1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * NetLabel Domain Hash Table
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
10 * Author: Paul Moore <paul@paul-moore.com>
14 * (c) Copyright Hewlett-Packard Development Company, L.P., 2006, 2008
17 #ifndef _NETLABEL_DOMAINHASH_H
18 #define _NETLABEL_DOMAINHASH_H
20 #include <linux/types.h>
21 #include <linux/rcupdate.h>
22 #include <linux/list.h>
24 #include "netlabel_addrlist.h"
26 /* Domain hash table size */
27 /* XXX - currently this number is an uneducated guess */
28 #define NETLBL_DOMHSH_BITSIZE 7
30 /* Domain mapping definition structures */
31 struct netlbl_domaddr_map {
32 struct list_head list4;
33 struct list_head list6;
35 struct netlbl_dommap_def {
38 struct netlbl_domaddr_map *addrsel;
39 struct cipso_v4_doi *cipso;
40 struct calipso_doi *calipso;
43 #define netlbl_domhsh_addr4_entry(iter) \
44 container_of(iter, struct netlbl_domaddr4_map, list)
45 struct netlbl_domaddr4_map {
46 struct netlbl_dommap_def def;
48 struct netlbl_af4list list;
50 #define netlbl_domhsh_addr6_entry(iter) \
51 container_of(iter, struct netlbl_domaddr6_map, list)
52 struct netlbl_domaddr6_map {
53 struct netlbl_dommap_def def;
55 struct netlbl_af6list list;
58 struct netlbl_dom_map {
60 struct netlbl_dommap_def def;
64 struct list_head list;
69 int netlbl_domhsh_init(u32 size);
71 /* Manipulate the domain hash table */
72 int netlbl_domhsh_add(struct netlbl_dom_map *entry,
73 struct netlbl_audit *audit_info);
74 int netlbl_domhsh_add_default(struct netlbl_dom_map *entry,
75 struct netlbl_audit *audit_info);
76 int netlbl_domhsh_remove_entry(struct netlbl_dom_map *entry,
77 struct netlbl_audit *audit_info);
78 int 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);
82 int 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);
86 int netlbl_domhsh_remove(const char *domain, u16 family,
87 struct netlbl_audit *audit_info);
88 int netlbl_domhsh_remove_default(u16 family, struct netlbl_audit *audit_info);
89 struct netlbl_dom_map *netlbl_domhsh_getentry(const char *domain, u16 family);
90 struct netlbl_dommap_def *netlbl_domhsh_getentry_af4(const char *domain,
92 #if IS_ENABLED(CONFIG_IPV6)
93 struct netlbl_dommap_def *netlbl_domhsh_getentry_af6(const char *domain,
94 const struct in6_addr *addr);
95 int 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);
101 int netlbl_domhsh_walk(u32 *skip_bkt,
103 int (*callback) (struct netlbl_dom_map *entry, void *arg),