blob: 472b2039906c89dbd1081b6c8b2cabc2d8f79b55 [file] [log] [blame]
Jiri Bence9f207f2007-05-05 11:46:38 -07001/*
2 * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
3 * Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 */
9
10#include <linux/kernel.h>
11#include <linux/device.h>
12#include <linux/if.h>
13#include <linux/interrupt.h>
14#include <linux/netdevice.h>
15#include <linux/rtnetlink.h>
16#include <linux/notifier.h>
17#include <net/mac80211.h>
18#include <net/cfg80211.h>
19#include "ieee80211_i.h"
Johannes Berg2c8dccc2008-04-08 15:14:40 -040020#include "rate.h"
Jiri Bence9f207f2007-05-05 11:46:38 -070021#include "debugfs.h"
22#include "debugfs_netdev.h"
23
24static ssize_t ieee80211_if_read(
25 struct ieee80211_sub_if_data *sdata,
26 char __user *userbuf,
27 size_t count, loff_t *ppos,
28 ssize_t (*format)(const struct ieee80211_sub_if_data *, char *, int))
29{
30 char buf[70];
31 ssize_t ret = -EINVAL;
32
33 read_lock(&dev_base_lock);
Luis Carlos Cobo73bb3e42008-03-31 15:10:22 -070034 if (sdata->dev->reg_state == NETREG_REGISTERED)
Jiri Bence9f207f2007-05-05 11:46:38 -070035 ret = (*format)(sdata, buf, sizeof(buf));
Jiri Bence9f207f2007-05-05 11:46:38 -070036 read_unlock(&dev_base_lock);
Luis Carlos Cobo73bb3e42008-03-31 15:10:22 -070037
38 if (ret != -EINVAL)
39 ret = simple_read_from_buffer(userbuf, count, ppos, buf, ret);
40
Jiri Bence9f207f2007-05-05 11:46:38 -070041 return ret;
42}
43
44#define IEEE80211_IF_FMT(name, field, format_string) \
45static ssize_t ieee80211_if_fmt_##name( \
46 const struct ieee80211_sub_if_data *sdata, char *buf, \
47 int buflen) \
48{ \
49 return scnprintf(buf, buflen, format_string, sdata->field); \
50}
51#define IEEE80211_IF_FMT_DEC(name, field) \
52 IEEE80211_IF_FMT(name, field, "%d\n")
53#define IEEE80211_IF_FMT_HEX(name, field) \
54 IEEE80211_IF_FMT(name, field, "%#x\n")
55#define IEEE80211_IF_FMT_SIZE(name, field) \
56 IEEE80211_IF_FMT(name, field, "%zd\n")
57
58#define IEEE80211_IF_FMT_ATOMIC(name, field) \
59static ssize_t ieee80211_if_fmt_##name( \
60 const struct ieee80211_sub_if_data *sdata, \
61 char *buf, int buflen) \
62{ \
63 return scnprintf(buf, buflen, "%d\n", atomic_read(&sdata->field));\
64}
65
66#define IEEE80211_IF_FMT_MAC(name, field) \
67static ssize_t ieee80211_if_fmt_##name( \
68 const struct ieee80211_sub_if_data *sdata, char *buf, \
69 int buflen) \
70{ \
Johannes Berg0c68ae262008-10-27 15:56:10 -070071 return scnprintf(buf, buflen, "%pM\n", sdata->field); \
Jiri Bence9f207f2007-05-05 11:46:38 -070072}
73
74#define __IEEE80211_IF_FILE(name) \
75static ssize_t ieee80211_if_read_##name(struct file *file, \
76 char __user *userbuf, \
77 size_t count, loff_t *ppos) \
78{ \
79 return ieee80211_if_read(file->private_data, \
80 userbuf, count, ppos, \
81 ieee80211_if_fmt_##name); \
82} \
83static const struct file_operations name##_ops = { \
84 .read = ieee80211_if_read_##name, \
85 .open = mac80211_open_file_generic, \
86}
87
88#define IEEE80211_IF_FILE(name, field, format) \
89 IEEE80211_IF_FMT_##format(name, field) \
