt = true;
1409
1410         if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN)
1411                 wakeup.pattern_idx =
1412                         status->pattern_number;
1413
1414         if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1415                        IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH))
1416                 wakeup.disconnect = true;
1417
1418         if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)
1419                 wakeup.gtk_rekey_failure = true;
1420
1421         if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
1422                 wakeup.rfkill_release = true;
1423
1424         if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST)
1425                 wakeup.eap_identity_req = true;
1426
1427         if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE)
1428                 wakeup.four_way_handshake = true;
1429
1430         if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS)
1431                 wakeup.tcp_connlost = true;
1432
1433         if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE)
1434                 wakeup.tcp_nomoretokens = true;
1435
1436         if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET)
1437                 wakeup.tcp_match = true;
1438
1439         if (status->wake_packet_bufsize) {
1440                 int pktsize = status->wake_packet_bufsize;
1441                 int pktlen = status->wake_packet_length;
1442                 const u8 *pktdata = status->wake_packet;
1443                 struct ieee80211_hdr *hdr = (void *)pktdata;
1444                 int truncated = pktlen - pktsize;
1445
1446                 /* this would be a firmware bug */
1447                 if (WARN_ON_ONCE(truncated < 0))
1448                         truncated = 0;
1449
1450                 if (ieee80211_is_data(hdr->frame_control)) {
1451                         int hdrlen = ieee80211_hdrlen(hdr->frame_control);
1452                         int ivlen = 0, icvlen = 4; /* also FCS */
1453
1454                         pkt = alloc_skb(pktsize, GFP_KERNEL);
1455                         if (!pkt)
1456                                 goto report;
1457
1458                         skb_put_data(pkt, pktdata, hdrlen);
1459                         pktdata += hdrlen;
1460                         pktsize -= hdrlen;
1461
1462                         if (ieee80211_has_protected(hdr->frame_control)) {
1463                                 /*
1464                                  * This is unlocked and using gtk_i(c)vlen,
1465                                  * but since everything is under RTNL still
1466                                  * that's not really a problem - changing
1467                                  * it would be difficult.
1468                                  */
1469                                 if (is_multicast_ether_addr(hdr->addr1)) {
1470                                         ivlen = mvm->gtk_ivlen;
1471                                         icvlen += mvm->gtk_icvlen;
1472                                 } else {
1473                                         ivlen = mvm->ptk_ivlen;
1474                                         icvlen += mvm->ptk_icvlen;
1475                                 }
1476                         }
1477
1478                         /* if truncated, FCS/ICV is (partially) gone */
1479                         if (truncated >= icvlen) {
1480                                 icvlen = 0;
1481                                 truncated -= icvlen;
1482                         } else {
1483                                 icvlen -= truncated;
1484                                 truncated = 0;
1485                         }
1486
1487                         pktsize -= ivlen + icvlen;
1488                         pktdata += ivlen;
1489
1490                         skb_put_data(pkt, pktdata, pktsize);
1491
1492                         if (ieee80211_data_to_8023(pkt, vif->addr, vif->type))
1493                                 goto report;
1494                         wakeup.packet = pkt->data;
1495                         wakeup.packet_present_len = pkt->len;
1496                         wakeup.packet_len = pkt->len - truncated;
1497                         wakeup.packet_80211 = false;
1498                 } else {
1499                         int fcslen = 4;
1500
1501                         if (truncated >= 4) {
1502                                 truncated -= 4;
1503                                 fcslen = 0;
1504                         } else {
1505                                 fcslen -= truncated;
1506                                 truncated = 0;
1507                         }
1508                         pktsize -= fcslen;
1509                         wakeup.packet = status->wake_packet;
1510                         wakeup.packet_present_len = pktsize;
1511                         wakeup.packet_len = pktlen - truncated;
1512                         wakeup.packet_80211 = true;
1513                 }
1514         }
1515
1516  report:
1517         ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
1518         kfree_skb(pkt);
1519 }
1520
1521 static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc,
1522                                   struct ieee80211_key_seq *seq)
1523 {
1524         u64 pn;
1525
1526         pn = le64_to_cpu(sc->pn);
1527         seq->ccmp.pn[0] = pn >> 40;
1528         seq->ccmp.pn[1] = pn >> 32;
1529         seq->ccmp.pn[2] = pn >> 24;
1530         seq->ccmp.pn[3] = pn >> 16;
1531         seq->ccmp.pn[4] = pn >> 8;
1532         seq->ccmp.pn[5] = pn;
1533 }
1534
1535 static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc,
1536                                    struct ieee80211_key_seq *seq)
1537 {
1538         seq->tkip.iv32 = le32_to_cpu(sc->iv32);
1539         seq->tkip.iv16 = le16_to_cpu(sc->iv16);
1540 }
1541
1542 static void iwl_mvm_set_aes_rx_seq(struct iwl_mvm *mvm, struct aes_sc *scs,
1543                                    struct ieee80211_sta *sta,
1544                                    struct ieee80211_key_conf *key)
1545 {
1546         int tid;
1547
1548         BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS);
1549
