blob: e02ba42ca827501fdefc155d0ad71f2d4ffc2f36 [file] [log] [blame]
Jiri Bence9f207f2007-05-05 11:46:38 -07001/*
2 * mac80211 debugfs for wireless PHYs
3 *
4 * Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
Johannes Bergd98ad832014-09-03 15:24:57 +03005 * Copyright 2013-2014 Intel Mobile Communications GmbH
Jiri Bence9f207f2007-05-05 11:46:38 -07006 *
7 * GPLv2
8 *
9 */
10
11#include <linux/debugfs.h>
12#include <linux/rtnetlink.h>
Michal Kazior9399b862016-05-19 10:37:50 +020013#include <linux/vmalloc.h>
Jiri Bence9f207f2007-05-05 11:46:38 -070014#include "ieee80211_i.h"
Johannes Berg24487982009-04-23 18:52:52 +020015#include "driver-ops.h"
Johannes Berg2c8dccc2008-04-08 15:14:40 -040016#include "rate.h"
Jiri Bence9f207f2007-05-05 11:46:38 -070017#include "debugfs.h"
18
Eliad Peller07caf9d2010-10-27 14:58:29 +020019#define DEBUGFS_FORMAT_BUFFER_SIZE 100
20
21int mac80211_format_buffer(char __user *userbuf, size_t count,
22 loff_t *ppos, char *fmt, ...)
23{
24 va_list args;
25 char buf[DEBUGFS_FORMAT_BUFFER_SIZE];
26 int res;
27
28 va_start(args, fmt);
29 res = vscnprintf(buf, sizeof(buf), fmt, args);
30 va_end(args);
31
32 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
33}
34
Ben Greear279daf62011-03-23 14:04:31 -070035#define DEBUGFS_READONLY_FILE_FN(name, fmt, value...) \
Jiri Bence9f207f2007-05-05 11:46:38 -070036static ssize_t name## _read(struct file *file, char __user *userbuf, \
37 size_t count, loff_t *ppos) \
38{ \
39 struct ieee80211_local *local = file->private_data; \
Jiri Bence9f207f2007-05-05 11:46:38 -070040 \
Eliad Peller07caf9d2010-10-27 14:58:29 +020041 return mac80211_format_buffer(userbuf, count, ppos, \
42 fmt "\n", ##value); \
Ben Greear279daf62011-03-23 14:04:31 -070043}
44
45#define DEBUGFS_READONLY_FILE_OPS(name) \
Jiri Bence9f207f2007-05-05 11:46:38 -070046static const struct file_operations name## _ops = { \
47 .read = name## _read, \
Stephen Boyd234e3402012-04-05 14:25:11 -070048 .open = simple_open, \
Arnd Bergmann2b18ab362010-07-06 19:05:31 +020049 .llseek = generic_file_llseek, \
Jiri Bence9f207f2007-05-05 11:46:38 -070050};
51
Ben Greear279daf62011-03-23 14:04:31 -070052#define DEBUGFS_READONLY_FILE(name, fmt, value...) \
53 DEBUGFS_READONLY_FILE_FN(name, fmt, value) \
54 DEBUGFS_READONLY_FILE_OPS(name)
55
Jiri Bence9f207f2007-05-05 11:46:38 -070056#define DEBUGFS_ADD(name) \
Johannes Berg7bcfaf22009-10-27 12:59:03 +010057 debugfs_create_file(#name, 0400, phyd, local, &name## _ops);
Jiri Bence9f207f2007-05-05 11:46:38 -070058
Johannes Berg827b1fb2009-03-13 11:44:18 +010059#define DEBUGFS_ADD_MODE(name, mode) \
Johannes Berg7bcfaf22009-10-27 12:59:03 +010060 debugfs_create_file(#name, mode, phyd, local, &name## _ops);
Jiri Bence9f207f2007-05-05 11:46:38 -070061
62
