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Jiri Bence9f207f2007-05-05 11:46:38 -07001/*
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
18/* sta attributtes */
19
Eliad Peller07caf9d2010-10-27 14:58:29 +020020#define STA_READ(name, field, format_string) \
Jiri Bence9f207f2007-05-05 11:46:38 -070021static ssize_t sta_ ##name## _read(struct file *file, \
22 char __user *userbuf, \
23 size_t count, loff_t *ppos) \
24{ \
Jiri Bence9f207f2007-05-05 11:46:38 -070025 struct sta_info *sta = file->private_data; \
Eliad Peller07caf9d2010-10-27 14:58:29 +020026 return mac80211_format_buffer(userbuf, count, ppos, \
27 format_string, sta->field); \
Jiri Bence9f207f2007-05-05 11:46:38 -070028}
Eliad Peller07caf9d2010-10-27 14:58:29 +020029#define STA_READ_D(name, field) STA_READ(name, field, "%d\n")
30#define STA_READ_U(name, field) STA_READ(name, field, "%u\n")
31#define STA_READ_S(name, field) STA_READ(name, field, "%s\n")
Jiri Bence9f207f2007-05-05 11:46:38 -070032
Jiri Bence9f207f2007-05-05 11:46:38 -070033#define STA_OPS(name) \
34static const struct file_operations sta_ ##name## _ops = { \
35 .read = sta_##name##_read, \
36 .open = mac80211_open_file_generic, \
Arnd Bergmann2b18ab362010-07-06 19:05:31 +020037 .llseek = generic_file_llseek, \
Jiri Bence9f207f2007-05-05 11:46:38 -070038}
39
Johannes Berga75b4362010-05-01 18:53:51 +020040#define STA_OPS_RW(name) \
41static const struct file_operations sta_ ##name## _ops = { \
42 .read = sta_##name##_read, \
43 .write = sta_##name##_write, \
44 .open = mac80211_open_file_generic, \
Arnd Bergmann2b18ab362010-07-06 19:05:31 +020045 .llseek = generic_file_llseek, \
Johannes Berga75b4362010-05-01 18:53:51 +020046}
47
Jiri Bence9f207f2007-05-05 11:46:38 -070048#define STA_FILE(name, field, format) \
49 STA_READ_##format(name, field) \
50 STA_OPS(name)
51
Johannes Berg17741cd2008-09-11 00:02:02 +020052STA_FILE(aid, sta.aid, D);
Johannes Berg47846c92009-11-25 17:46:19 +010053STA_FILE(dev, sdata->name, S);
Jiri Bence9f207f2007-05-05 11:46:38 -070054STA_FILE(last_signal, last_signal, D);
Jiri Bence9f207f2007-05-05 11:46:38 -070055
56static ssize_t sta_flags_read(struct file *file, char __user *userbuf,
57 size_t count, loff_t *ppos)
58{
59 char buf[100];
60 struct sta_info *sta = file->private_data;
Johannes Berg07346f812008-05-03 01:02:02 +020061 u32 staflags = get_sta_flags(sta);
Johannes Bergaf818582009-11-06 11:35:50 +010062 int res = scnprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s%s%s",
Johannes Berg07346f812008-05-03 01:02:02 +020063 staflags & WLAN_STA_AUTH ? "AUTH\n" : "",
64 staflags & WLAN_STA_ASSOC ? "ASSOC\n" : "",
Johannes Bergaf818582009-11-06 11:35:50 +010065 staflags & WLAN_STA_PS_STA ? "PS (sta)\n" : "",
66 staflags & WLAN_STA_PS_DRIVER ? "PS (driver)\n" : "",
Johannes Berg07346f812008-05-03 01:02:02 +020067 staflags & WLAN_STA_AUTHORIZED ? "AUTHORIZED\n" : "",
68 staflags & WLAN_STA_SHORT_PREAMBLE ? "SHORT PREAMBLE\n" : "",
69 staflags & WLAN_STA_WME ? "WME\n" : "",
Jouni Malinen5394af42009-01-08 13:31:59 +020070 staflags & WLAN_STA_WDS ? "WDS\n" : "",
71 staflags & WLAN_STA_MFP ? "MFP\n" : "");
Jiri Bence9f207f2007-05-05 11:46:38 -070072 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
73}
74STA_OPS(flags);
75
76static ssize_t sta_num_ps_buf_frames_read(struct file *file,
77 char __user *userbuf,
