Re[2]: [leo@yuriev.ru: [PATCH] ethernet-bridge: update skb->priority in case forwarded frame has VLAN-header]

[Leo Yuriev]

>>From looking at the patch:
j> ------
j> +               /*
j> +                *   We map VLAN_TCI priority (0..7) to skb->priority (0..15)
j> +                *   most similarly e.g. 0->0, 1->1, .., 7->7
j> +                */
j> +               skb->priority = (vlan_TCI >> 13) & 7;
j> ------

j> This is wrong. IEEE priorities are opposite of IETF priorities (as used by
skb->>prio).
j> Unless you install a prio qdisc and rewrite the priomap, you are screwed.
j> So you should do opposite mapping, i.e something along the lines of
j> VLAN_TCI priority (0..7) to skb->priority (15..8) i,e skb->priority = 15 - vlan_TCI;
j> cheers,
j> jamal


Jamal, you are wrong!

802.1p defines priority as "linear" from 0 to 7,
the 0 is lowest priority and 7 is highest.

couple FoC links:
http://www.linktionary.com/q/qos.html
http://www.nwfusion.com/details/475.html

-- 
С уважением,
 Leo                          mailto:leo@xxxxxxxxx

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