netdev - Re: [Patch net-next] net_sched: act: use tcf_hash_release() in net/sched/act

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Date:	Thu, 16 Jan 2014 08:25:57 -0500
From:	Jamal Hadi Salim <jhs@...atatu.com>
To:	Cong Wang <xiyou.wangcong@...il.com>, netdev@...r.kernel.org
CC:	"David S. Miller" <davem@...emloft.net>
Subject: Re: [Patch net-next] net_sched: act: use tcf_hash_release() in net/sched/act_police.c

On 01/15/14 18:23, Cong Wang wrote:
> Cc: Jamal Hadi Salim <jhs@...atatu.com>
> Cc: David S. Miller <davem@...emloft.net>
> Signed-off-by: Cong Wang <xiyou.wangcong@...il.com>

Acked-by: Jamal Hadi Salim <jhs@...atatu.com>

cheers,
jamal

> ---
>   net/sched/act_police.c | 30 +++---------------------------
>   1 file changed, 3 insertions(+), 27 deletions(-)
>
> diff --git a/net/sched/act_police.c b/net/sched/act_police.c
> index a719fdf..5ba467b 100644
> --- a/net/sched/act_police.c
> +++ b/net/sched/act_police.c
> @@ -104,20 +104,6 @@ nla_put_failure:
>   	goto done;
>   }
>
> -static void tcf_police_destroy(struct tcf_police *p)
> -{
> -	spin_lock_bh(&police_hash_info.lock);
> -	hlist_del(&p->tcf_head);
> -	spin_unlock_bh(&police_hash_info.lock);
> -	gen_kill_estimator(&p->tcf_bstats,
> -			   &p->tcf_rate_est);
> -	/*
> -	 * gen_estimator est_timer() might access p->tcf_lock
> -	 * or bstats, wait a RCU grace period before freeing p
> -	 */
> -	kfree_rcu(p, tcf_rcu);
> -}
> -
>   static const struct nla_policy police_policy[TCA_POLICE_MAX + 1] = {
>   	[TCA_POLICE_RATE]	= { .len = TC_RTAB_SIZE },
>   	[TCA_POLICE_PEAKRATE]	= { .len = TC_RTAB_SIZE },
> @@ -272,19 +258,9 @@ failure:
>   static int tcf_act_police_cleanup(struct tc_action *a, int bind)
>   {
>   	struct tcf_police *p = a->priv;
> -	int ret = 0;
> -
> -	if (p != NULL) {
> -		if (bind)
> -			p->tcf_bindcnt--;
> -
> -		p->tcf_refcnt--;
> -		if (p->tcf_refcnt <= 0 && !p->tcf_bindcnt) {
> -			tcf_police_destroy(p);
> -			ret = 1;
> -		}
> -	}
> -	return ret;
> +	if (p)
> +		return tcf_hash_release(&p->common, bind, &police_hash_info);
> +	return 0;
>   }
>
>   static int tcf_act_police(struct sk_buff *skb, const struct tc_action *a,
>

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