OSCL-LXR linux-6.0.1/​drivers/​scsi/​qedf/​qedf_main.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

 // SPDX-License-Identifier: GPL-2.0-only
 /*
  *  QLogic FCoE Offload Driver
  *  Copyright (c) 2016-2018 Cavium Inc.
  */
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/pci.h>
 #include <linux/device.h>
 #include <linux/highmem.h>
 #include <linux/crc32.h>
 #include <linux/interrupt.h>
 #include <linux/list.h>
 #include <linux/kthread.h>
 #include <linux/phylink.h>
 #include <scsi/libfc.h>
 #include <scsi/scsi_host.h>
 #include <scsi/fc_frame.h>
 #include <linux/if_ether.h>
 #include <linux/if_vlan.h>
 #include <linux/cpu.h>
 #include "qedf.h"
 #include "qedf_dbg.h"
 #include <uapi/linux/pci_regs.h>
 
 const struct qed_fcoe_ops *qed_ops;
 
 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id);
 static void qedf_remove(struct pci_dev *pdev);
 static void qedf_shutdown(struct pci_dev *pdev);
 static void qedf_schedule_recovery_handler(void *dev);
 static void qedf_recovery_handler(struct work_struct *work);
 
 /*
  * Driver module parameters.
  */
 static unsigned int qedf_dev_loss_tmo = 60;
 module_param_named(dev_loss_tmo, qedf_dev_loss_tmo, int, S_IRUGO);
 MODULE_PARM_DESC(dev_loss_tmo,  " dev_loss_tmo setting for attached "
     "remote ports (default 60)");
 
 uint qedf_debug = QEDF_LOG_INFO;
 module_param_named(debug, qedf_debug, uint, S_IRUGO|S_IWUSR);
 MODULE_PARM_DESC(debug, " Debug mask. Pass '1' to enable default debugging"
     " mask");
 
 static uint qedf_fipvlan_retries = 60;
 module_param_named(fipvlan_retries, qedf_fipvlan_retries, int, S_IRUGO);
 MODULE_PARM_DESC(fipvlan_retries, " Number of FIP VLAN requests to attempt "
     "before giving up (default 60)");
 
 static uint qedf_fallback_vlan = QEDF_FALLBACK_VLAN;
 module_param_named(fallback_vlan, qedf_fallback_vlan, int, S_IRUGO);
 MODULE_PARM_DESC(fallback_vlan, " VLAN ID to try if fip vlan request fails "
     "(default 1002).");
 
 static int qedf_default_prio = -1;
 module_param_named(default_prio, qedf_default_prio, int, S_IRUGO);
 MODULE_PARM_DESC(default_prio, " Override 802.1q priority for FIP and FCoE"
     " traffic (value between 0 and 7, default 3).");
 
 uint qedf_dump_frames;
 module_param_named(dump_frames, qedf_dump_frames, int, S_IRUGO | S_IWUSR);
 MODULE_PARM_DESC(dump_frames, " Print the skb data of FIP and FCoE frames "
     "(default off)");
 
 static uint qedf_queue_depth;
 module_param_named(queue_depth, qedf_queue_depth, int, S_IRUGO);
 MODULE_PARM_DESC(queue_depth, " Sets the queue depth for all LUNs discovered "
     "by the qedf driver. Default is 0 (use OS default).");
 
 uint qedf_io_tracing;
 module_param_named(io_tracing, qedf_io_tracing, int, S_IRUGO | S_IWUSR);
 MODULE_PARM_DESC(io_tracing, " Enable logging of SCSI requests/completions "
     "into trace buffer. (default off).");
 
 static uint qedf_max_lun = MAX_FIBRE_LUNS;
 module_param_named(max_lun, qedf_max_lun, int, S_IRUGO);
 MODULE_PARM_DESC(max_lun, " Sets the maximum luns per target that the driver "
     "supports. (default 0xffffffff)");
 
 uint qedf_link_down_tmo;
 module_param_named(link_down_tmo, qedf_link_down_tmo, int, S_IRUGO);
 MODULE_PARM_DESC(link_down_tmo, " Delays informing the fcoe transport that the "
     "link is down by N seconds.");
 
 bool qedf_retry_delay;
 module_param_named(retry_delay, qedf_retry_delay, bool, S_IRUGO | S_IWUSR);
 MODULE_PARM_DESC(retry_delay, " Enable/disable handling of FCP_RSP IU retry "
     "delay handling (default off).");
 
 static bool qedf_dcbx_no_wait;
 module_param_named(dcbx_no_wait, qedf_dcbx_no_wait, bool, S_IRUGO | S_IWUSR);
 MODULE_PARM_DESC(dcbx_no_wait, " Do not wait for DCBX convergence to start "
     "sending FIP VLAN requests on link up (Default: off).");
 
 static uint qedf_dp_module;
 module_param_named(dp_module, qedf_dp_module, uint, S_IRUGO);
 MODULE_PARM_DESC(dp_module, " bit flags control for verbose printk passed "
     "qed module during probe.");
 
 static uint qedf_dp_level = QED_LEVEL_NOTICE;
 module_param_named(dp_level, qedf_dp_level, uint, S_IRUGO);
 MODULE_PARM_DESC(dp_level, " printk verbosity control passed to qed module  "
     "during probe (0-3: 0 more verbose).");
 
 static bool qedf_enable_recovery = true;
 module_param_named(enable_recovery, qedf_enable_recovery,
         bool, S_IRUGO | S_IWUSR);
 MODULE_PARM_DESC(enable_recovery, "Enable/disable recovery on driver/firmware "
         "interface level errors 0 = Disabled, 1 = Enabled (Default: 1).");
 
 struct workqueue_struct *qedf_io_wq;
 
 static struct fcoe_percpu_s qedf_global;
 static DEFINE_SPINLOCK(qedf_global_lock);
 
 static struct kmem_cache *qedf_io_work_cache;
 
 void qedf_set_vlan_id(struct qedf_ctx *qedf, int vlan_id)
 {
     int vlan_id_tmp = 0;
 
     vlan_id_tmp = vlan_id  | (qedf->prio << VLAN_PRIO_SHIFT);
     qedf->vlan_id = vlan_id_tmp;
     QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
           "Setting vlan_id=0x%04x prio=%d.\n",
           vlan_id_tmp, qedf->prio);
 }
 
 /* Returns true if we have a valid vlan, false otherwise */
 static bool qedf_initiate_fipvlan_req(struct qedf_ctx *qedf)
 {
 
     while (qedf->fipvlan_retries--) {
         /* This is to catch if link goes down during fipvlan retries */
         if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
             QEDF_ERR(&qedf->dbg_ctx, "Link not up.\n");
             return false;
         }
 
         if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
             QEDF_ERR(&qedf->dbg_ctx, "Driver unloading.\n");
             return false;
         }
 
         if (qedf->vlan_id > 0) {
             QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
                   "vlan = 0x%x already set, calling ctlr_link_up.\n",
                   qedf->vlan_id);
             if (atomic_read(&qedf->link_state) == QEDF_LINK_UP)
                 fcoe_ctlr_link_up(&qedf->ctlr);
             return true;
         }
 
         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
                "Retry %d.\n", qedf->fipvlan_retries);
         init_completion(&qedf->fipvlan_compl);
         qedf_fcoe_send_vlan_req(qedf);
         wait_for_completion_timeout(&qedf->fipvlan_compl, 1 * HZ);
     }
 
     return false;
 }
 
 static void qedf_handle_link_update(struct work_struct *work)
 {
     struct qedf_ctx *qedf =
         container_of(work, struct qedf_ctx, link_update.work);
     int rc;
 
     QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Entered. link_state=%d.\n",
           atomic_read(&qedf->link_state));
 
     if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) {
         rc = qedf_initiate_fipvlan_req(qedf);
         if (rc)
             return;
 
         if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
             QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
                   "Link is down, resetting vlan_id.\n");
             qedf->vlan_id = 0;
             return;
         }
 
         /*
          * If we get here then we never received a repsonse to our
          * fip vlan request so set the vlan_id to the default and
          * tell FCoE that the link is up
          */
         QEDF_WARN(&(qedf->dbg_ctx), "Did not receive FIP VLAN "
                "response, falling back to default VLAN %d.\n",
                qedf_fallback_vlan);
         qedf_set_vlan_id(qedf, qedf_fallback_vlan);
 
         /*
          * Zero out data_src_addr so we'll update it with the new
          * lport port_id
          */
         eth_zero_addr(qedf->data_src_addr);
         fcoe_ctlr_link_up(&qedf->ctlr);
     } else if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
         /*
          * If we hit here and link_down_tmo_valid is still 1 it means
          * that link_down_tmo timed out so set it to 0 to make sure any
          * other readers have accurate state.
          */
         atomic_set(&qedf->link_down_tmo_valid, 0);
         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
             "Calling fcoe_ctlr_link_down().\n");
         fcoe_ctlr_link_down(&qedf->ctlr);
         if (qedf_wait_for_upload(qedf) == false)
             QEDF_ERR(&qedf->dbg_ctx,
                  "Could not upload all sessions.\n");
         /* Reset the number of FIP VLAN retries */
         qedf->fipvlan_retries = qedf_fipvlan_retries;
     }
 }
 
 #define QEDF_FCOE_MAC_METHOD_GRANGED_MAC        1
 #define QEDF_FCOE_MAC_METHOD_FCF_MAP            2
 #define QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC       3
 static void qedf_set_data_src_addr(struct qedf_ctx *qedf, struct fc_frame *fp)
 {
     u8 *granted_mac;
     struct fc_frame_header *fh = fc_frame_header_get(fp);
     u8 fc_map[3];
     int method = 0;
 
     /* Get granted MAC address from FIP FLOGI payload */
     granted_mac = fr_cb(fp)->granted_mac;
 
     /*
      * We set the source MAC for FCoE traffic based on the Granted MAC
      * address from the switch.
      *
      * If granted_mac is non-zero, we used that.
      * If the granted_mac is zeroed out, created the FCoE MAC based on
      * the sel_fcf->fc_map and the d_id fo the FLOGI frame.
      * If sel_fcf->fc_map is 0 then we use the default FCF-MAC plus the
      * d_id of the FLOGI frame.
      */
     if (!is_zero_ether_addr(granted_mac)) {
         ether_addr_copy(qedf->data_src_addr, granted_mac);
         method = QEDF_FCOE_MAC_METHOD_GRANGED_MAC;
     } else if (qedf->ctlr.sel_fcf->fc_map != 0) {
         hton24(fc_map, qedf->ctlr.sel_fcf->fc_map);
         qedf->data_src_addr[0] = fc_map[0];
         qedf->data_src_addr[1] = fc_map[1];
         qedf->data_src_addr[2] = fc_map[2];
         qedf->data_src_addr[3] = fh->fh_d_id[0];
         qedf->data_src_addr[4] = fh->fh_d_id[1];
         qedf->data_src_addr[5] = fh->fh_d_id[2];
         method = QEDF_FCOE_MAC_METHOD_FCF_MAP;
     } else {
         fc_fcoe_set_mac(qedf->data_src_addr, fh->fh_d_id);
         method = QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC;
     }
 
     QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
         "QEDF data_src_mac=%pM method=%d.\n", qedf->data_src_addr, method);
 }
 
 static void qedf_flogi_resp(struct fc_seq *seq, struct fc_frame *fp,
     void *arg)
 {
     struct fc_exch *exch = fc_seq_exch(seq);
     struct fc_lport *lport = exch->lp;
     struct qedf_ctx *qedf = lport_priv(lport);
 
     if (!qedf) {
         QEDF_ERR(NULL, "qedf is NULL.\n");
         return;
     }
 
     /*
      * If ERR_PTR is set then don't try to stat anything as it will cause
      * a crash when we access fp.
      */
     if (IS_ERR(fp)) {
         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
             "fp has IS_ERR() set.\n");
         goto skip_stat;
     }
 
     /* Log stats for FLOGI reject */
     if (fc_frame_payload_op(fp) == ELS_LS_RJT)
         qedf->flogi_failed++;
     else if (fc_frame_payload_op(fp) == ELS_LS_ACC) {
         /* Set the source MAC we will use for FCoE traffic */
         qedf_set_data_src_addr(qedf, fp);
         qedf->flogi_pending = 0;
     }
 
     /* Complete flogi_compl so we can proceed to sending ADISCs */
     complete(&qedf->flogi_compl);
 
 skip_stat:
     /* Report response to libfc */
     fc_lport_flogi_resp(seq, fp, lport);
 }
 
 static struct fc_seq *qedf_elsct_send(struct fc_lport *lport, u32 did,
     struct fc_frame *fp, unsigned int op,
     void (*resp)(struct fc_seq *,
     struct fc_frame *,
     void *),
     void *arg, u32 timeout)
 {
     struct qedf_ctx *qedf = lport_priv(lport);
 
     /*
      * Intercept FLOGI for statistic purposes. Note we use the resp
      * callback to tell if this is really a flogi.
      */
     if (resp == fc_lport_flogi_resp) {
         qedf->flogi_cnt++;
         if (qedf->flogi_pending >= QEDF_FLOGI_RETRY_CNT) {
             schedule_delayed_work(&qedf->stag_work, 2);
             return NULL;
         }
         qedf->flogi_pending++;
         return fc_elsct_send(lport, did, fp, op, qedf_flogi_resp,
             arg, timeout);
     }
 
     return fc_elsct_send(lport, did, fp, op, resp, arg, timeout);
 }
 
 int qedf_send_flogi(struct qedf_ctx *qedf)
 {
     struct fc_lport *lport;
     struct fc_frame *fp;
 
     lport = qedf->lport;
 
     if (!lport->tt.elsct_send) {
         QEDF_ERR(&qedf->dbg_ctx, "tt.elsct_send not set.\n");
         return -EINVAL;
     }
 
     fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi));
     if (!fp) {
         QEDF_ERR(&(qedf->dbg_ctx), "fc_frame_alloc failed.\n");
         return -ENOMEM;
     }
 
     QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
         "Sending FLOGI to reestablish session with switch.\n");
     lport->tt.elsct_send(lport, FC_FID_FLOGI, fp,
         ELS_FLOGI, qedf_flogi_resp, lport, lport->r_a_tov);
 
     init_completion(&qedf->flogi_compl);
 
     return 0;
 }
 
 /*
  * This function is called if link_down_tmo is in use.  If we get a link up and
  * link_down_tmo has not expired then use just FLOGI/ADISC to recover our
  * sessions with targets.  Otherwise, just call fcoe_ctlr_link_up().
  */
 static void qedf_link_recovery(struct work_struct *work)
 {
     struct qedf_ctx *qedf =
         container_of(work, struct qedf_ctx, link_recovery.work);
     struct fc_lport *lport = qedf->lport;
     struct fc_rport_priv *rdata;
     bool rc;
     int retries = 30;
     int rval, i;
     struct list_head rdata_login_list;
 
