netdev - Re: [net-next PATCH v4 0/8] Managing the forwarding database(FDB)

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Date:	Wed, 02 May 2012 16:36:44 -0700
From:	Sridhar Samudrala <sri@...ibm.com>
To:	John Fastabend <john.r.fastabend@...el.com>
CC:	"Michael S. Tsirkin" <mst@...hat.com>, shemminger@...tta.com,
	bhutchings@...arflare.com, hadi@...erus.ca,
	jeffrey.t.kirsher@...el.com, netdev@...r.kernel.org,
	gregory.v.rose@...el.com, krkumar2@...ibm.com, roprabhu@...co.com
Subject: Re: [net-next PATCH v4 0/8] Managing the forwarding database(FDB)

On 5/2/2012 2:52 PM, John Fastabend wrote:
> On 5/2/2012 8:08 AM, Michael S. Tsirkin wrote:
>> On Sun, Apr 15, 2012 at 01:06:37PM -0400, David Miller wrote:
>>> From: John Fastabend<john.r.fastabend@...el.com>
>>> Date: Sun, 15 Apr 2012 09:43:51 -0700
>>>
>>>> The following series is a submission for net-next to allow
>>>> embedded switches and other stacked devices other then the
>>>> Linux bridge to manage a forwarding database.
>>>>
>>>> Previously discussed here,
>>>>
>>>> http://lists.openwall.net/netdev/2012/03/19/26
>>>>
>>>> v4: propagate return codes correctly for ndo_dflt_Fdb_dump()
>>>>
>>>> v3: resolve the macvlan patch 8/8 to fix a dev_set_promiscuity()
>>>>      error and add the flags field to change and get link routines.
>>>>
>>>> v2: addressed feedback from Ben Hutchings resolving a typo in the
>>>>      multicast add/del routines and improving the error handling
>>>>      when both NTF_SELF and NTF_MASTER are set.
>>>>
>>>> I've tested this with 'br' tool published by Stephen Hemminger
>>>> soon to be renamed 'bridge' I believe and various traffic
>>>> generators mostly pktgen, ping, and netperf.
>>> All applied, if we need any more tweaks we can just add them
>>> on top of this work.
>>>
>>> Thanks John.
>> John, do you plan to update kvm userspace to use this interface?
>>
> No immediate plans. I would really appreciate it if you or one
> of the IBM developers working in this space took it on. Of course
> if no one steps up I guess I can eventually get at it but it will
> be sometime. For now I've been doing this manually with the bridge
> tool yet to be published.
>
>
Does this mean that when we add an interface to a bridge, it need not be 
put in promiscuous mode and
add/delete fdb entries dynamically?
Or are we talking only about VMs attached to macvtap?

Thanks
Sridhar

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