1 /*******************************************************************************
2 *
3 * Copyright(c) 2004 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 * <jkmaline@cc.hut.fi>
9 * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.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 * James P. Ketrenos <ipw2100-admin@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/config.h> */
35 #include <linux/errno.h>
36 #include <linux/if_arp.h>
37 #include <linux/in6.h>
38 #include <linux/in.h>
39 #include <linux/ip.h>
40 #include <linux/kernel.h>
41 #include <linux/module.h>
42 #include <linux/netdevice.h>
43 #include <linux/pci.h>
44 #include <linux/proc_fs.h>
45 #include <linux/skbuff.h>
46 #include <linux/slab.h>
47 #include <linux/tcp.h>
48 #include <linux/types.h>
49 #include <linux/wireless.h>
50 #include <linux/etherdevice.h>
51 #include <linux/uaccess.h>
52 #include <net/arp.h>
53
54 #include "ieee80211.h"
55
56 MODULE_DESCRIPTION("802.11 data/management/control stack");
57 MODULE_AUTHOR("Copyright (C) 2004 Intel Corporation <jketreno@linux.intel.com>");
58 MODULE_LICENSE("GPL");
59
60 #define DRV_NAME "ieee80211"
61
ieee80211_networks_allocate(struct ieee80211_device * ieee)62 static inline int ieee80211_networks_allocate(struct ieee80211_device *ieee)
63 {
64 if (ieee->networks)
65 return 0;
66
67 ieee->networks = kcalloc(
68 MAX_NETWORK_COUNT, sizeof(struct ieee80211_network),
69 GFP_KERNEL);
70 if (!ieee->networks) {
71 printk(KERN_WARNING "%s: Out of memory allocating beacons\n",
72 ieee->dev->name);
73 return -ENOMEM;
74 }
75
76 return 0;
77 }
78
ieee80211_networks_free(struct ieee80211_device * ieee)79 static inline void ieee80211_networks_free(struct ieee80211_device *ieee)
80 {
81 if (!ieee->networks)
82 return;
83 kfree(ieee->networks);
84 ieee->networks = NULL;
85 }
86
ieee80211_networks_initialize(struct ieee80211_device * ieee)87 static inline void ieee80211_networks_initialize(struct ieee80211_device *ieee)
88 {
89 int i;
90
91 INIT_LIST_HEAD(&ieee->network_free_list);
92 INIT_LIST_HEAD(&ieee->network_list);
93 for (i = 0; i < MAX_NETWORK_COUNT; i++)
94 list_add_tail(&ieee->networks[i].list, &ieee->network_free_list);
95 }
96
97
alloc_ieee80211(int sizeof_priv)98 struct net_device *alloc_ieee80211(int sizeof_priv)
99 {
100 struct ieee80211_device *ieee;
101 struct net_device *dev;
102 int i, err;
103
104 IEEE80211_DEBUG_INFO("Initializing...\n");
105
106 dev = alloc_etherdev(sizeof(struct ieee80211_device) + sizeof_priv);
107 if (!dev) {
108 IEEE80211_ERROR("Unable to network device.\n");
109 goto failed;
110 }
111
112 ieee = netdev_priv(dev);
113 memset(ieee, 0, sizeof(struct ieee80211_device)+sizeof_priv);
114 ieee->dev = dev;
115
116 err = ieee80211_networks_allocate(ieee);
117 if (err) {
118 IEEE80211_ERROR("Unable to allocate beacon storage: %d\n",
119 err);
120 goto failed;
121 }
122 ieee80211_networks_initialize(ieee);
123
124
125 /* Default fragmentation threshold is maximum payload size */
126 ieee->fts = DEFAULT_FTS;
127 ieee->scan_age = DEFAULT_MAX_SCAN_AGE;
128 ieee->open_wep = 1;
129
130 /* Default to enabling full open WEP with host based encrypt/decrypt */
131 ieee->host_encrypt = 1;
132 ieee->host_decrypt = 1;
133 ieee->ieee802_1x = 1; /* Default to supporting 802.1x */
134
135 INIT_LIST_HEAD(&ieee->crypt_deinit_list);
136 timer_setup(&ieee->crypt_deinit_timer, ieee80211_crypt_deinit_handler,
137 0);
138
139 spin_lock_init(&ieee->lock);
140 spin_lock_init(&ieee->wpax_suitlist_lock);
141 spin_lock_init(&ieee->bw_spinlock);
142 spin_lock_init(&ieee->reorder_spinlock);
143 /* added by WB */
144 atomic_set(&ieee->atm_chnlop, 0);
145 atomic_set(&ieee->atm_swbw, 0);
146
147 ieee->wpax_type_set = 0;
148 ieee->wpa_enabled = 0;
149 ieee->tkip_countermeasures = 0;
150 ieee->drop_unencrypted = 0;
151 ieee->privacy_invoked = 0;
152 ieee->ieee802_1x = 1;
153 ieee->raw_tx = 0;
154 //ieee->hwsec_support = 1; //defalt support hw security. //use module_param instead.
