[linux-2.6-block.git] / include / uapi / linux / xfrm.h

/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef _LINUX_XFRM_H
#define _LINUX_XFRM_H

#include <linux/in6.h>
#include <linux/types.h>
#include <linux/stddef.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 {
	__be32		a4;
	__be32		a6[4];
	struct in6_addr	in6;
} 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;
	__be32		spi;
	__u8		proto;
};

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

/* 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;
	__be16	dport;
	__be16	dport_mask;
	__be16	sport;
	__be16	sport_mask;
	__u16	family;
	__u8	prefixlen_d;
	__u8	prefixlen_s;
	__u8	proto;
	int	ifindex;
	__kernel_uid32_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;
};

#define XFRMA_REPLAY_ESN_MAX	4096

struct xfrm_replay_state_esn {
	unsigned int	bmp_len;
	__u32		oseq;
	__u32		seq;
	__u32		oseq_hi;
	__u32		seq_hi;
	__u32		replay_window;
	__u32		bmp[];
};

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

struct xfrm_algo_auth {
	char		alg_name[64];
	unsigned int	alg_key_len;    /* in bits */
	unsigned int	alg_trunc_len;  /* in bits */
	char		alg_key[];
};

struct xfrm_algo_aead {
	char		alg_name[64];
	unsigned int	alg_key_len;	/* in bits */
	unsigned int	alg_icv_len;	/* in bits */
	char		alg_key[];
};

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

enum {
	XFRM_POLICY_TYPE_MAIN	= 0,
	XFRM_POLICY_TYPE_SUB	= 1,
	XFRM_POLICY_TYPE_MAX	= 2,
	XFRM_POLICY_TYPE_ANY	= 255
};

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

enum xfrm_sa_dir {
	XFRM_SA_DIR_IN	= 1,
	XFRM_SA_DIR_OUT = 2
};

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 */
};

#define XFRM_MODE_TRANSPORT 0
#define XFRM_MODE_TUNNEL 1
#define XFRM_MODE_ROUTEOPTIMIZATION 2
#define XFRM_MODE_IN_TRIGGER 3
#define XFRM_MODE_BEET 4
#define XFRM_MODE_MAX 5

/* 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_REPORT,
#define XFRM_MSG_REPORT XFRM_MSG_REPORT

	XFRM_MSG_MIGRATE,
#define XFRM_MSG_MIGRATE XFRM_MSG_MIGRATE

	XFRM_MSG_NEWSADINFO,
#define XFRM_MSG_NEWSADINFO XFRM_MSG_NEWSADINFO
	XFRM_MSG_GETSADINFO,
#define XFRM_MSG_GETSADINFO XFRM_MSG_GETSADINFO

	XFRM_MSG_NEWSPDINFO,
#define XFRM_MSG_NEWSPDINFO XFRM_MSG_NEWSPDINFO
	XFRM_MSG_GETSPDINFO,
#define XFRM_MSG_GETSPDINFO XFRM_MSG_GETSPDINFO

	XFRM_MSG_MAPPING,
#define XFRM_MSG_MAPPING XFRM_MSG_MAPPING

	XFRM_MSG_SETDEFAULT,
#define XFRM_MSG_SETDEFAULT XFRM_MSG_SETDEFAULT
	XFRM_MSG_GETDEFAULT,
#define XFRM_MSG_GETDEFAULT XFRM_MSG_GETDEFAULT
	__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 communicating 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;
	__be16		encap_sport;
	__be16		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)
};

struct xfrm_userpolicy_type {
	__u8		type;
	__u16		reserved1;
	__u8		reserved2;
};

/* 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,		/* struct xfrm_usersa_info  */
	XFRMA_POLICY,		/*struct xfrm_userpolicy_info */
	XFRMA_SEC_CTX,		/* struct xfrm_sec_ctx */
	XFRMA_LTIME_VAL,
	XFRMA_REPLAY_VAL,
	XFRMA_REPLAY_THRESH,
	XFRMA_ETIMER_THRESH,
	XFRMA_SRCADDR,		/* xfrm_address_t */
	XFRMA_COADDR,		/* xfrm_address_t */
	XFRMA_LASTUSED,		/* __u64 */
	XFRMA_POLICY_TYPE,	/* struct xfrm_userpolicy_type */
	XFRMA_MIGRATE,
	XFRMA_ALG_AEAD,		/* struct xfrm_algo_aead */
	XFRMA_KMADDRESS,        /* struct xfrm_user_kmaddress */
	XFRMA_ALG_AUTH_TRUNC,	/* struct xfrm_algo_auth */
	XFRMA_MARK,		/* struct xfrm_mark */
	XFRMA_TFCPAD,		/* __u32 */
	XFRMA_REPLAY_ESN_VAL,	/* struct xfrm_replay_state_esn */
	XFRMA_SA_EXTRA_FLAGS,	/* __u32 */
	XFRMA_PROTO,		/* __u8 */
	XFRMA_ADDRESS_FILTER,	/* struct xfrm_address_filter */
	XFRMA_PAD,
	XFRMA_OFFLOAD_DEV,	/* struct xfrm_user_offload */
	XFRMA_SET_MARK,		/* __u32 */
	XFRMA_SET_MARK_MASK,	/* __u32 */
	XFRMA_IF_ID,		/* __u32 */
	XFRMA_MTIMER_THRESH,	/* __u32 in seconds for input SA */
	XFRMA_SA_DIR,		/* __u8 */
	__XFRMA_MAX

