On Fri, 16 Sep 2016 13:43:50 -0700
Brenden Blanco <bbla...@plumgrid.com> wrote:
> On Fri, Sep 16, 2016 at 10:36:12PM +0200, Jesper Dangaard Brouer wrote:
> > The XDP_TX action can fail transmitting the frame in case the TX ring
> > is full or port is down. In case of TX failure it should drop the
> > frame, and not as now call 'break' which is the same as XDP_PASS.
> >
> > Fixes: 9ecc2d86171a ("net/mlx4_en: add xdp forwarding and data write
> > support")
> > Signed-off-by: Jesper Dangaard Brouer <bro...@redhat.com>
>
> You could in theory have also tried to recycle the page instead of
> dropping it, but that's probably not worth optimizing when tx is backed
> up, as you'll only save a handful of page_put's. The code to do so
> wouldn't have been pretty.
Yes, we could (and perhaps should) recycle the page instead. But as you
also mention it would not look pretty. I'll send a V3, as XDPs primary
concern is performance.
> Reviewed-by: Brenden Blanco <bbla...@plumgrid.com>
--
Best regards,
Jesper Dangaard Brouer
MSc.CS, Principal Kernel Engineer at Red Hat
Author of http://www.iptv-analyzer.org
LinkedIn: http://www.linkedin.com/in/brouer
