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[MAC80211]: ignore key index on pairwise key (WEP only)

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Work-around for broken APs that use a non-zero key index for WEP
pairwise keys. With this patch, WEP encryption only is exempt from
providing a zero key index.

Signed-off-by: Volker Braun <volker.braun@physik.hu-berlin.de>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Michael Wu <flamingice@sourmilk.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Volker Braun 2007-09-14 11:10:25 -04:00 committed by David S. Miller
parent c39e3a0d03
commit 139c3a0492
1 changed files with 12 additions and 6 deletions
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18
net/mac80211/ieee80211_ioctl.c
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@ -73,17 +73,23 @@ static int ieee80211_set_encryption(struct net_device *dev, u8 *sta_addr,
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (idx < 0 || idx >= NUM_DEFAULT_KEYS) {
printk(KERN_DEBUG "%s: set_encrypt - invalid idx=%d\n",
dev->name, idx);
return -EINVAL;
}
if (is_broadcast_ether_addr(sta_addr)) {
sta = NULL;
if (idx >= NUM_DEFAULT_KEYS) {
printk(KERN_DEBUG "%s: set_encrypt - invalid idx=%d\n",
dev->name, idx);
return -EINVAL;
}
key = sdata->keys[idx];
} else {
set_tx_key = 0;
if (idx != 0) {
/*
* According to the standard, the key index of a pairwise
* key must be zero. However, some AP are broken when it
* comes to WEP key indices, so we work around this.
*/
if (idx != 0 && alg != ALG_WEP) {
printk(KERN_DEBUG "%s: set_encrypt - non-zero idx for "
"individual key\n", dev->name);
return -EINVAL;