Ben Greear83bdf2a2011-02-15 13:11:22 -080063DEBUGFS_READONLY_FILE(user_power, "%d",
64 local->user_power_level);
65DEBUGFS_READONLY_FILE(power, "%d",
66 local->hw.conf.power_level);
Eliad Peller07caf9d2010-10-27 14:58:29 +020067DEBUGFS_READONLY_FILE(total_ps_buffered, "%d",
Jiri Bence9f207f2007-05-05 11:46:38 -070068 local->total_ps_buffered);
Eliad Peller07caf9d2010-10-27 14:58:29 +020069DEBUGFS_READONLY_FILE(wep_iv, "%#08x",
Jiri Bence9f207f2007-05-05 11:46:38 -070070 local->wep_iv & 0xffffff);
Eliad Peller07caf9d2010-10-27 14:58:29 +020071DEBUGFS_READONLY_FILE(rate_ctrl_alg, "%s",
Johannes Bergaf65cd962009-11-17 18:18:36 +010072 local->rate_ctrl ? local->rate_ctrl->ops->name : "hw/driver");
Alina Friedrichsen3b5d6652009-01-24 07:09:59 +010073
Michal Kazior9399b862016-05-19 10:37:50 +020074static ssize_t aqm_read(struct file *file,
75 char __user *user_buf,
76 size_t count,
77 loff_t *ppos)
78{
Toke Høiland-Jørgensen8d51dbb2016-09-12 15:55:43 +020079 struct ieee80211_local *local = file->private_data;
80 struct fq *fq = &local->fq;
81 char buf[200];
82 int len = 0;
83
84 spin_lock_bh(&local->fq.lock);
85 rcu_read_lock();
86
87 len = scnprintf(buf, sizeof(buf),
88 "access name value\n"
89 "R fq_flows_cnt %u\n"
90 "R fq_backlog %u\n"
91 "R fq_overlimit %u\n"
Toke Høiland-Jørgensen2a4e6752016-09-23 21:59:10 +020092 "R fq_overmemory %u\n"
Toke Høiland-Jørgensen8d51dbb2016-09-12 15:55:43 +020093 "R fq_collisions %u\n"
Toke Høiland-Jørgensen2a4e6752016-09-23 21:59:10 +020094 "R fq_memory_usage %u\n"
95 "RW fq_memory_limit %u\n"
Toke Høiland-Jørgensen8d51dbb2016-09-12 15:55:43 +020096 "RW fq_limit %u\n"
97 "RW fq_quantum %u\n",
98 fq->flows_cnt,
99 fq->backlog,
Toke Høiland-Jørgensen2a4e6752016-09-23 21:59:10 +0200100 fq->overmemory,
Toke Høiland-Jørgensen8d51dbb2016-09-12 15:55:43 +0200101 fq->overlimit,
102 fq->collisions,
Toke Høiland-Jørgensen2a4e6752016-09-23 21:59:10 +0200103 fq->memory_usage,
104 fq->memory_limit,
Toke Høiland-Jørgensen8d51dbb2016-09-12 15:55:43 +0200105 fq->limit,
106 fq->quantum);
107
108 rcu_read_unlock();
109 spin_unlock_bh(&local->fq.lock);
Michal Kazior9399b862016-05-19 10:37:50 +0200110
111 return simple_read_from_buffer(user_buf, count, ppos,
Toke Høiland-Jørgensen8d51dbb2016-09-12 15:55:43 +0200112 buf, len);
Michal Kazior9399b862016-05-19 10:37:50 +0200113}
114
115static ssize_t aqm_write(struct file *file,
116 const char __user *user_buf,
117 size_t count,
118 loff_t *ppos)
119{
Toke Høiland-Jørgensen8d51dbb2016-09-12 15:55:43 +0200120 struct ieee80211_local *local = file->private_data;
Michal Kazior9399b862016-05-19 10:37:50 +0200121 char buf[100];
122 size_t len;
123
124 if (count > sizeof(buf))
125 return -EINVAL;
126
127 if (copy_from_user(buf, user_buf, count))
128 return -EFAULT;
129
130 buf[sizeof(buf) - 1] = '\0';
131 len = strlen(buf);
