iwlwifi: default WEP HW encryption
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>
diff --git a/drivers/net/wireless/iwlwifi/iwl-sta.c b/drivers/net/wireless/iwlwifi/iwl-sta.c
new file mode 100644
index 0000000..a48e228
--- /dev/null
+++ b/drivers/net/wireless/iwlwifi/iwl-sta.c
@@ -0,0 +1,119 @@
+/******************************************************************************
+ *
+ * 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:
+ * James P. Ketrenos <ipw2100-admin@linux.intel.com>
+ * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+ *
+ *****************************************************************************/
+
+#include <net/mac80211.h>
+
+#include "iwl-eeprom.h"
+#include "iwl-4965.h"
+#include "iwl-core.h"
+#include "iwl-sta.h"
+#include "iwl-io.h"
+#include "iwl-helpers.h"
+
+int iwl_send_static_wepkey_cmd(struct iwl_priv *priv, u8 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 = REPLY_WEPKEY,
+ .data = wep_cmd,
+ .meta.flags = CMD_ASYNC,
+ };
+
+ 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 (priv->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 = priv->wep_keys[i].key_size;
+ memcpy(&wep_cmd->key[i].key[3], priv->wep_keys[i].key,
+ priv->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_send_cmd(priv, &cmd);
+ else
+ return 0;
+}
+
+int iwl_remove_default_wep_key(struct iwl_priv *priv,
+ struct ieee80211_key_conf *key)
+{
+ int ret;
+ unsigned long flags;
+
+ spin_lock_irqsave(&priv->sta_lock, flags);
+ priv->default_wep_key--;
+ memset(&priv->wep_keys[key->keyidx], 0, sizeof(priv->wep_keys[0]));
+ ret = iwl_send_static_wepkey_cmd(priv, 1);
+ spin_unlock_irqrestore(&priv->sta_lock, flags);
+
+ return ret;
+}
+
+int iwl_set_default_wep_key(struct iwl_priv *priv,
+ struct ieee80211_key_conf *keyconf)
+{
+ int ret;
+ unsigned long flags;
+
+ keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
+ keyconf->hw_key_idx = keyconf->keyidx;
+ priv->stations[IWL_AP_ID].keyinfo.alg = ALG_WEP;
+
+ spin_lock_irqsave(&priv->sta_lock, flags);
+ priv->default_wep_key++;
+
+ priv->wep_keys[keyconf->keyidx].key_size = keyconf->keylen;
+ memcpy(&priv->wep_keys[keyconf->keyidx].key, &keyconf->key,
+ keyconf->keylen);
+
+ ret = iwl_send_static_wepkey_cmd(priv, 0);
+ spin_unlock_irqrestore(&priv->sta_lock, flags);
+
+ return ret;
+}
+