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[RFC PATCH 07/12] vhost: Add VhostVDPAStartOp operation
From: |
Eugenio Pérez |
Subject: |
[RFC PATCH 07/12] vhost: Add VhostVDPAStartOp operation |
Date: |
Sat, 16 Jul 2022 13:34:02 +0200 |
It allows to run commands at start of the device, before it have enabled
any queue.
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
---
hw/virtio/vhost-shadow-virtqueue.h | 3 +++
include/hw/virtio/vhost-vdpa.h | 5 +++++
hw/virtio/vhost-vdpa.c | 8 ++++++++
3 files changed, 16 insertions(+)
diff --git a/hw/virtio/vhost-shadow-virtqueue.h
b/hw/virtio/vhost-shadow-virtqueue.h
index 03eb7ff670..210fe393cd 100644
--- a/hw/virtio/vhost-shadow-virtqueue.h
+++ b/hw/virtio/vhost-shadow-virtqueue.h
@@ -26,6 +26,8 @@ typedef struct SVQDescState {
} SVQDescState;
typedef struct VhostShadowVirtqueue VhostShadowVirtqueue;
+typedef int (*ShadowVirtQueueStart)(VhostShadowVirtqueue *svq,
+ void *opaque);
/**
* Callback to handle an avail buffer.
@@ -43,6 +45,7 @@ typedef int (*VirtQueueAvailCallback)(VhostShadowVirtqueue
*svq,
void *vq_callback_opaque);
typedef struct VhostShadowVirtqueueOps {
+ ShadowVirtQueueStart start;
VirtQueueAvailCallback avail_handler;
} VhostShadowVirtqueueOps;
diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h
index d10a89303e..b7d18b4e30 100644
--- a/include/hw/virtio/vhost-vdpa.h
+++ b/include/hw/virtio/vhost-vdpa.h
@@ -24,6 +24,10 @@ typedef struct VhostVDPAHostNotifier {
void *addr;
} VhostVDPAHostNotifier;
+struct vhost_vdpa;
+/* Called after send DRIVER_OK but after enabling vrings */
+typedef int (*VhostVDPAStartOp)(struct vhost_vdpa *v);
+
typedef struct vhost_vdpa {
int device_fd;
int index;
@@ -39,6 +43,7 @@ typedef struct vhost_vdpa {
GPtrArray *shadow_vqs;
const VhostShadowVirtqueueOps *shadow_vq_ops;
void *shadow_vq_ops_opaque;
+ VhostVDPAStartOp start_op;
struct vhost_dev *dev;
VhostVDPAHostNotifier notifier[VIRTIO_QUEUE_MAX];
} VhostVDPA;
diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c
index 1d8829c619..48f031b8c0 100644
--- a/hw/virtio/vhost-vdpa.c
+++ b/hw/virtio/vhost-vdpa.c
@@ -1136,6 +1136,14 @@ static int vhost_vdpa_dev_start(struct vhost_dev *dev,
bool started)
if (unlikely(r)) {
return r;
}
+
+ if (v->start_op) {
+ r = v->start_op(v);
+ if (unlikely(r)) {
+ return r;
+ }
+ }
+
vhost_vdpa_set_vring_ready(dev);
} else {
vhost_vdpa_reset_device(dev);
--
2.31.1
- Re: [RFC PATCH 02/12] vhost: Move SVQ queue rewind to the destination, (continued)
- [RFC PATCH 03/12] vdpa: Small rename of error labels, Eugenio Pérez, 2022/07/16
- [RFC PATCH 04/12] vdpa: delay set_vring_ready after DRIVER_OK, Eugenio Pérez, 2022/07/16
- [RFC PATCH 06/12] vhost: Use opaque data in SVQDescState, Eugenio Pérez, 2022/07/16
- [RFC PATCH 05/12] vhost: stop transfer elem ownership in vhost_handle_guest_kick, Eugenio Pérez, 2022/07/16
- [RFC PATCH 07/12] vhost: Add VhostVDPAStartOp operation,
Eugenio Pérez <=
- [RFC PATCH 08/12] vdpa: Add vhost_vdpa_start_control_svq, Eugenio Pérez, 2022/07/16
- [RFC PATCH 09/12] vdpa: Extract vhost_vdpa_net_svq_add from vhost_vdpa_net_handle_ctrl_avail, Eugenio Pérez, 2022/07/16
- [RFC PATCH 10/12] vdpa: Make vhost_vdpa_net_cvq_map_elem accept any out sg, Eugenio Pérez, 2022/07/16
- [RFC PATCH 11/12] vdpa: Add virtio-net mac address via CVQ at start, Eugenio Pérez, 2022/07/16