linux-kernel - Re: [PATCH net] net: dsa: mv88e6xxx: fix port VLAN maps

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Message-ID: <56AB81F4.6050409@elecsyscorp.com>
Date:	Fri, 29 Jan 2016 15:14:59 +0000
From:	Kevin Smith <kevin.smith@...csyscorp.com>
To:	Andrew Lunn <andrew@...n.ch>,
	Vivien Didelot <vivien.didelot@...oirfairelinux.com>
CC:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"kernel@...oirfairelinux.com" <kernel@...oirfairelinux.com>,
	"David S. Miller" <davem@...emloft.net>,
	Russell King <rmk+kernel@....linux.org.uk>
Subject: Re: [PATCH net] net: dsa: mv88e6xxx: fix port VLAN maps

On 01/28/2016 08:18 PM, Andrew Lunn wrote:
> On Thu, Jan 28, 2016 at 04:54:37PM -0500, Vivien Didelot wrote:
>> Currently the port based VLAN maps should be configured to allow every
>> port to egress frames on all other ports, except themselves.
>>
>> The debugfs interface shows that they are misconfigured. For instance, a
>> 7-port switch has the following content in the related register 0x06:
>>
>>         GLOBAL GLOBAL2 SERDES   0    1    2    3    4    5    6
>>      ...
>>      6:  1fa4    1f0f       4   7f   7e   7d   7c   7b   7a   79
>>      ...
>>
>> This means that port 3 is allowed to talk to port 2-6, but cannot talk
>> to ports 0 and 1. With this fix, port 3 can correctly talk to all ports
>> except 3 itself:
>>
>>         GLOBAL GLOBAL2 SERDES   0    1    2    3    4    5    6
>>      ...
>>      6:  1fa4    1f0f       4   7e   7d   7b   77   6f   5f   3f
>>      ...
>>
>> Fixes: ede8098d0fef ("net: dsa: mv88e6xxx: bridges do not need an FID")
>> Reported-by: Kevin Smith <kevin.smith@...csyscorp.com>
>> Signed-off-by: Vivien Didelot <vivien.didelot@...oirfairelinux.com>
> Reviewed-by: Andrew Lunn <andrew@...n.ch>
Tested-by: Kevin Smith <kevin.smith@...csyscorp.com>