icmp_checkentry(const char *tablename,
	   const void *info,
	   const struct xt_match *match,
	   void *matchinfo,
	   unsigned int hook_mask)
{
	const struct ipt_icmp *icmpinfo = matchinfo;

	/* Must specify no unknown invflags */
	return !(icmpinfo->invflags & ~IPT_ICMP_INV);
}
icmp_checkentry(const char *tablename,
	   const void *info,
	   const struct xt_match *match,
	   void *matchinfo,
	   unsigned int hook_mask)
{
	const struct ipt_icmp *icmpinfo = matchinfo;

	 
	return !(icmpinfo->invflags & ~IPT_ICMP_INV);
}