[SCSI] lpfc 8.3.8: Add code to display logical link speed

Display Logical Link Speed when supported and is non-zero.
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

drivers/scsi/lpfc/lpfc_hw4.h

@@ -1959,6 +1959,9 @@ struct lpfc_acqe_link {
 #define LPFC_ASYNC_LINK_FAULT_NONE	0x0
 #define LPFC_ASYNC_LINK_FAULT_LOCAL	0x1
 #define LPFC_ASYNC_LINK_FAULT_REMOTE	0x2
+#define lpfc_acqe_qos_link_speed_SHIFT	16
+#define lpfc_acqe_qos_link_speed_MASK	0x0000FFFF
+#define lpfc_acqe_qos_link_speed_WORD	word1
 	uint32_t event_tag;
 	uint32_t trailer;
 };

drivers/scsi/lpfc/lpfc_init.c

@@ -2981,6 +2981,8 @@ lpfc_sli4_async_link_evt(struct lpfc_hba *phba,
 				bf_get(lpfc_acqe_link_physical, acqe_link);
 	phba->sli4_hba.link_state.fault =
 				bf_get(lpfc_acqe_link_fault, acqe_link);
+	phba->sli4_hba.link_state.logical_speed =
+				bf_get(lpfc_acqe_qos_link_speed, acqe_link);
 
 	/* Invoke the lpfc_handle_latt mailbox command callback function */
 	lpfc_mbx_cmpl_read_la(phba, pmb);

drivers/scsi/lpfc/lpfc_scsi.c

@@ -2701,6 +2701,13 @@ lpfc_info(struct Scsi_Host *host)
 				 " port %s",
 				 phba->Port);
 		}
+		len = strlen(lpfcinfobuf);
+		if (phba->sli4_hba.link_state.logical_speed) {
+			snprintf(lpfcinfobuf + len,
+				 384-len,
+				 " Logical Link Speed: %d Mbps",
+				 phba->sli4_hba.link_state.logical_speed * 10);
+		}
 	}
 	return lpfcinfobuf;
 }

drivers/scsi/lpfc/lpfc_sli4.h

@@ -126,6 +126,7 @@ struct lpfc_sli4_link {
 	uint8_t status;
 	uint8_t physical;
 	uint8_t fault;
+	uint16_t logical_speed;
 };
 
 struct lpfc_fcf {