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Commit 71102307 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Jens Axboe
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nvme-rdma: add a NVMe over Fabrics RDMA host driver 



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: default avatarJay Freyensee <james.p.freyensee@intel.com>
Signed-off-by: default avatarMing Lin <ming.l@ssi.samsung.com>
Signed-off-by: default avatarSagi Grimberg <sagi@grimberg.me>
Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarSteve Wise <swise@opengridcomputing.com>
Tested-by: default avatarSteve Wise <swise@opengridcomputing.com>
Signed-off-by: default avatarJens Axboe <axboe@fb.com>
parent 8f000cac

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

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+2021 −0

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