Bluetooth: Rename l2cap.c to l2cap_core.c

In a preparation to the the L2CAP code split in many files.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>

1 files changed, 0 insertions, 4984 deletions

diff --git a/net/bluetooth/l2cap.c b/net/bluetooth/l2cap.c
deleted file mode 100644
index 28d2954f94a4..000000000000
--- a/net/bluetooth/l2cap.c
+++ /dev/null
@@ -1,4984 +0,0 @@
-/*
-   BlueZ - Bluetooth protocol stack for Linux
-   Copyright (C) 2000-2001 Qualcomm Incorporated
-   Copyright (C) 2009-2010 Gustavo F. Padovan <gustavo@padovan.org>
-   Copyright (C) 2010 Google Inc.
-
-   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 L2CAP core and sockets. */
-
-#include <linux/module.h>
-
-#include <linux/types.h>
-#include <linux/capability.h>
-#include <linux/errno.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/poll.h>
-#include <linux/fcntl.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/socket.h>
-#include <linux/skbuff.h>
-#include <linux/list.h>
-#include <linux/device.h>
-#include <linux/debugfs.h>
-#include <linux/seq_file.h>
-#include <linux/uaccess.h>
-#include <linux/crc16.h>
-#include <net/sock.h>
-
-#include <asm/system.h>
-#include <asm/unaligned.h>
-
-#include <net/bluetooth/bluetooth.h>
-#include <net/bluetooth/hci_core.h>
-#include <net/bluetooth/l2cap.h>
-
-#define VERSION "2.15"
-
-static int disable_ertm;
-
-static u32 l2cap_feat_mask = L2CAP_FEAT_FIXED_CHAN;
-static u8 l2cap_fixed_chan[8] = { 0x02, };
-
-static const struct proto_ops l2cap_sock_ops;
-
-static struct workqueue_struct *_busy_wq;
-
-static struct bt_sock_list l2cap_sk_list = {
-	.lock = __RW_LOCK_UNLOCKED(l2cap_sk_list.lock)
-};
-
-static void l2cap_busy_work(struct work_struct *work);
-
-static void __l2cap_sock_close(struct sock *sk, int reason);
-static void l2cap_sock_close(struct sock *sk);
-static void l2cap_sock_kill(struct sock *sk);
-
-static int l2cap_build_conf_req(struct sock *sk, void *data);
-static struct sk_buff *l2cap_build_cmd(struct l2cap_conn *conn,
-				u8 code, u8 ident, u16 dlen, void *data);
-
-static int l2cap_ertm_data_rcv(struct sock *sk, struct sk_buff *skb);
-
-/* ---- L2CAP timers ---- */
-static void l2cap_sock_set_timer(struct sock *sk, long timeout)
-{
-	BT_DBG("sk %p state %d timeout %ld", sk, sk->sk_state, timeout);
-	sk_reset_timer(sk, &sk->sk_timer, jiffies + timeout);
-}
-
-static void l2cap_sock_clear_timer(struct sock *sk)
-{
-	BT_DBG("sock %p state %d", sk, sk->sk_state);
-	sk_stop_timer(sk, &sk->sk_timer);
-}
-
-static void l2cap_sock_timeout(unsigned long arg)
-{
-	struct sock *sk = (struct sock *) arg;
-	int reason;
-
-	BT_DBG("sock %p state %d", sk, sk->sk_state);
-
-	bh_lock_sock(sk);
-
-	if (sock_owned_by_user(sk)) {
-		/* sk is owned by user. Try again later */
-		l2cap_sock_set_timer(sk, HZ / 5);
-		bh_unlock_sock(sk);
-		sock_put(sk);
-		return;
-	}
-
-	if (sk->sk_state == BT_CONNECTED || sk->sk_state == BT_CONFIG)
-		reason = ECONNREFUSED;
-	else if (sk->sk_state == BT_CONNECT &&
-				l2cap_pi(sk)->sec_level != BT_SECURITY_SDP)
-		reason = ECONNREFUSED;
-	else
-		reason = ETIMEDOUT;
-
-	__l2cap_sock_close(sk, reason);
-
-	bh_unlock_sock(sk);
-
-	l2cap_sock_kill(sk);
-	sock_put(sk);
-}
-
-/* ---- L2CAP channels ---- */
-static struct sock *__l2cap_get_chan_by_dcid(struct l2cap_chan_list *l, u16 cid)
-{
-	struct sock *s;
-	for (s = l->head; s; s = l2cap_pi(s)->next_c) {
-		if (l2cap_pi(s)->dcid == cid)
-			break;
-	}
-	return s;
-}
-
-static struct sock *__l2cap_get_chan_by_scid(struct l2cap_chan_list *l, u16 cid)
-{
-	struct sock *s;
-	for (s = l->head; s; s = l2cap_pi(s)->next_c) {
-		if (l2cap_pi(s)->scid == cid)
-			break;
-	}
-	return s;
-}
-
-/* Find channel with given SCID.
- * Returns locked socket */
-static inline struct sock *l2cap_get_chan_by_scid(struct l2cap_chan_list *l, u16 cid)
-{
-	struct sock *s;
-	read_lock(&l->lock);
-	s = __l2cap_get_chan_by_scid(l, cid);
-	if (s)
-		bh_lock_sock(s);
-	read_unlock(&l->lock);
-	return s;
-}
-
-static struct sock *__l2cap_get_chan_by_ident(struct l2cap_chan_list *l, u8 ident)
-{
-	struct sock *s;
-	for (s = l->head; s; s = l2cap_pi(s)->next_c) {
-		if (l2cap_pi(s)->ident == ident)
-			break;
-	}
-	return s;
-}
-
-static inline struct sock *l2cap_get_chan_by_ident(struct l2cap_chan_list *l, u8 ident)
-{
-	struct sock *s;
-	read_lock(&l->lock);
-	s = __l2cap_get_chan_by_ident(l, ident);
-	if (s)
-		bh_lock_sock(s);
-	read_unlock(&l->lock);
-	return s;
-}
-
-static u16 l2cap_alloc_cid(struct l2cap_chan_list *l)
-{
-	u16 cid = L2CAP_CID_DYN_START;
-
-	for (; cid < L2CAP_CID_DYN_END; cid++) {
-		if (!__l2cap_get_chan_by_scid(l, cid))
-			return cid;
-	}
-
-	return 0;
-}
-
-static inline void __l2cap_chan_link(struct l2cap_chan_list *l, struct sock *sk)
-{
-	sock_hold(sk);
-
-	if (l->head)
-		l2cap_pi(l->head)->prev_c = sk;
-
-	l2cap_pi(sk)->next_c = l->head;
-	l2cap_pi(sk)->prev_c = NULL;
-	l->head = sk;
-}
-
-static inline void l2cap_chan_unlink(struct l2cap_chan_list *l, struct sock *sk)
-{
-	struct sock *next = l2cap_pi(sk)->next_c, *prev = l2cap_pi(sk)->prev_c;
-
-	write_lock_bh(&l->lock);
-	if (sk == l->head)
-		l->head = next;
-
-	if (next)
-		l2cap_pi(next)->prev_c = prev;
-	if (prev)
-		l2cap_pi(prev)->next_c = next;
-	write_unlock_bh(&l->lock);
-
-	__sock_put(sk);
-}
-
-static void __l2cap_chan_add(struct l2cap_conn *conn, struct sock *sk, struct sock *parent)
-{
-	struct l2cap_chan_list *l = &conn->chan_list;
-
-	BT_DBG("conn %p, psm 0x%2.2x, dcid 0x%4.4x", conn,
-			l2cap_pi(sk)->psm, l2cap_pi(sk)->dcid);
-
-	conn->disc_reason = 0x13;
-
-	l2cap_pi(sk)->conn = conn;
-
-	if (sk->sk_type == SOCK_SEQPACKET || sk->sk_type == SOCK_STREAM) {
-		/* Alloc CID for connection-oriented socket */
-		l2cap_pi(sk)->scid = l2cap_alloc_cid(l);
-	} else if (sk->sk_type == SOCK_DGRAM) {
-		/* Connectionless socket */
-		l2cap_pi(sk)->scid = L2CAP_CID_CONN_LESS;
-		l2cap_pi(sk)->dcid = L2CAP_CID_CONN_LESS;
-		l2cap_pi(sk)->omtu = L2CAP_DEFAULT_MTU;
-	} else {
-		/* Raw socket can send/recv signalling messages only */
-		l2cap_pi(sk)->scid = L2CAP_CID_SIGNALING;
-		l2cap_pi(sk)->dcid = L2CAP_CID_SIGNALING;
-		l2cap_pi(sk)->omtu = L2CAP_DEFAULT_MTU;
-	}
-
-	__l2cap_chan_link(l, sk);
-
-	if (parent)
-		bt_accept_enqueue(parent, sk);
-}
-
-/* Delete channel.
- * Must be called on the locked socket. */
-static void l2cap_chan_del(struct sock *sk, int err)
-{
-	struct l2cap_conn *conn = l2cap_pi(sk)->conn;
-	struct sock *parent = bt_sk(sk)->parent;
-
-	l2cap_sock_clear_timer(sk);
-
-	BT_DBG("sk %p, conn %p, err %d", sk, conn, err);
-
-	if (conn) {
-		/* Unlink from channel list */
-		l2cap_chan_unlink(&conn->chan_list, sk);
-		l2cap_pi(sk)->conn = NULL;
-		hci_conn_put(conn->hcon);
-	}
-
-	sk->sk_state = BT_CLOSED;
-	sock_set_flag(sk, SOCK_ZAPPED);
-
-	if (err)
-		sk->sk_err = err;
-
-	if (parent) {
-		bt_accept_unlink(sk);
-		parent->sk_data_ready(parent, 0);
-	} else
-		sk->sk_state_change(sk);
-
-	skb_queue_purge(TX_QUEUE(sk));
-
-	if (l2cap_pi(sk)->mode == L2CAP_MODE_ERTM) {
-		struct srej_list *l, *tmp;
-
-		del_timer(&l2cap_pi(sk)->retrans_timer);
-		del_timer(&l2cap_pi(sk)->monitor_timer);
-		del_timer(&l2cap_pi(sk)->ack_timer);
-
-		skb_queue_purge(SREJ_QUEUE(sk));
-		skb_queue_purge(BUSY_QUEUE(sk));
-
-		list_for_each_entry_safe(l, tmp, SREJ_LIST(sk), list) {
-			list_del(&l->list);
-			kfree(l);
-		}
-	}
-}
-
-static inline u8 l2cap_get_auth_type(struct sock *sk)
-{
-	if (sk->sk_type == SOCK_RAW) {
-		switch (l2cap_pi(sk)->sec_level) {
-		case BT_SECURITY_HIGH:
-			return HCI_AT_DEDICATED_BONDING_MITM;
-		case BT_SECURITY_MEDIUM:
-			return HCI_AT_DEDICATED_BONDING;
-		default:
-			return HCI_AT_NO_BONDING;
-		}
-	} else if (l2cap_pi(sk)->psm == cpu_to_le16(0x0001)) {
-		if (l2cap_pi(sk)->sec_level == BT_SECURITY_LOW)
-			l2cap_pi(sk)->sec_level = BT_SECURITY_SDP;
-
-		if (l2cap_pi(sk)->sec_level == BT_SECURITY_HIGH)
-			return HCI_AT_NO_BONDING_MITM;
-		else
-			return HCI_AT_NO_BONDING;
-	} else {
-		switch (l2cap_pi(sk)->sec_level) {
-		case BT_SECURITY_HIGH:
-			return HCI_AT_GENERAL_BONDING_MITM;
-		case BT_SECURITY_MEDIUM:
-			return HCI_AT_GENERAL_BONDING;
-		default:
-			return HCI_AT_NO_BONDING;
-		}
-	}
-}
-
-/* Service level security */
-static inline int l2cap_check_security(struct sock *sk)
-{
-	struct l2cap_conn *conn = l2cap_pi(sk)->conn;
-	__u8 auth_type;
-
-	auth_type = l2cap_get_auth_type(sk);
-
-	return hci_conn_security(conn->hcon, l2cap_pi(sk)->sec_level,
-								auth_type);
-}
-
-static inline u8 l2cap_get_ident(struct l2cap_conn *conn)
-{
-	u8 id;
-
-	/* Get next available identificator.
-	 *    1 - 128 are used by kernel.
-	 *  129 - 199 are reserved.
-	 *  200 - 254 are used by utilities like l2ping, etc.
-	 */
-
-	spin_lock_bh(&conn->lock);
-
-	if (++conn->tx_ident > 128)
-		conn->tx_ident = 1;
-
-	id = conn->tx_ident;
-
-	spin_unlock_bh(&conn->lock);
-
-	return id;
-}
-
-static inline void l2cap_send_cmd(struct l2cap_conn *conn, u8 ident, u8 code, u16 len, void *data)
-{
-	struct sk_buff *skb = l2cap_build_cmd(conn, code, ident, len, data);
-	u8 flags;
-
-	BT_DBG("code 0x%2.2x", code);
-
-	if (!skb)
-		return;
-
-	if (lmp_no_flush_capable(conn->hcon->hdev))
-		flags = ACL_START_NO_FLUSH;
-	else
-		flags = ACL_START;
-
-	hci_send_acl(conn->hcon, skb, flags);
-}
-
-static inline void l2cap_send_sframe(struct l2cap_pinfo *pi, u16 control)
-{
-	struct sk_buff *skb;
-	struct l2cap_hdr *lh;
-	struct l2cap_conn *conn = pi->conn;
-	struct sock *sk = (struct sock *)pi;
-	int count, hlen = L2CAP_HDR_SIZE + 2;
-	u8 flags;
-
-	if (sk->sk_state != BT_CONNECTED)
-		return;
-
-	if (pi->fcs == L2CAP_FCS_CRC16)
-		hlen += 2;
-
-	BT_DBG("pi %p, control 0x%2.2x", pi, control);
-
-	count = min_t(unsigned int, conn->mtu, hlen);
-	control |= L2CAP_CTRL_FRAME_TYPE;
-
-	if (pi->conn_state & L2CAP_CONN_SEND_FBIT) {
-		control |= L2CAP_CTRL_FINAL;
-		pi->conn_state &= ~L2CAP_CONN_SEND_FBIT;
-	}
-
-	if (pi->conn_state & L2CAP_CONN_SEND_PBIT) {
-		control |= L2CAP_CTRL_POLL;
-		pi->conn_state &= ~L2CAP_CONN_SEND_PBIT;
-	}
-
-	skb = bt_skb_alloc(count, GFP_ATOMIC);
-	if (!skb)
-		return;
-
-	lh = (struct l2cap_hdr *) skb_put(skb, L2CAP_HDR_SIZE);
-	lh->len = cpu_to_le16(hlen - L2CAP_HDR_SIZE);
-	lh->cid = cpu_to_le16(pi->dcid);
-	put_unaligned_le16(control, skb_put(skb, 2));
-
-	if (pi->fcs == L2CAP_FCS_CRC16) {
-		u16 fcs = crc16(0, (u8 *)lh, count - 2);
-		put_unaligned_le16(fcs, skb_put(skb, 2));
-	}
-
-	if (lmp_no_flush_capable(conn->hcon->hdev))
-		flags = ACL_START_NO_FLUSH;
-	else
-		flags = ACL_START;
-
-	hci_send_acl(pi->conn->hcon, skb, flags);
-}
-
-static inline void l2cap_send_rr_or_rnr(struct l2cap_pinfo *pi, u16 control)
-{
-	if (pi->conn_state & L2CAP_CONN_LOCAL_BUSY) {
-		control |= L2CAP_SUPER_RCV_NOT_READY;
-		pi->conn_state |= L2CAP_CONN_RNR_SENT;
-	} else
-		control |= L2CAP_SUPER_RCV_READY;
-
-	control |= pi->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT;
-
-	l2cap_send_sframe(pi, control);
-}
-
-static inline int __l2cap_no_conn_pending(struct sock *sk)
-{
-	return !(l2cap_pi(sk)->conf_state & L2CAP_CONF_CONNECT_PEND);
-}
-
-static void l2cap_do_start(struct sock *sk)
-{
-	struct l2cap_conn *conn = l2cap_pi(sk)->conn;
-
-	if (conn->info_state & L2CAP_INFO_FEAT_MASK_REQ_SENT) {
-		if (!(conn->info_state & L2CAP_INFO_FEAT_MASK_REQ_DONE))
-			return;
-
-		if (l2cap_check_security(sk) && __l2cap_no_conn_pending(sk)) {
-			struct l2cap_conn_req req;
-			req.scid = cpu_to_le16(l2cap_pi(sk)->scid);
-			req.psm  = l2cap_pi(sk)->psm;
-
-			l2cap_pi(sk)->ident = l2cap_get_ident(conn);
-			l2cap_pi(sk)->conf_state |= L2CAP_CONF_CONNECT_PEND;
-
-			l2cap_send_cmd(conn, l2cap_pi(sk)->ident,
-					L2CAP_CONN_REQ, sizeof(req), &req);
-		}
-	} else {
-		struct l2cap_info_req req;
-		req.type = cpu_to_le16(L2CAP_IT_FEAT_MASK);
-
-		conn->info_state |= L2CAP_INFO_FEAT_MASK_REQ_SENT;
-		conn->info_ident = l2cap_get_ident(conn);
-
-		mod_timer(&conn->info_timer, jiffies +
-					msecs_to_jiffies(L2CAP_INFO_TIMEOUT));
-
-		l2cap_send_cmd(conn, conn->info_ident,
-					L2CAP_INFO_REQ, sizeof(req), &req);
-	}
-}
-
-static inline int l2cap_mode_supported(__u8 mode, __u32 feat_mask)
-{
-	u32 local_feat_mask = l2cap_feat_mask;
-	if (!disable_ertm)
-		local_feat_mask |= L2CAP_FEAT_ERTM | L2CAP_FEAT_STREAMING;
-
-	switch (mode) {
-	case L2CAP_MODE_ERTM:
-		return L2CAP_FEAT_ERTM & feat_mask & local_feat_mask;
-	case L2CAP_MODE_STREAMING:
-		return L2CAP_FEAT_STREAMING & feat_mask & local_feat_mask;
-	default:
-		return 0x00;
-	}
-}
-
-static void l2cap_send_disconn_req(struct l2cap_conn *conn, struct sock *sk, int err)
-{
-	struct l2cap_disconn_req req;
-
-	if (!conn)
-		return;
-
-	skb_queue_purge(TX_QUEUE(sk));
-
-	if (l2cap_pi(sk)->mode == L2CAP_MODE_ERTM) {
-		del_timer(&l2cap_pi(sk)->retrans_timer);
-		del_timer(&l2cap_pi(sk)->monitor_timer);
-		del_timer(&l2cap_pi(sk)->ack_timer);
-	}
-
-	req.dcid = cpu_to_le16(l2cap_pi(sk)->dcid);
-	req.scid = cpu_to_le16(l2cap_pi(sk)->scid);
-	l2cap_send_cmd(conn, l2cap_get_ident(conn),
-			L2CAP_DISCONN_REQ, sizeof(req), &req);
-
-	sk->sk_state = BT_DISCONN;
-	sk->sk_err = err;
-}
-
-/* ---- L2CAP connections ---- */
-static void l2cap_conn_start(struct l2cap_conn *conn)
-{
-	struct l2cap_chan_list *l = &conn->chan_list;
-	struct sock_del_list del, *tmp1, *tmp2;
-	struct sock *sk;
-
-	BT_DBG("conn %p", conn);
-
-	INIT_LIST_HEAD(&del.list);
-
-	read_lock(&l->lock);
-
-	for (sk = l->head; sk; sk = l2cap_pi(sk)->next_c) {
-		bh_lock_sock(sk);
-
-		if (sk->sk_type != SOCK_SEQPACKET &&
-				sk->sk_type != SOCK_STREAM) {
-			bh_unlock_sock(sk);
-			continue;
-		}
-
-		if (sk->sk_state == BT_CONNECT) {
-			struct l2cap_conn_req req;
-
-			if (!l2cap_check_security(sk) ||
-					!__l2cap_no_conn_pending(sk)) {
-				bh_unlock_sock(sk);
-				continue;
-			}
-
-			if (!l2cap_mode_supported(l2cap_pi(sk)->mode,
-					conn->feat_mask)
-					&& l2cap_pi(sk)->conf_state &
-					L2CAP_CONF_STATE2_DEVICE) {
-				tmp1 = kzalloc(sizeof(struct sock_del_list),
-						GFP_ATOMIC);
-				tmp1->sk = sk;
-				list_add_tail(&tmp1->list, &del.list);
-				bh_unlock_sock(sk);
-				continue;
-			}
-
-			req.scid = cpu_to_le16(l2cap_pi(sk)->scid);
-			req.psm  = l2cap_pi(sk)->psm;
-
-			l2cap_pi(sk)->ident = l2cap_get_ident(conn);
-			l2cap_pi(sk)->conf_state |= L2CAP_CONF_CONNECT_PEND;
-
-			l2cap_send_cmd(conn, l2cap_pi(sk)->ident,
-				L2CAP_CONN_REQ, sizeof(req), &req);
-
-		} else if (sk->sk_state == BT_CONNECT2) {
-			struct l2cap_conn_rsp rsp;
-			char buf[128];
-			rsp.scid = cpu_to_le16(l2cap_pi(sk)->dcid);
-			rsp.dcid = cpu_to_le16(l2cap_pi(sk)->scid);
-
-			if (l2cap_check_security(sk)) {
-				if (bt_sk(sk)->defer_setup) {
-					struct sock *parent = bt_sk(sk)->parent;
-					rsp.result = cpu_to_le16(L2CAP_CR_PEND);
-					rsp.status = cpu_to_le16(L2CAP_CS_AUTHOR_PEND);
-					parent->sk_data_ready(parent, 0);
-
-				} else {
-					sk->sk_state = BT_CONFIG;
-					rsp.result = cpu_to_le16(L2CAP_CR_SUCCESS);
-					rsp.status = cpu_to_le16(L2CAP_CS_NO_INFO);
-				}
-			} else {
-				rsp.result = cpu_to_le16(L2CAP_CR_PEND);
-				rsp.status = cpu_to_le16(L2CAP_CS_AUTHEN_PEND);
-			}
-
-			l2cap_send_cmd(conn, l2cap_pi(sk)->ident,
-					L2CAP_CONN_RSP, sizeof(rsp), &rsp);
-
-			if (l2cap_pi(sk)->conf_state & L2CAP_CONF_REQ_SENT ||
-					rsp.result != L2CAP_CR_SUCCESS) {
-				bh_unlock_sock(sk);
-				continue;
-			}
-
-			l2cap_pi(sk)->conf_state |= L2CAP_CONF_REQ_SENT;
-			l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
-						l2cap_build_conf_req(sk, buf), buf);
-			l2cap_pi(sk)->num_conf_req++;
-		}
-
-		bh_unlock_sock(sk);
-	}
-
-	read_unlock(&l->lock);
-
-	list_for_each_entry_safe(tmp1, tmp2, &del.list, list) {
-		bh_lock_sock(tmp1->sk);
-		__l2cap_sock_close(tmp1->sk, ECONNRESET);
-		bh_unlock_sock(tmp1->sk);
-		list_del(&tmp1->list);
-		kfree(tmp1);
-	}
-}
-
-static void l2cap_conn_ready(struct l2cap_conn *conn)
-{
-	struct l2cap_chan_list *l = &conn->chan_list;
-	struct sock *sk;
-
-	BT_DBG("conn %p", conn);
-
-	read_lock(&l->lock);
-
-	for (sk = l->head; sk; sk = l2cap_pi(sk)->next_c) {
-		bh_lock_sock(sk);
-
-		if (sk->sk_type != SOCK_SEQPACKET &&
-				sk->sk_type != SOCK_STREAM) {
-			l2cap_sock_clear_timer(sk);
-			sk->sk_state = BT_CONNECTED;
-			sk->sk_state_change(sk);
-		} else if (sk->sk_state == BT_CONNECT)
-			l2cap_do_start(sk);
-
-		bh_unlock_sock(sk);
-	}
-
-	read_unlock(&l->lock);
-}
-
-/* Notify sockets that we cannot guaranty reliability anymore */
-static void l2cap_conn_unreliable(struct l2cap_conn *conn, int err)
-{
-	struct l2cap_chan_list *l = &conn->chan_list;
-	struct sock *sk;
-
-	BT_DBG("conn %p", conn);
-
-	read_lock(&l->lock);
-
-	for (sk = l->head; sk; sk = l2cap_pi(sk)->next_c) {
-		if (l2cap_pi(sk)->force_reliable)
-			sk->sk_err = err;
-	}
-
-	read_unlock(&l->lock);
-}
-
-static void l2cap_info_timeout(unsigned long arg)
-{
-	struct l2cap_conn *conn = (void *) arg;
-
-	conn->info_state |= L2CAP_INFO_FEAT_MASK_REQ_DONE;
-	conn->info_ident = 0;
-
-	l2cap_conn_start(conn);
-}
-
-static struct l2cap_conn *l2cap_conn_add(struct hci_conn *hcon, u8 status)
-{
-	struct l2cap_conn *conn = hcon->l2cap_data;
-
-	if (conn || status)
-		return conn;
-
-	conn = kzalloc(sizeof(struct l2cap_conn), GFP_ATOMIC);
-	if (!conn)
-		return NULL;
-
-	hcon->l2cap_data = conn;
-	conn->hcon = hcon;
-
-	BT_DBG("hcon %p conn %p", hcon, conn);
-
-	conn->mtu = hcon->hdev->acl_mtu;
-	conn->src = &hcon->hdev->bdaddr;
-	conn->dst = &hcon->dst;
-
-	conn->feat_mask = 0;
-
-	spin_lock_init(&conn->lock);
-	rwlock_init(&conn->chan_list.lock);
-
-	setup_timer(&conn->info_timer, l2cap_info_timeout,
-						(unsigned long) conn);
-
-	conn->disc_reason = 0x13;
-
-	return conn;
-}
-
-static void l2cap_conn_del(struct hci_conn *hcon, int err)
-{
-	struct l2cap_conn *conn = hcon->l2cap_data;
-	struct sock *sk;
-
-	if (!conn)
-		return;
-
-	BT_DBG("hcon %p conn %p, err %d", hcon, conn, err);
-
-	kfree_skb(conn->rx_skb);
-
-	/* Kill channels */
-	while ((sk = conn->chan_list.head)) {
-		bh_lock_sock(sk);
-		l2cap_chan_del(sk, err);
-		bh_unlock_sock(sk);
-		l2cap_sock_kill(sk);
-	}
-
-	if (conn->info_state & L2CAP_INFO_FEAT_MASK_REQ_SENT)
-		del_timer_sync(&conn->info_timer);
-
-	hcon->l2cap_data = NULL;
-	kfree(conn);
-}
-
-static inline void l2cap_chan_add(struct l2cap_conn *conn, struct sock *sk, struct sock *parent)
-{
-	struct l2cap_chan_list *l = &conn->chan_list;
-	write_lock_bh(&l->lock);
-	__l2cap_chan_add(conn, sk, parent);
-	write_unlock_bh(&l->lock);
-}
-
-/* ---- Socket interface ---- */
-static struct sock *__l2cap_get_sock_by_addr(__le16 psm, bdaddr_t *src)
-{
-	struct sock *sk;
-	struct hlist_node *node;
-	sk_for_each(sk, node, &l2cap_sk_list.head)
-		if (l2cap_pi(sk)->sport == psm && !bacmp(&bt_sk(sk)->src, src))
-			goto found;
-	sk = NULL;
-found:
-	return sk;
-}
-
-/* Find socket with psm and source bdaddr.
