netdev - Re: [PATCH net-next 0/2] extend sch_mqprio to distribute traffic not only by ETS TC

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Message-ID: <4FB287FA.2060507@intel.com>
Date:	Tue, 15 May 2012 09:44:42 -0700
From:	John Fastabend <john.r.fastabend@...el.com>
To:	Amir Vadai <amirv@...lanox.com>
CC:	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
	Oren Duer <oren@...lanox.com>,
	Liran Liss <liranl@...lanox.com>,
	Jamal Hadi Salim <jhs@...atatu.com>,
	Diego Crupnicoff <Diego@...lanox.com>,
	Or Gerlitz <ogerlitz@...lanox.com>
Subject: Re: [PATCH net-next 0/2] extend sch_mqprio to distribute traffic
 not only by ETS TC

On 5/14/2012 12:24 PM, Amir Vadai wrote:
>>>> On 5/6/2012 12:05 AM, Amir Vadai wrote:
>>>>> This series comes to revive the discussion initiated on the thread "net:
>>>>> support tx_ring per UP in HW based QoS mechanism" (see
>>>>> http://marc.info/?t=133165957200004&r=1&w=2) with the major issue to be address
>>>>> is - how should sk_prio<=>    TC be done, for both, tagged and untagged traffic.
>>>>> Following is a staged description addressing the background, problem
>>>>> description, current situation, suggestion for the change and implementation of
>>>>> it.

[...]

> John Hi,
> 
> After some internal discussions, it was agreed to line up with your
> approach, to leave mqprio an abstract skb->priority <=> queue set
> mapping and to ignore egress_map if mqprio is enabled.
> 

OK sounds good.

> It would be very nice, if the term 'tc' in kernel code would be
> replaced to queue set, since it is very misleading.
> 

Go ahead and write up a patch. Just be careful not to break existing
user visible API. I agree it is confusing.

> There still might be some small issues with skb_tx_hash for tagged
> traffic, which I will work on tomorrow, and hopefully will send a new
> patch set with the solution.
> 

What are the issues? Lets see a patch.

Thanks,
John
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