kernel.git/drivers/nvme/host/Kconfig, branch linux-5.5.y

nvme: Add hardware monitoring support

2019-11-11T16:57:35Z

nvme devices report temperature information in the controller information (for limits) and in the smart log. Currently, the only means to retrieve this information is the nvme command line interface, which requires super-user privileges. At the same time, it would be desirable to be able to use NVMe temperature information for thermal control. This patch adds support to read NVMe temperatures from the kernel using the hwmon API and adds temperature zones for NVMe drives. The thermal subsystem can use this information to set thermal policies, and userspace can access it using libsensors and/or the "sensors" command. Example output from the "sensors" command: nvme0-pci-0100 Adapter: PCI adapter Composite: +39.0°C (high = +85.0°C, crit = +85.0°C) Sensor 1: +39.0°C Sensor 2: +41.0°C Reviewed-by: Christoph Hellwig Signed-off-by: Guenter Roeck Signed-off-by: Keith Busch

nvme: tcp: selects CRYPTO_CRC32C for nvme-tcp

2019-08-29T19:55:01Z

The tcp host module is now taking those APIs from crypto ahash: (1) crypto_ahash_final() (2) crypto_ahash_digest() (3) crypto_alloc_ahash() nvme-tcp should depends on CRYPTO_CRC32C. Cc: Christoph Hellwig Cc: Keith Busch Cc: Jens Axboe Reviewed-by: Sagi Grimberg Reviewed-by: Christoph Hellwig Signed-off-by: Minwoo Im Signed-off-by: Sagi Grimberg

treewide: Add SPDX license identifier - Makefile/Kconfig

2019-05-21T08:50:46Z

Add SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any form These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman

nvme-tcp: add NVMe over TCP host driver

2018-12-13T08:58:58Z

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 Signed-off-by: Roy Shterman Signed-off-by: Solganik Alexander Signed-off-by: Christoph Hellwig

IB: Revert "remove redundant INFINIBAND kconfig dependencies"

2018-05-28T16:40:16Z

Several subsystems depend on INFINIBAND_ADDR_TRANS, which in turn depends on INFINIBAND. However, when with CONFIG_INIFIBAND=m, this leads to a link error when another driver using it is built-in. The INFINIBAND_ADDR_TRANS dependency is insufficient here as this is a 'bool' symbol that does not force anything to be a module in turn. fs/cifs/smbdirect.o: In function `smbd_disconnect_rdma_work': smbdirect.c:(.text+0x1e4): undefined reference to `rdma_disconnect' net/9p/trans_rdma.o: In function `rdma_request': trans_rdma.c:(.text+0x7bc): undefined reference to `rdma_disconnect' net/9p/trans_rdma.o: In function `rdma_destroy_trans': trans_rdma.c:(.text+0x830): undefined reference to `ib_destroy_qp' trans_rdma.c:(.text+0x858): undefined reference to `ib_dealloc_pd' Fixes: 9533b292a7ac ("IB: remove redundant INFINIBAND kconfig dependencies") Signed-off-by: Arnd Bergmann Acked-by: Greg Thelen Signed-off-by: Jason Gunthorpe

IB: remove redundant INFINIBAND kconfig dependencies

2018-05-09T12:51:03Z

INFINIBAND_ADDR_TRANS depends on INFINIBAND. So there's no need for options which depend INFINIBAND_ADDR_TRANS to also depend on INFINIBAND. Remove the unnecessary INFINIBAND depends. Signed-off-by: Greg Thelen Signed-off-by: Doug Ledford

nvme: depend on INFINIBAND_ADDR_TRANS

2018-04-27T15:15:43Z

NVME_RDMA code depends on INFINIBAND_ADDR_TRANS provided symbols. So declare the kconfig dependency. This is necessary to allow for enabling INFINIBAND without INFINIBAND_ADDR_TRANS. Signed-off-by: Greg Thelen Cc: Tarick Bedeir Signed-off-by: Doug Ledford

nvme: implement multipath access to nvme subsystems

2017-11-11T02:53:25Z

This patch adds native multipath support to the nvme driver. For each namespace we create only single block device node, which can be used to access that namespace through any of the controllers that refer to it. The gendisk for each controllers path to the name space still exists inside the kernel, but is hidden from userspace. The character device nodes are still available on a per-controller basis. A new link from the sysfs directory for the subsystem allows to find all controllers for a given subsystem. Currently we will always send I/O to the first available path, this will be changed once the NVMe Asynchronous Namespace Access (ANA) TP is ratified and implemented, at which point we will look at the ANA state for each namespace. Another possibility that was prototyped is to use the path that is closes to the submitting NUMA code, which will be mostly interesting for PCI, but might also be useful for RDMA or FC transports in the future. There is not plan to implement round robin or I/O service time path selectors, as those are not scalable with the performance rates provided by NVMe. The multipath device will go away once all paths to it disappear, any delay to keep it alive needs to be implemented at the controller level. Signed-off-by: Christoph Hellwig Reviewed-by: Keith Busch Reviewed-by: Martin K. Petersen Reviewed-by: Hannes Reinecke Signed-off-by: Jens Axboe

nvme: Remove SCSI translations

2017-06-28T14:14:13Z

The SCSI-to-NVMe translations were added to assist storage applications utilizing SG_IO transitioning to NVMe. It was always recommended, however, to use native NVMe for device management as too much is lost in translation and the maintenance burden in keeping this kludgey layer around has been neglected such that much of the translations are completely broken. This patch removes SG_IO handling from NVMe to avoid any confusion regarding maintenance support for this interface. The config option for NVMe SCSI emulation has been disabled by default since 4.5. The driver has supported native nvme user commands since the beginning, and native tooling is publicly available for use or as reference for anyone writing their own tools, so there's no excuse for hanging onto a broken crutch. Signed-off-by: Keith Busch Acked-by: Jens Axboe Reviewed-by: Martin K. Petersen Reviewed-by: Sagi Grimberg Reviewed-by: Max Gurtovoy Reviewed-by: Christoph Hellwig Reviewed-by: Johannes Thumshirn Reviewed-by: Guan Junxiong Signed-off-by: Jens Axboe

nvme-fabrics: Add host support for FC transport

2016-12-06T08:17:56Z

Implements the FC-NVME T11 definition of how nvme fabric capsules are performed on an FC fabric. Utilizes a lower-layer API to FC host adapters to send/receive FC-4 LS operations and FCP operations that comprise NVME over FC operation. The T11 definitions for FC-4 Link Services are implemented which create NVMeOF connections. Implements the hooks with blk-mq to then submit admin and io requests to the different connections. Signed-off-by: James Smart Reviewed-by: Jay Freyensee Reviewed-by: Johannes Thumshirn Signed-off-by: Christoph Hellwig