C++ (Cpp) nft_unregister_expr Examples

Example #1

File: nft_compat.c Project: avagin/linux

static int __init nft_compat_module_init(void)
{
	int ret;

	ret = nft_register_expr(&nft_match_type);
	if (ret < 0)
		return ret;

	ret = nft_register_expr(&nft_target_type);
	if (ret < 0)
		goto err_match;

	ret = nfnetlink_subsys_register(&nfnl_compat_subsys);
	if (ret < 0) {
		pr_err("nft_compat: cannot register with nfnetlink.\n");
		goto err_target;
	}

	return ret;
err_target:
	nft_unregister_expr(&nft_target_type);
err_match:
	nft_unregister_expr(&nft_match_type);
	return ret;
}

Example #2

File: nft_reject_ipv4.c Project: AlexShiLucky/linux

static void __exit nft_reject_ipv4_module_exit(void)
{
	nft_unregister_expr(&nft_reject_ipv4_type);
}

Example #3

File: nft_quota.c Project: AlexShiLucky/linux

static void __exit nft_quota_module_exit(void)
{
	nft_unregister_expr(&nft_quota_type);
	nft_unregister_obj(&nft_quota_obj_type);
}

Example #4

File: nft_dup_netdev.c Project: 020gzh/linux

static void __exit nft_dup_netdev_module_exit(void)
{
	nft_unregister_expr(&nft_dup_netdev_type);
}

Example #5

void nft_range_module_exit(void)
{
	nft_unregister_expr(&nft_range_type);
}

Example #6

File: nft_bitwise.c Project: 020gzh/linux

void nft_bitwise_module_exit(void)
{
	nft_unregister_expr(&nft_bitwise_type);
}

Example #7

File: nft_meta_bridge.c Project: mikuhatsune001/linux2.6.32

static void __exit nft_meta_bridge_module_exit(void)
{
	nft_unregister_expr(&nft_meta_bridge_type);
}

Example #8

File: nft_fib_ipv6.c Project: AshishNamdev/linux

static u32 __nft_fib6_eval_type(const struct nft_fib *priv,
				const struct nft_pktinfo *pkt)
{
	const struct net_device *dev = NULL;
	const struct nf_ipv6_ops *v6ops;
	const struct nf_afinfo *afinfo;
	int route_err, addrtype;
	struct rt6_info *rt;
	struct flowi6 fl6 = {
		.flowi6_iif = LOOPBACK_IFINDEX,
		.flowi6_proto = pkt->tprot,
	};
	u32 ret = 0;

	afinfo = nf_get_afinfo(NFPROTO_IPV6);
	if (!afinfo)
		return RTN_UNREACHABLE;

	if (priv->flags & NFTA_FIB_F_IIF)
		dev = nft_in(pkt);
	else if (priv->flags & NFTA_FIB_F_OIF)
		dev = nft_out(pkt);

	nft_fib6_flowi_init(&fl6, priv, pkt, dev);

	v6ops = nf_get_ipv6_ops();
	if (dev && v6ops && v6ops->chk_addr(nft_net(pkt), &fl6.daddr, dev, true))
		ret = RTN_LOCAL;

	route_err = afinfo->route(nft_net(pkt), (struct dst_entry **)&rt,
				  flowi6_to_flowi(&fl6), false);
	if (route_err)
		goto err;

	if (rt->rt6i_flags & RTF_REJECT) {
		route_err = rt->dst.error;
		dst_release(&rt->dst);
		goto err;
	}

	if (ipv6_anycast_destination((struct dst_entry *)rt, &fl6.daddr))
		ret = RTN_ANYCAST;
	else if (!dev && rt->rt6i_flags & RTF_LOCAL)
		ret = RTN_LOCAL;

	dst_release(&rt->dst);

	if (ret)
		return ret;

	addrtype = ipv6_addr_type(&fl6.daddr);

	if (addrtype & IPV6_ADDR_MULTICAST)
		return RTN_MULTICAST;
	if (addrtype & IPV6_ADDR_UNICAST)
		return RTN_UNICAST;

	return RTN_UNSPEC;
 err:
	switch (route_err) {
	case -EINVAL:
		return RTN_BLACKHOLE;
	case -EACCES:
		return RTN_PROHIBIT;
	case -EAGAIN:
		return RTN_THROW;
	default:
		break;
	}

	return RTN_UNREACHABLE;
}

void nft_fib6_eval_type(const struct nft_expr *expr, struct nft_regs *regs,
			const struct nft_pktinfo *pkt)
{
	const struct nft_fib *priv = nft_expr_priv(expr);
	u32 *dest = &regs->data[priv->dreg];

