summaryrefslogblamecommitdiffstats
path: root/drivers/target/target_core_stat.c
blob: f8c2d2cc34310041323d2614c3dfb09902a1f1db (plain) (tree)
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631

































                                                                                










                                    

                                       


                                        
                                 































































































































































































































































































































































                                                                                   

                                                                        








                                                                

                                                            


                               
 
                            



                                                                      









                                                                

                                                           




                               



                                                                     









                                                                

                                                              




                               



                                                                        















                                                                
                                                              






















































































































































































                                                                                 
                                                                                 
 
                                                                             
                                                               
                                                                                 
                                                                       
                                                                            

                                                             


                                                                                       

















































































































































































































































                                                                                
                                                                    





















                                                                                

                                                         




















































































































































































                                                                                
                                                            




















                                                                                
                                                                  





















                                                                                
                                        

                                                  
                                                          


































                                                                                  
                                                                             
 
                                                                         
                                                                 
                                                                             
                                                                         
                                                                              

                                                                           


                                                                                     







































                                                                         
                                                                  
















































                                                                            
                                                                                   




























































































































































































































































































































                                                                                 
                                                                  
















































                                                                            
                                                                                   
























                                                             
                                                                  















































                                                                       
                                                            
                                                                          




































                                                                                       
                                                                          
 
                                                                             
                                                                           
                                                                                 

                                                                                   

                                                                                      

                                              
/*******************************************************************************
 * Filename:  target_core_stat.c
 *
 * Copyright (c) 2011 Rising Tide Systems
 * Copyright (c) 2011 Linux-iSCSI.org
 *
 * Modern ConfigFS group context specific statistics based on original
 * target_core_mib.c code
 *
 * Copyright (c) 2006-2007 SBE, Inc.  All Rights Reserved.
 *
 * Nicholas A. Bellinger <nab@linux-iscsi.org>
 *
 * 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.
 *
 ******************************************************************************/

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/timer.h>
#include <linux/string.h>
#include <generated/utsrelease.h>
#include <linux/utsname.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/blkdev.h>
#include <linux/configfs.h>
#include <scsi/scsi.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>

#include <target/target_core_base.h>
#include <target/target_core_backend.h>
#include <target/target_core_fabric.h>
#include <target/target_core_configfs.h>
#include <target/configfs_macros.h>

#include "target_core_internal.h"

#ifndef INITIAL_JIFFIES
#define INITIAL_JIFFIES ((unsigned long)(unsigned int) (-300*HZ))
#endif

#define NONE		"None"
#define ISPRINT(a)   ((a >= ' ') && (a <= '~'))

#define SCSI_LU_INDEX			1
#define LU_COUNT			1

/*
 * SCSI Device Table
 */

CONFIGFS_EATTR_STRUCT(target_stat_scsi_dev, se_dev_stat_grps);
#define DEV_STAT_SCSI_DEV_ATTR(_name, _mode)				\
static struct target_stat_scsi_dev_attribute				\
			target_stat_scsi_dev_##_name =			\
	__CONFIGFS_EATTR(_name, _mode,					\
	target_stat_scsi_dev_show_attr_##_name,				\
	target_stat_scsi_dev_store_attr_##_name);

#define DEV_STAT_SCSI_DEV_ATTR_RO(_name)				\
static struct target_stat_scsi_dev_attribute				\
			target_stat_scsi_dev_##_name =			\
	__CONFIGFS_EATTR_RO(_name,					\
	target_stat_scsi_dev_show_attr_##_name);

static ssize_t target_stat_scsi_dev_show_attr_inst(
	struct se_dev_stat_grps *sgrps, char *page)
{
	struct se_subsystem_dev *se_subdev = container_of(sgrps,
			struct se_subsystem_dev, dev_stat_grps);
	struct se_hba *hba = se_subdev->se_dev_hba;
	struct se_device *dev = se_subdev->se_dev_ptr;

	if (!dev)
		return -ENODEV;

	return snprintf(page, PAGE_SIZE, "%u\n", hba->hba_index);
}
DEV_STAT_SCSI_DEV_ATTR_RO(inst);

static ssize_t target_stat_scsi_dev_show_attr_indx(
	struct se_dev_stat_grps *sgrps, char *page)
{
	struct se_subsystem_dev *se_subdev = container_of(sgrps,
			struct se_subsystem_dev, dev_stat_grps);
	struct se_device *dev = se_subdev->se_dev_ptr;

	if (!dev)
		return -ENODEV;

	return snprintf(page, PAGE_SIZE, "%u\n", dev->dev_index);
}
DEV_STAT_SCSI_DEV_ATTR_RO(indx);

static ssize_t target_stat_scsi_dev_show_attr_role(
	struct se_dev_stat_grps *sgrps, char *page)
{
	struct se_subsystem_dev *se_subdev = container_of(sgrps,
			struct se_subsystem_dev, dev_stat_grps);
	struct se_device *dev = se_subdev->se_dev_ptr;

	if (!dev)
		return -ENODEV;

	return snprintf(page, PAGE_SIZE, "Target\n");
}
DEV_STAT_SCSI_DEV_ATTR_RO(role);

static ssize_t target_stat_scsi_dev_show_attr_ports(
	struct se_dev_stat_grps *sgrps, char *page)
{
	struct se_subsystem_dev *se_subdev = container_of(sgrps,
			struct se_subsystem_dev, dev_stat_grps);
	struct se_device *dev = se_subdev->se_dev_ptr;

	if (!dev)
		return -ENODEV;

	return snprintf(page, PAGE_SIZE, "%u\n", dev->dev_port_count);
}
DEV_STAT_SCSI_DEV_ATTR_RO(ports);

CONFIGFS_EATTR_OPS(target_stat_scsi_dev, se_dev_stat_grps, scsi_dev_group);

static struct configfs_attribute *target_stat_scsi_dev_attrs[] = {
	&target_stat_scsi_dev_inst.attr,
	&target_stat_scsi_dev_indx.attr,
	&target_stat_scsi_dev_role.attr,
	&target_stat_scsi_dev_ports.attr,
	NULL,
};

static struct configfs_item_operations target_stat_scsi_dev_attrib_ops = {
	.show_attribute		= target_stat_scsi_dev_attr_show,
	.store_attribute	= target_stat_scsi_dev_attr_store,
};

static struct config_item_type target_stat_scsi_dev_cit = {
	.ct_item_ops		= &target_stat_scsi_dev_attrib_ops,
	.ct_attrs		= target_stat_scsi_dev_attrs,
	.ct_owner		= THIS_MODULE,
};

/*
 * SCSI Target Device Table
 */

CONFIGFS_EATTR_STRUCT(target_stat_scsi_tgt_dev, se_dev_stat_grps);
#define DEV_STAT_SCSI_TGT_DEV_ATTR(_name, _mode)			\
static struct target_stat_scsi_tgt_dev_attribute			\
			target_stat_scsi_tgt_dev_##_name =		\
	__CONFIGFS_EATTR(_name, _mode,					\
	target_stat_scsi_tgt_dev_show_attr_##_name,			\
	target_stat_scsi_tgt_dev_store_attr_##_name);

#define DEV_STAT_SCSI_TGT_DEV_ATTR_RO(_name)				\
static struct target_stat_scsi_tgt_dev_attribute			\
			target_stat_scsi_tgt_dev_##_name =		\
	__CONFIGFS_EATTR_RO(_name,					\
	target_stat_scsi_tgt_dev_show_attr_##_name);

static ssize_t target_stat_scsi_tgt_dev_show_attr_inst(
	struct se_dev_stat_grps *sgrps, char *page)
{
	struct se_subsystem_dev *se_subdev = container_of(sgrps,
			struct se_subsystem_dev, dev_stat_grps);
	struct se_hba *hba = se_subdev->se_dev_hba;
	struct se_device *dev = se_subdev->se_dev_ptr;

	if (!dev)
		return -ENODEV;

	return snprintf(page, PAGE_SIZE, "%u\n", hba->hba_index);
}
DEV_STAT_SCSI_TGT_DEV_ATTR_RO(inst);

static ssize_t target_stat_scsi_tgt_dev_show_attr_indx(
	struct se_dev_stat_grps *sgrps, char *page)
{
	struct se_subsystem_dev *se_subdev = container_of(sgrps,
			struct se_subsystem_dev, dev_stat_grps);
	struct se_device *dev = se_subdev->se_dev_ptr;

	if (!dev)
		return -ENODEV;

	return snprintf(page, PAGE_SIZE, "%u\n", dev->dev_index);
}
DEV_STAT_SCSI_TGT_DEV_ATTR_RO(indx);

static ssize_t target_stat_scsi_tgt_dev_show_attr_num_lus(
	struct se_dev_stat_grps *sgrps, char *page)
{
	struct se_subsystem_dev *se_subdev = container_of(sgrps,
			struct se_subsystem_dev, dev_stat_grps);
	struct se_device *dev = se_subdev->se_dev_ptr;

	if (!dev)
		return -ENODEV;

	return snprintf(page, PAGE_SIZE, "%u\n", LU_COUNT);
}
DEV_STAT_SCSI_TGT_DEV_ATTR_RO(num_lus);

static ssize_t target_stat_scsi_tgt_dev_show_attr_status(
	struct se_dev_stat_grps *sgrps, char *page)
{
	struct se_subsystem_dev *se_subdev = container_of(sgrps,
			struct se_subsystem_dev, dev_stat_grps);
	struct se_device *dev = se_subdev->se_dev_ptr;
	char status[16];

