1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
8 * Purpose: Implement functions for 802.11i Key management
24 int vnt_key_init_table(struct vnt_private *priv)
27 u8 data[MAX_KEY_TABLE];
29 for (i = 0; i < MAX_KEY_TABLE; i++)
32 return vnt_control_out(priv, MESSAGE_TYPE_CLRKEYENTRY,
33 0, 0, ARRAY_SIZE(data), data);
36 static int vnt_set_keymode(struct ieee80211_hw *hw, u8 *mac_addr,
37 struct ieee80211_key_conf *key, u32 key_type,
38 u32 mode, bool onfly_latch)
40 struct vnt_private *priv = hw->priv;
41 u8 broadcast[6] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
45 u8 key_inx = key->keyidx;
51 bssid = &broadcast[0];
53 if (key_type != VNT_KEY_DEFAULTKEY) {
54 for (i = 0; i < (MAX_KEY_TABLE - 1); i++) {
55 if (!test_bit(i, &priv->key_entry_inuse)) {
56 set_bit(i, &priv->key_entry_inuse);
59 entry = key->hw_key_idx;
66 case VNT_KEY_DEFAULTKEY:
67 /* default key last entry */
68 entry = MAX_KEY_TABLE - 1;
69 key->hw_key_idx = entry;
71 case VNT_KEY_ALLGROUP:
72 key_mode |= VNT_KEY_ALLGROUP;
74 key_mode |= VNT_KEY_ONFLY_ALL;
76 case VNT_KEY_GROUP_ADDRESS:
80 key_mode |= (mode << 4);
81 key_mode |= VNT_KEY_GROUP;
83 case VNT_KEY_PAIRWISE:
86 /* Don't save entry for pairwise key for station mode */
87 if (priv->op_mode == NL80211_IFTYPE_STATION)
88 clear_bit(entry, &priv->key_entry_inuse);
95 key_mode |= VNT_KEY_ONFLY;
97 if (mode == KEY_CTL_WEP) {
98 if (key->keylen == WLAN_KEY_LEN_WEP40)
100 if (key->keylen == WLAN_KEY_LEN_WEP104)
101 key->key[15] |= 0x80;
104 vnt_mac_set_keyentry(priv, key_mode, entry, key_inx, bssid, key->key);
109 int vnt_set_keys(struct ieee80211_hw *hw, struct ieee80211_sta *sta,
110 struct ieee80211_vif *vif, struct ieee80211_key_conf *key)
112 struct ieee80211_bss_conf *conf = &vif->bss_conf;
113 struct vnt_private *priv = hw->priv;
119 mac_addr = &sta->addr[0];
121 switch (key->cipher) {
123 for (u = 0 ; u < MAX_KEY_TABLE; u++)
124 vnt_mac_disable_keyentry(priv, u);
127 case WLAN_CIPHER_SUITE_WEP40:
128 case WLAN_CIPHER_SUITE_WEP104:
129 for (u = 0; u < MAX_KEY_TABLE; u++)
130 vnt_mac_disable_keyentry(priv, u);
132 vnt_set_keymode(hw, mac_addr, key, VNT_KEY_DEFAULTKEY,
135 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
138 case WLAN_CIPHER_SUITE_TKIP:
139 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
140 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
142 key_dec_mode = KEY_CTL_TKIP;
145 case WLAN_CIPHER_SUITE_CCMP:
146 if (priv->local_id <= MAC_REVISION_A1)
149 key_dec_mode = KEY_CTL_CCMP;
151 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
154 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
155 vnt_set_keymode(hw, mac_addr, key, VNT_KEY_PAIRWISE,
158 vnt_set_keymode(hw, mac_addr, key, VNT_KEY_DEFAULTKEY,
161 vnt_set_keymode(hw, (u8 *)conf->bssid, key,
162 VNT_KEY_GROUP_ADDRESS, key_dec_mode, true);