nvme-tcp: add NVMe over TCP host driver (3f2304f8) · Commits · 戴 / test

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:

Sagi Grimberg <sagi@lightbitslabs.com> Signed-off-by:

Roy Shterman <roys@lightbitslabs.com> Signed-off-by:

Solganik Alexander <sashas@lightbitslabs.com> Signed-off-by:

Christoph Hellwig <hch@lst.de>

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

0 → 100644

+2242 −0

File added.

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