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// SPDX-License-Identifier: GPL-2.0-only
/*
* VMware vSockets Driver
*
* Copyright (C) 2007-2012 VMware, Inc. All rights reserved.
*/
#include <linux/types.h>
#include <linux/socket.h>
#include <linux/stddef.h>
#include <net/sock.h>
#include <net/vsock_addr.h>
void vsock_addr_init(struct sockaddr_vm *addr, u32 cid, u32 port)
{
memset(addr, 0, sizeof(*addr));
addr->svm_family = AF_VSOCK;
addr->svm_cid = cid;
addr->svm_port = port;
}
EXPORT_SYMBOL_GPL(vsock_addr_init);
int vsock_addr_validate(const struct sockaddr_vm *addr)
{
__u8 svm_valid_flags = VMADDR_FLAG_TO_HOST;
if (!addr)
return -EFAULT;
if (addr->svm_family != AF_VSOCK)
return -EAFNOSUPPORT;
if (addr->svm_flags & ~svm_valid_flags)
return -EINVAL;
return 0;
}
EXPORT_SYMBOL_GPL(vsock_addr_validate);
bool vsock_addr_bound(const struct sockaddr_vm *addr)
{
return addr->svm_port != VMADDR_PORT_ANY;
}
EXPORT_SYMBOL_GPL(vsock_addr_bound);
void vsock_addr_unbind(struct sockaddr_vm *addr)
{
vsock_addr_init(addr, VMADDR_CID_ANY, VMADDR_PORT_ANY);
}
EXPORT_SYMBOL_GPL(vsock_addr_unbind);
bool vsock_addr_equals_addr(const struct sockaddr_vm *addr,
const struct sockaddr_vm *other)
{
return addr->svm_cid == other->svm_cid &&
addr->svm_port == other->svm_port;
}
EXPORT_SYMBOL_GPL(vsock_addr_equals_addr);
int vsock_addr_cast(const struct sockaddr *addr,
size_t len, struct sockaddr_vm **out_addr)
{
if (len < sizeof(**out_addr))
return -EFAULT;
*out_addr = (struct sockaddr_vm *)addr;
return vsock_addr_validate(*out_addr);
}
EXPORT_SYMBOL_GPL(vsock_addr_cast);
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