netdev - Re: [PATCH net-next] net/sched: pkt_cls: change tc actions order to be as the user sets

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Message-ID: <CAJL1qvGy+sxLrspwXb+mZM_F=u3qu6AQPQ6tffGg4n6K8nMtVA@mail.gmail.com>
Date:   Tue, 27 Sep 2016 10:46:59 +0300
From:   Hadar Hen Zion <hadarh@....mellanox.co.il>
To:     Cong Wang <xiyou.wangcong@...il.com>
Cc:     Jamal Hadi Salim <jhs@...atatu.com>,
        Hadar Hen Zion <hadarh@...lanox.com>,
        "David S. Miller" <davem@...emloft.net>,
        Linux Kernel Network Developers <netdev@...r.kernel.org>,
        Or Gerlitz <ogerlitz@...lanox.com>
Subject: Re: [PATCH net-next] net/sched: pkt_cls: change tc actions order to
 be as the user sets

On Mon, Sep 26, 2016 at 11:34 PM, Cong Wang <xiyou.wangcong@...il.com> wrote:
> On Sun, Sep 25, 2016 at 11:02 PM, Hadar Hen Zion
> <hadarh@....mellanox.co.il> wrote:
>> On Mon, Sep 26, 2016 at 7:31 AM, Cong Wang <xiyou.wangcong@...il.com> wrote:
>>> On Sun, Sep 25, 2016 at 7:39 AM, Jamal Hadi Salim <jhs@...atatu.com> wrote:
>>>> On 16-09-25 10:08 AM, Hadar Hen Zion wrote:
>>>>>
>>>>> Currently the created tc actions list is reversed against the order
>>>>> set by the user.
>>>>> Change the actions list order to be the same as was set by the user.
>>>>>
>>>>
>>>>
>>>> Did something break? It seems to matter most for dumping. But even that
>>>> didnt breaking. Looking at the latest net tree, i tried:
>>>>
>>>
>>> The reason is we use action->order as an nested attribute, so
>>> the order in the list doesn't matter, only action->order itself matters.
>>
>> The order in the list matters for offload drivers who use the
>> "tcf_exts_to_list" function and action->order parameter isn't usable
>> for them.
>> Why not keeping the actions in the same order as the user? isn't it
>> more elegant?
>
> I don't object this patch since it affects offloading, I just explained
> why it doesn't affect dumping.
>
> Please add this to your changelog, to make it obvious.

Sure, I'll add it.

Hadar

>
> Thanks!