Hi,

Changes from v1:
  - Remove references to the "H" (Set-Gates-And-Hold-MAC) and "R"
    (Set-Gates-And-Release-MAC) commands, as these commands will only
    be used when Frame Preemption support is added (David Ahern);
  - Moved the functions that print and read commands to be closer (David
    Ahern);

Changes from RFC:
  - Removed support for the sched-file parameter, in favor of
    supporting the batch mode feature;

This is the iproute2 side of the taprio v1 series.

Please see the kernel side cover letter for more information about how
to test this.

Cheers,