2 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
22 * Purpose: Implement functions for 802.11i Key management
38 int vnt_key_init_table(struct vnt_private *priv)
41 u8 data[MAX_KEY_TABLE];
43 for (i = 0; i < MAX_KEY_TABLE; i++)
46 return vnt_control_out(priv, MESSAGE_TYPE_CLRKEYENTRY,
47 0, 0, ARRAY_SIZE(data), data);
50 static int vnt_set_keymode(struct ieee80211_hw *hw, u8 *mac_addr,
51 struct ieee80211_key_conf *key, u32 key_type, u32 mode,
54 struct vnt_private *priv = hw->priv;
55 u8 broadcast[6] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
59 u8 key_inx = key->keyidx;
65 bssid = &broadcast[0];
67 if (key_type != VNT_KEY_DEFAULTKEY) {
68 for (i = 0; i < (MAX_KEY_TABLE - 1); i++) {
69 if (!test_bit(i, &priv->key_entry_inuse)) {
70 set_bit(i, &priv->key_entry_inuse);
73 entry = key->hw_key_idx;
81 case VNT_KEY_DEFAULTKEY:
82 /* default key last entry */
83 entry = MAX_KEY_TABLE - 1;
84 key->hw_key_idx = entry;
85 case VNT_KEY_ALLGROUP:
86 key_mode |= VNT_KEY_ALLGROUP;
88 key_mode |= VNT_KEY_ONFLY_ALL;
89 case VNT_KEY_GROUP_ADDRESS:
92 key_mode |= (mode << 4);
93 key_mode |= VNT_KEY_GROUP;
95 case VNT_KEY_PAIRWISE:
98 /* Don't save entry for pairwise key for station mode */
99 if (priv->op_mode == NL80211_IFTYPE_STATION)
100 clear_bit(entry, &priv->key_entry_inuse);
107 key_mode |= VNT_KEY_ONFLY;
109 if (mode == KEY_CTL_WEP) {
110 if (key->keylen == WLAN_KEY_LEN_WEP40)
111 key->key[15] &= 0x7f;
112 if (key->keylen == WLAN_KEY_LEN_WEP104)
113 key->key[15] |= 0x80;
116 vnt_mac_set_keyentry(priv, key_mode, entry, key_inx, bssid, key->key);
121 int vnt_set_keys(struct ieee80211_hw *hw, struct ieee80211_sta *sta,
122 struct ieee80211_vif *vif, struct ieee80211_key_conf *key)
124 struct ieee80211_bss_conf *conf = &vif->bss_conf;
125 struct vnt_private *priv = hw->priv;
131 mac_addr = &sta->addr[0];
133 switch (key->cipher) {
135 for (u = 0 ; u < MAX_KEY_TABLE; u++)
136 vnt_mac_disable_keyentry(priv, u);
139 case WLAN_CIPHER_SUITE_WEP40:
140 case WLAN_CIPHER_SUITE_WEP104:
141 for (u = 0; u < MAX_KEY_TABLE; u++)
142 vnt_mac_disable_keyentry(priv, u);
144 vnt_set_keymode(hw, mac_addr, key, VNT_KEY_DEFAULTKEY,
147 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
150 case WLAN_CIPHER_SUITE_TKIP:
151 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
152 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
154 key_dec_mode = KEY_CTL_TKIP;
157 case WLAN_CIPHER_SUITE_CCMP:
158 if (priv->local_id <= MAC_REVISION_A1)
161 key_dec_mode = KEY_CTL_CCMP;
163 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
167 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
168 vnt_set_keymode(hw, mac_addr, key, VNT_KEY_PAIRWISE,
171 vnt_set_keymode(hw, mac_addr, key, VNT_KEY_DEFAULTKEY,
174 vnt_set_keymode(hw, (u8 *)conf->bssid, key,
175 VNT_KEY_GROUP_ADDRESS, key_dec_mode, true);