Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

34 files changed, 16066 insertions, 0 deletions

diff --git a/net/bluetooth/Kconfig b/net/bluetooth/Kconfig
new file mode 100644
index 00000000000..6929490d095
--- /dev/null
+++ b/net/bluetooth/Kconfig
@@ -0,0 +1,63 @@
+#
+# Bluetooth subsystem configuration
+#
+
+menuconfig BT
+	depends on NET
+	tristate "Bluetooth subsystem support"
+	help
+	  Bluetooth is low-cost, low-power, short-range wireless technology.
+	  It was designed as a replacement for cables and other short-range
+	  technologies like IrDA.  Bluetooth operates in personal area range
+	  that typically extends up to 10 meters.  More information about
+	  Bluetooth can be found at <http://www.bluetooth.com/>.
+
+	  Linux Bluetooth subsystem consist of several layers:
+	     Bluetooth Core (HCI device and connection manager, scheduler)
+	     HCI Device drivers (Interface to the hardware)
+	     SCO Module (SCO audio links)
+	     L2CAP Module (Logical Link Control and Adaptation Protocol)
+	     RFCOMM Module (RFCOMM Protocol)  
+	     BNEP Module (Bluetooth Network Encapsulation Protocol)
+	     CMTP Module (CAPI Message Transport Protocol)
+	     HIDP Module (Human Interface Device Protocol)
+
+	  Say Y here to compile Bluetooth support into the kernel or say M to
+	  compile it as module (bluetooth).
+
+	  To use Linux Bluetooth subsystem, you will need several user-space
+	  utilities like hciconfig and hcid.  These utilities and updates to
+	  Bluetooth kernel modules are provided in the BlueZ packages.
+	  For more information, see <http://www.bluez.org/>.
+
+config BT_L2CAP
+	tristate "L2CAP protocol support"
+	depends on BT
+	help
+	  L2CAP (Logical Link Control and Adaptation Protocol) provides
+	  connection oriented and connection-less data transport.  L2CAP
+	  support is required for most Bluetooth applications.
+
+	  Say Y here to compile L2CAP support into the kernel or say M to
+	  compile it as module (l2cap).
+
+config BT_SCO
+	tristate "SCO links support"
+	depends on BT
+	help
+	  SCO link provides voice transport over Bluetooth.  SCO support is
+	  required for voice applications like Headset and Audio.
+
+	  Say Y here to compile SCO support into the kernel or say M to
+	  compile it as module (sco).
+
+source "net/bluetooth/rfcomm/Kconfig"
+
+source "net/bluetooth/bnep/Kconfig"
+
+source "net/bluetooth/cmtp/Kconfig"
+
+source "net/bluetooth/hidp/Kconfig"
+
+source "drivers/bluetooth/Kconfig"
+
diff --git a/net/bluetooth/Makefile b/net/bluetooth/Makefile
new file mode 100644
index 00000000000..d1e433f7d67
--- /dev/null
+++ b/net/bluetooth/Makefile
@@ -0,0 +1,13 @@
+#
+# Makefile for the Linux Bluetooth subsystem.
+#
+
+obj-$(CONFIG_BT)	+= bluetooth.o
+obj-$(CONFIG_BT_L2CAP)	+= l2cap.o
+obj-$(CONFIG_BT_SCO)	+= sco.o
+obj-$(CONFIG_BT_RFCOMM)	+= rfcomm/
+obj-$(CONFIG_BT_BNEP)	+= bnep/
+obj-$(CONFIG_BT_CMTP)	+= cmtp/
+obj-$(CONFIG_BT_HIDP)	+= hidp/
+
+bluetooth-objs := af_bluetooth.o hci_core.o hci_conn.o hci_event.o hci_sock.o hci_sysfs.o lib.o
diff --git a/net/bluetooth/af_bluetooth.c b/net/bluetooth/af_bluetooth.c
new file mode 100644
index 00000000000..1650c6bf699
--- /dev/null
+++ b/net/bluetooth/af_bluetooth.c
@@ -0,0 +1,355 @@
+/* 
+   BlueZ - Bluetooth protocol stack for Linux
+   Copyright (C) 2000-2001 Qualcomm Incorporated
+
+   Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License version 2 as
+   published by the Free Software Foundation;
+
+   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+   OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
+   IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
+   CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES 
+   WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 
+   ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 
+   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+   ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, 
+   COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS 
+   SOFTWARE IS DISCLAIMED.
