mac_flow_add
rc = mac_flow_add(mip->mi_flow_tab, grp->mbg_flow_ent);
if ((err = mac_flow_add(mip->mi_flow_tab, flent)) != 0) {
err = mac_flow_add(ft, flent);
err = mac_flow_add(ft, flent1);
if ((err = mac_flow_add(mip->mi_flow_tab, flent)) != 0)
err = mac_flow_add(ft, flent);
if (mac_flow_add(ft, flent) != 0) {
err = mac_flow_add(ft, flent);
extern int mac_flow_add(flow_tab_t *, flow_entry_t *);