     INIT_LIST_HEAD(&rdata_login_list);
 
     QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
         "Link down tmo did not expire.\n");
 
     /*
      * Essentially reset the fcoe_ctlr here without affecting the state
      * of the libfc structs.
      */
     qedf->ctlr.state = FIP_ST_LINK_WAIT;
     fcoe_ctlr_link_down(&qedf->ctlr);
 
     /*
      * Bring the link up before we send the fipvlan request so libfcoe
      * can select a new fcf in parallel
      */
     fcoe_ctlr_link_up(&qedf->ctlr);
 
     /* Since the link when down and up to verify which vlan we're on */
     qedf->fipvlan_retries = qedf_fipvlan_retries;
     rc = qedf_initiate_fipvlan_req(qedf);
     /* If getting the VLAN fails, set the VLAN to the fallback one */
     if (!rc)
         qedf_set_vlan_id(qedf, qedf_fallback_vlan);
 
     /*
      * We need to wait for an FCF to be selected due to the
      * fcoe_ctlr_link_up other the FLOGI will be rejected.
      */
     while (retries > 0) {
         if (qedf->ctlr.sel_fcf) {
             QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
                 "FCF reselected, proceeding with FLOGI.\n");
             break;
         }
         msleep(500);
         retries--;
     }
 
     if (retries < 1) {
         QEDF_ERR(&(qedf->dbg_ctx), "Exhausted retries waiting for "
             "FCF selection.\n");
         return;
     }
 
     rval = qedf_send_flogi(qedf);
     if (rval)
         return;
 
     /* Wait for FLOGI completion before proceeding with sending ADISCs */
     i = wait_for_completion_timeout(&qedf->flogi_compl,
         qedf->lport->r_a_tov);
     if (i == 0) {
         QEDF_ERR(&(qedf->dbg_ctx), "FLOGI timed out.\n");
         return;
     }
 
     /*
      * Call lport->tt.rport_login which will cause libfc to send an
      * ADISC since the rport is in state ready.
      */
     mutex_lock(&lport->disc.disc_mutex);
     list_for_each_entry_rcu(rdata, &lport->disc.rports, peers) {
         if (kref_get_unless_zero(&rdata->kref)) {
             fc_rport_login(rdata);
             kref_put(&rdata->kref, fc_rport_destroy);
         }
     }
     mutex_unlock(&lport->disc.disc_mutex);
 }
 
 static void qedf_update_link_speed(struct qedf_ctx *qedf,
     struct qed_link_output *link)
 {
     __ETHTOOL_DECLARE_LINK_MODE_MASK(sup_caps);
     struct fc_lport *lport = qedf->lport;
 
     lport->link_speed = FC_PORTSPEED_UNKNOWN;
     lport->link_supported_speeds = FC_PORTSPEED_UNKNOWN;
 
     /* Set fc_host link speed */
     switch (link->speed) {
     case 10000:
         lport->link_speed = FC_PORTSPEED_10GBIT;
         break;
     case 25000:
         lport->link_speed = FC_PORTSPEED_25GBIT;
         break;
     case 40000:
         lport->link_speed = FC_PORTSPEED_40GBIT;
         break;
     case 50000:
         lport->link_speed = FC_PORTSPEED_50GBIT;
         break;
     case 100000:
         lport->link_speed = FC_PORTSPEED_100GBIT;
         break;
     case 20000:
         lport->link_speed = FC_PORTSPEED_20GBIT;
         break;
     default:
         lport->link_speed = FC_PORTSPEED_UNKNOWN;
         break;
     }
 
     /*
      * Set supported link speed by querying the supported
      * capabilities of the link.
      */
 
     phylink_zero(sup_caps);
     phylink_set(sup_caps, 10000baseT_Full);
     phylink_set(sup_caps, 10000baseKX4_Full);
     phylink_set(sup_caps, 10000baseR_FEC);
     phylink_set(sup_caps, 10000baseCR_Full);
     phylink_set(sup_caps, 10000baseSR_Full);
     phylink_set(sup_caps, 10000baseLR_Full);
     phylink_set(sup_caps, 10000baseLRM_Full);
     phylink_set(sup_caps, 10000baseKR_Full);
 
     if (linkmode_intersects(link->supported_caps, sup_caps))
         lport->link_supported_speeds |= FC_PORTSPEED_10GBIT;
 
     phylink_zero(sup_caps);
     phylink_set(sup_caps, 25000baseKR_Full);
     phylink_set(sup_caps, 25000baseCR_Full);
     phylink_set(sup_caps, 25000baseSR_Full);
 
     if (linkmode_intersects(link->supported_caps, sup_caps))
         lport->link_supported_speeds |= FC_PORTSPEED_25GBIT;
 
     phylink_zero(sup_caps);
     phylink_set(sup_caps, 40000baseLR4_Full);
     phylink_set(sup_caps, 40000baseKR4_Full);
     phylink_set(sup_caps, 40000baseCR4_Full);
     phylink_set(sup_caps, 40000baseSR4_Full);
 
     if (linkmode_intersects(link->supported_caps, sup_caps))
         lport->link_supported_speeds |= FC_PORTSPEED_40GBIT;
 
     phylink_zero(sup_caps);
     phylink_set(sup_caps, 50000baseKR2_Full);
     phylink_set(sup_caps, 50000baseCR2_Full);
     phylink_set(sup_caps, 50000baseSR2_Full);
 
     if (linkmode_intersects(link->supported_caps, sup_caps))
         lport->link_supported_speeds |= FC_PORTSPEED_50GBIT;
 
     phylink_zero(sup_caps);
     phylink_set(sup_caps, 100000baseKR4_Full);
     phylink_set(sup_caps, 100000baseSR4_Full);
     phylink_set(sup_caps, 100000baseCR4_Full);
     phylink_set(sup_caps, 100000baseLR4_ER4_Full);
 
     if (linkmode_intersects(link->supported_caps, sup_caps))
         lport->link_supported_speeds |= FC_PORTSPEED_100GBIT;
 
     phylink_zero(sup_caps);
     phylink_set(sup_caps, 20000baseKR2_Full);
 
     if (linkmode_intersects(link->supported_caps, sup_caps))
         lport->link_supported_speeds |= FC_PORTSPEED_20GBIT;
 
     if (lport->host && lport->host->shost_data)
         fc_host_supported_speeds(lport->host) =
             lport->link_supported_speeds;
 }
 
 static void qedf_bw_update(void *dev)
 {
     struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
     struct qed_link_output link;
 
     /* Get the latest status of the link */
     qed_ops->common->get_link(qedf->cdev, &link);
 
     if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
         QEDF_ERR(&qedf->dbg_ctx,
              "Ignore link update, driver getting unload.\n");
         return;
     }
 
     if (link.link_up) {
         if (atomic_read(&qedf->link_state) == QEDF_LINK_UP)
             qedf_update_link_speed(qedf, &link);
         else
             QEDF_ERR(&qedf->dbg_ctx,
                  "Ignore bw update, link is down.\n");
 
     } else {
         QEDF_ERR(&qedf->dbg_ctx, "link_up is not set.\n");
     }
 }
 
 static void qedf_link_update(void *dev, struct qed_link_output *link)
 {
     struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
 
