[thirdparty/kernel/stable.git] / net / sched / act_tunnel_key.c

/*
 * Copyright (c) 2016, Amir Vadai <amir@vadai.me>
 * Copyright (c) 2016, Mellanox Technologies. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 */

#include <linux/module.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/skbuff.h>
#include <linux/rtnetlink.h>
#include <net/geneve.h>
#include <net/netlink.h>
#include <net/pkt_sched.h>
#include <net/dst.h>

#include <linux/tc_act/tc_tunnel_key.h>
#include <net/tc_act/tc_tunnel_key.h>

static unsigned int tunnel_key_net_id;
static struct tc_action_ops act_tunnel_key_ops;

static int tunnel_key_act(struct sk_buff *skb, const struct tc_action *a,
			  struct tcf_result *res)
{
	struct tcf_tunnel_key *t = to_tunnel_key(a);
	struct tcf_tunnel_key_params *params;
	int action;

	rcu_read_lock();

	params = rcu_dereference(t->params);

	tcf_lastuse_update(&t->tcf_tm);
	bstats_cpu_update(this_cpu_ptr(t->common.cpu_bstats), skb);
	action = params->action;

	switch (params->tcft_action) {
	case TCA_TUNNEL_KEY_ACT_RELEASE:
		skb_dst_drop(skb);
		break;
	case TCA_TUNNEL_KEY_ACT_SET:
		skb_dst_drop(skb);
		skb_dst_set(skb, dst_clone(&params->tcft_enc_metadata->dst));
		break;
	default:
		WARN_ONCE(1, "Bad tunnel_key action %d.\n",
			  params->tcft_action);
		break;
	}

	rcu_read_unlock();

	return action;
}

static const struct nla_policy
enc_opts_policy[TCA_TUNNEL_KEY_ENC_OPTS_MAX + 1] = {
	[TCA_TUNNEL_KEY_ENC_OPTS_GENEVE]	= { .type = NLA_NESTED },
};

static const struct nla_policy
geneve_opt_policy[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_MAX + 1] = {
	[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_CLASS]	   = { .type = NLA_U16 },
	[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_TYPE]	   = { .type = NLA_U8 },
	[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_DATA]	   = { .type = NLA_BINARY,
						       .len = 128 },
};

static int
tunnel_key_copy_geneve_opt(const struct nlattr *nla, void *dst, int dst_len,
			   struct netlink_ext_ack *extack)
{
	struct nlattr *tb[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_MAX + 1];
	int err, data_len, opt_len;
	u8 *data;

	err = nla_parse_nested(tb, TCA_TUNNEL_KEY_ENC_OPT_GENEVE_MAX,
			       nla, geneve_opt_policy, extack);
	if (err < 0)
		return err;

	if (!tb[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_CLASS] ||
	    !tb[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_TYPE] ||
	    !tb[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_DATA]) {
		NL_SET_ERR_MSG(extack, "Missing tunnel key geneve option class, type or data");
		return -EINVAL;
	}

	data = nla_data(tb[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_DATA]);
	data_len = nla_len(tb[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_DATA]);
	if (data_len < 4) {
		NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is less than 4 bytes long");
		return -ERANGE;
	}
	if (data_len % 4) {
		NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is not a multiple of 4 bytes long");
		return -ERANGE;
	}

	opt_len = sizeof(struct geneve_opt) + data_len;
	if (dst) {
		struct geneve_opt *opt = dst;

		WARN_ON(dst_len < opt_len);

		opt->opt_class =
			nla_get_be16(tb[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_CLASS]);
		opt->type = nla_get_u8(tb[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_TYPE]);
		opt->length = data_len / 4; /* length is in units of 4 bytes */
		opt->r1 = 0;
		opt->r2 = 0;
		opt->r3 = 0;

		memcpy(opt + 1, data, data_len);
	}

	return opt_len;
}

static int tunnel_key_copy_opts(const struct nlattr *nla, u8 *dst,
				int dst_len, struct netlink_ext_ack *extack)
{
	int err, rem, opt_len, len = nla_len(nla), opts_len = 0;
	const struct nlattr *attr, *head = nla_data(nla);

	err = nla_validate(head, len, TCA_TUNNEL_KEY_ENC_OPTS_MAX,
			   enc_opts_policy, extack);
	if (err)
		return err;

	nla_for_each_attr(attr, head, len, rem) {
		switch (nla_type(attr)) {
		case TCA_TUNNEL_KEY_ENC_OPTS_GENEVE:
			opt_len = tunnel_key_copy_geneve_opt(attr, dst,
							     dst_len, extack);
			if (opt_len < 0)
				return opt_len;
			opts_len += opt_len;
			if (dst) {
				dst_len -= opt_len;
				dst += opt_len;
			}
			break;
		}
	}

	if (!opts_len) {
		NL_SET_ERR_MSG(extack, "Empty list of tunnel options");
		return -EINVAL;
	}

	if (rem > 0) {
		NL_SET_ERR_MSG(extack, "Trailing data after parsing tunnel key options attributes");
		return -EINVAL;
	}

	return opts_len;
}

static int tunnel_key_get_opts_len(struct nlattr *nla,
				   struct netlink_ext_ack *extack)
{
	return tunnel_key_copy_opts(nla, NULL, 0, extack);
}

static int tunnel_key_opts_set(struct nlattr *nla, struct ip_tunnel_info *info,
			       int opts_len, struct netlink_ext_ack *extack)
{
	info->options_len = opts_len;
	switch (nla_type(nla_data(nla))) {
	case TCA_TUNNEL_KEY_ENC_OPTS_GENEVE:
#if IS_ENABLED(CONFIG_INET)
		info->key.tun_flags |= TUNNEL_GENEVE_OPT;
		return tunnel_key_copy_opts(nla, ip_tunnel_info_opts(info),
					    opts_len, extack);
#else
		return -EAFNOSUPPORT;
#endif
	default:
		NL_SET_ERR_MSG(extack, "Cannot set tunnel options for unknown tunnel type");
		return -EINVAL;
	}
}

