text: /* bnx2fc_fcoe.c: QLogic Linux FCoE offload driver.
   * This file contains the code that interacts with libfc, libfcoe,
   * cnic modules to create FCoE instances, send/receive non-offloaded
   * FIP/FCoE packets, listen to link events etc.
   *
   * Copyright (c) 2008-2013 Broadcom Corporation
   * Copyright (c) 2014-2016 QLogic Corporation
   * Copyright (c) 2016-2017 Cavium Inc.
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation.
   *
   * Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com)
   */
  
  #include "bnx2fc.h"
  
  #include <linux/ethtool.h>
  
  static struct list_head adapter_list;
  static struct list_head if_list;
  static u32 adapter_count;
  static DEFINE_MUTEX(bnx2fc_dev_lock);
  DEFINE_PER_CPU(struct bnx2fc_percpu_s, bnx2fc_percpu);
  
  #define DRV_MODULE_NAME		"bnx2fc"
  #define DRV_MODULE_VERSION	BNX2FC_VERSION
  #define DRV_MODULE_RELDATE	"October 15, 2015"
  
  
  static char version[] =
  		"QLogic FCoE Driver " DRV_MODULE_NAME \
  		" v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
  
  
  MODULE_AUTHOR("Bhanu Prakash Gollapudi <bprakash@broadcom.com>");
  MODULE_DESCRIPTION("QLogic FCoE Driver");
  MODULE_LICENSE("GPL");
  MODULE_VERSION(DRV_MODULE_VERSION);
  
  #define BNX2FC_MAX_QUEUE_DEPTH	256
  #define BNX2FC_MIN_QUEUE_DEPTH	32
  #define FCOE_WORD_TO_BYTE  4
  
  static struct scsi_transport_template	*bnx2fc_transport_template;
  static struct scsi_transport_template	*bnx2fc_vport_xport_template;
  
  struct workqueue_struct *bnx2fc_wq;
  
  /* bnx2fc structure needs only one instance of the fcoe_percpu_s structure.
   * Here the io threads are per cpu but the l2 thread is just one
   */
  struct fcoe_percpu_s bnx2fc_global;
  static DEFINE_SPINLOCK(bnx2fc_global_lock);
  
  static struct cnic_ulp_ops bnx2fc_cnic_cb;
  static struct libfc_function_template bnx2fc_libfc_fcn_templ;
  static struct scsi_host_template bnx2fc_shost_template;
  static struct fc_function_template bnx2fc_transport_function;
  static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ;
  static struct fc_function_template bnx2fc_vport_xport_function;
  static int bnx2fc_create(struct net_device *netdev, enum fip_mode fip_mode);
  static void __bnx2fc_destroy(struct bnx2fc_interface *interface);
  static int bnx2fc_destroy(struct net_device *net_device);
  static int bnx2fc_enable(struct net_device *netdev);
  static int bnx2fc_disable(struct net_device *netdev);
  
  /* fcoe_syfs control interface handlers */
  static int bnx2fc_ctlr_alloc(struct net_device *netdev);
  static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev);
  
  static void bnx2fc_recv_frame(struct sk_buff *skb);
  
  static void bnx2fc_start_disc(struct bnx2fc_interface *interface);
  static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev);
  static int bnx2fc_lport_config(struct fc_lport *lport);
  static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba);
  static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba);
  static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba);
  static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba);
  static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba);
  static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
  				  struct device *parent, int npiv);
  static void bnx2fc_port_destroy(struct fcoe_port *port);
  
  static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device *phys_dev);
  static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
  							*phys_dev);
  static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface);
  static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic);
  
  static int bnx2fc_fw_init(struct bnx2fc_hba *hba);
  static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba);
  
  static void bnx2fc_port_shutdown(struct fc_lport *lport);
  static void bnx2fc_stop(struct bnx2fc_interface *interface);
  static int __init bnx2fc_mod_init(void);
  static void __exit bnx2fc_mod_exit(void);
  
  unsigned int bnx2fc_debug_level;
  module_param_named(debug_logging, bnx2fc_debug_level, int, S_IRUGO|S_IWUSR);
  MODULE_PARM_DESC(debug_logging,
  		"Option to enable extended logging,\n"
  		"\t\tDefault is 0 - no logging.\n"
  		"\t\t0x01 - SCSI cmd error, cleanup.\n"
  		"\t\t0x02 - Session setup, cleanup, etc.\n"
  		"\t\t0x04 - lport events, link, mtu, etc.\n"
  		"\t\t0x08 - ELS logs.\n"
  		"\t\t0x10 - fcoe L2 fame related logs.\n"
  		"\t\t0xff - LOG all messages.");
  
  static uint bnx2fc_devloss_tmo;
  module_param_named(devloss_tmo, bnx2fc_devloss_tmo, uint, S_IRUGO);
  MODULE_PARM_DESC(devloss_tmo, " Change devloss_tmo for the remote ports "
  	"attached via bnx2fc.");
  
  static uint bnx2fc_max_luns = BNX2FC_MAX_LUN;
  module_param_named(max_luns, bnx2fc_max_luns, uint, S_IRUGO);
  MODULE_PARM_DESC(max_luns, " Change the default max_lun per SCSI host. Default "
  	"0xffff.");
  
  static uint bnx2fc_queue_depth;
  module_param_named(queue_depth, bnx2fc_queue_depth, uint, S_IRUGO);
  MODULE_PARM_DESC(queue_depth, " Change the default queue depth of SCSI devices "
  	"attached via bnx2fc.");
  
  static uint bnx2fc_log_fka;
  module_param_named(log_fka, bnx2fc_log_fka, uint, S_IRUGO|S_IWUSR);
  MODULE_PARM_DESC(log_fka, " Print message to kernel log when fcoe is "
  	"initiating a FIP keep alive when debug logging is enabled.");
  
  static inline struct net_device *bnx2fc_netdev(const struct fc_lport *lport)
  {
  	return ((struct bnx2fc_interface *)
  		((struct fcoe_port *)lport_priv(lport))->priv)->netdev;
  }
  
  static void bnx2fc_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 bnx2fc_interface *fcoe = fcoe_ctlr_priv(ctlr);
  
  	fcf_dev->vlan_id = fcoe->vlan_id;
  }
  
  static void bnx2fc_clean_rx_queue(struct fc_lport *lp)
  {
  	struct fcoe_percpu_s *bg;
  	struct fcoe_rcv_info *fr;
  	struct sk_buff_head *list;
  	struct sk_buff *skb, *next;
  
  	bg = &bnx2fc_global;
  	spin_lock_bh(&bg->fcoe_rx_list.lock);
  	list = &bg->fcoe_rx_list;
  	skb_queue_walk_safe(list, skb, next) {
  		fr = fcoe_dev_from_skb(skb);
  		if (fr->fr_dev == lp) {
  			__skb_unlink(skb, list);
  			kfree_skb(skb);
  		}
  	}
  	spin_unlock_bh(&bg->fcoe_rx_list.lock);
  }
  
  int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen)
  {
  	int rc;
  	spin_lock(&bnx2fc_global_lock);
  	rc = fcoe_get_paged_crc_eof(skb, tlen, &bnx2fc_global);
  	spin_unlock(&bnx2fc_global_lock);
  
  	return rc;
  }
  
  static void bnx2fc_abort_io(struct fc_lport *lport)
  {
  	/*
  	 * This function is no-op for bnx2fc, but we do
  	 * not want to leave it as NULL either, as libfc
  	 * can call the default function which is
  	 * fc_fcp_abort_io.
  	 */
  }
  
  static void bnx2fc_cleanup(struct fc_lport *lport)
  {
  	struct fcoe_port *port = lport_priv(lport);
  	struct bnx2fc_interface *interface = port->priv;
  	struct bnx2fc_hba *hba = interface->hba;
  	struct bnx2fc_rport *tgt;
  	int i;
  
  	BNX2FC_MISC_DBG("Entered %s\n", __func__);
  	mutex_lock(&hba->hba_mutex);
  	spin_lock_bh(&hba->hba_lock);
  	for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) {
  		tgt = hba->tgt_ofld_list[i];
  		if (tgt) {
  			/* Cleanup IOs belonging to requested vport */
  			if (tgt->port == port) {
  				spin_unlock_bh(&hba->hba_lock);
  				BNX2FC_TGT_DBG(tgt, "flush/cleanup\n");
  				bnx2fc_flush_active_ios(tgt);
  				spin_lock_bh(&hba->hba_lock);
  			}
  		}
  	}
  	spin_unlock_bh(&hba->hba_lock);
  	mutex_unlock(&hba->hba_mutex);
  }
  
  static int bnx2fc_xmit_l2_frame(struct bnx2fc_rport *tgt,
  			     struct fc_frame *fp)
  {
  	struct fc_rport_priv *rdata = tgt->rdata;
  	struct fc_frame_header *fh;
  	int rc = 0;
  
  	fh = fc_frame_header_get(fp);
  	BNX2FC_TGT_DBG(tgt, "Xmit L2 frame rport = 0x%x, oxid = 0x%x, "
  			"r_ctl = 0x%x\n", rdata->ids.port_id,
  			ntohs(fh->fh_ox_id), fh->fh_r_ctl);
  	if ((fh->fh_type == FC_TYPE_ELS) &&
  	    (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
  
  		switch (fc_frame_payload_op(fp)) {
  		case ELS_ADISC:
  			rc = bnx2fc_send_adisc(tgt, fp);
  			break;
  		case ELS_LOGO:
  			rc = bnx2fc_send_logo(tgt, fp);
  			break;
  		case ELS_RLS:
  			rc = bnx2fc_send_rls(tgt, fp);
  			break;
  		default:
  			break;
  		}
  	} else if ((fh->fh_type ==  FC_TYPE_BLS) &&
  	    (fh->fh_r_ctl == FC_RCTL_BA_ABTS))
  		BNX2FC_TGT_DBG(tgt, "ABTS frame\n");
  	else {
  		BNX2FC_TGT_DBG(tgt, "Send L2 frame type 0x%x "
  				"rctl 0x%x thru non-offload path\n",
  				fh->fh_type, fh->fh_r_ctl);
  		return -ENODEV;
  	}
  	if (rc)
  		return -ENOMEM;
  	else
  		return 0;
  }
  
  /**
   * bnx2fc_xmit - bnx2fc's FCoE frame transmit function
   *
   * @lport:	the associated local port
   * @fp:	the fc_frame to be transmitted
   */
  static int bnx2fc_xmit(struct fc_lport *lport, struct fc_frame *fp)
  {
  	struct ethhdr		*eh;
  	struct fcoe_crc_eof	*cp;
  	struct sk_buff		*skb;
  	struct fc_frame_header	*fh;
  	struct bnx2fc_interface	*interface;
  	struct fcoe_ctlr        *ctlr;
  	struct bnx2fc_hba *hba;
  	struct fcoe_port	*port;
  	struct fcoe_hdr		*hp;
  	struct bnx2fc_rport	*tgt;
  	struct fc_stats		*stats;
  	u8			sof, eof;
  	u32			crc;
  	unsigned int		hlen, tlen, elen;
  	int			wlen, rc = 0;
  
  	port = (struct fcoe_port *)lport_priv(lport);
  	interface = port->priv;
  	ctlr = bnx2fc_to_ctlr(interface);
  	hba = interface->hba;
  
  	fh = fc_frame_header_get(fp);
  
  	skb = fp_skb(fp);
  	if (!lport->link_up) {
  		BNX2FC_HBA_DBG(lport, "bnx2fc_xmit link down\n");
  		kfree_skb(skb);
  		return 0;
  	}
  
  	if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
  		if (!ctlr->sel_fcf) {
  			BNX2FC_HBA_DBG(lport, "FCF not selected yet!\n");
  			kfree_skb(skb);
  			return -EINVAL;
  		}
  		if (fcoe_ctlr_els_send(ctlr, lport, skb))
  			return 0;
  	}
  
  	sof = fr_sof(fp);
  	eof = fr_eof(fp);
  
