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
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
|
/*
* This file is part of the Chelsio T6 Crypto driver for Linux.
*
* Copyright (c) 2003-2016 Chelsio Communications, Inc. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#ifndef __CHCR_CRYPTO_H__
#define __CHCR_CRYPTO_H__
#define GHASH_BLOCK_SIZE 16
#define GHASH_DIGEST_SIZE 16
#define CCM_B0_SIZE 16
#define CCM_AAD_FIELD_SIZE 2
#define T6_MAX_AAD_SIZE 511
/* Define following if h/w is not dropping the AAD and IV data before
* giving the processed data
*/
#define CHCR_CRA_PRIORITY 500
#define CHCR_AEAD_PRIORITY 6000
#define CHCR_AES_MAX_KEY_LEN (2 * (AES_MAX_KEY_SIZE)) /* consider xts */
#define CHCR_MAX_CRYPTO_IV_LEN 16 /* AES IV len */
#define CHCR_MAX_AUTHENC_AES_KEY_LEN 32 /* max aes key length*/
#define CHCR_MAX_AUTHENC_SHA_KEY_LEN 128 /* max sha key length*/
#define CHCR_GIVENCRYPT_OP 2
/* CPL/SCMD parameters */
#define CHCR_ENCRYPT_OP 0
#define CHCR_DECRYPT_OP 1
#define CHCR_SCMD_SEQ_NO_CTRL_32BIT 1
#define CHCR_SCMD_SEQ_NO_CTRL_48BIT 2
#define CHCR_SCMD_SEQ_NO_CTRL_64BIT 3
#define CHCR_SCMD_PROTO_VERSION_GENERIC 4
#define CHCR_SCMD_AUTH_CTRL_AUTH_CIPHER 0
#define CHCR_SCMD_AUTH_CTRL_CIPHER_AUTH 1
#define CHCR_SCMD_CIPHER_MODE_NOP 0
#define CHCR_SCMD_CIPHER_MODE_AES_CBC 1
#define CHCR_SCMD_CIPHER_MODE_AES_GCM 2
#define CHCR_SCMD_CIPHER_MODE_AES_CTR 3
#define CHCR_SCMD_CIPHER_MODE_GENERIC_AES 4
#define CHCR_SCMD_CIPHER_MODE_AES_XTS 6
#define CHCR_SCMD_CIPHER_MODE_AES_CCM 7
#define CHCR_SCMD_AUTH_MODE_NOP 0
#define CHCR_SCMD_AUTH_MODE_SHA1 1
#define CHCR_SCMD_AUTH_MODE_SHA224 2
#define CHCR_SCMD_AUTH_MODE_SHA256 3
#define CHCR_SCMD_AUTH_MODE_GHASH 4
#define CHCR_SCMD_AUTH_MODE_SHA512_224 5
#define CHCR_SCMD_AUTH_MODE_SHA512_256 6
#define CHCR_SCMD_AUTH_MODE_SHA512_384 7
#define CHCR_SCMD_AUTH_MODE_SHA512_512 8
#define CHCR_SCMD_AUTH_MODE_CBCMAC 9
#define CHCR_SCMD_AUTH_MODE_CMAC 10
#define CHCR_SCMD_HMAC_CTRL_NOP 0
#define CHCR_SCMD_HMAC_CTRL_NO_TRUNC 1
#define CHCR_SCMD_HMAC_CTRL_TRUNC_RFC4366 2
#define CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT 3
#define CHCR_SCMD_HMAC_CTRL_PL1 4
#define CHCR_SCMD_HMAC_CTRL_PL2 5
#define CHCR_SCMD_HMAC_CTRL_PL3 6
#define CHCR_SCMD_HMAC_CTRL_DIV2 7
#define VERIFY_HW 0
#define VERIFY_SW 1
#define CHCR_SCMD_IVGEN_CTRL_HW 0
#define CHCR_SCMD_IVGEN_CTRL_SW 1
/* This are not really mac key size. They are intermediate values
* of sha engine and its size
*/
#define CHCR_KEYCTX_MAC_KEY_SIZE_128 0
#define CHCR_KEYCTX_MAC_KEY_SIZE_160 1
#define CHCR_KEYCTX_MAC_KEY_SIZE_192 2
#define CHCR_KEYCTX_MAC_KEY_SIZE_256 3
#define CHCR_KEYCTX_MAC_KEY_SIZE_512 4
#define CHCR_KEYCTX_CIPHER_KEY_SIZE_128 0
#define CHCR_KEYCTX_CIPHER_KEY_SIZE_192 1
#define CHCR_KEYCTX_CIPHER_KEY_SIZE_256 2
#define CHCR_KEYCTX_NO_KEY 15
#define CHCR_CPL_FW4_PLD_IV_OFFSET (5 * 64) /* bytes. flt #5 and #6 */
#define CHCR_CPL_FW4_PLD_HASH_RESULT_OFFSET (7 * 64) /* bytes. flt #7 */
#define CHCR_CPL_FW4_PLD_DATA_SIZE (4 * 64) /* bytes. flt #4 to #7 */
#define KEY_CONTEXT_HDR_SALT_AND_PAD 16
#define flits_to_bytes(x) (x * 8)
#define IV_NOP 0
#define IV_IMMEDIATE 1
#define IV_DSGL 2
#define AEAD_H_SIZE 16
#define CRYPTO_ALG_SUB_TYPE_MASK 0x0f000000
#define CRYPTO_ALG_SUB_TYPE_HASH_HMAC 0x01000000
#define CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106 0x02000000
#define CRYPTO_ALG_SUB_TYPE_AEAD_GCM 0x03000000
#define CRYPTO_ALG_SUB_TYPE_AEAD_AUTHENC 0x04000000
#define CRYPTO_ALG_SUB_TYPE_AEAD_CCM 0x05000000
#define CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309 0x06000000
#define CRYPTO_ALG_SUB_TYPE_AEAD_NULL 0x07000000
