blob: bc7efd1867ab4cf5b81680ae60061775b09fdb34 [file] [log] [blame]
rjw1f884582022-01-06 17:20:42 +08001/*
2 * Copyright (c) 2015 Nicira, Inc.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of version 2 of the GNU General Public
6 * License as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
12 */
13
14#ifndef OVS_CONNTRACK_H
15#define OVS_CONNTRACK_H 1
16
17#include "flow.h"
18
19struct ovs_conntrack_info;
20enum ovs_key_attr;
21
22#if IS_ENABLED(CONFIG_NF_CONNTRACK)
23void ovs_ct_init(struct net *);
24void ovs_ct_exit(struct net *);
25bool ovs_ct_verify(struct net *, enum ovs_key_attr attr);
26int ovs_ct_copy_action(struct net *, const struct nlattr *,
27 const struct sw_flow_key *, struct sw_flow_actions **,
28 bool log);
29int ovs_ct_action_to_attr(const struct ovs_conntrack_info *, struct sk_buff *);
30
31int ovs_ct_execute(struct net *, struct sk_buff *, struct sw_flow_key *,
32 const struct ovs_conntrack_info *);
33
34void ovs_ct_fill_key(const struct sk_buff *skb, struct sw_flow_key *key);
35int ovs_ct_put_key(const struct sw_flow_key *swkey,
36 const struct sw_flow_key *output, struct sk_buff *skb);
37void ovs_ct_free_action(const struct nlattr *a);
38
39#define CT_SUPPORTED_MASK (OVS_CS_F_NEW | OVS_CS_F_ESTABLISHED | \
40 OVS_CS_F_RELATED | OVS_CS_F_REPLY_DIR | \
41 OVS_CS_F_INVALID | OVS_CS_F_TRACKED | \
42 OVS_CS_F_SRC_NAT | OVS_CS_F_DST_NAT)
43#else
44#include <linux/errno.h>
45
46static inline void ovs_ct_init(struct net *net) { }
47
48static inline void ovs_ct_exit(struct net *net) { }
49
50static inline bool ovs_ct_verify(struct net *net, int attr)
51{
52 return false;
53}
54
55static inline int ovs_ct_copy_action(struct net *net, const struct nlattr *nla,
56 const struct sw_flow_key *key,
57 struct sw_flow_actions **acts, bool log)
58{
59 return -ENOTSUPP;
60}
61
62static inline int ovs_ct_action_to_attr(const struct ovs_conntrack_info *info,
63 struct sk_buff *skb)
64{
65 return -ENOTSUPP;
66}
67
68static inline int ovs_ct_execute(struct net *net, struct sk_buff *skb,
69 struct sw_flow_key *key,
70 const struct ovs_conntrack_info *info)
71{
72 kfree_skb(skb);
73 return -ENOTSUPP;
74}
75
76static inline void ovs_ct_fill_key(const struct sk_buff *skb,
77 struct sw_flow_key *key)
78{
79 key->ct_state = 0;
80 key->ct_zone = 0;
81 key->ct.mark = 0;
82 memset(&key->ct.labels, 0, sizeof(key->ct.labels));
83 /* Clear 'ct_orig_proto' to mark the non-existence of original
84 * direction key fields.
85 */
86 key->ct_orig_proto = 0;
87}
88
89static inline int ovs_ct_put_key(const struct sw_flow_key *swkey,
90 const struct sw_flow_key *output,
91 struct sk_buff *skb)
92{
93 return 0;
94}
95
96static inline void ovs_ct_free_action(const struct nlattr *a) { }
97
98#define CT_SUPPORTED_MASK 0
99#endif /* CONFIG_NF_CONNTRACK */
100#endif /* ovs_conntrack.h */