- * Returns closest match.
- */
-static struct sock *l2cap_get_sock_by_psm(int state, __le16 psm, bdaddr_t *src)
-{
-	struct sock *sk = NULL, *sk1 = NULL;
-	struct hlist_node *node;
-
-	read_lock(&l2cap_sk_list.lock);
-
-	sk_for_each(sk, node, &l2cap_sk_list.head) {
-		if (state && sk->sk_state != state)
-			continue;
-
-		if (l2cap_pi(sk)->psm == psm) {
-			/* Exact match. */
-			if (!bacmp(&bt_sk(sk)->src, src))
-				break;
-
-			/* Closest match */
-			if (!bacmp(&bt_sk(sk)->src, BDADDR_ANY))
-				sk1 = sk;
-		}
-	}
-
-	read_unlock(&l2cap_sk_list.lock);
-
-	return node ? sk : sk1;
-}
-
-static void l2cap_sock_destruct(struct sock *sk)
-{
-	BT_DBG("sk %p", sk);
-
-	skb_queue_purge(&sk->sk_receive_queue);
-	skb_queue_purge(&sk->sk_write_queue);
-}
-
-static void l2cap_sock_cleanup_listen(struct sock *parent)
-{
-	struct sock *sk;
-
-	BT_DBG("parent %p", parent);
-
-	/* Close not yet accepted channels */
-	while ((sk = bt_accept_dequeue(parent, NULL)))
-		l2cap_sock_close(sk);
-
-	parent->sk_state = BT_CLOSED;
-	sock_set_flag(parent, SOCK_ZAPPED);
-}
-
-/* Kill socket (only if zapped and orphan)
- * Must be called on unlocked socket.
- */
-static void l2cap_sock_kill(struct sock *sk)
-{
-	if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket)
-		return;
-
-	BT_DBG("sk %p state %d", sk, sk->sk_state);
-
-	/* Kill poor orphan */
-	bt_sock_unlink(&l2cap_sk_list, sk);
-	sock_set_flag(sk, SOCK_DEAD);
-	sock_put(sk);
-}
-
-static void __l2cap_sock_close(struct sock *sk, int reason)
-{
-	BT_DBG("sk %p state %d socket %p", sk, sk->sk_state, sk->sk_socket);
-
-	switch (sk->sk_state) {
-	case BT_LISTEN:
-		l2cap_sock_cleanup_listen(sk);
-		break;
-
-	case BT_CONNECTED:
-	case BT_CONFIG:
-		if (sk->sk_type == SOCK_SEQPACKET ||
-				sk->sk_type == SOCK_STREAM) {
-			struct l2cap_conn *conn = l2cap_pi(sk)->conn;
-
-			l2cap_sock_set_timer(sk, sk->sk_sndtimeo);
-			l2cap_send_disconn_req(conn, sk, reason);
-		} else
-			l2cap_chan_del(sk, reason);
-		break;
-
-	case BT_CONNECT2:
-		if (sk->sk_type == SOCK_SEQPACKET ||
-				sk->sk_type == SOCK_STREAM) {
-			struct l2cap_conn *conn = l2cap_pi(sk)->conn;
-			struct l2cap_conn_rsp rsp;
-			__u16 result;
-
-			if (bt_sk(sk)->defer_setup)
-				result = L2CAP_CR_SEC_BLOCK;
-			else
-				result = L2CAP_CR_BAD_PSM;
-			sk->sk_state = BT_DISCONN;
-
-			rsp.scid   = cpu_to_le16(l2cap_pi(sk)->dcid);
-			rsp.dcid   = cpu_to_le16(l2cap_pi(sk)->scid);
-			rsp.result = cpu_to_le16(result);
-			rsp.status = cpu_to_le16(L2CAP_CS_NO_INFO);
-			l2cap_send_cmd(conn, l2cap_pi(sk)->ident,
-					L2CAP_CONN_RSP, sizeof(rsp), &rsp);
-		} else
-			l2cap_chan_del(sk, reason);
-		break;
-
-	case BT_CONNECT:
-	case BT_DISCONN:
-		l2cap_chan_del(sk, reason);
-		break;
-
-	default:
-		sock_set_flag(sk, SOCK_ZAPPED);
-		break;
-	}
-}
-
-/* Must be called on unlocked socket. */
-static void l2cap_sock_close(struct sock *sk)
-{
-	l2cap_sock_clear_timer(sk);
-	lock_sock(sk);
-	__l2cap_sock_close(sk, ECONNRESET);
-	release_sock(sk);
-	l2cap_sock_kill(sk);
-}
-
-static void l2cap_sock_init(struct sock *sk, struct sock *parent)
-{
-	struct l2cap_pinfo *pi = l2cap_pi(sk);
-
-	BT_DBG("sk %p", sk);
-
-	if (parent) {
-		sk->sk_type = parent->sk_type;
-		bt_sk(sk)->defer_setup = bt_sk(parent)->defer_setup;
-
-		pi->imtu = l2cap_pi(parent)->imtu;
-		pi->omtu = l2cap_pi(parent)->omtu;
-		pi->conf_state = l2cap_pi(parent)->conf_state;
-		pi->mode = l2cap_pi(parent)->mode;
-		pi->fcs  = l2cap_pi(parent)->fcs;
-		pi->max_tx = l2cap_pi(parent)->max_tx;
-		pi->tx_win = l2cap_pi(parent)->tx_win;
-		pi->sec_level = l2cap_pi(parent)->sec_level;
-		pi->role_switch = l2cap_pi(parent)->role_switch;
-		pi->force_reliable = l2cap_pi(parent)->force_reliable;
-		pi->flushable = l2cap_pi(parent)->flushable;
-	} else {
-		pi->imtu = L2CAP_DEFAULT_MTU;
-		pi->omtu = 0;
-		if (!disable_ertm && sk->sk_type == SOCK_STREAM) {
-			pi->mode = L2CAP_MODE_ERTM;
-			pi->conf_state |= L2CAP_CONF_STATE2_DEVICE;
-		} else {
-			pi->mode = L2CAP_MODE_BASIC;
-		}
-		pi->max_tx = L2CAP_DEFAULT_MAX_TX;
-		pi->fcs  = L2CAP_FCS_CRC16;
-		pi->tx_win = L2CAP_DEFAULT_TX_WINDOW;
-		pi->sec_level = BT_SECURITY_LOW;
-		pi->role_switch = 0;
-		pi->force_reliable = 0;
-		pi->flushable = BT_FLUSHABLE_OFF;
-	}
-
-	/* Default config options */
-	pi->conf_len = 0;
-	pi->flush_to = L2CAP_DEFAULT_FLUSH_TO;
-	skb_queue_head_init(TX_QUEUE(sk));
-	skb_queue_head_init(SREJ_QUEUE(sk));
-	skb_queue_head_init(BUSY_QUEUE(sk));
-	INIT_LIST_HEAD(SREJ_LIST(sk));
-}
-
-static struct proto l2cap_proto = {
-	.name		= "L2CAP",
-	.owner		= THIS_MODULE,
-	.obj_size	= sizeof(struct l2cap_pinfo)
-};
-
-static struct sock *l2cap_sock_alloc(struct net *net, struct socket *sock, int proto, gfp_t prio)
-{
-	struct sock *sk;
-
-	sk = sk_alloc(net, PF_BLUETOOTH, prio, &l2cap_proto);
-	if (!sk)
-		return NULL;
-
-	sock_init_data(sock, sk);
-	INIT_LIST_HEAD(&bt_sk(sk)->accept_q);
-
-	sk->sk_destruct = l2cap_sock_destruct;
-	sk->sk_sndtimeo = msecs_to_jiffies(L2CAP_CONN_TIMEOUT);
-
-	sock_reset_flag(sk, SOCK_ZAPPED);
-
-	sk->sk_protocol = proto;
-	sk->sk_state = BT_OPEN;
-
-	setup_timer(&sk->sk_timer, l2cap_sock_timeout, (unsigned long) sk);
-
-	bt_sock_link(&l2cap_sk_list, sk);
-	return sk;
-}
-
-static int l2cap_sock_create(struct net *net, struct socket *sock, int protocol,
-			     int kern)
-{
-	struct sock *sk;
-
-	BT_DBG("sock %p", sock);
-
-	sock->state = SS_UNCONNECTED;
-
-	if (sock->type != SOCK_SEQPACKET && sock->type != SOCK_STREAM &&
-			sock->type != SOCK_DGRAM && sock->type != SOCK_RAW)
-		return -ESOCKTNOSUPPORT;
-
-	if (sock->type == SOCK_RAW && !kern && !capable(CAP_NET_RAW))
-		return -EPERM;
-
-	sock->ops = &l2cap_sock_ops;
-
-	sk = l2cap_sock_alloc(net, sock, protocol, GFP_ATOMIC);
-	if (!sk)
-		return -ENOMEM;
-
-	l2cap_sock_init(sk, NULL);
-	return 0;
-}
-
-static int l2cap_sock_bind(struct socket *sock, struct sockaddr *addr, int alen)
-{
-	struct sock *sk = sock->sk;
-	struct sockaddr_l2 la;
-	int len, err = 0;
-
-	BT_DBG("sk %p", sk);
-
-	if (!addr || addr->sa_family != AF_BLUETOOTH)
-		return -EINVAL;
-
-	memset(&la, 0, sizeof(la));
-	len = min_t(unsigned int, sizeof(la), alen);
-	memcpy(&la, addr, len);
-
-	if (la.l2_cid)
-		return -EINVAL;
-
-	lock_sock(sk);
-
-	if (sk->sk_state != BT_OPEN) {
-		err = -EBADFD;
-		goto done;
-	}
-
-	if (la.l2_psm) {
-		__u16 psm = __le16_to_cpu(la.l2_psm);
-
-		/* PSM must be odd and lsb of upper byte must be 0 */
-		if ((psm & 0x0101) != 0x0001) {
-			err = -EINVAL;
-			goto done;
-		}
-
-		/* Restrict usage of well-known PSMs */
-		if (psm < 0x1001 && !capable(CAP_NET_BIND_SERVICE)) {
-			err = -EACCES;
-			goto done;
-		}
-	}
-
-	write_lock_bh(&l2cap_sk_list.lock);
-
-	if (la.l2_psm && __l2cap_get_sock_by_addr(la.l2_psm, &la.l2_bdaddr)) {
-		err = -EADDRINUSE;
-	} else {
-		/* Save source address */
-		bacpy(&bt_sk(sk)->src, &la.l2_bdaddr);
-		l2cap_pi(sk)->psm   = la.l2_psm;
-		l2cap_pi(sk)->sport = la.l2_psm;
-		sk->sk_state = BT_BOUND;
-
-		if (__le16_to_cpu(la.l2_psm) == 0x0001 ||
-					__le16_to_cpu(la.l2_psm) == 0x0003)
-			l2cap_pi(sk)->sec_level = BT_SECURITY_SDP;
-	}
-
-	write_unlock_bh(&l2cap_sk_list.lock);
-
-done:
-	release_sock(sk);
-	return err;
-}
-
-static int l2cap_do_connect(struct sock *sk)
-{
-	bdaddr_t *src = &bt_sk(sk)->src;
-	bdaddr_t *dst = &bt_sk(sk)->dst;
-	struct l2cap_conn *conn;
-	struct hci_conn *hcon;
-	struct hci_dev *hdev;
-	__u8 auth_type;
-	int err;
-
-	BT_DBG("%s -> %s psm 0x%2.2x", batostr(src), batostr(dst),
-							l2cap_pi(sk)->psm);
-
-	hdev = hci_get_route(dst, src);
-	if (!hdev)
-		return -EHOSTUNREACH;
-
-	hci_dev_lock_bh(hdev);
-
-	err = -ENOMEM;
-
-	auth_type = l2cap_get_auth_type(sk);
-
-	hcon = hci_connect(hdev, ACL_LINK, dst,
-					l2cap_pi(sk)->sec_level, auth_type);
-	if (!hcon)
-		goto done;
-
-	conn = l2cap_conn_add(hcon, 0);
-	if (!conn) {
-		hci_conn_put(hcon);
-		goto done;
-	}
-
-	err = 0;
-
-	/* Update source addr of the socket */
-	bacpy(src, conn->src);
-
-	l2cap_chan_add(conn, sk, NULL);
-
-	sk->sk_state = BT_CONNECT;
-	l2cap_sock_set_timer(sk, sk->sk_sndtimeo);
-
-	if (hcon->state == BT_CONNECTED) {
-		if (sk->sk_type != SOCK_SEQPACKET &&
-				sk->sk_type != SOCK_STREAM) {
-			l2cap_sock_clear_timer(sk);
-			if (l2cap_check_security(sk))
-				sk->sk_state = BT_CONNECTED;
-		} else
-			l2cap_do_start(sk);
-	}
-
-done:
-	hci_dev_unlock_bh(hdev);
-	hci_dev_put(hdev);
-	return err;
-}
-
-static int l2cap_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags)
-{
-	struct sock *sk = sock->sk;
-	struct sockaddr_l2 la;
-	int len, err = 0;
-
-	BT_DBG("sk %p", sk);
-
-	if (!addr || alen < sizeof(addr->sa_family) ||
-	    addr->sa_family != AF_BLUETOOTH)
-		return -EINVAL;
-
-	memset(&la, 0, sizeof(la));
-	len = min_t(unsigned int, sizeof(la), alen);
-	memcpy(&la, addr, len);
-
-	if (la.l2_cid)
-		return -EINVAL;
-
-	lock_sock(sk);
-
-	if ((sk->sk_type == SOCK_SEQPACKET || sk->sk_type == SOCK_STREAM)
-			&& !la.l2_psm) {
-		err = -EINVAL;
-		goto done;
-	}
-
-	switch (l2cap_pi(sk)->mode) {
-	case L2CAP_MODE_BASIC:
-		break;
-	case L2CAP_MODE_ERTM:
-	case L2CAP_MODE_STREAMING:
-		if (!disable_ertm)
-			break;
-		/* fall through */
-	default:
-		err = -ENOTSUPP;
-		goto done;
-	}
-
-	switch (sk->sk_state) {
-	case BT_CONNECT:
-	case BT_CONNECT2:
-	case BT_CONFIG:
-		/* Already connecting */
-		goto wait;
-
-	case BT_CONNECTED:
-		/* Already connected */
-		err = -EISCONN;
-		goto done;
-
-	case BT_OPEN:
-	case BT_BOUND:
-		/* Can connect */
-		break;
-
-	default:
-		err = -EBADFD;
-		goto done;
-	}
-
-	/* PSM must be odd and lsb of upper byte must be 0 */
-	if ((__le16_to_cpu(la.l2_psm) & 0x0101) != 0x0001 &&
-		sk->sk_type != SOCK_RAW) {
-		err = -EINVAL;
-		goto done;
-	}
-
-	/* Set destination address and psm */
-	bacpy(&bt_sk(sk)->dst, &la.l2_bdaddr);
-	l2cap_pi(sk)->psm = la.l2_psm;
-
-	err = l2cap_do_connect(sk);
-	if (err)
-		goto done;
-
-wait:
-	err = bt_sock_wait_state(sk, BT_CONNECTED,
-			sock_sndtimeo(sk, flags & O_NONBLOCK));
-done:
-	release_sock(sk);
-	return err;
-}
-
-static int l2cap_sock_listen(struct socket *sock, int backlog)
-{
-	struct sock *sk = sock->sk;
-	int err = 0;
-
-	BT_DBG("sk %p backlog %d", sk, backlog);
-
-	lock_sock(sk);
-
-	if ((sock->type != SOCK_SEQPACKET && sock->type != SOCK_STREAM)
-			|| sk->sk_state != BT_BOUND) {
-		err = -EBADFD;
-		goto done;
-	}
-
-	switch (l2cap_pi(sk)->mode) {
-	case L2CAP_MODE_BASIC:
-		break;
-	case L2CAP_MODE_ERTM:
-	case L2CAP_MODE_STREAMING:
-		if (!disable_ertm)
-			break;
-		/* fall through */
-	default:
-		err = -ENOTSUPP;
-		goto done;
-	}
-
-	if (!l2cap_pi(sk)->psm) {
-		bdaddr_t *src = &bt_sk(sk)->src;
-		u16 psm;
-
-		err = -EINVAL;
-
-		write_lock_bh(&l2cap_sk_list.lock);
-
-		for (psm = 0x1001; psm < 0x1100; psm += 2)
-			if (!__l2cap_get_sock_by_addr(cpu_to_le16(psm), src)) {
-				l2cap_pi(sk)->psm   = cpu_to_le16(psm);
-				l2cap_pi(sk)->sport = cpu_to_le16(psm);
-				err = 0;
-				break;
-			}
-
-		write_unlock_bh(&l2cap_sk_list.lock);
-
-		if (err < 0)
-			goto done;
-	}
-
-	sk->sk_max_ack_backlog = backlog;
-	sk->sk_ack_backlog = 0;
-	sk->sk_state = BT_LISTEN;
-
-done:
-	release_sock(sk);
-	return err;
-}
-
-static int l2cap_sock_accept(struct socket *sock, struct socket *newsock, int flags)
-{
-	DECLARE_WAITQUEUE(wait, current);
-	struct sock *sk = sock->sk, *nsk;
-	long timeo;
-	int err = 0;
-
-	lock_sock_nested(sk, SINGLE_DEPTH_NESTING);
-
-	if (sk->sk_state != BT_LISTEN) {
-		err = -EBADFD;
-		goto done;
-	}
-
-	timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK);
-
-	BT_DBG("sk %p timeo %ld", sk, timeo);
-
-	/* Wait for an incoming connection. (wake-one). */
-	add_wait_queue_exclusive(sk_sleep(sk), &wait);
-	while (!(nsk = bt_accept_dequeue(sk, newsock))) {
-		set_current_state(TASK_INTERRUPTIBLE);
-		if (!timeo) {
-			err = -EAGAIN;
-			break;
-		}
-
-		release_sock(sk);
-		timeo = schedule_timeout(timeo);
-		lock_sock_nested(sk, SINGLE_DEPTH_NESTING);
-
-		if (sk->sk_state != BT_LISTEN) {
-			err = -EBADFD;
-			break;
-		}
-
-		if (signal_pending(current)) {
-			err = sock_intr_errno(timeo);
-			break;
-		}
-	}
-	set_current_state(TASK_RUNNING);
-	remove_wait_queue(sk_sleep(sk), &wait);
-
-	if (err)
-		goto done;
-
-	newsock->state = SS_CONNECTED;
-
-	BT_DBG("new socket %p", nsk);
-
-done:
-	release_sock(sk);
-	return err;
-}
-
-static int l2cap_sock_getname(struct socket *sock, struct sockaddr *addr, int *len, int peer)
-{
-	struct sockaddr_l2 *la = (struct sockaddr_l2 *) addr;
-	struct sock *sk = sock->sk;
-
-	BT_DBG("sock %p, sk %p", sock, sk);
-
-	addr->sa_family = AF_BLUETOOTH;
-	*len = sizeof(struct sockaddr_l2);
-
-	if (peer) {
-		la->l2_psm = l2cap_pi(sk)->psm;
-		bacpy(&la->l2_bdaddr, &bt_sk(sk)->dst);
-		la->l2_cid = cpu_to_le16(l2cap_pi(sk)->dcid);
-	} else {
-		la->l2_psm = l2cap_pi(sk)->sport;
-		bacpy(&la->l2_bdaddr, &bt_sk(sk)->src);
-		la->l2_cid = cpu_to_le16(l2cap_pi(sk)->scid);
-	}
-
-	return 0;
-}
-
-static int __l2cap_wait_ack(struct sock *sk)
-{
-	DECLARE_WAITQUEUE(wait, current);
-	int err = 0;
-	int timeo = HZ/5;
-
-	add_wait_queue(sk_sleep(sk), &wait);
-	while ((l2cap_pi(sk)->unacked_frames > 0 && l2cap_pi(sk)->conn)) {
-		set_current_state(TASK_INTERRUPTIBLE);
-
-		if (!timeo)
-			timeo = HZ/5;
-
-		if (signal_pending(current)) {
-			err = sock_intr_errno(timeo);
-			break;
-		}
-
-		release_sock(sk);
-		timeo = schedule_timeout(timeo);
-		lock_sock(sk);
-
-		err = sock_error(sk);
-		if (err)
-			break;
-	}
-	set_current_state(TASK_RUNNING);
-	remove_wait_queue(sk_sleep(sk), &wait);
-	return err;
-}
-
-static void l2cap_monitor_timeout(unsigned long arg)
-{
-	struct sock *sk = (void *) arg;
-
-	BT_DBG("sk %p", sk);
-
-	bh_lock_sock(sk);
