linux-imx

/*

   BlueZ - Bluetooth protocol stack for Linux

   Copyright (C) 2000-2001 Qualcomm Incorporated

​

   Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>

​

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License version 2 as

   published by the Free Software Foundation;

​

   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

   OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.

   IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY

   CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES

   WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN

   ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF

   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

​

   ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,

   COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS

   SOFTWARE IS DISCLAIMED.

*/

​

/* Bluetooth address family and sockets. */

​

#include <linux/module.h>

#include <linux/debugfs.h>

#include <linux/stringify.h>

#include <linux/sched/signal.h>

​

#include <asm/ioctls.h>

​

#include <net/bluetooth/bluetooth.h>

#include <linux/proc_fs.h>

​

#include "leds.h"

#include "selftest.h"

​

/* Bluetooth sockets */

#define BT_MAX_PROTO    8

static const struct net_proto_family *bt_proto[BT_MAX_PROTO];

static DEFINE_RWLOCK(bt_proto_lock);

​

static struct lock_class_key bt_lock_key[BT_MAX_PROTO];

static const char *const bt_key_strings[BT_MAX_PROTO] = {

    "sk_lock-AF_BLUETOOTH-BTPROTO_L2CAP",

    "sk_lock-AF_BLUETOOTH-BTPROTO_HCI",

    "sk_lock-AF_BLUETOOTH-BTPROTO_SCO",

    "sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM",

    "sk_lock-AF_BLUETOOTH-BTPROTO_BNEP",

    "sk_lock-AF_BLUETOOTH-BTPROTO_CMTP",

    "sk_lock-AF_BLUETOOTH-BTPROTO_HIDP",

    "sk_lock-AF_BLUETOOTH-BTPROTO_AVDTP",

};

​

static struct lock_class_key bt_slock_key[BT_MAX_PROTO];

static const char *const bt_slock_key_strings[BT_MAX_PROTO] = {

    "slock-AF_BLUETOOTH-BTPROTO_L2CAP",

    "slock-AF_BLUETOOTH-BTPROTO_HCI",

    "slock-AF_BLUETOOTH-BTPROTO_SCO",

    "slock-AF_BLUETOOTH-BTPROTO_RFCOMM",

    "slock-AF_BLUETOOTH-BTPROTO_BNEP",

    "slock-AF_BLUETOOTH-BTPROTO_CMTP",

    "slock-AF_BLUETOOTH-BTPROTO_HIDP",

    "slock-AF_BLUETOOTH-BTPROTO_AVDTP",

};

​

void bt_sock_reclassify_lock(struct sock *sk, int proto)

{

    BUG_ON(!sk);

    BUG_ON(!sock_allow_reclassification(sk));

​

    sock_lock_init_class_and_name(sk,

            bt_slock_key_strings[proto], &bt_slock_key[proto],

                bt_key_strings[proto], &bt_lock_key[proto]);

}

EXPORT_SYMBOL(bt_sock_reclassify_lock);

​

int bt_sock_register(int proto, const struct net_proto_family *ops)

{

    int err = 0;

​

    if (proto < 0 || proto >= BT_MAX_PROTO)

        return -EINVAL;

​

    write_lock(&bt_proto_lock);

​

    if (bt_proto[proto])

        err = -EEXIST;

    else

        bt_proto[proto] = ops;