1 files changed, 13 insertions, 0 deletions

diff --git a/include/linux/sunrpc/msg_prot.h b/include/linux/sunrpc/msg_prot.h
index 784d4c3ef651..c4beb5775111 100644
--- a/include/linux/sunrpc/msg_prot.h
+++ b/include/linux/sunrpc/msg_prot.h
@@ -138,6 +138,19 @@ typedef __be32	rpc_fraghdr;
 #define RPC_MAX_HEADER_WITH_AUTH \
         (RPC_CALLHDRSIZE + 2*(2+RPC_MAX_AUTH_SIZE/4))
 
+/*
+ * RFC1833/RFC3530 rpcbind (v3+) well-known netid's.
+ */
+#define RPCBIND_NETID_UDP       "udp"
+#define RPCBIND_NETID_TCP       "tcp"
+#define RPCBIND_NETID_UDP6      "udp6"
+#define RPCBIND_NETID_TCP6      "tcp6"
+
+/*
+ * Note that RFC 1833 does not put any size restrictions on the
+ * netid string, but all currently defined netid's fit in 4 bytes.
+ */
+#define RPCBIND_MAXNETIDLEN     (4u)
 
 #endif /* __KERNEL__ */
 #endif /* _LINUX_SUNRPC_MSGPROT_H_ */