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        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.
  16  *
  17  * This program is distributed in the hope that it will be useful, but
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  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  20  * General Public License for more details.
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  22  * The full GNU General Public License is included in this distribution
  23  * in the file called COPYING.
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  26  *  Intel Linux Wireless <linuxwifi@intel.com>
  27  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  28  *
  29  * BSD LICENSE
  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        Intel Corporation
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  38  * modification, are permitted provided that the following conditions
  39  * are met:
  40  *
  41  *  * Redistributions of source code must retain the above copyright
  42  *    notice, this list of conditions and the following disclaimer.
  43  *  * Redistributions in binary form must reproduce the above copyright
  44  *    notice, this list of conditions and the following disclaimer in
  45  *    the documentation and/or other materials provided with the
  46  *    distribution.
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  48  *    contributors may be used to endorse or promote products derived
  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,
  56  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  57  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  58  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  59  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  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(struct iwl_mvm *mvm,
 389                                  struct cfg80211_wowlan *wowlan)
 390 {
 391         struct iwl_wowlan_patterns_cmd *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] = sizeof(*pattern_cmd) +
 402                 wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern);
 403
 404         pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
 405         if (!pattern_cmd)
 406                 return -ENOMEM;
 407
 408         pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
 409
 410         for (i = 0; i < wowlan->n_patterns; i++) {
 411                 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
 412
 413                 memcpy(&pattern_cmd->patterns[i].mask,
 414                        wowlan->patterns[i].mask, mask_len);
 415                 memcpy(&pattern_cmd->patterns[i].pattern,
 416                        wowlan->patterns[i].pattern,
 417                        wowlan->patterns[i].pattern_len);
 418                 pattern_cmd->patterns[i].mask_size = mask_len;
 419                 pattern_cmd->patterns[i].pattern_size =
 420                         wowlan->patterns[i].pattern_len;
 421         }
 422
 423         cmd.data[0] = pattern_cmd;
 424         err = iwl_mvm_send_cmd(mvm, &cmd);
 425         kfree(pattern_cmd);
 426         return err;
 427 }
 428
 429 static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 430                                 struct ieee80211_sta *ap_sta)
 431 {
 432         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 433         struct ieee80211_chanctx_conf *ctx;
 434         u8 chains_static, chains_dynamic;
 435         struct cfg80211_chan_def chandef;
 436         int ret, i;
 437         struct iwl_binding_cmd_v1 binding_cmd = {};
 438         struct iwl_time_quota_cmd quota_cmd = {};
 439         struct iwl_time_quota_data *quota;
 440         u32 status;
 441
 442         if (WARN_ON_ONCE(iwl_mvm_is_cdb_supported(mvm)))
 443                 return -EINVAL;
 444
 445         /* add back the PHY */
 446         if (WARN_ON(!mvmvif->phy_ctxt))
 447                 return -EINVAL;
 448
 449         rcu_read_lock();
 450         ctx = rcu_dereference(vif->chanctx_conf);
 451         if (WARN_ON(!ctx)) {
 452                 rcu_read_unlock();
 453                 return -EINVAL;
 454         }
 455         chandef = ctx->def;
 456         chains_static = ctx->rx_chains_static;
 457         chains_dynamic = ctx->rx_chains_dynamic;
 458         rcu_read_unlock();
 459
 460         ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt, &chandef,
 461                                    chains_static, chains_dynamic);
 462         if (ret)
 463                 return ret;
 464
 465         /* add back the MAC */
 466         mvmvif->uploaded = false;
 467
 468         if (WARN_ON(!vif->bss_conf.assoc))
 469                 return -EINVAL;
 470
 471         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
 472         if (ret)
 473                 return ret;
 474
 475         /* add back binding - XXX refactor? */
 476         binding_cmd.id_and_color =
 477                 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
 478                                                 mvmvif->phy_ctxt->color));
 479         binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD);
 480         binding_cmd.phy =
 481                 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
 482                                                 mvmvif->phy_ctxt->color));
 483         binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
 484                                                               mvmvif->color));
 485         for (i = 1; i < MAX_MACS_IN_BINDING; i++)
 486                 binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID);
 487
 488         status = 0;
 489         ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD,
 490                                           IWL_BINDING_CMD_SIZE_V1, &binding_cmd,
 491                                           &status);
 492         if (ret) {
 493                 IWL_ERR(mvm, "Failed to add binding: %d\n", ret);
 494                 return ret;
 495         }
 496
 497         if (status) {
 498                 IWL_ERR(mvm, "Binding command failed: %u\n", status);
 499                 return -EIO;
 500         }
 501
 502         ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false, 0);
 503         if (ret)
 504                 return ret;
 505         rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], ap_sta);
 506
 507         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
 508         if (ret)
 509                 return ret;
 510
 511         /* and some quota */
 512         quota = iwl_mvm_quota_cmd_get_quota(mvm, &quota_cmd, 0);
 513         quota->id_and_color =
 514                 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
 515                                                 mvmvif->phy_ctxt->color));
 516         quota->quota = cpu_to_le32(IWL_MVM_MAX_QUOTA);
 517         quota->max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA);
 518
 519         for (i = 1; i < MAX_BINDINGS; i++) {
 520                 quota = iwl_mvm_quota_cmd_get_quota(mvm, &quota_cmd, i);
 521                 quota->id_and_color = cpu_to_le32(FW_CTXT_INVALID);
 522         }
 523
 524         ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0,
 525                                    iwl_mvm_quota_cmd_size(mvm), &quota_cmd);
 526         if (ret)
 527                 IWL_ERR(mvm, "Failed to send quota: %d\n", ret);
 528
 529         if (iwl_mvm_is_lar_supported(mvm) && iwl_mvm_init_fw_regd(mvm))
 530                 IWL_ERR(mvm, "Failed to initialize D3 LAR information\n");
 531
 532         return 0;
 533 }
 534
 535 static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm,
 536                                        struct ieee80211_vif *vif)
 537 {
 538         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 539         struct iwl_nonqos_seq_query_cmd query_cmd = {
 540                 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET),
 541                 .mac_id_n_color =
 542                         cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
 543                                                         mvmvif->color)),
 544         };
 545         struct iwl_host_cmd cmd = {
 546                 .id = NON_QOS_TX_COUNTER_CMD,
 547                 .flags = CMD_WANT_SKB,
 548         };
 549         int err;
 550         u32 size;
 551
 552         cmd.data[0] = &query_cmd;
 553         cmd.len[0] = sizeof(query_cmd);
 554
 555         err = iwl_mvm_send_cmd(mvm, &cmd);
 556         if (err)
 557                 return err;
 558
 559         size = iwl_rx_packet_payload_len(cmd.resp_pkt);
 560         if (size < sizeof(__le16)) {
 561                 err = -EINVAL;
 562         } else {
 563                 err = le16_to_cpup((__le16 *)cmd.resp_pkt->data);
 564                 /* firmware returns next, not last-used seqno */
 565                 err = (u16) (err - 0x10);
 566         }
 567
 568         iwl_free_resp(&cmd);
 569         return err;
 570 }
 571
 572 void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
 573 {
 574         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 575         struct iwl_nonqos_seq_query_cmd query_cmd = {
 576                 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET),
 577                 .mac_id_n_color =
 578                         cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
 579                                                         mvmvif->color)),
 580                 .value = cpu_to_le16(mvmvif->seqno),
 581         };
 582
 583         /* return if called during restart, not resume from D3 */
 584         if (!mvmvif->seqno_valid)
 585                 return;
 586
 587         mvmvif->seqno_valid = false;
 588
 589         if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0,
 590                                  sizeof(query_cmd), &query_cmd))
 591                 IWL_ERR(mvm, "failed to set non-QoS seqno\n");
 592 }
 593
 594 static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm)
 595 {
 596         iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
 597
 598         iwl_mvm_stop_device(mvm);
 599         /*
 600          * Set the HW restart bit -- this is mostly true as we're
 601          * going to load new firmware and reprogram that, though
 602          * the reprogramming is going to be manual to avoid adding
 603          * all the MACs that aren't support.
 604          * We don't have to clear up everything though because the
 605          * reprogramming is manual. When we resume, we'll actually
 606          * go through a proper restart sequence again to switch
 607          * back to the runtime firmware image.
