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nvmet: add support for reporting the host identifier

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And fix the Get/Set Log Page implementation to take all 8 bits of the
feature identifier into account.

Signed-off-by: Omri Mann <omri@excelero.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
[hch: used the UUID API, updated changelog]
This commit is contained in:
Omri Mann 2017-08-30 15:22:59 +03:00 committed by Christoph Hellwig
parent 63263d60e0
commit 28dd5cf70a
3 changed files with 17 additions and 2 deletions
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17
drivers/nvme/target/admin-cmd.c
View File

@ -443,7 +443,7 @@ static void nvmet_execute_set_features(struct nvmet_req *req)
u32 val32;
u16 status = 0;
switch (cdw10 & 0xf) {
switch (cdw10 & 0xff) {
case NVME_FEAT_NUM_QUEUES:
nvmet_set_result(req,
(subsys->max_qid - 1) | ((subsys->max_qid - 1) << 16));
@ -453,6 +453,9 @@ static void nvmet_execute_set_features(struct nvmet_req *req)
req->sq->ctrl->kato = DIV_ROUND_UP(val32, 1000);
nvmet_set_result(req, req->sq->ctrl->kato);
break;
case NVME_FEAT_HOST_ID:
status = NVME_SC_CMD_SEQ_ERROR | NVME_SC_DNR;
break;
default:
status = NVME_SC_INVALID_FIELD | NVME_SC_DNR;
break;
@ -467,7 +470,7 @@ static void nvmet_execute_get_features(struct nvmet_req *req)
u32 cdw10 = le32_to_cpu(req->cmd->common.cdw10[0]);
u16 status = 0;
switch (cdw10 & 0xf) {
switch (cdw10 & 0xff) {
/*
* These features are mandatory in the spec, but we don't
* have a useful way to implement them. We'll eventually
@ -501,6 +504,16 @@ static void nvmet_execute_get_features(struct nvmet_req *req)
case NVME_FEAT_KATO:
nvmet_set_result(req, req->sq->ctrl->kato * 1000);
break;
case NVME_FEAT_HOST_ID:
/* need 128-bit host identifier flag */
if (!(req->cmd->common.cdw10[1] & cpu_to_le32(1 << 0))) {
status = NVME_SC_INVALID_FIELD | NVME_SC_DNR;
break;
}
status = nvmet_copy_to_sgl(req, 0, &req->sq->ctrl->hostid,
sizeof(req->sq->ctrl->hostid));
break;
default:
status = NVME_SC_INVALID_FIELD | NVME_SC_DNR;
break;

1
drivers/nvme/target/fabrics-cmd.c
View File

@ -154,6 +154,7 @@ static void nvmet_execute_admin_connect(struct nvmet_req *req)
le32_to_cpu(c->kato), &ctrl);
if (status)
goto out;
uuid_copy(&ctrl->hostid, &d->hostid);
status = nvmet_install_queue(ctrl, req);
if (status) {

1
drivers/nvme/target/nvmet.h
View File

@ -115,6 +115,7 @@ struct nvmet_ctrl {
u32 cc;
u32 csts;
uuid_t hostid;
u16 cntlid;
u32 kato;