linux/drivers/net/wireless/intel/iwlwifi/mvm/d3.c
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   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.
  16 *
  17 * This program is distributed in the hope that it will be useful, but
  18 * WITHOUT ANY WARRANTY; without even the implied warranty of
  19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  20 * General Public License for more details.
  21 *
  22 * The full GNU General Public License is included in this distribution
  23 * in the file called COPYING.
  24 *
  25 * Contact Information:
  26 *  Intel Linux Wireless <linuxwifi@intel.com>
  27 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  28 *
  29 * BSD LICENSE
  30 *
  31 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  32 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  33 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
  34 * Copyright(c) 2018 - 2019 Intel Corporation
  35 * All rights reserved.
  36 *
  37 * Redistribution and use in source and binary forms, with or without
  38 * modification, are permitted provided that the following conditions
  39 * are met:
  40 *
  41 *  * Redistributions of source code must retain the above copyright
  42 *    notice, this list of conditions and the following disclaimer.
  43 *  * Redistributions in binary form must reproduce the above copyright
  44 *    notice, this list of conditions and the following disclaimer in
  45 *    the documentation and/or other materials provided with the
  46 *    distribution.
  47 *  * Neither the name Intel Corporation nor the names of its
  48 *    contributors may be used to endorse or promote products derived
  49 *    from this software without specific prior written permission.
  50 *
  51 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  52 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  53 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  54 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  55 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  56 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  57 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  58 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  59 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  60 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  61 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  62 *
  63 *****************************************************************************/
  64
  65#include <linux/etherdevice.h>
  66#include <linux/ip.h>
  67#include <linux/fs.h>
  68#include <net/cfg80211.h>
  69#include <net/ipv6.h>
  70#include <net/tcp.h>
  71#include <net/addrconf.h>
  72#include "iwl-modparams.h"
  73#include "fw-api.h"
  74#include "mvm.h"
  75
  76void 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)
  98void 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
 123void 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
 131static 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
 139static 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
 161struct 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
 168static 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
 388static 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] = sizeof(*pattern_cmd) +
 402                wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern_v1);
 403
 404        pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
 405        if (!pattern_cmd)
 406                return -ENOMEM;
 407
 408        pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
 409
 410        for (i = 0; i < wowlan->n_patterns; i++) {
 411                int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
 412
 413                memcpy(&pattern_cmd->patterns[i].mask,
 414                       wowlan->patterns[i].mask, mask_len);
 415                memcpy(&pattern_cmd->patterns[i].pattern,
 416                       wowlan->patterns[i].pattern,
 417                       wowlan->patterns[i].pattern_len);
 418                pattern_cmd->patterns[i].mask_size = mask_len;
 419                pattern_cmd->patterns[i].pattern_size =
 420                        wowlan->patterns[i].pattern_len;
 421        }
 422
 423        cmd.data[0] = pattern_cmd;
 424        err = iwl_mvm_send_cmd(mvm, &cmd);
 425        kfree(pattern_cmd);
 426        return err;
 427}
 428
 429static int iwl_mvm_send_patterns(struct iwl_mvm *mvm,
 430                                 struct cfg80211_wowlan *wowlan)
 431{
 432        struct iwl_wowlan_patterns_cmd *pattern_cmd;
 433        struct iwl_host_cmd cmd = {
 434                .id = WOWLAN_PATTERNS,
 435                .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
 436        };
 437        int i, err;
 438
 439        if (!wowlan->n_patterns)
 440                return 0;
 441
 442        cmd.len[0] = sizeof(*pattern_cmd) +
 443                wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern_v2);
 444
 445        pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
 446        if (!pattern_cmd)
 447                return -ENOMEM;
 448
 449        pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
 450
 451        for (i = 0; i < wowlan->n_patterns; i++) {
 452                int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
 453
 454                pattern_cmd->patterns[i].pattern_type =
 455                        WOWLAN_PATTERN_TYPE_BITMASK;
 456
 457                memcpy(&pattern_cmd->patterns[i].u.bitmask.mask,
 458                       wowlan->patterns[i].mask, mask_len);
 459                memcpy(&pattern_cmd->patterns[i].u.bitmask.pattern,
 460                       wowlan->patterns[i].pattern,
 461                       wowlan->patterns[i].pattern_len);
 462                pattern_cmd->patterns[i].u.bitmask.mask_size = mask_len;
 463                pattern_cmd->patterns[i].u.bitmask.pattern_size =
 464                        wowlan->patterns[i].pattern_len;
 465        }
 466
 467        cmd.data[0] = pattern_cmd;
 468        err = iwl_mvm_send_cmd(mvm, &cmd);
 469        kfree(pattern_cmd);
 470        return err;
 471}
 472
 473static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 474                                struct ieee80211_sta *ap_sta)
 475{
 476        struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 477        struct ieee80211_chanctx_conf *ctx;
 478        u8 chains_static, chains_dynamic;
 479        struct cfg80211_chan_def chandef;
 480        int ret, i;
 481        struct iwl_binding_cmd_v1 binding_cmd = {};
 482        struct iwl_time_quota_cmd quota_cmd = {};
 483        struct iwl_time_quota_data *quota;
 484        u32 status;
 485
 486        if (WARN_ON_ONCE(iwl_mvm_is_cdb_supported(mvm)))
 487                return -EINVAL;
 488
 489        /* add back the PHY */
 490        if (WARN_ON(!mvmvif->phy_ctxt))
 491                return -EINVAL;
 492
 493        rcu_read_lock();
 494        ctx = rcu_dereference(vif->chanctx_conf);
 495        if (WARN_ON(!ctx)) {
 496                rcu_read_unlock();
 497                return -EINVAL;
 498        }
 499        chandef = ctx->def;
 500        chains_static = ctx->rx_chains_static;
 501        chains_dynamic = ctx->rx_chains_dynamic;
 502        rcu_read_unlock();
 503
 504        ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt, &chandef,
 505                                   chains_static, chains_dynamic);
 506        if (ret)
 507                return ret;
 508
 509        /* add back the MAC */
 510        mvmvif->uploaded = false;
 511
 512        if (WARN_ON(!vif->bss_conf.assoc))
 513                return -EINVAL;
 514
 515        ret = iwl_mvm_mac_ctxt_add(mvm, vif);
 516        if (ret)
 517                return ret;
 518
 519        /* add back binding - XXX refactor? */
 520        binding_cmd.id_and_color =
 521                cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
 522                                                mvmvif->phy_ctxt->color));
 523        binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD);
 524        binding_cmd.phy =
 525                cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
 526                                                mvmvif->phy_ctxt->color));
 527        binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
 528                                                              mvmvif->color));
 529        for (i = 1; i < MAX_MACS_IN_BINDING; i++)
 530                binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID);
 531
 532        status = 0;
 533        ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD,
 534                                          IWL_BINDING_CMD_SIZE_V1, &binding_cmd,
 535                                          &status);
 536        if (ret) {
 537                IWL_ERR(mvm, "Failed to add binding: %d\n", ret);
 538                return ret;
 539        }
 540
 541        if (status) {
 542                IWL_ERR(mvm, "Binding command failed: %u\n", status);
 543                return -EIO;
 544        }
 545
 546        ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false, 0);
 547        if (ret)
 548                return ret;
 549        rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], ap_sta);
 550
 551        ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
 552        if (ret)
 553                return ret;
 554
 555        /* and some quota */
 556        quota = iwl_mvm_quota_cmd_get_quota(mvm, &quota_cmd, 0);
 557        quota->id_and_color =
 558                cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
 559                                                mvmvif->phy_ctxt->color));
 560        quota->quota = cpu_to_le32(IWL_MVM_MAX_QUOTA);
 561        quota->max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA);
 562
 563        for (i = 1; i < MAX_BINDINGS; i++) {
 564                quota = iwl_mvm_quota_cmd_get_quota(mvm, &quota_cmd, i);
 565                quota->id_and_color = cpu_to_le32(FW_CTXT_INVALID);
 566        }
 567
 568        ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0,
 569                                   iwl_mvm_quota_cmd_size(mvm), &quota_cmd);
 570        if (ret)
 571                IWL_ERR(mvm, "Failed to send quota: %d\n", ret);
 572
 573        if (iwl_mvm_is_lar_supported(mvm) && iwl_mvm_init_fw_regd(mvm))
 574                IWL_ERR(mvm, "Failed to initialize D3 LAR information\n");
 575
 576        return 0;
 577}
 578
 579static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm,
 580                                       struct ieee80211_vif *vif)
 581{
 582        struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 583        struct iwl_nonqos_seq_query_cmd query_cmd = {
 584                .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET),
 585                .mac_id_n_color =
 586                        cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
 587                                                        mvmvif->color)),
 588        };
 589        struct iwl_host_cmd cmd = {
 590                .id = NON_QOS_TX_COUNTER_CMD,
 591                .flags = CMD_WANT_SKB,
 592        };
 593        int err;
 594        u32 size;
 595
 596        cmd.data[0] = &query_cmd;
 597        cmd.len[0] = sizeof(query_cmd);
 598
 599        err = iwl_mvm_send_cmd(mvm, &cmd);
 600        if (err)
 601                return err;
 602
 603        size = iwl_rx_packet_payload_len(cmd.resp_pkt);
 604        if (size < sizeof(__le16)) {
 605                err = -EINVAL;
 606        } else {
 607                err = le16_to_cpup((__le16 *)cmd.resp_pkt->data);
 608                /* firmware returns next, not last-used seqno */
 609                err = (u16) (err - 0x10);
 610        }
 611
 612        iwl_free_resp(&cmd);
 613        return err;
 614}
 615
 616void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
 617{
 618        struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 619        struct iwl_nonqos_seq_query_cmd query_cmd = {
 620                .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET),
 621                .mac_id_n_color =
 622                        cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
 623                                                        mvmvif->color)),
 624                .value = cpu_to_le16(mvmvif->seqno),
 625        };
 626
 627        /* return if called during restart, not resume from D3 */
 628        if (!mvmvif->seqno_valid)
 629                return;
 630
 631        mvmvif->seqno_valid = false;
 632
 633        if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0,
 634                                 sizeof(query_cmd), &query_cmd))
 635                IWL_ERR(mvm, "failed to set non-QoS seqno\n");
 636}
 637
 638static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm)
 639{
 640        iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
 641
 642        iwl_mvm_stop_device(mvm);
 643        /*
 644         * Set the HW restart bit -- this is mostly true as we're
 645         * going to load new firmware and reprogram that, though
 646         * the reprogramming is going to be manual to avoid adding
 647         * all the MACs that aren't support.
