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, format_string) \
19 static ssize_t key_##name##_read(struct file *file, \
20 char __user *userbuf, \
21 size_t count, loff_t *ppos) \
23 struct ieee80211_key *key = file->private_data; \
24 return mac80211_format_buffer(userbuf, count, ppos, \
25 format_string, key->prop); \
27 #define KEY_READ_D(name) KEY_READ(name, name, "%d\n")
28 #define KEY_READ_X(name) KEY_READ(name, name, "0x%x\n")
30 #define KEY_OPS(name) \
31 static const struct file_operations key_ ##name## _ops = { \
32 .read = key_##name##_read, \
33 .open = simple_open, \
34 .llseek = generic_file_llseek, \
37 #define KEY_FILE(name, format) \
38 KEY_READ_##format(name) \
41 #define KEY_CONF_READ(name, format_string) \
42 KEY_READ(conf_##name, conf.name, format_string)
43 #define KEY_CONF_READ_D(name) KEY_CONF_READ(name, "%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 = simple_open, \
49 .llseek = generic_file_llseek, \
52 #define KEY_CONF_FILE(name, format) \
53 KEY_CONF_READ_##format(name) \
56 KEY_CONF_FILE(keylen, D);
57 KEY_CONF_FILE(keyidx, D);
58 KEY_CONF_FILE(hw_key_idx, D);
60 KEY_READ(ifindex, sdata->name, "%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 case WLAN_CIPHER_SUITE_CCMP_256:
97 case WLAN_CIPHER_SUITE_AES_CMAC:
98 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
99 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
100 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
101 case WLAN_CIPHER_SUITE_GCMP:
102 case WLAN_CIPHER_SUITE_GCMP_256:
103 pn = atomic64_read(&key->conf.tx_pn);
104 len = scnprintf(buf, sizeof(buf), "%02x%02x%02x%02x%02x%02x\n",
105 (u8)(pn >> 40), (u8)(pn >> 32), (u8)(pn >> 24),
106 (u8)(pn >> 16), (u8)(pn >> 8), (u8)pn);
111 return simple_read_from_buffer(userbuf, count, ppos, buf, len);
115 static ssize_t key_rx_spec_read(struct file *file, char __user *userbuf,
116 size_t count, loff_t *ppos)
118 struct ieee80211_key *key = file->private_data;
119 char buf[14*IEEE80211_NUM_TIDS+1], *p = buf;
123 switch (key->conf.cipher) {
124 case WLAN_CIPHER_SUITE_WEP40:
125 case WLAN_CIPHER_SUITE_WEP104:
126 len = scnprintf(buf, sizeof(buf), "\n");
128 case WLAN_CIPHER_SUITE_TKIP:
129 for (i = 0; i < IEEE80211_NUM_TIDS; i++)
130 p += scnprintf(p, sizeof(buf)+buf-p,
132 key->u.tkip.rx[i].iv32,
133 key->u.tkip.rx[i].iv16);
136 case WLAN_CIPHER_SUITE_CCMP:
137 case WLAN_CIPHER_SUITE_CCMP_256:
138 for (i = 0; i < IEEE80211_NUM_TIDS + 1; i++) {
139 rpn = key->u.ccmp.rx_pn[i];
140 p += scnprintf(p, sizeof(buf)+buf-p,
141 "%02x%02x%02x%02x%02x%02x\n",
142 rpn[0], rpn[1], rpn[2],
143 rpn[3], rpn[4], rpn[5]);
147 case WLAN_CIPHER_SUITE_AES_CMAC:
148 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
149 rpn = key->u.aes_cmac.rx_pn;
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]);
156 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
157 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
158 rpn = key->u.aes_gmac.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]);
165 case WLAN_CIPHER_SUITE_GCMP:
166 case WLAN_CIPHER_SUITE_GCMP_256:
167 for (i = 0; i < IEEE80211_NUM_TIDS + 1; i++) {
168 rpn = key->u.gcmp.rx_pn[i];
169 p += scnprintf(p, sizeof(buf)+buf-p,
170 "%02x%02x%02x%02x%02x%02x\n",
171 rpn[0], rpn[1], rpn[2],
172 rpn[3], rpn[4], rpn[5]);
179 return simple_read_from_buffer(userbuf, count, ppos, buf, len);
183 static ssize_t key_replays_read(struct file *file, char __user *userbuf,
184 size_t count, loff_t *ppos)
186 struct ieee80211_key *key = file->private_data;
190 switch (key->conf.cipher) {
191 case WLAN_CIPHER_SUITE_CCMP:
192 case WLAN_CIPHER_SUITE_CCMP_256:
193 len = scnprintf(buf, sizeof(buf), "%u\n", key->u.ccmp.replays);
195 case WLAN_CIPHER_SUITE_AES_CMAC:
196 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
197 len = scnprintf(buf, sizeof(buf), "%u\n",
198 key->u.aes_cmac.replays);
200 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
201 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
202 len = scnprintf(buf, sizeof(buf), "%u\n",
203 key->u.aes_gmac.replays);
205 case WLAN_CIPHER_SUITE_GCMP:
206 case WLAN_CIPHER_SUITE_GCMP_256:
207 len = scnprintf(buf, sizeof(buf), "%u\n", key->u.gcmp.replays);
212 return simple_read_from_buffer(userbuf, count, ppos, buf, len);
