[mirror_ubuntu-zesty-kernel.git] / net / openvswitch / conntrack.h

/*
 * 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);

static inline bool ovs_ct_state_supported(u32 state)
{
	return !(state & ~(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));
}
#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 bool ovs_ct_state_supported(u32 state)
{
	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)
{
	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) { }
#endif /* CONFIG_NF_CONNTRACK */
#endif /* ovs_conntrack.h */
Commit	Line	Data
7f8a436e JS	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
f88f69dd	22	#if IS_ENABLED(CONFIG_NF_CONNTRACK)
c2ac6673 JS	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);
7f8a436e JS	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);
6f225952	37
fbccce59	38	static inline bool ovs_ct_state_supported(u32 state)
6f225952 JS	39	{
	40	return !(state & ~(OVS_CS_F_NEW \| OVS_CS_F_ESTABLISHED \|
	41	OVS_CS_F_RELATED \| OVS_CS_F_REPLY_DIR \|
	42	OVS_CS_F_INVALID \| OVS_CS_F_TRACKED));
	43	}
7f8a436e JS	44	#else
	45	#include <linux/errno.h>
	46
c2ac6673 JS	47	static inline void ovs_ct_init(struct net *net) { }
	48
	49	static inline void ovs_ct_exit(struct net *net) { }
	50
	51	static inline bool ovs_ct_verify(struct net *net, int attr)
7f8a436e JS	52	{
	53	return false;
	54	}
	55
fbccce59	56	static inline bool ovs_ct_state_supported(u32 state)
6f225952 JS	57	{
	58	return false;
	59	}
	60
7f8a436e JS	61	static inline int ovs_ct_copy_action(struct net net, const struct nlattr nla,
	62	const struct sw_flow_key *key,
	63	struct sw_flow_actions **acts, bool log)
	64	{
	65	return -ENOTSUPP;
	66	}
	67
	68	static inline int ovs_ct_action_to_attr(const struct ovs_conntrack_info *info,
	69	struct sk_buff *skb)
	70	{
	71	return -ENOTSUPP;
	72	}
	73
	74	static inline int ovs_ct_execute(struct net net, struct sk_buff skb,
	75	struct sw_flow_key *key,
	76	const struct ovs_conntrack_info *info)
	77	{
	78	return -ENOTSUPP;
	79	}
	80
	81	static inline void ovs_ct_fill_key(const struct sk_buff *skb,
	82	struct sw_flow_key *key)
	83	{
	84	key->ct.state = 0;
	85	key->ct.zone = 0;
182e3042	86	key->ct.mark = 0;
33db4125	87	memset(&key->ct.labels, 0, sizeof(key->ct.labels));
7f8a436e JS	88	}
	89
	90	static inline int ovs_ct_put_key(const struct sw_flow_key *key,
	91	struct sk_buff *skb)
	92	{
	93	return 0;
	94	}
	95
	96	static inline void ovs_ct_free_action(const struct nlattr *a) { }
f88f69dd	97	#endif /* CONFIG_NF_CONNTRACK */
7f8a436e	98	#endif /* ovs_conntrack.h */