  	/*
  	 * Snoop the frame header to check if the frame is for
  	 * an offloaded session
  	 */
  	/*
  	 * tgt_ofld_list access is synchronized using
  	 * both hba mutex and hba lock. Atleast hba mutex or
  	 * hba lock needs to be held for read access.
  	 */
  
  	spin_lock_bh(&hba->hba_lock);
  	tgt = bnx2fc_tgt_lookup(port, ntoh24(fh->fh_d_id));
  	if (tgt && (test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags))) {
  		/* This frame is for offloaded session */
  		BNX2FC_HBA_DBG(lport, "xmit: Frame is for offloaded session "
  				"port_id = 0x%x\n", ntoh24(fh->fh_d_id));
  		spin_unlock_bh(&hba->hba_lock);
  		rc = bnx2fc_xmit_l2_frame(tgt, fp);
  		if (rc != -ENODEV) {
  			kfree_skb(skb);
  			return rc;
  		}
  	} else {
  		spin_unlock_bh(&hba->hba_lock);
  	}
  
  	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;
  
  	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 (bnx2fc_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(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->dev = interface->netdev;
  
  	/* fill up mac and fcoe headers */
  	eh = eth_hdr(skb);
  	eh->h_proto = htons(ETH_P_FCOE);
  	if (ctlr->map_dest)
  		fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
  	else
  		/* insert GW address */
  		memcpy(eh->h_dest, ctlr->dest_addr, ETH_ALEN);
  
  	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 */
  	stats = per_cpu_ptr(lport->stats, get_cpu());
  	stats->TxFrames++;
  	stats->TxWords += wlen;
  	put_cpu();
  
  	/* send down to lld */
  	fr_dev(fp) = lport;
  	if (port->fcoe_pending_queue.qlen)
  		fcoe_check_wait_queue(lport, skb);
  	else if (fcoe_start_io(skb))
  		fcoe_check_wait_queue(lport, skb);
  
  	return 0;
  }
  
  /**
   * bnx2fc_rcv - This is bnx2fc's receive function called by NET_RX_SOFTIRQ
   *
   * @skb:	the receive socket buffer
   * @dev:	associated net device
   * @ptype:	context
   * @olddev:	last device
   *
   * This function receives the packet and builds FC frame and passes it up
   */
  static int bnx2fc_rcv(struct sk_buff *skb, struct net_device *dev,
  		struct packet_type *ptype, struct net_device *olddev)
  {
  	struct fc_lport *lport;
  	struct bnx2fc_interface *interface;
  	struct fcoe_ctlr *ctlr;
  	struct fcoe_rcv_info *fr;
  	struct fcoe_percpu_s *bg;
  	struct sk_buff *tmp_skb;
  
  	interface = container_of(ptype, struct bnx2fc_interface,
  				 fcoe_packet_type);
  	ctlr = bnx2fc_to_ctlr(interface);
  	lport = ctlr->lp;
  
  	if (unlikely(lport == NULL)) {
  		printk(KERN_ERR PFX "bnx2fc_rcv: lport is NULL\n");
  		goto err;
  	}
  
  	tmp_skb = skb_share_check(skb, GFP_ATOMIC);
  	if (!tmp_skb)
  		goto err;
  
  	skb = tmp_skb;
  
  	if (unlikely(eth_hdr(skb)->h_proto != htons(ETH_P_FCOE))) {
  		printk(KERN_ERR PFX "bnx2fc_rcv: Wrong FC type frame\n");
  		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));
  
  	fr = fcoe_dev_from_skb(skb);
  	fr->fr_dev = lport;
  
  	bg = &bnx2fc_global;
  	spin_lock(&bg->fcoe_rx_list.lock);
  
  	__skb_queue_tail(&bg->fcoe_rx_list, skb);
  	if (bg->fcoe_rx_list.qlen == 1)
  		wake_up_process(bg->kthread);
  
  	spin_unlock(&bg->fcoe_rx_list.lock);
  
  	return 0;
  err:
  	kfree_skb(skb);
  	return -1;
  }
  
  static int bnx2fc_l2_rcv_thread(void *arg)
  {
  	struct fcoe_percpu_s *bg = arg;
  	struct sk_buff *skb;
  
  	set_user_nice(current, MIN_NICE);
  	set_current_state(TASK_INTERRUPTIBLE);
  	while (!kthread_should_stop()) {
  		schedule();
  		spin_lock_bh(&bg->fcoe_rx_list.lock);
  		while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) {
  			spin_unlock_bh(&bg->fcoe_rx_list.lock);
  			bnx2fc_recv_frame(skb);
  			spin_lock_bh(&bg->fcoe_rx_list.lock);
  		}
  		__set_current_state(TASK_INTERRUPTIBLE);
  		spin_unlock_bh(&bg->fcoe_rx_list.lock);
  	}
  	__set_current_state(TASK_RUNNING);
  	return 0;
  }
  
  
  static void bnx2fc_recv_frame(struct sk_buff *skb)
  {
  	u64 crc_err;
  	u32 fr_len, fr_crc;
  	struct fc_lport *lport;
  	struct fcoe_rcv_info *fr;
  	struct fc_stats *stats;
  	struct fc_frame_header *fh;
  	struct fcoe_crc_eof crc_eof;
  	struct fc_frame *fp;
  	struct fc_lport *vn_port;
  	struct fcoe_port *port, *phys_port;
  	u8 *mac = NULL;
  	u8 *dest_mac = NULL;
  	struct fcoe_hdr *hp;
  	struct bnx2fc_interface *interface;
  	struct fcoe_ctlr *ctlr;
  
  	fr = fcoe_dev_from_skb(skb);
  	lport = fr->fr_dev;
  	if (unlikely(lport == NULL)) {
  		printk(KERN_ERR PFX "Invalid lport struct\n");
  		kfree_skb(skb);
  		return;
  	}
  
  	if (skb_is_nonlinear(skb))
  		skb_linearize(skb);
  	mac = eth_hdr(skb)->h_source;
  	dest_mac = eth_hdr(skb)->h_dest;
  
  	/* Pull the header */
  	hp = (struct fcoe_hdr *) skb_network_header(skb);
  	fh = (struct fc_frame_header *) skb_transport_header(skb);
  	skb_pull(skb, sizeof(struct fcoe_hdr));
  	fr_len = skb->len - sizeof(struct fcoe_crc_eof);
  
  	stats = per_cpu_ptr(lport->stats, get_cpu());
  	stats->RxFrames++;
  	stats->RxWords += fr_len / FCOE_WORD_TO_BYTE;
  	put_cpu();
  
  	fp = (struct fc_frame *)skb;
  	fc_frame_init(fp);
  	fr_dev(fp) = lport;
  	fr_sof(fp) = hp->fcoe_sof;
  	if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
  		kfree_skb(skb);
  		return;
  	}
  	fr_eof(fp) = crc_eof.fcoe_eof;
  	fr_crc(fp) = crc_eof.fcoe_crc32;
  	if (pskb_trim(skb, fr_len)) {
  		kfree_skb(skb);
  		return;
  	}
  
  	phys_port = lport_priv(lport);
  	interface = phys_port->priv;
  	ctlr = bnx2fc_to_ctlr(interface);
  
  	fh = fc_frame_header_get(fp);
  
  	if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) {
  		BNX2FC_HBA_DBG(lport, "FC frame d_id mismatch with MAC %pM.\n",
  		    dest_mac);
  		kfree_skb(skb);
  		return;
  	}
  
  	vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
  	if (vn_port) {
  		port = lport_priv(vn_port);
  		if (!ether_addr_equal(port->data_src_addr, dest_mac)) {
  			BNX2FC_HBA_DBG(lport, "fpma mismatch\n");
  			kfree_skb(skb);
  			return;
  		}
  	}
  	if (ctlr->state) {
  		if (!ether_addr_equal(mac, ctlr->dest_addr)) {
  			BNX2FC_HBA_DBG(lport, "Wrong source address: mac:%pM dest_addr:%pM.\n",
  			    mac, ctlr->dest_addr);
  			kfree_skb(skb);
  			return;
  		}
  	}
  	if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
  	    fh->fh_type == FC_TYPE_FCP) {
  		/* Drop FCP data. We dont this in L2 path */
  		kfree_skb(skb);
  		return;
  	}
  	if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
  	    fh->fh_type == FC_TYPE_ELS) {
  		switch (fc_frame_payload_op(fp)) {
  		case ELS_LOGO:
  			if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
  				/* drop non-FIP LOGO */
  				kfree_skb(skb);
  				return;
  			}
  			break;
  		}
  	}
  
  	if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
  		/* Drop incoming ABTS */
  		kfree_skb(skb);
  		return;
  	}
  
  	/*
  	 * If the destination ID from the frame header does not match what we
  	 * have on record for lport and the search for a NPIV port came up
  	 * empty then this is not addressed to our port so simply drop it.
  	 */
  	if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) {
  		BNX2FC_HBA_DBG(lport, "Dropping frame due to destination mismatch: lport->port_id=%x fh->d_id=%x.\n",
  		    lport->port_id, ntoh24(fh->fh_d_id));
  		kfree_skb(skb);
  		return;
  	}
  
  	fr_crc = le32_to_cpu(fr_crc(fp));
  
  	if (unlikely(fr_crc != ~crc32(~0, skb->data, fr_len))) {
  		stats = per_cpu_ptr(lport->stats, get_cpu());
  		crc_err = (stats->InvalidCRCCount++);
  		put_cpu();
  		if (crc_err < 5)
  			printk(KERN_WARNING PFX "dropping frame with "
  			       "CRC error\n");
  		kfree_skb(skb);
  		return;
  	}
  	fc_exch_recv(lport, fp);
  }
  
  /**
   * bnx2fc_percpu_io_thread - thread per cpu for ios
   *
   * @arg:	ptr to bnx2fc_percpu_info structure
   */
  static int bnx2fc_percpu_io_thread(void *arg)
  {
  	struct bnx2fc_percpu_s *p = arg;
  	struct bnx2fc_work *work, *tmp;
  	LIST_HEAD(work_list);
  
  	set_user_nice(current, MIN_NICE);
  	set_current_state(TASK_INTERRUPTIBLE);
  	while (!kthread_should_stop()) {
  		schedule();
  		spin_lock_bh(&p->fp_work_lock);
  		while (!list_empty(&p->work_list)) {
  			list_splice_init(&p->work_list, &work_list);
  			spin_unlock_bh(&p->fp_work_lock);
  
  			list_for_each_entry_safe(work, tmp, &work_list, list) {
  				list_del_init(&work->list);
  				bnx2fc_process_cq_compl(work->tgt, work->wqe,
  							work->rq_data,
  							work->num_rq,
  							work->task);
  				kfree(work);
  			}
  
  			spin_lock_bh(&p->fp_work_lock);
  		}
  		__set_current_state(TASK_INTERRUPTIBLE);
  		spin_unlock_bh(&p->fp_work_lock);
  	}
  	__set_current_state(TASK_RUNNING);
  
  	return 0;
  }
  
  static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost)
  {
  	struct fc_host_statistics *bnx2fc_stats;
  	struct fc_lport *lport = shost_priv(shost);
  	struct fcoe_port *port = lport_priv(lport);
  	struct bnx2fc_interface *interface = port->priv;
  	struct bnx2fc_hba *hba = interface->hba;
  	struct fcoe_statistics_params *fw_stats;
  	int rc = 0;
  
  	fw_stats = (struct fcoe_statistics_params *)hba->stats_buffer;
  	if (!fw_stats)
  		return NULL;
  
  	mutex_lock(&hba->hba_stats_mutex);
  
  	bnx2fc_stats = fc_get_host_stats(shost);
  