78 size_t count, loff_t *ppos)
79{
Jiri Bence9f207f2007-05-05 11:46:38 -070080 struct sta_info *sta = file->private_data;
Eliad Peller07caf9d2010-10-27 14:58:29 +020081 return mac80211_format_buffer(userbuf, count, ppos, "%u\n",
82 skb_queue_len(&sta->ps_tx_buf));
Jiri Bence9f207f2007-05-05 11:46:38 -070083}
84STA_OPS(num_ps_buf_frames);
85
Jiri Bence9f207f2007-05-05 11:46:38 -070086static ssize_t sta_inactive_ms_read(struct file *file, char __user *userbuf,
87 size_t count, loff_t *ppos)
88{
Jiri Bence9f207f2007-05-05 11:46:38 -070089 struct sta_info *sta = file->private_data;
Eliad Peller07caf9d2010-10-27 14:58:29 +020090 return mac80211_format_buffer(userbuf, count, ppos, "%d\n",
91 jiffies_to_msecs(jiffies - sta->last_rx));
Jiri Bence9f207f2007-05-05 11:46:38 -070092}
93STA_OPS(inactive_ms);
94
Mohammed Shafi Shajakhanebe27c92011-04-08 21:24:24 +053095
96static ssize_t sta_connected_time_read(struct file *file, char __user *userbuf,
97 size_t count, loff_t *ppos)
98{
99 struct sta_info *sta = file->private_data;
100 struct timespec uptime;
101 struct tm result;
102 long connected_time_secs;
103 char buf[100];
104 int res;
105 do_posix_clock_monotonic_gettime(&uptime);
106 connected_time_secs = uptime.tv_sec - sta->last_connected;
107 time_to_tm(connected_time_secs, 0, &result);
108 result.tm_year -= 70;
109 result.tm_mday -= 1;
110 res = scnprintf(buf, sizeof(buf),
Randy Dunlap7762bb02011-04-15 16:20:05 -0700111 "years - %ld\nmonths - %d\ndays - %d\nclock - %d:%d:%d\n\n",
Mohammed Shafi Shajakhanebe27c92011-04-08 21:24:24 +0530112 result.tm_year, result.tm_mon, result.tm_mday,
113 result.tm_hour, result.tm_min, result.tm_sec);
114 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
115}
116STA_OPS(connected_time);
117
118
119
Jiri Bence9f207f2007-05-05 11:46:38 -0700120static ssize_t sta_last_seq_ctrl_read(struct file *file, char __user *userbuf,
121 size_t count, loff_t *ppos)
122{
123 char buf[15*NUM_RX_DATA_QUEUES], *p = buf;
124 int i;
125 struct sta_info *sta = file->private_data;
126 for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
127 p += scnprintf(p, sizeof(buf)+buf-p, "%x ",
Zhu Yiba9b07d2007-07-27 15:43:23 +0200128 le16_to_cpu(sta->last_seq_ctrl[i]));
Jiri Bence9f207f2007-05-05 11:46:38 -0700129 p += scnprintf(p, sizeof(buf)+buf-p, "\n");
130 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
131}
132STA_OPS(last_seq_ctrl);
133
Ron Rindjunskyeb2ba622008-01-28 14:07:20 +0200134static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf,
135 size_t count, loff_t *ppos)
136{
Johannes Berg098a6072010-04-06 11:18:47 +0200137 char buf[71 + STA_TID_NUM * 40], *p = buf;
Ron Rindjunskyeb2ba622008-01-28 14:07:20 +0200138 int i;
139 struct sta_info *sta = file->private_data;
Johannes Bergdd318572010-11-29 11:09:16 +0100140 struct tid_ampdu_rx *tid_rx;
141 struct tid_ampdu_tx *tid_tx;
Ron Rindjunskyeb2ba622008-01-28 14:07:20 +0200142
Johannes Bergdd318572010-11-29 11:09:16 +0100143 rcu_read_lock();
144
Pavel Roskine0b20f12010-01-30 19:55:27 -0500145 p += scnprintf(p, sizeof(buf) + buf - p, "next dialog_token: %#02x\n",
Johannes Berg386aa232009-06-17 17:28:45 +0200146 sta->ampdu_mlme.dialog_token_allocator + 1);
Pavel Roskine0b20f12010-01-30 19:55:27 -0500147 p += scnprintf(p, sizeof(buf) + buf - p,
Johannes Berg0ab33702010-06-10 10:21:42 +0200148 "TID\t\tRX active\tDTKN\tSSN\t\tTX\tDTKN\tpending\n");
