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Comparing gvpe/src/device.h (file contents):
Revision 1.11 by pcg, Thu Oct 16 02:41:21 2003 UTC vs.
Revision 1.24 by root, Fri Sep 16 17:59:46 2011 UTC

1/* 1/*
2 device.h -- generic header for device.c 2 device.h -- generic header for device.c
3 Copyright (C) 2003 Marc Lehmann <pcg@goof.com> 3 Copyright (C) 2003-2008 Marc Lehmann <gvpe@schmorp.de>
4 4
5 This file is part of GVPE.
6
5 This program is free software; you can redistribute it and/or modify 7 GVPE is free software; you can redistribute it and/or modify it
6 it under the terms of the GNU General Public License as published by 8 under the terms of the GNU General Public License as published by the
7 the Free Software Foundation; either version 2 of the License, or 9 Free Software Foundation; either version 3 of the License, or (at your
8 (at your option) any later version. 10 option) any later version.
9 11
10 This program is distributed in the hope that it will be useful, 12 This program is distributed in the hope that it will be useful, but
11 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
13 GNU General Public License for more details. 15 Public License for more details.
14 16
15 You should have received a copy of the GNU General Public License 17 You should have received a copy of the GNU General Public License along
16 along with this program; if not, write to the Free Software 18 with this program; if not, see <http://www.gnu.org/licenses/>.
17 Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19
20 Additional permission under GNU GPL version 3 section 7
21
22 If you modify this Program, or any covered work, by linking or
23 combining it with the OpenSSL project's OpenSSL library (or a modified
24 version of that library), containing parts covered by the terms of the
25 OpenSSL or SSLeay licenses, the licensors of this Program grant you
26 additional permission to convey the resulting work. Corresponding
27 Source for a non-source form of such a combination shall include the
28 source code for the parts of OpenSSL used as well as that of the
29 covered work.
18*/ 30*/
19 31
20#ifndef VPE_DEVICE_H__ 32#ifndef GVPE_DEVICE_H__
21#define VPE_DEVICE_H__ 33#define GVPE_DEVICE_H__
34
35#include "config.h"
22 36
23#define IFNAMESIZE 256 // be conservative 37#define IFNAMESIZE 256 // be conservative
24 38
39#include "global.h"
25#include "gettext.h" 40#include "util.h"
26 41
27#include "global.h"
28
29struct net_packet { 42struct net_packet
43{
30 u32 len; // actually u16, but padding... 44 u32 len; // actually u16, but padding...
31 45
32 u8 &operator[] (u16 offset) const; 46 u8 &operator[] (u16 offset) const;
47 u8 *at (u16 offset) const;
33 48
34 void unshift_hdr (u16 hdrsize) 49 void unshift_hdr (u16 hdrsize)
35 { 50 {
36 memmove ((void *)&(*this)[hdrsize], (void *)&(*this)[0], len); 51 memmove ((void *)&(*this)[hdrsize], (void *)&(*this)[0], len);
37 len += hdrsize; 52 len += hdrsize;
… …
39 54
40 void skip_hdr (u16 hdrsize) 55 void skip_hdr (u16 hdrsize)
41 { 56 {
42 len -= hdrsize; 57 len -= hdrsize;
43 memmove ((void *)&(*this)[0], (void *)&(*this)[hdrsize], len); 58 memmove ((void *)&(*this)[0], (void *)&(*this)[hdrsize], len);
59 }
60
61 void skip_ipv4_hdr (u16 extra = 0)
62 {
63 skip_hdr ((((*this)[0] & 15) << 2) + extra);
44 } 64 }
45 65
46 void set (const net_packet &pkt) 66 void set (const net_packet &pkt)
47 { 67 {
48 len = pkt.len; 68 len = pkt.len;
… …
75 95
76 void *operator new (size_t s); 96 void *operator new (size_t s);
77 void operator delete (void *p); 97 void operator delete (void *p);
78}; 98};
79 99
80struct data_packet : net_packet { 100struct data_packet : net_packet
101{
81 u8 data_[MAXSIZE]; 102 u8 data_[MAXSIZE];
82}; 103};
83 104
84inline 105inline
85u8 &net_packet::operator[] (u16 offset) const 106u8 &net_packet::operator[] (u16 offset) const
86{ 107{
87 return ((data_packet *)this)->data_[offset]; 108 return ((data_packet *)this)->data_[offset];
88} 109}
89 110
90typedef u8 mac[6]; 111inline
112u8 *net_packet::at (u16 offset) const
113{
114 return &((*this)[offset]);
115}
91 116
92struct tap_packet : net_packet { 117struct tap_packet : net_packet
118{
93 mac dst; 119 mac dst;
94 mac src; 120 mac src;
95 u8 data[MAXSIZE - 12]; 121 u8 data[MAXSIZE - 12];
96}; 122};
97 123
98struct tap_device { 124struct tap_device
125{
99 int fd; 126 int fd;
100 127
101 // network interface name or identifier 128 // network interface name or identifier
102 char ifrname[IFNAMESIZE + 1]; 129 char ifrname[IFNAMESIZE + 1];
103 130
… …
109 //bool open (); 136 //bool open ();
110 //void close (); 137 //void close ();
111 138
112 const char *interface () { return ifrname; } 139 const char *interface () { return ifrname; }
113 const char *info (); 140 const char *info ();
141 const char *if_up ();
114 142
115 tap_packet *recv (); 143 tap_packet *recv ();
116 void send (tap_packet *pkt); 144 void send (tap_packet *pkt);
117}; 145};
118 146

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