ipv6: Introduce ipv6_addr_is_solict_mult() to check Solicited Node Multicast Addresses.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 8 insertions, 0 deletions

diff --git a/include/net/addrconf.h b/include/net/addrconf.h
index c6a44213fc74..3a3eeb407f4b 100644
--- a/include/net/addrconf.h
+++ b/include/net/addrconf.h
@@ -305,6 +305,14 @@ static inline bool ipv6_addr_is_isatap(const struct in6_addr *addr)
         return (addr->s6_addr32[2] | htonl(0x02000000)) == htonl(0x02005EFE);
 }
 
+static inline bool ipv6_addr_is_solict_mult(const struct in6_addr *addr)
+{
+        return (addr->s6_addr32[0] == htonl(0xff020000) &&
+                addr->s6_addr32[1] == htonl(0x00000000) &&
+                addr->s6_addr32[2] == htonl(0x00000001) &&
+                addr->s6_addr[12] == 0xff);
+}
+
 #ifdef CONFIG_PROC_FS
 extern int if6_proc_init(void);
 extern void if6_proc_exit(void);