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
34 int vnt_key_init_table(struct vnt_private *priv)
38 for (i = 0; i < MAX_KEY_TABLE; i++)
39 MACvDisableKeyEntry(priv->PortOffset, i);
44 static int vnt_set_keymode(struct ieee80211_hw *hw, u8 *mac_addr,
45 struct ieee80211_key_conf *key, u32 key_type, u32 mode,
48 struct vnt_private *priv = hw->priv;
49 u8 broadcast[6] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
53 u8 key_inx = key->keyidx;
59 bssid = &broadcast[0];
61 if (key_type != VNT_KEY_DEFAULTKEY) {
62 for (i = 0; i < (MAX_KEY_TABLE - 1); i++) {
63 if (!test_bit(i, &priv->key_entry_inuse)) {
64 set_bit(i, &priv->key_entry_inuse);
67 entry = key->hw_key_idx;
75 case VNT_KEY_DEFAULTKEY:
76 /* default key last entry */
77 entry = MAX_KEY_TABLE - 1;
78 key->hw_key_idx = entry;
79 case VNT_KEY_ALLGROUP:
80 key_mode |= VNT_KEY_ALLGROUP;
82 key_mode |= VNT_KEY_ONFLY_ALL;
83 case VNT_KEY_GROUP_ADDRESS:
86 key_mode |= (mode << 4);
87 key_mode |= VNT_KEY_GROUP;
89 case VNT_KEY_PAIRWISE:
98 key_mode |= VNT_KEY_ONFLY;
100 if (mode == KEY_CTL_WEP) {
101 if (key->keylen == WLAN_KEY_LEN_WEP40)
102 key->key[15] &= 0x7f;
103 if (key->keylen == WLAN_KEY_LEN_WEP104)
104 key->key[15] |= 0x80;
107 MACvSetKeyEntry(priv->PortOffset, key_mode, entry, key_inx,
108 bssid, (u32 *)key->key, priv->byLocalID);
113 int vnt_set_keys(struct ieee80211_hw *hw, struct ieee80211_sta *sta,
114 struct ieee80211_vif *vif, struct ieee80211_key_conf *key)
116 struct ieee80211_bss_conf *conf = &vif->bss_conf;
117 struct vnt_private *priv = hw->priv;
124 mac_addr = &sta->addr[0];
126 switch (key->cipher) {
128 for (u = 0 ; u < MAX_KEY_TABLE; u++)
129 MACvDisableKeyEntry(priv->PortOffset, u);
132 case WLAN_CIPHER_SUITE_WEP40:
133 case WLAN_CIPHER_SUITE_WEP104:
134 for (u = 0; u < MAX_KEY_TABLE; u++)
135 MACvDisableKeyEntry(priv->PortOffset, u);
137 vnt_set_keymode(hw, mac_addr,
138 key, VNT_KEY_DEFAULTKEY, KEY_CTL_WEP, true);
140 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
143 case WLAN_CIPHER_SUITE_TKIP:
144 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
145 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
147 key_dec_mode = KEY_CTL_TKIP;
150 case WLAN_CIPHER_SUITE_CCMP:
151 key_dec_mode = KEY_CTL_CCMP;
153 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
156 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
157 vnt_set_keymode(hw, mac_addr,
158 key, VNT_KEY_PAIRWISE, key_dec_mode, true);
160 vnt_set_keymode(hw, mac_addr,
161 key, VNT_KEY_DEFAULTKEY, key_dec_mode, true);
163 vnt_set_keymode(hw, (u8 *)conf->bssid,
164 key, VNT_KEY_GROUP_ADDRESS, key_dec_mode, true);