Merge branch 'for-john' of git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi...
authorJohn W. Linville <linville@tuxdriver.com>
Mon, 11 Jun 2012 18:50:59 +0000 (14:50 -0400)
committerJohn W. Linville <linville@tuxdriver.com>
Mon, 11 Jun 2012 18:50:59 +0000 (14:50 -0400)
Conflicts:
drivers/net/wireless/iwlwifi/iwl-eeprom.c

1  2 
drivers/net/wireless/iwlwifi/dvm/mac80211.c

index 0000000000000000000000000000000000000000,f60be3993e8175d3e54b7d03706abbe237c6d2b9..599e8b41f5a83226273268cac97005572f127983
mode 000000,100644..100644
--- /dev/null
@@@ -1,0 -1,1630 +1,1633 @@@
+ /******************************************************************************
+  *
+  * Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved.
+  *
+  * Portions of this file are derived from the ipw3945 project, as well
+  * as portions of the ieee80211 subsystem header files.
+  *
+  * This program is free software; you can redistribute it and/or modify it
+  * under the terms of version 2 of the GNU General Public License as
+  * published by the Free Software Foundation.
+  *
+  * This program is distributed in the hope that it will be useful, but WITHOUT
+  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+  * more details.
+  *
+  * You should have received a copy of the GNU General Public License along with
+  * this program; if not, write to the Free Software Foundation, Inc.,
+  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
+  *
+  * The full GNU General Public License is included in this distribution in the
+  * file called LICENSE.
+  *
+  * Contact Information:
+  *  Intel Linux Wireless <ilw@linux.intel.com>
+  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+  *
+  *****************************************************************************/
+ #include <linux/kernel.h>
+ #include <linux/module.h>
+ #include <linux/init.h>
+ #include <linux/slab.h>
+ #include <linux/dma-mapping.h>
+ #include <linux/delay.h>
+ #include <linux/sched.h>
+ #include <linux/skbuff.h>
+ #include <linux/netdevice.h>
+ #include <linux/etherdevice.h>
+ #include <linux/if_arp.h>
+ #include <net/ieee80211_radiotap.h>
+ #include <net/mac80211.h>
+ #include <asm/div64.h>
+ #include "iwl-io.h"
+ #include "iwl-trans.h"
+ #include "iwl-op-mode.h"
+ #include "iwl-modparams.h"
+ #include "dev.h"
+ #include "calib.h"
+ #include "agn.h"
+ /*****************************************************************************
+  *
+  * mac80211 entry point functions
+  *
+  *****************************************************************************/
+ static const struct ieee80211_iface_limit iwlagn_sta_ap_limits[] = {
+       {
+               .max = 1,
+               .types = BIT(NL80211_IFTYPE_STATION),
+       },
+       {
+               .max = 1,
+               .types = BIT(NL80211_IFTYPE_AP),
+       },
+ };
+ static const struct ieee80211_iface_limit iwlagn_2sta_limits[] = {
+       {
+               .max = 2,
+               .types = BIT(NL80211_IFTYPE_STATION),
+       },
+ };
+ static const struct ieee80211_iface_limit iwlagn_p2p_sta_go_limits[] = {
+       {
+               .max = 1,
+               .types = BIT(NL80211_IFTYPE_STATION),
+       },
+       {
+               .max = 1,
+               .types = BIT(NL80211_IFTYPE_P2P_GO) |
+                        BIT(NL80211_IFTYPE_AP),
+       },
+ };
+ static const struct ieee80211_iface_limit iwlagn_p2p_2sta_limits[] = {
+       {
+               .max = 2,
+               .types = BIT(NL80211_IFTYPE_STATION),
+       },
+       {
+               .max = 1,
+               .types = BIT(NL80211_IFTYPE_P2P_CLIENT),
+       },
+ };
+ static const struct ieee80211_iface_combination
+ iwlagn_iface_combinations_dualmode[] = {
+       { .num_different_channels = 1,
+         .max_interfaces = 2,
+         .beacon_int_infra_match = true,
+         .limits = iwlagn_sta_ap_limits,
+         .n_limits = ARRAY_SIZE(iwlagn_sta_ap_limits),
+       },
+       { .num_different_channels = 1,
+         .max_interfaces = 2,
+         .limits = iwlagn_2sta_limits,
+         .n_limits = ARRAY_SIZE(iwlagn_2sta_limits),
+       },
+ };
+ static const struct ieee80211_iface_combination
+ iwlagn_iface_combinations_p2p[] = {
+       { .num_different_channels = 1,
+         .max_interfaces = 2,
+         .beacon_int_infra_match = true,
+         .limits = iwlagn_p2p_sta_go_limits,
+         .n_limits = ARRAY_SIZE(iwlagn_p2p_sta_go_limits),
+       },
+       { .num_different_channels = 1,
+         .max_interfaces = 2,
+         .limits = iwlagn_p2p_2sta_limits,
+         .n_limits = ARRAY_SIZE(iwlagn_p2p_2sta_limits),
+       },
+ };
+ /*
+  * Not a mac80211 entry point function, but it fits in with all the
+  * other mac80211 functions grouped here.
+  */
+ int iwlagn_mac_setup_register(struct iwl_priv *priv,
+                             const struct iwl_ucode_capabilities *capa)
+ {
+       int ret;
+       struct ieee80211_hw *hw = priv->hw;
+       struct iwl_rxon_context *ctx;
+       hw->rate_control_algorithm = "iwl-agn-rs";
+       /* Tell mac80211 our characteristics */
+       hw->flags = IEEE80211_HW_SIGNAL_DBM |
+                   IEEE80211_HW_AMPDU_AGGREGATION |
+                   IEEE80211_HW_NEED_DTIM_PERIOD |
+                   IEEE80211_HW_SPECTRUM_MGMT |
+                   IEEE80211_HW_REPORTS_TX_ACK_STATUS |
+                   IEEE80211_HW_QUEUE_CONTROL |
+                   IEEE80211_HW_SUPPORTS_PS |
+                   IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
+                   IEEE80211_HW_WANT_MONITOR_VIF |
+                   IEEE80211_HW_SCAN_WHILE_IDLE;
+       hw->offchannel_tx_hw_queue = IWL_AUX_QUEUE;
+       hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FMT;
+       /*
+        * Including the following line will crash some AP's.  This
+        * workaround removes the stimulus which causes the crash until
+        * the AP software can be fixed.