132 if (len > 0 && buf[len-1] == '\n')
133 buf[len-1] = 0;
134
135 if (sscanf(buf, "fq_limit %u", &local->fq.limit) == 1)
136 return count;
Toke Høiland-Jørgensen2a4e6752016-09-23 21:59:10 +0200137 else if (sscanf(buf, "fq_memory_limit %u", &local->fq.memory_limit) == 1)
138 return count;
Michal Kazior9399b862016-05-19 10:37:50 +0200139 else if (sscanf(buf, "fq_quantum %u", &local->fq.quantum) == 1)
140 return count;
141
142 return -EINVAL;
143}
144
145static const struct file_operations aqm_ops = {
146 .write = aqm_write,
147 .read = aqm_read,
Toke Høiland-Jørgensen8d51dbb2016-09-12 15:55:43 +0200148 .open = simple_open,
Michal Kazior9399b862016-05-19 10:37:50 +0200149 .llseek = default_llseek,
150};
151
Johannes Berg2ad48142012-09-19 08:20:24 +0200152#ifdef CONFIG_PM
Johannes Berg827b1fb2009-03-13 11:44:18 +0100153static ssize_t reset_write(struct file *file, const char __user *user_buf,
154 size_t count, loff_t *ppos)
155{
156 struct ieee80211_local *local = file->private_data;
157
158 rtnl_lock();
Johannes Bergeecc4802011-05-04 15:37:29 +0200159 __ieee80211_suspend(&local->hw, NULL);
Johannes Berg827b1fb2009-03-13 11:44:18 +0100160 __ieee80211_resume(&local->hw);
161 rtnl_unlock();
162
163 return count;
164}
165
166static const struct file_operations reset_ops = {
167 .write = reset_write,
Stephen Boyd234e3402012-04-05 14:25:11 -0700168 .open = simple_open,
Arnd Bergmann6038f372010-08-15 18:52:59 +0200169 .llseek = noop_llseek,
Johannes Berg827b1fb2009-03-13 11:44:18 +0100170};
Johannes Berg2ad48142012-09-19 08:20:24 +0200171#endif
Johannes Berg827b1fb2009-03-13 11:44:18 +0100172
Andrey Ryabinin68920c92016-01-20 15:00:51 -0800173static const char *hw_flag_names[] = {
Johannes Berg30686bf2015-06-02 21:39:54 +0200174#define FLAG(F) [IEEE80211_HW_##F] = #F
175 FLAG(HAS_RATE_CONTROL),
176 FLAG(RX_INCLUDES_FCS),
177 FLAG(HOST_BROADCAST_PS_BUFFERING),
178 FLAG(SIGNAL_UNSPEC),
179 FLAG(SIGNAL_DBM),
180 FLAG(NEED_DTIM_BEFORE_ASSOC),
181 FLAG(SPECTRUM_MGMT),
182 FLAG(AMPDU_AGGREGATION),
183 FLAG(SUPPORTS_PS),
184 FLAG(PS_NULLFUNC_STACK),
185 FLAG(SUPPORTS_DYNAMIC_PS),
186 FLAG(MFP_CAPABLE),
187 FLAG(WANT_MONITOR_VIF),
188 FLAG(NO_AUTO_VIF),
189 FLAG(SW_CRYPTO_CONTROL),
190 FLAG(SUPPORT_FAST_XMIT),
191 FLAG(REPORTS_TX_ACK_STATUS),
192 FLAG(CONNECTION_MONITOR),
193 FLAG(QUEUE_CONTROL),
194 FLAG(SUPPORTS_PER_STA_GTK),
195 FLAG(AP_LINK_PS),
196 FLAG(TX_AMPDU_SETUP_IN_HW),
197 FLAG(SUPPORTS_RC_TABLE),
198 FLAG(P2P_DEV_ADDR_FOR_INTF),
199 FLAG(TIMING_BEACON_ONLY),
200 FLAG(SUPPORTS_HT_CCK_RATES),
201 FLAG(CHANCTX_STA_CSA),
202 FLAG(SUPPORTS_CLONED_SKBS),
203 FLAG(SINGLE_SCAN_ON_ALL_BANDS),
Arik Nemtsovb98fb442015-06-10 20:42:59 +0300204 FLAG(TDLS_WIDER_BW),
Emmanuel Grumbach99e7ca42015-08-15 22:39:51 +0300205 FLAG(SUPPORTS_AMSDU_IN_AMPDU),
