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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") | |
e9f207f0 JB |
33 | #define STA_READ_S(name, field) STA_READ(name, 20, field, "%s\n") |
34 | ||
e9f207f0 JB |
35 | #define STA_OPS(name) \ |
36 | static const struct file_operations sta_ ##name## _ops = { \ | |
37 | .read = sta_##name##_read, \ | |
38 | .open = mac80211_open_file_generic, \ | |
39 | } | |
40 | ||
a75b4363 JB |
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 = mac80211_open_file_generic, \ | |
46 | } | |
47 | ||
e9f207f0 JB |
48 | #define STA_FILE(name, field, format) \ |
49 | STA_READ_##format(name, field) \ | |
50 | STA_OPS(name) | |
51 | ||
17741cdc | 52 | STA_FILE(aid, sta.aid, D); |
47846c9b | 53 | STA_FILE(dev, sdata->name, S); |
e9f207f0 | 54 | STA_FILE(last_signal, last_signal, D); |
e9f207f0 JB |
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[100]; | |
60 | struct sta_info *sta = file->private_data; | |
07346f81 | 61 | u32 staflags = get_sta_flags(sta); |
af818581 | 62 | int res = scnprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s%s%s", |
07346f81 JB |
63 | staflags & WLAN_STA_AUTH ? "AUTH\n" : "", |
64 | staflags & WLAN_STA_ASSOC ? "ASSOC\n" : "", | |
af818581 JB |
65 | staflags & WLAN_STA_PS_STA ? "PS (sta)\n" : "", |
66 | staflags & WLAN_STA_PS_DRIVER ? "PS (driver)\n" : "", | |
07346f81 JB |
67 | staflags & WLAN_STA_AUTHORIZED ? "AUTHORIZED\n" : "", |
68 | staflags & WLAN_STA_SHORT_PREAMBLE ? "SHORT PREAMBLE\n" : "", | |
69 | staflags & WLAN_STA_WME ? "WME\n" : "", | |
5394af4d JM |
70 | staflags & WLAN_STA_WDS ? "WDS\n" : "", |
71 | staflags & WLAN_STA_MFP ? "MFP\n" : ""); | |
e9f207f0 JB |
72 | return simple_read_from_buffer(userbuf, count, ppos, buf, res); |
73 | } | |
74 | STA_OPS(flags); | |
75 | ||
76 | static ssize_t sta_num_ps_buf_frames_read(struct file *file, | |
77 | char __user *userbuf, | |
78 | size_t count, loff_t *ppos) | |
79 | { | |
80 | char buf[20]; | |
81 | struct sta_info *sta = file->private_data; | |
82 | int res = scnprintf(buf, sizeof(buf), "%u\n", | |
83 | skb_queue_len(&sta->ps_tx_buf)); | |
84 | return simple_read_from_buffer(userbuf, count, ppos, buf, res); | |
85 | } | |
86 | STA_OPS(num_ps_buf_frames); | |
87 | ||
e9f207f0 JB |
88 | static ssize_t sta_inactive_ms_read(struct file *file, char __user *userbuf, |
89 | size_t count, loff_t *ppos) | |
90 | { | |
91 | char buf[20]; | |
92 | struct sta_info *sta = file->private_data; | |
93 | int res = scnprintf(buf, sizeof(buf), "%d\n", | |
94 | jiffies_to_msecs(jiffies - sta->last_rx)); | |
95 | return simple_read_from_buffer(userbuf, count, ppos, buf, res); | |
96 | } | |
97 | STA_OPS(inactive_ms); | |
98 | ||
99 | static ssize_t sta_last_seq_ctrl_read(struct file *file, char __user *userbuf, | |
100 | size_t count, loff_t *ppos) | |
101 | { | |
102 | char buf[15*NUM_RX_DATA_QUEUES], *p = buf; | |
103 | int i; | |
104 | struct sta_info *sta = file->private_data; | |
105 | for (i = 0; i < NUM_RX_DATA_QUEUES; i++) | |
106 | p += scnprintf(p, sizeof(buf)+buf-p, "%x ", | |
ba9b07d0 | 107 | le16_to_cpu(sta->last_seq_ctrl[i])); |
e9f207f0 JB |
108 | p += scnprintf(p, sizeof(buf)+buf-p, "\n"); |
109 | return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); | |
110 | } | |
111 | STA_OPS(last_seq_ctrl); | |
112 | ||
eb2ba62e RR |
113 | static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf, |
114 | size_t count, loff_t *ppos) | |
