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, \
35 .llseek = generic_file_llseek, \
38 #define KEY_FILE(name, format) \
39 KEY_READ_##format(name) \
42 #define KEY_CONF_READ(name, buflen, format_string) \
43 KEY_READ(conf_##name, conf.name, buflen, format_string)
44 #define KEY_CONF_READ_D(name) KEY_CONF_READ(name, 20, "%d\n")
46 #define KEY_CONF_OPS(name) \
47 static const struct file_operations key_ ##name## _ops = { \
48 .read = key_conf_##name##_read, \
49 .open = mac80211_open_file_generic, \
50 .llseek = generic_file_llseek, \
53 #define KEY_CONF_FILE(name, format) \
54 KEY_CONF_READ_##format(name) \
57 KEY_CONF_FILE(keylen, D);
58 KEY_CONF_FILE(keyidx, D);
59 KEY_CONF_FILE(hw_key_idx, D);
61 KEY_FILE(tx_rx_count, D);
62 KEY_READ(ifindex, sdata->name, IFNAMSIZ + 2, "%s\n");
65 static ssize_t key_algorithm_read(struct file *file,
67 size_t count, loff_t *ppos)
70 struct ieee80211_key *key = file->private_data;
72 switch (key->conf.alg) {
83 alg = "AES-128-CMAC\n";
88 return simple_read_from_buffer(userbuf, count, ppos, alg, strlen(alg));
92 static ssize_t key_tx_spec_read(struct file *file, char __user *userbuf,
93 size_t count, loff_t *ppos)
98 struct ieee80211_key *key = file->private_data;
100 switch (key->conf.alg) {
102 len = scnprintf(buf, sizeof(buf), "\n");
105 len = scnprintf(buf, sizeof(buf), "%08x %04x\n",
107 key->u.tkip.tx.iv16);
110 tpn = key->u.ccmp.tx_pn;
111 len = scnprintf(buf, sizeof(buf), "%02x%02x%02x%02x%02x%02x\n",
112 tpn[0], tpn[1], tpn[2], tpn[3], tpn[4], tpn[5]);
115 tpn = key->u.aes_cmac.tx_pn;
116 len = scnprintf(buf, sizeof(buf), "%02x%02x%02x%02x%02x%02x\n",
117 tpn[0], tpn[1], tpn[2], tpn[3], tpn[4],
123 return simple_read_from_buffer(userbuf, count, ppos, buf, len);
127 static ssize_t key_rx_spec_read(struct file *file, char __user *userbuf,
128 size_t count, loff_t *ppos)
130 struct ieee80211_key *key = file->private_data;
131 char buf[14*NUM_RX_DATA_QUEUES+1], *p = buf;
135 switch (key->conf.alg) {
137 len = scnprintf(buf, sizeof(buf), "\n");
140 for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
141 p += scnprintf(p, sizeof(buf)+buf-p,
143 key->u.tkip.rx[i].iv32,
144 key->u.tkip.rx[i].iv16);
148 for (i = 0; i < NUM_RX_DATA_QUEUES + 1; i++) {
149 rpn = key->u.ccmp.rx_pn[i];
150 p += scnprintf(p, sizeof(buf)+buf-p,
151 "%02x%02x%02x%02x%02x%02x\n",
152 rpn[0], rpn[1], rpn[2],
153 rpn[3], rpn[4], rpn[5]);
158 rpn = key->u.aes_cmac.rx_pn;
159 p += scnprintf(p, sizeof(buf)+buf-p,
160 "%02x%02x%02x%02x%02x%02x\n",
161 rpn[0], rpn[1], rpn[2],
162 rpn[3], rpn[4], rpn[5]);
168 return simple_read_from_buffer(userbuf, count, ppos, buf, len);
172 static ssize_t key_replays_read(struct file *file, char __user *userbuf,
173 size_t count, loff_t *ppos)
175 struct ieee80211_key *key = file->private_data;
179 switch (key->conf.alg) {
181 len = scnprintf(buf, sizeof(buf), "%u\n", key->u.ccmp.replays);
184 len = scnprintf(buf, sizeof(buf), "%u\n",
185 key->u.aes_cmac.replays);
190 return simple_read_from_buffer(userbuf, count, ppos, buf, len);
194 static ssize_t key_icverrors_read(struct file *file, char __user *userbuf,