Helmut Schaa35afa582015-09-09 09:46:32 +0200206 FLAG(BEACON_TX_STATUS),
Johannes Berg31104892015-10-22 17:35:19 +0200207 FLAG(NEEDS_UNIQUE_STA_ADDR),
Sara Sharon412a6d82015-12-08 19:09:05 +0200208 FLAG(SUPPORTS_REORDERING_BUFFER),
Johannes Bergc9c59622016-03-31 20:02:11 +0300209 FLAG(USES_RSS),
Felix Fietkau6e0456b2016-03-03 22:59:00 +0100210 FLAG(TX_AMSDU),
211 FLAG(TX_FRAG_LIST),
Rajkumar Manoharane8a24cd2016-09-14 12:48:32 +0530212 FLAG(REPORTS_LOW_ACK),
Sara Sharonf3fe4e92016-10-18 23:12:11 +0300213 FLAG(SUPPORTS_TX_FRAG),
Johannes Berg30686bf2015-06-02 21:39:54 +0200214#undef FLAG
215};
216
Ben Greear279daf62011-03-23 14:04:31 -0700217static ssize_t hwflags_read(struct file *file, char __user *user_buf,
218 size_t count, loff_t *ppos)
219{
220 struct ieee80211_local *local = file->private_data;
Johannes Berg30686bf2015-06-02 21:39:54 +0200221 size_t bufsz = 30 * NUM_IEEE80211_HW_FLAGS;
222 char *buf = kzalloc(bufsz, GFP_KERNEL);
223 char *pos = buf, *end = buf + bufsz - 1;
Ben Greear279daf62011-03-23 14:04:31 -0700224 ssize_t rv;
Johannes Berg30686bf2015-06-02 21:39:54 +0200225 int i;
Ben Greear279daf62011-03-23 14:04:31 -0700226
Joe Perchesd15b8452011-08-29 14:17:31 -0700227 if (!buf)
Johannes Berg30686bf2015-06-02 21:39:54 +0200228 return -ENOMEM;
Joe Perchesd15b8452011-08-29 14:17:31 -0700229
Johannes Berg30686bf2015-06-02 21:39:54 +0200230 /* fail compilation if somebody adds or removes
231 * a flag without updating the name array above
232 */
Andrey Ryabinin68920c92016-01-20 15:00:51 -0800233 BUILD_BUG_ON(ARRAY_SIZE(hw_flag_names) != NUM_IEEE80211_HW_FLAGS);
Johannes Berg30686bf2015-06-02 21:39:54 +0200234
235 for (i = 0; i < NUM_IEEE80211_HW_FLAGS; i++) {
236 if (test_bit(i, local->hw.flags))
Mohammed Shafi Shajakhan4633dfc2015-10-08 19:20:14 +0530237 pos += scnprintf(pos, end - pos, "%s\n",
Johannes Berg30686bf2015-06-02 21:39:54 +0200238 hw_flag_names[i]);
239 }
Ben Greear279daf62011-03-23 14:04:31 -0700240
241 rv = simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
242 kfree(buf);
243 return rv;
244}
Benoit Papillault199d69f2010-02-04 22:00:20 +0100245
Johannes Bergdb2e6bd2009-06-14 17:37:39 +0200246static ssize_t queues_read(struct file *file, char __user *user_buf,
247 size_t count, loff_t *ppos)
248{
249 struct ieee80211_local *local = file->private_data;
250 unsigned long flags;
251 char buf[IEEE80211_MAX_QUEUES * 20];
252 int q, res = 0;
253
254 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
255 for (q = 0; q < local->hw.queues; q++)
256 res += sprintf(buf + res, "%02d: %#.8lx/%d\n", q,
257 local->queue_stop_reasons[q],
Johannes Berg3b8d81e02009-06-17 17:43:56 +0200258 skb_queue_len(&local->pending[q]));
Johannes Bergdb2e6bd2009-06-14 17:37:39 +0200259 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
260
