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e4c064728c
When there is a firmware error or the firmware is reloaded for some other reason we currently clear all station information, including keys associated with them. A problem is that we do not clear some other information regarding keys that are not stored in the station structs. The consequence of this is that when the device is reconfigured after the firmware reload we can, among other things, run out of key indices. This fixes: https://bugzilla.kernel.org/show_bug.cgi?id=16232 http://bugzilla.intellinuxwireless.org/show_bug.cgi?id=2221 Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Reviewed-by: Johannes Berg <johannes.berg@intel.com>
122 lines
4.7 KiB
C
122 lines
4.7 KiB
C
/******************************************************************************
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*
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* Copyright(c) 2003 - 2010 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 HW_KEY_DYNAMIC 0
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#define HW_KEY_DEFAULT 1
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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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int iwl_remove_default_wep_key(struct iwl_priv *priv,
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struct ieee80211_key_conf *key);
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int iwl_set_default_wep_key(struct iwl_priv *priv,
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struct ieee80211_key_conf *key);
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int iwl_restore_default_wep_keys(struct iwl_priv *priv);
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int iwl_set_dynamic_key(struct iwl_priv *priv,
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struct ieee80211_key_conf *key, u8 sta_id);
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int iwl_remove_dynamic_key(struct iwl_priv *priv,
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struct ieee80211_key_conf *key, u8 sta_id);
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void iwl_update_tkip_key(struct iwl_priv *priv,
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struct ieee80211_key_conf *keyconf,
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struct ieee80211_sta *sta, u32 iv32, u16 *phase1key);
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void iwl_restore_stations(struct iwl_priv *priv);
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void iwl_clear_ucode_stations(struct iwl_priv *priv);
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int iwl_alloc_bcast_station(struct iwl_priv *priv, bool init_lq);
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void iwl_dealloc_bcast_station(struct iwl_priv *priv);
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int iwl_get_free_ucode_key_index(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_bssid_station(struct iwl_priv *priv, const u8 *addr, bool init_rs,
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u8 *sta_id_r);
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int iwl_add_station_common(struct iwl_priv *priv, const u8 *addr,
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bool is_ap,
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struct ieee80211_sta_ht_cap *ht_info,
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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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void iwl_sta_tx_modify_enable_tid(struct iwl_priv *priv, int sta_id, int tid);
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int iwl_sta_rx_agg_start(struct iwl_priv *priv, struct ieee80211_sta *sta,
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int tid, u16 ssn);
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int iwl_sta_rx_agg_stop(struct iwl_priv *priv, struct ieee80211_sta *sta,
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int tid);
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void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id);
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void iwl_sta_modify_sleep_tx_count(struct iwl_priv *priv, int sta_id, int cnt);
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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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spin_lock_irqsave(&priv->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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/*
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* Remove all key information that is not stored as part of station
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* information since mac80211 may not have had a
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* chance to remove all the keys. When device is reconfigured by
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* mac80211 after an error all keys will be reconfigured.
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*/
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priv->ucode_key_table = 0;
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priv->key_mapping_key = 0;
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memset(priv->wep_keys, 0, sizeof(priv->wep_keys));
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spin_unlock_irqrestore(&priv->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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#endif /* __iwl_sta_h__ */
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