-	if (l2cap_pi(sk)->retry_count >= l2cap_pi(sk)->remote_max_tx) {
-		l2cap_send_disconn_req(l2cap_pi(sk)->conn, sk, ECONNABORTED);
-		bh_unlock_sock(sk);
-		return;
-	}
-
-	l2cap_pi(sk)->retry_count++;
-	__mod_monitor_timer();
-
-	l2cap_send_rr_or_rnr(l2cap_pi(sk), L2CAP_CTRL_POLL);
-	bh_unlock_sock(sk);
-}
-
-static void l2cap_retrans_timeout(unsigned long arg)
-{
-	struct sock *sk = (void *) arg;
-
-	BT_DBG("sk %p", sk);
-
-	bh_lock_sock(sk);
-	l2cap_pi(sk)->retry_count = 1;
-	__mod_monitor_timer();
-
-	l2cap_pi(sk)->conn_state |= L2CAP_CONN_WAIT_F;
-
-	l2cap_send_rr_or_rnr(l2cap_pi(sk), L2CAP_CTRL_POLL);
-	bh_unlock_sock(sk);
-}
-
-static void l2cap_drop_acked_frames(struct sock *sk)
-{
-	struct sk_buff *skb;
-
-	while ((skb = skb_peek(TX_QUEUE(sk))) &&
-			l2cap_pi(sk)->unacked_frames) {
-		if (bt_cb(skb)->tx_seq == l2cap_pi(sk)->expected_ack_seq)
-			break;
-
-		skb = skb_dequeue(TX_QUEUE(sk));
-		kfree_skb(skb);
-
-		l2cap_pi(sk)->unacked_frames--;
-	}
-
-	if (!l2cap_pi(sk)->unacked_frames)
-		del_timer(&l2cap_pi(sk)->retrans_timer);
-}
-
-static inline void l2cap_do_send(struct sock *sk, struct sk_buff *skb)
-{
-	struct l2cap_pinfo *pi = l2cap_pi(sk);
-	struct hci_conn *hcon = pi->conn->hcon;
-	u16 flags;
-
-	BT_DBG("sk %p, skb %p len %d", sk, skb, skb->len);
-
-	if (!pi->flushable && lmp_no_flush_capable(hcon->hdev))
-		flags = ACL_START_NO_FLUSH;
-	else
-		flags = ACL_START;
-
-	hci_send_acl(hcon, skb, flags);
-}
-
-static void l2cap_streaming_send(struct sock *sk)
-{
-	struct sk_buff *skb;
-	struct l2cap_pinfo *pi = l2cap_pi(sk);
-	u16 control, fcs;
-
-	while ((skb = skb_dequeue(TX_QUEUE(sk)))) {
-		control = get_unaligned_le16(skb->data + L2CAP_HDR_SIZE);
-		control |= pi->next_tx_seq << L2CAP_CTRL_TXSEQ_SHIFT;
-		put_unaligned_le16(control, skb->data + L2CAP_HDR_SIZE);
-
-		if (pi->fcs == L2CAP_FCS_CRC16) {
-			fcs = crc16(0, (u8 *)skb->data, skb->len - 2);
-			put_unaligned_le16(fcs, skb->data + skb->len - 2);
-		}
-
-		l2cap_do_send(sk, skb);
-
-		pi->next_tx_seq = (pi->next_tx_seq + 1) % 64;
-	}
-}
-
-static void l2cap_retransmit_one_frame(struct sock *sk, u8 tx_seq)
-{
-	struct l2cap_pinfo *pi = l2cap_pi(sk);
-	struct sk_buff *skb, *tx_skb;
-	u16 control, fcs;
-
-	skb = skb_peek(TX_QUEUE(sk));
-	if (!skb)
-		return;
-
-	do {
-		if (bt_cb(skb)->tx_seq == tx_seq)
-			break;
-
-		if (skb_queue_is_last(TX_QUEUE(sk), skb))
-			return;
-
-	} while ((skb = skb_queue_next(TX_QUEUE(sk), skb)));
-
-	if (pi->remote_max_tx &&
-			bt_cb(skb)->retries == pi->remote_max_tx) {
-		l2cap_send_disconn_req(pi->conn, sk, ECONNABORTED);
-		return;
-	}
-
-	tx_skb = skb_clone(skb, GFP_ATOMIC);
-	bt_cb(skb)->retries++;
-	control = get_unaligned_le16(tx_skb->data + L2CAP_HDR_SIZE);
-
-	if (pi->conn_state & L2CAP_CONN_SEND_FBIT) {
-		control |= L2CAP_CTRL_FINAL;
-		pi->conn_state &= ~L2CAP_CONN_SEND_FBIT;
-	}
-
-	control |= (pi->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT)
-			| (tx_seq << L2CAP_CTRL_TXSEQ_SHIFT);
-
-	put_unaligned_le16(control, tx_skb->data + L2CAP_HDR_SIZE);
-
-	if (pi->fcs == L2CAP_FCS_CRC16) {
-		fcs = crc16(0, (u8 *)tx_skb->data, tx_skb->len - 2);
-		put_unaligned_le16(fcs, tx_skb->data + tx_skb->len - 2);
-	}
-
-	l2cap_do_send(sk, tx_skb);
-}
-
-static int l2cap_ertm_send(struct sock *sk)
-{
-	struct sk_buff *skb, *tx_skb;
-	struct l2cap_pinfo *pi = l2cap_pi(sk);
-	u16 control, fcs;
-	int nsent = 0;
-
-	if (sk->sk_state != BT_CONNECTED)
-		return -ENOTCONN;
-
-	while ((skb = sk->sk_send_head) && (!l2cap_tx_window_full(sk))) {
-
-		if (pi->remote_max_tx &&
-				bt_cb(skb)->retries == pi->remote_max_tx) {
-			l2cap_send_disconn_req(pi->conn, sk, ECONNABORTED);
-			break;
-		}
-
-		tx_skb = skb_clone(skb, GFP_ATOMIC);
-
-		bt_cb(skb)->retries++;
-
-		control = get_unaligned_le16(tx_skb->data + L2CAP_HDR_SIZE);
-		control &= L2CAP_CTRL_SAR;
-
-		if (pi->conn_state & L2CAP_CONN_SEND_FBIT) {
-			control |= L2CAP_CTRL_FINAL;
-			pi->conn_state &= ~L2CAP_CONN_SEND_FBIT;
-		}
-		control |= (pi->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT)
-				| (pi->next_tx_seq << L2CAP_CTRL_TXSEQ_SHIFT);
-		put_unaligned_le16(control, tx_skb->data + L2CAP_HDR_SIZE);
-
-
-		if (pi->fcs == L2CAP_FCS_CRC16) {
-			fcs = crc16(0, (u8 *)skb->data, tx_skb->len - 2);
-			put_unaligned_le16(fcs, skb->data + tx_skb->len - 2);
-		}
-
-		l2cap_do_send(sk, tx_skb);
-
-		__mod_retrans_timer();
-
-		bt_cb(skb)->tx_seq = pi->next_tx_seq;
-		pi->next_tx_seq = (pi->next_tx_seq + 1) % 64;
-
-		pi->unacked_frames++;
-		pi->frames_sent++;
-
-		if (skb_queue_is_last(TX_QUEUE(sk), skb))
-			sk->sk_send_head = NULL;
-		else
-			sk->sk_send_head = skb_queue_next(TX_QUEUE(sk), skb);
-
-		nsent++;
-	}
-
-	return nsent;
-}
-
-static int l2cap_retransmit_frames(struct sock *sk)
-{
-	struct l2cap_pinfo *pi = l2cap_pi(sk);
-	int ret;
-
-	if (!skb_queue_empty(TX_QUEUE(sk)))
-		sk->sk_send_head = TX_QUEUE(sk)->next;
-
-	pi->next_tx_seq = pi->expected_ack_seq;
-	ret = l2cap_ertm_send(sk);
-	return ret;
-}
-
-static void l2cap_send_ack(struct l2cap_pinfo *pi)
-{
-	struct sock *sk = (struct sock *)pi;
-	u16 control = 0;
-
-	control |= pi->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT;
-
-	if (pi->conn_state & L2CAP_CONN_LOCAL_BUSY) {
-		control |= L2CAP_SUPER_RCV_NOT_READY;
-		pi->conn_state |= L2CAP_CONN_RNR_SENT;
-		l2cap_send_sframe(pi, control);
-		return;
-	}
-
-	if (l2cap_ertm_send(sk) > 0)
-		return;
-
-	control |= L2CAP_SUPER_RCV_READY;
-	l2cap_send_sframe(pi, control);
-}
-
-static void l2cap_send_srejtail(struct sock *sk)
-{
-	struct srej_list *tail;
-	u16 control;
-
-	control = L2CAP_SUPER_SELECT_REJECT;
-	control |= L2CAP_CTRL_FINAL;
-
-	tail = list_entry(SREJ_LIST(sk)->prev, struct srej_list, list);
-	control |= tail->tx_seq << L2CAP_CTRL_REQSEQ_SHIFT;
-
-	l2cap_send_sframe(l2cap_pi(sk), control);
-}
-
-static inline int l2cap_skbuff_fromiovec(struct sock *sk, struct msghdr *msg, int len, int count, struct sk_buff *skb)
-{
-	struct l2cap_conn *conn = l2cap_pi(sk)->conn;
-	struct sk_buff **frag;
-	int err, sent = 0;
-
-	if (memcpy_fromiovec(skb_put(skb, count), msg->msg_iov, count))
-		return -EFAULT;
-
-	sent += count;
-	len  -= count;
-
-	/* Continuation fragments (no L2CAP header) */
-	frag = &skb_shinfo(skb)->frag_list;
-	while (len) {
-		count = min_t(unsigned int, conn->mtu, len);
-
-		*frag = bt_skb_send_alloc(sk, count, msg->msg_flags & MSG_DONTWAIT, &err);
-		if (!*frag)
-			return err;
-		if (memcpy_fromiovec(skb_put(*frag, count), msg->msg_iov, count))
-			return -EFAULT;
-
-		sent += count;
-		len  -= count;
-
-		frag = &(*frag)->next;
-	}
-
-	return sent;
-}
-
-static struct sk_buff *l2cap_create_connless_pdu(struct sock *sk, struct msghdr *msg, size_t len)
-{
-	struct l2cap_conn *conn = l2cap_pi(sk)->conn;
-	struct sk_buff *skb;
-	int err, count, hlen = L2CAP_HDR_SIZE + 2;
-	struct l2cap_hdr *lh;
-
-	BT_DBG("sk %p len %d", sk, (int)len);
-
-	count = min_t(unsigned int, (conn->mtu - hlen), len);
-	skb = bt_skb_send_alloc(sk, count + hlen,
-			msg->msg_flags & MSG_DONTWAIT, &err);
-	if (!skb)
-		return ERR_PTR(err);
-
-	/* Create L2CAP header */
-	lh = (struct l2cap_hdr *) skb_put(skb, L2CAP_HDR_SIZE);
-	lh->cid = cpu_to_le16(l2cap_pi(sk)->dcid);
-	lh->len = cpu_to_le16(len + (hlen - L2CAP_HDR_SIZE));
-	put_unaligned_le16(l2cap_pi(sk)->psm, skb_put(skb, 2));
-
-	err = l2cap_skbuff_fromiovec(sk, msg, len, count, skb);
-	if (unlikely(err < 0)) {
-		kfree_skb(skb);
-		return ERR_PTR(err);
-	}
-	return skb;
-}
-
-static struct sk_buff *l2cap_create_basic_pdu(struct sock *sk, struct msghdr *msg, size_t len)
-{
-	struct l2cap_conn *conn = l2cap_pi(sk)->conn;
-	struct sk_buff *skb;
-	int err, count, hlen = L2CAP_HDR_SIZE;
-	struct l2cap_hdr *lh;
-
-	BT_DBG("sk %p len %d", sk, (int)len);
-
-	count = min_t(unsigned int, (conn->mtu - hlen), len);
-	skb = bt_skb_send_alloc(sk, count + hlen,
-			msg->msg_flags & MSG_DONTWAIT, &err);
-	if (!skb)
-		return ERR_PTR(err);
-
-	/* Create L2CAP header */
-	lh = (struct l2cap_hdr *) skb_put(skb, L2CAP_HDR_SIZE);
-	lh->cid = cpu_to_le16(l2cap_pi(sk)->dcid);
-	lh->len = cpu_to_le16(len + (hlen - L2CAP_HDR_SIZE));
-
-	err = l2cap_skbuff_fromiovec(sk, msg, len, count, skb);
-	if (unlikely(err < 0)) {
-		kfree_skb(skb);
-		return ERR_PTR(err);
-	}
-	return skb;
-}
-
-static struct sk_buff *l2cap_create_iframe_pdu(struct sock *sk, struct msghdr *msg, size_t len, u16 control, u16 sdulen)
-{
-	struct l2cap_conn *conn = l2cap_pi(sk)->conn;
-	struct sk_buff *skb;
-	int err, count, hlen = L2CAP_HDR_SIZE + 2;
-	struct l2cap_hdr *lh;
-
-	BT_DBG("sk %p len %d", sk, (int)len);
-
-	if (!conn)
-		return ERR_PTR(-ENOTCONN);
-
-	if (sdulen)
-		hlen += 2;
-
-	if (l2cap_pi(sk)->fcs == L2CAP_FCS_CRC16)
-		hlen += 2;
-
-	count = min_t(unsigned int, (conn->mtu - hlen), len);
-	skb = bt_skb_send_alloc(sk, count + hlen,
-			msg->msg_flags & MSG_DONTWAIT, &err);
-	if (!skb)
-		return ERR_PTR(err);
-
-	/* Create L2CAP header */
-	lh = (struct l2cap_hdr *) skb_put(skb, L2CAP_HDR_SIZE);
-	lh->cid = cpu_to_le16(l2cap_pi(sk)->dcid);
-	lh->len = cpu_to_le16(len + (hlen - L2CAP_HDR_SIZE));
-	put_unaligned_le16(control, skb_put(skb, 2));
-	if (sdulen)
-		put_unaligned_le16(sdulen, skb_put(skb, 2));
-
-	err = l2cap_skbuff_fromiovec(sk, msg, len, count, skb);
-	if (unlikely(err < 0)) {
-		kfree_skb(skb);
-		return ERR_PTR(err);
-	}
-
-	if (l2cap_pi(sk)->fcs == L2CAP_FCS_CRC16)
-		put_unaligned_le16(0, skb_put(skb, 2));
-
-	bt_cb(skb)->retries = 0;
-	return skb;
-}
-
-static inline int l2cap_sar_segment_sdu(struct sock *sk, struct msghdr *msg, size_t len)
-{
-	struct l2cap_pinfo *pi = l2cap_pi(sk);
-	struct sk_buff *skb;
-	struct sk_buff_head sar_queue;
-	u16 control;
-	size_t size = 0;
-
-	skb_queue_head_init(&sar_queue);
-	control = L2CAP_SDU_START;
-	skb = l2cap_create_iframe_pdu(sk, msg, pi->remote_mps, control, len);
-	if (IS_ERR(skb))
-		return PTR_ERR(skb);
-
-	__skb_queue_tail(&sar_queue, skb);
-	len -= pi->remote_mps;
-	size += pi->remote_mps;
-
-	while (len > 0) {
-		size_t buflen;
-
-		if (len > pi->remote_mps) {
-			control = L2CAP_SDU_CONTINUE;
-			buflen = pi->remote_mps;
-		} else {
-			control = L2CAP_SDU_END;
-			buflen = len;
-		}
-
-		skb = l2cap_create_iframe_pdu(sk, msg, buflen, control, 0);
-		if (IS_ERR(skb)) {
-			skb_queue_purge(&sar_queue);
-			return PTR_ERR(skb);
-		}
-
-		__skb_queue_tail(&sar_queue, skb);
-		len -= buflen;
-		size += buflen;
-	}
-	skb_queue_splice_tail(&sar_queue, TX_QUEUE(sk));
-	if (sk->sk_send_head == NULL)
-		sk->sk_send_head = sar_queue.next;
-
-	return size;
-}
-
-static int l2cap_sock_sendmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t len)
-{
-	struct sock *sk = sock->sk;
-	struct l2cap_pinfo *pi = l2cap_pi(sk);
-	struct sk_buff *skb;
-	u16 control;
-	int err;
-
-	BT_DBG("sock %p, sk %p", sock, sk);
-
-	err = sock_error(sk);
-	if (err)
-		return err;
-
-	if (msg->msg_flags & MSG_OOB)
-		return -EOPNOTSUPP;
-
-	lock_sock(sk);
-
-	if (sk->sk_state != BT_CONNECTED) {
-		err = -ENOTCONN;
-		goto done;
-	}
-
-	/* Connectionless channel */
-	if (sk->sk_type == SOCK_DGRAM) {
-		skb = l2cap_create_connless_pdu(sk, msg, len);
-		if (IS_ERR(skb)) {
-			err = PTR_ERR(skb);
-		} else {
-			l2cap_do_send(sk, skb);
-			err = len;
-		}
-		goto done;
-	}
-
-	switch (pi->mode) {
-	case L2CAP_MODE_BASIC:
-		/* Check outgoing MTU */
-		if (len > pi->omtu) {
-			err = -EMSGSIZE;
-			goto done;
-		}
-
-		/* Create a basic PDU */
-		skb = l2cap_create_basic_pdu(sk, msg, len);
-		if (IS_ERR(skb)) {
-			err = PTR_ERR(skb);
-			goto done;
-		}
-
-		l2cap_do_send(sk, skb);
-		err = len;
-		break;
-
-	case L2CAP_MODE_ERTM:
-	case L2CAP_MODE_STREAMING:
-		/* Entire SDU fits into one PDU */
-		if (len <= pi->remote_mps) {
-			control = L2CAP_SDU_UNSEGMENTED;
-			skb = l2cap_create_iframe_pdu(sk, msg, len, control, 0);
-			if (IS_ERR(skb)) {
-				err = PTR_ERR(skb);
-				goto done;
-			}
-			__skb_queue_tail(TX_QUEUE(sk), skb);
-
-			if (sk->sk_send_head == NULL)
-				sk->sk_send_head = skb;
-
-		} else {
-		/* Segment SDU into multiples PDUs */
-			err = l2cap_sar_segment_sdu(sk, msg, len);
-			if (err < 0)
-				goto done;
-		}
-
-		if (pi->mode == L2CAP_MODE_STREAMING) {
-			l2cap_streaming_send(sk);
-		} else {
-			if ((pi->conn_state & L2CAP_CONN_REMOTE_BUSY) &&
-					(pi->conn_state & L2CAP_CONN_WAIT_F)) {
-				err = len;
-				break;
-			}
-			err = l2cap_ertm_send(sk);
-		}
-
-		if (err >= 0)
-			err = len;
-		break;
-
-	default:
-		BT_DBG("bad state %1.1x", pi->mode);
-		err = -EBADFD;
-	}
-
-done:
-	release_sock(sk);
-	return err;
-}
-
-static int l2cap_sock_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t len, int flags)
-{
-	struct sock *sk = sock->sk;
-
-	lock_sock(sk);
-
-	if (sk->sk_state == BT_CONNECT2 && bt_sk(sk)->defer_setup) {
-		struct l2cap_conn_rsp rsp;
-		struct l2cap_conn *conn = l2cap_pi(sk)->conn;
-		u8 buf[128];
-
-		sk->sk_state = BT_CONFIG;
-
-		rsp.scid   = cpu_to_le16(l2cap_pi(sk)->dcid);
-		rsp.dcid   = cpu_to_le16(l2cap_pi(sk)->scid);
-		rsp.result = cpu_to_le16(L2CAP_CR_SUCCESS);
-		rsp.status = cpu_to_le16(L2CAP_CS_NO_INFO);
-		l2cap_send_cmd(l2cap_pi(sk)->conn, l2cap_pi(sk)->ident,
-					L2CAP_CONN_RSP, sizeof(rsp), &rsp);
-
-		if (l2cap_pi(sk)->conf_state & L2CAP_CONF_REQ_SENT) {
-			release_sock(sk);
-			return 0;
-		}
-
-		l2cap_pi(sk)->conf_state |= L2CAP_CONF_REQ_SENT;
-		l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
-				l2cap_build_conf_req(sk, buf), buf);
-		l2cap_pi(sk)->num_conf_req++;
-
-		release_sock(sk);
-		return 0;
-	}
-
-	release_sock(sk);
-
-	if (sock->type == SOCK_STREAM)
-		return bt_sock_stream_recvmsg(iocb, sock, msg, len, flags);
-
-	return bt_sock_recvmsg(iocb, sock, msg, len, flags);
-}
-
