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i2c: rcar: init new messages in irq
[deliverable/linux.git] / net / mac80211 / debugfs_sta.c
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 * Copyright 2013-2014 Intel Mobile Communications GmbH
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"
18 #include "driver-ops.h"
19
20 /* sta attributtes */
21
22 #define STA_READ(name, field, format_string) \
23 static ssize_t sta_ ##name## _read(struct file *file, \
24 char __user *userbuf, \
25 size_t count, loff_t *ppos) \
26 { \
27 struct sta_info *sta = file->private_data; \
28 return mac80211_format_buffer(userbuf, count, ppos, \
29 format_string, sta->field); \
30 }
31 #define STA_READ_D(name, field) STA_READ(name, field, "%d\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(last_ack_signal, last_ack_signal, D);
54
55 static ssize_t sta_flags_read(struct file *file, char __user *userbuf,
56 size_t count, loff_t *ppos)
57 {
58 char buf[121];
59 struct sta_info *sta = file->private_data;
60
61 #define TEST(flg) \
62 test_sta_flag(sta, WLAN_STA_##flg) ? #flg "\n" : ""
63
64 int res = scnprintf(buf, sizeof(buf),
65 "%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",
66 TEST(AUTH), TEST(ASSOC), TEST(PS_STA),
67 TEST(PS_DRIVER), TEST(AUTHORIZED),
68 TEST(SHORT_PREAMBLE),
69 sta->sta.wme ? "WME\n" : "",
70 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(TDLS_INITIATOR),
74 TEST(TDLS_CHAN_SWITCH), TEST(TDLS_OFF_CHANNEL),
75 TEST(4ADDR_EVENT), TEST(INSERTED),
76 TEST(RATE_CONTROL), TEST(TOFFSET_KNOWN),
77 TEST(MPSP_OWNER), TEST(MPSP_RECIPIENT));
78 #undef TEST
79 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
80 }
81 STA_OPS(flags);
82
83 static ssize_t sta_num_ps_buf_frames_read(struct file *file,
84 char __user *userbuf,
85 size_t count, loff_t *ppos)
86 {
87 struct sta_info *sta = file->private_data;
88 char buf[17*IEEE80211_NUM_ACS], *p = buf;
89 int ac;
90
91 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
92 p += scnprintf(p, sizeof(buf)+buf-p, "AC%d: %d\n", ac,
93 skb_queue_len(&sta->ps_tx_buf[ac]) +
94 skb_queue_len(&sta->tx_filtered[ac]));
95 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
96 }
97 STA_OPS(num_ps_buf_frames);
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*IEEE80211_NUM_TIDS], *p = buf;
103 int i;
104 struct sta_info *sta = file->private_data;
105 for (i = 0; i < IEEE80211_NUM_TIDS; i++)
106 p += scnprintf(p, sizeof(buf)+buf-p, "%x ",
107 le16_to_cpu(sta->last_seq_ctrl[i]));
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
113 static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf,
114 size_t count, loff_t *ppos)
115 {
116 char buf[71 + IEEE80211_NUM_TIDS * 40], *p = buf;
117 int i;
118 struct sta_info *sta = file->private_data;
119 struct tid_ampdu_rx *tid_rx;
120 struct tid_ampdu_tx *tid_tx;
121
122 rcu_read_lock();
123
124 p += scnprintf(p, sizeof(buf) + buf - p, "next dialog_token: %#02x\n",
125 sta->ampdu_mlme.dialog_token_allocator + 1);
126 p += scnprintf(p, sizeof(buf) + buf - p,
127 "TID\t\tRX\tDTKN\tSSN\t\tTX\tDTKN\tpending\n");
128
129 for (i = 0; i < IEEE80211_NUM_TIDS; i++) {
130 tid_rx = rcu_dereference(sta->ampdu_mlme.tid_rx[i]);
131 tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[i]);
132
133 p += scnprintf(p, sizeof(buf) + buf - p, "%02d", i);
134 p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_rx);
135 p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
136 tid_rx ? tid_rx->dialog_token : 0);
137 p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x",
138 tid_rx ? tid_rx->ssn : 0);
139
140 p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_tx);
