1/*- 2 * Copyright (c) 2018 VMware, Inc. 3 * 4 * SPDX-License-Identifier: (BSD-2-Clause OR GPL-2.0) 5 * 6 * $FreeBSD$ 7 */ 8 9/* VMCI Resource Access Control API. */ 10 11#ifndef _VMCI_RESOURCE_H_ 12#define _VMCI_RESOURCE_H_ 13 14#include "vmci_defs.h" 15#include "vmci_hashtable.h" 16#include "vmci_kernel_if.h" 17 18#define RESOURCE_CONTAINER(ptr, type, member) \ 19 ((type *)((char *)(ptr) - offsetof(type, member))) 20 21typedef void(*vmci_resource_free_cb)(void *resource); 22 23typedef enum { 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, 29} vmci_resource_type; 30 31struct 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; 38}; 39 40int vmci_resource_init(void); 41void vmci_resource_exit(void); 42void vmci_resource_sync(void); 43 44vmci_id vmci_resource_get_id(vmci_id context_id); 45 46int 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); 50void vmci_resource_remove(struct vmci_handle resource_handle, 51 vmci_resource_type resource_type); 52struct vmci_resource *vmci_resource_get(struct vmci_handle resource_handle, 53 vmci_resource_type resource_type); 54void vmci_resource_hold(struct vmci_resource *resource); 55int vmci_resource_release(struct vmci_resource *resource); 56struct vmci_handle vmci_resource_handle(struct vmci_resource *resource); 57 58#endif /* !_VMCI_RESOURCE_H_ */ 59