drivers/net/wireless/iwlwifi/dvm/mac80211.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2013 Intel Corporation. All rights reserved.
   4  *
   5  * Portions of this file are derived from the ipw3945 project, as well
   6  * as portions of the ieee80211 subsystem header files.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of version 2 of the GNU General Public License as
  10  * published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  20  *
  21  * The full GNU General Public License is included in this distribution in the
  22  * file called LICENSE.
  23  *
  24  * Contact Information:
  25  *  Intel Linux Wireless <ilw@linux.intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *
  28  *****************************************************************************/
  29 #include <linux/kernel.h>
  30 #include <linux/module.h>
  31 #include <linux/init.h>
  32 #include <linux/slab.h>
  33 #include <linux/dma-mapping.h>
  34 #include <linux/delay.h>
  35 #include <linux/sched.h>
  36 #include <linux/skbuff.h>
  37 #include <linux/netdevice.h>
  38 #include <linux/etherdevice.h>
  39 #include <linux/if_arp.h>
  40
  41 #include <net/ieee80211_radiotap.h>
  42 #include <net/mac80211.h>
  43
  44 #include <asm/div64.h>
  45
  46 #include "iwl-io.h"
  47 #include "iwl-trans.h"
  48 #include "iwl-op-mode.h"
  49 #include "iwl-modparams.h"
  50
  51 #include "dev.h"
  52 #include "calib.h"
  53 #include "agn.h"
  54
  55 /*****************************************************************************
  56  *
  57  * mac80211 entry point functions
  58  *
  59  *****************************************************************************/
  60
  61 static const struct ieee80211_iface_limit iwlagn_sta_ap_limits[] = {
  62         {
  63                 .max = 1,
  64                 .types = BIT(NL80211_IFTYPE_STATION),
  65         },
  66         {
  67                 .max = 1,
  68                 .types = BIT(NL80211_IFTYPE_AP),
  69         },
  70 };
  71
  72 static const struct ieee80211_iface_limit iwlagn_2sta_limits[] = {
  73         {
  74                 .max = 2,
  75                 .types = BIT(NL80211_IFTYPE_STATION),
  76         },
  77 };
  78
  79 static const struct ieee80211_iface_limit iwlagn_p2p_sta_go_limits[] = {
  80         {
  81                 .max = 1,
  82                 .types = BIT(NL80211_IFTYPE_STATION),
  83         },
  84         {
  85                 .max = 1,
  86                 .types = BIT(NL80211_IFTYPE_P2P_GO) |
  87                          BIT(NL80211_IFTYPE_AP),
  88         },
  89 };
  90
  91 static const struct ieee80211_iface_limit iwlagn_p2p_2sta_limits[] = {
  92         {
  93                 .max = 2,
  94                 .types = BIT(NL80211_IFTYPE_STATION),
  95         },
  96         {
  97                 .max = 1,
  98                 .types = BIT(NL80211_IFTYPE_P2P_CLIENT),
  99         },
 100 };
 101
 102 static const struct ieee80211_iface_combination
 103 iwlagn_iface_combinations_dualmode[] = {
 104         { .num_different_channels = 1,
 105           .max_interfaces = 2,
 106           .beacon_int_infra_match = true,
 107           .limits = iwlagn_sta_ap_limits,
 108           .n_limits = ARRAY_SIZE(iwlagn_sta_ap_limits),
 109         },
 110         { .num_different_channels = 1,
 111           .max_interfaces = 2,
 112           .limits = iwlagn_2sta_limits,
 113           .n_limits = ARRAY_SIZE(iwlagn_2sta_limits),
 114         },
 115 };
 116
 117 static const struct ieee80211_iface_combination
 118 iwlagn_iface_combinations_p2p[] = {
 119         { .num_different_channels = 1,
 120           .max_interfaces = 2,
 121           .beacon_int_infra_match = true,
 122           .limits = iwlagn_p2p_sta_go_limits,
 123           .n_limits = ARRAY_SIZE(iwlagn_p2p_sta_go_limits),
 124         },
 125         { .num_different_channels = 1,
 126           .max_interfaces = 2,
 127           .limits = iwlagn_p2p_2sta_limits,
 128           .n_limits = ARRAY_SIZE(iwlagn_p2p_2sta_limits),
 129         },
 130 };
 131
 132 /*
 133  * Not a mac80211 entry point function, but it fits in with all the
 134  * other mac80211 functions grouped here.
 135  */
 136 int iwlagn_mac_setup_register(struct iwl_priv *priv,
 137                               const struct iwl_ucode_capabilities *capa)
 138 {
 139         int ret;
 140         struct ieee80211_hw *hw = priv->hw;
 141         struct iwl_rxon_context *ctx;
 142
 143         hw->rate_control_algorithm = "iwl-agn-rs";
 144
 145         /* Tell mac80211 our characteristics */
 146         hw->flags = IEEE80211_HW_SIGNAL_DBM |
 147                     IEEE80211_HW_AMPDU_AGGREGATION |
 148                     IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC |
 149                     IEEE80211_HW_SPECTRUM_MGMT |
 150                     IEEE80211_HW_REPORTS_TX_ACK_STATUS |
 151                     IEEE80211_HW_QUEUE_CONTROL |
 152                     IEEE80211_HW_SUPPORTS_PS |
 153                     IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
 154                     IEEE80211_HW_WANT_MONITOR_VIF;
 155
 156         hw->offchannel_tx_hw_queue = IWL_AUX_QUEUE;
 157         hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FMT;
 158
 159         /*
 160          * Including the following line will crash some AP's.  This
 161          * workaround removes the stimulus which causes the crash until
 162          * the AP software can be fixed.
 163         hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
 164          */
 165
 166         if (priv->nvm_data->sku_cap_11n_enable)
 167                 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
 168                              IEEE80211_HW_SUPPORTS_STATIC_SMPS;
 169
 170         /*
 171          * Enable 11w if advertised by firmware and software crypto
 172          * is not enabled (as the firmware will interpret some mgmt
 173          * packets, so enabling it with software crypto isn't safe)
 174          */
 175         if (priv->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
 176             !iwlwifi_mod_params.sw_crypto)
 177                 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
 178
 179         hw->sta_data_size = sizeof(struct iwl_station_priv);
 180         hw->vif_data_size = sizeof(struct iwl_vif_priv);
 181
 182         for_each_context(priv, ctx) {
 183                 hw->wiphy->interface_modes |= ctx->interface_modes;
 184                 hw->wiphy->interface_modes |= ctx->exclusive_interface_modes;
 185         }
 186
 187         BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
 188
 189         if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)) {
 190                 hw->wiphy->iface_combinations = iwlagn_iface_combinations_p2p;
 191                 hw->wiphy->n_iface_combinations =
 192                         ARRAY_SIZE(iwlagn_iface_combinations_p2p);
 193         } else if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
 194                 hw->wiphy->iface_combinations =
 195                         iwlagn_iface_combinations_dualmode;
 196                 hw->wiphy->n_iface_combinations =
 197                         ARRAY_SIZE(iwlagn_iface_combinations_dualmode);
 198         }
 199
 200         hw->wiphy->max_remain_on_channel_duration = 500;
 201
 202         hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
 203                             WIPHY_FLAG_DISABLE_BEACON_HINTS |
 204                             WIPHY_FLAG_IBSS_RSN;
 205
 206 #ifdef CONFIG_PM_SLEEP
 207         if (priv->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
 208             priv->trans->ops->d3_suspend &&
 209             priv->trans->ops->d3_resume &&
 210             device_can_wakeup(priv->trans->dev)) {
 211                 hw->wiphy->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
 212                                           WIPHY_WOWLAN_DISCONNECT |
 213                                           WIPHY_WOWLAN_EAP_IDENTITY_REQ |
 214                                           WIPHY_WOWLAN_RFKILL_RELEASE;
 215                 if (!iwlwifi_mod_params.sw_crypto)
 216                         hw->wiphy->wowlan.flags |=
 217                                 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
 218                                 WIPHY_WOWLAN_GTK_REKEY_FAILURE;
 219
 220                 hw->wiphy->wowlan.n_patterns = IWLAGN_WOWLAN_MAX_PATTERNS;
 221                 hw->wiphy->wowlan.pattern_min_len =
 222                                         IWLAGN_WOWLAN_MIN_PATTERN_LEN;
 223                 hw->wiphy->wowlan.pattern_max_len =
 224                                         IWLAGN_WOWLAN_MAX_PATTERN_LEN;
 225         }
 226 #endif
 227
 228         if (iwlwifi_mod_params.power_save)
 229                 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
 230         else
 231                 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
 232
 233         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
 234         /* we create the 802.11 header and a max-length SSID element */
 235         hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 34;
 236
 237         /*
 238          * We don't use all queues: 4 and 9 are unused and any
 239          * aggregation queue gets mapped down to the AC queue.