	if (!dev)
		return -ENODEV;

	switch (dev->dev_status) {
	case TRANSPORT_DEVICE_ACTIVATED:
		strcpy(status, "activated");
		break;
	case TRANSPORT_DEVICE_DEACTIVATED:
		strcpy(status, "deactivated");
		break;
	case TRANSPORT_DEVICE_SHUTDOWN:
		strcpy(status, "shutdown");
		break;
	case TRANSPORT_DEVICE_OFFLINE_ACTIVATED:
	case TRANSPORT_DEVICE_OFFLINE_DEACTIVATED:
		strcpy(status, "offline");
		break;
	default:
		sprintf(status, "unknown(%d)", dev->dev_status);
		break;
	}

	return snprintf(page, PAGE_SIZE, "%s\n", status);
}
DEV_STAT_SCSI_TGT_DEV_ATTR_RO(status);

static ssize_t target_stat_scsi_tgt_dev_show_attr_non_access_lus(
	struct se_dev_stat_grps *sgrps, char *page)
{
	struct se_subsystem_dev *se_subdev = container_of(sgrps,
			struct se_subsystem_dev, dev_stat_grps);
	struct se_device *dev = se_subdev->se_dev_ptr;
	int non_accessible_lus;

	if (!dev)
		return -ENODEV;

	switch (dev->dev_status) {
	case TRANSPORT_DEVICE_ACTIVATED:
		non_accessible_lus = 0;
		break;
	case TRANSPORT_DEVICE_DEACTIVATED:
	case TRANSPORT_DEVICE_SHUTDOWN:
	case TRANSPORT_DEVICE_OFFLINE_ACTIVATED:
	case TRANSPORT_DEVICE_OFFLINE_DEACTIVATED:
	default:
		non_accessible_lus = 1;
		break;
	}

	return snprintf(page, PAGE_SIZE, "%u\n", non_accessible_lus);
}
DEV_STAT_SCSI_TGT_DEV_ATTR_RO(non_access_lus);

static ssize_t target_stat_scsi_tgt_dev_show_attr_resets(
	struct se_dev_stat_grps *sgrps, char *page)
{
	struct se_subsystem_dev *se_subdev = container_of(sgrps,
			struct se_subsystem_dev, dev_stat_grps);
	struct se_device *dev = se_subdev->se_dev_ptr;

	if (!dev)
		return -ENODEV;

	return snprintf(page, PAGE_SIZE, "%u\n", dev->num_resets);
}
DEV_STAT_SCSI_TGT_DEV_ATTR_RO(resets);


CONFIGFS_EATTR_OPS(target_stat_scsi_tgt_dev, se_dev_stat_grps, scsi_tgt_dev_group);

static struct configfs_attribute *target_stat_scsi_tgt_dev_attrs[] = {
	&target_stat_scsi_tgt_dev_inst.attr,
	&target_stat_scsi_tgt_dev_indx.attr,
	&target_stat_scsi_tgt_dev_num_lus.attr,
	&target_stat_scsi_tgt_dev_status.attr,
	&target_stat_scsi_tgt_dev_non_access_lus.attr,
	&target_stat_scsi_tgt_dev_resets.attr,
	NULL,
};

static struct configfs_item_operations target_stat_scsi_tgt_dev_attrib_ops = {
	.show_attribute		= target_stat_scsi_tgt_dev_attr_show,
	.store_attribute	= target_stat_scsi_tgt_dev_attr_store,
};

static struct config_item_type target_stat_scsi_tgt_dev_cit = {
	.ct_item_ops		= &target_stat_scsi_tgt_dev_attrib_ops,
	.ct_attrs		= target_stat_scsi_tgt_dev_attrs,
	.ct_owner		= THIS_MODULE,
};

/*
 * SCSI Logical Unit Table
 */

CONFIGFS_EATTR_STRUCT(target_stat_scsi_lu, se_dev_stat_grps);
#define DEV_STAT_SCSI_LU_ATTR(_name, _mode)				\
static struct target_stat_scsi_lu_attribute target_stat_scsi_lu_##_name = \
	__CONFIGFS_EATTR(_name, _mode,					\
	target_stat_scsi_lu_show_attr_##_name,				\
	target_stat_scsi_lu_store_attr_##_name);

#define DEV_STAT_SCSI_LU_ATTR_RO(_name)					\
static struct target_stat_scsi_lu_attribute target_stat_scsi_lu_##_name = \
	__CONFIGFS_EATTR_RO(_name,					\
	target_stat_scsi_lu_show_attr_##_name);

static ssize_t target_stat_scsi_lu_show_attr_inst(
	struct se_dev_stat_grps *sgrps, char *page)
{
	struct se_subsystem_dev *se_subdev = container_of(sgrps,
			struct se_subsystem_dev, dev_stat_grps);
	struct se_hba *hba = se_subdev->se_dev_hba;
	struct se_device *dev = se_subdev->se_dev_ptr;

	if (!dev)
		return -ENODEV;

	return snprintf(page, PAGE_SIZE, "%u\n", hba->hba_index);
}
DEV_STAT_SCSI_LU_ATTR_RO(inst);

static ssize_t target_stat_scsi_lu_show_attr_dev(
	struct se_dev_stat_grps *sgrps, char *page)
{
	struct se_subsystem_dev *se_subdev = container_of(sgrps,
			struct se_subsystem_dev, dev_stat_grps);
	struct se_device *dev = se_subdev->se_dev_ptr;

	if (!dev)
		return -ENODEV;

	return snprintf(page, PAGE_SIZE, "%u\n", dev->dev_index);
}
DEV_STAT_SCSI_LU_ATTR_RO(dev);

static ssize_t target_stat_scsi_lu_show_attr_indx(
	struct se_dev_stat_grps *sgrps, char *page)
{
	struct se_subsystem_dev *se_subdev = container_of(sgrps,
			struct se_subsystem_dev, dev_stat_grps);
	struct se_device *dev = se_subdev->se_dev_ptr;

	if (!dev)
		return -ENODEV;

	return snprintf(page, PAGE_SIZE, "%u\n", SCSI_LU_INDEX);
}
DEV_STAT_SCSI_LU_ATTR_RO(indx);

static ssize_t target_stat_scsi_lu_show_attr_lun(
	struct se_dev_stat_grps *sgrps, char *page)
{
	struct se_subsystem_dev *se_subdev = container_of(sgrps,
			struct se_subsystem_dev, dev_stat_grps);
	struct se_device *dev = se_subdev->se_dev_ptr;

	if (!dev)
		return -ENODEV;
	/* FIXME: scsiLuDefaultLun */
	return snprintf(page, PAGE_SIZE, "%llu\n", (unsigned long long)0);
}
DEV_STAT_SCSI_LU_ATTR_RO(lun);

static ssize_t target_stat_scsi_lu_show_attr_lu_name(
	struct se_dev_stat_grps *sgrps, char *page)
{
	struct se_subsystem_dev *se_subdev = container_of(sgrps,
			struct se_subsystem_dev, dev_stat_grps);
	struct se_device *dev = se_subdev->se_dev_ptr;

	if (!dev)
		return -ENODEV;
	/* scsiLuWwnName */
	return snprintf(page, PAGE_SIZE, "%s\n",
			(strlen(dev->se_sub_dev->t10_wwn.unit_serial)) ?
			dev->se_sub_dev->t10_wwn.unit_serial : "None");
}
DEV_STAT_SCSI_LU_ATTR_RO(lu_name);

static ssize_t target_stat_scsi_lu_show_attr_vend(
	struct se_dev_stat_grps *sgrps, char *page)
{
	struct se_subsystem_dev *se_subdev = container_of(sgrps,
			struct se_subsystem_dev, dev_stat_grps);
	struct se_device *dev = se_subdev->se_dev_ptr;
	int i;
	char str[sizeof(dev->se_sub_dev->t10_wwn.vendor)+1];

	if (!dev)
		return -ENODEV;

	/* scsiLuVendorId */
	for (i = 0; i < sizeof(dev->se_sub_dev->t10_wwn.vendor); i++)
		str[i] = ISPRINT(dev->se_sub_dev->t10_wwn.vendor[i]) ?
			dev->se_sub_dev->t10_wwn.vendor[i] : ' ';
	str[i] = '\0';
	return snprintf(page, PAGE_SIZE, "%s\n", str);
}
DEV_STAT_SCSI_LU_ATTR_RO(vend);

static ssize_t target_stat_scsi_lu_show_attr_prod(
	struct se_dev_stat_grps *sgrps, char *page)
{
	struct se_subsystem_dev *se_subdev = container_of(sgrps,
			struct se_subsystem_dev, dev_stat_grps);
	struct se_device *dev = se_subdev->se_dev_ptr;
	int i;
	char str[sizeof(dev->se_sub_dev->t10_wwn.model)+1];

	if (!dev)
		return -ENODEV;

	/* scsiLuProductId */
	for (i = 0; i < sizeof(dev->se_sub_dev->t10_wwn.vendor); i++)
		str[i] = ISPRINT(dev->se_sub_dev->t10_wwn.model[i]) ?
			dev->se_sub_dev->t10_wwn.model[i] : ' ';
	str[i] = '\0';
	return snprintf(page, PAGE_SIZE, "%s\n", str);
}
DEV_STAT_SCSI_LU_ATTR_RO(prod);

static ssize_t target_stat_scsi_lu_show_attr_rev(
	struct se_dev_stat_grps *sgrps, char *page)
{
	struct se_subsystem_dev *se_subdev = container_of(sgrps,
			struct se_subsystem_dev, dev_stat_grps);
	struct se_device *dev = se_subdev->se_dev_ptr;
	int i;
	char str[sizeof(dev->se_sub_dev->t10_wwn.revision)+1];

	if (!dev)
		return -ENODEV;

