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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> | |
12 | #include "ieee80211_i.h" | |
13 | #include "ieee80211_key.h" | |
14 | #include "debugfs.h" | |
15 | #include "debugfs_key.h" | |
16 | ||
8f20fc24 | 17 | #define KEY_READ(name, prop, buflen, format_string) \ |
e9f207f0 JB |
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; \ | |
8f20fc24 | 24 | int res = scnprintf(buf, buflen, format_string, key->prop); \ |
e9f207f0 JB |
25 | return simple_read_from_buffer(userbuf, count, ppos, buf, res); \ |
26 | } | |
8f20fc24 | 27 | #define KEY_READ_D(name) KEY_READ(name, name, 20, "%d\n") |
e9f207f0 JB |
28 | |
29 | #define KEY_OPS(name) \ | |
30 | static 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 | ||
8f20fc24 JB |
39 | #define KEY_CONF_READ(name, buflen, format_string) \ |
40 | KEY_READ(conf_##name, conf.name, buflen, format_string) | |
41 | #define KEY_CONF_READ_D(name) KEY_CONF_READ(name, 20, "%d\n") | |
42 | #define KEY_CONF_READ_X(name) KEY_CONF_READ(name, 20, "0x%x\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_CONF_FILE(flags, X); | |
e9f207f0 JB |
58 | KEY_FILE(tx_rx_count, D); |
59 | ||
60 | static ssize_t key_algorithm_read(struct file *file, | |
61 | char __user *userbuf, | |
62 | size_t count, loff_t *ppos) | |
63 | { | |
64 | char *alg; | |
65 | struct ieee80211_key *key = file->private_data; | |
66 | ||
8f20fc24 | 67 | switch (key->conf.alg) { |
e9f207f0 JB |
68 | case ALG_WEP: |
69 | alg = "WEP\n"; | |
70 | break; | |
71 | case ALG_TKIP: | |
72 | alg = "TKIP\n"; | |
73 | break; | |
74 | case ALG_CCMP: | |
75 | alg = "CCMP\n"; | |
76 | break; | |
77 | default: | |
78 | return 0; | |
79 | } | |
80 | return simple_read_from_buffer(userbuf, count, ppos, alg, strlen(alg)); | |
81 | } | |
82 | KEY_OPS(algorithm); | |
83 | ||
84 | static ssize_t key_tx_spec_read(struct file *file, char __user *userbuf, | |
85 | size_t count, loff_t *ppos) | |
86 | { | |
87 | const u8 *tpn; | |
88 | char buf[20]; | |
89 | int len; | |
90 | struct ieee80211_key *key = file->private_data; | |
91 | ||
8f20fc24 | 92 | switch (key->conf.alg) { |
e9f207f0 JB |
93 | case ALG_WEP: |
94 | len = scnprintf(buf, sizeof(buf), "\n"); | |
50339a67 | 95 | break; |
e9f207f0 JB |
96 | case ALG_TKIP: |
97 | len = scnprintf(buf, sizeof(buf), "%08x %04x\n", | |
98 | key->u.tkip.iv32, | |
99 | key->u.tkip.iv16); | |
50339a67 | 100 | break; |
e9f207f0 JB |
101 | case ALG_CCMP: |
102 | tpn = key->u.ccmp.tx_pn; | |
103 | len = scnprintf(buf, sizeof(buf), "%02x%02x%02x%02x%02x%02x\n", | |
104 | tpn[0], tpn[1], tpn[2], tpn[3], tpn[4], tpn[5]); | |
50339a67 | 105 | break; |
e9f207f0 JB |
106 | default: |
107 | return 0; | |
108 | } | |
109 | return simple_read_from_buffer(userbuf, count, ppos, buf, len); | |
110 | } | |
111 | KEY_OPS(tx_spec); | |
