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[Qemu-devel] [PATCH V4 15/19] virtio: introduce virtio_queue_get_index()
From: |
Jason Wang |
Subject: |
[Qemu-devel] [PATCH V4 15/19] virtio: introduce virtio_queue_get_index() |
Date: |
Wed, 18 Mar 2015 17:35:05 +0800 |
This patch introduces a helper that can get the queue index of a
VirtQueue. This is useful when traversing the list of VirtQueues.
Cc: Michael S. Tsirkin <address@hidden>
Signed-off-by: Jason Wang <address@hidden>
---
hw/virtio/virtio.c | 5 +++++
include/hw/virtio/virtio.h | 1 +
2 files changed, 6 insertions(+)
diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c
index ca157e8..d4c49ef 100644
--- a/hw/virtio/virtio.c
+++ b/hw/virtio/virtio.c
@@ -725,6 +725,11 @@ hwaddr virtio_queue_get_addr(VirtIODevice *vdev, int n)
return vdev->vq[n].pa;
}
+int virtio_queue_get_index(VirtIODevice *vdev, VirtQueue *vq)
+{
+ return vq - vdev->vq;
+}
+
void virtio_queue_set_num(VirtIODevice *vdev, int n, int num)
{
/* Don't allow guest to flip queue between existent and
diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h
index e3adb1d..f148590 100644
--- a/include/hw/virtio/virtio.h
+++ b/include/hw/virtio/virtio.h
@@ -171,6 +171,7 @@ void virtio_config_writew(VirtIODevice *vdev, uint32_t
addr, uint32_t data);
void virtio_config_writel(VirtIODevice *vdev, uint32_t addr, uint32_t data);
void virtio_queue_set_addr(VirtIODevice *vdev, int n, hwaddr addr);
hwaddr virtio_queue_get_addr(VirtIODevice *vdev, int n);
+int virtio_queue_get_index(VirtIODevice *vdev, VirtQueue *vq);
void virtio_queue_set_num(VirtIODevice *vdev, int n, int num);
int virtio_queue_get_num(VirtIODevice *vdev, int n);
void virtio_queue_set_align(VirtIODevice *vdev, int n, int align);
--
2.1.0
- [Qemu-devel] [PATCH V4 07/19] virtio-net: validate backend queue numbers against bus limitation, (continued)
- [Qemu-devel] [PATCH V4 07/19] virtio-net: validate backend queue numbers against bus limitation, Jason Wang, 2015/03/18
- [Qemu-devel] [PATCH V4 10/19] virtio-ccw: introduce ccw specific queue limit, Jason Wang, 2015/03/18
- [Qemu-devel] [PATCH V4 09/19] virito: introduce bus specific queue limit, Jason Wang, 2015/03/18
- [Qemu-devel] [PATCH V4 11/19] virtio-s390: switch to bus specific queue limit, Jason Wang, 2015/03/18
- [Qemu-devel] [PATCH V4 13/19] virtio-pci: switch to use bus specific queue limit, Jason Wang, 2015/03/18
- [Qemu-devel] [PATCH V4 12/19] virtio-mmio: switch to bus specific queue limit, Jason Wang, 2015/03/18
- [Qemu-devel] [PATCH V4 14/19] virtio: introduce vector to virtqueues mapping, Jason Wang, 2015/03/18
- [Qemu-devel] [PATCH V4 16/19] virtio-pci: speedup MSI-X masking and unmasking, Jason Wang, 2015/03/18
- [Qemu-devel] [PATCH V4 15/19] virtio: introduce virtio_queue_get_index(),
Jason Wang <=
- [Qemu-devel] [PATCH V4 17/19] virtio-pci: increase the maximum number of virtqueues to 513, Jason Wang, 2015/03/18
- [Qemu-devel] [PATCH V4 18/19] pci: remove hard-coded bar size in msix_init_exclusive_bar(), Jason Wang, 2015/03/18
[Qemu-devel] [PATCH V4 19/19] virtio-pci: introduce auto_msix_bar_size property, Jason Wang, 2015/03/18