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net: Fix skb_copy_expand() handling of ->csum_start
author
David S. Miller
<davem@davemloft.net>
Thu, 22 Jul 2010 20:27:09 +0000
(13:27 -0700)
committer
David S. Miller
<davem@davemloft.net>
Thu, 22 Jul 2010 20:27:09 +0000
(13:27 -0700)
It should only be adjusted if ip_summed == CHECKSUM_PARTIAL.
Signed-off-by: David S. Miller <davem@davemloft.net>
net/core/skbuff.c
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diff --git
a/net/core/skbuff.c
b/net/core/skbuff.c
index c699159b3ede4a89c0b50e508a313bde507fdf1b..ce88293a34e263000dd93c0df5690885a857d797 100644
(file)
--- a/
net/core/skbuff.c
+++ b/
net/core/skbuff.c
@@
-932,7
+932,8
@@
struct sk_buff *skb_copy_expand(const struct sk_buff *skb,
copy_skb_header(n, skb);
off = newheadroom - oldheadroom;
- n->csum_start += off;
+ if (n->ip_summed == CHECKSUM_PARTIAL)
+ n->csum_start += off;
#ifdef NET_SKBUFF_DATA_USES_OFFSET
n->transport_header += off;
n->network_header += off;