kbuild: rust: keep Rust objects out of Clang LTO with inline helpersgrafted

Under `CONFIG_LTO_CLANG` + `CONFIG_RUST_INLINE_HELPERS`, one may hit
`objtool` errors such as:

    vmlinux.o: error: objtool: _R..._3Gsp4boot+0xd6a:
    can't find jump dest instruction at .text._R..._3Gsp4boot+0x1dfd

The reason is that in such builds, the Clang invocation that compiles
the combined Rust plus helpers bitcode emits LLVM bitcode (again) --
the final code generation happens in the linker's LTO step, which the
`-mllvm` trap options passed to Clang do not reach.

This, in turn, means that unreachable traps are missing, and the
impossible paths do not merely fallthrough to the next symbol, but past
the end of their own section, since LTO builds place each function in
its own section.

Thus filter `CC_FLAGS_LTO` out of the Clang invocation, so that it always
emits machine code directly, with the traps in place.

Assisted-by: LLM
Cc: Gary Guo <gary@garyguo.net>
Cc: Boqun Feng <boqun@kernel.org>
Cc: Alice Ryhl <aliceryhl@google.com>
Cc: Matthew Maurer <mmaurer@google.com>
Cc: Josh Poimboeuf <jpoimboe@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: stable@vger.kernel.org
Fixes: 3a2486cc1da5 ("kbuild: rust: provide an option to inline C helpers into Rust")
Acked-by: Gary Guo <gary@garyguo.net>
Link: https://patch.msgid.link/20260816133233.197500-2-ojeda@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>

7 files changed, 8294 insertions, 0 deletions

diff --git a/drivers/scsi/fcoe/Makefile b/drivers/scsi/fcoe/Makefile
new file mode 100644
index 000000000..1183e80a0
--- /dev/null
+++ b/drivers/scsi/fcoe/Makefile
@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+obj-$(CONFIG_FCOE) += fcoe.o
+obj-$(CONFIG_LIBFCOE) += libfcoe.o
+
+libfcoe-objs := fcoe_ctlr.o fcoe_transport.o fcoe_sysfs.o
diff --git a/drivers/scsi/fcoe/fcoe.c b/drivers/scsi/fcoe/fcoe.c
new file mode 100644
index 000000000..438ac7c3a
--- /dev/null
+++ b/drivers/scsi/fcoe/fcoe.c
@@ -0,0 +1,2806 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright(c) 2007 - 2009 Intel Corporation. All rights reserved.
+ *
+ * Maintained at www.Open-FCoE.org
+ */
+
+#include <linux/module.h>
+#include <linux/spinlock.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
+#include <linux/if_ether.h>
+#include <linux/if_vlan.h>
+#include <linux/crc32.h>
+#include <linux/slab.h>
+#include <linux/cpu.h>
+#include <linux/fs.h>
+#include <linux/sysfs.h>
+#include <linux/ctype.h>
+#include <linux/workqueue.h>
+#include <net/dcbnl.h>
+#include <net/dcbevent.h>
+#include <scsi/scsi_tcq.h>
+#include <scsi/scsicam.h>
+#include <scsi/scsi_transport.h>
+#include <scsi/scsi_transport_fc.h>
+#include <net/netdev_lock.h>
+#include <net/rtnetlink.h>
+
+#include <scsi/fc/fc_encaps.h>
+#include <scsi/fc/fc_fip.h>
+#include <scsi/fc/fc_fcoe.h>
+
+#include <scsi/libfc.h>
+#include <scsi/fc_frame.h>
+#include <scsi/libfcoe.h>
+
+#include "fcoe.h"
+
+MODULE_AUTHOR("Open-FCoE.org");
+MODULE_DESCRIPTION("FCoE");
+MODULE_LICENSE("GPL v2");
+
+/* Performance tuning parameters for fcoe */
+static unsigned int fcoe_ddp_min = 4096;
+module_param_named(ddp_min, fcoe_ddp_min, uint, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(ddp_min, "Minimum I/O size in bytes for "	\
+		 "Direct Data Placement (DDP).");
+
+unsigned int fcoe_debug_logging;
+module_param_named(debug_logging, fcoe_debug_logging, int, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(debug_logging, "a bit mask of logging levels");
+
+static unsigned int fcoe_e_d_tov = 2 * 1000;
+module_param_named(e_d_tov, fcoe_e_d_tov, int, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(e_d_tov, "E_D_TOV in ms, default 2000");
+
+static unsigned int fcoe_r_a_tov = 2 * 2 * 1000;
+module_param_named(r_a_tov, fcoe_r_a_tov, int, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(r_a_tov, "R_A_TOV in ms, default 4000");
+
+static DEFINE_MUTEX(fcoe_config_mutex);
+
+static struct workqueue_struct *fcoe_wq;
+
+/* fcoe host list */
+/* must only by accessed under the RTNL mutex */
+static LIST_HEAD(fcoe_hostlist);
+static DEFINE_PER_CPU(struct fcoe_percpu_s, fcoe_percpu);
+
+/* Function Prototypes */
+static int fcoe_reset(struct Scsi_Host *);
+static int fcoe_xmit(struct fc_lport *, struct fc_frame *);
+static int fcoe_rcv(struct sk_buff *, struct net_device *,
+		    struct packet_type *, struct net_device *);
+static void fcoe_percpu_clean(struct fc_lport *);
+static int fcoe_link_ok(struct fc_lport *);
+
+static struct fc_lport *fcoe_hostlist_lookup(const struct net_device *);
+static int fcoe_hostlist_add(const struct fc_lport *);
+static void fcoe_hostlist_del(const struct fc_lport *);
+
+static int fcoe_device_notification(struct notifier_block *, ulong, void *);
+static void fcoe_dev_setup(void);
+static void fcoe_dev_cleanup(void);
+static struct fcoe_interface
+*fcoe_hostlist_lookup_port(const struct net_device *);
+
+static int fcoe_fip_recv(struct sk_buff *, struct net_device *,
+			 struct packet_type *, struct net_device *);
+static int fcoe_fip_vlan_recv(struct sk_buff *, struct net_device *,
+			      struct packet_type *, struct net_device *);
+
+static void fcoe_fip_send(struct fcoe_ctlr *, struct sk_buff *);
+static void fcoe_update_src_mac(struct fc_lport *, u8 *);
+static u8 *fcoe_get_src_mac(struct fc_lport *);
+static void fcoe_destroy_work(struct work_struct *);
+
+static int fcoe_ddp_setup(struct fc_lport *, u16, struct scatterlist *,
+			  unsigned int);
+static int fcoe_ddp_done(struct fc_lport *, u16);
+static int fcoe_ddp_target(struct fc_lport *, u16, struct scatterlist *,
+			   unsigned int);
+static int fcoe_dcb_app_notification(struct notifier_block *notifier,
+				     ulong event, void *ptr);
+
+static bool fcoe_match(struct net_device *netdev);
+static int fcoe_create(struct net_device *netdev, enum fip_mode fip_mode);
+static int fcoe_destroy(struct net_device *netdev);
+static int fcoe_enable(struct net_device *netdev);
+static int fcoe_disable(struct net_device *netdev);
+
+/* fcoe_syfs control interface handlers */
+static int fcoe_ctlr_alloc(struct net_device *netdev);
+static int fcoe_ctlr_enabled(struct fcoe_ctlr_device *cdev);
+static void fcoe_ctlr_mode(struct fcoe_ctlr_device *ctlr_dev);
+
+static struct fc_seq *fcoe_elsct_send(struct fc_lport *,
+				      u32 did, struct fc_frame *,
+				      unsigned int op,
+				      void (*resp)(struct fc_seq *,
+						   struct fc_frame *,
+						   void *),
+				      void *, u32 timeout);
+static void fcoe_recv_frame(struct sk_buff *skb);
+
+/* notification function for packets from net device */
+static struct notifier_block fcoe_notifier = {
+	.notifier_call = fcoe_device_notification,
+};
+
+/* notification function for DCB events */
+static struct notifier_block dcb_notifier = {
+	.notifier_call = fcoe_dcb_app_notification,
+};
+
+static struct scsi_transport_template *fcoe_nport_scsi_transport;
+static struct scsi_transport_template *fcoe_vport_scsi_transport;
+
+static int fcoe_vport_destroy(struct fc_vport *);
+static int fcoe_vport_create(struct fc_vport *, bool disabled);
+static int fcoe_vport_disable(struct fc_vport *, bool disable);
+static void fcoe_set_vport_symbolic_name(struct fc_vport *);
+static void fcoe_set_port_id(struct fc_lport *, u32, struct fc_frame *);
+static void fcoe_fcf_get_vlan_id(struct fcoe_fcf_device *);
+static void fcoe_vport_remove(struct fc_lport *);
+
+static struct fcoe_sysfs_function_template fcoe_sysfs_templ = {
+	.set_fcoe_ctlr_mode = fcoe_ctlr_mode,
+	.set_fcoe_ctlr_enabled = fcoe_ctlr_enabled,
+	.get_fcoe_ctlr_link_fail = fcoe_ctlr_get_lesb,
+	.get_fcoe_ctlr_vlink_fail = fcoe_ctlr_get_lesb,
+	.get_fcoe_ctlr_miss_fka = fcoe_ctlr_get_lesb,
+	.get_fcoe_ctlr_symb_err = fcoe_ctlr_get_lesb,
+	.get_fcoe_ctlr_err_block = fcoe_ctlr_get_lesb,
+	.get_fcoe_ctlr_fcs_error = fcoe_ctlr_get_lesb,
+
+	.get_fcoe_fcf_selected = fcoe_fcf_get_selected,
+	.get_fcoe_fcf_vlan_id = fcoe_fcf_get_vlan_id,
+};
+
+static struct libfc_function_template fcoe_libfc_fcn_templ = {
+	.frame_send = fcoe_xmit,
+	.ddp_setup = fcoe_ddp_setup,
+	.ddp_done = fcoe_ddp_done,
+	.ddp_target = fcoe_ddp_target,
+	.elsct_send = fcoe_elsct_send,
+	.get_lesb = fcoe_get_lesb,
+	.lport_set_port_id = fcoe_set_port_id,
+};
+
+static struct fc_function_template fcoe_nport_fc_functions = {
+	.show_host_node_name = 1,
+	.show_host_port_name = 1,
+	.show_host_supported_classes = 1,
+	.show_host_supported_fc4s = 1,
+	.show_host_active_fc4s = 1,
+	.show_host_maxframe_size = 1,
+	.show_host_serial_number = 1,
+	.show_host_manufacturer = 1,
+	.show_host_model = 1,
+	.show_host_model_description = 1,
+	.show_host_hardware_version = 1,
+	.show_host_driver_version = 1,
+	.show_host_firmware_version = 1,
+	.show_host_optionrom_version = 1,
+
+	.show_host_port_id = 1,
+	.show_host_supported_speeds = 1,
+	.get_host_speed = fc_get_host_speed,
+	.show_host_speed = 1,
+	.show_host_port_type = 1,
+	.get_host_port_state = fc_get_host_port_state,
+	.show_host_port_state = 1,
+	.show_host_symbolic_name = 1,
+
+	.dd_fcrport_size = sizeof(struct fc_rport_libfc_priv),
+	.show_rport_maxframe_size = 1,
+	.show_rport_supported_classes = 1,
+
+	.show_host_fabric_name = 1,
+	.show_starget_node_name = 1,
+	.show_starget_port_name = 1,
+	.show_starget_port_id = 1,
+	.set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
+	.show_rport_dev_loss_tmo = 1,
+	.get_fc_host_stats = fc_get_host_stats,
+	.issue_fc_host_lip = fcoe_reset,
+
+	.terminate_rport_io = fc_rport_terminate_io,
+
+	.vport_create = fcoe_vport_create,
+	.vport_delete = fcoe_vport_destroy,
+	.vport_disable = fcoe_vport_disable,
+	.set_vport_symbolic_name = fcoe_set_vport_symbolic_name,
+
+	.bsg_request = fc_lport_bsg_request,
+};
+
+static struct fc_function_template fcoe_vport_fc_functions = {
+	.show_host_node_name = 1,
+	.show_host_port_name = 1,
+	.show_host_supported_classes = 1,
+	.show_host_supported_fc4s = 1,
+	.show_host_active_fc4s = 1,
+	.show_host_maxframe_size = 1,
+	.show_host_serial_number = 1,
+	.show_host_manufacturer = 1,
+	.show_host_model = 1,
+	.show_host_model_description = 1,
+	.show_host_hardware_version = 1,
+	.show_host_driver_version = 1,
+	.show_host_firmware_version = 1,
+	.show_host_optionrom_version = 1,
+
+	.show_host_port_id = 1,
+	.show_host_supported_speeds = 1,
+	.get_host_speed = fc_get_host_speed,
+	.show_host_speed = 1,
+	.show_host_port_type = 1,
+	.get_host_port_state = fc_get_host_port_state,
+	.show_host_port_state = 1,
+	.show_host_symbolic_name = 1,
+
+	.dd_fcrport_size = sizeof(struct fc_rport_libfc_priv),
+	.show_rport_maxframe_size = 1,
+	.show_rport_supported_classes = 1,
+
+	.show_host_fabric_name = 1,
+	.show_starget_node_name = 1,
+	.show_starget_port_name = 1,
+	.show_starget_port_id = 1,
+	.set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
+	.show_rport_dev_loss_tmo = 1,
+	.get_fc_host_stats = fc_get_host_stats,
+	.issue_fc_host_lip = fcoe_reset,
+
+	.terminate_rport_io = fc_rport_terminate_io,
+
+	.bsg_request = fc_lport_bsg_request,
+};
+
+static const struct scsi_host_template fcoe_shost_template = {
+	.module = THIS_MODULE,
+	.name = "FCoE Driver",
+	.proc_name = FCOE_NAME,
+	.queuecommand = fc_queuecommand,
+	.eh_timed_out = fc_eh_timed_out,
+	.eh_abort_handler = fc_eh_abort,
+	.eh_device_reset_handler = fc_eh_device_reset,
+	.eh_host_reset_handler = fc_eh_host_reset,
+	.sdev_init = fc_sdev_init,
+	.change_queue_depth = scsi_change_queue_depth,
+	.this_id = -1,
+	.cmd_per_lun = 3,
+	.can_queue = FCOE_MAX_OUTSTANDING_COMMANDS,
+	.sg_tablesize = SG_ALL,
+	.max_sectors = 0xffff,
+	.track_queue_depth = 1,
+	.cmd_size = sizeof(struct libfc_cmd_priv),
+};
+
+/**
+ * fcoe_interface_setup() - Setup a FCoE interface
+ * @fcoe:   The new FCoE interface
+ * @netdev: The net device that the fcoe interface is on
+ *
+ * Returns : 0 for success
+ * Locking: must be called with the RTNL mutex held
+ */
+static int fcoe_interface_setup(struct fcoe_interface *fcoe,
+				struct net_device *netdev)
+{
+	struct fcoe_ctlr *fip = fcoe_to_ctlr(fcoe);
+	struct netdev_hw_addr *ha;
+	struct net_device *real_dev;
+	static const u8 flogi_maddr[ETH_ALEN] = FC_FCOE_FLOGI_MAC;
+	const struct net_device_ops *ops;
+
+	fcoe->netdev = netdev;
+
+	/* Let LLD initialize for FCoE */
+	ops = netdev->netdev_ops;
+	if (ops->ndo_fcoe_enable) {
+		if (ops->ndo_fcoe_enable(netdev))
+			FCOE_NETDEV_DBG(netdev, "Failed to enable FCoE"
+					" specific feature for LLD.\n");
+	}
+
+	/* Do not support for bonding device */
+	if (netif_is_bond_master(netdev)) {
+		FCOE_NETDEV_DBG(netdev, "Bonded interfaces not supported\n");
+		return -EOPNOTSUPP;
+	}
+
+	/* look for SAN MAC address, if multiple SAN MACs exist, only
+	 * use the first one for SPMA */
+	real_dev = is_vlan_dev(netdev) ? vlan_dev_real_dev(netdev) : netdev;
+	fcoe->realdev = real_dev;
+	rcu_read_lock();
+	for_each_dev_addr(real_dev, ha) {
+		if ((ha->type == NETDEV_HW_ADDR_T_SAN) &&
+		    (is_valid_ether_addr(ha->addr))) {
+			memcpy(fip->ctl_src_addr, ha->addr, ETH_ALEN);
+			fip->spma = 1;
+			break;
+		}
+	}
+	rcu_read_unlock();
+
+	/* setup Source Mac Address */
+	if (!fip->spma)
+		memcpy(fip->ctl_src_addr, netdev->dev_addr, netdev->addr_len);
+
+	/*
+	 * Add FCoE MAC address as second unicast MAC address
+	 * or enter promiscuous mode if not capable of listening
+	 * for multiple unicast MACs.
+	 */
+	dev_uc_add(netdev, flogi_maddr);
+	if (fip->spma)
+		dev_uc_add(netdev, fip->ctl_src_addr);
+	if (fip->mode == FIP_MODE_VN2VN) {
+		dev_mc_add(netdev, FIP_ALL_VN2VN_MACS);
+		dev_mc_add(netdev, FIP_ALL_P2P_MACS);
+	} else
+		dev_mc_add(netdev, FIP_ALL_ENODE_MACS);
+
+	/*
+	 * setup the receive function from ethernet driver
+	 * on the ethertype for the given device
+	 */
+	fcoe->fcoe_packet_type.func = fcoe_rcv;
+	fcoe->fcoe_packet_type.type = htons(ETH_P_FCOE);
+	fcoe->fcoe_packet_type.dev = netdev;
+	dev_add_pack(&fcoe->fcoe_packet_type);
+
+	fcoe->fip_packet_type.func = fcoe_fip_recv;
+	fcoe->fip_packet_type.type = htons(ETH_P_FIP);
+	fcoe->fip_packet_type.dev = netdev;
+	dev_add_pack(&fcoe->fip_packet_type);
+
+	if (netdev != real_dev) {
+		fcoe->fip_vlan_packet_type.func = fcoe_fip_vlan_recv;
+		fcoe->fip_vlan_packet_type.type = htons(ETH_P_FIP);
+		fcoe->fip_vlan_packet_type.dev = real_dev;
+		dev_add_pack(&fcoe->fip_vlan_packet_type);
+	}
+	return 0;
+}
+
+/**
+ * fcoe_interface_create() - Create a FCoE interface on a net device
+ * @netdev: The net device to create the FCoE interface on
+ * @fip_mode: The mode to use for FIP
+ *
+ * Returns: pointer to a struct fcoe_interface or NULL on error
+ */
+static struct fcoe_interface *fcoe_interface_create(struct net_device *netdev,
+						    enum fip_mode fip_mode)
+{
+	struct fcoe_ctlr_device *ctlr_dev;
+	struct fcoe_ctlr *ctlr;
+	struct fcoe_interface *fcoe;
+	int size;
+	int err;
+
+	if (!try_module_get(THIS_MODULE)) {
+		FCOE_NETDEV_DBG(netdev,
+				"Could not get a reference to the module\n");
+		fcoe = ERR_PTR(-EBUSY);
+		goto out;
+	}
+
+	size = sizeof(struct fcoe_ctlr) + sizeof(struct fcoe_interface);
+	ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &fcoe_sysfs_templ,
+					size);
+	if (!ctlr_dev) {
+		FCOE_DBG("Failed to add fcoe_ctlr_device\n");
+		fcoe = ERR_PTR(-ENOMEM);
+		goto out_putmod;
+	}
+
+	ctlr = fcoe_ctlr_device_priv(ctlr_dev);
+	ctlr->cdev = ctlr_dev;
+	fcoe = fcoe_ctlr_priv(ctlr);
+
+	dev_hold(netdev);
+
+	/*
+	 * Initialize FIP.
+	 */
+	fcoe_ctlr_init(ctlr, fip_mode);
+	ctlr->send = fcoe_fip_send;
+	ctlr->update_mac = fcoe_update_src_mac;
+	ctlr->get_src_addr = fcoe_get_src_mac;
+
+	err = fcoe_interface_setup(fcoe, netdev);
+	if (err) {
+		fcoe_ctlr_destroy(ctlr);
+		fcoe_ctlr_device_delete(ctlr_dev);
+		dev_put(netdev);
+		fcoe = ERR_PTR(err);
+		goto out_putmod;
+	}
+
+	goto out;
+
+out_putmod:
+	module_put(THIS_MODULE);
+out:
+	return fcoe;
+}
+
+/**
+ * fcoe_interface_remove() - remove FCoE interface from netdev
+ * @fcoe: The FCoE interface to be cleaned up
+ *
+ * Caller must be holding the RTNL mutex
+ */
+static void fcoe_interface_remove(struct fcoe_interface *fcoe)
+{
+	struct net_device *netdev = fcoe->netdev;
+	struct fcoe_ctlr *fip = fcoe_to_ctlr(fcoe);
+	static const u8 flogi_maddr[ETH_ALEN] = FC_FCOE_FLOGI_MAC;
+	const struct net_device_ops *ops;
+
+	/*
+	 * Don't listen for Ethernet packets anymore.
+	 * synchronize_net() ensures that the packet handlers are not running
+	 * on another CPU. dev_remove_pack() would do that, this calls the
+	 * unsyncronized version __dev_remove_pack() to avoid multiple delays.
+	 */
+	__dev_remove_pack(&fcoe->fcoe_packet_type);
+	__dev_remove_pack(&fcoe->fip_packet_type);
+	if (netdev != fcoe->realdev)
+		__dev_remove_pack(&fcoe->fip_vlan_packet_type);
+	synchronize_net();
+
+	/* Delete secondary MAC addresses */
+	dev_uc_del(netdev, flogi_maddr);
+	if (fip->spma)
+		dev_uc_del(netdev, fip->ctl_src_addr);
+	if (fip->mode == FIP_MODE_VN2VN) {
+		dev_mc_del(netdev, FIP_ALL_VN2VN_MACS);
+		dev_mc_del(netdev, FIP_ALL_P2P_MACS);
+	} else
+		dev_mc_del(netdev, FIP_ALL_ENODE_MACS);
+
+	/* Tell the LLD we are done w/ FCoE */
+	ops = netdev->netdev_ops;
+	if (ops->ndo_fcoe_disable) {
+		if (ops->ndo_fcoe_disable(netdev))
+			FCOE_NETDEV_DBG(netdev, "Failed to disable FCoE"
+					" specific feature for LLD.\n");
+	}
+	fcoe->removed = 1;
+}
+
+
+/**
+ * fcoe_interface_cleanup() - Clean up a FCoE interface
+ * @fcoe: The FCoE interface to be cleaned up
+ */
+static void fcoe_interface_cleanup(struct fcoe_interface *fcoe)
+{
+	struct net_device *netdev = fcoe->netdev;
+	struct fcoe_ctlr *fip = fcoe_to_ctlr(fcoe);
+
+	/* Release the self-reference taken during fcoe_interface_create() */
+	/* tear-down the FCoE controller */
+	fcoe_ctlr_destroy(fip);
+	scsi_host_put(fip->lp->host);
+	dev_put(netdev);
+	module_put(THIS_MODULE);
+}
+
+/**
+ * fcoe_fip_recv() - Handler for received FIP frames
+ * @skb:      The receive skb
+ * @netdev:   The associated net device
+ * @ptype:    The packet_type structure which was used to register this handler
+ * @orig_dev: The original net_device the skb was received on.
+ *	      (in case dev is a bond)
+ *
+ * Returns: 0 for success
+ */
+static int fcoe_fip_recv(struct sk_buff *skb, struct net_device *netdev,
+			 struct packet_type *ptype,
+			 struct net_device *orig_dev)
+{
+	struct fcoe_interface *fcoe;
+	struct fcoe_ctlr *ctlr;
+
+	fcoe = container_of(ptype, struct fcoe_interface, fip_packet_type);
+	ctlr = fcoe_to_ctlr(fcoe);
+	fcoe_ctlr_recv(ctlr, skb);
+	return 0;
+}
+
+/**
+ * fcoe_fip_vlan_recv() - Handler for received FIP VLAN discovery frames
+ * @skb:      The receive skb
+ * @netdev:   The associated net device
+ * @ptype:    The packet_type structure which was used to register this handler
+ * @orig_dev: The original net_device the skb was received on.
+ *	      (in case dev is a bond)
+ *
+ * Returns: 0 for success
+ */
+static int fcoe_fip_vlan_recv(struct sk_buff *skb, struct net_device *netdev,
+			      struct packet_type *ptype,
+			      struct net_device *orig_dev)
+{
+	struct fcoe_interface *fcoe;
+	struct fcoe_ctlr *ctlr;
+
+	fcoe = container_of(ptype, struct fcoe_interface, fip_vlan_packet_type);
+	ctlr = fcoe_to_ctlr(fcoe);
+	fcoe_ctlr_recv(ctlr, skb);
+	return 0;
+}
+
+/**
+ * fcoe_port_send() - Send an Ethernet-encapsulated FIP/FCoE frame
+ * @port: The FCoE port
+ * @skb: The FIP/FCoE packet to be sent
+ */
+static void fcoe_port_send(struct fcoe_port *port, struct sk_buff *skb)
+{
+	if (port->fcoe_pending_queue.qlen)
+		fcoe_check_wait_queue(port->lport, skb);
+	else if (fcoe_start_io(skb))
+		fcoe_check_wait_queue(port->lport, skb);
+}
+
+/**
+ * fcoe_fip_send() - Send an Ethernet-encapsulated FIP frame
+ * @fip: The FCoE controller
+ * @skb: The FIP packet to be sent
+ */
+static void fcoe_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
+{
+	struct fcoe_interface *fcoe = fcoe_from_ctlr(fip);
+	struct fip_frame {
+		struct ethhdr eth;
+		struct fip_header fip;
+	} __packed *frame;
+
+	/*
+	 * Use default VLAN for FIP VLAN discovery protocol
+	 */
+	frame = (struct fip_frame *)skb->data;
+	if (ntohs(frame->eth.h_proto) == ETH_P_FIP &&
+	    ntohs(frame->fip.fip_op) == FIP_OP_VLAN &&
+	    fcoe->realdev != fcoe->netdev)
+		skb->dev = fcoe->realdev;
+	else
+		skb->dev = fcoe->netdev;
+	fcoe_port_send(lport_priv(fip->lp), skb);
+}
+
+/**
+ * fcoe_update_src_mac() - Update the Ethernet MAC filters
+ * @lport: The local port to update the source MAC on
+ * @addr:  Unicast MAC address to add
+ *
+ * Remove any previously-set unicast MAC filter.
+ * Add secondary FCoE MAC address filter for our OUI.
+ */
+static void fcoe_update_src_mac(struct fc_lport *lport, u8 *addr)
+{
+	struct fcoe_port *port = lport_priv(lport);
+	struct fcoe_interface *fcoe = port->priv;
+
+	if (!is_zero_ether_addr(port->data_src_addr))
+		dev_uc_del(fcoe->netdev, port->data_src_addr);
+	if (!is_zero_ether_addr(addr))
+		dev_uc_add(fcoe->netdev, addr);
+	memcpy(port->data_src_addr, addr, ETH_ALEN);
+}
+
+/**
+ * fcoe_get_src_mac() - return the Ethernet source address for an lport
+ * @lport: libfc lport
+ */
+static u8 *fcoe_get_src_mac(struct fc_lport *lport)
+{
+	struct fcoe_port *port = lport_priv(lport);
+
+	return port->data_src_addr;
+}
+
+/**
+ * fcoe_lport_config() - Set up a local port
+ * @lport: The local port to be setup
+ *
+ * Returns: 0 for success
+ */
+static int fcoe_lport_config(struct fc_lport *lport)
+{
+	lport->link_up = 0;
+	lport->qfull = 0;
+	lport->max_retry_count = 3;
+	lport->max_rport_retry_count = 3;
+	lport->e_d_tov = fcoe_e_d_tov;
+	lport->r_a_tov = fcoe_r_a_tov;
+	lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
+				 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
+	lport->does_npiv = 1;
+
+	fc_lport_init_stats(lport);
+
+	/* lport fc_lport related configuration */
+	fc_lport_config(lport);
+
+	/* offload related configuration */
+	lport->crc_offload = 0;
+	lport->seq_offload = 0;
+	lport->lro_enabled = 0;
+	lport->lro_xid = 0;
+	lport->lso_max = 0;
+
+	return 0;
+}
+
+/*
+ * fcoe_netdev_features_change - Updates the lport's offload flags based
+ * on the LLD netdev's FCoE feature flags
+ */
+static void fcoe_netdev_features_change(struct fc_lport *lport,
+					struct net_device *netdev)
+{
+	mutex_lock(&lport->lp_mutex);
+
+	if (netdev->features & NETIF_F_SG)
+		lport->sg_supp = 1;
+	else
+		lport->sg_supp = 0;
+
+	if (netdev->features & NETIF_F_FCOE_CRC) {
+		lport->crc_offload = 1;
+		FCOE_NETDEV_DBG(netdev, "Supports FCCRC offload\n");
+	} else {
+		lport->crc_offload = 0;
+	}
+
+	if (netdev->features & NETIF_F_FSO) {
+		lport->seq_offload = 1;
+		lport->lso_max = min(netdev->gso_max_size, GSO_LEGACY_MAX_SIZE);
+		FCOE_NETDEV_DBG(netdev, "Supports LSO for max len 0x%x\n",
+				lport->lso_max);
+	} else {
+		lport->seq_offload = 0;
+		lport->lso_max = 0;
+	}
+
+	if (netdev->fcoe_ddp_xid) {
+		lport->lro_enabled = 1;
+		lport->lro_xid = netdev->fcoe_ddp_xid;
+		FCOE_NETDEV_DBG(netdev, "Supports LRO for max xid 0x%x\n",
+				lport->lro_xid);
+	} else {
+		lport->lro_enabled = 0;
+		lport->lro_xid = 0;
+	}
+
+	mutex_unlock(&lport->lp_mutex);
+}
+
+/**
+ * fcoe_netdev_config() - Set up net devive for SW FCoE
+ * @lport:  The local port that is associated with the net device
+ * @netdev: The associated net device
+ *
+ * Must be called after fcoe_lport_config() as it will use local port mutex
+ *
+ * Returns: 0 for success
+ */
+static int fcoe_netdev_config(struct fc_lport *lport, struct net_device *netdev)
+{
+	u32 mfs;
+	u64 wwnn, wwpn;
+	struct fcoe_interface *fcoe;
+	struct fcoe_ctlr *ctlr;
+	struct fcoe_port *port;
+
+	/* Setup lport private data to point to fcoe softc */
+	port = lport_priv(lport);
+	fcoe = port->priv;
+	ctlr = fcoe_to_ctlr(fcoe);
+
+	/* Figure out the VLAN ID, if any */
+	if (is_vlan_dev(netdev))
+		lport->vlan = vlan_dev_vlan_id(netdev);
+	else
+		lport->vlan = 0;
+
+	/*
+	 * Determine max frame size based on underlying device and optional
+	 * user-configured limit.  If the MFS is too low, fcoe_link_ok()
+	 * will return 0, so do this first.
+	 */
+	mfs = netdev->mtu;
+	if (netdev->fcoe_mtu) {
+		mfs = FCOE_MTU;
+		FCOE_NETDEV_DBG(netdev, "Supports FCOE_MTU of %d bytes\n", mfs);
+	}
+	mfs -= (sizeof(struct fcoe_hdr) + sizeof(struct fcoe_crc_eof));
+	if (fc_set_mfs(lport, mfs))
+		return -EINVAL;
+
+	/* offload features support */
+	fcoe_netdev_features_change(lport, netdev);
+
+	skb_queue_head_init(&port->fcoe_pending_queue);
+	port->fcoe_pending_queue_active = 0;
+	timer_setup(&port->timer, fcoe_queue_timer, 0);
+
+	netdev_lock_ops(netdev);
+	fcoe_link_speed_update(lport);
+	netdev_unlock_ops(netdev);
+
+	if (!lport->vport) {
+		if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN))
+			wwnn = fcoe_wwn_from_mac(ctlr->ctl_src_addr, 1, 0);
+		fc_set_wwnn(lport, wwnn);
+		if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN))
+			wwpn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
+						 2, 0);
+		fc_set_wwpn(lport, wwpn);
+	}
+
+	return 0;
+}
+
+/**
+ * fcoe_shost_config() - Set up the SCSI host associated with a local port
+ * @lport: The local port
+ * @dev:   The device associated with the SCSI host
+ *
+ * Must be called after fcoe_lport_config() and fcoe_netdev_config()
+ *
+ * Returns: 0 for success
+ */
+static int fcoe_shost_config(struct fc_lport *lport, struct device *dev)
+{
+	int rc = 0;
+
+	/* lport scsi host config */
+	lport->host->max_lun = FCOE_MAX_LUN;
+	lport->host->max_id = FCOE_MAX_FCP_TARGET;
+	lport->host->max_channel = 0;
+	lport->host->max_cmd_len = FCOE_MAX_CMD_LEN;
+
+	if (lport->vport)
+		lport->host->transportt = fcoe_vport_scsi_transport;
+	else
+		lport->host->transportt = fcoe_nport_scsi_transport;
+
+	/* add the new host to the SCSI-ml */
+	rc = scsi_add_host(lport->host, dev);
+	if (rc) {
+		FCOE_NETDEV_DBG(fcoe_netdev(lport), "fcoe_shost_config: "
+				"error on scsi_add_host\n");
+		return rc;
+	}
+
+	if (!lport->vport)
+		fc_host_max_npiv_vports(lport->host) = USHRT_MAX;
+
+	snprintf(fc_host_symbolic_name(lport->host), FC_SYMBOLIC_NAME_SIZE,
+		 "%s v%s over %s", FCOE_NAME, FCOE_VERSION,
+		 fcoe_netdev(lport)->name);
+
+	return 0;
+}
+
+
+/**
+ * fcoe_fdmi_info() - Get FDMI related info from net devive for SW FCoE
+ * @lport:  The local port that is associated with the net device
+ * @netdev: The associated net device
+ *
+ * Must be called after fcoe_shost_config() as it will use local port mutex
+ *
+ */
+static void fcoe_fdmi_info(struct fc_lport *lport, struct net_device *netdev)
+{
+	struct fcoe_interface *fcoe;
+	struct fcoe_port *port;
+	struct net_device *realdev;
+	int rc;
+
+	port = lport_priv(lport);
+	fcoe = port->priv;
+	realdev = fcoe->realdev;
+
+	/* No FDMI state m/c for NPIV ports */
+	if (lport->vport)
+		return;
+
+	if (realdev->netdev_ops->ndo_fcoe_get_hbainfo) {
+		struct netdev_fcoe_hbainfo *fdmi;
+		fdmi = kzalloc_obj(*fdmi);
+		if (!fdmi)
+			return;
+
+		rc = realdev->netdev_ops->ndo_fcoe_get_hbainfo(realdev,
+							       fdmi);
+		if (rc) {
+			printk(KERN_INFO "fcoe: Failed to retrieve FDMI "
+					"information from netdev.\n");
+			return;
+		}
+
+		snprintf(fc_host_serial_number(lport->host),
+			 FC_SERIAL_NUMBER_SIZE,
+			 "%s",
+			 fdmi->serial_number);
+		snprintf(fc_host_manufacturer(lport->host),
+			 FC_SERIAL_NUMBER_SIZE,
+			 "%s",
+			 fdmi->manufacturer);
+		snprintf(fc_host_model(lport->host),
+			 FC_SYMBOLIC_NAME_SIZE,
+			 "%s",
+			 fdmi->model);
+		snprintf(fc_host_model_description(lport->host),
+			 FC_SYMBOLIC_NAME_SIZE,
+			 "%s",
+			 fdmi->model_description);
+		snprintf(fc_host_hardware_version(lport->host),
+			 FC_VERSION_STRING_SIZE,
+			 "%s",
+			 fdmi->hardware_version);
+		snprintf(fc_host_driver_version(lport->host),
+			 FC_VERSION_STRING_SIZE,
+			 "%s",
+			 fdmi->driver_version);
+		snprintf(fc_host_optionrom_version(lport->host),
+			 FC_VERSION_STRING_SIZE,
+			 "%s",
+			 fdmi->optionrom_version);
+		snprintf(fc_host_firmware_version(lport->host),
+			 FC_VERSION_STRING_SIZE,
+			 "%s",
+			 fdmi->firmware_version);
+
+		/* Enable FDMI lport states */
+		lport->fdmi_enabled = 1;
+		kfree(fdmi);
+	} else {
+		lport->fdmi_enabled = 0;
+		printk(KERN_INFO "fcoe: No FDMI support.\n");
+	}
+}
+
+/**
+ * fcoe_oem_match() - The match routine for the offloaded exchange manager
+ * @fp: The I/O frame
+ *
+ * This routine will be associated with an exchange manager (EM). When
+ * the libfc exchange handling code is looking for an EM to use it will
+ * call this routine and pass it the frame that it wishes to send. This
+ * routine will return True if the associated EM is to be used and False
+ * if the echange code should continue looking for an EM.
+ *
+ * The offload EM that this routine is associated with will handle any
+ * packets that are for SCSI read requests.
+ *
+ * This has been enhanced to work when FCoE stack is operating in target
+ * mode.
+ *
+ * Returns: True for read types I/O, otherwise returns false.
+ */
+static bool fcoe_oem_match(struct fc_frame *fp)
+{
+	struct fc_frame_header *fh = fc_frame_header_get(fp);
+	struct fcp_cmnd *fcp;
+
+	if (fc_fcp_is_read(fr_fsp(fp)) &&
+	    (fr_fsp(fp)->data_len > fcoe_ddp_min))
+		return true;
+	else if ((fr_fsp(fp) == NULL) &&
+		 (fh->fh_r_ctl == FC_RCTL_DD_UNSOL_CMD) &&
+		 (ntohs(fh->fh_rx_id) == FC_XID_UNKNOWN)) {
+		fcp = fc_frame_payload_get(fp, sizeof(*fcp));
+		if ((fcp->fc_flags & FCP_CFL_WRDATA) &&
+		    (ntohl(fcp->fc_dl) > fcoe_ddp_min))
+			return true;
+	}
+	return false;
+}
+
+/**
+ * fcoe_em_config() - Allocate and configure an exchange manager
+ * @lport: The local port that the new EM will be associated with
+ *
+ * Returns: 0 on success
+ */
+static inline int fcoe_em_config(struct fc_lport *lport)
+{
+	struct fcoe_port *port = lport_priv(lport);
+	struct fcoe_interface *fcoe = port->priv;
+	struct fcoe_interface *oldfcoe = NULL;
+	struct net_device *old_real_dev, *cur_real_dev;
+	u16 min_xid = FCOE_MIN_XID;
+	u16 max_xid = FCOE_MAX_XID;
+
+	/*
+	 * Check if need to allocate an em instance for
+	 * offload exchange ids to be shared across all VN_PORTs/lport.
+	 */
+	if (!lport->lro_enabled || !lport->lro_xid ||
+	    (lport->lro_xid >= max_xid)) {
+		lport->lro_xid = 0;
+		goto skip_oem;
+	}
+
+	/*
+	 * Reuse existing offload em instance in case
+	 * it is already allocated on real eth device
+	 */
+	if (is_vlan_dev(fcoe->netdev))
+		cur_real_dev = vlan_dev_real_dev(fcoe->netdev);
+	else
+		cur_real_dev = fcoe->netdev;
+
+	list_for_each_entry(oldfcoe, &fcoe_hostlist, list) {
+		if (is_vlan_dev(oldfcoe->netdev))
+			old_real_dev = vlan_dev_real_dev(oldfcoe->netdev);
+		else
+			old_real_dev = oldfcoe->netdev;
+
+		if (cur_real_dev == old_real_dev) {
+			fcoe->oem = oldfcoe->oem;
+			break;
+		}
+	}
+
+	if (fcoe->oem) {
+		if (!fc_exch_mgr_add(lport, fcoe->oem, fcoe_oem_match)) {
+			printk(KERN_ERR "fcoe_em_config: failed to add "
+			       "offload em:%p on interface:%s\n",
+			       fcoe->oem, fcoe->netdev->name);
+			return -ENOMEM;
+		}
+	} else {
+		fcoe->oem = fc_exch_mgr_alloc(lport, FC_CLASS_3,
+					      FCOE_MIN_XID, lport->lro_xid,
+					      fcoe_oem_match);
+		if (!fcoe->oem) {
+			printk(KERN_ERR "fcoe_em_config: failed to allocate "
+			       "em for offload exches on interface:%s\n",
+			       fcoe->netdev->name);
+			return -ENOMEM;
+		}
+	}
+
+	/*
+	 * Exclude offload EM xid range from next EM xid range.
