linux.git/include/uapi/rdma, branch master

RDMA/mana_ib: UC QP support for UAPI

2026-08-05T14:44:30+00:00

Implement UC QP creation in the RNIC HW for user API. An UC QP is exposed
as three work queues: send, receive, and memory management. The latter is
used for bind and invalidate WQEs to support memory windows.

Signed-off-by: Konstantin Taranov 
Link: https://patch.msgid.link/20260723115955.1859519-3-kotaranov@linux.microsoft.com
Reviewed-by: Long Li 
Signed-off-by: Leon Romanovsky

IB/mad: cleanup all kernel-doc comments

2026-07-30T10:50:32+00:00

Add a leading "struct" keyword to struct descriptions:
Warning: ../include/uapi/rdma/ib_user_mad.h:72 cannot understand function prototype: 'struct ib_user_mad_hdr_old'
Warning: ../include/uapi/rdma/ib_user_mad.h:116 cannot understand function prototype: 'struct ib_user_mad_hdr'
Warning: ../include/uapi/rdma/ib_user_mad.h:143 cannot understand function prototype: 'struct ib_user_mad'
Warning: ../include/uapi/rdma/ib_user_mad.h:184 cannot understand function prototype: 'struct ib_user_mad_reg_req'
Warning: ../include/uapi/rdma/ib_user_mad.h:216 cannot understand function prototype: 'enum'

One enum and #define are moved out of line so that the struct description
and the struct block are not split (separated).

When this is done, more warnings are exposed:
Warning: include/uapi/rdma/ib_user_mad.h:89 struct member 'length' not described in 'ib_user_mad_hdr_old'
Warning: include/uapi/rdma/ib_user_mad.h:135 struct member 'length' not described in 'ib_user_mad_hdr'
Warning: include/uapi/rdma/ib_user_mad.h:135 struct member 'reserved' not described in 'ib_user_mad_hdr'
Warning: include/uapi/rdma/ib_user_mad.h:227 struct member 'id' not described in 'ib_user_mad_reg_req2'
Warning: include/uapi/rdma/ib_user_mad.h:227 struct member 'qpn' not described in 'ib_user_mad_reg_req2'
Warning: include/uapi/rdma/ib_user_mad.h:227 struct member 'mgmt_class' not described in 'ib_user_mad_reg_req2'
Warning: include/uapi/rdma/ib_user_mad.h:227 struct member 'mgmt_class_version' not described in 'ib_user_mad_reg_req2'
Warning: include/uapi/rdma/ib_user_mad.h:227 struct member 'res' not described in 'ib_user_mad_reg_req2'
Warning: include/uapi/rdma/ib_user_mad.h:227 struct member 'flags' not described in 'ib_user_mad_reg_req2'
Warning: include/uapi/rdma/ib_user_mad.h:227 struct member 'method_mask' not described in 'ib_user_mad_reg_req2'
Warning: include/uapi/rdma/ib_user_mad.h:227 struct member 'oui' not described in 'ib_user_mad_reg_req2'
Warning: include/uapi/rdma/ib_user_mad.h:227 struct member 'rmpp_version' not described in 'ib_user_mad_reg_req2'
Warning: include/uapi/rdma/ib_user_mad.h:227 struct member 'reserved' not described in 'ib_user_mad_reg_req2'

These are all repaired by using ':' as the separator between the struct
member @name and its description (instead of '-').

Signed-off-by: Randy Dunlap 
Link: https://patch.msgid.link/20260728183403.1136827-1-rdunlap@infradead.org
Signed-off-by: Leon Romanovsky

RDMA/bnxt_re: Add uverbs object handle path for CQ/SRQ toggle page

2026-07-28T12:03:10+00:00

The current GET_TOGGLE_MEM ioctl requires the caller to supply
a type enum and a raw hardware queue ID (RES_ID). The kernel
looks up the CQ or SRQ by that ID without verifying that the
caller owns the resource.

Add a new, preferred code path that accepts standard uverbs
object handles (BNXT_RE_TOGGLE_MEM_CQ_HANDLE /
BNXT_RE_TOGGLE_MEM_SRQ_HANDLE) instead. The uverbs core validates
that the handle belongs to the calling context as part of resolving
it, so this path no longer needs the driver's own XArray lookup for
ownership checking. As with the legacy path, the toggle_entry's own
mmap-entry refcount (not a CQ/SRQ uobject reference) is what pins
the toggle page for the life of the GET_TOGGLE_MEM handle.

Only newer rdma-core versions support this path, if the
driver reports the supported resp mask
(BNXT_RE_UCNTX_CMASK_TOGGLE_MEM_UOBJ_SUPPORT).
The existing TYPE + RES_ID path is retained for backward
compatibility with older rdma-core.

