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

   1 /******************************************************************************
   2  *
   3  * This file is provided under a dual BSD/GPLv2 license.  When using or
   4  * redistributing this file, you may do so under either license.
   5  *
   6  * GPL LICENSE SUMMARY
   7  *
   8  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
   9  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  10  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
  11  * Copyright(c) 2018 - 2019 Intel Corporation
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of version 2 of the GNU General Public License as
  15  * published by the Free Software Foundation.
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  30  *
  31  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  32  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  33  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
  34  * Copyright(c) 2018 - 2019 Intel Corporation
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  45  *    the documentation and/or other materials provided with the
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  49  *    from this software without specific prior written permission.
  50  *
  51  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  52  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  53  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  54  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  55  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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  60  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  61  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  62  *
  63  *****************************************************************************/
  64
  65 #include <linux/etherdevice.h>
  66 #include <linux/ip.h>
  67 #include <linux/fs.h>
  68 #include <net/cfg80211.h>
  69 #include <net/ipv6.h>
  70 #include <net/tcp.h>
  71 #include <net/addrconf.h>
  72 #include "iwl-modparams.h"
  73 #include "fw-api.h"
  74 #include "mvm.h"
  75
  76 void iwl_mvm_set_rekey_data(struct ieee80211_hw *hw,
  77                             struct ieee80211_vif *vif,
  78                             struct cfg80211_gtk_rekey_data *data)
  79 {
  80         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
  81         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
  82
  83         if (iwlwifi_mod_params.swcrypto)
  84                 return;
  85
  86         mutex_lock(&mvm->mutex);
  87
  88         memcpy(mvmvif->rekey_data.kek, data->kek, NL80211_KEK_LEN);
  89         memcpy(mvmvif->rekey_data.kck, data->kck, NL80211_KCK_LEN);
  90         mvmvif->rekey_data.replay_ctr =
  91                 cpu_to_le64(be64_to_cpup((__be64 *)data->replay_ctr));
  92         mvmvif->rekey_data.valid = true;
  93
  94         mutex_unlock(&mvm->mutex);
  95 }
  96
  97 #if IS_ENABLED(CONFIG_IPV6)
  98 void iwl_mvm_ipv6_addr_change(struct ieee80211_hw *hw,
  99                               struct ieee80211_vif *vif,
 100                               struct inet6_dev *idev)
 101 {
 102         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 103         struct inet6_ifaddr *ifa;
 104         int idx = 0;
 105
 106         memset(mvmvif->tentative_addrs, 0, sizeof(mvmvif->tentative_addrs));
 107
 108         read_lock_bh(&idev->lock);
 109         list_for_each_entry(ifa, &idev->addr_list, if_list) {
 110                 mvmvif->target_ipv6_addrs[idx] = ifa->addr;
 111                 if (ifa->flags & IFA_F_TENTATIVE)
 112                         __set_bit(idx, mvmvif->tentative_addrs);
 113                 idx++;
 114                 if (idx >= IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_MAX)
 115                         break;
 116         }
 117         read_unlock_bh(&idev->lock);
 118
 119         mvmvif->num_target_ipv6_addrs = idx;
 120 }
 121 #endif
 122
 123 void iwl_mvm_set_default_unicast_key(struct ieee80211_hw *hw,
 124                                      struct ieee80211_vif *vif, int idx)
 125 {
 126         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 127
 128         mvmvif->tx_key_idx = idx;
 129 }
 130
 131 static void iwl_mvm_convert_p1k(u16 *p1k, __le16 *out)
 132 {
 133         int i;
 134
 135         for (i = 0; i < IWL_P1K_SIZE; i++)
 136                 out[i] = cpu_to_le16(p1k[i]);
 137 }
 138
 139 static const u8 *iwl_mvm_find_max_pn(struct ieee80211_key_conf *key,
 140                                      struct iwl_mvm_key_pn *ptk_pn,
 141                                      struct ieee80211_key_seq *seq,
 142                                      int tid, int queues)
 143 {
 144         const u8 *ret = seq->ccmp.pn;
 145         int i;
 146
 147         /* get the PN from mac80211, used on the default queue */
 148         ieee80211_get_key_rx_seq(key, tid, seq);
 149
 150         /* and use the internal data for the other queues */
 151         for (i = 1; i < queues; i++) {
 152                 const u8 *tmp = ptk_pn->q[i].pn[tid];
 153
 154                 if (memcmp(ret, tmp, IEEE80211_CCMP_PN_LEN) <= 0)
 155                         ret = tmp;
 156         }
 157
 158         return ret;
 159 }
 160
 161 struct wowlan_key_data {
 162         struct iwl_wowlan_rsc_tsc_params_cmd *rsc_tsc;
 163         struct iwl_wowlan_tkip_params_cmd *tkip;
 164         bool error, use_rsc_tsc, use_tkip, configure_keys;
 165         int wep_key_idx;
 166 };
 167
 168 static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw,
 169                                         struct ieee80211_vif *vif,
 170                                         struct ieee80211_sta *sta,
 171                                         struct ieee80211_key_conf *key,
 172                                         void *_data)
 173 {
 174         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 175         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 176         struct wowlan_key_data *data = _data;
 177         struct aes_sc *aes_sc, *aes_tx_sc = NULL;
 178         struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
 179         struct iwl_p1k_cache *rx_p1ks;
 180         u8 *rx_mic_key;
 181         struct ieee80211_key_seq seq;
 182         u32 cur_rx_iv32 = 0;
 183         u16 p1k[IWL_P1K_SIZE];
 184         int ret, i;
 185
 186         switch (key->cipher) {
 187         case WLAN_CIPHER_SUITE_WEP40:
 188         case WLAN_CIPHER_SUITE_WEP104: { /* hack it for now */
 189                 struct {
 190                         struct iwl_mvm_wep_key_cmd wep_key_cmd;
 191                         struct iwl_mvm_wep_key wep_key;
 192                 } __packed wkc = {
 193                         .wep_key_cmd.mac_id_n_color =
 194                                 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
 195                                                                 mvmvif->color)),
 196                         .wep_key_cmd.num_keys = 1,
 197                         /* firmware sets STA_KEY_FLG_WEP_13BYTES */
 198                         .wep_key_cmd.decryption_type = STA_KEY_FLG_WEP,
 199                         .wep_key.key_index = key->keyidx,
 200                         .wep_key.key_size = key->keylen,
 201                 };
 202
 203                 /*
 204                  * This will fail -- the key functions don't set support
 205                  * pairwise WEP keys. However, that's better than silently
 206                  * failing WoWLAN. Or maybe not?
 207                  */
 208                 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
 209                         break;
 210
 211                 memcpy(&wkc.wep_key.key[3], key->key, key->keylen);
 212                 if (key->keyidx == mvmvif->tx_key_idx) {
 213                         /* TX key must be at offset 0 */
 214                         wkc.wep_key.key_offset = 0;
 215                 } else {
 216                         /* others start at 1 */
 217                         data->wep_key_idx++;
 218                         wkc.wep_key.key_offset = data->wep_key_idx;
 219                 }
 220
 221                 if (data->configure_keys) {
 222                         mutex_lock(&mvm->mutex);
 223                         ret = iwl_mvm_send_cmd_pdu(mvm, WEP_KEY, 0,
 224                                                    sizeof(wkc), &wkc);
 225                         data->error = ret != 0;
 226
 227                         mvm->ptk_ivlen = key->iv_len;
 228                         mvm->ptk_icvlen = key->icv_len;
 229                         mvm->gtk_ivlen = key->iv_len;
 230                         mvm->gtk_icvlen = key->icv_len;
 231                         mutex_unlock(&mvm->mutex);
 232                 }
 233
 234                 /* don't upload key again */
 235                 return;
 236         }
 237         default:
 238                 data->error = true;
 239                 return;
 240         case WLAN_CIPHER_SUITE_AES_CMAC:
 241                 /*
 242                  * Ignore CMAC keys -- the WoWLAN firmware doesn't support them
 243                  * but we also shouldn't abort suspend due to that. It does have
 244                  * support for the IGTK key renewal, but doesn't really use the
 245                  * IGTK for anything. This means we could spuriously wake up or
 246                  * be deauthenticated, but that was considered acceptable.
 247                  */
 248                 return;
 249         case WLAN_CIPHER_SUITE_TKIP:
 250                 if (sta) {
 251                         u64 pn64;
 252
 253                         tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
 254                         tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
 255
 256                         rx_p1ks = data->tkip->rx_uni;
 257
 258                         pn64 = atomic64_read(&key->tx_pn);
 259                         tkip_tx_sc->iv16 = cpu_to_le16(TKIP_PN_TO_IV16(pn64));
 260                         tkip_tx_sc->iv32 = cpu_to_le32(TKIP_PN_TO_IV32(pn64));
 261
 262                         ieee80211_get_tkip_p1k_iv(key, TKIP_PN_TO_IV32(pn64),
 263                                                   p1k);
 264                         iwl_mvm_convert_p1k(p1k, data->tkip->tx.p1k);
 265
 266                         memcpy(data->tkip->mic_keys.tx,
 267                                &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
 268                                IWL_MIC_KEY_SIZE);
 269
 270                         rx_mic_key = data->tkip->mic_keys.rx_unicast;
 271                 } else {
 272                         tkip_sc =
 273                                 data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc;
 274                         rx_p1ks = data->tkip->rx_multi;
 275                         rx_mic_key = data->tkip->mic_keys.rx_mcast;
 276                 }
 277
 278                 /*
 279                  * For non-QoS this relies on the fact that both the uCode and
 280                  * mac80211 use TID 0 (as they need to to avoid replay attacks)
 281                  * for checking the IV in the frames.
