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297 lines
7.6 KiB
297 lines
7.6 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/******************************************************************************* |
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Copyright(c) 2004-2005 Intel Corporation. All rights reserved. |
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Portions of this file are based on the WEP enablement code provided by the |
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Host AP project hostap-drivers v0.1.3 |
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Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen |
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<[email protected]> |
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Copyright (c) 2002-2003, Jouni Malinen <[email protected]> |
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Contact Information: |
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Intel Linux Wireless <[email protected]> |
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Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
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*******************************************************************************/ |
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#include <linux/compiler.h> |
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#include <linux/errno.h> |
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#include <linux/if_arp.h> |
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#include <linux/in6.h> |
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#include <linux/in.h> |
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#include <linux/ip.h> |
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/netdevice.h> |
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#include <linux/proc_fs.h> |
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#include <linux/skbuff.h> |
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#include <linux/slab.h> |
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#include <linux/tcp.h> |
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#include <linux/types.h> |
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#include <linux/wireless.h> |
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#include <linux/etherdevice.h> |
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#include <linux/uaccess.h> |
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#include <net/net_namespace.h> |
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#include <net/arp.h> |
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#include "libipw.h" |
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#define DRV_DESCRIPTION "802.11 data/management/control stack" |
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#define DRV_NAME "libipw" |
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#define DRV_PROCNAME "ieee80211" |
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#define DRV_VERSION LIBIPW_VERSION |
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#define DRV_COPYRIGHT "Copyright (C) 2004-2005 Intel Corporation <[email protected]>" |
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MODULE_VERSION(DRV_VERSION); |
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MODULE_DESCRIPTION(DRV_DESCRIPTION); |
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MODULE_AUTHOR(DRV_COPYRIGHT); |
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MODULE_LICENSE("GPL"); |
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static struct cfg80211_ops libipw_config_ops = { }; |
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static void *libipw_wiphy_privid = &libipw_wiphy_privid; |
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static int libipw_networks_allocate(struct libipw_device *ieee) |
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{ |
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int i, j; |
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for (i = 0; i < MAX_NETWORK_COUNT; i++) { |
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ieee->networks[i] = kzalloc(sizeof(struct libipw_network), |
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GFP_KERNEL); |
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if (!ieee->networks[i]) { |
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LIBIPW_ERROR("Out of memory allocating beacons\n"); |
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for (j = 0; j < i; j++) |
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kfree(ieee->networks[j]); |
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return -ENOMEM; |
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} |
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} |
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return 0; |
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} |
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static inline void libipw_networks_free(struct libipw_device *ieee) |
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{ |
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int i; |
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for (i = 0; i < MAX_NETWORK_COUNT; i++) |
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kfree(ieee->networks[i]); |
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} |
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void libipw_networks_age(struct libipw_device *ieee, |
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unsigned long age_secs) |
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{ |
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struct libipw_network *network = NULL; |
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unsigned long flags; |
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unsigned long age_jiffies = msecs_to_jiffies(age_secs * MSEC_PER_SEC); |
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spin_lock_irqsave(&ieee->lock, flags); |
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list_for_each_entry(network, &ieee->network_list, list) { |
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network->last_scanned -= age_jiffies; |
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} |
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spin_unlock_irqrestore(&ieee->lock, flags); |
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} |
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EXPORT_SYMBOL(libipw_networks_age); |
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static void libipw_networks_initialize(struct libipw_device *ieee) |
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{ |
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int i; |
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INIT_LIST_HEAD(&ieee->network_free_list); |
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INIT_LIST_HEAD(&ieee->network_list); |
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for (i = 0; i < MAX_NETWORK_COUNT; i++) |
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list_add_tail(&ieee->networks[i]->list, |
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&ieee->network_free_list); |
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} |
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struct net_device *alloc_libipw(int sizeof_priv, int monitor) |
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{ |
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struct libipw_device *ieee; |
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struct net_device *dev; |
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int err; |
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LIBIPW_DEBUG_INFO("Initializing...\n"); |
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dev = alloc_etherdev(sizeof(struct libipw_device) + sizeof_priv); |
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if (!dev) |
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goto failed; |
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ieee = netdev_priv(dev); |
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ieee->dev = dev; |
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if (!monitor) { |
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ieee->wdev.wiphy = wiphy_new(&libipw_config_ops, 0); |
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if (!ieee->wdev.wiphy) { |
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LIBIPW_ERROR("Unable to allocate wiphy.\n"); |
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goto failed_free_netdev; |
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} |
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ieee->dev->ieee80211_ptr = &ieee->wdev; |
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ieee->wdev.iftype = NL80211_IFTYPE_STATION; |
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/* Fill-out wiphy structure bits we know... Not enough info |
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here to call set_wiphy_dev or set MAC address or channel info |
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-- have to do that in ->ndo_init... */ |
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ieee->wdev.wiphy->privid = libipw_wiphy_privid; |
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ieee->wdev.wiphy->max_scan_ssids = 1; |
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ieee->wdev.wiphy->max_scan_ie_len = 0; |
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ieee->wdev.wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
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| BIT(NL80211_IFTYPE_ADHOC); |
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} |
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err = libipw_networks_allocate(ieee); |
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if (err) { |
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LIBIPW_ERROR("Unable to allocate beacon storage: %d\n", err); |
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goto failed_free_wiphy; |
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} |
