ieee80211_module.c revision 324148788bf3744d90fb6894ec5744eb0ca91b74 
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/version.h>
50#include <linux/wireless.h>
51#include <linux/etherdevice.h>
52#include <asm/uaccess.h>
53#include <net/arp.h>
54
55#include "ieee80211.h"
56
57MODULE_DESCRIPTION("802.11 data/management/control stack");
58MODULE_AUTHOR("Copyright (C) 2004 Intel Corporation <jketreno@linux.intel.com>");
59MODULE_LICENSE("GPL");
60
61#define DRV_NAME "ieee80211"
62
63static inline int ieee80211_networks_allocate(struct ieee80211_device *ieee)
64{
65	if (ieee->networks)
66		return 0;
67
68	ieee->networks = kmalloc(
69		MAX_NETWORK_COUNT * sizeof(struct ieee80211_network),
70		GFP_KERNEL);
71	if (!ieee->networks) {
72		printk(KERN_WARNING "%s: Out of memory allocating beacons\n",
73		       ieee->dev->name);
74		return -ENOMEM;
75	}
76
77	memset(ieee->networks, 0,
78	       MAX_NETWORK_COUNT * sizeof(struct ieee80211_network));
79
80	return 0;
81}
82
83static inline void ieee80211_networks_free(struct ieee80211_device *ieee)
84{
85	if (!ieee->networks)
86		return;
87	kfree(ieee->networks);
88	ieee->networks = NULL;
89}
90
91static inline void ieee80211_networks_initialize(struct ieee80211_device *ieee)
92{
93	int i;
94
95	INIT_LIST_HEAD(&ieee->network_free_list);
96	INIT_LIST_HEAD(&ieee->network_list);
97	for (i = 0; i < MAX_NETWORK_COUNT; i++)
98		list_add_tail(&ieee->networks[i].list, &ieee->network_free_list);
99}
100
101
102struct net_device *alloc_ieee80211(int sizeof_priv)
103{
104	struct ieee80211_device *ieee;
105	struct net_device *dev;
106	int i,err;
107
108	IEEE80211_DEBUG_INFO("Initializing...\n");
109
110	dev = alloc_etherdev(sizeof(struct ieee80211_device) + sizeof_priv);
111	if (!dev) {
112		IEEE80211_ERROR("Unable to network device.\n");
113		goto failed;
114	}
115
116	ieee = netdev_priv(dev);
117	memset(ieee, 0, sizeof(struct ieee80211_device)+sizeof_priv);
118	ieee->dev = dev;
119
120	err = ieee80211_networks_allocate(ieee);
121	if (err) {
122		IEEE80211_ERROR("Unable to allocate beacon storage: %d\n",
123				err);
124		goto failed;
125	}
126	ieee80211_networks_initialize(ieee);
127
128
129	/* Default fragmentation threshold is maximum payload size */
130	ieee->fts = DEFAULT_FTS;
131	ieee->scan_age = DEFAULT_MAX_SCAN_AGE;
132	ieee->open_wep = 1;
133
134	/* Default to enabling full open WEP with host based encrypt/decrypt */
135	ieee->host_encrypt = 1;
136	ieee->host_decrypt = 1;
137	ieee->ieee802_1x = 1; /* Default to supporting 802.1x */
138
139	INIT_LIST_HEAD(&ieee->crypt_deinit_list);
140	init_timer(&ieee->crypt_deinit_timer);
141	ieee->crypt_deinit_timer.data = (unsigned long)ieee;
142	ieee->crypt_deinit_timer.function = ieee80211_crypt_deinit_handler;
143
144	spin_lock_init(&ieee->lock);
145	spin_lock_init(&ieee->wpax_suitlist_lock);
146	spin_lock_init(&ieee->bw_spinlock);
147	spin_lock_init(&ieee->reorder_spinlock);
148	//added by WB
149	atomic_set(&(ieee->atm_chnlop), 0);
150	atomic_set(&(ieee->atm_swbw), 0);
151
152	ieee->wpax_type_set = 0;
153	ieee->wpa_enabled = 0;
154	ieee->tkip_countermeasures = 0;
155	ieee->drop_unencrypted = 0;
156	ieee->privacy_invoked = 0;
157	ieee->ieee802_1x = 1;
158	ieee->raw_tx = 0;
159	//ieee->hwsec_support = 1; //defalt support hw security. //use module_param instead.
160	ieee->hwsec_active = 0; //disable hwsec, switch it on when necessary.
