netdev - Re: [PATCH V1 4/6] net/mlx4_en: Set max rate-limit for a TC

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Date:	Wed, 21 Mar 2012 15:43:11 +0200
From:	Amir Vadai <amirv@...lanox.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
CC:	"David S. Miller" <davem@...emloft.net>, <netdev@...r.kernel.org>,
	Roland Dreier <roland@...estorage.com>,
	Oren Duer <oren@...lanox.com>,
	Amir Vadai <amirv@...lanox.co.il>
Subject: Re: [PATCH V1 4/6] net/mlx4_en: Set max rate-limit for a TC

On 03/21/2012 12:12 PM, Eric Dumazet wrote:
> Le mercredi 21 mars 2012 à 11:25 +0200, Amir Vadai a écrit :
>> From: Amir Vadai<amirv@...lanox.co.il>
>>
>> Set max rate-limit using sysfs file /sys/class/net/<interface>/qos/ratelimit
>>
>> To set, enter a space separated list of values in units of 100Mbps.  For
>> example to set ratelimit of 5G to TC0 and 10G for the reset on eth2 issue:
>> echo 50 100 100 100 100 100 100 100 100>  /sys/class/net/eth2/qos/ratelimit
>>
>
> Oh thats not very user friendly.
>
> I suggest one value per file (Its probably a generic /sys rule anyway)
> and not using 100Mps for the unit, even if it is the base granularity of
> this hardware.
>
>
> /sys/class/net/eth2/qos/0/ratelimit
> ...
> /sys/class/net/eth2/qos/7/ratelimit
>
>

Ok, will change the structure to be:

/sys/class/net/eth2/qos/tc0/ratelimit
...
/sys/class/net/eth2/qos/tc7/ratelimit

And use units of 1Mbps

- Amir
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