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> | |
d98ad83e | 5 | * Copyright 2013-2014 Intel Mobile Communications GmbH |
e9f207f0 JB |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | */ | |
11 | ||
12 | #include <linux/debugfs.h> | |
13 | #include <linux/ieee80211.h> | |
14 | #include "ieee80211_i.h" | |
15 | #include "debugfs.h" | |
16 | #include "debugfs_sta.h" | |
17 | #include "sta_info.h" | |
77d2ece6 | 18 | #include "driver-ops.h" |
e9f207f0 JB |
19 | |
20 | /* sta attributtes */ | |
21 | ||
07caf9d6 | 22 | #define STA_READ(name, field, format_string) \ |
e9f207f0 JB |
23 | static ssize_t sta_ ##name## _read(struct file *file, \ |
24 | char __user *userbuf, \ | |
25 | size_t count, loff_t *ppos) \ | |
26 | { \ | |
e9f207f0 | 27 | struct sta_info *sta = file->private_data; \ |
07caf9d6 EP |
28 | return mac80211_format_buffer(userbuf, count, ppos, \ |
29 | format_string, sta->field); \ | |
e9f207f0 | 30 | } |
07caf9d6 | 31 | #define STA_READ_D(name, field) STA_READ(name, field, "%d\n") |
e9f207f0 | 32 | |
e9f207f0 JB |
33 | #define STA_OPS(name) \ |
34 | static const struct file_operations sta_ ##name## _ops = { \ | |
35 | .read = sta_##name##_read, \ | |
234e3405 | 36 | .open = simple_open, \ |
2b18ab36 | 37 | .llseek = generic_file_llseek, \ |
e9f207f0 JB |
38 | } |
39 | ||
a75b4363 JB |
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, \ | |
234e3405 | 44 | .open = simple_open, \ |
2b18ab36 | 45 | .llseek = generic_file_llseek, \ |
a75b4363 JB |
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); |
e9f207f0 JB |
53 | |
54 | static ssize_t sta_flags_read(struct file *file, char __user *userbuf, | |
55 | size_t count, loff_t *ppos) | |
56 | { | |
5bade101 | 57 | char buf[121]; |
e9f207f0 | 58 | struct sta_info *sta = file->private_data; |
c2c98fde | 59 | |
5bade101 JB |
60 | #define TEST(flg) \ |
61 | test_sta_flag(sta, WLAN_STA_##flg) ? #flg "\n" : "" | |
62 | ||
63 | int res = scnprintf(buf, sizeof(buf), | |
a7a6bdd0 | 64 | "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s", |
5bade101 JB |
65 | TEST(AUTH), TEST(ASSOC), TEST(PS_STA), |
66 | TEST(PS_DRIVER), TEST(AUTHORIZED), | |
fb4431bf | 67 | TEST(SHORT_PREAMBLE), |
a74a8c84 JB |
68 | sta->sta.wme ? "WME\n" : "", |
69 | TEST(WDS), TEST(CLEAR_PS_FILT), | |
5bade101 JB |
70 | TEST(MFP), TEST(BLOCK_BA), TEST(PSPOLL), |
71 | TEST(UAPSD), TEST(SP), TEST(TDLS_PEER), | |
9041c1fa | 72 | TEST(TDLS_PEER_AUTH), TEST(TDLS_INITIATOR), |
a7a6bdd0 AN |
73 | TEST(TDLS_CHAN_SWITCH), TEST(TDLS_OFF_CHANNEL), |
74 | TEST(4ADDR_EVENT), TEST(INSERTED), | |
75 | TEST(RATE_CONTROL), TEST(TOFFSET_KNOWN), | |
76 | TEST(MPSP_OWNER), TEST(MPSP_RECIPIENT)); | |
5bade101 | 77 | #undef TEST |
e9f207f0 JB |
78 | return simple_read_from_buffer(userbuf, count, ppos, buf, res); |
79 | } | |
80 | STA_OPS(flags); | |
81 | ||
82 | static ssize_t sta_num_ps_buf_frames_read(struct file *file, | |
83 | char __user *userbuf, | |
84 | size_t count, loff_t *ppos) | |
85 | { | |
e9f207f0 | 86 | struct sta_info *sta = file->private_data; |
948d887d JB |
