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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// 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);