195 size_t count, loff_t *ppos)
197 struct ieee80211_key *key = file->private_data;
201 switch (key->conf.alg) {
203 len = scnprintf(buf, sizeof(buf), "%u\n",
204 key->u.aes_cmac.icverrors);
209 return simple_read_from_buffer(userbuf, count, ppos, buf, len);
213 static ssize_t key_key_read(struct file *file, char __user *userbuf,
214 size_t count, loff_t *ppos)
216 struct ieee80211_key *key = file->private_data;
217 int i, res, bufsize = 2 * key->conf.keylen + 2;
218 char *buf = kmalloc(bufsize, GFP_KERNEL);
221 for (i = 0; i < key->conf.keylen; i++)
222 p += scnprintf(p, bufsize + buf - p, "%02x", key->conf.key[i]);
223 p += scnprintf(p, bufsize+buf-p, "\n");
224 res = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
230 #define DEBUGFS_ADD(name) \
231 debugfs_create_file(#name, 0400, key->debugfs.dir, \
232 key, &key_##name##_ops);
234 void ieee80211_debugfs_key_add(struct ieee80211_key *key)
238 struct sta_info *sta;
240 if (!key->local->debugfs.keys)
243 sprintf(buf, "%d", keycount);
244 key->debugfs.cnt = keycount;
246 key->debugfs.dir = debugfs_create_dir(buf,
247 key->local->debugfs.keys);
249 if (!key->debugfs.dir)
253 sta = rcu_dereference(key->sta);
255 sprintf(buf, "../../stations/%pM", sta->sta.addr);
258 /* using sta as a boolean is fine outside RCU lock */
260 key->debugfs.stalink =
261 debugfs_create_symlink("station", key->debugfs.dir, buf);
266 DEBUGFS_ADD(hw_key_idx);
267 DEBUGFS_ADD(tx_rx_count);
268 DEBUGFS_ADD(algorithm);
269 DEBUGFS_ADD(tx_spec);
270 DEBUGFS_ADD(rx_spec);
271 DEBUGFS_ADD(replays);
272 DEBUGFS_ADD(icverrors);
274 DEBUGFS_ADD(ifindex);
277 void ieee80211_debugfs_key_remove(struct ieee80211_key *key)
282 debugfs_remove_recursive(key->debugfs.dir);
283 key->debugfs.dir = NULL;
285 void ieee80211_debugfs_key_add_default(struct ieee80211_sub_if_data *sdata)
288 struct ieee80211_key *key;
290 if (!sdata->debugfs.dir)
293 /* this is running under the key lock */
295 key = sdata->default_key;
297 sprintf(buf, "../keys/%d", key->debugfs.cnt);
298 sdata->debugfs.default_key =
299 debugfs_create_symlink("default_key",
300 sdata->debugfs.dir, buf);
302 ieee80211_debugfs_key_remove_default(sdata);
305 void ieee80211_debugfs_key_remove_default(struct ieee80211_sub_if_data *sdata)
310 debugfs_remove(sdata->debugfs.default_key);
311 sdata->debugfs.default_key = NULL;
314 void ieee80211_debugfs_key_add_mgmt_default(struct ieee80211_sub_if_data *sdata)
317 struct ieee80211_key *key;
319 if (!sdata->debugfs.dir)
322 /* this is running under the key lock */
324 key = sdata->default_mgmt_key;
326 sprintf(buf, "../keys/%d", key->debugfs.cnt);
327 sdata->debugfs.default_mgmt_key =
328 debugfs_create_symlink("default_mgmt_key",
329 sdata->debugfs.dir, buf);
331 ieee80211_debugfs_key_remove_mgmt_default(sdata);
334 void ieee80211_debugfs_key_remove_mgmt_default(struct ieee80211_sub_if_data *sdata)
339 debugfs_remove(sdata->debugfs.default_mgmt_key);
340 sdata->debugfs.default_mgmt_key = NULL;
343 void ieee80211_debugfs_key_sta_del(struct ieee80211_key *key,
344 struct sta_info *sta)
346 debugfs_remove(key->debugfs.stalink);
347 key->debugfs.stalink = NULL;