Re: [Intel-wired-lan] [PATCH net-next v4 0/6] hardware pacing offload

[Willem de Bruijn <willemdebruijn.kernel@gmail.com>]

Willem de Bruijn wrote:
> From: Willem de Bruijn <willemb@google.com>
> 
> Enable safe hardware pacing offload on a first device (idpf), plus support.
> 
> - Add rtnetlink 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 and detailed changelog in the individual patches.
> 
> High level changes:
>   v3 -> v4
>     - Replace ethtool API with rtnetlink
>     - Drop/defer pktgen patch: not essential
> 
> NOTE: the idpf patch will have a minor merge conflict with commit
> "idpf: add missing cpu_to_le32 in idpf_tx_splitq_build_flow_desc"
> (https://lore.kernel.org/netdev/20260803210707.1912217-1-willemdebruijn.kernel@gmail.com/).
> I expect that this series will need another revision, at which point
> that fix will have made its way to net-next. There is also a fix to
> so_txtime.py outstanding, but that is structured so that these do not
> conflict.
> 
> v3: https://lore.kernel.org/netdev/20260726202902.760552-1-willemdebruijn.kernel@gmail.com/
> v2: https://lore.kernel.org/netdev/20260722204454.3234605-1-willemdebruijn.kernel@gmail.com/
> v1: https://lore.kernel.org/netdev/20260706133433.3142805-1-willemdebruijn.kernel@gmail.com/
> 
> Willem de Bruijn (6):
>   net: rtnetlink: add pacing_offload_horizon attribute to net_device
>   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
> 
>  Documentation/netlink/specs/rt-link.yaml      |   6 +
>  .../networking/net_cachelines/net_device.rst  |   3 +-
>  drivers/net/ethernet/intel/idpf/idpf.h        |   1 +
>  drivers/net/ethernet/intel/idpf/idpf_lib.c    |   3 +
>  drivers/net/ethernet/intel/idpf/idpf_txrx.c   |  70 +++++++-
>  drivers/net/ethernet/intel/idpf/idpf_txrx.h   |   2 +
>  .../net/ethernet/intel/idpf/idpf_virtchnl.c   |  56 ++++++-
>  drivers/net/ethernet/intel/idpf/virtchnl2.h   |  10 ++
>  include/linux/netdevice.h                     |   4 +-
>  include/linux/skbuff.h                        |  17 +-
>  include/uapi/linux/if_link.h                  |   1 +
>  net/core/rtnetlink.c                          |  21 +++
>  net/sched/sch_fq.c                            |  19 ++-
>  .../testing/selftests/drivers/net/so_txtime.c | 157 +++++++++++++-----
>  .../selftests/drivers/net/so_txtime.py        |  75 ++++++++-
>  15 files changed, 385 insertions(+), 60 deletions(-)

This was intended to have a wider audience list. Will address in v5.