From: Willem de Bruijn <willemb@google.com>

Enable safe hardware pacing offload on a first device (idpf), plus support.

- Add ethtool support for admin control over the device feature
- Add device support to the idpf driver

Besides the main feature, also

- Small optimization to FQ offload: avoid unnecessary ktime_.._get().
- Expand so_txtime drv-net test with hw offload testcases.
- Expand pktgen with txtime feature.

Details in the individual patches.

Willem de Bruijn (7):
  net: ethtool: add hardware pacing offload support to rings
  net_sched: sch_fq: clear past skb->tstamp if offloading pacing
  idpf: support pacing offload
  selftests: drv-net: refactor so_txtime errqueue handling
  selftests: drv-net: in so_txtime tell apart sw from hw pacing
  selftests: drv-net: extend so_txtime with hw offload
  net: pktgen: add support for SO_TXTIME

 Documentation/netlink/specs/ethtool.yaml      |   6 +
 .../networking/net_cachelines/net_device.rst  |   3 +-
 .../net/ethernet/intel/idpf/idpf_ethtool.c    |   3 +-
 drivers/net/ethernet/intel/idpf/idpf_lib.c    |   5 +
 drivers/net/ethernet/intel/idpf/idpf_txrx.c   |  63 +++++++-
 drivers/net/ethernet/intel/idpf/idpf_txrx.h   |   2 +
 include/linux/ethtool.h                       |   6 +
 include/linux/netdevice.h                     |   6 +-
 .../uapi/linux/ethtool_netlink_generated.h    |   2 +
 net/core/pktgen.c                             |  85 ++++++++++
 net/core/rtnetlink.c                          |   2 +-
 net/ethtool/common.c                          |   3 +
 net/ethtool/netlink.h                         |   2 +-
 net/ethtool/rings.c                           |  30 +++-
 net/sched/sch_fq.c                            |  21 ++-
 tools/testing/selftests/drivers/net/settings  |   1 +
 .../testing/selftests/drivers/net/so_txtime.c | 147 +++++++++++++-----
 .../selftests/drivers/net/so_txtime.py        |  72 ++++++++-
 18 files changed, 399 insertions(+), 60 deletions(-)
 create mode 100644 tools/testing/selftests/drivers/net/settings

-- 
2.55.0.795.g602f6c329a-goog