From: Vladimir Oltean <olte...@gmail.com>
Date: Sep/15/2019, 03:00:01 (UTC+00:00)

> Instead of looking directly at skb->priority during xmit, let's get the
> netdev queue and the queue-to-traffic-class mapping, and put the
> resulting traffic class into the dsa_8021q PCP field. The switch is
> configured with a 1-to-1 PCP-to-ingress-queue-to-egress-queue mapping
> (see vlan_pmap in sja1105_main.c), so the effect is that we can inject
> into a front-panel's egress traffic class through VLAN tagging from
> Linux, completely transparently.

Wouldn't it be better to just rely on skb queue mapping as per userspace 
settings ? I mean this way you cant create some complex scenarios 
without having the VLAN ID need.

I generally use u32 filter and skbedit queue_mapping action to achieve 
this.

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Thanks,
Jose Miguel Abreu

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