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