1 files changed, 120 insertions, 0 deletions
diff --git a/include/exthdr.h b/include/exthdr.h
new file mode 100644
index 0000000..084daba
--- /dev/null
+++ b/include/exthdr.h
@@ -0,0 +1,120 @@
+#ifndef NFTABLES_EXTHDR_H
+#define NFTABLES_EXTHDR_H
+
+#include <proto.h>
+#include <tcpopt.h>
+#include <ipopt.h>
+#include <dccpopt.h>
+
+enum exthdr_desc_id {
+	EXTHDR_DESC_UNKNOWN	= 0,
+	EXTHDR_DESC_HBH,
+	EXTHDR_DESC_RT,
+	EXTHDR_DESC_RT0,
+	EXTHDR_DESC_RT2,
+	EXTHDR_DESC_SRH,
+	EXTHDR_DESC_FRAG,
+	EXTHDR_DESC_DST,
+	EXTHDR_DESC_MH,
+	__EXTHDR_DESC_MAX
+};
+#define EXTHDR_DESC_MAX	(__EXTHDR_DESC_MAX - 1)
+
+/**
+ * struct exthdr_desc - extension header description
+ *
+ * @name:	extension header name
+ * @type:	extension header protocol value
+ * @templates:	header field templates
+ */
+struct exthdr_desc {
+	const char			*name;
+	enum exthdr_desc_id		id;
+	uint8_t				type;
+	struct proto_hdr_template	templates[10];
+};
+
+extern struct expr *exthdr_expr_alloc(const struct location *loc,
+				      const struct exthdr_desc *desc,
+				      uint8_t type);
+
+extern const struct exthdr_desc *exthdr_find_proto(uint8_t proto);
+
+extern void exthdr_init_raw(struct expr *expr, uint8_t type,
+			    unsigned int offset, unsigned int len,
+			    enum nft_exthdr_op op, uint32_t flags);
+
+extern bool exthdr_find_template(struct expr *expr, const struct expr *mask,
+				 unsigned int *shift);
+
+enum hbh_hdr_fields {
+	HBHHDR_INVALID,
+	HBHHDR_NEXTHDR,
+	HBHHDR_HDRLENGTH,
+};
+
+enum rt_hdr_fields {
+	RTHDR_INVALID,
+	RTHDR_NEXTHDR,
+	RTHDR_HDRLENGTH,
+	RTHDR_TYPE,
+	RTHDR_SEG_LEFT,
+};
+
+enum rt0_hdr_fields {
+	RT0HDR_INVALID,
+	RT0HDR_RESERVED,
+	RT0HDR_ADDR_1,
+};
+
+enum rt2_hdr_fields {
+	RT2HDR_INVALID,
+	RT2HDR_RESERVED,
+	RT2HDR_ADDR,
+};
+
+enum rt4_hdr_fields {
+	RT4HDR_INVALID,
+	RT4HDR_LASTENT,
+	RT4HDR_FLAGS,
+	RT4HDR_TAG,
+	RT4HDR_SID_1,
+};
+
+enum frag_hdr_fields {
+	FRAGHDR_INVALID,
+	FRAGHDR_NEXTHDR,
+	FRAGHDR_RESERVED,
+	FRAGHDR_FRAG_OFF,
+	FRAGHDR_RESERVED2,
+	FRAGHDR_MFRAGS,
+	FRAGHDR_ID,
+};
+
+enum dst_hdr_fields {
+	DSTHDR_INVALID,
+	DSTHDR_NEXTHDR,
+	DSTHDR_HDRLENGTH,
+};
+
+enum mh_hdr_fields {
+	MHHDR_INVALID,
+	MHHDR_NEXTHDR,
+	MHHDR_HDRLENGTH,
+	MHHDR_TYPE,
+	MHHDR_RESERVED,
+	MHHDR_CHECKSUM,
+};
+
+extern const struct expr_ops exthdr_expr_ops;
+extern const struct exthdr_desc exthdr_hbh;
+extern const struct exthdr_desc exthdr_rt;
+extern const struct exthdr_desc exthdr_rt0;
+extern const struct exthdr_desc exthdr_rt2;
+extern const struct exthdr_desc exthdr_rt4;
+extern const struct exthdr_desc exthdr_frag;
+extern const struct exthdr_desc exthdr_dst;
+extern const struct exthdr_desc exthdr_mh;
+extern const struct datatype mh_type_type;
+
+#endif /* NFTABLES_EXTHDR_H */