 240          */
 241         hw->queues = IWLAGN_FIRST_AMPDU_QUEUE;
 242
 243         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
 244
 245         if (priv->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
 246                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
 247                         &priv->nvm_data->bands[IEEE80211_BAND_2GHZ];
 248         if (priv->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
 249                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
 250                         &priv->nvm_data->bands[IEEE80211_BAND_5GHZ];
 251
 252         hw->wiphy->hw_version = priv->trans->hw_id;
 253
 254         iwl_leds_init(priv);
 255
 256         ret = ieee80211_register_hw(priv->hw);
 257         if (ret) {
 258                 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
 259                 iwl_leds_exit(priv);
 260                 return ret;
 261         }
 262         priv->mac80211_registered = 1;
 263
 264         return 0;
 265 }
 266
 267 void iwlagn_mac_unregister(struct iwl_priv *priv)
 268 {
 269         if (!priv->mac80211_registered)
 270                 return;
 271         iwl_leds_exit(priv);
 272         ieee80211_unregister_hw(priv->hw);
 273         priv->mac80211_registered = 0;
 274 }
 275
 276 static int __iwl_up(struct iwl_priv *priv)
 277 {
 278         struct iwl_rxon_context *ctx;
 279         int ret;
 280
 281         lockdep_assert_held(&priv->mutex);
 282
 283         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
 284                 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
 285                 return -EIO;
 286         }
 287
 288         for_each_context(priv, ctx) {
 289                 ret = iwlagn_alloc_bcast_station(priv, ctx);
 290                 if (ret) {
 291                         iwl_dealloc_bcast_stations(priv);
 292                         return ret;
 293                 }
 294         }
 295
 296         ret = iwl_run_init_ucode(priv);
 297         if (ret) {
 298                 IWL_ERR(priv, "Failed to run INIT ucode: %d\n", ret);
 299                 goto error;
 300         }
 301
 302         ret = iwl_load_ucode_wait_alive(priv, IWL_UCODE_REGULAR);
 303         if (ret) {
 304                 IWL_ERR(priv, "Failed to start RT ucode: %d\n", ret);
 305                 goto error;
 306         }
 307
 308         ret = iwl_alive_start(priv);
 309         if (ret)
 310                 goto error;
 311         return 0;
 312
 313  error:
 314         set_bit(STATUS_EXIT_PENDING, &priv->status);
 315         iwl_down(priv);
 316         clear_bit(STATUS_EXIT_PENDING, &priv->status);
 317
 318         IWL_ERR(priv, "Unable to initialize device.\n");
 319         return ret;
 320 }
 321
 322 static int iwlagn_mac_start(struct ieee80211_hw *hw)
 323 {
 324         struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
 325         int ret;
 326
 327         IWL_DEBUG_MAC80211(priv, "enter\n");
 328
 329         /* we should be verifying the device is ready to be opened */
 330         mutex_lock(&priv->mutex);
 331         ret = __iwl_up(priv);
 332         mutex_unlock(&priv->mutex);
 333         if (ret)
 334                 return ret;
 335
 336         IWL_DEBUG_INFO(priv, "Start UP work done.\n");
 337
 338         /* Now we should be done, and the READY bit should be set. */
 339         if (WARN_ON(!test_bit(STATUS_READY, &priv->status)))
 340                 ret = -EIO;
 341
 342         iwlagn_led_enable(priv);
 343
 344         priv->is_open = 1;
 345         IWL_DEBUG_MAC80211(priv, "leave\n");
 346         return 0;
 347 }
 348
 349 static void iwlagn_mac_stop(struct ieee80211_hw *hw)
 350 {
 351         struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
 352
 353         IWL_DEBUG_MAC80211(priv, "enter\n");
 354
 355         if (!priv->is_open)
 356                 return;
 357
 358         priv->is_open = 0;
 359
 360         mutex_lock(&priv->mutex);
 361         iwl_down(priv);
 362         mutex_unlock(&priv->mutex);
 363
 364         iwl_cancel_deferred_work(priv);
 365
 366         flush_workqueue(priv->workqueue);
 367
 368         /* User space software may expect getting rfkill changes
 369          * even if interface is down, trans->down will leave the RF
 370          * kill interrupt enabled
 371          */
 372         iwl_trans_stop_hw(priv->trans, false);
 373
 374         IWL_DEBUG_MAC80211(priv, "leave\n");
 375 }
 376
 377 static void iwlagn_mac_set_rekey_data(struct ieee80211_hw *hw,
 378                                       struct ieee80211_vif *vif,
 379                                       struct cfg80211_gtk_rekey_data *data)
 380 {
 381         struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
 382
 383         if (iwlwifi_mod_params.sw_crypto)
 384                 return;
 385
 386         IWL_DEBUG_MAC80211(priv, "enter\n");
 387         mutex_lock(&priv->mutex);
 388
 389         if (priv->contexts[IWL_RXON_CTX_BSS].vif != vif)
 390                 goto out;
 391
 392         memcpy(priv->kek, data->kek, NL80211_KEK_LEN);
 393         memcpy(priv->kck, data->kck, NL80211_KCK_LEN);
 394         priv->replay_ctr =
 395                 cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr));
 396         priv->have_rekey_data = true;
 397
 398  out:
 399         mutex_unlock(&priv->mutex);
 400         IWL_DEBUG_MAC80211(priv, "leave\n");
 401 }
 402
 403 #ifdef CONFIG_PM_SLEEP
 404
 405 static int iwlagn_mac_suspend(struct ieee80211_hw *hw,
 406                               struct cfg80211_wowlan *wowlan)
 407 {
 408         struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
 409         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
 410         int ret;
 411
 412         if (WARN_ON(!wowlan))
 413                 return -EINVAL;
 414
 415         IWL_DEBUG_MAC80211(priv, "enter\n");
 416         mutex_lock(&priv->mutex);
 417
 418         /* Don't attempt WoWLAN when not associated, tear down instead. */
 419         if (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION ||
 420             !iwl_is_associated_ctx(ctx)) {
 421                 ret = 1;
 422                 goto out;
 423         }
 424
 425         ret = iwlagn_suspend(priv, wowlan);
 426         if (ret)
 427                 goto error;
 428
 429         iwl_trans_d3_suspend(priv->trans);
 430
 431         goto out;
 432
 433  error:
 434         priv->wowlan = false;
 435         iwlagn_prepare_restart(priv);
 436         ieee80211_restart_hw(priv->hw);
 437  out:
 438         mutex_unlock(&priv->mutex);
 439         IWL_DEBUG_MAC80211(priv, "leave\n");
 440
 441         return ret;
 442 }
 443
 444 struct iwl_resume_data {
 445         struct iwl_priv *priv;
 446         struct iwlagn_wowlan_status *cmd;
 447         bool valid;
 448 };
 449
 450 static bool iwl_resume_status_fn(struct iwl_notif_wait_data *notif_wait,
 451                                  struct iwl_rx_packet *pkt, void *data)
 452 {
 453         struct iwl_resume_data *resume_data = data;
 454         struct iwl_priv *priv = resume_data->priv;
 455         u32 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
 456
 457         if (len - 4 != sizeof(*resume_data->cmd)) {
 458                 IWL_ERR(priv, "rx wrong size data\n");
 459                 return true;
 460         }
 461         memcpy(resume_data->cmd, pkt->data, sizeof(*resume_data->cmd));
 462         resume_data->valid = true;
 463
 464         return true;
 465 }
 466
 467 static int iwlagn_mac_resume(struct ieee80211_hw *hw)
 468 {
 469         struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
 470         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
 471         struct ieee80211_vif *vif;
 472         u32 base;
 473         int ret;
 474         enum iwl_d3_status d3_status;
 475         struct error_table_start {
 476                 /* cf. struct iwl_error_event_table */
 477                 u32 valid;
 478                 u32 error_id;
 479         } err_info;
 480         struct iwl_notification_wait status_wait;
 481         static const u8 status_cmd[] = {
 482                 REPLY_WOWLAN_GET_STATUS,
 483         };