155 ieee->hwsec_active = 0; /* disable hwsec, switch it on when necessary. */
156
157 ieee80211_softmac_init(ieee);
158
159 ieee->pHTInfo = kzalloc(sizeof(RT_HIGH_THROUGHPUT), GFP_KERNEL);
160 if (ieee->pHTInfo == NULL) {
161 IEEE80211_DEBUG(IEEE80211_DL_ERR, "can't alloc memory for HTInfo\n");
162 goto failed;
163 }
164 HTUpdateDefaultSetting(ieee);
165 HTInitializeHTInfo(ieee); /* may move to other place. */
166 TSInitialize(ieee);
167
168 for (i = 0; i < IEEE_IBSS_MAC_HASH_SIZE; i++)
169 INIT_LIST_HEAD(&ieee->ibss_mac_hash[i]);
170
171 for (i = 0; i < 17; i++) {
172 ieee->last_rxseq_num[i] = -1;
173 ieee->last_rxfrag_num[i] = -1;
174 ieee->last_packet_time[i] = 0;
175 }
176
177 /* These function were added to load crypte module autoly */
178 ieee80211_tkip_null();
179
180 return dev;
181
182 failed:
183 if (dev)
184 free_netdev(dev);
185
186 return NULL;
187 }
188
189
free_ieee80211(struct net_device * dev)190 void free_ieee80211(struct net_device *dev)
191 {
192 struct ieee80211_device *ieee = netdev_priv(dev);
193 int i;
194 /* struct list_head *p, *q; */
195 // del_timer_sync(&ieee->SwBwTimer);
196 kfree(ieee->pHTInfo);
197 ieee->pHTInfo = NULL;
198 RemoveAllTS(ieee);
199 ieee80211_softmac_free(ieee);
200 del_timer_sync(&ieee->crypt_deinit_timer);
201 ieee80211_crypt_deinit_entries(ieee, 1);
202
203 for (i = 0; i < WEP_KEYS; i++) {
204 struct ieee80211_crypt_data *crypt = ieee->crypt[i];
205 if (crypt) {
206 if (crypt->ops)
207 crypt->ops->deinit(crypt->priv);
208 kfree(crypt);
209 ieee->crypt[i] = NULL;
210 }
211 }
212
213 ieee80211_networks_free(ieee);
214 free_netdev(dev);
215 }
216
217 #ifdef CONFIG_IEEE80211_DEBUG
218
219 u32 ieee80211_debug_level;
220 static int debug = \
221 // IEEE80211_DL_INFO |
222 // IEEE80211_DL_WX |
223 // IEEE80211_DL_SCAN |
224 // IEEE80211_DL_STATE |
225 // IEEE80211_DL_MGMT |
226 // IEEE80211_DL_FRAG |
227 // IEEE80211_DL_EAP |
228 // IEEE80211_DL_DROP |
229 // IEEE80211_DL_TX |
230 // IEEE80211_DL_RX |
231 //IEEE80211_DL_QOS |
232 // IEEE80211_DL_HT |
233 // IEEE80211_DL_TS |
234 // IEEE80211_DL_BA |
235 // IEEE80211_DL_REORDER|
236 // IEEE80211_DL_TRACE |
237 //IEEE80211_DL_DATA |
238 IEEE80211_DL_ERR /* awayls open this flags to show error out */
239 ;
240 static struct proc_dir_entry *ieee80211_proc;
241
show_debug_level(struct seq_file * m,void * v)242 static int show_debug_level(struct seq_file *m, void *v)
243 {
244 seq_printf(m, "0x%08X\n", ieee80211_debug_level);
245
246 return 0;
247 }
248
write_debug_level(struct file * file,const char __user * buffer,size_t count,loff_t * ppos)249 static ssize_t write_debug_level(struct file *file, const char __user *buffer,
250 size_t count, loff_t *ppos)
251 {
252 unsigned long val;
253 int err = kstrtoul_from_user(buffer, count, 0, &val);
254 if (err)
255 return err;
256 ieee80211_debug_level = val;
257 return count;
258 }
259
open_debug_level(struct inode * inode,struct file * file)260 static int open_debug_level(struct inode *inode, struct file *file)
261 {
262 return single_open(file, show_debug_level, NULL);
263 }
264
265 static const struct file_operations fops = {
266 .open = open_debug_level,
267 .read = seq_read,
268 .llseek = seq_lseek,
269 .write = write_debug_level,
270 .release = single_release,
271 };
272
ieee80211_debug_init(void)273 int __init ieee80211_debug_init(void)
274 {
275 struct proc_dir_entry *e;
276
277 ieee80211_debug_level = debug;
278
279 ieee80211_proc = proc_mkdir(DRV_NAME, init_net.proc_net);
280 if (ieee80211_proc == NULL) {
281 IEEE80211_ERROR("Unable to create " DRV_NAME
282 " proc directory\n");
283 return -EIO;
284 }
285 e = proc_create("debug_level", 0644, ieee80211_proc, &fops);
286 if (!e) {
287 remove_proc_entry(DRV_NAME, init_net.proc_net);
288 ieee80211_proc = NULL;
289 return -EIO;
290 }
291 return 0;
292 }
293
ieee80211_debug_exit(void)294 void __exit ieee80211_debug_exit(void)
295 {
296 if (ieee80211_proc) {
297 remove_proc_entry("debug_level", ieee80211_proc);
298 remove_proc_entry(DRV_NAME, init_net.proc_net);
299 ieee80211_proc = NULL;
300 }
301 }
302
303 module_param(debug, int, 0444);
304 MODULE_PARM_DESC(debug, "debug output mask");
305 #endif
306
