Commit | Line | Data |
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e9f207f0 JB |
1 | /* |
2 | * Copyright 2003-2005 Devicescape Software, Inc. | |
3 | * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz> | |
4 | * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> | |
5 | * | |
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. | |
9 | */ | |
10 | ||
11 | #include <linux/kobject.h> | |
5a0e3ad6 | 12 | #include <linux/slab.h> |
e9f207f0 | 13 | #include "ieee80211_i.h" |
2c8dccc7 | 14 | #include "key.h" |
e9f207f0 JB |
15 | #include "debugfs.h" |
16 | #include "debugfs_key.h" | |
17 | ||
07caf9d6 | 18 | #define KEY_READ(name, prop, format_string) \ |
e9f207f0 JB |
19 | static ssize_t key_##name##_read(struct file *file, \ |
20 | char __user *userbuf, \ | |
21 | size_t count, loff_t *ppos) \ | |
22 | { \ | |
e9f207f0 | 23 | struct ieee80211_key *key = file->private_data; \ |
07caf9d6 EP |
24 | return mac80211_format_buffer(userbuf, count, ppos, \ |
25 | format_string, key->prop); \ | |
e9f207f0 | 26 | } |
07caf9d6 EP |
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") | |
e9f207f0 JB |
29 | |
30 | #define KEY_OPS(name) \ | |
31 | static const struct file_operations key_ ##name## _ops = { \ | |
32 | .read = key_##name##_read, \ | |
234e3405 | 33 | .open = simple_open, \ |
2b18ab36 | 34 | .llseek = generic_file_llseek, \ |
e9f207f0 JB |
35 | } |
36 | ||
37 | #define KEY_FILE(name, format) \ | |
38 | KEY_READ_##format(name) \ | |
39 | KEY_OPS(name) | |
40 | ||
07caf9d6 EP |
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") | |
8f20fc24 JB |
44 | |
45 | #define KEY_CONF_OPS(name) \ | |
46 | static const struct file_operations key_ ##name## _ops = { \ | |
47 | .read = key_conf_##name##_read, \ | |
234e3405 | 48 | .open = simple_open, \ |
2b18ab36 | 49 | .llseek = generic_file_llseek, \ |
8f20fc24 JB |
50 | } |
51 | ||
52 | #define KEY_CONF_FILE(name, format) \ | |
53 | KEY_CONF_READ_##format(name) \ | |
54 | KEY_CONF_OPS(name) | |
55 | ||
56 | KEY_CONF_FILE(keylen, D); | |
57 | KEY_CONF_FILE(keyidx, D); | |
58 | KEY_CONF_FILE(hw_key_idx, D); | |
11a843b7 | 59 | KEY_FILE(flags, X); |
e9f207f0 | 60 | KEY_FILE(tx_rx_count, D); |
07caf9d6 | 61 | KEY_READ(ifindex, sdata->name, "%s\n"); |
e7a64f12 | 62 | KEY_OPS(ifindex); |
e9f207f0 JB |
63 | |
64 | static ssize_t key_algorithm_read(struct file *file, | |
65 | char __user *userbuf, | |
66 | size_t count, loff_t *ppos) | |
67 | { | |
97359d12 | 68 | char buf[15]; |
e9f207f0 | 69 | struct ieee80211_key *key = file->private_data; |
97359d12 | 70 | u32 c = key->conf.cipher; |
e9f207f0 | 71 | |
97359d12 JB |
72 | sprintf(buf, "%.2x-%.2x-%.2x:%d\n", |
73 | c >> 24, (c >> 16) & 0xff, (c >> 8) & 0xff, c & 0xff); | |