 648         * We don't have to clear up everything though because the
 649         * reprogramming is manual. When we resume, we'll actually
 650         * go through a proper restart sequence again to switch
 651         * back to the runtime firmware image.
 652         */
 653        set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
 654
 655        /* the fw is reset, so all the keys are cleared */
 656        memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
 657
 658        mvm->ptk_ivlen = 0;
 659        mvm->ptk_icvlen = 0;
 660        mvm->ptk_ivlen = 0;
 661        mvm->ptk_icvlen = 0;
 662
 663        return iwl_mvm_load_d3_fw(mvm);
 664}
 665
 666static int
 667iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm,
 668                          struct cfg80211_wowlan *wowlan,
 669                          struct iwl_wowlan_config_cmd *wowlan_config_cmd,
 670                          struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
 671                          struct ieee80211_sta *ap_sta)
 672{
 673        int ret;
 674        struct iwl_mvm_sta *mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
 675
 676        /* TODO: wowlan_config_cmd->wowlan_ba_teardown_tids */
 677
 678        wowlan_config_cmd->is_11n_connection =
 679                                        ap_sta->ht_cap.ht_supported;
 680        wowlan_config_cmd->flags = ENABLE_L3_FILTERING |
 681                ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING;
 682
 683        /* Query the last used seqno and set it */
 684        ret = iwl_mvm_get_last_nonqos_seq(mvm, vif);
 685        if (ret < 0)
 686                return ret;
 687
 688        wowlan_config_cmd->non_qos_seq = cpu_to_le16(ret);
 689
 690        iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, wowlan_config_cmd);
 691
 692        if (wowlan->disconnect)
 693                wowlan_config_cmd->wakeup_filter |=
 694                        cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
 695                                    IWL_WOWLAN_WAKEUP_LINK_CHANGE);
 696        if (wowlan->magic_pkt)
 697                wowlan_config_cmd->wakeup_filter |=
 698                        cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET);
 699        if (wowlan->gtk_rekey_failure)
 700                wowlan_config_cmd->wakeup_filter |=
 701                        cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
 702        if (wowlan->eap_identity_req)
 703                wowlan_config_cmd->wakeup_filter |=
 704                        cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ);
 705        if (wowlan->four_way_handshake)
 706                wowlan_config_cmd->wakeup_filter |=
 707                        cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
 708        if (wowlan->n_patterns)
 709                wowlan_config_cmd->wakeup_filter |=
 710                        cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH);
 711
 712        if (wowlan->rfkill_release)
 713                wowlan_config_cmd->wakeup_filter |=
 714                        cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
 715
 716        if (wowlan->tcp) {
 717                /*
 718                 * Set the "link change" (really "link lost") flag as well
 719                 * since that implies losing the TCP connection.
 720                 */
 721                wowlan_config_cmd->wakeup_filter |=
 722                        cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS |
 723                                    IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE |
 724                                    IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET |
 725                                    IWL_WOWLAN_WAKEUP_LINK_CHANGE);
 726        }
 727
 728        if (wowlan->any) {
 729                wowlan_config_cmd->wakeup_filter |=
 730                        cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
 731                                    IWL_WOWLAN_WAKEUP_LINK_CHANGE |
 732                                    IWL_WOWLAN_WAKEUP_RX_FRAME |
 733                                    IWL_WOWLAN_WAKEUP_BCN_FILTERING);
 734        }
 735
 736        return 0;
 737}
 738
 739static void
 740iwl_mvm_iter_d0i3_ap_keys(struct iwl_mvm *mvm,
 741                          struct ieee80211_vif *vif,
 742                          void (*iter)(struct ieee80211_hw *hw,
 743                                       struct ieee80211_vif *vif,
 744                                       struct ieee80211_sta *sta,
 745                                       struct ieee80211_key_conf *key,
 746                                       void *data),
 747                          void *data)
 748{
 749        struct ieee80211_sta *ap_sta;
 750
 751        rcu_read_lock();
 752
 753        ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id]);
 754        if (IS_ERR_OR_NULL(ap_sta))
 755                goto out;
 756
 757        ieee80211_iter_keys_rcu(mvm->hw, vif, iter, data);
 758out:
 759        rcu_read_unlock();
 760}
 761
 762int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm,
 763                                     struct ieee80211_vif *vif,
 764                                     bool d0i3,
 765                                     u32 cmd_flags)
 766{
 767        struct iwl_wowlan_kek_kck_material_cmd kek_kck_cmd = {};
 768        struct iwl_wowlan_tkip_params_cmd tkip_cmd = {};
 769        bool unified = fw_has_capa(&mvm->fw->ucode_capa,
 770                                   IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
 771        struct wowlan_key_data key_data = {
 772                .configure_keys = !d0i3 && !unified,
 773                .use_rsc_tsc = false,
 774                .tkip = &tkip_cmd,
 775                .use_tkip = false,
 776        };
 777        struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 778        int ret;
 779
 780        key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
 781        if (!key_data.rsc_tsc)
 782                return -ENOMEM;
 783
 784        /*
 785         * if we have to configure keys, call ieee80211_iter_keys(),
 786         * as we need non-atomic context in order to take the
 787         * required locks.
 788         * for the d0i3 we can't use ieee80211_iter_keys(), as
 789         * taking (almost) any mutex might result in deadlock.
 790         */
 791        if (!d0i3) {
 792                /*
 793                 * Note that currently we don't propagate cmd_flags
 794                 * to the iterator. In case of key_data.configure_keys,
 795                 * all the configured commands are SYNC, and
 796                 * iwl_mvm_wowlan_program_keys() will take care of
 797                 * locking/unlocking mvm->mutex.
