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11#include <linux/kobject.h>
12#include <linux/slab.h>
13#include "ieee80211_i.h"
14#include "key.h"
15#include "debugfs.h"
16#include "debugfs_key.h"
17
18#define KEY_READ(name, prop, buflen, format_string) \
19static ssize_t key_##name##_read(struct file *file, \
20 char __user *userbuf, \
21 size_t count, loff_t *ppos) \
22{ \
23 char buf[buflen]; \
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); \
27}
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")
30
31#define KEY_OPS(name) \
32static const struct file_operations key_ ##name## _ops = { \
33 .read = key_##name##_read, \
34 .open = mac80211_open_file_generic, \
35}
36
37#define KEY_FILE(name, format) \
38 KEY_READ_##format(name) \
39 KEY_OPS(name)
40
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")
44
45#define KEY_CONF_OPS(name) \
46static const struct file_operations key_ ##name## _ops = { \
47 .read = key_conf_##name##_read, \
48 .open = mac80211_open_file_generic, \
49}
50
51#define KEY_CONF_FILE(name, format) \
52 KEY_CONF_READ_##format(name) \
53 KEY_CONF_OPS(name)
54
55KEY_CONF_FILE(keylen, D);
56KEY_CONF_FILE(keyidx, D);
57KEY_CONF_FILE(hw_key_idx, D);
58KEY_FILE(flags, X);
59KEY_FILE(tx_rx_count, D);
60KEY_READ(ifindex, sdata->name, IFNAMSIZ + 2, "%s\n");
61KEY_OPS(ifindex);
62
63static ssize_t key_algorithm_read(struct file *file,
64 char __user *userbuf,
65 size_t count, loff_t *ppos)
66{
67 char *alg;
68 struct ieee80211_key *key = file->private_data;
69
70 switch (key->conf.alg) {
71 case ALG_WEP:
72 alg = "WEP\n";
73 break;
74 case ALG_TKIP:
75 alg = "TKIP\n";
76 break;
77 case ALG_CCMP:
78 alg = "CCMP\n";
79 break;
80 case ALG_AES_CMAC:
81 alg = "AES-128-CMAC\n";
82 break;
83 default:
84 return 0;
85 }
86 return simple_read_from_buffer(userbuf, count, ppos, alg, strlen(alg));
87}
88KEY_OPS(algorithm);
89
90static ssize_t key_tx_spec_read(struct file *file, char __user *userbuf,
91 size_t count, loff_t *ppos)
92{
93 const u8 *tpn;
94 char buf[20];
95 int len;
96 struct ieee80211_key *key = file->private_data;
97
98 switch (key->conf.alg) {
99 case ALG_WEP:
100 len = scnprintf(buf, sizeof(buf), "\n");
101 break;
102 case ALG_TKIP:
103 len = scnprintf(buf, sizeof(buf), "%08x %04x\n",
104 key->u.tkip.tx.iv32,
105 key->u.tkip.tx.iv16);
106 break;
107 case ALG_CCMP:
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]);
111 break;
112 case ALG_AES_CMAC:
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],
116 tpn[5]);
117 break;
118 default:
119 return 0;
120 }
121 return simple_read_from_buffer(userbuf, count, ppos, buf, len);
122}
123KEY_OPS(tx_spec);
124
125static ssize_t key_rx_spec_read(struct file *file, char __user *userbuf,
126 size_t count, loff_t *ppos)
127{
128 struct ieee80211_key *key = file->private_data;
129 char buf[14*NUM_RX_DATA_QUEUES+1], *p = buf;
130 int i, len;
131 const u8 *rpn;
132
133 switch (key->conf.alg) {
134 case ALG_WEP:
135 len = scnprintf(buf, sizeof(buf), "\n");
136 break;
137 case ALG_TKIP:
138 for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
139 p += scnprintf(p, sizeof(buf)+buf-p,
140 "%08x %04x\n",
141 key->u.tkip.rx[i].iv32,
142 key->u.tkip.rx[i].iv16);
143 len = p - buf;
144 break;
145 case ALG_CCMP:
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]);
152 }
153 len = p - buf;
154 break;
155 case ALG_AES_CMAC:
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]);
161 len = p - buf;
162 break;
163 default:
164 return 0;
165 }
166 return simple_read_from_buffer(userbuf, count, ppos, buf, len);
167}
168KEY_OPS(rx_spec);
169
170static ssize_t key_replays_read(struct file *file, char __user *userbuf,
171 size_t count, loff_t *ppos)
172{
