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Re: WMM classification guideline for applications?

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On Fri, 2009-12-04 at 11:08 -0500, David Acker wrote:

> I am not an expert on how the kernel handles vlans, but it appears that 
> the priority field's value is set by the user space VLAN creation tools 
> through an ioctl with SET_VLAN_EGRESS_PRIORITY_CMD which calls 
> vlan_dev_set_egress_priority to map an skb priority to a vlan priority.
> vlan_dev_hard_header then uses this information to populate the vlan 
> priority field based on the skb priority field.
> 
> In this case it would seem that skb priority and the vlan priority are 
> both set and there may be a non-trivial mapping between the two. 

But doesn't that also mean that mac80211 can happily ignore the VLAN
priority in the packet, because the vlan code will have propagated it to
the skb->priority, if the administrator wishes to use it?

johannes

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