qedf: Add support for populating ethernet TLVs.

This patch adds callbacks for providing the ethernet protocol driver TLVs.
Signed-off-by: NChad Dupuis <chad.dupuis@cavium.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/scsi/qedf/qedf.h

@@ -383,11 +383,16 @@ struct qedf_ctx {
 	u32 flogi_failed;
 
 	/* Used for fc statistics */
+	struct mutex stats_mutex;
 	u64 input_requests;
 	u64 output_requests;
 	u64 control_requests;
 	u64 packet_aborts;
 	u64 alloc_failures;
+	u8 lun_resets;
+	u8 target_resets;
+	u8 task_set_fulls;
+	u8 busy;
 };
 
 struct io_bdt {
@@ -496,6 +501,7 @@ extern int qedf_post_io_req(struct qedf_rport *fcport,
 extern void qedf_process_seq_cleanup_compl(struct qedf_ctx *qedf,
 	struct fcoe_cqe *cqe, struct qedf_ioreq *io_req);
 extern int qedf_send_flogi(struct qedf_ctx *qedf);
+extern void qedf_get_protocol_tlv_data(void *dev, void *data);
 extern void qedf_fp_io_handler(struct work_struct *work);
 
 #define FCOE_WORD_TO_BYTE  4

drivers/scsi/qedf/qedf_debugfs.c

@@ -439,7 +439,6 @@ qedf_dbg_offload_stats_open(struct inode *inode, struct file *file)
 	return single_open(file, qedf_offload_stats_show, qedf);
 }
 
-
 const struct file_operations qedf_dbg_fops[] = {
 	qedf_dbg_fileops(qedf, fp_int),
 	qedf_dbg_fileops_seq(qedf, io_trace),

drivers/scsi/qedf/qedf_io.c

@@ -1200,6 +1200,12 @@ void qedf_scsi_completion(struct qedf_ctx *qedf, struct fcoe_cqe *cqe,
 					fcport->retry_delay_timestamp =
 					    jiffies + (qualifier * HZ / 10);
 				}
+				/* Record stats */
+				if (io_req->cdb_status ==
+				    SAM_STAT_TASK_SET_FULL)
+					qedf->task_set_fulls++;
+				else
+					qedf->busy++;
 			}
 		}
 		if (io_req->fcp_resid)
@@ -1866,6 +1872,11 @@ static int qedf_execute_tmf(struct qedf_rport *fcport, struct scsi_cmnd *sc_cmd,
 		goto reset_tmf_err;
 	}
 
+	if (tm_flags == FCP_TMF_LUN_RESET)
+		qedf->lun_resets++;
+	else if (tm_flags == FCP_TMF_TGT_RESET)
+		qedf->target_resets++;
+
 	/* Initialize rest of io_req fields */
 	io_req->sc_cmd = sc_cmd;
 	io_req->fcport = fcport;

drivers/scsi/qedf/qedf_main.c

@@ -566,6 +566,7 @@ static struct qed_fcoe_cb_ops qedf_cb_ops = {
 	{
 		.link_update = qedf_link_update,
 		.dcbx_aen = qedf_dcbx_handler,
+		.get_protocol_tlv_data = qedf_get_protocol_tlv_data,
 	}
 };
 
@@ -1746,6 +1747,8 @@ static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host
 		goto out;
 	}
 
+	mutex_lock(&qedf->stats_mutex);
+
 	/* Query firmware for offload stats */
 	qed_ops->get_stats(qedf->cdev, fw_fcoe_stats);
 
@@ -1779,6 +1782,7 @@ static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host
 	qedf_stats->fcp_packet_aborts += qedf->packet_aborts;
 	qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures;
 
+	mutex_unlock(&qedf->stats_mutex);
 	kfree(fw_fcoe_stats);
 out:
 	return qedf_stats;
@@ -2948,6 +2952,7 @@ static int __qedf_probe(struct pci_dev *pdev, int mode)
 		qedf->stop_io_on_error = false;
 		pci_set_drvdata(pdev, qedf);
 		init_completion(&qedf->fipvlan_compl);
+		mutex_init(&qedf->stats_mutex);
 
