[for-next v2 0/4] ionic: RDMA completion timestamping support

[Abhijit Gangurde]

Hi,

This series adds RDMA completion timestamp support for ionic.

It enables PHC registration for RDMA timestamp capability, exposes a PHC
state page for safe user-space reads, maps that PHC state through RDMA
ucontext mmap, and extends the RDMA CQE format to carry completion
timestamps.

With this, user space can read completion timestamps and convert them to
wall time with low overhead.

Patches:
    net: ionic: register PHC for rdma timestamping
    net: ionic: Add PHC state page for user space access
    RDMA/ionic: map PHC state into user space
    RDMA/ionic: add completion timestamp to CQE format

Provider's PR: https://github.com/linux-rdma/rdma-core/pull/1724

v2:
  - changed ionic_phc_state to ib_uverbs_phc_state and moved it under
    ib_user_verbs.h
v1: https://lore.kernel.org/all/20260401102501.3395305-1-abhijit.gangurde@xxxxxxx/

Abhijit Gangurde (4):
  net: ionic: register PHC for rdma timestamping
  net: ionic: Add PHC state page for user space access
  RDMA/ionic: map PHC state into user space
  RDMA/ionic: add completion timestamp to CQE format

 .../infiniband/hw/ionic/ionic_controlpath.c   | 36 ++++++++++-
 drivers/infiniband/hw/ionic/ionic_datapath.c  | 43 ++++++-------
 drivers/infiniband/hw/ionic/ionic_fw.h        | 12 +++-
 drivers/infiniband/hw/ionic/ionic_ibdev.h     |  2 +
 drivers/infiniband/hw/ionic/ionic_lif_cfg.c   |  2 +
 drivers/infiniband/hw/ionic/ionic_lif_cfg.h   |  1 +
 .../net/ethernet/pensando/ionic/ionic_if.h    |  1 +
 .../net/ethernet/pensando/ionic/ionic_lif.c   |  5 +-
 .../net/ethernet/pensando/ionic/ionic_lif.h   |  3 +-
 .../net/ethernet/pensando/ionic/ionic_phc.c   | 62 ++++++++++++++++---
 include/uapi/rdma/ib_user_verbs.h             | 33 ++++++++++
 include/uapi/rdma/ionic-abi.h                 |  1 +
 12 files changed, 167 insertions(+), 34 deletions(-)

-- 
2.43.0