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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@paul-moore.com>
10 *
11 */
12
13/*
14 * (c) Copyright Hewlett-Packard Development Company, L.P., 2006, 2008
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#include "netlabel_addrlist.h"
40
41/* Domain hash table size */
42/* XXX - currently this number is an uneducated guess */
43#define NETLBL_DOMHSH_BITSIZE 7
44
45/* Domain mapping definition structures */
46#define netlbl_domhsh_addr4_entry(iter) \
47 container_of(iter, struct netlbl_domaddr4_map, list)
48struct netlbl_domaddr4_map {
49 u32 type;
50 union {
51 struct cipso_v4_doi *cipsov4;
52 } type_def;
53
54 struct netlbl_af4list list;
55};
56#define netlbl_domhsh_addr6_entry(iter) \
57 container_of(iter, struct netlbl_domaddr6_map, list)
58struct netlbl_domaddr6_map {
59 u32 type;
60
61 /* NOTE: no 'type_def' union needed at present since we don't currently
62 * support any IPv6 labeling protocols */
63
64 struct netlbl_af6list list;
65};
66struct netlbl_domaddr_map {
67 struct list_head list4;
68 struct list_head list6;
69};
70struct netlbl_dom_map {
71 char *domain;
72 u32 type;
73 union {
74 struct cipso_v4_doi *cipsov4;
75 struct netlbl_domaddr_map *addrsel;
76 } type_def;
77
78 u32 valid;
79 struct list_head list;
80 struct rcu_head rcu;
81};
82
83/* init function */
84int netlbl_domhsh_init(u32 size);
85
86/* Manipulate the domain hash table */
87int netlbl_domhsh_add(struct netlbl_dom_map *entry,
88 struct netlbl_audit *audit_info);
89int netlbl_domhsh_add_default(struct netlbl_dom_map *entry,
90 struct netlbl_audit *audit_info);
91int netlbl_domhsh_remove_entry(struct netlbl_dom_map *entry,
92 struct netlbl_audit *audit_info);
93int netlbl_domhsh_remove_af4(const char *domain,
94 const struct in_addr *addr,
95 const struct in_addr *mask,
96 struct netlbl_audit *audit_info);
97int netlbl_domhsh_remove(const char *domain, struct netlbl_audit *audit_info);
98int netlbl_domhsh_remove_default(struct netlbl_audit *audit_info);
99struct netlbl_dom_map *netlbl_domhsh_getentry(const char *domain);
100struct netlbl_domaddr4_map *netlbl_domhsh_getentry_af4(const char *domain,
101 __be32 addr);
102int netlbl_domhsh_walk(u32 *skip_bkt,
103 u32 *skip_chain,
104 int (*callback) (struct netlbl_dom_map *entry, void *arg),
105 void *cb_arg);
106
107#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
108struct netlbl_domaddr6_map *netlbl_domhsh_getentry_af6(const char *domain,
109 const struct in6_addr *addr);
110#endif /* IPv6 */
111
112#endif
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@paul-moore.com>
10 *
11 */
12
13/*
14 * (c) Copyright Hewlett-Packard Development Company, L.P., 2006, 2008
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, see <http://www.gnu.org/licenses/>.
28 *
29 */
30
31#ifndef _NETLABEL_DOMAINHASH_H
32#define _NETLABEL_DOMAINHASH_H
33
34#include <linux/types.h>
35#include <linux/rcupdate.h>
36#include <linux/list.h>
37
38#include "netlabel_addrlist.h"
39
40/* Domain hash table size */
41/* XXX - currently this number is an uneducated guess */
42#define NETLBL_DOMHSH_BITSIZE 7
43
44/* Domain mapping definition structures */
45struct netlbl_domaddr_map {
46 struct list_head list4;
47 struct list_head list6;
48};
49struct netlbl_dommap_def {
50 u32 type;
51 union {
52 struct netlbl_domaddr_map *addrsel;
53 struct cipso_v4_doi *cipso;
54 };
55};
56#define netlbl_domhsh_addr4_entry(iter) \
57 container_of(iter, struct netlbl_domaddr4_map, list)
58struct netlbl_domaddr4_map {
59 struct netlbl_dommap_def def;
60
61 struct netlbl_af4list list;
62};
63#define netlbl_domhsh_addr6_entry(iter) \
64 container_of(iter, struct netlbl_domaddr6_map, list)
65struct netlbl_domaddr6_map {
66 struct netlbl_dommap_def def;
67
68 struct netlbl_af6list list;
69};
70
71struct netlbl_dom_map {
72 char *domain;
73 struct netlbl_dommap_def def;
74
75 u32 valid;
76 struct list_head list;
77 struct rcu_head rcu;
78};
79
80/* init function */
81int netlbl_domhsh_init(u32 size);
82
83/* Manipulate the domain hash table */
84int netlbl_domhsh_add(struct netlbl_dom_map *entry,
85 struct netlbl_audit *audit_info);
86int netlbl_domhsh_add_default(struct netlbl_dom_map *entry,
87 struct netlbl_audit *audit_info);
88int netlbl_domhsh_remove_entry(struct netlbl_dom_map *entry,
89 struct netlbl_audit *audit_info);
90int netlbl_domhsh_remove_af4(const char *domain,
91 const struct in_addr *addr,
92 const struct in_addr *mask,
93 struct netlbl_audit *audit_info);
94int netlbl_domhsh_remove(const char *domain, struct netlbl_audit *audit_info);
95int netlbl_domhsh_remove_default(struct netlbl_audit *audit_info);
96struct netlbl_dom_map *netlbl_domhsh_getentry(const char *domain);
97struct netlbl_dommap_def *netlbl_domhsh_getentry_af4(const char *domain,
98 __be32 addr);
99#if IS_ENABLED(CONFIG_IPV6)
100struct netlbl_dommap_def *netlbl_domhsh_getentry_af6(const char *domain,
101 const struct in6_addr *addr);
102#endif /* IPv6 */
103
104int netlbl_domhsh_walk(u32 *skip_bkt,
105 u32 *skip_chain,
106 int (*callback) (struct netlbl_dom_map *entry, void *arg),
107 void *cb_arg);
108
109#endif