-static int l2cap_sock_setsockopt_old(struct socket *sock, int optname, char __user *optval, unsigned int optlen)
-{
-	struct sock *sk = sock->sk;
-	struct l2cap_options opts;
-	int len, err = 0;
-	u32 opt;
-
-	BT_DBG("sk %p", sk);
-
-	lock_sock(sk);
-
-	switch (optname) {
-	case L2CAP_OPTIONS:
-		if (sk->sk_state == BT_CONNECTED) {
-			err = -EINVAL;
-			break;
-		}
-
-		opts.imtu     = l2cap_pi(sk)->imtu;
-		opts.omtu     = l2cap_pi(sk)->omtu;
-		opts.flush_to = l2cap_pi(sk)->flush_to;
-		opts.mode     = l2cap_pi(sk)->mode;
-		opts.fcs      = l2cap_pi(sk)->fcs;
-		opts.max_tx   = l2cap_pi(sk)->max_tx;
-		opts.txwin_size = (__u16)l2cap_pi(sk)->tx_win;
-
-		len = min_t(unsigned int, sizeof(opts), optlen);
-		if (copy_from_user((char *) &opts, optval, len)) {
-			err = -EFAULT;
-			break;
-		}
-
-		if (opts.txwin_size > L2CAP_DEFAULT_TX_WINDOW) {
-			err = -EINVAL;
-			break;
-		}
-
-		l2cap_pi(sk)->mode = opts.mode;
-		switch (l2cap_pi(sk)->mode) {
-		case L2CAP_MODE_BASIC:
-			l2cap_pi(sk)->conf_state &= ~L2CAP_CONF_STATE2_DEVICE;
-			break;
-		case L2CAP_MODE_ERTM:
-		case L2CAP_MODE_STREAMING:
-			if (!disable_ertm)
-				break;
-			/* fall through */
-		default:
-			err = -EINVAL;
-			break;
-		}
-
-		l2cap_pi(sk)->imtu = opts.imtu;
-		l2cap_pi(sk)->omtu = opts.omtu;
-		l2cap_pi(sk)->fcs  = opts.fcs;
-		l2cap_pi(sk)->max_tx = opts.max_tx;
-		l2cap_pi(sk)->tx_win = (__u8)opts.txwin_size;
-		break;
-
-	case L2CAP_LM:
-		if (get_user(opt, (u32 __user *) optval)) {
-			err = -EFAULT;
-			break;
-		}
-
-		if (opt & L2CAP_LM_AUTH)
-			l2cap_pi(sk)->sec_level = BT_SECURITY_LOW;
-		if (opt & L2CAP_LM_ENCRYPT)
-			l2cap_pi(sk)->sec_level = BT_SECURITY_MEDIUM;
-		if (opt & L2CAP_LM_SECURE)
-			l2cap_pi(sk)->sec_level = BT_SECURITY_HIGH;
-
-		l2cap_pi(sk)->role_switch    = (opt & L2CAP_LM_MASTER);
-		l2cap_pi(sk)->force_reliable = (opt & L2CAP_LM_RELIABLE);
-		break;
-
-	default:
-		err = -ENOPROTOOPT;
-		break;
-	}
-
-	release_sock(sk);
-	return err;
-}
-
-static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen)
-{
-	struct sock *sk = sock->sk;
-	struct bt_security sec;
-	int len, err = 0;
-	u32 opt;
-
-	BT_DBG("sk %p", sk);
-
-	if (level == SOL_L2CAP)
-		return l2cap_sock_setsockopt_old(sock, optname, optval, optlen);
-
-	if (level != SOL_BLUETOOTH)
-		return -ENOPROTOOPT;
-
-	lock_sock(sk);
-
-	switch (optname) {
-	case BT_SECURITY:
-		if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM
-				&& sk->sk_type != SOCK_RAW) {
-			err = -EINVAL;
-			break;
-		}
-
-		sec.level = BT_SECURITY_LOW;
-
-		len = min_t(unsigned int, sizeof(sec), optlen);
-		if (copy_from_user((char *) &sec, optval, len)) {
-			err = -EFAULT;
-			break;
-		}
-
-		if (sec.level < BT_SECURITY_LOW ||
-					sec.level > BT_SECURITY_HIGH) {
-			err = -EINVAL;
-			break;
-		}
-
-		l2cap_pi(sk)->sec_level = sec.level;
-		break;
-
-	case BT_DEFER_SETUP:
-		if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
-			err = -EINVAL;
-			break;
-		}
-
-		if (get_user(opt, (u32 __user *) optval)) {
-			err = -EFAULT;
-			break;
-		}
-
-		bt_sk(sk)->defer_setup = opt;
-		break;
-
-	case BT_FLUSHABLE:
-		if (get_user(opt, (u32 __user *) optval)) {
-			err = -EFAULT;
-			break;
-		}
-
-		if (opt > BT_FLUSHABLE_ON) {
-			err = -EINVAL;
-			break;
-		}
-
-		if (opt == BT_FLUSHABLE_OFF) {
-			struct l2cap_conn *conn = l2cap_pi(sk)->conn;
-			/* proceed futher only when we have l2cap_conn and
-			   No Flush support in the LM */
-			if (!conn || !lmp_no_flush_capable(conn->hcon->hdev)) {
-				err = -EINVAL;
-				break;
-			}
-		}
-
-		l2cap_pi(sk)->flushable = opt;
-		break;
-
-	default:
-		err = -ENOPROTOOPT;
-		break;
-	}
-
-	release_sock(sk);
-	return err;
-}
-
-static int l2cap_sock_getsockopt_old(struct socket *sock, int optname, char __user *optval, int __user *optlen)
-{
-	struct sock *sk = sock->sk;
-	struct l2cap_options opts;
-	struct l2cap_conninfo cinfo;
-	int len, err = 0;
-	u32 opt;
-
-	BT_DBG("sk %p", sk);
-
-	if (get_user(len, optlen))
-		return -EFAULT;
-
-	lock_sock(sk);
-
-	switch (optname) {
-	case L2CAP_OPTIONS:
-		opts.imtu     = l2cap_pi(sk)->imtu;
-		opts.omtu     = l2cap_pi(sk)->omtu;
-		opts.flush_to = l2cap_pi(sk)->flush_to;
-		opts.mode     = l2cap_pi(sk)->mode;
-		opts.fcs      = l2cap_pi(sk)->fcs;
-		opts.max_tx   = l2cap_pi(sk)->max_tx;
-		opts.txwin_size = (__u16)l2cap_pi(sk)->tx_win;
-
-		len = min_t(unsigned int, len, sizeof(opts));
-		if (copy_to_user(optval, (char *) &opts, len))
-			err = -EFAULT;
-
-		break;
-
-	case L2CAP_LM:
-		switch (l2cap_pi(sk)->sec_level) {
-		case BT_SECURITY_LOW:
-			opt = L2CAP_LM_AUTH;
-			break;
-		case BT_SECURITY_MEDIUM:
-			opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT;
-			break;
-		case BT_SECURITY_HIGH:
-			opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT |
-							L2CAP_LM_SECURE;
-			break;
-		default:
-			opt = 0;
-			break;
-		}
-
-		if (l2cap_pi(sk)->role_switch)
-			opt |= L2CAP_LM_MASTER;
-
-		if (l2cap_pi(sk)->force_reliable)
-			opt |= L2CAP_LM_RELIABLE;
-
-		if (put_user(opt, (u32 __user *) optval))
-			err = -EFAULT;
-		break;
-
-	case L2CAP_CONNINFO:
-		if (sk->sk_state != BT_CONNECTED &&
-					!(sk->sk_state == BT_CONNECT2 &&
-						bt_sk(sk)->defer_setup)) {
-			err = -ENOTCONN;
-			break;
-		}
-
-		cinfo.hci_handle = l2cap_pi(sk)->conn->hcon->handle;
-		memcpy(cinfo.dev_class, l2cap_pi(sk)->conn->hcon->dev_class, 3);
-
-		len = min_t(unsigned int, len, sizeof(cinfo));
-		if (copy_to_user(optval, (char *) &cinfo, len))
-			err = -EFAULT;
-
-		break;
-
-	default:
-		err = -ENOPROTOOPT;
-		break;
-	}
-
-	release_sock(sk);
-	return err;
-}
-
-static int l2cap_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen)
-{
-	struct sock *sk = sock->sk;
-	struct bt_security sec;
-	int len, err = 0;
-
-	BT_DBG("sk %p", sk);
-
-	if (level == SOL_L2CAP)
-		return l2cap_sock_getsockopt_old(sock, optname, optval, optlen);
-
-	if (level != SOL_BLUETOOTH)
-		return -ENOPROTOOPT;
-
-	if (get_user(len, optlen))
-		return -EFAULT;
-
-	lock_sock(sk);
-
-	switch (optname) {
-	case BT_SECURITY:
-		if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM
-				&& sk->sk_type != SOCK_RAW) {
-			err = -EINVAL;
-			break;
-		}
-
-		sec.level = l2cap_pi(sk)->sec_level;
-
-		len = min_t(unsigned int, len, sizeof(sec));
-		if (copy_to_user(optval, (char *) &sec, len))
-			err = -EFAULT;
-
-		break;
-
-	case BT_DEFER_SETUP:
-		if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
-			err = -EINVAL;
-			break;
-		}
-
-		if (put_user(bt_sk(sk)->defer_setup, (u32 __user *) optval))
-			err = -EFAULT;
-
-		break;
-
-	case BT_FLUSHABLE:
-		if (put_user(l2cap_pi(sk)->flushable, (u32 __user *) optval))
-			err = -EFAULT;
-
-		break;
-
-	default:
-		err = -ENOPROTOOPT;
-		break;
-	}
-
-	release_sock(sk);
-	return err;
-}
-
-static int l2cap_sock_shutdown(struct socket *sock, int how)
-{
-	struct sock *sk = sock->sk;
-	int err = 0;
-
-	BT_DBG("sock %p, sk %p", sock, sk);
-
-	if (!sk)
-		return 0;
-
-	lock_sock(sk);
-	if (!sk->sk_shutdown) {
-		if (l2cap_pi(sk)->mode == L2CAP_MODE_ERTM)
-			err = __l2cap_wait_ack(sk);
-
-		sk->sk_shutdown = SHUTDOWN_MASK;
-		l2cap_sock_clear_timer(sk);
-		__l2cap_sock_close(sk, 0);
-
-		if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime)
-			err = bt_sock_wait_state(sk, BT_CLOSED,
-							sk->sk_lingertime);
-	}
-
-	if (!err && sk->sk_err)
-		err = -sk->sk_err;
-
-	release_sock(sk);
-	return err;
-}
-
-static int l2cap_sock_release(struct socket *sock)
-{
-	struct sock *sk = sock->sk;
-	int err;
-
-	BT_DBG("sock %p, sk %p", sock, sk);
-
-	if (!sk)
-		return 0;
-
-	err = l2cap_sock_shutdown(sock, 2);
-
-	sock_orphan(sk);
-	l2cap_sock_kill(sk);
-	return err;
-}
-
-static void l2cap_chan_ready(struct sock *sk)
-{
-	struct sock *parent = bt_sk(sk)->parent;
-
-	BT_DBG("sk %p, parent %p", sk, parent);
-
-	l2cap_pi(sk)->conf_state = 0;
-	l2cap_sock_clear_timer(sk);
-
-	if (!parent) {
-		/* Outgoing channel.
-		 * Wake up socket sleeping on connect.
-		 */
-		sk->sk_state = BT_CONNECTED;
-		sk->sk_state_change(sk);
-	} else {
-		/* Incoming channel.
-		 * Wake up socket sleeping on accept.
-		 */
-		parent->sk_data_ready(parent, 0);
-	}
-}
-
-/* Copy frame to all raw sockets on that connection */
-static void l2cap_raw_recv(struct l2cap_conn *conn, struct sk_buff *skb)
-{
-	struct l2cap_chan_list *l = &conn->chan_list;
-	struct sk_buff *nskb;
-	struct sock *sk;
-
-	BT_DBG("conn %p", conn);
-
-	read_lock(&l->lock);
-	for (sk = l->head; sk; sk = l2cap_pi(sk)->next_c) {
-		if (sk->sk_type != SOCK_RAW)
-			continue;
-
-		/* Don't send frame to the socket it came from */
-		if (skb->sk == sk)
-			continue;
-		nskb = skb_clone(skb, GFP_ATOMIC);
-		if (!nskb)
-			continue;
-
-		if (sock_queue_rcv_skb(sk, nskb))
-			kfree_skb(nskb);
-	}
-	read_unlock(&l->lock);
-}
-
-/* ---- L2CAP signalling commands ---- */
-static struct sk_buff *l2cap_build_cmd(struct l2cap_conn *conn,
-				u8 code, u8 ident, u16 dlen, void *data)
-{
-	struct sk_buff *skb, **frag;
-	struct l2cap_cmd_hdr *cmd;
-	struct l2cap_hdr *lh;
-	int len, count;
-
-	BT_DBG("conn %p, code 0x%2.2x, ident 0x%2.2x, len %d",
-			conn, code, ident, dlen);
-
-	len = L2CAP_HDR_SIZE + L2CAP_CMD_HDR_SIZE + dlen;
-	count = min_t(unsigned int, conn->mtu, len);
-
-	skb = bt_skb_alloc(count, GFP_ATOMIC);
-	if (!skb)
-		return NULL;
-
-	lh = (struct l2cap_hdr *) skb_put(skb, L2CAP_HDR_SIZE);
-	lh->len = cpu_to_le16(L2CAP_CMD_HDR_SIZE + dlen);
-	lh->cid = cpu_to_le16(L2CAP_CID_SIGNALING);
-
-	cmd = (struct l2cap_cmd_hdr *) skb_put(skb, L2CAP_CMD_HDR_SIZE);
-	cmd->code  = code;
-	cmd->ident = ident;
-	cmd->len   = cpu_to_le16(dlen);
-
-	if (dlen) {
-		count -= L2CAP_HDR_SIZE + L2CAP_CMD_HDR_SIZE;
-		memcpy(skb_put(skb, count), data, count);
-		data += count;
-	}
-
-	len -= skb->len;
-
-	/* Continuation fragments (no L2CAP header) */
-	frag = &skb_shinfo(skb)->frag_list;
-	while (len) {
-		count = min_t(unsigned int, conn->mtu, len);
-
-		*frag = bt_skb_alloc(count, GFP_ATOMIC);
-		if (!*frag)
-			goto fail;
-
-		memcpy(skb_put(*frag, count), data, count);
-
-		len  -= count;
-		data += count;
-
-		frag = &(*frag)->next;
-	}
-
-	return skb;
-
-fail:
-	kfree_skb(skb);
-	return NULL;
-}
-
-static inline int l2cap_get_conf_opt(void **ptr, int *type, int *olen, unsigned long *val)
-{
-	struct l2cap_conf_opt *opt = *ptr;
-	int len;
-
-	len = L2CAP_CONF_OPT_SIZE + opt->len;
-	*ptr += len;
-
-	*type = opt->type;
-	*olen = opt->len;
-
-	switch (opt->len) {
-	case 1:
-		*val = *((u8 *) opt->val);
-		break;
-
-	case 2:
-		*val = get_unaligned_le16(opt->val);
-		break;
-
-	case 4:
-		*val = get_unaligned_le32(opt->val);
-		break;
-
-	default:
-		*val = (unsigned long) opt->val;
-		break;
-	}
-
-	BT_DBG("type 0x%2.2x len %d val 0x%lx", *type, opt->len, *val);
-	return len;
-}
-
-static void l2cap_add_conf_opt(void **ptr, u8 type, u8 len, unsigned long val)
-{
-	struct l2cap_conf_opt *opt = *ptr;
-
-	BT_DBG("type 0x%2.2x len %d val 0x%lx", type, len, val);
-
-	opt->type = type;
-	opt->len  = len;
-
-	switch (len) {
-	case 1:
-		*((u8 *) opt->val)  = val;
-		break;
-
-	case 2:
-		put_unaligned_le16(val, opt->val);
-		break;
-
-	case 4:
-		put_unaligned_le32(val, opt->val);
-		break;
-
-	default:
-		memcpy(opt->val, (void *) val, len);
-		break;
-	}
-
-	*ptr += L2CAP_CONF_OPT_SIZE + len;
-}
-
-static void l2cap_ack_timeout(unsigned long arg)
-{
-	struct sock *sk = (void *) arg;
-
-	bh_lock_sock(sk);
-	l2cap_send_ack(l2cap_pi(sk));
-	bh_unlock_sock(sk);
-}
-
-static inline void l2cap_ertm_init(struct sock *sk)
-{
-	l2cap_pi(sk)->expected_ack_seq = 0;
-	l2cap_pi(sk)->unacked_frames = 0;
-	l2cap_pi(sk)->buffer_seq = 0;
-	l2cap_pi(sk)->num_acked = 0;
-	l2cap_pi(sk)->frames_sent = 0;
-
-	setup_timer(&l2cap_pi(sk)->retrans_timer,
-			l2cap_retrans_timeout, (unsigned long) sk);
-	setup_timer(&l2cap_pi(sk)->monitor_timer,
-			l2cap_monitor_timeout, (unsigned long) sk);
-	setup_timer(&l2cap_pi(sk)->ack_timer,
-			l2cap_ack_timeout, (unsigned long) sk);
-
-	__skb_queue_head_init(SREJ_QUEUE(sk));
-	__skb_queue_head_init(BUSY_QUEUE(sk));
-
-	INIT_WORK(&l2cap_pi(sk)->busy_work, l2cap_busy_work);
-
-	sk->sk_backlog_rcv = l2cap_ertm_data_rcv;
-}
-
-static inline __u8 l2cap_select_mode(__u8 mode, __u16 remote_feat_mask)
-{
-	switch (mode) {
-	case L2CAP_MODE_STREAMING:
-	case L2CAP_MODE_ERTM:
-		if (l2cap_mode_supported(mode, remote_feat_mask))
-			return mode;
-		/* fall through */
-	default:
-		return L2CAP_MODE_BASIC;
-	}
-}
-
-static int l2cap_build_conf_req(struct sock *sk, void *data)
-{
-	struct l2cap_pinfo *pi = l2cap_pi(sk);
-	struct l2cap_conf_req *req = data;
-	struct l2cap_conf_rfc rfc = { .mode = pi->mode };
-	void *ptr = req->data;
-
-	BT_DBG("sk %p", sk);
-
-	if (pi->num_conf_req || pi->num_conf_rsp)
-		goto done;
-
-	switch (pi->mode) {
-	case L2CAP_MODE_STREAMING:
-	case L2CAP_MODE_ERTM:
-		if (pi->conf_state & L2CAP_CONF_STATE2_DEVICE)
-			break;
-
-		/* fall through */
-	default:
-		pi->mode = l2cap_select_mode(rfc.mode, pi->conn->feat_mask);
-		break;
-	}
-
-done:
-	if (pi->imtu != L2CAP_DEFAULT_MTU)
-		l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, pi->imtu);
-
-	switch (pi->mode) {
-	case L2CAP_MODE_BASIC:
-		if (!(pi->conn->feat_mask & L2CAP_FEAT_ERTM) &&
-				!(pi->conn->feat_mask & L2CAP_FEAT_STREAMING))
-			break;
-
-		rfc.mode            = L2CAP_MODE_BASIC;
-		rfc.txwin_size      = 0;
-		rfc.max_transmit    = 0;
-		rfc.retrans_timeout = 0;
-		rfc.monitor_timeout = 0;
-		rfc.max_pdu_size    = 0;
-
-		l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC, sizeof(rfc),
-							(unsigned long) &rfc);
-		break;
-
-	case L2CAP_MODE_ERTM:
-		rfc.mode            = L2CAP_MODE_ERTM;
-		rfc.txwin_size      = pi->tx_win;
-		rfc.max_transmit    = pi->max_tx;
