netdev - Re: The bonding driver should notify userspace of MAC address change

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Date:	Fri, 15 Apr 2011 12:22:48 -0700
From:	Jay Vosburgh <fubar@...ibm.com>
To:	Phil Oester <kernel@...uxace.com>
cc:	=?UTF-8?B?Tmljb2xhcyBkZSBQZXNsb8O8YW4=?= 
	<nicolas.2p.debian@...il.com>,
	=?UTF-8?B?TWljaGHFgiBHw7Nybnk=?= 
	<mgorny@...too.org>, netdev@...r.kernel.org, roy@...ples.name,
	Andy Gospodarek <andy@...yhouse.net>
Subject: Re: The bonding driver should notify userspace of MAC address change

Phil Oester <kernel@...uxace.com> wrote:

>On Fri, Apr 15, 2011 at 11:53:10AM -0700, Jay Vosburgh wrote:
>> >A bonding device should not report link up to userspace until at least one slave is present and up.
>> >
>> >And possibly, a bonding device should report link down if all slaves are down or all slave were removed.
>> >
>> >Jay, Andy, does this sounds sensible to you?
>> 
>> 	I was just reading their bug and doing an experiment; I don't
>> see that bonding reports carrier up until there's at least one slave
>> (even if it's configured up), e.g.,
>> 
>
>This was only recently fixed - see e826eafa65c6f1f7c8db5a237556cebac57ebcc5
>(bonding: Call netif_carrier_off after register_netdevice). Perhaps the
>reporter is not using a recent kernel?

	Yah, I looked that up after I'd sent my prior email.  Since that
change went in only a month ago, maybe they don't have it.

	On the other hand, I did my test on a FC 14 kernel,
2.6.35.6-45.fc14, which claims to have been built in October 2010, and
it seemed to behave properly.

	-J

---
	-Jay Vosburgh, IBM Linux Technology Center, fubar@...ibm.com
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