+*/
+
+/* Bluetooth address family and sockets. */
+
+#include <linux/config.h>
+#include <linux/module.h>
+
+#include <linux/types.h>
+#include <linux/list.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/major.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/skbuff.h>
+#include <linux/init.h>
+#include <linux/poll.h>
+#include <linux/proc_fs.h>
+#include <net/sock.h>
+
+#if defined(CONFIG_KMOD)
+#include <linux/kmod.h>
+#endif
+
+#include <net/bluetooth/bluetooth.h>
+
+#ifndef CONFIG_BT_SOCK_DEBUG
+#undef  BT_DBG
+#define BT_DBG(D...)
+#endif
+
+#define VERSION "2.7"
+
+struct proc_dir_entry *proc_bt;
+EXPORT_SYMBOL(proc_bt);
+
+/* Bluetooth sockets */
+#define BT_MAX_PROTO	8
+static struct net_proto_family *bt_proto[BT_MAX_PROTO];
+
+int bt_sock_register(int proto, struct net_proto_family *ops)
+{
+	if (proto < 0 || proto >= BT_MAX_PROTO)
+		return -EINVAL;
+
+	if (bt_proto[proto])
+		return -EEXIST;
+
+	bt_proto[proto] = ops;
+	return 0;
+}
+EXPORT_SYMBOL(bt_sock_register);
+
+int bt_sock_unregister(int proto)
+{
+	if (proto < 0 || proto >= BT_MAX_PROTO)
+		return -EINVAL;
+
+	if (!bt_proto[proto])
+		return -ENOENT;
+
+	bt_proto[proto] = NULL;
+	return 0;
+}
+EXPORT_SYMBOL(bt_sock_unregister);
+
+static int bt_sock_create(struct socket *sock, int proto)
+{
+	int err = 0;
+
+	if (proto < 0 || proto >= BT_MAX_PROTO)
+		return -EINVAL;
+
+#if defined(CONFIG_KMOD)
+	if (!bt_proto[proto]) {
+		request_module("bt-proto-%d", proto);
+	}
+#endif
+	err = -EPROTONOSUPPORT;
+	if (bt_proto[proto] && try_module_get(bt_proto[proto]->owner)) {
+		err = bt_proto[proto]->create(sock, proto);
+		module_put(bt_proto[proto]->owner);
+	}
+	return err; 
+}
+
+void bt_sock_link(struct bt_sock_list *l, struct sock *sk)
+{
+	write_lock_bh(&l->lock);
+	sk_add_node(sk, &l->head);
+	write_unlock_bh(&l->lock);
+}
+EXPORT_SYMBOL(bt_sock_link);
+
+void bt_sock_unlink(struct bt_sock_list *l, struct sock *sk)
+{
+	write_lock_bh(&l->lock);
+	sk_del_node_init(sk);
+	write_unlock_bh(&l->lock);
+}
+EXPORT_SYMBOL(bt_sock_unlink);
+
+void bt_accept_enqueue(struct sock *parent, struct sock *sk)
+{
+	BT_DBG("parent %p, sk %p", parent, sk);
+
+	sock_hold(sk);
+	list_add_tail(&bt_sk(sk)->accept_q, &bt_sk(parent)->accept_q);
+	bt_sk(sk)->parent = parent;
+	parent->sk_ack_backlog++;
+}
+EXPORT_SYMBOL(bt_accept_enqueue);
+
+void bt_accept_unlink(struct sock *sk)
+{
+	BT_DBG("sk %p state %d", sk, sk->sk_state);
+
+	list_del_init(&bt_sk(sk)->accept_q);
+	bt_sk(sk)->parent->sk_ack_backlog--;
+	bt_sk(sk)->parent = NULL;
+	sock_put(sk);
+}
+EXPORT_SYMBOL(bt_accept_unlink);
+
+struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock)
+{
+	struct list_head *p, *n;
+	struct sock *sk;
+
+	BT_DBG("parent %p", parent);
+
+	list_for_each_safe(p, n, &bt_sk(parent)->accept_q) {
+		sk = (struct sock *) list_entry(p, struct bt_sock, accept_q);
+
+		lock_sock(sk);
+
