netdev - Re: [PATCH net-next] net/sched: act_tunnel_key: Remove rcu_read

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Message-ID: <57D6B710.1080001@gmail.com>
Date:   Mon, 12 Sep 2016 07:09:20 -0700
From:   John Fastabend <john.fastabend@...il.com>
To:     Hadar Hen Zion <hadarh@...lanox.com>,
        "David S. Miller" <davem@...emloft.net>
Cc:     netdev@...r.kernel.org, Jiri Pirko <jiri@...lanox.com>,
        Jiri Benc <jbenc@...hat.com>,
        Jamal Hadi Salim <jhs@...atatu.com>,
        Shmulik Ladkani <shmulik.ladkani@...il.com>,
        Tom Herbert <tom@...bertland.com>,
        Eric Dumazet <edumazet@...gle.com>,
        Cong Wang <xiyou.wangcong@...il.com>,
        Amir Vadai <amirva@...lanox.com>,
        Or Gerlitz <ogerlitz@...lanox.com>
Subject: Re: [PATCH net-next] net/sched: act_tunnel_key: Remove rcu_read_lock
 protection

On 16-09-12 05:19 AM, Hadar Hen Zion wrote:
> Remove rcu_read_lock protection from tunnel_key_dump and use
> rtnl_dereference, dump operation is protected by  rtnl lock.
> 
> Also, remove rcu_read_lock from tunnel_key_release and use
> rcu_dereference_protected.
> 
> Both operations are running exclusively and a writer couldn't modify
> t->params while those functions are executed.
> 
> Fixes: 54d94fd89d90 ('net/sched: Introduce act_tunnel_key')
> Signed-off-by: Hadar Hen Zion <hadarh@...lanox.com>
> ---

Thanks for cleaning this up.

Acked-by: John Fastabend <john.r.fastabend@...el.com>