TH_ECE
if (f & TH_ECE)
if (tcp.th_flags & TH_ECE)
if ((tiflags & TH_ECE) && SEQ_GEQ(tp->snd_una, tp->snd_recover))
(tiflags & (TH_SYN|TH_FIN|TH_RST|TH_URG|TH_ECE|TH_CWR|TH_ACK))
if ((tiflags & TH_ECE) && tcp_do_ecn) {
flags |= TH_ECE|TH_CWR;
flags |= TH_ECE|TH_CWR;
flags |= TH_ECE;
if ((th->th_flags & (TH_ECE|TH_CWR)) && tcp_do_ecn)
th->th_flags |= TH_ECE;
case 'E': tfl |= TH_ECE; break;
if (tfl & TH_ECE) buf[i++] = 'E';
#ifndef TH_ECE
pf(TH_ECE, "ECE");