VirtualBox

source: vbox/trunk/src/VBox/NetworkServices/NAT/proxy_pollmgr.h@ 67954

Last change on this file since 67954 was 62481, checked in by vboxsync, 8 years ago

(C) 2016

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id Revision
File size: 2.6 KB
Line 
1/* $Id: proxy_pollmgr.h 62481 2016-07-22 18:30:21Z vboxsync $ */
2/** @file
3 * NAT Network - poll manager, definitions and declarations.
4 */
5
6/*
7 * Copyright (C) 2013-2016 Oracle Corporation
8 *
9 * This file is part of VirtualBox Open Source Edition (OSE), as
10 * available from http://www.virtualbox.org. This file is free software;
11 * you can redistribute it and/or modify it under the terms of the GNU
12 * General Public License (GPL) as published by the Free Software
13 * Foundation, in version 2 as it comes in the "COPYING" file of the
14 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16 */
17
18#ifndef _PROXY_POLLMGR_H_
19#define _PROXY_POLLMGR_H_
20
21#ifndef RT_OS_WINDOWS
22# include <unistd.h> /* for ssize_t */
23#endif
24#include "lwip/sys.h"
25
26enum pollmgr_slot_t {
27 POLLMGR_CHAN_PXTCP_ADD, /* new proxy tcp connection from guest */
28 POLLMGR_CHAN_PXTCP_POLLIN, /* free space in ringbuf, may POLLIN */
29 POLLMGR_CHAN_PXTCP_POLLOUT, /* schedule one-shot POLLOUT callback */
30 POLLMGR_CHAN_PXTCP_DEL, /* delete pxtcp */
31 POLLMGR_CHAN_PXTCP_RESET, /* send RST and delete pxtcp */
32
33 POLLMGR_CHAN_PXUDP_ADD, /* new proxy udp conversation from guest */
34 POLLMGR_CHAN_PXUDP_DEL, /* delete pxudp from pollmgr */
35
36 POLLMGR_CHAN_PORTFWD, /* add/remove port forwarding rules */
37
38 POLLMGR_SLOT_STATIC_COUNT,
39 POLLMGR_SLOT_FIRST_DYNAMIC = POLLMGR_SLOT_STATIC_COUNT
40};
41
42
43struct pollmgr_handler; /* forward */
44typedef int (*pollmgr_callback)(struct pollmgr_handler *, SOCKET, int);
45
46struct pollmgr_handler {
47 pollmgr_callback callback;
48 void *data;
49 int slot;
50};
51
52struct pollmgr_refptr {
53 struct pollmgr_handler *ptr;
54 sys_mutex_t lock;
55 size_t strong;
56 size_t weak;
57};
58
59int pollmgr_init(void);
60
61/* static named slots (aka "channels") */
62SOCKET pollmgr_add_chan(int, struct pollmgr_handler *);
63ssize_t pollmgr_chan_send(int, void *buf, size_t nbytes);
64void *pollmgr_chan_recv_ptr(struct pollmgr_handler *, SOCKET, int);
65
66/* dynamic slots */
67int pollmgr_add(struct pollmgr_handler *, SOCKET, int);
68
69/* special-purpose strong/weak references */
70struct pollmgr_refptr *pollmgr_refptr_create(struct pollmgr_handler *);
71void pollmgr_refptr_weak_ref(struct pollmgr_refptr *);
72struct pollmgr_handler *pollmgr_refptr_get(struct pollmgr_refptr *);
73void pollmgr_refptr_unref(struct pollmgr_refptr *);
74
75void pollmgr_update_events(int, int);
76void pollmgr_del_slot(int);
77
78void pollmgr_thread(void *);
79
80/* buffer for callbacks to receive udp without worrying about truncation */
81extern u8_t pollmgr_udpbuf[64 * 1024];
82
83#endif /* _PROXY_POLLMGR_H_ */
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