115 | { | |
098a6070 | 116 | char buf[71 + STA_TID_NUM * 40], *p = buf; |
eb2ba62e RR |
117 | int i; |
118 | struct sta_info *sta = file->private_data; | |
eb2ba62e | 119 | |
386aa23d | 120 | spin_lock_bh(&sta->lock); |
e0b20f1c | 121 | p += scnprintf(p, sizeof(buf) + buf - p, "next dialog_token: %#02x\n", |
386aa23d | 122 | sta->ampdu_mlme.dialog_token_allocator + 1); |
e0b20f1c | 123 | p += scnprintf(p, sizeof(buf) + buf - p, |
098a6070 | 124 | "TID\t\tRX active\tDTKN\tSSN\t\tTX\tDTKN\tSSN\tpending\n"); |
386aa23d | 125 | for (i = 0; i < STA_TID_NUM; i++) { |
e0b20f1c PR |
126 | p += scnprintf(p, sizeof(buf) + buf - p, "%02d", i); |
127 | p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", | |
098a6070 | 128 | sta->ampdu_mlme.tid_active_rx[i]); |
e0b20f1c | 129 | p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x", |
098a6070 | 130 | sta->ampdu_mlme.tid_active_rx[i] ? |
386aa23d | 131 | sta->ampdu_mlme.tid_rx[i]->dialog_token : 0); |
e0b20f1c | 132 | p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x", |
098a6070 | 133 | sta->ampdu_mlme.tid_active_rx[i] ? |
386aa23d JB |
134 | sta->ampdu_mlme.tid_rx[i]->ssn : 0); |
135 | ||
e0b20f1c | 136 | p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", |
386aa23d | 137 | sta->ampdu_mlme.tid_state_tx[i]); |
e0b20f1c | 138 | p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x", |
386aa23d JB |
139 | sta->ampdu_mlme.tid_state_tx[i] ? |
140 | sta->ampdu_mlme.tid_tx[i]->dialog_token : 0); | |
e0b20f1c | 141 | p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x", |
386aa23d JB |
142 | sta->ampdu_mlme.tid_state_tx[i] ? |
143 | sta->ampdu_mlme.tid_tx[i]->ssn : 0); | |
e0b20f1c | 144 | p += scnprintf(p, sizeof(buf) + buf - p, "\t%03d", |
386aa23d JB |
145 | sta->ampdu_mlme.tid_state_tx[i] ? |
146 | skb_queue_len(&sta->ampdu_mlme.tid_tx[i]->pending) : 0); | |
e0b20f1c | 147 | p += scnprintf(p, sizeof(buf) + buf - p, "\n"); |
386aa23d JB |
148 | } |
149 | spin_unlock_bh(&sta->lock); | |
eb2ba62e RR |
150 | |
151 | return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); | |
152 | } | |
a75b4363 JB |
153 | |
154 | static ssize_t sta_agg_status_write(struct file *file, const char __user *userbuf, | |
155 | size_t count, loff_t *ppos) | |
156 | { | |
157 | char _buf[12], *buf = _buf; | |
158 | struct sta_info *sta = file->private_data; | |
159 | bool start, tx; | |
160 | unsigned long tid; | |
161 | int ret; | |
162 | ||
163 | if (count > sizeof(_buf)) | |
164 | return -EINVAL; | |
165 | ||
166 | if (copy_from_user(buf, userbuf, count)) | |
167 | return -EFAULT; | |
168 | ||
169 | buf[sizeof(_buf) - 1] = '\0'; | |
170 | ||
171 | if (strncmp(buf, "tx ", 3) == 0) { | |
172 | buf += 3; | |
173 | tx = true; | |
174 | } else if (strncmp(buf, "rx ", 3) == 0) { | |
175 | buf += 3; | |
176 | tx = false; | |
177 | } else | |
178 | return -EINVAL; | |
179 | ||
180 | if (strncmp(buf, "start ", 6) == 0) { | |
181 | buf += 6; | |
182 | start = true; | |
183 | if (!tx) | |
184 | return -EINVAL; | |
185 | } else if (strncmp(buf, "stop ", 5) == 0) { | |
186 | buf += 5; | |
187 | start = false; | |
188 | } else | |
189 | return -EINVAL; | |
190 | ||
191 | tid = simple_strtoul(buf, NULL, 0); | |
192 | ||
193 | if (tid >= STA_TID_NUM) | |
194 | return -EINVAL; | |
195 | ||
196 | if (tx) { | |
197 | if (start) | |
198 | ret = ieee80211_start_tx_ba_session(&sta->sta, tid); | |
199 | else | |