 798                 */
 799                ieee80211_iter_keys(mvm->hw, vif,
 800                                    iwl_mvm_wowlan_program_keys,
 801                                    &key_data);
 802        } else {
 803                iwl_mvm_iter_d0i3_ap_keys(mvm, vif,
 804                                          iwl_mvm_wowlan_program_keys,
 805                                          &key_data);
 806        }
 807
 808        if (key_data.error) {
 809                ret = -EIO;
 810                goto out;
 811        }
 812
 813        if (key_data.use_rsc_tsc) {
 814                ret = iwl_mvm_send_cmd_pdu(mvm,
 815                                           WOWLAN_TSC_RSC_PARAM, cmd_flags,
 816                                           sizeof(*key_data.rsc_tsc),
 817                                           key_data.rsc_tsc);
 818                if (ret)
 819                        goto out;
 820        }
 821
 822        if (key_data.use_tkip &&
 823            !fw_has_api(&mvm->fw->ucode_capa,
 824                        IWL_UCODE_TLV_API_TKIP_MIC_KEYS)) {
 825                ret = iwl_mvm_send_cmd_pdu(mvm,
 826                                           WOWLAN_TKIP_PARAM,
 827                                           cmd_flags, sizeof(tkip_cmd),
 828                                           &tkip_cmd);
 829                if (ret)
 830                        goto out;
 831        }
 832
 833        /* configure rekey data only if offloaded rekey is supported (d3) */
 834        if (mvmvif->rekey_data.valid && !d0i3) {
 835                memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
 836                memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck,
 837                       NL80211_KCK_LEN);
 838                kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
 839                memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek,
 840                       NL80211_KEK_LEN);
 841                kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
 842                kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr;
 843
 844                ret = iwl_mvm_send_cmd_pdu(mvm,
 845                                           WOWLAN_KEK_KCK_MATERIAL, cmd_flags,
 846                                           sizeof(kek_kck_cmd),
 847                                           &kek_kck_cmd);
 848                if (ret)
 849                        goto out;
 850        }
 851        ret = 0;
 852out:
 853        kfree(key_data.rsc_tsc);
 854        return ret;
 855}
 856
 857static int
 858iwl_mvm_wowlan_config(struct iwl_mvm *mvm,
 859                      struct cfg80211_wowlan *wowlan,
 860                      struct iwl_wowlan_config_cmd *wowlan_config_cmd,
 861                      struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
 862                      struct ieee80211_sta *ap_sta)
 863{
 864        int ret;
 865        bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
 866                                         IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
 867
 868        if (!unified_image) {
 869                ret = iwl_mvm_switch_to_d3(mvm);
 870                if (ret)
 871                        return ret;
 872
 873                ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta);
 874                if (ret)
 875                        return ret;
 876        }
 877
 878        if (!iwlwifi_mod_params.swcrypto) {
 879                /*
 880                 * This needs to be unlocked due to lock ordering
 881                 * constraints. Since we're in the suspend path
 882                 * that isn't really a problem though.
 883                 */
 884                mutex_unlock(&mvm->mutex);
 885                ret = iwl_mvm_wowlan_config_key_params(mvm, vif, false,
 886                                                       CMD_ASYNC);
 887                mutex_lock(&mvm->mutex);
 888                if (ret)
 889                        return ret;
 890        }
 891
 892        ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0,
 893                                   sizeof(*wowlan_config_cmd),
 894                                   wowlan_config_cmd);
 895        if (ret)
 896                return ret;
 897
 898        if (fw_has_api(&mvm->fw->ucode_capa,
 899                       IWL_UCODE_TLV_API_WOWLAN_TCP_SYN_WAKE))
 900                ret = iwl_mvm_send_patterns(mvm, wowlan);
 901        else
 902                ret = iwl_mvm_send_patterns_v1(mvm, wowlan);
 903        if (ret)
 904                return ret;
 905
 906        return iwl_mvm_send_proto_offload(mvm, vif, false, true, 0);
 907}
 908
 909static int
 910iwl_mvm_netdetect_config(struct iwl_mvm *mvm,
 911                         struct cfg80211_wowlan *wowlan,
 912                         struct cfg80211_sched_scan_request *nd_config,
 913                         struct ieee80211_vif *vif)
 914{
 915        struct iwl_wowlan_config_cmd wowlan_config_cmd = {};
 916        int ret;
 917        bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
 918                                         IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
 919
 920        if (!unified_image) {
 921                ret = iwl_mvm_switch_to_d3(mvm);
 922                if (ret)
 923                        return ret;
 924        } else {
 925                /* In theory, we wouldn't have to stop a running sched
 926                 * scan in order to start another one (for
 927                 * net-detect).  But in practice this doesn't seem to
 928                 * work properly, so stop any running sched_scan now.
 929                 */
 930                ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
 931                if (ret)
 932                        return ret;
 933        }
 934
 935        /* rfkill release can be either for wowlan or netdetect */
 936        if (wowlan->rfkill_release)
 937                wowlan_config_cmd.wakeup_filter |=
 938                        cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
 939
 940        ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0,
 941                                   sizeof(wowlan_config_cmd),
 942                                   &wowlan_config_cmd);
 943        if (ret)
 944                return ret;
 945
 946        ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies,
 947                                       IWL_MVM_SCAN_NETDETECT);
 948        if (ret)
 949                return ret;
 950
 951        if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels))
 952                return -EBUSY;
 953
 954        /* save the sched scan matchsets... */
 955        if (nd_config->n_match_sets) {
 956                mvm->nd_match_sets = kmemdup(nd_config->match_sets,
 957                                             sizeof(*nd_config->match_sets) *
 958                                             nd_config->n_match_sets,
 959                                             GFP_KERNEL);
 960                if (mvm->nd_match_sets)
 961                        mvm->n_nd_match_sets = nd_config->n_match_sets;
 962        }
 963
 964        /* ...and the sched scan channels for later reporting */
 965        mvm->nd_channels = kmemdup(nd_config->channels,
 966                                   sizeof(*nd_config->channels) *
 967                                   nd_config->n_channels,
 968                                   GFP_KERNEL);
 969        if (mvm->nd_channels)
 970                mvm->n_nd_channels = nd_config->n_channels;
 971
 972        return 0;
 973}
 974
 975static void iwl_mvm_free_nd(struct iwl_mvm *mvm)
 976{
 977        kfree(mvm->nd_match_sets);
 978        mvm->nd_match_sets = NULL;
 979        mvm->n_nd_match_sets = 0;
 980        kfree(mvm->nd_channels);
 981        mvm->nd_channels = NULL;
 982        mvm->n_nd_channels = 0;
 983}
 984
 985static int __iwl_mvm_suspend(struct ieee80211_hw *hw,
 986                             struct cfg80211_wowlan *wowlan,
 987                             bool test)
 988{
 989        struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 990        struct ieee80211_vif *vif = NULL;
 991        struct iwl_mvm_vif *mvmvif = NULL;
 992        struct ieee80211_sta *ap_sta = NULL;
 993        struct iwl_d3_manager_config d3_cfg_cmd_data = {
 994                /*
 995                 * Program the minimum sleep time to 10 seconds, as many
 996                 * platforms have issues processing a wakeup signal while
 997                 * still being in the process of suspending.
 998                 */
 999                .min_sleep_time = cpu_to_le32(10 * 1000 * 1000),
1000        };
1001        struct iwl_host_cmd d3_cfg_cmd = {
1002                .id = D3_CONFIG_CMD,
1003                .flags = CMD_WANT_SKB,
1004                .data[0] = &d3_cfg_cmd_data,
1005                .len[0] = sizeof(d3_cfg_cmd_data),
1006        };
1007        int ret;
1008        int len __maybe_unused;
1009        bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1010                                         IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1011
1012        if (!wowlan) {
1013                /*
1014                 * mac80211 shouldn't get here, but for D3 test
1015                 * it doesn't warrant a warning
1016                 */
1017                WARN_ON(!test);
1018                return -EINVAL;
1019        }
1020
1021        mutex_lock(&mvm->mutex);
1022
1023        vif = iwl_mvm_get_bss_vif(mvm);
1024        if (IS_ERR_OR_NULL(vif)) {
1025                ret = 1;
1026                goto out_noreset;
1027        }
1028
1029        mvmvif = iwl_mvm_vif_from_mac80211(vif);
1030
1031        if (mvmvif->ap_sta_id == IWL_MVM_INVALID_STA) {
1032                /* if we're not associated, this must be netdetect */
1033                if (!wowlan->nd_config) {
1034                        ret = 1;
1035                        goto out_noreset;
1036                }
1037
1038                ret = iwl_mvm_netdetect_config(
1039                        mvm, wowlan, wowlan->nd_config, vif);
1040                if (ret)
1041                        goto out;
1042
1043                mvm->net_detect = true;
1044        } else {
1045                struct iwl_wowlan_config_cmd wowlan_config_cmd = {};
1046
1047                ap_sta = rcu_dereference_protected(
1048                        mvm->fw_id_to_mac_id[mvmvif->ap_sta_id],
1049                        lockdep_is_held(&mvm->mutex));
1050                if (IS_ERR_OR_NULL(ap_sta)) {
1051                        ret = -EINVAL;
1052                        goto out_noreset;
1053                }
1054
1055                ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1056                                                vif, mvmvif, ap_sta);
1057                if (ret)
1058                        goto out_noreset;
1059                ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1060                                            vif, mvmvif, ap_sta);
1061                if (ret)
1062                        goto out;
1063
1064                mvm->net_detect = false;
1065        }
1066
1067        ret = iwl_mvm_power_update_device(mvm);
1068        if (ret)
1069                goto out;
1070
1071        ret = iwl_mvm_power_update_mac(mvm);
1072        if (ret)
1073                goto out;
1074
1075#ifdef CONFIG_IWLWIFI_DEBUGFS
1076        if (mvm->d3_wake_sysassert)
1077                d3_cfg_cmd_data.wakeup_flags |=
1078                        cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR);
1079#endif
1080
1081        /*
1082         * TODO: this is needed because the firmware is not stopping
1083         * the recording automatically before entering D3.  This can
1084         * be removed once the FW starts doing that.
