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Merge branches 'for-3.9/logitech', 'for-3.9/multitouch', 'for-3.9/ntrig', 'for-3...
[deliverable/linux.git] / net / mac80211 / debugfs_sta.c
1 /*
2 * Copyright 2003-2005 Devicescape Software, Inc.
3 * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
4 * Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11 #include <linux/debugfs.h>
12 #include <linux/ieee80211.h>
13 #include "ieee80211_i.h"
14 #include "debugfs.h"
15 #include "debugfs_sta.h"
16 #include "sta_info.h"
17 #include "driver-ops.h"
18
19 /* sta attributtes */
20
21 #define STA_READ(name, field, format_string) \
22 static ssize_t sta_ ##name## _read(struct file *file, \
23 char __user *userbuf, \
24 size_t count, loff_t *ppos) \
25 { \
26 struct sta_info *sta = file->private_data; \
27 return mac80211_format_buffer(userbuf, count, ppos, \
28 format_string, sta->field); \
29 }
30 #define STA_READ_D(name, field) STA_READ(name, field, "%d\n")
31 #define STA_READ_U(name, field) STA_READ(name, field, "%u\n")
32 #define STA_READ_S(name, field) STA_READ(name, field, "%s\n")
33
34 #define STA_OPS(name) \
35 static const struct file_operations sta_ ##name## _ops = { \
36 .read = sta_##name##_read, \
37 .open = simple_open, \
38 .llseek = generic_file_llseek, \
39 }
40
41 #define STA_OPS_RW(name) \
42 static const struct file_operations sta_ ##name## _ops = { \
43 .read = sta_##name##_read, \
44 .write = sta_##name##_write, \
45 .open = simple_open, \
46 .llseek = generic_file_llseek, \
47 }
48
49 #define STA_FILE(name, field, format) \
50 STA_READ_##format(name, field) \
51 STA_OPS(name)
52
53 STA_FILE(aid, sta.aid, D);
54 STA_FILE(dev, sdata->name, S);
55 STA_FILE(last_signal, last_signal, D);
56 STA_FILE(last_ack_signal, last_ack_signal, D);
57
58 static ssize_t sta_flags_read(struct file *file, char __user *userbuf,
59 size_t count, loff_t *ppos)
60 {
61 char buf[121];
62 struct sta_info *sta = file->private_data;
63
64 #define TEST(flg) \
65 test_sta_flag(sta, WLAN_STA_##flg) ? #flg "\n" : ""
66
67 int res = scnprintf(buf, sizeof(buf),
68 "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
69 TEST(AUTH), TEST(ASSOC), TEST(PS_STA),
70 TEST(PS_DRIVER), TEST(AUTHORIZED),
71 TEST(SHORT_PREAMBLE),
72 TEST(WME), TEST(WDS), TEST(CLEAR_PS_FILT),
73 TEST(MFP), TEST(BLOCK_BA), TEST(PSPOLL),
74 TEST(UAPSD), TEST(SP), TEST(TDLS_PEER),
75 TEST(TDLS_PEER_AUTH), TEST(4ADDR_EVENT),
76 TEST(INSERTED), TEST(RATE_CONTROL),
77 TEST(TOFFSET_KNOWN));
78 #undef TEST
79 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
80 }
81 STA_OPS(flags);
82
83 static ssize_t sta_num_ps_buf_frames_read(struct file *file,
84 char __user *userbuf,
85 size_t count, loff_t *ppos)
86 {
87 struct sta_info *sta = file->private_data;
88 char buf[17*IEEE80211_NUM_ACS], *p = buf;
89 int ac;
90
91 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
92 p += scnprintf(p, sizeof(buf)+buf-p, "AC%d: %d\n", ac,
93 skb_queue_len(&sta->ps_tx_buf[ac]) +
94 skb_queue_len(&sta->tx_filtered[ac]));
95 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
96 }
97 STA_OPS(num_ps_buf_frames);
98
99 static ssize_t sta_inactive_ms_read(struct file *file, char __user *userbuf,
100 size_t count, loff_t *ppos)
101 {
102 struct sta_info *sta = file->private_data;
103 return mac80211_format_buffer(userbuf, count, ppos, "%d\n",
104 jiffies_to_msecs(jiffies - sta->last_rx));
105 }
106 STA_OPS(inactive_ms);
107
108
109 static ssize_t sta_connected_time_read(struct file *file, char __user *userbuf,
110 size_t count, loff_t *ppos)
111 {
