1/* SPDX-License-Identifier: GPL-2.0-or-later */
 2/*
 3 * Copyright (c) 2016, Amir Vadai <amir@vadai.me>
 4 * Copyright (c) 2016, Mellanox Technologies. All rights reserved.
 5 */
 6
 7#ifndef __NET_TC_TUNNEL_KEY_H
 8#define __NET_TC_TUNNEL_KEY_H
 9
10#include <net/act_api.h>
11#include <linux/tc_act/tc_tunnel_key.h>
12#include <net/dst_metadata.h>
13
14struct tcf_tunnel_key_params {
15	struct rcu_head		rcu;
16	int			tcft_action;
17	struct metadata_dst     *tcft_enc_metadata;
18};
19
20struct tcf_tunnel_key {
21	struct tc_action	      common;
22	struct tcf_tunnel_key_params __rcu *params;
23};
24
25#define to_tunnel_key(a) ((struct tcf_tunnel_key *)a)
26
27static inline bool is_tcf_tunnel_set(const struct tc_action *a)
28{
29#ifdef CONFIG_NET_CLS_ACT
30	struct tcf_tunnel_key *t = to_tunnel_key(a);
31	struct tcf_tunnel_key_params *params = rtnl_dereference(t->params);
32
33	if (a->ops && a->ops->id == TCA_ID_TUNNEL_KEY)
34		return params->tcft_action == TCA_TUNNEL_KEY_ACT_SET;
35#endif
36	return false;
37}
38
39static inline bool is_tcf_tunnel_release(const struct tc_action *a)
40{
41#ifdef CONFIG_NET_CLS_ACT
42	struct tcf_tunnel_key *t = to_tunnel_key(a);
43	struct tcf_tunnel_key_params *params = rtnl_dereference(t->params);
44
45	if (a->ops && a->ops->id == TCA_ID_TUNNEL_KEY)
46		return params->tcft_action == TCA_TUNNEL_KEY_ACT_RELEASE;
47#endif
48	return false;
49}
50
51static inline struct ip_tunnel_info *tcf_tunnel_info(const struct tc_action *a)
52{
53#ifdef CONFIG_NET_CLS_ACT
54	struct tcf_tunnel_key *t = to_tunnel_key(a);
55	struct tcf_tunnel_key_params *params = rtnl_dereference(t->params);
56
57	return &params->tcft_enc_metadata->u.tun_info;
58#else
59	return NULL;
60#endif
61}
62
63static inline struct ip_tunnel_info *
64tcf_tunnel_info_copy(const struct tc_action *a)
65{
66#ifdef CONFIG_NET_CLS_ACT
67	struct ip_tunnel_info *tun = tcf_tunnel_info(a);
68
69	if (tun) {
70		size_t tun_size = sizeof(*tun) + tun->options_len;
71		struct ip_tunnel_info *tun_copy = kmemdup(tun, tun_size,
72							  GFP_KERNEL);
73
74		return tun_copy;
75	}
76#endif
77	return NULL;
78}
79#endif /* __NET_TC_TUNNEL_KEY_H */