Commit | Line | Data |
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e9f207f0 JB |
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, buflen, 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 | int res; \ | |
26 | struct sta_info *sta = file->private_data; \ | |
27 | char buf[buflen]; \ | |
28 | res = scnprintf(buf, buflen, format_string, sta->field); \ | |
29 | return simple_read_from_buffer(userbuf, count, ppos, buf, res); \ | |
30 | } | |
31 | #define STA_READ_D(name, field) STA_READ(name, 20, field, "%d\n") | |
32 | #define STA_READ_U(name, field) STA_READ(name, 20, field, "%u\n") | |
33 | #define STA_READ_LU(name, field) STA_READ(name, 20, field, "%lu\n") | |
34 | #define STA_READ_S(name, field) STA_READ(name, 20, field, "%s\n") | |
35 | ||
e9f207f0 JB |
36 | #define STA_OPS(name) \ |
37 | static const struct file_operations sta_ ##name## _ops = { \ | |
38 | .read = sta_##name##_read, \ | |
39 | .open = mac80211_open_file_generic, \ | |
40 | } | |
41 | ||
a75b4363 JB |
42 | #define STA_OPS_RW(name) \ |
43 | static const struct file_operations sta_ ##name## _ops = { \ | |
44 | .read = sta_##name##_read, \ | |
45 | .write = sta_##name##_write, \ | |
46 | .open = mac80211_open_file_generic, \ | |
47 | } | |
48 | ||
e9f207f0 JB |
49 | #define STA_FILE(name, field, format) \ |
50 | STA_READ_##format(name, field) \ | |
51 | STA_OPS(name) | |
52 | ||
17741cdc | 53 | STA_FILE(aid, sta.aid, D); |
47846c9b | 54 | STA_FILE(dev, sdata->name, S); |
e9f207f0 JB |
55 | STA_FILE(rx_packets, rx_packets, LU); |
56 | STA_FILE(tx_packets, tx_packets, LU); | |
57 | STA_FILE(rx_bytes, rx_bytes, LU); | |
58 | STA_FILE(tx_bytes, tx_bytes, LU); | |
59 | STA_FILE(rx_duplicates, num_duplicates, LU); | |
60 | STA_FILE(rx_fragments, rx_fragments, LU); | |
61 | STA_FILE(rx_dropped, rx_dropped, LU); | |
62 | STA_FILE(tx_fragments, tx_fragments, LU); | |
63 | STA_FILE(tx_filtered, tx_filtered_count, LU); | |
e9f207f0 JB |
64 | STA_FILE(tx_retry_failed, tx_retry_failed, LU); |
65 | STA_FILE(tx_retry_count, tx_retry_count, LU); | |
e9f207f0 | 66 | STA_FILE(last_signal, last_signal, D); |
693b1bbc | 67 | STA_FILE(wep_weak_iv_count, wep_weak_iv_count, LU); |
e9f207f0 JB |
68 | |
69 | static ssize_t sta_flags_read(struct file *file, char __user *userbuf, | |
70 | size_t count, loff_t *ppos) | |
71 | { | |
72 | char buf[100]; | |
73 | struct sta_info *sta = file->private_data; | |
07346f81 | 74 | u32 staflags = get_sta_flags(sta); |
af818581 | 75 | int res = scnprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s%s%s", |
07346f81 JB |
76 | staflags & WLAN_STA_AUTH ? "AUTH\n" : "", |
77 | staflags & WLAN_STA_ASSOC ? "ASSOC\n" : "", | |
af818581 JB |
78 | staflags & WLAN_STA_PS_STA ? "PS (sta)\n" : "", |
79 | staflags & WLAN_STA_PS_DRIVER ? "PS (driver)\n" : "", | |
07346f81 JB |
80 | staflags & WLAN_STA_AUTHORIZED ? "AUTHORIZED\n" : "", |
