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From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH 2/2] macvlan: Move broadcasts into a work queue
Date: Thu, 10 Apr 2014 21:40:23 -0400 (EDT)
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From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Wed, 9 Apr 2014 01:23:49 +0800

> On Tue, Apr 08, 2014 at 09:48:40AM -0700, Ben Greear wrote:
>> 
>> At least for ARPs, maybe we could inspect the packet and only
>> deliver to interfaces configured with the MAC that is being
>> ARPed for (or ones that are in promisc)?
> 
> Yes this would definitely be a great optimisation.

Yes and you can use the direct rather than the workqueue path.