netdev - [PATCH 4/5] ipv6: Add IPv6 multicast address flag defines

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Date:	Wed, 16 Feb 2011 00:19:20 +0100
From:	Linus Lüssing <linus.luessing@....de>
To:	Stephen Hemminger <shemminger@...ux-foundation.org>,
	"David S. Miller" <davem@...emloft.net>,
	bridge@...ts.linux-foundation.org
Cc:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	Herbert Xu <herbert@...dor.apana.org.au>,
	Linus Lüssing <linus.luessing@....de>
Subject: [PATCH 4/5] ipv6: Add IPv6 multicast address flag defines

This commit adds the missing IPv6 multicast address flag defines to
complement the already existing multicast address scope defines and to
be able to check these flags nicely in the future.

Signed-off-by: Linus Lüssing <linus.luessing@....de>
---
 include/net/ipv6.h |   12 ++++++++++++
 1 files changed, 12 insertions(+), 0 deletions(-)

diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index 4a3cd2c..96e50e0 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -89,6 +89,18 @@
 #define IPV6_ADDR_SCOPE_GLOBAL		0x0e
 
 /*
+ *	Addr flags
+ */
+#ifdef __KERNEL__
+#define IPV6_ADDR_MC_FLAG_TRANSIENT(a)	\
+	((a)->s6_addr[1] & 0x10)
+#define IPV6_ADDR_MC_FLAG_PREFIX(a)	\
+	((a)->s6_addr[1] & 0x20)
+#define IPV6_ADDR_MC_FLAG_RENDEZVOUS(a)	\
+	((a)->s6_addr[1] & 0x40)
+#endif
+
+/*
  *	fragmentation header
  */
 
-- 
1.7.2.3

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