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

   1 /******************************************************************************
   2  *
   3  * This file is provided under a dual BSD/GPLv2 license.  When using or
   4  * redistributing this file, you may do so under either license.
   5  *
   6  * GPL LICENSE SUMMARY
   7  *
   8  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
   9  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  10  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
  11  * Copyright(c) 2018 - 2019 Intel Corporation
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of version 2 of the GNU General Public License as
  15  * published by the Free Software Foundation.
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  30  *
  31  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  32  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  33  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
  34  * Copyright(c) 2018 - 2019 Intel Corporation
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  45  *    the documentation and/or other materials provided with the
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  49  *    from this software without specific prior written permission.
  50  *
  51  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  52  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  53  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  54  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  55  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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  60  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  61  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  62  *
  63  *****************************************************************************/
  64
  65 #include <linux/etherdevice.h>
  66 #include <linux/ip.h>
  67 #include <linux/fs.h>
  68 #include <net/cfg80211.h>
  69 #include <net/ipv6.h>
  70 #include <net/tcp.h>
  71 #include <net/addrconf.h>
  72 #include "iwl-modparams.h"
  73 #include "fw-api.h"
  74 #include "mvm.h"
  75
  76 void iwl_mvm_set_rekey_data(struct ieee80211_hw *hw,
  77                             struct ieee80211_vif *vif,
  78                             struct cfg80211_gtk_rekey_data *data)
  79 {
  80         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
  81         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
  82
  83         if (iwlwifi_mod_params.swcrypto)
  84                 return;
  85
  86         mutex_lock(&mvm->mutex);
  87
  88         memcpy(mvmvif->rekey_data.kek, data->kek, NL80211_KEK_LEN);
  89         memcpy(mvmvif->rekey_data.kck, data->kck, NL80211_KCK_LEN);
  90         mvmvif->rekey_data.replay_ctr =
  91                 cpu_to_le64(be64_to_cpup((__be64 *)data->replay_ctr));
  92         mvmvif->rekey_data.valid = true;
  93
  94         mutex_unlock(&mvm->mutex);
  95 }
  96
  97 #if IS_ENABLED(CONFIG_IPV6)
  98 void iwl_mvm_ipv6_addr_change(struct ieee80211_hw *hw,
  99                               struct ieee80211_vif *vif,
 100                               struct inet6_dev *idev)
 101 {
 102         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 103         struct inet6_ifaddr *ifa;
 104         int idx = 0;
 105
 106         memset(mvmvif->tentative_addrs, 0, sizeof(mvmvif->tentative_addrs));
 107
 108         read_lock_bh(&idev->lock);
 109         list_for_each_entry(ifa, &idev->addr_list, if_list) {
 110                 mvmvif->target_ipv6_addrs[idx] = ifa->addr;
 111                 if (ifa->flags & IFA_F_TENTATIVE)
 112                         __set_bit(idx, mvmvif->tentative_addrs);
 113                 idx++;
 114                 if (idx >= IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_MAX)
 115                         break;
 116         }
 117         read_unlock_bh(&idev->lock);
 118
 119         mvmvif->num_target_ipv6_addrs = idx;
 120 }
 121 #endif
 122
 123 void iwl_mvm_set_default_unicast_key(struct ieee80211_hw *hw,
 124                                      struct ieee80211_vif *vif, int idx)
 125 {
 126         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 127
 128         mvmvif->tx_key_idx = idx;
 129 }
 130
 131 static void iwl_mvm_convert_p1k(u16 *p1k, __le16 *out)
 132 {
 133         int i;
 134
 135         for (i = 0; i < IWL_P1K_SIZE; i++)
 136                 out[i] = cpu_to_le16(p1k[i]);
 137 }
 138
 139 static const u8 *iwl_mvm_find_max_pn(struct ieee80211_key_conf *key,
 140                                      struct iwl_mvm_key_pn *ptk_pn,
 141                                      struct ieee80211_key_seq *seq,
 142                                      int tid, int queues)
 143 {
 144         const u8 *ret = seq->ccmp.pn;
 145         int i;
 146
 147         /* get the PN from mac80211, used on the default queue */
 148         ieee80211_get_key_rx_seq(key, tid, seq);
 149
 150         /* and use the internal data for the other queues */
 151         for (i = 1; i < queues; i++) {
 152                 const u8 *tmp = ptk_pn->q[i].pn[tid];
 153
 154                 if (memcmp(ret, tmp, IEEE80211_CCMP_PN_LEN) <= 0)
 155                         ret = tmp;
 156         }
 157
 158         return ret;
 159 }
 160
 161 struct wowlan_key_data {
 162         struct iwl_wowlan_rsc_tsc_params_cmd *rsc_tsc;
 163         struct iwl_wowlan_tkip_params_cmd *tkip;
 164         bool error, use_rsc_tsc, use_tkip, configure_keys;
 165         int wep_key_idx;
 166 };
 167
 168 static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw,
 169                                         struct ieee80211_vif *vif,
 170                                         struct ieee80211_sta *sta,
 171                                         struct ieee80211_key_conf *key,
 172                                         void *_data)
 173 {
 174         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 175         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 176         struct wowlan_key_data *data = _data;
 177         struct aes_sc *aes_sc, *aes_tx_sc = NULL;
 178         struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
 179         struct iwl_p1k_cache *rx_p1ks;
 180         u8 *rx_mic_key;
 181         struct ieee80211_key_seq seq;
 182         u32 cur_rx_iv32 = 0;
 183         u16 p1k[IWL_P1K_SIZE];
 184         int ret, i;
 185
 186         switch (key->cipher) {
 187         case WLAN_CIPHER_SUITE_WEP40:
 188         case WLAN_CIPHER_SUITE_WEP104: { /* hack it for now */
 189                 struct {
 190                         struct iwl_mvm_wep_key_cmd wep_key_cmd;
 191                         struct iwl_mvm_wep_key wep_key;
 192                 } __packed wkc = {
 193                         .wep_key_cmd.mac_id_n_color =
 194                                 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
 195                                                                 mvmvif->color)),
 196                         .wep_key_cmd.num_keys = 1,
 197                         /* firmware sets STA_KEY_FLG_WEP_13BYTES */
 198                         .wep_key_cmd.decryption_type = STA_KEY_FLG_WEP,
 199                         .wep_key.key_index = key->keyidx,
 200                         .wep_key.key_size = key->keylen,
 201                 };
 202
 203                 /*
 204                  * This will fail -- the key functions don't set support
 205                  * pairwise WEP keys. However, that's better than silently
 206                  * failing WoWLAN. Or maybe not?
 207                  */
 208                 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
 209                         break;
 210
 211                 memcpy(&wkc.wep_key.key[3], key->key, key->keylen);
 212                 if (key->keyidx == mvmvif->tx_key_idx) {
 213                         /* TX key must be at offset 0 */
 214                         wkc.wep_key.key_offset = 0;
 215                 } else {
 216                         /* others start at 1 */
 217                         data->wep_key_idx++;
 218                         wkc.wep_key.key_offset = data->wep_key_idx;
 219                 }
 220
 221                 if (data->configure_keys) {
 222                         mutex_lock(&mvm->mutex);
 223                         ret = iwl_mvm_send_cmd_pdu(mvm, WEP_KEY, 0,
 224                                                    sizeof(wkc), &wkc);
 225                         data->error = ret != 0;
 226
 227                         mvm->ptk_ivlen = key->iv_len;
 228                         mvm->ptk_icvlen = key->icv_len;
 229                         mvm->gtk_ivlen = key->iv_len;
 230                         mvm->gtk_icvlen = key->icv_len;
 231                         mutex_unlock(&mvm->mutex);
 232                 }
 233
 234                 /* don't upload key again */
 235                 return;
 236         }
 237         default:
 238                 data->error = true;
 239                 return;
 240         case WLAN_CIPHER_SUITE_AES_CMAC:
 241                 /*
 242                  * Ignore CMAC keys -- the WoWLAN firmware doesn't support them
 243                  * but we also shouldn't abort suspend due to that. It does have
 244                  * support for the IGTK key renewal, but doesn't really use the
 245                  * IGTK for anything. This means we could spuriously wake up or
 246                  * be deauthenticated, but that was considered acceptable.
 247                  */
 248                 return;
 249         case WLAN_CIPHER_SUITE_TKIP:
 250                 if (sta) {
 251                         u64 pn64;
 252
 253                         tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
 254                         tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
 255
 256                         rx_p1ks = data->tkip->rx_uni;
 257
 258                         pn64 = atomic64_read(&key->tx_pn);
 259                         tkip_tx_sc->iv16 = cpu_to_le16(TKIP_PN_TO_IV16(pn64));
 260                         tkip_tx_sc->iv32 = cpu_to_le32(TKIP_PN_TO_IV32(pn64));
 261
 262                         ieee80211_get_tkip_p1k_iv(key, TKIP_PN_TO_IV32(pn64),
 263                                                   p1k);
 264                         iwl_mvm_convert_p1k(p1k, data->tkip->tx.p1k);
 265
 266                         memcpy(data->tkip->mic_keys.tx,
 267                                &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
 268                                IWL_MIC_KEY_SIZE);
 269
 270                         rx_mic_key = data->tkip->mic_keys.rx_unicast;
 271                 } else {
 272                         tkip_sc =
 273                                 data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc;
 274                         rx_p1ks = data->tkip->rx_multi;
 275                         rx_mic_key = data->tkip->mic_keys.rx_mcast;
 276                 }
 277
 278                 /*
 279                  * For non-QoS this relies on the fact that both the uCode and
 280                  * mac80211 use TID 0 (as they need to to avoid replay attacks)
 281                  * for checking the IV in the frames.