	/* scsiLuRevisionId */
	for (i = 0; i < sizeof(dev->se_sub_dev->t10_wwn.revision); i++)
		str[i] = ISPRINT(dev->se_sub_dev->t10_wwn.revision[i]) ?
			dev->se_sub_dev->t10_wwn.revision[i] : ' ';
	str[i] = '\0';
	return snprintf(page, PAGE_SIZE, "%s\n", str);
}
DEV_STAT_SCSI_LU_ATTR_RO(rev);

static ssize_t target_stat_scsi_lu_show_attr_dev_type(
	struct se_dev_stat_grps *sgrps, char *page)
{
	struct se_subsystem_dev *se_subdev = container_of(sgrps,
			struct se_subsystem_dev, dev_stat_grps);
	struct se_device *dev = se_subdev->se_dev_ptr;

	if (!dev)
		return -ENODEV;

	/* scsiLuPeripheralType */
	return snprintf(page, PAGE_SIZE, "%u\n",
			dev->transport->get_device_type(dev));
}
DEV_STAT_SCSI_LU_ATTR_RO(dev_type);

static ssize_t target_stat_scsi_lu_show_attr_status(
	struct se_dev_stat_grps *sgrps, char *page)
{
	struct se_subsystem_dev *se_subdev = container_of(sgrps,
			struct se_subsystem_dev, dev_stat_grps);
	struct se_device *dev = se_subdev->se_dev_ptr;

	if (!dev)
		return -ENODEV;

	/* scsiLuStatus */
	return snprintf(page, PAGE_SIZE, "%s\n",
		(dev->dev_status == TRANSPORT_DEVICE_ACTIVATED) ?
		"available" : "notavailable");
}
DEV_STAT_SCSI_LU_ATTR_RO(status);

static ssize_t target_stat_scsi_lu_show_attr_state_bit(
	struct se_dev_stat_grps *sgrps, char *page)
{
	struct se_subsystem_dev *se_subdev = container_of(sgrps,
			struct se_subsystem_dev, dev_stat_grps);
	struct se_device *dev = se_subdev->se_dev_ptr;

	if (!dev)
		return -ENODEV;

	/* scsiLuState */
	return snprintf(page, PAGE_SIZE, "exposed\n");
}
DEV_STAT_SCSI_LU_ATTR_RO(state_bit);

static ssize_t target_stat_scsi_lu_show_attr_num_cmds(
	struct se_dev_stat_grps *sgrps, char *page)
{
	struct se_subsystem_dev *se_subdev = container_of(sgrps,
			struct se_subsystem_dev, dev_stat_grps);
	struct se_device *dev = se_subdev->se_dev_ptr;

	if (!dev)
		return -ENODEV;

	/* scsiLuNumCommands */
	return snprintf(page, PAGE_SIZE, "%llu\n",
			(unsigned long long)dev->num_cmds);
}
DEV_STAT_SCSI_LU_ATTR_RO(num_cmds);

static ssize_t target_stat_scsi_lu_show_attr_read_mbytes(
	struct se_dev_stat_grps *sgrps, char *page)
{
	struct se_subsystem_dev *se_subdev = container_of(sgrps,
			struct se_subsystem_dev, dev_stat_grps);
	struct se_device *dev = se_subdev->se_dev_ptr;

	if (!dev)
		return -ENODEV;

	/* scsiLuReadMegaBytes */
	return snprintf(page, PAGE_SIZE, "%u\n", (u32)(dev->read_bytes >> 20));
}
DEV_STAT_SCSI_LU_ATTR_RO(read_mbytes);

static ssize_t target_stat_scsi_lu_show_attr_write_mbytes(
	struct se_dev_stat_grps *sgrps, char *page)
{
	struct se_subsystem_dev *se_subdev = container_of(sgrps,
			struct se_subsystem_dev, dev_stat_grps);
	struct se_device *dev = se_subdev->se_dev_ptr;

	if (!dev)
		return -ENODEV;

	/* scsiLuWrittenMegaBytes */
	return snprintf(page, PAGE_SIZE, "%u\n", (u32)(dev->write_bytes >> 20));
}
DEV_STAT_SCSI_LU_ATTR_RO(write_mbytes);

static ssize_t target_stat_scsi_lu_show_attr_resets(
	struct se_dev_stat_grps *sgrps, char *page)
{
	struct se_subsystem_dev *se_subdev = container_of(sgrps,
			struct se_subsystem_dev, dev_stat_grps);
	struct se_device *dev = se_subdev->se_dev_ptr;

	if (!dev)
		return -ENODEV;

	/* scsiLuInResets */
	return snprintf(page, PAGE_SIZE, "%u\n", dev->num_resets);
}
DEV_STAT_SCSI_LU_ATTR_RO(resets);

static ssize_t target_stat_scsi_lu_show_attr_full_stat(
	struct se_dev_stat_grps *sgrps, char *page)
{
	struct se_subsystem_dev *se_subdev = container_of(sgrps,
			struct se_subsystem_dev, dev_stat_grps);
	struct se_device *dev = se_subdev->se_dev_ptr;

	if (!dev)
		return -ENODEV;

	/* FIXME: scsiLuOutTaskSetFullStatus */
	return snprintf(page, PAGE_SIZE, "%u\n", 0);
}
DEV_STAT_SCSI_LU_ATTR_RO(full_stat);

static ssize_t target_stat_scsi_lu_show_attr_hs_num_cmds(
	struct se_dev_stat_grps *sgrps, char *page)
{
	struct se_subsystem_dev *se_subdev = container_of(sgrps,
			struct se_subsystem_dev, dev_stat_grps);
	struct se_device *dev = se_subdev->se_dev_ptr;

	if (!dev)
		return -ENODEV;

	/* FIXME: scsiLuHSInCommands */
	return snprintf(page, PAGE_SIZE, "%u\n", 0);
}
DEV_STAT_SCSI_LU_ATTR_RO(hs_num_cmds);

static ssize_t target_stat_scsi_lu_show_attr_creation_time(
	struct se_dev_stat_grps *sgrps, char *page)
{
	struct se_subsystem_dev *se_subdev = container_of(sgrps,
			struct se_subsystem_dev, dev_stat_grps);
	struct se_device *dev = se_subdev->se_dev_ptr;

	if (!dev)
		return -ENODEV;

	/* scsiLuCreationTime */
	return snprintf(page, PAGE_SIZE, "%u\n", (u32)(((u32)dev->creation_time -
				INITIAL_JIFFIES) * 100 / HZ));
}
DEV_STAT_SCSI_LU_ATTR_RO(creation_time);

CONFIGFS_EATTR_OPS(target_stat_scsi_lu, se_dev_stat_grps, scsi_lu_group);

static struct configfs_attribute *target_stat_scsi_lu_attrs[] = {
	&target_stat_scsi_lu_inst.attr,
	&target_stat_scsi_lu_dev.attr,
	&target_stat_scsi_lu_indx.attr,
	&target_stat_scsi_lu_lun.attr,
	&target_stat_scsi_lu_lu_name.attr,
	&target_stat_scsi_lu_vend.attr,
	&target_stat_scsi_lu_prod.attr,
	&target_stat_scsi_lu_rev.attr,
	&target_stat_scsi_lu_dev_type.attr,
	&target_stat_scsi_lu_status.attr,
	&target_stat_scsi_lu_state_bit.attr,
	&target_stat_scsi_lu_num_cmds.attr,
	&target_stat_scsi_lu_read_mbytes.attr,
	&target_stat_scsi_lu_write_mbytes.attr,
	&target_stat_scsi_lu_resets.attr,
	&target_stat_scsi_lu_full_stat.attr,
	&target_stat_scsi_lu_hs_num_cmds.attr,
	&target_stat_scsi_lu_creation_time.attr,
	NULL,
};

static struct configfs_item_operations target_stat_scsi_lu_attrib_ops = {
	.show_attribute		= target_stat_scsi_lu_attr_show,
	.store_attribute	= target_stat_scsi_lu_attr_store,
};

static struct config_item_type target_stat_scsi_lu_cit = {
	.ct_item_ops		= &target_stat_scsi_lu_attrib_ops,
	.ct_attrs		= target_stat_scsi_lu_attrs,
	.ct_owner		= THIS_MODULE,
};

/*
 * Called from target_core_configfs.c:target_core_make_subdev() to setup
 * the target statistics groups + configfs CITs located in target_core_stat.c
 */
void target_stat_setup_dev_default_groups(struct se_subsystem_dev *se_subdev)
{
	struct config_group *dev_stat_grp = &se_subdev->dev_stat_grps.stat_group;

	config_group_init_type_name(&se_subdev->dev_stat_grps.scsi_dev_group,
			"scsi_dev", &target_stat_scsi_dev_cit);
	config_group_init_type_name(&se_subdev->dev_stat_grps.scsi_tgt_dev_group,
			"scsi_tgt_dev", &target_stat_scsi_tgt_dev_cit);
	config_group_init_type_name(&se_subdev->dev_stat_grps.scsi_lu_group,
			"scsi_lu", &target_stat_scsi_lu_cit);

	dev_stat_grp->default_groups[0] = &se_subdev->dev_stat_grps.scsi_dev_group;
	dev_stat_grp->default_groups[1] = &se_subdev->dev_stat_grps.scsi_tgt_dev_group;
	dev_stat_grp->default_groups[2] = &se_subdev->dev_stat_grps.scsi_lu_group;
	dev_stat_grp->default_groups[3] = NULL;
}

