[SCSI] fcoe: renames libfcoe.c to fcoe.c as the only fcoe module file

Renames libfcoe.c to fcoe.c, fcoe.c becomes the only
.c file for fcoe.ko.

Also deleted "$Id: Makefile" from fcoe module Makefle.

Signed-off-by: Vasu Dev <vasu.dev@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

1 files changed, 0 insertions, 1986 deletions

diff --git a/drivers/scsi/fcoe/libfcoe.c b/drivers/scsi/fcoe/libfcoe.c
deleted file mode 100644
index a81a8ec..0000000
--- a/drivers/scsi/fcoe/libfcoe.c
+++ /dev/null
@@ -1,1986 +0,0 @@
-/*
- * Copyright(c) 2007 - 2008 Intel Corporation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Maintained at www.Open-FCoE.org
- */
-
-#include <linux/module.h>
-#include <linux/version.h>
-#include <linux/kernel.h>
-#include <linux/spinlock.h>
-#include <linux/skbuff.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/kthread.h>
-#include <linux/crc32.h>
-#include <linux/cpu.h>
-#include <linux/fs.h>
-#include <linux/sysfs.h>
-#include <linux/ctype.h>
-#include <scsi/scsi_tcq.h>
-#include <scsi/scsicam.h>
-#include <scsi/scsi_transport.h>
-#include <scsi/scsi_transport_fc.h>
-#include <net/rtnetlink.h>
-
-#include <scsi/fc/fc_encaps.h>
-
-#include <scsi/libfc.h>
-#include <scsi/fc_frame.h>
-#include <scsi/libfcoe.h>
-
-static int debug_fcoe;
-
-#define FCOE_MAX_QUEUE_DEPTH  256
-#define FCOE_LOW_QUEUE_DEPTH  32
-
-/* destination address mode */
-#define FCOE_GW_ADDR_MODE	    0x00
-#define FCOE_FCOUI_ADDR_MODE	    0x01
-
-#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		255
-#define FCOE_MAX_FCP_TARGET	256
-
-#define FCOE_MAX_OUTSTANDING_COMMANDS	1024
-
-#define FCOE_MIN_XID		0x0001	/* the min xid supported by fcoe_sw */
-#define FCOE_MAX_XID		0x07ef	/* the max xid supported by fcoe_sw */
-
-MODULE_AUTHOR("Open-FCoE.org");
-MODULE_DESCRIPTION("FCoE");
-MODULE_LICENSE("GPL");
-
-/* fcoe host list */
-LIST_HEAD(fcoe_hostlist);
-DEFINE_RWLOCK(fcoe_hostlist_lock);
-DEFINE_TIMER(fcoe_timer, NULL, 0, 0);
-DEFINE_PER_CPU(struct fcoe_percpu_s, fcoe_percpu);
-
-
-/* Function Prototyes */
-static int fcoe_check_wait_queue(struct fc_lport *);
-static void fcoe_recv_flogi(struct fcoe_softc *, struct fc_frame *, u8 *);
-static int fcoe_device_notification(struct notifier_block *, ulong, void *);
-static void fcoe_dev_setup(void);
-static void fcoe_dev_cleanup(void);
-
-/* notification function from net device */
-static struct notifier_block fcoe_notifier = {
-	.notifier_call = fcoe_device_notification,
-};
-
-static struct scsi_transport_template *scsi_transport_fcoe_sw;
-
-struct fc_function_template fcoe_transport_function = {
-	.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_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,
-};
-
-static struct scsi_host_template fcoe_shost_template = {
-	.module = THIS_MODULE,
-	.name = "FCoE Driver",
-	.proc_name = FCOE_NAME,
-	.queuecommand = fc_queuecommand,
-	.eh_abort_handler = fc_eh_abort,
-	.eh_device_reset_handler = fc_eh_device_reset,
-	.eh_host_reset_handler = fc_eh_host_reset,
-	.slave_alloc = fc_slave_alloc,
-	.change_queue_depth = fc_change_queue_depth,
-	.change_queue_type = fc_change_queue_type,
-	.this_id = -1,
-	.cmd_per_lun = 32,
-	.can_queue = FCOE_MAX_OUTSTANDING_COMMANDS,
-	.use_clustering = ENABLE_CLUSTERING,
-	.sg_tablesize = SG_ALL,
-	.max_sectors = 0xffff,
-};
-
-/**
- * fcoe_lport_config() - sets up the fc_lport
- * @lp: ptr to the fc_lport
- * @shost: ptr to the parent scsi host
- *
- * Returns: 0 for success
- */
-static int fcoe_lport_config(struct fc_lport *lp)
-{
-	lp->link_up = 0;
-	lp->qfull = 0;
-	lp->max_retry_count = 3;
-	lp->e_d_tov = 2 * 1000;	/* FC-FS default */
-	lp->r_a_tov = 2 * 2 * 1000;
-	lp->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
-			      FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
-
-	fc_lport_init_stats(lp);
-
-	/* lport fc_lport related configuration */
-	fc_lport_config(lp);
-
-	/* offload related configuration */
-	lp->crc_offload = 0;
-	lp->seq_offload = 0;
-	lp->lro_enabled = 0;
-	lp->lro_xid = 0;
-	lp->lso_max = 0;
-
-	return 0;
-}
-
-/**
- * fcoe_netdev_config() - Set up netdev for SW FCoE
- * @lp : ptr to the fc_lport
- * @netdev : ptr to the associated netdevice struct
- *
- * Must be called after fcoe_lport_config() as it will use lport mutex
- *
- * Returns : 0 for success
- */
-static int fcoe_netdev_config(struct fc_lport *lp, struct net_device *netdev)
-{
-	u32 mfs;
-	u64 wwnn, wwpn;
-	struct fcoe_softc *fc;
-	u8 flogi_maddr[ETH_ALEN];
-
-	/* Setup lport private data to point to fcoe softc */
-	fc = lport_priv(lp);
-	fc->lp = lp;
-	fc->real_dev = netdev;
-	fc->phys_dev = netdev;
-
-	/* Require support for get_pauseparam ethtool op. */
-	if (netdev->priv_flags & IFF_802_1Q_VLAN)
-		fc->phys_dev = vlan_dev_real_dev(netdev);
-
-	/* Do not support for bonding device */
-	if ((fc->real_dev->priv_flags & IFF_MASTER_ALB) ||
-	    (fc->real_dev->priv_flags & IFF_SLAVE_INACTIVE) ||
-	    (fc->real_dev->priv_flags & IFF_MASTER_8023AD)) {
-		return -EOPNOTSUPP;
-	}
-
-	/*
-	 * 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 = fc->real_dev->mtu - (sizeof(struct fcoe_hdr) +
-				   sizeof(struct fcoe_crc_eof));
-	if (fc_set_mfs(lp, mfs))
-		return -EINVAL;
-
-	if (!fcoe_link_ok(lp))
-		lp->link_up = 1;
-
-	/* offload features support */
-	if (fc->real_dev->features & NETIF_F_SG)
-		lp->sg_supp = 1;
-
-#ifdef NETIF_F_FCOE_CRC
-	if (netdev->features & NETIF_F_FCOE_CRC) {
-		lp->crc_offload = 1;
-		printk(KERN_DEBUG "fcoe:%s supports FCCRC offload\n",
-		       netdev->name);
-	}
-#endif
-#ifdef NETIF_F_FSO
-	if (netdev->features & NETIF_F_FSO) {
-		lp->seq_offload = 1;
-		lp->lso_max = netdev->gso_max_size;
-		printk(KERN_DEBUG "fcoe:%s supports LSO for max len 0x%x\n",
-		       netdev->name, lp->lso_max);
-	}
-#endif
-	if (netdev->fcoe_ddp_xid) {
-		lp->lro_enabled = 1;
-		lp->lro_xid = netdev->fcoe_ddp_xid;
-		printk(KERN_DEBUG "fcoe:%s supports LRO for max xid 0x%x\n",
-		       netdev->name, lp->lro_xid);
-	}
-	skb_queue_head_init(&fc->fcoe_pending_queue);
-	fc->fcoe_pending_queue_active = 0;
-
-	/* setup Source Mac Address */
-	memcpy(fc->ctl_src_addr, fc->real_dev->dev_addr,
-	       fc->real_dev->addr_len);
-
-	wwnn = fcoe_wwn_from_mac(fc->real_dev->dev_addr, 1, 0);
-	fc_set_wwnn(lp, wwnn);
-	/* XXX - 3rd arg needs to be vlan id */
-	wwpn = fcoe_wwn_from_mac(fc->real_dev->dev_addr, 2, 0);
-	fc_set_wwpn(lp, wwpn);
-
-	/*
-	 * Add FCoE MAC address as second unicast MAC address
-	 * or enter promiscuous mode if not capable of listening
-	 * for multiple unicast MACs.