 282                  */
 283                 for (i = 0; i < IWL_NUM_RSC; i++) {
 284                         ieee80211_get_key_rx_seq(key, i, &seq);
 285                         tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
 286                         tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
 287                         /* wrapping isn't allowed, AP must rekey */
 288                         if (seq.tkip.iv32 > cur_rx_iv32)
 289                                 cur_rx_iv32 = seq.tkip.iv32;
 290                 }
 291
 292                 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
 293                                           cur_rx_iv32, p1k);
 294                 iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k);
 295                 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
 296                                           cur_rx_iv32 + 1, p1k);
 297                 iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k);
 298
 299                 memcpy(rx_mic_key,
 300                        &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
 301                        IWL_MIC_KEY_SIZE);
 302
 303                 data->use_tkip = true;
 304                 data->use_rsc_tsc = true;
 305                 break;
 306         case WLAN_CIPHER_SUITE_CCMP:
 307                 if (sta) {
 308                         u64 pn64;
 309
 310                         aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
 311                         aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc;
 312
 313                         pn64 = atomic64_read(&key->tx_pn);
 314                         aes_tx_sc->pn = cpu_to_le64(pn64);
 315                 } else {
 316                         aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
 317                 }
 318
 319                 /*
 320                  * For non-QoS this relies on the fact that both the uCode and
 321                  * mac80211/our RX code use TID 0 for checking the PN.
 322                  */
 323                 if (sta && iwl_mvm_has_new_rx_api(mvm)) {
 324                         struct iwl_mvm_sta *mvmsta;
 325                         struct iwl_mvm_key_pn *ptk_pn;
 326                         const u8 *pn;
 327
 328                         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 329                         ptk_pn = rcu_dereference_protected(
 330                                                 mvmsta->ptk_pn[key->keyidx],
 331                                                 lockdep_is_held(&mvm->mutex));
 332                         if (WARN_ON(!ptk_pn))
 333                                 break;
 334
 335                         for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
 336                                 pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i,
 337                                                 mvm->trans->num_rx_queues);
 338                                 aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
 339                                                            ((u64)pn[4] << 8) |
 340                                                            ((u64)pn[3] << 16) |
 341                                                            ((u64)pn[2] << 24) |
 342                                                            ((u64)pn[1] << 32) |
 343                                                            ((u64)pn[0] << 40));
 344                         }
 345                 } else {
 346                         for (i = 0; i < IWL_NUM_RSC; i++) {
 347                                 u8 *pn = seq.ccmp.pn;
 348
 349                                 ieee80211_get_key_rx_seq(key, i, &seq);
 350                                 aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
 351                                                            ((u64)pn[4] << 8) |
 352                                                            ((u64)pn[3] << 16) |
 353                                                            ((u64)pn[2] << 24) |
 354                                                            ((u64)pn[1] << 32) |
 355                                                            ((u64)pn[0] << 40));
 356                         }
 357                 }
 358                 data->use_rsc_tsc = true;
 359                 break;
 360         }
 361
 362         if (data->configure_keys) {
 363                 mutex_lock(&mvm->mutex);
 364                 /*
 365                  * The D3 firmware hardcodes the key offset 0 as the key it
 366                  * uses to transmit packets to the AP, i.e. the PTK.
 367                  */
 368                 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
 369                         mvm->ptk_ivlen = key->iv_len;
 370                         mvm->ptk_icvlen = key->icv_len;
 371                         ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 0);
 372                 } else {
 373                         /*
 374                          * firmware only supports TSC/RSC for a single key,
 375                          * so if there are multiple keep overwriting them
 376                          * with new ones -- this relies on mac80211 doing
 377                          * list_add_tail().
 378                          */
 379                         mvm->gtk_ivlen = key->iv_len;
 380                         mvm->gtk_icvlen = key->icv_len;
 381                         ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 1);
 382                 }
 383                 mutex_unlock(&mvm->mutex);
 384                 data->error = ret != 0;
 385         }
 386 }
 387
 388 static int iwl_mvm_send_patterns_v1(struct iwl_mvm *mvm,
 389                                     struct cfg80211_wowlan *wowlan)
 390 {
 391         struct iwl_wowlan_patterns_cmd_v1 *pattern_cmd;
 392         struct iwl_host_cmd cmd = {
 393                 .id = WOWLAN_PATTERNS,
 394                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
 395         };
 396         int i, err;
 397
 398         if (!wowlan->n_patterns)
 399                 return 0;
 400
 401         cmd.len[0] = struct_size(pattern_cmd, patterns, wowlan->n_patterns);
 402
 403         pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
 404         if (!pattern_cmd)
 405                 return -ENOMEM;
 406
 407         pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
 408
 409         for (i = 0; i < wowlan->n_patterns; i++) {
 410                 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
 411
 412                 memcpy(&pattern_cmd->patterns[i].mask,
 413                        wowlan->patterns[i].mask, mask_len);
 414                 memcpy(&pattern_cmd->patterns[i].pattern,
 415                        wowlan->patterns[i].pattern,
 416                        wowlan->patterns[i].pattern_len);
 417                 pattern_cmd->patterns[i].mask_size = mask_len;
 418                 pattern_cmd->patterns[i].pattern_size =
 419                         wowlan->patterns[i].pattern_len;
 420         }
 421
 422         cmd.data[0] = pattern_cmd;
 423         err = iwl_mvm_send_cmd(mvm, &cmd);
 424         kfree(pattern_cmd);
 425         return err;
 426 }
 427
 428 static int iwl_mvm_send_patterns(struct iwl_mvm *mvm,
 429                                  struct cfg80211_wowlan *wowlan)
 430 {
 431         struct iwl_wowlan_patterns_cmd *pattern_cmd;
 432         struct iwl_host_cmd cmd = {
 433                 .id = WOWLAN_PATTERNS,
 434                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
 435         };
 436         int i, err;
 437
 438         if (!wowlan->n_patterns)
 439                 return 0;
 440
 441         cmd.len[0] = sizeof(*pattern_cmd) +
 442                 wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern_v2);
 443
 444         pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
 445         if (!pattern_cmd)
 446                 return -ENOMEM;
 447
 448         pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
 449
 450         for (i = 0; i < wowlan->n_patterns; i++) {
 451                 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
 452
 453                 pattern_cmd->patterns[i].pattern_type =
 454                         WOWLAN_PATTERN_TYPE_BITMASK;
 455
 456                 memcpy(&pattern_cmd->patterns[i].u.bitmask.mask,
 457                        wowlan->patterns[i].mask, mask_len);
 458                 memcpy(&pattern_cmd->patterns[i].u.bitmask.pattern,
 459                        wowlan->patterns[i].pattern,
 460                        wowlan->patterns[i].pattern_len);
 461                 pattern_cmd->patterns[i].u.bitmask.mask_size = mask_len;
 462                 pattern_cmd->patterns[i].u.bitmask.pattern_size =
 463                         wowlan->patterns[i].pattern_len;
 464         }
 465
 466         cmd.data[0] = pattern_cmd;
 467         err = iwl_mvm_send_cmd(mvm, &cmd);
 468         kfree(pattern_cmd);
 469         return err;
 470 }
 471
 472 static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 473                                 struct ieee80211_sta *ap_sta)
 474 {
 475         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 476         struct ieee80211_chanctx_conf *ctx;
 477         u8 chains_static, chains_dynamic;
 478         struct cfg80211_chan_def chandef;
 479         int ret, i;
 480         struct iwl_binding_cmd_v1 binding_cmd = {};
 481         struct iwl_time_quota_cmd quota_cmd = {};
 482         struct iwl_time_quota_data *quota;
 483         u32 status;
 484
 485         if (WARN_ON_ONCE(iwl_mvm_is_cdb_supported(mvm)))
 486                 return -EINVAL;
 487
 488         /* add back the PHY */
 489         if (WARN_ON(!mvmvif->phy_ctxt))
 490                 return -EINVAL;
 491
 492         rcu_read_lock();
 493         ctx = rcu_dereference(vif->chanctx_conf);
 494         if (WARN_ON(!ctx)) {
 495                 rcu_read_unlock();
 496                 return -EINVAL;
 497         }
 498         chandef = ctx->def;
 499         chains_static = ctx->rx_chains_static;
 500         chains_dynamic = ctx->rx_chains_dynamic;
 501         rcu_read_unlock();
 502
 503         ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt, &chandef,
 504                                    chains_static, chains_dynamic);
 505         if (ret)
 506                 return ret;
 507
 508         /* add back the MAC */
 509         mvmvif->uploaded = false;
 510
 511         if (WARN_ON(!vif->bss_conf.assoc))
 512                 return -EINVAL;
 513
 514         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
 515         if (ret)
 516                 return ret;
 517
 518         /* add back binding - XXX refactor? */
 519         binding_cmd.id_and_color =
 520                 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
 521                                                 mvmvif->phy_ctxt->color));
 522         binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD);
 523         binding_cmd.phy =
 524                 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
 525                                                 mvmvif->phy_ctxt->color));
 526         binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
 527                                                               mvmvif->color));
 528         for (i = 1; i < MAX_MACS_IN_BINDING; i++)
 529                 binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID);
 530
 531         status = 0;
 532         ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD,
 533                                           IWL_BINDING_CMD_SIZE_V1, &binding_cmd,
 534                                           &status);
 535         if (ret) {
 536                 IWL_ERR(mvm, "Failed to add binding: %d\n", ret);
 537                 return ret;
 538         }
 539
 540         if (status) {
 541                 IWL_ERR(mvm, "Binding command failed: %u\n", status);
 542                 return -EIO;
 543         }
 544
 545         ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false, 0);
 546         if (ret)
 547                 return ret;
 548         rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], ap_sta);
 549
 550         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
 551         if (ret)
 552                 return ret;
 553
 554         /* and some quota */
 555         quota = iwl_mvm_quota_cmd_get_quota(mvm, &quota_cmd, 0);
 556         quota->id_and_color =
 557                 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
 558                                                 mvmvif->phy_ctxt->color));
 559         quota->quota = cpu_to_le32(IWL_MVM_MAX_QUOTA);
 560         quota->max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA);
 561
 562         for (i = 1; i < MAX_BINDINGS; i++) {
 563                 quota = iwl_mvm_quota_cmd_get_quota(mvm, &quota_cmd, i);
 564                 quota->id_and_color = cpu_to_le32(FW_CTXT_INVALID);
 565         }
 566
 567         ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0,
 568                                    iwl_mvm_quota_cmd_size(mvm), &quota_cmd);
 569         if (ret)
 570                 IWL_ERR(mvm, "Failed to send quota: %d\n", ret);
 571
 572         if (iwl_mvm_is_lar_supported(mvm) && iwl_mvm_init_fw_regd(mvm))
 573                 IWL_ERR(mvm, "Failed to initialize D3 LAR information\n");
 574
 575         return 0;
 576 }
 577
 578 static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm,
 579                                        struct ieee80211_vif *vif)
 580 {
 581         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 582         struct iwl_nonqos_seq_query_cmd query_cmd = {
 583                 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET),
 584                 .mac_id_n_color =
 585                         cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
 586                                                         mvmvif->color)),
 587         };
 588         struct iwl_host_cmd cmd = {
 589                 .id = NON_QOS_TX_COUNTER_CMD,
 590                 .flags = CMD_WANT_SKB,
 591         };
 592         int err;
 593         u32 size;
 594
 595         cmd.data[0] = &query_cmd;
 596         cmd.len[0] = sizeof(query_cmd);
 597
 598         err = iwl_mvm_send_cmd(mvm, &cmd);
 599         if (err)
 600                 return err;
 601
 602         size = iwl_rx_packet_payload_len(cmd.resp_pkt);
 603         if (size < sizeof(__le16)) {
 604                 err = -EINVAL;
 605         } else {
 606                 err = le16_to_cpup((__le16 *)cmd.resp_pkt->data);
 607                 /* firmware returns next, not last-used seqno */
 608                 err = (u16) (err - 0x10);
 609         }
 610
 611         iwl_free_resp(&cmd);
 612         return err;
 613 }
 614
 615 void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
 616 {
 617         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 618         struct iwl_nonqos_seq_query_cmd query_cmd = {
 619                 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET),
 620                 .mac_id_n_color =
 621                         cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
 622                                                         mvmvif->color)),
 623                 .value = cpu_to_le16(mvmvif->seqno),
 624         };
 625
 626         /* return if called during restart, not resume from D3 */
 627         if (!mvmvif->seqno_valid)
 628                 return;
 629
 630         mvmvif->seqno_valid = false;
 631
 632         if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0,
 633                                  sizeof(query_cmd), &query_cmd))
 634                 IWL_ERR(mvm, "failed to set non-QoS seqno\n");
 635 }
 636
 637 static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm)
 638 {
 639         iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
 640
 641         iwl_mvm_stop_device(mvm);
 642         /*
 643          * Set the HW restart bit -- this is mostly true as we're
 644          * going to load new firmware and reprogram that, though
 645          * the reprogramming is going to be manual to avoid adding
 646          * all the MACs that aren't support.
