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-rw-r--r--net/netlabel/netlabel_addrlist.h194
1 files changed, 194 insertions, 0 deletions
diff --git a/net/netlabel/netlabel_addrlist.h b/net/netlabel/netlabel_addrlist.h
new file mode 100644
index 000000000..a01cf4955
--- /dev/null
+++ b/net/netlabel/netlabel_addrlist.h
@@ -0,0 +1,194 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * NetLabel Network Address Lists
+ *
+ * This file contains network address list functions used to manage ordered
+ * lists of network addresses for use by the NetLabel subsystem. 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., 2008
+ */
+
+#ifndef _NETLABEL_ADDRLIST_H
+#define _NETLABEL_ADDRLIST_H
+
+#include <linux/types.h>
+#include <linux/rcupdate.h>
+#include <linux/list.h>
+#include <linux/in6.h>
+#include <linux/audit.h>
+
+/**
+ * struct netlbl_af4list - NetLabel IPv4 address list
+ * @addr: IPv4 address
+ * @mask: IPv4 address mask
+ * @valid: valid flag
+ * @list: list structure, used internally
+ */
+struct netlbl_af4list {
+ __be32 addr;
+ __be32 mask;
+
+ u32 valid;
+ struct list_head list;
+};
+
+/**
+ * struct netlbl_af6list - NetLabel IPv6 address list
+ * @addr: IPv6 address
+ * @mask: IPv6 address mask
+ * @valid: valid flag
+ * @list: list structure, used internally
+ */
+struct netlbl_af6list {
+ struct in6_addr addr;
+ struct in6_addr mask;
+
+ u32 valid;
+ struct list_head list;
+};
+
+#define __af4list_entry(ptr) container_of(ptr, struct netlbl_af4list, list)
+
+static inline struct netlbl_af4list *__af4list_valid(struct list_head *s,
+ struct list_head *h)
+{
+ struct list_head *i = s;
+ struct netlbl_af4list *n = __af4list_entry(s);
+ while (i != h && !n->valid) {
+ i = i->next;
+ n = __af4list_entry(i);
+ }
+ return n;
+}
+
+static inline struct netlbl_af4list *__af4list_valid_rcu(struct list_head *s,
+ struct list_head *h)
+{
+ struct list_head *i = s;
+ struct netlbl_af4list *n = __af4list_entry(s);
+ while (i != h && !n->valid) {
+ i = rcu_dereference(list_next_rcu(i));
+ n = __af4list_entry(i);
+ }
+ return n;
+}
+
+#define netlbl_af4list_foreach(iter, head) \
+ for (iter = __af4list_valid((head)->next, head); \
+ &iter->list != (head); \
+ iter = __af4list_valid(iter->list.next, head))
+
+#define netlbl_af4list_foreach_rcu(iter, head) \
+ for (iter = __af4list_valid_rcu((head)->next, head); \
+ &iter->list != (head); \
+ iter = __af4list_valid_rcu(iter->list.next, head))
+
+#define netlbl_af4list_foreach_safe(iter, tmp, head) \
+ for (iter = __af4list_valid((head)->next, head), \
+ tmp = __af4list_valid(iter->list.next, head); \
+ &iter->list != (head); \
+ iter = tmp, tmp = __af4list_valid(iter->list.next, head))
+
+int netlbl_af4list_add(struct netlbl_af4list *entry,
+ struct list_head *head);
+struct netlbl_af4list *netlbl_af4list_remove(__be32 addr, __be32 mask,
+ struct list_head *head);
+void netlbl_af4list_remove_entry(struct netlbl_af4list *entry);
+struct netlbl_af4list *netlbl_af4list_search(__be32 addr,
+ struct list_head *head);
+struct netlbl_af4list *netlbl_af4list_search_exact(__be32 addr,
+ __be32 mask,
+ struct list_head *head);
+
+#ifdef CONFIG_AUDIT
+void netlbl_af4list_audit_addr(struct audit_buffer *audit_buf,
+ int src, const char *dev,
+ __be32 addr, __be32 mask);
+#else
+static inline void netlbl_af4list_audit_addr(struct audit_buffer *audit_buf,
+ int src, const char *dev,
+ __be32 addr, __be32 mask)
+{
+}
+#endif
+
+#if IS_ENABLED(CONFIG_IPV6)
+
+#define __af6list_entry(ptr) container_of(ptr, struct netlbl_af6list, list)
+
+static inline struct netlbl_af6list *__af6list_valid(struct list_head *s,
+ struct list_head *h)
+{
+ struct list_head *i = s;
+ struct netlbl_af6list *n = __af6list_entry(s);
+ while (i != h && !n->valid) {
+ i = i->next;
+ n = __af6list_entry(i);
+ }
+ return n;
+}
+
+static inline struct netlbl_af6list *__af6list_valid_rcu(struct list_head *s,
+ struct list_head *h)
+{
+ struct list_head *i = s;
+ struct netlbl_af6list *n = __af6list_entry(s);
+ while (i != h && !n->valid) {
+ i = rcu_dereference(list_next_rcu(i));
+ n = __af6list_entry(i);
+ }
+ return n;
+}
+
+#define netlbl_af6list_foreach(iter, head) \
+ for (iter = __af6list_valid((head)->next, head); \
+ &iter->list != (head); \
+ iter = __af6list_valid(iter->list.next, head))
+
+#define netlbl_af6list_foreach_rcu(iter, head) \
+ for (iter = __af6list_valid_rcu((head)->next, head); \
+ &iter->list != (head); \
+ iter = __af6list_valid_rcu(iter->list.next, head))
+
+#define netlbl_af6list_foreach_safe(iter, tmp, head) \
+ for (iter = __af6list_valid((head)->next, head), \
+ tmp = __af6list_valid(iter->list.next, head); \
+ &iter->list != (head); \
+ iter = tmp, tmp = __af6list_valid(iter->list.next, head))
+
+int netlbl_af6list_add(struct netlbl_af6list *entry,
+ struct list_head *head);
+struct netlbl_af6list *netlbl_af6list_remove(const struct in6_addr *addr,
+ const struct in6_addr *mask,
+ struct list_head *head);
+void netlbl_af6list_remove_entry(struct netlbl_af6list *entry);
+struct netlbl_af6list *netlbl_af6list_search(const struct in6_addr *addr,
+ struct list_head *head);
+struct netlbl_af6list *netlbl_af6list_search_exact(const struct in6_addr *addr,
+ const struct in6_addr *mask,
+ struct list_head *head);
+
+#ifdef CONFIG_AUDIT
+void netlbl_af6list_audit_addr(struct audit_buffer *audit_buf,
+ int src,
+ const char *dev,
+ const struct in6_addr *addr,
+ const struct in6_addr *mask);
+#else
+static inline void netlbl_af6list_audit_addr(struct audit_buffer *audit_buf,
+ int src,
+ const char *dev,
+ const struct in6_addr *addr,
+ const struct in6_addr *mask)
+{
+}
+#endif
+#endif /* IPV6 */
+
+#endif