1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
|
/* $Id: proxy_pollmgr.h $ */
/** @file
* NAT Network - poll manager, definitions and declarations.
*/
/*
* Copyright (C) 2013-2019 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*/
#ifndef VBOX_INCLUDED_SRC_NAT_proxy_pollmgr_h
#define VBOX_INCLUDED_SRC_NAT_proxy_pollmgr_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif
#ifndef RT_OS_WINDOWS
# include <unistd.h> /* for ssize_t */
#endif
#include "lwip/sys.h"
enum pollmgr_slot_t {
POLLMGR_CHAN_PXTCP_ADD, /* new proxy tcp connection from guest */
POLLMGR_CHAN_PXTCP_POLLIN, /* free space in ringbuf, may POLLIN */
POLLMGR_CHAN_PXTCP_POLLOUT, /* schedule one-shot POLLOUT callback */
POLLMGR_CHAN_PXTCP_DEL, /* delete pxtcp */
POLLMGR_CHAN_PXTCP_RESET, /* send RST and delete pxtcp */
POLLMGR_CHAN_PXUDP_ADD, /* new proxy udp conversation from guest */
POLLMGR_CHAN_PXUDP_DEL, /* delete pxudp from pollmgr */
POLLMGR_CHAN_PORTFWD, /* add/remove port forwarding rules */
POLLMGR_CHAN_COUNT
};
struct pollmgr_handler; /* forward */
typedef int (*pollmgr_callback)(struct pollmgr_handler *, SOCKET, int);
struct pollmgr_handler {
pollmgr_callback callback;
void *data;
int slot;
};
struct pollmgr_refptr {
struct pollmgr_handler *ptr;
sys_mutex_t lock;
size_t strong;
size_t weak;
};
int pollmgr_init(void);
/* static named slots (aka "channels") */
SOCKET pollmgr_add_chan(int, struct pollmgr_handler *);
ssize_t pollmgr_chan_send(int, void *buf, size_t nbytes);
void *pollmgr_chan_recv_ptr(struct pollmgr_handler *, SOCKET, int);
/* dynamic slots */
int pollmgr_add(struct pollmgr_handler *, SOCKET, int);
/* special-purpose strong/weak references */
struct pollmgr_refptr *pollmgr_refptr_create(struct pollmgr_handler *);
void pollmgr_refptr_weak_ref(struct pollmgr_refptr *);
struct pollmgr_handler *pollmgr_refptr_get(struct pollmgr_refptr *);
void pollmgr_refptr_unref(struct pollmgr_refptr *);
void pollmgr_update_events(int, int);
void pollmgr_del_slot(int);
void pollmgr_thread(void *);
/* buffer for callbacks to receive udp without worrying about truncation */
extern u8_t pollmgr_udpbuf[64 * 1024];
#endif /* !VBOX_INCLUDED_SRC_NAT_proxy_pollmgr_h */
|
