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1/*
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 *key, struct sk_buff *skb);
36void ovs_ct_free_action(const struct nlattr *a);
37
38#define CT_SUPPORTED_MASK (OVS_CS_F_NEW | OVS_CS_F_ESTABLISHED | \
39 OVS_CS_F_RELATED | OVS_CS_F_REPLY_DIR | \
40 OVS_CS_F_INVALID | OVS_CS_F_TRACKED | \
41 OVS_CS_F_SRC_NAT | OVS_CS_F_DST_NAT)
42#else
43#include <linux/errno.h>
44
45static inline void ovs_ct_init(struct net *net) { }
46
47static inline void ovs_ct_exit(struct net *net) { }
48
49static inline bool ovs_ct_verify(struct net *net, int attr)
50{
51 return false;
52}
53
54static inline int ovs_ct_copy_action(struct net *net, const struct nlattr *nla,
55 const struct sw_flow_key *key,
56 struct sw_flow_actions **acts, bool log)
57{
58 return -ENOTSUPP;
59}
60
61static inline int ovs_ct_action_to_attr(const struct ovs_conntrack_info *info,
62 struct sk_buff *skb)
63{
64 return -ENOTSUPP;
65}
66
67static inline int ovs_ct_execute(struct net *net, struct sk_buff *skb,
68 struct sw_flow_key *key,
69 const struct ovs_conntrack_info *info)
70{
71 kfree_skb(skb);
72 return -ENOTSUPP;
73}
74
75static inline void ovs_ct_fill_key(const struct sk_buff *skb,
76 struct sw_flow_key *key)
77{
78 key->ct.state = 0;
79 key->ct.zone = 0;
80 key->ct.mark = 0;
81 memset(&key->ct.labels, 0, sizeof(key->ct.labels));
82}
83
84static inline int ovs_ct_put_key(const struct sw_flow_key *key,
85 struct sk_buff *skb)
86{
87 return 0;
88}
89
90static inline void ovs_ct_free_action(const struct nlattr *a) { }
91
92#define CT_SUPPORTED_MASK 0
93#endif /* CONFIG_NF_CONNTRACK */
94#endif /* ovs_conntrack.h */
1/*
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 *);
33int ovs_ct_clear(struct sk_buff *skb, struct sw_flow_key *key);
34
35void ovs_ct_fill_key(const struct sk_buff *skb, struct sw_flow_key *key);
36int ovs_ct_put_key(const struct sw_flow_key *swkey,
37 const struct sw_flow_key *output, struct sk_buff *skb);
38void ovs_ct_free_action(const struct nlattr *a);
39
40#define CT_SUPPORTED_MASK (OVS_CS_F_NEW | OVS_CS_F_ESTABLISHED | \
41 OVS_CS_F_RELATED | OVS_CS_F_REPLY_DIR | \
42 OVS_CS_F_INVALID | OVS_CS_F_TRACKED | \
43 OVS_CS_F_SRC_NAT | OVS_CS_F_DST_NAT)
44#else
45#include <linux/errno.h>
46
47static inline void ovs_ct_init(struct net *net) { }
48
49static inline void ovs_ct_exit(struct net *net) { }
50
51static inline bool ovs_ct_verify(struct net *net, int attr)
52{
53 return false;
54}
55
56static inline int ovs_ct_copy_action(struct net *net, const struct nlattr *nla,
57 const struct sw_flow_key *key,
58 struct sw_flow_actions **acts, bool log)
59{
60 return -ENOTSUPP;
61}
62
63static inline int ovs_ct_action_to_attr(const struct ovs_conntrack_info *info,
64 struct sk_buff *skb)
65{
66 return -ENOTSUPP;
67}
68
69static inline int ovs_ct_execute(struct net *net, struct sk_buff *skb,
70 struct sw_flow_key *key,
71 const struct ovs_conntrack_info *info)
72{
73 kfree_skb(skb);
74 return -ENOTSUPP;
75}
76
77static inline int ovs_ct_clear(struct sk_buff *skb,
78 struct sw_flow_key *key)
79{
80 return -ENOTSUPP;
81}
82
83static inline void ovs_ct_fill_key(const struct sk_buff *skb,
84 struct sw_flow_key *key)
85{
86 key->ct_state = 0;
87 key->ct_zone = 0;
88 key->ct.mark = 0;
89 memset(&key->ct.labels, 0, sizeof(key->ct.labels));
90 /* Clear 'ct_orig_proto' to mark the non-existence of original
91 * direction key fields.
92 */
93 key->ct_orig_proto = 0;
94}
95
96static inline int ovs_ct_put_key(const struct sw_flow_key *swkey,
97 const struct sw_flow_key *output,
98 struct sk_buff *skb)
99{
100 return 0;
101}
102
103static inline void ovs_ct_free_action(const struct nlattr *a) { }
104
105#define CT_SUPPORTED_MASK 0
106#endif /* CONFIG_NF_CONNTRACK */
107#endif /* ovs_conntrack.h */