#include <linux/kernel.h>#include <linux/init.h>#include <linux/netfilter.h>	/* for nf_register_sockopt */#include "../mx/mx.h"	/* for mutiplexer registration */#include "db.h"		/* for igmp_if_list_create declaration */#include "util.h"	/* igmp_stp_port_forwarding/disabled support */#include "igmp_netfilter.h"static char multicast_mac[6] =  {0x01,0x00,0x5e,0x00,0x00,0x00};static char multicast_mask[6] = {0xff,0xff,0xff,0x00,0x00,0x00};extern struct nf_sockopt_ops igmpsnp_sockopts;int igmp_received (struct sk_buff *);int igmp_report_cleaner (void * vp);extern void (*igmp_stp_port_forwarding)(int);extern void (*igmp_stp_port_disabled)(int);int __init init_igmpsnooping(void){	debug ("starting IGMP snooping functions..\n");	if (nf_register_sockopt (&igmpsnp_sockopts))	{		debug ("IGMP snooping: cannot register sockopt..\n");		return 1;	}	mx_register (multicast_mac, multicast_mask, igmp_received);	igmp_snooping_stats_init (1);	igmp_snooping_db_init (1);	igmp_stp_port_forwarding = _igmp_stp_port_forwarding;	igmp_stp_port_disabled = _igmp_stp_port_disabled;	update_portmasks ();	kernel_thread ((int (*)(void *))igmp_report_cleaner, NULL, 0);	return 0;}void __exit cleanup_igmpsnooping(void){	debug ("leaving IGMP snooping functions..\n");	nf_unregister_sockopt (&igmpsnp_sockopts);	mx_unregister (multicast_mac, multicast_mask);}module_init(init_igmpsnooping);module_exit(cleanup_igmpsnooping);