1085         */
1086        _iwl_fw_dbg_stop_recording(mvm->fwrt.trans, NULL);
1087
1088        /* must be last -- this switches firmware state */
1089        ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd);
1090        if (ret)
1091                goto out;
1092#ifdef CONFIG_IWLWIFI_DEBUGFS
1093        len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt);
1094        if (len >= sizeof(u32)) {
1095                mvm->d3_test_pme_ptr =
1096                        le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data);
1097        }
1098#endif
1099        iwl_free_resp(&d3_cfg_cmd);
1100
1101        clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1102
1103        iwl_trans_d3_suspend(mvm->trans, test, !unified_image);
1104 out:
1105        if (ret < 0) {
1106                iwl_mvm_free_nd(mvm);
1107
1108                if (!unified_image) {
1109                        iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1110                        if (mvm->fw_restart > 0) {
1111                                mvm->fw_restart--;
1112                                ieee80211_restart_hw(mvm->hw);
1113                        }
1114                }
1115        }
1116 out_noreset:
1117        mutex_unlock(&mvm->mutex);
1118
1119        return ret;
1120}
1121
1122static int iwl_mvm_enter_d0i3_sync(struct iwl_mvm *mvm)
1123{
1124        struct iwl_notification_wait wait_d3;
1125        static const u16 d3_notif[] = { D3_CONFIG_CMD };
1126        int ret;
1127
1128        iwl_init_notification_wait(&mvm->notif_wait, &wait_d3,
1129                                   d3_notif, ARRAY_SIZE(d3_notif),
1130                                   NULL, NULL);
1131
1132        ret = iwl_mvm_enter_d0i3(mvm->hw->priv);
1133        if (ret)
1134                goto remove_notif;
1135
1136        ret = iwl_wait_notification(&mvm->notif_wait, &wait_d3, HZ);
1137        WARN_ON_ONCE(ret);
1138        return ret;
1139
1140remove_notif:
1141        iwl_remove_notification(&mvm->notif_wait, &wait_d3);
1142        return ret;
1143}
1144
1145int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
1146{
1147        struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1148        struct iwl_trans *trans = mvm->trans;
1149        int ret;
1150
1151        /* make sure the d0i3 exit work is not pending */
1152        flush_work(&mvm->d0i3_exit_work);
1153        iwl_mvm_pause_tcm(mvm, true);
1154
1155        iwl_fw_runtime_suspend(&mvm->fwrt);
1156
1157        ret = iwl_trans_suspend(trans);
1158        if (ret)
1159                return ret;
1160
1161        if (wowlan->any) {
1162                trans->system_pm_mode = IWL_PLAT_PM_MODE_D0I3;
1163
1164                if (iwl_mvm_enter_d0i3_on_suspend(mvm)) {
1165                        ret = iwl_mvm_enter_d0i3_sync(mvm);
1166
1167                        if (ret)
1168                                return ret;
1169                }
1170
1171                mutex_lock(&mvm->d0i3_suspend_mutex);
1172                __set_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags);
1173                mutex_unlock(&mvm->d0i3_suspend_mutex);
1174
1175                iwl_trans_d3_suspend(trans, false, false);
1176
1177                return 0;
1178        }
1179
1180        trans->system_pm_mode = IWL_PLAT_PM_MODE_D3;
1181
1182        return __iwl_mvm_suspend(hw, wowlan, false);
1183}
1184
1185/* converted data from the different status responses */
1186struct iwl_wowlan_status_data {
1187        u16 pattern_number;
1188        u16 qos_seq_ctr[8];
1189        u32 wakeup_reasons;
1190        u32 wake_packet_length;
1191        u32 wake_packet_bufsize;
1192        const u8 *wake_packet;
1193};
1194
1195static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm,
1196                                          struct ieee80211_vif *vif,
1197                                          struct iwl_wowlan_status_data *status)
1198{
1199        struct sk_buff *pkt = NULL;
1200        struct cfg80211_wowlan_wakeup wakeup = {
1201                .pattern_idx = -1,
1202        };
1203        struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
1204        u32 reasons = status->wakeup_reasons;
1205
1206        if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
1207                wakeup_report = NULL;
1208                goto report;
1209        }
1210
1211        pm_wakeup_event(mvm->dev, 0);
1212
1213        if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET)
1214                wakeup.magic_pkt = true;
1215
1216        if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN)
1217                wakeup.pattern_idx =
1218                        status->pattern_number;
1219
1220        if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1221                       IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH))
1222                wakeup.disconnect = true;
1223
1224        if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)
1225                wakeup.gtk_rekey_failure = true;
1226
1227        if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
1228                wakeup.rfkill_release = true;
1229
1230        if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST)
1231                wakeup.eap_identity_req = true;
1232
1233        if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE)
1234                wakeup.four_way_handshake = true;
1235
1236        if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS)
1237                wakeup.tcp_connlost = true;
1238
1239        if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE)
1240                wakeup.tcp_nomoretokens = true;
1241
1242        if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET)
1243                wakeup.tcp_match = true;
1244
1245        if (status->wake_packet_bufsize) {
1246                int pktsize = status->wake_packet_bufsize;
1247                int pktlen = status->wake_packet_length;
1248                const u8 *pktdata = status->wake_packet;
1249                struct ieee80211_hdr *hdr = (void *)pktdata;
1250                int truncated = pktlen - pktsize;
1251
1252                /* this would be a firmware bug */
1253                if (WARN_ON_ONCE(truncated < 0))
1254                        truncated = 0;
1255
1256                if (ieee80211_is_data(hdr->frame_control)) {
1257                        int hdrlen = ieee80211_hdrlen(hdr->frame_control);
1258                        int ivlen = 0, icvlen = 4; /* also FCS */
1259
1260                        pkt = alloc_skb(pktsize, GFP_KERNEL);
1261                        if (!pkt)
1262                                goto report;
1263
1264                        skb_put_data(pkt, pktdata, hdrlen);
1265                        pktdata += hdrlen;
1266                        pktsize -= hdrlen;
1267
1268                        if (ieee80211_has_protected(hdr->frame_control)) {
1269                                /*
1270                                 * This is unlocked and using gtk_i(c)vlen,
1271                                 * but since everything is under RTNL still
1272                                 * that's not really a problem - changing
1273                                 * it would be difficult.