static const struct nla_policy tunnel_key_policy[TCA_TUNNEL_KEY_MAX + 1] = {
	[TCA_TUNNEL_KEY_PARMS]	    = { .len = sizeof(struct tc_tunnel_key) },
	[TCA_TUNNEL_KEY_ENC_IPV4_SRC] = { .type = NLA_U32 },
	[TCA_TUNNEL_KEY_ENC_IPV4_DST] = { .type = NLA_U32 },
	[TCA_TUNNEL_KEY_ENC_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
	[TCA_TUNNEL_KEY_ENC_IPV6_DST] = { .len = sizeof(struct in6_addr) },
	[TCA_TUNNEL_KEY_ENC_KEY_ID]   = { .type = NLA_U32 },
	[TCA_TUNNEL_KEY_ENC_DST_PORT] = {.type = NLA_U16},
	[TCA_TUNNEL_KEY_NO_CSUM]      = { .type = NLA_U8 },
	[TCA_TUNNEL_KEY_ENC_OPTS]     = { .type = NLA_NESTED },
};

static int tunnel_key_init(struct net *net, struct nlattr *nla,
			   struct nlattr *est, struct tc_action **a,
			   int ovr, int bind, bool rtnl_held,
			   struct netlink_ext_ack *extack)
{
	struct tc_action_net *tn = net_generic(net, tunnel_key_net_id);
	struct nlattr *tb[TCA_TUNNEL_KEY_MAX + 1];
	struct tcf_tunnel_key_params *params_old;
	struct tcf_tunnel_key_params *params_new;
	struct metadata_dst *metadata = NULL;
	struct tc_tunnel_key *parm;
	struct tcf_tunnel_key *t;
	bool exists = false;
	__be16 dst_port = 0;
	int opts_len = 0;
	__be64 key_id;
	__be16 flags;
	int ret = 0;
	int err;

	if (!nla) {
		NL_SET_ERR_MSG(extack, "Tunnel requires attributes to be passed");
		return -EINVAL;
	}

	err = nla_parse_nested(tb, TCA_TUNNEL_KEY_MAX, nla, tunnel_key_policy,
			       extack);
	if (err < 0) {
		NL_SET_ERR_MSG(extack, "Failed to parse nested tunnel key attributes");
		return err;
	}

	if (!tb[TCA_TUNNEL_KEY_PARMS]) {
		NL_SET_ERR_MSG(extack, "Missing tunnel key parameters");
		return -EINVAL;
	}

	parm = nla_data(tb[TCA_TUNNEL_KEY_PARMS]);
	err = tcf_idr_check_alloc(tn, &parm->index, a, bind);
	if (err < 0)
		return err;
	exists = err;
	if (exists && bind)
		return 0;

	switch (parm->t_action) {
	case TCA_TUNNEL_KEY_ACT_RELEASE:
		break;
	case TCA_TUNNEL_KEY_ACT_SET:
		if (!tb[TCA_TUNNEL_KEY_ENC_KEY_ID]) {
			NL_SET_ERR_MSG(extack, "Missing tunnel key id");
			ret = -EINVAL;
			goto err_out;
		}

		key_id = key32_to_tunnel_id(nla_get_be32(tb[TCA_TUNNEL_KEY_ENC_KEY_ID]));

		flags = TUNNEL_KEY | TUNNEL_CSUM;
		if (tb[TCA_TUNNEL_KEY_NO_CSUM] &&
		    nla_get_u8(tb[TCA_TUNNEL_KEY_NO_CSUM]))
			flags &= ~TUNNEL_CSUM;

		if (tb[TCA_TUNNEL_KEY_ENC_DST_PORT])
			dst_port = nla_get_be16(tb[TCA_TUNNEL_KEY_ENC_DST_PORT]);

		if (tb[TCA_TUNNEL_KEY_ENC_OPTS]) {
			opts_len = tunnel_key_get_opts_len(tb[TCA_TUNNEL_KEY_ENC_OPTS],
							   extack);
			if (opts_len < 0) {
				ret = opts_len;
				goto err_out;
			}
		}

		if (tb[TCA_TUNNEL_KEY_ENC_IPV4_SRC] &&
		    tb[TCA_TUNNEL_KEY_ENC_IPV4_DST]) {
			__be32 saddr;
			__be32 daddr;

			saddr = nla_get_in_addr(tb[TCA_TUNNEL_KEY_ENC_IPV4_SRC]);
			daddr = nla_get_in_addr(tb[TCA_TUNNEL_KEY_ENC_IPV4_DST]);

			metadata = __ip_tun_set_dst(saddr, daddr, 0, 0,
						    dst_port, flags,
						    key_id, opts_len);
		} else if (tb[TCA_TUNNEL_KEY_ENC_IPV6_SRC] &&
			   tb[TCA_TUNNEL_KEY_ENC_IPV6_DST]) {
			struct in6_addr saddr;
			struct in6_addr daddr;

			saddr = nla_get_in6_addr(tb[TCA_TUNNEL_KEY_ENC_IPV6_SRC]);
			daddr = nla_get_in6_addr(tb[TCA_TUNNEL_KEY_ENC_IPV6_DST]);

			metadata = __ipv6_tun_set_dst(&saddr, &daddr, 0, 0, dst_port,
						      0, flags,
						      key_id, 0);
		} else {
			NL_SET_ERR_MSG(extack, "Missing either ipv4 or ipv6 src and dst");
			ret = -EINVAL;
			goto err_out;
		}

		if (!metadata) {
			NL_SET_ERR_MSG(extack, "Cannot allocate tunnel metadata dst");
			ret = -ENOMEM;
			goto err_out;
		}

		if (opts_len) {
			ret = tunnel_key_opts_set(tb[TCA_TUNNEL_KEY_ENC_OPTS],
						  &metadata->u.tun_info,
						  opts_len, extack);
			if (ret < 0)
				goto err_out;
		}

		metadata->u.tun_info.mode |= IP_TUNNEL_INFO_TX;
		break;
	default:
		NL_SET_ERR_MSG(extack, "Unknown tunnel key action");
		ret = -EINVAL;
		goto err_out;
	}

	if (!exists) {
		ret = tcf_idr_create(tn, parm->index, est, a,
				     &act_tunnel_key_ops, bind, true);
		if (ret) {
			NL_SET_ERR_MSG(extack, "Cannot create TC IDR");
			goto err_out;
		}

		ret = ACT_P_CREATED;
	} else if (!ovr) {
		tcf_idr_release(*a, bind);
		NL_SET_ERR_MSG(extack, "TC IDR already exists");
		return -EEXIST;
	}

	t = to_tunnel_key(*a);

