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
|
/* $OpenBSD: hifn7751var.h,v 1.32 2001/08/11 06:40:35 jason Exp $ */
/*
* Invertex AEON / Hifn 7751 driver
* Copyright (c) 1999 Invertex Inc. All rights reserved.
* Copyright (c) 1999 Theo de Raadt
* Copyright (c) 2000-2001 Network Security Technologies, Inc.
* http://www.netsec.net
*
* Please send any comments, feedback, bug-fixes, or feature requests to
* software@invertex.com.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef __HIFN7751VAR_H__
#define __HIFN7751VAR_H__
#ifdef _KERNEL
/*
* Some configurable values for the driver
*/
#define HIFN_D_CMD_RSIZE 24 /* command descriptors */
#define HIFN_D_SRC_RSIZE 80 /* source descriptors */
#define HIFN_D_DST_RSIZE 80 /* destination descriptors */
#define HIFN_D_RES_RSIZE 24 /* result descriptors */
/*
* Length values for cryptography
*/
#define HIFN_DES_KEY_LENGTH 8
#define HIFN_3DES_KEY_LENGTH 24
#define HIFN_MAX_CRYPT_KEY_LENGTH HIFN_3DES_KEY_LENGTH
#define HIFN_IV_LENGTH 8
/*
* Length values for authentication
*/
#define HIFN_MAC_KEY_LENGTH 64
#define HIFN_MD5_LENGTH 16
#define HIFN_SHA1_LENGTH 20
#define HIFN_MAC_TRUNC_LENGTH 12
#define MAX_SCATTER 64
/*
* Data structure to hold all 4 rings and any other ring related data.
*/
struct hifn_dma {
/*
* Descriptor rings. We add +1 to the size to accomidate the
* jump descriptor.
*/
struct hifn_desc cmdr[HIFN_D_CMD_RSIZE+1];
struct hifn_desc srcr[HIFN_D_SRC_RSIZE+1];
struct hifn_desc dstr[HIFN_D_DST_RSIZE+1];
struct hifn_desc resr[HIFN_D_RES_RSIZE+1];
struct hifn_command *hifn_commands[HIFN_D_RES_RSIZE];
u_char command_bufs[HIFN_D_CMD_RSIZE][HIFN_MAX_COMMAND];
u_char result_bufs[HIFN_D_CMD_RSIZE][HIFN_MAX_RESULT];
u_int64_t test_src, test_dst;
/*
* Our current positions for insertion and removal from the desriptor
* rings.
*/
int cmdi, srci, dsti, resi;
volatile int cmdu, srcu, dstu, resu;
int cmdk, srck, dstk, resk;
};
struct hifn_session {
int hs_flags;
u_int8_t hs_iv[HIFN_IV_LENGTH];
};
/*
* Holds data specific to a single HIFN board.
*/
struct hifn_softc {
struct device sc_dv; /* generic device */
void * sc_ih; /* interrupt handler cookie */
u_int32_t sc_dmaier;
u_int32_t sc_drammodel; /* 1=dram, 0=sram */
bus_space_handle_t sc_sh0, sc_sh1;
bus_space_tag_t sc_st0, sc_st1;
bus_dma_tag_t sc_dmat;
struct hifn_dma *sc_dma;
bus_dmamap_t sc_dmamap;
int32_t sc_cid;
int sc_maxses;
int sc_ramsize;
int sc_flags;
#define HIFN_HAS_RNG 1
#define HIFN_HAS_PUBLIC 2
struct timeout sc_rngto, sc_tickto;
int sc_rngfirst;
int sc_rnghz;
int sc_c_busy, sc_s_busy, sc_d_busy, sc_r_busy, sc_active;
struct hifn_session sc_sessions[2048];
};
#define WRITE_REG_0(sc,reg,val) \
bus_space_write_4((sc)->sc_st0, (sc)->sc_sh0, reg, val)
#define READ_REG_0(sc,reg) \
bus_space_read_4((sc)->sc_st0, (sc)->sc_sh0, reg)
/*
* hifn_command_t
*
* This is the control structure used to pass commands to hifn_encrypt().
