From: Christoph Lameter <cl@linux.com>
Date: Fri, 27 Aug 2010 13:29:38 +0000 (-0500)
Subject: IPoIB: Set pkt_type correctly for multicast packets (fix IGMP breakage)
X-Git-Tag: v2.6.37-rc1~95^2^7~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fed1db33fe85573487a4732d628ac5afdb5dc776;p=pandora-kernel.git

IPoIB: Set pkt_type correctly for multicast packets (fix IGMP breakage)

IGMP processing is broken because the IPOIB does not set the
skb->pkt_type the right way for multicast traffic.  All incoming
packets are set to PACKET_HOST which means that igmp_recv() will
ignore the IGMP broadcasts/multicasts.

This in turn means that the IGMP timers are firing and are sending
information about multicast subscriptions unnecessarily.  In a large
private network this can cause traffic spikes.

Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
---

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