	*dest = __nft_fib6_eval_type(priv, pkt);
}
EXPORT_SYMBOL_GPL(nft_fib6_eval_type);

void nft_fib6_eval(const struct nft_expr *expr, struct nft_regs *regs,
		   const struct nft_pktinfo *pkt)
{
	const struct nft_fib *priv = nft_expr_priv(expr);
	const struct net_device *oif = NULL;
	u32 *dest = &regs->data[priv->dreg];
	struct flowi6 fl6 = {
		.flowi6_iif = LOOPBACK_IFINDEX,
		.flowi6_proto = pkt->tprot,
	};
	struct rt6_info *rt;
	int lookup_flags;

	if (priv->flags & NFTA_FIB_F_IIF)
		oif = nft_in(pkt);
	else if (priv->flags & NFTA_FIB_F_OIF)
		oif = nft_out(pkt);

	lookup_flags = nft_fib6_flowi_init(&fl6, priv, pkt, oif);

	if (nft_hook(pkt) == NF_INET_PRE_ROUTING &&
	    nft_fib_is_loopback(pkt->skb, nft_in(pkt))) {
		nft_fib_store_result(dest, priv->result, pkt,
				     nft_in(pkt)->ifindex);
		return;
	}

	*dest = 0;
 again:
	rt = (void *)ip6_route_lookup(nft_net(pkt), &fl6, lookup_flags);
	if (rt->dst.error)
		goto put_rt_err;

	/* Should not see RTF_LOCAL here */
	if (rt->rt6i_flags & (RTF_REJECT | RTF_ANYCAST | RTF_LOCAL))
		goto put_rt_err;

	if (oif && oif != rt->rt6i_idev->dev) {
		/* multipath route? Try again with F_IFACE */
		if ((lookup_flags & RT6_LOOKUP_F_IFACE) == 0) {
			lookup_flags |= RT6_LOOKUP_F_IFACE;
			fl6.flowi6_oif = oif->ifindex;
			ip6_rt_put(rt);
			goto again;
		}
	}

	switch (priv->result) {
	case NFT_FIB_RESULT_OIF:
		*dest = rt->rt6i_idev->dev->ifindex;
		break;
	case NFT_FIB_RESULT_OIFNAME:
		strncpy((char *)dest, rt->rt6i_idev->dev->name, IFNAMSIZ);
		break;
	default:
		WARN_ON_ONCE(1);
		break;
	}

 put_rt_err:
	ip6_rt_put(rt);
}
EXPORT_SYMBOL_GPL(nft_fib6_eval);

static struct nft_expr_type nft_fib6_type;

static const struct nft_expr_ops nft_fib6_type_ops = {
	.type		= &nft_fib6_type,
	.size		= NFT_EXPR_SIZE(sizeof(struct nft_fib)),
	.eval		= nft_fib6_eval_type,
	.init		= nft_fib_init,
	.dump		= nft_fib_dump,
	.validate	= nft_fib_validate,
};

static const struct nft_expr_ops nft_fib6_ops = {
	.type		= &nft_fib6_type,
	.size		= NFT_EXPR_SIZE(sizeof(struct nft_fib)),
	.eval		= nft_fib6_eval,
	.init		= nft_fib_init,
	.dump		= nft_fib_dump,
	.validate	= nft_fib_validate,
};

static const struct nft_expr_ops *
nft_fib6_select_ops(const struct nft_ctx *ctx,
		    const struct nlattr * const tb[])
{
	enum nft_fib_result result;

	if (!tb[NFTA_FIB_RESULT])
		return ERR_PTR(-EINVAL);

	result = ntohl(nla_get_be32(tb[NFTA_FIB_RESULT]));

	switch (result) {
	case NFT_FIB_RESULT_OIF:
		return &nft_fib6_ops;
	case NFT_FIB_RESULT_OIFNAME:
		return &nft_fib6_ops;
	case NFT_FIB_RESULT_ADDRTYPE:
		return &nft_fib6_type_ops;
	default:
		return ERR_PTR(-EOPNOTSUPP);
	}
}