+       hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
+        */
+       if (priv->hw_params.sku & EEPROM_SKU_CAP_11N_ENABLE)
+               hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
+                            IEEE80211_HW_SUPPORTS_STATIC_SMPS;
+ #ifndef CONFIG_IWLWIFI_EXPERIMENTAL_MFP
+       /* enable 11w if the uCode advertise */
+       if (capa->flags & IWL_UCODE_TLV_FLAGS_MFP)
+ #endif /* !CONFIG_IWLWIFI_EXPERIMENTAL_MFP */
+               hw->flags |= IEEE80211_HW_MFP_CAPABLE;
+       hw->sta_data_size = sizeof(struct iwl_station_priv);
+       hw->vif_data_size = sizeof(struct iwl_vif_priv);
+       for_each_context(priv, ctx) {
+               hw->wiphy->interface_modes |= ctx->interface_modes;
+               hw->wiphy->interface_modes |= ctx->exclusive_interface_modes;
+       }
+       BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
+       if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)) {
+               hw->wiphy->iface_combinations = iwlagn_iface_combinations_p2p;
+               hw->wiphy->n_iface_combinations =
+                       ARRAY_SIZE(iwlagn_iface_combinations_p2p);
+       } else if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
+               hw->wiphy->iface_combinations =
+                       iwlagn_iface_combinations_dualmode;
+               hw->wiphy->n_iface_combinations =
+                       ARRAY_SIZE(iwlagn_iface_combinations_dualmode);
+       }
+       hw->wiphy->max_remain_on_channel_duration = 1000;
+       hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
+                           WIPHY_FLAG_DISABLE_BEACON_HINTS |
+                           WIPHY_FLAG_IBSS_RSN;
++#ifdef CONFIG_PM_SLEEP
+       if (priv->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
+           priv->trans->ops->wowlan_suspend &&
+           device_can_wakeup(priv->trans->dev)) {
+               hw->wiphy->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
+                                         WIPHY_WOWLAN_DISCONNECT |
+                                         WIPHY_WOWLAN_EAP_IDENTITY_REQ |
+                                         WIPHY_WOWLAN_RFKILL_RELEASE;
+               if (!iwlwifi_mod_params.sw_crypto)
+                       hw->wiphy->wowlan.flags |=
+                               WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
+                               WIPHY_WOWLAN_GTK_REKEY_FAILURE;
+               hw->wiphy->wowlan.n_patterns = IWLAGN_WOWLAN_MAX_PATTERNS;
+               hw->wiphy->wowlan.pattern_min_len =
+                                       IWLAGN_WOWLAN_MIN_PATTERN_LEN;
+               hw->wiphy->wowlan.pattern_max_len =
+                                       IWLAGN_WOWLAN_MAX_PATTERN_LEN;
+       }
++#endif
+       if (iwlwifi_mod_params.power_save)
+               hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
+       else
+               hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
+       hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
+       /* we create the 802.11 header and a max-length SSID element */
+       hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 34;
+       /*
+        * We don't use all queues: 4 and 9 are unused and any
+        * aggregation queue gets mapped down to the AC queue.
+        */
+       hw->queues = IWLAGN_FIRST_AMPDU_QUEUE;
+       hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
+       if (priv->eeprom_data->bands[IEEE80211_BAND_2GHZ].n_channels)
+               priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
+                       &priv->eeprom_data->bands[IEEE80211_BAND_2GHZ];
+       if (priv->eeprom_data->bands[IEEE80211_BAND_5GHZ].n_channels)
+               priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
+                       &priv->eeprom_data->bands[IEEE80211_BAND_5GHZ];
+       hw->wiphy->hw_version = priv->trans->hw_id;
+       iwl_leds_init(priv);
+       ret = ieee80211_register_hw(priv->hw);
+       if (ret) {
+               IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
++              iwl_leds_exit(priv);
+               return ret;
+       }
+       priv->mac80211_registered = 1;
+       return 0;
+ }
+ void iwlagn_mac_unregister(struct iwl_priv *priv)
+ {
+       if (!priv->mac80211_registered)
+               return;
+       iwl_leds_exit(priv);
+       ieee80211_unregister_hw(priv->hw);
+       priv->mac80211_registered = 0;
+ }
+ static int __iwl_up(struct iwl_priv *priv)
+ {
+       struct iwl_rxon_context *ctx;
+       int ret;
+       lockdep_assert_held(&priv->mutex);
+       if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
+               IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
+               return -EIO;
+       }
+       for_each_context(priv, ctx) {
+               ret = iwlagn_alloc_bcast_station(priv, ctx);
+               if (ret) {
+                       iwl_dealloc_bcast_stations(priv);
+                       return ret;
+               }
+       }
+       ret = iwl_run_init_ucode(priv);
+       if (ret) {
+               IWL_ERR(priv, "Failed to run INIT ucode: %d\n", ret);
+               goto error;
+       }
+       ret = iwl_load_ucode_wait_alive(priv, IWL_UCODE_REGULAR);
+       if (ret) {
+               IWL_ERR(priv, "Failed to start RT ucode: %d\n", ret);
+               goto error;
+       }
+       ret = iwl_alive_start(priv);
+       if (ret)
+               goto error;
+       return 0;
+  error:
+       set_bit(STATUS_EXIT_PENDING, &priv->status);
+       iwl_down(priv);
+       clear_bit(STATUS_EXIT_PENDING, &priv->status);
+       IWL_ERR(priv, "Unable to initialize device.\n");
+       return ret;
+ }
+ static int iwlagn_mac_start(struct ieee80211_hw *hw)
+ {
+       struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
+       int ret;
+       IWL_DEBUG_MAC80211(priv, "enter\n");
+       /* we should be verifying the device is ready to be opened */
+       mutex_lock(&priv->mutex);
+       ret = __iwl_up(priv);
+       mutex_unlock(&priv->mutex);
+       if (ret)
+               return ret;
+       IWL_DEBUG_INFO(priv, "Start UP work done.\n");
+       /* Now we should be done, and the READY bit should be set. */
+       if (WARN_ON(!test_bit(STATUS_READY, &priv->status)))
+               ret = -EIO;
+       iwlagn_led_enable(priv);
+       priv->is_open = 1;
+       IWL_DEBUG_MAC80211(priv, "leave\n");
+       return 0;
+ }
+ static void iwlagn_mac_stop(struct ieee80211_hw *hw)
+ {
+       struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
+       IWL_DEBUG_MAC80211(priv, "enter\n");
+       if (!priv->is_open)
+               return;
+       priv->is_open = 0;
+       mutex_lock(&priv->mutex);
+       iwl_down(priv);
+       mutex_unlock(&priv->mutex);
+       iwl_cancel_deferred_work(priv);
+       flush_workqueue(priv->workqueue);
+       /* User space software may expect getting rfkill changes
+        * even if interface is down, trans->down will leave the RF
+        * kill interrupt enabled
+        */
+       iwl_trans_stop_hw(priv->trans, false);
+       IWL_DEBUG_MAC80211(priv, "leave\n");
+ }
+ static void iwlagn_mac_set_rekey_data(struct ieee80211_hw *hw,
+                                     struct ieee80211_vif *vif,