+	 */
+	min_xid += lport->lro_xid + 1;
+
+skip_oem:
+	if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, min_xid, max_xid, NULL)) {
+		printk(KERN_ERR "fcoe_em_config: failed to "
+		       "allocate em on interface %s\n", fcoe->netdev->name);
+		return -ENOMEM;
+	}
+
+	return 0;
+}
+
+/**
+ * fcoe_if_destroy() - Tear down a SW FCoE instance
+ * @lport: The local port to be destroyed
+ *
+ * Locking: Must be called with the RTNL mutex held.
+ *
+ */
+static void fcoe_if_destroy(struct fc_lport *lport)
+{
+	struct fcoe_port *port = lport_priv(lport);
+	struct fcoe_interface *fcoe = port->priv;
+	struct net_device *netdev = fcoe->netdev;
+
+	FCOE_NETDEV_DBG(netdev, "Destroying interface\n");
+
+	/* Logout of the fabric */
+	fc_fabric_logoff(lport);
+
+	/* Cleanup the fc_lport */
+	fc_lport_destroy(lport);
+
+	/* Stop the transmit retry timer */
+	timer_delete_sync(&port->timer);
+
+	/* Free existing transmit skbs */
+	fcoe_clean_pending_queue(lport);
+
+	if (!is_zero_ether_addr(port->data_src_addr))
+		dev_uc_del(netdev, port->data_src_addr);
+	if (lport->vport)
+		synchronize_net();
+	else
+		fcoe_interface_remove(fcoe);
+
+	/* Free queued packets for the per-CPU receive threads */
+	fcoe_percpu_clean(lport);
+
+	/* Detach from the scsi-ml */
+	fc_remove_host(lport->host);
+	scsi_remove_host(lport->host);
+
+	/* Destroy lport scsi_priv */
+	fc_fcp_destroy(lport);
+
+	/* There are no more rports or I/O, free the EM */
+	fc_exch_mgr_free(lport);
+
+	/* Free memory used by statistical counters */
+	fc_lport_free_stats(lport);
+
+	/*
+	 * Release the Scsi_Host for vport but hold on to
+	 * master lport until it fcoe interface fully cleaned-up.
+	 */
+	if (lport->vport)
+		scsi_host_put(lport->host);
+}
+
+/**
+ * fcoe_ddp_setup() - Call a LLD's ddp_setup through the net device
+ * @lport: The local port to setup DDP for
+ * @xid:   The exchange ID for this DDP transfer
+ * @sgl:   The scatterlist describing this transfer
+ * @sgc:   The number of sg items
+ *
+ * Returns: 0 if the DDP context was not configured
+ */
+static int fcoe_ddp_setup(struct fc_lport *lport, u16 xid,
+			  struct scatterlist *sgl, unsigned int sgc)
+{
+	struct net_device *netdev = fcoe_netdev(lport);
+
+	if (netdev->netdev_ops->ndo_fcoe_ddp_setup)
+		return netdev->netdev_ops->ndo_fcoe_ddp_setup(netdev,
+							      xid, sgl,
+							      sgc);
+
+	return 0;
+}
+
+/**
+ * fcoe_ddp_target() - Call a LLD's ddp_target through the net device
+ * @lport: The local port to setup DDP for
+ * @xid:   The exchange ID for this DDP transfer
+ * @sgl:   The scatterlist describing this transfer
+ * @sgc:   The number of sg items
+ *
+ * Returns: 0 if the DDP context was not configured
+ */
+static int fcoe_ddp_target(struct fc_lport *lport, u16 xid,
+			   struct scatterlist *sgl, unsigned int sgc)
+{
+	struct net_device *netdev = fcoe_netdev(lport);
+
+	if (netdev->netdev_ops->ndo_fcoe_ddp_target)
+		return netdev->netdev_ops->ndo_fcoe_ddp_target(netdev, xid,
+							       sgl, sgc);
+
+	return 0;
+}
+
+
+/**
+ * fcoe_ddp_done() - Call a LLD's ddp_done through the net device
+ * @lport: The local port to complete DDP on
+ * @xid:   The exchange ID for this DDP transfer
+ *
+ * Returns: the length of data that have been completed by DDP
+ */
+static int fcoe_ddp_done(struct fc_lport *lport, u16 xid)
+{
+	struct net_device *netdev = fcoe_netdev(lport);
+
+	if (netdev->netdev_ops->ndo_fcoe_ddp_done)
+		return netdev->netdev_ops->ndo_fcoe_ddp_done(netdev, xid);
+	return 0;
+}
+
+/**
+ * fcoe_if_create() - Create a FCoE instance on an interface
+ * @fcoe:   The FCoE interface to create a local port on
+ * @parent: The device pointer to be the parent in sysfs for the SCSI host
+ * @npiv:   Indicates if the port is a vport or not
+ *
+ * Creates a fc_lport instance and a Scsi_Host instance and configure them.
+ *
+ * Returns: The allocated fc_lport or an error pointer
+ */
+static struct fc_lport *fcoe_if_create(struct fcoe_interface *fcoe,
+				       struct device *parent, int npiv)
+{
+	struct fcoe_ctlr *ctlr = fcoe_to_ctlr(fcoe);
+	struct net_device *netdev = fcoe->netdev;
+	struct fc_lport *lport, *n_port;
+	struct fcoe_port *port;
+	struct Scsi_Host *shost;
+	int rc;
+	/*
+	 * parent is only a vport if npiv is 1,
+	 * but we'll only use vport in that case so go ahead and set it
+	 */
+	struct fc_vport *vport = dev_to_vport(parent);
+
+	FCOE_NETDEV_DBG(netdev, "Create Interface\n");
+
+	if (!npiv)
+		lport = libfc_host_alloc(&fcoe_shost_template, sizeof(*port));
+	else
+		lport = libfc_vport_create(vport, sizeof(*port));
+
+	if (!lport) {
+		FCOE_NETDEV_DBG(netdev, "Could not allocate host structure\n");
+		rc = -ENOMEM;
+		goto out;
+	}
+	port = lport_priv(lport);
+	port->lport = lport;
+	port->priv = fcoe;
+	port->get_netdev = fcoe_netdev;
+	port->max_queue_depth = FCOE_MAX_QUEUE_DEPTH;
+	port->min_queue_depth = FCOE_MIN_QUEUE_DEPTH;
+	INIT_WORK(&port->destroy_work, fcoe_destroy_work);
+
+	/*
+	 * Need to add the lport to the hostlist
+	 * so we catch NETDEV_CHANGE events.
+	 */
+	fcoe_hostlist_add(lport);
+
+	/* configure a fc_lport including the exchange manager */
+	rc = fcoe_lport_config(lport);
+	if (rc) {
+		FCOE_NETDEV_DBG(netdev, "Could not configure lport for the "
+				"interface\n");
+		goto out_host_put;
+	}
+
+	if (npiv) {
+		FCOE_NETDEV_DBG(netdev, "Setting vport names, "
+				"%16.16llx %16.16llx\n",
+				vport->node_name, vport->port_name);
+		fc_set_wwnn(lport, vport->node_name);
+		fc_set_wwpn(lport, vport->port_name);
+	}
+
+	/* configure lport network properties */
+	rc = fcoe_netdev_config(lport, netdev);
+	if (rc) {
+		FCOE_NETDEV_DBG(netdev, "Could not configure netdev for the "
+				"interface\n");
+		goto out_lp_destroy;
+	}
+
+	/* configure lport scsi host properties */
+	rc = fcoe_shost_config(lport, parent);
+	if (rc) {
+		FCOE_NETDEV_DBG(netdev, "Could not configure shost for the "
+				"interface\n");
+		goto out_lp_destroy;
+	}
+
+	/* Initialize the library */
+	rc = fcoe_libfc_config(lport, ctlr, &fcoe_libfc_fcn_templ, 1);
+	if (rc) {
+		FCOE_NETDEV_DBG(netdev, "Could not configure libfc for the "
+				"interface\n");
+		goto out_lp_destroy;
+	}
+
+	/* Initialized FDMI information */
+	fcoe_fdmi_info(lport, netdev);
+
+	/*
+	 * fcoe_em_alloc() and fcoe_hostlist_add() both
+	 * need to be atomic with respect to other changes to the
+	 * hostlist since fcoe_em_alloc() looks for an existing EM
+	 * instance on host list updated by fcoe_hostlist_add().
+	 *
+	 * This is currently handled through the fcoe_config_mutex
+	 * begin held.
+	 */
+	if (!npiv)
+		/* lport exch manager allocation */
+		rc = fcoe_em_config(lport);
+	else {
+		shost = vport_to_shost(vport);
+		n_port = shost_priv(shost);
+		rc = fc_exch_mgr_list_clone(n_port, lport);
+	}
+
+	if (rc) {
+		FCOE_NETDEV_DBG(netdev, "Could not configure the EM\n");
+		goto out_lp_destroy;
+	}
+
+	return lport;
+
+out_lp_destroy:
+	fc_exch_mgr_free(lport);
+out_host_put:
+	fcoe_hostlist_del(lport);
+	scsi_host_put(lport->host);
+out:
+	return ERR_PTR(rc);
+}
+
+/**
+ * fcoe_if_init() - Initialization routine for fcoe.ko
+ *
+ * Attaches the SW FCoE transport to the FC transport
+ *
+ * Returns: 0 on success
+ */
+static int __init fcoe_if_init(void)
+{
+	/* attach to scsi transport */
+	fcoe_nport_scsi_transport =
+		fc_attach_transport(&fcoe_nport_fc_functions);
+	if (!fcoe_nport_scsi_transport)
+		goto err;
+
+	fcoe_vport_scsi_transport =
+		fc_attach_transport(&fcoe_vport_fc_functions);
+	if (!fcoe_vport_scsi_transport)
+		goto err_vport;
+
+	return 0;
+
+err_vport:
+	fc_release_transport(fcoe_nport_scsi_transport);
+err:
+	printk(KERN_ERR "fcoe: Failed to attach to the FC transport\n");
+	return -ENODEV;
+}
+
+/**
+ * fcoe_if_exit() - Tear down fcoe.ko
+ *
+ * Detaches the SW FCoE transport from the FC transport
+ *
+ * Returns: 0 on success
+ */
+static int __exit fcoe_if_exit(void)
+{
+	fc_release_transport(fcoe_nport_scsi_transport);
+	fc_release_transport(fcoe_vport_scsi_transport);
+	fcoe_nport_scsi_transport = NULL;
+	fcoe_vport_scsi_transport = NULL;
+	return 0;
+}
+
+static void fcoe_thread_cleanup_local(unsigned int cpu)
+{
+	struct page *crc_eof;
+	struct fcoe_percpu_s *p;
+
+	p = per_cpu_ptr(&fcoe_percpu, cpu);
+	spin_lock_bh(&p->fcoe_rx_list.lock);
+	crc_eof = p->crc_eof_page;
+	p->crc_eof_page = NULL;
+	p->crc_eof_offset = 0;
+	spin_unlock_bh(&p->fcoe_rx_list.lock);
+
+	if (crc_eof)
+		put_page(crc_eof);
+	flush_work(&p->work);
+}
+
+/**
+ * fcoe_rcv() - Receive packets from a net device
+ * @skb:    The received packet
+ * @netdev: The net device that the packet was received on
+ * @ptype:  The packet type context
+ * @olddev: The last device net device
+ *
+ * This routine is called by NET_RX_SOFTIRQ. It receives a packet, builds a
+ * FC frame and passes the frame to libfc.
+ *
+ * Returns: 0 for success
+ */
+static int fcoe_rcv(struct sk_buff *skb, struct net_device *netdev,
+	     struct packet_type *ptype, struct net_device *olddev)
+{
+	struct fc_lport *lport;
+	struct fcoe_rcv_info *fr;
+	struct fcoe_ctlr *ctlr;
+	struct fcoe_interface *fcoe;
+	struct fc_frame_header *fh;
+	struct fcoe_percpu_s *fps;
+	struct ethhdr *eh;
+	unsigned int cpu;
+
+	fcoe = container_of(ptype, struct fcoe_interface, fcoe_packet_type);
+	ctlr = fcoe_to_ctlr(fcoe);
+	lport = ctlr->lp;
+	if (unlikely(!lport)) {
+		FCOE_NETDEV_DBG(netdev, "Cannot find hba structure\n");
+		goto err2;
+	}
+	if (!lport->link_up)
+		goto err2;
+
+	FCOE_NETDEV_DBG(netdev,
+			"skb_info: len:%d data_len:%d head:%p data:%p tail:%p end:%p sum:%d dev:%s\n",
+			skb->len, skb->data_len, skb->head, skb->data,
+			skb_tail_pointer(skb), skb_end_pointer(skb),
+			skb->csum, skb->dev ? skb->dev->name : "<NULL>");
+
+
+	skb = skb_share_check(skb, GFP_ATOMIC);
+
+	if (skb == NULL)
+		return NET_RX_DROP;
+
+	eh = eth_hdr(skb);
+
+	if (is_fip_mode(ctlr) &&
+	    !ether_addr_equal(eh->h_source, ctlr->dest_addr)) {
+		FCOE_NETDEV_DBG(netdev, "wrong source mac address:%pM\n",
+				eh->h_source);
+		goto err;
+	}
+
+	/*
+	 * Check for minimum frame length, and make sure required FCoE
+	 * and FC headers are pulled into the linear data area.
+	 */
+	if (unlikely((skb->len < FCOE_MIN_FRAME) ||
+		     !pskb_may_pull(skb, FCOE_HEADER_LEN)))
+		goto err;
+
+	skb_set_transport_header(skb, sizeof(struct fcoe_hdr));
+	fh = (struct fc_frame_header *) skb_transport_header(skb);
+
+	if (ntoh24(&eh->h_dest[3]) != ntoh24(fh->fh_d_id)) {
+		FCOE_NETDEV_DBG(netdev, "FC frame d_id mismatch with MAC:%pM\n",
+				eh->h_dest);
+		goto err;
+	}
+
+	fr = fcoe_dev_from_skb(skb);
+	fr->fr_dev = lport;
+
+	/*
+	 * In case the incoming frame's exchange is originated from
+	 * the initiator, then received frame's exchange id is ANDed
+	 * with fc_cpu_mask bits to get the same cpu on which exchange
+	 * was originated, otherwise select cpu using rx exchange id
+	 * or fcoe_select_cpu().
+	 */
+	if (ntoh24(fh->fh_f_ctl) & FC_FC_EX_CTX)
+		cpu = ntohs(fh->fh_ox_id) & fc_cpu_mask;
+	else {
+		if (ntohs(fh->fh_rx_id) == FC_XID_UNKNOWN)
+			cpu = skb->alloc_cpu;
+		else
+			cpu = ntohs(fh->fh_rx_id) & fc_cpu_mask;
+	}
+
+	if (cpu >= nr_cpu_ids)
+		goto err;
+
+	fps = &per_cpu(fcoe_percpu, cpu);
+	spin_lock(&fps->fcoe_rx_list.lock);
+	/*
+	 * We now have a valid CPU that we're targeting for
+	 * this skb. We also have this receive thread locked,
+	 * so we're free to queue skbs into it's queue.
+	 */
+
+	/*
+	 * Note: We used to have a set of conditions under which we would
+	 * call fcoe_recv_frame directly, rather than queuing to the rx list
+	 * as it could save a few cycles, but doing so is prohibited, as
+	 * fcoe_recv_frame has several paths that may sleep, which is forbidden
+	 * in softirq context.
+	 */
+	__skb_queue_tail(&fps->fcoe_rx_list, skb);
+	schedule_work_on(cpu, &fps->work);
+	spin_unlock(&fps->fcoe_rx_list.lock);
+
+	return NET_RX_SUCCESS;
+err:
+	this_cpu_inc(lport->stats->ErrorFrames);
+err2:
+	kfree_skb(skb);
+	return NET_RX_DROP;
+}
+
+/**
+ * fcoe_alloc_paged_crc_eof() - Allocate a page to be used for the trailer CRC
+ * @skb:  The packet to be transmitted
+ * @tlen: The total length of the trailer
+ *
+ * Returns: 0 for success
+ */
+static int fcoe_alloc_paged_crc_eof(struct sk_buff *skb, int tlen)
+{
+	struct fcoe_percpu_s *fps;
+	int rc;
+
+	local_lock(&fcoe_percpu.lock);
+	fps = this_cpu_ptr(&fcoe_percpu);
+	rc = fcoe_get_paged_crc_eof(skb, tlen, fps);
+	local_unlock(&fcoe_percpu.lock);
+
+	return rc;
+}
+
+/**
+ * fcoe_xmit() - Transmit a FCoE frame
+ * @lport: The local port that the frame is to be transmitted for
+ * @fp:	   The frame to be transmitted
+ *
+ * Return: 0 for success
+ */
+static int fcoe_xmit(struct fc_lport *lport, struct fc_frame *fp)
+{
+	int wlen;
+	u32 crc;
+	struct ethhdr *eh;
+	struct fcoe_crc_eof *cp;
+	struct sk_buff *skb;
+	struct fc_frame_header *fh;
+	unsigned int hlen;		/* header length implies the version */
+	unsigned int tlen;		/* trailer length */
+	unsigned int elen;		/* eth header, may include vlan */
+	struct fcoe_port *port = lport_priv(lport);
+	struct fcoe_interface *fcoe = port->priv;
+	struct fcoe_ctlr *ctlr = fcoe_to_ctlr(fcoe);
+	u8 sof, eof;
+	struct fcoe_hdr *hp;
+
+	WARN_ON((fr_len(fp) % sizeof(u32)) != 0);
+
+	fh = fc_frame_header_get(fp);
+	skb = fp_skb(fp);
+
+	if (!lport->link_up) {
+		kfree_skb(skb);
+		return 0;
+	}
+
+	if (unlikely(fh->fh_type == FC_TYPE_ELS) &&
+	    fcoe_ctlr_els_send(ctlr, lport, skb))
+		return 0;
+
+	sof = fr_sof(fp);
+	eof = fr_eof(fp);
+
+	elen = sizeof(struct ethhdr);
+	hlen = sizeof(struct fcoe_hdr);
+	tlen = sizeof(struct fcoe_crc_eof);
+	wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
+
+	/* crc offload */
+	if (likely(lport->crc_offload)) {
+		skb->ip_summed = CHECKSUM_PARTIAL;
+		skb->csum_start = skb_headroom(skb);
+		skb->csum_offset = skb->len;
+		crc = 0;
+	} else {
+		skb->ip_summed = CHECKSUM_NONE;
+		crc = fcoe_fc_crc(fp);
+	}
+
+	/* copy port crc and eof to the skb buff */
+	if (skb_is_nonlinear(skb)) {
+		skb_frag_t *frag;
+		if (fcoe_alloc_paged_crc_eof(skb, tlen)) {
+			kfree_skb(skb);
+			return -ENOMEM;
+		}
+		frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
+		cp = kmap_atomic(skb_frag_page(frag)) + skb_frag_off(frag);
+	} else {
+		cp = skb_put(skb, tlen);
+	}
+
+	memset(cp, 0, sizeof(*cp));
+	cp->fcoe_eof = eof;
+	cp->fcoe_crc32 = cpu_to_le32(~crc);
+
+	if (skb_is_nonlinear(skb)) {
+		kunmap_atomic(cp);
+		cp = NULL;
+	}
+
+	/* adjust skb network/transport offsets to match mac/fcoe/port */
+	skb_push(skb, elen + hlen);
+	skb_reset_mac_header(skb);
+	skb_reset_network_header(skb);
+	skb->mac_len = elen;
+	skb->protocol = htons(ETH_P_FCOE);
+	skb->priority = fcoe->priority;
+
+	if (is_vlan_dev(fcoe->netdev) &&
+	    fcoe->realdev->features & NETIF_F_HW_VLAN_CTAG_TX) {
+		/* must set skb->dev before calling vlan_put_tag */
+		skb->dev = fcoe->realdev;
+		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
+				       vlan_dev_vlan_id(fcoe->netdev));
+	} else
+		skb->dev = fcoe->netdev;
+
+	/* fill up mac and fcoe headers */
+	eh = eth_hdr(skb);
+	eh->h_proto = htons(ETH_P_FCOE);
+	memcpy(eh->h_dest, ctlr->dest_addr, ETH_ALEN);
+	if (ctlr->map_dest)
+		memcpy(eh->h_dest + 3, fh->fh_d_id, 3);
+
+	if (unlikely(ctlr->flogi_oxid != FC_XID_UNKNOWN))
+		memcpy(eh->h_source, ctlr->ctl_src_addr, ETH_ALEN);
+	else
+		memcpy(eh->h_source, port->data_src_addr, ETH_ALEN);
+
+	hp = (struct fcoe_hdr *)(eh + 1);
+	memset(hp, 0, sizeof(*hp));
+	if (FC_FCOE_VER)
+		FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
+	hp->fcoe_sof = sof;
+
+	/* fcoe lso, mss is in max_payload which is non-zero for FCP data */
+	if (lport->seq_offload && fr_max_payload(fp)) {
+		skb_shinfo(skb)->gso_type = SKB_GSO_FCOE;
+		skb_shinfo(skb)->gso_size = fr_max_payload(fp);
+	} else {
+		skb_shinfo(skb)->gso_type = 0;
+		skb_shinfo(skb)->gso_size = 0;
+	}
+	/* update tx stats: regardless if LLD fails */
+	this_cpu_inc(lport->stats->TxFrames);
+	this_cpu_add(lport->stats->TxWords, wlen);
+
+	/* send down to lld */
+	fr_dev(fp) = lport;
+	fcoe_port_send(port, skb);
+	return 0;
+}
+
+/**
+ * fcoe_filter_frames() - filter out bad fcoe frames, i.e. bad CRC
+ * @lport: The local port the frame was received on
+ * @fp:	   The received frame
+ *
+ * Return: 0 on passing filtering checks
+ */
+static inline int fcoe_filter_frames(struct fc_lport *lport,
+				     struct fc_frame *fp)
+{
+	struct fcoe_ctlr *ctlr;
+	struct fcoe_interface *fcoe;
+	struct fc_frame_header *fh;
+	struct sk_buff *skb = (struct sk_buff *)fp;
+
+	/*
+	 * We only check CRC if no offload is available and if it is
+	 * it's solicited data, in which case, the FCP layer would
+	 * check it during the copy.
+	 */
+	if (lport->crc_offload && skb->ip_summed == CHECKSUM_UNNECESSARY)
+		fr_flags(fp) &= ~FCPHF_CRC_UNCHECKED;
+	else
+		fr_flags(fp) |= FCPHF_CRC_UNCHECKED;
+
+	fh = fc_frame_header_get(fp);
+	if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA && fh->fh_type == FC_TYPE_FCP)
+		return 0;
+
+	fcoe = ((struct fcoe_port *)lport_priv(lport))->priv;
+	ctlr = fcoe_to_ctlr(fcoe);
+	if (is_fip_mode(ctlr) && fc_frame_payload_op(fp) == ELS_LOGO &&
+	    ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
+		FCOE_DBG("fcoe: dropping FCoE lport LOGO in fip mode\n");
+		return -EINVAL;
+	}
+
+	if (!(fr_flags(fp) & FCPHF_CRC_UNCHECKED) ||
+	    le32_to_cpu(fr_crc(fp)) == ~crc32(~0, skb->data, skb->len)) {
+		fr_flags(fp) &= ~FCPHF_CRC_UNCHECKED;
+		return 0;
+	}
+
+	if (this_cpu_inc_return(lport->stats->InvalidCRCCount) < 5)
+		printk(KERN_WARNING "fcoe: dropping frame with CRC error\n");
+	return -EINVAL;
+}
+
+/**
+ * fcoe_recv_frame() - process a single received frame
+ * @skb: frame to process
+ */
+static void fcoe_recv_frame(struct sk_buff *skb)
+{
+	u32 fr_len;
+	struct fc_lport *lport;
+	struct fcoe_rcv_info *fr;
+	struct fcoe_crc_eof crc_eof;
+	struct fc_frame *fp;
+	struct fcoe_hdr *hp;
+
+	fr = fcoe_dev_from_skb(skb);
+	lport = fr->fr_dev;
+	if (unlikely(!lport)) {
+		FCOE_NETDEV_DBG(skb->dev, "NULL lport in skb\n");
+		kfree_skb(skb);
+		return;
+	}
+
+	FCOE_NETDEV_DBG(skb->dev,
+			"skb_info: len:%d data_len:%d head:%p data:%p tail:%p end:%p sum:%d dev:%s\n",
+			skb->len, skb->data_len,
+			skb->head, skb->data, skb_tail_pointer(skb),
+			skb_end_pointer(skb), skb->csum,
+			skb->dev ? skb->dev->name : "<NULL>");
+
+	skb_linearize(skb); /* check for skb_is_nonlinear is within skb_linearize */
+
+	/*
+	 * Frame length checks and setting up the header pointers
+	 * was done in fcoe_rcv already.
+	 */
+	hp = (struct fcoe_hdr *) skb_network_header(skb);
+
+	if (unlikely(FC_FCOE_DECAPS_VER(hp) != FC_FCOE_VER)) {
+		struct fc_stats *stats;
+
+		stats = per_cpu_ptr(lport->stats, raw_smp_processor_id());
+		if (READ_ONCE(stats->ErrorFrames) < 5)
+			printk(KERN_WARNING "fcoe: FCoE version "
+			       "mismatch: The frame has "
+			       "version %x, but the "
+			       "initiator supports version "
+			       "%x\n", FC_FCOE_DECAPS_VER(hp),
+			       FC_FCOE_VER);
+		goto drop;
+	}
+
+	skb_pull(skb, sizeof(struct fcoe_hdr));
+	fr_len = skb->len - sizeof(struct fcoe_crc_eof);
+
+	this_cpu_inc(lport->stats->RxFrames);
+	this_cpu_add(lport->stats->RxWords, fr_len / FCOE_WORD_TO_BYTE);
+
+	fp = (struct fc_frame *)skb;
+	fc_frame_init(fp);
+	fr_dev(fp) = lport;
+	fr_sof(fp) = hp->fcoe_sof;
+
+	/* Copy out the CRC and EOF trailer for access */
+	if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof)))
+		goto drop;
+	fr_eof(fp) = crc_eof.fcoe_eof;
+	fr_crc(fp) = crc_eof.fcoe_crc32;
+	if (pskb_trim(skb, fr_len))
+		goto drop;
+
+	if (!fcoe_filter_frames(lport, fp)) {
+		fc_exch_recv(lport, fp);
+		return;
+	}
+drop:
+	this_cpu_inc(lport->stats->ErrorFrames);
+	kfree_skb(skb);
+}
+
+/**
+ * fcoe_receive_work() - The per-CPU worker
+ * @work: The work struct
+ *
+ */
+static void fcoe_receive_work(struct work_struct *work)
+{
+	struct fcoe_percpu_s *p;
+	struct sk_buff *skb;
+	struct sk_buff_head tmp;
+
+	p = container_of(work, struct fcoe_percpu_s, work);
+	skb_queue_head_init(&tmp);
+
+	spin_lock_bh(&p->fcoe_rx_list.lock);
+	skb_queue_splice_init(&p->fcoe_rx_list, &tmp);
+	spin_unlock_bh(&p->fcoe_rx_list.lock);
+
+	if (!skb_queue_len(&tmp))
+		return;
+
+	while ((skb = __skb_dequeue(&tmp)))
+		fcoe_recv_frame(skb);
+}
+
+/**
+ * fcoe_dev_setup() - Setup the link change notification interface
+ */
+static void fcoe_dev_setup(void)
+{
+	register_dcbevent_notifier(&dcb_notifier);
+	register_netdevice_notifier(&fcoe_notifier);
+}
+
+/**
+ * fcoe_dev_cleanup() - Cleanup the link change notification interface
+ */
+static void fcoe_dev_cleanup(void)
+{
+	unregister_dcbevent_notifier(&dcb_notifier);
+	unregister_netdevice_notifier(&fcoe_notifier);
+}
+
+static struct fcoe_interface *
+fcoe_hostlist_lookup_realdev_port(struct net_device *netdev)
+{
+	struct fcoe_interface *fcoe;
+	struct net_device *real_dev;
+
+	list_for_each_entry(fcoe, &fcoe_hostlist, list) {
+		if (is_vlan_dev(fcoe->netdev))
+			real_dev = vlan_dev_real_dev(fcoe->netdev);
+		else
+			real_dev = fcoe->netdev;
+
+		if (netdev == real_dev)
+			return fcoe;
+	}
+	return NULL;
+}
+
+static int fcoe_dcb_app_notification(struct notifier_block *notifier,
+				     ulong event, void *ptr)
+{
+	struct dcb_app_type *entry = ptr;
+	struct fcoe_ctlr *ctlr;
+	struct fcoe_interface *fcoe;
+	struct net_device *netdev;
+	int prio;
+
+	if (entry->app.selector != DCB_APP_IDTYPE_ETHTYPE)
+		return NOTIFY_OK;
+
+	netdev = dev_get_by_index(&init_net, entry->ifindex);
+	if (!netdev)
+		return NOTIFY_OK;
+
+	fcoe = fcoe_hostlist_lookup_realdev_port(netdev);
+	dev_put(netdev);
+	if (!fcoe)
+		return NOTIFY_OK;
+
+	ctlr = fcoe_to_ctlr(fcoe);
+
+	if (entry->dcbx & DCB_CAP_DCBX_VER_CEE)
+		prio = ffs(entry->app.priority) - 1;
+	else
+		prio = entry->app.priority;
+
+	if (prio < 0)
+		return NOTIFY_OK;
+
+	if (entry->app.protocol == ETH_P_FIP ||
+	    entry->app.protocol == ETH_P_FCOE)
+		ctlr->priority = prio;
+
+	if (entry->app.protocol == ETH_P_FCOE)
+		fcoe->priority = prio;
+
+	return NOTIFY_OK;
+}
+
+/**
+ * fcoe_device_notification() - Handler for net device events
+ * @notifier: The context of the notification
+ * @event:    The type of event
+ * @ptr:      The net device that the event was on
+ *
+ * This function is called by the Ethernet driver in case of link change event.
+ *
+ * Returns: 0 for success
+ */
+static int fcoe_device_notification(struct notifier_block *notifier,
+				    ulong event, void *ptr)
+{
+	struct fcoe_ctlr_device *cdev;
+	struct fc_lport *lport = NULL;
+	struct net_device *netdev = netdev_notifier_info_to_dev(ptr);
+	struct fcoe_ctlr *ctlr;
+	struct fcoe_interface *fcoe;
+	u32 link_possible = 1;
+	u32 mfs;
+	int rc = NOTIFY_OK;
+
+	list_for_each_entry(fcoe, &fcoe_hostlist, list) {
+		if (fcoe->netdev == netdev) {
+			ctlr = fcoe_to_ctlr(fcoe);
+			lport = ctlr->lp;
+			break;
+		}
+	}
+	if (!lport) {
+		rc = NOTIFY_DONE;
+		goto out;
+	}
+
+	switch (event) {
+	case NETDEV_DOWN:
+	case NETDEV_GOING_DOWN:
+		link_possible = 0;
+		break;
+	case NETDEV_UP:
+	case NETDEV_CHANGE:
+		fcoe_link_speed_update(lport);
+		break;
+	case NETDEV_CHANGEMTU:
+		if (netdev->fcoe_mtu)
+			break;
+		mfs = netdev->mtu - (sizeof(struct fcoe_hdr) +
+				     sizeof(struct fcoe_crc_eof));
+		if (mfs >= FC_MIN_MAX_FRAME)
+			fc_set_mfs(lport, mfs);
+		break;
+	case NETDEV_REGISTER:
+		break;
+	case NETDEV_UNREGISTER:
+		list_del(&fcoe->list);
+		fcoe_vport_remove(lport);
+		mutex_lock(&fcoe_config_mutex);
+		fcoe_if_destroy(lport);
+		if (!fcoe->removed)
+			fcoe_interface_remove(fcoe);
+		fcoe_interface_cleanup(fcoe);
+		mutex_unlock(&fcoe_config_mutex);
+		fcoe_ctlr_device_delete(fcoe_ctlr_to_ctlr_dev(ctlr));
+		goto out;
+	case NETDEV_FEAT_CHANGE:
+		fcoe_netdev_features_change(lport, netdev);
+		break;
+	default:
+		FCOE_NETDEV_DBG(netdev, "Unknown event %ld "
+				"from netdev netlink\n", event);
+	}
+
+	cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
+
+	if (link_possible && !fcoe_link_ok(lport)) {
+		switch (cdev->enabled) {
+		case FCOE_CTLR_DISABLED:
+			pr_info("Link up while interface is disabled.\n");
+			break;
+		case FCOE_CTLR_ENABLED:
+		case FCOE_CTLR_UNUSED:
+			fcoe_ctlr_link_up(ctlr);
+		}
+	} else if (fcoe_ctlr_link_down(ctlr)) {
+		switch (cdev->enabled) {
+		case FCOE_CTLR_DISABLED:
+			pr_info("Link down while interface is disabled.\n");
+			break;
+		case FCOE_CTLR_ENABLED:
+		case FCOE_CTLR_UNUSED:
+			this_cpu_inc(lport->stats->LinkFailureCount);
+			fcoe_clean_pending_queue(lport);
+		}
+	}
+out:
+	return rc;
+}
+
+/**
+ * fcoe_disable() - Disables a FCoE interface
+ * @netdev  : The net_device object the Ethernet interface to create on
+ *
+ * Called from fcoe transport.
+ *
+ * Returns: 0 for success
+ *
+ * Deprecated: use fcoe_ctlr_enabled()
+ */
+static int fcoe_disable(struct net_device *netdev)
+{
+	struct fcoe_ctlr *ctlr;
+	struct fcoe_interface *fcoe;
+	int rc = 0;
+
+	mutex_lock(&fcoe_config_mutex);
+
+	rtnl_lock();
+	fcoe = fcoe_hostlist_lookup_port(netdev);
+	rtnl_unlock();
+
+	if (fcoe) {
+		ctlr = fcoe_to_ctlr(fcoe);
+		fcoe_ctlr_link_down(ctlr);
+		fcoe_clean_pending_queue(ctlr->lp);
+	} else
+		rc = -ENODEV;
+
+	mutex_unlock(&fcoe_config_mutex);
+	return rc;
+}
+
+/**
+ * fcoe_enable() - Enables a FCoE interface
+ * @netdev  : The net_device object the Ethernet interface to create on
+ *
+ * Called from fcoe transport.
+ *
+ * Returns: 0 for success
+ */
+static int fcoe_enable(struct net_device *netdev)
+{
+	struct fcoe_ctlr *ctlr;
+	struct fcoe_interface *fcoe;
+	int rc = 0;
+
+	mutex_lock(&fcoe_config_mutex);
+	rtnl_lock();
+	fcoe = fcoe_hostlist_lookup_port(netdev);
+	rtnl_unlock();
+
+	if (!fcoe) {
+		rc = -ENODEV;
+		goto out;
+	}
+
+	ctlr = fcoe_to_ctlr(fcoe);
+
+	if (!fcoe_link_ok(ctlr->lp))
+		fcoe_ctlr_link_up(ctlr);
+
+out:
+	mutex_unlock(&fcoe_config_mutex);
+	return rc;
+}
+
+/**
+ * fcoe_ctlr_enabled() - Enable or disable an FCoE Controller
+ * @cdev: The FCoE Controller that is being enabled or disabled
+ *
+ * fcoe_sysfs will ensure that the state of 'enabled' has
+ * changed, so no checking is necessary here. This routine simply
+ * calls fcoe_enable or fcoe_disable, both of which are deprecated.
+ * When those routines are removed the functionality can be merged
+ * here.
+ */
+static int fcoe_ctlr_enabled(struct fcoe_ctlr_device *cdev)
+{
+	struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(cdev);
+	struct fc_lport *lport = ctlr->lp;
+	struct net_device *netdev = fcoe_netdev(lport);
+
+	switch (cdev->enabled) {
+	case FCOE_CTLR_ENABLED:
+		return fcoe_enable(netdev);
+	case FCOE_CTLR_DISABLED:
+		return fcoe_disable(netdev);
+	case FCOE_CTLR_UNUSED:
+	default:
+		return -ENOTSUPP;
+	}
+}
+
+/**
+ * fcoe_ctlr_mode() - Switch FIP mode
+ * @ctlr_dev: The FCoE Controller that is being modified
+ *
+ * When the FIP mode has been changed we need to update
+ * the multicast addresses to ensure we get the correct
+ * frames.
+ */
+static void fcoe_ctlr_mode(struct fcoe_ctlr_device *ctlr_dev)
+{
+	struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev);
+	struct fcoe_interface *fcoe = fcoe_ctlr_priv(ctlr);
+
+	if (ctlr_dev->mode == FIP_CONN_TYPE_VN2VN &&
+	    ctlr->mode != FIP_MODE_VN2VN) {
+		dev_mc_del(fcoe->netdev, FIP_ALL_ENODE_MACS);
+		dev_mc_add(fcoe->netdev, FIP_ALL_VN2VN_MACS);
+		dev_mc_add(fcoe->netdev, FIP_ALL_P2P_MACS);
+	} else if (ctlr->mode != FIP_MODE_FABRIC) {
+		dev_mc_del(fcoe->netdev, FIP_ALL_VN2VN_MACS);
+		dev_mc_del(fcoe->netdev, FIP_ALL_P2P_MACS);
+		dev_mc_add(fcoe->netdev, FIP_ALL_ENODE_MACS);
+	}
+	fcoe_ctlr_set_fip_mode(ctlr_dev);
+}
+
+/**
+ * fcoe_destroy() - Destroy a FCoE interface
+ * @netdev  : The net_device object the Ethernet interface to create on
+ *
+ * Called from fcoe transport
+ *
+ * Returns: 0 for success
+ */
+static int fcoe_destroy(struct net_device *netdev)
+{
+	struct fcoe_ctlr *ctlr;
+	struct fcoe_interface *fcoe;
+	struct fc_lport *lport;
+	struct fcoe_port *port;
+	int rc = 0;
+
+	mutex_lock(&fcoe_config_mutex);
+	rtnl_lock();
+	fcoe = fcoe_hostlist_lookup_port(netdev);
+	if (!fcoe) {
+		rc = -ENODEV;
+		goto out_nodev;
+	}
+	ctlr = fcoe_to_ctlr(fcoe);
+	lport = ctlr->lp;
+	port = lport_priv(lport);
+	list_del(&fcoe->list);
+	queue_work(fcoe_wq, &port->destroy_work);
+out_nodev:
+	rtnl_unlock();
+	mutex_unlock(&fcoe_config_mutex);
+	return rc;
+}
+
+/**
+ * fcoe_destroy_work() - Destroy a FCoE port in a deferred work context
+ * @work: Handle to the FCoE port to be destroyed
+ */
+static void fcoe_destroy_work(struct work_struct *work)
+{
+	struct fcoe_ctlr_device *cdev;
+	struct fcoe_ctlr *ctlr;
+	struct fcoe_port *port;
+	struct fcoe_interface *fcoe;
+
+	port = container_of(work, struct fcoe_port, destroy_work);
+
+	fcoe_vport_remove(port->lport);
+
+	mutex_lock(&fcoe_config_mutex);
+
+	fcoe = port->priv;
+	ctlr = fcoe_to_ctlr(fcoe);
+	cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
+
+	rtnl_lock();
+	fcoe_if_destroy(port->lport);
+	if (!fcoe->removed)
+		fcoe_interface_remove(fcoe);
+	rtnl_unlock();
+	fcoe_interface_cleanup(fcoe);
+
+	mutex_unlock(&fcoe_config_mutex);
+
+	fcoe_ctlr_device_delete(cdev);
+}
+
+/**
+ * fcoe_match() - Check if the FCoE is supported on the given netdevice
+ * @netdev  : The net_device object the Ethernet interface to create on
+ *
+ * Called from fcoe transport.
+ *
+ * Returns: always returns true as this is the default FCoE transport,
+ * i.e., support all netdevs.
