netdev - Re: [patch net-next] virtio_net: allow to change mac when iface is running

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Date:	Thu, 28 Jun 2012 08:35:25 +0200
From:	Jiri Pirko <jpirko@...hat.com>
To:	David Miller <davem@...emloft.net>
Cc:	netdev@...r.kernel.org, rusty@...tcorp.com.au, mst@...hat.com,
	virtualization@...ts.linux-foundation.org, brouer@...hat.com
Subject: Re: [patch net-next] virtio_net: allow to change mac when iface is
 running

Thu, Jun 28, 2012 at 06:30:46AM CEST, davem@...emloft.net wrote:
>From: Jiri Pirko <jpirko@...hat.com>
>Date: Wed, 27 Jun 2012 17:27:46 +0200
>
>> Signed-off-by: Jiri Pirko <jpirko@...hat.com>
>
>Applied, but this seriously makes eth_mac_addr() completely useless.
>
>Technically, every eth_mac_addr() user in a software/virtual device
>should behave the way virtio_net does now.

I guess to. But for some HW devices eth_mac_addr() is needed (when they
does not support "life" mac change")

>
>It therefore probably makes sense to add a boolean arg which when true
>elides the netif_running() check then fixup and audit every caller.

I was thinking about this. Maybe probably __eth_mac_addr() which does
not have netif_running() check and eth_mac_addr() calling
netif_running() check and __eth_mac_addr() after that.

What do you think?

Jirka
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