/* * Copyright (c) 2015 Nicira, Inc. * * This program is free software; you can redistribute it and/or * modify it under the terms of version 2 of the GNU General Public * License as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. */ #ifndef OVS_CONNTRACK_H #define OVS_CONNTRACK_H 1 #include "flow.h" struct ovs_conntrack_info; enum ovs_key_attr; #if IS_ENABLED(CONFIG_NF_CONNTRACK) void ovs_ct_init(struct net *); void ovs_ct_exit(struct net *); bool ovs_ct_verify(struct net *, enum ovs_key_attr attr); int ovs_ct_copy_action(struct net *, const struct nlattr *, const struct sw_flow_key *, struct sw_flow_actions **, bool log); int ovs_ct_action_to_attr(const struct ovs_conntrack_info *, struct sk_buff *); int ovs_ct_execute(struct net *, struct sk_buff *, struct sw_flow_key *, const struct ovs_conntrack_info *); void ovs_ct_fill_key(const struct sk_buff *skb, struct sw_flow_key *key); int ovs_ct_put_key(const struct sw_flow_key *key, struct sk_buff *skb); void ovs_ct_free_action(const struct nlattr *a); #define CT_SUPPORTED_MASK (OVS_CS_F_NEW | OVS_CS_F_ESTABLISHED | \ OVS_CS_F_RELATED | OVS_CS_F_REPLY_DIR | \ OVS_CS_F_INVALID | OVS_CS_F_TRACKED | \ OVS_CS_F_SRC_NAT | OVS_CS_F_DST_NAT) #else #include <linux/errno.h> static inline void ovs_ct_init(struct net *net) { } static inline void ovs_ct_exit(struct net *net) { } static inline bool ovs_ct_verify(struct net *net, int attr) { return false; } static inline int ovs_ct_copy_action(struct net *net, const struct nlattr *nla, const struct sw_flow_key *key, struct sw_flow_actions **acts, bool log) { return -ENOTSUPP; } static inline int ovs_ct_action_to_attr(const struct ovs_conntrack_info *info, struct sk_buff *skb) { return -ENOTSUPP; } static inline int ovs_ct_execute(struct net *net, struct sk_buff *skb, struct sw_flow_key *key, const struct ovs_conntrack_info *info) { kfree_skb(skb); return -ENOTSUPP; } static inline void ovs_ct_fill_key(const struct sk_buff *skb, struct sw_flow_key *key) { key->ct.state = 0; key->ct.zone = 0; key->ct.mark = 0; memset(&key->ct.labels, 0, sizeof(key->ct.labels)); } static inline int ovs_ct_put_key(const struct sw_flow_key *key, struct sk_buff *skb) { return 0; } static inline void ovs_ct_free_action(const struct nlattr *a) { } #define CT_SUPPORTED_MASK 0 #endif /* CONFIG_NF_CONNTRACK */ #endif /* ovs_conntrack.h */