[pull-request] mlx5: Move data direct infrastructure to mlx5_core

[Tariq Toukan]

Hi,

The following pull-request contains common mlx5 updates
for your *net-next* tree.
Please pull and let me know of any problem.

Find more details below [1].

Regards,
Tariq

[1]
Data direct support currently lives in mlx5_ib, which owns the data
direct PCI driver, device matching and resource management. To prepare
for data direct support in netdev, move this infrastructure to mlx5_core
and provide a common interface for its consumers.

The series first replaces the direct IB unbind callback with a blocking
notifier chain, allowing multiple consumers to receive unbind events.
It then separates consumer registration from initialization, consolidates
the per-device state and resources, and keeps IB-specific locking and MR
teardown in mlx5_ib.

With these preparations in place, the final patch moves the shared
implementation and PCI driver to mlx5_core. Data direct initialization
and resource creation run during core load, before consumers attach;
cleanup runs during core unload, after consumers detach.

The data direct PCI driver is also explicitly named "mlx5_dd", replacing
the previous "mlx5_ib" name derived from KBUILD_MODNAME.

This series prepares the shared infrastructure for netdev support.
The netdev consumer will follow in a separate series.

----------------------------------------------------------------

The following changes since commit 36b1d3299d0b6aa51485cc9a79b8d94948d5f3d4:

  net/mlx5: Add qp_latency_sensitive_disable cap bit (2026-07-27 02:35:16 -0400)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux.git mlx5-next

for you to fetch changes up to 00290b9ff59ef47b990d26a6b1a8b2ea6dedf5e9:

  mlx5: Move data direct implementation to mlx5_core (2026-10-01 11:40:42 -0400)

----------------------------------------------------------------
Dragos Tatulea (10):
      RDMA/mlx5: Notify data direct users via a notifier chain on unbind
      RDMA/mlx5: Add mlx5_data_direct_supported() helper
      RDMA/mlx5: Make the data direct VUID query self-contained
      RDMA/mlx5: Give the data direct PCI driver a proper name
      RDMA/mlx5: Move and rename data direct resource functions
      RDMA/mlx5: Add new registration stage for data direct users
      RDMA/mlx5: Extract IB specific lock out of data direct
      RDMA/mlx5: Consolidate data direct state into one object
      RDMA/mlx5: Pull data_direct resource creation in init phase
      mlx5: Move data direct implementation to mlx5_core

 drivers/infiniband/hw/mlx5/Makefile                |   1 -
 drivers/infiniband/hw/mlx5/cmd.c                   |  21 --
 drivers/infiniband/hw/mlx5/cmd.h                   |   2 -
 drivers/infiniband/hw/mlx5/data_direct.c           | 227 ------------
 drivers/infiniband/hw/mlx5/data_direct.h           |  23 --
 drivers/infiniband/hw/mlx5/main.c                  | 144 ++------
 drivers/infiniband/hw/mlx5/mlx5_ib.h               |  18 +-
 drivers/infiniband/hw/mlx5/mr.c                    |   7 +-
 drivers/infiniband/hw/mlx5/odp.c                   |   2 +-
 drivers/infiniband/hw/mlx5/std_types.c             |   3 +-
 drivers/infiniband/hw/mlx5/umr.c                   |  11 +-
 drivers/net/ethernet/mellanox/mlx5/core/Makefile   |   2 +-
 .../net/ethernet/mellanox/mlx5/core/data_direct.c  | 400 +++++++++++++++++++++
 drivers/net/ethernet/mellanox/mlx5/core/main.c     |  15 +
 .../net/ethernet/mellanox/mlx5/core/mlx5_core.h    |   5 +
 include/linux/mlx5/data_direct.h                   |  47 +++
 include/linux/mlx5/driver.h                        |   8 +
 17 files changed, 515 insertions(+), 421 deletions(-)
 delete mode 100644 drivers/infiniband/hw/mlx5/data_direct.c
 delete mode 100644 drivers/infiniband/hw/mlx5/data_direct.h
 create mode 100644 drivers/net/ethernet/mellanox/mlx5/core/data_direct.c
 create mode 100644 include/linux/mlx5/data_direct.h