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 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 45 static inline void ovs_ct_init(struct net *net) { } 46 47 static inline void ovs_ct_exit(struct net *net) { } 48 49 static inline bool ovs_ct_verify(struct net *net, int attr) 50 { 51 return false; 52 } 53 54 static 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 61 static inline int ovs_ct_action_to_attr(const struct ovs_conntrack_info *info, 62 struct sk_buff *skb) 63 { 64 return -ENOTSUPP; 65 } 66 67 static 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 75 static 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 84 static inline int ovs_ct_put_key(const struct sw_flow_key *key, 85 struct sk_buff *skb) 86 { 87 return 0; 88 } 89 90 static 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 */ 95