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[Qemu-devel] [PATCH V5 1/6] virtio: basic structure for packed ring
From: |
Jason Wang |
Subject: |
[Qemu-devel] [PATCH V5 1/6] virtio: basic structure for packed ring |
Date: |
Fri, 2 Aug 2019 00:06:01 -0400 |
From: Wei Xu <address@hidden>
Define packed ring structure according to Qemu nomenclature,
field data(wrap counter, etc) are also included.
Signed-off-by: Wei Xu <address@hidden>
Signed-off-by: Jason Wang <address@hidden>
---
hw/virtio/virtio.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c
index a94ea18a9c..981738fa19 100644
--- a/hw/virtio/virtio.c
+++ b/hw/virtio/virtio.c
@@ -39,6 +39,13 @@ typedef struct VRingDesc
uint16_t next;
} VRingDesc;
+typedef struct VRingPackedDesc {
+ uint64_t addr;
+ uint32_t len;
+ uint16_t id;
+ uint16_t flags;
+} VRingPackedDesc;
+
typedef struct VRingAvail
{
uint16_t flags;
@@ -77,17 +84,25 @@ typedef struct VRing
VRingMemoryRegionCaches *caches;
} VRing;
+typedef struct VRingPackedDescEvent {
+ uint16_t off_wrap;
+ uint16_t flags;
+} VRingPackedDescEvent ;
+
struct VirtQueue
{
VRing vring;
/* Next head to pop */
uint16_t last_avail_idx;
+ bool last_avail_wrap_counter;
/* Last avail_idx read from VQ. */
uint16_t shadow_avail_idx;
+ bool shadow_avail_wrap_counter;
uint16_t used_idx;
+ bool used_wrap_counter;
/* Last used index value we have signalled on */
uint16_t signalled_used;
--
2.18.1
- [Qemu-devel] [PATCH V5 0/6] Packed virtqueue for virtrio, Jason Wang, 2019/08/02
- [Qemu-devel] [PATCH V5 1/6] virtio: basic structure for packed ring,
Jason Wang <=
- [Qemu-devel] [PATCH V5 2/6] virtio: device/driverr area size calculation refactor for split ring, Jason Wang, 2019/08/02
- [Qemu-devel] [PATCH V5 3/6] virtio: basic packed virtqueue support, Jason Wang, 2019/08/02
- [Qemu-devel] [PATCH V5 4/6] virtio: event suppression support for packed ring, Jason Wang, 2019/08/02
- [Qemu-devel] [PATCH V5 5/6] vhost_net: enable packed ring support, Jason Wang, 2019/08/02
- [Qemu-devel] [PATCH V5 6/6] virtio: add property to enable packed virtqueue, Jason Wang, 2019/08/02