1 /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
3 * if_alg: User-space algorithm interface
5 * Copyright (c) 2010 Herbert Xu <herbert@gondor.apana.org.au>
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the Free
9 * Software Foundation; either version 2 of the License, or (at your option)
14 #ifndef _LINUX_IF_ALG_H
15 #define _LINUX_IF_ALG_H
17 #include <linux/types.h>
28 * Linux v4.12 and later removed the 64-byte limit on salg_name[]; it's now an
29 * arbitrary-length field. We had to keep the original struct above for source
30 * compatibility with existing userspace programs, though. Use the new struct
31 * below if support for very long algorithm names is needed. To do this,
32 * allocate 'sizeof(struct sockaddr_alg_new) + strlen(algname) + 1' bytes, and
33 * copy algname (including the null terminator) into salg_name.
35 struct sockaddr_alg_new {
52 #define ALG_SET_AEAD_ASSOCLEN 4
53 #define ALG_SET_AEAD_AUTHSIZE 5
54 #define ALG_SET_DRBG_ENTROPY 6
55 #define ALG_SET_KEY_BY_KEY_SERIAL 7
58 #define ALG_OP_DECRYPT 0
59 #define ALG_OP_ENCRYPT 1
61 #endif /* _LINUX_IF_ALG_H */