/* *  ebt_mark_m * *	Authors: *	Bart De Schuymer <bdschuym@pandora.be> * *  July, 2002 * */#include <linux/netfilter_bridge/ebtables.h>#include <linux/netfilter_bridge/ebt_mark_m.h>#include <linux/module.h>static int ebt_filter_mark(const struct sk_buff *skb,   const struct net_device *in, const struct net_device *out, const void *data,   unsigned int datalen){	struct ebt_mark_m_info *info = (struct ebt_mark_m_info *) data;	if (info->bitmask & EBT_MARK_OR)		return !(!!(skb->nfmark & info->mask) ^ info->invert);	return !(((skb->nfmark & info->mask) == info->mark) ^ info->invert);}static int ebt_mark_check(const char *tablename, unsigned int hookmask,   const struct ebt_entry *e, void *data, unsigned int datalen){        struct ebt_mark_m_info *info = (struct ebt_mark_m_info *) data;	if (datalen != EBT_ALIGN(sizeof(struct ebt_mark_m_info)))		return -EINVAL;	if (info->bitmask & ~EBT_MARK_MASK)		return -EINVAL;	if ((info->bitmask & EBT_MARK_OR) && (info->bitmask & EBT_MARK_AND))		return -EINVAL;	if (!info->bitmask)		return -EINVAL;	return 0;}static struct ebt_match filter_mark ={	.name		= EBT_MARK_MATCH,	.match		= ebt_filter_mark,	.check		= ebt_mark_check,	.me		= THIS_MODULE,};static int __init init(void){	return ebt_register_match(&filter_mark);}static void __exit fini(void){	ebt_unregister_match(&filter_mark);}module_init(init);module_exit(fini);MODULE_LICENSE("GPL");