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Diffstat (limited to 'net/mac80211/debugfs_key.c')
-rw-r--r--net/mac80211/debugfs_key.c252
1 files changed, 252 insertions, 0 deletions
diff --git a/net/mac80211/debugfs_key.c b/net/mac80211/debugfs_key.c
new file mode 100644
index 000000000000..7d56dc9e7326
--- /dev/null
+++ b/net/mac80211/debugfs_key.c
@@ -0,0 +1,252 @@
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, buflen, format_string) \
18static 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->name); \
25 return simple_read_from_buffer(userbuf, count, ppos, buf, res); \
26}
27#define KEY_READ_D(name) KEY_READ(name, 20, "%d\n")
28
29#define KEY_OPS(name) \
30static const struct file_operations key_ ##name## _ops = { \
31 .read = key_##name##_read, \
32 .open = mac80211_open_file_generic, \
33}
34
35#define KEY_FILE(name, format) \
36 KEY_READ_##format(name) \
37 KEY_OPS(name)
38
39KEY_FILE(keylen, D);
40KEY_FILE(force_sw_encrypt, D);
41KEY_FILE(keyidx, D);
42KEY_FILE(hw_key_idx, D);
43KEY_FILE(tx_rx_count, D);
44
45static ssize_t key_algorithm_read(struct file *file,
46 char __user *userbuf,
47 size_t count, loff_t *ppos)
48{
49 char *alg;
50 struct ieee80211_key *key = file->private_data;
51
52 switch (key->alg) {
53 case ALG_WEP:
54 alg = "WEP\n";
55 break;
56 case ALG_TKIP:
57 alg = "TKIP\n";
58 break;
59 case ALG_CCMP:
60 alg = "CCMP\n";
61 break;
62 default:
63 return 0;
64 }
65 return simple_read_from_buffer(userbuf, count, ppos, alg, strlen(alg));
66}
67KEY_OPS(algorithm);
68
69static ssize_t key_tx_spec_read(struct file *file, char __user *userbuf,
70 size_t count, loff_t *ppos)
71{
72 const u8 *tpn;
73 char buf[20];
74 int len;
75 struct ieee80211_key *key = file->private_data;
76
77 switch (key->alg) {
78 case ALG_WEP:
79 len = scnprintf(buf, sizeof(buf), "\n");
80 case ALG_TKIP:
81 len = scnprintf(buf, sizeof(buf), "%08x %04x\n",
82 key->u.tkip.iv32,
83 key->u.tkip.iv16);
84 case ALG_CCMP:
85 tpn = key->u.ccmp.tx_pn;
86 len = scnprintf(buf, sizeof(buf), "%02x%02x%02x%02x%02x%02x\n",
87 tpn[0], tpn[1], tpn[2], tpn[3], tpn[4], tpn[5]);
88 default:
89 return 0;
90 }
91 return simple_read_from_buffer(userbuf, count, ppos, buf, len);
92}
93KEY_OPS(tx_spec);
94
95static ssize_t key_rx_spec_read(struct file *file, char __user *userbuf,
96 size_t count, loff_t *ppos)
97{
98 struct ieee80211_key *key = file->private_data;
99 char buf[14*NUM_RX_DATA_QUEUES+1], *p = buf;
100 int i, len;
101 const u8 *rpn;
102
103 switch (key->alg) {
104 case ALG_WEP:
105 len = scnprintf(buf, sizeof(buf), "\n");
106 case ALG_TKIP:
107 for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
108 p += scnprintf(p, sizeof(buf)+buf-p,
109 "%08x %04x\n",
110 key->u.tkip.iv32_rx[i],
111 key->u.tkip.iv16_rx[i]);
112 len = p - buf;
113 case ALG_CCMP:
114 for (i = 0; i < NUM_RX_DATA_QUEUES; i++) {
115 rpn = key->u.ccmp.rx_pn[i];
116 p += scnprintf(p, sizeof(buf)+buf-p,
117 "%02x%02x%02x%02x%02x%02x\n",
118 rpn[0], rpn[1], rpn[2],
119 rpn[3], rpn[4], rpn[5]);
120 }
121 len = p - buf;
122 default:
123 return 0;
124 }
125 return simple_read_from_buffer(userbuf, count, ppos, buf, len);
126}
127KEY_OPS(rx_spec);
128
129static ssize_t key_replays_read(struct file *file, char __user *userbuf,
130 size_t count, loff_t *ppos)
131{
