X-Git-Url: http://pileus.org/git/?a=blobdiff_plain;f=include%2Fnet%2Fipv6.h;h=8b05c65415cb3c9bd02289294e7e601a46cc74f1;hb=fd80eb942ad9761f241c9b287b3b9a342b20690d;hp=c0c019f72ba95a1896cdf7c77c1312491318210b;hpb=acf63867ae06ef95eea7bf445ded2f05528a81b1;p=~andy%2Flinux

diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index c0c019f72ba..8b05c65415c 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -383,6 +383,16 @@ static inline int ipv6_addr_v4mapped(const struct in6_addr *a)
 		 a->s6_addr32[2] == htonl(0x0000ffff));
 }
 
+/*
+ * Check for a RFC 4843 ORCHID address
+ * (Overlay Routable Cryptographic Hash Identifiers)
+ */
+static inline int ipv6_addr_orchid(const struct in6_addr *a)
+{
+	return ((a->s6_addr32[0] & htonl(0xfffffff0))
+		== htonl(0x20010010));
+}
+
 /*
  * find the first different bit between two addresses
  * length of address must be a multiple of 32bits