6a8579d0 | 200 | ret = ieee80211_stop_tx_ba_session(&sta->sta, tid); |
a75b4363 JB |
201 | } else { |
202 | __ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT, 3); | |
203 | ret = 0; | |
204 | } | |
205 | ||
206 | return ret ?: count; | |
207 | } | |
208 | STA_OPS_RW(agg_status); | |
eb2ba62e | 209 | |
64491f0e JB |
210 | static ssize_t sta_ht_capa_read(struct file *file, char __user *userbuf, |
211 | size_t count, loff_t *ppos) | |
212 | { | |
7db94e21 LR |
213 | #define PRINT_HT_CAP(_cond, _str) \ |
214 | do { \ | |
215 | if (_cond) \ | |
216 | p += scnprintf(p, sizeof(buf)+buf-p, "\t" _str "\n"); \ | |
217 | } while (0) | |
4c82bf8e | 218 | char buf[512], *p = buf; |
64491f0e JB |
219 | int i; |
220 | struct sta_info *sta = file->private_data; | |
221 | struct ieee80211_sta_ht_cap *htc = &sta->sta.ht_cap; | |
222 | ||
223 | p += scnprintf(p, sizeof(buf) + buf - p, "ht %ssupported\n", | |
224 | htc->ht_supported ? "" : "not "); | |
225 | if (htc->ht_supported) { | |
cb136f54 | 226 | p += scnprintf(p, sizeof(buf)+buf-p, "cap: %#.4x\n", htc->cap); |
7db94e21 | 227 | |
c15cf5fc | 228 | PRINT_HT_CAP((htc->cap & BIT(0)), "RX LDPC"); |
7db94e21 LR |
229 | PRINT_HT_CAP((htc->cap & BIT(1)), "HT20/HT40"); |
230 | PRINT_HT_CAP(!(htc->cap & BIT(1)), "HT20"); | |
231 | ||
232 | PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 0, "Static SM Power Save"); | |
233 | PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 1, "Dynamic SM Power Save"); | |
234 | PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 3, "SM Power Save disabled"); | |
235 | ||
236 | PRINT_HT_CAP((htc->cap & BIT(4)), "RX Greenfield"); | |
237 | PRINT_HT_CAP((htc->cap & BIT(5)), "RX HT20 SGI"); | |
238 | PRINT_HT_CAP((htc->cap & BIT(6)), "RX HT40 SGI"); | |
239 | PRINT_HT_CAP((htc->cap & BIT(7)), "TX STBC"); | |
240 | ||
241 | PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 0, "No RX STBC"); | |
242 | PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 1, "RX STBC 1-stream"); | |
243 | PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 2, "RX STBC 2-streams"); | |
244 | PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 3, "RX STBC 3-streams"); | |
245 | ||
246 | PRINT_HT_CAP((htc->cap & BIT(10)), "HT Delayed Block Ack"); | |
247 | ||
248 | PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: " | |
249 | "3839 bytes"); | |
250 | PRINT_HT_CAP(!(htc->cap & BIT(11)), "Max AMSDU length: " | |
251 | "7935 bytes"); | |
252 | ||
253 | /* | |
254 | * For beacons and probe response this would mean the BSS | |
255 | * does or does not allow the usage of DSSS/CCK HT40. | |
256 | * Otherwise it means the STA does or does not use | |
257 | * DSSS/CCK HT40. | |
258 | */ | |
259 | PRINT_HT_CAP((htc->cap & BIT(12)), "DSSS/CCK HT40"); | |
260 | PRINT_HT_CAP(!(htc->cap & BIT(12)), "No DSSS/CCK HT40"); | |
261 | ||
262 | /* BIT(13) is reserved */ | |
263 | ||
264 | PRINT_HT_CAP((htc->cap & BIT(14)), "40 MHz Intolerant"); | |
265 | ||
266 | PRINT_HT_CAP((htc->cap & BIT(15)), "L-SIG TXOP protection"); | |
267 | ||
64491f0e JB |
268 | p += scnprintf(p, sizeof(buf)+buf-p, "ampdu factor/density: %d/%d\n", |
269 | htc->ampdu_factor, htc->ampdu_density); | |
270 | p += scnprintf(p, sizeof(buf)+buf-p, "MCS mask:"); | |
9da3e068 | 271 | |
64491f0e JB |
272 | for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) |
273 | p += scnprintf(p, sizeof(buf)+buf-p, " %.2x", | |
274 | htc->mcs.rx_mask[i]); | |
