--- gvpe/src/global.h 2005/04/26 00:55:56 1.20 +++ gvpe/src/global.h 2007/12/02 00:45:42 1.22 @@ -49,28 +49,27 @@ #define DIGEST ENABLE_DIGEST () #define HMAC_KEYLEN (256 >> 3) // number of bits used for the HMAC key (also change CHG_HMAC_KEY) -#define MAX_SEQNO 0xfffffff0U +#define WINDOWSIZE 512 // sliding window size +#define MAX_SEQNO (0xfffffff0U - WINDOWSIZE * 8) #define CHG_SEQNO 0 // where the seqno starts within the rsa challenge #define CHG_CIPHER_KEY 4 // where the key starts within the rsa challenge #define CHG_HMAC_KEY 86 // where the key starts within the rsa challenge (256 bits at the end!) -// hdr seq len hmac MAC MAC -#define VPE_OVERHEAD (4 + 4 + 4 + RAND_SIZE + HMACLENGTH - 6 - 6) -#define IP_OVERHEAD 20 // size of a (normal) ip header -#define GRE_OVERHEAD (IP_OVERHEAD + 4) -#define ICMP_OVERHEAD (IP_OVERHEAD + 4) -#define UDP_OVERHEAD (IP_OVERHEAD + 20) // size of a (normal) ip + udp header (wrong, but don't care) -#define TCP_OVERHEAD (IP_OVERHEAD + 22) // size of a (normal) ip + tcp header + packetlength -#define MAX_OVERHEAD UDP_OVERHEAD // the max. overhead of any protocol (ok, tcp doesn't count) -#define ETH_OVERHEAD 14 // the size of an ethernet header -#define MAXSIZE (MAX_MTU + VPE_OVERHEAD)// slightly too large, but who cares +// hdr seq len hmac MAC MAC +#define VPE_OVERHEAD (4 + 4 + 4 + RAND_SIZE + HMACLENGTH - 6 - 6) +#define IP_OVERHEAD 20 // size of a (normal) ip header +#define GRE_OVERHEAD (IP_OVERHEAD + 4) +#define ICMP_OVERHEAD (IP_OVERHEAD + 4) +#define UDP_OVERHEAD (IP_OVERHEAD + 20) // size of a (normal) ip + udp header (wrong, but don't care) +#define TCP_OVERHEAD (IP_OVERHEAD + 22) // size of a (normal) ip + tcp header + packetlength +#define MAX_OVERHEAD UDP_OVERHEAD // the max. overhead of any protocol (ok, tcp doesn't count) +#define ETH_OVERHEAD 14 // the size of an ethernet header +#define MAXSIZE (MAX_MTU + VPE_OVERHEAD) // slightly too large, but who cares -#define PKTCACHESIZE 5 // the size of the memory pool for packets +#define PKTCACHESIZE 5 // the size of the memory pool for packets -#define QUEUEDEPTH 16 // the number of packets that will be queued (should be low) - -#define WINDOWSIZE 512 // sliding window size +#define QUEUEDEPTH 16 // the number of packets that will be queued (should be low) extern char *confbase; // directory in which all config files are extern char *thisnode; // config for current node (TODO: remove)