1550         if (sta && iwl_mvm_has_new_rx_api(mvm)) {
1551                 struct iwl_mvm_sta *mvmsta;
1552                 struct iwl_mvm_key_pn *ptk_pn;
1553
1554                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1555
1556                 rcu_read_lock();
1557                 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]);
1558                 if (WARN_ON(!ptk_pn)) {
1559                         rcu_read_unlock();
1560                         return;
1561                 }
1562
1563                 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1564                         struct ieee80211_key_seq seq = {};
1565                         int i;
1566
1567                         iwl_mvm_aes_sc_to_seq(&scs[tid], &seq);
1568                         ieee80211_set_key_rx_seq(key, tid, &seq);
1569                         for (i = 1; i < mvm->trans->num_rx_queues; i++)
1570                                 memcpy(ptk_pn->q[i].pn[tid],
1571                                        seq.ccmp.pn, IEEE80211_CCMP_PN_LEN);
1572                 }
1573                 rcu_read_unlock();
1574         } else {
1575                 for (tid = 0; tid < IWL_NUM_RSC; tid++) {
1576                         struct ieee80211_key_seq seq = {};
1577
1578                         iwl_mvm_aes_sc_to_seq(&scs[tid], &seq);
1579                         ieee80211_set_key_rx_seq(key, tid, &seq);
1580                 }
1581         }
1582 }
1583
1584 static void iwl_mvm_set_tkip_rx_seq(struct tkip_sc *scs,
1585                                     struct ieee80211_key_conf *key)
1586 {
1587         int tid;
1588
1589         BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS);
1590
1591         for (tid = 0; tid < IWL_NUM_RSC; tid++) {
1592                 struct ieee80211_key_seq seq = {};
1593
1594                 iwl_mvm_tkip_sc_to_seq(&scs[tid], &seq);
1595                 ieee80211_set_key_rx_seq(key, tid, &seq);
1596         }
1597 }
1598
1599 static void iwl_mvm_set_key_rx_seq(struct iwl_mvm *mvm,
1600                                    struct ieee80211_key_conf *key,
1601                                    struct iwl_wowlan_status *status)
1602 {
1603         union iwl_all_tsc_rsc *rsc = &status->gtk[0].rsc.all_tsc_rsc;
1604
1605         switch (key->cipher) {
1606         case WLAN_CIPHER_SUITE_CCMP:
1607         case WLAN_CIPHER_SUITE_GCMP:
1608         case WLAN_CIPHER_SUITE_GCMP_256:
1609                 iwl_mvm_set_aes_rx_seq(mvm, rsc->aes.multicast_rsc, NULL, key);
1610                 break;
1611         case WLAN_CIPHER_SUITE_TKIP:
1612                 iwl_mvm_set_tkip_rx_seq(rsc->tkip.multicast_rsc, key);
1613                 break;
1614         default:
1615                 WARN_ON(1);
1616         }
1617 }
1618
1619 struct iwl_mvm_d3_gtk_iter_data {
1620         struct iwl_mvm *mvm;
1621         struct iwl_wowlan_status *status;
1622         void *last_gtk;
1623         u32 cipher;
1624         bool find_phase, unhandled_cipher;
1625         int num_keys;
1626 };
1627
1628 static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw,
1629                                    struct ieee80211_vif *vif,
1630                                    struct ieee80211_sta *sta,
1631                                    struct ieee80211_key_conf *key,
1632                                    void *_data)
1633 {
1634         struct iwl_mvm_d3_gtk_iter_data *data = _data;
1635
1636         if (data->unhandled_cipher)
1637                 return;
1638
1639         switch (key->cipher) {
1640         case WLAN_CIPHER_SUITE_WEP40:
1641         case WLAN_CIPHER_SUITE_WEP104:
1642                 /* ignore WEP completely, nothing to do */
1643                 return;
1644         case WLAN_CIPHER_SUITE_CCMP:
1645         case WLAN_CIPHER_SUITE_GCMP:
1646         case WLAN_CIPHER_SUITE_GCMP_256:
1647         case WLAN_CIPHER_SUITE_TKIP:
1648                 /* we support these */
1649                 break;
1650         default:
1651                 /* everything else (even CMAC for MFP) - disconnect from AP */
1652                 data->unhandled_cipher = true;
1653                 return;
1654         }
1655
1656         data->num_keys++;
1657
1658         /*
1659          * pairwise key - update sequence counters only;
1660          * note that this assumes no TDLS sessions are active
1661          */
1662         if (sta) {
1663                 struct ieee80211_key_seq seq = {};
1664                 union iwl_all_tsc_rsc *sc =
1665                         &data->status->gtk[0].rsc.all_tsc_rsc;
1666
1667                 if (data->find_phase)
1668                         return;
1669
1670                 switch (key->cipher) {
1671                 case WLAN_CIPHER_SUITE_CCMP:
1672                 case WLAN_CIPHER_SUITE_GCMP:
1673                 case WLAN_CIPHER_SUITE_GCMP_256:
1674                         iwl_mvm_set_aes_rx_seq(data->mvm, sc->aes.unicast_rsc,
1675                                                sta, key);
1676                         atomic64_set(&key->tx_pn, le64_to_cpu(sc->aes.tsc.pn));
1677                         break;
1678                 case WLAN_CIPHER_SUITE_TKIP:
1679                         iwl_mvm_tkip_sc_to_seq(&sc->tkip.tsc, &seq);
1680                         iwl_mvm_set_tkip_rx_seq(sc->tkip.unicast_rsc, key);
1681                         atomic64_set(&key->tx_pn,
1682                                      (u64)seq.tkip.iv16 |
1683                                      ((u64)seq.tkip.iv32 << 16));
1684                         break;
1685                 }
1686
1687                 /* that's it for this key */
1688                 return;
1689         }
1690
1691         if (data->find_phase) {
1692                 data->last_gtk = key;
1693                 data->cipher = key->cipher;
1694                 return;
1695         }
1696
1697         if (data->status->num_of_gtk_rekeys)
1698                 ieee80211_remove_key(key);
1699         else if (data->last_gtk == key)
1700                 iwl_mvm_set_key_rx_seq(data->mvm, key, data->status);
1701 }
1702
1703 static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm,
1704                                           struct ieee80211_vif *vif,
