crypto/afalgpriv.h

   1 /*
   2  * QEMU Crypto af_alg support
   3  *
   4  * Copyright (c) 2017 HUAWEI TECHNOLOGIES CO., LTD.
   5  *
   6  * Authors:
   7  *    Longpeng(Mike) <longpeng2@huawei.com>
   8  *
   9  * This work is licensed under the terms of the GNU GPL, version 2 or
  10  * (at your option) any later version.  See the COPYING file in the
  11  * top-level directory.
  12  */
  13
  14 #ifndef QCRYPTO_AFALGPRIV_H
  15 #define QCRYPTO_AFALGPRIV_H
  16
  17 #include <linux/if_alg.h>
  18 #include "crypto/cipher.h"
  19
  20 #define SALG_TYPE_LEN_MAX 14
  21 #define SALG_NAME_LEN_MAX 64
  22
  23 #ifndef SOL_ALG
  24 #define SOL_ALG 279
  25 #endif
  26
  27 #define AFALG_TYPE_CIPHER "skcipher"
  28 #define AFALG_TYPE_HASH "hash"
  29
  30 #define ALG_OPTYPE_LEN 4
  31 #define ALG_MSGIV_LEN(len) (sizeof(struct af_alg_iv) + (len))
  32
  33 typedef struct QCryptoAFAlg QCryptoAFAlg;
  34
  35 struct QCryptoAFAlg {
  36     QCryptoCipher base;
  37
  38     int tfmfd;
  39     int opfd;
  40     struct msghdr *msg;
  41     struct cmsghdr *cmsg;
  42 };
  43
  44 /**
  45  * qcrypto_afalg_comm_alloc:
  46  * @type: the type of crypto operation
  47  * @name: the name of crypto operation
  48  *
  49  * Allocate a QCryptoAFAlg object and bind itself to
  50  * a AF_ALG socket.
  51  *
  52  * Returns:
  53  *  a new QCryptoAFAlg object, or NULL in error.
  54  */
  55 QCryptoAFAlg *
  56 qcrypto_afalg_comm_alloc(const char *type, const char *name,
  57                          Error **errp);
  58
  59 /**
  60  * afalg_comm_free:
  61  * @afalg: the QCryptoAFAlg object
  62  *
  63  * Free the @afalg.
  64  */
  65 void qcrypto_afalg_comm_free(QCryptoAFAlg *afalg);
  66
  67 #endif