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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 "core.h" | |
40 | ||
41 | #define TIPC_SERVER_NAME_LEN 32 | |
42 | ||
43 | /** | |
44 | * struct tipc_server - TIPC server structure | |
45 | * @conn_idr: identifier set of connection | |
46 | * @idr_lock: protect the connection identifier set | |
47 | * @idr_in_use: amount of allocated identifier entry | |
48 | * @rcvbuf_cache: memory cache of server receive buffer | |
49 | * @rcv_wq: receive workqueue | |
50 | * @send_wq: send workqueue | |
51 | * @max_rcvbuf_size: maximum permitted receive message length | |
52 | * @tipc_conn_new: callback will be called when new connection is incoming | |
53 | * @tipc_conn_shutdown: callback will be called when connection is shut down | |
54 | * @tipc_conn_recvmsg: callback will be called when message arrives | |
55 | * @saddr: TIPC server address | |
56 | * @name: server name | |
57 | * @imp: message importance | |
58 | * @type: socket type | |
59 | * @enabled: identify whether server is launched or not | |
60 | */ | |
61 | struct tipc_server { | |
62 | struct idr conn_idr; | |
63 | spinlock_t idr_lock; | |
64 | int idr_in_use; | |
65 | struct kmem_cache *rcvbuf_cache; | |
66 | struct workqueue_struct *rcv_wq; | |
67 | struct workqueue_struct *send_wq; | |
68 | int max_rcvbuf_size; | |
69 | void *(*tipc_conn_new) (int conid); | |
70 | void (*tipc_conn_shutdown) (int conid, void *usr_data); | |
71 | void (*tipc_conn_recvmsg) (int conid, struct sockaddr_tipc *addr, | |
72 | void *usr_data, void *buf, size_t len); | |
73 | struct sockaddr_tipc *saddr; | |
74 | const char name[TIPC_SERVER_NAME_LEN]; | |
75 | int imp; | |
76 | int type; | |
77 | int enabled; | |
78 | }; | |
79 | ||
80 | int tipc_conn_sendmsg(struct tipc_server *s, int conid, | |
81 | struct sockaddr_tipc *addr, void *data, size_t len); | |
82 | ||
83 | /** | |
84 | * tipc_conn_terminate - terminate connection with server | |
85 | * | |
86 | * Note: Must call it in process context since it might sleep | |
87 | */ | |
88 | void tipc_conn_terminate(struct tipc_server *s, int conid); | |
89 | ||
90 | int tipc_server_start(struct tipc_server *s); | |
91 | ||
92 | void tipc_server_stop(struct tipc_server *s); | |
93 | ||
94 | #endif |