1705                                           struct iwl_wowlan_status *status)
1706 {
1707         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1708         struct iwl_mvm_d3_gtk_iter_data gtkdata = {
1709                 .mvm = mvm,
1710                 .status = status,
1711         };
1712         u32 disconnection_reasons =
1713                 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1714                 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH;
1715
1716         if (!status || !vif->bss_conf.bssid)
1717                 return false;
1718
1719         if (le32_to_cpu(status->wakeup_reasons) & disconnection_reasons)
1720                 return false;
1721
1722         /* find last GTK that we used initially, if any */
1723         gtkdata.find_phase = true;
1724         ieee80211_iter_keys(mvm->hw, vif,
1725                             iwl_mvm_d3_update_keys, &gtkdata);
1726         /* not trying to keep connections with MFP/unhandled ciphers */
1727         if (gtkdata.unhandled_cipher)
1728                 return false;
1729         if (!gtkdata.num_keys)
1730                 goto out;
1731         if (!gtkdata.last_gtk)
1732                 return false;
1733
1734         /*
1735          * invalidate all other GTKs that might still exist and update
1736          * the one that we used
1737          */
1738         gtkdata.find_phase = false;
1739         ieee80211_iter_keys(mvm->hw, vif,
1740                             iwl_mvm_d3_update_keys, &gtkdata);
1741
1742         IWL_DEBUG_WOWLAN(mvm, "num of GTK rekeying %d\n",
1743                          le32_to_cpu(status->num_of_gtk_rekeys));
1744         if (status->num_of_gtk_rekeys) {
1745                 struct ieee80211_key_conf *key;
1746                 struct {
1747                         struct ieee80211_key_conf conf;
1748                         u8 key[32];
1749                 } conf = {
1750                         .conf.cipher = gtkdata.cipher,
1751                         .conf.keyidx =
1752                                 iwlmvm_wowlan_gtk_idx(&status->gtk[0]),
1753                 };
1754                 __be64 replay_ctr;
1755
1756                 IWL_DEBUG_WOWLAN(mvm,
1757                                  "Received from FW GTK cipher %d, key index %d\n",
1758                                  conf.conf.cipher, conf.conf.keyidx);
1759                 switch (gtkdata.cipher) {
1760                 case WLAN_CIPHER_SUITE_CCMP:
1761                 case WLAN_CIPHER_SUITE_GCMP:
1762                         BUILD_BUG_ON(WLAN_KEY_LEN_CCMP != WLAN_KEY_LEN_GCMP);
1763                         BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_CCMP);
1764                         conf.conf.keylen = WLAN_KEY_LEN_CCMP;
1765                         memcpy(conf.conf.key, status->gtk[0].key,
1766                                WLAN_KEY_LEN_CCMP);
1767                         break;
1768                 case WLAN_CIPHER_SUITE_GCMP_256:
1769                         BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_GCMP_256);
1770                         conf.conf.keylen = WLAN_KEY_LEN_GCMP_256;
1771                         memcpy(conf.conf.key, status->gtk[0].key,
1772                                WLAN_KEY_LEN_GCMP_256);
1773                         break;
1774                 case WLAN_CIPHER_SUITE_TKIP:
1775                         BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_TKIP);
1776                         conf.conf.keylen = WLAN_KEY_LEN_TKIP;
1777                         memcpy(conf.conf.key, status->gtk[0].key, 16);
1778                         /* leave TX MIC key zeroed, we don't use it anyway */
1779                         memcpy(conf.conf.key +
1780                                NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
1781                                status->gtk[0].tkip_mic_key, 8);
1782                         break;
1783                 }
1784
1785                 key = ieee80211_gtk_rekey_add(vif, &conf.conf);
1786                 if (IS_ERR(key))
1787                         return false;
1788                 iwl_mvm_set_key_rx_seq(mvm, key, status);
1789
1790                 replay_ctr =
1791                         cpu_to_be64(le64_to_cpu(status->replay_ctr));
1792
1793                 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid,
1794                                            (void *)&replay_ctr, GFP_KERNEL);
1795         }
1796
1797 out:
1798         if (iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP,
1799                                     WOWLAN_GET_STATUSES, 0) < 10) {
1800                 mvmvif->seqno_valid = true;
1801                 /* +0x10 because the set API expects next-to-use, not last-used */
1802                 mvmvif->seqno = le16_to_cpu(status->non_qos_seq_ctr) + 0x10;
1803         }
1804
1805         return true;
1806 }
1807
1808 /* Occasionally, templates would be nice. This is one of those times ... */
1809 #define iwl_mvm_parse_wowlan_status_common(_ver)                        \
1810 static struct iwl_wowlan_status *                                       \
1811 iwl_mvm_parse_wowlan_status_common_ ## _ver(struct iwl_mvm *mvm,        \
1812                                             void *_data, int len)       \
1813 {                                                                       \
1814         struct iwl_wowlan_status *status;                               \
1815         struct iwl_wowlan_status_ ##_ver *data = _data;                 \
1816         int data_size;                                                  \
1817                                                                         \
1818         if (len < sizeof(*data)) {                                      \
1819                 IWL_ERR(mvm, "Invalid WoWLAN status response!\n");      \
1820                 return ERR_PTR(-EIO);                                   \
1821         }                                                               \
1822                                                                         \
1823         data_size = ALIGN(le32_to_cpu(data->wake_packet_bufsize), 4);   \
1824         if (len != sizeof(*data) + data_size) {                         \
