netdev - [PATCH net-next] net: gro: avoid double copy in skb_gro

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <1355251109.27891.114.camel@edumazet-glaptop>
Date:	Tue, 11 Dec 2012 10:38:29 -0800
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	David Miller <davem@...emloft.net>
Cc:	netdev <netdev@...r.kernel.org>
Subject: [PATCH net-next] net: gro: avoid double copy in skb_gro_receive()

From: Eric Dumazet <edumazet@...gle.com>

__copy_skb_header(nskb, p) already copied p->cb[], no need to copy
it again.

Signed-off-by: Eric Dumazet <edumazet@...gle.com>
---
 net/core/skbuff.c |    1 -
 1 file changed, 1 deletion(-)

diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index ccbabf5..ac9e44a 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -3028,7 +3028,6 @@ int skb_gro_receive(struct sk_buff **head, struct sk_buff *skb)
 	memcpy(skb_mac_header(nskb), skb_mac_header(p),
 	       p->data - skb_mac_header(p));
 
-	*NAPI_GRO_CB(nskb) = *NAPI_GRO_CB(p);
 	skb_shinfo(nskb)->frag_list = p;
 	skb_shinfo(nskb)->gso_size = pinfo->gso_size;
 	pinfo->gso_size = 0;


--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html