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authorNick Terrell <terrelln@fb.com>2022-12-13 16:21:55 -0800
committerNick Terrell <terrelln@fb.com>2022-12-13 16:21:55 -0800
commit4f2c0a4acffbec01079c28f839422e64ddeff004 (patch)
tree06ada4a8a6d94a94c93944806041b8c994cebfc5 /include/uapi/linux/virtio_ring.h
parent88a309465b3f05a100c3b81966982c0f9f5d23a6 (diff)
parent830b3c68c1fb1e9176028d02ef86f3cf76aa2476 (diff)
Merge branch 'main' into zstd-linus
Diffstat (limited to 'include/uapi/linux/virtio_ring.h')
-rw-r--r--include/uapi/linux/virtio_ring.h16
1 files changed, 11 insertions, 5 deletions
diff --git a/include/uapi/linux/virtio_ring.h b/include/uapi/linux/virtio_ring.h
index 476d3e5c0fe7..f8c20d3de8da 100644
--- a/include/uapi/linux/virtio_ring.h
+++ b/include/uapi/linux/virtio_ring.h
@@ -93,15 +93,21 @@
#define VRING_USED_ALIGN_SIZE 4
#define VRING_DESC_ALIGN_SIZE 16
-/* Virtio ring descriptors: 16 bytes. These can chain together via "next". */
+/**
+ * struct vring_desc - Virtio ring descriptors,
+ * 16 bytes long. These can chain together via @next.
+ *
+ * @addr: buffer address (guest-physical)
+ * @len: buffer length
+ * @flags: descriptor flags
+ * @next: index of the next descriptor in the chain,
+ * if the VRING_DESC_F_NEXT flag is set. We chain unused
+ * descriptors via this, too.
+ */
struct vring_desc {
- /* Address (guest-physical). */
__virtio64 addr;
- /* Length. */
__virtio32 len;
- /* The flags as indicated above. */
__virtio16 flags;
- /* We chain unused descriptors via this, too */
__virtio16 next;
};