1825                 IWL_ERR(mvm, "Invalid WoWLAN status response!\n");      \
1826                 return ERR_PTR(-EIO);                                   \
1827         }                                                               \
1828                                                                         \
1829         status = kzalloc(sizeof(*status) + data_size, GFP_KERNEL);      \
1830         if (!status)                                                    \
1831                 return ERR_PTR(-ENOMEM);                                \
1832                                                                         \
1833         /* copy all the common fields */                                \
1834         status->replay_ctr = data->replay_ctr;                          \
1835         status->pattern_number = data->pattern_number;                  \
1836         status->non_qos_seq_ctr = data->non_qos_seq_ctr;                \
1837         memcpy(status->qos_seq_ctr, data->qos_seq_ctr,                  \
1838                sizeof(status->qos_seq_ctr));                            \
1839         status->wakeup_reasons = data->wakeup_reasons;                  \
1840         status->num_of_gtk_rekeys = data->num_of_gtk_rekeys;            \
1841         status->received_beacons = data->received_beacons;              \
1842         status->wake_packet_length = data->wake_packet_length;          \
1843         status->wake_packet_bufsize = data->wake_packet_bufsize;        \
1844         memcpy(status->wake_packet, data->wake_packet,                  \
1845                le32_to_cpu(status->wake_packet_bufsize));               \
1846                                                                         \
1847         return status;                                                  \
1848 }
1849
1850 iwl_mvm_parse_wowlan_status_common(v6)
1851 iwl_mvm_parse_wowlan_status_common(v7)
1852 iwl_mvm_parse_wowlan_status_common(v9)
1853
1854 static struct iwl_wowlan_status *
1855 iwl_mvm_send_wowlan_get_status(struct iwl_mvm *mvm, u8 sta_id)
1856 {
1857         struct iwl_wowlan_status *status;
1858         struct iwl_wowlan_get_status_cmd get_status_cmd = {
1859                 .sta_id = cpu_to_le32(sta_id),
1860         };
1861         struct iwl_host_cmd cmd = {
1862                 .id = WOWLAN_GET_STATUSES,
1863                 .flags = CMD_WANT_SKB,
1864                 .data = { &get_status_cmd, },
1865                 .len = { sizeof(get_status_cmd), },
1866         };
1867         int ret, len;
1868         u8 notif_ver;
1869         u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP,
1870                                            WOWLAN_GET_STATUSES,
1871                                            IWL_FW_CMD_VER_UNKNOWN);
1872
1873         if (cmd_ver == IWL_FW_CMD_VER_UNKNOWN)
1874                 cmd.len[0] = 0;
1875
1876         lockdep_assert_held(&mvm->mutex);
1877
1878         ret = iwl_mvm_send_cmd(mvm, &cmd);
1879         if (ret) {
1880                 IWL_ERR(mvm, "failed to query wakeup status (%d)\n", ret);
1881                 return ERR_PTR(ret);
1882         }
1883
1884         len = iwl_rx_packet_payload_len(cmd.resp_pkt);
1885
1886         /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */
1887         notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP,
1888                                             WOWLAN_GET_STATUSES, 0);
1889         if (!notif_ver)
1890                 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
1891                                                     WOWLAN_GET_STATUSES, 7);
1892
1893         if (!fw_has_api(&mvm->fw->ucode_capa,
1894                         IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL)) {
1895                 struct iwl_wowlan_status_v6 *v6 = (void *)cmd.resp_pkt->data;
1896
1897                 status = iwl_mvm_parse_wowlan_status_common_v6(mvm,
1898                                                                cmd.resp_pkt->data,
1899                                                                len);
1900                 if (IS_ERR(status))
1901                         goto out_free_resp;
1902
1903                 BUILD_BUG_ON(sizeof(v6->gtk.decrypt_key) >
1904                              sizeof(status->gtk[0].key));
1905                 BUILD_BUG_ON(sizeof(v6->gtk.tkip_mic_key) >
1906                              sizeof(status->gtk[0].tkip_mic_key));
1907
1908                 /* copy GTK info to the right place */
1909                 memcpy(status->gtk[0].key, v6->gtk.decrypt_key,
1910                        sizeof(v6->gtk.decrypt_key));
1911                 memcpy(status->gtk[0].tkip_mic_key, v6->gtk.tkip_mic_key,
1912                        sizeof(v6->gtk.tkip_mic_key));
1913                 memcpy(&status->gtk[0].rsc, &v6->gtk.rsc,
1914                        sizeof(status->gtk[0].rsc));
1915
1916                 /* hardcode the key length to 16 since v6 only supports 16 */
1917                 status->gtk[0].key_len = 16;
1918
1919                 /*
1920                  * The key index only uses 2 bits (values 0 to 3) and
1921                  * we always set bit 7 which means this is the
1922                  * currently used key.
1923                  */
1924                 status->gtk[0].key_flags = v6->gtk.key_index | BIT(7);
1925         } else if (notif_ver == 7) {
1926                 struct iwl_wowlan_status_v7 *v7 = (void *)cmd.resp_pkt->data;
1927
1928                 status = iwl_mvm_parse_wowlan_status_common_v7(mvm,
1929                                                                cmd.resp_pkt->data,
1930                                                                len);
1931                 if (IS_ERR(status))
1932                         goto out_free_resp;
1933
1934                 status->gtk[0] = v7->gtk[0];
1935                 status->igtk[0] = v7->igtk[0];
1936         } else if (notif_ver == 9 || notif_ver == 10 || notif_ver == 11) {
1937                 struct iwl_wowlan_status_v9 *v9 = (void *)cmd.resp_pkt->data;
1938
1939                 /* these three command versions have same layout and size, the
1940                  * difference is only in a few not used (reserved) fields.
