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
|
/*
*------------------------------------------------------------------
* Copyright (c) 2019 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*------------------------------------------------------------------
*/
#include <vlib/vlib.h>
#include <vnet/plugin/plugin.h>
#include <vnet/crypto/crypto.h>
#include <crypto_ia32/crypto_ia32.h>
#include <crypto_ia32/aesni.h>
crypto_ia32_main_t crypto_ia32_main;
static void
crypto_ia32_key_handler (vlib_main_t * vm, vnet_crypto_key_op_t kop,
vnet_crypto_key_index_t idx)
{
vnet_crypto_key_t *key = vnet_crypto_get_key (idx);
crypto_ia32_main_t *cm = &crypto_ia32_main;
aesni_key_data_t *kd;
switch (key->alg)
{
case VNET_CRYPTO_ALG_AES_128_CBC:
case VNET_CRYPTO_ALG_AES_192_CBC:
case VNET_CRYPTO_ALG_AES_256_CBC:
break;
default:
return;
}
if (kop == VNET_CRYPTO_KEY_OP_DEL)
{
if (idx >= vec_len (cm->key_data))
return;
if (cm->key_data[idx] == 0)
return;
clib_memset_u8 (cm->key_data[idx], 0,
clib_mem_size (cm->key_data[idx]));
clib_mem_free (cm->key_data[idx]);
cm->key_data[idx] = 0;
return;
}
vec_validate_aligned (cm->key_data, idx, CLIB_CACHE_LINE_BYTES);
if (kop == VNET_CRYPTO_KEY_OP_MODIFY && cm->key_data[idx])
{
clib_memset_u8 (cm->key_data[idx], 0,
clib_mem_size (cm->key_data[idx]));
clib_mem_free (cm->key_data[idx]);
}
kd = cm->key_data[idx] = clib_mem_alloc_aligned (sizeof (aesni_key_data_t),
CLIB_CACHE_LINE_BYTES);
/* ADD or MODIFY */
switch (key->alg)
{
case VNET_CRYPTO_ALG_AES_128_CBC:
aes_key_expand (kd->encrypt_key, key->data, AESNI_KEY_128);
aes_key_expand (kd->decrypt_key, key->data, AESNI_KEY_128);
aes_key_enc_to_dec (kd->decrypt_key, AESNI_KEY_128);
break;
case VNET_CRYPTO_ALG_AES_192_CBC:
aes_key_expand (kd->encrypt_key, key->data, AESNI_KEY_192);
aes_key_expand (kd->decrypt_key, key->data, AESNI_KEY_192);
aes_key_enc_to_dec (kd->decrypt_key, AESNI_KEY_192);
break;
case VNET_CRYPTO_ALG_AES_256_CBC:
aes_key_expand (kd->encrypt_key, key->data, AESNI_KEY_256);
aes_key_expand (kd->decrypt_key, key->data, AESNI_KEY_256);
aes_key_enc_to_dec (kd->decrypt_key, AESNI_KEY_256);
break;
default:
break;
}
return;
}
clib_error_t *
crypto_ia32_init (vlib_main_t * vm)
{
crypto_ia32_main_t *cm = &crypto_ia32_main;
vlib_thread_main_t *tm = vlib_get_thread_main ();
clib_error_t *error;
if ((error = vlib_call_init_function (vm, vnet_crypto_init)))
return error;
vec_validate_aligned (cm->per_thread_data, tm->n_vlib_mains - 1,
CLIB_CACHE_LINE_BYTES);
cm->crypto_engine_index =
vnet_crypto_register_engine (vm, "ia32", 100,
"Intel IA32 ISA Optimized Crypto");
if (clib_cpu_supports_x86_aes () &&
(error = crypto_ia32_aesni_cbc_init (vm)))
goto error;
vnet_crypto_register_key_handler (vm, cm->crypto_engine_index,
crypto_ia32_key_handler);
error:
if (error)
vec_free (cm->per_thread_data);
return error;
}
VLIB_INIT_FUNCTION (crypto_ia32_init);
#include <vpp/app/version.h>
/* *INDENT-OFF* */
VLIB_PLUGIN_REGISTER () = {
.version = VPP_BUILD_VER,
.description = "Intel AESNI Software Crypto Backend Plugin",
};
/* *INDENT-ON* */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
|
