2 * Copyright 2003-2005 Devicescape Software, Inc.
3 * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
4 * Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
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.
11 #include <linux/debugfs.h>
12 #include <linux/ieee80211.h>
13 #include "ieee80211_i.h"
15 #include "debugfs_sta.h"
20 #define STA_READ(name, field, format_string) \
21 static ssize_t sta_ ##name## _read(struct file *file, \
22 char __user *userbuf, \
23 size_t count, loff_t *ppos) \
25 struct sta_info *sta = file->private_data; \
26 return mac80211_format_buffer(userbuf, count, ppos, \
27 format_string, sta->field); \
29 #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")
33 #define STA_OPS(name) \
34 static const struct file_operations sta_ ##name## _ops = { \
35 .read = sta_##name##_read, \
36 .open = simple_open, \
37 .llseek = generic_file_llseek, \
40 #define STA_OPS_RW(name) \
41 static const struct file_operations sta_ ##name## _ops = { \
42 .read = sta_##name##_read, \
43 .write = sta_##name##_write, \
44 .open = simple_open, \
45 .llseek = generic_file_llseek, \
48 #define STA_FILE(name, field, format) \
49 STA_READ_##format(name, field) \
52 STA_FILE(aid, sta.aid, D);
53 STA_FILE(dev, sdata->name, S);
54 STA_FILE(last_signal, last_signal, D);
56 static ssize_t sta_flags_read(struct file *file, char __user *userbuf,
57 size_t count, loff_t *ppos)
60 struct sta_info *sta = file->private_data;
63 test_sta_flag(sta, WLAN_STA_##flg) ? #flg "\n" : ""
65 int res = scnprintf(buf, sizeof(buf),
66 "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
67 TEST(AUTH), TEST(ASSOC), TEST(PS_STA),
68 TEST(PS_DRIVER), TEST(AUTHORIZED),
70 TEST(WME), TEST(WDS), TEST(CLEAR_PS_FILT),
71 TEST(MFP), TEST(BLOCK_BA), TEST(PSPOLL),
72 TEST(UAPSD), TEST(SP), TEST(TDLS_PEER),
73 TEST(TDLS_PEER_AUTH), TEST(4ADDR_EVENT),
74 TEST(INSERTED), TEST(RATE_CONTROL));
76 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
80 static ssize_t sta_num_ps_buf_frames_read(struct file *file,
82 size_t count, loff_t *ppos)
84 struct sta_info *sta = file->private_data;
85 char buf[17*IEEE80211_NUM_ACS], *p = buf;
88 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
89 p += scnprintf(p, sizeof(buf)+buf-p, "AC%d: %d\n", ac,
90 skb_queue_len(&sta->ps_tx_buf[ac]) +
91 skb_queue_len(&sta->tx_filtered[ac]));
92 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
94 STA_OPS(num_ps_buf_frames);
96 static ssize_t sta_inactive_ms_read(struct file *file, char __user *userbuf,
97 size_t count, loff_t *ppos)
99 struct sta_info *sta = file->private_data;
100 return mac80211_format_buffer(userbuf, count, ppos, "%d\n",
101 jiffies_to_msecs(jiffies - sta->last_rx));
103 STA_OPS(inactive_ms);
106 static ssize_t sta_connected_time_read(struct file *file, char __user *userbuf,
107 size_t count, loff_t *ppos)
109 struct sta_info *sta = file->private_data;
110 struct timespec uptime;
112 long connected_time_secs;
115 do_posix_clock_monotonic_gettime(&uptime);
116 connected_time_secs = uptime.tv_sec - sta->last_connected;
117 time_to_tm(connected_time_secs, 0, &result);
118 result.tm_year -= 70;
120 res = scnprintf(buf, sizeof(buf),
121 "years - %ld\nmonths - %d\ndays - %d\nclock - %d:%d:%d\n\n",
122 result.tm_year, result.tm_mon, result.tm_mday,
123 result.tm_hour, result.tm_min, result.tm_sec);
124 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
126 STA_OPS(connected_time);
130 static ssize_t sta_last_seq_ctrl_read(struct file *file, char __user *userbuf,
131 size_t count, loff_t *ppos)
133 char buf[15*NUM_RX_DATA_QUEUES], *p = buf;
135 struct sta_info *sta = file->private_data;
136 for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
137 p += scnprintf(p, sizeof(buf)+buf-p, "%x ",
138 le16_to_cpu(sta->last_seq_ctrl[i]));
139 p += scnprintf(p, sizeof(buf)+buf-p, "\n");
140 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
142 STA_OPS(last_seq_ctrl);
