[PATCH v4 net-next 0/3] Implement PTP support in netdevsim

[Maciek Machnikowski <maciek@machnikowski.net>]

This patchset adds support to the PTP HW timestamping emulation in the
netdevsim. It uses existing binding between netdevsim and ptp_mock
driver to generate transmit and receive timestamps.

It also adds the selftest to verify the hw timestamping functionality
running over netdevsim.

v2:
- Added selftest/net/ptp.sh
- Modified ptp_mock to use spin_lock_bh
- Populate ethtool defaults using ethtool_op_get_ts_info

v3:
- Fixed shellcheck issues in the selftest/net/ptp.sh
- Added selftest/net/ptp.sh to the selftest/net/Makefile
- Modified ptp_mock to use spin_lock_irqsave

v4:
- Check if Rx timestamps are enabled before generating a timestamp
- Replace bash selftest script with a python one
- Optimized Tx timestamp generation

Maciek Machnikowski (3):
  ptp_mock: Expose ptp_clock_info to external drivers
  netdevsim: Implement basic ptp support
  selftests:net: Implement ptp4l sync test using netdevsim

 drivers/net/netdevsim/ethtool.c      |  11 ++
 drivers/net/netdevsim/netdev.c       |  91 ++++++++++++
 drivers/net/netdevsim/netdevsim.h    |   1 +
 drivers/ptp/ptp_mock.c               |  26 ++--
 include/linux/ptp_mock.h             |   5 +
 tools/testing/selftests/net/Makefile |   1 +
 tools/testing/selftests/net/ptp.py   | 184 +++++++++++++++++++++++++++
 7 files changed, 311 insertions(+), 8 deletions(-)
 create mode 100755 tools/testing/selftests/net/ptp.py

-- 
2.53.0