path: root/src/expr_ops.h
diff options
authorPablo Neira Ayuso <>2012-08-03 17:31:48 +0200
committerPablo Neira Ayuso <>2012-10-11 15:15:02 +0200
commit00c179b4c9f9f9394cc6f79e5f2a68410631fd72 (patch)
tree00057636d125f3c89e2b9485c67c4283a98d91b2 /src/expr_ops.h
initial version of libnftables
It adds support for table, chain and rule handling. This also includes expression handling for each rule. Signed-off-by: Pablo Neira Ayuso <>
Diffstat (limited to 'src/expr_ops.h')
1 files changed, 24 insertions, 0 deletions
diff --git a/src/expr_ops.h b/src/expr_ops.h
new file mode 100644
index 0000000..2322958
--- /dev/null
+++ b/src/expr_ops.h
@@ -0,0 +1,24 @@
+#ifndef _EXPR_OPS_H_
+#define _EXPR_OPS_H_
+#include <stdlib.h>
+#include <stdint.h>
+struct nlattr;
+struct nlmsghdr;
+struct nft_rule_expr;
+struct expr_ops {
+ char *name;
+ size_t alloc_len;
+ int max_attr;
+ int (*set)(struct nft_rule_expr *e, uint16_t type, const void *data, size_t data_len);
+ const void *(*get)(struct nft_rule_expr *e, uint16_t type, size_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, struct nft_rule_expr *e);
+struct expr_ops *nft_expr_ops_lookup(const char *name);