From fac10ea799fe9b6158d74f66d6ad46536d38a545 Mon Sep 17 00:00:00 2001
From: Patrick McHardy <kaber@trash.net>
Date: Wed, 18 Mar 2009 04:55:00 +0100
Subject: Initial commit

---
 include/statement.h | 140 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 140 insertions(+)
 create mode 100644 include/statement.h

(limited to 'include/statement.h')

diff --git a/include/statement.h b/include/statement.h
new file mode 100644
index 00000000..6e5cfbdb
--- /dev/null
+++ b/include/statement.h
@@ -0,0 +1,140 @@
+#ifndef _STATEMENT_H
+#define _STATEMENT_H
+
+#include <list.h>
+#include <expression.h>
+
+extern struct stmt *expr_stmt_alloc(const struct location *loc,
+				    struct expr *expr);
+
+extern struct stmt *verdict_stmt_alloc(const struct location *loc,
+				       struct expr *expr);
+
+struct counter_stmt {
+	uint64_t		packets;
+	uint64_t		bytes;
+};
+
+extern struct stmt *counter_stmt_alloc(const struct location *loc);
+
+#include <meta.h>
+struct meta_stmt {
+	enum nft_meta_keys		key;
+	const struct meta_template	*tmpl;
+	struct expr			*expr;
+};
+
+extern struct stmt *meta_stmt_alloc(const struct location *loc,
+				    enum nft_meta_keys key,
+				    struct expr *expr);
+
+struct log_stmt {
+	const char		*prefix;
+	unsigned int		group;
+	unsigned int		snaplen;
+	unsigned int		qthreshold;
+};
+
+extern struct stmt *log_stmt_alloc(const struct location *loc);
+
+
+struct limit_stmt {
+	uint64_t		rate;
+	uint64_t		unit;
+	uint64_t		depth;
+};
+
+extern struct stmt *limit_stmt_alloc(const struct location *loc);
+
+struct reject_stmt {
+	enum nft_reject_types	type;
+};
+
+extern struct stmt *reject_stmt_alloc(const struct location *loc);
+
+struct nat_stmt {
+	enum nft_nat_types	type;
+	struct expr		*addr;
+	struct expr		*proto;
+};
+
+extern struct stmt *nat_stmt_alloc(const struct location *loc);
+
+/**
+ * enum stmt_types - statement types
+ *
+ * @STMT_INVALID:	uninitialised
+ * @STMT_EXPRESSION:	expression statement (relational)
+ * @STMT_VERDICT:	verdict statement
+ * @STMT_COUNTER:	counters
+ * @STMT_META:		meta statement
+ * @STMT_LIMIT:		limit statement
+ * @STMT_LOG:		log statement
+ * @STMT_REJECT:	REJECT statement
+ * @STMT_NAT:		NAT statement
+ */
+enum stmt_types {
+	STMT_INVALID,
+	STMT_EXPRESSION,
+	STMT_VERDICT,
+	STMT_COUNTER,
+	STMT_META,
+	STMT_LIMIT,
+	STMT_LOG,
+	STMT_REJECT,
+	STMT_NAT,
+};
+
+/**
+ * struct stmt_ops
+ *
+ * @type:	statement type
+ * @name:	name
+ * @destroy:	destructor
+ * @print:	function to print statement
+ */
+struct stmt;
+struct stmt_ops {
+	enum stmt_types		type;
+	const char		*name;
+	void			(*destroy)(struct stmt *stmt);
+	void			(*print)(const struct stmt *stmt);
+};
+
+enum stmt_flags {
+	STMT_F_TERMINAL		= 0x1,
+};
+
+/**
+ * struct stmt
+ *
+ * @list:	rule list node
+ * @ops:	statement ops
+ * @location:	location where the statement was defined
+ * @flags:	statement flags
+ * @union:	type specific data
+ */
+struct stmt {
+	struct list_head		list;
+	const struct stmt_ops		*ops;
+	struct location			location;
+	enum stmt_flags			flags;
+
+	union {
+		struct expr		*expr;
+		struct counter_stmt	counter;
+		struct meta_stmt	meta;
+		struct log_stmt		log;
+		struct limit_stmt	limit;
+		struct reject_stmt	reject;
+		struct nat_stmt		nat;
+	};
+};
+
+extern struct stmt *stmt_alloc(const struct location *loc,
+			       const struct stmt_ops *ops);
+extern void stmt_free(struct stmt *stmt);
+extern void stmt_list_free(struct list_head *list);
+extern void stmt_print(const struct stmt *stmt);
+
+#endif /* _STATEMENT_H */
-- 
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