/*
 * SCSI Port Table
 */

CONFIGFS_EATTR_STRUCT(target_stat_scsi_port, se_port_stat_grps);
#define DEV_STAT_SCSI_PORT_ATTR(_name, _mode)				\
static struct target_stat_scsi_port_attribute				\
			target_stat_scsi_port_##_name =			\
	__CONFIGFS_EATTR(_name, _mode,					\
	target_stat_scsi_port_show_attr_##_name,			\
	target_stat_scsi_port_store_attr_##_name);

#define DEV_STAT_SCSI_PORT_ATTR_RO(_name)				\
static struct target_stat_scsi_port_attribute				\
			target_stat_scsi_port_##_name =			\
	__CONFIGFS_EATTR_RO(_name,					\
	target_stat_scsi_port_show_attr_##_name);

static ssize_t target_stat_scsi_port_show_attr_inst(
	struct se_port_stat_grps *pgrps, char *page)
{
	struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
	struct se_port *sep;
	struct se_device *dev = lun->lun_se_dev;
	struct se_hba *hba;
	ssize_t ret;

	spin_lock(&lun->lun_sep_lock);
	sep = lun->lun_sep;
	if (!sep) {
		spin_unlock(&lun->lun_sep_lock);
		return -ENODEV;
	}
	hba = dev->se_hba;
	ret = snprintf(page, PAGE_SIZE, "%u\n", hba->hba_index);
	spin_unlock(&lun->lun_sep_lock);
	return ret;
}
DEV_STAT_SCSI_PORT_ATTR_RO(inst);

static ssize_t target_stat_scsi_port_show_attr_dev(
	struct se_port_stat_grps *pgrps, char *page)
{
	struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
	struct se_port *sep;
	struct se_device *dev = lun->lun_se_dev;
	ssize_t ret;

	spin_lock(&lun->lun_sep_lock);
	sep = lun->lun_sep;
	if (!sep) {
		spin_unlock(&lun->lun_sep_lock);
		return -ENODEV;
	}
	ret = snprintf(page, PAGE_SIZE, "%u\n", dev->dev_index);
	spin_unlock(&lun->lun_sep_lock);
	return ret;
}
DEV_STAT_SCSI_PORT_ATTR_RO(dev);

static ssize_t target_stat_scsi_port_show_attr_indx(
	struct se_port_stat_grps *pgrps, char *page)
{
	struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
	struct se_port *sep;
	ssize_t ret;

	spin_lock(&lun->lun_sep_lock);
	sep = lun->lun_sep;
	if (!sep) {
		spin_unlock(&lun->lun_sep_lock);
		return -ENODEV;
	}
	ret = snprintf(page, PAGE_SIZE, "%u\n", sep->sep_index);
	spin_unlock(&lun->lun_sep_lock);
	return ret;
}
DEV_STAT_SCSI_PORT_ATTR_RO(indx);

static ssize_t target_stat_scsi_port_show_attr_role(
	struct se_port_stat_grps *pgrps, char *page)
{
	struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
	struct se_device *dev = lun->lun_se_dev;
	struct se_port *sep;
	ssize_t ret;

	if (!dev)
		return -ENODEV;

	spin_lock(&lun->lun_sep_lock);
	sep = lun->lun_sep;
	if (!sep) {
		spin_unlock(&lun->lun_sep_lock);
		return -ENODEV;
	}
	ret = snprintf(page, PAGE_SIZE, "%s%u\n", "Device", dev->dev_index);
	spin_unlock(&lun->lun_sep_lock);
	return ret;
}
DEV_STAT_SCSI_PORT_ATTR_RO(role);

static ssize_t target_stat_scsi_port_show_attr_busy_count(
	struct se_port_stat_grps *pgrps, char *page)
{
	struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
	struct se_port *sep;
	ssize_t ret;

	spin_lock(&lun->lun_sep_lock);
	sep = lun->lun_sep;
	if (!sep) {
		spin_unlock(&lun->lun_sep_lock);
		return -ENODEV;
	}
	/* FIXME: scsiPortBusyStatuses  */
	ret = snprintf(page, PAGE_SIZE, "%u\n", 0);
	spin_unlock(&lun->lun_sep_lock);
	return ret;
}
DEV_STAT_SCSI_PORT_ATTR_RO(busy_count);

CONFIGFS_EATTR_OPS(target_stat_scsi_port, se_port_stat_grps, scsi_port_group);

static struct configfs_attribute *target_stat_scsi_port_attrs[] = {
	&target_stat_scsi_port_inst.attr,
	&target_stat_scsi_port_dev.attr,
	&target_stat_scsi_port_indx.attr,
	&target_stat_scsi_port_role.attr,
	&target_stat_scsi_port_busy_count.attr,
	NULL,
};

static struct configfs_item_operations target_stat_scsi_port_attrib_ops = {
	.show_attribute		= target_stat_scsi_port_attr_show,
	.store_attribute	= target_stat_scsi_port_attr_store,
};

static struct config_item_type target_stat_scsi_port_cit = {
	.ct_item_ops		= &target_stat_scsi_port_attrib_ops,
	.ct_attrs		= target_stat_scsi_port_attrs,
	.ct_owner		= THIS_MODULE,
};

/*
 * SCSI Target Port Table
 */
CONFIGFS_EATTR_STRUCT(target_stat_scsi_tgt_port, se_port_stat_grps);
#define DEV_STAT_SCSI_TGT_PORT_ATTR(_name, _mode)			\
static struct target_stat_scsi_tgt_port_attribute			\
			target_stat_scsi_tgt_port_##_name =		\
	__CONFIGFS_EATTR(_name, _mode,					\
	target_stat_scsi_tgt_port_show_attr_##_name,			\
	target_stat_scsi_tgt_port_store_attr_##_name);

#define DEV_STAT_SCSI_TGT_PORT_ATTR_RO(_name)				\
static struct target_stat_scsi_tgt_port_attribute			\
			target_stat_scsi_tgt_port_##_name =		\
	__CONFIGFS_EATTR_RO(_name,					\
	target_stat_scsi_tgt_port_show_attr_##_name);

static ssize_t target_stat_scsi_tgt_port_show_attr_inst(
	struct se_port_stat_grps *pgrps, char *page)
{
	struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
	struct se_device *dev = lun->lun_se_dev;
	struct se_port *sep;
	struct se_hba *hba;
	ssize_t ret;

	spin_lock(&lun->lun_sep_lock);
	sep = lun->lun_sep;
	if (!sep) {
		spin_unlock(&lun->lun_sep_lock);
		return -ENODEV;
	}
	hba = dev->se_hba;
	ret = snprintf(page, PAGE_SIZE, "%u\n", hba->hba_index);
	spin_unlock(&lun->lun_sep_lock);
	return ret;
}
DEV_STAT_SCSI_TGT_PORT_ATTR_RO(inst);

static ssize_t target_stat_scsi_tgt_port_show_attr_dev(
	struct se_port_stat_grps *pgrps, char *page)
{
	struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
	struct se_device *dev = lun->lun_se_dev;
	struct se_port *sep;
	ssize_t ret;

	spin_lock(&lun->lun_sep_lock);
	sep = lun->lun_sep;
	if (!sep) {
		spin_unlock(&lun->lun_sep_lock);
		return -ENODEV;
	}
	ret = snprintf(page, PAGE_SIZE, "%u\n", dev->dev_index);
	spin_unlock(&lun->lun_sep_lock);
	return ret;
}
DEV_STAT_SCSI_TGT_PORT_ATTR_RO(dev);

static ssize_t target_stat_scsi_tgt_port_show_attr_indx(
	struct se_port_stat_grps *pgrps, char *page)
{
	struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
	struct se_port *sep;
	ssize_t ret;

	spin_lock(&lun->lun_sep_lock);
	sep = lun->lun_sep;
	if (!sep) {
		spin_unlock(&lun->lun_sep_lock);
		return -ENODEV;
	}
	ret = snprintf(page, PAGE_SIZE, "%u\n", sep->sep_index);
	spin_unlock(&lun->lun_sep_lock);
	return ret;
}
DEV_STAT_SCSI_TGT_PORT_ATTR_RO(indx);

static ssize_t target_stat_scsi_tgt_port_show_attr_name(
	struct se_port_stat_grps *pgrps, char *page)
{
	struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
	struct se_port *sep;
	struct se_portal_group *tpg;
	ssize_t ret;

	spin_lock(&lun->lun_sep_lock);
	sep = lun->lun_sep;
	if (!sep) {
		spin_unlock(&lun->lun_sep_lock);
		return -ENODEV;
	}
	tpg = sep->sep_tpg;

	ret = snprintf(page, PAGE_SIZE, "%sPort#%u\n",
		tpg->se_tpg_tfo->get_fabric_name(), sep->sep_index);
	spin_unlock(&lun->lun_sep_lock);
	return ret;
}
DEV_STAT_SCSI_TGT_PORT_ATTR_RO(name);

static ssize_t target_stat_scsi_tgt_port_show_attr_port_index(
	struct se_port_stat_grps *pgrps, char *page)
{
	struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
	struct se_port *sep;
	struct se_portal_group *tpg;
	ssize_t ret;

