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freebsd-skq/sys/opencrypto/cryptodev.h
Sam Leffler 6810ad6f2a Overhaul driver/subsystem api's: 
o make all crypto drivers have a device_t; pseudo drivers like the s/w
  crypto driver synthesize one
o change the api between the crypto subsystem and drivers to use kobj;
  cryptodev_if.m defines this api
o use the fact that all crypto drivers now have a device_t to add support
  for specifying which of several potential devices to use when doing
  crypto operations
o add new ioctls that allow user apps to select a specific crypto device
  to use (previous ioctls maintained for compatibility)
o overhaul crypto subsystem code to eliminate lots of cruft and hide
  implementation details from drivers
o bring in numerous fixes from Michale Richardson/hifn; mostly for
  795x parts
o add an optional mechanism for mmap'ing the hifn 795x public key h/w
  to user space for use by openssl (not enabled by default)
o update crypto test tools to use new ioctl's and add cmd line options
  to specify a device to use for tests

These changes will also enable much future work on improving the core
crypto subsystem; including proper load balancing and interposing code
between the core and drivers to dispatch small operations to the s/w
driver as appropriate.

These changes were instigated by the work of Michael Richardson.

Reviewed by:	pjd
Approved by:	re
2007-03-21 03:42:51 +00:00

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/* $FreeBSD$ */
/* $OpenBSD: cryptodev.h,v 1.31 2002/06/11 11:14:29 beck Exp $ */
/*-
* The author of this code is Angelos D. Keromytis (angelos@cis.upenn.edu)
* Copyright (c) 2002-2006 Sam Leffler, Errno Consulting
*
* This code was written by Angelos D. Keromytis in Athens, Greece, in
* February 2000. Network Security Technologies Inc. (NSTI) kindly
* supported the development of this code.
*
* Copyright (c) 2000 Angelos D. Keromytis
*
* Permission to use, copy, and modify this software with or without fee
* is hereby granted, provided that this entire notice is included in
* all source code 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, NONE OF THE AUTHORS MAKES ANY
* REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE
* MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR
* PURPOSE.
*
* Copyright (c) 2001 Theo de Raadt
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Effort sponsored in part by the Defense Advanced Research Projects
* Agency (DARPA) and Air Force Research Laboratory, Air Force
* Materiel Command, USAF, under agreement number F30602-01-2-0537.
*
*/
#ifndef _CRYPTO_CRYPTO_H_
#define _CRYPTO_CRYPTO_H_
#include <sys/ioccom.h>
/* Some initial values */
#define CRYPTO_DRIVERS_INITIAL 4
#define CRYPTO_SW_SESSIONS 32
/* Hash values */
#define NULL_HASH_LEN 16
#define MD5_HASH_LEN 16
#define SHA1_HASH_LEN 20
#define RIPEMD160_HASH_LEN 20
#define SHA2_256_HASH_LEN 32
#define SHA2_384_HASH_LEN 48
#define SHA2_512_HASH_LEN 64
#define MD5_KPDK_HASH_LEN 16
#define SHA1_KPDK_HASH_LEN 20
/* Maximum hash algorithm result length */
#define HASH_MAX_LEN SHA2_512_HASH_LEN /* Keep this updated */
/* HMAC values */
#define NULL_HMAC_BLOCK_LEN 64
#define MD5_HMAC_BLOCK_LEN 64
#define SHA1_HMAC_BLOCK_LEN 64
#define RIPEMD160_HMAC_BLOCK_LEN 64
#define SHA2_256_HMAC_BLOCK_LEN 64
#define SHA2_384_HMAC_BLOCK_LEN 128
#define SHA2_512_HMAC_BLOCK_LEN 128
/* Maximum HMAC block length */
#define HMAC_MAX_BLOCK_LEN SHA2_512_HMAC_BLOCK_LEN /* Keep this updated */
#define HMAC_IPAD_VAL 0x36
#define HMAC_OPAD_VAL 0x5C
/* Encryption algorithm block sizes */
#define NULL_BLOCK_LEN 4
#define DES_BLOCK_LEN 8
#define DES3_BLOCK_LEN 8
#define BLOWFISH_BLOCK_LEN 8
#define SKIPJACK_BLOCK_LEN 8
