kabi: reserve space for scsi related structure

hulk inclusion
category: feature
bugzilla: 13276
CVE: NA

-------------------------------

Reserve space for the structure in scsi.
Signed-off-by: NTan Xiaojun <tanxiaojun@huawei.com>
Reviewed-by: NXie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>

drivers/scsi/sd.h

@@ -2,6 +2,8 @@
 #ifndef _SCSI_DISK_H
 #define _SCSI_DISK_H
 
+#include <linux/kabi.h>
+
 /*
  * More than enough for everybody ;)  The huge number of majors
  * is a leftover from 16bit dev_t days, we don't really need that
@@ -117,6 +119,9 @@ struct scsi_disk {
 	unsigned	urswrz : 1;
 	unsigned	security : 1;
 	unsigned	ignore_medium_access_errors : 1;
+
+	KABI_RESERVE(1)
+	KABI_RESERVE(2)
 };
 #define to_scsi_disk(obj) container_of(obj,struct scsi_disk,dev)
 

include/scsi/scsi_cmnd.h

@@ -2,6 +2,7 @@
 #ifndef _SCSI_SCSI_CMND_H
 #define _SCSI_SCSI_CMND_H
 
+#include <linux/kabi.h>
 #include <linux/dma-mapping.h>
 #include <linux/blkdev.h>
 #include <linux/t10-pi.h>
@@ -147,6 +148,11 @@ struct scsi_cmnd {
 	int flags;		/* Command flags */
 
 	unsigned char tag;	/* SCSI-II queued command tag */
+
+	KABI_RESERVE(1)
+	KABI_RESERVE(2)
+	KABI_RESERVE(3)
+	KABI_RESERVE(4)
 };
 
 /*

include/scsi/scsi_device.h

@@ -2,6 +2,7 @@
 #ifndef _SCSI_SCSI_DEVICE_H
 #define _SCSI_SCSI_DEVICE_H
 
+#include <linux/kabi.h>
 #include <linux/list.h>
 #include <linux/spinlock.h>
 #include <linux/workqueue.h>
@@ -227,6 +228,13 @@ struct scsi_device {
 	struct mutex		state_mutex;
 	enum scsi_device_state sdev_state;
 	struct task_struct	*quiesced_by;
+
+	KABI_RESERVE(1)
+	KABI_RESERVE(2)
+	KABI_RESERVE(3)
+	KABI_RESERVE(4)
+	KABI_RESERVE(5)
+	KABI_RESERVE(6)
 	unsigned long		sdev_data[0];
 } __attribute__((aligned(sizeof(unsigned long))));
 
@@ -311,6 +319,11 @@ struct scsi_target {
 	char			scsi_level;
 	enum scsi_target_state	state;
 	void 			*hostdata; /* available to low-level driver */
+
+	KABI_RESERVE(1)
+	KABI_RESERVE(2)
+	KABI_RESERVE(3)
+	KABI_RESERVE(4)
 	unsigned long		starget_data[0]; /* for the transport */
 	/* starget_data must be the last element!!!! */
 } __attribute__((aligned(sizeof(unsigned long))));

include/scsi/scsi_host.h

@@ -2,6 +2,7 @@
 #ifndef _SCSI_SCSI_HOST_H
 #define _SCSI_SCSI_HOST_H
 
+#include <linux/kabi.h>
 #include <linux/device.h>
 #include <linux/list.h>
 #include <linux/types.h>
@@ -486,6 +487,11 @@ struct scsi_host_template {
 	 */
 	unsigned int cmd_size;
 	struct scsi_host_cmd_pool *cmd_pool;
+
+	KABI_RESERVE(1)
+	KABI_RESERVE(2)
+	KABI_RESERVE(3)
+	KABI_RESERVE(4)
 };
 
 /*
@@ -704,6 +710,13 @@ struct Scsi_Host {
 	 */
 	struct device *dma_dev;
 
+	KABI_RESERVE(1)
+	KABI_RESERVE(2)
+	KABI_RESERVE(3)
+	KABI_RESERVE(4)
+	KABI_RESERVE(5)
+	KABI_RESERVE(6)
+
 	/*
 	 * We should ensure that this is aligned, both for better performance
 	 * and also because some compilers (m68k) don't automatically force