path: root/kernel/2.6.16-suse.patch

diff --git a/iscsi_tcp.c b/iscsi_tcp.c
index 908b541..dfd8e31 100644
--- a/iscsi_tcp.c
+++ b/iscsi_tcp.c
@@ -426,6 +426,17 @@ iscsi_segment_seek_sg(struct iscsi_segment *segment,
 
 	debug_scsi("iscsi_segment_seek_sg offset %u size %llu\n",
 		  offset, size);
+
+	/*
+	 * older kernels could send use_sg=0 for commands like sgio
+	 * or scsi-ml commands.
+	 */
+	if (!sg_count) {
+		iscsi_segment_init_linear(segment, (void *)sg_list + offset,
+					  size, done, hash);
+		return 0;
+	}
+
 	__iscsi_segment_init(segment, size, done, hash);
 	for_each_sg(sg_list, sg, sg_count, i) {
 		debug_scsi("sg %d, len %u offset %u\n", i, sg->length,
@@ -536,7 +547,7 @@ iscsi_data_rsp(struct iscsi_conn *conn, struct iscsi_task *task)
 	struct iscsi_session *session = conn->session;
 	struct scsi_cmnd *sc = task->sc;
 	int datasn = be32_to_cpu(rhdr->datasn);
-	unsigned total_in_length = scsi_in(sc)->length;
+	unsigned total_in_length = scsi_bufflen(sc);
 
 	iscsi_update_cmdsn(session, (struct iscsi_nopin*)rhdr);
 	if (tcp_conn->in.datalen == 0)
@@ -568,7 +579,7 @@ iscsi_data_rsp(struct iscsi_conn *conn, struct iscsi_task *task)
 			if (res_count > 0 &&
 			    (rhdr->flags & ISCSI_FLAG_CMD_OVERFLOW ||
 			     res_count <= total_in_length))
-				scsi_in(sc)->resid = res_count;
+				scsi_set_resid(sc, res_count);
 			else
 				sc->result = (DID_BAD_TARGET << 16) |
 					rhdr->cmd_status;
@@ -679,11 +690,11 @@ iscsi_r2t_rsp(struct iscsi_conn *conn, struct iscsi_task *task)
 			    r2t->data_length, session->max_burst);
 
 	r2t->data_offset = be32_to_cpu(rhdr->data_offset);
-	if (r2t->data_offset + r2t->data_length > scsi_out(task->sc)->length) {
+	if (r2t->data_offset + r2t->data_length > scsi_bufflen(task->sc)) {
 		iscsi_conn_printk(KERN_ERR, conn,
 				  "invalid R2T with data len %u at offset %u "
 				  "and total length %d\n", r2t->data_length,
-				  r2t->data_offset, scsi_out(task->sc)->length);
+				  r2t->data_offset, scsi_bufflen(task->sc));
 		__kfifo_put(tcp_task->r2tpool.queue, (void*)&r2t,
 			    sizeof(void*));
 		return ISCSI_ERR_DATALEN;
@@ -783,7 +794,6 @@ iscsi_tcp_hdr_dissect(struct iscsi_conn *conn, struct iscsi_hdr *hdr)
 		if (tcp_conn->in.datalen) {
 			struct iscsi_tcp_task *tcp_task = task->dd_data;
 			struct hash_desc *rx_hash = NULL;
-			struct scsi_data_buffer *sdb = scsi_in(task->sc);
 
 			/*
 			 * Setup copy of Data-In into the Scsi_Cmnd
@@ -801,8 +811,8 @@ iscsi_tcp_hdr_dissect(struct iscsi_conn *conn, struct iscsi_hdr *hdr)
 				  tcp_task->data_offset,
 				  tcp_conn->in.datalen);
 			rc = iscsi_segment_seek_sg(&tcp_conn->in.segment,
-						   sdb->table.sgl,
-						   sdb->table.nents,
+						   scsi_sglist(task->sc),
+						   scsi_sg_count(task->sc),
 						   tcp_task->data_offset,
 						   tcp_conn->in.datalen,
 						   iscsi_tcp_process_data_in,
@@ -1369,8 +1379,8 @@ iscsi_tcp_task_init(struct iscsi_task *task)
 		return 0;
 
 	/* If we have immediate data, attach a payload */
-	err = iscsi_tcp_send_data_prep(conn, scsi_out(sc)->table.sgl,
-				       scsi_out(sc)->table.nents,
+	err = iscsi_tcp_send_data_prep(conn, scsi_sglist(sc),
+				       scsi_sg_count(sc),
 				       0, task->imm_count);
 	if (err)
 		return err;
@@ -1393,7 +1403,6 @@ iscsi_tcp_task_xmit(struct iscsi_task *task)
 	struct iscsi_conn *conn = task->conn;
 	struct iscsi_tcp_task *tcp_task = task->dd_data;
 	struct scsi_cmnd *sc = task->sc;
-	struct scsi_data_buffer *sdb;
 	int rc = 0;
 
 flush:
@@ -1413,7 +1422,6 @@ flush:
 	if (sc->sc_data_direction != DMA_TO_DEVICE)
 		return 0;
 
