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|
/******************************************************************************
*
* Copyright(c) 2003 - 2011 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 "iwl-dev.h"
#include "iwl-core.h"
#include "iwl-sta.h"
#include "iwl-4965.h"
static struct iwl_link_quality_cmd *
iwl4965_sta_alloc_lq(struct iwl_priv *priv, u8 sta_id)
{
int i, r;
struct iwl_link_quality_cmd *link_cmd;
u32 rate_flags = 0;
__le32 rate_n_flags;
link_cmd = kzalloc(sizeof(struct iwl_link_quality_cmd), GFP_KERNEL);
if (!link_cmd) {
IWL_ERR(priv, "Unable to allocate memory for LQ cmd.\n");
return NULL;
}
/* Set up the rate scaling to start at selected rate, fall back
* all the way down to 1M in IEEE order, and then spin on 1M */
if (priv->band == IEEE80211_BAND_5GHZ)
r = IWL_RATE_6M_INDEX;
else
r = IWL_RATE_1M_INDEX;
if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE)
rate_flags |= RATE_MCS_CCK_MSK;
rate_flags |= iwl4965_first_antenna(priv->hw_params.valid_tx_ant) <<
RATE_MCS_ANT_POS;
rate_n_flags = iwl4965_hw_set_rate_n_flags(iwlegacy_rates[r].plcp,
rate_flags);
for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++)
link_cmd->rs_table[i].rate_n_flags = rate_n_flags;
link_cmd->general_params.single_stream_ant_msk =
iwl4965_first_antenna(priv->hw_params.valid_tx_ant);
link_cmd->general_params.dual_stream_ant_msk =
priv->hw_params.valid_tx_ant &
~iwl4965_first_antenna(priv->hw_params.valid_tx_ant);
if (!link_cmd->general_params.dual_stream_ant_msk) {
link_cmd->general_params.dual_stream_ant_msk = ANT_AB;
} else if (iwl4965_num_of_ant(priv->hw_params.valid_tx_ant) == 2) {
link_cmd->general_params.dual_stream_ant_msk =
priv->hw_params.valid_tx_ant;
}
link_cmd->agg_params.agg_dis_start_th = LINK_QUAL_AGG_DISABLE_START_DEF;
link_cmd->agg_params.agg_time_limit =
cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF);
link_cmd->sta_id = sta_id;
return link_cmd;
}
/*
* iwl4965_add_bssid_station - Add the special IBSS BSSID station
*
* Function sleeps.
*/
int
iwl4965_add_bssid_station(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
const u8 *addr, u8 *sta_id_r)
{
int ret;
u8 sta_id;
struct iwl_link_quality_cmd *link_cmd;
unsigned long flags;
if (sta_id_r)
*sta_id_r = IWL_INVALID_STATION;
ret = iwl_legacy_add_station_common(priv, ctx, addr, 0, NULL, &sta_id);
if (ret) {
IWL_ERR(priv, "Unable to add station %pM\n", addr);
return ret;
}
if (sta_id_r)
*sta_id_r = sta_id;
spin_lock_irqsave(&priv->sta_lock, flags);
priv->stations[sta_id].used |= IWL_STA_LOCAL;
spin_unlock_irqrestore(&priv->sta_lock, flags);
/* Set up default rate scaling table in device's station table */
link_cmd = iwl4965_sta_alloc_lq(priv, sta_id);
if (!link_cmd) {
IWL_ERR(priv,
"Unable to initialize rate scaling for station %pM.\n",
addr);
return -ENOMEM;
}
ret = iwl_legacy_send_lq_cmd(priv, ctx, link_cmd, CMD_SYNC, true);
if (ret)
IWL_ERR(priv, "Link quality command failed (%d)\n", ret);
spin_lock_irqsave(&priv->sta_lock, flags);
priv->stations[sta_id].lq = link_cmd;
spin_unlock_irqrestore(&priv->sta_lock, flags);
return 0;
}
static int iwl4965_static_wepkey_cmd(struct iwl_priv *priv,
struct iwl_rxon_context *ctx,
bool send_if_empty)
{
int i, not_empty = 0;
u8 buff[sizeof(struct iwl_wep_cmd) +
sizeof(struct iwl_wep_key) * WEP_KEYS_MAX];
struct iwl_wep_cmd *wep_cmd = (struct iwl_wep_cmd *)buff;
size_t cmd_size = sizeof(struct iwl_wep_cmd);
struct iwl_host_cmd cmd = {
.id = ctx->wep_key_cmd,
.data = wep_cmd,
.flags = CMD_SYNC,
};
might_sleep();
memset(wep_cmd, 0, cmd_size +
(sizeof(struct iwl_wep_key) * WEP_KEYS_MAX));
for (i = 0; i < WEP_KEYS_MAX ; i++) {
wep_cmd->key[i].key_index = i;
if (ctx->wep_keys[i].key_size) {
wep_cmd->key[i].key_offset = i;
not_empty = 1;
} else {
wep_cmd->key[i].key_offset = WEP_INVALID_OFFSET;
}
wep_cmd->key[i].key_size = ctx->wep_keys[i].key_size;
memcpy(&wep_cmd->key[i].key[3], ctx->wep_keys[i].key,
ctx->wep_keys[i].key_size);
}
wep_cmd->global_key_type = WEP_KEY_WEP_TYPE;
wep_cmd->num_keys = WEP_KEYS_MAX;
cmd_size += sizeof(struct iwl_wep_key) * WEP_KEYS_MAX;
cmd.len = cmd_size;
if (not_empty || send_if_empty)
return iwl_legacy_send_cmd(priv, &cmd);
else
return 0;
}
int iwl4965_restore_default_wep_keys(struct iwl_priv *priv,
struct iwl_rxon_context *ctx)
{
lockdep_assert_held(&priv->mutex);
return iwl4965_static_wepkey_cmd(priv, ctx, false);
}
int
|