1274                                 */
1275                                if (is_multicast_ether_addr(hdr->addr1)) {
1276                                        ivlen = mvm->gtk_ivlen;
1277                                        icvlen += mvm->gtk_icvlen;
1278                                } else {
1279                                        ivlen = mvm->ptk_ivlen;
1280                                        icvlen += mvm->ptk_icvlen;
1281                                }
1282                        }
1283
1284                        /* if truncated, FCS/ICV is (partially) gone */
1285                        if (truncated >= icvlen) {
1286                                icvlen = 0;
1287                                truncated -= icvlen;
1288                        } else {
1289                                icvlen -= truncated;
1290                                truncated = 0;
1291                        }
1292
1293                        pktsize -= ivlen + icvlen;
1294                        pktdata += ivlen;
1295
1296                        skb_put_data(pkt, pktdata, pktsize);
1297
1298                        if (ieee80211_data_to_8023(pkt, vif->addr, vif->type))
1299                                goto report;
1300                        wakeup.packet = pkt->data;
1301                        wakeup.packet_present_len = pkt->len;
1302                        wakeup.packet_len = pkt->len - truncated;
1303                        wakeup.packet_80211 = false;
1304                } else {
1305                        int fcslen = 4;
1306
1307                        if (truncated >= 4) {
1308                                truncated -= 4;
1309                                fcslen = 0;
1310                        } else {
1311                                fcslen -= truncated;
1312                                truncated = 0;
1313                        }
1314                        pktsize -= fcslen;
1315                        wakeup.packet = status->wake_packet;
1316                        wakeup.packet_present_len = pktsize;
1317                        wakeup.packet_len = pktlen - truncated;
1318                        wakeup.packet_80211 = true;
1319                }
1320        }
1321
1322 report:
1323        ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
1324        kfree_skb(pkt);
1325}
1326
1327static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc,
1328                                  struct ieee80211_key_seq *seq)
1329{
1330        u64 pn;
1331
1332        pn = le64_to_cpu(sc->pn);
1333        seq->ccmp.pn[0] = pn >> 40;
1334        seq->ccmp.pn[1] = pn >> 32;
1335        seq->ccmp.pn[2] = pn >> 24;
1336        seq->ccmp.pn[3] = pn >> 16;
1337        seq->ccmp.pn[4] = pn >> 8;
1338        seq->ccmp.pn[5] = pn;
1339}
1340
1341static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc,
1342                                   struct ieee80211_key_seq *seq)
1343{
1344        seq->tkip.iv32 = le32_to_cpu(sc->iv32);
1345        seq->tkip.iv16 = le16_to_cpu(sc->iv16);
1346}
1347
1348static void iwl_mvm_set_aes_rx_seq(struct iwl_mvm *mvm, struct aes_sc *scs,
1349                                   struct ieee80211_sta *sta,
1350                                   struct ieee80211_key_conf *key)
1351{
1352        int tid;
1353
1354        BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS);
1355
1356        if (sta && iwl_mvm_has_new_rx_api(mvm)) {
1357                struct iwl_mvm_sta *mvmsta;
1358                struct iwl_mvm_key_pn *ptk_pn;
1359
1360                mvmsta = iwl_mvm_sta_from_mac80211(sta);
1361
1362                ptk_pn = rcu_dereference_protected(mvmsta->ptk_pn[key->keyidx],
1363                                                   lockdep_is_held(&mvm->mutex));
1364                if (WARN_ON(!ptk_pn))
1365                        return;
1366
1367                for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1368                        struct ieee80211_key_seq seq = {};
1369                        int i;
1370
1371                        iwl_mvm_aes_sc_to_seq(&scs[tid], &seq);
1372                        ieee80211_set_key_rx_seq(key, tid, &seq);
1373                        for (i = 1; i < mvm->trans->num_rx_queues; i++)
1374                                memcpy(ptk_pn->q[i].pn[tid],
1375                                       seq.ccmp.pn, IEEE80211_CCMP_PN_LEN);
1376                }
1377        } else {
1378                for (tid = 0; tid < IWL_NUM_RSC; tid++) {
1379                        struct ieee80211_key_seq seq = {};
1380
1381                        iwl_mvm_aes_sc_to_seq(&scs[tid], &seq);
1382                        ieee80211_set_key_rx_seq(key, tid, &seq);
1383                }
1384        }
1385}
1386
1387static void iwl_mvm_set_tkip_rx_seq(struct tkip_sc *scs,
1388                                    struct ieee80211_key_conf *key)
1389{
1390        int tid;
1391
1392        BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS);
1393
1394        for (tid = 0; tid < IWL_NUM_RSC; tid++) {
1395                struct ieee80211_key_seq seq = {};
1396
1397                iwl_mvm_tkip_sc_to_seq(&scs[tid], &seq);
1398                ieee80211_set_key_rx_seq(key, tid, &seq);
1399        }
1400}
1401
1402static void iwl_mvm_set_key_rx_seq(struct iwl_mvm *mvm,
1403                                   struct ieee80211_key_conf *key,
1404                                   struct iwl_wowlan_status *status)
1405{
1406        union iwl_all_tsc_rsc *rsc = &status->gtk[0].rsc.all_tsc_rsc;
1407
1408        switch (key->cipher) {
1409        case WLAN_CIPHER_SUITE_CCMP:
1410                iwl_mvm_set_aes_rx_seq(mvm, rsc->aes.multicast_rsc, NULL, key);
1411                break;
1412        case WLAN_CIPHER_SUITE_TKIP:
1413                iwl_mvm_set_tkip_rx_seq(rsc->tkip.multicast_rsc, key);
1414                break;
1415        default:
1416                WARN_ON(1);
1417        }
1418}
1419
1420struct iwl_mvm_d3_gtk_iter_data {
1421        struct iwl_mvm *mvm;
1422        struct iwl_wowlan_status *status;
1423        void *last_gtk;
1424        u32 cipher;
1425        bool find_phase, unhandled_cipher;
1426        int num_keys;
1427};
1428
1429static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw,
1430                                   struct ieee80211_vif *vif,
1431                                   struct ieee80211_sta *sta,
1432                                   struct ieee80211_key_conf *key,
1433                                   void *_data)
1434{
1435        struct iwl_mvm_d3_gtk_iter_data *data = _data;
1436
1437        if (data->unhandled_cipher)
1438                return;
1439
1440        switch (key->cipher) {
1441        case WLAN_CIPHER_SUITE_WEP40:
1442        case WLAN_CIPHER_SUITE_WEP104:
1443                /* ignore WEP completely, nothing to do */
1444                return;
1445        case WLAN_CIPHER_SUITE_CCMP:
1446        case WLAN_CIPHER_SUITE_TKIP:
1447                /* we support these */
1448                break;
1449        default:
1450                /* everything else (even CMAC for MFP) - disconnect from AP */
1451                data->unhandled_cipher = true;
1452                return;
1453        }
1454
1455        data->num_keys++;
1456
1457        /*
1458         * pairwise key - update sequence counters only;
1459         * note that this assumes no TDLS sessions are active
1460         */
1461        if (sta) {
1462                struct ieee80211_key_seq seq = {};
1463                union iwl_all_tsc_rsc *sc =
1464                        &data->status->gtk[0].rsc.all_tsc_rsc;
1465
1466                if (data->find_phase)
1467                        return;
1468
1469                switch (key->cipher) {
1470                case WLAN_CIPHER_SUITE_CCMP:
1471                        iwl_mvm_set_aes_rx_seq(data->mvm, sc->aes.unicast_rsc,
1472                                               sta, key);
1473                        atomic64_set(&key->tx_pn, le64_to_cpu(sc->aes.tsc.pn));
1474                        break;
1475                case WLAN_CIPHER_SUITE_TKIP:
1476                        iwl_mvm_tkip_sc_to_seq(&sc->tkip.tsc, &seq);
1477                        iwl_mvm_set_tkip_rx_seq(sc->tkip.unicast_rsc, key);
1478                        atomic64_set(&key->tx_pn,
1479                                     (u64)seq.tkip.iv16 |
1480                                     ((u64)seq.tkip.iv32 << 16));
1481                        break;
1482                }
1483
1484                /* that's it for this key */
1485                return;
1486        }
1487
1488        if (data->find_phase) {
1489                data->last_gtk = key;
1490                data->cipher = key->cipher;
1491                return;
1492        }
1493
1494        if (data->status->num_of_gtk_rekeys)
1495                ieee80211_remove_key(key);
1496        else if (data->last_gtk == key)
1497                iwl_mvm_set_key_rx_seq(data->mvm, key, data->status);
1498}
1499
1500static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm,
1501                                          struct ieee80211_vif *vif,
1502                                          struct iwl_wowlan_status *status)
1503{
1504        struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1505        struct iwl_mvm_d3_gtk_iter_data gtkdata = {
1506                .mvm = mvm,
1507                .status = status,
1508        };
1509        u32 disconnection_reasons =
1510                IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1511                IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH;
1512
1513        if (!status || !vif->bss_conf.bssid)
1514                return false;
1515
1516        if (le32_to_cpu(status->wakeup_reasons) & disconnection_reasons)
1517                return false;
1518
1519        /* find last GTK that we used initially, if any */
1520        gtkdata.find_phase = true;
