| 1 | /*
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| 2 | * Copyright (c) 2011 Radim Vansa
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | /**
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| 30 | * @addtogroup libnic
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| 31 | * @{
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| 32 | */
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| 33 | /**
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| 34 | * @file
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| 35 | * @brief Generic hash-set based database of addresses
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| 36 | */
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| 37 |
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| 38 | #ifndef __NIC_ADDR_DB_H__
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| 39 | #define __NIC_ADDR_DB_H__
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| 40 |
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| 41 | #ifndef LIBNIC_INTERNAL
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| 42 | #error "This is internal libnic header, please don't include it"
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| 43 | #endif
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| 44 |
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| 45 | #include <adt/hash_set.h>
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| 46 |
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| 47 | /**
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| 48 | * Initial size of DB's hash set
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| 49 | */
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| 50 | #define NIC_ADDR_DB_INIT_SIZE 8
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| 51 | /**
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| 52 | * Maximal length of addresses in the DB (in bytes).
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| 53 | */
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| 54 | #define NIC_ADDR_MAX_LENGTH 16
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| 55 |
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| 56 | /**
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| 57 | * Fibril-safe database of addresses implemented using hash set.
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| 58 | */
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| 59 | typedef struct nic_addr_db {
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| 60 | hash_set_t set;
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| 61 | size_t addr_len;
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| 62 | } nic_addr_db_t;
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| 63 |
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| 64 | /**
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| 65 | * Helper structure for keeping the address in the hash set.
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| 66 | */
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| 67 | typedef struct nic_addr_entry {
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| 68 | link_t item;
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| 69 | size_t addr_len;
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| 70 | uint8_t addr[NIC_ADDR_MAX_LENGTH];
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| 71 | } nic_addr_entry_t;
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| 72 |
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| 73 | extern int nic_addr_db_init(nic_addr_db_t *db, size_t addr_len);
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| 74 | extern void nic_addr_db_clear(nic_addr_db_t *db);
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| 75 | extern void nic_addr_db_destroy(nic_addr_db_t *db);
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| 76 | extern size_t nic_addr_db_count(const nic_addr_db_t *db);
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| 77 | extern int nic_addr_db_insert(nic_addr_db_t *db, const uint8_t *addr);
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| 78 | extern int nic_addr_db_remove(nic_addr_db_t *db, const uint8_t *addr);
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| 79 | extern void nic_addr_db_remove_selected(nic_addr_db_t *db,
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| 80 | int (*func)(const uint8_t *, void *), void *arg);
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| 81 | extern int nic_addr_db_contains(const nic_addr_db_t *db, const uint8_t *addr);
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| 82 | extern void nic_addr_db_foreach(const nic_addr_db_t *db,
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| 83 | void (*func)(const uint8_t *, void *), void *arg);
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| 84 |
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| 85 | #endif
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| 86 |
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| 87 | /** @}
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| 88 | */
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