 647          * We don't have to clear up everything though because the
 648          * reprogramming is manual. When we resume, we'll actually
 649          * go through a proper restart sequence again to switch
 650          * back to the runtime firmware image.
 651          */
 652         set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
 653
 654         /* the fw is reset, so all the keys are cleared */
 655         memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
 656
 657         mvm->ptk_ivlen = 0;
 658         mvm->ptk_icvlen = 0;
 659         mvm->ptk_ivlen = 0;
 660         mvm->ptk_icvlen = 0;
 661
 662         return iwl_mvm_load_d3_fw(mvm);
 663 }
 664
 665 static int
 666 iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm,
 667                           struct cfg80211_wowlan *wowlan,
 668                           struct iwl_wowlan_config_cmd *wowlan_config_cmd,
 669                           struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
 670                           struct ieee80211_sta *ap_sta)
 671 {
 672         int ret;
 673         struct iwl_mvm_sta *mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
 674
 675         /* TODO: wowlan_config_cmd->wowlan_ba_teardown_tids */
 676
 677         wowlan_config_cmd->is_11n_connection =
 678                                         ap_sta->ht_cap.ht_supported;
 679         wowlan_config_cmd->flags = ENABLE_L3_FILTERING |
 680                 ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING;
 681
 682         /* Query the last used seqno and set it */
 683         ret = iwl_mvm_get_last_nonqos_seq(mvm, vif);
 684         if (ret < 0)
 685                 return ret;
 686
 687         wowlan_config_cmd->non_qos_seq = cpu_to_le16(ret);
 688
 689         iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, wowlan_config_cmd);
 690
 691         if (wowlan->disconnect)
 692                 wowlan_config_cmd->wakeup_filter |=
 693                         cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
 694                                     IWL_WOWLAN_WAKEUP_LINK_CHANGE);
 695         if (wowlan->magic_pkt)
 696                 wowlan_config_cmd->wakeup_filter |=
 697                         cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET);
 698         if (wowlan->gtk_rekey_failure)
 699                 wowlan_config_cmd->wakeup_filter |=
 700                         cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
 701         if (wowlan->eap_identity_req)
 702                 wowlan_config_cmd->wakeup_filter |=
 703                         cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ);
 704         if (wowlan->four_way_handshake)
 705                 wowlan_config_cmd->wakeup_filter |=
 706                         cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
 707         if (wowlan->n_patterns)
 708                 wowlan_config_cmd->wakeup_filter |=
 709                         cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH);
 710
 711         if (wowlan->rfkill_release)
 712                 wowlan_config_cmd->wakeup_filter |=
 713                         cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
 714
 715         if (wowlan->tcp) {
 716                 /*
 717                  * Set the "link change" (really "link lost") flag as well
 718                  * since that implies losing the TCP connection.
 719                  */
 720                 wowlan_config_cmd->wakeup_filter |=
 721                         cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS |
 722                                     IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE |
 723                                     IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET |
 724                                     IWL_WOWLAN_WAKEUP_LINK_CHANGE);
 725         }
 726
 727         if (wowlan->any) {
 728                 wowlan_config_cmd->wakeup_filter |=
 729                         cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
 730                                     IWL_WOWLAN_WAKEUP_LINK_CHANGE |
 731                                     IWL_WOWLAN_WAKEUP_RX_FRAME |
 732                                     IWL_WOWLAN_WAKEUP_BCN_FILTERING);
 733         }
 734
 735         return 0;
 736 }
 737
 738 static int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm,
 739                                             struct ieee80211_vif *vif,
 740                                             u32 cmd_flags)
 741 {
 742         struct iwl_wowlan_kek_kck_material_cmd kek_kck_cmd = {};
 743         struct iwl_wowlan_tkip_params_cmd tkip_cmd = {};
 744         bool unified = fw_has_capa(&mvm->fw->ucode_capa,
 745                                    IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
 746         struct wowlan_key_data key_data = {
 747                 .configure_keys = !unified,
 748                 .use_rsc_tsc = false,
 749                 .tkip = &tkip_cmd,
 750                 .use_tkip = false,
 751         };
 752         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 753         int ret;
 754
 755         key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
 756         if (!key_data.rsc_tsc)
 757                 return -ENOMEM;
 758
 759         /*
 760          * if we have to configure keys, call ieee80211_iter_keys(),
 761          * as we need non-atomic context in order to take the
 762          * required locks.
 763          */
 764         /*
 765          * Note that currently we don't propagate cmd_flags
 766          * to the iterator. In case of key_data.configure_keys,
 767          * all the configured commands are SYNC, and
 768          * iwl_mvm_wowlan_program_keys() will take care of
 769          * locking/unlocking mvm->mutex.
 770          */
 771         ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_program_keys,
 772                             &key_data);
 773
 774         if (key_data.error) {
 775                 ret = -EIO;
 776                 goto out;
 777         }
 778
 779         if (key_data.use_rsc_tsc) {
 780                 ret = iwl_mvm_send_cmd_pdu(mvm,
 781                                            WOWLAN_TSC_RSC_PARAM, cmd_flags,
 782                                            sizeof(*key_data.rsc_tsc),
 783                                            key_data.rsc_tsc);
 784                 if (ret)
 785                         goto out;
 786         }
 787
 788         if (key_data.use_tkip &&
 789             !fw_has_api(&mvm->fw->ucode_capa,
 790                         IWL_UCODE_TLV_API_TKIP_MIC_KEYS)) {
 791                 ret = iwl_mvm_send_cmd_pdu(mvm,
 792                                            WOWLAN_TKIP_PARAM,
 793                                            cmd_flags, sizeof(tkip_cmd),
 794                                            &tkip_cmd);
 795                 if (ret)
 796                         goto out;
 797         }
 798
 799         /* configure rekey data only if offloaded rekey is supported (d3) */
 800         if (mvmvif->rekey_data.valid) {
 801                 memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
 802                 memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck,
 803                        NL80211_KCK_LEN);
 804                 kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
 805                 memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek,
 806                        NL80211_KEK_LEN);
 807                 kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
 808                 kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr;
 809
 810                 ret = iwl_mvm_send_cmd_pdu(mvm,
 811                                            WOWLAN_KEK_KCK_MATERIAL, cmd_flags,
 812                                            sizeof(kek_kck_cmd),
 813                                            &kek_kck_cmd);
 814                 if (ret)
 815                         goto out;
 816         }
 817         ret = 0;
 818 out:
 819         kfree(key_data.rsc_tsc);
 820         return ret;
 821 }
 822
 823 static int
 824 iwl_mvm_wowlan_config(struct iwl_mvm *mvm,
 825                       struct cfg80211_wowlan *wowlan,
 826                       struct iwl_wowlan_config_cmd *wowlan_config_cmd,
 827                       struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
 828                       struct ieee80211_sta *ap_sta)
 829 {
 830         int ret;
 831         bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
 832                                          IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
 833
 834         mvm->offload_tid = wowlan_config_cmd->offloading_tid;
 835
 836         if (!unified_image) {
 837                 ret = iwl_mvm_switch_to_d3(mvm);
 838                 if (ret)
 839                         return ret;
 840
 841                 ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta);
 842                 if (ret)
 843                         return ret;
 844         }
 845
 846         if (!iwlwifi_mod_params.swcrypto) {
 847                 /*
 848                  * This needs to be unlocked due to lock ordering
 849                  * constraints. Since we're in the suspend path
 850                  * that isn't really a problem though.
