scsi: qedf: Add fka_period SCSI host attribute to show fip keep alive period.

Expose this information for interested applications.

Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/qedf/qedf_attr.c b/drivers/scsi/qedf/qedf_attr.c
index 1349f8a..fa67276 100644 (file)
--- a/drivers/scsi/qedf/qedf_attr.c
+++ b/drivers/scsi/qedf/qedf_attr.c
@@ -8,6 +8,25 @@
  */
 #include "qedf.h"
 
+inline bool qedf_is_vport(struct qedf_ctx *qedf)
+{
+       return qedf->lport->vport != NULL;
+}
+
+/* Get base qedf for physical port from vport */
+static struct qedf_ctx *qedf_get_base_qedf(struct qedf_ctx *qedf)
+{
+       struct fc_lport *lport;
+       struct fc_lport *base_lport;
+
+       if (!(qedf_is_vport(qedf)))
+               return NULL;
+
+       lport = qedf->lport;
+       base_lport = shost_priv(vport_to_shost(lport->vport));
+       return lport_priv(base_lport);
+}
+
 static ssize_t
 qedf_fcoe_mac_show(struct device *dev,
        struct device_attribute *attr, char *buf)
@@ -26,34 +45,34 @@ qedf_fcoe_mac_show(struct device *dev,
        return scnprintf(buf, PAGE_SIZE, "%pM\n", fcoe_mac);
 }
 
+static ssize_t
+qedf_fka_period_show(struct device *dev,
+       struct device_attribute *attr, char *buf)
+{
+       struct fc_lport *lport = shost_priv(class_to_shost(dev));
+       struct qedf_ctx *qedf = lport_priv(lport);
+       int fka_period = -1;
+
+       if (qedf_is_vport(qedf))
+               qedf = qedf_get_base_qedf(qedf);
+
+       if (qedf->ctlr.sel_fcf)
+               fka_period = qedf->ctlr.sel_fcf->fka_period;
+
+       return scnprintf(buf, PAGE_SIZE, "%d\n", fka_period);
+}
+
 static DEVICE_ATTR(fcoe_mac, S_IRUGO, qedf_fcoe_mac_show, NULL);
+static DEVICE_ATTR(fka_period, S_IRUGO, qedf_fka_period_show, NULL);
 
 struct device_attribute *qedf_host_attrs[] = {
        &dev_attr_fcoe_mac,
+       &dev_attr_fka_period,
        NULL,
 };
 
 extern const struct qed_fcoe_ops *qed_ops;
 
-inline bool qedf_is_vport(struct qedf_ctx *qedf)
-{
-       return (!(qedf->lport->vport == NULL));
-}
-
-/* Get base qedf for physical port from vport */
-static struct qedf_ctx *qedf_get_base_qedf(struct qedf_ctx *qedf)
-{
-       struct fc_lport *lport;
-       struct fc_lport *base_lport;
-
-       if (!(qedf_is_vport(qedf)))
-               return NULL;
-
-       lport = qedf->lport;
-       base_lport = shost_priv(vport_to_shost(lport->vport));
-       return (struct qedf_ctx *)(lport_priv(base_lport));
-}
-
 void qedf_capture_grc_dump(struct qedf_ctx *qedf)
 {
        struct qedf_ctx *base_qedf;