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- #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
- {
- __be32 a4;
- __be32 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;
- __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;
- };
-
- struct xfrm_algo {
- char alg_name[64];
- unsigned int alg_key_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,
- XFRMA_POLICY,
- 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,
- XFRMA_POLICY_TYPE, /* struct xfrm_userpolicy_type */
- XFRMA_MIGRATE,
- XFRMA_ALG_AEAD, /* struct xfrm_algo_aead */
- XFRMA_KMADDRESS, /* struct xfrm_user_kmaddress */
- __XFRMA_MAX
-
- #define XFRMA_MAX (__XFRMA_MAX - 1)
- };
-
- 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_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 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
- };
-
- 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;
- };
-
- /* backwards compatibility for userspace */
- #define XFRMGRP_ACQUIRE 1
- #define XFRMGRP_EXPIRE 2
- #define XFRMGRP_SA 4
- #define XFRMGRP_POLICY 8
- #define XFRMGRP_REPORT 0x20
-
- 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 */
-