Suggested-by: Jason Gunthorpe 
Signed-off-by: Selvin Xavier 
Signed-off-by: Leon Romanovsky

RDMA/nldev: Allow setting the device name while changing net namespace

2026-07-26T07:11:00+00:00

Accept RDMA_NLDEV_ATTR_DEV_NAME together with RDMA_NLDEV_NET_NS_FD so a
netlink move can rename the device in the destination namespace. Keep the
name semantics aligned with the existing RDMA rename path.

Signed-off-by: Jiri Pirko 
Link: https://patch.msgid.link/20260716132316.1495242-6-jiri@resnulli.us
Signed-off-by: Leon Romanovsky

RDMA/mlx5: Use UMEM attribute for SRQ doorbell record

2026-07-23T12:33:32+00:00

Add an optional mlx5 driver-namespace UMEM attribute on SRQ create so
userspace can supply the doorbell record umem explicitly, symmetric to
the CQ and QP sides. Resolve it inside mlx5_ib_db_map_user() and use it
as a private DBR page when present; otherwise take the existing UHW
share-or-pin path that preserves per-page DBR sharing across CQ/QP/SRQ
in the same process.

Add mlx5's first UVERBS_OBJECT_SRQ UAPI definition chain to attach the
new attr.

Signed-off-by: Jiri Pirko 
Link: https://patch.msgid.link/20260701124015.64350-4-jiri@resnulli.us
Signed-off-by: Leon Romanovsky

RDMA/uverbs: Add SRQ buffer UMEM attribute

2026-07-23T12:33:32+00:00

Apply the per-attribute UMEM model to the SRQ create method. Add an
optional UMEM attribute that backs the SRQ WQE buffer, so userspace can
supply it as either a VA or a dma-buf through a single descriptor,
consistent with the CQ and QP create methods.

mlx5 is the only driver that pins an SRQ WQE buffer via umem; it maps a
single ucmd->buf_addr region through this attribute. No other driver
implements a user SRQ buffer, so none of them use the attribute.

Signed-off-by: Jiri Pirko 
Link: https://patch.msgid.link/20260701124015.64350-2-jiri@resnulli.us
Signed-off-by: Leon Romanovsky

RDMA/mana_ib: return PD number to the user

2026-07-23T12:21:17+00:00

Implement returning to userspace applications PDNs of created PDs.
The PDN is used by applications that build work requests outside of the
rdma-core code base. The PDN is used to build work requests that require
mentioning the PD. The HW still ensures PD isolation using PDN attached
to MRs and WRs, therefore the PDN mentioned in the work request must match
the PDN of the used work queue. The work requests can fit only 16 bit PDNs.
Allow users to request short PDNs which are 16 bits.

The capability to request short PDN and get PDN is encoded in the response
of alloc user context IOCTL.

Signed-off-by: Konstantin Taranov 
Link: https://patch.msgid.link/20260717200839.495327-1-kotaranov@linux.microsoft.com
Signed-off-by: Leon Romanovsky

RDMA/efa: Expose 64-bit send WR ID support to userspace

2026-07-23T08:01:42+00:00

Currently EFA WRs support 16-bit request ID, this requires EFA to manage
a translation table to translate the IB WR ID from 64-bits to 16-bits
and translating it back on CQ completion.
Expose a new device capability to handle 64-bit request ID for SQ WRs
allowing userspace to directly post the 64-bit ID to the device.

Reviewed-by: Michael Margolin 
Reviewed-by: Tom Sela 
Signed-off-by: Yonatan Nachum 
Link: https://patch.msgid.link/20260722113331.2515247-3-ynachum@amazon.com
Signed-off-by: Leon Romanovsky

RDMA/efa: Add CQ/QP creation with 64-bit SQ req ID support

2026-07-23T08:01:42+00:00

Add the support needed to propagate the user requested flags to config
the CQ/QP to support 64-bit SQ request ID to the device.

Reviewed-by: Michael Margolin 
Reviewed-by: Tom Sela 
Signed-off-by: Yonatan Nachum 
Link: https://patch.msgid.link/20260722113331.2515247-2-ynachum@amazon.com
Signed-off-by: Leon Romanovsky

RDMA/efa: Add Completion Counters support

2026-07-22T09:45:47+00:00

Implement completion counters for the EFA device. Each completion
counter is backed by two EFA event counters, one for success
completions and one for error completions.

The driver creates umem for counters from private descriptor ioctl
attributes using core utility.

Read operations are not implemented as the counter values are accessed
directly from userspace through the mapped memory.

Reviewed-by: Yonatan Nachum 
Signed-off-by: Michael Margolin 
Link: https://patch.msgid.link/20260722083603.30334-7-mrgolin@amazon.com
Signed-off-by: Leon Romanovsky