[ovs-discuss] 转发: Re: Extra config through tc/netfilter needed for TOS?

[Ben Pfaff]

It sounds like you're already comfortable doing all of this with tc.
If so, I'm not sure of the advantage of doing it another way.

On Wed, Nov 07, 2012 at 01:58:31AM +0800, Robin Wang wrote:
> Sorry for missing the mail list. Add it in loop. Thanks.
> 
> Best,
> Robin
> 
> 发件人： Robin Wang
> 发送时间： 2012-11-07 01:57
> 收件人： Ben Pfaff
> 主题： Re: Re: [ovs-discuss] Extra config through tc/netfilter needed for TOS?
> Thanks for your response, Ben!
> 
> Yeah, I tried configuring qdisc through ovs-vsctl by manipulating Qos/Queue. It works fine on OVS supported qdisc HTB/HFSC.
> 
> For TOS thing I've mentioned in previous mail, one convenient way is to use u32 selector in tc filter, or use netfilter to get packets go into certain queue. I think that should work fine, too. But the disadvantage is that , this part of configuration is not tracked by OVSDB. Seen from management plane, there're two separate operations to achieve this goal through different management interfaces.
> 
> So I wonder it there's a better method, a consolidated one. You mentioned that writing OF rules may help. Would you like to give me some hints on how to achieve that? Thanks very much.
> 
> Best,
> Robin
> 
> 
> From: Ben Pfaff
> Date: 2012-11-07 01:44
> To: Robin Wang
> CC: 
> Subject: Re: [ovs-discuss] Extra config through tc/netfilter needed for TOS?
> On Mon, Nov 05, 2012 at 11:51:37PM +0800, Robin Wang wrote:
> > Since OVS QoS is based on linux policing and qdisc, to achieve QoS per Type
> > of Service, say 100Mbps for web server(port 80), 10M for SMTP(port 25), is
> > it achievable just through OVS configuration? or I still need to do extra
> > config through tc filter/netfilter?
> 
> You should be able to achieve the qdisc configuration through OVS
> configuration of the QoS and Queue tables.
> 
> I'm not sure whether you can tie TOS to queue without writing OpenFlow
> rules.