74 | return simple_read_from_buffer(userbuf, count, ppos, buf, strlen(buf)); | |
e9f207f0 JB |
75 | } |
76 | KEY_OPS(algorithm); | |
77 | ||
78 | static ssize_t key_tx_spec_read(struct file *file, char __user *userbuf, | |
79 | size_t count, loff_t *ppos) | |
80 | { | |
aba83a0b | 81 | u64 pn; |
e9f207f0 JB |
82 | char buf[20]; |
83 | int len; | |
84 | struct ieee80211_key *key = file->private_data; | |
85 | ||
97359d12 JB |
86 | switch (key->conf.cipher) { |
87 | case WLAN_CIPHER_SUITE_WEP40: | |
88 | case WLAN_CIPHER_SUITE_WEP104: | |
e9f207f0 | 89 | len = scnprintf(buf, sizeof(buf), "\n"); |
50339a67 | 90 | break; |
97359d12 | 91 | case WLAN_CIPHER_SUITE_TKIP: |
e9f207f0 | 92 | len = scnprintf(buf, sizeof(buf), "%08x %04x\n", |
b0f76b33 HH |
93 | key->u.tkip.tx.iv32, |
94 | key->u.tkip.tx.iv16); | |
50339a67 | 95 | break; |
97359d12 | 96 | case WLAN_CIPHER_SUITE_CCMP: |
aba83a0b | 97 | pn = atomic64_read(&key->u.ccmp.tx_pn); |
e9f207f0 | 98 | len = scnprintf(buf, sizeof(buf), "%02x%02x%02x%02x%02x%02x\n", |
aba83a0b JB |
99 | (u8)(pn >> 40), (u8)(pn >> 32), (u8)(pn >> 24), |
100 | (u8)(pn >> 16), (u8)(pn >> 8), (u8)pn); | |
50339a67 | 101 | break; |
97359d12 | 102 | case WLAN_CIPHER_SUITE_AES_CMAC: |
75396ae6 | 103 | pn = atomic64_read(&key->u.aes_cmac.tx_pn); |
3cfcf6ac | 104 | len = scnprintf(buf, sizeof(buf), "%02x%02x%02x%02x%02x%02x\n", |
75396ae6 JB |
105 | (u8)(pn >> 40), (u8)(pn >> 32), (u8)(pn >> 24), |
106 | (u8)(pn >> 16), (u8)(pn >> 8), (u8)pn); | |
3cfcf6ac | 107 | break; |
e9f207f0 JB |
108 | default: |
109 | return 0; | |
110 | } | |
111 | return simple_read_from_buffer(userbuf, count, ppos, buf, len); | |
112 | } | |
113 | KEY_OPS(tx_spec); | |
114 | ||
115 | static ssize_t key_rx_spec_read(struct file *file, char __user *userbuf, | |
116 | size_t count, loff_t *ppos) | |
117 | { | |
118 | struct ieee80211_key *key = file->private_data; | |
5a306f58 | 119 | char buf[14*IEEE80211_NUM_TIDS+1], *p = buf; |
e9f207f0 JB |
120 | int i, len; |
121 | const u8 *rpn; | |
122 | ||
97359d12 JB |
123 | switch (key->conf.cipher) { |
124 | case WLAN_CIPHER_SUITE_WEP40: | |
125 | case WLAN_CIPHER_SUITE_WEP104: | |
e9f207f0 | 126 | len = scnprintf(buf, sizeof(buf), "\n"); |
50339a67 | 127 | break; |
97359d12 | 128 | case WLAN_CIPHER_SUITE_TKIP: |
5a306f58 | 129 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) |
e9f207f0 JB |
130 | p += scnprintf(p, sizeof(buf)+buf-p, |
131 | "%08x %04x\n", | |
b0f76b33 HH |
132 | key->u.tkip.rx[i].iv32, |
133 | key->u.tkip.rx[i].iv16); | |
e9f207f0 | 134 | len = p - buf; |
50339a67 | 135 | break; |
97359d12 | 136 | case WLAN_CIPHER_SUITE_CCMP: |
5a306f58 | 137 | for (i = 0; i < IEEE80211_NUM_TIDS + 1; i++) { |
e9f207f0 JB |
138 | rpn = key->u.ccmp.rx_pn[i]; |
