/*
 * Copyright (c) 2012-2015 The Linux Foundation. All rights reserved.
 *
 * Previously licensed under the ISC license by Qualcomm Atheros, Inc.
 *
 *
 * Permission to use, copy, modify, and/or distribute this software for
 * any purpose with or without fee is hereby granted, provided that the
 * above copyright notice and this permission notice appear in all
 * copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
 * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
 * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, 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.
 */

/*
 * This file was originally distributed by Qualcomm Atheros, Inc.
 * under proprietary terms before Copyright ownership was assigned
 * to the Linux Foundation.
 */

/******************************************************************************
* wlan_nlink_srv.h
*
* wlan_nlink_srv is used to RX/TX Netlink messages from user space to kernel
* modules and vice versa. Kernel modules must register a message handler for a
* message type so that the wlan_nlink_srv can invoke the corresponding msg handler
* whenever a Netlink message of a particular type has been received from an
* application.  In the opposite direction, wlan_nlink_srv provides a mechanism
* which kernel modules can use to send Netlink messages to applications.
*
******************************************************************************/

#ifndef WLAN_NLINK_SRV_H
#define WLAN_NLINK_SRV_H

#include <linux/skbuff.h>
#include <net/netlink.h>
#include <wlan_nlink_common.h>

#define INVALID_PID -1
#define NLINK_MAX_CALLBACKS (WLAN_NL_MSG_MAX - WLAN_NL_MSG_BASE)

typedef int (*nl_srv_msg_callback)(struct sk_buff *skb);

int nl_srv_init(void);
void nl_srv_exit(void);
int nl_srv_register(tWlanNlModTypes msg_type, nl_srv_msg_callback msg_handler);
int nl_srv_unregister(tWlanNlModTypes msg_type,
		      nl_srv_msg_callback msg_handler);
int nl_srv_ucast(struct sk_buff *skb, int dst_pid, int flag);
int nl_srv_bcast(struct sk_buff *skb);
int nl_srv_is_initialized(void);
#endif