#define XFRMA_OUTPUT_MARK XFRMA_SET_MARK	/* Compatibility */
#define XFRMA_MAX (__XFRMA_MAX - 1)
};

struct xfrm_mark {
	__u32           v; /* value */
	__u32           m; /* mask */
};

enum xfrm_sadattr_type_t {
	XFRMA_SAD_UNSPEC,
	XFRMA_SAD_CNT,
	XFRMA_SAD_HINFO,
	__XFRMA_SAD_MAX

#define XFRMA_SAD_MAX (__XFRMA_SAD_MAX - 1)
};

struct xfrmu_sadhinfo {
	__u32 sadhcnt; /* current hash bkts */
	__u32 sadhmcnt; /* max allowed hash bkts */
};

enum xfrm_spdattr_type_t {
	XFRMA_SPD_UNSPEC,
	XFRMA_SPD_INFO,
	XFRMA_SPD_HINFO,
	XFRMA_SPD_IPV4_HTHRESH,
	XFRMA_SPD_IPV6_HTHRESH,
	__XFRMA_SPD_MAX

#define XFRMA_SPD_MAX (__XFRMA_SPD_MAX - 1)
};

struct xfrmu_spdinfo {
	__u32 incnt;
	__u32 outcnt;
	__u32 fwdcnt;
	__u32 inscnt;
	__u32 outscnt;
	__u32 fwdscnt;
};

struct xfrmu_spdhinfo {
	__u32 spdhcnt;
	__u32 spdhmcnt;
};

struct xfrmu_spdhthresh {
	__u8 lbits;
	__u8 rbits;
};

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;		/* XFRM_MODE_xxx */
	__u8				replay_window;
	__u8				flags;
#define XFRM_STATE_NOECN	1
#define XFRM_STATE_DECAP_DSCP	2
#define XFRM_STATE_NOPMTUDISC	4
#define XFRM_STATE_WILDRECV	8
#define XFRM_STATE_ICMP		16
#define XFRM_STATE_AF_UNSPEC	32
#define XFRM_STATE_ALIGN4	64
#define XFRM_STATE_ESN		128
};

#define XFRM_SA_XFLAG_DONT_ENCAP_DSCP	1
#define XFRM_SA_XFLAG_OSEQ_MAY_WRAP	2

struct xfrm_usersa_id {
	xfrm_address_t			daddr;
	__be32				spi;
	__u16				family;
	__u8				proto;
};

struct xfrm_aevent_id {
	struct xfrm_usersa_id		sa_id;
	xfrm_address_t			saddr;
	__u32				flags;
	__u32				reqid;
};

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 */
	/* Automatically expand selector to include matching ICMP payloads. */
#define XFRM_POLICY_ICMP	2
	__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;
};

struct xfrm_user_report {
	__u8				proto;
	struct xfrm_selector		sel;
};

/* Used by MIGRATE to pass addresses IKE should use to perform
 * SA negotiation with the peer */
struct xfrm_user_kmaddress {
	xfrm_address_t                  local;
	xfrm_address_t                  remote;
	__u32				reserved;
	__u16				family;
};

struct xfrm_user_migrate {
	xfrm_address_t			old_daddr;
	xfrm_address_t			old_saddr;
	xfrm_address_t			new_daddr;
	xfrm_address_t			new_saddr;
	__u8				proto;
	__u8				mode;
	__u16				reserved;
	__u32				reqid;
	__u16				old_family;
	__u16				new_family;
};

struct xfrm_user_mapping {
	struct xfrm_usersa_id		id;
	__u32				reqid;
	xfrm_address_t			old_saddr;
	xfrm_address_t			new_saddr;
	__be16				old_sport;
	__be16				new_sport;
};

struct xfrm_address_filter {
	xfrm_address_t			saddr;
	xfrm_address_t			daddr;
	__u16				family;
	__u8				splen;
	__u8				dplen;
};

struct xfrm_user_offload {
	int				ifindex;
	__u8				flags;
};
/* This flag was exposed without any kernel code that supports it.
 * Unfortunately, strongswan has the code that sets this flag,
 * which makes it impossible to reuse this bit.
 *
 * So leave it here to make sure that it won't be reused by mistake.
 */
#define XFRM_OFFLOAD_IPV6	1
#define XFRM_OFFLOAD_INBOUND	2
/* Two bits above are relevant for state path only, while
 * offload is used for both policy and state flows.
 *
 * In policy offload mode, they are free and can be safely reused.
 */
#define XFRM_OFFLOAD_PACKET	4

struct xfrm_userpolicy_default {
#define XFRM_USERPOLICY_UNSPEC	0
#define XFRM_USERPOLICY_BLOCK	1
#define XFRM_USERPOLICY_ACCEPT	2
	__u8				in;
	__u8				fwd;
	__u8				out;
};

