[linux-block.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;
};

struct xfrm_sec_ctx {
	__u8	ctx_doi;
	__u8	ctx_alg;
	__u16	ctx_len;
	__u32	ctx_sid;
	char	ctx_str[0];
};

/* Security Context Domains of Interpretation */
#define XFRM_SC_DOI_RESERVED 0
#define XFRM_SC_DOI_LSM 1

/* Security Context Algorithms */
#define XFRM_SC_ALG_RESERVED 0
#define XFRM_SC_ALG_SELINUX 1

/* 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_NEWAE,
#define XFRM_MSG_NEWAE XFRM_MSG_NEWAE
	XFRM_MSG_GETAE,
#define XFRM_MSG_GETAE XFRM_MSG_GETAE
	__XFRM_MSG_MAX
};
#define XFRM_MSG_MAX (__XFRM_MSG_MAX - 1)

#define XFRM_NR_MSGTYPES (XFRM_MSG_MAX + 1 - XFRM_MSG_BASE)

/*
 * Generic LSM security context for comunicating to user space
 * NOTE: Same format as sadb_x_sec_ctx
 */
struct xfrm_user_sec_ctx {
	__u16			len;
	__u16			exttype;
	__u8			ctx_alg;  /* LSMs: e.g., selinux == 1 */
	__u8			ctx_doi;
	__u16			ctx_len;
};

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;
};

/* AEVENT flags  */
enum xfrm_ae_ftype_t {
	XFRM_AE_UNSPEC,
	XFRM_AE_RTHR=1,	/* replay threshold*/
	XFRM_AE_RVAL=2, /* replay value */
	XFRM_AE_LVAL=4, /* lifetime value */
	XFRM_AE_ETHR=8, /* expiry timer threshold */
	XFRM_AE_CR=16, /* Event cause is replay update */
	XFRM_AE_CE=32, /* Event cause is timer expiry */
	XFRM_AE_CU=64, /* Event cause is policy update */
	__XFRM_AE_MAX

#define XFRM_AE_MAX (__XFRM_AE_MAX - 1)
};

/* 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_SA,
	XFRMA_POLICY,
	XFRMA_SEC_CTX,		/* struct xfrm_sec_ctx */
	XFRMA_LTIME_VAL,
	XFRMA_REPLAY_VAL,
	XFRMA_REPLAY_THRESH,
	XFRMA_ETIMER_THRESH,
	__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
#define XFRM_STATE_NOPMTUDISC	4
};

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

struct xfrm_aevent_id {
	struct xfrm_usersa_id		sa_id;
	__u32				flags;
};

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;
};

#ifndef __KERNEL__
/* backwards compatibility for userspace */
#define XFRMGRP_ACQUIRE		1
#define XFRMGRP_EXPIRE		2
#define XFRMGRP_SA		4
#define XFRMGRP_POLICY		8
#endif

enum xfrm_nlgroups {
	XFRMNLGRP_NONE,
#define XFRMNLGRP_NONE		XFRMNLGRP_NONE
	XFRMNLGRP_ACQUIRE,
#define XFRMNLGRP_ACQUIRE	XFRMNLGRP_ACQUIRE
	XFRMNLGRP_EXPIRE,
#define XFRMNLGRP_EXPIRE	XFRMNLGRP_EXPIRE
	XFRMNLGRP_SA,
#define XFRMNLGRP_SA		XFRMNLGRP_SA
	XFRMNLGRP_POLICY,
#define XFRMNLGRP_POLICY	XFRMNLGRP_POLICY
	XFRMNLGRP_AEVENTS,
#define XFRMNLGRP_AEVENTS	XFRMNLGRP_AEVENTS
	__XFRMNLGRP_MAX
};
#define XFRMNLGRP_MAX	(__XFRMNLGRP_MAX - 1)

