drivers/staging/rtl8192su/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/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
  57 MODULE_DESCRIPTION("802.11 data/management/control stack");
  58 MODULE_AUTHOR("Copyright (C) 2004 Intel Corporation <jketreno@linux.intel.com>");
  59 MODULE_LICENSE("GPL");
  60
  61 #define DRV_NAME "ieee80211"
  62
  63 static 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
  83 static 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
  91 static 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
 102 struct 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 = (RT_HIGH_THROUGHPUT*)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
 198 void 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 1
 205         if (ieee->pHTInfo != NULL)
 206         {
 207                 kfree(ieee->pHTInfo);
 208                 ieee->pHTInfo = NULL;
 209         }
 210 #endif
 211         RemoveAllTS(ieee);
 212         ieee80211_softmac_free(ieee);
 213         del_timer_sync(&ieee->crypt_deinit_timer);
 214         ieee80211_crypt_deinit_entries(ieee, 1);
 215
 216         for (i = 0; i < WEP_KEYS; i++) {
 217                 struct ieee80211_crypt_data *crypt = ieee->crypt[i];
 218                 if (crypt) {
 219                         if (crypt->ops) {
 220                                 crypt->ops->deinit(crypt->priv);
 221                                 module_put(crypt->ops->owner);
 222                         }
 223                         kfree(crypt);
 224                         ieee->crypt[i] = NULL;
 225                 }
 226         }
 227
 228         ieee80211_networks_free(ieee);
 229         free_netdev(dev);
 230 }
 231
 232 #ifdef CONFIG_IEEE80211_DEBUG
 233
 234 u32 ieee80211_debug_level = 0;
 235 static int debug = \
 236         //                  IEEE80211_DL_INFO   |
 237         //                  IEEE80211_DL_WX     |
 238         //                  IEEE80211_DL_SCAN   |
 239         //                  IEEE80211_DL_STATE  |
 240         //                  IEEE80211_DL_MGMT   |
 241         //                  IEEE80211_DL_FRAG   |
 242         //                  IEEE80211_DL_EAP    |
 243         //                  IEEE80211_DL_DROP   |
 244         //                  IEEE80211_DL_TX     |
 245         //                  IEEE80211_DL_RX     |
 246                             //IEEE80211_DL_QOS    |
 247         //                  IEEE80211_DL_HT     |
 248         //                  IEEE80211_DL_TS     |
 249 //                          IEEE80211_DL_BA     |
 250         //                  IEEE80211_DL_REORDER|
 251 //                          IEEE80211_DL_TRACE  |
 252                             //IEEE80211_DL_DATA |
 253                             IEEE80211_DL_ERR      //awayls open this flags to show error out
 254                             ;
 255 struct proc_dir_entry *ieee80211_proc = NULL;
 256
 257 static int show_debug_level(char *page, char **start, off_t offset,
 258                             int count, int *eof, void *data)
 259 {
 260         return snprintf(page, count, "0x%08X\n", ieee80211_debug_level);
 261 }
 262
 263 static int store_debug_level(struct file *file, const char *buffer,
 264                              unsigned long count, void *data)
 265 {
 266         char buf[] = "0x00000000";
 267         unsigned long len = min(sizeof(buf) - 1, count);
 268         char *p = (char *)buf;
 269         unsigned long val;
 270
 271         if (copy_from_user(buf, buffer, len))
 272                 return count;
 273         buf[len] = 0;
 274         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
 275                 p++;
 276                 if (p[0] == 'x' || p[0] == 'X')
 277                         p++;
 278                 val = simple_strtoul(p, &p, 16);
 279         } else
 280                 val = simple_strtoul(p, &p, 10);
 281         if (p == buf)
 282                 printk(KERN_INFO DRV_NAME
 283                        ": %s is not in hex or decimal form.\n", buf);
 284         else
 285                 ieee80211_debug_level = val;
 286
 287         return strnlen(buf, count);
 288 }
 289
 290 int __init ieee80211_debug_init(void)
 291 {
 292         struct proc_dir_entry *e;
 293
 294         ieee80211_debug_level = debug;
 295
 296         ieee80211_proc = create_proc_entry(DRV_NAME, S_IFDIR, init_net.proc_net);
 297         if (ieee80211_proc == NULL) {
 298                 IEEE80211_ERROR("Unable to create " DRV_NAME
 299                                 " proc directory\n");
 300                 return -EIO;
 301         }
 302         e = create_proc_entry("debug_level", S_IFREG | S_IRUGO | S_IWUSR,
 303                               ieee80211_proc);
 304         if (!e) {
 305                 remove_proc_entry(DRV_NAME, init_net.proc_net);
 306                 ieee80211_proc = NULL;
 307                 return -EIO;
 308         }
 309         e->read_proc = show_debug_level;
 310         e->write_proc = store_debug_level;
 311         e->data = NULL;
 312
 313         return 0;
 314 }
 315
 316 void __exit ieee80211_debug_exit(void)
 317 {
 318         if (ieee80211_proc) {
 319                 remove_proc_entry("debug_level", ieee80211_proc);
 320                 remove_proc_entry(DRV_NAME, init_net.proc_net);
 321                 ieee80211_proc = NULL;
 322         }
 323 }
 324
 325 #include <linux/moduleparam.h>
 326 module_param(debug, int, 0444);
 327 MODULE_PARM_DESC(debug, "debug output mask");
 328 #endif