+                                     struct cfg80211_gtk_rekey_data *data)
+ {
+       struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
+       if (iwlwifi_mod_params.sw_crypto)
+               return;
+       IWL_DEBUG_MAC80211(priv, "enter\n");
+       mutex_lock(&priv->mutex);
+       if (priv->contexts[IWL_RXON_CTX_BSS].vif != vif)
+               goto out;
+       memcpy(priv->kek, data->kek, NL80211_KEK_LEN);
+       memcpy(priv->kck, data->kck, NL80211_KCK_LEN);
+       priv->replay_ctr =
+               cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr));
+       priv->have_rekey_data = true;
+  out:
+       mutex_unlock(&priv->mutex);
+       IWL_DEBUG_MAC80211(priv, "leave\n");
+ }
+ #ifdef CONFIG_PM_SLEEP
+ static int iwlagn_mac_suspend(struct ieee80211_hw *hw,
+                             struct cfg80211_wowlan *wowlan)
+ {
+       struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
+       struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
+       int ret;
+       if (WARN_ON(!wowlan))
+               return -EINVAL;
+       IWL_DEBUG_MAC80211(priv, "enter\n");
+       mutex_lock(&priv->mutex);
+       /* Don't attempt WoWLAN when not associated, tear down instead. */
+       if (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION ||
+           !iwl_is_associated_ctx(ctx)) {
+               ret = 1;
+               goto out;
+       }
+       ret = iwlagn_suspend(priv, wowlan);
+       if (ret)
+               goto error;
+       iwl_trans_wowlan_suspend(priv->trans);
+       goto out;
+  error:
+       priv->wowlan = false;
+       iwlagn_prepare_restart(priv);
+       ieee80211_restart_hw(priv->hw);
+  out:
+       mutex_unlock(&priv->mutex);
+       IWL_DEBUG_MAC80211(priv, "leave\n");
+       return ret;
+ }
+ static int iwlagn_mac_resume(struct ieee80211_hw *hw)
+ {
+       struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
+       struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
+       struct ieee80211_vif *vif;
+       unsigned long flags;
+       u32 base, status = 0xffffffff;
+       int ret = -EIO;
+       IWL_DEBUG_MAC80211(priv, "enter\n");
+       mutex_lock(&priv->mutex);
+       iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_CLR,
+                         CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
+       base = priv->device_pointers.error_event_table;
+       if (iwlagn_hw_valid_rtc_data_addr(base)) {
+               spin_lock_irqsave(&priv->trans->reg_lock, flags);
+               ret = iwl_grab_nic_access_silent(priv->trans);
+               if (likely(ret == 0)) {
+                       iwl_write32(priv->trans, HBUS_TARG_MEM_RADDR, base);
+                       status = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
+                       iwl_release_nic_access(priv->trans);
+               }
+               spin_unlock_irqrestore(&priv->trans->reg_lock, flags);
+ #ifdef CONFIG_IWLWIFI_DEBUGFS
+               if (ret == 0) {
+                       const struct fw_img *img;
+                       img = &(priv->fw->img[IWL_UCODE_WOWLAN]);
+                       if (!priv->wowlan_sram) {
+                               priv->wowlan_sram =
+                                  kzalloc(img->sec[IWL_UCODE_SECTION_DATA].len,
+                                               GFP_KERNEL);
+                       }
+                       if (priv->wowlan_sram)
+                               _iwl_read_targ_mem_words(
+                                     priv->trans, 0x800000,
+                                     priv->wowlan_sram,
+                                     img->sec[IWL_UCODE_SECTION_DATA].len / 4);
+               }
+ #endif
+       }
+       /* we'll clear ctx->vif during iwlagn_prepare_restart() */
+       vif = ctx->vif;
+       priv->wowlan = false;
+       iwlagn_prepare_restart(priv);
+       memset((void *)&ctx->active, 0, sizeof(ctx->active));
+       iwl_connection_init_rx_config(priv, ctx);
+       iwlagn_set_rxon_chain(priv, ctx);
+       mutex_unlock(&priv->mutex);
+       IWL_DEBUG_MAC80211(priv, "leave\n");
+       ieee80211_resume_disconnect(vif);
+       return 1;
+ }
+ static void iwlagn_mac_set_wakeup(struct ieee80211_hw *hw, bool enabled)
+ {
+       struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
+       device_set_wakeup_enable(priv->trans->dev, enabled);
+ }
+ #endif
+ static void iwlagn_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
+ {
+       struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
+       IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
+                    ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
+       if (iwlagn_tx_skb(priv, skb))
+               dev_kfree_skb_any(skb);
+ }
+ static void iwlagn_mac_update_tkip_key(struct ieee80211_hw *hw,
+                                      struct ieee80211_vif *vif,
+                                      struct ieee80211_key_conf *keyconf,
+                                      struct ieee80211_sta *sta,
+                                      u32 iv32, u16 *phase1key)
+ {
+       struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
+       iwl_update_tkip_key(priv, vif, keyconf, sta, iv32, phase1key);
+ }
+ static int iwlagn_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
+                             struct ieee80211_vif *vif,
+                             struct ieee80211_sta *sta,
+                             struct ieee80211_key_conf *key)
+ {
+       struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
+       struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
+       struct iwl_rxon_context *ctx = vif_priv->ctx;
+       int ret;
+       bool is_default_wep_key = false;
+       IWL_DEBUG_MAC80211(priv, "enter\n");
+       if (iwlwifi_mod_params.sw_crypto) {
+               IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
+               return -EOPNOTSUPP;
+       }
+       switch (key->cipher) {
+       case WLAN_CIPHER_SUITE_TKIP:
+               key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
+               /* fall through */
+       case WLAN_CIPHER_SUITE_CCMP:
+               key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
+               break;
+       default:
+               break;
+       }
+       /*
+        * We could program these keys into the hardware as well, but we
+        * don't expect much multicast traffic in IBSS and having keys
+        * for more stations is probably more useful.
+        *
+        * Mark key TX-only and return 0.
+        */
+       if (vif->type == NL80211_IFTYPE_ADHOC &&
+           !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
+               key->hw_key_idx = WEP_INVALID_OFFSET;
+               return 0;
+       }
+       /* If they key was TX-only, accept deletion */
+       if (cmd == DISABLE_KEY && key->hw_key_idx == WEP_INVALID_OFFSET)
+               return 0;
+       mutex_lock(&priv->mutex);
+       iwl_scan_cancel_timeout(priv, 100);
+       BUILD_BUG_ON(WEP_INVALID_OFFSET == IWLAGN_HW_KEY_DEFAULT);
+       /*
+        * If we are getting WEP group key and we didn't receive any key mapping
+        * so far, we are in legacy wep mode (group key only), otherwise we are
+        * in 1X mode.
