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 19 struct ovs_conntrack_info; 20 enum ovs_key_attr; 21 22 #if IS_ENABLED(CONFIG_NF_CONNTRACK) 23 void ovs_ct_init(struct net *); 24 void ovs_ct_exit(struct net *); 25 bool ovs_ct_verify(struct net *, enum ovs_key_attr attr); 26 int ovs_ct_copy_action(struct net *, const struct nlattr *, 27 const struct sw_flow_key *, struct sw_flow_actions **, 28 bool log); 29 int ovs_ct_action_to_attr(const struct ovs_conntrack_info *, struct sk_buff *); 30 31 int ovs_ct_execute(struct net *, struct sk_buff *, struct sw_flow_key *, 32 const struct ovs_conntrack_info *); 33 34 void ovs_ct_fill_key(const struct sk_buff *skb, struct sw_flow_key *key); 35 int ovs_ct_put_key(const struct sw_flow_key *key, struct sk_buff *skb); 36 void ovs_ct_free_action(const struct nlattr *a); 37 #else 38 #include <linux/errno.h> 39 40 static inline void ovs_ct_init(struct net *net) { } 41 42 static inline void ovs_ct_exit(struct net *net) { } 43 44 static inline bool ovs_ct_verify(struct net *net, int attr) 45 { 46 return false; 47 } 48 49 static inline int ovs_ct_copy_action(struct net *net, const struct nlattr *nla, 50 const struct sw_flow_key *key, 51 struct sw_flow_actions **acts, bool log) 52 { 53 return -ENOTSUPP; 54 } 55 56 static inline int ovs_ct_action_to_attr(const struct ovs_conntrack_info *info, 57 struct sk_buff *skb) 58 { 59 return -ENOTSUPP; 60 } 61 62 static inline int ovs_ct_execute(struct net *net, struct sk_buff *skb, 63 struct sw_flow_key *key, 64 const struct ovs_conntrack_info *info) 65 { 66 return -ENOTSUPP; 67 } 68 69 static inline void ovs_ct_fill_key(const struct sk_buff *skb, 70 struct sw_flow_key *key) 71 { 72 key->ct.state = 0; 73 key->ct.zone = 0; 74 key->ct.mark = 0; 75 memset(&key->ct.label, 0, sizeof(key->ct.label)); 76 } 77 78 static inline int ovs_ct_put_key(const struct sw_flow_key *key, 79 struct sk_buff *skb) 80 { 81 return 0; 82 } 83 84 static inline void ovs_ct_free_action(const struct nlattr *a) { } 85 #endif /* CONFIG_NF_CONNTRACK */ 86 #endif /* ovs_conntrack.h */ 87