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freebsd-skq/sys/opencrypto/cryptodev.h
Alan Somers e6f6d0c9bc crypto(9): add CRYPTO_BUF_VMPAGE 
crypto(9) functions can now be used on buffers composed of an array of
vm_page_t structures, such as those stored in an unmapped struct bio.  It
requires the running to kernel to support the direct memory map, so not all
architectures can use it.

Reviewed by:	markj, kib, jhb, mjg, mat, bcr (manpages)
MFC after:	1 week
Sponsored by:	Axcient
Differential Revision:	https://reviews.freebsd.org/D25671
2020-08-26 02:37:42 +00:00

735 lines
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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
* Copyright (c) 2014 The FreeBSD Foundation
* All rights reserved.
*
* Portions of this software were developed by John-Mark Gurney
* under sponsorship of the FreeBSD Foundation and
* Rubicon Communications, LLC (Netgate).
*
* 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>
#ifdef _KERNEL
#include <opencrypto/_cryptodev.h>
#include <sys/_task.h>
#endif
/* Some initial values */
#define CRYPTO_DRIVERS_INITIAL 4
/* Hash values */
#define NULL_HASH_LEN 16
#define SHA1_HASH_LEN 20
#define RIPEMD160_HASH_LEN 20
#define SHA2_224_HASH_LEN 28
#define SHA2_256_HASH_LEN 32
#define SHA2_384_HASH_LEN 48
#define SHA2_512_HASH_LEN 64
#define AES_GMAC_HASH_LEN 16
#define POLY1305_HASH_LEN 16
#define AES_CBC_MAC_HASH_LEN 16
/* Maximum hash algorithm result length */
#define HASH_MAX_LEN SHA2_512_HASH_LEN /* Keep this updated */
#define SHA1_BLOCK_LEN 64
#define RIPEMD160_BLOCK_LEN 64
#define SHA2_224_BLOCK_LEN 64
#define SHA2_256_BLOCK_LEN 64
#define SHA2_384_BLOCK_LEN 128
#define SHA2_512_BLOCK_LEN 128
/* HMAC values */
#define NULL_HMAC_BLOCK_LEN 64
/* Maximum HMAC block length */
#define HMAC_MAX_BLOCK_LEN SHA2_512_BLOCK_LEN /* Keep this updated */
#define HMAC_IPAD_VAL 0x36
#define HMAC_OPAD_VAL 0x5C
/* HMAC Key Length */
#define AES_128_GMAC_KEY_LEN 16
#define AES_192_GMAC_KEY_LEN 24
#define AES_256_GMAC_KEY_LEN 32
#define AES_128_CBC_MAC_KEY_LEN 16
#define AES_192_CBC_MAC_KEY_LEN 24
#define AES_256_CBC_MAC_KEY_LEN 32
#define POLY1305_KEY_LEN 32
/* Encryption algorithm block sizes */
#define NULL_BLOCK_LEN 4 /* IPsec to maintain alignment */
#define RIJNDAEL128_BLOCK_LEN 16
#define AES_BLOCK_LEN 16
#define AES_ICM_BLOCK_LEN 1
#define CAMELLIA_BLOCK_LEN 16
#define CHACHA20_NATIVE_BLOCK_LEN 64
#define EALG_MAX_BLOCK_LEN CHACHA20_NATIVE_BLOCK_LEN /* Keep this updated */
/* IV Lengths */
#define AES_GCM_IV_LEN 12
#define AES_CCM_IV_LEN 12
#define AES_XTS_IV_LEN 8
#define AES_XTS_ALPHA 0x87 /* GF(2^128) generator polynomial */
/* Min and Max Encryption Key Sizes */
#define NULL_MIN_KEY 0
#define NULL_MAX_KEY 256 /* 2048 bits, max key */
#define RIJNDAEL_MIN_KEY 16
#define RIJNDAEL_MAX_KEY 32
#define AES_MIN_KEY RIJNDAEL_MIN_KEY
#define AES_MAX_KEY RIJNDAEL_MAX_KEY
#define AES_XTS_MIN_KEY (2 * AES_MIN_KEY)
#define AES_XTS_MAX_KEY (2 * AES_MAX_KEY)
#define CAMELLIA_MIN_KEY 16
#define CAMELLIA_MAX_KEY 32
/* Maximum hash algorithm result length */
#define AALG_MAX_RESULT_LEN 64 /* 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_CAMELLIA_CBC 21
#define CRYPTO_AES_XTS 22
