OSCL-LXR linux-6.0.1/​drivers/​scsi/​bnx2fc/​bnx2fc_fcoe.c	Source navigation Diff markup Identifier search General search
	Version: linux-6.0.1 spark-3.0.0 hadoop-3.2.0-src hadoop-3.3.0-src spark-2.4.7 linux-4.15.13 hadoop-2.7.4-src Revert   Change

 /* 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;
     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 */
     this_cpu_inc(lport->stats->TxFrames);
     this_cpu_add(lport->stats->TxWords, wlen);
 
     /* 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_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);
 
     this_cpu_inc(lport->stats->RxFrames);
     this_cpu_add(lport->stats->RxWords, fr_len / FCOE_WORD_TO_BYTE);
 
     fp = (struct fc_frame *)skb;
     fc_frame_init(fp);
     fr_dev(fp) = lport;
     fr_sof(fp) = hp->fcoe_sof;
     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))) {
         crc_err = this_cpu_inc_return(lport->stats->InvalidCRCCount);
         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;
                 this_cpu_inc(lport->stats->LinkFailureCount);
                 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_run(bnx2fc_l2_rcv_thread,
                 (void *)bg,
                 "bnx2fc_l2_thread");
     if (IS_ERR(l2_thread)) {
         rc = PTR_ERR(l2_thread);
         goto free_wq;
     }
     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,
     .cmd_size       = sizeof(struct bnx2fc_priv),
 };
 
 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,
 };