netdev - Re: [PATCH 3/6 net-next] inet: kill smallest_size and smallest

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Date:   Thu, 22 Dec 2016 14:41:51 -0800
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     Josef Bacik <jbacik@...com>
Cc:     davem@...emloft.net, hannes@...essinduktion.org,
        kraigatgoog@...il.com, tom@...bertland.com, netdev@...r.kernel.org,
        kernel-team@...com
Subject: Re: [PATCH 3/6 net-next] inet: kill smallest_size and smallest_port

On Thu, 2016-12-22 at 16:26 -0500, Josef Bacik wrote:
> In inet_csk_get_port we seem to be using smallest_port to figure out where the
> best place to look for a SO_REUSEPORT sk that matches with an existing set of
> SO_REUSEPORT's.  However if we get to the logic
> 
> if (smallest_size != -1) {
> 	port = smallest_port;
> 	goto have_port;
> }
> 
> we will do a useless search, because we would have already done the
> inet_csk_bind_conflict for that port and it would have returned 1, otherwise we
> would have gone to found_tb and succeeded.  Since this logic makes us do yet
> another trip through inet_csk_bind_conflict for a port we know won't work just
> delete this code and save us the time.
> 
> Signed-off-by: Josef Bacik <jbacik@...com>

Please remove tb->need_owners ;)