#define CRYPTO_AES_ICM 23 /* commonly known as CTR mode */
#define CRYPTO_AES_NIST_GMAC 24 /* GMAC only */
#define CRYPTO_AES_NIST_GCM_16 25 /* 16 byte ICV */
#ifdef _KERNEL
#define CRYPTO_AES_128_NIST_GMAC 26 /* auth side */
#define CRYPTO_AES_192_NIST_GMAC 27 /* auth side */
#define CRYPTO_AES_256_NIST_GMAC 28 /* auth side */
#endif
#define CRYPTO_BLAKE2B 29 /* Blake2b hash */
#define CRYPTO_BLAKE2S 30 /* Blake2s hash */
#define CRYPTO_CHACHA20 31 /* Chacha20 stream cipher */
#define CRYPTO_SHA2_224_HMAC 32
#define CRYPTO_RIPEMD160 33
#define CRYPTO_SHA2_224 34
#define CRYPTO_SHA2_256 35
#define CRYPTO_SHA2_384 36
#define CRYPTO_SHA2_512 37
#define CRYPTO_POLY1305 38
#define CRYPTO_AES_CCM_CBC_MAC 39 /* auth side */
#define CRYPTO_AES_CCM_16 40 /* cipher side */
#define CRYPTO_ALGORITHM_MAX 40 /* Keep updated - see below */
#define CRYPTO_ALGO_VALID(x) ((x) >= CRYPTO_ALGORITHM_MIN && \
(x) <= CRYPTO_ALGORITHM_MAX)
/* 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 */
/* Does the kernel support vmpage buffers on this platform? */
#ifdef __powerpc__
#define CRYPTO_MAY_HAVE_VMPAGE 1
#else
#define CRYPTO_MAY_HAVE_VMPAGE ( PMAP_HAS_DMAP )
#endif
/* Does the currently running system support vmpage buffers on this platform? */
#define CRYPTO_HAS_VMPAGE ( PMAP_HAS_DMAP )
/* NB: deprecated */
struct session_op {
u_int32_t cipher; /* ie. CRYPTO_AES_CBC */
u_int32_t mac; /* ie. CRYPTO_SHA2_256_HMAC */
u_int32_t keylen; /* cipher key */
c_caddr_t key;
int mackeylen; /* mac key */
c_caddr_t mackey;
u_int32_t ses; /* returns: session # */
};
/*
* session and crypt _op structs are used by userspace programs to interact
* with /dev/crypto. Confusingly, the internal kernel interface is named
* "cryptop" (no underscore).
*/
struct session2_op {
u_int32_t cipher; /* ie. CRYPTO_AES_CBC */
u_int32_t mac; /* ie. CRYPTO_SHA2_256_HMAC */
u_int32_t keylen; /* cipher key */
c_caddr_t key;
int mackeylen; /* mac key */
c_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_CIPHER_FIRST 0x0001 /* Cipher before MAC. */
#define COP_F_BATCH 0x0008 /* Batch op if possible */
u_int len;
c_caddr_t src; /* become iov[] inside kernel */
caddr_t dst;
caddr_t mac; /* must be big enough for chosen MAC */
c_caddr_t iv;
};
/* op and flags the same as crypt_op */
struct crypt_aead {
u_int32_t ses;
u_int16_t op; /* i.e. COP_ENCRYPT */
u_int16_t flags;
u_int len;
u_int aadlen;
u_int ivlen;
c_caddr_t src; /* become iov[] inside kernel */
caddr_t dst;
c_caddr_t aad; /* additional authenticated data */
caddr_t tag; /* must fit for chosen TAG length */
c_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)
#define CIOCCRYPTAEAD _IOWR('c', 109, struct crypt_aead)
struct cryptostats {
uint64_t cs_ops; /* symmetric crypto ops submitted */
uint64_t cs_errs; /* symmetric crypto ops that failed */
uint64_t cs_kops; /* asymetric/key ops submitted */
uint64_t cs_kerrs; /* asymetric/key ops that failed */
uint64_t cs_intrs; /* crypto swi thread activations */
uint64_t cs_rets; /* crypto return thread activations */
uint64_t cs_blocks; /* symmetric op driver block */
uint64_t cs_kblocks; /* symmetric op driver block */
};
#ifdef _KERNEL
/*
* Return values for cryptodev_probesession methods.
