1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
|
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Asynchronous Compression operations
*
* Copyright (c) 2016, Intel Corporation
* Authors: Weigang Li <weigang.li@intel.com>
* Giovanni Cabiddu <giovanni.cabiddu@intel.com>
*/
#include <crypto/internal/acompress.h>
#include <linux/cryptouser.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/seq_file.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <net/netlink.h>
#include "compress.h"
struct crypto_scomp;
static const struct crypto_type crypto_acomp_type;
static inline struct acomp_alg *__crypto_acomp_alg(struct crypto_alg *alg)
{
return container_of(alg, struct acomp_alg, calg.base);
}
static inline struct acomp_alg *crypto_acomp_alg(struct crypto_acomp *tfm)
{
return __crypto_acomp_alg(crypto_acomp_tfm(tfm)->__crt_alg);
}
static int __maybe_unused crypto_acomp_report(
struct sk_buff *skb, struct crypto_alg *alg)
{
struct crypto_report_acomp racomp;
memset(&racomp, 0, sizeof(racomp));
strscpy(racomp.type, "acomp", sizeof(racomp.type));
return nla_put(skb, CRYPTOCFGA_REPORT_ACOMP, sizeof(racomp), &racomp);
}
static void crypto_acomp_show(struct seq_file *m, struct crypto_alg *alg)
__maybe_unused;
static void crypto_acomp_show(struct seq_file *m, struct crypto_alg *alg)
{
seq_puts(m, "type : acomp\n");
}
static void crypto_acomp_exit_tfm(struct crypto_tfm *tfm)
{
struct crypto_acomp *acomp = __crypto_acomp_tfm(tfm);
struct acomp_alg *alg = crypto_acomp_alg(acomp);
alg->exit(acomp);
}
static int crypto_acomp_init_tfm(struct crypto_tfm *tfm)
{
struct crypto_acomp *acomp = __crypto_acomp_tfm(tfm);
struct acomp_alg *alg = crypto_acomp_alg(acomp);
if (tfm->__crt_alg->cra_type != &crypto_acomp_type)
return crypto_init_scomp_ops_async(tfm);
acomp->compress = alg->compress;
acomp->decompress = alg->decompress;
acomp->dst_free = alg->dst_free;
acomp->reqsize = alg->reqsize;
if (alg->exit)
acomp->base.exit = crypto_acomp_exit_tfm;
if (alg->init)
return alg->init(acomp);
return 0;
}
static unsigned int crypto_acomp_extsize(struct crypto_alg *alg)
{
int extsize = crypto_alg_extsize(alg);
if (alg->cra_type != &crypto_acomp_type)
extsize += sizeof(struct crypto_scomp *);
return extsize;
}
static inline int __crypto_acomp_report_stat(struct sk_buff *skb,
struct crypto_alg *alg)
{
struct comp_alg_common *calg = __crypto_comp_alg_common(alg);
struct crypto_istat_compress *istat = comp_get_stat(calg);
struct crypto_stat_compress racomp;
memset(&racomp, 0, sizeof(racomp));
strscpy(racomp.type, "acomp", sizeof(racomp.type));
racomp.stat_compress_cnt = atomic64_read(&istat->compress_cnt);
racomp.stat_compress_tlen = atomic64_read(&istat->compress_tlen);
racomp.stat_decompress_cnt = atomic64_read(&istat->decompress_cnt);
racomp.stat_decompress_tlen = atomic64_read(&istat->decompress_tlen);
racomp.stat_err_cnt = atomic64_read(&istat->err_cnt);
return nla_put(skb, CRYPTOCFGA_STAT_ACOMP, sizeof(racomp), &racomp);
}
#ifdef CONFIG_CRYPTO_STATS
