text: /*******************************************************************************
   *
   * Copyright(c) 2004 Intel Corporation. All rights reserved.
   *
   * Portions of this file are based on the WEP enablement code provided by the
   * Host AP project hostap-drivers v0.1.3
   * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
   * <jkmaline@cc.hut.fi>
   * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
   *
   * This program is free software; you can redistribute it and/or modify it
   * under the terms of version 2 of the GNU General Public License as
   * published by the Free Software Foundation.
   *
   * This program is distributed in the hope that it will be useful, but WITHOUT
   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
   * more details.
   *
   * The full GNU General Public License is included in this distribution in the
   * file called LICENSE.
   *
   * Contact Information:
   * James P. Ketrenos <ipw2100-admin@linux.intel.com>
   * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
   *
   ******************************************************************************/
  
  #include <linux/compiler.h>
  #include <linux/errno.h>
  #include <linux/if_arp.h>
  #include <linux/in6.h>
  #include <linux/in.h>
  #include <linux/ip.h>
  #include <linux/kernel.h>
  #include <linux/module.h>
  #include <linux/netdevice.h>
  #include <linux/pci.h>
  #include <linux/proc_fs.h>
  #include <linux/skbuff.h>
  #include <linux/slab.h>
  #include <linux/tcp.h>
  #include <linux/types.h>
  #include <linux/wireless.h>
  #include <linux/etherdevice.h>
  #include <linux/uaccess.h>
  #include <net/arp.h>
  #include "rtllib.h"
  
  u32 rt_global_debug_component = COMP_ERR;
  EXPORT_SYMBOL(rt_global_debug_component);
  
  static inline int rtllib_networks_allocate(struct rtllib_device *ieee)
  {
  	if (ieee->networks)
  		return 0;
  
  	ieee->networks = kcalloc(MAX_NETWORK_COUNT,
  				 sizeof(struct rtllib_network), GFP_KERNEL);
  	if (!ieee->networks)
  		return -ENOMEM;
  
  	return 0;
  }
  
  static inline void rtllib_networks_free(struct rtllib_device *ieee)
  {
  	if (!ieee->networks)
  		return;
  	kfree(ieee->networks);
  	ieee->networks = NULL;
  }
  
  static inline void rtllib_networks_initialize(struct rtllib_device *ieee)
  {
  	int i;
  
  	INIT_LIST_HEAD(&ieee->network_free_list);
  	INIT_LIST_HEAD(&ieee->network_list);
  	for (i = 0; i < MAX_NETWORK_COUNT; i++)
  		list_add_tail(&ieee->networks[i].list,
  			      &ieee->network_free_list);
  }
  
  struct net_device *alloc_rtllib(int sizeof_priv)
  {
  	struct rtllib_device *ieee = NULL;
  	struct net_device *dev;
  	int i, err;
  
  	pr_debug("rtllib: Initializing...\n");
  
  	dev = alloc_etherdev(sizeof(struct rtllib_device) + sizeof_priv);
  	if (!dev) {
  		pr_err("Unable to allocate net_device.\n");
  		return NULL;
  	}
  	ieee = (struct rtllib_device *)netdev_priv_rsl(dev);
  	memset(ieee, 0, sizeof(struct rtllib_device)+sizeof_priv);
  	ieee->dev = dev;
  
  	err = rtllib_networks_allocate(ieee);
  	if (err) {
  		pr_err("Unable to allocate beacon storage: %d\n", err);
  		goto failed;
  	}
  	rtllib_networks_initialize(ieee);
  
  	/* Default fragmentation threshold is maximum payload size */
  	ieee->fts = DEFAULT_FTS;
  	ieee->scan_age = DEFAULT_MAX_SCAN_AGE;
  	ieee->open_wep = 1;
  
  	/* Default to enabling full open WEP with host based encrypt/decrypt */
  	ieee->host_encrypt = 1;
  	ieee->host_decrypt = 1;
  	ieee->ieee802_1x = 1; /* Default to supporting 802.1x */
  
  	ieee->rtllib_ap_sec_type = rtllib_ap_sec_type;
  
  	spin_lock_init(&ieee->lock);
  	spin_lock_init(&ieee->wpax_suitlist_lock);
  	spin_lock_init(&ieee->reorder_spinlock);
  	atomic_set(&(ieee->atm_swbw), 0);
  
  	/* SAM FIXME */
  	lib80211_crypt_info_init(&ieee->crypt_info, "RTLLIB", &ieee->lock);
  
  	ieee->wpa_enabled = 0;
  	ieee->tkip_countermeasures = 0;
  	ieee->drop_unencrypted = 0;
  	ieee->privacy_invoked = 0;
  	ieee->ieee802_1x = 1;
  	ieee->raw_tx = 0;
  	ieee->hwsec_active = 0;
  
  	memset(ieee->swcamtable, 0, sizeof(struct sw_cam_table) * 32);
  	rtllib_softmac_init(ieee);
  
  	ieee->pHTInfo = kzalloc(sizeof(struct rt_hi_throughput), GFP_KERNEL);
  	if (!ieee->pHTInfo)
  		return NULL;
  
  	HTUpdateDefaultSetting(ieee);
  	HTInitializeHTInfo(ieee);
  	TSInitialize(ieee);
  	for (i = 0; i < IEEE_IBSS_MAC_HASH_SIZE; i++)
  		INIT_LIST_HEAD(&ieee->ibss_mac_hash[i]);
  
  	for (i = 0; i < 17; i++) {
  		ieee->last_rxseq_num[i] = -1;
  		ieee->last_rxfrag_num[i] = -1;
  		ieee->last_packet_time[i] = 0;
  	}
  
  	return dev;
  
   failed:
  	free_netdev(dev);
  	return NULL;
  }
  EXPORT_SYMBOL(alloc_rtllib);
  
  void free_rtllib(struct net_device *dev)
  {
  	struct rtllib_device *ieee = (struct rtllib_device *)
  				      netdev_priv_rsl(dev);
  
  	kfree(ieee->pHTInfo);
  	ieee->pHTInfo = NULL;
  	rtllib_softmac_free(ieee);
  
  	lib80211_crypt_info_free(&ieee->crypt_info);
  
  	rtllib_networks_free(ieee);
  	free_netdev(dev);
  }
  EXPORT_SYMBOL(free_rtllib);
  
  static int __init rtllib_init(void)
  {
  	return 0;
  }
  
  static void __exit rtllib_exit(void)
  {
  }
  
  module_init(rtllib_init);
  module_exit(rtllib_exit);
  
  MODULE_LICENSE("GPL");
  