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skb->priority usage in wireless frame classification

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[Adding netdev]

Maybe someone from the netdev people can shed some light on this.
We've got the following code in net/wireless/util.c for frame classification
(cfg80211_classify8021d):

/* skb->priority values from 256->263 are magic values to
* directly indicate a specific 802.1d priority.  This is used
* to allow 802.1d priority to be passed directly in from VLAN
* tags, etc.
*/
if (skb->priority >= 256 && skb->priority <= 263)
                 return skb->priority - 256;

I was just thinking about making use of this for some internal mac80211
QoS handling. But is this code still valid? At least I haven't found anything
in the 802.1q code :(

Thanks,
Helmut
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