112 | ||
113 | static ssize_t key_rx_spec_read(struct file *file, char __user *userbuf, | |
114 | size_t count, loff_t *ppos) | |
115 | { | |
116 | struct ieee80211_key *key = file->private_data; | |
117 | char buf[14*NUM_RX_DATA_QUEUES+1], *p = buf; | |
118 | int i, len; | |
119 | const u8 *rpn; | |
120 | ||
8f20fc24 | 121 | switch (key->conf.alg) { |
e9f207f0 JB |
122 | case ALG_WEP: |
123 | len = scnprintf(buf, sizeof(buf), "\n"); | |
50339a67 | 124 | break; |
e9f207f0 JB |
125 | case ALG_TKIP: |
126 | for (i = 0; i < NUM_RX_DATA_QUEUES; i++) | |
127 | p += scnprintf(p, sizeof(buf)+buf-p, | |
128 | "%08x %04x\n", | |
129 | key->u.tkip.iv32_rx[i], | |
130 | key->u.tkip.iv16_rx[i]); | |
131 | len = p - buf; | |
50339a67 | 132 | break; |
e9f207f0 JB |
133 | case ALG_CCMP: |
134 | for (i = 0; i < NUM_RX_DATA_QUEUES; i++) { | |
135 | rpn = key->u.ccmp.rx_pn[i]; | |
136 | p += scnprintf(p, sizeof(buf)+buf-p, | |
137 | "%02x%02x%02x%02x%02x%02x\n", | |
138 | rpn[0], rpn[1], rpn[2], | |
139 | rpn[3], rpn[4], rpn[5]); | |
140 | } | |
141 | len = p - buf; | |
50339a67 | 142 | break; |
e9f207f0 JB |
143 | default: |
144 | return 0; | |
145 | } | |
146 | return simple_read_from_buffer(userbuf, count, ppos, buf, len); | |
147 | } | |
148 | KEY_OPS(rx_spec); | |
149 | ||
150 | static ssize_t key_replays_read(struct file *file, char __user *userbuf, | |
151 | size_t count, loff_t *ppos) | |
152 | { | |
153 | struct ieee80211_key *key = file->private_data; | |
154 | char buf[20]; | |
155 | int len; | |
156 | ||
8f20fc24 | 157 | if (key->conf.alg != ALG_CCMP) |
e9f207f0 JB |
158 | return 0; |
159 | len = scnprintf(buf, sizeof(buf), "%u\n", key->u.ccmp.replays); | |
160 | return simple_read_from_buffer(userbuf, count, ppos, buf, len); | |
161 | } | |
162 | KEY_OPS(replays); | |
163 | ||
164 | static ssize_t key_key_read(struct file *file, char __user *userbuf, | |
165 | size_t count, loff_t *ppos) | |
166 | { | |
167 | struct ieee80211_key *key = file->private_data; | |
8f20fc24 | 168 | int i, res, bufsize = 2 * key->conf.keylen + 2; |
e9f207f0 JB |
169 | char *buf = kmalloc(bufsize, GFP_KERNEL); |
170 | char *p = buf; | |
171 | ||
8f20fc24 JB |
172 | for (i = 0; i < key->conf.keylen; i++) |
173 | p += scnprintf(p, bufsize + buf - p, "%02x", key->conf.key[i]); | |
e9f207f0 JB |
174 | p += scnprintf(p, bufsize+buf-p, "\n"); |
175 | res = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); | |
176 | kfree(buf); | |
177 | return res; | |
178 | } | |
179 | KEY_OPS(key); | |
180 | ||
181 | #define DEBUGFS_ADD(name) \ | |
182 | key->debugfs.name = debugfs_create_file(#name, 0400,\ | |
183 | key->debugfs.dir, key, &key_##name##_ops); | |
184 | ||
185 | void ieee80211_debugfs_key_add(struct ieee80211_local *local, | |
186 | struct ieee80211_key *key) | |
187 | { | |
