1 /*******************************************************************************
3 Copyright(c) 2004-2005 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 <j@w1.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 Intel Linux Wireless <ilw@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/errno.h>
35 #include <linux/if_arp.h>
36 #include <linux/in6.h>
39 #include <linux/kernel.h>
40 #include <linux/module.h>
41 #include <linux/netdevice.h>
42 #include <linux/proc_fs.h>
43 #include <linux/skbuff.h>
44 #include <linux/slab.h>
45 #include <linux/tcp.h>
46 #include <linux/types.h>
47 #include <linux/wireless.h>
48 #include <linux/etherdevice.h>
49 #include <asm/uaccess.h>
50 #include <net/net_namespace.h>
55 #define DRV_DESCRIPTION "802.11 data/management/control stack"
56 #define DRV_NAME "libipw"
57 #define DRV_PROCNAME "ieee80211"
58 #define DRV_VERSION LIBIPW_VERSION
59 #define DRV_COPYRIGHT "Copyright (C) 2004-2005 Intel Corporation <jketreno@linux.intel.com>"
61 MODULE_VERSION(DRV_VERSION);
62 MODULE_DESCRIPTION(DRV_DESCRIPTION);
63 MODULE_AUTHOR(DRV_COPYRIGHT);
64 MODULE_LICENSE("GPL");
66 static struct cfg80211_ops libipw_config_ops = { };
67 static void *libipw_wiphy_privid = &libipw_wiphy_privid;
69 static int libipw_networks_allocate(struct libipw_device *ieee)
73 for (i = 0; i < MAX_NETWORK_COUNT; i++) {
74 ieee->networks[i] = kzalloc(sizeof(struct libipw_network),
76 if (!ieee->networks[i]) {
77 LIBIPW_ERROR("Out of memory allocating beacons\n");
78 for (j = 0; j < i; j++)
79 kfree(ieee->networks[j]);
87 static inline void libipw_networks_free(struct libipw_device *ieee)
91 for (i = 0; i < MAX_NETWORK_COUNT; i++)
92 kfree(ieee->networks[i]);
95 void libipw_networks_age(struct libipw_device *ieee,
96 unsigned long age_secs)
98 struct libipw_network *network = NULL;
100 unsigned long age_jiffies = msecs_to_jiffies(age_secs * MSEC_PER_SEC);
102 spin_lock_irqsave(&ieee->lock, flags);
103 list_for_each_entry(network, &ieee->network_list, list) {
104 network->last_scanned -= age_jiffies;
106 spin_unlock_irqrestore(&ieee->lock, flags);
108 EXPORT_SYMBOL(libipw_networks_age);
110 static void libipw_networks_initialize(struct libipw_device *ieee)
114 INIT_LIST_HEAD(&ieee->network_free_list);
115 INIT_LIST_HEAD(&ieee->network_list);
116 for (i = 0; i < MAX_NETWORK_COUNT; i++)
117 list_add_tail(&ieee->networks[i]->list,
118 &ieee->network_free_list);
121 int libipw_change_mtu(struct net_device *dev, int new_mtu)
123 if ((new_mtu < 68) || (new_mtu > LIBIPW_DATA_LEN))
128 EXPORT_SYMBOL(libipw_change_mtu);
130 struct net_device *alloc_libipw(int sizeof_priv, int monitor)
132 struct libipw_device *ieee;
133 struct net_device *dev;
136 LIBIPW_DEBUG_INFO("Initializing...\n");
138 dev = alloc_etherdev(sizeof(struct libipw_device) + sizeof_priv);
142 ieee = netdev_priv(dev);
147 ieee->wdev.wiphy = wiphy_new(&libipw_config_ops, 0);
148 if (!ieee->wdev.wiphy) {
149 LIBIPW_ERROR("Unable to allocate wiphy.\n");
150 goto failed_free_netdev;
153 ieee->dev->ieee80211_ptr = &ieee->wdev;
154 ieee->wdev.iftype = NL80211_IFTYPE_STATION;
156 /* Fill-out wiphy structure bits we know... Not enough info
157 here to call set_wiphy_dev or set MAC address or channel info
158 -- have to do that in ->ndo_init... */
159 ieee->wdev.wiphy->privid = libipw_wiphy_privid;
161 ieee->wdev.wiphy->max_scan_ssids = 1;
162 ieee->wdev.wiphy->max_scan_ie_len = 0;
163 ieee->wdev.wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
164 | BIT(NL80211_IFTYPE_ADHOC);
167 err = libipw_networks_allocate(ieee);
169 LIBIPW_ERROR("Unable to allocate beacon storage: %d\n", err);
170 goto failed_free_wiphy;
172 libipw_networks_initialize(ieee);
174 /* Default fragmentation threshold is maximum payload size */
175 ieee->fts = DEFAULT_FTS;
176 ieee->rts = DEFAULT_FTS;
177 ieee->scan_age = DEFAULT_MAX_SCAN_AGE;
180 /* Default to enabling full open WEP with host based encrypt/decrypt */
181 ieee->host_encrypt = 1;
182 ieee->host_decrypt = 1;
183 ieee->host_mc_decrypt = 1;
185 /* Host fragmentation in Open mode. Default is enabled.
