mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-27 06:34:11 +08:00
82a54d0ebb
This is useful for other VSOCK transport implemented outside the net/vmw_vsock/ directory to use these headers. Signed-off-by: Asias He <asias@redhat.com> Acked-by: Andy King <acking@vmware.com> Signed-off-by: David S. Miller <davem@davemloft.net>
76 lines
1.9 KiB
C
76 lines
1.9 KiB
C
/*
|
|
* VMware vSockets Driver
|
|
*
|
|
* Copyright (C) 2007-2012 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.
|
|
*/
|
|
|
|
#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)
|
|
{
|
|
if (!addr)
|
|
return -EFAULT;
|
|
|
|
if (addr->svm_family != AF_VSOCK)
|
|
return -EAFNOSUPPORT;
|
|
|
|
if (addr->svm_zero[0] != 0)
|
|
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);
|