     /*
      * Prevent race where we're removing the module and we get link update
      * for qed.
      */
     if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
         QEDF_ERR(&qedf->dbg_ctx,
              "Ignore link update, driver getting unload.\n");
         return;
     }
 
     if (link->link_up) {
         if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) {
             QEDF_INFO((&qedf->dbg_ctx), QEDF_LOG_DISC,
                 "Ignoring link up event as link is already up.\n");
             return;
         }
         QEDF_ERR(&(qedf->dbg_ctx), "LINK UP (%d GB/s).\n",
             link->speed / 1000);
 
         /* Cancel any pending link down work */
         cancel_delayed_work(&qedf->link_update);
 
         atomic_set(&qedf->link_state, QEDF_LINK_UP);
         qedf_update_link_speed(qedf, link);
 
         if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE ||
             qedf_dcbx_no_wait) {
             QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
                  "DCBx done.\n");
             if (atomic_read(&qedf->link_down_tmo_valid) > 0)
                 queue_delayed_work(qedf->link_update_wq,
                     &qedf->link_recovery, 0);
             else
                 queue_delayed_work(qedf->link_update_wq,
                     &qedf->link_update, 0);
             atomic_set(&qedf->link_down_tmo_valid, 0);
         }
 
     } else {
         QEDF_ERR(&(qedf->dbg_ctx), "LINK DOWN.\n");
 
         atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
         atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING);
         /*
          * Flag that we're waiting for the link to come back up before
          * informing the fcoe layer of the event.
          */
         if (qedf_link_down_tmo > 0) {
             QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
                 "Starting link down tmo.\n");
             atomic_set(&qedf->link_down_tmo_valid, 1);
         }
         qedf->vlan_id = 0;
         qedf_update_link_speed(qedf, link);
         queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
             qedf_link_down_tmo * HZ);
     }
 }
 
 
 static void qedf_dcbx_handler(void *dev, struct qed_dcbx_get *get, u32 mib_type)
 {
     struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
     u8 tmp_prio;
 
     QEDF_ERR(&(qedf->dbg_ctx), "DCBx event valid=%d enabled=%d fcoe "
         "prio=%d.\n", get->operational.valid, get->operational.enabled,
         get->operational.app_prio.fcoe);
 
     if (get->operational.enabled && get->operational.valid) {
         /* If DCBX was already negotiated on link up then just exit */
         if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE) {
             QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
                 "DCBX already set on link up.\n");
             return;
         }
 
         atomic_set(&qedf->dcbx, QEDF_DCBX_DONE);
 
         /*
          * Set the 8021q priority in the following manner:
          *
          * 1. If a modparam is set use that
          * 2. If the value is not between 0..7 use the default
          * 3. Use the priority we get from the DCBX app tag
          */
         tmp_prio = get->operational.app_prio.fcoe;
         if (qedf_default_prio > -1)
             qedf->prio = qedf_default_prio;
         else if (tmp_prio > 7) {
             QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
                 "FIP/FCoE prio %d out of range, setting to %d.\n",
                 tmp_prio, QEDF_DEFAULT_PRIO);
             qedf->prio = QEDF_DEFAULT_PRIO;
         } else
             qedf->prio = tmp_prio;
 
         if (atomic_read(&qedf->link_state) == QEDF_LINK_UP &&
             !qedf_dcbx_no_wait) {
             if (atomic_read(&qedf->link_down_tmo_valid) > 0)
                 queue_delayed_work(qedf->link_update_wq,
                     &qedf->link_recovery, 0);
             else
                 queue_delayed_work(qedf->link_update_wq,
                     &qedf->link_update, 0);
             atomic_set(&qedf->link_down_tmo_valid, 0);
         }
     }
 
 }
 
 static u32 qedf_get_login_failures(void *cookie)
 {
     struct qedf_ctx *qedf;
 
     qedf = (struct qedf_ctx *)cookie;
     return qedf->flogi_failed;
 }
 
 static struct qed_fcoe_cb_ops qedf_cb_ops = {
     {
         .link_update = qedf_link_update,
         .bw_update = qedf_bw_update,
         .schedule_recovery_handler = qedf_schedule_recovery_handler,
         .dcbx_aen = qedf_dcbx_handler,
         .get_generic_tlv_data = qedf_get_generic_tlv_data,
         .get_protocol_tlv_data = qedf_get_protocol_tlv_data,
         .schedule_hw_err_handler = qedf_schedule_hw_err_handler,
     }
 };
 
 /*
  * Various transport templates.
  */
 
 static struct scsi_transport_template *qedf_fc_transport_template;
 static struct scsi_transport_template *qedf_fc_vport_transport_template;
 
 /*
  * SCSI EH handlers
  */
 static int qedf_eh_abort(struct scsi_cmnd *sc_cmd)
 {
     struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device));
     struct fc_lport *lport;
     struct qedf_ctx *qedf;
     struct qedf_ioreq *io_req;
     struct fc_rport_libfc_priv *rp = rport->dd_data;
     struct fc_rport_priv *rdata;
     struct qedf_rport *fcport = NULL;
     int rc = FAILED;
     int wait_count = 100;
     int refcount = 0;
     int rval;
     int got_ref = 0;
 
     lport = shost_priv(sc_cmd->device->host);
     qedf = (struct qedf_ctx *)lport_priv(lport);
 
     /* rport and tgt are allocated together, so tgt should be non-NULL */
     fcport = (struct qedf_rport *)&rp[1];
     rdata = fcport->rdata;
     if (!rdata || !kref_get_unless_zero(&rdata->kref)) {
         QEDF_ERR(&qedf->dbg_ctx, "stale rport, sc_cmd=%p\n", sc_cmd);
         rc = SUCCESS;
         goto out;
     }
 
 
     io_req = qedf_priv(sc_cmd)->io_req;
     if (!io_req) {
         QEDF_ERR(&qedf->dbg_ctx,
              "sc_cmd not queued with lld, sc_cmd=%p op=0x%02x, port_id=%06x\n",
              sc_cmd, sc_cmd->cmnd[0],
              rdata->ids.port_id);
         rc = SUCCESS;
         goto drop_rdata_kref;
     }
 
     rval = kref_get_unless_zero(&io_req->refcount); /* ID: 005 */
     if (rval)
         got_ref = 1;
 
     /* If we got a valid io_req, confirm it belongs to this sc_cmd. */
     if (!rval || io_req->sc_cmd != sc_cmd) {
         QEDF_ERR(&qedf->dbg_ctx,
              "Freed/Incorrect io_req, io_req->sc_cmd=%p, sc_cmd=%p, port_id=%06x, bailing out.\n",
              io_req->sc_cmd, sc_cmd, rdata->ids.port_id);
 
         goto drop_rdata_kref;
     }
 
     if (fc_remote_port_chkready(rport)) {
         refcount = kref_read(&io_req->refcount);
         QEDF_ERR(&qedf->dbg_ctx,
              "rport not ready, io_req=%p, xid=0x%x sc_cmd=%p op=0x%02x, refcount=%d, port_id=%06x\n",
              io_req, io_req->xid, sc_cmd, sc_cmd->cmnd[0],
              refcount, rdata->ids.port_id);
 
         goto drop_rdata_kref;
     }
 
     rc = fc_block_scsi_eh(sc_cmd);
     if (rc)
         goto drop_rdata_kref;
 
     if (test_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags)) {
         QEDF_ERR(&qedf->dbg_ctx,
              "Connection uploading, xid=0x%x., port_id=%06x\n",
              io_req->xid, rdata->ids.port_id);
         while (io_req->sc_cmd && (wait_count != 0)) {
             msleep(100);
             wait_count--;
         }
         if (wait_count) {
             QEDF_ERR(&qedf->dbg_ctx, "ABTS succeeded\n");
             rc = SUCCESS;
         } else {
             QEDF_ERR(&qedf->dbg_ctx, "ABTS failed\n");
             rc = FAILED;
         }
         goto drop_rdata_kref;
     }
 
     if (lport->state != LPORT_ST_READY || !(lport->link_up)) {
         QEDF_ERR(&qedf->dbg_ctx, "link not ready.\n");
         goto drop_rdata_kref;
     }
 
