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.
18 * Purpose: Implement functions for 802.11i Key management
34 int vnt_key_init_table(struct vnt_private *priv)
37 u8 data[MAX_KEY_TABLE];
39 for (i = 0; i < MAX_KEY_TABLE; i++)
42 return vnt_control_out(priv, MESSAGE_TYPE_CLRKEYENTRY,
43 0, 0, ARRAY_SIZE(data), data);
46 static int vnt_set_keymode(struct ieee80211_hw *hw, u8 *mac_addr,
47 struct ieee80211_key_conf *key, u32 key_type,
48 u32 mode, bool onfly_latch)
50 struct vnt_private *priv = hw->priv;
51 u8 broadcast[6] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
55 u8 key_inx = key->keyidx;
61 bssid = &broadcast[0];
63 if (key_type != VNT_KEY_DEFAULTKEY) {
64 for (i = 0; i < (MAX_KEY_TABLE - 1); i++) {
65 if (!test_bit(i, &priv->key_entry_inuse)) {
66 set_bit(i, &priv->key_entry_inuse);
69 entry = key->hw_key_idx;
77 case VNT_KEY_DEFAULTKEY:
78 /* default key last entry */
79 entry = MAX_KEY_TABLE - 1;
80 key->hw_key_idx = entry;
81 case VNT_KEY_ALLGROUP:
82 key_mode |= VNT_KEY_ALLGROUP;
84 key_mode |= VNT_KEY_ONFLY_ALL;
85 case VNT_KEY_GROUP_ADDRESS:
88 key_mode |= (mode << 4);
89 key_mode |= VNT_KEY_GROUP;
91 case VNT_KEY_PAIRWISE:
100 key_mode |= VNT_KEY_ONFLY;
102 if (mode == KEY_CTL_WEP) {
103 if (key->keylen == WLAN_KEY_LEN_WEP40)
104 key->key[15] &= 0x7f;
105 if (key->keylen == WLAN_KEY_LEN_WEP104)
106 key->key[15] |= 0x80;
109 vnt_mac_set_keyentry(priv, key_mode, entry, key_inx, bssid, key->key);
114 int vnt_set_keys(struct ieee80211_hw *hw, struct ieee80211_sta *sta,
115 struct ieee80211_vif *vif, struct ieee80211_key_conf *key)
117 struct vnt_private *priv = hw->priv;
123 mac_addr = &sta->addr[0];
125 switch (key->cipher) {
127 for (u = 0 ; u < MAX_KEY_TABLE; u++)
128 vnt_mac_disable_keyentry(priv, u);
131 case WLAN_CIPHER_SUITE_WEP40:
132 case WLAN_CIPHER_SUITE_WEP104:
133 for (u = 0; u < MAX_KEY_TABLE; u++)
134 vnt_mac_disable_keyentry(priv, u);
136 vnt_set_keymode(hw, mac_addr, key, VNT_KEY_DEFAULTKEY,
139 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
142 case WLAN_CIPHER_SUITE_TKIP:
143 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
144 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
146 key_dec_mode = KEY_CTL_TKIP;
149 case WLAN_CIPHER_SUITE_CCMP:
150 if (priv->local_id <= MAC_REVISION_A1)
153 key_dec_mode = KEY_CTL_CCMP;
155 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
158 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
159 vnt_set_keymode(hw, mac_addr, key, VNT_KEY_PAIRWISE,
162 vnt_set_keymode(hw, mac_addr, key, VNT_KEY_GROUP_ADDRESS,