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 | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/hw/9pfs/xen-9p-backend.c b/hw/9pfs/xen-9p-backend.c
index 0c1dd5e..7e962aa 100644
--- a/hw/9pfs/xen-9p-backend.c
+++ b/hw/9pfs/xen-9p-backend.c
@@ -183,6 +183,25 @@ static void xen_9pfs_init_in_iov_from_pdu(V9fsPDU *pdu,
static void xen_9pfs_push_and_notify(V9fsPDU *pdu)
{
+ RING_IDX prod;
+ Xen9pfsDev *priv = container_of(pdu->s, Xen9pfsDev, state);
+ Xen9pfsRing *ring = &priv->rings[pdu->tag % priv->num_rings];
+
+ g_free(ring->sg);
+ ring->sg = NULL;
+
+ 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
