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     =ˆÅÐƒu Ä¿Î é    =/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
 * VMware vSockets Driver
 *
 * Copyright (C) 2007-2013 VMware, Inc. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation version 2 and no later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 */

#ifndef _UAPI_VM_SOCKETS_H
#define _UAPI_VM_SOCKETS_H

#include <linux/socket.h>
#include <linux/types.h>

/* Option name for STREAM socket buffer size.  Use as the option name in
 * setsockopt(3) or getsockopt(3) to set or get an unsigned long long that
 * specifies the size of the buffer underlying a vSockets STREAM socket.
 * Value is clamped to the MIN and MAX.
 */

#define SO_VM_SOCKETS_BUFFER_SIZE 0

/* Option name for STREAM socket minimum buffer size.  Use as the option name
 * in setsockopt(3) or getsockopt(3) to set or get an unsigned long long that
 * specifies the minimum size allowed for the buffer underlying a vSockets
 * STREAM socket.
 */

#define SO_VM_SOCKETS_BUFFER_MIN_SIZE 1

/* Option name for STREAM socket maximum buffer size.  Use as the option name
 * in setsockopt(3) or getsockopt(3) to set or get an unsigned long long
 * that specifies the maximum size allowed for the buffer underlying a
 * vSockets STREAM socket.
 */

#define SO_VM_SOCKETS_BUFFER_MAX_SIZE 2

/* Option name for socket peer's host-specific VM ID.  Use as the option name
 * in getsockopt(3) to get a host-specific identifier for the peer endpoint's
 * VM.  The identifier is a signed integer.
 * Only available for hypervisor endpoints.
 */

#define SO_VM_SOCKETS_PEER_HOST_VM_ID 3

/* Option name for determining if a socket is trusted.  Use as the option name
 * in getsockopt(3) to determine if a socket is trusted.  The value is a
 * signed integer.
 */

#define SO_VM_SOCKETS_TRUSTED 5

/* Option name for STREAM socket connection timeout.  Use as the option name
 * in setsockopt(3) or getsockopt(3) to set or get the connection
 * timeout for a STREAM socket.
 */

#define SO_VM_SOCKETS_CONNECT_TIMEOUT_OLD 6

/* Option name for using non-blocking send/receive.  Use as the option name
 * for setsockopt(3) or getsockopt(3) to set or get the non-blocking
 * transmit/receive flag for a STREAM socket.  This flag determines whether
 * send() and recv() can be called in non-blocking contexts for the given
 * socket.  The value is a signed integer.
 *
 * This option is only relevant to kernel endpoints, where descheduling the
 * thread of execution is not allowed, for example, while holding a spinlock.
 * It is not to be confused with conventional non-blocking socket operations.
 *
 * Only available for hypervisor endpoints.
 */

#define SO_VM_SOCKETS_NONBLOCK_TXRX 7

#define SO_VM_SOCKETS_CONNECT_TIMEOUT_NEW 8

#if !defined(__KERNEL__)
#if __BITS_PER_LONG == 64 || (defined(__x86_64__) && defined(__ILP32__))
#define SO_VM_SOCKETS_CONNECT_TIMEOUT SO_VM_SOCKETS_CONNECT_TIMEOUT_OLD
#else
#define SO_VM_SOCKETS_CONNECT_TIMEOUT \
	(sizeof(time_t) == sizeof(__kernel_long_t) ? SO_VM_SOCKETS_CONNECT_TIMEOUT_OLD : SO_VM_SOCKETS_CONNECT_TIMEOUT_NEW)
#endif
#endif

/* The vSocket equivalent of INADDR_ANY.  This works for the svm_cid field of
 * sockaddr_vm and indicates the context ID of the current endpoint.
 */

#define VMADDR_CID_ANY -1U

/* Bind to any available port.  Works for the svm_port field of
 * sockaddr_vm.
 */

#define VMADDR_PORT_ANY -1U

/* Use this as the destination CID in an address when referring to the
 * hypervisor.  VMCI relies on it being 0, but this would be useful for other
 * transports too.
 */

#define VMADDR_CID_HYPERVISOR 0

/* Use this as the destination CID in an address when referring to the
 * local commun