Re: libnfnetlink dependency elimination (doc)

[Duncan Roe <duncan_roe@optusnet.com.au>]

On Wed, Nov 15, 2023 at 10:27:34AM +0100, Pablo Neira Ayuso wrote:
> On Wed, Nov 15, 2023 at 10:04:47AM +1100, Duncan Roe wrote:
> > Hi Pablo,
> >
> > On Tue, Nov 14, 2023 at 04:24:11PM +0100, Pablo Neira Ayuso wrote:
> > > On Sun, Nov 12, 2023 at 05:59:21PM +1100, Duncan Roe wrote:
> > > > Some of these documented changes haven't happened yet.
> > >
> > > Then we have to start by changes first, not the other way around.
> >
> > Yes I know that, obviously:)
> >
> > The point here is that nfnl_rcvbufsiz() has been advertised in the main page of
> > libnetfilter_queue HTML for a long time and there are likely a number of systems
> > out there that use it. When libnfnetlink is removed, libnetfilter_queue will
> > have to provide nfnl_rcvbufsiz() or those systems will start failing.
>
> There is nfq_fd() and setsockopt() that you can use:
>
>         setsockopt(fd, SOL_SOCKET, SO_RCVBUFFORCE, &size, socklen);
>         setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &size, socklen);

Yes
>
> libnfnetlink is **deprecated** and it will be removed at some point,
> the git log shows that it has less and less users.

Good to know
>
> main libnfnetlink users are the libnetfilter_* libraries.

Yes
>
> No new application should be using libnfnetlink in 2023.

Yes

But please see thread starting
> [PATCH libnetfilter_queue] utils: Add example of setting socket buffer size
I meant to send my reply to that email, not this one.

Again sorry for the confusion I've caused.

Cheers ... Duncan.