[mirror_ubuntu-jammy-kernel.git] / include / linux / xfrm.h

#ifndef _LINUX_XFRM_H
#define _LINUX_XFRM_H

#include <linux/types.h>

/* All of the structures in this file may not change size as they are
 * passed into the kernel from userspace via netlink sockets.
 */

/* Structure to encapsulate addresses. I do not want to use
 * "standard" structure. My apologies.
 */
typedef union
{
	__u32		a4;
	__u32		a6[4];
} xfrm_address_t;

/* Ident of a specific xfrm_state. It is used on input to lookup
 * the state by (spi,daddr,ah/esp) or to store information about
 * spi, protocol and tunnel address on output.
 */
struct xfrm_id
{
	xfrm_address_t	daddr;
	__u32		spi;
	__u8		proto;
};

/* Selector, used as selector both on policy rules (SPD) and SAs. */

struct xfrm_selector
{
	xfrm_address_t	daddr;
	xfrm_address_t	saddr;
	__u16	dport;
	__u16	dport_mask;
	__u16	sport;
	__u16	sport_mask;
	__u16	family;
	__u8	prefixlen_d;
	__u8	prefixlen_s;
	__u8	proto;
	int	ifindex;
	uid_t	user;
};

#define XFRM_INF (~(__u64)0)

struct xfrm_lifetime_cfg
{
	__u64	soft_byte_limit;
	__u64	hard_byte_limit;
	__u64	soft_packet_limit;
	__u64	hard_packet_limit;
	__u64	soft_add_expires_seconds;
	__u64	hard_add_expires_seconds;
	__u64	soft_use_expires_seconds;
	__u64	hard_use_expires_seconds;
};

struct xfrm_lifetime_cur
{
	__u64	bytes;
	__u64	packets;
	__u64	add_time;
	__u64	use_time;
};

struct xfrm_replay_state
{
	__u32	oseq;
	__u32	seq;
	__u32	bitmap;
};

struct xfrm_algo {
	char	alg_name[64];
	int	alg_key_len;    /* in bits */
	char	alg_key[0];
};

struct xfrm_stats {
	__u32	replay_window;
	__u32	replay;
	__u32	integrity_failed;
};

enum
{
	XFRM_POLICY_IN	= 0,
	XFRM_POLICY_OUT	= 1,
	XFRM_POLICY_FWD	= 2,
	XFRM_POLICY_MAX	= 3
};

enum
{
	XFRM_SHARE_ANY,		/* No limitations */
	XFRM_SHARE_SESSION,	/* For this session only */
	XFRM_SHARE_USER,	/* For this user only */
	XFRM_SHARE_UNIQUE	/* Use once */
};

/* Netlink configuration messages.  */
enum {
	XFRM_MSG_BASE = 0x10,

	XFRM_MSG_NEWSA = 0x10,
#define XFRM_MSG_NEWSA XFRM_MSG_NEWSA
	XFRM_MSG_DELSA,
#define XFRM_MSG_DELSA XFRM_MSG_DELSA
	XFRM_MSG_GETSA,
#define XFRM_MSG_GETSA XFRM_MSG_GETSA

	XFRM_MSG_NEWPOLICY,
#define XFRM_MSG_NEWPOLICY XFRM_MSG_NEWPOLICY
	XFRM_MSG_DELPOLICY,
#define XFRM_MSG_DELPOLICY XFRM_MSG_DELPOLICY
	XFRM_MSG_GETPOLICY,
#define XFRM_MSG_GETPOLICY XFRM_MSG_GETPOLICY

	XFRM_MSG_ALLOCSPI,
#define XFRM_MSG_ALLOCSPI XFRM_MSG_ALLOCSPI
	XFRM_MSG_ACQUIRE,
#define XFRM_MSG_ACQUIRE XFRM_MSG_ACQUIRE
	XFRM_MSG_EXPIRE,
#define XFRM_MSG_EXPIRE XFRM_MSG_EXPIRE

	XFRM_MSG_UPDPOLICY,
#define XFRM_MSG_UPDPOLICY XFRM_MSG_UPDPOLICY
	XFRM_MSG_UPDSA,
#define XFRM_MSG_UPDSA XFRM_MSG_UPDSA

	XFRM_MSG_POLEXPIRE,
#define XFRM_MSG_POLEXPIRE XFRM_MSG_POLEXPIRE

	XFRM_MSG_FLUSHSA,
#define XFRM_MSG_FLUSHSA XFRM_MSG_FLUSHSA
	XFRM_MSG_FLUSHPOLICY,
#define XFRM_MSG_FLUSHPOLICY XFRM_MSG_FLUSHPOLICY