141 p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
142 tid_tx ? tid_tx->dialog_token : 0);
143 p += scnprintf(p, sizeof(buf) + buf - p, "\t%03d",
144 tid_tx ? skb_queue_len(&tid_tx->pending) : 0);
145 p += scnprintf(p, sizeof(buf) + buf - p, "\n");
146 }
147 rcu_read_unlock();
148
149 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
150 }
151
152 static ssize_t sta_agg_status_write(struct file *file, const char __user *userbuf,
153 size_t count, loff_t *ppos)
154 {
155 char _buf[12] = {}, *buf = _buf;
156 struct sta_info *sta = file->private_data;
157 bool start, tx;
158 unsigned long tid;
159 int ret;
160
161 if (count > sizeof(_buf))
162 return -EINVAL;
163
164 if (copy_from_user(buf, userbuf, count))
165 return -EFAULT;
166
167 buf[sizeof(_buf) - 1] = '\0';
168
169 if (strncmp(buf, "tx ", 3) == 0) {
170 buf += 3;
171 tx = true;
172 } else if (strncmp(buf, "rx ", 3) == 0) {
173 buf += 3;
174 tx = false;
175 } else
176 return -EINVAL;
177
178 if (strncmp(buf, "start ", 6) == 0) {
179 buf += 6;
180 start = true;
181 if (!tx)
182 return -EINVAL;
183 } else if (strncmp(buf, "stop ", 5) == 0) {
184 buf += 5;
185 start = false;
186 } else
187 return -EINVAL;
188
189 ret = kstrtoul(buf, 0, &tid);
190 if (ret)
191 return ret;
192
193 if (tid >= IEEE80211_NUM_TIDS)
194 return -EINVAL;
195
196 if (tx) {
197 if (start)
198 ret = ieee80211_start_tx_ba_session(&sta->sta, tid, 5000);
199 else
200 ret = ieee80211_stop_tx_ba_session(&sta->sta, tid);
201 } else {
202 __ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT,
203 3, true);
204 ret = 0;
205 }
206
207 return ret ?: count;
208 }
209 STA_OPS_RW(agg_status);
210
211 static ssize_t sta_ht_capa_read(struct file *file, char __user *userbuf,
212 size_t count, loff_t *ppos)
213 {
214 #define PRINT_HT_CAP(_cond, _str) \
215 do { \
216 if (_cond) \
217 p += scnprintf(p, sizeof(buf)+buf-p, "\t" _str "\n"); \
218 } while (0)
219 char buf[512], *p = buf;
220 int i;
221 struct sta_info *sta = file->private_data;
222 struct ieee80211_sta_ht_cap *htc = &sta->sta.ht_cap;
223
224 p += scnprintf(p, sizeof(buf) + buf - p, "ht %ssupported\n",
225 htc->ht_supported ? "" : "not ");
226 if (htc->ht_supported) {
227 p += scnprintf(p, sizeof(buf)+buf-p, "cap: %#.4x\n", htc->cap);
228
229 PRINT_HT_CAP((htc->cap & BIT(0)), "RX LDPC");
230 PRINT_HT_CAP((htc->cap & BIT(1)), "HT20/HT40");
231 PRINT_HT_CAP(!(htc->cap & BIT(1)), "HT20");
232
233 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 0, "Static SM Power Save");
234 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 1, "Dynamic SM Power Save");
235 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 3, "SM Power Save disabled");
236
237 PRINT_HT_CAP((htc->cap & BIT(4)), "RX Greenfield");
238 PRINT_HT_CAP((htc->cap & BIT(5)), "RX HT20 SGI");
239 PRINT_HT_CAP((htc->cap & BIT(6)), "RX HT40 SGI");
240 PRINT_HT_CAP((htc->cap & BIT(7)), "TX STBC");
241
242 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 0, "No RX STBC");
243 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 1, "RX STBC 1-stream");
244 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 2, "RX STBC 2-streams");
245 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 3, "RX STBC 3-streams");
246
247 PRINT_HT_CAP((htc->cap & BIT(10)), "HT Delayed Block Ack");
248
249 PRINT_HT_CAP(!(htc->cap & BIT(11)), "Max AMSDU length: "
250 "3839 bytes");
251 PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: "
252 "7935 bytes");
253
254 /*
255 * For beacons and probe response this would mean the BSS
256 * does or does not allow the usage of DSSS/CCK HT40.
257 * Otherwise it means the STA does or does not use
258 * DSSS/CCK HT40.
