Make iscsid-kernel communications namespace-aware

index b9b97300e3b3..be69cea9c6f8 100644
@@ -13,6 +13,8 @@
 #include <linux/bsg-lib.h>
 #include <linux/idr.h>
 #include <net/tcp.h>
+#include <net/net_namespace.h>
+#include <net/netns/generic.h>
 #include <scsi/scsi.h>
 #include <scsi/scsi_host.h>
 #include <scsi/scsi_device.h>

@@ -1597,7 +1599,11 @@ static DECLARE_TRANSPORT_CLASS(iscsi_connection_class,
 			       NULL,
 			       NULL);
 
-static struct sock *nls;
+struct iscsi_net {
+	struct sock *nls;
+};
+
+static int iscsi_net_id __read_mostly;
 static DEFINE_MUTEX(rx_queue_mutex);
 
 static LIST_HEAD(sesslist);

@@ -2552,14 +2558,32 @@ iscsi_if_transport_lookup(struct iscsi_transport *tt)
 }
 
 static int
-iscsi_multicast_skb(struct sk_buff *skb, uint32_t group, gfp_t gfp)
+iscsi_multicast_netns(struct net *net, struct sk_buff *skb,
+		      uint32_t group, gfp_t gfp)
 {
+	struct sock *nls;
+	struct iscsi_net *isn;
+
+	isn = net_generic(net, iscsi_net_id);
+	nls = isn->nls;
 	return nlmsg_multicast(nls, skb, 0, group, gfp);
 }
 
+static int
+iscsi_multicast_skb(struct sk_buff *skb, uint32_t group, gfp_t gfp)
+{
+	return iscsi_multicast_netns(&init_net, skb, group, gfp);
+}
+
 static int
 iscsi_unicast_skb(struct sk_buff *skb, u32 portid)
 {
+	struct sock *nls;
+	struct iscsi_net *isn;
+	struct net *net = &init_net;
+
+	isn = net_generic(net, iscsi_net_id);
+	nls = isn->nls;
 	return nlmsg_unicast(nls, skb, portid);
 }
 

@@ -4937,13 +4961,42 @@ void iscsi_dbg_trace(void (*trace)(struct device *dev, struct va_format *),
 }
 EXPORT_SYMBOL_GPL(iscsi_dbg_trace);
 
-static __init int iscsi_transport_init(void)
+static int __net_init iscsi_net_init(struct net *net)
 {
-	int err;
+	struct sock *nls;
+	struct iscsi_net *isn;
 	struct netlink_kernel_cfg cfg = {
 		.groups	= 1,
 		.input	= iscsi_if_rx,
 	};
+
+	nls = netlink_kernel_create(net, NETLINK_ISCSI, &cfg);
+	if (!nls)
+		return -ENOMEM;
+	isn = net_generic(net, iscsi_net_id);
+	isn->nls = nls;
+	return 0;
+}
+
+static void __net_exit iscsi_net_exit(struct net *net)
+{
+	struct iscsi_net *isn;
+
+	isn = net_generic(net, iscsi_net_id);
+	netlink_kernel_release(isn->nls);
+	isn->nls = NULL;
+}
+
+static struct pernet_operations iscsi_net_ops = {
+	.init = iscsi_net_init,
+	.exit = iscsi_net_exit,
+	.id   = &iscsi_net_id,
+	.size = sizeof(struct iscsi_net),
+};
+
+static __init int iscsi_transport_init(void)
+{
+	int err;
 	printk(KERN_INFO "Loading iSCSI transport class v%s.\n",
 		ISCSI_TRANSPORT_VERSION);
 

@@ -4977,8 +5030,8 @@ static __init int iscsi_transport_init(void)
 	if (err)
 		goto unregister_session_class;
 
-	nls = netlink_kernel_create(&init_net, NETLINK_ISCSI, &cfg);
-	if (!nls) {
+	err = register_pernet_subsys(&iscsi_net_ops);
+	if (err) {
 		err = -ENOBUFS;
 		goto unregister_flashnode_bus;
 	}

@@ -4988,13 +5041,13 @@ static __init int iscsi_transport_init(void)
 			"iscsi_conn_cleanup");
 	if (!iscsi_conn_cleanup_workq) {
 		err = -ENOMEM;
-		goto release_nls;
+		goto unregister_pernet_subsys;
 	}
 
 	return 0;
 
-release_nls:
-	netlink_kernel_release(nls);
+unregister_pernet_subsys:
+	unregister_pernet_subsys(&iscsi_net_ops);
 unregister_flashnode_bus:
 	bus_unregister(&iscsi_flashnode_bus);
 unregister_session_class:

@@ -5015,7 +5068,7 @@ static __init int iscsi_transport_init(void)
 static void __exit iscsi_transport_exit(void)
 {
 	destroy_workqueue(iscsi_conn_cleanup_workq);
-	netlink_kernel_release(nls);
+	unregister_pernet_subsys(&iscsi_net_ops);
 	bus_unregister(&iscsi_flashnode_bus);
 	transport_class_unregister(&iscsi_connection_class);
 	transport_class_unregister(&iscsi_session_class);

index 620ae5b2d80d..d38c909b462f 100644
@@ -802,7 +802,7 @@ static struct iscsi_endpoint *iscsi_iser_ep_connect(struct Scsi_Host *shost,
 	struct iser_conn *iser_conn;
 	struct iscsi_endpoint *ep;
 
-	ep = iscsi_create_endpoint(0);
+	ep = iscsi_create_endpoint(shost, 0);
 	if (!ep)
 		return ERR_PTR(-ENOMEM);
 

index 8aeaddc93b16..c893d193f5ef 100644
@@ -1168,7 +1168,7 @@ beiscsi_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
 		return ERR_PTR(ret);
 	}
 
-	ep = iscsi_create_endpoint(sizeof(struct beiscsi_endpoint));
+	ep = iscsi_create_endpoint(shost, sizeof(struct beiscsi_endpoint));
 	if (!ep) {
 		ret = -ENOMEM;
 		return ERR_PTR(ret);

index a3c800e04a2e..ac63e93e07c6 100644
@@ -384,7 +384,7 @@ static struct iscsi_endpoint *bnx2i_alloc_ep(struct bnx2i_hba *hba)
 	struct bnx2i_endpoint *bnx2i_ep;
 	u32 ec_div;
 
-	ep = iscsi_create_endpoint(sizeof(*bnx2i_ep));
+	ep = iscsi_create_endpoint(hba->shost, sizeof(*bnx2i_ep));
 	if (!ep) {
 		printk(KERN_ERR "bnx2i: Could not allocate ep\n");
 		return NULL;

index af281e271f88..94edf8e1fb0c 100644
@@ -2926,7 +2926,7 @@ struct iscsi_endpoint *cxgbi_ep_connect(struct Scsi_Host *shost,
 		goto release_conn;
 	}
 
-	ep = iscsi_create_endpoint(sizeof(*cep));
+	ep = iscsi_create_endpoint(shost, sizeof(*cep));
 	if (!ep) {
 		err = -ENOMEM;
 		pr_info("iscsi alloc ep, OOM.\n");

index 31ec429104e2..4baf1dbb8e92 100644
@@ -931,7 +931,7 @@ qedi_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
 		return ERR_PTR(-ENXIO);
 	}
 
-	ep = iscsi_create_endpoint(sizeof(struct qedi_endpoint));
+	ep = iscsi_create_endpoint(shost, sizeof(struct qedi_endpoint));
 	if (!ep) {
 		QEDI_ERR(&qedi->dbg_ctx, "endpoint create fail\n");
 		ret = -ENOMEM;

index 005502125b27..acebf9c92c04 100644
@@ -1717,7 +1717,7 @@ qla4xxx_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
 	}
 
 	ha = iscsi_host_priv(shost);
-	ep = iscsi_create_endpoint(sizeof(struct qla_endpoint));
+	ep = iscsi_create_endpoint(shost, sizeof(struct qla_endpoint));
 	if (!ep) {
 		ret = -ENOMEM;
 		return ERR_PTR(ret);

index be69cea9c6f8..86bafdb862a5 100644
@@ -204,7 +204,7 @@ static struct attribute_group iscsi_endpoint_group = {
 };
 
 struct iscsi_endpoint *
-iscsi_create_endpoint(int dd_size)
+iscsi_create_endpoint(struct Scsi_Host *shost, int dd_size)
 {
 	struct iscsi_endpoint *ep;
 	int err, id;

@@ -230,6 +230,7 @@ iscsi_create_endpoint(int dd_size)
 
 	ep->id = id;
 	ep->dev.class = &iscsi_endpoint_class;
+	ep->dev.parent = &shost->shost_gendev;
 	dev_set_name(&ep->dev, "ep-%d", id);
 	err = device_register(&ep->dev);
         if (err)

index 34c03707fb6e..268ccaac1c05 100644
@@ -287,6 +287,9 @@ struct iscsi_cls_session {
 #define iscsi_session_to_shost(_session) \
 	dev_to_shost(_session->dev.parent)
 
+#define iscsi_endpoint_to_shost(_ep) \
+	dev_to_shost(_ep->dev.parent)
+
 #define starget_to_session(_stgt) \
 	iscsi_dev_to_session(_stgt->dev.parent)
 

@@ -462,7 +465,8 @@ extern void iscsi_put_conn(struct iscsi_cls_conn *conn);
 extern void iscsi_get_conn(struct iscsi_cls_conn *conn);
 extern void iscsi_unblock_session(struct iscsi_cls_session *session);
 extern void iscsi_block_session(struct iscsi_cls_session *session);
-extern struct iscsi_endpoint *iscsi_create_endpoint(int dd_size);
+extern struct iscsi_endpoint *iscsi_create_endpoint(struct Scsi_Host *shost,
+						    int dd_size);
 extern void iscsi_destroy_endpoint(struct iscsi_endpoint *ep);
 extern struct iscsi_endpoint *iscsi_lookup_endpoint(u64 handle);
 extern void iscsi_put_endpoint(struct iscsi_endpoint *ep);

index 41f0de2165e0..b8e451a8c76c 100644
@@ -189,8 +189,10 @@ static struct net *iscsi_host_net(struct iscsi_cls_host *ihost)
 static struct net *iscsi_endpoint_net(struct iscsi_endpoint *ep)
 {
 	struct Scsi_Host *shost = iscsi_endpoint_to_shost(ep);
-	struct iscsi_cls_host *ihost = shost->shost_data;
-
+	struct iscsi_cls_host *ihost;
+	if (!shost)
+		return &init_net;
+	ihost = shost->shost_data;
 	return iscsi_host_net(ihost);
 }
 

@@ -252,7 +254,8 @@ iscsi_create_endpoint(struct Scsi_Host *shost, int dd_size)
 
 	ep->id = id;
 	ep->dev.class = &iscsi_endpoint_class;
-	ep->dev.parent = &shost->shost_gendev;
+	if (shost)
+		ep->dev.parent = &shost->shost_gendev;
 	dev_set_name(&ep->dev, "ep-%d", id);
 	err = device_register(&ep->dev);
         if (err)

index d233618a17de..bb6734e900e0 100644
@@ -293,8 +293,9 @@ struct iscsi_cls_session {
 #define iscsi_session_to_shost(_session) \
 	dev_to_shost(_session->dev.parent)
 
