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Comparing gvpe/src/device.h (file contents):
Revision 1.1 by pcg, Sat Mar 1 15:53:03 2003 UTC vs.
Revision 1.10 by pcg, Thu Oct 16 02:28:36 2003 UTC

… …
17*/ 17*/
18 18
19#ifndef VPE_DEVICE_H__ 19#ifndef VPE_DEVICE_H__
20#define VPE_DEVICE_H__ 20#define VPE_DEVICE_H__
21 21
22#include "config.h" 22#define IFNAMESIZE 256 // be conservative
23
24#include <cstdlib>
25
26#include <net/if.h>
27 23
28#include "gettext.h" 24#include "gettext.h"
29 25
30#include "global.h" 26#include "global.h"
31 27
32struct net_packet { 28struct net_packet {
33 u32 len; // actually u16, but padding... 29 u32 len; // actually u16, but padding...
34 30
35 u8 &operator[] (u16 offset); 31 u8 &operator[] (u16 offset) const;
36 32
33 void unshift_hdr (u16 hdrsize)
34 {
35 memmove ((void *)&(*this)[hdrsize], (void *)&(*this)[0], len);
36 len += hdrsize;
37 }
38
39 void skip_hdr (u16 hdrsize)
40 {
41 len -= hdrsize;
42 memmove ((void *)&(*this)[0], (void *)&(*this)[hdrsize], len);
43 }
44
45 void set (const net_packet &pkt)
46 {
47 len = pkt.len;
48 memcpy (&((*this)[0]), &(pkt[0]), len);
49 }
50
51 bool is_ipv4 () const
52 {
53 return (*this)[12] == 0x08 && (*this)[13] == 0x00 // IP
54 && ((*this)[14] & 0xf0) == 0x40; // IPv4
55 }
56
57 u32 &ipv4_src () const
58 {
59 return *(u32 *)&(*this)[26];
60 }
61
62 u32 &ipv4_dst () const
63 {
64 return *(u32 *)&(*this)[30];
65 }
66
37 bool is_arp () 67 bool is_arp () const
38 { 68 {
39 return (*this)[12] == 0x08 && (*this)[13] == 0x06 // 0806 protocol 69 return (*this)[12] == 0x08 && (*this)[13] == 0x06 // 0806 protocol
40 && (*this)[14] == 0x00 && (*this)[15] == 0x01 // 0001 hw_format 70 && (*this)[14] == 0x00 && (*this)[15] == 0x01 // 0001 hw_format
41 && (*this)[16] == 0x08 && (*this)[17] == 0x00 // 0800 prot_format 71 && (*this)[16] == 0x08 && (*this)[17] == 0x00 // 0800 prot_format
42 && (*this)[18] == 0x06 && (*this)[19] == 0x04; // 06 hw_len 04 prot_len 72 && (*this)[18] == 0x06 && (*this)[19] == 0x04; // 06 hw_len 04 prot_len
… …
49struct data_packet : net_packet { 79struct data_packet : net_packet {
50 u8 data_[MAXSIZE]; 80 u8 data_[MAXSIZE];
51}; 81};
52 82
53inline 83inline
54u8 &net_packet::operator[] (u16 offset) 84u8 &net_packet::operator[] (u16 offset) const
55{ 85{
56 return ((data_packet *)this)->data_[offset]; 86 return ((data_packet *)this)->data_[offset];
57} 87}
58 88
59typedef u8 mac[6]; 89typedef u8 mac[6];
… …
65}; 95};
66 96
67struct tap_device { 97struct tap_device {
68 int fd; 98 int fd;
69 99
70 // linux tuntap 100 // network interface name or identifier
71 char ifrname[IFNAMSIZ + 1]; 101 char ifrname[IFNAMESIZE + 1];
72 102
73 char *device; 103 char *device;
74 104
75 tap_device (); 105 tap_device ();
76 ~tap_device (); 106 ~tap_device ();
77 107
108 //bool open ();
109 //void close ();
110
78 const char *interface () { return ifrname; } 111 const char *interface () { return ifrname; }
79 const char *info () { return _("Linux tun/tap device"); } 112 const char *info ();
80 113
81 tap_packet *recv (); 114 tap_packet *recv ();
82 void send (tap_packet *pkt); 115 void send (tap_packet *pkt);
83}; 116};
84 117
118//extern tap_device *tap_device ();
119
85#endif 120#endif
86 121

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