 282                  */
 283                 for (i = 0; i < IWL_NUM_RSC; i++) {
 284                         ieee80211_get_key_rx_seq(key, i, &seq);
 285                         tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
 286                         tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
 287                         /* wrapping isn't allowed, AP must rekey */
 288                         if (seq.tkip.iv32 > cur_rx_iv32)
 289                                 cur_rx_iv32 = seq.tkip.iv32;
 290                 }
 291
 292                 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
 293                                           cur_rx_iv32, p1k);
 294                 iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k);
 295                 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
 296                                           cur_rx_iv32 + 1, p1k);
 297                 iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k);
 298
 299                 memcpy(rx_mic_key,
 300                        &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
 301                        IWL_MIC_KEY_SIZE);
 302
 303                 data->use_tkip = true;
 304                 data->use_rsc_tsc = true;
 305                 break;
 306         case WLAN_CIPHER_SUITE_CCMP:
 307                 if (sta) {
 308                         u64 pn64;
 309
 310                         aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
 311                         aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc;
 312
 313                         pn64 = atomic64_read(&key->tx_pn);
 314                         aes_tx_sc->pn = cpu_to_le64(pn64);
 315                 } else {
 316                         aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
 317                 }
 318
 319                 /*
 320                  * For non-QoS this relies on the fact that both the uCode and
 321                  * mac80211/our RX code use TID 0 for checking the PN.
 322                  */
 323                 if (sta && iwl_mvm_has_new_rx_api(mvm)) {
 324                         struct iwl_mvm_sta *mvmsta;
 325                         struct iwl_mvm_key_pn *ptk_pn;
 326                         const u8 *pn;
 327
 328                         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 329                         ptk_pn = rcu_dereference_protected(
 330                                                 mvmsta->ptk_pn[key->keyidx],
 331                                                 lockdep_is_held(&mvm->mutex));
 332                         if (WARN_ON(!ptk_pn))
 333                                 break;
 334
 335                         for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
 336                                 pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i,
 337                                                 mvm->trans->num_rx_queues);
 338                                 aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
 339                                                            ((u64)pn[4] << 8) |
 340                                                            ((u64)pn[3] << 16) |
 341                                                            ((u64)pn[2] << 24) |
 342                                                            ((u64)pn[1] << 32) |
 343                                                            ((u64)pn[0] << 40));
 344                         }
 345                 } else {
 346                         for (i = 0; i < IWL_NUM_RSC; i++) {
 347                                 u8 *pn = seq.ccmp.pn;
 348
 349                                 ieee80211_get_key_rx_seq(key, i, &seq);
 350                                 aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
 351                                                            ((u64)pn[4] << 8) |
 352                                                            ((u64)pn[3] << 16) |
 353                                                            ((u64)pn[2] << 24) |
 354                                                            ((u64)pn[1] << 32) |
 355                                                            ((u64)pn[0] << 40));
 356                         }
 357                 }
 358                 data->use_rsc_tsc = true;
 359                 break;
 360         }
 361
 362         if (data->configure_keys) {
 363                 mutex_lock(&mvm->mutex);
 364                 /*
 365                  * The D3 firmware hardcodes the key offset 0 as the key it
 366                  * uses to transmit packets to the AP, i.e. the PTK.
 367                  */
 368                 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
 369                         mvm->ptk_ivlen = key->iv_len;
 370                         mvm->ptk_icvlen = key->icv_len;
 371                         ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 0);
 372                 } else {
 373                         /*
 374                          * firmware only supports TSC/RSC for a single key,
 375                          * so if there are multiple keep overwriting them
 376                          * with new ones -- this relies on mac80211 doing
 377                          * list_add_tail().
 378                          */
 379                         mvm->gtk_ivlen = key->iv_len;
 380                         mvm->gtk_icvlen = key->icv_len;
 381                         ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 1);
 382                 }
 383                 mutex_unlock(&mvm->mutex);
 384                 data->error = ret != 0;
 385         }
 386 }
 387
 388 static int iwl_mvm_send_patterns_v1(struct iwl_mvm *mvm,
 389                                     struct cfg80211_wowlan *wowlan)
 390 {
 391         struct iwl_wowlan_patterns_cmd_v1 *pattern_cmd;
 392         struct iwl_host_cmd cmd = {
 393                 .id = WOWLAN_PATTERNS,
 394                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
 395         };
 396         int i, err;
 397
 398         if (!wowlan->n_patterns)
 399                 return 0;
 400
 401         cmd.len[0] = struct_size(pattern_cmd, patterns, wowlan->n_patterns);
 402
 403         pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
 404         if (!pattern_cmd)
 405                 return -ENOMEM;
 406
 407         pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
 408
 409         for (i = 0; i < wowlan->n_patterns; i++) {
 410                 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
 411
 412                 memcpy(&pattern_cmd->patterns[i].mask,
 413                        wowlan->patterns[i].mask, mask_len);
 414                 memcpy(&pattern_cmd->patterns[i].pattern,
 415                        wowlan->patterns[i].pattern,
 416                        wowlan->patterns[i].pattern_len);
 417                 pattern_cmd->patterns[i].mask_size = mask_len;
 418                 pattern_cmd->patterns[i].pattern_size =
 419                         wowlan->patterns[i].pattern_len;
 420         }
 421
 422         cmd.data[0] = pattern_cmd;
 423         err = iwl_mvm_send_cmd(mvm, &cmd);
 424         kfree(pattern_cmd);
 425         return err;
 426 }
 427
 428 static int iwl_mvm_send_patterns(struct iwl_mvm *mvm,
 429                                  struct cfg80211_wowlan *wowlan)
 430 {
 431         struct iwl_wowlan_patterns_cmd *pattern_cmd;
 432         struct iwl_host_cmd cmd = {
 433                 .id = WOWLAN_PATTERNS,
 434                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
 435         };
 436         int i, err;
 437
 438         if (!wowlan->n_patterns)
 439                 return 0;
 440
 441         cmd.len[0] = sizeof(*pattern_cmd) +
 442                 wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern_v2);
 443
 444         pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
 445         if (!pattern_cmd)
 446                 return -ENOMEM;
 447
 448         pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
 449
 450         for (i = 0; i < wowlan->n_patterns; i++) {
 451                 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
 452
 453                 pattern_cmd->patterns[i].pattern_type =
 454                         WOWLAN_PATTERN_TYPE_BITMASK;
 455
 456                 memcpy(&pattern_cmd->patterns[i].u.bitmask.mask,
 457                        wowlan->patterns[i].mask, mask_len);
 458                 memcpy(&pattern_cmd->patterns[i].u.bitmask.pattern,
 459                        wowlan->patterns[i].pattern,
 460                        wowlan->patterns[i].pattern_len);
 461                 pattern_cmd->patterns[i].u.bitmask.mask_size = mask_len;
 462                 pattern_cmd->patterns[i].u.bitmask.pattern_size =
 463                         wowlan->patterns[i].pattern_len;
 464         }
 465
 466         cmd.data[0] = pattern_cmd;
 467         err = iwl_mvm_send_cmd(mvm, &cmd);
 468         kfree(pattern_cmd);
 469         return err;
 470 }
 471
 472 static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 473                                 struct ieee80211_sta *ap_sta)
 474 {
 475         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 476         struct ieee80211_chanctx_conf *ctx;
 477         u8 chains_static, chains_dynamic;
 478         struct cfg80211_chan_def chandef;
 479         int ret, i;
 480         struct iwl_binding_cmd_v1 binding_cmd = {};
 481         struct iwl_time_quota_cmd quota_cmd = {};
 482         struct iwl_time_quota_data *quota;
 483         u32 status;
 484
 485         if (WARN_ON_ONCE(iwl_mvm_is_cdb_supported(mvm)))
 486                 return -EINVAL;
 487
 488         /* add back the PHY */
 489         if (WARN_ON(!mvmvif->phy_ctxt))
 490                 return -EINVAL;
 491
 492         rcu_read_lock();
 493         ctx = rcu_dereference(vif->chanctx_conf);
 494         if (WARN_ON(!ctx)) {
 495                 rcu_read_unlock();
 496                 return -EINVAL;
 497         }
 498         chandef = ctx->def;
 499         chains_static = ctx->rx_chains_static;
 500         chains_dynamic = ctx->rx_chains_dynamic;
 501         rcu_read_unlock();
 502
 503         ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt, &chandef,
 504                                    chains_static, chains_dynamic);
 505         if (ret)
 506                 return ret;
 507
 508         /* add back the MAC */
 509         mvmvif->uploaded = false;
 510
 511         if (WARN_ON(!vif->bss_conf.assoc))
 512                 return -EINVAL;
 513
 514         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
 515         if (ret)
 516                 return ret;
 517
 518         /* add back binding - XXX refactor? */
 519         binding_cmd.id_and_color =
 520                 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
 521                                                 mvmvif->phy_ctxt->color));
 522         binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD);
 523         binding_cmd.phy =
 524                 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
 525                                                 mvmvif->phy_ctxt->color));
 526         binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
 527                                                               mvmvif->color));
 528         for (i = 1; i < MAX_MACS_IN_BINDING; i++)
 529                 binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID);
 530
 531         status = 0;
 532         ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD,
 533                                           IWL_BINDING_CMD_SIZE_V1, &binding_cmd,
 534                                           &status);
 535         if (ret) {
 536                 IWL_ERR(mvm, "Failed to add binding: %d\n", ret);
 537                 return ret;
 538         }
 539
 540         if (status) {
 541                 IWL_ERR(mvm, "Binding command failed: %u\n", status);
 542                 return -EIO;
 543         }
 544
 545         ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false, 0);
 546         if (ret)
 547                 return ret;
 548         rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], ap_sta);
 549
 550         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
 551         if (ret)
 552                 return ret;
 553
 554         /* and some quota */
 555         quota = iwl_mvm_quota_cmd_get_quota(mvm, &quota_cmd, 0);
 556         quota->id_and_color =
 557                 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
 558                                                 mvmvif->phy_ctxt->color));
 559         quota->quota = cpu_to_le32(IWL_MVM_MAX_QUOTA);
 560         quota->max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA);
 561
 562         for (i = 1; i < MAX_BINDINGS; i++) {
 563                 quota = iwl_mvm_quota_cmd_get_quota(mvm, &quota_cmd, i);
 564                 quota->id_and_color = cpu_to_le32(FW_CTXT_INVALID);
 565         }
 566
 567         ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0,
 568                                    iwl_mvm_quota_cmd_size(mvm), &quota_cmd);
 569         if (ret)
 570                 IWL_ERR(mvm, "Failed to send quota: %d\n", ret);
 571
 572         if (iwl_mvm_is_lar_supported(mvm) && iwl_mvm_init_fw_regd(mvm))
 573                 IWL_ERR(mvm, "Failed to initialize D3 LAR information\n");
 574
 575         return 0;
 576 }
 577
 578 static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm,
 579                                        struct ieee80211_vif *vif)
 580 {
 581         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 582         struct iwl_nonqos_seq_query_cmd query_cmd = {
 583                 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET),
 584                 .mac_id_n_color =
 585                         cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
 586                                                         mvmvif->color)),
 587         };
 588         struct iwl_host_cmd cmd = {
 589                 .id = NON_QOS_TX_COUNTER_CMD,
 590                 .flags = CMD_WANT_SKB,
 591         };
 592         int err;
 593         u32 size;
 594
 595         cmd.data[0] = &query_cmd;
 596         cmd.len[0] = sizeof(query_cmd);
 597
 598         err = iwl_mvm_send_cmd(mvm, &cmd);
 599         if (err)
 600                 return err;
 601
 602         size = iwl_rx_packet_payload_len(cmd.resp_pkt);
 603         if (size < sizeof(__le16)) {
 604                 err = -EINVAL;
 605         } else {
 606                 err = le16_to_cpup((__le16 *)cmd.resp_pkt->data);
 607                 /* firmware returns next, not last-used seqno */
 608                 err = (u16) (err - 0x10);
 609         }
 610
 611         iwl_free_resp(&cmd);
 612         return err;
 613 }
 614
 615 void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
 616 {
 617         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 618         struct iwl_nonqos_seq_query_cmd query_cmd = {
 619                 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET),
 620                 .mac_id_n_color =
 621                         cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
 622                                                         mvmvif->color)),
 623                 .value = cpu_to_le16(mvmvif->seqno),
 624         };
 625
 626         /* return if called during restart, not resume from D3 */
 627         if (!mvmvif->seqno_valid)
 628                 return;
 629
 630         mvmvif->seqno_valid = false;
 631
 632         if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0,
 633                                  sizeof(query_cmd), &query_cmd))
 634                 IWL_ERR(mvm, "failed to set non-QoS seqno\n");
 635 }
 636
 637 static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm)
 638 {
 639         iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
 640
 641         iwl_mvm_stop_device(mvm);
 642         /*
 643          * Set the HW restart bit -- this is mostly true as we're
 644          * going to load new firmware and reprogram that, though
 645          * the reprogramming is going to be manual to avoid adding
 646          * all the MACs that aren't support.
