Release 4.7 include/uapi/linux/xfrm.h

#ifndef _LINUX_XFRM_H

#define _LINUX_XFRM_H

#include <linux/in6.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 {
	
__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[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;
	
__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[0];
};


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


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[0];
};


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[0];
};


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_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_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;
	
__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,		/* unsigned long  */
	
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_esn */
	
XFRMA_SA_EXTRA_FLAGS,	/* __u32 */
	
XFRMA_PROTO,		/* __u8 */
	
XFRMA_ADDRESS_FILTER,	/* struct xfrm_address_filter */
	
XFRMA_PAD,
	
__XFRMA_MAX


#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


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;
};

#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 */
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