netdev - Re: [bpf-next V4 PATCH 8/8] samples/bpf: xdp_monitor use err code from tracepoint xdp:xdp_devmap

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Message-ID: <20180518224843.4d54b73c@redhat.com>
Date:   Fri, 18 May 2018 22:48:43 +0200
From:   Jesper Dangaard Brouer <brouer@...hat.com>
To:     netdev@...r.kernel.org, Daniel Borkmann <borkmann@...earbox.net>,
        Alexei Starovoitov <alexei.starovoitov@...il.com>,
        Jesper Dangaard Brouer <brouer@...hat.com>
Cc:     Christoph Hellwig <hch@...radead.org>,
        BjörnTöpel <bjorn.topel@...el.com>,
        Magnus Karlsson <magnus.karlsson@...el.com>,
        makita.toshiaki@....ntt.co.jp
Subject: Re: [bpf-next V4 PATCH 8/8] samples/bpf: xdp_monitor use err code
 from tracepoint xdp:xdp_devmap_xmit

On Fri, 18 May 2018 15:35:12 +0200
Jesper Dangaard Brouer <brouer@...hat.com> wrote:

> Update xdp_monitor to use the recently added err code introduced
> in tracepoint xdp:xdp_devmap_xmit, to show if the drop count is
> caused by some driver general delivery problem.  Other kind of drops
> will likely just be more normal TX space issues.

Signed-off-by: Jesper Dangaard Brouer <brouer@...hat.com>

-- 
Best regards,
  Jesper Dangaard Brouer
  MSc.CS, Principal Kernel Engineer at Red Hat
  LinkedIn: http://www.linkedin.com/in/brouer