fix up hostapd for mac80211
[openwrt/openwrt.git] / package / mac80211 / src / net / mac80211 / debugfs_key.c
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>
12 #include "ieee80211_i.h"
13 #include "ieee80211_key.h"
14 #include "debugfs.h"
15 #include "debugfs_key.h"
16
17 #define KEY_READ(name, prop, buflen, format_string) \
18 static ssize_t key_##name##_read(struct file *file, \
19 char __user *userbuf, \
20 size_t count, loff_t *ppos) \
21 { \
22 char buf[buflen]; \
23 struct ieee80211_key *key = file->private_data; \
24 int res = scnprintf(buf, buflen, format_string, key->prop); \
25 return simple_read_from_buffer(userbuf, count, ppos, buf, res); \
26 }
27 #define KEY_READ_D(name) KEY_READ(name, name, 20, "%d\n")
28 #define KEY_READ_X(name) KEY_READ(name, name, 20, "0x%x\n")
29
30 #define KEY_OPS(name) \
31 static const struct file_operations key_ ##name## _ops = { \
32 .read = key_##name##_read, \
33 .open = mac80211_open_file_generic, \
34 }
35
36 #define KEY_FILE(name, format) \
37 KEY_READ_##format(name) \
38 KEY_OPS(name)
39
40 #define KEY_CONF_READ(name, buflen, format_string) \
41 KEY_READ(conf_##name, conf.name, buflen, format_string)
42 #define KEY_CONF_READ_D(name) KEY_CONF_READ(name, 20, "%d\n")
43
44 #define KEY_CONF_OPS(name) \
45 static const struct file_operations key_ ##name## _ops = { \
46 .read = key_conf_##name##_read, \
47 .open = mac80211_open_file_generic, \
48 }
49
50 #define KEY_CONF_FILE(name, format) \
51 KEY_CONF_READ_##format(name) \
52 KEY_CONF_OPS(name)
53
54 KEY_CONF_FILE(keylen, D);
55 KEY_CONF_FILE(keyidx, D);
56 KEY_CONF_FILE(hw_key_idx, D);
57 KEY_FILE(flags, X);
58 KEY_FILE(tx_rx_count, D);
59 KEY_READ(ifindex, sdata->dev->ifindex, 20, "%d\n");
60 KEY_OPS(ifindex);
61
62 static ssize_t key_algorithm_read(struct file *file,
63 char __user *userbuf,
64 size_t count, loff_t *ppos)
65 {
66 char *alg;
67 struct ieee80211_key *key = file->private_data;
68
69 switch (key->conf.alg) {
70 case ALG_WEP:
71 alg = "WEP\n";
72 break;
73 case ALG_TKIP:
74 alg = "TKIP\n";
75 break;
76 case ALG_CCMP:
77 alg = "CCMP\n";
78 break;
79 default:
80 return 0;
81 }
82 return simple_read_from_buffer(userbuf, count, ppos, alg, strlen(alg));
83 }
84 KEY_OPS(algorithm);
85
86 static ssize_t key_tx_spec_read(struct file *file, char __user *userbuf,
87 size_t count, loff_t *ppos)
88 {
89 const u8 *tpn;
90 char buf[20];
91 int len;
92 struct ieee80211_key *key = file->private_data;
93
94 switch (key->conf.alg) {
95 case ALG_WEP:
96 len = scnprintf(buf, sizeof(buf), "\n");
97 break;
98 case ALG_TKIP:
99 len = scnprintf(buf, sizeof(buf), "%08x %04x\n",
100 key->u.tkip.iv32,
101 key->u.tkip.iv16);
102 break;
103 case ALG_CCMP:
104 tpn = key->u.ccmp.tx_pn;
105 len = scnprintf(buf, sizeof(buf), "%02x%02x%02x%02x%02x%02x\n",
106 tpn[0], tpn[1], tpn[2], tpn[3], tpn[4], tpn[5]);
107 break;
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;
119 char buf[14*NUM_RX_DATA_QUEUES+1], *p = buf;
120 int i, len;
121 const u8 *rpn;
122
123 switch (key->conf.alg) {
124 case ALG_WEP:
125 len = scnprintf(buf, sizeof(buf), "\n");
126 break;
127 case ALG_TKIP:
128 for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
129 p += scnprintf(p, sizeof(buf)+buf-p,
130 "%08x %04x\n",
131 key->u.tkip.iv32_rx[i],
132 key->u.tkip.iv16_rx[i]);
133 len = p - buf;
134 break;
135 case ALG_CCMP:
136 for (i = 0; i < NUM_RX_DATA_QUEUES; i++) {
137 rpn = key->u.ccmp.rx_pn[i];
138 p += scnprintf(p, sizeof(buf)+buf-p,
139 "%02x%02x%02x%02x%02x%02x\n",
140 rpn[0], rpn[1], rpn[2],
141 rpn[3], rpn[4], rpn[5]);
142 }
143 len = p - buf;
144 break;