	spin_lock(&lun->lun_sep_lock);
	sep = lun->lun_sep;
	if (!sep) {
		spin_unlock(&lun->lun_sep_lock);
		return -ENODEV;
	}
	tpg = sep->sep_tpg;

	ret = snprintf(page, PAGE_SIZE, "%s%s%d\n",
		tpg->se_tpg_tfo->tpg_get_wwn(tpg), "+t+",
		tpg->se_tpg_tfo->tpg_get_tag(tpg));
	spin_unlock(&lun->lun_sep_lock);
	return ret;
}
DEV_STAT_SCSI_TGT_PORT_ATTR_RO(port_index);

static ssize_t target_stat_scsi_tgt_port_show_attr_in_cmds(
	struct se_port_stat_grps *pgrps, char *page)
{
	struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
	struct se_port *sep;
	struct se_portal_group *tpg;
	ssize_t ret;

	spin_lock(&lun->lun_sep_lock);
	sep = lun->lun_sep;
	if (!sep) {
		spin_unlock(&lun->lun_sep_lock);
		return -ENODEV;
	}
	tpg = sep->sep_tpg;

	ret = snprintf(page, PAGE_SIZE, "%llu\n", sep->sep_stats.cmd_pdus);
	spin_unlock(&lun->lun_sep_lock);
	return ret;
}
DEV_STAT_SCSI_TGT_PORT_ATTR_RO(in_cmds);

static ssize_t target_stat_scsi_tgt_port_show_attr_write_mbytes(
	struct se_port_stat_grps *pgrps, char *page)
{
	struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
	struct se_port *sep;
	struct se_portal_group *tpg;
	ssize_t ret;

	spin_lock(&lun->lun_sep_lock);
	sep = lun->lun_sep;
	if (!sep) {
		spin_unlock(&lun->lun_sep_lock);
		return -ENODEV;
	}
	tpg = sep->sep_tpg;

	ret = snprintf(page, PAGE_SIZE, "%u\n",
			(u32)(sep->sep_stats.rx_data_octets >> 20));
	spin_unlock(&lun->lun_sep_lock);
	return ret;
}
DEV_STAT_SCSI_TGT_PORT_ATTR_RO(write_mbytes);

static ssize_t target_stat_scsi_tgt_port_show_attr_read_mbytes(
	struct se_port_stat_grps *pgrps, char *page)
{
	struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
	struct se_port *sep;
	struct se_portal_group *tpg;
	ssize_t ret;

	spin_lock(&lun->lun_sep_lock);
	sep = lun->lun_sep;
	if (!sep) {
		spin_unlock(&lun->lun_sep_lock);
		return -ENODEV;
	}
	tpg = sep->sep_tpg;

	ret = snprintf(page, PAGE_SIZE, "%u\n",
			(u32)(sep->sep_stats.tx_data_octets >> 20));
	spin_unlock(&lun->lun_sep_lock);
	return ret;
}
DEV_STAT_SCSI_TGT_PORT_ATTR_RO(read_mbytes);

static ssize_t target_stat_scsi_tgt_port_show_attr_hs_in_cmds(
	struct se_port_stat_grps *pgrps, char *page)
{
	struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
	struct se_port *sep;
	struct se_portal_group *tpg;
	ssize_t ret;

	spin_lock(&lun->lun_sep_lock);
	sep = lun->lun_sep;
	if (!sep) {
		spin_unlock(&lun->lun_sep_lock);
		return -ENODEV;
	}
	tpg = sep->sep_tpg;

	/* FIXME: scsiTgtPortHsInCommands */
	ret = snprintf(page, PAGE_SIZE, "%u\n", 0);
	spin_unlock(&lun->lun_sep_lock);
	return ret;
}
DEV_STAT_SCSI_TGT_PORT_ATTR_RO(hs_in_cmds);

CONFIGFS_EATTR_OPS(target_stat_scsi_tgt_port, se_port_stat_grps,
		scsi_tgt_port_group);

static struct configfs_attribute *target_stat_scsi_tgt_port_attrs[] = {
	&target_stat_scsi_tgt_port_inst.attr,
	&target_stat_scsi_tgt_port_dev.attr,
	&target_stat_scsi_tgt_port_indx.attr,
	&target_stat_scsi_tgt_port_name.attr,
	&target_stat_scsi_tgt_port_port_index.attr,
	&target_stat_scsi_tgt_port_in_cmds.attr,
	&target_stat_scsi_tgt_port_write_mbytes.attr,
	&target_stat_scsi_tgt_port_read_mbytes.attr,
	&target_stat_scsi_tgt_port_hs_in_cmds.attr,
	NULL,
};

static struct configfs_item_operations target_stat_scsi_tgt_port_attrib_ops = {
	.show_attribute		= target_stat_scsi_tgt_port_attr_show,
	.store_attribute	= target_stat_scsi_tgt_port_attr_store,
};

static struct config_item_type target_stat_scsi_tgt_port_cit = {
	.ct_item_ops		= &target_stat_scsi_tgt_port_attrib_ops,
	.ct_attrs		= target_stat_scsi_tgt_port_attrs,
	.ct_owner		= THIS_MODULE,
};

/*
 * SCSI Transport Table
o */

CONFIGFS_EATTR_STRUCT(target_stat_scsi_transport, se_port_stat_grps);
#define DEV_STAT_SCSI_TRANSPORT_ATTR(_name, _mode)			\
static struct target_stat_scsi_transport_attribute			\
			target_stat_scsi_transport_##_name =		\
	__CONFIGFS_EATTR(_name, _mode,					\
	target_stat_scsi_transport_show_attr_##_name,			\
	target_stat_scsi_transport_store_attr_##_name);

#define DEV_STAT_SCSI_TRANSPORT_ATTR_RO(_name)				\
static struct target_stat_scsi_transport_attribute			\
			target_stat_scsi_transport_##_name =		\
	__CONFIGFS_EATTR_RO(_name,					\
	target_stat_scsi_transport_show_attr_##_name);

static ssize_t target_stat_scsi_transport_show_attr_inst(
	struct se_port_stat_grps *pgrps, char *page)
{
	struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
	struct se_device *dev = lun->lun_se_dev;
	struct se_port *sep;
	struct se_hba *hba;
	ssize_t ret;

	spin_lock(&lun->lun_sep_lock);
	sep = lun->lun_sep;
	if (!sep) {
		spin_unlock(&lun->lun_sep_lock);
		return -ENODEV;
	}

	hba = dev->se_hba;
	ret = snprintf(page, PAGE_SIZE, "%u\n", hba->hba_index);
	spin_unlock(&lun->lun_sep_lock);
	return ret;
}
DEV_STAT_SCSI_TRANSPORT_ATTR_RO(inst);

static ssize_t target_stat_scsi_transport_show_attr_device(
	struct se_port_stat_grps *pgrps, char *page)
{
	struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
	struct se_port *sep;
	struct se_portal_group *tpg;
	ssize_t ret;

	spin_lock(&lun->lun_sep_lock);
	sep = lun->lun_sep;
	if (!sep) {
		spin_unlock(&lun->lun_sep_lock);
		return -ENODEV;
	}
	tpg = sep->sep_tpg;
	/* scsiTransportType */
	ret = snprintf(page, PAGE_SIZE, "scsiTransport%s\n",
			tpg->se_tpg_tfo->get_fabric_name());
	spin_unlock(&lun->lun_sep_lock);
	return ret;
}
DEV_STAT_SCSI_TRANSPORT_ATTR_RO(device);

static ssize_t target_stat_scsi_transport_show_attr_indx(
	struct se_port_stat_grps *pgrps, char *page)
{
	struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
	struct se_port *sep;
	struct se_portal_group *tpg;
	ssize_t ret;

	spin_lock(&lun->lun_sep_lock);
	sep = lun->lun_sep;
	if (!sep) {
		spin_unlock(&lun->lun_sep_lock);
		return -ENODEV;
	}
	tpg = sep->sep_tpg;
	ret = snprintf(page, PAGE_SIZE, "%u\n",
			tpg->se_tpg_tfo->tpg_get_inst_index(tpg));
	spin_unlock(&lun->lun_sep_lock);
	return ret;
}
DEV_STAT_SCSI_TRANSPORT_ATTR_RO(indx);

static ssize_t target_stat_scsi_transport_show_attr_dev_name(
	struct se_port_stat_grps *pgrps, char *page)
{
	struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
	struct se_device *dev = lun->lun_se_dev;
	struct se_port *sep;
	struct se_portal_group *tpg;
	struct t10_wwn *wwn;
	ssize_t ret;

	spin_lock(&lun->lun_sep_lock);
	sep = lun->lun_sep;
	if (!sep) {
		spin_unlock(&lun->lun_sep_lock);
		return -ENODEV;
	}
	tpg = sep->sep_tpg;
	wwn = &dev->se_sub_dev->t10_wwn;
	/* scsiTransportDevName */
	ret = snprintf(page, PAGE_SIZE, "%s+%s\n",
			tpg->se_tpg_tfo->tpg_get_wwn(tpg),
			(strlen(wwn->unit_serial)) ? wwn->unit_serial :
			wwn->vendor);
	spin_unlock(&lun->lun_sep_lock);
	return ret;
}
DEV_STAT_SCSI_TRANSPORT_ATTR_RO(dev_name);