90 __IEEE80211_IF_FILE(name)
91
92/* common attributes */
Jiri Bence9f207f2007-05-05 11:46:38 -070093IEEE80211_IF_FILE(drop_unencrypted, drop_unencrypted, DEC);
Johannes Berg3e122be2008-07-09 14:40:34 +020094IEEE80211_IF_FILE(force_unicast_rateidx, force_unicast_rateidx, DEC);
95IEEE80211_IF_FILE(max_ratectrl_rateidx, max_ratectrl_rateidx, DEC);
Jiri Bence9f207f2007-05-05 11:46:38 -070096
Johannes Berg46900292009-02-15 12:44:28 +010097/* STA attributes */
Johannes Berg46900292009-02-15 12:44:28 +010098IEEE80211_IF_FILE(bssid, u.mgd.bssid, MAC);
Johannes Berg46900292009-02-15 12:44:28 +010099IEEE80211_IF_FILE(aid, u.mgd.aid, DEC);
Johannes Berg46900292009-02-15 12:44:28 +0100100IEEE80211_IF_FILE(capab, u.mgd.capab, HEX);
Jiri Bence9f207f2007-05-05 11:46:38 -0700101
102/* AP attributes */
103IEEE80211_IF_FILE(num_sta_ps, u.ap.num_sta_ps, ATOMIC);
Jiri Bence9f207f2007-05-05 11:46:38 -0700104IEEE80211_IF_FILE(dtim_count, u.ap.dtim_count, DEC);
Jiri Bence9f207f2007-05-05 11:46:38 -0700105
106static ssize_t ieee80211_if_fmt_num_buffered_multicast(
107 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
108{
109 return scnprintf(buf, buflen, "%u\n",
110 skb_queue_len(&sdata->u.ap.ps_bc_buf));
111}
112__IEEE80211_IF_FILE(num_buffered_multicast);
113
Jiri Bence9f207f2007-05-05 11:46:38 -0700114/* WDS attributes */
115IEEE80211_IF_FILE(peer, u.wds.remote_addr, MAC);
116
Luis Carlos Cobo9f42f602008-02-23 15:17:16 +0100117#ifdef CONFIG_MAC80211_MESH
118/* Mesh stats attributes */
Daniel Walkerc8a61a72009-08-18 10:59:00 -0700119IEEE80211_IF_FILE(fwded_mcast, u.mesh.mshstats.fwded_mcast, DEC);
120IEEE80211_IF_FILE(fwded_unicast, u.mesh.mshstats.fwded_unicast, DEC);
Johannes Berg472dbc42008-09-11 00:01:49 +0200121IEEE80211_IF_FILE(fwded_frames, u.mesh.mshstats.fwded_frames, DEC);
122IEEE80211_IF_FILE(dropped_frames_ttl, u.mesh.mshstats.dropped_frames_ttl, DEC);
Luis Carlos Cobo9f42f602008-02-23 15:17:16 +0100123IEEE80211_IF_FILE(dropped_frames_no_route,
Johannes Berg472dbc42008-09-11 00:01:49 +0200124 u.mesh.mshstats.dropped_frames_no_route, DEC);
125IEEE80211_IF_FILE(estab_plinks, u.mesh.mshstats.estab_plinks, ATOMIC);
Luis Carlos Cobo9f42f602008-02-23 15:17:16 +0100126
127/* Mesh parameters */
Johannes Berg36ff3822008-10-07 12:04:31 +0200128IEEE80211_IF_FILE(dot11MeshMaxRetries,
129 u.mesh.mshcfg.dot11MeshMaxRetries, DEC);
130IEEE80211_IF_FILE(dot11MeshRetryTimeout,
131 u.mesh.mshcfg.dot11MeshRetryTimeout, DEC);
132IEEE80211_IF_FILE(dot11MeshConfirmTimeout,
133 u.mesh.mshcfg.dot11MeshConfirmTimeout, DEC);
134IEEE80211_IF_FILE(dot11MeshHoldingTimeout,
135 u.mesh.mshcfg.dot11MeshHoldingTimeout, DEC);
136IEEE80211_IF_FILE(dot11MeshTTL, u.mesh.mshcfg.dot11MeshTTL, DEC);
137IEEE80211_IF_FILE(auto_open_plinks, u.mesh.mshcfg.auto_open_plinks, DEC);
138IEEE80211_IF_FILE(dot11MeshMaxPeerLinks,
139 u.mesh.mshcfg.dot11MeshMaxPeerLinks, DEC);
140IEEE80211_IF_FILE(dot11MeshHWMPactivePathTimeout,
141 u.mesh.mshcfg.dot11MeshHWMPactivePathTimeout, DEC);
142IEEE80211_IF_FILE(dot11MeshHWMPpreqMinInterval,