#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
df71837d TJ	30	struct xfrm_sec_ctx {
	31	__u8 ctx_doi;
	32	__u8 ctx_alg;
	33	__u16 ctx_len;
	34	__u32 ctx_sid;
	35	char ctx_str[0];
	36	};
	37
	38	/* Security Context Domains of Interpretation */
	39	#define XFRM_SC_DOI_RESERVED 0
	40	#define XFRM_SC_DOI_LSM 1
	41
	42	/* Security Context Algorithms */
	43	#define XFRM_SC_ALG_RESERVED 0
	44	#define XFRM_SC_ALG_SELINUX 1
	45
1da177e4 LT	46	/* Selector, used as selector both on policy rules (SPD) and SAs. */
	47
	48	struct xfrm_selector
	49	{
	50	xfrm_address_t daddr;
	51	xfrm_address_t saddr;
	52	__u16 dport;
	53	__u16 dport_mask;
	54	__u16 sport;
	55	__u16 sport_mask;
	56	__u16 family;
	57	__u8 prefixlen_d;
	58	__u8 prefixlen_s;
	59	__u8 proto;
	60	int ifindex;
	61	uid_t user;
	62	};
	63
	64	#define XFRM_INF (~(__u64)0)
	65
	66	struct xfrm_lifetime_cfg
	67	{
	68	__u64 soft_byte_limit;
	69	__u64 hard_byte_limit;
	70	__u64 soft_packet_limit;
	71	__u64 hard_packet_limit;
	72	__u64 soft_add_expires_seconds;
	73	__u64 hard_add_expires_seconds;
	74	__u64 soft_use_expires_seconds;
	75	__u64 hard_use_expires_seconds;
	76	};
	77
	78	struct xfrm_lifetime_cur
	79	{
	80	__u64 bytes;
	81	__u64 packets;
	82	__u64 add_time;
	83	__u64 use_time;
	84	};
	85
	86	struct xfrm_replay_state
	87	{
	88	__u32 oseq;
	89	__u32 seq;
	90	__u32 bitmap;
	91	};
	92
	93	struct xfrm_algo {
	94	char alg_name[64];
	95	int alg_key_len; /* in bits */
	96	char alg_key[0];
	97	};
	98
	99	struct xfrm_stats {
	100	__u32 replay_window;
	101	__u32 replay;
	102	__u32 integrity_failed;
	103	};
	104
	105	enum
	106	{
	107	XFRM_POLICY_IN = 0,
	108	XFRM_POLICY_OUT = 1,
	109	XFRM_POLICY_FWD = 2,
110	XFRM_POLICY_MAX = 3
111	};
112
113	enum
114	{
115	XFRM_SHARE_ANY, /* No limitations */
116	XFRM_SHARE_SESSION, /* For this session only */
117	XFRM_SHARE_USER, /* For this user only */
118	XFRM_SHARE_UNIQUE /* Use once */
119	};
120
121	/* Netlink configuration messages. */
122	enum {
123	XFRM_MSG_BASE = 0x10,
124
125	XFRM_MSG_NEWSA = 0x10,
126	#define XFRM_MSG_NEWSA XFRM_MSG_NEWSA
127	XFRM_MSG_DELSA,
128	#define XFRM_MSG_DELSA XFRM_MSG_DELSA
129	XFRM_MSG_GETSA,
130	#define XFRM_MSG_GETSA XFRM_MSG_GETSA
131
132	XFRM_MSG_NEWPOLICY,
133	#define XFRM_MSG_NEWPOLICY XFRM_MSG_NEWPOLICY
134	XFRM_MSG_DELPOLICY,
135	#define XFRM_MSG_DELPOLICY XFRM_MSG_DELPOLICY
136	XFRM_MSG_GETPOLICY,
137	#define XFRM_MSG_GETPOLICY XFRM_MSG_GETPOLICY
138
139	XFRM_MSG_ALLOCSPI,
140	#define XFRM_MSG_ALLOCSPI XFRM_MSG_ALLOCSPI
141	XFRM_MSG_ACQUIRE,
142	#define XFRM_MSG_ACQUIRE XFRM_MSG_ACQUIRE
143	XFRM_MSG_EXPIRE,
144	#define XFRM_MSG_EXPIRE XFRM_MSG_EXPIRE
145
146	XFRM_MSG_UPDPOLICY,
