release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/staging/rtl8192e/ieee80211/ieee80211_module.c

   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/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/pci.h>
  43 #include <linux/proc_fs.h>
  44 #include <linux/skbuff.h>
  45 #include <linux/slab.h>
  46 #include <linux/tcp.h>
  47 #include <linux/types.h>
  48 #include <linux/version.h>
  49 #include <linux/wireless.h>
  50 #include <linux/etherdevice.h>
  51 #include <asm/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
  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
  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
  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
  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
 114         memset(ieee, 0, sizeof(struct ieee80211_device)+sizeof_priv);
 115         ieee->dev = dev;
 116
 117         err = ieee80211_networks_allocate(ieee);
 118         if (err) {
 119                 IEEE80211_ERROR("Unable to allocate beacon storage: %d\n",
 120                                 err);
 121                 goto failed;
 122         }
 123         ieee80211_networks_initialize(ieee);
 124
 125
 126         /* Default fragmentation threshold is maximum payload size */
 127         ieee->fts = DEFAULT_FTS;
 128         ieee->scan_age = DEFAULT_MAX_SCAN_AGE;
 129         ieee->open_wep = 1;
 130
 131         /* Default to enabling full open WEP with host based encrypt/decrypt */
 132         ieee->host_encrypt = 1;
 133         ieee->host_decrypt = 1;
 134         ieee->ieee802_1x = 1; /* Default to supporting 802.1x */
 135
 136         INIT_LIST_HEAD(&ieee->crypt_deinit_list);
 137         init_timer(&ieee->crypt_deinit_timer);
 138         ieee->crypt_deinit_timer.data = (unsigned long)ieee;
 139         ieee->crypt_deinit_timer.function = ieee80211_crypt_deinit_handler;
 140
 141         spin_lock_init(&ieee->lock);
 142         spin_lock_init(&ieee->wpax_suitlist_lock);
 143         spin_lock_init(&ieee->bw_spinlock);
 144         spin_lock_init(&ieee->reorder_spinlock);
 145         //added by WB
 146         atomic_set(&(ieee->atm_chnlop), 0);
 147         atomic_set(&(ieee->atm_swbw), 0);
 148
 149         ieee->wpax_type_set = 0;
 150         ieee->wpa_enabled = 0;
 151         ieee->tkip_countermeasures = 0;
 152         ieee->drop_unencrypted = 0;
 153         ieee->privacy_invoked = 0;
 154         ieee->ieee802_1x = 1;
 155         ieee->raw_tx = 0;
 156         //ieee->hwsec_support = 1; //default support hw security. //use module_param instead.
 157         ieee->hwsec_active = 0; //disable hwsec, switch it on when necessary.
 158
 159         ieee80211_softmac_init(ieee);
 160
 161         ieee->pHTInfo = kzalloc(sizeof(RT_HIGH_THROUGHPUT), GFP_KERNEL);
 162         if (ieee->pHTInfo == NULL)
 163         {
 164                 IEEE80211_DEBUG(IEEE80211_DL_ERR, "can't alloc memory for HTInfo\n");
 165                 return NULL;
 166         }
 167         HTUpdateDefaultSetting(ieee);
 168         HTInitializeHTInfo(ieee); //may move to other place.
 169         TSInitialize(ieee);
 170         for (i = 0; i < IEEE_IBSS_MAC_HASH_SIZE; i++)
 171                 INIT_LIST_HEAD(&ieee->ibss_mac_hash[i]);
 172
 173         for (i = 0; i < 17; i++) {
 174           ieee->last_rxseq_num[i] = -1;
 175           ieee->last_rxfrag_num[i] = -1;
 176           ieee->last_packet_time[i] = 0;
 177         }
 178
 179 //These function were added to load crypte module autoly
 180         ieee80211_tkip_null();
 181         ieee80211_wep_null();
 182         ieee80211_ccmp_null();
 183
 184         return dev;
 185
 186  failed:
 187         if (dev)
 188                 free_netdev(dev);
 189         return NULL;
 190 }
 191
 192
 193 void free_ieee80211(struct net_device *dev)
 194 {
 195         struct ieee80211_device *ieee = netdev_priv(dev);
 196         int i;
 197         if (ieee->pHTInfo != NULL)
 198         {
 199                 kfree(ieee->pHTInfo);
 200                 ieee->pHTInfo = NULL;
 201         }
 202         RemoveAllTS(ieee);
 203         ieee80211_softmac_free(ieee);
 204         del_timer_sync(&ieee->crypt_deinit_timer);
 205         ieee80211_crypt_deinit_entries(ieee, 1);
 206
 207         for (i = 0; i < WEP_KEYS; i++) {
 208                 struct ieee80211_crypt_data *crypt = ieee->crypt[i];
 209                 if (crypt) {
 210                         if (crypt->ops)
 211                                 crypt->ops->deinit(crypt->priv);
 212                         kfree(crypt);
 213                         ieee->crypt[i] = NULL;
 214                 }
 215         }
 216
 217         ieee80211_networks_free(ieee);
 218         free_netdev(dev);
 219 }
 220
 221 #ifdef CONFIG_IEEE80211_DEBUG
 222
 223 u32 ieee80211_debug_level = 0;
 224 static int debug = \
 225         //                  IEEE80211_DL_INFO   |
 226         //                  IEEE80211_DL_WX     |