1521        ieee80211_iter_keys(mvm->hw, vif,
1522                            iwl_mvm_d3_update_keys, &gtkdata);
1523        /* not trying to keep connections with MFP/unhandled ciphers */
1524        if (gtkdata.unhandled_cipher)
1525                return false;
1526        if (!gtkdata.num_keys)
1527                goto out;
1528        if (!gtkdata.last_gtk)
1529                return false;
1530
1531        /*
1532         * invalidate all other GTKs that might still exist and update
1533         * the one that we used
1534         */
1535        gtkdata.find_phase = false;
1536        ieee80211_iter_keys(mvm->hw, vif,
1537                            iwl_mvm_d3_update_keys, &gtkdata);
1538
1539        if (status->num_of_gtk_rekeys) {
1540                struct ieee80211_key_conf *key;
1541                struct {
1542                        struct ieee80211_key_conf conf;
1543                        u8 key[32];
1544                } conf = {
1545                        .conf.cipher = gtkdata.cipher,
1546                        .conf.keyidx =
1547                                iwlmvm_wowlan_gtk_idx(&status->gtk[0]),
1548                };
1549                __be64 replay_ctr;
1550
1551                switch (gtkdata.cipher) {
1552                case WLAN_CIPHER_SUITE_CCMP:
1553                        conf.conf.keylen = WLAN_KEY_LEN_CCMP;
1554                        memcpy(conf.conf.key, status->gtk[0].key,
1555                               WLAN_KEY_LEN_CCMP);
1556                        break;
1557                case WLAN_CIPHER_SUITE_TKIP:
1558                        conf.conf.keylen = WLAN_KEY_LEN_TKIP;
1559                        memcpy(conf.conf.key, status->gtk[0].key, 16);
1560                        /* leave TX MIC key zeroed, we don't use it anyway */
1561                        memcpy(conf.conf.key +
1562                               NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
1563                               status->gtk[0].tkip_mic_key, 8);
1564                        break;
1565                }
1566
1567                key = ieee80211_gtk_rekey_add(vif, &conf.conf);
1568                if (IS_ERR(key))
1569                        return false;
1570                iwl_mvm_set_key_rx_seq(mvm, key, status);
1571
1572                replay_ctr =
1573                        cpu_to_be64(le64_to_cpu(status->replay_ctr));
1574
1575                ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid,
1576                                           (void *)&replay_ctr, GFP_KERNEL);
1577        }
1578
1579out:
1580        mvmvif->seqno_valid = true;
1581        /* +0x10 because the set API expects next-to-use, not last-used */
1582        mvmvif->seqno = le16_to_cpu(status->non_qos_seq_ctr) + 0x10;
1583
1584        return true;
1585}
1586
1587struct iwl_wowlan_status *iwl_mvm_send_wowlan_get_status(struct iwl_mvm *mvm)
1588{
1589        struct iwl_wowlan_status *v7, *status;
1590        struct iwl_host_cmd cmd = {
1591                .id = WOWLAN_GET_STATUSES,
1592                .flags = CMD_WANT_SKB,
1593        };
1594        int ret, len, status_size;
1595
1596        lockdep_assert_held(&mvm->mutex);
1597
1598        ret = iwl_mvm_send_cmd(mvm, &cmd);
1599        if (ret) {
1600                IWL_ERR(mvm, "failed to query wakeup status (%d)\n", ret);
1601                return ERR_PTR(ret);
1602        }
1603
1604        if (!fw_has_api(&mvm->fw->ucode_capa,
1605                        IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL)) {
1606                struct iwl_wowlan_status_v6 *v6 = (void *)cmd.resp_pkt->data;
1607                int data_size;
1608
1609                status_size = sizeof(*v6);
1610                len = iwl_rx_packet_payload_len(cmd.resp_pkt);
1611
1612                if (len < status_size) {
1613                        IWL_ERR(mvm, "Invalid WoWLAN status response!\n");
1614                        status = ERR_PTR(-EIO);
1615                        goto out_free_resp;
1616                }
1617
1618                data_size = ALIGN(le32_to_cpu(v6->wake_packet_bufsize), 4);
1619
1620                if (len != (status_size + data_size)) {
1621                        IWL_ERR(mvm, "Invalid WoWLAN status response!\n");
1622                        status = ERR_PTR(-EIO);
1623                        goto out_free_resp;
1624                }
1625
1626                status = kzalloc(sizeof(*status) + data_size, GFP_KERNEL);
1627                if (!status)
1628                        goto out_free_resp;
1629
1630                BUILD_BUG_ON(sizeof(v6->gtk.decrypt_key) >
1631                             sizeof(status->gtk[0].key));
1632                BUILD_BUG_ON(sizeof(v6->gtk.tkip_mic_key) >
1633                             sizeof(status->gtk[0].tkip_mic_key));
1634
1635                /* copy GTK info to the right place */
1636                memcpy(status->gtk[0].key, v6->gtk.decrypt_key,
1637                       sizeof(v6->gtk.decrypt_key));
1638                memcpy(status->gtk[0].tkip_mic_key, v6->gtk.tkip_mic_key,
1639                       sizeof(v6->gtk.tkip_mic_key));
1640                memcpy(&status->gtk[0].rsc, &v6->gtk.rsc,
1641                       sizeof(status->gtk[0].rsc));
1642
1643                /* hardcode the key length to 16 since v6 only supports 16 */
1644                status->gtk[0].key_len = 16;
1645
1646                /*
1647                 * The key index only uses 2 bits (values 0 to 3) and
1648                 * we always set bit 7 which means this is the
1649                 * currently used key.
1650                 */
1651                status->gtk[0].key_flags = v6->gtk.key_index | BIT(7);
1652
1653                status->replay_ctr = v6->replay_ctr;
1654
1655                /* everything starting from pattern_number is identical */
1656                memcpy(&status->pattern_number, &v6->pattern_number,
1657                       offsetof(struct iwl_wowlan_status, wake_packet) -
1658                       offsetof(struct iwl_wowlan_status, pattern_number) +
1659                       data_size);
1660
1661                goto out_free_resp;
1662        }
1663
1664        v7 = (void *)cmd.resp_pkt->data;
1665        status_size = sizeof(*v7);
1666        len = iwl_rx_packet_payload_len(cmd.resp_pkt);
1667
1668        if (len < status_size) {
1669                IWL_ERR(mvm, "Invalid WoWLAN status response!\n");
1670                status = ERR_PTR(-EIO);
1671                goto out_free_resp;
1672        }
1673
1674        if (len != (status_size +
1675                    ALIGN(le32_to_cpu(v7->wake_packet_bufsize), 4))) {
1676                IWL_ERR(mvm, "Invalid WoWLAN status response!\n");
1677                status = ERR_PTR(-EIO);
1678                goto out_free_resp;
1679        }
1680
1681        status = kmemdup(v7, len, GFP_KERNEL);
1682
1683out_free_resp:
1684        iwl_free_resp(&cmd);
1685        return status;
1686}
1687
1688static struct iwl_wowlan_status *
1689iwl_mvm_get_wakeup_status(struct iwl_mvm *mvm)
1690{
1691        int ret;
1692
1693        /* only for tracing for now */
1694        ret = iwl_mvm_send_cmd_pdu(mvm, OFFLOADS_QUERY_CMD, 0, 0, NULL);
1695        if (ret)
1696                IWL_ERR(mvm, "failed to query offload statistics (%d)\n", ret);
1697
1698        return iwl_mvm_send_wowlan_get_status(mvm);
1699}
1700
1701/* releases the MVM mutex */
1702static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm,
1703                                         struct ieee80211_vif *vif)
1704{
1705        struct iwl_wowlan_status_data status;
1706        struct iwl_wowlan_status *fw_status;
1707        int i;
1708        bool keep;
1709        struct iwl_mvm_sta *mvm_ap_sta;
1710
1711        fw_status = iwl_mvm_get_wakeup_status(mvm);
1712        if (IS_ERR_OR_NULL(fw_status))
1713                goto out_unlock;
1714
1715        status.pattern_number = le16_to_cpu(fw_status->pattern_number);
1716        for (i = 0; i < 8; i++)
1717                status.qos_seq_ctr[i] =
1718                        le16_to_cpu(fw_status->qos_seq_ctr[i]);
1719        status.wakeup_reasons = le32_to_cpu(fw_status->wakeup_reasons);
1720        status.wake_packet_length =
1721                le32_to_cpu(fw_status->wake_packet_length);
1722        status.wake_packet_bufsize =
1723                le32_to_cpu(fw_status->wake_packet_bufsize);
1724        status.wake_packet = fw_status->wake_packet;
1725
1726        /* still at hard-coded place 0 for D3 image */
1727        mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, 0);
1728        if (!mvm_ap_sta)
1729                goto out_free;
1730
1731        for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1732                u16 seq = status.qos_seq_ctr[i];
1733                /* firmware stores last-used value, we store next value */
1734                seq += 0x10;
1735                mvm_ap_sta->tid_data[i].seq_number = seq;
1736        }
1737
1738        /* now we have all the data we need, unlock to avoid mac80211 issues */
1739        mutex_unlock(&mvm->mutex);
1740
1741        iwl_mvm_report_wakeup_reasons(mvm, vif, &status);
1742
1743        keep = iwl_mvm_setup_connection_keep(mvm, vif, fw_status);
1744
1745        kfree(fw_status);
1746        return keep;
1747
1748out_free:
1749        kfree(fw_status);
1750out_unlock:
1751        mutex_unlock(&mvm->mutex);
1752        return false;
1753}
1754
1755void iwl_mvm_d0i3_update_keys(struct iwl_mvm *mvm,
1756                              struct ieee80211_vif *vif,
1757                              struct iwl_wowlan_status *status)
1758{
1759        struct iwl_mvm_d3_gtk_iter_data gtkdata = {
1760                .mvm = mvm,
1761                .status = status,
1762        };
1763
1764        /*
1765         * rekey handling requires taking locks that can't be taken now.
1766         * however, d0i3 doesn't offload rekey, so we're fine.
