Commit e2758c76 authored by Keith Busch's avatar Keith Busch
Browse files

nvmet: support for csi identify ns 



Implements reporting the I/O Command Set Independent Identify Namespace
command.

Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarKeith Busch <kbusch@kernel.org>
parent 5fd075cd

drivers/nvme/target/admin-cmd.c

+32 −0
Original line number Diff line number Diff line
@@ -912,6 +912,35 @@ static void nvme_execute_identify_ns_nvm(struct nvmet_req *req) 
	nvmet_req_complete(req, status);

}



static void nvmet_execute_id_cs_indep(struct nvmet_req *req)

{

	struct nvme_id_ns_cs_indep *id;

	u16 status;



	status = nvmet_req_find_ns(req);

	if (status)

		goto out;



	id = kzalloc(sizeof(*id), GFP_KERNEL);

	if (!id) {

		status = NVME_SC_INTERNAL;

		goto out;

	}



	id->nstat = NVME_NSTAT_NRDY;

	id->anagrpid = cpu_to_le32(req->ns->anagrpid);

	id->nmic = NVME_NS_NMIC_SHARED;

	if (req->ns->readonly)

		id->nsattr |= NVME_NS_ATTR_RO;

	if (req->ns->bdev && !bdev_nonrot(req->ns->bdev))

		id->nsfeat |= NVME_NS_ROTATIONAL;



	status = nvmet_copy_to_sgl(req, 0, id, sizeof(*id));

	kfree(id);

out:

	nvmet_req_complete(req, status);

}



static void nvmet_execute_identify(struct nvmet_req *req)

{

	if (!nvmet_check_transfer_len(req, NVME_IDENTIFY_DATA_SIZE))
@@ -959,6 +988,9 @@ static void nvmet_execute_identify(struct nvmet_req *req) 
	case NVME_ID_CNS_NS_ACTIVE_LIST_CS:

		nvmet_execute_identify_nslist(req, true);

		return;

	case NVME_ID_CNS_NS_CS_INDEP:

		nvmet_execute_id_cs_indep(req);

		return;

	case NVME_ID_CNS_ENDGRP_LIST:

		nvmet_execute_identify_endgrp_list(req);

		return;

include/linux/nvme.h

+1 −0
Original line number Diff line number Diff line
@@ -563,6 +563,7 @@ enum { 
	NVME_NS_FLBAS_LBA_SHIFT	= 1,

	NVME_NS_FLBAS_META_EXT	= 0x10,

	NVME_NS_NMIC_SHARED	= 1 << 0,

	NVME_NS_ROTATIONAL	= 1 << 4,

	NVME_LBAF_RP_BEST	= 0,

	NVME_LBAF_RP_BETTER	= 1,

	NVME_LBAF_RP_GOOD	= 2,