tree e79c910646deccc50f5a108782f66cebffafa4d8
parent 67147ba99aeb48f2863e03b68e090088a34c1b5d
author Herbert Xu <herbert@gondor.apana.org.au> 1243363823 +0000
committer David S. Miller <davem@davemloft.net> 1243419957 -0700

gro: Only use skb_gro_header for completely non-linear packets

Currently skb_gro_header is used for packets which put the hardware
header in skb->data with the rest in frags.  Since the drivers that
need this optimisation all provide completely non-linear packets,
we can gain extra optimisations by only performing the frag0
optimisation for completely non-linear packets.

In particular, we can simply test frag0 (instead of skb_headlen)
to see whether the optimisation is in force.

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