186 * Note: host fragmentation is always enabled if host encryption
187 * is enabled. For cards can do hardware encryption, they must do
188 * hardware fragmentation as well. So we don't need a variable
189 * like host_enc_frag. */
190 ieee->host_open_frag = 1;
191 ieee->ieee802_1x = 1; /* Default to supporting 802.1x */
193 spin_lock_init(&ieee->lock);
195 lib80211_crypt_info_init(&ieee->crypt_info, dev->name, &ieee->lock);
197 ieee->wpa_enabled = 0;
198 ieee->drop_unencrypted = 0;
199 ieee->privacy_invoked = 0;
205 wiphy_free(ieee->wdev.wiphy);
211 EXPORT_SYMBOL(alloc_libipw);
213 void free_libipw(struct net_device *dev, int monitor)
215 struct libipw_device *ieee = netdev_priv(dev);
217 lib80211_crypt_info_free(&ieee->crypt_info);
219 libipw_networks_free(ieee);
221 /* free cfg80211 resources */
223 wiphy_free(ieee->wdev.wiphy);
227 EXPORT_SYMBOL(free_libipw);
229 #ifdef CONFIG_LIBIPW_DEBUG
231 static int debug = 0;
232 u32 libipw_debug_level = 0;
233 EXPORT_SYMBOL_GPL(libipw_debug_level);
234 static struct proc_dir_entry *libipw_proc = NULL;
236 static int debug_level_proc_show(struct seq_file *m, void *v)
238 seq_printf(m, "0x%08X\n", libipw_debug_level);
242 static int debug_level_proc_open(struct inode *inode, struct file *file)
244 return single_open(file, debug_level_proc_show, NULL);
247 static ssize_t debug_level_proc_write(struct file *file,
248 const char __user *buffer, size_t count, loff_t *pos)
250 char buf[] = "0x00000000\n";
251 size_t len = min(sizeof(buf) - 1, count);
254 if (copy_from_user(buf, buffer, len))
257 if (sscanf(buf, "%li", &val) != 1)
258 printk(KERN_INFO DRV_NAME
259 ": %s is not in hex or decimal form.\n", buf);
261 libipw_debug_level = val;
263 return strnlen(buf, len);
266 static const struct file_operations debug_level_proc_fops = {
267 .owner = THIS_MODULE,
268 .open = debug_level_proc_open,
271 .release = single_release,
272 .write = debug_level_proc_write,
274 #endif /* CONFIG_LIBIPW_DEBUG */
276 static int __init libipw_init(void)
278 #ifdef CONFIG_LIBIPW_DEBUG
279 struct proc_dir_entry *e;
281 libipw_debug_level = debug;
282 libipw_proc = proc_mkdir(DRV_PROCNAME, init_net.proc_net);
283 if (libipw_proc == NULL) {
284 LIBIPW_ERROR("Unable to create " DRV_PROCNAME
285 " proc directory\n");
288 e = proc_create("debug_level", S_IRUGO | S_IWUSR, libipw_proc,
289 &debug_level_proc_fops);
291 remove_proc_entry(DRV_PROCNAME, init_net.proc_net);
295 #endif /* CONFIG_LIBIPW_DEBUG */
297 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
298 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
303 static void __exit libipw_exit(void)
305 #ifdef CONFIG_LIBIPW_DEBUG
307 remove_proc_entry("debug_level", libipw_proc);
308 remove_proc_entry(DRV_PROCNAME, init_net.proc_net);
311 #endif /* CONFIG_LIBIPW_DEBUG */
314 #ifdef CONFIG_LIBIPW_DEBUG
315 #include <linux/moduleparam.h>
316 module_param(debug, int, 0444);
317 MODULE_PARM_DESC(debug, "debug output mask");
318 #endif /* CONFIG_LIBIPW_DEBUG */
320 module_exit(libipw_exit);
321 module_init(libipw_init);