2 * NetLabel Domain Hash Table
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
9 * Author: Paul Moore <paul@paul-moore.com>
14 * (c) Copyright Hewlett-Packard Development Company, L.P., 2006, 2008
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.
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.
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/>.
31 #ifndef _NETLABEL_DOMAINHASH_H
32 #define _NETLABEL_DOMAINHASH_H
34 #include <linux/types.h>
35 #include <linux/rcupdate.h>
36 #include <linux/list.h>
38 #include "netlabel_addrlist.h"
40 /* Domain hash table size */
41 /* XXX - currently this number is an uneducated guess */
42 #define NETLBL_DOMHSH_BITSIZE 7
44 /* Domain mapping definition structures */
45 struct netlbl_domaddr_map {
46 struct list_head list4;
47 struct list_head list6;
49 struct netlbl_dommap_def {
52 struct netlbl_domaddr_map *addrsel;
53 struct cipso_v4_doi *cipso;
54 struct calipso_doi *calipso;
57 #define netlbl_domhsh_addr4_entry(iter) \
58 container_of(iter, struct netlbl_domaddr4_map, list)
59 struct netlbl_domaddr4_map {
60 struct netlbl_dommap_def def;
62 struct netlbl_af4list list;
64 #define netlbl_domhsh_addr6_entry(iter) \
65 container_of(iter, struct netlbl_domaddr6_map, list)
66 struct netlbl_domaddr6_map {
67 struct netlbl_dommap_def def;
69 struct netlbl_af6list list;
72 struct netlbl_dom_map {
75 struct netlbl_dommap_def def;
78 struct list_head list;
83 int netlbl_domhsh_init(u32 size);
85 /* Manipulate the domain hash table */
86 int netlbl_domhsh_add(struct netlbl_dom_map *entry,
87 struct netlbl_audit *audit_info);
88 int netlbl_domhsh_add_default(struct netlbl_dom_map *entry,
89 struct netlbl_audit *audit_info);
90 int netlbl_domhsh_remove_entry(struct netlbl_dom_map *entry,
91 struct netlbl_audit *audit_info);
92 int 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);
96 int 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);
100 int netlbl_domhsh_remove(const char *domain, u16 family,
101 struct netlbl_audit *audit_info);
102 int netlbl_domhsh_remove_default(u16 family, struct netlbl_audit *audit_info);
103 struct netlbl_dom_map *netlbl_domhsh_getentry(const char *domain, u16 family);
104 struct netlbl_dommap_def *netlbl_domhsh_getentry_af4(const char *domain,
106 #if IS_ENABLED(CONFIG_IPV6)
107 struct netlbl_dommap_def *netlbl_domhsh_getentry_af6(const char *domain,
108 const struct in6_addr *addr);
109 int 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);
115 int netlbl_domhsh_walk(u32 *skip_bkt,
117 int (*callback) (struct netlbl_dom_map *entry, void *arg),