From: Stephen Rothwell <sfr@canb.auug.org.au>
To: Alexander Duyck <alexander.duyck@gmail.com>
Cc: Sven-Haegar Koch <haegar@sdinet.de>,
Eli Cooper <elicooper@gmx.com>, Netdev <netdev@vger.kernel.org>,
Eric Dumazet <eric.dumazet@gmail.com>
Subject: Re: Large performance regression with 6in4 tunnel (sit)
Date: Tue, 29 Nov 2016 09:38:09 +1100 [thread overview]
Message-ID: <20161129093809.45bae6d1@canb.auug.org.au> (raw)
In-Reply-To: <CAKgT0Ue3f0hUnCvwBupqmhBE_bbxZUO7ODXsz2cbHrPu5gAqyA@mail.gmail.com>
Hi Alex,
On Mon, 28 Nov 2016 13:32:21 -0800 Alexander Duyck <alexander.duyck@gmail.com> wrote:
>
> So I think I have this root caused. The problem seems to be the fact
> that I chose to use lco_csum when trying to cancel out the inner IP
> header from the checksum and it turns out that the transport offset is
> never updated in the case of these tunnels.
>
> For now a workaround is to just set tx-gso-partial to off on the
> interface the tunnel is running over and you should be able to pass
> traffic without any issues.
OK, so that works (even with gso and tso set to "on" on the sit
interface). Thanks.
> I have a patch for igb/igbvf that should be out in the next hour or so
> which should address it.
That will be a bit harder to test, but I will see what I can do.
--
Cheers,
Stephen Rothwell
next prev parent reply other threads:[~2016-11-28 22:38 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-25 1:09 Large performance regression with 6in4 tunnel (sit) Stephen Rothwell
2016-11-25 2:18 ` Eli Cooper
2016-11-25 2:45 ` Stephen Rothwell
2016-11-25 3:01 ` Eric Dumazet
2016-11-25 3:09 ` Stephen Rothwell
2016-11-25 3:54 ` Eric Dumazet
2016-11-25 6:12 ` Stephen Rothwell
2016-11-25 4:06 ` Sven-Haegar Koch
2016-11-27 3:23 ` Stephen Rothwell
2016-11-28 17:54 ` Lance Richardson
2016-11-28 19:49 ` Lance Richardson
2016-11-28 21:32 ` Alexander Duyck
2016-11-28 22:38 ` Stephen Rothwell [this message]
2016-11-25 6:05 ` Eli Cooper
2016-11-27 0:54 ` Stephen Rothwell
2016-11-27 2:02 ` Stephen Rothwell
2016-11-27 16:22 ` Eli Cooper
2016-11-25 2:30 ` Eric Dumazet
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