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
20 static int vnt_set_keymode(struct ieee80211_hw *hw, u8 *mac_addr,
21 struct ieee80211_key_conf *key, u32 key_type,
22 u32 mode, bool onfly_latch)
24 struct vnt_private *priv = hw->priv;
25 u8 broadcast[6] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
29 u8 key_inx = key->keyidx;
35 bssid = &broadcast[0];
37 if (key_type != VNT_KEY_DEFAULTKEY) {
38 for (i = 0; i < (MAX_KEY_TABLE - 1); i++) {
39 if (!test_bit(i, &priv->key_entry_inuse)) {
40 set_bit(i, &priv->key_entry_inuse);
43 entry = key->hw_key_idx;
50 case VNT_KEY_DEFAULTKEY:
51 /* default key last entry */
52 entry = MAX_KEY_TABLE - 1;
53 key->hw_key_idx = entry;
55 case VNT_KEY_ALLGROUP:
56 key_mode |= VNT_KEY_ALLGROUP;
58 key_mode |= VNT_KEY_ONFLY_ALL;
60 case VNT_KEY_GROUP_ADDRESS:
64 key_mode |= (mode << 4);
65 key_mode |= VNT_KEY_GROUP;
67 case VNT_KEY_PAIRWISE:
76 key_mode |= VNT_KEY_ONFLY;
78 if (mode == KEY_CTL_WEP) {
79 if (key->keylen == WLAN_KEY_LEN_WEP40)
81 if (key->keylen == WLAN_KEY_LEN_WEP104)
85 MACvSetKeyEntry(priv, key_mode, entry, key_inx,
86 bssid, (u32 *)key->key, priv->byLocalID);
91 int vnt_set_keys(struct ieee80211_hw *hw, struct ieee80211_sta *sta,
92 struct ieee80211_vif *vif, struct ieee80211_key_conf *key)
94 struct ieee80211_bss_conf *conf = &vif->bss_conf;
95 struct vnt_private *priv = hw->priv;
102 mac_addr = &sta->addr[0];
104 switch (key->cipher) {
106 for (u = 0 ; u < MAX_KEY_TABLE; u++)
107 MACvDisableKeyEntry(priv, u);
110 case WLAN_CIPHER_SUITE_WEP40:
111 case WLAN_CIPHER_SUITE_WEP104:
112 for (u = 0; u < MAX_KEY_TABLE; u++)
113 MACvDisableKeyEntry(priv, u);
115 vnt_set_keymode(hw, mac_addr,
116 key, VNT_KEY_DEFAULTKEY, KEY_CTL_WEP, true);
118 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
121 case WLAN_CIPHER_SUITE_TKIP:
122 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
123 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
125 key_dec_mode = KEY_CTL_TKIP;
128 case WLAN_CIPHER_SUITE_CCMP:
129 key_dec_mode = KEY_CTL_CCMP;
131 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
134 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
135 vnt_set_keymode(hw, mac_addr,
136 key, VNT_KEY_PAIRWISE, key_dec_mode, true);
138 vnt_set_keymode(hw, mac_addr,
139 key, VNT_KEY_DEFAULTKEY, key_dec_mode, true);
141 vnt_set_keymode(hw, (u8 *)conf->bssid,
142 key, VNT_KEY_GROUP_ADDRESS, key_dec_mode, true);