/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR Linux-OpenIB) */

/*

 * Copyright (c) 2016-2017, Mellanox Technologies. All rights reserved.

 *

 * This software is available to you under a choice of one of two

 * licenses.  You may choose to be licensed under the terms of the GNU

 * General Public License (GPL) Version 2, available from the file

 * COPYING in the main directory of this source tree, or the

 * OpenIB.org BSD license below:

 *

 *     Redistribution and use in source and binary forms, with or

 *     without modification, are permitted provided that the following

 *     conditions are met:

 *

 *      - Redistributions of source code must retain the above

 *        copyright notice, this list of conditions and the following

 *        disclaimer.

 *

 *      - 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.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS

 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN

 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

 * SOFTWARE.

 */

#ifndef _LINUX_TLS_H

#define _LINUX_TLS_H

#include <linux/types.h>

/* TLS socket options */

#define TLS_TX			1	/* Set transmit parameters */

#define TLS_RX			2	/* Set receive parameters */

/* Supported versions */

#define TLS_VERSION_MINOR(ver)	((ver) & 0xFF)

#define TLS_VERSION_MAJOR(ver)	(((ver) >> 8) & 0xFF)

#define TLS_VERSION_NUMBER(id)	((((id##_VERSION_MAJOR) & 0xFF) << 8) |	\

				 ((id##_VERSION_MINOR) & 0xFF))

#define TLS_1_2_VERSION_MAJOR	0x3

#define TLS_1_2_VERSION_MINOR	0x3

#define TLS_1_2_VERSION		TLS_VERSION_NUMBER(TLS_1_2)

#define TLS_1_3_VERSION_MAJOR	0x3

#define TLS_1_3_VERSION_MINOR	0x4

#define TLS_1_3_VERSION		TLS_VERSION_NUMBER(TLS_1_3)

/* Supported ciphers */

#define TLS_CIPHER_AES_GCM_128				51

#define TLS_CIPHER_AES_GCM_128_IV_SIZE			8

#define TLS_CIPHER_AES_GCM_128_KEY_SIZE		16

#define TLS_CIPHER_AES_GCM_128_SALT_SIZE		4

#define TLS_CIPHER_AES_GCM_128_TAG_SIZE		16

#define TLS_CIPHER_AES_GCM_128_REC_SEQ_SIZE		8

#define TLS_CIPHER_AES_GCM_256				52

#define TLS_CIPHER_AES_GCM_256_IV_SIZE			8

#define TLS_CIPHER_AES_GCM_256_KEY_SIZE		32

#define TLS_CIPHER_AES_GCM_256_SALT_SIZE		4

#define TLS_CIPHER_AES_GCM_256_TAG_SIZE		16

#define TLS_CIPHER_AES_GCM_256_REC_SEQ_SIZE		8

#define TLS_CIPHER_AES_CCM_128				53

#define TLS_CIPHER_AES_CCM_128_IV_SIZE			8

#define TLS_CIPHER_AES_CCM_128_KEY_SIZE		16

#define TLS_CIPHER_AES_CCM_128_SALT_SIZE		4

#define TLS_CIPHER_AES_CCM_128_TAG_SIZE		16

#define TLS_CIPHER_AES_CCM_128_REC_SEQ_SIZE		8

#define TLS_SET_RECORD_TYPE	1

#define TLS_GET_RECORD_TYPE	2

struct tls_crypto_info {

	__u16 version;

	__u16 cipher_type;

};

struct tls12_crypto_info_aes_gcm_128 {

	struct tls_crypto_info info;

	unsigned char iv[TLS_CIPHER_AES_GCM_128_IV_SIZE];

	unsigned char key[TLS_CIPHER_AES_GCM_128_KEY_SIZE];

	unsigned char salt[TLS_CIPHER_AES_GCM_128_SALT_SIZE];

	unsigned char rec_seq[TLS_CIPHER_AES_GCM_128_REC_SEQ_SIZE];

};

struct tls12_crypto_info_aes_gcm_256 {

	struct tls_crypto_info info;

	unsigned char iv[TLS_CIPHER_AES_GCM_256_IV_SIZE];

	unsigned char key[TLS_CIPHER_AES_GCM_256_KEY_SIZE];

	unsigned char salt[TLS_CIPHER_AES_GCM_256_SALT_SIZE];

	unsigned char rec_seq[TLS_CIPHER_AES_GCM_256_REC_SEQ_SIZE];

};

struct tls12_crypto_info_aes_ccm_128 {

	struct tls_crypto_info info;

	unsigned char iv[TLS_CIPHER_AES_CCM_128_IV_SIZE];

	unsigned char key[TLS_CIPHER_AES_CCM_128_KEY_SIZE];

	unsigned char salt[TLS_CIPHER_AES_CCM_128_SALT_SIZE];

	unsigned char rec_seq[TLS_CIPHER_AES_CCM_128_REC_SEQ_SIZE];

};

enum {

	TLS_INFO_UNSPEC,

	TLS_INFO_VERSION,

	TLS_INFO_CIPHER,

	TLS_INFO_TXCONF,

	TLS_INFO_RXCONF,

	__TLS_INFO_MAX,

};

#define TLS_INFO_MAX (__TLS_INFO_MAX - 1)

#define TLS_CONF_BASE 1

#define TLS_CONF_SW 2

#define TLS_CONF_HW 3

#define TLS_CONF_HW_RECORD 4

#endif /* _LINUX_TLS_H */