diff options
Diffstat (limited to 'drivers/net/wireless/intel/ipw2x00/libipw_module.c')
| -rw-r--r-- | drivers/net/wireless/intel/ipw2x00/libipw_module.c | 321 |
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); |