--- /dev/null
+/* 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>
+
+/* 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_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_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
+
+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;
+};
+#define XFRM_OFFLOAD_IPV6 1
+#define XFRM_OFFLOAD_INBOUND 2
+
+/* 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 */
projects / cross.git / blobdiff