CONFIGFS_EATTR_OPS(target_stat_scsi_transport, se_port_stat_grps,
		scsi_transport_group);

static struct configfs_attribute *target_stat_scsi_transport_attrs[] = {
	&target_stat_scsi_transport_inst.attr,
	&target_stat_scsi_transport_device.attr,
	&target_stat_scsi_transport_indx.attr,
	&target_stat_scsi_transport_dev_name.attr,
	NULL,
};

static struct configfs_item_operations target_stat_scsi_transport_attrib_ops = {
	.show_attribute		= target_stat_scsi_transport_attr_show,
	.store_attribute	= target_stat_scsi_transport_attr_store,
};

static struct config_item_type target_stat_scsi_transport_cit = {
	.ct_item_ops		= &target_stat_scsi_transport_attrib_ops,
	.ct_attrs		= target_stat_scsi_transport_attrs,
	.ct_owner		= THIS_MODULE,
};

/*
 * Called from target_core_fabric_configfs.c:target_fabric_make_lun() to setup
 * the target port statistics groups + configfs CITs located in target_core_stat.c
 */
void target_stat_setup_port_default_groups(struct se_lun *lun)
{
	struct config_group *port_stat_grp = &lun->port_stat_grps.stat_group;

	config_group_init_type_name(&lun->port_stat_grps.scsi_port_group,
			"scsi_port", &target_stat_scsi_port_cit);
	config_group_init_type_name(&lun->port_stat_grps.scsi_tgt_port_group,
			"scsi_tgt_port", &target_stat_scsi_tgt_port_cit);
	config_group_init_type_name(&lun->port_stat_grps.scsi_transport_group,
			"scsi_transport", &target_stat_scsi_transport_cit);

	port_stat_grp->default_groups[0] = &lun->port_stat_grps.scsi_port_group;
	port_stat_grp->default_groups[1] = &lun->port_stat_grps.scsi_tgt_port_group;
	port_stat_grp->default_groups[2] = &lun->port_stat_grps.scsi_transport_group;
	port_stat_grp->default_groups[3] = NULL;
}

/*
 * SCSI Authorized Initiator Table
 */

CONFIGFS_EATTR_STRUCT(target_stat_scsi_auth_intr, se_ml_stat_grps);
#define DEV_STAT_SCSI_AUTH_INTR_ATTR(_name, _mode)			\
static struct target_stat_scsi_auth_intr_attribute			\
			target_stat_scsi_auth_intr_##_name =		\
	__CONFIGFS_EATTR(_name, _mode,					\
	target_stat_scsi_auth_intr_show_attr_##_name,			\
	target_stat_scsi_auth_intr_store_attr_##_name);

#define DEV_STAT_SCSI_AUTH_INTR_ATTR_RO(_name)				\
static struct target_stat_scsi_auth_intr_attribute			\
			target_stat_scsi_auth_intr_##_name =		\
	__CONFIGFS_EATTR_RO(_name,					\
	target_stat_scsi_auth_intr_show_attr_##_name);

static ssize_t target_stat_scsi_auth_intr_show_attr_inst(
	struct se_ml_stat_grps *lgrps, char *page)
{
	struct se_lun_acl *lacl = container_of(lgrps,
			struct se_lun_acl, ml_stat_grps);
	struct se_node_acl *nacl = lacl->se_lun_nacl;
	struct se_dev_entry *deve;
	struct se_portal_group *tpg;
	ssize_t ret;

	spin_lock_irq(&nacl->device_list_lock);
	deve = &nacl->device_list[lacl->mapped_lun];
	if (!deve->se_lun || !deve->se_lun_acl) {
		spin_unlock_irq(&nacl->device_list_lock);
		return -ENODEV;
	}
	tpg = nacl->se_tpg;
	/* scsiInstIndex */
	ret = snprintf(page, PAGE_SIZE, "%u\n",
			tpg->se_tpg_tfo->tpg_get_inst_index(tpg));
	spin_unlock_irq(&nacl->device_list_lock);
	return ret;
}
DEV_STAT_SCSI_AUTH_INTR_ATTR_RO(inst);

static ssize_t target_stat_scsi_auth_intr_show_attr_dev(
	struct se_ml_stat_grps *lgrps, char *page)
{
	struct se_lun_acl *lacl = container_of(lgrps,
			struct se_lun_acl, ml_stat_grps);
	struct se_node_acl *nacl = lacl->se_lun_nacl;
	struct se_dev_entry *deve;
	struct se_lun *lun;
	struct se_portal_group *tpg;
	ssize_t ret;

	spin_lock_irq(&nacl->device_list_lock);
	deve = &nacl->device_list[lacl->mapped_lun];
	if (!deve->se_lun || !deve->se_lun_acl) {
		spin_unlock_irq(&nacl->device_list_lock);
		return -ENODEV;
	}
	tpg = nacl->se_tpg;
	lun = deve->se_lun;
	/* scsiDeviceIndex */
	ret = snprintf(page, PAGE_SIZE, "%u\n", lun->lun_se_dev->dev_index);
	spin_unlock_irq(&nacl->device_list_lock);
	return ret;
}
DEV_STAT_SCSI_AUTH_INTR_ATTR_RO(dev);

static ssize_t target_stat_scsi_auth_intr_show_attr_port(
	struct se_ml_stat_grps *lgrps, char *page)
{
	struct se_lun_acl *lacl = container_of(lgrps,
			struct se_lun_acl, ml_stat_grps);
	struct se_node_acl *nacl = lacl->se_lun_nacl;
	struct se_dev_entry *deve;
	struct se_portal_group *tpg;
	ssize_t ret;

	spin_lock_irq(&nacl->device_list_lock);
	deve = &nacl->device_list[lacl->mapped_lun];
	if (!deve->se_lun || !deve->se_lun_acl) {
		spin_unlock_irq(&nacl->device_list_lock);
		return -ENODEV;
	}
	tpg = nacl->se_tpg;
	/* scsiAuthIntrTgtPortIndex */
	ret = snprintf(page, PAGE_SIZE, "%u\n", tpg->se_tpg_tfo->tpg_get_tag(tpg));
	spin_unlock_irq(&nacl->device_list_lock);
	return ret;
}
DEV_STAT_SCSI_AUTH_INTR_ATTR_RO(port);

static ssize_t target_stat_scsi_auth_intr_show_attr_indx(
	struct se_ml_stat_grps *lgrps, char *page)
{
	struct se_lun_acl *lacl = container_of(lgrps,
			struct se_lun_acl, ml_stat_grps);
	struct se_node_acl *nacl = lacl->se_lun_nacl;
	struct se_dev_entry *deve;
	ssize_t ret;

	spin_lock_irq(&nacl->device_list_lock);
	deve = &nacl->device_list[lacl->mapped_lun];
	if (!deve->se_lun || !deve->se_lun_acl) {
		spin_unlock_irq(&nacl->device_list_lock);
		return -ENODEV;
	}
	/* scsiAuthIntrIndex */
	ret = snprintf(page, PAGE_SIZE, "%u\n", nacl->acl_index);
	spin_unlock_irq(&nacl->device_list_lock);
	return ret;
}
DEV_STAT_SCSI_AUTH_INTR_ATTR_RO(indx);

static ssize_t target_stat_scsi_auth_intr_show_attr_dev_or_port(
	struct se_ml_stat_grps *lgrps, char *page)
{
	struct se_lun_acl *lacl = container_of(lgrps,
			struct se_lun_acl, ml_stat_grps);
	struct se_node_acl *nacl = lacl->se_lun_nacl;
	struct se_dev_entry *deve;
	ssize_t ret;

	spin_lock_irq(&nacl->device_list_lock);
	deve = &nacl->device_list[lacl->mapped_lun];
	if (!deve->se_lun || !deve->se_lun_acl) {
		spin_unlock_irq(&nacl->device_list_lock);
		return -ENODEV;
	}
	/* scsiAuthIntrDevOrPort */
	ret = snprintf(page, PAGE_SIZE, "%u\n", 1);
	spin_unlock_irq(&nacl->device_list_lock);
	return ret;
}
DEV_STAT_SCSI_AUTH_INTR_ATTR_RO(dev_or_port);

static ssize_t target_stat_scsi_auth_intr_show_attr_intr_name(
	struct se_ml_stat_grps *lgrps, char *page)
{
	struct se_lun_acl *lacl = container_of(lgrps,
			struct se_lun_acl, ml_stat_grps);
	struct se_node_acl *nacl = lacl->se_lun_nacl;
	struct se_dev_entry *deve;
	ssize_t ret;

	spin_lock_irq(&nacl->device_list_lock);
	deve = &nacl->device_list[lacl->mapped_lun];
	if (!deve->se_lun || !deve->se_lun_acl) {
		spin_unlock_irq(&nacl->device_list_lock);
		return -ENODEV;
	}
	/* scsiAuthIntrName */
	ret = snprintf(page, PAGE_SIZE, "%s\n", nacl->initiatorname);
	spin_unlock_irq(&nacl->device_list_lock);
	return ret;
}
DEV_STAT_SCSI_AUTH_INTR_ATTR_RO(intr_name);

static ssize_t target_stat_scsi_auth_intr_show_attr_map_indx(
	struct se_ml_stat_grps *lgrps, char *page)
{
	struct se_lun_acl *lacl = container_of(lgrps,
			struct se_lun_acl, ml_stat_grps);
	struct se_node_acl *nacl = lacl->se_lun_nacl;
	struct se_dev_entry *deve;
	ssize_t ret;

