smb3: Add dynamic trace points for RDMA (smbdirect) reconnect

     smb3_smbd_connect_done and smb3_smbd_connect_err

To improve debugging of RDMA issues add those two. We already
had dynamic tracepoints for non-RDMA connect done and error cases.
Reviewed-by: Paulo Alcantara (SUSE) <pc@manguebit.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

fs/smb/client/smbdirect.c

@@ -1401,10 +1401,13 @@ int smbd_reconnect(struct TCP_Server_Info *server)
 	server->smbd_conn = smbd_get_connection(
 		server, (struct sockaddr *) &server->dstaddr);
 
-	if (server->smbd_conn)
+	if (server->smbd_conn) {
 		cifs_dbg(VFS, "RDMA transport re-established\n");
-
-	return server->smbd_conn ? 0 : -ENOENT;
+		trace_smb3_smbd_connect_done(server->hostname, server->conn_id, &server->dstaddr);
+		return 0;
+	}
+	trace_smb3_smbd_connect_err(server->hostname, server->conn_id, &server->dstaddr);
+	return -ENOENT;
 }
 
 static void destroy_caches_and_workqueue(struct smbd_connection *info)

fs/smb/client/trace.h

@@ -935,6 +935,8 @@ DEFINE_EVENT(smb3_connect_class, smb3_##name,  \
 	TP_ARGS(hostname, conn_id, addr))
 
 DEFINE_SMB3_CONNECT_EVENT(connect_done);
+DEFINE_SMB3_CONNECT_EVENT(smbd_connect_done);
+DEFINE_SMB3_CONNECT_EVENT(smbd_connect_err);
 
 DECLARE_EVENT_CLASS(smb3_connect_err_class,
 	TP_PROTO(char *hostname, __u64 conn_id,