#ifndef __KERNEL__
/* backwards compatibility for userspace */
#define XFRMGRP_ACQUIRE		1
#define XFRMGRP_EXPIRE		2
#define XFRMGRP_SA		4
#define XFRMGRP_POLICY		8
#define XFRMGRP_REPORT		0x20
#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_REPORT,
#define XFRMNLGRP_REPORT	XFRMNLGRP_REPORT
	XFRMNLGRP_MIGRATE,
#define XFRMNLGRP_MIGRATE	XFRMNLGRP_MIGRATE
	XFRMNLGRP_MAPPING,
#define XFRMNLGRP_MAPPING	XFRMNLGRP_MAPPING
	__XFRMNLGRP_MAX
};
#define XFRMNLGRP_MAX	(__XFRMNLGRP_MAX - 1)

#endif /* _LINUX_XFRM_H */
Commit	Line	Data
6f52b16c	1	/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
1da177e4 LT	2	#ifndef _LINUX_XFRM_H
	3	#define _LINUX_XFRM_H
	4
15e318bd	5	#include <linux/in6.h>
1da177e4	6	#include <linux/types.h>
1d495f1c	7	#include <linux/stddef.h>
1da177e4 LT	8
	9	/* All of the structures in this file may not change size as they are
	10	* passed into the kernel from userspace via netlink sockets.
	11	*/
	12
	13	/* Structure to encapsulate addresses. I do not want to use
	14	* "standard" structure. My apologies.
	15	*/
d94d9fee	16	typedef union {
737b5761 AV	17	__be32 a4;
737b5761 AV	18	__be32 a6[4];
15e318bd	19	struct in6_addr in6;
1da177e4 LT	20	} xfrm_address_t;
	21
	22	/* Ident of a specific xfrm_state. It is used on input to lookup
	23	* the state by (spi,daddr,ah/esp) or to store information about
	24	* spi, protocol and tunnel address on output.
	25	*/
d94d9fee	26	struct xfrm_id {
1da177e4	27	xfrm_address_t daddr;
e037c39b	28	__be32 spi;
1da177e4 LT	29	__u8 proto;
	30	};
	31
df71837d TJ	32	struct xfrm_sec_ctx {
	33	__u8 ctx_doi;
	34	__u8 ctx_alg;
	35	__u16 ctx_len;
	36	__u32 ctx_sid;
1d495f1c	37	char ctx_str[] __counted_by(ctx_len);
df71837d TJ	38	};
	39
	40	/* Security Context Domains of Interpretation */
	41	#define XFRM_SC_DOI_RESERVED 0
	42	#define XFRM_SC_DOI_LSM 1
	43
	44	/* Security Context Algorithms */
	45	#define XFRM_SC_ALG_RESERVED 0
	46	#define XFRM_SC_ALG_SELINUX 1
	47
1da177e4 LT	48	/* Selector, used as selector both on policy rules (SPD) and SAs. */
1da177e4 LT	49
d94d9fee	50	struct xfrm_selector {
1da177e4 LT	51	xfrm_address_t daddr;
1da177e4 LT	52	xfrm_address_t saddr;
8f83f23e AV	53	__be16 dport;
	54	__be16 dport_mask;
	55	__be16 sport;
	56	__be16 sport_mask;
1da177e4 LT	57	__u16 family;
	58	__u8 prefixlen_d;
	59	__u8 prefixlen_s;
	60	__u8 proto;
	61	int ifindex;
85efde6f	62	__kernel_uid32_t user;
1da177e4 LT	63	};
	64
	65	#define XFRM_INF (~(__u64)0)
	66
d94d9fee	67	struct xfrm_lifetime_cfg {
1da177e4 LT	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
d94d9fee	78	struct xfrm_lifetime_cur {
1da177e4 LT	79	__u64 bytes;
	80	__u64 packets;
	81	__u64 add_time;
	82	__u64 use_time;
	83	};
	84
d94d9fee	85	struct xfrm_replay_state {
1da177e4 LT	86	__u32 oseq;
	87	__u32 seq;
	88	__u32 bitmap;
	89	};
	90
ecd79187 MK	91	#define XFRMA_REPLAY_ESN_MAX 4096
ecd79187 MK	92
9736acf3 SK	93	struct xfrm_replay_state_esn {
