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1// SPDX-License-Identifier: GPL-2.0-only
2/*******************************************************************************
3
4 Copyright(c) 2004-2005 Intel Corporation. All rights reserved.
5
6 Portions of this file are based on the WEP enablement code provided by the
7 Host AP project hostap-drivers v0.1.3
8 Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
9 <j@w1.fi>
10 Copyright (c) 2002-2003, Jouni Malinen <j@w1.fi>
11
12
13 Contact Information:
14 Intel Linux Wireless <ilw@linux.intel.com>
15 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
16
17*******************************************************************************/
18
19#include <linux/compiler.h>
20#include <linux/errno.h>
21#include <linux/if_arp.h>
22#include <linux/in6.h>
23#include <linux/in.h>
24#include <linux/ip.h>
25#include <linux/kernel.h>
26#include <linux/module.h>
27#include <linux/netdevice.h>
28#include <linux/proc_fs.h>
29#include <linux/skbuff.h>
30#include <linux/slab.h>
31#include <linux/tcp.h>
32#include <linux/types.h>
33#include <linux/wireless.h>
34#include <linux/etherdevice.h>
35#include <linux/uaccess.h>
36#include <net/net_namespace.h>
37#include <net/arp.h>
38
39#include "libipw.h"
40
41#define DRV_DESCRIPTION "802.11 data/management/control stack"
42#define DRV_NAME "libipw"
43#define DRV_PROCNAME "ieee80211"
44#define DRV_VERSION LIBIPW_VERSION
45#define DRV_COPYRIGHT "Copyright (C) 2004-2005 Intel Corporation <jketreno@linux.intel.com>"
46
47MODULE_VERSION(DRV_VERSION);
48MODULE_DESCRIPTION(DRV_DESCRIPTION);
49MODULE_AUTHOR(DRV_COPYRIGHT);
50MODULE_LICENSE("GPL");
51
52static struct cfg80211_ops libipw_config_ops = { };
53static void *libipw_wiphy_privid = &libipw_wiphy_privid;
54
55static int libipw_networks_allocate(struct libipw_device *ieee)
56{
57 int i, j;
58
59 for (i = 0; i < MAX_NETWORK_COUNT; i++) {
60 ieee->networks[i] = kzalloc(sizeof(struct libipw_network),
61 GFP_KERNEL);
62 if (!ieee->networks[i]) {
63 LIBIPW_ERROR("Out of memory allocating beacons\n");
64 for (j = 0; j < i; j++)
65 kfree(ieee->networks[j]);
66 return -ENOMEM;
67 }
68 }
69
70 return 0;
71}
72
73static inline void libipw_networks_free(struct libipw_device *ieee)
74{
75 int i;
76
77 for (i = 0; i < MAX_NETWORK_COUNT; i++)
78 kfree(ieee->networks[i]);
79}
80
81void libipw_networks_age(struct libipw_device *ieee,
82 unsigned long age_secs)
83{
84 struct libipw_network *network = NULL;
85 unsigned long flags;
86 unsigned long age_jiffies = msecs_to_jiffies(age_secs * MSEC_PER_SEC);
87
88 spin_lock_irqsave(&ieee->lock, flags);
89 list_for_each_entry(network, &ieee->network_list, list) {
90 network->last_scanned -= age_jiffies;
91 }
92 spin_unlock_irqrestore(&ieee->lock, flags);
93}
94EXPORT_SYMBOL(libipw_networks_age);
95
96static void libipw_networks_initialize(struct libipw_device *ieee)
97{
98 int i;
99
100 INIT_LIST_HEAD(&ieee->network_free_list);
101 INIT_LIST_HEAD(&ieee->network_list);
102 for (i = 0; i < MAX_NETWORK_COUNT; i++)
103 list_add_tail(&ieee->networks[i]->list,
104 &ieee->network_free_list);
105}
106
107struct net_device *alloc_libipw(int sizeof_priv, int monitor)
108{
109 struct libipw_device *ieee;
110 struct net_device *dev;
111 int err;
112
113 LIBIPW_DEBUG_INFO("Initializing...\n");
114
115 dev = alloc_etherdev(sizeof(struct libipw_device) + sizeof_priv);
116 if (!dev)
117 goto failed;
118
119 ieee = netdev_priv(dev);
120
121 ieee->dev = dev;
122
123 if (!monitor) {
124 ieee->wdev.wiphy = wiphy_new(&libipw_config_ops, 0);
125 if (!ieee->wdev.wiphy) {
126 LIBIPW_ERROR("Unable to allocate wiphy.\n");
127 goto failed_free_netdev;
128 }
129
