139 lines
4.8 KiB
C
139 lines
4.8 KiB
C
/******************************************************************************
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*
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* Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved.
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*
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* Portions of this file are derived from the ipw3945 project, as well
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* as portions of the ieee80211 subsystem header files.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
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*
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* The full GNU General Public License is included in this distribution in the
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* file called LICENSE.
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*
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* Contact Information:
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* Intel Linux Wireless <ilw@linux.intel.com>
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*
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*****************************************************************************/
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#ifndef __iwl_sta_h__
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#define __iwl_sta_h__
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#include "iwl-dev.h"
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#define IWL_STA_DRIVER_ACTIVE BIT(0) /* driver entry is active */
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#define IWL_STA_UCODE_ACTIVE BIT(1) /* ucode entry is active */
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#define IWL_STA_UCODE_INPROGRESS BIT(2) /* ucode entry is in process of
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being activated */
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#define IWL_STA_LOCAL BIT(3) /* station state not directed by mac80211;
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(this is for the IBSS BSSID stations) */
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#define IWL_STA_BCAST BIT(4) /* this station is the special bcast station */
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void iwl_restore_stations(struct iwl_priv *priv, struct iwl_rxon_context *ctx);
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void iwl_clear_ucode_stations(struct iwl_priv *priv,
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struct iwl_rxon_context *ctx);
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void iwl_dealloc_bcast_stations(struct iwl_priv *priv);
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int iwl_get_free_ucode_key_offset(struct iwl_priv *priv);
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int iwl_send_add_sta(struct iwl_priv *priv,
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struct iwl_addsta_cmd *sta, u8 flags);
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int iwl_add_station_common(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
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const u8 *addr, bool is_ap,
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struct ieee80211_sta *sta, u8 *sta_id_r);
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int iwl_remove_station(struct iwl_priv *priv, const u8 sta_id,
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const u8 *addr);
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int iwl_mac_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
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struct ieee80211_sta *sta);
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u8 iwl_prep_station(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
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const u8 *addr, bool is_ap, struct ieee80211_sta *sta);
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int iwl_send_lq_cmd(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
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struct iwl_link_quality_cmd *lq, u8 flags, bool init);
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void iwl_reprogram_ap_sta(struct iwl_priv *priv, struct iwl_rxon_context *ctx);
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/**
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* iwl_clear_driver_stations - clear knowledge of all stations from driver
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* @priv: iwl priv struct
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*
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* This is called during iwl_down() to make sure that in the case
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* we're coming there from a hardware restart mac80211 will be
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* able to reconfigure stations -- if we're getting there in the
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* normal down flow then the stations will already be cleared.
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*/
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static inline void iwl_clear_driver_stations(struct iwl_priv *priv)
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{
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unsigned long flags;
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struct iwl_rxon_context *ctx;
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spin_lock_irqsave(&priv->shrd->sta_lock, flags);
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memset(priv->stations, 0, sizeof(priv->stations));
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priv->num_stations = 0;
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priv->ucode_key_table = 0;
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for_each_context(priv, ctx) {
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/*
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* Remove all key information that is not stored as part
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* of station information since mac80211 may not have had
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* a chance to remove all the keys. When device is
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* reconfigured by mac80211 after an error all keys will
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* be reconfigured.
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*/
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memset(ctx->wep_keys, 0, sizeof(ctx->wep_keys));
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ctx->key_mapping_keys = 0;
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}
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spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
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}
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static inline int iwl_sta_id(struct ieee80211_sta *sta)
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{
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if (WARN_ON(!sta))
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return IWL_INVALID_STATION;
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return ((struct iwl_station_priv_common *)sta->drv_priv)->sta_id;
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}
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/**
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* iwl_sta_id_or_broadcast - return sta_id or broadcast sta
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* @priv: iwl priv
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* @context: the current context
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* @sta: mac80211 station
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*
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* In certain circumstances mac80211 passes a station pointer
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* that may be %NULL, for example during TX or key setup. In
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* that case, we need to use the broadcast station, so this
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* inline wraps that pattern.
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*/
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static inline int iwl_sta_id_or_broadcast(struct iwl_priv *priv,
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struct iwl_rxon_context *context,
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struct ieee80211_sta *sta)
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{
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int sta_id;
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if (!sta)
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return context->bcast_sta_id;
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sta_id = iwl_sta_id(sta);
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/*
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* mac80211 should not be passing a partially
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* initialised station!
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*/
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WARN_ON(sta_id == IWL_INVALID_STATION);
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return sta_id;
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}
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#endif /* __iwl_sta_h__ */
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