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mac80211: Add RX flag to indicate ICV stripped

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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>
This commit is contained in:
David Spinadel
2016-11-21 16:58:40 +02:00
committed by Johannes Berg
parent 93be2b7427
commit cef0acd4d7
3 changed files with 8 additions and 3 deletions
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3
net/mac80211/wpa.c
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@@ -294,7 +294,8 @@ ieee80211_crypto_tkip_decrypt(struct ieee80211_rx_data *rx)
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);