/*      $NetBSD: ocryptodev.h,v 1.4 2019/01/27 02:08:48 pgoyette Exp $ */
/*      $FreeBSD: src/sys/opencrypto/cryptodev.h,v 1.2.2.6 2003/07/02 17:04:50 sam Exp $        */
/*      $OpenBSD: cryptodev.h,v 1.33 2002/07/17 23:52:39 art Exp $      */

/*-
* Copyright (c) 2008 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Coyote Point Systems, Inc.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 FOUNDATION OR CONTRIBUTORS
* 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.
*/

/*
* The author of this code is Angelos D. Keromytis ([email protected])
*
* 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_OCRYPTODEV_H_
#define _CRYPTO_OCRYPTODEV_H_

#include <sys/ioccom.h>

struct osession_op {    /* backwards compatible */
       u_int32_t       cipher;         /* ie. CRYPTO_DES_CBC */
       u_int32_t       mac;            /* ie. CRYPTO_MD5_HMAC */
       u_int32_t       keylen;         /* cipher key */
       void *          key;
       int             mackeylen;      /* mac key */
       void *          mackey;

       u_int32_t       ses;            /* returns: session # */
};

struct osession_n_op {
       u_int32_t       cipher;         /* ie. CRYPTO_DES_CBC */
       u_int32_t       mac;            /* ie. CRYPTO_MD5_HMAC */

       u_int32_t       keylen;         /* cipher key */
       void *          key;
       int             mackeylen;      /* mac key */
       void *          mackey;

       u_int32_t       ses;            /* returns: session # */
       int             status;
};

struct ocrypt_op {
       u_int32_t       ses;
       u_int16_t       op;             /* i.e. COP_ENCRYPT */
       u_int16_t       flags;
       u_int           len;
       void *          src, *dst;      /* become iov[] inside kernel */
       void *          mac;            /* must be big enough for chosen MAC */
       void *          iv;
};

/* to support multiple session creation */
/*
*
* The reqid field is filled when the operation has
* been accepted and started, and can be used to later retrieve
* the operation results via CIOCNCRYPTRET or identify the
* request in the completion list returned by CIOCNCRYPTRETM.
*
* The opaque pointer can be set arbitrarily by the user
* and it is passed back in the crypt_result structure
* when the request completes.  This field can be used for example
* to track context for the request and avoid lookups in the
* user application.
*/

struct ocrypt_n_op {
       u_int32_t       ses;
       u_int16_t       op;             /* i.e. COP_ENCRYPT */
       u_int16_t       flags;
       u_int           len;            /* src & dst len */

       u_int32_t       reqid;          /* request id */
       int             status;         /* status of request -accepted or not */
       void            *opaque;        /* opaque pointer returned to user */
       u_int32_t       keylen;         /* cipher key - optional */
       void *          key;
       u_int32_t       mackeylen;      /* also optional */
       void *          mackey;

       void *          src, *dst;      /* become iov[] inside kernel */
       void *          mac;            /* must be big enough for chosen MAC */
       void *          iv;
};

struct ocrypt_sgop {
       size_t          count;
       struct osession_n_op * sessions;
};

struct ocrypt_mop {
       size_t          count;          /* how many */
       struct ocrypt_n_op *    reqs;   /* where to get them */
};

#define OCIOCGSESSION   _IOWR('c', 101, struct osession_op)
#define OCIOCNGSESSION  _IOWR('c', 106, struct ocrypt_sgop)
#define OCIOCCRYPT      _IOWR('c', 103, struct ocrypt_op)
#define OCIOCNCRYPTM    _IOWR('c', 107, struct ocrypt_mop)

struct fcrypt;
struct session_op;
struct csession;
struct crypt_op;
struct crypt_n_op;

int ocryptof_ioctl(struct file *, u_long, void *);

#endif /* _CRYPTO_OCRYPTODEV_H_ */

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