[VLAN] 802.1p queuing

[Ben Greear]

Stephen Weyland wrote:
> Hi
> 
> I am new to the list and I apologize if this question has been asked 
> before but I cannot seem to find a search method for the archives. I 
> would be happy for some enlightenment there.
> 
> Overview of what I am trying to do:
> - I am setting up 3 vlans on an 802.1q trunk from a switch into a router 
> that runs CentOS 4.3.
> - I am a little confused as to how and if 802.1p priority is set from 
> the Linux side.
> - I would like to set one of the vlans on the router to have priority 
> above the others. It is a voice vlan. I can do this for outbound traffic 
> from the switch but for outbound from the router I'm not sure.
> - I am wondering if I have to do anything to add 802.1p bits to a given 
> vlan or is there a certain amount of priority queuing/mapping that takes 
> place out of the box with the presence of IP ToS bits?

vconfig can map 802.1q priorities to/from skb->priority.  You can set 
the skb priority when opening a socket, or by using the traffic-control 
and net-filter features in Linux.

Thanks,
Ben

> 
> Thanks
> Stephen
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-- 
Ben Greear <greearb at candelatech.com>
Candela Technologies Inc  http://www.candelatech.com