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ath9k: fix crash with WEP in ad-hoc mode 

Commit eed8e22f01 added support for using
multicast key lookup to support per-vif/sta keys for AP and ad-hoc.
Unfortunately, it also introduced a crash in ad-hoc mode when the sta
pointer is NULL, which happens when setting up an interface with WEP
keys. This patch fixes it by falling back to the assigned key index.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Reported-by: Senthil Balasubramanian <senthilkumar@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Felix Fietkau 2010-07-02 14:45:22 +02:00 committed by John W. Linville
parent 347809fc2c
commit 8e67ca7c92
1 changed files with 4 additions and 0 deletions
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4
drivers/net/wireless/ath/ath9k/common.c
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@ -319,6 +319,10 @@ int ath9k_cmn_key_config(struct ath_common *common,
idx = ath_reserve_key_cache_slot(common, key->alg);
break;
case NL80211_IFTYPE_ADHOC:
if (!sta) {
idx = key->keyidx;
break;
}
memcpy(gmac, sta->addr, ETH_ALEN);
gmac[0] |= 0x01;
mac = gmac;