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.
10 #include <linux/kernel.h>
11 #include <linux/device.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"
22 #include "debugfs_netdev.h"
24 static ssize_t
ieee80211_if_read(
25 struct ieee80211_sub_if_data
*sdata
,
27 size_t count
, loff_t
*ppos
,
28 ssize_t (*format
)(const struct ieee80211_sub_if_data
*, char *, int))
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
);
39 ret
= simple_read_from_buffer(userbuf
, count
, ppos
, buf
, 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, \
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) \
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, \
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) \
79 return ieee80211_if_read(file->private_data, \
80 userbuf, count, ppos, \
81 ieee80211_if_fmt_##name); \
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
);
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
);
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
);
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
);
155 #define DEBUGFS_ADD(name, type) \
156 debugfs_create_file(#name, 0400, sdata->debugfs.dir, \
159 static void add_sta_files(struct ieee80211_sub_if_data
*sdata
)
161 DEBUGFS_ADD(drop_unencrypted
, sta
);
162 DEBUGFS_ADD(force_unicast_rateidx
, sta
);
163 DEBUGFS_ADD(max_ratectrl_rateidx
, sta
);
165 DEBUGFS_ADD(bssid
, sta
);
166 DEBUGFS_ADD(aid
, sta
);
167 DEBUGFS_ADD(capab
, sta
);
170 static void add_ap_files(struct ieee80211_sub_if_data
*sdata
)
172 DEBUGFS_ADD(drop_unencrypted
, ap
);
173 DEBUGFS_ADD(force_unicast_rateidx
, ap
);
174 DEBUGFS_ADD(max_ratectrl_rateidx
, ap
);
176 DEBUGFS_ADD(num_sta_ps
, ap
);
177 DEBUGFS_ADD(dtim_count
, ap
);
178 DEBUGFS_ADD(num_buffered_multicast
, ap
);
181 static void add_wds_files(struct ieee80211_sub_if_data
*sdata
)
183 DEBUGFS_ADD(drop_unencrypted
, wds
);
184 DEBUGFS_ADD(force_unicast_rateidx
, wds
);
185 DEBUGFS_ADD(max_ratectrl_rateidx
, wds
);
187 DEBUGFS_ADD(peer
, wds
);
190 static void add_vlan_files(struct ieee80211_sub_if_data
*sdata
)
192 DEBUGFS_ADD(drop_unencrypted
, vlan
);
193 DEBUGFS_ADD(force_unicast_rateidx
, vlan
);
194 DEBUGFS_ADD(max_ratectrl_rateidx
, vlan
);
197 static void add_monitor_files(struct ieee80211_sub_if_data
*sdata
)
201 #ifdef CONFIG_MAC80211_MESH
203 static void add_mesh_stats(struct ieee80211_sub_if_data
*sdata
)
205 struct dentry
*dir
= debugfs_create_dir("mesh_stats",
208 #define MESHSTATS_ADD(name)\
209 debugfs_create_file(#name, 0400, dir, sdata, &name##_ops);
211 MESHSTATS_ADD(fwded_mcast
);
212 MESHSTATS_ADD(fwded_unicast
);
213 MESHSTATS_ADD(fwded_frames
);
214 MESHSTATS_ADD(dropped_frames_ttl
);
215 MESHSTATS_ADD(dropped_frames_no_route
);
216 MESHSTATS_ADD(estab_plinks
);
220 static void add_mesh_config(struct ieee80211_sub_if_data
*sdata
)
222 struct dentry
*dir
= debugfs_create_dir("mesh_config",
225 #define MESHPARAMS_ADD(name) \
226 debugfs_create_file(#name, 0600, dir, sdata, &name##_ops);
228 MESHPARAMS_ADD(dot11MeshMaxRetries
);
229 MESHPARAMS_ADD(dot11MeshRetryTimeout
);
230 MESHPARAMS_ADD(dot11MeshConfirmTimeout
);
231 MESHPARAMS_ADD(dot11MeshHoldingTimeout
);
232 MESHPARAMS_ADD(dot11MeshTTL
);
233 MESHPARAMS_ADD(auto_open_plinks
);
234 MESHPARAMS_ADD(dot11MeshMaxPeerLinks
);
235 MESHPARAMS_ADD(dot11MeshHWMPactivePathTimeout
);
236 MESHPARAMS_ADD(dot11MeshHWMPpreqMinInterval
);
237 MESHPARAMS_ADD(dot11MeshHWMPnetDiameterTraversalTime
);
238 MESHPARAMS_ADD(dot11MeshHWMPmaxPREQretries
);
239 MESHPARAMS_ADD(path_refresh_time
);
240 MESHPARAMS_ADD(min_discovery_timeout
);
242 #undef MESHPARAMS_ADD
246 static void add_files(struct ieee80211_sub_if_data
*sdata
)
248 if (!sdata
->debugfs
.dir
)
251 switch (sdata
->vif
.type
) {
252 case NL80211_IFTYPE_MESH_POINT
:
253 #ifdef CONFIG_MAC80211_MESH
254 add_mesh_stats(sdata
);
255 add_mesh_config(sdata
);
258 case NL80211_IFTYPE_STATION
:
259 add_sta_files(sdata
);
261 case NL80211_IFTYPE_ADHOC
:
264 case NL80211_IFTYPE_AP
:
267 case NL80211_IFTYPE_WDS
:
268 add_wds_files(sdata
);
270 case NL80211_IFTYPE_MONITOR
:
271 add_monitor_files(sdata
);
273 case NL80211_IFTYPE_AP_VLAN
:
274 add_vlan_files(sdata
);
281 static int notif_registered
;
283 void ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data
*sdata
)
285 char buf
[10+IFNAMSIZ
];
287 if (!notif_registered
)
290 sprintf(buf
, "netdev:%s", sdata
->dev
->name
);
291 sdata
->debugfs
.dir
= debugfs_create_dir(buf
,
292 sdata
->local
->hw
.wiphy
->debugfsdir
);
296 void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data
*sdata
)
298 if (!sdata
->debugfs
.dir
)
301 debugfs_remove_recursive(sdata
->debugfs
.dir
);
302 sdata
->debugfs
.dir
= NULL
;
305 static int netdev_notify(struct notifier_block
*nb
,
309 struct net_device
*dev
= ndev
;
311 struct ieee80211_sub_if_data
*sdata
;
312 char buf
[10+IFNAMSIZ
];
314 if (state
!= NETDEV_CHANGENAME
)
317 if (!dev
->ieee80211_ptr
|| !dev
->ieee80211_ptr
->wiphy
)
320 if (dev
->ieee80211_ptr
->wiphy
->privid
!= mac80211_wiphy_privid
)
323 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
325 dir
= sdata
->debugfs
.dir
;
330 sprintf(buf
, "netdev:%s", dev
->name
);
331 if (!debugfs_rename(dir
->d_parent
, dir
, dir
->d_parent
, buf
))
332 printk(KERN_ERR
"mac80211: debugfs: failed to rename debugfs "
338 static struct notifier_block mac80211_debugfs_netdev_notifier
= {
339 .notifier_call
= netdev_notify
,
342 void ieee80211_debugfs_netdev_init(void)
346 err
= register_netdevice_notifier(&mac80211_debugfs_netdev_notifier
);
349 "mac80211: failed to install netdev notifier,"
350 " disabling per-netdev debugfs!\n");
352 notif_registered
= 1;
355 void ieee80211_debugfs_netdev_exit(void)
357 unregister_netdevice_notifier(&mac80211_debugfs_netdev_notifier
);
358 notif_registered
= 0;