 647          * We don't have to clear up everything though because the
 648          * reprogramming is manual. When we resume, we'll actually
 649          * go through a proper restart sequence again to switch
 650          * back to the runtime firmware image.
 651          */
 652         set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
 653
 654         /* the fw is reset, so all the keys are cleared */
 655         memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
 656
 657         mvm->ptk_ivlen = 0;
 658         mvm->ptk_icvlen = 0;
 659         mvm->ptk_ivlen = 0;
 660         mvm->ptk_icvlen = 0;
 661
 662         return iwl_mvm_load_d3_fw(mvm);
 663 }
 664
 665 static int
 666 iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm,
 667                           struct cfg80211_wowlan *wowlan,
 668                           struct iwl_wowlan_config_cmd *wowlan_config_cmd,
 669                           struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
 670                           struct ieee80211_sta *ap_sta)
 671 {
 672         int ret;
 673         struct iwl_mvm_sta *mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
 674
 675         /* TODO: wowlan_config_cmd->wowlan_ba_teardown_tids */
 676
 677         wowlan_config_cmd->is_11n_connection =
 678                                         ap_sta->ht_cap.ht_supported;
 679         wowlan_config_cmd->flags = ENABLE_L3_FILTERING |
 680                 ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING;
 681
 682         /* Query the last used seqno and set it */
 683         ret = iwl_mvm_get_last_nonqos_seq(mvm, vif);
 684         if (ret < 0)
 685                 return ret;
 686
 687         wowlan_config_cmd->non_qos_seq = cpu_to_le16(ret);
 688
 689         iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, wowlan_config_cmd);
 690
 691         if (wowlan->disconnect)
 692                 wowlan_config_cmd->wakeup_filter |=
 693                         cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
 694                                     IWL_WOWLAN_WAKEUP_LINK_CHANGE);
 695         if (wowlan->magic_pkt)
 696                 wowlan_config_cmd->wakeup_filter |=
 697                         cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET);
 698         if (wowlan->gtk_rekey_failure)
 699                 wowlan_config_cmd->wakeup_filter |=
 700                         cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
 701         if (wowlan->eap_identity_req)
 702                 wowlan_config_cmd->wakeup_filter |=
 703                         cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ);
 704         if (wowlan->four_way_handshake)
 705                 wowlan_config_cmd->wakeup_filter |=
 706                         cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
 707         if (wowlan->n_patterns)
 708                 wowlan_config_cmd->wakeup_filter |=
 709                         cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH);
 710
 711         if (wowlan->rfkill_release)
 712                 wowlan_config_cmd->wakeup_filter |=
 713                         cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
 714
 715         if (wowlan->tcp) {
 716                 /*
 717                  * Set the "link change" (really "link lost") flag as well
 718                  * since that implies losing the TCP connection.
 719                  */
 720                 wowlan_config_cmd->wakeup_filter |=
 721                         cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS |
 722                                     IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE |
 723                                     IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET |
 724                                     IWL_WOWLAN_WAKEUP_LINK_CHANGE);
 725         }
 726
 727         if (wowlan->any) {
 728                 wowlan_config_cmd->wakeup_filter |=
 729                         cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
 730                                     IWL_WOWLAN_WAKEUP_LINK_CHANGE |
 731                                     IWL_WOWLAN_WAKEUP_RX_FRAME |
 732                                     IWL_WOWLAN_WAKEUP_BCN_FILTERING);
 733         }
 734
 735         return 0;
 736 }
 737
 738 static int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm,
 739                                             struct ieee80211_vif *vif,
 740                                             u32 cmd_flags)
 741 {
 742         struct iwl_wowlan_kek_kck_material_cmd kek_kck_cmd = {};
 743         struct iwl_wowlan_tkip_params_cmd tkip_cmd = {};
 744         bool unified = fw_has_capa(&mvm->fw->ucode_capa,
 745                                    IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
 746         struct wowlan_key_data key_data = {
 747                 .configure_keys = !unified,
 748                 .use_rsc_tsc = false,
 749                 .tkip = &tkip_cmd,
 750                 .use_tkip = false,
 751         };
 752         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 753         int ret;
 754
 755         key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
 756         if (!key_data.rsc_tsc)
 757                 return -ENOMEM;
 758
 759         /*
 760          * if we have to configure keys, call ieee80211_iter_keys(),
 761          * as we need non-atomic context in order to take the
 762          * required locks.
 763          */
 764         /*
 765          * Note that currently we don't propagate cmd_flags
 766          * to the iterator. In case of key_data.configure_keys,
 767          * all the configured commands are SYNC, and
 768          * iwl_mvm_wowlan_program_keys() will take care of
 769          * locking/unlocking mvm->mutex.
 770          */
 771         ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_program_keys,
 772                             &key_data);
 773
 774         if (key_data.error) {
 775                 ret = -EIO;
 776                 goto out;
 777         }
 778
 779         if (key_data.use_rsc_tsc) {
 780                 ret = iwl_mvm_send_cmd_pdu(mvm,
 781                                            WOWLAN_TSC_RSC_PARAM, cmd_flags,
 782                                            sizeof(*key_data.rsc_tsc),
 783                                            key_data.rsc_tsc);
 784                 if (ret)
 785                         goto out;
 786         }
 787
 788         if (key_data.use_tkip &&
 789             !fw_has_api(&mvm->fw->ucode_capa,
 790                         IWL_UCODE_TLV_API_TKIP_MIC_KEYS)) {
 791                 ret = iwl_mvm_send_cmd_pdu(mvm,
 792                                            WOWLAN_TKIP_PARAM,
 793                                            cmd_flags, sizeof(tkip_cmd),
 794                                            &tkip_cmd);
 795                 if (ret)
 796                         goto out;
 797         }
 798
 799         /* configure rekey data only if offloaded rekey is supported (d3) */
 800         if (mvmvif->rekey_data.valid) {
 801                 memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
 802                 memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck,
 803                        NL80211_KCK_LEN);
 804                 kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
 805                 memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek,
 806                        NL80211_KEK_LEN);
 807                 kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
 808                 kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr;
 809
 810                 ret = iwl_mvm_send_cmd_pdu(mvm,
 811                                            WOWLAN_KEK_KCK_MATERIAL, cmd_flags,
 812                                            sizeof(kek_kck_cmd),
 813                                            &kek_kck_cmd);
 814                 if (ret)
 815                         goto out;
 816         }
 817         ret = 0;
 818 out:
 819         kfree(key_data.rsc_tsc);
 820         return ret;
 821 }
 822
 823 static int
 824 iwl_mvm_wowlan_config(struct iwl_mvm *mvm,
 825                       struct cfg80211_wowlan *wowlan,
 826                       struct iwl_wowlan_config_cmd *wowlan_config_cmd,
 827                       struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
 828                       struct ieee80211_sta *ap_sta)
 829 {
 830         int ret;
 831         bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
 832                                          IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
 833
 834         mvm->offload_tid = wowlan_config_cmd->offloading_tid;
 835
 836         if (!unified_image) {
 837                 ret = iwl_mvm_switch_to_d3(mvm);
 838                 if (ret)
 839                         return ret;
 840
 841                 ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta);
 842                 if (ret)
 843                         return ret;
 844         }
 845
 846         if (!iwlwifi_mod_params.swcrypto) {
 847                 /*
 848                  * This needs to be unlocked due to lock ordering
 849                  * constraints. Since we're in the suspend path
 850                  * that isn't really a problem though.
