secchan: Add clarifying comment.

diff --git a/secchan/ofproto.c b/secchan/ofproto.c
index 962b59d4c8f07020f454d50daeadc25ee2c67b37..9498e12d14271c0a88f2bdf15632cbf14555b265 100644 (file)
--- a/secchan/ofproto.c
+++ b/secchan/ofproto.c
@@ -150,7 +150,8 @@ struct ofproto {
     /* Datapath. */
     struct dpif dpif;
     struct dpifmon *dpifmon;
-    struct port_array ports;
+    struct port_array ports;    /* Index is ODP port nr; ofport->opp.port_no is
+                                 * OFP port nr. */
     struct shash port_by_name;
 
     /* Configuration. */