int crypto_acomp_report_stat(struct sk_buff *skb, struct crypto_alg *alg)
{
return __crypto_acomp_report_stat(skb, alg);
}
#endif
static const struct crypto_type crypto_acomp_type = {
.extsize = crypto_acomp_extsize,
.init_tfm = crypto_acomp_init_tfm,
#ifdef CONFIG_PROC_FS
.show = crypto_acomp_show,
#endif
#ifdef CONFIG_CRYPTO_USER
.report = crypto_acomp_report,
#endif
#ifdef CONFIG_CRYPTO_STATS
.report_stat = crypto_acomp_report_stat,
#endif
.maskclear = ~CRYPTO_ALG_TYPE_MASK,
.maskset = CRYPTO_ALG_TYPE_ACOMPRESS_MASK,
.type = CRYPTO_ALG_TYPE_ACOMPRESS,
.tfmsize = offsetof(struct crypto_acomp, base),
};
struct crypto_acomp *crypto_alloc_acomp(const char *alg_name, u32 type,
u32 mask)
{
return crypto_alloc_tfm(alg_name, &crypto_acomp_type, type, mask);
}
EXPORT_SYMBOL_GPL(crypto_alloc_acomp);
struct crypto_acomp *crypto_alloc_acomp_node(const char *alg_name, u32 type,
u32 mask, int node)
{
return crypto_alloc_tfm_node(alg_name, &crypto_acomp_type, type, mask,
node);
}
EXPORT_SYMBOL_GPL(crypto_alloc_acomp_node);
struct acomp_req *acomp_request_alloc(struct crypto_acomp *acomp)
{
struct crypto_tfm *tfm = crypto_acomp_tfm(acomp);
struct acomp_req *req;
req = __acomp_request_alloc(acomp);
if (req && (tfm->__crt_alg->cra_type != &crypto_acomp_type))
return crypto_acomp_scomp_alloc_ctx(req);
return req;
}
EXPORT_SYMBOL_GPL(acomp_request_alloc);
void acomp_request_free(struct acomp_req *req)
{
struct crypto_acomp *acomp = crypto_acomp_reqtfm(req);
struct crypto_tfm *tfm = crypto_acomp_tfm(acomp);
if (tfm->__crt_alg->cra_type != &crypto_acomp_type)
crypto_acomp_scomp_free_ctx(req);
if (req->flags & CRYPTO_ACOMP_ALLOC_OUTPUT) {
acomp->dst_free(req->dst);
req->dst = NULL;
}
__acomp_request_free(req);
}
EXPORT_SYMBOL_GPL(acomp_request_free);
void comp_prepare_alg(struct comp_alg_common *alg)
{
struct crypto_istat_compress *istat = comp_get_stat(alg);
struct crypto_alg *base = &alg->base;
base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
if (IS_ENABLED(CONFIG_CRYPTO_STATS))
memset(istat, 0, sizeof(*istat));
}
int crypto_register_acomp(struct acomp_alg *alg)
{
struct crypto_alg *base = &alg->calg.base;
comp_prepare_alg(&alg->calg);
base->cra_type = &crypto_acomp_type;
base->cra_flags |= CRYPTO_ALG_TYPE_ACOMPRESS;
return crypto_register_alg(base);
}
EXPORT_SYMBOL_GPL(crypto_register_acomp);
void crypto_unregister_acomp(struct acomp_alg *alg)
{
crypto_unregister_alg(&alg->base);
}
EXPORT_SYMBOL_GPL(crypto_unregister_acomp);
int crypto_register_acomps(struct acomp_alg *algs, int count)
{
int i, ret;
for (i = 0; i < count; i++) {
ret = crypto_register_acomp(&algs[i]);
if (ret)
goto err;
}
return 0;
err:
for (--i; i >= 0; --i)
crypto_unregister_acomp(&algs[i]);
return ret;
}
EXPORT_SYMBOL_GPL(crypto_register_acomps);
void crypto_unregister_acomps(struct acomp_alg *algs, int count)
{
int i;
for (i = count - 1; i >= 0; --i)
crypto_unregister_acomp(&algs[i]);
}
EXPORT_SYMBOL_GPL(crypto_unregister_acomps);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Asynchronous compression type");
|