-		rfc.retrans_timeout = 0;
-		rfc.monitor_timeout = 0;
-		rfc.max_pdu_size    = cpu_to_le16(L2CAP_DEFAULT_MAX_PDU_SIZE);
-		if (L2CAP_DEFAULT_MAX_PDU_SIZE > pi->conn->mtu - 10)
-			rfc.max_pdu_size = cpu_to_le16(pi->conn->mtu - 10);
-
-		l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC, sizeof(rfc),
-							(unsigned long) &rfc);
-
-		if (!(pi->conn->feat_mask & L2CAP_FEAT_FCS))
-			break;
-
-		if (pi->fcs == L2CAP_FCS_NONE ||
-				pi->conf_state & L2CAP_CONF_NO_FCS_RECV) {
-			pi->fcs = L2CAP_FCS_NONE;
-			l2cap_add_conf_opt(&ptr, L2CAP_CONF_FCS, 1, pi->fcs);
-		}
-		break;
-
-	case L2CAP_MODE_STREAMING:
-		rfc.mode            = L2CAP_MODE_STREAMING;
-		rfc.txwin_size      = 0;
-		rfc.max_transmit    = 0;
-		rfc.retrans_timeout = 0;
-		rfc.monitor_timeout = 0;
-		rfc.max_pdu_size    = cpu_to_le16(L2CAP_DEFAULT_MAX_PDU_SIZE);
-		if (L2CAP_DEFAULT_MAX_PDU_SIZE > pi->conn->mtu - 10)
-			rfc.max_pdu_size = cpu_to_le16(pi->conn->mtu - 10);
-
-		l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC, sizeof(rfc),
-							(unsigned long) &rfc);
-
-		if (!(pi->conn->feat_mask & L2CAP_FEAT_FCS))
-			break;
-
-		if (pi->fcs == L2CAP_FCS_NONE ||
-				pi->conf_state & L2CAP_CONF_NO_FCS_RECV) {
-			pi->fcs = L2CAP_FCS_NONE;
-			l2cap_add_conf_opt(&ptr, L2CAP_CONF_FCS, 1, pi->fcs);
-		}
-		break;
-	}
-
-	/* FIXME: Need actual value of the flush timeout */
-	//if (flush_to != L2CAP_DEFAULT_FLUSH_TO)
-	//   l2cap_add_conf_opt(&ptr, L2CAP_CONF_FLUSH_TO, 2, pi->flush_to);
-
-	req->dcid  = cpu_to_le16(pi->dcid);
-	req->flags = cpu_to_le16(0);
-
-	return ptr - data;
-}
-
-static int l2cap_parse_conf_req(struct sock *sk, void *data)
-{
-	struct l2cap_pinfo *pi = l2cap_pi(sk);
-	struct l2cap_conf_rsp *rsp = data;
-	void *ptr = rsp->data;
-	void *req = pi->conf_req;
-	int len = pi->conf_len;
-	int type, hint, olen;
-	unsigned long val;
-	struct l2cap_conf_rfc rfc = { .mode = L2CAP_MODE_BASIC };
-	u16 mtu = L2CAP_DEFAULT_MTU;
-	u16 result = L2CAP_CONF_SUCCESS;
-
-	BT_DBG("sk %p", sk);
-
-	while (len >= L2CAP_CONF_OPT_SIZE) {
-		len -= l2cap_get_conf_opt(&req, &type, &olen, &val);
-
-		hint  = type & L2CAP_CONF_HINT;
-		type &= L2CAP_CONF_MASK;
-
-		switch (type) {
-		case L2CAP_CONF_MTU:
-			mtu = val;
-			break;
-
-		case L2CAP_CONF_FLUSH_TO:
-			pi->flush_to = val;
-			break;
-
-		case L2CAP_CONF_QOS:
-			break;
-
-		case L2CAP_CONF_RFC:
-			if (olen == sizeof(rfc))
-				memcpy(&rfc, (void *) val, olen);
-			break;
-
-		case L2CAP_CONF_FCS:
-			if (val == L2CAP_FCS_NONE)
-				pi->conf_state |= L2CAP_CONF_NO_FCS_RECV;
-
-			break;
-
-		default:
-			if (hint)
-				break;
-
-			result = L2CAP_CONF_UNKNOWN;
-			*((u8 *) ptr++) = type;
-			break;
-		}
-	}
-
-	if (pi->num_conf_rsp || pi->num_conf_req > 1)
-		goto done;
-
-	switch (pi->mode) {
-	case L2CAP_MODE_STREAMING:
-	case L2CAP_MODE_ERTM:
-		if (!(pi->conf_state & L2CAP_CONF_STATE2_DEVICE)) {
-			pi->mode = l2cap_select_mode(rfc.mode,
-					pi->conn->feat_mask);
-			break;
-		}
-
-		if (pi->mode != rfc.mode)
-			return -ECONNREFUSED;
-
-		break;
-	}
-
-done:
-	if (pi->mode != rfc.mode) {
-		result = L2CAP_CONF_UNACCEPT;
-		rfc.mode = pi->mode;
-
-		if (pi->num_conf_rsp == 1)
-			return -ECONNREFUSED;
-
-		l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC,
-					sizeof(rfc), (unsigned long) &rfc);
-	}
-
-
-	if (result == L2CAP_CONF_SUCCESS) {
-		/* Configure output options and let the other side know
-		 * which ones we don't like. */
-
-		if (mtu < L2CAP_DEFAULT_MIN_MTU)
-			result = L2CAP_CONF_UNACCEPT;
-		else {
-			pi->omtu = mtu;
-			pi->conf_state |= L2CAP_CONF_MTU_DONE;
-		}
-		l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, pi->omtu);
-
-		switch (rfc.mode) {
-		case L2CAP_MODE_BASIC:
-			pi->fcs = L2CAP_FCS_NONE;
-			pi->conf_state |= L2CAP_CONF_MODE_DONE;
-			break;
-
-		case L2CAP_MODE_ERTM:
-			pi->remote_tx_win = rfc.txwin_size;
-			pi->remote_max_tx = rfc.max_transmit;
-
-			if (le16_to_cpu(rfc.max_pdu_size) > pi->conn->mtu - 10)
-				rfc.max_pdu_size = cpu_to_le16(pi->conn->mtu - 10);
-
-			pi->remote_mps = le16_to_cpu(rfc.max_pdu_size);
-
-			rfc.retrans_timeout =
-				le16_to_cpu(L2CAP_DEFAULT_RETRANS_TO);
-			rfc.monitor_timeout =
-				le16_to_cpu(L2CAP_DEFAULT_MONITOR_TO);
-
-			pi->conf_state |= L2CAP_CONF_MODE_DONE;
-
-			l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC,
-					sizeof(rfc), (unsigned long) &rfc);
-
-			break;
-
-		case L2CAP_MODE_STREAMING:
-			if (le16_to_cpu(rfc.max_pdu_size) > pi->conn->mtu - 10)
-				rfc.max_pdu_size = cpu_to_le16(pi->conn->mtu - 10);
-
-			pi->remote_mps = le16_to_cpu(rfc.max_pdu_size);
-
-			pi->conf_state |= L2CAP_CONF_MODE_DONE;
-
-			l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC,
-					sizeof(rfc), (unsigned long) &rfc);
-
-			break;
-
-		default:
-			result = L2CAP_CONF_UNACCEPT;
-
-			memset(&rfc, 0, sizeof(rfc));
-			rfc.mode = pi->mode;
-		}
-
-		if (result == L2CAP_CONF_SUCCESS)
-			pi->conf_state |= L2CAP_CONF_OUTPUT_DONE;
-	}
-	rsp->scid   = cpu_to_le16(pi->dcid);
-	rsp->result = cpu_to_le16(result);
-	rsp->flags  = cpu_to_le16(0x0000);
-
-	return ptr - data;
-}
-
-static int l2cap_parse_conf_rsp(struct sock *sk, void *rsp, int len, void *data, u16 *result)
-{
-	struct l2cap_pinfo *pi = l2cap_pi(sk);
-	struct l2cap_conf_req *req = data;
-	void *ptr = req->data;
-	int type, olen;
-	unsigned long val;
-	struct l2cap_conf_rfc rfc;
-
-	BT_DBG("sk %p, rsp %p, len %d, req %p", sk, rsp, len, data);
-
-	while (len >= L2CAP_CONF_OPT_SIZE) {
-		len -= l2cap_get_conf_opt(&rsp, &type, &olen, &val);
-
-		switch (type) {
-		case L2CAP_CONF_MTU:
-			if (val < L2CAP_DEFAULT_MIN_MTU) {
-				*result = L2CAP_CONF_UNACCEPT;
-				pi->imtu = L2CAP_DEFAULT_MIN_MTU;
-			} else
-				pi->imtu = val;
-			l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, pi->imtu);
-			break;
-
-		case L2CAP_CONF_FLUSH_TO:
-			pi->flush_to = val;
-			l2cap_add_conf_opt(&ptr, L2CAP_CONF_FLUSH_TO,
-							2, pi->flush_to);
-			break;
-
-		case L2CAP_CONF_RFC:
-			if (olen == sizeof(rfc))
-				memcpy(&rfc, (void *)val, olen);
-
-			if ((pi->conf_state & L2CAP_CONF_STATE2_DEVICE) &&
-							rfc.mode != pi->mode)
-				return -ECONNREFUSED;
-
-			pi->fcs = 0;
-
-			l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC,
-					sizeof(rfc), (unsigned long) &rfc);
-			break;
-		}
-	}
-
-	if (pi->mode == L2CAP_MODE_BASIC && pi->mode != rfc.mode)
-		return -ECONNREFUSED;
-
-	pi->mode = rfc.mode;
-
-	if (*result == L2CAP_CONF_SUCCESS) {
-		switch (rfc.mode) {
-		case L2CAP_MODE_ERTM:
-			pi->retrans_timeout = le16_to_cpu(rfc.retrans_timeout);
-			pi->monitor_timeout = le16_to_cpu(rfc.monitor_timeout);
-			pi->mps    = le16_to_cpu(rfc.max_pdu_size);
-			break;
-		case L2CAP_MODE_STREAMING:
-			pi->mps    = le16_to_cpu(rfc.max_pdu_size);
-		}
-	}
-
-	req->dcid   = cpu_to_le16(pi->dcid);
-	req->flags  = cpu_to_le16(0x0000);
-
-	return ptr - data;
-}
-
-static int l2cap_build_conf_rsp(struct sock *sk, void *data, u16 result, u16 flags)
-{
-	struct l2cap_conf_rsp *rsp = data;
-	void *ptr = rsp->data;
-
-	BT_DBG("sk %p", sk);
-
-	rsp->scid   = cpu_to_le16(l2cap_pi(sk)->dcid);
-	rsp->result = cpu_to_le16(result);
-	rsp->flags  = cpu_to_le16(flags);
-
-	return ptr - data;
-}
-
-static void l2cap_conf_rfc_get(struct sock *sk, void *rsp, int len)
-{
-	struct l2cap_pinfo *pi = l2cap_pi(sk);
-	int type, olen;
-	unsigned long val;
-	struct l2cap_conf_rfc rfc;
-
-	BT_DBG("sk %p, rsp %p, len %d", sk, rsp, len);
-
-	if ((pi->mode != L2CAP_MODE_ERTM) && (pi->mode != L2CAP_MODE_STREAMING))
-		return;
-
-	while (len >= L2CAP_CONF_OPT_SIZE) {
-		len -= l2cap_get_conf_opt(&rsp, &type, &olen, &val);
-
-		switch (type) {
-		case L2CAP_CONF_RFC:
-			if (olen == sizeof(rfc))
-				memcpy(&rfc, (void *)val, olen);
-			goto done;
-		}
-	}
-
-done:
-	switch (rfc.mode) {
-	case L2CAP_MODE_ERTM:
-		pi->retrans_timeout = le16_to_cpu(rfc.retrans_timeout);
-		pi->monitor_timeout = le16_to_cpu(rfc.monitor_timeout);
-		pi->mps    = le16_to_cpu(rfc.max_pdu_size);
-		break;
-	case L2CAP_MODE_STREAMING:
-		pi->mps    = le16_to_cpu(rfc.max_pdu_size);
-	}
-}
-
-static inline int l2cap_command_rej(struct l2cap_conn *conn, struct l2cap_cmd_hdr *cmd, u8 *data)
-{
-	struct l2cap_cmd_rej *rej = (struct l2cap_cmd_rej *) data;
-
-	if (rej->reason != 0x0000)
-		return 0;
-
-	if ((conn->info_state & L2CAP_INFO_FEAT_MASK_REQ_SENT) &&
-					cmd->ident == conn->info_ident) {
-		del_timer(&conn->info_timer);
-
-		conn->info_state |= L2CAP_INFO_FEAT_MASK_REQ_DONE;
-		conn->info_ident = 0;
-
-		l2cap_conn_start(conn);
-	}
-
-	return 0;
-}
-
-static inline int l2cap_connect_req(struct l2cap_conn *conn, struct l2cap_cmd_hdr *cmd, u8 *data)
-{
-	struct l2cap_chan_list *list = &conn->chan_list;
-	struct l2cap_conn_req *req = (struct l2cap_conn_req *) data;
-	struct l2cap_conn_rsp rsp;
-	struct sock *parent, *sk = NULL;
-	int result, status = L2CAP_CS_NO_INFO;
-
-	u16 dcid = 0, scid = __le16_to_cpu(req->scid);
-	__le16 psm = req->psm;
-
-	BT_DBG("psm 0x%2.2x scid 0x%4.4x", psm, scid);
-
-	/* Check if we have socket listening on psm */
-	parent = l2cap_get_sock_by_psm(BT_LISTEN, psm, conn->src);
-	if (!parent) {
-		result = L2CAP_CR_BAD_PSM;
-		goto sendresp;
-	}
-
-	bh_lock_sock(parent);
-
-	/* Check if the ACL is secure enough (if not SDP) */
-	if (psm != cpu_to_le16(0x0001) &&
-				!hci_conn_check_link_mode(conn->hcon)) {
-		conn->disc_reason = 0x05;
-		result = L2CAP_CR_SEC_BLOCK;
-		goto response;
-	}
-
-	result = L2CAP_CR_NO_MEM;
-
-	/* Check for backlog size */
-	if (sk_acceptq_is_full(parent)) {
-		BT_DBG("backlog full %d", parent->sk_ack_backlog);
-		goto response;
-	}
-
-	sk = l2cap_sock_alloc(sock_net(parent), NULL, BTPROTO_L2CAP, GFP_ATOMIC);
-	if (!sk)
-		goto response;
-
-	write_lock_bh(&list->lock);
-
-	/* Check if we already have channel with that dcid */
-	if (__l2cap_get_chan_by_dcid(list, scid)) {
-		write_unlock_bh(&list->lock);
-		sock_set_flag(sk, SOCK_ZAPPED);
-		l2cap_sock_kill(sk);
-		goto response;
-	}
-
-	hci_conn_hold(conn->hcon);
-
-	l2cap_sock_init(sk, parent);
-	bacpy(&bt_sk(sk)->src, conn->src);
-	bacpy(&bt_sk(sk)->dst, conn->dst);
-	l2cap_pi(sk)->psm  = psm;
-	l2cap_pi(sk)->dcid = scid;
-
-	__l2cap_chan_add(conn, sk, parent);
-	dcid = l2cap_pi(sk)->scid;
-
-	l2cap_sock_set_timer(sk, sk->sk_sndtimeo);
-
-	l2cap_pi(sk)->ident = cmd->ident;
-
-	if (conn->info_state & L2CAP_INFO_FEAT_MASK_REQ_DONE) {
-		if (l2cap_check_security(sk)) {
-			if (bt_sk(sk)->defer_setup) {
-				sk->sk_state = BT_CONNECT2;
-				result = L2CAP_CR_PEND;
-				status = L2CAP_CS_AUTHOR_PEND;
-				parent->sk_data_ready(parent, 0);
-			} else {
-				sk->sk_state = BT_CONFIG;
-				result = L2CAP_CR_SUCCESS;
-				status = L2CAP_CS_NO_INFO;
-			}
-		} else {
-			sk->sk_state = BT_CONNECT2;
-			result = L2CAP_CR_PEND;
-			status = L2CAP_CS_AUTHEN_PEND;
-		}
-	} else {
-		sk->sk_state = BT_CONNECT2;
-		result = L2CAP_CR_PEND;
-		status = L2CAP_CS_NO_INFO;
-	}
-
-	write_unlock_bh(&list->lock);
-
-response:
-	bh_unlock_sock(parent);
-
-sendresp:
-	rsp.scid   = cpu_to_le16(scid);
-	rsp.dcid   = cpu_to_le16(dcid);
-	rsp.result = cpu_to_le16(result);
-	rsp.status = cpu_to_le16(status);
-	l2cap_send_cmd(conn, cmd->ident, L2CAP_CONN_RSP, sizeof(rsp), &rsp);
-
-	if (result == L2CAP_CR_PEND && status == L2CAP_CS_NO_INFO) {
-		struct l2cap_info_req info;
-		info.type = cpu_to_le16(L2CAP_IT_FEAT_MASK);
-
-		conn->info_state |= L2CAP_INFO_FEAT_MASK_REQ_SENT;
-		conn->info_ident = l2cap_get_ident(conn);
-
-		mod_timer(&conn->info_timer, jiffies +
-					msecs_to_jiffies(L2CAP_INFO_TIMEOUT));
-
-		l2cap_send_cmd(conn, conn->info_ident,
-					L2CAP_INFO_REQ, sizeof(info), &info);
-	}
-
-	if (sk && !(l2cap_pi(sk)->conf_state & L2CAP_CONF_REQ_SENT) &&
-				result == L2CAP_CR_SUCCESS) {
-		u8 buf[128];
-		l2cap_pi(sk)->conf_state |= L2CAP_CONF_REQ_SENT;
-		l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
-					l2cap_build_conf_req(sk, buf), buf);
-		l2cap_pi(sk)->num_conf_req++;
-	}
-
-	return 0;
-}
-
-static inline int l2cap_connect_rsp(struct l2cap_conn *conn, struct l2cap_cmd_hdr *cmd, u8 *data)
-{
-	struct l2cap_conn_rsp *rsp = (struct l2cap_conn_rsp *) data;
-	u16 scid, dcid, result, status;
-	struct sock *sk;
-	u8 req[128];
-
-	scid   = __le16_to_cpu(rsp->scid);
-	dcid   = __le16_to_cpu(rsp->dcid);
-	result = __le16_to_cpu(rsp->result);
-	status = __le16_to_cpu(rsp->status);
-
-	BT_DBG("dcid 0x%4.4x scid 0x%4.4x result 0x%2.2x status 0x%2.2x", dcid, scid, result, status);
-
-	if (scid) {
-		sk = l2cap_get_chan_by_scid(&conn->chan_list, scid);
-		if (!sk)
-			return -EFAULT;
-	} else {
-		sk = l2cap_get_chan_by_ident(&conn->chan_list, cmd->ident);
-		if (!sk)
-			return -EFAULT;
-	}
-
-	switch (result) {
-	case L2CAP_CR_SUCCESS:
-		sk->sk_state = BT_CONFIG;
-		l2cap_pi(sk)->ident = 0;
-		l2cap_pi(sk)->dcid = dcid;
-		l2cap_pi(sk)->conf_state &= ~L2CAP_CONF_CONNECT_PEND;
-
-		if (l2cap_pi(sk)->conf_state & L2CAP_CONF_REQ_SENT)
-			break;
-
-		l2cap_pi(sk)->conf_state |= L2CAP_CONF_REQ_SENT;
-
-		l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
-					l2cap_build_conf_req(sk, req), req);
-		l2cap_pi(sk)->num_conf_req++;
-		break;
-
-	case L2CAP_CR_PEND:
-		l2cap_pi(sk)->conf_state |= L2CAP_CONF_CONNECT_PEND;
-		break;
-
-	default:
-		/* don't delete l2cap channel if sk is owned by user */
-		if (sock_owned_by_user(sk)) {
-			sk->sk_state = BT_DISCONN;
-			l2cap_sock_clear_timer(sk);
-			l2cap_sock_set_timer(sk, HZ / 5);
-			break;
-		}
-
-		l2cap_chan_del(sk, ECONNREFUSED);
-		break;
-	}
-
-	bh_unlock_sock(sk);
-	return 0;
-}
-
-static inline void set_default_fcs(struct l2cap_pinfo *pi)
-{
-	/* FCS is enabled only in ERTM or streaming mode, if one or both
-	 * sides request it.