143 u.mesh.mshcfg.dot11MeshHWMPpreqMinInterval, DEC);
144IEEE80211_IF_FILE(dot11MeshHWMPnetDiameterTraversalTime,
145 u.mesh.mshcfg.dot11MeshHWMPnetDiameterTraversalTime, DEC);
146IEEE80211_IF_FILE(dot11MeshHWMPmaxPREQretries,
147 u.mesh.mshcfg.dot11MeshHWMPmaxPREQretries, DEC);
148IEEE80211_IF_FILE(path_refresh_time,
149 u.mesh.mshcfg.path_refresh_time, DEC);
150IEEE80211_IF_FILE(min_discovery_timeout,
151 u.mesh.mshcfg.min_discovery_timeout, DEC);
Rui Paulo63c57232009-11-09 23:46:57 +0000152IEEE80211_IF_FILE(dot11MeshHWMPRootMode,
153 u.mesh.mshcfg.dot11MeshHWMPRootMode, DEC);
Luis Carlos Cobo9f42f602008-02-23 15:17:16 +0100154#endif
155
156
Johannes Berg7bcfaf22009-10-27 12:59:03 +0100157#define DEBUGFS_ADD(name, type) \
158 debugfs_create_file(#name, 0400, sdata->debugfs.dir, \
159 sdata, &name##_ops);
Jiri Bence9f207f2007-05-05 11:46:38 -0700160
161static void add_sta_files(struct ieee80211_sub_if_data *sdata)
162{
Jiri Bence9f207f2007-05-05 11:46:38 -0700163 DEBUGFS_ADD(drop_unencrypted, sta);
Jouni Malinen93015f02008-08-25 11:57:06 +0300164 DEBUGFS_ADD(force_unicast_rateidx, sta);
165 DEBUGFS_ADD(max_ratectrl_rateidx, sta);
Johannes Berg3e122be2008-07-09 14:40:34 +0200166
Jiri Bence9f207f2007-05-05 11:46:38 -0700167 DEBUGFS_ADD(bssid, sta);
Jiri Bence9f207f2007-05-05 11:46:38 -0700168 DEBUGFS_ADD(aid, sta);
Jiri Bence9f207f2007-05-05 11:46:38 -0700169 DEBUGFS_ADD(capab, sta);
Jiri Bence9f207f2007-05-05 11:46:38 -0700170}
171
172static void add_ap_files(struct ieee80211_sub_if_data *sdata)
173{
Jiri Bence9f207f2007-05-05 11:46:38 -0700174 DEBUGFS_ADD(drop_unencrypted, ap);
Johannes Berg3e122be2008-07-09 14:40:34 +0200175 DEBUGFS_ADD(force_unicast_rateidx, ap);
176 DEBUGFS_ADD(max_ratectrl_rateidx, ap);
177
Jiri Bence9f207f2007-05-05 11:46:38 -0700178 DEBUGFS_ADD(num_sta_ps, ap);
Jiri Bence9f207f2007-05-05 11:46:38 -0700179 DEBUGFS_ADD(dtim_count, ap);
Jiri Bence9f207f2007-05-05 11:46:38 -0700180 DEBUGFS_ADD(num_buffered_multicast, ap);
Jiri Bence9f207f2007-05-05 11:46:38 -0700181}
182
183static void add_wds_files(struct ieee80211_sub_if_data *sdata)
184{
Jiri Bence9f207f2007-05-05 11:46:38 -0700185 DEBUGFS_ADD(drop_unencrypted, wds);
Jouni Malinen93015f02008-08-25 11:57:06 +0300186 DEBUGFS_ADD(force_unicast_rateidx, wds);
187 DEBUGFS_ADD(max_ratectrl_rateidx, wds);
Johannes Berg3e122be2008-07-09 14:40:34 +0200188
Jiri Bence9f207f2007-05-05 11:46:38 -0700189 DEBUGFS_ADD(peer, wds);
190}
191
192static void add_vlan_files(struct ieee80211_sub_if_data *sdata)
193{
Jiri Bence9f207f2007-05-05 11:46:38 -0700194 DEBUGFS_ADD(drop_unencrypted, vlan);
Jouni Malinen93015f02008-08-25 11:57:06 +0300195 DEBUGFS_ADD(force_unicast_rateidx, vlan);
196 DEBUGFS_ADD(max_ratectrl_rateidx, vlan);
Jiri Bence9f207f2007-05-05 11:46:38 -0700197}
198
199static void add_monitor_files(struct ieee80211_sub_if_data *sdata)
200{
Jiri Bence9f207f2007-05-05 11:46:38 -0700201}
202
Luis Carlos Cobo9f42f602008-02-23 15:17:16 +0100203#ifdef CONFIG_MAC80211_MESH
Luis Carlos Cobo9f42f602008-02-23 15:17:16 +0100204
