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33#include <linux/compiler.h>
34#include <linux/errno.h>
35#include <linux/if_arp.h>
36#include <linux/in6.h>
37#include <linux/in.h>
38#include <linux/ip.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>
51#include <net/arp.h>
52
53#include "libipw.h"
54
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>"
60
61MODULE_VERSION(DRV_VERSION);
62MODULE_DESCRIPTION(DRV_DESCRIPTION);
63MODULE_AUTHOR(DRV_COPYRIGHT);
64MODULE_LICENSE("GPL");
65
66static struct cfg80211_ops libipw_config_ops = { };
67static void *libipw_wiphy_privid = &libipw_wiphy_privid;
68
69static int libipw_networks_allocate(struct libipw_device *ieee)
70{
71 int i, j;
72
73 for (i = 0; i < MAX_NETWORK_COUNT; i++) {
74 ieee->networks[i] = kzalloc(sizeof(struct libipw_network),
75 GFP_KERNEL);
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]);
80 return -ENOMEM;
81 }
82 }
83
84 return 0;
85}
86
87static inline void libipw_networks_free(struct libipw_device *ieee)
88{
89 int i;
90
91 for (i = 0; i < MAX_NETWORK_COUNT; i++)
92 kfree(ieee->networks[i]);
93}
94
95void libipw_networks_age(struct libipw_device *ieee,
96 unsigned long age_secs)
97{
98 struct libipw_network *network = NULL;
99 unsigned long flags;
100 unsigned long age_jiffies = msecs_to_jiffies(age_secs * MSEC_PER_SEC);
101
102 spin_lock_irqsave(&ieee->lock, flags);
103 list_for_each_entry(network, &ieee->network_list, list) {
104 network->last_scanned -= age_jiffies;
105 }
106 spin_unlock_irqrestore(&ieee->lock, flags);
107}
108EXPORT_SYMBOL(libipw_networks_age);
109
110static void libipw_networks_initialize(struct libipw_device *ieee)
111{
112 int i;
113
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);
119}
120
121int libipw_change_mtu(struct net_device *dev, int new_mtu)
122{
123 if ((new_mtu < 68) || (new_mtu > LIBIPW_DATA_LEN))
124 return -EINVAL;
125 dev->mtu = new_mtu;
126 return 0;
127}
128EXPORT_SYMBOL(libipw_change_mtu);
129
130struct net_device *alloc_libipw(int sizeof_priv, int monitor)
131{
132 struct libipw_device *ieee;
133 struct net_device *dev;
134 int err;
135
136 LIBIPW_DEBUG_INFO("Initializing...\n");
137
138 dev = alloc_etherdev(sizeof(struct libipw_device) + sizeof_priv);
139 if (!dev)
140 goto failed;
141
142 ieee = netdev_priv(dev);
143
144 ieee->dev = dev;
145
146 if (!monitor) {
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;
151 }
152
153 ieee->dev->ieee80211_ptr = &ieee->wdev;
154 ieee->wdev.iftype = NL80211_IFTYPE_STATION;
155
156
157
158
159 ieee->wdev.wiphy->privid = libipw_wiphy_privid;
160
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);
165 }
166
167 err = libipw_networks_allocate(ieee);
168 if (err) {
169 LIBIPW_ERROR("Unable to allocate beacon storage: %d\n", err);
170 goto failed_free_wiphy;
171 }
172 libipw_networks_initialize(ieee);
173
174
175 ieee->fts = DEFAULT_FTS;
176 ieee->rts = DEFAULT_FTS;
177 ieee->scan_age = DEFAULT_MAX_SCAN_AGE;
178 ieee->open_wep = 1;
179
180
181 ieee->host_encrypt = 1;
182 ieee->host_decrypt = 1;
183 ieee->host_mc_decrypt = 1;
184
185
186
187
188
189
190 ieee->host_open_frag = 1;
191 ieee->ieee802_1x = 1;
192
193 spin_lock_init(&ieee->lock);
194
195 lib80211_crypt_info_init(&ieee->crypt_info, dev->name, &ieee->lock);
196
197 ieee->wpa_enabled = 0;
198 ieee->drop_unencrypted = 0;
199 ieee->privacy_invoked = 0;
200
201 return dev;
202
203failed_free_wiphy:
204 if (!monitor)
205 wiphy_free(ieee->wdev.wiphy);
206failed_free_netdev:
207 free_netdev(dev);
208failed:
209 return NULL;
210}
211EXPORT_SYMBOL(alloc_libipw);
212
213void free_libipw(struct net_device *dev, int monitor)
214{
215 struct libipw_device *ieee = netdev_priv(dev);
216
217 lib80211_crypt_info_free(&ieee->crypt_info);
218
219 libipw_networks_free(ieee);
220
221
222 if (!monitor)
223 wiphy_free(ieee->wdev.wiphy);
224
225 free_netdev(dev);
226}
227EXPORT_SYMBOL(free_libipw);
228
229#ifdef CONFIG_LIBIPW_DEBUG
230
231static int debug = 0;
232u32 libipw_debug_level = 0;
233EXPORT_SYMBOL_GPL(libipw_debug_level);
234static struct proc_dir_entry *libipw_proc = NULL;
235
236static int debug_level_proc_show(struct seq_file *m, void *v)
237{
238 seq_printf(m, "0x%08X\n", libipw_debug_level);
239 return 0;
240}
241
242static int debug_level_proc_open(struct inode *inode, struct file *file)
243{
244 return single_open(file, debug_level_proc_show, NULL);
245}
246
247static ssize_t debug_level_proc_write(struct file *file,
248 const char __user *buffer, size_t count, loff_t *pos)
249{
250 char buf[] = "0x00000000\n";
251 size_t len = min(sizeof(buf) - 1, count);
252 unsigned long val;
253
254 if (copy_from_user(buf, buffer, len))
255 return count;
256 buf[len] = 0;
257 if (sscanf(buf, "%li", &val) != 1)
258 printk(KERN_INFO DRV_NAME
259 ": %s is not in hex or decimal form.\n", buf);
260 else
261 libipw_debug_level = val;
262
263 return strnlen(buf, len);
264}
265
266static const struct file_operations debug_level_proc_fops = {
267 .owner = THIS_MODULE,
268 .open = debug_level_proc_open,
269 .read = seq_read,
270 .llseek = seq_lseek,
271 .release = single_release,
272 .write = debug_level_proc_write,
273};
274#endif
275
276static int __init libipw_init(void)
277{
278#ifdef CONFIG_LIBIPW_DEBUG
279 struct proc_dir_entry *e;
280
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");
286 return -EIO;
287 }
288 e = proc_create("debug_level", S_IRUGO | S_IWUSR, libipw_proc,
289 &debug_level_proc_fops);
290 if (!e) {
291 remove_proc_entry(DRV_PROCNAME, init_net.proc_net);
292 libipw_proc = NULL;
293 return -EIO;
294 }
295#endif
296
297 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
298 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
299
300 return 0;
301}
302
303static void __exit libipw_exit(void)
304{
305#ifdef CONFIG_LIBIPW_DEBUG
306 if (libipw_proc) {
307 remove_proc_entry("debug_level", libipw_proc);
308 remove_proc_entry(DRV_PROCNAME, init_net.proc_net);
309 libipw_proc = NULL;
310 }
311#endif
312}
313
314#ifdef CONFIG_LIBIPW_DEBUG
315#include <linux/moduleparam.h>
316module_param(debug, int, 0444);
317MODULE_PARM_DESC(debug, "debug output mask");
318#endif
319
320module_exit(libipw_exit);
321module_init(libipw_init);
322