	94	unsigned int bmp_len;
	95	__u32 oseq;
	96	__u32 seq;
	97	__u32 oseq_hi;
	98	__u32 seq_hi;
	99	__u32 replay_window;
94dfc73e	100	__u32 bmp[];
9736acf3 SK	101	};
9736acf3 SK	102
1da177e4	103	struct xfrm_algo {
3f4afb64	104	char alg_name[64];
ba749ae9	105	unsigned int alg_key_len; /* in bits */
94dfc73e	106	char alg_key[];
1da177e4 LT	107	};
1da177e4 LT	108
4e242d16 MW	109	struct xfrm_algo_auth {
	110	char alg_name[64];
	111	unsigned int alg_key_len; /* in bits */
	112	unsigned int alg_trunc_len; /* in bits */
94dfc73e	113	char alg_key[];
4e242d16 MW	114	};
4e242d16 MW	115
1a6509d9	116	struct xfrm_algo_aead {
461e6c85 ED	117	char alg_name[64];
	118	unsigned int alg_key_len; /* in bits */
	119	unsigned int alg_icv_len; /* in bits */
94dfc73e	120	char alg_key[];
1a6509d9 HX	121	};
1a6509d9 HX	122
1da177e4 LT	123	struct xfrm_stats {
	124	__u32 replay_window;
	125	__u32 replay;
	126	__u32 integrity_failed;
	127	};
	128
d94d9fee	129	enum {
4e81bb83 MN	130	XFRM_POLICY_TYPE_MAIN = 0,
4e81bb83 MN	131	XFRM_POLICY_TYPE_SUB = 1,
4c563f76 TT	132	XFRM_POLICY_TYPE_MAX = 2,
4c563f76 TT	133	XFRM_POLICY_TYPE_ANY = 255
4e81bb83 MN	134	};
4e81bb83 MN	135
d94d9fee	136	enum {
1da177e4 LT	137	XFRM_POLICY_IN = 0,
	138	XFRM_POLICY_OUT = 1,
	139	XFRM_POLICY_FWD = 2,
d5422efe	140	XFRM_POLICY_MASK = 3,
1da177e4 LT	141	XFRM_POLICY_MAX = 3
	142	};
	143
a4a87fa4 AA	144	enum xfrm_sa_dir {
	145	XFRM_SA_DIR_IN = 1,
	146	XFRM_SA_DIR_OUT = 2
	147	};
	148
d94d9fee	149	enum {
1da177e4 LT	150	XFRM_SHARE_ANY, /* No limitations */
	151	XFRM_SHARE_SESSION, /* For this session only */
	152	XFRM_SHARE_USER, /* For this user only */
	153	XFRM_SHARE_UNIQUE /* Use once */
	154	};
	155
b59f45d0 HX	156	#define XFRM_MODE_TRANSPORT 0
b59f45d0 HX	157	#define XFRM_MODE_TUNNEL 1
7e49e6de MN	158	#define XFRM_MODE_ROUTEOPTIMIZATION 2
7e49e6de MN	159	#define XFRM_MODE_IN_TRIGGER 3
0a69452c DB	160	#define XFRM_MODE_BEET 4
0a69452c DB	161	#define XFRM_MODE_MAX 5
b59f45d0	162
1da177e4 LT	163	/* Netlink configuration messages. */
	164	enum {
	165	XFRM_MSG_BASE = 0x10,
	166
	167	XFRM_MSG_NEWSA = 0x10,
	168	#define XFRM_MSG_NEWSA XFRM_MSG_NEWSA
	169	XFRM_MSG_DELSA,
	170	#define XFRM_MSG_DELSA XFRM_MSG_DELSA
	171	XFRM_MSG_GETSA,
	172	#define XFRM_MSG_GETSA XFRM_MSG_GETSA
	173
	174	XFRM_MSG_NEWPOLICY,
	175	#define XFRM_MSG_NEWPOLICY XFRM_MSG_NEWPOLICY
	176	XFRM_MSG_DELPOLICY,
	177	#define XFRM_MSG_DELPOLICY XFRM_MSG_DELPOLICY
	178	XFRM_MSG_GETPOLICY,
	179	#define XFRM_MSG_GETPOLICY XFRM_MSG_GETPOLICY
	180
	181	XFRM_MSG_ALLOCSPI,
	182	#define XFRM_MSG_ALLOCSPI XFRM_MSG_ALLOCSPI
	183	XFRM_MSG_ACQUIRE,
	184	#define XFRM_MSG_ACQUIRE XFRM_MSG_ACQUIRE
	185	XFRM_MSG_EXPIRE,
	186	#define XFRM_MSG_EXPIRE XFRM_MSG_EXPIRE
	187
	188	XFRM_MSG_UPDPOLICY,
	189	#define XFRM_MSG_UPDPOLICY XFRM_MSG_UPDPOLICY
	190	XFRM_MSG_UPDSA,
	191	#define XFRM_MSG_UPDSA XFRM_MSG_UPDSA
	192
