mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-15 00:04:15 +08:00
368c0159d4
Dma-buf is a standard cross-driver buffer sharing mechanism that can be used to support peer-to-peer access from RDMA devices. Device memory exported via dma-buf is associated with a file descriptor. This is passed to the user space as a property associated with the buffer allocation. When the buffer is registered as a memory region, the file descriptor is passed to the RDMA driver along with other parameters. Implement the common code for importing dma-buf object and mapping dma-buf pages. Link: https://lore.kernel.org/r/1608067636-98073-2-git-send-email-jianxin.xiong@intel.com Signed-off-by: Jianxin Xiong <jianxin.xiong@intel.com> Reviewed-by: Sean Hefty <sean.hefty@intel.com> Acked-by: Michael J. Ruhl <michael.j.ruhl@intel.com> Acked-by: Christian Koenig <christian.koenig@amd.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
112 lines
3.5 KiB
Plaintext
112 lines
3.5 KiB
Plaintext
# 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 m || IPV6 != m
|
|
depends on !ALPHA
|
|
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_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.
|
|
|
|
config INFINIBAND_ADDR_TRANS_CONFIGFS
|
|
bool
|
|
depends on INFINIBAND_ADDR_TRANS && CONFIGFS_FS && !(INFINIBAND=y && CONFIGFS_FS=m)
|
|
default y
|
|
help
|
|
ConfigFS support for RDMA communication manager (CM).
|
|
This allows the user to config the default GID type that the CM
|
|
uses for each device, when initiaing new connections.
|
|
|
|
config INFINIBAND_VIRT_DMA
|
|
def_bool !HIGHMEM
|
|
|
|
if INFINIBAND_USER_ACCESS || !INFINIBAND_USER_ACCESS
|
|
source "drivers/infiniband/hw/mthca/Kconfig"
|
|
source "drivers/infiniband/hw/qib/Kconfig"
|
|
source "drivers/infiniband/hw/cxgb4/Kconfig"
|
|
source "drivers/infiniband/hw/efa/Kconfig"
|
|
source "drivers/infiniband/hw/i40iw/Kconfig"
|
|
source "drivers/infiniband/hw/mlx4/Kconfig"
|
|
source "drivers/infiniband/hw/mlx5/Kconfig"
|
|
source "drivers/infiniband/hw/ocrdma/Kconfig"
|
|
source "drivers/infiniband/hw/vmw_pvrdma/Kconfig"
|
|
source "drivers/infiniband/hw/usnic/Kconfig"
|
|
source "drivers/infiniband/hw/hns/Kconfig"
|
|
source "drivers/infiniband/hw/bnxt_re/Kconfig"
|
|
source "drivers/infiniband/hw/hfi1/Kconfig"
|
|
source "drivers/infiniband/hw/qedr/Kconfig"
|
|
source "drivers/infiniband/sw/rdmavt/Kconfig"
|
|
source "drivers/infiniband/sw/rxe/Kconfig"
|
|
source "drivers/infiniband/sw/siw/Kconfig"
|
|
endif
|
|
|
|
source "drivers/infiniband/ulp/ipoib/Kconfig"
|
|
|
|
source "drivers/infiniband/ulp/srp/Kconfig"
|
|
source "drivers/infiniband/ulp/srpt/Kconfig"
|
|
|
|
source "drivers/infiniband/ulp/iser/Kconfig"
|
|
source "drivers/infiniband/ulp/isert/Kconfig"
|
|
source "drivers/infiniband/ulp/rtrs/Kconfig"
|
|
|
|
source "drivers/infiniband/ulp/opa_vnic/Kconfig"
|
|
|
|
endif # INFINIBAND
|