SUNRPC: export per-transport rpcbind netid's

The rpcbind (v3+) netid is provided by each RPC client transport. This fixes
an omission in IPv6 rpcbind client support, and enables future extension.

Signed-off-by: Tom Talpey <tmt@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index 7a154e4..5bdce8f 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -337,6 +337,10 @@
 				ntohs(addr->sin_port) & 0xff);
 	}
 	xprt->address_strings[RPC_DISPLAY_UNIVERSAL_ADDR] = buf;
+
+	xprt->address_strings[RPC_DISPLAY_NETID] =
+		kstrdup(xprt->prot == IPPROTO_UDP ?
+			RPCBIND_NETID_UDP : RPCBIND_NETID_TCP, GFP_KERNEL);
 }
 
 static void xs_format_ipv6_peer_addresses(struct rpc_xprt *xprt)
@@ -398,6 +402,10 @@
 				ntohs(addr->sin6_port) & 0xff);
 	}
 	xprt->address_strings[RPC_DISPLAY_UNIVERSAL_ADDR] = buf;
+
+	xprt->address_strings[RPC_DISPLAY_NETID] =
+		kstrdup(xprt->prot == IPPROTO_UDP ?
+			RPCBIND_NETID_UDP6 : RPCBIND_NETID_TCP6, GFP_KERNEL);
 }
 
 static void xs_free_peer_addresses(struct rpc_xprt *xprt)