2 * Copyright (c) 2018 VMware, Inc.
4 * SPDX-License-Identifier: (BSD-2-Clause OR GPL-2.0)
9 /* VMCI Resource Access Control API. */
11 #ifndef _VMCI_RESOURCE_H_
12 #define _VMCI_RESOURCE_H_
14 #include "vmci_defs.h"
15 #include "vmci_hashtable.h"
16 #include "vmci_kernel_if.h"
18 #define RESOURCE_CONTAINER(ptr, type, member) \
19 ((type *)((char *)(ptr) - offsetof(type, member)))
21 typedef void(*vmci_resource_free_cb)(void *resource);
24 VMCI_RESOURCE_TYPE_ANY,
25 VMCI_RESOURCE_TYPE_API,
26 VMCI_RESOURCE_TYPE_GROUP,
27 VMCI_RESOURCE_TYPE_DATAGRAM,
28 VMCI_RESOURCE_TYPE_DOORBELL,
31 struct vmci_resource {
32 struct vmci_hash_entry hash_entry;
33 vmci_resource_type type;
34 /* Callback to free container object when refCount is 0. */
35 vmci_resource_free_cb container_free_cb;
36 /* Container object reference. */
37 void *container_object;
40 int vmci_resource_init(void);
41 void vmci_resource_exit(void);
42 void vmci_resource_sync(void);
44 vmci_id vmci_resource_get_id(vmci_id context_id);
46 int vmci_resource_add(struct vmci_resource *resource,
47 vmci_resource_type resource_type,
48 struct vmci_handle resource_handle,
49 vmci_resource_free_cb container_free_cb, void *container_object);
50 void vmci_resource_remove(struct vmci_handle resource_handle,
51 vmci_resource_type resource_type);
52 struct vmci_resource *vmci_resource_get(struct vmci_handle resource_handle,
53 vmci_resource_type resource_type);
54 void vmci_resource_hold(struct vmci_resource *resource);
55 int vmci_resource_release(struct vmci_resource *resource);
56 struct vmci_handle vmci_resource_handle(struct vmci_resource *resource);
58 #endif /* !_VMCI_RESOURCE_H_ */