+/* endpoints might not have a parent host (iSER) */
 #define iscsi_endpoint_to_shost(_ep) \
-	dev_to_shost(_ep->dev.parent)
+	dev_to_shost(&_ep->dev)
 
 extern struct net *iscsi_sess_net(struct iscsi_cls_session *session);
 

index ecb8aba1cee9..381f48a832ce 100644
@@ -646,6 +646,8 @@ __iscsi_iser_session_create(struct iscsi_endpoint *ep,
 		if (!(ib_dev->attrs.kernel_cap_flags & IBK_SG_GAPS_REG))
 			shost->virt_boundary_mask = SZ_4K - 1;
 
+		iscsi_host_set_netns(shost, ep->netns);
+
 		if (iscsi_host_add(shost, ib_dev->dev.parent)) {
 			mutex_unlock(&iser_conn->state_mutex);
 			goto free_host;

@@ -653,6 +655,7 @@ __iscsi_iser_session_create(struct iscsi_endpoint *ep,
 		mutex_unlock(&iser_conn->state_mutex);
 	} else {
 		shost->can_queue = min_t(u16, cmds_max, ISER_DEF_XMIT_CMDS_MAX);
+		iscsi_host_set_netns(shost, net);
 		if (iscsi_host_add(shost, NULL))
 			goto free_host;
 	}

@@ -1029,7 +1032,9 @@ static struct iscsi_transport iscsi_iser_transport = {
 
 	.ep_connect_net         = iscsi_iser_ep_connect,
 	.ep_poll                = iscsi_iser_ep_poll,
-	.ep_disconnect          = iscsi_iser_ep_disconnect
+	.ep_disconnect          = iscsi_iser_ep_disconnect,
+	/* net namespace */
+	.get_netns		= iscsi_host_get_netns,
 };
 
 static int __init iser_init(void)

index 17f07ca2bbb8..3150d9c7a1ee 100644
@@ -947,7 +947,7 @@ iscsi_sw_tcp_session_create(struct net *net, uint16_t cmds_max,
 	shost->can_queue = rc;
 
 	tcp_sw_host = iscsi_host_priv(shost);
-	tcp_sw_host->net_ns = net;
+	iscsi_host_set_netns(shost, net);
 
 	if (iscsi_host_add(shost, NULL))
 		goto free_host;

@@ -1068,12 +1068,6 @@ static int iscsi_sw_tcp_slave_configure(struct scsi_device *sdev)
 	return 0;
 }
 
-static struct net *iscsi_sw_tcp_netns(struct Scsi_Host *shost)
-{
-	struct iscsi_sw_tcp_host *tcp_sw_host = iscsi_host_priv(shost);
-	return tcp_sw_host->net_ns;
-}
-
 static struct scsi_host_template iscsi_sw_tcp_sht = {
 	.module			= THIS_MODULE,
 	.name			= "iSCSI Initiator over TCP/IP",

@@ -1130,7 +1124,7 @@ static struct iscsi_transport iscsi_sw_tcp_transport = {
 	/* recovery */
 	.session_recovery_timedout = iscsi_session_recovery_timedout,
 	/* net namespace */
-	.get_netns		= iscsi_sw_tcp_netns,
+	.get_netns		= iscsi_host_get_netns,
 };
 
 static int __init iscsi_sw_tcp_init(void)

index f0020cb22f59..68e14a344904 100644
@@ -53,7 +53,6 @@ struct iscsi_sw_tcp_conn {
 
 struct iscsi_sw_tcp_host {
 	struct iscsi_session	*session;
-	struct net *net_ns;
 };
 
 struct iscsi_sw_tcp_hdrbuf {

index 127f3d7f19dc..ca8856c24688 100644
@@ -3929,6 +3929,18 @@ int iscsi_host_set_param(struct Scsi_Host *shost, enum iscsi_host_param param,
 }
 EXPORT_SYMBOL_GPL(iscsi_host_set_param);
 
+void iscsi_host_set_netns(struct Scsi_Host *shost, struct net *netns) {
+	struct iscsi_host *ihost = shost_priv(shost);
+	ihost->net_ns = netns;
+}
+EXPORT_SYMBOL_GPL(iscsi_host_set_netns);
+
+struct net *iscsi_host_get_netns(struct Scsi_Host *shost) {
+	struct iscsi_host *ihost = shost_priv(shost);
+	return ihost->net_ns;
+}
+EXPORT_SYMBOL_GPL(iscsi_host_get_netns);
+
 MODULE_AUTHOR("Mike Christie");
 MODULE_DESCRIPTION("iSCSI library functions");
 MODULE_LICENSE("GPL");

index e39fb0736ade..acd868b5f6ef 100644
@@ -383,6 +383,7 @@ struct iscsi_host {
 	int			state;
 
 	struct workqueue_struct	*workq;
+	struct net *net_ns;
 };
 
 /*

@@ -492,6 +493,9 @@ extern void iscsi_pool_free(struct iscsi_pool *);
 extern int iscsi_pool_init(struct iscsi_pool *, int, void ***, int);
 extern int iscsi_switch_str_param(char **, char *);
 
+extern void iscsi_host_set_netns(struct Scsi_Host *, struct net *);
+extern struct net *iscsi_host_get_netns(struct Scsi_Host *);
+
 /*
  * inline functions to deal with padding.
  */

index 49fbfeb49b34..ecb8aba1cee9 100644
@@ -813,7 +813,7 @@ static int iscsi_iser_get_ep_param(struct iscsi_endpoint *ep,
  * Return: iscsi_endpoint created by iscsi layer or ERR_PTR(error)
  *         if fails.
  */
-static struct iscsi_endpoint *iscsi_iser_ep_connect(struct Scsi_Host *shost,
+static struct iscsi_endpoint *iscsi_iser_ep_connect(struct net *net,
 						    struct sockaddr *dst_addr,
 						    int non_blocking)
 {

@@ -821,7 +821,7 @@ static struct iscsi_endpoint *iscsi_iser_ep_connect(struct Scsi_Host *shost,
 	struct iser_conn *iser_conn;
 	struct iscsi_endpoint *ep;
 
-	ep = iscsi_create_endpoint(shost, 0);
+	ep = iscsi_create_endpoint_net(net, 0);
 	if (!ep)
 		return ERR_PTR(-ENOMEM);
 

@@ -1027,7 +1027,7 @@ static struct iscsi_transport iscsi_iser_transport = {
 	/* recovery */
 	.session_recovery_timedout = iscsi_session_recovery_timedout,
 
-	.ep_connect             = iscsi_iser_ep_connect,
+	.ep_connect_net         = iscsi_iser_ep_connect,
 	.ep_poll                = iscsi_iser_ep_poll,
 	.ep_disconnect          = iscsi_iser_ep_disconnect
 };

index b8e451a8c76c..d41b4c1ad611 100644
@@ -190,6 +190,9 @@ static struct net *iscsi_endpoint_net(struct iscsi_endpoint *ep)
 {
 	struct Scsi_Host *shost = iscsi_endpoint_to_shost(ep);
 	struct iscsi_cls_host *ihost;
+
+	if (ep->netns)
+		return ep->netns;
 	if (!shost)
 		return &init_net;
 	ihost = shost->shost_data;

@@ -228,7 +231,7 @@ static struct attribute_group iscsi_endpoint_group = {
 };
 
 struct iscsi_endpoint *
-iscsi_create_endpoint(struct Scsi_Host *shost, int dd_size)
+__iscsi_create_endpoint(struct Scsi_Host *shost, int dd_size, struct net *net)
 {
 	struct iscsi_endpoint *ep;
 	int err, id;

@@ -256,6 +259,8 @@ iscsi_create_endpoint(struct Scsi_Host *shost, int dd_size)
 	ep->dev.class = &iscsi_endpoint_class;
 	if (shost)
 		ep->dev.parent = &shost->shost_gendev;
+	if (net)
+		ep->netns = net;
 	dev_set_name(&ep->dev, "ep-%d", id);
 	err = device_register(&ep->dev);
         if (err)

@@ -283,8 +288,21 @@ iscsi_create_endpoint(struct Scsi_Host *shost, int dd_size)
 	kfree(ep);
 	return NULL;
 }
+
+struct iscsi_endpoint *
+iscsi_create_endpoint(struct Scsi_Host *shost, int dd_size) {
+	return __iscsi_create_endpoint(shost, dd_size, NULL);
+}
+
 EXPORT_SYMBOL_GPL(iscsi_create_endpoint);
 
+struct iscsi_endpoint *
+iscsi_create_endpoint_net(struct net *net, int dd_size) {
+	return __iscsi_create_endpoint(NULL, dd_size, net);
+}
+
+EXPORT_SYMBOL_GPL(iscsi_create_endpoint_net);
+
 void iscsi_destroy_endpoint(struct iscsi_endpoint *ep)
 {
 	sysfs_remove_group(&ep->dev.kobj, &iscsi_endpoint_group);

@@ -3279,10 +3297,10 @@ static int iscsi_if_ep_connect(struct net *net,
 	struct Scsi_Host *shost = NULL;
 	int non_blocking, err = 0;
 
-	if (!transport->ep_connect)
-		return -EINVAL;
-
 	if (msg_type == ISCSI_UEVENT_TRANSPORT_EP_CONNECT_THROUGH_HOST) {
+		if (!transport->ep_connect)
+			return -EINVAL;
+
 		shost = iscsi_host_lookup(net,
 					ev->u.ep_connect_through_host.host_no);
 		if (!shost) {

@@ -3292,11 +3310,17 @@ static int iscsi_if_ep_connect(struct net *net,
 			return -ENODEV;
 		}
 		non_blocking = ev->u.ep_connect_through_host.non_blocking;
-	} else
+		dst_addr = (struct sockaddr *)((char*)ev + sizeof(*ev));
+		ep = transport->ep_connect(shost, dst_addr, non_blocking);
+	} else {
+		if (!transport->ep_connect_net)
+			return -EINVAL;
+
 		non_blocking = ev->u.ep_connect.non_blocking;
+		dst_addr = (struct sockaddr *)((char*)ev + sizeof(*ev));
+		ep = transport->ep_connect_net(net, dst_addr, non_blocking);
+	}
 
-	dst_addr = (struct sockaddr *)((char*)ev + sizeof(*ev));
-	ep = transport->ep_connect(shost, dst_addr, non_blocking);
 	if (IS_ERR(ep)) {
 		err = PTR_ERR(ep);
 		goto release_host;

index bb6734e900e0..a540e085de8d 100644
@@ -127,6 +127,9 @@ struct iscsi_transport {
 	struct iscsi_endpoint *(*ep_connect) (struct Scsi_Host *shost,
 					      struct sockaddr *dst_addr,
 					      int non_blocking);
+	struct iscsi_endpoint *(*ep_connect_net) (struct net *net,
+					      struct sockaddr *dst_addr,
+					      int non_blocking);
 	int (*ep_poll) (struct iscsi_endpoint *ep, int timeout_ms);
 	void (*ep_disconnect) (struct iscsi_endpoint *ep);
 	int (*tgt_dscvr) (struct Scsi_Host *shost, enum iscsi_tgt_dscvr type,