-	sdb = scsi_out(sc);
 	if (task->unsol_count != 0) {
 		struct iscsi_data *hdr = &tcp_task->unsol_dtask.hdr;
 
@@ -1428,8 +1436,8 @@ flush:
 				task->itt, tcp_task->sent, task->data_count);
 
 		iscsi_tcp_send_hdr_prep(conn, hdr, sizeof(*hdr));
-		rc = iscsi_tcp_send_data_prep(conn, sdb->table.sgl,
-					      sdb->table.nents, tcp_task->sent,
+		rc = iscsi_tcp_send_data_prep(conn, scsi_sglist(sc),
+					      scsi_sg_count(sc), tcp_task->sent,
 					      task->data_count);
 		if (rc)
 			goto fail;
@@ -1475,8 +1483,8 @@ flush:
 		iscsi_tcp_send_hdr_prep(conn, &r2t->dtask.hdr,
 					sizeof(struct iscsi_hdr));
 
-		rc = iscsi_tcp_send_data_prep(conn, sdb->table.sgl,
-					      sdb->table.nents,
+		rc = iscsi_tcp_send_data_prep(conn, scsi_sglist(sc),
+					      scsi_sg_count(sc),
 					      r2t->data_offset + r2t->sent,
 					      r2t->data_count);
 		if (rc)
@@ -1864,7 +1872,11 @@ iscsi_tcp_session_create(struct iscsi_endpoint *ep, uint16_t cmds_max,
 	shost->max_lun = iscsi_max_lun;
 	shost->max_id = 0;
 	shost->max_channel = 0;
+#ifndef SCSI_MAX_VARLEN_CDB_SIZE
+	shost->max_cmd_len = 16;
+#else
 	shost->max_cmd_len = SCSI_MAX_VARLEN_CDB_SIZE;
+#endif
 
 	if (iscsi_host_add(shost, NULL))
 		goto free_host;
@@ -1917,6 +1929,9 @@ static int iscsi_tcp_slave_configure(struct scsi_device *sdev)
 }
 
 static struct scsi_host_template iscsi_sht = {
+#if LINUX_VERSION_CODE == KERNEL_VERSION(2,6,24)
+	.use_sg_chaining	= ENABLE_SG_CHAINING,
+#endif
 	.module			= THIS_MODULE,
 	.name			= "iSCSI Initiator over TCP/IP",
 	.queuecommand           = iscsi_queuecommand,
diff --git a/iscsi_tcp.h b/iscsi_tcp.h
index 68423e8..1796c96 100644
--- a/iscsi_tcp.h
+++ b/iscsi_tcp.h
@@ -24,6 +24,8 @@
 
 #include "libiscsi.h"
 
+#include "open_iscsi_compat.h"
+
 struct crypto_hash;
 struct socket;
 struct iscsi_tcp_conn;
diff --git a/libiscsi.c b/libiscsi.c
index dfeaed3..0fb0705 100644
--- a/libiscsi.c
+++ b/libiscsi.c
@@ -24,7 +24,10 @@
 #include <linux/types.h>
 #include <linux/kfifo.h>
 #include <linux/delay.h>
+#include <linux/version.h>
+#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,19)
 #include <linux/log2.h>
+#endif
 #include <asm/unaligned.h>
 #include <net/tcp.h>
 #include <scsi/scsi_cmnd.h>
@@ -187,7 +190,7 @@ static int iscsi_prep_bidi_ahs(struct iscsi_task *task)
 						  sizeof(rlen_ahdr->reserved));
 	rlen_ahdr->ahstype = ISCSI_AHSTYPE_RLENGTH;
 	rlen_ahdr->reserved = 0;
-	rlen_ahdr->read_length = cpu_to_be32(scsi_in(sc)->length);
+	rlen_ahdr->read_length = cpu_to_be32(scsi_bufflen(sc));
 
 	debug_scsi("bidi-in rlen_ahdr->read_length(%d) "
 		   "rlen_ahdr->ahslength(%d)\n",
@@ -242,7 +245,7 @@ static int iscsi_prep_scsi_cmd_pdu(struct iscsi_task *task)
 			return rc;
 	}
 	if (sc->sc_data_direction == DMA_TO_DEVICE) {
-		unsigned out_len = scsi_out(sc)->length;
+		unsigned out_len = scsi_bufflen(sc);
 		hdr->data_length = cpu_to_be32(out_len);
 		hdr->flags |= ISCSI_FLAG_CMD_WRITE;
 		/*
@@ -286,7 +289,7 @@ static int iscsi_prep_scsi_cmd_pdu(struct iscsi_task *task)
 	} else {
 		hdr->flags |= ISCSI_FLAG_CMD_FINAL;
 		zero_data(hdr->dlength);
-		hdr->data_length = cpu_to_be32(scsi_in(sc)->length);
+		hdr->data_length = cpu_to_be32(scsi_bufflen(sc));
 
