cregit-Linux how code gets into the kernel

Release 4.12 include/crypto/if_alg.h

Directory: include/crypto
 * if_alg: User-space algorithm interface
 * Copyright (c) 2010 Herbert Xu <>
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 2 of the License, or (at your option)
 * any later version.

#ifndef _CRYPTO_IF_ALG_H

#define _CRYPTO_IF_ALG_H

#include <linux/compiler.h>
#include <linux/completion.h>
#include <linux/if_alg.h>
#include <linux/scatterlist.h>
#include <linux/types.h>
#include <net/sock.h>

#define ALG_MAX_PAGES			16

struct crypto_async_request;

struct alg_sock {
	/* struct sock must be the first member of struct alg_sock */
struct sock sk;

struct sock *parent;

unsigned int refcnt;
unsigned int nokey_refcnt;

const struct af_alg_type *type;
void *private;

struct af_alg_completion {
struct completion completion;
int err;

struct af_alg_control {
struct af_alg_iv *iv;
int op;
unsigned int aead_assoclen;

struct af_alg_type {
void *(*bind)(const char *name, u32 type, u32 mask);
void (*release)(void *private);
int (*setkey)(void *private, const u8 *key, unsigned int keylen);
int (*accept)(void *private, struct sock *sk);
int (*accept_nokey)(void *private, struct sock *sk);
int (*setauthsize)(void *private, unsigned int authsize);

struct proto_ops *ops;
struct proto_ops *ops_nokey;
struct module *owner;
char name[14];

struct af_alg_sgl {
struct scatterlist sg[ALG_MAX_PAGES + 1];
struct page *pages[ALG_MAX_PAGES];
unsigned int npages;

int af_alg_register_type(const struct af_alg_type *type);
int af_alg_unregister_type(const struct af_alg_type *type);

int af_alg_release(struct socket *sock);
void af_alg_release_parent(struct sock *sk);
int af_alg_accept(struct sock *sk, struct socket *newsock, bool kern);

int af_alg_make_sg(struct af_alg_sgl *sgl, struct iov_iter *iter, int len);
void af_alg_free_sg(struct af_alg_sgl *sgl);
void af_alg_link_sg(struct af_alg_sgl *sgl_prev, struct af_alg_sgl *sgl_new);

int af_alg_cmsg_send(struct msghdr *msg, struct af_alg_control *con);

int af_alg_wait_for_completion(int err, struct af_alg_completion *completion);
void af_alg_complete(struct crypto_async_request *req, int err);

static inline struct alg_sock *alg_sk(struct sock *sk) { return (struct alg_sock *)sk; }


Herbert Xu22100.00%1100.00%

static inline void af_alg_init_completion(struct af_alg_completion *completion) { init_completion(&completion->completion); }


Herbert Xu20100.00%1100.00%

#endif /* _CRYPTO_IF_ALG_H */

Overall Contributors

Herbert Xu37388.60%440.00%
Tadeusz Struk204.75%110.00%
Stephan Mueller194.51%220.00%
Alexey Dobriyan30.71%110.00%
Al Viro30.71%110.00%
David Howells30.71%110.00%
Directory: include/crypto
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