Export kamailio/db_mysql parameters through the module api.

All parameters original exported by kamailio/db_mysql are now exported
thought the api of the merged module in sip-router/modules/db_mysql.

The parameter ping_interval is already present in the sources coming
from ser, so we removed the original parameter from kamailio and used
the one coming from ser.

modules/db_mysql/km_db_mysql.c

@@ -47,7 +47,6 @@
 
 #include <mysql/mysql.h>
 
-unsigned int db_mysql_ping_interval = 5 * 60; /* Default is 5 minutes */
 unsigned int db_mysql_timeout_interval = 2;   /* Default is 6 seconds */
 unsigned int db_mysql_auto_reconnect = 1;     /* Default is enabled   */
 
@@ -67,7 +66,7 @@ static kam_cmd_export_t cmds[] = {
  * Exported parameters
  */
 static param_export_t params[] = {
-	{"ping_interval",    INT_PARAM, &db_mysql_ping_interval},
+/*	{"ping_interval",    INT_PARAM, &db_mysql_ping_interval}, */
 	{"timeout_interval", INT_PARAM, &db_mysql_timeout_interval},
 	{"auto_reconnect",   INT_PARAM, &db_mysql_auto_reconnect},
 	{0, 0, 0}

modules/db_mysql/km_db_mysql.h

@@ -40,7 +40,6 @@
 
 #include "../../lib/srdb1/db.h"
 
-extern unsigned int db_mysql_ping_interval;
 extern unsigned int db_mysql_timeout_interval;
 extern unsigned int db_mysql_auto_reconnect;
 

modules/db_mysql/km_dbase.c

@@ -42,6 +42,7 @@
 #include "../../dprint.h"
 #include "../../lib/srdb1/db_query.h"
 #include "../../lib/srdb1/db_ut.h"
+#include "mysql_mod.h"
 #include "km_val.h"
 #include "km_my_con.h"
 #include "km_res.h"
@@ -75,9 +76,9 @@ static int db_mysql_submit_query(const db1_con_t* _h, const str* _s)
 		return -1;
 	}
 
-	if (db_mysql_ping_interval) {
+	if (my_ping_interval) {
 		t = time(0);
-		if ((t - CON_TIMESTAMP(_h)) > db_mysql_ping_interval) {
+		if ((t - CON_TIMESTAMP(_h)) > my_ping_interval) {
 			if (mysql_ping(CON_CONNECTION(_h))) {
 				LM_WARN("driver error on ping: %s\n", mysql_error(CON_CONNECTION(_h)));
 			}

modules/db_mysql/mysql_mod.c

@@ -97,6 +97,9 @@ static param_export_t params[] = {
 	{"send_timeout",    PARAM_INT, &my_send_to},
 	{"receive_timeout", PARAM_INT, &my_recv_to},
 	{"retries",         PARAM_INT, &my_retries},
+
+	{"timeout_interval", INT_PARAM, &db_mysql_timeout_interval},
+	{"auto_reconnect",   INT_PARAM, &db_mysql_auto_reconnect},
 	{0, 0, 0}
 };