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1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * NetLabel Domain Hash Table
4 *
5 * This file manages the domain hash table that NetLabel uses to determine
6 * which network labeling protocol to use for a given domain. The NetLabel
7 * system manages static and dynamic label mappings for network protocols such
8 * as CIPSO and RIPSO.
9 *
10 * Author: Paul Moore <paul@paul-moore.com>
11 */
12
13/*
14 * (c) Copyright Hewlett-Packard Development Company, L.P., 2006, 2008
15 */
16
17#ifndef _NETLABEL_DOMAINHASH_H
18#define _NETLABEL_DOMAINHASH_H
19
20#include <linux/types.h>
21#include <linux/rcupdate.h>
22#include <linux/list.h>
23
24#include "netlabel_addrlist.h"
25
26/* Domain hash table size */
27/* XXX - currently this number is an uneducated guess */
28#define NETLBL_DOMHSH_BITSIZE 7
29
30/* Domain mapping definition structures */
31struct netlbl_domaddr_map {
32 struct list_head list4;
33 struct list_head list6;
34};
35struct netlbl_dommap_def {
36 u32 type;
37 union {
38 struct netlbl_domaddr_map *addrsel;
39 struct cipso_v4_doi *cipso;
40 struct calipso_doi *calipso;
41 };
42};
43#define netlbl_domhsh_addr4_entry(iter) \
44 container_of(iter, struct netlbl_domaddr4_map, list)
45struct netlbl_domaddr4_map {
46 struct netlbl_dommap_def def;
47
48 struct netlbl_af4list list;
49};
50#define netlbl_domhsh_addr6_entry(iter) \
51 container_of(iter, struct netlbl_domaddr6_map, list)
52struct netlbl_domaddr6_map {
53 struct netlbl_dommap_def def;
54
55 struct netlbl_af6list list;
56};
57
58struct netlbl_dom_map {
59 char *domain;
60 struct netlbl_dommap_def def;
61 u16 family;
62
63 u32 valid;
64 struct list_head list;
65 struct rcu_head rcu;
66};
67
68/* init function */
69int netlbl_domhsh_init(u32 size);
70
71/* Manipulate the domain hash table */
72int netlbl_domhsh_add(struct netlbl_dom_map *entry,
73 struct netlbl_audit *audit_info);
74int netlbl_domhsh_add_default(struct netlbl_dom_map *entry,
75 struct netlbl_audit *audit_info);
76int netlbl_domhsh_remove_entry(struct netlbl_dom_map *entry,
77 struct netlbl_audit *audit_info);
78int netlbl_domhsh_remove_af4(const char *domain,
79 const struct in_addr *addr,
80 const struct in_addr *mask,
81 struct netlbl_audit *audit_info);
82int netlbl_domhsh_remove_af6(const char *domain,
83 const struct in6_addr *addr,
84 const struct in6_addr *mask,
85 struct netlbl_audit *audit_info);
86int netlbl_domhsh_remove(const char *domain, u16 family,
87 struct netlbl_audit *audit_info);
88int netlbl_domhsh_remove_default(u16 family, struct netlbl_audit *audit_info);
89struct netlbl_dom_map *netlbl_domhsh_getentry(const char *domain, u16 family);
90struct netlbl_dommap_def *netlbl_domhsh_getentry_af4(const char *domain,
91 __be32 addr);
92#if IS_ENABLED(CONFIG_IPV6)
93struct netlbl_dommap_def *netlbl_domhsh_getentry_af6(const char *domain,
94 const struct in6_addr *addr);
95int netlbl_domhsh_remove_af6(const char *domain,
96 const struct in6_addr *addr,
97 const struct in6_addr *mask,
98 struct netlbl_audit *audit_info);
99#endif /* IPv6 */
100
101int netlbl_domhsh_walk(u32 *skip_bkt,
102 u32 *skip_chain,
103 int (*callback) (struct netlbl_dom_map *entry, void *arg),
104 void *cb_arg);
105
106#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 struct calipso_doi *calipso;
55 };
56};
57#define netlbl_domhsh_addr4_entry(iter) \
58 container_of(iter, struct netlbl_domaddr4_map, list)
59struct netlbl_domaddr4_map {
60 struct netlbl_dommap_def def;
61
62 struct netlbl_af4list list;
63};
64#define netlbl_domhsh_addr6_entry(iter) \
65 container_of(iter, struct netlbl_domaddr6_map, list)
66struct netlbl_domaddr6_map {
67 struct netlbl_dommap_def def;
68
69 struct netlbl_af6list list;
70};
71
72struct netlbl_dom_map {
73 char *domain;
74 u16 family;
75 struct netlbl_dommap_def def;
76
77 u32 valid;
78 struct list_head list;
79 struct rcu_head rcu;
80};
81
82/* init function */
83int netlbl_domhsh_init(u32 size);
84
85/* Manipulate the domain hash table */
86int netlbl_domhsh_add(struct netlbl_dom_map *entry,
87 struct netlbl_audit *audit_info);
88int netlbl_domhsh_add_default(struct netlbl_dom_map *entry,
89 struct netlbl_audit *audit_info);
90int netlbl_domhsh_remove_entry(struct netlbl_dom_map *entry,
91 struct netlbl_audit *audit_info);
92int netlbl_domhsh_remove_af4(const char *domain,
93 const struct in_addr *addr,
94 const struct in_addr *mask,
95 struct netlbl_audit *audit_info);
96int netlbl_domhsh_remove_af6(const char *domain,
97 const struct in6_addr *addr,
98 const struct in6_addr *mask,
99 struct netlbl_audit *audit_info);
100int netlbl_domhsh_remove(const char *domain, u16 family,
101 struct netlbl_audit *audit_info);
102int netlbl_domhsh_remove_default(u16 family, struct netlbl_audit *audit_info);
103struct netlbl_dom_map *netlbl_domhsh_getentry(const char *domain, u16 family);
104struct netlbl_dommap_def *netlbl_domhsh_getentry_af4(const char *domain,
105 __be32 addr);
106#if IS_ENABLED(CONFIG_IPV6)
107struct netlbl_dommap_def *netlbl_domhsh_getentry_af6(const char *domain,
108 const struct in6_addr *addr);
109int netlbl_domhsh_remove_af6(const char *domain,
110 const struct in6_addr *addr,
111 const struct in6_addr *mask,
112 struct netlbl_audit *audit_info);
113#endif /* IPv6 */
114
115int netlbl_domhsh_walk(u32 *skip_bkt,
116 u32 *skip_chain,
117 int (*callback) (struct netlbl_dom_map *entry, void *arg),
118 void *cb_arg);
119
120#endif