112 struct sta_info *sta = file->private_data;
113 struct timespec uptime;
114 struct tm result;
115 long connected_time_secs;
116 char buf[100];
117 int res;
118 do_posix_clock_monotonic_gettime(&uptime);
119 connected_time_secs = uptime.tv_sec - sta->last_connected;
120 time_to_tm(connected_time_secs, 0, &result);
121 result.tm_year -= 70;
122 result.tm_mday -= 1;
123 res = scnprintf(buf, sizeof(buf),
124 "years - %ld\nmonths - %d\ndays - %d\nclock - %d:%d:%d\n\n",
125 result.tm_year, result.tm_mon, result.tm_mday,
126 result.tm_hour, result.tm_min, result.tm_sec);
127 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
128 }
129 STA_OPS(connected_time);
130
131
132
133 static ssize_t sta_last_seq_ctrl_read(struct file *file, char __user *userbuf,
134 size_t count, loff_t *ppos)
135 {
136 char buf[15*IEEE80211_NUM_TIDS], *p = buf;
137 int i;
138 struct sta_info *sta = file->private_data;
139 for (i = 0; i < IEEE80211_NUM_TIDS; i++)
140 p += scnprintf(p, sizeof(buf)+buf-p, "%x ",
141 le16_to_cpu(sta->last_seq_ctrl[i]));
142 p += scnprintf(p, sizeof(buf)+buf-p, "\n");
143 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
144 }
145 STA_OPS(last_seq_ctrl);
146
147 static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf,
148 size_t count, loff_t *ppos)
149 {
150 char buf[71 + IEEE80211_NUM_TIDS * 40], *p = buf;
151 int i;
152 struct sta_info *sta = file->private_data;
153 struct tid_ampdu_rx *tid_rx;
154 struct tid_ampdu_tx *tid_tx;
155
156 rcu_read_lock();
157
158 p += scnprintf(p, sizeof(buf) + buf - p, "next dialog_token: %#02x\n",
159 sta->ampdu_mlme.dialog_token_allocator + 1);
160 p += scnprintf(p, sizeof(buf) + buf - p,
161 "TID\t\tRX active\tDTKN\tSSN\t\tTX\tDTKN\tpending\n");
162
163 for (i = 0; i < IEEE80211_NUM_TIDS; i++) {
164 tid_rx = rcu_dereference(sta->ampdu_mlme.tid_rx[i]);
165 tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[i]);
166
167 p += scnprintf(p, sizeof(buf) + buf - p, "%02d", i);
168 p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_rx);
169 p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
170 tid_rx ? tid_rx->dialog_token : 0);
171 p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x",
172 tid_rx ? tid_rx->ssn : 0);
173
174 p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_tx);
175 p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
176 tid_tx ? tid_tx->dialog_token : 0);
177 p += scnprintf(p, sizeof(buf) + buf - p, "\t%03d",
178 tid_tx ? skb_queue_len(&tid_tx->pending) : 0);
179 p += scnprintf(p, sizeof(buf) + buf - p, "\n");
180 }
181 rcu_read_unlock();
182
183 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
184 }
185
186 static ssize_t sta_agg_status_write(struct file *file, const char __user *userbuf,
187 size_t count, loff_t *ppos)
188 {
189 char _buf[12], *buf = _buf;
190 struct sta_info *sta = file->private_data;
191 bool start, tx;
192 unsigned long tid;
193 int ret;
194
195 if (count > sizeof(_buf))
196 return -EINVAL;
197
198 if (copy_from_user(buf, userbuf, count))
199 return -EFAULT;
200
201 buf[sizeof(_buf) - 1] = '\0';
202
203 if (strncmp(buf, "tx ", 3) == 0) {
204 buf += 3;
205 tx = true;
206 } else if (strncmp(buf, "rx ", 3) == 0) {
207 buf += 3;
208 tx = false;
209 } else
210 return -EINVAL;
211
212 if (strncmp(buf, "start ", 6) == 0) {
213 buf += 6;
214 start = true;
215 if (!tx)
216 return -EINVAL;
217 } else if (strncmp(buf, "stop ", 5) == 0) {
218 buf += 5;
219 start = false;
220 } else
221 return -EINVAL;
222
223 ret = kstrtoul(buf, 0, &tid);
224 if (ret)
225 return ret;
226
227 if (tid >= IEEE80211_NUM_TIDS)
