netdev - Re: [PATCH net-next v4 4/6] sfc: allocate channels for XDP tx queues

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Message-ID: <20191031210409.0b45a68c@carbon>
Date:   Thu, 31 Oct 2019 21:04:09 +0100
From:   Jesper Dangaard Brouer <brouer@...hat.com>
To:     Charles McLachlan <cmclachlan@...arflare.com>
Cc:     <davem@...emloft.net>, <netdev@...r.kernel.org>,
        <linux-net-drivers@...arflare.com>, brouer@...hat.com
Subject: Re: [PATCH net-next v4 4/6] sfc: allocate channels for XDP tx
 queues

On Thu, 31 Oct 2019 10:23:49 +0000
Charles McLachlan <cmclachlan@...arflare.com> wrote:

> Each CPU needs access to its own queue to allow uncontested
> transmission of XDP_TX packets. This means we need to allocate (up
> front) enough channels ("xdp transmit channels") to provide at least
> one extra tx queue per CPU. These tx queues should not do TSO.
> 
> Signed-off-by: Charles McLachlan <cmclachlan@...arflare.com>

Acked-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