259 */
260 PRINT_HT_CAP((htc->cap & BIT(12)), "DSSS/CCK HT40");
261 PRINT_HT_CAP(!(htc->cap & BIT(12)), "No DSSS/CCK HT40");
262
263 /* BIT(13) is reserved */
264
265 PRINT_HT_CAP((htc->cap & BIT(14)), "40 MHz Intolerant");
266
267 PRINT_HT_CAP((htc->cap & BIT(15)), "L-SIG TXOP protection");
268
269 p += scnprintf(p, sizeof(buf)+buf-p, "ampdu factor/density: %d/%d\n",
270 htc->ampdu_factor, htc->ampdu_density);
271 p += scnprintf(p, sizeof(buf)+buf-p, "MCS mask:");
272
273 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
274 p += scnprintf(p, sizeof(buf)+buf-p, " %.2x",
275 htc->mcs.rx_mask[i]);
276 p += scnprintf(p, sizeof(buf)+buf-p, "\n");
277
278 /* If not set this is meaningless */
279 if (le16_to_cpu(htc->mcs.rx_highest)) {
280 p += scnprintf(p, sizeof(buf)+buf-p,
281 "MCS rx highest: %d Mbps\n",
282 le16_to_cpu(htc->mcs.rx_highest));
283 }
284
285 p += scnprintf(p, sizeof(buf)+buf-p, "MCS tx params: %x\n",
286 htc->mcs.tx_params);
287 }
288
289 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
290 }
291 STA_OPS(ht_capa);
292
293 static ssize_t sta_vht_capa_read(struct file *file, char __user *userbuf,
294 size_t count, loff_t *ppos)
295 {
296 char buf[128], *p = buf;
297 struct sta_info *sta = file->private_data;
298 struct ieee80211_sta_vht_cap *vhtc = &sta->sta.vht_cap;
299
300 p += scnprintf(p, sizeof(buf) + buf - p, "VHT %ssupported\n",
301 vhtc->vht_supported ? "" : "not ");
302 if (vhtc->vht_supported) {
303 p += scnprintf(p, sizeof(buf)+buf-p, "cap: %#.8x\n", vhtc->cap);
304
305 p += scnprintf(p, sizeof(buf)+buf-p, "RX MCS: %.4x\n",
306 le16_to_cpu(vhtc->vht_mcs.rx_mcs_map));
307 if (vhtc->vht_mcs.rx_highest)
308 p += scnprintf(p, sizeof(buf)+buf-p,
309 "MCS RX highest: %d Mbps\n",
310 le16_to_cpu(vhtc->vht_mcs.rx_highest));
311 p += scnprintf(p, sizeof(buf)+buf-p, "TX MCS: %.4x\n",
312 le16_to_cpu(vhtc->vht_mcs.tx_mcs_map));
313 if (vhtc->vht_mcs.tx_highest)
314 p += scnprintf(p, sizeof(buf)+buf-p,
315 "MCS TX highest: %d Mbps\n",
316 le16_to_cpu(vhtc->vht_mcs.tx_highest));
317 }
318
319 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
320 }
321 STA_OPS(vht_capa);
322
323
324 #define DEBUGFS_ADD(name) \
325 debugfs_create_file(#name, 0400, \
326 sta->debugfs.dir, sta, &sta_ ##name## _ops);
327
328 #define DEBUGFS_ADD_COUNTER(name, field) \
329 if (sizeof(sta->field) == sizeof(u32)) \
330 debugfs_create_u32(#name, 0400, sta->debugfs.dir, \
331 (u32 *) &sta->field); \
332 else \
333 debugfs_create_u64(#name, 0400, sta->debugfs.dir, \
334 (u64 *) &sta->field);
335
336 void ieee80211_sta_debugfs_add(struct sta_info *sta)
337 {
338 struct ieee80211_local *local = sta->local;
339 struct ieee80211_sub_if_data *sdata = sta->sdata;
340 struct dentry *stations_dir = sta->sdata->debugfs.subdir_stations;
341 u8 mac[3*ETH_ALEN];
342
343 sta->debugfs.add_has_run = true;
344
345 if (!stations_dir)
346 return;
347
348 snprintf(mac, sizeof(mac), "%pM", sta->sta.addr);
349
350 /*
351 * This might fail due to a race condition:
352 * When mac80211 unlinks a station, the debugfs entries
353 * remain, but it is already possible to link a new
354 * station with the same address which triggers adding
355 * it to debugfs; therefore, if the old station isn't
356 * destroyed quickly enough the old station's debugfs
357 * dir might still be around.
358 */
359 sta->debugfs.dir = debugfs_create_dir(mac, stations_dir);
360 if (!sta->debugfs.dir)
361 return;
362
363 DEBUGFS_ADD(flags);
364 DEBUGFS_ADD(num_ps_buf_frames);
365 DEBUGFS_ADD(last_seq_ctrl);
366 DEBUGFS_ADD(agg_status);
367 DEBUGFS_ADD(ht_capa);
368 DEBUGFS_ADD(vht_capa);
369 DEBUGFS_ADD(last_ack_signal);
370
371 DEBUGFS_ADD_COUNTER(rx_duplicates, num_duplicates);
372 DEBUGFS_ADD_COUNTER(rx_fragments, rx_fragments);
373 DEBUGFS_ADD_COUNTER(tx_filtered, tx_filtered_count);
374
375 if (sizeof(sta->driver_buffered_tids) == sizeof(u32))
376 debugfs_create_x32("driver_buffered_tids", 0400,
377 sta->debugfs.dir,
378 (u32 *)&sta->driver_buffered_tids);
379 else
380 debugfs_create_x64("driver_buffered_tids", 0400,
381 sta->debugfs.dir,
382 (u64 *)&sta->driver_buffered_tids);
383
384 drv_sta_add_debugfs(local, sdata, &sta->sta, sta->debugfs.dir);
385 }
386
387 void ieee80211_sta_debugfs_remove(struct sta_info *sta)
388 {
389 struct ieee80211_local *local = sta->local;
390 struct ieee80211_sub_if_data *sdata = sta->sdata;
391
392 drv_sta_remove_debugfs(local, sdata, &sta->sta, sta->debugfs.dir);
393 debugfs_remove_recursive(sta->debugfs.dir);
394 sta->debugfs.dir = NULL;
395 }
Linux kernel - Deliverables
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