Pablo Neira Ayuso <pa...@netfilter.org> wrote:
> > > + ct = nf_ct_get(entry->skb, &ctinfo);
> > > + if (ct && !nf_ct_is_confirmed(ct) &&
> > > + verdict != NF_STOLEN && verdict != NF_DROP) {
> >
> > Why not verdict == NF_ACCEPT?
>
> We also have to deal with NF_STOP, right?
Indeed, right. Your call, if you prefer this rather
than ACCEPT || STOP then keep it as-is.
> > I think failopen can use nf_reinject since we didn't queue packet to
> > userspace.
>
> Yes, that's fine. I just used nfqnl_reinject() for consistency, so all
> code uses it.
Ok, I'm fine with that.
> > > @@ -1208,7 +1233,7 @@ static int nfqnl_recv_verdict(struct net *net,
> > > struct sock *ctnl,
> > > if (nfqa[NFQA_MARK])
> > > entry->skb->mark = ntohl(nla_get_be32(nfqa[NFQA_MARK]));
> > >
> > > - nf_reinject(entry, verdict);
> > > + nfqnl_reinject(entry, verdict);
> >
> > I wonder if we should make nfqnl_reinject dependent on
> > nfqa[NFQA_PAYLOAD] ?
> >
> > (i.e., should we munge payload in case userspcae already did so?)
>
> You mean, skip this codepath if nfqa[NFQA_PAYLOAD] is set, right?
> Given this may be a userspace helper doing packet mangling?
Yes, although I guess such userspace already needs to NOTRACK things
in current kernels to prevent conntrack from acting up.
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