From: Dmitry Skorodumov <sdmitry@parallels.com>
To: kvm@vger.kernel.org
Subject: Re: [PATCH] [NetKVM] Fix checksum verification for pkts with csum==0xffff
Date: Thu, 14 Mar 2013 12:52:16 +0000 (UTC) [thread overview]
Message-ID: <loom.20130314T134858-612@post.gmane.org> (raw)
In-Reply-To: 1363265152-11080-1-git-send-email-sdmitry@parallels.com
> Dmitry Skorodumov <sdmitry <at> parallels.com> writes:
>
> Windows-host with disabled TX-checksum offloading may send
> packets with tcp->checksum=0xffff. Most likely it is caused
> by by Windows algorithm for computing incremental checksum
> - see RFC 1624.
Forgot to mention that packets with checksum 0xffff appears almost 100%
if run from windows-host to kvm-guest
netperf -H <guest_addr> -t TCP_RR
Dmitry
prev parent reply other threads:[~2013-03-14 12:54 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-14 12:45 [PATCH] [NetKVM] Fix checksum verification for pkts with csum==0xffff Dmitry Skorodumov
2013-03-14 12:52 ` Dmitry Skorodumov [this message]
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