netdev - Re: [PATCH net-next 0/8] l2tp: rework pppol2tp ioctl handling

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Date:   Sat, 11 Aug 2018 12:19:56 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     g.nault@...halink.fr
Cc:     netdev@...r.kernel.org, jchapman@...alix.com
Subject: Re: [PATCH net-next 0/8] l2tp: rework pppol2tp ioctl handling

From: Guillaume Nault <g.nault@...halink.fr>
Date: Fri, 10 Aug 2018 13:21:54 +0200

> The current ioctl() handling code can be simplified. It tests for
> non-relevant conditions and uselessly holds sockets. Once useless
> code is removed, it becomes even simpler to let pppol2tp_ioctl() handle
> commands directly, rather than dispatch them to pppol2tp_tunnel_ioctl()
> or pppol2tp_session_ioctl(). That is the approach taken by this series.
> 
> Patch #1 and #2 define helper functions aimed at simplifying the rest
> of the patch set.
> 
> Patch #3 drops useless tests in pppol2p_ioctl() and avoid holding a
> refcount on the socket.
> 
> Patches #4, #5 and #6 are the core of the series. They let
> pppol2tp_ioctl() handle all ioctls and drop the tunnel and session
> specific functions.
> 
> Then patch #6 brings a little bit of consolidation.
> 
> Finally, patch #7 takes advantage of the simplified code to make
> pppol2tp sockets compatible with dev_ioctl(). Certainly not a killer
> feature, but it is trivial and it is always nice to see l2tp getting
> better integration with the rest of the stack.

Very nice cleanups.

Let's leave the -ENOSYS stuff there for now, changing error return
codes seems to always break something :-/

Series applied, thanks!