/* * if_alg: User-space algorithm interface * * Copyright (c) 2010 Herbert Xu <herbert@gondor.apana.org.au> * * 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;} static inline void af_alg_init_completion(struct af_alg_completion *completion){	init_completion(&completion->completion);} #endif	/* _CRYPTO_IF_ALG_H */