@@ -321,6 +324,7 @@ struct iscsi_endpoint {
 	struct device dev;
 	int id;
 	struct iscsi_cls_conn *conn;
+	struct net *netns;		/* used if there's no parent shost */
 };
 
 struct iscsi_iface {

@@ -477,6 +481,8 @@ extern void iscsi_unblock_session(struct iscsi_cls_session *session);
 extern void iscsi_block_session(struct iscsi_cls_session *session);
 extern struct iscsi_endpoint *iscsi_create_endpoint(struct Scsi_Host *shost,
 						    int dd_size);
+extern struct iscsi_endpoint *iscsi_create_endpoint_net(struct net *net,
+						    int dd_size);
 extern void iscsi_destroy_endpoint(struct iscsi_endpoint *ep);
 extern struct iscsi_endpoint *iscsi_lookup_endpoint(struct net *net,
 						    u64 handle);

index 86bafdb862a5..2e2b291bce41 100644
@@ -181,9 +181,31 @@ static void iscsi_endpoint_release(struct device *dev)
 	kfree(ep);
 }
 
+static struct net *iscsi_host_net(struct iscsi_cls_host *ihost)
+{
+	return ihost->netns;
+}
+
+static struct net *iscsi_endpoint_net(struct iscsi_endpoint *ep)
+{
+	struct Scsi_Host *shost = iscsi_endpoint_to_shost(ep);
+	struct iscsi_cls_host *ihost = shost->shost_data;
+
+	return iscsi_host_net(ihost);
+}
+
+static const void *iscsi_endpoint_namespace(const struct device *dev)
+{
+	struct iscsi_endpoint *ep = iscsi_dev_to_endpoint(dev);
+
+	return iscsi_endpoint_net(ep);
+}
+
 static struct class iscsi_endpoint_class = {
 	.name = "iscsi_endpoint",
 	.dev_release = iscsi_endpoint_release,
+	.ns_type = &net_ns_type_operations,
+	.namespace = iscsi_endpoint_namespace,
 };
 
 static ssize_t

@@ -308,10 +330,26 @@ static void iscsi_iface_release(struct device *dev)
 	put_device(parent);
 }
 
+static struct net *iscsi_iface_net(struct iscsi_iface *iface)
+{
+	struct Scsi_Host *shost = iscsi_iface_to_shost(iface);
+	struct iscsi_cls_host *ihost = shost->shost_data;
+
+	return iscsi_host_net(ihost);
+}
+
+static const void *iscsi_iface_namespace(const struct device *dev)
+{
+	struct iscsi_iface *iface = iscsi_dev_to_iface(dev);
+
+	return iscsi_iface_net(iface);
+}
 
 static struct class iscsi_iface_class = {
 	.name = "iscsi_iface",
 	.dev_release = iscsi_iface_release,
+	.ns_type = &net_ns_type_operations,
+	.namespace = iscsi_iface_namespace,
 };
 
 #define ISCSI_IFACE_ATTR(_prefix, _name, _mode, _show, _store)	\

@@ -1565,6 +1603,7 @@ static int iscsi_setup_host(struct transport_container *tc, struct device *dev,
 
 	memset(ihost, 0, sizeof(*ihost));
 	mutex_init(&ihost->mutex);
+	ihost->netns = &init_net;
 
 	iscsi_bsg_host_add(shost, ihost);
 	/* ignore any bsg add error - we just can't do sgio */

@@ -1582,23 +1621,78 @@ static int iscsi_remove_host(struct transport_container *tc,
 	return 0;
 }
 
-static DECLARE_TRANSPORT_CLASS(iscsi_host_class,
-			       "iscsi_host",
-			       iscsi_setup_host,
-			       iscsi_remove_host,
-			       NULL);
+#define DECLARE_TRANSPORT_CLASS_NS(cls, nm, su, rm, cfg, ns, nslookup)	\
+struct transport_class cls = {						\
+	.class = {							\
+		.name = nm,						\
+		.ns_type = ns,						\
+		.namespace = nslookup,					\
+	},								\
+	.setup = su,							\
+	.remove = rm,							\
+	.configure = cfg,						\
+}
+
+static const void *iscsi_host_namespace(const struct device *dev)
+{
+	struct Scsi_Host *shost = transport_class_to_shost(dev);
+	struct iscsi_cls_host *ihost = shost->shost_data;
+
+	return iscsi_host_net(ihost);
+}
+
+static DECLARE_TRANSPORT_CLASS_NS(iscsi_host_class,
+				  "iscsi_host",
+				  iscsi_setup_host,
+				  iscsi_remove_host,
+				  NULL,
+				  &net_ns_type_operations,
+				  iscsi_host_namespace);
 
-static DECLARE_TRANSPORT_CLASS(iscsi_session_class,
-			       "iscsi_session",
-			       NULL,
-			       NULL,
-			       NULL);
+static struct net *iscsi_sess_net(struct iscsi_cls_session *cls_session)
+{
+	struct Scsi_Host *shost = iscsi_session_to_shost(cls_session);
+	struct iscsi_cls_host *ihost = shost->shost_data;
+
+	return iscsi_host_net(ihost);
+}
+
+static const void *iscsi_sess_namespace(const struct device *dev)
+{
+	struct iscsi_cls_session *cls_session = transport_class_to_session(dev);
+
+	return iscsi_sess_net(cls_session);
+}
+
+static DECLARE_TRANSPORT_CLASS_NS(iscsi_session_class,
+				  "iscsi_session",
+				  NULL,
+				  NULL,
+				  NULL,
+				  &net_ns_type_operations,
+				  iscsi_sess_namespace);
+
+static struct net *iscsi_conn_net(struct iscsi_cls_conn *cls_conn)
+{
+	struct iscsi_cls_session *cls_session = iscsi_conn_to_session(cls_conn);
+
+	return iscsi_sess_net(cls_session);
+}
+
+static const void *iscsi_conn_namespace(const struct device *dev)
+{
+	struct iscsi_cls_conn *cls_conn = transport_class_to_conn(dev);
+
+	return iscsi_conn_net(cls_conn);
+}
 
-static DECLARE_TRANSPORT_CLASS(iscsi_connection_class,
-			       "iscsi_connection",
-			       NULL,
-			       NULL,
-			       NULL);
+static DECLARE_TRANSPORT_CLASS_NS(iscsi_connection_class,
+				  "iscsi_connection",
+				  NULL,
+				  NULL,
+				  NULL,
+				  &net_ns_type_operations,
+				  iscsi_conn_namespace);
 
 struct iscsi_net {
 	struct sock *nls;

index 268ccaac1c05..af0c5a15f316 100644
@@ -298,6 +298,7 @@ struct iscsi_cls_host {
 	struct request_queue *bsg_q;
 	uint32_t port_speed;
 	uint32_t port_state;
+	struct net *netns;
 };
 
 #define iscsi_job_to_shost(_job) \

index 2e2b291bce41..230b43d34c5f 100644
@@ -2653,8 +2653,8 @@ iscsi_if_transport_lookup(struct iscsi_transport *tt)
 }
 
 static int
-iscsi_multicast_netns(struct net *net, struct sk_buff *skb,
-		      uint32_t group, gfp_t gfp)
+iscsi_multicast_skb(struct net *net, struct sk_buff *skb,
+		    uint32_t group, gfp_t gfp)
 {
 	struct sock *nls;
 	struct iscsi_net *isn;

@@ -2665,17 +2665,10 @@ iscsi_multicast_netns(struct net *net, struct sk_buff *skb,
 }
 
 static int
-iscsi_multicast_skb(struct sk_buff *skb, uint32_t group, gfp_t gfp)
-{
-	return iscsi_multicast_netns(&init_net, skb, group, gfp);
-}
-
-static int
-iscsi_unicast_skb(struct sk_buff *skb, u32 portid)
+iscsi_unicast_skb(struct net *net, struct sk_buff *skb, u32 portid)
 {
 	struct sock *nls;
 	struct iscsi_net *isn;
-	struct net *net = &init_net;
 
 	isn = net_generic(net, iscsi_net_id);
 	nls = isn->nls;

@@ -2690,6 +2683,7 @@ int iscsi_recv_pdu(struct iscsi_cls_conn *conn, struct iscsi_hdr *hdr,
 	struct iscsi_uevent *ev;
 	char *pdu;
 	struct iscsi_internal *priv;
+	struct net *net;
 	int len = nlmsg_total_size(sizeof(*ev) + sizeof(struct iscsi_hdr) +
 				   data_size);
 

@@ -2716,7 +2710,8 @@ int iscsi_recv_pdu(struct iscsi_cls_conn *conn, struct iscsi_hdr *hdr,
 	memcpy(pdu, hdr, sizeof(struct iscsi_hdr));
 	memcpy(pdu + sizeof(struct iscsi_hdr), data, data_size);
 
-	return iscsi_multicast_skb(skb, ISCSI_NL_GRP_ISCSID, GFP_ATOMIC);
+	net = iscsi_conn_net(conn);
+	return iscsi_multicast_skb(net, skb, ISCSI_NL_GRP_ISCSID, GFP_ATOMIC);
 }
 EXPORT_SYMBOL_GPL(iscsi_recv_pdu);
 

@@ -2727,6 +2722,7 @@ int iscsi_offload_mesg(struct Scsi_Host *shost,
 	struct nlmsghdr	*nlh;
 	struct sk_buff *skb;
 	struct iscsi_uevent *ev;
+	struct net *net;
 	int len = nlmsg_total_size(sizeof(*ev) + data_size);
 
 	skb = alloc_skb(len, GFP_ATOMIC);

@@ -2751,7 +2747,8 @@ int iscsi_offload_mesg(struct Scsi_Host *shost,
 
 	memcpy((char *)ev + sizeof(*ev), data, data_size);
 
-	return iscsi_multicast_skb(skb, ISCSI_NL_GRP_UIP, GFP_ATOMIC);
+	net = iscsi_host_net(shost->shost_data);
+	return iscsi_multicast_skb(net, skb, ISCSI_NL_GRP_UIP, GFP_ATOMIC);
 }
 EXPORT_SYMBOL_GPL(iscsi_offload_mesg);
 

@@ -2761,6 +2758,7 @@ void iscsi_conn_error_event(struct iscsi_cls_conn *conn, enum iscsi_err error)
 	struct sk_buff	*skb;
 	struct iscsi_uevent *ev;
 	struct iscsi_internal *priv;
+	struct net *net;
 	int len = nlmsg_total_size(sizeof(*ev));
 	unsigned long flags;
 	int state;

@@ -2808,7 +2806,8 @@ void iscsi_conn_error_event(struct iscsi_cls_conn *conn, enum iscsi_err error)
 	ev->r.connerror.cid = conn->cid;
 	ev->r.connerror.sid = iscsi_conn_get_sid(conn);
 