-	 */
-	rtnl_lock();
-	memcpy(flogi_maddr, (u8[6]) FC_FCOE_FLOGI_MAC, ETH_ALEN);
-	dev_unicast_add(fc->real_dev, flogi_maddr, ETH_ALEN);
-	rtnl_unlock();
-
-	/*
-	 * setup the receive function from ethernet driver
-	 * on the ethertype for the given device
-	 */
-	fc->fcoe_packet_type.func = fcoe_rcv;
-	fc->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE);
-	fc->fcoe_packet_type.dev = fc->real_dev;
-	dev_add_pack(&fc->fcoe_packet_type);
-
-	return 0;
-}
-
-/**
- * fcoe_shost_config() - Sets up fc_lport->host
- * @lp : ptr to the fc_lport
- * @shost : ptr to the associated scsi host
- * @dev : device associated to 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 *lp, struct Scsi_Host *shost,
-				struct device *dev)
-{
-	int rc = 0;
-
-	/* lport scsi host config */
-	lp->host = shost;
-
-	lp->host->max_lun = FCOE_MAX_LUN;
-	lp->host->max_id = FCOE_MAX_FCP_TARGET;
-	lp->host->max_channel = 0;
-	lp->host->transportt = scsi_transport_fcoe_sw;
-
-	/* add the new host to the SCSI-ml */
-	rc = scsi_add_host(lp->host, dev);
-	if (rc) {
-		FC_DBG("fcoe_shost_config:error on scsi_add_host\n");
-		return rc;
-	}
-	sprintf(fc_host_symbolic_name(lp->host), "%s v%s over %s",
-		FCOE_NAME, FCOE_VERSION,
-		fcoe_netdev(lp)->name);
-
-	return 0;
-}
-
-/**
- * fcoe_em_config() - allocates em for this lport
- * @lp: the port that em is to allocated for
- *
- * Returns : 0 on success
- */
-static inline int fcoe_em_config(struct fc_lport *lp)
-{
-	BUG_ON(lp->emp);
-
-	lp->emp = fc_exch_mgr_alloc(lp, FC_CLASS_3,
-				    FCOE_MIN_XID, FCOE_MAX_XID);
-	if (!lp->emp)
-		return -ENOMEM;
-
-	return 0;
-}
-
-/**
- * fcoe_if_destroy() - FCoE software HBA tear-down function
- * @netdev: ptr to the associated net_device
- *
- * Returns: 0 if link is OK for use by FCoE.
- */
-static int fcoe_if_destroy(struct net_device *netdev)
-{
-	struct fc_lport *lp = NULL;
-	struct fcoe_softc *fc;
-	u8 flogi_maddr[ETH_ALEN];
-
-	BUG_ON(!netdev);
-
-	printk(KERN_DEBUG "fcoe_if_destroy:interface on %s\n",
-	       netdev->name);
-
-	lp = fcoe_hostlist_lookup(netdev);
-	if (!lp)
-		return -ENODEV;
-
-	fc = lport_priv(lp);
-
-	/* Logout of the fabric */
-	fc_fabric_logoff(lp);
-
-	/* Remove the instance from fcoe's list */
-	fcoe_hostlist_remove(lp);
-
-	/* Don't listen for Ethernet packets anymore */
-	dev_remove_pack(&fc->fcoe_packet_type);
-
-	/* Cleanup the fc_lport */
-	fc_lport_destroy(lp);
-	fc_fcp_destroy(lp);
-
-	/* Detach from the scsi-ml */
-	fc_remove_host(lp->host);
-	scsi_remove_host(lp->host);
-
-	/* There are no more rports or I/O, free the EM */
-	if (lp->emp)
-		fc_exch_mgr_free(lp->emp);
-
-	/* Delete secondary MAC addresses */
-	rtnl_lock();
-	memcpy(flogi_maddr, (u8[6]) FC_FCOE_FLOGI_MAC, ETH_ALEN);
-	dev_unicast_delete(fc->real_dev, flogi_maddr, ETH_ALEN);
-	if (compare_ether_addr(fc->data_src_addr, (u8[6]) { 0 }))
-		dev_unicast_delete(fc->real_dev, fc->data_src_addr, ETH_ALEN);
-	rtnl_unlock();
-
-	/* Free the per-CPU revieve threads */
-	fcoe_percpu_clean(lp);
-
-	/* Free existing skbs */
-	fcoe_clean_pending_queue(lp);
-
-	/* Free memory used by statistical counters */
-	fc_lport_free_stats(lp);
-
-	/* Release the net_device and Scsi_Host */
-	dev_put(fc->real_dev);
-	scsi_host_put(lp->host);
-
-	return 0;
-}
-
-/*
- * fcoe_ddp_setup - calls LLD's ddp_setup through net_device
- * @lp:	the corresponding fc_lport
- * @xid: the exchange id for this ddp transfer
- * @sgl: the scatterlist describing this transfer
- * @sgc: number of sg items
- *
- * Returns : 0 no ddp
- */
-static int fcoe_ddp_setup(struct fc_lport *lp, u16 xid,
-			     struct scatterlist *sgl, unsigned int sgc)
-{
-	struct net_device *n = fcoe_netdev(lp);
-
-	if (n->netdev_ops && n->netdev_ops->ndo_fcoe_ddp_setup)
-		return n->netdev_ops->ndo_fcoe_ddp_setup(n, xid, sgl, sgc);
-
-	return 0;
-}
-
-/*
- * fcoe_ddp_done - calls LLD's ddp_done through net_device
- * @lp:	the corresponding fc_lport
- * @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 *lp, u16 xid)
-{
-	struct net_device *n = fcoe_netdev(lp);
-
-	if (n->netdev_ops && n->netdev_ops->ndo_fcoe_ddp_done)
-		return n->netdev_ops->ndo_fcoe_ddp_done(n, xid);
-	return 0;
-}
-
-static struct libfc_function_template fcoe_libfc_fcn_templ = {
-	.frame_send = fcoe_xmit,
-	.ddp_setup = fcoe_ddp_setup,
-	.ddp_done = fcoe_ddp_done,
-};
-
-/**
- * fcoe_if_create() - this function creates the fcoe interface
- * @netdev: pointer the associated netdevice
- *
- * Creates fc_lport struct and scsi_host for lport, configures lport
- * and starts fabric login.