1941                  */
1942                 status = iwl_mvm_parse_wowlan_status_common_v9(mvm,
1943                                                                cmd.resp_pkt->data,
1944                                                                len);
1945                 if (IS_ERR(status))
1946                         goto out_free_resp;
1947
1948                 status->gtk[0] = v9->gtk[0];
1949                 status->igtk[0] = v9->igtk[0];
1950
1951                 status->tid_tear_down = v9->tid_tear_down;
1952         } else {
1953                 IWL_ERR(mvm,
1954                         "Firmware advertises unknown WoWLAN status response %d!\n",
1955                         notif_ver);
1956                 status = ERR_PTR(-EIO);
1957         }
1958
1959 out_free_resp:
1960         iwl_free_resp(&cmd);
1961         return status;
1962 }
1963
1964 static struct iwl_wowlan_status *
1965 iwl_mvm_get_wakeup_status(struct iwl_mvm *mvm, u8 sta_id)
1966 {
1967         u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP,
1968                                            OFFLOADS_QUERY_CMD,
1969                                            IWL_FW_CMD_VER_UNKNOWN);
1970         __le32 station_id = cpu_to_le32(sta_id);
1971         u32 cmd_size = cmd_ver != IWL_FW_CMD_VER_UNKNOWN ? sizeof(station_id) : 0;
1972
1973         if (!mvm->net_detect) {
1974                 /* only for tracing for now */
1975                 int ret = iwl_mvm_send_cmd_pdu(mvm, OFFLOADS_QUERY_CMD, 0,
1976                                                cmd_size, &station_id);
1977                 if (ret)
1978                         IWL_ERR(mvm, "failed to query offload statistics (%d)\n", ret);
1979         }
1980
1981         return iwl_mvm_send_wowlan_get_status(mvm, sta_id);
1982 }
1983
1984 /* releases the MVM mutex */
1985 static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm,
1986                                          struct ieee80211_vif *vif)
1987 {
1988         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1989         struct iwl_wowlan_status_data status;
1990         struct iwl_wowlan_status *fw_status;
1991         int i;
1992         bool keep;
1993         struct iwl_mvm_sta *mvm_ap_sta;
1994
1995         fw_status = iwl_mvm_get_wakeup_status(mvm, mvmvif->ap_sta_id);
1996         if (IS_ERR_OR_NULL(fw_status))
1997                 goto out_unlock;
1998
1999         IWL_DEBUG_WOWLAN(mvm, "wakeup reason 0x%x\n",
2000                          le32_to_cpu(fw_status->wakeup_reasons));
2001
2002         status.pattern_number = le16_to_cpu(fw_status->pattern_number);
2003         for (i = 0; i < 8; i++)
2004                 status.qos_seq_ctr[i] =
2005                         le16_to_cpu(fw_status->qos_seq_ctr[i]);
2006         status.wakeup_reasons = le32_to_cpu(fw_status->wakeup_reasons);
2007         status.wake_packet_length =
2008                 le32_to_cpu(fw_status->wake_packet_length);
2009         status.wake_packet_bufsize =
2010                 le32_to_cpu(fw_status->wake_packet_bufsize);
2011         status.wake_packet = fw_status->wake_packet;
2012
2013         /* still at hard-coded place 0 for D3 image */
2014         mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, 0);
2015         if (!mvm_ap_sta)
2016                 goto out_free;
2017
2018         for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
2019                 u16 seq = status.qos_seq_ctr[i];
2020                 /* firmware stores last-used value, we store next value */
2021                 seq += 0x10;
2022                 mvm_ap_sta->tid_data[i].seq_number = seq;
2023         }
2024
2025         if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000) {
2026                 i = mvm->offload_tid;
2027                 iwl_trans_set_q_ptrs(mvm->trans,
2028                                      mvm_ap_sta->tid_data[i].txq_id,
2029                                      mvm_ap_sta->tid_data[i].seq_number >> 4);
2030         }
2031
2032         /* now we have all the data we need, unlock to avoid mac80211 issues */
2033         mutex_unlock(&mvm->mutex);
2034
2035         iwl_mvm_report_wakeup_reasons(mvm, vif, &status);
2036
2037         keep = iwl_mvm_setup_connection_keep(mvm, vif, fw_status);
2038
2039         kfree(fw_status);
2040         return keep;
2041
2042 out_free:
2043         kfree(fw_status);
2044 out_unlock:
2045         mutex_unlock(&mvm->mutex);
2046         return false;
2047 }
2048
2049 #define ND_QUERY_BUF_LEN (sizeof(struct iwl_scan_offload_profile_match) * \
2050                           IWL_SCAN_MAX_PROFILES)
2051
2052 struct iwl_mvm_nd_query_results {
2053         u32 matched_profiles;
2054         u8 matches[ND_QUERY_BUF_LEN];
2055 };
2056
2057 static int
2058 iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm,
2059                                 struct iwl_mvm_nd_query_results *results)
2060 {
2061         struct iwl_scan_offload_profiles_query *query;
2062         struct iwl_host_cmd cmd = {
2063                 .id = SCAN_OFFLOAD_PROFILES_QUERY_CMD,
2064                 .flags = CMD_WANT_SKB,
2065         };
2066         int ret, len;
2067         size_t query_len, matches_len;
2068         int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw);
2069
2070         ret = iwl_mvm_send_cmd(mvm, &cmd);
2071         if (ret) {
2072                 IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret);
2073                 return ret;
2074         }
2075
2076         if (fw_has_api(&mvm->fw->ucode_capa,
2077                        IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2078                 query_len = sizeof(struct iwl_scan_offload_profiles_query);
2079                 matches_len = sizeof(struct iwl_scan_offload_profile_match) *
2080                         max_profiles;
2081         } else {
2082                 query_len = sizeof(struct iwl_scan_offload_profiles_query_v1);
