x86, mce, AMD: Fix leaving freed data in a list
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / net / mac80211 / debugfs_netdev.c
blob472b2039906c89dbd1081b6c8b2cabc2d8f79b55
1 /*
2 * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
3 * Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
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 */
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"
20 #include "rate.h"
21 #include "debugfs.h"
22 #include "debugfs_netdev.h"
24 static 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))
30 char buf[70];
31 ssize_t ret = -EINVAL;
33 read_lock(&dev_base_lock);
34 if (sdata->dev->reg_state == NETREG_REGISTERED)
35 ret = (*format)(sdata, buf, sizeof(buf));
36 read_unlock(&dev_base_lock);
38 if (ret != -EINVAL)
39 ret = simple_read_from_buffer(userbuf, count, ppos, buf, ret);
41 return ret;
44 #define IEEE80211_IF_FMT(name, field, format_string) \
45 static 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); \
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")
58 #define IEEE80211_IF_FMT_ATOMIC(name, field) \
59 static 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));\
66 #define IEEE80211_IF_FMT_MAC(name, field) \
67 static ssize_t ieee80211_if_fmt_##name( \
68 const struct ieee80211_sub_if_data *sdata, char *buf, \
69 int buflen) \
70 { \
71 return scnprintf(buf, buflen, "%pM\n", sdata->field); \
74 #define __IEEE80211_IF_FILE(name) \
75 static 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 } \
83 static const struct file_operations name##_ops = { \
84 .read = ieee80211_if_read_##name, \
85 .open = mac80211_open_file_generic, \
88 #define IEEE80211_IF_FILE(name, field, format) \
89 IEEE80211_IF_FMT_##format(name, field) \
90 __IEEE80211_IF_FILE(name)
92 /* common attributes */
93 IEEE80211_IF_FILE(drop_unencrypted, drop_unencrypted, DEC);
94 IEEE80211_IF_FILE(force_unicast_rateidx, force_unicast_rateidx, DEC);
95 IEEE80211_IF_FILE(max_ratectrl_rateidx, max_ratectrl_rateidx, DEC);
97 /* STA attributes */
98 IEEE80211_IF_FILE(bssid, u.mgd.bssid, MAC);
99 IEEE80211_IF_FILE(aid, u.mgd.aid, DEC);
100 IEEE80211_IF_FILE(capab, u.mgd.capab, HEX);
102 /* AP attributes */
103 IEEE80211_IF_FILE(num_sta_ps, u.ap.num_sta_ps, ATOMIC);
104 IEEE80211_IF_FILE(dtim_count, u.ap.dtim_count, DEC);
106 static ssize_t ieee80211_if_fmt_num_buffered_multicast(
107 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
109 return scnprintf(buf, buflen, "%u\n",
110 skb_queue_len(&sdata->u.ap.ps_bc_buf));
112 __IEEE80211_IF_FILE(num_buffered_multicast);
114 /* WDS attributes */
115 IEEE80211_IF_FILE(peer, u.wds.remote_addr, MAC);
117 #ifdef CONFIG_MAC80211_MESH
118 /* Mesh stats attributes */
119 IEEE80211_IF_FILE(fwded_mcast, u.mesh.mshstats.fwded_mcast, DEC);
120 IEEE80211_IF_FILE(fwded_unicast, u.mesh.mshstats.fwded_unicast, DEC);
121 IEEE80211_IF_FILE(fwded_frames, u.mesh.mshstats.fwded_frames, DEC);