 484         struct iwlagn_wowlan_status status_data = {};
 485         struct iwl_resume_data resume_data = {
 486                 .priv = priv,
 487                 .cmd = &status_data,
 488                 .valid = false,
 489         };
 490         struct cfg80211_wowlan_wakeup wakeup = {
 491                 .pattern_idx = -1,
 492         };
 493 #ifdef CONFIG_IWLWIFI_DEBUGFS
 494         const struct fw_img *img;
 495 #endif
 496
 497         IWL_DEBUG_MAC80211(priv, "enter\n");
 498         mutex_lock(&priv->mutex);
 499
 500         /* we'll clear ctx->vif during iwlagn_prepare_restart() */
 501         vif = ctx->vif;
 502
 503         ret = iwl_trans_d3_resume(priv->trans, &d3_status);
 504         if (ret)
 505                 goto out_unlock;
 506
 507         if (d3_status != IWL_D3_STATUS_ALIVE) {
 508                 IWL_INFO(priv, "Device was reset during suspend\n");
 509                 goto out_unlock;
 510         }
 511
 512         base = priv->device_pointers.error_event_table;
 513         if (!iwlagn_hw_valid_rtc_data_addr(base)) {
 514                 IWL_WARN(priv, "Invalid error table during resume!\n");
 515                 goto out_unlock;
 516         }
 517
 518         iwl_trans_read_mem_bytes(priv->trans, base,
 519                                  &err_info, sizeof(err_info));
 520
 521         if (err_info.valid) {
 522                 IWL_INFO(priv, "error table is valid (%d, 0x%x)\n",
 523                          err_info.valid, err_info.error_id);
 524                 if (err_info.error_id == RF_KILL_INDICATOR_FOR_WOWLAN) {
 525                         wakeup.rfkill_release = true;
 526                         ieee80211_report_wowlan_wakeup(vif, &wakeup,
 527                                                        GFP_KERNEL);
 528                 }
 529                 goto out_unlock;
 530         }
 531
 532 #ifdef CONFIG_IWLWIFI_DEBUGFS
 533         img = &priv->fw->img[IWL_UCODE_WOWLAN];
 534         if (!priv->wowlan_sram)
 535                 priv->wowlan_sram =
 536                         kzalloc(img->sec[IWL_UCODE_SECTION_DATA].len,
 537                                 GFP_KERNEL);
 538
 539         if (priv->wowlan_sram)
 540                 iwl_trans_read_mem(priv->trans, 0x800000,
 541                                    priv->wowlan_sram,
 542                                    img->sec[IWL_UCODE_SECTION_DATA].len / 4);
 543 #endif
 544
 545         /*
 546          * This is very strange. The GET_STATUS command is sent but the device
 547          * doesn't reply properly, it seems it doesn't close the RBD so one is
 548          * always left open ... As a result, we need to send another command
 549          * and have to reset the driver afterwards. As we need to switch to
 550          * runtime firmware again that'll happen.
 551          */
 552
 553         iwl_init_notification_wait(&priv->notif_wait, &status_wait, status_cmd,
 554                                    ARRAY_SIZE(status_cmd), iwl_resume_status_fn,
 555                                    &resume_data);
 556
 557         iwl_dvm_send_cmd_pdu(priv, REPLY_WOWLAN_GET_STATUS, CMD_ASYNC, 0, NULL);
 558         iwl_dvm_send_cmd_pdu(priv, REPLY_ECHO, CMD_ASYNC, 0, NULL);
 559         /* an RBD is left open in the firmware now! */
 560
 561         ret = iwl_wait_notification(&priv->notif_wait, &status_wait, HZ/5);
 562         if (ret)
 563                 goto out_unlock;
 564
 565         if (resume_data.valid && priv->contexts[IWL_RXON_CTX_BSS].vif) {
 566                 u32 reasons = le32_to_cpu(status_data.wakeup_reason);
 567                 struct cfg80211_wowlan_wakeup *wakeup_report;
 568
 569                 IWL_INFO(priv, "WoWLAN wakeup reason(s): 0x%.8x\n", reasons);
 570
 571                 if (reasons) {
 572                         if (reasons & IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET)
 573                                 wakeup.magic_pkt = true;
 574                         if (reasons & IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH)
 575                                 wakeup.pattern_idx = status_data.pattern_number;
 576                         if (reasons & (IWLAGN_WOWLAN_WAKEUP_BEACON_MISS |
 577                                        IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE))
 578                                 wakeup.disconnect = true;
 579                         if (reasons & IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL)
 580                                 wakeup.gtk_rekey_failure = true;
 581                         if (reasons & IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ)
 582                                 wakeup.eap_identity_req = true;
 583                         if (reasons & IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE)
 584                                 wakeup.four_way_handshake = true;
 585                         wakeup_report = &wakeup;
 586                 } else {
 587                         wakeup_report = NULL;
 588                 }
 589
 590                 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
 591         }
 592
 593         priv->wowlan = false;
 594
 595         iwlagn_prepare_restart(priv);
 596
 597         memset((void *)&ctx->active, 0, sizeof(ctx->active));
 598         iwl_connection_init_rx_config(priv, ctx);
 599         iwlagn_set_rxon_chain(priv, ctx);
 600
 601  out_unlock:
 602         mutex_unlock(&priv->mutex);
 603         IWL_DEBUG_MAC80211(priv, "leave\n");
 604
 605         ieee80211_resume_disconnect(vif);
 606
 607         return 1;
 608 }
 609
 610 static void iwlagn_mac_set_wakeup(struct ieee80211_hw *hw, bool enabled)
 611 {
 612         struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
 613
 614         device_set_wakeup_enable(priv->trans->dev, enabled);
 615 }
 616 #endif
 617
 618 static void iwlagn_mac_tx(struct ieee80211_hw *hw,
 619                           struct ieee80211_tx_control *control,
 620                           struct sk_buff *skb)
 621 {
 622         struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
 623
 624         if (iwlagn_tx_skb(priv, control->sta, skb))
 625                 ieee80211_free_txskb(hw, skb);
 626 }
 627
 628 static void iwlagn_mac_update_tkip_key(struct ieee80211_hw *hw,
 629                                        struct ieee80211_vif *vif,
 630                                        struct ieee80211_key_conf *keyconf,
 631                                        struct ieee80211_sta *sta,
 632                                        u32 iv32, u16 *phase1key)
 633 {
 634         struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
 635
 636         iwl_update_tkip_key(priv, vif, keyconf, sta, iv32, phase1key);
 637 }
 638
 639 static int iwlagn_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 640                               struct ieee80211_vif *vif,
 641                               struct ieee80211_sta *sta,
 642                               struct ieee80211_key_conf *key)
 643 {
 644         struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
 645         struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
 646         struct iwl_rxon_context *ctx = vif_priv->ctx;
 647         int ret;
 648         bool is_default_wep_key = false;
 649
 650         IWL_DEBUG_MAC80211(priv, "enter\n");
 651
 652         if (iwlwifi_mod_params.sw_crypto) {
 653                 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
 654                 return -EOPNOTSUPP;
 655         }
 656
 657         switch (key->cipher) {
 658         case WLAN_CIPHER_SUITE_TKIP:
 659                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
 660                 /* fall through */
 661         case WLAN_CIPHER_SUITE_CCMP:
 662                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
 663                 break;
 664         default:
 665                 break;
 666         }
 667
 668         /*
 669          * We could program these keys into the hardware as well, but we
 670          * don't expect much multicast traffic in IBSS and having keys
 671          * for more stations is probably more useful.
 672          *
 673          * Mark key TX-only and return 0.
