1 // SPDX-License-Identifier: GPL-2.0 2 /******************************************************************************* 3 * 4 * Copyright(c) 2004 Intel Corporation. All rights reserved. 5 * 6 * Portions of this file are based on the WEP enablement code provided by the 7 * Host AP project hostap-drivers v0.1.3 8 * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen 9 * <jkmaline@cc.hut.fi> 10 * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi> 11 * 12 * This program is free software; you can redistribute it and/or modify it 13 * under the terms of version 2 of the GNU General Public License as 14 * published by the Free Software Foundation. 15 * 16 * This program is distributed in the hope that it will be useful, but WITHOUT 17 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 18 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 19 * more details. 20 * 21 * You should have received a copy of the GNU General Public License along with 22 * this program; if not, write to the Free Software Foundation, Inc., 59 23 * Temple Place - Suite 330, Boston, MA 02111-1307, USA. 24 * 25 * The full GNU General Public License is included in this distribution in the 26 * file called LICENSE. 27 * 28 * Contact Information: 29 * James P. Ketrenos <ipw2100-admin@linux.intel.com> 30 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 31 * 32 ******************************************************************************/ 33 34 #include <linux/compiler.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(MAX_NETWORK_COUNT, 68 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 struct net_device *alloc_ieee80211(int sizeof_priv) 98 { 99 struct ieee80211_device *ieee; 100 struct net_device *dev; 101 int i, err; 102 103 IEEE80211_DEBUG_INFO("Initializing...\n"); 104 105 dev = alloc_etherdev(sizeof(struct ieee80211_device) + sizeof_priv); 106 if (!dev) { 107 IEEE80211_ERROR("Unable to network device.\n"); 108 goto failed; 109 } 110 111 ieee = netdev_priv(dev); 112 memset(ieee, 0, sizeof(struct ieee80211_device) + sizeof_priv); 113 ieee->dev = dev; 114 115 err = ieee80211_networks_allocate(ieee); 116 if (err) { 117 IEEE80211_ERROR("Unable to allocate beacon storage: %d\n", 118 err); 119 goto failed; 120 } 121 ieee80211_networks_initialize(ieee); 122 123 /* Default fragmentation threshold is maximum payload size */ 124 ieee->fts = DEFAULT_FTS; 125 ieee->scan_age = DEFAULT_MAX_SCAN_AGE; 126 ieee->open_wep = 1; 127 128 /* Default to enabling full open WEP with host based encrypt/decrypt */ 129 ieee->host_encrypt = 1; 130 ieee->host_decrypt = 1; 131 ieee->ieee802_1x = 1; /* Default to supporting 802.1x */ 132 133 INIT_LIST_HEAD(&ieee->crypt_deinit_list); 134 timer_setup(&ieee->crypt_deinit_timer, ieee80211_crypt_deinit_handler, 135 0); 136 137 spin_lock_init(&ieee->lock); 138 spin_lock_init(&ieee->wpax_suitlist_lock); 139 spin_lock_init(&ieee->bw_spinlock); 140 spin_lock_init(&ieee->reorder_spinlock); 141 /* added by WB */ 142 atomic_set(&ieee->atm_chnlop, 0); 143 atomic_set(&ieee->atm_swbw, 0); 144 145 ieee->wpax_type_set = 0; 146 ieee->wpa_enabled = 0; 147 ieee->tkip_countermeasures = 0; 148 ieee->drop_unencrypted = 0; 149 ieee->privacy_invoked = 0; 150 ieee->ieee802_1x = 1; 151 ieee->raw_tx = 0; 152 //ieee->hwsec_support = 1; //defalt support hw security. //use module_param instead. 153 ieee->hwsec_active = 0; /* disable hwsec, switch it on when necessary. */ 154 155 ieee80211_softmac_init(ieee); 156 157 ieee->pHTInfo = kzalloc(sizeof(RT_HIGH_THROUGHPUT), GFP_KERNEL); 158 if (ieee->pHTInfo == NULL) { 159 IEEE80211_DEBUG(IEEE80211_DL_ERR, "can't alloc memory for HTInfo\n"); 160 161 /* By this point in code ieee80211_networks_allocate() has been 162 * successfully called so the memory allocated should be freed 163 */ 164 ieee80211_networks_free(ieee); 165 goto failed; 166 } 167 HTUpdateDefaultSetting(ieee); 168 HTInitializeHTInfo(ieee); /* may move to other place. */ 169 TSInitialize(ieee); 170 171 for (i = 0; i < IEEE_IBSS_MAC_HASH_SIZE; i++) 172 INIT_LIST_HEAD(&ieee->ibss_mac_hash[i]); 173 174 for (i = 0; i < 17; i++) { 175 ieee->last_rxseq_num[i] = -1; 176 ieee->last_rxfrag_num[i] = -1; 177 ieee->last_packet_time[i] = 0; 178 } 179 180 /* These function were added to load crypte module autoly */ 181 ieee80211_tkip_null(); 182 183 return dev; 184 185 failed: 186 if (dev) 187 free_netdev(dev); 188 189 return NULL; 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]; 207 208 if (crypt) { 209 if (crypt->ops) 210 crypt->ops->deinit(crypt->priv); 211 kfree(crypt); 212 ieee->crypt[i] = NULL; 213 } 214 } 215 216 ieee80211_networks_free(ieee); 217 free_netdev(dev); 218 } 219 220 #ifdef CONFIG_IEEE80211_DEBUG 221 222 u32 ieee80211_debug_level; 223 static int debug = // 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); 256 257 if (err) 258 return err; 259 ieee80211_debug_level = val; 260 return count; 261 } 262 263 static int open_debug_level(struct inode *inode, struct file *file) 264 { 265 return single_open(file, show_debug_level, NULL); 266 } 267 268 static const struct file_operations fops = { 269 .open = open_debug_level, 270 .read = seq_read, 271 .llseek = seq_lseek, 272 .write = write_debug_level, 273 .release = single_release, 274 }; 275 276 int __init ieee80211_debug_init(void) 277 { 278 struct proc_dir_entry *e; 279 280 ieee80211_debug_level = debug; 281 282 ieee80211_proc = proc_mkdir(DRV_NAME, init_net.proc_net); 283 if (!ieee80211_proc) { 284 IEEE80211_ERROR("Unable to create " DRV_NAME 285 " proc directory\n"); 286 return -EIO; 287 } 288 e = proc_create("debug_level", 0644, 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