Initial import of modified Linux 2.6.28 tree

Original upstream URL:
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git | branch linux-2.6.28.y

1 files changed, 338 insertions, 0 deletions

diff --git a/net/ieee80211/ieee80211_module.c b/net/ieee80211/ieee80211_module.c
new file mode 100644
index 0000000..949772a
--- /dev/null
+++ b/net/ieee80211/ieee80211_module.c
@@ -0,0 +1,338 @@
+/*******************************************************************************
+
+  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:
+  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/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 <net/ieee80211.h>
+
+#define DRV_DESCRIPTION "802.11 data/management/control stack"
+#define DRV_NAME        "ieee80211"
+#define DRV_VERSION	IEEE80211_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 int ieee80211_networks_allocate(struct ieee80211_device *ieee)
+{
+	if (ieee->networks)
+		return 0;
+
+	ieee->networks =
+	    kzalloc(MAX_NETWORK_COUNT * sizeof(struct ieee80211_network),
+		    GFP_KERNEL);
+	if (!ieee->networks) {
+		printk(KERN_WARNING "%s: Out of memory allocating beacons\n",
+		       ieee->dev->name);
+		return -ENOMEM;
+	}
+
+	return 0;
+}
+
+void ieee80211_network_reset(struct ieee80211_network *network)
+{
+	if (!network)
+		return;
+
+	if (network->ibss_dfs) {
+		kfree(network->ibss_dfs);
+		network->ibss_dfs = NULL;
+	}
+}
+
+static inline void ieee80211_networks_free(struct ieee80211_device *ieee)
+{
+	int i;
+
+	if (!ieee->networks)
+		return;
+
+	for (i = 0; i < MAX_NETWORK_COUNT; i++)
+		if (ieee->networks[i].ibss_dfs)
+			kfree(ieee->networks[i].ibss_dfs);
+
+	kfree(ieee->networks);
+	ieee->networks = NULL;
+}
+
+static void ieee80211_networks_initialize(struct ieee80211_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);
+}
+
+static int ieee80211_change_mtu(struct net_device *dev, int new_mtu)
+{
+	if ((new_mtu < 68) || (new_mtu > IEEE80211_DATA_LEN))
+		return -EINVAL;
+	dev->mtu = new_mtu;
+	return 0;
+}
+
+static struct net_device_stats *ieee80211_generic_get_stats(
+	struct net_device *dev)
+{
+	struct ieee80211_device *ieee = netdev_priv(dev);
+	return &ieee->stats;
+}
+
+struct net_device *alloc_ieee80211(int sizeof_priv)
+{
+	struct ieee80211_device *ieee;
+	struct net_device *dev;
+	int err;
+
+	IEEE80211_DEBUG_INFO("Initializing...\n");
+
+	dev = alloc_etherdev(sizeof(struct ieee80211_device) + sizeof_priv);
+	if (!dev) {
+		IEEE80211_ERROR("Unable to allocate network device.\n");
+		goto failed;
+	}
+	ieee = netdev_priv(dev);
+	dev->hard_start_xmit = ieee80211_xmit;
+	dev->change_mtu = ieee80211_change_mtu;
+
+	/* Drivers are free to override this if the generic implementation
+	 * does not meet their needs. */
+	dev->get_stats = ieee80211_generic_get_stats;
+
+	ieee->dev = dev;
+
+	err = ieee80211_networks_allocate(ieee);
+	if (err) {
+		IEEE80211_ERROR("Unable to allocate beacon storage: %d\n", err);
+		goto failed_free_netdev;
+	}
+	ieee80211_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 fragementation 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 */
+
+	INIT_LIST_HEAD(&ieee->crypt_deinit_list);
+	setup_timer(&ieee->crypt_deinit_timer, ieee80211_crypt_deinit_handler,
+			(unsigned long)ieee);
+	ieee->crypt_quiesced = 0;
+
+	spin_lock_init(&ieee->lock);
