l2addr_hash_add
esw_uc = l2addr_hash_add(hash, mac, struct esw_uc_addr, GFP_KERNEL);
esw_mc = l2addr_hash_add(hash, mac, struct esw_mc_addr, GFP_KERNEL);
addr = l2addr_hash_add(hash, mac_list[i], struct vport_addr,