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