You forgot the draft, Andi. Although doesnt document every little detail
(someone should) -- it goes a long way to describe the architecture and
concepts behind netlink.
A not final version:
On Fri, 15 Nov 2002, Andi Kleen wrote:
> > > Physical devices are read using /proc/net/dev
> > ...
> > > That is the old fashioned way.
> > >
> > > The new fashioned one is to query them using rtnetlink. You use a
> > > RTM_GETADDR
> > > NLM_F_REQUEST query with wildcard (NLM_F_ROOT) to get a full list.
> > > See the netlink,rtnetlink, libnetlink manpages and iproute2 as an example.
> > > It is easier when you use libnetlink.
> > Do you have a snippet of code?
> Check iproute2 or zebra source. iproute2 has a libnetlink which is quite
> I also wrote some manpages (netlink(3),netlink(7),rtnetlink(7) etc, but
> admittedly they are not very good)
> > What kernel version does this start working?
> Somewhere in Linux 2.1.<late number>
> > Of course for code that needs to work with already deployed systems, you
> > need to have code for the old method around anyway...
> Only when you still want to support 2.0. Ok some people do not enable
> netlink in their kernel configuration, but many modern distributions
> require it for booting now (because the network init scripts use iproute2),
> so this shouldn't be a big issue anymore.