STAILQ_REMOVE_HEAD
STAILQ_REMOVE_HEAD((head), field); \
#ifndef STAILQ_REMOVE_HEAD
STAILQ_REMOVE_HEAD((head), field); \
STAILQ_REMOVE_HEAD((head), \
STAILQ_REMOVE_HEAD(&_la, field);\
STAILQ_REMOVE_HEAD(&_la, field);\
STAILQ_REMOVE_HEAD((head), \
STAILQ_REMOVE_HEAD(&pktlist, ipi_list);
STAILQ_REMOVE_HEAD(&pktlist, mpi_list);
STAILQ_REMOVE_HEAD(&pktlist, mpi_list);
STAILQ_REMOVE_HEAD((head), field); \
STAILQ_REMOVE_HEAD(&ometrics, entry);
STAILQ_REMOVE_HEAD(&om->vals, entry);
STAILQ_REMOVE_HEAD(&ol->labels, entry);
STAILQ_REMOVE_HEAD(&ometrics, entry);
STAILQ_REMOVE_HEAD(&om->vals, entry);
STAILQ_REMOVE_HEAD(&ol->labels, entry);