+		/* FIXME: Is this check still needed */
+		if (sk->sk_state == BT_CLOSED) {
+			release_sock(sk);
+			bt_accept_unlink(sk);
+			continue;
+		}
+
+		if (sk->sk_state == BT_CONNECTED || !newsock) {
+			bt_accept_unlink(sk);
+			if (newsock)
+				sock_graft(sk, newsock);
+			release_sock(sk);
+			return sk;
+		}
+
+		release_sock(sk);
+	}
+	return NULL;
+}
+EXPORT_SYMBOL(bt_accept_dequeue);
+
+int bt_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
+	struct msghdr *msg, size_t len, int flags)
+{
+	int noblock = flags & MSG_DONTWAIT;
+	struct sock *sk = sock->sk;
+	struct sk_buff *skb;
+	size_t copied;
+	int err;
+
+	BT_DBG("sock %p sk %p len %d", sock, sk, len);
+
+	if (flags & (MSG_OOB))
+		return -EOPNOTSUPP;
+
+	if (!(skb = skb_recv_datagram(sk, flags, noblock, &err))) {
+		if (sk->sk_shutdown & RCV_SHUTDOWN)
+			return 0;
+		return err;
+	}
+
+	msg->msg_namelen = 0;
+
+	copied = skb->len;
+	if (len < copied) {
+		msg->msg_flags |= MSG_TRUNC;
+		copied = len;
+	}
+
+	skb->h.raw = skb->data;
+	err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
+
+	skb_free_datagram(sk, skb);
+
+	return err ? : copied;
+}
+EXPORT_SYMBOL(bt_sock_recvmsg);
+
+static inline unsigned int bt_accept_poll(struct sock *parent)
+{
+	struct list_head *p, *n;
+	struct sock *sk;
+
+	list_for_each_safe(p, n, &bt_sk(parent)->accept_q) {
+		sk = (struct sock *) list_entry(p, struct bt_sock, accept_q);
+		if (sk->sk_state == BT_CONNECTED)
+			return POLLIN | POLLRDNORM;
+	}
+
+	return 0;
+}
+
+unsigned int bt_sock_poll(struct file * file, struct socket *sock, poll_table *wait)
+{
+	struct sock *sk = sock->sk;
+	unsigned int mask = 0;
+
+	BT_DBG("sock %p, sk %p", sock, sk);
+
+	poll_wait(file, sk->sk_sleep, wait);
+
+	if (sk->sk_state == BT_LISTEN)
+		return bt_accept_poll(sk);
+
+	if (sk->sk_err || !skb_queue_empty(&sk->sk_error_queue))
+		mask |= POLLERR;
+
+	if (sk->sk_shutdown == SHUTDOWN_MASK)
+		mask |= POLLHUP;
+
+	if (!skb_queue_empty(&sk->sk_receive_queue) || 
+			(sk->sk_shutdown & RCV_SHUTDOWN))
+		mask |= POLLIN | POLLRDNORM;
+
+	if (sk->sk_state == BT_CLOSED)
+		mask |= POLLHUP;
+
+	if (sk->sk_state == BT_CONNECT ||
+			sk->sk_state == BT_CONNECT2 ||
+			sk->sk_state == BT_CONFIG)
+		return mask;
+
+	if (sock_writeable(sk))
+		mask |= POLLOUT | POLLWRNORM | POLLWRBAND;
+	else
+		set_bit(SOCK_ASYNC_NOSPACE, &sk->sk_socket->flags);
+
+	return mask;
+}
+EXPORT_SYMBOL(bt_sock_poll);
+
+int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo)
+{
+	DECLARE_WAITQUEUE(wait, current);
+	int err = 0;
+
+	BT_DBG("sk %p", sk);
+
+	add_wait_queue(sk->sk_sleep, &wait);
+	while (sk->sk_state != state) {
+		set_current_state(TASK_INTERRUPTIBLE);
+
+		if (!timeo) {
+			err = -EAGAIN;
+			break;
+		}
+
+		if (signal_pending(current)) {
+			err = sock_intr_errno(timeo);
+			break;
+		}
+
+		release_sock(sk);
+		timeo = schedule_timeout(timeo);
+		lock_sock(sk);
