linux.git/include/linux/mlx5/driver.h, branch v7.1-rc4

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

2026-04-20T18:20:35+00:00

Pull rdma updates from Jason Gunthorpe:
 "The usual collection of driver changes, more core infrastructure
  updates that typical this cycle:

   - Minor cleanups and kernel-doc fixes in bnxt_re, hns, rdmavt, efa,
     ocrdma, erdma, rtrs, hfi1, ionic, and pvrdma

   - New udata validation framework and driver updates

   - Modernize CQ creation interface in mlx4 and mlx5, manage CQ umem in
     core

   - Promote UMEM to a core component, split out DMA block iterator
     logic

   - Introduce FRMR pools with aging, statistics, pinned handles, and
     netlink control and use it in mlx5

   - Add PCIe TLP emulation support in mlx5

   - Extend umem to work with revocable pinned dmabuf's and use it in
     irdma

   - More net namespace improvements for rxe

   - GEN4 hardware support in irdma

   - First steps to MW and UC support in mana_ib

   - Support for CQ umem and doorbells in bnxt_re

   - Drop opa_vnic driver from hfi1

  Fixes:

   - IB/core zero dmac neighbor resolution race

   - GID table memory free

   - rxe pad/ICRC validation and r_key async errors

   - mlx4 external umem for CQ

   - umem DMA attributes on unmap

   - mana_ib RX steering on RSS QP destroy"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (116 commits)
  RDMA/core: Fix user CQ creation for drivers without create_cq
  RDMA/ionic: bound node_desc sysfs read with %.64s
  IB/core: Fix zero dmac race in neighbor resolution
  RDMA/mana_ib: Support memory windows
  RDMA/rxe: Validate pad and ICRC before payload_size() in rxe_rcv
  RDMA/core: Prefer NLA_NUL_STRING
  RDMA/core: Fix memory free for GID table
  RDMA/hns: Remove the duplicate calls to ib_copy_validate_udata_in()
  RDMA: Remove redundant = {} for udata req structs
  RDMA/irdma: Add missing comp_mask check in alloc_ucontext
  RDMA/hns: Add missing comp_mask check in create_qp
  RDMA/mlx5: Pull comp_mask validation into ib_copy_validate_udata_in_cm()
  RDMA: Use ib_copy_validate_udata_in_cm() for zero comp_mask
  RDMA/hns: Use ib_copy_validate_udata_in()
  RDMA/mlx4: Use ib_copy_validate_udata_in() for QP
  RDMA/mlx4: Use ib_copy_validate_udata_in()
  RDMA/mlx5: Use ib_copy_validate_udata_in() for MW
  RDMA/mlx5: Use ib_copy_validate_udata_in() for SRQ
  RDMA/pvrdma: Use ib_copy_validate_udata_in() for srq
  RDMA: Use ib_copy_validate_udata_in() for implicit full structs
  ...

Merge branch 'mlx5-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux

2026-04-12T21:34:28+00:00

Tariq Toukan says:

====================
mlx5-next updates 2026-04-09

* 'mlx5-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux:
  net/mlx5: Add icm_mng_function_id_mode cap bit
  net/mlx5: Rename MLX5_PF page counter type to MLX5_SELF
  net/mlx5: Add vhca_id_type bit to alias context
  mlx5: Remove redundant iseg base
====================

Link: https://patch.msgid.link/20260409110431.154894-1-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski

net/mlx5: Rename MLX5_PF page counter type to MLX5_SELF

2026-04-09T09:26:39+00:00

The MLX5_PF enum value in mlx5_func_type is used to track firmware
page allocations for the page manager function itself, which is either
the ECPF on SmartNIC systems or the host PF when there is no ECPF.

Rename it to MLX5_SELF to accurately reflect that this counter tracks
pages allocated by the manager for its own use, regardless of whether
it is a PF or ECPF.

Signed-off-by: Moshe Shemesh 
Reviewed-by: Mark Bloch 
Signed-off-by: Tariq Toukan 
Link: https://patch.msgid.link/20260403090028.137783-2-tariqt@nvidia.com
Signed-off-by: Leon Romanovsky

mlx5: Remove redundant iseg base

2026-03-22T18:40:36+00:00

iseg_base and base_addr both point to BAR0, making iseg_base redundant.
Remove iseg_base and rely on base_addr instead, reducing the size of
struct mlx5_core_dev.

