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nvme: add comment for unaligned "fake" nqn

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Current "fake" nqn field is "nqn.2014.08.org.nvmexpress:", it is
not aligned with the canonical version for history reasons.

Signed-off-by: Linjun Bao <meljbao@gmail.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Linjun Bao 2022-08-11 15:40:24 +08:00 committed by Christoph Hellwig
parent 91418cc4fd
commit 1abc696174
1 changed files with 5 additions and 1 deletions
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6
drivers/nvme/host/core.c
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@ -2704,7 +2704,11 @@ static void nvme_init_subnqn(struct nvme_subsystem *subsys, struct nvme_ctrl *ct
dev_warn(ctrl->device, "missing or invalid SUBNQN field.\n");
}
/* Generate a "fake" NQN per Figure 254 in NVMe 1.3 + ECN 001 */
/*
* Generate a "fake" NQN similar to the one in Section 4.5 of the NVMe
* Base Specification 2.0. It is slightly different from the format
* specified there due to historic reasons, and we can't change it now.
*/
off = snprintf(subsys->subnqn, NVMF_NQN_SIZE,
"nqn.2014.08.org.nvmexpress:%04x%04x",
le16_to_cpu(id->vid), le16_to_cpu(id->ssvid));