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
  19 #define SALG_TYPE_LEN_MAX 14
  20 #define SALG_NAME_LEN_MAX 64
  21
  22 #ifndef SOL_ALG
  23 #define SOL_ALG 279
  24 #endif
  25
  26 #define AFALG_TYPE_CIPHER "skcipher"
  27
  28 #define ALG_OPTYPE_LEN 4
  29 #define ALG_MSGIV_LEN(len) (sizeof(struct af_alg_iv) + (len))
  30
  31 typedef struct QCryptoAFAlg QCryptoAFAlg;
  32
  33 struct QCryptoAFAlg {
  34     int tfmfd;
  35     int opfd;
  36     struct msghdr *msg;
  37     struct cmsghdr *cmsg;
  38 };
  39
  40 /**
  41  * qcrypto_afalg_comm_alloc:
  42  * @type: the type of crypto operation
  43  * @name: the name of crypto operation
  44  *
  45  * Allocate a QCryptoAFAlg object and bind itself to
  46  * a AF_ALG socket.
  47  *
  48  * Returns:
  49  *  a new QCryptoAFAlg object, or NULL in error.
  50  */
  51 QCryptoAFAlg *
  52 qcrypto_afalg_comm_alloc(const char *type, const char *name,
  53                          Error **errp);
  54
  55 /**
  56  * afalg_comm_free:
  57  * @afalg: the QCryptoAFAlg object
  58  *
  59  * Free the @afalg.
  60  */
  61 void qcrypto_afalg_comm_free(QCryptoAFAlg *afalg);
  62
  63 #endif