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Linux 3.9-rc4
[linux-2.6/cjktty.git] / net / mac80211 / debugfs_sta.c
blobc7591f73dbc33296ae26972d87363c2be2e1839c
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%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), TEST(MPSP_OWNER),
78 TEST(MPSP_RECIPIENT));
79 #undef TEST
80 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
81 }
82 STA_OPS(flags);
83
84 static ssize_t sta_num_ps_buf_frames_read(struct file *file,
85 char __user *userbuf,
86 size_t count, loff_t *ppos)
87 {
88 struct sta_info *sta = file->private_data;
89 char buf[17*IEEE80211_NUM_ACS], *p = buf;
90 int ac;
91
92 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
93 p += scnprintf(p, sizeof(buf)+buf-p, "AC%d: %d\n", ac,
94 skb_queue_len(&sta->ps_tx_buf[ac]) +
95 skb_queue_len(&sta->tx_filtered[ac]));
96 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
97 }
98 STA_OPS(num_ps_buf_frames);
99
100 static ssize_t sta_inactive_ms_read(struct file *file, char __user *userbuf,
101 size_t count, loff_t *ppos)
102 {
103 struct sta_info *sta = file->private_data;
104 return mac80211_format_buffer(userbuf, count, ppos, "%d\n",
105 jiffies_to_msecs(jiffies - sta->last_rx));
106 }
107 STA_OPS(inactive_ms);
108
109
110 static ssize_t sta_connected_time_read(struct file *file, char __user *userbuf,
111 size_t count, loff_t *ppos)
112 {
113 struct sta_info *sta = file->private_data;
114 struct timespec uptime;
115 struct tm result;
116 long connected_time_secs;
117 char buf[100];
118 int res;
119 do_posix_clock_monotonic_gettime(&uptime);
120 connected_time_secs = uptime.tv_sec - sta->last_connected;
121 time_to_tm(connected_time_secs, 0, &result);
122 result.tm_year -= 70;
123 result.tm_mday -= 1;
124 res = scnprintf(buf, sizeof(buf),
125 "years - %ld\nmonths - %d\ndays - %d\nclock - %d:%d:%d\n\n",
126 result.tm_year, result.tm_mon, result.tm_mday,
127 result.tm_hour, result.tm_min, result.tm_sec);
128 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
129 }
130 STA_OPS(connected_time);
131
132
133
134 static ssize_t sta_last_seq_ctrl_read(struct file *file, char __user *userbuf,
135 size_t count, loff_t *ppos)
136 {
137 char buf[15*IEEE80211_NUM_TIDS], *p = buf;
138 int i;
139 struct sta_info *sta = file->private_data;
140 for (i = 0; i < IEEE80211_NUM_TIDS; i++)
141 p += scnprintf(p, sizeof(buf)+buf-p, "%x ",
142 le16_to_cpu(sta->last_seq_ctrl[i]));
143 p += scnprintf(p, sizeof(buf)+buf-p, "\n");
144 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
145 }
146 STA_OPS(last_seq_ctrl);
147
148 static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf,
149 size_t count, loff_t *ppos)
150 {
151 char buf[71 + IEEE80211_NUM_TIDS * 40], *p = buf;
152 int i;
153 struct sta_info *sta = file->private_data;
154 struct tid_ampdu_rx *tid_rx;
155 struct tid_ampdu_tx *tid_tx;
156
157 rcu_read_lock();
158
159 p += scnprintf(p, sizeof(buf) + buf - p, "next dialog_token: %#02x\n",
160 sta->ampdu_mlme.dialog_token_allocator + 1);
161 p += scnprintf(p, sizeof(buf) + buf - p,
162 "TID\t\tRX active\tDTKN\tSSN\t\tTX\tDTKN\tpending\n");
163
164 for (i = 0; i < IEEE80211_NUM_TIDS; i++) {
165 tid_rx = rcu_dereference(sta->ampdu_mlme.tid_rx[i]);
166 tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[i]);
167
168 p += scnprintf(p, sizeof(buf) + buf - p, "%02d", i);
169 p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_rx);
170 p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
171 tid_rx ? tid_rx->dialog_token : 0);
172 p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x",
173 tid_rx ? tid_rx->ssn : 0);
174
175 p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_tx);
176 p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
177 tid_tx ? tid_tx->dialog_token : 0);
178 p += scnprintf(p, sizeof(buf) + buf - p, "\t%03d",
179 tid_tx ? skb_queue_len(&tid_tx->pending) : 0);
180 p += scnprintf(p, sizeof(buf) + buf - p, "\n");
181 }
182 rcu_read_unlock();
183
184 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
