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
|
/*
* WUSB Wire Adapter: WLP interface
* Sysfs interfaces
*
* Copyright (C) 2005-2006 Intel Corporation
* Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
* 2 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
* 02110-1301, USA.
*
*
* FIXME: docs
*/
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/device.h>
#include "i1480u-wlp.h"
/**
*
* @dev: Class device from the net_device; assumed refcnted.
*
* Yes, I don't lock--we assume it is refcounted and I am getting a
* single byte value that is kind of atomic to read.
*/
ssize_t uwb_phy_rate_show(const struct wlp_options *options, char *buf)
{
return sprintf(buf, "%u\n",
wlp_tx_hdr_phy_rate(&options->def_tx_hdr));
}
EXPORT_SYMBOL_GPL(uwb_phy_rate_show);
ssize_t uwb_phy_rate_store(struct wlp_options *options,
const char *buf, size_t size)
{
ssize_t result;
unsigned rate;
result = sscanf(buf, "%u\n", &rate);
if (result != 1) {
result = -EINVAL;
goto out;
}
result = -EINVAL;
if (rate >= UWB_PHY_RATE_INVALID)
goto out;
wlp_tx_hdr_set_phy_rate(&options->def_tx_hdr, rate);
result = 0;
out:
return result < 0 ? result : size;
}
EXPORT_SYMBOL_GPL(uwb_phy_rate_store);
ssize_t uwb_rts_cts_show(const struct wlp_options *options, char *buf)
{
return sprintf(buf, "%u\n",
wlp_tx_hdr_rts_cts(&options->def_tx_hdr));
}
EXPORT_SYMBOL_GPL(uwb_rts_cts_show);
ssize_t uwb_rts_cts_store(struct wlp_options *options,
const char *buf, size_t size)
{
ssize_t result;
unsigned value;
result = sscanf(buf, "%u\n", &value);
if (result != 1) {
result = -EINVAL;
goto out;
}
result = -EINVAL;
wlp_tx_hdr_set_rts_cts(&options->def_tx_hdr, !!value);
result = 0;
out:
return result < 0 ? result : size;
}
EXPORT_SYMBOL_GPL(uwb_rts_cts_store);
ssize_t uwb_ack_policy_show(const struct wlp_options *options, char *buf)
{
return sprintf(buf, "%u\n",
wlp_tx_hdr_ack_policy(&options->def_tx_hdr));
}
EXPORT_SYMBOL_GPL(uwb_ack_policy_show);
ssize_t uwb_ack_policy_store(struct wlp_options *options,
const char *buf, size_t size)
{
ssize_t result;
unsigned value;
result = sscanf(buf, "%u\n", &value);
if (result != 1 || value > UWB_ACK_B_REQ) {
result = -EINVAL;
goto out;
}
wlp_tx_hdr_set_ack_policy(&options->def_tx_hdr, value);
result = 0;
out:
return result < 0 ? result : size;
}
EXPORT_SYMBOL_GPL(uwb_ack_policy_store);
/**
* Show the PCA base priority.
*
* We can access without locking, as the value is (for now) orthogonal
* to other values.
*/
ssize_t uwb_pca_base_priority_show(const struct wlp_options *options,
char *buf)
{
return sprintf(buf, "%u\n",
options->pca_base_priority);
}
EXPORT_SYMBOL_GPL(uwb_pca_base_priority_show);
/**
* Set the PCA base priority.
*
* We can access without locking, as the value is (for now) orthogonal
* to other values.
*/
ssize_t uwb_pca_base_priority_store(struct wlp_options *options,
const char *buf, size_t size)
{
ssize_t result = -EINVAL;
u8 pca_base_priority;
result = sscanf(buf, "%hhu\n", &pca_base_priority);
if (result != 1) {
result = -EINVAL;
goto out;
}
result = -EINVAL;
if (pca_base_priority >= 8)
goto out;
options->pca_base_priority = pca_base_priority;
/* Update TX header if we are currently using PCA. */
if (result >= 0 && (wlp_tx_hdr_delivery_id_type(&options->def_tx_hdr) & WLP_DRP) == 0)
wlp_tx_hdr_set_delivery_id_type(&options->def_tx_hdr, options->pca_base_priority);
result = 0;
out:
return result < 0 ? result : size;
}
EXPORT_SYMBOL_GPL(uwb_pca_base_priority_store);
/**
* Show current inflight values
*
* Will print the current MAX and THRESHOLD values for the basic flow
* control. In addition it will report how many times the TX queue needed
* to be restarted since the last time this query was made.
