linux-imx

/*

 * iSCSI lib functions

 *

 * Copyright (C) 2006 Red Hat, Inc.  All rights reserved.

 * Copyright (C) 2004 - 2006 Mike Christie

 * Copyright (C) 2004 - 2005 Dmitry Yusupov

 * Copyright (C) 2004 - 2005 Alex Aizman

 * maintained by open-iscsi@googlegroups.com

 *

 * 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/types.h>

#include <linux/kfifo.h>

#include <linux/delay.h>

#include <linux/log2.h>

#include <linux/slab.h>

#include <linux/sched/signal.h>

#include <linux/module.h>

#include <asm/unaligned.h>

#include <net/tcp.h>

#include <scsi/scsi_cmnd.h>

#include <scsi/scsi_device.h>

#include <scsi/scsi_eh.h>

#include <scsi/scsi_tcq.h>

#include <scsi/scsi_host.h>

#include <scsi/scsi.h>

#include <scsi/iscsi_proto.h>

#include <scsi/scsi_transport.h>

#include <scsi/scsi_transport_iscsi.h>

#include <scsi/libiscsi.h>

#include <trace/events/iscsi.h>

​

static int iscsi_dbg_lib_conn;

module_param_named(debug_libiscsi_conn, iscsi_dbg_lib_conn, int,

           S_IRUGO | S_IWUSR);

MODULE_PARM_DESC(debug_libiscsi_conn,

         "Turn on debugging for connections in libiscsi module. "

         "Set to 1 to turn on, and zero to turn off. Default is off.");

​

static int iscsi_dbg_lib_session;

module_param_named(debug_libiscsi_session, iscsi_dbg_lib_session, int,

           S_IRUGO | S_IWUSR);

MODULE_PARM_DESC(debug_libiscsi_session,

         "Turn on debugging for sessions in libiscsi module. "

         "Set to 1 to turn on, and zero to turn off. Default is off.");

​

static int iscsi_dbg_lib_eh;

module_param_named(debug_libiscsi_eh, iscsi_dbg_lib_eh, int,

           S_IRUGO | S_IWUSR);

MODULE_PARM_DESC(debug_libiscsi_eh,

         "Turn on debugging for error handling in libiscsi module. "

         "Set to 1 to turn on, and zero to turn off. Default is off.");

​

#define ISCSI_DBG_CONN(_conn, dbg_fmt, arg...)          \

    do {                            \

        if (iscsi_dbg_lib_conn)             \

            iscsi_conn_printk(KERN_INFO, _conn, \

                         "%s " dbg_fmt, \

                         __func__, ##arg);  \

        iscsi_dbg_trace(trace_iscsi_dbg_conn,       \

                &(_conn)->cls_conn->dev,    \

                "%s " dbg_fmt, __func__, ##arg);\

    } while (0);

​

#define ISCSI_DBG_SESSION(_session, dbg_fmt, arg...)            \

    do {                                \

        if (iscsi_dbg_lib_session)              \

            iscsi_session_printk(KERN_INFO, _session,   \

                         "%s " dbg_fmt,     \

                         __func__, ##arg);      \

        iscsi_dbg_trace(trace_iscsi_dbg_session,        \

                &(_session)->cls_session->dev,      \

                "%s " dbg_fmt, __func__, ##arg);    \

    } while (0);

​

#define ISCSI_DBG_EH(_session, dbg_fmt, arg...)             \

    do {                                \

        if (iscsi_dbg_lib_eh)                   \

            iscsi_session_printk(KERN_INFO, _session,   \

                         "%s " dbg_fmt,     \