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 "ieee80211"
57 #define DRV_VERSION LIBIPW_VERSION
58 #define DRV_COPYRIGHT "Copyright (C) 2004-2005 Intel Corporation <jketreno@linux.intel.com>"
60 MODULE_VERSION(DRV_VERSION);
61 MODULE_DESCRIPTION(DRV_DESCRIPTION);
62 MODULE_AUTHOR(DRV_COPYRIGHT);
63 MODULE_LICENSE("GPL");
65 struct cfg80211_ops libipw_config_ops = { };
66 void *libipw_wiphy_privid = &libipw_wiphy_privid;
68 static int libipw_networks_allocate(struct libipw_device *ieee)
74 kzalloc(MAX_NETWORK_COUNT * sizeof(struct libipw_network),
76 if (!ieee->networks) {
77 printk(KERN_WARNING "%s: Out of memory allocating beacons\n",
85 void libipw_network_reset(struct libipw_network *network)
90 if (network->ibss_dfs) {
91 kfree(network->ibss_dfs);
92 network->ibss_dfs = NULL;
96 static inline void libipw_networks_free(struct libipw_device *ieee)
103 for (i = 0; i < MAX_NETWORK_COUNT; i++)
104 if (ieee->networks[i].ibss_dfs)
105 kfree(ieee->networks[i].ibss_dfs);
107 kfree(ieee->networks);
108 ieee->networks = NULL;
111 void libipw_networks_age(struct libipw_device *ieee,
112 unsigned long age_secs)
114 struct libipw_network *network = NULL;
116 unsigned long age_jiffies = msecs_to_jiffies(age_secs * MSEC_PER_SEC);
118 spin_lock_irqsave(&ieee->lock, flags);
119 list_for_each_entry(network, &ieee->network_list, list) {
120 network->last_scanned -= age_jiffies;
122 spin_unlock_irqrestore(&ieee->lock, flags);
124 EXPORT_SYMBOL(libipw_networks_age);
126 static void libipw_networks_initialize(struct libipw_device *ieee)
130 INIT_LIST_HEAD(&ieee->network_free_list);
131 INIT_LIST_HEAD(&ieee->network_list);
132 for (i = 0; i < MAX_NETWORK_COUNT; i++)
133 list_add_tail(&ieee->networks[i].list,
134 &ieee->network_free_list);
137 int libipw_change_mtu(struct net_device *dev, int new_mtu)
139 if ((new_mtu < 68) || (new_mtu > LIBIPW_DATA_LEN))
144 EXPORT_SYMBOL(libipw_change_mtu);
146 struct net_device *alloc_ieee80211(int sizeof_priv, int monitor)
148 struct libipw_device *ieee;
149 struct net_device *dev;
152 LIBIPW_DEBUG_INFO("Initializing...\n");
154 dev = alloc_etherdev(sizeof(struct libipw_device) + sizeof_priv);
156 LIBIPW_ERROR("Unable to allocate network device.\n");
159 ieee = netdev_priv(dev);
160 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,29))
161 dev->hard_start_xmit = libipw_xmit;
162 dev->change_mtu = libipw_change_mtu;
168 ieee->wdev.wiphy = wiphy_new(&libipw_config_ops, 0);
169 if (!ieee->wdev.wiphy) {
170 LIBIPW_ERROR("Unable to allocate wiphy.\n");
171 goto failed_free_netdev;
174 ieee->dev->ieee80211_ptr = &ieee->wdev;
175 ieee->wdev.iftype = NL80211_IFTYPE_STATION;
177 /* Fill-out wiphy structure bits we know... Not enough info
178 here to call set_wiphy_dev or set MAC address or channel info
179 -- have to do that in ->ndo_init... */
180 ieee->wdev.wiphy->privid = libipw_wiphy_privid;
182 ieee->wdev.wiphy->max_scan_ssids = 1;
183 ieee->wdev.wiphy->max_scan_ie_len = 0;
184 ieee->wdev.wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
185 | BIT(NL80211_IFTYPE_ADHOC);
188 err = libipw_networks_allocate(ieee);
190 LIBIPW_ERROR("Unable to allocate beacon storage: %d\n", err);
191 goto failed_free_wiphy;
193 libipw_networks_initialize(ieee);
195 /* Default fragmentation threshold is maximum payload size */
196 ieee->fts = DEFAULT_FTS;
197 ieee->rts = DEFAULT_FTS;
198 ieee->scan_age = DEFAULT_MAX_SCAN_AGE;
201 /* Default to enabling full open WEP with host based encrypt/decrypt */
202 ieee->host_encrypt = 1;
203 ieee->host_decrypt = 1;
204 ieee->host_mc_decrypt = 1;
206 /* Host fragmentation in Open mode. Default is enabled.
