Commit 68c2e5de authored by Alexander Drozdov's avatar Alexander Drozdov Committed by David S. Miller
Browse files

af_packet: make tpacket_rcv to not set status value before run_filter 



It is just an optimization. We don't need the value of status variable
if the packet is filtered.

Signed-off-by: default avatarAlexander Drozdov <al.drozdov@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent c6973669

net/packet/af_packet.c

+4 −3
Original line number Diff line number Diff line
@@ -1916,14 +1916,15 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev, 
		}

	}



	if (skb->ip_summed == CHECKSUM_PARTIAL)

		status |= TP_STATUS_CSUMNOTREADY;



	snaplen = skb->len;



	res = run_filter(skb, sk, snaplen);

	if (!res)

		goto drop_n_restore;



	if (skb->ip_summed == CHECKSUM_PARTIAL)

		status |= TP_STATUS_CSUMNOTREADY;



	if (snaplen > res)

		snaplen = res;