Re: [RFC] libnfnetlink and iface conversion to string

[Patrick McHardy <kaber@trash.net>]

Pablo Neira Ayuso wrote:
> Eric Leblond wrote:
> 
>>I'm currently working on NuFW where I try to do iface conversion from
>>integer to string to be able to filter "naturally" on interfaces.
>>
>>For now, it is impossible to do this conversion from either
>>libnetfilter_queue or libnfnetlink. But there is two files in
>>libnfnetlink (iftable.c and rntl.c) which have been put here by Harald
>>to provide this conversion (if I remember correctly an old mail from
>>Harald).
>>
>>It was a long time ago and I don't know if it still planned to modify
>>libnfnetlink to include this feature. Or, would it be a better choice to
>>create a new library dedicated to this conversion.

There already is libnl .. it may be a bit overkill if all you
need is ifindex<->ifname conversion though.

> Interesting question. Since this is related with the rtnetlink
> subsystem, I'm unsure that this feature naturally belongs to
> libnfnetlink nor to libnetfilter_queue.
> 
> However, IMO libnetfilter_queue should provide enough features to let
> userspace apps implement filtering without requiring extra dependencies.

Agreed, this would be a good addition in my opinion. Probably
better to keep in it libnfnetlink since that doesn't require
people to unnecessarily link libnfnetlink_queue just for this.