Implementation of 4B ASN support for BGP

1 files changed, 17 insertions, 4 deletions

diff --git a/nest/attrs.h b/nest/attrs.h
index abd6b9e..f63f2e4 100644
--- a/nest/attrs.h
+++ b/nest/attrs.h
@@ -14,16 +14,29 @@
 #define AS_PATH_SET		1	/* Types of path segments */
 #define AS_PATH_SEQUENCE	2
 
-struct adata *as_path_prepend(struct linpool *pool, struct adata *olda, int as);
+#define AS_PATH_MAXLEN		10000
+
+#define AS_TRANS		23456
+/* AS_TRANS is used when we need to store 32bit ASN larger than 0xFFFF
+ * to 16bit slot (like in 16bit AS_PATH). See RFC 4893 for details
+ */
+
+struct adata *as_path_prepend(struct linpool *pool, struct adata *olda, u32 as);
+int as_path_convert_to_old(struct adata *path, byte *dst, int *new_used);
+int as_path_convert_to_new(struct adata *path, byte *dst, int req_as);
 void as_path_format(struct adata *path, byte *buf, unsigned int size);
 int as_path_getlen(struct adata *path);
-int as_path_get_first(struct adata *path);
+int as_path_get_first(struct adata *path, u32 *orig_as);
+int as_path_is_member(struct adata *path, u32 as);
+
 
 struct f_path_mask {
   struct f_path_mask *next;
-  int val;
+  u32 val;
+  int any;
 };
-#define PM_ANY -1
+
+// #define PM_ANY -1
 
 int as_path_match(struct adata *path, struct f_path_mask *mask);