2083                 matches_len = sizeof(struct iwl_scan_offload_profile_match_v1) *
2084                         max_profiles;
2085         }
2086
2087         len = iwl_rx_packet_payload_len(cmd.resp_pkt);
2088         if (len < query_len) {
2089                 IWL_ERR(mvm, "Invalid scan offload profiles query response!\n");
2090                 ret = -EIO;
2091                 goto out_free_resp;
2092         }
2093
2094         query = (void *)cmd.resp_pkt->data;
2095
2096         results->matched_profiles = le32_to_cpu(query->matched_profiles);
2097         memcpy(results->matches, query->matches, matches_len);
2098
2099 #ifdef CONFIG_IWLWIFI_DEBUGFS
2100         mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done);
2101 #endif
2102
2103 out_free_resp:
2104         iwl_free_resp(&cmd);
2105         return ret;
2106 }
2107
2108 static int iwl_mvm_query_num_match_chans(struct iwl_mvm *mvm,
2109                                          struct iwl_mvm_nd_query_results *query,
2110                                          int idx)
2111 {
2112         int n_chans = 0, i;
2113
2114         if (fw_has_api(&mvm->fw->ucode_capa,
2115                        IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2116                 struct iwl_scan_offload_profile_match *matches =
2117                         (struct iwl_scan_offload_profile_match *)query->matches;
2118
2119                 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; i++)
2120                         n_chans += hweight8(matches[idx].matching_channels[i]);
2121         } else {
2122                 struct iwl_scan_offload_profile_match_v1 *matches =
2123                         (struct iwl_scan_offload_profile_match_v1 *)query->matches;
2124
2125                 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1; i++)
2126                         n_chans += hweight8(matches[idx].matching_channels[i]);
2127         }
2128
2129         return n_chans;
2130 }
2131
2132 static void iwl_mvm_query_set_freqs(struct iwl_mvm *mvm,
2133                                     struct iwl_mvm_nd_query_results *query,
2134                                     struct cfg80211_wowlan_nd_match *match,
2135                                     int idx)
2136 {
2137         int i;
2138
2139         if (fw_has_api(&mvm->fw->ucode_capa,
2140                        IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
2141                 struct iwl_scan_offload_profile_match *matches =
2142                         (struct iwl_scan_offload_profile_match *)query->matches;
2143
2144                 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; i++)
2145                         if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
2146                                 match->channels[match->n_channels++] =
2147                                         mvm->nd_channels[i]->center_freq;
2148         } else {
2149                 struct iwl_scan_offload_profile_match_v1 *matches =
2150                         (struct iwl_scan_offload_profile_match_v1 *)query->matches;
2151
2152                 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1 * 8; i++)
2153                         if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
2154                                 match->channels[match->n_channels++] =
2155                                         mvm->nd_channels[i]->center_freq;
2156         }
2157 }
2158
2159 static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm,
2160                                             struct ieee80211_vif *vif)
2161 {
2162         struct cfg80211_wowlan_nd_info *net_detect = NULL;
2163         struct cfg80211_wowlan_wakeup wakeup = {
2164                 .pattern_idx = -1,
2165         };
2166         struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
2167         struct iwl_mvm_nd_query_results query;
2168         struct iwl_wowlan_status *fw_status;
2169         unsigned long matched_profiles;
2170         u32 reasons = 0;
2171         int i, n_matches, ret;
2172
2173         fw_status = iwl_mvm_get_wakeup_status(mvm, IWL_MVM_INVALID_STA);
2174         if (!IS_ERR_OR_NULL(fw_status)) {
2175                 reasons = le32_to_cpu(fw_status->wakeup_reasons);
2176                 kfree(fw_status);
2177         }
2178
2179         if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
2180                 wakeup.rfkill_release = true;
2181
2182         if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS)
2183                 goto out;
2184
2185         ret = iwl_mvm_netdetect_query_results(mvm, &query);
2186         if (ret || !query.matched_profiles) {
2187                 wakeup_report = NULL;
2188                 goto out;
2189         }
2190
2191         matched_profiles = query.matched_profiles;
2192         if (mvm->n_nd_match_sets) {
2193                 n_matches = hweight_long(matched_profiles);
2194         } else {
2195                 IWL_ERR(mvm, "no net detect match information available\n");
2196                 n_matches = 0;
2197         }
2198
2199         net_detect = kzalloc(struct_size(net_detect, matches, n_matches),
2200                              GFP_KERNEL);
2201         if (!net_detect || !n_matches)
2202                 goto out_report_nd;
2203
2204         for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) {
2205                 struct cfg80211_wowlan_nd_match *match;
2206                 int idx, n_channels = 0;
2207
2208                 n_channels = iwl_mvm_query_num_match_chans(mvm, &query, i);
2209
2210                 match = kzalloc(struct_size(match, channels, n_channels),
2211                                 GFP_KERNEL);
2212                 if (!match)
2213                         goto out_report_nd;
2214
2215                 net_detect->matches[net_detect->n_matches++] = match;
2216
2217                 /* We inverted the order of the SSIDs in the scan
2218                  * request, so invert the index here.