Signed-off-by: Parav Pandit 
Reviewed-by: Shay Drori 
Signed-off-by: Tariq Toukan 
Link: https://patch.msgid.link/20260319122211.27384-2-tariqt@nvidia.com
Reviewed-by: Joe Damato 
Signed-off-by: Leon Romanovsky

net/mlx5: Add a shared devlink instance for PFs on same chip

2026-03-14T20:08:51+00:00

Use the previously introduced shared devlink infrastructure to create
a shared devlink instance for mlx5 PFs that reside on the same physical
chip. The shared instance is identified by the chip's serial number
extracted from PCI VPD (V3 keyword, with fallback to serial number
for older devices).

Each PF that probes calls mlx5_shd_init() which extracts the chip serial
number and uses devlink_shd_get() to get or create the shared instance.
When a PF is removed, mlx5_shd_uninit() calls devlink_shd_put()
to release the reference. The shared instance is automatically destroyed
when the last PF is removed.

Make the PF devlink instances nested in this shared devlink instance,
allowing userspace to identify which PFs belong to the same physical
chip.

Example:

pci/0000:08:00.0: index 0
  nested_devlink:
    auxiliary/mlx5_core.eth.0
devlink_index/1: index 1
  nested_devlink:
    pci/0000:08:00.0
    pci/0000:08:00.1
auxiliary/mlx5_core.eth.0: index 2
pci/0000:08:00.1: index 3
  nested_devlink:
    auxiliary/mlx5_core.eth.1
auxiliary/mlx5_core.eth.1: index 4

Signed-off-by: Jiri Pirko 
Link: https://patch.msgid.link/20260312100407.551173-14-jiri@resnulli.us
Signed-off-by: Jakub Kicinski

net/mlx5: Drop MR cache related code

2026-03-02T18:45:30+00:00

Following mlx5_ib move to using FRMR pools, drop all unused code of MR
cache.

Signed-off-by: Michael Guralnik 
Reviewed-by: Yishai Hadas 
Signed-off-by: Edward Srouji 
Link: https://patch.msgid.link/20260226-frmr_pools-v4-7-95360b54f15e@nvidia.com
Signed-off-by: Leon Romanovsky

net/mlx5: Fix multiport device check over light SFs

2026-02-19T17:30:05+00:00

Driver is using num_vhca_ports capability to distinguish between
multiport master device and multiport slave device. num_vhca_ports is a
capability the driver sets according to the MAX num_vhca_ports
capability reported by FW. On the other hand, light SFs doesn't set the
above capbility.

This leads to wrong results whenever light SFs is checking whether he is
a multiport master or slave.

Therefore, use the MAX capability to distinguish between master and
slave devices.

Fixes: e71383fb9cd1 ("net/mlx5: Light probe local SFs")
Signed-off-by: Shay Drory 
Reviewed-by: Moshe Shemesh 
Signed-off-by: Tariq Toukan 
Reviewed-by: Jacob Keller 
Link: https://patch.msgid.link/20260218072904.1764634-2-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski

net/mlx5: Add support for querying bond speed

2026-01-05T07:38:44+00:00

Add mlx5_lag_query_bond_speed() to query the aggregated speed of
lag configurations with a bond device.

Signed-off-by: Or Har-Toov 
Reviewed-by: Mark Bloch 
Signed-off-by: Edward Srouji 
Signed-off-by: Leon Romanovsky

net/mlx5: Handle port and vport speed change events in MPESW

2026-01-05T07:38:25+00:00

Add port change event handling logic for MPESW LAG mode, ensuring
VFs are updated when the speed of LAG physical ports changes.
This triggers a speed update workflow when relevant port state changes
occur, enabling consistent and accurate reporting of VF bandwidth.

Signed-off-by: Or Har-Toov 
Reviewed-by: Maher Sanalla 
Reviewed-by: Mark Bloch 
Signed-off-by: Edward Srouji 
Signed-off-by: Leon Romanovsky

net/mlx5: Move SF dev table notifier registration outside the PF devlink lock

2025-11-20T04:32:28+00:00

This completes the previous patches by moving notifier registration for
SF dev tables outside the devlink locked critical section in
mlx5_init_one() / mlx5_uninit_one() and into the mlx5_mdev_init() /
mlx5_mdev_uninit() functions.

This is only done for non-SFs, since SFs do not have a SF HW table
themselves.

After this patch, notifiers can grab the PF devlink lock (soon to be
necessary) without creating a locking cycle.

Signed-off-by: Cosmin Ratiu 
Reviewed-by: Carolina Jubran 
Signed-off-by: Tariq Toukan 
Link: https://patch.msgid.link/1763325940-1231508-7-git-send-email-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski