Re: PATCH WAS( Re: [ANNOUNCE] iproute2 v2.6.25

[Thomas Graf <tgraf@suug.ch>]

* jamal <hadi@cyberus.ca> 2008-04-21 10:21
> On Mon, 2008-21-04 at 15:39 +0200, Patrick McHardy wrote:
> 
> > 
> > Yes, that would be nice, the iproute netlink infrastructure is really
> > lagging behind. 
> 
> Agreed.
> 
> > I'm not sure which way would be preferrable, build
> > something new on top of libnl without disturbing existing users or
> > gradually port iproute on top of libnl, probably starting with the
> > netlink infrastructure.
> 
> I would say build something new would be the proper way to go. Maintain
> output of ip/tc/ifconfig/route and phase them out slowly.

Personally I'm in favour of having many small tools like git, i.e.
rtnl-link-add, rtnl-link-list, etc.

Tools like NetworkManager are already using or currently being ported to
libnl and will hide almost all trivial networking configuration tasks
behind a nice gui.

Alternatively there can be an advanced configuration tool with a focus
on Linux being used as a router.

> The majority of new users out there may not have the same challenges i
> had:
> I wanted to do some simple things in a short period; i knew how to use
> libnetlink - i thought the mapping would be easy to follow from
> libnetlink to libnl; after a few hours, rather than investing more time
> i found it easier to update things on top of libnetlink.
> People who are totaly starting may find it easier to learn libnl first.
> I certainly do plan to poke fingers at libnl - i just happen to have
> something that works.

I'm not going to argue with you Jamal :-) In fact I'm pretty sure that
most of the basic tasks are really trivial with libnl and many common
tasks are now accessible via clean interfaces. I agree though that the
number of functions makes it difficult to find the proper interfaces.
That's why I'm thinking about splitting things up in components like
libnl, libnl-link, libnl-tc, etc. to separate the actual netlink library
from netlink family implementations. Won't happen before 2.0 though.