| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame] | 1 | /* |
| 2 | * netlink/hashtable.h Netlink hashtable Utilities |
| 3 | * |
| 4 | * This library is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU Lesser General Public |
| 6 | * License as published by the Free Software Foundation version 2.1 |
| 7 | * of the License. |
| 8 | * |
| 9 | * Copyright (c) 2012 Cumulus Networks, Inc |
| 10 | */ |
| 11 | |
| 12 | #ifndef NETLINK_HASHTABLE_H_ |
| 13 | #define NETLINK_HASHTABLE_H_ |
| 14 | |
| 15 | #ifdef __cplusplus |
| 16 | extern "C" { |
| 17 | #endif |
| 18 | |
| 19 | typedef struct nl_hash_node { |
| 20 | uint32_t key; |
| 21 | uint32_t key_size; |
| 22 | struct nl_object * obj; |
| 23 | struct nl_hash_node * next; |
| 24 | } nl_hash_node_t; |
| 25 | |
| 26 | typedef struct nl_hash_table { |
| 27 | int size; |
| 28 | nl_hash_node_t ** nodes; |
| 29 | } nl_hash_table_t; |
| 30 | |
| 31 | /* Default hash table size */ |
| 32 | #define NL_MAX_HASH_ENTRIES 1024 |
| 33 | |
| 34 | /* Access Functions */ |
| 35 | extern nl_hash_table_t * nl_hash_table_alloc(int size); |
| 36 | extern void nl_hash_table_free(nl_hash_table_t *ht); |
| 37 | |
| 38 | extern int nl_hash_table_add(nl_hash_table_t *ht, |
| 39 | struct nl_object *obj); |
| 40 | extern int nl_hash_table_del(nl_hash_table_t *ht, |
| 41 | struct nl_object *obj); |
| 42 | |
| 43 | extern struct nl_object * nl_hash_table_lookup(nl_hash_table_t *ht, |
| 44 | struct nl_object *obj); |
| 45 | extern uint32_t nl_hash(void *k, size_t length, |
| 46 | uint32_t initval); |
| 47 | |
| 48 | #ifdef __cplusplus |
| 49 | } |
| 50 | #endif |
| 51 | |
| 52 | #endif /* NETLINK_HASHTABLE_H_ */ |