81 | staflags & WLAN_STA_SHORT_PREAMBLE ? "SHORT PREAMBLE\n" : "", | |
82 | staflags & WLAN_STA_WME ? "WME\n" : "", | |
5394af4d JM |
83 | staflags & WLAN_STA_WDS ? "WDS\n" : "", |
84 | staflags & WLAN_STA_MFP ? "MFP\n" : ""); | |
e9f207f0 JB |
85 | return simple_read_from_buffer(userbuf, count, ppos, buf, res); |
86 | } | |
87 | STA_OPS(flags); | |
88 | ||
89 | static ssize_t sta_num_ps_buf_frames_read(struct file *file, | |
90 | char __user *userbuf, | |
91 | size_t count, loff_t *ppos) | |
92 | { | |
93 | char buf[20]; | |
94 | struct sta_info *sta = file->private_data; | |
95 | int res = scnprintf(buf, sizeof(buf), "%u\n", | |
96 | skb_queue_len(&sta->ps_tx_buf)); | |
97 | return simple_read_from_buffer(userbuf, count, ppos, buf, res); | |
98 | } | |
99 | STA_OPS(num_ps_buf_frames); | |
100 | ||
e9f207f0 JB |
101 | static ssize_t sta_inactive_ms_read(struct file *file, char __user *userbuf, |
102 | size_t count, loff_t *ppos) | |
103 | { | |
104 | char buf[20]; | |
105 | struct sta_info *sta = file->private_data; | |
106 | int res = scnprintf(buf, sizeof(buf), "%d\n", | |
107 | jiffies_to_msecs(jiffies - sta->last_rx)); | |
108 | return simple_read_from_buffer(userbuf, count, ppos, buf, res); | |
109 | } | |
110 | STA_OPS(inactive_ms); | |
111 | ||
112 | static ssize_t sta_last_seq_ctrl_read(struct file *file, char __user *userbuf, | |
113 | size_t count, loff_t *ppos) | |
114 | { | |
115 | char buf[15*NUM_RX_DATA_QUEUES], *p = buf; | |
116 | int i; | |
117 | struct sta_info *sta = file->private_data; | |
118 | for (i = 0; i < NUM_RX_DATA_QUEUES; i++) | |
119 | p += scnprintf(p, sizeof(buf)+buf-p, "%x ", | |
ba9b07d0 | 120 | le16_to_cpu(sta->last_seq_ctrl[i])); |
e9f207f0 JB |
121 | p += scnprintf(p, sizeof(buf)+buf-p, "\n"); |
122 | return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); | |
123 | } | |
124 | STA_OPS(last_seq_ctrl); | |
125 | ||
eb2ba62e RR |
126 | static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf, |
127 | size_t count, loff_t *ppos) | |
128 | { | |
098a6070 | 129 | char buf[71 + STA_TID_NUM * 40], *p = buf; |
eb2ba62e RR |
130 | int i; |
131 | struct sta_info *sta = file->private_data; | |
eb2ba62e | 132 | |
386aa23d | 133 | spin_lock_bh(&sta->lock); |
e0b20f1c | 134 | p += scnprintf(p, sizeof(buf) + buf - p, "next dialog_token: %#02x\n", |
386aa23d | 135 | sta->ampdu_mlme.dialog_token_allocator + 1); |
e0b20f1c | 136 | p += scnprintf(p, sizeof(buf) + buf - p, |
098a6070 | 137 | "TID\t\tRX active\tDTKN\tSSN\t\tTX\tDTKN\tSSN\tpending\n"); |
386aa23d | 138 | for (i = 0; i < STA_TID_NUM; i++) { |
e0b20f1c PR |
139 | p += scnprintf(p, sizeof(buf) + buf - p, "%02d", i); |
140 | p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", | |
098a6070 | 141 | sta->ampdu_mlme.tid_active_rx[i]); |
e0b20f1c | 142 | p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x", |
098a6070 | 143 | sta->ampdu_mlme.tid_active_rx[i] ? |
