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/*
* 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;
struct ovs_ct_limit_info;
enum ovs_key_attr;
#if IS_ENABLED(CONFIG_NF_CONNTRACK)
int 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 *);
int ovs_ct_clear(struct sk_buff *skb, struct sw_flow_key *key);
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 *swkey,
const struct sw_flow_key *output, 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 int ovs_ct_init(struct net *net) { return 0; }
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 int ovs_ct_clear(struct sk_buff *skb,
struct sw_flow_key *key)
{
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));
/* Clear 'ct_orig_proto' to mark the non-existence of original
* direction key fields.
*/
key->ct_orig_proto = 0;
}
static inline int ovs_ct_put_key(const struct sw_flow_key *swkey,
const struct sw_flow_key *output,
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 */
#if IS_ENABLED(CONFIG_NETFILTER_CONNCOUNT)
extern struct genl_family dp_ct_limit_genl_family;
#endif
#endif /* ovs_conntrack.h */
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