  	init_completion(&hba->stat_req_done);
  	if (bnx2fc_send_stat_req(hba))
  		goto unlock_stats_mutex;
  	rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ));
  	if (!rc) {
  		BNX2FC_HBA_DBG(lport, "FW stat req timed out\n");
  		goto unlock_stats_mutex;
  	}
  	BNX2FC_STATS(hba, rx_stat2, fc_crc_cnt);
  	bnx2fc_stats->invalid_crc_count += hba->bfw_stats.fc_crc_cnt;
  	BNX2FC_STATS(hba, tx_stat, fcoe_tx_pkt_cnt);
  	bnx2fc_stats->tx_frames += hba->bfw_stats.fcoe_tx_pkt_cnt;
  	BNX2FC_STATS(hba, tx_stat, fcoe_tx_byte_cnt);
  	bnx2fc_stats->tx_words += ((hba->bfw_stats.fcoe_tx_byte_cnt) / 4);
  	BNX2FC_STATS(hba, rx_stat0, fcoe_rx_pkt_cnt);
  	bnx2fc_stats->rx_frames += hba->bfw_stats.fcoe_rx_pkt_cnt;
  	BNX2FC_STATS(hba, rx_stat0, fcoe_rx_byte_cnt);
  	bnx2fc_stats->rx_words += ((hba->bfw_stats.fcoe_rx_byte_cnt) / 4);
  
  	bnx2fc_stats->dumped_frames = 0;
  	bnx2fc_stats->lip_count = 0;
  	bnx2fc_stats->nos_count = 0;
  	bnx2fc_stats->loss_of_sync_count = 0;
  	bnx2fc_stats->loss_of_signal_count = 0;
  	bnx2fc_stats->prim_seq_protocol_err_count = 0;
  
  	memcpy(&hba->prev_stats, hba->stats_buffer,
  	       sizeof(struct fcoe_statistics_params));
  
  unlock_stats_mutex:
  	mutex_unlock(&hba->hba_stats_mutex);
  	return bnx2fc_stats;
  }
  
  static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev)
  {
  	struct fcoe_port *port = lport_priv(lport);
  	struct bnx2fc_interface *interface = port->priv;
  	struct bnx2fc_hba *hba = interface->hba;
  	struct Scsi_Host *shost = lport->host;
  	int rc = 0;
  
  	shost->max_cmd_len = BNX2FC_MAX_CMD_LEN;
  	shost->max_lun = bnx2fc_max_luns;
  	shost->max_id = BNX2FC_MAX_FCP_TGT;
  	shost->max_channel = 0;
  	if (lport->vport)
  		shost->transportt = bnx2fc_vport_xport_template;
  	else
  		shost->transportt = bnx2fc_transport_template;
  
  	/* Add the new host to SCSI-ml */
  	rc = scsi_add_host(lport->host, dev);
  	if (rc) {
  		printk(KERN_ERR PFX "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), 256,
  		 "%s (QLogic %s) v%s over %s",
  		BNX2FC_NAME, hba->chip_num, BNX2FC_VERSION,
  		interface->netdev->name);
  
  	return 0;
  }
  
  static int bnx2fc_link_ok(struct fc_lport *lport)
  {
  	struct fcoe_port *port = lport_priv(lport);
  	struct bnx2fc_interface *interface = port->priv;
  	struct bnx2fc_hba *hba = interface->hba;
  	struct net_device *dev = hba->phys_dev;
  	int rc = 0;
  
  	if ((dev->flags & IFF_UP) && netif_carrier_ok(dev))
  		clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
  	else {
  		set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
  		rc = -1;
  	}
  	return rc;
  }
  
  /**
   * bnx2fc_get_link_state - get network link state
   *
   * @hba:	adapter instance pointer
   *
   * updates adapter structure flag based on netdev state
   */
  void bnx2fc_get_link_state(struct bnx2fc_hba *hba)
  {
  	if (test_bit(__LINK_STATE_NOCARRIER, &hba->phys_dev->state))
  		set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
  	else
  		clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
  }
  
  static int bnx2fc_net_config(struct fc_lport *lport, struct net_device *netdev)
  {
  	struct bnx2fc_hba *hba;
  	struct bnx2fc_interface *interface;
  	struct fcoe_ctlr *ctlr;
  	struct fcoe_port *port;
  	u64 wwnn, wwpn;
  
  	port = lport_priv(lport);
  	interface = port->priv;
  	ctlr = bnx2fc_to_ctlr(interface);
  	hba = interface->hba;
  
  	/* require support for get_pauseparam ethtool op. */
  	if (!hba->phys_dev->ethtool_ops ||
  	    !hba->phys_dev->ethtool_ops->get_pauseparam)
  		return -EOPNOTSUPP;
  
  	if (fc_set_mfs(lport, BNX2FC_MFS))
  		return -EINVAL;
  
  	skb_queue_head_init(&port->fcoe_pending_queue);
  	port->fcoe_pending_queue_active = 0;
  	timer_setup(&port->timer, fcoe_queue_timer, 0);
  
  	fcoe_link_speed_update(lport);
  
  	if (!lport->vport) {
  		if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN))
  			wwnn = fcoe_wwn_from_mac(ctlr->ctl_src_addr,
  						 1, 0);
  		BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn);
  		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);
  
  		BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn);
  		fc_set_wwpn(lport, wwpn);
  	}
  
  	return 0;
  }
  
  static void bnx2fc_destroy_timer(struct timer_list *t)
  {
  	struct bnx2fc_hba *hba = from_timer(hba, t, destroy_timer);
  
  	printk(KERN_ERR PFX "ERROR:bnx2fc_destroy_timer - "
  	       "Destroy compl not received!!\n");
  	set_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
  	wake_up_interruptible(&hba->destroy_wait);
  }
  
  /**
   * bnx2fc_indicate_netevent - Generic netdev event handler
   *
   * @context:	adapter structure pointer
   * @event:	event type
   * @vlan_id:	vlan id - associated vlan id with this event
   *
   * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and
   * NETDEV_CHANGE_MTU events. Handle NETDEV_UNREGISTER only for vlans.
   */
  static void bnx2fc_indicate_netevent(void *context, unsigned long event,
  				     u16 vlan_id)
  {
  	struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context;
  	struct fcoe_ctlr_device *cdev;
  	struct fc_lport *lport;
  	struct fc_lport *vport;
  	struct bnx2fc_interface *interface, *tmp;
  	struct fcoe_ctlr *ctlr;
  	int wait_for_upload = 0;
  	u32 link_possible = 1;
  
  	if (vlan_id != 0 && event != NETDEV_UNREGISTER)
  		return;
  
  	switch (event) {
  	case NETDEV_UP:
  		if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state))
  			printk(KERN_ERR "indicate_netevent: "\
  					"hba is not UP!!\n");
  		break;
  
  	case NETDEV_DOWN:
  		clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
  		clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
  		link_possible = 0;
  		break;
  
  	case NETDEV_GOING_DOWN:
  		set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
  		link_possible = 0;
  		break;
  
  	case NETDEV_CHANGE:
  		break;
  
  	case NETDEV_UNREGISTER:
  		if (!vlan_id)
  			return;
  		mutex_lock(&bnx2fc_dev_lock);
  		list_for_each_entry_safe(interface, tmp, &if_list, list) {
  			if (interface->hba == hba &&
  			    interface->vlan_id == (vlan_id & VLAN_VID_MASK))
  				__bnx2fc_destroy(interface);
  		}
  		mutex_unlock(&bnx2fc_dev_lock);
  		return;
  
  	default:
  		return;
  	}
  
  	mutex_lock(&bnx2fc_dev_lock);
  	list_for_each_entry(interface, &if_list, list) {
  
  		if (interface->hba != hba)
  			continue;
  
  		ctlr = bnx2fc_to_ctlr(interface);
  		lport = ctlr->lp;
  		BNX2FC_HBA_DBG(lport, "netevent handler - event=%s %ld\n",
  				interface->netdev->name, event);
  
  		fcoe_link_speed_update(lport);
  
  		cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
  
  		if (link_possible && !bnx2fc_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:
  				/* Reset max recv frame size to default */
  				fc_set_mfs(lport, BNX2FC_MFS);
  				/*
  				 * ctlr link up will only be handled during
  				 * enable to avoid sending discovery
  				 * solicitation on a stale vlan
  				 */
  				if (interface->enabled)
  					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:
  				mutex_lock(&lport->lp_mutex);
  				list_for_each_entry(vport, &lport->vports, list)
  					fc_host_port_type(vport->host) =
  					FC_PORTTYPE_UNKNOWN;
  				mutex_unlock(&lport->lp_mutex);
  				fc_host_port_type(lport->host) =
  					FC_PORTTYPE_UNKNOWN;
  				per_cpu_ptr(lport->stats,
  					    get_cpu())->LinkFailureCount++;
  				put_cpu();
  				fcoe_clean_pending_queue(lport);
  				wait_for_upload = 1;
  			}
  		}
  	}
  	mutex_unlock(&bnx2fc_dev_lock);
  
  	if (wait_for_upload) {
  		clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
  		init_waitqueue_head(&hba->shutdown_wait);
  		BNX2FC_MISC_DBG("indicate_netevent "
  				"num_ofld_sess = %d\n",
  				hba->num_ofld_sess);
  		hba->wait_for_link_down = 1;
  		wait_event_interruptible(hba->shutdown_wait,
  					 (hba->num_ofld_sess == 0));
  		BNX2FC_MISC_DBG("wakeup - num_ofld_sess = %d\n",
  				hba->num_ofld_sess);
  		hba->wait_for_link_down = 0;
  
  		if (signal_pending(current))
  			flush_signals(current);
  	}
  }
  
  static int bnx2fc_libfc_config(struct fc_lport *lport)
  {
  
  	/* Set the function pointers set by bnx2fc driver */
  	memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ,
  		sizeof(struct libfc_function_template));
  	fc_elsct_init(lport);
  	fc_exch_init(lport);
  	fc_disc_init(lport);
  	fc_disc_config(lport, lport);
  	return 0;
  }
  
  static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba)
  {
  	int fcoe_min_xid, fcoe_max_xid;
  
  	fcoe_min_xid = hba->max_xid + 1;
  	if (nr_cpu_ids <= 2)
  		fcoe_max_xid = hba->max_xid + FCOE_XIDS_PER_CPU_OFFSET;
  	else
  		fcoe_max_xid = hba->max_xid + FCOE_MAX_XID_OFFSET;
  	if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, fcoe_min_xid,
  			       fcoe_max_xid, NULL)) {
  		printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n");
  		return -ENOMEM;
  	}
  
  	return 0;
  }
  
  static int bnx2fc_lport_config(struct fc_lport *lport)
  {
  	lport->link_up = 0;
  	lport->qfull = 0;
  	lport->max_retry_count = BNX2FC_MAX_RETRY_CNT;
  	lport->max_rport_retry_count = BNX2FC_MAX_RPORT_RETRY_CNT;
  	lport->e_d_tov = 2 * 1000;
  	lport->r_a_tov = 10 * 1000;
  
  	lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
  				FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
  	lport->does_npiv = 1;
  
  	memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen));
  	lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA;
  
  	/* alloc stats structure */
  	if (fc_lport_init_stats(lport))
  		return -ENOMEM;
  
  	/* Finish fc_lport configuration */
  	fc_lport_config(lport);
  
  	return 0;
  }
  
  /**
   * bnx2fc_fip_recv - handle a received FIP frame.
   *
   * @skb: the received skb
   * @dev: associated &net_device
   * @ptype: the &packet_type structure which was used to register this handler.
   * @orig_dev: original receive &net_device, in case @ dev is a bond.
   *
   * Returns: 0 for success
   */
  static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev,
  			   struct packet_type *ptype,
  			   struct net_device *orig_dev)
  {
  	struct bnx2fc_interface *interface;
  	struct fcoe_ctlr *ctlr;
  	interface = container_of(ptype, struct bnx2fc_interface,
  				 fip_packet_type);
  	ctlr = bnx2fc_to_ctlr(interface);
  	fcoe_ctlr_recv(ctlr, skb);
  	return 0;
  }
  
