netdev - Re: Using HTB over MultiQ

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Date:	Thu, 07 Nov 2013 07:06:54 -0800
From:	John Fastabend <john.r.fastabend@...el.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
CC:	Anton 'EvilMan' Danilov <littlesmilingcloud@...il.com>,
	netdev@...r.kernel.org
Subject: Re: Using HTB over MultiQ

On 11/7/2013 6:54 AM, Eric Dumazet wrote:
> On Thu, 2013-11-07 at 06:39 -0800, John Fastabend wrote:
>
>>
>> With the multiq qdisc you could attach filter to the root qdisc and use
>> skbedit to set the queue_mapping field,
>>
>> #tc filter add dev eth0 parent 1: protocol ip prio 1 u32 \
>> 	match ip dst 192.168.0.3 \
>> 	action skbedit queue_mapping 3
>>
>
> Oh right, this is the way ;)
>
> I wonder if we can have 'action skbedit rxhash 34' ?
>

Sure, it should easy enough.

>
>> if you configure the filters to map to the correct classes this would
>> work.
>>
>> Or another way would be use mqprio and steer packets to HTB classes
>> using the skb->priority. The priority can be set by iptables/nftables
>> or an ingress filter.
>
> Yes, but this might duplicate the 'customer' tree Anton has to put on
> the filters anyway ?
>

hmm not sure I understand. As long as customer flows are mapped to the
correct HTB qdisc via skb priority with the correct htb child classes
what would be duplicated?
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