From: Jakub Kicinski <kuba@kernel.org>
To: David Laight <David.Laight@ACULAB.COM>
Cc: "netdev@vger.kernel.org" <netdev@vger.kernel.org>
Subject: Re: rawip: delayed and mis-sequenced transmits
Date: Wed, 6 Jul 2022 18:54:17 -0700 [thread overview]
Message-ID: <20220706185417.2fcbcdf0@kernel.org> (raw)
In-Reply-To: <433be56da42f4ab2b7722c1caed3a747@AcuMS.aculab.com>
On Wed, 6 Jul 2022 15:54:18 +0000 David Laight wrote:
> Anyone any ideas before I start digging through the kernel code?
If the qdisc is pfifo_fast and kernel is old there could be races.
But I don't think that's likely given you probably run something
recent and next packet tx would usually flush the stuck packet.
In any case - switching qdisc could be a useful test, also bpftrace
is your friend for catching patckets with long sojourn time.
next prev parent reply other threads:[~2022-07-07 1:54 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-06 15:54 rawip: delayed and mis-sequenced transmits David Laight
2022-07-07 1:54 ` Jakub Kicinski [this message]
2022-07-07 8:02 ` David Laight
2022-07-07 9:34 ` David Laight
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