  /**
   * bnx2fc_update_src_mac - Update Ethernet MAC filters.
   *
   * @lport: The local port
   * @addr: Location of data to copy
   *
   * Remove any previously-set unicast MAC filter.
   * Add secondary FCoE MAC address filter for our OUI.
   */
  static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr)
  {
  	struct fcoe_port *port = lport_priv(lport);
  
  	memcpy(port->data_src_addr, addr, ETH_ALEN);
  }
  
  /**
   * bnx2fc_get_src_mac - return the ethernet source address for an lport
   *
   * @lport: libfc port
   */
  static u8 *bnx2fc_get_src_mac(struct fc_lport *lport)
  {
  	struct fcoe_port *port;
  
  	port = (struct fcoe_port *)lport_priv(lport);
  	return port->data_src_addr;
  }
  
  /**
   * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame.
   *
   * @fip: FCoE controller.
   * @skb: FIP Packet.
   */
  static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
  {
  	struct fip_header *fiph;
  	struct ethhdr *eth_hdr;
  	u16 op;
  	u8 sub;
  
  	fiph = (struct fip_header *) ((void *)skb->data + 2 * ETH_ALEN + 2);
  	eth_hdr = (struct ethhdr *)skb_mac_header(skb);
  	op = ntohs(fiph->fip_op);
  	sub = fiph->fip_subcode;
  
  	if (op == FIP_OP_CTRL && sub == FIP_SC_SOL && bnx2fc_log_fka)
  		BNX2FC_MISC_DBG("Sending FKA from %pM to %pM.\n",
  		    eth_hdr->h_source, eth_hdr->h_dest);
  
  	skb->dev = bnx2fc_from_ctlr(fip)->netdev;
  	dev_queue_xmit(skb);
  }
  
  static int bnx2fc_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 bnx2fc_interface *interface = port->priv;
  	struct net_device *netdev = interface->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 PFX "Failed to create vport, "
  		       "WWPN (0x%s) already exists\n",
  		       buf);
  		return rc;
  	}
  
  	if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
  		printk(KERN_ERR PFX "vn ports cannot be created on"
  			"this interface\n");
  		return -EIO;
  	}
  	rtnl_lock();
  	mutex_lock(&bnx2fc_dev_lock);
  	vn_port = bnx2fc_if_create(interface, &vport->dev, 1);
  	mutex_unlock(&bnx2fc_dev_lock);
  	rtnl_unlock();
  
  	if (!vn_port) {
  		printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n",
  			netdev->name);
  		return -EIO;
  	}
  
  	if (bnx2fc_devloss_tmo)
  		fc_host_dev_loss_tmo(vn_port->host) = bnx2fc_devloss_tmo;
  
  	if (disabled) {
  		fc_vport_set_state(vport, FC_VPORT_DISABLED);
  	} else {
  		vn_port->boot_time = jiffies;
  		fc_lport_init(vn_port);
  		fc_fabric_login(vn_port);
  		fc_vport_setlink(vn_port);
  	}
  	return 0;
  }
  
  static void bnx2fc_free_vport(struct bnx2fc_hba *hba, struct fc_lport *lport)
  {
  	struct bnx2fc_lport *blport, *tmp;
  
  	spin_lock_bh(&hba->hba_lock);
  	list_for_each_entry_safe(blport, tmp, &hba->vports, list) {
  		if (blport->lport == lport) {
  			list_del(&blport->list);
  			kfree(blport);
  		}
  	}
  	spin_unlock_bh(&hba->hba_lock);
  }
  
  static int bnx2fc_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;
  	struct fcoe_port *port = lport_priv(vn_port);
  	struct bnx2fc_interface *interface = port->priv;
  	struct fc_lport *v_port;
  	bool found = false;
  
  	mutex_lock(&n_port->lp_mutex);
  	list_for_each_entry(v_port, &n_port->vports, list)
  		if (v_port->vport == vport) {
  			found = true;
  			break;
  		}
  
  	if (!found) {
  		mutex_unlock(&n_port->lp_mutex);
  		return -ENOENT;
  	}
  	list_del(&vn_port->list);
  	mutex_unlock(&n_port->lp_mutex);
  	bnx2fc_free_vport(interface->hba, port->lport);
  	bnx2fc_port_shutdown(port->lport);
  	bnx2fc_port_destroy(port);
  	bnx2fc_interface_put(interface);
  	return 0;
  }
  
  static int bnx2fc_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;
  }
  
  
  static int bnx2fc_interface_setup(struct bnx2fc_interface *interface)
  {
  	struct net_device *netdev = interface->netdev;
  	struct net_device *physdev = interface->hba->phys_dev;
  	struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
  	struct netdev_hw_addr *ha;
  	int sel_san_mac = 0;
  
  	/* setup Source MAC Address */
  	rcu_read_lock();
  	for_each_dev_addr(physdev, ha) {
  		BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ",
  				ha->type);
  		printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0],
  				ha->addr[1], ha->addr[2], ha->addr[3],
  				ha->addr[4], ha->addr[5]);
  
  		if ((ha->type == NETDEV_HW_ADDR_T_SAN) &&
  		    (is_valid_ether_addr(ha->addr))) {
  			memcpy(ctlr->ctl_src_addr, ha->addr,
  			       ETH_ALEN);
  			sel_san_mac = 1;
  			BNX2FC_MISC_DBG("Found SAN MAC\n");
  		}
  	}
  	rcu_read_unlock();
  
  	if (!sel_san_mac)
  		return -ENODEV;
  
  	interface->fip_packet_type.func = bnx2fc_fip_recv;
  	interface->fip_packet_type.type = htons(ETH_P_FIP);
  	interface->fip_packet_type.dev = netdev;
  	dev_add_pack(&interface->fip_packet_type);
  
  	interface->fcoe_packet_type.func = bnx2fc_rcv;
  	interface->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE);
  	interface->fcoe_packet_type.dev = netdev;
  	dev_add_pack(&interface->fcoe_packet_type);
  
  	return 0;
  }
  
  static int bnx2fc_attach_transport(void)
  {
  	bnx2fc_transport_template =
  		fc_attach_transport(&bnx2fc_transport_function);
  
  	if (bnx2fc_transport_template == NULL) {
  		printk(KERN_ERR PFX "Failed to attach FC transport\n");
  		return -ENODEV;
  	}
  
  	bnx2fc_vport_xport_template =
  		fc_attach_transport(&bnx2fc_vport_xport_function);
  	if (bnx2fc_vport_xport_template == NULL) {
  		printk(KERN_ERR PFX
  		       "Failed to attach FC transport for vport\n");
  		fc_release_transport(bnx2fc_transport_template);
  		bnx2fc_transport_template = NULL;
  		return -ENODEV;
  	}
  	return 0;
  }
  static void bnx2fc_release_transport(void)
  {
  	fc_release_transport(bnx2fc_transport_template);
  	fc_release_transport(bnx2fc_vport_xport_template);
  	bnx2fc_transport_template = NULL;
  	bnx2fc_vport_xport_template = NULL;
  }
  
  static void bnx2fc_interface_release(struct kref *kref)
  {
  	struct fcoe_ctlr_device *ctlr_dev;
  	struct bnx2fc_interface *interface;
  	struct fcoe_ctlr *ctlr;
  	struct net_device *netdev;
  
  	interface = container_of(kref, struct bnx2fc_interface, kref);
  	BNX2FC_MISC_DBG("Interface is being released\n");
  
  	ctlr = bnx2fc_to_ctlr(interface);
  	ctlr_dev = fcoe_ctlr_to_ctlr_dev(ctlr);
  	netdev = interface->netdev;
  
  	/* tear-down FIP controller */
  	if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags))
  		fcoe_ctlr_destroy(ctlr);
  
  	fcoe_ctlr_device_delete(ctlr_dev);
  
  	dev_put(netdev);
  	module_put(THIS_MODULE);
  }
  
  static inline void bnx2fc_interface_get(struct bnx2fc_interface *interface)
  {
  	kref_get(&interface->kref);
  }
  
  static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface)
  {
  	kref_put(&interface->kref, bnx2fc_interface_release);
  }
  static void bnx2fc_hba_destroy(struct bnx2fc_hba *hba)
  {
  	/* Free the command manager */
  	if (hba->cmd_mgr) {
  		bnx2fc_cmd_mgr_free(hba->cmd_mgr);
  		hba->cmd_mgr = NULL;
  	}
  	kfree(hba->tgt_ofld_list);
  	bnx2fc_unbind_pcidev(hba);
  	kfree(hba);
  }
  
  /**
   * bnx2fc_hba_create - create a new bnx2fc hba
   *
   * @cnic:	pointer to cnic device
   *
   * Creates a new FCoE hba on the given device.
   *
   */
  static struct bnx2fc_hba *bnx2fc_hba_create(struct cnic_dev *cnic)
  {
  	struct bnx2fc_hba *hba;
  	struct fcoe_capabilities *fcoe_cap;
  	int rc;
  
  	hba = kzalloc(sizeof(*hba), GFP_KERNEL);
  	if (!hba) {
  		printk(KERN_ERR PFX "Unable to allocate hba structure\n");
  		return NULL;
  	}
  	spin_lock_init(&hba->hba_lock);
  	mutex_init(&hba->hba_mutex);
  	mutex_init(&hba->hba_stats_mutex);
  
  	hba->cnic = cnic;
  
  	hba->max_tasks = cnic->max_fcoe_exchanges;
  	hba->elstm_xids = (hba->max_tasks / 2);
  	hba->max_outstanding_cmds = hba->elstm_xids;
  	hba->max_xid = (hba->max_tasks - 1);
  
  	rc = bnx2fc_bind_pcidev(hba);
  	if (rc) {
  		printk(KERN_ERR PFX "create_adapter:  bind error\n");
  		goto bind_err;
  	}
  	hba->phys_dev = cnic->netdev;
  	hba->next_conn_id = 0;
  
  	hba->tgt_ofld_list =
  		kcalloc(BNX2FC_NUM_MAX_SESS, sizeof(struct bnx2fc_rport *),
  			GFP_KERNEL);
  	if (!hba->tgt_ofld_list) {
  		printk(KERN_ERR PFX "Unable to allocate tgt offload list\n");
  		goto tgtofld_err;
  	}
  
  	hba->num_ofld_sess = 0;
  
  	hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba);
  	if (!hba->cmd_mgr) {
  		printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n");
  		goto cmgr_err;
  	}
  	fcoe_cap = &hba->fcoe_cap;
  
  	fcoe_cap->capability1 = BNX2FC_TM_MAX_SQES <<
  					FCOE_IOS_PER_CONNECTION_SHIFT;
  	fcoe_cap->capability1 |= BNX2FC_NUM_MAX_SESS <<
  					FCOE_LOGINS_PER_PORT_SHIFT;
  	fcoe_cap->capability2 = hba->max_outstanding_cmds <<
  					FCOE_NUMBER_OF_EXCHANGES_SHIFT;
  	fcoe_cap->capability2 |= BNX2FC_MAX_NPIV <<
  					FCOE_NPIV_WWN_PER_PORT_SHIFT;
  	fcoe_cap->capability3 = BNX2FC_NUM_MAX_SESS <<
  					FCOE_TARGETS_SUPPORTED_SHIFT;
  	fcoe_cap->capability3 |= hba->max_outstanding_cmds <<
  					FCOE_OUTSTANDING_COMMANDS_SHIFT;
  	fcoe_cap->capability4 = FCOE_CAPABILITY4_STATEFUL;
  
  	init_waitqueue_head(&hba->shutdown_wait);
  	init_waitqueue_head(&hba->destroy_wait);
  	INIT_LIST_HEAD(&hba->vports);
  
  	return hba;
  
  cmgr_err:
  	kfree(hba->tgt_ofld_list);
  tgtofld_err:
  	bnx2fc_unbind_pcidev(hba);
  bind_err:
  	kfree(hba);
  	return NULL;
  }
  
  static struct bnx2fc_interface *
  bnx2fc_interface_create(struct bnx2fc_hba *hba,
  			struct net_device *netdev,
  			enum fip_mode fip_mode)
  {
  	struct fcoe_ctlr_device *ctlr_dev;
  	struct bnx2fc_interface *interface;
  	struct fcoe_ctlr *ctlr;
  	int size;
  	int rc = 0;
  
  	size = (sizeof(*interface) + sizeof(struct fcoe_ctlr));
  	ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &bnx2fc_fcoe_sysfs_templ,
  					 size);
  	if (!ctlr_dev) {
  		printk(KERN_ERR PFX "Unable to allocate interface structure\n");
  		return NULL;
  	}
  	ctlr = fcoe_ctlr_device_priv(ctlr_dev);
  	ctlr->cdev = ctlr_dev;
  	interface = fcoe_ctlr_priv(ctlr);
  	dev_hold(netdev);
  	kref_init(&interface->kref);
  	interface->hba = hba;
  	interface->netdev = netdev;
  