 674          */
 675         if (vif->type == NL80211_IFTYPE_ADHOC &&
 676             !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
 677                 key->hw_key_idx = WEP_INVALID_OFFSET;
 678                 return 0;
 679         }
 680
 681         /* If they key was TX-only, accept deletion */
 682         if (cmd == DISABLE_KEY && key->hw_key_idx == WEP_INVALID_OFFSET)
 683                 return 0;
 684
 685         mutex_lock(&priv->mutex);
 686         iwl_scan_cancel_timeout(priv, 100);
 687
 688         BUILD_BUG_ON(WEP_INVALID_OFFSET == IWLAGN_HW_KEY_DEFAULT);
 689
 690         /*
 691          * If we are getting WEP group key and we didn't receive any key mapping
 692          * so far, we are in legacy wep mode (group key only), otherwise we are
 693          * in 1X mode.
 694          * In legacy wep mode, we use another host command to the uCode.
 695          */
 696         if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
 697              key->cipher == WLAN_CIPHER_SUITE_WEP104) && !sta) {
 698                 if (cmd == SET_KEY)
 699                         is_default_wep_key = !ctx->key_mapping_keys;
 700                 else
 701                         is_default_wep_key =
 702                                 key->hw_key_idx == IWLAGN_HW_KEY_DEFAULT;
 703         }
 704
 705
 706         switch (cmd) {
 707         case SET_KEY:
 708                 if (is_default_wep_key) {
 709                         ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
 710                         break;
 711                 }
 712                 ret = iwl_set_dynamic_key(priv, vif_priv->ctx, key, sta);
 713                 if (ret) {
 714                         /*
 715                          * can't add key for RX, but we don't need it
 716                          * in the device for TX so still return 0
 717                          */
 718                         ret = 0;
 719                         key->hw_key_idx = WEP_INVALID_OFFSET;
 720                 }
 721
 722                 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
 723                 break;
 724         case DISABLE_KEY:
 725                 if (is_default_wep_key)
 726                         ret = iwl_remove_default_wep_key(priv, ctx, key);
 727                 else
 728                         ret = iwl_remove_dynamic_key(priv, ctx, key, sta);
 729
 730                 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
 731                 break;
 732         default:
 733                 ret = -EINVAL;
 734         }
 735
 736         mutex_unlock(&priv->mutex);
 737         IWL_DEBUG_MAC80211(priv, "leave\n");
 738
 739         return ret;
 740 }
 741
 742 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
 743 {
 744         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
 745                 return false;
 746         return true;
 747 }
 748
 749 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
 750 {
 751         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
 752                 return false;
 753         if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
 754                 return true;
 755
 756         /* disabled by default */
 757         return false;
 758 }
 759
 760 static int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw,
 761                                    struct ieee80211_vif *vif,
 762                                    enum ieee80211_ampdu_mlme_action action,
 763                                    struct ieee80211_sta *sta, u16 tid, u16 *ssn,
 764                                    u8 buf_size)
 765 {
 766         struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
 767         int ret = -EINVAL;
 768         struct iwl_station_priv *sta_priv = (void *) sta->drv_priv;
 769
 770         IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
 771                      sta->addr, tid);
 772
 773         if (!(priv->nvm_data->sku_cap_11n_enable))
 774                 return -EACCES;
 775
 776         IWL_DEBUG_MAC80211(priv, "enter\n");
 777         mutex_lock(&priv->mutex);
 778
 779         switch (action) {
 780         case IEEE80211_AMPDU_RX_START:
 781                 if (!iwl_enable_rx_ampdu(priv->cfg))
 782                         break;
 783                 IWL_DEBUG_HT(priv, "start Rx\n");
 784                 ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
 785                 break;
 786         case IEEE80211_AMPDU_RX_STOP:
 787                 IWL_DEBUG_HT(priv, "stop Rx\n");
 788                 ret = iwl_sta_rx_agg_stop(priv, sta, tid);
 789                 break;
 790         case IEEE80211_AMPDU_TX_START:
 791                 if (!priv->trans->ops->txq_enable)
 792                         break;
 793                 if (!iwl_enable_tx_ampdu(priv->cfg))
 794                         break;
 795                 IWL_DEBUG_HT(priv, "start Tx\n");
 796                 ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
 797                 break;
 798         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 799         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 800                 IWL_DEBUG_HT(priv, "Flush Tx\n");
 801                 ret = iwlagn_tx_agg_flush(priv, vif, sta, tid);
 802                 break;
 803         case IEEE80211_AMPDU_TX_STOP_CONT:
 804                 IWL_DEBUG_HT(priv, "stop Tx\n");
 805                 ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
 806                 if ((ret == 0) && (priv->agg_tids_count > 0)) {
 807                         priv->agg_tids_count--;
 808                         IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
 809                                      priv->agg_tids_count);
 810                 }
 811                 if (!priv->agg_tids_count &&
 812                     priv->hw_params.use_rts_for_aggregation) {
 813                         /*
 814                          * switch off RTS/CTS if it was previously enabled
 815                          */
 816                         sta_priv->lq_sta.lq.general_params.flags &=
 817                                 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
 818                         iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
 819                                         &sta_priv->lq_sta.lq, CMD_ASYNC, false);
 820                 }
 821                 break;
 822         case IEEE80211_AMPDU_TX_OPERATIONAL:
 823                 ret = iwlagn_tx_agg_oper(priv, vif, sta, tid, buf_size);
 824                 break;
 825         }
 826         mutex_unlock(&priv->mutex);
 827         IWL_DEBUG_MAC80211(priv, "leave\n");
 828         return ret;
 829 }
 830
 831 static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
 832                               struct ieee80211_vif *vif,
 833                               struct ieee80211_sta *sta)
 834 {
 835         struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
 836         struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
 837         struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
 838         bool is_ap = vif->type == NL80211_IFTYPE_STATION;
 839         int ret;
 840         u8 sta_id;
 841
 842         IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
 843                         sta->addr);
 844         sta_priv->sta_id = IWL_INVALID_STATION;
 845
 846         atomic_set(&sta_priv->pending_frames, 0);
 847         if (vif->type == NL80211_IFTYPE_AP)
 848                 sta_priv->client = true;
 849
 850         ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
 851                                      is_ap, sta, &sta_id);
 852         if (ret) {
 853                 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
 854                         sta->addr, ret);
 855                 /* Should we return success if return code is EEXIST ? */
 856                 return ret;
 857         }
 858
 859         sta_priv->sta_id = sta_id;
 860
 861         return 0;
 862 }
 863
 864 static int iwlagn_mac_sta_remove(struct ieee80211_hw *hw,
 865                                  struct ieee80211_vif *vif,
 866                                  struct ieee80211_sta *sta)
 867 {
 868         struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
 869         struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
 870         int ret;
 871
 872         IWL_DEBUG_INFO(priv, "proceeding to remove station %pM\n", sta->addr);
 873
 874         if (vif->type == NL80211_IFTYPE_STATION) {
 875                 /*
 876                  * Station will be removed from device when the RXON
 877                  * is set to unassociated -- just deactivate it here
 878                  * to avoid re-programming it.
