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/*
* include/net/tipc/tipc_port.h: Include file for privileged access to TIPC ports
*
* Copyright (c) 1994-2007, Ericsson AB
* Copyright (c) 2005-2007, Wind River Systems
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the names of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _NET_TIPC_PORT_H_
#define _NET_TIPC_PORT_H_
#ifdef __KERNEL__
#include <linux/tipc.h>
#include <linux/skbuff.h>
#include <net/tipc/tipc_msg.h>
#define TIPC_FLOW_CONTROL_WIN 512
/**
* struct tipc_port - native TIPC port info available to privileged users
* @usr_handle: pointer to additional user-defined information about port
* @lock: pointer to spinlock for controlling access to port
* @connected: non-zero if port is currently connected to a peer port
* @conn_type: TIPC type used when connection was established
* @conn_instance: TIPC instance used when connection was established
* @conn_unacked: number of unacknowledged messages received from peer port
* @published: non-zero if port has one or more associated names
* @congested: non-zero if cannot send because of link or port congestion
* @max_pkt: maximum packet size "hint" used when building messages sent by port
* @ref: unique reference to port in TIPC object registry
* @phdr: preformatted message header used when sending messages
*/
struct tipc_port {
void *usr_handle;
spinlock_t *lock;
int connected;
u32 conn_type;
u32 conn_instance;
u32 conn_unacked;
int published;
u32 congested;
u32 max_pkt;
u32 ref;
struct tipc_msg phdr;
};
/**
* tipc_createport_raw - create a native TIPC port and return it's reference
*
* Note: 'dispatcher' and 'wakeup' deliver a locked port.
*/
u32 tipc_createport_raw(void *usr_handle,
u32 (*dispatcher)(struct tipc_port *, struct sk_buff *),
void (*wakeup)(struct tipc_port *),
const u32 importance);
/*
* tipc_set_msg_option(): port must be locked.
*/
int tipc_set_msg_option(struct tipc_port *tp_ptr,
const char *opt,
const u32 len);
int tipc_reject_msg(struct sk_buff *buf, u32 err);
int tipc_send_buf_fast(struct sk_buff *buf, u32 destnode);
void tipc_acknowledge(u32 port_ref,u32 ack);
struct tipc_port *tipc_get_port(const u32 ref);
void *tipc_get_handle(const u32 ref);
#endif
#endif
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