1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
6 * Purpose: Implement functions for 802.11i Key management
17 static int vnt_set_keymode(struct ieee80211_hw *hw, u8 *mac_addr,
18 struct ieee80211_key_conf *key, u32 key_type,
19 u32 mode, bool onfly_latch)
21 struct vnt_private *priv = hw->priv;
22 u8 broadcast[6] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
26 u8 key_inx = key->keyidx;
32 bssid = &broadcast[0];
34 if (key_type != VNT_KEY_DEFAULTKEY) {
35 for (i = 0; i < (MAX_KEY_TABLE - 1); i++) {
36 if (!test_bit(i, &priv->key_entry_inuse)) {
37 set_bit(i, &priv->key_entry_inuse);
40 entry = key->hw_key_idx;
47 case VNT_KEY_DEFAULTKEY:
48 /* default key last entry */
49 entry = MAX_KEY_TABLE - 1;
50 key->hw_key_idx = entry;
52 case VNT_KEY_ALLGROUP:
53 key_mode |= VNT_KEY_ALLGROUP;
55 key_mode |= VNT_KEY_ONFLY_ALL;
57 case VNT_KEY_GROUP_ADDRESS:
61 key_mode |= (mode << 4);
62 key_mode |= VNT_KEY_GROUP;
64 case VNT_KEY_PAIRWISE:
73 key_mode |= VNT_KEY_ONFLY;
75 if (mode == KEY_CTL_WEP) {
76 if (key->keylen == WLAN_KEY_LEN_WEP40)
78 if (key->keylen == WLAN_KEY_LEN_WEP104)
82 MACvSetKeyEntry(priv, key_mode, entry, key_inx,
83 bssid, (u32 *)key->key, priv->local_id);
88 int vnt_set_keys(struct ieee80211_hw *hw, struct ieee80211_sta *sta,
89 struct ieee80211_vif *vif, struct ieee80211_key_conf *key)
91 struct ieee80211_bss_conf *conf = &vif->bss_conf;
92 struct vnt_private *priv = hw->priv;
99 mac_addr = &sta->addr[0];
101 switch (key->cipher) {
103 for (u = 0 ; u < MAX_KEY_TABLE; u++)
104 MACvDisableKeyEntry(priv, u);
107 case WLAN_CIPHER_SUITE_WEP40:
108 case WLAN_CIPHER_SUITE_WEP104:
109 for (u = 0; u < MAX_KEY_TABLE; u++)
110 MACvDisableKeyEntry(priv, u);
112 vnt_set_keymode(hw, mac_addr,
113 key, VNT_KEY_DEFAULTKEY, KEY_CTL_WEP, true);
115 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
118 case WLAN_CIPHER_SUITE_TKIP:
119 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
120 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
122 key_dec_mode = KEY_CTL_TKIP;
125 case WLAN_CIPHER_SUITE_CCMP:
126 key_dec_mode = KEY_CTL_CCMP;
128 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
131 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
132 vnt_set_keymode(hw, mac_addr,
133 key, VNT_KEY_PAIRWISE, key_dec_mode, true);
135 vnt_set_keymode(hw, mac_addr,
136 key, VNT_KEY_DEFAULTKEY, key_dec_mode, true);
138 vnt_set_keymode(hw, (u8 *)conf->bssid,
139 key, VNT_KEY_GROUP_ADDRESS, key_dec_mode, true);