-	 */
-	if (pi->mode != L2CAP_MODE_ERTM && pi->mode != L2CAP_MODE_STREAMING)
-		pi->fcs = L2CAP_FCS_NONE;
-	else if (!(pi->conf_state & L2CAP_CONF_NO_FCS_RECV))
-		pi->fcs = L2CAP_FCS_CRC16;
-}
-
-static inline int l2cap_config_req(struct l2cap_conn *conn, struct l2cap_cmd_hdr *cmd, u16 cmd_len, u8 *data)
-{
-	struct l2cap_conf_req *req = (struct l2cap_conf_req *) data;
-	u16 dcid, flags;
-	u8 rsp[64];
-	struct sock *sk;
-	int len;
-
-	dcid  = __le16_to_cpu(req->dcid);
-	flags = __le16_to_cpu(req->flags);
-
-	BT_DBG("dcid 0x%4.4x flags 0x%2.2x", dcid, flags);
-
-	sk = l2cap_get_chan_by_scid(&conn->chan_list, dcid);
-	if (!sk)
-		return -ENOENT;
-
-	if (sk->sk_state != BT_CONFIG) {
-		struct l2cap_cmd_rej rej;
-
-		rej.reason = cpu_to_le16(0x0002);
-		l2cap_send_cmd(conn, cmd->ident, L2CAP_COMMAND_REJ,
-				sizeof(rej), &rej);
-		goto unlock;
-	}
-
-	/* Reject if config buffer is too small. */
-	len = cmd_len - sizeof(*req);
-	if (l2cap_pi(sk)->conf_len + len > sizeof(l2cap_pi(sk)->conf_req)) {
-		l2cap_send_cmd(conn, cmd->ident, L2CAP_CONF_RSP,
-				l2cap_build_conf_rsp(sk, rsp,
-					L2CAP_CONF_REJECT, flags), rsp);
-		goto unlock;
-	}
-
-	/* Store config. */
-	memcpy(l2cap_pi(sk)->conf_req + l2cap_pi(sk)->conf_len, req->data, len);
-	l2cap_pi(sk)->conf_len += len;
-
-	if (flags & 0x0001) {
-		/* Incomplete config. Send empty response. */
-		l2cap_send_cmd(conn, cmd->ident, L2CAP_CONF_RSP,
-				l2cap_build_conf_rsp(sk, rsp,
-					L2CAP_CONF_SUCCESS, 0x0001), rsp);
-		goto unlock;
-	}
-
-	/* Complete config. */
-	len = l2cap_parse_conf_req(sk, rsp);
-	if (len < 0) {
-		l2cap_send_disconn_req(conn, sk, ECONNRESET);
-		goto unlock;
-	}
-
-	l2cap_send_cmd(conn, cmd->ident, L2CAP_CONF_RSP, len, rsp);
-	l2cap_pi(sk)->num_conf_rsp++;
-
-	/* Reset config buffer. */
-	l2cap_pi(sk)->conf_len = 0;
-
-	if (!(l2cap_pi(sk)->conf_state & L2CAP_CONF_OUTPUT_DONE))
-		goto unlock;
-
-	if (l2cap_pi(sk)->conf_state & L2CAP_CONF_INPUT_DONE) {
-		set_default_fcs(l2cap_pi(sk));
-
-		sk->sk_state = BT_CONNECTED;
-
-		l2cap_pi(sk)->next_tx_seq = 0;
-		l2cap_pi(sk)->expected_tx_seq = 0;
-		__skb_queue_head_init(TX_QUEUE(sk));
-		if (l2cap_pi(sk)->mode == L2CAP_MODE_ERTM)
-			l2cap_ertm_init(sk);
-
-		l2cap_chan_ready(sk);
-		goto unlock;
-	}
-
-	if (!(l2cap_pi(sk)->conf_state & L2CAP_CONF_REQ_SENT)) {
-		u8 buf[64];
-		l2cap_pi(sk)->conf_state |= L2CAP_CONF_REQ_SENT;
-		l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
-					l2cap_build_conf_req(sk, buf), buf);
-		l2cap_pi(sk)->num_conf_req++;
-	}
-
-unlock:
-	bh_unlock_sock(sk);
-	return 0;
-}
-
-static inline int l2cap_config_rsp(struct l2cap_conn *conn, struct l2cap_cmd_hdr *cmd, u8 *data)
-{
-	struct l2cap_conf_rsp *rsp = (struct l2cap_conf_rsp *)data;
-	u16 scid, flags, result;
-	struct sock *sk;
-	int len = cmd->len - sizeof(*rsp);
-
-	scid   = __le16_to_cpu(rsp->scid);
-	flags  = __le16_to_cpu(rsp->flags);
-	result = __le16_to_cpu(rsp->result);
-
-	BT_DBG("scid 0x%4.4x flags 0x%2.2x result 0x%2.2x",
-			scid, flags, result);
-
-	sk = l2cap_get_chan_by_scid(&conn->chan_list, scid);
-	if (!sk)
-		return 0;
-
-	switch (result) {
-	case L2CAP_CONF_SUCCESS:
-		l2cap_conf_rfc_get(sk, rsp->data, len);
-		break;
-
-	case L2CAP_CONF_UNACCEPT:
-		if (l2cap_pi(sk)->num_conf_rsp <= L2CAP_CONF_MAX_CONF_RSP) {
-			char req[64];
-
-			if (len > sizeof(req) - sizeof(struct l2cap_conf_req)) {
-				l2cap_send_disconn_req(conn, sk, ECONNRESET);
-				goto done;
-			}
-
-			/* throw out any old stored conf requests */
-			result = L2CAP_CONF_SUCCESS;
-			len = l2cap_parse_conf_rsp(sk, rsp->data,
-							len, req, &result);
-			if (len < 0) {
-				l2cap_send_disconn_req(conn, sk, ECONNRESET);
-				goto done;
-			}
-
-			l2cap_send_cmd(conn, l2cap_get_ident(conn),
-						L2CAP_CONF_REQ, len, req);
-			l2cap_pi(sk)->num_conf_req++;
-			if (result != L2CAP_CONF_SUCCESS)
-				goto done;
-			break;
-		}
-
-	default:
-		sk->sk_err = ECONNRESET;
-		l2cap_sock_set_timer(sk, HZ * 5);
-		l2cap_send_disconn_req(conn, sk, ECONNRESET);
-		goto done;
-	}
-
-	if (flags & 0x01)
-		goto done;
-
-	l2cap_pi(sk)->conf_state |= L2CAP_CONF_INPUT_DONE;
-
-	if (l2cap_pi(sk)->conf_state & L2CAP_CONF_OUTPUT_DONE) {
-		set_default_fcs(l2cap_pi(sk));
-
-		sk->sk_state = BT_CONNECTED;
-		l2cap_pi(sk)->next_tx_seq = 0;
-		l2cap_pi(sk)->expected_tx_seq = 0;
-		__skb_queue_head_init(TX_QUEUE(sk));
-		if (l2cap_pi(sk)->mode ==  L2CAP_MODE_ERTM)
-			l2cap_ertm_init(sk);
-
-		l2cap_chan_ready(sk);
-	}
-
-done:
-	bh_unlock_sock(sk);
-	return 0;
-}
-
-static inline int l2cap_disconnect_req(struct l2cap_conn *conn, struct l2cap_cmd_hdr *cmd, u8 *data)
-{
-	struct l2cap_disconn_req *req = (struct l2cap_disconn_req *) data;
-	struct l2cap_disconn_rsp rsp;
-	u16 dcid, scid;
-	struct sock *sk;
-
-	scid = __le16_to_cpu(req->scid);
-	dcid = __le16_to_cpu(req->dcid);
-
-	BT_DBG("scid 0x%4.4x dcid 0x%4.4x", scid, dcid);
-
-	sk = l2cap_get_chan_by_scid(&conn->chan_list, dcid);
-	if (!sk)
-		return 0;
-
-	rsp.dcid = cpu_to_le16(l2cap_pi(sk)->scid);
-	rsp.scid = cpu_to_le16(l2cap_pi(sk)->dcid);
-	l2cap_send_cmd(conn, cmd->ident, L2CAP_DISCONN_RSP, sizeof(rsp), &rsp);
-
-	sk->sk_shutdown = SHUTDOWN_MASK;
-
-	/* don't delete l2cap channel if sk is owned by user */
-	if (sock_owned_by_user(sk)) {
-		sk->sk_state = BT_DISCONN;
-		l2cap_sock_clear_timer(sk);
-		l2cap_sock_set_timer(sk, HZ / 5);
-		bh_unlock_sock(sk);
-		return 0;
-	}
-
-	l2cap_chan_del(sk, ECONNRESET);
-	bh_unlock_sock(sk);
-
-	l2cap_sock_kill(sk);
-	return 0;
-}
-
-static inline int l2cap_disconnect_rsp(struct l2cap_conn *conn, struct l2cap_cmd_hdr *cmd, u8 *data)
-{
-	struct l2cap_disconn_rsp *rsp = (struct l2cap_disconn_rsp *) data;
-	u16 dcid, scid;
-	struct sock *sk;
-
-	scid = __le16_to_cpu(rsp->scid);
-	dcid = __le16_to_cpu(rsp->dcid);
-
-	BT_DBG("dcid 0x%4.4x scid 0x%4.4x", dcid, scid);
-
-	sk = l2cap_get_chan_by_scid(&conn->chan_list, scid);
-	if (!sk)
-		return 0;
-
-	/* don't delete l2cap channel if sk is owned by user */
-	if (sock_owned_by_user(sk)) {
-		sk->sk_state = BT_DISCONN;
-		l2cap_sock_clear_timer(sk);
-		l2cap_sock_set_timer(sk, HZ / 5);
-		bh_unlock_sock(sk);
-		return 0;
-	}
-
-	l2cap_chan_del(sk, 0);
-	bh_unlock_sock(sk);
-
-	l2cap_sock_kill(sk);
-	return 0;
-}
-
-static inline int l2cap_information_req(struct l2cap_conn *conn, struct l2cap_cmd_hdr *cmd, u8 *data)
-{
-	struct l2cap_info_req *req = (struct l2cap_info_req *) data;
-	u16 type;
-
-	type = __le16_to_cpu(req->type);
-
-	BT_DBG("type 0x%4.4x", type);
-
-	if (type == L2CAP_IT_FEAT_MASK) {
-		u8 buf[8];
-		u32 feat_mask = l2cap_feat_mask;
-		struct l2cap_info_rsp *rsp = (struct l2cap_info_rsp *) buf;
-		rsp->type   = cpu_to_le16(L2CAP_IT_FEAT_MASK);
-		rsp->result = cpu_to_le16(L2CAP_IR_SUCCESS);
-		if (!disable_ertm)
-			feat_mask |= L2CAP_FEAT_ERTM | L2CAP_FEAT_STREAMING
-							 | L2CAP_FEAT_FCS;
-		put_unaligned_le32(feat_mask, rsp->data);
-		l2cap_send_cmd(conn, cmd->ident,
-					L2CAP_INFO_RSP, sizeof(buf), buf);
-	} else if (type == L2CAP_IT_FIXED_CHAN) {
-		u8 buf[12];
-		struct l2cap_info_rsp *rsp = (struct l2cap_info_rsp *) buf;
-		rsp->type   = cpu_to_le16(L2CAP_IT_FIXED_CHAN);
-		rsp->result = cpu_to_le16(L2CAP_IR_SUCCESS);
-		memcpy(buf + 4, l2cap_fixed_chan, 8);
-		l2cap_send_cmd(conn, cmd->ident,
-					L2CAP_INFO_RSP, sizeof(buf), buf);
-	} else {
-		struct l2cap_info_rsp rsp;
-		rsp.type   = cpu_to_le16(type);
-		rsp.result = cpu_to_le16(L2CAP_IR_NOTSUPP);
-		l2cap_send_cmd(conn, cmd->ident,
-					L2CAP_INFO_RSP, sizeof(rsp), &rsp);
-	}
-
-	return 0;
-}
-
-static inline int l2cap_information_rsp(struct l2cap_conn *conn, struct l2cap_cmd_hdr *cmd, u8 *data)
-{
-	struct l2cap_info_rsp *rsp = (struct l2cap_info_rsp *) data;
-	u16 type, result;
-
-	type   = __le16_to_cpu(rsp->type);
-	result = __le16_to_cpu(rsp->result);
-
-	BT_DBG("type 0x%4.4x result 0x%2.2x", type, result);
-
-	del_timer(&conn->info_timer);
-
-	if (result != L2CAP_IR_SUCCESS) {
-		conn->info_state |= L2CAP_INFO_FEAT_MASK_REQ_DONE;
-		conn->info_ident = 0;
-
-		l2cap_conn_start(conn);
-
-		return 0;
-	}
-
-	if (type == L2CAP_IT_FEAT_MASK) {
-		conn->feat_mask = get_unaligned_le32(rsp->data);
-
-		if (conn->feat_mask & L2CAP_FEAT_FIXED_CHAN) {
-			struct l2cap_info_req req;
-			req.type = cpu_to_le16(L2CAP_IT_FIXED_CHAN);
-
-			conn->info_ident = l2cap_get_ident(conn);
-
-			l2cap_send_cmd(conn, conn->info_ident,
-					L2CAP_INFO_REQ, sizeof(req), &req);
-		} else {
-			conn->info_state |= L2CAP_INFO_FEAT_MASK_REQ_DONE;
-			conn->info_ident = 0;
-
-			l2cap_conn_start(conn);
-		}
-	} else if (type == L2CAP_IT_FIXED_CHAN) {
-		conn->info_state |= L2CAP_INFO_FEAT_MASK_REQ_DONE;
-		conn->info_ident = 0;
-
-		l2cap_conn_start(conn);
-	}
-
-	return 0;
-}
-
-static inline void l2cap_sig_channel(struct l2cap_conn *conn, struct sk_buff *skb)
-{
-	u8 *data = skb->data;
-	int len = skb->len;
-	struct l2cap_cmd_hdr cmd;
-	int err = 0;
-
-	l2cap_raw_recv(conn, skb);
-
-	while (len >= L2CAP_CMD_HDR_SIZE) {
-		u16 cmd_len;
-		memcpy(&cmd, data, L2CAP_CMD_HDR_SIZE);
-		data += L2CAP_CMD_HDR_SIZE;
-		len  -= L2CAP_CMD_HDR_SIZE;
-
-		cmd_len = le16_to_cpu(cmd.len);
-
-		BT_DBG("code 0x%2.2x len %d id 0x%2.2x", cmd.code, cmd_len, cmd.ident);
-
-		if (cmd_len > len || !cmd.ident) {
-			BT_DBG("corrupted command");
-			break;
-		}
-
-		switch (cmd.code) {
-		case L2CAP_COMMAND_REJ:
-			l2cap_command_rej(conn, &cmd, data);
-			break;
-
-		case L2CAP_CONN_REQ:
-			err = l2cap_connect_req(conn, &cmd, data);
-			break;
-
-		case L2CAP_CONN_RSP:
-			err = l2cap_connect_rsp(conn, &cmd, data);
-			break;
-
-		case L2CAP_CONF_REQ:
-			err = l2cap_config_req(conn, &cmd, cmd_len, data);
-			break;
-
-		case L2CAP_CONF_RSP:
-			err = l2cap_config_rsp(conn, &cmd, data);
-			break;
-
-		case L2CAP_DISCONN_REQ:
-			err = l2cap_disconnect_req(conn, &cmd, data);
-			break;
-
-		case L2CAP_DISCONN_RSP:
-			err = l2cap_disconnect_rsp(conn, &cmd, data);
-			break;
-
-		case L2CAP_ECHO_REQ:
-			l2cap_send_cmd(conn, cmd.ident, L2CAP_ECHO_RSP, cmd_len, data);
-			break;
-
-		case L2CAP_ECHO_RSP:
-			break;
-
-		case L2CAP_INFO_REQ:
-			err = l2cap_information_req(conn, &cmd, data);
-			break;
-
-		case L2CAP_INFO_RSP:
-			err = l2cap_information_rsp(conn, &cmd, data);
-			break;
-
-		default:
-			BT_ERR("Unknown signaling command 0x%2.2x", cmd.code);
-			err = -EINVAL;
-			break;
-		}
-
-		if (err) {
-			struct l2cap_cmd_rej rej;
-			BT_DBG("error %d", err);
-
-			/* FIXME: Map err to a valid reason */
-			rej.reason = cpu_to_le16(0);
-			l2cap_send_cmd(conn, cmd.ident, L2CAP_COMMAND_REJ, sizeof(rej), &rej);
-		}
-
-		data += cmd_len;
-		len  -= cmd_len;
-	}
-
-	kfree_skb(skb);
-}
-
-static int l2cap_check_fcs(struct l2cap_pinfo *pi,  struct sk_buff *skb)
-{
-	u16 our_fcs, rcv_fcs;
-	int hdr_size = L2CAP_HDR_SIZE + 2;
-
-	if (pi->fcs == L2CAP_FCS_CRC16) {
-		skb_trim(skb, skb->len - 2);
-		rcv_fcs = get_unaligned_le16(skb->data + skb->len);
-		our_fcs = crc16(0, skb->data - hdr_size, skb->len + hdr_size);
-
-		if (our_fcs != rcv_fcs)
-			return -EBADMSG;
-	}
-	return 0;
-}
-
-static inline void l2cap_send_i_or_rr_or_rnr(struct sock *sk)
-{
-	struct l2cap_pinfo *pi = l2cap_pi(sk);
-	u16 control = 0;
-
-	pi->frames_sent = 0;
-
-	control |= pi->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT;
-
-	if (pi->conn_state & L2CAP_CONN_LOCAL_BUSY) {
-		control |= L2CAP_SUPER_RCV_NOT_READY;
-		l2cap_send_sframe(pi, control);
-		pi->conn_state |= L2CAP_CONN_RNR_SENT;
-	}
-
-	if (pi->conn_state & L2CAP_CONN_REMOTE_BUSY)
-		l2cap_retransmit_frames(sk);
-
-	l2cap_ertm_send(sk);
-
-	if (!(pi->conn_state & L2CAP_CONN_LOCAL_BUSY) &&
-			pi->frames_sent == 0) {
-		control |= L2CAP_SUPER_RCV_READY;
-		l2cap_send_sframe(pi, control);
-	}
-}
-
-static int l2cap_add_to_srej_queue(struct sock *sk, struct sk_buff *skb, u8 tx_seq, u8 sar)
-{
-	struct sk_buff *next_skb;
-	struct l2cap_pinfo *pi = l2cap_pi(sk);
-	int tx_seq_offset, next_tx_seq_offset;
-
-	bt_cb(skb)->tx_seq = tx_seq;
-	bt_cb(skb)->sar = sar;
-
-	next_skb = skb_peek(SREJ_QUEUE(sk));
-	if (!next_skb) {
-		__skb_queue_tail(SREJ_QUEUE(sk), skb);
-		return 0;
-	}
-
-	tx_seq_offset = (tx_seq - pi->buffer_seq) % 64;
-	if (tx_seq_offset < 0)
-		tx_seq_offset += 64;
-
-	do {
-		if (bt_cb(next_skb)->tx_seq == tx_seq)
-			return -EINVAL;
-
-		next_tx_seq_offset = (bt_cb(next_skb)->tx_seq -
-						pi->buffer_seq) % 64;
-		if (next_tx_seq_offset < 0)
-			next_tx_seq_offset += 64;
-
-		if (next_tx_seq_offset > tx_seq_offset) {
-			__skb_queue_before(SREJ_QUEUE(sk), next_skb, skb);
-			return 0;
-		}
-
-		if (skb_queue_is_last(SREJ_QUEUE(sk), next_skb))
-			break;
-
-	} while ((next_skb = skb_queue_next(SREJ_QUEUE(sk), next_skb)));
-
-	__skb_queue_tail(SREJ_QUEUE(sk), skb);
-
-	return 0;
-}
-
-static int l2cap_ertm_reassembly_sdu(struct sock *sk, struct sk_buff *skb, u16 control)
-{
-	struct l2cap_pinfo *pi = l2cap_pi(sk);
-	struct sk_buff *_skb;
-	int err;
-
-	switch (control & L2CAP_CTRL_SAR) {
-	case L2CAP_SDU_UNSEGMENTED:
-		if (pi->conn_state & L2CAP_CONN_SAR_SDU)
-			goto drop;
-
-		err = sock_queue_rcv_skb(sk, skb);
-		if (!err)
-			return err;
-
-		break;
-
-	case L2CAP_SDU_START:
-		if (pi->conn_state & L2CAP_CONN_SAR_SDU)
-			goto drop;
-
-		pi->sdu_len = get_unaligned_le16(skb->data);
-
-		if (pi->sdu_len > pi->imtu)
-			goto disconnect;
-
-		pi->sdu = bt_skb_alloc(pi->sdu_len, GFP_ATOMIC);
-		if (!pi->sdu)
-			return -ENOMEM;
-
-		/* pull sdu_len bytes only after alloc, because of Local Busy
-		 * condition we have to be sure that this will be executed
-		 * only once, i.e., when alloc does not fail */
-		skb_pull(skb, 2);
-
-		memcpy(skb_put(pi->sdu, skb->len), skb->data, skb->len);
-
-		pi->conn_state |= L2CAP_CONN_SAR_SDU;
-		pi->partial_sdu_len = skb->len;
-		break;
-
-	case L2CAP_SDU_CONTINUE:
-		if (!(pi->conn_state & L2CAP_CONN_SAR_SDU))
-			goto disconnect;
-
-		if (!pi->sdu)
-			goto disconnect;
-
-		pi->partial_sdu_len += skb->len;
-		if (pi->partial_sdu_len > pi->sdu_len)
-			goto drop;
-
-		memcpy(skb_put(pi->sdu, skb->len), skb->data, skb->len);
-
-		break;
-
-	case L2CAP_SDU_END:
-		if (!(pi->conn_state & L2CAP_CONN_SAR_SDU))
-			goto disconnect;
-
-		if (!pi->sdu)
-			goto disconnect;
-
-		if (!(pi->conn_state & L2CAP_CONN_SAR_RETRY)) {
-			pi->partial_sdu_len += skb->len;
-
-			if (pi->partial_sdu_len > pi->imtu)
-				goto drop;
-
-			if (pi->partial_sdu_len != pi->sdu_len)
-				goto drop;
-
-			memcpy(skb_put(pi->sdu, skb->len), skb->data, skb->len);
-		}
-
-		_skb = skb_clone(pi->sdu, GFP_ATOMIC);
-		if (!_skb) {
-			pi->conn_state |= L2CAP_CONN_SAR_RETRY;
-			return -ENOMEM;
-		}
-
-		err = sock_queue_rcv_skb(sk, _skb);
-		if (err < 0) {
-			kfree_skb(_skb);
-			pi->conn_state |= L2CAP_CONN_SAR_RETRY;
-			return err;
-		}
-
-		pi->conn_state &= ~L2CAP_CONN_SAR_RETRY;
-		pi->conn_state &= ~L2CAP_CONN_SAR_SDU;
-
-		kfree_skb(pi->sdu);
-		break;
-	}
-
-	kfree_skb(skb);
-	return 0;
-
-drop:
-	kfree_skb(pi->sdu);
-	pi->sdu = NULL;
-
-disconnect:
-	l2cap_send_disconn_req(pi->conn, sk, ECONNRESET);
-	kfree_skb(skb);
-	return 0;
-}
-
-static int l2cap_try_push_rx_skb(struct sock *sk)
-{
-	struct l2cap_pinfo *pi = l2cap_pi(sk);
-	struct sk_buff *skb;
-	u16 control;
-	int err;
-
-	while ((skb = skb_dequeue(BUSY_QUEUE(sk)))) {
-		control = bt_cb(skb)->sar << L2CAP_CTRL_SAR_SHIFT;
-		err = l2cap_ertm_reassembly_sdu(sk, skb, control);
-		if (err < 0) {
-			skb_queue_head(BUSY_QUEUE(sk), skb);
-			return -EBUSY;
-		}
-
-		pi->buffer_seq = (pi->buffer_seq + 1) % 64;
-	}
-
-	if (!(pi->conn_state & L2CAP_CONN_RNR_SENT))
-		goto done;
-
-	control = pi->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT;
-	control |= L2CAP_SUPER_RCV_READY | L2CAP_CTRL_POLL;
-	l2cap_send_sframe(pi, control);
-	l2cap_pi(sk)->retry_count = 1;
-
-	del_timer(&pi->retrans_timer);
-	__mod_monitor_timer();
-
-	l2cap_pi(sk)->conn_state |= L2CAP_CONN_WAIT_F;
-
-done:
-	pi->conn_state &= ~L2CAP_CONN_LOCAL_BUSY;
-	pi->conn_state &= ~L2CAP_CONN_RNR_SENT;
-
-	BT_DBG("sk %p, Exit local busy", sk);
-
-	return 0;
-}
-
-static void l2cap_busy_work(struct work_struct *work)
-{
-	DECLARE_WAITQUEUE(wait, current);
-	struct l2cap_pinfo *pi =
-		container_of(work, struct l2cap_pinfo, busy_work);
-	struct sock *sk = (struct sock *)pi;
-	int n_tries = 0, timeo = HZ/5, err;
-	struct sk_buff *skb;
-
-	lock_sock(sk);
-
-	add_wait_queue(sk_sleep(sk), &wait);
-	while ((skb = skb_peek(BUSY_QUEUE(sk)))) {
-		set_current_state(TASK_INTERRUPTIBLE);
-
-		if (n_tries++ > L2CAP_LOCAL_BUSY_TRIES) {
-			err = -EBUSY;
-			l2cap_send_disconn_req(pi->conn, sk, EBUSY);
-			break;
-		}
-
-		if (!timeo)
-			timeo = HZ/5;
-
-		if (signal_pending(current)) {
-			err = sock_intr_errno(timeo);
-			break;
-		}
-
-		release_sock(sk);
-		timeo = schedule_timeout(timeo);
-		lock_sock(sk);
-
-		err = sock_error(sk);
-		if (err)
-			break;
-
-		if (l2cap_try_push_rx_skb(sk) == 0)
-			break;
-	}
-
-	set_current_state(TASK_RUNNING);
-	remove_wait_queue(sk_sleep(sk), &wait);
-
-	release_sock(sk);
-}
-
-static int l2cap_push_rx_skb(struct sock *sk, struct sk_buff *skb, u16 control)
-{
-	struct l2cap_pinfo *pi = l2cap_pi(sk);
-	int sctrl, err;
-
-	if (pi->conn_state & L2CAP_CONN_LOCAL_BUSY) {
-		bt_cb(skb)->sar = control >> L2CAP_CTRL_SAR_SHIFT;
-		__skb_queue_tail(BUSY_QUEUE(sk), skb);
-		return l2cap_try_push_rx_skb(sk);
-
-
-	}
-
-	err = l2cap_ertm_reassembly_sdu(sk, skb, control);
-	if (err >= 0) {
-		pi->buffer_seq = (pi->buffer_seq + 1) % 64;
-		return err;
-	}
-
-	/* Busy Condition */
-	BT_DBG("sk %p, Enter local busy", sk);
-
-	pi->conn_state |= L2CAP_CONN_LOCAL_BUSY;
-	bt_cb(skb)->sar = control >> L2CAP_CTRL_SAR_SHIFT;
-	__skb_queue_tail(BUSY_QUEUE(sk), skb);
-
-	sctrl = pi->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT;
-	sctrl |= L2CAP_SUPER_RCV_NOT_READY;
-	l2cap_send_sframe(pi, sctrl);
-
-	pi->conn_state |= L2CAP_CONN_RNR_SENT;
-
-	del_timer(&pi->ack_timer);
-
-	queue_work(_busy_wq, &pi->busy_work);
-
-	return err;
-}
-
-static int l2cap_streaming_reassembly_sdu(struct sock *sk, struct sk_buff *skb, u16 control)
-{
-	struct l2cap_pinfo *pi = l2cap_pi(sk);
-	struct sk_buff *_skb;
-	int err = -EINVAL;
-
-	/*
-	 * TODO: We have to notify the userland if some data is lost with the
-	 * Streaming Mode.
