drivers/staging/rtl8192e/rtllib_module.c

   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/errno.h>
  35 #include <linux/if_arp.h>
  36 #include <linux/in6.h>
  37 #include <linux/in.h>
  38 #include <linux/ip.h>
  39 #include <linux/kernel.h>
  40 #include <linux/module.h>
  41 #include <linux/netdevice.h>
  42 #include <linux/pci.h>
  43 #include <linux/proc_fs.h>
  44 #include <linux/skbuff.h>
  45 #include <linux/slab.h>
  46 #include <linux/tcp.h>
  47 #include <linux/types.h>
  48 #include <linux/wireless.h>
  49 #include <linux/etherdevice.h>
  50 #include <linux/uaccess.h>
  51 #include <net/arp.h>
  52
  53 #include "rtllib.h"
  54
  55
  56 u32 rt_global_debug_component = COMP_ERR;
  57 EXPORT_SYMBOL(rt_global_debug_component);
  58
  59
  60
  61 static inline int rtllib_networks_allocate(struct rtllib_device *ieee)
  62 {
  63         if (ieee->networks)
  64                 return 0;
  65
  66         ieee->networks = kzalloc(
  67                 MAX_NETWORK_COUNT * sizeof(struct rtllib_network),
  68                 GFP_KERNEL);
  69         if (!ieee->networks)
  70                 return -ENOMEM;
  71
  72         return 0;
  73 }
  74
  75 static inline void rtllib_networks_free(struct rtllib_device *ieee)
  76 {
  77         if (!ieee->networks)
  78                 return;
  79         kfree(ieee->networks);
  80         ieee->networks = NULL;
  81 }
  82
  83 static inline void rtllib_networks_initialize(struct rtllib_device *ieee)
  84 {
  85         int i;
  86
  87         INIT_LIST_HEAD(&ieee->network_free_list);
  88         INIT_LIST_HEAD(&ieee->network_list);
  89         for (i = 0; i < MAX_NETWORK_COUNT; i++)
  90                 list_add_tail(&ieee->networks[i].list,
  91                               &ieee->network_free_list);
  92 }
  93
  94 struct net_device *alloc_rtllib(int sizeof_priv)
  95 {
  96         struct rtllib_device *ieee = NULL;
  97         struct net_device *dev;
  98         int i, err;
  99
 100         pr_debug("rtllib: Initializing...\n");
 101
 102         dev = alloc_etherdev(sizeof(struct rtllib_device) + sizeof_priv);
 103         if (!dev) {
 104                 pr_err("Unable to allocate net_device.\n");
 105                 return NULL;
 106         }
 107         ieee = (struct rtllib_device *)netdev_priv_rsl(dev);
 108         memset(ieee, 0, sizeof(struct rtllib_device)+sizeof_priv);
 109         ieee->dev = dev;
 110
 111         err = rtllib_networks_allocate(ieee);
 112         if (err) {
 113                 pr_err("Unable to allocate beacon storage: %d\n", err);
 114                 goto failed;
 115         }
 116         rtllib_networks_initialize(ieee);
 117
 118
 119         /* Default fragmentation threshold is maximum payload size */
 120         ieee->fts = DEFAULT_FTS;
 121         ieee->scan_age = DEFAULT_MAX_SCAN_AGE;
 122         ieee->open_wep = 1;
 123
 124         /* Default to enabling full open WEP with host based encrypt/decrypt */
 125         ieee->host_encrypt = 1;
 126         ieee->host_decrypt = 1;
 127         ieee->ieee802_1x = 1; /* Default to supporting 802.1x */
 128
 129         ieee->rtllib_ap_sec_type = rtllib_ap_sec_type;
 130
 131         spin_lock_init(&ieee->lock);
 132         spin_lock_init(&ieee->wpax_suitlist_lock);
 133         spin_lock_init(&ieee->reorder_spinlock);
 134         atomic_set(&(ieee->atm_swbw), 0);
 135
 136         /* SAM FIXME */
 137         lib80211_crypt_info_init(&ieee->crypt_info, "RTLLIB", &ieee->lock);
 138
 139         ieee->wpa_enabled = 0;
 140         ieee->tkip_countermeasures = 0;
 141         ieee->drop_unencrypted = 0;
 142         ieee->privacy_invoked = 0;
 143         ieee->ieee802_1x = 1;
 144         ieee->raw_tx = 0;
 145         ieee->hwsec_active = 0;
 146
 147         memset(ieee->swcamtable, 0, sizeof(struct sw_cam_table) * 32);
 148         rtllib_softmac_init(ieee);
 149
 150         ieee->pHTInfo = kzalloc(sizeof(struct rt_hi_throughput), GFP_KERNEL);
 151         if (ieee->pHTInfo == NULL)
 152                 return NULL;
 153
 154         HTUpdateDefaultSetting(ieee);
 155         HTInitializeHTInfo(ieee);
 156         TSInitialize(ieee);
 157         for (i = 0; i < IEEE_IBSS_MAC_HASH_SIZE; i++)
 158                 INIT_LIST_HEAD(&ieee->ibss_mac_hash[i]);
 159
 160         for (i = 0; i < 17; i++) {
 161                 ieee->last_rxseq_num[i] = -1;
 162                 ieee->last_rxfrag_num[i] = -1;
 163                 ieee->last_packet_time[i] = 0;
 164         }
 165
 166         return dev;
 167
 168  failed:
 169         free_netdev(dev);
 170         return NULL;
 171 }
 172 EXPORT_SYMBOL(alloc_rtllib);
 173
 174 void free_rtllib(struct net_device *dev)
 175 {
 176         struct rtllib_device *ieee = (struct rtllib_device *)
 177                                       netdev_priv_rsl(dev);
 178
 179         kfree(ieee->pHTInfo);
 180         ieee->pHTInfo = NULL;
 181         rtllib_softmac_free(ieee);
 182
 183         lib80211_crypt_info_free(&ieee->crypt_info);
 184
 185         rtllib_networks_free(ieee);
 186         free_netdev(dev);
 187 }
 188 EXPORT_SYMBOL(free_rtllib);
 189
 190 static int __init rtllib_init(void)
 191 {
 192         return 0;
 193 }
 194
 195 static void __exit rtllib_exit(void)
 196 {
 197 }
 198
 199 module_init(rtllib_init);
 200 module_exit(rtllib_exit);
 201
 202 MODULE_LICENSE("GPL");