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path: root/drivers/net/wireless/intel/ipw2x00/libipw_module.c
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Diffstat (limited to 'drivers/net/wireless/intel/ipw2x00/libipw_module.c')
-rw-r--r--drivers/net/wireless/intel/ipw2x00/libipw_module.c321
1 files changed, 321 insertions, 0 deletions
diff --git a/drivers/net/wireless/intel/ipw2x00/libipw_module.c b/drivers/net/wireless/intel/ipw2x00/libipw_module.c
new file mode 100644
index 000000000000..60f28740f6af
--- /dev/null
+++ b/drivers/net/wireless/intel/ipw2x00/libipw_module.c
@@ -0,0 +1,321 @@
+/*******************************************************************************
+
+ Copyright(c) 2004-2005 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
+ <j@w1.fi>
+ Copyright (c) 2002-2003, Jouni Malinen <j@w1.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:
+ Intel Linux Wireless <ilw@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/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 <asm/uaccess.h>
+#include <net/net_namespace.h>
+#include <net/arp.h>
+
+#include "libipw.h"
+
+#define DRV_DESCRIPTION "802.11 data/management/control stack"
+#define DRV_NAME "libipw"
+#define DRV_PROCNAME "ieee80211"
+#define DRV_VERSION LIBIPW_VERSION
+#define DRV_COPYRIGHT "Copyright (C) 2004-2005 Intel Corporation <jketreno@linux.intel.com>"
+
+MODULE_VERSION(DRV_VERSION);
+MODULE_DESCRIPTION(DRV_DESCRIPTION);
+MODULE_AUTHOR(DRV_COPYRIGHT);
+MODULE_LICENSE("GPL");
+
+static struct cfg80211_ops libipw_config_ops = { };
+static void *libipw_wiphy_privid = &libipw_wiphy_privid;
+
+static int libipw_networks_allocate(struct libipw_device *ieee)
+{
+ int i, j;
+
+ for (i = 0; i < MAX_NETWORK_COUNT; i++) {
+ ieee->networks[i] = kzalloc(sizeof(struct libipw_network),
+ GFP_KERNEL);
+ if (!ieee->networks[i]) {
+ LIBIPW_ERROR("Out of memory allocating beacons\n");
+ for (j = 0; j < i; j++)
+ kfree(ieee->networks[j]);
+ return -ENOMEM;
+ }
+ }
+
+ return 0;
+}
+
+static inline void libipw_networks_free(struct libipw_device *ieee)
+{
+ int i;
+
+ for (i = 0; i < MAX_NETWORK_COUNT; i++)
+ kfree(ieee->networks[i]);
+}
+
+void libipw_networks_age(struct libipw_device *ieee,
+ unsigned long age_secs)
+{
+ struct libipw_network *network = NULL;
+ unsigned long flags;
+ unsigned long age_jiffies = msecs_to_jiffies(age_secs * MSEC_PER_SEC);
+
+ spin_lock_irqsave(&ieee->lock, flags);
+ list_for_each_entry(network, &ieee->network_list, list) {
+ network->last_scanned -= age_jiffies;
+ }
+ spin_unlock_irqrestore(&ieee->lock, flags);
+}
+EXPORT_SYMBOL(libipw_networks_age);
+
+static void libipw_networks_initialize(struct libipw_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);
+}
+
+int libipw_change_mtu(struct net_device *dev, int new_mtu)
+{
+ if ((new_mtu < 68) || (new_mtu > LIBIPW_DATA_LEN))
+ return -EINVAL;
+ dev->mtu = new_mtu;
+ return 0;
+}
+EXPORT_SYMBOL(libipw_change_mtu);
+
+struct net_device *alloc_libipw(int sizeof_priv, int monitor)
+{
+ struct libipw_device *ieee;
+ struct net_device *dev;
+ int err;
+
+ LIBIPW_DEBUG_INFO("Initializing...\n");
+
+ dev = alloc_etherdev(sizeof(struct libipw_device) + sizeof_priv);
+ if (!dev)
+ goto failed;
+
+ ieee = netdev_priv(dev);
+
+ ieee->dev = dev;
+
+ if (!monitor) {
+ ieee->wdev.wiphy = wiphy_new(&libipw_config_ops, 0);
+ if (!ieee->wdev.wiphy) {
+ LIBIPW_ERROR("Unable to allocate wiphy.\n");
+ goto failed_free_netdev;
+ }
+
+ ieee->dev->ieee80211_ptr = &ieee->wdev;
+ ieee->wdev.iftype = NL80211_IFTYPE_STATION;
+
+ /* Fill-out wiphy structure bits we know... Not enough info
+ here to call set_wiphy_dev or set MAC address or channel info
+ -- have to do that in ->ndo_init... */
+ ieee->wdev.wiphy->privid = libipw_wiphy_privid;
+
+ ieee->wdev.wiphy->max_scan_ssids = 1;
+ ieee->wdev.wiphy->max_scan_ie_len = 0;
+ ieee->wdev.wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
+ | BIT(NL80211_IFTYPE_ADHOC);
+ }
+
+ err = libipw_networks_allocate(ieee);
+ if (err) {
+ LIBIPW_ERROR("Unable to allocate beacon storage: %d\n", err);
+ goto failed_free_wiphy;
+ }
+ libipw_networks_initialize(ieee);
+
+ /* Default fragmentation threshold is maximum payload size */
+ ieee->fts = DEFAULT_FTS;
+ ieee->rts = 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->host_mc_decrypt = 1;
+
+ /* Host fragmentation in Open mode. Default is enabled.
