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1/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */2/*3 * if_alg: User-space algorithm interface4 *5 * Copyright (c) 2010 Herbert Xu <herbert@gondor.apana.org.au>6 *7 * This program is free software; you can redistribute it and/or modify it8 * under the terms of the GNU General Public License as published by the Free9 * Software Foundation; either version 2 of the License, or (at your option)10 * any later version.11 *12 */13 14#ifndef _LINUX_IF_ALG_H15#define _LINUX_IF_ALG_H16 17#include <linux/types.h>18 19struct sockaddr_alg {20 __u16 salg_family;21 __u8 salg_type[14];22 __u32 salg_feat;23 __u32 salg_mask;24 __u8 salg_name[64];25};26 27/*28 * Linux v4.12 and later removed the 64-byte limit on salg_name[]; it's now an29 * arbitrary-length field. We had to keep the original struct above for source30 * compatibility with existing userspace programs, though. Use the new struct31 * below if support for very long algorithm names is needed. To do this,32 * allocate 'sizeof(struct sockaddr_alg_new) + strlen(algname) + 1' bytes, and33 * copy algname (including the null terminator) into salg_name.34 */35struct sockaddr_alg_new {36 __u16 salg_family;37 __u8 salg_type[14];38 __u32 salg_feat;39 __u32 salg_mask;40 __u8 salg_name[];41};42 43struct af_alg_iv {44 __u32 ivlen;45 __u8 iv[];46};47 48/* Socket options */49#define ALG_SET_KEY 150#define ALG_SET_IV 251#define ALG_SET_OP 352#define ALG_SET_AEAD_ASSOCLEN 453#define ALG_SET_AEAD_AUTHSIZE 554#define ALG_SET_DRBG_ENTROPY 655#define ALG_SET_KEY_BY_KEY_SERIAL 756 57/* Operations */58#define ALG_OP_DECRYPT 059#define ALG_OP_ENCRYPT 160 61#endif /* _LINUX_IF_ALG_H */62