 		if (sc->sc_data_direction == DMA_FROM_DEVICE)
 			hdr->flags |= ISCSI_FLAG_CMD_READ;
@@ -314,7 +317,7 @@ static int iscsi_prep_scsi_cmd_pdu(struct iscsi_task *task)
 		   "bidirectional" : sc->sc_data_direction == DMA_TO_DEVICE ?
 		   "write" : "read", conn->id, sc, sc->cmnd[0], task->itt,
 		   scsi_bufflen(sc),
-		   scsi_bidi_cmnd(sc) ? scsi_in(sc)->length : 0,
+		   scsi_bidi_cmnd(sc) ? scsi_bufflen(sc) : 0,
 		   session->cmdsn, session->max_cmdsn - session->exp_cmdsn + 1);
 	return 0;
 }
@@ -412,12 +415,7 @@ static void fail_command(struct iscsi_conn *conn, struct iscsi_task *task,
 		return;
 
 	sc->result = err;
-	if (!scsi_bidi_cmnd(sc))
-		scsi_set_resid(sc, scsi_bufflen(sc));
-	else {
-		scsi_out(sc)->resid = scsi_out(sc)->length;
-		scsi_in(sc)->resid = scsi_in(sc)->length;
-	}
+	scsi_set_resid(sc, scsi_bufflen(sc));
 
 	if (conn->task == task)
 		conn->task = NULL;
@@ -592,7 +590,7 @@ invalid_datalen:
 			goto out;
 		}
 
-		senselen = get_unaligned_be16(data);
+		senselen = be16_to_cpu(get_unaligned((__be16 *) data));
 		if (datalen < senselen)
 			goto invalid_datalen;
 
@@ -608,8 +606,8 @@ invalid_datalen:
 
 		if (scsi_bidi_cmnd(sc) && res_count > 0 &&
 				(rhdr->flags & ISCSI_FLAG_CMD_BIDI_OVERFLOW ||
-				 res_count <= scsi_in(sc)->length))
-			scsi_in(sc)->resid = res_count;
+				 res_count <= scsi_bufflen(sc)))
+			scsi_set_resid(sc, res_count);
 		else
 			sc->result = (DID_BAD_TARGET << 16) | rhdr->cmd_status;
 	}
@@ -1127,10 +1125,9 @@ again:
 	return rc;
 }
 
-static void iscsi_xmitworker(struct work_struct *work)
+static void iscsi_xmitworker(void *data)
 {
-	struct iscsi_conn *conn =
-		container_of(work, struct iscsi_conn, xmitwork);
+	struct iscsi_conn *conn = data;
 	int rc;
 	/*
 	 * serialize Xmit worker on a per-connection basis.
@@ -1273,12 +1270,7 @@ reject:
 fault:
 	spin_unlock(&session->lock);
 	debug_scsi("iscsi: cmd 0x%x is not queued (%d)\n", sc->cmnd[0], reason);
-	if (!scsi_bidi_cmnd(sc))
-		scsi_set_resid(sc, scsi_bufflen(sc));
-	else {
-		scsi_out(sc)->resid = scsi_out(sc)->length;
-		scsi_in(sc)->resid = scsi_in(sc)->length;
-	}
+	scsi_set_resid(sc, scsi_bufflen(sc));
 	done(sc);
 	spin_lock(host->host_lock);
 	return 0;
@@ -2099,7 +2091,7 @@ iscsi_conn_setup(struct iscsi_cls_session *cls_session, int dd_size,
 	INIT_LIST_HEAD(&conn->mgmtqueue);
 	INIT_LIST_HEAD(&conn->xmitqueue);
 	INIT_LIST_HEAD(&conn->requeue);
-	INIT_WORK(&conn->xmitwork, iscsi_xmitworker);
+	INIT_WORK(&conn->xmitwork, iscsi_xmitworker, conn);
 
 	/* allocate login_task used for the login/text sequences */
 	spin_lock_bh(&session->lock);
diff --git a/libiscsi.h b/libiscsi.h
index cfc5fa6..64508d8 100644
--- a/libiscsi.h
+++ b/libiscsi.h
@@ -32,6 +32,8 @@
 #include "iscsi_proto.h"
 #include "iscsi_if.h"
 
+#include "open_iscsi_compat.h"
+
 struct scsi_transport_template;
 struct scsi_host_template;
 struct scsi_device;
diff --git a/scsi_transport_iscsi.c b/scsi_transport_iscsi.c
index 535e461..1ae65fb 100644
--- a/scsi_transport_iscsi.c
+++ b/scsi_transport_iscsi.c
@@ -41,13 +41,13 @@ struct iscsi_internal {
 	struct scsi_transport_template t;
 	struct iscsi_transport *iscsi_transport;
 	struct list_head list;
-	struct device dev;
+	struct class_device cdev;
 
