From: Rick Jones <rick.jones2@hp.com>
Date: Thu, 6 Nov 2014 18:37:54 +0000 (-0800)
Subject: udp: Increment UDP_MIB_IGNOREDMULTI for arriving unmatched multicasts
X-Git-Tag: omap-for-v3.19/fixes-rc1~125^2~243
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=36cbb2452cbafca64dcdd3578047433787900cf0;p=pandora-kernel.git

udp: Increment UDP_MIB_IGNOREDMULTI for arriving unmatched multicasts

As NIC multicast filtering isn't perfect, and some platforms are
quite content to spew broadcasts, we should not trigger an event
for skb:kfree_skb when we do not have a match for such an incoming
datagram.  We do though want to avoid sweeping the matter under the
rug entirely, so increment a suitable statistic.

This incorporates feedback from David L. Stevens, Karl Neiss and Eric
Dumazet.

V3 - use bool per David Miller

Signed-off-by: Rick Jones <rick.jones2@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

Reading git-diff-tree failed