datapath: Avoid possibility of negative 'n_ports' in struct odp_portvec.

'n_ports' should never be negative so it's better to use an unsigned type.

Suggested-by: Jesse Gross <jesse@nicira.com>

diff --git a/include/openvswitch/datapath-protocol.h b/include/openvswitch/datapath-protocol.h
index 1c2dba9..0e8d5c9 100644 (file)
--- a/include/openvswitch/datapath-protocol.h
+++ b/include/openvswitch/datapath-protocol.h
@@ -181,7 +181,7 @@ struct odp_port {
 
 struct odp_portvec {
     struct odp_port *ports;
-    int n_ports;
+    __u32 n_ports;
 };
 
 struct odp_port_group {