161
162	ieee80211_softmac_init(ieee);
163
164	ieee->pHTInfo = kzalloc(sizeof(RT_HIGH_THROUGHPUT), GFP_KERNEL);
165	if (ieee->pHTInfo == NULL)
166	{
167		IEEE80211_DEBUG(IEEE80211_DL_ERR, "can't alloc memory for HTInfo\n");
168		return NULL;
169	}
170	HTUpdateDefaultSetting(ieee);
171	HTInitializeHTInfo(ieee); //may move to other place.
172	TSInitialize(ieee);
173
174	for (i = 0; i < IEEE_IBSS_MAC_HASH_SIZE; i++)
175		INIT_LIST_HEAD(&ieee->ibss_mac_hash[i]);
176
177	for (i = 0; i < 17; i++) {
178	  ieee->last_rxseq_num[i] = -1;
179	  ieee->last_rxfrag_num[i] = -1;
180	  ieee->last_packet_time[i] = 0;
181	}
182
183//These function were added to load crypte module autoly
184	ieee80211_tkip_null();
185	ieee80211_wep_null();
186	ieee80211_ccmp_null();
187
188	return dev;
189
190 failed:
191	if (dev)
192		free_netdev(dev);
193
194	return NULL;
195}
196
197
198void free_ieee80211(struct net_device *dev)
199{
200	struct ieee80211_device *ieee = netdev_priv(dev);
201	int i;
202	//struct list_head *p, *q;
203//	del_timer_sync(&ieee->SwBwTimer);
204	if (ieee->pHTInfo != NULL)
205	{
206		kfree(ieee->pHTInfo);
207		ieee->pHTInfo = NULL;
208	}
209	RemoveAllTS(ieee);
210	ieee80211_softmac_free(ieee);
211	del_timer_sync(&ieee->crypt_deinit_timer);
212	ieee80211_crypt_deinit_entries(ieee, 1);
213
214	for (i = 0; i < WEP_KEYS; i++) {
215		struct ieee80211_crypt_data *crypt = ieee->crypt[i];
216		if (crypt) {
217			if (crypt->ops)
218				crypt->ops->deinit(crypt->priv);
219			kfree(crypt);
220			ieee->crypt[i] = NULL;
221		}
222	}
223
224	ieee80211_networks_free(ieee);
225	free_netdev(dev);
226}
227
228#ifdef CONFIG_IEEE80211_DEBUG
229
230u32 ieee80211_debug_level = 0;
231static int debug = \
232	//		    IEEE80211_DL_INFO	|
233	//		    IEEE80211_DL_WX	|
234	//		    IEEE80211_DL_SCAN	|
235	//		    IEEE80211_DL_STATE	|
236	//		    IEEE80211_DL_MGMT	|
237	//		    IEEE80211_DL_FRAG	|
238	//		    IEEE80211_DL_EAP	|
239	//		    IEEE80211_DL_DROP	|
240	//		    IEEE80211_DL_TX	|
241	//		    IEEE80211_DL_RX	|
242			    //IEEE80211_DL_QOS    |
243	//		    IEEE80211_DL_HT 	|
244	//		    IEEE80211_DL_TS	|
245//			    IEEE80211_DL_BA 	|
246	//		    IEEE80211_DL_REORDER|
247//			    IEEE80211_DL_TRACE  |
248			    //IEEE80211_DL_DATA	|
249			    IEEE80211_DL_ERR	  //awayls open this flags to show error out
250			    ;
251struct proc_dir_entry *ieee80211_proc = NULL;
252
253static int show_debug_level(char *page, char **start, off_t offset,
254			    int count, int *eof, void *data)
255{
256	return snprintf(page, count, "0x%08X\n", ieee80211_debug_level);
257}
258
259static int store_debug_level(struct file *file, const char *buffer,
260			     unsigned long count, void *data)
261{
262	char buf[] = "0x00000000";
263	unsigned long len = min_t(unsigned long, sizeof(buf) - 1, count);
264	char *p = (char *)buf;
265	unsigned long val;
266
267	if (copy_from_user(buf, buffer, len))
268		return count;
269	buf[len] = 0;
270	if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
271		p++;
272		if (p[0] == 'x' || p[0] == 'X')
273			p++;
274		val = simple_strtoul(p, &p, 16);
275	} else
276		val = simple_strtoul(p, &p, 10);
277	if (p == buf)
278		printk(KERN_INFO DRV_NAME
279		       ": %s is not in hex or decimal form.\n", buf);
280	else
281		ieee80211_debug_level = val;
282
283	return strnlen(buf, count);
284}
285
286int __init ieee80211_debug_init(void)
287{
288	struct proc_dir_entry *e;
289
290	ieee80211_debug_level = debug;
291
292	ieee80211_proc = create_proc_entry(DRV_NAME, S_IFDIR, init_net.proc_net);
293	if (ieee80211_proc == NULL) {
294		IEEE80211_ERROR("Unable to create " DRV_NAME
295				" proc directory\n");
296		return -EIO;
297	}
298	e = create_proc_entry("debug_level", S_IFREG | S_IRUGO | S_IWUSR,
299			      ieee80211_proc);
300	if (!e) {
301		remove_proc_entry(DRV_NAME, init_net.proc_net);
302		ieee80211_proc = NULL;
303		return -EIO;
304	}
305	e->read_proc = show_debug_level;
306	e->write_proc = store_debug_level;
307	e->data = NULL;
308
309	return 0;
310}
311
312void __exit ieee80211_debug_exit(void)
313{
314	if (ieee80211_proc) {
315		remove_proc_entry("debug_level", ieee80211_proc);
316		remove_proc_entry(DRV_NAME, init_net.proc_net);
317		ieee80211_proc = NULL;
318	}
319}
320
321#include <linux/moduleparam.h>
322module_param(debug, int, 0444);
323MODULE_PARM_DESC(debug, "debug output mask");
324#endif
325