87 | char buf[17*IEEE80211_NUM_ACS], *p = buf; |
88 | int ac; | |
89 | ||
90 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
91 | p += scnprintf(p, sizeof(buf)+buf-p, "AC%d: %d\n", ac, | |
92 | skb_queue_len(&sta->ps_tx_buf[ac]) + | |
93 | skb_queue_len(&sta->tx_filtered[ac])); | |
94 | return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); | |
e9f207f0 JB |
95 | } |
96 | STA_OPS(num_ps_buf_frames); | |
97 | ||
e9f207f0 JB |
98 | static ssize_t sta_last_seq_ctrl_read(struct file *file, char __user *userbuf, |
99 | size_t count, loff_t *ppos) | |
100 | { | |
5a306f58 | 101 | char buf[15*IEEE80211_NUM_TIDS], *p = buf; |
e9f207f0 JB |
102 | int i; |
103 | struct sta_info *sta = file->private_data; | |
5a306f58 | 104 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) |
e9f207f0 | 105 | p += scnprintf(p, sizeof(buf)+buf-p, "%x ", |
ba9b07d0 | 106 | le16_to_cpu(sta->last_seq_ctrl[i])); |
e9f207f0 JB |
107 | p += scnprintf(p, sizeof(buf)+buf-p, "\n"); |
108 | return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); | |
109 | } | |
110 | STA_OPS(last_seq_ctrl); | |
111 | ||
eb2ba62e RR |
112 | static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf, |
113 | size_t count, loff_t *ppos) | |
114 | { | |
5a306f58 | 115 | char buf[71 + IEEE80211_NUM_TIDS * 40], *p = buf; |
eb2ba62e RR |
116 | int i; |
117 | struct sta_info *sta = file->private_data; | |
dd318575 JB |
118 | struct tid_ampdu_rx *tid_rx; |
119 | struct tid_ampdu_tx *tid_tx; | |
120 | ||
121 | rcu_read_lock(); | |
eb2ba62e | 122 | |
e0b20f1c | 123 | p += scnprintf(p, sizeof(buf) + buf - p, "next dialog_token: %#02x\n", |
386aa23d | 124 | sta->ampdu_mlme.dialog_token_allocator + 1); |
e0b20f1c | 125 | p += scnprintf(p, sizeof(buf) + buf - p, |
14b058bb | 126 | "TID\t\tRX\tDTKN\tSSN\t\tTX\tDTKN\tpending\n"); |
dd318575 | 127 | |
5a306f58 | 128 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) { |
dd318575 JB |
129 | tid_rx = rcu_dereference(sta->ampdu_mlme.tid_rx[i]); |
130 | tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[i]); | |
131 | ||
e0b20f1c | 132 | p += scnprintf(p, sizeof(buf) + buf - p, "%02d", i); |
dd318575 | 133 | p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_rx); |
e0b20f1c | 134 | p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x", |
dd318575 | 135 | tid_rx ? tid_rx->dialog_token : 0); |
e0b20f1c | 136 | p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x", |
dd318575 | 137 | tid_rx ? tid_rx->ssn : 0); |
386aa23d | 138 | |
dd318575 | 139 | p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_tx); |
e0b20f1c | 140 | p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x", |
dd318575 | 141 | tid_tx ? tid_tx->dialog_token : 0); |
e0b20f1c | 142 | p += scnprintf(p, sizeof(buf) + buf - p, "\t%03d", |
dd318575 | 143 | tid_tx ? skb_queue_len(&tid_tx->pending) : 0); |
e0b20f1c | 144 | p += scnprintf(p, sizeof(buf) + buf - p, "\n"); |
386aa23d | 145 | } |
dd318575 | 146 | rcu_read_unlock(); |
eb2ba62e RR |
147 | |
148 | return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); | |