 608          */
 609         set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
 610
 611         /* the fw is reset, so all the keys are cleared */
 612         memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
 613
 614         mvm->ptk_ivlen = 0;
 615         mvm->ptk_icvlen = 0;
 616         mvm->ptk_ivlen = 0;
 617         mvm->ptk_icvlen = 0;
 618
 619         return iwl_mvm_load_d3_fw(mvm);
 620 }
 621
 622 static int
 623 iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm,
 624                           struct cfg80211_wowlan *wowlan,
 625                           struct iwl_wowlan_config_cmd *wowlan_config_cmd,
 626                           struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
 627                           struct ieee80211_sta *ap_sta)
 628 {
 629         int ret;
 630         struct iwl_mvm_sta *mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
 631
 632         /* TODO: wowlan_config_cmd->wowlan_ba_teardown_tids */
 633
 634         wowlan_config_cmd->is_11n_connection =
 635                                         ap_sta->ht_cap.ht_supported;
 636         wowlan_config_cmd->flags = ENABLE_L3_FILTERING |
 637                 ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING;
 638
 639         /* Query the last used seqno and set it */
 640         ret = iwl_mvm_get_last_nonqos_seq(mvm, vif);
 641         if (ret < 0)
 642                 return ret;
 643
 644         wowlan_config_cmd->non_qos_seq = cpu_to_le16(ret);
 645
 646         iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, wowlan_config_cmd);
 647
 648         if (wowlan->disconnect)
 649                 wowlan_config_cmd->wakeup_filter |=
 650                         cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
 651                                     IWL_WOWLAN_WAKEUP_LINK_CHANGE);
 652         if (wowlan->magic_pkt)
 653                 wowlan_config_cmd->wakeup_filter |=
 654                         cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET);
 655         if (wowlan->gtk_rekey_failure)
 656                 wowlan_config_cmd->wakeup_filter |=
 657                         cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
 658         if (wowlan->eap_identity_req)
 659                 wowlan_config_cmd->wakeup_filter |=
 660                         cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ);
 661         if (wowlan->four_way_handshake)
 662                 wowlan_config_cmd->wakeup_filter |=
 663                         cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
 664         if (wowlan->n_patterns)
 665                 wowlan_config_cmd->wakeup_filter |=
 666                         cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH);
 667
 668         if (wowlan->rfkill_release)
 669                 wowlan_config_cmd->wakeup_filter |=
 670                         cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
 671
 672         if (wowlan->tcp) {
 673                 /*
 674                  * Set the "link change" (really "link lost") flag as well
 675                  * since that implies losing the TCP connection.
 676                  */
 677                 wowlan_config_cmd->wakeup_filter |=
 678                         cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS |
 679                                     IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE |
 680                                     IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET |
 681                                     IWL_WOWLAN_WAKEUP_LINK_CHANGE);
 682         }
 683
 684         if (wowlan->any) {
 685                 wowlan_config_cmd->wakeup_filter |=
 686                         cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
 687                                     IWL_WOWLAN_WAKEUP_LINK_CHANGE |
 688                                     IWL_WOWLAN_WAKEUP_RX_FRAME |
 689                                     IWL_WOWLAN_WAKEUP_BCN_FILTERING);
 690         }
 691
 692         return 0;
 693 }
 694
 695 static void
 696 iwl_mvm_iter_d0i3_ap_keys(struct iwl_mvm *mvm,
 697                           struct ieee80211_vif *vif,
 698                           void (*iter)(struct ieee80211_hw *hw,
 699                                        struct ieee80211_vif *vif,
 700                                        struct ieee80211_sta *sta,
 701                                        struct ieee80211_key_conf *key,
 702                                        void *data),
 703                           void *data)
 704 {
 705         struct ieee80211_sta *ap_sta;
 706
 707         rcu_read_lock();
 708
 709         ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id]);
 710         if (IS_ERR_OR_NULL(ap_sta))
 711                 goto out;
 712
 713         ieee80211_iter_keys_rcu(mvm->hw, vif, iter, data);
 714 out:
 715         rcu_read_unlock();
 716 }
 717
 718 int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm,
 719                                      struct ieee80211_vif *vif,
 720                                      bool d0i3,
 721                                      u32 cmd_flags)
 722 {
 723         struct iwl_wowlan_kek_kck_material_cmd kek_kck_cmd = {};
 724         struct iwl_wowlan_tkip_params_cmd tkip_cmd = {};
 725         bool unified = fw_has_capa(&mvm->fw->ucode_capa,
 726                                    IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
 727         struct wowlan_key_data key_data = {
 728                 .configure_keys = !d0i3 && !unified,
 729                 .use_rsc_tsc = false,
 730                 .tkip = &tkip_cmd,
 731                 .use_tkip = false,
 732         };
 733         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 734         int ret;
 735
 736         key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
 737         if (!key_data.rsc_tsc)
 738                 return -ENOMEM;
 739
 740         /*
 741          * if we have to configure keys, call ieee80211_iter_keys(),
 742          * as we need non-atomic context in order to take the
 743          * required locks.
 744          * for the d0i3 we can't use ieee80211_iter_keys(), as
 745          * taking (almost) any mutex might result in deadlock.
 746          */
 747         if (!d0i3) {
 748                 /*
 749                  * Note that currently we don't propagate cmd_flags
 750                  * to the iterator. In case of key_data.configure_keys,
 751                  * all the configured commands are SYNC, and
 752                  * iwl_mvm_wowlan_program_keys() will take care of
 753                  * locking/unlocking mvm->mutex.
 754                  */
 755                 ieee80211_iter_keys(mvm->hw, vif,
 756                                     iwl_mvm_wowlan_program_keys,
 757                                     &key_data);
 758         } else {
 759                 iwl_mvm_iter_d0i3_ap_keys(mvm, vif,
 760                                           iwl_mvm_wowlan_program_keys,
 761                                           &key_data);
 762         }
 763
 764         if (key_data.error) {
 765                 ret = -EIO;
 766                 goto out;
 767         }
 768
 769         if (key_data.use_rsc_tsc) {
 770                 ret = iwl_mvm_send_cmd_pdu(mvm,
 771                                            WOWLAN_TSC_RSC_PARAM, cmd_flags,
 772                                            sizeof(*key_data.rsc_tsc),
 773                                            key_data.rsc_tsc);
 774                 if (ret)
 775                         goto out;
 776         }
 777
 778         if (key_data.use_tkip &&
 779             !fw_has_api(&mvm->fw->ucode_capa,
 780                         IWL_UCODE_TLV_API_TKIP_MIC_KEYS)) {
 781                 ret = iwl_mvm_send_cmd_pdu(mvm,
 782                                            WOWLAN_TKIP_PARAM,
 783                                            cmd_flags, sizeof(tkip_cmd),
 784                                            &tkip_cmd);
 785                 if (ret)
 786                         goto out;
 787         }
 788
 789         /* configure rekey data only if offloaded rekey is supported (d3) */
 790         if (mvmvif->rekey_data.valid && !d0i3) {
 791                 memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
 792                 memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck,
 793                        NL80211_KCK_LEN);
 794                 kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
 795                 memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek,
 796                        NL80211_KEK_LEN);
 797                 kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
 798                 kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr;
 799
 800                 ret = iwl_mvm_send_cmd_pdu(mvm,
 801                                            WOWLAN_KEK_KCK_MATERIAL, cmd_flags,
 802                                            sizeof(kek_kck_cmd),
 803                                            &kek_kck_cmd);
 804                 if (ret)
 805                         goto out;
 806         }
 807         ret = 0;
 808 out:
 809         kfree(key_data.rsc_tsc);
 810         return ret;
 811 }
 812
 813 static int
 814 iwl_mvm_wowlan_config(struct iwl_mvm *mvm,
 815                       struct cfg80211_wowlan *wowlan,
 816                       struct iwl_wowlan_config_cmd *wowlan_config_cmd,
 817                       struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
 818                       struct ieee80211_sta *ap_sta)
 819 {
 820         int ret;
 821         bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
 822                                          IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
 823
 824         if (!unified_image) {
 825                 ret = iwl_mvm_switch_to_d3(mvm);
 826                 if (ret)
 827                         return ret;
 828
 829                 ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta);
 830                 if (ret)
 831                         return ret;
 832         }
 833
 834         if (!iwlwifi_mod_params.swcrypto) {
 835                 /*
 836                  * This needs to be unlocked due to lock ordering
 837                  * constraints. Since we're in the suspend path
 838                  * that isn't really a problem though.
