am bdbcdf52: Merge "Add support for measuring round-trip latency"

* commit 'bdbcdf52bb5aa9fbd20d2e2d7877eb6549962c89':
  Add support for measuring round-trip latency
tree: 3aad4c1a70ac8c37788956f99de5e0f07d0d423b
  1. doc/
  2. include/
  3. src/
  4. tests/
  5. tools/