130 ieee->dev->ieee80211_ptr = &ieee->wdev;
131 ieee->wdev.iftype = NL80211_IFTYPE_STATION;
132
133 /* Fill-out wiphy structure bits we know... Not enough info
134 here to call set_wiphy_dev or set MAC address or channel info
135 -- have to do that in ->ndo_init... */
136 ieee->wdev.wiphy->privid = libipw_wiphy_privid;
137
138 ieee->wdev.wiphy->max_scan_ssids = 1;
139 ieee->wdev.wiphy->max_scan_ie_len = 0;
140 ieee->wdev.wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
141 | BIT(NL80211_IFTYPE_ADHOC);
142 }
143
144 err = libipw_networks_allocate(ieee);
145 if (err) {
146 LIBIPW_ERROR("Unable to allocate beacon storage: %d\n", err);
147 goto failed_free_wiphy;
148 }
149 libipw_networks_initialize(ieee);
150
151 /* Default fragmentation threshold is maximum payload size */
152 ieee->fts = DEFAULT_FTS;
153 ieee->rts = DEFAULT_FTS;
154 ieee->scan_age = DEFAULT_MAX_SCAN_AGE;
155 ieee->open_wep = 1;
156
157 /* Default to enabling full open WEP with host based encrypt/decrypt */
158 ieee->host_encrypt = 1;
159 ieee->host_decrypt = 1;
160 ieee->host_mc_decrypt = 1;
161
162 /* Host fragmentation in Open mode. Default is enabled.
163 * Note: host fragmentation is always enabled if host encryption
164 * is enabled. For cards can do hardware encryption, they must do
165 * hardware fragmentation as well. So we don't need a variable
166 * like host_enc_frag. */
167 ieee->host_open_frag = 1;
168 ieee->ieee802_1x = 1; /* Default to supporting 802.1x */
169
170 spin_lock_init(&ieee->lock);
171
172 lib80211_crypt_info_init(&ieee->crypt_info, dev->name, &ieee->lock);
173
174 ieee->wpa_enabled = 0;
175 ieee->drop_unencrypted = 0;
176 ieee->privacy_invoked = 0;
177
178 return dev;
179
180failed_free_wiphy:
181 if (!monitor)
182 wiphy_free(ieee->wdev.wiphy);
183failed_free_netdev:
184 free_netdev(dev);
185failed:
186 return NULL;
187}
188EXPORT_SYMBOL(alloc_libipw);
189
190void free_libipw(struct net_device *dev, int monitor)
191{
192 struct libipw_device *ieee = netdev_priv(dev);
193
194 lib80211_crypt_info_free(&ieee->crypt_info);
195
196 libipw_networks_free(ieee);
197
198 /* free cfg80211 resources */
199 if (!monitor)
200 wiphy_free(ieee->wdev.wiphy);
201
202 free_netdev(dev);
203}
204EXPORT_SYMBOL(free_libipw);
205
206#ifdef CONFIG_LIBIPW_DEBUG
207
208static int debug = 0;
209u32 libipw_debug_level = 0;
210EXPORT_SYMBOL_GPL(libipw_debug_level);
211static struct proc_dir_entry *libipw_proc = NULL;
212
213static int debug_level_proc_show(struct seq_file *m, void *v)
214{
215 seq_printf(m, "0x%08X\n", libipw_debug_level);
216 return 0;
217}
218
219static int debug_level_proc_open(struct inode *inode, struct file *file)
220{
221 return single_open(file, debug_level_proc_show, NULL);
222}
223
224static ssize_t debug_level_proc_write(struct file *file,
225 const char __user *buffer, size_t count, loff_t *pos)
226{
227 char buf[] = "0x00000000\n";
228 size_t len = min(sizeof(buf) - 1, count);
229 unsigned long val;
230
231 if (copy_from_user(buf, buffer, len))
232 return count;
233 buf[len] = 0;
234 if (sscanf(buf, "%li", &val) != 1)
235 printk(KERN_INFO DRV_NAME
236 ": %s is not in hex or decimal form.\n", buf);
237 else
238 libipw_debug_level = val;
239
240 return strnlen(buf, len);
241}
242
243static const struct proc_ops debug_level_proc_ops = {
244 .proc_open = debug_level_proc_open,
245 .proc_read = seq_read,
246 .proc_lseek = seq_lseek,
247 .proc_release = single_release,
248 .proc_write = debug_level_proc_write,
249};
250#endif /* CONFIG_LIBIPW_DEBUG */
251
252static int __init libipw_init(void)
253{
254#ifdef CONFIG_LIBIPW_DEBUG
255 struct proc_dir_entry *e;
256
257 libipw_debug_level = debug;
