kernel/linux.git/include/rdma/rdma_vt.h, branch v7.1

RDMA/rdmavt: Add driver mmap callback

2026-03-11T19:17:28+00:00

Add a reserved range and a driver callback to allow the driver to have custom mmaps. Generated mmap offsets are cookies and are not related to the size of the mmap. Advance the mmap offset by the minimum, PAGE_SIZE, rather than the size of the mmap. Signed-off-by: Dean Luick Signed-off-by: Dennis Dalessandro Link: https://patch.msgid.link/177308909972.1279894.15543003811821875042.stgit@awdrv-04.cornelisnetworks.com Signed-off-by: Leon Romanovsky

RDMA/rdmavt: Add ucontext alloc/dealloc passthrough

2026-03-11T19:17:28+00:00

Add a private data pointer to the ucontext structure and add per-client pass-throughs. Signed-off-by: Dean Luick Signed-off-by: Dennis Dalessandro Link: https://patch.msgid.link/177325008318.52243.7367786996925601681.stgit@awdrv-04.cornelisnetworks.com Signed-off-by: Leon Romanovsky

IB: move from strlcpy with unused retval to strscpy

2022-08-21T11:18:02+00:00

Follow the advice of the below link and prefer 'strscpy' in this subsystem. Conversion is 1:1 because the return value is not used. Generated by a coccinelle script. Link: https://lore.kernel.org/r/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw@mail.gmail.com/ Link: https://lore.kernel.org/r/20220818210018.6841-1-wsa+renesas@sang-engineering.com Signed-off-by: Wolfram Sang Signed-off-by: Leon Romanovsky

RDMA: Fix a typo

2021-03-26T17:07:36+00:00

s/struture/structure/ Link: https://lore.kernel.org/r/20210322064322.3933985-1-unixbhaskar@gmail.com Signed-off-by: Bhaskar Chowdhury Acked-by: Randy Dunlap Signed-off-by: Jason Gunthorpe

RDMA: Support more than 255 rdma ports

2021-03-26T12:31:21+00:00

Current code uses many different types when dealing with a port of a RDMA device: u8, unsigned int and u32. Switch to u32 to clean up the logic. This allows us to make (at least) the core view consistent and use the same type. Unfortunately not all places can be converted. Many uverbs functions expect port to be u8 so keep those places in order not to break UAPIs. HW/Spec defined values must also not be changed. With the switch to u32 we now can support devices with more than 255 ports. U32_MAX is reserved to make control logic a bit easier to deal with. As a device with U32_MAX ports probably isn't going to happen any time soon this seems like a non issue. When a device with more than 255 ports is created uverbs will report the RDMA device as having 255 ports as this is the max currently supported. The verbs interface is not changed yet because the IBTA spec limits the port size in too many places to be u8 and all applications that relies in verbs won't be able to cope with this change. At this stage, we are extending the interfaces that are using vendor channel solely Once the limitation is lifted mlx5 in switchdev mode will be able to have thousands of SFs created by the device. As the only instance of an RDMA device that reports more than 255 ports will be a representor device and it exposes itself as a RAW Ethernet only device CM/MAD/IPoIB and other ULPs aren't effected by this change and their sysfs/interfaces that are exposes to userspace can remain unchanged. While here cleanup some alignment issues and remove unneeded sanity checks (mainly in rdmavt), Link: https://lore.kernel.org/r/20210301070420.439400-1-leon@kernel.org Signed-off-by: Mark Bloch Signed-off-by: Leon Romanovsky Signed-off-by: Jason Gunthorpe

RDMA/include: Mundane typo fixes throughout the file

2021-03-23T00:46:36+00:00

s/proviee/provide/ s/undelying/underlying/ s/quesiton/question/ s/drivr/driver/ Link: https://lore.kernel.org/r/20210318100453.9759-1-unixbhaskar@gmail.com Signed-off-by: Bhaskar Chowdhury Acked-by: Randy Dunlap Signed-off-by: Jason Gunthorpe

RDMA/include: Replace license text with SPDX tags

2020-07-29T17:48:36+00:00

The header files in RDMA subsystem are dual licensed and can be described by simple SPDX tag, so replace all of them at once together with making them use the same coding style for header guard defines. Link: https://lore.kernel.org/r/20200719072521.135260-1-leon@kernel.org Signed-off-by: Leon Romanovsky Signed-off-by: Jason Gunthorpe

IB/{rdmavt, hfi1, qib}: Add a counter for credit waits

2019-09-13T19:59:55+00:00

This patch adds a counter for credit waits to assist field debugging. Link: https://lore.kernel.org/r/20190911113047.126040.10857.stgit@awfm-01.aw.intel.com Reviewed-by: Mike Marciniszyn Signed-off-by: Kaike Wan Signed-off-by: Mike Marciniszyn Signed-off-by: Dennis Dalessandro Signed-off-by: Jason Gunthorpe

IB/{rdmavt, hfi1, qib}: Remove AH refcount for UD QPs

2019-06-29T01:34:26+00:00

Historically rdmavt destroy_ah() has returned an -EBUSY when the AH has a non-zero reference count. IBTA 11.2.2 notes no such return value or error case: Output Modifiers: - Verb results: - Operation completed successfully. - Invalid HCA handle. - Invalid address handle. ULPs never test for this error and this will leak memory. The reference count exists to allow for driver independent progress mechanisms to process UD SWQEs in parallel with post sends. The SWQE will hold a reference count until the UD SWQE completes and then drops the reference. Fix by removing need to reference count the AH. Add a UD specific allocation to each SWQE entry to cache the necessary information for independent progress. Copy the information during the post send processing. Reviewed-by: Mike Marciniszyn Signed-off-by: Mike Marciniszyn Signed-off-by: Michael J. Ruhl Signed-off-by: Dennis Dalessandro Signed-off-by: Jason Gunthorpe

RDMA: Move driver_id into struct ib_device_ops

2019-06-10T19:56:02+00:00

No reason for every driver to emit code to set this, just make it part of the driver's existing static const ops structure. Signed-off-by: Jason Gunthorpe Reviewed-by: Leon Romanovsky Signed-off-by: Jason Gunthorpe