diff options
Diffstat (limited to 'drivers/staging/vt6655/key.c')
-rw-r--r-- | drivers/staging/vt6655/key.c | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/drivers/staging/vt6655/key.c b/drivers/staging/vt6655/key.c new file mode 100644 index 0000000000..1469015eb5 --- /dev/null +++ b/drivers/staging/vt6655/key.c @@ -0,0 +1,143 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc. + * All rights reserved. + * + * Purpose: Implement functions for 802.11i Key management + * + * Author: Jerry Chen + * + * Date: May 29, 2003 + * + */ + +#include "key.h" +#include "mac.h" + +static int vnt_set_keymode(struct ieee80211_hw *hw, u8 *mac_addr, + struct ieee80211_key_conf *key, u32 key_type, + u32 mode, bool onfly_latch) +{ + struct vnt_private *priv = hw->priv; + u8 broadcast[6] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; + u16 key_mode = 0; + u32 entry = 0; + u8 *bssid; + u8 key_inx = key->keyidx; + u8 i; + + if (mac_addr) + bssid = mac_addr; + else + bssid = &broadcast[0]; + + if (key_type != VNT_KEY_DEFAULTKEY) { + for (i = 0; i < (MAX_KEY_TABLE - 1); i++) { + if (!test_bit(i, &priv->key_entry_inuse)) { + set_bit(i, &priv->key_entry_inuse); + + key->hw_key_idx = i; + entry = key->hw_key_idx; + break; + } + } + } + + switch (key_type) { + case VNT_KEY_DEFAULTKEY: + /* default key last entry */ + entry = MAX_KEY_TABLE - 1; + key->hw_key_idx = entry; + fallthrough; + case VNT_KEY_ALLGROUP: + key_mode |= VNT_KEY_ALLGROUP; + if (onfly_latch) + key_mode |= VNT_KEY_ONFLY_ALL; + fallthrough; + case VNT_KEY_GROUP_ADDRESS: + key_mode |= mode; + fallthrough; + case VNT_KEY_GROUP: + key_mode |= (mode << 4); + key_mode |= VNT_KEY_GROUP; + break; + case VNT_KEY_PAIRWISE: + key_mode |= mode; + key_inx = 4; + break; + default: + return -EINVAL; + } + + if (onfly_latch) + key_mode |= VNT_KEY_ONFLY; + + if (mode == KEY_CTL_WEP) { + if (key->keylen == WLAN_KEY_LEN_WEP40) + key->key[15] &= 0x7f; + if (key->keylen == WLAN_KEY_LEN_WEP104) + key->key[15] |= 0x80; + } + + MACvSetKeyEntry(priv, key_mode, entry, key_inx, + bssid, (u32 *)key->key, priv->local_id); + + return 0; +} + +int vnt_set_keys(struct ieee80211_hw *hw, struct ieee80211_sta *sta, + struct ieee80211_vif *vif, struct ieee80211_key_conf *key) +{ + struct ieee80211_bss_conf *conf = &vif->bss_conf; + struct vnt_private *priv = hw->priv; + u8 *mac_addr = NULL; + u8 key_dec_mode = 0; + int ret = 0; + u32 u; + + if (sta) + mac_addr = &sta->addr[0]; + + switch (key->cipher) { + case 0: + for (u = 0 ; u < MAX_KEY_TABLE; u++) + MACvDisableKeyEntry(priv, u); + return ret; + + case WLAN_CIPHER_SUITE_WEP40: + case WLAN_CIPHER_SUITE_WEP104: + for (u = 0; u < MAX_KEY_TABLE; u++) + MACvDisableKeyEntry(priv, u); + + vnt_set_keymode(hw, mac_addr, + key, VNT_KEY_DEFAULTKEY, KEY_CTL_WEP, true); + + key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; + + return ret; + case WLAN_CIPHER_SUITE_TKIP: + key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; + key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; + + key_dec_mode = KEY_CTL_TKIP; + + break; + case WLAN_CIPHER_SUITE_CCMP: + key_dec_mode = KEY_CTL_CCMP; + + key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; + } + + if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) { + vnt_set_keymode(hw, mac_addr, + key, VNT_KEY_PAIRWISE, key_dec_mode, true); + } else { + vnt_set_keymode(hw, mac_addr, + key, VNT_KEY_DEFAULTKEY, key_dec_mode, true); + + vnt_set_keymode(hw, (u8 *)conf->bssid, + key, VNT_KEY_GROUP_ADDRESS, key_dec_mode, true); + } + + return 0; +} |