  	/* Initialize FIP */
  	fcoe_ctlr_init(ctlr, fip_mode);
  	ctlr->send = bnx2fc_fip_send;
  	ctlr->update_mac = bnx2fc_update_src_mac;
  	ctlr->get_src_addr = bnx2fc_get_src_mac;
  	set_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags);
  
  	rc = bnx2fc_interface_setup(interface);
  	if (!rc)
  		return interface;
  
  	fcoe_ctlr_destroy(ctlr);
  	dev_put(netdev);
  	fcoe_ctlr_device_delete(ctlr_dev);
  	return NULL;
  }
  
  /**
   * bnx2fc_if_create - Create FCoE instance on a given interface
   *
   * @interface:	FCoE interface to create a local port on
   * @parent:	Device pointer to be the parent in sysfs for the SCSI host
   * @npiv:	Indicates if the port is vport or not
   *
   * Creates a fc_lport instance and a Scsi_Host instance and configure them.
   *
   * Returns:	Allocated fc_lport or an error pointer
   */
  static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
  				  struct device *parent, int npiv)
  {
  	struct fcoe_ctlr        *ctlr = bnx2fc_to_ctlr(interface);
  	struct fc_lport		*lport, *n_port;
  	struct fcoe_port	*port;
  	struct Scsi_Host	*shost;
  	struct fc_vport		*vport = dev_to_vport(parent);
  	struct bnx2fc_lport	*blport;
  	struct bnx2fc_hba	*hba = interface->hba;
  	int			rc = 0;
  
  	blport = kzalloc(sizeof(struct bnx2fc_lport), GFP_KERNEL);
  	if (!blport) {
  		BNX2FC_HBA_DBG(ctlr->lp, "Unable to alloc blport\n");
  		return NULL;
  	}
  
  	/* Allocate Scsi_Host structure */
  	bnx2fc_shost_template.can_queue = hba->max_outstanding_cmds;
  	if (!npiv)
  		lport = libfc_host_alloc(&bnx2fc_shost_template, sizeof(*port));
  	else
  		lport = libfc_vport_create(vport, sizeof(*port));
  
  	if (!lport) {
  		printk(KERN_ERR PFX "could not allocate scsi host structure\n");
  		goto free_blport;
  	}
  	shost = lport->host;
  	port = lport_priv(lport);
  	port->lport = lport;
  	port->priv = interface;
  	port->get_netdev = bnx2fc_netdev;
  
  	/* Configure fcoe_port */
  	rc = bnx2fc_lport_config(lport);
  	if (rc)
  		goto lp_config_err;
  
  	if (npiv) {
  		printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n",
  			vport->node_name, vport->port_name);
  		fc_set_wwnn(lport, vport->node_name);
  		fc_set_wwpn(lport, vport->port_name);
  	}
  	/* Configure netdev and networking properties of the lport */
  	rc = bnx2fc_net_config(lport, interface->netdev);
  	if (rc) {
  		printk(KERN_ERR PFX "Error on bnx2fc_net_config\n");
  		goto lp_config_err;
  	}
  
  	rc = bnx2fc_shost_config(lport, parent);
  	if (rc) {
  		printk(KERN_ERR PFX "Couldn't configure shost for %s\n",
  			interface->netdev->name);
  		goto lp_config_err;
  	}
  
  	/* Initialize the libfc library */
  	rc = bnx2fc_libfc_config(lport);
  	if (rc) {
  		printk(KERN_ERR PFX "Couldn't configure libfc\n");
  		goto shost_err;
  	}
  	fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
  
  	if (bnx2fc_devloss_tmo)
  		fc_host_dev_loss_tmo(shost) = bnx2fc_devloss_tmo;
  
  	/* Allocate exchange manager */
  	if (!npiv)
  		rc = bnx2fc_em_config(lport, hba);
  	else {
  		shost = vport_to_shost(vport);
  		n_port = shost_priv(shost);
  		rc = fc_exch_mgr_list_clone(n_port, lport);
  	}
  
  	if (rc) {
  		printk(KERN_ERR PFX "Error on bnx2fc_em_config\n");
  		goto shost_err;
  	}
  
  	bnx2fc_interface_get(interface);
  
  	spin_lock_bh(&hba->hba_lock);
  	blport->lport = lport;
  	list_add_tail(&blport->list, &hba->vports);
  	spin_unlock_bh(&hba->hba_lock);
  
  	return lport;
  
  shost_err:
  	scsi_remove_host(shost);
  lp_config_err:
  	scsi_host_put(lport->host);
  free_blport:
  	kfree(blport);
  	return NULL;
  }
  
  static void bnx2fc_net_cleanup(struct bnx2fc_interface *interface)
  {
  	/* Dont listen for Ethernet packets anymore */
  	__dev_remove_pack(&interface->fcoe_packet_type);
  	__dev_remove_pack(&interface->fip_packet_type);
  	synchronize_net();
  }
  
  static void bnx2fc_interface_cleanup(struct bnx2fc_interface *interface)
  {
  	struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
  	struct fc_lport *lport = ctlr->lp;
  	struct fcoe_port *port = lport_priv(lport);
  	struct bnx2fc_hba *hba = interface->hba;
  
  	/* Stop the transmit retry timer */
  	del_timer_sync(&port->timer);
  
  	/* Free existing transmit skbs */
  	fcoe_clean_pending_queue(lport);
  
  	bnx2fc_net_cleanup(interface);
  
  	bnx2fc_free_vport(hba, lport);
  }
  
  static void bnx2fc_if_destroy(struct fc_lport *lport)
  {
  
  	/* Free queued packets for the receive thread */
  	bnx2fc_clean_rx_queue(lport);
  
  	/* Detach from scsi-ml */
  	fc_remove_host(lport->host);
  	scsi_remove_host(lport->host);
  
  	/*
  	 * Note that only the physical lport will have the exchange manager.
  	 * for vports, this function is NOP
  	 */
  	fc_exch_mgr_free(lport);
  
  	/* Free memory used by statistical counters */
  	fc_lport_free_stats(lport);
  
  	/* Release Scsi_Host */
  	scsi_host_put(lport->host);
  }
  
  static void __bnx2fc_destroy(struct bnx2fc_interface *interface)
  {
  	struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
  	struct fc_lport *lport = ctlr->lp;
  	struct fcoe_port *port = lport_priv(lport);
  
  	bnx2fc_interface_cleanup(interface);
  	bnx2fc_stop(interface);
  	list_del(&interface->list);
  	bnx2fc_port_destroy(port);
  	bnx2fc_interface_put(interface);
  }
  
  /**
   * bnx2fc_destroy - Destroy a bnx2fc FCoE interface
   *
   * @netdev: The net device that the FCoE interface is on
   *
   * Called from sysfs.
   *
   * Returns: 0 for success
   */
  static int bnx2fc_destroy(struct net_device *netdev)
  {
  	struct bnx2fc_interface *interface = NULL;
  	struct workqueue_struct *timer_work_queue;
  	struct fcoe_ctlr *ctlr;
  	int rc = 0;
  
  	rtnl_lock();
  	mutex_lock(&bnx2fc_dev_lock);
  
  	interface = bnx2fc_interface_lookup(netdev);
  	ctlr = bnx2fc_to_ctlr(interface);
  	if (!interface || !ctlr->lp) {
  		rc = -ENODEV;
  		printk(KERN_ERR PFX "bnx2fc_destroy: interface or lport not found\n");
  		goto netdev_err;
  	}
  
  	timer_work_queue = interface->timer_work_queue;
  	__bnx2fc_destroy(interface);
  	destroy_workqueue(timer_work_queue);
  
  netdev_err:
  	mutex_unlock(&bnx2fc_dev_lock);
  	rtnl_unlock();
  	return rc;
  }
  
  static void bnx2fc_port_destroy(struct fcoe_port *port)
  {
  	struct fc_lport *lport;
  
  	lport = port->lport;
  	BNX2FC_HBA_DBG(lport, "Entered %s, destroying lport %p\n", __func__, lport);
  
  	bnx2fc_if_destroy(lport);
  }
  
  static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba)
  {
  	bnx2fc_free_fw_resc(hba);
  	bnx2fc_free_task_ctx(hba);
  }
  
  /**
   * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated
   *			pci structure
   *
   * @hba:		Adapter instance
   */
  static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba)
  {
  	if (bnx2fc_setup_task_ctx(hba))
  		goto mem_err;
  
  	if (bnx2fc_setup_fw_resc(hba))
  		goto mem_err;
  
  	return 0;
  mem_err:
  	bnx2fc_unbind_adapter_devices(hba);
  	return -ENOMEM;
  }
  
  static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba)
  {
  	struct cnic_dev *cnic;
  	struct pci_dev *pdev;
  
  	if (!hba->cnic) {
  		printk(KERN_ERR PFX "cnic is NULL\n");
  		return -ENODEV;
  	}
  	cnic = hba->cnic;
  	pdev = hba->pcidev = cnic->pcidev;
  	if (!hba->pcidev)
  		return -ENODEV;
  
  	switch (pdev->device) {
  	case PCI_DEVICE_ID_NX2_57710:
  		strncpy(hba->chip_num, "BCM57710", BCM_CHIP_LEN);
  		break;
  	case PCI_DEVICE_ID_NX2_57711:
  		strncpy(hba->chip_num, "BCM57711", BCM_CHIP_LEN);
  		break;
  	case PCI_DEVICE_ID_NX2_57712:
  	case PCI_DEVICE_ID_NX2_57712_MF:
  	case PCI_DEVICE_ID_NX2_57712_VF:
  		strncpy(hba->chip_num, "BCM57712", BCM_CHIP_LEN);
  		break;
  	case PCI_DEVICE_ID_NX2_57800:
  	case PCI_DEVICE_ID_NX2_57800_MF:
  	case PCI_DEVICE_ID_NX2_57800_VF:
  		strncpy(hba->chip_num, "BCM57800", BCM_CHIP_LEN);
  		break;
  	case PCI_DEVICE_ID_NX2_57810:
  	case PCI_DEVICE_ID_NX2_57810_MF:
  	case PCI_DEVICE_ID_NX2_57810_VF:
  		strncpy(hba->chip_num, "BCM57810", BCM_CHIP_LEN);
  		break;
  	case PCI_DEVICE_ID_NX2_57840:
  	case PCI_DEVICE_ID_NX2_57840_MF:
  	case PCI_DEVICE_ID_NX2_57840_VF:
  	case PCI_DEVICE_ID_NX2_57840_2_20:
  	case PCI_DEVICE_ID_NX2_57840_4_10:
  		strncpy(hba->chip_num, "BCM57840", BCM_CHIP_LEN);
  		break;
  	default:
  		pr_err(PFX "Unknown device id 0x%x\n", pdev->device);
  		break;
  	}
  	pci_dev_get(hba->pcidev);
  	return 0;
  }
  
  static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba)
  {
  	if (hba->pcidev) {
  		hba->chip_num[0] = '\0';
  		pci_dev_put(hba->pcidev);
  	}
  	hba->pcidev = NULL;
  }
  