 851                  */
 852                 mutex_unlock(&mvm->mutex);
 853                 ret = iwl_mvm_wowlan_config_key_params(mvm, vif, CMD_ASYNC);
 854                 mutex_lock(&mvm->mutex);
 855                 if (ret)
 856                         return ret;
 857         }
 858
 859         ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0,
 860                                    sizeof(*wowlan_config_cmd),
 861                                    wowlan_config_cmd);
 862         if (ret)
 863                 return ret;
 864
 865         if (fw_has_api(&mvm->fw->ucode_capa,
 866                        IWL_UCODE_TLV_API_WOWLAN_TCP_SYN_WAKE))
 867                 ret = iwl_mvm_send_patterns(mvm, wowlan);
 868         else
 869                 ret = iwl_mvm_send_patterns_v1(mvm, wowlan);
 870         if (ret)
 871                 return ret;
 872
 873         return iwl_mvm_send_proto_offload(mvm, vif, false, true, 0);
 874 }
 875
 876 static int
 877 iwl_mvm_netdetect_config(struct iwl_mvm *mvm,
 878                          struct cfg80211_wowlan *wowlan,
 879                          struct cfg80211_sched_scan_request *nd_config,
 880                          struct ieee80211_vif *vif)
 881 {
 882         struct iwl_wowlan_config_cmd wowlan_config_cmd = {};
 883         int ret;
 884         bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
 885                                          IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
 886
 887         if (!unified_image) {
 888                 ret = iwl_mvm_switch_to_d3(mvm);
 889                 if (ret)
 890                         return ret;
 891         } else {
 892                 /* In theory, we wouldn't have to stop a running sched
 893                  * scan in order to start another one (for
 894                  * net-detect).  But in practice this doesn't seem to
 895                  * work properly, so stop any running sched_scan now.
 896                  */
 897                 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
 898                 if (ret)
 899                         return ret;
 900         }
 901
 902         /* rfkill release can be either for wowlan or netdetect */
 903         if (wowlan->rfkill_release)
 904                 wowlan_config_cmd.wakeup_filter |=
 905                         cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
 906
 907         wowlan_config_cmd.sta_id = mvm->aux_sta.sta_id;
 908
 909         ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0,
 910                                    sizeof(wowlan_config_cmd),
 911                                    &wowlan_config_cmd);
 912         if (ret)
 913                 return ret;
 914
 915         ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies,
 916                                        IWL_MVM_SCAN_NETDETECT);
 917         if (ret)
 918                 return ret;
 919
 920         if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels))
 921                 return -EBUSY;
 922
 923         /* save the sched scan matchsets... */
 924         if (nd_config->n_match_sets) {
 925                 mvm->nd_match_sets = kmemdup(nd_config->match_sets,
 926                                              sizeof(*nd_config->match_sets) *
 927                                              nd_config->n_match_sets,
 928                                              GFP_KERNEL);
 929                 if (mvm->nd_match_sets)
 930                         mvm->n_nd_match_sets = nd_config->n_match_sets;
 931         }
 932
 933         /* ...and the sched scan channels for later reporting */
 934         mvm->nd_channels = kmemdup(nd_config->channels,
 935                                    sizeof(*nd_config->channels) *
 936                                    nd_config->n_channels,
 937                                    GFP_KERNEL);
 938         if (mvm->nd_channels)
 939                 mvm->n_nd_channels = nd_config->n_channels;
 940
 941         return 0;
 942 }
 943
 944 static void iwl_mvm_free_nd(struct iwl_mvm *mvm)
 945 {
 946         kfree(mvm->nd_match_sets);
 947         mvm->nd_match_sets = NULL;
 948         mvm->n_nd_match_sets = 0;
 949         kfree(mvm->nd_channels);
 950         mvm->nd_channels = NULL;
 951         mvm->n_nd_channels = 0;
 952 }
 953
 954 static int __iwl_mvm_suspend(struct ieee80211_hw *hw,
 955                              struct cfg80211_wowlan *wowlan,
 956                              bool test)
 957 {
 958         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 959         struct ieee80211_vif *vif = NULL;
 960         struct iwl_mvm_vif *mvmvif = NULL;
 961         struct ieee80211_sta *ap_sta = NULL;
 962         struct iwl_d3_manager_config d3_cfg_cmd_data = {
 963                 /*
 964                  * Program the minimum sleep time to 10 seconds, as many
 965                  * platforms have issues processing a wakeup signal while
 966                  * still being in the process of suspending.
 967                  */
 968                 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000),
 969         };
 970         struct iwl_host_cmd d3_cfg_cmd = {
 971                 .id = D3_CONFIG_CMD,
 972                 .flags = CMD_WANT_SKB,
 973                 .data[0] = &d3_cfg_cmd_data,
 974                 .len[0] = sizeof(d3_cfg_cmd_data),
 975         };
 976         int ret;
 977         int len __maybe_unused;
 978         bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
 979                                          IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
 980
 981         if (!wowlan) {
 982                 /*
 983                  * mac80211 shouldn't get here, but for D3 test
 984                  * it doesn't warrant a warning
 985                  */
 986                 WARN_ON(!test);
 987                 return -EINVAL;
 988         }
 989
 990         mutex_lock(&mvm->mutex);
 991
 992         set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
 993
 994         vif = iwl_mvm_get_bss_vif(mvm);
 995         if (IS_ERR_OR_NULL(vif)) {
 996                 ret = 1;
 997                 goto out_noreset;
 998         }
 999
1000         mvmvif = iwl_mvm_vif_from_mac80211(vif);
1001
1002         if (mvmvif->ap_sta_id == IWL_MVM_INVALID_STA) {
1003                 /* if we're not associated, this must be netdetect */
1004                 if (!wowlan->nd_config) {
1005                         ret = 1;
1006                         goto out_noreset;
1007                 }
1008
1009                 ret = iwl_mvm_netdetect_config(
1010                         mvm, wowlan, wowlan->nd_config, vif);
1011                 if (ret)
1012                         goto out;
1013
1014                 mvm->net_detect = true;
1015         } else {
1016                 struct iwl_wowlan_config_cmd wowlan_config_cmd = {};
1017
1018                 wowlan_config_cmd.sta_id = mvmvif->ap_sta_id;
1019
1020                 ap_sta = rcu_dereference_protected(
1021                         mvm->fw_id_to_mac_id[mvmvif->ap_sta_id],
1022                         lockdep_is_held(&mvm->mutex));
1023                 if (IS_ERR_OR_NULL(ap_sta)) {
1024                         ret = -EINVAL;
1025                         goto out_noreset;
1026                 }
1027
1028                 ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1029                                                 vif, mvmvif, ap_sta);
1030                 if (ret)
1031                         goto out_noreset;
1032                 ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1033                                             vif, mvmvif, ap_sta);
1034                 if (ret)
1035                         goto out;
1036
1037                 mvm->net_detect = false;
1038         }
1039
1040         ret = iwl_mvm_power_update_device(mvm);
1041         if (ret)
1042                 goto out;
1043
1044         ret = iwl_mvm_power_update_mac(mvm);
1045         if (ret)
1046                 goto out;
1047
1048 #ifdef CONFIG_IWLWIFI_DEBUGFS
1049         if (mvm->d3_wake_sysassert)
1050                 d3_cfg_cmd_data.wakeup_flags |=
1051                         cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR);
1052 #endif
1053
1054         /*
1055          * Prior to 9000 device family the driver needs to stop the dbg
1056          * recording before entering D3. In later devices the FW stops the
1057          * recording automatically.
1058          */
1059         if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_9000)
1060                 iwl_fw_dbg_stop_restart_recording(&mvm->fwrt, NULL, true);
1061
1062         /* must be last -- this switches firmware state */
1063         ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd);
1064         if (ret)
1065                 goto out;
1066 #ifdef CONFIG_IWLWIFI_DEBUGFS
1067         len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt);
1068         if (len >= sizeof(u32)) {
1069                 mvm->d3_test_pme_ptr =
1070                         le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data);
1071         }
1072 #endif
1073         iwl_free_resp(&d3_cfg_cmd);
1074
1075         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1076
1077         ret = iwl_trans_d3_suspend(mvm->trans, test, !unified_image);
1078  out:
1079         if (ret < 0) {
1080                 iwl_mvm_free_nd(mvm);
1081
1082                 if (!unified_image) {
1083                         if (mvm->fw_restart > 0) {
1084                                 mvm->fw_restart--;
1085                                 ieee80211_restart_hw(mvm->hw);
1086                         }
1087                 }
1088
1089                 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
1090         }
1091  out_noreset:
1092         mutex_unlock(&mvm->mutex);
1093
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         iwl_mvm_pause_tcm(mvm, true);
1104
1105         iwl_fw_runtime_suspend(&mvm->fwrt);
1106
1107         ret = iwl_trans_suspend(trans);
1108         if (ret)
1109                 return ret;
1110
1111         trans->system_pm_mode = IWL_PLAT_PM_MODE_D3;
1112
1113         return __iwl_mvm_suspend(hw, wowlan, false);
1114 }
1115
1116 /* converted data from the different status responses */
1117 struct iwl_wowlan_status_data {
1118         u16 pattern_number;
1119         u16 qos_seq_ctr[8];
1120         u32 wakeup_reasons;
1121         u32 wake_packet_length;
1122         u32 wake_packet_bufsize;
1123         const u8 *wake_packet;
1124 };
1125
1126 static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm,
1127                                           struct ieee80211_vif *vif,
1128                                           struct iwl_wowlan_status_data *status)
1129 {
1130         struct sk_buff *pkt = NULL;
1131         struct cfg80211_wowlan_wakeup wakeup = {
1132                 .pattern_idx = -1,
1133         };
1134         struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
1135         u32 reasons = status->wakeup_reasons;
1136
1137         if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
1138                 wakeup_report = NULL;
1139                 goto report;
1140         }
1141
1142         pm_wakeup_event(mvm->dev, 0);
1143
1144         if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET)
1145                 wakeup.magic_pkt = true;
1146
1147         if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN)
1148                 wakeup.pattern_idx =
1149                         status->pattern_number;
1150
1151         if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1152                        IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH))
1153                 wakeup.disconnect = true;
1154
1155         if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)
1156                 wakeup.gtk_rekey_failure = true;
1157
1158         if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
1159                 wakeup.rfkill_release = true;
1160
1161         if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST)
1162                 wakeup.eap_identity_req = true;
1163
1164         if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE)
1165                 wakeup.four_way_handshake = true;
1166
1167         if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS)
1168                 wakeup.tcp_connlost = true;
1169
1170         if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE)
1171                 wakeup.tcp_nomoretokens = true;
1172
1173         if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET)
1174                 wakeup.tcp_match = true;
1175
1176         if (status->wake_packet_bufsize) {
1177                 int pktsize = status->wake_packet_bufsize;
1178                 int pktlen = status->wake_packet_length;
1179                 const u8 *pktdata = status->wake_packet;
1180                 struct ieee80211_hdr *hdr = (void *)pktdata;
1181                 int truncated = pktlen - pktsize;
1182
1183                 /* this would be a firmware bug */
1184                 if (WARN_ON_ONCE(truncated < 0))
1185                         truncated = 0;
1186
1187                 if (ieee80211_is_data(hdr->frame_control)) {
1188                         int hdrlen = ieee80211_hdrlen(hdr->frame_control);
1189                         int ivlen = 0, icvlen = 4; /* also FCS */
1190
1191                         pkt = alloc_skb(pktsize, GFP_KERNEL);
1192                         if (!pkt)
1193                                 goto report;
1194
1195                         skb_put_data(pkt, pktdata, hdrlen);
1196                         pktdata += hdrlen;
1197                         pktsize -= hdrlen;
1198
1199                         if (ieee80211_has_protected(hdr->frame_control)) {
1200                                 /*
1201                                  * This is unlocked and using gtk_i(c)vlen,
1202                                  * but since everything is under RTNL still
1203                                  * that's not really a problem - changing
1204                                  * it would be difficult.