+
+		if (sk->sk_err) {
+			err = sock_error(sk);
+			break;
+		}
+	}
+	set_current_state(TASK_RUNNING);
+	remove_wait_queue(sk->sk_sleep, &wait);
+	return err;
+}
+EXPORT_SYMBOL(bt_sock_wait_state);
+
+static struct net_proto_family bt_sock_family_ops = {
+	.owner	= THIS_MODULE,
+	.family	= PF_BLUETOOTH,
+	.create	= bt_sock_create,
+};
+
+extern int hci_sock_init(void);
+extern int hci_sock_cleanup(void);
+
+extern int bt_sysfs_init(void);
+extern int bt_sysfs_cleanup(void);
+
+static int __init bt_init(void)
+{
+	BT_INFO("Core ver %s", VERSION);
+
+	proc_bt = proc_mkdir("bluetooth", NULL);
+	if (proc_bt)
+		proc_bt->owner = THIS_MODULE;
+
+	sock_register(&bt_sock_family_ops);
+
+	BT_INFO("HCI device and connection manager initialized");
+
+	bt_sysfs_init();
+
+	hci_sock_init();
+
+	return 0;
+}
+
+static void __exit bt_exit(void)
+{
+	hci_sock_cleanup();
+
+	bt_sysfs_cleanup();
+
+	sock_unregister(PF_BLUETOOTH);
+
+	remove_proc_entry("bluetooth", NULL);
+}
+
+subsys_initcall(bt_init);
+module_exit(bt_exit);
+
+MODULE_AUTHOR("Maxim Krasnyansky <maxk@qualcomm.com>, Marcel Holtmann <marcel@holtmann.org>");
+MODULE_DESCRIPTION("Bluetooth Core ver " VERSION);
+MODULE_VERSION(VERSION);
+MODULE_LICENSE("GPL");
+MODULE_ALIAS_NETPROTO(PF_BLUETOOTH);
diff --git a/net/bluetooth/bnep/Kconfig b/net/bluetooth/bnep/Kconfig
new file mode 100644
index 00000000000..35158b036d5
--- /dev/null
+++ b/net/bluetooth/bnep/Kconfig
@@ -0,0 +1,24 @@
+config BT_BNEP
+	tristate "BNEP protocol support"
+	depends on BT && BT_L2CAP
+	select CRC32
+	help
+	  BNEP (Bluetooth Network Encapsulation Protocol) is Ethernet
+	  emulation layer on top of Bluetooth.  BNEP is required for
+	  Bluetooth PAN (Personal Area Network).
+
+	  Say Y here to compile BNEP support into the kernel or say M to
+	  compile it as module (bnep).
+
+config BT_BNEP_MC_FILTER
+	bool "Multicast filter support"
+	depends on BT_BNEP
+	help
+	  This option enables the multicast filter support for BNEP.
+
+config BT_BNEP_PROTO_FILTER
+	bool "Protocol filter support"
+	depends on BT_BNEP
+	help
+	  This option enables the protocol filter support for BNEP.
+
diff --git a/net/bluetooth/bnep/Makefile b/net/bluetooth/bnep/Makefile
new file mode 100644
index 00000000000..c7821e76ca5
--- /dev/null
+++ b/net/bluetooth/bnep/Makefile
@@ -0,0 +1,7 @@
+#
+# Makefile for the Linux Bluetooth BNEP layer.
+#
+
+obj-$(CONFIG_BT_BNEP) += bnep.o
+
+bnep-objs := core.o sock.o netdev.o
diff --git a/net/bluetooth/bnep/bnep.h b/net/bluetooth/bnep/bnep.h
new file mode 100644
index 00000000000..bbb1ed7097a
--- /dev/null
+++ b/net/bluetooth/bnep/bnep.h
@@ -0,0 +1,184 @@
+/*
+  BNEP protocol definition for Linux Bluetooth stack (BlueZ).
+  Copyright (C) 2002 Maxim Krasnyansky <maxk@qualcomm.com>
+	
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License, 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.
