[PATCHv3 03/11] nvmet: implement supported log pages

[Keith Busch]

From: Keith Busch <kbusch at kernel.org>

This log is required for nvme 2.1.

Signed-off-by: Keith Busch <kbusch at kernel.org>
---
 drivers/nvme/target/admin-cmd.c | 29 +++++++++++++++++++++++++++++
 include/linux/nvme.h            |  1 +
 2 files changed, 30 insertions(+)

diff --git a/drivers/nvme/target/admin-cmd.c b/drivers/nvme/target/admin-cmd.c
index a13242e791c0f..b8229d6c9998d 100644
--- a/drivers/nvme/target/admin-cmd.c
+++ b/drivers/nvme/target/admin-cmd.c
@@ -71,6 +71,33 @@ static void nvmet_execute_get_log_page_error(struct nvmet_req *req)
 	nvmet_req_complete(req, 0);
 }
 
+static void nvmet_execute_get_supported_log_pages(struct nvmet_req *req)
+{
+	__le32 *logs;
+	u16 status;
+
+	logs = kzalloc(1024, GFP_KERNEL);
+	if (!logs) {
+		status = NVME_SC_INTERNAL;
+		goto out;
+	}
+
+	logs[NVME_LOG_SUPPORTED] = cpu_to_le32(1);
+	logs[NVME_LOG_ERROR] = cpu_to_le32(1);
+	logs[NVME_LOG_SMART] = cpu_to_le32(1);
+	logs[NVME_LOG_FW_SLOT] = cpu_to_le32(1);
+	logs[NVME_LOG_CHANGED_NS] = cpu_to_le32(1);
+	logs[NVME_LOG_CMD_EFFECTS] = cpu_to_le32(1);
+	logs[NVME_LOG_ENDURANCE_GROUP] = cpu_to_le32(1);
+	logs[NVME_LOG_ANA] = cpu_to_le32(1);
+	logs[NVME_LOG_RMI] = cpu_to_le32(1);
+
+	status = nvmet_copy_to_sgl(req, 0, logs, 1024);
+	kfree(logs);
+out:
+	nvmet_req_complete(req, 0);
+}
+
 static u16 nvmet_get_smart_log_nsid(struct nvmet_req *req,
 		struct nvme_smart_log *slog)
 {
@@ -323,6 +350,8 @@ static void nvmet_execute_get_log_page(struct nvmet_req *req)
 		return;
 
 	switch (req->cmd->get_log_page.lid) {
+	case NVME_LOG_SUPPORTED:
+		return nvmet_execute_get_supported_log_pages(req);
 	case NVME_LOG_ERROR:
 		return nvmet_execute_get_log_page_error(req);
 	case NVME_LOG_SMART:
diff --git a/include/linux/nvme.h b/include/linux/nvme.h
index 0f263c7e63192..a94e2280d350e 100644
--- a/include/linux/nvme.h
+++ b/include/linux/nvme.h
@@ -1245,6 +1245,7 @@ enum {
 	NVME_FEAT_WRITE_PROTECT	= 0x84,
 	NVME_FEAT_VENDOR_START	= 0xC0,
 	NVME_FEAT_VENDOR_END	= 0xFF,
+	NVME_LOG_SUPPORTED	= 0x00,
 	NVME_LOG_ERROR		= 0x01,
 	NVME_LOG_SMART		= 0x02,
 	NVME_LOG_FW_SLOT	= 0x03,
-- 
2.43.5