1 files changed, 5 insertions, 2 deletions

diff --git a/include/net/protocol.h b/include/net/protocol.h
index 875f4895b033..a1b1b530c338 100644
--- a/include/net/protocol.h
+++ b/include/net/protocol.h
@@ -29,8 +29,11 @@
 #include <linux/ipv6.h>
 #endif
 
-#define MAX_INET_PROTOS 256             /* Must be a power of 2         */
-
+/* This is one larger than the largest protocol value that can be
+ * found in an ipv4 or ipv6 header.  Since in both cases the protocol
+ * value is presented in a __u8, this is defined to be 256.
+ */
+#define MAX_INET_PROTOS         256
 
 /* This is used to register protocols. */
 struct net_protocol {