	ASSERT_RTNL();
	params_new = kzalloc(sizeof(*params_new), GFP_KERNEL);
	if (unlikely(!params_new)) {
		tcf_idr_release(*a, bind);
		NL_SET_ERR_MSG(extack, "Cannot allocate tunnel key parameters");
		return -ENOMEM;
	}

	params_old = rtnl_dereference(t->params);

	params_new->action = parm->action;
	params_new->tcft_action = parm->t_action;
	params_new->tcft_enc_metadata = metadata;

	rcu_assign_pointer(t->params, params_new);

	if (params_old)
		kfree_rcu(params_old, rcu);

	if (ret == ACT_P_CREATED)
		tcf_idr_insert(tn, *a);

	return ret;

err_out:
	if (exists)
		tcf_idr_release(*a, bind);
	else
		tcf_idr_cleanup(tn, parm->index);
	return ret;
}

static void tunnel_key_release(struct tc_action *a)
{
	struct tcf_tunnel_key *t = to_tunnel_key(a);
	struct tcf_tunnel_key_params *params;

	params = rcu_dereference_protected(t->params, 1);
	if (params) {
		if (params->tcft_action == TCA_TUNNEL_KEY_ACT_SET)
			dst_release(&params->tcft_enc_metadata->dst);

		kfree_rcu(params, rcu);
	}
}

static int tunnel_key_geneve_opts_dump(struct sk_buff *skb,
				       const struct ip_tunnel_info *info)
{
	int len = info->options_len;
	u8 *src = (u8 *)(info + 1);
	struct nlattr *start;

	start = nla_nest_start(skb, TCA_TUNNEL_KEY_ENC_OPTS_GENEVE);
	if (!start)
		return -EMSGSIZE;

	while (len > 0) {
		struct geneve_opt *opt = (struct geneve_opt *)src;

		if (nla_put_be16(skb, TCA_TUNNEL_KEY_ENC_OPT_GENEVE_CLASS,
				 opt->opt_class) ||
		    nla_put_u8(skb, TCA_TUNNEL_KEY_ENC_OPT_GENEVE_TYPE,
			       opt->type) ||
		    nla_put(skb, TCA_TUNNEL_KEY_ENC_OPT_GENEVE_DATA,
			    opt->length * 4, opt + 1))
			return -EMSGSIZE;

		len -= sizeof(struct geneve_opt) + opt->length * 4;
		src += sizeof(struct geneve_opt) + opt->length * 4;
	}

	nla_nest_end(skb, start);
	return 0;
}

static int tunnel_key_opts_dump(struct sk_buff *skb,
				const struct ip_tunnel_info *info)
{
	struct nlattr *start;
	int err;

	if (!info->options_len)
		return 0;

	start = nla_nest_start(skb, TCA_TUNNEL_KEY_ENC_OPTS);
	if (!start)
		return -EMSGSIZE;

	if (info->key.tun_flags & TUNNEL_GENEVE_OPT) {
		err = tunnel_key_geneve_opts_dump(skb, info);
		if (err)
			return err;
	} else {
		return -EINVAL;
	}

	nla_nest_end(skb, start);
	return 0;
}

static int tunnel_key_dump_addresses(struct sk_buff *skb,
				     const struct ip_tunnel_info *info)
{
	unsigned short family = ip_tunnel_info_af(info);

	if (family == AF_INET) {
		__be32 saddr = info->key.u.ipv4.src;
		__be32 daddr = info->key.u.ipv4.dst;

		if (!nla_put_in_addr(skb, TCA_TUNNEL_KEY_ENC_IPV4_SRC, saddr) &&
		    !nla_put_in_addr(skb, TCA_TUNNEL_KEY_ENC_IPV4_DST, daddr))
			return 0;
	}

	if (family == AF_INET6) {
		const struct in6_addr *saddr6 = &info->key.u.ipv6.src;
		const struct in6_addr *daddr6 = &info->key.u.ipv6.dst;

		if (!nla_put_in6_addr(skb,
				      TCA_TUNNEL_KEY_ENC_IPV6_SRC, saddr6) &&
		    !nla_put_in6_addr(skb,
				      TCA_TUNNEL_KEY_ENC_IPV6_DST, daddr6))
			return 0;
	}

	return -EINVAL;
}

static int tunnel_key_dump(struct sk_buff *skb, struct tc_action *a,
			   int bind, int ref)
{
	unsigned char *b = skb_tail_pointer(skb);
	struct tcf_tunnel_key *t = to_tunnel_key(a);
	struct tcf_tunnel_key_params *params;
	struct tc_tunnel_key opt = {
		.index    = t->tcf_index,
		.refcnt   = refcount_read(&t->tcf_refcnt) - ref,
		.bindcnt  = atomic_read(&t->tcf_bindcnt) - bind,
	};
	struct tcf_t tm;

	params = rtnl_dereference(t->params);

	opt.t_action = params->tcft_action;
	opt.action = params->action;

	if (nla_put(skb, TCA_TUNNEL_KEY_PARMS, sizeof(opt), &opt))
		goto nla_put_failure;

	if (params->tcft_action == TCA_TUNNEL_KEY_ACT_SET) {
		struct ip_tunnel_info *info =
			&params->tcft_enc_metadata->u.tun_info;
		struct ip_tunnel_key *key = &info->key;
		__be32 key_id = tunnel_id_to_key32(key->tun_id);

		if (nla_put_be32(skb, TCA_TUNNEL_KEY_ENC_KEY_ID, key_id) ||
		    tunnel_key_dump_addresses(skb,
					      &params->tcft_enc_metadata->u.tun_info) ||
		    nla_put_be16(skb, TCA_TUNNEL_KEY_ENC_DST_PORT, key->tp_dst) ||
		    nla_put_u8(skb, TCA_TUNNEL_KEY_NO_CSUM,
			       !(key->tun_flags & TUNNEL_CSUM)) ||
		    tunnel_key_opts_dump(skb, info))
			goto nla_put_failure;
	}

