TunnelEncaps: Initial commit

1 files changed, 67 insertions, 0 deletions

diff --git a/nest/attrs.h b/nest/attrs.h
index fcd5ac16..a874ffe1 100644
--- a/nest/attrs.h
+++ b/nest/attrs.h
@@ -30,6 +30,12 @@
 
 struct f_val;
 struct f_tree;
+struct te_subtlv;
+struct te_tlv;
+struct te_tlvlist;
+struct te_encap;
+struct te_endpoint;
+struct te_visitor;
 
 int as_path_valid(byte *data, uint len, int bs, int sets, int confed, char *err, uint elen);
 int as_path_16to32(byte *dst, const byte *src, uint len);
@@ -241,4 +247,65 @@ int lc_set_walk(const struct adata *list, uint *pos, lcomm *val);
 
 void ec_set_sort_x(struct adata *set); /* Sort in place */
 
+
+/* a-tlv.c */
+
+
+/* Tunnel Encapsulation TLV types */
+#define TLV_TUNNEL_TYPE 0x00	/* Reserved. Used internally only. */
+#define TLV_ENCAPSULATION 0x01
+#define TLV_COLOR 0x04
+#define TLV_TUNNEL_ENDPOINT 0x06
+#define TLV_UDP_DEST_PORT 0x08
+
+struct te_encap {
+  int type;
+  uint length;
+  const void *data;
+};
+
+struct te_unknown {
+  uint length;
+  const void *data;
+};
+
+struct te_endpoint {
+  u32 reserved;
+  u16 af;
+  ip_addr ip;
+};
+
+/* Tunnel Encapsulation TLV */
+struct te_subtlv {
+  int type;
+  union {
+    struct te_encap tunnel_encap;
+    struct te_endpoint tunnel_endpoint;
+    u32 color;
+    u16 udp_dest_port;
+    struct te_unknown unknown;
+  } u;
+};
+
+struct te_tlv {
+  node n;
+  uint len;
+  int type;
+  struct te_subtlv st[0];
+};
+
+struct te_tlvlist {
+  list tlv;
+};
+
+const struct te_tlv *tlv_alloc(struct linpool *pool, const struct f_tree *set);
+int tlv_set_format(const struct te_tlvlist *set, int from, byte *buf, uint size);
+int tlv_set_contains(const struct te_tlvlist *list, const struct te_tlv *val);
+const struct te_tlvlist *tlv_set_add(struct linpool *pool, const struct te_tlvlist *list, const struct te_tlv *val);
+const struct te_tlvlist *tlv_set_union(struct linpool *pool, const struct te_tlvlist *l1, const struct te_tlvlist *l2);
+int tlvlist_same(const struct te_tlvlist *tl1, const struct te_tlvlist *tl2);
+
+struct adata *tlvlist_encode_tunnel_encap(struct linpool *pool, const struct te_tlvlist *tl);
+struct te_tlvlist *tlvlist_decode_tunnel_encap(struct linpool *pool, const struct adata *ad);
+
 #endif