 839                  */
 840                 mutex_unlock(&mvm->mutex);
 841                 ret = iwl_mvm_wowlan_config_key_params(mvm, vif, false,
 842                                                        CMD_ASYNC);
 843                 mutex_lock(&mvm->mutex);
 844                 if (ret)
 845                         return ret;
 846         }
 847
 848         ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0,
 849                                    sizeof(*wowlan_config_cmd),
 850                                    wowlan_config_cmd);
 851         if (ret)
 852                 return ret;
 853
 854         ret = iwl_mvm_send_patterns(mvm, wowlan);
 855         if (ret)
 856                 return ret;
 857
 858         return iwl_mvm_send_proto_offload(mvm, vif, false, true, 0);
 859 }
 860
 861 static int
 862 iwl_mvm_netdetect_config(struct iwl_mvm *mvm,
 863                          struct cfg80211_wowlan *wowlan,
 864                          struct cfg80211_sched_scan_request *nd_config,
 865                          struct ieee80211_vif *vif)
 866 {
 867         struct iwl_wowlan_config_cmd wowlan_config_cmd = {};
 868         int ret;
 869         bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
 870                                          IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
 871
 872         if (!unified_image) {
 873                 ret = iwl_mvm_switch_to_d3(mvm);
 874                 if (ret)
 875                         return ret;
 876         } else {
 877                 /* In theory, we wouldn't have to stop a running sched
 878                  * scan in order to start another one (for
 879                  * net-detect).  But in practice this doesn't seem to
 880                  * work properly, so stop any running sched_scan now.
 881                  */
 882                 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
 883                 if (ret)
 884                         return ret;
 885         }
 886
 887         /* rfkill release can be either for wowlan or netdetect */
 888         if (wowlan->rfkill_release)
 889                 wowlan_config_cmd.wakeup_filter |=
 890                         cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
 891
 892         ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0,
 893                                    sizeof(wowlan_config_cmd),
 894                                    &wowlan_config_cmd);
 895         if (ret)
 896                 return ret;
 897
 898         ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies,
 899                                        IWL_MVM_SCAN_NETDETECT);
 900         if (ret)
 901                 return ret;
 902
 903         if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels))
 904                 return -EBUSY;
 905
 906         /* save the sched scan matchsets... */
 907         if (nd_config->n_match_sets) {
 908                 mvm->nd_match_sets = kmemdup(nd_config->match_sets,
 909                                              sizeof(*nd_config->match_sets) *
 910                                              nd_config->n_match_sets,
 911                                              GFP_KERNEL);
 912                 if (mvm->nd_match_sets)
 913                         mvm->n_nd_match_sets = nd_config->n_match_sets;
 914         }
 915
 916         /* ...and the sched scan channels for later reporting */
 917         mvm->nd_channels = kmemdup(nd_config->channels,
 918                                    sizeof(*nd_config->channels) *
 919                                    nd_config->n_channels,
 920                                    GFP_KERNEL);
 921         if (mvm->nd_channels)
 922                 mvm->n_nd_channels = nd_config->n_channels;
 923
 924         return 0;
 925 }
 926
 927 static void iwl_mvm_free_nd(struct iwl_mvm *mvm)
 928 {
 929         kfree(mvm->nd_match_sets);
 930         mvm->nd_match_sets = NULL;
 931         mvm->n_nd_match_sets = 0;
 932         kfree(mvm->nd_channels);
 933         mvm->nd_channels = NULL;
 934         mvm->n_nd_channels = 0;
 935 }
 936
 937 static int __iwl_mvm_suspend(struct ieee80211_hw *hw,
 938                              struct cfg80211_wowlan *wowlan,
 939                              bool test)
 940 {
 941         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 942         struct ieee80211_vif *vif = NULL;
 943         struct iwl_mvm_vif *mvmvif = NULL;
 944         struct ieee80211_sta *ap_sta = NULL;
 945         struct iwl_d3_manager_config d3_cfg_cmd_data = {
 946                 /*
 947                  * Program the minimum sleep time to 10 seconds, as many
 948                  * platforms have issues processing a wakeup signal while
 949                  * still being in the process of suspending.
 950                  */
 951                 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000),
 952         };
 953         struct iwl_host_cmd d3_cfg_cmd = {
 954                 .id = D3_CONFIG_CMD,
 955                 .flags = CMD_WANT_SKB,
 956                 .data[0] = &d3_cfg_cmd_data,
 957                 .len[0] = sizeof(d3_cfg_cmd_data),
 958         };
 959         int ret;
 960         int len __maybe_unused;
 961         bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
 962                                          IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
 963
 964         if (!wowlan) {
 965                 /*
 966                  * mac80211 shouldn't get here, but for D3 test
 967                  * it doesn't warrant a warning
 968                  */
 969                 WARN_ON(!test);
 970                 return -EINVAL;
 971         }
 972
 973         mutex_lock(&mvm->mutex);
 974
 975         vif = iwl_mvm_get_bss_vif(mvm);
 976         if (IS_ERR_OR_NULL(vif)) {
 977                 ret = 1;
 978                 goto out_noreset;
 979         }
 980
 981         mvmvif = iwl_mvm_vif_from_mac80211(vif);
 982
 983         if (mvmvif->ap_sta_id == IWL_MVM_INVALID_STA) {
 984                 /* if we're not associated, this must be netdetect */
 985                 if (!wowlan->nd_config) {
 986                         ret = 1;
 987                         goto out_noreset;
 988                 }
 989
 990                 ret = iwl_mvm_netdetect_config(
 991                         mvm, wowlan, wowlan->nd_config, vif);
 992                 if (ret)
 993                         goto out;
 994
 995                 mvm->net_detect = true;
 996         } else {
 997                 struct iwl_wowlan_config_cmd wowlan_config_cmd = {};
 998
 999                 ap_sta = rcu_dereference_protected(
1000                         mvm->fw_id_to_mac_id[mvmvif->ap_sta_id],
1001                         lockdep_is_held(&mvm->mutex));
1002                 if (IS_ERR_OR_NULL(ap_sta)) {
1003                         ret = -EINVAL;
1004                         goto out_noreset;
1005                 }
1006
1007                 ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1008                                                 vif, mvmvif, ap_sta);
1009                 if (ret)
1010                         goto out_noreset;
1011                 ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1012                                             vif, mvmvif, ap_sta);
1013                 if (ret)
1014                         goto out;
1015
1016                 mvm->net_detect = false;
1017         }
1018
1019         ret = iwl_mvm_power_update_device(mvm);
1020         if (ret)
1021                 goto out;
1022
1023         ret = iwl_mvm_power_update_mac(mvm);
1024         if (ret)
1025                 goto out;
1026
1027 #ifdef CONFIG_IWLWIFI_DEBUGFS
1028         if (mvm->d3_wake_sysassert)
1029                 d3_cfg_cmd_data.wakeup_flags |=
1030                         cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR);
1031 #endif
1032
1033         /*
1034          * TODO: this is needed because the firmware is not stopping
1035          * the recording automatically before entering D3.  This can
1036          * be removed once the FW starts doing that.