+
+  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
+*/
+
+/*
+ * $Id: bnep.h,v 1.5 2002/08/04 21:23:58 maxk Exp $
+ */
+
+#ifndef _BNEP_H
+#define _BNEP_H
+
+#include <linux/types.h>
+#include <linux/crc32.h>
+#include <net/bluetooth/bluetooth.h>
+
+// Limits
+#define BNEP_MAX_PROTO_FILTERS     5
+#define BNEP_MAX_MULTICAST_FILTERS 20
+
+// UUIDs
+#define BNEP_BASE_UUID 0x0000000000001000800000805F9B34FB
+#define BNEP_UUID16    0x02
+#define BNEP_UUID32    0x04
+#define BNEP_UUID128   0x16
+
+#define BNEP_SVC_PANU  0x1115
+#define BNEP_SVC_NAP   0x1116
+#define BNEP_SVC_GN    0x1117
+
+// Packet types
+#define BNEP_GENERAL               0x00
+#define BNEP_CONTROL               0x01
+#define BNEP_COMPRESSED            0x02
+#define BNEP_COMPRESSED_SRC_ONLY   0x03
+#define BNEP_COMPRESSED_DST_ONLY   0x04
+
+// Control types
+#define BNEP_CMD_NOT_UNDERSTOOD    0x00
+#define BNEP_SETUP_CONN_REQ        0x01
+#define BNEP_SETUP_CONN_RSP        0x02
+#define BNEP_FILTER_NET_TYPE_SET   0x03
+#define BNEP_FILTER_NET_TYPE_RSP   0x04
+#define BNEP_FILTER_MULTI_ADDR_SET 0x05
+#define BNEP_FILTER_MULTI_ADDR_RSP 0x06
+
+// Extension types
+#define BNEP_EXT_CONTROL           0x00
+
+// Response messages 
+#define BNEP_SUCCESS               0x00
+
+#define BNEP_CONN_INVALID_DST      0x01
+#define BNEP_CONN_INVALID_SRC      0x02
+#define BNEP_CONN_INVALID_SVC      0x03
+#define BNEP_CONN_NOT_ALLOWED      0x04
+
+#define BNEP_FILTER_UNSUPPORTED_REQ    0x01
+#define BNEP_FILTER_INVALID_RANGE      0x02
+#define BNEP_FILTER_INVALID_MCADDR     0x02
+#define BNEP_FILTER_LIMIT_REACHED      0x03
+#define BNEP_FILTER_DENIED_SECURITY    0x04
+
+// L2CAP settings
+#define BNEP_MTU         1691
+#define BNEP_PSM	 0x0f
+#define BNEP_FLUSH_TO    0xffff
+#define BNEP_CONNECT_TO  15
+#define BNEP_FILTER_TO   15
+
+// Headers 
+#define BNEP_TYPE_MASK	 0x7f
+#define BNEP_EXT_HEADER	 0x80
+
+struct bnep_setup_conn_req {
+	__u8  type;
+	__u8  ctrl;
+	__u8  uuid_size;
+	__u8  service[0];
+} __attribute__((packed));
+
+struct bnep_set_filter_req {
+	__u8  type;
+	__u8  ctrl;
+	__u16 len;
+	__u8  list[0];
+} __attribute__((packed));
+
+struct bnep_control_rsp {
+	__u8  type;
+	__u8  ctrl;
+	__u16 resp;
+} __attribute__((packed));
+
+struct bnep_ext_hdr {
+	__u8  type;
+	__u8  len;
+	__u8  data[0];
+} __attribute__((packed));
+
+/* BNEP ioctl defines */
+#define BNEPCONNADD	_IOW('B', 200, int)
+#define BNEPCONNDEL	_IOW('B', 201, int)
+#define BNEPGETCONNLIST	_IOR('B', 210, int)
+#define BNEPGETCONNINFO	_IOR('B', 211, int)
+
+struct bnep_connadd_req {
+	int   sock;       // Connected socket
+	__u32 flags;
+	__u16 role;
+	char  device[16]; // Name of the Ethernet device
+};
+
+struct bnep_conndel_req {
+	__u32 flags;
+	__u8  dst[ETH_ALEN];
+};
+
+struct bnep_conninfo {
+	__u32 flags;
+	__u16 role;
+	__u16 state;	
+	__u8  dst[ETH_ALEN];
+	char  device[16];
+};
+
+struct bnep_connlist_req {
+	__u32  cnum;
+	struct bnep_conninfo __user *ci;
+};
+
+struct bnep_proto_filter {
+	__u16 start;
+	__u16 end;
+};
+
+int bnep_add_connection(struct bnep_connadd_req *req, struct socket *sock);
+int bnep_del_connection(struct bnep_conndel_req *req);
+int bnep_get_connlist(struct bnep_connlist_req *req);
+int bnep_get_conninfo(struct bnep_conninfo *ci);
+
+// BNEP sessions
+struct bnep_session {
+	struct list_head list;
+	
+	unsigned int  role;
+        unsigned long state;
+        unsigned long flags;
+	atomic_t      killed;
+
+	struct ethhdr eh;
+	struct msghdr msg;
+
+	struct bnep_proto_filter proto_filter[BNEP_MAX_PROTO_FILTERS];
+	u64    mc_filter;
+	
+	struct socket    *sock;
+	struct net_device *dev;
+	struct net_device_stats stats;
+};
+
+void bnep_net_setup(struct net_device *dev);
+int bnep_sock_init(void);
+int bnep_sock_cleanup(void);
+
+static inline int bnep_mc_hash(__u8 *addr)
+{
+        return (crc32_be(~0, addr, ETH_ALEN) >> 26);
+}
+
+#endif
diff --git a/net/bluetooth/bnep/core.c b/net/bluetooth/bnep/core.c
new file mode 100644
index 00000000000..682bf20af52
--- /dev/null
+++ b/net/bluetooth/bnep/core.c
@@ -0,0 +1,713 @@
+/* 
+   BNEP implementation for Linux Bluetooth stack (BlueZ).
