netdev - Re: [PATCH RFC, iproute2] tc/mqprio: Add support to configure bandwidth rate limit through mqprio

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Message-ID: <20170718172935.6426dc6c@xeon-e3>
Date:   Tue, 18 Jul 2017 17:29:35 -0700
From:   Stephen Hemminger <stephen@...workplumber.org>
To:     Amritha Nambiar <amritha.nambiar@...el.com>
Cc:     netdev@...r.kernel.org, alexander.h.duyck@...el.com,
        kiran.patil@...el.com, sridhar.samudrala@...el.com,
        mitch.a.williams@...el.com, alexander.duyck@...il.com,
        neerav.parikh@...el.com, carolyn.wyborny@...el.com,
        jeffrey.t.kirsher@...el.com
Subject: Re: [PATCH RFC, iproute2] tc/mqprio: Add support to configure
 bandwidth rate limit through mqprio

On Fri, 14 Jul 2017 18:26:13 -0700
Amritha Nambiar <amritha.nambiar@...el.com> wrote:

> Support bandwidth rate limit information for a traffic
> class in addition to the number of TCs and associated
> queue configuration data. This is supported in the new
> hardware offload mode in mqprio by setting the value of
> 'hw' option to 2. This new hardware offload mode in mqprio
> makes full use of the mqprio options, the TCs, the
> queue configurations and the bandwidth rates for the TCs.
> 
> # tc qdisc add dev eth0 root mqprio num_tc 2  map 0 0 0 0 1 1 1 1\
>   queues 4@0 4@4 min_rate 0Mbit 0Mbit max_rate 55Mbit 60Mbit hw 2
> 
> # tc qdisc show dev eth0
> 
> qdisc mqprio 804a: root  tc 2 map 0 0 0 0 1 1 1 1 0 0 0 0 0 0 0 0
>              queues:(0:3) (4:7)
>              min rates:0bit 0bit
>              max rates:55Mbit 60Mbit
> 
> Signed-off-by: Amritha Nambiar <amritha.nambiar@...el.com>

As Jamal said, the syntax is awquard.
Also, for iproute2 commands the output format should match the input format