1037          */
1038         _iwl_fw_dbg_stop_recording(mvm->fwrt.trans, NULL);
1039
1040         /* must be last -- this switches firmware state */
1041         ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd);
1042         if (ret)
1043                 goto out;
1044 #ifdef CONFIG_IWLWIFI_DEBUGFS
1045         len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt);
1046         if (len >= sizeof(u32)) {
1047                 mvm->d3_test_pme_ptr =
1048                         le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data);
1049         }
1050 #endif
1051         iwl_free_resp(&d3_cfg_cmd);
1052
1053         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1054
1055         iwl_trans_d3_suspend(mvm->trans, test, !unified_image);
1056  out:
1057         if (ret < 0) {
1058                 iwl_mvm_free_nd(mvm);
1059
1060                 if (!unified_image) {
1061                         iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1062                         if (mvm->fw_restart > 0) {
1063                                 mvm->fw_restart--;
1064                                 ieee80211_restart_hw(mvm->hw);
1065                         }
1066                 }
1067         }
1068  out_noreset:
1069         mutex_unlock(&mvm->mutex);
1070
1071         return ret;
1072 }
1073
1074 static int iwl_mvm_enter_d0i3_sync(struct iwl_mvm *mvm)
1075 {
1076         struct iwl_notification_wait wait_d3;
1077         static const u16 d3_notif[] = { D3_CONFIG_CMD };
1078         int ret;
1079
1080         iwl_init_notification_wait(&mvm->notif_wait, &wait_d3,
1081                                    d3_notif, ARRAY_SIZE(d3_notif),
1082                                    NULL, NULL);
1083
1084         ret = iwl_mvm_enter_d0i3(mvm->hw->priv);
1085         if (ret)
1086                 goto remove_notif;
1087
1088         ret = iwl_wait_notification(&mvm->notif_wait, &wait_d3, HZ);
1089         WARN_ON_ONCE(ret);
1090         return ret;
1091
1092 remove_notif:
1093         iwl_remove_notification(&mvm->notif_wait, &wait_d3);
1094         return ret;
1095 }
1096
1097 int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
1098 {
1099         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1100         struct iwl_trans *trans = mvm->trans;
1101         int ret;
1102
1103         /* make sure the d0i3 exit work is not pending */
1104         flush_work(&mvm->d0i3_exit_work);
1105         iwl_mvm_pause_tcm(mvm, true);
1106
1107         iwl_fw_runtime_suspend(&mvm->fwrt);
1108
1109         ret = iwl_trans_suspend(trans);
1110         if (ret)
1111                 return ret;
1112
1113         if (wowlan->any) {
1114                 trans->system_pm_mode = IWL_PLAT_PM_MODE_D0I3;
1115
1116                 if (iwl_mvm_enter_d0i3_on_suspend(mvm)) {
1117                         ret = iwl_mvm_enter_d0i3_sync(mvm);
1118
1119                         if (ret)
1120                                 return ret;
1121                 }
1122
1123                 mutex_lock(&mvm->d0i3_suspend_mutex);
1124                 __set_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags);
1125                 mutex_unlock(&mvm->d0i3_suspend_mutex);
1126
1127                 iwl_trans_d3_suspend(trans, false, false);
1128
1129                 return 0;
1130         }
1131
1132         trans->system_pm_mode = IWL_PLAT_PM_MODE_D3;
1133
1134         return __iwl_mvm_suspend(hw, wowlan, false);
1135 }
1136
1137 /* converted data from the different status responses */
1138 struct iwl_wowlan_status_data {
1139         u16 pattern_number;
1140         u16 qos_seq_ctr[8];
1141         u32 wakeup_reasons;
1142         u32 wake_packet_length;
1143         u32 wake_packet_bufsize;
1144         const u8 *wake_packet;
1145 };
1146
1147 static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm,
1148                                           struct ieee80211_vif *vif,
1149                                           struct iwl_wowlan_status_data *status)
1150 {
1151         struct sk_buff *pkt = NULL;
1152         struct cfg80211_wowlan_wakeup wakeup = {
1153                 .pattern_idx = -1,
1154         };
1155         struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
1156         u32 reasons = status->wakeup_reasons;
1157
1158         if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
1159                 wakeup_report = NULL;
1160                 goto report;
1161         }
1162
1163         pm_wakeup_event(mvm->dev, 0);
1164
1165         if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET)
1166                 wakeup.magic_pkt = true;
1167
1168         if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN)
1169                 wakeup.pattern_idx =
1170                         status->pattern_number;
1171
1172         if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1173                        IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH))
1174                 wakeup.disconnect = true;
1175
1176         if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)
1177                 wakeup.gtk_rekey_failure = true;
1178
1179         if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
1180                 wakeup.rfkill_release = true;
1181
1182         if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST)
1183                 wakeup.eap_identity_req = true;
1184
1185         if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE)
1186                 wakeup.four_way_handshake = true;
1187
1188         if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS)
1189                 wakeup.tcp_connlost = true;
1190
1191         if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE)
1192                 wakeup.tcp_nomoretokens = true;
1193
1194         if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET)
1195                 wakeup.tcp_match = true;
1196
1197         if (status->wake_packet_bufsize) {
1198                 int pktsize = status->wake_packet_bufsize;
1199                 int pktlen = status->wake_packet_length;
1200                 const u8 *pktdata = status->wake_packet;
1201                 struct ieee80211_hdr *hdr = (void *)pktdata;
1202                 int truncated = pktlen - pktsize;
1203
1204                 /* this would be a firmware bug */
1205                 if (WARN_ON_ONCE(truncated < 0))
1206                         truncated = 0;
1207
1208                 if (ieee80211_is_data(hdr->frame_control)) {
1209                         int hdrlen = ieee80211_hdrlen(hdr->frame_control);
1210                         int ivlen = 0, icvlen = 4; /* also FCS */
1211
1212                         pkt = alloc_skb(pktsize, GFP_KERNEL);
1213                         if (!pkt)
1214                                 goto report;
1215
1216                         skb_put_data(pkt, pktdata, hdrlen);
1217                         pktdata += hdrlen;
1218                         pktsize -= hdrlen;
1219
1220                         if (ieee80211_has_protected(hdr->frame_control)) {
1221                                 /*
1222                                  * This is unlocked and using gtk_i(c)vlen,
1223                                  * but since everything is under RTNL still
1224                                  * that's not really a problem - changing
1225                                  * it would be difficult.
1226                                  */
1227                                 if (is_multicast_ether_addr(hdr->addr1)) {
1228                                         ivlen = mvm->gtk_ivlen;
1229                                         icvlen += mvm->gtk_icvlen;
1230                                 } else {
1231                                         ivlen = mvm->ptk_ivlen;
1232                                         icvlen += mvm->ptk_icvlen;
1233                                 }
1234                         }
1235
1236                         /* if truncated, FCS/ICV is (partially) gone */
1237                         if (truncated >= icvlen) {
1238                                 icvlen = 0;
1239                                 truncated -= icvlen;
1240                         } else {
1241                                 icvlen -= truncated;
1242                                 truncated = 0;
1243                         }
1244
1245                         pktsize -= ivlen + icvlen;
1246                         pktdata += ivlen;
1247
1248                         skb_put_data(pkt, pktdata, pktsize);
1249
1250                         if (ieee80211_data_to_8023(pkt, vif->addr, vif->type))
1251                                 goto report;
1252                         wakeup.packet = pkt->data;
1253                         wakeup.packet_present_len = pkt->len;
1254                         wakeup.packet_len = pkt->len - truncated;
1255                         wakeup.packet_80211 = false;
1256                 } else {
1257                         int fcslen = 4;
1258
1259                         if (truncated >= 4) {
1260                                 truncated -= 4;
1261                                 fcslen = 0;
1262                         } else {
1263                                 fcslen -= truncated;