- *
- * Returns : 0 on success
- */
-static int fcoe_if_create(struct net_device *netdev)
-{
-	int rc;
-	struct fc_lport *lp = NULL;
-	struct fcoe_softc *fc;
-	struct Scsi_Host *shost;
-
-	BUG_ON(!netdev);
-
-	printk(KERN_DEBUG "fcoe_if_create:interface on %s\n",
-	       netdev->name);
-
-	lp = fcoe_hostlist_lookup(netdev);
-	if (lp)
-		return -EEXIST;
-
-	shost = fcoe_host_alloc(&fcoe_shost_template,
-				sizeof(struct fcoe_softc));
-	if (!shost) {
-		FC_DBG("Could not allocate host structure\n");
-		return -ENOMEM;
-	}
-	lp = shost_priv(shost);
-	fc = lport_priv(lp);
-
-	/* configure fc_lport, e.g., em */
-	rc = fcoe_lport_config(lp);
-	if (rc) {
-		FC_DBG("Could not configure lport\n");
-		goto out_host_put;
-	}
-
-	/* configure lport network properties */
-	rc = fcoe_netdev_config(lp, netdev);
-	if (rc) {
-		FC_DBG("Could not configure netdev for lport\n");
-		goto out_host_put;
-	}
-
-	/* configure lport scsi host properties */
-	rc = fcoe_shost_config(lp, shost, &netdev->dev);
-	if (rc) {
-		FC_DBG("Could not configure shost for lport\n");
-		goto out_host_put;
-	}
-
-	/* lport exch manager allocation */
-	rc = fcoe_em_config(lp);
-	if (rc) {
-		FC_DBG("Could not configure em for lport\n");
-		goto out_host_put;
-	}
-
-	/* Initialize the library */
-	rc = fcoe_libfc_config(lp, &fcoe_libfc_fcn_templ);
-	if (rc) {
-		FC_DBG("Could not configure libfc for lport!\n");
-		goto out_lp_destroy;
-	}
-
-	/* add to lports list */
-	fcoe_hostlist_add(lp);
-
-	lp->boot_time = jiffies;
-
-	fc_fabric_login(lp);
-
-	dev_hold(netdev);
-
-	return rc;
-
-out_lp_destroy:
-	fc_exch_mgr_free(lp->emp); /* Free the EM */
-out_host_put:
-	scsi_host_put(lp->host);
-	return rc;
-}
-
-/**
- * fcoe_if_init() - attach to scsi transport
- *
- * Returns : 0 on success
- */
-static int __init fcoe_if_init(void)
-{
-	/* attach to scsi transport */
-	scsi_transport_fcoe_sw =
-		fc_attach_transport(&fcoe_transport_function);
-
-	if (!scsi_transport_fcoe_sw) {
-		printk(KERN_ERR "fcoe_init:fc_attach_transport() failed\n");
-		return -ENODEV;
-	}
-
-	return 0;
-}
-
-/**
- * fcoe_if_exit() - detach from scsi transport
- *
- * Returns : 0 on success
- */
-int __exit fcoe_if_exit(void)
-{
-	fc_release_transport(scsi_transport_fcoe_sw);
-	return 0;
-}
-
-/**
- * fcoe_percpu_thread_create() - Create a receive thread for an online cpu
- * @cpu: cpu index for the online cpu
- */
-static void fcoe_percpu_thread_create(unsigned int cpu)
-{
-	struct fcoe_percpu_s *p;
-	struct task_struct *thread;
-
-	p = &per_cpu(fcoe_percpu, cpu);
-
-	thread = kthread_create(fcoe_percpu_receive_thread,
-				(void *)p, "fcoethread/%d", cpu);
-
-	if (likely(!IS_ERR(p->thread))) {
-		kthread_bind(thread, cpu);
-		wake_up_process(thread);
-
-		spin_lock_bh(&p->fcoe_rx_list.lock);
-		p->thread = thread;
-		spin_unlock_bh(&p->fcoe_rx_list.lock);
-	}
-}
-
-/**
- * fcoe_percpu_thread_destroy() - removes the rx thread for the given cpu
- * @cpu: cpu index the rx thread is to be removed
- *
- * Destroys a per-CPU Rx thread. Any pending skbs are moved to the
- * current CPU's Rx thread. If the thread being destroyed is bound to
- * the CPU processing this context the skbs will be freed.
- */
-static void fcoe_percpu_thread_destroy(unsigned int cpu)
-{
-	struct fcoe_percpu_s *p;
-	struct task_struct *thread;
-	struct page *crc_eof;
-	struct sk_buff *skb;
-#ifdef CONFIG_SMP
-	struct fcoe_percpu_s *p0;
-	unsigned targ_cpu = smp_processor_id();
-#endif /* CONFIG_SMP */
-
-	printk(KERN_DEBUG "fcoe: Destroying receive thread for CPU %d\n", cpu);
-
-	/* Prevent any new skbs from being queued for this CPU. */
-	p = &per_cpu(fcoe_percpu, cpu);
-	spin_lock_bh(&p->fcoe_rx_list.lock);
-	thread = p->thread;
-	p->thread = NULL;
-	crc_eof = p->crc_eof_page;
-	p->crc_eof_page = NULL;
-	p->crc_eof_offset = 0;
-	spin_unlock_bh(&p->fcoe_rx_list.lock);
-
-#ifdef CONFIG_SMP
-	/*
-	 * Don't bother moving the skb's if this context is running
-	 * on the same CPU that is having its thread destroyed. This
-	 * can easily happen when the module is removed.
-	 */
-	if (cpu != targ_cpu) {
-		p0 = &per_cpu(fcoe_percpu, targ_cpu);
-		spin_lock_bh(&p0->fcoe_rx_list.lock);
-		if (p0->thread) {
-			FC_DBG("Moving frames from CPU %d to CPU %d\n",
-			       cpu, targ_cpu);
-
-			while ((skb = __skb_dequeue(&p->fcoe_rx_list)) != NULL)
-				__skb_queue_tail(&p0->fcoe_rx_list, skb);
-			spin_unlock_bh(&p0->fcoe_rx_list.lock);
-		} else {
-			/*
-			 * The targeted CPU is not initialized and cannot accept
-			 * new  skbs. Unlock the targeted CPU and drop the skbs
-			 * on the CPU that is going offline.
-			 */
-			while ((skb = __skb_dequeue(&p->fcoe_rx_list)) != NULL)
-				kfree_skb(skb);
-			spin_unlock_bh(&p0->fcoe_rx_list.lock);
-		}
-	} else {
-		/*
-		 * This scenario occurs when the module is being removed
-		 * and all threads are being destroyed. skbs will continue
-		 * to be shifted from the CPU thread that is being removed
-		 * to the CPU thread associated with the CPU that is processing
-		 * the module removal. Once there is only one CPU Rx thread it
-		 * will reach this case and we will drop all skbs and later
-		 * stop the thread.
-		 */
-		spin_lock_bh(&p->fcoe_rx_list.lock);
-		while ((skb = __skb_dequeue(&p->fcoe_rx_list)) != NULL)
-			kfree_skb(skb);
-		spin_unlock_bh(&p->fcoe_rx_list.lock);
-	}
-#else
-	/*
-	 * This a non-SMP scenario where the singluar Rx thread is
-	 * being removed. Free all skbs and stop the thread.
-	 */
-	spin_lock_bh(&p->fcoe_rx_list.lock);
-	while ((skb = __skb_dequeue(&p->fcoe_rx_list)) != NULL)
-		kfree_skb(skb);
-	spin_unlock_bh(&p->fcoe_rx_list.lock);
-#endif
-
-	if (thread)
-		kthread_stop(thread);
-
-	if (crc_eof)
-		put_page(crc_eof);
-}
-
-/**
- * fcoe_cpu_callback() - fcoe cpu hotplug event callback
- * @nfb: callback data block
- * @action: event triggering the callback
- * @hcpu: index for the cpu of this event
- *
- * This creates or destroys per cpu data for fcoe
- *
- * Returns NOTIFY_OK always.
