Man pages matching name mlx5dv_ts_to_ns in section 3:

mlx5dv_ts_to_ns.3.en	debian 10 / libibverbs-dev
mlx5dv_ts_to_ns.3.en	debian 11 / libibverbs-dev
mlx5dv_ts_to_ns.3.en	debian 12 / libibverbs-dev