Subject: Re: [RFC PATCH v2 1/5] bpf: add PHYS_DEV prog type for early driver filter

From: Jesper Dangaard Brouer <[email-masked]>
Date: Sat, 9 Apr 2016 14:27:59 +0200

On Sat, 9 Apr 2016 08:17:04 -0300
Tom Herbert <[email-masked]> wrote:

> One other API issue is how to deal with encapsulation. In this case a
> header may be prepended to the packet, I assume there are BPF helper
> functions and we don't need to return a new length or start?

That reminds me.  Do the BPF program need to know the head-room, then?

-- 
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