Release 4.11 net/tipc/server.h
/*
* net/tipc/server.h: Include file for TIPC server code
*
* Copyright (c) 2012-2013, 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 _TIPC_SERVER_H
#define _TIPC_SERVER_H
#include <linux/idr.h>
#include <linux/tipc.h>
#include <net/net_namespace.h>
#define TIPC_SERVER_NAME_LEN 32
/**
* struct tipc_server - TIPC server structure
* @conn_idr: identifier set of connection
* @idr_lock: protect the connection identifier set
* @idr_in_use: amount of allocated identifier entry
* @net: network namspace instance
* @rcvbuf_cache: memory cache of server receive buffer
* @rcv_wq: receive workqueue
* @send_wq: send workqueue
* @max_rcvbuf_size: maximum permitted receive message length
* @tipc_conn_new: callback will be called when new connection is incoming
* @tipc_conn_release: callback will be called before releasing the connection
* @tipc_conn_recvmsg: callback will be called when message arrives
* @saddr: TIPC server address
* @name: server name
* @imp: message importance
* @type: socket type
*/
struct tipc_server {
struct idr conn_idr;
spinlock_t idr_lock;
int idr_in_use;
struct net *net;
struct kmem_cache *rcvbuf_cache;
struct workqueue_struct *rcv_wq;
struct workqueue_struct *send_wq;
int max_rcvbuf_size;
void *(*tipc_conn_new)(int conid);
void (*tipc_conn_release)(int conid, void *usr_data);
void (*tipc_conn_recvmsg)(struct net *net, int conid,
struct sockaddr_tipc *addr, void *usr_data,
void *buf, size_t len);
struct sockaddr_tipc *saddr;
char name[TIPC_SERVER_NAME_LEN];
int imp;
int type;
};
int tipc_conn_sendmsg(struct tipc_server *s, int conid,
struct sockaddr_tipc *addr, void *data, size_t len);
/**
* tipc_conn_terminate - terminate connection with server
*
* Note: Must call it in process context since it might sleep
*/
void tipc_conn_terminate(struct tipc_server *s, int conid);
int tipc_server_start(struct tipc_server *s);
void tipc_server_stop(struct tipc_server *s);
#endif
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