1 files changed, 21 insertions, 0 deletions
diff --git a/include/payload.h b/include/payload.h
index fae3c673..eb9ff17d 100644
--- a/include/payload.h
+++ b/include/payload.h
@@ -17,6 +17,27 @@ extern int payload_gen_dependency(struct eval_ctx *ctx, const struct expr *expr,
 extern int exthdr_gen_dependency(struct eval_ctx *ctx, const struct expr *expr,
 				  struct stmt **res);
 
+/**
+ * struct payload_dep_ctx - payload protocol dependency tracking
+ *
+ * @pbase: protocol base of last dependency match
+ * @pdep: last dependency match
+ * @prev: previous statement
+ */
+struct payload_dep_ctx {
+	enum proto_bases	pbase;
+	struct stmt		*pdep;
+	struct stmt		*prev;
+};
+
+extern void payload_dependency_store(struct payload_dep_ctx *ctx,
+				     struct stmt *stmt,
+				     enum proto_bases base);
+extern void __payload_dependency_kill(struct payload_dep_ctx *ctx,
+				      enum proto_bases base);
+extern void payload_dependency_kill(struct payload_dep_ctx *ctx,
+				    struct expr *expr);
+
 extern bool payload_can_merge(const struct expr *e1, const struct expr *e2);
 extern struct expr *payload_expr_join(const struct expr *e1,
 				      const struct expr *e2);