{{ message }}
Repository navigation
Expand file tree
/
Copy pathcam.c
More file actions
479 lines (383 loc) · 13.1 KB
/
Copy pathcam.c
File metadata and controls
479 lines (383 loc) · 13.1 KB
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
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
/******************************************************************************
*
* Copyright(c) 2009-2010 Realtek Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
*
* The full GNU General Public License is included in this distribution in the
* file called LICENSE.
*
* Contact Information:
* wlanfae <wlanfae@realtek.com>
* Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
* Hsinchu 300, Taiwan.
*
* Larry Finger <Larry.Finger@lwfinger.net>
*
*****************************************************************************/
#include "wifi.h"
#include "cam.h"
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 2, 0))
#include <linux/export.h>
#endif
s8 rtl_cam_set_key(struct ieee80211_hw *hw, struct ieee80211_sta *sta,
struct ieee80211_key_conf *key,
enum rtl_cam_key_type cam_key_type)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
u8 entry_id = 0;
u8 enc_algo = 0;
u8 key_index = 0;
u8 macaddr[ETH_ALEN];
u8 key_data[128] = {0};
enum rt_enc_alg enc_alg_in_driver = NO_ENCRYPTION;
static u8 cam_const_addr[4][6] = {
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x01},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x02},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x03}
};
static u8 cam_const_broad[] = {
0xff, 0xff, 0xff, 0xff, 0xff, 0xff
};
key_index = key->keyidx;
memcpy(key_data, key->key, key->keylen);/* avoid (key->len) < 128*/
switch (key->cipher) {
case WLAN_CIPHER_SUITE_WEP40:
enc_algo = rtlpriv->cfg->maps[SEC_CAM_WEP40];
enc_alg_in_driver = WEP40_ENCRYPTION;
break;
case WLAN_CIPHER_SUITE_WEP104:
enc_algo = rtlpriv->cfg->maps[SEC_CAM_WEP104];
enc_alg_in_driver = WEP104_ENCRYPTION;
break;
case WLAN_CIPHER_SUITE_TKIP:
enc_algo = rtlpriv->cfg->maps[SEC_CAM_TKIP];
enc_alg_in_driver = TKIP_ENCRYPTION;
break;
case WLAN_CIPHER_SUITE_CCMP:
enc_algo = rtlpriv->cfg->maps[SEC_CAM_AES];
enc_alg_in_driver = AESCCMP_ENCRYPTION;
break;
case WLAN_CIPHER_SUITE_AES_CMAC:
/* dead code here, already returned not support in rtl_op_set_key*/
RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
"not support,use software CMAC encrypiton\n");
return -1;
/* no need to break */
default:
RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
"switch case not process\n");
enc_algo = rtlpriv->cfg->maps[SEC_CAM_AES];
break;
}
/* wep + wep_group */
if (cam_key_type == wep_only) {
RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, "set WEP(group/pairwise) key\n");
rtlpriv->sec.pairwise_enc_algorithm = enc_alg_in_driver;
rtlpriv->sec.group_enc_algorithm = enc_alg_in_driver;
memcpy(macaddr, cam_const_addr[key_index], ETH_ALEN);
/* group */
} else if (cam_key_type == group_key) {
RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, "set group key\n");
rtlpriv->sec.group_enc_algorithm = enc_alg_in_driver;
memcpy(macaddr, cam_const_broad, ETH_ALEN);
/* pairwise key */
} else if (cam_key_type == pairwise_key) {
RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, "set pairwise key\n");
rtlpriv->sec.pairwise_enc_algorithm = enc_alg_in_driver;
memcpy(macaddr, sta->addr, ETH_ALEN);/* real addr */
} else {
RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
"not support key type\n");
return -1;
}
/* this is dead code */
/* adhoc encrypt is done in mac80211,not there*/
/* refer to:To support IBSS, use sw-crypto for GTK */
/* for ADHOC pairwise,use rtlefuse->dev_addr */
if (mac->opmode == NL80211_IFTYPE_ADHOC) {
memcpy(macaddr, rtlefuse->dev_addr, ETH_ALEN);
}
/*
macaddr:
key_index: passed from mac80211
entry_id: free entry of total 32 in hardware
enc_algo:wep,tkip,ccmp
key_data:key in binary
when group key or wep key, sta is null
*/
/* entry_id from 0 to 31 */
entry_id = rtl_cam_get_free_entry(hw, sta, key_index);
if (TOTAL_CAM_ENTRY == entry_id)
return -1;
rtl_cam_clear_one_entry(hw, entry_id);
rtl_cam_add_one_entry(hw, macaddr, key_index, entry_id, enc_algo, key_data);
return 0;
}
void rtl_cam_reset_sec_info(struct ieee80211_hw *hw)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