 879                  */
 880                 ret = 0;
 881                 iwl_deactivate_station(priv, sta_priv->sta_id, sta->addr);
 882         } else {
 883                 ret = iwl_remove_station(priv, sta_priv->sta_id, sta->addr);
 884                 if (ret)
 885                         IWL_DEBUG_QUIET_RFKILL(priv,
 886                                 "Error removing station %pM\n", sta->addr);
 887         }
 888         return ret;
 889 }
 890
 891 static int iwlagn_mac_sta_state(struct ieee80211_hw *hw,
 892                                 struct ieee80211_vif *vif,
 893                                 struct ieee80211_sta *sta,
 894                                 enum ieee80211_sta_state old_state,
 895                                 enum ieee80211_sta_state new_state)
 896 {
 897         struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
 898         struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
 899         enum {
 900                 NONE, ADD, REMOVE, HT_RATE_INIT, ADD_RATE_INIT,
 901         } op = NONE;
 902         int ret;
 903
 904         IWL_DEBUG_MAC80211(priv, "station %pM state change %d->%d\n",
 905                            sta->addr, old_state, new_state);
 906
 907         mutex_lock(&priv->mutex);
 908         if (vif->type == NL80211_IFTYPE_STATION) {
 909                 if (old_state == IEEE80211_STA_NOTEXIST &&
 910                     new_state == IEEE80211_STA_NONE)
 911                         op = ADD;
 912                 else if (old_state == IEEE80211_STA_NONE &&
 913                          new_state == IEEE80211_STA_NOTEXIST)
 914                         op = REMOVE;
 915                 else if (old_state == IEEE80211_STA_AUTH &&
 916                          new_state == IEEE80211_STA_ASSOC)
 917                         op = HT_RATE_INIT;
 918         } else {
 919                 if (old_state == IEEE80211_STA_AUTH &&
 920                     new_state == IEEE80211_STA_ASSOC)
 921                         op = ADD_RATE_INIT;
 922                 else if (old_state == IEEE80211_STA_ASSOC &&
 923                          new_state == IEEE80211_STA_AUTH)
 924                         op = REMOVE;
 925         }
 926
 927         switch (op) {
 928         case ADD:
 929                 ret = iwlagn_mac_sta_add(hw, vif, sta);
 930                 if (ret)
 931                         break;
 932                 /*
 933                  * Clear the in-progress flag, the AP station entry was added
 934                  * but we'll initialize LQ only when we've associated (which
 935                  * would also clear the in-progress flag). This is necessary
 936                  * in case we never initialize LQ because association fails.
 937                  */
 938                 spin_lock_bh(&priv->sta_lock);
 939                 priv->stations[iwl_sta_id(sta)].used &=
 940                         ~IWL_STA_UCODE_INPROGRESS;
 941                 spin_unlock_bh(&priv->sta_lock);
 942                 break;
 943         case REMOVE:
 944                 ret = iwlagn_mac_sta_remove(hw, vif, sta);
 945                 break;
 946         case ADD_RATE_INIT:
 947                 ret = iwlagn_mac_sta_add(hw, vif, sta);
 948                 if (ret)
 949                         break;
 950                 /* Initialize rate scaling */
 951                 IWL_DEBUG_INFO(priv,
 952                                "Initializing rate scaling for station %pM\n",
 953                                sta->addr);
 954                 iwl_rs_rate_init(priv, sta, iwl_sta_id(sta));
 955                 ret = 0;
 956                 break;
 957         case HT_RATE_INIT:
 958                 /* Initialize rate scaling */
 959                 ret = iwl_sta_update_ht(priv, vif_priv->ctx, sta);
 960                 if (ret)
 961                         break;
 962                 IWL_DEBUG_INFO(priv,
 963                                "Initializing rate scaling for station %pM\n",
 964                                sta->addr);
 965                 iwl_rs_rate_init(priv, sta, iwl_sta_id(sta));
 966                 ret = 0;
 967                 break;
 968         default:
 969                 ret = 0;
 970                 break;
 971         }
 972
 973         /*
 974          * mac80211 might WARN if we fail, but due the way we
 975          * (badly) handle hard rfkill, we might fail here
 976          */
 977         if (iwl_is_rfkill(priv))
 978                 ret = 0;
 979
 980         mutex_unlock(&priv->mutex);
 981         IWL_DEBUG_MAC80211(priv, "leave\n");
 982
 983         return ret;
 984 }
 985
 986 static void iwlagn_mac_channel_switch(struct ieee80211_hw *hw,
 987                                       struct ieee80211_channel_switch *ch_switch)
 988 {
 989         struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
 990         struct ieee80211_conf *conf = &hw->conf;
 991         struct ieee80211_channel *channel = ch_switch->chandef.chan;
 992         struct iwl_ht_config *ht_conf = &priv->current_ht_config;
 993         /*
 994          * MULTI-FIXME
 995          * When we add support for multiple interfaces, we need to
 996          * revisit this. The channel switch command in the device
 997          * only affects the BSS context, but what does that really
 998          * mean? And what if we get a CSA on the second interface?
 999          * This needs a lot of work.
1000          */
1001         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1002         u16 ch;
1003
1004         IWL_DEBUG_MAC80211(priv, "enter\n");
1005
1006         mutex_lock(&priv->mutex);
1007
1008         if (iwl_is_rfkill(priv))
1009                 goto out;
1010
1011         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
1012             test_bit(STATUS_SCANNING, &priv->status) ||
1013             test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status))
1014                 goto out;
1015
1016         if (!iwl_is_associated_ctx(ctx))
1017                 goto out;
1018
1019         if (!priv->lib->set_channel_switch)
1020                 goto out;
1021
1022         ch = channel->hw_value;
1023         if (le16_to_cpu(ctx->active.channel) == ch)
1024                 goto out;
1025
1026         priv->current_ht_config.smps = conf->smps_mode;
1027
1028         /* Configure HT40 channels */
1029         switch (cfg80211_get_chandef_type(&ch_switch->chandef)) {
1030         case NL80211_CHAN_NO_HT:
1031         case NL80211_CHAN_HT20:
1032                 ctx->ht.is_40mhz = false;
1033                 ctx->ht.extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
1034                 break;
1035         case NL80211_CHAN_HT40MINUS:
1036                 ctx->ht.extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
1037                 ctx->ht.is_40mhz = true;
1038                 break;
1039         case NL80211_CHAN_HT40PLUS:
1040                 ctx->ht.extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
1041                 ctx->ht.is_40mhz = true;
1042                 break;
1043         }
1044
1045         if ((le16_to_cpu(ctx->staging.channel) != ch))
1046                 ctx->staging.flags = 0;
1047
1048         iwl_set_rxon_channel(priv, channel, ctx);
1049         iwl_set_rxon_ht(priv, ht_conf);
1050         iwl_set_flags_for_band(priv, ctx, channel->band, ctx->vif);
1051
1052         /*
1053          * at this point, staging_rxon has the
1054          * configuration for channel switch
1055          */
1056         set_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
1057         priv->switch_channel = cpu_to_le16(ch);
1058         if (priv->lib->set_channel_switch(priv, ch_switch)) {
1059                 clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
1060                 priv->switch_channel = 0;
1061                 ieee80211_chswitch_done(ctx->vif, false);
1062         }
1063
1064 out:
1065         mutex_unlock(&priv->mutex);
1066         IWL_DEBUG_MAC80211(priv, "leave\n");
1067 }
1068
1069 void iwl_chswitch_done(struct iwl_priv *priv, bool is_success)
1070 {
1071         /*
1072          * MULTI-FIXME
1073          * See iwlagn_mac_channel_switch.
1074          */
1075         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1076
1077         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1078                 return;
1079
1080         if (!test_and_clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status))
1081                 return;
1082
1083         if (ctx->vif)
1084                 ieee80211_chswitch_done(ctx->vif, is_success);
1085 }
1086
1087 static void iwlagn_configure_filter(struct ieee80211_hw *hw,
1088                                     unsigned int changed_flags,
1089                                     unsigned int *total_flags,
1090                                     u64 multicast)
1091 {
1092         struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1093         __le32 filter_or = 0, filter_nand = 0;
1094         struct iwl_rxon_context *ctx;
1095
1096 #define CHK(test, flag) do { \
1097         if (*total_flags & (test))              \
1098                 filter_or |= (flag);            \
1099         else                                    \
1100                 filter_nand |= (flag);          \
1101         } while (0)
1102
1103         IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
1104                         changed_flags, *total_flags);
1105
1106         CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
1107         /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
1108         CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK);
1109         CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
1110
1111 #undef CHK
1112
1113         mutex_lock(&priv->mutex);
1114
1115         for_each_context(priv, ctx) {
1116                 ctx->staging.filter_flags &= ~filter_nand;
1117                 ctx->staging.filter_flags |= filter_or;
1118
1119                 /*
1120                  * Not committing directly because hardware can perform a scan,
1121                  * but we'll eventually commit the filter flags change anyway.
1122                  */
1123         }
1124
1125         mutex_unlock(&priv->mutex);
1126
1127         /*
1128          * Receiving all multicast frames is always enabled by the
1129          * default flags setup in iwl_connection_init_rx_config()
1130          * since we currently do not support programming multicast
1131          * filters into the device.