139 | p += scnprintf(p, sizeof(buf)+buf-p, | |
140 | "%02x%02x%02x%02x%02x%02x\n", | |
141 | rpn[0], rpn[1], rpn[2], | |
142 | rpn[3], rpn[4], rpn[5]); | |
143 | } | |
144 | len = p - buf; | |
50339a67 | 145 | break; |
97359d12 | 146 | case WLAN_CIPHER_SUITE_AES_CMAC: |
3cfcf6ac JM |
147 | rpn = key->u.aes_cmac.rx_pn; |
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]); | |
152 | len = p - buf; | |
153 | break; | |
e9f207f0 JB |
154 | default: |
155 | return 0; | |
156 | } | |
157 | return simple_read_from_buffer(userbuf, count, ppos, buf, len); | |
158 | } | |
159 | KEY_OPS(rx_spec); | |
160 | ||
161 | static ssize_t key_replays_read(struct file *file, char __user *userbuf, | |
162 | size_t count, loff_t *ppos) | |
163 | { | |
164 | struct ieee80211_key *key = file->private_data; | |
165 | char buf[20]; | |
166 | int len; | |
167 | ||
97359d12 JB |
168 | switch (key->conf.cipher) { |
169 | case WLAN_CIPHER_SUITE_CCMP: | |
3cfcf6ac JM |
170 | len = scnprintf(buf, sizeof(buf), "%u\n", key->u.ccmp.replays); |
171 | break; | |
97359d12 | 172 | case WLAN_CIPHER_SUITE_AES_CMAC: |
3cfcf6ac JM |
173 | len = scnprintf(buf, sizeof(buf), "%u\n", |
174 | key->u.aes_cmac.replays); | |
175 | break; | |
176 | default: | |
e9f207f0 | 177 | return 0; |
3cfcf6ac | 178 | } |
e9f207f0 JB |
179 | return simple_read_from_buffer(userbuf, count, ppos, buf, len); |
180 | } | |
181 | KEY_OPS(replays); | |
182 | ||
3cfcf6ac JM |
183 | static ssize_t key_icverrors_read(struct file *file, char __user *userbuf, |
184 | size_t count, loff_t *ppos) | |
185 | { | |
186 | struct ieee80211_key *key = file->private_data; | |
187 | char buf[20]; | |
188 | int len; | |
189 | ||
97359d12 JB |
190 | switch (key->conf.cipher) { |
191 | case WLAN_CIPHER_SUITE_AES_CMAC: | |
3cfcf6ac JM |
192 | len = scnprintf(buf, sizeof(buf), "%u\n", |
193 | key->u.aes_cmac.icverrors); | |
194 | break; | |
195 | default: | |
196 | return 0; | |
197 | } | |
198 | return simple_read_from_buffer(userbuf, count, ppos, buf, len); | |
199 | } | |
200 | KEY_OPS(icverrors); | |
201 | ||
b98ea058 S |
202 | static ssize_t key_mic_failures_read(struct file *file, char __user *userbuf, |
203 | size_t count, loff_t *ppos) | |
204 | { | |
205 | struct ieee80211_key *key = file->private_data; | |
206 | char buf[20]; | |
207 | int len; | |
208 | ||
209 | if (key->conf.cipher != WLAN_CIPHER_SUITE_TKIP) | |
210 | return -EINVAL; | |
211 | ||
212 | len = scnprintf(buf, sizeof(buf), "%u\n", key->u.tkip.mic_failures); | |
213 | ||
214 | return simple_read_from_buffer(userbuf, count, ppos, buf, len); | |
215 | } | |
216 | KEY_OPS(mic_failures); | |
217 | ||
e9f207f0 JB |
218 | static ssize_t key_key_read(struct file *file, char __user *userbuf, |
219 | size_t count, loff_t *ppos) | |
220 | { | |