rtlpriv->sec.use_defaultkey = false;
rtlpriv->sec.pairwise_enc_algorithm = NO_ENCRYPTION;
rtlpriv->sec.group_enc_algorithm = NO_ENCRYPTION;
}
static void rtl_cam_program_entry(struct ieee80211_hw *hw, u32 entry_no,
u8 *mac_addr, u8 *key_cont_128, u16 us_config)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
u32 target_command;
u32 target_content = 0;
u8 entry_i;
RT_PRINT_DATA(rtlpriv, COMP_SEC, DBG_DMESG, "Key content :",
key_cont_128, 16);
/* 2-5 fill 128key,6-7 are reserved */
for (entry_i = 0; entry_i < CAM_CONTENT_COUNT - 2 ; entry_i++) {
target_command = entry_i + CAM_CONTENT_COUNT * entry_no;
target_command = target_command | BIT(31) | BIT(16);
if (entry_i == 0) {
target_content = (u32) (*(mac_addr + 0)) << 16 |
(u32) (*(mac_addr + 1)) << 24 | (u32) us_config;
rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI],
target_content);
rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM],
target_command);
RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
"WRITE %x: %x\n",
rtlpriv->cfg->maps[WCAMI], target_content);
RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
"The Key ID is %d\n", entry_no);
RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
"WRITE %x: %x\n",
rtlpriv->cfg->maps[RWCAM], target_command);
} else if (entry_i == 1) {
target_content = (u32) (*(mac_addr + 5)) << 24 |
(u32) (*(mac_addr + 4)) << 16 |
(u32) (*(mac_addr + 3)) << 8 |
(u32) (*(mac_addr + 2));
rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI],
target_content);
rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM],
target_command);
RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
"WRITE A4: %x\n", target_content);
RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
"WRITE A0: %x\n", target_command);
} else {
target_content =
(u32) (*(key_cont_128 + (entry_i * 4 - 8) + 3)) <<
24 | (u32) (*(key_cont_128 + (entry_i * 4 - 8) + 2))
<< 16 |
(u32) (*(key_cont_128 + (entry_i * 4 - 8) + 1)) << 8
| (u32) (*(key_cont_128 + (entry_i * 4 - 8) + 0));
rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI],
target_content);
rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM],
target_command);
udelay(100);
RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
"WRITE A4: %x\n", target_content);
RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
"WRITE A0: %x\n", target_command);
}
}
RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
"after set key, usconfig:%x\n", us_config);
}
u8 rtl_cam_add_one_entry(struct ieee80211_hw *hw, u8 *mac_addr,
u32 ul_key_id, u32 ul_entry_idx, u32 ul_enc_alg,
u8 *key_content)
{
u32 us_config;
struct rtl_priv *rtlpriv = rtl_priv(hw);
RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
"CAM_ENTRY_ID:%d, KEY_ID=%d, ENC_ALG=%02x,MacAddr %pM\n",
ul_entry_idx, ul_key_id, ul_enc_alg,
mac_addr);
if (ul_key_id == TOTAL_CAM_ENTRY) {
RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
"ulKeyId exceed!\n");
return 0;
}
us_config = CFG_VALID | ((ul_enc_alg) << 2) | ul_key_id;
rtl_cam_program_entry(hw, ul_entry_idx, mac_addr, (u8 *) key_content, us_config);
return 1;
}
EXPORT_SYMBOL(rtl_cam_add_one_entry);
/* troy add */
void rtl_cam_clear_one_entry(struct ieee80211_hw *hw, u32 entry_idx)
{
u32 us_config = 0;
u8 null_key[128] = { 0 };
u8 null_sta[6] = { 0 };
rtl_cam_program_entry(hw, entry_idx, null_sta, (u8 *) null_key, us_config);
}
int rtl_cam_delete_one_entry(struct ieee80211_hw *hw,
u8 *mac_addr, u32 ul_key_id)
{
u32 ul_command;
struct rtl_priv *rtlpriv = rtl_priv(hw);
RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, "key_idx:%d\n", ul_key_id);
ul_command = ul_key_id * CAM_CONTENT_COUNT;
ul_command = ul_command | BIT(31) | BIT(16);
rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI], 0);
rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
"rtl_cam_delete_one_entry(): WRITE A4: %x\n", 0);
RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
"rtl_cam_delete_one_entry(): WRITE A0: %x\n", ul_command);
return 0;
}
EXPORT_SYMBOL(rtl_cam_delete_one_entry);
void rtl_cam_reset_all_entry(struct ieee80211_hw *hw)
{
u32 ul_command;
struct rtl_priv *rtlpriv = rtl_priv(hw);
ul_command = BIT(31) | BIT(30);
rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
}
EXPORT_SYMBOL(rtl_cam_reset_all_entry);
