1 files changed, 506 insertions, 0 deletions

diff --git a/include/uapi/linux/xfrm.h b/include/uapi/linux/xfrm.h
new file mode 100644
index 000000000000..28e493b5b94c
--- /dev/null
+++ b/include/uapi/linux/xfrm.h
@@ -0,0 +1,506 @@
+#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;
+};
+
+#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_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_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
+#define XFRM_STATE_ALIGN4       64
+#define XFRM_STATE_ESN          128
+};
+
+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;
+};
+
+#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 */