221 | struct ieee80211_key *key = file->private_data; | |
520efd1a | 222 | int i, bufsize = 2 * key->conf.keylen + 2; |
e9f207f0 JB |
223 | char *buf = kmalloc(bufsize, GFP_KERNEL); |
224 | char *p = buf; | |
520efd1a JJ |
225 | ssize_t res; |
226 | ||
227 | if (!buf) | |
228 | return -ENOMEM; | |
e9f207f0 | 229 | |
8f20fc24 JB |
230 | for (i = 0; i < key->conf.keylen; i++) |
231 | p += scnprintf(p, bufsize + buf - p, "%02x", key->conf.key[i]); | |
e9f207f0 JB |
232 | p += scnprintf(p, bufsize+buf-p, "\n"); |
233 | res = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); | |
234 | kfree(buf); | |
235 | return res; | |
236 | } | |
237 | KEY_OPS(key); | |
238 | ||
239 | #define DEBUGFS_ADD(name) \ | |
7bcfaf2f JB |
240 | debugfs_create_file(#name, 0400, key->debugfs.dir, \ |
241 | key, &key_##name##_ops); | |
e9f207f0 | 242 | |
3b96766f | 243 | void ieee80211_debugfs_key_add(struct ieee80211_key *key) |
9446f3ef | 244 | { |
50339a67 | 245 | static int keycount; |
9446f3ef | 246 | char buf[100]; |
3b96766f | 247 | struct sta_info *sta; |
e9f207f0 | 248 | |
3b96766f | 249 | if (!key->local->debugfs.keys) |
e9f207f0 JB |
250 | return; |
251 | ||
50339a67 | 252 | sprintf(buf, "%d", keycount); |
d9c58f30 | 253 | key->debugfs.cnt = keycount; |
50339a67 | 254 | keycount++; |
e9f207f0 | 255 | key->debugfs.dir = debugfs_create_dir(buf, |
3b96766f | 256 | key->local->debugfs.keys); |
e9f207f0 JB |
257 | |
258 | if (!key->debugfs.dir) | |
259 | return; | |
260 | ||
40b275b6 JB |
261 | sta = key->sta; |
262 | if (sta) { | |
9446f3ef JB |
263 | sprintf(buf, "../../netdev:%s/stations/%pM", |
264 | sta->sdata->name, sta->sta.addr); | |
3b96766f JB |
265 | key->debugfs.stalink = |
266 | debugfs_create_symlink("station", key->debugfs.dir, buf); | |
40b275b6 | 267 | } |
3b96766f | 268 | |
e9f207f0 | 269 | DEBUGFS_ADD(keylen); |
8f20fc24 | 270 | DEBUGFS_ADD(flags); |
e9f207f0 JB |
271 | DEBUGFS_ADD(keyidx); |
272 | DEBUGFS_ADD(hw_key_idx); | |
273 | DEBUGFS_ADD(tx_rx_count); | |
274 | DEBUGFS_ADD(algorithm); | |
275 | DEBUGFS_ADD(tx_spec); | |
276 | DEBUGFS_ADD(rx_spec); | |
277 | DEBUGFS_ADD(replays); | |
3cfcf6ac | 278 | DEBUGFS_ADD(icverrors); |
b98ea058 | 279 | DEBUGFS_ADD(mic_failures); |
e9f207f0 | 280 | DEBUGFS_ADD(key); |
e7a64f12 | 281 | DEBUGFS_ADD(ifindex); |
e9f207f0 JB |
282 | }; |
283 | ||
e9f207f0 JB |
284 | void ieee80211_debugfs_key_remove(struct ieee80211_key *key) |
285 | { | |
286 | if (!key) | |
287 | return; | |
288 | ||
7bcfaf2f | 289 | debugfs_remove_recursive(key->debugfs.dir); |
e9f207f0 JB |
290 | key->debugfs.dir = NULL; |
291 | } | |
f7e0104c JB |
292 | |
293 | void ieee80211_debugfs_key_update_default(struct ieee80211_sub_if_data *sdata) | |
e9f207f0 JB |
294 | { |
295 | char buf[50]; | |