261 return simple_read_from_buffer(user_buf, count, ppos, buf, res);
262}
263
Ben Greear279daf62011-03-23 14:04:31 -0700264DEBUGFS_READONLY_FILE_OPS(hwflags);
Ben Greear279daf62011-03-23 14:04:31 -0700265DEBUGFS_READONLY_FILE_OPS(queues);
Johannes Bergdb2e6bd2009-06-14 17:37:39 +0200266
Jiri Bence9f207f2007-05-05 11:46:38 -0700267/* statistics stuff */
268
Jiri Bence9f207f2007-05-05 11:46:38 -0700269static ssize_t format_devstat_counter(struct ieee80211_local *local,
270 char __user *userbuf,
271 size_t count, loff_t *ppos,
272 int (*printvalue)(struct ieee80211_low_level_stats *stats, char *buf,
273 int buflen))
274{
275 struct ieee80211_low_level_stats stats;
276 char buf[20];
277 int res;
278
Johannes Berg75636522008-07-09 14:40:35 +0200279 rtnl_lock();
Johannes Berg24487982009-04-23 18:52:52 +0200280 res = drv_get_stats(local, &stats);
Jiri Bence9f207f2007-05-05 11:46:38 -0700281 rtnl_unlock();
Johannes Berg24487982009-04-23 18:52:52 +0200282 if (res)
283 return res;
284 res = printvalue(&stats, buf, sizeof(buf));
Jiri Bence9f207f2007-05-05 11:46:38 -0700285 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
286}
287
288#define DEBUGFS_DEVSTATS_FILE(name) \
289static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\
290 char *buf, int buflen) \
291{ \
292 return scnprintf(buf, buflen, "%u\n", stats->name); \
293} \
294static ssize_t stats_ ##name## _read(struct file *file, \
295 char __user *userbuf, \
296 size_t count, loff_t *ppos) \
297{ \
298 return format_devstat_counter(file->private_data, \
299 userbuf, \
300 count, \
301 ppos, \
302 print_devstats_##name); \
303} \
304 \
305static const struct file_operations stats_ ##name## _ops = { \
306 .read = stats_ ##name## _read, \
Stephen Boyd234e3402012-04-05 14:25:11 -0700307 .open = simple_open, \
Arnd Bergmann2b18ab362010-07-06 19:05:31 +0200308 .llseek = generic_file_llseek, \
Jiri Bence9f207f2007-05-05 11:46:38 -0700309};
310
Johannes Bergf1160432015-04-22 20:25:20 +0200311#define DEBUGFS_STATS_ADD(name) \
312 debugfs_create_u32(#name, 0400, statsd, &local->name);
Felix Fietkau2826bcd2010-06-02 02:57:34 +0200313#define DEBUGFS_DEVSTATS_ADD(name) \
Johannes Berg7bcfaf22009-10-27 12:59:03 +0100314 debugfs_create_file(#name, 0400, statsd, local, &stats_ ##name## _ops);
Jiri Bence9f207f2007-05-05 11:46:38 -0700315
Jiri Bence9f207f2007-05-05 11:46:38 -0700316DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount);
317DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount);
318DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount);
319DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount);
320
Jiri Bence9f207f2007-05-05 11:46:38 -0700321void debugfs_hw_add(struct ieee80211_local *local)
322{
323 struct dentry *phyd = local->hw.wiphy->debugfsdir;
324 struct dentry *statsd;
325
326 if (!phyd)