+        * In legacy wep mode, we use another host command to the uCode.
+        */
+       if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
+            key->cipher == WLAN_CIPHER_SUITE_WEP104) && !sta) {
+               if (cmd == SET_KEY)
+                       is_default_wep_key = !ctx->key_mapping_keys;
+               else
+                       is_default_wep_key =
+                               key->hw_key_idx == IWLAGN_HW_KEY_DEFAULT;
+       }
+       switch (cmd) {
+       case SET_KEY:
+               if (is_default_wep_key) {
+                       ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
+                       break;
+               }
+               ret = iwl_set_dynamic_key(priv, vif_priv->ctx, key, sta);
+               if (ret) {
+                       /*
+                        * can't add key for RX, but we don't need it
+                        * in the device for TX so still return 0
+                        */
+                       ret = 0;
+                       key->hw_key_idx = WEP_INVALID_OFFSET;
+               }
+               IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
+               break;
+       case DISABLE_KEY:
+               if (is_default_wep_key)
+                       ret = iwl_remove_default_wep_key(priv, ctx, key);
+               else
+                       ret = iwl_remove_dynamic_key(priv, ctx, key, sta);
+               IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
+               break;
+       default:
+               ret = -EINVAL;
+       }
+       mutex_unlock(&priv->mutex);
+       IWL_DEBUG_MAC80211(priv, "leave\n");
+       return ret;
+ }
+ static int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw,
+                                  struct ieee80211_vif *vif,
+                                  enum ieee80211_ampdu_mlme_action action,
+                                  struct ieee80211_sta *sta, u16 tid, u16 *ssn,
+                                  u8 buf_size)
+ {
+       struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
+       int ret = -EINVAL;
+       struct iwl_station_priv *sta_priv = (void *) sta->drv_priv;
+       IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
+                    sta->addr, tid);
+       if (!(priv->hw_params.sku & EEPROM_SKU_CAP_11N_ENABLE))
+               return -EACCES;
+       IWL_DEBUG_MAC80211(priv, "enter\n");
+       mutex_lock(&priv->mutex);
+       switch (action) {
+       case IEEE80211_AMPDU_RX_START:
+               if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
+                       break;
+               IWL_DEBUG_HT(priv, "start Rx\n");
+               ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
+               break;
+       case IEEE80211_AMPDU_RX_STOP:
+               IWL_DEBUG_HT(priv, "stop Rx\n");
+               ret = iwl_sta_rx_agg_stop(priv, sta, tid);
+               break;
+       case IEEE80211_AMPDU_TX_START:
+               if (!priv->trans->ops->txq_enable)
+                       break;
+               if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
+                       break;
+               IWL_DEBUG_HT(priv, "start Tx\n");
+               ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
+               break;
+       case IEEE80211_AMPDU_TX_STOP:
+               IWL_DEBUG_HT(priv, "stop Tx\n");
+               ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
+               if ((ret == 0) && (priv->agg_tids_count > 0)) {
+                       priv->agg_tids_count--;
+                       IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
+                                    priv->agg_tids_count);
+               }
+               if (!priv->agg_tids_count &&
+                   priv->hw_params.use_rts_for_aggregation) {
+                       /*
+                        * switch off RTS/CTS if it was previously enabled
+                        */
+                       sta_priv->lq_sta.lq.general_params.flags &=
+                               ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
+                       iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
+                                       &sta_priv->lq_sta.lq, CMD_ASYNC, false);
+               }
+               break;
+       case IEEE80211_AMPDU_TX_OPERATIONAL:
+               ret = iwlagn_tx_agg_oper(priv, vif, sta, tid, buf_size);
+               break;
+       }
+       mutex_unlock(&priv->mutex);
+       IWL_DEBUG_MAC80211(priv, "leave\n");
+       return ret;
+ }
+ static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
+                             struct ieee80211_vif *vif,
+                             struct ieee80211_sta *sta)
+ {
+       struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
+       struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
+       struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
+       bool is_ap = vif->type == NL80211_IFTYPE_STATION;
+       int ret;
+       u8 sta_id;
+       IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
+                       sta->addr);
+       sta_priv->sta_id = IWL_INVALID_STATION;
+       atomic_set(&sta_priv->pending_frames, 0);
+       if (vif->type == NL80211_IFTYPE_AP)
+               sta_priv->client = true;
+       ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
+                                    is_ap, sta, &sta_id);
+       if (ret) {
+               IWL_ERR(priv, "Unable to add station %pM (%d)\n",
+                       sta->addr, ret);
+               /* Should we return success if return code is EEXIST ? */
+               return ret;
+       }
+       sta_priv->sta_id = sta_id;
+       return 0;
+ }
+ static int iwlagn_mac_sta_remove(struct ieee80211_hw *hw,
+                                struct ieee80211_vif *vif,
+                                struct ieee80211_sta *sta)
+ {
+       struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
+       struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
+       int ret;
+       IWL_DEBUG_INFO(priv, "proceeding to remove station %pM\n", sta->addr);
+       if (vif->type == NL80211_IFTYPE_STATION) {
+               /*
+                * Station will be removed from device when the RXON
+                * is set to unassociated -- just deactivate it here
+                * to avoid re-programming it.