1264                                 truncated = 0;
1265                         }
1266                         pktsize -= fcslen;
1267                         wakeup.packet = status->wake_packet;
1268                         wakeup.packet_present_len = pktsize;
1269                         wakeup.packet_len = pktlen - truncated;
1270                         wakeup.packet_80211 = true;
1271                 }
1272         }
1273
1274  report:
1275         ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
1276         kfree_skb(pkt);
1277 }
1278
1279 static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc,
1280                                   struct ieee80211_key_seq *seq)
1281 {
1282         u64 pn;
1283
1284         pn = le64_to_cpu(sc->pn);
1285         seq->ccmp.pn[0] = pn >> 40;
1286         seq->ccmp.pn[1] = pn >> 32;
1287         seq->ccmp.pn[2] = pn >> 24;
1288         seq->ccmp.pn[3] = pn >> 16;
1289         seq->ccmp.pn[4] = pn >> 8;
1290         seq->ccmp.pn[5] = pn;
1291 }
1292
1293 static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc,
1294                                    struct ieee80211_key_seq *seq)
1295 {
1296         seq->tkip.iv32 = le32_to_cpu(sc->iv32);
1297         seq->tkip.iv16 = le16_to_cpu(sc->iv16);
1298 }
1299
1300 static void iwl_mvm_set_aes_rx_seq(struct iwl_mvm *mvm, struct aes_sc *scs,
1301                                    struct ieee80211_sta *sta,
1302                                    struct ieee80211_key_conf *key)
1303 {
1304         int tid;
1305
1306         BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS);
1307
1308         if (sta && iwl_mvm_has_new_rx_api(mvm)) {
1309                 struct iwl_mvm_sta *mvmsta;
1310                 struct iwl_mvm_key_pn *ptk_pn;
1311
1312                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1313
1314                 ptk_pn = rcu_dereference_protected(mvmsta->ptk_pn[key->keyidx],
1315                                                    lockdep_is_held(&mvm->mutex));
1316                 if (WARN_ON(!ptk_pn))
1317                         return;
1318
1319                 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1320                         struct ieee80211_key_seq seq = {};
1321                         int i;
1322
1323                         iwl_mvm_aes_sc_to_seq(&scs[tid], &seq);
1324                         ieee80211_set_key_rx_seq(key, tid, &seq);
1325                         for (i = 1; i < mvm->trans->num_rx_queues; i++)
1326                                 memcpy(ptk_pn->q[i].pn[tid],
1327                                        seq.ccmp.pn, IEEE80211_CCMP_PN_LEN);
1328                 }
1329         } else {
1330                 for (tid = 0; tid < IWL_NUM_RSC; tid++) {
1331                         struct ieee80211_key_seq seq = {};
1332
1333                         iwl_mvm_aes_sc_to_seq(&scs[tid], &seq);
1334                         ieee80211_set_key_rx_seq(key, tid, &seq);
1335                 }
1336         }
1337 }
1338
1339 static void iwl_mvm_set_tkip_rx_seq(struct tkip_sc *scs,
1340                                     struct ieee80211_key_conf *key)
1341 {
1342         int tid;
1343
1344         BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS);
1345
1346         for (tid = 0; tid < IWL_NUM_RSC; tid++) {
1347                 struct ieee80211_key_seq seq = {};
1348
1349                 iwl_mvm_tkip_sc_to_seq(&scs[tid], &seq);
1350                 ieee80211_set_key_rx_seq(key, tid, &seq);
1351         }
1352 }
1353
1354 static void iwl_mvm_set_key_rx_seq(struct iwl_mvm *mvm,
1355                                    struct ieee80211_key_conf *key,
1356                                    struct iwl_wowlan_status *status)
1357 {
1358         union iwl_all_tsc_rsc *rsc = &status->gtk[0].rsc.all_tsc_rsc;
1359
1360         switch (key->cipher) {
1361         case WLAN_CIPHER_SUITE_CCMP:
1362                 iwl_mvm_set_aes_rx_seq(mvm, rsc->aes.multicast_rsc, NULL, key);
1363                 break;
1364         case WLAN_CIPHER_SUITE_TKIP:
1365                 iwl_mvm_set_tkip_rx_seq(rsc->tkip.multicast_rsc, key);
1366                 break;
1367         default:
1368                 WARN_ON(1);
1369         }
1370 }
1371
1372 struct iwl_mvm_d3_gtk_iter_data {
1373         struct iwl_mvm *mvm;
1374         struct iwl_wowlan_status *status;
1375         void *last_gtk;
1376         u32 cipher;
1377         bool find_phase, unhandled_cipher;
1378         int num_keys;
1379 };
1380
1381 static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw,
1382                                    struct ieee80211_vif *vif,
1383                                    struct ieee80211_sta *sta,
1384                                    struct ieee80211_key_conf *key,
1385                                    void *_data)
1386 {
1387         struct iwl_mvm_d3_gtk_iter_data *data = _data;
1388
1389         if (data->unhandled_cipher)
1390                 return;
1391
1392         switch (key->cipher) {
1393         case WLAN_CIPHER_SUITE_WEP40:
1394         case WLAN_CIPHER_SUITE_WEP104:
1395                 /* ignore WEP completely, nothing to do */
1396                 return;
1397         case WLAN_CIPHER_SUITE_CCMP:
1398         case WLAN_CIPHER_SUITE_TKIP:
1399                 /* we support these */
1400                 break;
1401         default:
1402                 /* everything else (even CMAC for MFP) - disconnect from AP */
1403                 data->unhandled_cipher = true;
1404                 return;
1405         }
1406
1407         data->num_keys++;
1408
1409         /*
1410          * pairwise key - update sequence counters only;
1411          * note that this assumes no TDLS sessions are active
1412          */
1413         if (sta) {
1414                 struct ieee80211_key_seq seq = {};
1415                 union iwl_all_tsc_rsc *sc =
1416                         &data->status->gtk[0].rsc.all_tsc_rsc;
1417
1418                 if (data->find_phase)
1419                         return;
1420
1421                 switch (key->cipher) {
1422                 case WLAN_CIPHER_SUITE_CCMP:
1423                         iwl_mvm_set_aes_rx_seq(data->mvm, sc->aes.unicast_rsc,
1424                                                sta, key);
1425                         atomic64_set(&key->tx_pn, le64_to_cpu(sc->aes.tsc.pn));
1426                         break;
1427                 case WLAN_CIPHER_SUITE_TKIP:
1428                         iwl_mvm_tkip_sc_to_seq(&sc->tkip.tsc, &seq);
1429                         iwl_mvm_set_tkip_rx_seq(sc->tkip.unicast_rsc, key);
1430                         atomic64_set(&key->tx_pn,
1431                                      (u64)seq.tkip.iv16 |
1432                                      ((u64)seq.tkip.iv32 << 16));
1433                         break;
1434                 }
1435
1436                 /* that's it for this key */
1437                 return;
1438         }
1439
1440         if (data->find_phase) {
1441                 data->last_gtk = key;
1442                 data->cipher = key->cipher;
1443                 return;
1444         }
1445
1446         if (data->status->num_of_gtk_rekeys)
1447                 ieee80211_remove_key(key);
1448         else if (data->last_gtk == key)
1449                 iwl_mvm_set_key_rx_seq(data->mvm, key, data->status);
1450 }
1451
1452 static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm,
1453                                           struct ieee80211_vif *vif,
1454                                           struct iwl_wowlan_status *status)
1455 {
1456         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1457         struct iwl_mvm_d3_gtk_iter_data gtkdata = {
1458                 .mvm = mvm,
1459                 .status = status,
1460         };
1461         u32 disconnection_reasons =
1462                 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1463                 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH;
1464
1465         if (!status || !vif->bss_conf.bssid)
1466                 return false;
1467
1468         if (le32_to_cpu(status->wakeup_reasons) & disconnection_reasons)
1469                 return false;
1470
1471         /* find last GTK that we used initially, if any */
1472         gtkdata.find_phase = true;
1473         ieee80211_iter_keys(mvm->hw, vif,
1474                             iwl_mvm_d3_update_keys, &gtkdata);
1475         /* not trying to keep connections with MFP/unhandled ciphers */
1476         if (gtkdata.unhandled_cipher)
1477                 return false;
1478         if (!gtkdata.num_keys)
1479                 goto out;
1480         if (!gtkdata.last_gtk)
1481                 return false;
1482
1483         /*
1484          * invalidate all other GTKs that might still exist and update
1485          * the one that we used
1486          */
1487         gtkdata.find_phase = false;
1488         ieee80211_iter_keys(mvm->hw, vif,
1489                             iwl_mvm_d3_update_keys, &gtkdata);
1490
1491         if (status->num_of_gtk_rekeys) {
1492                 struct ieee80211_key_conf *key;
1493                 struct {
1494                         struct ieee80211_key_conf conf;
