nvme: track subsystems

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This adds a new nvme_subsystem structure so that we can track multiple
controllers that belong to a single subsystem.  For now we only use it
to store the NQN, and to check that we don't have duplicate NQNs unless
the involved subsystems support multiple controllers.

Includes code originally from Hannes Reinecke to expose the subsystems
in sysfs.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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This commit is contained in:

Christoph Hellwig 2017-11-09 13:48:55 +01:00 • committed by Jens Axboe

parent 9a95e4ef70

commit ab9e00cc72

3 changed files with 205 additions and 36 deletions

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210

drivers/nvme/host/core.c

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4

drivers/nvme/host/fabrics.c

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27

drivers/nvme/host/nvme.h

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