/******************************************************************************
*
* Copyright(c) 2003 - 2008 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 <net/mac80211.h>
#include <linux/etherdevice.h>
#include "iwl-dev.h"
#include "iwl-core.h"
#include "iwl-sta.h"
#include "iwl-helpers.h"
#define IWL_STA_DRIVER_ACTIVE BIT(0) /* driver entry is active */
#define IWL_STA_UCODE_ACTIVE BIT(1) /* ucode entry is active */
u8 iwl_find_station(struct iwl_priv *priv, const u8 *addr)
{
int i;
int start = 0;
int ret = IWL_INVALID_STATION;
unsigned long flags;
if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) ||
(priv->iw_mode == NL80211_IFTYPE_AP))
start = IWL_STA_ID;
if (is_broadcast_ether_addr(addr))
return priv->hw_params.bcast_sta_id;
spin_lock_irqsave(&priv->sta_lock, flags);
for (i = start; i < priv->hw_params.max_stations; i++)
if (priv->stations[i].used &&
(!compare_ether_addr(priv->stations[i].sta.sta.addr,
addr))) {
ret = i;
goto out;
}
IWL_DEBUG_ASSOC_LIMIT("can not find STA %pM total %d\n",
addr, priv->num_stations);
out:
spin_unlock_irqrestore(&priv->sta_lock, flags);
return ret;
}
EXPORT_SYMBOL(iwl_find_station);
int iwl_get_ra_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
{
if (priv->iw_mode == NL80211_IFTYPE_STATION) {
return IWL_AP_ID;
} else {
u8 *da = ieee80211_get_DA(hdr);
return iwl_find_station(priv, da);
}
}
EXPORT_SYMBOL(iwl_get_ra_sta_id);
static void iwl_sta_ucode_activate(struct iwl_priv *priv, u8 sta_id)
{
unsigned long flags;
spin_lock_irqsave(&priv->sta_lock, flags);
if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE))
IWL_ERROR("ACTIVATE a non DRIVER active station %d\n", sta_id);
priv->stations[sta_id].used |= IWL_STA_UCODE_ACTIVE;
IWL_DEBUG_ASSOC("Added STA to Ucode: %pM\n",
priv->stations[sta_id].sta.sta.addr);
spin_unlock_irqrestore(&priv->sta_lock, flags);
}
static int iwl_add_sta_callback(struct iwl_priv *priv,
struct iwl_cmd *cmd, struct sk_buff *skb)
{
struct iwl_rx_packet *res = NULL;
struct iwl_addsta_cmd *addsta =
(struct iwl_addsta_cmd *)cmd->cmd.payload;
u8 sta_id = addsta->sta.sta_id;
if (!skb) {
IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");