1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33#include <linux/compiler.h>
34
35#include <linux/errno.h>
36#include <linux/if_arp.h>
37#include <linux/in6.h>
38#include <linux/in.h>
39#include <linux/ip.h>
40#include <linux/kernel.h>
41#include <linux/module.h>
42#include <linux/netdevice.h>
43#include <linux/pci.h>
44#include <linux/proc_fs.h>
45#include <linux/skbuff.h>
46#include <linux/slab.h>
47#include <linux/tcp.h>
48#include <linux/types.h>
49#include <linux/wireless.h>
50#include <linux/etherdevice.h>
51#include <asm/uaccess.h>
52#include <net/arp.h>
53
54#include "ieee80211.h"
55
56MODULE_DESCRIPTION("802.11 data/management/control stack");
57MODULE_AUTHOR("Copyright (C) 2004 Intel Corporation <jketreno@linux.intel.com>");
58MODULE_LICENSE("GPL");
59
60#define DRV_NAME "ieee80211"
61
62static inline int ieee80211_networks_allocate(struct ieee80211_device *ieee)
63{
64 if (ieee->networks)
65 return 0;
66
67 ieee->networks = kcalloc(
68 MAX_NETWORK_COUNT, sizeof(struct ieee80211_network),
69 GFP_KERNEL);
70 if (!ieee->networks) {
71 printk(KERN_WARNING "%s: Out of memory allocating beacons\n",
72 ieee->dev->name);
73 return -ENOMEM;
74 }
75
76 return 0;
77}
78
79static inline void ieee80211_networks_free(struct ieee80211_device *ieee)
80{
81 if (!ieee->networks)
82 return;
83 kfree(ieee->networks);
84 ieee->networks = NULL;
85}
86
87static inline void ieee80211_networks_initialize(struct ieee80211_device *ieee)
88{
89 int i;
90
91 INIT_LIST_HEAD(&ieee->network_free_list);
92 INIT_LIST_HEAD(&ieee->network_list);
93 for (i = 0; i < MAX_NETWORK_COUNT; i++)
94 list_add_tail(&ieee->networks[i].list, &ieee->network_free_list);
95}
96
97
98struct net_device *alloc_ieee80211(int sizeof_priv)
99{
100 struct ieee80211_device *ieee;
101 struct net_device *dev;
102 int i,err;
103
104 IEEE80211_DEBUG_INFO("Initializing...\n");
105
106 dev = alloc_etherdev(sizeof(struct ieee80211_device) + sizeof_priv);
107 if (!dev) {
108 IEEE80211_ERROR("Unable to network device.\n");
109 goto failed;
110 }
111
112 ieee = netdev_priv(dev);
113 memset(ieee, 0, sizeof(struct ieee80211_device)+sizeof_priv);
114 ieee->dev = dev;
115
116 err = ieee80211_networks_allocate(ieee);
117 if (err) {
118 IEEE80211_ERROR("Unable to allocate beacon storage: %d\n",
119 err);
120 goto failed;
121 }
122 ieee80211_networks_initialize(ieee);
123
124
125
126 ieee->fts = DEFAULT_FTS;
127 ieee->scan_age = DEFAULT_MAX_SCAN_AGE;
128 ieee->open_wep = 1;
129
130
131 ieee->host_encrypt = 1;
132 ieee->host_decrypt = 1;
133 ieee->ieee802_1x = 1;
134
135 INIT_LIST_HEAD(&ieee->crypt_deinit_list);
136 init_timer(&ieee->crypt_deinit_timer);
137 ieee->crypt_deinit_timer.data = (unsigned long)ieee;
138 ieee->crypt_deinit_timer.function = ieee80211_crypt_deinit_handler;
139
140 spin_lock_init(&ieee->lock);
141 spin_lock_init(&ieee->wpax_suitlist_lock);
142 spin_lock_init(&ieee->bw_spinlock);
143 spin_lock_init(&ieee->reorder_spinlock);
144
145 atomic_set(&(ieee->atm_chnlop), 0);
146 atomic_set(&(ieee->atm_swbw), 0);
147
148 ieee->wpax_type_set = 0;
149 ieee->wpa_enabled = 0;
150 ieee->tkip_countermeasures = 0;
151 ieee->drop_unencrypted = 0;
152 ieee->privacy_invoked = 0;
153 ieee->ieee802_1x = 1;
154 ieee->raw_tx = 0;
155
156 ieee->hwsec_active = 0;
157
