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-rw-r--r--include/expr_ops.h34
1 files changed, 34 insertions, 0 deletions
diff --git a/include/expr_ops.h b/include/expr_ops.h
new file mode 100644
index 0000000..ea5defd
--- /dev/null
+++ b/include/expr_ops.h
@@ -0,0 +1,34 @@
+#ifndef _EXPR_OPS_H_
+#define _EXPR_OPS_H_
+
+#include <stdint.h>
+#include "internal.h"
+
+struct nlattr;
+struct nlmsghdr;
+struct nft_rule_expr;
+
+struct expr_ops {
+ struct list_head head;
+
+ const char *name;
+ uint32_t alloc_len;
+ int max_attr;
+ void (*free)(struct nft_rule_expr *e);
+ int (*set)(struct nft_rule_expr *e, uint16_t type, const void *data, uint32_t data_len);
+ const void *(*get)(const struct nft_rule_expr *e, uint16_t type, uint32_t *data_len);
+ int (*parse)(struct nft_rule_expr *e, struct nlattr *attr);
+ void (*build)(struct nlmsghdr *nlh, struct nft_rule_expr *e);
+ int (*snprintf)(char *buf, size_t len, uint32_t type, uint32_t flags, struct nft_rule_expr *e);
+ int (*xml_parse)(struct nft_rule_expr *e, mxml_node_t *tree,
+ struct nft_parse_err *err);
+ int (*json_parse)(struct nft_rule_expr *e, json_t *data,
+ struct nft_parse_err *err);
+};
+
+void nft_expr_ops_register(struct expr_ops *ops);
+struct expr_ops *nft_expr_ops_lookup(const char *name);
+
+#define nft_expr_data(ops) (void *)ops->data
+
+#endif