-	iscsi_multicast_skb(skb, ISCSI_NL_GRP_ISCSID, GFP_ATOMIC);
+	net = iscsi_conn_net(conn);
+	iscsi_multicast_skb(net, skb, ISCSI_NL_GRP_ISCSID, GFP_ATOMIC);
 
 	iscsi_cls_conn_printk(KERN_INFO, conn, "detected conn error (%d)\n",
 			      error);

@@ -2822,6 +2821,7 @@ void iscsi_conn_login_event(struct iscsi_cls_conn *conn,
 	struct sk_buff  *skb;
 	struct iscsi_uevent *ev;
 	struct iscsi_internal *priv;
+	struct net *net;
 	int len = nlmsg_total_size(sizeof(*ev));
 
 	priv = iscsi_if_transport_lookup(conn->transport);

@@ -2842,7 +2842,9 @@ void iscsi_conn_login_event(struct iscsi_cls_conn *conn,
 	ev->r.conn_login.state = state;
 	ev->r.conn_login.cid = conn->cid;
 	ev->r.conn_login.sid = iscsi_conn_get_sid(conn);
-	iscsi_multicast_skb(skb, ISCSI_NL_GRP_ISCSID, GFP_ATOMIC);
+
+	net = iscsi_conn_net(conn);
+	iscsi_multicast_skb(net, skb, ISCSI_NL_GRP_ISCSID, GFP_ATOMIC);
 
 	iscsi_cls_conn_printk(KERN_INFO, conn, "detected conn login (%d)\n",
 			      state);

@@ -2853,11 +2855,17 @@ void iscsi_post_host_event(uint32_t host_no, struct iscsi_transport *transport,
 			   enum iscsi_host_event_code code, uint32_t data_size,
 			   uint8_t *data)
 {
+	struct Scsi_Host *shost;
+	struct net *net;
 	struct nlmsghdr *nlh;
 	struct sk_buff *skb;
 	struct iscsi_uevent *ev;
 	int len = nlmsg_total_size(sizeof(*ev) + data_size);
 
+	shost = scsi_host_lookup(host_no);
+	if (!shost)
+		return;
+
 	skb = alloc_skb(len, GFP_NOIO);
 	if (!skb) {
 		printk(KERN_ERR "gracefully ignored host event (%d):%d OOM\n",

@@ -2876,7 +2884,9 @@ void iscsi_post_host_event(uint32_t host_no, struct iscsi_transport *transport,
 	if (data_size)
 		memcpy((char *)ev + sizeof(*ev), data, data_size);
 
-	iscsi_multicast_skb(skb, ISCSI_NL_GRP_ISCSID, GFP_NOIO);
+	net = iscsi_host_net(shost->shost_data);
+	scsi_host_put(shost);
+	iscsi_multicast_skb(net, skb, ISCSI_NL_GRP_ISCSID, GFP_NOIO);
 }
 EXPORT_SYMBOL_GPL(iscsi_post_host_event);
 

@@ -2884,11 +2894,17 @@ void iscsi_ping_comp_event(uint32_t host_no, struct iscsi_transport *transport,
 			   uint32_t status, uint32_t pid, uint32_t data_size,
 			   uint8_t *data)
 {
+	struct Scsi_Host *shost;
+	struct net *net;
 	struct nlmsghdr *nlh;
 	struct sk_buff *skb;
 	struct iscsi_uevent *ev;
 	int len = nlmsg_total_size(sizeof(*ev) + data_size);
 
+	shost = scsi_host_lookup(host_no);
+	if (!shost)
+		return;
+
 	skb = alloc_skb(len, GFP_NOIO);
 	if (!skb) {
 		printk(KERN_ERR "gracefully ignored ping comp: OOM\n");

@@ -2905,12 +2921,15 @@ void iscsi_ping_comp_event(uint32_t host_no, struct iscsi_transport *transport,
 	ev->r.ping_comp.data_size = data_size;
 	memcpy((char *)ev + sizeof(*ev), data, data_size);
 
-	iscsi_multicast_skb(skb, ISCSI_NL_GRP_ISCSID, GFP_NOIO);
+	net = iscsi_host_net(shost->shost_data);
+	scsi_host_put(shost);
+	iscsi_multicast_skb(net, skb, ISCSI_NL_GRP_ISCSID, GFP_NOIO);
 }
 EXPORT_SYMBOL_GPL(iscsi_ping_comp_event);
 
 static int
-iscsi_if_send_reply(u32 portid, int type, void *payload, int size)
+iscsi_if_send_reply(struct net *net, u32 portid, int type,
+		    void *payload, int size)
 {
 	struct sk_buff	*skb;
 	struct nlmsghdr	*nlh;

@@ -2924,11 +2943,11 @@ iscsi_if_send_reply(u32 portid, int type, void *payload, int size)
 
 	nlh = __nlmsg_put(skb, 0, 0, type, (len - sizeof(*nlh)), 0);
 	memcpy(nlmsg_data(nlh), payload, size);
-	return iscsi_unicast_skb(skb, portid);
+	return iscsi_unicast_skb(net, skb, portid);
 }
 
 static int
-iscsi_if_get_stats(struct iscsi_transport *transport, struct nlmsghdr *nlh)
+iscsi_if_get_stats(struct net *net, struct iscsi_transport *transport, struct nlmsghdr *nlh)
 {
 	struct iscsi_uevent *ev = nlmsg_data(nlh);
 	struct iscsi_stats *stats;

@@ -2985,7 +3004,7 @@ iscsi_if_get_stats(struct iscsi_transport *transport, struct nlmsghdr *nlh)
 		skb_trim(skbstat, NLMSG_ALIGN(actual_size));
 		nlhstat->nlmsg_len = actual_size;
 
-		err = iscsi_multicast_skb(skbstat, ISCSI_NL_GRP_ISCSID,
+		err = iscsi_multicast_skb(net, skbstat, ISCSI_NL_GRP_ISCSID,
 					  GFP_ATOMIC);
 	} while (err < 0 && err != -ECONNREFUSED);
 

@@ -3005,6 +3024,7 @@ int iscsi_session_event(struct iscsi_cls_session *session,
 	struct iscsi_uevent *ev;
 	struct sk_buff  *skb;
 	struct nlmsghdr *nlh;
+	struct net *net;
 	int rc, len = nlmsg_total_size(sizeof(*ev));
 
 	priv = iscsi_if_transport_lookup(session->transport);

@@ -3049,7 +3069,8 @@ int iscsi_session_event(struct iscsi_cls_session *session,
 	 * this will occur if the daemon is not up, so we just warn
 	 * the user and when the daemon is restarted it will handle it
 	 */
-	rc = iscsi_multicast_skb(skb, ISCSI_NL_GRP_ISCSID, GFP_KERNEL);
+	net = iscsi_sess_net(session);
+	rc = iscsi_multicast_skb(net, skb, ISCSI_NL_GRP_ISCSID, GFP_KERNEL);
 	if (rc == -ESRCH)
 		iscsi_cls_session_printk(KERN_ERR, session,
 					 "Cannot notify userspace of session "

@@ -3412,7 +3433,8 @@ iscsi_send_ping(struct iscsi_transport *transport, struct iscsi_uevent *ev)
 }
 
 static int
-iscsi_get_chap(struct iscsi_transport *transport, struct nlmsghdr *nlh)
+iscsi_get_chap(struct net *net, struct iscsi_transport *transport,
+	       struct nlmsghdr *nlh)
 {
 	struct iscsi_uevent *ev = nlmsg_data(nlh);
 	struct Scsi_Host *shost = NULL;

@@ -3471,7 +3493,7 @@ iscsi_get_chap(struct iscsi_transport *transport, struct nlmsghdr *nlh)
 		skb_trim(skbchap, NLMSG_ALIGN(actual_size));
 		nlhchap->nlmsg_len = actual_size;
 
-		err = iscsi_multicast_skb(skbchap, ISCSI_NL_GRP_ISCSID,
+		err = iscsi_multicast_skb(net, skbchap, ISCSI_NL_GRP_ISCSID,
 					  GFP_KERNEL);
 	} while (err < 0 && err != -ECONNREFUSED);
 

@@ -3818,7 +3840,8 @@ static int iscsi_logout_flashnode_sid(struct iscsi_transport *transport,
 }
 
 static int
-iscsi_get_host_stats(struct iscsi_transport *transport, struct nlmsghdr *nlh)
+iscsi_get_host_stats(struct net *net, struct iscsi_transport *transport,
+		     struct nlmsghdr *nlh)
 {
 	struct iscsi_uevent *ev = nlmsg_data(nlh);
 	struct Scsi_Host *shost = NULL;

@@ -3878,8 +3901,8 @@ iscsi_get_host_stats(struct iscsi_transport *transport, struct nlmsghdr *nlh)
 		skb_trim(skbhost_stats, NLMSG_ALIGN(actual_size));
 		nlhhost_stats->nlmsg_len = actual_size;
 
-		err = iscsi_multicast_skb(skbhost_stats, ISCSI_NL_GRP_ISCSID,
-					  GFP_KERNEL);
+		err = iscsi_multicast_skb(net, skbhost_stats,
+					  ISCSI_NL_GRP_ISCSID, GFP_KERNEL);
 	} while (err < 0 && err != -ECONNREFUSED);
 
 exit_host_stats:

@@ -4001,7 +4024,8 @@ static int iscsi_if_transport_conn(struct iscsi_transport *transport,
 }
 
 static int
-iscsi_if_recv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, uint32_t *group)
+iscsi_if_recv_msg(struct net *net, struct sk_buff *skb,
+		  struct nlmsghdr *nlh, uint32_t *group)
 {
 	int err = 0;
 	u32 portid;

@@ -4096,7 +4120,7 @@ iscsi_if_recv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, uint32_t *group)
 		err = iscsi_if_transport_conn(transport, nlh);
 		break;
 	case ISCSI_UEVENT_GET_STATS:
-		err = iscsi_if_get_stats(transport, nlh);
+		err = iscsi_if_get_stats(net, transport, nlh);
 		break;
 	case ISCSI_UEVENT_TRANSPORT_EP_CONNECT:
 	case ISCSI_UEVENT_TRANSPORT_EP_POLL:

@@ -4121,7 +4145,7 @@ iscsi_if_recv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, uint32_t *group)
 		err = iscsi_send_ping(transport, ev);
 		break;
 	case ISCSI_UEVENT_GET_CHAP:
-		err = iscsi_get_chap(transport, nlh);
+		err = iscsi_get_chap(net, transport, nlh);
 		break;
 	case ISCSI_UEVENT_DELETE_CHAP:
 		err = iscsi_delete_chap(transport, ev);

@@ -4152,7 +4176,7 @@ iscsi_if_recv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, uint32_t *group)
 				     nlmsg_attrlen(nlh, sizeof(*ev)));
 		break;
 	case ISCSI_UEVENT_GET_HOST_STATS:
-		err = iscsi_get_host_stats(transport, nlh);
+		err = iscsi_get_host_stats(net, transport, nlh);
 		break;
 	default:
 		err = -ENOSYS;

