release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/net/wireless/iwlwifi/iwl-sta.h

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2010 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 #ifndef __iwl_sta_h__
  30 #define __iwl_sta_h__
  31
  32 #include "iwl-dev.h"
  33
  34 #define HW_KEY_DYNAMIC 0
  35 #define HW_KEY_DEFAULT 1
  36
  37 #define IWL_STA_DRIVER_ACTIVE BIT(0) /* driver entry is active */
  38 #define IWL_STA_UCODE_ACTIVE  BIT(1) /* ucode entry is active */
  39 #define IWL_STA_UCODE_INPROGRESS  BIT(2) /* ucode entry is in process of
  40                                             being activated */
  41 #define IWL_STA_LOCAL BIT(3) /* station state not directed by mac80211;
  42                                 (this is for the IBSS BSSID stations) */
  43 #define IWL_STA_BCAST BIT(4) /* this station is the special bcast station */
  44
  45
  46 int iwl_remove_default_wep_key(struct iwl_priv *priv,
  47                                struct ieee80211_key_conf *key);
  48 int iwl_set_default_wep_key(struct iwl_priv *priv,
  49                             struct ieee80211_key_conf *key);
  50 int iwl_restore_default_wep_keys(struct iwl_priv *priv);
  51 int iwl_set_dynamic_key(struct iwl_priv *priv,
  52                         struct ieee80211_key_conf *key, u8 sta_id);
  53 int iwl_remove_dynamic_key(struct iwl_priv *priv,
  54                            struct ieee80211_key_conf *key, u8 sta_id);
  55 void iwl_update_tkip_key(struct iwl_priv *priv,
  56                         struct ieee80211_key_conf *keyconf,
  57                         struct ieee80211_sta *sta, u32 iv32, u16 *phase1key);
  58
  59 void iwl_restore_stations(struct iwl_priv *priv);
  60 void iwl_clear_ucode_stations(struct iwl_priv *priv);
  61 int iwl_alloc_bcast_station(struct iwl_priv *priv, bool init_lq);
  62 void iwl_dealloc_bcast_station(struct iwl_priv *priv);
  63 int iwl_update_bcast_station(struct iwl_priv *priv);
  64 int iwl_get_free_ucode_key_index(struct iwl_priv *priv);
  65 int iwl_send_add_sta(struct iwl_priv *priv,
  66                      struct iwl_addsta_cmd *sta, u8 flags);
  67 int iwl_add_bssid_station(struct iwl_priv *priv, const u8 *addr, bool init_rs,
  68                           u8 *sta_id_r);
  69 int iwl_add_station_common(struct iwl_priv *priv, const u8 *addr,
  70                                   bool is_ap,
  71                                   struct ieee80211_sta_ht_cap *ht_info,
  72                                   u8 *sta_id_r);
  73 int iwl_remove_station(struct iwl_priv *priv, const u8 sta_id,
  74                        const u8 *addr);
  75 int iwl_mac_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
  76                        struct ieee80211_sta *sta);
  77 int iwl_sta_tx_modify_enable_tid(struct iwl_priv *priv, int sta_id, int tid);
  78 int iwl_sta_rx_agg_start(struct iwl_priv *priv, struct ieee80211_sta *sta,
  79                          int tid, u16 ssn);
  80 int iwl_sta_rx_agg_stop(struct iwl_priv *priv, struct ieee80211_sta *sta,
  81                         int tid);
  82 void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id);
  83 void iwl_sta_modify_sleep_tx_count(struct iwl_priv *priv, int sta_id, int cnt);
  84
  85 /**
  86  * iwl_clear_driver_stations - clear knowledge of all stations from driver
  87  * @priv: iwl priv struct
  88  *
  89  * This is called during iwl_down() to make sure that in the case
  90  * we're coming there from a hardware restart mac80211 will be
  91  * able to reconfigure stations -- if we're getting there in the
  92  * normal down flow then the stations will already be cleared.
  93  */
  94 static inline void iwl_clear_driver_stations(struct iwl_priv *priv)
  95 {
  96         unsigned long flags;
  97
  98         spin_lock_irqsave(&priv->sta_lock, flags);
  99         memset(priv->stations, 0, sizeof(priv->stations));
 100         priv->num_stations = 0;
 101
 102         /*
 103          * Remove all key information that is not stored as part of station
 104          * information since mac80211 may not have had a
 105          * chance to remove all the keys. When device is reconfigured by
 106          * mac80211 after an error all keys will be reconfigured.
 107          */
 108         priv->ucode_key_table = 0;
 109         priv->key_mapping_key = 0;
 110         memset(priv->wep_keys, 0, sizeof(priv->wep_keys));
 111
 112         spin_unlock_irqrestore(&priv->sta_lock, flags);
 113 }
 114
 115 static inline int iwl_sta_id(struct ieee80211_sta *sta)
 116 {
 117         if (WARN_ON(!sta))
 118                 return IWL_INVALID_STATION;
 119
 120         return ((struct iwl_station_priv_common *)sta->drv_priv)->sta_id;
 121 }
 122
 123 /**
 124  * iwl_sta_id_or_broadcast - return sta_id or broadcast sta
 125  * @priv: iwl priv
 126  * @sta: mac80211 station
 127  *
 128  * In certain circumstances mac80211 passes a station pointer
 129  * that may be %NULL, for example during TX or key setup. In
 130  * that case, we need to use the broadcast station, so this
 131  * inline wraps that pattern.
 132  */
 133 static inline int iwl_sta_id_or_broadcast(struct iwl_priv *priv,
 134                                           struct ieee80211_sta *sta)
 135 {
 136         int sta_id;
 137
 138         if (!sta)
 139                 return priv->hw_params.bcast_sta_id;
 140
 141         sta_id = iwl_sta_id(sta);
 142
 143         /*
 144          * mac80211 should not be passing a partially
 145          * initialised station!
 146          */
 147         WARN_ON(sta_id == IWL_INVALID_STATION);
 148
 149         return sta_id;
 150 }
 151 #endif /* __iwl_sta_h__ */