	spin_lock_irq(&nacl->device_list_lock);
	deve = &nacl->device_list[lacl->mapped_lun];
	if (!deve->se_lun || !deve->se_lun_acl) {
		spin_unlock_irq(&nacl->device_list_lock);
		return -ENODEV;
	}
	/* FIXME: scsiAuthIntrLunMapIndex */
	ret = snprintf(page, PAGE_SIZE, "%u\n", 0);
	spin_unlock_irq(&nacl->device_list_lock);
	return ret;
}
DEV_STAT_SCSI_AUTH_INTR_ATTR_RO(map_indx);

static ssize_t target_stat_scsi_auth_intr_show_attr_att_count(
	struct se_ml_stat_grps *lgrps, char *page)
{
	struct se_lun_acl *lacl = container_of(lgrps,
			struct se_lun_acl, ml_stat_grps);
	struct se_node_acl *nacl = lacl->se_lun_nacl;
	struct se_dev_entry *deve;
	ssize_t ret;

	spin_lock_irq(&nacl->device_list_lock);
	deve = &nacl->device_list[lacl->mapped_lun];
	if (!deve->se_lun || !deve->se_lun_acl) {
		spin_unlock_irq(&nacl->device_list_lock);
		return -ENODEV;
	}
	/* scsiAuthIntrAttachedTimes */
	ret = snprintf(page, PAGE_SIZE, "%u\n", deve->attach_count);
	spin_unlock_irq(&nacl->device_list_lock);
	return ret;
}
DEV_STAT_SCSI_AUTH_INTR_ATTR_RO(att_count);

static ssize_t target_stat_scsi_auth_intr_show_attr_num_cmds(
	struct se_ml_stat_grps *lgrps, char *page)
{
	struct se_lun_acl *lacl = container_of(lgrps,
			struct se_lun_acl, ml_stat_grps);
	struct se_node_acl *nacl = lacl->se_lun_nacl;
	struct se_dev_entry *deve;
	ssize_t ret;

	spin_lock_irq(&nacl->device_list_lock);
	deve = &nacl->device_list[lacl->mapped_lun];
	if (!deve->se_lun || !deve->se_lun_acl) {
		spin_unlock_irq(&nacl->device_list_lock);
		return -ENODEV;
	}
	/* scsiAuthIntrOutCommands */
	ret = snprintf(page, PAGE_SIZE, "%u\n", deve->total_cmds);
	spin_unlock_irq(&nacl->device_list_lock);
	return ret;
}
DEV_STAT_SCSI_AUTH_INTR_ATTR_RO(num_cmds);

static ssize_t target_stat_scsi_auth_intr_show_attr_read_mbytes(
	struct se_ml_stat_grps *lgrps, char *page)
{
	struct se_lun_acl *lacl = container_of(lgrps,
			struct se_lun_acl, ml_stat_grps);
	struct se_node_acl *nacl = lacl->se_lun_nacl;
	struct se_dev_entry *deve;
	ssize_t ret;

	spin_lock_irq(&nacl->device_list_lock);
	deve = &nacl->device_list[lacl->mapped_lun];
	if (!deve->se_lun || !deve->se_lun_acl) {
		spin_unlock_irq(&nacl->device_list_lock);
		return -ENODEV;
	}
	/* scsiAuthIntrReadMegaBytes */
	ret = snprintf(page, PAGE_SIZE, "%u\n", (u32)(deve->read_bytes >> 20));
	spin_unlock_irq(&nacl->device_list_lock);
	return ret;
}
DEV_STAT_SCSI_AUTH_INTR_ATTR_RO(read_mbytes);

static ssize_t target_stat_scsi_auth_intr_show_attr_write_mbytes(
	struct se_ml_stat_grps *lgrps, char *page)
{
	struct se_lun_acl *lacl = container_of(lgrps,
			struct se_lun_acl, ml_stat_grps);
	struct se_node_acl *nacl = lacl->se_lun_nacl;
	struct se_dev_entry *deve;
	ssize_t ret;

	spin_lock_irq(&nacl->device_list_lock);
	deve = &nacl->device_list[lacl->mapped_lun];
	if (!deve->se_lun || !deve->se_lun_acl) {
		spin_unlock_irq(&nacl->device_list_lock);
		return -ENODEV;
	}
	/* scsiAuthIntrWrittenMegaBytes */
	ret = snprintf(page, PAGE_SIZE, "%u\n", (u32)(deve->write_bytes >> 20));
	spin_unlock_irq(&nacl->device_list_lock);
	return ret;
}
DEV_STAT_SCSI_AUTH_INTR_ATTR_RO(write_mbytes);

static ssize_t target_stat_scsi_auth_intr_show_attr_hs_num_cmds(
	struct se_ml_stat_grps *lgrps, char *page)
{
	struct se_lun_acl *lacl = container_of(lgrps,
			struct se_lun_acl, ml_stat_grps);
	struct se_node_acl *nacl = lacl->se_lun_nacl;
	struct se_dev_entry *deve;
	ssize_t ret;

	spin_lock_irq(&nacl->device_list_lock);
	deve = &nacl->device_list[lacl->mapped_lun];
	if (!deve->se_lun || !deve->se_lun_acl) {
		spin_unlock_irq(&nacl->device_list_lock);
		return -ENODEV;
	}
	/* FIXME: scsiAuthIntrHSOutCommands */
	ret = snprintf(page, PAGE_SIZE, "%u\n", 0);
	spin_unlock_irq(&nacl->device_list_lock);
	return ret;
}
DEV_STAT_SCSI_AUTH_INTR_ATTR_RO(hs_num_cmds);

static ssize_t target_stat_scsi_auth_intr_show_attr_creation_time(
	struct se_ml_stat_grps *lgrps, char *page)
{
	struct se_lun_acl *lacl = container_of(lgrps,
			struct se_lun_acl, ml_stat_grps);
	struct se_node_acl *nacl = lacl->se_lun_nacl;
	struct se_dev_entry *deve;
	ssize_t ret;

	spin_lock_irq(&nacl->device_list_lock);
	deve = &nacl->device_list[lacl->mapped_lun];
	if (!deve->se_lun || !deve->se_lun_acl) {
		spin_unlock_irq(&nacl->device_list_lock);
		return -ENODEV;
	}
	/* scsiAuthIntrLastCreation */
	ret = snprintf(page, PAGE_SIZE, "%u\n", (u32)(((u32)deve->creation_time -
				INITIAL_JIFFIES) * 100 / HZ));
	spin_unlock_irq(&nacl->device_list_lock);
	return ret;
}
DEV_STAT_SCSI_AUTH_INTR_ATTR_RO(creation_time);

static ssize_t target_stat_scsi_auth_intr_show_attr_row_status(
	struct se_ml_stat_grps *lgrps, char *page)
{
	struct se_lun_acl *lacl = container_of(lgrps,
			struct se_lun_acl, ml_stat_grps);
	struct se_node_acl *nacl = lacl->se_lun_nacl;
	struct se_dev_entry *deve;
	ssize_t ret;

	spin_lock_irq(&nacl->device_list_lock);
	deve = &nacl->device_list[lacl->mapped_lun];
	if (!deve->se_lun || !deve->se_lun_acl) {
		spin_unlock_irq(&nacl->device_list_lock);
		return -ENODEV;
	}
	/* FIXME: scsiAuthIntrRowStatus */
	ret = snprintf(page, PAGE_SIZE, "Ready\n");
	spin_unlock_irq(&nacl->device_list_lock);
	return ret;
}
DEV_STAT_SCSI_AUTH_INTR_ATTR_RO(row_status);

CONFIGFS_EATTR_OPS(target_stat_scsi_auth_intr, se_ml_stat_grps,
		scsi_auth_intr_group);

static struct configfs_attribute *target_stat_scsi_auth_intr_attrs[] = {
	&target_stat_scsi_auth_intr_inst.attr,
	&target_stat_scsi_auth_intr_dev.attr,
	&target_stat_scsi_auth_intr_port.attr,
	&target_stat_scsi_auth_intr_indx.attr,
	&target_stat_scsi_auth_intr_dev_or_port.attr,
	&target_stat_scsi_auth_intr_intr_name.attr,
	&target_stat_scsi_auth_intr_map_indx.attr,
	&target_stat_scsi_auth_intr_att_count.attr,
	&target_stat_scsi_auth_intr_num_cmds.attr,
	&target_stat_scsi_auth_intr_read_mbytes.attr,
	&target_stat_scsi_auth_intr_write_mbytes.attr,
	&target_stat_scsi_auth_intr_hs_num_cmds.attr,
	&target_stat_scsi_auth_intr_creation_time.attr,
	&target_stat_scsi_auth_intr_row_status.attr,
	NULL,
};

static struct configfs_item_operations target_stat_scsi_auth_intr_attrib_ops = {
	.show_attribute		= target_stat_scsi_auth_intr_attr_show,
	.store_attribute	= target_stat_scsi_auth_intr_attr_store,
};

static struct config_item_type target_stat_scsi_auth_intr_cit = {
	.ct_item_ops		= &target_stat_scsi_auth_intr_attrib_ops,
	.ct_attrs		= target_stat_scsi_auth_intr_attrs,
	.ct_owner		= THIS_MODULE,
};

/*
 * SCSI Attached Initiator Port Table
 */

CONFIGFS_EATTR_STRUCT(target_stat_scsi_att_intr_port, se_ml_stat_grps);
#define DEV_STAT_SCSI_ATTR_INTR_PORT_ATTR(_name, _mode)			\
static struct target_stat_scsi_att_intr_port_attribute			\
		target_stat_scsi_att_intr_port_##_name =		\
	__CONFIGFS_EATTR(_name, _mode,					\
	target_stat_scsi_att_intr_port_show_attr_##_name,		\
	target_stat_scsi_att_intr_port_store_attr_##_name);