*/
#define CRYPTODEV_PROBE_HARDWARE (-100)
#define CRYPTODEV_PROBE_ACCEL_SOFTWARE (-200)
#define CRYPTODEV_PROBE_SOFTWARE (-500)
#if 0
#define CRYPTDEB(s, ...) do { \
printf("%s:%d: " s "\n", __FILE__, __LINE__, ## __VA_ARGS__); \
} while (0)
#else
#define CRYPTDEB(...) do { } while (0)
#endif
struct crypto_session_params {
int csp_mode; /* Type of operations to perform. */
#define CSP_MODE_NONE 0
#define CSP_MODE_COMPRESS 1 /* Compression/decompression. */
#define CSP_MODE_CIPHER 2 /* Encrypt/decrypt. */
#define CSP_MODE_DIGEST 3 /* Compute/verify digest. */
#define CSP_MODE_AEAD 4 /* Combined auth/encryption. */
#define CSP_MODE_ETA 5 /* IPsec style encrypt-then-auth */
int csp_flags;
#define CSP_F_SEPARATE_OUTPUT 0x0001 /* Requests can use separate output */
#define CSP_F_SEPARATE_AAD 0x0002 /* Requests can use separate AAD */
int csp_ivlen; /* IV length in bytes. */
int csp_cipher_alg;
int csp_cipher_klen; /* Key length in bytes. */
const void *csp_cipher_key;
int csp_auth_alg;
int csp_auth_klen; /* Key length in bytes. */
const void *csp_auth_key;
int csp_auth_mlen; /* Number of digest bytes to use.
0 means all. */
};
enum crypto_buffer_type {
CRYPTO_BUF_NONE = 0,
CRYPTO_BUF_CONTIG,
CRYPTO_BUF_UIO,
CRYPTO_BUF_MBUF,
CRYPTO_BUF_VMPAGE,
CRYPTO_BUF_LAST = CRYPTO_BUF_VMPAGE
};
/*
* Description of a data buffer for a request. Requests can either
* have a single buffer that is modified in place or separate input
* and output buffers.
*/
struct crypto_buffer {
union {
struct {
char *cb_buf;
int cb_buf_len;
};
struct mbuf *cb_mbuf;
struct {
vm_page_t *cb_vm_page;
int cb_vm_page_len;
int cb_vm_page_offset;
};
struct uio *cb_uio;
};
enum crypto_buffer_type cb_type;
};
/*
* A cursor is used to iterate through a crypto request data buffer.
*/
struct crypto_buffer_cursor {
union {
char *cc_buf;
struct mbuf *cc_mbuf;
struct iovec *cc_iov;
vm_page_t *cc_vmpage;
};
/* Optional bytes of valid data remaining */
int cc_buf_len;
/*
* Optional offset within the current buffer segment where
* valid data begins
*/
size_t cc_offset;
enum crypto_buffer_type cc_type;
};
/* Structure describing complete operation */
struct cryptop {
TAILQ_ENTRY(cryptop) crp_next;
struct task crp_task;
crypto_session_t crp_session; /* Session */
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_session 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_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 */
#define CRYPTO_F_ASYNC 0x0080 /* Dispatch crypto jobs on several threads
* if op is synchronous
*/
#define CRYPTO_F_ASYNC_KEEPORDER 0x0100 /*
* Dispatch the crypto jobs in the same
* order there are submitted. Applied only
* if CRYPTO_F_ASYNC flags is set
*/
#define CRYPTO_F_IV_SEPARATE 0x0200 /* Use crp_iv[] as IV. */
int crp_op;
struct crypto_buffer crp_buf;
struct crypto_buffer crp_obuf;
void *crp_aad; /* AAD buffer. */
int crp_aad_start; /* Location of AAD. */
int crp_aad_length; /* 0 => no AAD. */
int crp_iv_start; /* Location of IV. IV length is from
* the session.
*/
int crp_payload_start; /* Location of ciphertext. */
int crp_payload_output_start;
int crp_payload_length;
int crp_digest_start; /* Location of MAC/tag. Length is
* from the session.