-	struct device_attribute *host_attrs[ISCSI_HOST_ATTRS + 1];
+	struct class_device_attribute *host_attrs[ISCSI_HOST_ATTRS + 1];
 	struct transport_container conn_cont;
-	struct device_attribute *conn_attrs[ISCSI_CONN_ATTRS + 1];
+	struct class_device_attribute *conn_attrs[ISCSI_CONN_ATTRS + 1];
 	struct transport_container session_cont;
-	struct device_attribute *session_attrs[ISCSI_SESSION_ATTRS + 1];
+	struct class_device_attribute *session_attrs[ISCSI_SESSION_ATTRS + 1];
 };
 
 static atomic_t iscsi_session_nr; /* sysfs session id for next new session */
@@ -64,12 +64,12 @@ static DEFINE_SPINLOCK(iscsi_transport_lock);
 #define to_iscsi_internal(tmpl) \
 	container_of(tmpl, struct iscsi_internal, t)
 
-#define dev_to_iscsi_internal(_dev) \
-	container_of(_dev, struct iscsi_internal, dev)
+#define cdev_to_iscsi_internal(_cdev) \
+	container_of(_cdev, struct iscsi_internal, cdev)
 
-static void iscsi_transport_release(struct device *dev)
+static void iscsi_transport_release(struct class_device *cdev)
 {
-	struct iscsi_internal *priv = dev_to_iscsi_internal(dev);
+	struct iscsi_internal *priv = cdev_to_iscsi_internal(cdev);
 	kfree(priv);
 }
 
@@ -79,33 +79,31 @@ static void iscsi_transport_release(struct device *dev)
  */
 static struct class iscsi_transport_class = {
 	.name = "iscsi_transport",
-	.dev_release = iscsi_transport_release,
+	.release = iscsi_transport_release,
 };
 
 static ssize_t
-show_transport_handle(struct device *dev, struct device_attribute *attr,
-		      char *buf)
+show_transport_handle(struct class_device *cdev, char *buf)
 {
-	struct iscsi_internal *priv = dev_to_iscsi_internal(dev);
+	struct iscsi_internal *priv = cdev_to_iscsi_internal(cdev);
 	return sprintf(buf, "%llu\n", (unsigned long long)iscsi_handle(priv->iscsi_transport));
 }
-static DEVICE_ATTR(handle, S_IRUGO, show_transport_handle, NULL);
+static CLASS_DEVICE_ATTR(handle, S_IRUGO, show_transport_handle, NULL);
 
 #define show_transport_attr(name, format)				\
 static ssize_t								\
-show_transport_##name(struct device *dev, 				\
-		      struct device_attribute *attr,char *buf)		\
+show_transport_##name(struct class_device *cdev, char *buf)		\
 {									\
-	struct iscsi_internal *priv = dev_to_iscsi_internal(dev);	\
+	struct iscsi_internal *priv = cdev_to_iscsi_internal(cdev);	\
 	return sprintf(buf, format"\n", priv->iscsi_transport->name);	\
 }									\
-static DEVICE_ATTR(name, S_IRUGO, show_transport_##name, NULL);
+static CLASS_DEVICE_ATTR(name, S_IRUGO, show_transport_##name, NULL);
 
 show_transport_attr(caps, "0x%x");
 
 static struct attribute *iscsi_transport_attrs[] = {
-	&dev_attr_handle.attr,
-	&dev_attr_caps.attr,
+	&class_device_attr_handle.attr,
+	&class_device_attr_caps.attr,
 	NULL,
 };
 
@@ -113,6 +111,7 @@ static struct attribute_group iscsi_transport_group = {
 	.attrs = iscsi_transport_attrs,
 };
 
+#if 0
 /*
  * iSCSI endpoint attrs
  */
@@ -229,9 +228,10 @@ struct iscsi_endpoint *iscsi_lookup_endpoint(u64 handle)
 	return iscsi_dev_to_endpoint(dev);
 }
 EXPORT_SYMBOL_GPL(iscsi_lookup_endpoint);
+#endif
 
 static int iscsi_setup_host(struct transport_container *tc, struct device *dev,
-			    struct device *cdev)
+			    struct class_device *cdev)
 {
 	struct Scsi_Host *shost = dev_to_shost(dev);
 	struct iscsi_cls_host *ihost = shost->shost_data;
@@ -250,7 +250,7 @@ static int iscsi_setup_host(struct transport_container *tc, struct device *dev,
 }
 
 static int iscsi_remove_host(struct transport_container *tc, struct device *dev,
-			     struct device *cdev)
+			     struct class_device *cdev)
 {
 	struct Scsi_Host *shost = dev_to_shost(dev);
 	struct iscsi_cls_host *ihost = shost->shost_data;
@@ -490,10 +490,9 @@ static int iscsi_user_scan(struct Scsi_Host *shost, uint channel,
 				     iscsi_user_scan_session);
 }
 