9da3e068 LR |
275 | p += scnprintf(p, sizeof(buf)+buf-p, "\n"); |
276 | ||
277 | /* If not set this is meaningless */ | |
278 | if (le16_to_cpu(htc->mcs.rx_highest)) { | |
279 | p += scnprintf(p, sizeof(buf)+buf-p, | |
280 | "MCS rx highest: %d Mbps\n", | |
281 | le16_to_cpu(htc->mcs.rx_highest)); | |
282 | } | |
283 | ||
64491f0e JB |
284 | p += scnprintf(p, sizeof(buf)+buf-p, "MCS tx params: %x\n", |
285 | htc->mcs.tx_params); | |
286 | } | |
287 | ||
288 | return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); | |
289 | } | |
290 | STA_OPS(ht_capa); | |
291 | ||
e9f207f0 | 292 | #define DEBUGFS_ADD(name) \ |
7bcfaf2f | 293 | debugfs_create_file(#name, 0400, \ |
e9f207f0 JB |
294 | sta->debugfs.dir, sta, &sta_ ##name## _ops); |
295 | ||
2826bcd8 FF |
296 | #define DEBUGFS_ADD_COUNTER(name, field) \ |
297 | if (sizeof(sta->field) == sizeof(u32)) \ | |
298 | debugfs_create_u32(#name, 0400, sta->debugfs.dir, \ | |
299 | (u32 *) &sta->field); \ | |
300 | else \ | |
301 | debugfs_create_u64(#name, 0400, sta->debugfs.dir, \ | |
302 | (u64 *) &sta->field); | |
e9f207f0 JB |
303 | |
304 | void ieee80211_sta_debugfs_add(struct sta_info *sta) | |
305 | { | |
e9f207f0 | 306 | struct dentry *stations_dir = sta->local->debugfs.stations; |
0c68ae26 | 307 | u8 mac[3*ETH_ALEN]; |
e9f207f0 | 308 | |
63044e9f JB |
309 | sta->debugfs.add_has_run = true; |
310 | ||
e9f207f0 JB |
311 | if (!stations_dir) |
312 | return; | |
313 | ||
0c68ae26 | 314 | snprintf(mac, sizeof(mac), "%pM", sta->sta.addr); |
e9f207f0 | 315 | |
63044e9f JB |
316 | /* |
317 | * This might fail due to a race condition: | |
318 | * When mac80211 unlinks a station, the debugfs entries | |
319 | * remain, but it is already possible to link a new | |
320 | * station with the same address which triggers adding | |
321 | * it to debugfs; therefore, if the old station isn't | |
322 | * destroyed quickly enough the old station's debugfs | |
323 | * dir might still be around. | |
324 | */ | |
0795af57 | 325 | sta->debugfs.dir = debugfs_create_dir(mac, stations_dir); |
e9f207f0 JB |
326 | if (!sta->debugfs.dir) |
327 | return; | |
328 | ||
329 | DEBUGFS_ADD(flags); | |
330 | DEBUGFS_ADD(num_ps_buf_frames); | |
e9f207f0 JB |
331 | DEBUGFS_ADD(inactive_ms); |
332 | DEBUGFS_ADD(last_seq_ctrl); | |
eb2ba62e | 333 | DEBUGFS_ADD(agg_status); |
386aa23d | 334 | DEBUGFS_ADD(dev); |
386aa23d | 335 | DEBUGFS_ADD(last_signal); |
64491f0e | 336 | DEBUGFS_ADD(ht_capa); |
2826bcd8 FF |
337 | |
338 | DEBUGFS_ADD_COUNTER(rx_packets, rx_packets); | |
339 | DEBUGFS_ADD_COUNTER(tx_packets, tx_packets); | |
340 | DEBUGFS_ADD_COUNTER(rx_bytes, rx_bytes); | |
341 | DEBUGFS_ADD_COUNTER(tx_bytes, tx_bytes); | |
342 | DEBUGFS_ADD_COUNTER(rx_duplicates, num_duplicates); | |
343 | DEBUGFS_ADD_COUNTER(rx_fragments, rx_fragments); | |
344 | DEBUGFS_ADD_COUNTER(rx_dropped, rx_dropped); | |
345 | DEBUGFS_ADD_COUNTER(tx_fragments, tx_fragments); | |
346 | DEBUGFS_ADD_COUNTER(tx_filtered, tx_filtered_count); | |
347 | DEBUGFS_ADD_COUNTER(tx_retry_failed, tx_retry_failed); | |
348 | DEBUGFS_ADD_COUNTER(tx_retry_count, tx_retry_count); | |
349 | DEBUGFS_ADD_COUNTER(wep_weak_iv_count, wep_weak_iv_count); | |
e9f207f0 JB |
350 | } |
351 | ||
352 | void ieee80211_sta_debugfs_remove(struct sta_info *sta) | |
353 | { | |
7bcfaf2f | 354 | debugfs_remove_recursive(sta->debugfs.dir); |
e9f207f0 JB |
355 | sta->debugfs.dir = NULL; |
356 | } |