1495                         u8 key[32];
1496                 } conf = {
1497                         .conf.cipher = gtkdata.cipher,
1498                         .conf.keyidx =
1499                                 iwlmvm_wowlan_gtk_idx(&status->gtk[0]),
1500                 };
1501                 __be64 replay_ctr;
1502
1503                 switch (gtkdata.cipher) {
1504                 case WLAN_CIPHER_SUITE_CCMP:
1505                         conf.conf.keylen = WLAN_KEY_LEN_CCMP;
1506                         memcpy(conf.conf.key, status->gtk[0].key,
1507                                WLAN_KEY_LEN_CCMP);
1508                         break;
1509                 case WLAN_CIPHER_SUITE_TKIP:
1510                         conf.conf.keylen = WLAN_KEY_LEN_TKIP;
1511                         memcpy(conf.conf.key, status->gtk[0].key, 16);
1512                         /* leave TX MIC key zeroed, we don't use it anyway */
1513                         memcpy(conf.conf.key +
1514                                NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
1515                                status->gtk[0].tkip_mic_key, 8);
1516                         break;
1517                 }
1518
1519                 key = ieee80211_gtk_rekey_add(vif, &conf.conf);
1520                 if (IS_ERR(key))
1521                         return false;
1522                 iwl_mvm_set_key_rx_seq(mvm, key, status);
1523
1524                 replay_ctr =
1525                         cpu_to_be64(le64_to_cpu(status->replay_ctr));
1526
1527                 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid,
1528                                            (void *)&replay_ctr, GFP_KERNEL);
1529         }
1530
1531 out:
1532         mvmvif->seqno_valid = true;
1533         /* +0x10 because the set API expects next-to-use, not last-used */
1534         mvmvif->seqno = le16_to_cpu(status->non_qos_seq_ctr) + 0x10;
1535
1536         return true;
1537 }
1538
1539 struct iwl_wowlan_status *iwl_mvm_send_wowlan_get_status(struct iwl_mvm *mvm)
1540 {
1541         struct iwl_wowlan_status *v7, *status;
1542         struct iwl_host_cmd cmd = {
1543                 .id = WOWLAN_GET_STATUSES,
1544                 .flags = CMD_WANT_SKB,
1545         };
1546         int ret, len, status_size;
1547
1548         lockdep_assert_held(&mvm->mutex);
1549
1550         ret = iwl_mvm_send_cmd(mvm, &cmd);
1551         if (ret) {
1552                 IWL_ERR(mvm, "failed to query wakeup status (%d)\n", ret);
1553                 return ERR_PTR(ret);
1554         }
1555
1556         if (!fw_has_api(&mvm->fw->ucode_capa,
1557                         IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL)) {
1558                 struct iwl_wowlan_status_v6 *v6 = (void *)cmd.resp_pkt->data;
1559                 int data_size;
1560
1561                 status_size = sizeof(*v6);
1562                 len = iwl_rx_packet_payload_len(cmd.resp_pkt);
1563
1564                 if (len < status_size) {
1565                         IWL_ERR(mvm, "Invalid WoWLAN status response!\n");
1566                         status = ERR_PTR(-EIO);
1567                         goto out_free_resp;
1568                 }
1569
1570                 data_size = ALIGN(le32_to_cpu(v6->wake_packet_bufsize), 4);
1571
1572                 if (len != (status_size + data_size)) {
1573                         IWL_ERR(mvm, "Invalid WoWLAN status response!\n");
1574                         status = ERR_PTR(-EIO);
1575                         goto out_free_resp;
1576                 }
1577
1578                 status = kzalloc(sizeof(*status) + data_size, GFP_KERNEL);
1579                 if (!status)
1580                         goto out_free_resp;
1581
1582                 BUILD_BUG_ON(sizeof(v6->gtk.decrypt_key) >
1583                              sizeof(status->gtk[0].key));
1584                 BUILD_BUG_ON(sizeof(v6->gtk.tkip_mic_key) >
1585                              sizeof(status->gtk[0].tkip_mic_key));
1586
1587                 /* copy GTK info to the right place */
1588                 memcpy(status->gtk[0].key, v6->gtk.decrypt_key,
1589                        sizeof(v6->gtk.decrypt_key));
1590                 memcpy(status->gtk[0].tkip_mic_key, v6->gtk.tkip_mic_key,
1591                        sizeof(v6->gtk.tkip_mic_key));
1592                 memcpy(&status->gtk[0].rsc, &v6->gtk.rsc,
1593                        sizeof(status->gtk[0].rsc));
1594
1595                 /* hardcode the key length to 16 since v6 only supports 16 */
1596                 status->gtk[0].key_len = 16;
1597
1598                 /*
1599                  * The key index only uses 2 bits (values 0 to 3) and
1600                  * we always set bit 7 which means this is the
1601                  * currently used key.
1602                  */
1603                 status->gtk[0].key_flags = v6->gtk.key_index | BIT(7);
1604
1605                 status->replay_ctr = v6->replay_ctr;
1606
1607                 /* everything starting from pattern_number is identical */
1608                 memcpy(&status->pattern_number, &v6->pattern_number,
1609                        offsetof(struct iwl_wowlan_status, wake_packet) -
1610                        offsetof(struct iwl_wowlan_status, pattern_number) +
1611                        data_size);
1612
1613                 goto out_free_resp;
1614         }
1615
1616         v7 = (void *)cmd.resp_pkt->data;
1617         status_size = sizeof(*v7);
1618         len = iwl_rx_packet_payload_len(cmd.resp_pkt);
1619
1620         if (len < status_size) {
1621                 IWL_ERR(mvm, "Invalid WoWLAN status response!\n");
1622                 status = ERR_PTR(-EIO);
1623                 goto out_free_resp;
1624         }
1625
1626         if (len != (status_size +
1627                     ALIGN(le32_to_cpu(v7->wake_packet_bufsize), 4))) {
1628                 IWL_ERR(mvm, "Invalid WoWLAN status response!\n");
1629                 status = ERR_PTR(-EIO);
1630                 goto out_free_resp;
1631         }
1632
1633         status = kmemdup(v7, len, GFP_KERNEL);
1634
1635 out_free_resp:
1636         iwl_free_resp(&cmd);
1637         return status;
1638 }
1639
1640 static struct iwl_wowlan_status *
1641 iwl_mvm_get_wakeup_status(struct iwl_mvm *mvm)
1642 {
1643         int ret;
1644
1645         /* only for tracing for now */
1646         ret = iwl_mvm_send_cmd_pdu(mvm, OFFLOADS_QUERY_CMD, 0, 0, NULL);
1647         if (ret)
1648                 IWL_ERR(mvm, "failed to query offload statistics (%d)\n", ret);
1649
1650         return iwl_mvm_send_wowlan_get_status(mvm);
1651 }
1652
1653 /* releases the MVM mutex */
1654 static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm,
1655                                          struct ieee80211_vif *vif)
1656 {
1657         struct iwl_wowlan_status_data status;
1658         struct iwl_wowlan_status *fw_status;
1659         int i;
1660         bool keep;
1661         struct iwl_mvm_sta *mvm_ap_sta;
1662
1663         fw_status = iwl_mvm_get_wakeup_status(mvm);
1664         if (IS_ERR_OR_NULL(fw_status))
1665                 goto out_unlock;
1666
1667         status.pattern_number = le16_to_cpu(fw_status->pattern_number);
1668         for (i = 0; i < 8; i++)
1669                 status.qos_seq_ctr[i] =
1670                         le16_to_cpu(fw_status->qos_seq_ctr[i]);
1671         status.wakeup_reasons = le32_to_cpu(fw_status->wakeup_reasons);
1672         status.wake_packet_length =
1673                 le32_to_cpu(fw_status->wake_packet_length);
1674         status.wake_packet_bufsize =
1675                 le32_to_cpu(fw_status->wake_packet_bufsize);
1676         status.wake_packet = fw_status->wake_packet;
1677
1678         /* still at hard-coded place 0 for D3 image */
1679         mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, 0);
1680         if (!mvm_ap_sta)
1681                 goto out_free;
1682
1683         for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1684                 u16 seq = status.qos_seq_ctr[i];
1685                 /* firmware stores last-used value, we store next value */
1686                 seq += 0x10;
1687                 mvm_ap_sta->tid_data[i].seq_number = seq;
1688         }
1689
1690         /* now we have all the data we need, unlock to avoid mac80211 issues */
1691         mutex_unlock(&mvm->mutex);
1692
1693         iwl_mvm_report_wakeup_reasons(mvm, vif, &status);
1694
1695         keep = iwl_mvm_setup_connection_keep(mvm, vif, fw_status);
1696
1697         kfree(fw_status);
1698         return keep;
1699
1700 out_free:
1701         kfree(fw_status);
1702 out_unlock:
1703         mutex_unlock(&mvm->mutex);
1704         return false;
1705 }
1706
1707 void iwl_mvm_d0i3_update_keys(struct iwl_mvm *mvm,
1708                               struct ieee80211_vif *vif,
1709                               struct iwl_wowlan_status *status)
1710 {
1711         struct iwl_mvm_d3_gtk_iter_data gtkdata = {
1712                 .mvm = mvm,
1713                 .status = status,
1714         };
1715
1716         /*
1717          * rekey handling requires taking locks that can't be taken now.
1718          * however, d0i3 doesn't offload rekey, so we're fine.
