From: Julian Anastasov <ja@ssi.bg>
Date: Sun, 17 Oct 2010 13:17:20 +0000 (+0300)
Subject: ipvs: optimize checksums for apps
X-Git-Tag: v2.6.37-rc1~147^2~3^2^2~11
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8b27b10f5863a5b63e46304a71aa01463d1efac4;p=pandora-kernel.git

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>
---

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