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libipw_networks_initialize(ieee); |
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/* Default fragmentation threshold is maximum payload size */ |
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ieee->fts = DEFAULT_FTS; |
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ieee->rts = DEFAULT_FTS; |
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ieee->scan_age = DEFAULT_MAX_SCAN_AGE; |
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ieee->open_wep = 1; |
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/* Default to enabling full open WEP with host based encrypt/decrypt */ |
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ieee->host_encrypt = 1; |
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ieee->host_decrypt = 1; |
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ieee->host_mc_decrypt = 1; |
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/* Host fragmentation in Open mode. Default is enabled. |
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* Note: host fragmentation is always enabled if host encryption |
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* is enabled. For cards can do hardware encryption, they must do |
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* hardware fragmentation as well. So we don't need a variable |
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* like host_enc_frag. */ |
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ieee->host_open_frag = 1; |
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ieee->ieee802_1x = 1; /* Default to supporting 802.1x */ |
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spin_lock_init(&ieee->lock); |
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lib80211_crypt_info_init(&ieee->crypt_info, dev->name, &ieee->lock); |
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ieee->wpa_enabled = 0; |
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ieee->drop_unencrypted = 0; |
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ieee->privacy_invoked = 0; |
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return dev; |
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failed_free_wiphy: |
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if (!monitor) |
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wiphy_free(ieee->wdev.wiphy); |
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failed_free_netdev: |
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free_netdev(dev); |
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failed: |
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return NULL; |
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} |
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EXPORT_SYMBOL(alloc_libipw); |
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void free_libipw(struct net_device *dev, int monitor) |
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{ |
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struct libipw_device *ieee = netdev_priv(dev); |
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lib80211_crypt_info_free(&ieee->crypt_info); |
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libipw_networks_free(ieee); |
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/* free cfg80211 resources */ |
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if (!monitor) |
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wiphy_free(ieee->wdev.wiphy); |
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free_netdev(dev); |
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} |
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EXPORT_SYMBOL(free_libipw); |
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#ifdef CONFIG_LIBIPW_DEBUG |
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static int debug = 0; |
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u32 libipw_debug_level = 0; |
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EXPORT_SYMBOL_GPL(libipw_debug_level); |
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static struct proc_dir_entry *libipw_proc = NULL; |
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static int debug_level_proc_show(struct seq_file *m, void *v) |
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{ |
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seq_printf(m, "0x%08X\n", libipw_debug_level); |
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return 0; |
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} |
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static int debug_level_proc_open(struct inode *inode, struct file *file) |
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{ |
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return single_open(file, debug_level_proc_show, NULL); |
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} |
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static ssize_t debug_level_proc_write(struct file *file, |
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const char __user *buffer, size_t count, loff_t *pos) |
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{ |
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char buf[] = "0x00000000\n"; |
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size_t len = min(sizeof(buf) - 1, count); |
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unsigned long val; |
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if (copy_from_user(buf, buffer, len)) |
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return count; |
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buf[len] = 0; |
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if (sscanf(buf, "%li", &val) != 1) |
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printk(KERN_INFO DRV_NAME |
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": %s is not in hex or decimal form.\n", buf); |
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else |
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libipw_debug_level = val; |
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return strnlen(buf, len); |
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} |
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static const struct proc_ops debug_level_proc_ops = { |
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.proc_open = debug_level_proc_open, |
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.proc_read = seq_read, |
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.proc_lseek = seq_lseek, |
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.proc_release = single_release, |
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.proc_write = debug_level_proc_write, |
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}; |
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#endif /* CONFIG_LIBIPW_DEBUG */ |
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static int __init libipw_init(void) |
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{ |
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#ifdef CONFIG_LIBIPW_DEBUG |
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struct proc_dir_entry *e; |
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libipw_debug_level = debug; |
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libipw_proc = proc_mkdir(DRV_PROCNAME, init_net.proc_net); |
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if (libipw_proc == NULL) { |
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LIBIPW_ERROR("Unable to create " DRV_PROCNAME |
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" proc directory\n"); |
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return -EIO; |
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} |
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e = proc_create("debug_level", 0644, libipw_proc, |
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&debug_level_proc_ops); |
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if (!e) { |
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remove_proc_entry(DRV_PROCNAME, init_net.proc_net); |
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libipw_proc = NULL; |
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return -EIO; |
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} |
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#endif /* CONFIG_LIBIPW_DEBUG */ |
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printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n"); |
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printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n"); |
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return 0; |
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} |
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static void __exit libipw_exit(void) |
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{ |
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#ifdef CONFIG_LIBIPW_DEBUG |
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if (libipw_proc) { |
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remove_proc_entry("debug_level", libipw_proc); |
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remove_proc_entry(DRV_PROCNAME, init_net.proc_net); |
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libipw_proc = NULL; |
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} |
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#endif /* CONFIG_LIBIPW_DEBUG */ |
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} |
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#ifdef CONFIG_LIBIPW_DEBUG |
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#include <linux/moduleparam.h> |
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module_param(debug, int, 0444); |
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MODULE_PARM_DESC(debug, "debug output mask"); |
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#endif /* CONFIG_LIBIPW_DEBUG */ |
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module_exit(libipw_exit); |
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module_init(libipw_init);
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