	__XFRM_MSG_MAX
};
#define XFRM_MSG_MAX (__XFRM_MSG_MAX - 1)

struct xfrm_user_tmpl {
	struct xfrm_id		id;
	__u16			family;
	xfrm_address_t		saddr;
	__u32			reqid;
	__u8			mode;
	__u8			share;
	__u8			optional;
	__u32			aalgos;
	__u32			ealgos;
	__u32			calgos;
};

struct xfrm_encap_tmpl {
	__u16		encap_type;
	__u16		encap_sport;
	__u16		encap_dport;
	xfrm_address_t	encap_oa;
};

/* Netlink message attributes.  */
enum xfrm_attr_type_t {
	XFRMA_UNSPEC,
	XFRMA_ALG_AUTH,		/* struct xfrm_algo */
	XFRMA_ALG_CRYPT,	/* struct xfrm_algo */
	XFRMA_ALG_COMP,		/* struct xfrm_algo */
	XFRMA_ENCAP,		/* struct xfrm_algo + struct xfrm_encap_tmpl */
	XFRMA_TMPL,		/* 1 or more struct xfrm_user_tmpl */
	__XFRMA_MAX

#define XFRMA_MAX (__XFRMA_MAX - 1)
};

struct xfrm_usersa_info {
	struct xfrm_selector		sel;
	struct xfrm_id			id;
	xfrm_address_t			saddr;
	struct xfrm_lifetime_cfg	lft;
	struct xfrm_lifetime_cur	curlft;
	struct xfrm_stats		stats;
	__u32				seq;
	__u32				reqid;
	__u16				family;
	__u8				mode; /* 0=transport,1=tunnel */
	__u8				replay_window;
	__u8				flags;
#define XFRM_STATE_NOECN	1
#define XFRM_STATE_DECAP_DSCP	2
};

struct xfrm_usersa_id {
	xfrm_address_t			daddr;
	__u32				spi;
	__u16				family;
	__u8				proto;
};

struct xfrm_userspi_info {
	struct xfrm_usersa_info		info;
	__u32				min;
	__u32				max;
};

struct xfrm_userpolicy_info {
	struct xfrm_selector		sel;
	struct xfrm_lifetime_cfg	lft;
	struct xfrm_lifetime_cur	curlft;
	__u32				priority;
	__u32				index;
	__u8				dir;
	__u8				action;
#define XFRM_POLICY_ALLOW	0
#define XFRM_POLICY_BLOCK	1
	__u8				flags;
#define XFRM_POLICY_LOCALOK	1	/* Allow user to override global policy */
	__u8				share;
};

struct xfrm_userpolicy_id {
	struct xfrm_selector		sel;
	__u32				index;
	__u8				dir;
};

struct xfrm_user_acquire {
	struct xfrm_id			id;
	xfrm_address_t			saddr;
	struct xfrm_selector		sel;
	struct xfrm_userpolicy_info	policy;
	__u32				aalgos;
	__u32				ealgos;
	__u32				calgos;
	__u32				seq;
};

struct xfrm_user_expire {
	struct xfrm_usersa_info		state;
	__u8				hard;
};

struct xfrm_user_polexpire {
	struct xfrm_userpolicy_info	pol;
	__u8				hard;
};

struct xfrm_usersa_flush {
	__u8				proto;
};

