2 * Copyright (c) 2015 Nicira, Inc.
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.
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.
14 #ifndef OVS_CONNTRACK_H
15 #define OVS_CONNTRACK_H 1
19 struct ovs_conntrack_info;
20 struct ovs_ct_limit_info;
23 #if IS_ENABLED(CONFIG_NF_CONNTRACK)
24 int ovs_ct_init(struct net *);
25 void ovs_ct_exit(struct net *);
26 bool ovs_ct_verify(struct net *, enum ovs_key_attr attr);
27 int ovs_ct_copy_action(struct net *, const struct nlattr *,
28 const struct sw_flow_key *, struct sw_flow_actions **,
30 int ovs_ct_action_to_attr(const struct ovs_conntrack_info *, struct sk_buff *);
32 int ovs_ct_execute(struct net *, struct sk_buff *, struct sw_flow_key *,
33 const struct ovs_conntrack_info *);
34 int ovs_ct_clear(struct sk_buff *skb, struct sw_flow_key *key);
36 void ovs_ct_fill_key(const struct sk_buff *skb, struct sw_flow_key *key);
37 int ovs_ct_put_key(const struct sw_flow_key *swkey,
38 const struct sw_flow_key *output, struct sk_buff *skb);
39 void ovs_ct_free_action(const struct nlattr *a);
41 #define CT_SUPPORTED_MASK (OVS_CS_F_NEW | OVS_CS_F_ESTABLISHED | \
42 OVS_CS_F_RELATED | OVS_CS_F_REPLY_DIR | \
43 OVS_CS_F_INVALID | OVS_CS_F_TRACKED | \
44 OVS_CS_F_SRC_NAT | OVS_CS_F_DST_NAT)
46 #include <linux/errno.h>
48 static inline int ovs_ct_init(struct net *net) { return 0; }
50 static inline void ovs_ct_exit(struct net *net) { }
52 static inline bool ovs_ct_verify(struct net *net, int attr)
57 static inline int ovs_ct_copy_action(struct net *net, const struct nlattr *nla,
58 const struct sw_flow_key *key,
59 struct sw_flow_actions **acts, bool log)
64 static inline int ovs_ct_action_to_attr(const struct ovs_conntrack_info *info,
70 static inline int ovs_ct_execute(struct net *net, struct sk_buff *skb,
71 struct sw_flow_key *key,
72 const struct ovs_conntrack_info *info)
78 static inline int ovs_ct_clear(struct sk_buff *skb,
79 struct sw_flow_key *key)
84 static inline void ovs_ct_fill_key(const struct sk_buff *skb,
85 struct sw_flow_key *key)
90 memset(&key->ct.labels, 0, sizeof(key->ct.labels));
91 /* Clear 'ct_orig_proto' to mark the non-existence of original
92 * direction key fields.
94 key->ct_orig_proto = 0;
97 static inline int ovs_ct_put_key(const struct sw_flow_key *swkey,
98 const struct sw_flow_key *output,
104 static inline void ovs_ct_free_action(const struct nlattr *a) { }
106 #define CT_SUPPORTED_MASK 0
107 #endif /* CONFIG_NF_CONNTRACK */
109 #if IS_ENABLED(CONFIG_NETFILTER_CONNCOUNT)
110 extern struct genl_family dp_ct_limit_genl_family;
112 #endif /* ovs_conntrack.h */