	tcf_tm_dump(&tm, &t->tcf_tm);
	if (nla_put_64bit(skb, TCA_TUNNEL_KEY_TM, sizeof(tm),
			  &tm, TCA_TUNNEL_KEY_PAD))
		goto nla_put_failure;

	return skb->len;

nla_put_failure:
	nlmsg_trim(skb, b);
	return -1;
}

static int tunnel_key_walker(struct net *net, struct sk_buff *skb,
			     struct netlink_callback *cb, int type,
			     const struct tc_action_ops *ops,
			     struct netlink_ext_ack *extack)
{
	struct tc_action_net *tn = net_generic(net, tunnel_key_net_id);

	return tcf_generic_walker(tn, skb, cb, type, ops, extack);
}

static int tunnel_key_search(struct net *net, struct tc_action **a, u32 index,
			     struct netlink_ext_ack *extack)
{
	struct tc_action_net *tn = net_generic(net, tunnel_key_net_id);

	return tcf_idr_search(tn, a, index);
}

static int tunnel_key_delete(struct net *net, u32 index)
{
	struct tc_action_net *tn = net_generic(net, tunnel_key_net_id);

	return tcf_idr_delete_index(tn, index);
}

static struct tc_action_ops act_tunnel_key_ops = {
	.kind		=	"tunnel_key",
	.type		=	TCA_ACT_TUNNEL_KEY,
	.owner		=	THIS_MODULE,
	.act		=	tunnel_key_act,
	.dump		=	tunnel_key_dump,
	.init		=	tunnel_key_init,
	.cleanup	=	tunnel_key_release,
	.walk		=	tunnel_key_walker,
	.lookup		=	tunnel_key_search,
	.delete		=	tunnel_key_delete,
	.size		=	sizeof(struct tcf_tunnel_key),
};

static __net_init int tunnel_key_init_net(struct net *net)
{
	struct tc_action_net *tn = net_generic(net, tunnel_key_net_id);

	return tc_action_net_init(tn, &act_tunnel_key_ops);
}

static void __net_exit tunnel_key_exit_net(struct list_head *net_list)
{
	tc_action_net_exit(net_list, tunnel_key_net_id);
}

static struct pernet_operations tunnel_key_net_ops = {
	.init = tunnel_key_init_net,
	.exit_batch = tunnel_key_exit_net,
	.id   = &tunnel_key_net_id,
	.size = sizeof(struct tc_action_net),
};

static int __init tunnel_key_init_module(void)
{
	return tcf_register_action(&act_tunnel_key_ops, &tunnel_key_net_ops);
}

static void __exit tunnel_key_cleanup_module(void)
{
	tcf_unregister_action(&act_tunnel_key_ops, &tunnel_key_net_ops);
}

module_init(tunnel_key_init_module);
module_exit(tunnel_key_cleanup_module);