static struct nft_expr_type nft_fib6_type __read_mostly = {
	.name		= "fib",
	.select_ops	= &nft_fib6_select_ops,
	.policy		= nft_fib_policy,
	.maxattr	= NFTA_FIB_MAX,
	.family		= NFPROTO_IPV6,
	.owner		= THIS_MODULE,
};

static int __init nft_fib6_module_init(void)
{
	return nft_register_expr(&nft_fib6_type);
}

static void __exit nft_fib6_module_exit(void)
{
	nft_unregister_expr(&nft_fib6_type);
}
module_init(nft_fib6_module_init);
module_exit(nft_fib6_module_exit);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Florian Westphal <*****@*****.**>");
MODULE_ALIAS_NFT_AF_EXPR(10, "fib");

Example #9

File: nft_meta_target.c Project: AnadoluPanteri/kernel-plus-harmattan

static void __exit nft_meta_target_exit(void)
{
	nft_unregister_expr(&meta_target);
}

Example #10

File: nf_table_nat_ipv4.c Project: sameergupta01/net

static void __exit nf_table_nat_exit(void)
{
	nft_unregister_expr(&nft_nat_ops);
	nft_unregister_table(&nf_table_nat_ipv4, AF_INET);
}

Example #11

File: nft_byteorder.c Project: 020gzh/linux

void nft_byteorder_module_exit(void)
{
	nft_unregister_expr(&nft_byteorder_type);
}

Example #12

File: nft_osf.c Project: avagin/linux

static void __exit nft_osf_module_exit(void)
{
	return nft_unregister_expr(&nft_osf_type);
}

Example #13

File: nft_counter.c Project: Anjali05/linux

static void __exit nft_counter_module_exit(void)
{
	nft_unregister_expr(&nft_counter_type);
	nft_unregister_obj(&nft_counter_obj_type);
}

Example #14

File: nft_objref.c Project: the-snowwhite/linux-socfpga

static void __exit nft_objref_module_exit(void)
{
	nft_unregister_expr(&nft_objref_type);
}

Example #15

File: nft_compat.c Project: avagin/linux

static void __exit nft_compat_module_exit(void)
{
	nfnetlink_subsys_unregister(&nfnl_compat_subsys);
	nft_unregister_expr(&nft_target_type);
	nft_unregister_expr(&nft_match_type);
}

Example #16

File: nft_masq_ipv6.c Project: 19Dan01/linux

static void __exit nft_masq_ipv6_module_exit(void)
{
	nft_unregister_expr(&nft_masq_ipv6_type);
	nf_nat_masquerade_ipv6_unregister_notifier();
}

Example #17

File: nft_immediate.c Project: acton393/linux

void nft_immediate_module_exit(void)
{
	nft_unregister_expr(&nft_imm_type);
}

Example #18

File: nft_fib_inet.c Project: AlexShiLucky/linux

static void __exit nft_fib_inet_module_exit(void)
{
	nft_unregister_expr(&nft_fib_inet_type);
}

Example #19

File: nft_connlimit.c Project: krzk/linux

static void __exit nft_connlimit_module_exit(void)
{
	nft_unregister_expr(&nft_connlimit_type);
	nft_unregister_obj(&nft_connlimit_obj_type);
}

Example #20

File: nft_lookup.c Project: IDM350/linux

void nft_lookup_module_exit(void)
{
	nft_unregister_expr(&nft_lookup_type);
}

Example #21

File: nft_redir_ipv6.c Project: AshishNamdev/linux

static void __exit nft_redir_ipv6_module_exit(void)
{
	nft_unregister_expr(&nft_redir_ipv6_type);
}

Example #22

File: nft_queue.c Project: AshishNamdev/linux

static void __exit nft_queue_module_exit(void)
{
	nft_unregister_expr(&nft_queue_type);
}

Example #23

File: nft_limit.c Project: asmalldev/linux

static void __exit nft_limit_module_exit(void)
{
	nft_unregister_expr(&nft_limit_type);
}

Example #24

File: nft_chain_nat_ipv4.c Project: StonyBrookUniversity/NFTable-porting-on-Android-Goldfish

static void __exit nft_chain_nat_exit(void)
{
	nft_unregister_expr(&nft_nat_type);
	nft_unregister_chain_type(&nft_chain_nat_ipv4);
}