Ron Rindjunskyeb2ba622008-01-28 14:07:20 +0200149
Johannes Bergdd318572010-11-29 11:09:16 +0100150 for (i = 0; i < STA_TID_NUM; i++) {
151 tid_rx = rcu_dereference(sta->ampdu_mlme.tid_rx[i]);
152 tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[i]);
153
154 p += scnprintf(p, sizeof(buf) + buf - p, "%02d", i);
155 p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_rx);
Pavel Roskine0b20f12010-01-30 19:55:27 -0500156 p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
Johannes Bergdd318572010-11-29 11:09:16 +0100157 tid_rx ? tid_rx->dialog_token : 0);
158 p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x",
159 tid_rx ? tid_rx->ssn : 0);
160
161 p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_tx);
162 p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
163 tid_tx ? tid_tx->dialog_token : 0);
Pavel Roskine0b20f12010-01-30 19:55:27 -0500164 p += scnprintf(p, sizeof(buf) + buf - p, "\t%03d",
Johannes Bergdd318572010-11-29 11:09:16 +0100165 tid_tx ? skb_queue_len(&tid_tx->pending) : 0);
Pavel Roskine0b20f12010-01-30 19:55:27 -0500166 p += scnprintf(p, sizeof(buf) + buf - p, "\n");
Johannes Berg386aa232009-06-17 17:28:45 +0200167 }
Johannes Bergdd318572010-11-29 11:09:16 +0100168 rcu_read_unlock();
Ron Rindjunskyeb2ba622008-01-28 14:07:20 +0200169
170 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
171}
Johannes Berga75b4362010-05-01 18:53:51 +0200172
173static ssize_t sta_agg_status_write(struct file *file, const char __user *userbuf,
174 size_t count, loff_t *ppos)
175{
176 char _buf[12], *buf = _buf;
177 struct sta_info *sta = file->private_data;
178 bool start, tx;
179 unsigned long tid;
180 int ret;
181
182 if (count > sizeof(_buf))
183 return -EINVAL;
184
185 if (copy_from_user(buf, userbuf, count))
186 return -EFAULT;
187
188 buf[sizeof(_buf) - 1] = '\0';
189
190 if (strncmp(buf, "tx ", 3) == 0) {
191 buf += 3;
192 tx = true;
193 } else if (strncmp(buf, "rx ", 3) == 0) {
194 buf += 3;
195 tx = false;
196 } else
197 return -EINVAL;
198
199 if (strncmp(buf, "start ", 6) == 0) {
200 buf += 6;
201 start = true;
202 if (!tx)
203 return -EINVAL;
204 } else if (strncmp(buf, "stop ", 5) == 0) {
205 buf += 5;
206 start = false;
207 } else
208 return -EINVAL;
209
210 tid = simple_strtoul(buf, NULL, 0);
211
212 if (tid >= STA_TID_NUM)
213 return -EINVAL;
214
215 if (tx) {
216 if (start)
Sujith Manoharanbd2ce6e2010-12-15 07:47:10 +0530217 ret = ieee80211_start_tx_ba_session(&sta->sta, tid, 5000);
Johannes Berga75b4362010-05-01 18:53:51 +0200218 else
Johannes Berg6a8579d2010-05-27 14:41:07 +0200219 ret = ieee80211_stop_tx_ba_session(&sta->sta, tid);
Johannes Berga75b4362010-05-01 18:53:51 +0200220 } else {
Johannes Berg53f73c02010-10-05 19:37:40 +0200221 __ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT,
222 3, true);
Johannes Berga75b4362010-05-01 18:53:51 +0200223 ret = 0;
224 }
225
226 return ret ?: count;
227}
228STA_OPS_RW(agg_status);
Ron Rindjunskyeb2ba622008-01-28 14:07:20 +0200229
Johannes Berg64491f02009-11-19 14:26:11 +0100230static ssize_t sta_ht_capa_read(struct file *file, char __user *userbuf,
231 size_t count, loff_t *ppos)
232{
Luis R. Rodriguez7db94e22009-12-07 14:54:45 -0500233#define PRINT_HT_CAP(_cond, _str) \
234 do { \
235 if (_cond) \
236 p += scnprintf(p, sizeof(buf)+buf-p, "\t" _str "\n"); \
237 } while (0)
