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Date:   Mon, 18 Feb 2019 21:26:57 -0800
From:   Cong Wang <xiyou.wangcong@...il.com>
To:     Vlad Buslov <vladbu@...lanox.com>
Cc:     Ido Schimmel <idosch@...sch.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "jhs@...atatu.com" <jhs@...atatu.com>,
        "jiri@...nulli.us" <jiri@...nulli.us>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "ast@...nel.org" <ast@...nel.org>,
        "daniel@...earbox.net" <daniel@...earbox.net>
Subject: Re: [PATCH net-next v4 07/17] net: sched: protect filter_chain list
 with filter_chain_lock mutex

On Fri, Feb 15, 2019 at 7:35 AM Vlad Buslov <vladbu@...lanox.com> wrote:
>
> Another problem that I found in cls_fw and cls_route is that they set
> arg->stop when empty. Both of them have code unchanged since it was
> committed initially in 2005 so I assume this convention is no longer
> relevant because all other classifiers don't do that (they only set
> arg->stop when arg->fn returns negative value).
>

The question is why do you want to use arg->stop==0 as
an indication for emptiness? Isn't what arg->count==0
supposed to be?

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