132 struct ieee80211_key *key = file->private_data;
133 char buf[20];
134 int len;
135
136 if (key->alg != ALG_CCMP)
137 return 0;
138 len = scnprintf(buf, sizeof(buf), "%u\n", key->u.ccmp.replays);
139 return simple_read_from_buffer(userbuf, count, ppos, buf, len);
140}
141KEY_OPS(replays);
142
143static ssize_t key_key_read(struct file *file, char __user *userbuf,
144 size_t count, loff_t *ppos)
145{
146 struct ieee80211_key *key = file->private_data;
147 int i, res, bufsize = 2*key->keylen+2;
148 char *buf = kmalloc(bufsize, GFP_KERNEL);
149 char *p = buf;
150
151 for (i = 0; i < key->keylen; i++)
152 p += scnprintf(p, bufsize+buf-p, "%02x", key->key[i]);
153 p += scnprintf(p, bufsize+buf-p, "\n");
154 res = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
155 kfree(buf);
156 return res;
157}
158KEY_OPS(key);
159
160#define DEBUGFS_ADD(name) \
161 key->debugfs.name = debugfs_create_file(#name, 0400,\
162 key->debugfs.dir, key, &key_##name##_ops);
163
164void ieee80211_debugfs_key_add(struct ieee80211_local *local,
165 struct ieee80211_key *key)
166{
167 char buf[20];
168
169 if (!local->debugfs.keys)
170 return;
171
172 sprintf(buf, "%d", key->keyidx);
173 key->debugfs.dir = debugfs_create_dir(buf,
174 local->debugfs.keys);
175
176 if (!key->debugfs.dir)
177 return;
178
179 DEBUGFS_ADD(keylen);
180 DEBUGFS_ADD(force_sw_encrypt);
181 DEBUGFS_ADD(keyidx);
182 DEBUGFS_ADD(hw_key_idx);
183 DEBUGFS_ADD(tx_rx_count);
184 DEBUGFS_ADD(algorithm);
185 DEBUGFS_ADD(tx_spec);
186 DEBUGFS_ADD(rx_spec);
187 DEBUGFS_ADD(replays);
188 DEBUGFS_ADD(key);
189};
190
191#define DEBUGFS_DEL(name) \
192 debugfs_remove(key->debugfs.name); key->debugfs.name = NULL;
193
194void ieee80211_debugfs_key_remove(struct ieee80211_key *key)
195{
196 if (!key)
197 return;
198
199 DEBUGFS_DEL(keylen);
200 DEBUGFS_DEL(force_sw_encrypt);
201 DEBUGFS_DEL(keyidx);
202 DEBUGFS_DEL(hw_key_idx);
203 DEBUGFS_DEL(tx_rx_count);
204 DEBUGFS_DEL(algorithm);
205 DEBUGFS_DEL(tx_spec);
206 DEBUGFS_DEL(rx_spec);
207 DEBUGFS_DEL(replays);
208 DEBUGFS_DEL(key);
209
210 debugfs_remove(key->debugfs.stalink);
211 key->debugfs.stalink = NULL;
212 debugfs_remove(key->debugfs.dir);
213 key->debugfs.dir = NULL;
214}
215void ieee80211_debugfs_key_add_default(struct ieee80211_sub_if_data *sdata)
216{
217 char buf[50];
218
219 if (!sdata->debugfsdir)
220 return;
221
222 sprintf(buf, "../keys/%d", sdata->default_key->keyidx);
223 sdata->debugfs.default_key =
224 debugfs_create_symlink("default_key", sdata->debugfsdir, buf);
225}
226void ieee80211_debugfs_key_remove_default(struct ieee80211_sub_if_data *sdata)
227{
228 if (!sdata)
229 return;
230
231 debugfs_remove(sdata->debugfs.default_key);
232 sdata->debugfs.default_key = NULL;
233}
234void ieee80211_debugfs_key_sta_link(struct ieee80211_key *key,
235 struct sta_info *sta)
236{
237 char buf[50];
238
239 if (!key->debugfs.dir)
240 return;
241
242 sprintf(buf, "../sta/" MAC_FMT, MAC_ARG(sta->addr));
243 key->debugfs.stalink =
244 debugfs_create_symlink("station", key->debugfs.dir, buf);
245}
246
247void ieee80211_debugfs_key_sta_del(struct ieee80211_key *key,
248 struct sta_info *sta)
249{
250 debugfs_remove(key->debugfs.stalink);
251 key->debugfs.stalink = NULL;
252}
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