 851                  */
 852                 mutex_unlock(&mvm->mutex);
 853                 ret = iwl_mvm_wowlan_config_key_params(mvm, vif, CMD_ASYNC);
 854                 mutex_lock(&mvm->mutex);
 855                 if (ret)
 856                         return ret;
 857         }
 858
 859         ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0,
 860                                    sizeof(*wowlan_config_cmd),
 861                                    wowlan_config_cmd);
 862         if (ret)
 863                 return ret;
 864
 865         if (fw_has_api(&mvm->fw->ucode_capa,
 866                        IWL_UCODE_TLV_API_WOWLAN_TCP_SYN_WAKE))
 867                 ret = iwl_mvm_send_patterns(mvm, wowlan);
 868         else
 869                 ret = iwl_mvm_send_patterns_v1(mvm, wowlan);
 870         if (ret)
 871                 return ret;
 872
 873         return iwl_mvm_send_proto_offload(mvm, vif, false, true, 0);
 874 }
 875
 876 static int
 877 iwl_mvm_netdetect_config(struct iwl_mvm *mvm,
 878                          struct cfg80211_wowlan *wowlan,
 879                          struct cfg80211_sched_scan_request *nd_config,
 880                          struct ieee80211_vif *vif)
 881 {
 882         struct iwl_wowlan_config_cmd wowlan_config_cmd = {};
 883         int ret;
 884         bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
 885                                          IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
 886
 887         if (!unified_image) {
 888                 ret = iwl_mvm_switch_to_d3(mvm);
 889                 if (ret)
 890                         return ret;
 891         } else {
 892                 /* In theory, we wouldn't have to stop a running sched
 893                  * scan in order to start another one (for
 894                  * net-detect).  But in practice this doesn't seem to
 895                  * work properly, so stop any running sched_scan now.
 896                  */
 897                 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
 898                 if (ret)
 899                         return ret;
 900         }
 901
 902         /* rfkill release can be either for wowlan or netdetect */
 903         if (wowlan->rfkill_release)
 904                 wowlan_config_cmd.wakeup_filter |=
 905                         cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
 906
 907         wowlan_config_cmd.sta_id = mvm->aux_sta.sta_id;
 908
 909         ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0,
 910                                    sizeof(wowlan_config_cmd),
 911                                    &wowlan_config_cmd);
 912         if (ret)
 913                 return ret;
 914
 915         ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies,
 916                                        IWL_MVM_SCAN_NETDETECT);
 917         if (ret)
 918                 return ret;
 919
 920         if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels))
 921                 return -EBUSY;
 922
 923         /* save the sched scan matchsets... */
 924         if (nd_config->n_match_sets) {
 925                 mvm->nd_match_sets = kmemdup(nd_config->match_sets,
 926                                              sizeof(*nd_config->match_sets) *
 927                                              nd_config->n_match_sets,
 928                                              GFP_KERNEL);
 929                 if (mvm->nd_match_sets)
 930                         mvm->n_nd_match_sets = nd_config->n_match_sets;
 931         }
 932
 933         /* ...and the sched scan channels for later reporting */
 934         mvm->nd_channels = kmemdup(nd_config->channels,
 935                                    sizeof(*nd_config->channels) *
 936                                    nd_config->n_channels,
 937                                    GFP_KERNEL);
 938         if (mvm->nd_channels)
 939                 mvm->n_nd_channels = nd_config->n_channels;
 940
 941         return 0;
 942 }
 943
 944 static void iwl_mvm_free_nd(struct iwl_mvm *mvm)
 945 {
 946         kfree(mvm->nd_match_sets);
 947         mvm->nd_match_sets = NULL;
 948         mvm->n_nd_match_sets = 0;
 949         kfree(mvm->nd_channels);
 950         mvm->nd_channels = NULL;
 951         mvm->n_nd_channels = 0;
 952 }
 953
 954 static int __iwl_mvm_suspend(struct ieee80211_hw *hw,
 955                              struct cfg80211_wowlan *wowlan,
 956                              bool test)
 957 {
 958         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 959         struct ieee80211_vif *vif = NULL;
 960         struct iwl_mvm_vif *mvmvif = NULL;
 961         struct ieee80211_sta *ap_sta = NULL;
 962         struct iwl_d3_manager_config d3_cfg_cmd_data = {
 963                 /*
 964                  * Program the minimum sleep time to 10 seconds, as many
 965                  * platforms have issues processing a wakeup signal while
 966                  * still being in the process of suspending.
 967                  */
 968                 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000),
 969         };
 970         struct iwl_host_cmd d3_cfg_cmd = {
 971                 .id = D3_CONFIG_CMD,
 972                 .flags = CMD_WANT_SKB,
 973                 .data[0] = &d3_cfg_cmd_data,
 974                 .len[0] = sizeof(d3_cfg_cmd_data),
 975         };
 976         int ret;
 977         int len __maybe_unused;
 978         bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
 979                                          IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
 980
 981         if (!wowlan) {
 982                 /*
 983                  * mac80211 shouldn't get here, but for D3 test
 984                  * it doesn't warrant a warning
 985                  */
 986                 WARN_ON(!test);
 987                 return -EINVAL;
 988         }
 989
 990         mutex_lock(&mvm->mutex);
 991
 992         vif = iwl_mvm_get_bss_vif(mvm);
 993         if (IS_ERR_OR_NULL(vif)) {
 994                 ret = 1;
 995                 goto out_noreset;
 996         }
 997
 998         mvmvif = iwl_mvm_vif_from_mac80211(vif);
 999
1000         if (mvmvif->ap_sta_id == IWL_MVM_INVALID_STA) {
1001                 /* if we're not associated, this must be netdetect */
1002                 if (!wowlan->nd_config) {
1003                         ret = 1;
1004                         goto out_noreset;
1005                 }
1006
1007                 ret = iwl_mvm_netdetect_config(
1008                         mvm, wowlan, wowlan->nd_config, vif);
1009                 if (ret)
1010                         goto out;
1011
1012                 mvm->net_detect = true;
1013         } else {
1014                 struct iwl_wowlan_config_cmd wowlan_config_cmd = {};
1015
1016                 wowlan_config_cmd.sta_id = mvmvif->ap_sta_id;
1017
1018                 ap_sta = rcu_dereference_protected(
1019                         mvm->fw_id_to_mac_id[mvmvif->ap_sta_id],
1020                         lockdep_is_held(&mvm->mutex));
1021                 if (IS_ERR_OR_NULL(ap_sta)) {
1022                         ret = -EINVAL;
1023                         goto out_noreset;
1024                 }
1025
1026                 ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1027                                                 vif, mvmvif, ap_sta);
1028                 if (ret)
1029                         goto out_noreset;
1030                 ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1031                                             vif, mvmvif, ap_sta);
1032                 if (ret)
1033                         goto out;
1034
1035                 mvm->net_detect = false;
1036         }
1037
1038         ret = iwl_mvm_power_update_device(mvm);
1039         if (ret)
1040                 goto out;
1041
1042         ret = iwl_mvm_power_update_mac(mvm);
1043         if (ret)
1044                 goto out;
1045
1046 #ifdef CONFIG_IWLWIFI_DEBUGFS
1047         if (mvm->d3_wake_sysassert)
1048                 d3_cfg_cmd_data.wakeup_flags |=
1049                         cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR);
1050 #endif
1051
1052         /*
1053          * Prior to 9000 device family the driver needs to stop the dbg
1054          * recording before entering D3. In later devices the FW stops the
1055          * recording automatically.