2219                  */
2220                 idx = mvm->n_nd_match_sets - i - 1;
2221                 match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len;
2222                 memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid,
2223                        match->ssid.ssid_len);
2224
2225                 if (mvm->n_nd_channels < n_channels)
2226                         continue;
2227
2228                 iwl_mvm_query_set_freqs(mvm, &query, match, i);
2229         }
2230
2231 out_report_nd:
2232         wakeup.net_detect = net_detect;
2233 out:
2234         iwl_mvm_free_nd(mvm);
2235
2236         mutex_unlock(&mvm->mutex);
2237         ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
2238
2239         if (net_detect) {
2240                 for (i = 0; i < net_detect->n_matches; i++)
2241                         kfree(net_detect->matches[i]);
2242                 kfree(net_detect);
2243         }
2244 }
2245
2246 static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac,
2247                                        struct ieee80211_vif *vif)
2248 {
2249         /* skip the one we keep connection on */
2250         if (data == vif)
2251                 return;
2252
2253         if (vif->type == NL80211_IFTYPE_STATION)
2254                 ieee80211_resume_disconnect(vif);
2255 }
2256
2257 static bool iwl_mvm_rt_status(struct iwl_trans *trans, u32 base, u32 *err_id)
2258 {
2259         struct error_table_start {
2260                 /* cf. struct iwl_error_event_table */
2261                 u32 valid;
2262                 __le32 err_id;
2263         } err_info;
2264
2265         if (!base)
2266                 return false;
2267
2268         iwl_trans_read_mem_bytes(trans, base,
2269                                  &err_info, sizeof(err_info));
2270         if (err_info.valid && err_id)
2271                 *err_id = le32_to_cpu(err_info.err_id);
2272
2273         return !!err_info.valid;
2274 }
2275
2276 static bool iwl_mvm_check_rt_status(struct iwl_mvm *mvm,
2277                                    struct ieee80211_vif *vif)
2278 {
2279         u32 err_id;
2280
2281         /* check for lmac1 error */
2282         if (iwl_mvm_rt_status(mvm->trans,
2283                               mvm->trans->dbg.lmac_error_event_table[0],
2284                               &err_id)) {
2285                 if (err_id == RF_KILL_INDICATOR_FOR_WOWLAN) {
2286                         struct cfg80211_wowlan_wakeup wakeup = {
2287                                 .rfkill_release = true,
2288                         };
2289                         ieee80211_report_wowlan_wakeup(vif, &wakeup,
2290                                                        GFP_KERNEL);
2291                 }
2292                 return true;
2293         }
2294
2295         /* check if we have lmac2 set and check for error */
2296         if (iwl_mvm_rt_status(mvm->trans,
2297                               mvm->trans->dbg.lmac_error_event_table[1], NULL))
2298                 return true;
2299
2300         /* check for umac error */
2301         if (iwl_mvm_rt_status(mvm->trans,
2302                               mvm->trans->dbg.umac_error_event_table, NULL))
2303                 return true;
2304
2305         return false;
2306 }
2307
2308 static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test)
2309 {
2310         struct ieee80211_vif *vif = NULL;
2311         int ret = 1;
2312         enum iwl_d3_status d3_status;
2313         bool keep = false;
2314         bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
2315                                          IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2316         bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa,
2317                                       IWL_UCODE_TLV_CAPA_D0I3_END_FIRST);
2318
2319         mutex_lock(&mvm->mutex);
2320
2321         mvm->last_reset_or_resume_time_jiffies = jiffies;
2322
2323         /* get the BSS vif pointer again */
2324         vif = iwl_mvm_get_bss_vif(mvm);
2325         if (IS_ERR_OR_NULL(vif))
2326                 goto err;
2327
2328         iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
2329
2330         if (iwl_mvm_check_rt_status(mvm, vif)) {
2331                 set_bit(STATUS_FW_ERROR, &mvm->trans->status);
2332                 iwl_mvm_dump_nic_error_log(mvm);
2333                 iwl_dbg_tlv_time_point(&mvm->fwrt,
2334                                        IWL_FW_INI_TIME_POINT_FW_ASSERT, NULL);
2335                 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert,
2336                                         false, 0);
2337                 ret = 1;
2338                 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
2339                 goto err;
2340         }
2341
2342         ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, !unified_image);
2343         if (ret)
2344                 goto err;
2345
2346         if (d3_status != IWL_D3_STATUS_ALIVE) {
2347                 IWL_INFO(mvm, "Device was reset during suspend\n");
2348                 goto err;
2349         }
2350
2351         if (d0i3_first) {
2352                 struct iwl_host_cmd cmd = {
2353                         .id = D0I3_END_CMD,
2354                         .flags = CMD_WANT_SKB | CMD_SEND_IN_D3,
2355                 };
2356                 int len;
2357
2358                 ret = iwl_mvm_send_cmd(mvm, &cmd);
2359                 if (ret < 0) {
2360                         IWL_ERR(mvm, "Failed to send D0I3_END_CMD first (%d)\n",
2361                                 ret);
2362                         goto err;
2363                 }
2364                 switch (mvm->cmd_ver.d0i3_resp) {
2365                 case 0:
2366                         break;
2367                 case 1:
2368                         len = iwl_rx_packet_payload_len(cmd.resp_pkt);
2369                         if (len != sizeof(u32)) {
2370                                 IWL_ERR(mvm,
2371                                         "Error with D0I3_END_CMD response size (%d)\n",
2372                                         len);
2373                                 goto err;
2374                         }
2375                         if (IWL_D0I3_RESET_REQUIRE &
2376                             le32_to_cpu(*(__le32 *)cmd.resp_pkt->data)) {
2377                                 iwl_write32(mvm->trans, CSR_RESET,
2378                                             CSR_RESET_REG_FLAG_FORCE_NMI);
2379                                 iwl_free_resp(&cmd);
2380                         }
2381                         break;
2382                 default:
2383                         WARN_ON(1);
2384                 }
2385         }
2386
2387         mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
2388
2389         /*
2390          * Query the current location and source from the D3 firmware so we
2391          * can play it back when we re-intiailize the D0 firmware
2392          */
2393         iwl_mvm_update_changed_regdom(mvm);
2394
2395         /* Re-configure PPAG settings */
2396         iwl_mvm_ppag_send_cmd(mvm);
2397
2398         if (!unified_image)
2399                 /*  Re-configure default SAR profile */
2400                 iwl_mvm_sar_select_profile(mvm, 1, 1);
2401
2402         if (mvm->net_detect) {
2403                 /* If this is a non-unified image, we restart the FW,
2404                  * so no need to stop the netdetect scan.  If that
2405                  * fails, continue and try to get the wake-up reasons,
2406                  * but trigger a HW restart by keeping a failure code
2407                  * in ret.
