include/uapi/linux/tls.h

   1 /* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR Linux-OpenIB) */
   2 /*
   3  * Copyright (c) 2016-2017, Mellanox Technologies. All rights reserved.
   4  *
   5  * This software is available to you under a choice of one of two
   6  * licenses.  You may choose to be licensed under the terms of the GNU
   7  * General Public License (GPL) Version 2, available from the file
   8  * COPYING in the main directory of this source tree, or the
   9  * OpenIB.org BSD license below:
  10  *
  11  *     Redistribution and use in source and binary forms, with or
  12  *     without modification, are permitted provided that the following
  13  *     conditions are met:
  14  *
  15  *      - Redistributions of source code must retain the above
  16  *        copyright notice, this list of conditions and the following
  17  *        disclaimer.
  18  *
  19  *      - Redistributions in binary form must reproduce the above
  20  *        copyright notice, this list of conditions and the following
  21  *        disclaimer in the documentation and/or other materials
  22  *        provided with the distribution.
  23  *
  24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  28  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  29  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  30  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  31  * SOFTWARE.
  32  */
  33
  34 #ifndef _UAPI_LINUX_TLS_H
  35 #define _UAPI_LINUX_TLS_H
  36
  37 #include <linux/types.h>
  38
  39 /* TLS socket options */
  40 #define TLS_TX                  1       /* Set transmit parameters */
  41 #define TLS_RX                  2       /* Set receive parameters */
  42
  43 /* Supported versions */
  44 #define TLS_VERSION_MINOR(ver)  ((ver) & 0xFF)
  45 #define TLS_VERSION_MAJOR(ver)  (((ver) >> 8) & 0xFF)
  46
  47 #define TLS_VERSION_NUMBER(id)  ((((id##_VERSION_MAJOR) & 0xFF) << 8) | \
  48                                  ((id##_VERSION_MINOR) & 0xFF))
  49
  50 #define TLS_1_2_VERSION_MAJOR   0x3
  51 #define TLS_1_2_VERSION_MINOR   0x3
  52 #define TLS_1_2_VERSION         TLS_VERSION_NUMBER(TLS_1_2)
  53
  54 /* Supported ciphers */
  55 #define TLS_CIPHER_AES_GCM_128                          51
  56 #define TLS_CIPHER_AES_GCM_128_IV_SIZE                  8
  57 #define TLS_CIPHER_AES_GCM_128_KEY_SIZE         16
  58 #define TLS_CIPHER_AES_GCM_128_SALT_SIZE                4
  59 #define TLS_CIPHER_AES_GCM_128_TAG_SIZE         16
  60 #define TLS_CIPHER_AES_GCM_128_REC_SEQ_SIZE             8
  61
  62 #define TLS_SET_RECORD_TYPE     1
  63 #define TLS_GET_RECORD_TYPE     2
  64
  65 struct tls_crypto_info {
  66         __u16 version;
  67         __u16 cipher_type;
  68 };
  69
  70 struct tls12_crypto_info_aes_gcm_128 {
  71         struct tls_crypto_info info;
  72         unsigned char iv[TLS_CIPHER_AES_GCM_128_IV_SIZE];
  73         unsigned char key[TLS_CIPHER_AES_GCM_128_KEY_SIZE];
  74         unsigned char salt[TLS_CIPHER_AES_GCM_128_SALT_SIZE];
  75         unsigned char rec_seq[TLS_CIPHER_AES_GCM_128_REC_SEQ_SIZE];
  76 };
  77
  78 #endif /* _UAPI_LINUX_TLS_H */