1 /* 2 * VMware VMCI Driver 3 * 4 * Copyright (C) 2012 VMware, Inc. All rights reserved. 5 * 6 * This program is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License as published by the 8 * Free Software Foundation version 2 and no later version. 9 * 10 * This program is distributed in the hope that it will be useful, but 11 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 12 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * for more details. 14 */ 15 16 #ifndef _VMCI_HANDLE_ARRAY_H_ 17 #define _VMCI_HANDLE_ARRAY_H_ 18 19 #include <linux/vmw_vmci_defs.h> 20 #include <linux/limits.h> 21 #include <linux/types.h> 22 23 struct vmci_handle_arr { 24 u32 capacity; 25 u32 max_capacity; 26 u32 size; 27 u32 pad; 28 struct vmci_handle entries[]; 29 }; 30 31 #define VMCI_HANDLE_ARRAY_HEADER_SIZE \ 32 offsetof(struct vmci_handle_arr, entries) 33 /* Select a default capacity that results in a 64 byte sized array */ 34 #define VMCI_HANDLE_ARRAY_DEFAULT_CAPACITY 6 35 /* Make sure that the max array size can be expressed by a u32 */ 36 #define VMCI_HANDLE_ARRAY_MAX_CAPACITY \ 37 ((U32_MAX - VMCI_HANDLE_ARRAY_HEADER_SIZE - 1) / \ 38 sizeof(struct vmci_handle)) 39 40 struct vmci_handle_arr *vmci_handle_arr_create(u32 capacity, u32 max_capacity); 41 void vmci_handle_arr_destroy(struct vmci_handle_arr *array); 42 int vmci_handle_arr_append_entry(struct vmci_handle_arr **array_ptr, 43 struct vmci_handle handle); 44 struct vmci_handle vmci_handle_arr_remove_entry(struct vmci_handle_arr *array, 45 struct vmci_handle 46 entry_handle); 47 struct vmci_handle vmci_handle_arr_remove_tail(struct vmci_handle_arr *array); 48 struct vmci_handle 49 vmci_handle_arr_get_entry(const struct vmci_handle_arr *array, u32 index); 50 bool vmci_handle_arr_has_entry(const struct vmci_handle_arr *array, 51 struct vmci_handle entry_handle); 52 struct vmci_handle *vmci_handle_arr_get_handles(struct vmci_handle_arr *array); 53 vmci_handle_arr_get_size(const struct vmci_handle_arr * array)54static inline u32 vmci_handle_arr_get_size( 55 const struct vmci_handle_arr *array) 56 { 57 return array->size; 58 } 59 60 61 #endif /* _VMCI_HANDLE_ARRAY_H_ */ 62