netdev - skbuff: Copy csum instead of csum_start/csum

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Date:	Sat, 23 May 2009 18:20:02 +1000
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org
Subject: skbuff: Copy csum instead of csum_start/csum_offset

Hi:

skbuff: Copy csum instead of csum_start/csum_offset

It's easier to copy the u32 csum instead of its two u16
constituents.

Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>

diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index cb58b4b..d429c41 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -526,8 +526,7 @@ static void __copy_skb_header(struct sk_buff *new, const struct sk_buff *old)
 	new->sp			= secpath_get(old->sp);
 #endif
 	memcpy(new->cb, old->cb, sizeof(old->cb));
-	new->csum_start		= old->csum_start;
-	new->csum_offset	= old->csum_offset;
+	new->csum		= old->csum;
 	new->local_df		= old->local_df;
 	new->pkt_type		= old->pkt_type;
 	new->ip_summed		= old->ip_summed;

Cheers,
-- 
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Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
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