netdev - Re: xsk_buff

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Message-ID: <a52430d1e11c5cadcd08706bd6d8da3ea48e1c04.camel@coverfire.com>
Date:   Tue, 11 May 2021 10:01:43 -0400
From:   Dan Siemon <dan@...erfire.com>
To:     Magnus Karlsson <magnus.karlsson@...il.com>
Cc:     Network Development <netdev@...r.kernel.org>,
        Björn Töpel <bjorn@...nel.org>,
        "Karlsson, Magnus" <magnus.karlsson@...el.com>
Subject: Re: xsk_buff_pool.c trace

On Mon, 2021-05-10 at 08:15 +0200, Magnus Karlsson wrote:
> On Mon, May 10, 2021 at 3:59 AM Dan Siemon <dan@...erfire.com> wrote:
> > 
> > i40e NIC with 5.11.17-300.fc34.x86_64
> > 
> > Unfortunately, this does not consistently occur.
> > 
> > [ 2739.991807] ------------[ cut here ]------------
> > [ 2739.996428] Failed to disable zero-copy!
> 
> Could you please dump the error value that i40e_xsk_pool_disable
> returns? Just so I have something more to go on. There are three
> functions that can fail, xsk_get_pool_from_qid(),
> i40e_queue_pair_disable(), and i40e_queue_pair_enable(). If you can
> dig even deeper into what sub function of those functions that fail,
> even better. It would be ideal, if you could enable a function trace
> when you get into i40e_xsk_pool_disable so we would know exactly what
> function fails.

Thank you for taking a look. Unfortunately, I haven't been able to make
this happen consistently. If I can, I will try your suggestions.
>