258 libipw_proc = proc_mkdir(DRV_PROCNAME, init_net.proc_net);
259 if (libipw_proc == NULL) {
260 LIBIPW_ERROR("Unable to create " DRV_PROCNAME
261 " proc directory\n");
262 return -EIO;
263 }
264 e = proc_create("debug_level", 0644, libipw_proc,
265 &debug_level_proc_ops);
266 if (!e) {
267 remove_proc_entry(DRV_PROCNAME, init_net.proc_net);
268 libipw_proc = NULL;
269 return -EIO;
270 }
271#endif /* CONFIG_LIBIPW_DEBUG */
272
273 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
274 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
275
276 return 0;
277}
278
279static void __exit libipw_exit(void)
280{
281#ifdef CONFIG_LIBIPW_DEBUG
282 if (libipw_proc) {
283 remove_proc_entry("debug_level", libipw_proc);
284 remove_proc_entry(DRV_PROCNAME, init_net.proc_net);
285 libipw_proc = NULL;
286 }
287#endif /* CONFIG_LIBIPW_DEBUG */
288}
289
290#ifdef CONFIG_LIBIPW_DEBUG
291#include <linux/moduleparam.h>
292module_param(debug, int, 0444);
293MODULE_PARM_DESC(debug, "debug output mask");
294#endif /* CONFIG_LIBIPW_DEBUG */
295
296module_exit(libipw_exit);
297module_init(libipw_init);
1/*******************************************************************************
2
3 Copyright(c) 2004-2005 Intel Corporation. All rights reserved.
4
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
8 <j@w1.fi>
9 Copyright (c) 2002-2003, Jouni Malinen <j@w1.fi>
10
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.
14
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
18 more details.
19
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.
23
24 The full GNU General Public License is included in this distribution in the
25 file called LICENSE.
26
27 Contact Information:
28 Intel Linux Wireless <ilw@linux.intel.com>
29 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
30
31*******************************************************************************/
32
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 <linux/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
121struct net_device *alloc_libipw(int sizeof_priv, int monitor)
122{
123 struct libipw_device *ieee;
124 struct net_device *dev;
125 int err;
126
127 LIBIPW_DEBUG_INFO("Initializing...\n");
128
129 dev = alloc_etherdev(sizeof(struct libipw_device) + sizeof_priv);
130 if (!dev)
131 goto failed;
132
133 ieee = netdev_priv(dev);
134
135 ieee->dev = dev;
136
137 if (!monitor) {
138 ieee->wdev.wiphy = wiphy_new(&libipw_config_ops, 0);
139 if (!ieee->wdev.wiphy) {
140 LIBIPW_ERROR("Unable to allocate wiphy.\n");
141 goto failed_free_netdev;
142 }
143
144 ieee->dev->ieee80211_ptr = &ieee->wdev;
145 ieee->wdev.iftype = NL80211_IFTYPE_STATION;
146
147 /* Fill-out wiphy structure bits we know... Not enough info
148 here to call set_wiphy_dev or set MAC address or channel info
149 -- have to do that in ->ndo_init... */
150 ieee->wdev.wiphy->privid = libipw_wiphy_privid;
151
152 ieee->wdev.wiphy->max_scan_ssids = 1;
153 ieee->wdev.wiphy->max_scan_ie_len = 0;
154 ieee->wdev.wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
155 | BIT(NL80211_IFTYPE_ADHOC);
156 }
157
158 err = libipw_networks_allocate(ieee);
159 if (err) {
160 LIBIPW_ERROR("Unable to allocate beacon storage: %d\n", err);
161 goto failed_free_wiphy;
162 }
163 libipw_networks_initialize(ieee);
164
165 /* Default fragmentation threshold is maximum payload size */
166 ieee->fts = DEFAULT_FTS;
167 ieee->rts = DEFAULT_FTS;
168 ieee->scan_age = DEFAULT_MAX_SCAN_AGE;
169 ieee->open_wep = 1;
170
171 /* Default to enabling full open WEP with host based encrypt/decrypt */
172 ieee->host_encrypt = 1;
173 ieee->host_decrypt = 1;
174 ieee->host_mc_decrypt = 1;
175
176 /* Host fragmentation in Open mode. Default is enabled.
