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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
10#include <crypto/internal/acompress.h>
11#include <linux/cryptouser.h>
12#include <linux/errno.h>
13#include <linux/kernel.h>
14#include <linux/module.h>
15#include <linux/seq_file.h>
16#include <linux/slab.h>
17#include <linux/string.h>
18#include <net/netlink.h>
19
20#include "compress.h"
21
22struct crypto_scomp;
23
24static const struct crypto_type crypto_acomp_type;
25
26static inline struct acomp_alg *__crypto_acomp_alg(struct crypto_alg *alg)
27{
28 return container_of(alg, struct acomp_alg, calg.base);
29}
30
31static inline struct acomp_alg *crypto_acomp_alg(struct crypto_acomp *tfm)
32{
33 return __crypto_acomp_alg(crypto_acomp_tfm(tfm)->__crt_alg);
34}
35
36static int __maybe_unused crypto_acomp_report(
37 struct sk_buff *skb, struct crypto_alg *alg)
38{
39 struct crypto_report_acomp racomp;
40
41 memset(&racomp, 0, sizeof(racomp));
42
43 strscpy(racomp.type, "acomp", sizeof(racomp.type));
44
45 return nla_put(skb, CRYPTOCFGA_REPORT_ACOMP, sizeof(racomp), &racomp);
46}
47
48static void crypto_acomp_show(struct seq_file *m, struct crypto_alg *alg)
49 __maybe_unused;
50
51static void crypto_acomp_show(struct seq_file *m, struct crypto_alg *alg)
52{
53 seq_puts(m, "type : acomp\n");
54}
55
56static void crypto_acomp_exit_tfm(struct crypto_tfm *tfm)
57{
58 struct crypto_acomp *acomp = __crypto_acomp_tfm(tfm);
59 struct acomp_alg *alg = crypto_acomp_alg(acomp);
60
61 alg->exit(acomp);
62}
63
64static int crypto_acomp_init_tfm(struct crypto_tfm *tfm)
65{
66 struct crypto_acomp *acomp = __crypto_acomp_tfm(tfm);
67 struct acomp_alg *alg = crypto_acomp_alg(acomp);
68
69 if (tfm->__crt_alg->cra_type != &crypto_acomp_type)
70 return crypto_init_scomp_ops_async(tfm);
71
72 acomp->compress = alg->compress;
73 acomp->decompress = alg->decompress;
74 acomp->dst_free = alg->dst_free;
75 acomp->reqsize = alg->reqsize;
76
77 if (alg->exit)
78 acomp->base.exit = crypto_acomp_exit_tfm;
79
80 if (alg->init)
81 return alg->init(acomp);
82
83 return 0;
84}
85
86static unsigned int crypto_acomp_extsize(struct crypto_alg *alg)
87{
88 int extsize = crypto_alg_extsize(alg);
89
90 if (alg->cra_type != &crypto_acomp_type)
91 extsize += sizeof(struct crypto_scomp *);
92
93 return extsize;
94}
95
96static const struct crypto_type crypto_acomp_type = {
97 .extsize = crypto_acomp_extsize,
98 .init_tfm = crypto_acomp_init_tfm,
99#ifdef CONFIG_PROC_FS
100 .show = crypto_acomp_show,
101#endif
102#if IS_ENABLED(CONFIG_CRYPTO_USER)
103 .report = crypto_acomp_report,
104#endif
105 .maskclear = ~CRYPTO_ALG_TYPE_MASK,
106 .maskset = CRYPTO_ALG_TYPE_ACOMPRESS_MASK,
107 .type = CRYPTO_ALG_TYPE_ACOMPRESS,
108 .tfmsize = offsetof(struct crypto_acomp, base),
109};
110
111struct crypto_acomp *crypto_alloc_acomp(const char *alg_name, u32 type,
112 u32 mask)
113{
114 return crypto_alloc_tfm(alg_name, &crypto_acomp_type, type, mask);
115}
116EXPORT_SYMBOL_GPL(crypto_alloc_acomp);
117
118struct crypto_acomp *crypto_alloc_acomp_node(const char *alg_name, u32 type,
119 u32 mask, int node)
120{
121 return crypto_alloc_tfm_node(alg_name, &crypto_acomp_type, type, mask,
122 node);
123}
124EXPORT_SYMBOL_GPL(crypto_alloc_acomp_node);
125
126struct acomp_req *acomp_request_alloc(struct crypto_acomp *acomp)
127{
128 struct crypto_tfm *tfm = crypto_acomp_tfm(acomp);
129 struct acomp_req *req;
130
131 req = __acomp_request_alloc(acomp);
132 if (req && (tfm->__crt_alg->cra_type != &crypto_acomp_type))
133 return crypto_acomp_scomp_alloc_ctx(req);
