From: Cindy Lu <lulu@redhat.com>
To: mst@redhat.com, armbru@redhat.com, eblake@redhat.com,
cohuck@redhat.com, jasowang@redhat.com
Cc: mhabets@solarflare.com, qemu-devel@nongnu.org,
rob.miller@broadcom.com, saugatm@xilinx.com, lulu@redhat.com,
hanand@xilinx.com, hch@infradead.org, eperezma@redhat.com,
jgg@mellanox.com, shahafs@mellanox.com, kevin.tian@intel.com,
parav@mellanox.com, vmireyno@marvell.com,
cunming.liang@intel.com, gdawar@xilinx.com, jiri@mellanox.com,
xiao.w.wang@intel.com, stefanha@redhat.com,
zhihong.wang@intel.com, aadam@redhat.com, rdunlap@infradead.org,
maxime.coquelin@redhat.com, lingshan.zhu@intel.com
Subject: [RFC v2 6/9] virtio-bus: introduce queue_enabled method
Date: Sat, 9 May 2020 00:32:15 +0800 [thread overview]
Message-ID: <20200508163218.22592-7-lulu@redhat.com> (raw)
In-Reply-To: <20200508163218.22592-1-lulu@redhat.com>
From: Jason Wang <jasowang@redhat.com>
This patch introduces queue_enabled() method which allows the
transport to implement its own way to report whether or not a queue is
enabled.
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
hw/virtio/virtio.c | 6 ++++++
include/hw/virtio/virtio-bus.h | 4 ++++
2 files changed, 10 insertions(+)
diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c
index 04716b5f6c..09732a8836 100644
--- a/hw/virtio/virtio.c
+++ b/hw/virtio/virtio.c
@@ -3169,6 +3169,12 @@ hwaddr virtio_queue_get_desc_addr(VirtIODevice *vdev, int n)
bool virtio_queue_enabled(VirtIODevice *vdev, int n)
{
+ BusState *qbus = qdev_get_parent_bus(DEVICE(vdev));
+ VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(qbus);
+
+ if (k->queue_enabled)
+ return k->queue_enabled(qbus->parent, n);
+
return virtio_queue_get_desc_addr(vdev, n) != 0;
}
diff --git a/include/hw/virtio/virtio-bus.h b/include/hw/virtio/virtio-bus.h
index 38c9399cd4..0f6f215925 100644
--- a/include/hw/virtio/virtio-bus.h
+++ b/include/hw/virtio/virtio-bus.h
@@ -83,6 +83,10 @@ typedef struct VirtioBusClass {
*/
int (*ioeventfd_assign)(DeviceState *d, EventNotifier *notifier,
int n, bool assign);
+ /*
+ * Whether queue number n is enabled.
+ */
+ bool (*queue_enabled)(DeviceState *d, int n);
/*
* Does the transport have variable vring alignment?
* (ie can it ever call virtio_queue_set_align()?)
--
2.21.1
next prev parent reply other threads:[~2020-05-08 16:38 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-08 16:32 [RFC v2 0/9] vDPA support in qemu Cindy Lu
2020-05-08 16:32 ` [RFC v2 1/9] net: introduce qemu_get_peer Cindy Lu
2020-05-08 16:32 ` [RFC v2 2/9] net: use the function qemu_get_peer Cindy Lu
2020-05-09 2:19 ` Jason Wang
2020-05-09 6:49 ` Cindy Lu
2020-05-08 16:32 ` [RFC v2 3/9] virtio_net: introduce vhost_set_state Cindy Lu
2020-05-09 2:25 ` Jason Wang
2020-05-09 7:08 ` Cindy Lu
2020-05-08 16:32 ` [RFC v2 4/9] vhost-vdpa: introduce vhost-vdpa net client Cindy Lu
2020-05-08 16:41 ` Eric Blake
2020-05-09 7:17 ` Cindy Lu
2020-05-09 2:40 ` Jason Wang
2020-05-09 7:31 ` Cindy Lu
2020-05-08 16:32 ` [RFC v2 5/9] vhost-vdpa: implement vhost-vdpa backend Cindy Lu
2020-05-09 3:00 ` Jason Wang
2020-05-09 3:07 ` Jason Wang
2020-05-09 8:14 ` Cindy Lu
2020-05-21 12:40 ` Stefan Hajnoczi
2020-05-25 15:33 ` Cindy Lu
2020-05-25 16:15 ` Stefan Hajnoczi
2020-05-08 16:32 ` Cindy Lu [this message]
2020-05-09 3:01 ` [RFC v2 6/9] virtio-bus: introduce queue_enabled method Jason Wang
2020-05-09 6:50 ` Cindy Lu
2020-05-08 16:32 ` [RFC v2 7/9] virito-pci: implement " Cindy Lu
2020-05-09 3:02 ` Jason Wang
2020-05-09 12:01 ` Philippe Mathieu-Daudé
2020-05-11 5:08 ` Cindy Lu
2020-05-08 16:32 ` [RFC v2 8/9] vhost_net: set vq ready during start if necessary Cindy Lu
2020-05-09 3:03 ` Jason Wang
2020-05-09 6:51 ` Cindy Lu
2020-05-08 16:32 ` [RFC v2 9/9] vhost: introduce vhost_set_vring_ready method Cindy Lu
2020-05-09 3:05 ` Jason Wang
2020-05-09 3:10 ` [RFC v2 0/9] vDPA support in qemu Jason Wang
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