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nvmet: implement active command set ns list

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This is required for nvme 2.1 for targets that support multiple command
sets. We support NVM and ZNS, so are required to support this
identification.

Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Matias Bjørling <matias.bjorling@wdc.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
This commit is contained in:
Keith Busch 2024-11-04 13:24:36 -08:00
parent 64a51080ea
commit 61c9967cd6
2 changed files with 8 additions and 2 deletions
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9
drivers/nvme/target/admin-cmd.c
View File

@ -592,7 +592,7 @@ static void nvmet_execute_identify_ns(struct nvmet_req *req)
nvmet_req_complete(req, status);
}
static void nvmet_execute_identify_nslist(struct nvmet_req *req)
static void nvmet_execute_identify_nslist(struct nvmet_req *req, bool match_css)
{
static const int buf_size = NVME_IDENTIFY_DATA_SIZE;
struct nvmet_ctrl *ctrl = req->sq->ctrl;
@ -622,6 +622,8 @@ static void nvmet_execute_identify_nslist(struct nvmet_req *req)
xa_for_each(&ctrl->subsys->namespaces, idx, ns) {
if (ns->nsid <= min_nsid)
continue;
if (match_css && req->ns->csi != req->cmd->identify.csi)
continue;
list[i++] = cpu_to_le32(ns->nsid);
if (i == buf_size / sizeof(__le32))
break;
@ -728,7 +730,7 @@ static void nvmet_execute_identify(struct nvmet_req *req)
nvmet_execute_identify_ctrl(req);
return;
case NVME_ID_CNS_NS_ACTIVE_LIST:
nvmet_execute_identify_nslist(req);
nvmet_execute_identify_nslist(req, false);
return;
case NVME_ID_CNS_NS_DESC_LIST:
nvmet_execute_identify_desclist(req);
@ -759,6 +761,9 @@ static void nvmet_execute_identify(struct nvmet_req *req)
break;
}
break;
case NVME_ID_CNS_NS_ACTIVE_LIST_CS:
nvmet_execute_identify_nslist(req, true);
return;
}
pr_debug("unhandled identify cns %d on qid %d\n",

1
include/linux/nvme.h
View File

@ -522,6 +522,7 @@ enum {
NVME_ID_CNS_NS_DESC_LIST = 0x03,
NVME_ID_CNS_CS_NS = 0x05,
NVME_ID_CNS_CS_CTRL = 0x06,
NVME_ID_CNS_NS_ACTIVE_LIST_CS = 0x07,
NVME_ID_CNS_NS_CS_INDEP = 0x08,
NVME_ID_CNS_NS_PRESENT_LIST = 0x10,
NVME_ID_CNS_NS_PRESENT = 0x11,