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: 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>
This commit is contained in:
Christoph Hellwig 2016-07-06 21:55:52 +09:00 committed by Jens Axboe
parent 8f000cac6e
commit 7110230719
3 changed files with 2040 additions and 0 deletions

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@ -27,3 +27,19 @@ config BLK_DEV_NVME_SCSI
config NVME_FABRICS config NVME_FABRICS
tristate 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.

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@ -1,6 +1,7 @@
obj-$(CONFIG_NVME_CORE) += nvme-core.o obj-$(CONFIG_NVME_CORE) += nvme-core.o
obj-$(CONFIG_BLK_DEV_NVME) += nvme.o obj-$(CONFIG_BLK_DEV_NVME) += nvme.o
obj-$(CONFIG_NVME_FABRICS) += nvme-fabrics.o obj-$(CONFIG_NVME_FABRICS) += nvme-fabrics.o
obj-$(CONFIG_NVME_RDMA) += nvme-rdma.o
nvme-core-y := core.o nvme-core-y := core.o
nvme-core-$(CONFIG_BLK_DEV_NVME_SCSI) += scsi.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-y += pci.o
nvme-fabrics-y += fabrics.o nvme-fabrics-y += fabrics.o
nvme-rdma-y += rdma.o

2021
drivers/nvme/host/rdma.c Normal file

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