+                */
+               ret = 0;
+               iwl_deactivate_station(priv, sta_priv->sta_id, sta->addr);
+       } else {
+               ret = iwl_remove_station(priv, sta_priv->sta_id, sta->addr);
+               if (ret)
+                       IWL_DEBUG_QUIET_RFKILL(priv,
+                               "Error removing station %pM\n", sta->addr);
+       }
+       return ret;
+ }
+ static int iwlagn_mac_sta_state(struct ieee80211_hw *hw,
+                               struct ieee80211_vif *vif,
+                               struct ieee80211_sta *sta,
+                               enum ieee80211_sta_state old_state,
+                               enum ieee80211_sta_state new_state)
+ {
+       struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
+       struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
+       enum {
+               NONE, ADD, REMOVE, HT_RATE_INIT, ADD_RATE_INIT,
+       } op = NONE;
+       int ret;
+       IWL_DEBUG_MAC80211(priv, "station %pM state change %d->%d\n",
+                          sta->addr, old_state, new_state);
+       mutex_lock(&priv->mutex);
+       if (vif->type == NL80211_IFTYPE_STATION) {
+               if (old_state == IEEE80211_STA_NOTEXIST &&
+                   new_state == IEEE80211_STA_NONE)
+                       op = ADD;
+               else if (old_state == IEEE80211_STA_NONE &&
+                        new_state == IEEE80211_STA_NOTEXIST)
+                       op = REMOVE;
+               else if (old_state == IEEE80211_STA_AUTH &&
+                        new_state == IEEE80211_STA_ASSOC)
+                       op = HT_RATE_INIT;
+       } else {
+               if (old_state == IEEE80211_STA_AUTH &&
+                   new_state == IEEE80211_STA_ASSOC)
+                       op = ADD_RATE_INIT;
+               else if (old_state == IEEE80211_STA_ASSOC &&
+                        new_state == IEEE80211_STA_AUTH)
+                       op = REMOVE;
+       }
+       switch (op) {
+       case ADD:
+               ret = iwlagn_mac_sta_add(hw, vif, sta);
+               break;
+       case REMOVE:
+               ret = iwlagn_mac_sta_remove(hw, vif, sta);
+               break;
+       case ADD_RATE_INIT:
+               ret = iwlagn_mac_sta_add(hw, vif, sta);
+               if (ret)
+                       break;
+               /* Initialize rate scaling */
+               IWL_DEBUG_INFO(priv,
+                              "Initializing rate scaling for station %pM\n",
+                              sta->addr);
+               iwl_rs_rate_init(priv, sta, iwl_sta_id(sta));
+               ret = 0;
+               break;
+       case HT_RATE_INIT:
+               /* Initialize rate scaling */
+               ret = iwl_sta_update_ht(priv, vif_priv->ctx, sta);
+               if (ret)
+                       break;
+               IWL_DEBUG_INFO(priv,
+                              "Initializing rate scaling for station %pM\n",
+                              sta->addr);
+               iwl_rs_rate_init(priv, sta, iwl_sta_id(sta));
+               ret = 0;
+               break;
+       default:
+               ret = 0;
+               break;
+       }
+       /*
+        * mac80211 might WARN if we fail, but due the way we
+        * (badly) handle hard rfkill, we might fail here
+        */
+       if (iwl_is_rfkill(priv))
+               ret = 0;
+       mutex_unlock(&priv->mutex);
+       IWL_DEBUG_MAC80211(priv, "leave\n");
+       return ret;
+ }
+ static void iwlagn_mac_channel_switch(struct ieee80211_hw *hw,
+                                     struct ieee80211_channel_switch *ch_switch)
+ {
+       struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
+       struct ieee80211_conf *conf = &hw->conf;
+       struct ieee80211_channel *channel = ch_switch->channel;
+       struct iwl_ht_config *ht_conf = &priv->current_ht_config;
+       /*
+        * MULTI-FIXME
+        * When we add support for multiple interfaces, we need to
+        * revisit this. The channel switch command in the device
+        * only affects the BSS context, but what does that really
+        * mean? And what if we get a CSA on the second interface?
+        * This needs a lot of work.
+        */
+       struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
+       u16 ch;
+       IWL_DEBUG_MAC80211(priv, "enter\n");
+       mutex_lock(&priv->mutex);
+       if (iwl_is_rfkill(priv))
+               goto out;
+       if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
+           test_bit(STATUS_SCANNING, &priv->status) ||
+           test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status))
+               goto out;
+       if (!iwl_is_associated_ctx(ctx))
+               goto out;
+       if (!priv->lib->set_channel_switch)
+               goto out;
+       ch = channel->hw_value;
+       if (le16_to_cpu(ctx->active.channel) == ch)
+               goto out;
+       priv->current_ht_config.smps = conf->smps_mode;
+       /* Configure HT40 channels */
+       ctx->ht.enabled = conf_is_ht(conf);
+       if (ctx->ht.enabled)
+               iwlagn_config_ht40(conf, ctx);
+       else
+               ctx->ht.is_40mhz = false;
+       if ((le16_to_cpu(ctx->staging.channel) != ch))
+               ctx->staging.flags = 0;
+       iwl_set_rxon_channel(priv, channel, ctx);
+       iwl_set_rxon_ht(priv, ht_conf);
+       iwl_set_flags_for_band(priv, ctx, channel->band, ctx->vif);
+       /*
+        * at this point, staging_rxon has the
+        * configuration for channel switch
+        */
+       set_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
+       priv->switch_channel = cpu_to_le16(ch);
+       if (priv->lib->set_channel_switch(priv, ch_switch)) {
+               clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
+               priv->switch_channel = 0;
+               ieee80211_chswitch_done(ctx->vif, false);
+       }
+ out:
+       mutex_unlock(&priv->mutex);
+       IWL_DEBUG_MAC80211(priv, "leave\n");
+ }
+ void iwl_chswitch_done(struct iwl_priv *priv, bool is_success)
+ {
+       /*
+        * MULTI-FIXME
+        * See iwlagn_mac_channel_switch.
+        */
+       struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
+       if (test_bit(STATUS_EXIT_PENDING, &priv->status))
+               return;
+       if (test_and_clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status))
+               ieee80211_chswitch_done(ctx->vif, is_success);
+ }
+ static void iwlagn_configure_filter(struct ieee80211_hw *hw,
+                                   unsigned int changed_flags,
+                                   unsigned int *total_flags,
+                                   u64 multicast)
+ {
+       struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
+       __le32 filter_or = 0, filter_nand = 0;
+       struct iwl_rxon_context *ctx;
+ #define CHK(test, flag)       do { \
+       if (*total_flags & (test))              \
+               filter_or |= (flag);            \
+       else                                    \
+               filter_nand |= (flag);          \
+       } while (0)
+       IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
+                       changed_flags, *total_flags);
+       CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
+       /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
+       CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK);
+       CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
+ #undef CHK
+       mutex_lock(&priv->mutex);
+       for_each_context(priv, ctx) {
+               ctx->staging.filter_flags &= ~filter_nand;
+               ctx->staging.filter_flags |= filter_or;
+               /*
+                * Not committing directly because hardware can perform a scan,
+                * but we'll eventually commit the filter flags change anyway.
+                */
+       }
+       mutex_unlock(&priv->mutex);
+       /*
+        * Receiving all multicast frames is always enabled by the
+        * default flags setup in iwl_connection_init_rx_config()
+        * since we currently do not support programming multicast
+        * filters into the device.
