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 */
34 unsigned int nokey_refcnt
;
36 const struct af_alg_type
*type
;
40 struct af_alg_completion
{
41 struct completion completion
;
45 struct af_alg_control
{
48 unsigned int aead_assoclen
;
52 void *(*bind
)(const char *name
, u32 type
, u32 mask
);
53 void (*release
)(void *private);
54 int (*setkey
)(void *private, const u8
*key
, unsigned int keylen
);
55 int (*accept
)(void *private, struct sock
*sk
);
56 int (*accept_nokey
)(void *private, struct sock
*sk
);
57 int (*setauthsize
)(void *private, unsigned int authsize
);
59 struct proto_ops
*ops
;
60 struct proto_ops
*ops_nokey
;
66 struct scatterlist sg
[ALG_MAX_PAGES
+ 1];
67 struct page
*pages
[ALG_MAX_PAGES
];
71 int af_alg_register_type(const struct af_alg_type
*type
);
72 int af_alg_unregister_type(const struct af_alg_type
*type
);
74 int af_alg_release(struct socket
*sock
);
75 void af_alg_release_parent(struct sock
*sk
);
76 int af_alg_accept(struct sock
*sk
, struct socket
*newsock
);
78 int af_alg_make_sg(struct af_alg_sgl
*sgl
, struct iov_iter
*iter
, int len
);
79 void af_alg_free_sg(struct af_alg_sgl
*sgl
);
80 void af_alg_link_sg(struct af_alg_sgl
*sgl_prev
, struct af_alg_sgl
*sgl_new
);
82 int af_alg_cmsg_send(struct msghdr
*msg
, struct af_alg_control
*con
);
84 int af_alg_wait_for_completion(int err
, struct af_alg_completion
*completion
);
85 void af_alg_complete(struct crypto_async_request
*req
, int err
);
87 static inline struct alg_sock
*alg_sk(struct sock
*sk
)
89 return (struct alg_sock
*)sk
;
92 static inline void af_alg_init_completion(struct af_alg_completion
*completion
)
94 init_completion(&completion
->completion
);
97 #endif /* _CRYPTO_IF_ALG_H */
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