Book a Demo!
CoCalc Logo Icon
StoreFeaturesDocsShareSupportNewsAboutPoliciesSign UpSign In
torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/net/netlabel/netlabel_domainhash.h
26278 views
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 <[email protected]>

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 */

31
struct netlbl_domaddr_map {

32
	struct list_head list4;

33
	struct list_head list6;

34
};

35
struct 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)

45
struct 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)

52
struct netlbl_domaddr6_map {

53
	struct netlbl_dommap_def def;

54


55
	struct netlbl_af6list list;

56
};

57


58
struct 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 */

69
int netlbl_domhsh_init(u32 size);

70


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,

91
						     __be32 addr);

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);

99
#endif /* IPv6 */

100


101
int 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

107


108