185 }
186
187 static ssize_t sta_agg_status_write(struct file *file, const char __user *userbuf,
188 size_t count, loff_t *ppos)
189 {
190 char _buf[12], *buf = _buf;
191 struct sta_info *sta = file->private_data;
192 bool start, tx;
193 unsigned long tid;
194 int ret;
195
196 if (count > sizeof(_buf))
197 return -EINVAL;
198
199 if (copy_from_user(buf, userbuf, count))
200 return -EFAULT;
201
202 buf[sizeof(_buf) - 1] = '\0';
203
204 if (strncmp(buf, "tx ", 3) == 0) {
205 buf += 3;
206 tx = true;
207 } else if (strncmp(buf, "rx ", 3) == 0) {
208 buf += 3;
209 tx = false;
210 } else
211 return -EINVAL;
212
213 if (strncmp(buf, "start ", 6) == 0) {
214 buf += 6;
215 start = true;
216 if (!tx)
217 return -EINVAL;
218 } else if (strncmp(buf, "stop ", 5) == 0) {
219 buf += 5;
220 start = false;
221 } else
222 return -EINVAL;
223
224 ret = kstrtoul(buf, 0, &tid);
225 if (ret)
226 return ret;
227
228 if (tid >= IEEE80211_NUM_TIDS)
229 return -EINVAL;
230
231 if (tx) {
232 if (start)
233 ret = ieee80211_start_tx_ba_session(&sta->sta, tid, 5000);
234 else
235 ret = ieee80211_stop_tx_ba_session(&sta->sta, tid);
236 } else {
237 __ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT,
238 3, true);
239 ret = 0;
240 }
241
242 return ret ?: count;
243 }
244 STA_OPS_RW(agg_status);
245
246 static ssize_t sta_ht_capa_read(struct file *file, char __user *userbuf,
247 size_t count, loff_t *ppos)
248 {
249 #define PRINT_HT_CAP(_cond, _str) \
250 do { \
251 if (_cond) \
252 p += scnprintf(p, sizeof(buf)+buf-p, "\t" _str "\n"); \
253 } while (0)
254 char buf[512], *p = buf;
255 int i;
256 struct sta_info *sta = file->private_data;
257 struct ieee80211_sta_ht_cap *htc = &sta->sta.ht_cap;
258
259 p += scnprintf(p, sizeof(buf) + buf - p, "ht %ssupported\n",
260 htc->ht_supported ? "" : "not ");
261 if (htc->ht_supported) {
262 p += scnprintf(p, sizeof(buf)+buf-p, "cap: %#.4x\n", htc->cap);
263
264 PRINT_HT_CAP((htc->cap & BIT(0)), "RX LDPC");
265 PRINT_HT_CAP((htc->cap & BIT(1)), "HT20/HT40");
266 PRINT_HT_CAP(!(htc->cap & BIT(1)), "HT20");
267
268 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 0, "Static SM Power Save");
269 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 1, "Dynamic SM Power Save");
270 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 3, "SM Power Save disabled");
271
272 PRINT_HT_CAP((htc->cap & BIT(4)), "RX Greenfield");
273 PRINT_HT_CAP((htc->cap & BIT(5)), "RX HT20 SGI");
274 PRINT_HT_CAP((htc->cap & BIT(6)), "RX HT40 SGI");
275 PRINT_HT_CAP((htc->cap & BIT(7)), "TX STBC");
276
277 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 0, "No RX STBC");
278 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 1, "RX STBC 1-stream");
279 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 2, "RX STBC 2-streams");
280 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 3, "RX STBC 3-streams");
281
282 PRINT_HT_CAP((htc->cap & BIT(10)), "HT Delayed Block Ack");
283
284 PRINT_HT_CAP(!(htc->cap & BIT(11)), "Max AMSDU length: "
285 "3839 bytes");
286 PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: "
287 "7935 bytes");
288
289 /*
290 * For beacons and probe response this would mean the BSS
291 * does or does not allow the usage of DSSS/CCK HT40.
292 * Otherwise it means the STA does or does not use
293 * DSSS/CCK HT40.
294 */
295 PRINT_HT_CAP((htc->cap & BIT(12)), "DSSS/CCK HT40");
296 PRINT_HT_CAP(!(htc->cap & BIT(12)), "No DSSS/CCK HT40");
297
298 /* BIT(13) is reserved */
299
300 PRINT_HT_CAP((htc->cap & BIT(14)), "40 MHz Intolerant");
301
302 PRINT_HT_CAP((htc->cap & BIT(15)), "L-SIG TXOP protection");
303
304 p += scnprintf(p, sizeof(buf)+buf-p, "ampdu factor/density: %d/%d\n",
305 htc->ampdu_factor, htc->ampdu_density);
306 p += scnprintf(p, sizeof(buf)+buf-p, "MCS mask:");
307
308 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
309 p += scnprintf(p, sizeof(buf)+buf-p, " %.2x",
310 htc->mcs.rx_mask[i]);
311 p += scnprintf(p, sizeof(buf)+buf-p, "\n");
312
313 /* If not set this is meaningless */