1767         */
1768        if (WARN_ON_ONCE(status->num_of_gtk_rekeys))
1769                return;
1770
1771        /* find last GTK that we used initially, if any */
1772        gtkdata.find_phase = true;
1773        iwl_mvm_iter_d0i3_ap_keys(mvm, vif, iwl_mvm_d3_update_keys, &gtkdata);
1774
1775        gtkdata.find_phase = false;
1776        iwl_mvm_iter_d0i3_ap_keys(mvm, vif, iwl_mvm_d3_update_keys, &gtkdata);
1777}
1778
1779#define ND_QUERY_BUF_LEN (sizeof(struct iwl_scan_offload_profile_match) * \
1780                          IWL_SCAN_MAX_PROFILES)
1781
1782struct iwl_mvm_nd_query_results {
1783        u32 matched_profiles;
1784        u8 matches[ND_QUERY_BUF_LEN];
1785};
1786
1787static int
1788iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm,
1789                                struct iwl_mvm_nd_query_results *results)
1790{
1791        struct iwl_scan_offload_profiles_query *query;
1792        struct iwl_host_cmd cmd = {
1793                .id = SCAN_OFFLOAD_PROFILES_QUERY_CMD,
1794                .flags = CMD_WANT_SKB,
1795        };
1796        int ret, len;
1797        size_t query_len, matches_len;
1798
1799        ret = iwl_mvm_send_cmd(mvm, &cmd);
1800        if (ret) {
1801                IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret);
1802                return ret;
1803        }
1804
1805        if (fw_has_api(&mvm->fw->ucode_capa,
1806                       IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
1807                query_len = sizeof(struct iwl_scan_offload_profiles_query);
1808                matches_len = sizeof(struct iwl_scan_offload_profile_match) *
1809                        IWL_SCAN_MAX_PROFILES;
1810        } else {
1811                query_len = sizeof(struct iwl_scan_offload_profiles_query_v1);
1812                matches_len = sizeof(struct iwl_scan_offload_profile_match_v1) *
1813                        IWL_SCAN_MAX_PROFILES;
1814        }
1815
1816        len = iwl_rx_packet_payload_len(cmd.resp_pkt);
1817        if (len < query_len) {
1818                IWL_ERR(mvm, "Invalid scan offload profiles query response!\n");
1819                ret = -EIO;
1820                goto out_free_resp;
1821        }
1822
1823        query = (void *)cmd.resp_pkt->data;
1824
1825        results->matched_profiles = le32_to_cpu(query->matched_profiles);
1826        memcpy(results->matches, query->matches, matches_len);
1827
1828#ifdef CONFIG_IWLWIFI_DEBUGFS
1829        mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done);
1830#endif
1831
1832out_free_resp:
1833        iwl_free_resp(&cmd);
1834        return ret;
1835}
1836
1837static int iwl_mvm_query_num_match_chans(struct iwl_mvm *mvm,
1838                                         struct iwl_mvm_nd_query_results *query,
1839                                         int idx)
1840{
1841        int n_chans = 0, i;
1842
1843        if (fw_has_api(&mvm->fw->ucode_capa,
1844                       IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
1845                struct iwl_scan_offload_profile_match *matches =
1846                        (struct iwl_scan_offload_profile_match *)query->matches;
1847
1848                for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; i++)
1849                        n_chans += hweight8(matches[idx].matching_channels[i]);
1850        } else {
1851                struct iwl_scan_offload_profile_match_v1 *matches =
1852                        (struct iwl_scan_offload_profile_match_v1 *)query->matches;
1853
1854                for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1; i++)
1855                        n_chans += hweight8(matches[idx].matching_channels[i]);
1856        }
1857
1858        return n_chans;
1859}
1860
1861static void iwl_mvm_query_set_freqs(struct iwl_mvm *mvm,
1862                                    struct iwl_mvm_nd_query_results *query,
1863                                    struct cfg80211_wowlan_nd_match *match,
1864                                    int idx)
1865{
1866        int i;
1867
1868        if (fw_has_api(&mvm->fw->ucode_capa,
1869                       IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
1870                struct iwl_scan_offload_profile_match *matches =
1871                        (struct iwl_scan_offload_profile_match *)query->matches;
1872
1873                for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; i++)
1874                        if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
1875                                match->channels[match->n_channels++] =
1876                                        mvm->nd_channels[i]->center_freq;
1877        } else {
1878                struct iwl_scan_offload_profile_match_v1 *matches =
1879                        (struct iwl_scan_offload_profile_match_v1 *)query->matches;
1880
1881                for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1 * 8; i++)
1882                        if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
1883                                match->channels[match->n_channels++] =
1884                                        mvm->nd_channels[i]->center_freq;
1885        }
1886}
1887
1888static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm,
1889                                            struct ieee80211_vif *vif)
1890{
1891        struct cfg80211_wowlan_nd_info *net_detect = NULL;
1892        struct cfg80211_wowlan_wakeup wakeup = {
1893                .pattern_idx = -1,
1894        };
1895        struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
1896        struct iwl_mvm_nd_query_results query;
1897        struct iwl_wowlan_status *fw_status;
1898        unsigned long matched_profiles;
1899        u32 reasons = 0;
1900        int i, n_matches, ret;
1901
1902        fw_status = iwl_mvm_get_wakeup_status(mvm);
1903        if (!IS_ERR_OR_NULL(fw_status)) {
1904                reasons = le32_to_cpu(fw_status->wakeup_reasons);
1905                kfree(fw_status);
1906        }
1907
1908        if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
1909                wakeup.rfkill_release = true;
1910
1911        if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS)
1912                goto out;
1913
1914        ret = iwl_mvm_netdetect_query_results(mvm, &query);
1915        if (ret || !query.matched_profiles) {
1916                wakeup_report = NULL;
1917                goto out;
1918        }
1919
1920        matched_profiles = query.matched_profiles;
1921        if (mvm->n_nd_match_sets) {
1922                n_matches = hweight_long(matched_profiles);
1923        } else {
1924                IWL_ERR(mvm, "no net detect match information available\n");
1925                n_matches = 0;
1926        }
1927
1928        net_detect = kzalloc(struct_size(net_detect, matches, n_matches),
1929                             GFP_KERNEL);
1930        if (!net_detect || !n_matches)
1931                goto out_report_nd;
1932
1933        for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) {
1934                struct cfg80211_wowlan_nd_match *match;
1935                int idx, n_channels = 0;
1936
1937                n_channels = iwl_mvm_query_num_match_chans(mvm, &query, i);
1938
1939                match = kzalloc(struct_size(match, channels, n_channels),
1940                                GFP_KERNEL);
1941                if (!match)
1942                        goto out_report_nd;
1943
1944                net_detect->matches[net_detect->n_matches++] = match;
1945
1946                /* We inverted the order of the SSIDs in the scan
1947                 * request, so invert the index here.
1948                 */
1949                idx = mvm->n_nd_match_sets - i - 1;
1950                match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len;
1951                memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid,
1952                       match->ssid.ssid_len);
1953
1954                if (mvm->n_nd_channels < n_channels)
1955                        continue;
1956
1957                iwl_mvm_query_set_freqs(mvm, &query, match, i);
1958        }
1959
1960out_report_nd:
1961        wakeup.net_detect = net_detect;
1962out:
1963        iwl_mvm_free_nd(mvm);
1964
1965        mutex_unlock(&mvm->mutex);
1966        ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
1967
1968        if (net_detect) {
1969                for (i = 0; i < net_detect->n_matches; i++)
1970                        kfree(net_detect->matches[i]);
1971                kfree(net_detect);
1972        }
1973}
1974
1975static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac,
1976                                       struct ieee80211_vif *vif)
1977{
1978        /* skip the one we keep connection on */
1979        if (data == vif)
1980                return;
1981
1982        if (vif->type == NL80211_IFTYPE_STATION)
1983                ieee80211_resume_disconnect(vif);
1984}
1985
1986static int iwl_mvm_check_rt_status(struct iwl_mvm *mvm,
1987                                   struct ieee80211_vif *vif)
1988{
1989        u32 base = mvm->trans->lmac_error_event_table[0];
1990        struct error_table_start {
1991                /* cf. struct iwl_error_event_table */
1992                u32 valid;
1993                u32 error_id;
1994        } err_info;
1995
1996        iwl_trans_read_mem_bytes(mvm->trans, base,
1997                                 &err_info, sizeof(err_info));
1998
1999        if (err_info.valid &&
2000            err_info.error_id == RF_KILL_INDICATOR_FOR_WOWLAN) {
2001                struct cfg80211_wowlan_wakeup wakeup = {
2002                        .rfkill_release = true,
2003                };
2004                ieee80211_report_wowlan_wakeup(vif, &wakeup, GFP_KERNEL);
2005        }
2006        return err_info.valid;
2007}
2008
2009static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test)
2010{
2011        struct ieee80211_vif *vif = NULL;
2012        int ret = 1;
2013        enum iwl_d3_status d3_status;
2014        bool keep = false;
2015        bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
2016                                         IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2017        bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa,
2018                                      IWL_UCODE_TLV_CAPA_D0I3_END_FIRST);
2019
2020        mutex_lock(&mvm->mutex);
2021
2022        /* get the BSS vif pointer again */
2023        vif = iwl_mvm_get_bss_vif(mvm);
2024        if (IS_ERR_OR_NULL(vif))
2025                goto err;
2026
2027        ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, !unified_image);
2028        if (ret)
2029                goto err;
2030
2031        if (d3_status != IWL_D3_STATUS_ALIVE) {
2032                IWL_INFO(mvm, "Device was reset during suspend\n");
2033                goto err;
2034        }
2035
2036        iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
2037
2038        if (iwl_mvm_check_rt_status(mvm, vif)) {
2039                set_bit(STATUS_FW_ERROR, &mvm->trans->status);
2040                iwl_mvm_dump_nic_error_log(mvm);
2041                iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert,
2042                                        false, 0);
2043                ret = 1;
2044                goto err;
2045        }
2046
2047        if (d0i3_first) {
2048                ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL);
2049                if (ret < 0) {
2050                        IWL_ERR(mvm, "Failed to send D0I3_END_CMD first (%d)\n",
2051                                ret);
2052                        goto err;
2053                }
2054        }
2055
2056        /*
2057         * Query the current location and source from the D3 firmware so we
2058         * can play it back when we re-intiailize the D0 firmware
2059         */
2060        iwl_mvm_update_changed_regdom(mvm);
2061
2062        if (!unified_image)
2063                /*  Re-configure default SAR profile */
2064                iwl_mvm_sar_select_profile(mvm, 1, 1);
2065
2066        if (mvm->net_detect) {
2067                /* If this is a non-unified image, we restart the FW,
2068                 * so no need to stop the netdetect scan.  If that
2069                 * fails, continue and try to get the wake-up reasons,
2070                 * but trigger a HW restart by keeping a failure code
2071                 * in ret.
