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 "ieee80211_i.h"
15 #include "debugfs_key.h"
17 #define KEY_READ(name, prop, buflen, format_string) \
18 static ssize_t key_##name##_read(struct file *file, \
19 char __user *userbuf, \
20 size_t count, loff_t *ppos) \
23 struct ieee80211_key *key = file->private_data; \
24 int res = scnprintf(buf, buflen, format_string, key->prop); \
25 return simple_read_from_buffer(userbuf, count, ppos, buf, res); \
27 #define KEY_READ_D(name) KEY_READ(name, name, 20, "%d\n")
28 #define KEY_READ_X(name) KEY_READ(name, name, 20, "0x%x\n")
30 #define KEY_OPS(name) \
31 static const struct file_operations key_ ##name## _ops = { \
32 .read = key_##name##_read, \
33 .open = mac80211_open_file_generic, \
36 #define KEY_FILE(name, format) \
37 KEY_READ_##format(name) \
40 #define KEY_CONF_READ(name, buflen, format_string) \
41 KEY_READ(conf_##name, conf.name, buflen, format_string)
42 #define KEY_CONF_READ_D(name) KEY_CONF_READ(name, 20, "%d\n")
44 #define KEY_CONF_OPS(name) \
45 static const struct file_operations key_ ##name## _ops = { \
46 .read = key_conf_##name##_read, \
47 .open = mac80211_open_file_generic, \
50 #define KEY_CONF_FILE(name, format) \
51 KEY_CONF_READ_##format(name) \
54 KEY_CONF_FILE(keylen, D);
55 KEY_CONF_FILE(keyidx, D);
56 KEY_CONF_FILE(hw_key_idx, D);
58 KEY_FILE(tx_rx_count, D);
59 KEY_READ(ifindex, sdata->dev->ifindex, 20, "%d\n");
62 static ssize_t key_algorithm_read(struct file *file,
64 size_t count, loff_t *ppos)
67 struct ieee80211_key *key = file->private_data;
69 switch (key->conf.alg) {
80 alg = "AES-128-CMAC\n";
85 return simple_read_from_buffer(userbuf, count, ppos, alg, strlen(alg));
89 static ssize_t key_tx_spec_read(struct file *file, char __user *userbuf,
90 size_t count, loff_t *ppos)
95 struct ieee80211_key *key = file->private_data;
97 switch (key->conf.alg) {
99 len = scnprintf(buf, sizeof(buf), "\n");
102 len = scnprintf(buf, sizeof(buf), "%08x %04x\n",
104 key->u.tkip.tx.iv16);
107 tpn = key->u.ccmp.tx_pn;
108 len = scnprintf(buf, sizeof(buf), "%02x%02x%02x%02x%02x%02x\n",
109 tpn[0], tpn[1], tpn[2], tpn[3], tpn[4], tpn[5]);
112 tpn = key->u.aes_cmac.tx_pn;
113 len = scnprintf(buf, sizeof(buf), "%02x%02x%02x%02x%02x%02x\n",
114 tpn[0], tpn[1], tpn[2], tpn[3], tpn[4],
120 return simple_read_from_buffer(userbuf, count, ppos, buf, len);
124 static ssize_t key_rx_spec_read(struct file *file, char __user *userbuf,
125 size_t count, loff_t *ppos)
127 struct ieee80211_key *key = file->private_data;
128 char buf[14*NUM_RX_DATA_QUEUES+1], *p = buf;
132 switch (key->conf.alg) {
134 len = scnprintf(buf, sizeof(buf), "\n");
137 for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
138 p += scnprintf(p, sizeof(buf)+buf-p,
140 key->u.tkip.rx[i].iv32,
141 key->u.tkip.rx[i].iv16);
145 for (i = 0; i < NUM_RX_DATA_QUEUES; i++) {
146 rpn = key->u.ccmp.rx_pn[i];
147 p += scnprintf(p, sizeof(buf)+buf-p,
148 "%02x%02x%02x%02x%02x%02x\n",
149 rpn[0], rpn[1], rpn[2],
150 rpn[3], rpn[4], rpn[5]);
155 rpn = key->u.aes_cmac.rx_pn;
156 p += scnprintf(p, sizeof(buf)+buf-p,
157 "%02x%02x%02x%02x%02x%02x\n",
158 rpn[0], rpn[1], rpn[2],
159 rpn[3], rpn[4], rpn[5]);
165 return simple_read_from_buffer(userbuf, count, ppos, buf, len);
169 static ssize_t key_replays_read(struct file *file, char __user *userbuf,
170 size_t count, loff_t *ppos)
172 struct ieee80211_key *key = file->private_data;
176 switch (key->conf.alg) {
178 len = scnprintf(buf, sizeof(buf), "%u\n", key->u.ccmp.replays);
181 len = scnprintf(buf, sizeof(buf), "%u\n",
182 key->u.aes_cmac.replays);
187 return simple_read_from_buffer(userbuf, count, ppos, buf, len);
