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xen-devel
Re: [Xen-devel] [PATCH] Network Checksum Removal
On 25 May 2005, at 22:47, Keir Fraser wrote:
This may be a hard one to fix. The problem is probably that the
packets coming from domU haven't been checksummed, so a checksum check
will fail. We set ip_summed==CHECKSUM_UNNECESSARY, but perhaps the
firewall code checksums anyway, or the bridge is clobbering ip_summed
when it locally delivers. :-(
Perhaps not so hard....
Try modifying tcp_error() in
net/ipv4/netfilter/ip_conntrack_proto_tcp.c.
Wrap the entire if statement that checks for invalid checksum in:
if ( skb->ip_summed != CHECKSUM_UNNECESSARY ) {
<checksum checking code goes here>
}
I expect this should solve the problem. :-)
-- Keir
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