Author: sephe Date: Mon Jan 25 05:12:00 2016 New Revision: 294701 URL: https://svnweb.freebsd.org/changeset/base/294701
Log: hyperv/hn: Use m_copydata for chimney sending. While I'm here, move stack variables near their usage. Reviewed by: adrian, delphij, Jun Su <junsu microsoft com> Approved by: adrian (mentor) Sponsored by: Microsoft OSTC Differential Revision: https://reviews.freebsd.org/D4977 Modified: head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c Modified: head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c ============================================================================== --- head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c Mon Jan 25 05:01:32 2016 (r294700) +++ head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c Mon Jan 25 05:12:00 2016 (r294701) @@ -756,7 +756,6 @@ hn_start_locked(struct ifnet *ifp) struct hv_device *device_ctx = vmbus_get_devctx(sc->hn_dev); netvsc_dev *net_dev = sc->net_dev; netvsc_packet *packet; - struct mbuf *m_head, *m; struct ether_vlan_header *eh; rndis_msg *rndis_mesg; rndis_packet *rndis_pkt; @@ -767,8 +766,6 @@ hn_start_locked(struct ifnet *ifp) int ether_len; uint32_t rndis_msg_size = 0; uint32_t trans_proto_type; - uint32_t send_buf_section_idx = - NVSP_1_CHIMNEY_SEND_INVALID_SECTION_INDEX; if ((ifp->if_drv_flags & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) != IFF_DRV_RUNNING) @@ -778,6 +775,7 @@ hn_start_locked(struct ifnet *ifp) bus_dma_segment_t segs[HN_TX_DATA_SEGCNT_MAX]; int error, nsegs, i, send_failed = 0; struct hn_txdesc *txd; + struct mbuf *m_head; IFQ_DRV_DEQUEUE(&ifp->if_snd, m_head); if (m_head == NULL) @@ -940,24 +938,21 @@ pre_send: /* send packet with send buffer */ if (packet->tot_data_buf_len < sc->hn_tx_chimney_size) { + uint32_t send_buf_section_idx; + send_buf_section_idx = hv_nv_get_next_send_section(net_dev); if (send_buf_section_idx != NVSP_1_CHIMNEY_SEND_INVALID_SECTION_INDEX) { - char *dest = ((char *)net_dev->send_buf + - send_buf_section_idx * - net_dev->send_section_size); + uint8_t *dest = ((uint8_t *)net_dev->send_buf + + (send_buf_section_idx * + net_dev->send_section_size)); memcpy(dest, rndis_mesg, rndis_msg_size); dest += rndis_msg_size; - for (m = m_head; m != NULL; m = m->m_next) { - if (m->m_len) { - memcpy(dest, - (void *)mtod(m, vm_offset_t), - m->m_len); - dest += m->m_len; - } - } + + m_copydata(m_head, 0, m_head->m_pkthdr.len, + dest); packet->send_buf_section_idx = send_buf_section_idx; _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