- */
-static int fcoe_cpu_callback(struct notifier_block *nfb,
-			     unsigned long action, void *hcpu)
-{
-	unsigned cpu = (unsigned long)hcpu;
-
-	switch (action) {
-	case CPU_ONLINE:
-	case CPU_ONLINE_FROZEN:
-		FC_DBG("CPU %x online: Create Rx thread\n", cpu);
-		fcoe_percpu_thread_create(cpu);
-		break;
-	case CPU_DEAD:
-	case CPU_DEAD_FROZEN:
-		FC_DBG("CPU %x offline: Remove Rx thread\n", cpu);
-		fcoe_percpu_thread_destroy(cpu);
-		break;
-	default:
-		break;
-	}
-	return NOTIFY_OK;
-}
-
-static struct notifier_block fcoe_cpu_notifier = {
-	.notifier_call = fcoe_cpu_callback,
-};
-
-/**
- * fcoe_rcv() - this is the fcoe receive function called by NET_RX_SOFTIRQ
- * @skb: the receive skb
- * @dev: associated net device
- * @ptype: context
- * @odldev: last device
- *
- * this function will receive the packet and build fc frame and pass it up
- *
- * Returns: 0 for success
- */
-int fcoe_rcv(struct sk_buff *skb, struct net_device *dev,
-	     struct packet_type *ptype, struct net_device *olddev)
-{
-	struct fc_lport *lp;
-	struct fcoe_rcv_info *fr;
-	struct fcoe_softc *fc;
-	struct fc_frame_header *fh;
-	struct fcoe_percpu_s *fps;
-	unsigned short oxid;
-	unsigned int cpu = 0;
-
-	fc = container_of(ptype, struct fcoe_softc, fcoe_packet_type);
-	lp = fc->lp;
-	if (unlikely(lp == NULL)) {
-		FC_DBG("cannot find hba structure");
-		goto err2;
-	}
-
-	if (unlikely(debug_fcoe)) {
-		FC_DBG("skb_info: len:%d data_len:%d head:%p data:%p tail:%p "
-		       "end:%p sum:%d dev:%s", 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>");
-
-	}
-
-	/* check for FCOE packet type */
-	if (unlikely(eth_hdr(skb)->h_proto != htons(ETH_P_FCOE))) {
-		FC_DBG("wrong FC type frame");
-		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);
-
-	oxid = ntohs(fh->fh_ox_id);
-
-	fr = fcoe_dev_from_skb(skb);
-	fr->fr_dev = lp;
-	fr->ptype = ptype;
-
-#ifdef CONFIG_SMP
-	/*
-	 * The incoming frame exchange id(oxid) is ANDed with num of online
-	 * cpu bits to get cpu and then this cpu is used for selecting
-	 * a per cpu kernel thread from fcoe_percpu.
-	 */
-	cpu = oxid & (num_online_cpus() - 1);
-#endif
-
-	fps = &per_cpu(fcoe_percpu, cpu);
-	spin_lock_bh(&fps->fcoe_rx_list.lock);
-	if (unlikely(!fps->thread)) {
-		/*
-		 * The targeted CPU is not ready, let's target
-		 * the first CPU now. For non-SMP systems this
-		 * will check the same CPU twice.
-		 */
-		FC_DBG("CPU is online, but no receive thread ready "
-		       "for incoming skb- using first online CPU.\n");
-
-		spin_unlock_bh(&fps->fcoe_rx_list.lock);
-		cpu = first_cpu(cpu_online_map);
-		fps = &per_cpu(fcoe_percpu, cpu);
-		spin_lock_bh(&fps->fcoe_rx_list.lock);
-		if (!fps->thread) {
-			spin_unlock_bh(&fps->fcoe_rx_list.lock);
-			goto err;
-		}
-	}
-
-	/*
-	 * 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.
-	 */
-	__skb_queue_tail(&fps->fcoe_rx_list, skb);
-	if (fps->fcoe_rx_list.qlen == 1)
-		wake_up_process(fps->thread);
-
-	spin_unlock_bh(&fps->fcoe_rx_list.lock);
-
-	return 0;
-err:
-	fc_lport_get_stats(lp)->ErrorFrames++;
-
-err2:
-	kfree_skb(skb);
-	return -1;
-}
-EXPORT_SYMBOL_GPL(fcoe_rcv);
-
-/**
- * fcoe_start_io() - pass to netdev to start xmit for fcoe
- * @skb: the skb to be xmitted
- *
- * Returns: 0 for success
- */
-static inline int fcoe_start_io(struct sk_buff *skb)
-{
-	int rc;
-
-	skb_get(skb);
-	rc = dev_queue_xmit(skb);
-	if (rc != 0)
-		return rc;
-	kfree_skb(skb);
-	return 0;
-}
-
-/**
- * fcoe_get_paged_crc_eof() - in case we need alloc a page for crc_eof
- * @skb: the skb to be xmitted
- * @tlen: total len
- *
- * Returns: 0 for success
- */
-static int fcoe_get_paged_crc_eof(struct sk_buff *skb, int tlen)
-{
-	struct fcoe_percpu_s *fps;
-	struct page *page;
-
-	fps = &get_cpu_var(fcoe_percpu);
-	page = fps->crc_eof_page;
-	if (!page) {
-		page = alloc_page(GFP_ATOMIC);
-		if (!page) {
-			put_cpu_var(fcoe_percpu);
-			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);
-	}
-	put_cpu_var(fcoe_percpu);
-	return 0;
-}
-
-/**
- * fcoe_fc_crc() - calculates FC CRC in this fcoe skb
- * @fp: the fc_frame containg data to be checksummed
- *
- * This uses crc32() to calculate the crc for fc frame
- * Return   : 32 bit crc
- */
-u32 fcoe_fc_crc(struct fc_frame *fp)
-{
-	struct sk_buff *skb = fp_skb(fp);
-	struct skb_frag_struct *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 = frag->page_offset;
-		len = frag->size;
-		while (len > 0) {
-			clen = min(len, PAGE_SIZE - (off & ~PAGE_MASK));
-			data = kmap_atomic(frag->page + (off >> PAGE_SHIFT),
-					   KM_SKB_DATA_SOFTIRQ);
-			crc = crc32(crc, data + (off & ~PAGE_MASK), clen);
-			kunmap_atomic(data, KM_SKB_DATA_SOFTIRQ);
-			off += clen;
-			len -= clen;
-		}
-	}
-	return crc;
-}
-EXPORT_SYMBOL_GPL(fcoe_fc_crc);
-
-/**
- * fcoe_xmit() - FCoE frame transmit function
- * @lp:	the associated local port
- * @fp: the fc_frame to be transmitted
- *
- * Return   : 0 for success
- */
-int fcoe_xmit(struct fc_lport *lp, struct fc_frame *fp)
-{
-	int wlen, rc = 0;
-	u32 crc;
-	struct ethhdr *eh;
-	struct fcoe_crc_eof *cp;
-	struct sk_buff *skb;
-	struct fcoe_dev_stats *stats;
-	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 */
-	int flogi_in_progress = 0;
-	struct fcoe_softc *fc;
-	u8 sof, eof;
-	struct fcoe_hdr *hp;
-
-	WARN_ON((fr_len(fp) % sizeof(u32)) != 0);
-
-	fc = lport_priv(lp);
-	/*
-	 * if it is a flogi then we need to learn gw-addr
-	 * and my own fcid
-	 */
-	fh = fc_frame_header_get(fp);
-	if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
-		if (fc_frame_payload_op(fp) == ELS_FLOGI) {
-			fc->flogi_oxid = ntohs(fh->fh_ox_id);
-			fc->address_mode = FCOE_FCOUI_ADDR_MODE;
-			fc->flogi_progress = 1;
-			flogi_in_progress = 1;
-		} else if (fc->flogi_progress && ntoh24(fh->fh_s_id) != 0) {
-			/*
-			 * Here we must've 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 receving the
-			 * FLOGI.
-			 */
-			fc_fcoe_set_mac(fc->data_src_addr, fh->fh_s_id);
-			fc->flogi_progress = 0;
-		}
-	}
-
-	skb = fp_skb(fp);
-	sof = fr_sof(fp);
-	eof = fr_eof(fp);
-
-	elen = (fc->real_dev->priv_flags & IFF_802_1Q_VLAN) ?
