mac80211: Add RX flag to indicate ICV stripped
commit cef0acd4d7d4811d2d19cd0195031bf0dfe41249 upstream.
Add a flag that indicates that the WEP ICV was stripped from an
RX packet, allowing the device to not transfer that if it's
already checked.
Signed-off-by: David Spinadel <david.spinadel@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Cc: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/net/mac80211/wpa.c b/net/mac80211/wpa.c
index 5c71d60..caa5986 100644
--- a/net/mac80211/wpa.c
+++ b/net/mac80211/wpa.c
@@ -295,7 +295,8 @@
return RX_DROP_UNUSABLE;
/* Trim ICV */
- skb_trim(skb, skb->len - IEEE80211_TKIP_ICV_LEN);
+ if (!(status->flag & RX_FLAG_ICV_STRIPPED))
+ skb_trim(skb, skb->len - IEEE80211_TKIP_ICV_LEN);
/* Remove IV */
memmove(skb->data + IEEE80211_TKIP_IV_LEN, skb->data, hdrlen);