	193	XFRM_MSG_POLEXPIRE,
	194	#define XFRM_MSG_POLEXPIRE XFRM_MSG_POLEXPIRE
	195
	196	XFRM_MSG_FLUSHSA,
	197	#define XFRM_MSG_FLUSHSA XFRM_MSG_FLUSHSA
	198	XFRM_MSG_FLUSHPOLICY,
	199	#define XFRM_MSG_FLUSHPOLICY XFRM_MSG_FLUSHPOLICY
	200
f8cd5488 JHS	201	XFRM_MSG_NEWAE,
	202	#define XFRM_MSG_NEWAE XFRM_MSG_NEWAE
	203	XFRM_MSG_GETAE,
	204	#define XFRM_MSG_GETAE XFRM_MSG_GETAE
97a64b45 MN	205
	206	XFRM_MSG_REPORT,
	207	#define XFRM_MSG_REPORT XFRM_MSG_REPORT
	208
80c9abaa SS	209	XFRM_MSG_MIGRATE,
	210	#define XFRM_MSG_MIGRATE XFRM_MSG_MIGRATE
	211
28d8909b JHS	212	XFRM_MSG_NEWSADINFO,
	213	#define XFRM_MSG_NEWSADINFO XFRM_MSG_NEWSADINFO
	214	XFRM_MSG_GETSADINFO,
	215	#define XFRM_MSG_GETSADINFO XFRM_MSG_GETSADINFO
ecfd6b18 JHS	216
	217	XFRM_MSG_NEWSPDINFO,
	218	#define XFRM_MSG_NEWSPDINFO XFRM_MSG_NEWSPDINFO
	219	XFRM_MSG_GETSPDINFO,
	220	#define XFRM_MSG_GETSPDINFO XFRM_MSG_GETSPDINFO
3a2dfbe8	221
844f7eaa ES	222	XFRM_MSG_MAPPING,
	223	#define XFRM_MSG_MAPPING XFRM_MSG_MAPPING
	224
2d151d39 SK	225	XFRM_MSG_SETDEFAULT,
	226	#define XFRM_MSG_SETDEFAULT XFRM_MSG_SETDEFAULT
	227	XFRM_MSG_GETDEFAULT,
	228	#define XFRM_MSG_GETDEFAULT XFRM_MSG_GETDEFAULT
526bdb80	229	__XFRM_MSG_MAX
1da177e4	230	};
526bdb80	231	#define XFRM_MSG_MAX (__XFRM_MSG_MAX - 1)
1da177e4	232
492b558b TG	233	#define XFRM_NR_MSGTYPES (XFRM_MSG_MAX + 1 - XFRM_MSG_BASE)
492b558b TG	234
df71837d	235	/*
b6d2e438	236	* Generic LSM security context for communicating to user space
df71837d TJ	237	* NOTE: Same format as sadb_x_sec_ctx
	238	*/
	239	struct xfrm_user_sec_ctx {
	240	__u16 len;
	241	__u16 exttype;
	242	__u8 ctx_alg; /* LSMs: e.g., selinux == 1 */
	243	__u8 ctx_doi;
	244	__u16 ctx_len;
	245	};
	246
1da177e4 LT	247	struct xfrm_user_tmpl {
	248	struct xfrm_id id;
	249	__u16 family;
	250	xfrm_address_t saddr;
	251	__u32 reqid;
	252	__u8 mode;
	253	__u8 share;
	254	__u8 optional;
	255	__u32 aalgos;
	256	__u32 ealgos;
	257	__u32 calgos;
	258	};
	259
	260	struct xfrm_encap_tmpl {
	261	__u16 encap_type;
d5a0a1e3 AV	262	__be16 encap_sport;
d5a0a1e3 AV	263	__be16 encap_dport;
1da177e4 LT	264	xfrm_address_t encap_oa;
	265	};
	266
f8cd5488 JHS	267	/* AEVENT flags */
	268	enum xfrm_ae_ftype_t {
	269	XFRM_AE_UNSPEC,
	270	XFRM_AE_RTHR=1, /* replay threshold*/
	271	XFRM_AE_RVAL=2, /* replay value */
	272	XFRM_AE_LVAL=4, /* lifetime value */
	273	XFRM_AE_ETHR=8, /* expiry timer threshold */
	274	XFRM_AE_CR=16, /* Event cause is replay update */
	275	XFRM_AE_CE=32, /* Event cause is timer expiry */
	276	XFRM_AE_CU=64, /* Event cause is policy update */
	277	__XFRM_AE_MAX
	278
	279	#define XFRM_AE_MAX (__XFRM_AE_MAX - 1)
	280	};
	281
f7b6983f MN	282	struct xfrm_userpolicy_type {
	283	__u8 type;
	284	__u16 reserved1;
	285	__u8 reserved2;
	286	};
	287
1da177e4 LT	288	/* Netlink message attributes. */
	289	enum xfrm_attr_type_t {
	290	XFRMA_UNSPEC,
	291	XFRMA_ALG_AUTH, /* struct xfrm_algo */
