summaryrefslogtreecommitdiffstats
path: root/net/netlabel/netlabel_domainhash.h
diff options
context:
space:
mode:
Diffstat (limited to 'net/netlabel/netlabel_domainhash.h')
-rw-r--r--net/netlabel/netlabel_domainhash.h106
1 files changed, 106 insertions, 0 deletions
diff --git a/net/netlabel/netlabel_domainhash.h b/net/netlabel/netlabel_domainhash.h
new file mode 100644
index 000000000..9f80972ae
--- /dev/null
+++ b/net/netlabel/netlabel_domainhash.h
@@ -0,0 +1,106 @@
+/* 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