netdev - Re: [PATCH v3 net-next 08/14] mlx4: use order-0 pages for RX

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Message-ID: <CANn89iK6Ecf2NNxKLy83WYK3WnuinGWc9J03UOpFROOWqE=Bog@mail.gmail.com>
Date:   Tue, 14 Feb 2017 13:56:47 -0800
From:   Eric Dumazet <edumazet@...gle.com>
To:     Jesper Dangaard Brouer <brouer@...hat.com>
Cc:     Alexander Duyck <alexander.duyck@...il.com>,
        Tariq Toukan <ttoukan.linux@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        netdev <netdev@...r.kernel.org>,
        Tariq Toukan <tariqt@...lanox.com>,
        Martin KaFai Lau <kafai@...com>,
        Saeed Mahameed <saeedm@...lanox.com>,
        Willem de Bruijn <willemb@...gle.com>,
        Brenden Blanco <bblanco@...mgrid.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Eric Dumazet <eric.dumazet@...il.com>,
        linux-mm <linux-mm@...ck.org>
Subject: Re: [PATCH v3 net-next 08/14] mlx4: use order-0 pages for RX

>
> This obviously does not work for the case I'm talking about
> (transmitting out another device with XDP).
>

XDP_TX does not handle this yet.

When XDP_TX was added, it was very clear that the transmit _had_ to be
done on the same port.

Since all this discussion happened in this thread ( mlx4: use order-0
pages for RX )
I was kind of assuming all the comments were relevant to current code or patch,
not future devs ;)