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
|
/* $Id: sbuf.h $ */
/** @file
* NAT - sbuf declarations/defines.
*/
/*
* Copyright (C) 2006-2010 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.
*/
/*
* This code is based on:
*
* Copyright (c) 1995 Danny Gasparovski.
*
* Please read the file COPYRIGHT for the
* terms and conditions of the copyright.
*/
#ifndef _SBUF_H_
#define _SBUF_H_
#ifndef VBOX_WITH_SLIRP_BSD_SBUF
# define sbflush(sb) sbdrop((sb),(sb)->sb_cc)
# define sbspace(sb) ((sb)->sb_datalen - (sb)->sb_cc)
# define SBUF_LEN(sb) ((sb)->sb_cc)
# define SBUF_SIZE(sb) ((sb)->sb_datalen)
struct sbuf
{
u_int sb_cc; /* actual chars in buffer */
u_int sb_datalen; /* Length of data */
char *sb_wptr; /* write pointer. points to where the next
* bytes should be written in the sbuf */
char *sb_rptr; /* read pointer. points to where the next
* byte should be read from the sbuf */
char *sb_data; /* Actual data */
};
void sbfree (struct sbuf *);
void sbdrop (struct sbuf *, int);
void sbreserve (PNATState, struct sbuf *, int);
void sbappend (PNATState, struct socket *, struct mbuf *);
void sbappendsb (PNATState, struct sbuf *, struct mbuf *);
void sbcopy (struct sbuf *, int, int, char *);
#else
void sbappend (PNATState, struct socket *, struct mbuf *);
# include "bsd/sys/sbuf.h"
# define SBUF_LEN(sb) (sbuf_len(sb))
/* XXX: @todo SBUF_SIZE is a hack both space and SIZE shouldn't be used out of subr_sbuf.c*/
# define SBUF_SIZE(sb) ((sb)->s_size)
/* see subr_sbuf.c to verify the formula */
# define sbspace(sb) (SBUF_SIZE(sb) - SBUF_LEN((sb)) - 1)
#endif
#endif
|