#define CAST128_BLOCK_LEN 8
#define RIJNDAEL128_BLOCK_LEN 16
#define AES_BLOCK_LEN RIJNDAEL128_BLOCK_LEN
#define EALG_MAX_BLOCK_LEN AES_BLOCK_LEN /* Keep this updated */
#define CRYPTO_ALGORITHM_MIN 1
#define CRYPTO_DES_CBC 1
#define CRYPTO_3DES_CBC 2
#define CRYPTO_BLF_CBC 3
#define CRYPTO_CAST_CBC 4
#define CRYPTO_SKIPJACK_CBC 5
#define CRYPTO_MD5_HMAC 6
#define CRYPTO_SHA1_HMAC 7
#define CRYPTO_RIPEMD160_HMAC 8
#define CRYPTO_MD5_KPDK 9
#define CRYPTO_SHA1_KPDK 10
#define CRYPTO_RIJNDAEL128_CBC 11 /* 128 bit blocksize */
#define CRYPTO_AES_CBC 11 /* 128 bit blocksize -- the same as above */
#define CRYPTO_ARC4 12
#define CRYPTO_MD5 13
#define CRYPTO_SHA1 14
#define CRYPTO_NULL_HMAC 15
#define CRYPTO_NULL_CBC 16
#define CRYPTO_DEFLATE_COMP 17 /* Deflate compression algorithm */
#define CRYPTO_SHA2_256_HMAC 18
#define CRYPTO_SHA2_384_HMAC 19
#define CRYPTO_SHA2_512_HMAC 20
#define CRYPTO_ALGORITHM_MAX 20 /* Keep updated - see below */
/* Algorithm flags */
#define CRYPTO_ALG_FLAG_SUPPORTED 0x01 /* Algorithm is supported */
#define CRYPTO_ALG_FLAG_RNG_ENABLE 0x02 /* Has HW RNG for DH/DSA */
#define CRYPTO_ALG_FLAG_DSA_SHA 0x04 /* Can do SHA on msg */
/*
* Crypto driver/device flags. They can set in the crid
* parameter when creating a session or submitting a key
* op to affect the device/driver assigned. If neither
* of these are specified then the crid is assumed to hold
* the driver id of an existing (and suitable) device that
* must be used to satisfy the request.
*/
#define CRYPTO_FLAG_HARDWARE 0x01000000 /* hardware accelerated */
#define CRYPTO_FLAG_SOFTWARE 0x02000000 /* software implementation */
/* NB: deprecated */
struct session_op {
u_int32_t cipher; /* ie. CRYPTO_DES_CBC */
u_int32_t mac; /* ie. CRYPTO_MD5_HMAC */
u_int32_t keylen; /* cipher key */
caddr_t key;
int mackeylen; /* mac key */
caddr_t mackey;
u_int32_t ses; /* returns: session # */
};
struct session2_op {
u_int32_t cipher; /* ie. CRYPTO_DES_CBC */
u_int32_t mac; /* ie. CRYPTO_MD5_HMAC */
u_int32_t keylen; /* cipher key */
caddr_t key;
int mackeylen; /* mac key */
caddr_t mackey;
u_int32_t ses; /* returns: session # */
int crid; /* driver id + flags (rw) */
int pad[4]; /* for future expansion */
};
struct crypt_op {
u_int32_t ses;
u_int16_t op; /* i.e. COP_ENCRYPT */
#define COP_ENCRYPT 1
#define COP_DECRYPT 2
u_int16_t flags;
#define COP_F_BATCH 0x0008 /* Batch op if possible */
u_int len;
caddr_t src, dst; /* become iov[] inside kernel */
caddr_t mac; /* must be big enough for chosen MAC */
caddr_t iv;
};
/*
* Parameters for looking up a crypto driver/device by
* device name or by id. The latter are returned for
* created sessions (crid) and completed key operations.
*/
struct crypt_find_op {
int crid; /* driver id + flags */
char name[32]; /* device/driver name */
};
/* bignum parameter, in packed bytes, ... */
struct crparam {
caddr_t crp_p;
u_int crp_nbits;
};
#define CRK_MAXPARAM 8
struct crypt_kop {
u_int crk_op; /* ie. CRK_MOD_EXP or other */
u_int crk_status; /* return status */
u_short crk_iparams; /* # of input parameters */
u_short crk_oparams; /* # of output parameters */
u_int crk_crid; /* NB: only used by CIOCKEY2 (rw) */
struct crparam crk_param[CRK_MAXPARAM];
};
#define CRK_ALGORITM_MIN 0
#define CRK_MOD_EXP 0
#define CRK_MOD_EXP_CRT 1
#define CRK_DSA_SIGN 2
#define CRK_DSA_VERIFY 3
#define CRK_DH_COMPUTE_KEY 4
#define CRK_ALGORITHM_MAX 4 /* Keep updated - see below */
#define CRF_MOD_EXP (1 << CRK_MOD_EXP)
#define CRF_MOD_EXP_CRT (1 << CRK_MOD_EXP_CRT)
#define CRF_DSA_SIGN (1 << CRK_DSA_SIGN)
#define CRF_DSA_VERIFY (1 << CRK_DSA_VERIFY)
#define CRF_DH_COMPUTE_KEY (1 << CRK_DH_COMPUTE_KEY)
/*
* done against open of /dev/crypto, to get a cloned descriptor.
