ReactOS  0.4.15-dev-985-gd905dd5
virtio_ring.h
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1 #ifndef _UAPI_LINUX_VIRTIO_RING_H
2 #define _UAPI_LINUX_VIRTIO_RING_H
3 /* An interface for efficient virtio implementation, currently for use by KVM
4 * and lguest, but hopefully others soon. Do NOT change this since it will
5 * break existing servers and clients.
6 *
7 * This header is BSD licensed so anyone can use the definitions to implement
8 * compatible drivers/servers.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of IBM nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL IBM OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * Copyright Rusty Russell IBM Corporation 2007. */
34 
35 #include "linux/types.h"
36 #include "linux/virtio_types.h"
37 
38 /* We support indirect buffer descriptors */
39 #define VIRTIO_RING_F_INDIRECT_DESC 28
40 
41 /* The Guest publishes the used index for which it expects an interrupt
42 * at the end of the avail ring. Host should ignore the avail->flags field. */
43 /* The Host publishes the avail index for which it expects a kick
44 * at the end of the used ring. Guest should ignore the used->flags field. */
45 #define VIRTIO_RING_F_EVENT_IDX 29
46 
47 void vring_transport_features(VirtIODevice *vdev, u64 *features);
48 unsigned long vring_size(unsigned int num, unsigned long align, bool packed);
49 
50 #endif /* _UAPI_LINUX_VIRTIO_RING_H */
GLuint GLenum GLsizei GLsizei GLint GLint GLboolean packed
Definition: glext.h:9271
int align(int length, int align)
Definition: dsound8.c:36
void vring_transport_features(VirtIODevice *vdev, u64 *features)
Definition: VirtIORing.c:534
GLuint GLuint num
Definition: glext.h:9618
ULONG64 u64
Definition: btrfs.h:15
unsigned long vring_size(unsigned int num, unsigned long align, bool packed)
Definition: VirtIORing.c:555