@@ -4170,6 +4194,8 @@ iscsi_if_recv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, uint32_t *group)
 static void
 iscsi_if_rx(struct sk_buff *skb)
 {
+	struct sock *sk = skb->sk;
+	struct net *net = sock_net(sk);
 	u32 portid = NETLINK_CB(skb).portid;
 
 	mutex_lock(&rx_queue_mutex);

@@ -4192,7 +4218,7 @@ iscsi_if_rx(struct sk_buff *skb)
 		if (rlen > skb->len)
 			rlen = skb->len;
 
-		err = iscsi_if_recv_msg(skb, nlh, &group);
+		err = iscsi_if_recv_msg(net, skb, nlh, &group);
 		if (err) {
 			ev->type = ISCSI_KEVENT_IF_ERROR;
 			ev->iferror = err;

@@ -4208,7 +4234,9 @@ iscsi_if_rx(struct sk_buff *skb)
 				break;
 			if (ev->type == ISCSI_UEVENT_GET_CHAP && !err)
 				break;
-			err = iscsi_if_send_reply(portid, nlh->nlmsg_type,
+			if (ev->type == ISCSI_UEVENT_GET_HOST_STATS && !err)
+				break;
+			err = iscsi_if_send_reply(net, portid, nlh->nlmsg_type,
 						  ev, sizeof(*ev));
 			if (err == -EAGAIN && --retries < 0) {
 				printk(KERN_WARNING "Send reply failed, error %d\n", err);

index 9a176ea0d866..3a068d8eca2d 100644
@@ -1734,17 +1734,16 @@ static DECLARE_TRANSPORT_CLASS_NS(iscsi_connection_class,
 
 struct iscsi_net {
 	struct sock *nls;
+	spinlock_t sesslock;
+	struct list_head sesslist;
+	spinlock_t connlock;
+	struct list_head connlist;
+	struct list_head connlist_err;
 };
 
 static int iscsi_net_id __read_mostly;
 static DEFINE_MUTEX(rx_queue_mutex);
 
-static LIST_HEAD(sesslist);
-static DEFINE_SPINLOCK(sesslock);
-static LIST_HEAD(connlist);
-static LIST_HEAD(connlist_err);
-static DEFINE_SPINLOCK(connlock);
-
 static uint32_t iscsi_conn_get_sid(struct iscsi_cls_conn *conn)
 {
 	struct iscsi_cls_session *sess = iscsi_dev_to_session(conn->dev.parent);

@@ -1759,19 +1758,18 @@ static struct iscsi_cls_session *iscsi_session_lookup(struct net *net,
 {
 	unsigned long flags;
 	struct iscsi_cls_session *sess;
-	struct net *ns;
+	struct iscsi_net *isn;
 
-	spin_lock_irqsave(&sesslock, flags);
-	list_for_each_entry(sess, &sesslist, sess_list) {
+	isn = net_generic(net, iscsi_net_id);
+
+	spin_lock_irqsave(&isn->sesslock, flags);
+	list_for_each_entry(sess, &isn->sesslist, sess_list) {
 		if (sess->sid == sid) {
-			ns = iscsi_sess_net(sess);
-			if (ns != net)
-				continue;
-			spin_unlock_irqrestore(&sesslock, flags);
+			spin_unlock_irqrestore(&isn->sesslock, flags);
 			return sess;
 		}
 	}
-	spin_unlock_irqrestore(&sesslock, flags);
+	spin_unlock_irqrestore(&isn->sesslock, flags);
 	return NULL;
 }
 

@@ -1783,19 +1781,18 @@ static struct iscsi_cls_conn *iscsi_conn_lookup(struct net *net, uint32_t sid,
 {
 	unsigned long flags;
 	struct iscsi_cls_conn *conn;
-	struct net *ns;
+	struct iscsi_net *isn;
 
-	spin_lock_irqsave(&connlock, flags);
-	list_for_each_entry(conn, &connlist, conn_list) {
+	isn = net_generic(net, iscsi_net_id);
+
+	spin_lock_irqsave(&isn->connlock, flags);
+	list_for_each_entry(conn, &isn->connlist, conn_list) {
 		if ((conn->cid == cid) && (iscsi_conn_get_sid(conn) == sid)) {
-			ns = iscsi_conn_net(conn);
-			if (ns != net)
-				continue;
-			spin_unlock_irqrestore(&connlock, flags);
+			spin_unlock_irqrestore(&isn->connlock, flags);
 			return conn;
 		}
 	}
-	spin_unlock_irqrestore(&connlock, flags);
+	spin_unlock_irqrestore(&isn->connlock, flags);
 	return NULL;
 }
 

@@ -2207,6 +2204,9 @@ EXPORT_SYMBOL_GPL(iscsi_alloc_session);
 int iscsi_add_session(struct iscsi_cls_session *session, unsigned int target_id)
 {
 	struct Scsi_Host *shost = iscsi_session_to_shost(session);
+	struct iscsi_cls_host *ihost = shost->shost_data;
+	struct net *net = iscsi_host_net(ihost);
+	struct iscsi_net *isn = net_generic(net, iscsi_net_id);
 	unsigned long flags;
 	int id = 0;
 	int err;

@@ -2250,9 +2250,9 @@ int iscsi_add_session(struct iscsi_cls_session *session, unsigned int target_id)
 		goto release_dev;
 	}
 
-	spin_lock_irqsave(&sesslock, flags);
-	list_add(&session->sess_list, &sesslist);
-	spin_unlock_irqrestore(&sesslock, flags);
+	spin_lock_irqsave(&isn->sesslock, flags);
+	list_add(&session->sess_list, &isn->sesslist);
+	spin_unlock_irqrestore(&isn->sesslock, flags);
 
 	iscsi_session_event(session, ISCSI_KEVENT_CREATE_SESSION);
 	ISCSI_DBG_TRANS_SESSION(session, "Completed session adding\n");

@@ -2322,15 +2322,17 @@ static int iscsi_iter_destroy_conn_fn(struct device *dev, void *data)
 
 void iscsi_remove_session(struct iscsi_cls_session *session)
 {
+	struct net *net = iscsi_sess_net(session);
+	struct iscsi_net *isn = net_generic(net, iscsi_net_id);
 	unsigned long flags;
 	int err;
 
 	ISCSI_DBG_TRANS_SESSION(session, "Removing session\n");
 
-	spin_lock_irqsave(&sesslock, flags);
+	spin_lock_irqsave(&isn->sesslock, flags);
 	if (!list_empty(&session->sess_list))
 		list_del(&session->sess_list);
-	spin_unlock_irqrestore(&sesslock, flags);
+	spin_unlock_irqrestore(&isn->sesslock, flags);
 
 	if (!cancel_work_sync(&session->block_work))
 		cancel_delayed_work_sync(&session->recovery_work);

@@ -2541,20 +2543,22 @@ static int iscsi_iter_force_destroy_conn_fn(struct device *dev, void *data)
 void iscsi_force_destroy_session(struct iscsi_cls_session *session)
 {
 	struct iscsi_transport *transport = session->transport;
+	struct net *net = iscsi_sess_net(session);
+	struct iscsi_net *isn = net_generic(net, iscsi_net_id);
 	unsigned long flags;
 
 	WARN_ON_ONCE(system_state == SYSTEM_RUNNING);
 
-	spin_lock_irqsave(&sesslock, flags);
+	spin_lock_irqsave(&isn->sesslock, flags);
 	if (list_empty(&session->sess_list)) {
-		spin_unlock_irqrestore(&sesslock, flags);
+		spin_unlock_irqrestore(&isn->sesslock, flags);
 		/*
 		 * Conn/ep is already freed. Session is being torn down via
 		 * async path. For shutdown we don't care about it so return.
 		 */
 		return;
 	}
-	spin_unlock_irqrestore(&sesslock, flags);
+	spin_unlock_irqrestore(&isn->sesslock, flags);
 
 	device_for_each_child(&session->dev, NULL,
 			      iscsi_iter_force_destroy_conn_fn);

@@ -2625,6 +2629,8 @@ int iscsi_add_conn(struct iscsi_cls_conn *conn)
 	int err;
 	unsigned long flags;
 	struct iscsi_cls_session *session = iscsi_dev_to_session(conn->dev.parent);
+	struct net *net = iscsi_sess_net(session);
+	struct iscsi_net *isn = net_generic(net, iscsi_net_id);
 
 	err = device_add(&conn->dev);
 	if (err) {

@@ -2640,9 +2646,9 @@ int iscsi_add_conn(struct iscsi_cls_conn *conn)
 		return err;
 	}
 
-	spin_lock_irqsave(&connlock, flags);
-	list_add(&conn->conn_list, &connlist);
-	spin_unlock_irqrestore(&connlock, flags);
+	spin_lock_irqsave(&isn->connlock, flags);
+	list_add(&conn->conn_list, &isn->connlist);
+	spin_unlock_irqrestore(&isn->connlock, flags);
 
 	return 0;
 }

@@ -2657,11 +2663,14 @@ EXPORT_SYMBOL_GPL(iscsi_add_conn);
  */
 void iscsi_remove_conn(struct iscsi_cls_conn *conn)
 {
+	struct net *net = iscsi_conn_net(conn);
+	struct iscsi_net *isn = net_generic(net, iscsi_net_id);
+
 	unsigned long flags;
 
-	spin_lock_irqsave(&connlock, flags);
+	spin_lock_irqsave(&isn->connlock, flags);
 	list_del(&conn->conn_list);
-	spin_unlock_irqrestore(&connlock, flags);
+	spin_unlock_irqrestore(&isn->connlock, flags);
 
 	transport_unregister_device(&conn->dev);
 	device_del(&conn->dev);

@@ -3432,20 +3441,21 @@ iscsi_set_path(struct net *net, struct iscsi_transport *transport,
 	return err;
 }
 
-static int iscsi_session_has_conns(int sid)
+static int iscsi_session_has_conns(struct net *net, int sid)
 {
+	struct iscsi_net *isn = net_generic(net, iscsi_net_id);
 	struct iscsi_cls_conn *conn;
 	unsigned long flags;
 	int found = 0;
 
-	spin_lock_irqsave(&connlock, flags);
-	list_for_each_entry(conn, &connlist, conn_list) {
+	spin_lock_irqsave(&isn->connlock, flags);
+	list_for_each_entry(conn, &isn->connlist, conn_list) {
 		if (iscsi_conn_get_sid(conn) == sid) {
 			found = 1;
 			break;
 		}
 	}
-	spin_unlock_irqrestore(&connlock, flags);
+	spin_unlock_irqrestore(&isn->connlock, flags);
 
 	return found;
 }

@@ -4157,7 +4167,7 @@ iscsi_if_recv_msg(struct net *net, struct sk_buff *skb,
 		session = iscsi_session_lookup(net, ev->u.d_session.sid);
 		if (!session)
 			err = -EINVAL;
-		else if (iscsi_session_has_conns(ev->u.d_session.sid))
+		else if (iscsi_session_has_conns(net, ev->u.d_session.sid))
 			err = -EBUSY;
 		else
 			transport->destroy_session(session);