205static void add_mesh_stats(struct ieee80211_sub_if_data *sdata)
206{
Johannes Berg7bcfaf22009-10-27 12:59:03 +0100207 struct dentry *dir = debugfs_create_dir("mesh_stats",
208 sdata->debugfs.dir);
209
210#define MESHSTATS_ADD(name)\
211 debugfs_create_file(#name, 0400, dir, sdata, &name##_ops);
212
Daniel Walkerc8a61a72009-08-18 10:59:00 -0700213 MESHSTATS_ADD(fwded_mcast);
214 MESHSTATS_ADD(fwded_unicast);
Luis Carlos Cobo9f42f602008-02-23 15:17:16 +0100215 MESHSTATS_ADD(fwded_frames);
216 MESHSTATS_ADD(dropped_frames_ttl);
217 MESHSTATS_ADD(dropped_frames_no_route);
218 MESHSTATS_ADD(estab_plinks);
Johannes Berg7bcfaf22009-10-27 12:59:03 +0100219#undef MESHSTATS_ADD
Luis Carlos Cobo9f42f602008-02-23 15:17:16 +0100220}
221
Luis Carlos Cobo9f42f602008-02-23 15:17:16 +0100222static void add_mesh_config(struct ieee80211_sub_if_data *sdata)
223{
Johannes Berg7bcfaf22009-10-27 12:59:03 +0100224 struct dentry *dir = debugfs_create_dir("mesh_config",
225 sdata->debugfs.dir);
226
227#define MESHPARAMS_ADD(name) \
228 debugfs_create_file(#name, 0600, dir, sdata, &name##_ops);
229
Luis Carlos Cobo9f42f602008-02-23 15:17:16 +0100230 MESHPARAMS_ADD(dot11MeshMaxRetries);
231 MESHPARAMS_ADD(dot11MeshRetryTimeout);
232 MESHPARAMS_ADD(dot11MeshConfirmTimeout);
233 MESHPARAMS_ADD(dot11MeshHoldingTimeout);
234 MESHPARAMS_ADD(dot11MeshTTL);
235 MESHPARAMS_ADD(auto_open_plinks);
236 MESHPARAMS_ADD(dot11MeshMaxPeerLinks);
237 MESHPARAMS_ADD(dot11MeshHWMPactivePathTimeout);
238 MESHPARAMS_ADD(dot11MeshHWMPpreqMinInterval);
239 MESHPARAMS_ADD(dot11MeshHWMPnetDiameterTraversalTime);
240 MESHPARAMS_ADD(dot11MeshHWMPmaxPREQretries);
241 MESHPARAMS_ADD(path_refresh_time);
242 MESHPARAMS_ADD(min_discovery_timeout);
Johannes Berg7bcfaf22009-10-27 12:59:03 +0100243
244#undef MESHPARAMS_ADD
Luis Carlos Cobo9f42f602008-02-23 15:17:16 +0100245}
246#endif
247
Jiri Bence9f207f2007-05-05 11:46:38 -0700248static void add_files(struct ieee80211_sub_if_data *sdata)
249{
Johannes Berg7bcfaf22009-10-27 12:59:03 +0100250 if (!sdata->debugfs.dir)
Jiri Bence9f207f2007-05-05 11:46:38 -0700251 return;
252
Johannes Berg51fb61e2007-12-19 01:31:27 +0100253 switch (sdata->vif.type) {
Johannes Berg05c914f2008-09-11 00:01:58 +0200254 case NL80211_IFTYPE_MESH_POINT:
Luis Carlos Cobo9f42f602008-02-23 15:17:16 +0100255#ifdef CONFIG_MAC80211_MESH
256 add_mesh_stats(sdata);
257 add_mesh_config(sdata);
258#endif
Johannes Berg472dbc42008-09-11 00:01:49 +0200259 break;
Johannes Berg05c914f2008-09-11 00:01:58 +0200260 case NL80211_IFTYPE_STATION:
Jiri Bence9f207f2007-05-05 11:46:38 -0700261 add_sta_files(sdata);
262 break;
Johannes Berg46900292009-02-15 12:44:28 +0100263 case NL80211_IFTYPE_ADHOC:
264 /* XXX */
265 break;
Johannes Berg05c914f2008-09-11 00:01:58 +0200266 case NL80211_IFTYPE_AP:
Jiri Bence9f207f2007-05-05 11:46:38 -0700267 add_ap_files(sdata);
268 break;
Johannes Berg05c914f2008-09-11 00:01:58 +0200269 case NL80211_IFTYPE_WDS:
Jiri Bence9f207f2007-05-05 11:46:38 -0700270 add_wds_files(sdata);
271 break;