+ * Note: host fragmentation is always enabled if host encryption
+ * is enabled. For cards can do hardware encryption, they must do
+ * hardware fragmentation as well. So we don't need a variable
+ * like host_enc_frag. */
+ ieee->host_open_frag = 1;
+ ieee->ieee802_1x = 1; /* Default to supporting 802.1x */
+
+ spin_lock_init(&ieee->lock);
+
+ lib80211_crypt_info_init(&ieee->crypt_info, dev->name, &ieee->lock);
+
+ ieee->wpa_enabled = 0;
+ ieee->drop_unencrypted = 0;
+ ieee->privacy_invoked = 0;
+
+ return dev;
+
+failed_free_wiphy:
+ if (!monitor)
+ wiphy_free(ieee->wdev.wiphy);
+failed_free_netdev:
+ free_netdev(dev);
+failed:
+ return NULL;
+}
+EXPORT_SYMBOL(alloc_libipw);
+
+void free_libipw(struct net_device *dev, int monitor)
+{
+ struct libipw_device *ieee = netdev_priv(dev);
+
+ lib80211_crypt_info_free(&ieee->crypt_info);
+
+ libipw_networks_free(ieee);
+
+ /* free cfg80211 resources */
+ if (!monitor)
+ wiphy_free(ieee->wdev.wiphy);
+
+ free_netdev(dev);
+}
+EXPORT_SYMBOL(free_libipw);
+
+#ifdef CONFIG_LIBIPW_DEBUG
+
+static int debug = 0;
+u32 libipw_debug_level = 0;
+EXPORT_SYMBOL_GPL(libipw_debug_level);
+static struct proc_dir_entry *libipw_proc = NULL;
+
+static int debug_level_proc_show(struct seq_file *m, void *v)
+{
+ seq_printf(m, "0x%08X\n", libipw_debug_level);
+ return 0;
+}
+
+static int debug_level_proc_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, debug_level_proc_show, NULL);
+}
+
+static ssize_t debug_level_proc_write(struct file *file,
+ const char __user *buffer, size_t count, loff_t *pos)
+{
+ char buf[] = "0x00000000\n";
+ size_t len = min(sizeof(buf) - 1, count);
+ unsigned long val;
+
+ if (copy_from_user(buf, buffer, len))
+ return count;
+ buf[len] = 0;
+ if (sscanf(buf, "%li", &val) != 1)
+ printk(KERN_INFO DRV_NAME
+ ": %s is not in hex or decimal form.\n", buf);
+ else
+ libipw_debug_level = val;
+
+ return strnlen(buf, len);
+}
+
+static const struct file_operations debug_level_proc_fops = {
+ .owner = THIS_MODULE,
+ .open = debug_level_proc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .write = debug_level_proc_write,
+};
+#endif /* CONFIG_LIBIPW_DEBUG */
+
+static int __init libipw_init(void)
+{
+#ifdef CONFIG_LIBIPW_DEBUG
+ struct proc_dir_entry *e;
+
+ libipw_debug_level = debug;
+ libipw_proc = proc_mkdir(DRV_PROCNAME, init_net.proc_net);
+ if (libipw_proc == NULL) {
+ LIBIPW_ERROR("Unable to create " DRV_PROCNAME
+ " proc directory\n");
+ return -EIO;
+ }
+ e = proc_create("debug_level", S_IRUGO | S_IWUSR, libipw_proc,
+ &debug_level_proc_fops);
+ if (!e) {
+ remove_proc_entry(DRV_PROCNAME, init_net.proc_net);
+ libipw_proc = NULL;
+ return -EIO;
+ }
+#endif /* CONFIG_LIBIPW_DEBUG */
+
+ printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
+ printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
+
+ return 0;
+}
+
+static void __exit libipw_exit(void)
+{
+#ifdef CONFIG_LIBIPW_DEBUG
+ if (libipw_proc) {
+ remove_proc_entry("debug_level", libipw_proc);
+ remove_proc_entry(DRV_PROCNAME, init_net.proc_net);
+ libipw_proc = NULL;
+ }
+#endif /* CONFIG_LIBIPW_DEBUG */
+}
+
+#ifdef CONFIG_LIBIPW_DEBUG
+#include <linux/moduleparam.h>
+module_param(debug, int, 0444);
+MODULE_PARM_DESC(debug, "debug output mask");
+#endif /* CONFIG_LIBIPW_DEBUG */
+
+module_exit(libipw_exit);
+module_init(libipw_init);