     QEDF_ERR(&qedf->dbg_ctx,
          "Aborting io_req=%p sc_cmd=%p xid=0x%x fp_idx=%d, port_id=%06x.\n",
          io_req, sc_cmd, io_req->xid, io_req->fp_idx,
          rdata->ids.port_id);
 
     if (qedf->stop_io_on_error) {
         qedf_stop_all_io(qedf);
         rc = SUCCESS;
         goto drop_rdata_kref;
     }
 
     init_completion(&io_req->abts_done);
     rval = qedf_initiate_abts(io_req, true);
     if (rval) {
         QEDF_ERR(&(qedf->dbg_ctx), "Failed to queue ABTS.\n");
         /*
          * If we fail to queue the ABTS then return this command to
          * the SCSI layer as it will own and free the xid
          */
         rc = SUCCESS;
         qedf_scsi_done(qedf, io_req, DID_ERROR);
         goto drop_rdata_kref;
     }
 
     wait_for_completion(&io_req->abts_done);
 
     if (io_req->event == QEDF_IOREQ_EV_ABORT_SUCCESS ||
         io_req->event == QEDF_IOREQ_EV_ABORT_FAILED ||
         io_req->event == QEDF_IOREQ_EV_CLEANUP_SUCCESS) {
         /*
          * If we get a reponse to the abort this is success from
          * the perspective that all references to the command have
          * been removed from the driver and firmware
          */
         rc = SUCCESS;
     } else {
         /* If the abort and cleanup failed then return a failure */
         rc = FAILED;
     }
 
     if (rc == SUCCESS)
         QEDF_ERR(&(qedf->dbg_ctx), "ABTS succeeded, xid=0x%x.\n",
               io_req->xid);
     else
         QEDF_ERR(&(qedf->dbg_ctx), "ABTS failed, xid=0x%x.\n",
               io_req->xid);
 
 drop_rdata_kref:
     kref_put(&rdata->kref, fc_rport_destroy);
 out:
     if (got_ref)
         kref_put(&io_req->refcount, qedf_release_cmd);
     return rc;
 }
 
 static int qedf_eh_target_reset(struct scsi_cmnd *sc_cmd)
 {
     QEDF_ERR(NULL, "%d:0:%d:%lld: TARGET RESET Issued...",
          sc_cmd->device->host->host_no, sc_cmd->device->id,
          sc_cmd->device->lun);
     return qedf_initiate_tmf(sc_cmd, FCP_TMF_TGT_RESET);
 }
 
 static int qedf_eh_device_reset(struct scsi_cmnd *sc_cmd)
 {
     QEDF_ERR(NULL, "%d:0:%d:%lld: LUN RESET Issued... ",
          sc_cmd->device->host->host_no, sc_cmd->device->id,
          sc_cmd->device->lun);
     return qedf_initiate_tmf(sc_cmd, FCP_TMF_LUN_RESET);
 }
 
 bool qedf_wait_for_upload(struct qedf_ctx *qedf)
 {
     struct qedf_rport *fcport;
     int wait_cnt = 120;
 
     while (wait_cnt--) {
         if (atomic_read(&qedf->num_offloads))
             QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
                   "Waiting for all uploads to complete num_offloads = 0x%x.\n",
                   atomic_read(&qedf->num_offloads));
         else
             return true;
         msleep(500);
     }
 
     rcu_read_lock();
     list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
         if (test_bit(QEDF_RPORT_SESSION_READY,
                        &fcport->flags)) {
             if (fcport->rdata)
                 QEDF_ERR(&qedf->dbg_ctx,
                      "Waiting for fcport %p portid=%06x.\n",
                      fcport, fcport->rdata->ids.port_id);
             } else {
                 QEDF_ERR(&qedf->dbg_ctx,
                      "Waiting for fcport %p.\n", fcport);
             }
     }
 
     rcu_read_unlock();
     return false;
 }
 
 /* Performs soft reset of qedf_ctx by simulating a link down/up */
 void qedf_ctx_soft_reset(struct fc_lport *lport)
 {
     struct qedf_ctx *qedf;
     struct qed_link_output if_link;
 
     if (lport->vport) {
         printk_ratelimited("Cannot issue host reset on NPIV port.\n");
         return;
     }
 
     qedf = lport_priv(lport);
 
     qedf->flogi_pending = 0;
     /* For host reset, essentially do a soft link up/down */
     atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
     QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
           "Queuing link down work.\n");
     queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
         0);
 
     if (qedf_wait_for_upload(qedf) == false) {
         QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n");
         WARN_ON(atomic_read(&qedf->num_offloads));
     }
 
     /* Before setting link up query physical link state */
     qed_ops->common->get_link(qedf->cdev, &if_link);
     /* Bail if the physical link is not up */
     if (!if_link.link_up) {
         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
               "Physical link is not up.\n");
         return;
     }
     /* Flush and wait to make sure link down is processed */
     flush_delayed_work(&qedf->link_update);
     msleep(500);
 
     atomic_set(&qedf->link_state, QEDF_LINK_UP);
     qedf->vlan_id  = 0;
     QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
           "Queue link up work.\n");
     queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
         0);
 }
 
 /* Reset the host by gracefully logging out and then logging back in */
 static int qedf_eh_host_reset(struct scsi_cmnd *sc_cmd)
 {
     struct fc_lport *lport;
     struct qedf_ctx *qedf;
 
     lport = shost_priv(sc_cmd->device->host);
     qedf = lport_priv(lport);
 
     if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN ||
         test_bit(QEDF_UNLOADING, &qedf->flags))
         return FAILED;
 
     QEDF_ERR(&(qedf->dbg_ctx), "HOST RESET Issued...");
 
     qedf_ctx_soft_reset(lport);
 
     return SUCCESS;
 }
 
 static int qedf_slave_configure(struct scsi_device *sdev)
 {
     if (qedf_queue_depth) {
         scsi_change_queue_depth(sdev, qedf_queue_depth);
     }
 
     return 0;
 }
 
 static struct scsi_host_template qedf_host_template = {
     .module     = THIS_MODULE,
     .name       = QEDF_MODULE_NAME,
     .this_id    = -1,
     .cmd_per_lun    = 32,
     .max_sectors    = 0xffff,
     .queuecommand   = qedf_queuecommand,
     .shost_groups   = qedf_host_groups,
     .eh_abort_handler   = qedf_eh_abort,
     .eh_device_reset_handler = qedf_eh_device_reset, /* lun reset */
     .eh_target_reset_handler = qedf_eh_target_reset, /* target reset */
     .eh_host_reset_handler  = qedf_eh_host_reset,
     .slave_configure    = qedf_slave_configure,
     .dma_boundary = QED_HW_DMA_BOUNDARY,
     .sg_tablesize = QEDF_MAX_BDS_PER_CMD,
     .can_queue = FCOE_PARAMS_NUM_TASKS,
     .change_queue_depth = scsi_change_queue_depth,
     .cmd_size = sizeof(struct qedf_cmd_priv),
 };
 
 static int qedf_get_paged_crc_eof(struct sk_buff *skb, int tlen)
 {
     int rc;
 
     spin_lock(&qedf_global_lock);
     rc = fcoe_get_paged_crc_eof(skb, tlen, &qedf_global);
     spin_unlock(&qedf_global_lock);
 
     return rc;
 }
 
 static struct qedf_rport *qedf_fcport_lookup(struct qedf_ctx *qedf, u32 port_id)
 {
     struct qedf_rport *fcport;
     struct fc_rport_priv *rdata;
 
     rcu_read_lock();
     list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
         rdata = fcport->rdata;
         if (rdata == NULL)
             continue;
         if (rdata->ids.port_id == port_id) {
             rcu_read_unlock();
             return fcport;
         }
     }
     rcu_read_unlock();
 