  /**
   * bnx2fc_ulp_get_stats - cnic callback to populate FCoE stats
   *
   * @handle:    transport handle pointing to adapter structure
   */
  static int bnx2fc_ulp_get_stats(void *handle)
  {
  	struct bnx2fc_hba *hba = handle;
  	struct cnic_dev *cnic;
  	struct fcoe_stats_info *stats_addr;
  
  	if (!hba)
  		return -EINVAL;
  
  	cnic = hba->cnic;
  	stats_addr = &cnic->stats_addr->fcoe_stat;
  	if (!stats_addr)
  		return -EINVAL;
  
  	strncpy(stats_addr->version, BNX2FC_VERSION,
  		sizeof(stats_addr->version));
  	stats_addr->txq_size = BNX2FC_SQ_WQES_MAX;
  	stats_addr->rxq_size = BNX2FC_CQ_WQES_MAX;
  
  	return 0;
  }
  
  
  /**
   * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance
   *
   * @handle:	transport handle pointing to adapter structure
   *
   * This function maps adapter structure to pcidev structure and initiates
   *	firmware handshake to enable/initialize on-chip FCoE components.
   *	This bnx2fc - cnic interface api callback is used after following
   *	conditions are met -
   *	a) underlying network interface is up (marked by event NETDEV_UP
   *		from netdev
   *	b) bnx2fc adatper structure is registered.
   */
  static void bnx2fc_ulp_start(void *handle)
  {
  	struct bnx2fc_hba *hba = handle;
  	struct bnx2fc_interface *interface;
  	struct fcoe_ctlr *ctlr;
  	struct fc_lport *lport;
  
  	mutex_lock(&bnx2fc_dev_lock);
  
  	if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
  		bnx2fc_fw_init(hba);
  
  	BNX2FC_MISC_DBG("bnx2fc started.\n");
  
  	list_for_each_entry(interface, &if_list, list) {
  		if (interface->hba == hba) {
  			ctlr = bnx2fc_to_ctlr(interface);
  			lport = ctlr->lp;
  			/* Kick off Fabric discovery*/
  			printk(KERN_ERR PFX "ulp_init: start discovery\n");
  			lport->tt.frame_send = bnx2fc_xmit;
  			bnx2fc_start_disc(interface);
  		}
  	}
  
  	mutex_unlock(&bnx2fc_dev_lock);
  }
  
  static void bnx2fc_port_shutdown(struct fc_lport *lport)
  {
  	BNX2FC_MISC_DBG("Entered %s\n", __func__);
  	fc_fabric_logoff(lport);
  	fc_lport_destroy(lport);
  }
  
  static void bnx2fc_stop(struct bnx2fc_interface *interface)
  {
  	struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
  	struct fc_lport *lport;
  	struct fc_lport *vport;
  
  	if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags))
  		return;
  
  	lport = ctlr->lp;
  	bnx2fc_port_shutdown(lport);
  
  	mutex_lock(&lport->lp_mutex);
  	list_for_each_entry(vport, &lport->vports, list)
  		fc_host_port_type(vport->host) =
  					FC_PORTTYPE_UNKNOWN;
  	mutex_unlock(&lport->lp_mutex);
  	fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
  	fcoe_ctlr_link_down(ctlr);
  	fcoe_clean_pending_queue(lport);
  }
  
  static int bnx2fc_fw_init(struct bnx2fc_hba *hba)
  {
  #define BNX2FC_INIT_POLL_TIME		(1000 / HZ)
  	int rc = -1;
  	int i = HZ;
  
  	rc = bnx2fc_bind_adapter_devices(hba);
  	if (rc) {
  		printk(KERN_ALERT PFX
  			"bnx2fc_bind_adapter_devices failed - rc = %d\n", rc);
  		goto err_out;
  	}
  
  	rc = bnx2fc_send_fw_fcoe_init_msg(hba);
  	if (rc) {
  		printk(KERN_ALERT PFX
  			"bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc);
  		goto err_unbind;
  	}
  
  	/*
  	 * Wait until the adapter init message is complete, and adapter
  	 * state is UP.
  	 */
  	while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--)
  		msleep(BNX2FC_INIT_POLL_TIME);
  
  	if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) {
  		printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize.  "
  				"Ignoring...\n",
  				hba->cnic->netdev->name);
  		rc = -1;
  		goto err_unbind;
  	}
  
  
  	set_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags);
  	return 0;
  
  err_unbind:
  	bnx2fc_unbind_adapter_devices(hba);
  err_out:
  	return rc;
  }
  
  static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba)
  {
  	if (test_and_clear_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) {
  		if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) {
  			timer_setup(&hba->destroy_timer, bnx2fc_destroy_timer,
  				    0);
  			hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT +
  								jiffies;
  			add_timer(&hba->destroy_timer);
  			wait_event_interruptible(hba->destroy_wait,
  					test_bit(BNX2FC_FLAG_DESTROY_CMPL,
  						 &hba->flags));
  			clear_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags);
  			/* This should never happen */
  			if (signal_pending(current))
  				flush_signals(current);
  
  			del_timer_sync(&hba->destroy_timer);
  		}
  		bnx2fc_unbind_adapter_devices(hba);
  	}
  }
  
  /**
   * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance
   *
   * @handle:	transport handle pointing to adapter structure
   *
   * Driver checks if adapter is already in shutdown mode, if not start
   *	the shutdown process.
   */
  static void bnx2fc_ulp_stop(void *handle)
  {
  	struct bnx2fc_hba *hba = handle;
  	struct bnx2fc_interface *interface;
  
  	printk(KERN_ERR "ULP_STOP\n");
  
  	mutex_lock(&bnx2fc_dev_lock);
  	if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags))
  		goto exit;
  	list_for_each_entry(interface, &if_list, list) {
  		if (interface->hba == hba)
  			bnx2fc_stop(interface);
  	}
  	BUG_ON(hba->num_ofld_sess != 0);
  
  	mutex_lock(&hba->hba_mutex);
  	clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
  	clear_bit(ADAPTER_STATE_GOING_DOWN,
  		  &hba->adapter_state);
  
  	clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
  	mutex_unlock(&hba->hba_mutex);
  
  	bnx2fc_fw_destroy(hba);
  exit:
  	mutex_unlock(&bnx2fc_dev_lock);
  }
  
  static void bnx2fc_start_disc(struct bnx2fc_interface *interface)
  {
  	struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface);
  	struct fc_lport *lport;
  	int wait_cnt = 0;
  
  	BNX2FC_MISC_DBG("Entered %s\n", __func__);
  	/* Kick off FIP/FLOGI */
  	if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) {
  		printk(KERN_ERR PFX "Init not done yet\n");
  		return;
  	}
  
  	lport = ctlr->lp;
  	BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n");
  
  	if (!bnx2fc_link_ok(lport) && interface->enabled) {
  		BNX2FC_HBA_DBG(lport, "ctlr_link_up\n");
  		fcoe_ctlr_link_up(ctlr);
  		fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
  		set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
  	}
  
  	/* wait for the FCF to be selected before issuing FLOGI */
  	while (!ctlr->sel_fcf) {
  		msleep(250);
  		/* give up after 3 secs */
  		if (++wait_cnt > 12)
  			break;
  	}
  
  	/* Reset max receive frame size to default */
  	if (fc_set_mfs(lport, BNX2FC_MFS))
  		return;
  
  	fc_lport_init(lport);
  	fc_fabric_login(lport);
  }
  
  
  /**
   * bnx2fc_ulp_init - Initialize an adapter instance
   *
   * @dev :	cnic device handle
   * Called from cnic_register_driver() context to initialize all
   *	enumerated cnic devices. This routine allocates adapter structure
   *	and other device specific resources.
   */
  static void bnx2fc_ulp_init(struct cnic_dev *dev)
  {
  	struct bnx2fc_hba *hba;
  	int rc = 0;
  
  	BNX2FC_MISC_DBG("Entered %s\n", __func__);
  	/* bnx2fc works only when bnx2x is loaded */
  	if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) ||
  	    (dev->max_fcoe_conn == 0)) {
  		printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s,"
  				    " flags: %lx fcoe_conn: %d\n",
  			dev->netdev->name, dev->flags, dev->max_fcoe_conn);
  		return;
  	}
  
  	hba = bnx2fc_hba_create(dev);
  	if (!hba) {
  		printk(KERN_ERR PFX "hba initialization failed\n");
  		return;
  	}
  
  	pr_info(PFX "FCoE initialized for %s.\n", dev->netdev->name);
  
  	/* Add HBA to the adapter list */
  	mutex_lock(&bnx2fc_dev_lock);
  	list_add_tail(&hba->list, &adapter_list);
  	adapter_count++;
  	mutex_unlock(&bnx2fc_dev_lock);
  
  	dev->fcoe_cap = &hba->fcoe_cap;
  	clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
  	rc = dev->register_device(dev, CNIC_ULP_FCOE,
  						(void *) hba);
  	if (rc)
  		printk(KERN_ERR PFX "register_device failed, rc = %d\n", rc);
  	else
  		set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
  }
  
  /* Assumes rtnl_lock and the bnx2fc_dev_lock are already taken */
  static int __bnx2fc_disable(struct fcoe_ctlr *ctlr)
  {
  	struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr);
  
  	if (interface->enabled) {
  		if (!ctlr->lp) {
  			pr_err(PFX "__bnx2fc_disable: lport not found\n");
  			return -ENODEV;
  		} else {
  			interface->enabled = false;
  			fcoe_ctlr_link_down(ctlr);
  			fcoe_clean_pending_queue(ctlr->lp);
  		}
  	}
  	return 0;
  }
  
  /*
   * Deperecated: Use bnx2fc_enabled()
   */
  static int bnx2fc_disable(struct net_device *netdev)
  {
  	struct bnx2fc_interface *interface;
  	struct fcoe_ctlr *ctlr;
  	int rc = 0;
  
  	rtnl_lock();
  	mutex_lock(&bnx2fc_dev_lock);
  
  	interface = bnx2fc_interface_lookup(netdev);
  	ctlr = bnx2fc_to_ctlr(interface);
  
  	if (!interface) {
  		rc = -ENODEV;
  		pr_err(PFX "bnx2fc_disable: interface not found\n");
  	} else {
  		rc = __bnx2fc_disable(ctlr);
  	}
  	mutex_unlock(&bnx2fc_dev_lock);
  	rtnl_unlock();
  	return rc;
  }
  
  static uint bnx2fc_npiv_create_vports(struct fc_lport *lport,
  				      struct cnic_fc_npiv_tbl *npiv_tbl)
  {
  	struct fc_vport_identifiers vpid;
  	uint i, created = 0;
  	u64 wwnn = 0;
  	char wwpn_str[32];
  	char wwnn_str[32];
  
  	if (npiv_tbl->count > MAX_NPIV_ENTRIES) {
  		BNX2FC_HBA_DBG(lport, "Exceeded count max of npiv table\n");
  		goto done;
  	}
  
  	/* Sanity check the first entry to make sure it's not 0 */
  	if (wwn_to_u64(npiv_tbl->wwnn[0]) == 0 &&
  	    wwn_to_u64(npiv_tbl->wwpn[0]) == 0) {
  		BNX2FC_HBA_DBG(lport, "First NPIV table entries invalid.\n");
  		goto done;
  	}
  
  	vpid.roles = FC_PORT_ROLE_FCP_INITIATOR;
  	vpid.vport_type = FC_PORTTYPE_NPIV;
  	vpid.disable = false;
  
  	for (i = 0; i < npiv_tbl->count; i++) {
  		wwnn = wwn_to_u64(npiv_tbl->wwnn[i]);
  		if (wwnn == 0) {
  			/*
  			 * If we get a 0 element from for the WWNN then assume
  			 * the WWNN should be the same as the physical port.
  			 */
  			wwnn = lport->wwnn;
  		}
  		vpid.node_name = wwnn;
  		vpid.port_name = wwn_to_u64(npiv_tbl->wwpn[i]);
  		scnprintf(vpid.symbolic_name, sizeof(vpid.symbolic_name),
  		    "NPIV[%u]:%016llx-%016llx",
  		    created, vpid.port_name, vpid.node_name);
  		fcoe_wwn_to_str(vpid.node_name, wwnn_str, sizeof(wwnn_str));
  		fcoe_wwn_to_str(vpid.port_name, wwpn_str, sizeof(wwpn_str));
  		BNX2FC_HBA_DBG(lport, "Creating vport %s:%s.\n", wwnn_str,
  		    wwpn_str);
  		if (fc_vport_create(lport->host, 0, &vpid))
  			created++;
  		else
  			BNX2FC_HBA_DBG(lport, "Failed to create vport\n");
  	}
  done:
  	return created;
  }
  
  static int __bnx2fc_enable(struct fcoe_ctlr *ctlr)
  {
  	struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr);
  	struct bnx2fc_hba *hba;
  	struct cnic_fc_npiv_tbl *npiv_tbl;
  	struct fc_lport *lport;
  
  	if (!interface->enabled) {
  		if (!ctlr->lp) {
  			pr_err(PFX "__bnx2fc_enable: lport not found\n");
  			return -ENODEV;
  		} else if (!bnx2fc_link_ok(ctlr->lp)) {
  			fcoe_ctlr_link_up(ctlr);
  			interface->enabled = true;
  		}
  	}
  