MODULE_AUTHOR("Amir Vadai <amir@vadai.me>");
MODULE_DESCRIPTION("ip tunnel manipulation actions");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
d0f6dd8a AV	1	/*
	2	* Copyright (c) 2016, Amir Vadai <amir@vadai.me>
	3	* Copyright (c) 2016, Mellanox Technologies. All rights reserved.
	4	*
	5	* This program is free software; you can redistribute it and/or modify
	6	* it under the terms of the GNU General Public License as published by
	7	* the Free Software Foundation; either version 2 of the License, or
	8	* (at your option) any later version.
	9	*/
	10
	11	#include <linux/module.h>
	12	#include <linux/init.h>
	13	#include <linux/kernel.h>
	14	#include <linux/skbuff.h>
	15	#include <linux/rtnetlink.h>
0ed5269f	16	#include <net/geneve.h>
d0f6dd8a AV	17	#include <net/netlink.h>
	18	#include <net/pkt_sched.h>
	19	#include <net/dst.h>
d0f6dd8a AV	20
	21	#include <linux/tc_act/tc_tunnel_key.h>
	22	#include <net/tc_act/tc_tunnel_key.h>
	23
c7d03a00	24	static unsigned int tunnel_key_net_id;
d0f6dd8a AV	25	static struct tc_action_ops act_tunnel_key_ops;
	26
	27	static int tunnel_key_act(struct sk_buff skb, const struct tc_action a,
	28	struct tcf_result *res)
	29	{
	30	struct tcf_tunnel_key *t = to_tunnel_key(a);
	31	struct tcf_tunnel_key_params *params;
	32	int action;
	33
	34	rcu_read_lock();
	35
	36	params = rcu_dereference(t->params);
	37
	38	tcf_lastuse_update(&t->tcf_tm);
	39	bstats_cpu_update(this_cpu_ptr(t->common.cpu_bstats), skb);
	40	action = params->action;
	41
	42	switch (params->tcft_action) {
	43	case TCA_TUNNEL_KEY_ACT_RELEASE:
	44	skb_dst_drop(skb);
	45	break;
	46	case TCA_TUNNEL_KEY_ACT_SET:
	47	skb_dst_drop(skb);
	48	skb_dst_set(skb, dst_clone(&params->tcft_enc_metadata->dst));
	49	break;
	50	default:
	51	WARN_ONCE(1, "Bad tunnel_key action %d.\n",
	52	params->tcft_action);
	53	break;
	54	}
	55
	56	rcu_read_unlock();
	57
	58	return action;
	59	}
	60
0ed5269f SH	61	static const struct nla_policy
	62	enc_opts_policy[TCA_TUNNEL_KEY_ENC_OPTS_MAX + 1] = {
	63	[TCA_TUNNEL_KEY_ENC_OPTS_GENEVE] = { .type = NLA_NESTED },
	64	};
	65
	66	static const struct nla_policy
	67	geneve_opt_policy[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_MAX + 1] = {
	68	[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_CLASS] = { .type = NLA_U16 },
	69	[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_TYPE] = { .type = NLA_U8 },
	70	[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_DATA] = { .type = NLA_BINARY,
	71	.len = 128 },
	72	};
	73
	74	static int
	75	tunnel_key_copy_geneve_opt(const struct nlattr nla, void dst, int dst_len,
	76	struct netlink_ext_ack *extack)
	77	{
	78	struct nlattr *tb[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_MAX + 1];
	79	int err, data_len, opt_len;
	80	u8 *data;
	81
	82	err = nla_parse_nested(tb, TCA_TUNNEL_KEY_ENC_OPT_GENEVE_MAX,
	83	nla, geneve_opt_policy, extack);
	84	if (err < 0)
	85	return err;
	86
	87	if (!tb[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_CLASS] \|\|
	88	!tb[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_TYPE] \|\|
	89	!tb[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_DATA]) {
	90	NL_SET_ERR_MSG(extack, "Missing tunnel key geneve option class, type or data");
	91	return -EINVAL;
	92	}
	93
	94	data = nla_data(tb[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_DATA]);
	95	data_len = nla_len(tb[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_DATA]);
	96	if (data_len < 4) {
	97	NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is less than 4 bytes long");
	98	return -ERANGE;
	99	}
	100	if (data_len % 4) {
	101	NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is not a multiple of 4 bytes long");
	102	return -ERANGE;
	103	}
	104
	105	opt_len = sizeof(struct geneve_opt) + data_len;
	106	if (dst) {
	107	struct geneve_opt *opt = dst;
	108
	109	WARN_ON(dst_len < opt_len);
	110
	111	opt->opt_class =
	112	nla_get_be16(tb[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_CLASS]);
	113	opt->type = nla_get_u8(tb[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_TYPE]);
	114	opt->length = data_len / 4; /* length is in units of 4 bytes */
	115	opt->r1 = 0;
	116	opt->r2 = 0;
	117	opt->r3 = 0;
	118
	119	memcpy(opt + 1, data, data_len);
	120	}
	121
	122	return opt_len;
	123	}
	124
125	static int tunnel_key_copy_opts(const struct nlattr nla, u8 dst,
126	int dst_len, struct netlink_ext_ack *extack)
127	{
128	int err, rem, opt_len, len = nla_len(nla), opts_len = 0;
129	const struct nlattr attr, head = nla_data(nla);
130
131	err = nla_validate(head, len, TCA_TUNNEL_KEY_ENC_OPTS_MAX,
132	enc_opts_policy, extack);
133	if (err)
134	return err;
135
136	nla_for_each_attr(attr, head, len, rem) {
137	switch (nla_type(attr)) {
138	case TCA_TUNNEL_KEY_ENC_OPTS_GENEVE:
139	opt_len = tunnel_key_copy_geneve_opt(attr, dst,