327 return;
328
Jiri Bence9f207f2007-05-05 11:46:38 -0700329 local->debugfs.keys = debugfs_create_dir("keys", phyd);
330
Jiri Bence9f207f2007-05-05 11:46:38 -0700331 DEBUGFS_ADD(total_ps_buffered);
Jiri Bence9f207f2007-05-05 11:46:38 -0700332 DEBUGFS_ADD(wep_iv);
Johannes Bergdb2e6bd2009-06-14 17:37:39 +0200333 DEBUGFS_ADD(queues);
Johannes Berg2ad48142012-09-19 08:20:24 +0200334#ifdef CONFIG_PM
Johannes Berg827b1fb2009-03-13 11:44:18 +0100335 DEBUGFS_ADD_MODE(reset, 0200);
Johannes Berg2ad48142012-09-19 08:20:24 +0200336#endif
Ben Greear279daf62011-03-23 14:04:31 -0700337 DEBUGFS_ADD(hwflags);
Ben Greear83bdf2a2011-02-15 13:11:22 -0800338 DEBUGFS_ADD(user_power);
339 DEBUGFS_ADD(power);
Toke Høiland-Jørgensen8d51dbb2016-09-12 15:55:43 +0200340
341 if (local->ops->wake_tx_queue)
342 DEBUGFS_ADD_MODE(aqm, 0600);
Jiri Bence9f207f2007-05-05 11:46:38 -0700343
344 statsd = debugfs_create_dir("statistics", phyd);
Jiri Bence9f207f2007-05-05 11:46:38 -0700345
346 /* if the dir failed, don't put all the other things into the root! */
347 if (!statsd)
348 return;
349
Johannes Bergc206ca62015-04-22 20:47:28 +0200350#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
Johannes Bergf1160432015-04-22 20:25:20 +0200351 DEBUGFS_STATS_ADD(dot11TransmittedFragmentCount);
352 DEBUGFS_STATS_ADD(dot11MulticastTransmittedFrameCount);
353 DEBUGFS_STATS_ADD(dot11FailedCount);
354 DEBUGFS_STATS_ADD(dot11RetryCount);
355 DEBUGFS_STATS_ADD(dot11MultipleRetryCount);
356 DEBUGFS_STATS_ADD(dot11FrameDuplicateCount);
357 DEBUGFS_STATS_ADD(dot11ReceivedFragmentCount);
358 DEBUGFS_STATS_ADD(dot11MulticastReceivedFrameCount);
359 DEBUGFS_STATS_ADD(dot11TransmittedFrameCount);
Johannes Bergf1160432015-04-22 20:25:20 +0200360 DEBUGFS_STATS_ADD(tx_handlers_drop);
361 DEBUGFS_STATS_ADD(tx_handlers_queued);
362 DEBUGFS_STATS_ADD(tx_handlers_drop_wep);
363 DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc);
364 DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port);
365 DEBUGFS_STATS_ADD(rx_handlers_drop);
366 DEBUGFS_STATS_ADD(rx_handlers_queued);
367 DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc);
368 DEBUGFS_STATS_ADD(rx_handlers_drop_defrag);
Johannes Bergf1160432015-04-22 20:25:20 +0200369 DEBUGFS_STATS_ADD(tx_expand_skb_head);
370 DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned);
371 DEBUGFS_STATS_ADD(rx_expand_skb_head_defrag);
372 DEBUGFS_STATS_ADD(rx_handlers_fragments);
373 DEBUGFS_STATS_ADD(tx_status_drop);
Jiri Bence9f207f2007-05-05 11:46:38 -0700374#endif
Felix Fietkau2826bcd2010-06-02 02:57:34 +0200375 DEBUGFS_DEVSTATS_ADD(dot11ACKFailureCount);
376 DEBUGFS_DEVSTATS_ADD(dot11RTSFailureCount);
377 DEBUGFS_DEVSTATS_ADD(dot11FCSErrorCount);
378 DEBUGFS_DEVSTATS_ADD(dot11RTSSuccessCount);
Jiri Bence9f207f2007-05-05 11:46:38 -0700379}