void rtl_cam_mark_invalid(struct ieee80211_hw *hw, u8 uc_index)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
u32 ul_command;
u32 ul_content;
u32 ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_AES];
switch (rtlpriv->sec.pairwise_enc_algorithm) {
case WEP40_ENCRYPTION:
ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_WEP40];
break;
case WEP104_ENCRYPTION:
ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_WEP104];
break;
case TKIP_ENCRYPTION:
ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_TKIP];
break;
case AESCCMP_ENCRYPTION:
ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_AES];
break;
default:
ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_AES];
}
ul_content = (uc_index & 3) | ((u16) (ul_enc_algo) << 2);
ul_content |= BIT(15);
ul_command = CAM_CONTENT_COUNT * uc_index;
ul_command = ul_command | BIT(31) | BIT(16);
rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI], ul_content);
rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
"rtl_cam_mark_invalid(): WRITE A4: %x\n", ul_content);
RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
"rtl_cam_mark_invalid(): WRITE A0: %x\n", ul_command);
}
EXPORT_SYMBOL(rtl_cam_mark_invalid);
void rtl_cam_empty_entry(struct ieee80211_hw *hw, u8 uc_index)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
u32 ul_command;
u32 ul_content;
u32 ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_AES];
u8 entry_i;
switch (rtlpriv->sec.pairwise_enc_algorithm) {
case WEP40_ENCRYPTION:
ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_WEP40];
break;
case WEP104_ENCRYPTION:
ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_WEP104];
break;
case TKIP_ENCRYPTION:
ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_TKIP];
break;
case AESCCMP_ENCRYPTION:
ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_AES];
break;
default:
ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_AES];
}
for (entry_i = 0; entry_i < CAM_CONTENT_COUNT; entry_i++) {
if (entry_i == 0) {
ul_content =
(uc_index & 0x03) | ((u16) (ul_encalgo) << 2);
ul_content |= BIT(15);
} else {
ul_content = 0;
}
ul_command = CAM_CONTENT_COUNT * uc_index + entry_i;
ul_command = ul_command | BIT(31) | BIT(16);
rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI], ul_content);
rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
"rtl_cam_empty_entry(): WRITE A4: %x\n",
ul_content);
RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
"rtl_cam_empty_entry(): WRITE A0: %x\n",
ul_command);
}
}
EXPORT_SYMBOL(rtl_cam_empty_entry);
u8 rtl_cam_get_free_entry(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 key_index)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
u32 bitmap = rtlpriv->sec.cam_bitmap;
u8 entry_idx = 0;/* return val */
struct rtl_sta_info *sta_entry = NULL;
bool found = false;
if (NULL == sta) {
entry_idx = key_index;
rtlpriv->sec.cam_bitmap |= BIT(0) << entry_idx;
found = true;
} else {
for (entry_idx = CAM_PAIRWISE_KEY_OFFSET; entry_idx < TOTAL_CAM_ENTRY; entry_idx++) {
if (((bitmap >> entry_idx) & BIT(0)) == 0) {
rtlpriv->sec.cam_bitmap |= BIT(0) << entry_idx;
sta_entry = (struct rtl_sta_info *) sta->drv_priv;
sta_entry->cam_entry_id = entry_idx;
found = true;
break;
}
}
}
if (found) {
RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
"key_index=%d,cam_bitmap: 0x%x entry_idx=%d\n",
key_index, rtlpriv->sec.cam_bitmap, entry_idx);
return entry_idx;
} else {
RT_TRACE(rtlpriv, COMP_SEC, DBG_EMERG,
"critical error! no entry found!!!\n");
return TOTAL_CAM_ENTRY;
}
}
EXPORT_SYMBOL(rtl_cam_get_free_entry);
void rtl_cam_del_entry(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 key_index)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_sta_info *sta_entry = NULL;
u8 entry_id;
if (NULL != sta) {
RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, "delete according to cam id\n");
sta_entry = (struct rtl_sta_info *) sta->drv_priv;
entry_id = sta_entry->cam_entry_id;
} else {
RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, "delete according to key id\n");
entry_id = key_index;
}
rtlpriv->sec.cam_bitmap &= ~(BIT(0) << entry_id);
rtl_cam_clear_one_entry(hw, entry_id);
RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, "cam_bitmap: 0x%x\n", rtlpriv->sec.cam_bitmap);
return;
}
EXPORT_SYMBOL(rtl_cam_del_entry);
You can’t perform that action at this time.