1205                                  */
1206                                 if (is_multicast_ether_addr(hdr->addr1)) {
1207                                         ivlen = mvm->gtk_ivlen;
1208                                         icvlen += mvm->gtk_icvlen;
1209                                 } else {
1210                                         ivlen = mvm->ptk_ivlen;
1211                                         icvlen += mvm->ptk_icvlen;
1212                                 }
1213                         }
1214
1215                         /* if truncated, FCS/ICV is (partially) gone */
1216                         if (truncated >= icvlen) {
1217                                 icvlen = 0;
1218                                 truncated -= icvlen;
1219                         } else {
1220                                 icvlen -= truncated;
1221                                 truncated = 0;
1222                         }
1223
1224                         pktsize -= ivlen + icvlen;
1225                         pktdata += ivlen;
1226
1227                         skb_put_data(pkt, pktdata, pktsize);
1228
1229                         if (ieee80211_data_to_8023(pkt, vif->addr, vif->type))
1230                                 goto report;
1231                         wakeup.packet = pkt->data;
1232                         wakeup.packet_present_len = pkt->len;
1233                         wakeup.packet_len = pkt->len - truncated;
1234                         wakeup.packet_80211 = false;
1235                 } else {
1236                         int fcslen = 4;
1237
1238                         if (truncated >= 4) {
1239                                 truncated -= 4;
1240                                 fcslen = 0;
1241                         } else {
1242                                 fcslen -= truncated;
1243                                 truncated = 0;
1244                         }
1245                         pktsize -= fcslen;
1246                         wakeup.packet = status->wake_packet;
1247                         wakeup.packet_present_len = pktsize;
1248                         wakeup.packet_len = pktlen - truncated;
1249                         wakeup.packet_80211 = true;
1250                 }
1251         }
1252
1253  report:
1254         ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
1255         kfree_skb(pkt);
1256 }
1257
1258 static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc,
1259                                   struct ieee80211_key_seq *seq)
1260 {
1261         u64 pn;
1262
1263         pn = le64_to_cpu(sc->pn);
1264         seq->ccmp.pn[0] = pn >> 40;
1265         seq->ccmp.pn[1] = pn >> 32;
1266         seq->ccmp.pn[2] = pn >> 24;
1267         seq->ccmp.pn[3] = pn >> 16;
1268         seq->ccmp.pn[4] = pn >> 8;
1269         seq->ccmp.pn[5] = pn;
1270 }
1271
1272 static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc,
1273                                    struct ieee80211_key_seq *seq)
1274 {
1275         seq->tkip.iv32 = le32_to_cpu(sc->iv32);
1276         seq->tkip.iv16 = le16_to_cpu(sc->iv16);
1277 }
1278
1279 static void iwl_mvm_set_aes_rx_seq(struct iwl_mvm *mvm, struct aes_sc *scs,
1280                                    struct ieee80211_sta *sta,
1281                                    struct ieee80211_key_conf *key)
1282 {
1283         int tid;
1284
1285         BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS);
1286
1287         if (sta && iwl_mvm_has_new_rx_api(mvm)) {
1288                 struct iwl_mvm_sta *mvmsta;
1289                 struct iwl_mvm_key_pn *ptk_pn;
1290
1291                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1292
1293                 ptk_pn = rcu_dereference_protected(mvmsta->ptk_pn[key->keyidx],
1294                                                    lockdep_is_held(&mvm->mutex));
1295                 if (WARN_ON(!ptk_pn))
1296                         return;
1297
1298                 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1299                         struct ieee80211_key_seq seq = {};
1300                         int i;
1301
1302                         iwl_mvm_aes_sc_to_seq(&scs[tid], &seq);
1303                         ieee80211_set_key_rx_seq(key, tid, &seq);
1304                         for (i = 1; i < mvm->trans->num_rx_queues; i++)
1305                                 memcpy(ptk_pn->q[i].pn[tid],
1306                                        seq.ccmp.pn, IEEE80211_CCMP_PN_LEN);
1307                 }
1308         } else {
1309                 for (tid = 0; tid < IWL_NUM_RSC; tid++) {
1310                         struct ieee80211_key_seq seq = {};
1311
1312                         iwl_mvm_aes_sc_to_seq(&scs[tid], &seq);
1313                         ieee80211_set_key_rx_seq(key, tid, &seq);
1314                 }
1315         }
1316 }
1317
1318 static void iwl_mvm_set_tkip_rx_seq(struct tkip_sc *scs,
1319                                     struct ieee80211_key_conf *key)
1320 {
1321         int tid;
1322
1323         BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS);
1324
1325         for (tid = 0; tid < IWL_NUM_RSC; tid++) {
1326                 struct ieee80211_key_seq seq = {};
1327
1328                 iwl_mvm_tkip_sc_to_seq(&scs[tid], &seq);
1329                 ieee80211_set_key_rx_seq(key, tid, &seq);
1330         }
1331 }
1332
1333 static void iwl_mvm_set_key_rx_seq(struct iwl_mvm *mvm,
1334                                    struct ieee80211_key_conf *key,
1335                                    struct iwl_wowlan_status *status)
1336 {
1337         union iwl_all_tsc_rsc *rsc = &status->gtk[0].rsc.all_tsc_rsc;
1338
1339         switch (key->cipher) {
1340         case WLAN_CIPHER_SUITE_CCMP:
1341                 iwl_mvm_set_aes_rx_seq(mvm, rsc->aes.multicast_rsc, NULL, key);
1342                 break;
1343         case WLAN_CIPHER_SUITE_TKIP:
1344                 iwl_mvm_set_tkip_rx_seq(rsc->tkip.multicast_rsc, key);
1345                 break;
1346         default:
1347                 WARN_ON(1);
1348         }
1349 }
1350
1351 struct iwl_mvm_d3_gtk_iter_data {
1352         struct iwl_mvm *mvm;
1353         struct iwl_wowlan_status *status;
1354         void *last_gtk;
1355         u32 cipher;
1356         bool find_phase, unhandled_cipher;
1357         int num_keys;
1358 };
1359
1360 static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw,
1361                                    struct ieee80211_vif *vif,
1362                                    struct ieee80211_sta *sta,
1363                                    struct ieee80211_key_conf *key,
1364                                    void *_data)
1365 {
1366         struct iwl_mvm_d3_gtk_iter_data *data = _data;
1367
1368         if (data->unhandled_cipher)
1369                 return;
1370
1371         switch (key->cipher) {
1372         case WLAN_CIPHER_SUITE_WEP40:
1373         case WLAN_CIPHER_SUITE_WEP104:
1374                 /* ignore WEP completely, nothing to do */
1375                 return;
1376         case WLAN_CIPHER_SUITE_CCMP:
1377         case WLAN_CIPHER_SUITE_TKIP:
1378                 /* we support these */
1379                 break;
1380         default:
1381                 /* everything else (even CMAC for MFP) - disconnect from AP */
1382                 data->unhandled_cipher = true;
1383                 return;
1384         }
1385
1386         data->num_keys++;
1387
1388         /*
1389          * pairwise key - update sequence counters only;
1390          * note that this assumes no TDLS sessions are active
1391          */
1392         if (sta) {
1393                 struct ieee80211_key_seq seq = {};
1394                 union iwl_all_tsc_rsc *sc =
1395                         &data->status->gtk[0].rsc.all_tsc_rsc;
1396
1397                 if (data->find_phase)
1398                         return;
1399
1400                 switch (key->cipher) {
1401                 case WLAN_CIPHER_SUITE_CCMP:
1402                         iwl_mvm_set_aes_rx_seq(data->mvm, sc->aes.unicast_rsc,
1403                                                sta, key);
1404                         atomic64_set(&key->tx_pn, le64_to_cpu(sc->aes.tsc.pn));
1405                         break;
1406                 case WLAN_CIPHER_SUITE_TKIP:
1407                         iwl_mvm_tkip_sc_to_seq(&sc->tkip.tsc, &seq);
1408                         iwl_mvm_set_tkip_rx_seq(sc->tkip.unicast_rsc, key);
1409                         atomic64_set(&key->tx_pn,
1410                                      (u64)seq.tkip.iv16 |
1411                                      ((u64)seq.tkip.iv32 << 16));
1412                         break;
1413                 }
1414
1415                 /* that's it for this key */
1416                 return;
1417         }
1418
1419         if (data->find_phase) {
1420                 data->last_gtk = key;
1421                 data->cipher = key->cipher;
1422                 return;
1423         }
1424
1425         if (data->status->num_of_gtk_rekeys)
1426                 ieee80211_remove_key(key);
1427         else if (data->last_gtk == key)
1428                 iwl_mvm_set_key_rx_seq(data->mvm, key, data->status);