-		sizeof(struct vlan_ethhdr) : 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(lp->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 fc crc and eof to the skb buff */
-	if (skb_is_nonlinear(skb)) {
-		skb_frag_t *frag;
-		if (fcoe_get_paged_crc_eof(skb, tlen)) {
-			kfree_skb(skb);
-			return -ENOMEM;
-		}
-		frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
-		cp = kmap_atomic(frag->page, KM_SKB_DATA_SOFTIRQ)
-			+ frag->page_offset;
-	} else {
-		cp = (struct fcoe_crc_eof *)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, KM_SKB_DATA_SOFTIRQ);
-		cp = NULL;
-	}
-
-	/* adjust skb netowrk/transport offsets to match mac/fcoe/fc */
-	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->dev = fc->real_dev;
-
-	/* fill up mac and fcoe headers */
-	eh = eth_hdr(skb);
-	eh->h_proto = htons(ETH_P_FCOE);
-	if (fc->address_mode == FCOE_FCOUI_ADDR_MODE)
-		fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
-	else
-		/* insert GW address */
-		memcpy(eh->h_dest, fc->dest_addr, ETH_ALEN);
-
-	if (unlikely(flogi_in_progress))
-		memcpy(eh->h_source, fc->ctl_src_addr, ETH_ALEN);
-	else
-		memcpy(eh->h_source, fc->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;
-
-#ifdef NETIF_F_FSO
-	/* fcoe lso, mss is in max_payload which is non-zero for FCP data */
-	if (lp->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;
-	}
-#endif
-	/* update tx stats: regardless if LLD fails */
-	stats = fc_lport_get_stats(lp);
-	stats->TxFrames++;
-	stats->TxWords += wlen;
-
-	/* send down to lld */
-	fr_dev(fp) = lp;
-	if (fc->fcoe_pending_queue.qlen)
-		rc = fcoe_check_wait_queue(lp);
-
-	if (rc == 0)
-		rc = fcoe_start_io(skb);
-
-	if (rc) {
-		spin_lock_bh(&fc->fcoe_pending_queue.lock);
-		__skb_queue_tail(&fc->fcoe_pending_queue, skb);
-		spin_unlock_bh(&fc->fcoe_pending_queue.lock);
-		if (fc->fcoe_pending_queue.qlen > FCOE_MAX_QUEUE_DEPTH)
-			lp->qfull = 1;
-	}
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(fcoe_xmit);
-
-/**
- * fcoe_percpu_receive_thread() - recv thread per cpu
- * @arg: ptr to the fcoe per cpu struct
- *
- * Return: 0 for success
- */
-int fcoe_percpu_receive_thread(void *arg)
-{
-	struct fcoe_percpu_s *p = arg;
-	u32 fr_len;
-	struct fc_lport *lp;
-	struct fcoe_rcv_info *fr;
-	struct fcoe_dev_stats *stats;
-	struct fc_frame_header *fh;
-	struct sk_buff *skb;
-	struct fcoe_crc_eof crc_eof;
-	struct fc_frame *fp;
-	u8 *mac = NULL;
-	struct fcoe_softc *fc;
-	struct fcoe_hdr *hp;
-
-	set_user_nice(current, -20);
-
-	while (!kthread_should_stop()) {
-
-		spin_lock_bh(&p->fcoe_rx_list.lock);
-		while ((skb = __skb_dequeue(&p->fcoe_rx_list)) == NULL) {
-			set_current_state(TASK_INTERRUPTIBLE);
-			spin_unlock_bh(&p->fcoe_rx_list.lock);
-			schedule();
-			set_current_state(TASK_RUNNING);
-			if (kthread_should_stop())
-				return 0;
-			spin_lock_bh(&p->fcoe_rx_list.lock);
-		}
-		spin_unlock_bh(&p->fcoe_rx_list.lock);
-		fr = fcoe_dev_from_skb(skb);
-		lp = fr->fr_dev;
-		if (unlikely(lp == NULL)) {
-			FC_DBG("invalid HBA Structure");
-			kfree_skb(skb);
-			continue;
-		}
-
-		if (unlikely(debug_fcoe)) {
-			FC_DBG("skb_info: len:%d data_len:%d head:%p data:%p "
-			       "tail:%p end:%p sum:%d dev:%s",
-			       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>");
-		}
-
-		/*
-		 * Save source MAC address before discarding header.
-		 */
-		fc = lport_priv(lp);
-		if (unlikely(fc->flogi_progress))
-			mac = eth_hdr(skb)->h_source;
-
-		if (skb_is_nonlinear(skb))
-			skb_linearize(skb);	/* not ideal */
-
-		/*
-		 * Frame length checks and setting up the header pointers
-		 * was done in fcoe_rcv already.
-		 */
-		hp = (struct fcoe_hdr *) skb_network_header(skb);
-		fh = (struct fc_frame_header *) skb_transport_header(skb);
-
-		stats = fc_lport_get_stats(lp);
-		if (unlikely(FC_FCOE_DECAPS_VER(hp) != FC_FCOE_VER)) {
-			if (stats->ErrorFrames < 5)
-				printk(KERN_WARNING "FCoE version "
-				       "mismatch: The frame has "
-				       "version %x, but the "
-				       "initiator supports version "
-				       "%x\n", FC_FCOE_DECAPS_VER(hp),
-				       FC_FCOE_VER);
-			stats->ErrorFrames++;
-			kfree_skb(skb);
-			continue;
-		}
-
-		skb_pull(skb, sizeof(struct fcoe_hdr));
-		fr_len = skb->len - sizeof(struct fcoe_crc_eof);
-
-		stats->RxFrames++;
-		stats->RxWords += fr_len / FCOE_WORD_TO_BYTE;
-
-		fp = (struct fc_frame *)skb;
-		fc_frame_init(fp);
-		fr_dev(fp) = lp;
-		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))) {
-			kfree_skb(skb);
-			continue;
-		}
-		fr_eof(fp) = crc_eof.fcoe_eof;
-		fr_crc(fp) = crc_eof.fcoe_crc32;
-		if (pskb_trim(skb, fr_len)) {
-			kfree_skb(skb);
-			continue;
-		}
-
-		/*
-		 * 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 (lp->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) {
-			fc_exch_recv(lp, lp->emp, fp);
-			continue;
-		}
-		if (fr_flags(fp) & FCPHF_CRC_UNCHECKED) {
-			if (le32_to_cpu(fr_crc(fp)) !=
-			    ~crc32(~0, skb->data, fr_len)) {
-				if (debug_fcoe || stats->InvalidCRCCount < 5)
-					printk(KERN_WARNING "fcoe: dropping "
-					       "frame with CRC error\n");
-				stats->InvalidCRCCount++;
-				stats->ErrorFrames++;
-				fc_frame_free(fp);
-				continue;
-			}
-			fr_flags(fp) &= ~FCPHF_CRC_UNCHECKED;
-		}
-		/* non flogi and non data exchanges are handled here */
-		if (unlikely(fc->flogi_progress))
-			fcoe_recv_flogi(fc, fp, mac);
-		fc_exch_recv(lp, lp->emp, fp);
-	}
-	return 0;
-}
-
-/**
- * fcoe_recv_flogi() - flogi receive function
- * @fc: associated fcoe_softc
- * @fp: the recieved frame
- * @sa: the source address of this flogi
- *
- * This is responsible to parse the flogi response and sets the corresponding
- * mac address for the initiator, eitehr OUI based or GW based.
