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atl1c: Disable L0S when no cable link
[linux-2.6/cjktty.git] / net / mac80211 / debugfs_sta.c
blob5ccec2c1e9f669165763372176e62fbc2562d049
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
18 /* sta attributtes */
19
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) \
24 { \
25 struct sta_info *sta = file->private_data; \
26 return mac80211_format_buffer(userbuf, count, ppos, \
27 format_string, sta->field); \
28 }
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")
32
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, \
38 }
39
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, \
46 }
47
48 #define STA_FILE(name, field, format) \
49 STA_READ_##format(name, field) \
50 STA_OPS(name)
51
52 STA_FILE(aid, sta.aid, D);
53 STA_FILE(dev, sdata->name, S);
54 STA_FILE(last_signal, last_signal, D);
55
56 static ssize_t sta_flags_read(struct file *file, char __user *userbuf,
57 size_t count, loff_t *ppos)
58 {
59 char buf[121];
60 struct sta_info *sta = file->private_data;
61
62 #define TEST(flg) \
63 test_sta_flag(sta, WLAN_STA_##flg) ? #flg "\n" : ""
64
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%s",
67 TEST(AUTH), TEST(ASSOC), TEST(PS_STA),
68 TEST(PS_DRIVER), TEST(AUTHORIZED),
69 TEST(SHORT_PREAMBLE),
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),
75 TEST(TOFFSET_KNOWN));
76 #undef TEST
77 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
78 }
79 STA_OPS(flags);
80
81 static ssize_t sta_num_ps_buf_frames_read(struct file *file,
82 char __user *userbuf,
83 size_t count, loff_t *ppos)
84 {
85 struct sta_info *sta = file->private_data;
86 char buf[17*IEEE80211_NUM_ACS], *p = buf;
87 int ac;
88
89 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
90 p += scnprintf(p, sizeof(buf)+buf-p, "AC%d: %d\n", ac,
91 skb_queue_len(&sta->ps_tx_buf[ac]) +
92 skb_queue_len(&sta->tx_filtered[ac]));
93 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
94 }
95 STA_OPS(num_ps_buf_frames);
96
97 static ssize_t sta_inactive_ms_read(struct file *file, char __user *userbuf,
98 size_t count, loff_t *ppos)
99 {
100 struct sta_info *sta = file->private_data;
101 return mac80211_format_buffer(userbuf, count, ppos, "%d\n",
102 jiffies_to_msecs(jiffies - sta->last_rx));
103 }
104 STA_OPS(inactive_ms);
105
106
107 static ssize_t sta_connected_time_read(struct file *file, char __user *userbuf,
108 size_t count, loff_t *ppos)
109 {
110 struct sta_info *sta = file->private_data;
111 struct timespec uptime;
112 struct tm result;
113 long connected_time_secs;
114 char buf[100];
115 int res;
116 do_posix_clock_monotonic_gettime(&uptime);
117 connected_time_secs = uptime.tv_sec - sta->last_connected;
118 time_to_tm(connected_time_secs, 0, &result);
119 result.tm_year -= 70;
120 result.tm_mday -= 1;
121 res = scnprintf(buf, sizeof(buf),
122 "years - %ld\nmonths - %d\ndays - %d\nclock - %d:%d:%d\n\n",
123 result.tm_year, result.tm_mon, result.tm_mday,
124 result.tm_hour, result.tm_min, result.tm_sec);
125 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
126 }
127 STA_OPS(connected_time);
128
129
130
131 static ssize_t sta_last_seq_ctrl_read(struct file *file, char __user *userbuf,
132 size_t count, loff_t *ppos)
133 {
134 char buf[15*NUM_RX_DATA_QUEUES], *p = buf;
135 int i;
136 struct sta_info *sta = file->private_data;
137 for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
138 p += scnprintf(p, sizeof(buf)+buf-p, "%x ",
139 le16_to_cpu(sta->last_seq_ctrl[i]));
140 p += scnprintf(p, sizeof(buf)+buf-p, "\n");
141 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
142 }
143 STA_OPS(last_seq_ctrl);
144
145 static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf,
146 size_t count, loff_t *ppos)
147 {
148 char buf[71 + STA_TID_NUM * 40], *p = buf;
149 int i;
150 struct sta_info *sta = file->private_data;
151 struct tid_ampdu_rx *tid_rx;
152 struct tid_ampdu_tx *tid_tx;
153
154 rcu_read_lock();
155
156 p += scnprintf(p, sizeof(buf) + buf - p, "next dialog_token: %#02x\n",
157 sta->ampdu_mlme.dialog_token_allocator + 1);
158 p += scnprintf(p, sizeof(buf) + buf - p,
159 "TID\t\tRX active\tDTKN\tSSN\t\tTX\tDTKN\tpending\n");
