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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_VOSCK_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 | __le32 guest_cid; | |
43 | __le32 max_virtqueue_pairs; | |
44 | }; | |
45 | ||
46 | struct virtio_vsock_hdr { | |
47 | __le32 src_cid; | |
48 | __le32 src_port; | |
49 | __le32 dst_cid; | |
50 | __le32 dst_port; | |
51 | __le32 len; | |
52 | __le16 type; /* enum virtio_vsock_type */ | |
53 | __le16 op; /* enum virtio_vsock_op */ | |
54 | __le32 flags; | |
55 | __le32 buf_alloc; | |
56 | __le32 fwd_cnt; | |
57 | }; | |
58 | ||
59 | enum virtio_vsock_type { | |
60 | VIRTIO_VSOCK_TYPE_STREAM = 1, | |
61 | VIRTIO_VSOCK_TYPE_DGRAM = 2, | |
62 | }; | |
63 | ||
64 | enum virtio_vsock_op { | |
65 | VIRTIO_VSOCK_OP_INVALID = 0, | |
66 | ||
67 | /* Connect operations */ | |
68 | VIRTIO_VSOCK_OP_REQUEST = 1, | |
69 | VIRTIO_VSOCK_OP_RESPONSE = 2, | |
70 | VIRTIO_VSOCK_OP_ACK = 3, | |
71 | VIRTIO_VSOCK_OP_RST = 4, | |
72 | VIRTIO_VSOCK_OP_SHUTDOWN = 5, | |
73 | ||
74 | /* To send payload */ | |
75 | VIRTIO_VSOCK_OP_RW = 6, | |
76 | ||
77 | /* Tell the peer our credit info */ | |
78 | VIRTIO_VSOCK_OP_CREDIT_UPDATE = 7, | |
79 | /* Request the peer to send the credit info to us */ | |
80 | VIRTIO_VSOCK_OP_CREDIT_REQUEST = 8, | |
81 | }; | |
82 | ||
83 | /* VIRTIO_VSOCK_OP_SHUTDOWN flags values */ | |
84 | enum virtio_vsock_shutdown { | |
85 | VIRTIO_VSOCK_SHUTDOWN_RCV = 1, | |
86 | VIRTIO_VSOCK_SHUTDOWN_SEND = 2, | |
87 | }; | |
88 | ||
89 | #endif /* _UAPI_LINUX_VIRTIO_VSOCK_H */ |