HFCF_RED
hfsc_opts.flags |= HFCF_RED;
hfsc_opts.flags |= HFCF_RED|HFCF_ECN;
if (opts->flags & HFCF_RED)
if (flags & HFCF_RED) {
if (flags & (HFCF_RED|HFCF_RIO)) {
if (flags & HFCF_RED) {
flags |= HFCF_RED;
if ((flags & HFCF_ECN) && (flags & (HFCF_RED|HFCF_RIO)) == 0)
flags |= HFCF_RED;