MFC: r312688

Approved by:	sephe (mentor)

r312688
    hyperv/hn: add the support for VF drivers (SR-IOV)

    Hyper-V's NIC SR-IOV implementation needs a Hyper-V synthetic NIC and
    a VF NIC to work together (both NICs have the same MAC address), mainly to
    support seamless live migration.

    When the VF device becomes UP (or DOWN), the synthetic NIC driver needs
    to switch the data path from the synthetic NIC to the VF (or the opposite).

    Note: multicast/broadcast packets are still received through the synthetic
    NIC and we need to inject the packets through the VF interface (if the VF is
    UP), even if the synthetic NIC is DOWN (so we need to force the rxfilter
    to be NDIS_PACKET_TYPE_PROMISCUOUS, when the VF is UP).

    Reviewed by:	sephe
    Approved by:	sephe (mentor)
    Sponsored by:	Microsoft
    Differential Revision:	https://reviews.freebsd.org/D8964

1 files changed, 1 insertions, 0 deletions

diff --git a/sys/dev/hyperv/netvsc/hn_nvs.h b/sys/dev/hyperv/netvsc/hn_nvs.h
index 49b03e0..f716abf 100644
--- a/sys/dev/hyperv/netvsc/hn_nvs.h
+++ b/sys/dev/hyperv/netvsc/hn_nvs.h
@@ -100,6 +100,7 @@ void		hn_nvs_sent_xact(struct hn_nvs_sendctx *sndc,
 int		hn_nvs_send_rndis_ctrl(struct vmbus_channel *chan,
 		    struct hn_nvs_sendctx *sndc, struct vmbus_gpa *gpa,
 		    int gpa_cnt);
+void		hn_nvs_set_datapath(struct hn_softc *sc, uint32_t path);
 
 extern struct hn_nvs_sendctx	hn_nvs_sendctx_none;