fc_send_xon      1613 dev/pci/if_em.c 	sc->hw.fc_send_xon = TRUE;
fc_send_xon      1234 dev/pci/if_em_hw.c         if (hw->fc_send_xon) {
fc_send_xon      1442 dev/pci/if_em_hw.h     boolean_t fc_send_xon;