+        */
+       *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
+                       FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
+ }
+ static void iwlagn_mac_flush(struct ieee80211_hw *hw, bool drop)
+ {
+       struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
+       mutex_lock(&priv->mutex);
+       IWL_DEBUG_MAC80211(priv, "enter\n");
+       if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
+               IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
+               goto done;
+       }
+       if (iwl_is_rfkill(priv)) {
+               IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
+               goto done;
+       }
+       /*
+        * mac80211 will not push any more frames for transmit
+        * until the flush is completed
+        */
+       if (drop) {
+               IWL_DEBUG_MAC80211(priv, "send flush command\n");
+               if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) {
+                       IWL_ERR(priv, "flush request fail\n");
+                       goto done;
+               }
+       }
+       IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
+       iwl_trans_wait_tx_queue_empty(priv->trans);
+ done:
+       mutex_unlock(&priv->mutex);
+       IWL_DEBUG_MAC80211(priv, "leave\n");
+ }
+ static int iwlagn_mac_remain_on_channel(struct ieee80211_hw *hw,
+                                    struct ieee80211_channel *channel,
+                                    enum nl80211_channel_type channel_type,
+                                    int duration)
+ {
+       struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
+       struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
+       int err = 0;
+       if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
+               return -EOPNOTSUPP;
+       if (!(ctx->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)))
+               return -EOPNOTSUPP;
+       IWL_DEBUG_MAC80211(priv, "enter\n");
+       mutex_lock(&priv->mutex);
+       if (test_bit(STATUS_SCAN_HW, &priv->status)) {
+               err = -EBUSY;
+               goto out;
+       }
+       priv->hw_roc_channel = channel;
+       priv->hw_roc_chantype = channel_type;
+       /* convert from ms to TU */
+       priv->hw_roc_duration = DIV_ROUND_UP(1000 * duration, 1024);
+       priv->hw_roc_start_notified = false;
+       cancel_delayed_work(&priv->hw_roc_disable_work);
+       if (!ctx->is_active) {
+               static const struct iwl_qos_info default_qos_data = {
+                       .def_qos_parm = {
+                               .ac[0] = {
+                                       .cw_min = cpu_to_le16(3),
+                                       .cw_max = cpu_to_le16(7),
+                                       .aifsn = 2,
+                                       .edca_txop = cpu_to_le16(1504),
+                               },
+                               .ac[1] = {
+                                       .cw_min = cpu_to_le16(7),
+                                       .cw_max = cpu_to_le16(15),
+                                       .aifsn = 2,
+                                       .edca_txop = cpu_to_le16(3008),
+                               },
+                               .ac[2] = {
+                                       .cw_min = cpu_to_le16(15),
+                                       .cw_max = cpu_to_le16(1023),
+                                       .aifsn = 3,
+                               },
+                               .ac[3] = {
+                                       .cw_min = cpu_to_le16(15),
+                                       .cw_max = cpu_to_le16(1023),
+                                       .aifsn = 7,
+                               },
+                       },
+               };
+               ctx->is_active = true;
+               ctx->qos_data = default_qos_data;
+               ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
+               memcpy(ctx->staging.node_addr,
+                      priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
+                      ETH_ALEN);
+               memcpy(ctx->staging.bssid_addr,
+                      priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
+                      ETH_ALEN);
+               err = iwlagn_commit_rxon(priv, ctx);
+               if (err)
+                       goto out;
+               ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK |
+                                            RXON_FILTER_PROMISC_MSK |
+                                            RXON_FILTER_CTL2HOST_MSK;
+               err = iwlagn_commit_rxon(priv, ctx);
+               if (err) {
+                       iwlagn_disable_roc(priv);
+                       goto out;
+               }
+               priv->hw_roc_setup = true;
+       }
+       err = iwl_scan_initiate(priv, ctx->vif, IWL_SCAN_ROC, channel->band);
+       if (err)
+               iwlagn_disable_roc(priv);
+  out:
+       mutex_unlock(&priv->mutex);
+       IWL_DEBUG_MAC80211(priv, "leave\n");
+       return err;
+ }
+ static int iwlagn_mac_cancel_remain_on_channel(struct ieee80211_hw *hw)
+ {
+       struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
+       if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
+               return -EOPNOTSUPP;
+       IWL_DEBUG_MAC80211(priv, "enter\n");
+       mutex_lock(&priv->mutex);
+       iwl_scan_cancel_timeout(priv, priv->hw_roc_duration);
+       iwlagn_disable_roc(priv);
+       mutex_unlock(&priv->mutex);
+       IWL_DEBUG_MAC80211(priv, "leave\n");
+       return 0;
+ }
+ static void iwlagn_mac_rssi_callback(struct ieee80211_hw *hw,
+                                    enum ieee80211_rssi_event rssi_event)
+ {
+       struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
+       IWL_DEBUG_MAC80211(priv, "enter\n");
+       mutex_lock(&priv->mutex);
+       if (priv->cfg->bt_params &&
+                       priv->cfg->bt_params->advanced_bt_coexist) {
+               if (rssi_event == RSSI_EVENT_LOW)
+                       priv->bt_enable_pspoll = true;
+               else if (rssi_event == RSSI_EVENT_HIGH)
+                       priv->bt_enable_pspoll = false;
+               iwlagn_send_advance_bt_config(priv);
+       } else {
+               IWL_DEBUG_MAC80211(priv, "Advanced BT coex disabled,"
+                               "ignoring RSSI callback\n");
+       }
+       mutex_unlock(&priv->mutex);
+       IWL_DEBUG_MAC80211(priv, "leave\n");
+ }
+ static int iwlagn_mac_set_tim(struct ieee80211_hw *hw,
+                             struct ieee80211_sta *sta, bool set)
+ {
+       struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
+       queue_work(priv->workqueue, &priv->beacon_update);
+       return 0;
+ }
+ static int iwlagn_mac_conf_tx(struct ieee80211_hw *hw,
+                             struct ieee80211_vif *vif, u16 queue,
+                             const struct ieee80211_tx_queue_params *params)
+ {
+       struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
+       struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
+       struct iwl_rxon_context *ctx = vif_priv->ctx;
+       int q;
+       if (WARN_ON(!ctx))
+               return -EINVAL;
+       IWL_DEBUG_MAC80211(priv, "enter\n");
+       if (!iwl_is_ready_rf(priv)) {
+               IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
+               return -EIO;
+       }
+       if (queue >= AC_NUM) {
+               IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
+               return 0;
+       }
+       q = AC_NUM - 1 - queue;
+       mutex_lock(&priv->mutex);
+       ctx->qos_data.def_qos_parm.ac[q].cw_min =
+               cpu_to_le16(params->cw_min);
+       ctx->qos_data.def_qos_parm.ac[q].cw_max =
+               cpu_to_le16(params->cw_max);
+       ctx->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
+       ctx->qos_data.def_qos_parm.ac[q].edca_txop =
+                       cpu_to_le16((params->txop * 32));
+       ctx->qos_data.def_qos_parm.ac[q].reserved1 = 0;
+       mutex_unlock(&priv->mutex);
+       IWL_DEBUG_MAC80211(priv, "leave\n");
+       return 0;
+ }
+ static int iwlagn_mac_tx_last_beacon(struct ieee80211_hw *hw)
+ {
+       struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
+       return priv->ibss_manager == IWL_IBSS_MANAGER;
+ }
+ static int iwl_set_mode(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
+ {
+       iwl_connection_init_rx_config(priv, ctx);
+       iwlagn_set_rxon_chain(priv, ctx);
+       return iwlagn_commit_rxon(priv, ctx);
+ }
+ static int iwl_setup_interface(struct iwl_priv *priv,
+                              struct iwl_rxon_context *ctx)
+ {
+       struct ieee80211_vif *vif = ctx->vif;
+       int err, ac;
+       lockdep_assert_held(&priv->mutex);
+       /*
+        * This variable will be correct only when there's just
+        * a single context, but all code using it is for hardware
+        * that supports only one context.
