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Merge tag 'for-5.4/io_uring-2019-09-27' of git://git.kernel.dk/linux-block
[linux.git] / include / net / tc_act / tc_tunnel_key.h
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 = 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
39 static 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
51 static 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
63 static inline struct ip_tunnel_info *
64 tcf_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 */