271 	struct mbuf    *m_head;  in ixgb_start()  local
286 		m_head = ifq_deq_begin(&ifp->if_snd);  in ixgb_start()
287 		if (m_head == NULL)  in ixgb_start()
290 		if (ixgb_encap(sc, m_head)) {  in ixgb_start()
291 			ifq_deq_rollback(&ifp->if_snd, m_head);  in ixgb_start()
296 		ifq_deq_commit(&ifp->if_snd, m_head);  in ixgb_start()
301 			bpf_mtap_ether(ifp->if_bpf, m_head, BPF_DIRECTION_OUT);  in ixgb_start()
624 ixgb_encap(struct ixgb_softc *sc, struct mbuf *m_head)  in ixgb_encap()  argument
653 				     m_head, BUS_DMA_NOWAIT);  in ixgb_encap()
664 	ixgb_transmit_checksum_setup(sc, m_head, &txd_popts);  in ixgb_encap()
680 		tx_buffer->m_head = NULL;  in ixgb_encap()
687 	if (m_head->m_flags & M_VLANTAG) {  in ixgb_encap()
689 		current_tx_desc->vlan = htole16(m_head->m_pkthdr.ether_vtag);  in ixgb_encap()
695 	tx_buffer->m_head = m_head;  in ixgb_encap()
1260 			if (tx_buffer->m_head != NULL) {  in ixgb_free_transmit_structures()
1261 				m_freem(tx_buffer->m_head);  in ixgb_free_transmit_structures()
1262 				tx_buffer->m_head = NULL;  in ixgb_free_transmit_structures()
1345 	tx_buffer->m_head = NULL;  in ixgb_transmit_checksum_setup()
1385 		if (tx_buffer->m_head != NULL) {  in ixgb_txeof()
1393 			m_freem(tx_buffer->m_head);  in ixgb_txeof()
1394 			tx_buffer->m_head = NULL;  in ixgb_txeof()
1475 	rx_buffer->m_head = mp;  in ixgb_get_buf()
1671 			if (rx_buffer->m_head != NULL) {  in ixgb_free_receive_structures()
1672 				m_freem(rx_buffer->m_head);  in ixgb_free_receive_structures()
1673 				rx_buffer->m_head = NULL;  in ixgb_free_receive_structures()
1731 		mp = sc->rx_buffer_area[i].m_head;  in ixgb_rxeof()
1784 			sc->rx_buffer_area[i].m_head = NULL;  in ixgb_rxeof()
1833 			mp = sc->rx_buffer_area[next_to_use].m_head;  in ixgb_rxeof()