134
135 return req;
136}
137EXPORT_SYMBOL_GPL(acomp_request_alloc);
138
139void acomp_request_free(struct acomp_req *req)
140{
141 struct crypto_acomp *acomp = crypto_acomp_reqtfm(req);
142 struct crypto_tfm *tfm = crypto_acomp_tfm(acomp);
143
144 if (tfm->__crt_alg->cra_type != &crypto_acomp_type)
145 crypto_acomp_scomp_free_ctx(req);
146
147 if (req->flags & CRYPTO_ACOMP_ALLOC_OUTPUT) {
148 acomp->dst_free(req->dst);
149 req->dst = NULL;
150 }
151
152 __acomp_request_free(req);
153}
154EXPORT_SYMBOL_GPL(acomp_request_free);
155
156void comp_prepare_alg(struct comp_alg_common *alg)
157{
158 struct crypto_alg *base = &alg->base;
159
160 base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
161}
162
163int crypto_register_acomp(struct acomp_alg *alg)
164{
165 struct crypto_alg *base = &alg->calg.base;
166
167 comp_prepare_alg(&alg->calg);
168
169 base->cra_type = &crypto_acomp_type;
170 base->cra_flags |= CRYPTO_ALG_TYPE_ACOMPRESS;
171
172 return crypto_register_alg(base);
173}
174EXPORT_SYMBOL_GPL(crypto_register_acomp);
175
176void crypto_unregister_acomp(struct acomp_alg *alg)
177{
178 crypto_unregister_alg(&alg->base);
179}
180EXPORT_SYMBOL_GPL(crypto_unregister_acomp);
181
182int crypto_register_acomps(struct acomp_alg *algs, int count)
183{
184 int i, ret;
185
186 for (i = 0; i < count; i++) {
187 ret = crypto_register_acomp(&algs[i]);
188 if (ret)
189 goto err;
190 }
191
192 return 0;
193
194err:
195 for (--i; i >= 0; --i)
196 crypto_unregister_acomp(&algs[i]);
197
198 return ret;
199}
200EXPORT_SYMBOL_GPL(crypto_register_acomps);
201
202void crypto_unregister_acomps(struct acomp_alg *algs, int count)
203{
204 int i;
205
206 for (i = count - 1; i >= 0; --i)
207 crypto_unregister_acomp(&algs[i]);
208}
209EXPORT_SYMBOL_GPL(crypto_unregister_acomps);
210
211MODULE_LICENSE("GPL");
212MODULE_DESCRIPTION("Asynchronous compression type");
1/*
2 * Asynchronous Compression operations
3 *
4 * Copyright (c) 2016, Intel Corporation
5 * Authors: Weigang Li <weigang.li@intel.com>
6 * Giovanni Cabiddu <giovanni.cabiddu@intel.com>
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the Free
10 * Software Foundation; either version 2 of the License, or (at your option)
11 * any later version.
12 *
13 */
14#include <linux/errno.h>
15#include <linux/kernel.h>
16#include <linux/module.h>
17#include <linux/seq_file.h>
18#include <linux/slab.h>
19#include <linux/string.h>
20#include <linux/crypto.h>
21#include <crypto/algapi.h>
22#include <linux/cryptouser.h>
23#include <linux/compiler.h>
24#include <net/netlink.h>
25#include <crypto/internal/acompress.h>
26#include <crypto/internal/scompress.h>
27#include "internal.h"
28
29static const struct crypto_type crypto_acomp_type;
30
31#ifdef CONFIG_NET
32static int crypto_acomp_report(struct sk_buff *skb, struct crypto_alg *alg)
33{
34 struct crypto_report_acomp racomp;
35
36 strncpy(racomp.type, "acomp", sizeof(racomp.type));
37
38 if (nla_put(skb, CRYPTOCFGA_REPORT_ACOMP,
39 sizeof(struct crypto_report_acomp), &racomp))
40 goto nla_put_failure;
41 return 0;
42
43nla_put_failure:
44 return -EMSGSIZE;
45}
46#else
47static int crypto_acomp_report(struct sk_buff *skb, struct crypto_alg *alg)
48{
49 return -ENOSYS;
50}
51#endif
52
53static void crypto_acomp_show(struct seq_file *m, struct crypto_alg *alg)
54 __maybe_unused;
55
56static void crypto_acomp_show(struct seq_file *m, struct crypto_alg *alg)
57{
58 seq_puts(m, "type : acomp\n");
59}
60
61static void crypto_acomp_exit_tfm(struct crypto_tfm *tfm)
62{
63 struct crypto_acomp *acomp = __crypto_acomp_tfm(tfm);