140	dst_len, extack);
141	if (opt_len < 0)
142	return opt_len;
143	opts_len += opt_len;
144	if (dst) {
145	dst_len -= opt_len;
146	dst += opt_len;
147	}
148	break;
149	}
150	}
151
152	if (!opts_len) {
153	NL_SET_ERR_MSG(extack, "Empty list of tunnel options");
154	return -EINVAL;
155	}
156
157	if (rem > 0) {
158	NL_SET_ERR_MSG(extack, "Trailing data after parsing tunnel key options attributes");
159	return -EINVAL;
160	}
161
162	return opts_len;
163	}
164
165	static int tunnel_key_get_opts_len(struct nlattr *nla,
166	struct netlink_ext_ack *extack)
167	{
168	return tunnel_key_copy_opts(nla, NULL, 0, extack);
169	}
170
171	static int tunnel_key_opts_set(struct nlattr nla, struct ip_tunnel_info info,
172	int opts_len, struct netlink_ext_ack *extack)
173	{
174	info->options_len = opts_len;
175	switch (nla_type(nla_data(nla))) {
176	case TCA_TUNNEL_KEY_ENC_OPTS_GENEVE:
177	#if IS_ENABLED(CONFIG_INET)
178	info->key.tun_flags \|= TUNNEL_GENEVE_OPT;
179	return tunnel_key_copy_opts(nla, ip_tunnel_info_opts(info),
180	opts_len, extack);
181	#else
182	return -EAFNOSUPPORT;
183	#endif
184	default:
185	NL_SET_ERR_MSG(extack, "Cannot set tunnel options for unknown tunnel type");
186	return -EINVAL;
187	}
188	}
189
d0f6dd8a AV	190	static const struct nla_policy tunnel_key_policy[TCA_TUNNEL_KEY_MAX + 1] = {
	191	[TCA_TUNNEL_KEY_PARMS] = { .len = sizeof(struct tc_tunnel_key) },
	192	[TCA_TUNNEL_KEY_ENC_IPV4_SRC] = { .type = NLA_U32 },
	193	[TCA_TUNNEL_KEY_ENC_IPV4_DST] = { .type = NLA_U32 },
	194	[TCA_TUNNEL_KEY_ENC_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
	195	[TCA_TUNNEL_KEY_ENC_IPV6_DST] = { .len = sizeof(struct in6_addr) },
	196	[TCA_TUNNEL_KEY_ENC_KEY_ID] = { .type = NLA_U32 },
75bfbca0	197	[TCA_TUNNEL_KEY_ENC_DST_PORT] = {.type = NLA_U16},
86087e17	198	[TCA_TUNNEL_KEY_NO_CSUM] = { .type = NLA_U8 },
0ed5269f	199	[TCA_TUNNEL_KEY_ENC_OPTS] = { .type = NLA_NESTED },
d0f6dd8a AV	200	};
	201
	202	static int tunnel_key_init(struct net net, struct nlattr nla,
	203	struct nlattr est, struct tc_action *a,
789871bb VB	204	int ovr, int bind, bool rtnl_held,
789871bb VB	205	struct netlink_ext_ack *extack)
d0f6dd8a AV	206	{
	207	struct tc_action_net *tn = net_generic(net, tunnel_key_net_id);
	208	struct nlattr *tb[TCA_TUNNEL_KEY_MAX + 1];
	209	struct tcf_tunnel_key_params *params_old;
	210	struct tcf_tunnel_key_params *params_new;
	211	struct metadata_dst *metadata = NULL;
	212	struct tc_tunnel_key *parm;
	213	struct tcf_tunnel_key *t;
	214	bool exists = false;
75bfbca0	215	__be16 dst_port = 0;
0ed5269f	216	int opts_len = 0;
d0f6dd8a	217	__be64 key_id;
86087e17	218	__be16 flags;
d0f6dd8a AV	219	int ret = 0;
	220	int err;
	221
9d7298cd SH	222	if (!nla) {
9d7298cd SH	223	NL_SET_ERR_MSG(extack, "Tunnel requires attributes to be passed");
d0f6dd8a	224	return -EINVAL;
9d7298cd	225	}
d0f6dd8a	226
fceb6435	227	err = nla_parse_nested(tb, TCA_TUNNEL_KEY_MAX, nla, tunnel_key_policy,
9d7298cd SH	228	extack);
	229	if (err < 0) {
	230	NL_SET_ERR_MSG(extack, "Failed to parse nested tunnel key attributes");
d0f6dd8a	231	return err;
9d7298cd	232	}
d0f6dd8a	233
9d7298cd SH	234	if (!tb[TCA_TUNNEL_KEY_PARMS]) {
9d7298cd SH	235	NL_SET_ERR_MSG(extack, "Missing tunnel key parameters");
d0f6dd8a	236	return -EINVAL;
9d7298cd	237	}
d0f6dd8a AV	238
d0f6dd8a AV	239	parm = nla_data(tb[TCA_TUNNEL_KEY_PARMS]);
0190c1d4 VB	240	err = tcf_idr_check_alloc(tn, &parm->index, a, bind);
	241	if (err < 0)
	242	return err;
	243	exists = err;
d0f6dd8a AV	244	if (exists && bind)
	245	return 0;
	246
	247	switch (parm->t_action) {
	248	case TCA_TUNNEL_KEY_ACT_RELEASE:
	249	break;
	250	case TCA_TUNNEL_KEY_ACT_SET:
	251	if (!tb[TCA_TUNNEL_KEY_ENC_KEY_ID]) {
9d7298cd	252	NL_SET_ERR_MSG(extack, "Missing tunnel key id");
d0f6dd8a AV	253	ret = -EINVAL;
	254	goto err_out;
	255	}
	256
	257	key_id = key32_to_tunnel_id(nla_get_be32(tb[TCA_TUNNEL_KEY_ENC_KEY_ID]));
	258
86087e17 JB	259	flags = TUNNEL_KEY \| TUNNEL_CSUM;
	260	if (tb[TCA_TUNNEL_KEY_NO_CSUM] &&
	261	nla_get_u8(tb[TCA_TUNNEL_KEY_NO_CSUM]))
	262	flags &= ~TUNNEL_CSUM;
	263
75bfbca0 HHZ	264	if (tb[TCA_TUNNEL_KEY_ENC_DST_PORT])
	265	dst_port = nla_get_be16(tb[TCA_TUNNEL_KEY_ENC_DST_PORT]);
	266
0ed5269f SH	267	if (tb[TCA_TUNNEL_KEY_ENC_OPTS]) {
	268	opts_len = tunnel_key_get_opts_len(tb[TCA_TUNNEL_KEY_ENC_OPTS],
	269	extack);
	270	if (opts_len < 0) {
	271	ret = opts_len;
	272	goto err_out;
	273	}
	274	}
	275
d0f6dd8a AV	276	if (tb[TCA_TUNNEL_KEY_ENC_IPV4_SRC] &&
	277	tb[TCA_TUNNEL_KEY_ENC_IPV4_DST]) {
	278	__be32 saddr;
	279	__be32 daddr;
	280
	281	saddr = nla_get_in_addr(tb[TCA_TUNNEL_KEY_ENC_IPV4_SRC]);
	282	daddr = nla_get_in_addr(tb[TCA_TUNNEL_KEY_ENC_IPV4_DST]);
	283
	284	metadata = __ip_tun_set_dst(saddr, daddr, 0, 0,
86087e17	285	dst_port, flags,
0ed5269f	286	key_id, opts_len);
d0f6dd8a AV	287	} else if (tb[TCA_TUNNEL_KEY_ENC_IPV6_SRC] &&
