#include <netinet/tcp_seq.h>

netinet/tcp_seq.h

includes: sys/appleapiopts.h

15 macros

TCP sequence numbers are 32 bit integers operated on with modular arithmetic. These macros can be used to compare such integers.

#define SEQ_LT(a, b) ((int)((a)-(b)) < 0)

#define SEQ_LEQ(a, b) ((int)((a)-(b)) <= 0)

#define SEQ_GT(a, b) ((int)((a)-(b)) > 0)

#define SEQ_GEQ(a, b) ((int)((a)-(b)) >= 0)

#define SEQ_MIN(a, b) ((SEQ_LT(a, b)) ? (a) : (b))

#define SEQ_MAX(a, b) ((SEQ_GT(a, b)) ? (a) : (b))

for modulo comparisons of timestamps

#define TSTMP_LT(a, b) ((int)((a)-(b)) < 0)

#define TSTMP_GT(a, b) ((int)((a)-(b)) > 0)

#define TSTMP_LEQ(a, b) ((int)((a)-(b)) <= 0)

#define TSTMP_GEQ(a, b) ((int)((a)-(b)) >= 0)

TCP connection counts are 32 bit integers operated on with modular arithmetic. These macros can be used to compare such integers.

#define CC_LT(a, b) ((int)((a)-(b)) < 0)

#define CC_LEQ(a, b) ((int)((a)-(b)) <= 0)

#define CC_GT(a, b) ((int)((a)-(b)) > 0)

#define CC_GEQ(a, b) ((int)((a)-(b)) >= 0)

Macro to increment a CC: skip 0 which has a special meaning

#define CC_INC(c) (++(c) == 0 ? ++(c) : (c))