From 57de0abbffa9724e2a89860a49725d805bfc07ca Mon Sep 17 00:00:00 2001
From: Jan Engelhardt <jengelh@computergmbh.de>
Date: Mon, 14 Jan 2008 23:41:50 -0800
Subject: [PATCH] [NETFILTER]: xt_pkttype: IPv6 multicast address recognition

Signed-off-by: Jan Engelhart <jengelh@computergmbh.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 net/netfilter/xt_pkttype.c | 18 +++++++++++-------
 1 file changed, 11 insertions(+), 7 deletions(-)

diff --git a/net/netfilter/xt_pkttype.c b/net/netfilter/xt_pkttype.c
index 080f3246eee7..cbcb8ea3b8d2 100644
--- a/net/netfilter/xt_pkttype.c
+++ b/net/netfilter/xt_pkttype.c
@@ -11,6 +11,7 @@
 #include <linux/if_packet.h>
 #include <linux/in.h>
 #include <linux/ip.h>
+#include <linux/ipv6.h>
 
 #include <linux/netfilter/xt_pkttype.h>
 #include <linux/netfilter/x_tables.h>
@@ -27,16 +28,19 @@ pkttype_mt(const struct sk_buff *skb, const struct net_device *in,
            const void *matchinfo, int offset, unsigned int protoff,
            bool *hotdrop)
 {
-	u_int8_t type;
 	const struct xt_pkttype_info *info = matchinfo;
+	u_int8_t type;
 
-	if (skb->pkt_type == PACKET_LOOPBACK)
-		type = match->family == AF_INET &&
-		       ipv4_is_multicast(ip_hdr(skb)->daddr)
-			? PACKET_MULTICAST
-			: PACKET_BROADCAST;
-	else
+	if (skb->pkt_type != PACKET_LOOPBACK)
 		type = skb->pkt_type;
+	else if (match->family == AF_INET &&
+	    ipv4_is_multicast(ip_hdr(skb)->daddr))
+		type = PACKET_MULTICAST;
+	else if (match->family == AF_INET6 &&
+	    ipv6_hdr(skb)->daddr.s6_addr[0] == 0xFF)
+		type = PACKET_MULTICAST;
+	else
+		type = PACKET_BROADCAST;
 
 	return (type == info->pkttype) ^ info->invert;
 }
-- 
2.30.2