From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- net/vmw_vsock/vsock_addr.c | 69 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 69 insertions(+) create mode 100644 net/vmw_vsock/vsock_addr.c (limited to 'net/vmw_vsock/vsock_addr.c') diff --git a/net/vmw_vsock/vsock_addr.c b/net/vmw_vsock/vsock_addr.c new file mode 100644 index 000000000..223b9660a --- /dev/null +++ b/net/vmw_vsock/vsock_addr.c @@ -0,0 +1,69 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * VMware vSockets Driver + * + * Copyright (C) 2007-2012 VMware, Inc. All rights reserved. + */ + +#include +#include +#include +#include +#include + +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); -- cgit v1.2.3