-	 */
-
-	switch (control & L2CAP_CTRL_SAR) {
-	case L2CAP_SDU_UNSEGMENTED:
-		if (pi->conn_state & L2CAP_CONN_SAR_SDU) {
-			kfree_skb(pi->sdu);
-			break;
-		}
-
-		err = sock_queue_rcv_skb(sk, skb);
-		if (!err)
-			return 0;
-
-		break;
-
-	case L2CAP_SDU_START:
-		if (pi->conn_state & L2CAP_CONN_SAR_SDU) {
-			kfree_skb(pi->sdu);
-			break;
-		}
-
-		pi->sdu_len = get_unaligned_le16(skb->data);
-		skb_pull(skb, 2);
-
-		if (pi->sdu_len > pi->imtu) {
-			err = -EMSGSIZE;
-			break;
-		}
-
-		pi->sdu = bt_skb_alloc(pi->sdu_len, GFP_ATOMIC);
-		if (!pi->sdu) {
-			err = -ENOMEM;
-			break;
-		}
-
-		memcpy(skb_put(pi->sdu, skb->len), skb->data, skb->len);
-
-		pi->conn_state |= L2CAP_CONN_SAR_SDU;
-		pi->partial_sdu_len = skb->len;
-		err = 0;
-		break;
-
-	case L2CAP_SDU_CONTINUE:
-		if (!(pi->conn_state & L2CAP_CONN_SAR_SDU))
-			break;
-
-		memcpy(skb_put(pi->sdu, skb->len), skb->data, skb->len);
-
-		pi->partial_sdu_len += skb->len;
-		if (pi->partial_sdu_len > pi->sdu_len)
-			kfree_skb(pi->sdu);
-		else
-			err = 0;
-
-		break;
-
-	case L2CAP_SDU_END:
-		if (!(pi->conn_state & L2CAP_CONN_SAR_SDU))
-			break;
-
-		memcpy(skb_put(pi->sdu, skb->len), skb->data, skb->len);
-
-		pi->conn_state &= ~L2CAP_CONN_SAR_SDU;
-		pi->partial_sdu_len += skb->len;
-
-		if (pi->partial_sdu_len > pi->imtu)
-			goto drop;
-
-		if (pi->partial_sdu_len == pi->sdu_len) {
-			_skb = skb_clone(pi->sdu, GFP_ATOMIC);
-			err = sock_queue_rcv_skb(sk, _skb);
-			if (err < 0)
-				kfree_skb(_skb);
-		}
-		err = 0;
-
-drop:
-		kfree_skb(pi->sdu);
-		break;
-	}
-
-	kfree_skb(skb);
-	return err;
-}
-
-static void l2cap_check_srej_gap(struct sock *sk, u8 tx_seq)
-{
-	struct sk_buff *skb;
-	u16 control;
-
-	while ((skb = skb_peek(SREJ_QUEUE(sk)))) {
-		if (bt_cb(skb)->tx_seq != tx_seq)
-			break;
-
-		skb = skb_dequeue(SREJ_QUEUE(sk));
-		control = bt_cb(skb)->sar << L2CAP_CTRL_SAR_SHIFT;
-		l2cap_ertm_reassembly_sdu(sk, skb, control);
-		l2cap_pi(sk)->buffer_seq_srej =
-			(l2cap_pi(sk)->buffer_seq_srej + 1) % 64;
-		tx_seq = (tx_seq + 1) % 64;
-	}
-}
-
-static void l2cap_resend_srejframe(struct sock *sk, u8 tx_seq)
-{
-	struct l2cap_pinfo *pi = l2cap_pi(sk);
-	struct srej_list *l, *tmp;
-	u16 control;
-
-	list_for_each_entry_safe(l, tmp, SREJ_LIST(sk), list) {
-		if (l->tx_seq == tx_seq) {
-			list_del(&l->list);
-			kfree(l);
-			return;
-		}
-		control = L2CAP_SUPER_SELECT_REJECT;
-		control |= l->tx_seq << L2CAP_CTRL_REQSEQ_SHIFT;
-		l2cap_send_sframe(pi, control);
-		list_del(&l->list);
-		list_add_tail(&l->list, SREJ_LIST(sk));
-	}
-}
-
-static void l2cap_send_srejframe(struct sock *sk, u8 tx_seq)
-{
-	struct l2cap_pinfo *pi = l2cap_pi(sk);
-	struct srej_list *new;
-	u16 control;
-
-	while (tx_seq != pi->expected_tx_seq) {
-		control = L2CAP_SUPER_SELECT_REJECT;
-		control |= pi->expected_tx_seq << L2CAP_CTRL_REQSEQ_SHIFT;
-		l2cap_send_sframe(pi, control);
-
-		new = kzalloc(sizeof(struct srej_list), GFP_ATOMIC);
-		new->tx_seq = pi->expected_tx_seq;
-		pi->expected_tx_seq = (pi->expected_tx_seq + 1) % 64;
-		list_add_tail(&new->list, SREJ_LIST(sk));
-	}
-	pi->expected_tx_seq = (pi->expected_tx_seq + 1) % 64;
-}
-
-static inline int l2cap_data_channel_iframe(struct sock *sk, u16 rx_control, struct sk_buff *skb)
-{
-	struct l2cap_pinfo *pi = l2cap_pi(sk);
-	u8 tx_seq = __get_txseq(rx_control);
-	u8 req_seq = __get_reqseq(rx_control);
-	u8 sar = rx_control >> L2CAP_CTRL_SAR_SHIFT;
-	int tx_seq_offset, expected_tx_seq_offset;
-	int num_to_ack = (pi->tx_win/6) + 1;
-	int err = 0;
-
-	BT_DBG("sk %p len %d tx_seq %d rx_control 0x%4.4x", sk, skb->len, tx_seq,
-								rx_control);
-
-	if (L2CAP_CTRL_FINAL & rx_control &&
-			l2cap_pi(sk)->conn_state & L2CAP_CONN_WAIT_F) {
-		del_timer(&pi->monitor_timer);
-		if (pi->unacked_frames > 0)
-			__mod_retrans_timer();
-		pi->conn_state &= ~L2CAP_CONN_WAIT_F;
-	}
-
-	pi->expected_ack_seq = req_seq;
-	l2cap_drop_acked_frames(sk);
-
-	if (tx_seq == pi->expected_tx_seq)
-		goto expected;
-
-	tx_seq_offset = (tx_seq - pi->buffer_seq) % 64;
-	if (tx_seq_offset < 0)
-		tx_seq_offset += 64;
-
-	/* invalid tx_seq */
-	if (tx_seq_offset >= pi->tx_win) {
-		l2cap_send_disconn_req(pi->conn, sk, ECONNRESET);
-		goto drop;
-	}
-
-	if (pi->conn_state == L2CAP_CONN_LOCAL_BUSY)
-		goto drop;
-
-	if (pi->conn_state & L2CAP_CONN_SREJ_SENT) {
-		struct srej_list *first;
-
-		first = list_first_entry(SREJ_LIST(sk),
-				struct srej_list, list);
-		if (tx_seq == first->tx_seq) {
-			l2cap_add_to_srej_queue(sk, skb, tx_seq, sar);
-			l2cap_check_srej_gap(sk, tx_seq);
-
-			list_del(&first->list);
-			kfree(first);
-
-			if (list_empty(SREJ_LIST(sk))) {
-				pi->buffer_seq = pi->buffer_seq_srej;
-				pi->conn_state &= ~L2CAP_CONN_SREJ_SENT;
-				l2cap_send_ack(pi);
-				BT_DBG("sk %p, Exit SREJ_SENT", sk);
-			}
-		} else {
-			struct srej_list *l;
-
-			/* duplicated tx_seq */
-			if (l2cap_add_to_srej_queue(sk, skb, tx_seq, sar) < 0)
-				goto drop;
-
-			list_for_each_entry(l, SREJ_LIST(sk), list) {
-				if (l->tx_seq == tx_seq) {
-					l2cap_resend_srejframe(sk, tx_seq);
-					return 0;
-				}
-			}
-			l2cap_send_srejframe(sk, tx_seq);
-		}
-	} else {
-		expected_tx_seq_offset =
-			(pi->expected_tx_seq - pi->buffer_seq) % 64;
-		if (expected_tx_seq_offset < 0)
-			expected_tx_seq_offset += 64;
-
-		/* duplicated tx_seq */
-		if (tx_seq_offset < expected_tx_seq_offset)
-			goto drop;
-
-		pi->conn_state |= L2CAP_CONN_SREJ_SENT;
-
-		BT_DBG("sk %p, Enter SREJ", sk);
-
-		INIT_LIST_HEAD(SREJ_LIST(sk));
-		pi->buffer_seq_srej = pi->buffer_seq;
-
-		__skb_queue_head_init(SREJ_QUEUE(sk));
-		__skb_queue_head_init(BUSY_QUEUE(sk));
-		l2cap_add_to_srej_queue(sk, skb, tx_seq, sar);
-
-		pi->conn_state |= L2CAP_CONN_SEND_PBIT;
-
-		l2cap_send_srejframe(sk, tx_seq);
-
-		del_timer(&pi->ack_timer);
-	}
-	return 0;
-
-expected:
-	pi->expected_tx_seq = (pi->expected_tx_seq + 1) % 64;
-
-	if (pi->conn_state & L2CAP_CONN_SREJ_SENT) {
-		bt_cb(skb)->tx_seq = tx_seq;
-		bt_cb(skb)->sar = sar;
-		__skb_queue_tail(SREJ_QUEUE(sk), skb);
-		return 0;
-	}
-
-	err = l2cap_push_rx_skb(sk, skb, rx_control);
-	if (err < 0)
-		return 0;
-
-	if (rx_control & L2CAP_CTRL_FINAL) {
-		if (pi->conn_state & L2CAP_CONN_REJ_ACT)
-			pi->conn_state &= ~L2CAP_CONN_REJ_ACT;
-		else
-			l2cap_retransmit_frames(sk);
-	}
-
-	__mod_ack_timer();
-
-	pi->num_acked = (pi->num_acked + 1) % num_to_ack;
-	if (pi->num_acked == num_to_ack - 1)
-		l2cap_send_ack(pi);
-
-	return 0;
-
-drop:
-	kfree_skb(skb);
-	return 0;
-}
-
-static inline void l2cap_data_channel_rrframe(struct sock *sk, u16 rx_control)
-{
-	struct l2cap_pinfo *pi = l2cap_pi(sk);
-
-	BT_DBG("sk %p, req_seq %d ctrl 0x%4.4x", sk, __get_reqseq(rx_control),
-						rx_control);
-
-	pi->expected_ack_seq = __get_reqseq(rx_control);
-	l2cap_drop_acked_frames(sk);
-
-	if (rx_control & L2CAP_CTRL_POLL) {
-		pi->conn_state |= L2CAP_CONN_SEND_FBIT;
-		if (pi->conn_state & L2CAP_CONN_SREJ_SENT) {
-			if ((pi->conn_state & L2CAP_CONN_REMOTE_BUSY) &&
-					(pi->unacked_frames > 0))
-				__mod_retrans_timer();
-
-			pi->conn_state &= ~L2CAP_CONN_REMOTE_BUSY;
-			l2cap_send_srejtail(sk);
-		} else {
-			l2cap_send_i_or_rr_or_rnr(sk);
-		}
-
-	} else if (rx_control & L2CAP_CTRL_FINAL) {
-		pi->conn_state &= ~L2CAP_CONN_REMOTE_BUSY;
-
-		if (pi->conn_state & L2CAP_CONN_REJ_ACT)
-			pi->conn_state &= ~L2CAP_CONN_REJ_ACT;
-		else
-			l2cap_retransmit_frames(sk);
-
-	} else {
-		if ((pi->conn_state & L2CAP_CONN_REMOTE_BUSY) &&
-				(pi->unacked_frames > 0))
-			__mod_retrans_timer();
-
-		pi->conn_state &= ~L2CAP_CONN_REMOTE_BUSY;
-		if (pi->conn_state & L2CAP_CONN_SREJ_SENT)
-			l2cap_send_ack(pi);
-		else
-			l2cap_ertm_send(sk);
-	}
-}
-
-static inline void l2cap_data_channel_rejframe(struct sock *sk, u16 rx_control)
-{
-	struct l2cap_pinfo *pi = l2cap_pi(sk);
-	u8 tx_seq = __get_reqseq(rx_control);
-
-	BT_DBG("sk %p, req_seq %d ctrl 0x%4.4x", sk, tx_seq, rx_control);
-
-	pi->conn_state &= ~L2CAP_CONN_REMOTE_BUSY;
-
-	pi->expected_ack_seq = tx_seq;
-	l2cap_drop_acked_frames(sk);
-
-	if (rx_control & L2CAP_CTRL_FINAL) {
-		if (pi->conn_state & L2CAP_CONN_REJ_ACT)
-			pi->conn_state &= ~L2CAP_CONN_REJ_ACT;
-		else
-			l2cap_retransmit_frames(sk);
-	} else {
-		l2cap_retransmit_frames(sk);
-
-		if (pi->conn_state & L2CAP_CONN_WAIT_F)
-			pi->conn_state |= L2CAP_CONN_REJ_ACT;
-	}
-}
-static inline void l2cap_data_channel_srejframe(struct sock *sk, u16 rx_control)
-{
-	struct l2cap_pinfo *pi = l2cap_pi(sk);
-	u8 tx_seq = __get_reqseq(rx_control);
-
-	BT_DBG("sk %p, req_seq %d ctrl 0x%4.4x", sk, tx_seq, rx_control);
-
-	pi->conn_state &= ~L2CAP_CONN_REMOTE_BUSY;
-
-	if (rx_control & L2CAP_CTRL_POLL) {
-		pi->expected_ack_seq = tx_seq;
-		l2cap_drop_acked_frames(sk);
-
-		pi->conn_state |= L2CAP_CONN_SEND_FBIT;
-		l2cap_retransmit_one_frame(sk, tx_seq);
-
-		l2cap_ertm_send(sk);
-
-		if (pi->conn_state & L2CAP_CONN_WAIT_F) {
-			pi->srej_save_reqseq = tx_seq;
-			pi->conn_state |= L2CAP_CONN_SREJ_ACT;
-		}
-	} else if (rx_control & L2CAP_CTRL_FINAL) {
-		if ((pi->conn_state & L2CAP_CONN_SREJ_ACT) &&
-				pi->srej_save_reqseq == tx_seq)
-			pi->conn_state &= ~L2CAP_CONN_SREJ_ACT;
-		else
-			l2cap_retransmit_one_frame(sk, tx_seq);
-	} else {
-		l2cap_retransmit_one_frame(sk, tx_seq);
-		if (pi->conn_state & L2CAP_CONN_WAIT_F) {
-			pi->srej_save_reqseq = tx_seq;
-			pi->conn_state |= L2CAP_CONN_SREJ_ACT;
-		}
-	}
-}
-
-static inline void l2cap_data_channel_rnrframe(struct sock *sk, u16 rx_control)
-{
-	struct l2cap_pinfo *pi = l2cap_pi(sk);
-	u8 tx_seq = __get_reqseq(rx_control);
-
-	BT_DBG("sk %p, req_seq %d ctrl 0x%4.4x", sk, tx_seq, rx_control);
-
-	pi->conn_state |= L2CAP_CONN_REMOTE_BUSY;
-	pi->expected_ack_seq = tx_seq;
-	l2cap_drop_acked_frames(sk);
-
-	if (rx_control & L2CAP_CTRL_POLL)
-		pi->conn_state |= L2CAP_CONN_SEND_FBIT;
-
-	if (!(pi->conn_state & L2CAP_CONN_SREJ_SENT)) {
-		del_timer(&pi->retrans_timer);
-		if (rx_control & L2CAP_CTRL_POLL)
-			l2cap_send_rr_or_rnr(pi, L2CAP_CTRL_FINAL);
-		return;
-	}
-
-	if (rx_control & L2CAP_CTRL_POLL)
-		l2cap_send_srejtail(sk);
-	else
-		l2cap_send_sframe(pi, L2CAP_SUPER_RCV_READY);
-}
-
-static inline int l2cap_data_channel_sframe(struct sock *sk, u16 rx_control, struct sk_buff *skb)
-{
-	BT_DBG("sk %p rx_control 0x%4.4x len %d", sk, rx_control, skb->len);
-
-	if (L2CAP_CTRL_FINAL & rx_control &&
-			l2cap_pi(sk)->conn_state & L2CAP_CONN_WAIT_F) {
-		del_timer(&l2cap_pi(sk)->monitor_timer);
-		if (l2cap_pi(sk)->unacked_frames > 0)
-			__mod_retrans_timer();
-		l2cap_pi(sk)->conn_state &= ~L2CAP_CONN_WAIT_F;
-	}
-
-	switch (rx_control & L2CAP_CTRL_SUPERVISE) {
-	case L2CAP_SUPER_RCV_READY:
-		l2cap_data_channel_rrframe(sk, rx_control);
-		break;
-
-	case L2CAP_SUPER_REJECT:
-		l2cap_data_channel_rejframe(sk, rx_control);
-		break;
-
-	case L2CAP_SUPER_SELECT_REJECT:
-		l2cap_data_channel_srejframe(sk, rx_control);
-		break;
-
-	case L2CAP_SUPER_RCV_NOT_READY:
-		l2cap_data_channel_rnrframe(sk, rx_control);
-		break;
-	}
-
-	kfree_skb(skb);
-	return 0;
-}
-
-static int l2cap_ertm_data_rcv(struct sock *sk, struct sk_buff *skb)
-{
-	struct l2cap_pinfo *pi = l2cap_pi(sk);
-	u16 control;
-	u8 req_seq;
-	int len, next_tx_seq_offset, req_seq_offset;
-
-	control = get_unaligned_le16(skb->data);
-	skb_pull(skb, 2);
-	len = skb->len;
-
-	/*
-	 * We can just drop the corrupted I-frame here.