* Please use F_SETFD against the cloned descriptor.
*/
#define CRIOGET _IOWR('c', 100, u_int32_t)
#define CRIOASYMFEAT CIOCASYMFEAT
#define CRIOFINDDEV CIOCFINDDEV
/* the following are done against the cloned descriptor */
#define CIOCGSESSION _IOWR('c', 101, struct session_op)
#define CIOCFSESSION _IOW('c', 102, u_int32_t)
#define CIOCCRYPT _IOWR('c', 103, struct crypt_op)
#define CIOCKEY _IOWR('c', 104, struct crypt_kop)
#define CIOCASYMFEAT _IOR('c', 105, u_int32_t)
#define CIOCGSESSION2 _IOWR('c', 106, struct session2_op)
#define CIOCKEY2 _IOWR('c', 107, struct crypt_kop)
#define CIOCFINDDEV _IOWR('c', 108, struct crypt_find_op)
struct cryptotstat {
struct timespec acc; /* total accumulated time */
struct timespec min; /* min time */
struct timespec max; /* max time */
u_int32_t count; /* number of observations */
};
struct cryptostats {
u_int32_t cs_ops; /* symmetric crypto ops submitted */
u_int32_t cs_errs; /* symmetric crypto ops that failed */
u_int32_t cs_kops; /* asymetric/key ops submitted */
u_int32_t cs_kerrs; /* asymetric/key ops that failed */
u_int32_t cs_intrs; /* crypto swi thread activations */
u_int32_t cs_rets; /* crypto return thread activations */
u_int32_t cs_blocks; /* symmetric op driver block */
u_int32_t cs_kblocks; /* symmetric op driver block */
/*
* When CRYPTO_TIMING is defined at compile time and the
* sysctl debug.crypto is set to 1, the crypto system will
* accumulate statistics about how long it takes to process
* crypto requests at various points during processing.
*/
struct cryptotstat cs_invoke; /* crypto_dipsatch -> crypto_invoke */
struct cryptotstat cs_done; /* crypto_invoke -> crypto_done */
struct cryptotstat cs_cb; /* crypto_done -> callback */
struct cryptotstat cs_finis; /* callback -> callback return */
};
#ifdef _KERNEL
/* Standard initialization structure beginning */
struct cryptoini {
int cri_alg; /* Algorithm to use */
int cri_klen; /* Key length, in bits */
int cri_mlen; /* Number of bytes we want from the
entire hash. 0 means all. */
caddr_t cri_key; /* key to use */
u_int8_t cri_iv[EALG_MAX_BLOCK_LEN]; /* IV to use */
struct cryptoini *cri_next;
};
/* Describe boundaries of a single crypto operation */
struct cryptodesc {
int crd_skip; /* How many bytes to ignore from start */
int crd_len; /* How many bytes to process */
int crd_inject; /* Where to inject results, if applicable */
int crd_flags;
#define CRD_F_ENCRYPT 0x01 /* Set when doing encryption */
#define CRD_F_IV_PRESENT 0x02 /* When encrypting, IV is already in
place, so don't copy. */
#define CRD_F_IV_EXPLICIT 0x04 /* IV explicitly provided */
#define CRD_F_DSA_SHA_NEEDED 0x08 /* Compute SHA-1 of buffer for DSA */
#define CRD_F_KEY_EXPLICIT 0x10 /* Key explicitly provided */
#define CRD_F_COMP 0x0f /* Set when doing compression */
struct cryptoini CRD_INI; /* Initialization/context data */
#define crd_iv CRD_INI.cri_iv
#define crd_key CRD_INI.cri_key
#define crd_alg CRD_INI.cri_alg
#define crd_klen CRD_INI.cri_klen
struct cryptodesc *crd_next;
};
/* Structure describing complete operation */
struct cryptop {
TAILQ_ENTRY(cryptop) crp_next;
u_int64_t crp_sid; /* Session ID */
int crp_ilen; /* Input data total length */
int crp_olen; /* Result total length */
int crp_etype; /*
* Error type (zero means no error).
* All error codes except EAGAIN
* indicate possible data corruption (as in,
* the data have been touched). On all
* errors, the crp_sid may have changed
* (reset to a new one), so the caller
* should always check and use the new
* value on future requests.