+        */
+       priv->iw_mode = vif->type;
+       ctx->is_active = true;
+       err = iwl_set_mode(priv, ctx);
+       if (err) {
+               if (!ctx->always_active)
+                       ctx->is_active = false;
+               return err;
+       }
+       if (priv->cfg->bt_params && priv->cfg->bt_params->advanced_bt_coexist &&
+           vif->type == NL80211_IFTYPE_ADHOC) {
+               /*
+                * pretend to have high BT traffic as long as we
+                * are operating in IBSS mode, as this will cause
+                * the rate scaling etc. to behave as intended.
+                */
+               priv->bt_traffic_load = IWL_BT_COEX_TRAFFIC_LOAD_HIGH;
+       }
+       /* set up queue mappings */
+       for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
+               vif->hw_queue[ac] = ctx->ac_to_queue[ac];
+       if (vif->type == NL80211_IFTYPE_AP)
+               vif->cab_queue = ctx->mcast_queue;
+       else
+               vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
+       return 0;
+ }
+ static int iwlagn_mac_add_interface(struct ieee80211_hw *hw,
+                                   struct ieee80211_vif *vif)
+ {
+       struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
+       struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
+       struct iwl_rxon_context *tmp, *ctx = NULL;
+       int err;
+       enum nl80211_iftype viftype = ieee80211_vif_type_p2p(vif);
+       bool reset = false;
+       IWL_DEBUG_MAC80211(priv, "enter: type %d, addr %pM\n",
+                          viftype, vif->addr);
+       cancel_delayed_work_sync(&priv->hw_roc_disable_work);
+       mutex_lock(&priv->mutex);
+       iwlagn_disable_roc(priv);
+       if (!iwl_is_ready_rf(priv)) {
+               IWL_WARN(priv, "Try to add interface when device not ready\n");
+               err = -EINVAL;
+               goto out;
+       }
+       for_each_context(priv, tmp) {
+               u32 possible_modes =
+                       tmp->interface_modes | tmp->exclusive_interface_modes;
+               if (tmp->vif) {
+                       /* On reset we need to add the same interface again */
+                       if (tmp->vif == vif) {
+                               reset = true;
+                               ctx = tmp;
+                               break;
+                       }
+                       /* check if this busy context is exclusive */
+                       if (tmp->exclusive_interface_modes &
+                                               BIT(tmp->vif->type)) {
+                               err = -EINVAL;
+                               goto out;
+                       }
+                       continue;
+               }
+               if (!(possible_modes & BIT(viftype)))
+                       continue;
+               /* have maybe usable context w/o interface */
+               ctx = tmp;
+               break;
+       }
+       if (!ctx) {
+               err = -EOPNOTSUPP;
+               goto out;
+       }
+       vif_priv->ctx = ctx;
+       ctx->vif = vif;
+       err = iwl_setup_interface(priv, ctx);
+       if (!err || reset)
+               goto out;
+       ctx->vif = NULL;
+       priv->iw_mode = NL80211_IFTYPE_STATION;
+  out:
+       mutex_unlock(&priv->mutex);
+       IWL_DEBUG_MAC80211(priv, "leave\n");
+       return err;
+ }
+ static void iwl_teardown_interface(struct iwl_priv *priv,
+                                  struct ieee80211_vif *vif,
+                                  bool mode_change)
+ {
+       struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
+       lockdep_assert_held(&priv->mutex);
+       if (priv->scan_vif == vif) {
+               iwl_scan_cancel_timeout(priv, 200);
+               iwl_force_scan_end(priv);
+       }
+       if (!mode_change) {
+               iwl_set_mode(priv, ctx);
+               if (!ctx->always_active)
+                       ctx->is_active = false;
+       }
+       /*
+        * When removing the IBSS interface, overwrite the
+        * BT traffic load with the stored one from the last
+        * notification, if any. If this is a device that
+        * doesn't implement this, this has no effect since
+        * both values are the same and zero.
+        */
+       if (vif->type == NL80211_IFTYPE_ADHOC)
+               priv->bt_traffic_load = priv->last_bt_traffic_load;
+ }
+ static void iwlagn_mac_remove_interface(struct ieee80211_hw *hw,
+                             struct ieee80211_vif *vif)
+ {
+       struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
+       struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
+       IWL_DEBUG_MAC80211(priv, "enter\n");
+       mutex_lock(&priv->mutex);
+       if (WARN_ON(ctx->vif != vif)) {
+               struct iwl_rxon_context *tmp;
+               IWL_ERR(priv, "ctx->vif = %p, vif = %p\n", ctx->vif, vif);
+               for_each_context(priv, tmp)
+                       IWL_ERR(priv, "\tID = %d:\tctx = %p\tctx->vif = %p\n",
+                               tmp->ctxid, tmp, tmp->vif);
+       }
+       ctx->vif = NULL;
+       iwl_teardown_interface(priv, vif, false);
+       mutex_unlock(&priv->mutex);
+       IWL_DEBUG_MAC80211(priv, "leave\n");
+ }
+ static int iwlagn_mac_change_interface(struct ieee80211_hw *hw,
+                               struct ieee80211_vif *vif,
+                               enum nl80211_iftype newtype, bool newp2p)
+ {
+       struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
+       struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
+       struct iwl_rxon_context *bss_ctx = &priv->contexts[IWL_RXON_CTX_BSS];
+       struct iwl_rxon_context *tmp;
+       enum nl80211_iftype newviftype = newtype;
+       u32 interface_modes;
+       int err;
+       IWL_DEBUG_MAC80211(priv, "enter\n");
+       newtype = ieee80211_iftype_p2p(newtype, newp2p);
+       mutex_lock(&priv->mutex);
+       if (!ctx->vif || !iwl_is_ready_rf(priv)) {
+               /*
+                * Huh? But wait ... this can maybe happen when
+                * we're in the middle of a firmware restart!
+                */
+               err = -EBUSY;
+               goto out;
+       }
+       interface_modes = ctx->interface_modes | ctx->exclusive_interface_modes;
+       if (!(interface_modes & BIT(newtype))) {
+               err = -EBUSY;
+               goto out;
+       }
+       /*
+        * Refuse a change that should be done by moving from the PAN
+        * context to the BSS context instead, if the BSS context is
+        * available and can support the new interface type.
