From: Johannes Berg <johannes@xxxxxxxxxxxxxxxx>
Date: Mon, 16 Oct 2017 16:57:49 +0200
> From: Johannes Berg <johannes.berg@xxxxxxxxx>
>
> When netlink_ack() reports an allocation error to the sending
> socket, there's no need to look up the sending socket since
> it's available in the SKB's CB. Use that instead of going to
> the trouble of looking it up.
>
> Note that the pointer is only available since Eric Biederman's
> commit 3fbc290540a1 ("netlink: Make the sending netlink socket availabe in NETLINK_CB")
> which is far newer than the original lookup code (Oct 2003)
> (though the field was called 'ssk' in that commit and only got
> renamed to 'sk' later, I'd actually argue 'ssk' was better - or
> perhaps it should've been 'source_sk' - since there are so many
> different 'sk's involved.)
>
> Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Applied to net-next.
