[SCSI] scsi_transport_iscsi: export iscsi class session's target_id in sysfs.

Signed-off-by: Manish Rangankar <manish.rangankar@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c
index 31969f2e13ce..dac7f8d14494 100644
--- a/drivers/scsi/scsi_transport_iscsi.c
+++ b/drivers/scsi/scsi_transport_iscsi.c
@@ -2503,6 +2503,15 @@ show_priv_session_creator(struct device *dev, struct device_attribute *attr,
 }
 static ISCSI_CLASS_ATTR(priv_sess, creator, S_IRUGO, show_priv_session_creator,
                         NULL);
+static ssize_t
+show_priv_session_target_id(struct device *dev, struct device_attribute *attr,
+                            char *buf)
+{
+        struct iscsi_cls_session *session = iscsi_dev_to_session(dev->parent);
+        return sprintf(buf, "%d\n", session->target_id);
+}
+static ISCSI_CLASS_ATTR(priv_sess, target_id, S_IRUGO,
+                        show_priv_session_target_id, NULL);
 
 #define iscsi_priv_session_attr_show(field, format)                     \
 static ssize_t                                                          \
@@ -2575,6 +2584,7 @@ static struct attribute *iscsi_session_attrs[] = {
         &dev_attr_priv_sess_creator.attr,
         &dev_attr_sess_chap_out_idx.attr,
         &dev_attr_sess_chap_in_idx.attr,
+        &dev_attr_priv_sess_target_id.attr,
         NULL,
 };
 
@@ -2638,6 +2648,8 @@ static umode_t iscsi_session_attr_is_visible(struct kobject *kobj,
                 return S_IRUGO;
         else if (attr == &dev_attr_priv_sess_creator.attr)
                 return S_IRUGO;
+        else if (attr == &dev_attr_priv_sess_target_id.attr)
+                return S_IRUGO;
         else {
                 WARN_ONCE(1, "Invalid session attr");
                 return 0;