	292	XFRMA_ALG_CRYPT, /* struct xfrm_algo */
	293	XFRMA_ALG_COMP, /* struct xfrm_algo */
	294	XFRMA_ENCAP, /* struct xfrm_algo + struct xfrm_encap_tmpl */
	295	XFRMA_TMPL, /* 1 or more struct xfrm_user_tmpl */
bf825f81 JHS	296	XFRMA_SA, /* struct xfrm_usersa_info */
bf825f81 JHS	297	XFRMA_POLICY, /struct xfrm_userpolicy_info /
df71837d	298	XFRMA_SEC_CTX, /* struct xfrm_sec_ctx */
f8cd5488 JHS	299	XFRMA_LTIME_VAL,
	300	XFRMA_REPLAY_VAL,
	301	XFRMA_REPLAY_THRESH,
	302	XFRMA_ETIMER_THRESH,
eb2971b6	303	XFRMA_SRCADDR, /* xfrm_address_t */
060f02a3	304	XFRMA_COADDR, /* xfrm_address_t */
36d76350	305	XFRMA_LASTUSED, /* __u64 */
f7b6983f	306	XFRMA_POLICY_TYPE, /* struct xfrm_userpolicy_type */
80c9abaa	307	XFRMA_MIGRATE,
1a6509d9	308	XFRMA_ALG_AEAD, /* struct xfrm_algo_aead */
13c1d189	309	XFRMA_KMADDRESS, /* struct xfrm_user_kmaddress */
4e242d16	310	XFRMA_ALG_AUTH_TRUNC, /* struct xfrm_algo_auth */
bf825f81	311	XFRMA_MARK, /* struct xfrm_mark */
35d2856b	312	XFRMA_TFCPAD, /* __u32 */
34a3d4b2	313	XFRMA_REPLAY_ESN_VAL, /* struct xfrm_replay_state_esn */
a947b0a9	314	XFRMA_SA_EXTRA_FLAGS, /* __u32 */
d3623099	315	XFRMA_PROTO, /* __u8 */
870a2df4	316	XFRMA_ADDRESS_FILTER, /* struct xfrm_address_filter */
de95c4a4	317	XFRMA_PAD,
29e42766	318	XFRMA_OFFLOAD_DEV, /* struct xfrm_user_offload */
9b42c1f1 SK	319	XFRMA_SET_MARK, /* __u32 */
9b42c1f1 SK	320	XFRMA_SET_MARK_MASK, /* __u32 */
7e652640	321	XFRMA_IF_ID, /* __u32 */
4e484b3e	322	XFRMA_MTIMER_THRESH, /* __u32 in seconds for input SA */
a4a87fa4	323	XFRMA_SA_DIR, /* __u8 */
1da177e4 LT	324	__XFRMA_MAX
1da177e4 LT	325
9b42c1f1	326	#define XFRMA_OUTPUT_MARK XFRMA_SET_MARK /* Compatibility */
1da177e4 LT	327	#define XFRMA_MAX (__XFRMA_MAX - 1)
	328	};
	329
bf825f81 JHS	330	struct xfrm_mark {
	331	__u32 v; /* value */
	332	__u32 m; /* mask */
	333	};
	334
28d8909b JHS	335	enum xfrm_sadattr_type_t {
28d8909b JHS	336	XFRMA_SAD_UNSPEC,
af11e316 JHS	337	XFRMA_SAD_CNT,
af11e316 JHS	338	XFRMA_SAD_HINFO,
28d8909b JHS	339	__XFRMA_SAD_MAX
	340
	341	#define XFRMA_SAD_MAX (__XFRMA_SAD_MAX - 1)
	342	};
	343
af11e316 JHS	344	struct xfrmu_sadhinfo {
	345	__u32 sadhcnt; /* current hash bkts */
	346	__u32 sadhmcnt; /* max allowed hash bkts */
	347	};
	348
ecfd6b18 JHS	349	enum xfrm_spdattr_type_t {
ecfd6b18 JHS	350	XFRMA_SPD_UNSPEC,
5a6d3416 JHS	351	XFRMA_SPD_INFO,
5a6d3416 JHS	352	XFRMA_SPD_HINFO,
880a6fab CG	353	XFRMA_SPD_IPV4_HTHRESH,
880a6fab CG	354	XFRMA_SPD_IPV6_HTHRESH,
ecfd6b18 JHS	355	__XFRMA_SPD_MAX
	356
	357	#define XFRMA_SPD_MAX (__XFRMA_SPD_MAX - 1)
	358	};
	359
5a6d3416 JHS	360	struct xfrmu_spdinfo {
	361	__u32 incnt;
	362	__u32 outcnt;
	363	__u32 fwdcnt;
	364	__u32 inscnt;
	365	__u32 outscnt;
	366	__u32 fwdscnt;
	367	};
	368
	369	struct xfrmu_spdhinfo {
	370	__u32 spdhcnt;
	371	__u32 spdhmcnt;
	372	};
	373
880a6fab CG	374	struct xfrmu_spdhthresh {
	375	__u8 lbits;
	376	__u8 rbits;
	377	};