1132          */
1133         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
1134                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
1135 }
1136
1137 static void iwlagn_mac_flush(struct ieee80211_hw *hw, u32 queues, bool drop)
1138 {
1139         struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1140
1141         mutex_lock(&priv->mutex);
1142         IWL_DEBUG_MAC80211(priv, "enter\n");
1143
1144         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1145                 IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
1146                 goto done;
1147         }
1148         if (iwl_is_rfkill(priv)) {
1149                 IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
1150                 goto done;
1151         }
1152
1153         /*
1154          * mac80211 will not push any more frames for transmit
1155          * until the flush is completed
1156          */
1157         if (drop) {
1158                 IWL_DEBUG_MAC80211(priv, "send flush command\n");
1159                 if (iwlagn_txfifo_flush(priv, 0)) {
1160                         IWL_ERR(priv, "flush request fail\n");
1161                         goto done;
1162                 }
1163         }
1164         IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
1165         iwl_trans_wait_tx_queue_empty(priv->trans);
1166 done:
1167         mutex_unlock(&priv->mutex);
1168         IWL_DEBUG_MAC80211(priv, "leave\n");
1169 }
1170
1171 static int iwlagn_mac_remain_on_channel(struct ieee80211_hw *hw,
1172                                      struct ieee80211_vif *vif,
1173                                      struct ieee80211_channel *channel,
1174                                      int duration,
1175                                      enum ieee80211_roc_type type)
1176 {
1177         struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1178         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
1179         int err = 0;
1180
1181         if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
1182                 return -EOPNOTSUPP;
1183
1184         if (!(ctx->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)))
1185                 return -EOPNOTSUPP;
1186
1187         IWL_DEBUG_MAC80211(priv, "enter\n");
1188         mutex_lock(&priv->mutex);
1189
1190         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
1191                 /* mac80211 should not scan while ROC or ROC while scanning */
1192                 if (WARN_ON_ONCE(priv->scan_type != IWL_SCAN_RADIO_RESET)) {
1193                         err = -EBUSY;
1194                         goto out;
1195                 }
1196
1197                 iwl_scan_cancel_timeout(priv, 100);
1198
1199                 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
1200                         err = -EBUSY;
1201                         goto out;
1202                 }
1203         }
1204
1205         priv->hw_roc_channel = channel;
1206         /* convert from ms to TU */
1207         priv->hw_roc_duration = DIV_ROUND_UP(1000 * duration, 1024);
1208         priv->hw_roc_start_notified = false;
1209         cancel_delayed_work(&priv->hw_roc_disable_work);
1210
1211         if (!ctx->is_active) {
1212                 static const struct iwl_qos_info default_qos_data = {
1213                         .def_qos_parm = {
1214                                 .ac[0] = {
1215                                         .cw_min = cpu_to_le16(3),
1216                                         .cw_max = cpu_to_le16(7),
1217                                         .aifsn = 2,
1218                                         .edca_txop = cpu_to_le16(1504),
1219                                 },
1220                                 .ac[1] = {
1221                                         .cw_min = cpu_to_le16(7),
1222                                         .cw_max = cpu_to_le16(15),
1223                                         .aifsn = 2,
1224                                         .edca_txop = cpu_to_le16(3008),
1225                                 },
1226                                 .ac[2] = {
1227                                         .cw_min = cpu_to_le16(15),
1228                                         .cw_max = cpu_to_le16(1023),
1229                                         .aifsn = 3,
1230                                 },
1231                                 .ac[3] = {
1232                                         .cw_min = cpu_to_le16(15),
1233                                         .cw_max = cpu_to_le16(1023),
1234                                         .aifsn = 7,
1235                                 },
1236                         },
1237                 };
1238
1239                 ctx->is_active = true;
1240                 ctx->qos_data = default_qos_data;
1241                 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
1242                 memcpy(ctx->staging.node_addr,
1243                        priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
1244                        ETH_ALEN);
1245                 memcpy(ctx->staging.bssid_addr,
1246                        priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
1247                        ETH_ALEN);
1248                 err = iwlagn_commit_rxon(priv, ctx);
1249                 if (err)
1250                         goto out;
1251                 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK |
1252                                              RXON_FILTER_PROMISC_MSK |
1253                                              RXON_FILTER_CTL2HOST_MSK;
1254
1255                 err = iwlagn_commit_rxon(priv, ctx);
1256                 if (err) {
1257                         iwlagn_disable_roc(priv);
1258                         goto out;
1259                 }
1260                 priv->hw_roc_setup = true;
1261         }
1262
1263         err = iwl_scan_initiate(priv, ctx->vif, IWL_SCAN_ROC, channel->band);
1264         if (err)
1265                 iwlagn_disable_roc(priv);
1266
1267  out:
1268         mutex_unlock(&priv->mutex);
1269         IWL_DEBUG_MAC80211(priv, "leave\n");
1270
1271         return err;
1272 }
1273
1274 static int iwlagn_mac_cancel_remain_on_channel(struct ieee80211_hw *hw)
1275 {
1276         struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1277
1278         if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
1279                 return -EOPNOTSUPP;
1280
1281         IWL_DEBUG_MAC80211(priv, "enter\n");
1282         mutex_lock(&priv->mutex);
1283         iwl_scan_cancel_timeout(priv, priv->hw_roc_duration);
1284         iwlagn_disable_roc(priv);
1285         mutex_unlock(&priv->mutex);
1286         IWL_DEBUG_MAC80211(priv, "leave\n");
1287
1288         return 0;
1289 }
1290
1291 static void iwlagn_mac_rssi_callback(struct ieee80211_hw *hw,
1292                                      struct ieee80211_vif *vif,
1293                                      enum ieee80211_rssi_event rssi_event)
1294 {
1295         struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1296
1297         IWL_DEBUG_MAC80211(priv, "enter\n");
1298         mutex_lock(&priv->mutex);
1299
1300         if (priv->cfg->bt_params &&
1301                         priv->cfg->bt_params->advanced_bt_coexist) {
1302                 if (rssi_event == RSSI_EVENT_LOW)
1303                         priv->bt_enable_pspoll = true;
1304                 else if (rssi_event == RSSI_EVENT_HIGH)
1305                         priv->bt_enable_pspoll = false;
1306
1307                 iwlagn_send_advance_bt_config(priv);
1308         } else {
1309                 IWL_DEBUG_MAC80211(priv, "Advanced BT coex disabled,"
1310                                 "ignoring RSSI callback\n");
1311         }
1312
1313         mutex_unlock(&priv->mutex);
1314         IWL_DEBUG_MAC80211(priv, "leave\n");
1315 }
1316
1317 static int iwlagn_mac_set_tim(struct ieee80211_hw *hw,
1318                               struct ieee80211_sta *sta, bool set)
1319 {
1320         struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1321
1322         queue_work(priv->workqueue, &priv->beacon_update);
1323
1324         return 0;
1325 }
1326
1327 static int iwlagn_mac_conf_tx(struct ieee80211_hw *hw,
1328                               struct ieee80211_vif *vif, u16 queue,
1329                               const struct ieee80211_tx_queue_params *params)
1330 {
1331         struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1332         struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
1333         struct iwl_rxon_context *ctx = vif_priv->ctx;
1334         int q;
1335
1336         if (WARN_ON(!ctx))
1337                 return -EINVAL;
1338
1339         IWL_DEBUG_MAC80211(priv, "enter\n");
1340
1341         if (!iwl_is_ready_rf(priv)) {
1342                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
1343                 return -EIO;
1344         }
1345
1346         if (queue >= AC_NUM) {
1347                 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
1348                 return 0;
1349         }
1350
1351         q = AC_NUM - 1 - queue;
1352
1353         mutex_lock(&priv->mutex);
1354
1355         ctx->qos_data.def_qos_parm.ac[q].cw_min =
1356                 cpu_to_le16(params->cw_min);
1357         ctx->qos_data.def_qos_parm.ac[q].cw_max =
1358                 cpu_to_le16(params->cw_max);
1359         ctx->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
1360         ctx->qos_data.def_qos_parm.ac[q].edca_txop =
1361                         cpu_to_le16((params->txop * 32));
1362
1363         ctx->qos_data.def_qos_parm.ac[q].reserved1 = 0;
1364
1365         mutex_unlock(&priv->mutex);
1366
1367         IWL_DEBUG_MAC80211(priv, "leave\n");
1368         return 0;
1369 }
1370
1371 static int iwlagn_mac_tx_last_beacon(struct ieee80211_hw *hw)
1372 {
1373         struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1374
1375         return priv->ibss_manager == IWL_IBSS_MANAGER;
1376 }
1377
1378 static int iwl_set_mode(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
1379 {
1380         iwl_connection_init_rx_config(priv, ctx);
1381
1382         iwlagn_set_rxon_chain(priv, ctx);
1383
1384         return iwlagn_commit_rxon(priv, ctx);
1385 }
1386
1387 static int iwl_setup_interface(struct iwl_priv *priv,
1388                                struct iwl_rxon_context *ctx)
1389 {
1390         struct ieee80211_vif *vif = ctx->vif;
1391         int err, ac;
1392
1393         lockdep_assert_held(&priv->mutex);
1394
1395         /*
1396          * This variable will be correct only when there's just
1397          * a single context, but all code using it is for hardware
1398          * that supports only one context.