2072                 */
2073                if (unified_image)
2074                        ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT,
2075                                                false);
2076
2077                iwl_mvm_query_netdetect_reasons(mvm, vif);
2078                /* has unlocked the mutex, so skip that */
2079                goto out;
2080        } else {
2081                keep = iwl_mvm_query_wakeup_reasons(mvm, vif);
2082#ifdef CONFIG_IWLWIFI_DEBUGFS
2083                if (keep)
2084                        mvm->keep_vif = vif;
2085#endif
2086                /* has unlocked the mutex, so skip that */
2087                goto out_iterate;
2088        }
2089
2090err:
2091        iwl_mvm_free_nd(mvm);
2092        mutex_unlock(&mvm->mutex);
2093
2094out_iterate:
2095        if (!test)
2096                ieee80211_iterate_active_interfaces_rtnl(mvm->hw,
2097                        IEEE80211_IFACE_ITER_NORMAL,
2098                        iwl_mvm_d3_disconnect_iter, keep ? vif : NULL);
2099
2100out:
2101        /* no need to reset the device in unified images, if successful */
2102        if (unified_image && !ret) {
2103                /* nothing else to do if we already sent D0I3_END_CMD */
2104                if (d0i3_first)
2105                        return 0;
2106
2107                ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL);
2108                if (!ret)
2109                        return 0;
2110        }
2111
2112        /*
2113         * Reconfigure the device in one of the following cases:
2114         * 1. We are not using a unified image
2115         * 2. We are using a unified image but had an error while exiting D3
2116         */
2117        set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
2118        /*
2119         * When switching images we return 1, which causes mac80211
2120         * to do a reconfig with IEEE80211_RECONFIG_TYPE_RESTART.
2121         * This type of reconfig calls iwl_mvm_restart_complete(),
2122         * where we unref the IWL_MVM_REF_UCODE_DOWN, so we need
2123         * to take the reference here.
2124         */
2125        iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
2126
2127        return 1;
2128}
2129
2130static int iwl_mvm_resume_d3(struct iwl_mvm *mvm)
2131{
2132        iwl_trans_resume(mvm->trans);
2133
2134        return __iwl_mvm_resume(mvm, false);
2135}
2136
2137static int iwl_mvm_resume_d0i3(struct iwl_mvm *mvm)
2138{
2139        bool exit_now;
2140        enum iwl_d3_status d3_status;
2141        struct iwl_trans *trans = mvm->trans;
2142
2143        iwl_trans_d3_resume(trans, &d3_status, false, false);
2144
2145        /*
2146         * make sure to clear D0I3_DEFER_WAKEUP before
2147         * calling iwl_trans_resume(), which might wait
2148         * for d0i3 exit completion.
2149         */
2150        mutex_lock(&mvm->d0i3_suspend_mutex);
2151        __clear_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags);
2152        exit_now = __test_and_clear_bit(D0I3_PENDING_WAKEUP,
2153                                        &mvm->d0i3_suspend_flags);
2154        mutex_unlock(&mvm->d0i3_suspend_mutex);
2155        if (exit_now) {
2156                IWL_DEBUG_RPM(mvm, "Run deferred d0i3 exit\n");
2157                _iwl_mvm_exit_d0i3(mvm);
2158        }
2159
2160        iwl_trans_resume(trans);
2161
2162        if (iwl_mvm_enter_d0i3_on_suspend(mvm)) {
2163                int ret = iwl_mvm_exit_d0i3(mvm->hw->priv);
2164
2165                if (ret)
2166                        return ret;
2167                /*
2168                 * d0i3 exit will be deferred until reconfig_complete.
2169                 * make sure there we are out of d0i3.
2170                 */
2171        }
2172        return 0;
2173}
2174
2175int iwl_mvm_resume(struct ieee80211_hw *hw)
2176{
2177        struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2178        int ret;
2179
2180        if (mvm->trans->system_pm_mode == IWL_PLAT_PM_MODE_D0I3)
2181                ret = iwl_mvm_resume_d0i3(mvm);
2182        else
2183                ret = iwl_mvm_resume_d3(mvm);
2184
2185        mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
2186
2187        iwl_mvm_resume_tcm(mvm);
2188
2189        iwl_fw_runtime_resume(&mvm->fwrt);
2190
2191        return ret;
2192}
2193
2194void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled)
2195{
2196        struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2197
2198        device_set_wakeup_enable(mvm->trans->dev, enabled);
2199}
2200
2201#ifdef CONFIG_IWLWIFI_DEBUGFS
2202static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file)
2203{
2204        struct iwl_mvm *mvm = inode->i_private;
2205        int err;
2206
2207        if (mvm->d3_test_active)
2208                return -EBUSY;
2209
2210        file->private_data = inode->i_private;
2211
2212        synchronize_net();
2213
2214        mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_D3;
2215
2216        iwl_mvm_pause_tcm(mvm, true);
2217
2218        iwl_fw_runtime_suspend(&mvm->fwrt);
2219
2220        /* start pseudo D3 */
2221        rtnl_lock();
2222        err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true);
2223        rtnl_unlock();
2224        if (err > 0)
2225                err = -EINVAL;
2226        if (err)
2227                return err;
2228
2229        mvm->d3_test_active = true;
2230        mvm->keep_vif = NULL;
2231        return 0;
2232}
2233
2234static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf,
2235                                    size_t count, loff_t *ppos)
2236{
2237        struct iwl_mvm *mvm = file->private_data;
2238        u32 pme_asserted;
2239
2240        while (true) {
2241                /* read pme_ptr if available */
2242                if (mvm->d3_test_pme_ptr) {
2243                        pme_asserted = iwl_trans_read_mem32(mvm->trans,
2244                                                mvm->d3_test_pme_ptr);
2245                        if (pme_asserted)
2246                                break;
2247                }
2248
2249                if (msleep_interruptible(100))
2250                        break;
2251        }
2252
2253        return 0;
2254}
2255
2256static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac,
2257                                              struct ieee80211_vif *vif)
2258{
2259        /* skip the one we keep connection on */
2260        if (_data == vif)
2261                return;
2262
2263        if (vif->type == NL80211_IFTYPE_STATION)
2264                ieee80211_connection_loss(vif);
2265}
2266
2267static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file)
2268{
2269        struct iwl_mvm *mvm = inode->i_private;
2270        bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
2271                                         IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2272
2273        mvm->d3_test_active = false;
2274
2275        iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
2276
2277        rtnl_lock();
2278        __iwl_mvm_resume(mvm, true);
2279        rtnl_unlock();
2280
2281        iwl_mvm_resume_tcm(mvm);
2282
2283        iwl_fw_runtime_resume(&mvm->fwrt);
2284
2285        mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
2286
2287        iwl_abort_notification_waits(&mvm->notif_wait);
2288        if (!unified_image) {
2289                int remaining_time = 10;
2290
2291                ieee80211_restart_hw(mvm->hw);
2292
2293                /* wait for restart and disconnect all interfaces */
2294                while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2295                       remaining_time > 0) {
2296                        remaining_time--;
2297                        msleep(1000);
2298                }
2299
2300                if (remaining_time == 0)
2301                        IWL_ERR(mvm, "Timed out waiting for HW restart!\n");
2302        }
2303
2304        ieee80211_iterate_active_interfaces_atomic(
2305                mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
2306                iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif);
2307
2308        return 0;
2309}
2310
2311const struct file_operations iwl_dbgfs_d3_test_ops = {
2312        .llseek = no_llseek,
2313        .open = iwl_mvm_d3_test_open,
2314        .read = iwl_mvm_d3_test_read,
2315        .release = iwl_mvm_d3_test_release,
2316};
2317#endif
2318