207 * Note: host fragmentation is always enabled if host encryption
208 * is enabled. For cards can do hardware encryption, they must do
209 * hardware fragmentation as well. So we don't need a variable
210 * like host_enc_frag. */
211 ieee->host_open_frag = 1;
212 ieee->ieee802_1x = 1; /* Default to supporting 802.1x */
214 spin_lock_init(&ieee->lock);
216 lib80211_crypt_info_init(&ieee->crypt_info, dev->name, &ieee->lock);
218 ieee->wpa_enabled = 0;
219 ieee->drop_unencrypted = 0;
220 ieee->privacy_invoked = 0;
226 wiphy_free(ieee->wdev.wiphy);
233 void free_ieee80211(struct net_device *dev, int monitor)
235 struct libipw_device *ieee = netdev_priv(dev);
237 lib80211_crypt_info_free(&ieee->crypt_info);
239 libipw_networks_free(ieee);
241 /* free cfg80211 resources */
243 wiphy_free(ieee->wdev.wiphy);
248 #ifdef CONFIG_LIBIPW_DEBUG
250 static int debug = 0;
251 u32 libipw_debug_level = 0;
252 EXPORT_SYMBOL_GPL(libipw_debug_level);
253 static struct proc_dir_entry *libipw_proc = NULL;
255 static int debug_level_proc_show(struct seq_file *m, void *v)
257 seq_printf(m, "0x%08X\n", libipw_debug_level);
261 static int debug_level_proc_open(struct inode *inode, struct file *file)
263 return single_open(file, debug_level_proc_show, NULL);
266 static ssize_t debug_level_proc_write(struct file *file,
267 const char __user *buffer, size_t count, loff_t *pos)
269 char buf[] = "0x00000000\n";
270 size_t len = min(sizeof(buf) - 1, count);
273 if (copy_from_user(buf, buffer, len))
276 if (sscanf(buf, "%li", &val) != 1)
277 printk(KERN_INFO DRV_NAME
278 ": %s is not in hex or decimal form.\n", buf);
280 libipw_debug_level = val;
282 return strnlen(buf, len);
285 static const struct file_operations debug_level_proc_fops = {
286 .owner = THIS_MODULE,
287 .open = debug_level_proc_open,
290 .release = single_release,
291 .write = debug_level_proc_write,
293 #endif /* CONFIG_LIBIPW_DEBUG */
295 static int __init libipw_init(void)
297 #ifdef CONFIG_LIBIPW_DEBUG
298 struct proc_dir_entry *e;
300 libipw_debug_level = debug;
301 libipw_proc = proc_mkdir(DRV_NAME, init_net.proc_net);
302 if (libipw_proc == NULL) {
303 LIBIPW_ERROR("Unable to create " DRV_NAME
304 " proc directory\n");
307 e = proc_create("debug_level", S_IRUGO | S_IWUSR, libipw_proc,
308 &debug_level_proc_fops);
310 remove_proc_entry(DRV_NAME, init_net.proc_net);
314 #endif /* CONFIG_LIBIPW_DEBUG */
316 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
317 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
322 static void __exit libipw_exit(void)
324 #ifdef CONFIG_LIBIPW_DEBUG
326 remove_proc_entry("debug_level", libipw_proc);
327 remove_proc_entry(DRV_NAME, init_net.proc_net);
330 #endif /* CONFIG_LIBIPW_DEBUG */
333 #ifdef CONFIG_LIBIPW_DEBUG
334 #include <linux/moduleparam.h>
335 module_param(debug, int, 0444);
336 MODULE_PARM_DESC(debug, "debug output mask");
337 #endif /* CONFIG_LIBIPW_DEBUG */
339 module_exit(libipw_exit);
340 module_init(libipw_init);
342 EXPORT_SYMBOL(alloc_ieee80211);
343 EXPORT_SYMBOL(free_ieee80211);