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 | /* The feature bitmap for virtio vsock */ |
42 | #define VIRTIO_VSOCK_F_SEQPACKET 1 /* SOCK_SEQPACKET supported */ |
43 | |
44 | struct virtio_vsock_config { |
45 | __le64 guest_cid; |
46 | } __attribute__((packed)); |
47 | |
48 | enum virtio_vsock_event_id { |
49 | VIRTIO_VSOCK_EVENT_TRANSPORT_RESET = 0, |
50 | }; |
51 | |
52 | struct virtio_vsock_event { |
53 | __le32 id; |
54 | } __attribute__((packed)); |
55 | |
56 | struct virtio_vsock_hdr { |
57 | __le64 src_cid; |
58 | __le64 dst_cid; |
59 | __le32 src_port; |
60 | __le32 dst_port; |
61 | __le32 len; |
62 | __le16 type; /* enum virtio_vsock_type */ |
63 | __le16 op; /* enum virtio_vsock_op */ |
64 | __le32 flags; |
65 | __le32 buf_alloc; |
66 | __le32 fwd_cnt; |
67 | } __attribute__((packed)); |
68 | |
69 | enum virtio_vsock_type { |
70 | VIRTIO_VSOCK_TYPE_STREAM = 1, |
71 | VIRTIO_VSOCK_TYPE_SEQPACKET = 2, |
72 | }; |
73 | |
74 | enum virtio_vsock_op { |
75 | VIRTIO_VSOCK_OP_INVALID = 0, |
76 | |
77 | /* Connect operations */ |
78 | VIRTIO_VSOCK_OP_REQUEST = 1, |
79 | VIRTIO_VSOCK_OP_RESPONSE = 2, |
80 | VIRTIO_VSOCK_OP_RST = 3, |
81 | VIRTIO_VSOCK_OP_SHUTDOWN = 4, |
82 | |
83 | /* To send payload */ |
84 | VIRTIO_VSOCK_OP_RW = 5, |
85 | |
86 | /* Tell the peer our credit info */ |
87 | VIRTIO_VSOCK_OP_CREDIT_UPDATE = 6, |
88 | /* Request the peer to send the credit info to us */ |
89 | VIRTIO_VSOCK_OP_CREDIT_REQUEST = 7, |
90 | }; |
91 | |
92 | /* VIRTIO_VSOCK_OP_SHUTDOWN flags values */ |
93 | enum virtio_vsock_shutdown { |
94 | VIRTIO_VSOCK_SHUTDOWN_RCV = 1, |
95 | VIRTIO_VSOCK_SHUTDOWN_SEND = 2, |
96 | }; |
97 | |
98 | /* VIRTIO_VSOCK_OP_RW flags values */ |
99 | enum virtio_vsock_rw { |
100 | VIRTIO_VSOCK_SEQ_EOM = 1, |
101 | VIRTIO_VSOCK_SEQ_EOR = 2, |
102 | }; |
103 | |
104 | #endif /* _UAPI_LINUX_VIRTIO_VSOCK_H */ |
105 | |