linux-kernel - Re: [PATCH net-next v3 10/12] net: dsa: support switchdev ageing time attr

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Message-ID: <ec4db799-a764-d029-80fb-9a56338f7bc5@gmail.com>
Date:	Mon, 18 Jul 2016 21:26:00 -0700
From:	Florian Fainelli <f.fainelli@...il.com>
To:	Andrew Lunn <andrew@...n.ch>,
	Vivien Didelot <vivien.didelot@...oirfairelinux.com>
Cc:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	kernel@...oirfairelinux.com,
	"David S. Miller" <davem@...emloft.net>
Subject: Re: [PATCH net-next v3 10/12] net: dsa: support switchdev ageing time
 attr

Le 18/07/2016 à 20:24, Andrew Lunn a écrit :
> On Mon, Jul 18, 2016 at 08:45:38PM -0400, Vivien Didelot wrote:
>> Add a new function for DSA drivers to handle the switchdev
>> SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME attribute.
>>
>> The ageing time is passed as milliseconds.
>>
>> Also because we can have multiple logical bridges on top of a physical
>> switch and ageing time are switch-wide, call the driver function with
>> the fastest ageing time in use on the chip instead of the requested one.
>>
>> Signed-off-by: Vivien Didelot <vivien.didelot@...oirfairelinux.com>
>> ---
>>  include/net/dsa.h |  2 ++
>>  net/dsa/slave.c   | 41 +++++++++++++++++++++++++++++++++++++++++
> 

Hi Andrew,

> Hi Florian
> 
> It looks like the SF2 can do fast ageing per port. What i don't see if
> what configuration options you have. Can you get the fast and the
> normal age time per port? Or is it global?

The normal ageing is global and the value needs to be programmed in
seconds, can can range from 10 to 1,048,575 (encoded on 20 bits). The
fast-ageing can actually be per-port, per-VLAN id, for just dynamic or
static entries etc. and is just a poor name for a flush based on any of
these criteria.
-- 
Florian