	288	tb[TCA_TUNNEL_KEY_ENC_IPV6_DST]) {
	289	struct in6_addr saddr;
	290	struct in6_addr daddr;
	291
	292	saddr = nla_get_in6_addr(tb[TCA_TUNNEL_KEY_ENC_IPV6_SRC]);
	293	daddr = nla_get_in6_addr(tb[TCA_TUNNEL_KEY_ENC_IPV6_DST]);
	294
dc594ecd	295	metadata = __ipv6_tun_set_dst(&saddr, &daddr, 0, 0, dst_port,
86087e17	296	0, flags,
75bfbca0	297	key_id, 0);
a1165b59	298	} else {
9d7298cd	299	NL_SET_ERR_MSG(extack, "Missing either ipv4 or ipv6 src and dst");
a1165b59 SH	300	ret = -EINVAL;
a1165b59 SH	301	goto err_out;
d0f6dd8a AV	302	}
	303
	304	if (!metadata) {
9d7298cd	305	NL_SET_ERR_MSG(extack, "Cannot allocate tunnel metadata dst");
a1165b59	306	ret = -ENOMEM;
d0f6dd8a AV	307	goto err_out;
	308	}
	309
0ed5269f SH	310	if (opts_len) {
	311	ret = tunnel_key_opts_set(tb[TCA_TUNNEL_KEY_ENC_OPTS],
	312	&metadata->u.tun_info,
	313	opts_len, extack);
	314	if (ret < 0)
	315	goto err_out;
	316	}
	317
d0f6dd8a AV	318	metadata->u.tun_info.mode \|= IP_TUNNEL_INFO_TX;
	319	break;
	320	default:
9d7298cd	321	NL_SET_ERR_MSG(extack, "Unknown tunnel key action");
51d4740f	322	ret = -EINVAL;
d0f6dd8a AV	323	goto err_out;
	324	}
	325
	326	if (!exists) {
65a206c0 CM	327	ret = tcf_idr_create(tn, parm->index, est, a,
65a206c0 CM	328	&act_tunnel_key_ops, bind, true);
9d7298cd SH	329	if (ret) {
9d7298cd SH	330	NL_SET_ERR_MSG(extack, "Cannot create TC IDR");
0190c1d4	331	goto err_out;
9d7298cd	332	}
d0f6dd8a AV	333
d0f6dd8a AV	334	ret = ACT_P_CREATED;
4e8ddd7f	335	} else if (!ovr) {
65a206c0	336	tcf_idr_release(*a, bind);
4e8ddd7f VB	337	NL_SET_ERR_MSG(extack, "TC IDR already exists");
4e8ddd7f VB	338	return -EEXIST;
d0f6dd8a AV	339	}
	340
	341	t = to_tunnel_key(*a);
	342
	343	ASSERT_RTNL();
	344	params_new = kzalloc(sizeof(*params_new), GFP_KERNEL);
	345	if (unlikely(!params_new)) {
4e8ddd7f	346	tcf_idr_release(*a, bind);
9d7298cd	347	NL_SET_ERR_MSG(extack, "Cannot allocate tunnel key parameters");
d0f6dd8a AV	348	return -ENOMEM;
	349	}
	350
	351	params_old = rtnl_dereference(t->params);
	352
	353	params_new->action = parm->action;
	354	params_new->tcft_action = parm->t_action;
	355	params_new->tcft_enc_metadata = metadata;
	356
	357	rcu_assign_pointer(t->params, params_new);
	358
	359	if (params_old)
	360	kfree_rcu(params_old, rcu);
	361
	362	if (ret == ACT_P_CREATED)
65a206c0	363	tcf_idr_insert(tn, *a);
d0f6dd8a AV	364
	365	return ret;
	366
	367	err_out:
	368	if (exists)
65a206c0	369	tcf_idr_release(*a, bind);
0190c1d4 VB	370	else
0190c1d4 VB	371	tcf_idr_cleanup(tn, parm->index);
d0f6dd8a AV	372	return ret;
	373	}
	374
9a63b255	375	static void tunnel_key_release(struct tc_action *a)
d0f6dd8a AV	376	{
	377	struct tcf_tunnel_key *t = to_tunnel_key(a);
	378	struct tcf_tunnel_key_params *params;
	379
07c0f09e	380	params = rcu_dereference_protected(t->params, 1);
abdadd3c DC	381	if (params) {
	382	if (params->tcft_action == TCA_TUNNEL_KEY_ACT_SET)
	383	dst_release(&params->tcft_enc_metadata->dst);
d0f6dd8a	384
abdadd3c DC	385	kfree_rcu(params, rcu);
abdadd3c DC	386	}
d0f6dd8a AV	387	}
d0f6dd8a AV	388
0ed5269f SH	389	static int tunnel_key_geneve_opts_dump(struct sk_buff *skb,
	390	const struct ip_tunnel_info *info)
	391	{
	392	int len = info->options_len;
	393	u8 src = (u8 )(info + 1);
	394	struct nlattr *start;
	395
	396	start = nla_nest_start(skb, TCA_TUNNEL_KEY_ENC_OPTS_GENEVE);
	397	if (!start)
	398	return -EMSGSIZE;
	399
	400	while (len > 0) {
	401	struct geneve_opt opt = (struct geneve_opt )src;
	402
	403	if (nla_put_be16(skb, TCA_TUNNEL_KEY_ENC_OPT_GENEVE_CLASS,
	404	opt->opt_class) \|\|
	405	nla_put_u8(skb, TCA_TUNNEL_KEY_ENC_OPT_GENEVE_TYPE,
	406	opt->type) \|\|
	407	nla_put(skb, TCA_TUNNEL_KEY_ENC_OPT_GENEVE_DATA,
	408	opt->length * 4, opt + 1))
	409	return -EMSGSIZE;
	410
	411	len -= sizeof(struct geneve_opt) + opt->length * 4;
	412	src += sizeof(struct geneve_opt) + opt->length * 4;
	413	}
	414
	415	nla_nest_end(skb, start);
	416	return 0;
	417	}
	418
	419	static int tunnel_key_opts_dump(struct sk_buff *skb,
	420	const struct ip_tunnel_info *info)
	421	{
	422	struct nlattr *start;
	423	int err;
	424
	425	if (!info->options_len)
	426	return 0;
	427
	428	start = nla_nest_start(skb, TCA_TUNNEL_KEY_ENC_OPTS);
	429	if (!start)
	430	return -EMSGSIZE;
	431
	432	if (info->key.tun_flags & TUNNEL_GENEVE_OPT) {
	433	err = tunnel_key_geneve_opts_dump(skb, info);
	434	if (err)
	435	return err;
	436	} else {
	437	return -EINVAL;
	438	}
	439
	440	nla_nest_end(skb, start);
	441	return 0;
	442	}
	443
d0f6dd8a AV	444	static int tunnel_key_dump_addresses(struct sk_buff *skb,
	445	const struct ip_tunnel_info *info)
	446	{
	447	unsigned short family = ip_tunnel_info_af(info);
	448
	449	if (family == AF_INET) {
	450	__be32 saddr = info->key.u.ipv4.src;
	451	__be32 daddr = info->key.u.ipv4.dst;
	452
	453	if (!nla_put_in_addr(skb, TCA_TUNNEL_KEY_ENC_IPV4_SRC, saddr) &&
