commit 8b27b10f5863a5b63e46304a71aa01463d1efac4
author Julian Anastasov <ja@ssi.bg> Sun Oct 17 16:17:20 2010 +0300
committer Simon Horman <horms@verge.net.au> Thu Oct 21 10:50:02 2010 +0200
tree 89f5db8881b0297cda00cad3c2cdedf685e2757f
parent 5bc9068e9d962ca6b8bec3f0eb6f60ab4dee1d04

ipvs: optimize checksums for apps

 	Avoid full checksum calculation for apps that can provide
info whether csum was broken after payload mangling. For now only
ip_vs_ftp mangles payload and it updates the csum, so the full
recalculation is avoided for all packets.

 	Add CHECKSUM_UNNECESSARY for snat_handler (TCP and UDP).
It is needed to support SNAT from local address for the case
when csum is fully recalculated.

Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>