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/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/version.h>
50 #include <linux/wireless.h>
51 #include <linux/etherdevice.h>
52 #include <asm/uaccess.h>
54 #include "ieee80211.h"
56 MODULE_DESCRIPTION("802.11 data/management/control stack");
57 MODULE_AUTHOR("Copyright (C) 2004 Intel Corporation <jketreno@linux.intel.com>");
58 MODULE_LICENSE("GPL");
60 #define DRV_NAME "ieee80211"
62 static inline int ieee80211_networks_allocate(struct ieee80211_device *ieee)
67 ieee->networks = kmalloc(
68 MAX_NETWORK_COUNT * sizeof(struct ieee80211_network),
70 if (!ieee->networks) {
71 printk(KERN_WARNING "%s: Out of memory allocating beacons\n",
76 memset(ieee->networks, 0,
77 MAX_NETWORK_COUNT * sizeof(struct ieee80211_network));
82 static inline void ieee80211_networks_free(struct ieee80211_device *ieee)
86 kfree(ieee->networks);
87 ieee->networks = NULL;
90 static inline void ieee80211_networks_initialize(struct ieee80211_device *ieee)
94 INIT_LIST_HEAD(&ieee->network_free_list);
95 INIT_LIST_HEAD(&ieee->network_list);
96 for (i = 0; i < MAX_NETWORK_COUNT; i++)
97 list_add_tail(&ieee->networks[i].list, &ieee->network_free_list);
100 struct ieee80211_device *ieee80211_alloc(struct net_device *dev,
103 struct ieee80211_device *ieee = kmalloc(
104 sizeof(struct ieee80211_device), GFP_KERNEL);
108 memset(ieee, 0, sizeof(*ieee));
112 err = ieee80211_networks_allocate(ieee);
114 IEEE80211_ERROR("Unable to allocate beacon storage\n");
117 ieee80211_networks_initialize(ieee);
119 /* Default fragmentation threshold is maximum payload size */
120 ieee->fts = DEFAULT_FTS;
121 ieee->scan_age = DEFAULT_MAX_SCAN_AGE;
124 #ifdef CONFIG_IEEE80211_CRYPT
125 /* Default to enabling full open WEP with host based encrypt/decrypt */
126 ieee->host_encrypt = 1;
127 ieee->host_decrypt = 1;
129 INIT_LIST_HEAD(&ieee->crypt_deinit_list);
130 init_timer(&ieee->crypt_deinit_timer);
131 ieee->crypt_deinit_timer.data = (unsigned long)ieee;
132 ieee->crypt_deinit_timer.function = ieee80211_crypt_deinit_handler;
135 spin_lock_init(&ieee->lock);
145 void ieee80211_free(struct ieee80211_device *ieee)
147 #ifdef CONFIG_IEEE80211_CRYPT
150 del_timer_sync(&ieee->crypt_deinit_timer);
151 ieee80211_crypt_deinit_entries(ieee, 1);
153 for (i = 0; i < WEP_KEYS; i++) {
154 struct ieee80211_crypt_data *crypt = ieee->crypt[i];
157 crypt->ops->deinit(crypt->priv);
158 module_put(crypt->ops->owner);
161 ieee->crypt[i] = NULL;
165 ieee80211_networks_free(ieee);
169 #ifdef CONFIG_IEEE80211_DEBUG
171 static int debug = 0;
172 u32 ieee80211_debug_level = 0;
173 struct proc_dir_entry *ieee80211_proc = NULL;
175 static int show_debug_level(char *page, char **start, off_t offset,
176 int count, int *eof, void *data)
178 return snprintf(page, count, "0x%08X\n", ieee80211_debug_level);
181 static int store_debug_level(struct file *file, const char *buffer,
182 unsigned long count, void *data)
184 char buf[] = "0x00000000";
185 unsigned long len = min(sizeof(buf) - 1, (u32)count);
186 char *p = (char *)buf;
189 if (copy_from_user(buf, buffer, len))
192 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
194 if (p[0] == 'x' || p[0] == 'X')
196 val = simple_strtoul(p, &p, 16);
198 val = simple_strtoul(p, &p, 10);
200 printk(KERN_INFO DRV_NAME
201 ": %s is not in hex or decimal form.\n", buf);
203 ieee80211_debug_level = val;
205 return strnlen(buf, count);
208 static int __init ieee80211_init(void)
210 struct proc_dir_entry *e;
212 ieee80211_debug_level = debug;
213 ieee80211_proc = create_proc_entry(DRV_NAME, S_IFDIR, proc_net);
214 if (ieee80211_proc == NULL) {
215 IEEE80211_ERROR("Unable to create " DRV_NAME
216 " proc directory\n");
219 e = create_proc_entry("debug_level", S_IFREG | S_IRUGO | S_IWUSR,
222 remove_proc_entry(DRV_NAME, proc_net);
223 ieee80211_proc = NULL;
226 e->read_proc = show_debug_level;
227 e->write_proc = store_debug_level;
233 static void __exit ieee80211_exit(void)
235 if (ieee80211_proc) {
236 remove_proc_entry("debug_level", ieee80211_proc);
237 remove_proc_entry(DRV_NAME, proc_net);
238 ieee80211_proc = NULL;
242 #include <linux/moduleparam.h>
243 module_param(debug, int, 0444);
244 MODULE_PARM_DESC(debug, "debug output mask");
247 module_exit(ieee80211_exit);
248 module_init(ieee80211_init);
251 EXPORT_SYMBOL(ieee80211_alloc);
252 EXPORT_SYMBOL(ieee80211_free);