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Linux kernel mirror (for testing)
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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;
32
33 params = rcu_dereference_protected(t->params,
34 lockdep_is_held(&a->tcfa_lock));
35 if (a->ops && a->ops->id == TCA_ID_TUNNEL_KEY)
36 return params->tcft_action == TCA_TUNNEL_KEY_ACT_SET;
37#endif
38 return false;
39}
40
41static inline bool is_tcf_tunnel_release(const struct tc_action *a)
42{
43#ifdef CONFIG_NET_CLS_ACT
44 struct tcf_tunnel_key *t = to_tunnel_key(a);
45 struct tcf_tunnel_key_params *params;
46
47 params = rcu_dereference_protected(t->params,
48 lockdep_is_held(&a->tcfa_lock));
49 if (a->ops && a->ops->id == TCA_ID_TUNNEL_KEY)
50 return params->tcft_action == TCA_TUNNEL_KEY_ACT_RELEASE;
51#endif
52 return false;
53}
54
55static inline struct ip_tunnel_info *tcf_tunnel_info(const struct tc_action *a)
56{
57#ifdef CONFIG_NET_CLS_ACT
58 struct tcf_tunnel_key *t = to_tunnel_key(a);
59 struct tcf_tunnel_key_params *params = rtnl_dereference(t->params);
60
61 return ¶ms->tcft_enc_metadata->u.tun_info;
62#else
63 return NULL;
64#endif
65}
66
67static inline struct ip_tunnel_info *
68tcf_tunnel_info_copy(const struct tc_action *a)
69{
70#ifdef CONFIG_NET_CLS_ACT
71 struct ip_tunnel_info *tun = tcf_tunnel_info(a);
72
73 if (tun) {
74 size_t tun_size = sizeof(*tun) + tun->options_len;
75 struct ip_tunnel_info *tun_copy = kmemdup(tun, tun_size,
76 GFP_ATOMIC);
77
78 return tun_copy;
79 }
80#endif
81 return NULL;
82}
83#endif /* __NET_TC_TUNNEL_KEY_H */