+   Copyright (C) 2001-2002 Inventel Systemes
+   Written 2001-2002 by
+	Clément Moreau <clement.moreau@inventel.fr>
+	David Libault  <david.libault@inventel.fr>
+
+   Copyright (C) 2002 Maxim Krasnyansky <maxk@qualcomm.com>
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License version 2 as
+   published by the Free Software Foundation;
+
+   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+   OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
+   IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
+   CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES 
+   WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 
+   ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 
+   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+   ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, 
+   COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS 
+   SOFTWARE IS DISCLAIMED.
+*/
+
+/*
+ * $Id: core.c,v 1.20 2002/08/04 21:23:58 maxk Exp $
+ */ 
+
+#include <linux/config.h>
+#include <linux/module.h>
+
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/signal.h>
+#include <linux/init.h>
+#include <linux/wait.h>
+#include <linux/errno.h>
+#include <linux/smp_lock.h>
+#include <linux/net.h>
+#include <net/sock.h>
+
+#include <linux/socket.h>
+#include <linux/file.h>
+
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+
+#include <asm/unaligned.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/l2cap.h>
+
+#include "bnep.h"
+
+#ifndef CONFIG_BT_BNEP_DEBUG
+#undef  BT_DBG
+#define BT_DBG(D...)
+#endif
+
+#define VERSION "1.2"
+
+static LIST_HEAD(bnep_session_list);
+static DECLARE_RWSEM(bnep_session_sem);
+
+static struct bnep_session *__bnep_get_session(u8 *dst)
+{
+	struct bnep_session *s;
+	struct list_head *p;
+
+	BT_DBG("");
+
+	list_for_each(p, &bnep_session_list) {
+		s = list_entry(p, struct bnep_session, list);	
+		if (!memcmp(dst, s->eh.h_source, ETH_ALEN))
+			return s;
+	}
+	return NULL;
+}
+
+static void __bnep_link_session(struct bnep_session *s)
+{
+	/* It's safe to call __module_get() here because sessions are added
+	   by the socket layer which has to hold the refference to this module.
+	 */
+	__module_get(THIS_MODULE);
+	list_add(&s->list, &bnep_session_list);	
+}
+
+static void __bnep_unlink_session(struct bnep_session *s)
+{
+	list_del(&s->list);
+	module_put(THIS_MODULE);
+}
+
+static int bnep_send(struct bnep_session *s, void *data, size_t len)
+{
+	struct socket *sock = s->sock;
+	struct kvec iv = { data, len };
+
+	return kernel_sendmsg(sock, &s->msg, &iv, 1, len);
+}
+
+static int bnep_send_rsp(struct bnep_session *s, u8 ctrl, u16 resp)
+{
+	struct bnep_control_rsp rsp;
+	rsp.type = BNEP_CONTROL;
+	rsp.ctrl = ctrl;
+	rsp.resp = htons(resp);
+	return bnep_send(s, &rsp, sizeof(rsp));
+}
+
+#ifdef CONFIG_BT_BNEP_PROTO_FILTER
+static inline void bnep_set_default_proto_filter(struct bnep_session *s)
+{
