netdev - Re: [PATCH v8 04/11] net/mlx4_en: add support for fast rx drop bpf program

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Message-ID: <20160715204510.19a12bd3@redhat.com>
Date:	Fri, 15 Jul 2016 20:45:10 +0200
From:	Jesper Dangaard Brouer <brouer@...hat.com>
To:	Tom Herbert <tom@...bertland.com>
Cc:	Brenden Blanco <bblanco@...mgrid.com>,
	"David S. Miller" <davem@...emloft.net>,
	Linux Kernel Network Developers <netdev@...r.kernel.org>,
	Jamal Hadi Salim <jhs@...atatu.com>,
	Saeed Mahameed <saeedm@....mellanox.co.il>,
	Martin KaFai Lau <kafai@...com>, Ari Saha <as754m@....com>,
	Alexei Starovoitov <alexei.starovoitov@...il.com>,
	Or Gerlitz <gerlitz.or@...il.com>,
	john fastabend <john.fastabend@...il.com>,
	Hannes Frederic Sowa <hannes@...essinduktion.org>,
	Thomas Graf <tgraf@...g.ch>,
	Daniel Borkmann <daniel@...earbox.net>, brouer@...hat.com
Subject: Re: [PATCH v8 04/11] net/mlx4_en: add support for fast rx drop bpf
 program

On Fri, 15 Jul 2016 11:08:06 -0700
Tom Herbert <tom@...bertland.com> wrote:

> On Thu, Jul 14, 2016 at 12:25 AM, Jesper Dangaard Brouer
> <brouer@...hat.com> wrote:
> >
> > I would really really like to see the XDP program associated with the
> > RX ring queues, instead of a single XDP program covering the entire NIC.
> > (Just move the bpf_prog pointer to struct mlx4_en_rx_ring)
> >  
> I think it would be helpful to have some concrete implementation to
> look at for this. Jesper, can you code up some patches, taking into
> account Alexei's concerns about the atomic program update problem?.

Bad timing, as I'm going on 3 weeks vacation from today.

-- 
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