1056          */
1057         if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_9000)
1058                 iwl_fw_dbg_stop_restart_recording(&mvm->fwrt, NULL, true);
1059
1060         /* must be last -- this switches firmware state */
1061         ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd);
1062         if (ret)
1063                 goto out;
1064 #ifdef CONFIG_IWLWIFI_DEBUGFS
1065         len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt);
1066         if (len >= sizeof(u32)) {
1067                 mvm->d3_test_pme_ptr =
1068                         le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data);
1069         }
1070 #endif
1071         iwl_free_resp(&d3_cfg_cmd);
1072
1073         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1074
1075         ret = iwl_trans_d3_suspend(mvm->trans, test, !unified_image);
1076  out:
1077         if (ret < 0) {
1078                 iwl_mvm_free_nd(mvm);
1079
1080                 if (!unified_image) {
1081                         if (mvm->fw_restart > 0) {
1082                                 mvm->fw_restart--;
1083                                 ieee80211_restart_hw(mvm->hw);
1084                         }
1085                 }
1086         }
1087  out_noreset:
1088         mutex_unlock(&mvm->mutex);
1089
1090         return ret;
1091 }
1092
1093 int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
1094 {
1095         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1096         struct iwl_trans *trans = mvm->trans;
1097         int ret;
1098
1099         iwl_mvm_pause_tcm(mvm, true);
1100
1101         iwl_fw_runtime_suspend(&mvm->fwrt);
1102
1103         ret = iwl_trans_suspend(trans);
1104         if (ret)
1105                 return ret;
1106
1107         trans->system_pm_mode = IWL_PLAT_PM_MODE_D3;
1108
1109         return __iwl_mvm_suspend(hw, wowlan, false);
1110 }
1111
1112 /* converted data from the different status responses */
1113 struct iwl_wowlan_status_data {
1114         u16 pattern_number;
1115         u16 qos_seq_ctr[8];
1116         u32 wakeup_reasons;
1117         u32 wake_packet_length;
1118         u32 wake_packet_bufsize;
1119         const u8 *wake_packet;
1120 };
1121
1122 static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm,
1123                                           struct ieee80211_vif *vif,
1124                                           struct iwl_wowlan_status_data *status)
1125 {
1126         struct sk_buff *pkt = NULL;
1127         struct cfg80211_wowlan_wakeup wakeup = {
1128                 .pattern_idx = -1,
1129         };
1130         struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
1131         u32 reasons = status->wakeup_reasons;
1132
1133         if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
1134                 wakeup_report = NULL;
1135                 goto report;
1136         }
1137
1138         pm_wakeup_event(mvm->dev, 0);
1139
1140         if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET)
1141                 wakeup.magic_pkt = true;
1142
1143         if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN)
1144                 wakeup.pattern_idx =
1145                         status->pattern_number;
1146
1147         if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1148                        IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH))
1149                 wakeup.disconnect = true;
1150
1151         if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)
1152                 wakeup.gtk_rekey_failure = true;
1153
1154         if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
1155                 wakeup.rfkill_release = true;
1156
1157         if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST)
1158                 wakeup.eap_identity_req = true;
1159
1160         if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE)
1161                 wakeup.four_way_handshake = true;
1162
1163         if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS)
1164                 wakeup.tcp_connlost = true;
1165
1166         if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE)
1167                 wakeup.tcp_nomoretokens = true;
1168
1169         if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET)
1170                 wakeup.tcp_match = true;
1171
1172         if (status->wake_packet_bufsize) {
1173                 int pktsize = status->wake_packet_bufsize;
1174                 int pktlen = status->wake_packet_length;
1175                 const u8 *pktdata = status->wake_packet;
1176                 struct ieee80211_hdr *hdr = (void *)pktdata;
1177                 int truncated = pktlen - pktsize;
1178
1179                 /* this would be a firmware bug */
1180                 if (WARN_ON_ONCE(truncated < 0))
1181                         truncated = 0;
1182
1183                 if (ieee80211_is_data(hdr->frame_control)) {
1184                         int hdrlen = ieee80211_hdrlen(hdr->frame_control);
1185                         int ivlen = 0, icvlen = 4; /* also FCS */
1186
1187                         pkt = alloc_skb(pktsize, GFP_KERNEL);
1188                         if (!pkt)
1189                                 goto report;
1190
1191                         skb_put_data(pkt, pktdata, hdrlen);
1192                         pktdata += hdrlen;
1193                         pktsize -= hdrlen;
1194
1195                         if (ieee80211_has_protected(hdr->frame_control)) {
1196                                 /*
1197                                  * This is unlocked and using gtk_i(c)vlen,
1198                                  * but since everything is under RTNL still
1199                                  * that's not really a problem - changing
1200                                  * it would be difficult.
1201                                  */
1202                                 if (is_multicast_ether_addr(hdr->addr1)) {
1203                                         ivlen = mvm->gtk_ivlen;
1204                                         icvlen += mvm->gtk_icvlen;
1205                                 } else {
1206                                         ivlen = mvm->ptk_ivlen;
1207                                         icvlen += mvm->ptk_icvlen;
1208                                 }
1209                         }
1210
1211                         /* if truncated, FCS/ICV is (partially) gone */
1212                         if (truncated >= icvlen) {
1213                                 icvlen = 0;
1214                                 truncated -= icvlen;
1215                         } else {
1216                                 icvlen -= truncated;
1217                                 truncated = 0;
1218                         }
1219
1220                         pktsize -= ivlen + icvlen;
1221                         pktdata += ivlen;
1222
1223                         skb_put_data(pkt, pktdata, pktsize);
1224
1225                         if (ieee80211_data_to_8023(pkt, vif->addr, vif->type))
1226                                 goto report;
1227                         wakeup.packet = pkt->data;
1228                         wakeup.packet_present_len = pkt->len;
1229                         wakeup.packet_len = pkt->len - truncated;
1230                         wakeup.packet_80211 = false;
1231                 } else {
1232                         int fcslen = 4;
1233
1234                         if (truncated >= 4) {
1235                                 truncated -= 4;
1236                                 fcslen = 0;
1237                         } else {
1238                                 fcslen -= truncated;
1239                                 truncated = 0;
1240                         }
1241                         pktsize -= fcslen;
1242                         wakeup.packet = status->wake_packet;
1243                         wakeup.packet_present_len = pktsize;
1244                         wakeup.packet_len = pktlen - truncated;
1245                         wakeup.packet_80211 = true;
1246                 }
1247         }
1248
1249  report:
1250         ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
1251         kfree_skb(pkt);
1252 }
1253
1254 static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc,
1255                                   struct ieee80211_key_seq *seq)
1256 {
1257         u64 pn;
1258
1259         pn = le64_to_cpu(sc->pn);
1260         seq->ccmp.pn[0] = pn >> 40;
1261         seq->ccmp.pn[1] = pn >> 32;
1262         seq->ccmp.pn[2] = pn >> 24;
1263         seq->ccmp.pn[3] = pn >> 16;
1264         seq->ccmp.pn[4] = pn >> 8;
1265         seq->ccmp.pn[5] = pn;
1266 }
1267
1268 static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc,
1269                                    struct ieee80211_key_seq *seq)
1270 {
1271         seq->tkip.iv32 = le32_to_cpu(sc->iv32);
1272         seq->tkip.iv16 = le16_to_cpu(sc->iv16);
1273 }
1274
1275 static void iwl_mvm_set_aes_rx_seq(struct iwl_mvm *mvm, struct aes_sc *scs,
1276                                    struct ieee80211_sta *sta,
1277                                    struct ieee80211_key_conf *key)
1278 {
1279         int tid;
1280
1281         BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS);
1282
1283         if (sta && iwl_mvm_has_new_rx_api(mvm)) {
1284                 struct iwl_mvm_sta *mvmsta;
1285                 struct iwl_mvm_key_pn *ptk_pn;
1286
1287                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1288
1289                 ptk_pn = rcu_dereference_protected(mvmsta->ptk_pn[key->keyidx],
1290                                                    lockdep_is_held(&mvm->mutex));
1291                 if (WARN_ON(!ptk_pn))
1292                         return;
1293
1294                 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1295                         struct ieee80211_key_seq seq = {};
1296                         int i;
1297
1298                         iwl_mvm_aes_sc_to_seq(&scs[tid], &seq);
1299                         ieee80211_set_key_rx_seq(key, tid, &seq);
1300                         for (i = 1; i < mvm->trans->num_rx_queues; i++)
1301                                 memcpy(ptk_pn->q[i].pn[tid],
1302                                        seq.ccmp.pn, IEEE80211_CCMP_PN_LEN);
1303                 }
1304         } else {
1305                 for (tid = 0; tid < IWL_NUM_RSC; tid++) {
1306                         struct ieee80211_key_seq seq = {};
1307
1308                         iwl_mvm_aes_sc_to_seq(&scs[tid], &seq);
1309                         ieee80211_set_key_rx_seq(key, tid, &seq);
1310                 }
1311         }
1312 }
1313
1314 static void iwl_mvm_set_tkip_rx_seq(struct tkip_sc *scs,
1315                                     struct ieee80211_key_conf *key)
1316 {
1317         int tid;