78520cad | 296 | struct ieee80211_key *key; |
e9f207f0 | 297 | |
7bcfaf2f | 298 | if (!sdata->debugfs.dir) |
e9f207f0 JB |
299 | return; |
300 | ||
f7e0104c | 301 | lockdep_assert_held(&sdata->local->key_mtx); |
78520cad | 302 | |
135792ec JB |
303 | if (sdata->debugfs.default_unicast_key) { |
304 | debugfs_remove(sdata->debugfs.default_unicast_key); | |
305 | sdata->debugfs.default_unicast_key = NULL; | |
306 | } | |
307 | ||
f7e0104c | 308 | if (sdata->default_unicast_key) { |
40b275b6 JB |
309 | key = key_mtx_dereference(sdata->local, |
310 | sdata->default_unicast_key); | |
78520cad | 311 | sprintf(buf, "../keys/%d", key->debugfs.cnt); |
f7e0104c JB |
312 | sdata->debugfs.default_unicast_key = |
313 | debugfs_create_symlink("default_unicast_key", | |
7bcfaf2f | 314 | sdata->debugfs.dir, buf); |
135792ec JB |
315 | } |
316 | ||
317 | if (sdata->debugfs.default_multicast_key) { | |
318 | debugfs_remove(sdata->debugfs.default_multicast_key); | |
319 | sdata->debugfs.default_multicast_key = NULL; | |
f7e0104c | 320 | } |
e9f207f0 | 321 | |
f7e0104c | 322 | if (sdata->default_multicast_key) { |
40b275b6 JB |
323 | key = key_mtx_dereference(sdata->local, |
324 | sdata->default_multicast_key); | |
f7e0104c JB |
325 | sprintf(buf, "../keys/%d", key->debugfs.cnt); |
326 | sdata->debugfs.default_multicast_key = | |
327 | debugfs_create_symlink("default_multicast_key", | |
328 | sdata->debugfs.dir, buf); | |
f7e0104c | 329 | } |
e9f207f0 | 330 | } |
e9f207f0 | 331 | |
3cfcf6ac JM |
332 | void ieee80211_debugfs_key_add_mgmt_default(struct ieee80211_sub_if_data *sdata) |
333 | { | |
334 | char buf[50]; | |
335 | struct ieee80211_key *key; | |
336 | ||
7bcfaf2f | 337 | if (!sdata->debugfs.dir) |
3cfcf6ac JM |
338 | return; |
339 | ||
40b275b6 JB |
340 | key = key_mtx_dereference(sdata->local, |
341 | sdata->default_mgmt_key); | |
3cfcf6ac JM |
342 | if (key) { |
343 | sprintf(buf, "../keys/%d", key->debugfs.cnt); | |
7bcfaf2f | 344 | sdata->debugfs.default_mgmt_key = |
3cfcf6ac | 345 | debugfs_create_symlink("default_mgmt_key", |
7bcfaf2f | 346 | sdata->debugfs.dir, buf); |
3cfcf6ac JM |
347 | } else |
348 | ieee80211_debugfs_key_remove_mgmt_default(sdata); | |
349 | } | |
350 | ||
351 | void ieee80211_debugfs_key_remove_mgmt_default(struct ieee80211_sub_if_data *sdata) | |
352 | { | |
353 | if (!sdata) | |
354 | return; | |
355 | ||
7bcfaf2f JB |
356 | debugfs_remove(sdata->debugfs.default_mgmt_key); |
357 | sdata->debugfs.default_mgmt_key = NULL; | |
3cfcf6ac JM |
358 | } |
359 | ||
e9f207f0 JB |
360 | void ieee80211_debugfs_key_sta_del(struct ieee80211_key *key, |
361 | struct sta_info *sta) | |
362 | { | |
363 | debugfs_remove(key->debugfs.stalink); | |
364 | key->debugfs.stalink = NULL; | |
365 | } |