160
161 for (i = 0; i < STA_TID_NUM; i++) {
162 tid_rx = rcu_dereference(sta->ampdu_mlme.tid_rx[i]);
163 tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[i]);
164
165 p += scnprintf(p, sizeof(buf) + buf - p, "%02d", i);
166 p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_rx);
167 p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
168 tid_rx ? tid_rx->dialog_token : 0);
169 p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x",
170 tid_rx ? tid_rx->ssn : 0);
171
172 p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_tx);
173 p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
174 tid_tx ? tid_tx->dialog_token : 0);
175 p += scnprintf(p, sizeof(buf) + buf - p, "\t%03d",
176 tid_tx ? skb_queue_len(&tid_tx->pending) : 0);
177 p += scnprintf(p, sizeof(buf) + buf - p, "\n");
178 }
179 rcu_read_unlock();
180
181 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
182 }
183
184 static ssize_t sta_agg_status_write(struct file *file, const char __user *userbuf,
185 size_t count, loff_t *ppos)
186 {
187 char _buf[12], *buf = _buf;
188 struct sta_info *sta = file->private_data;
189 bool start, tx;
190 unsigned long tid;
191 int ret;
192
193 if (count > sizeof(_buf))
194 return -EINVAL;
195
196 if (copy_from_user(buf, userbuf, count))
197 return -EFAULT;
198
199 buf[sizeof(_buf) - 1] = '\0';
200
201 if (strncmp(buf, "tx ", 3) == 0) {
202 buf += 3;
203 tx = true;
204 } else if (strncmp(buf, "rx ", 3) == 0) {
205 buf += 3;
206 tx = false;
207 } else
208 return -EINVAL;
209
210 if (strncmp(buf, "start ", 6) == 0) {
211 buf += 6;
212 start = true;
213 if (!tx)
214 return -EINVAL;
215 } else if (strncmp(buf, "stop ", 5) == 0) {
216 buf += 5;
217 start = false;
218 } else
219 return -EINVAL;
220
221 tid = simple_strtoul(buf, NULL, 0);
222
223 if (tid >= STA_TID_NUM)
224 return -EINVAL;
225
226 if (tx) {
227 if (start)
228 ret = ieee80211_start_tx_ba_session(&sta->sta, tid, 5000);
229 else
230 ret = ieee80211_stop_tx_ba_session(&sta->sta, tid);
231 } else {
232 __ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT,
233 3, true);
234 ret = 0;
235 }
236
237 return ret ?: count;
238 }
239 STA_OPS_RW(agg_status);
240
241 static ssize_t sta_ht_capa_read(struct file *file, char __user *userbuf,
242 size_t count, loff_t *ppos)
243 {
244 #define PRINT_HT_CAP(_cond, _str) \
245 do { \
246 if (_cond) \
247 p += scnprintf(p, sizeof(buf)+buf-p, "\t" _str "\n"); \
248 } while (0)
249 char buf[512], *p = buf;
250 int i;
251 struct sta_info *sta = file->private_data;
252 struct ieee80211_sta_ht_cap *htc = &sta->sta.ht_cap;
253
254 p += scnprintf(p, sizeof(buf) + buf - p, "ht %ssupported\n",
255 htc->ht_supported ? "" : "not ");
256 if (htc->ht_supported) {
257 p += scnprintf(p, sizeof(buf)+buf-p, "cap: %#.4x\n", htc->cap);
258
259 PRINT_HT_CAP((htc->cap & BIT(0)), "RX LDPC");
260 PRINT_HT_CAP((htc->cap & BIT(1)), "HT20/HT40");
261 PRINT_HT_CAP(!(htc->cap & BIT(1)), "HT20");
262
263 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 0, "Static SM Power Save");
264 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 1, "Dynamic SM Power Save");
265 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 3, "SM Power Save disabled");
266
267 PRINT_HT_CAP((htc->cap & BIT(4)), "RX Greenfield");
268 PRINT_HT_CAP((htc->cap & BIT(5)), "RX HT20 SGI");
269 PRINT_HT_CAP((htc->cap & BIT(6)), "RX HT40 SGI");
270 PRINT_HT_CAP((htc->cap & BIT(7)), "TX STBC");
271
272 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 0, "No RX STBC");
273 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 1, "RX STBC 1-stream");
274 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 2, "RX STBC 2-streams");
275 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 3, "RX STBC 3-streams");
276
277 PRINT_HT_CAP((htc->cap & BIT(10)), "HT Delayed Block Ack");
278
279 PRINT_HT_CAP(!(htc->cap & BIT(11)), "Max AMSDU length: "
280 "3839 bytes");
281 PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: "
282 "7935 bytes");
283
284 /*
285 * For beacons and probe response this would mean the BSS
286 * does or does not allow the usage of DSSS/CCK HT40.
287 * Otherwise it means the STA does or does not use
288 * DSSS/CCK HT40.
