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 IEEE80211_DEBUG(IEEE80211_DL_ERR, "can't alloc memory for HTInfo\n"); 162 goto failed; 163 } 164 HTUpdateDefaultSetting(ieee); 165 HTInitializeHTInfo(ieee); /* may move to other place. */ 166 TSInitialize(ieee); 167 168 for (i = 0; i < IEEE_IBSS_MAC_HASH_SIZE; i++) 169 INIT_LIST_HEAD(&ieee->ibss_mac_hash[i]); 170 171 for (i = 0; i < 17; i++) { 172 ieee->last_rxseq_num[i] = -1; 173 ieee->last_rxfrag_num[i] = -1; 174 ieee->last_packet_time[i] = 0; 175 } 176 177 /* These function were added to load crypte module autoly */ 178 ieee80211_tkip_null(); 179 180 return dev; 181 182 failed: 183 if (dev) 184 free_netdev(dev); 185 186 return NULL; 187 } 188 189 190 void free_ieee80211(struct net_device *dev) 191 { 192 struct ieee80211_device *ieee = netdev_priv(dev); 193 int i; 194 /* struct list_head *p, *q; */ 195 // del_timer_sync(&ieee->SwBwTimer); 196 kfree(ieee->pHTInfo); 197 ieee->pHTInfo = NULL; 198 RemoveAllTS(ieee); 199 ieee80211_softmac_free(ieee); 200 del_timer_sync(&ieee->crypt_deinit_timer); 201 ieee80211_crypt_deinit_entries(ieee, 1); 202 203 for (i = 0; i < WEP_KEYS; i++) { 204 struct ieee80211_crypt_data *crypt = ieee->crypt[i]; 205 if (crypt) { 206 if (crypt->ops) 207 crypt->ops->deinit(crypt->priv); 208 kfree(crypt); 209 ieee->crypt[i] = NULL; 210 } 211 } 212 213 ieee80211_networks_free(ieee); 214 free_netdev(dev); 215 } 216 217 #ifdef CONFIG_IEEE80211_DEBUG 218 219 u32 ieee80211_debug_level; 220 static int debug = \ 221 // IEEE80211_DL_INFO | 222 // IEEE80211_DL_WX | 223 // IEEE80211_DL_SCAN | 224 // IEEE80211_DL_STATE | 225 // IEEE80211_DL_MGMT | 226 // IEEE80211_DL_FRAG | 227 // IEEE80211_DL_EAP | 228 // IEEE80211_DL_DROP | 229 // IEEE80211_DL_TX | 230 // IEEE80211_DL_RX | 231 //IEEE80211_DL_QOS | 232 // IEEE80211_DL_HT | 233 // IEEE80211_DL_TS | 234 // IEEE80211_DL_BA | 235 // IEEE80211_DL_REORDER| 236 // IEEE80211_DL_TRACE | 237 //IEEE80211_DL_DATA | 238 IEEE80211_DL_ERR /* awayls open this flags to show error out */ 239 ; 240 static struct proc_dir_entry *ieee80211_proc; 241 242 static int show_debug_level(struct seq_file *m, void *v) 243 { 244 seq_printf(m, "0x%08X\n", ieee80211_debug_level); 245 246 return 0; 247 } 248 249 static ssize_t write_debug_level(struct file *file, const char __user *buffer, 250 size_t count, loff_t *ppos) 251 { 252 unsigned long val; 253 int err = kstrtoul_from_user(buffer, count, 0, &val); 254 if (err) 255 return err; 256 ieee80211_debug_level = val; 257 return count; 258 } 259 260 static int open_debug_level(struct inode *inode, struct file *file) 261 { 262 return single_open(file, show_debug_level, NULL); 263 } 264 265 static const struct file_operations fops = { 266 .open = open_debug_level, 267 .read = seq_read, 268 .llseek = seq_lseek, 269 .write = write_debug_level, 270 .release = single_release, 271 }; 272 273 int __init ieee80211_debug_init(void) 274 { 275 struct proc_dir_entry *e; 276 277 ieee80211_debug_level = debug; 278 279 ieee80211_proc = proc_mkdir(DRV_NAME, init_net.proc_net); 280 if (ieee80211_proc == NULL) { 281 IEEE80211_ERROR("Unable to create " DRV_NAME 282 " proc directory\n"); 283 return -EIO; 284 } 285 e = proc_create("debug_level", 0644, ieee80211_proc, &fops); 286 if (!e) { 287 remove_proc_entry(DRV_NAME, init_net.proc_net); 288 ieee80211_proc = NULL; 289 return -EIO; 290 } 291 return 0; 292 } 293 294 void __exit ieee80211_debug_exit(void) 295 { 296 if (ieee80211_proc) { 297 remove_proc_entry("debug_level", ieee80211_proc); 298 remove_proc_entry(DRV_NAME, init_net.proc_net); 299 ieee80211_proc = NULL; 300 } 301 } 302 303 module_param(debug, int, 0444); 304 MODULE_PARM_DESC(debug, "debug output mask"); 305 #endif 306