1318
1319         BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS);
1320
1321         for (tid = 0; tid < IWL_NUM_RSC; tid++) {
1322                 struct ieee80211_key_seq seq = {};
1323
1324                 iwl_mvm_tkip_sc_to_seq(&scs[tid], &seq);
1325                 ieee80211_set_key_rx_seq(key, tid, &seq);
1326         }
1327 }
1328
1329 static void iwl_mvm_set_key_rx_seq(struct iwl_mvm *mvm,
1330                                    struct ieee80211_key_conf *key,
1331                                    struct iwl_wowlan_status *status)
1332 {
1333         union iwl_all_tsc_rsc *rsc = &status->gtk[0].rsc.all_tsc_rsc;
1334
1335         switch (key->cipher) {
1336         case WLAN_CIPHER_SUITE_CCMP:
1337                 iwl_mvm_set_aes_rx_seq(mvm, rsc->aes.multicast_rsc, NULL, key);
1338                 break;
1339         case WLAN_CIPHER_SUITE_TKIP:
1340                 iwl_mvm_set_tkip_rx_seq(rsc->tkip.multicast_rsc, key);
1341                 break;
1342         default:
1343                 WARN_ON(1);
1344         }
1345 }
1346
1347 struct iwl_mvm_d3_gtk_iter_data {
1348         struct iwl_mvm *mvm;
1349         struct iwl_wowlan_status *status;
1350         void *last_gtk;
1351         u32 cipher;
1352         bool find_phase, unhandled_cipher;
1353         int num_keys;
1354 };
1355
1356 static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw,
1357                                    struct ieee80211_vif *vif,
1358                                    struct ieee80211_sta *sta,
1359                                    struct ieee80211_key_conf *key,
1360                                    void *_data)
1361 {
1362         struct iwl_mvm_d3_gtk_iter_data *data = _data;
1363
1364         if (data->unhandled_cipher)
1365                 return;
1366
1367         switch (key->cipher) {
1368         case WLAN_CIPHER_SUITE_WEP40:
1369         case WLAN_CIPHER_SUITE_WEP104:
1370                 /* ignore WEP completely, nothing to do */
1371                 return;
1372         case WLAN_CIPHER_SUITE_CCMP:
1373         case WLAN_CIPHER_SUITE_TKIP:
1374                 /* we support these */
1375                 break;
1376         default:
1377                 /* everything else (even CMAC for MFP) - disconnect from AP */
1378                 data->unhandled_cipher = true;
1379                 return;
1380         }
1381
1382         data->num_keys++;
1383
1384         /*
1385          * pairwise key - update sequence counters only;
1386          * note that this assumes no TDLS sessions are active
1387          */
1388         if (sta) {
1389                 struct ieee80211_key_seq seq = {};
1390                 union iwl_all_tsc_rsc *sc =
1391                         &data->status->gtk[0].rsc.all_tsc_rsc;
1392
1393                 if (data->find_phase)
1394                         return;
1395
1396                 switch (key->cipher) {
1397                 case WLAN_CIPHER_SUITE_CCMP:
1398                         iwl_mvm_set_aes_rx_seq(data->mvm, sc->aes.unicast_rsc,
1399                                                sta, key);
1400                         atomic64_set(&key->tx_pn, le64_to_cpu(sc->aes.tsc.pn));
1401                         break;
1402                 case WLAN_CIPHER_SUITE_TKIP:
1403                         iwl_mvm_tkip_sc_to_seq(&sc->tkip.tsc, &seq);
1404                         iwl_mvm_set_tkip_rx_seq(sc->tkip.unicast_rsc, key);
1405                         atomic64_set(&key->tx_pn,
1406                                      (u64)seq.tkip.iv16 |
1407                                      ((u64)seq.tkip.iv32 << 16));
1408                         break;
1409                 }
1410
1411                 /* that's it for this key */
1412                 return;
1413         }
1414
1415         if (data->find_phase) {
1416                 data->last_gtk = key;
1417                 data->cipher = key->cipher;
1418                 return;
1419         }
1420
1421         if (data->status->num_of_gtk_rekeys)
1422                 ieee80211_remove_key(key);
1423         else if (data->last_gtk == key)
1424                 iwl_mvm_set_key_rx_seq(data->mvm, key, data->status);
1425 }
1426
1427 static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm,
1428                                           struct ieee80211_vif *vif,
1429                                           struct iwl_wowlan_status *status)
1430 {
1431         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1432         struct iwl_mvm_d3_gtk_iter_data gtkdata = {
1433                 .mvm = mvm,
1434                 .status = status,
1435         };
1436         u32 disconnection_reasons =
1437                 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1438                 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH;
1439
1440         if (!status || !vif->bss_conf.bssid)
1441                 return false;
1442
1443         if (le32_to_cpu(status->wakeup_reasons) & disconnection_reasons)
1444                 return false;
1445
1446         /* find last GTK that we used initially, if any */
1447         gtkdata.find_phase = true;
1448         ieee80211_iter_keys(mvm->hw, vif,
1449                             iwl_mvm_d3_update_keys, &gtkdata);
1450         /* not trying to keep connections with MFP/unhandled ciphers */
1451         if (gtkdata.unhandled_cipher)
1452                 return false;
1453         if (!gtkdata.num_keys)
1454                 goto out;
1455         if (!gtkdata.last_gtk)
1456                 return false;
1457
1458         /*
1459          * invalidate all other GTKs that might still exist and update
1460          * the one that we used
1461          */
1462         gtkdata.find_phase = false;
1463         ieee80211_iter_keys(mvm->hw, vif,
1464                             iwl_mvm_d3_update_keys, &gtkdata);
1465
1466         if (status->num_of_gtk_rekeys) {
1467                 struct ieee80211_key_conf *key;
1468                 struct {
1469                         struct ieee80211_key_conf conf;
1470                         u8 key[32];
1471                 } conf = {
1472                         .conf.cipher = gtkdata.cipher,
1473                         .conf.keyidx =
1474                                 iwlmvm_wowlan_gtk_idx(&status->gtk[0]),
1475                 };
1476                 __be64 replay_ctr;
1477
1478                 switch (gtkdata.cipher) {
1479                 case WLAN_CIPHER_SUITE_CCMP:
1480                         conf.conf.keylen = WLAN_KEY_LEN_CCMP;
1481                         memcpy(conf.conf.key, status->gtk[0].key,
1482                                WLAN_KEY_LEN_CCMP);
1483                         break;
1484                 case WLAN_CIPHER_SUITE_TKIP:
1485                         conf.conf.keylen = WLAN_KEY_LEN_TKIP;
1486                         memcpy(conf.conf.key, status->gtk[0].key, 16);
1487                         /* leave TX MIC key zeroed, we don't use it anyway */
1488                         memcpy(conf.conf.key +
1489                                NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
1490                                status->gtk[0].tkip_mic_key, 8);
1491                         break;
1492                 }
1493
1494                 key = ieee80211_gtk_rekey_add(vif, &conf.conf);
1495                 if (IS_ERR(key))
1496                         return false;
1497                 iwl_mvm_set_key_rx_seq(mvm, key, status);
1498
1499                 replay_ctr =
1500                         cpu_to_be64(le64_to_cpu(status->replay_ctr));
1501
1502                 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid,
1503                                            (void *)&replay_ctr, GFP_KERNEL);
1504         }
1505
1506 out:
1507         mvmvif->seqno_valid = true;
1508         /* +0x10 because the set API expects next-to-use, not last-used */
1509         mvmvif->seqno = le16_to_cpu(status->non_qos_seq_ctr) + 0x10;
1510
1511         return true;
1512 }
1513
1514 struct iwl_wowlan_status *iwl_mvm_send_wowlan_get_status(struct iwl_mvm *mvm)
1515 {
1516         struct iwl_wowlan_status *v7, *status;
1517         struct iwl_host_cmd cmd = {
1518                 .id = WOWLAN_GET_STATUSES,
1519                 .flags = CMD_WANT_SKB,
1520         };
1521         int ret, len, status_size;
1522
1523         lockdep_assert_held(&mvm->mutex);
1524
1525         ret = iwl_mvm_send_cmd(mvm, &cmd);
1526         if (ret) {
1527                 IWL_ERR(mvm, "failed to query wakeup status (%d)\n", ret);
1528                 return ERR_PTR(ret);
1529         }
1530
1531         if (!fw_has_api(&mvm->fw->ucode_capa,
1532                         IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL)) {
1533                 struct iwl_wowlan_status_v6 *v6 = (void *)cmd.resp_pkt->data;
1534                 int data_size;
1535
1536                 status_size = sizeof(*v6);
1537                 len = iwl_rx_packet_payload_len(cmd.resp_pkt);
1538
1539                 if (len < status_size) {
1540                         IWL_ERR(mvm, "Invalid WoWLAN status response!\n");
1541                         status = ERR_PTR(-EIO);
1542                         goto out_free_resp;
1543                 }
1544
1545                 data_size = ALIGN(le32_to_cpu(v6->wake_packet_bufsize), 4);
1546
1547                 if (len != (status_size + data_size)) {
1548                         IWL_ERR(mvm, "Invalid WoWLAN status response!\n");
1549                         status = ERR_PTR(-EIO);
1550                         goto out_free_resp;
1551                 }
1552
1553                 status = kzalloc(sizeof(*status) + data_size, GFP_KERNEL);
1554                 if (!status)
1555                         goto out_free_resp;
1556
1557                 BUILD_BUG_ON(sizeof(v6->gtk.decrypt_key) >
1558                              sizeof(status->gtk[0].key));
1559                 BUILD_BUG_ON(sizeof(v6->gtk.tkip_mic_key) >
1560                              sizeof(status->gtk[0].tkip_mic_key));
1561
1562                 /* copy GTK info to the right place */
1563                 memcpy(status->gtk[0].key, v6->gtk.decrypt_key,
1564                        sizeof(v6->gtk.decrypt_key));
1565                 memcpy(status->gtk[0].tkip_mic_key, v6->gtk.tkip_mic_key,
1566                        sizeof(v6->gtk.tkip_mic_key));
1567                 memcpy(&status->gtk[0].rsc, &v6->gtk.rsc,
1568                        sizeof(status->gtk[0].rsc));
1569
1570                 /* hardcode the key length to 16 since v6 only supports 16 */
1571                 status->gtk[0].key_len = 16;
1572
1573                 /*
1574                  * The key index only uses 2 bits (values 0 to 3) and
1575                  * we always set bit 7 which means this is the
1576                  * currently used key.