Pavel Roskin4c82bf82010-01-30 19:55:09 -0500238 char buf[512], *p = buf;
Johannes Berg64491f02009-11-19 14:26:11 +0100239 int i;
240 struct sta_info *sta = file->private_data;
241 struct ieee80211_sta_ht_cap *htc = &sta->sta.ht_cap;
242
243 p += scnprintf(p, sizeof(buf) + buf - p, "ht %ssupported\n",
244 htc->ht_supported ? "" : "not ");
245 if (htc->ht_supported) {
Luis R. Rodriguezcb136f52009-12-07 14:01:28 -0500246 p += scnprintf(p, sizeof(buf)+buf-p, "cap: %#.4x\n", htc->cap);
Luis R. Rodriguez7db94e22009-12-07 14:54:45 -0500247
Luis R. Rodriguezc15cf5f2010-04-08 16:08:46 -0400248 PRINT_HT_CAP((htc->cap & BIT(0)), "RX LDPC");
Luis R. Rodriguez7db94e22009-12-07 14:54:45 -0500249 PRINT_HT_CAP((htc->cap & BIT(1)), "HT20/HT40");
250 PRINT_HT_CAP(!(htc->cap & BIT(1)), "HT20");
251
252 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 0, "Static SM Power Save");
253 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 1, "Dynamic SM Power Save");
254 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 3, "SM Power Save disabled");
255
256 PRINT_HT_CAP((htc->cap & BIT(4)), "RX Greenfield");
257 PRINT_HT_CAP((htc->cap & BIT(5)), "RX HT20 SGI");
258 PRINT_HT_CAP((htc->cap & BIT(6)), "RX HT40 SGI");
259 PRINT_HT_CAP((htc->cap & BIT(7)), "TX STBC");
260
261 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 0, "No RX STBC");
262 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 1, "RX STBC 1-stream");
263 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 2, "RX STBC 2-streams");
264 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 3, "RX STBC 3-streams");
265
266 PRINT_HT_CAP((htc->cap & BIT(10)), "HT Delayed Block Ack");
267
268 PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: "
269 "3839 bytes");
270 PRINT_HT_CAP(!(htc->cap & BIT(11)), "Max AMSDU length: "
271 "7935 bytes");
272
273 /*
274 * For beacons and probe response this would mean the BSS
275 * does or does not allow the usage of DSSS/CCK HT40.
276 * Otherwise it means the STA does or does not use
277 * DSSS/CCK HT40.
278 */
279 PRINT_HT_CAP((htc->cap & BIT(12)), "DSSS/CCK HT40");
280 PRINT_HT_CAP(!(htc->cap & BIT(12)), "No DSSS/CCK HT40");
281
282 /* BIT(13) is reserved */
283
284 PRINT_HT_CAP((htc->cap & BIT(14)), "40 MHz Intolerant");
285
286 PRINT_HT_CAP((htc->cap & BIT(15)), "L-SIG TXOP protection");
287
Johannes Berg64491f02009-11-19 14:26:11 +0100288 p += scnprintf(p, sizeof(buf)+buf-p, "ampdu factor/density: %d/%d\n",
289 htc->ampdu_factor, htc->ampdu_density);
290 p += scnprintf(p, sizeof(buf)+buf-p, "MCS mask:");
Luis R. Rodriguez9da3e062009-12-07 15:57:50 -0500291
Johannes Berg64491f02009-11-19 14:26:11 +0100292 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
293 p += scnprintf(p, sizeof(buf)+buf-p, " %.2x",
294 htc->mcs.rx_mask[i]);
Luis R. Rodriguez9da3e062009-12-07 15:57:50 -0500295 p += scnprintf(p, sizeof(buf)+buf-p, "\n");
296
297 /* If not set this is meaningless */
298 if (le16_to_cpu(htc->mcs.rx_highest)) {
299 p += scnprintf(p, sizeof(buf)+buf-p,
300 "MCS rx highest: %d Mbps\n",
301 le16_to_cpu(htc->mcs.rx_highest));
302 }
303
Johannes Berg64491f02009-11-19 14:26:11 +0100304 p += scnprintf(p, sizeof(buf)+buf-p, "MCS tx params: %x\n",
305 htc->mcs.tx_params);
306 }
307
308 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
309}
310STA_OPS(ht_capa);
311