1399          */
1400         priv->iw_mode = vif->type;
1401
1402         ctx->is_active = true;
1403
1404         err = iwl_set_mode(priv, ctx);
1405         if (err) {
1406                 if (!ctx->always_active)
1407                         ctx->is_active = false;
1408                 return err;
1409         }
1410
1411         if (priv->cfg->bt_params && priv->cfg->bt_params->advanced_bt_coexist &&
1412             vif->type == NL80211_IFTYPE_ADHOC) {
1413                 /*
1414                  * pretend to have high BT traffic as long as we
1415                  * are operating in IBSS mode, as this will cause
1416                  * the rate scaling etc. to behave as intended.
1417                  */
1418                 priv->bt_traffic_load = IWL_BT_COEX_TRAFFIC_LOAD_HIGH;
1419         }
1420
1421         /* set up queue mappings */
1422         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
1423                 vif->hw_queue[ac] = ctx->ac_to_queue[ac];
1424
1425         if (vif->type == NL80211_IFTYPE_AP)
1426                 vif->cab_queue = ctx->mcast_queue;
1427         else
1428                 vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
1429
1430         return 0;
1431 }
1432
1433 static int iwlagn_mac_add_interface(struct ieee80211_hw *hw,
1434                                     struct ieee80211_vif *vif)
1435 {
1436         struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1437         struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
1438         struct iwl_rxon_context *tmp, *ctx = NULL;
1439         int err;
1440         enum nl80211_iftype viftype = ieee80211_vif_type_p2p(vif);
1441         bool reset = false;
1442
1443         IWL_DEBUG_MAC80211(priv, "enter: type %d, addr %pM\n",
1444                            viftype, vif->addr);
1445
1446         cancel_delayed_work_sync(&priv->hw_roc_disable_work);
1447
1448         mutex_lock(&priv->mutex);
1449
1450         iwlagn_disable_roc(priv);
1451
1452         if (!iwl_is_ready_rf(priv)) {
1453                 IWL_WARN(priv, "Try to add interface when device not ready\n");
1454                 err = -EINVAL;
1455                 goto out;
1456         }
1457
1458         for_each_context(priv, tmp) {
1459                 u32 possible_modes =
1460                         tmp->interface_modes | tmp->exclusive_interface_modes;
1461
1462                 if (tmp->vif) {
1463                         /* On reset we need to add the same interface again */
1464                         if (tmp->vif == vif) {
1465                                 reset = true;
1466                                 ctx = tmp;
1467                                 break;
1468                         }
1469
1470                         /* check if this busy context is exclusive */
1471                         if (tmp->exclusive_interface_modes &
1472                                                 BIT(tmp->vif->type)) {
1473                                 err = -EINVAL;
1474                                 goto out;
1475                         }
1476                         continue;
1477                 }
1478
1479                 if (!(possible_modes & BIT(viftype)))
1480                         continue;
1481
1482                 /* have maybe usable context w/o interface */
1483                 ctx = tmp;
1484                 break;
1485         }
1486
1487         if (!ctx) {
1488                 err = -EOPNOTSUPP;
1489                 goto out;
1490         }
1491
1492         vif_priv->ctx = ctx;
1493         ctx->vif = vif;
1494
1495         /*
1496          * In SNIFFER device type, the firmware reports the FCS to
1497          * the host, rather than snipping it off. Unfortunately,
1498          * mac80211 doesn't (yet) provide a per-packet flag for
1499          * this, so that we have to set the hardware flag based
1500          * on the interfaces added. As the monitor interface can
1501          * only be present by itself, and will be removed before
1502          * other interfaces are added, this is safe.
1503          */
1504         if (vif->type == NL80211_IFTYPE_MONITOR)
1505                 priv->hw->flags |= IEEE80211_HW_RX_INCLUDES_FCS;
1506         else
1507                 priv->hw->flags &= ~IEEE80211_HW_RX_INCLUDES_FCS;
1508
1509         err = iwl_setup_interface(priv, ctx);
1510         if (!err || reset)
1511                 goto out;
1512
1513         ctx->vif = NULL;
1514         priv->iw_mode = NL80211_IFTYPE_STATION;
1515  out:
1516         mutex_unlock(&priv->mutex);
1517
1518         IWL_DEBUG_MAC80211(priv, "leave\n");
1519         return err;
1520 }
1521
1522 static void iwl_teardown_interface(struct iwl_priv *priv,
1523                                    struct ieee80211_vif *vif,
1524                                    bool mode_change)
1525 {
1526         struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1527
1528         lockdep_assert_held(&priv->mutex);
1529
1530         if (priv->scan_vif == vif) {
1531                 iwl_scan_cancel_timeout(priv, 200);
1532                 iwl_force_scan_end(priv);
1533         }
1534
1535         if (!mode_change) {
1536                 iwl_set_mode(priv, ctx);
1537                 if (!ctx->always_active)
1538                         ctx->is_active = false;
1539         }
1540
1541         /*
1542          * When removing the IBSS interface, overwrite the
1543          * BT traffic load with the stored one from the last
1544          * notification, if any. If this is a device that
1545          * doesn't implement this, this has no effect since
1546          * both values are the same and zero.
1547          */
1548         if (vif->type == NL80211_IFTYPE_ADHOC)
1549                 priv->bt_traffic_load = priv->last_bt_traffic_load;
1550 }
1551
1552 static void iwlagn_mac_remove_interface(struct ieee80211_hw *hw,
1553                               struct ieee80211_vif *vif)
1554 {
1555         struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1556         struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1557
1558         IWL_DEBUG_MAC80211(priv, "enter\n");
1559
1560         mutex_lock(&priv->mutex);
1561
1562         if (WARN_ON(ctx->vif != vif)) {
1563                 struct iwl_rxon_context *tmp;
1564                 IWL_ERR(priv, "ctx->vif = %p, vif = %p\n", ctx->vif, vif);
1565                 for_each_context(priv, tmp)
1566                         IWL_ERR(priv, "\tID = %d:\tctx = %p\tctx->vif = %p\n",
1567                                 tmp->ctxid, tmp, tmp->vif);
1568         }
1569         ctx->vif = NULL;
1570
1571         iwl_teardown_interface(priv, vif, false);
1572
1573         mutex_unlock(&priv->mutex);
1574
1575         IWL_DEBUG_MAC80211(priv, "leave\n");
1576
1577 }
1578
1579 static int iwlagn_mac_change_interface(struct ieee80211_hw *hw,
1580                                        struct ieee80211_vif *vif,
1581                                        enum nl80211_iftype newtype, bool newp2p)
1582 {
1583         struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1584         struct iwl_rxon_context *ctx, *tmp;
1585         enum nl80211_iftype newviftype = newtype;
1586         u32 interface_modes;
1587         int err;
1588
1589         IWL_DEBUG_MAC80211(priv, "enter\n");
1590
1591         newtype = ieee80211_iftype_p2p(newtype, newp2p);
1592
1593         mutex_lock(&priv->mutex);
1594
1595         ctx = iwl_rxon_ctx_from_vif(vif);
1596
1597         /*
1598          * To simplify this code, only support changes on the
1599          * BSS context. The PAN context is usually reassigned
1600          * by creating/removing P2P interfaces anyway.