     /* Return NULL to caller to let them know fcport was not found */
     return NULL;
 }
 
 /* Transmits an ELS frame over an offloaded session */
 static int qedf_xmit_l2_frame(struct qedf_rport *fcport, struct fc_frame *fp)
 {
     struct fc_frame_header *fh;
     int rc = 0;
 
     fh = fc_frame_header_get(fp);
     if ((fh->fh_type == FC_TYPE_ELS) &&
         (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
         switch (fc_frame_payload_op(fp)) {
         case ELS_ADISC:
             qedf_send_adisc(fcport, fp);
             rc = 1;
             break;
         }
     }
 
     return rc;
 }
 
 /*
  * qedf_xmit - qedf FCoE frame transmit function
  */
 static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp)
 {
     struct fc_lport     *base_lport;
     struct qedf_ctx     *qedf;
     struct ethhdr       *eh;
     struct fcoe_crc_eof *cp;
     struct sk_buff      *skb;
     struct fc_frame_header  *fh;
     struct fcoe_hdr     *hp;
     u8          sof, eof;
     u32         crc;
     unsigned int        hlen, tlen, elen;
     int         wlen;
     struct fc_lport *tmp_lport;
     struct fc_lport *vn_port = NULL;
     struct qedf_rport *fcport;
     int rc;
     u16 vlan_tci = 0;
 
     qedf = (struct qedf_ctx *)lport_priv(lport);
 
     fh = fc_frame_header_get(fp);
     skb = fp_skb(fp);
 
     /* Filter out traffic to other NPIV ports on the same host */
     if (lport->vport)
         base_lport = shost_priv(vport_to_shost(lport->vport));
     else
         base_lport = lport;
 
     /* Flag if the destination is the base port */
     if (base_lport->port_id == ntoh24(fh->fh_d_id)) {
         vn_port = base_lport;
     } else {
         /* Got through the list of vports attached to the base_lport
          * and see if we have a match with the destination address.
          */
         list_for_each_entry(tmp_lport, &base_lport->vports, list) {
             if (tmp_lport->port_id == ntoh24(fh->fh_d_id)) {
                 vn_port = tmp_lport;
                 break;
             }
         }
     }
     if (vn_port && ntoh24(fh->fh_d_id) != FC_FID_FLOGI) {
         struct fc_rport_priv *rdata = NULL;
 
         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
             "Dropping FCoE frame to %06x.\n", ntoh24(fh->fh_d_id));
         kfree_skb(skb);
         rdata = fc_rport_lookup(lport, ntoh24(fh->fh_d_id));
         if (rdata) {
             rdata->retries = lport->max_rport_retry_count;
             kref_put(&rdata->kref, fc_rport_destroy);
         }
         return -EINVAL;
     }
     /* End NPIV filtering */
 
     if (!qedf->ctlr.sel_fcf) {
         kfree_skb(skb);
         return 0;
     }
 
     if (!test_bit(QEDF_LL2_STARTED, &qedf->flags)) {
         QEDF_WARN(&(qedf->dbg_ctx), "LL2 not started\n");
         kfree_skb(skb);
         return 0;
     }
 
     if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
         QEDF_WARN(&(qedf->dbg_ctx), "qedf link down\n");
         kfree_skb(skb);
         return 0;
     }
 
     if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
         if (fcoe_ctlr_els_send(&qedf->ctlr, lport, skb))
             return 0;
     }
 
     /* Check to see if this needs to be sent on an offloaded session */
     fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
 
     if (fcport && test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
         rc = qedf_xmit_l2_frame(fcport, fp);
         /*
          * If the frame was successfully sent over the middle path
          * then do not try to also send it over the LL2 path
          */
         if (rc)
             return 0;
     }
 
     sof = fr_sof(fp);
     eof = fr_eof(fp);
 
     elen = sizeof(struct ethhdr);
     hlen = sizeof(struct fcoe_hdr);
     tlen = sizeof(struct fcoe_crc_eof);
     wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
 
     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 (qedf_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);
 
     /*
      * Add VLAN tag to non-offload FCoE frame based on current stored VLAN
      * for FIP/FCoE traffic.
      */
     __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), qedf->vlan_id);
 
     /* fill up mac and fcoe headers */
     eh = eth_hdr(skb);
     eh->h_proto = htons(ETH_P_FCOE);
     if (qedf->ctlr.map_dest)
         fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
     else
         /* insert GW address */
         ether_addr_copy(eh->h_dest, qedf->ctlr.dest_addr);
 
     /* Set the source MAC address */
     ether_addr_copy(eh->h_source, qedf->data_src_addr);
 
     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;
 
     /*update tx stats */
     this_cpu_inc(lport->stats->TxFrames);
     this_cpu_add(lport->stats->TxWords, wlen);
 
     /* Get VLAN ID from skb for printing purposes */
     __vlan_hwaccel_get_tag(skb, &vlan_tci);
 
     /* send down to lld */
     fr_dev(fp) = lport;
     QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame send: "
         "src=%06x dest=%06x r_ctl=%x type=%x vlan=%04x.\n",
         ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, fh->fh_type,
         vlan_tci);
     if (qedf_dump_frames)
         print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
             1, skb->data, skb->len, false);
     rc = qed_ops->ll2->start_xmit(qedf->cdev, skb, 0);
     if (rc) {
         QEDF_ERR(&qedf->dbg_ctx, "start_xmit failed rc = %d.\n", rc);
         kfree_skb(skb);
         return rc;
     }
 
     return 0;
 }
 
 static int qedf_alloc_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
 {
     int rval = 0;
     u32 *pbl;
     dma_addr_t page;
     int num_pages;
 
     /* Calculate appropriate queue and PBL sizes */
     fcport->sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
     fcport->sq_mem_size = ALIGN(fcport->sq_mem_size, QEDF_PAGE_SIZE);
     fcport->sq_pbl_size = (fcport->sq_mem_size / QEDF_PAGE_SIZE) *
         sizeof(void *);
     fcport->sq_pbl_size = fcport->sq_pbl_size + QEDF_PAGE_SIZE;
 
     fcport->sq = dma_alloc_coherent(&qedf->pdev->dev, fcport->sq_mem_size,
                     &fcport->sq_dma, GFP_KERNEL);
     if (!fcport->sq) {
         QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue.\n");
         rval = 1;
         goto out;
     }
 
     fcport->sq_pbl = dma_alloc_coherent(&qedf->pdev->dev,
                         fcport->sq_pbl_size,
                         &fcport->sq_pbl_dma, GFP_KERNEL);
     if (!fcport->sq_pbl) {
         QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue PBL.\n");
         rval = 1;
         goto out_free_sq;
     }
 
