diff mbox

[V2,1/2] af_packet: make tpacket_rcv to not set status value before run_filter

Message ID 1427091073-8129-1-git-send-email-al.drozdov@gmail.com
State Accepted, archived
Delegated to: David Miller
Headers show

Commit Message

Alexander Drozdov March 23, 2015, 6:11 a.m. UTC 
It is just an optimization. We don't need the value of status variable
if the packet is filtered.

Signed-off-by: Alexander Drozdov <al.drozdov@gmail.com>
---
 net/packet/af_packet.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

Comments

David Miller March 24, 2015, 2:01 a.m. UTC | #1 
From: Alexander Drozdov <al.drozdov@gmail.com>
Date: Mon, 23 Mar 2015 09:11:12 +0300

> It is just an optimization. We don't need the value of status variable
> if the packet is filtered.
> 
> Signed-off-by: Alexander Drozdov <al.drozdov@gmail.com>

Applied to net-next
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diff mbox

Patch

diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index f8db706..6ecf8dd 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -1910,14 +1910,15 @@  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;