diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2010-10-10 18:52:10 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2010-10-11 15:04:23 -0400 |
| commit | 730bd83b036e72b0134352ca27e76ea08475fbf1 (patch) | |
| tree | 541b14e5985928d513011b1347e10bf6f3cda55c | |
| parent | cc2858c987f41286e059ee777c3bc09f7b7c19f6 (diff) | |
| download | blackbird-op-linux-730bd83b036e72b0134352ca27e76ea08475fbf1.tar.gz blackbird-op-linux-730bd83b036e72b0134352ca27e76ea08475fbf1.zip | |
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>
| -rw-r--r-- | net/mac80211/wep.c | 8 |
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); |
