1/* 2 * net/tipc/server.h: Include file for TIPC server code 3 * 4 * Copyright (c) 2012-2013, Wind River Systems 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the names of the copyright holders nor the names of its 16 * contributors may be used to endorse or promote products derived from 17 * this software without specific prior written permission. 18 * 19 * Alternatively, this software may be distributed under the terms of the 20 * GNU General Public License ("GPL") version 2 as published by the Free 21 * Software Foundation. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 24 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 27 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 33 * POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36#ifndef _TIPC_SERVER_H 37#define _TIPC_SERVER_H 38 39#include <linux/idr.h> 40#include <linux/tipc.h> 41#include <net/net_namespace.h> 42 43#define TIPC_SERVER_NAME_LEN 32 44 45/** 46 * struct tipc_server - TIPC server structure 47 * @conn_idr: identifier set of connection 48 * @idr_lock: protect the connection identifier set 49 * @idr_in_use: amount of allocated identifier entry 50 * @net: network namspace instance 51 * @rcvbuf_cache: memory cache of server receive buffer 52 * @rcv_wq: receive workqueue 53 * @send_wq: send workqueue 54 * @max_rcvbuf_size: maximum permitted receive message length 55 * @tipc_conn_new: callback will be called when new connection is incoming 56 * @tipc_conn_release: callback will be called before releasing the connection 57 * @tipc_conn_recvmsg: callback will be called when message arrives 58 * @saddr: TIPC server address 59 * @name: server name 60 * @imp: message importance 61 * @type: socket type 62 */ 63struct tipc_server { 64 struct idr conn_idr; 65 spinlock_t idr_lock; 66 int idr_in_use; 67 struct net *net; 68 struct kmem_cache *rcvbuf_cache; 69 struct workqueue_struct *rcv_wq; 70 struct workqueue_struct *send_wq; 71 int max_rcvbuf_size; 72 void *(*tipc_conn_new)(int conid); 73 void (*tipc_conn_release)(int conid, void *usr_data); 74 void (*tipc_conn_recvmsg)(struct net *net, int conid, 75 struct sockaddr_tipc *addr, void *usr_data, 76 void *buf, size_t len); 77 struct sockaddr_tipc *saddr; 78 char name[TIPC_SERVER_NAME_LEN]; 79 int imp; 80 int type; 81}; 82 83int tipc_conn_sendmsg(struct tipc_server *s, int conid, 84 struct sockaddr_tipc *addr, void *data, size_t len); 85 86/** 87 * tipc_conn_terminate - terminate connection with server 88 * 89 * Note: Must call it in process context since it might sleep 90 */ 91void tipc_conn_terminate(struct tipc_server *s, int conid); 92 93int tipc_server_start(struct tipc_server *s); 94 95void tipc_server_stop(struct tipc_server *s); 96 97#endif 98