netdev - Re: iproute2: tc deletion freezes whole server

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Message-ID: <CAM_iQpV71mVNn30bgOzGyjxKeD+2HS+MwJBdrq8Vg-g2HzM1aA@mail.gmail.com>
Date:   Tue, 19 May 2020 10:56:47 -0700
From:   Cong Wang <xiyou.wangcong@...il.com>
To:     Václav Zindulka <vaclav.zindulka@...pnet.cz>
Cc:     Linux Kernel Network Developers <netdev@...r.kernel.org>
Subject: Re: iproute2: tc deletion freezes whole server

On Tue, May 19, 2020 at 1:04 AM Václav Zindulka
<vaclav.zindulka@...pnet.cz> wrote:
> >
> > Let me think how to fix this properly, I have some ideas and will provide
> > you some patch(es) to test soon.
>
> Sure, I'll wait. I have plenty of time now with the main problem fixed :-)

Can you help to test the patches below?
https://github.com/congwang/linux/commits/qdisc_reset2

I removed the last patch you previously tested and added two
more patches on top. These two patches should get rid of most
of the unnecessary resets. I tested them with veth pair with 8 TX
queues, but I don't have any real physical NIC to test.

Thanks.