net/colo-compare.c: Fix comments and scheme

Signed-off-by: NZhang Chen <zhangchen.fnst@cn.fujitsu.com>
Signed-off-by: NJason Wang <jasowang@redhat.com>

net/colo-compare.c

@@ -41,27 +41,27 @@
 #define REGULAR_PACKET_CHECK_MS 3000
 
 /*
-  + CompareState ++
-  |               |
-  +---------------+   +---------------+         +---------------+
-  |conn list      +--->conn           +--------->conn           |
-  +---------------+   +---------------+         +---------------+
-  |               |     |           |             |          |
-  +---------------+ +---v----+  +---v----+    +---v----+ +---v----+
-                    |primary |  |secondary    |primary | |secondary
-                    |packet  |  |packet  +    |packet  | |packet  +
-                    +--------+  +--------+    +--------+ +--------+
-                        |           |             |          |
-                    +---v----+  +---v----+    +---v----+ +---v----+
-                    |primary |  |secondary    |primary | |secondary
-                    |packet  |  |packet  +    |packet  | |packet  +
-                    +--------+  +--------+    +--------+ +--------+
-                        |           |             |          |
-                    +---v----+  +---v----+    +---v----+ +---v----+
-                    |primary |  |secondary    |primary | |secondary
-                    |packet  |  |packet  +    |packet  | |packet  +
-                    +--------+  +--------+    +--------+ +--------+
-*/
+ *  + CompareState ++
+ *  |               |
+ *  +---------------+   +---------------+         +---------------+
+ *  |   conn list   + - >      conn     + ------- >      conn     + -- > ......
+ *  +---------------+   +---------------+         +---------------+
+ *  |               |     |           |             |          |
+ *  +---------------+ +---v----+  +---v----+    +---v----+ +---v----+
+ *                    |primary |  |secondary    |primary | |secondary
+ *                    |packet  |  |packet  +    |packet  | |packet  +
+ *                    +--------+  +--------+    +--------+ +--------+
+ *                        |           |             |          |
+ *                    +---v----+  +---v----+    +---v----+ +---v----+
+ *                    |primary |  |secondary    |primary | |secondary
+ *                    |packet  |  |packet  +    |packet  | |packet  +
+ *                    +--------+  +--------+    +--------+ +--------+
+ *                        |           |             |          |
+ *                    +---v----+  +---v----+    +---v----+ +---v----+
+ *                    |primary |  |secondary    |primary | |secondary
+ *                    |packet  |  |packet  +    |packet  | |packet  +
+ *                    +--------+  +--------+    +--------+ +--------+
+ */
 typedef struct CompareState {
     Object parent;
 
@@ -75,14 +75,14 @@ typedef struct CompareState {
     SocketReadState sec_rs;
     bool vnet_hdr;
 
-    /* connection list: the connections belonged to this NIC could be found
-     * in this list.
-     * element type: Connection
+    /*
+     * Record the connection that through the NIC
+     * Element type: Connection
      */
     GQueue conn_list;
-    /* hashtable to save connection */
+    /* Record the connection without repetition */
     GHashTable *connection_track_table;
-    /* compare thread, a thread for each NIC */
+    /* This thread just do packet compare job */
     QemuThread thread;
 
     GMainContext *worker_context;
@@ -445,8 +445,11 @@ static int colo_old_packet_check_one_conn(Connection *conn,
                                  (GCompareFunc)colo_old_packet_check_one);
 
     if (result) {
-        /* do checkpoint will flush old packet */
-        /* TODO: colo_notify_checkpoint();*/
+        /* Do checkpoint will flush old packet */
+        /*
+         * TODO: Notify colo frame to do checkpoint.
+         * colo_compare_inconsistent_notify();
+         */
         return 0;
     }