#define XFRMGRP_ACQUIRE		1
#define XFRMGRP_EXPIRE		2

#endif /* _LINUX_XFRM_H */
Commit	Line	Data
1da177e4 LT	1	#ifndef _LINUX_XFRM_H
	2	#define _LINUX_XFRM_H
	3
	4	#include <linux/types.h>
	5
	6	/* All of the structures in this file may not change size as they are
	7	* passed into the kernel from userspace via netlink sockets.
	8	*/
	9
	10	/* Structure to encapsulate addresses. I do not want to use
	11	* "standard" structure. My apologies.
	12	*/
	13	typedef union
	14	{
	15	__u32 a4;
	16	__u32 a6[4];
	17	} xfrm_address_t;
	18
	19	/* Ident of a specific xfrm_state. It is used on input to lookup
	20	* the state by (spi,daddr,ah/esp) or to store information about
	21	* spi, protocol and tunnel address on output.
	22	*/
	23	struct xfrm_id
	24	{
	25	xfrm_address_t daddr;
	26	__u32 spi;
	27	__u8 proto;
	28	};
	29
	30	/* Selector, used as selector both on policy rules (SPD) and SAs. */
	31
	32	struct xfrm_selector
	33	{
	34	xfrm_address_t daddr;
	35	xfrm_address_t saddr;
	36	__u16 dport;
	37	__u16 dport_mask;
	38	__u16 sport;
	39	__u16 sport_mask;
	40	__u16 family;
	41	__u8 prefixlen_d;
	42	__u8 prefixlen_s;
	43	__u8 proto;
	44	int ifindex;
	45	uid_t user;
	46	};
	47
	48	#define XFRM_INF (~(__u64)0)
	49
	50	struct xfrm_lifetime_cfg
	51	{
	52	__u64 soft_byte_limit;
	53	__u64 hard_byte_limit;
	54	__u64 soft_packet_limit;
	55	__u64 hard_packet_limit;
	56	__u64 soft_add_expires_seconds;
	57	__u64 hard_add_expires_seconds;
	58	__u64 soft_use_expires_seconds;
	59	__u64 hard_use_expires_seconds;
	60	};
	61
	62	struct xfrm_lifetime_cur
	63	{
	64	__u64 bytes;
65	__u64 packets;
66	__u64 add_time;
67	__u64 use_time;
68	};
69
70	struct xfrm_replay_state
71	{
72	__u32 oseq;
73	__u32 seq;
74	__u32 bitmap;
75	};
76
77	struct xfrm_algo {
78	char alg_name[64];
79	int alg_key_len; /* in bits */
80	char alg_key[0];
81	};
82
83	struct xfrm_stats {
84	__u32 replay_window;
85	__u32 replay;
86	__u32 integrity_failed;
87	};
88
89	enum
90	{
91	XFRM_POLICY_IN = 0,
92	XFRM_POLICY_OUT = 1,
93	XFRM_POLICY_FWD = 2,
94	XFRM_POLICY_MAX = 3
95	};
96
97	enum
98	{
99	XFRM_SHARE_ANY, /* No limitations */
100	XFRM_SHARE_SESSION, /* For this session only */
101	XFRM_SHARE_USER, /* For this user only */
102	XFRM_SHARE_UNIQUE /* Use once */
103	};
104
105	/* Netlink configuration messages. */
106	enum {
107	XFRM_MSG_BASE = 0x10,
108
109	XFRM_MSG_NEWSA = 0x10,
110	#define XFRM_MSG_NEWSA XFRM_MSG_NEWSA
111	XFRM_MSG_DELSA,
112	#define XFRM_MSG_DELSA XFRM_MSG_DELSA
113	XFRM_MSG_GETSA,
114	#define XFRM_MSG_GETSA XFRM_MSG_GETSA
115
116	XFRM_MSG_NEWPOLICY,
117	#define XFRM_MSG_NEWPOLICY XFRM_MSG_NEWPOLICY
118	XFRM_MSG_DELPOLICY,
119	#define XFRM_MSG_DELPOLICY XFRM_MSG_DELPOLICY
120	XFRM_MSG_GETPOLICY,
121	#define XFRM_MSG_GETPOLICY XFRM_MSG_GETPOLICY
122
123	XFRM_MSG_ALLOCSPI,
124	#define XFRM_MSG_ALLOCSPI XFRM_MSG_ALLOCSPI
125	XFRM_MSG_ACQUIRE,
126	#define XFRM_MSG_ACQUIRE XFRM_MSG_ACQUIRE
127	XFRM_MSG_EXPIRE,
128	#define XFRM_MSG_EXPIRE XFRM_MSG_EXPIRE
129
130	XFRM_MSG_UPDPOLICY,
