1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  * Asynchronous Compression operations
4  *
5  * Copyright (c) 2016, Intel Corporation
6  * Authors: Weigang Li <weigang.li@intel.com>
7  *          Giovanni Cabiddu <giovanni.cabiddu@intel.com>
8  */
9 #ifndef _CRYPTO_ACOMP_INT_H
10 #define _CRYPTO_ACOMP_INT_H
11 #include <crypto/acompress.h>
12 
13 /*
14  * Transform internal helpers.
15  */
16 static inline void *acomp_request_ctx(struct acomp_req *req)
17 {
18 	return req->__ctx;
19 }
20 
21 static inline void *acomp_tfm_ctx(struct crypto_acomp *tfm)
22 {
23 	return tfm->base.__crt_ctx;
24 }
25 
26 static inline void acomp_request_complete(struct acomp_req *req,
27 					  int err)
28 {
29 	req->base.complete(&req->base, err);
30 }
31 
32 static inline const char *acomp_alg_name(struct crypto_acomp *tfm)
33 {
34 	return crypto_acomp_tfm(tfm)->__crt_alg->cra_name;
35 }
36 
37 static inline struct acomp_req *__acomp_request_alloc(struct crypto_acomp *tfm)
38 {
39 	struct acomp_req *req;
40 
41 	req = kzalloc(sizeof(*req) + crypto_acomp_reqsize(tfm), GFP_KERNEL);
42 	if (likely(req))
43 		acomp_request_set_tfm(req, tfm);
44 	return req;
45 }
46 
47 static inline void __acomp_request_free(struct acomp_req *req)
48 {
49 	kfree_sensitive(req);
50 }
51 
52 /**
53  * crypto_register_acomp() -- Register asynchronous compression algorithm
54  *
55  * Function registers an implementation of an asynchronous
56  * compression algorithm
57  *
58  * @alg:	algorithm definition
59  *
60  * Return:	zero on success; error code in case of error
61  */
62 int crypto_register_acomp(struct acomp_alg *alg);
63 
64 /**
65  * crypto_unregister_acomp() -- Unregister asynchronous compression algorithm
66  *
67  * Function unregisters an implementation of an asynchronous
68  * compression algorithm
69  *
70  * @alg:	algorithm definition
71  */
72 void crypto_unregister_acomp(struct acomp_alg *alg);
73 
74 int crypto_register_acomps(struct acomp_alg *algs, int count);
75 void crypto_unregister_acomps(struct acomp_alg *algs, int count);
76 
77 #endif
78