50339a67 | 188 | static int keycount; |
e9f207f0 JB |
189 | char buf[20]; |
190 | ||
191 | if (!local->debugfs.keys) | |
192 | return; | |
193 | ||
50339a67 JB |
194 | sprintf(buf, "%d", keycount); |
195 | keycount++; | |
e9f207f0 JB |
196 | key->debugfs.dir = debugfs_create_dir(buf, |
197 | local->debugfs.keys); | |
198 | ||
199 | if (!key->debugfs.dir) | |
200 | return; | |
201 | ||
202 | DEBUGFS_ADD(keylen); | |
8f20fc24 | 203 | DEBUGFS_ADD(flags); |
e9f207f0 JB |
204 | DEBUGFS_ADD(keyidx); |
205 | DEBUGFS_ADD(hw_key_idx); | |
206 | DEBUGFS_ADD(tx_rx_count); | |
207 | DEBUGFS_ADD(algorithm); | |
208 | DEBUGFS_ADD(tx_spec); | |
209 | DEBUGFS_ADD(rx_spec); | |
210 | DEBUGFS_ADD(replays); | |
211 | DEBUGFS_ADD(key); | |
212 | }; | |
213 | ||
214 | #define DEBUGFS_DEL(name) \ | |
215 | debugfs_remove(key->debugfs.name); key->debugfs.name = NULL; | |
216 | ||
217 | void ieee80211_debugfs_key_remove(struct ieee80211_key *key) | |
218 | { | |
219 | if (!key) | |
220 | return; | |
221 | ||
222 | DEBUGFS_DEL(keylen); | |
8f20fc24 | 223 | DEBUGFS_DEL(flags); |
e9f207f0 JB |
224 | DEBUGFS_DEL(keyidx); |
225 | DEBUGFS_DEL(hw_key_idx); | |
226 | DEBUGFS_DEL(tx_rx_count); | |
227 | DEBUGFS_DEL(algorithm); | |
228 | DEBUGFS_DEL(tx_spec); | |
229 | DEBUGFS_DEL(rx_spec); | |
230 | DEBUGFS_DEL(replays); | |
231 | DEBUGFS_DEL(key); | |
232 | ||
233 | debugfs_remove(key->debugfs.stalink); | |
234 | key->debugfs.stalink = NULL; | |
235 | debugfs_remove(key->debugfs.dir); | |
236 | key->debugfs.dir = NULL; | |
237 | } | |
238 | void ieee80211_debugfs_key_add_default(struct ieee80211_sub_if_data *sdata) | |
239 | { | |
240 | char buf[50]; | |
241 | ||
242 | if (!sdata->debugfsdir) | |
243 | return; | |
244 | ||
8f20fc24 | 245 | sprintf(buf, "../keys/%d", sdata->default_key->conf.keyidx); |
e9f207f0 JB |
246 | sdata->debugfs.default_key = |
247 | debugfs_create_symlink("default_key", sdata->debugfsdir, buf); | |
248 | } | |
249 | void ieee80211_debugfs_key_remove_default(struct ieee80211_sub_if_data *sdata) | |
250 | { | |
251 | if (!sdata) | |
252 | return; | |
253 | ||
254 | debugfs_remove(sdata->debugfs.default_key); | |
255 | sdata->debugfs.default_key = NULL; | |
256 | } | |
257 | void ieee80211_debugfs_key_sta_link(struct ieee80211_key *key, | |
258 | struct sta_info *sta) | |
259 | { | |
260 | char buf[50]; | |
261 | ||
262 | if (!key->debugfs.dir) | |
263 | return; | |
264 | ||
50339a67 | 265 | sprintf(buf, "../../stations/" MAC_FMT, MAC_ARG(sta->addr)); |
e9f207f0 JB |
266 | key->debugfs.stalink = |
267 | debugfs_create_symlink("station", key->debugfs.dir, buf); | |
268 | } | |
269 | ||
270 | void ieee80211_debugfs_key_sta_del(struct ieee80211_key *key, | |
271 | struct sta_info *sta) | |
272 | { | |
273 | debugfs_remove(key->debugfs.stalink); | |
274 | key->debugfs.stalink = NULL; | |
275 | } |