Update comm_common.cpp

src/gausskernel/cbb/communication/comm_proxy/comm_common.cpp

@@ -285,7 +285,7 @@ description: The function check if the process currently working has loaded tran
 arguments: void
 return value: 0 or 1, if 1, then at least one loaded transcation exists, if 0, no one.
 note: none
-date: 2022/8/4
+date: 2022/8/5
 contact: 18720816902
 */
 int CommCheckLtranProcess()
@@ -417,7 +417,7 @@ arguments: The first argument is a pointer of type const char* to a string that
                    from string str_attr, we can use these ids to bind specific CPU.
 return value: void
 note: none
-date: 2022/8/4
+date: 2022/8/5
 contact: 18720816902
 */
 static void ParseCommProxyNumaBind(
@@ -520,6 +520,22 @@ bool ParseCommProxyAttr(CommProxyConfig* config)
     return true;
 }
 
+/*
+function name: CommCheckFilterMatch
+description: This function compare the ip and port allowed with ip and port gotten from
+				    Filter, if they are correspondingly same, it will return true value.
+arguments: The first argument is a pointer of type const char* to a string that indicating
+				   the id and port of the request been sent to Filter, the id and port have been 
+                   separated by character ':'.
+                   The second argument is an integer telling us we the length of the string first 
+                   argument directs.
+                   The third argument tells us the ip allowed.
+                   The fourth argument tells us the port allowed.
+return value: static bool
+note: none
+date: 2022/8/4
+contact: 18720816902
+*/
 static bool CommCheckFilterMatch(const char *filter, int len, const char *ip, int port)
 {
     char *str_ip = NULL;