314 if (le16_to_cpu(htc->mcs.rx_highest)) {
315 p += scnprintf(p, sizeof(buf)+buf-p,
316 "MCS rx highest: %d Mbps\n",
317 le16_to_cpu(htc->mcs.rx_highest));
318 }
319
320 p += scnprintf(p, sizeof(buf)+buf-p, "MCS tx params: %x\n",
321 htc->mcs.tx_params);
322 }
323
324 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
325 }
326 STA_OPS(ht_capa);
327
328 static ssize_t sta_current_tx_rate_read(struct file *file, char __user *userbuf,
329 size_t count, loff_t *ppos)
330 {
331 struct sta_info *sta = file->private_data;
332 struct rate_info rinfo;
333 u16 rate;
334 sta_set_rate_info_tx(sta, &sta->last_tx_rate, &rinfo);
335 rate = cfg80211_calculate_bitrate(&rinfo);
336
337 return mac80211_format_buffer(userbuf, count, ppos,
338 "%d.%d MBit/s\n",
339 rate/10, rate%10);
340 }
341 STA_OPS(current_tx_rate);
342
343 static ssize_t sta_last_rx_rate_read(struct file *file, char __user *userbuf,
344 size_t count, loff_t *ppos)
345 {
346 struct sta_info *sta = file->private_data;
347 struct rate_info rinfo;
348 u16 rate;
349
350 sta_set_rate_info_rx(sta, &rinfo);
351
352 rate = cfg80211_calculate_bitrate(&rinfo);
353
354 return mac80211_format_buffer(userbuf, count, ppos,
355 "%d.%d MBit/s\n",
356 rate/10, rate%10);
357 }
358 STA_OPS(last_rx_rate);
359
360 #define DEBUGFS_ADD(name) \
361 debugfs_create_file(#name, 0400, \
362 sta->debugfs.dir, sta, &sta_ ##name## _ops);
363
364 #define DEBUGFS_ADD_COUNTER(name, field) \
365 if (sizeof(sta->field) == sizeof(u32)) \
366 debugfs_create_u32(#name, 0400, sta->debugfs.dir, \
367 (u32 *) &sta->field); \
368 else \
369 debugfs_create_u64(#name, 0400, sta->debugfs.dir, \
370 (u64 *) &sta->field);
371
372 void ieee80211_sta_debugfs_add(struct sta_info *sta)
373 {
374 struct ieee80211_local *local = sta->local;
375 struct ieee80211_sub_if_data *sdata = sta->sdata;
376 struct dentry *stations_dir = sta->sdata->debugfs.subdir_stations;
377 u8 mac[3*ETH_ALEN];
378
379 sta->debugfs.add_has_run = true;
380
381 if (!stations_dir)
382 return;
383
384 snprintf(mac, sizeof(mac), "%pM", sta->sta.addr);
385
386 /*
387 * This might fail due to a race condition:
388 * When mac80211 unlinks a station, the debugfs entries
389 * remain, but it is already possible to link a new
390 * station with the same address which triggers adding
391 * it to debugfs; therefore, if the old station isn't
392 * destroyed quickly enough the old station's debugfs
393 * dir might still be around.
394 */
395 sta->debugfs.dir = debugfs_create_dir(mac, stations_dir);
396 if (!sta->debugfs.dir)
397 return;
398
399 DEBUGFS_ADD(flags);
400 DEBUGFS_ADD(num_ps_buf_frames);
401 DEBUGFS_ADD(inactive_ms);
402 DEBUGFS_ADD(connected_time);
403 DEBUGFS_ADD(last_seq_ctrl);
404 DEBUGFS_ADD(agg_status);
405 DEBUGFS_ADD(dev);
406 DEBUGFS_ADD(last_signal);
407 DEBUGFS_ADD(ht_capa);
408 DEBUGFS_ADD(last_ack_signal);
409 DEBUGFS_ADD(current_tx_rate);
410 DEBUGFS_ADD(last_rx_rate);
411
412 DEBUGFS_ADD_COUNTER(rx_packets, rx_packets);
413 DEBUGFS_ADD_COUNTER(tx_packets, tx_packets);
414 DEBUGFS_ADD_COUNTER(rx_bytes, rx_bytes);
415 DEBUGFS_ADD_COUNTER(tx_bytes, tx_bytes);
416 DEBUGFS_ADD_COUNTER(rx_duplicates, num_duplicates);
417 DEBUGFS_ADD_COUNTER(rx_fragments, rx_fragments);
418 DEBUGFS_ADD_COUNTER(rx_dropped, rx_dropped);
419 DEBUGFS_ADD_COUNTER(tx_fragments, tx_fragments);
420 DEBUGFS_ADD_COUNTER(tx_filtered, tx_filtered_count);
421 DEBUGFS_ADD_COUNTER(tx_retry_failed, tx_retry_failed);
422 DEBUGFS_ADD_COUNTER(tx_retry_count, tx_retry_count);
423 DEBUGFS_ADD_COUNTER(wep_weak_iv_count, wep_weak_iv_count);
424
425 drv_sta_add_debugfs(local, sdata, &sta->sta, sta->debugfs.dir);
426 }
427
428 void ieee80211_sta_debugfs_remove(struct sta_info *sta)
429 {
430 struct ieee80211_local *local = sta->local;
431 struct ieee80211_sub_if_data *sdata = sta->sdata;
432
433 drv_sta_remove_debugfs(local, sdata, &sta->sta, sta->debugfs.dir);
434 debugfs_remove_recursive(sta->debugfs.dir);
435 sta->debugfs.dir = NULL;
436 }
CJK support for tty framebuffer vt