+        */
+       if (ctx->ctxid == IWL_RXON_CTX_PAN && !bss_ctx->vif &&
+           (bss_ctx->interface_modes & BIT(newtype) ||
+            bss_ctx->exclusive_interface_modes & BIT(newtype))) {
+               BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
+               err = -EBUSY;
+               goto out;
+       }
+       if (ctx->exclusive_interface_modes & BIT(newtype)) {
+               for_each_context(priv, tmp) {
+                       if (ctx == tmp)
+                               continue;
+                       if (!tmp->vif)
+                               continue;
+                       /*
+                        * The current mode switch would be exclusive, but
+                        * another context is active ... refuse the switch.
+                        */
+                       err = -EBUSY;
+                       goto out;
+               }
+       }
+       /* success */
+       iwl_teardown_interface(priv, vif, true);
+       vif->type = newviftype;
+       vif->p2p = newp2p;
+       err = iwl_setup_interface(priv, ctx);
+       WARN_ON(err);
+       /*
+        * We've switched internally, but submitting to the
+        * device may have failed for some reason. Mask this
+        * error, because otherwise mac80211 will not switch
+        * (and set the interface type back) and we'll be
+        * out of sync with it.
+        */
+       err = 0;
+  out:
+       mutex_unlock(&priv->mutex);
+       IWL_DEBUG_MAC80211(priv, "leave\n");
+       return err;
+ }
+ static int iwlagn_mac_hw_scan(struct ieee80211_hw *hw,
+                             struct ieee80211_vif *vif,
+                             struct cfg80211_scan_request *req)
+ {
+       struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
+       int ret;
+       IWL_DEBUG_MAC80211(priv, "enter\n");
+       if (req->n_channels == 0)
+               return -EINVAL;
+       mutex_lock(&priv->mutex);
+       /*
+        * If an internal scan is in progress, just set
+        * up the scan_request as per above.
+        */
+       if (priv->scan_type != IWL_SCAN_NORMAL) {
+               IWL_DEBUG_SCAN(priv,
+                              "SCAN request during internal scan - defer\n");
+               priv->scan_request = req;
+               priv->scan_vif = vif;
+               ret = 0;
+       } else {
+               priv->scan_request = req;
+               priv->scan_vif = vif;
+               /*
+                * mac80211 will only ask for one band at a time
+                * so using channels[0] here is ok
+                */
+               ret = iwl_scan_initiate(priv, vif, IWL_SCAN_NORMAL,
+                                       req->channels[0]->band);
+               if (ret) {
+                       priv->scan_request = NULL;
+                       priv->scan_vif = NULL;
+               }
+       }
+       IWL_DEBUG_MAC80211(priv, "leave\n");
+       mutex_unlock(&priv->mutex);
+       return ret;
+ }
+ static void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id)
+ {
+       struct iwl_addsta_cmd cmd = {
+               .mode = STA_CONTROL_MODIFY_MSK,
+               .station_flags_msk = STA_FLG_PWR_SAVE_MSK,
+               .sta.sta_id = sta_id,
+       };
+       iwl_send_add_sta(priv, &cmd, CMD_ASYNC);
+ }
+ static void iwlagn_mac_sta_notify(struct ieee80211_hw *hw,
+                                 struct ieee80211_vif *vif,
+                                 enum sta_notify_cmd cmd,
+                                 struct ieee80211_sta *sta)
+ {
+       struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
+       struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
+       int sta_id;
+       IWL_DEBUG_MAC80211(priv, "enter\n");
+       switch (cmd) {
+       case STA_NOTIFY_SLEEP:
+               WARN_ON(!sta_priv->client);
+               sta_priv->asleep = true;
+               if (atomic_read(&sta_priv->pending_frames) > 0)
+                       ieee80211_sta_block_awake(hw, sta, true);
+               break;
+       case STA_NOTIFY_AWAKE:
+               WARN_ON(!sta_priv->client);
+               if (!sta_priv->asleep)
+                       break;
+               sta_priv->asleep = false;
+               sta_id = iwl_sta_id(sta);
+               if (sta_id != IWL_INVALID_STATION)
+                       iwl_sta_modify_ps_wake(priv, sta_id);
+               break;
+       default:
+               break;
+       }
+       IWL_DEBUG_MAC80211(priv, "leave\n");
+ }
+ struct ieee80211_ops iwlagn_hw_ops = {
+       .tx = iwlagn_mac_tx,
+       .start = iwlagn_mac_start,
+       .stop = iwlagn_mac_stop,
+ #ifdef CONFIG_PM_SLEEP
+       .suspend = iwlagn_mac_suspend,
+       .resume = iwlagn_mac_resume,
+       .set_wakeup = iwlagn_mac_set_wakeup,
+ #endif
+       .add_interface = iwlagn_mac_add_interface,
+       .remove_interface = iwlagn_mac_remove_interface,
+       .change_interface = iwlagn_mac_change_interface,
+       .config = iwlagn_mac_config,
+       .configure_filter = iwlagn_configure_filter,
+       .set_key = iwlagn_mac_set_key,
+       .update_tkip_key = iwlagn_mac_update_tkip_key,
+       .set_rekey_data = iwlagn_mac_set_rekey_data,
+       .conf_tx = iwlagn_mac_conf_tx,
+       .bss_info_changed = iwlagn_bss_info_changed,
+       .ampdu_action = iwlagn_mac_ampdu_action,
+       .hw_scan = iwlagn_mac_hw_scan,
+       .sta_notify = iwlagn_mac_sta_notify,
+       .sta_state = iwlagn_mac_sta_state,
+       .channel_switch = iwlagn_mac_channel_switch,
+       .flush = iwlagn_mac_flush,
+       .tx_last_beacon = iwlagn_mac_tx_last_beacon,
+       .remain_on_channel = iwlagn_mac_remain_on_channel,
+       .cancel_remain_on_channel = iwlagn_mac_cancel_remain_on_channel,
+       .rssi_callback = iwlagn_mac_rssi_callback,
+       CFG80211_TESTMODE_CMD(iwlagn_mac_testmode_cmd)
+       CFG80211_TESTMODE_DUMP(iwlagn_mac_testmode_dump)
+       .set_tim = iwlagn_mac_set_tim,
+ };
+ /* This function both allocates and initializes hw and priv. */
+ struct ieee80211_hw *iwl_alloc_all(void)
+ {
+       struct iwl_priv *priv;
+       struct iwl_op_mode *op_mode;
+       /* mac80211 allocates memory for this device instance, including
+        *   space for this driver's private structure */
+       struct ieee80211_hw *hw;
+       hw = ieee80211_alloc_hw(sizeof(struct iwl_priv) +
+                               sizeof(struct iwl_op_mode), &iwlagn_hw_ops);
+       if (!hw)
+               goto out;
+       op_mode = hw->priv;
+       priv = IWL_OP_MODE_GET_DVM(op_mode);
+       priv->hw = hw;
+ out:
+       return hw;
+ }