v4.19.13 snapshot.
diff --git a/include/scsi/scsi_transport.h b/include/scsi/scsi_transport.h
new file mode 100644
index 0000000..a3dcb1b
--- /dev/null
+++ b/include/scsi/scsi_transport.h
@@ -0,0 +1,101 @@
+/*
+ * Transport specific attributes.
+ *
+ * Copyright (c) 2003 Silicon Graphics, Inc. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#ifndef SCSI_TRANSPORT_H
+#define SCSI_TRANSPORT_H
+
+#include <linux/transport_class.h>
+#include <linux/blkdev.h>
+#include <linux/bug.h>
+#include <scsi/scsi_host.h>
+#include <scsi/scsi_device.h>
+
+struct scsi_transport_template {
+ /* the attribute containers */
+ struct transport_container host_attrs;
+ struct transport_container target_attrs;
+ struct transport_container device_attrs;
+
+ /*
+ * If set, called from sysfs and legacy procfs rescanning code.
+ */
+ int (*user_scan)(struct Scsi_Host *, uint, uint, u64);
+
+ /* The size of the specific transport attribute structure (a
+ * space of this size will be left at the end of the
+ * scsi_* structure */
+ int device_size;
+ int device_private_offset;
+ int target_size;
+ int target_private_offset;
+ int host_size;
+ /* no private offset for the host; there's an alternative mechanism */
+
+ /*
+ * True if the transport wants to use a host-based work-queue
+ */
+ unsigned int create_work_queue : 1;
+
+ /*
+ * Allows a transport to override the default error handler.
+ */
+ void (* eh_strategy_handler)(struct Scsi_Host *);
+};
+
+#define transport_class_to_shost(tc) \
+ dev_to_shost((tc)->parent)
+
+
+/* Private area maintenance. The driver requested allocations come
+ * directly after the transport class allocations (if any). The idea
+ * is that you *must* call these only once. The code assumes that the
+ * initial values are the ones the transport specific code requires */
+static inline void
+scsi_transport_reserve_target(struct scsi_transport_template * t, int space)
+{
+ BUG_ON(t->target_private_offset != 0);
+ t->target_private_offset = ALIGN(t->target_size, sizeof(void *));
+ t->target_size = t->target_private_offset + space;
+}
+static inline void
+scsi_transport_reserve_device(struct scsi_transport_template * t, int space)
+{
+ BUG_ON(t->device_private_offset != 0);
+ t->device_private_offset = ALIGN(t->device_size, sizeof(void *));
+ t->device_size = t->device_private_offset + space;
+}
+static inline void *
+scsi_transport_target_data(struct scsi_target *starget)
+{
+ struct Scsi_Host *shost = dev_to_shost(&starget->dev);
+ return (u8 *)starget->starget_data
+ + shost->transportt->target_private_offset;
+
+}
+static inline void *
+scsi_transport_device_data(struct scsi_device *sdev)
+{
+ struct Scsi_Host *shost = sdev->host;
+ return (u8 *)sdev->sdev_data
+ + shost->transportt->device_private_offset;
+}
+
+void __scsi_init_queue(struct Scsi_Host *shost, struct request_queue *q);
+
+#endif /* SCSI_TRANSPORT_H */