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"
20 #include "ieee80211_rate.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 ret
= simple_read_from_buffer(userbuf
, count
, ppos
, buf
, ret
);
38 read_unlock(&dev_base_lock
);
42 #define IEEE80211_IF_FMT(name, field, format_string) \
43 static ssize_t ieee80211_if_fmt_##name( \
44 const struct ieee80211_sub_if_data *sdata, char *buf, \
47 return scnprintf(buf, buflen, format_string, sdata->field); \
49 #define IEEE80211_IF_FMT_DEC(name, field) \
50 IEEE80211_IF_FMT(name, field, "%d\n")
51 #define IEEE80211_IF_FMT_HEX(name, field) \
52 IEEE80211_IF_FMT(name, field, "%#x\n")
53 #define IEEE80211_IF_FMT_SIZE(name, field) \
54 IEEE80211_IF_FMT(name, field, "%zd\n")
56 #define IEEE80211_IF_FMT_ATOMIC(name, field) \
57 static ssize_t ieee80211_if_fmt_##name( \
58 const struct ieee80211_sub_if_data *sdata, \
59 char *buf, int buflen) \
61 return scnprintf(buf, buflen, "%d\n", atomic_read(&sdata->field));\
64 #define IEEE80211_IF_FMT_MAC(name, field) \
65 static ssize_t ieee80211_if_fmt_##name( \
66 const struct ieee80211_sub_if_data *sdata, char *buf, \
69 DECLARE_MAC_BUF(mac); \
70 return scnprintf(buf, buflen, "%s\n", print_mac(mac, sdata->field));\
73 #define __IEEE80211_IF_FILE(name) \
74 static ssize_t ieee80211_if_read_##name(struct file *file, \
75 char __user *userbuf, \
76 size_t count, loff_t *ppos) \
78 return ieee80211_if_read(file->private_data, \
79 userbuf, count, ppos, \
80 ieee80211_if_fmt_##name); \
82 static const struct file_operations name##_ops = { \
83 .read = ieee80211_if_read_##name, \
84 .open = mac80211_open_file_generic, \
87 #define IEEE80211_IF_FILE(name, field, format) \
88 IEEE80211_IF_FMT_##format(name, field) \
89 __IEEE80211_IF_FILE(name)
91 /* common attributes */
92 IEEE80211_IF_FILE(channel_use
, channel_use
, DEC
);
93 IEEE80211_IF_FILE(drop_unencrypted
, drop_unencrypted
, DEC
);
95 /* STA/IBSS attributes */
96 IEEE80211_IF_FILE(state
, u
.sta
.state
, DEC
);
97 IEEE80211_IF_FILE(bssid
, u
.sta
.bssid
, MAC
);
98 IEEE80211_IF_FILE(prev_bssid
, u
.sta
.prev_bssid
, MAC
);
99 IEEE80211_IF_FILE(ssid_len
, u
.sta
.ssid_len
, SIZE
);
100 IEEE80211_IF_FILE(aid
, u
.sta
.aid
, DEC
);
101 IEEE80211_IF_FILE(ap_capab
, u
.sta
.ap_capab
, HEX
);
102 IEEE80211_IF_FILE(capab
, u
.sta
.capab
, HEX
);
103 IEEE80211_IF_FILE(extra_ie_len
, u
.sta
.extra_ie_len
, SIZE
);
104 IEEE80211_IF_FILE(auth_tries
, u
.sta
.auth_tries
, DEC
);
105 IEEE80211_IF_FILE(assoc_tries
, u
.sta
.assoc_tries
, DEC
);
106 IEEE80211_IF_FILE(auth_algs
, u
.sta
.auth_algs
, HEX
);
107 IEEE80211_IF_FILE(auth_alg
, u
.sta
.auth_alg
, DEC
);
108 IEEE80211_IF_FILE(auth_transaction
, u
.sta
.auth_transaction
, DEC
);
110 static ssize_t
ieee80211_if_fmt_flags(
111 const struct ieee80211_sub_if_data
*sdata
, char *buf
, int buflen
)
113 return scnprintf(buf
, buflen
, "%s%s%s%s%s%s%s\n",
114 sdata
->u
.sta
.flags
& IEEE80211_STA_SSID_SET
? "SSID\n" : "",
115 sdata
->u
.sta
.flags
& IEEE80211_STA_BSSID_SET
? "BSSID\n" : "",
116 sdata
->u
.sta
.flags
& IEEE80211_STA_PREV_BSSID_SET
? "prev BSSID\n" : "",
117 sdata
->u
.sta
.flags
& IEEE80211_STA_AUTHENTICATED
? "AUTH\n" : "",
118 sdata
->u
.sta
.flags
& IEEE80211_STA_ASSOCIATED
? "ASSOC\n" : "",
