2 * Copyright 2003-2005 Devicescape Software, Inc.
3 * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
4 * Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
11 #include <linux/kobject.h>
12 #include <linux/slab.h>
13 #include "ieee80211_i.h"
16 #include "debugfs_key.h"
18 #define KEY_READ(name, prop, buflen, format_string) \
19 static ssize_t key_##name##_read(struct file *file, \
20 char __user *userbuf, \
21 size_t count, loff_t *ppos) \
24 struct ieee80211_key *key = file->private_data; \
25 int res = scnprintf(buf, buflen, format_string, key->prop); \
26 return simple_read_from_buffer(userbuf, count, ppos, buf, res); \
28 #define KEY_READ_D(name) KEY_READ(name, name, 20, "%d\n")
29 #define KEY_READ_X(name) KEY_READ(name, name, 20, "0x%x\n")
31 #define KEY_OPS(name) \
32 static const struct file_operations key_ ##name## _ops = { \
33 .read = key_##name##_read, \
34 .open = mac80211_open_file_generic, \
37 #define KEY_FILE(name, format) \
38 KEY_READ_##format(name) \
41 #define KEY_CONF_READ(name, buflen, format_string) \
42 KEY_READ(conf_##name, conf.name, buflen, format_string)
43 #define KEY_CONF_READ_D(name) KEY_CONF_READ(name, 20, "%d\n")
45 #define KEY_CONF_OPS(name) \
46 static const struct file_operations key_ ##name## _ops = { \
47 .read = key_conf_##name##_read, \
48 .open = mac80211_open_file_generic, \
51 #define KEY_CONF_FILE(name, format) \
52 KEY_CONF_READ_##format(name) \
55 KEY_CONF_FILE(keylen, D);
56 KEY_CONF_FILE(keyidx, D);
57 KEY_CONF_FILE(hw_key_idx, D);
59 KEY_FILE(tx_rx_count, D);
60 KEY_READ(ifindex, sdata->name, IFNAMSIZ + 2, "%s\n");
63 static ssize_t key_algorithm_read(struct file *file,
65 size_t count, loff_t *ppos)
68 struct ieee80211_key *key = file->private_data;
69 u32 c = key->conf.cipher;
71 sprintf(buf, "%.2x-%.2x-%.2x:%d\n",
72 c >> 24, (c >> 16) & 0xff, (c >> 8) & 0xff, c & 0xff);
73 return simple_read_from_buffer(userbuf, count, ppos, buf, strlen(buf));
77 static ssize_t key_tx_spec_read(struct file *file, char __user *userbuf,
78 size_t count, loff_t *ppos)
83 struct ieee80211_key *key = file->private_data;
85 switch (key->conf.cipher) {
86 case WLAN_CIPHER_SUITE_WEP40:
87 case WLAN_CIPHER_SUITE_WEP104:
88 len = scnprintf(buf, sizeof(buf), "\n");
90 case WLAN_CIPHER_SUITE_TKIP:
91 len = scnprintf(buf, sizeof(buf), "%08x %04x\n",
95 case WLAN_CIPHER_SUITE_CCMP:
96 tpn = key->u.ccmp.tx_pn;
97 len = scnprintf(buf, sizeof(buf), "%02x%02x%02x%02x%02x%02x\n",
98 tpn[0], tpn[1], tpn[2], tpn[3], tpn[4], tpn[5]);
100 case WLAN_CIPHER_SUITE_AES_CMAC:
101 tpn = key->u.aes_cmac.tx_pn;
102 len = scnprintf(buf, sizeof(buf), "%02x%02x%02x%02x%02x%02x\n",
103 tpn[0], tpn[1], tpn[2], tpn[3], tpn[4],
109 return simple_read_from_buffer(userbuf, count, ppos, buf, len);
113 static ssize_t key_rx_spec_read(struct file *file, char __user *userbuf,
114 size_t count, loff_t *ppos)
116 struct ieee80211_key *key = file->private_data;
117 char buf[14*NUM_RX_DATA_QUEUES+1], *p = buf;
121 switch (key->conf.cipher) {
122 case WLAN_CIPHER_SUITE_WEP40:
123 case WLAN_CIPHER_SUITE_WEP104:
124 len = scnprintf(buf, sizeof(buf), "\n");
126 case WLAN_CIPHER_SUITE_TKIP:
127 for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
128 p += scnprintf(p, sizeof(buf)+buf-p,
130 key->u.tkip.rx[i].iv32,
131 key->u.tkip.rx[i].iv16);
134 case WLAN_CIPHER_SUITE_CCMP:
135 for (i = 0; i < NUM_RX_DATA_QUEUES + 1; i++) {
136 rpn = key->u.ccmp.rx_pn[i];
137 p += scnprintf(p, sizeof(buf)+buf-p,
138 "%02x%02x%02x%02x%02x%02x\n",
139 rpn[0], rpn[1], rpn[2],
140 rpn[3], rpn[4], rpn[5]);
144 case WLAN_CIPHER_SUITE_AES_CMAC:
145 rpn = key->u.aes_cmac.rx_pn;
146 p += scnprintf(p, sizeof(buf)+buf-p,
147 "%02x%02x%02x%02x%02x%02x\n",
148 rpn[0], rpn[1], rpn[2],
149 rpn[3], rpn[4], rpn[5]);