228 return -EINVAL;
229
230 if (tx) {
231 if (start)
232 ret = ieee80211_start_tx_ba_session(&sta->sta, tid, 5000);
233 else
234 ret = ieee80211_stop_tx_ba_session(&sta->sta, tid);
235 } else {
236 __ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT,
237 3, true);
238 ret = 0;
239 }
240
241 return ret ?: count;
242 }
243 STA_OPS_RW(agg_status);
244
245 static ssize_t sta_ht_capa_read(struct file *file, char __user *userbuf,
246 size_t count, loff_t *ppos)
247 {
248 #define PRINT_HT_CAP(_cond, _str) \
249 do { \
250 if (_cond) \
251 p += scnprintf(p, sizeof(buf)+buf-p, "\t" _str "\n"); \
252 } while (0)
253 char buf[512], *p = buf;
254 int i;
255 struct sta_info *sta = file->private_data;
256 struct ieee80211_sta_ht_cap *htc = &sta->sta.ht_cap;
257
258 p += scnprintf(p, sizeof(buf) + buf - p, "ht %ssupported\n",
259 htc->ht_supported ? "" : "not ");
260 if (htc->ht_supported) {
261 p += scnprintf(p, sizeof(buf)+buf-p, "cap: %#.4x\n", htc->cap);
262
263 PRINT_HT_CAP((htc->cap & BIT(0)), "RX LDPC");
264 PRINT_HT_CAP((htc->cap & BIT(1)), "HT20/HT40");
265 PRINT_HT_CAP(!(htc->cap & BIT(1)), "HT20");
266
267 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 0, "Static SM Power Save");
268 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 1, "Dynamic SM Power Save");
269 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 3, "SM Power Save disabled");
270
271 PRINT_HT_CAP((htc->cap & BIT(4)), "RX Greenfield");
272 PRINT_HT_CAP((htc->cap & BIT(5)), "RX HT20 SGI");
273 PRINT_HT_CAP((htc->cap & BIT(6)), "RX HT40 SGI");
274 PRINT_HT_CAP((htc->cap & BIT(7)), "TX STBC");
275
276 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 0, "No RX STBC");
277 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 1, "RX STBC 1-stream");
278 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 2, "RX STBC 2-streams");
279 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 3, "RX STBC 3-streams");
280
281 PRINT_HT_CAP((htc->cap & BIT(10)), "HT Delayed Block Ack");
282
283 PRINT_HT_CAP(!(htc->cap & BIT(11)), "Max AMSDU length: "
284 "3839 bytes");
285 PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: "
286 "7935 bytes");
287
288 /*
289 * For beacons and probe response this would mean the BSS
290 * does or does not allow the usage of DSSS/CCK HT40.
291 * Otherwise it means the STA does or does not use
292 * DSSS/CCK HT40.
293 */
294 PRINT_HT_CAP((htc->cap & BIT(12)), "DSSS/CCK HT40");
295 PRINT_HT_CAP(!(htc->cap & BIT(12)), "No DSSS/CCK HT40");
296
297 /* BIT(13) is reserved */
298
299 PRINT_HT_CAP((htc->cap & BIT(14)), "40 MHz Intolerant");
300
301 PRINT_HT_CAP((htc->cap & BIT(15)), "L-SIG TXOP protection");
302
303 p += scnprintf(p, sizeof(buf)+buf-p, "ampdu factor/density: %d/%d\n",
304 htc->ampdu_factor, htc->ampdu_density);
305 p += scnprintf(p, sizeof(buf)+buf-p, "MCS mask:");
306
307 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
308 p += scnprintf(p, sizeof(buf)+buf-p, " %.2x",
309 htc->mcs.rx_mask[i]);
310 p += scnprintf(p, sizeof(buf)+buf-p, "\n");
311
312 /* If not set this is meaningless */
313 if (le16_to_cpu(htc->mcs.rx_highest)) {
314 p += scnprintf(p, sizeof(buf)+buf-p,
315 "MCS rx highest: %d Mbps\n",
316 le16_to_cpu(htc->mcs.rx_highest));
317 }
318
319 p += scnprintf(p, sizeof(buf)+buf-p, "MCS tx params: %x\n",
320 htc->mcs.tx_params);
321 }
322
323 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
324 }
325 STA_OPS(ht_capa);
326
327 static ssize_t sta_current_tx_rate_read(struct file *file, char __user *userbuf,
328 size_t count, loff_t *ppos)
329 {
