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-rw-r--r--src/vnet/unix/gdb_funcs.c41
1 files changed, 41 insertions, 0 deletions
diff --git a/src/vnet/unix/gdb_funcs.c b/src/vnet/unix/gdb_funcs.c
index 797cb0eb7d1..886d849c173 100644
--- a/src/vnet/unix/gdb_funcs.c
+++ b/src/vnet/unix/gdb_funcs.c
@@ -380,6 +380,47 @@ gdb_validate_buffer (vlib_buffer_t * b)
return 0;
}
+/**
+ * Dump a trajectory trace, reasonably easy to call from gdb
+ */
+void
+gdb_dump_trajectory_trace (u32 bi)
+{
+#if VLIB_BUFFER_TRACE_TRAJECTORY > 0
+ vlib_main_t *vm = vlib_get_main ();
+ vlib_node_main_t *vnm = &vm->node_main;
+ vlib_buffer_t *b;
+ u16 *trace;
+ u8 i;
+
+ b = vlib_get_buffer (vm, bi);
+
+ trace = b->trajectory_trace;
+
+ fformat (stderr, "Context trace for bi %d b 0x%llx, visited %d\n", bi, b,
+ b->trajectory_nb);
+
+ for (i = 0; i < b->trajectory_nb; i++)
+ {
+ u32 node_index;
+
+ node_index = trace[i];
+
+ if (node_index >= vec_len (vnm->nodes))
+ {
+ fformat (stderr, "Skip bogus node index %d\n", node_index);
+ continue;
+ }
+
+ fformat (stderr, "%v (%d)\n", vnm->nodes[node_index]->name, node_index);
+ }
+#else
+ fformat (stderr, "in vlib/buffers.h, "
+ "#define VLIB_BUFFER_TRACE_TRAJECTORY 1\n");
+
+#endif
+}
+
/* Cafeteria plan, maybe you don't want these functions */
clib_error_t *
gdb_func_init (vlib_main_t * vm)