147	#define XFRM_MSG_UPDPOLICY XFRM_MSG_UPDPOLICY
148	XFRM_MSG_UPDSA,
149	#define XFRM_MSG_UPDSA XFRM_MSG_UPDSA
150
151	XFRM_MSG_POLEXPIRE,
152	#define XFRM_MSG_POLEXPIRE XFRM_MSG_POLEXPIRE
153
154	XFRM_MSG_FLUSHSA,
155	#define XFRM_MSG_FLUSHSA XFRM_MSG_FLUSHSA
156	XFRM_MSG_FLUSHPOLICY,
157	#define XFRM_MSG_FLUSHPOLICY XFRM_MSG_FLUSHPOLICY
158
f8cd5488 JHS	159	XFRM_MSG_NEWAE,
	160	#define XFRM_MSG_NEWAE XFRM_MSG_NEWAE
	161	XFRM_MSG_GETAE,
	162	#define XFRM_MSG_GETAE XFRM_MSG_GETAE
526bdb80	163	__XFRM_MSG_MAX
1da177e4	164	};
526bdb80	165	#define XFRM_MSG_MAX (__XFRM_MSG_MAX - 1)
1da177e4	166
492b558b TG	167	#define XFRM_NR_MSGTYPES (XFRM_MSG_MAX + 1 - XFRM_MSG_BASE)
492b558b TG	168
df71837d TJ	169	/*
	170	* Generic LSM security context for comunicating to user space
	171	* NOTE: Same format as sadb_x_sec_ctx
	172	*/
	173	struct xfrm_user_sec_ctx {
	174	__u16 len;
	175	__u16 exttype;
	176	__u8 ctx_alg; /* LSMs: e.g., selinux == 1 */
	177	__u8 ctx_doi;
	178	__u16 ctx_len;
	179	};
	180
1da177e4 LT	181	struct xfrm_user_tmpl {
	182	struct xfrm_id id;
	183	__u16 family;
	184	xfrm_address_t saddr;
	185	__u32 reqid;
	186	__u8 mode;
	187	__u8 share;
	188	__u8 optional;
	189	__u32 aalgos;
	190	__u32 ealgos;
	191	__u32 calgos;
	192	};
	193
	194	struct xfrm_encap_tmpl {
	195	__u16 encap_type;
	196	__u16 encap_sport;
	197	__u16 encap_dport;
	198	xfrm_address_t encap_oa;
	199	};
	200
f8cd5488 JHS	201	/* AEVENT flags */
	202	enum xfrm_ae_ftype_t {
	203	XFRM_AE_UNSPEC,
	204	XFRM_AE_RTHR=1, /* replay threshold*/
	205	XFRM_AE_RVAL=2, /* replay value */
	206	XFRM_AE_LVAL=4, /* lifetime value */
	207	XFRM_AE_ETHR=8, /* expiry timer threshold */
	208	XFRM_AE_CR=16, /* Event cause is replay update */
	209	XFRM_AE_CE=32, /* Event cause is timer expiry */
	210	XFRM_AE_CU=64, /* Event cause is policy update */
	211	__XFRM_AE_MAX
	212
	213	#define XFRM_AE_MAX (__XFRM_AE_MAX - 1)
	214	};
	215
1da177e4 LT	216	/* Netlink message attributes. */
	217	enum xfrm_attr_type_t {
	218	XFRMA_UNSPEC,
	219	XFRMA_ALG_AUTH, /* struct xfrm_algo */
	220	XFRMA_ALG_CRYPT, /* struct xfrm_algo */
	221	XFRMA_ALG_COMP, /* struct xfrm_algo */
	222	XFRMA_ENCAP, /* struct xfrm_algo + struct xfrm_encap_tmpl */
	223	XFRMA_TMPL, /* 1 or more struct xfrm_user_tmpl */
0603eac0 HX	224	XFRMA_SA,
0603eac0 HX	225	XFRMA_POLICY,
df71837d	226	XFRMA_SEC_CTX, /* struct xfrm_sec_ctx */
f8cd5488 JHS	227	XFRMA_LTIME_VAL,
	228	XFRMA_REPLAY_VAL,
	229	XFRMA_REPLAY_THRESH,
	230	XFRMA_ETIMER_THRESH,
1da177e4 LT	231	__XFRMA_MAX
	232
	233	#define XFRMA_MAX (__XFRMA_MAX - 1)
	234	};
	235
	236	struct xfrm_usersa_info {
	237	struct xfrm_selector sel;
	238	struct xfrm_id id;
	239	xfrm_address_t saddr;
