diff options
| author | Harvey Harrison <harvey.harrison@gmail.com> | 2008-07-15 18:44:02 -0700 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2008-08-22 16:29:53 -0400 |
| commit | 798ee9850e9bf94b4436f9c7238823322e326885 (patch) | |
| tree | d4af4eb4ec0c75d21b8b353ba04029c2285a4fd6 | |
| parent | 7294ec955cb0c3eeefca2f4dd271c8068ab4edc5 (diff) | |
ath5k: explicitly check skb->len
ieee80211_get_hdrlen_from_skb internally checks that the skb is long
enough to hold the full header, or it returns 0 if not. The check in
ath5k does not check this case and assumes it always got the actual
header length which it then checks against the skb->len plus some headroom.
Change to ieee80211_hdrlen which always returns the hdrlen and keep the
existing headroom check.
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
| -rw-r--r-- | drivers/net/wireless/ath5k/base.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/net/wireless/ath5k/base.c b/drivers/net/wireless/ath5k/base.c index 114520258b7..c1de1ef09e5 100644 --- a/drivers/net/wireless/ath5k/base.c +++ b/drivers/net/wireless/ath5k/base.c @@ -1540,7 +1540,7 @@ ath5k_rx_decrypted(struct ath5k_softc *sc, struct ath5k_desc *ds, struct sk_buff *skb, struct ath5k_rx_status *rs) { struct ieee80211_hdr *hdr = (void *)skb->data; - unsigned int keyix, hlen = ieee80211_get_hdrlen_from_skb(skb); + unsigned int keyix, hlen; if (!(rs->rs_status & AR5K_RXERR_DECRYPT) && rs->rs_keyix != AR5K_RXKEYIX_INVALID) @@ -1549,6 +1549,7 @@ ath5k_rx_decrypted(struct ath5k_softc *sc, struct ath5k_desc *ds, /* Apparently when a default key is used to decrypt the packet the hw does not set the index used to decrypt. In such cases get the index from the packet. */ + hlen = ieee80211_hdrlen(hdr->frame_control); if (ieee80211_has_protected(hdr->frame_control) && !(rs->rs_status & AR5K_RXERR_DECRYPT) && skb->len >= hlen + 4) { |