netdev - Re: [RFC PATCH v0 1/2] net: bridge: propagate FDB table into hardware

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Message-ID: <1328821894.2089.3.camel@mojatatu>
Date:	Thu, 09 Feb 2012 16:11:34 -0500
From:	jamal <hadi@...erus.ca>
To:	John Fastabend <john.r.fastabend@...el.com>
Cc:	Stephen Hemminger <shemminger@...tta.com>,
	bhutchings@...arflare.com, roprabhu@...co.com,
	netdev@...r.kernel.org, mst@...hat.com, chrisw@...hat.com,
	davem@...emloft.net, gregory.v.rose@...el.com, kvm@...r.kernel.org,
	sri@...ibm.com
Subject: Re: [RFC PATCH v0 1/2] net: bridge: propagate FDB table into
 hardware

On Thu, 2012-02-09 at 09:52 -0800, John Fastabend wrote:

> >> By netlink_notifier do you mean adding a notifier_block and using atomic_notifier_call_chain()
> >> probably in rtnl_notify()? Then drivers could register with the notifier chain with
> >> atomic_notifier_chain_register() and receive the events correctly. Or did I miss
> >> some notifier chain that already exists?
> > 
> > Yes. that is what I mean. The callbacks you need may or may not already be present.

I'll go one step further.
This stuff shouldnt be in the kernel at all. 
The disadvantage is you need a user space app to update the hardware.
i.e, the same mechanism should be usable for either a switch embedded
in a NIC or a standalone hardware switch (with/out the s/ware bridge 
presence)

cheers,
jamal

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