173 struct ieee80211_key *key = file->private_data;
174 char buf[20];
175 int len;
176
177 switch (key->conf.alg) {
178 case ALG_CCMP:
179 len = scnprintf(buf, sizeof(buf), "%u\n", key->u.ccmp.replays);
180 break;
181 case ALG_AES_CMAC:
182 len = scnprintf(buf, sizeof(buf), "%u\n",
183 key->u.aes_cmac.replays);
184 break;
185 default:
186 return 0;
187 }
188 return simple_read_from_buffer(userbuf, count, ppos, buf, len);
189}
190KEY_OPS(replays);
191
192static ssize_t key_icverrors_read(struct file *file, char __user *userbuf,
193 size_t count, loff_t *ppos)
194{
195 struct ieee80211_key *key = file->private_data;
196 char buf[20];
197 int len;
198
199 switch (key->conf.alg) {
200 case ALG_AES_CMAC:
201 len = scnprintf(buf, sizeof(buf), "%u\n",
202 key->u.aes_cmac.icverrors);
203 break;
204 default:
205 return 0;
206 }
207 return simple_read_from_buffer(userbuf, count, ppos, buf, len);
208}
209KEY_OPS(icverrors);
210
211static ssize_t key_key_read(struct file *file, char __user *userbuf,
212 size_t count, loff_t *ppos)
213{
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);
217 char *p = buf;
218
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);
223 kfree(buf);
224 return res;
225}
226KEY_OPS(key);
227
228#define DEBUGFS_ADD(name) \
229 debugfs_create_file(#name, 0400, key->debugfs.dir, \
230 key, &key_##name##_ops);
231
232void ieee80211_debugfs_key_add(struct ieee80211_key *key)
233 {
234 static int keycount;
235 char buf[50];
236 struct sta_info *sta;
237
238 if (!key->local->debugfs.keys)
239 return;
240
241 sprintf(buf, "%d", keycount);
242 key->debugfs.cnt = keycount;
243 keycount++;
244 key->debugfs.dir = debugfs_create_dir(buf,
245 key->local->debugfs.keys);
246
247 if (!key->debugfs.dir)
248 return;
249
250 rcu_read_lock();
251 sta = rcu_dereference(key->sta);
252 if (sta)
253 sprintf(buf, "../../stations/%pM", sta->sta.addr);
254 rcu_read_unlock();
255
256
257 if (sta)
258 key->debugfs.stalink =
259 debugfs_create_symlink("station", key->debugfs.dir, buf);
260
261 DEBUGFS_ADD(keylen);
262 DEBUGFS_ADD(flags);
263 DEBUGFS_ADD(keyidx);
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);
271 DEBUGFS_ADD(key);
272 DEBUGFS_ADD(ifindex);
273};
274
275void ieee80211_debugfs_key_remove(struct ieee80211_key *key)
276{
277 if (!key)
278 return;
279
280 debugfs_remove_recursive(key->debugfs.dir);
281 key->debugfs.dir = NULL;
282}
283void ieee80211_debugfs_key_add_default(struct ieee80211_sub_if_data *sdata)
284{
285 char buf[50];
286 struct ieee80211_key *key;
287
288 if (!sdata->debugfs.dir)
289 return;
290
291
292
293 key = sdata->default_key;
294 if (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);
299 } else
300 ieee80211_debugfs_key_remove_default(sdata);
301}
302
303void ieee80211_debugfs_key_remove_default(struct ieee80211_sub_if_data *sdata)
304{
305 if (!sdata)
306 return;
307
308 debugfs_remove(sdata->debugfs.default_key);
309 sdata->debugfs.default_key = NULL;
310}
311
312void ieee80211_debugfs_key_add_mgmt_default(struct ieee80211_sub_if_data *sdata)
313{
314 char buf[50];
315 struct ieee80211_key *key;
316
317 if (!sdata->debugfs.dir)
318 return;
319
320
321
322 key = sdata->default_mgmt_key;
323 if (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);
328 } else
329 ieee80211_debugfs_key_remove_mgmt_default(sdata);
330}
331
332void ieee80211_debugfs_key_remove_mgmt_default(struct ieee80211_sub_if_data *sdata)
333{
334 if (!sdata)
335 return;
336
337 debugfs_remove(sdata->debugfs.default_mgmt_key);
338 sdata->debugfs.default_mgmt_key = NULL;
339}
340
341void ieee80211_debugfs_key_sta_del(struct ieee80211_key *key,
342 struct sta_info *sta)
343{
344 debugfs_remove(key->debugfs.stalink);
345 key->debugfs.stalink = NULL;
346}
347
