netdev - Re: [PATCH RFC v4 bpf-next 09/11] tun: Support xdp in the Tx path for xdp

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Message-ID: <20200310100323.14a2a011@carbon>
Date:   Tue, 10 Mar 2020 10:03:23 +0100
From:   Jesper Dangaard Brouer <brouer@...hat.com>
To:     David Ahern <dahern@...italocean.com>
Cc:     David Ahern <dsahern@...nel.org>, netdev@...r.kernel.org,
        davem@...emloft.net, kuba@...nel.org,
        prashantbhole.linux@...il.com, jasowang@...hat.com,
        toke@...hat.com, mst@...hat.com, toshiaki.makita1@...il.com,
        daniel@...earbox.net, john.fastabend@...il.com, ast@...nel.org,
        kafai@...com, songliubraving@...com, yhs@...com, andriin@...com,
        dsahern@...il.com, brouer@...hat.com
Subject: Re: [PATCH RFC v4 bpf-next 09/11] tun: Support xdp in the Tx path
 for xdp_frames

On Mon, 9 Mar 2020 21:44:22 -0600
David Ahern <dahern@...italocean.com> wrote:

> On 3/9/20 9:06 PM, David Ahern wrote:
> > Why do I need to make any adjustments beyond what is done by
> > bpf_xdp_adjust_head and bpf_xdp_adjust_tail?  
> 
> never mind. forgot the switch from xdp_frame to xdp_buff there so need
> to go back to frame.

Yes exactly, glad you realized this yourself ;-)

-- 
Best regards,
  Jesper Dangaard Brouer
  MSc.CS, Principal Kernel Engineer at Red Hat
  LinkedIn: http://www.linkedin.com/in/brouer