- *
- * Returns: none
- */
-static void fcoe_recv_flogi(struct fcoe_softc *fc, struct fc_frame *fp, u8 *sa)
-{
-	struct fc_frame_header *fh;
-	u8 op;
-
-	fh = fc_frame_header_get(fp);
-	if (fh->fh_type != FC_TYPE_ELS)
-		return;
-	op = fc_frame_payload_op(fp);
-	if (op == ELS_LS_ACC && fh->fh_r_ctl == FC_RCTL_ELS_REP &&
-	    fc->flogi_oxid == ntohs(fh->fh_ox_id)) {
-		/*
-		 * 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 (!compare_ether_addr(sa, (u8[6]) FC_FCOE_FLOGI_MAC)) {
-			fc->address_mode = FCOE_FCOUI_ADDR_MODE;
-		} else {
-			memcpy(fc->dest_addr, sa, ETH_ALEN);
-			fc->address_mode = FCOE_GW_ADDR_MODE;
-		}
-
-		/*
-		 * Remove any previously-set unicast MAC filter.
-		 * Add secondary FCoE MAC address filter for our OUI.
-		 */
-		rtnl_lock();
-		if (compare_ether_addr(fc->data_src_addr, (u8[6]) { 0 }))
-			dev_unicast_delete(fc->real_dev, fc->data_src_addr,
-					   ETH_ALEN);
-		fc_fcoe_set_mac(fc->data_src_addr, fh->fh_d_id);
-		dev_unicast_add(fc->real_dev, fc->data_src_addr, ETH_ALEN);
-		rtnl_unlock();
-
-		fc->flogi_progress = 0;
-	} else if (op == ELS_FLOGI && fh->fh_r_ctl == FC_RCTL_ELS_REQ && sa) {
-		/*
-		 * Save source MAC for point-to-point responses.
-		 */
-		memcpy(fc->dest_addr, sa, ETH_ALEN);
-		fc->address_mode = FCOE_GW_ADDR_MODE;
-	}
-}
-
-/**
- * fcoe_watchdog() - fcoe timer callback
- * @vp:
- *
- * This checks the pending queue length for fcoe and set lport qfull
- * if the FCOE_MAX_QUEUE_DEPTH is reached. This is done for all fc_lport on the
- * fcoe_hostlist.
- *
- * Returns: 0 for success
- */
-void fcoe_watchdog(ulong vp)
-{
-	struct fcoe_softc *fc;
-
-	read_lock(&fcoe_hostlist_lock);
-	list_for_each_entry(fc, &fcoe_hostlist, list) {
-		if (fc->lp)
-			fcoe_check_wait_queue(fc->lp);
-	}
-	read_unlock(&fcoe_hostlist_lock);
-
-	fcoe_timer.expires = jiffies + (1 * HZ);
-	add_timer(&fcoe_timer);
-}
-
-
-/**
- * fcoe_check_wait_queue() - put the skb into fcoe pending xmit queue
- * @lp: the fc_port for this skb
- * @skb: the associated skb to be xmitted
- *
- * This empties the wait_queue, dequeue the head of the wait_queue queue
- * and calls fcoe_start_io() for each packet, if all skb have been
- * transmitted, return qlen or -1 if a error occurs, then restore
- * wait_queue and  try again later.
- *
- * The wait_queue is used when the skb transmit fails. skb will go
- * in the wait_queue which will be emptied by the time function OR
- * by the next skb transmit.
- *
- * Returns: 0 for success
- */
-static int fcoe_check_wait_queue(struct fc_lport *lp)
-{
-	struct fcoe_softc *fc = lport_priv(lp);
-	struct sk_buff *skb;
-	int rc = -1;
-
-	spin_lock_bh(&fc->fcoe_pending_queue.lock);
-	if (fc->fcoe_pending_queue_active)
-		goto out;
-	fc->fcoe_pending_queue_active = 1;
-
-	while (fc->fcoe_pending_queue.qlen) {
-		/* keep qlen > 0 until fcoe_start_io succeeds */
-		fc->fcoe_pending_queue.qlen++;
-		skb = __skb_dequeue(&fc->fcoe_pending_queue);
-
-		spin_unlock_bh(&fc->fcoe_pending_queue.lock);
-		rc = fcoe_start_io(skb);
-		spin_lock_bh(&fc->fcoe_pending_queue.lock);
-
-		if (rc) {
-			__skb_queue_head(&fc->fcoe_pending_queue, skb);
-			/* undo temporary increment above */
-			fc->fcoe_pending_queue.qlen--;
-			break;
-		}
-		/* undo temporary increment above */
-		fc->fcoe_pending_queue.qlen--;
-	}
-
-	if (fc->fcoe_pending_queue.qlen < FCOE_LOW_QUEUE_DEPTH)
-		lp->qfull = 0;
-	fc->fcoe_pending_queue_active = 0;
-	rc = fc->fcoe_pending_queue.qlen;
-out:
-	spin_unlock_bh(&fc->fcoe_pending_queue.lock);
-	return rc;
-}
-
-/**
- * fcoe_dev_setup() - setup link change notification interface
- */
-static void fcoe_dev_setup()
-{
-	/*
-	 * here setup a interface specific wd time to
-	 * monitor the link state
-	 */
-	register_netdevice_notifier(&fcoe_notifier);
-}
-
-/**
- * fcoe_dev_setup() - cleanup link change notification interface
- */
-static void fcoe_dev_cleanup(void)
-{
-	unregister_netdevice_notifier(&fcoe_notifier);
-}
-
-/**
- * fcoe_device_notification() - netdev event notification callback
- * @notifier: context of the notification
- * @event: type of event
- * @ptr: fixed array for output parsed ifname
- *
- * 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 fc_lport *lp = NULL;
-	struct net_device *real_dev = ptr;
-	struct fcoe_softc *fc;
-	struct fcoe_dev_stats *stats;
-	u32 new_link_up;
-	u32 mfs;
-	int rc = NOTIFY_OK;
-
-	read_lock(&fcoe_hostlist_lock);
-	list_for_each_entry(fc, &fcoe_hostlist, list) {
-		if (fc->real_dev == real_dev) {
-			lp = fc->lp;
-			break;
-		}
-	}
-	read_unlock(&fcoe_hostlist_lock);
-	if (lp == NULL) {
-		rc = NOTIFY_DONE;
-		goto out;
-	}
-
-	new_link_up = lp->link_up;
-	switch (event) {
-	case NETDEV_DOWN:
-	case NETDEV_GOING_DOWN:
-		new_link_up = 0;
-		break;
-	case NETDEV_UP:
-	case NETDEV_CHANGE:
-		new_link_up = !fcoe_link_ok(lp);
-		break;
-	case NETDEV_CHANGEMTU:
-		mfs = fc->real_dev->mtu -
-			(sizeof(struct fcoe_hdr) +
-			 sizeof(struct fcoe_crc_eof));
-		if (mfs >= FC_MIN_MAX_FRAME)
-			fc_set_mfs(lp, mfs);
-		new_link_up = !fcoe_link_ok(lp);
-		break;
-	case NETDEV_REGISTER:
-		break;
-	default:
-		FC_DBG("unknown event %ld call", event);
-	}
-	if (lp->link_up != new_link_up) {
-		if (new_link_up)
-			fc_linkup(lp);
-		else {
-			stats = fc_lport_get_stats(lp);
-			stats->LinkFailureCount++;
-			fc_linkdown(lp);
-			fcoe_clean_pending_queue(lp);
-		}
-	}
-out:
-	return rc;
-}
-
-/**
- * fcoe_if_to_netdev() - parse a name buffer to get netdev
- * @ifname: fixed array for output parsed ifname
- * @buffer: incoming buffer to be copied
- *
- * Returns: NULL or ptr to netdeive
- */
-static struct net_device *fcoe_if_to_netdev(const char *buffer)
-{
-	char *cp;
-	char ifname[IFNAMSIZ + 2];
-
-	if (buffer) {
-		strlcpy(ifname, buffer, IFNAMSIZ);
-		cp = ifname + strlen(ifname);
-		while (--cp >= ifname && *cp == '\n')
-			*cp = '\0';
-		return dev_get_by_name(&init_net, ifname);
-	}
-	return NULL;
-}
-
-/**
- * fcoe_netdev_to_module_owner() - finds out the nic drive moddule of the netdev
- * @netdev: the target netdev
- *
- * Returns: ptr to the struct module, NULL for failure
- */
-static struct module *
-fcoe_netdev_to_module_owner(const struct net_device *netdev)
-{
-	struct device *dev;
-
-	if (!netdev)
-		return NULL;
-
-	dev = netdev->dev.parent;
-	if (!dev)
-		return NULL;
-
-	if (!dev->driver)
-		return NULL;
-
-	return dev->driver->owner;
-}
-
-/**
- * fcoe_ethdrv_get() - Hold the Ethernet driver
- * @netdev: the target netdev
- *
- * Holds the Ethernet driver module by try_module_get() for
- * the corresponding netdev.