Jiri Bence9f207f2007-05-05 11:46:38 -0700312#define DEBUGFS_ADD(name) \
Johannes Berg7bcfaf22009-10-27 12:59:03 +0100313 debugfs_create_file(#name, 0400, \
Jiri Bence9f207f2007-05-05 11:46:38 -0700314 sta->debugfs.dir, sta, &sta_ ##name## _ops);
315
Felix Fietkau2826bcd2010-06-02 02:57:34 +0200316#define DEBUGFS_ADD_COUNTER(name, field) \
317 if (sizeof(sta->field) == sizeof(u32)) \
318 debugfs_create_u32(#name, 0400, sta->debugfs.dir, \
319 (u32 *) &sta->field); \
320 else \
321 debugfs_create_u64(#name, 0400, sta->debugfs.dir, \
322 (u64 *) &sta->field);
Jiri Bence9f207f2007-05-05 11:46:38 -0700323
324void ieee80211_sta_debugfs_add(struct sta_info *sta)
325{
Ben Greear295bafb2010-09-22 20:29:01 -0700326 struct dentry *stations_dir = sta->sdata->debugfs.subdir_stations;
Johannes Berg0c68ae262008-10-27 15:56:10 -0700327 u8 mac[3*ETH_ALEN];
Jiri Bence9f207f2007-05-05 11:46:38 -0700328
Johannes Berg63044e92008-10-07 12:04:29 +0200329 sta->debugfs.add_has_run = true;
330
Jiri Bence9f207f2007-05-05 11:46:38 -0700331 if (!stations_dir)
332 return;
333
Johannes Berg0c68ae262008-10-27 15:56:10 -0700334 snprintf(mac, sizeof(mac), "%pM", sta->sta.addr);
Jiri Bence9f207f2007-05-05 11:46:38 -0700335
Johannes Berg63044e92008-10-07 12:04:29 +0200336 /*
337 * This might fail due to a race condition:
338 * When mac80211 unlinks a station, the debugfs entries
339 * remain, but it is already possible to link a new
340 * station with the same address which triggers adding
341 * it to debugfs; therefore, if the old station isn't
342 * destroyed quickly enough the old station's debugfs
343 * dir might still be around.
344 */
Joe Perches0795af52007-10-03 17:59:30 -0700345 sta->debugfs.dir = debugfs_create_dir(mac, stations_dir);
Jiri Bence9f207f2007-05-05 11:46:38 -0700346 if (!sta->debugfs.dir)
347 return;
348
349 DEBUGFS_ADD(flags);
350 DEBUGFS_ADD(num_ps_buf_frames);
Jiri Bence9f207f2007-05-05 11:46:38 -0700351 DEBUGFS_ADD(inactive_ms);
Mohammed Shafi Shajakhanebe27c92011-04-08 21:24:24 +0530352 DEBUGFS_ADD(connected_time);
Jiri Bence9f207f2007-05-05 11:46:38 -0700353 DEBUGFS_ADD(last_seq_ctrl);
Ron Rindjunskyeb2ba622008-01-28 14:07:20 +0200354 DEBUGFS_ADD(agg_status);
Johannes Berg386aa232009-06-17 17:28:45 +0200355 DEBUGFS_ADD(dev);
Johannes Berg386aa232009-06-17 17:28:45 +0200356 DEBUGFS_ADD(last_signal);
Johannes Berg64491f02009-11-19 14:26:11 +0100357 DEBUGFS_ADD(ht_capa);
Felix Fietkau2826bcd2010-06-02 02:57:34 +0200358
359 DEBUGFS_ADD_COUNTER(rx_packets, rx_packets);
360 DEBUGFS_ADD_COUNTER(tx_packets, tx_packets);
361 DEBUGFS_ADD_COUNTER(rx_bytes, rx_bytes);
362 DEBUGFS_ADD_COUNTER(tx_bytes, tx_bytes);
363 DEBUGFS_ADD_COUNTER(rx_duplicates, num_duplicates);
364 DEBUGFS_ADD_COUNTER(rx_fragments, rx_fragments);
365 DEBUGFS_ADD_COUNTER(rx_dropped, rx_dropped);
366 DEBUGFS_ADD_COUNTER(tx_fragments, tx_fragments);
367 DEBUGFS_ADD_COUNTER(tx_filtered, tx_filtered_count);
368 DEBUGFS_ADD_COUNTER(tx_retry_failed, tx_retry_failed);
369 DEBUGFS_ADD_COUNTER(tx_retry_count, tx_retry_count);
370 DEBUGFS_ADD_COUNTER(wep_weak_iv_count, wep_weak_iv_count);
Jiri Bence9f207f2007-05-05 11:46:38 -0700371}
372
373void ieee80211_sta_debugfs_remove(struct sta_info *sta)
374{
Johannes Berg7bcfaf22009-10-27 12:59:03 +0100375 debugfs_remove_recursive(sta->debugfs.dir);
Jiri Bence9f207f2007-05-05 11:46:38 -0700376 sta->debugfs.dir = NULL;
377}