163a93856SMark Peek /*- 23eeb7511SMark Peek * Copyright (c) 2018 VMware, Inc. 363a93856SMark Peek * 48c302b2eSMark Peek * SPDX-License-Identifier: (BSD-2-Clause OR GPL-2.0) 563a93856SMark Peek */ 663a93856SMark Peek 763a93856SMark Peek /* Hash table for use in the APIs. */ 863a93856SMark Peek 963a93856SMark Peek #ifndef _VMCI_HASHTABLE_H_ 1063a93856SMark Peek #define _VMCI_HASHTABLE_H_ 1163a93856SMark Peek 1263a93856SMark Peek #include "vmci_defs.h" 1363a93856SMark Peek #include "vmci_kernel_if.h" 1463a93856SMark Peek 1563a93856SMark Peek struct vmci_hash_entry { 1663a93856SMark Peek struct vmci_handle handle; 1763a93856SMark Peek int ref_count; 1863a93856SMark Peek struct vmci_hash_entry *next; 1963a93856SMark Peek }; 2063a93856SMark Peek 2163a93856SMark Peek struct vmci_hashtable { 2263a93856SMark Peek struct vmci_hash_entry **entries; 2363a93856SMark Peek /* Number of buckets in above array. */ 2463a93856SMark Peek int size; 2563a93856SMark Peek vmci_lock lock; 2663a93856SMark Peek }; 2763a93856SMark Peek 2863a93856SMark Peek struct vmci_hashtable *vmci_hashtable_create(int size); 2963a93856SMark Peek void vmci_hashtable_destroy(struct vmci_hashtable *table); 3063a93856SMark Peek void vmci_hashtable_init_entry(struct vmci_hash_entry *entry, 3163a93856SMark Peek struct vmci_handle handle); 3263a93856SMark Peek int vmci_hashtable_add_entry(struct vmci_hashtable *table, 3363a93856SMark Peek struct vmci_hash_entry *entry); 3463a93856SMark Peek int vmci_hashtable_remove_entry(struct vmci_hashtable *table, 3563a93856SMark Peek struct vmci_hash_entry *entry); 3663a93856SMark Peek struct vmci_hash_entry *vmci_hashtable_get_entry(struct vmci_hashtable *table, 3763a93856SMark Peek struct vmci_handle handle); 3863a93856SMark Peek void vmci_hashtable_hold_entry(struct vmci_hashtable *table, 3963a93856SMark Peek struct vmci_hash_entry *entry); 4063a93856SMark Peek int vmci_hashtable_release_entry(struct vmci_hashtable *table, 4163a93856SMark Peek struct vmci_hash_entry *entry); 4263a93856SMark Peek bool vmci_hashtable_entry_exists(struct vmci_hashtable *table, 4363a93856SMark Peek struct vmci_handle handle); 4463a93856SMark Peek void vmci_hashtable_sync(struct vmci_hashtable *table); 4563a93856SMark Peek 4663a93856SMark Peek #endif /* !_VMCI_HASHTABLE_H_ */ 47