Johannes Berg05c914f2008-09-11 00:01:58 +0200272 case NL80211_IFTYPE_MONITOR:
Jiri Bence9f207f2007-05-05 11:46:38 -0700273 add_monitor_files(sdata);
274 break;
Johannes Berg05c914f2008-09-11 00:01:58 +0200275 case NL80211_IFTYPE_AP_VLAN:
Jiri Bence9f207f2007-05-05 11:46:38 -0700276 add_vlan_files(sdata);
277 break;
278 default:
279 break;
280 }
281}
282
Jiri Bence9f207f2007-05-05 11:46:38 -0700283static int notif_registered;
284
285void ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data *sdata)
286{
287 char buf[10+IFNAMSIZ];
288
289 if (!notif_registered)
290 return;
291
292 sprintf(buf, "netdev:%s", sdata->dev->name);
Johannes Berg7bcfaf22009-10-27 12:59:03 +0100293 sdata->debugfs.dir = debugfs_create_dir(buf,
Jiri Bence9f207f2007-05-05 11:46:38 -0700294 sdata->local->hw.wiphy->debugfsdir);
Johannes Berg75636522008-07-09 14:40:35 +0200295 add_files(sdata);
Jiri Bence9f207f2007-05-05 11:46:38 -0700296}
297
298void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data *sdata)
299{
Johannes Berg7bcfaf22009-10-27 12:59:03 +0100300 if (!sdata->debugfs.dir)
301 return;
302
303 debugfs_remove_recursive(sdata->debugfs.dir);
304 sdata->debugfs.dir = NULL;
Jiri Bence9f207f2007-05-05 11:46:38 -0700305}
306
Johannes Berg988c0f72008-04-17 19:21:22 +0200307static int netdev_notify(struct notifier_block *nb,
Jiri Bence9f207f2007-05-05 11:46:38 -0700308 unsigned long state,
309 void *ndev)
310{
311 struct net_device *dev = ndev;
Johannes Berg7c8081e2007-06-21 18:30:19 +0200312 struct dentry *dir;
Johannes Berg3e122be2008-07-09 14:40:34 +0200313 struct ieee80211_sub_if_data *sdata;
Jiri Bence9f207f2007-05-05 11:46:38 -0700314 char buf[10+IFNAMSIZ];
315
316 if (state != NETDEV_CHANGENAME)
317 return 0;
318
319 if (!dev->ieee80211_ptr || !dev->ieee80211_ptr->wiphy)
320 return 0;
321
322 if (dev->ieee80211_ptr->wiphy->privid != mac80211_wiphy_privid)
323 return 0;
324
Johannes Berg3e122be2008-07-09 14:40:34 +0200325 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
326
Johannes Berg7bcfaf22009-10-27 12:59:03 +0100327 dir = sdata->debugfs.dir;
Johannes Bergc74e90a2008-10-08 10:18:36 +0200328
329 if (!dir)
330 return 0;
331
332 sprintf(buf, "netdev:%s", dev->name);
Johannes Berg7c8081e2007-06-21 18:30:19 +0200333 if (!debugfs_rename(dir->d_parent, dir, dir->d_parent, buf))
334 printk(KERN_ERR "mac80211: debugfs: failed to rename debugfs "
335 "dir to %s\n", buf);
Jiri Bence9f207f2007-05-05 11:46:38 -0700336
337 return 0;
338}
339
340static struct notifier_block mac80211_debugfs_netdev_notifier = {
341 .notifier_call = netdev_notify,
342};
343
344void ieee80211_debugfs_netdev_init(void)
345{
346 int err;
347
348 err = register_netdevice_notifier(&mac80211_debugfs_netdev_notifier);
349 if (err) {
350 printk(KERN_ERR
351 "mac80211: failed to install netdev notifier,"
352 " disabling per-netdev debugfs!\n");
353 } else
354 notif_registered = 1;
355}
356
357void ieee80211_debugfs_netdev_exit(void)
358{
359 unregister_netdevice_notifier(&mac80211_debugfs_netdev_notifier);
360 notif_registered = 0;
361}