From: Henning Rogge <hrogge@gmail.com>
Date: Mon, 18 May 2015 19:08:49 +0000 (+0200)
Subject: net/ipv6/udp: Fix ipv6 multicast socket filter regression
X-Git-Tag: omap-for-v4.2/wakeirq-drivers-v2^2~2^2~65^2~17
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=33b4b015e1a1ca7a8fdce40af5e71642a8ea355c;p=pandora-kernel.git

net/ipv6/udp: Fix ipv6 multicast socket filter regression

Commit <5cf3d46192fc> ("udp: Simplify__udp*_lib_mcast_deliver")
simplified the filter for incoming IPv6 multicast but removed
the check of the local socket address and the UDP destination
address.

This patch restores the filter to prevent sockets bound to a IPv6
multicast IP to receive other UDP traffic link unicast.

Signed-off-by: Henning Rogge <hrogge@gmail.com>
Fixes: 5cf3d46192fc ("udp: Simplify__udp*_lib_mcast_deliver")
Cc: "David S. Miller" <davem@davemloft.net>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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