155 return simple_read_from_buffer(userbuf, count, ppos, buf, len);
159 static ssize_t key_replays_read(struct file *file, char __user *userbuf,
160 size_t count, loff_t *ppos)
162 struct ieee80211_key *key = file->private_data;
166 switch (key->conf.cipher) {
167 case WLAN_CIPHER_SUITE_CCMP:
168 len = scnprintf(buf, sizeof(buf), "%u\n", key->u.ccmp.replays);
170 case WLAN_CIPHER_SUITE_AES_CMAC:
171 len = scnprintf(buf, sizeof(buf), "%u\n",
172 key->u.aes_cmac.replays);
177 return simple_read_from_buffer(userbuf, count, ppos, buf, len);
181 static ssize_t key_icverrors_read(struct file *file, char __user *userbuf,
182 size_t count, loff_t *ppos)
184 struct ieee80211_key *key = file->private_data;
188 switch (key->conf.cipher) {
189 case WLAN_CIPHER_SUITE_AES_CMAC:
190 len = scnprintf(buf, sizeof(buf), "%u\n",
191 key->u.aes_cmac.icverrors);
196 return simple_read_from_buffer(userbuf, count, ppos, buf, len);
200 static ssize_t key_key_read(struct file *file, char __user *userbuf,
201 size_t count, loff_t *ppos)
203 struct ieee80211_key *key = file->private_data;
204 int i, res, bufsize = 2 * key->conf.keylen + 2;
205 char *buf = kmalloc(bufsize, GFP_KERNEL);
208 for (i = 0; i < key->conf.keylen; i++)
209 p += scnprintf(p, bufsize + buf - p, "%02x", key->conf.key[i]);
210 p += scnprintf(p, bufsize+buf-p, "\n");
211 res = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
217 #define DEBUGFS_ADD(name) \
218 debugfs_create_file(#name, 0400, key->debugfs.dir, \
219 key, &key_##name##_ops);
221 void ieee80211_debugfs_key_add(struct ieee80211_key *key)
225 struct sta_info *sta;
227 if (!key->local->debugfs.keys)
230 sprintf(buf, "%d", keycount);
231 key->debugfs.cnt = keycount;
233 key->debugfs.dir = debugfs_create_dir(buf,
234 key->local->debugfs.keys);
236 if (!key->debugfs.dir)
240 sta = rcu_dereference(key->sta);
242 sprintf(buf, "../../stations/%pM", sta->sta.addr);
245 /* using sta as a boolean is fine outside RCU lock */
247 key->debugfs.stalink =
248 debugfs_create_symlink("station", key->debugfs.dir, buf);
253 DEBUGFS_ADD(hw_key_idx);
254 DEBUGFS_ADD(tx_rx_count);
255 DEBUGFS_ADD(algorithm);
256 DEBUGFS_ADD(tx_spec);
257 DEBUGFS_ADD(rx_spec);
258 DEBUGFS_ADD(replays);
259 DEBUGFS_ADD(icverrors);
261 DEBUGFS_ADD(ifindex);
264 void ieee80211_debugfs_key_remove(struct ieee80211_key *key)
269 debugfs_remove_recursive(key->debugfs.dir);
270 key->debugfs.dir = NULL;
272 void ieee80211_debugfs_key_add_default(struct ieee80211_sub_if_data *sdata)
275 struct ieee80211_key *key;
277 if (!sdata->debugfs.dir)
280 /* this is running under the key lock */
282 key = sdata->default_key;
284 sprintf(buf, "../keys/%d", key->debugfs.cnt);
285 sdata->debugfs.default_key =
286 debugfs_create_symlink("default_key",
287 sdata->debugfs.dir, buf);
289 ieee80211_debugfs_key_remove_default(sdata);
292 void ieee80211_debugfs_key_remove_default(struct ieee80211_sub_if_data *sdata)
297 debugfs_remove(sdata->debugfs.default_key);
298 sdata->debugfs.default_key = NULL;
301 void ieee80211_debugfs_key_add_mgmt_default(struct ieee80211_sub_if_data *sdata)
304 struct ieee80211_key *key;
306 if (!sdata->debugfs.dir)
309 /* this is running under the key lock */
311 key = sdata->default_mgmt_key;
313 sprintf(buf, "../keys/%d", key->debugfs.cnt);
314 sdata->debugfs.default_mgmt_key =
315 debugfs_create_symlink("default_mgmt_key",
316 sdata->debugfs.dir, buf);
318 ieee80211_debugfs_key_remove_mgmt_default(sdata);
321 void ieee80211_debugfs_key_remove_mgmt_default(struct ieee80211_sub_if_data *sdata)
326 debugfs_remove(sdata->debugfs.default_mgmt_key);
327 sdata->debugfs.default_mgmt_key = NULL;
330 void ieee80211_debugfs_key_sta_del(struct ieee80211_key *key,
331 struct sta_info *sta)
333 debugfs_remove(key->debugfs.stalink);
334 key->debugfs.stalink = NULL;