386aa23d | 144 | sta->ampdu_mlme.tid_rx[i]->dialog_token : 0); |
e0b20f1c | 145 | p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x", |
098a6070 | 146 | sta->ampdu_mlme.tid_active_rx[i] ? |
386aa23d JB |
147 | sta->ampdu_mlme.tid_rx[i]->ssn : 0); |
148 | ||
e0b20f1c | 149 | p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", |
386aa23d | 150 | sta->ampdu_mlme.tid_state_tx[i]); |
e0b20f1c | 151 | p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x", |
386aa23d JB |
152 | sta->ampdu_mlme.tid_state_tx[i] ? |
153 | sta->ampdu_mlme.tid_tx[i]->dialog_token : 0); | |
e0b20f1c | 154 | p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x", |
386aa23d JB |
155 | sta->ampdu_mlme.tid_state_tx[i] ? |
156 | sta->ampdu_mlme.tid_tx[i]->ssn : 0); | |
e0b20f1c | 157 | p += scnprintf(p, sizeof(buf) + buf - p, "\t%03d", |
386aa23d JB |
158 | sta->ampdu_mlme.tid_state_tx[i] ? |
159 | skb_queue_len(&sta->ampdu_mlme.tid_tx[i]->pending) : 0); | |
e0b20f1c | 160 | p += scnprintf(p, sizeof(buf) + buf - p, "\n"); |
386aa23d JB |
161 | } |
162 | spin_unlock_bh(&sta->lock); | |
eb2ba62e RR |
163 | |
164 | return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); | |
165 | } | |
a75b4363 JB |
166 | |
167 | static ssize_t sta_agg_status_write(struct file *file, const char __user *userbuf, | |
168 | size_t count, loff_t *ppos) | |
169 | { | |
170 | char _buf[12], *buf = _buf; | |
171 | struct sta_info *sta = file->private_data; | |
172 | bool start, tx; | |
173 | unsigned long tid; | |
174 | int ret; | |
175 | ||
176 | if (count > sizeof(_buf)) | |
177 | return -EINVAL; | |
178 | ||
179 | if (copy_from_user(buf, userbuf, count)) | |
180 | return -EFAULT; | |
181 | ||
182 | buf[sizeof(_buf) - 1] = '\0'; | |
183 | ||
184 | if (strncmp(buf, "tx ", 3) == 0) { | |
185 | buf += 3; | |
186 | tx = true; | |
187 | } else if (strncmp(buf, "rx ", 3) == 0) { | |
188 | buf += 3; | |
189 | tx = false; | |
190 | } else | |
191 | return -EINVAL; | |
192 | ||
193 | if (strncmp(buf, "start ", 6) == 0) { | |
194 | buf += 6; | |
195 | start = true; | |
196 | if (!tx) | |
197 | return -EINVAL; | |
198 | } else if (strncmp(buf, "stop ", 5) == 0) { | |
199 | buf += 5; | |
200 | start = false; | |
201 | } else | |
202 | return -EINVAL; | |
203 | ||
204 | tid = simple_strtoul(buf, NULL, 0); | |
205 | ||
206 | if (tid >= STA_TID_NUM) | |
207 | return -EINVAL; | |
208 | ||
209 | if (tx) { | |
210 | if (start) | |
211 | ret = ieee80211_start_tx_ba_session(&sta->sta, tid); | |
212 | else | |
213 | ret = ieee80211_stop_tx_ba_session(&sta->sta, tid, | |
214 | WLAN_BACK_RECIPIENT); | |
215 | } else { | |
216 | __ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT, 3); | |
217 | ret = 0; | |
218 | } | |
219 | ||
220 | return ret ?: count; | |
221 | } | |
222 | STA_OPS_RW(agg_status); | |
eb2ba62e | 223 | |
64491f0e JB |
224 | static ssize_t sta_ht_capa_read(struct file *file, char __user *userbuf, |
225 | size_t count, loff_t *ppos) | |
