dev/e1000/if_igb.c

878 	struct mbuf	*m_head;
897 		IFQ_DRV_DEQUEUE(&ifp->if_snd, m_head);
898 		if (m_head == NULL)
904 		if (igb_xmit(txr, &m_head)) {
905 			if (m_head != NULL)
906 				IFQ_DRV_PREPEND(&ifp->if_snd, m_head);
913 		ETHER_BPF_MTAP(ifp, m_head);
1799 	struct mbuf		*m_head = *m_headp;
1811 	if (m_head->m_flags & M_VLANTAG)
1815 	m_head = *m_headp;
1816 	do_tso = ((m_head->m_pkthdr.csum_flags & CSUM_TSO) != 0);
1833 	if (do_tso || m_head->m_pkthdr.csum_flags & CSUM_OFFLOAD) {
1834 		if (do_tso || (m_head->m_next != NULL &&
1835 		    m_head->m_pkthdr.csum_flags & CSUM_OFFLOAD)) {
1837 				m_head = m_dup(*m_headp, M_DONTWAIT);
1839 				if (m_head == NULL) {
1843 				*m_headp = m_head;
1851 		m_head = m_pullup(m_head, ehdrlen);
1852 		if (m_head == NULL) {
1856 		eh = mtod(m_head, struct ether_vlan_header *);
1859 			m_head = m_pullup(m_head, ehdrlen);
1860 			if (m_head == NULL) {
1865 		m_head = m_pullup(m_head, ehdrlen + sizeof(struct ip));
1866 		if (m_head == NULL) {
1870 		ip = (struct ip *)(mtod(m_head, char *) + ehdrlen);
1873 			m_head = m_pullup(m_head, poff + sizeof(struct tcphdr));
1874 			if (m_head == NULL) {
1884 			th = (struct tcphdr *)(mtod(m_head, char *) + poff);
1889 		} else if (m_head->m_pkthdr.csum_flags & CSUM_TCP) {
1890 			m_head = m_pullup(m_head, poff + sizeof(struct tcphdr));
1891 			if (m_head == NULL) {
1895 			th = (struct tcphdr *)(mtod(m_head, char *) + poff);
1896 			m_head = m_pullup(m_head, poff + (th->th_off << 2));
1897 			if (m_head == NULL) {
1901 			ip = (struct ip *)(mtod(m_head, char *) + ehdrlen);
1902 			th = (struct tcphdr *)(mtod(m_head, char *) + poff);
1903 		} else if (m_head->m_pkthdr.csum_flags & CSUM_UDP) {
1904 			m_head = m_pullup(m_head, poff + sizeof(struct udphdr));
1905 			if (m_head == NULL) {
1909 			ip = (struct ip *)(mtod(m_head, char *) + ehdrlen);
1911 		*m_headp = m_head;
1975 	m_head = *m_headp;
1984 	if (m_head->m_pkthdr.csum_flags & CSUM_TSO) {
1985 		if (igb_tso_setup(txr, m_head, ehdrlen, ip, th)) {
1991 	} else if (igb_tx_ctx_setup(txr, m_head))
1995 	olinfo_status |= ((m_head->m_pkthdr.len - hdrlen)
2019 		tx_buffer->m_head = NULL;
2025         tx_buffer->m_head = m_head;
3467 		if (txbuf->m_head != NULL) {
3471 			m_freem(txbuf->m_head);
3472 			txbuf->m_head = NULL;
3606 		if (tx_buffer->m_head != NULL) {
3611 			m_freem(tx_buffer->m_head);
3612 			tx_buffer->m_head = NULL;
3691 	tx_buffer->m_head = NULL;
3815 	tx_buffer->m_head = NULL;
3894 			if (tx_buffer->m_head) {
3896 				    tx_buffer->m_head->m_pkthdr.len;
3903                         	m_freem(tx_buffer->m_head);
3904                         	tx_buffer->m_head = NULL;
3990 		if (rxbuf->m_head == NULL) {
3995 			mh = rxbuf->m_head;
4007 			rxbuf->m_head = NULL;
4010 		rxbuf->m_head = mh;
4148 		if (rxbuf->m_head != NULL) {
4152 			rxbuf->m_head->m_flags |= M_PKTHDR;
4153 			m_freem(rxbuf->m_head);
4162 		rxbuf->m_head = NULL;
4233 		rxbuf->m_head = m_gethdr(M_DONTWAIT, MT_DATA);
4234 		if (rxbuf->m_head == NULL) {
4238 		m_adj(rxbuf->m_head, ETHER_ALIGN);
4239 		mh = rxbuf->m_head;
4244 		    rxbuf->hmap, rxbuf->m_head, hseg,
4576 			if (rxbuf->m_head != NULL) {
4580 				rxbuf->m_head->m_flags |= M_PKTHDR;
4581 				m_freem(rxbuf->m_head);
4590 			rxbuf->m_head = NULL;
4639 	if (rbuf->m_head) {
4640 		m_free(rbuf->m_head);
4641 		rbuf->m_head = NULL;
4781 			mh = rxr->rx_buffers[i].m_head;
4784 			rxbuf->m_head = NULL;