diff -Naurp open-iscsi.diffbase/kernel/iscsi_compat.h open-iscsi.test/kernel/iscsi_compat.h
--- open-iscsi.diffbase/kernel/iscsi_compat.h	1969-12-31 18:00:00.000000000 -0600
+++ open-iscsi.test/kernel/iscsi_compat.h	2006-01-16 16:25:56.000000000 -0600
@@ -0,0 +1,55 @@
+/*
+ * compat crap for older kernels.
+ * do not send to linux-scsi
+ */
+#include <linux/version.h>
+#include <linux/kernel.h>
+#include <scsi/scsi.h>
+
+#ifndef DEFINE_MUTEX
+
+/* mutex changes from 2.6.16-rc1 and up */
+#define DEFINE_MUTEX DECLARE_MUTEX
+#define mutex_lock down
+#define mutex_unlock up
+#define mutex semaphore
+#define mutex_init init_MUTEX
+#endif
+
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,12)
+
+void int_to_scsilun(unsigned int lun, struct scsi_lun *scsilun)
+{
+	int i;
+
+	memset(scsilun->scsi_lun, 0, sizeof(scsilun->scsi_lun));
+
+	for (i = 0; i < sizeof(lun); i += 2) {
+		scsilun->scsi_lun[i] = (lun >> 8) & 0xFF;
+		scsilun->scsi_lun[i+1] = lun & 0xFF;
+		lun = lun >> 16;
+	}
+}
+
+#define __nlmsg_put(skb, daemon_pid, seq, type, len, flags) \
+	__nlmsg_put(skb, daemon_pid, 0, 0, len)
+
+#endif
+
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,13)
+
+#define netlink_kernel_create(uint, groups, input, mod) \
+	netlink_kernel_create(uint, input)
+
+#define gfp_t unsigned
+
+void *kzalloc(size_t size, gfp_t flags)
+{
+	void *ret = kmalloc(size, flags);
+	if (ret)
+		memset(ret, 0, size);
+	return ret;
+}
+
+#endif
+
diff -Naurp open-iscsi.diffbase/kernel/iscsi_tcp.c open-iscsi.test/kernel/iscsi_tcp.c
--- open-iscsi.diffbase/kernel/iscsi_tcp.c	2006-01-16 15:38:52.000000000 -0600
+++ open-iscsi.test/kernel/iscsi_tcp.c	2006-01-16 16:10:42.000000000 -0600
@@ -33,7 +33,6 @@
 #include <linux/delay.h>
 #include <linux/kfifo.h>
 #include <linux/scatterlist.h>
-#include <linux/mutex.h>
 #include <net/tcp.h>
 #include <scsi/scsi_cmnd.h>
 #include <scsi/scsi_device.h>
@@ -44,6 +43,7 @@
 #include <scsi/scsi.h>
 #include "scsi_transport_iscsi.h"
 
+#include "iscsi_compat.h"
 #include "iscsi_tcp.h"
 
 MODULE_AUTHOR("Dmitry Yusupov <dmitry_yus@yahoo.com>, "
diff -Naurp open-iscsi.diffbase/kernel/scsi_transport_iscsi.c open-iscsi.test/kernel/scsi_transport_iscsi.c
--- open-iscsi.diffbase/kernel/scsi_transport_iscsi.c	2006-01-16 15:38:52.000000000 -0600
+++ open-iscsi.test/kernel/scsi_transport_iscsi.c	2006-01-16 15:54:47.000000000 -0600
@@ -22,7 +22,6 @@
  */
 #include <linux/module.h>
 #include <linux/mempool.h>
-#include <linux/mutex.h>
 #include <net/tcp.h>
 #include <scsi/scsi.h>
 #include <scsi/scsi_host.h>
@@ -30,6 +29,7 @@
 #include <scsi/scsi_transport.h>
 #include "scsi_transport_iscsi.h"
 #include "iscsi_if.h"
+#include "iscsi_compat.h"
 
 #define ISCSI_SESSION_ATTRS 8
 #define ISCSI_CONN_ATTRS 6