isisd: Add format func for SID Struct Sub-Sub-TLV

Add a function to return information about an SRv6 SID Structure
Sub-Sub-TLV (RFC 9352 section #9).

Signed-off-by: Carmine Scarpitta <carmine.scarpitta@uniroma2.it>

1 files changed, 34 insertions, 0 deletions

diff --git a/isisd/isis_tlvs.c b/isisd/isis_tlvs.c
index f9ae8e9fd..dc1a469ed 100644
--- a/isisd/isis_tlvs.c
+++ b/isisd/isis_tlvs.c
@@ -1975,6 +1975,40 @@ copy_subsubtlv_srv6_sid_structure(
 	return rv;
 }
 
+static void format_subsubtlv_srv6_sid_structure(
+	struct isis_srv6_sid_structure_subsubtlv *sid_struct, struct sbuf *buf,
+	struct json_object *json, int indent)
+{
+	if (!sid_struct)
+		return;
+
+	if (json) {
+		struct json_object *sid_struct_json;
+		sid_struct_json = json_object_new_object();
+		json_object_object_add(json, "srv6-sid-structure",
+				       sid_struct_json);
+		json_object_int_add(sid_struct_json, "loc-block-len",
+				    sid_struct->loc_block_len);
+		json_object_int_add(sid_struct_json, "loc-node-len",
+				    sid_struct->loc_node_len);
+		json_object_int_add(sid_struct_json, "func-len",
+				    sid_struct->func_len);
+		json_object_int_add(sid_struct_json, "arg-len",
+				    sid_struct->arg_len);
+	} else {
+		sbuf_push(buf, indent, "SRv6 SID Structure ");
+		sbuf_push(buf, 0, "Locator Block length: %hhu, ",
+			  sid_struct->loc_block_len);
+		sbuf_push(buf, 0, "Locator Node length: %hhu, ",
+			  sid_struct->loc_node_len);
+		sbuf_push(buf, 0, "Function length: %hhu, ",
+			  sid_struct->func_len);
+		sbuf_push(buf, 0, "Argument length: %hhu, ",
+			  sid_struct->arg_len);
+		sbuf_push(buf, 0, "\n");
+	}
+}
+
 static struct isis_item *copy_item(enum isis_tlv_context context,
 				   enum isis_tlv_type type,
 				   struct isis_item *item);