path: root/net/bluetooth/6lowpan.c

/*
   Copyright (c) 2013-2014 Intel Corp.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License version 2 and
   only version 2 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.
*/

#include <linux/if_arp.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/module.h>
#include <linux/debugfs.h>

#include <net/ipv6.h>
#include <net/ip6_route.h>
#include <net/addrconf.h>

#include <net/af_ieee802154.h> /* to get the address type */

#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
#include <net/bluetooth/l2cap.h>

#include <net/6lowpan.h> /* for the compression support */

#define VERSION "0.1"

static struct dentry *lowpan_enable_debugfs;
static struct dentry *lowpan_control_debugfs;

#define IFACE_NAME_TEMPLATE "bt%d"
#define EUI64_ADDR_LEN 8

struct skb_cb {
	struct in6_addr addr;
	struct in6_addr gw;
	struct l2cap_chan *chan;
	int status;
};
#define lowpan_cb(skb) ((struct skb_cb *)((skb)->cb))

/* The devices list contains those devices that we are acting
 * as a proxy. The BT 6LoWPAN device is a virtual device that
 * connects to the Bluetooth LE device. The real connection to
 * BT device is done via l2cap layer. There exists one
 * virtual device / one BT 6LoWPAN network (=hciX device).
 * The list contains struct lowpan_dev elements.
 */
static LIST_HEAD(bt_6lowpan_devices);
static DEFINE_SPINLOCK(devices_lock);

static bool enable_6lowpan;

/* We are listening incoming connections via this channel
 */
static struct l2cap_chan *listen_chan;

struct lowpan_peer {
	struct list_head list;
	struct rcu_head rcu;
	struct l2cap_chan *chan;

	/* peer addresses in various formats */</