1 files changed, 16 insertions, 0 deletions
diff --git a/pfinet/linux-src/include/net/ip.h b/pfinet/linux-src/include/net/ip.h
index 5e80fb43..1a6cb610 100644
--- a/pfinet/linux-src/include/net/ip.h
+++ b/pfinet/linux-src/include/net/ip.h
@@ -203,6 +203,22 @@ extern __inline__ void ip_eth_mc_map(u32 addr, char *buf)
 	buf[3]=addr&0x7F;
 }
 
+/*
+ *	Map a multicast IP onto multicast MAC for type Token Ring.
+ *      This conforms to RFC1469 Option 2 Multicasting i.e.
+ *      using a functional address to transmit / receive 
+ *      multicast packets.
+ */
+
+extern __inline__ void ip_tr_mc_map(u32 addr, char *buf)
+{
+	buf[0]=0xC0;
+	buf[1]=0x00;
+	buf[2]=0x00;
+	buf[3]=0x04;
+	buf[4]=0x00;
+	buf[5]=0x00;
+}
 
 extern int	ip_call_ra_chain(struct sk_buff *skb);