289 */
290 PRINT_HT_CAP((htc->cap & BIT(12)), "DSSS/CCK HT40");
291 PRINT_HT_CAP(!(htc->cap & BIT(12)), "No DSSS/CCK HT40");
292
293 /* BIT(13) is reserved */
294
295 PRINT_HT_CAP((htc->cap & BIT(14)), "40 MHz Intolerant");
296
297 PRINT_HT_CAP((htc->cap & BIT(15)), "L-SIG TXOP protection");
298
299 p += scnprintf(p, sizeof(buf)+buf-p, "ampdu factor/density: %d/%d\n",
300 htc->ampdu_factor, htc->ampdu_density);
301 p += scnprintf(p, sizeof(buf)+buf-p, "MCS mask:");
302
303 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
304 p += scnprintf(p, sizeof(buf)+buf-p, " %.2x",
305 htc->mcs.rx_mask[i]);
306 p += scnprintf(p, sizeof(buf)+buf-p, "\n");
307
308 /* If not set this is meaningless */
309 if (le16_to_cpu(htc->mcs.rx_highest)) {
310 p += scnprintf(p, sizeof(buf)+buf-p,
311 "MCS rx highest: %d Mbps\n",
312 le16_to_cpu(htc->mcs.rx_highest));
313 }
314
315 p += scnprintf(p, sizeof(buf)+buf-p, "MCS tx params: %x\n",
316 htc->mcs.tx_params);
317 }
318
319 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
320 }
321 STA_OPS(ht_capa);
322
323 #define DEBUGFS_ADD(name) \
324 debugfs_create_file(#name, 0400, \
325 sta->debugfs.dir, sta, &sta_ ##name## _ops);
326
327 #define DEBUGFS_ADD_COUNTER(name, field) \
328 if (sizeof(sta->field) == sizeof(u32)) \
329 debugfs_create_u32(#name, 0400, sta->debugfs.dir, \
330 (u32 *) &sta->field); \
331 else \
332 debugfs_create_u64(#name, 0400, sta->debugfs.dir, \
333 (u64 *) &sta->field);
334
335 void ieee80211_sta_debugfs_add(struct sta_info *sta)
336 {
337 struct dentry *stations_dir = sta->sdata->debugfs.subdir_stations;
338 u8 mac[3*ETH_ALEN];
339
340 sta->debugfs.add_has_run = true;
341
342 if (!stations_dir)
343 return;
344
345 snprintf(mac, sizeof(mac), "%pM", sta->sta.addr);
346
347 /*
348 * This might fail due to a race condition:
349 * When mac80211 unlinks a station, the debugfs entries
350 * remain, but it is already possible to link a new
351 * station with the same address which triggers adding
352 * it to debugfs; therefore, if the old station isn't
353 * destroyed quickly enough the old station's debugfs
354 * dir might still be around.
355 */
356 sta->debugfs.dir = debugfs_create_dir(mac, stations_dir);
357 if (!sta->debugfs.dir)
358 return;
359
360 DEBUGFS_ADD(flags);
361 DEBUGFS_ADD(num_ps_buf_frames);
362 DEBUGFS_ADD(inactive_ms);
363 DEBUGFS_ADD(connected_time);
364 DEBUGFS_ADD(last_seq_ctrl);
365 DEBUGFS_ADD(agg_status);
366 DEBUGFS_ADD(dev);
367 DEBUGFS_ADD(last_signal);
368 DEBUGFS_ADD(ht_capa);
369
370 DEBUGFS_ADD_COUNTER(rx_packets, rx_packets);
371 DEBUGFS_ADD_COUNTER(tx_packets, tx_packets);
372 DEBUGFS_ADD_COUNTER(rx_bytes, rx_bytes);
373 DEBUGFS_ADD_COUNTER(tx_bytes, tx_bytes);
374 DEBUGFS_ADD_COUNTER(rx_duplicates, num_duplicates);
375 DEBUGFS_ADD_COUNTER(rx_fragments, rx_fragments);
376 DEBUGFS_ADD_COUNTER(rx_dropped, rx_dropped);
377 DEBUGFS_ADD_COUNTER(tx_fragments, tx_fragments);
378 DEBUGFS_ADD_COUNTER(tx_filtered, tx_filtered_count);
379 DEBUGFS_ADD_COUNTER(tx_retry_failed, tx_retry_failed);
380 DEBUGFS_ADD_COUNTER(tx_retry_count, tx_retry_count);
381 DEBUGFS_ADD_COUNTER(wep_weak_iv_count, wep_weak_iv_count);
382 }
383
384 void ieee80211_sta_debugfs_remove(struct sta_info *sta)
385 {
386 debugfs_remove_recursive(sta->debugfs.dir);
387 sta->debugfs.dir = NULL;
388 }
CJK support for tty framebuffer vt