-static void iscsi_scan_session(struct work_struct *work)
+static void iscsi_scan_session(void *data)
 {
-	struct iscsi_cls_session *session =
-			container_of(work, struct iscsi_cls_session, scan_work);
+	struct iscsi_cls_session *session = data;
 	struct Scsi_Host *shost = iscsi_session_to_shost(session);
 	struct iscsi_cls_host *ihost = shost->shost_data;
 	struct iscsi_scan_data scan_data;
@@ -506,11 +505,9 @@ static void iscsi_scan_session(struct work_struct *work)
 	atomic_dec(&ihost->nr_scans);
 }
 
-static void session_recovery_timedout(struct work_struct *work)
+static void session_recovery_timedout(void *data)
 {
-	struct iscsi_cls_session *session =
-		container_of(work, struct iscsi_cls_session,
-			     recovery_work.work);
+	struct iscsi_cls_session *session = data;
 	unsigned long flags;
 
 	iscsi_cls_session_printk(KERN_INFO, session,
@@ -536,13 +533,13 @@ static void session_recovery_timedout(struct work_struct *work)
 	scsi_target_unblock(&session->dev);
 }
 
-static void __iscsi_unblock_session(struct work_struct *work)
+static void __iscsi_unblock_session(void *data)
 {
-	struct iscsi_cls_session *session =
-			container_of(work, struct iscsi_cls_session,
-				     unblock_work);
+	struct iscsi_cls_session *session = data;
+#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,19)
 	struct Scsi_Host *shost = iscsi_session_to_shost(session);
 	struct iscsi_cls_host *ihost = shost->shost_data;
+#endif
 	unsigned long flags;
 
 	/*
@@ -560,10 +557,12 @@ static void __iscsi_unblock_session(struct work_struct *work)
 	 * the async scanning code (drivers like iscsi_tcp do login and
 	 * scanning from userspace).
 	 */
+#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,19)
 	if (shost->hostt->scan_finished) {
 		if (queue_work(ihost->scan_workq, &session->scan_work))
 			atomic_inc(&ihost->nr_scans);
 	}
+#endif
 }
 
 /**
@@ -583,11 +582,9 @@ void iscsi_unblock_session(struct iscsi_cls_session *session)
 }
 EXPORT_SYMBOL_GPL(iscsi_unblock_session);
 
-static void __iscsi_block_session(struct work_struct *work)
+static void __iscsi_block_session(void *data)
 {
-	struct iscsi_cls_session *session =
-			container_of(work, struct iscsi_cls_session,
-				     block_work);
+	struct iscsi_cls_session *session = data;
 	unsigned long flags;
 
 	spin_lock_irqsave(&session->lock, flags);
@@ -604,11 +601,9 @@ void iscsi_block_session(struct iscsi_cls_session *session)
 }
 EXPORT_SYMBOL_GPL(iscsi_block_session);
 
-static void __iscsi_unbind_session(struct work_struct *work)
+static void __iscsi_unbind_session(void *data)
 {
-	struct iscsi_cls_session *session =
-			container_of(work, struct iscsi_cls_session,
-				     unbind_work);
+	struct iscsi_cls_session *session = data;
 	struct Scsi_Host *shost = iscsi_session_to_shost(session);
 	struct iscsi_cls_host *ihost = shost->shost_data;
 	unsigned long flags;
@@ -651,12 +646,12 @@ iscsi_alloc_session(struct Scsi_Host *shost, struct iscsi_transport *transport,
 	session->transport = transport;
 	session->recovery_tmo = 120;
 	session->state = ISCSI_SESSION_FREE;
-	INIT_DELAYED_WORK(&session->recovery_work, session_recovery_timedout);
+	INIT_WORK(&session->recovery_work, session_recovery_timedout, session);
 	INIT_LIST_HEAD(&session->sess_list);
-	INIT_WORK(&session->unblock_work, __iscsi_unblock_session);
-	INIT_WORK(&session->block_work, __iscsi_block_session);
-	INIT_WORK(&session->unbind_work, __iscsi_unbind_session);
-	INIT_WORK(&session->scan_work, iscsi_scan_session);
+	INIT_WORK(&session->unblock_work, __iscsi_unblock_session, session);
+	INIT_WORK(&session->block_work, __iscsi_block_session, session);
+	INIT_WORK(&session->unbind_work, __iscsi_unbind_session, session);
+	INIT_WORK(&session->scan_work, iscsi_scan_session, session);
 	spin_lock_init(&session->lock);
 
