tree be9b1009500891d7598a2c19a63fad9c0a28f17c
parent 8e5b9dda99cc86bdbd822935fcc37c5808e271b3
author Herbert Xu <herbert@gondor.apana.org.au> 1246212401 +0000
committer David S. Miller <davem@davemloft.net> 1246329703 -0700

tcp: Do not tack on TSO data to non-TSO packet

If a socket starts out on a non-TSO route, and then switches to
a TSO route, then we will tack on data to the tail of the tx queue
even if it started out life as non-TSO.  This is suboptimal because
all of it will then be copied and checksummed unnecessarily.

This patch fixes this by ensuring that skb->ip_summed is set to
CHECKSUM_PARTIAL before appending extra data beyond the MSS.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>