 227         //                  IEEE80211_DL_SCAN   |
 228         //                  IEEE80211_DL_STATE  |
 229         //                  IEEE80211_DL_MGMT   |
 230         //                  IEEE80211_DL_FRAG   |
 231         //                  IEEE80211_DL_EAP    |
 232         //                  IEEE80211_DL_DROP   |
 233         //                  IEEE80211_DL_TX     |
 234         //                  IEEE80211_DL_RX     |
 235                             //IEEE80211_DL_QOS    |
 236         //                  IEEE80211_DL_HT     |
 237         //                  IEEE80211_DL_TS     |
 238 //                          IEEE80211_DL_BA     |
 239         //                  IEEE80211_DL_REORDER|
 240 //                          IEEE80211_DL_TRACE  |
 241                             //IEEE80211_DL_DATA |
 242                             IEEE80211_DL_ERR      //awayls open this flags to show error out
 243                             ;
 244 struct proc_dir_entry *ieee80211_proc = NULL;
 245
 246 static int show_debug_level(char *page, char **start, off_t offset,
 247                             int count, int *eof, void *data)
 248 {
 249         return snprintf(page, count, "0x%08X\n", ieee80211_debug_level);
 250 }
 251
 252 static int store_debug_level(struct file *file, const char *buffer,
 253                              unsigned long count, void *data)
 254 {
 255         char buf[] = "0x00000000";
 256         unsigned long len = min(sizeof(buf) - 1, (u32)count);
 257         char *p = (char *)buf;
 258         unsigned long val;
 259
 260         if (copy_from_user(buf, buffer, len))
 261                 return count;
 262         buf[len] = 0;
 263         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
 264                 p++;
 265                 if (p[0] == 'x' || p[0] == 'X')
 266                         p++;
 267                 val = simple_strtoul(p, &p, 16);
 268         } else
 269                 val = simple_strtoul(p, &p, 10);
 270         if (p == buf)
 271                 printk(KERN_INFO DRV_NAME
 272                        ": %s is not in hex or decimal form.\n", buf);
 273         else
 274                 ieee80211_debug_level = val;
 275
 276         return strnlen(buf, count);
 277 }
 278
 279 extern int ieee80211_crypto_init(void);
 280 extern void ieee80211_crypto_deinit(void);
 281 extern int ieee80211_crypto_tkip_init(void);
 282 extern void ieee80211_crypto_tkip_exit(void);
 283 extern int ieee80211_crypto_ccmp_init(void);
 284 extern void ieee80211_crypto_ccmp_exit(void);
 285 extern int ieee80211_crypto_wep_init(void);
 286 extern void ieee80211_crypto_wep_exit(void);
 287
 288 int __init ieee80211_rtl_init(void)
 289 {
 290         struct proc_dir_entry *e;
 291         int retval;
 292
 293         retval = ieee80211_crypto_init();
 294         if (retval)
 295                 return retval;
 296         retval = ieee80211_crypto_tkip_init();
 297         if (retval) {
 298                 ieee80211_crypto_deinit();
 299                 return retval;
 300         }
 301         retval = ieee80211_crypto_ccmp_init();
 302         if (retval) {
 303                 ieee80211_crypto_tkip_exit();
 304                 ieee80211_crypto_deinit();
 305                 return retval;
 306         }
 307         retval = ieee80211_crypto_wep_init();
 308         if (retval) {
 309                 ieee80211_crypto_ccmp_exit();
 310                 ieee80211_crypto_tkip_exit();
 311                 ieee80211_crypto_deinit();
 312                 return retval;
 313         }
 314
 315         ieee80211_debug_level = debug;
 316         ieee80211_proc = create_proc_entry(DRV_NAME, S_IFDIR, init_net.proc_net);
 317         if (ieee80211_proc == NULL) {
 318                 IEEE80211_ERROR("Unable to create " DRV_NAME
 319                                 " proc directory\n");
 320                 return -EIO;
 321         }
 322         e = create_proc_entry("debug_level", S_IFREG | S_IRUGO | S_IWUSR,
 323                               ieee80211_proc);
 324         if (!e) {
 325                 remove_proc_entry(DRV_NAME, init_net.proc_net);
 326                 ieee80211_proc = NULL;
 327                 return -EIO;
 328         }
 329         e->read_proc = show_debug_level;
 330         e->write_proc = store_debug_level;
 331         e->data = NULL;
 332
 333         return 0;
 334 }
 335
 336 void __exit ieee80211_rtl_exit(void)
 337 {
 338         if (ieee80211_proc) {
 339                 remove_proc_entry("debug_level", ieee80211_proc);
 340                 remove_proc_entry(DRV_NAME, init_net.proc_net);
 341                 ieee80211_proc = NULL;
 342         }
 343         ieee80211_crypto_wep_exit();
 344         ieee80211_crypto_ccmp_exit();
 345         ieee80211_crypto_tkip_exit();
 346         ieee80211_crypto_deinit();
 347 }
 348
 349 #include <linux/moduleparam.h>
 350 module_param(debug, int, 0444);
 351 MODULE_PARM_DESC(debug, "debug output mask");
 352
 353
 354 #endif