226 | { | |
7db94e21 LR |
227 | #define PRINT_HT_CAP(_cond, _str) \ |
228 | do { \ | |
229 | if (_cond) \ | |
230 | p += scnprintf(p, sizeof(buf)+buf-p, "\t" _str "\n"); \ | |
231 | } while (0) | |
4c82bf8e | 232 | char buf[512], *p = buf; |
64491f0e JB |
233 | int i; |
234 | struct sta_info *sta = file->private_data; | |
235 | struct ieee80211_sta_ht_cap *htc = &sta->sta.ht_cap; | |
236 | ||
237 | p += scnprintf(p, sizeof(buf) + buf - p, "ht %ssupported\n", | |
238 | htc->ht_supported ? "" : "not "); | |
239 | if (htc->ht_supported) { | |
cb136f54 | 240 | p += scnprintf(p, sizeof(buf)+buf-p, "cap: %#.4x\n", htc->cap); |
7db94e21 | 241 | |
c15cf5fc | 242 | PRINT_HT_CAP((htc->cap & BIT(0)), "RX LDPC"); |
7db94e21 LR |
243 | PRINT_HT_CAP((htc->cap & BIT(1)), "HT20/HT40"); |
244 | PRINT_HT_CAP(!(htc->cap & BIT(1)), "HT20"); | |
245 | ||
246 | PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 0, "Static SM Power Save"); | |
247 | PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 1, "Dynamic SM Power Save"); | |
248 | PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 3, "SM Power Save disabled"); | |
249 | ||
250 | PRINT_HT_CAP((htc->cap & BIT(4)), "RX Greenfield"); | |
251 | PRINT_HT_CAP((htc->cap & BIT(5)), "RX HT20 SGI"); | |
252 | PRINT_HT_CAP((htc->cap & BIT(6)), "RX HT40 SGI"); | |
253 | PRINT_HT_CAP((htc->cap & BIT(7)), "TX STBC"); | |
254 | ||
255 | PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 0, "No RX STBC"); | |
256 | PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 1, "RX STBC 1-stream"); | |
257 | PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 2, "RX STBC 2-streams"); | |
258 | PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 3, "RX STBC 3-streams"); | |
259 | ||
260 | PRINT_HT_CAP((htc->cap & BIT(10)), "HT Delayed Block Ack"); | |
261 | ||
262 | PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: " | |
263 | "3839 bytes"); | |
264 | PRINT_HT_CAP(!(htc->cap & BIT(11)), "Max AMSDU length: " | |
265 | "7935 bytes"); | |
266 | ||
267 | /* | |
268 | * For beacons and probe response this would mean the BSS | |
269 | * does or does not allow the usage of DSSS/CCK HT40. | |
270 | * Otherwise it means the STA does or does not use | |
271 | * DSSS/CCK HT40. | |
272 | */ | |
273 | PRINT_HT_CAP((htc->cap & BIT(12)), "DSSS/CCK HT40"); | |
274 | PRINT_HT_CAP(!(htc->cap & BIT(12)), "No DSSS/CCK HT40"); | |
275 | ||
276 | /* BIT(13) is reserved */ | |
277 | ||
278 | PRINT_HT_CAP((htc->cap & BIT(14)), "40 MHz Intolerant"); | |
279 | ||
280 | PRINT_HT_CAP((htc->cap & BIT(15)), "L-SIG TXOP protection"); | |
281 | ||
64491f0e JB |
282 | p += scnprintf(p, sizeof(buf)+buf-p, "ampdu factor/density: %d/%d\n", |
283 | htc->ampdu_factor, htc->ampdu_density); | |
284 | p += scnprintf(p, sizeof(buf)+buf-p, "MCS mask:"); | |
9da3e068 | 285 | |
64491f0e JB |
286 | for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) |