+ */
+static bool fcoe_match(struct net_device *netdev)
+{
+	return true;
+}
+
+/**
+ * fcoe_dcb_create() - Initialize DCB attributes and hooks
+ * @fcoe:   The new FCoE interface
+ */
+static void fcoe_dcb_create(struct fcoe_interface *fcoe)
+{
+	int ctlr_prio = TC_PRIO_BESTEFFORT;
+	int fcoe_prio = TC_PRIO_INTERACTIVE;
+	struct fcoe_ctlr *ctlr = fcoe_to_ctlr(fcoe);
+#ifdef CONFIG_DCB
+	int dcbx;
+	u8 fup, up;
+	struct net_device *netdev = fcoe->realdev;
+	struct dcb_app app = {
+				.priority = 0,
+				.protocol = ETH_P_FCOE
+			     };
+
+	/* setup DCB priority attributes. */
+	if (netdev && netdev->dcbnl_ops && netdev->dcbnl_ops->getdcbx) {
+		dcbx = netdev->dcbnl_ops->getdcbx(netdev);
+
+		if (dcbx & DCB_CAP_DCBX_VER_IEEE) {
+			app.selector = IEEE_8021QAZ_APP_SEL_ETHERTYPE;
+			up = dcb_ieee_getapp_mask(netdev, &app);
+			app.protocol = ETH_P_FIP;
+			fup = dcb_ieee_getapp_mask(netdev, &app);
+		} else {
+			app.selector = DCB_APP_IDTYPE_ETHTYPE;
+			up = dcb_getapp(netdev, &app);
+			app.protocol = ETH_P_FIP;
+			fup = dcb_getapp(netdev, &app);
+		}
+
+		fcoe_prio = ffs(up) ? ffs(up) - 1 : 0;
+		ctlr_prio = ffs(fup) ? ffs(fup) - 1 : fcoe_prio;
+	}
+#endif
+	fcoe->priority = fcoe_prio;
+	ctlr->priority = ctlr_prio;
+}
+
+enum fcoe_create_link_state {
+	FCOE_CREATE_LINK_DOWN,
+	FCOE_CREATE_LINK_UP,
+};
+
+/**
+ * _fcoe_create() - (internal) Create a fcoe interface
+ * @netdev  :   The net_device object the Ethernet interface to create on
+ * @fip_mode:   The FIP mode for this creation
+ * @link_state: The ctlr link state on creation
+ *
+ * Called from either the libfcoe 'create' module parameter
+ * via fcoe_create or from fcoe_syfs's ctlr_create file.
+ *
+ * libfcoe's 'create' module parameter is deprecated so some
+ * consolidation of code can be done when that interface is
+ * removed.
+ */
+static int _fcoe_create(struct net_device *netdev, enum fip_mode fip_mode,
+			enum fcoe_create_link_state link_state)
+{
+	int rc = 0;
+	struct fcoe_ctlr_device *ctlr_dev;
+	struct fcoe_ctlr *ctlr;
+	struct fcoe_interface *fcoe;
+	struct fc_lport *lport;
+
+	mutex_lock(&fcoe_config_mutex);
+	rtnl_lock();
+
+	/* look for existing lport */
+	if (fcoe_hostlist_lookup(netdev)) {
+		rc = -EEXIST;
+		goto out_nodev;
+	}
+
+	fcoe = fcoe_interface_create(netdev, fip_mode);
+	if (IS_ERR(fcoe)) {
+		rc = PTR_ERR(fcoe);
+		goto out_nodev;
+	}
+
+	ctlr = fcoe_to_ctlr(fcoe);
+	ctlr_dev = fcoe_ctlr_to_ctlr_dev(ctlr);
+	lport = fcoe_if_create(fcoe, &ctlr_dev->dev, 0);
+	if (IS_ERR(lport)) {
+		printk(KERN_ERR "fcoe: Failed to create interface (%s)\n",
+		       netdev->name);
+		rc = -EIO;
+		if (!fcoe->removed)
+			fcoe_interface_remove(fcoe);
+		rtnl_unlock();
+		fcoe_interface_cleanup(fcoe);
+		mutex_unlock(&fcoe_config_mutex);
+		fcoe_ctlr_device_delete(ctlr_dev);
+		return rc;
+	}
+
+	/* Make this the "master" N_Port */
+	ctlr->lp = lport;
+
+	/* setup DCB priority attributes. */
+	fcoe_dcb_create(fcoe);
+
+	/* start FIP Discovery and FLOGI */
+	lport->boot_time = jiffies;
+	fc_fabric_login(lport);
+
+	/*
+	 * If the fcoe_ctlr_device is to be set to DISABLED
+	 * it must be done after the lport is added to the
+	 * hostlist, but before the rtnl_lock is released.
+	 * This is because the rtnl_lock protects the
+	 * hostlist that fcoe_device_notification uses. If
+	 * the FCoE Controller is intended to be created
+	 * DISABLED then 'enabled' needs to be considered
+	 * handling link events. 'enabled' must be set
+	 * before the lport can be found in the hostlist
+	 * when a link up event is received.
+	 */
+	if (link_state == FCOE_CREATE_LINK_UP)
+		ctlr_dev->enabled = FCOE_CTLR_ENABLED;
+	else
+		ctlr_dev->enabled = FCOE_CTLR_DISABLED;
+
+	if (link_state == FCOE_CREATE_LINK_UP &&
+	    !fcoe_link_ok(lport)) {
+		rtnl_unlock();
+		fcoe_ctlr_link_up(ctlr);
+		mutex_unlock(&fcoe_config_mutex);
+		return rc;
+	}
+
+out_nodev:
+	rtnl_unlock();
+	mutex_unlock(&fcoe_config_mutex);
+
+	return rc;
+}
+
+/**
+ * fcoe_create() - Create a fcoe interface
+ * @netdev  : The net_device object the Ethernet interface to create on
+ * @fip_mode: The FIP mode for this creation
+ *
+ * Called from fcoe transport
+ *
+ * Returns: 0 for success
+ */
+static int fcoe_create(struct net_device *netdev, enum fip_mode fip_mode)
+{
+	return _fcoe_create(netdev, fip_mode, FCOE_CREATE_LINK_UP);
+}
+
+/**
+ * fcoe_ctlr_alloc() - Allocate a fcoe interface from fcoe_sysfs
+ * @netdev: The net_device to be used by the allocated FCoE Controller
+ *
+ * This routine is called from fcoe_sysfs. It will start the fcoe_ctlr
+ * in a link_down state. The allows the user an opportunity to configure
+ * the FCoE Controller from sysfs before enabling the FCoE Controller.
+ *
+ * Creating in with this routine starts the FCoE Controller in Fabric
+ * mode. The user can change to VN2VN or another mode before enabling.
+ */
+static int fcoe_ctlr_alloc(struct net_device *netdev)
+{
+	return _fcoe_create(netdev, FIP_MODE_FABRIC,
+			    FCOE_CREATE_LINK_DOWN);
+}
+
+/**
+ * fcoe_link_ok() - Check if the link is OK for a local port
+ * @lport: The local port to check link on
+ *
+ * Returns: 0 if link is UP and OK, -1 if not
+ *
+ */
+static int fcoe_link_ok(struct fc_lport *lport)
+{
+	struct net_device *netdev = fcoe_netdev(lport);
+
+	if (netif_oper_up(netdev))
+		return 0;
+	return -1;
+}
+
+/**
+ * fcoe_percpu_clean() - Clear all pending skbs for an local port
+ * @lport: The local port whose skbs are to be cleared
+ *
+ * Must be called with fcoe_create_mutex held to single-thread completion.
+ *
+ * This flushes the pending skbs by flush the work item for each CPU. The work
+ * item on each possible CPU is flushed because we may have used the per-CPU
+ * struct of an offline CPU.
+ */
+static void fcoe_percpu_clean(struct fc_lport *lport)
+{
+	struct fcoe_percpu_s *pp;
+	unsigned int cpu;
+
+	for_each_possible_cpu(cpu) {
+		pp = &per_cpu(fcoe_percpu, cpu);
+
+		flush_work(&pp->work);
+	}
+}
+
+/**
+ * fcoe_reset() - Reset a local port
+ * @shost: The SCSI host associated with the local port to be reset
+ *
+ * Returns: Always 0 (return value required by FC transport template)
+ */
+static int fcoe_reset(struct Scsi_Host *shost)
+{
+	struct fc_lport *lport = shost_priv(shost);
+	struct fcoe_port *port = lport_priv(lport);
+	struct fcoe_interface *fcoe = port->priv;
+	struct fcoe_ctlr *ctlr = fcoe_to_ctlr(fcoe);
+	struct fcoe_ctlr_device *cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
+
+	fcoe_ctlr_link_down(ctlr);
+	fcoe_clean_pending_queue(ctlr->lp);
+
+	if (cdev->enabled != FCOE_CTLR_DISABLED &&
+	    !fcoe_link_ok(ctlr->lp))
+		fcoe_ctlr_link_up(ctlr);
+	return 0;
+}
+
+/**
+ * fcoe_hostlist_lookup_port() - Find the FCoE interface associated with a net device
+ * @netdev: The net device used as a key
+ *
+ * Locking: Must be called with the RNL mutex held.
+ *
+ * Returns: NULL or the FCoE interface
+ */
+static struct fcoe_interface *
+fcoe_hostlist_lookup_port(const struct net_device *netdev)
+{
+	struct fcoe_interface *fcoe;
+
+	list_for_each_entry(fcoe, &fcoe_hostlist, list) {
+		if (fcoe->netdev == netdev)
+			return fcoe;
+	}
+	return NULL;
+}
+
+/**
+ * fcoe_hostlist_lookup() - Find the local port associated with a
+ *			    given net device
+ * @netdev: The netdevice used as a key
+ *
+ * Locking: Must be called with the RTNL mutex held
+ *
+ * Returns: NULL or the local port
+ */
+static struct fc_lport *fcoe_hostlist_lookup(const struct net_device *netdev)
+{
+	struct fcoe_ctlr *ctlr;
+	struct fcoe_interface *fcoe;
+
+	fcoe = fcoe_hostlist_lookup_port(netdev);
+	ctlr = fcoe_to_ctlr(fcoe);
+	return (fcoe) ? ctlr->lp : NULL;
+}
+
+/**
+ * fcoe_hostlist_add() - Add the FCoE interface identified by a local
+ *			 port to the hostlist
+ * @lport: The local port that identifies the FCoE interface to be added
+ *
+ * Locking: must be called with the RTNL mutex held
+ *
+ * Returns: 0 for success
+ */
+static int fcoe_hostlist_add(const struct fc_lport *lport)
+{
+	struct fcoe_interface *fcoe;
+	struct fcoe_port *port;
+
+	fcoe = fcoe_hostlist_lookup_port(fcoe_netdev(lport));
+	if (!fcoe) {
+		port = lport_priv(lport);
+		fcoe = port->priv;
+		list_add_tail(&fcoe->list, &fcoe_hostlist);
+	}
+	return 0;
+}
+
+/**
+ * fcoe_hostlist_del() - Remove the FCoE interface identified by a local
+ *			 port to the hostlist
+ * @lport: The local port that identifies the FCoE interface to be added
+ *
+ * Locking: must be called with the RTNL mutex held
+ *
+ */
+static void fcoe_hostlist_del(const struct fc_lport *lport)
+{
+	struct fcoe_interface *fcoe;
+	struct fcoe_port *port;
+
+	port = lport_priv(lport);
+	fcoe = port->priv;
+	list_del(&fcoe->list);
+	return;
+}
+
+static struct fcoe_transport fcoe_sw_transport = {
+	.name = {FCOE_TRANSPORT_DEFAULT},
+	.attached = false,
+	.list = LIST_HEAD_INIT(fcoe_sw_transport.list),
+	.match = fcoe_match,
+	.alloc = fcoe_ctlr_alloc,
+	.create = fcoe_create,
+	.destroy = fcoe_destroy,
+	.enable = fcoe_enable,
+	.disable = fcoe_disable,
+};
+
+/**
+ * fcoe_init() - Initialize fcoe.ko
+ *
+ * Returns: 0 on success, or a negative value on failure
+ */
+static int __init fcoe_init(void)
+{
+	struct fcoe_percpu_s *p;
+	unsigned int cpu;
+	int rc = 0;
+
+	fcoe_wq = alloc_workqueue("fcoe", WQ_PERCPU, 0);
+	if (!fcoe_wq)
+		return -ENOMEM;
+
+	/* register as a fcoe transport */
+	rc = fcoe_transport_attach(&fcoe_sw_transport);
+	if (rc) {
+		printk(KERN_ERR "failed to register an fcoe transport, check "
+			"if libfcoe is loaded\n");
+		goto out_destroy;
+	}
+
+	mutex_lock(&fcoe_config_mutex);
+
+	for_each_possible_cpu(cpu) {
+		p = per_cpu_ptr(&fcoe_percpu, cpu);
+		INIT_WORK(&p->work, fcoe_receive_work);
+		skb_queue_head_init(&p->fcoe_rx_list);
+		local_lock_init(&p->lock);
+	}
+
+	/* Setup link change notification */
+	fcoe_dev_setup();
+
+	rc = fcoe_if_init();
+	if (rc)
+		goto out_free;
+
+	mutex_unlock(&fcoe_config_mutex);
+	return 0;
+
+out_free:
+	mutex_unlock(&fcoe_config_mutex);
+	fcoe_transport_detach(&fcoe_sw_transport);
+out_destroy:
+	destroy_workqueue(fcoe_wq);
+	return rc;
+}
+module_init(fcoe_init);
+
+/**
+ * fcoe_exit() - Clean up fcoe.ko
+ *
+ * Returns: 0 on success or a  negative value on failure
+ */
+static void __exit fcoe_exit(void)
+{
+	struct fcoe_interface *fcoe, *tmp;
+	struct fcoe_ctlr *ctlr;
+	struct fcoe_port *port;
+	unsigned int cpu;
+
+	mutex_lock(&fcoe_config_mutex);
+
+	fcoe_dev_cleanup();
+
+	/* releases the associated fcoe hosts */
+	rtnl_lock();
+	list_for_each_entry_safe(fcoe, tmp, &fcoe_hostlist, list) {
+		ctlr = fcoe_to_ctlr(fcoe);
+		port = lport_priv(ctlr->lp);
+		fcoe_hostlist_del(port->lport);
+		queue_work(fcoe_wq, &port->destroy_work);
+	}
+	rtnl_unlock();
+
+	for_each_possible_cpu(cpu)
+		fcoe_thread_cleanup_local(cpu);
+
+	mutex_unlock(&fcoe_config_mutex);
+
+	/*
+	 * destroy_work's may be chained but destroy_workqueue()
+	 * can take care of them. Just kill the fcoe_wq.
+	 */
+	destroy_workqueue(fcoe_wq);
+
+	/*
+	 * Detaching from the scsi transport must happen after all
+	 * destroys are done on the fcoe_wq. destroy_workqueue will
+	 * enusre the fcoe_wq is flushed.
+	 */
+	fcoe_if_exit();
+
+	/* detach from fcoe transport */
+	fcoe_transport_detach(&fcoe_sw_transport);
+}
+module_exit(fcoe_exit);
+
+/**
+ * fcoe_flogi_resp() - FCoE specific FLOGI and FDISC response handler
+ * @seq: active sequence in the FLOGI or FDISC exchange
+ * @fp: response frame, or error encoded in a pointer (timeout)
+ * @arg: pointer to the fcoe_ctlr structure
+ *
+ * This handles MAC address management for FCoE, then passes control on to
+ * the libfc FLOGI response handler.
+ */
+static void fcoe_flogi_resp(struct fc_seq *seq, struct fc_frame *fp, void *arg)
+{
+	struct fcoe_ctlr *fip = arg;
+	struct fc_exch *exch = fc_seq_exch(seq);
+	struct fc_lport *lport = exch->lp;
+	u8 *mac;
+
+	if (IS_ERR(fp))
+		goto done;
+
+	mac = fr_cb(fp)->granted_mac;
+	/* pre-FIP */
+	if (is_zero_ether_addr(mac))
+		fcoe_ctlr_recv_flogi(fip, lport, fp);
+	else
+		fcoe_update_src_mac(lport, mac);
+done:
+	fc_lport_flogi_resp(seq, fp, lport);
+}
+
+/**
+ * fcoe_logo_resp() - FCoE specific LOGO response handler
+ * @seq: active sequence in the LOGO exchange
+ * @fp: response frame, or error encoded in a pointer (timeout)
+ * @arg: pointer to the fcoe_ctlr structure
+ *
+ * This handles MAC address management for FCoE, then passes control on to
+ * the libfc LOGO response handler.
+ */
+static void fcoe_logo_resp(struct fc_seq *seq, struct fc_frame *fp, void *arg)
+{
+	struct fc_lport *lport = arg;
+	static u8 zero_mac[ETH_ALEN] = { 0 };
+
+	if (!IS_ERR(fp))
+		fcoe_update_src_mac(lport, zero_mac);
+	fc_lport_logo_resp(seq, fp, lport);
+}
+
+/*
+ * fcoe_elsct_send - FCoE specific ELS handler
+ *
+ * This does special case handling of FIP encapsualted ELS exchanges for FCoE,
+ * using FCoE specific response handlers and passing the FIP controller as
+ * the argument (the lport is still available from the exchange).
+ *
+ * Most of the work here is just handed off to the libfc routine.
+ */
+static struct fc_seq *fcoe_elsct_send(struct fc_lport *lport, u32 did,
+				      struct fc_frame *fp, unsigned int op,
+				      void (*resp)(struct fc_seq *,
+						   struct fc_frame *,
+						   void *),
+				      void *arg, u32 timeout)
+{
+	struct fcoe_port *port = lport_priv(lport);
+	struct fcoe_interface *fcoe = port->priv;
+	struct fcoe_ctlr *fip = fcoe_to_ctlr(fcoe);
+	struct fc_frame_header *fh = fc_frame_header_get(fp);
+
+	switch (op) {
+	case ELS_FLOGI:
+	case ELS_FDISC:
+		if (lport->point_to_multipoint)
+			break;
+		return fc_elsct_send(lport, did, fp, op, fcoe_flogi_resp,
+				     fip, timeout);
+	case ELS_LOGO:
+		/* only hook onto fabric logouts, not port logouts */
+		if (ntoh24(fh->fh_d_id) != FC_FID_FLOGI)
+			break;
+		return fc_elsct_send(lport, did, fp, op, fcoe_logo_resp,
+				     lport, timeout);
+	}
+	return fc_elsct_send(lport, did, fp, op, resp, arg, timeout);
+}
+
+/**
+ * fcoe_vport_create() - create an fc_host/scsi_host for a vport
+ * @vport: fc_vport object to create a new fc_host for
+ * @disabled: start the new fc_host in a disabled state by default?
+ *
+ * Returns: 0 for success
+ */
+static int fcoe_vport_create(struct fc_vport *vport, bool disabled)
+{
+	struct Scsi_Host *shost = vport_to_shost(vport);
+	struct fc_lport *n_port = shost_priv(shost);
+	struct fcoe_port *port = lport_priv(n_port);
+	struct fcoe_interface *fcoe = port->priv;
+	struct net_device *netdev = fcoe->netdev;
+	struct fc_lport *vn_port;
+	int rc;
+	char buf[32];
+
+	rc = fcoe_validate_vport_create(vport);
+	if (rc) {
+		fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
+		printk(KERN_ERR "fcoe: Failed to create vport, "
+			"WWPN (0x%s) already exists\n",
+			buf);
+		return rc;
+	}
+
+	mutex_lock(&fcoe_config_mutex);
+	rtnl_lock();
+	vn_port = fcoe_if_create(fcoe, &vport->dev, 1);
+	rtnl_unlock();
+	mutex_unlock(&fcoe_config_mutex);
+
+	if (IS_ERR(vn_port)) {
+		printk(KERN_ERR "fcoe: fcoe_vport_create(%s) failed\n",
+		       netdev->name);
+		return -EIO;
+	}
+
+	if (disabled) {
+		fc_vport_set_state(vport, FC_VPORT_DISABLED);
+	} else {
+		vn_port->boot_time = jiffies;
+		fc_fabric_login(vn_port);
+		fc_vport_setlink(vn_port);
+	}
+	return 0;
+}
+
+/**
+ * fcoe_vport_destroy() - destroy the fc_host/scsi_host for a vport
+ * @vport: fc_vport object that is being destroyed
+ *
+ * Returns: 0 for success
+ */
+static int fcoe_vport_destroy(struct fc_vport *vport)
+{
+	struct Scsi_Host *shost = vport_to_shost(vport);
+	struct fc_lport *n_port = shost_priv(shost);
+	struct fc_lport *vn_port = vport->dd_data;
+
+	mutex_lock(&n_port->lp_mutex);
+	list_del(&vn_port->list);
+	mutex_unlock(&n_port->lp_mutex);
+
+	mutex_lock(&fcoe_config_mutex);
+	rtnl_lock();
+	fcoe_if_destroy(vn_port);
+	rtnl_unlock();
+	mutex_unlock(&fcoe_config_mutex);
+
+	return 0;
+}
+
+/**
+ * fcoe_vport_remove() - remove attached vports
+ * @lport: lport for which the vports should be removed
+ */
+static void fcoe_vport_remove(struct fc_lport *lport)
+{
+	struct Scsi_Host *shost;
+	struct fc_host_attrs *fc_host;
+	unsigned long flags;
+	struct fc_vport *vport;
+	struct fc_vport *next_vport;
+
+	shost = lport->host;
+	fc_host = shost_to_fc_host(shost);
+
+	/* Loop through all the vports and mark them for deletion */
+	spin_lock_irqsave(shost->host_lock, flags);
+	list_for_each_entry_safe(vport, next_vport, &fc_host->vports, peers) {
+		if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) {
+			continue;
+		} else {
+			vport->flags |= FC_VPORT_DELETING;
+			queue_work(fc_host_work_q(shost),
+				   &vport->vport_delete_work);
+		}
+	}
+	spin_unlock_irqrestore(shost->host_lock, flags);
+
+	flush_workqueue(fc_host_work_q(shost));
+}
+
+/**
+ * fcoe_vport_disable() - change vport state
+ * @vport: vport to bring online/offline
+ * @disable: should the vport be disabled?
+ */
+static int fcoe_vport_disable(struct fc_vport *vport, bool disable)
+{
+	struct fc_lport *lport = vport->dd_data;
+
+	if (disable) {
+		fc_vport_set_state(vport, FC_VPORT_DISABLED);
+		fc_fabric_logoff(lport);
+	} else {
+		lport->boot_time = jiffies;
+		fc_fabric_login(lport);
+		fc_vport_setlink(lport);
+	}
+
+	return 0;
+}
+
+/**
+ * fcoe_set_vport_symbolic_name() - append vport string to symbolic name
+ * @vport: fc_vport with a new symbolic name string
+ *
+ * After generating a new symbolic name string, a new RSPN_ID request is
+ * sent to the name server.  There is no response handler, so if it fails
+ * for some reason it will not be retried.
+ */
+static void fcoe_set_vport_symbolic_name(struct fc_vport *vport)
+{
+	struct fc_lport *lport = vport->dd_data;
+	struct fc_frame *fp;
+	size_t len;
+
+	snprintf(fc_host_symbolic_name(lport->host), FC_SYMBOLIC_NAME_SIZE,
+		 "%s v%s over %s : %s", FCOE_NAME, FCOE_VERSION,
+		 fcoe_netdev(lport)->name, vport->symbolic_name);
+
+	if (lport->state != LPORT_ST_READY)
+		return;
+
+	len = strnlen(fc_host_symbolic_name(lport->host), 255);
+	fp = fc_frame_alloc(lport,
+			    sizeof(struct fc_ct_hdr) +
+			    sizeof(struct fc_ns_rspn) + len);
+	if (!fp)
+		return;
+	lport->tt.elsct_send(lport, FC_FID_DIR_SERV, fp, FC_NS_RSPN_ID,
+			     NULL, NULL, 3 * lport->r_a_tov);
+}
+
+static void fcoe_fcf_get_vlan_id(struct fcoe_fcf_device *fcf_dev)
+{
+	struct fcoe_ctlr_device *ctlr_dev =
+		fcoe_fcf_dev_to_ctlr_dev(fcf_dev);
+	struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev);
+	struct fcoe_interface *fcoe = fcoe_ctlr_priv(ctlr);
+
+	fcf_dev->vlan_id = vlan_dev_vlan_id(fcoe->netdev);
+}
+
+/**
+ * fcoe_set_port_id() - Callback from libfc when Port_ID is set.
+ * @lport: the local port
+ * @port_id: the port ID
+ * @fp: the received frame, if any, that caused the port_id to be set.
+ *
+ * This routine handles the case where we received a FLOGI and are
+ * entering point-to-point mode.  We need to call fcoe_ctlr_recv_flogi()
+ * so it can set the non-mapped mode and gateway address.
+ *
+ * The FLOGI LS_ACC is handled by fcoe_flogi_resp().
+ */
+static void fcoe_set_port_id(struct fc_lport *lport,
+			     u32 port_id, struct fc_frame *fp)
+{
+	struct fcoe_port *port = lport_priv(lport);
+	struct fcoe_interface *fcoe = port->priv;
+	struct fcoe_ctlr *ctlr = fcoe_to_ctlr(fcoe);
+
+	if (fp && fc_frame_payload_op(fp) == ELS_FLOGI)
+		fcoe_ctlr_recv_flogi(ctlr, lport, fp);
+}
diff --git a/drivers/scsi/fcoe/fcoe.h b/drivers/scsi/fcoe/fcoe.h
new file mode 100644
index 000000000..520c53512
--- /dev/null
+++ b/drivers/scsi/fcoe/fcoe.h
@@ -0,0 +1,93 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright(c) 2009 Intel Corporation. All rights reserved.
+ *
+ * Maintained at www.Open-FCoE.org
+ */
+
+#ifndef _FCOE_H_
+#define _FCOE_H_
+
+#include <linux/skbuff.h>
+#include <linux/kthread.h>
+
+#define FCOE_MAX_QUEUE_DEPTH	256
+#define FCOE_MIN_QUEUE_DEPTH	32
+
+#define FCOE_WORD_TO_BYTE	4
+
+#define FCOE_VERSION	"0.1"
+#define FCOE_NAME	"fcoe"
+#define FCOE_VENDOR	"Open-FCoE.org"
+
+#define FCOE_MAX_LUN		0xFFFF
+#define FCOE_MAX_FCP_TARGET	256
+
+#define FCOE_MAX_OUTSTANDING_COMMANDS	1024
+
+#define FCOE_MIN_XID		0x0000	/* the min xid supported by fcoe_sw */
+#define FCOE_MAX_XID		0x0FFF	/* the max xid supported by fcoe_sw */
+
+extern unsigned int fcoe_debug_logging;
+
+#define FCOE_LOGGING	    0x01 /* General logging, not categorized */
+#define FCOE_NETDEV_LOGGING 0x02 /* Netdevice logging */
+
+#define FCOE_CHECK_LOGGING(LEVEL, CMD)					\
+do {                                                            	\
+	if (unlikely(fcoe_debug_logging & LEVEL))			\
+		do {							\
+			CMD;						\
+		} while (0);						\
+} while (0)
+
+#define FCOE_DBG(fmt, args...)						\
+	FCOE_CHECK_LOGGING(FCOE_LOGGING,				\
+			   pr_info("fcoe: " fmt, ##args);)
+
+#define FCOE_NETDEV_DBG(netdev, fmt, args...)			\
+	FCOE_CHECK_LOGGING(FCOE_NETDEV_LOGGING,			\
+			   pr_info("fcoe: %s: " fmt,		\
+				   netdev->name, ##args);)
+
+/**
+ * struct fcoe_interface - A FCoE interface
+ * @list:	      Handle for a list of FCoE interfaces
+ * @netdev:	      The associated net device
+ * @fcoe_packet_type: FCoE packet type
+ * @fip_packet_type:  FIP packet type
+ * @oem:	      The offload exchange manager for all local port
+ *		      instances associated with this port
+ * @removed:	      Indicates fcoe interface removed from net device
+ * @priority:	      Priority for the FCoE packet (DCB)
+ * This structure is 1:1 with a net device.
+ */
+struct fcoe_interface {
+	struct list_head   list;
+	struct net_device  *netdev;
+	struct net_device  *realdev;
+	struct packet_type fcoe_packet_type;
+	struct packet_type fip_packet_type;
+	struct packet_type fip_vlan_packet_type;
+	struct fc_exch_mgr *oem;
+	u8	removed;
+	u8	priority;
+};
+
+#define fcoe_to_ctlr(x)						\
+	(struct fcoe_ctlr *)(((struct fcoe_ctlr *)(x)) - 1)
+
+#define fcoe_from_ctlr(x)			\
+	((struct fcoe_interface *)((x) + 1))
+
+/**
+ * fcoe_netdev() - Return the net device associated with a local port
+ * @lport: The local port to get the net device from
+ */
+static inline struct net_device *fcoe_netdev(const struct fc_lport *lport)
+{
+	return ((struct fcoe_interface *)
+			((struct fcoe_port *)lport_priv(lport))->priv)->netdev;
+}
+
+#endif /* _FCOE_H_ */
diff --git a/drivers/scsi/fcoe/fcoe_ctlr.c b/drivers/scsi/fcoe/fcoe_ctlr.c
new file mode 100644
index 000000000..496ddd45f
--- /dev/null
+++ b/drivers/scsi/fcoe/fcoe_ctlr.c
@@ -0,0 +1,3253 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2008-2009 Cisco Systems, Inc.  All rights reserved.
+ * Copyright (c) 2009 Intel Corporation.  All rights reserved.
+ *
+ * Maintained at www.Open-FCoE.org
+ */
+
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/spinlock.h>
+#include <linux/timer.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
+#include <linux/if_ether.h>
+#include <linux/if_vlan.h>
+#include <linux/errno.h>
+#include <linux/bitops.h>
+#include <linux/slab.h>
+#include <net/rtnetlink.h>
+
+#include <scsi/fc/fc_els.h>
+#include <scsi/fc/fc_fs.h>
+#include <scsi/fc/fc_fip.h>
+#include <scsi/fc/fc_encaps.h>
+#include <scsi/fc/fc_fcoe.h>
+#include <scsi/fc/fc_fcp.h>
+
+#include <scsi/libfc.h>
+#include <scsi/libfcoe.h>
+
+#include "libfcoe.h"
+
+#define	FCOE_CTLR_MIN_FKA	500		/* min keep alive (mS) */
+#define	FCOE_CTLR_DEF_FKA	FIP_DEF_FKA	/* default keep alive (mS) */
+
+static void fcoe_ctlr_timeout(struct timer_list *);
+static void fcoe_ctlr_timer_work(struct work_struct *);
+static void fcoe_ctlr_recv_work(struct work_struct *);
+static int fcoe_ctlr_flogi_retry(struct fcoe_ctlr *);
+
+static void fcoe_ctlr_vn_start(struct fcoe_ctlr *);
+static int fcoe_ctlr_vn_recv(struct fcoe_ctlr *, struct sk_buff *);
+static void fcoe_ctlr_vn_timeout(struct fcoe_ctlr *);
+static int fcoe_ctlr_vn_lookup(struct fcoe_ctlr *, u32, u8 *);
+
+static int fcoe_ctlr_vlan_recv(struct fcoe_ctlr *, struct sk_buff *);
+
+static u8 fcoe_all_fcfs[ETH_ALEN] = FIP_ALL_FCF_MACS;
+static u8 fcoe_all_enode[ETH_ALEN] = FIP_ALL_ENODE_MACS;
+static u8 fcoe_all_vn2vn[ETH_ALEN] = FIP_ALL_VN2VN_MACS;
+static u8 fcoe_all_p2p[ETH_ALEN] = FIP_ALL_P2P_MACS;
+
+static const char * const fcoe_ctlr_states[] = {
+	[FIP_ST_DISABLED] =	"DISABLED",
+	[FIP_ST_LINK_WAIT] =	"LINK_WAIT",
+	[FIP_ST_AUTO] =		"AUTO",
+	[FIP_ST_NON_FIP] =	"NON_FIP",
+	[FIP_ST_ENABLED] =	"ENABLED",
+	[FIP_ST_VNMP_START] =	"VNMP_START",
+	[FIP_ST_VNMP_PROBE1] =	"VNMP_PROBE1",
+	[FIP_ST_VNMP_PROBE2] =	"VNMP_PROBE2",
+	[FIP_ST_VNMP_CLAIM] =	"VNMP_CLAIM",
+	[FIP_ST_VNMP_UP] =	"VNMP_UP",
+};
+
+static const char *fcoe_ctlr_state(enum fip_state state)
+{
+	const char *cp = "unknown";
+
+	if (state < ARRAY_SIZE(fcoe_ctlr_states))
+		cp = fcoe_ctlr_states[state];
+	if (!cp)
+		cp = "unknown";
+	return cp;
+}
+
+/**
+ * fcoe_ctlr_set_state() - Set and do debug printing for the new FIP state.
+ * @fip: The FCoE controller
+ * @state: The new state
+ */
+static void fcoe_ctlr_set_state(struct fcoe_ctlr *fip, enum fip_state state)
+{
+	if (state == fip->state)
+		return;
+	if (fip->lp)
+		LIBFCOE_FIP_DBG(fip, "state %s -> %s\n",
+			fcoe_ctlr_state(fip->state), fcoe_ctlr_state(state));
+	fip->state = state;
+}
+
+/**
+ * fcoe_ctlr_mtu_valid() - Check if a FCF's MTU is valid
+ * @fcf: The FCF to check
+ *
+ * Return non-zero if FCF fcoe_size has been validated.
+ */
+static inline int fcoe_ctlr_mtu_valid(const struct fcoe_fcf *fcf)
+{
+	return (fcf->flags & FIP_FL_SOL) != 0;
+}
+
+/**
+ * fcoe_ctlr_fcf_usable() - Check if a FCF is usable
+ * @fcf: The FCF to check
+ *
+ * Return non-zero if the FCF is usable.
+ */
+static inline int fcoe_ctlr_fcf_usable(struct fcoe_fcf *fcf)
+{
+	u16 flags = FIP_FL_SOL | FIP_FL_AVAIL;
+
+	return (fcf->flags & flags) == flags;
+}
+
+/**
+ * fcoe_ctlr_map_dest() - Set flag and OUI for mapping destination addresses
+ * @fip: The FCoE controller
+ */
+static void fcoe_ctlr_map_dest(struct fcoe_ctlr *fip)
+{
+	if (fip->mode == FIP_MODE_VN2VN)
+		hton24(fip->dest_addr, FIP_VN_FC_MAP);
+	else
+		hton24(fip->dest_addr, FIP_DEF_FC_MAP);
+	hton24(fip->dest_addr + 3, 0);
+	fip->map_dest = 1;
+}
+
+/**
+ * fcoe_ctlr_init() - Initialize the FCoE Controller instance
+ * @fip: The FCoE controller to initialize
+ * @mode: FIP mode to set
+ */
+void fcoe_ctlr_init(struct fcoe_ctlr *fip, enum fip_mode mode)
+{
+	fcoe_ctlr_set_state(fip, FIP_ST_LINK_WAIT);
+	fip->mode = mode;
+	fip->fip_resp = false;
+	INIT_LIST_HEAD(&fip->fcfs);
+	mutex_init(&fip->ctlr_mutex);
+	spin_lock_init(&fip->ctlr_lock);
+	fip->flogi_oxid = FC_XID_UNKNOWN;
+	timer_setup(&fip->timer, fcoe_ctlr_timeout, 0);
+	INIT_WORK(&fip->timer_work, fcoe_ctlr_timer_work);
+	INIT_WORK(&fip->recv_work, fcoe_ctlr_recv_work);
+	skb_queue_head_init(&fip->fip_recv_list);
+}
+EXPORT_SYMBOL(fcoe_ctlr_init);
+
+/**
+ * fcoe_sysfs_fcf_add() - Add a fcoe_fcf{,_device} to a fcoe_ctlr{,_device}
+ * @new: The newly discovered FCF
+ *
+ * Called with fip->ctlr_mutex held
+ */
+static int fcoe_sysfs_fcf_add(struct fcoe_fcf *new)
+{
+	struct fcoe_ctlr *fip = new->fip;
+	struct fcoe_ctlr_device *ctlr_dev;
+	struct fcoe_fcf_device *temp, *fcf_dev;
+	int rc = -ENOMEM;
+
+	LIBFCOE_FIP_DBG(fip, "New FCF fab %16.16llx mac %pM\n",
+			new->fabric_name, new->fcf_mac);
+
+	temp = kzalloc_obj(*temp);
+	if (!temp)
+		goto out;
+
+	temp->fabric_name = new->fabric_name;
+	temp->switch_name = new->switch_name;
+	temp->fc_map = new->fc_map;
+	temp->vfid = new->vfid;
+	memcpy(temp->mac, new->fcf_mac, ETH_ALEN);
+	temp->priority = new->pri;
+	temp->fka_period = new->fka_period;
+	temp->selected = 0; /* default to unselected */
+
+	/*
+	 * If ctlr_dev doesn't exist then it means we're a libfcoe user
+	 * who doesn't use fcoe_syfs and didn't allocate a fcoe_ctlr_device.
+	 * fnic would be an example of a driver with this behavior. In this
+	 * case we want to add the fcoe_fcf to the fcoe_ctlr list, but we
+	 * don't want to make sysfs changes.
+	 */
+
+	ctlr_dev = fcoe_ctlr_to_ctlr_dev(fip);
+	if (ctlr_dev) {
+		mutex_lock(&ctlr_dev->lock);
+		fcf_dev = fcoe_fcf_device_add(ctlr_dev, temp);
+		if (unlikely(!fcf_dev)) {
+			rc = -ENOMEM;
+			mutex_unlock(&ctlr_dev->lock);
+			goto out;
+		}
+
+		/*
+		 * The fcoe_sysfs layer can return a CONNECTED fcf that
+		 * has a priv (fcf was never deleted) or a CONNECTED fcf
+		 * that doesn't have a priv (fcf was deleted). However,
+		 * libfcoe will always delete FCFs before trying to add
+		 * them. This is ensured because both recv_adv and
+		 * age_fcfs are protected by the the fcoe_ctlr's mutex.
+		 * This means that we should never get a FCF with a
+		 * non-NULL priv pointer.
+		 */
+		BUG_ON(fcf_dev->priv);
+
+		fcf_dev->priv = new;
+		new->fcf_dev = fcf_dev;
+		mutex_unlock(&ctlr_dev->lock);
+	}
+
+	list_add(&new->list, &fip->fcfs);
+	fip->fcf_count++;
+	rc = 0;
+
+out:
+	kfree(temp);
+	return rc;
+}
+
+/**
+ * fcoe_sysfs_fcf_del() - Remove a fcoe_fcf{,_device} to a fcoe_ctlr{,_device}
+ * @new: The FCF to be removed
+ *
+ * Called with fip->ctlr_mutex held
+ */
+static void fcoe_sysfs_fcf_del(struct fcoe_fcf *new)
+{
+	struct fcoe_ctlr *fip = new->fip;
+	struct fcoe_ctlr_device *cdev;
+	struct fcoe_fcf_device *fcf_dev;
+
+	list_del(&new->list);
+	fip->fcf_count--;
+
+	/*
+	 * If ctlr_dev doesn't exist then it means we're a libfcoe user
+	 * who doesn't use fcoe_syfs and didn't allocate a fcoe_ctlr_device
+	 * or a fcoe_fcf_device.
+	 *
+	 * fnic would be an example of a driver with this behavior. In this
+	 * case we want to remove the fcoe_fcf from the fcoe_ctlr list (above),
+	 * but we don't want to make sysfs changes.
+	 */
+	cdev = fcoe_ctlr_to_ctlr_dev(fip);
+	if (cdev) {
+		mutex_lock(&cdev->lock);
+		fcf_dev = fcoe_fcf_to_fcf_dev(new);
+		WARN_ON(!fcf_dev);
+		new->fcf_dev = NULL;
+		fcoe_fcf_device_delete(fcf_dev);
+		mutex_unlock(&cdev->lock);
+	}
+	kfree(new);
+}
+
+/**
+ * fcoe_ctlr_reset_fcfs() - Reset and free all FCFs for a controller
+ * @fip: The FCoE controller whose FCFs are to be reset
+ *
+ * Called with &fcoe_ctlr lock held.
+ */
+static void fcoe_ctlr_reset_fcfs(struct fcoe_ctlr *fip)
+{
+	struct fcoe_fcf *fcf;
+	struct fcoe_fcf *next;
+
+	fip->sel_fcf = NULL;
+	list_for_each_entry_safe(fcf, next, &fip->fcfs, list) {
+		fcoe_sysfs_fcf_del(fcf);
+	}
+	WARN_ON(fip->fcf_count);
+
+	fip->sel_time = 0;
+}
+
+/**
+ * fcoe_ctlr_destroy() - Disable and tear down a FCoE controller
+ * @fip: The FCoE controller to tear down
+ *
+ * This is called by FCoE drivers before freeing the &fcoe_ctlr.
+ *
+ * The receive handler will have been deleted before this to guarantee
+ * that no more recv_work will be scheduled.
+ *
+ * The timer routine will simply return once we set FIP_ST_DISABLED.
+ * This guarantees that no further timeouts or work will be scheduled.
