/******************************************************************************* 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 Copyright (c) 2002-2003, Jouni Malinen 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 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 *******************************************************************************/ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #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 " 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); } 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", 0644, 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 module_param(debug, int, 0444); MODULE_PARM_DESC(debug, "debug output mask"); #endif /* CONFIG_LIBIPW_DEBUG */ module_exit(libipw_exit); module_init(libipw_init);