 	/* this is released in the dev's release function */
@@ -1300,6 +1295,8 @@ static int
 iscsi_if_transport_ep(struct iscsi_transport *transport,
 		      struct iscsi_uevent *ev, int msg_type)
 {
+	return -ENOSYS;
+#if 0
 	struct iscsi_endpoint *ep;
 	struct sockaddr *dst_addr;
 	int rc = 0;
@@ -1340,6 +1337,8 @@ iscsi_if_transport_ep(struct iscsi_transport *transport,
 		break;
 	}
 	return rc;
+
+#endif
 }
 
 static int
@@ -1421,6 +1420,9 @@ iscsi_if_recv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
 					      ev->u.c_session.queue_depth);
 		break;
 	case ISCSI_UEVENT_CREATE_BOUND_SESSION:
+		err = -ENOSYS;
+		break;
+#if 0
 		ep = iscsi_lookup_endpoint(ev->u.c_bound_session.ep_handle);
 		if (!ep) {
 			err = -EINVAL;
@@ -1432,6 +1434,7 @@ iscsi_if_recv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
 					ev->u.c_bound_session.cmds_max,
 					ev->u.c_bound_session.queue_depth);
 		break;
+#endif
 	case ISCSI_UEVENT_DESTROY_SESSION:
 		session = iscsi_session_lookup(ev->u.d_session.sid);
 		if (session)
@@ -1514,55 +1517,70 @@ iscsi_if_recv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
 }
 
 /*
- * Get message from skb.  Each message is processed by iscsi_if_recv_msg.
- * Malformed skbs with wrong lengths or invalid creds are not processed.
+ * Get message from skb (based on rtnetlink_rcv_skb).  Each message is
+ * processed by iscsi_if_recv_msg.  Malformed skbs with wrong lengths or
+ * invalid creds are discarded silently.
  */
 static void
-iscsi_if_rx(struct sk_buff *skb)
+iscsi_if_rx(struct sock *sk, int len)
 {
+	struct sk_buff *skb;
+
 	mutex_lock(&rx_queue_mutex);
-	while (skb->len >= NLMSG_SPACE(0)) {
-		int err;
-		uint32_t rlen;
-		struct nlmsghdr	*nlh;
-		struct iscsi_uevent *ev;
-
-		nlh = nlmsg_hdr(skb);
-		if (nlh->nlmsg_len < sizeof(*nlh) ||
-		    skb->len < nlh->nlmsg_len) {
-			break;
+	while ((skb = skb_dequeue(&sk->sk_receive_queue)) != NULL) {
+		if (NETLINK_CREDS(skb)->uid) {
+			skb_pull(skb, skb->len);
+			goto free_skb;
 		}
 
-		ev = NLMSG_DATA(nlh);
-		rlen = NLMSG_ALIGN(nlh->nlmsg_len);
-		if (rlen > skb->len)
-			rlen = skb->len;
+		while (skb->len >= NLMSG_SPACE(0)) {
+			int err;
+			uint32_t rlen;
+			struct nlmsghdr	*nlh;
+			struct iscsi_uevent *ev;
 
-		err = iscsi_if_recv_msg(skb, nlh);
-		if (err) {
-			ev->type = ISCSI_KEVENT_IF_ERROR;
-			ev->iferror = err;
-		}
-		do {
-			/*
-			 * special case for GET_STATS:
-			 * on success - sending reply and stats from
-			 * inside of if_recv_msg(),
-			 * on error - fall through.
-			 */
-			if (ev->type == ISCSI_UEVENT_GET_STATS && !err)
+			nlh = nlmsg_hdr(skb);
+			if (nlh->nlmsg_len < sizeof(*nlh) ||
+			    skb->len < nlh->nlmsg_len) {
 				break;
-			err = iscsi_if_send_reply(
-				NETLINK_CREDS(skb)->pid, nlh->nlmsg_seq,
-				nlh->nlmsg_type, 0, 0, ev, sizeof(*ev));
-		} while (err < 0 && err != -ECONNREFUSED);
-		skb_pull(skb, rlen);
+			}
+
+			ev = NLMSG_DATA(nlh);
+			rlen = NLMSG_ALIGN(nlh->nlmsg_len);
+			if (rlen > skb->len)
+				rlen = skb->len;
+
+			err = iscsi_if_recv_msg(skb, nlh);
+			if (err) {
+				ev->type = ISCSI_KEVENT_IF_ERROR;
+				ev->iferror = err;
+			}
+			do {
+				/*
+				 * special case for GET_STATS:
+				 * on success - sending reply and stats from
+				 * inside of if_recv_msg(),
+				 * on error - fall through.
+				 */
+				if (ev->type == ISCSI_UEVENT_GET_STATS && !err)
+					break;
+				err = iscsi_if_send_reply(
+					NETLINK_CREDS(skb)->pid, nlh->nlmsg_seq,
+					nlh->nlmsg_type, 0, 0, ev, sizeof(*ev));
+			} while (err < 0 && err != -ECONNREFUSED);
+			skb_pull(skb, rlen);
+		}
+free_skb:
+		kfree_skb(skb);
 	}
 	mutex_unlock(&rx_queue_mutex);
 }
 
+#define iscsi_cdev_to_conn(_cdev) \
+	iscsi_dev_to_conn(_cdev->dev)
+
 #define ISCSI_CLASS_ATTR(_prefix,_name,_mode,_show,_store)		\
-struct device_attribute dev_attr_##_prefix##_##_name =	\
+struct class_device_attribute class_device_attr_##_prefix##_##_name =	\
 	__ATTR(_name,_mode,_show,_store)
 
