/* 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 _UAPI_LINUX_TLS_H
#define _UAPI_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)

/* 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_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];
};

#endif /* _UAPI_LINUX_TLS_H */