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nvme: read the subsystem NQN from Identify Controller

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NVMe 1.2.1 or later requires controllers to provide a subsystem NQN in the
Identify controller data structures.  Use this NQN for the subsysnqn
sysfs attribute by storing it in the nvme_ctrl structure after verifying
it.  For older controllers we generate a "fake" NQN per non-normative
text in the NVMe 1.3 spec.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig
2017-06-26 12:39:02 +02:00
committed by Jens Axboe
parent 942fbab4cd
commit 180de00700
7 changed files with 29 additions and 18 deletions
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1
drivers/nvme/host/rdma.c
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@@ -1757,7 +1757,6 @@ static const struct nvme_ctrl_ops nvme_rdma_ctrl_ops = {
.free_ctrl = nvme_rdma_free_ctrl,
.submit_async_event = nvme_rdma_submit_async_event,
.delete_ctrl = nvme_rdma_del_ctrl,
.get_subsysnqn = nvmf_get_subsysnqn,
.get_address = nvmf_get_address,
};