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 _LINUX_VIRTIO_VSOCK_H 35 #define _LINUX_VIRTIO_VSOCK_H 36 37 #include "standard-headers/linux/types.h" 38 #include "standard-headers/linux/virtio_ids.h" 39 #include "standard-headers/linux/virtio_config.h" 40 41 struct virtio_vsock_config { 42 uint64_t guest_cid; 43 } QEMU_PACKED; 44 45 enum virtio_vsock_event_id { 46 VIRTIO_VSOCK_EVENT_TRANSPORT_RESET = 0, 47 }; 48 49 struct virtio_vsock_event { 50 uint32_t id; 51 } QEMU_PACKED; 52 53 struct virtio_vsock_hdr { 54 uint64_t src_cid; 55 uint64_t dst_cid; 56 uint32_t src_port; 57 uint32_t dst_port; 58 uint32_t len; 59 uint16_t type; /* enum virtio_vsock_type */ 60 uint16_t op; /* enum virtio_vsock_op */ 61 uint32_t flags; 62 uint32_t buf_alloc; 63 uint32_t fwd_cnt; 64 } QEMU_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 /* _LINUX_VIRTIO_VSOCK_H */ 95