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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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88c9cc0092
This patch merges an assignment with an immediately following return of the assigned variable.The following Coccinelle semantic patch was used to make this transformation: @@ expression ret; identifier f; @@ -ret = +return f(...); -return ret; A variable that became unused due to this transformation was also removed. Signed-off-by: Mahati Chamarthy <mahati.chamarthy@gmail.com> Acked-by: Julia Lawall <julia.lawall@lip6.fr> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
179 lines
4.2 KiB
C
179 lines
4.2 KiB
C
/*
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* Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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*
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* File: key.c
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*
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* Purpose: Implement functions for 802.11i Key management
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*
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* Author: Jerry Chen
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*
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* Date: May 29, 2003
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*
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* Functions:
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*
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* Revision History:
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*
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*/
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#include "mac.h"
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#include "key.h"
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#include "usbpipe.h"
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int vnt_key_init_table(struct vnt_private *priv)
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{
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u8 i;
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u8 data[MAX_KEY_TABLE];
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for (i = 0; i < MAX_KEY_TABLE; i++)
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data[i] = i;
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return vnt_control_out(priv, MESSAGE_TYPE_CLRKEYENTRY,
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0, 0, ARRAY_SIZE(data), data);
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}
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static int vnt_set_keymode(struct ieee80211_hw *hw, u8 *mac_addr,
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struct ieee80211_key_conf *key, u32 key_type, u32 mode,
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bool onfly_latch)
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{
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struct vnt_private *priv = hw->priv;
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u8 broadcast[6] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
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u16 key_mode = 0;
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u32 entry = 0;
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u8 *bssid;
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u8 key_inx = key->keyidx;
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u8 i;
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if (mac_addr)
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bssid = mac_addr;
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else
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bssid = &broadcast[0];
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if (key_type != VNT_KEY_DEFAULTKEY) {
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for (i = 0; i < (MAX_KEY_TABLE - 1); i++) {
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if (!test_bit(i, &priv->key_entry_inuse)) {
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set_bit(i, &priv->key_entry_inuse);
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key->hw_key_idx = i;
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entry = key->hw_key_idx;
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break;
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}
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}
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}
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switch (key_type) {
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/* fallthrough */
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case VNT_KEY_DEFAULTKEY:
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/* default key last entry */
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entry = MAX_KEY_TABLE - 1;
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key->hw_key_idx = entry;
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case VNT_KEY_ALLGROUP:
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key_mode |= VNT_KEY_ALLGROUP;
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if (onfly_latch)
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key_mode |= VNT_KEY_ONFLY_ALL;
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case VNT_KEY_GROUP_ADDRESS:
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key_mode |= mode;
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case VNT_KEY_GROUP:
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key_mode |= (mode << 4);
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key_mode |= VNT_KEY_GROUP;
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break;
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case VNT_KEY_PAIRWISE:
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key_mode |= mode;
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key_inx = 4;
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/* Don't save entry for pairwise key for station mode */
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if (priv->op_mode == NL80211_IFTYPE_STATION)
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clear_bit(entry, &priv->key_entry_inuse);
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break;
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default:
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return -EINVAL;
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}
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if (onfly_latch)
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key_mode |= VNT_KEY_ONFLY;
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if (mode == KEY_CTL_WEP) {
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if (key->keylen == WLAN_KEY_LEN_WEP40)
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key->key[15] &= 0x7f;
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if (key->keylen == WLAN_KEY_LEN_WEP104)
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key->key[15] |= 0x80;
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}
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vnt_mac_set_keyentry(priv, key_mode, entry, key_inx, bssid, key->key);
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return 0;
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}
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int vnt_set_keys(struct ieee80211_hw *hw, struct ieee80211_sta *sta,
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struct ieee80211_vif *vif, struct ieee80211_key_conf *key)
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{
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struct ieee80211_bss_conf *conf = &vif->bss_conf;
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struct vnt_private *priv = hw->priv;
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u8 *mac_addr = NULL;
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u8 key_dec_mode = 0;
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int ret = 0, u;
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if (sta)
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mac_addr = &sta->addr[0];
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switch (key->cipher) {
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case 0:
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for (u = 0 ; u < MAX_KEY_TABLE; u++)
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vnt_mac_disable_keyentry(priv, u);
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return ret;
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case WLAN_CIPHER_SUITE_WEP40:
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case WLAN_CIPHER_SUITE_WEP104:
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for (u = 0; u < MAX_KEY_TABLE; u++)
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vnt_mac_disable_keyentry(priv, u);
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vnt_set_keymode(hw, mac_addr, key, VNT_KEY_DEFAULTKEY,
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KEY_CTL_WEP, true);
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key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
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return ret;
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case WLAN_CIPHER_SUITE_TKIP:
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key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
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key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
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key_dec_mode = KEY_CTL_TKIP;
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break;
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case WLAN_CIPHER_SUITE_CCMP:
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if (priv->local_id <= MAC_REVISION_A1)
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return -EINVAL;
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key_dec_mode = KEY_CTL_CCMP;
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key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
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}
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if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
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vnt_set_keymode(hw, mac_addr, key, VNT_KEY_PAIRWISE,
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key_dec_mode, true);
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} else {
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vnt_set_keymode(hw, mac_addr, key, VNT_KEY_DEFAULTKEY,
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key_dec_mode, true);
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vnt_set_keymode(hw, (u8 *)conf->bssid, key,
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VNT_KEY_GROUP_ADDRESS, key_dec_mode, true);
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}
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return 0;
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}
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