From 28dd5cf70aaac2a12a16847ae0a978f0b0575194 Mon Sep 17 00:00:00 2001 From: Omri Mann Date: Wed, 30 Aug 2017 15:22:59 +0300 Subject: [PATCH] nvmet: add support for reporting the host identifier And fix the Get/Set Log Page implementation to take all 8 bits of the feature identifier into account. Signed-off-by: Omri Mann Reviewed-by: Sagi Grimberg Signed-off-by: Christoph Hellwig [hch: used the UUID API, updated changelog] --- drivers/nvme/target/admin-cmd.c | 17 +++++++++++++++-- drivers/nvme/target/fabrics-cmd.c | 1 + drivers/nvme/target/nvmet.h | 1 + 3 files changed, 17 insertions(+), 2 deletions(-) diff --git a/drivers/nvme/target/admin-cmd.c b/drivers/nvme/target/admin-cmd.c index 9496c71..c4a0bf3 100644 --- a/drivers/nvme/target/admin-cmd.c +++ b/drivers/nvme/target/admin-cmd.c @@ -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; diff --git a/drivers/nvme/target/fabrics-cmd.c b/drivers/nvme/target/fabrics-cmd.c index 3cc1726..859a667 100644 --- a/drivers/nvme/target/fabrics-cmd.c +++ b/drivers/nvme/target/fabrics-cmd.c @@ -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) { diff --git a/drivers/nvme/target/nvmet.h b/drivers/nvme/target/nvmet.h index e3b244c..7d261ab 100644 --- a/drivers/nvme/target/nvmet.h +++ b/drivers/nvme/target/nvmet.h @@ -115,6 +115,7 @@ struct nvmet_ctrl { u32 cc; u32 csts; + uuid_t hostid; u16 cntlid; u32 kato; -- 2.7.4