1577                  */
1578                 status->gtk[0].key_flags = v6->gtk.key_index | BIT(7);
1579
1580                 status->replay_ctr = v6->replay_ctr;
1581
1582                 /* everything starting from pattern_number is identical */
1583                 memcpy(&status->pattern_number, &v6->pattern_number,
1584                        offsetof(struct iwl_wowlan_status, wake_packet) -
1585                        offsetof(struct iwl_wowlan_status, pattern_number) +
1586                        data_size);
1587
1588                 goto out_free_resp;
1589         }
1590
1591         v7 = (void *)cmd.resp_pkt->data;
1592         status_size = sizeof(*v7);
1593         len = iwl_rx_packet_payload_len(cmd.resp_pkt);
1594
1595         if (len < status_size) {
1596                 IWL_ERR(mvm, "Invalid WoWLAN status response!\n");
1597                 status = ERR_PTR(-EIO);
1598                 goto out_free_resp;
1599         }
1600
1601         if (len != (status_size +
1602                     ALIGN(le32_to_cpu(v7->wake_packet_bufsize), 4))) {
1603                 IWL_ERR(mvm, "Invalid WoWLAN status response!\n");
1604                 status = ERR_PTR(-EIO);
1605                 goto out_free_resp;
1606         }
1607
1608         status = kmemdup(v7, len, GFP_KERNEL);
1609
1610 out_free_resp:
1611         iwl_free_resp(&cmd);
1612         return status;
1613 }
1614
1615 static struct iwl_wowlan_status *
1616 iwl_mvm_get_wakeup_status(struct iwl_mvm *mvm)
1617 {
1618         int ret;
1619
1620         /* only for tracing for now */
1621         ret = iwl_mvm_send_cmd_pdu(mvm, OFFLOADS_QUERY_CMD, 0, 0, NULL);
1622         if (ret)
1623                 IWL_ERR(mvm, "failed to query offload statistics (%d)\n", ret);
1624
1625         return iwl_mvm_send_wowlan_get_status(mvm);
1626 }
1627
1628 /* releases the MVM mutex */
1629 static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm,
1630                                          struct ieee80211_vif *vif)
1631 {
1632         struct iwl_wowlan_status_data status;
1633         struct iwl_wowlan_status *fw_status;
1634         int i;
1635         bool keep;
1636         struct iwl_mvm_sta *mvm_ap_sta;
1637
1638         fw_status = iwl_mvm_get_wakeup_status(mvm);
1639         if (IS_ERR_OR_NULL(fw_status))
1640                 goto out_unlock;
1641
1642         status.pattern_number = le16_to_cpu(fw_status->pattern_number);
1643         for (i = 0; i < 8; i++)
1644                 status.qos_seq_ctr[i] =
1645                         le16_to_cpu(fw_status->qos_seq_ctr[i]);
1646         status.wakeup_reasons = le32_to_cpu(fw_status->wakeup_reasons);
1647         status.wake_packet_length =
1648                 le32_to_cpu(fw_status->wake_packet_length);
1649         status.wake_packet_bufsize =
1650                 le32_to_cpu(fw_status->wake_packet_bufsize);
1651         status.wake_packet = fw_status->wake_packet;
1652
1653         /* still at hard-coded place 0 for D3 image */
1654         mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, 0);
1655         if (!mvm_ap_sta)
1656                 goto out_free;
1657
1658         for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1659                 u16 seq = status.qos_seq_ctr[i];
1660                 /* firmware stores last-used value, we store next value */
1661                 seq += 0x10;
1662                 mvm_ap_sta->tid_data[i].seq_number = seq;
1663         }
1664
1665         if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000) {
1666                 i = mvm->offload_tid;
1667                 iwl_trans_set_q_ptrs(mvm->trans,
1668                                      mvm_ap_sta->tid_data[i].txq_id,
1669                                      mvm_ap_sta->tid_data[i].seq_number >> 4);
1670         }
1671
1672         /* now we have all the data we need, unlock to avoid mac80211 issues */
1673         mutex_unlock(&mvm->mutex);
1674
1675         iwl_mvm_report_wakeup_reasons(mvm, vif, &status);
1676
1677         keep = iwl_mvm_setup_connection_keep(mvm, vif, fw_status);
1678
1679         kfree(fw_status);
1680         return keep;
1681
1682 out_free:
1683         kfree(fw_status);
1684 out_unlock:
1685         mutex_unlock(&mvm->mutex);
1686         return false;
1687 }
1688
1689 #define ND_QUERY_BUF_LEN (sizeof(struct iwl_scan_offload_profile_match) * \
1690                           IWL_SCAN_MAX_PROFILES)
1691
1692 struct iwl_mvm_nd_query_results {
1693         u32 matched_profiles;
1694         u8 matches[ND_QUERY_BUF_LEN];
1695 };
1696
1697 static int
1698 iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm,
1699                                 struct iwl_mvm_nd_query_results *results)
1700 {
1701         struct iwl_scan_offload_profiles_query *query;
1702         struct iwl_host_cmd cmd = {
1703                 .id = SCAN_OFFLOAD_PROFILES_QUERY_CMD,
1704                 .flags = CMD_WANT_SKB,
1705         };
1706         int ret, len;
1707         size_t query_len, matches_len;
1708
1709         ret = iwl_mvm_send_cmd(mvm, &cmd);
1710         if (ret) {
1711                 IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret);
1712                 return ret;
1713         }
1714
1715         if (fw_has_api(&mvm->fw->ucode_capa,
1716                        IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
1717                 query_len = sizeof(struct iwl_scan_offload_profiles_query);
1718                 matches_len = sizeof(struct iwl_scan_offload_profile_match) *
1719                         IWL_SCAN_MAX_PROFILES;
1720         } else {
1721                 query_len = sizeof(struct iwl_scan_offload_profiles_query_v1);
1722                 matches_len = sizeof(struct iwl_scan_offload_profile_match_v1) *
1723                         IWL_SCAN_MAX_PROFILES;
1724         }
1725
1726         len = iwl_rx_packet_payload_len(cmd.resp_pkt);
1727         if (len < query_len) {
1728                 IWL_ERR(mvm, "Invalid scan offload profiles query response!\n");
1729                 ret = -EIO;
1730                 goto out_free_resp;
1731         }
1732
1733         query = (void *)cmd.resp_pkt->data;
1734
1735         results->matched_profiles = le32_to_cpu(query->matched_profiles);
1736         memcpy(results->matches, query->matches, matches_len);
1737
1738 #ifdef CONFIG_IWLWIFI_DEBUGFS
1739         mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done);
1740 #endif
1741
1742 out_free_resp:
1743         iwl_free_resp(&cmd);
1744         return ret;
1745 }
1746
1747 static int iwl_mvm_query_num_match_chans(struct iwl_mvm *mvm,
1748                                          struct iwl_mvm_nd_query_results *query,
1749                                          int idx)
1750 {
1751         int n_chans = 0, i;
1752
1753         if (fw_has_api(&mvm->fw->ucode_capa,
1754                        IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
1755                 struct iwl_scan_offload_profile_match *matches =
1756                         (struct iwl_scan_offload_profile_match *)query->matches;
1757
1758                 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; i++)
1759                         n_chans += hweight8(matches[idx].matching_channels[i]);
1760         } else {
1761                 struct iwl_scan_offload_profile_match_v1 *matches =
1762                         (struct iwl_scan_offload_profile_match_v1 *)query->matches;
1763
1764                 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1; i++)
1765                         n_chans += hweight8(matches[idx].matching_channels[i]);
1766         }
1767
1768         return n_chans;
1769 }
1770
1771 static void iwl_mvm_query_set_freqs(struct iwl_mvm *mvm,
1772                                     struct iwl_mvm_nd_query_results *query,
1773                                     struct cfg80211_wowlan_nd_match *match,
1774                                     int idx)
1775 {
1776         int i;
1777
1778         if (fw_has_api(&mvm->fw->ucode_capa,
1779                        IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
1780                 struct iwl_scan_offload_profile_match *matches =
1781                         (struct iwl_scan_offload_profile_match *)query->matches;
1782
1783                 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; i++)
1784                         if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
1785                                 match->channels[match->n_channels++] =
1786                                         mvm->nd_channels[i]->center_freq;
1787         } else {
1788                 struct iwl_scan_offload_profile_match_v1 *matches =
1789                         (struct iwl_scan_offload_profile_match_v1 *)query->matches;
1790
1791                 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1 * 8; i++)
1792                         if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
1793                                 match->channels[match->n_channels++] =
1794                                         mvm->nd_channels[i]->center_freq;
1795         }
1796 }
1797
1798 static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm,
1799                                             struct ieee80211_vif *vif)
1800 {
1801         struct cfg80211_wowlan_nd_info *net_detect = NULL;
1802         struct cfg80211_wowlan_wakeup wakeup = {
1803                 .pattern_idx = -1,
1804         };
1805         struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
1806         struct iwl_mvm_nd_query_results query;
1807         struct iwl_wowlan_status *fw_status;
1808         unsigned long matched_profiles;
1809         u32 reasons = 0;
1810         int i, n_matches, ret;
1811
1812         fw_status = iwl_mvm_get_wakeup_status(mvm);
1813         if (!IS_ERR_OR_NULL(fw_status)) {
1814                 reasons = le32_to_cpu(fw_status->wakeup_reasons);
1815                 kfree(fw_status);
1816         }
1817
1818         if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
1819                 wakeup.rfkill_release = true;
1820
1821         if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS)
1822                 goto out;
1823
1824         ret = iwl_mvm_netdetect_query_results(mvm, &query);
1825         if (ret || !query.matched_profiles) {
1826                 wakeup_report = NULL;
1827                 goto out;
1828         }
1829
1830         matched_profiles = query.matched_profiles;
1831         if (mvm->n_nd_match_sets) {
1832                 n_matches = hweight_long(matched_profiles);
1833         } else {
1834                 IWL_ERR(mvm, "no net detect match information available\n");
1835                 n_matches = 0;
1836         }
1837
1838         net_detect = kzalloc(struct_size(net_detect, matches, n_matches),
1839                              GFP_KERNEL);
1840         if (!net_detect || !n_matches)
1841                 goto out_report_nd;
1842
1843         for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) {
1844                 struct cfg80211_wowlan_nd_match *match;
1845                 int idx, n_channels = 0;
1846
1847                 n_channels = iwl_mvm_query_num_match_chans(mvm, &query, i);
1848
1849                 match = kzalloc(struct_size(match, channels, n_channels),
1850                                 GFP_KERNEL);
1851                 if (!match)
1852                         goto out_report_nd;
1853
1854                 net_detect->matches[net_detect->n_matches++] = match;
1855
1856                 /* We inverted the order of the SSIDs in the scan
1857                  * request, so invert the index here.
