netdev - Re: [PATCH next v3 0/2] Multicast processing in IPvlan

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Date:	Tue, 05 May 2015 19:30:03 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	maheshb@...gle.com
Cc:	netdev@...r.kernel.org, edumazet@...gle.com, dcbw@...hat.com
Subject: Re: [PATCH next v3 0/2] Multicast processing in IPvlan

From: Mahesh Bandewar <maheshb@...gle.com>
Date: Mon,  4 May 2015 17:05:56 -0700

> Dan Willems pointed out that autoconf in IPvlan is broken because of the
> way broadcast bit gets set. Since broadcast processing is a real performance
> drain, the broadcast bit in multicast filter was only set when the interface
> was configured with IPv4 address. In autoconf scenario, when there are
> no addresses configured; this logic did not work and it wouldn't allow
> DHCPv4 to work. The only way was to add protocol specific hacks to avoid
> processing unnecessary broadcast burdon.
> 
> This jugglery could be avoided if these multicast / broadcast packets are taken
> out of fast-path and are processed in a work-queue. This will enable us to add
> broadcast bit in all multicast filters without any impact on performance of
> the virtual device. This patch series just does that.

Series applied, thanks.
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