[SCSI] libiscsi: Add local_ipaddr parameter in iscsi_conn struct

Add local_ipaddr param and support get/set operations on it.

Signed-off-by: Adheer Chandravanshi <adheer.chandravanshi@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

2 files changed, 7 insertions, 0 deletions

diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c
index e3995612ea76..40462415291e 100644
--- a/drivers/scsi/libiscsi.c
+++ b/drivers/scsi/libiscsi.c
@@ -2945,6 +2945,7 @@ void iscsi_conn_teardown(struct iscsi_cls_conn *cls_conn)
         free_pages((unsigned long) conn->data,
                    get_order(ISCSI_DEF_MAX_RECV_SEG_LEN));
         kfree(conn->persistent_address);
+        kfree(conn->local_ipaddr);
         kfifo_in(&session->cmdpool.queue, (void*)&conn->login_task,
                     sizeof(void*));
         if (session->leadconn == conn)
@@ -3269,6 +3270,8 @@ int iscsi_set_param(struct iscsi_cls_conn *cls_conn,
                 sscanf(buf, "%d", &val);
                 session->discovery_sess = !!val;
                 break;
+        case ISCSI_PARAM_LOCAL_IPADDR:
+                return iscsi_switch_str_param(&conn->local_ipaddr, buf);
         default:
                 return -ENOSYS;
         }
@@ -3542,6 +3545,9 @@ int iscsi_conn_get_param(struct iscsi_cls_conn *cls_conn,
         case ISCSI_PARAM_TCP_RECV_WSF:
                 len = sprintf(buf, "%u\n", conn->tcp_recv_wsf);
                 break;
+        case ISCSI_PARAM_LOCAL_IPADDR:
+                len = sprintf(buf, "%s\n", conn->local_ipaddr);
+                break;
         default:
                 return -ENOSYS;
         }
diff --git a/include/scsi/libiscsi.h b/include/scsi/libiscsi.h
index 6ac9e17acdc4..309f51336fb9 100644
--- a/include/scsi/libiscsi.h
+++ b/include/scsi/libiscsi.h
@@ -231,6 +231,7 @@ struct iscsi_conn {
         uint8_t                 ipv6_traffic_class;
         uint8_t                 ipv6_flow_label;
         uint8_t                 is_fw_assigned_ipv6;
+        char                    *local_ipaddr;
 
         /* MIB-statistics */
         uint64_t                txdata_octets;