122 IEEE80211_IF_FILE(dropped_frames_ttl, u.mesh.mshstats.dropped_frames_ttl, DEC);
123 IEEE80211_IF_FILE(dropped_frames_no_route,
124 u.mesh.mshstats.dropped_frames_no_route, DEC);
125 IEEE80211_IF_FILE(estab_plinks, u.mesh.mshstats.estab_plinks, ATOMIC);
127 /* Mesh parameters */
128 IEEE80211_IF_FILE(dot11MeshMaxRetries,
129 u.mesh.mshcfg.dot11MeshMaxRetries, DEC);
130 IEEE80211_IF_FILE(dot11MeshRetryTimeout,
131 u.mesh.mshcfg.dot11MeshRetryTimeout, DEC);
132 IEEE80211_IF_FILE(dot11MeshConfirmTimeout,
133 u.mesh.mshcfg.dot11MeshConfirmTimeout, DEC);
134 IEEE80211_IF_FILE(dot11MeshHoldingTimeout,
135 u.mesh.mshcfg.dot11MeshHoldingTimeout, DEC);
136 IEEE80211_IF_FILE(dot11MeshTTL, u.mesh.mshcfg.dot11MeshTTL, DEC);
137 IEEE80211_IF_FILE(auto_open_plinks, u.mesh.mshcfg.auto_open_plinks, DEC);
138 IEEE80211_IF_FILE(dot11MeshMaxPeerLinks,
139 u.mesh.mshcfg.dot11MeshMaxPeerLinks, DEC);
140 IEEE80211_IF_FILE(dot11MeshHWMPactivePathTimeout,
141 u.mesh.mshcfg.dot11MeshHWMPactivePathTimeout, DEC);
142 IEEE80211_IF_FILE(dot11MeshHWMPpreqMinInterval,
143 u.mesh.mshcfg.dot11MeshHWMPpreqMinInterval, DEC);
144 IEEE80211_IF_FILE(dot11MeshHWMPnetDiameterTraversalTime,
145 u.mesh.mshcfg.dot11MeshHWMPnetDiameterTraversalTime, DEC);
146 IEEE80211_IF_FILE(dot11MeshHWMPmaxPREQretries,
147 u.mesh.mshcfg.dot11MeshHWMPmaxPREQretries, DEC);
148 IEEE80211_IF_FILE(path_refresh_time,
149 u.mesh.mshcfg.path_refresh_time, DEC);
150 IEEE80211_IF_FILE(min_discovery_timeout,
151 u.mesh.mshcfg.min_discovery_timeout, DEC);
152 IEEE80211_IF_FILE(dot11MeshHWMPRootMode,
153 u.mesh.mshcfg.dot11MeshHWMPRootMode, DEC);
154 #endif
157 #define DEBUGFS_ADD(name, type) \
158 debugfs_create_file(#name, 0400, sdata->debugfs.dir, \
159 sdata, &name##_ops);
161 static void add_sta_files(struct ieee80211_sub_if_data *sdata)
163 DEBUGFS_ADD(drop_unencrypted, sta);
164 DEBUGFS_ADD(force_unicast_rateidx, sta);
165 DEBUGFS_ADD(max_ratectrl_rateidx, sta);
167 DEBUGFS_ADD(bssid, sta);
168 DEBUGFS_ADD(aid, sta);
169 DEBUGFS_ADD(capab, sta);
172 static void add_ap_files(struct ieee80211_sub_if_data *sdata)
174 DEBUGFS_ADD(drop_unencrypted, ap);
175 DEBUGFS_ADD(force_unicast_rateidx, ap);
176 DEBUGFS_ADD(max_ratectrl_rateidx, ap);
178 DEBUGFS_ADD(num_sta_ps, ap);
179 DEBUGFS_ADD(dtim_count, ap);
180 DEBUGFS_ADD(num_buffered_multicast, ap);
183 static void add_wds_files(struct ieee80211_sub_if_data *sdata)
185 DEBUGFS_ADD(drop_unencrypted, wds);
186 DEBUGFS_ADD(force_unicast_rateidx, wds);
187 DEBUGFS_ADD(max_ratectrl_rateidx, wds);
189 DEBUGFS_ADD(peer, wds);
192 static void add_vlan_files(struct ieee80211_sub_if_data *sdata)
194 DEBUGFS_ADD(drop_unencrypted, vlan);
195 DEBUGFS_ADD(force_unicast_rateidx, vlan);
196 DEBUGFS_ADD(max_ratectrl_rateidx, vlan);
199 static void add_monitor_files(struct ieee80211_sub_if_data *sdata)
203 #ifdef CONFIG_MAC80211_MESH
205 static void add_mesh_stats(struct ieee80211_sub_if_data *sdata)
207 struct dentry *dir = debugfs_create_dir("mesh_stats",
208 sdata->debugfs.dir);
