diff options
Diffstat (limited to 'sys/dev/hyperv/netvsc/if_hn.c')
| -rw-r--r-- | sys/dev/hyperv/netvsc/if_hn.c | 202 |
1 files changed, 185 insertions, 17 deletions
diff --git a/sys/dev/hyperv/netvsc/if_hn.c b/sys/dev/hyperv/netvsc/if_hn.c index 8750ab0..8e99eef 100644 --- a/sys/dev/hyperv/netvsc/if_hn.c +++ b/sys/dev/hyperv/netvsc/if_hn.c @@ -77,6 +77,7 @@ __FBSDID("$FreeBSD$"); #include <sys/systm.h> #include <sys/taskqueue.h> #include <sys/buf_ring.h> +#include <sys/eventhandler.h> #include <machine/atomic.h> #include <machine/in_cksum.h> @@ -85,6 +86,7 @@ __FBSDID("$FreeBSD$"); #include <net/ethernet.h> #include <net/if.h> #include <net/if_arp.h> +#include <net/if_dl.h> #include <net/if_media.h> #include <net/if_types.h> #include <net/if_var.h> @@ -211,6 +213,11 @@ struct hn_rxinfo { uint32_t hash_value; }; +struct hn_update_vf { + struct hn_rx_ring *rxr; + struct ifnet *vf; +}; + #define HN_RXINFO_VLAN 0x0001 #define HN_RXINFO_CSUM 0x0002 #define HN_RXINFO_HASHINF 0x0004 @@ -287,8 +294,9 @@ static int hn_txagg_pkts_sysctl(SYSCTL_HANDLER_ARGS); static int hn_txagg_pktmax_sysctl(SYSCTL_HANDLER_ARGS); static int hn_txagg_align_sysctl(SYSCTL_HANDLER_ARGS); static int hn_polling_sysctl(SYSCTL_HANDLER_ARGS); +static int hn_vf_sysctl(SYSCTL_HANDLER_ARGS); -static void hn_stop(struct hn_softc *); +static void hn_stop(struct hn_softc *, bool); static void hn_init_locked(struct hn_softc *); static int hn_chan_attach(struct hn_softc *, struct vmbus_channel *); @@ -696,7 +704,8 @@ hn_rxfilter_config(struct hn_softc *sc) HN_LOCK_ASSERT(sc); - if (ifp->if_flags & IFF_PROMISC) { + if ((ifp->if_flags & IFF_PROMISC) || + (sc->hn_flags & HN_FLAG_VF)) { filter = NDIS_PACKET_TYPE_PROMISCUOUS; } else { filter = NDIS_PACKET_TYPE_DIRECTED; @@ -883,6 +892,122 @@ hn_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr) ifmr->ifm_active |= IFM_10G_T | IFM_FDX; } +static void +hn_update_vf_task(void *arg, int pending __unused) +{ + struct hn_update_vf *uv = arg; + + uv->rxr->hn_vf = uv->vf; +} + +static void +hn_update_vf(struct hn_softc *sc, struct ifnet *vf) +{ + struct hn_rx_ring *rxr; + struct hn_update_vf uv; + struct task task; + int i; + + HN_LOCK_ASSERT(sc); + + TASK_INIT(&task, 0, hn_update_vf_task, &uv); + + for (i = 0; i < sc->hn_rx_ring_cnt; ++i) { + rxr = &sc->hn_rx_ring[i]; + + if (i < sc->hn_rx_ring_inuse) { + uv.rxr = rxr; + uv.vf = vf; + vmbus_chan_run_task(rxr->hn_chan, &task); + } else { + rxr->hn_vf = vf; + } + } +} + +static void +hn_set_vf(struct hn_softc *sc, struct ifnet *ifp, bool vf) +{ + struct ifnet *hn_ifp; + + HN_LOCK(sc); + + if (!(sc->hn_flags & HN_FLAG_SYNTH_ATTACHED)) + goto out; + + hn_ifp = sc->hn_ifp; + + if (ifp == hn_ifp) + goto out; + + if (ifp->if_alloctype != IFT_ETHER) + goto out; + + /* Ignore lagg/vlan interfaces */ + if (strcmp(ifp->if_dname, "lagg") == 0 || + strcmp(ifp->if_dname, "vlan") == 0) + goto out; + + if (bcmp(IF_LLADDR(ifp), IF_LLADDR(hn_ifp), ETHER_ADDR_LEN) != 0) + goto out; + + /* Now we're sure 'ifp' is a real VF device. */ + if (vf) { + if (sc->hn_flags & HN_FLAG_VF) + goto out; + + sc->hn_flags |= HN_FLAG_VF; + hn_rxfilter_config(sc); + } else { + if (!