149 | } | |
a75b4363 JB |
150 | |
151 | static ssize_t sta_agg_status_write(struct file *file, const char __user *userbuf, | |
152 | size_t count, loff_t *ppos) | |
153 | { | |
c4d2ffac | 154 | char _buf[12] = {}, *buf = _buf; |
a75b4363 JB |
155 | struct sta_info *sta = file->private_data; |
156 | bool start, tx; | |
157 | unsigned long tid; | |
158 | int ret; | |
159 | ||
160 | if (count > sizeof(_buf)) | |
161 | return -EINVAL; | |
162 | ||
163 | if (copy_from_user(buf, userbuf, count)) | |
164 | return -EFAULT; | |
165 | ||
166 | buf[sizeof(_buf) - 1] = '\0'; | |
167 | ||
168 | if (strncmp(buf, "tx ", 3) == 0) { | |
169 | buf += 3; | |
170 | tx = true; | |
171 | } else if (strncmp(buf, "rx ", 3) == 0) { | |
172 | buf += 3; | |
173 | tx = false; | |
174 | } else | |
175 | return -EINVAL; | |
176 | ||
177 | if (strncmp(buf, "start ", 6) == 0) { | |
178 | buf += 6; | |
179 | start = true; | |
180 | if (!tx) | |
181 | return -EINVAL; | |
182 | } else if (strncmp(buf, "stop ", 5) == 0) { | |
183 | buf += 5; | |
184 | start = false; | |
185 | } else | |
186 | return -EINVAL; | |
187 | ||
4b5511eb AP |
188 | ret = kstrtoul(buf, 0, &tid); |
189 | if (ret) | |
190 | return ret; | |
a75b4363 | 191 | |
5a306f58 | 192 | if (tid >= IEEE80211_NUM_TIDS) |
a75b4363 JB |
193 | return -EINVAL; |
194 | ||
195 | if (tx) { | |
196 | if (start) | |
bd2ce6e4 | 197 | ret = ieee80211_start_tx_ba_session(&sta->sta, tid, 5000); |
a75b4363 | 198 | else |
6a8579d0 | 199 | ret = ieee80211_stop_tx_ba_session(&sta->sta, tid); |
a75b4363 | 200 | } else { |
53f73c09 JB |
201 | __ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT, |
202 | 3, true); | |
a75b4363 JB |
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 | ||
7db94e21 | 248 | PRINT_HT_CAP(!(htc->cap & BIT(11)), "Max AMSDU length: " |
904603f9 BG |
249 | "3839 bytes"); |
250 | PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: " | |
7db94e21 LR |
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 | ||
90fcba65 JB |
292 | static ssize_t sta_vht_capa_read(struct file *file, char __user *userbuf, |
293 | size_t count, loff_t *ppos) | |
294 | { | |
295 | char buf[128], *p = buf; | |
296 | struct sta_info *sta = file->private_data; | |
297 | struct ieee80211_sta_vht_cap *vhtc = &sta->sta.vht_cap; | |
298 | ||
299 | p += scnprintf(p, sizeof(buf) + buf - p, "VHT %ssupported\n", | |
300 | vhtc->vht_supported ? "" : "not "); | |
301 | if (vhtc->vht_supported) { | |
302 | p += scnprintf(p, sizeof(buf)+buf-p, "cap: %#.8x\n", vhtc->cap); | |
303 | ||
304 | p += scnprintf(p, sizeof(buf)+buf-p, "RX MCS: %.4x\n", | |
305 | le16_to_cpu(vhtc->vht_mcs.rx_mcs_map)); | |
306 | if (vhtc->vht_mcs.rx_highest) | |
307 | p += scnprintf(p, sizeof(buf)+buf-p, | |
308 | "MCS RX highest: %d Mbps\n", | |
309 | le16_to_cpu(vhtc->vht_mcs.rx_highest)); | |
310 | p += scnprintf(p, sizeof(buf)+buf-p, "TX MCS: %.4x\n", | |
311 | le16_to_cpu(vhtc->vht_mcs.tx_mcs_map)); | |
312 | if (vhtc->vht_mcs.tx_highest) | |
313 | p += scnprintf(p, sizeof(buf)+buf-p, | |
314 | "MCS TX highest: %d Mbps\n", | |