+	/* (IPv4, ARP)  */
+	s->proto_filter[0].start = htons(0x0800);
+	s->proto_filter[0].end   = htons(0x0806);
+	/* (RARP, AppleTalk) */
+	s->proto_filter[1].start = htons(0x8035);
+	s->proto_filter[1].end   = htons(0x80F3);
+	/* (IPX, IPv6) */
+	s->proto_filter[2].start = htons(0x8137);
+	s->proto_filter[2].end   = htons(0x86DD);
+}
+#endif
+
+static int bnep_ctrl_set_netfilter(struct bnep_session *s, u16 *data, int len)
+{
+	int n;
+
+	if (len < 2)
+		return -EILSEQ;
+
+	n = ntohs(get_unaligned(data));
+	data++; len -= 2;
+
+	if (len < n)
+		return -EILSEQ;
+
+	BT_DBG("filter len %d", n);
+
+#ifdef CONFIG_BT_BNEP_PROTO_FILTER
+	n /= 4;
+	if (n <= BNEP_MAX_PROTO_FILTERS) {
+		struct bnep_proto_filter *f = s->proto_filter;
+		int i;
+
+		for (i = 0; i < n; i++) {
+			f[i].start = get_unaligned(data++);
+			f[i].end   = get_unaligned(data++);
+
+			BT_DBG("proto filter start %d end %d",
+				f[i].start, f[i].end);
+		}
+
+		if (i < BNEP_MAX_PROTO_FILTERS)
+			memset(f + i, 0, sizeof(*f));
+
+		if (n == 0)
+			bnep_set_default_proto_filter(s);
+
+		bnep_send_rsp(s, BNEP_FILTER_NET_TYPE_RSP, BNEP_SUCCESS);
+	} else {
+		bnep_send_rsp(s, BNEP_FILTER_NET_TYPE_RSP, BNEP_FILTER_LIMIT_REACHED);
+	}
+#else
+	bnep_send_rsp(s, BNEP_FILTER_NET_TYPE_RSP, BNEP_FILTER_UNSUPPORTED_REQ);
+#endif
+	return 0;
+}
+
+static int bnep_ctrl_set_mcfilter(struct bnep_session *s, u8 *data, int len)
+{
+	int n;
+
+	if (len < 2)
+		return -EILSEQ;
+
+	n = ntohs(get_unaligned((u16 *) data)); 
+	data += 2; len -= 2;
+
+	if (len < n)
+		return -EILSEQ;
+
+	BT_DBG("filter len %d", n);
+
+#ifdef CONFIG_BT_BNEP_MC_FILTER
+	n /= (ETH_ALEN * 2);
+
+	if (n > 0) {
+		s->mc_filter = 0;
+
+		/* Always send broadcast */
+		set_bit(bnep_mc_hash(s->dev->broadcast), (ulong *) &s->mc_filter);
+
+		/* Add address ranges to the multicast hash */
+		for (; n > 0; n--) {
+			u8 a1[6], *a2;
+
+			memcpy(a1, data, ETH_ALEN); data += ETH_ALEN;
+			a2 = data; data += ETH_ALEN;
+	
+			BT_DBG("mc filter %s -> %s",
+				batostr((void *) a1), batostr((void *) a2));
+
+			#define INCA(a) { int i = 5; while (i >=0 && ++a[i--] == 0); }
+
+			/* Iterate from a1 to a2 */
+			set_bit(bnep_mc_hash(a1), (ulong *) &s->mc_filter);
+			while (memcmp(a1, a2, 6) < 0 && s->mc_filter != ~0LL) {
+				INCA(a1);
+				set_bit(bnep_mc_hash(a1), (ulong *) &s->mc_filter);
+			}
+		}
+	}
+
+	BT_DBG("mc filter hash 0x%llx", s->mc_filter);
+
+	bnep_send_rsp(s, BNEP_FILTER_MULTI_ADDR_RSP, BNEP_SUCCESS);
+#else
+	bnep_send_rsp(s, BNEP_FILTER_MULTI_ADDR_RSP, BNEP_FILTER_UNSUPPORTED_REQ);
+#endif
+	return 0;
+}
+
+static int bnep_rx_control(struct bnep_session *s, void *data, int len)
+{
+	u8  cmd = *(u8 *)data;
+	int err = 0;
+
+	data++; len--;
+
+	switch (cmd) {
+	case BNEP_CMD_NOT_UNDERSTOOD:
+	case BNEP_SETUP_CONN_REQ:
+	case BNEP_SETUP_CONN_RSP:
+	case BNEP_FILTER_NET_TYPE_RSP:
+	case BNEP_FILTER_MULTI_ADDR_RSP:
+		/* Ignore these for now */
+		break;