l2addr_hash_find
esw_uc = l2addr_hash_find(hash, mac, struct esw_uc_addr);
esw_uc = l2addr_hash_find(hash, mac, struct esw_uc_addr);
esw_mc = l2addr_hash_find(hash, mac, struct esw_mc_addr);
esw_mc = l2addr_hash_find(hash, mac, struct esw_mc_addr);
addr = l2addr_hash_find(hash, mac_list[i], struct vport_addr);