RDS: Add rds_conn_path_error()

rds_conn_path_error() is the MP-aware analog of rds_conn_error,
to be used by multipath-capable callers.

Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/rds/connection.c

@@ -655,3 +655,15 @@ __rds_conn_error(struct rds_connection *conn, const char *fmt, ...)
 
 	rds_conn_drop(conn);
 }
+
+void
+__rds_conn_path_error(struct rds_conn_path *cp, const char *fmt, ...)
+{
+	va_list ap;
+
+	va_start(ap, fmt);
+	vprintk(fmt, ap);
+	va_end(ap);
+
+	rds_conn_path_drop(cp);
+}