- *
- * Returns: 0 for succsss
- */
-static int fcoe_ethdrv_get(const struct net_device *netdev)
-{
-	struct module *owner;
-
-	owner = fcoe_netdev_to_module_owner(netdev);
-	if (owner) {
-		printk(KERN_DEBUG "fcoe:hold driver module %s for %s\n",
-		       module_name(owner), netdev->name);
-		return  try_module_get(owner);
-	}
-	return -ENODEV;
-}
-
-/**
- * fcoe_ethdrv_put() - Release the Ethernet driver
- * @netdev: the target netdev
- *
- * Releases the Ethernet driver module by module_put for
- * the corresponding netdev.
- *
- * Returns: 0 for succsss
- */
-static int fcoe_ethdrv_put(const struct net_device *netdev)
-{
-	struct module *owner;
-
-	owner = fcoe_netdev_to_module_owner(netdev);
-	if (owner) {
-		printk(KERN_DEBUG "fcoe:release driver module %s for %s\n",
-		       module_name(owner), netdev->name);
-		module_put(owner);
-		return 0;
-	}
-	return -ENODEV;
-}
-
-/**
- * fcoe_destroy() - handles the destroy from sysfs
- * @buffer: expcted to be a eth if name
- * @kp: associated kernel param
- *
- * Returns: 0 for success
- */
-static int fcoe_destroy(const char *buffer, struct kernel_param *kp)
-{
-	int rc;
-	struct net_device *netdev;
-
-	netdev = fcoe_if_to_netdev(buffer);
-	if (!netdev) {
-		rc = -ENODEV;
-		goto out_nodev;
-	}
-	/* look for existing lport */
-	if (!fcoe_hostlist_lookup(netdev)) {
-		rc = -ENODEV;
-		goto out_putdev;
-	}
-	rc = fcoe_if_destroy(netdev);
-	if (rc) {
-		printk(KERN_ERR "fcoe: fcoe_if_destroy(%s) failed\n",
-		       netdev->name);
-		rc = -EIO;
-		goto out_putdev;
-	}
-	fcoe_ethdrv_put(netdev);
-	rc = 0;
-out_putdev:
-	dev_put(netdev);
-out_nodev:
-	return rc;
-}
-
-/**
- * fcoe_create() - Handles the create call from sysfs
- * @buffer: expcted to be a eth if name
- * @kp: associated kernel param
- *
- * Returns: 0 for success
- */
-static int fcoe_create(const char *buffer, struct kernel_param *kp)
-{
-	int rc;
-	struct net_device *netdev;
-
-	netdev = fcoe_if_to_netdev(buffer);
-	if (!netdev) {
-		rc = -ENODEV;
-		goto out_nodev;
-	}
-	/* look for existing lport */
-	if (fcoe_hostlist_lookup(netdev)) {
-		rc = -EEXIST;
-		goto out_putdev;
-	}
-	fcoe_ethdrv_get(netdev);
-
-	rc = fcoe_if_create(netdev);
-	if (rc) {
-		printk(KERN_ERR "fcoe: fcoe_if_create(%s) failed\n",
-		       netdev->name);
-		fcoe_ethdrv_put(netdev);
-		rc = -EIO;
-		goto out_putdev;
-	}
-	rc = 0;
-out_putdev:
-	dev_put(netdev);
-out_nodev:
-	return rc;
-}
-
-module_param_call(create, fcoe_create, NULL, NULL, S_IWUSR);
-__MODULE_PARM_TYPE(create, "string");
-MODULE_PARM_DESC(create, "Create fcoe port using net device passed in.");
-module_param_call(destroy, fcoe_destroy, NULL, NULL, S_IWUSR);
-__MODULE_PARM_TYPE(destroy, "string");
-MODULE_PARM_DESC(destroy, "Destroy fcoe port");
-
-/**
- * fcoe_link_ok() - Check if link is ok for the fc_lport
- * @lp: ptr to the fc_lport
- *
- * Any permanently-disqualifying conditions have been previously checked.
- * This also updates the speed setting, which may change with link for 100/1000.
- *
- * This function should probably be checking for PAUSE support at some point
- * in the future. Currently Per-priority-pause is not determinable using
- * ethtool, so we shouldn't be restrictive until that problem is resolved.
- *
- * Returns: 0 if link is OK for use by FCoE.
- *
- */
-int fcoe_link_ok(struct fc_lport *lp)
-{
-	struct fcoe_softc *fc = lport_priv(lp);
-	struct net_device *dev = fc->real_dev;
-	struct ethtool_cmd ecmd = { ETHTOOL_GSET };
-	int rc = 0;
-
-	if ((dev->flags & IFF_UP) && netif_carrier_ok(dev)) {
-		dev = fc->phys_dev;
-		if (dev->ethtool_ops->get_settings) {
-			dev->ethtool_ops->get_settings(dev, &ecmd);
-			lp->link_supported_speeds &=
-				~(FC_PORTSPEED_1GBIT | FC_PORTSPEED_10GBIT);
-			if (ecmd.supported & (SUPPORTED_1000baseT_Half |
-					      SUPPORTED_1000baseT_Full))
-				lp->link_supported_speeds |= FC_PORTSPEED_1GBIT;
-			if (ecmd.supported & SUPPORTED_10000baseT_Full)
-				lp->link_supported_speeds |=
-					FC_PORTSPEED_10GBIT;
-			if (ecmd.speed == SPEED_1000)
-				lp->link_speed = FC_PORTSPEED_1GBIT;
-			if (ecmd.speed == SPEED_10000)
-				lp->link_speed = FC_PORTSPEED_10GBIT;
-		}
-	} else
-		rc = -1;
-
-	return rc;
-}
-EXPORT_SYMBOL_GPL(fcoe_link_ok);
-
-/**
- * fcoe_percpu_clean() - Clear the pending skbs for an lport
- * @lp: the fc_lport
- */
-void fcoe_percpu_clean(struct fc_lport *lp)
-{
-	struct fcoe_percpu_s *pp;
-	struct fcoe_rcv_info *fr;
-	struct sk_buff_head *list;
-	struct sk_buff *skb, *next;
-	struct sk_buff *head;
-	unsigned int cpu;
-
-	for_each_possible_cpu(cpu) {
-		pp = &per_cpu(fcoe_percpu, cpu);
-		spin_lock_bh(&pp->fcoe_rx_list.lock);
-		list = &pp->fcoe_rx_list;
-		head = list->next;
-		for (skb = head; skb != (struct sk_buff *)list;
-		     skb = next) {
-			next = skb->next;
-			fr = fcoe_dev_from_skb(skb);
-			if (fr->fr_dev == lp) {
-				__skb_unlink(skb, list);
-				kfree_skb(skb);
-			}
-		}
-		spin_unlock_bh(&pp->fcoe_rx_list.lock);
-	}
-}
-EXPORT_SYMBOL_GPL(fcoe_percpu_clean);
-
-/**
- * fcoe_clean_pending_queue() - Dequeue a skb and free it
- * @lp: the corresponding fc_lport
- *
- * Returns: none
- */
-void fcoe_clean_pending_queue(struct fc_lport *lp)
-{
-	struct fcoe_softc  *fc = lport_priv(lp);
-	struct sk_buff *skb;
-
-	spin_lock_bh(&fc->fcoe_pending_queue.lock);
-	while ((skb = __skb_dequeue(&fc->fcoe_pending_queue)) != NULL) {
-		spin_unlock_bh(&fc->fcoe_pending_queue.lock);
-		kfree_skb(skb);
-		spin_lock_bh(&fc->fcoe_pending_queue.lock);
-	}
-	spin_unlock_bh(&fc->fcoe_pending_queue.lock);
-}
-EXPORT_SYMBOL_GPL(fcoe_clean_pending_queue);
-
-/**
- * libfc_host_alloc() - Allocate a Scsi_Host with room for the fc_lport
- * @sht: ptr to the scsi host templ
- * @priv_size: size of private data after fc_lport
- *
- * Returns: ptr to Scsi_Host
- * TODO: to libfc?