+ */
+void fcoe_ctlr_destroy(struct fcoe_ctlr *fip)
+{
+	cancel_work_sync(&fip->recv_work);
+	skb_queue_purge(&fip->fip_recv_list);
+
+	mutex_lock(&fip->ctlr_mutex);
+	fcoe_ctlr_set_state(fip, FIP_ST_DISABLED);
+	fcoe_ctlr_reset_fcfs(fip);
+	mutex_unlock(&fip->ctlr_mutex);
+	timer_delete_sync(&fip->timer);
+	cancel_work_sync(&fip->timer_work);
+}
+EXPORT_SYMBOL(fcoe_ctlr_destroy);
+
+/**
+ * fcoe_ctlr_announce() - announce new FCF selection
+ * @fip: The FCoE controller
+ *
+ * Also sets the destination MAC for FCoE and control packets
+ *
+ * Called with neither ctlr_mutex nor ctlr_lock held.
+ */
+static void fcoe_ctlr_announce(struct fcoe_ctlr *fip)
+{
+	struct fcoe_fcf *sel;
+	struct fcoe_fcf *fcf;
+
+	mutex_lock(&fip->ctlr_mutex);
+	spin_lock_bh(&fip->ctlr_lock);
+
+	kfree_skb(fip->flogi_req);
+	fip->flogi_req = NULL;
+	list_for_each_entry(fcf, &fip->fcfs, list)
+		fcf->flogi_sent = 0;
+
+	spin_unlock_bh(&fip->ctlr_lock);
+	sel = fip->sel_fcf;
+
+	if (sel && ether_addr_equal(sel->fcf_mac, fip->dest_addr))
+		goto unlock;
+	if (!is_zero_ether_addr(fip->dest_addr)) {
+		printk(KERN_NOTICE "libfcoe: host%d: "
+		       "FIP Fibre-Channel Forwarder MAC %pM deselected\n",
+		       fip->lp->host->host_no, fip->dest_addr);
+		eth_zero_addr(fip->dest_addr);
+	}
+	if (sel) {
+		printk(KERN_INFO "libfcoe: host%d: FIP selected "
+		       "Fibre-Channel Forwarder MAC %pM\n",
+		       fip->lp->host->host_no, sel->fcf_mac);
+		memcpy(fip->dest_addr, sel->fcoe_mac, ETH_ALEN);
+		fip->map_dest = 0;
+	}
+unlock:
+	mutex_unlock(&fip->ctlr_mutex);
+}
+
+/**
+ * fcoe_ctlr_fcoe_size() - Return the maximum FCoE size required for VN_Port
+ * @fip: The FCoE controller to get the maximum FCoE size from
+ *
+ * Returns the maximum packet size including the FCoE header and trailer,
+ * but not including any Ethernet or VLAN headers.
+ */
+static inline u32 fcoe_ctlr_fcoe_size(struct fcoe_ctlr *fip)
+{
+	/*
+	 * Determine the max FCoE frame size allowed, including
+	 * FCoE header and trailer.
+	 * Note:  lp->mfs is currently the payload size, not the frame size.
+	 */
+	return fip->lp->mfs + sizeof(struct fc_frame_header) +
+		sizeof(struct fcoe_hdr) + sizeof(struct fcoe_crc_eof);
+}
+
+/**
+ * fcoe_ctlr_solicit() - Send a FIP solicitation
+ * @fip: The FCoE controller to send the solicitation on
+ * @fcf: The destination FCF (if NULL, a multicast solicitation is sent)
+ */
+static void fcoe_ctlr_solicit(struct fcoe_ctlr *fip, struct fcoe_fcf *fcf)
+{
+	struct sk_buff *skb;
+	struct fip_sol {
+		struct ethhdr eth;
+		struct fip_header fip;
+		struct {
+			struct fip_mac_desc mac;
+			struct fip_wwn_desc wwnn;
+			struct fip_size_desc size;
+		} __packed desc;
+	}  __packed * sol;
+	u32 fcoe_size;
+
+	skb = dev_alloc_skb(sizeof(*sol));
+	if (!skb)
+		return;
+
+	sol = (struct fip_sol *)skb->data;
+
+	memset(sol, 0, sizeof(*sol));
+	memcpy(sol->eth.h_dest, fcf ? fcf->fcf_mac : fcoe_all_fcfs, ETH_ALEN);
+	memcpy(sol->eth.h_source, fip->ctl_src_addr, ETH_ALEN);
+	sol->eth.h_proto = htons(ETH_P_FIP);
+
+	sol->fip.fip_ver = FIP_VER_ENCAPS(FIP_VER);
+	sol->fip.fip_op = htons(FIP_OP_DISC);
+	sol->fip.fip_subcode = FIP_SC_SOL;
+	sol->fip.fip_dl_len = htons(sizeof(sol->desc) / FIP_BPW);
+	sol->fip.fip_flags = htons(FIP_FL_FPMA);
+	if (fip->spma)
+		sol->fip.fip_flags |= htons(FIP_FL_SPMA);
+
+	sol->desc.mac.fd_desc.fip_dtype = FIP_DT_MAC;
+	sol->desc.mac.fd_desc.fip_dlen = sizeof(sol->desc.mac) / FIP_BPW;
+	memcpy(sol->desc.mac.fd_mac, fip->ctl_src_addr, ETH_ALEN);
+
+	sol->desc.wwnn.fd_desc.fip_dtype = FIP_DT_NAME;
+	sol->desc.wwnn.fd_desc.fip_dlen = sizeof(sol->desc.wwnn) / FIP_BPW;
+	put_unaligned_be64(fip->lp->wwnn, &sol->desc.wwnn.fd_wwn);
+
+	fcoe_size = fcoe_ctlr_fcoe_size(fip);
+	sol->desc.size.fd_desc.fip_dtype = FIP_DT_FCOE_SIZE;
+	sol->desc.size.fd_desc.fip_dlen = sizeof(sol->desc.size) / FIP_BPW;
+	sol->desc.size.fd_size = htons(fcoe_size);
+
+	skb_put(skb, sizeof(*sol));
+	skb->protocol = htons(ETH_P_FIP);
+	skb->priority = fip->priority;
+	skb_reset_mac_header(skb);
+	skb_reset_network_header(skb);
+	fip->send(fip, skb);
+
+	if (!fcf)
+		fip->sol_time = jiffies;
+}
+
+/**
+ * fcoe_ctlr_link_up() - Start FCoE controller
+ * @fip: The FCoE controller to start
+ *
+ * Called from the LLD when the network link is ready.
+ */
+void fcoe_ctlr_link_up(struct fcoe_ctlr *fip)
+{
+	mutex_lock(&fip->ctlr_mutex);
+	if (fip->state == FIP_ST_NON_FIP || fip->state == FIP_ST_AUTO) {
+		mutex_unlock(&fip->ctlr_mutex);
+		fc_linkup(fip->lp);
+	} else if (fip->state == FIP_ST_LINK_WAIT) {
+		if (fip->mode == FIP_MODE_NON_FIP)
+			fcoe_ctlr_set_state(fip, FIP_ST_NON_FIP);
+		else
+			fcoe_ctlr_set_state(fip, FIP_ST_AUTO);
+		switch (fip->mode) {
+		default:
+			LIBFCOE_FIP_DBG(fip, "invalid mode %d\n", fip->mode);
+			fallthrough;
+		case FIP_MODE_AUTO:
+			LIBFCOE_FIP_DBG(fip, "%s", "setting AUTO mode.\n");
+			fallthrough;
+		case FIP_MODE_FABRIC:
+		case FIP_MODE_NON_FIP:
+			mutex_unlock(&fip->ctlr_mutex);
+			fc_linkup(fip->lp);
+			fcoe_ctlr_solicit(fip, NULL);
+			break;
+		case FIP_MODE_VN2VN:
+			fcoe_ctlr_vn_start(fip);
+			mutex_unlock(&fip->ctlr_mutex);
+			fc_linkup(fip->lp);
+			break;
+		}
+	} else
+		mutex_unlock(&fip->ctlr_mutex);
+}
+EXPORT_SYMBOL(fcoe_ctlr_link_up);
+
+/**
+ * fcoe_ctlr_reset() - Reset a FCoE controller
+ * @fip:       The FCoE controller to reset
+ */
+static void fcoe_ctlr_reset(struct fcoe_ctlr *fip)
+{
+	fcoe_ctlr_reset_fcfs(fip);
+	timer_delete(&fip->timer);
+	fip->ctlr_ka_time = 0;
+	fip->port_ka_time = 0;
+	fip->sol_time = 0;
+	fip->flogi_oxid = FC_XID_UNKNOWN;
+	fcoe_ctlr_map_dest(fip);
+}
+
+/**
+ * fcoe_ctlr_link_down() - Stop a FCoE controller
+ * @fip: The FCoE controller to be stopped
+ *
+ * Returns non-zero if the link was up and now isn't.
+ *
+ * Called from the LLD when the network link is not ready.
+ * There may be multiple calls while the link is down.
+ */
+int fcoe_ctlr_link_down(struct fcoe_ctlr *fip)
+{
+	int link_dropped;
+
+	LIBFCOE_FIP_DBG(fip, "link down.\n");
+	mutex_lock(&fip->ctlr_mutex);
+	fcoe_ctlr_reset(fip);
+	link_dropped = fip->state != FIP_ST_LINK_WAIT;
+	fcoe_ctlr_set_state(fip, FIP_ST_LINK_WAIT);
+	mutex_unlock(&fip->ctlr_mutex);
+
+	if (link_dropped)
+		fc_linkdown(fip->lp);
+	return link_dropped;
+}
+EXPORT_SYMBOL(fcoe_ctlr_link_down);
+
+/**
+ * fcoe_ctlr_send_keep_alive() - Send a keep-alive to the selected FCF
+ * @fip:   The FCoE controller to send the FKA on
+ * @lport: libfc fc_lport to send from
+ * @ports: 0 for controller keep-alive, 1 for port keep-alive
+ * @sa:	   The source MAC address
+ *
+ * A controller keep-alive is sent every fka_period (typically 8 seconds).
+ * The source MAC is the native MAC address.
+ *
+ * A port keep-alive is sent every 90 seconds while logged in.
+ * The source MAC is the assigned mapped source address.
+ * The destination is the FCF's F-port.
+ */
+static void fcoe_ctlr_send_keep_alive(struct fcoe_ctlr *fip,
+				      struct fc_lport *lport,
+				      int ports, u8 *sa)
+{
+	struct sk_buff *skb;
+	struct fip_kal {
+		struct ethhdr eth;
+		struct fip_header fip;
+		struct fip_mac_desc mac;
+	} __packed * kal;
+	struct fip_vn_desc *vn;
+	u32 len;
+	struct fc_lport *lp;
+	struct fcoe_fcf *fcf;
+
+	fcf = fip->sel_fcf;
+	lp = fip->lp;
+	if (!fcf || (ports && !lp->port_id))
+		return;
+
+	len = sizeof(*kal) + ports * sizeof(*vn);
+	skb = dev_alloc_skb(len);
+	if (!skb)
+		return;
+
+	kal = (struct fip_kal *)skb->data;
+	memset(kal, 0, len);
+	memcpy(kal->eth.h_dest, fcf->fcf_mac, ETH_ALEN);
+	memcpy(kal->eth.h_source, sa, ETH_ALEN);
+	kal->eth.h_proto = htons(ETH_P_FIP);
+
+	kal->fip.fip_ver = FIP_VER_ENCAPS(FIP_VER);
+	kal->fip.fip_op = htons(FIP_OP_CTRL);
+	kal->fip.fip_subcode = FIP_SC_KEEP_ALIVE;
+	kal->fip.fip_dl_len = htons((sizeof(kal->mac) +
+				     ports * sizeof(*vn)) / FIP_BPW);
+	kal->fip.fip_flags = htons(FIP_FL_FPMA);
+	if (fip->spma)
+		kal->fip.fip_flags |= htons(FIP_FL_SPMA);
+
+	kal->mac.fd_desc.fip_dtype = FIP_DT_MAC;
+	kal->mac.fd_desc.fip_dlen = sizeof(kal->mac) / FIP_BPW;
+	memcpy(kal->mac.fd_mac, fip->ctl_src_addr, ETH_ALEN);
+	if (ports) {
+		vn = (struct fip_vn_desc *)(kal + 1);
+		vn->fd_desc.fip_dtype = FIP_DT_VN_ID;
+		vn->fd_desc.fip_dlen = sizeof(*vn) / FIP_BPW;
+		memcpy(vn->fd_mac, fip->get_src_addr(lport), ETH_ALEN);
+		hton24(vn->fd_fc_id, lport->port_id);
+		put_unaligned_be64(lport->wwpn, &vn->fd_wwpn);
+	}
+	skb_put(skb, len);
+	skb->protocol = htons(ETH_P_FIP);
+	skb->priority = fip->priority;
+	skb_reset_mac_header(skb);
+	skb_reset_network_header(skb);
+	fip->send(fip, skb);
+}
+
+/**
+ * fcoe_ctlr_encaps() - Encapsulate an ELS frame for FIP, without sending it
+ * @fip:   The FCoE controller for the ELS frame
+ * @lport: The local port
+ * @dtype: The FIP descriptor type for the frame
+ * @skb:   The FCoE ELS frame including FC header but no FCoE headers
+ * @d_id:  The destination port ID.
+ *
+ * Returns non-zero error code on failure.
+ *
+ * The caller must check that the length is a multiple of 4.
+ *
+ * The @skb must have enough headroom (28 bytes) and tailroom (8 bytes).
+ * Headroom includes the FIP encapsulation description, FIP header, and
+ * Ethernet header.  The tailroom is for the FIP MAC descriptor.
+ */
+static int fcoe_ctlr_encaps(struct fcoe_ctlr *fip, struct fc_lport *lport,
+			    u8 dtype, struct sk_buff *skb, u32 d_id)
+{
+	struct fip_encaps_head {
+		struct ethhdr eth;
+		struct fip_header fip;
+		struct fip_encaps encaps;
+	} __packed * cap;
+	struct fc_frame_header *fh;
+	struct fip_mac_desc *mac;
+	struct fcoe_fcf *fcf;
+	size_t dlen;
+	u16 fip_flags;
+	u8 op;
+
+	fh = (struct fc_frame_header *)skb->data;
+	op = *(u8 *)(fh + 1);
+	dlen = sizeof(struct fip_encaps) + skb->len;	/* len before push */
+	cap = skb_push(skb, sizeof(*cap));
+	memset(cap, 0, sizeof(*cap));
+
+	if (lport->point_to_multipoint) {
+		if (fcoe_ctlr_vn_lookup(fip, d_id, cap->eth.h_dest))
+			return -ENODEV;
+		fip_flags = 0;
+	} else {
+		fcf = fip->sel_fcf;
+		if (!fcf)
+			return -ENODEV;
+		fip_flags = fcf->flags;
+		fip_flags &= fip->spma ? FIP_FL_SPMA | FIP_FL_FPMA :
+					 FIP_FL_FPMA;
+		if (!fip_flags)
+			return -ENODEV;
+		memcpy(cap->eth.h_dest, fcf->fcf_mac, ETH_ALEN);
+	}
+	memcpy(cap->eth.h_source, fip->ctl_src_addr, ETH_ALEN);
+	cap->eth.h_proto = htons(ETH_P_FIP);
+
+	cap->fip.fip_ver = FIP_VER_ENCAPS(FIP_VER);
+	cap->fip.fip_op = htons(FIP_OP_LS);
+	if (op == ELS_LS_ACC || op == ELS_LS_RJT)
+		cap->fip.fip_subcode = FIP_SC_REP;
+	else
+		cap->fip.fip_subcode = FIP_SC_REQ;
+	cap->fip.fip_flags = htons(fip_flags);
+
+	cap->encaps.fd_desc.fip_dtype = dtype;
+	cap->encaps.fd_desc.fip_dlen = dlen / FIP_BPW;
+
+	if (op != ELS_LS_RJT) {
+		dlen += sizeof(*mac);
+		mac = skb_put_zero(skb, sizeof(*mac));
+		mac->fd_desc.fip_dtype = FIP_DT_MAC;
+		mac->fd_desc.fip_dlen = sizeof(*mac) / FIP_BPW;
+		if (dtype != FIP_DT_FLOGI && dtype != FIP_DT_FDISC) {
+			memcpy(mac->fd_mac, fip->get_src_addr(lport), ETH_ALEN);
+		} else if (fip->mode == FIP_MODE_VN2VN) {
+			hton24(mac->fd_mac, FIP_VN_FC_MAP);
+			hton24(mac->fd_mac + 3, fip->port_id);
+		} else if (fip_flags & FIP_FL_SPMA) {
+			LIBFCOE_FIP_DBG(fip, "FLOGI/FDISC sent with SPMA\n");
+			memcpy(mac->fd_mac, fip->ctl_src_addr, ETH_ALEN);
+		} else {
+			LIBFCOE_FIP_DBG(fip, "FLOGI/FDISC sent with FPMA\n");
+			/* FPMA only FLOGI.  Must leave the MAC desc zeroed. */
+		}
+	}
+	cap->fip.fip_dl_len = htons(dlen / FIP_BPW);
+
+	skb->protocol = htons(ETH_P_FIP);
+	skb->priority = fip->priority;
+	skb_reset_mac_header(skb);
+	skb_reset_network_header(skb);
+	return 0;
+}
+
+/**
+ * fcoe_ctlr_els_send() - Send an ELS frame encapsulated by FIP if appropriate.
+ * @fip:	FCoE controller.
+ * @lport:	libfc fc_lport to send from
+ * @skb:	FCoE ELS frame including FC header but no FCoE headers.
+ *
+ * Returns a non-zero error code if the frame should not be sent.
+ * Returns zero if the caller should send the frame with FCoE encapsulation.
+ *
+ * The caller must check that the length is a multiple of 4.
+ * The SKB must have enough headroom (28 bytes) and tailroom (8 bytes).
+ * The the skb must also be an fc_frame.
+ *
+ * This is called from the lower-level driver with spinlocks held,
+ * so we must not take a mutex here.
+ */
+int fcoe_ctlr_els_send(struct fcoe_ctlr *fip, struct fc_lport *lport,
+		       struct sk_buff *skb)
+{
+	struct fc_frame *fp;
+	struct fc_frame_header *fh;
+	u16 old_xid;
+	u8 op;
+	u8 mac[ETH_ALEN];
+
+	fp = container_of(skb, struct fc_frame, skb);
+	fh = (struct fc_frame_header *)skb->data;
+	op = *(u8 *)(fh + 1);
+
+	if (op == ELS_FLOGI && fip->mode != FIP_MODE_VN2VN) {
+		old_xid = fip->flogi_oxid;
+		fip->flogi_oxid = ntohs(fh->fh_ox_id);
+		if (fip->state == FIP_ST_AUTO) {
+			if (old_xid == FC_XID_UNKNOWN)
+				fip->flogi_count = 0;
+			fip->flogi_count++;
+			if (fip->flogi_count < 3)
+				goto drop;
+			fcoe_ctlr_map_dest(fip);
+			return 0;
+		}
+		if (fip->state == FIP_ST_NON_FIP)
+			fcoe_ctlr_map_dest(fip);
+	}
+
+	if (fip->state == FIP_ST_NON_FIP)
+		return 0;
+	if (!fip->sel_fcf && fip->mode != FIP_MODE_VN2VN)
+		goto drop;
+	switch (op) {
+	case ELS_FLOGI:
+		op = FIP_DT_FLOGI;
+		if (fip->mode == FIP_MODE_VN2VN)
+			break;
+		spin_lock_bh(&fip->ctlr_lock);
+		kfree_skb(fip->flogi_req);
+		fip->flogi_req = skb;
+		fip->flogi_req_send = 1;
+		spin_unlock_bh(&fip->ctlr_lock);
+		schedule_work(&fip->timer_work);
+		return -EINPROGRESS;
+	case ELS_FDISC:
+		if (ntoh24(fh->fh_s_id))
+			return 0;
+		op = FIP_DT_FDISC;
+		break;
+	case ELS_LOGO:
+		if (fip->mode == FIP_MODE_VN2VN) {
+			if (fip->state != FIP_ST_VNMP_UP)
+				goto drop;
+			if (ntoh24(fh->fh_d_id) == FC_FID_FLOGI)
+				goto drop;
+		} else {
+			if (fip->state != FIP_ST_ENABLED)
+				return 0;
+			if (ntoh24(fh->fh_d_id) != FC_FID_FLOGI)
+				return 0;
+		}
+		op = FIP_DT_LOGO;
+		break;
+	case ELS_LS_ACC:
+		/*
+		 * If non-FIP, we may have gotten an SID by accepting an FLOGI
+		 * from a point-to-point connection.  Switch to using
+		 * the source mac based on the SID.  The destination
+		 * MAC in this case would have been set by receiving the
+		 * FLOGI.
+		 */
+		if (fip->state == FIP_ST_NON_FIP) {
+			if (fip->flogi_oxid == FC_XID_UNKNOWN)
+				return 0;
+			fip->flogi_oxid = FC_XID_UNKNOWN;
+			fc_fcoe_set_mac(mac, fh->fh_d_id);
+			fip->update_mac(lport, mac);
+		}
+		fallthrough;
+	case ELS_LS_RJT:
+		op = fr_encaps(fp);
+		if (op)
+			break;
+		return 0;
+	default:
+		if (fip->state != FIP_ST_ENABLED &&
+		    fip->state != FIP_ST_VNMP_UP)
+			goto drop;
+		return 0;
+	}
+	LIBFCOE_FIP_DBG(fip, "els_send op %u d_id %x\n",
+			op, ntoh24(fh->fh_d_id));
+	if (fcoe_ctlr_encaps(fip, lport, op, skb, ntoh24(fh->fh_d_id)))
+		goto drop;
+	fip->send(fip, skb);
+	return -EINPROGRESS;
+drop:
+	LIBFCOE_FIP_DBG(fip, "drop els_send op %u d_id %x\n",
+			op, ntoh24(fh->fh_d_id));
+	kfree_skb(skb);
+	return -EINVAL;
+}
+EXPORT_SYMBOL(fcoe_ctlr_els_send);
+
+/**
+ * fcoe_ctlr_age_fcfs() - Reset and free all old FCFs for a controller
+ * @fip: The FCoE controller to free FCFs on
+ *
+ * Called with lock held and preemption disabled.
+ *
+ * An FCF is considered old if we have missed two advertisements.
+ * That is, there have been no valid advertisement from it for 2.5
+ * times its keep-alive period.
+ *
+ * In addition, determine the time when an FCF selection can occur.
+ *
+ * Also, increment the MissDiscAdvCount when no advertisement is received
+ * for the corresponding FCF for 1.5 * FKA_ADV_PERIOD (FC-BB-5 LESB).
+ *
+ * Returns the time in jiffies for the next call.
+ */
+static unsigned long fcoe_ctlr_age_fcfs(struct fcoe_ctlr *fip)
+{
+	struct fcoe_fcf *fcf;
+	struct fcoe_fcf *next;
+	unsigned long next_timer = jiffies + msecs_to_jiffies(FIP_VN_KA_PERIOD);
+	unsigned long deadline;
+	unsigned long sel_time = 0;
+	struct list_head del_list;
+
+	INIT_LIST_HEAD(&del_list);
+
+	list_for_each_entry_safe(fcf, next, &fip->fcfs, list) {
+		deadline = fcf->time + fcf->fka_period + fcf->fka_period / 2;
+		if (fip->sel_fcf == fcf) {
+			if (time_after(jiffies, deadline)) {
+				u64 miss_cnt;
+
+				miss_cnt = this_cpu_inc_return(fip->lp->stats->MissDiscAdvCount);
+				printk(KERN_INFO "libfcoe: host%d: "
+				       "Missing Discovery Advertisement "
+				       "for fab %16.16llx count %lld\n",
+				       fip->lp->host->host_no, fcf->fabric_name,
+				       miss_cnt);
+			} else if (time_after(next_timer, deadline))
+				next_timer = deadline;
+		}
+
+		deadline += fcf->fka_period;
+		if (time_after_eq(jiffies, deadline)) {
+			if (fip->sel_fcf == fcf)
+				fip->sel_fcf = NULL;
+			/*
+			 * Move to delete list so we can call
+			 * fcoe_sysfs_fcf_del (which can sleep)
+			 * after the put_cpu().
+			 */
+			list_del(&fcf->list);
+			list_add(&fcf->list, &del_list);
+			this_cpu_inc(fip->lp->stats->VLinkFailureCount);
+		} else {
+			if (time_after(next_timer, deadline))
+				next_timer = deadline;
+			if (fcoe_ctlr_mtu_valid(fcf) &&
+			    (!sel_time || time_before(sel_time, fcf->time)))
+				sel_time = fcf->time;
+		}
+	}
+
+	list_for_each_entry_safe(fcf, next, &del_list, list) {
+		/* Removes fcf from current list */
+		fcoe_sysfs_fcf_del(fcf);
+	}
+
+	if (sel_time && !fip->sel_fcf && !fip->sel_time) {
+		sel_time += msecs_to_jiffies(FCOE_CTLR_START_DELAY);
+		fip->sel_time = sel_time;
+	}
+
+	return next_timer;
+}
+
+/**
+ * fcoe_ctlr_parse_adv() - Decode a FIP advertisement into a new FCF entry
+ * @fip: The FCoE controller receiving the advertisement
+ * @skb: The received FIP advertisement frame
+ * @fcf: The resulting FCF entry
+ *
+ * Returns zero on a valid parsed advertisement,
+ * otherwise returns non zero value.
+ */
+static int fcoe_ctlr_parse_adv(struct fcoe_ctlr *fip,
+			       struct sk_buff *skb, struct fcoe_fcf *fcf)
+{
+	struct fip_header *fiph;
+	struct fip_desc *desc = NULL;
+	struct fip_wwn_desc *wwn;
+	struct fip_fab_desc *fab;
+	struct fip_fka_desc *fka;
+	unsigned long t;
+	size_t rlen;
+	size_t dlen;
+	u32 desc_mask;
+
+	memset(fcf, 0, sizeof(*fcf));
+	fcf->fka_period = msecs_to_jiffies(FCOE_CTLR_DEF_FKA);
+
+	fiph = (struct fip_header *)skb->data;
+	fcf->flags = ntohs(fiph->fip_flags);
+
+	/*
+	 * mask of required descriptors. validating each one clears its bit.
+	 */
+	desc_mask = BIT(FIP_DT_PRI) | BIT(FIP_DT_MAC) | BIT(FIP_DT_NAME) |
+			BIT(FIP_DT_FAB) | BIT(FIP_DT_FKA);
+
+	rlen = ntohs(fiph->fip_dl_len) * 4;
+	if (rlen + sizeof(*fiph) > skb->len)
+		return -EINVAL;
+
+	desc = (struct fip_desc *)(fiph + 1);
+	while (rlen > 0) {
+		dlen = desc->fip_dlen * FIP_BPW;
+		if (dlen < sizeof(*desc) || dlen > rlen)
+			return -EINVAL;
+		/* Drop Adv if there are duplicate critical descriptors */
+		if ((desc->fip_dtype < 32) &&
+		    !(desc_mask & 1U << desc->fip_dtype)) {
+			LIBFCOE_FIP_DBG(fip, "Duplicate Critical "
+					"Descriptors in FIP adv\n");
+			return -EINVAL;
+		}
+		switch (desc->fip_dtype) {
+		case FIP_DT_PRI:
+			if (dlen != sizeof(struct fip_pri_desc))
+				goto len_err;
+			fcf->pri = ((struct fip_pri_desc *)desc)->fd_pri;
+			desc_mask &= ~BIT(FIP_DT_PRI);
+			break;
+		case FIP_DT_MAC:
+			if (dlen != sizeof(struct fip_mac_desc))
+				goto len_err;
+			memcpy(fcf->fcf_mac,
+			       ((struct fip_mac_desc *)desc)->fd_mac,
+			       ETH_ALEN);
+			memcpy(fcf->fcoe_mac, fcf->fcf_mac, ETH_ALEN);
+			if (!is_valid_ether_addr(fcf->fcf_mac)) {
+				LIBFCOE_FIP_DBG(fip,
+					"Invalid MAC addr %pM in FIP adv\n",
+					fcf->fcf_mac);
+				return -EINVAL;
+			}
+			desc_mask &= ~BIT(FIP_DT_MAC);
+			break;
+		case FIP_DT_NAME:
+			if (dlen != sizeof(struct fip_wwn_desc))
+				goto len_err;
+			wwn = (struct fip_wwn_desc *)desc;
+			fcf->switch_name = get_unaligned_be64(&wwn->fd_wwn);
+			desc_mask &= ~BIT(FIP_DT_NAME);
+			break;
+		case FIP_DT_FAB:
+			if (dlen != sizeof(struct fip_fab_desc))
+				goto len_err;
+			fab = (struct fip_fab_desc *)desc;
+			fcf->fabric_name = get_unaligned_be64(&fab->fd_wwn);
+			fcf->vfid = ntohs(fab->fd_vfid);
+			fcf->fc_map = ntoh24(fab->fd_map);
+			desc_mask &= ~BIT(FIP_DT_FAB);
+			break;
+		case FIP_DT_FKA:
+			if (dlen != sizeof(struct fip_fka_desc))
+				goto len_err;
+			fka = (struct fip_fka_desc *)desc;
+			if (fka->fd_flags & FIP_FKA_ADV_D)
+				fcf->fd_flags = 1;
+			t = ntohl(fka->fd_fka_period);
+			if (t >= FCOE_CTLR_MIN_FKA)
+				fcf->fka_period = msecs_to_jiffies(t);
+			desc_mask &= ~BIT(FIP_DT_FKA);
+			break;
+		case FIP_DT_MAP_OUI:
+		case FIP_DT_FCOE_SIZE:
+		case FIP_DT_FLOGI:
+		case FIP_DT_FDISC:
+		case FIP_DT_LOGO:
+		case FIP_DT_ELP:
+		default:
+			LIBFCOE_FIP_DBG(fip, "unexpected descriptor type %x "
+					"in FIP adv\n", desc->fip_dtype);
+			/* standard says ignore unknown descriptors >= 128 */
+			if (desc->fip_dtype < FIP_DT_NON_CRITICAL)
+				return -EINVAL;
+			break;
+		}
+		desc = (struct fip_desc *)((char *)desc + dlen);
+		rlen -= dlen;
+	}
+	if (!fcf->fc_map || (fcf->fc_map & 0x10000))
+		return -EINVAL;
+	if (!fcf->switch_name)
+		return -EINVAL;
+	if (desc_mask) {
+		LIBFCOE_FIP_DBG(fip, "adv missing descriptors mask %x\n",
+				desc_mask);
+		return -EINVAL;
+	}
+	return 0;
+
+len_err:
+	LIBFCOE_FIP_DBG(fip, "FIP length error in descriptor type %x len %zu\n",
+			desc->fip_dtype, dlen);
+	return -EINVAL;
+}
+
+/**
+ * fcoe_ctlr_recv_adv() - Handle an incoming advertisement
+ * @fip: The FCoE controller receiving the advertisement
+ * @skb: The received FIP packet
+ */
+static void fcoe_ctlr_recv_adv(struct fcoe_ctlr *fip, struct sk_buff *skb)
+{
+	struct fcoe_fcf *fcf;
+	struct fcoe_fcf new;
+	unsigned long sol_tov = msecs_to_jiffies(FCOE_CTLR_SOL_TOV);
+	int first = 0;
+	int mtu_valid;
+	int found = 0;
+	int rc = 0;
+
+	if (fcoe_ctlr_parse_adv(fip, skb, &new))
+		return;
+
+	mutex_lock(&fip->ctlr_mutex);
+	first = list_empty(&fip->fcfs);
+	list_for_each_entry(fcf, &fip->fcfs, list) {
+		if (fcf->switch_name == new.switch_name &&
+		    fcf->fabric_name == new.fabric_name &&
+		    fcf->fc_map == new.fc_map &&
+		    ether_addr_equal(fcf->fcf_mac, new.fcf_mac)) {
+			found = 1;
+			break;
+		}
+	}
+	if (!found) {
+		if (fip->fcf_count >= FCOE_CTLR_FCF_LIMIT)
+			goto out;
+
+		fcf = kmalloc_obj(*fcf, GFP_ATOMIC);
+		if (!fcf)
+			goto out;
+
+		memcpy(fcf, &new, sizeof(new));
+		fcf->fip = fip;
+		rc = fcoe_sysfs_fcf_add(fcf);
+		if (rc) {
+			printk(KERN_ERR "Failed to allocate sysfs instance "
+			       "for FCF, fab %16.16llx mac %pM\n",
+			       new.fabric_name, new.fcf_mac);
+			kfree(fcf);
+			goto out;
+		}
+	} else {
+		/*
+		 * Update the FCF's keep-alive descriptor flags.
+		 * Other flag changes from new advertisements are
+		 * ignored after a solicited advertisement is
+		 * received and the FCF is selectable (usable).
+		 */
+		fcf->fd_flags = new.fd_flags;
+		if (!fcoe_ctlr_fcf_usable(fcf))
+			fcf->flags = new.flags;
+
+		if (fcf == fip->sel_fcf && !fcf->fd_flags) {
+			fip->ctlr_ka_time -= fcf->fka_period;
+			fip->ctlr_ka_time += new.fka_period;
+			if (time_before(fip->ctlr_ka_time, fip->timer.expires))
+				mod_timer(&fip->timer, fip->ctlr_ka_time);
+		}
+		fcf->fka_period = new.fka_period;
+		memcpy(fcf->fcf_mac, new.fcf_mac, ETH_ALEN);
+	}
+
+	mtu_valid = fcoe_ctlr_mtu_valid(fcf);
+	fcf->time = jiffies;
+	if (!found)
+		LIBFCOE_FIP_DBG(fip, "New FCF fab %16.16llx mac %pM\n",
+				fcf->fabric_name, fcf->fcf_mac);
+
+	/*
+	 * If this advertisement is not solicited and our max receive size
+	 * hasn't been verified, send a solicited advertisement.
+	 */
+	if (!mtu_valid)
+		fcoe_ctlr_solicit(fip, fcf);
+
+	/*
+	 * If its been a while since we did a solicit, and this is
+	 * the first advertisement we've received, do a multicast
+	 * solicitation to gather as many advertisements as we can
+	 * before selection occurs.
+	 */
+	if (first && time_after(jiffies, fip->sol_time + sol_tov))
+		fcoe_ctlr_solicit(fip, NULL);
+
+	/*
+	 * Put this FCF at the head of the list for priority among equals.
+	 * This helps in the case of an NPV switch which insists we use
+	 * the FCF that answers multicast solicitations, not the others that
+	 * are sending periodic multicast advertisements.
+	 */
+	if (mtu_valid)
+		list_move(&fcf->list, &fip->fcfs);
+
+	/*
+	 * If this is the first validated FCF, note the time and
+	 * set a timer to trigger selection.
+	 */
+	if (mtu_valid && !fip->sel_fcf && !fip->sel_time &&
+	    fcoe_ctlr_fcf_usable(fcf)) {
+		fip->sel_time = jiffies +
+			msecs_to_jiffies(FCOE_CTLR_START_DELAY);
+		if (!timer_pending(&fip->timer) ||
+		    time_before(fip->sel_time, fip->timer.expires))
+			mod_timer(&fip->timer, fip->sel_time);
+	}
+
+out:
+	mutex_unlock(&fip->ctlr_mutex);
+}
+
+/**
+ * fcoe_ctlr_recv_els() - Handle an incoming FIP encapsulated ELS frame
+ * @fip: The FCoE controller which received the packet
+ * @skb: The received FIP packet
+ */
+static void fcoe_ctlr_recv_els(struct fcoe_ctlr *fip, struct sk_buff *skb)
+{
+	struct fc_lport *lport = fip->lp;
+	struct fip_header *fiph;
+	struct fc_frame *fp = (struct fc_frame *)skb;
+	struct fc_frame_header *fh = NULL;
+	struct fip_desc *desc;
+	struct fip_encaps *els;
+	struct fcoe_fcf *sel;
+	enum fip_desc_type els_dtype = 0;
+	u8 els_op;
+	u8 sub;
+	u8 granted_mac[ETH_ALEN] = { 0 };
+	size_t els_len = 0;
+	size_t rlen;
+	size_t dlen;
+	u32 desc_mask = 0;
+	u32 desc_cnt = 0;
+
+	fiph = (struct fip_header *)skb->data;
+	sub = fiph->fip_subcode;
+	if (sub != FIP_SC_REQ && sub != FIP_SC_REP)
+		goto drop;
+
+	rlen = ntohs(fiph->fip_dl_len) * 4;
+	if (rlen + sizeof(*fiph) > skb->len)
+		goto drop;
+
+	desc = (struct fip_desc *)(fiph + 1);
+	while (rlen > 0) {
+		desc_cnt++;
+		dlen = desc->fip_dlen * FIP_BPW;
+		if (dlen < sizeof(*desc) || dlen > rlen)
+			goto drop;
+		/* Drop ELS if there are duplicate critical descriptors */
+		if (desc->fip_dtype < 32) {
+			if ((desc->fip_dtype != FIP_DT_MAC) &&
+			    (desc_mask & 1U << desc->fip_dtype)) {
+				LIBFCOE_FIP_DBG(fip, "Duplicate Critical "
+						"Descriptors in FIP ELS\n");
+				goto drop;
+			}
+			desc_mask |= (1 << desc->fip_dtype);
+		}
+		switch (desc->fip_dtype) {
+		case FIP_DT_MAC:
+			sel = fip->sel_fcf;
+			if (desc_cnt == 1) {
+				LIBFCOE_FIP_DBG(fip, "FIP descriptors "
+						"received out of order\n");
+				goto drop;
+			}
+			/*
+			 * Some switch implementations send two MAC descriptors,
+			 * with first MAC(granted_mac) being the FPMA, and the
+			 * second one(fcoe_mac) is used as destination address
+			 * for sending/receiving FCoE packets. FIP traffic is
+			 * sent using fip_mac. For regular switches, both
+			 * fip_mac and fcoe_mac would be the same.
+			 */
+			if (desc_cnt == 2)
+				memcpy(granted_mac,
+				       ((struct fip_mac_desc *)desc)->fd_mac,
+				       ETH_ALEN);
+
+			if (dlen != sizeof(struct fip_mac_desc))
+				goto len_err;
+
+			if ((desc_cnt == 3) && (sel))
+				memcpy(sel->fcoe_mac,
+				       ((struct fip_mac_desc *)desc)->fd_mac,
+				       ETH_ALEN);
+			break;
+		case FIP_DT_FLOGI:
+		case FIP_DT_FDISC:
+		case FIP_DT_LOGO:
+		case FIP_DT_ELP:
+			if (desc_cnt != 1) {
+				LIBFCOE_FIP_DBG(fip, "FIP descriptors "
+						"received out of order\n");
+				goto drop;
+			}
+			if (fh)
+				goto drop;
+			if (dlen < sizeof(*els) + sizeof(*fh) + 1)
+				goto len_err;
+			els_len = dlen - sizeof(*els);
+			els = (struct fip_encaps *)desc;
+			fh = (struct fc_frame_header *)(els + 1);
+			els_dtype = desc->fip_dtype;
+			break;
+		default:
+			LIBFCOE_FIP_DBG(fip, "unexpected descriptor type %x "
+					"in FIP adv\n", desc->fip_dtype);
+			/* standard says ignore unknown descriptors >= 128 */
+			if (desc->fip_dtype < FIP_DT_NON_CRITICAL)
+				goto drop;
+			if (desc_cnt <= 2) {
+				LIBFCOE_FIP_DBG(fip, "FIP descriptors "
+						"received out of order\n");
+				goto drop;
+			}
+			break;
+		}
+		desc = (struct fip_desc *)((char *)desc + dlen);
+		rlen -= dlen;
+	}
+
+	if (!fh)
+		goto drop;
+	els_op = *(u8 *)(fh + 1);
+
+	if ((els_dtype == FIP_DT_FLOGI || els_dtype == FIP_DT_FDISC) &&
+	    sub == FIP_SC_REP && fip->mode != FIP_MODE_VN2VN) {
+		if (els_op == ELS_LS_ACC) {
+			if (!is_valid_ether_addr(granted_mac)) {
+				LIBFCOE_FIP_DBG(fip,
+					"Invalid MAC address %pM in FIP ELS\n",
+					granted_mac);
+				goto drop;
+			}
+			memcpy(fr_cb(fp)->granted_mac, granted_mac, ETH_ALEN);
+
+			if (fip->flogi_oxid == ntohs(fh->fh_ox_id)) {
+				fip->flogi_oxid = FC_XID_UNKNOWN;
+				if (els_dtype == FIP_DT_FLOGI)
+					fcoe_ctlr_announce(fip);
+			}
+		} else if (els_dtype == FIP_DT_FLOGI &&
+			   !fcoe_ctlr_flogi_retry(fip))
+			goto drop;	/* retrying FLOGI so drop reject */
+	}
+
+	if ((desc_cnt == 0) || ((els_op != ELS_LS_RJT) &&
+	    (!(1U << FIP_DT_MAC & desc_mask)))) {
+		LIBFCOE_FIP_DBG(fip, "Missing critical descriptors "
+				"in FIP ELS\n");
+		goto drop;
+	}
+
+	/*
+	 * Convert skb into an fc_frame containing only the ELS.
