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a94ebc39 JS |
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 <linux/version.h> | |
18 | #include "flow.h" | |
19 | ||
20 | struct ovs_conntrack_info; | |
21 | enum ovs_key_attr; | |
22 | ||
8063e095 | 23 | #if IS_ENABLED(CONFIG_NF_CONNTRACK) |
038e34ab JS |
24 | void ovs_ct_init(struct net *); |
25 | void ovs_ct_exit(struct net *); | |
26 | bool ovs_ct_verify(struct net *, enum ovs_key_attr attr); | |
a94ebc39 JS |
27 | int ovs_ct_copy_action(struct net *, const struct nlattr *, |
28 | const struct sw_flow_key *, struct sw_flow_actions **, | |
29 | bool log); | |
30 | int ovs_ct_action_to_attr(const struct ovs_conntrack_info *, struct sk_buff *); | |
31 | ||
32 | int ovs_ct_execute(struct net *, struct sk_buff *, struct sw_flow_key *, | |
33 | const struct ovs_conntrack_info *); | |
34 | ||
35 | void ovs_ct_fill_key(const struct sk_buff *skb, struct sw_flow_key *key); | |
36 | int ovs_ct_put_key(const struct sw_flow_key *key, struct sk_buff *skb); | |
37 | void ovs_ct_free_action(const struct nlattr *a); | |
c05e2094 JS |
38 | |
39 | #define CT_SUPPORTED_MASK (OVS_CS_F_NEW | OVS_CS_F_ESTABLISHED | \ | |
40 | OVS_CS_F_RELATED | OVS_CS_F_REPLY_DIR | \ | |
f8f97cdc JR |
41 | OVS_CS_F_INVALID | OVS_CS_F_TRACKED | \ |
42 | OVS_CS_F_SRC_NAT | OVS_CS_F_DST_NAT) | |
a94ebc39 JS |
43 | #else |
44 | #include <linux/errno.h> | |
45 | ||
038e34ab JS |
46 | static inline void ovs_ct_init(struct net *net) { } |
47 | ||
48 | static inline void ovs_ct_exit(struct net *net) { } | |
49 | ||
50 | static inline bool ovs_ct_verify(struct net *net, int attr) | |
a94ebc39 JS |
51 | { |
52 | return false; | |
53 | } | |
54 | ||
55 | static 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 | ||
62 | static inline int ovs_ct_action_to_attr(const struct ovs_conntrack_info *info, | |
63 | struct sk_buff *skb) | |
64 | { | |
65 | return -ENOTSUPP; | |
66 | } | |
67 | ||
68 | static 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 | { | |
c05e2094 | 72 | kfree_skb(skb); |
a94ebc39 JS |
73 | return -ENOTSUPP; |
74 | } | |
75 | ||
76 | static 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; | |
372ce973 | 81 | key->ct.mark = 0; |
c05e2094 | 82 | memset(&key->ct.labels, 0, sizeof(key->ct.labels)); |
a94ebc39 JS |
83 | } |
84 | ||
85 | static inline int ovs_ct_put_key(const struct sw_flow_key *key, | |
86 | struct sk_buff *skb) | |
87 | { | |
88 | return 0; | |
89 | } | |
90 | ||
91 | static inline void ovs_ct_free_action(const struct nlattr *a) { } | |
c05e2094 JS |
92 | |
93 | #define CT_SUPPORTED_MASK 0 | |
a94ebc39 JS |
94 | #endif |
95 | #endif /* ovs_conntrack.h */ |