nvmet: add error log page cmd handler (11ad5077) · Commits · 戴 / test

drivers/nvme/target/admin-cmd.c

+29 −7

Original line number	Diff line number	Diff line
		@@ -37,6 +37,34 @@ static void nvmet_execute_get_log_page_noop(struct nvmet_req *req)
		nvmet_req_complete(req, nvmet_zero_sgl(req, 0, req->data_len));
		}

		static void nvmet_execute_get_log_page_error(struct nvmet_req *req)
		{
		struct nvmet_ctrl *ctrl = req->sq->ctrl;
		u16 status = NVME_SC_SUCCESS;
		unsigned long flags;
		off_t offset = 0;
		u64 slot;
		u64 i;

		spin_lock_irqsave(&ctrl->error_lock, flags);
		slot = ctrl->err_counter % NVMET_ERROR_LOG_SLOTS;

		for (i = 0; i < NVMET_ERROR_LOG_SLOTS; i++) {
		status = nvmet_copy_to_sgl(req, offset, &ctrl->slots[slot],
		sizeof(struct nvme_error_slot));
		if (status)
		break;

		if (slot == 0)
		slot = NVMET_ERROR_LOG_SLOTS - 1;
		else
		slot--;
		offset += sizeof(struct nvme_error_slot);
		}
		spin_unlock_irqrestore(&ctrl->error_lock, flags);
		nvmet_req_complete(req, status);
		}

		static u16 nvmet_get_smart_log_nsid(struct nvmet_req *req,
		struct nvme_smart_log *slog)
		{
		@@ -789,13 +817,7 @@ u16 nvmet_parse_admin_cmd(struct nvmet_req *req)

		switch (cmd->get_log_page.lid) {
		case NVME_LOG_ERROR:
		/*
		* We currently never set the More bit in the status
		* field, so all error log entries are invalid and can
		* be zeroed out. This is called a minum viable
		* implementation (TM) of this mandatory log page.
		*/
		req->execute = nvmet_execute_get_log_page_noop;
		req->execute = nvmet_execute_get_log_page_error;
		return 0;
		case NVME_LOG_SMART:
		req->execute = nvmet_execute_get_log_page_smart;