191 static ssize_t key_icverrors_read(struct file *file, char __user *userbuf,
192 size_t count, loff_t *ppos)
194 struct ieee80211_key *key = file->private_data;
198 switch (key->conf.alg) {
200 len = scnprintf(buf, sizeof(buf), "%u\n",
201 key->u.aes_cmac.icverrors);
206 return simple_read_from_buffer(userbuf, count, ppos, buf, len);
210 static ssize_t key_key_read(struct file *file, char __user *userbuf,
211 size_t count, loff_t *ppos)
213 struct ieee80211_key *key = file->private_data;
214 int i, res, bufsize = 2 * key->conf.keylen + 2;
215 char *buf = kmalloc(bufsize, GFP_KERNEL);
218 for (i = 0; i < key->conf.keylen; i++)
219 p += scnprintf(p, bufsize + buf - p, "%02x", key->conf.key[i]);
220 p += scnprintf(p, bufsize+buf-p, "\n");
221 res = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
227 #define DEBUGFS_ADD(name) \
228 key->debugfs.name = debugfs_create_file(#name, 0400,\
229 key->debugfs.dir, key, &key_##name##_ops);
231 void ieee80211_debugfs_key_add(struct ieee80211_key *key)
235 struct sta_info *sta;
237 if (!key->local->debugfs.keys)
240 sprintf(buf, "%d", keycount);
241 key->debugfs.cnt = keycount;
243 key->debugfs.dir = debugfs_create_dir(buf,
244 key->local->debugfs.keys);
246 if (!key->debugfs.dir)
250 sta = rcu_dereference(key->sta);
252 sprintf(buf, "../../stations/%pM", sta->sta.addr);
255 /* using sta as a boolean is fine outside RCU lock */
257 key->debugfs.stalink =
258 debugfs_create_symlink("station", key->debugfs.dir, buf);
263 DEBUGFS_ADD(hw_key_idx);
264 DEBUGFS_ADD(tx_rx_count);
265 DEBUGFS_ADD(algorithm);
266 DEBUGFS_ADD(tx_spec);
267 DEBUGFS_ADD(rx_spec);
268 DEBUGFS_ADD(replays);
269 DEBUGFS_ADD(icverrors);
271 DEBUGFS_ADD(ifindex);
274 #define DEBUGFS_DEL(name) \
275 debugfs_remove(key->debugfs.name); key->debugfs.name = NULL;
277 void ieee80211_debugfs_key_remove(struct ieee80211_key *key)
285 DEBUGFS_DEL(hw_key_idx);
286 DEBUGFS_DEL(tx_rx_count);
287 DEBUGFS_DEL(algorithm);
288 DEBUGFS_DEL(tx_spec);
289 DEBUGFS_DEL(rx_spec);
290 DEBUGFS_DEL(replays);
291 DEBUGFS_DEL(icverrors);
293 DEBUGFS_DEL(ifindex);
295 debugfs_remove(key->debugfs.stalink);
296 key->debugfs.stalink = NULL;
297 debugfs_remove(key->debugfs.dir);
298 key->debugfs.dir = NULL;
300 void ieee80211_debugfs_key_add_default(struct ieee80211_sub_if_data *sdata)
303 struct ieee80211_key *key;
305 if (!sdata->debugfsdir)
308 /* this is running under the key lock */
310 key = sdata->default_key;
312 sprintf(buf, "../keys/%d", key->debugfs.cnt);
313 sdata->common_debugfs.default_key =
314 debugfs_create_symlink("default_key",
315 sdata->debugfsdir, buf);
317 ieee80211_debugfs_key_remove_default(sdata);
320 void ieee80211_debugfs_key_remove_default(struct ieee80211_sub_if_data *sdata)
325 debugfs_remove(sdata->common_debugfs.default_key);
326 sdata->common_debugfs.default_key = NULL;
329 void ieee80211_debugfs_key_add_mgmt_default(struct ieee80211_sub_if_data *sdata)
332 struct ieee80211_key *key;
334 if (!sdata->debugfsdir)
337 /* this is running under the key lock */
339 key = sdata->default_mgmt_key;
341 sprintf(buf, "../keys/%d", key->debugfs.cnt);
342 sdata->common_debugfs.default_mgmt_key =
343 debugfs_create_symlink("default_mgmt_key",
344 sdata->debugfsdir, buf);
346 ieee80211_debugfs_key_remove_mgmt_default(sdata);
349 void ieee80211_debugfs_key_remove_mgmt_default(struct ieee80211_sub_if_data *sdata)
354 debugfs_remove(sdata->common_debugfs.default_mgmt_key);
355 sdata->common_debugfs.default_mgmt_key = NULL;
358 void ieee80211_debugfs_key_sta_del(struct ieee80211_key *key,
359 struct sta_info *sta)
361 debugfs_remove(key->debugfs.stalink);
362 key->debugfs.stalink = NULL;