 /*
@@ -1570,10 +1588,9 @@ struct device_attribute dev_attr_##_prefix##_##_name =	\
  */
 #define iscsi_conn_attr_show(param)					\
 static ssize_t								\
-show_conn_param_##param(struct device *dev, 				\
-			struct device_attribute *attr, char *buf)	\
+show_conn_param_##param(struct class_device *cdev, char *buf)		\
 {									\
-	struct iscsi_cls_conn *conn = iscsi_dev_to_conn(dev->parent);	\
+	struct iscsi_cls_conn *conn = iscsi_cdev_to_conn(cdev);		\
 	struct iscsi_transport *t = conn->transport;			\
 	return t->get_conn_param(conn, param, buf);			\
 }
@@ -1597,16 +1614,17 @@ iscsi_conn_attr(address, ISCSI_PARAM_CONN_ADDRESS);
 iscsi_conn_attr(ping_tmo, ISCSI_PARAM_PING_TMO);
 iscsi_conn_attr(recv_tmo, ISCSI_PARAM_RECV_TMO);
 
+#define iscsi_cdev_to_session(_cdev) \
+	iscsi_dev_to_session(_cdev->dev)
+
 /*
  * iSCSI session attrs
  */
 #define iscsi_session_attr_show(param, perm)				\
 static ssize_t								\
-show_session_param_##param(struct device *dev,				\
-			   struct device_attribute *attr, char *buf)	\
+show_session_param_##param(struct class_device *cdev, char *buf)	\
 {									\
-	struct iscsi_cls_session *session = 				\
-		iscsi_dev_to_session(dev->parent);			\
+	struct iscsi_cls_session *session = iscsi_cdev_to_session(cdev); \
 	struct iscsi_transport *t = session->transport;			\
 									\
 	if (perm && !capable(CAP_SYS_ADMIN))				\
@@ -1640,10 +1658,9 @@ iscsi_session_attr(ifacename, ISCSI_PARAM_IFACE_NAME, 0);
 iscsi_session_attr(initiatorname, ISCSI_PARAM_INITIATOR_NAME, 0)
 
 static ssize_t
-show_priv_session_state(struct device *dev, struct device_attribute *attr,
-			char *buf)
+show_priv_session_state(struct class_device *cdev, char *buf)
 {
-	struct iscsi_cls_session *session = iscsi_dev_to_session(dev->parent);
+	struct iscsi_cls_session *session = iscsi_cdev_to_session(cdev);
 	return sprintf(buf, "%s\n", iscsi_session_state_name(session->state));
 }
 static ISCSI_CLASS_ATTR(priv_sess, state, S_IRUGO, show_priv_session_state,
@@ -1651,11 +1668,9 @@ static ISCSI_CLASS_ATTR(priv_sess, state, S_IRUGO, show_priv_session_state,
 
 #define iscsi_priv_session_attr_show(field, format)			\
 static ssize_t								\
-show_priv_session_##field(struct device *dev, 				\
-			  struct device_attribute *attr, char *buf)	\
+show_priv_session_##field(struct class_device *cdev, char *buf)		\
 {									\
-	struct iscsi_cls_session *session = 				\
-			iscsi_dev_to_session(dev->parent);		\
+	struct iscsi_cls_session *session = iscsi_cdev_to_session(cdev);\
 	return sprintf(buf, format"\n", session->field);		\
 }
 
@@ -1670,10 +1685,9 @@ iscsi_priv_session_attr(recovery_tmo, "%d");
  */
 #define iscsi_host_attr_show(param)					\
 static ssize_t								\
-show_host_param_##param(struct device *dev, 				\
-			struct device_attribute *attr, char *buf)	\
+show_host_param_##param(struct class_device *cdev, char *buf)		\
 {									\
-	struct Scsi_Host *shost = transport_class_to_shost(dev);	\
+	struct Scsi_Host *shost = transport_class_to_shost(cdev);	\
 	struct iscsi_internal *priv = to_iscsi_internal(shost->transportt); \
 	return priv->iscsi_transport->get_host_param(shost, param, buf); \
 }
@@ -1690,7 +1704,7 @@ iscsi_host_attr(initiatorname, ISCSI_HOST_PARAM_INITIATOR_NAME);
 
 #define SETUP_PRIV_SESSION_RD_ATTR(field)				\
 do {									\
-	priv->session_attrs[count] = &dev_attr_priv_sess_##field; \
+	priv->session_attrs[count] = &class_device_attr_priv_sess_##field; \
 	count++;							\
 } while (0)
 