330 struct sta_info *sta = file->private_data;
331 struct rate_info rinfo;
332 u16 rate;
333 sta_set_rate_info_tx(sta, &sta->last_tx_rate, &rinfo);
334 rate = cfg80211_calculate_bitrate(&rinfo);
335
336 return mac80211_format_buffer(userbuf, count, ppos,
337 "%d.%d MBit/s\n",
338 rate/10, rate%10);
339 }
340 STA_OPS(current_tx_rate);
341
342 static ssize_t sta_last_rx_rate_read(struct file *file, char __user *userbuf,
343 size_t count, loff_t *ppos)
344 {
345 struct sta_info *sta = file->private_data;
346 struct rate_info rinfo;
347 u16 rate;
348
349 sta_set_rate_info_rx(sta, &rinfo);
350
351 rate = cfg80211_calculate_bitrate(&rinfo);
352
353 return mac80211_format_buffer(userbuf, count, ppos,
354 "%d.%d MBit/s\n",
355 rate/10, rate%10);
356 }
357 STA_OPS(last_rx_rate);
358
359 #define DEBUGFS_ADD(name) \
360 debugfs_create_file(#name, 0400, \
361 sta->debugfs.dir, sta, &sta_ ##name## _ops);
362
363 #define DEBUGFS_ADD_COUNTER(name, field) \
364 if (sizeof(sta->field) == sizeof(u32)) \
365 debugfs_create_u32(#name, 0400, sta->debugfs.dir, \
366 (u32 *) &sta->field); \
367 else \
368 debugfs_create_u64(#name, 0400, sta->debugfs.dir, \
369 (u64 *) &sta->field);
370
371 void ieee80211_sta_debugfs_add(struct sta_info *sta)
372 {
373 struct ieee80211_local *local = sta->local;
374 struct ieee80211_sub_if_data *sdata = sta->sdata;
375 struct dentry *stations_dir = sta->sdata->debugfs.subdir_stations;
376 u8 mac[3*ETH_ALEN];
377
378 sta->debugfs.add_has_run = true;
379
380 if (!stations_dir)
381 return;
382
383 snprintf(mac, sizeof(mac), "%pM", sta->sta.addr);
384
385 /*
386 * This might fail due to a race condition:
387 * When mac80211 unlinks a station, the debugfs entries
388 * remain, but it is already possible to link a new
389 * station with the same address which triggers adding
390 * it to debugfs; therefore, if the old station isn't
391 * destroyed quickly enough the old station's debugfs
392 * dir might still be around.
393 */
394 sta->debugfs.dir = debugfs_create_dir(mac, stations_dir);
395 if (!sta->debugfs.dir)
396 return;
397
398 DEBUGFS_ADD(flags);
399 DEBUGFS_ADD(num_ps_buf_frames);
400 DEBUGFS_ADD(inactive_ms);
401 DEBUGFS_ADD(connected_time);
402 DEBUGFS_ADD(last_seq_ctrl);
403 DEBUGFS_ADD(agg_status);
404 DEBUGFS_ADD(dev);
405 DEBUGFS_ADD(last_signal);
406 DEBUGFS_ADD(ht_capa);
407 DEBUGFS_ADD(last_ack_signal);
408 DEBUGFS_ADD(current_tx_rate);
409 DEBUGFS_ADD(last_rx_rate);
410
411 DEBUGFS_ADD_COUNTER(rx_packets, rx_packets);
412 DEBUGFS_ADD_COUNTER(tx_packets, tx_packets);
413 DEBUGFS_ADD_COUNTER(rx_bytes, rx_bytes);
414 DEBUGFS_ADD_COUNTER(tx_bytes, tx_bytes);
415 DEBUGFS_ADD_COUNTER(rx_duplicates, num_duplicates);
416 DEBUGFS_ADD_COUNTER(rx_fragments, rx_fragments);
417 DEBUGFS_ADD_COUNTER(rx_dropped, rx_dropped);
418 DEBUGFS_ADD_COUNTER(tx_fragments, tx_fragments);
419 DEBUGFS_ADD_COUNTER(tx_filtered, tx_filtered_count);
420 DEBUGFS_ADD_COUNTER(tx_retry_failed, tx_retry_failed);
421 DEBUGFS_ADD_COUNTER(tx_retry_count, tx_retry_count);
422 DEBUGFS_ADD_COUNTER(wep_weak_iv_count, wep_weak_iv_count);
423
424 drv_sta_add_debugfs(local, sdata, &sta->sta, sta->debugfs.dir);
425 }
426
427 void ieee80211_sta_debugfs_remove(struct sta_info *sta)
428 {
429 struct ieee80211_local *local = sta->local;
430 struct ieee80211_sub_if_data *sdata = sta->sdata;
431
432 drv_sta_remove_debugfs(local, sdata, &sta->sta, sta->debugfs.dir);
433 debugfs_remove_recursive(sta->debugfs.dir);
434 sta->debugfs.dir = NULL;
435 }
Linux kernel - Deliverables
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