1429 }
1430
1431 static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm,
1432                                           struct ieee80211_vif *vif,
1433                                           struct iwl_wowlan_status *status)
1434 {
1435         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1436         struct iwl_mvm_d3_gtk_iter_data gtkdata = {
1437                 .mvm = mvm,
1438                 .status = status,
1439         };
1440         u32 disconnection_reasons =
1441                 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1442                 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH;
1443
1444         if (!status || !vif->bss_conf.bssid)
1445                 return false;
1446
1447         if (le32_to_cpu(status->wakeup_reasons) & disconnection_reasons)
1448                 return false;
1449
1450         /* find last GTK that we used initially, if any */
1451         gtkdata.find_phase = true;
1452         ieee80211_iter_keys(mvm->hw, vif,
1453                             iwl_mvm_d3_update_keys, &gtkdata);
1454         /* not trying to keep connections with MFP/unhandled ciphers */
1455         if (gtkdata.unhandled_cipher)
1456                 return false;
1457         if (!gtkdata.num_keys)
1458                 goto out;
1459         if (!gtkdata.last_gtk)
1460                 return false;
1461
1462         /*
1463          * invalidate all other GTKs that might still exist and update
1464          * the one that we used
1465          */
1466         gtkdata.find_phase = false;
1467         ieee80211_iter_keys(mvm->hw, vif,
1468                             iwl_mvm_d3_update_keys, &gtkdata);
1469
1470         if (status->num_of_gtk_rekeys) {
1471                 struct ieee80211_key_conf *key;
1472                 struct {
1473                         struct ieee80211_key_conf conf;
1474                         u8 key[32];
1475                 } conf = {
1476                         .conf.cipher = gtkdata.cipher,
1477                         .conf.keyidx =
1478                                 iwlmvm_wowlan_gtk_idx(&status->gtk[0]),
1479                 };
1480                 __be64 replay_ctr;
1481
1482                 switch (gtkdata.cipher) {
1483                 case WLAN_CIPHER_SUITE_CCMP:
1484                         conf.conf.keylen = WLAN_KEY_LEN_CCMP;
1485                         memcpy(conf.conf.key, status->gtk[0].key,
1486                                WLAN_KEY_LEN_CCMP);
1487                         break;
1488                 case WLAN_CIPHER_SUITE_TKIP:
1489                         conf.conf.keylen = WLAN_KEY_LEN_TKIP;
1490                         memcpy(conf.conf.key, status->gtk[0].key, 16);
1491                         /* leave TX MIC key zeroed, we don't use it anyway */
1492                         memcpy(conf.conf.key +
1493                                NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
1494                                status->gtk[0].tkip_mic_key, 8);
1495                         break;
1496                 }
1497
1498                 key = ieee80211_gtk_rekey_add(vif, &conf.conf);
1499                 if (IS_ERR(key))
1500                         return false;
1501                 iwl_mvm_set_key_rx_seq(mvm, key, status);
1502
1503                 replay_ctr =
1504                         cpu_to_be64(le64_to_cpu(status->replay_ctr));
1505
1506                 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid,
1507                                            (void *)&replay_ctr, GFP_KERNEL);
1508         }
1509
1510 out:
1511         mvmvif->seqno_valid = true;
1512         /* +0x10 because the set API expects next-to-use, not last-used */
1513         mvmvif->seqno = le16_to_cpu(status->non_qos_seq_ctr) + 0x10;
1514
1515         return true;
1516 }
1517
1518 struct iwl_wowlan_status *iwl_mvm_send_wowlan_get_status(struct iwl_mvm *mvm)
1519 {
1520         struct iwl_wowlan_status *v7, *status;
1521         struct iwl_host_cmd cmd = {
1522                 .id = WOWLAN_GET_STATUSES,
1523                 .flags = CMD_WANT_SKB,
1524         };
1525         int ret, len, status_size;
1526
1527         lockdep_assert_held(&mvm->mutex);
1528
1529         ret = iwl_mvm_send_cmd(mvm, &cmd);
1530         if (ret) {
1531                 IWL_ERR(mvm, "failed to query wakeup status (%d)\n", ret);
1532                 return ERR_PTR(ret);
1533         }
1534
1535         if (!fw_has_api(&mvm->fw->ucode_capa,
1536                         IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL)) {
1537                 struct iwl_wowlan_status_v6 *v6 = (void *)cmd.resp_pkt->data;
1538                 int data_size;
1539
1540                 status_size = sizeof(*v6);
1541                 len = iwl_rx_packet_payload_len(cmd.resp_pkt);
1542
1543                 if (len < status_size) {
1544                         IWL_ERR(mvm, "Invalid WoWLAN status response!\n");
1545                         status = ERR_PTR(-EIO);
1546                         goto out_free_resp;
1547                 }
1548
1549                 data_size = ALIGN(le32_to_cpu(v6->wake_packet_bufsize), 4);
1550
1551                 if (len != (status_size + data_size)) {
1552                         IWL_ERR(mvm, "Invalid WoWLAN status response!\n");
1553                         status = ERR_PTR(-EIO);
1554                         goto out_free_resp;
1555                 }
1556
1557                 status = kzalloc(sizeof(*status) + data_size, GFP_KERNEL);
1558                 if (!status)
1559                         goto out_free_resp;
1560
1561                 BUILD_BUG_ON(sizeof(v6->gtk.decrypt_key) >
1562                              sizeof(status->gtk[0].key));
1563                 BUILD_BUG_ON(sizeof(v6->gtk.tkip_mic_key) >
1564                              sizeof(status->gtk[0].tkip_mic_key));
1565
1566                 /* copy GTK info to the right place */
1567                 memcpy(status->gtk[0].key, v6->gtk.decrypt_key,
1568                        sizeof(v6->gtk.decrypt_key));
1569                 memcpy(status->gtk[0].tkip_mic_key, v6->gtk.tkip_mic_key,
1570                        sizeof(v6->gtk.tkip_mic_key));
1571                 memcpy(&status->gtk[0].rsc, &v6->gtk.rsc,
1572                        sizeof(status->gtk[0].rsc));
1573
1574                 /* hardcode the key length to 16 since v6 only supports 16 */
1575                 status->gtk[0].key_len = 16;
1576
1577                 /*
1578                  * The key index only uses 2 bits (values 0 to 3) and
1579                  * we always set bit 7 which means this is the
1580                  * currently used key.
1581                  */
1582                 status->gtk[0].key_flags = v6->gtk.key_index | BIT(7);
1583
1584                 status->replay_ctr = v6->replay_ctr;
1585
1586                 /* everything starting from pattern_number is identical */
1587                 memcpy(&status->pattern_number, &v6->pattern_number,
1588                        offsetof(struct iwl_wowlan_status, wake_packet) -
1589                        offsetof(struct iwl_wowlan_status, pattern_number) +
1590                        data_size);
1591
1592                 goto out_free_resp;
1593         }
1594
1595         v7 = (void *)cmd.resp_pkt->data;
1596         status_size = sizeof(*v7);
1597         len = iwl_rx_packet_payload_len(cmd.resp_pkt);
1598
1599         if (len < status_size) {
1600                 IWL_ERR(mvm, "Invalid WoWLAN status response!\n");
1601                 status = ERR_PTR(-EIO);
1602                 goto out_free_resp;
1603         }
1604
1605         if (len != (status_size +
1606                     ALIGN(le32_to_cpu(v7->wake_packet_bufsize), 4))) {
1607                 IWL_ERR(mvm, "Invalid WoWLAN status response!\n");
1608                 status = ERR_PTR(-EIO);
1609                 goto out_free_resp;
1610         }
1611
1612         status = kmemdup(v7, len, GFP_KERNEL);
1613
1614 out_free_resp:
1615         iwl_free_resp(&cmd);
1616         return status;
1617 }
1618
1619 static struct iwl_wowlan_status *
1620 iwl_mvm_get_wakeup_status(struct iwl_mvm *mvm)
1621 {
1622         int ret;
1623
1624         /* only for tracing for now */
1625         ret = iwl_mvm_send_cmd_pdu(mvm, OFFLOADS_QUERY_CMD, 0, 0, NULL);
1626         if (ret)
1627                 IWL_ERR(mvm, "failed to query offload statistics (%d)\n", ret);
1628
1629         return iwl_mvm_send_wowlan_get_status(mvm);
1630 }
1631
1632 /* releases the MVM mutex */
1633 static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm,
1634                                          struct ieee80211_vif *vif)
1635 {
1636         struct iwl_wowlan_status_data status;
1637         struct iwl_wowlan_status *fw_status;
1638         int i;
1639         bool keep;
1640         struct iwl_mvm_sta *mvm_ap_sta;
1641
1642         fw_status = iwl_mvm_get_wakeup_status(mvm);
1643         if (IS_ERR_OR_NULL(fw_status))
1644                 goto out_unlock;
1645
1646         status.pattern_number = le16_to_cpu(fw_status->pattern_number);
1647         for (i = 0; i < 8; i++)
