dev/re/if_re.c

2730 re_encap(struct rl_softc *sc, struct mbuf **m_head)
2743 	M_ASSERTPKTHDR((*m_head));
2757 	    (*m_head)->m_pkthdr.len < RL_IP4CSUMTX_PADLEN &&
2758 	    ((*m_head)->m_pkthdr.csum_flags & CSUM_IP) != 0) {
2759 		padlen = RL_MIN_FRAMELEN - (*m_head)->m_pkthdr.len;
2760 		if (M_WRITABLE(*m_head) == 0) {
2762 			m_new = m_dup(*m_head, M_NOWAIT);
2763 			m_freem(*m_head);
2765 				*m_head = NULL;
2768 			*m_head = m_new;
2770 		if ((*m_head)->m_next != NULL ||
2771 		    M_TRAILINGSPACE(*m_head) < padlen) {
2772 			m_new = m_defrag(*m_head, M_NOWAIT);
2774 				m_freem(*m_head);
2775 				*m_head = NULL;
2779 			m_new = *m_head;
2788 		*m_head = m_new;
2794 	    *m_head, segs, &nsegs, BUS_DMA_NOWAIT);
2796 		m_new = m_collapse(*m_head, M_NOWAIT, RL_NTXSEGS);
2798 			m_freem(*m_head);
2799 			*m_head = NULL;
2802 		*m_head = m_new;
2804 		    txd->tx_dmamap, *m_head, segs, &nsegs, BUS_DMA_NOWAIT);
2806 			m_freem(*m_head);
2807 			*m_head = NULL;
2813 		m_freem(*m_head);
2814 		*m_head = NULL;
2835 	if (((*m_head)->m_pkthdr.csum_flags & CSUM_TSO) != 0) {
2838 			vlanctl |= ((uint32_t)(*m_head)->m_pkthdr.tso_segsz <<
2842 			    ((uint32_t)(*m_head)->m_pkthdr.tso_segsz <<
2851 		if (((*m_head)->m_pkthdr.csum_flags & RE_CSUM_FEATURES) != 0) {
2854 				if (((*m_head)->m_pkthdr.csum_flags &
2857 				if (((*m_head)->m_pkthdr.csum_flags &
2862 				if (((*m_head)->m_pkthdr.csum_flags &
2865 				if (((*m_head)->m_pkthdr.csum_flags &
2877 	if ((*m_head)->m_flags & M_VLANTAG)
2878 		vlanctl |= bswap16((*m_head)->m_pkthdr.ether_vtag) |
2916 	txd_last->tx_m = *m_head;
2939 	struct mbuf		*m_head;
2966 		IFQ_DRV_DEQUEUE(&ifp->if_snd, m_head);
2967 		if (m_head == NULL)
2970 		if (re_encap(sc, &m_head) != 0) {
2971 			if (m_head == NULL)
2973 			IFQ_DRV_PREPEND(&ifp->if_snd, m_head);
2982 		ETHER_BPF_MTAP(ifp, m_head);