[SCSI] libiscsi: Added new boot entries in the session sysfs

This is the kernel part of the modification to extract the net params
from the ibft sysfs to the iface struct used for the connection
request upon sync_session in the open-iscsi util.

Three new session sysfs params are defined:
boot_root - holds the name of the /sys/firmware/ibft or iscsi_rootN
boot_nic  - holds the ethernetN name
boot_target - holds the targetN name

Signed-off-by: Eddie Wai <eddie.wai@broadcom.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

1 files changed, 18 insertions, 0 deletions

diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c
index 5de946984500..ae69dfcc7834 100644
--- a/drivers/scsi/libiscsi.c
+++ b/drivers/scsi/libiscsi.c
@@ -2808,6 +2808,9 @@ void iscsi_session_teardown(struct iscsi_cls_session *cls_session)
         kfree(session->targetname);
         kfree(session->targetalias);
         kfree(session->initiatorname);
+        kfree(session->boot_root);
+        kfree(session->boot_nic);
+        kfree(session->boot_target);
         kfree(session->ifacename);
 
         iscsi_destroy_session(cls_session);
@@ -3248,6 +3251,12 @@ int iscsi_set_param(struct iscsi_cls_conn *cls_conn,
                 return iscsi_switch_str_param(&session->ifacename, buf);
         case ISCSI_PARAM_INITIATOR_NAME:
                 return iscsi_switch_str_param(&session->initiatorname, buf);
+        case ISCSI_PARAM_BOOT_ROOT:
+                return iscsi_switch_str_param(&session->boot_root, buf);
+        case ISCSI_PARAM_BOOT_NIC:
+                return iscsi_switch_str_param(&session->boot_nic, buf);
+        case ISCSI_PARAM_BOOT_TARGET:
+                return iscsi_switch_str_param(&session->boot_target, buf);
         default:
                 return -ENOSYS;
         }
@@ -3326,6 +3335,15 @@ int iscsi_session_get_param(struct iscsi_cls_session *cls_session,
         case ISCSI_PARAM_INITIATOR_NAME:
                 len = sprintf(buf, "%s\n", session->initiatorname);
                 break;
+        case ISCSI_PARAM_BOOT_ROOT:
+                len = sprintf(buf, "%s\n", session->boot_root);
+                break;
+        case ISCSI_PARAM_BOOT_NIC:
+                len = sprintf(buf, "%s\n", session->boot_nic);
+                break;
+        case ISCSI_PARAM_BOOT_TARGET:
+                len = sprintf(buf, "%s\n", session->boot_target);
+                break;
         default:
                 return -ENOSYS;
         }