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Commit 3f2304f8 authored by Sagi Grimberg's avatar Sagi Grimberg Committed by Christoph Hellwig
Browse files

nvme-tcp: add NVMe over TCP host driver 



This patch implements the NVMe over TCP host driver. It can be used to
connect to remote NVMe over Fabrics subsystems over good old TCP/IP.

The driver implements the TP 8000 of how nvme over fabrics capsules and
data are encapsulated in nvme-tcp pdus and exchaged on top of a TCP byte
stream. nvme-tcp header and data digest are supported as well.

To connect to all NVMe over Fabrics controllers reachable on a given taget
port over TCP use the following command:

	nvme connect-all -t tcp -a $IPADDR

This requires the latest version of nvme-cli with TCP support.

Signed-off-by: default avatarSagi Grimberg <sagi@lightbitslabs.com>
Signed-off-by: default avatarRoy Shterman <roys@lightbitslabs.com>
Signed-off-by: default avatarSolganik Alexander <sashas@lightbitslabs.com>
Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
parent ad4f530e

drivers/nvme/host/Kconfig

+15 −0
Original line number Diff line number Diff line
@@ -57,3 +57,18 @@ config NVME_FC 
	  from https://github.com/linux-nvme/nvme-cli.



	  If unsure, say N.



config NVME_TCP

	tristate "NVM Express over Fabrics TCP host driver"

	depends on INET

	depends on BLK_DEV_NVME

	select NVME_FABRICS

	help

	  This provides support for the NVMe over Fabrics protocol using

	  the TCP 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
@@ -7,6 +7,7 @@ obj-$(CONFIG_BLK_DEV_NVME) += nvme.o 
obj-$(CONFIG_NVME_FABRICS)		+= nvme-fabrics.o

obj-$(CONFIG_NVME_RDMA)			+= nvme-rdma.o

obj-$(CONFIG_NVME_FC)			+= nvme-fc.o

obj-$(CONFIG_NVME_TCP)			+= nvme-tcp.o



nvme-core-y				:= core.o

nvme-core-$(CONFIG_TRACING)		+= trace.o
@@ -21,3 +22,5 @@ nvme-fabrics-y += fabrics.o 
nvme-rdma-y				+= rdma.o



nvme-fc-y				+= fc.o



nvme-tcp-y				+= tcp.o

drivers/nvme/host/tcp.c

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