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;
70 switch (key->conf.alg) {
81 alg = "AES-128-CMAC\n";
86 return simple_read_from_buffer(userbuf, count, ppos, alg, strlen(alg));
90 static ssize_t key_tx_spec_read(struct file *file, char __user *userbuf,
91 size_t count, loff_t *ppos)
96 struct ieee80211_key *key = file->private_data;
98 switch (key->conf.alg) {
100 len = scnprintf(buf, sizeof(buf), "\n");
103 len = scnprintf(buf, sizeof(buf), "%08x %04x\n",
105 key->u.tkip.tx.iv16);
108 tpn = key->u.ccmp.tx_pn;
109 len = scnprintf(buf, sizeof(buf), "%02x%02x%02x%02x%02x%02x\n",
110 tpn[0], tpn[1], tpn[2], tpn[3], tpn[4], tpn[5]);
113 tpn = key->u.aes_cmac.tx_pn;
114 len = scnprintf(buf, sizeof(buf), "%02x%02x%02x%02x%02x%02x\n",
115 tpn[0], tpn[1], tpn[2], tpn[3], tpn[4],
121 return simple_read_from_buffer(userbuf, count, ppos, buf, len);
125 static ssize_t key_rx_spec_read(struct file *file, char __user *userbuf,
126 size_t count, loff_t *ppos)
128 struct ieee80211_key *key = file->private_data;
129 char buf[14*NUM_RX_DATA_QUEUES+1], *p = buf;
133 switch (key->conf.alg) {
135 len = scnprintf(buf, sizeof(buf), "\n");
138 for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
139 p += scnprintf(p, sizeof(buf)+buf-p,
141 key->u.tkip.rx[i].iv32,
142 key->u.tkip.rx[i].iv16);
146 for (i = 0; i < NUM_RX_DATA_QUEUES; i++) {
147 rpn = key->u.ccmp.rx_pn[i];
148 p += scnprintf(p, sizeof(buf)+buf-p,
149 "%02x%02x%02x%02x%02x%02x\n",
150 rpn[0], rpn[1], rpn[2],
151 rpn[3], rpn[4], rpn[5]);
156 rpn = key->u.aes_cmac.rx_pn;
157 p += scnprintf(p, sizeof(buf)+buf-p,
158 "%02x%02x%02x%02x%02x%02x\n",
159 rpn[0], rpn[1], rpn[2],
160 rpn[3], rpn[4], rpn[5]);
166 return simple_read_from_buffer(userbuf, count, ppos, buf, len);
170 static ssize_t key_replays_read(struct file *file, char __user *userbuf,
171 size_t count, loff_t *ppos)
173 struct ieee80211_key *key = file->private_data;
177 switch (key->conf.alg) {
179 len = scnprintf(buf, sizeof(buf), "%u\n", key->u.ccmp.replays);
182 len = scnprintf(buf, sizeof(buf), "%u\n",
183 key->u.aes_cmac.replays);
188 return simple_read_from_buffer(userbuf, count, ppos, buf, len);
192 static ssize_t key_icverrors_read(struct file *file, char __user *userbuf,
193 size_t count, loff_t *ppos)
195 struct ieee80211_key *key = file->private_data;
199 switch (key->conf.alg) {
201 len = scnprintf(buf, sizeof(buf), "%u\n",
202 key->u.aes_cmac.icverrors);
207 return simple_read_from_buffer(userbuf, count, ppos, buf, len);
211 static ssize_t key_key_read(struct file *file, char __user *userbuf,
212 size_t count, loff_t *ppos)
214 struct ieee80211_key *key = file->private_data;
215 int i, res, bufsize = 2 * key->conf.keylen + 2;
216 char *buf = kmalloc(bufsize, GFP_KERNEL);
219 for (i = 0; i < key->conf.keylen; i++)
220 p += scnprintf(p, bufsize + buf - p, "%02x", key->conf.key[i]);
221 p += scnprintf(p, bufsize+buf-p, "\n");
222 res = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
228 #define DEBUGFS_ADD(name) \
229 debugfs_create_file(#name, 0400, key->debugfs.dir, \
230 key, &key_##name##_ops);
232 void ieee80211_debugfs_key_add(struct ieee80211_key *key)
236 struct sta_info *sta;
238 if (!key->local->debugfs.keys)
241 sprintf(buf, "%d", keycount);
242 key->debugfs.cnt = keycount;
244 key->debugfs.dir = debugfs_create_dir(buf,
245 key->local->debugfs.keys);
247 if (!key->debugfs.dir)
251 sta = rcu_dereference(key->sta);
253 sprintf(buf, "../../stations/%pM", sta->sta.addr);
256 /* using sta as a boolean is fine outside RCU lock */
258 key->debugfs.stalink =
259 debugfs_create_symlink("station", key->debugfs.dir, buf);
264 DEBUGFS_ADD(hw_key_idx);
265 DEBUGFS_ADD(tx_rx_count);
266 DEBUGFS_ADD(algorithm);
267 DEBUGFS_ADD(tx_spec);
268 DEBUGFS_ADD(rx_spec);
269 DEBUGFS_ADD(replays);
270 DEBUGFS_ADD(icverrors);
272 DEBUGFS_ADD(ifindex);
275 void ieee80211_debugfs_key_remove(struct ieee80211_key *key)
280 debugfs_remove_recursive(key->debugfs.dir);
281 key->debugfs.dir = NULL;
283 void ieee80211_debugfs_key_add_default(struct ieee80211_sub_if_data *sdata)
286 struct ieee80211_key *key;
288 if (!sdata->debugfs.dir)
291 /* this is running under the key lock */
293 key = sdata->default_key;
295 sprintf(buf, "../keys/%d", key->debugfs.cnt);
296 sdata->debugfs.default_key =
297 debugfs_create_symlink("default_key",
298 sdata->debugfs.dir, buf);
300 ieee80211_debugfs_key_remove_default(sdata);
303 void ieee80211_debugfs_key_remove_default(struct ieee80211_sub_if_data *sdata)
308 debugfs_remove(sdata->debugfs.default_key);
309 sdata->debugfs.default_key = NULL;
312 void ieee80211_debugfs_key_add_mgmt_default(struct ieee80211_sub_if_data *sdata)
315 struct ieee80211_key *key;
317 if (!sdata->debugfs.dir)
320 /* this is running under the key lock */
322 key = sdata->default_mgmt_key;
324 sprintf(buf, "../keys/%d", key->debugfs.cnt);
325 sdata->debugfs.default_mgmt_key =
326 debugfs_create_symlink("default_mgmt_key",
327 sdata->debugfs.dir, buf);
329 ieee80211_debugfs_key_remove_mgmt_default(sdata);
332 void ieee80211_debugfs_key_remove_mgmt_default(struct ieee80211_sub_if_data *sdata)
337 debugfs_remove(sdata->debugfs.default_mgmt_key);
338 sdata->debugfs.default_mgmt_key = NULL;
341 void ieee80211_debugfs_key_sta_del(struct ieee80211_key *key,
342 struct sta_info *sta)
344 debugfs_remove(key->debugfs.stalink);
345 key->debugfs.stalink = NULL;