@@ -4166,15 +4176,16 @@ iscsi_if_recv_msg(struct net *net, struct sk_buff *skb,
 		session = iscsi_session_lookup(net, ev->u.d_session.sid);
 		if (!session)
 			err = -EINVAL;
-		else if (iscsi_session_has_conns(ev->u.d_session.sid))
+		else if (iscsi_session_has_conns(net, ev->u.d_session.sid))
 			err = -EBUSY;
 		else {
+			struct iscsi_net *isn = net_generic(net, iscsi_net_id);
 			unsigned long flags;
 
 			/* Prevent this session from being found again */
-			spin_lock_irqsave(&sesslock, flags);
+			spin_lock_irqsave(&isn->sesslock, flags);
 			list_del_init(&session->sess_list);
-			spin_unlock_irqrestore(&sesslock, flags);
+			spin_unlock_irqrestore(&isn->sesslock, flags);
 
 			queue_work(system_unbound_wq, &session->destroy_work);
 		}

@@ -5176,6 +5187,13 @@ static int __net_init iscsi_net_init(struct net *net)
 	if (!nls)
 		return -ENOMEM;
 	isn = net_generic(net, iscsi_net_id);
+
+	INIT_LIST_HEAD(&isn->sesslist);
+	spin_lock_init(&isn->sesslock);
+	INIT_LIST_HEAD(&isn->connlist);
+	INIT_LIST_HEAD(&isn->connlist_err);
+	spin_lock_init(&isn->connlock);
+
 	isn->nls = nls;
 	return 0;
 }

index 3a068d8eca2d..8fafa8f0e0df 100644
@@ -5200,9 +5200,27 @@ static int __net_init iscsi_net_init(struct net *net)
 
 static void __net_exit iscsi_net_exit(struct net *net)
 {
+	struct iscsi_cls_session *session, *tmp;
+	struct iscsi_transport *transport;
 	struct iscsi_net *isn;
+	unsigned long flags;
+	LIST_HEAD(sessions);
 
 	isn = net_generic(net, iscsi_net_id);
+
+	/* force session destruction, there is no userspace anymore */
+	spin_lock_irqsave(&isn->sesslock, flags);
+	list_for_each_entry_safe(session, tmp, &isn->sesslist, sess_list) {
+		list_move_tail(&session->sess_list, &sessions);
+	}
+	spin_unlock_irqrestore(&isn->sesslock, flags);
+	list_for_each_entry_safe(session, tmp, &sessions, sess_list) {
+		device_for_each_child(&session->dev, NULL,
+				      iscsi_iter_force_destroy_conn_fn);
+		transport = session->transport;
+		transport->destroy_session(session);
+	}
+
 	netlink_kernel_release(isn->nls);
 	isn->nls = NULL;
 }

index 0454d94e8cf0..22e7a5c93627 100644
@@ -1069,6 +1069,11 @@ static int iscsi_sw_tcp_slave_configure(struct scsi_device *sdev)
 	return 0;
 }
 
+static struct net *iscsi_sw_tcp_netns(struct Scsi_Host *shost)
+{
+	return current->nsproxy->net_ns;
+}
+
 static struct scsi_host_template iscsi_sw_tcp_sht = {
 	.module			= THIS_MODULE,
 	.name			= "iSCSI Initiator over TCP/IP",

@@ -1124,6 +1129,8 @@ static struct iscsi_transport iscsi_sw_tcp_transport = {
 	.alloc_pdu		= iscsi_sw_tcp_pdu_alloc,
 	/* recovery */
 	.session_recovery_timedout = iscsi_session_recovery_timedout,
+	/* net namespace */
+	.get_netns		= iscsi_sw_tcp_netns,
 };
 
 static int __init iscsi_sw_tcp_init(void)

index 230b43d34c5f..996a9abfa1f5 100644
@@ -1600,10 +1600,15 @@ static int iscsi_setup_host(struct transport_container *tc, struct device *dev,
 {
 	struct Scsi_Host *shost = dev_to_shost(dev);
 	struct iscsi_cls_host *ihost = shost->shost_data;
+	struct iscsi_internal *priv = to_iscsi_internal(shost->transportt);
+	struct iscsi_transport *transport = priv->iscsi_transport;
 
 	memset(ihost, 0, sizeof(*ihost));
 	mutex_init(&ihost->mutex);
-	ihost->netns = &init_net;
+	if (transport->get_netns)
+		ihost->netns = transport->get_netns(shost);
+	else
+		ihost->netns = &init_net;
 
 	iscsi_bsg_host_add(shost, ihost);
 	/* ignore any bsg add error - we just can't do sgio */

index af0c5a15f316..f8885d0c37d8 100644
@@ -156,6 +156,7 @@ struct iscsi_transport {
 	int (*logout_flashnode_sid) (struct iscsi_cls_session *cls_sess);
 	int (*get_host_stats) (struct Scsi_Host *shost, char *buf, int len);
 	u8 (*check_protection)(struct iscsi_task *task, sector_t *sector);
+	struct net *(*get_netns)(struct Scsi_Host *shost);
 };
 
 /*

index 6865f62eb831..ca8de612d585 100644
@@ -593,20 +593,10 @@ static inline unsigned int iser_dif_prot_caps(int prot_caps)
 	return ret;
 }
 
-/**
- * iscsi_iser_session_create() - create an iscsi-iser session
- * @ep:             iscsi end-point handle
- * @cmds_max:       maximum commands in this session
- * @qdepth:         session command queue depth
- * @initial_cmdsn:  initiator command sequnce number
- *
- * Allocates and adds a scsi host, expose DIF supprot if
- * exists, and sets up an iscsi session.
- */
 static struct iscsi_cls_session *
-iscsi_iser_session_create(struct iscsi_endpoint *ep,
+__iscsi_iser_session_create(struct iscsi_endpoint *ep,
 			  uint16_t cmds_max, uint16_t qdepth,
-			  uint32_t initial_cmdsn)
+			  uint32_t initial_cmdsn, struct net *net)
 {
 	struct iscsi_cls_session *cls_session;
 	struct Scsi_Host *shost;

@@ -694,6 +684,32 @@ iscsi_iser_session_create(struct iscsi_endpoint *ep,
 	return NULL;
 }
 
+/**
+ * iscsi_iser_session_create() - create an iscsi-iser session
+ * @ep:             iscsi end-point handle
+ * @cmds_max:       maximum commands in this session
+ * @qdepth:         session command queue depth
+ * @initial_cmdsn:  initiator command sequnce number
+ *
+ * Allocates and adds a scsi host, expose DIF supprot if
+ * exists, and sets up an iscsi session.
+ */
+static struct iscsi_cls_session *
+iscsi_iser_session_create(struct iscsi_endpoint *ep,
+			  uint16_t cmds_max, uint16_t qdepth,
+			  uint32_t initial_cmdsn) {
+	return __iscsi_iser_session_create(ep, cmds_max, qdepth,
+					   initial_cmdsn, NULL);
+}
+
+static struct iscsi_cls_session *
+iscsi_iser_unbound_session_create(struct net *net,
+				  uint16_t cmds_max, uint16_t qdepth,
+				  uint32_t initial_cmdsn) {
+	return __iscsi_iser_session_create(NULL, cmds_max, qdepth,
+					   initial_cmdsn, net);
+}
+
 static int iscsi_iser_set_param(struct iscsi_cls_conn *cls_conn,
 				enum iscsi_param param, char *buf, int buflen)
 {

@@ -983,6 +999,7 @@ static struct iscsi_transport iscsi_iser_transport = {
 	.caps                   = CAP_RECOVERY_L0 | CAP_MULTI_R2T | CAP_TEXT_NEGO,
 	/* session management */
 	.create_session         = iscsi_iser_session_create,
+	.create_unbound_session = iscsi_iser_unbound_session_create,
 	.destroy_session        = iscsi_iser_session_destroy,
 	/* connection management */
 	.create_conn            = iscsi_iser_conn_create,

index 171685011ad9..b78239f25073 100644
@@ -922,7 +922,7 @@ iscsi_sw_tcp_conn_get_stats(struct iscsi_cls_conn *cls_conn,
 }
 
 static struct iscsi_cls_session *
-iscsi_sw_tcp_session_create(struct iscsi_endpoint *ep, uint16_t cmds_max,
+iscsi_sw_tcp_session_create(struct net *net, uint16_t cmds_max,
 			    uint16_t qdepth, uint32_t initial_cmdsn)
 {
 	struct iscsi_cls_session *cls_session;

@@ -931,11 +931,6 @@ iscsi_sw_tcp_session_create(struct iscsi_endpoint *ep, uint16_t cmds_max,
 	struct Scsi_Host *shost;
 	int rc;
 
-	if (ep) {
-		printk(KERN_ERR "iscsi_tcp: invalid ep %p.\n", ep);
-		return NULL;
-	}
-
 	shost = iscsi_host_alloc(&iscsi_sw_tcp_sht,
 				 sizeof(struct iscsi_sw_tcp_host), 1);
 	if (!shost)

@@ -952,6 +947,9 @@ iscsi_sw_tcp_session_create(struct iscsi_endpoint *ep, uint16_t cmds_max,
 		goto free_host;
 	shost->can_queue = rc;
 
+	tcp_sw_host = iscsi_host_priv(shost);
+	tcp_sw_host->net_ns = net;
+
 	if (iscsi_host_add(shost, NULL))
 		goto free_host;
 

@@ -968,7 +966,6 @@ iscsi_sw_tcp_session_create(struct iscsi_endpoint *ep, uint16_t cmds_max,
 		goto remove_session;
 
 	/* We are now fully setup so expose the session to sysfs. */
-	tcp_sw_host = iscsi_host_priv(shost);
 	tcp_sw_host->session = session;
 	return cls_session;
 

@@ -1074,7 +1071,8 @@ static int iscsi_sw_tcp_slave_configure(struct scsi_device *sdev)
 
 static struct net *iscsi_sw_tcp_netns(struct Scsi_Host *shost)
 {
-	return current->nsproxy->net_ns;
+	struct iscsi_sw_tcp_host *tcp_sw_host = iscsi_host_priv(shost);
+	return tcp_sw_host->net_ns;
 }
 
 static struct scsi_host_template iscsi_sw_tcp_sht = {

@@ -1104,7 +1102,7 @@ static struct iscsi_transport iscsi_sw_tcp_transport = {
 	.caps			= CAP_RECOVERY_L0 | CAP_MULTI_R2T | CAP_HDRDGST
 				  | CAP_DATADGST,
 	/* session management */
-	.create_session		= iscsi_sw_tcp_session_create,
+	.create_unbound_session	= iscsi_sw_tcp_session_create,
 	.destroy_session	= iscsi_sw_tcp_session_destroy,
 	/* connection management */
 	.create_conn		= iscsi_sw_tcp_conn_create,

index 68e14a344904..f0020cb22f59 100644
@@ -53,6 +53,7 @@ struct iscsi_sw_tcp_conn {
 
 struct iscsi_sw_tcp_host {
 	struct iscsi_session	*session;
+	struct net *net_ns;
 };
 
 struct iscsi_sw_tcp_hdrbuf {

index 8fafa8f0e0df..4d346e79468e 100644
@@ -3144,14 +3144,21 @@ static int
 iscsi_if_create_session(struct iscsi_internal *priv, struct iscsi_endpoint *ep,
 			struct iscsi_uevent *ev, pid_t pid,
 			uint32_t initial_cmdsn,	uint16_t cmds_max,
-			uint16_t queue_depth)
+			uint16_t queue_depth, struct net *net)
 {
 	struct iscsi_transport *transport = priv->iscsi_transport;
 	struct iscsi_cls_session *session;
 	struct Scsi_Host *shost;
 