315 | le16_to_cpu(vhtc->vht_mcs.tx_highest)); | |
316 | } | |
317 | ||
318 | return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); | |
319 | } | |
320 | STA_OPS(vht_capa); | |
321 | ||
1f2e651c | 322 | |
e9f207f0 | 323 | #define DEBUGFS_ADD(name) \ |
7bcfaf2f | 324 | debugfs_create_file(#name, 0400, \ |
e9f207f0 JB |
325 | sta->debugfs.dir, sta, &sta_ ##name## _ops); |
326 | ||
2826bcd8 FF |
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); | |
e9f207f0 JB |
334 | |
335 | void ieee80211_sta_debugfs_add(struct sta_info *sta) | |
336 | { | |
77d2ece6 SM |
337 | struct ieee80211_local *local = sta->local; |
338 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
295bafb4 | 339 | struct dentry *stations_dir = sta->sdata->debugfs.subdir_stations; |
0c68ae26 | 340 | u8 mac[3*ETH_ALEN]; |
e9f207f0 | 341 | |
63044e9f JB |
342 | sta->debugfs.add_has_run = true; |
343 | ||
e9f207f0 JB |
344 | if (!stations_dir) |
345 | return; | |
346 | ||
0c68ae26 | 347 | snprintf(mac, sizeof(mac), "%pM", sta->sta.addr); |
e9f207f0 | 348 | |
63044e9f JB |
349 | /* |
350 | * This might fail due to a race condition: | |
351 | * When mac80211 unlinks a station, the debugfs entries | |
352 | * remain, but it is already possible to link a new | |
353 | * station with the same address which triggers adding | |
354 | * it to debugfs; therefore, if the old station isn't | |
355 | * destroyed quickly enough the old station's debugfs | |
356 | * dir might still be around. | |
357 | */ | |
0795af57 | 358 | sta->debugfs.dir = debugfs_create_dir(mac, stations_dir); |
e9f207f0 JB |
359 | if (!sta->debugfs.dir) |
360 | return; | |
361 | ||
362 | DEBUGFS_ADD(flags); | |
363 | DEBUGFS_ADD(num_ps_buf_frames); | |
e9f207f0 | 364 | DEBUGFS_ADD(last_seq_ctrl); |
eb2ba62e | 365 | DEBUGFS_ADD(agg_status); |
64491f0e | 366 | DEBUGFS_ADD(ht_capa); |
90fcba65 | 367 | DEBUGFS_ADD(vht_capa); |
2826bcd8 | 368 | |
e5a9f8d0 JB |
369 | DEBUGFS_ADD_COUNTER(rx_duplicates, rx_stats.num_duplicates); |
370 | DEBUGFS_ADD_COUNTER(rx_fragments, rx_stats.fragments); | |
371 | DEBUGFS_ADD_COUNTER(tx_filtered, status_stats.filtered); | |
77d2ece6 | 372 | |
7cf1f14e JB |
373 | if (sizeof(sta->driver_buffered_tids) == sizeof(u32)) |
374 | debugfs_create_x32("driver_buffered_tids", 0400, | |
375 | sta->debugfs.dir, | |
376 | (u32 *)&sta->driver_buffered_tids); | |
377 | else | |
378 | debugfs_create_x64("driver_buffered_tids", 0400, | |
379 | sta->debugfs.dir, | |
380 | (u64 *)&sta->driver_buffered_tids); | |
381 | ||
77d2ece6 | 382 | drv_sta_add_debugfs(local, sdata, &sta->sta, sta->debugfs.dir); |
e9f207f0 JB |
383 | } |
384 | ||
385 | void ieee80211_sta_debugfs_remove(struct sta_info *sta) | |
386 | { | |
77d2ece6 SM |
387 | struct ieee80211_local *local = sta->local; |
388 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
389 | ||
390 | drv_sta_remove_debugfs(local, sdata, &sta->sta, sta->debugfs.dir); | |
7bcfaf2f | 391 | debugfs_remove_recursive(sta->debugfs.dir); |
e9f207f0 JB |
392 | sta->debugfs.dir = NULL; |
393 | } |