144 static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf,
145 size_t count, loff_t *ppos)
147 char buf[71 + STA_TID_NUM * 40], *p = buf;
149 struct sta_info *sta = file->private_data;
150 struct tid_ampdu_rx *tid_rx;
151 struct tid_ampdu_tx *tid_tx;
155 p += scnprintf(p, sizeof(buf) + buf - p, "next dialog_token: %#02x\n",
156 sta->ampdu_mlme.dialog_token_allocator + 1);
157 p += scnprintf(p, sizeof(buf) + buf - p,
158 "TID\t\tRX active\tDTKN\tSSN\t\tTX\tDTKN\tpending\n");
160 for (i = 0; i < STA_TID_NUM; i++) {
161 tid_rx = rcu_dereference(sta->ampdu_mlme.tid_rx[i]);
162 tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[i]);
164 p += scnprintf(p, sizeof(buf) + buf - p, "%02d", i);
165 p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_rx);
166 p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
167 tid_rx ? tid_rx->dialog_token : 0);
168 p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x",
169 tid_rx ? tid_rx->ssn : 0);
171 p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_tx);
172 p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
173 tid_tx ? tid_tx->dialog_token : 0);
174 p += scnprintf(p, sizeof(buf) + buf - p, "\t%03d",
175 tid_tx ? skb_queue_len(&tid_tx->pending) : 0);
176 p += scnprintf(p, sizeof(buf) + buf - p, "\n");
180 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
183 static ssize_t sta_agg_status_write(struct file *file, const char __user *userbuf,
184 size_t count, loff_t *ppos)
186 char _buf[12], *buf = _buf;
187 struct sta_info *sta = file->private_data;
192 if (count > sizeof(_buf))
195 if (copy_from_user(buf, userbuf, count))
198 buf[sizeof(_buf) - 1] = '\0';
200 if (strncmp(buf, "tx ", 3) == 0) {
203 } else if (strncmp(buf, "rx ", 3) == 0) {
209 if (strncmp(buf, "start ", 6) == 0) {
214 } else if (strncmp(buf, "stop ", 5) == 0) {
220 tid = simple_strtoul(buf, NULL, 0);
222 if (tid >= STA_TID_NUM)
227 ret = ieee80211_start_tx_ba_session(&sta->sta, tid, 5000);
229 ret = ieee80211_stop_tx_ba_session(&sta->sta, tid);
231 __ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT,
238 STA_OPS_RW(agg_status);
240 static ssize_t sta_ht_capa_read(struct file *file, char __user *userbuf,
241 size_t count, loff_t *ppos)
243 #define PRINT_HT_CAP(_cond, _str) \
246 p += scnprintf(p, sizeof(buf)+buf-p, "\t" _str "\n"); \
248 char buf[512], *p = buf;
250 struct sta_info *sta = file->private_data;
251 struct ieee80211_sta_ht_cap *htc = &sta->sta.ht_cap;
253 p += scnprintf(p, sizeof(buf) + buf - p, "ht %ssupported\n",
254 htc->ht_supported ? "" : "not ");
255 if (htc->ht_supported) {
256 p += scnprintf(p, sizeof(buf)+buf-p, "cap: %#.4x\n", htc->cap);
258 PRINT_HT_CAP((htc->cap & BIT(0)), "RX LDPC");
259 PRINT_HT_CAP((htc->cap & BIT(1)), "HT20/HT40");
260 PRINT_HT_CAP(!(htc->cap & BIT(1)), "HT20");
262 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 0, "Static SM Power Save");
263 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 1, "Dynamic SM Power Save");
264 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 3, "SM Power Save disabled");
266 PRINT_HT_CAP((htc->cap & BIT(4)), "RX Greenfield");
267 PRINT_HT_CAP((htc->cap & BIT(5)), "RX HT20 SGI");
268 PRINT_HT_CAP((htc->cap & BIT(6)), "RX HT40 SGI");
269 PRINT_HT_CAP((htc->cap & BIT(7)), "TX STBC");
271 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 0, "No RX STBC");
272 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 1, "RX STBC 1-stream");
273 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 2, "RX STBC 2-streams");
274 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 3, "RX STBC 3-streams");
276 PRINT_HT_CAP((htc->cap & BIT(10)), "HT Delayed Block Ack");
278 PRINT_HT_CAP(!(htc->cap & BIT(11)), "Max AMSDU length: "
280 PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: "
284 * For beacons and probe response this would mean the BSS
285 * does or does not allow the usage of DSSS/CCK HT40.