1858                  */
1859                 idx = mvm->n_nd_match_sets - i - 1;
1860                 match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len;
1861                 memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid,
1862                        match->ssid.ssid_len);
1863
1864                 if (mvm->n_nd_channels < n_channels)
1865                         continue;
1866
1867                 iwl_mvm_query_set_freqs(mvm, &query, match, i);
1868         }
1869
1870 out_report_nd:
1871         wakeup.net_detect = net_detect;
1872 out:
1873         iwl_mvm_free_nd(mvm);
1874
1875         mutex_unlock(&mvm->mutex);
1876         ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
1877
1878         if (net_detect) {
1879                 for (i = 0; i < net_detect->n_matches; i++)
1880                         kfree(net_detect->matches[i]);
1881                 kfree(net_detect);
1882         }
1883 }
1884
1885 static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac,
1886                                        struct ieee80211_vif *vif)
1887 {
1888         /* skip the one we keep connection on */
1889         if (data == vif)
1890                 return;
1891
1892         if (vif->type == NL80211_IFTYPE_STATION)
1893                 ieee80211_resume_disconnect(vif);
1894 }
1895
1896 static int iwl_mvm_check_rt_status(struct iwl_mvm *mvm,
1897                                    struct ieee80211_vif *vif)
1898 {
1899         u32 base = mvm->trans->dbg.lmac_error_event_table[0];
1900         struct error_table_start {
1901                 /* cf. struct iwl_error_event_table */
1902                 u32 valid;
1903                 u32 error_id;
1904         } err_info;
1905
1906         iwl_trans_read_mem_bytes(mvm->trans, base,
1907                                  &err_info, sizeof(err_info));
1908
1909         if (err_info.valid &&
1910             err_info.error_id == RF_KILL_INDICATOR_FOR_WOWLAN) {
1911                 struct cfg80211_wowlan_wakeup wakeup = {
1912                         .rfkill_release = true,
1913                 };
1914                 ieee80211_report_wowlan_wakeup(vif, &wakeup, GFP_KERNEL);
1915         }
1916         return err_info.valid;
1917 }
1918
1919 static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test)
1920 {
1921         struct ieee80211_vif *vif = NULL;
1922         int ret = 1;
1923         enum iwl_d3_status d3_status;
1924         bool keep = false;
1925         bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1926                                          IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1927         bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa,
1928                                       IWL_UCODE_TLV_CAPA_D0I3_END_FIRST);
1929
1930         mutex_lock(&mvm->mutex);
1931
1932         /* get the BSS vif pointer again */
1933         vif = iwl_mvm_get_bss_vif(mvm);
1934         if (IS_ERR_OR_NULL(vif))
1935                 goto err;
1936
1937         iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
1938
1939         if (iwl_mvm_check_rt_status(mvm, vif)) {
1940                 set_bit(STATUS_FW_ERROR, &mvm->trans->status);
1941                 iwl_mvm_dump_nic_error_log(mvm);
1942                 iwl_dbg_tlv_time_point(&mvm->fwrt,
1943                                        IWL_FW_INI_TIME_POINT_FW_ASSERT, NULL);
1944                 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert,
1945                                         false, 0);
1946                 ret = 1;
1947                 goto err;
1948         }
1949
1950         ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, !unified_image);
1951         if (ret)
1952                 goto err;
1953
1954         if (d3_status != IWL_D3_STATUS_ALIVE) {
1955                 IWL_INFO(mvm, "Device was reset during suspend\n");
1956                 goto err;
1957         }
1958
1959         if (d0i3_first) {
1960                 struct iwl_host_cmd cmd = {
1961                         .id = D0I3_END_CMD,
1962                         .flags = CMD_WANT_SKB,
1963                 };
1964                 int len;
1965
1966                 ret = iwl_mvm_send_cmd(mvm, &cmd);
1967                 if (ret < 0) {
1968                         IWL_ERR(mvm, "Failed to send D0I3_END_CMD first (%d)\n",
1969                                 ret);
1970                         goto err;
1971                 }
1972                 switch (mvm->cmd_ver.d0i3_resp) {
1973                 case 0:
1974                         break;
1975                 case 1:
1976                         len = iwl_rx_packet_payload_len(cmd.resp_pkt);
1977                         if (len != sizeof(u32)) {
1978                                 IWL_ERR(mvm,
1979                                         "Error with D0I3_END_CMD response size (%d)\n",
1980                                         len);
1981                                 goto err;
1982                         }
1983                         if (IWL_D0I3_RESET_REQUIRE &
1984                             le32_to_cpu(*(__le32 *)cmd.resp_pkt->data)) {
1985                                 iwl_write32(mvm->trans, CSR_RESET,
1986                                             CSR_RESET_REG_FLAG_FORCE_NMI);
1987                                 iwl_free_resp(&cmd);
1988                         }
1989                         break;
1990                 default:
1991                         WARN_ON(1);
1992                 }
1993         }
1994
1995         /*
1996          * Query the current location and source from the D3 firmware so we
1997          * can play it back when we re-intiailize the D0 firmware
1998          */
1999         iwl_mvm_update_changed_regdom(mvm);
2000
2001         /* Re-configure PPAG settings */
2002         iwl_mvm_ppag_send_cmd(mvm);
2003
2004         if (!unified_image)
2005                 /*  Re-configure default SAR profile */
2006                 iwl_mvm_sar_select_profile(mvm, 1, 1);
2007
2008         if (mvm->net_detect) {
2009                 /* If this is a non-unified image, we restart the FW,
2010                  * so no need to stop the netdetect scan.  If that
2011                  * fails, continue and try to get the wake-up reasons,
2012                  * but trigger a HW restart by keeping a failure code
2013                  * in ret.
2014                  */
2015                 if (unified_image)
2016                         ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT,
2017                                                 false);
2018
2019                 iwl_mvm_query_netdetect_reasons(mvm, vif);
2020                 /* has unlocked the mutex, so skip that */
2021                 goto out;
2022         } else {
2023                 keep = iwl_mvm_query_wakeup_reasons(mvm, vif);
2024 #ifdef CONFIG_IWLWIFI_DEBUGFS
2025                 if (keep)
2026                         mvm->keep_vif = vif;
2027 #endif
2028                 /* has unlocked the mutex, so skip that */
2029                 goto out_iterate;
2030         }
2031
2032 err:
2033         iwl_mvm_free_nd(mvm);
2034         mutex_unlock(&mvm->mutex);
2035
2036 out_iterate:
2037         if (!test)
2038                 ieee80211_iterate_active_interfaces_rtnl(mvm->hw,
2039                         IEEE80211_IFACE_ITER_NORMAL,
2040                         iwl_mvm_d3_disconnect_iter, keep ? vif : NULL);
2041
2042 out:
2043         /* no need to reset the device in unified images, if successful */
2044         if (unified_image && !ret) {
2045                 /* nothing else to do if we already sent D0I3_END_CMD */
2046                 if (d0i3_first)
2047                         return 0;
2048
2049                 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL);
2050                 if (!ret)
2051                         return 0;
2052         }
2053
2054         /*
2055          * Reconfigure the device in one of the following cases:
2056          * 1. We are not using a unified image
2057          * 2. We are using a unified image but had an error while exiting D3
2058          */
2059         set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
2060
2061         return 1;
2062 }
2063
2064 static int iwl_mvm_resume_d3(struct iwl_mvm *mvm)
2065 {
2066         iwl_trans_resume(mvm->trans);
2067
2068         return __iwl_mvm_resume(mvm, false);
2069 }
2070
2071 int iwl_mvm_resume(struct ieee80211_hw *hw)
2072 {
2073         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2074         int ret;
2075
2076         ret = iwl_mvm_resume_d3(mvm);
2077
2078         mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
2079
2080         iwl_mvm_resume_tcm(mvm);
2081
2082         iwl_fw_runtime_resume(&mvm->fwrt);
2083
2084         return ret;
2085 }
2086
2087 void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled)
2088 {
2089         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2090
2091         device_set_wakeup_enable(mvm->trans->dev, enabled);
2092 }
2093
2094 #ifdef CONFIG_IWLWIFI_DEBUGFS
2095 static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file)
2096 {
2097         struct iwl_mvm *mvm = inode->i_private;
2098         int err;
2099
2100         if (mvm->d3_test_active)
2101                 return -EBUSY;
2102
2103         file->private_data = inode->i_private;
2104
2105         synchronize_net();
2106
2107         mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_D3;
2108
2109         iwl_mvm_pause_tcm(mvm, true);
2110
2111         iwl_fw_runtime_suspend(&mvm->fwrt);
2112
2113         /* start pseudo D3 */
2114         rtnl_lock();
2115         err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true);
2116         rtnl_unlock();
2117         if (err > 0)
2118                 err = -EINVAL;
2119         if (err)
2120                 return err;
2121
2122         mvm->d3_test_active = true;
2123         mvm->keep_vif = NULL;
2124         return 0;
2125 }
2126
2127 static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf,
2128                                     size_t count, loff_t *ppos)
2129 {
2130         struct iwl_mvm *mvm = file->private_data;
2131         u32 pme_asserted;
2132
2133         while (true) {
2134                 /* read pme_ptr if available */
2135                 if (mvm->d3_test_pme_ptr) {
2136                         pme_asserted = iwl_trans_read_mem32(mvm->trans,
2137                                                 mvm->d3_test_pme_ptr);
2138                         if (pme_asserted)
2139                                 break;
2140                 }
2141
2142                 if (msleep_interruptible(100))
2143                         break;
2144         }
2145
2146         return 0;
2147 }
2148
2149 static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac,
2150                                               struct ieee80211_vif *vif)
2151 {
2152         /* skip the one we keep connection on */
2153         if (_data == vif)
2154                 return;
2155
2156         if (vif->type == NL80211_IFTYPE_STATION)
2157                 ieee80211_connection_loss(vif);
2158 }
2159
2160 static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file)
2161 {
2162         struct iwl_mvm *mvm = inode->i_private;
2163         bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
2164                                          IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2165
2166         mvm->d3_test_active = false;
2167
2168         iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
2169
2170         rtnl_lock();
2171         __iwl_mvm_resume(mvm, true);
2172         rtnl_unlock();
2173
2174         iwl_mvm_resume_tcm(mvm);
2175
2176         iwl_fw_runtime_resume(&mvm->fwrt);
2177
2178         mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
2179
2180         iwl_abort_notification_waits(&mvm->notif_wait);
2181         if (!unified_image) {
2182                 int remaining_time = 10;
2183
2184                 ieee80211_restart_hw(mvm->hw);
2185
2186                 /* wait for restart and disconnect all interfaces */
2187                 while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2188                        remaining_time > 0) {
2189                         remaining_time--;
2190                         msleep(1000);
2191                 }
2192
2193                 if (remaining_time == 0)
2194                         IWL_ERR(mvm, "Timed out waiting for HW restart!\n");
2195         }
2196
2197         ieee80211_iterate_active_interfaces_atomic(
2198                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
2199                 iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif);
2200
2201         return 0;
2202 }
2203
2204 const struct file_operations iwl_dbgfs_d3_test_ops = {
2205         .llseek = no_llseek,
2206         .open = iwl_mvm_d3_test_open,
2207         .read = iwl_mvm_d3_test_read,
2208         .release = iwl_mvm_d3_test_release,
2209 };
2210 #endif