-	session = transport->create_session(ep, cmds_max, queue_depth,
-					    initial_cmdsn);
+	if (ep) {
+		session = transport->create_session(ep, cmds_max, queue_depth,
+						    initial_cmdsn);
+	} else {
+		session = transport->create_unbound_session(net, cmds_max,
+							    queue_depth,
+							    initial_cmdsn);
+	}
+
 	if (!session)
 		return -ENOMEM;
 

@@ -4145,7 +4152,7 @@ iscsi_if_recv_msg(struct net *net, struct sk_buff *skb,
 					      portid,
 					      ev->u.c_session.initial_cmdsn,
 					      ev->u.c_session.cmds_max,
-					      ev->u.c_session.queue_depth);
+					      ev->u.c_session.queue_depth, net);
 		break;
 	/* MARK */
 	case ISCSI_UEVENT_CREATE_BOUND_SESSION:

@@ -4160,7 +4167,7 @@ iscsi_if_recv_msg(struct net *net, struct sk_buff *skb,
 					portid,
 					ev->u.c_bound_session.initial_cmdsn,
 					ev->u.c_bound_session.cmds_max,
-					ev->u.c_bound_session.queue_depth);
+					ev->u.c_bound_session.queue_depth, net);
 		iscsi_put_endpoint(ep);
 		break;
 	case ISCSI_UEVENT_DESTROY_SESSION:

index 0c3fd690ecf8..4d8a3d770bed 100644
@@ -79,6 +79,9 @@ struct iscsi_transport {
 	struct iscsi_cls_session *(*create_session) (struct iscsi_endpoint *ep,
 					uint16_t cmds_max, uint16_t qdepth,
 					uint32_t sn);
+	struct iscsi_cls_session *(*create_unbound_session) (struct net *net,
+					uint16_t cmds_max, uint16_t qdepth,
+					uint32_t sn);
 	void (*destroy_session) (struct iscsi_cls_session *session);
 	struct iscsi_cls_conn *(*create_conn) (struct iscsi_cls_session *sess,
 				uint32_t cid);

index d38c909b462f..348bafb55e51 100644
@@ -456,15 +456,18 @@ static int iscsi_iser_conn_bind(struct iscsi_cls_session *cls_session,
 	struct iscsi_conn *conn = cls_conn->dd_data;
 	struct iser_conn *iser_conn;
 	struct iscsi_endpoint *ep;
+	struct net *net;
 	int error;
 
 	error = iscsi_conn_bind(cls_session, cls_conn, is_leading);
 	if (error)
 		return error;
 
+
 	/* the transport ep handle comes from user space so it must be
 	 * verified against the global ib connections list */
-	ep = iscsi_lookup_endpoint(transport_eph);
+	net = iscsi_sess_net(cls_session);
+	ep = iscsi_lookup_endpoint(net, transport_eph);
 	if (!ep) {
 		iser_err("can't bind eph %llx\n",
 			 (unsigned long long)transport_eph);

index c893d193f5ef..10329ed6a9a8 100644
@@ -183,8 +183,10 @@ int beiscsi_conn_bind(struct iscsi_cls_session *cls_session,
 	struct iscsi_endpoint *ep;
 	uint16_t cri_index;
 	int rc = 0;
+	struct net *net;
 
-	ep = iscsi_lookup_endpoint(transport_fd);
+	net = iscsi_sess_net(cls_session);
+	ep = iscsi_lookup_endpoint(net, transport_fd);
 	if (!ep)
 		return -EINVAL;
 

index ac63e93e07c6..e889c5585c87 100644
@@ -1411,9 +1411,11 @@ static int bnx2i_conn_bind(struct iscsi_cls_session *cls_session,
 	struct bnx2i_hba *hba = iscsi_host_priv(shost);
 	struct bnx2i_endpoint *bnx2i_ep;
 	struct iscsi_endpoint *ep;
+	struct net *net;
 	int ret_code;
 
-	ep = iscsi_lookup_endpoint(transport_fd);
+	net = iscsi_sess_net(cls_session);
+	ep = iscsi_lookup_endpoint(net, transport_fd);
 	if (!ep)
 		return -EINVAL;
 	/*

index 94edf8e1fb0c..b492b57dbb2a 100644
@@ -2676,9 +2676,11 @@ int cxgbi_bind_conn(struct iscsi_cls_session *cls_session,
 	struct iscsi_endpoint *ep;
 	struct cxgbi_endpoint *cep;
 	struct cxgbi_sock *csk;
+	struct net *net;
 	int err;
 
-	ep = iscsi_lookup_endpoint(transport_eph);
+	net = iscsi_sess_net(cls_session);
+	ep = iscsi_lookup_endpoint(net, transport_eph);
 	if (!ep)
 		return -EINVAL;
 

index 4baf1dbb8e92..fc3406e6f82c 100644
@@ -389,8 +389,10 @@ static int qedi_conn_bind(struct iscsi_cls_session *cls_session,
 	struct qedi_endpoint *qedi_ep;
 	struct iscsi_endpoint *ep;
 	int rc = 0;
+	struct net *net;
 
-	ep = iscsi_lookup_endpoint(transport_fd);
+	net = iscsi_sess_net(cls_session);
+	ep = iscsi_lookup_endpoint(net, transport_fd);
 	if (!ep)
 		return -EINVAL;
 

index acebf9c92c04..390b89bdec8f 100644
@@ -3217,6 +3217,7 @@ static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
 	struct ddb_entry *ddb_entry;
 	struct scsi_qla_host *ha;
 	struct iscsi_session *sess;
+	struct net *net;
 
 	sess = cls_session->dd_data;
 	ddb_entry = sess->dd_data;

@@ -3225,11 +3226,12 @@ static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
 	DEBUG2(ql4_printk(KERN_INFO, ha, "%s: sid = %d, cid = %d\n", __func__,
 			  cls_session->sid, cls_conn->cid));
 
-	if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
-		return -EINVAL;
-	ep = iscsi_lookup_endpoint(transport_fd);
+	net = iscsi_sess_net(cls_session);
+	ep = iscsi_lookup_endpoint(net, transport_fd);
 	if (!ep)
 		return -EINVAL;
+	if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
+		return -EINVAL;
 	conn = cls_conn->dd_data;
 	qla_conn = conn->dd_data;
 	qla_conn->qla_ep = ep->dd_data;

622 lines not on this page · raw message

index f8885d0c37d8..9ac1bc133693 100644
@@ -291,6 +291,8 @@ struct iscsi_cls_session {
 #define iscsi_endpoint_to_shost(_ep) \
 	dev_to_shost(_ep->dev.parent)
 
+extern struct net *iscsi_sess_net(struct iscsi_cls_session *session);
+
 #define starget_to_session(_stgt) \
 	iscsi_dev_to_session(_stgt->dev.parent)
 

@@ -470,7 +472,8 @@ extern void iscsi_block_session(struct iscsi_cls_session *session);
 extern struct iscsi_endpoint *iscsi_create_endpoint(struct Scsi_Host *shost,
 						    int dd_size);
 extern void iscsi_destroy_endpoint(struct iscsi_endpoint *ep);
-extern struct iscsi_endpoint *iscsi_lookup_endpoint(u64 handle);
+extern struct iscsi_endpoint *iscsi_lookup_endpoint(struct net *net,
+						    u64 handle);
 extern void iscsi_put_endpoint(struct iscsi_endpoint *ep);
 extern int iscsi_block_scsi_eh(struct scsi_cmnd *cmd);
 extern struct iscsi_iface *iscsi_create_iface(struct Scsi_Host *shost,

index 390b89bdec8f..18e382b6be18 100644
@@ -7185,7 +7185,7 @@ static int qla4xxx_sysfs_ddb_is_non_persistent(struct device *dev, void *data)
 {
 	struct iscsi_bus_flash_session *fnode_sess;
 
-	if (!iscsi_flashnode_bus_match(dev, NULL))
+	if (!iscsi_is_flashnode_session_dev(dev))
 		return 0;
 
 	fnode_sess = iscsi_dev_to_flash_session(dev);

index 008adde4dc51..c065763b1fc6 100644
@@ -1060,6 +1060,12 @@ static const struct device_type iscsi_flashnode_sess_dev_type = {
 	.release = iscsi_flashnode_sess_release,
 };
 
+bool iscsi_is_flashnode_session_dev(struct device *dev)
+{
+	return dev->type == &iscsi_flashnode_sess_dev_type;
+}
+EXPORT_SYMBOL_GPL(iscsi_is_flashnode_session_dev);
+
 /* flash node connection attrs show */
 #define iscsi_flashnode_conn_attr_show(type, name, param)		\
 static ssize_t								\

@@ -1246,20 +1252,8 @@ static const struct device_type iscsi_flashnode_conn_dev_type = {
 	.release = iscsi_flashnode_conn_release,
 };
 
-static struct bus_type iscsi_flashnode_bus;
-
-int iscsi_flashnode_bus_match(struct device *dev,
-				     struct device_driver *drv)
-{
-	if (dev->bus == &iscsi_flashnode_bus)
-		return 1;
-	return 0;
-}
-EXPORT_SYMBOL_GPL(iscsi_flashnode_bus_match);
-
-static struct bus_type iscsi_flashnode_bus = {
+static struct class iscsi_flashnode_bus = {
 	.name = "iscsi_flashnode",
-	.match = &iscsi_flashnode_bus_match,
 };
 
 /**

@@ -1290,7 +1284,7 @@ iscsi_create_flashnode_sess(struct Scsi_Host *shost, int index,
 	fnode_sess->transport = transport;
 	fnode_sess->target_id = index;
 	fnode_sess->dev.type = &iscsi_flashnode_sess_dev_type;
-	fnode_sess->dev.bus = &iscsi_flashnode_bus;
+	fnode_sess->dev.class = &iscsi_flashnode_bus;
 	fnode_sess->dev.parent = &shost->shost_gendev;
 	dev_set_name(&fnode_sess->dev, "flashnode_sess-%u:%u",
 		     shost->host_no, index);

@@ -1338,7 +1332,7 @@ iscsi_create_flashnode_conn(struct Scsi_Host *shost,
 
 	fnode_conn->transport = transport;
 	fnode_conn->dev.type = &iscsi_flashnode_conn_dev_type;
-	fnode_conn->dev.bus = &iscsi_flashnode_bus;
+	fnode_conn->dev.class = &iscsi_flashnode_bus;
 	fnode_conn->dev.parent = &fnode_sess->dev;
 	dev_set_name(&fnode_conn->dev, "flashnode_conn-%u:%u:0",
 		     shost->host_no, fnode_sess->target_id);