286 * Otherwise it means the STA does or does not use
289 PRINT_HT_CAP((htc->cap & BIT(12)), "DSSS/CCK HT40");
290 PRINT_HT_CAP(!(htc->cap & BIT(12)), "No DSSS/CCK HT40");
292 /* BIT(13) is reserved */
294 PRINT_HT_CAP((htc->cap & BIT(14)), "40 MHz Intolerant");
296 PRINT_HT_CAP((htc->cap & BIT(15)), "L-SIG TXOP protection");
298 p += scnprintf(p, sizeof(buf)+buf-p, "ampdu factor/density: %d/%d\n",
299 htc->ampdu_factor, htc->ampdu_density);
300 p += scnprintf(p, sizeof(buf)+buf-p, "MCS mask:");
302 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
303 p += scnprintf(p, sizeof(buf)+buf-p, " %.2x",
304 htc->mcs.rx_mask[i]);
305 p += scnprintf(p, sizeof(buf)+buf-p, "\n");
307 /* If not set this is meaningless */
308 if (le16_to_cpu(htc->mcs.rx_highest)) {
309 p += scnprintf(p, sizeof(buf)+buf-p,
310 "MCS rx highest: %d Mbps\n",
311 le16_to_cpu(htc->mcs.rx_highest));
314 p += scnprintf(p, sizeof(buf)+buf-p, "MCS tx params: %x\n",
318 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
322 #define DEBUGFS_ADD(name) \
323 debugfs_create_file(#name, 0400, \
324 sta->debugfs.dir, sta, &sta_ ##name## _ops);
326 #define DEBUGFS_ADD_COUNTER(name, field) \
327 if (sizeof(sta->field) == sizeof(u32)) \
328 debugfs_create_u32(#name, 0400, sta->debugfs.dir, \
329 (u32 *) &sta->field); \
331 debugfs_create_u64(#name, 0400, sta->debugfs.dir, \
332 (u64 *) &sta->field);
334 void ieee80211_sta_debugfs_add(struct sta_info *sta)
336 struct dentry *stations_dir = sta->sdata->debugfs.subdir_stations;
339 sta->debugfs.add_has_run = true;
344 snprintf(mac, sizeof(mac), "%pM", sta->sta.addr);
347 * This might fail due to a race condition:
348 * When mac80211 unlinks a station, the debugfs entries
349 * remain, but it is already possible to link a new
350 * station with the same address which triggers adding
351 * it to debugfs; therefore, if the old station isn't
352 * destroyed quickly enough the old station's debugfs
353 * dir might still be around.
355 sta->debugfs.dir = debugfs_create_dir(mac, stations_dir);
356 if (!sta->debugfs.dir)
360 DEBUGFS_ADD(num_ps_buf_frames);
361 DEBUGFS_ADD(inactive_ms);
362 DEBUGFS_ADD(connected_time);
363 DEBUGFS_ADD(last_seq_ctrl);
364 DEBUGFS_ADD(agg_status);
366 DEBUGFS_ADD(last_signal);
367 DEBUGFS_ADD(ht_capa);
369 DEBUGFS_ADD_COUNTER(rx_packets, rx_packets);
370 DEBUGFS_ADD_COUNTER(tx_packets, tx_packets);
371 DEBUGFS_ADD_COUNTER(rx_bytes, rx_bytes);
372 DEBUGFS_ADD_COUNTER(tx_bytes, tx_bytes);
373 DEBUGFS_ADD_COUNTER(rx_duplicates, num_duplicates);
374 DEBUGFS_ADD_COUNTER(rx_fragments, rx_fragments);
375 DEBUGFS_ADD_COUNTER(rx_dropped, rx_dropped);
376 DEBUGFS_ADD_COUNTER(tx_fragments, tx_fragments);
377 DEBUGFS_ADD_COUNTER(tx_filtered, tx_filtered_count);
378 DEBUGFS_ADD_COUNTER(tx_retry_failed, tx_retry_failed);
379 DEBUGFS_ADD_COUNTER(tx_retry_count, tx_retry_count);
380 DEBUGFS_ADD_COUNTER(wep_weak_iv_count, wep_weak_iv_count);
383 void ieee80211_sta_debugfs_remove(struct sta_info *sta)
385 debugfs_remove_recursive(sta->debugfs.dir);
386 sta->debugfs.dir = NULL;