Once a request is completed, xen_9pfs_push_and_notify gets called. In xen_9pfs_push_and_notify, update the indexes (data has already been copied to the sg by the common code) and send a notification to the frontend.
Schedule the bottom-half to check if we already have any other requests pending. Signed-off-by: Stefano Stabellini <stef...@aporeto.com> CC: anthony.per...@citrix.com CC: jgr...@suse.com CC: Aneesh Kumar K.V <aneesh.ku...@linux.vnet.ibm.com> CC: Greg Kurz <gr...@kaod.org> --- hw/9pfs/xen-9p-backend.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/hw/9pfs/xen-9p-backend.c b/hw/9pfs/xen-9p-backend.c index d72a749..fed369f 100644 --- a/hw/9pfs/xen-9p-backend.c +++ b/hw/9pfs/xen-9p-backend.c @@ -166,6 +166,22 @@ static void xen_9pfs_init_in_iov_from_pdu(V9fsPDU *pdu, static void xen_9pfs_push_and_notify(V9fsPDU *pdu) { + RING_IDX prod; + struct Xen9pfsDev *priv = container_of(pdu->s, struct Xen9pfsDev, state); + struct Xen9pfsRing *ring = &priv->rings[pdu->tag % priv->num_rings]; + + ring->intf->out_cons = ring->out_cons; + xen_wmb(); + + prod = ring->intf->in_prod; + xen_rmb(); + ring->intf->in_prod = prod + pdu->size; + xen_wmb(); + + ring->inprogress = false; + xenevtchn_notify(ring->evtchndev, ring->local_port); + + qemu_bh_schedule(ring->bh); } static const struct V9fsTransport xen_9p_transport = { -- 1.9.1 _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel