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List: kvm
Subject: [PATCH 08/12] virtio: add a queue_index to VirtQueue
From: Jason Wang <jasowang () redhat ! com>
Date: 2012-12-28 10:32:00
Message-ID: 1356690724-37891-9-git-send-email-jasowang () redhat ! com
[Download RAW message or body]
Add a queue_index to VirtQueue and a helper to fetch it, this could be used by
multiqueue supported device.
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
hw/virtio.c | 8 ++++++++
hw/virtio.h | 1 +
2 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/hw/virtio.c b/hw/virtio.c
index bc3c9c3..726c139 100644
--- a/hw/virtio.c
+++ b/hw/virtio.c
@@ -72,6 +72,8 @@ struct VirtQueue
/* Notification enabled? */
bool notification;
+ uint16_t queue_index;
+
int inuse;
uint16_t vector;
@@ -929,6 +931,7 @@ VirtIODevice *virtio_common_init(const char *name, uint16_t device_id,
for(i = 0; i < VIRTIO_PCI_QUEUE_MAX; i++) {
vdev->vq[i].vector = VIRTIO_NO_VECTOR;
vdev->vq[i].vdev = vdev;
+ vdev->vq[i].queue_index = i;
}
vdev->name = name;
@@ -1008,6 +1011,11 @@ VirtQueue *virtio_get_queue(VirtIODevice *vdev, int n)
return vdev->vq + n;
}
+uint16_t virtio_get_queue_index(VirtQueue *vq)
+{
+ return vq->queue_index;
+}
+
static void virtio_queue_guest_notifier_read(EventNotifier *n)
{
VirtQueue *vq = container_of(n, VirtQueue, guest_notifier);
diff --git a/hw/virtio.h b/hw/virtio.h
index f6cb0f9..07b38d6 100644
--- a/hw/virtio.h
+++ b/hw/virtio.h
@@ -237,6 +237,7 @@ hwaddr virtio_queue_get_ring_size(VirtIODevice *vdev, int n);
uint16_t virtio_queue_get_last_avail_idx(VirtIODevice *vdev, int n);
void virtio_queue_set_last_avail_idx(VirtIODevice *vdev, int n, uint16_t idx);
VirtQueue *virtio_get_queue(VirtIODevice *vdev, int n);
+uint16_t virtio_get_queue_index(VirtQueue *vq);
int virtio_queue_get_id(VirtQueue *vq);
EventNotifier *virtio_queue_get_guest_notifier(VirtQueue *vq);
void virtio_queue_set_guest_notifier_fd_handler(VirtQueue *vq, bool assign,
--
1.7.1
--
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