     /* Create PBL */
     num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE;
     page = fcport->sq_dma;
     pbl = (u32 *)fcport->sq_pbl;
 
     while (num_pages--) {
         *pbl = U64_LO(page);
         pbl++;
         *pbl = U64_HI(page);
         pbl++;
         page += QEDF_PAGE_SIZE;
     }
 
     return rval;
 
 out_free_sq:
     dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, fcport->sq,
         fcport->sq_dma);
 out:
     return rval;
 }
 
 static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
 {
     if (fcport->sq_pbl)
         dma_free_coherent(&qedf->pdev->dev, fcport->sq_pbl_size,
             fcport->sq_pbl, fcport->sq_pbl_dma);
     if (fcport->sq)
         dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size,
             fcport->sq, fcport->sq_dma);
 }
 
 static int qedf_offload_connection(struct qedf_ctx *qedf,
     struct qedf_rport *fcport)
 {
     struct qed_fcoe_params_offload conn_info;
     u32 port_id;
     int rval;
     uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe));
 
     QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection "
            "portid=%06x.\n", fcport->rdata->ids.port_id);
     rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle,
         &fcport->fw_cid, &fcport->p_doorbell);
     if (rval) {
         QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection "
                "for portid=%06x.\n", fcport->rdata->ids.port_id);
         rval = 1; /* For some reason qed returns 0 on failure here */
         goto out;
     }
 
     QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x "
            "fw_cid=%08x handle=%d.\n", fcport->rdata->ids.port_id,
            fcport->fw_cid, fcport->handle);
 
     memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload));
 
     /* Fill in the offload connection info */
     conn_info.sq_pbl_addr = fcport->sq_pbl_dma;
 
     conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl);
     conn_info.sq_next_page_addr =
         (dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8));
 
     /* Need to use our FCoE MAC for the offload session */
     ether_addr_copy(conn_info.src_mac, qedf->data_src_addr);
 
     ether_addr_copy(conn_info.dst_mac, qedf->ctlr.dest_addr);
 
     conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size;
     conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov;
     conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */
     conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size;
 
     /* Set VLAN data */
     conn_info.vlan_tag = qedf->vlan_id <<
         FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT;
     conn_info.vlan_tag |=
         qedf->prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT;
     conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK <<
         FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT);
 
     /* Set host port source id */
     port_id = fc_host_port_id(qedf->lport->host);
     fcport->sid = port_id;
     conn_info.s_id.addr_hi = (port_id & 0x000000FF);
     conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8;
     conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16;
 
     conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq;
 
     /* Set remote port destination id */
     port_id = fcport->rdata->rport->port_id;
     conn_info.d_id.addr_hi = (port_id & 0x000000FF);
     conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8;
     conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16;
 
     conn_info.def_q_idx = 0; /* Default index for send queue? */
 
     /* Set FC-TAPE specific flags if needed */
     if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) {
         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN,
             "Enable CONF, REC for portid=%06x.\n",
             fcport->rdata->ids.port_id);
         conn_info.flags |= 1 <<
             FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT;
         conn_info.flags |=
             ((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) <<
             FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT;
     }
 
     rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info);
     if (rval) {
         QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection "
                "for portid=%06x.\n", fcport->rdata->ids.port_id);
         goto out_free_conn;
     } else
         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload "
                "succeeded portid=%06x total_sqe=%d.\n",
                fcport->rdata->ids.port_id, total_sqe);
 
     spin_lock_init(&fcport->rport_lock);
     atomic_set(&fcport->free_sqes, total_sqe);
     return 0;
 out_free_conn:
     qed_ops->release_conn(qedf->cdev, fcport->handle);
 out:
     return rval;
 }
 
 #define QEDF_TERM_BUFF_SIZE     10
 static void qedf_upload_connection(struct qedf_ctx *qedf,
     struct qedf_rport *fcport)
 {
     void *term_params;
     dma_addr_t term_params_dma;
 
     /* Term params needs to be a DMA coherent buffer as qed shared the
      * physical DMA address with the firmware. The buffer may be used in
      * the receive path so we may eventually have to move this.
      */
     term_params = dma_alloc_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE,
         &term_params_dma, GFP_KERNEL);
     if (!term_params)
         return;
 
     QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Uploading connection "
            "port_id=%06x.\n", fcport->rdata->ids.port_id);
 
     qed_ops->destroy_conn(qedf->cdev, fcport->handle, term_params_dma);
     qed_ops->release_conn(qedf->cdev, fcport->handle);
 
     dma_free_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, term_params,
         term_params_dma);
 }
 
 static void qedf_cleanup_fcport(struct qedf_ctx *qedf,
     struct qedf_rport *fcport)
 {
     struct fc_rport_priv *rdata = fcport->rdata;
 
     QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Cleaning up portid=%06x.\n",
         fcport->rdata->ids.port_id);
 
     /* Flush any remaining i/o's before we upload the connection */
     qedf_flush_active_ios(fcport, -1);
 
     if (test_and_clear_bit(QEDF_RPORT_SESSION_READY, &fcport->flags))
         qedf_upload_connection(qedf, fcport);
     qedf_free_sq(qedf, fcport);
     fcport->rdata = NULL;
     fcport->qedf = NULL;
     kref_put(&rdata->kref, fc_rport_destroy);
 }
 
 /*
  * This event_callback is called after successful completion of libfc
  * initiated target login. qedf can proceed with initiating the session
  * establishment.
  */
 static void qedf_rport_event_handler(struct fc_lport *lport,
                 struct fc_rport_priv *rdata,
                 enum fc_rport_event event)
 {
     struct qedf_ctx *qedf = lport_priv(lport);
     struct fc_rport *rport = rdata->rport;
     struct fc_rport_libfc_priv *rp;
     struct qedf_rport *fcport;
     u32 port_id;
     int rval;
     unsigned long flags;
 
     QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "event = %d, "
            "port_id = 0x%x\n", event, rdata->ids.port_id);
 
     switch (event) {
     case RPORT_EV_READY:
         if (!rport) {
             QEDF_WARN(&(qedf->dbg_ctx), "rport is NULL.\n");
             break;
         }
 
         rp = rport->dd_data;
         fcport = (struct qedf_rport *)&rp[1];
         fcport->qedf = qedf;
 
         if (atomic_read(&qedf->num_offloads) >= QEDF_MAX_SESSIONS) {
             QEDF_ERR(&(qedf->dbg_ctx), "Not offloading "
                 "portid=0x%x as max number of offloaded sessions "
                 "reached.\n", rdata->ids.port_id);
             return;
         }
 
         /*
          * Don't try to offload the session again. Can happen when we
          * get an ADISC
          */
         if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
             QEDF_WARN(&(qedf->dbg_ctx), "Session already "
                    "offloaded, portid=0x%x.\n",
                    rdata->ids.port_id);
             return;
         }
 
         if (rport->port_id == FC_FID_DIR_SERV) {
             /*
              * qedf_rport structure doesn't exist for
              * directory server.
              * We should not come here, as lport will
              * take care of fabric login
              */
             QEDF_WARN(&(qedf->dbg_ctx), "rport struct does not "
                 "exist for dir server port_id=%x\n",
                 rdata->ids.port_id);
             break;
         }
 
         if (rdata->spp_type != FC_TYPE_FCP) {
             QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
                 "Not offloading since spp type isn't FCP\n");
             break;
         }
         if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) {
             QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
                 "Not FCP target so not offloading\n");
             break;
         }
 