216 static ssize_t key_icverrors_read(struct file *file, char __user *userbuf,
217 size_t count, loff_t *ppos)
219 struct ieee80211_key *key = file->private_data;
223 switch (key->conf.cipher) {
224 case WLAN_CIPHER_SUITE_AES_CMAC:
225 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
226 len = scnprintf(buf, sizeof(buf), "%u\n",
227 key->u.aes_cmac.icverrors);
229 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
230 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
231 len = scnprintf(buf, sizeof(buf), "%u\n",
232 key->u.aes_gmac.icverrors);
237 return simple_read_from_buffer(userbuf, count, ppos, buf, len);
241 static ssize_t key_mic_failures_read(struct file *file, char __user *userbuf,
242 size_t count, loff_t *ppos)
244 struct ieee80211_key *key = file->private_data;
248 if (key->conf.cipher != WLAN_CIPHER_SUITE_TKIP)
251 len = scnprintf(buf, sizeof(buf), "%u\n", key->u.tkip.mic_failures);
253 return simple_read_from_buffer(userbuf, count, ppos, buf, len);
255 KEY_OPS(mic_failures);
257 static ssize_t key_key_read(struct file *file, char __user *userbuf,
258 size_t count, loff_t *ppos)
260 struct ieee80211_key *key = file->private_data;
261 int i, bufsize = 2 * key->conf.keylen + 2;
262 char *buf = kmalloc(bufsize, GFP_KERNEL);
269 for (i = 0; i < key->conf.keylen; i++)
270 p += scnprintf(p, bufsize + buf - p, "%02x", key->conf.key[i]);
271 p += scnprintf(p, bufsize+buf-p, "\n");
272 res = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
278 #define DEBUGFS_ADD(name) \
279 debugfs_create_file(#name, 0400, key->debugfs.dir, \
280 key, &key_##name##_ops);
282 void ieee80211_debugfs_key_add(struct ieee80211_key *key)
286 struct sta_info *sta;
288 if (!key->local->debugfs.keys)
291 sprintf(buf, "%d", keycount);
292 key->debugfs.cnt = keycount;
294 key->debugfs.dir = debugfs_create_dir(buf,
295 key->local->debugfs.keys);
297 if (!key->debugfs.dir)
302 sprintf(buf, "../../netdev:%s/stations/%pM",
303 sta->sdata->name, sta->sta.addr);
304 key->debugfs.stalink =
305 debugfs_create_symlink("station", key->debugfs.dir, buf);
311 DEBUGFS_ADD(hw_key_idx);
312 DEBUGFS_ADD(algorithm);
313 DEBUGFS_ADD(tx_spec);
314 DEBUGFS_ADD(rx_spec);
315 DEBUGFS_ADD(replays);
316 DEBUGFS_ADD(icverrors);
317 DEBUGFS_ADD(mic_failures);
319 DEBUGFS_ADD(ifindex);
322 void ieee80211_debugfs_key_remove(struct ieee80211_key *key)
327 debugfs_remove_recursive(key->debugfs.dir);
328 key->debugfs.dir = NULL;
331 void ieee80211_debugfs_key_update_default(struct ieee80211_sub_if_data *sdata)
334 struct ieee80211_key *key;
336 if (!sdata->vif.debugfs_dir)
339 lockdep_assert_held(&sdata->local->key_mtx);
341 debugfs_remove(sdata->debugfs.default_unicast_key);
342 sdata->debugfs.default_unicast_key = NULL;
344 if (sdata->default_unicast_key) {
345 key = key_mtx_dereference(sdata->local,
346 sdata->default_unicast_key);
347 sprintf(buf, "../keys/%d", key->debugfs.cnt);
348 sdata->debugfs.default_unicast_key =
349 debugfs_create_symlink("default_unicast_key",
350 sdata->vif.debugfs_dir, buf);
353 debugfs_remove(sdata->debugfs.default_multicast_key);
354 sdata->debugfs.default_multicast_key = NULL;
356 if (sdata->default_multicast_key) {
357 key = key_mtx_dereference(sdata->local,
358 sdata->default_multicast_key);
359 sprintf(buf, "../keys/%d", key->debugfs.cnt);
360 sdata->debugfs.default_multicast_key =
361 debugfs_create_symlink("default_multicast_key",
362 sdata->vif.debugfs_dir, buf);
366 void ieee80211_debugfs_key_add_mgmt_default(struct ieee80211_sub_if_data *sdata)
369 struct ieee80211_key *key;
371 if (!sdata->vif.debugfs_dir)
374 key = key_mtx_dereference(sdata->local,
375 sdata->default_mgmt_key);
377 sprintf(buf, "../keys/%d", key->debugfs.cnt);
378 sdata->debugfs.default_mgmt_key =
379 debugfs_create_symlink("default_mgmt_key",
380 sdata->vif.debugfs_dir, buf);
382 ieee80211_debugfs_key_remove_mgmt_default(sdata);
385 void ieee80211_debugfs_key_remove_mgmt_default(struct ieee80211_sub_if_data *sdata)
390 debugfs_remove(sdata->debugfs.default_mgmt_key);
391 sdata->debugfs.default_mgmt_key = NULL;
394 void ieee80211_debugfs_key_sta_del(struct ieee80211_key *key,
395 struct sta_info *sta)
397 debugfs_remove(key->debugfs.stalink);
398 key->debugfs.stalink = NULL;