+
+	ieee->wpa_enabled = 0;
+	ieee->drop_unencrypted = 0;
+	ieee->privacy_invoked = 0;
+
+	return dev;
+
+failed_free_netdev:
+	free_netdev(dev);
+failed:
+	return NULL;
+}
+
+void free_ieee80211(struct net_device *dev)
+{
+	struct ieee80211_device *ieee = netdev_priv(dev);
+
+	int i;
+
+	ieee80211_crypt_quiescing(ieee);
+	del_timer_sync(&ieee->crypt_deinit_timer);
+	ieee80211_crypt_deinit_entries(ieee, 1);
+
+	for (i = 0; i < WEP_KEYS; i++) {
+		struct ieee80211_crypt_data *crypt = ieee->crypt[i];
+		if (crypt) {
+			if (crypt->ops) {
+				crypt->ops->deinit(crypt->priv);
+				module_put(crypt->ops->owner);
+			}
+			kfree(crypt);
+			ieee->crypt[i] = NULL;
+		}
+	}
+
+	ieee80211_networks_free(ieee);
+	free_netdev(dev);
+}
+
+#ifdef CONFIG_IEEE80211_DEBUG
+
+static int debug = 0;
+u32 ieee80211_debug_level = 0;
+EXPORT_SYMBOL_GPL(ieee80211_debug_level);
+static struct proc_dir_entry *ieee80211_proc = NULL;
+
+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", ieee80211_debug_level);
+}
+
+static int store_debug_level(struct file *file, const char __user * buffer,
+			     unsigned long count, void *data)
+{
+	char buf[] = "0x00000000\n";
+	unsigned long len = min((unsigned long)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
+		ieee80211_debug_level = val;
+
+	return strnlen(buf, len);
+}
+#endif				/* CONFIG_IEEE80211_DEBUG */
+
+static int __init ieee80211_init(void)
+{
+#ifdef CONFIG_IEEE80211_DEBUG
+	struct proc_dir_entry *e;
+
+	ieee80211_debug_level = debug;
+	ieee80211_proc = proc_mkdir(DRV_NAME, init_net.proc_net);
+	if (ieee80211_proc == NULL) {
+		IEEE80211_ERROR("Unable to create " DRV_NAME
+				" proc directory\n");
+		return -EIO;
+	}
+	e = create_proc_entry("debug_level", S_IFREG | S_IRUGO | S_IWUSR,
+			      ieee80211_proc);
+	if (!e) {
+		remove_proc_entry(DRV_NAME, init_net.proc_net);
+		ieee80211_proc = NULL;
+		return -EIO;
+	}
+	e->read_proc = show_debug_level;
+	e->write_proc = store_debug_level;
+	e->data = NULL;
+#endif				/* CONFIG_IEEE80211_DEBUG */
+
+	printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
+	printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
+
+	return 0;
+}
+
+static void __exit ieee80211_exit(void)
+{
+#ifdef CONFIG_IEEE80211_DEBUG
+	if (ieee80211_proc) {
+		remove_proc_entry("debug_level", ieee80211_proc);
+		remove_proc_entry(DRV_NAME, init_net.proc_net);
+		ieee80211_proc = NULL;
+	}
+#endif				/* CONFIG_IEEE80211_DEBUG */
+}
+
+#ifdef CONFIG_IEEE80211_DEBUG
+#include <linux/moduleparam.h>
+module_param(debug, int, 0444);
+MODULE_PARM_DESC(debug, "debug output mask");
+#endif				/* CONFIG_IEEE80211_DEBUG */
+
+module_exit(ieee80211_exit);
+module_init(ieee80211_init);
+
+const char *escape_essid(const char *essid, u8 essid_len)
+{
+	static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
+	const char *s = essid;
+	char *d = escaped;
+
+	if (ieee80211_is_empty_essid(essid, essid_len)) {
+		memcpy(escaped, "<hidden>", sizeof("<hidden>"));
+		return escaped;
+	}
+
+	essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
+	while (essid_len--) {
+		if (*s == '\0') {
+			*d++ = '\\';
+			*d++ = '0';
+			s++;
+		} else {
+			*d++ = *s++;
+		}
+	}
+	*d = '\0';
+	return escaped;
+}
+
+EXPORT_SYMBOL(alloc_ieee80211);
+EXPORT_SYMBOL(free_ieee80211);
+EXPORT_SYMBOL(escape_essid);