6974e36356
This patch adds HW encryption support in default WEP mode. When no key mapping key/pairwise key is used. The key is broadcast key is used as default/global/static key. This code assumes that group cast key is added after pairwise key. Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
120 lines
3.4 KiB
C
120 lines
3.4 KiB
C
/******************************************************************************
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*
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* Copyright(c) 2003 - 2008 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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* James P. Ketrenos <ipw2100-admin@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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#include <net/mac80211.h>
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#include "iwl-eeprom.h"
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#include "iwl-4965.h"
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#include "iwl-core.h"
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#include "iwl-sta.h"
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#include "iwl-io.h"
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#include "iwl-helpers.h"
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int iwl_send_static_wepkey_cmd(struct iwl_priv *priv, u8 send_if_empty)
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{
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int i, not_empty = 0;
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u8 buff[sizeof(struct iwl_wep_cmd) +
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sizeof(struct iwl_wep_key) * WEP_KEYS_MAX];
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struct iwl_wep_cmd *wep_cmd = (struct iwl_wep_cmd *)buff;
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size_t cmd_size = sizeof(struct iwl_wep_cmd);
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struct iwl_host_cmd cmd = {
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.id = REPLY_WEPKEY,
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.data = wep_cmd,
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.meta.flags = CMD_ASYNC,
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};
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memset(wep_cmd, 0, cmd_size +
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(sizeof(struct iwl_wep_key) * WEP_KEYS_MAX));
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for (i = 0; i < WEP_KEYS_MAX ; i++) {
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wep_cmd->key[i].key_index = i;
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if (priv->wep_keys[i].key_size) {
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wep_cmd->key[i].key_offset = i;
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not_empty = 1;
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} else {
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wep_cmd->key[i].key_offset = WEP_INVALID_OFFSET;
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}
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wep_cmd->key[i].key_size = priv->wep_keys[i].key_size;
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memcpy(&wep_cmd->key[i].key[3], priv->wep_keys[i].key,
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priv->wep_keys[i].key_size);
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}
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wep_cmd->global_key_type = WEP_KEY_WEP_TYPE;
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wep_cmd->num_keys = WEP_KEYS_MAX;
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cmd_size += sizeof(struct iwl_wep_key) * WEP_KEYS_MAX;
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cmd.len = cmd_size;
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if (not_empty || send_if_empty)
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return iwl_send_cmd(priv, &cmd);
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else
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return 0;
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}
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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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{
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int ret;
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unsigned long flags;
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spin_lock_irqsave(&priv->sta_lock, flags);
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priv->default_wep_key--;
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memset(&priv->wep_keys[key->keyidx], 0, sizeof(priv->wep_keys[0]));
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ret = iwl_send_static_wepkey_cmd(priv, 1);
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spin_unlock_irqrestore(&priv->sta_lock, flags);
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return ret;
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}
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int iwl_set_default_wep_key(struct iwl_priv *priv,
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struct ieee80211_key_conf *keyconf)
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{
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int ret;
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unsigned long flags;
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keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
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keyconf->hw_key_idx = keyconf->keyidx;
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priv->stations[IWL_AP_ID].keyinfo.alg = ALG_WEP;
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spin_lock_irqsave(&priv->sta_lock, flags);
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priv->default_wep_key++;
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priv->wep_keys[keyconf->keyidx].key_size = keyconf->keylen;
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memcpy(&priv->wep_keys[keyconf->keyidx].key, &keyconf->key,
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keyconf->keylen);
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ret = iwl_send_static_wepkey_cmd(priv, 0);
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spin_unlock_irqrestore(&priv->sta_lock, flags);
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return ret;
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}
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