XSK_READY
if (xs->state != XSK_READY) {
if (xs->state != XSK_READY) {
if (xs->state != XSK_READY || xs->umem) {
if (xs->state != XSK_READY) {
if (state != XSK_READY && state != XSK_BOUND)
q = state == XSK_READY ? READ_ONCE(xs->fq_tmp) :
q = state == XSK_READY ? READ_ONCE(xs->cq_tmp) :
xs->state = XSK_READY;