*/
uint8_t crp_iv[EALG_MAX_BLOCK_LEN]; /* IV if IV_SEPARATE. */
const void *crp_cipher_key; /* New cipher key if non-NULL. */
const void *crp_auth_key; /* New auth key if non-NULL. */
void *crp_opaque; /* Opaque pointer, passed along */
int (*crp_callback)(struct cryptop *); /* Callback function */
struct bintime crp_tstamp; /* performance time stamp */
uint32_t crp_seq; /* used for ordered dispatch */
uint32_t crp_retw_id; /*
* the return worker to be used,
* used for ordered dispatch
*/
};
static __inline void
_crypto_use_buf(struct crypto_buffer *cb, void *buf, int len)
{
cb->cb_buf = buf;
cb->cb_buf_len = len;
cb->cb_type = CRYPTO_BUF_CONTIG;
}
static __inline void
_crypto_use_mbuf(struct crypto_buffer *cb, struct mbuf *m)
{
cb->cb_mbuf = m;
cb->cb_type = CRYPTO_BUF_MBUF;
}
static __inline void
_crypto_use_vmpage(struct crypto_buffer *cb, vm_page_t *pages, int len,
int offset)
{
cb->cb_vm_page = pages;
cb->cb_vm_page_len = len;
cb->cb_vm_page_offset = offset;
cb->cb_type = CRYPTO_BUF_VMPAGE;
}
static __inline void
_crypto_use_uio(struct crypto_buffer *cb, struct uio *uio)
{
cb->cb_uio = uio;
cb->cb_type = CRYPTO_BUF_UIO;
}
static __inline void
crypto_use_buf(struct cryptop *crp, void *buf, int len)
{
_crypto_use_buf(&crp->crp_buf, buf, len);
}
static __inline void
crypto_use_mbuf(struct cryptop *crp, struct mbuf *m)
{
_crypto_use_mbuf(&crp->crp_buf, m);
}
static __inline void
crypto_use_vmpage(struct cryptop *crp, vm_page_t *pages, int len, int offset)
{
_crypto_use_vmpage(&crp->crp_buf, pages, len, offset);
}
static __inline void
crypto_use_uio(struct cryptop *crp, struct uio *uio)
{
_crypto_use_uio(&crp->crp_buf, uio);
}
static __inline void
crypto_use_output_buf(struct cryptop *crp, void *buf, int len)
{
_crypto_use_buf(&crp->crp_obuf, buf, len);
}
static __inline void
crypto_use_output_mbuf(struct cryptop *crp, struct mbuf *m)
{
_crypto_use_mbuf(&crp->crp_obuf, m);
}
static __inline void
crypto_use_output_vmpage(struct cryptop *crp, vm_page_t *pages, int len,
int offset)
{
_crypto_use_vmpage(&crp->crp_obuf, pages, len, offset);
}
static __inline void
crypto_use_output_uio(struct cryptop *crp, struct uio *uio)
{
_crypto_use_uio(&crp->crp_obuf, uio);
}
#define CRYPTOP_ASYNC(crp) \
(((crp)->crp_flags & CRYPTO_F_ASYNC) && \
crypto_ses2caps((crp)->crp_session) & CRYPTOCAP_F_SYNC)
#define CRYPTOP_ASYNC_KEEPORDER(crp) \
(CRYPTOP_ASYNC(crp) && \
(crp)->crp_flags & CRYPTO_F_ASYNC_KEEPORDER)
#define CRYPTO_HAS_OUTPUT_BUFFER(crp) \
((crp)->crp_obuf.cb_type != CRYPTO_BUF_NONE)
/* Flags in crp_op. */
#define CRYPTO_OP_DECRYPT 0x0
#define CRYPTO_OP_ENCRYPT 0x1
#define CRYPTO_OP_IS_ENCRYPT(op) ((op) & CRYPTO_OP_ENCRYPT)
#define CRYPTO_OP_COMPUTE_DIGEST 0x0
#define CRYPTO_OP_VERIFY_DIGEST 0x2
#define CRYPTO_OP_DECOMPRESS CRYPTO_OP_DECRYPT
#define CRYPTO_OP_COMPRESS CRYPTO_OP_ENCRYPT
#define CRYPTO_OP_IS_COMPRESS(op) ((op) & CRYPTO_OP_COMPRESS)
/*
* 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. */
uint32_t krp_hid; /* device used */
struct crparam krp_param[CRK_MAXPARAM]; /* kvm */
void (*krp_callback)(struct cryptkop *);
struct cryptocap *krp_cap;
};
uint32_t crypto_ses2hid(crypto_session_t crypto_session);
uint32_t crypto_ses2caps(crypto_session_t crypto_session);
void *crypto_get_driver_session(crypto_session_t crypto_session);
