netdev - Re: [net-next v8 2/2] net: sched: support hash/classid/cpuid selecting tx queue

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Message-ID: <CAMDZJNXawPhiMYtdU_W3K5=WCj0eWKxUaoTE4NswX3NMfCSfoQ@mail.gmail.com>
Date:   Thu, 27 Jan 2022 09:23:53 +0800
From:   Tonghao Zhang <xiangxia.m.yue@...il.com>
To:     Cong Wang <xiyou.wangcong@...il.com>
Cc:     Linux Kernel Network Developers <netdev@...r.kernel.org>,
        Jamal Hadi Salim <jhs@...atatu.com>,
        Jiri Pirko <jiri@...nulli.us>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Jonathan Lemon <jonathan.lemon@...il.com>,
        Eric Dumazet <edumazet@...gle.com>,
        Alexander Lobakin <alobakin@...me>,
        Paolo Abeni <pabeni@...hat.com>,
        Talal Ahmad <talalahmad@...gle.com>,
        Kevin Hao <haokexin@...il.com>,
        Ilias Apalodimas <ilias.apalodimas@...aro.org>,
        Kees Cook <keescook@...omium.org>,
        Kumar Kartikeya Dwivedi <memxor@...il.com>,
        Antoine Tenart <atenart@...nel.org>,
        Wei Wang <weiwan@...gle.com>, Arnd Bergmann <arnd@...db.de>
Subject: Re: [net-next v8 2/2] net: sched: support hash/classid/cpuid
 selecting tx queue

On Thu, Jan 27, 2022 at 3:52 AM Cong Wang <xiyou.wangcong@...il.com> wrote:
>
> On Wed, Jan 26, 2022 at 6:32 AM <xiangxia.m.yue@...il.com> wrote:
> >
> > From: Tonghao Zhang <xiangxia.m.yue@...il.com>
> >
> > This patch allows user to select queue_mapping, range
> > from A to B. And user can use skbhash, cgroup classid
> > and cpuid to select Tx queues. Then we can load balance
> > packets from A to B queue. The range is an unsigned 16bit
> > value in decimal format.
> >
> > $ tc filter ... action skbedit queue_mapping skbhash A B
> >
> > "skbedit queue_mapping QUEUE_MAPPING" (from "man 8 tc-skbedit")
> > is enhanced with flags:
> > * SKBEDIT_F_TXQ_SKBHASH
> > * SKBEDIT_F_TXQ_CLASSID
> > * SKBEDIT_F_TXQ_CPUID
>
> NAK.
>
> Keeping resending the same non-sense can't help anything at all.
>
> You really should just use eBPF, with eBPF code you don't even need
> to send anything to upstream, you can do whatever you want without
I know ebpf can do more things. but we can let everyone to use ebpf in
tc. For them, the
tc command is more easy to use in data center. we have talked this in
another thread.
> arguing with anyone. It is a win-win. I have no idea why you don't even
> get this after wasting so much time.
>
> Thanks.



-- 
Best regards, Tonghao