Re: npf: nbuf_ensure_contig and large options

[Maxime Villard <max%m00nbsd.net@localhost>]

Le 08/04/2018 à 16:56, Michael van Elst a écrit :
> rmind%netbsd.org@localhost (Mindaugas Rasiukevicius) writes:
>
> > Maxime Villard <max%m00nbsd.net@localhost> wrote:
> > > There probably aren't many reasons for an IPv6 packet to have an option
> > > located this far, but that's theoretically possible, and more importantly,
> > > correct specwise.
>
>
> > I do not see that as an NPF problem.  It expects the network stack to
> > support certain operations and, in this case, it is a limitation of the
> > mbuf interface and m_ensure_contig().
>
> Please also see RFC 7112.

I already came across this RFC, but I wasn't sure whether it was really
something we wanted; probably we do.