177 * Note: host fragmentation is always enabled if host encryption
178 * is enabled. For cards can do hardware encryption, they must do
179 * hardware fragmentation as well. So we don't need a variable
180 * like host_enc_frag. */
181 ieee->host_open_frag = 1;
182 ieee->ieee802_1x = 1; /* Default to supporting 802.1x */
183
184 spin_lock_init(&ieee->lock);
185
186 lib80211_crypt_info_init(&ieee->crypt_info, dev->name, &ieee->lock);
187
188 ieee->wpa_enabled = 0;
189 ieee->drop_unencrypted = 0;
190 ieee->privacy_invoked = 0;
191
192 return dev;
193
194failed_free_wiphy:
195 if (!monitor)
196 wiphy_free(ieee->wdev.wiphy);
197failed_free_netdev:
198 free_netdev(dev);
199failed:
200 return NULL;
201}
202EXPORT_SYMBOL(alloc_libipw);
203
204void free_libipw(struct net_device *dev, int monitor)
205{
206 struct libipw_device *ieee = netdev_priv(dev);
207
208 lib80211_crypt_info_free(&ieee->crypt_info);
209
210 libipw_networks_free(ieee);
211
212 /* free cfg80211 resources */
213 if (!monitor)
214 wiphy_free(ieee->wdev.wiphy);
215
216 free_netdev(dev);
217}
218EXPORT_SYMBOL(free_libipw);
219
220#ifdef CONFIG_LIBIPW_DEBUG
221
222static int debug = 0;
223u32 libipw_debug_level = 0;
224EXPORT_SYMBOL_GPL(libipw_debug_level);
225static struct proc_dir_entry *libipw_proc = NULL;
226
227static int debug_level_proc_show(struct seq_file *m, void *v)
228{
229 seq_printf(m, "0x%08X\n", libipw_debug_level);
230 return 0;
231}
232
233static int debug_level_proc_open(struct inode *inode, struct file *file)
234{
235 return single_open(file, debug_level_proc_show, NULL);
236}
237
238static ssize_t debug_level_proc_write(struct file *file,
239 const char __user *buffer, size_t count, loff_t *pos)
240{
241 char buf[] = "0x00000000\n";
242 size_t len = min(sizeof(buf) - 1, count);
243 unsigned long val;
244
245 if (copy_from_user(buf, buffer, len))
246 return count;
247 buf[len] = 0;
248 if (sscanf(buf, "%li", &val) != 1)
249 printk(KERN_INFO DRV_NAME
250 ": %s is not in hex or decimal form.\n", buf);
251 else
252 libipw_debug_level = val;
253
254 return strnlen(buf, len);
255}
256
257static const struct file_operations debug_level_proc_fops = {
258 .owner = THIS_MODULE,
259 .open = debug_level_proc_open,
260 .read = seq_read,
261 .llseek = seq_lseek,
262 .release = single_release,
263 .write = debug_level_proc_write,
264};
265#endif /* CONFIG_LIBIPW_DEBUG */
266
267static int __init libipw_init(void)
268{
269#ifdef CONFIG_LIBIPW_DEBUG
270 struct proc_dir_entry *e;
271
272 libipw_debug_level = debug;
273 libipw_proc = proc_mkdir(DRV_PROCNAME, init_net.proc_net);
274 if (libipw_proc == NULL) {
275 LIBIPW_ERROR("Unable to create " DRV_PROCNAME
276 " proc directory\n");
277 return -EIO;
278 }
279 e = proc_create("debug_level", 0644, libipw_proc,
280 &debug_level_proc_fops);
281 if (!e) {
282 remove_proc_entry(DRV_PROCNAME, init_net.proc_net);
283 libipw_proc = NULL;
284 return -EIO;
285 }
286#endif /* CONFIG_LIBIPW_DEBUG */
287
288 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
289 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
290
291 return 0;
292}
293
294static void __exit libipw_exit(void)
295{
296#ifdef CONFIG_LIBIPW_DEBUG
297 if (libipw_proc) {
298 remove_proc_entry("debug_level", libipw_proc);
299 remove_proc_entry(DRV_PROCNAME, init_net.proc_net);
300 libipw_proc = NULL;
301 }
302#endif /* CONFIG_LIBIPW_DEBUG */
303}
304
305#ifdef CONFIG_LIBIPW_DEBUG
306#include <linux/moduleparam.h>
307module_param(debug, int, 0444);
308MODULE_PARM_DESC(debug, "debug output mask");
309#endif /* CONFIG_LIBIPW_DEBUG */
310
311module_exit(libipw_exit);
312module_init(libipw_init);