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/* $OpenBSD: ip_ipsp.h,v 1.10 1997/07/02 06:58:43 provos Exp $ */
/*
* The author of this code is John Ioannidis, ji@tla.org,
* (except when noted otherwise).
*
* This code was written for BSD/OS in Athens, Greece, in November 1995.
*
* Ported to OpenBSD and NetBSD, with additional transforms, in December 1996,
* by Angelos D. Keromytis, kermit@forthnet.gr.
*
* Copyright (C) 1995, 1996, 1997 by John Ioannidis and Angelos D. Keromytis.
*
* Permission to use, copy, and modify this software without fee
* is hereby granted, provided that this entire notice is included in
* all copies of any software which is or includes a copy or
* modification of this software.
*
* THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTY. IN PARTICULAR, NEITHER AUTHOR MAKES ANY
* REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE
* MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR
* PURPOSE.
*/
/*
* IPSP global definitions.
*/
struct tdb /* tunnel descriptor block */
{
struct tdb *tdb_hnext; /* next in hash chain */
struct tdb *tdb_onext; /* next in output */
struct tdb *tdb_inext; /* next in input (prev!) */
struct xformsw *tdb_xform; /* transformation to use */
u_int32_t tdb_spi; /* SPI to use */
u_int32_t tdb_flags; /* Flags related to this TDB */
#define TDBF_UNIQUE 0x00001 /* This should not be used by others */
#define TDBF_TIMER 0x00002 /* Absolute expiration timer in use */
#define TDBF_BYTES 0x00004 /* Check the byte counters */
#define TDBF_PACKETS 0x00008 /* Check the packet counters */
#define TDBF_INVALID 0x00010 /* This SPI is not valid yet/anymore */
#define TDBF_FIRSTUSE 0x00020 /* Expire after first use */
#define TDBF_RELATIVE 0x00040 /* Expire after X secs from establ. */
#define TDBF_SOFT_TIMER 0x00080 /* Soft expiration */
#define TDBF_SOFT_BYTES 0x00100 /* Soft expiration */
#define TDBF_SOFT_PACKETS 0x00200 /* Soft expiration */
#define TDBF_SOFT_FIRSTUSE 0x00400 /* Soft expiration */
#define TDBF_SOFT_RELATIVE 0x00800 /* Soft expiration */
#define TDBF_TUNNELING 0x01000 /* Do IP-in-IP encapsulation */
#define TDBF_SAME_TTL 0x02000 /* Keep the packet TTL, in tunneling */
u_int64_t tdb_exp_packets; /* Expire after so many packets s|r */
u_int64_t tdb_soft_packets; /* Expiration warning */
u_int64_t tdb_cur_packets; /* Current number of packets s|r'ed */
u_int64_t tdb_exp_bytes; /* Expire after so many bytes passed */
u_int64_t tdb_soft_bytes; /* Expiration warning */
u_int64_t tdb_cur_bytes; /* Current count of bytes */
u_int64_t tdb_exp_timeout; /* When does the SPI expire */
u_int64_t tdb_soft_timeout; /* Send a soft-expire warning */
u_int64_t tdb_established; /* When was the SPI established */
u_int64_t tdb_soft_relative ; /* Soft warning */
u_int64_t tdb_exp_relative; /* Expire if tdb_established +
tdb_exp_relative <= curtime */
u_int64_t tdb_first_use; /* When was it first used */
u_int64_t tdb_soft_first_use; /* Soft warning */
u_int64_t tdb_exp_first_use; /* Expire if tdb_first_use +
tdb_exp_first_use <= curtime */
struct in_addr tdb_dst; /* dest address for this SPI */
struct in_addr tdb_src; /* source address for this SPI,
* used when tunneling */
struct in_addr tdb_osrc;
struct in_addr tdb_odst; /* Source and destination addresses
* of outter IP header if we're doing
* tunneling */
caddr_t tdb_xdata; /* transformation data (opaque) */
u_int16_t tdb_sport; /* Source port, if applicable */
u_int16_t tdb_dport; /* Destination port, if applicable */
u_int8_t tdb_ttl; /* TTL used in tunneling */
u_int8_t tdb_proto; /* Protocol carried */
u_int16_t tdb_foo; /* alignment */
};
#define TDB_HASHMOD 257
struct xformsw
{
u_short xf_type; /* Unique ID of xform */
u_short xf_flags; /* flags (see below) */
char *xf_name; /* human-readable name */
int (*xf_attach)(void); /* called at config time */
int (*xf_init)(struct tdb *, struct xformsw *, struct mbuf *); /* xform initialization */
int (*xf_zeroize)(struct tdb *); /* termination */
struct mbuf *(*xf_input)(struct mbuf *, struct tdb *); /* called when packet received */
int (*xf_output)(struct mbuf *, struct sockaddr_encap *, struct tdb *, struct mbuf **); /* called when packet sent */