  	/* Create static NPIV ports if any are contained in NVRAM */
  	hba = interface->hba;
  	lport = ctlr->lp;
  
  	if (!hba)
  		goto done;
  
  	if (!hba->cnic)
  		goto done;
  
  	if (!lport)
  		goto done;
  
  	if (!lport->host)
  		goto done;
  
  	if (!hba->cnic->get_fc_npiv_tbl)
  		goto done;
  
  	npiv_tbl = kzalloc(sizeof(struct cnic_fc_npiv_tbl), GFP_KERNEL);
  	if (!npiv_tbl)
  		goto done;
  
  	if (hba->cnic->get_fc_npiv_tbl(hba->cnic, npiv_tbl))
  		goto done_free;
  
  	bnx2fc_npiv_create_vports(lport, npiv_tbl);
  done_free:
  	kfree(npiv_tbl);
  done:
  	return 0;
  }
  
  /*
   * Deprecated: Use bnx2fc_enabled()
   */
  static int bnx2fc_enable(struct net_device *netdev)
  {
  	struct bnx2fc_interface *interface;
  	struct fcoe_ctlr *ctlr;
  	int rc = 0;
  
  	rtnl_lock();
  	mutex_lock(&bnx2fc_dev_lock);
  
  	interface = bnx2fc_interface_lookup(netdev);
  	ctlr = bnx2fc_to_ctlr(interface);
  	if (!interface) {
  		rc = -ENODEV;
  		pr_err(PFX "bnx2fc_enable: interface not found\n");
  	} else {
  		rc = __bnx2fc_enable(ctlr);
  	}
  
  	mutex_unlock(&bnx2fc_dev_lock);
  	rtnl_unlock();
  	return rc;
  }
  
  /**
   * bnx2fc_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 bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev)
  {
  	struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(cdev);
  
  	switch (cdev->enabled) {
  	case FCOE_CTLR_ENABLED:
  		return __bnx2fc_enable(ctlr);
  	case FCOE_CTLR_DISABLED:
  		return __bnx2fc_disable(ctlr);
  	case FCOE_CTLR_UNUSED:
  	default:
  		return -ENOTSUPP;
  	}
  }
  
  enum bnx2fc_create_link_state {
  	BNX2FC_CREATE_LINK_DOWN,
  	BNX2FC_CREATE_LINK_UP,
  };
  
  /**
   * _bnx2fc_create() - Create bnx2fc 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.
   *
   * Returns: 0 for success
   */
  static int _bnx2fc_create(struct net_device *netdev,
  			  enum fip_mode fip_mode,
  			  enum bnx2fc_create_link_state link_state)
  {
  	struct fcoe_ctlr_device *cdev;
  	struct fcoe_ctlr *ctlr;
  	struct bnx2fc_interface *interface;
  	struct bnx2fc_hba *hba;
  	struct net_device *phys_dev = netdev;
  	struct fc_lport *lport;
  	struct ethtool_drvinfo drvinfo;
  	int rc = 0;
  	int vlan_id = 0;
  
  	BNX2FC_MISC_DBG("Entered bnx2fc_create\n");
  	if (fip_mode != FIP_MODE_FABRIC) {
  		printk(KERN_ERR "fip mode not FABRIC\n");
  		return -EIO;
  	}
  
  	rtnl_lock();
  
  	mutex_lock(&bnx2fc_dev_lock);
  
  	if (!try_module_get(THIS_MODULE)) {
  		rc = -EINVAL;
  		goto mod_err;
  	}
  
  	/* obtain physical netdev */
  	if (is_vlan_dev(netdev))
  		phys_dev = vlan_dev_real_dev(netdev);
  
  	/* verify if the physical device is a netxtreme2 device */
  	if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) {
  		memset(&drvinfo, 0, sizeof(drvinfo));
  		phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo);
  		if (strncmp(drvinfo.driver, "bnx2x", strlen("bnx2x"))) {
  			printk(KERN_ERR PFX "Not a netxtreme2 device\n");
  			rc = -EINVAL;
  			goto netdev_err;
  		}
  	} else {
  		printk(KERN_ERR PFX "unable to obtain drv_info\n");
  		rc = -EINVAL;
  		goto netdev_err;
  	}
  
  	/* obtain interface and initialize rest of the structure */
  	hba = bnx2fc_hba_lookup(phys_dev);
  	if (!hba) {
  		rc = -ENODEV;
  		printk(KERN_ERR PFX "bnx2fc_create: hba not found\n");
  		goto netdev_err;
  	}
  
  	if (bnx2fc_interface_lookup(netdev)) {
  		rc = -EEXIST;
  		goto netdev_err;
  	}
  
  	interface = bnx2fc_interface_create(hba, netdev, fip_mode);
  	if (!interface) {
  		printk(KERN_ERR PFX "bnx2fc_interface_create failed\n");
  		rc = -ENOMEM;
  		goto netdev_err;
  	}
  
  	if (is_vlan_dev(netdev)) {
  		vlan_id = vlan_dev_vlan_id(netdev);
  		interface->vlan_enabled = 1;
  	}
  
  	ctlr = bnx2fc_to_ctlr(interface);
  	cdev = fcoe_ctlr_to_ctlr_dev(ctlr);
  	interface->vlan_id = vlan_id;
  	interface->tm_timeout = BNX2FC_TM_TIMEOUT;
  
  	interface->timer_work_queue =
  			create_singlethread_workqueue("bnx2fc_timer_wq");
  	if (!interface->timer_work_queue) {
  		printk(KERN_ERR PFX "ulp_init could not create timer_wq\n");
  		rc = -EINVAL;
  		goto ifput_err;
  	}
  
  	lport = bnx2fc_if_create(interface, &cdev->dev, 0);
  	if (!lport) {
  		printk(KERN_ERR PFX "Failed to create interface (%s)\n",
  			netdev->name);
  		rc = -EINVAL;
  		goto if_create_err;
  	}
  
  	/* Add interface to if_list */
  	list_add_tail(&interface->list, &if_list);
  
  	lport->boot_time = jiffies;
  
  	/* Make this master N_port */
  	ctlr->lp = lport;
  
  	if (link_state == BNX2FC_CREATE_LINK_UP)
  		cdev->enabled = FCOE_CTLR_ENABLED;
  	else
  		cdev->enabled = FCOE_CTLR_DISABLED;
  
  	if (link_state == BNX2FC_CREATE_LINK_UP &&
  	    !bnx2fc_link_ok(lport)) {
  		fcoe_ctlr_link_up(ctlr);
  		fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
  		set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state);
  	}
  
  	BNX2FC_HBA_DBG(lport, "create: START DISC\n");
  	bnx2fc_start_disc(interface);
  
  	if (link_state == BNX2FC_CREATE_LINK_UP)
  		interface->enabled = true;
  
  	/*
  	 * Release from kref_init in bnx2fc_interface_setup, on success
  	 * lport should be holding a reference taken in bnx2fc_if_create
  	 */
  	bnx2fc_interface_put(interface);
  	/* put netdev that was held while calling dev_get_by_name */
  	mutex_unlock(&bnx2fc_dev_lock);
  	rtnl_unlock();
  	return 0;
  
  if_create_err:
  	destroy_workqueue(interface->timer_work_queue);
  ifput_err:
  	bnx2fc_net_cleanup(interface);
  	bnx2fc_interface_put(interface);
  	goto mod_err;
  netdev_err:
  	module_put(THIS_MODULE);
  mod_err:
  	mutex_unlock(&bnx2fc_dev_lock);
  	rtnl_unlock();
  	return rc;
  }
  
  /**
   * bnx2fc_create() - Create a bnx2fc 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 bnx2fc_create(struct net_device *netdev, enum fip_mode fip_mode)
  {
  	return _bnx2fc_create(netdev, fip_mode, BNX2FC_CREATE_LINK_UP);
  }
  
  /**
   * bnx2fc_ctlr_alloc() - Allocate a bnx2fc 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 bnx2fc_ctlr_alloc(struct net_device *netdev)
  {
  	return _bnx2fc_create(netdev, FIP_MODE_FABRIC,
  			      BNX2FC_CREATE_LINK_DOWN);
  }
  
  /**
   * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc hba instance
   *
   * @cnic:	Pointer to cnic device instance
   *
   **/
  static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic)
  {
  	struct bnx2fc_hba *hba;
  
  	/* Called with bnx2fc_dev_lock held */
  	list_for_each_entry(hba, &adapter_list, list) {
  		if (hba->cnic == cnic)
  			return hba;
  	}
  	return NULL;
  }
  
  static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
  							*netdev)
  {
  	struct bnx2fc_interface *interface;
  
  	/* Called with bnx2fc_dev_lock held */
  	list_for_each_entry(interface, &if_list, list) {
  		if (interface->netdev == netdev)
  			return interface;
  	}
  	return NULL;
  }
  
  static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device
  						      *phys_dev)
  {
  	struct bnx2fc_hba *hba;
  
  	/* Called with bnx2fc_dev_lock held */
  	list_for_each_entry(hba, &adapter_list, list) {
  		if (hba->phys_dev == phys_dev)
  			return hba;
  	}
  	printk(KERN_ERR PFX "adapter_lookup: hba NULL\n");
  	return NULL;
  }
  
  /**
   * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources
   *
   * @dev:	cnic device handle
   */
  static void bnx2fc_ulp_exit(struct cnic_dev *dev)
  {
  	struct bnx2fc_hba *hba;
  	struct bnx2fc_interface *interface, *tmp;
  
  	BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n");
  
  	if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
  		printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n",
  			dev->netdev->name, dev->flags);
  		return;
  	}
  
  	mutex_lock(&bnx2fc_dev_lock);
  	hba = bnx2fc_find_hba_for_cnic(dev);
  	if (!hba) {
  		printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n",
  		       dev);
  		mutex_unlock(&bnx2fc_dev_lock);
  		return;
  	}
  
  	list_del_init(&hba->list);
  	adapter_count--;
  
  	list_for_each_entry_safe(interface, tmp, &if_list, list)
  		/* destroy not called yet, move to quiesced list */
  		if (interface->hba == hba)
  			__bnx2fc_destroy(interface);
  	mutex_unlock(&bnx2fc_dev_lock);
  
  	bnx2fc_ulp_stop(hba);
  	/* unregister cnic device */
  	if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic))
  		hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE);
  	bnx2fc_hba_destroy(hba);
  }
  
  static void bnx2fc_rport_terminate_io(struct fc_rport *rport)
  {
  	/* This is a no-op */
  }
  
  /**
   * bnx2fc_fcoe_reset - Resets the fcoe
   *
   * @shost: shost the reset is from
   *
   * Returns: always 0
   */
  static int bnx2fc_fcoe_reset(struct Scsi_Host *shost)
  {
  	struct fc_lport *lport = shost_priv(shost);
  	fc_lport_reset(lport);
  	return 0;
  }
  
  
  static bool bnx2fc_match(struct net_device *netdev)
  {
  	struct net_device *phys_dev = netdev;
  
  	mutex_lock(&bnx2fc_dev_lock);
  	if (is_vlan_dev(netdev))
  		phys_dev = vlan_dev_real_dev(netdev);
  
  	if (bnx2fc_hba_lookup(phys_dev)) {
  		mutex_unlock(&bnx2fc_dev_lock);
  		return true;
  	}
  
  	mutex_unlock(&bnx2fc_dev_lock);
  	return false;
  }
  
  
  static struct fcoe_transport bnx2fc_transport = {
  	.name = {"bnx2fc"},
  	.attached = false,
  	.list = LIST_HEAD_INIT(bnx2fc_transport.list),
  	.alloc = bnx2fc_ctlr_alloc,
  	.match = bnx2fc_match,
  	.create = bnx2fc_create,
  	.destroy = bnx2fc_destroy,
  	.enable = bnx2fc_enable,
  	.disable = bnx2fc_disable,
  };
  