287 | p += scnprintf(p, sizeof(buf)+buf-p, " %.2x", | |
288 | htc->mcs.rx_mask[i]); | |
9da3e068 LR |
289 | p += scnprintf(p, sizeof(buf)+buf-p, "\n"); |
290 | ||
291 | /* If not set this is meaningless */ | |
292 | if (le16_to_cpu(htc->mcs.rx_highest)) { | |
293 | p += scnprintf(p, sizeof(buf)+buf-p, | |
294 | "MCS rx highest: %d Mbps\n", | |
295 | le16_to_cpu(htc->mcs.rx_highest)); | |
296 | } | |
297 | ||
64491f0e JB |
298 | p += scnprintf(p, sizeof(buf)+buf-p, "MCS tx params: %x\n", |
299 | htc->mcs.tx_params); | |
300 | } | |
301 | ||
302 | return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); | |
303 | } | |
304 | STA_OPS(ht_capa); | |
305 | ||
e9f207f0 | 306 | #define DEBUGFS_ADD(name) \ |
7bcfaf2f | 307 | debugfs_create_file(#name, 0400, \ |
e9f207f0 JB |
308 | sta->debugfs.dir, sta, &sta_ ##name## _ops); |
309 | ||
e9f207f0 JB |
310 | |
311 | void ieee80211_sta_debugfs_add(struct sta_info *sta) | |
312 | { | |
e9f207f0 | 313 | struct dentry *stations_dir = sta->local->debugfs.stations; |
0c68ae26 | 314 | u8 mac[3*ETH_ALEN]; |
e9f207f0 | 315 | |
63044e9f JB |
316 | sta->debugfs.add_has_run = true; |
317 | ||
e9f207f0 JB |
318 | if (!stations_dir) |
319 | return; | |
320 | ||
0c68ae26 | 321 | snprintf(mac, sizeof(mac), "%pM", sta->sta.addr); |
e9f207f0 | 322 | |
63044e9f JB |
323 | /* |
324 | * This might fail due to a race condition: | |
325 | * When mac80211 unlinks a station, the debugfs entries | |
326 | * remain, but it is already possible to link a new | |
327 | * station with the same address which triggers adding | |
328 | * it to debugfs; therefore, if the old station isn't | |
329 | * destroyed quickly enough the old station's debugfs | |
330 | * dir might still be around. | |
331 | */ | |
0795af57 | 332 | sta->debugfs.dir = debugfs_create_dir(mac, stations_dir); |
e9f207f0 JB |
333 | if (!sta->debugfs.dir) |
334 | return; | |
335 | ||
336 | DEBUGFS_ADD(flags); | |
337 | DEBUGFS_ADD(num_ps_buf_frames); | |
e9f207f0 JB |
338 | DEBUGFS_ADD(inactive_ms); |
339 | DEBUGFS_ADD(last_seq_ctrl); | |
eb2ba62e | 340 | DEBUGFS_ADD(agg_status); |
386aa23d JB |
341 | DEBUGFS_ADD(dev); |
342 | DEBUGFS_ADD(rx_packets); | |
343 | DEBUGFS_ADD(tx_packets); | |
344 | DEBUGFS_ADD(rx_bytes); | |
345 | DEBUGFS_ADD(tx_bytes); | |
346 | DEBUGFS_ADD(rx_duplicates); | |
347 | DEBUGFS_ADD(rx_fragments); | |
348 | DEBUGFS_ADD(rx_dropped); | |
349 | DEBUGFS_ADD(tx_fragments); | |
350 | DEBUGFS_ADD(tx_filtered); | |
351 | DEBUGFS_ADD(tx_retry_failed); | |
352 | DEBUGFS_ADD(tx_retry_count); | |
353 | DEBUGFS_ADD(last_signal); | |
386aa23d | 354 | DEBUGFS_ADD(wep_weak_iv_count); |
64491f0e | 355 | DEBUGFS_ADD(ht_capa); |
e9f207f0 JB |
356 | } |
357 | ||
358 | void ieee80211_sta_debugfs_remove(struct sta_info *sta) | |
359 | { | |
7bcfaf2f | 360 | debugfs_remove_recursive(sta->debugfs.dir); |
e9f207f0 JB |
361 | sta->debugfs.dir = NULL; |
362 | } |