#define CRYPTO_ALG_SUB_TYPE_CTR 0x08000000
#define CRYPTO_ALG_SUB_TYPE_CTR_RFC3686 0x09000000
#define CRYPTO_ALG_SUB_TYPE_XTS 0x0a000000
#define CRYPTO_ALG_SUB_TYPE_CBC 0x0b000000
#define CRYPTO_ALG_TYPE_HMAC (CRYPTO_ALG_TYPE_AHASH |\
CRYPTO_ALG_SUB_TYPE_HASH_HMAC)
#define MAX_SCRATCH_PAD_SIZE 32
#define CHCR_HASH_MAX_BLOCK_SIZE_64 64
#define CHCR_HASH_MAX_BLOCK_SIZE_128 128
#define CHCR_SG_SIZE 2048
/* Aligned to 128 bit boundary */
struct ablk_ctx {
struct crypto_skcipher *sw_cipher;
struct crypto_cipher *aes_generic;
__be32 key_ctx_hdr;
unsigned int enckey_len;
unsigned char ciph_mode;
u8 key[CHCR_AES_MAX_KEY_LEN];
u8 nonce[4];
u8 rrkey[AES_MAX_KEY_SIZE];
};
struct chcr_aead_reqctx {
struct sk_buff *skb;
struct scatterlist *dst;
struct scatterlist *newdstsg;
struct scatterlist srcffwd[2];
struct scatterlist dstffwd[2];
short int dst_nents;
u16 verify;
u8 iv[CHCR_MAX_CRYPTO_IV_LEN];
unsigned char scratch_pad[MAX_SCRATCH_PAD_SIZE];
};
struct chcr_gcm_ctx {
u8 ghash_h[AEAD_H_SIZE];
};
struct chcr_authenc_ctx {
u8 dec_rrkey[AES_MAX_KEY_SIZE];
u8 h_iopad[2 * CHCR_HASH_MAX_DIGEST_SIZE];
unsigned char auth_mode;
};
struct __aead_ctx {
struct chcr_gcm_ctx gcm[0];
struct chcr_authenc_ctx authenc[0];
};
struct chcr_aead_ctx {
__be32 key_ctx_hdr;
unsigned int enckey_len;
struct crypto_skcipher *null;
struct crypto_aead *sw_cipher;
u8 salt[MAX_SALT];
u8 key[CHCR_AES_MAX_KEY_LEN];
u16 hmac_ctrl;
u16 mayverify;
struct __aead_ctx ctx[0];
};
struct hmac_ctx {
struct crypto_shash *base_hash;
u8 ipad[CHCR_HASH_MAX_BLOCK_SIZE_128];
u8 opad[CHCR_HASH_MAX_BLOCK_SIZE_128];
};
struct __crypto_ctx {
struct hmac_ctx hmacctx[0];
struct ablk_ctx ablkctx[0];
struct chcr_aead_ctx aeadctx[0];
};
struct chcr_context {
struct chcr_dev *dev;
unsigned char tx_qidx;
unsigned char rx_qidx;
struct __crypto_ctx crypto_ctx[0];
};
struct chcr_ahash_req_ctx {
u32 result;
u8 bfr1[CHCR_HASH_MAX_BLOCK_SIZE_128];
u8 bfr2[CHCR_HASH_MAX_BLOCK_SIZE_128];
u8 *reqbfr;
u8 *skbfr;
u8 reqlen;
/* DMA the partial hash in it */
u8 partial_hash[CHCR_HASH_MAX_DIGEST_SIZE];
u64 data_len; /* Data len till time */
/* SKB which is being sent to the hardware for processing */
struct sk_buff *skb;
};
struct chcr_blkcipher_req_ctx {
struct sk_buff *skb;
struct scatterlist srcffwd[2];
struct scatterlist dstffwd[2];
struct scatterlist *dstsg;
struct scatterlist *dst;
struct scatterlist *newdstsg;
unsigned int processed;
unsigned int op;
short int dst_nents;
u8 iv[CHCR_MAX_CRYPTO_IV_LEN];
};
struct chcr_alg_template {
u32 type;
u32 is_registered;
union {
struct crypto_alg crypto;
struct ahash_alg hash;
struct aead_alg aead;
} alg;
};
struct chcr_req_ctx {
union {
struct ahash_request *ahash_req;
struct aead_request *aead_req;
struct ablkcipher_request *ablk_req;
} req;
union {
struct chcr_ahash_req_ctx *ahash_ctx;
struct chcr_aead_reqctx *reqctx;
struct chcr_blkcipher_req_ctx *ablk_ctx;
} ctx;
};
struct sge_opaque_hdr {
void *dev;
dma_addr_t addr[MAX_SKB_FRAGS + 1];
};
typedef struct sk_buff *(*create_wr_t)(struct aead_request *req,
unsigned short qid,
int size,
unsigned short op_type);
static int chcr_aead_op(struct aead_request *req_base,
unsigned short op_type,
int size,
create_wr_t create_wr_fn);
static inline int get_aead_subtype(struct crypto_aead *aead);
static int is_newsg(struct scatterlist *sgl, unsigned int *newents);
static struct scatterlist *alloc_new_sg(struct scatterlist *sgl,
unsigned int nents);
static inline void free_new_sg(struct scatterlist *sgl);
static int chcr_handle_cipher_resp(struct ablkcipher_request *req,
unsigned char *input, int err);
#endif /* __CHCR_CRYPTO_H__ */
|