*
* flags
* -----
* Flags is the bitwise "or" values for command configuration. A single
* encrypt direction needs to be set:
*
* HIFN_ENCODE or HIFN_DECODE
*
* To use cryptography, a single crypto algorithm must be included:
*
* HIFN_CRYPT_3DES or HIFN_CRYPT_DES
*
* To use authentication is used, a single MAC algorithm must be included:
*
* HIFN_MAC_MD5 or HIFN_MAC_SHA1
*
* By default MD5 uses a 16 byte hash and SHA-1 uses a 20 byte hash.
* If the value below is set, hash values are truncated or assumed
* truncated to 12 bytes:
*
* HIFN_MAC_TRUNC
*
* Keys for encryption and authentication can be sent as part of a command,
* or the last key value used with a particular session can be retrieved
* and used again if either of these flags are not specified.
*
* HIFN_CRYPT_NEW_KEY, HIFN_MAC_NEW_KEY
*
* session_num
* -----------
* A number between 0 and 2048 (for DRAM models) or a number between
* 0 and 768 (for SRAM models). Those who don't want to use session
* numbers should leave value at zero and send a new crypt key and/or
* new MAC key on every command. If you use session numbers and
* don't send a key with a command, the last key sent for that same
* session number will be used.
*
* Warning: Using session numbers and multiboard at the same time
* is currently broken.
*
* mbuf
* ----
* Either fill in the mbuf pointer and npa=0 or
* fill packp[] and packl[] and set npa to > 0
*
* mac_header_skip
* ---------------
* The number of bytes of the source_buf that are skipped over before
* authentication begins. This must be a number between 0 and 2^16-1
* and can be used by IPsec implementers to skip over IP headers.
* *** Value ignored if authentication not used ***
*
* crypt_header_skip
* -----------------
* The number of bytes of the source_buf that are skipped over before
* the cryptographic operation begins. This must be a number between 0
* and 2^16-1. For IPsec, this number will always be 8 bytes larger
* than the auth_header_skip (to skip over the ESP header).
* *** Value ignored if cryptography not used ***
*
*/
struct hifn_command {
u_int16_t session_num;
u_int16_t base_masks, cry_masks, mac_masks;
u_int8_t iv[HIFN_IV_LENGTH], *ck, mac[HIFN_MAC_KEY_LENGTH];
int cklen;
union {
struct mbuf *src_m;
struct uio *src_io;
} srcu;
bus_dmamap_t src_map;
union {
struct mbuf *dst_m;
struct uio *dst_io;
} dstu;
bus_dmamap_t dst_map;
struct hifn_softc *softc;
struct cryptop *crp;
struct cryptodesc *enccrd, *maccrd;
};
/*
* Return values for hifn_crypto()
*/
#define HIFN_CRYPTO_SUCCESS 0
#define HIFN_CRYPTO_BAD_INPUT (-1)
#define HIFN_CRYPTO_RINGS_FULL (-2)
/**************************************************************************
*
* Function: hifn_crypto
*
* Purpose: Called by external drivers to begin an encryption on the
* HIFN board.
*
* Blocking/Non-blocking Issues
* ============================
* The driver cannot block in hifn_crypto (no calls to tsleep) currently.
* hifn_crypto() returns HIFN_CRYPTO_RINGS_FULL if there is not enough
* room in any of the rings for the request to proceed.
*
* Return Values
* =============
* 0 for success, negative values on error
*
* Defines for negative error codes are:
*
* HIFN_CRYPTO_BAD_INPUT : The passed in command had invalid settings.
* HIFN_CRYPTO_RINGS_FULL : All DMA rings were full and non-blocking
* behaviour was requested.
*
*************************************************************************/
/*
* Convert back and forth from 'sid' to 'card' and 'session'
*/
#define HIFN_CARD(sid) (((sid) & 0xf0000000) >> 28)
#define HIFN_SESSION(sid) ((sid) & 0x000007ff)
#define HIFN_SID(crd,ses) (((crd) << 28) | ((ses) & 0x7ff))
#endif /* _KERNEL */
struct hifn_stats {
u_int64_t hst_ibytes;
u_int64_t hst_obytes;
u_int32_t hst_ipackets;
u_int32_t hst_opackets;
u_int32_t hst_invalid;
u_int32_t hst_nomem;
u_int32_t hst_abort;
};
#endif /* __HIFN7751VAR_H__ */
|