119 sdata
->u
.sta
.flags
& IEEE80211_STA_PROBEREQ_POLL
? "PROBEREQ POLL\n" : "",
120 sdata
->bss_conf
.use_cts_prot
? "CTS prot\n" : "");
122 __IEEE80211_IF_FILE(flags
);
125 IEEE80211_IF_FILE(num_sta_ps
, u
.ap
.num_sta_ps
, ATOMIC
);
126 IEEE80211_IF_FILE(dtim_count
, u
.ap
.dtim_count
, DEC
);
127 IEEE80211_IF_FILE(num_beacons
, u
.ap
.num_beacons
, DEC
);
128 IEEE80211_IF_FILE(force_unicast_rateidx
, u
.ap
.force_unicast_rateidx
, DEC
);
129 IEEE80211_IF_FILE(max_ratectrl_rateidx
, u
.ap
.max_ratectrl_rateidx
, DEC
);
131 static ssize_t
ieee80211_if_fmt_num_buffered_multicast(
132 const struct ieee80211_sub_if_data
*sdata
, char *buf
, int buflen
)
134 return scnprintf(buf
, buflen
, "%u\n",
135 skb_queue_len(&sdata
->u
.ap
.ps_bc_buf
));
137 __IEEE80211_IF_FILE(num_buffered_multicast
);
140 IEEE80211_IF_FILE(peer
, u
.wds
.remote_addr
, MAC
);
142 #define DEBUGFS_ADD(name, type)\
143 sdata->debugfs.type.name = debugfs_create_file(#name, 0444,\
144 sdata->debugfsdir, sdata, &name##_ops);
146 static void add_sta_files(struct ieee80211_sub_if_data
*sdata
)
148 DEBUGFS_ADD(channel_use
, sta
);
149 DEBUGFS_ADD(drop_unencrypted
, sta
);
150 DEBUGFS_ADD(state
, sta
);
151 DEBUGFS_ADD(bssid
, sta
);
152 DEBUGFS_ADD(prev_bssid
, sta
);
153 DEBUGFS_ADD(ssid_len
, sta
);
154 DEBUGFS_ADD(aid
, sta
);
155 DEBUGFS_ADD(ap_capab
, sta
);
156 DEBUGFS_ADD(capab
, sta
);
157 DEBUGFS_ADD(extra_ie_len
, sta
);
158 DEBUGFS_ADD(auth_tries
, sta
);
159 DEBUGFS_ADD(assoc_tries
, sta
);
160 DEBUGFS_ADD(auth_algs
, sta
);
161 DEBUGFS_ADD(auth_alg
, sta
);
162 DEBUGFS_ADD(auth_transaction
, sta
);
163 DEBUGFS_ADD(flags
, sta
);
166 static void add_ap_files(struct ieee80211_sub_if_data
*sdata
)
168 DEBUGFS_ADD(channel_use
, ap
);
169 DEBUGFS_ADD(drop_unencrypted
, ap
);
170 DEBUGFS_ADD(num_sta_ps
, ap
);
171 DEBUGFS_ADD(dtim_count
, ap
);
172 DEBUGFS_ADD(num_beacons
, ap
);
173 DEBUGFS_ADD(force_unicast_rateidx
, ap
);
174 DEBUGFS_ADD(max_ratectrl_rateidx
, ap
);
175 DEBUGFS_ADD(num_buffered_multicast
, ap
);
178 static void add_wds_files(struct ieee80211_sub_if_data
*sdata
)
180 DEBUGFS_ADD(channel_use
, wds
);
181 DEBUGFS_ADD(drop_unencrypted
, wds
);
182 DEBUGFS_ADD(peer
, wds
);
185 static void add_vlan_files(struct ieee80211_sub_if_data
*sdata
)
187 DEBUGFS_ADD(channel_use
, vlan
);
188 DEBUGFS_ADD(drop_unencrypted
, vlan
);
191 static void add_monitor_files(struct ieee80211_sub_if_data
*sdata
)
195 static void add_files(struct ieee80211_sub_if_data
*sdata
)
197 if (!sdata
->debugfsdir
)
200 switch (sdata
->vif
.type
) {
201 case IEEE80211_IF_TYPE_STA
:
202 case IEEE80211_IF_TYPE_IBSS
:
203 add_sta_files(sdata
);
205 case IEEE80211_IF_TYPE_AP
:
208 case IEEE80211_IF_TYPE_WDS
:
209 add_wds_files(sdata
);
211 case IEEE80211_IF_TYPE_MNTR
:
212 add_monitor_files(sdata
);
214 case IEEE80211_IF_TYPE_VLAN
:
215 add_vlan_files(sdata
);
222 #define DEBUGFS_DEL(name, type) \
224 debugfs_remove(sdata->debugfs.type.name); \
225 sdata->debugfs.type.name = NULL; \
228 static void del_sta_files(struct ieee80211_sub_if_data
*sdata
)
230 DEBUGFS_DEL(channel_use
, sta
);
231 DEBUGFS_DEL(drop_unencrypted
, sta
);
232 DEBUGFS_DEL(state
, sta
);
233 DEBUGFS_DEL(bssid
, sta
);
234 DEBUGFS_DEL(prev_bssid
, sta
);
235 DEBUGFS_DEL(ssid_len
