1 /*******************************************************************************
3 Copyright(c) 2004 Intel Corporation. All rights reserved.
5 Portions of this file are based on the WEP enablement code provided by the
6 Host AP project hostap-drivers v0.1.3
7 Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
9 Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
11 This program is free software; you can redistribute it and/or modify it
12 under the terms of version 2 of the GNU General Public License as
13 published by the Free Software Foundation.
15 This program is distributed in the hope that it will be useful, but WITHOUT
16 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
17 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
20 You should have received a copy of the GNU General Public License along with
21 this program; if not, write to the Free Software Foundation, Inc., 59
22 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
24 The full GNU General Public License is included in this distribution in the
28 James P. Ketrenos <ipw2100-admin@linux.intel.com>
29 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
31 *******************************************************************************/
33 #include <linux/compiler.h>
34 #include <linux/config.h>
35 #include <linux/errno.h>
36 #include <linux/if_arp.h>
37 #include <linux/in6.h>
40 #include <linux/kernel.h>
41 #include <linux/module.h>
42 #include <linux/netdevice.h>
43 #include <linux/proc_fs.h>
44 #include <linux/skbuff.h>
45 #include <linux/slab.h>
46 #include <linux/tcp.h>
47 #include <linux/types.h>
48 #include <linux/version.h>
49 #include <linux/wireless.h>
50 #include <linux/etherdevice.h>
51 #include <asm/uaccess.h>
54 #include <net/ieee80211.h>
56 MODULE_DESCRIPTION("802.11 data/management/control stack");
58 ("Copyright (C) 2004 Intel Corporation <jketreno@linux.intel.com>");
59 MODULE_LICENSE("GPL");
61 #define DRV_NAME "ieee80211"
63 static inline int ieee80211_networks_allocate(struct ieee80211_device *ieee)
69 kmalloc(MAX_NETWORK_COUNT * sizeof(struct ieee80211_network),
71 if (!ieee->networks) {
72 printk(KERN_WARNING "%s: Out of memory allocating beacons\n",
77 memset(ieee->networks, 0,
78 MAX_NETWORK_COUNT * sizeof(struct ieee80211_network));
83 static inline void ieee80211_networks_free(struct ieee80211_device *ieee)
87 kfree(ieee->networks);
88 ieee->networks = NULL;
91 static inline void ieee80211_networks_initialize(struct ieee80211_device *ieee)
95 INIT_LIST_HEAD(&ieee->network_free_list);
96 INIT_LIST_HEAD(&ieee->network_list);
97 for (i = 0; i < MAX_NETWORK_COUNT; i++)
98 list_add_tail(&ieee->networks[i].list,
99 &ieee->network_free_list);
102 struct net_device *alloc_ieee80211(int sizeof_priv)
104 struct ieee80211_device *ieee;
105 struct net_device *dev;
108 IEEE80211_DEBUG_INFO("Initializing...\n");
110 dev = alloc_etherdev(sizeof(struct ieee80211_device) + sizeof_priv);
112 IEEE80211_ERROR("Unable to network device.\n");
115 ieee = netdev_priv(dev);
116 dev->hard_start_xmit = ieee80211_xmit;
120 err = ieee80211_networks_allocate(ieee);
122 IEEE80211_ERROR("Unable to allocate beacon storage: %d\n", err);
125 ieee80211_networks_initialize(ieee);
127 /* Default fragmentation threshold is maximum payload size */
128 ieee->fts = DEFAULT_FTS;
129 ieee->scan_age = DEFAULT_MAX_SCAN_AGE;
132 /* Default to enabling full open WEP with host based encrypt/decrypt */
133 ieee->host_encrypt = 1;
134 ieee->host_decrypt = 1;
135 ieee->ieee802_1x = 1; /* Default to supporting 802.1x */
137 INIT_LIST_HEAD(&ieee->crypt_deinit_list);
138 init_timer(&ieee->crypt_deinit_timer);
139 ieee->crypt_deinit_timer.data = (unsigned long)ieee;
140 ieee->crypt_deinit_timer.function = ieee80211_crypt_deinit_handler;
142 spin_lock_init(&ieee->lock);
144 ieee->wpa_enabled = 0;
145 ieee->tkip_countermeasures = 0;
146 ieee->drop_unencrypted = 0;
147 ieee->privacy_invoked = 0;
148 ieee->ieee802_1x = 1;
158 void free_ieee80211(struct net_device *dev)
160 struct ieee80211_device *ieee = netdev_priv(dev);
164 del_timer_sync(&ieee->crypt_deinit_timer);
165 ieee80211_crypt_deinit_entries(ieee, 1);
167 for (i = 0; i < WEP_KEYS; i++) {
168 struct ieee80211_crypt_data *crypt = ieee->crypt[i];
171 crypt->ops->deinit(crypt->priv);
172 module_put(crypt->ops->owner);
175 ieee->crypt[i] = NULL;
179 ieee80211_networks_free(ieee);
183 #ifdef CONFIG_IEEE80211_DEBUG
185 static int debug = 0;
186 u32 ieee80211_debug_level = 0;
187 struct proc_dir_entry *ieee80211_proc = NULL;
189 static int show_debug_level(char *page, char **start, off_t offset,
190 int count, int *eof, void *data)
192 return snprintf(page, count, "0x%08X\n", ieee80211_debug_level);
195 static int store_debug_level(struct file *file, const char __user * buffer,
196 unsigned long count, void *data)
198 char buf[] = "0x00000000\n";
199 unsigned long len = min((unsigned long)sizeof(buf) - 1, count);
202 if (copy_from_user(buf, buffer, len))
205 if (sscanf(buf, "%li", &val) != 1)
206 printk(KERN_INFO DRV_NAME
207 ": %s is not in hex or decimal form.\n", buf);
209 ieee80211_debug_level = val;
211 return strnlen(buf, len);
214 static int __init ieee80211_init(void)
216 struct proc_dir_entry *e;
218 ieee80211_debug_level = debug;
219 ieee80211_proc = create_proc_entry(DRV_NAME, S_IFDIR, proc_net);
220 if (ieee80211_proc == NULL) {
221 IEEE80211_ERROR("Unable to create " DRV_NAME
222 " proc directory\n");
225 e = create_proc_entry("debug_level", S_IFREG | S_IRUGO | S_IWUSR,
228 remove_proc_entry(DRV_NAME, proc_net);
229 ieee80211_proc = NULL;
232 e->read_proc = show_debug_level;
233 e->write_proc = store_debug_level;
239 static void __exit ieee80211_exit(void)
241 if (ieee80211_proc) {
242 remove_proc_entry("debug_level", ieee80211_proc);
243 remove_proc_entry(DRV_NAME, proc_net);
244 ieee80211_proc = NULL;
248 #include <linux/moduleparam.h>
249 module_param(debug, int, 0444);
250 MODULE_PARM_DESC(debug, "debug output mask");
252 module_exit(ieee80211_exit);
253 module_init(ieee80211_init);
256 const char *escape_essid(const char *essid, u8 essid_len)
258 static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
259 const char *s = essid;
262 if (ieee80211_is_empty_essid(essid, essid_len)) {
263 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
267 essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
268 while (essid_len--) {
281 EXPORT_SYMBOL(alloc_ieee80211);
282 EXPORT_SYMBOL(free_ieee80211);
283 EXPORT_SYMBOL(escape_essid);