Add support for module parameters under /sys ...

ip_vs_ftp.c

--- ip_vs_ftp.c.orig	2011-08-30 21:34:43.769232489 +0100
+++ ip_vs_ftp.c	2011-08-30 22:12:31.193230337 +0100
@@ -52,8 +52,10 @@
  * List of ports (up to IP_VS_APP_MAX_PORTS) to be handled by helper
  * First port is set to the default port.
  */
+static unsigned int ports_count = 0;
 static unsigned short ports[IP_VS_APP_MAX_PORTS] = {21, 0};
-module_param_array(ports, ushort, NULL, 0);
+
+module_param_array(ports, ushort, &ports_count, 0444);
 MODULE_PARM_DESC(ports, "Ports to monitor for FTP control commands");
 
 
@@ -411,7 +413,10 @@
 	if (ret)
 		return ret;
 
-	for (i=0; i<IP_VS_APP_MAX_PORTS; i++) {
+	if (!ports_count)
+		ports_count = 1;
+
+	for (i=0; i<ports_count; i++) {
 		if (!ports[i])
 			continue;
 		ret = register_ip_vs_app_inc(app, app->protocol, ports[i]);