210 #define MESHSTATS_ADD(name)\
211 debugfs_create_file(#name, 0400, dir, sdata, &name##_ops);
213 MESHSTATS_ADD(fwded_mcast);
214 MESHSTATS_ADD(fwded_unicast);
215 MESHSTATS_ADD(fwded_frames);
216 MESHSTATS_ADD(dropped_frames_ttl);
217 MESHSTATS_ADD(dropped_frames_no_route);
218 MESHSTATS_ADD(estab_plinks);
219 #undef MESHSTATS_ADD
222 static void add_mesh_config(struct ieee80211_sub_if_data *sdata)
224 struct dentry *dir = debugfs_create_dir("mesh_config",
225 sdata->debugfs.dir);
227 #define MESHPARAMS_ADD(name) \
228 debugfs_create_file(#name, 0600, dir, sdata, &name##_ops);
230 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);
244 #undef MESHPARAMS_ADD
246 #endif
248 static void add_files(struct ieee80211_sub_if_data *sdata)
250 if (!sdata->debugfs.dir)
251 return;
253 switch (sdata->vif.type) {
254 case NL80211_IFTYPE_MESH_POINT:
255 #ifdef CONFIG_MAC80211_MESH
256 add_mesh_stats(sdata);
257 add_mesh_config(sdata);
258 #endif
259 break;
260 case NL80211_IFTYPE_STATION:
261 add_sta_files(sdata);
262 break;
263 case NL80211_IFTYPE_ADHOC:
264 /* XXX */
265 break;
266 case NL80211_IFTYPE_AP:
267 add_ap_files(sdata);
268 break;
269 case NL80211_IFTYPE_WDS:
270 add_wds_files(sdata);
271 break;
272 case NL80211_IFTYPE_MONITOR:
273 add_monitor_files(sdata);
274 break;
275 case NL80211_IFTYPE_AP_VLAN:
276 add_vlan_files(sdata);
277 break;
278 default:
279 break;
283 static int notif_registered;
285 void ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data *sdata)
287 char buf[10+IFNAMSIZ];
289 if (!notif_registered)
290 return;
292 sprintf(buf, "netdev:%s", sdata->dev->name);
293 sdata->debugfs.dir = debugfs_create_dir(buf,
294 sdata->local->hw.wiphy->debugfsdir);
295 add_files(sdata);
298 void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data *sdata)
300 if (!sdata->debugfs.dir)
301 return;
303 debugfs_remove_recursive(sdata->debugfs.dir);
304 sdata->debugfs.dir = NULL;
307 static int netdev_notify(struct notifier_block *nb,
308 unsigned long state,
309 void *ndev)
311 struct net_device *dev = ndev;
312 struct dentry *dir;
313 struct ieee80211_sub_if_data *sdata;
314 char buf[10+IFNAMSIZ];
316 if (state != NETDEV_CHANGENAME)
317 return 0;
319 if (!dev->ieee80211_ptr || !dev->ieee80211_ptr->wiphy)
320 return 0;
322 if (dev->ieee80211_ptr->wiphy->privid != mac80211_wiphy_privid)
323 return 0;
325 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
327 dir = sdata->debugfs.dir;
329 if (!dir)
330 return 0;
332 sprintf(buf, "netdev:%s", dev->name);
333 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);
337 return 0;
340 static struct notifier_block mac80211_debugfs_netdev_notifier = {
341 .notifier_call = netdev_notify,
344 void ieee80211_debugfs_netdev_init(void)
346 int err;
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;
357 void ieee80211_debugfs_netdev_exit(void)
359 unregister_netdevice_notifier(&mac80211_debugfs_netdev_notifier);
360 notif_registered = 0;