@@ -1371,7 +1365,7 @@ EXPORT_SYMBOL_GPL(iscsi_create_flashnode_conn);
  */
 static int iscsi_is_flashnode_conn_dev(struct device *dev, void *data)
 {
-	return dev->bus == &iscsi_flashnode_bus;
+	return dev->type == &iscsi_flashnode_conn_dev_type;
 }
 
 static int iscsi_destroy_flashnode_conn(struct iscsi_bus_flash_conn *fnode_conn)

@@ -1385,7 +1379,7 @@ static int flashnode_match_index(struct device *dev, void *data)
 	struct iscsi_bus_flash_session *fnode_sess = NULL;
 	int ret = 0;
 
-	if (!iscsi_flashnode_bus_match(dev, NULL))
+	if (dev->type != &iscsi_flashnode_sess_dev_type)
 		goto exit_match_index;
 
 	fnode_sess = iscsi_dev_to_flash_session(dev);

@@ -1491,7 +1485,7 @@ EXPORT_SYMBOL_GPL(iscsi_destroy_flashnode_sess);
 
 static int iscsi_iter_destroy_flashnode_fn(struct device *dev, void *data)
 {
-	if (!iscsi_flashnode_bus_match(dev, NULL))
+	if (dev->type != &iscsi_flashnode_sess_dev_type)
 		return 0;
 
 	iscsi_destroy_flashnode_sess(iscsi_dev_to_flash_session(dev));

@@ -5200,7 +5194,7 @@ static __init int iscsi_transport_init(void)
 	if (err)
 		goto unregister_conn_class;
 
-	err = bus_register(&iscsi_flashnode_bus);
+	err = class_register(&iscsi_flashnode_bus);
 	if (err)
 		goto unregister_session_class;
 

@@ -5223,7 +5217,7 @@ static __init int iscsi_transport_init(void)
 unregister_pernet_subsys:
 	unregister_pernet_subsys(&iscsi_net_ops);
 unregister_flashnode_bus:
-	bus_unregister(&iscsi_flashnode_bus);
+	class_unregister(&iscsi_flashnode_bus);
 unregister_session_class:
 	transport_class_unregister(&iscsi_session_class);
 unregister_conn_class:

@@ -5243,7 +5237,7 @@ static void __exit iscsi_transport_exit(void)
 {
 	destroy_workqueue(iscsi_conn_cleanup_workq);
 	unregister_pernet_subsys(&iscsi_net_ops);
-	bus_unregister(&iscsi_flashnode_bus);
+	class_unregister(&iscsi_flashnode_bus);
 	transport_class_unregister(&iscsi_connection_class);
 	transport_class_unregister(&iscsi_session_class);
 	transport_class_unregister(&iscsi_host_class);

index 9ac1bc133693..580f06d1479b 100644
@@ -512,6 +512,8 @@ iscsi_find_flashnode_sess(struct Scsi_Host *shost, void *data,
 extern struct device *
 iscsi_find_flashnode_conn(struct iscsi_bus_flash_session *fnode_sess);
 
+extern bool iscsi_is_flashnode_session_dev(struct device *dev);
+
 extern char *
 iscsi_get_ipaddress_state_name(enum iscsi_ipaddress_state port_state);
 extern char *iscsi_get_router_state_name(enum iscsi_router_state router_state);

index 18e382b6be18..8af6847773e3 100644
@@ -168,20 +168,20 @@ static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type);
  * iSCSI Flash DDB sysfs entry points
  */
 static int
-qla4xxx_sysfs_ddb_set_param(struct iscsi_bus_flash_session *fnode_sess,
-			    struct iscsi_bus_flash_conn *fnode_conn,
+qla4xxx_sysfs_ddb_set_param(struct iscsi_flash_session *fnode_sess,
+			    struct iscsi_flash_conn *fnode_conn,
 			    void *data, int len);
 static int
-qla4xxx_sysfs_ddb_get_param(struct iscsi_bus_flash_session *fnode_sess,
+qla4xxx_sysfs_ddb_get_param(struct iscsi_flash_session *fnode_sess,
 			    int param, char *buf);
 static int qla4xxx_sysfs_ddb_add(struct Scsi_Host *shost, const char *buf,
 				 int len);
 static int
-qla4xxx_sysfs_ddb_delete(struct iscsi_bus_flash_session *fnode_sess);
-static int qla4xxx_sysfs_ddb_login(struct iscsi_bus_flash_session *fnode_sess,
-				   struct iscsi_bus_flash_conn *fnode_conn);
-static int qla4xxx_sysfs_ddb_logout(struct iscsi_bus_flash_session *fnode_sess,
-				    struct iscsi_bus_flash_conn *fnode_conn);
+qla4xxx_sysfs_ddb_delete(struct iscsi_flash_session *fnode_sess);
+static int qla4xxx_sysfs_ddb_login(struct iscsi_flash_session *fnode_sess,
+				   struct iscsi_flash_conn *fnode_conn);
+static int qla4xxx_sysfs_ddb_logout(struct iscsi_flash_session *fnode_sess,
+				    struct iscsi_flash_conn *fnode_conn);
 static int qla4xxx_sysfs_ddb_logout_sid(struct iscsi_cls_session *cls_sess);
 
 static struct qla4_8xxx_legacy_intr_set legacy_intr[] =

@@ -3494,8 +3494,8 @@ static int qla4xxx_task_xmit(struct iscsi_task *task)
 	return -ENOSYS;
 }
 
-static int qla4xxx_copy_from_fwddb_param(struct iscsi_bus_flash_session *sess,
-					 struct iscsi_bus_flash_conn *conn,
+static int qla4xxx_copy_from_fwddb_param(struct iscsi_flash_session *sess,
+					 struct iscsi_flash_conn *conn,
 					 struct dev_db_entry *fw_ddb_entry)
 {
 	unsigned long options = 0;

@@ -3636,8 +3636,8 @@ static int qla4xxx_copy_from_fwddb_param(struct iscsi_bus_flash_session *sess,
 	return rc;
 }
 
-static int qla4xxx_copy_to_fwddb_param(struct iscsi_bus_flash_session *sess,
-				       struct iscsi_bus_flash_conn *conn,
+static int qla4xxx_copy_to_fwddb_param(struct iscsi_flash_session *sess,
+				       struct iscsi_flash_conn *conn,
 				       struct dev_db_entry *fw_ddb_entry)
 {
 	uint16_t options;

@@ -7183,7 +7183,7 @@ static void qla4xxx_build_new_nt_list(struct scsi_qla_host *ha,
  **/
 static int qla4xxx_sysfs_ddb_is_non_persistent(struct device *dev, void *data)
 {
-	struct iscsi_bus_flash_session *fnode_sess;
+	struct iscsi_flash_session *fnode_sess;
 
 	if (!iscsi_is_flashnode_session_dev(dev))
 		return 0;

@@ -7213,8 +7213,8 @@ static int qla4xxx_sysfs_ddb_tgt_create(struct scsi_qla_host *ha,
 					struct dev_db_entry *fw_ddb_entry,
 					uint16_t *idx, int user)
 {
-	struct iscsi_bus_flash_session *fnode_sess = NULL;
-	struct iscsi_bus_flash_conn *fnode_conn = NULL;
+	struct iscsi_flash_session *fnode_sess = NULL;
+	struct iscsi_flash_conn *fnode_conn = NULL;
 	int rc = QLA_ERROR;
 
 	fnode_sess = iscsi_create_flashnode_sess(ha->host, *idx,

@@ -7353,8 +7353,8 @@ static int qla4xxx_sysfs_ddb_add(struct Scsi_Host *shost, const char *buf,
  * This writes the contents of target ddb buffer to Flash with a valid cookie
  * value in order to make the ddb entry persistent.
  **/
-static int  qla4xxx_sysfs_ddb_apply(struct iscsi_bus_flash_session *fnode_sess,
-				    struct iscsi_bus_flash_conn *fnode_conn)
+static int  qla4xxx_sysfs_ddb_apply(struct iscsi_flash_session *fnode_sess,
+				    struct iscsi_flash_conn *fnode_conn)
 {
 	struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
 	struct scsi_qla_host *ha = to_qla_host(shost);

@@ -7543,8 +7543,8 @@ static int qla4xxx_ddb_login_nt(struct scsi_qla_host *ha,
  *
  * This logs in to the specified target
  **/
-static int qla4xxx_sysfs_ddb_login(struct iscsi_bus_flash_session *fnode_sess,
-				   struct iscsi_bus_flash_conn *fnode_conn)
+static int qla4xxx_sysfs_ddb_login(struct iscsi_flash_session *fnode_sess,
+				   struct iscsi_flash_conn *fnode_conn)
 {
 	struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
 	struct scsi_qla_host *ha = to_qla_host(shost);

@@ -7727,8 +7727,8 @@ static int qla4xxx_sysfs_ddb_logout_sid(struct iscsi_cls_session *cls_sess)
  *
  * This performs log out from the specified target
  **/
-static int qla4xxx_sysfs_ddb_logout(struct iscsi_bus_flash_session *fnode_sess,
-				    struct iscsi_bus_flash_conn *fnode_conn)
+static int qla4xxx_sysfs_ddb_logout(struct iscsi_flash_session *fnode_sess,
+				    struct iscsi_flash_conn *fnode_conn)
 {
 	struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
 	struct scsi_qla_host *ha = to_qla_host(shost);

@@ -7837,12 +7837,12 @@ static int qla4xxx_sysfs_ddb_logout(struct iscsi_bus_flash_session *fnode_sess,
 }
 
 static int
-qla4xxx_sysfs_ddb_get_param(struct iscsi_bus_flash_session *fnode_sess,
+qla4xxx_sysfs_ddb_get_param(struct iscsi_flash_session *fnode_sess,
 			    int param, char *buf)
 {
 	struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
 	struct scsi_qla_host *ha = to_qla_host(shost);
-	struct iscsi_bus_flash_conn *fnode_conn;
+	struct iscsi_flash_conn *fnode_conn;
 	struct ql4_chap_table chap_tbl;
 	struct device *dev;
 	int parent_type;

@@ -8091,8 +8091,8 @@ qla4xxx_sysfs_ddb_get_param(struct iscsi_bus_flash_session *fnode_sess,
  * This sets the parameter of flash ddb entry and writes them to flash
  **/
 static int
-qla4xxx_sysfs_ddb_set_param(struct iscsi_bus_flash_session *fnode_sess,
-			    struct iscsi_bus_flash_conn *fnode_conn,
+qla4xxx_sysfs_ddb_set_param(struct iscsi_flash_session *fnode_sess,
+			    struct iscsi_flash_conn *fnode_conn,
 			    void *data, int len)
 {
 	struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);

@@ -8319,7 +8319,7 @@ qla4xxx_sysfs_ddb_set_param(struct iscsi_bus_flash_session *fnode_sess,
  *
  * This invalidates the flash ddb entry at the given index
  **/
-static int qla4xxx_sysfs_ddb_delete(struct iscsi_bus_flash_session *fnode_sess)
+static int qla4xxx_sysfs_ddb_delete(struct iscsi_flash_session *fnode_sess)
 {
 	struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
 	struct scsi_qla_host *ha = to_qla_host(shost);

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