	378
1da177e4 LT	379	struct xfrm_usersa_info {
	380	struct xfrm_selector sel;
	381	struct xfrm_id id;
	382	xfrm_address_t saddr;
	383	struct xfrm_lifetime_cfg lft;
	384	struct xfrm_lifetime_cur curlft;
	385	struct xfrm_stats stats;
	386	__u32 seq;
	387	__u32 reqid;
	388	__u16 family;
7e49e6de	389	__u8 mode; /* XFRM_MODE_xxx */
1da177e4 LT	390	__u8 replay_window;
	391	__u8 flags;
	392	#define XFRM_STATE_NOECN 1
	393	#define XFRM_STATE_DECAP_DSCP 2
dd87147e	394	#define XFRM_STATE_NOPMTUDISC 4
fbd9a5b4	395	#define XFRM_STATE_WILDRECV 8
8b7817f3	396	#define XFRM_STATE_ICMP 16
ccf9b3b8	397	#define XFRM_STATE_AF_UNSPEC 32
fa9921e4	398	#define XFRM_STATE_ALIGN4 64
9736acf3	399	#define XFRM_STATE_ESN 128
1da177e4 LT	400	};
1da177e4 LT	401
a947b0a9	402	#define XFRM_SA_XFLAG_DONT_ENCAP_DSCP 1
428d2459	403	#define XFRM_SA_XFLAG_OSEQ_MAY_WRAP 2
a947b0a9	404
1da177e4 LT	405	struct xfrm_usersa_id {
1da177e4 LT	406	xfrm_address_t daddr;
9916ecb0	407	__be32 spi;
1da177e4 LT	408	__u16 family;
	409	__u8 proto;
	410	};
	411
f8cd5488	412	struct xfrm_aevent_id {
f8cd5488	413	struct xfrm_usersa_id sa_id;
2b5f6dcc	414	xfrm_address_t saddr;
4bf07ef3	415	__u32 flags;
2b5f6dcc	416	__u32 reqid;
f8cd5488 JHS	417	};
f8cd5488 JHS	418
1da177e4 LT	419	struct xfrm_userspi_info {
	420	struct xfrm_usersa_info info;
	421	__u32 min;
	422	__u32 max;
	423	};
	424
	425	struct xfrm_userpolicy_info {
	426	struct xfrm_selector sel;
	427	struct xfrm_lifetime_cfg lft;
	428	struct xfrm_lifetime_cur curlft;
	429	__u32 priority;
	430	__u32 index;
	431	__u8 dir;
	432	__u8 action;
	433	#define XFRM_POLICY_ALLOW 0
	434	#define XFRM_POLICY_BLOCK 1
	435	__u8 flags;
	436	#define XFRM_POLICY_LOCALOK 1 /* Allow user to override global policy */
8b7817f3 HX	437	/* Automatically expand selector to include matching ICMP payloads. */
8b7817f3 HX	438	#define XFRM_POLICY_ICMP 2
1da177e4 LT	439	__u8 share;
	440	};
	441
	442	struct xfrm_userpolicy_id {
	443	struct xfrm_selector sel;
	444	__u32 index;
	445	__u8 dir;
	446	};
	447
	448	struct xfrm_user_acquire {
	449	struct xfrm_id id;
	450	xfrm_address_t saddr;
	451	struct xfrm_selector sel;
	452	struct xfrm_userpolicy_info policy;
	453	__u32 aalgos;
	454	__u32 ealgos;
	455	__u32 calgos;
	456	__u32 seq;
	457	};
	458
	459	struct xfrm_user_expire {
	460	struct xfrm_usersa_info state;
	461	__u8 hard;
	462	};
	463
	464	struct xfrm_user_polexpire {
	465	struct xfrm_userpolicy_info pol;
	466	__u8 hard;
	467	};
	468
	469	struct xfrm_usersa_flush {
	470	__u8 proto;
	471	};
	472
97a64b45 MN	473	struct xfrm_user_report {
	474	__u8 proto;
	475	struct xfrm_selector sel;
	476	};
	477
13c1d189 AE	478	/* Used by MIGRATE to pass addresses IKE should use to perform
	479	* SA negotiation with the peer */
	480	struct xfrm_user_kmaddress {
	481	xfrm_address_t local;
	482	xfrm_address_t remote;
	483	__u32 reserved;
	484	__u16 family;
	485	};
	486
