netdev - Re: [PATCH RFC 1/3] xdp: Infrastructure to generalize XDP

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Message-ID: <20160921185833.GC15732@pox.localdomain>
Date:   Wed, 21 Sep 2016 20:58:33 +0200
From:   Thomas Graf <tgraf@...g.ch>
To:     Tom Herbert <tom@...bertland.com>
Cc:     Jakub Kicinski <kubakici@...pl>, Alexei Starovoitov <ast@...com>,
        "David S. Miller" <davem@...emloft.net>,
        Linux Kernel Network Developers <netdev@...r.kernel.org>,
        Kernel Team <kernel-team@...com>,
        Tariq Toukan <tariqt@...lanox.com>,
        Brenden Blanco <bblanco@...mgrid.com>,
        Alexei Starovoitov <alexei.starovoitov@...il.com>,
        Eric Dumazet <eric.dumazet@...il.com>,
        Jesper Dangaard Brouer <brouer@...hat.com>
Subject: Re: [PATCH RFC 1/3] xdp: Infrastructure to generalize XDP

On 09/21/16 at 11:50am, Tom Herbert wrote:
> 50 lines in one driver is not a big deal, 50 lines in a hundred
> drivers is! I learned this lesson in BQL which was well abstracted out
> to be minimally invasive but we still saw many issues because of the
> pecularities of different drivers.

You want to enable XDP in a hundred drivers? Are you planning to
deploy ISA NIC based ILA routers? ;-)