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 | |
14 | struct tcf_tunnel_key_params { |
15 | struct rcu_head rcu; |
16 | int tcft_action; |
17 | struct metadata_dst *tcft_enc_metadata; |
18 | }; |
19 | |
20 | struct 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 | |
27 | static 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 | |
41 | static 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 | |
55 | static 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; |
60 | |
61 | params = rcu_dereference_protected(t->params, |
62 | lockdep_is_held(&a->tcfa_lock)); |
63 | |
64 | return ¶ms->tcft_enc_metadata->u.tun_info; |
65 | #else |
66 | return NULL; |
67 | #endif |
68 | } |
69 | |
70 | static inline struct ip_tunnel_info * |
71 | tcf_tunnel_info_copy(const struct tc_action *a) |
72 | { |
73 | #ifdef CONFIG_NET_CLS_ACT |
74 | struct ip_tunnel_info *tun = tcf_tunnel_info(a); |
75 | |
76 | if (tun) { |
77 | size_t tun_size = sizeof(*tun) + tun->options_len; |
78 | struct ip_tunnel_info *tun_copy = kmemdup(p: tun, size: tun_size, |
79 | GFP_ATOMIC); |
80 | |
81 | return tun_copy; |
82 | } |
83 | #endif |
84 | return NULL; |
85 | } |
86 | #endif /* __NET_TC_TUNNEL_KEY_H */ |
87 |