80c9abaa SS	487	struct xfrm_user_migrate {
	488	xfrm_address_t old_daddr;
	489	xfrm_address_t old_saddr;
	490	xfrm_address_t new_daddr;
	491	xfrm_address_t new_saddr;
	492	__u8 proto;
	493	__u8 mode;
	494	__u16 reserved;
	495	__u32 reqid;
	496	__u16 old_family;
	497	__u16 new_family;
	498	};
	499
3a2dfbe8 MW	500	struct xfrm_user_mapping {
	501	struct xfrm_usersa_id id;
	502	__u32 reqid;
	503	xfrm_address_t old_saddr;
	504	xfrm_address_t new_saddr;
	505	__be16 old_sport;
	506	__be16 new_sport;
	507	};
	508
870a2df4	509	struct xfrm_address_filter {
d3623099 ND	510	xfrm_address_t saddr;
	511	xfrm_address_t daddr;
	512	__u16 family;
	513	__u8 splen;
	514	__u8 dplen;
	515	};
	516
d77e38e6 SK	517	struct xfrm_user_offload {
	518	int ifindex;
	519	__u8 flags;
	520	};
5e25c25a PV	521	/* This flag was exposed without any kernel code that supports it.
	522	* Unfortunately, strongswan has the code that sets this flag,
	523	* which makes it impossible to reuse this bit.
7c76ecd9 LR	524	*
	525	* So leave it here to make sure that it won't be reused by mistake.
	526	*/
d77e38e6 SK	527	#define XFRM_OFFLOAD_IPV6 1
d77e38e6 SK	528	#define XFRM_OFFLOAD_INBOUND 2
d14f28b8 LR	529	/* Two bits above are relevant for state path only, while
	530	* offload is used for both policy and state flows.
	531	*
	532	* In policy offload mode, they are free and can be safely reused.
	533	*/
	534	#define XFRM_OFFLOAD_PACKET 4
d77e38e6	535
2d151d39	536	struct xfrm_userpolicy_default {
f8d858e6 ND	537	#define XFRM_USERPOLICY_UNSPEC 0
	538	#define XFRM_USERPOLICY_BLOCK 1
	539	#define XFRM_USERPOLICY_ACCEPT 2
	540	__u8 in;
	541	__u8 fwd;
	542	__u8 out;
2d151d39 SK	543	};
2d151d39 SK	544
ac6d439d PM	545	#ifndef __KERNEL__
ac6d439d PM	546	/* backwards compatibility for userspace */
1da177e4 LT	547	#define XFRMGRP_ACQUIRE 1
1da177e4 LT	548	#define XFRMGRP_EXPIRE 2
26b15dad JHS	549	#define XFRMGRP_SA 4
26b15dad JHS	550	#define XFRMGRP_POLICY 8
93366c53	551	#define XFRMGRP_REPORT 0x20
ac6d439d PM	552	#endif
	553
	554	enum xfrm_nlgroups {
	555	XFRMNLGRP_NONE,
	556	#define XFRMNLGRP_NONE XFRMNLGRP_NONE
	557	XFRMNLGRP_ACQUIRE,
	558	#define XFRMNLGRP_ACQUIRE XFRMNLGRP_ACQUIRE
	559	XFRMNLGRP_EXPIRE,
	560	#define XFRMNLGRP_EXPIRE XFRMNLGRP_EXPIRE
	561	XFRMNLGRP_SA,
	562	#define XFRMNLGRP_SA XFRMNLGRP_SA
	563	XFRMNLGRP_POLICY,
	564	#define XFRMNLGRP_POLICY XFRMNLGRP_POLICY
f8cd5488 JHS	565	XFRMNLGRP_AEVENTS,
f8cd5488 JHS	566	#define XFRMNLGRP_AEVENTS XFRMNLGRP_AEVENTS
97a64b45 MN	567	XFRMNLGRP_REPORT,
97a64b45 MN	568	#define XFRMNLGRP_REPORT XFRMNLGRP_REPORT
80c9abaa SS	569	XFRMNLGRP_MIGRATE,
80c9abaa SS	570	#define XFRMNLGRP_MIGRATE XFRMNLGRP_MIGRATE
3a2dfbe8 MW	571	XFRMNLGRP_MAPPING,
3a2dfbe8 MW	572	#define XFRMNLGRP_MAPPING XFRMNLGRP_MAPPING
ac6d439d PM	573	__XFRMNLGRP_MAX
	574	};
	575	#define XFRMNLGRP_MAX (__XFRMNLGRP_MAX - 1)
1da177e4 LT	576
1da177e4 LT	577	#endif /* _LINUX_XFRM_H */