131	#define XFRM_MSG_UPDPOLICY XFRM_MSG_UPDPOLICY
132	XFRM_MSG_UPDSA,
133	#define XFRM_MSG_UPDSA XFRM_MSG_UPDSA
134
135	XFRM_MSG_POLEXPIRE,
136	#define XFRM_MSG_POLEXPIRE XFRM_MSG_POLEXPIRE
137
138	XFRM_MSG_FLUSHSA,
139	#define XFRM_MSG_FLUSHSA XFRM_MSG_FLUSHSA
140	XFRM_MSG_FLUSHPOLICY,
141	#define XFRM_MSG_FLUSHPOLICY XFRM_MSG_FLUSHPOLICY
142
526bdb80	143	__XFRM_MSG_MAX
1da177e4	144	};
526bdb80	145	#define XFRM_MSG_MAX (__XFRM_MSG_MAX - 1)
1da177e4 LT	146
	147	struct xfrm_user_tmpl {
	148	struct xfrm_id id;
	149	__u16 family;
	150	xfrm_address_t saddr;
	151	__u32 reqid;
	152	__u8 mode;
	153	__u8 share;
	154	__u8 optional;
	155	__u32 aalgos;
	156	__u32 ealgos;
	157	__u32 calgos;
	158	};
	159
	160	struct xfrm_encap_tmpl {
	161	__u16 encap_type;
	162	__u16 encap_sport;
	163	__u16 encap_dport;
	164	xfrm_address_t encap_oa;
	165	};
	166
	167	/* Netlink message attributes. */
	168	enum xfrm_attr_type_t {
	169	XFRMA_UNSPEC,
	170	XFRMA_ALG_AUTH, /* struct xfrm_algo */
	171	XFRMA_ALG_CRYPT, /* struct xfrm_algo */
	172	XFRMA_ALG_COMP, /* struct xfrm_algo */
	173	XFRMA_ENCAP, /* struct xfrm_algo + struct xfrm_encap_tmpl */
	174	XFRMA_TMPL, /* 1 or more struct xfrm_user_tmpl */
	175	__XFRMA_MAX
	176
	177	#define XFRMA_MAX (__XFRMA_MAX - 1)
	178	};
	179
	180	struct xfrm_usersa_info {
	181	struct xfrm_selector sel;
	182	struct xfrm_id id;
	183	xfrm_address_t saddr;
	184	struct xfrm_lifetime_cfg lft;
	185	struct xfrm_lifetime_cur curlft;
	186	struct xfrm_stats stats;
	187	__u32 seq;
	188	__u32 reqid;
	189	__u16 family;
	190	__u8 mode; /* 0=transport,1=tunnel */
	191	__u8 replay_window;
	192	__u8 flags;
	193	#define XFRM_STATE_NOECN 1
	194	#define XFRM_STATE_DECAP_DSCP 2
	195	};
	196
	197	struct xfrm_usersa_id {
	198	xfrm_address_t daddr;
	199	__u32 spi;
	200	__u16 family;
	201	__u8 proto;
	202	};
	203
	204	struct xfrm_userspi_info {
	205	struct xfrm_usersa_info info;
	206	__u32 min;
	207	__u32 max;
	208	};
	209
210	struct xfrm_userpolicy_info {
211	struct xfrm_selector sel;
212	struct xfrm_lifetime_cfg lft;
213	struct xfrm_lifetime_cur curlft;
214	__u32 priority;
215	__u32 index;
216	__u8 dir;
217	__u8 action;
218	#define XFRM_POLICY_ALLOW 0
219	#define XFRM_POLICY_BLOCK 1
220	__u8 flags;
221	#define XFRM_POLICY_LOCALOK 1 /* Allow user to override global policy */
222	__u8 share;
223	};
224
225	struct xfrm_userpolicy_id {
226	struct xfrm_selector sel;
227	__u32 index;
228	__u8 dir;
229	};
230
231	struct xfrm_user_acquire {
232	struct xfrm_id id;
233	xfrm_address_t saddr;
234	struct xfrm_selector sel;
235	struct xfrm_userpolicy_info policy;
236	__u32 aalgos;
237	__u32 ealgos;
238	__u32 calgos;
239	__u32 seq;
240	};
241
242	struct xfrm_user_expire {
243	struct xfrm_usersa_info state;
244	__u8 hard;
245	};
246
247	struct xfrm_user_polexpire {
248	struct xfrm_userpolicy_info pol;
249	__u8 hard;
250	};
251
252	struct xfrm_usersa_flush {
253	__u8 proto;
254	};
255
256	#define XFRMGRP_ACQUIRE 1
257	#define XFRMGRP_EXPIRE 2
258
259	#endif /* _LINUX_XFRM_H */