*/
int crp_flags;
#define CRYPTO_F_IMBUF 0x0001 /* Input/output are mbuf chains */
#define CRYPTO_F_IOV 0x0002 /* Input/output are uio */
#define CRYPTO_F_REL 0x0004 /* Must return data in same place */
#define CRYPTO_F_BATCH 0x0008 /* Batch op if possible */
#define CRYPTO_F_CBIMM 0x0010 /* Do callback immediately */
#define CRYPTO_F_DONE 0x0020 /* Operation completed */
#define CRYPTO_F_CBIFSYNC 0x0040 /* Do CBIMM if op is synchronous */
caddr_t crp_buf; /* Data to be processed */
caddr_t crp_opaque; /* Opaque pointer, passed along */
struct cryptodesc *crp_desc; /* Linked list of processing descriptors */
int (*crp_callback)(struct cryptop *); /* Callback function */
struct bintime crp_tstamp; /* performance time stamp */
};
#define CRYPTO_BUF_CONTIG 0x0
#define CRYPTO_BUF_IOV 0x1
#define CRYPTO_BUF_MBUF 0x2
#define CRYPTO_OP_DECRYPT 0x0
#define CRYPTO_OP_ENCRYPT 0x1
/*
* Hints passed to process methods.
*/
#define CRYPTO_HINT_MORE 0x1 /* more ops coming shortly */
struct cryptkop {
TAILQ_ENTRY(cryptkop) krp_next;
u_int krp_op; /* ie. CRK_MOD_EXP or other */
u_int krp_status; /* return status */
u_short krp_iparams; /* # of input parameters */
u_short krp_oparams; /* # of output parameters */
u_int krp_crid; /* desired device, etc. */
u_int32_t krp_hid;
struct crparam krp_param[CRK_MAXPARAM]; /* kvm */
int (*krp_callback)(struct cryptkop *);
};
/*
* Session ids are 64 bits. The lower 32 bits contain a "local id" which
* is a driver-private session identifier. The upper 32 bits contain a
* "hardware id" used by the core crypto code to identify the driver and
* a copy of the driver's capabilities that can be used by client code to
* optimize operation.
*/
#define CRYPTO_SESID2HID(_sid) (((_sid) >> 32) & 0x00ffffff)
#define CRYPTO_SESID2CAPS(_sid) (((_sid) >> 32) & 0xff000000)
#define CRYPTO_SESID2LID(_sid) (((u_int32_t) (_sid)) & 0xffffffff)
MALLOC_DECLARE(M_CRYPTO_DATA);
extern int crypto_newsession(u_int64_t *sid, struct cryptoini *cri, int hard);
extern int crypto_freesession(u_int64_t sid);
#define CRYPTOCAP_F_HARDWARE CRYPTO_FLAG_HARDWARE
#define CRYPTOCAP_F_SOFTWARE CRYPTO_FLAG_SOFTWARE
#define CRYPTOCAP_F_SYNC 0x04000000 /* operates synchronously */
extern int32_t crypto_get_driverid(device_t dev, int flags);
extern int crypto_find_driver(const char *);
extern device_t crypto_find_device_byhid(int hid);
extern int crypto_getcaps(int hid);
extern int crypto_register(u_int32_t driverid, int alg, u_int16_t maxoplen,
u_int32_t flags);
extern int crypto_kregister(u_int32_t, int, u_int32_t);
extern int crypto_unregister(u_int32_t driverid, int alg);
extern int crypto_unregister_all(u_int32_t driverid);
extern int crypto_dispatch(struct cryptop *crp);
extern int crypto_kdispatch(struct cryptkop *);
#define CRYPTO_SYMQ 0x1
#define CRYPTO_ASYMQ 0x2
extern int crypto_unblock(u_int32_t, int);
extern void crypto_done(struct cryptop *crp);
extern void crypto_kdone(struct cryptkop *);
extern int crypto_getfeat(int *);
extern void crypto_freereq(struct cryptop *crp);
extern struct cryptop *crypto_getreq(int num);
extern int crypto_usercrypto; /* userland may do crypto requests */
extern int crypto_userasymcrypto; /* userland may do asym crypto reqs */
extern int crypto_devallowsoft; /* only use hardware crypto */
/*
* Crypto-related utility routines used mainly by drivers.
*
* XXX these don't really belong here; but for now they're
* kept apart from the rest of the system.
*/
struct uio;
extern void cuio_copydata(struct uio* uio, int off, int len, caddr_t cp);
extern void cuio_copyback(struct uio* uio, int off, int len, caddr_t cp);
extern struct iovec *cuio_getptr(struct uio *uio, int loc, int *off);
extern int cuio_apply(struct uio *uio, int off, int len,
int (*f)(void *, void *, u_int), void *arg);
extern void crypto_copyback(int flags, caddr_t buf, int off, int size,
caddr_t in);
extern void crypto_copydata(int flags, caddr_t buf, int off, int size,
caddr_t out);
extern int crypto_apply(int flags, caddr_t buf, int off, int len,
int (*f)(void *, void *, u_int), void *arg);
#endif /* _KERNEL */
#endif /* _CRYPTO_CRYPTO_H_ */
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