+	 */
+	skb_pull(skb, (u8 *)fh - skb->data);
+	skb_trim(skb, els_len);
+	fp = (struct fc_frame *)skb;
+	fc_frame_init(fp);
+	fr_sof(fp) = FC_SOF_I3;
+	fr_eof(fp) = FC_EOF_T;
+	fr_dev(fp) = lport;
+	fr_encaps(fp) = els_dtype;
+
+	this_cpu_inc(lport->stats->RxFrames);
+	this_cpu_add(lport->stats->RxWords, skb->len / FIP_BPW);
+
+	fc_exch_recv(lport, fp);
+	return;
+
+len_err:
+	LIBFCOE_FIP_DBG(fip, "FIP length error in descriptor type %x len %zu\n",
+			desc->fip_dtype, dlen);
+drop:
+	kfree_skb(skb);
+}
+
+/**
+ * fcoe_ctlr_recv_clr_vlink() - Handle an incoming link reset frame
+ * @fip: The FCoE controller that received the frame
+ * @skb: The received FIP packet
+ *
+ * There may be multiple VN_Port descriptors.
+ * The overall length has already been checked.
+ */
+static void fcoe_ctlr_recv_clr_vlink(struct fcoe_ctlr *fip,
+				     struct sk_buff *skb)
+{
+	struct fip_desc *desc;
+	struct fip_mac_desc *mp;
+	struct fip_wwn_desc *wp;
+	struct fip_vn_desc *vp;
+	size_t rlen;
+	size_t dlen;
+	struct fcoe_fcf *fcf = fip->sel_fcf;
+	struct fc_lport *lport = fip->lp;
+	struct fc_lport *vn_port = NULL;
+	u32 desc_mask;
+	int num_vlink_desc;
+	int reset_phys_port = 0;
+	struct fip_vn_desc **vlink_desc_arr = NULL;
+	struct fip_header *fh = (struct fip_header *)skb->data;
+	struct ethhdr *eh = eth_hdr(skb);
+
+	LIBFCOE_FIP_DBG(fip, "Clear Virtual Link received\n");
+
+	if (!fcf) {
+		/*
+		 * We are yet to select best FCF, but we got CVL in the
+		 * meantime. reset the ctlr and let it rediscover the FCF
+		 */
+		LIBFCOE_FIP_DBG(fip, "Resetting fcoe_ctlr as FCF has not been "
+		    "selected yet\n");
+		mutex_lock(&fip->ctlr_mutex);
+		fcoe_ctlr_reset(fip);
+		mutex_unlock(&fip->ctlr_mutex);
+		return;
+	}
+
+	/*
+	 * If we've selected an FCF check that the CVL is from there to avoid
+	 * processing CVLs from an unexpected source.  If it is from an
+	 * unexpected source drop it on the floor.
+	 */
+	if (!ether_addr_equal(eh->h_source, fcf->fcf_mac)) {
+		LIBFCOE_FIP_DBG(fip, "Dropping CVL due to source address "
+		    "mismatch with FCF src=%pM\n", eh->h_source);
+		return;
+	}
+
+	/*
+	 * If we haven't logged into the fabric but receive a CVL we should
+	 * reset everything and go back to solicitation.
+	 */
+	if (!lport->port_id) {
+		LIBFCOE_FIP_DBG(fip, "lport not logged in, resoliciting\n");
+		mutex_lock(&fip->ctlr_mutex);
+		fcoe_ctlr_reset(fip);
+		mutex_unlock(&fip->ctlr_mutex);
+		fc_lport_reset(fip->lp);
+		fcoe_ctlr_solicit(fip, NULL);
+		return;
+	}
+
+	/*
+	 * mask of required descriptors.  Validating each one clears its bit.
+	 */
+	desc_mask = BIT(FIP_DT_MAC) | BIT(FIP_DT_NAME);
+
+	rlen = ntohs(fh->fip_dl_len) * FIP_BPW;
+	desc = (struct fip_desc *)(fh + 1);
+
+	/*
+	 * Actually need to subtract 'sizeof(*mp) - sizeof(*wp)' from 'rlen'
+	 * before determining max Vx_Port descriptor but a buggy FCF could have
+	 * omitted either or both MAC Address and Name Identifier descriptors
+	 */
+	num_vlink_desc = rlen / sizeof(*vp);
+	if (num_vlink_desc)
+		vlink_desc_arr = kmalloc_objs(vp, num_vlink_desc, GFP_ATOMIC);
+	if (!vlink_desc_arr)
+		return;
+	num_vlink_desc = 0;
+
+	while (rlen >= sizeof(*desc)) {
+		dlen = desc->fip_dlen * FIP_BPW;
+		if (dlen < sizeof(*desc) || dlen > rlen)
+			goto err;
+		/* Drop CVL if there are duplicate critical descriptors */
+		if ((desc->fip_dtype < 32) &&
+		    (desc->fip_dtype != FIP_DT_VN_ID) &&
+		    !(desc_mask & 1U << desc->fip_dtype)) {
+			LIBFCOE_FIP_DBG(fip, "Duplicate Critical "
+					"Descriptors in FIP CVL\n");
+			goto err;
+		}
+		switch (desc->fip_dtype) {
+		case FIP_DT_MAC:
+			mp = (struct fip_mac_desc *)desc;
+			if (dlen < sizeof(*mp))
+				goto err;
+			if (!ether_addr_equal(mp->fd_mac, fcf->fcf_mac))
+				goto err;
+			desc_mask &= ~BIT(FIP_DT_MAC);
+			break;
+		case FIP_DT_NAME:
+			wp = (struct fip_wwn_desc *)desc;
+			if (dlen < sizeof(*wp))
+				goto err;
+			if (get_unaligned_be64(&wp->fd_wwn) != fcf->switch_name)
+				goto err;
+			desc_mask &= ~BIT(FIP_DT_NAME);
+			break;
+		case FIP_DT_VN_ID:
+			vp = (struct fip_vn_desc *)desc;
+			if (dlen < sizeof(*vp))
+				goto err;
+			vlink_desc_arr[num_vlink_desc++] = vp;
+			vn_port = fc_vport_id_lookup(lport,
+						      ntoh24(vp->fd_fc_id));
+			if (vn_port && (vn_port == lport)) {
+				mutex_lock(&fip->ctlr_mutex);
+				this_cpu_inc(lport->stats->VLinkFailureCount);
+				fcoe_ctlr_reset(fip);
+				mutex_unlock(&fip->ctlr_mutex);
+			}
+			break;
+		default:
+			/* standard says ignore unknown descriptors >= 128 */
+			if (desc->fip_dtype < FIP_DT_NON_CRITICAL)
+				goto err;
+			break;
+		}
+		desc = (struct fip_desc *)((char *)desc + dlen);
+		rlen -= dlen;
+	}
+
+	/*
+	 * reset only if all required descriptors were present and valid.
+	 */
+	if (desc_mask)
+		LIBFCOE_FIP_DBG(fip, "missing descriptors mask %x\n",
+				desc_mask);
+	else if (!num_vlink_desc) {
+		LIBFCOE_FIP_DBG(fip, "CVL: no Vx_Port descriptor found\n");
+		/*
+		 * No Vx_Port description. Clear all NPIV ports,
+		 * followed by physical port
+		 */
+		mutex_lock(&fip->ctlr_mutex);
+		this_cpu_inc(lport->stats->VLinkFailureCount);
+		fcoe_ctlr_reset(fip);
+		mutex_unlock(&fip->ctlr_mutex);
+
+		mutex_lock(&lport->lp_mutex);
+		list_for_each_entry(vn_port, &lport->vports, list)
+			fc_lport_reset(vn_port);
+		mutex_unlock(&lport->lp_mutex);
+
+		fc_lport_reset(fip->lp);
+		fcoe_ctlr_solicit(fip, NULL);
+	} else {
+		int i;
+
+		LIBFCOE_FIP_DBG(fip, "performing Clear Virtual Link\n");
+		for (i = 0; i < num_vlink_desc; i++) {
+			vp = vlink_desc_arr[i];
+			vn_port = fc_vport_id_lookup(lport,
+						     ntoh24(vp->fd_fc_id));
+			if (!vn_port)
+				continue;
+
+			/*
+			 * 'port_id' is already validated, check MAC address and
+			 * wwpn
+			 */
+			if (!ether_addr_equal(fip->get_src_addr(vn_port),
+					      vp->fd_mac) ||
+				get_unaligned_be64(&vp->fd_wwpn) !=
+							vn_port->wwpn)
+				continue;
+
+			if (vn_port == lport)
+				/*
+				 * Physical port, defer processing till all
+				 * listed NPIV ports are cleared
+				 */
+				reset_phys_port = 1;
+			else    /* NPIV port */
+				fc_lport_reset(vn_port);
+		}
+
+		if (reset_phys_port) {
+			fc_lport_reset(fip->lp);
+			fcoe_ctlr_solicit(fip, NULL);
+		}
+	}
+
+err:
+	kfree(vlink_desc_arr);
+}
+
+/**
+ * fcoe_ctlr_recv() - Receive a FIP packet
+ * @fip: The FCoE controller that received the packet
+ * @skb: The received FIP packet
+ *
+ * This may be called from either NET_RX_SOFTIRQ or IRQ.
+ */
+void fcoe_ctlr_recv(struct fcoe_ctlr *fip, struct sk_buff *skb)
+{
+	skb = skb_share_check(skb, GFP_ATOMIC);
+	if (!skb)
+		return;
+	skb_queue_tail(&fip->fip_recv_list, skb);
+	schedule_work(&fip->recv_work);
+}
+EXPORT_SYMBOL(fcoe_ctlr_recv);
+
+/**
+ * fcoe_ctlr_recv_handler() - Receive a FIP frame
+ * @fip: The FCoE controller that received the frame
+ * @skb: The received FIP frame
+ *
+ * Returns non-zero if the frame is dropped.
+ */
+static int fcoe_ctlr_recv_handler(struct fcoe_ctlr *fip, struct sk_buff *skb)
+{
+	struct fip_header *fiph;
+	struct ethhdr *eh;
+	enum fip_state state;
+	bool fip_vlan_resp = false;
+	u16 op;
+	u8 sub;
+
+	if (skb_linearize(skb))
+		goto drop;
+	if (skb->len < sizeof(*fiph))
+		goto drop;
+	eh = eth_hdr(skb);
+	if (fip->mode == FIP_MODE_VN2VN) {
+		if (!ether_addr_equal(eh->h_dest, fip->ctl_src_addr) &&
+		    !ether_addr_equal(eh->h_dest, fcoe_all_vn2vn) &&
+		    !ether_addr_equal(eh->h_dest, fcoe_all_p2p))
+			goto drop;
+	} else if (!ether_addr_equal(eh->h_dest, fip->ctl_src_addr) &&
+		   !ether_addr_equal(eh->h_dest, fcoe_all_enode))
+		goto drop;
+	fiph = (struct fip_header *)skb->data;
+	op = ntohs(fiph->fip_op);
+	sub = fiph->fip_subcode;
+
+	if (FIP_VER_DECAPS(fiph->fip_ver) != FIP_VER)
+		goto drop;
+	if (ntohs(fiph->fip_dl_len) * FIP_BPW + sizeof(*fiph) > skb->len)
+		goto drop;
+
+	mutex_lock(&fip->ctlr_mutex);
+	state = fip->state;
+	if (state == FIP_ST_AUTO) {
+		fip->map_dest = 0;
+		fcoe_ctlr_set_state(fip, FIP_ST_ENABLED);
+		state = FIP_ST_ENABLED;
+		LIBFCOE_FIP_DBG(fip, "Using FIP mode\n");
+	}
+	fip_vlan_resp = fip->fip_resp;
+	mutex_unlock(&fip->ctlr_mutex);
+
+	if (fip->mode == FIP_MODE_VN2VN && op == FIP_OP_VN2VN)
+		return fcoe_ctlr_vn_recv(fip, skb);
+
+	if (fip_vlan_resp && op == FIP_OP_VLAN) {
+		LIBFCOE_FIP_DBG(fip, "fip vlan discovery\n");
+		return fcoe_ctlr_vlan_recv(fip, skb);
+	}
+
+	if (state != FIP_ST_ENABLED && state != FIP_ST_VNMP_UP &&
+	    state != FIP_ST_VNMP_CLAIM)
+		goto drop;
+
+	if (op == FIP_OP_LS) {
+		fcoe_ctlr_recv_els(fip, skb);	/* consumes skb */
+		return 0;
+	}
+
+	if (state != FIP_ST_ENABLED)
+		goto drop;
+
+	if (op == FIP_OP_DISC && sub == FIP_SC_ADV)
+		fcoe_ctlr_recv_adv(fip, skb);
+	else if (op == FIP_OP_CTRL && sub == FIP_SC_CLR_VLINK)
+		fcoe_ctlr_recv_clr_vlink(fip, skb);
+	kfree_skb(skb);
+	return 0;
+drop:
+	kfree_skb(skb);
+	return -1;
+}
+
+/**
+ * fcoe_ctlr_select() - Select the best FCF (if possible)
+ * @fip: The FCoE controller
+ *
+ * Returns the selected FCF, or NULL if none are usable.
+ *
+ * If there are conflicting advertisements, no FCF can be chosen.
+ *
+ * If there is already a selected FCF, this will choose a better one or
+ * an equivalent one that hasn't already been sent a FLOGI.
+ *
+ * Called with lock held.
+ */
+static struct fcoe_fcf *fcoe_ctlr_select(struct fcoe_ctlr *fip)
+{
+	struct fcoe_fcf *fcf;
+	struct fcoe_fcf *best = fip->sel_fcf;
+
+	list_for_each_entry(fcf, &fip->fcfs, list) {
+		LIBFCOE_FIP_DBG(fip, "consider FCF fab %16.16llx "
+				"VFID %d mac %pM map %x val %d "
+				"sent %u pri %u\n",
+				fcf->fabric_name, fcf->vfid, fcf->fcf_mac,
+				fcf->fc_map, fcoe_ctlr_mtu_valid(fcf),
+				fcf->flogi_sent, fcf->pri);
+		if (!fcoe_ctlr_fcf_usable(fcf)) {
+			LIBFCOE_FIP_DBG(fip, "FCF for fab %16.16llx "
+					"map %x %svalid %savailable\n",
+					fcf->fabric_name, fcf->fc_map,
+					(fcf->flags & FIP_FL_SOL) ? "" : "in",
+					(fcf->flags & FIP_FL_AVAIL) ?
+					"" : "un");
+			continue;
+		}
+		if (!best || fcf->pri < best->pri || best->flogi_sent)
+			best = fcf;
+		if (fcf->fabric_name != best->fabric_name ||
+		    fcf->vfid != best->vfid ||
+		    fcf->fc_map != best->fc_map) {
+			LIBFCOE_FIP_DBG(fip, "Conflicting fabric, VFID, "
+					"or FC-MAP\n");
+			return NULL;
+		}
+	}
+	fip->sel_fcf = best;
+	if (best) {
+		LIBFCOE_FIP_DBG(fip, "using FCF mac %pM\n", best->fcf_mac);
+		fip->port_ka_time = jiffies +
+			msecs_to_jiffies(FIP_VN_KA_PERIOD);
+		fip->ctlr_ka_time = jiffies + best->fka_period;
+		if (time_before(fip->ctlr_ka_time, fip->timer.expires))
+			mod_timer(&fip->timer, fip->ctlr_ka_time);
+	}
+	return best;
+}
+
+/**
+ * fcoe_ctlr_flogi_send_locked() - send FIP-encapsulated FLOGI to current FCF
+ * @fip: The FCoE controller
+ *
+ * Returns non-zero error if it could not be sent.
+ *
+ * Called with ctlr_mutex and ctlr_lock held.
+ * Caller must verify that fip->sel_fcf is not NULL.
+ */
+static int fcoe_ctlr_flogi_send_locked(struct fcoe_ctlr *fip)
+{
+	struct sk_buff *skb;
+	struct sk_buff *skb_orig;
+	struct fc_frame_header *fh;
+	int error;
+
+	skb_orig = fip->flogi_req;
+	if (!skb_orig)
+		return -EINVAL;
+
+	/*
+	 * Clone and send the FLOGI request.  If clone fails, use original.
+	 */
+	skb = skb_clone(skb_orig, GFP_ATOMIC);
+	if (!skb) {
+		skb = skb_orig;
+		fip->flogi_req = NULL;
+	}
+	fh = (struct fc_frame_header *)skb->data;
+	error = fcoe_ctlr_encaps(fip, fip->lp, FIP_DT_FLOGI, skb,
+				 ntoh24(fh->fh_d_id));
+	if (error) {
+		kfree_skb(skb);
+		return error;
+	}
+	fip->send(fip, skb);
+	fip->sel_fcf->flogi_sent = 1;
+	return 0;
+}
+
+/**
+ * fcoe_ctlr_flogi_retry() - resend FLOGI request to a new FCF if possible
+ * @fip: The FCoE controller
+ *
+ * Returns non-zero error code if there's no FLOGI request to retry or
+ * no alternate FCF available.
+ */
+static int fcoe_ctlr_flogi_retry(struct fcoe_ctlr *fip)
+{
+	struct fcoe_fcf *fcf;
+	int error;
+
+	mutex_lock(&fip->ctlr_mutex);
+	spin_lock_bh(&fip->ctlr_lock);
+	LIBFCOE_FIP_DBG(fip, "re-sending FLOGI - reselect\n");
+	fcf = fcoe_ctlr_select(fip);
+	if (!fcf || fcf->flogi_sent) {
+		kfree_skb(fip->flogi_req);
+		fip->flogi_req = NULL;
+		error = -ENOENT;
+	} else {
+		fcoe_ctlr_solicit(fip, NULL);
+		error = fcoe_ctlr_flogi_send_locked(fip);
+	}
+	spin_unlock_bh(&fip->ctlr_lock);
+	mutex_unlock(&fip->ctlr_mutex);
+	return error;
+}
+
+
+/**
+ * fcoe_ctlr_flogi_send() - Handle sending of FIP FLOGI.
+ * @fip: The FCoE controller that timed out
+ *
+ * Done here because fcoe_ctlr_els_send() can't get mutex.
+ *
+ * Called with ctlr_mutex held.  The caller must not hold ctlr_lock.
+ */
+static void fcoe_ctlr_flogi_send(struct fcoe_ctlr *fip)
+{
+	struct fcoe_fcf *fcf;
+
+	spin_lock_bh(&fip->ctlr_lock);
+	fcf = fip->sel_fcf;
+	if (!fcf || !fip->flogi_req_send)
+		goto unlock;
+
+	LIBFCOE_FIP_DBG(fip, "sending FLOGI\n");
+
+	/*
+	 * If this FLOGI is being sent due to a timeout retry
+	 * to the same FCF as before, select a different FCF if possible.
+	 */
+	if (fcf->flogi_sent) {
+		LIBFCOE_FIP_DBG(fip, "sending FLOGI - reselect\n");
+		fcf = fcoe_ctlr_select(fip);
+		if (!fcf || fcf->flogi_sent) {
+			LIBFCOE_FIP_DBG(fip, "sending FLOGI - clearing\n");
+			list_for_each_entry(fcf, &fip->fcfs, list)
+				fcf->flogi_sent = 0;
+			fcf = fcoe_ctlr_select(fip);
+		}
+	}
+	if (fcf) {
+		fcoe_ctlr_flogi_send_locked(fip);
+		fip->flogi_req_send = 0;
+	} else /* XXX */
+		LIBFCOE_FIP_DBG(fip, "No FCF selected - defer send\n");
+unlock:
+	spin_unlock_bh(&fip->ctlr_lock);
+}
+
+/**
+ * fcoe_ctlr_timeout() - FIP timeout handler
+ * @t: Timer context use to obtain the controller reference
+ */
+static void fcoe_ctlr_timeout(struct timer_list *t)
+{
+	struct fcoe_ctlr *fip = timer_container_of(fip, t, timer);
+
+	schedule_work(&fip->timer_work);
+}
+
+/**
+ * fcoe_ctlr_timer_work() - Worker thread function for timer work
+ * @work: Handle to a FCoE controller
+ *
+ * Ages FCFs.  Triggers FCF selection if possible.
+ * Sends keep-alives and resets.
+ */
+static void fcoe_ctlr_timer_work(struct work_struct *work)
+{
+	struct fcoe_ctlr *fip;
+	struct fc_lport *vport;
+	u8 *mac;
+	u8 reset = 0;
+	u8 send_ctlr_ka = 0;
+	u8 send_port_ka = 0;
+	struct fcoe_fcf *sel;
+	struct fcoe_fcf *fcf;
+	unsigned long next_timer;
+
+	fip = container_of(work, struct fcoe_ctlr, timer_work);
+	if (fip->mode == FIP_MODE_VN2VN)
+		return fcoe_ctlr_vn_timeout(fip);
+	mutex_lock(&fip->ctlr_mutex);
+	if (fip->state == FIP_ST_DISABLED) {
+		mutex_unlock(&fip->ctlr_mutex);
+		return;
+	}
+
+	fcf = fip->sel_fcf;
+	next_timer = fcoe_ctlr_age_fcfs(fip);
+
+	sel = fip->sel_fcf;
+	if (!sel && fip->sel_time) {
+		if (time_after_eq(jiffies, fip->sel_time)) {
+			sel = fcoe_ctlr_select(fip);
+			fip->sel_time = 0;
+		} else if (time_after(next_timer, fip->sel_time))
+			next_timer = fip->sel_time;
+	}
+
+	if (sel && fip->flogi_req_send)
+		fcoe_ctlr_flogi_send(fip);
+	else if (!sel && fcf)
+		reset = 1;
+
+	if (sel && !sel->fd_flags) {
+		if (time_after_eq(jiffies, fip->ctlr_ka_time)) {
+			fip->ctlr_ka_time = jiffies + sel->fka_period;
+			send_ctlr_ka = 1;
+		}
+		if (time_after(next_timer, fip->ctlr_ka_time))
+			next_timer = fip->ctlr_ka_time;
+
+		if (time_after_eq(jiffies, fip->port_ka_time)) {
+			fip->port_ka_time = jiffies +
+				msecs_to_jiffies(FIP_VN_KA_PERIOD);
+			send_port_ka = 1;
+		}
+		if (time_after(next_timer, fip->port_ka_time))
+			next_timer = fip->port_ka_time;
+	}
+	if (!list_empty(&fip->fcfs))
+		mod_timer(&fip->timer, next_timer);
+	mutex_unlock(&fip->ctlr_mutex);
+
+	if (reset) {
+		fc_lport_reset(fip->lp);
+		/* restart things with a solicitation */
+		fcoe_ctlr_solicit(fip, NULL);
+	}
+
+	if (send_ctlr_ka)
+		fcoe_ctlr_send_keep_alive(fip, NULL, 0, fip->ctl_src_addr);
+
+	if (send_port_ka) {
+		mutex_lock(&fip->lp->lp_mutex);
+		mac = fip->get_src_addr(fip->lp);
+		fcoe_ctlr_send_keep_alive(fip, fip->lp, 1, mac);
+		list_for_each_entry(vport, &fip->lp->vports, list) {
+			mac = fip->get_src_addr(vport);
+			fcoe_ctlr_send_keep_alive(fip, vport, 1, mac);
+		}
+		mutex_unlock(&fip->lp->lp_mutex);
+	}
+}
+
+/**
+ * fcoe_ctlr_recv_work() - Worker thread function for receiving FIP frames
+ * @recv_work: Handle to a FCoE controller
+ */
+static void fcoe_ctlr_recv_work(struct work_struct *recv_work)
+{
+	struct fcoe_ctlr *fip;
+	struct sk_buff *skb;
+
+	fip = container_of(recv_work, struct fcoe_ctlr, recv_work);
+	while ((skb = skb_dequeue(&fip->fip_recv_list)))
+		fcoe_ctlr_recv_handler(fip, skb);
+}
+
+/**
+ * fcoe_ctlr_recv_flogi() - Snoop pre-FIP receipt of FLOGI response
+ * @fip: The FCoE controller
+ * @lport: The local port
+ * @fp:	 The FC frame to snoop
+ *
+ * Snoop potential response to FLOGI or even incoming FLOGI.
+ *
+ * The caller has checked that we are waiting for login as indicated
+ * by fip->flogi_oxid != FC_XID_UNKNOWN.
+ *
+ * The caller is responsible for freeing the frame.
+ * Fill in the granted_mac address.
+ *
+ * Return non-zero if the frame should not be delivered to libfc.
+ */
+int fcoe_ctlr_recv_flogi(struct fcoe_ctlr *fip, struct fc_lport *lport,
+			 struct fc_frame *fp)
+{
+	struct fc_frame_header *fh;
+	u8 op;
+	u8 *sa;
+
+	sa = eth_hdr(&fp->skb)->h_source;
+	fh = fc_frame_header_get(fp);
+	if (fh->fh_type != FC_TYPE_ELS)
+		return 0;
+
+	op = fc_frame_payload_op(fp);
+	if (op == ELS_LS_ACC && fh->fh_r_ctl == FC_RCTL_ELS_REP &&
+	    fip->flogi_oxid == ntohs(fh->fh_ox_id)) {
+
+		mutex_lock(&fip->ctlr_mutex);
+		if (fip->state != FIP_ST_AUTO && fip->state != FIP_ST_NON_FIP) {
+			mutex_unlock(&fip->ctlr_mutex);
+			return -EINVAL;
+		}
+		fcoe_ctlr_set_state(fip, FIP_ST_NON_FIP);
+		LIBFCOE_FIP_DBG(fip,
+				"received FLOGI LS_ACC using non-FIP mode\n");
+
+		/*
+		 * FLOGI accepted.
+		 * If the src mac addr is FC_OUI-based, then we mark the
+		 * address_mode flag to use FC_OUI-based Ethernet DA.
+		 * Otherwise we use the FCoE gateway addr
+		 */
+		if (ether_addr_equal(sa, (u8[6])FC_FCOE_FLOGI_MAC)) {
+			fcoe_ctlr_map_dest(fip);
+		} else {
+			memcpy(fip->dest_addr, sa, ETH_ALEN);
+			fip->map_dest = 0;
+		}
+		fip->flogi_oxid = FC_XID_UNKNOWN;
+		mutex_unlock(&fip->ctlr_mutex);
+		fc_fcoe_set_mac(fr_cb(fp)->granted_mac, fh->fh_d_id);
+	} else if (op == ELS_FLOGI && fh->fh_r_ctl == FC_RCTL_ELS_REQ && sa) {
+		/*
+		 * Save source MAC for point-to-point responses.
+		 */
+		mutex_lock(&fip->ctlr_mutex);
+		if (fip->state == FIP_ST_AUTO || fip->state == FIP_ST_NON_FIP) {
+			memcpy(fip->dest_addr, sa, ETH_ALEN);
+			fip->map_dest = 0;
+			if (fip->state == FIP_ST_AUTO)
+				LIBFCOE_FIP_DBG(fip, "received non-FIP FLOGI. "
+						"Setting non-FIP mode\n");
+			fcoe_ctlr_set_state(fip, FIP_ST_NON_FIP);
+		}
+		mutex_unlock(&fip->ctlr_mutex);
+	}
+	return 0;
+}
+EXPORT_SYMBOL(fcoe_ctlr_recv_flogi);
+
+/**
+ * fcoe_wwn_from_mac() - Converts a 48-bit IEEE MAC address to a 64-bit FC WWN
+ * @mac:    The MAC address to convert
+ * @scheme: The scheme to use when converting
+ * @port:   The port indicator for converting
+ *
+ * Returns: u64 fc world wide name
+ */
+u64 fcoe_wwn_from_mac(unsigned char mac[ETH_ALEN],
+		      unsigned int scheme, unsigned int port)
+{
+	u64 wwn;
+	u64 host_mac;
+
+	/* The MAC is in NO, so flip only the low 48 bits */
+	host_mac = ((u64) mac[0] << 40) |
+		((u64) mac[1] << 32) |
+		((u64) mac[2] << 24) |
+		((u64) mac[3] << 16) |
+		((u64) mac[4] << 8) |
+		(u64) mac[5];
+
+	WARN_ON(host_mac >= (1ULL << 48));
+	wwn = host_mac | ((u64) scheme << 60);
+	switch (scheme) {
+	case 1:
+		WARN_ON(port != 0);
+		break;
+	case 2:
+		WARN_ON(port >= 0xfff);
+		wwn |= (u64) port << 48;
+		break;
+	default:
+		WARN_ON(1);
+		break;
+	}
+
+	return wwn;
+}
+EXPORT_SYMBOL_GPL(fcoe_wwn_from_mac);
+
+/**
+ * fcoe_ctlr_rport() - return the fcoe_rport for a given fc_rport_priv
+ * @rdata: libfc remote port
+ */
+static inline struct fcoe_rport *fcoe_ctlr_rport(struct fc_rport_priv *rdata)
+{
+	return container_of(rdata, struct fcoe_rport, rdata);
+}
+
+/**
+ * fcoe_ctlr_vn_send() - Send a FIP VN2VN Probe Request or Reply.
+ * @fip: The FCoE controller
+ * @sub: sub-opcode for probe request, reply, or advertisement.
+ * @dest: The destination Ethernet MAC address
+ * @min_len: minimum size of the Ethernet payload to be sent
+ */
+static void fcoe_ctlr_vn_send(struct fcoe_ctlr *fip,
+			      enum fip_vn2vn_subcode sub,
+			      const u8 *dest, size_t min_len)
+{
+	struct sk_buff *skb;
+	struct fip_vn2vn_probe_frame {
+		struct ethhdr eth;
+		struct fip_header fip;
+		struct fip_mac_desc mac;
+		struct fip_wwn_desc wwnn;
+		struct fip_vn_desc vn;
+	} __packed * frame;
+	struct fip_fc4_feat *ff;
+	struct fip_size_desc *size;
+	u32 fcp_feat;
+	size_t len;
+	size_t dlen;
+
+	len = sizeof(*frame);
+	dlen = 0;
+	if (sub == FIP_SC_VN_CLAIM_NOTIFY || sub == FIP_SC_VN_CLAIM_REP) {
+		dlen = sizeof(struct fip_fc4_feat) +
+		       sizeof(struct fip_size_desc);
+		len += dlen;
+	}
+	dlen += sizeof(frame->mac) + sizeof(frame->wwnn) + sizeof(frame->vn);
+	len = max(len, min_len + sizeof(struct ethhdr));
+
+	skb = dev_alloc_skb(len);
+	if (!skb)
+		return;
+
+	frame = (struct fip_vn2vn_probe_frame *)skb->data;
+	memset(frame, 0, len);
+	memcpy(frame->eth.h_dest, dest, ETH_ALEN);
+
+	if (sub == FIP_SC_VN_BEACON) {
+		hton24(frame->eth.h_source, FIP_VN_FC_MAP);
+		hton24(frame->eth.h_source + 3, fip->port_id);
+	} else {
+		memcpy(frame->eth.h_source, fip->ctl_src_addr, ETH_ALEN);
+	}
+	frame->eth.h_proto = htons(ETH_P_FIP);
+
+	frame->fip.fip_ver = FIP_VER_ENCAPS(FIP_VER);
+	frame->fip.fip_op = htons(FIP_OP_VN2VN);
+	frame->fip.fip_subcode = sub;
+	frame->fip.fip_dl_len = htons(dlen / FIP_BPW);
+
+	frame->mac.fd_desc.fip_dtype = FIP_DT_MAC;
+	frame->mac.fd_desc.fip_dlen = sizeof(frame->mac) / FIP_BPW;
+	memcpy(frame->mac.fd_mac, fip->ctl_src_addr, ETH_ALEN);
+
+	frame->wwnn.fd_desc.fip_dtype = FIP_DT_NAME;
+	frame->wwnn.fd_desc.fip_dlen = sizeof(frame->wwnn) / FIP_BPW;
+	put_unaligned_be64(fip->lp->wwnn, &frame->wwnn.fd_wwn);
+
+	frame->vn.fd_desc.fip_dtype = FIP_DT_VN_ID;
+	frame->vn.fd_desc.fip_dlen = sizeof(frame->vn) / FIP_BPW;
+	hton24(frame->vn.fd_mac, FIP_VN_FC_MAP);
+	hton24(frame->vn.fd_mac + 3, fip->port_id);
+	hton24(frame->vn.fd_fc_id, fip->port_id);
+	put_unaligned_be64(fip->lp->wwpn, &frame->vn.fd_wwpn);
+
+	/*
+	 * For claims, add FC-4 features.
+	 * TBD: Add interface to get fc-4 types and features from libfc.
+	 */
+	if (sub == FIP_SC_VN_CLAIM_NOTIFY || sub == FIP_SC_VN_CLAIM_REP) {
+		ff = (struct fip_fc4_feat *)(frame + 1);
+		ff->fd_desc.fip_dtype = FIP_DT_FC4F;
+		ff->fd_desc.fip_dlen = sizeof(*ff) / FIP_BPW;
+		ff->fd_fts = fip->lp->fcts;
+
+		fcp_feat = 0;
+		if (fip->lp->service_params & FCP_SPPF_INIT_FCN)
+			fcp_feat |= FCP_FEAT_INIT;
+		if (fip->lp->service_params & FCP_SPPF_TARG_FCN)
+			fcp_feat |= FCP_FEAT_TARG;
+		fcp_feat <<= (FC_TYPE_FCP * 4) % 32;
+		ff->fd_ff.fd_feat[FC_TYPE_FCP * 4 / 32] = htonl(fcp_feat);
+
+		size = (struct fip_size_desc *)(ff + 1);
+		size->fd_desc.fip_dtype = FIP_DT_FCOE_SIZE;
+		size->fd_desc.fip_dlen = sizeof(*size) / FIP_BPW;
+		size->fd_size = htons(fcoe_ctlr_fcoe_size(fip));
+	}
+
+	skb_put(skb, len);
+	skb->protocol = htons(ETH_P_FIP);
+	skb->priority = fip->priority;
+	skb_reset_mac_header(skb);
+	skb_reset_network_header(skb);
+
+	fip->send(fip, skb);
+}
+
+/**
+ * fcoe_ctlr_vn_rport_callback - Event handler for rport events.
+ * @lport: The lport which is receiving the event
+ * @rdata: remote port private data
+ * @event: The event that occurred
+ *
+ * Locking Note:  The rport lock must not be held when calling this function.
+ */
+static void fcoe_ctlr_vn_rport_callback(struct fc_lport *lport,
+					struct fc_rport_priv *rdata,
+					enum fc_rport_event event)
+{
+	struct fcoe_ctlr *fip = lport->disc.priv;
+	struct fcoe_rport *frport = fcoe_ctlr_rport(rdata);
+
+	LIBFCOE_FIP_DBG(fip, "vn_rport_callback %x event %d\n",
+			rdata->ids.port_id, event);
+
+	mutex_lock(&fip->ctlr_mutex);
+	switch (event) {
+	case RPORT_EV_READY:
+		frport->login_count = 0;
+		break;
+	case RPORT_EV_LOGO:
+	case RPORT_EV_FAILED:
+	case RPORT_EV_STOP:
+		frport->login_count++;
+		if (frport->login_count > FCOE_CTLR_VN2VN_LOGIN_LIMIT) {
+			LIBFCOE_FIP_DBG(fip,
+					"rport FLOGI limited port_id %6.6x\n",
+					rdata->ids.port_id);
+			fc_rport_logoff(rdata);
+		}
+		break;
+	default:
+		break;
+	}
+	mutex_unlock(&fip->ctlr_mutex);
+}
+
+static struct fc_rport_operations fcoe_ctlr_vn_rport_ops = {
+	.event_callback = fcoe_ctlr_vn_rport_callback,
+};
+
+/**
+ * fcoe_ctlr_disc_stop_locked() - stop discovery in VN2VN mode
+ * @lport: The local port
+ *
+ * Called with ctlr_mutex held.
+ */
+static void fcoe_ctlr_disc_stop_locked(struct fc_lport *lport)
+{
+	struct fc_rport_priv *rdata;
+
+	mutex_lock(&lport->disc.disc_mutex);
+	list_for_each_entry_rcu(rdata, &lport->disc.rports, peers) {
+		if (kref_get_unless_zero(&rdata->kref)) {
+			fc_rport_logoff(rdata);
+			kref_put(&rdata->kref, fc_rport_destroy);
+		}
+	}
+	lport->disc.disc_callback = NULL;
+	mutex_unlock(&lport->disc.disc_mutex);
+}
+
+/**
+ * fcoe_ctlr_disc_stop() - stop discovery in VN2VN mode
+ * @lport: The local port
+ *
+ * Called through the local port template for discovery.
+ * Called without the ctlr_mutex held.
+ */
+static void fcoe_ctlr_disc_stop(struct fc_lport *lport)
+{
+	struct fcoe_ctlr *fip = lport->disc.priv;
+
+	mutex_lock(&fip->ctlr_mutex);
+	fcoe_ctlr_disc_stop_locked(lport);
+	mutex_unlock(&fip->ctlr_mutex);
+}
+
+/**
+ * fcoe_ctlr_disc_stop_final() - stop discovery for shutdown in VN2VN mode
+ * @lport: The local port
+ *
+ * Called through the local port template for discovery.
+ * Called without the ctlr_mutex held.
+ */
+static void fcoe_ctlr_disc_stop_final(struct fc_lport *lport)
+{
+	fcoe_ctlr_disc_stop(lport);
+	fc_rport_flush_queue();
+	synchronize_rcu();
+}
+
+/**
+ * fcoe_ctlr_vn_restart() - VN2VN probe restart with new port_id
+ * @fip: The FCoE controller
+ *
+ * Called with fcoe_ctlr lock held.
+ */
+static void fcoe_ctlr_vn_restart(struct fcoe_ctlr *fip)
+{
+	unsigned long wait;
+	u32 port_id;
+
+	fcoe_ctlr_disc_stop_locked(fip->lp);
+
+	/*
+	 * Get proposed port ID.
+	 * If this is the first try after link up, use any previous port_id.
+	 * If there was none, use the low bits of the port_name.
+	 * On subsequent tries, get the next random one.
+	 * Don't use reserved IDs, use another non-zero value, just as random.
+	 */
+	port_id = fip->port_id;
+	if (fip->probe_tries)
+		port_id = prandom_u32_state(&fip->rnd_state) & 0xffff;
+	else if (!port_id)
+		port_id = fip->lp->wwpn & 0xffff;
+	if (!port_id || port_id == 0xffff)
+		port_id = 1;
+	fip->port_id = port_id;
+
+	if (fip->probe_tries < FIP_VN_RLIM_COUNT) {
+		fip->probe_tries++;
+		wait = get_random_u32_below(FIP_VN_PROBE_WAIT);
+	} else
+		wait = FIP_VN_RLIM_INT;
+	mod_timer(&fip->timer, jiffies + msecs_to_jiffies(wait));
+	fcoe_ctlr_set_state(fip, FIP_ST_VNMP_START);
+}
+
+/**
+ * fcoe_ctlr_vn_start() - Start in VN2VN mode
+ * @fip: The FCoE controller
+ *
+ * Called with fcoe_ctlr lock held.
+ */
+static void fcoe_ctlr_vn_start(struct fcoe_ctlr *fip)
+{
+	fip->probe_tries = 0;
+	prandom_seed_state(&fip->rnd_state, fip->lp->wwpn);
+	fcoe_ctlr_vn_restart(fip);
+}
+
+/**
+ * fcoe_ctlr_vn_parse - parse probe request or response
+ * @fip: The FCoE controller
+ * @skb: incoming packet
+ * @frport: parsed FCoE rport from the probe request
+ *
+ * Returns non-zero error number on error.
+ * Does not consume the packet.
