1/****************************************************************************
2 ****************************************************************************
3 ***
4 ***   This header was automatically generated from a Linux kernel header
5 ***   of the same name, to make information necessary for userspace to
6 ***   call into the kernel available to libc.  It contains only constants,
7 ***   structures, and macros generated from the original header, and thus,
8 ***   contains no copyrightable information.
9 ***
10 ***   To edit the content of this header, modify the corresponding
11 ***   source file (e.g. under external/kernel-headers/original/) then
12 ***   run bionic/libc/kernel/tools/update_all.py
13 ***
14 ***   Any manual change here will be lost the next time this script will
15 ***   be run. You've been warned!
16 ***
17 ****************************************************************************
18 ****************************************************************************/
19#ifndef _UAPI_LINUX_VIRTIO_RING_H
20#define _UAPI_LINUX_VIRTIO_RING_H
21#include <linux/types.h>
22#define VRING_DESC_F_NEXT 1
23/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
24#define VRING_DESC_F_WRITE 2
25#define VRING_DESC_F_INDIRECT 4
26#define VRING_USED_F_NO_NOTIFY 1
27#define VRING_AVAIL_F_NO_INTERRUPT 1
28/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
29#define VIRTIO_RING_F_INDIRECT_DESC 28
30#define VIRTIO_RING_F_EVENT_IDX 29
31struct vring_desc {
32 __u64 addr;
33/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
34 __u32 len;
35 __u16 flags;
36 __u16 next;
37};
38/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
39struct vring_avail {
40 __u16 flags;
41 __u16 idx;
42 __u16 ring[];
43/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
44};
45struct vring_used_elem {
46 __u32 id;
47 __u32 len;
48/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
49};
50struct vring_used {
51 __u16 flags;
52 __u16 idx;
53/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
54 struct vring_used_elem ring[];
55};
56struct vring {
57 unsigned int num;
58/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
59 struct vring_desc *desc;
60 struct vring_avail *avail;
61 struct vring_used *used;
62};
63/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
64#define vring_used_event(vr) ((vr)->avail->ring[(vr)->num])
65#define vring_avail_event(vr) (*(__u16 *)&(vr)->used->ring[(vr)->num])
66#endif
67