1719          */
1720         if (WARN_ON_ONCE(status->num_of_gtk_rekeys))
1721                 return;
1722
1723         /* find last GTK that we used initially, if any */
1724         gtkdata.find_phase = true;
1725         iwl_mvm_iter_d0i3_ap_keys(mvm, vif, iwl_mvm_d3_update_keys, &gtkdata);
1726
1727         gtkdata.find_phase = false;
1728         iwl_mvm_iter_d0i3_ap_keys(mvm, vif, iwl_mvm_d3_update_keys, &gtkdata);
1729 }
1730
1731 struct iwl_mvm_nd_query_results {
1732         u32 matched_profiles;
1733         struct iwl_scan_offload_profile_match matches[IWL_SCAN_MAX_PROFILES];
1734 };
1735
1736 static int
1737 iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm,
1738                                 struct iwl_mvm_nd_query_results *results)
1739 {
1740         struct iwl_scan_offload_profiles_query *query;
1741         struct iwl_host_cmd cmd = {
1742                 .id = SCAN_OFFLOAD_PROFILES_QUERY_CMD,
1743                 .flags = CMD_WANT_SKB,
1744         };
1745         int ret, len;
1746
1747         ret = iwl_mvm_send_cmd(mvm, &cmd);
1748         if (ret) {
1749                 IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret);
1750                 return ret;
1751         }
1752
1753         len = iwl_rx_packet_payload_len(cmd.resp_pkt);
1754         if (len < sizeof(*query)) {
1755                 IWL_ERR(mvm, "Invalid scan offload profiles query response!\n");
1756                 ret = -EIO;
1757                 goto out_free_resp;
1758         }
1759
1760         query = (void *)cmd.resp_pkt->data;
1761
1762         results->matched_profiles = le32_to_cpu(query->matched_profiles);
1763         memcpy(results->matches, query->matches, sizeof(results->matches));
1764
1765 #ifdef CONFIG_IWLWIFI_DEBUGFS
1766         mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done);
1767 #endif
1768
1769 out_free_resp:
1770         iwl_free_resp(&cmd);
1771         return ret;
1772 }
1773
1774 static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm,
1775                                             struct ieee80211_vif *vif)
1776 {
1777         struct cfg80211_wowlan_nd_info *net_detect = NULL;
1778         struct cfg80211_wowlan_wakeup wakeup = {
1779                 .pattern_idx = -1,
1780         };
1781         struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
1782         struct iwl_mvm_nd_query_results query;
1783         struct iwl_wowlan_status *fw_status;
1784         unsigned long matched_profiles;
1785         u32 reasons = 0;
1786         int i, j, n_matches, ret;
1787
1788         fw_status = iwl_mvm_get_wakeup_status(mvm);
1789         if (!IS_ERR_OR_NULL(fw_status)) {
1790                 reasons = le32_to_cpu(fw_status->wakeup_reasons);
1791                 kfree(fw_status);
1792         }
1793
1794         if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
1795                 wakeup.rfkill_release = true;
1796
1797         if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS)
1798                 goto out;
1799
1800         ret = iwl_mvm_netdetect_query_results(mvm, &query);
1801         if (ret || !query.matched_profiles) {
1802                 wakeup_report = NULL;
1803                 goto out;
1804         }
1805
1806         matched_profiles = query.matched_profiles;
1807         if (mvm->n_nd_match_sets) {
1808                 n_matches = hweight_long(matched_profiles);
1809         } else {
1810                 IWL_ERR(mvm, "no net detect match information available\n");
1811                 n_matches = 0;
1812         }
1813
1814         net_detect = kzalloc(struct_size(net_detect, matches, n_matches),
1815                              GFP_KERNEL);
1816         if (!net_detect || !n_matches)
1817                 goto out_report_nd;
1818
1819         for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) {
1820                 struct iwl_scan_offload_profile_match *fw_match;
1821                 struct cfg80211_wowlan_nd_match *match;
1822                 int idx, n_channels = 0;
1823
1824                 fw_match = &query.matches[i];
1825
1826                 for (j = 0; j < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; j++)
1827                         n_channels += hweight8(fw_match->matching_channels[j]);
1828
1829                 match = kzalloc(struct_size(match, channels, n_channels),
1830                                 GFP_KERNEL);
1831                 if (!match)
1832                         goto out_report_nd;
1833
1834                 net_detect->matches[net_detect->n_matches++] = match;
1835
1836                 /* We inverted the order of the SSIDs in the scan
1837                  * request, so invert the index here.
1838                  */
1839                 idx = mvm->n_nd_match_sets - i - 1;
1840                 match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len;
1841                 memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid,
1842                        match->ssid.ssid_len);
1843
1844                 if (mvm->n_nd_channels < n_channels)
1845                         continue;
1846
1847                 for (j = 0; j < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; j++)
1848                         if (fw_match->matching_channels[j / 8] & (BIT(j % 8)))
1849                                 match->channels[match->n_channels++] =
1850                                         mvm->nd_channels[j]->center_freq;
1851         }
1852
1853 out_report_nd:
1854         wakeup.net_detect = net_detect;
1855 out:
1856         iwl_mvm_free_nd(mvm);
1857
1858         mutex_unlock(&mvm->mutex);
1859         ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
1860
1861         if (net_detect) {
1862                 for (i = 0; i < net_detect->n_matches; i++)
1863                         kfree(net_detect->matches[i]);
1864                 kfree(net_detect);
1865         }
1866 }
1867
1868 static void iwl_mvm_read_d3_sram(struct iwl_mvm *mvm)
1869 {
1870 #ifdef CONFIG_IWLWIFI_DEBUGFS
1871         const struct fw_img *img = &mvm->fw->img[IWL_UCODE_WOWLAN];
1872         u32 len = img->sec[IWL_UCODE_SECTION_DATA].len;
1873         u32 offs = img->sec[IWL_UCODE_SECTION_DATA].offset;
1874
1875         if (!mvm->store_d3_resume_sram)
1876                 return;
1877
1878         if (!mvm->d3_resume_sram) {
1879                 mvm->d3_resume_sram = kzalloc(len, GFP_KERNEL);
1880                 if (!mvm->d3_resume_sram)
1881                         return;
1882         }
1883
1884         iwl_trans_read_mem_bytes(mvm->trans, offs, mvm->d3_resume_sram, len);
1885 #endif
1886 }
1887
1888 static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac,
1889                                        struct ieee80211_vif *vif)
1890 {
1891         /* skip the one we keep connection on */
1892         if (data == vif)
1893                 return;
1894
1895         if (vif->type == NL80211_IFTYPE_STATION)
1896                 ieee80211_resume_disconnect(vif);
1897 }
1898
1899 static int iwl_mvm_check_rt_status(struct iwl_mvm *mvm,
1900                                    struct ieee80211_vif *vif)
1901 {
1902         u32 base = mvm->error_event_table[0];
1903         struct error_table_start {
1904                 /* cf. struct iwl_error_event_table */
1905                 u32 valid;
1906                 u32 error_id;
1907         } err_info;
1908
1909         iwl_trans_read_mem_bytes(mvm->trans, base,
1910                                  &err_info, sizeof(err_info));
1911
1912         if (err_info.valid &&
1913             err_info.error_id == RF_KILL_INDICATOR_FOR_WOWLAN) {
1914                 struct cfg80211_wowlan_wakeup wakeup = {
1915                         .rfkill_release = true,
1916                 };
1917                 ieee80211_report_wowlan_wakeup(vif, &wakeup, GFP_KERNEL);
1918         }
1919         return err_info.valid;
1920 }
1921
1922 static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test)
1923 {
1924         struct ieee80211_vif *vif = NULL;
1925         int ret = 1;
1926         enum iwl_d3_status d3_status;
1927         bool keep = false;
1928         bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1929                                          IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1930         bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa,
1931                                       IWL_UCODE_TLV_CAPA_D0I3_END_FIRST);
1932
1933         mutex_lock(&mvm->mutex);
1934
1935         /* get the BSS vif pointer again */
1936         vif = iwl_mvm_get_bss_vif(mvm);
1937         if (IS_ERR_OR_NULL(vif))
1938                 goto err;
1939
1940         ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, !unified_image);
1941         if (ret)
1942                 goto err;
1943
1944         if (d3_status != IWL_D3_STATUS_ALIVE) {
1945                 IWL_INFO(mvm, "Device was reset during suspend\n");
1946                 goto err;
1947         }
1948
1949         iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
1950         /* query SRAM first in case we want event logging */
1951         iwl_mvm_read_d3_sram(mvm);
1952
1953         if (iwl_mvm_check_rt_status(mvm, vif)) {
1954                 set_bit(STATUS_FW_ERROR, &mvm->trans->status);
1955                 iwl_mvm_dump_nic_error_log(mvm);
1956                 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert,
1957                                         false, 0);
1958                 ret = 1;
1959                 goto err;
1960         }
1961
1962         if (d0i3_first) {
1963                 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL);
1964                 if (ret < 0) {
1965                         IWL_ERR(mvm, "Failed to send D0I3_END_CMD first (%d)\n",
1966                                 ret);
1967                         goto err;
1968                 }
1969         }
1970
1971         /*
1972          * Query the current location and source from the D3 firmware so we
1973          * can play it back when we re-intiailize the D0 firmware
1974          */
1975         iwl_mvm_update_changed_regdom(mvm);
1976
1977         if (!unified_image)
1978                 /*  Re-configure default SAR profile */
1979                 iwl_mvm_sar_select_profile(mvm, 1, 1);
1980
1981         if (mvm->net_detect) {
1982                 /* If this is a non-unified image, we restart the FW,
1983                  * so no need to stop the netdetect scan.  If that
1984                  * fails, continue and try to get the wake-up reasons,
1985                  * but trigger a HW restart by keeping a failure code
1986                  * in ret.
