tcp: fix retransmissions under buffer shortage

[vpp.git] / src / vnet / util / trajectory.c

diff --git a/src/vnet/util/trajectory.c b/src/vnet/util/trajectory.c
index 24b5125..91812dc 100644 (file)
--- a/src/vnet/util/trajectory.c
+++ b/src/vnet/util/trajectory.c
@@ -64,7 +64,11 @@ vnet_dump_trajectory_trace (vlib_main_t * vm, u32 bi)
 void
 init_trajectory_trace (vlib_buffer_t * b)
 {
-  vec_validate (vnet_buffer2 (b)->trajectory_trace, 7);
+  if (!clib_mem_is_vec (vnet_buffer2 (b)->trajectory_trace))
+    {
+      vnet_buffer2 (b)->trajectory_trace = 0;
+      vec_validate (vnet_buffer2 (b)->trajectory_trace, 7);
+    }
   _vec_len (vnet_buffer2 (b)->trajectory_trace) = 0;
 }