1 /*
2 * This header, excluding the #ifdef __KERNEL__ part, is BSD licensed so
3 * anyone can use the definitions to implement compatible drivers/servers:
4 *
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. Neither the name of IBM nor the names of its contributors
15 * may be used to endorse or promote products derived from this software
16 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
18 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL IBM OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * Copyright (C) Red Hat, Inc., 2013-2015
30 * Copyright (C) Asias He <asias@redhat.com>, 2013
31 * Copyright (C) Stefan Hajnoczi <stefanha@redhat.com>, 2015
32 */
33
34 #ifndef _UAPI_LINUX_VIRTIO_VSOCK_H
35 #define _UAPI_LINUX_VIRTIO_VSOCK_H
36
37 #include <linux/types.h>
38 #include <linux/virtio_ids.h>
39 #include <linux/virtio_config.h>
40
41 struct virtio_vsock_config {
42 __le64 guest_cid;
43 } __attribute__((packed));
44
45 enum virtio_vsock_event_id {
46 VIRTIO_VSOCK_EVENT_TRANSPORT_RESET = 0,
47 };
48
49 struct virtio_vsock_event {
50 __le32 id;
51 } __attribute__((packed));
52
53 struct virtio_vsock_hdr {
54 __le64 src_cid;
55 __le64 dst_cid;
56 __le32 src_port;
57 __le32 dst_port;
58 __le32 len;
59 __le16 type; /* enum virtio_vsock_type */
60 __le16 op; /* enum virtio_vsock_op */
61 __le32 flags;
62 __le32 buf_alloc;
63 __le32 fwd_cnt;
64 } __attribute__((packed));
65
66 enum virtio_vsock_type {
67 VIRTIO_VSOCK_TYPE_STREAM = 1,
68 };
69
70 enum virtio_vsock_op {
71 VIRTIO_VSOCK_OP_INVALID = 0,
72
73 /* Connect operations */
74 VIRTIO_VSOCK_OP_REQUEST = 1,
75 VIRTIO_VSOCK_OP_RESPONSE = 2,
76 VIRTIO_VSOCK_OP_RST = 3,
77 VIRTIO_VSOCK_OP_SHUTDOWN = 4,
78
79 /* To send payload */
80 VIRTIO_VSOCK_OP_RW = 5,
81
82 /* Tell the peer our credit info */
83 VIRTIO_VSOCK_OP_CREDIT_UPDATE = 6,
84 /* Request the peer to send the credit info to us */
85 VIRTIO_VSOCK_OP_CREDIT_REQUEST = 7,
86 };
87
88 /* VIRTIO_VSOCK_OP_SHUTDOWN flags values */
89 enum virtio_vsock_shutdown {
90 VIRTIO_VSOCK_SHUTDOWN_RCV = 1,
91 VIRTIO_VSOCK_SHUTDOWN_SEND = 2,
92 };
93
94 #endif /* _UAPI_LINUX_VIRTIO_VSOCK_H */