Subject: Re: [PATCH nf-next] netfilter: xt_bpf: support ebpf

From: Florian Westphal <[email-masked]>
Date: Mon, 5 Dec 2016 22:30:01 +0100

Eric Dumazet <[email-masked]> wrote:
> On Mon, 2016-12-05 at 15:28 -0500, Willem de Bruijn wrote:
> > From: Willem de Bruijn <[email-masked]>
> > 
> > Add support for attaching an eBPF object by file descriptor.
> > 
> > The iptables binary can be called with a path to an elf object or a
> > pinned bpf object. Also pass the mode and path to the kernel to be
> > able to return it later for iptables dump and save.
> > 
> > Signed-off-by: Willem de Bruijn <[email-masked]>
> > ---
> 
> Assuming there is no simple way to get variable matchsize in iptables,
> this looks good to me, thanks.

It should be possible by setting kernel .matchsize to ~0 which
suppresses strict size enforcement.

Its currently only used by ebt_among, but this should work for any xtables
module.