2408                  */
2409                 if (unified_image)
2410                         ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT,
2411                                                 false);
2412
2413                 iwl_mvm_query_netdetect_reasons(mvm, vif);
2414                 /* has unlocked the mutex, so skip that */
2415                 goto out;
2416         } else {
2417                 keep = iwl_mvm_query_wakeup_reasons(mvm, vif);
2418 #ifdef CONFIG_IWLWIFI_DEBUGFS
2419                 if (keep)
2420                         mvm->keep_vif = vif;
2421 #endif
2422                 /* has unlocked the mutex, so skip that */
2423                 goto out_iterate;
2424         }
2425
2426 err:
2427         iwl_mvm_free_nd(mvm);
2428         mutex_unlock(&mvm->mutex);
2429
2430 out_iterate:
2431         if (!test)
2432                 ieee80211_iterate_active_interfaces_mtx(mvm->hw,
2433                         IEEE80211_IFACE_ITER_NORMAL,
2434                         iwl_mvm_d3_disconnect_iter, keep ? vif : NULL);
2435
2436 out:
2437         clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
2438
2439         /* no need to reset the device in unified images, if successful */
2440         if (unified_image && !ret) {
2441                 /* nothing else to do if we already sent D0I3_END_CMD */
2442                 if (d0i3_first)
2443                         return 0;
2444
2445                 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL);
2446                 if (!ret)
2447                         return 0;
2448         }
2449
2450         /*
2451          * Reconfigure the device in one of the following cases:
2452          * 1. We are not using a unified image
2453          * 2. We are using a unified image but had an error while exiting D3
2454          */
2455         set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
2456
2457         return 1;
2458 }
2459
2460 int iwl_mvm_resume(struct ieee80211_hw *hw)
2461 {
2462         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2463         int ret;
2464
2465         ret = __iwl_mvm_resume(mvm, false);
2466
2467         iwl_mvm_resume_tcm(mvm);
2468
2469         iwl_fw_runtime_resume(&mvm->fwrt);
2470
2471         return ret;
2472 }
2473
2474 void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled)
2475 {
2476         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2477
2478         device_set_wakeup_enable(mvm->trans->dev, enabled);
2479 }
2480
2481 #ifdef CONFIG_IWLWIFI_DEBUGFS
2482 static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file)
2483 {
2484         struct iwl_mvm *mvm = inode->i_private;
2485         int err;
2486
2487         if (mvm->d3_test_active)
2488                 return -EBUSY;
2489
2490         file->private_data = inode->i_private;
2491
2492         iwl_mvm_pause_tcm(mvm, true);
2493
2494         iwl_fw_runtime_suspend(&mvm->fwrt);
2495
2496         /* start pseudo D3 */
2497         rtnl_lock();
2498         err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true);
2499         rtnl_unlock();
2500         if (err > 0)
2501                 err = -EINVAL;
2502         if (err)
2503                 return err;
2504
2505         mvm->d3_test_active = true;
2506         mvm->keep_vif = NULL;
2507         return 0;
2508 }
2509
2510 static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf,
2511                                     size_t count, loff_t *ppos)
2512 {
2513         struct iwl_mvm *mvm = file->private_data;
2514         u32 pme_asserted;
2515
2516         while (true) {
2517                 /* read pme_ptr if available */
2518                 if (mvm->d3_test_pme_ptr) {
2519                         pme_asserted = iwl_trans_read_mem32(mvm->trans,
2520                                                 mvm->d3_test_pme_ptr);
2521                         if (pme_asserted)
2522                                 break;
2523                 }
2524
2525                 if (msleep_interruptible(100))
2526                         break;
2527         }
2528
2529         return 0;
2530 }
2531
2532 static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac,
2533                                               struct ieee80211_vif *vif)
2534 {
2535         /* skip the one we keep connection on */
2536         if (_data == vif)
2537                 return;
2538
2539         if (vif->type == NL80211_IFTYPE_STATION)
2540                 ieee80211_connection_loss(vif);
2541 }
2542
2543 static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file)
2544 {
2545         struct iwl_mvm *mvm = inode->i_private;
2546         bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
2547                                          IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2548
2549         mvm->d3_test_active = false;
2550
2551         iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
2552
2553         rtnl_lock();
2554         __iwl_mvm_resume(mvm, true);
2555         rtnl_unlock();
2556
2557         iwl_mvm_resume_tcm(mvm);
2558
2559         iwl_fw_runtime_resume(&mvm->fwrt);
2560
2561         iwl_abort_notification_waits(&mvm->notif_wait);
2562         if (!unified_image) {
2563                 int remaining_time = 10;
2564
2565                 ieee80211_restart_hw(mvm->hw);
2566
2567                 /* wait for restart and disconnect all interfaces */
2568                 while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2569                        remaining_time > 0) {
2570                         remaining_time--;
2571                         msleep(1000);
2572                 }
2573
2574                 if (remaining_time == 0)
2575                         IWL_ERR(mvm, "Timed out waiting for HW restart!\n");
2576         }
2577
2578         ieee80211_iterate_active_interfaces_atomic(
2579                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
2580                 iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif);
2581
2582         return 0;
2583 }
2584
2585 const struct file_operations iwl_dbgfs_d3_test_ops = {
2586         .llseek = no_llseek,
2587         .open = iwl_mvm_d3_test_open,
2588         .read = iwl_mvm_d3_test_read,
2589         .release = iwl_mvm_d3_test_release,
2590 };
2591 #endif