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 ieee80211_ccmp_null(); 181 182 return dev; 183 184 failed: 185 if (dev) 186 free_netdev(dev); 187 188 return NULL; 189 } 190 191 192 void free_ieee80211(struct net_device *dev) 193 { 194 struct ieee80211_device *ieee = netdev_priv(dev); 195 int i; 196 /* struct list_head *p, *q; */ 197 // del_timer_sync(&ieee->SwBwTimer); 198 kfree(ieee->pHTInfo); 199 ieee->pHTInfo = NULL; 200 RemoveAllTS(ieee); 201 ieee80211_softmac_free(ieee); 202 del_timer_sync(&ieee->crypt_deinit_timer); 203 ieee80211_crypt_deinit_entries(ieee, 1); 204 205 for (i = 0; i < WEP_KEYS; i++) { 206 struct ieee80211_crypt_data *crypt = ieee->crypt[i]; 207 if (crypt) { 208 if (crypt->ops) 209 crypt->ops->deinit(crypt->priv); 210 kfree(crypt); 211 ieee->crypt[i] = NULL; 212 } 213 } 214 215 ieee80211_networks_free(ieee); 216 free_netdev(dev); 217 } 218 219 #ifdef CONFIG_IEEE80211_DEBUG 220 221 u32 ieee80211_debug_level; 222 static int debug = \ 223 // IEEE80211_DL_INFO | 224 // IEEE80211_DL_WX | 225 // IEEE80211_DL_SCAN | 226 // IEEE80211_DL_STATE | 227 // IEEE80211_DL_MGMT | 228 // IEEE80211_DL_FRAG | 229 // IEEE80211_DL_EAP | 230 // IEEE80211_DL_DROP | 231 // IEEE80211_DL_TX | 232 // IEEE80211_DL_RX | 233 //IEEE80211_DL_QOS | 234 // IEEE80211_DL_HT | 235 // IEEE80211_DL_TS | 236 // IEEE80211_DL_BA | 237 // IEEE80211_DL_REORDER| 238 // IEEE80211_DL_TRACE | 239 //IEEE80211_DL_DATA | 240 IEEE80211_DL_ERR /* awayls open this flags to show error out */ 241 ; 242 static struct proc_dir_entry *ieee80211_proc; 243 244 static int show_debug_level(struct seq_file *m, void *v) 245 { 246 seq_printf(m, "0x%08X\n", ieee80211_debug_level); 247 248 return 0; 249 } 250 251 static ssize_t write_debug_level(struct file *file, const char __user *buffer, 252 size_t count, loff_t *ppos) 253 { 254 unsigned long val; 255 int err = kstrtoul_from_user(buffer, count, 0, &val); 256 if (err) 257 return err; 258 ieee80211_debug_level = val; 259 return count; 260 } 261 262 static int open_debug_level(struct inode *inode, struct file *file) 263 { 264 return single_open(file, show_debug_level, NULL); 265 } 266 267 static const struct file_operations fops = { 268 .open = open_debug_level, 269 .read = seq_read, 270 .llseek = seq_lseek, 271 .write = write_debug_level, 272 .release = single_release, 273 }; 274 275 int __init ieee80211_debug_init(void) 276 { 277 struct proc_dir_entry *e; 278 279 ieee80211_debug_level = debug; 280 281 ieee80211_proc = proc_mkdir(DRV_NAME, init_net.proc_net); 282 if (ieee80211_proc == NULL) { 283 IEEE80211_ERROR("Unable to create " DRV_NAME 284 " proc directory\n"); 285 return -EIO; 286 } 287 e = proc_create("debug_level", S_IRUGO | S_IWUSR, 288 ieee80211_proc, &fops); 289 if (!e) { 290 remove_proc_entry(DRV_NAME, init_net.proc_net); 291 ieee80211_proc = NULL; 292 return -EIO; 293 } 294 return 0; 295 } 296 297 void __exit ieee80211_debug_exit(void) 298 { 299 if (ieee80211_proc) { 300 remove_proc_entry("debug_level", ieee80211_proc); 301 remove_proc_entry(DRV_NAME, init_net.proc_net); 302 ieee80211_proc = NULL; 303 } 304 } 305 306 module_param(debug, int, 0444); 307 MODULE_PARM_DESC(debug, "debug output mask"); 308 #endif 309