64 struct acomp_alg *alg = crypto_acomp_alg(acomp);
65
66 alg->exit(acomp);
67}
68
69static int crypto_acomp_init_tfm(struct crypto_tfm *tfm)
70{
71 struct crypto_acomp *acomp = __crypto_acomp_tfm(tfm);
72 struct acomp_alg *alg = crypto_acomp_alg(acomp);
73
74 if (tfm->__crt_alg->cra_type != &crypto_acomp_type)
75 return crypto_init_scomp_ops_async(tfm);
76
77 acomp->compress = alg->compress;
78 acomp->decompress = alg->decompress;
79 acomp->dst_free = alg->dst_free;
80 acomp->reqsize = alg->reqsize;
81
82 if (alg->exit)
83 acomp->base.exit = crypto_acomp_exit_tfm;
84
85 if (alg->init)
86 return alg->init(acomp);
87
88 return 0;
89}
90
91static unsigned int crypto_acomp_extsize(struct crypto_alg *alg)
92{
93 int extsize = crypto_alg_extsize(alg);
94
95 if (alg->cra_type != &crypto_acomp_type)
96 extsize += sizeof(struct crypto_scomp *);
97
98 return extsize;
99}
100
101static const struct crypto_type crypto_acomp_type = {
102 .extsize = crypto_acomp_extsize,
103 .init_tfm = crypto_acomp_init_tfm,
104#ifdef CONFIG_PROC_FS
105 .show = crypto_acomp_show,
106#endif
107 .report = crypto_acomp_report,
108 .maskclear = ~CRYPTO_ALG_TYPE_MASK,
109 .maskset = CRYPTO_ALG_TYPE_ACOMPRESS_MASK,
110 .type = CRYPTO_ALG_TYPE_ACOMPRESS,
111 .tfmsize = offsetof(struct crypto_acomp, base),
112};
113
114struct crypto_acomp *crypto_alloc_acomp(const char *alg_name, u32 type,
115 u32 mask)
116{
117 return crypto_alloc_tfm(alg_name, &crypto_acomp_type, type, mask);
118}
119EXPORT_SYMBOL_GPL(crypto_alloc_acomp);
120
121struct acomp_req *acomp_request_alloc(struct crypto_acomp *acomp)
122{
123 struct crypto_tfm *tfm = crypto_acomp_tfm(acomp);
124 struct acomp_req *req;
125
126 req = __acomp_request_alloc(acomp);
127 if (req && (tfm->__crt_alg->cra_type != &crypto_acomp_type))
128 return crypto_acomp_scomp_alloc_ctx(req);
129
130 return req;
131}
132EXPORT_SYMBOL_GPL(acomp_request_alloc);
133
134void acomp_request_free(struct acomp_req *req)
135{
136 struct crypto_acomp *acomp = crypto_acomp_reqtfm(req);
137 struct crypto_tfm *tfm = crypto_acomp_tfm(acomp);
138
139 if (tfm->__crt_alg->cra_type != &crypto_acomp_type)
140 crypto_acomp_scomp_free_ctx(req);
141
142 if (req->flags & CRYPTO_ACOMP_ALLOC_OUTPUT) {
143 acomp->dst_free(req->dst);
144 req->dst = NULL;
145 }
146
147 __acomp_request_free(req);
148}
149EXPORT_SYMBOL_GPL(acomp_request_free);
150
151int crypto_register_acomp(struct acomp_alg *alg)
152{
153 struct crypto_alg *base = &alg->base;
154
155 base->cra_type = &crypto_acomp_type;
156 base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
157 base->cra_flags |= CRYPTO_ALG_TYPE_ACOMPRESS;
158
159 return crypto_register_alg(base);
160}
161EXPORT_SYMBOL_GPL(crypto_register_acomp);
162
163int crypto_unregister_acomp(struct acomp_alg *alg)
164{
165 return crypto_unregister_alg(&alg->base);
166}
167EXPORT_SYMBOL_GPL(crypto_unregister_acomp);
168
169int crypto_register_acomps(struct acomp_alg *algs, int count)
170{
171 int i, ret;
172
173 for (i = 0; i < count; i++) {
174 ret = crypto_register_acomp(&algs[i]);
175 if (ret)
176 goto err;
177 }
178
179 return 0;
180
181err:
182 for (--i; i >= 0; --i)
183 crypto_unregister_acomp(&algs[i]);
184
185 return ret;
186}
187EXPORT_SYMBOL_GPL(crypto_register_acomps);
188
189void crypto_unregister_acomps(struct acomp_alg *algs, int count)
190{
191 int i;
192
193 for (i = count - 1; i >= 0; --i)
194 crypto_unregister_acomp(&algs[i]);
195}
196EXPORT_SYMBOL_GPL(crypto_unregister_acomps);
197
198MODULE_LICENSE("GPL");
199MODULE_DESCRIPTION("Asynchronous compression type");