1648                 status.qos_seq_ctr[i] =
1649                         le16_to_cpu(fw_status->qos_seq_ctr[i]);
1650         status.wakeup_reasons = le32_to_cpu(fw_status->wakeup_reasons);
1651         status.wake_packet_length =
1652                 le32_to_cpu(fw_status->wake_packet_length);
1653         status.wake_packet_bufsize =
1654                 le32_to_cpu(fw_status->wake_packet_bufsize);
1655         status.wake_packet = fw_status->wake_packet;
1656
1657         /* still at hard-coded place 0 for D3 image */
1658         mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, 0);
1659         if (!mvm_ap_sta)
1660                 goto out_free;
1661
1662         for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1663                 u16 seq = status.qos_seq_ctr[i];
1664                 /* firmware stores last-used value, we store next value */
1665                 seq += 0x10;
1666                 mvm_ap_sta->tid_data[i].seq_number = seq;
1667         }
1668
1669         if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000) {
1670                 i = mvm->offload_tid;
1671                 iwl_trans_set_q_ptrs(mvm->trans,
1672                                      mvm_ap_sta->tid_data[i].txq_id,
1673                                      mvm_ap_sta->tid_data[i].seq_number >> 4);
1674         }
1675
1676         /* now we have all the data we need, unlock to avoid mac80211 issues */
1677         mutex_unlock(&mvm->mutex);
1678
1679         iwl_mvm_report_wakeup_reasons(mvm, vif, &status);
1680
1681         keep = iwl_mvm_setup_connection_keep(mvm, vif, fw_status);
1682
1683         kfree(fw_status);
1684         return keep;
1685
1686 out_free:
1687         kfree(fw_status);
1688 out_unlock:
1689         mutex_unlock(&mvm->mutex);
1690         return false;
1691 }
1692
1693 #define ND_QUERY_BUF_LEN (sizeof(struct iwl_scan_offload_profile_match) * \
1694                           IWL_SCAN_MAX_PROFILES)
1695
1696 struct iwl_mvm_nd_query_results {
1697         u32 matched_profiles;
1698         u8 matches[ND_QUERY_BUF_LEN];
1699 };
1700
1701 static int
1702 iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm,
1703                                 struct iwl_mvm_nd_query_results *results)
1704 {
1705         struct iwl_scan_offload_profiles_query *query;
1706         struct iwl_host_cmd cmd = {
1707                 .id = SCAN_OFFLOAD_PROFILES_QUERY_CMD,
1708                 .flags = CMD_WANT_SKB,
1709         };
1710         int ret, len;
1711         size_t query_len, matches_len;
1712
1713         ret = iwl_mvm_send_cmd(mvm, &cmd);
1714         if (ret) {
1715                 IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret);
1716                 return ret;
1717         }
1718
1719         if (fw_has_api(&mvm->fw->ucode_capa,
1720                        IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
1721                 query_len = sizeof(struct iwl_scan_offload_profiles_query);
1722                 matches_len = sizeof(struct iwl_scan_offload_profile_match) *
1723                         IWL_SCAN_MAX_PROFILES;
1724         } else {
1725                 query_len = sizeof(struct iwl_scan_offload_profiles_query_v1);
1726                 matches_len = sizeof(struct iwl_scan_offload_profile_match_v1) *
1727                         IWL_SCAN_MAX_PROFILES;
1728         }
1729
1730         len = iwl_rx_packet_payload_len(cmd.resp_pkt);
1731         if (len < query_len) {
1732                 IWL_ERR(mvm, "Invalid scan offload profiles query response!\n");
1733                 ret = -EIO;
1734                 goto out_free_resp;
1735         }
1736
1737         query = (void *)cmd.resp_pkt->data;
1738
1739         results->matched_profiles = le32_to_cpu(query->matched_profiles);
1740         memcpy(results->matches, query->matches, matches_len);
1741
1742 #ifdef CONFIG_IWLWIFI_DEBUGFS
1743         mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done);
1744 #endif
1745
1746 out_free_resp:
1747         iwl_free_resp(&cmd);
1748         return ret;
1749 }
1750
1751 static int iwl_mvm_query_num_match_chans(struct iwl_mvm *mvm,
1752                                          struct iwl_mvm_nd_query_results *query,
1753                                          int idx)
1754 {
1755         int n_chans = 0, i;
1756
1757         if (fw_has_api(&mvm->fw->ucode_capa,
1758                        IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
1759                 struct iwl_scan_offload_profile_match *matches =
1760                         (struct iwl_scan_offload_profile_match *)query->matches;
1761
1762                 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; i++)
1763                         n_chans += hweight8(matches[idx].matching_channels[i]);
1764         } else {
1765                 struct iwl_scan_offload_profile_match_v1 *matches =
1766                         (struct iwl_scan_offload_profile_match_v1 *)query->matches;
1767
1768                 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1; i++)
1769                         n_chans += hweight8(matches[idx].matching_channels[i]);
1770         }
1771
1772         return n_chans;
1773 }
1774
1775 static void iwl_mvm_query_set_freqs(struct iwl_mvm *mvm,
1776                                     struct iwl_mvm_nd_query_results *query,
1777                                     struct cfg80211_wowlan_nd_match *match,
1778                                     int idx)
1779 {
1780         int i;
1781
1782         if (fw_has_api(&mvm->fw->ucode_capa,
1783                        IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
1784                 struct iwl_scan_offload_profile_match *matches =
1785                         (struct iwl_scan_offload_profile_match *)query->matches;
1786
1787                 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; i++)
1788                         if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
1789                                 match->channels[match->n_channels++] =
1790                                         mvm->nd_channels[i]->center_freq;
1791         } else {
1792                 struct iwl_scan_offload_profile_match_v1 *matches =
1793                         (struct iwl_scan_offload_profile_match_v1 *)query->matches;
1794
1795                 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1 * 8; i++)
1796                         if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
1797                                 match->channels[match->n_channels++] =
1798                                         mvm->nd_channels[i]->center_freq;
1799         }
1800 }
1801
1802 static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm,
1803                                             struct ieee80211_vif *vif)
1804 {
1805         struct cfg80211_wowlan_nd_info *net_detect = NULL;
1806         struct cfg80211_wowlan_wakeup wakeup = {
1807                 .pattern_idx = -1,
1808         };
1809         struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
1810         struct iwl_mvm_nd_query_results query;
1811         struct iwl_wowlan_status *fw_status;
1812         unsigned long matched_profiles;
1813         u32 reasons = 0;
1814         int i, n_matches, ret;
1815
1816         fw_status = iwl_mvm_get_wakeup_status(mvm);
1817         if (!IS_ERR_OR_NULL(fw_status)) {
1818                 reasons = le32_to_cpu(fw_status->wakeup_reasons);
1819                 kfree(fw_status);
1820         }
1821
1822         if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
1823                 wakeup.rfkill_release = true;
1824
1825         if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS)
1826                 goto out;
1827
1828         ret = iwl_mvm_netdetect_query_results(mvm, &query);
1829         if (ret || !query.matched_profiles) {
1830                 wakeup_report = NULL;
1831                 goto out;
1832         }
1833
1834         matched_profiles = query.matched_profiles;
1835         if (mvm->n_nd_match_sets) {
1836                 n_matches = hweight_long(matched_profiles);
1837         } else {
1838                 IWL_ERR(mvm, "no net detect match information available\n");
1839                 n_matches = 0;
1840         }
1841
1842         net_detect = kzalloc(struct_size(net_detect, matches, n_matches),
1843                              GFP_KERNEL);
1844         if (!net_detect || !n_matches)
1845                 goto out_report_nd;
1846
1847         for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) {
1848                 struct cfg80211_wowlan_nd_match *match;
1849                 int idx, n_channels = 0;
1850
1851                 n_channels = iwl_mvm_query_num_match_chans(mvm, &query, i);
1852
1853                 match = kzalloc(struct_size(match, channels, n_channels),
1854                                 GFP_KERNEL);
1855                 if (!match)
1856                         goto out_report_nd;
1857
1858                 net_detect->matches[net_detect->n_matches++] = match;
1859
1860                 /* We inverted the order of the SSIDs in the scan
1861                  * request, so invert the index here.
