| 1 |
pcg |
1.1 |
/* |
| 2 |
|
|
device.h -- generic header for device.c |
| 3 |
|
|
|
| 4 |
|
|
This program is free software; you can redistribute it and/or modify |
| 5 |
|
|
it under the terms of the GNU General Public License as published by |
| 6 |
|
|
the Free Software Foundation; either version 2 of the License, or |
| 7 |
|
|
(at your option) any later version. |
| 8 |
|
|
|
| 9 |
|
|
This program is distributed in the hope that it will be useful, |
| 10 |
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 |
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 |
|
|
GNU General Public License for more details. |
| 13 |
|
|
|
| 14 |
|
|
You should have received a copy of the GNU General Public License |
| 15 |
|
|
along with this program; if not, write to the Free Software |
| 16 |
|
|
Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 17 |
|
|
*/ |
| 18 |
|
|
|
| 19 |
|
|
#ifndef VPE_DEVICE_H__ |
| 20 |
|
|
#define VPE_DEVICE_H__ |
| 21 |
|
|
|
| 22 |
|
|
#include <net/if.h> |
| 23 |
|
|
|
| 24 |
|
|
#include "gettext.h" |
| 25 |
|
|
|
| 26 |
|
|
#include "global.h" |
| 27 |
|
|
|
| 28 |
|
|
struct net_packet { |
| 29 |
|
|
u32 len; // actually u16, but padding... |
| 30 |
|
|
|
| 31 |
pcg |
1.4 |
u8 &operator[] (u16 offset) const; |
| 32 |
pcg |
1.2 |
|
| 33 |
|
|
void skip_hdr (u16 hdrsize) |
| 34 |
|
|
{ |
| 35 |
|
|
memmove ((void *)&(*this)[0], (void *)&(*this)[hdrsize], len -= hdrsize); |
| 36 |
|
|
} |
| 37 |
pcg |
1.1 |
|
| 38 |
pcg |
1.4 |
void set (const net_packet &pkt) |
| 39 |
|
|
{ |
| 40 |
|
|
len = pkt.len; |
| 41 |
|
|
memcpy (&((*this)[0]), &(pkt[0]), len); |
| 42 |
|
|
} |
| 43 |
|
|
|
| 44 |
pcg |
1.1 |
bool is_arp () |
| 45 |
|
|
{ |
| 46 |
|
|
return (*this)[12] == 0x08 && (*this)[13] == 0x06 // 0806 protocol |
| 47 |
|
|
&& (*this)[14] == 0x00 && (*this)[15] == 0x01 // 0001 hw_format |
| 48 |
|
|
&& (*this)[16] == 0x08 && (*this)[17] == 0x00 // 0800 prot_format |
| 49 |
|
|
&& (*this)[18] == 0x06 && (*this)[19] == 0x04; // 06 hw_len 04 prot_len |
| 50 |
|
|
} |
| 51 |
|
|
|
| 52 |
|
|
void *operator new (size_t s); |
| 53 |
|
|
void operator delete (void *p); |
| 54 |
|
|
}; |
| 55 |
|
|
|
| 56 |
|
|
struct data_packet : net_packet { |
| 57 |
|
|
u8 data_[MAXSIZE]; |
| 58 |
|
|
}; |
| 59 |
|
|
|
| 60 |
|
|
inline |
| 61 |
pcg |
1.4 |
u8 &net_packet::operator[] (u16 offset) const |
| 62 |
pcg |
1.1 |
{ |
| 63 |
|
|
return ((data_packet *)this)->data_[offset]; |
| 64 |
|
|
} |
| 65 |
|
|
|
| 66 |
|
|
typedef u8 mac[6]; |
| 67 |
|
|
|
| 68 |
|
|
struct tap_packet : net_packet { |
| 69 |
|
|
mac dst; |
| 70 |
|
|
mac src; |
| 71 |
|
|
u8 data[MAXSIZE - 12]; |
| 72 |
|
|
}; |
| 73 |
|
|
|
| 74 |
|
|
struct tap_device { |
| 75 |
|
|
int fd; |
| 76 |
|
|
|
| 77 |
|
|
// linux tuntap |
| 78 |
|
|
char ifrname[IFNAMSIZ + 1]; |
| 79 |
|
|
|
| 80 |
|
|
char *device; |
| 81 |
|
|
|
| 82 |
|
|
tap_device (); |
| 83 |
|
|
~tap_device (); |
| 84 |
|
|
|
| 85 |
|
|
const char *interface () { return ifrname; } |
| 86 |
|
|
const char *info () { return _("Linux tun/tap device"); } |
| 87 |
|
|
|
| 88 |
|
|
tap_packet *recv (); |
| 89 |
|
|
void send (tap_packet *pkt); |
| 90 |
|
|
}; |
| 91 |
|
|
|
| 92 |
|
|
#endif |
| 93 |
|
|
|