};
#define XF_IP4 1 /* IP inside IP */
#define XF_AHMD5 2 /* AH MD5 */
#define XF_AHSHA1 3 /* AH SHA */
#define XF_ESPDES 4 /* ESP DES-CBC */
#define XF_ESP3DES 5 /* ESP DES3-CBC */
#define XF_AHHMACMD5 6 /* AH-HMAC-MD5 with opt replay prot */
#define XF_AHHMACSHA1 7 /* AH-HMAC-SHA1 with opt replay prot */
#define XF_ESPDESMD5 8 /* ESP DES-CBC + MD5 */
#define XF_ESP3DESMD5 9 /* ESP 3DES-CBC + MD5 */
#define XF_NEWESP 10 /* The new ESP transforms */
#define XF_NEWAH 11 /* The new AH transforms */
#define XFT_AUTH 0x0001
#define XFT_CONF 0x0100
#define IPSEC_ZEROES_SIZE 64
#if BYTE_ORDER == LITTLE_ENDIAN
static __inline u_int64_t
htonq(u_int64_t q)
{
register u_int32_t u, l;
u = q >> 32;
l = (u_int32_t) q;
return htonl(u) | ((u_int64_t)htonl(l) << 32);
}
#define ntohq(_x) htonq(_x)
#elif BYTE_ORDER == BIG_ENDIAN
#define htonq(_x) (_x)
#define ntohq(_x) htonq(_x)
#else
#error "Please fix <machine/endian.h>"
#endif
extern unsigned char ipseczeroes[];
#ifdef _KERNEL
#undef ENCDEBUG
extern int encdebug;
struct tdb *tdbh[TDB_HASHMOD];
extern struct xformsw xformsw[], *xformswNXFORMSW;
extern u_int32_t reserve_spi(u_int32_t, struct in_addr, int *);
extern struct tdb *gettdb(u_int32_t, struct in_addr);
extern void puttdb(struct tdb *);
extern int tdb_delete(struct tdb *, int);
extern int ipe4_attach(void), ipe4_init(struct tdb *, struct xformsw *, struct mbuf *), ipe4_zeroize(struct tdb *);
extern int ipe4_output(struct mbuf *, struct sockaddr_encap *, struct tdb *, struct mbuf **);
extern void ipe4_input __P((struct mbuf *, ...));
extern int ahmd5_attach(void), ahmd5_init(struct tdb *, struct xformsw *, struct mbuf *), ahmd5_zeroize(struct tdb *);
extern int ahmd5_output(struct mbuf *, struct sockaddr_encap *, struct tdb *, struct mbuf **);
extern struct mbuf *ahmd5_input(struct mbuf *, struct tdb *);
extern int ahsha1_attach(void), ahsha1_init(struct tdb *, struct xformsw *, struct mbuf *), ahsha1_zeroize(struct tdb *);
extern int ahsha1_output(struct mbuf *, struct sockaddr_encap *, struct tdb *, struct mbuf **);
extern struct mbuf *ahsha1_input(struct mbuf *, struct tdb *);
extern int ahhmacmd5_attach(void), ahhmacmd5_init(struct tdb *, struct xformsw *, struct mbuf *), ahhmacmd5_zeroize(struct tdb *);
extern int ahhmacmd5_output(struct mbuf *, struct sockaddr_encap *, struct tdb *, struct mbuf **);
extern struct mbuf *ahhmacmd5_input(struct mbuf *, struct tdb *);
extern int ahhmacsha1_attach(void), ahhmacsha1_init(struct tdb *, struct xformsw *, struct mbuf *), ahhmacsha1_zeroize(struct tdb *);
extern int ahhmacsha1_output(struct mbuf *, struct sockaddr_encap *, struct tdb *, struct mbuf **);
extern struct mbuf *ahhmacsha1_input(struct mbuf *, struct tdb *);
extern int espdes_attach(void), espdes_init(struct tdb *, struct xformsw *, struct mbuf *), espdes_zeroize(struct tdb *);
extern int espdes_output(struct mbuf *, struct sockaddr_encap *, struct tdb *, struct mbuf **);
extern struct mbuf *espdes_input(struct mbuf *, struct tdb *);
extern int esp3des_attach(void), esp3des_init(struct tdb *, struct xformsw *, struct mbuf *), esp3des_zeroize(struct tdb *);
extern int esp3des_output(struct mbuf *, struct sockaddr_encap *, struct tdb *, struct mbuf **);
extern struct mbuf *esp3des_input(struct mbuf *, struct tdb *);
extern int espdesmd5_attach(void), espdesmd5_init(struct tdb *, struct xformsw *, struct mbuf *), espdesmd5_zeroize(struct tdb *);
extern int espdesmd5_output(struct mbuf *, struct sockaddr_encap *, struct tdb *, struct mbuf **);
extern struct mbuf *espdesmd5_input(struct mbuf *, struct tdb *);
extern int esp3desmd5_attach(void), esp3desmd5_init(struct tdb *, struct xformsw *, struct mbuf *), esp3desmd5_zeroize(struct tdb *);
extern int esp3desmd5_output(struct mbuf *, struct sockaddr_encap *, struct tdb *, struct mbuf **);
extern struct mbuf *esp3desmd5_input(struct mbuf *, struct tdb *);
extern caddr_t m_pad(struct mbuf *, int);
extern int checkreplaywindow32(u_int32_t, u_int32_t, u_int32_t *, u_int32_t, u_int32_t *);
extern int checkreplaywindow64(u_int64_t, u_int64_t *, u_int64_t, u_int64_t *);
#endif
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