1987                  */
1988                 if (unified_image)
1989                         ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT,
1990                                                 false);
1991
1992                 iwl_mvm_query_netdetect_reasons(mvm, vif);
1993                 /* has unlocked the mutex, so skip that */
1994                 goto out;
1995         } else {
1996                 keep = iwl_mvm_query_wakeup_reasons(mvm, vif);
1997 #ifdef CONFIG_IWLWIFI_DEBUGFS
1998                 if (keep)
1999                         mvm->keep_vif = vif;
2000 #endif
2001                 /* has unlocked the mutex, so skip that */
2002                 goto out_iterate;
2003         }
2004
2005 err:
2006         iwl_mvm_free_nd(mvm);
2007         mutex_unlock(&mvm->mutex);
2008
2009 out_iterate:
2010         if (!test)
2011                 ieee80211_iterate_active_interfaces_rtnl(mvm->hw,
2012                         IEEE80211_IFACE_ITER_NORMAL,
2013                         iwl_mvm_d3_disconnect_iter, keep ? vif : NULL);
2014
2015 out:
2016         /* no need to reset the device in unified images, if successful */
2017         if (unified_image && !ret) {
2018                 /* nothing else to do if we already sent D0I3_END_CMD */
2019                 if (d0i3_first)
2020                         return 0;
2021
2022                 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL);
2023                 if (!ret)
2024                         return 0;
2025         }
2026
2027         /*
2028          * Reconfigure the device in one of the following cases:
2029          * 1. We are not using a unified image
2030          * 2. We are using a unified image but had an error while exiting D3
2031          */
2032         set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
2033         set_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status);
2034         /*
2035          * When switching images we return 1, which causes mac80211
2036          * to do a reconfig with IEEE80211_RECONFIG_TYPE_RESTART.
2037          * This type of reconfig calls iwl_mvm_restart_complete(),
2038          * where we unref the IWL_MVM_REF_UCODE_DOWN, so we need
2039          * to take the reference here.
2040          */
2041         iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
2042
2043         return 1;
2044 }
2045
2046 static int iwl_mvm_resume_d3(struct iwl_mvm *mvm)
2047 {
2048         iwl_trans_resume(mvm->trans);
2049
2050         return __iwl_mvm_resume(mvm, false);
2051 }
2052
2053 static int iwl_mvm_resume_d0i3(struct iwl_mvm *mvm)
2054 {
2055         bool exit_now;
2056         enum iwl_d3_status d3_status;
2057         struct iwl_trans *trans = mvm->trans;
2058
2059         iwl_trans_d3_resume(trans, &d3_status, false, false);
2060
2061         /*
2062          * make sure to clear D0I3_DEFER_WAKEUP before
2063          * calling iwl_trans_resume(), which might wait
2064          * for d0i3 exit completion.
2065          */
2066         mutex_lock(&mvm->d0i3_suspend_mutex);
2067         __clear_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags);
2068         exit_now = __test_and_clear_bit(D0I3_PENDING_WAKEUP,
2069                                         &mvm->d0i3_suspend_flags);
2070         mutex_unlock(&mvm->d0i3_suspend_mutex);
2071         if (exit_now) {
2072                 IWL_DEBUG_RPM(mvm, "Run deferred d0i3 exit\n");
2073                 _iwl_mvm_exit_d0i3(mvm);
2074         }
2075
2076         iwl_trans_resume(trans);
2077
2078         if (iwl_mvm_enter_d0i3_on_suspend(mvm)) {
2079                 int ret = iwl_mvm_exit_d0i3(mvm->hw->priv);
2080
2081                 if (ret)
2082                         return ret;
2083                 /*
2084                  * d0i3 exit will be deferred until reconfig_complete.
2085                  * make sure there we are out of d0i3.
2086                  */
2087         }
2088         return 0;
2089 }
2090
2091 int iwl_mvm_resume(struct ieee80211_hw *hw)
2092 {
2093         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2094         int ret;
2095
2096         if (mvm->trans->system_pm_mode == IWL_PLAT_PM_MODE_D0I3)
2097                 ret = iwl_mvm_resume_d0i3(mvm);
2098         else
2099                 ret = iwl_mvm_resume_d3(mvm);
2100
2101         mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
2102
2103         iwl_mvm_resume_tcm(mvm);
2104
2105         iwl_fw_runtime_resume(&mvm->fwrt);
2106
2107         return ret;
2108 }
2109
2110 void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled)
2111 {
2112         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2113
2114         device_set_wakeup_enable(mvm->trans->dev, enabled);
2115 }
2116
2117 #ifdef CONFIG_IWLWIFI_DEBUGFS
2118 static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file)
2119 {
2120         struct iwl_mvm *mvm = inode->i_private;
2121         int err;
2122
2123         if (mvm->d3_test_active)
2124                 return -EBUSY;
2125
2126         file->private_data = inode->i_private;
2127
2128         ieee80211_stop_queues(mvm->hw);
2129         synchronize_net();
2130
2131         mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_D3;
2132
2133         iwl_mvm_pause_tcm(mvm, true);
2134
2135         iwl_fw_runtime_suspend(&mvm->fwrt);
2136
2137         /* start pseudo D3 */
2138         rtnl_lock();
2139         err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true);
2140         rtnl_unlock();
2141         if (err > 0)
2142                 err = -EINVAL;
2143         if (err) {
2144                 ieee80211_wake_queues(mvm->hw);
2145                 return err;
2146         }
2147         mvm->d3_test_active = true;
2148         mvm->keep_vif = NULL;
2149         return 0;
2150 }
2151
2152 static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf,
2153                                     size_t count, loff_t *ppos)
2154 {
2155         struct iwl_mvm *mvm = file->private_data;
2156         u32 pme_asserted;
2157
2158         while (true) {
2159                 /* read pme_ptr if available */
2160                 if (mvm->d3_test_pme_ptr) {
2161                         pme_asserted = iwl_trans_read_mem32(mvm->trans,
2162                                                 mvm->d3_test_pme_ptr);
2163                         if (pme_asserted)
2164                                 break;
2165                 }
2166
2167                 if (msleep_interruptible(100))
2168                         break;
2169         }
2170
2171         return 0;
2172 }
2173
2174 static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac,
2175                                               struct ieee80211_vif *vif)
2176 {
2177         /* skip the one we keep connection on */
2178         if (_data == vif)
2179                 return;
2180
2181         if (vif->type == NL80211_IFTYPE_STATION)
2182                 ieee80211_connection_loss(vif);
2183 }
2184
2185 static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file)
2186 {
2187         struct iwl_mvm *mvm = inode->i_private;
2188         bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
2189                                          IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2190
2191         mvm->d3_test_active = false;
2192
2193         iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
2194
2195         rtnl_lock();
2196         __iwl_mvm_resume(mvm, true);
2197         rtnl_unlock();
2198
2199         iwl_mvm_resume_tcm(mvm);
2200
2201         iwl_fw_runtime_resume(&mvm->fwrt);
2202
2203         mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
2204
2205         iwl_abort_notification_waits(&mvm->notif_wait);
2206         if (!unified_image) {
2207                 int remaining_time = 10;
2208
2209                 ieee80211_restart_hw(mvm->hw);
2210
2211                 /* wait for restart and disconnect all interfaces */
2212                 while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2213                        remaining_time > 0) {
2214                         remaining_time--;
2215                         msleep(1000);
2216                 }
2217
2218                 if (remaining_time == 0)
2219                         IWL_ERR(mvm, "Timed out waiting for HW restart!\n");
2220         }
2221
2222         ieee80211_iterate_active_interfaces_atomic(
2223                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
2224                 iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif);
2225
2226         ieee80211_wake_queues(mvm->hw);
2227
2228         return 0;
2229 }
2230
2231 const struct file_operations iwl_dbgfs_d3_test_ops = {
2232         .llseek = no_llseek,
2233         .open = iwl_mvm_d3_test_open,
2234         .read = iwl_mvm_d3_test_read,
2235         .release = iwl_mvm_d3_test_release,
2236 };
2237 #endif