projects/linux·blob master · refs

108 lines · 2.9 KiB

1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright (c) 2015 Nicira, Inc.
4 */
5
6#ifndef OVS_CONNTRACK_H
7#define OVS_CONNTRACK_H 1
8
9#include "flow.h"
10
11struct ovs_conntrack_info;
12struct ovs_ct_limit_info;
13enum ovs_key_attr;
14
15#if IS_ENABLED(CONFIG_NF_CONNTRACK)
16int ovs_ct_init(struct net *);
17void ovs_ct_exit_start(struct net *net);
18void ovs_ct_exit_finish(struct net *net);
19bool ovs_ct_verify(struct net *, enum ovs_key_attr attr);
20int ovs_ct_copy_action(struct net *, const struct nlattr *,
21 const struct sw_flow_key *, struct sw_flow_actions **,
22 bool log);
23int ovs_ct_action_to_attr(const struct ovs_conntrack_info *, struct sk_buff *);
24
25int ovs_ct_execute(struct net *, struct sk_buff *, struct sw_flow_key *,
26 const struct ovs_conntrack_info *);
27int ovs_ct_clear(struct sk_buff *skb, struct sw_flow_key *key);
28
29void ovs_ct_fill_key(const struct sk_buff *skb, struct sw_flow_key *key,
30 bool post_ct);
31int ovs_ct_put_key(const struct sw_flow_key *swkey,
32 const struct sw_flow_key *output, struct sk_buff *skb);
33void ovs_ct_free_action(const struct nlattr *a);
34
35#define CT_SUPPORTED_MASK (OVS_CS_F_NEW | OVS_CS_F_ESTABLISHED | \
36 OVS_CS_F_RELATED | OVS_CS_F_REPLY_DIR | \
37 OVS_CS_F_INVALID | OVS_CS_F_TRACKED | \
38 OVS_CS_F_SRC_NAT | OVS_CS_F_DST_NAT)
39#else
40#include <linux/errno.h>
41
42static inline int ovs_ct_init(struct net *net) { return 0; }
43
44static inline void ovs_ct_exit_start(struct net *net) { }
45static inline void ovs_ct_exit_finish(struct net *net) { }
46
47static inline bool ovs_ct_verify(struct net *net, int attr)
48{
49 return false;
50}
51
52static inline int ovs_ct_copy_action(struct net *net, const struct nlattr *nla,
53 const struct sw_flow_key *key,
54 struct sw_flow_actions **acts, bool log)
55{
56 return -ENOTSUPP;
57}
58
59static inline int ovs_ct_action_to_attr(const struct ovs_conntrack_info *info,
60 struct sk_buff *skb)
61{
62 return -ENOTSUPP;
63}
64
65static inline int ovs_ct_execute(struct net *net, struct sk_buff *skb,
66 struct sw_flow_key *key,
67 const struct ovs_conntrack_info *info)
68{
69 kfree_skb(skb);
70 return -ENOTSUPP;
71}
72
73static inline int ovs_ct_clear(struct sk_buff *skb,
74 struct sw_flow_key *key)
75{
76 return -ENOTSUPP;
77}
78
79static inline void ovs_ct_fill_key(const struct sk_buff *skb,
80 struct sw_flow_key *key,
81 bool post_ct)
82{
83 key->ct_state = 0;
84 key->ct_zone = 0;
85 key->ct.mark = 0;
86 memset(&key->ct.labels, 0, sizeof(key->ct.labels));
87 /* Clear 'ct_orig_proto' to mark the non-existence of original
88 * direction key fields.
89 */
90 key->ct_orig_proto = 0;
91}
92
93static inline int ovs_ct_put_key(const struct sw_flow_key *swkey,
94 const struct sw_flow_key *output,
95 struct sk_buff *skb)
96{
97 return 0;
98}
99
100static inline void ovs_ct_free_action(const struct nlattr *a) { }
101
102#define CT_SUPPORTED_MASK 0
103#endif /* CONFIG_NF_CONNTRACK */
104
105#if IS_ENABLED(CONFIG_NETFILTER_CONNCOUNT)
106extern struct genl_family dp_ct_limit_genl_family;
107#endif
108#endif /* ovs_conntrack.h */