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authorJohannes Berg <johannes.berg@intel.com>2010-10-10 20:52:10 +0400
committerJohn W. Linville <linville@tuxdriver.com>2010-10-11 23:04:23 +0400
commit730bd83b036e72b0134352ca27e76ea08475fbf1 (patch)
tree541b14e5985928d513011b1347e10bf6f3cda55c /net/mac80211/wep.c
parentcc2858c987f41286e059ee777c3bc09f7b7c19f6 (diff)
downloadlinux-730bd83b036e72b0134352ca27e76ea08475fbf1.tar.xz
mac80211: don't kmalloc 16 bytes
Since this small buffer isn't used for DMA, we can simply allocate it on the stack, it just needs to be 16 bytes of which only 8 will be used for WEP40 keys. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/wep.c')
-rw-r--r--net/mac80211/wep.c8
1 files changed, 1 insertions, 7 deletions
diff --git a/net/mac80211/wep.c b/net/mac80211/wep.c
index f27484c22b9f..2ff6d1e3ed21 100644
--- a/net/mac80211/wep.c
+++ b/net/mac80211/wep.c
@@ -222,7 +222,7 @@ static int ieee80211_wep_decrypt(struct ieee80211_local *local,
struct ieee80211_key *key)
{
u32 klen;
- u8 *rc4key;
+ u8 rc4key[3 + WLAN_KEY_LEN_WEP104];
u8 keyidx;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
unsigned int hdrlen;
@@ -245,10 +245,6 @@ static int ieee80211_wep_decrypt(struct ieee80211_local *local,
klen = 3 + key->conf.keylen;
- rc4key = kmalloc(klen, GFP_ATOMIC);
- if (!rc4key)
- return -1;
-
/* Prepend 24-bit IV to RC4 key */
memcpy(rc4key, skb->data + hdrlen, 3);
@@ -260,8 +256,6 @@ static int ieee80211_wep_decrypt(struct ieee80211_local *local,
len))
ret = -1;
- kfree(rc4key);
-
/* Trim ICV */
skb_trim(skb, skb->len - WEP_ICV_LEN);