@@ -1698,7 +1712,7 @@ do {									\
 #define SETUP_SESSION_RD_ATTR(field, param_flag)			\
 do {									\
 	if (tt->param_mask & param_flag) {				\
-		priv->session_attrs[count] = &dev_attr_sess_##field; \
+		priv->session_attrs[count] = &class_device_attr_sess_##field; \
 		count++;						\
 	}								\
 } while (0)
@@ -1706,7 +1720,7 @@ do {									\
 #define SETUP_CONN_RD_ATTR(field, param_flag)				\
 do {									\
 	if (tt->param_mask & param_flag) {				\
-		priv->conn_attrs[count] = &dev_attr_conn_##field; \
+		priv->conn_attrs[count] = &class_device_attr_conn_##field; \
 		count++;						\
 	}								\
 } while (0)
@@ -1714,7 +1728,7 @@ do {									\
 #define SETUP_HOST_RD_ATTR(field, param_flag)				\
 do {									\
 	if (tt->host_param_mask & param_flag) {				\
-		priv->host_attrs[count] = &dev_attr_host_##field; \
+		priv->host_attrs[count] = &class_device_attr_host_##field; \
 		count++;						\
 	}								\
 } while (0)
@@ -1807,15 +1821,15 @@ iscsi_register_transport(struct iscsi_transport *tt)
 	if (!(tt->caps & CAP_DATA_PATH_OFFLOAD))
 		priv->t.create_work_queue = 1;
 
-	priv->dev.class = &iscsi_transport_class;
-	snprintf(priv->dev.bus_id, BUS_ID_SIZE, "%s", tt->name);
-	err = device_register(&priv->dev);
+	priv->cdev.class = &iscsi_transport_class;
+	snprintf(priv->cdev.class_id, BUS_ID_SIZE, "%s", tt->name);
+	err = class_device_register(&priv->cdev);
 	if (err)
 		goto free_priv;
 
-	err = sysfs_create_group(&priv->dev.kobj, &iscsi_transport_group);
+	err = sysfs_create_group(&priv->cdev.kobj, &iscsi_transport_group);
 	if (err)
-		goto unregister_dev;
+		goto unregister_cdev;
 
 	/* host parameters */
 	priv->t.host_attrs.ac.attrs = &priv->host_attrs[0];
@@ -1894,9 +1908,8 @@ iscsi_register_transport(struct iscsi_transport *tt)
 	printk(KERN_NOTICE "iscsi: registered transport (%s)\n", tt->name);
 	return &priv->t;
 
-unregister_dev:
-	device_unregister(&priv->dev);
-	return NULL;
+unregister_cdev:
+	class_device_unregister(&priv->cdev);
 free_priv:
 	kfree(priv);
 	return NULL;
@@ -1923,8 +1936,8 @@ int iscsi_unregister_transport(struct iscsi_transport *tt)
 	transport_container_unregister(&priv->session_cont);
 	transport_container_unregister(&priv->t.host_attrs);
 
-	sysfs_remove_group(&priv->dev.kobj, &iscsi_transport_group);
-	device_unregister(&priv->dev);
+	sysfs_remove_group(&priv->cdev.kobj, &iscsi_transport_group);
+	class_device_unregister(&priv->cdev);
 	mutex_unlock(&rx_queue_mutex);
 
 	return 0;
@@ -1944,13 +1957,14 @@ static __init int iscsi_transport_init(void)
 	if (err)
 		return err;
 
+#if 0
 	err = class_register(&iscsi_endpoint_class);
 	if (err)
 		goto unregister_transport_class;
-
+#endif
 	err = transport_class_register(&iscsi_host_class);
 	if (err)
-		goto unregister_endpoint_class;
+		goto unregister_transport_class;
 
 	err = transport_class_register(&iscsi_connection_class);
 	if (err)
@@ -1981,8 +1995,10 @@ unregister_conn_class:
 	transport_class_unregister(&iscsi_connection_class);
 unregister_host_class:
 	transport_class_unregister(&iscsi_host_class);
+#if 0
 unregister_endpoint_class:
 	class_unregister(&iscsi_endpoint_class);
+#endif
 unregister_transport_class:
 	class_unregister(&iscsi_transport_class);
 	return err;
@@ -1995,7 +2011,9 @@ static void __exit iscsi_transport_exit(void)
 	transport_class_unregister(&iscsi_connection_class);
 	transport_class_unregister(&iscsi_session_class);
 	transport_class_unregister(&iscsi_host_class);
+#if 0
 	class_unregister(&iscsi_endpoint_class);
+#endif
 	class_unregister(&iscsi_transport_class);
 }
 
diff --git a/scsi_transport_iscsi.h b/scsi_transport_iscsi.h
index b7652e3..3978551 100644
--- a/scsi_transport_iscsi.h
+++ b/scsi_transport_iscsi.h
@@ -28,6 +28,8 @@
 #include <linux/mutex.h>
 #include "iscsi_if.h"
 
+#include "open_iscsi_compat.h"
+
 struct scsi_transport_template;
 struct iscsi_transport;
 struct iscsi_endpoint;
@@ -175,7 +177,7 @@ struct iscsi_cls_session {
 
 	/* recovery fields */
 	int recovery_tmo;
-	struct delayed_work recovery_work;
+	struct work_struct recovery_work;
 
 	unsigned int target_id;