+ */
+static int fcoe_ctlr_vn_parse(struct fcoe_ctlr *fip,
+			      struct sk_buff *skb,
+			      struct fcoe_rport *frport)
+{
+	struct fip_header *fiph;
+	struct fip_desc *desc = NULL;
+	struct fip_mac_desc *macd = NULL;
+	struct fip_wwn_desc *wwn = NULL;
+	struct fip_vn_desc *vn = NULL;
+	struct fip_size_desc *size = NULL;
+	size_t rlen;
+	size_t dlen;
+	u32 desc_mask = 0;
+	u32 dtype;
+	u8 sub;
+
+	fiph = (struct fip_header *)skb->data;
+	frport->flags = ntohs(fiph->fip_flags);
+
+	sub = fiph->fip_subcode;
+	switch (sub) {
+	case FIP_SC_VN_PROBE_REQ:
+	case FIP_SC_VN_PROBE_REP:
+	case FIP_SC_VN_BEACON:
+		desc_mask = BIT(FIP_DT_MAC) | BIT(FIP_DT_NAME) |
+			    BIT(FIP_DT_VN_ID);
+		break;
+	case FIP_SC_VN_CLAIM_NOTIFY:
+	case FIP_SC_VN_CLAIM_REP:
+		desc_mask = BIT(FIP_DT_MAC) | BIT(FIP_DT_NAME) |
+			    BIT(FIP_DT_VN_ID) | BIT(FIP_DT_FC4F) |
+			    BIT(FIP_DT_FCOE_SIZE);
+		break;
+	default:
+		LIBFCOE_FIP_DBG(fip, "vn_parse unknown subcode %u\n", sub);
+		return -EINVAL;
+	}
+
+	rlen = ntohs(fiph->fip_dl_len) * 4;
+	if (rlen + sizeof(*fiph) > skb->len)
+		return -EINVAL;
+
+	desc = (struct fip_desc *)(fiph + 1);
+	while (rlen > 0) {
+		dlen = desc->fip_dlen * FIP_BPW;
+		if (dlen < sizeof(*desc) || dlen > rlen)
+			return -EINVAL;
+
+		dtype = desc->fip_dtype;
+		if (dtype < 32) {
+			if (!(desc_mask & BIT(dtype))) {
+				LIBFCOE_FIP_DBG(fip,
+						"unexpected or duplicated desc "
+						"desc type %u in "
+						"FIP VN2VN subtype %u\n",
+						dtype, sub);
+				return -EINVAL;
+			}
+			desc_mask &= ~BIT(dtype);
+		}
+
+		switch (dtype) {
+		case FIP_DT_MAC:
+			if (dlen != sizeof(struct fip_mac_desc))
+				goto len_err;
+			macd = (struct fip_mac_desc *)desc;
+			if (!is_valid_ether_addr(macd->fd_mac)) {
+				LIBFCOE_FIP_DBG(fip,
+					"Invalid MAC addr %pM in FIP VN2VN\n",
+					 macd->fd_mac);
+				return -EINVAL;
+			}
+			memcpy(frport->enode_mac, macd->fd_mac, ETH_ALEN);
+			break;
+		case FIP_DT_NAME:
+			if (dlen != sizeof(struct fip_wwn_desc))
+				goto len_err;
+			wwn = (struct fip_wwn_desc *)desc;
+			frport->rdata.ids.node_name =
+				get_unaligned_be64(&wwn->fd_wwn);
+			break;
+		case FIP_DT_VN_ID:
+			if (dlen != sizeof(struct fip_vn_desc))
+				goto len_err;
+			vn = (struct fip_vn_desc *)desc;
+			memcpy(frport->vn_mac, vn->fd_mac, ETH_ALEN);
+			frport->rdata.ids.port_id = ntoh24(vn->fd_fc_id);
+			frport->rdata.ids.port_name =
+				get_unaligned_be64(&vn->fd_wwpn);
+			break;
+		case FIP_DT_FC4F:
+			if (dlen != sizeof(struct fip_fc4_feat))
+				goto len_err;
+			break;
+		case FIP_DT_FCOE_SIZE:
+			if (dlen != sizeof(struct fip_size_desc))
+				goto len_err;
+			size = (struct fip_size_desc *)desc;
+			frport->fcoe_len = ntohs(size->fd_size);
+			break;
+		default:
+			LIBFCOE_FIP_DBG(fip, "unexpected descriptor type %x "
+					"in FIP probe\n", dtype);
+			/* standard says ignore unknown descriptors >= 128 */
+			if (dtype < FIP_DT_NON_CRITICAL)
+				return -EINVAL;
+			break;
+		}
+		desc = (struct fip_desc *)((char *)desc + dlen);
+		rlen -= dlen;
+	}
+	return 0;
+
+len_err:
+	LIBFCOE_FIP_DBG(fip, "FIP length error in descriptor type %x len %zu\n",
+			dtype, dlen);
+	return -EINVAL;
+}
+
+/**
+ * fcoe_ctlr_vn_send_claim() - send multicast FIP VN2VN Claim Notification.
+ * @fip: The FCoE controller
+ *
+ * Called with ctlr_mutex held.
+ */
+static void fcoe_ctlr_vn_send_claim(struct fcoe_ctlr *fip)
+{
+	fcoe_ctlr_vn_send(fip, FIP_SC_VN_CLAIM_NOTIFY, fcoe_all_vn2vn, 0);
+	fip->sol_time = jiffies;
+}
+
+/**
+ * fcoe_ctlr_vn_probe_req() - handle incoming VN2VN probe request.
+ * @fip: The FCoE controller
+ * @frport: parsed FCoE rport from the probe request
+ *
+ * Called with ctlr_mutex held.
+ */
+static void fcoe_ctlr_vn_probe_req(struct fcoe_ctlr *fip,
+				   struct fcoe_rport *frport)
+{
+	if (frport->rdata.ids.port_id != fip->port_id)
+		return;
+
+	switch (fip->state) {
+	case FIP_ST_VNMP_CLAIM:
+	case FIP_ST_VNMP_UP:
+		LIBFCOE_FIP_DBG(fip, "vn_probe_req: send reply, state %x\n",
+				fip->state);
+		fcoe_ctlr_vn_send(fip, FIP_SC_VN_PROBE_REP,
+				  frport->enode_mac, 0);
+		break;
+	case FIP_ST_VNMP_PROBE1:
+	case FIP_ST_VNMP_PROBE2:
+		/*
+		 * Decide whether to reply to the Probe.
+		 * Our selected address is never a "recorded" one, so
+		 * only reply if our WWPN is greater and the
+		 * Probe's REC bit is not set.
+		 * If we don't reply, we will change our address.
+		 */
+		if (fip->lp->wwpn > frport->rdata.ids.port_name &&
+		    !(frport->flags & FIP_FL_REC_OR_P2P)) {
+			LIBFCOE_FIP_DBG(fip, "vn_probe_req: "
+					"port_id collision\n");
+			fcoe_ctlr_vn_send(fip, FIP_SC_VN_PROBE_REP,
+					  frport->enode_mac, 0);
+			break;
+		}
+		fallthrough;
+	case FIP_ST_VNMP_START:
+		LIBFCOE_FIP_DBG(fip, "vn_probe_req: "
+				"restart VN2VN negotiation\n");
+		fcoe_ctlr_vn_restart(fip);
+		break;
+	default:
+		LIBFCOE_FIP_DBG(fip, "vn_probe_req: ignore state %x\n",
+				fip->state);
+		break;
+	}
+}
+
+/**
+ * fcoe_ctlr_vn_probe_reply() - handle incoming VN2VN probe reply.
+ * @fip: The FCoE controller
+ * @frport: parsed FCoE rport from the probe request
+ *
+ * Called with ctlr_mutex held.
+ */
+static void fcoe_ctlr_vn_probe_reply(struct fcoe_ctlr *fip,
+				     struct fcoe_rport *frport)
+{
+	if (frport->rdata.ids.port_id != fip->port_id)
+		return;
+	switch (fip->state) {
+	case FIP_ST_VNMP_START:
+	case FIP_ST_VNMP_PROBE1:
+	case FIP_ST_VNMP_PROBE2:
+	case FIP_ST_VNMP_CLAIM:
+		LIBFCOE_FIP_DBG(fip, "vn_probe_reply: restart state %x\n",
+				fip->state);
+		fcoe_ctlr_vn_restart(fip);
+		break;
+	case FIP_ST_VNMP_UP:
+		LIBFCOE_FIP_DBG(fip, "vn_probe_reply: send claim notify\n");
+		fcoe_ctlr_vn_send_claim(fip);
+		break;
+	default:
+		break;
+	}
+}
+
+/**
+ * fcoe_ctlr_vn_add() - Add a VN2VN entry to the list, based on a claim reply.
+ * @fip: The FCoE controller
+ * @new: newly-parsed FCoE rport as a template for new rdata
+ *
+ * Called with ctlr_mutex held.
+ */
+static void fcoe_ctlr_vn_add(struct fcoe_ctlr *fip, struct fcoe_rport *new)
+{
+	struct fc_lport *lport = fip->lp;
+	struct fc_rport_priv *rdata;
+	struct fc_rport_identifiers *ids;
+	struct fcoe_rport *frport;
+	u32 port_id;
+
+	port_id = new->rdata.ids.port_id;
+	if (port_id == fip->port_id)
+		return;
+
+	mutex_lock(&lport->disc.disc_mutex);
+	rdata = fc_rport_create(lport, port_id);
+	if (!rdata) {
+		mutex_unlock(&lport->disc.disc_mutex);
+		return;
+	}
+	mutex_lock(&rdata->rp_mutex);
+	mutex_unlock(&lport->disc.disc_mutex);
+
+	rdata->ops = &fcoe_ctlr_vn_rport_ops;
+	rdata->disc_id = lport->disc.disc_id;
+
+	ids = &rdata->ids;
+	if ((ids->port_name != -1 &&
+	     ids->port_name != new->rdata.ids.port_name) ||
+	    (ids->node_name != -1 &&
+	     ids->node_name != new->rdata.ids.node_name)) {
+		mutex_unlock(&rdata->rp_mutex);
+		LIBFCOE_FIP_DBG(fip, "vn_add rport logoff %6.6x\n", port_id);
+		fc_rport_logoff(rdata);
+		mutex_lock(&rdata->rp_mutex);
+	}
+	ids->port_name = new->rdata.ids.port_name;
+	ids->node_name = new->rdata.ids.node_name;
+	mutex_unlock(&rdata->rp_mutex);
+
+	frport = fcoe_ctlr_rport(rdata);
+	LIBFCOE_FIP_DBG(fip, "vn_add rport %6.6x %s state %d\n",
+			port_id, frport->fcoe_len ? "old" : "new",
+			rdata->rp_state);
+	frport->fcoe_len = new->fcoe_len;
+	frport->flags = new->flags;
+	frport->login_count = new->login_count;
+	memcpy(frport->enode_mac, new->enode_mac, ETH_ALEN);
+	memcpy(frport->vn_mac, new->vn_mac, ETH_ALEN);
+	frport->time = 0;
+}
+
+/**
+ * fcoe_ctlr_vn_lookup() - Find VN remote port's MAC address
+ * @fip: The FCoE controller
+ * @port_id:  The port_id of the remote VN_node
+ * @mac: buffer which will hold the VN_NODE destination MAC address, if found.
+ *
+ * Returns non-zero error if no remote port found.
+ */
+static int fcoe_ctlr_vn_lookup(struct fcoe_ctlr *fip, u32 port_id, u8 *mac)
+{
+	struct fc_lport *lport = fip->lp;
+	struct fc_rport_priv *rdata;
+	struct fcoe_rport *frport;
+	int ret = -1;
+
+	rdata = fc_rport_lookup(lport, port_id);
+	if (rdata) {
+		frport = fcoe_ctlr_rport(rdata);
+		memcpy(mac, frport->enode_mac, ETH_ALEN);
+		ret = 0;
+		kref_put(&rdata->kref, fc_rport_destroy);
+	}
+	return ret;
+}
+
+/**
+ * fcoe_ctlr_vn_claim_notify() - handle received FIP VN2VN Claim Notification
+ * @fip: The FCoE controller
+ * @new: newly-parsed FCoE rport as a template for new rdata
+ *
+ * Called with ctlr_mutex held.
+ */
+static void fcoe_ctlr_vn_claim_notify(struct fcoe_ctlr *fip,
+				      struct fcoe_rport *new)
+{
+	if (new->flags & FIP_FL_REC_OR_P2P) {
+		LIBFCOE_FIP_DBG(fip, "send probe req for P2P/REC\n");
+		fcoe_ctlr_vn_send(fip, FIP_SC_VN_PROBE_REQ, fcoe_all_vn2vn, 0);
+		return;
+	}
+	switch (fip->state) {
+	case FIP_ST_VNMP_START:
+	case FIP_ST_VNMP_PROBE1:
+	case FIP_ST_VNMP_PROBE2:
+		if (new->rdata.ids.port_id == fip->port_id) {
+			LIBFCOE_FIP_DBG(fip, "vn_claim_notify: "
+					"restart, state %d\n",
+					fip->state);
+			fcoe_ctlr_vn_restart(fip);
+		}
+		break;
+	case FIP_ST_VNMP_CLAIM:
+	case FIP_ST_VNMP_UP:
+		if (new->rdata.ids.port_id == fip->port_id) {
+			if (new->rdata.ids.port_name > fip->lp->wwpn) {
+				LIBFCOE_FIP_DBG(fip, "vn_claim_notify: "
+						"restart, port_id collision\n");
+				fcoe_ctlr_vn_restart(fip);
+				break;
+			}
+			LIBFCOE_FIP_DBG(fip, "vn_claim_notify: "
+					"send claim notify\n");
+			fcoe_ctlr_vn_send_claim(fip);
+			break;
+		}
+		LIBFCOE_FIP_DBG(fip, "vn_claim_notify: send reply to %x\n",
+				new->rdata.ids.port_id);
+		fcoe_ctlr_vn_send(fip, FIP_SC_VN_CLAIM_REP, new->enode_mac,
+				  min((u32)new->fcoe_len,
+				      fcoe_ctlr_fcoe_size(fip)));
+		fcoe_ctlr_vn_add(fip, new);
+		break;
+	default:
+		LIBFCOE_FIP_DBG(fip, "vn_claim_notify: "
+				"ignoring claim from %x\n",
+				new->rdata.ids.port_id);
+		break;
+	}
+}
+
+/**
+ * fcoe_ctlr_vn_claim_resp() - handle received Claim Response
+ * @fip: The FCoE controller that received the frame
+ * @new: newly-parsed FCoE rport from the Claim Response
+ *
+ * Called with ctlr_mutex held.
+ */
+static void fcoe_ctlr_vn_claim_resp(struct fcoe_ctlr *fip,
+				    struct fcoe_rport *new)
+{
+	LIBFCOE_FIP_DBG(fip, "claim resp from from rport %x - state %s\n",
+			new->rdata.ids.port_id, fcoe_ctlr_state(fip->state));
+	if (fip->state == FIP_ST_VNMP_UP || fip->state == FIP_ST_VNMP_CLAIM)
+		fcoe_ctlr_vn_add(fip, new);
+}
+
+/**
+ * fcoe_ctlr_vn_beacon() - handle received beacon.
+ * @fip: The FCoE controller that received the frame
+ * @new: newly-parsed FCoE rport from the Beacon
+ *
+ * Called with ctlr_mutex held.
+ */
+static void fcoe_ctlr_vn_beacon(struct fcoe_ctlr *fip,
+				struct fcoe_rport *new)
+{
+	struct fc_lport *lport = fip->lp;
+	struct fc_rport_priv *rdata;
+	struct fcoe_rport *frport;
+
+	if (new->flags & FIP_FL_REC_OR_P2P) {
+		LIBFCOE_FIP_DBG(fip, "p2p beacon while in vn2vn mode\n");
+		fcoe_ctlr_vn_send(fip, FIP_SC_VN_PROBE_REQ, fcoe_all_vn2vn, 0);
+		return;
+	}
+	rdata = fc_rport_lookup(lport, new->rdata.ids.port_id);
+	if (rdata) {
+		if (rdata->ids.node_name == new->rdata.ids.node_name &&
+		    rdata->ids.port_name == new->rdata.ids.port_name) {
+			frport = fcoe_ctlr_rport(rdata);
+
+			LIBFCOE_FIP_DBG(fip, "beacon from rport %x\n",
+					rdata->ids.port_id);
+			if (!frport->time && fip->state == FIP_ST_VNMP_UP) {
+				LIBFCOE_FIP_DBG(fip, "beacon expired "
+						"for rport %x\n",
+						rdata->ids.port_id);
+				fc_rport_login(rdata);
+			}
+			frport->time = jiffies;
+		}
+		kref_put(&rdata->kref, fc_rport_destroy);
+		return;
+	}
+	if (fip->state != FIP_ST_VNMP_UP)
+		return;
+
+	/*
+	 * Beacon from a new neighbor.
+	 * Send a claim notify if one hasn't been sent recently.
+	 * Don't add the neighbor yet.
+	 */
+	LIBFCOE_FIP_DBG(fip, "beacon from new rport %x. sending claim notify\n",
+			new->rdata.ids.port_id);
+	if (time_after(jiffies,
+		       fip->sol_time + msecs_to_jiffies(FIP_VN_ANN_WAIT)))
+		fcoe_ctlr_vn_send_claim(fip);
+}
+
+/**
+ * fcoe_ctlr_vn_age() - Check for VN_ports without recent beacons
+ * @fip: The FCoE controller
+ *
+ * Called with ctlr_mutex held.
+ * Called only in state FIP_ST_VNMP_UP.
+ * Returns the soonest time for next age-out or a time far in the future.
+ */
+static unsigned long fcoe_ctlr_vn_age(struct fcoe_ctlr *fip)
+{
+	struct fc_lport *lport = fip->lp;
+	struct fc_rport_priv *rdata;
+	struct fcoe_rport *frport;
+	unsigned long next_time;
+	unsigned long deadline;
+
+	next_time = jiffies + msecs_to_jiffies(FIP_VN_BEACON_INT * 10);
+	mutex_lock(&lport->disc.disc_mutex);
+	list_for_each_entry_rcu(rdata, &lport->disc.rports, peers) {
+		if (!kref_get_unless_zero(&rdata->kref))
+			continue;
+		frport = fcoe_ctlr_rport(rdata);
+		if (!frport->time) {
+			kref_put(&rdata->kref, fc_rport_destroy);
+			continue;
+		}
+		deadline = frport->time +
+			   msecs_to_jiffies(FIP_VN_BEACON_INT * 25 / 10);
+		if (time_after_eq(jiffies, deadline)) {
+			frport->time = 0;
+			LIBFCOE_FIP_DBG(fip,
+				"port %16.16llx fc_id %6.6x beacon expired\n",
+				rdata->ids.port_name, rdata->ids.port_id);
+			fc_rport_logoff(rdata);
+		} else if (time_before(deadline, next_time))
+			next_time = deadline;
+		kref_put(&rdata->kref, fc_rport_destroy);
+	}
+	mutex_unlock(&lport->disc.disc_mutex);
+	return next_time;
+}
+
+/**
+ * fcoe_ctlr_vn_recv() - Receive a FIP frame
+ * @fip: The FCoE controller that received the frame
+ * @skb: The received FIP frame
+ *
+ * Returns non-zero if the frame is dropped.
+ * Always consumes the frame.
+ */
+static int fcoe_ctlr_vn_recv(struct fcoe_ctlr *fip, struct sk_buff *skb)
+{
+	struct fip_header *fiph;
+	enum fip_vn2vn_subcode sub;
+	struct fcoe_rport frport = { };
+	int rc, vlan_id = 0;
+
+	fiph = (struct fip_header *)skb->data;
+	sub = fiph->fip_subcode;
+
+	if (fip->lp->vlan)
+		vlan_id = skb_vlan_tag_get_id(skb);
+
+	if (vlan_id && vlan_id != fip->lp->vlan) {
+		LIBFCOE_FIP_DBG(fip, "vn_recv drop frame sub %x vlan %d\n",
+				sub, vlan_id);
+		rc = -EAGAIN;
+		goto drop;
+	}
+
+	rc = fcoe_ctlr_vn_parse(fip, skb, &frport);
+	if (rc) {
+		LIBFCOE_FIP_DBG(fip, "vn_recv vn_parse error %d\n", rc);
+		goto drop;
+	}
+
+	mutex_lock(&fip->ctlr_mutex);
+	switch (sub) {
+	case FIP_SC_VN_PROBE_REQ:
+		fcoe_ctlr_vn_probe_req(fip, &frport);
+		break;
+	case FIP_SC_VN_PROBE_REP:
+		fcoe_ctlr_vn_probe_reply(fip, &frport);
+		break;
+	case FIP_SC_VN_CLAIM_NOTIFY:
+		fcoe_ctlr_vn_claim_notify(fip, &frport);
+		break;
+	case FIP_SC_VN_CLAIM_REP:
+		fcoe_ctlr_vn_claim_resp(fip, &frport);
+		break;
+	case FIP_SC_VN_BEACON:
+		fcoe_ctlr_vn_beacon(fip, &frport);
+		break;
+	default:
+		LIBFCOE_FIP_DBG(fip, "vn_recv unknown subcode %d\n", sub);
+		rc = -1;
+		break;
+	}
+	mutex_unlock(&fip->ctlr_mutex);
+drop:
+	kfree_skb(skb);
+	return rc;
+}
+
+/**
+ * fcoe_ctlr_vlan_parse - parse vlan discovery request or response
+ * @fip: The FCoE controller
+ * @skb: incoming packet
+ * @frport: parsed FCoE rport from the probe request
+ *
+ * Returns non-zero error number on error.
+ * Does not consume the packet.
+ */
+static int fcoe_ctlr_vlan_parse(struct fcoe_ctlr *fip,
+			      struct sk_buff *skb,
+			      struct fcoe_rport *frport)
+{
+	struct fip_header *fiph;
+	struct fip_desc *desc = NULL;
+	struct fip_mac_desc *macd = NULL;
+	struct fip_wwn_desc *wwn = NULL;
+	size_t rlen;
+	size_t dlen;
+	u32 desc_mask = 0;
+	u32 dtype;
+	u8 sub;
+
+	fiph = (struct fip_header *)skb->data;
+	frport->flags = ntohs(fiph->fip_flags);
+
+	sub = fiph->fip_subcode;
+	switch (sub) {
+	case FIP_SC_VL_REQ:
+		desc_mask = BIT(FIP_DT_MAC) | BIT(FIP_DT_NAME);
+		break;
+	default:
+		LIBFCOE_FIP_DBG(fip, "vn_parse unknown subcode %u\n", sub);
+		return -EINVAL;
+	}
+
+	rlen = ntohs(fiph->fip_dl_len) * 4;
+	if (rlen + sizeof(*fiph) > skb->len)
+		return -EINVAL;
+
+	desc = (struct fip_desc *)(fiph + 1);
+	while (rlen > 0) {
+		dlen = desc->fip_dlen * FIP_BPW;
+		if (dlen < sizeof(*desc) || dlen > rlen)
+			return -EINVAL;
+
+		dtype = desc->fip_dtype;
+		if (dtype < 32) {
+			if (!(desc_mask & BIT(dtype))) {
+				LIBFCOE_FIP_DBG(fip,
+						"unexpected or duplicated desc "
+						"desc type %u in "
+						"FIP VN2VN subtype %u\n",
+						dtype, sub);
+				return -EINVAL;
+			}
+			desc_mask &= ~BIT(dtype);
+		}
+
+		switch (dtype) {
+		case FIP_DT_MAC:
+			if (dlen != sizeof(struct fip_mac_desc))
+				goto len_err;
+			macd = (struct fip_mac_desc *)desc;
+			if (!is_valid_ether_addr(macd->fd_mac)) {
+				LIBFCOE_FIP_DBG(fip,
+					"Invalid MAC addr %pM in FIP VN2VN\n",
+					 macd->fd_mac);
+				return -EINVAL;
+			}
+			memcpy(frport->enode_mac, macd->fd_mac, ETH_ALEN);
+			break;
+		case FIP_DT_NAME:
+			if (dlen != sizeof(struct fip_wwn_desc))
+				goto len_err;
+			wwn = (struct fip_wwn_desc *)desc;
+			frport->rdata.ids.node_name =
+				get_unaligned_be64(&wwn->fd_wwn);
+			break;
+		default:
+			LIBFCOE_FIP_DBG(fip, "unexpected descriptor type %x "
+					"in FIP probe\n", dtype);
+			/* standard says ignore unknown descriptors >= 128 */
+			if (dtype < FIP_DT_NON_CRITICAL)
+				return -EINVAL;
+			break;
+		}
+		desc = (struct fip_desc *)((char *)desc + dlen);
+		rlen -= dlen;
+	}
+	return 0;
+
+len_err:
+	LIBFCOE_FIP_DBG(fip, "FIP length error in descriptor type %x len %zu\n",
+			dtype, dlen);
+	return -EINVAL;
+}
+
+/**
+ * fcoe_ctlr_vlan_send() - Send a FIP VLAN Notification
+ * @fip: The FCoE controller
+ * @sub: sub-opcode for vlan notification or vn2vn vlan notification
+ * @dest: The destination Ethernet MAC address
+ */
+static void fcoe_ctlr_vlan_send(struct fcoe_ctlr *fip,
+			      enum fip_vlan_subcode sub,
+			      const u8 *dest)
+{
+	struct sk_buff *skb;
+	struct fip_vlan_notify_frame {
+		struct ethhdr eth;
+		struct fip_header fip;
+		struct fip_mac_desc mac;
+		struct fip_vlan_desc vlan;
+	} __packed * frame;
+	size_t len;
+	size_t dlen;
+
+	len = sizeof(*frame);
+	dlen = sizeof(frame->mac) + sizeof(frame->vlan);
+	len = max(len, sizeof(struct ethhdr));
+
+	skb = dev_alloc_skb(len);
+	if (!skb)
+		return;
+
+	LIBFCOE_FIP_DBG(fip, "fip %s vlan notification, vlan %d\n",
+			fip->mode == FIP_MODE_VN2VN ? "vn2vn" : "fcf",
+			fip->lp->vlan);
+
+	frame = (struct fip_vlan_notify_frame *)skb->data;
+	memset(frame, 0, len);
+	memcpy(frame->eth.h_dest, dest, ETH_ALEN);
+
+	memcpy(frame->eth.h_source, fip->ctl_src_addr, ETH_ALEN);
+	frame->eth.h_proto = htons(ETH_P_FIP);
+
+	frame->fip.fip_ver = FIP_VER_ENCAPS(FIP_VER);
+	frame->fip.fip_op = htons(FIP_OP_VLAN);
+	frame->fip.fip_subcode = sub;
+	frame->fip.fip_dl_len = htons(dlen / FIP_BPW);
+
+	frame->mac.fd_desc.fip_dtype = FIP_DT_MAC;
+	frame->mac.fd_desc.fip_dlen = sizeof(frame->mac) / FIP_BPW;
+	memcpy(frame->mac.fd_mac, fip->ctl_src_addr, ETH_ALEN);
+
+	frame->vlan.fd_desc.fip_dtype = FIP_DT_VLAN;
+	frame->vlan.fd_desc.fip_dlen = sizeof(frame->vlan) / FIP_BPW;
+	put_unaligned_be16(fip->lp->vlan, &frame->vlan.fd_vlan);
+
+	skb_put(skb, len);
+	skb->protocol = htons(ETH_P_FIP);
+	skb->priority = fip->priority;
+	skb_reset_mac_header(skb);
+	skb_reset_network_header(skb);
+
+	fip->send(fip, skb);
+}
+
+/**
+ * fcoe_ctlr_vlan_disc_reply() - send FIP VLAN Discovery Notification.
+ * @fip: The FCoE controller
+ * @frport: The newly-parsed FCoE rport from the Discovery Request
+ *
+ * Called with ctlr_mutex held.
+ */
+static void fcoe_ctlr_vlan_disc_reply(struct fcoe_ctlr *fip,
+				      struct fcoe_rport *frport)
+{
+	enum fip_vlan_subcode sub = FIP_SC_VL_NOTE;
+
+	if (fip->mode == FIP_MODE_VN2VN)
+		sub = FIP_SC_VL_VN2VN_NOTE;
+
+	fcoe_ctlr_vlan_send(fip, sub, frport->enode_mac);
+}
+
+/**
+ * fcoe_ctlr_vlan_recv - vlan request receive handler for VN2VN mode.
+ * @fip: The FCoE controller
+ * @skb: The received FIP packet
+ */
+static int fcoe_ctlr_vlan_recv(struct fcoe_ctlr *fip, struct sk_buff *skb)
+{
+	struct fip_header *fiph;
+	enum fip_vlan_subcode sub;
+	struct fcoe_rport frport = { };
+	int rc;
+
+	fiph = (struct fip_header *)skb->data;
+	sub = fiph->fip_subcode;
+	rc = fcoe_ctlr_vlan_parse(fip, skb, &frport);
+	if (rc) {
+		LIBFCOE_FIP_DBG(fip, "vlan_recv vlan_parse error %d\n", rc);
+		goto drop;
+	}
+	mutex_lock(&fip->ctlr_mutex);
+	if (sub == FIP_SC_VL_REQ)
+		fcoe_ctlr_vlan_disc_reply(fip, &frport);
+	mutex_unlock(&fip->ctlr_mutex);
+
+drop:
+	kfree_skb(skb);
+	return rc;
+}
+
+/**
+ * fcoe_ctlr_disc_recv - discovery receive handler for VN2VN mode.
+ * @lport: The local port
+ * @fp: The received frame
+ *
+ * This should never be called since we don't see RSCNs or other
+ * fabric-generated ELSes.
+ */
+static void fcoe_ctlr_disc_recv(struct fc_lport *lport, struct fc_frame *fp)
+{
+	struct fc_seq_els_data rjt_data;
+
+	rjt_data.reason = ELS_RJT_UNSUP;
+	rjt_data.explan = ELS_EXPL_NONE;
+	fc_seq_els_rsp_send(fp, ELS_LS_RJT, &rjt_data);
+	fc_frame_free(fp);
+}
+
+/*
+ * fcoe_ctlr_disc_start - start discovery for VN2VN mode.
+ *
+ * This sets a flag indicating that remote ports should be created
+ * and started for the peers we discover.  We use the disc_callback
+ * pointer as that flag.  Peers already discovered are created here.
+ *
+ * The lport lock is held during this call. The callback must be done
+ * later, without holding either the lport or discovery locks.
+ * The fcoe_ctlr lock may also be held during this call.
+ */
+static void fcoe_ctlr_disc_start(void (*callback)(struct fc_lport *,
+						  enum fc_disc_event),
+				 struct fc_lport *lport)
+{
+	struct fc_disc *disc = &lport->disc;
+	struct fcoe_ctlr *fip = disc->priv;
+
+	mutex_lock(&disc->disc_mutex);
+	disc->disc_callback = callback;
+	disc->disc_id = (disc->disc_id + 2) | 1;
+	disc->pending = 1;
+	schedule_work(&fip->timer_work);
+	mutex_unlock(&disc->disc_mutex);
+}
+
+/**
+ * fcoe_ctlr_vn_disc() - report FIP VN_port discovery results after claim state.
+ * @fip: The FCoE controller
+ *
+ * Starts the FLOGI and PLOGI login process to each discovered rport for which
+ * we've received at least one beacon.
+ * Performs the discovery complete callback.
+ */
+static void fcoe_ctlr_vn_disc(struct fcoe_ctlr *fip)
+{
+	struct fc_lport *lport = fip->lp;
+	struct fc_disc *disc = &lport->disc;
+	struct fc_rport_priv *rdata;
+	struct fcoe_rport *frport;
+	void (*callback)(struct fc_lport *, enum fc_disc_event);
+
+	mutex_lock(&disc->disc_mutex);
+	callback = disc->pending ? disc->disc_callback : NULL;
+	disc->pending = 0;
+	list_for_each_entry_rcu(rdata, &disc->rports, peers) {
+		if (!kref_get_unless_zero(&rdata->kref))
+			continue;
+		frport = fcoe_ctlr_rport(rdata);
+		if (frport->time)
+			fc_rport_login(rdata);
+		kref_put(&rdata->kref, fc_rport_destroy);
+	}
+	mutex_unlock(&disc->disc_mutex);
+	if (callback)
+		callback(lport, DISC_EV_SUCCESS);
+}
+
+/**
+ * fcoe_ctlr_vn_timeout - timer work function for VN2VN mode.
+ * @fip: The FCoE controller
+ */
+static void fcoe_ctlr_vn_timeout(struct fcoe_ctlr *fip)
+{
+	unsigned long next_time;
+	u8 mac[ETH_ALEN];
+	u32 new_port_id = 0;
+
+	mutex_lock(&fip->ctlr_mutex);
+	switch (fip->state) {
+	case FIP_ST_VNMP_START:
+		fcoe_ctlr_set_state(fip, FIP_ST_VNMP_PROBE1);
+		LIBFCOE_FIP_DBG(fip, "vn_timeout: send 1st probe request\n");
+		fcoe_ctlr_vn_send(fip, FIP_SC_VN_PROBE_REQ, fcoe_all_vn2vn, 0);
+		next_time = jiffies + msecs_to_jiffies(FIP_VN_PROBE_WAIT);
+		break;
+	case FIP_ST_VNMP_PROBE1:
+		fcoe_ctlr_set_state(fip, FIP_ST_VNMP_PROBE2);
+		LIBFCOE_FIP_DBG(fip, "vn_timeout: send 2nd probe request\n");
+		fcoe_ctlr_vn_send(fip, FIP_SC_VN_PROBE_REQ, fcoe_all_vn2vn, 0);
+		next_time = jiffies + msecs_to_jiffies(FIP_VN_ANN_WAIT);
+		break;
+	case FIP_ST_VNMP_PROBE2:
+		fcoe_ctlr_set_state(fip, FIP_ST_VNMP_CLAIM);
+		new_port_id = fip->port_id;
+		hton24(mac, FIP_VN_FC_MAP);
+		hton24(mac + 3, new_port_id);
+		fcoe_ctlr_map_dest(fip);
+		fip->update_mac(fip->lp, mac);
+		LIBFCOE_FIP_DBG(fip, "vn_timeout: send claim notify\n");
+		fcoe_ctlr_vn_send_claim(fip);
+		next_time = jiffies + msecs_to_jiffies(FIP_VN_ANN_WAIT);
+		break;
+	case FIP_ST_VNMP_CLAIM:
+		/*
+		 * This may be invoked either by starting discovery so don't
+		 * go to the next state unless it's been long enough.
+		 */
+		next_time = fip->sol_time + msecs_to_jiffies(FIP_VN_ANN_WAIT);
+		if (time_after_eq(jiffies, next_time)) {
+			fcoe_ctlr_set_state(fip, FIP_ST_VNMP_UP);
+			LIBFCOE_FIP_DBG(fip, "vn_timeout: send vn2vn beacon\n");
+			fcoe_ctlr_vn_send(fip, FIP_SC_VN_BEACON,
+					  fcoe_all_vn2vn, 0);
+			next_time = jiffies + msecs_to_jiffies(FIP_VN_ANN_WAIT);
+			fip->port_ka_time = next_time;
+		}
+		fcoe_ctlr_vn_disc(fip);
+		break;
+	case FIP_ST_VNMP_UP:
+		next_time = fcoe_ctlr_vn_age(fip);
+		if (time_after_eq(jiffies, fip->port_ka_time)) {
+			LIBFCOE_FIP_DBG(fip, "vn_timeout: send vn2vn beacon\n");
+			fcoe_ctlr_vn_send(fip, FIP_SC_VN_BEACON,
+					  fcoe_all_vn2vn, 0);
+			fip->port_ka_time = jiffies +
+				 msecs_to_jiffies(FIP_VN_BEACON_INT +
+					get_random_u32_below(FIP_VN_BEACON_FUZZ));
+		}
+		if (time_before(fip->port_ka_time, next_time))
+			next_time = fip->port_ka_time;
+		break;
+	case FIP_ST_LINK_WAIT:
+		goto unlock;
+	default:
+		WARN(1, "unexpected state %d\n", fip->state);
+		goto unlock;
+	}
+	mod_timer(&fip->timer, next_time);
+unlock:
+	mutex_unlock(&fip->ctlr_mutex);
+
+	/* If port ID is new, notify local port after dropping ctlr_mutex */
+	if (new_port_id)
+		fc_lport_set_local_id(fip->lp, new_port_id);
+}
+
+/**
+ * fcoe_ctlr_mode_set() - Set or reset the ctlr's mode
+ * @lport: The local port to be (re)configured
+ * @fip:   The FCoE controller whose mode is changing
+ * @fip_mode: The new fip mode
+ *
+ * Note that the we shouldn't be changing the libfc discovery settings
+ * (fc_disc_config) while an lport is going through the libfc state
+ * machine. The mode can only be changed when a fcoe_ctlr device is
+ * disabled, so that should ensure that this routine is only called
+ * when nothing is happening.
+ */
+static void fcoe_ctlr_mode_set(struct fc_lport *lport, struct fcoe_ctlr *fip,
+			       enum fip_mode fip_mode)
+{
+	void *priv;
+
+	WARN_ON(lport->state != LPORT_ST_RESET &&
+		lport->state != LPORT_ST_DISABLED);
+
+	if (fip_mode == FIP_MODE_VN2VN) {
+		lport->rport_priv_size = sizeof(struct fcoe_rport);
+		lport->point_to_multipoint = 1;
+		lport->tt.disc_recv_req = fcoe_ctlr_disc_recv;
+		lport->tt.disc_start = fcoe_ctlr_disc_start;
+		lport->tt.disc_stop = fcoe_ctlr_disc_stop;
+		lport->tt.disc_stop_final = fcoe_ctlr_disc_stop_final;
+		priv = fip;
+	} else {
+		lport->rport_priv_size = 0;
+		lport->point_to_multipoint = 0;
+		lport->tt.disc_recv_req = NULL;
+		lport->tt.disc_start = NULL;
+		lport->tt.disc_stop = NULL;
+		lport->tt.disc_stop_final = NULL;
+		priv = lport;
+	}
+
+	fc_disc_config(lport, priv);
+}
+
+/**
+ * fcoe_libfc_config() - Sets up libfc related properties for local port
+ * @lport:    The local port to configure libfc for
+ * @fip:      The FCoE controller in use by the local port
+ * @tt:       The libfc function template
+ * @init_fcp: If non-zero, the FCP portion of libfc should be initialized
+ *
+ * Returns : 0 for success
+ */
+int fcoe_libfc_config(struct fc_lport *lport, struct fcoe_ctlr *fip,
+		      const struct libfc_function_template *tt, int init_fcp)
+{
+	/* Set the function pointers set by the LLDD */
+	memcpy(&lport->tt, tt, sizeof(*tt));
+	if (init_fcp && fc_fcp_init(lport))
+		return -ENOMEM;
+	fc_exch_init(lport);
+	fc_elsct_init(lport);
+	fc_lport_init(lport);
+	fc_disc_init(lport);
+	fcoe_ctlr_mode_set(lport, fip, fip->mode);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(fcoe_libfc_config);
+
+void fcoe_fcf_get_selected(struct fcoe_fcf_device *fcf_dev)
+{
+	struct fcoe_ctlr_device *ctlr_dev = fcoe_fcf_dev_to_ctlr_dev(fcf_dev);
+	struct fcoe_ctlr *fip = fcoe_ctlr_device_priv(ctlr_dev);
+	struct fcoe_fcf *fcf;
+
+	mutex_lock(&fip->ctlr_mutex);
+	mutex_lock(&ctlr_dev->lock);
+
+	fcf = fcoe_fcf_device_priv(fcf_dev);
+	if (fcf)
+		fcf_dev->selected = (fcf == fip->sel_fcf) ? 1 : 0;
+	else
+		fcf_dev->selected = 0;
+
+	mutex_unlock(&ctlr_dev->lock);
+	mutex_unlock(&fip->ctlr_mutex);
+}
+EXPORT_SYMBOL(fcoe_fcf_get_selected);
+
+void fcoe_ctlr_set_fip_mode(struct fcoe_ctlr_device *ctlr_dev)
+{
+	struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev);
+	struct fc_lport *lport = ctlr->lp;
+
+	mutex_lock(&ctlr->ctlr_mutex);
+	switch (ctlr_dev->mode) {
+	case FIP_CONN_TYPE_VN2VN:
+		ctlr->mode = FIP_MODE_VN2VN;
+		break;
+	case FIP_CONN_TYPE_FABRIC:
+	default:
+		ctlr->mode = FIP_MODE_FABRIC;
+		break;
+	}
+
+	mutex_unlock(&ctlr->ctlr_mutex);
+
+	fcoe_ctlr_mode_set(lport, ctlr, ctlr->mode);
+}
+EXPORT_SYMBOL(fcoe_ctlr_set_fip_mode);
diff --git a/drivers/scsi/fcoe/fcoe_sysfs.c b/drivers/scsi/fcoe/fcoe_sysfs.c
new file mode 100644
index 000000000..afea5763a
--- /dev/null
+++ b/drivers/scsi/fcoe/fcoe_sysfs.c
@@ -0,0 +1,1042 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright(c) 2011 - 2012 Intel Corporation. All rights reserved.
