const struct ipt_icmp *icmpinfo = par->matchinfo;
/* Must specify no unknown invflags */
- return !(icmpinfo->invflags & ~IPT_ICMP_INV);
+ return (icmpinfo->invflags & ~IPT_ICMP_INV) ? -EINVAL : 0;
}
/* The built-in targets: standard (NULL) and error. */