netdev - Re: [PATCH net-next 2/3] net: dsa: mv88e6xxx: fix duplicate vlan warning

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Message-ID: <20200218163114.GI25745@shell.armlinux.org.uk>
Date:   Tue, 18 Feb 2020 16:31:14 +0000
From:   Russell King - ARM Linux admin <linux@...linux.org.uk>
To:     Andrew Lunn <andrew@...n.ch>
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Ido Schimmel <idosch@...sch.org>,
        "David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org
Subject: Re: [PATCH net-next 2/3] net: dsa: mv88e6xxx: fix duplicate vlan
 warning

On Tue, Feb 18, 2020 at 05:27:50PM +0100, Andrew Lunn wrote:
> On Tue, Feb 18, 2020 at 11:51:57AM +0000, Russell King - ARM Linux admin wrote:
> > On Tue, Feb 18, 2020 at 11:46:14AM +0000, Russell King wrote:
> > > When setting VLANs on DSA switches, the VLAN is added to both the port
> > > concerned as well as the CPU port by dsa_slave_vlan_add().  If multiple
> > > ports are configured with the same VLAN ID, this triggers a warning on
> > > the CPU port.
> > > 
> > > Avoid this warning for CPU ports.
> > > 
> > > Reviewed-by: Florian Fainelli <f.fainelli@...il.com>
> > > Signed-off-by: Russell King <rmk+kernel@...linux.org.uk>
> > 
> > Note that there is still something not right.  On the ZII dev rev B,
> > setting up a bridge across all the switch ports, I get:
> 
> Hi Russell
> 
> FYI: You need to be a little careful with VLANs on rev B. The third
> switch does not have the PVT hardware. So VLANs are going to 'leak'
> when they cross the DSA link to that switch.

However, I'm not using VLAN configuration on any of the ZII boards.
As I stated, I'm just setting up a bridge.  It isn't even vlan
aware:

iface br0 inet manual
	bridge-ports lan0 lan1 lan2 lan3 lan4 lan5 lan6 lan7 lan8
	bridge-maxwait 0

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
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