	240	struct xfrm_lifetime_cfg lft;
	241	struct xfrm_lifetime_cur curlft;
	242	struct xfrm_stats stats;
	243	__u32 seq;
	244	__u32 reqid;
	245	__u16 family;
	246	__u8 mode; /* 0=transport,1=tunnel */
	247	__u8 replay_window;
	248	__u8 flags;
	249	#define XFRM_STATE_NOECN 1
	250	#define XFRM_STATE_DECAP_DSCP 2
dd87147e	251	#define XFRM_STATE_NOPMTUDISC 4
1da177e4 LT	252	};
	253
	254	struct xfrm_usersa_id {
	255	xfrm_address_t daddr;
	256	__u32 spi;
	257	__u16 family;
	258	__u8 proto;
	259	};
	260
f8cd5488	261	struct xfrm_aevent_id {
f8cd5488	262	struct xfrm_usersa_id sa_id;
4bf07ef3	263	__u32 flags;
f8cd5488 JHS	264	};
f8cd5488 JHS	265
1da177e4 LT	266	struct xfrm_userspi_info {
	267	struct xfrm_usersa_info info;
	268	__u32 min;
	269	__u32 max;
	270	};
	271
	272	struct xfrm_userpolicy_info {
	273	struct xfrm_selector sel;
	274	struct xfrm_lifetime_cfg lft;
	275	struct xfrm_lifetime_cur curlft;
	276	__u32 priority;
	277	__u32 index;
	278	__u8 dir;
	279	__u8 action;
	280	#define XFRM_POLICY_ALLOW 0
	281	#define XFRM_POLICY_BLOCK 1
	282	__u8 flags;
	283	#define XFRM_POLICY_LOCALOK 1 /* Allow user to override global policy */
	284	__u8 share;
	285	};
	286
	287	struct xfrm_userpolicy_id {
	288	struct xfrm_selector sel;
	289	__u32 index;
	290	__u8 dir;
	291	};
	292
	293	struct xfrm_user_acquire {
	294	struct xfrm_id id;
	295	xfrm_address_t saddr;
	296	struct xfrm_selector sel;
	297	struct xfrm_userpolicy_info policy;
	298	__u32 aalgos;
	299	__u32 ealgos;
	300	__u32 calgos;
	301	__u32 seq;
	302	};
	303
	304	struct xfrm_user_expire {
	305	struct xfrm_usersa_info state;
	306	__u8 hard;
	307	};
	308
	309	struct xfrm_user_polexpire {
	310	struct xfrm_userpolicy_info pol;
	311	__u8 hard;
	312	};
	313
	314	struct xfrm_usersa_flush {
	315	__u8 proto;
	316	};
	317
ac6d439d PM	318	#ifndef __KERNEL__
ac6d439d PM	319	/* backwards compatibility for userspace */
1da177e4 LT	320	#define XFRMGRP_ACQUIRE 1
1da177e4 LT	321	#define XFRMGRP_EXPIRE 2
26b15dad JHS	322	#define XFRMGRP_SA 4
26b15dad JHS	323	#define XFRMGRP_POLICY 8
ac6d439d PM	324	#endif
	325
	326	enum xfrm_nlgroups {
	327	XFRMNLGRP_NONE,
	328	#define XFRMNLGRP_NONE XFRMNLGRP_NONE
	329	XFRMNLGRP_ACQUIRE,
	330	#define XFRMNLGRP_ACQUIRE XFRMNLGRP_ACQUIRE
	331	XFRMNLGRP_EXPIRE,
	332	#define XFRMNLGRP_EXPIRE XFRMNLGRP_EXPIRE
	333	XFRMNLGRP_SA,
	334	#define XFRMNLGRP_SA XFRMNLGRP_SA
	335	XFRMNLGRP_POLICY,
	336	#define XFRMNLGRP_POLICY XFRMNLGRP_POLICY
f8cd5488 JHS	337	XFRMNLGRP_AEVENTS,
f8cd5488 JHS	338	#define XFRMNLGRP_AEVENTS XFRMNLGRP_AEVENTS
ac6d439d PM	339	__XFRMNLGRP_MAX
	340	};
	341	#define XFRMNLGRP_MAX (__XFRMNLGRP_MAX - 1)
1da177e4 LT	342
1da177e4 LT	343	#endif /* _LINUX_XFRM_H */