1601          */
1602         if (ctx->ctxid != IWL_RXON_CTX_BSS) {
1603                 err = -EBUSY;
1604                 goto out;
1605         }
1606
1607         if (!ctx->vif || !iwl_is_ready_rf(priv)) {
1608                 /*
1609                  * Huh? But wait ... this can maybe happen when
1610                  * we're in the middle of a firmware restart!
1611                  */
1612                 err = -EBUSY;
1613                 goto out;
1614         }
1615
1616         /* Check if the switch is supported in the same context */
1617         interface_modes = ctx->interface_modes | ctx->exclusive_interface_modes;
1618         if (!(interface_modes & BIT(newtype))) {
1619                 err = -EBUSY;
1620                 goto out;
1621         }
1622
1623         if (ctx->exclusive_interface_modes & BIT(newtype)) {
1624                 for_each_context(priv, tmp) {
1625                         if (ctx == tmp)
1626                                 continue;
1627
1628                         if (!tmp->is_active)
1629                                 continue;
1630
1631                         /*
1632                          * The current mode switch would be exclusive, but
1633                          * another context is active ... refuse the switch.
1634                          */
1635                         err = -EBUSY;
1636                         goto out;
1637                 }
1638         }
1639
1640         /* success */
1641         iwl_teardown_interface(priv, vif, true);
1642         vif->type = newviftype;
1643         vif->p2p = newp2p;
1644         err = iwl_setup_interface(priv, ctx);
1645         WARN_ON(err);
1646         /*
1647          * We've switched internally, but submitting to the
1648          * device may have failed for some reason. Mask this
1649          * error, because otherwise mac80211 will not switch
1650          * (and set the interface type back) and we'll be
1651          * out of sync with it.
1652          */
1653         err = 0;
1654
1655  out:
1656         mutex_unlock(&priv->mutex);
1657         IWL_DEBUG_MAC80211(priv, "leave\n");
1658
1659         return err;
1660 }
1661
1662 static int iwlagn_mac_hw_scan(struct ieee80211_hw *hw,
1663                               struct ieee80211_vif *vif,
1664                               struct cfg80211_scan_request *req)
1665 {
1666         struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1667         int ret;
1668
1669         IWL_DEBUG_MAC80211(priv, "enter\n");
1670
1671         if (req->n_channels == 0)
1672                 return -EINVAL;
1673
1674         mutex_lock(&priv->mutex);
1675
1676         /*
1677          * If an internal scan is in progress, just set
1678          * up the scan_request as per above.
1679          */
1680         if (priv->scan_type != IWL_SCAN_NORMAL) {
1681                 IWL_DEBUG_SCAN(priv,
1682                                "SCAN request during internal scan - defer\n");
1683                 priv->scan_request = req;
1684                 priv->scan_vif = vif;
1685                 ret = 0;
1686         } else {
1687                 priv->scan_request = req;
1688                 priv->scan_vif = vif;
1689                 /*
1690                  * mac80211 will only ask for one band at a time
1691                  * so using channels[0] here is ok
1692                  */
1693                 ret = iwl_scan_initiate(priv, vif, IWL_SCAN_NORMAL,
1694                                         req->channels[0]->band);
1695                 if (ret) {
1696                         priv->scan_request = NULL;
1697                         priv->scan_vif = NULL;
1698                 }
1699         }
1700
1701         IWL_DEBUG_MAC80211(priv, "leave\n");
1702
1703         mutex_unlock(&priv->mutex);
1704
1705         return ret;
1706 }
1707
1708 static void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id)
1709 {
1710         struct iwl_addsta_cmd cmd = {
1711                 .mode = STA_CONTROL_MODIFY_MSK,
1712                 .station_flags_msk = STA_FLG_PWR_SAVE_MSK,
1713                 .sta.sta_id = sta_id,
1714         };
1715
1716         iwl_send_add_sta(priv, &cmd, CMD_ASYNC);
1717 }
1718
1719 static void iwlagn_mac_sta_notify(struct ieee80211_hw *hw,
1720                                   struct ieee80211_vif *vif,
1721                                   enum sta_notify_cmd cmd,
1722                                   struct ieee80211_sta *sta)
1723 {
1724         struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1725         struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
1726         int sta_id;
1727
1728         IWL_DEBUG_MAC80211(priv, "enter\n");
1729
1730         switch (cmd) {
1731         case STA_NOTIFY_SLEEP:
1732                 WARN_ON(!sta_priv->client);
1733                 sta_priv->asleep = true;
1734                 if (atomic_read(&sta_priv->pending_frames) > 0)
1735                         ieee80211_sta_block_awake(hw, sta, true);
1736                 break;
1737         case STA_NOTIFY_AWAKE:
1738                 WARN_ON(!sta_priv->client);
1739                 if (!sta_priv->asleep)
1740                         break;
1741                 sta_priv->asleep = false;
1742                 sta_id = iwl_sta_id(sta);
1743                 if (sta_id != IWL_INVALID_STATION)
1744                         iwl_sta_modify_ps_wake(priv, sta_id);
1745                 break;
1746         default:
1747                 break;
1748         }
1749         IWL_DEBUG_MAC80211(priv, "leave\n");
1750 }
1751
1752 struct ieee80211_ops iwlagn_hw_ops = {
1753         .tx = iwlagn_mac_tx,
1754         .start = iwlagn_mac_start,
1755         .stop = iwlagn_mac_stop,
1756 #ifdef CONFIG_PM_SLEEP
1757         .suspend = iwlagn_mac_suspend,
1758         .resume = iwlagn_mac_resume,
1759         .set_wakeup = iwlagn_mac_set_wakeup,
1760 #endif
1761         .add_interface = iwlagn_mac_add_interface,
1762         .remove_interface = iwlagn_mac_remove_interface,
1763         .change_interface = iwlagn_mac_change_interface,
1764         .config = iwlagn_mac_config,
1765         .configure_filter = iwlagn_configure_filter,
1766         .set_key = iwlagn_mac_set_key,
1767         .update_tkip_key = iwlagn_mac_update_tkip_key,
1768         .set_rekey_data = iwlagn_mac_set_rekey_data,
1769         .conf_tx = iwlagn_mac_conf_tx,
1770         .bss_info_changed = iwlagn_bss_info_changed,
1771         .ampdu_action = iwlagn_mac_ampdu_action,
1772         .hw_scan = iwlagn_mac_hw_scan,
1773         .sta_notify = iwlagn_mac_sta_notify,
1774         .sta_state = iwlagn_mac_sta_state,
1775         .channel_switch = iwlagn_mac_channel_switch,
1776         .flush = iwlagn_mac_flush,
1777         .tx_last_beacon = iwlagn_mac_tx_last_beacon,
1778         .remain_on_channel = iwlagn_mac_remain_on_channel,
1779         .cancel_remain_on_channel = iwlagn_mac_cancel_remain_on_channel,
1780         .rssi_callback = iwlagn_mac_rssi_callback,
1781         CFG80211_TESTMODE_CMD(iwlagn_mac_testmode_cmd)
1782         CFG80211_TESTMODE_DUMP(iwlagn_mac_testmode_dump)
1783         .set_tim = iwlagn_mac_set_tim,
1784 };
1785
1786 /* This function both allocates and initializes hw and priv. */
1787 struct ieee80211_hw *iwl_alloc_all(void)
1788 {
1789         struct iwl_priv *priv;
1790         struct iwl_op_mode *op_mode;
1791         /* mac80211 allocates memory for this device instance, including
1792          *   space for this driver's private structure */
1793         struct ieee80211_hw *hw;
1794
1795         hw = ieee80211_alloc_hw(sizeof(struct iwl_priv) +
1796                                 sizeof(struct iwl_op_mode), &iwlagn_hw_ops);
1797         if (!hw)
1798                 goto out;
1799
1800         op_mode = hw->priv;
1801         priv = IWL_OP_MODE_GET_DVM(op_mode);
1802         priv->hw = hw;
1803
1804 out:
1805         return hw;
1806 }