+ *
+ * Maintained at www.Open-FCoE.org
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/etherdevice.h>
+#include <linux/ctype.h>
+#include <linux/string.h>
+
+#include <scsi/fcoe_sysfs.h>
+#include <scsi/libfcoe.h>
+
+/*
+ * OK to include local libfcoe.h for debug_logging, but cannot include
+ * <scsi/libfcoe.h> otherwise non-netdev based fcoe solutions would have
+ * have to include more than fcoe_sysfs.h.
+ */
+#include "libfcoe.h"
+
+static atomic_t ctlr_num;
+static atomic_t fcf_num;
+
+/*
+ * fcoe_fcf_dev_loss_tmo: the default number of seconds that fcoe sysfs
+ * should insulate the loss of a fcf.
+ */
+static unsigned int fcoe_fcf_dev_loss_tmo = 1800;  /* seconds */
+
+module_param_named(fcf_dev_loss_tmo, fcoe_fcf_dev_loss_tmo,
+		   uint, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(fcf_dev_loss_tmo,
+		 "Maximum number of seconds that libfcoe should"
+		 " insulate the loss of a fcf. Once this value is"
+		 " exceeded, the fcf is removed.");
+
+/*
+ * These are used by the fcoe_*_show_function routines, they
+ * are intentionally placed in the .c file as they're not intended
+ * for use throughout the code.
+ */
+#define fcoe_ctlr_id(x)				\
+	((x)->id)
+#define fcoe_ctlr_work_q(x)			\
+	((x)->work_q)
+#define fcoe_ctlr_devloss_work_q(x)		\
+	((x)->devloss_work_q)
+#define fcoe_ctlr_mode(x)			\
+	((x)->mode)
+#define fcoe_ctlr_fcf_dev_loss_tmo(x)		\
+	((x)->fcf_dev_loss_tmo)
+#define fcoe_ctlr_link_fail(x)			\
+	((x)->lesb.lesb_link_fail)
+#define fcoe_ctlr_vlink_fail(x)			\
+	((x)->lesb.lesb_vlink_fail)
+#define fcoe_ctlr_miss_fka(x)			\
+	((x)->lesb.lesb_miss_fka)
+#define fcoe_ctlr_symb_err(x)			\
+	((x)->lesb.lesb_symb_err)
+#define fcoe_ctlr_err_block(x)			\
+	((x)->lesb.lesb_err_block)
+#define fcoe_ctlr_fcs_error(x)			\
+	((x)->lesb.lesb_fcs_error)
+#define fcoe_ctlr_enabled(x)			\
+	((x)->enabled)
+#define fcoe_fcf_state(x)			\
+	((x)->state)
+#define fcoe_fcf_fabric_name(x)			\
+	((x)->fabric_name)
+#define fcoe_fcf_switch_name(x)			\
+	((x)->switch_name)
+#define fcoe_fcf_fc_map(x)			\
+	((x)->fc_map)
+#define fcoe_fcf_vfid(x)			\
+	((x)->vfid)
+#define fcoe_fcf_mac(x)				\
+	((x)->mac)
+#define fcoe_fcf_priority(x)			\
+	((x)->priority)
+#define fcoe_fcf_fka_period(x)			\
+	((x)->fka_period)
+#define fcoe_fcf_dev_loss_tmo(x)		\
+	((x)->dev_loss_tmo)
+#define fcoe_fcf_selected(x)			\
+	((x)->selected)
+#define fcoe_fcf_vlan_id(x)			\
+	((x)->vlan_id)
+
+/*
+ * dev_loss_tmo attribute
+ */
+static int fcoe_str_to_dev_loss(const char *buf, unsigned long *val)
+{
+	int ret;
+
+	ret = kstrtoul(buf, 0, val);
+	if (ret)
+		return -EINVAL;
+	/*
+	 * Check for overflow; dev_loss_tmo is u32
+	 */
+	if (*val > UINT_MAX)
+		return -EINVAL;
+
+	return 0;
+}
+
+static int fcoe_fcf_set_dev_loss_tmo(struct fcoe_fcf_device *fcf,
+				     unsigned long val)
+{
+	if ((fcf->state == FCOE_FCF_STATE_UNKNOWN) ||
+	    (fcf->state == FCOE_FCF_STATE_DISCONNECTED) ||
+	    (fcf->state == FCOE_FCF_STATE_DELETED))
+		return -EBUSY;
+	/*
+	 * Check for overflow; dev_loss_tmo is u32
+	 */
+	if (val > UINT_MAX)
+		return -EINVAL;
+
+	fcoe_fcf_dev_loss_tmo(fcf) = val;
+	return 0;
+}
+
+#define FCOE_DEVICE_ATTR(_prefix, _name, _mode, _show, _store)	\
+struct device_attribute device_attr_fcoe_##_prefix##_##_name =	\
+	__ATTR(_name, _mode, _show, _store)
+
+#define fcoe_ctlr_show_function(field, format_string, sz, cast)	\
+static ssize_t show_fcoe_ctlr_device_##field(struct device *dev, \
+					    struct device_attribute *attr, \
+					    char *buf)			\
+{									\
+	struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev);		\
+	if (ctlr->f->get_fcoe_ctlr_##field)				\
+		ctlr->f->get_fcoe_ctlr_##field(ctlr);			\
+	return snprintf(buf, sz, format_string,				\
+			cast fcoe_ctlr_##field(ctlr));			\
+}
+
+#define fcoe_fcf_show_function(field, format_string, sz, cast)	\
+static ssize_t show_fcoe_fcf_device_##field(struct device *dev,	\
+					   struct device_attribute *attr, \
+					   char *buf)			\
+{									\
+	struct fcoe_fcf_device *fcf = dev_to_fcf(dev);			\
+	struct fcoe_ctlr_device *ctlr = fcoe_fcf_dev_to_ctlr_dev(fcf);	\
+	if (ctlr->f->get_fcoe_fcf_##field)				\
+		ctlr->f->get_fcoe_fcf_##field(fcf);			\
+	return snprintf(buf, sz, format_string,				\
+			cast fcoe_fcf_##field(fcf));			\
+}
+
+#define fcoe_ctlr_private_show_function(field, format_string, sz, cast)	\
+static ssize_t show_fcoe_ctlr_device_##field(struct device *dev, \
+					    struct device_attribute *attr, \
+					    char *buf)			\
+{									\
+	struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev);		\
+	return snprintf(buf, sz, format_string, cast fcoe_ctlr_##field(ctlr)); \
+}
+
+#define fcoe_fcf_private_show_function(field, format_string, sz, cast)	\
+static ssize_t show_fcoe_fcf_device_##field(struct device *dev,	\
+					   struct device_attribute *attr, \
+					   char *buf)			\
+{								\
+	struct fcoe_fcf_device *fcf = dev_to_fcf(dev);			\
+	return snprintf(buf, sz, format_string, cast fcoe_fcf_##field(fcf)); \
+}
+
+#define fcoe_ctlr_private_rd_attr(field, format_string, sz)		\
+	fcoe_ctlr_private_show_function(field, format_string, sz, )	\
+	static FCOE_DEVICE_ATTR(ctlr, field, S_IRUGO,			\
+				show_fcoe_ctlr_device_##field, NULL)
+
+#define fcoe_ctlr_rd_attr(field, format_string, sz)			\
+	fcoe_ctlr_show_function(field, format_string, sz, )		\
+	static FCOE_DEVICE_ATTR(ctlr, field, S_IRUGO,			\
+				show_fcoe_ctlr_device_##field, NULL)
+
+#define fcoe_fcf_rd_attr(field, format_string, sz)			\
+	fcoe_fcf_show_function(field, format_string, sz, )		\
+	static FCOE_DEVICE_ATTR(fcf, field, S_IRUGO,			\
+				show_fcoe_fcf_device_##field, NULL)
+
+#define fcoe_fcf_private_rd_attr(field, format_string, sz)		\
+	fcoe_fcf_private_show_function(field, format_string, sz, )	\
+	static FCOE_DEVICE_ATTR(fcf, field, S_IRUGO,			\
+				show_fcoe_fcf_device_##field, NULL)
+
+#define fcoe_ctlr_private_rd_attr_cast(field, format_string, sz, cast)	\
+	fcoe_ctlr_private_show_function(field, format_string, sz, (cast)) \
+	static FCOE_DEVICE_ATTR(ctlr, field, S_IRUGO,			\
+				show_fcoe_ctlr_device_##field, NULL)
+
+#define fcoe_fcf_private_rd_attr_cast(field, format_string, sz, cast)	\
+	fcoe_fcf_private_show_function(field, format_string, sz, (cast)) \
+	static FCOE_DEVICE_ATTR(fcf, field, S_IRUGO,			\
+				show_fcoe_fcf_device_##field, NULL)
+
+#define fcoe_enum_name_search(title, table_type, table)			\
+static const char *get_fcoe_##title##_name(enum table_type table_key)	\
+{									\
+	if (table_key < 0 || table_key >= ARRAY_SIZE(table))		\
+		return NULL;						\
+	return table[table_key];					\
+}
+
+static const char * const fip_conn_type_names[] = {
+	[ FIP_CONN_TYPE_UNKNOWN ] = "Unknown",
+	[ FIP_CONN_TYPE_FABRIC ]  = "Fabric",
+	[ FIP_CONN_TYPE_VN2VN ]   = "VN2VN",
+};
+fcoe_enum_name_search(ctlr_mode, fip_conn_type, fip_conn_type_names)
+
+static char *fcf_state_names[] = {
+	[ FCOE_FCF_STATE_UNKNOWN ]      = "Unknown",
+	[ FCOE_FCF_STATE_DISCONNECTED ] = "Disconnected",
+	[ FCOE_FCF_STATE_CONNECTED ]    = "Connected",
+};
+fcoe_enum_name_search(fcf_state, fcf_state, fcf_state_names)
+#define FCOE_FCF_STATE_MAX_NAMELEN 50
+
+static ssize_t show_fcf_state(struct device *dev,
+			      struct device_attribute *attr,
+			      char *buf)
+{
+	struct fcoe_fcf_device *fcf = dev_to_fcf(dev);
+	const char *name;
+	name = get_fcoe_fcf_state_name(fcf->state);
+	if (!name)
+		return -EINVAL;
+	return snprintf(buf, FCOE_FCF_STATE_MAX_NAMELEN, "%s\n", name);
+}
+static FCOE_DEVICE_ATTR(fcf, state, S_IRUGO, show_fcf_state, NULL);
+
+#define FCOE_MAX_MODENAME_LEN 20
+static ssize_t show_ctlr_mode(struct device *dev,
+			      struct device_attribute *attr,
+			      char *buf)
+{
+	struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev);
+	const char *name;
+
+	name = get_fcoe_ctlr_mode_name(ctlr->mode);
+	if (!name)
+		return -EINVAL;
+	return snprintf(buf, FCOE_MAX_MODENAME_LEN,
+			"%s\n", name);
+}
+
+static ssize_t store_ctlr_mode(struct device *dev,
+			       struct device_attribute *attr,
+			       const char *buf, size_t count)
+{
+	struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev);
+	int res;
+
+	if (count > FCOE_MAX_MODENAME_LEN)
+		return -EINVAL;
+
+
+	switch (ctlr->enabled) {
+	case FCOE_CTLR_ENABLED:
+		LIBFCOE_SYSFS_DBG(ctlr, "Cannot change mode when enabled.\n");
+		return -EBUSY;
+	case FCOE_CTLR_DISABLED:
+		if (!ctlr->f->set_fcoe_ctlr_mode) {
+			LIBFCOE_SYSFS_DBG(ctlr,
+					  "Mode change not supported by LLD.\n");
+			return -ENOTSUPP;
+		}
+
+		res = sysfs_match_string(fip_conn_type_names, buf);
+		if (res < 0 || res == FIP_CONN_TYPE_UNKNOWN) {
+			LIBFCOE_SYSFS_DBG(ctlr, "Unknown mode %s provided.\n",
+					  buf);
+			return -EINVAL;
+		}
+		ctlr->mode = res;
+
+		ctlr->f->set_fcoe_ctlr_mode(ctlr);
+		LIBFCOE_SYSFS_DBG(ctlr, "Mode changed to %s.\n", buf);
+
+		return count;
+	case FCOE_CTLR_UNUSED:
+	default:
+		LIBFCOE_SYSFS_DBG(ctlr, "Mode change not supported.\n");
+		return -ENOTSUPP;
+	}
+}
+
+static FCOE_DEVICE_ATTR(ctlr, mode, S_IRUGO | S_IWUSR,
+			show_ctlr_mode, store_ctlr_mode);
+
+static ssize_t store_ctlr_enabled(struct device *dev,
+				  struct device_attribute *attr,
+				  const char *buf, size_t count)
+{
+	struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev);
+	bool enabled;
+	int rc;
+
+	if (*buf == '1')
+		enabled = true;
+	else if (*buf == '0')
+		enabled = false;
+	else
+		return -EINVAL;
+
+	switch (ctlr->enabled) {
+	case FCOE_CTLR_ENABLED:
+		if (enabled)
+			return count;
+		ctlr->enabled = FCOE_CTLR_DISABLED;
+		break;
+	case FCOE_CTLR_DISABLED:
+		if (!enabled)
+			return count;
+		ctlr->enabled = FCOE_CTLR_ENABLED;
+		break;
+	case FCOE_CTLR_UNUSED:
+		return -ENOTSUPP;
+	}
+
+	rc = ctlr->f->set_fcoe_ctlr_enabled(ctlr);
+	if (rc)
+		return rc;
+
+	return count;
+}
+
+static char *ctlr_enabled_state_names[] = {
+	[ FCOE_CTLR_ENABLED ]  = "1",
+	[ FCOE_CTLR_DISABLED ] = "0",
+};
+fcoe_enum_name_search(ctlr_enabled_state, ctlr_enabled_state,
+		      ctlr_enabled_state_names)
+#define FCOE_CTLR_ENABLED_MAX_NAMELEN 50
+
+static ssize_t show_ctlr_enabled_state(struct device *dev,
+				       struct device_attribute *attr,
+				       char *buf)
+{
+	struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev);
+	const char *name;
+
+	name = get_fcoe_ctlr_enabled_state_name(ctlr->enabled);
+	if (!name)
+		return -EINVAL;
+	return snprintf(buf, FCOE_CTLR_ENABLED_MAX_NAMELEN,
+			"%s\n", name);
+}
+
+static FCOE_DEVICE_ATTR(ctlr, enabled, S_IRUGO | S_IWUSR,
+			show_ctlr_enabled_state,
+			store_ctlr_enabled);
+
+static ssize_t store_ctlr_fip_resp(struct device *dev,
+			      struct device_attribute *attr,
+			      const char *buf, size_t count)
+{
+	struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev);
+	struct fcoe_ctlr *fip = fcoe_ctlr_device_priv(ctlr);
+
+	mutex_lock(&fip->ctlr_mutex);
+	if ((buf[1] == '\0') || ((buf[1] == '\n') && (buf[2] == '\0'))) {
+		if (buf[0] == '1') {
+			fip->fip_resp = 1;
+			mutex_unlock(&fip->ctlr_mutex);
+			return count;
+		}
+		if (buf[0] == '0') {
+			fip->fip_resp = 0;
+			mutex_unlock(&fip->ctlr_mutex);
+			return count;
+		}
+	}
+	mutex_unlock(&fip->ctlr_mutex);
+	return -EINVAL;
+}
+
+static ssize_t show_ctlr_fip_resp(struct device *dev,
+				  struct device_attribute *attr,
+				  char *buf)
+{
+	struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev);
+	struct fcoe_ctlr *fip = fcoe_ctlr_device_priv(ctlr);
+
+	return sprintf(buf, "%d\n", fip->fip_resp ? 1 : 0);
+}
+
+static FCOE_DEVICE_ATTR(ctlr, fip_vlan_responder, S_IRUGO | S_IWUSR,
+			show_ctlr_fip_resp,
+			store_ctlr_fip_resp);
+
+static ssize_t
+fcoe_ctlr_var_store(u32 *var, const char *buf, size_t count)
+{
+	int err;
+	unsigned long v;
+
+	err = kstrtoul(buf, 10, &v);
+	if (err || v > UINT_MAX)
+		return -EINVAL;
+
+	*var = v;
+
+	return count;
+}
+
+static ssize_t store_ctlr_r_a_tov(struct device *dev,
+				  struct device_attribute *attr,
+				  const char *buf, size_t count)
+{
+	struct fcoe_ctlr_device *ctlr_dev = dev_to_ctlr(dev);
+	struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev);
+
+	if (ctlr_dev->enabled == FCOE_CTLR_ENABLED)
+		return -EBUSY;
+	if (ctlr_dev->enabled == FCOE_CTLR_DISABLED)
+		return fcoe_ctlr_var_store(&ctlr->lp->r_a_tov, buf, count);
+	return -ENOTSUPP;
+}
+
+static ssize_t show_ctlr_r_a_tov(struct device *dev,
+				 struct device_attribute *attr,
+				 char *buf)
+{
+	struct fcoe_ctlr_device *ctlr_dev = dev_to_ctlr(dev);
+	struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev);
+
+	return sprintf(buf, "%d\n", ctlr->lp->r_a_tov);
+}
+
+static FCOE_DEVICE_ATTR(ctlr, r_a_tov, S_IRUGO | S_IWUSR,
+			show_ctlr_r_a_tov, store_ctlr_r_a_tov);
+
+static ssize_t store_ctlr_e_d_tov(struct device *dev,
+				  struct device_attribute *attr,
+				  const char *buf, size_t count)
+{
+	struct fcoe_ctlr_device *ctlr_dev = dev_to_ctlr(dev);
+	struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev);
+
+	if (ctlr_dev->enabled == FCOE_CTLR_ENABLED)
+		return -EBUSY;
+	if (ctlr_dev->enabled == FCOE_CTLR_DISABLED)
+		return fcoe_ctlr_var_store(&ctlr->lp->e_d_tov, buf, count);
+	return -ENOTSUPP;
+}
+
+static ssize_t show_ctlr_e_d_tov(struct device *dev,
+				 struct device_attribute *attr,
+				 char *buf)
+{
+	struct fcoe_ctlr_device *ctlr_dev = dev_to_ctlr(dev);
+	struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev);
+
+	return sprintf(buf, "%d\n", ctlr->lp->e_d_tov);
+}
+
+static FCOE_DEVICE_ATTR(ctlr, e_d_tov, S_IRUGO | S_IWUSR,
+			show_ctlr_e_d_tov, store_ctlr_e_d_tov);
+
+static ssize_t
+store_private_fcoe_ctlr_fcf_dev_loss_tmo(struct device *dev,
+					 struct device_attribute *attr,
+					 const char *buf, size_t count)
+{
+	struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev);
+	struct fcoe_fcf_device *fcf;
+	unsigned long val;
+	int rc;
+
+	rc = fcoe_str_to_dev_loss(buf, &val);
+	if (rc)
+		return rc;
+
+	fcoe_ctlr_fcf_dev_loss_tmo(ctlr) = val;
+	mutex_lock(&ctlr->lock);
+	list_for_each_entry(fcf, &ctlr->fcfs, peers)
+		fcoe_fcf_set_dev_loss_tmo(fcf, val);
+	mutex_unlock(&ctlr->lock);
+	return count;
+}
+fcoe_ctlr_private_show_function(fcf_dev_loss_tmo, "%d\n", 20, );
+static FCOE_DEVICE_ATTR(ctlr, fcf_dev_loss_tmo, S_IRUGO | S_IWUSR,
+			show_fcoe_ctlr_device_fcf_dev_loss_tmo,
+			store_private_fcoe_ctlr_fcf_dev_loss_tmo);
+
+/* Link Error Status Block (LESB) */
+fcoe_ctlr_rd_attr(link_fail, "%u\n", 20);
+fcoe_ctlr_rd_attr(vlink_fail, "%u\n", 20);
+fcoe_ctlr_rd_attr(miss_fka, "%u\n", 20);
+fcoe_ctlr_rd_attr(symb_err, "%u\n", 20);
+fcoe_ctlr_rd_attr(err_block, "%u\n", 20);
+fcoe_ctlr_rd_attr(fcs_error, "%u\n", 20);
+
+fcoe_fcf_private_rd_attr_cast(fabric_name, "0x%llx\n", 20, unsigned long long);
+fcoe_fcf_private_rd_attr_cast(switch_name, "0x%llx\n", 20, unsigned long long);
+fcoe_fcf_private_rd_attr(priority, "%u\n", 20);
+fcoe_fcf_private_rd_attr(fc_map, "0x%x\n", 20);
+fcoe_fcf_private_rd_attr(vfid, "%u\n", 20);
+fcoe_fcf_private_rd_attr(mac, "%pM\n", 20);
+fcoe_fcf_private_rd_attr(fka_period, "%u\n", 20);
+fcoe_fcf_rd_attr(selected, "%u\n", 20);
+fcoe_fcf_rd_attr(vlan_id, "%u\n", 20);
+
+fcoe_fcf_private_show_function(dev_loss_tmo, "%d\n", 20, )
+static ssize_t
+store_fcoe_fcf_dev_loss_tmo(struct device *dev, struct device_attribute *attr,
+			    const char *buf, size_t count)
+{
+	struct fcoe_fcf_device *fcf = dev_to_fcf(dev);
+	unsigned long val;
+	int rc;
+
+	rc = fcoe_str_to_dev_loss(buf, &val);
+	if (rc)
+		return rc;
+
+	rc = fcoe_fcf_set_dev_loss_tmo(fcf, val);
+	if (rc)
+		return rc;
+	return count;
+}
+static FCOE_DEVICE_ATTR(fcf, dev_loss_tmo, S_IRUGO | S_IWUSR,
+			show_fcoe_fcf_device_dev_loss_tmo,
+			store_fcoe_fcf_dev_loss_tmo);
+
+static struct attribute *fcoe_ctlr_lesb_attrs[] = {
+	&device_attr_fcoe_ctlr_link_fail.attr,
+	&device_attr_fcoe_ctlr_vlink_fail.attr,
+	&device_attr_fcoe_ctlr_miss_fka.attr,
+	&device_attr_fcoe_ctlr_symb_err.attr,
+	&device_attr_fcoe_ctlr_err_block.attr,
+	&device_attr_fcoe_ctlr_fcs_error.attr,
+	NULL,
+};
+
+static struct attribute_group fcoe_ctlr_lesb_attr_group = {
+	.name = "lesb",
+	.attrs = fcoe_ctlr_lesb_attrs,
+};
+
+static struct attribute *fcoe_ctlr_attrs[] = {
+	&device_attr_fcoe_ctlr_fip_vlan_responder.attr,
+	&device_attr_fcoe_ctlr_fcf_dev_loss_tmo.attr,
+	&device_attr_fcoe_ctlr_r_a_tov.attr,
+	&device_attr_fcoe_ctlr_e_d_tov.attr,
+	&device_attr_fcoe_ctlr_enabled.attr,
+	&device_attr_fcoe_ctlr_mode.attr,
+	NULL,
+};
+
+static struct attribute_group fcoe_ctlr_attr_group = {
+	.attrs = fcoe_ctlr_attrs,
+};
+
+static const struct attribute_group *fcoe_ctlr_attr_groups[] = {
+	&fcoe_ctlr_attr_group,
+	&fcoe_ctlr_lesb_attr_group,
+	NULL,
+};
+
+static struct attribute *fcoe_fcf_attrs[] = {
+	&device_attr_fcoe_fcf_fabric_name.attr,
+	&device_attr_fcoe_fcf_switch_name.attr,
+	&device_attr_fcoe_fcf_dev_loss_tmo.attr,
+	&device_attr_fcoe_fcf_fc_map.attr,
+	&device_attr_fcoe_fcf_vfid.attr,
+	&device_attr_fcoe_fcf_mac.attr,
+	&device_attr_fcoe_fcf_priority.attr,
+	&device_attr_fcoe_fcf_fka_period.attr,
+	&device_attr_fcoe_fcf_state.attr,
+	&device_attr_fcoe_fcf_selected.attr,
+	&device_attr_fcoe_fcf_vlan_id.attr,
+	NULL
+};
+
+static struct attribute_group fcoe_fcf_attr_group = {
+	.attrs = fcoe_fcf_attrs,
+};
+
+static const struct attribute_group *fcoe_fcf_attr_groups[] = {
+	&fcoe_fcf_attr_group,
+	NULL,
+};
+
+static const struct bus_type fcoe_bus_type;
+
+static int fcoe_bus_match(struct device *dev,
+			  const struct device_driver *drv)
+{
+	if (dev->bus == &fcoe_bus_type)
+		return 1;
+	return 0;
+}
+
+/**
+ * fcoe_ctlr_device_release() - Release the FIP ctlr memory
+ * @dev: Pointer to the FIP ctlr's embedded device
+ *
+ * Called when the last FIP ctlr reference is released.
+ */
+static void fcoe_ctlr_device_release(struct device *dev)
+{
+	struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev);
+	kfree(ctlr);
+}
+
+/**
+ * fcoe_fcf_device_release() - Release the FIP fcf memory
+ * @dev: Pointer to the fcf's embedded device
+ *
+ * Called when the last FIP fcf reference is released.
+ */
+static void fcoe_fcf_device_release(struct device *dev)
+{
+	struct fcoe_fcf_device *fcf = dev_to_fcf(dev);
+	kfree(fcf);
+}
+
+static const struct device_type fcoe_ctlr_device_type = {
+	.name = "fcoe_ctlr",
+	.groups = fcoe_ctlr_attr_groups,
+	.release = fcoe_ctlr_device_release,
+};
+
+static const struct device_type fcoe_fcf_device_type = {
+	.name = "fcoe_fcf",
+	.groups = fcoe_fcf_attr_groups,
+	.release = fcoe_fcf_device_release,
+};
+
+static ssize_t ctlr_create_store(const struct bus_type *bus, const char *buf,
+				 size_t count)
+{
+	return fcoe_ctlr_create_store(buf, count);
+}
+static BUS_ATTR_WO(ctlr_create);
+
+static ssize_t ctlr_destroy_store(const struct bus_type *bus, const char *buf,
+				  size_t count)
+{
+	return fcoe_ctlr_destroy_store(buf, count);
+}
+static BUS_ATTR_WO(ctlr_destroy);
+
+static struct attribute *fcoe_bus_attrs[] = {
+	&bus_attr_ctlr_create.attr,
+	&bus_attr_ctlr_destroy.attr,
+	NULL,
+};
+ATTRIBUTE_GROUPS(fcoe_bus);
+
+static const struct bus_type fcoe_bus_type = {
+	.name = "fcoe",
+	.match = &fcoe_bus_match,
+	.bus_groups = fcoe_bus_groups,
+};
+
+/**
+ * fcoe_ctlr_device_flush_work() - Flush a FIP ctlr's workqueue
+ * @ctlr: Pointer to the FIP ctlr whose workqueue is to be flushed
+ */
+static void fcoe_ctlr_device_flush_work(struct fcoe_ctlr_device *ctlr)
+{
+	if (!fcoe_ctlr_work_q(ctlr)) {
+		printk(KERN_ERR
+		       "ERROR: FIP Ctlr '%d' attempted to flush work, "
+		       "when no workqueue created.\n", ctlr->id);
+		dump_stack();
+		return;
+	}
+
+	flush_workqueue(fcoe_ctlr_work_q(ctlr));
+}
+
+/**
+ * fcoe_ctlr_device_queue_work() - Schedule work for a FIP ctlr's workqueue
+ * @ctlr: Pointer to the FIP ctlr who owns the devloss workqueue
+ * @work:   Work to queue for execution
+ *
+ * Return value:
+ *	1 on success / 0 already queued / < 0 for error
+ */
+static int fcoe_ctlr_device_queue_work(struct fcoe_ctlr_device *ctlr,
+				       struct work_struct *work)
+{
+	if (unlikely(!fcoe_ctlr_work_q(ctlr))) {
+		printk(KERN_ERR
+		       "ERROR: FIP Ctlr '%d' attempted to queue work, "
+		       "when no workqueue created.\n", ctlr->id);
+		dump_stack();
+
+		return -EINVAL;
+	}
+
+	return queue_work(fcoe_ctlr_work_q(ctlr), work);
+}
+
+/**
+ * fcoe_ctlr_device_flush_devloss() - Flush a FIP ctlr's devloss workqueue
+ * @ctlr: Pointer to FIP ctlr whose workqueue is to be flushed
+ */
+static void fcoe_ctlr_device_flush_devloss(struct fcoe_ctlr_device *ctlr)
+{
+	if (!fcoe_ctlr_devloss_work_q(ctlr)) {
+		printk(KERN_ERR
+		       "ERROR: FIP Ctlr '%d' attempted to flush work, "
+		       "when no workqueue created.\n", ctlr->id);
+		dump_stack();
+		return;
+	}
+
+	flush_workqueue(fcoe_ctlr_devloss_work_q(ctlr));
+}
+
+/**
+ * fcoe_ctlr_device_queue_devloss_work() - Schedule work for a FIP ctlr's devloss workqueue
+ * @ctlr: Pointer to the FIP ctlr who owns the devloss workqueue
+ * @work:   Work to queue for execution
+ * @delay:  jiffies to delay the work queuing
+ *
+ * Return value:
+ *	1 on success / 0 already queued / < 0 for error
+ */
+static int fcoe_ctlr_device_queue_devloss_work(struct fcoe_ctlr_device *ctlr,
+					       struct delayed_work *work,
+					       unsigned long delay)
+{
+	if (unlikely(!fcoe_ctlr_devloss_work_q(ctlr))) {
+		printk(KERN_ERR
+		       "ERROR: FIP Ctlr '%d' attempted to queue work, "
+		       "when no workqueue created.\n", ctlr->id);
+		dump_stack();
+
+		return -EINVAL;
+	}
+
+	return queue_delayed_work(fcoe_ctlr_devloss_work_q(ctlr), work, delay);
+}
+
+static int fcoe_fcf_device_match(struct fcoe_fcf_device *new,
+				 struct fcoe_fcf_device *old)
+{
+	if (new->switch_name == old->switch_name &&
+	    new->fabric_name == old->fabric_name &&
+	    new->fc_map == old->fc_map &&
+	    ether_addr_equal(new->mac, old->mac))
+		return 1;
+	return 0;
+}
+
+/**
+ * fcoe_ctlr_device_add() - Add a FIP ctlr to sysfs
+ * @parent:    The parent device to which the fcoe_ctlr instance
+ *             should be attached
+ * @f:         The LLD's FCoE sysfs function template pointer
+ * @priv_size: Size to be allocated with the fcoe_ctlr_device for the LLD
+ *
+ * This routine allocates a FIP ctlr object with some additional memory
+ * for the LLD. The FIP ctlr is initialized, added to sysfs and then
+ * attributes are added to it.
+ */
+struct fcoe_ctlr_device *fcoe_ctlr_device_add(struct device *parent,
+				    struct fcoe_sysfs_function_template *f,
+				    int priv_size)
+{
+	struct fcoe_ctlr_device *ctlr;
+	int error = 0;
+
+	ctlr = kzalloc(sizeof(struct fcoe_ctlr_device) + priv_size,
+		       GFP_KERNEL);
+	if (!ctlr)
+		goto out;
+
+	ctlr->id = atomic_inc_return(&ctlr_num) - 1;
+	ctlr->f = f;
+	ctlr->mode = FIP_CONN_TYPE_FABRIC;
+	INIT_LIST_HEAD(&ctlr->fcfs);
+	mutex_init(&ctlr->lock);
+	ctlr->dev.parent = parent;
+	ctlr->dev.bus = &fcoe_bus_type;
+	ctlr->dev.type = &fcoe_ctlr_device_type;
+
+	ctlr->fcf_dev_loss_tmo = fcoe_fcf_dev_loss_tmo;
+
+	ctlr->work_q = alloc_ordered_workqueue("ctlr_wq_%d", WQ_MEM_RECLAIM,
+					       ctlr->id);
+	if (!ctlr->work_q)
+		goto out_del;
+
+	ctlr->devloss_work_q = alloc_ordered_workqueue("ctlr_dl_wq_%d",
+						       WQ_MEM_RECLAIM,
+						       ctlr->id);
+	if (!ctlr->devloss_work_q)
+		goto out_del_q;
+
+	dev_set_name(&ctlr->dev, "ctlr_%d", ctlr->id);
+	error = device_register(&ctlr->dev);
+	if (error) {
+		destroy_workqueue(ctlr->devloss_work_q);
+		destroy_workqueue(ctlr->work_q);
+		put_device(&ctlr->dev);
+		return NULL;
+	}
+
+	return ctlr;
+
+out_del_q:
+	destroy_workqueue(ctlr->work_q);
+	ctlr->work_q = NULL;
+out_del:
+	kfree(ctlr);
+out:
+	return NULL;
+}
+EXPORT_SYMBOL_GPL(fcoe_ctlr_device_add);
+
+/**
+ * fcoe_ctlr_device_delete() - Delete a FIP ctlr and its subtree from sysfs
+ * @ctlr: A pointer to the ctlr to be deleted
+ *
+ * Deletes a FIP ctlr and any fcfs attached
+ * to it. Deleting fcfs will cause their childen
+ * to be deleted as well.
+ *
+ * The ctlr is detached from sysfs and it's resources
+ * are freed (work q), but the memory is not freed
+ * until its last reference is released.
+ *
+ * This routine expects no locks to be held before
+ * calling.
+ *
+ * TODO: Currently there are no callbacks to clean up LLD data
+ * for a fcoe_fcf_device. LLDs must keep this in mind as they need
+ * to clean up each of their LLD data for all fcoe_fcf_device before
+ * calling fcoe_ctlr_device_delete.
+ */
+void fcoe_ctlr_device_delete(struct fcoe_ctlr_device *ctlr)
+{
+	struct fcoe_fcf_device *fcf, *next;
+	/* Remove any attached fcfs */
+	mutex_lock(&ctlr->lock);
+	list_for_each_entry_safe(fcf, next,
+				 &ctlr->fcfs, peers) {
+		list_del(&fcf->peers);
+		fcf->state = FCOE_FCF_STATE_DELETED;
+		fcoe_ctlr_device_queue_work(ctlr, &fcf->delete_work);
+	}
+	mutex_unlock(&ctlr->lock);
+
+	fcoe_ctlr_device_flush_work(ctlr);
+
+	destroy_workqueue(ctlr->devloss_work_q);
+	ctlr->devloss_work_q = NULL;
+	destroy_workqueue(ctlr->work_q);
+	ctlr->work_q = NULL;
+
+	device_unregister(&ctlr->dev);
+}
+EXPORT_SYMBOL_GPL(fcoe_ctlr_device_delete);
+
+/**
+ * fcoe_fcf_device_final_delete() - Final delete routine
+ * @work: The FIP fcf's embedded work struct
+ *
+ * It is expected that the fcf has been removed from
+ * the FIP ctlr's list before calling this routine.
+ */
+static void fcoe_fcf_device_final_delete(struct work_struct *work)
+{
+	struct fcoe_fcf_device *fcf =
+		container_of(work, struct fcoe_fcf_device, delete_work);
+	struct fcoe_ctlr_device *ctlr = fcoe_fcf_dev_to_ctlr_dev(fcf);
+
+	/*
+	 * Cancel any outstanding timers. These should really exist
+	 * only when rmmod'ing the LLDD and we're asking for
+	 * immediate termination of the rports
+	 */
+	if (!cancel_delayed_work(&fcf->dev_loss_work))
+		fcoe_ctlr_device_flush_devloss(ctlr);
+
+	device_unregister(&fcf->dev);
+}
+
+/**
+ * fip_timeout_deleted_fcf() - Delete a fcf when the devloss timer fires
+ * @work: The FIP fcf's embedded work struct
+ *
+ * Removes the fcf from the FIP ctlr's list of fcfs and
+ * queues the final deletion.
+ */
+static void fip_timeout_deleted_fcf(struct work_struct *work)
+{
+	struct fcoe_fcf_device *fcf =
+		container_of(work, struct fcoe_fcf_device, dev_loss_work.work);
+	struct fcoe_ctlr_device *ctlr = fcoe_fcf_dev_to_ctlr_dev(fcf);
+
+	mutex_lock(&ctlr->lock);
+
+	/*
+	 * If the fcf is deleted or reconnected before the timer
+	 * fires the devloss queue will be flushed, but the state will
+	 * either be CONNECTED or DELETED. If that is the case we
+	 * cancel deleting the fcf.
+	 */
+	if (fcf->state != FCOE_FCF_STATE_DISCONNECTED)
+		goto out;
+
+	dev_printk(KERN_ERR, &fcf->dev,
+		   "FIP fcf connection time out: removing fcf\n");
+
+	list_del(&fcf->peers);
+	fcf->state = FCOE_FCF_STATE_DELETED;
+	fcoe_ctlr_device_queue_work(ctlr, &fcf->delete_work);
+
+out:
+	mutex_unlock(&ctlr->lock);
+}
+
+/**
+ * fcoe_fcf_device_delete() - Delete a FIP fcf
+ * @fcf: Pointer to the fcf which is to be deleted
+ *
+ * Queues the FIP fcf on the devloss workqueue
+ *
+ * Expects the ctlr_attrs mutex to be held for fcf
+ * state change.
+ */
+void fcoe_fcf_device_delete(struct fcoe_fcf_device *fcf)
+{
+	struct fcoe_ctlr_device *ctlr = fcoe_fcf_dev_to_ctlr_dev(fcf);
+	int timeout = fcf->dev_loss_tmo;
+
+	if (fcf->state != FCOE_FCF_STATE_CONNECTED)
+		return;
+
+	fcf->state = FCOE_FCF_STATE_DISCONNECTED;
+
+	/*
+	 * FCF will only be re-connected by the LLD calling
+	 * fcoe_fcf_device_add, and it should be setting up
+	 * priv then.
