nbd: Add max-connections to nbd-server-start
[qemu.git] / 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