2 * if_alg: User-space algorithm interface
4 * Copyright (c) 2010 Herbert Xu <herbert@gondor.apana.org.au>
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the Free
8 * Software Foundation; either version 2 of the License, or (at your option)
13 #ifndef _CRYPTO_IF_ALG_H
14 #define _CRYPTO_IF_ALG_H
16 #include <linux/compiler.h>
17 #include <linux/completion.h>
18 #include <linux/if_alg.h>
19 #include <linux/scatterlist.h>
20 #include <linux/types.h>
23 #define ALG_MAX_PAGES 16
25 struct crypto_async_request
;
28 /* struct sock must be the first member of struct alg_sock */
33 const struct af_alg_type
*type
;
37 struct af_alg_completion
{
38 struct completion completion
;
42 struct af_alg_control
{
45 unsigned int aead_assoclen
;
49 void *(*bind
)(const char *name
, u32 type
, u32 mask
);
50 void (*release
)(void *private);
51 int (*setkey
)(void *private, const u8
*key
, unsigned int keylen
);
52 int (*accept
)(void *private, struct sock
*sk
);
53 int (*setauthsize
)(void *private, unsigned int authsize
);
55 struct proto_ops
*ops
;
61 struct scatterlist sg
[ALG_MAX_PAGES
];
62 struct page
*pages
[ALG_MAX_PAGES
];
65 int af_alg_register_type(const struct af_alg_type
*type
);
66 int af_alg_unregister_type(const struct af_alg_type
*type
);
68 int af_alg_release(struct socket
*sock
);
69 int af_alg_accept(struct sock
*sk
, struct socket
*newsock
);
71 int af_alg_make_sg(struct af_alg_sgl
*sgl
, struct iov_iter
*iter
, int len
);
72 void af_alg_free_sg(struct af_alg_sgl
*sgl
);
74 int af_alg_cmsg_send(struct msghdr
*msg
, struct af_alg_control
*con
);
76 int af_alg_wait_for_completion(int err
, struct af_alg_completion
*completion
);
77 void af_alg_complete(struct crypto_async_request
*req
, int err
);
79 static inline struct alg_sock
*alg_sk(struct sock
*sk
)
81 return (struct alg_sock
*)sk
;
84 static inline void af_alg_release_parent(struct sock
*sk
)
86 sock_put(alg_sk(sk
)->parent
);
89 static inline void af_alg_init_completion(struct af_alg_completion
*completion
)
91 init_completion(&completion
->completion
);
94 #endif /* _CRYPTO_IF_ALG_H */
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