, sta
);
236 DEBUGFS_DEL(aid
, sta
);
237 DEBUGFS_DEL(ap_capab
, sta
);
238 DEBUGFS_DEL(capab
, sta
);
239 DEBUGFS_DEL(extra_ie_len
, sta
);
240 DEBUGFS_DEL(auth_tries
, sta
);
241 DEBUGFS_DEL(assoc_tries
, sta
);
242 DEBUGFS_DEL(auth_algs
, sta
);
243 DEBUGFS_DEL(auth_alg
, sta
);
244 DEBUGFS_DEL(auth_transaction
, sta
);
245 DEBUGFS_DEL(flags
, sta
);
248 static void del_ap_files(struct ieee80211_sub_if_data
*sdata
)
250 DEBUGFS_DEL(channel_use
, ap
);
251 DEBUGFS_DEL(drop_unencrypted
, ap
);
252 DEBUGFS_DEL(num_sta_ps
, ap
);
253 DEBUGFS_DEL(dtim_count
, ap
);
254 DEBUGFS_DEL(num_beacons
, ap
);
255 DEBUGFS_DEL(force_unicast_rateidx
, ap
);
256 DEBUGFS_DEL(max_ratectrl_rateidx
, ap
);
257 DEBUGFS_DEL(num_buffered_multicast
, ap
);
260 static void del_wds_files(struct ieee80211_sub_if_data
*sdata
)
262 DEBUGFS_DEL(channel_use
, wds
);
263 DEBUGFS_DEL(drop_unencrypted
, wds
);
264 DEBUGFS_DEL(peer
, wds
);
267 static void del_vlan_files(struct ieee80211_sub_if_data
*sdata
)
269 DEBUGFS_DEL(channel_use
, vlan
);
270 DEBUGFS_DEL(drop_unencrypted
, vlan
);
273 static void del_monitor_files(struct ieee80211_sub_if_data
*sdata
)
277 static void del_files(struct ieee80211_sub_if_data
*sdata
, int type
)
279 if (!sdata
->debugfsdir
)
283 case IEEE80211_IF_TYPE_STA
:
284 case IEEE80211_IF_TYPE_IBSS
:
285 del_sta_files(sdata
);
287 case IEEE80211_IF_TYPE_AP
:
290 case IEEE80211_IF_TYPE_WDS
:
291 del_wds_files(sdata
);
293 case IEEE80211_IF_TYPE_MNTR
:
294 del_monitor_files(sdata
);
296 case IEEE80211_IF_TYPE_VLAN
:
297 del_vlan_files(sdata
);
304 static int notif_registered
;
306 void ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data
*sdata
)
308 char buf
[10+IFNAMSIZ
];
310 if (!notif_registered
)
313 sprintf(buf
, "netdev:%s", sdata
->dev
->name
);
314 sdata
->debugfsdir
= debugfs_create_dir(buf
,
315 sdata
->local
->hw
.wiphy
->debugfsdir
);
318 void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data
*sdata
)
320 del_files(sdata
, sdata
->vif
.type
);
321 debugfs_remove(sdata
->debugfsdir
);
322 sdata
->debugfsdir
= NULL
;
325 void ieee80211_debugfs_change_if_type(struct ieee80211_sub_if_data
*sdata
,
328 del_files(sdata
, oldtype
);
332 static int netdev_notify(struct notifier_block
* nb
,
336 struct net_device
*dev
= ndev
;
338 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
339 char buf
[10+IFNAMSIZ
];
341 if (state
!= NETDEV_CHANGENAME
)
344 if (!dev
->ieee80211_ptr
|| !dev
->ieee80211_ptr
->wiphy
)
347 if (dev
->ieee80211_ptr
->wiphy
->privid
!= mac80211_wiphy_privid
)
350 sprintf(buf
, "netdev:%s", dev
->name
);
351 dir
= sdata
->debugfsdir
;
352 if (!debugfs_rename(dir
->d_parent
, dir
, dir
->d_parent
, buf
))
353 printk(KERN_ERR
"mac80211: debugfs: failed to rename debugfs "
359 static struct notifier_block mac80211_debugfs_netdev_notifier
= {
360 .notifier_call
= netdev_notify
,
363 void ieee80211_debugfs_netdev_init(void)
367 err
= register_netdevice_notifier(&mac80211_debugfs_netdev_notifier
);
370 "mac80211: failed to install netdev notifier,"
371 " disabling per-netdev debugfs!\n");
373 notif_registered
= 1;
376 void ieee80211_debugfs_netdev_exit(void)
378 unregister_netdevice_notifier(&mac80211_debugfs_netdev_notifier
);
379 notif_registered
= 0;