  /**
   * bnx2fc_cpu_online - Create a receive thread for an  online CPU
   *
   * @cpu: cpu index for the online cpu
   */
  static int bnx2fc_cpu_online(unsigned int cpu)
  {
  	struct bnx2fc_percpu_s *p;
  	struct task_struct *thread;
  
  	p = &per_cpu(bnx2fc_percpu, cpu);
  
  	thread = kthread_create_on_node(bnx2fc_percpu_io_thread,
  					(void *)p, cpu_to_node(cpu),
  					"bnx2fc_thread/%d", cpu);
  	if (IS_ERR(thread))
  		return PTR_ERR(thread);
  
  	/* bind thread to the cpu */
  	kthread_bind(thread, cpu);
  	p->iothread = thread;
  	wake_up_process(thread);
  	return 0;
  }
  
  static int bnx2fc_cpu_offline(unsigned int cpu)
  {
  	struct bnx2fc_percpu_s *p;
  	struct task_struct *thread;
  	struct bnx2fc_work *work, *tmp;
  
  	BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu);
  
  	/* Prevent any new work from being queued for this CPU */
  	p = &per_cpu(bnx2fc_percpu, cpu);
  	spin_lock_bh(&p->fp_work_lock);
  	thread = p->iothread;
  	p->iothread = NULL;
  
  	/* Free all work in the list */
  	list_for_each_entry_safe(work, tmp, &p->work_list, list) {
  		list_del_init(&work->list);
  		bnx2fc_process_cq_compl(work->tgt, work->wqe, work->rq_data,
  					work->num_rq, work->task);
  		kfree(work);
  	}
  
  	spin_unlock_bh(&p->fp_work_lock);
  
  	if (thread)
  		kthread_stop(thread);
  	return 0;
  }
  
  static int bnx2fc_slave_configure(struct scsi_device *sdev)
  {
  	if (!bnx2fc_queue_depth)
  		return 0;
  
  	scsi_change_queue_depth(sdev, bnx2fc_queue_depth);
  	return 0;
  }
  
  static enum cpuhp_state bnx2fc_online_state;
  
  /**
   * bnx2fc_mod_init - module init entry point
   *
   * Initialize driver wide global data structures, and register
   * with cnic module
   **/
  static int __init bnx2fc_mod_init(void)
  {
  	struct fcoe_percpu_s *bg;
  	struct task_struct *l2_thread;
  	int rc = 0;
  	unsigned int cpu = 0;
  	struct bnx2fc_percpu_s *p;
  
  	printk(KERN_INFO PFX "%s", version);
  
  	/* register as a fcoe transport */
  	rc = fcoe_transport_attach(&bnx2fc_transport);
  	if (rc) {
  		printk(KERN_ERR "failed to register an fcoe transport, check "
  			"if libfcoe is loaded\n");
  		goto out;
  	}
  
  	INIT_LIST_HEAD(&adapter_list);
  	INIT_LIST_HEAD(&if_list);
  	mutex_init(&bnx2fc_dev_lock);
  	adapter_count = 0;
  
  	/* Attach FC transport template */
  	rc = bnx2fc_attach_transport();
  	if (rc)
  		goto detach_ft;
  
  	bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0);
  	if (!bnx2fc_wq) {
  		rc = -ENOMEM;
  		goto release_bt;
  	}
  
  	bg = &bnx2fc_global;
  	skb_queue_head_init(&bg->fcoe_rx_list);
  	l2_thread = kthread_create(bnx2fc_l2_rcv_thread,
  				   (void *)bg,
  				   "bnx2fc_l2_thread");
  	if (IS_ERR(l2_thread)) {
  		rc = PTR_ERR(l2_thread);
  		goto free_wq;
  	}
  	wake_up_process(l2_thread);
  	spin_lock_bh(&bg->fcoe_rx_list.lock);
  	bg->kthread = l2_thread;
  	spin_unlock_bh(&bg->fcoe_rx_list.lock);
  
  	for_each_possible_cpu(cpu) {
  		p = &per_cpu(bnx2fc_percpu, cpu);
  		INIT_LIST_HEAD(&p->work_list);
  		spin_lock_init(&p->fp_work_lock);
  	}
  
  	rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/bnx2fc:online",
  			       bnx2fc_cpu_online, bnx2fc_cpu_offline);
  	if (rc < 0)
  		goto stop_thread;
  	bnx2fc_online_state = rc;
  
  	cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb);
  	return 0;
  
  stop_thread:
  	kthread_stop(l2_thread);
  free_wq:
  	destroy_workqueue(bnx2fc_wq);
  release_bt:
  	bnx2fc_release_transport();
  detach_ft:
  	fcoe_transport_detach(&bnx2fc_transport);
  out:
  	return rc;
  }
  
  static void __exit bnx2fc_mod_exit(void)
  {
  	LIST_HEAD(to_be_deleted);
  	struct bnx2fc_hba *hba, *next;
  	struct fcoe_percpu_s *bg;
  	struct task_struct *l2_thread;
  	struct sk_buff *skb;
  
  	/*
  	 * NOTE: Since cnic calls register_driver routine rtnl_lock,
  	 * it will have higher precedence than bnx2fc_dev_lock.
  	 * unregister_device() cannot be called with bnx2fc_dev_lock
  	 * held.
  	 */
  	mutex_lock(&bnx2fc_dev_lock);
  	list_splice_init(&adapter_list, &to_be_deleted);
  	adapter_count = 0;
  	mutex_unlock(&bnx2fc_dev_lock);
  
  	/* Unregister with cnic */
  	list_for_each_entry_safe(hba, next, &to_be_deleted, list) {
  		list_del_init(&hba->list);
  		printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p\n",
  		       hba);
  		bnx2fc_ulp_stop(hba);
  		/* unregister cnic device */
  		if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED,
  				       &hba->reg_with_cnic))
  			hba->cnic->unregister_device(hba->cnic,
  							 CNIC_ULP_FCOE);
  		bnx2fc_hba_destroy(hba);
  	}
  	cnic_unregister_driver(CNIC_ULP_FCOE);
  
  	/* Destroy global thread */
  	bg = &bnx2fc_global;
  	spin_lock_bh(&bg->fcoe_rx_list.lock);
  	l2_thread = bg->kthread;
  	bg->kthread = NULL;
  	while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL)
  		kfree_skb(skb);
  
  	spin_unlock_bh(&bg->fcoe_rx_list.lock);
  
  	if (l2_thread)
  		kthread_stop(l2_thread);
  
  	cpuhp_remove_state(bnx2fc_online_state);
  
  	destroy_workqueue(bnx2fc_wq);
  	/*
  	 * detach from scsi transport
  	 * must happen after all destroys are done
  	 */
  	bnx2fc_release_transport();
  
  	/* detach from fcoe transport */
  	fcoe_transport_detach(&bnx2fc_transport);
  }
  
  module_init(bnx2fc_mod_init);
  module_exit(bnx2fc_mod_exit);
  
  static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ = {
  	.set_fcoe_ctlr_enabled = bnx2fc_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 = bnx2fc_fcf_get_vlan_id,
  };
  
  static struct fc_function_template bnx2fc_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) +
  				sizeof(struct bnx2fc_rport)),
  	.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 = bnx2fc_get_host_stats,
  
  	.issue_fc_host_lip = bnx2fc_fcoe_reset,
  
  	.terminate_rport_io = bnx2fc_rport_terminate_io,
  
  	.vport_create = bnx2fc_vport_create,
  	.vport_delete = bnx2fc_vport_destroy,
  	.vport_disable = bnx2fc_vport_disable,
  	.bsg_request = fc_lport_bsg_request,
  };
  
  static struct fc_function_template bnx2fc_vport_xport_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) +
  				sizeof(struct bnx2fc_rport)),
  	.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 = bnx2fc_fcoe_reset,
  	.terminate_rport_io = fc_rport_terminate_io,
  	.bsg_request = fc_lport_bsg_request,
  };
  
  /*
   * Additional scsi_host attributes.
   */
  static ssize_t
  bnx2fc_tm_timeout_show(struct device *dev, struct device_attribute *attr,
  	char *buf)
  {
  	struct Scsi_Host *shost = class_to_shost(dev);
  	struct fc_lport *lport = shost_priv(shost);
  	struct fcoe_port *port = lport_priv(lport);
  	struct bnx2fc_interface *interface = port->priv;
  
  	sprintf(buf, "%u\n", interface->tm_timeout);
  	return strlen(buf);
  }
  
  static ssize_t
  bnx2fc_tm_timeout_store(struct device *dev,
  	struct device_attribute *attr, const char *buf, size_t count)
  {
  	struct Scsi_Host *shost = class_to_shost(dev);
  	struct fc_lport *lport = shost_priv(shost);
  	struct fcoe_port *port = lport_priv(lport);
  	struct bnx2fc_interface *interface = port->priv;
  	int rval, val;
  
  	rval = kstrtouint(buf, 10, &val);
  	if (rval)
  		return rval;
  	if (val > 255)
  		return -ERANGE;
  
  	interface->tm_timeout = (u8)val;
  	return strlen(buf);
  }
  
  static DEVICE_ATTR(tm_timeout, S_IRUGO|S_IWUSR, bnx2fc_tm_timeout_show,
  	bnx2fc_tm_timeout_store);
  
  static struct attribute *bnx2fc_host_attrs[] = {
  	&dev_attr_tm_timeout.attr,
  	NULL,
  };
  
  ATTRIBUTE_GROUPS(bnx2fc_host);
  
  /*
   * scsi_host_template structure used while registering with SCSI-ml
   */
  static struct scsi_host_template bnx2fc_shost_template = {
  	.module			= THIS_MODULE,
  	.name			= "QLogic Offload FCoE Initiator",
  	.queuecommand		= bnx2fc_queuecommand,
  	.eh_timed_out		= fc_eh_timed_out,
  	.eh_abort_handler	= bnx2fc_eh_abort,	  /* abts */
  	.eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */
  	.eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */
  	.eh_host_reset_handler	= fc_eh_host_reset,
  	.slave_alloc		= fc_slave_alloc,
  	.change_queue_depth	= scsi_change_queue_depth,
  	.this_id		= -1,
  	.cmd_per_lun		= 3,
  	.sg_tablesize		= BNX2FC_MAX_BDS_PER_CMD,
  	.dma_boundary           = 0x7fff,
  	.max_sectors		= 0x3fbf,
  	.track_queue_depth	= 1,
  	.slave_configure	= bnx2fc_slave_configure,
  	.shost_groups		= bnx2fc_host_groups,
  };
  
  static struct libfc_function_template bnx2fc_libfc_fcn_templ = {
  	.frame_send		= bnx2fc_xmit,
  	.elsct_send		= bnx2fc_elsct_send,
  	.fcp_abort_io		= bnx2fc_abort_io,
  	.fcp_cleanup		= bnx2fc_cleanup,
  	.get_lesb		= fcoe_get_lesb,
  	.rport_event_callback	= bnx2fc_rport_event_handler,
  };
  
  /*
   * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface
   *			structure carrying callback function pointers
   */
  static struct cnic_ulp_ops bnx2fc_cnic_cb = {
  	.owner			= THIS_MODULE,
  	.cnic_init		= bnx2fc_ulp_init,
  	.cnic_exit		= bnx2fc_ulp_exit,
  	.cnic_start		= bnx2fc_ulp_start,
  	.cnic_stop		= bnx2fc_ulp_stop,
  	.indicate_kcqes		= bnx2fc_indicate_kcqe,
  	.indicate_netevent	= bnx2fc_indicate_netevent,
  	.cnic_get_stats		= bnx2fc_ulp_get_stats,
  };
  