+	 */
+	fcf->priv = NULL;
+
+	fcoe_ctlr_device_queue_devloss_work(ctlr, &fcf->dev_loss_work,
+					   timeout * HZ);
+}
+EXPORT_SYMBOL_GPL(fcoe_fcf_device_delete);
+
+/**
+ * fcoe_fcf_device_add() - Add a FCoE sysfs fcoe_fcf_device to the system
+ * @ctlr:    The fcoe_ctlr_device that will be the fcoe_fcf_device parent
+ * @new_fcf: A temporary FCF used for lookups on the current list of fcfs
+ *
+ * Expects to be called with the ctlr->lock held
+ */
+struct fcoe_fcf_device *fcoe_fcf_device_add(struct fcoe_ctlr_device *ctlr,
+					    struct fcoe_fcf_device *new_fcf)
+{
+	struct fcoe_fcf_device *fcf;
+	int error = 0;
+
+	list_for_each_entry(fcf, &ctlr->fcfs, peers) {
+		if (fcoe_fcf_device_match(new_fcf, fcf)) {
+			if (fcf->state == FCOE_FCF_STATE_CONNECTED)
+				return fcf;
+
+			fcf->state = FCOE_FCF_STATE_CONNECTED;
+
+			if (!cancel_delayed_work(&fcf->dev_loss_work))
+				fcoe_ctlr_device_flush_devloss(ctlr);
+
+			return fcf;
+		}
+	}
+
+	fcf = kzalloc_obj(struct fcoe_fcf_device, GFP_ATOMIC);
+	if (unlikely(!fcf))
+		goto out;
+
+	INIT_WORK(&fcf->delete_work, fcoe_fcf_device_final_delete);
+	INIT_DELAYED_WORK(&fcf->dev_loss_work, fip_timeout_deleted_fcf);
+
+	fcf->dev.parent = &ctlr->dev;
+	fcf->dev.bus = &fcoe_bus_type;
+	fcf->dev.type = &fcoe_fcf_device_type;
+	fcf->id = atomic_inc_return(&fcf_num) - 1;
+	fcf->state = FCOE_FCF_STATE_UNKNOWN;
+
+	fcf->dev_loss_tmo = ctlr->fcf_dev_loss_tmo;
+
+	dev_set_name(&fcf->dev, "fcf_%d", fcf->id);
+
+	fcf->fabric_name = new_fcf->fabric_name;
+	fcf->switch_name = new_fcf->switch_name;
+	fcf->fc_map = new_fcf->fc_map;
+	fcf->vfid = new_fcf->vfid;
+	memcpy(fcf->mac, new_fcf->mac, ETH_ALEN);
+	fcf->priority = new_fcf->priority;
+	fcf->fka_period = new_fcf->fka_period;
+	fcf->selected = new_fcf->selected;
+
+	error = device_register(&fcf->dev);
+	if (error) {
+		put_device(&fcf->dev);
+		goto out;
+	}
+
+	fcf->state = FCOE_FCF_STATE_CONNECTED;
+	list_add_tail(&fcf->peers, &ctlr->fcfs);
+
+	return fcf;
+
+out:
+	return NULL;
+}
+EXPORT_SYMBOL_GPL(fcoe_fcf_device_add);
+
+int __init fcoe_sysfs_setup(void)
+{
+	atomic_set(&ctlr_num, 0);
+	atomic_set(&fcf_num, 0);
+
+	return bus_register(&fcoe_bus_type);
+}
+
+void __exit fcoe_sysfs_teardown(void)
+{
+	bus_unregister(&fcoe_bus_type);
+}
diff --git a/drivers/scsi/fcoe/fcoe_transport.c b/drivers/scsi/fcoe/fcoe_transport.c
new file mode 100644
index 000000000..2bbb9a38e
--- /dev/null
+++ b/drivers/scsi/fcoe/fcoe_transport.c
@@ -0,0 +1,1059 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * Maintained at www.Open-FCoE.org
+ */
+
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/netdevice.h>
+#include <linux/ethtool.h>
+#include <linux/errno.h>
+#include <linux/crc32.h>
+#include <scsi/libfcoe.h>
+
+#include "libfcoe.h"
+
+MODULE_AUTHOR("Open-FCoE.org");
+MODULE_DESCRIPTION("FIP discovery protocol and FCoE transport for FCoE HBAs");
+MODULE_LICENSE("GPL v2");
+
+static int fcoe_transport_create(const char *, const struct kernel_param *);
+static int fcoe_transport_destroy(const char *, const struct kernel_param *);
+static int fcoe_transport_show(char *buffer, const struct kernel_param *kp);
+static struct fcoe_transport *fcoe_transport_lookup(struct net_device *device);
+static struct fcoe_transport *fcoe_netdev_map_lookup(struct net_device *device);
+static int fcoe_transport_enable(const char *, const struct kernel_param *);
+static int fcoe_transport_disable(const char *, const struct kernel_param *);
+static int libfcoe_device_notification(struct notifier_block *notifier,
+				    ulong event, void *ptr);
+
+static LIST_HEAD(fcoe_transports);
+static DEFINE_MUTEX(ft_mutex);
+static LIST_HEAD(fcoe_netdevs);
+static DEFINE_MUTEX(fn_mutex);
+
+unsigned int libfcoe_debug_logging;
+module_param_named(debug_logging, libfcoe_debug_logging, int, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(debug_logging, "a bit mask of logging levels");
+
+module_param_call(show, NULL, fcoe_transport_show, NULL, S_IRUSR);
+__MODULE_PARM_TYPE(show, "string");
+MODULE_PARM_DESC(show, " Show attached FCoE transports");
+
+module_param_call(create, fcoe_transport_create, NULL,
+		  (void *)FIP_MODE_FABRIC, S_IWUSR);
+__MODULE_PARM_TYPE(create, "string");
+MODULE_PARM_DESC(create, " Creates fcoe instance on an ethernet interface");
+
+module_param_call(create_vn2vn, fcoe_transport_create, NULL,
+		  (void *)FIP_MODE_VN2VN, S_IWUSR);
+__MODULE_PARM_TYPE(create_vn2vn, "string");
+MODULE_PARM_DESC(create_vn2vn, " Creates a VN_node to VN_node FCoE instance "
+		 "on an Ethernet interface");
+
+module_param_call(destroy, fcoe_transport_destroy, NULL, NULL, S_IWUSR);
+__MODULE_PARM_TYPE(destroy, "string");
+MODULE_PARM_DESC(destroy, " Destroys fcoe instance on an ethernet interface");
+
+module_param_call(enable, fcoe_transport_enable, NULL, NULL, S_IWUSR);
+__MODULE_PARM_TYPE(enable, "string");
+MODULE_PARM_DESC(enable, " Enables fcoe on an ethernet interface.");
+
+module_param_call(disable, fcoe_transport_disable, NULL, NULL, S_IWUSR);
+__MODULE_PARM_TYPE(disable, "string");
+MODULE_PARM_DESC(disable, " Disables fcoe on an ethernet interface.");
+
+/* notification function for packets from net device */
+static struct notifier_block libfcoe_notifier = {
+	.notifier_call = libfcoe_device_notification,
+};
+
+static const struct {
+	u32 fc_port_speed;
+#define SPEED_2000	2000
+#define SPEED_4000	4000
+#define SPEED_8000	8000
+#define SPEED_16000	16000
+#define SPEED_32000	32000
+	u32 eth_port_speed;
+} fcoe_port_speed_mapping[] = {
+	{ FC_PORTSPEED_1GBIT,   SPEED_1000   },
+	{ FC_PORTSPEED_2GBIT,   SPEED_2000   },
+	{ FC_PORTSPEED_4GBIT,   SPEED_4000   },
+	{ FC_PORTSPEED_8GBIT,   SPEED_8000   },
+	{ FC_PORTSPEED_10GBIT,  SPEED_10000  },
+	{ FC_PORTSPEED_16GBIT,  SPEED_16000  },
+	{ FC_PORTSPEED_20GBIT,  SPEED_20000  },
+	{ FC_PORTSPEED_25GBIT,  SPEED_25000  },
+	{ FC_PORTSPEED_32GBIT,  SPEED_32000  },
+	{ FC_PORTSPEED_40GBIT,  SPEED_40000  },
+	{ FC_PORTSPEED_50GBIT,  SPEED_50000  },
+	{ FC_PORTSPEED_100GBIT, SPEED_100000 },
+};
+
+static inline u32 eth2fc_speed(u32 eth_port_speed)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(fcoe_port_speed_mapping); i++) {
+		if (fcoe_port_speed_mapping[i].eth_port_speed == eth_port_speed)
+			return fcoe_port_speed_mapping[i].fc_port_speed;
+	}
+
+	return FC_PORTSPEED_UNKNOWN;
+}
+
+/**
+ * fcoe_link_speed_update() - Update the supported and actual link speeds
+ * @lport: The local port to update speeds for
+ *
+ * Caller must hold the netdev's ops lock.
+ *
+ * Returns: 0 if the ethtool query was successful
+ *          -1 if the ethtool query failed
+ */
+int fcoe_link_speed_update(struct fc_lport *lport)
+{
+	struct net_device *netdev = fcoe_get_netdev(lport);
+	struct ethtool_link_ksettings ecmd;
+
+	if (!netif_get_link_ksettings(netdev, &ecmd)) {
+		lport->link_supported_speeds &= ~(FC_PORTSPEED_1GBIT  |
+		                                  FC_PORTSPEED_10GBIT |
+		                                  FC_PORTSPEED_20GBIT |
+		                                  FC_PORTSPEED_40GBIT);
+
+		if (ecmd.link_modes.supported[0] & (
+			    SUPPORTED_1000baseT_Half |
+			    SUPPORTED_1000baseT_Full |
+			    SUPPORTED_1000baseKX_Full))
+			lport->link_supported_speeds |= FC_PORTSPEED_1GBIT;
+
+		if (ecmd.link_modes.supported[0] & (
+			    SUPPORTED_10000baseT_Full   |
+			    SUPPORTED_10000baseKX4_Full |
+			    SUPPORTED_10000baseKR_Full  |
+			    SUPPORTED_10000baseR_FEC))
+			lport->link_supported_speeds |= FC_PORTSPEED_10GBIT;
+
+		if (ecmd.link_modes.supported[0] & (
+			    SUPPORTED_20000baseMLD2_Full |
+			    SUPPORTED_20000baseKR2_Full))
+			lport->link_supported_speeds |= FC_PORTSPEED_20GBIT;
+
+		if (ecmd.link_modes.supported[0] & (
+			    SUPPORTED_40000baseKR4_Full |
+			    SUPPORTED_40000baseCR4_Full |
+			    SUPPORTED_40000baseSR4_Full |
+			    SUPPORTED_40000baseLR4_Full))
+			lport->link_supported_speeds |= FC_PORTSPEED_40GBIT;
+
+		lport->link_speed = eth2fc_speed(ecmd.base.speed);
+		return 0;
+	}
+	return -1;
+}
+EXPORT_SYMBOL_GPL(fcoe_link_speed_update);
+
+/**
+ * __fcoe_get_lesb() - Get the Link Error Status Block (LESB) for a given lport
+ * @lport: The local port to update speeds for
+ * @fc_lesb: Pointer to the LESB to be filled up
+ * @netdev: Pointer to the netdev that is associated with the lport
+ *
+ * Note, the Link Error Status Block (LESB) for FCoE is defined in FC-BB-6
+ * Clause 7.11 in v1.04.
+ */
+void __fcoe_get_lesb(struct fc_lport *lport,
+		     struct fc_els_lesb *fc_lesb,
+		     struct net_device *netdev)
+{
+	unsigned int cpu;
+	u32 lfc, vlfc, mdac;
+	struct fc_stats *stats;
+	struct fcoe_fc_els_lesb *lesb;
+	struct rtnl_link_stats64 temp;
+
+	lfc = 0;
+	vlfc = 0;
+	mdac = 0;
+	lesb = (struct fcoe_fc_els_lesb *)fc_lesb;
+	memset(lesb, 0, sizeof(*lesb));
+	for_each_possible_cpu(cpu) {
+		stats = per_cpu_ptr(lport->stats, cpu);
+		lfc += READ_ONCE(stats->LinkFailureCount);
+		vlfc += READ_ONCE(stats->VLinkFailureCount);
+		mdac += READ_ONCE(stats->MissDiscAdvCount);
+	}
+	lesb->lesb_link_fail = htonl(lfc);
+	lesb->lesb_vlink_fail = htonl(vlfc);
+	lesb->lesb_miss_fka = htonl(mdac);
+	lesb->lesb_fcs_error =
+			htonl(dev_get_stats(netdev, &temp)->rx_crc_errors);
+}
+EXPORT_SYMBOL_GPL(__fcoe_get_lesb);
+
+/**
+ * fcoe_get_lesb() - Fill the FCoE Link Error Status Block
+ * @lport: the local port
+ * @fc_lesb: the link error status block
+ */
+void fcoe_get_lesb(struct fc_lport *lport,
+			 struct fc_els_lesb *fc_lesb)
+{
+	struct net_device *netdev = fcoe_get_netdev(lport);
+
+	__fcoe_get_lesb(lport, fc_lesb, netdev);
+}
+EXPORT_SYMBOL_GPL(fcoe_get_lesb);
+
+/**
+ * fcoe_ctlr_get_lesb() - Get the Link Error Status Block (LESB) for a given
+ * fcoe controller device
+ * @ctlr_dev: The given fcoe controller device
+ *
+ */
+void fcoe_ctlr_get_lesb(struct fcoe_ctlr_device *ctlr_dev)
+{
+	struct fcoe_ctlr *fip = fcoe_ctlr_device_priv(ctlr_dev);
+	struct net_device *netdev = fcoe_get_netdev(fip->lp);
+	struct fc_els_lesb *fc_lesb;
+
+	fc_lesb = (struct fc_els_lesb *)(&ctlr_dev->lesb);
+	__fcoe_get_lesb(fip->lp, fc_lesb, netdev);
+}
+EXPORT_SYMBOL_GPL(fcoe_ctlr_get_lesb);
+
+void fcoe_wwn_to_str(u64 wwn, char *buf, int len)
+{
+	u8 wwpn[8];
+
+	u64_to_wwn(wwn, wwpn);
+	snprintf(buf, len, "%02x%02x%02x%02x%02x%02x%02x%02x",
+		 wwpn[0], wwpn[1], wwpn[2], wwpn[3],
+		 wwpn[4], wwpn[5], wwpn[6], wwpn[7]);
+}
+EXPORT_SYMBOL_GPL(fcoe_wwn_to_str);
+
+/**
+ * fcoe_validate_vport_create() - Validate a vport before creating it
+ * @vport: NPIV port to be created
+ *
+ * This routine is meant to add validation for a vport before creating it
+ * via fcoe_vport_create().
+ * Current validations are:
+ *      - WWPN supplied is unique for given lport
+ */
+int fcoe_validate_vport_create(struct fc_vport *vport)
+{
+	struct Scsi_Host *shost = vport_to_shost(vport);
+	struct fc_lport *n_port = shost_priv(shost);
+	struct fc_lport *vn_port;
+	int rc = 0;
+	char buf[32];
+
+	mutex_lock(&n_port->lp_mutex);
+
+	fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
+	/* Check if the wwpn is not same as that of the lport */
+	if (!memcmp(&n_port->wwpn, &vport->port_name, sizeof(u64))) {
+		LIBFCOE_TRANSPORT_DBG("vport WWPN 0x%s is same as that of the "
+				      "base port WWPN\n", buf);
+		rc = -EINVAL;
+		goto out;
+	}
+
+	/* Check if there is any existing vport with same wwpn */
+	list_for_each_entry(vn_port, &n_port->vports, list) {
+		if (!memcmp(&vn_port->wwpn, &vport->port_name, sizeof(u64))) {
+			LIBFCOE_TRANSPORT_DBG("vport with given WWPN 0x%s "
+					      "already exists\n", buf);
+			rc = -EINVAL;
+			break;
+		}
+	}
+out:
+	mutex_unlock(&n_port->lp_mutex);
+	return rc;
+}
+EXPORT_SYMBOL_GPL(fcoe_validate_vport_create);
+
+/**
+ * fcoe_get_wwn() - Get the world wide name from LLD if it supports it
+ * @netdev: the associated net device
+ * @wwn: the output WWN
+ * @type: the type of WWN (WWPN or WWNN)
+ *
+ * Returns: 0 for success
+ */
+int fcoe_get_wwn(struct net_device *netdev, u64 *wwn, int type)
+{
+	const struct net_device_ops *ops = netdev->netdev_ops;
+
+	if (ops->ndo_fcoe_get_wwn)
+		return ops->ndo_fcoe_get_wwn(netdev, wwn, type);
+	return -EINVAL;
+}
+EXPORT_SYMBOL_GPL(fcoe_get_wwn);
+
+/**
+ * fcoe_fc_crc() - Calculates the CRC for a given frame
+ * @fp: The frame to be checksumed
+ *
+ * This uses crc32() routine to calculate the CRC for a frame
+ *
+ * Return: The 32 bit CRC value
+ */
+u32 fcoe_fc_crc(struct fc_frame *fp)
+{
+	struct sk_buff *skb = fp_skb(fp);
+	skb_frag_t *frag;
+	unsigned char *data;
+	unsigned long off, len, clen;
+	u32 crc;
+	unsigned i;
+
+	crc = crc32(~0, skb->data, skb_headlen(skb));
+
+	for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
+		frag = &skb_shinfo(skb)->frags[i];
+		off = skb_frag_off(frag);
+		len = skb_frag_size(frag);
+		while (len > 0) {
+			clen = min(len, PAGE_SIZE - (off & ~PAGE_MASK));
+			data = kmap_atomic(
+				skb_frag_page(frag) + (off >> PAGE_SHIFT));
+			crc = crc32(crc, data + (off & ~PAGE_MASK), clen);
+			kunmap_atomic(data);
+			off += clen;
+			len -= clen;
+		}
+	}
+	return crc;
+}
+EXPORT_SYMBOL_GPL(fcoe_fc_crc);
+
+/**
+ * fcoe_start_io() - Start FCoE I/O
+ * @skb: The packet to be transmitted
+ *
+ * This routine is called from the net device to start transmitting
+ * FCoE packets.
+ *
+ * Returns: 0 for success
+ */
+int fcoe_start_io(struct sk_buff *skb)
+{
+	struct sk_buff *nskb;
+	int rc;
+
+	nskb = skb_clone(skb, GFP_ATOMIC);
+	if (!nskb)
+		return -ENOMEM;
+	rc = dev_queue_xmit(nskb);
+	if (rc != 0)
+		return rc;
+	kfree_skb(skb);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(fcoe_start_io);
+
+
+/**
+ * fcoe_clean_pending_queue() - Dequeue a skb and free it
+ * @lport: The local port to dequeue a skb on
+ */
+void fcoe_clean_pending_queue(struct fc_lport *lport)
+{
+	struct fcoe_port  *port = lport_priv(lport);
+	struct sk_buff *skb;
+
+	spin_lock_bh(&port->fcoe_pending_queue.lock);
+	while ((skb = __skb_dequeue(&port->fcoe_pending_queue)) != NULL) {
+		spin_unlock_bh(&port->fcoe_pending_queue.lock);
+		kfree_skb(skb);
+		spin_lock_bh(&port->fcoe_pending_queue.lock);
+	}
+	spin_unlock_bh(&port->fcoe_pending_queue.lock);
+}
+EXPORT_SYMBOL_GPL(fcoe_clean_pending_queue);
+
+/**
+ * fcoe_check_wait_queue() - Attempt to clear the transmit backlog
+ * @lport: The local port whose backlog is to be cleared
+ * @skb: The received FIP packet
+ *
+ * This empties the wait_queue, dequeues the head of the wait_queue queue
+ * and calls fcoe_start_io() for each packet. If all skb have been
+ * transmitted it returns the qlen. If an error occurs it restores
+ * wait_queue (to try again later) and returns -1.
+ *
+ * The wait_queue is used when the skb transmit fails. The failed skb
+ * will go in the wait_queue which will be emptied by the timer function or
+ * by the next skb transmit.
+ */
+void fcoe_check_wait_queue(struct fc_lport *lport, struct sk_buff *skb)
+{
+	struct fcoe_port *port = lport_priv(lport);
+	int rc;
+
+	spin_lock_bh(&port->fcoe_pending_queue.lock);
+
+	if (skb)
+		__skb_queue_tail(&port->fcoe_pending_queue, skb);
+
+	if (port->fcoe_pending_queue_active)
+		goto out;
+	port->fcoe_pending_queue_active = 1;
+
+	while (port->fcoe_pending_queue.qlen) {
+		/* keep qlen > 0 until fcoe_start_io succeeds */
+		port->fcoe_pending_queue.qlen++;
+		skb = __skb_dequeue(&port->fcoe_pending_queue);
+
+		spin_unlock_bh(&port->fcoe_pending_queue.lock);
+		rc = fcoe_start_io(skb);
+		spin_lock_bh(&port->fcoe_pending_queue.lock);
+
+		if (rc) {
+			__skb_queue_head(&port->fcoe_pending_queue, skb);
+			/* undo temporary increment above */
+			port->fcoe_pending_queue.qlen--;
+			break;
+		}
+		/* undo temporary increment above */
+		port->fcoe_pending_queue.qlen--;
+	}
+
+	if (port->fcoe_pending_queue.qlen < port->min_queue_depth)
+		lport->qfull = 0;
+	if (port->fcoe_pending_queue.qlen && !timer_pending(&port->timer))
+		mod_timer(&port->timer, jiffies + 2);
+	port->fcoe_pending_queue_active = 0;
+out:
+	if (port->fcoe_pending_queue.qlen > port->max_queue_depth)
+		lport->qfull = 1;
+	spin_unlock_bh(&port->fcoe_pending_queue.lock);
+}
+EXPORT_SYMBOL_GPL(fcoe_check_wait_queue);
+
+/**
+ * fcoe_queue_timer() - The fcoe queue timer
+ * @t: Timer context use to obtain the FCoE port
+ *
+ * Calls fcoe_check_wait_queue on timeout
+ */
+void fcoe_queue_timer(struct timer_list *t)
+{
+	struct fcoe_port *port = timer_container_of(port, t, timer);
+
+	fcoe_check_wait_queue(port->lport, NULL);
+}
+EXPORT_SYMBOL_GPL(fcoe_queue_timer);
+
+/**
+ * fcoe_get_paged_crc_eof() - Allocate a page to be used for the trailer CRC
+ * @skb:  The packet to be transmitted
+ * @tlen: The total length of the trailer
+ * @fps:  The fcoe context
+ *
+ * This routine allocates a page for frame trailers. The page is re-used if
+ * there is enough room left on it for the current trailer. If there isn't
+ * enough buffer left a new page is allocated for the trailer. Reference to
+ * the page from this function as well as the skbs using the page fragments
+ * ensure that the page is freed at the appropriate time.
+ *
+ * Returns: 0 for success
+ */
+int fcoe_get_paged_crc_eof(struct sk_buff *skb, int tlen,
+			   struct fcoe_percpu_s *fps)
+{
+	struct page *page;
+
+	page = fps->crc_eof_page;
+	if (!page) {
+		page = alloc_page(GFP_ATOMIC);
+		if (!page)
+			return -ENOMEM;
+
+		fps->crc_eof_page = page;
+		fps->crc_eof_offset = 0;
+	}
+
+	get_page(page);
+	skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags, page,
+			   fps->crc_eof_offset, tlen);
+	skb->len += tlen;
+	skb->data_len += tlen;
+	skb->truesize += tlen;
+	fps->crc_eof_offset += sizeof(struct fcoe_crc_eof);
+
+	if (fps->crc_eof_offset >= PAGE_SIZE) {
+		fps->crc_eof_page = NULL;
+		fps->crc_eof_offset = 0;
+		put_page(page);
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(fcoe_get_paged_crc_eof);
+
+/**
+ * fcoe_transport_lookup - find an fcoe transport that matches a netdev
+ * @netdev: The netdev to look for from all attached transports
+ *
+ * Returns : ptr to the fcoe transport that supports this netdev or NULL
+ * if not found.
+ *
+ * The ft_mutex should be held when this is called
+ */
+static struct fcoe_transport *fcoe_transport_lookup(struct net_device *netdev)
+{
+	struct fcoe_transport *ft = NULL;
+
+	list_for_each_entry(ft, &fcoe_transports, list)
+		if (ft->match && ft->match(netdev))
+			return ft;
+	return NULL;
+}
+
+/**
+ * fcoe_transport_attach - Attaches an FCoE transport
+ * @ft: The fcoe transport to be attached
+ *
+ * Returns : 0 for success
+ */
+int fcoe_transport_attach(struct fcoe_transport *ft)
+{
+	int rc = 0;
+
+	mutex_lock(&ft_mutex);
+	if (ft->attached) {
+		LIBFCOE_TRANSPORT_DBG("transport %s already attached\n",
+				       ft->name);
+		rc = -EEXIST;
+		goto out_attach;
+	}
+
+	/* Add default transport to the tail */
+	if (strcmp(ft->name, FCOE_TRANSPORT_DEFAULT))
+		list_add(&ft->list, &fcoe_transports);
+	else
+		list_add_tail(&ft->list, &fcoe_transports);
+
+	ft->attached = true;
+	LIBFCOE_TRANSPORT_DBG("attaching transport %s\n", ft->name);
+
+out_attach:
+	mutex_unlock(&ft_mutex);
+	return rc;
+}
+EXPORT_SYMBOL(fcoe_transport_attach);
+
+/**
+ * fcoe_transport_detach - Detaches an FCoE transport
+ * @ft: The fcoe transport to be attached
+ *
+ * Returns : 0 for success
+ */
+int fcoe_transport_detach(struct fcoe_transport *ft)
+{
+	int rc = 0;
+	struct fcoe_netdev_mapping *nm = NULL, *tmp;
+
+	mutex_lock(&ft_mutex);
+	if (!ft->attached) {
+		LIBFCOE_TRANSPORT_DBG("transport %s already detached\n",
+			ft->name);
+		rc = -ENODEV;
+		goto out_attach;
+	}
+
+	/* remove netdev mapping for this transport as it is going away */
+	mutex_lock(&fn_mutex);
+	list_for_each_entry_safe(nm, tmp, &fcoe_netdevs, list) {
+		if (nm->ft == ft) {
+			LIBFCOE_TRANSPORT_DBG("transport %s going away, "
+				"remove its netdev mapping for %s\n",
+				ft->name, nm->netdev->name);
+			list_del(&nm->list);
+			kfree(nm);
+		}
+	}
+	mutex_unlock(&fn_mutex);
+
+	list_del(&ft->list);
+	ft->attached = false;
+	LIBFCOE_TRANSPORT_DBG("detaching transport %s\n", ft->name);
+
+out_attach:
+	mutex_unlock(&ft_mutex);
+	return rc;
+
+}
+EXPORT_SYMBOL(fcoe_transport_detach);
+
+static int fcoe_transport_show(char *buffer, const struct kernel_param *kp)
+{
+	int i, j;
+	struct fcoe_transport *ft = NULL;
+
+	i = j = sprintf(buffer, "Attached FCoE transports:");
+	mutex_lock(&ft_mutex);
+	list_for_each_entry(ft, &fcoe_transports, list) {
+		if (i >= PAGE_SIZE - IFNAMSIZ)
+			break;
+		i += snprintf(&buffer[i], IFNAMSIZ, "%s ", ft->name);
+	}
+	mutex_unlock(&ft_mutex);
+	if (i == j)
+		i += snprintf(&buffer[i], IFNAMSIZ, "none");
+	return i;
+}
+
+static int __init fcoe_transport_init(void)
+{
+	register_netdevice_notifier(&libfcoe_notifier);
+	return 0;
+}
+
+static int fcoe_transport_exit(void)
+{
+	struct fcoe_transport *ft;
+
+	unregister_netdevice_notifier(&libfcoe_notifier);
+	mutex_lock(&ft_mutex);
+	list_for_each_entry(ft, &fcoe_transports, list)
+		printk(KERN_ERR "FCoE transport %s is still attached!\n",
+		      ft->name);
+	mutex_unlock(&ft_mutex);
+	return 0;
+}
+
+
+static int fcoe_add_netdev_mapping(struct net_device *netdev,
+					struct fcoe_transport *ft)
+{
+	struct fcoe_netdev_mapping *nm;
+
+	nm = kmalloc_obj(*nm);
+	if (!nm) {
+		printk(KERN_ERR "Unable to allocate netdev_mapping");
+		return -ENOMEM;
+	}
+
+	nm->netdev = netdev;
+	nm->ft = ft;
+
+	mutex_lock(&fn_mutex);
+	list_add(&nm->list, &fcoe_netdevs);
+	mutex_unlock(&fn_mutex);
+	return 0;
+}
+
+
+static void fcoe_del_netdev_mapping(struct net_device *netdev)
+{
+	struct fcoe_netdev_mapping *nm = NULL, *tmp;
+
+	mutex_lock(&fn_mutex);
+	list_for_each_entry_safe(nm, tmp, &fcoe_netdevs, list) {
+		if (nm->netdev == netdev) {
+			list_del(&nm->list);
+			kfree(nm);
+			mutex_unlock(&fn_mutex);
+			return;
+		}
+	}
+	mutex_unlock(&fn_mutex);
+}
+
+
+/**
+ * fcoe_netdev_map_lookup - find the fcoe transport that matches the netdev on which
+ * it was created
+ * @netdev: The net device that the FCoE interface is on
+ *
+ * Returns : ptr to the fcoe transport that supports this netdev or NULL
+ * if not found.
+ *
+ * The ft_mutex should be held when this is called
+ */
+static struct fcoe_transport *fcoe_netdev_map_lookup(struct net_device *netdev)
+{
+	struct fcoe_transport *ft = NULL;
+	struct fcoe_netdev_mapping *nm;
+
+	mutex_lock(&fn_mutex);
+	list_for_each_entry(nm, &fcoe_netdevs, list) {
+		if (netdev == nm->netdev) {
+			ft = nm->ft;
+			mutex_unlock(&fn_mutex);
+			return ft;
+		}
+	}
+
+	mutex_unlock(&fn_mutex);
+	return NULL;
+}
+
+/**
+ * fcoe_if_to_netdev() - Parse a name buffer to get a net device
+ * @buffer: The name of the net device
+ *
+ * Returns: NULL or a ptr to net_device
+ */
+static struct net_device *fcoe_if_to_netdev(const char *buffer)
+{
+	char *cp;
+	char ifname[IFNAMSIZ + 2];
+
+	if (buffer) {
+		strscpy(ifname, buffer, IFNAMSIZ);
+		cp = ifname + strlen(ifname);
+		while (--cp >= ifname && *cp == '\n')
+			*cp = '\0';
+		return dev_get_by_name(&init_net, ifname);
+	}
+	return NULL;
+}
+
+/**
+ * libfcoe_device_notification() - Handler for net device events
+ * @notifier: The context of the notification
+ * @event:    The type of event
+ * @ptr:      The net device that the event was on
+ *
+ * This function is called by the Ethernet driver in case of link change event.
+ *
+ * Returns: 0 for success
+ */
+static int libfcoe_device_notification(struct notifier_block *notifier,
+				    ulong event, void *ptr)
+{
+	struct net_device *netdev = netdev_notifier_info_to_dev(ptr);
+
+	switch (event) {
+	case NETDEV_UNREGISTER:
+		LIBFCOE_TRANSPORT_DBG("NETDEV_UNREGISTER %s\n",
+				      netdev->name);
+		fcoe_del_netdev_mapping(netdev);
+		break;
+	}
+	return NOTIFY_OK;
+}
+
+ssize_t fcoe_ctlr_create_store(const char *buf, size_t count)
+{
+	struct net_device *netdev = NULL;
+	struct fcoe_transport *ft = NULL;
+	int rc = 0;
+	int err;
+
+	mutex_lock(&ft_mutex);
+
+	netdev = fcoe_if_to_netdev(buf);
+	if (!netdev) {
+		LIBFCOE_TRANSPORT_DBG("Invalid device %s.\n", buf);
+		rc = -ENODEV;
+		goto out_nodev;
+	}
+
+	ft = fcoe_netdev_map_lookup(netdev);
+	if (ft) {
+		LIBFCOE_TRANSPORT_DBG("transport %s already has existing "
+				      "FCoE instance on %s.\n",
+				      ft->name, netdev->name);
+		rc = -EEXIST;
+		goto out_putdev;
+	}
+
+	ft = fcoe_transport_lookup(netdev);
+	if (!ft) {
+		LIBFCOE_TRANSPORT_DBG("no FCoE transport found for %s.\n",
+				      netdev->name);
+		rc = -ENODEV;
+		goto out_putdev;
+	}
+
+	/* pass to transport create */
+	err = ft->alloc ? ft->alloc(netdev) : -ENODEV;
+	if (err) {
+		fcoe_del_netdev_mapping(netdev);
+		rc = -ENOMEM;
+		goto out_putdev;
+	}
+
+	err = fcoe_add_netdev_mapping(netdev, ft);
+	if (err) {
+		LIBFCOE_TRANSPORT_DBG("failed to add new netdev mapping "
+				      "for FCoE transport %s for %s.\n",
+				      ft->name, netdev->name);
+		rc = -ENODEV;
+		goto out_putdev;
+	}
+
+	LIBFCOE_TRANSPORT_DBG("transport %s succeeded to create fcoe on %s.\n",
+			      ft->name, netdev->name);
+
+out_putdev:
+	dev_put(netdev);
+out_nodev:
+	mutex_unlock(&ft_mutex);
+	if (rc)
+		return rc;
+	return count;
+}
+
+ssize_t fcoe_ctlr_destroy_store(const char *buf, size_t count)
+{
+	int rc = -ENODEV;
+	struct net_device *netdev = NULL;
+	struct fcoe_transport *ft = NULL;
+
+	mutex_lock(&ft_mutex);
+
+	netdev = fcoe_if_to_netdev(buf);
+	if (!netdev) {
+		LIBFCOE_TRANSPORT_DBG("invalid device %s.\n", buf);
+		goto out_nodev;
+	}
+
+	ft = fcoe_netdev_map_lookup(netdev);
+	if (!ft) {
+		LIBFCOE_TRANSPORT_DBG("no FCoE transport found for %s.\n",
+				      netdev->name);
+		goto out_putdev;
+	}
+
+	/* pass to transport destroy */
+	rc = ft->destroy(netdev);
+	if (rc)
+		goto out_putdev;
+
+	fcoe_del_netdev_mapping(netdev);
+	LIBFCOE_TRANSPORT_DBG("transport %s %s to destroy fcoe on %s.\n",
+			      ft->name, (rc) ? "failed" : "succeeded",
+			      netdev->name);
+	rc = count; /* required for successful return */
+out_putdev:
+	dev_put(netdev);
+out_nodev:
+	mutex_unlock(&ft_mutex);
+	return rc;
+}
+
+/**
+ * fcoe_transport_create() - Create a fcoe interface
+ * @buffer: The name of the Ethernet interface to create on
+ * @kp:	    The associated kernel param
+ *
+ * Called from sysfs. This holds the ft_mutex while calling the
+ * registered fcoe transport's create function.
+ *
+ * Returns: 0 for success
+ */
+static int fcoe_transport_create(const char *buffer,
+				 const struct kernel_param *kp)
+{
+	int rc = -ENODEV;
+	struct net_device *netdev = NULL;
+	struct fcoe_transport *ft = NULL;
+	enum fip_mode fip_mode = (enum fip_mode)(uintptr_t)kp->arg;
+
+	mutex_lock(&ft_mutex);
+
+	netdev = fcoe_if_to_netdev(buffer);
+	if (!netdev) {
+		LIBFCOE_TRANSPORT_DBG("Invalid device %s.\n", buffer);
+		goto out_nodev;
+	}
+
+	ft = fcoe_netdev_map_lookup(netdev);
+	if (ft) {
+		LIBFCOE_TRANSPORT_DBG("transport %s already has existing "
+				      "FCoE instance on %s.\n",
+				      ft->name, netdev->name);
+		rc = -EEXIST;
+		goto out_putdev;
+	}
+
+	ft = fcoe_transport_lookup(netdev);
+	if (!ft) {
+		LIBFCOE_TRANSPORT_DBG("no FCoE transport found for %s.\n",
+				      netdev->name);
+		goto out_putdev;
+	}
+
+	rc = fcoe_add_netdev_mapping(netdev, ft);
+	if (rc) {
+		LIBFCOE_TRANSPORT_DBG("failed to add new netdev mapping "
+				      "for FCoE transport %s for %s.\n",
+				      ft->name, netdev->name);
+		goto out_putdev;
+	}
+
+	/* pass to transport create */
+	rc = ft->create ? ft->create(netdev, fip_mode) : -ENODEV;
+	if (rc)
+		fcoe_del_netdev_mapping(netdev);
+
+	LIBFCOE_TRANSPORT_DBG("transport %s %s to create fcoe on %s.\n",
+			      ft->name, (rc) ? "failed" : "succeeded",
+			      netdev->name);
+
+out_putdev:
+	dev_put(netdev);
+out_nodev:
+	mutex_unlock(&ft_mutex);
+	return rc;
+}
+
+/**
+ * fcoe_transport_destroy() - Destroy a FCoE interface
+ * @buffer: The name of the Ethernet interface to be destroyed
+ * @kp:	    The associated kernel parameter
+ *
+ * Called from sysfs. This holds the ft_mutex while calling the
+ * registered fcoe transport's destroy function.
+ *
+ * Returns: 0 for success
+ */
+static int fcoe_transport_destroy(const char *buffer,
+				  const struct kernel_param *kp)
+{
+	int rc = -ENODEV;
+	struct net_device *netdev = NULL;
+	struct fcoe_transport *ft = NULL;
+
+	mutex_lock(&ft_mutex);
+
+	netdev = fcoe_if_to_netdev(buffer);
+	if (!netdev) {
+		LIBFCOE_TRANSPORT_DBG("invalid device %s.\n", buffer);
+		goto out_nodev;
+	}
+
+	ft = fcoe_netdev_map_lookup(netdev);
+	if (!ft) {
+		LIBFCOE_TRANSPORT_DBG("no FCoE transport found for %s.\n",
+				      netdev->name);
+		goto out_putdev;
+	}
+
+	/* pass to transport destroy */
+	rc = ft->destroy ? ft->destroy(netdev) : -ENODEV;
+	fcoe_del_netdev_mapping(netdev);
+	LIBFCOE_TRANSPORT_DBG("transport %s %s to destroy fcoe on %s.\n",
+			      ft->name, (rc) ? "failed" : "succeeded",
+			      netdev->name);
+
+out_putdev:
+	dev_put(netdev);
+out_nodev:
+	mutex_unlock(&ft_mutex);
+	return rc;
+}
+
+/**
+ * fcoe_transport_disable() - Disables a FCoE interface
+ * @buffer: The name of the Ethernet interface to be disabled
+ * @kp:	    The associated kernel parameter
+ *
+ * Called from sysfs.
+ *
+ * Returns: 0 for success
+ */
+static int fcoe_transport_disable(const char *buffer,
+				  const struct kernel_param *kp)
+{
+	int rc = -ENODEV;
+	struct net_device *netdev = NULL;
+	struct fcoe_transport *ft = NULL;
+
+	mutex_lock(&ft_mutex);
+
+	netdev = fcoe_if_to_netdev(buffer);
+	if (!netdev)
+		goto out_nodev;
+
+	ft = fcoe_netdev_map_lookup(netdev);
+	if (!ft)
+		goto out_putdev;
+
+	rc = ft->disable ? ft->disable(netdev) : -ENODEV;
+
+out_putdev:
+	dev_put(netdev);
+out_nodev:
+	mutex_unlock(&ft_mutex);
+	return rc;
+}
+
+/**
+ * fcoe_transport_enable() - Enables a FCoE interface
+ * @buffer: The name of the Ethernet interface to be enabled
+ * @kp:     The associated kernel parameter
+ *
+ * Called from sysfs.
+ *
+ * Returns: 0 for success
+ */
+static int fcoe_transport_enable(const char *buffer,
+				 const struct kernel_param *kp)
+{
+	int rc = -ENODEV;
+	struct net_device *netdev = NULL;
+	struct fcoe_transport *ft = NULL;
+
+	mutex_lock(&ft_mutex);
+
+	netdev = fcoe_if_to_netdev(buffer);
+	if (!netdev)
+		goto out_nodev;
+
+	ft = fcoe_netdev_map_lookup(netdev);
+	if (!ft)
+		goto out_putdev;
+
+	rc = ft->enable ? ft->enable(netdev) : -ENODEV;
+
+out_putdev:
+	dev_put(netdev);
+out_nodev:
+	mutex_unlock(&ft_mutex);
+	return rc;
+}
+
+/**
+ * libfcoe_init() - Initialization routine for libfcoe.ko
+ */
+static int __init libfcoe_init(void)
+{
+	int rc = 0;
+
+	rc = fcoe_transport_init();
+	if (rc)
+		return rc;
+
+	rc = fcoe_sysfs_setup();
+	if (rc)
+		fcoe_transport_exit();
+
+	return rc;
+}
+module_init(libfcoe_init);
+
+/**
+ * libfcoe_exit() - Tear down libfcoe.ko
+ */
+static void __exit libfcoe_exit(void)
+{
+	fcoe_sysfs_teardown();
+	fcoe_transport_exit();
+}
+module_exit(libfcoe_exit);
diff --git a/drivers/scsi/fcoe/libfcoe.h b/drivers/scsi/fcoe/libfcoe.h
new file mode 100644
index 000000000..b8bdfab51
--- /dev/null
+++ b/drivers/scsi/fcoe/libfcoe.h
@@ -0,0 +1,36 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _FCOE_LIBFCOE_H_
+#define _FCOE_LIBFCOE_H_
+
+extern unsigned int libfcoe_debug_logging;
+#define LIBFCOE_LOGGING	          0x01 /* General logging, not categorized */
+#define LIBFCOE_FIP_LOGGING       0x02 /* FIP logging */
+#define LIBFCOE_TRANSPORT_LOGGING 0x04 /* FCoE transport logging */
+#define LIBFCOE_SYSFS_LOGGING     0x08 /* fcoe_sysfs logging */
+
+#define LIBFCOE_CHECK_LOGGING(LEVEL, CMD)		\
+do {							\
+	if (unlikely(libfcoe_debug_logging & LEVEL))	\
+		do {					\
+			CMD;				\
+		} while (0);				\
+} while (0)
+
+#define LIBFCOE_DBG(fmt, args...)					\
+	LIBFCOE_CHECK_LOGGING(LIBFCOE_LOGGING,				\
+			      pr_info("libfcoe: " fmt, ##args);)
+
+#define LIBFCOE_FIP_DBG(fip, fmt, args...)				\
+	LIBFCOE_CHECK_LOGGING(LIBFCOE_FIP_LOGGING,			\
+			      pr_info("host%d: fip: " fmt,		\
+				      (fip)->lp->host->host_no, ##args);)
+
+#define LIBFCOE_TRANSPORT_DBG(fmt, args...)				\
+	LIBFCOE_CHECK_LOGGING(LIBFCOE_TRANSPORT_LOGGING,		\
+			      pr_info("%s: " fmt, __func__, ##args);)
+
+#define LIBFCOE_SYSFS_DBG(cdev, fmt, args...)				\
+	LIBFCOE_CHECK_LOGGING(LIBFCOE_SYSFS_LOGGING,			\
+			      pr_info("ctlr_%d: " fmt, cdev->id, ##args);)
+
+#endif /* _FCOE_LIBFCOE_H_ */