#define DEV_STAT_SCSI_ATTR_INTR_PORT_ATTR_RO(_name)			\
static struct target_stat_scsi_att_intr_port_attribute			\
		target_stat_scsi_att_intr_port_##_name =		\
	__CONFIGFS_EATTR_RO(_name,					\
	target_stat_scsi_att_intr_port_show_attr_##_name);

static ssize_t target_stat_scsi_att_intr_port_show_attr_inst(
	struct se_ml_stat_grps *lgrps, char *page)
{
	struct se_lun_acl *lacl = container_of(lgrps,
			struct se_lun_acl, ml_stat_grps);
	struct se_node_acl *nacl = lacl->se_lun_nacl;
	struct se_dev_entry *deve;
	struct se_portal_group *tpg;
	ssize_t ret;

	spin_lock_irq(&nacl->device_list_lock);
	deve = &nacl->device_list[lacl->mapped_lun];
	if (!deve->se_lun || !deve->se_lun_acl) {
		spin_unlock_irq(&nacl->device_list_lock);
		return -ENODEV;
	}
	tpg = nacl->se_tpg;
	/* scsiInstIndex */
	ret = snprintf(page, PAGE_SIZE, "%u\n",
			tpg->se_tpg_tfo->tpg_get_inst_index(tpg));
	spin_unlock_irq(&nacl->device_list_lock);
	return ret;
}
DEV_STAT_SCSI_ATTR_INTR_PORT_ATTR_RO(inst);

static ssize_t target_stat_scsi_att_intr_port_show_attr_dev(
	struct se_ml_stat_grps *lgrps, char *page)
{
	struct se_lun_acl *lacl = container_of(lgrps,
			struct se_lun_acl, ml_stat_grps);
	struct se_node_acl *nacl = lacl->se_lun_nacl;
	struct se_dev_entry *deve;
	struct se_lun *lun;
	struct se_portal_group *tpg;
	ssize_t ret;

	spin_lock_irq(&nacl->device_list_lock);
	deve = &nacl->device_list[lacl->mapped_lun];
	if (!deve->se_lun || !deve->se_lun_acl) {
		spin_unlock_irq(&nacl->device_list_lock);
		return -ENODEV;
	}
	tpg = nacl->se_tpg;
	lun = deve->se_lun;
	/* scsiDeviceIndex */
	ret = snprintf(page, PAGE_SIZE, "%u\n", lun->lun_se_dev->dev_index);
	spin_unlock_irq(&nacl->device_list_lock);
	return ret;
}
DEV_STAT_SCSI_ATTR_INTR_PORT_ATTR_RO(dev);

static ssize_t target_stat_scsi_att_intr_port_show_attr_port(
	struct se_ml_stat_grps *lgrps, char *page)
{
	struct se_lun_acl *lacl = container_of(lgrps,
			struct se_lun_acl, ml_stat_grps);
	struct se_node_acl *nacl = lacl->se_lun_nacl;
	struct se_dev_entry *deve;
	struct se_portal_group *tpg;
	ssize_t ret;

	spin_lock_irq(&nacl->device_list_lock);
	deve = &nacl->device_list[lacl->mapped_lun];
	if (!deve->se_lun || !deve->se_lun_acl) {
		spin_unlock_irq(&nacl->device_list_lock);
		return -ENODEV;
	}
	tpg = nacl->se_tpg;
	/* scsiPortIndex */
	ret = snprintf(page, PAGE_SIZE, "%u\n", tpg->se_tpg_tfo->tpg_get_tag(tpg));
	spin_unlock_irq(&nacl->device_list_lock);
	return ret;
}
DEV_STAT_SCSI_ATTR_INTR_PORT_ATTR_RO(port);

static ssize_t target_stat_scsi_att_intr_port_show_attr_indx(
	struct se_ml_stat_grps *lgrps, char *page)
{
	struct se_lun_acl *lacl = container_of(lgrps,
			struct se_lun_acl, ml_stat_grps);
	struct se_node_acl *nacl = lacl->se_lun_nacl;
	struct se_session *se_sess;
	struct se_portal_group *tpg;
	ssize_t ret;

	spin_lock_irq(&nacl->nacl_sess_lock);
	se_sess = nacl->nacl_sess;
	if (!se_sess) {
		spin_unlock_irq(&nacl->nacl_sess_lock);
		return -ENODEV;
	}

	tpg = nacl->se_tpg;
	/* scsiAttIntrPortIndex */
	ret = snprintf(page, PAGE_SIZE, "%u\n",
			tpg->se_tpg_tfo->sess_get_index(se_sess));
	spin_unlock_irq(&nacl->nacl_sess_lock);
	return ret;
}
DEV_STAT_SCSI_ATTR_INTR_PORT_ATTR_RO(indx);

static ssize_t target_stat_scsi_att_intr_port_show_attr_port_auth_indx(
	struct se_ml_stat_grps *lgrps, char *page)
{
	struct se_lun_acl *lacl = container_of(lgrps,
			struct se_lun_acl, ml_stat_grps);
	struct se_node_acl *nacl = lacl->se_lun_nacl;
	struct se_dev_entry *deve;
	ssize_t ret;

	spin_lock_irq(&nacl->device_list_lock);
	deve = &nacl->device_list[lacl->mapped_lun];
	if (!deve->se_lun || !deve->se_lun_acl) {
		spin_unlock_irq(&nacl->device_list_lock);
		return -ENODEV;
	}
	/* scsiAttIntrPortAuthIntrIdx */
	ret = snprintf(page, PAGE_SIZE, "%u\n", nacl->acl_index);
	spin_unlock_irq(&nacl->device_list_lock);
	return ret;
}
DEV_STAT_SCSI_ATTR_INTR_PORT_ATTR_RO(port_auth_indx);

static ssize_t target_stat_scsi_att_intr_port_show_attr_port_ident(
	struct se_ml_stat_grps *lgrps, char *page)
{
	struct se_lun_acl *lacl = container_of(lgrps,
			struct se_lun_acl, ml_stat_grps);
	struct se_node_acl *nacl = lacl->se_lun_nacl;
	struct se_session *se_sess;
	struct se_portal_group *tpg;
	ssize_t ret;
	unsigned char buf[64];

	spin_lock_irq(&nacl->nacl_sess_lock);
	se_sess = nacl->nacl_sess;
	if (!se_sess) {
		spin_unlock_irq(&nacl->nacl_sess_lock);
		return -ENODEV;
	}

	tpg = nacl->se_tpg;
	/* scsiAttIntrPortName+scsiAttIntrPortIdentifier */
	memset(buf, 0, 64);
	if (tpg->se_tpg_tfo->sess_get_initiator_sid != NULL)
		tpg->se_tpg_tfo->sess_get_initiator_sid(se_sess, buf, 64);

	ret = snprintf(page, PAGE_SIZE, "%s+i+%s\n", nacl->initiatorname, buf);
	spin_unlock_irq(&nacl->nacl_sess_lock);
	return ret;
}
DEV_STAT_SCSI_ATTR_INTR_PORT_ATTR_RO(port_ident);

CONFIGFS_EATTR_OPS(target_stat_scsi_att_intr_port, se_ml_stat_grps,
		scsi_att_intr_port_group);

static struct configfs_attribute *target_stat_scsi_ath_intr_port_attrs[] = {
	&target_stat_scsi_att_intr_port_inst.attr,
	&target_stat_scsi_att_intr_port_dev.attr,
	&target_stat_scsi_att_intr_port_port.attr,
	&target_stat_scsi_att_intr_port_indx.attr,
	&target_stat_scsi_att_intr_port_port_auth_indx.attr,
	&target_stat_scsi_att_intr_port_port_ident.attr,
	NULL,
};

static struct configfs_item_operations target_stat_scsi_att_intr_port_attrib_ops = {
	.show_attribute		= target_stat_scsi_att_intr_port_attr_show,
	.store_attribute	= target_stat_scsi_att_intr_port_attr_store,
};

static struct config_item_type target_stat_scsi_att_intr_port_cit = {
	.ct_item_ops		= &target_stat_scsi_att_intr_port_attrib_ops,
	.ct_attrs		= target_stat_scsi_ath_intr_port_attrs,
	.ct_owner		= THIS_MODULE,
};

/*
 * Called from target_core_fabric_configfs.c:target_fabric_make_mappedlun() to setup
 * the target MappedLUN statistics groups + configfs CITs located in target_core_stat.c
 */
void target_stat_setup_mappedlun_default_groups(struct se_lun_acl *lacl)
{
	struct config_group *ml_stat_grp = &lacl->ml_stat_grps.stat_group;

	config_group_init_type_name(&lacl->ml_stat_grps.scsi_auth_intr_group,
			"scsi_auth_intr", &target_stat_scsi_auth_intr_cit);
	config_group_init_type_name(&lacl->ml_stat_grps.scsi_att_intr_port_group,
			"scsi_att_intr_port", &target_stat_scsi_att_intr_port_cit);

	ml_stat_grp->default_groups[0] = &lacl->ml_stat_grps.scsi_auth_intr_group;
	ml_stat_grp->default_groups[1] = &lacl->ml_stat_grps.scsi_att_intr_port_group;
	ml_stat_grp->default_groups[2] = NULL;
}