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 <net/net_namespace.h>
56 #include "ieee80211.h"
58 MODULE_DESCRIPTION("802.11 data/management/control stack");
59 MODULE_AUTHOR("Copyright (C) 2004 Intel Corporation <jketreno@linux.intel.com>");
60 MODULE_LICENSE("GPL");
62 #define DRV_NAME "ieee80211"
64 static inline int ieee80211_networks_allocate(struct ieee80211_device *ieee)
69 ieee->networks = kmalloc(
70 MAX_NETWORK_COUNT * sizeof(struct ieee80211_network),
72 if (!ieee->networks) {
73 printk(KERN_WARNING "%s: Out of memory allocating beacons\n",
78 memset(ieee->networks, 0,
79 MAX_NETWORK_COUNT * sizeof(struct ieee80211_network));
84 static inline void ieee80211_networks_free(struct ieee80211_device *ieee)
88 kfree(ieee->networks);
89 ieee->networks = NULL;
92 static inline void ieee80211_networks_initialize(struct ieee80211_device *ieee)
96 INIT_LIST_HEAD(&ieee->network_free_list);
97 INIT_LIST_HEAD(&ieee->network_list);
98 for (i = 0; i < MAX_NETWORK_COUNT; i++)
99 list_add_tail(&ieee->networks[i].list, &ieee->network_free_list);
103 struct net_device *alloc_ieee80211(int sizeof_priv)
105 struct ieee80211_device *ieee;
106 struct net_device *dev;
109 IEEE80211_DEBUG_INFO("Initializing...\n");
111 dev = alloc_etherdev(sizeof(struct ieee80211_device) + sizeof_priv);
113 IEEE80211_ERROR("Unable to network device.\n");
116 ieee = netdev_priv(dev);
120 err = ieee80211_networks_allocate(ieee);
122 IEEE80211_ERROR("Unable to allocate beacon storage: %d\n",
126 ieee80211_networks_initialize(ieee);
128 /* Default fragmentation threshold is maximum payload size */
129 ieee->fts = DEFAULT_FTS;
130 ieee->scan_age = DEFAULT_MAX_SCAN_AGE;
133 /* Default to enabling full open WEP with host based encrypt/decrypt */
134 ieee->host_encrypt = 1;
135 ieee->host_decrypt = 1;
136 ieee->ieee802_1x = 1; /* Default to supporting 802.1x */
138 INIT_LIST_HEAD(&ieee->crypt_deinit_list);
139 init_timer(&ieee->crypt_deinit_timer);
140 ieee->crypt_deinit_timer.data = (unsigned long)ieee;
141 ieee->crypt_deinit_timer.function = ieee80211_crypt_deinit_handler;
143 spin_lock_init(&ieee->lock);
144 spin_lock_init(&ieee->wpax_suitlist_lock);
146 ieee->wpax_type_set = 0;
147 ieee->wpa_enabled = 0;
148 ieee->tkip_countermeasures = 0;
149 ieee->drop_unencrypted = 0;
150 ieee->privacy_invoked = 0;
151 ieee->ieee802_1x = 1;
154 ieee80211_softmac_init(ieee);
156 for (i = 0; i < IEEE_IBSS_MAC_HASH_SIZE; i++)
157 INIT_LIST_HEAD(&ieee->ibss_mac_hash[i]);
159 for (i = 0; i < 17; i++) {
160 ieee->last_rxseq_num[i] = -1;
161 ieee->last_rxfrag_num[i] = -1;
162 ieee->last_packet_time[i] = 0;
164 //These function were added to load crypte module autoly
165 ieee80211_tkip_null();
166 ieee80211_wep_null();
167 ieee80211_ccmp_null();
177 void free_ieee80211(struct net_device *dev)
179 struct ieee80211_device *ieee = netdev_priv(dev);
182 struct list_head *p, *q;
185 ieee80211_softmac_free(ieee);
186 del_timer_sync(&ieee->crypt_deinit_timer);
187 ieee80211_crypt_deinit_entries(ieee, 1);
189 for (i = 0; i < WEP_KEYS; i++) {
190 struct ieee80211_crypt_data *crypt = ieee->crypt[i];
193 crypt->ops->deinit(crypt->priv);
194 module_put(crypt->ops->owner);
197 ieee->crypt[i] = NULL;
201 ieee80211_networks_free(ieee);
203 for (i = 0; i < IEEE_IBSS_MAC_HASH_SIZE; i++) {
204 list_for_each_safe(p, q, &ieee->ibss_mac_hash[i]) {
205 kfree(list_entry(p, struct ieee_ibss_seq, list));
214 //#ifdef CONFIG_IEEE80211_DEBUG
217 static int debug = 0;
218 u32 ieee80211_debug_level = 0;
219 struct proc_dir_entry *ieee80211_proc = NULL;
221 static int show_debug_level(char *page, char **start, off_t offset,
222 int count, int *eof, void *data)
224 return snprintf(page, count, "0x%08X\n", ieee80211_debug_level);
227 static int store_debug_level(struct file *file, const char *buffer,
228 unsigned long count, void *data)
230 char buf[] = "0x00000000";
231 unsigned long len = min(sizeof(buf) - 1, (u32)count);
232 char *p = (char *)buf;
235 if (copy_from_user(buf, buffer, len))
238 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
240 if (p[0] == 'x' || p[0] == 'X')
242 val = simple_strtoul(p, &p, 16);
244 val = simple_strtoul(p, &p, 10);
246 printk(KERN_INFO DRV_NAME
247 ": %s is not in hex or decimal form.\n", buf);
249 ieee80211_debug_level = val;
251 return strnlen(buf, count);
254 static int __init ieee80211_init(void)
256 struct proc_dir_entry *e;
258 ieee80211_debug_level = debug;
259 ieee80211_proc = create_proc_entry(DRV_NAME, S_IFDIR, proc_net);
260 if (ieee80211_proc == NULL) {
261 IEEE80211_ERROR("Unable to create " DRV_NAME
262 " proc directory\n");
265 e = create_proc_entry("debug_level", S_IFREG | S_IRUGO | S_IWUSR,
268 remove_proc_entry(DRV_NAME, proc_net);
269 ieee80211_proc = NULL;
272 e->read_proc = show_debug_level;
273 e->write_proc = store_debug_level;
279 static void __exit ieee80211_exit(void)
281 if (ieee80211_proc) {
282 remove_proc_entry("debug_level", ieee80211_proc);
283 remove_proc_entry(DRV_NAME, proc_net);
284 ieee80211_proc = NULL;
288 #include <linux/moduleparam.h>
289 module_param(debug, int, 0444);
290 MODULE_PARM_DESC(debug, "debug output mask");
293 module_exit(ieee80211_exit);
294 module_init(ieee80211_init);
298 EXPORT_SYMBOL(alloc_ieee80211);
299 EXPORT_SYMBOL(free_ieee80211);