145 default:
146 return 0;
147 }
148 return simple_read_from_buffer(userbuf, count, ppos, buf, len);
149 }
150 KEY_OPS(rx_spec);
151
152 static ssize_t key_replays_read(struct file *file, char __user *userbuf,
153 size_t count, loff_t *ppos)
154 {
155 struct ieee80211_key *key = file->private_data;
156 char buf[20];
157 int len;
158
159 if (key->conf.alg != ALG_CCMP)
160 return 0;
161 len = scnprintf(buf, sizeof(buf), "%u\n", key->u.ccmp.replays);
162 return simple_read_from_buffer(userbuf, count, ppos, buf, len);
163 }
164 KEY_OPS(replays);
165
166 static ssize_t key_key_read(struct file *file, char __user *userbuf,
167 size_t count, loff_t *ppos)
168 {
169 struct ieee80211_key *key = file->private_data;
170 int i, res, bufsize = 2 * key->conf.keylen + 2;
171 char *buf = kmalloc(bufsize, GFP_KERNEL);
172 char *p = buf;
173
174 for (i = 0; i < key->conf.keylen; i++)
175 p += scnprintf(p, bufsize + buf - p, "%02x", key->conf.key[i]);
176 p += scnprintf(p, bufsize+buf-p, "\n");
177 res = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
178 kfree(buf);
179 return res;
180 }
181 KEY_OPS(key);
182
183 #define DEBUGFS_ADD(name) \
184 key->debugfs.name = debugfs_create_file(#name, 0400,\
185 key->debugfs.dir, key, &key_##name##_ops);
186
187 void ieee80211_debugfs_key_add(struct ieee80211_local *local,
188 struct ieee80211_key *key)
189 {
190 static int keycount;
191 char buf[20];
192
193 if (!local->debugfs.keys)
194 return;
195
196 sprintf(buf, "%d", keycount);
197 keycount++;
198 key->debugfs.dir = debugfs_create_dir(buf,
199 local->debugfs.keys);
200
201 if (!key->debugfs.dir)
202 return;
203
204 DEBUGFS_ADD(keylen);
205 DEBUGFS_ADD(flags);
206 DEBUGFS_ADD(keyidx);
207 DEBUGFS_ADD(hw_key_idx);
208 DEBUGFS_ADD(tx_rx_count);
209 DEBUGFS_ADD(algorithm);
210 DEBUGFS_ADD(tx_spec);
211 DEBUGFS_ADD(rx_spec);
212 DEBUGFS_ADD(replays);
213 DEBUGFS_ADD(key);
214 DEBUGFS_ADD(ifindex);
215 };
216
217 #define DEBUGFS_DEL(name) \
218 debugfs_remove(key->debugfs.name); key->debugfs.name = NULL;
219
220 void ieee80211_debugfs_key_remove(struct ieee80211_key *key)
221 {
222 if (!key)
223 return;
224
225 DEBUGFS_DEL(keylen);
226 DEBUGFS_DEL(flags);
227 DEBUGFS_DEL(keyidx);
228 DEBUGFS_DEL(hw_key_idx);
229 DEBUGFS_DEL(tx_rx_count);
230 DEBUGFS_DEL(algorithm);
231 DEBUGFS_DEL(tx_spec);
232 DEBUGFS_DEL(rx_spec);
233 DEBUGFS_DEL(replays);
234 DEBUGFS_DEL(key);
235 DEBUGFS_DEL(ifindex);
236
237 debugfs_remove(key->debugfs.stalink);
238 key->debugfs.stalink = NULL;
239 debugfs_remove(key->debugfs.dir);
240 key->debugfs.dir = NULL;
241 }
242 void ieee80211_debugfs_key_add_default(struct ieee80211_sub_if_data *sdata)
243 {
244 char buf[50];
245
246 if (!sdata->debugfsdir)
247 return;
248
249 sprintf(buf, "../keys/%d", sdata->default_key->conf.keyidx);
250 sdata->debugfs.default_key =
251 debugfs_create_symlink("default_key", sdata->debugfsdir, buf);
252 }
253 void ieee80211_debugfs_key_remove_default(struct ieee80211_sub_if_data *sdata)
254 {
255 if (!sdata)
256 return;
257
258 debugfs_remove(sdata->debugfs.default_key);
259 sdata->debugfs.default_key = NULL;
260 }
261 void ieee80211_debugfs_key_sta_link(struct ieee80211_key *key,
262 struct sta_info *sta)
263 {
264 char buf[50];
265
266 if (!key->debugfs.dir)
267 return;
268
269 sprintf(buf, "../../stations/" MAC_FMT, MAC_ARG(sta->addr));
270 key->debugfs.stalink =
271 debugfs_create_symlink("station", key->debugfs.dir, buf);
272 }
273
274 void ieee80211_debugfs_key_sta_del(struct ieee80211_key *key,
275 struct sta_info *sta)
276 {
277 debugfs_remove(key->debugfs.stalink);
278 key->debugfs.stalink = NULL;
279 }