Author: sephe Date: Sun Sep 18 07:37:59 2016 New Revision: 305923 URL: https://svnweb.freebsd.org/changeset/base/305923
Log: hyperv/hn: Regroup ifnet setup code. While I'm here, add comment along the attach DEVMETHOD. MFC after: 1 week Sponsored by: Microsoft Differential Revision: https://reviews.freebsd.org/D7874 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 Sun Sep 18 07:37:00 2016 (r305922) +++ head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c Sun Sep 18 07:37:59 2016 (r305923) @@ -456,6 +456,9 @@ netvsc_attach(device_t dev) sc->hn_prichan = vmbus_get_channel(dev); HN_LOCK_INIT(sc); + /* + * Setup taskqueue for transmission. + */ if (hn_tx_taskq == NULL) { sc->hn_tx_taskq = taskqueue_create("hn_tx", M_WAITOK, taskqueue_thread_enqueue, &sc->hn_tx_taskq); @@ -477,11 +480,22 @@ netvsc_attach(device_t dev) sc->hn_tx_taskq = hn_tx_taskq; } + /* + * Allocate ifnet and setup its name earlier, so that if_printf + * can be used by functions, which will be called after + * ether_ifattach(). + */ ifp = sc->hn_ifp = if_alloc(IFT_ETHER); ifp->if_softc = sc; if_initname(ifp, device_get_name(dev), device_get_unit(dev)); /* + * Initialize ifmedia earlier so that it can be unconditionally + * destroyed, if error happened later on. + */ + ifmedia_init(&sc->hn_media, 0, hn_ifmedia_upd, hn_ifmedia_sts); + + /* * Figure out the # of RX rings (ring_cnt) and the # of TX rings * to use (tx_ring_cnt). * @@ -511,6 +525,10 @@ netvsc_attach(device_t dev) */ sc->hn_cpu = atomic_fetchadd_int(&hn_cpu_index, ring_cnt) % mp_ncpus; + /* + * Create enough TX/RX rings, even if only limited number of + * channels can be allocated. + */ error = hn_create_tx_data(sc, tx_ring_cnt); if (error) goto failed; @@ -533,6 +551,51 @@ netvsc_attach(device_t dev) if (error) goto failed; + error = hn_rndis_get_linkstatus(sc, &link_status); + if (error) + goto failed; + if (link_status == NDIS_MEDIA_STATE_CONNECTED) + sc->hn_carrier = 1; + + error = hn_rndis_get_eaddr(sc, eaddr); + if (error) + goto failed; + +#if __FreeBSD_version >= 1100099 + if (sc->hn_rx_ring_inuse > 1) { + /* + * Reduce TCP segment aggregation limit for multiple + * RX rings to increase ACK timeliness. + */ + hn_set_lro_lenlim(sc, HN_LRO_LENLIM_MULTIRX_DEF); + } +#endif + + hn_set_chim_size(sc, sc->hn_chim_szmax); + if (hn_tx_chimney_size > 0 && + hn_tx_chimney_size < sc->hn_chim_szmax) + hn_set_chim_size(sc, hn_tx_chimney_size); + + ctx = device_get_sysctl_ctx(dev); + child = SYSCTL_CHILDREN(device_get_sysctl_tree(dev)); + SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "nvs_version", CTLFLAG_RD, + &sc->hn_nvs_ver, 0, "NVS version"); + SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "ndis_version", + CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE, sc, 0, + hn_ndis_version_sysctl, "A", "NDIS version"); + + /* + * Setup the ifmedia, which has been initialized earlier. + */ + ifmedia_add(&sc->hn_media, IFM_ETHER | IFM_AUTO, 0, NULL); + ifmedia_set(&sc->hn_media, IFM_ETHER | IFM_AUTO); + /* XXX ifmedia_set really should do this for us */ + sc->hn_media.ifm_media = sc->hn_media.ifm_cur->ifm_media; + + /* + * Setup the ifnet for this interface. + */ + ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; ifp->if_ioctl = hn_ioctl; ifp->if_init = hn_init; @@ -548,15 +611,6 @@ netvsc_attach(device_t dev) ifp->if_qflush = hn_xmit_qflush; } - ifmedia_init(&sc->hn_media, 0, hn_ifmedia_upd, hn_ifmedia_sts); - ifmedia_add(&sc->hn_media, IFM_ETHER | IFM_AUTO, 0, NULL); - ifmedia_set(&sc->hn_media, IFM_ETHER | IFM_AUTO); - /* XXX ifmedia_set really should do this for us */ - sc->hn_media.ifm_media = sc->hn_media.ifm_cur->ifm_media; - - /* - * Tell upper layers that we support full VLAN capability. - */ ifp->if_capabilities |= IFCAP_VLAN_HWTAGGING | IFCAP_VLAN_MTU | IFCAP_HWCSUM | IFCAP_TSO | IFCAP_LRO; @@ -565,34 +619,14 @@ netvsc_attach(device_t dev) IFCAP_LRO; ifp->if_hwassist = sc->hn_tx_ring[0].hn_csum_assist | CSUM_TSO; -#if __FreeBSD_version >= 1100099 - if (sc->hn_rx_ring_inuse > 1) { - /* - * Reduce TCP segment aggregation limit for multiple - * RX rings to increase ACK timeliness. - */ - hn_set_lro_lenlim(sc, HN_LRO_LENLIM_MULTIRX_DEF); - } -#endif - - error = hn_rndis_get_linkstatus(sc, &link_status); - if (error) - goto failed; - if (link_status == NDIS_MEDIA_STATE_CONNECTED) - sc->hn_carrier = 1; - tso_maxlen = hn_tso_maxlen; if (tso_maxlen <= 0 || tso_maxlen > IP_MAXPACKET) tso_maxlen = IP_MAXPACKET; - ifp->if_hw_tsomaxsegcount = HN_TX_DATA_SEGCNT_MAX; ifp->if_hw_tsomaxsegsize = PAGE_SIZE; ifp->if_hw_tsomax = tso_maxlen - (ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN); - error = hn_rndis_get_eaddr(sc, eaddr); - if (error) - goto failed; ether_ifattach(ifp, eaddr); if_printf(ifp, "TSO: %u/%u/%u\n", ifp->if_hw_tsomax, @@ -601,21 +635,9 @@ netvsc_attach(device_t dev) /* Inform the upper layer about the long frame support. */ ifp->if_hdrlen = sizeof(struct ether_vlan_header); - hn_set_chim_size(sc, sc->hn_chim_szmax); - if (hn_tx_chimney_size > 0 && - hn_tx_chimney_size < sc->hn_chim_szmax) - hn_set_chim_size(sc, hn_tx_chimney_size); - - ctx = device_get_sysctl_ctx(dev); - child = SYSCTL_CHILDREN(device_get_sysctl_tree(dev)); - SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "nvs_version", CTLFLAG_RD, - &sc->hn_nvs_ver, 0, "NVS version"); - SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "ndis_version", - CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE, sc, 0, - hn_ndis_version_sysctl, "A", "NDIS version"); - return (0); failed: + /* TODO: reuse netvsc_detach() */ hn_destroy_tx_data(sc); if (ifp != NULL) if_free(ifp); _______________________________________________ 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"