- */
-static inline struct Scsi_Host *
-libfc_host_alloc(struct scsi_host_template *sht, int priv_size)
-{
-	return scsi_host_alloc(sht, sizeof(struct fc_lport) + priv_size);
-}
-
-/**
- * fcoe_host_alloc() - Allocate a Scsi_Host with room for the fcoe_softc
- * @sht: ptr to the scsi host templ
- * @priv_size: size of private data after fc_lport
- *
- * Returns: ptr to Scsi_Host
- */
-struct Scsi_Host *fcoe_host_alloc(struct scsi_host_template *sht, int priv_size)
-{
-	return libfc_host_alloc(sht, sizeof(struct fcoe_softc) + priv_size);
-}
-EXPORT_SYMBOL_GPL(fcoe_host_alloc);
-
-/**
- * fcoe_reset() - Resets the fcoe
- * @shost: shost the reset is from
- *
- * Returns: always 0
- */
-int fcoe_reset(struct Scsi_Host *shost)
-{
-	struct fc_lport *lport = shost_priv(shost);
-	fc_lport_reset(lport);
-	return 0;
-}
-EXPORT_SYMBOL_GPL(fcoe_reset);
-
-/**
- * fcoe_wwn_from_mac() - Converts 48-bit IEEE MAC address to 64-bit FC WWN.
- * @mac: mac address
- * @scheme: check port
- * @port: port indicator for converting
- *
- * Returns: u64 fc world wide name
- */
-u64 fcoe_wwn_from_mac(unsigned char mac[MAX_ADDR_LEN],
-		      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_hostlist_lookup_softc() - find the corresponding lport by a given device
- * @device: this is currently ptr to net_device
- *
- * Returns: NULL or the located fcoe_softc
- */
-static struct fcoe_softc *
-fcoe_hostlist_lookup_softc(const struct net_device *dev)
-{
-	struct fcoe_softc *fc;
-
-	read_lock(&fcoe_hostlist_lock);
-	list_for_each_entry(fc, &fcoe_hostlist, list) {
-		if (fc->real_dev == dev) {
-			read_unlock(&fcoe_hostlist_lock);
-			return fc;
-		}
-	}
-	read_unlock(&fcoe_hostlist_lock);
-	return NULL;
-}
-
-/**
- * fcoe_hostlist_lookup() - Find the corresponding lport by netdev
- * @netdev: ptr to net_device
- *
- * Returns: 0 for success
- */
-struct fc_lport *fcoe_hostlist_lookup(const struct net_device *netdev)
-{
-	struct fcoe_softc *fc;
-
-	fc = fcoe_hostlist_lookup_softc(netdev);
-
-	return (fc) ? fc->lp : NULL;
-}
-EXPORT_SYMBOL_GPL(fcoe_hostlist_lookup);
-
-/**
- * fcoe_hostlist_add() - Add a lport to lports list
- * @lp: ptr to the fc_lport to badded
- *
- * Returns: 0 for success
- */
-int fcoe_hostlist_add(const struct fc_lport *lp)
-{
-	struct fcoe_softc *fc;
-
-	fc = fcoe_hostlist_lookup_softc(fcoe_netdev(lp));
-	if (!fc) {
-		fc = lport_priv(lp);
-		write_lock_bh(&fcoe_hostlist_lock);
-		list_add_tail(&fc->list, &fcoe_hostlist);
-		write_unlock_bh(&fcoe_hostlist_lock);
-	}
-	return 0;
-}
-EXPORT_SYMBOL_GPL(fcoe_hostlist_add);
-
-/**
- * fcoe_hostlist_remove() - remove a lport from lports list
- * @lp: ptr to the fc_lport to badded
- *
- * Returns: 0 for success
- */
-int fcoe_hostlist_remove(const struct fc_lport *lp)
-{
-	struct fcoe_softc *fc;
-
-	fc = fcoe_hostlist_lookup_softc(fcoe_netdev(lp));
-	BUG_ON(!fc);
-	write_lock_bh(&fcoe_hostlist_lock);
-	list_del(&fc->list);
-	write_unlock_bh(&fcoe_hostlist_lock);
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(fcoe_hostlist_remove);
-
-/**
- * fcoe_libfc_config() - sets up libfc related properties for lport
- * @lp: ptr to the fc_lport
- * @tt: libfc function template
- *
- * Returns : 0 for success
- */
-int fcoe_libfc_config(struct fc_lport *lp, struct libfc_function_template *tt)
-{
-	/* Set the function pointers set by the LLDD */
-	memcpy(&lp->tt, tt, sizeof(*tt));
-	if (fc_fcp_init(lp))
-		return -ENOMEM;
-	fc_exch_init(lp);
-	fc_elsct_init(lp);
-	fc_lport_init(lp);
-	fc_rport_init(lp);
-	fc_disc_init(lp);
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(fcoe_libfc_config);
-
-/**
- * fcoe_init() - fcoe module loading initialization
- *
- * Returns 0 on success, negative on failure
- */
-static int __init fcoe_init(void)
-{
-	unsigned int cpu;
-	int rc = 0;
-	struct fcoe_percpu_s *p;
-
-	INIT_LIST_HEAD(&fcoe_hostlist);
-	rwlock_init(&fcoe_hostlist_lock);
-
-	for_each_possible_cpu(cpu) {
-		p = &per_cpu(fcoe_percpu, cpu);
-		skb_queue_head_init(&p->fcoe_rx_list);
-	}
-
-	for_each_online_cpu(cpu)
-		fcoe_percpu_thread_create(cpu);
-
-	/* Initialize per CPU interrupt thread */
-	rc = register_hotcpu_notifier(&fcoe_cpu_notifier);
-	if (rc)
-		goto out_free;
-
-	/* Setup link change notification */
-	fcoe_dev_setup();
-
-	setup_timer(&fcoe_timer, fcoe_watchdog, 0);
-
-	mod_timer(&fcoe_timer, jiffies + (10 * HZ));
-
-	fcoe_if_init();
-
-	return 0;
-
-out_free:
-	for_each_online_cpu(cpu) {
-		fcoe_percpu_thread_destroy(cpu);
-	}
-
-	return rc;
-}
-module_init(fcoe_init);
-
-/**
- * fcoe_exit() - fcoe module unloading cleanup
- *
- * Returns 0 on success, negative on failure
- */
-static void __exit fcoe_exit(void)
-{
-	unsigned int cpu;
-	struct fcoe_softc *fc, *tmp;
-
-	fcoe_dev_cleanup();
-
-	/* Stop the timer */
-	del_timer_sync(&fcoe_timer);
-
-	/* releases the associated fcoe hosts */
-	list_for_each_entry_safe(fc, tmp, &fcoe_hostlist, list)
-		fcoe_if_destroy(fc->real_dev);
-
-	unregister_hotcpu_notifier(&fcoe_cpu_notifier);
-
-	for_each_online_cpu(cpu) {
-		fcoe_percpu_thread_destroy(cpu);
-	}
-
-	/* detach from scsi transport */
-	fcoe_if_exit();
-}
-module_exit(fcoe_exit);