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/*******************************************************************************
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.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59
Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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/version.h>
#include <linux/wireless.h>
#include <linux/etherdevice.h>
#include <linux/uaccess.h>
#include <net/arp.h>
#include "rtllib.h"
#define DRV_NAME "rtllib_92e"
void _setup_timer(struct timer_list *ptimer, void *fun, unsigned long data)
{
ptimer->function = fun;
ptimer->data = data;
init_timer(ptimer);
}
static inline int rtllib_networks_allocate(struct rtllib_device *ieee)
{
if (ieee->networks)
return 0;
ieee->networks = kmalloc(
MAX_NETWORK_COUNT * sizeof(struct rtllib_network),
GFP_KERNEL);
if (!ieee->networks) {
printk(KERN_WARNING "%s: Out of memory allocating beacons\n",
ieee->dev->name);
return -ENOMEM;
}
memset(ieee->networks, 0,
MAX_NETWORK_COUNT * sizeof(struct rtllib_network));
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;
RTLLIB_DEBUG_INFO("Initializing...\n");
dev = alloc_etherdev(sizeof(struct rtllib_device) + sizeof_priv);
if (!dev) {
RTLLIB_ERROR("Unable to network device.\n");
goto failed;
}
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) {
RTLLIB_ERROR("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 */
INIT_LIST_HEAD(&ieee->crypt_deinit_list);
_setup_timer(&ieee->crypt_deinit_timer,
rtllib_crypt_deinit_handler,
(unsigned long) ieee);
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->bw_spinlock);
spin_lock_init(&ieee->reorder_spinlock);
atomic_set(&(ieee->atm_chnlop), 0);
atomic_set(&(ieee->atm_swbw), 0);
ieee->bHalfNMode = false;
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 == NULL) {
RTLLIB_DEBUG(RTLLIB_DL_ERR, "can't alloc memory for HTInfo\n");
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;
}
rtllib_tkip_null();
rtllib_wep_null();
rtllib_ccmp_null();
return dev;
failed:
if (dev)
free_netdev(dev);
return NULL;
}
void free_rtllib(struct net_device *dev)
{
struct rtllib_device *ieee = (struct rtllib_device *)
netdev_priv_rsl(dev);
int i;
if (ieee->pHTInfo != NULL) {
kfree(ieee->pHTInfo);
ieee->pHTInfo = NULL;
}
rtllib_softmac_free(ieee);
del_timer_sync(&ieee->crypt_deinit_timer);
rtllib_crypt_deinit_entries(ieee, 1);
for (i = 0; i < WEP_KEYS; i++) {
struct rtllib_crypt_data *crypt = ieee->crypt[i];
if (crypt) {
if (crypt->ops)
crypt->ops->deinit(crypt->priv);
kfree(crypt);
ieee->crypt[i] = NULL;
}
}
rtllib_networks_free(ieee);
free_netdev(dev);
}
u32 rtllib_debug_level;
static int debug = \
RTLLIB_DL_ERR
;
struct proc_dir_entry *rtllib_proc;
static int show_debug_level(char *page, char **start, off_t offset,
int count, int *eof, void *data)
{
return snprintf(page, count, "0x%08X\n", rtllib_debug_level);
}
static int store_debug_level(struct file *file, const char *buffer,
unsigned long count, void *data)
{
char buf[] = "0x00000000";
unsigned long len = min((unsigned long)sizeof(buf) - 1, count);
char *p = (char *)buf;
unsigned long val;
if (copy_from_user(buf, buffer, len))
return count;
buf[len] = 0;
if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
p++;
if (p[0] == 'x' || p[0] == 'X')
p++;
val = simple_strtoul(p, &p, 16);
} else
val = simple_strtoul(p, &p, 10);
if (p == buf)
printk(KERN_INFO DRV_NAME
": %s is not in hex or decimal form.\n", buf);
else
rtllib_debug_level = val;
return strnlen(buf, count);
}
int __init rtllib_init(void)
{
struct proc_dir_entry *e;
rtllib_debug_level = debug;
rtllib_proc = create_proc_entry(DRV_NAME, S_IFDIR, init_net.proc_net);
if (rtllib_proc == NULL) {
RTLLIB_ERROR("Unable to create " DRV_NAME
" proc directory\n");
return -EIO;
}
e = create_proc_entry("debug_level", S_IFREG | S_IRUGO | S_IWUSR,
rtllib_proc);
if (!e) {
remove_proc_entry(DRV_NAME, init_net.proc_net);
rtllib_proc = NULL;
return -EIO;
}
e->read_proc = show_debug_level;
e->write_proc = store_debug_level;
e->data = NULL;
return 0;
}
void __exit rtllib_exit(void)
{
if (rtllib_proc) {
remove_proc_entry("debug_level", rtllib_proc);
remove_proc_entry(DRV_NAME, init_net.proc_net);
rtllib_proc = NULL;
}
}
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