 		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO,
 		   "QLogic FastLinQ FCoE Module qedf %s, "
@@ -3392,6 +3397,88 @@ static void qedf_remove(struct pci_dev *pdev)
 	__qedf_remove(pdev, QEDF_MODE_NORMAL);
 }
 
+/*
+ * Protocol TLV handler
+ */
+void qedf_get_protocol_tlv_data(void *dev, void *data)
+{
+	struct qedf_ctx *qedf = dev;
+	struct qed_mfw_tlv_fcoe *fcoe = data;
+	struct fc_lport *lport = qedf->lport;
+	struct Scsi_Host *host = lport->host;
+	struct fc_host_attrs *fc_host = shost_to_fc_host(host);
+	struct fc_host_statistics *hst;
+
+	/* Force a refresh of the fc_host stats including offload stats */
+	hst = qedf_fc_get_host_stats(host);
+
+	fcoe->qos_pri_set = true;
+	fcoe->qos_pri = 3; /* Hard coded to 3 in driver */
+
+	fcoe->ra_tov_set = true;
+	fcoe->ra_tov = lport->r_a_tov;
+
+	fcoe->ed_tov_set = true;
+	fcoe->ed_tov = lport->e_d_tov;
+
+	fcoe->npiv_state_set = true;
+	fcoe->npiv_state = 1; /* NPIV always enabled */
+
+	fcoe->num_npiv_ids_set = true;
+	fcoe->num_npiv_ids = fc_host->npiv_vports_inuse;
+
+	/* Certain attributes we only want to set if we've selected an FCF */
+	if (qedf->ctlr.sel_fcf) {
+		fcoe->switch_name_set = true;
+		u64_to_wwn(qedf->ctlr.sel_fcf->switch_name, fcoe->switch_name);
+	}
+
+	fcoe->port_state_set = true;
+	/* For qedf we're either link down or fabric attach */
+	if (lport->link_up)
+		fcoe->port_state = QED_MFW_TLV_PORT_STATE_FABRIC;
+	else
+		fcoe->port_state = QED_MFW_TLV_PORT_STATE_OFFLINE;
+
+	fcoe->link_failures_set = true;
+	fcoe->link_failures = (u16)hst->link_failure_count;
+
+	fcoe->fcoe_txq_depth_set = true;
+	fcoe->fcoe_rxq_depth_set = true;
+	fcoe->fcoe_rxq_depth = FCOE_PARAMS_NUM_TASKS;
+	fcoe->fcoe_txq_depth = FCOE_PARAMS_NUM_TASKS;
+
+	fcoe->fcoe_rx_frames_set = true;
+	fcoe->fcoe_rx_frames = hst->rx_frames;
+
+	fcoe->fcoe_tx_frames_set = true;
+	fcoe->fcoe_tx_frames = hst->tx_frames;
+
+	fcoe->fcoe_rx_bytes_set = true;
+	fcoe->fcoe_rx_bytes = hst->fcp_input_megabytes * 1000000;
+
+	fcoe->fcoe_tx_bytes_set = true;
+	fcoe->fcoe_tx_bytes = hst->fcp_output_megabytes * 1000000;
+
+	fcoe->crc_count_set = true;
+	fcoe->crc_count = hst->invalid_crc_count;
+
+	fcoe->tx_abts_set = true;
+	fcoe->tx_abts = hst->fcp_packet_aborts;
+
+	fcoe->tx_lun_rst_set = true;
+	fcoe->tx_lun_rst = qedf->lun_resets;
+
+	fcoe->abort_task_sets_set = true;
+	fcoe->abort_task_sets = qedf->packet_aborts;
+
+	fcoe->scsi_busy_set = true;
+	fcoe->scsi_busy = qedf->busy;
+
+	fcoe->scsi_tsk_full_set = true;
+	fcoe->scsi_tsk_full = qedf->task_set_fulls;
+}
+
 /*
  * Module Init/Remove
  */