*/
static ssize_t wlp_tx_inflight_show(struct i1480u_tx_inflight *inflight,
char *buf)
{
ssize_t result;
unsigned long sec_elapsed = (jiffies - inflight->restart_ts)/HZ;
unsigned long restart_count = atomic_read(&inflight->restart_count);
result = scnprintf(buf, PAGE_SIZE, "%lu %lu %d %lu %lu %lu\n"
"#read: threshold max inflight_count restarts "
"seconds restarts/sec\n"
"#write: threshold max\n",
inflight->threshold, inflight->max,
atomic_read(&inflight->count),
restart_count, sec_elapsed,
sec_elapsed == 0 ? 0 : restart_count/sec_elapsed);
inflight->restart_ts = jiffies;
atomic_set(&inflight->restart_count, 0);
return result;
}
static
ssize_t wlp_tx_inflight_store(struct i1480u_tx_inflight *inflight,
const char *buf, size_t size)
{
unsigned long in_threshold, in_max;
ssize_t result;
result = sscanf(buf, "%lu %lu", &in_threshold, &in_max);
if (result != 2)
return -EINVAL;
if (in_max <= in_threshold)
return -EINVAL;
inflight->max = in_max;
inflight->threshold = in_threshold;
return size;
}
/*
* Glue (or function adaptors) for accesing info on sysfs
*
* [we need this indirection because the PCI driver does almost the
* same]
*
* Linux 2.6.21 changed how 'struct netdevice' does attributes (from
* having a 'struct class_dev' to having a 'struct device'). That is
* quite of a pain.
*
* So we try to abstract that here. i1480u_SHOW() and i1480u_STORE()
* create adaptors for extracting the 'struct i1480u' from a 'struct
* dev' and calling a function for doing a sysfs operation (as we have
* them factorized already). i1480u_ATTR creates the attribute file
* (CLASS_DEVICE_ATTR or DEVICE_ATTR) and i1480u_ATTR_NAME produces a
* class_device_attr_NAME or device_attr_NAME (for group registration).
*/
#define i1480u_SHOW(name, fn, param) \
static ssize_t i1480u_show_##name(struct device *dev, \
struct device_attribute *attr,\
char *buf) \
{ \
struct i1480u *i1480u = netdev_priv(to_net_dev(dev)); \
return fn(&i1480u->param, buf); \
}
#define i1480u_STORE(name, fn, param) \
static ssize_t i1480u_store_##name(struct device *dev, \
struct device_attribute *attr,\
const char *buf, size_t size)\
{ \
struct i1480u *i1480u = netdev_priv(to_net_dev(dev)); \
return fn(&i1480u->param, buf, size); \
}
#define i1480u_ATTR(name, perm) static DEVICE_ATTR(name, perm, \
i1480u_show_##name,\
i1480u_store_##name)
#define i1480u_ATTR_SHOW(name) static DEVICE_ATTR(name, \
S_IRUGO, \
i1480u_show_##name, NULL)
#define i1480u_ATTR_NAME(a) (dev_attr_##a)
/*
* Sysfs adaptors
*/
i1480u_SHOW(uwb_phy_rate, uwb_phy_rate_show, options);
i1480u_STORE(uwb_phy_rate, uwb_phy_rate_store, options);
i1480u_ATTR(uwb_phy_rate, S_IRUGO | S_IWUSR);
i1480u_SHOW(uwb_rts_cts, uwb_rts_cts_show, options);
i1480u_STORE(uwb_rts_cts, uwb_rts_cts_store, options);
i1480u_ATTR(uwb_rts_cts, S_IRUGO | S_IWUSR);
i1480u_SHOW(uwb_ack_policy, uwb_ack_policy_show, options);
i1480u_STORE(uwb_ack_policy, uwb_ack_policy_store, options);
i1480u_ATTR(uwb_ack_policy, S_IRUGO | S_IWUSR);
i1480u_SHOW(uwb_pca_base_priority, uwb_pca_base_priority_show, options);
i1480u_STORE(uwb_pca_base_priority, uwb_pca_base_priority_store, options);
i1480u_ATTR(uwb_pca_base_priority, S_IRUGO | S_IWUSR);
i1480u_SHOW(wlp_eda, wlp_eda_show, wlp);
i1480u_STORE(wlp_eda, wlp_eda_store, wlp);
i1480u_ATTR(wlp_eda, S_IRUGO | S_IWUSR);
i1480u_SHOW(wlp_uuid, wlp_uuid_show, wlp);
i1480u_STORE(wlp_uuid, wlp_uuid_store, wlp);
i1480u_ATTR(wlp_uuid, S_IRUGO | S_IWUSR);
i1480u_SHOW(wlp_dev_name, wlp_dev_name_show, wlp);
i1480u_STORE(wlp_dev_name, wlp_dev_name_store, wlp);
i1480u_ATTR(wlp_dev_name, S_IRUGO | S_IWUSR);
i1480u_SHOW(wlp_dev_manufacturer, wlp_dev_manufacturer_show, wlp);
i1480u_STORE(wlp_dev_manufacturer, wlp_dev_manufacturer_store, wlp);
i1480u_ATTR(wlp_dev_manufacturer, S_IRUGO | S_IWUSR);
i1480u_SHOW(wlp_dev_model_name, wlp_dev_model_name_show, wlp);
i1480u_STORE(wlp_dev_model_name, wlp_dev_model_name_store, wlp);
i1480u_ATTR(wlp_dev_model_name, S_IRUGO | S_IWUSR);
i1480u_SHOW(wlp_dev_model_nr, wlp_dev_model_nr_show, wlp);
i1480u_STORE(wlp_dev_model_nr, wlp_dev_model_nr_store, wlp);
i1480u_ATTR(wlp_dev_model_nr, S_IRUGO
|