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 /* The feature bitmap for virtio vsock */ 42 #define VIRTIO_VSOCK_F_SEQPACKET 1 /* SOCK_SEQPACKET supported */ 43 44 struct virtio_vsock_config { 45 uint64_t guest_cid; 46 } QEMU_PACKED; 47 48 enum virtio_vsock_event_id { 49 VIRTIO_VSOCK_EVENT_TRANSPORT_RESET = 0, 50 }; 51 52 struct virtio_vsock_event { 53 uint32_t id; 54 } QEMU_PACKED; 55 56 struct virtio_vsock_hdr { 57 uint64_t src_cid; 58 uint64_t dst_cid; 59 uint32_t src_port; 60 uint32_t dst_port; 61 uint32_t len; 62 uint16_t type; /* enum virtio_vsock_type */ 63 uint16_t op; /* enum virtio_vsock_op */ 64 uint32_t flags; 65 uint32_t buf_alloc; 66 uint32_t fwd_cnt; 67 } QEMU_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_EOR = 1, 101 }; 102 103 #endif /* _LINUX_VIRTIO_VSOCK_H */ 104