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 11 struct ovs_conntrack_info; 12 struct ovs_ct_limit_info; 13 enum ovs_key_attr; 14 15 #if IS_ENABLED(CONFIG_NF_CONNTRACK) 16 int ovs_ct_init(struct net *); 17 void ovs_ct_exit(struct net *); 18 bool ovs_ct_verify(struct net *, enum ovs_key_attr attr); 19 int ovs_ct_copy_action(struct net *, const struct nlattr *, 20 const struct sw_flow_key *, struct sw_flow_actions **, 21 bool log); 22 int ovs_ct_action_to_attr(const struct ovs_conntrack_info *, struct sk_buff *); 23 24 int ovs_ct_execute(struct net *, struct sk_buff *, struct sw_flow_key *, 25 const struct ovs_conntrack_info *); 26 int ovs_ct_clear(struct sk_buff *skb, struct sw_flow_key *key); 27 28 void ovs_ct_fill_key(const struct sk_buff *skb, struct sw_flow_key *key); 29 int ovs_ct_put_key(const struct sw_flow_key *swkey, 30 const struct sw_flow_key *output, struct sk_buff *skb); 31 void ovs_ct_free_action(const struct nlattr *a); 32 33 #define CT_SUPPORTED_MASK (OVS_CS_F_NEW | OVS_CS_F_ESTABLISHED | \ 34 OVS_CS_F_RELATED | OVS_CS_F_REPLY_DIR | \ 35 OVS_CS_F_INVALID | OVS_CS_F_TRACKED | \ 36 OVS_CS_F_SRC_NAT | OVS_CS_F_DST_NAT) 37 #else 38 #include <linux/errno.h> 39 40 static inline int ovs_ct_init(struct net *net) { return 0; } 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 kfree_skb(skb); 67 return -ENOTSUPP; 68 } 69 70 static inline int ovs_ct_clear(struct sk_buff *skb, 71 struct sw_flow_key *key) 72 { 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; 81 key->ct.mark = 0; 82 memset(&key->ct.labels, 0, sizeof(key->ct.labels)); 83 /* Clear 'ct_orig_proto' to mark the non-existence of original 84 * direction key fields. 85 */ 86 key->ct_orig_proto = 0; 87 } 88 89 static inline int ovs_ct_put_key(const struct sw_flow_key *swkey, 90 const struct sw_flow_key *output, 91 struct sk_buff *skb) 92 { 93 return 0; 94 } 95 96 static inline void ovs_ct_free_action(const struct nlattr *a) { } 97 98 #define CT_SUPPORTED_MASK 0 99 #endif /* CONFIG_NF_CONNTRACK */ 100 101 #if IS_ENABLED(CONFIG_NETFILTER_CONNCOUNT) 102 extern struct genl_family dp_ct_limit_genl_family; 103 #endif 104 #endif /* ovs_conntrack.h */ 105