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 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 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 setup_timer(&ieee->crypt_deinit_timer, 137 ieee80211_crypt_deinit_handler, (unsigned long)ieee); 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 { 162 IEEE80211_DEBUG(IEEE80211_DL_ERR, "can't alloc memory for HTInfo\n"); 163 goto failed; 164 } 165 HTUpdateDefaultSetting(ieee); 166 HTInitializeHTInfo(ieee); /* may move to other place. */ 167 TSInitialize(ieee); 168 169 for (i = 0; i < IEEE_IBSS_MAC_HASH_SIZE; i++) 170 INIT_LIST_HEAD(&ieee->ibss_mac_hash[i]); 171 172 for (i = 0; i < 17; i++) { 173 ieee->last_rxseq_num[i] = -1; 174 ieee->last_rxfrag_num[i] = -1; 175 ieee->last_packet_time[i] = 0; 176 } 177 178 /* These function were added to load crypte module autoly */ 179 ieee80211_tkip_null(); 180 181 return dev; 182 183 failed: 184 if (dev) 185 free_netdev(dev); 186 187 return NULL; 188 } 189 190 191 void free_ieee80211(struct net_device *dev) 192 { 193 struct ieee80211_device *ieee = netdev_priv(dev); 194 int i; 195 /* struct list_head *p, *q; */ 196 // del_timer_sync(&ieee->SwBwTimer); 197 kfree(ieee->pHTInfo); 198 ieee->pHTInfo = NULL; 199 RemoveAllTS(ieee); 200 ieee80211_softmac_free(ieee); 201 del_timer_sync(&ieee->crypt_deinit_timer); 202 ieee80211_crypt_deinit_entries(ieee, 1); 203 204 for (i = 0; i < WEP_KEYS; i++) { 205 struct ieee80211_crypt_data *crypt = ieee->crypt[i]; 206 if (crypt) { 207 if (crypt->ops) 208 crypt->ops->deinit(crypt->priv); 209 kfree(crypt); 210 ieee->crypt[i] = NULL; 211 } 212 } 213 214 ieee80211_networks_free(ieee); 215 free_netdev(dev); 216 } 217 218 #ifdef CONFIG_IEEE80211_DEBUG 219 220 u32 ieee80211_debug_level; 221 static int debug = \ 222 // IEEE80211_DL_INFO | 223 // IEEE80211_DL_WX | 224 // IEEE80211_DL_SCAN | 225 // IEEE80211_DL_STATE | 226 // IEEE80211_DL_MGMT | 227 // IEEE80211_DL_FRAG | 228 // IEEE80211_DL_EAP | 229 // IEEE80211_DL_DROP | 230 // IEEE80211_DL_TX | 231 // IEEE80211_DL_RX | 232 //IEEE80211_DL_QOS | 233 // IEEE80211_DL_HT | 234 // IEEE80211_DL_TS | 235 // IEEE80211_DL_BA | 236 // IEEE80211_DL_REORDER| 237 // IEEE80211_DL_TRACE | 238 //IEEE80211_DL_DATA | 239 IEEE80211_DL_ERR /* awayls open this flags to show error out */ 240 ; 241 static struct proc_dir_entry *ieee80211_proc; 242 243 static int show_debug_level(struct seq_file *m, void *v) 244 { 245 seq_printf(m, "0x%08X\n", ieee80211_debug_level); 246 247 return 0; 248 } 249 250 static ssize_t write_debug_level(struct file *file, const char __user *buffer, 251 size_t count, loff_t *ppos) 252 { 253 unsigned long val; 254 int err = kstrtoul_from_user(buffer, count, 0, &val); 255 if (err) 256 return err; 257 ieee80211_debug_level = val; 258 return count; 259 } 260 261 static int open_debug_level(struct inode *inode, struct file *file) 262 { 263 return single_open(file, show_debug_level, NULL); 264 } 265 266 static const struct file_operations fops = { 267 .open = open_debug_level, 268 .read = seq_read, 269 .llseek = seq_lseek, 270 .write = write_debug_level, 271 .release = single_release, 272 }; 273 274 int __init ieee80211_debug_init(void) 275 { 276 struct proc_dir_entry *e; 277 278 ieee80211_debug_level = debug; 279 280 ieee80211_proc = proc_mkdir(DRV_NAME, init_net.proc_net); 281 if (ieee80211_proc == NULL) { 282 IEEE80211_ERROR("Unable to create " DRV_NAME 283 " proc directory\n"); 284 return -EIO; 285 } 286 e = proc_create("debug_level", S_IRUGO | S_IWUSR, 287 ieee80211_proc, &fops); 288 if (!e) { 289 remove_proc_entry(DRV_NAME, init_net.proc_net); 290 ieee80211_proc = NULL; 291 return -EIO; 292 } 293 return 0; 294 } 295 296 void __exit ieee80211_debug_exit(void) 297 { 298 if (ieee80211_proc) { 299 remove_proc_entry("debug_level", ieee80211_proc); 300 remove_proc_entry(DRV_NAME, init_net.proc_net); 301 ieee80211_proc = NULL; 302 } 303 } 304 305 module_param(debug, int, 0444); 306 MODULE_PARM_DESC(debug, "debug output mask"); 307 #endif 308