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@web.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index 4a3cd2cd2f5e1c54184391efef96dfd7608e4400..96e50e0ce3ca396700cd9797b932e391338a3b32 100644 (file)
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -88,6 +88,18 @@
 #define IPV6_ADDR_SCOPE_ORGLOCAL       0x08
 #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
  */