(sc->hn_flags & HN_FLAG_VF)) + goto out; + + sc->hn_flags &= ~HN_FLAG_VF; + if (sc->hn_ifp->if_drv_flags & IFF_DRV_RUNNING) + hn_rxfilter_config(sc); + else + hn_set_rxfilter(sc, NDIS_PACKET_TYPE_NONE); + } + + hn_nvs_set_datapath(sc, + vf ? HN_NVS_DATAPATH_VF : HN_NVS_DATAPATH_SYNTHETIC); + + hn_update_vf(sc, vf ? ifp : NULL); + + if (vf) { + hn_suspend_mgmt(sc); + sc->hn_link_flags &= + ~(HN_LINK_FLAG_LINKUP | HN_LINK_FLAG_NETCHG); + if_link_state_change(sc->hn_ifp, LINK_STATE_DOWN); + } else { + hn_resume_mgmt(sc); + } + + devctl_notify("HYPERV_NIC_VF", if_name(hn_ifp), + vf ? "VF_UP" : "VF_DOWN", NULL); + + if (bootverbose) + if_printf(hn_ifp, "Data path is switched %s %s\n", + vf ? "to" : "from", if_name(ifp)); +out: + HN_UNLOCK(sc); +} + +static void +hn_ifnet_event(void *arg, struct ifnet *ifp, int event) +{ + if (event != IFNET_EVENT_UP && event != IFNET_EVENT_DOWN) + return; + + hn_set_vf(arg, ifp, event == IFNET_EVENT_UP); +} + +static void +hn_ifaddr_event(void *arg, struct ifnet *ifp) +{ + hn_set_vf(arg, ifp, ifp->if_flags & IFF_UP); +} + /* {F8615163-DF3E-46c5-913F-F2D2F965ED0E} */ static const struct hyperv_guid g_net_vsc_device_type = { .hv_guid = {0x63, 0x51, 0x61, 0xF8, 0x3E, 0xDF, 0xc5, 0x46, @@ -1111,6 +1236,9 @@ hn_attach(device_t dev) CTLTYPE_UINT | CTLFLAG_RW | CTLFLAG_MPSAFE, sc, 0, hn_polling_sysctl, "I", "Polling frequency: [100,1000000], 0 disable polling"); + SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "vf", + CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE, sc, 0, + hn_vf_sysctl, "A", "Virtual Function's name"); /* * Setup the ifmedia, which has been initialized earlier. @@ -1204,6 +1332,12 @@ hn_attach(device_t dev) sc->hn_mgmt_taskq = sc->hn_mgmt_taskq0; hn_update_link_status(sc); + sc->hn_ifnet_evthand = EVENTHANDLER_REGISTER(ifnet_event, + hn_ifnet_event, sc, EVENTHANDLER_PRI_ANY); + + sc->hn_ifaddr_evthand = EVENTHANDLER_REGISTER(ifaddr_event, + hn_ifaddr_event, sc, EVENTHANDLER_PRI_ANY); + return (0); failed: if (sc->hn_flags & HN_FLAG_SYNTH_ATTACHED) @@ -1218,6 +1352,11 @@ hn_detach(device_t dev) struct hn_softc *sc = device_get_softc(dev); struct ifnet *ifp = sc->hn_ifp; + if (sc->hn_ifaddr_evthand != NULL) + EVENTHANDLER_DEREGISTER(ifaddr_event, sc->hn_ifaddr_evthand); + if (sc->hn_ifnet_evthand != NULL) + EVENTHANDLER_DEREGISTER(ifnet_event, sc->hn_ifnet_evthand); + if (sc->hn_xact != NULL && vmbus_chan_is_revoked(sc->hn_prichan)) { /* * In case that the vmbus missed the orphan handler @@ -1230,7 +1369,7 @@ hn_detach(device_t dev) HN_LOCK(sc); if (sc->hn_flags & HN_FLAG_SYNTH_ATTACHED) { if (ifp->if_drv_flags & IFF_DRV_RUNNING) - hn_stop(sc); + hn_stop(sc, true); /* * NOTE: * hn_stop() only suspends data, so managment @@ -2113,20 +2252,15 @@ static int hn_rxpkt(struct hn_rx_ring *rxr, const void *data, int dlen, const struct hn_rxinfo *info) { - struct ifnet *ifp = rxr->hn_ifp; + struct ifnet *ifp; struct mbuf *m_new; int size, do_lro = 0, do_csum = 1; int hash_type = M_HASHTYPE_OPAQUE; - if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) - return (0); + /* If the VF is active, inject the packet through the VF */ + ifp = rxr->hn_vf ? rxr->hn_vf : rxr->hn_ifp; - /* - * Bail out if packet contains more data than configured MTU. - */ - if (dlen > (ifp->if_mtu + ETHER_HDR_LEN)) { - return (0); - } else if (dlen <= MHLEN) { + if (dlen <= MHLEN) { m_new = m_gethdr(M_NOWAIT, MT_DATA); if (m_new == NULL) { if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1); @@ -2434,7 +2568,7 @@ hn_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) } } else { if (ifp->if_drv_flags & IFF_DRV_RUNNING) - hn_stop(sc); + hn_stop(sc, false); } sc->hn_if_flags = ifp->if_flags; @@ -2524,7 +2658,7 @@ hn_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) } static void -hn_stop(struct hn_softc *sc) +hn_stop(struct hn_softc *sc, bool detaching) { struct ifnet *ifp = sc->hn_ifp; int i; @@ -2545,6 +2679,13 @@ hn_stop(struct hn_softc *sc) atomic_clear_int(&ifp->if_drv_flags, IFF_DRV_OACTIVE); for (i = 0; i < sc->hn_tx_ring_inuse; ++i) sc->hn_tx_ring[i].hn_oactive = 0; + + /* + * If the VF is active, make sure the filter is not 0, even if + * the synthetic NIC is down. + */ + if (!detaching && (sc->hn_flags & HN_FLAG_VF)) + hn_rxfilter_config(sc); } static void @@ -3071,6 +3212,22 @@ hn_rss_hash_sysctl(SYSCTL_HANDLER_ARGS) } static int +hn_vf_sysctl(SYSCTL_HANDLER_ARGS) +{ + struct hn_softc *sc = arg1; + char vf_name[128]; + struct ifnet *vf; + + HN_LOCK(sc); + vf_name[0] = '\0'; + vf = sc->hn_rx_ring[0].hn_vf; + if (vf != NULL) + snprintf(vf_name, sizeof(vf_name), "%s", if_name(vf)); + HN_UNLOCK(sc); + return sysctl_handle_string(oidp, vf_name, sizeof(vf_name), req); +} + +static int hn_check_iplen(const struct mbuf *m, int hoff) { const struct ip *ip; @@ -4297,6 +4454,7 @@ hn_chan_attach(struct hn_softc *sc, struct vmbus_channel *chan) KASSERT((rxr->hn_rx_flags & HN_RX_FLAG_ATTACHED) == 0, ("RX ring %d already attached", idx)); rxr->hn_rx_flags |= HN_RX_FLAG_ATTACHED; + rxr->hn_chan = chan; if (bootverbose) { if_printf(sc->hn_ifp, "link RX ring %d to chan%u\n", @@ -4855,7 +5013,8 @@ hn_suspend(struct hn_softc *sc) /* Disable polling. */ hn_polling(sc, 0); - if (sc->hn_ifp->if_drv_flags & IFF_DRV_RUNNING) + if ((sc->hn_ifp->if_drv_flags & IFF_DRV_RUNNING) || + (sc->hn_flags & HN_FLAG_VF)) hn_suspend_data(sc); hn_suspend_mgmt(sc); } @@ -4944,9 +5103,18 @@ static void hn_resume(struct hn_softc *sc) { - if (sc->hn_ifp->if_drv_flags & IFF_DRV_RUNNING) + if ((sc->hn_ifp->if_drv_flags & IFF_DRV_RUNNING) || + (sc->hn_flags & HN_FLAG_VF)) hn_resume_data(sc); - hn_resume_mgmt(sc); + + /* + * When the VF is activated, the synthetic interface is changed + * to DOWN in hn_set_vf(). Here, if the VF is still active, we + * don't call hn_resume_mgmt() until the VF is deactivated in + * hn_set_vf(). + */ + if (!(sc->hn_flags & HN_FLAG_VF)) + hn_resume_mgmt(sc); /* * Re-enable polling if this interface is running and |
