54 lines
1.6 KiB
C
54 lines
1.6 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* VMware VMCI Driver
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*
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* Copyright (C) 2012 VMware, Inc. All rights reserved.
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*/
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#ifndef _VMCI_HANDLE_ARRAY_H_
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#define _VMCI_HANDLE_ARRAY_H_
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#include <linux/vmw_vmci_defs.h>
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#include <linux/limits.h>
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#include <linux/types.h>
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struct vmci_handle_arr {
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u32 capacity;
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u32 max_capacity;
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u32 size;
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u32 pad;
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struct vmci_handle entries[];
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};
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#define VMCI_HANDLE_ARRAY_HEADER_SIZE \
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offsetof(struct vmci_handle_arr, entries)
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/* Select a default capacity that results in a 64 byte sized array */
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#define VMCI_HANDLE_ARRAY_DEFAULT_CAPACITY 6
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/* Make sure that the max array size can be expressed by a u32 */
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#define VMCI_HANDLE_ARRAY_MAX_CAPACITY \
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((U32_MAX - VMCI_HANDLE_ARRAY_HEADER_SIZE - 1) / \
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sizeof(struct vmci_handle))
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struct vmci_handle_arr *vmci_handle_arr_create(u32 capacity, u32 max_capacity);
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void vmci_handle_arr_destroy(struct vmci_handle_arr *array);
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int vmci_handle_arr_append_entry(struct vmci_handle_arr **array_ptr,
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struct vmci_handle handle);
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struct vmci_handle vmci_handle_arr_remove_entry(struct vmci_handle_arr *array,
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struct vmci_handle
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entry_handle);
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struct vmci_handle vmci_handle_arr_remove_tail(struct vmci_handle_arr *array);
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struct vmci_handle
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vmci_handle_arr_get_entry(const struct vmci_handle_arr *array, u32 index);
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bool vmci_handle_arr_has_entry(const struct vmci_handle_arr *array,
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struct vmci_handle entry_handle);
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struct vmci_handle *vmci_handle_arr_get_handles(struct vmci_handle_arr *array);
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static inline u32 vmci_handle_arr_get_size(
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const struct vmci_handle_arr *array)
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{
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return array->size;
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}
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#endif /* _VMCI_HANDLE_ARRAY_H_ */
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