BBR_RWND_COLLAPSED
if (r_rsm->r_flags & BBR_RWND_COLLAPSED)
l_rsm->r_flags |= BBR_RWND_COLLAPSED;
if ((rsm->r_flags & BBR_RWND_COLLAPSED) == 0) {
((bbr->r_ctl.rc_resend->r_flags & BBR_RWND_COLLAPSED) == 0)) {
if (rsm->r_flags & BBR_RWND_COLLAPSED) {
rsm->r_flags &= ~BBR_RWND_COLLAPSED;
if (rsm->r_flags & BBR_RWND_COLLAPSED)
rsm->r_flags &= ~BBR_RWND_COLLAPSED;
nrsm->r_flags |= BBR_RWND_COLLAPSED;
if (rsm->r_flags & BBR_RWND_COLLAPSED) {
rsm->r_flags &= ~BBR_RWND_COLLAPSED;