Re: [RFC PATCH 0/8] l2tp: introduce L2TPv3 support

[Patrick McHardy <kaber@trash.net>]

James Chapman wrote:
> Herbert Xu wrote:
>> James Chapman <jchapman@katalix.com> wrote:
>>> This patch series implements L2TPv3. It replaces the existing pppol2tp
>>> driver with a number of separate drivers, namely:-
>>>
>>> l2tp_core    - L2TP driver core. Always required.
>>> l2tp_ppp     - L2TP PPP
>>> l2tp_eth     - L2TPv3 ethernet pseudowire
>>> l2tp_ip      - L2TPv3 IP encapsulation
>>> l2tp_netlink - L2TPv3 netlink API
>> Have you thought by using the rtnl_link_ops interface instead
>> of your own netlink API?
> 
> I did, yes. I decided against it only because I didn't want to cause
> confusion with what I perhaps wrongly perceive as an API for managing
> net devices. In the L2TPv3 case, there might not be a netdev directly
> associated with a newlink API call, for example. I've no problem with
> switching the code to use it if it is preferred.

 From a quick look, it seems you're (also) managing sessions, for
which rtnl_link might not be the best choice. Could you give a
short overview of the operations you need to be able to perform?