static void __exit owner_mt_exit(void)
{
xt_unregister_match(&owner_mt_reg);
}
void xtnu_unregister_match(struct xtnu_match *nt)
{
xt_unregister_match(nt->__compat_match);
kfree(nt->__compat_match);
}
static void __exit xt_rateest_mt_fini(void)
{
xt_unregister_match(&xt_rateest_mt_reg);
}
static void __exit mac_mt_exit(void)
{
xt_unregister_match(&mac_mt_reg);
}
static void __exit comment_mt_exit(void)
{
xt_unregister_match(&comment_mt_reg);
}
static void __exit devgroup_mt_exit(void)
{
xt_unregister_match(&devgroup_mt_reg);
}
static void __exit ipv6header_mt6_exit(void)
{
xt_unregister_match(&ipv6header_mt6_reg);
}
static void __exit statistic_mt_exit(void)
{
xt_unregister_match(&xt_statistic_mt_reg);
}
static void __exit mark_mt_exit(void)
{
xt_unregister_match(&mark_mt_reg);
xt_unregister_target(&mark_tg_reg);
}
static void __exit pkttype_mt_exit(void)
{
xt_unregister_match(&pkttype_mt_reg);
}
static void __exit realm_mt_exit(void)
{
xt_unregister_match(&realm_mt_reg);
}
static void __exit state_mt_exit(void)
{
xt_unregister_match(&state_mt_reg);
}
static void __exit time_mt_exit(void)
{
xt_unregister_match(&xt_time_mt_reg);
}
static void __exit ttl_mt_exit(void)
{
xt_unregister_match(&ttl_mt_reg);
}
static void __exit helper_mt_exit(void)
{
xt_unregister_match(&helper_mt_reg);
}
static void __exit rt_mt6_exit(void)
{
xt_unregister_match(&rt_mt6_reg);
}
static void __exit ebt_pkttype_fini(void)
{
xt_unregister_match(&ebt_pkttype_mt_reg);
}
static void __exit physdev_mt_exit(void)
{
xt_unregister_match(&physdev_mt_reg);
}
static void __exit bpf_mt_exit(void)
{
xt_unregister_match(&bpf_mt_reg);
}
static void __exit xt_realm_fini(void)
{
xt_unregister_match(&realm_match);
}
static void __exit quota_mt_exit(void)
{
xt_unregister_match("a_mt_reg);
}
static void __exit u32_mt_exit(void)
{
xt_unregister_match(&xt_u32_mt_reg);
}
static bool rpfilter_lookup_reverse6(const struct sk_buff *skb,
const struct net_device *dev, u8 flags)
{
struct rt6_info *rt;
struct ipv6hdr *iph = ipv6_hdr(skb);
bool ret = false;
struct flowi6 fl6 = {
.flowi6_iif = LOOPBACK_IFINDEX,
.flowlabel = (* (__be32 *) iph) & IPV6_FLOWINFO_MASK,
.flowi6_proto = iph->nexthdr,
.daddr = iph->saddr,
};
int lookup_flags;
if (rpfilter_addr_unicast(&iph->daddr)) {
memcpy(&fl6.saddr, &iph->daddr, sizeof(struct in6_addr));
lookup_flags = RT6_LOOKUP_F_HAS_SADDR;
} else {
lookup_flags = 0;
}
fl6.flowi6_mark = flags & XT_RPFILTER_VALID_MARK ? skb->mark : 0;
if ((flags & XT_RPFILTER_LOOSE) == 0) {
fl6.flowi6_oif = dev->ifindex;
lookup_flags |= RT6_LOOKUP_F_IFACE;
}
rt = (void *) ip6_route_lookup(dev_net(dev), &fl6, lookup_flags);
if (rt->dst.error)
goto out;
if (rt->rt6i_flags & (RTF_REJECT|RTF_ANYCAST))
goto out;
if (rt->rt6i_flags & RTF_LOCAL) {
ret = flags & XT_RPFILTER_ACCEPT_LOCAL;
goto out;
}
if (rt->rt6i_idev->dev == dev || (flags & XT_RPFILTER_LOOSE))
ret = true;
out:
ip6_rt_put(rt);
return ret;
}
static bool rpfilter_is_local(const struct sk_buff *skb)
{
const struct rt6_info *rt = (const void *) skb_dst(skb);
return rt && (rt->rt6i_flags & RTF_LOCAL);
}
static bool rpfilter_mt(const struct sk_buff *skb, struct xt_action_param *par)
{
const struct xt_rpfilter_info *info = par->matchinfo;
int saddrtype;
struct ipv6hdr *iph;
bool invert = info->flags & XT_RPFILTER_INVERT;
if (rpfilter_is_local(skb))
return true ^ invert;
iph = ipv6_hdr(skb);
saddrtype = ipv6_addr_type(&iph->saddr);
if (unlikely(saddrtype == IPV6_ADDR_ANY))
return true ^ invert; /* not routable: forward path will drop it */
return rpfilter_lookup_reverse6(skb, par->in, info->flags) ^ invert;
}
static int rpfilter_check(const struct xt_mtchk_param *par)
{
const struct xt_rpfilter_info *info = par->matchinfo;
unsigned int options = ~XT_RPFILTER_OPTION_MASK;
if (info->flags & options) {
pr_info("unknown options encountered");
return -EINVAL;
}
if (strcmp(par->table, "mangle") != 0 &&
strcmp(par->table, "raw") != 0) {
pr_info("match only valid in the \'raw\' "
"or \'mangle\' tables, not \'%s\'.\n", par->table);
return -EINVAL;
}
return 0;
}
static struct xt_match rpfilter_mt_reg __read_mostly = {
.name = "rpfilter",
.family = NFPROTO_IPV6,
.checkentry = rpfilter_check,
.match = rpfilter_mt,
.matchsize = sizeof(struct xt_rpfilter_info),
.hooks = (1 << NF_INET_PRE_ROUTING),
.me = THIS_MODULE
};
static int __init rpfilter_mt_init(void)
{
return xt_register_match(&rpfilter_mt_reg);
}
static void __exit rpfilter_mt_exit(void)
{
xt_unregister_match(&rpfilter_mt_reg);
}
module_init(rpfilter_mt_init);
module_exit(rpfilter_mt_exit);
static void __exit fini(void)
{
xt_unregister_match(AF_INET, &state_match);
xt_unregister_match(AF_INET6, &state6_match);
}
static void __exit ebt_mark_m_fini(void)
{
xt_unregister_match(&ebt_mark_mt_reg);
}
static void __exit ipt_iprange_fini(void)
{
xt_unregister_match(&iprange_match);
}
static void __exit fini(void)
{
printk(KERN_INFO "exp fini\n");
xt_unregister_match(&exp_match);
}
static void __exit frag_mt6_exit(void)
{
xt_unregister_match(&frag_mt6_reg);
}
static void __exit ip6t_eui64_fini(void)
{
xt_unregister_match(&eui64_match);
}
static void __exit xt_pkttype_fini(void)
{
xt_unregister_match(&pkttype_match);
xt_unregister_match(&pkttype6_match);
}