1862                  */
1863                 idx = mvm->n_nd_match_sets - i - 1;
1864                 match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len;
1865                 memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid,
1866                        match->ssid.ssid_len);
1867
1868                 if (mvm->n_nd_channels < n_channels)
1869                         continue;
1870
1871                 iwl_mvm_query_set_freqs(mvm, &query, match, i);
1872         }
1873
1874 out_report_nd:
1875         wakeup.net_detect = net_detect;
1876 out:
1877         iwl_mvm_free_nd(mvm);
1878
1879         mutex_unlock(&mvm->mutex);
1880         ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
1881
1882         if (net_detect) {
1883                 for (i = 0; i < net_detect->n_matches; i++)
1884                         kfree(net_detect->matches[i]);
1885                 kfree(net_detect);
1886         }
1887 }
1888
1889 static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac,
1890                                        struct ieee80211_vif *vif)
1891 {
1892         /* skip the one we keep connection on */
1893         if (data == vif)
1894                 return;
1895
1896         if (vif->type == NL80211_IFTYPE_STATION)
1897                 ieee80211_resume_disconnect(vif);
1898 }
1899
1900 static bool iwl_mvm_rt_status(struct iwl_trans *trans, u32 base, u32 *err_id)
1901 {
1902         struct error_table_start {
1903                 /* cf. struct iwl_error_event_table */
1904                 u32 valid;
1905                 __le32 err_id;
1906         } err_info;
1907
1908         if (!base)
1909                 return false;
1910
1911         iwl_trans_read_mem_bytes(trans, base,
1912                                  &err_info, sizeof(err_info));
1913         if (err_info.valid && err_id)
1914                 *err_id = le32_to_cpu(err_info.err_id);
1915
1916         return !!err_info.valid;
1917 }
1918
1919 static bool iwl_mvm_check_rt_status(struct iwl_mvm *mvm,
1920                                    struct ieee80211_vif *vif)
1921 {
1922         u32 err_id;
1923
1924         /* check for lmac1 error */
1925         if (iwl_mvm_rt_status(mvm->trans,
1926                               mvm->trans->dbg.lmac_error_event_table[0],
1927                               &err_id)) {
1928                 if (err_id == RF_KILL_INDICATOR_FOR_WOWLAN) {
1929                         struct cfg80211_wowlan_wakeup wakeup = {
1930                                 .rfkill_release = true,
1931                         };
1932                         ieee80211_report_wowlan_wakeup(vif, &wakeup,
1933                                                        GFP_KERNEL);
1934                 }
1935                 return true;
1936         }
1937
1938         /* check if we have lmac2 set and check for error */
1939         if (iwl_mvm_rt_status(mvm->trans,
1940                               mvm->trans->dbg.lmac_error_event_table[1], NULL))
1941                 return true;
1942
1943         /* check for umac error */
1944         if (iwl_mvm_rt_status(mvm->trans,
1945                               mvm->trans->dbg.umac_error_event_table, NULL))
1946                 return true;
1947
1948         return false;
1949 }
1950
1951 static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test)
1952 {
1953         struct ieee80211_vif *vif = NULL;
1954         int ret = 1;
1955         enum iwl_d3_status d3_status;
1956         bool keep = false;
1957         bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1958                                          IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1959         bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa,
1960                                       IWL_UCODE_TLV_CAPA_D0I3_END_FIRST);
1961
1962         mutex_lock(&mvm->mutex);
1963
1964         clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
1965
1966         /* get the BSS vif pointer again */
1967         vif = iwl_mvm_get_bss_vif(mvm);
1968         if (IS_ERR_OR_NULL(vif))
1969                 goto err;
1970
1971         iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
1972
1973         if (iwl_mvm_check_rt_status(mvm, vif)) {
1974                 set_bit(STATUS_FW_ERROR, &mvm->trans->status);
1975                 iwl_mvm_dump_nic_error_log(mvm);
1976                 iwl_dbg_tlv_time_point(&mvm->fwrt,
1977                                        IWL_FW_INI_TIME_POINT_FW_ASSERT, NULL);
1978                 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert,
1979                                         false, 0);
1980                 ret = 1;
1981                 goto err;
1982         }
1983
1984         ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, !unified_image);
1985         if (ret)
1986                 goto err;
1987
1988         if (d3_status != IWL_D3_STATUS_ALIVE) {
1989                 IWL_INFO(mvm, "Device was reset during suspend\n");
1990                 goto err;
1991         }
1992
1993         if (d0i3_first) {
1994                 struct iwl_host_cmd cmd = {
1995                         .id = D0I3_END_CMD,
1996                         .flags = CMD_WANT_SKB,
1997                 };
1998                 int len;
1999
2000                 ret = iwl_mvm_send_cmd(mvm, &cmd);
2001                 if (ret < 0) {
2002                         IWL_ERR(mvm, "Failed to send D0I3_END_CMD first (%d)\n",
2003                                 ret);
2004                         goto err;
2005                 }
2006                 switch (mvm->cmd_ver.d0i3_resp) {
2007                 case 0:
2008                         break;
2009                 case 1:
2010                         len = iwl_rx_packet_payload_len(cmd.resp_pkt);
2011                         if (len != sizeof(u32)) {
2012                                 IWL_ERR(mvm,
2013                                         "Error with D0I3_END_CMD response size (%d)\n",
2014                                         len);
2015                                 goto err;
2016                         }
2017                         if (IWL_D0I3_RESET_REQUIRE &
2018                             le32_to_cpu(*(__le32 *)cmd.resp_pkt->data)) {
2019                                 iwl_write32(mvm->trans, CSR_RESET,
2020                                             CSR_RESET_REG_FLAG_FORCE_NMI);
2021                                 iwl_free_resp(&cmd);
2022                         }
2023                         break;
2024                 default:
2025                         WARN_ON(1);
2026                 }
2027         }
2028
2029         /*
2030          * Query the current location and source from the D3 firmware so we
2031          * can play it back when we re-intiailize the D0 firmware
2032          */
2033         iwl_mvm_update_changed_regdom(mvm);
2034
2035         /* Re-configure PPAG settings */
2036         iwl_mvm_ppag_send_cmd(mvm);
2037
2038         if (!unified_image)
2039                 /*  Re-configure default SAR profile */
2040                 iwl_mvm_sar_select_profile(mvm, 1, 1);
2041
2042         if (mvm->net_detect) {
2043                 /* If this is a non-unified image, we restart the FW,
2044                  * so no need to stop the netdetect scan.  If that
2045                  * fails, continue and try to get the wake-up reasons,
2046                  * but trigger a HW restart by keeping a failure code
2047                  * in ret.
2048                  */
2049                 if (unified_image)
2050                         ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT,
2051                                                 false);
2052
2053                 iwl_mvm_query_netdetect_reasons(mvm, vif);
2054                 /* has unlocked the mutex, so skip that */
2055                 goto out;
2056         } else {
2057                 keep = iwl_mvm_query_wakeup_reasons(mvm, vif);
2058 #ifdef CONFIG_IWLWIFI_DEBUGFS
2059                 if (keep)
2060                         mvm->keep_vif = vif;
2061 #endif
2062                 /* has unlocked the mutex, so skip that */
2063                 goto out_iterate;
2064         }
2065
2066 err:
2067         iwl_mvm_free_nd(mvm);
2068         mutex_unlock(&mvm->mutex);
2069
2070 out_iterate:
2071         if (!test)
2072                 ieee80211_iterate_active_interfaces_rtnl(mvm->hw,
2073                         IEEE80211_IFACE_ITER_NORMAL,
2074                         iwl_mvm_d3_disconnect_iter, keep ? vif : NULL);
2075
2076 out:
2077         /* no need to reset the device in unified images, if successful */
2078         if (unified_image && !ret) {
2079                 /* nothing else to do if we already sent D0I3_END_CMD */
2080                 if (d0i3_first)
2081                         return 0;
2082
2083                 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL);
2084                 if (!ret)
2085                         return 0;
2086         }
2087
2088         /*
2089          * Reconfigure the device in one of the following cases:
2090          * 1. We are not using a unified image
2091          * 2. We are using a unified image but had an error while exiting D3
2092          */
2093         set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
2094
2095         return 1;
2096 }
2097
2098 static int iwl_mvm_resume_d3(struct iwl_mvm *mvm)
2099 {
2100         iwl_trans_resume(mvm->trans);
2101
2102         return __iwl_mvm_resume(mvm, false);
2103 }
2104
2105 int iwl_mvm_resume(struct ieee80211_hw *hw)
2106 {
2107         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2108         int ret;
2109
2110         ret = iwl_mvm_resume_d3(mvm);
2111
2112         mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
2113
2114         iwl_mvm_resume_tcm(mvm);
2115
2116         iwl_fw_runtime_resume(&mvm->fwrt);
2117
2118         return ret;
2119 }
2120
2121 void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled)
2122 {
2123         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2124
2125         device_set_wakeup_enable(mvm->trans->dev, enabled);
2126 }
2127
2128 #ifdef CONFIG_IWLWIFI_DEBUGFS
2129 static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file)
2130 {
2131         struct iwl_mvm *mvm = inode->i_private;
2132         int err;
2133
2134         if (mvm->d3_test_active)
2135                 return -EBUSY;
2136
2137         file->private_data = inode->i_private;
2138
2139         synchronize_net();
2140
2141         mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_D3;
2142
2143         iwl_mvm_pause_tcm(mvm, true);
2144
2145         iwl_fw_runtime_suspend(&mvm->fwrt);
2146
2147         /* start pseudo D3 */
2148         rtnl_lock();
2149         err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true);
2150         rtnl_unlock();
2151         if (err > 0)
2152                 err = -EINVAL;
2153         if (err)
2154                 return err;
2155
2156         mvm->d3_test_active = true;
2157         mvm->keep_vif = NULL;
2158         return 0;
2159 }
2160
2161 static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf,
2162                                     size_t count, loff_t *ppos)
2163 {
2164         struct iwl_mvm *mvm = file->private_data;
2165         u32 pme_asserted;
2166
2167         while (true) {
2168                 /* read pme_ptr if available */
2169                 if (mvm->d3_test_pme_ptr) {
2170                         pme_asserted = iwl_trans_read_mem32(mvm->trans,
2171                                                 mvm->d3_test_pme_ptr);
2172                         if (pme_asserted)
2173                                 break;
2174                 }
2175
2176                 if (msleep_interruptible(100))
2177                         break;
2178         }
2179
2180         return 0;
2181 }
2182
2183 static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac,
2184                                               struct ieee80211_vif *vif)
2185 {
2186         /* skip the one we keep connection on */
2187         if (_data == vif)
2188                 return;
2189
2190         if (vif->type == NL80211_IFTYPE_STATION)
2191                 ieee80211_connection_loss(vif);
2192 }
2193
2194 static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file)
2195 {
2196         struct iwl_mvm *mvm = inode->i_private;
2197         bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
2198                                          IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2199
2200         mvm->d3_test_active = false;
2201
2202         iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
2203
2204         rtnl_lock();
2205         __iwl_mvm_resume(mvm, true);
2206         rtnl_unlock();
2207
2208         iwl_mvm_resume_tcm(mvm);
2209
2210         iwl_fw_runtime_resume(&mvm->fwrt);
2211
2212         mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
2213
2214         iwl_abort_notification_waits(&mvm->notif_wait);
2215         if (!unified_image) {
2216                 int remaining_time = 10;
2217
2218                 ieee80211_restart_hw(mvm->hw);
2219
2220                 /* wait for restart and disconnect all interfaces */
2221                 while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2222                        remaining_time > 0) {
2223                         remaining_time--;
2224                         msleep(1000);
2225                 }
2226
2227                 if (remaining_time == 0)
2228                         IWL_ERR(mvm, "Timed out waiting for HW restart!\n");
2229         }
2230
2231         ieee80211_iterate_active_interfaces_atomic(
2232                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
2233                 iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif);
2234
2235         return 0;
2236 }
2237
2238 const struct file_operations iwl_dbgfs_d3_test_ops = {
2239         .llseek = no_llseek,
2240         .open = iwl_mvm_d3_test_open,
2241         .read = iwl_mvm_d3_test_read,
2242         .release = iwl_mvm_d3_test_release,
2243 };
2244 #endif