101 lines
3.8 KiB
C
101 lines
3.8 KiB
C
/*
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* net/tipc/server.h: Include file for TIPC server code
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*
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* Copyright (c) 2012-2013, Wind River Systems
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the names of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _TIPC_SERVER_H
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#define _TIPC_SERVER_H
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#include <linux/idr.h>
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#include <linux/tipc.h>
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#include <net/net_namespace.h>
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#define TIPC_SERVER_NAME_LEN 32
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/**
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* struct tipc_server - TIPC server structure
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* @conn_idr: identifier set of connection
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* @idr_lock: protect the connection identifier set
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* @idr_in_use: amount of allocated identifier entry
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* @net: network namspace instance
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* @rcvbuf_cache: memory cache of server receive buffer
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* @rcv_wq: receive workqueue
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* @send_wq: send workqueue
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* @max_rcvbuf_size: maximum permitted receive message length
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* @tipc_conn_new: callback will be called when new connection is incoming
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* @tipc_conn_release: callback will be called before releasing the connection
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* @tipc_conn_recvmsg: callback will be called when message arrives
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* @saddr: TIPC server address
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* @name: server name
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* @imp: message importance
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* @type: socket type
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*/
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struct tipc_server {
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struct idr conn_idr;
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spinlock_t idr_lock;
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int idr_in_use;
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struct net *net;
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struct kmem_cache *rcvbuf_cache;
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struct workqueue_struct *rcv_wq;
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struct workqueue_struct *send_wq;
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int max_rcvbuf_size;
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void *(*tipc_conn_new)(int conid);
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void (*tipc_conn_release)(int conid, void *usr_data);
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void (*tipc_conn_recvmsg)(struct net *net, int conid,
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struct sockaddr_tipc *addr, void *usr_data,
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void *buf, size_t len);
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struct sockaddr_tipc *saddr;
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char name[TIPC_SERVER_NAME_LEN];
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int imp;
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int type;
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};
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int tipc_conn_sendmsg(struct tipc_server *s, int conid,
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struct sockaddr_tipc *addr, void *data, size_t len);
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bool tipc_topsrv_kern_subscr(struct net *net, u32 port, u32 type,
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u32 lower, u32 upper, int *conid);
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void tipc_topsrv_kern_unsubscr(struct net *net, int conid);
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/**
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* tipc_conn_terminate - terminate connection with server
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*
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* Note: Must call it in process context since it might sleep
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*/
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void tipc_conn_terminate(struct tipc_server *s, int conid);
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int tipc_server_start(struct tipc_server *s);
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void tipc_server_stop(struct tipc_server *s);
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#endif
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