char *cp = "<";
#define pf(f) { if (ti->ti_flags&TH_/**/f) { printf("%s%s", cp, "f"); cp = ","; } }
pf(SYN); pf(ACK); pf(FIN); pf(RST);
char *cp = "<";
#define pf(f) { if (ti->ti_flags&TH_/**/f) { printf("%s%s", cp, "f"); cp = ","; } }
pf(SYN); pf(ACK); pf(FIN); pf(RST);