| 1 | /* |
1 | /* |
| 2 | global.h -- global variables and constants |
2 | global.h -- global variables and constants |
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3 | Copyright (C) 2003-2004 Marc Lehmann <pcg@goof.com> |
| 3 | |
4 | |
| 4 | This program is free software; you can redistribute it and/or modify |
5 | 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 | 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 | the Free Software Foundation; either version 2 of the License, or |
| 7 | (at your option) any later version. |
8 | (at your option) any later version. |
| … | |
… | |
| 55 | // hdr seq len hmac MAC MAC |
56 | // hdr seq len hmac MAC MAC |
| 56 | #define VPE_OVERHEAD (4 + 4 + 4 + RAND_SIZE + HMACLENGTH - 6 - 6) |
57 | #define VPE_OVERHEAD (4 + 4 + 4 + RAND_SIZE + HMACLENGTH - 6 - 6) |
| 57 | #define IP_OVERHEAD 20 // size of a (normal) ip header |
58 | #define IP_OVERHEAD 20 // size of a (normal) ip header |
| 58 | #define GRE_OVERHEAD (IP_OVERHEAD + 4) |
59 | #define GRE_OVERHEAD (IP_OVERHEAD + 4) |
| 59 | #define ICMP_OVERHEAD (IP_OVERHEAD + 4) |
60 | #define ICMP_OVERHEAD (IP_OVERHEAD + 4) |
| 60 | #define UDP_OVERHEAD (IP_OVERHEAD + 20) // size of a (normal) ip + udp header |
61 | #define UDP_OVERHEAD (IP_OVERHEAD + 20) // size of a (normal) ip + udp header (wrong, but don't care) |
| 61 | #define TCP_OVERHEAD (IP_OVERHEAD + 22) // size of a (normal) ip + tcp header + pakcetlength |
62 | #define TCP_OVERHEAD (IP_OVERHEAD + 22) // size of a (normal) ip + tcp header + packetlength |
| 62 | #define MAX_OVERHEAD UDP_OVERHEAD // the max. overhead of any protocol (ok, tcp doesn't count) |
63 | #define MAX_OVERHEAD UDP_OVERHEAD // the max. overhead of any protocol (ok, tcp doesn't count) |
| 63 | #define ETH_OVERHEAD 14 // the size of an ethernet header |
64 | #define ETH_OVERHEAD 14 // the size of an ethernet header |
| 64 | #define MAXSIZE (MAX_MTU + VPE_OVERHEAD)// slightly too large, but who cares |
65 | #define MAXSIZE (MAX_MTU + VPE_OVERHEAD)// slightly too large, but who cares |
| 65 | |
66 | |
| 66 | #define PKTCACHESIZE 5 // the size of the memory pool for packets |
67 | #define PKTCACHESIZE 5 // the size of the memory pool for packets |
