linux-kernel - Re: [PATCH net-next] net: dsa: tag_ocelot: use traffic class to map priority on injected header

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Message-ID: <20211222142337.0325219b@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com>
Date:   Wed, 22 Dec 2021 14:23:37 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Xiaoliang Yang <xiaoliang.yang_1@....com>
Cc:     davem@...emloft.net, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, UNGLinuxDriver@...rochip.com,
        vladimir.oltean@....com, claudiu.manoil@....com,
        alexandre.belloni@...tlin.com, f.fainelli@...il.com,
        andrew@...n.ch, vivien.didelot@...il.com, marouen.ghodhbane@....com
Subject: Re: [PATCH net-next] net: dsa: tag_ocelot: use traffic class to map
 priority on injected header

On Tue, 21 Dec 2021 19:02:09 +0800 Xiaoliang Yang wrote:
> For Ocelot switches, the CPU injected frames have an injection header
> where it can specify the QoS class of the packet and the DSA tag, now it
> uses the SKB priority to set that. If a traffic class to priority
> mapping is configured on the netdevice (with mqprio for example ...), it
> won't be considered for CPU injected headers. This patch make the QoS
> class aligned to the priority to traffic class mapping if it exists.
> 
> Signed-off-by: Xiaoliang Yang <xiaoliang.yang_1@....com>
> Signed-off-by: Marouen Ghodhbane <marouen.ghodhbane@....com>

Is this a fix? Looks like one.