nvme-rdma: add a NVMe over Fabrics RDMA host driver (71102307) · Commits · 戴 / test

This patch implements the RDMA host (initiator in SCSI speak) driver. It can be used to connect to remote NVMe over Fabrics controllers over Infiniband, RoCE or iWarp, and uses the existing NVMe core driver as well a the new fabrics library. To connect to all NVMe over Fabrics controller reachable on a given taget port using RDMA/CM use the following command: nvme connect-all -t rdma -a $IPADDR This requires the latest version of nvme-cli with Fabrics support. Signed-off-by:

Jay Freyensee <james.p.freyensee@intel.com> Signed-off-by:

Ming Lin <ming.l@ssi.samsung.com> Signed-off-by:

Sagi Grimberg <sagi@grimberg.me> Signed-off-by:

Christoph Hellwig <hch@lst.de> Reviewed-by:

Steve Wise <swise@opengridcomputing.com> Tested-by:

Steve Wise <swise@opengridcomputing.com> Signed-off-by:

Jens Axboe <axboe@fb.com>

drivers/nvme/host/Kconfig

+16 −0

Original line number	Diff line number	Diff line
		@@ -27,3 +27,19 @@ config BLK_DEV_NVME_SCSI

		config NVME_FABRICS
		tristate

		config NVME_RDMA
		tristate "NVM Express over Fabrics RDMA host driver"
		depends on INFINIBAND
		depends on BLK_DEV_NVME
		select NVME_FABRICS
		select SG_POOL
		help
		This provides support for the NVMe over Fabrics protocol using
		the RDMA (Infiniband, RoCE, iWarp) transport. This allows you
		to use remote block devices exported using the NVMe protocol set.

		To configure a NVMe over Fabrics controller use the nvme-cli tool
		from https://github.com/linux-nvme/nvme-cli.

		If unsure, say N.

drivers/nvme/host/Makefile

+3 −0

Original line number	Diff line number	Diff line
		obj-$(CONFIG_NVME_CORE) += nvme-core.o
		obj-$(CONFIG_BLK_DEV_NVME) += nvme.o
		obj-$(CONFIG_NVME_FABRICS) += nvme-fabrics.o
		obj-$(CONFIG_NVME_RDMA) += nvme-rdma.o

		nvme-core-y := core.o
		nvme-core-$(CONFIG_BLK_DEV_NVME_SCSI) += scsi.o
		@@ -9,3 +10,5 @@ nvme-core-$(CONFIG_NVM) += lightnvm.o
		nvme-y += pci.o

		nvme-fabrics-y += fabrics.o

		nvme-rdma-y += rdma.o

drivers/nvme/host/rdma.c

0 → 100644

+2021 −0

File added.

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