	454	!nla_put_in_addr(skb, TCA_TUNNEL_KEY_ENC_IPV4_DST, daddr))
	455	return 0;
	456	}
	457
	458	if (family == AF_INET6) {
	459	const struct in6_addr *saddr6 = &info->key.u.ipv6.src;
	460	const struct in6_addr *daddr6 = &info->key.u.ipv6.dst;
	461
	462	if (!nla_put_in6_addr(skb,
	463	TCA_TUNNEL_KEY_ENC_IPV6_SRC, saddr6) &&
	464	!nla_put_in6_addr(skb,
	465	TCA_TUNNEL_KEY_ENC_IPV6_DST, daddr6))
	466	return 0;
	467	}
	468
	469	return -EINVAL;
	470	}
	471
	472	static int tunnel_key_dump(struct sk_buff skb, struct tc_action a,
	473	int bind, int ref)
	474	{
	475	unsigned char *b = skb_tail_pointer(skb);
	476	struct tcf_tunnel_key *t = to_tunnel_key(a);
	477	struct tcf_tunnel_key_params *params;
	478	struct tc_tunnel_key opt = {
	479	.index = t->tcf_index,
036bb443 VB	480	.refcnt = refcount_read(&t->tcf_refcnt) - ref,
036bb443 VB	481	.bindcnt = atomic_read(&t->tcf_bindcnt) - bind,
d0f6dd8a AV	482	};
d0f6dd8a AV	483	struct tcf_t tm;
d0f6dd8a	484
07c0f09e	485	params = rtnl_dereference(t->params);
d0f6dd8a AV	486
	487	opt.t_action = params->tcft_action;
	488	opt.action = params->action;
	489
	490	if (nla_put(skb, TCA_TUNNEL_KEY_PARMS, sizeof(opt), &opt))
	491	goto nla_put_failure;
	492
	493	if (params->tcft_action == TCA_TUNNEL_KEY_ACT_SET) {
0ed5269f SH	494	struct ip_tunnel_info *info =
	495	&params->tcft_enc_metadata->u.tun_info;
	496	struct ip_tunnel_key *key = &info->key;
d0f6dd8a AV	497	__be32 key_id = tunnel_id_to_key32(key->tun_id);
	498
	499	if (nla_put_be32(skb, TCA_TUNNEL_KEY_ENC_KEY_ID, key_id) \|\|
	500	tunnel_key_dump_addresses(skb,
75bfbca0	501	&params->tcft_enc_metadata->u.tun_info) \|\|
86087e17 JB	502	nla_put_be16(skb, TCA_TUNNEL_KEY_ENC_DST_PORT, key->tp_dst) \|\|
86087e17 JB	503	nla_put_u8(skb, TCA_TUNNEL_KEY_NO_CSUM,
0ed5269f SH	504	!(key->tun_flags & TUNNEL_CSUM)) \|\|
0ed5269f SH	505	tunnel_key_opts_dump(skb, info))
d0f6dd8a AV	506	goto nla_put_failure;
	507	}
	508
	509	tcf_tm_dump(&tm, &t->tcf_tm);
	510	if (nla_put_64bit(skb, TCA_TUNNEL_KEY_TM, sizeof(tm),
	511	&tm, TCA_TUNNEL_KEY_PAD))
	512	goto nla_put_failure;
	513
07c0f09e	514	return skb->len;
d0f6dd8a AV	515
	516	nla_put_failure:
	517	nlmsg_trim(skb, b);
07c0f09e	518	return -1;
d0f6dd8a AV	519	}
	520
	521	static int tunnel_key_walker(struct net net, struct sk_buff skb,
	522	struct netlink_callback *cb, int type,
41780105 AA	523	const struct tc_action_ops *ops,
41780105 AA	524	struct netlink_ext_ack *extack)
d0f6dd8a AV	525	{
	526	struct tc_action_net *tn = net_generic(net, tunnel_key_net_id);
	527
b3620145	528	return tcf_generic_walker(tn, skb, cb, type, ops, extack);
d0f6dd8a AV	529	}
d0f6dd8a AV	530
331a9295 AA	531	static int tunnel_key_search(struct net net, struct tc_action *a, u32 index,
331a9295 AA	532	struct netlink_ext_ack *extack)
d0f6dd8a AV	533	{
	534	struct tc_action_net *tn = net_generic(net, tunnel_key_net_id);
	535
65a206c0	536	return tcf_idr_search(tn, a, index);
d0f6dd8a AV	537	}
d0f6dd8a AV	538
b409074e VB	539	static int tunnel_key_delete(struct net *net, u32 index)
	540	{
	541	struct tc_action_net *tn = net_generic(net, tunnel_key_net_id);
	542
	543	return tcf_idr_delete_index(tn, index);
	544	}
	545
d0f6dd8a AV	546	static struct tc_action_ops act_tunnel_key_ops = {
	547	.kind = "tunnel_key",
	548	.type = TCA_ACT_TUNNEL_KEY,
	549	.owner = THIS_MODULE,
	550	.act = tunnel_key_act,
	551	.dump = tunnel_key_dump,
	552	.init = tunnel_key_init,
	553	.cleanup = tunnel_key_release,
	554	.walk = tunnel_key_walker,
	555	.lookup = tunnel_key_search,
b409074e	556	.delete = tunnel_key_delete,
d0f6dd8a AV	557	.size = sizeof(struct tcf_tunnel_key),
	558	};
	559
	560	static __net_init int tunnel_key_init_net(struct net *net)
	561	{
	562	struct tc_action_net *tn = net_generic(net, tunnel_key_net_id);
	563
c7e460ce	564	return tc_action_net_init(tn, &act_tunnel_key_ops);
d0f6dd8a AV	565	}
d0f6dd8a AV	566
039af9c6	567	static void __net_exit tunnel_key_exit_net(struct list_head *net_list)
d0f6dd8a	568	{
039af9c6	569	tc_action_net_exit(net_list, tunnel_key_net_id);
d0f6dd8a AV	570	}
	571
	572	static struct pernet_operations tunnel_key_net_ops = {
	573	.init = tunnel_key_init_net,
039af9c6	574	.exit_batch = tunnel_key_exit_net,
d0f6dd8a AV	575	.id = &tunnel_key_net_id,
	576	.size = sizeof(struct tc_action_net),
	577	};
	578
	579	static int __init tunnel_key_init_module(void)
	580	{
	581	return tcf_register_action(&act_tunnel_key_ops, &tunnel_key_net_ops);
	582	}
	583
	584	static void __exit tunnel_key_cleanup_module(void)
	585	{
	586	tcf_unregister_action(&act_tunnel_key_ops, &tunnel_key_net_ops);
	587	}
	588
	589	module_init(tunnel_key_init_module);
	590	module_exit(tunnel_key_cleanup_module);
	591
	592	MODULE_AUTHOR("Amir Vadai <amir@vadai.me>");
	593	MODULE_DESCRIPTION("ip tunnel manipulation actions");
	594	MODULE_LICENSE("GPL v2");