158 ieee80211_softmac_init(ieee);
159
160 ieee->pHTInfo = kzalloc(sizeof(RT_HIGH_THROUGHPUT), GFP_KERNEL);
161 if (ieee->pHTInfo == NULL)
162 {
163 IEEE80211_DEBUG(IEEE80211_DL_ERR, "can't alloc memory for HTInfo\n");
164 goto failed;
165 }
166 HTUpdateDefaultSetting(ieee);
167 HTInitializeHTInfo(ieee);
168 TSInitialize(ieee);
169
170 for (i = 0; i < IEEE_IBSS_MAC_HASH_SIZE; i++)
171 INIT_LIST_HEAD(&ieee->ibss_mac_hash[i]);
172
173 for (i = 0; i < 17; i++) {
174 ieee->last_rxseq_num[i] = -1;
175 ieee->last_rxfrag_num[i] = -1;
176 ieee->last_packet_time[i] = 0;
177 }
178
179
180 ieee80211_tkip_null();
181 ieee80211_wep_null();
182 ieee80211_ccmp_null();
183
184 return dev;
185
186 failed:
187 if (dev)
188 free_netdev(dev);
189
190 return NULL;
191}
192
193
194void free_ieee80211(struct net_device *dev)
195{
196 struct ieee80211_device *ieee = netdev_priv(dev);
197 int i;
198
199
200 kfree(ieee->pHTInfo);
201 ieee->pHTInfo = NULL;
202 RemoveAllTS(ieee);
203 ieee80211_softmac_free(ieee);
204 del_timer_sync(&ieee->crypt_deinit_timer);
205 ieee80211_crypt_deinit_entries(ieee, 1);
206
207 for (i = 0; i < WEP_KEYS; i++) {
208 struct ieee80211_crypt_data *crypt = ieee->crypt[i];
209 if (crypt) {
210 if (crypt->ops)
211 crypt->ops->deinit(crypt->priv);
212 kfree(crypt);
213 ieee->crypt[i] = NULL;
214 }
215 }
216
217 ieee80211_networks_free(ieee);
218 free_netdev(dev);
219}
220
221#ifdef CONFIG_IEEE80211_DEBUG
222
223u32 ieee80211_debug_level;
224static int debug = \
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242 IEEE80211_DL_ERR
243 ;
244static struct proc_dir_entry *ieee80211_proc;
245
246static int show_debug_level(struct seq_file *m, void *v)
247{
248 return seq_printf(m, "0x%08X\n", ieee80211_debug_level);
249}
250
251static ssize_t write_debug_level(struct file *file, const char __user *buffer,
252 size_t count, loff_t *ppos)
253{
254 unsigned long val;
255 int err = kstrtoul_from_user(buffer, count, 0, &val);
256 if (err)
257 return err;
258 ieee80211_debug_level = val;
259 return count;
260}
261
262static int open_debug_level(struct inode *inode, struct file *file)
263{
264 return single_open(file, show_debug_level, NULL);
265}
266
267static const struct file_operations fops = {
268 .open = open_debug_level,
269 .read = seq_read,
270 .llseek = seq_lseek,
271 .write = write_debug_level,
272 .release = single_release,
273};
274
275int __init ieee80211_debug_init(void)
276{
277 struct proc_dir_entry *e;
278
279 ieee80211_debug_level = debug;
280
281 ieee80211_proc = proc_mkdir(DRV_NAME, init_net.proc_net);
282 if (ieee80211_proc == NULL) {
283 IEEE80211_ERROR("Unable to create " DRV_NAME
284 " proc directory\n");
285 return -EIO;
286 }
287 e = proc_create("debug_level", S_IRUGO | S_IWUSR,
288 ieee80211_proc, &fops);
289 if (!e) {
290 remove_proc_entry(DRV_NAME, init_net.proc_net);
291 ieee80211_proc = NULL;
292 return -EIO;
293 }
294 return 0;
295}
296
297void __exit ieee80211_debug_exit(void)
298{
299 if (ieee80211_proc) {
300 remove_proc_entry("debug_level", ieee80211_proc);
301 remove_proc_entry(DRV_NAME, init_net.proc_net);
302 ieee80211_proc = NULL;
303 }
304}
305
306#include <linux/moduleparam.h>
307module_param(debug, int, 0444);
308MODULE_PARM_DESC(debug, "debug output mask");
309#endif
310
