drivers/infiniband/Kconfig

Source file repositories/reference/linux-study-clean/drivers/infiniband/Kconfig

File Facts

System
Linux kernel
Corpus path
drivers/infiniband/Kconfig
Extension
[no extension]
Size
3741 bytes
Lines
119
Domain
Driver Families
Bucket
drivers/infiniband
Inferred role
Driver Families: build/configuration rule
Status
atlas-only

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

# SPDX-License-Identifier: GPL-2.0-only
menuconfig INFINIBAND
	tristate "InfiniBand support"
	depends on HAS_IOMEM && HAS_DMA
	depends on NET
	depends on INET
	depends on !ALPHA
	select DMA_SHARED_BUFFER
	select IRQ_POLL
	select DIMLIB
	help
	  Core support for InfiniBand (IB).  Make sure to also select
	  any protocols you wish to use as well as drivers for your
	  InfiniBand hardware.

if INFINIBAND

config INFINIBAND_USER_MAD
	tristate "InfiniBand userspace MAD support"
	depends on INFINIBAND
	help
	  Userspace InfiniBand Management Datagram (MAD) support.  This
	  is the kernel side of the userspace MAD support, which allows
	  userspace processes to send and receive MADs. You will also
	  need libibumad from rdma-core
	  <https://github.com/linux-rdma/rdma-core>.

config INFINIBAND_USER_ACCESS
	tristate "InfiniBand userspace access (verbs and CM)"
	depends on MMU
	help
	  Userspace InfiniBand access support.  This enables the
	  kernel side of userspace verbs and the userspace
	  communication manager (CM).  This allows userspace processes
	  to set up connections and directly access InfiniBand
	  hardware for fast-path operations.  You will also need
	  libibverbs, libibcm and a hardware driver library from
	  rdma-core <https://github.com/linux-rdma/rdma-core>.

config INFINIBAND_USER_ACCESS_CORE
	bool
	default y if INFINIBAND_USER_ACCESS != n

config INFINIBAND_USER_MEM
	bool
	depends on INFINIBAND_USER_ACCESS != n
	depends on MMU
	select DMA_SHARED_BUFFER
	default y

config INFINIBAND_ON_DEMAND_PAGING
	bool "InfiniBand on-demand paging support"
	depends on INFINIBAND_USER_MEM
	select MMU_NOTIFIER
	select INTERVAL_TREE
	select HMM_MIRROR
	default y
	help
	  On demand paging support for the InfiniBand subsystem.
	  Together with driver support this allows registration of
	  memory regions without pinning their pages, fetching the
	  pages on demand instead.

config INFINIBAND_ADDR_TRANS
	bool "RDMA/CM"
	depends on INFINIBAND
	default y
	help
	  Support for RDMA communication manager (CM).
	  This allows for a generic connection abstraction over RDMA.

Annotation

Implementation Notes