-	 * Receiver will miss it and start proper recovery
-	 * procedures and ask retransmission.
-	 */
-	if (l2cap_check_fcs(pi, skb))
-		goto drop;
-
-	if (__is_sar_start(control) && __is_iframe(control))
-		len -= 2;
-
-	if (pi->fcs == L2CAP_FCS_CRC16)
-		len -= 2;
-
-	if (len > pi->mps) {
-		l2cap_send_disconn_req(pi->conn, sk, ECONNRESET);
-		goto drop;
-	}
-
-	req_seq = __get_reqseq(control);
-	req_seq_offset = (req_seq - pi->expected_ack_seq) % 64;
-	if (req_seq_offset < 0)
-		req_seq_offset += 64;
-
-	next_tx_seq_offset =
-		(pi->next_tx_seq - pi->expected_ack_seq) % 64;
-	if (next_tx_seq_offset < 0)
-		next_tx_seq_offset += 64;
-
-	/* check for invalid req-seq */
-	if (req_seq_offset > next_tx_seq_offset) {
-		l2cap_send_disconn_req(pi->conn, sk, ECONNRESET);
-		goto drop;
-	}
-
-	if (__is_iframe(control)) {
-		if (len < 0) {
-			l2cap_send_disconn_req(pi->conn, sk, ECONNRESET);
-			goto drop;
-		}
-
-		l2cap_data_channel_iframe(sk, control, skb);
-	} else {
-		if (len != 0) {
-			BT_ERR("%d", len);
-			l2cap_send_disconn_req(pi->conn, sk, ECONNRESET);
-			goto drop;
-		}
-
-		l2cap_data_channel_sframe(sk, control, skb);
-	}
-
-	return 0;
-
-drop:
-	kfree_skb(skb);
-	return 0;
-}
-
-static inline int l2cap_data_channel(struct l2cap_conn *conn, u16 cid, struct sk_buff *skb)
-{
-	struct sock *sk;
-	struct l2cap_pinfo *pi;
-	u16 control;
-	u8 tx_seq;
-	int len;
-
-	sk = l2cap_get_chan_by_scid(&conn->chan_list, cid);
-	if (!sk) {
-		BT_DBG("unknown cid 0x%4.4x", cid);
-		goto drop;
-	}
-
-	pi = l2cap_pi(sk);
-
-	BT_DBG("sk %p, len %d", sk, skb->len);
-
-	if (sk->sk_state != BT_CONNECTED)
-		goto drop;
-
-	switch (pi->mode) {
-	case L2CAP_MODE_BASIC:
-		/* If socket recv buffers overflows we drop data here
-		 * which is *bad* because L2CAP has to be reliable.
-		 * But we don't have any other choice. L2CAP doesn't
-		 * provide flow control mechanism. */
-
-		if (pi->imtu < skb->len)
-			goto drop;
-
-		if (!sock_queue_rcv_skb(sk, skb))
-			goto done;
-		break;
-
-	case L2CAP_MODE_ERTM:
-		if (!sock_owned_by_user(sk)) {
-			l2cap_ertm_data_rcv(sk, skb);
-		} else {
-			if (sk_add_backlog(sk, skb))
-				goto drop;
-		}
-
-		goto done;
-
-	case L2CAP_MODE_STREAMING:
-		control = get_unaligned_le16(skb->data);
-		skb_pull(skb, 2);
-		len = skb->len;
-
-		if (l2cap_check_fcs(pi, skb))
-			goto drop;
-
-		if (__is_sar_start(control))
-			len -= 2;
-
-		if (pi->fcs == L2CAP_FCS_CRC16)
-			len -= 2;
-
-		if (len > pi->mps || len < 0 || __is_sframe(control))
-			goto drop;
-
-		tx_seq = __get_txseq(control);
-
-		if (pi->expected_tx_seq == tx_seq)
-			pi->expected_tx_seq = (pi->expected_tx_seq + 1) % 64;
-		else
-			pi->expected_tx_seq = (tx_seq + 1) % 64;
-
-		l2cap_streaming_reassembly_sdu(sk, skb, control);
-
-		goto done;
-
-	default:
-		BT_DBG("sk %p: bad mode 0x%2.2x", sk, pi->mode);
-		break;
-	}
-
-drop:
-	kfree_skb(skb);
-
-done:
-	if (sk)
-		bh_unlock_sock(sk);
-
-	return 0;
-}
-
-static inline int l2cap_conless_channel(struct l2cap_conn *conn, __le16 psm, struct sk_buff *skb)
-{
-	struct sock *sk;
-
-	sk = l2cap_get_sock_by_psm(0, psm, conn->src);
-	if (!sk)
-		goto drop;
-
-	bh_lock_sock(sk);
-
-	BT_DBG("sk %p, len %d", sk, skb->len);
-
-	if (sk->sk_state != BT_BOUND && sk->sk_state != BT_CONNECTED)
-		goto drop;
-
-	if (l2cap_pi(sk)->imtu < skb->len)
-		goto drop;
-
-	if (!sock_queue_rcv_skb(sk, skb))
-		goto done;
-
-drop:
-	kfree_skb(skb);
-
-done:
-	if (sk)
-		bh_unlock_sock(sk);
-	return 0;
-}
-
-static void l2cap_recv_frame(struct l2cap_conn *conn, struct sk_buff *skb)
-{
-	struct l2cap_hdr *lh = (void *) skb->data;
-	u16 cid, len;
-	__le16 psm;
-
-	skb_pull(skb, L2CAP_HDR_SIZE);
-	cid = __le16_to_cpu(lh->cid);
-	len = __le16_to_cpu(lh->len);
-
-	if (len != skb->len) {
-		kfree_skb(skb);
-		return;
-	}
-
-	BT_DBG("len %d, cid 0x%4.4x", len, cid);
-
-	switch (cid) {
-	case L2CAP_CID_SIGNALING:
-		l2cap_sig_channel(conn, skb);
-		break;
-
-	case L2CAP_CID_CONN_LESS:
-		psm = get_unaligned_le16(skb->data);
-		skb_pull(skb, 2);
-		l2cap_conless_channel(conn, psm, skb);
-		break;
-
-	default:
-		l2cap_data_channel(conn, cid, skb);
-		break;
-	}
-}
-
-/* ---- L2CAP interface with lower layer (HCI) ---- */
-
-static int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type)
-{
-	int exact = 0, lm1 = 0, lm2 = 0;
-	register struct sock *sk;
-	struct hlist_node *node;
-
-	if (type != ACL_LINK)
-		return -EINVAL;
-
-	BT_DBG("hdev %s, bdaddr %s", hdev->name, batostr(bdaddr));
-
-	/* Find listening sockets and check their link_mode */
-	read_lock(&l2cap_sk_list.lock);
-	sk_for_each(sk, node, &l2cap_sk_list.head) {
-		if (sk->sk_state != BT_LISTEN)
-			continue;
-
-		if (!bacmp(&bt_sk(sk)->src, &hdev->bdaddr)) {
-			lm1 |= HCI_LM_ACCEPT;
-			if (l2cap_pi(sk)->role_switch)
-				lm1 |= HCI_LM_MASTER;
-			exact++;
-		} else if (!bacmp(&bt_sk(sk)->src, BDADDR_ANY)) {
-			lm2 |= HCI_LM_ACCEPT;
-			if (l2cap_pi(sk)->role_switch)
-				lm2 |= HCI_LM_MASTER;
-		}
-	}
-	read_unlock(&l2cap_sk_list.lock);
-
-	return exact ? lm1 : lm2;
-}
-
-static int l2cap_connect_cfm(struct hci_conn *hcon, u8 status)
-{
-	struct l2cap_conn *conn;
-
-	BT_DBG("hcon %p bdaddr %s status %d", hcon, batostr(&hcon->dst), status);
-
-	if (hcon->type != ACL_LINK)
-		return -EINVAL;
-
-	if (!status) {
-		conn = l2cap_conn_add(hcon, status);
-		if (conn)
-			l2cap_conn_ready(conn);
-	} else
-		l2cap_conn_del(hcon, bt_err(status));
-
-	return 0;
-}
-
-static int l2cap_disconn_ind(struct hci_conn *hcon)
-{
-	struct l2cap_conn *conn = hcon->l2cap_data;
-
-	BT_DBG("hcon %p", hcon);
-
-	if (hcon->type != ACL_LINK || !conn)
-		return 0x13;
-
-	return conn->disc_reason;
-}
-
-static int l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason)
-{
-	BT_DBG("hcon %p reason %d", hcon, reason);
-
-	if (hcon->type != ACL_LINK)
-		return -EINVAL;
-
-	l2cap_conn_del(hcon, bt_err(reason));
-
-	return 0;
-}
-
-static inline void l2cap_check_encryption(struct sock *sk, u8 encrypt)
-{
-	if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM)
-		return;
-
-	if (encrypt == 0x00) {
-		if (l2cap_pi(sk)->sec_level == BT_SECURITY_MEDIUM) {
-			l2cap_sock_clear_timer(sk);
-			l2cap_sock_set_timer(sk, HZ * 5);
-		} else if (l2cap_pi(sk)->sec_level == BT_SECURITY_HIGH)
-			__l2cap_sock_close(sk, ECONNREFUSED);
-	} else {
-		if (l2cap_pi(sk)->sec_level == BT_SECURITY_MEDIUM)
-			l2cap_sock_clear_timer(sk);
-	}
-}
-
-static int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt)
-{
-	struct l2cap_chan_list *l;
-	struct l2cap_conn *conn = hcon->l2cap_data;
-	struct sock *sk;
-
-	if (!conn)
-		return 0;
-
-	l = &conn->chan_list;
-
-	BT_DBG("conn %p", conn);
-
-	read_lock(&l->lock);
-
-	for (sk = l->head; sk; sk = l2cap_pi(sk)->next_c) {
-		bh_lock_sock(sk);
-
-		if (l2cap_pi(sk)->conf_state & L2CAP_CONF_CONNECT_PEND) {
-			bh_unlock_sock(sk);
-			continue;
-		}
-
-		if (!status && (sk->sk_state == BT_CONNECTED ||
-						sk->sk_state == BT_CONFIG)) {
-			l2cap_check_encryption(sk, encrypt);
-			bh_unlock_sock(sk);
-			continue;
-		}
-
-		if (sk->sk_state == BT_CONNECT) {
-			if (!status) {
-				struct l2cap_conn_req req;
-				req.scid = cpu_to_le16(l2cap_pi(sk)->scid);
-				req.psm  = l2cap_pi(sk)->psm;
-
-				l2cap_pi(sk)->ident = l2cap_get_ident(conn);
-				l2cap_pi(sk)->conf_state |= L2CAP_CONF_CONNECT_PEND;
-
-				l2cap_send_cmd(conn, l2cap_pi(sk)->ident,
-					L2CAP_CONN_REQ, sizeof(req), &req);
-			} else {
-				l2cap_sock_clear_timer(sk);
-				l2cap_sock_set_timer(sk, HZ / 10);
-			}
-		} else if (sk->sk_state == BT_CONNECT2) {
-			struct l2cap_conn_rsp rsp;
-			__u16 result;
-
-			if (!status) {
-				sk->sk_state = BT_CONFIG;
-				result = L2CAP_CR_SUCCESS;
-			} else {
-				sk->sk_state = BT_DISCONN;
-				l2cap_sock_set_timer(sk, HZ / 10);
-				result = L2CAP_CR_SEC_BLOCK;
-			}
-
-			rsp.scid   = cpu_to_le16(l2cap_pi(sk)->dcid);
-			rsp.dcid   = cpu_to_le16(l2cap_pi(sk)->scid);
-			rsp.result = cpu_to_le16(result);
-			rsp.status = cpu_to_le16(L2CAP_CS_NO_INFO);
-			l2cap_send_cmd(conn, l2cap_pi(sk)->ident,
-					L2CAP_CONN_RSP, sizeof(rsp), &rsp);
-		}
-
-		bh_unlock_sock(sk);
-	}
-
-	read_unlock(&l->lock);
-
-	return 0;
-}
-
-static int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags)
-{
-	struct l2cap_conn *conn = hcon->l2cap_data;
-
-	if (!conn)
-		conn = l2cap_conn_add(hcon, 0);
-
-	if (!conn)
-		goto drop;
-
-	BT_DBG("conn %p len %d flags 0x%x", conn, skb->len, flags);
-
-	if (!(flags & ACL_CONT)) {
-		struct l2cap_hdr *hdr;
-		struct sock *sk;
-		u16 cid;
-		int len;
-
-		if (conn->rx_len) {
-			BT_ERR("Unexpected start frame (len %d)", skb->len);
-			kfree_skb(conn->rx_skb);
-			conn->rx_skb = NULL;
-			conn->rx_len = 0;
-			l2cap_conn_unreliable(conn, ECOMM);
-		}
-
-		/* Start fragment always begin with Basic L2CAP header */
-		if (skb->len < L2CAP_HDR_SIZE) {
-			BT_ERR("Frame is too short (len %d)", skb->len);
-			l2cap_conn_unreliable(conn, ECOMM);
-			goto drop;
-		}
-
-		hdr = (struct l2cap_hdr *) skb->data;
-		len = __le16_to_cpu(hdr->len) + L2CAP_HDR_SIZE;
-		cid = __le16_to_cpu(hdr->cid);
-
-		if (len == skb->len) {
-			/* Complete frame received */
-			l2cap_recv_frame(conn, skb);
-			return 0;
-		}
-
-		BT_DBG("Start: total len %d, frag len %d", len, skb->len);
-
-		if (skb->len > len) {
-			BT_ERR("Frame is too long (len %d, expected len %d)",
-				skb->len, len);
-			l2cap_conn_unreliable(conn, ECOMM);
-			goto drop;
-		}
-
-		sk = l2cap_get_chan_by_scid(&conn->chan_list, cid);
-
-		if (sk && l2cap_pi(sk)->imtu < len - L2CAP_HDR_SIZE) {
-			BT_ERR("Frame exceeding recv MTU (len %d, MTU %d)",
-					len, l2cap_pi(sk)->imtu);
-			bh_unlock_sock(sk);
-			l2cap_conn_unreliable(conn, ECOMM);
-			goto drop;
-		}
-
-		if (sk)
-			bh_unlock_sock(sk);
-
-		/* Allocate skb for the complete frame (with header) */
-		conn->rx_skb = bt_skb_alloc(len, GFP_ATOMIC);
-		if (!conn->rx_skb)
-			goto drop;
-
-		skb_copy_from_linear_data(skb, skb_put(conn->rx_skb, skb->len),
-								skb->len);
-		conn->rx_len = len - skb->len;
-	} else {
-		BT_DBG("Cont: frag len %d (expecting %d)", skb->len, conn->rx_len);
-
-		if (!conn->rx_len) {
-			BT_ERR("Unexpected continuation frame (len %d)", skb->len);
-			l2cap_conn_unreliable(conn, ECOMM);
-			goto drop;
-		}
-
-		if (skb->len > conn->rx_len) {
-			BT_ERR("Fragment is too long (len %d, expected %d)",
-					skb->len, conn->rx_len);
-			kfree_skb(conn->rx_skb);
-			conn->rx_skb = NULL;
-			conn->rx_len = 0;
-			l2cap_conn_unreliable(conn, ECOMM);
-			goto drop;
-		}
-
-		skb_copy_from_linear_data(skb, skb_put(conn->rx_skb, skb->len),
-								skb->len);
-		conn->rx_len -= skb->len;
-
-		if (!conn->rx_len) {
-			/* Complete frame received */
-			l2cap_recv_frame(conn, conn->rx_skb);
-			conn->rx_skb = NULL;
-		}
-	}
-
-drop:
-	kfree_skb(skb);
-	return 0;
-}
-
-static int l2cap_debugfs_show(struct seq_file *f, void *p)
-{
-	struct sock *sk;
-	struct hlist_node *node;
-
-	read_lock_bh(&l2cap_sk_list.lock);
-
-	sk_for_each(sk, node, &l2cap_sk_list.head) {
-		struct l2cap_pinfo *pi = l2cap_pi(sk);
-
-		seq_printf(f, "%s %s %d %d 0x%4.4x 0x%4.4x %d %d %d\n",
-					batostr(&bt_sk(sk)->src),
-					batostr(&bt_sk(sk)->dst),
-					sk->sk_state, __le16_to_cpu(pi->psm),
-					pi->scid, pi->dcid,
-					pi->imtu, pi->omtu, pi->sec_level);
-	}
-
-	read_unlock_bh(&l2cap_sk_list.lock);
-
-	return 0;
-}
-
-static int l2cap_debugfs_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, l2cap_debugfs_show, inode->i_private);
-}
-
-static const struct file_operations l2cap_debugfs_fops = {
-	.open		= l2cap_debugfs_open,
-	.read		= seq_read,
-	.llseek		= seq_lseek,
-	.release	= single_release,
-};
-
-static struct dentry *l2cap_debugfs;
-
-static const struct proto_ops l2cap_sock_ops = {
-	.family		= PF_BLUETOOTH,
-	.owner		= THIS_MODULE,
-	.release	= l2cap_sock_release,
-	.bind		= l2cap_sock_bind,
-	.connect	= l2cap_sock_connect,
-	.listen		= l2cap_sock_listen,
-	.accept		= l2cap_sock_accept,
-	.getname	= l2cap_sock_getname,
-	.sendmsg	= l2cap_sock_sendmsg,
-	.recvmsg	= l2cap_sock_recvmsg,
-	.poll		= bt_sock_poll,
-	.ioctl		= bt_sock_ioctl,
-	.mmap		= sock_no_mmap,
-	.socketpair	= sock_no_socketpair,
-	.shutdown	= l2cap_sock_shutdown,
-	.setsockopt	= l2cap_sock_setsockopt,
-	.getsockopt	= l2cap_sock_getsockopt
-};
-
-static const struct net_proto_family l2cap_sock_family_ops = {
-	.family	= PF_BLUETOOTH,
-	.owner	= THIS_MODULE,
-	.create	= l2cap_sock_create,
-};
-
-static struct hci_proto l2cap_hci_proto = {
-	.name		= "L2CAP",
-	.id		= HCI_PROTO_L2CAP,
-	.connect_ind	= l2cap_connect_ind,
-	.connect_cfm	= l2cap_connect_cfm,
-	.disconn_ind	= l2cap_disconn_ind,
-	.disconn_cfm	= l2cap_disconn_cfm,
-	.security_cfm	= l2cap_security_cfm,
-	.recv_acldata	= l2cap_recv_acldata
-};
-
-static int __init l2cap_init(void)
-{
-	int err;
-
-	err = proto_register(&l2cap_proto, 0);
-	if (err < 0)
-		return err;
-
-	_busy_wq = create_singlethread_workqueue("l2cap");
-	if (!_busy_wq) {
-		proto_unregister(&l2cap_proto);
-		return -ENOMEM;
-	}
-
-	err = bt_sock_register(BTPROTO_L2CAP, &l2cap_sock_family_ops);
-	if (err < 0) {
-		BT_ERR("L2CAP socket registration failed");
-		goto error;
-	}
-
-	err = hci_register_proto(&l2cap_hci_proto);
-	if (err < 0) {
-		BT_ERR("L2CAP protocol registration failed");
-		bt_sock_unregister(BTPROTO_L2CAP);
-		goto error;
-	}
-
-	if (bt_debugfs) {
-		l2cap_debugfs = debugfs_create_file("l2cap", 0444,
-					bt_debugfs, NULL, &l2cap_debugfs_fops);
-		if (!l2cap_debugfs)
-			BT_ERR("Failed to create L2CAP debug file");
-	}
-
-	BT_INFO("L2CAP ver %s", VERSION);
-	BT_INFO("L2CAP socket layer initialized");
-
-	return 0;
-
-error:
-	destroy_workqueue(_busy_wq);
-	proto_unregister(&l2cap_proto);
-	return err;
-}
-
-static void __exit l2cap_exit(void)
-{
-	debugfs_remove(l2cap_debugfs);
-
-	flush_workqueue(_busy_wq);
-	destroy_workqueue(_busy_wq);
-
-	if (bt_sock_unregister(BTPROTO_L2CAP) < 0)
-		BT_ERR("L2CAP socket unregistration failed");
-
-	if (hci_unregister_proto(&l2cap_hci_proto) < 0)
-		BT_ERR("L2CAP protocol unregistration failed");
-
-	proto_unregister(&l2cap_proto);
-}
-
-void l2cap_load(void)
-{
-	/* Dummy function to trigger automatic L2CAP module loading by
-	 * other modules that use L2CAP sockets but don't use any other
-	 * symbols from it. */
-}
-EXPORT_SYMBOL(l2cap_load);
-
-module_init(l2cap_init);
-module_exit(l2cap_exit);
-
-module_param(disable_ertm, bool, 0644);
-MODULE_PARM_DESC(disable_ertm, "Disable enhanced retransmission mode");
-
-MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
-MODULE_DESCRIPTION("Bluetooth L2CAP ver " VERSION);
-MODULE_VERSION(VERSION);
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("bt-proto-0");