tree 65ac7b9220184e96c89626a39df3d45715e7171c
parent 3015d5d4e5b15eddea272a697e83391100581932
author Herbert Xu <herbert@gondor.apana.org.au> 1157062262 -0700
committer David S. Miller <davem@sunset.davemloft.net> 1158963524 -0700

[TCP]: Fix rcv mss estimate for LRO

By passing a Linux-generated TSO packet straight back into Linux, Xen
becomes our first LRO user :) Unfortunately, there is at least one spot
in our stack that needs to be changed to cope with this.

The receive MSS estimate is computed from the raw packet size.  This is
broken if the packet is GSO/LRO.  Fortunately the real MSS can be found
in gso_size so we simply need to use that if it is non-zero.

Real LRO NICs should of course set the gso_size field in future.

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