const struct crypto_session_params *crypto_get_params(
crypto_session_t crypto_session);
struct auth_hash *crypto_auth_hash(const struct crypto_session_params *csp);
struct enc_xform *crypto_cipher(const struct crypto_session_params *csp);
MALLOC_DECLARE(M_CRYPTO_DATA);
extern int crypto_newsession(crypto_session_t *cses,
const struct crypto_session_params *params, int hard);
extern void crypto_freesession(crypto_session_t cses);
#define CRYPTOCAP_F_HARDWARE CRYPTO_FLAG_HARDWARE
#define CRYPTOCAP_F_SOFTWARE CRYPTO_FLAG_SOFTWARE
#define CRYPTOCAP_F_SYNC 0x04000000 /* operates synchronously */
#define CRYPTOCAP_F_ACCEL_SOFTWARE 0x08000000
extern int32_t crypto_get_driverid(device_t dev, size_t session_size,
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_kregister(u_int32_t, int, u_int32_t);
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_destroyreq(struct cryptop *crp);
extern void crypto_initreq(struct cryptop *crp, crypto_session_t cses);
extern void crypto_freereq(struct cryptop *crp);
extern struct cryptop *crypto_getreq(crypto_session_t cses, int how);
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 */
#ifdef SYSCTL_DECL
SYSCTL_DECL(_kern_crypto);
#endif
/* Helper routines for drivers to initialize auth contexts for HMAC. */
struct auth_hash;
void hmac_init_ipad(struct auth_hash *axf, const char *key, int klen,
void *auth_ctx);
void hmac_init_opad(struct auth_hash *axf, const char *key, int klen,
void *auth_ctx);
/*
* Crypto-related utility routines used mainly by drivers.
*
* Similar to m_copyback/data, *_copyback copy data from the 'src'
* buffer into the crypto request's data buffer while *_copydata copy
* data from the crypto request's data buffer into the the 'dst'
* buffer.
*/
void crypto_copyback(struct cryptop *crp, int off, int size,
const void *src);
void crypto_copydata(struct cryptop *crp, int off, int size, void *dst);
int crypto_apply(struct cryptop *crp, int off, int len,
int (*f)(void *, const void *, u_int), void *arg);
void *crypto_contiguous_subsegment(struct cryptop *crp, size_t skip,
size_t len);
int crypto_apply_buf(struct crypto_buffer *cb, int off, int len,
int (*f)(void *, const void *, u_int), void *arg);
void *crypto_buffer_contiguous_subsegment(struct crypto_buffer *cb,
size_t skip, size_t len);
size_t crypto_buffer_len(struct crypto_buffer *cb);
void crypto_cursor_init(struct crypto_buffer_cursor *cc,
const struct crypto_buffer *cb);
void crypto_cursor_advance(struct crypto_buffer_cursor *cc, size_t amount);
void *crypto_cursor_segbase(struct crypto_buffer_cursor *cc);
size_t crypto_cursor_seglen(struct crypto_buffer_cursor *cc);
void crypto_cursor_copyback(struct crypto_buffer_cursor *cc, int size,
const void *vsrc);
void crypto_cursor_copydata(struct crypto_buffer_cursor *cc, int size,
void *vdst);
void crypto_cursor_copydata_noadv(struct crypto_buffer_cursor *cc, int size,
void *vdst);
static __inline void
crypto_read_iv(struct cryptop *crp, void *iv)
{
const struct crypto_session_params *csp;
csp = crypto_get_params(crp->crp_session);
if (crp->crp_flags & CRYPTO_F_IV_SEPARATE)
memcpy(iv, crp->crp_iv, csp->csp_ivlen);
else
crypto_copydata(crp, crp->crp_iv_start, csp->csp_ivlen, iv);
}
#endif /* _KERNEL */
#endif /* _CRYPTO_CRYPTO_H_ */
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