LXR linux/include/uapi/linux/virtio

   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
  41struct virtio_vsock_config {
  42        __le64 guest_cid;
  43} __attribute__((packed));
  44
  45enum virtio_vsock_event_id {
  46        VIRTIO_VSOCK_EVENT_TRANSPORT_RESET = 0,
  47};
  48
  49struct virtio_vsock_event {
  50        __le32 id;
  51} __attribute__((packed));
  52
  53struct 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
  66enum virtio_vsock_type {
  67        VIRTIO_VSOCK_TYPE_STREAM = 1,
  68};
  69
  70enum 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 */
  89enum virtio_vsock_shutdown {
  90        VIRTIO_VSOCK_SHUTDOWN_RCV = 1,
  91        VIRTIO_VSOCK_SHUTDOWN_SEND = 2,
  92};
  93
  94#endif /* _UAPI_LINUX_VIRTIO_VSOCK_H */
  95