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e2be04c7f9
Many user space API headers have licensing information, which is either
incomplete, badly formatted or just a shorthand for referring to the
license under which the file is supposed to be. This makes it hard for
compliance tools to determine the correct license.
Update these files with an SPDX license identifier. The identifier was
chosen based on the license information in the file.
GPL/LGPL licensed headers get the matching GPL/LGPL SPDX license
identifier with the added 'WITH Linux-syscall-note' exception, which is
the officially assigned exception identifier for the kernel syscall
exception:
NOTE! This copyright does *not* cover user programs that use kernel
services by normal system calls - this is merely considered normal use
of the kernel, and does *not* fall under the heading of "derived work".
This exception makes it possible to include GPL headers into non GPL
code, without confusing license compliance tools.
Headers which have either explicit dual licensing or are just licensed
under a non GPL license are updated with the corresponding SPDX
identifier and the GPLv2 with syscall exception identifier. The format
is:
((GPL-2.0 WITH Linux-syscall-note) OR SPDX-ID-OF-OTHER-LICENSE)
SPDX license identifiers are a legally binding shorthand, which can be
used instead of the full boiler plate text. The update does not remove
existing license information as this has to be done on a case by case
basis and the copyright holders might have to be consulted. This will
happen in a separate step.
This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne. See the previous patch in this series for the
methodology of how this patch was researched.
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
158 lines
5.2 KiB
C
158 lines
5.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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/*
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* VMware vSockets Driver
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*
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* Copyright (C) 2007-2013 VMware, Inc. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation version 2 and no later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*/
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#ifndef _UAPI_VM_SOCKETS_H
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#define _UAPI_VM_SOCKETS_H
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#include <linux/socket.h>
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/* Option name for STREAM socket buffer size. Use as the option name in
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* setsockopt(3) or getsockopt(3) to set or get an unsigned long long that
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* specifies the size of the buffer underlying a vSockets STREAM socket.
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* Value is clamped to the MIN and MAX.
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*/
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#define SO_VM_SOCKETS_BUFFER_SIZE 0
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/* Option name for STREAM socket minimum buffer size. Use as the option name
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* in setsockopt(3) or getsockopt(3) to set or get an unsigned long long that
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* specifies the minimum size allowed for the buffer underlying a vSockets
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* STREAM socket.
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*/
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#define SO_VM_SOCKETS_BUFFER_MIN_SIZE 1
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/* Option name for STREAM socket maximum buffer size. Use as the option name
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* in setsockopt(3) or getsockopt(3) to set or get an unsigned long long
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* that specifies the maximum size allowed for the buffer underlying a
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* vSockets STREAM socket.
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*/
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#define SO_VM_SOCKETS_BUFFER_MAX_SIZE 2
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/* Option name for socket peer's host-specific VM ID. Use as the option name
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* in getsockopt(3) to get a host-specific identifier for the peer endpoint's
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* VM. The identifier is a signed integer.
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* Only available for hypervisor endpoints.
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*/
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#define SO_VM_SOCKETS_PEER_HOST_VM_ID 3
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/* Option name for determining if a socket is trusted. Use as the option name
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* in getsockopt(3) to determine if a socket is trusted. The value is a
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* signed integer.
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*/
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#define SO_VM_SOCKETS_TRUSTED 5
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/* Option name for STREAM socket connection timeout. Use as the option name
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* in setsockopt(3) or getsockopt(3) to set or get the connection
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* timeout for a STREAM socket.
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*/
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#define SO_VM_SOCKETS_CONNECT_TIMEOUT 6
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/* Option name for using non-blocking send/receive. Use as the option name
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* for setsockopt(3) or getsockopt(3) to set or get the non-blocking
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* transmit/receive flag for a STREAM socket. This flag determines whether
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* send() and recv() can be called in non-blocking contexts for the given
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* socket. The value is a signed integer.
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*
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* This option is only relevant to kernel endpoints, where descheduling the
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* thread of execution is not allowed, for example, while holding a spinlock.
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* It is not to be confused with conventional non-blocking socket operations.
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*
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* Only available for hypervisor endpoints.
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*/
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#define SO_VM_SOCKETS_NONBLOCK_TXRX 7
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/* The vSocket equivalent of INADDR_ANY. This works for the svm_cid field of
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* sockaddr_vm and indicates the context ID of the current endpoint.
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*/
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#define VMADDR_CID_ANY -1U
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/* Bind to any available port. Works for the svm_port field of
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* sockaddr_vm.
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*/
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#define VMADDR_PORT_ANY -1U
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/* Use this as the destination CID in an address when referring to the
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* hypervisor. VMCI relies on it being 0, but this would be useful for other
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* transports too.
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*/
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#define VMADDR_CID_HYPERVISOR 0
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/* This CID is specific to VMCI and can be considered reserved (even VMCI
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* doesn't use it anymore, it's a legacy value from an older release).
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*/
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#define VMADDR_CID_RESERVED 1
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/* Use this as the destination CID in an address when referring to the host
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* (any process other than the hypervisor). VMCI relies on it being 2, but
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* this would be useful for other transports too.
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*/
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#define VMADDR_CID_HOST 2
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/* Invalid vSockets version. */
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#define VM_SOCKETS_INVALID_VERSION -1U
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/* The epoch (first) component of the vSockets version. A single byte
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* representing the epoch component of the vSockets version.
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*/
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#define VM_SOCKETS_VERSION_EPOCH(_v) (((_v) & 0xFF000000) >> 24)
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/* The major (second) component of the vSockets version. A single byte
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* representing the major component of the vSockets version. Typically
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* changes for every major release of a product.
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*/
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#define VM_SOCKETS_VERSION_MAJOR(_v) (((_v) & 0x00FF0000) >> 16)
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/* The minor (third) component of the vSockets version. Two bytes representing
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* the minor component of the vSockets version.
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*/
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#define VM_SOCKETS_VERSION_MINOR(_v) (((_v) & 0x0000FFFF))
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/* Address structure for vSockets. The address family should be set to
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* AF_VSOCK. The structure members should all align on their natural
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* boundaries without resorting to compiler packing directives. The total size
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* of this structure should be exactly the same as that of struct sockaddr.
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*/
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struct sockaddr_vm {
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__kernel_sa_family_t svm_family;
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unsigned short svm_reserved1;
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unsigned int svm_port;
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unsigned int svm_cid;
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unsigned char svm_zero[sizeof(struct sockaddr) -
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sizeof(sa_family_t) -
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sizeof(unsigned short) -
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sizeof(unsigned int) - sizeof(unsigned int)];
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};
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#define IOCTL_VM_SOCKETS_GET_LOCAL_CID _IO(7, 0xb9)
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#endif /* _UAPI_VM_SOCKETS_H */
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