netdev - Re: [patch net-next v3 5/9] genetlink: implement release callback and free sk_user

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Message-ID: <20231122115055.0731c225@kernel.org>
Date: Wed, 22 Nov 2023 11:50:55 -0800
From: Jakub Kicinski <kuba@...nel.org>
To: Jiri Pirko <jiri@...nulli.us>
Cc: netdev@...r.kernel.org, pabeni@...hat.com, davem@...emloft.net,
 edumazet@...gle.com, jacob.e.keller@...el.com, jhs@...atatu.com,
 johannes@...solutions.net, andriy.shevchenko@...ux.intel.com,
 amritha.nambiar@...el.com, sdf@...gle.com, horms@...nel.org
Subject: Re: [patch net-next v3 5/9] genetlink: implement release callback
 and free sk_user_data there

On Wed, 22 Nov 2023 19:20:58 +0100 Jiri Pirko wrote:
> >I'm pretty sure I complained when it was being added. Long story.
> >AFAIU user as in if the socket is opened by a kernel module, the kernel
> >module is the user. There's no need to use this field for the
> >implementation since the implementation can simply extend its 
> >own structure to add a properly typed field.  
> 
> Okay, excuse me, as always I'm slow here. What structure are
> you refering to?

struct netlink_sock. Technically it may be a little cleaner to wrap 
that in another struct that will be genetlink specific. But that's
a larger surgery for relatively little benefit at this stage.