1/*
2 * NetLabel Domain Hash Table
3 *
4 * This file manages the domain hash table that NetLabel uses to determine
5 * which network labeling protocol to use for a given domain.  The NetLabel
6 * system manages static and dynamic label mappings for network protocols such
7 * as CIPSO and RIPSO.
8 *
9 * Author: Paul Moore <paul.moore@hp.com>
10 *
11 */
12
13/*
14 * (c) Copyright Hewlett-Packard Development Company, L.P., 2006
15 *
16 * This program is free software;  you can redistribute it and/or modify
17 * it under the terms of the GNU General Public License as published by
18 * the Free Software Foundation; either version 2 of the License, or
19 * (at your option) any later version.
20 *
21 * This program is distributed in the hope that it will be useful,
22 * but WITHOUT ANY WARRANTY;  without even the implied warranty of
23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
24 * the GNU General Public License for more details.
25 *
26 * You should have received a copy of the GNU General Public License
27 * along with this program;  if not, write to the Free Software
28 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
29 *
30 */
31
32#ifndef _NETLABEL_DOMAINHASH_H
33#define _NETLABEL_DOMAINHASH_H
34
35#include <linux/types.h>
36#include <linux/rcupdate.h>
37#include <linux/list.h>
38
39/* Domain hash table size */
40#define NETLBL_DOMHSH_BITSIZE       7
41
42/* Domain mapping definition struct */
43struct netlbl_dom_map {
44	char *domain;
45	u32 type;
46	union {
47		struct cipso_v4_doi *cipsov4;
48	} type_def;
49
50	u32 valid;
51	struct list_head list;
52	struct rcu_head rcu;
53};
54
55/* init function */
56int netlbl_domhsh_init(u32 size);
57
58/* Manipulate the domain hash table */
59int netlbl_domhsh_add(struct netlbl_dom_map *entry,
60		      struct netlbl_audit *audit_info);
61int netlbl_domhsh_add_default(struct netlbl_dom_map *entry,
62			      struct netlbl_audit *audit_info);
63int netlbl_domhsh_remove_default(struct netlbl_audit *audit_info);
64struct netlbl_dom_map *netlbl_domhsh_getentry(const char *domain);
65int netlbl_domhsh_walk(u32 *skip_bkt,
66		     u32 *skip_chain,
67		     int (*callback) (struct netlbl_dom_map *entry, void *arg),
68		     void *cb_arg);
69
70#endif
71