         /* Initial reference held on entry, so this can't fail */
         kref_get(&rdata->kref);
         fcport->rdata = rdata;
         fcport->rport = rport;
 
         rval = qedf_alloc_sq(qedf, fcport);
         if (rval) {
             qedf_cleanup_fcport(qedf, fcport);
             break;
         }
 
         /* Set device type */
         if (rdata->flags & FC_RP_FLAGS_RETRY &&
             rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET &&
             !(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) {
             fcport->dev_type = QEDF_RPORT_TYPE_TAPE;
             QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
                 "portid=%06x is a TAPE device.\n",
                 rdata->ids.port_id);
         } else {
             fcport->dev_type = QEDF_RPORT_TYPE_DISK;
         }
 
         rval = qedf_offload_connection(qedf, fcport);
         if (rval) {
             qedf_cleanup_fcport(qedf, fcport);
             break;
         }
 
         /* Add fcport to list of qedf_ctx list of offloaded ports */
         spin_lock_irqsave(&qedf->hba_lock, flags);
         list_add_rcu(&fcport->peers, &qedf->fcports);
         spin_unlock_irqrestore(&qedf->hba_lock, flags);
 
         /*
          * Set the session ready bit to let everyone know that this
          * connection is ready for I/O
          */
         set_bit(QEDF_RPORT_SESSION_READY, &fcport->flags);
         atomic_inc(&qedf->num_offloads);
 
         break;
     case RPORT_EV_LOGO:
     case RPORT_EV_FAILED:
     case RPORT_EV_STOP:
         port_id = rdata->ids.port_id;
         if (port_id == FC_FID_DIR_SERV)
             break;
 
         if (rdata->spp_type != FC_TYPE_FCP) {
             QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
                 "No action since spp type isn't FCP\n");
             break;
         }
         if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) {
             QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
                 "Not FCP target so no action\n");
             break;
         }
 
         if (!rport) {
             QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
                 "port_id=%x - rport notcreated Yet!!\n", port_id);
             break;
         }
         rp = rport->dd_data;
         /*
          * Perform session upload. Note that rdata->peers is already
          * removed from disc->rports list before we get this event.
          */
         fcport = (struct qedf_rport *)&rp[1];
 
         spin_lock_irqsave(&fcport->rport_lock, flags);
         /* Only free this fcport if it is offloaded already */
         if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags) &&
             !test_bit(QEDF_RPORT_UPLOADING_CONNECTION,
             &fcport->flags)) {
             set_bit(QEDF_RPORT_UPLOADING_CONNECTION,
                 &fcport->flags);
             spin_unlock_irqrestore(&fcport->rport_lock, flags);
             qedf_cleanup_fcport(qedf, fcport);
             /*
              * Remove fcport to list of qedf_ctx list of offloaded
              * ports
              */
             spin_lock_irqsave(&qedf->hba_lock, flags);
             list_del_rcu(&fcport->peers);
             spin_unlock_irqrestore(&qedf->hba_lock, flags);
 
             clear_bit(QEDF_RPORT_UPLOADING_CONNECTION,
                 &fcport->flags);
             atomic_dec(&qedf->num_offloads);
         } else {
             spin_unlock_irqrestore(&fcport->rport_lock, flags);
         }
         break;
 
     case RPORT_EV_NONE:
         break;
     }
 }
 
 static void qedf_abort_io(struct fc_lport *lport)
 {
     /* NO-OP but need to fill in the template */
 }
 
 static void qedf_fcp_cleanup(struct fc_lport *lport)
 {
     /*
      * NO-OP but need to fill in template to prevent a NULL
      * function pointer dereference during link down. I/Os
      * will be flushed when port is uploaded.
      */
 }
 
 static struct libfc_function_template qedf_lport_template = {
     .frame_send     = qedf_xmit,
     .fcp_abort_io       = qedf_abort_io,
     .fcp_cleanup        = qedf_fcp_cleanup,
     .rport_event_callback   = qedf_rport_event_handler,
     .elsct_send     = qedf_elsct_send,
 };
 
 static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf)
 {
     fcoe_ctlr_init(&qedf->ctlr, FIP_MODE_AUTO);
 
     qedf->ctlr.send = qedf_fip_send;
     qedf->ctlr.get_src_addr = qedf_get_src_mac;
     ether_addr_copy(qedf->ctlr.ctl_src_addr, qedf->mac);
 }
 
 static void qedf_setup_fdmi(struct qedf_ctx *qedf)
 {
     struct fc_lport *lport = qedf->lport;
     u8 buf[8];
     int pos;
     uint32_t i;
 
     /*
      * fdmi_enabled needs to be set for libfc
      * to execute FDMI registration
      */
     lport->fdmi_enabled = 1;
 
     /*
      * Setup the necessary fc_host attributes to that will be used to fill
      * in the FDMI information.
      */
 
     /* Get the PCI-e Device Serial Number Capability */
     pos = pci_find_ext_capability(qedf->pdev, PCI_EXT_CAP_ID_DSN);
     if (pos) {
         pos += 4;
         for (i = 0; i < 8; i++)
             pci_read_config_byte(qedf->pdev, pos + i, &buf[i]);
 
         snprintf(fc_host_serial_number(lport->host),
             FC_SERIAL_NUMBER_SIZE,
             "%02X%02X%02X%02X%02X%02X%02X%02X",
             buf[7], buf[6], buf[5], buf[4],
             buf[3], buf[2], buf[1], buf[0]);
     } else
         snprintf(fc_host_serial_number(lport->host),
             FC_SERIAL_NUMBER_SIZE, "Unknown");
 
     snprintf(fc_host_manufacturer(lport->host),
         FC_SERIAL_NUMBER_SIZE, "%s", "Marvell Semiconductor Inc.");
 
     if (qedf->pdev->device == QL45xxx) {
         snprintf(fc_host_model(lport->host),
             FC_SYMBOLIC_NAME_SIZE, "%s", "QL45xxx");
 
         snprintf(fc_host_model_description(lport->host),
             FC_SYMBOLIC_NAME_SIZE, "%s",
             "Marvell FastLinQ QL45xxx FCoE Adapter");
     }
 
     if (qedf->pdev->device == QL41xxx) {
         snprintf(fc_host_model(lport->host),
             FC_SYMBOLIC_NAME_SIZE, "%s", "QL41xxx");
 
         snprintf(fc_host_model_description(lport->host),
             FC_SYMBOLIC_NAME_SIZE, "%s",
             "Marvell FastLinQ QL41xxx FCoE Adapter");
     }
 
     snprintf(fc_host_hardware_version(lport->host),
         FC_VERSION_STRING_SIZE, "Rev %d", qedf->pdev->revision);
 
     snprintf(fc_host_driver_version(lport->host),
         FC_VERSION_STRING_SIZE, "%s", QEDF_VERSION);
 
     snprintf(fc_host_firmware_version(lport->host),
         FC_VERSION_STRING_SIZE, "%d.%d.%d.%d",
         FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION,
         FW_ENGINEERING_VERSION);
 
     snprintf(fc_host_vendor_identifier(lport->host),
         FC_VENDOR_IDENTIFIER, "%s", "Marvell");
 
 }
 
 static int qedf_lport_setup(struct qedf_ctx *qedf)
 {
     struct fc_lport *lport = qedf->lport;
 
     lport->link_up = 0;
     lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
     lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
     lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
         FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
     lport->boot_time = jiffies;
     lport->e_d_tov = 2 * 1000;
     lport->r_a_tov = 10 * 1000;
 
     /* Set NPIV support */
     lport->does_npiv = 1;
     fc_host_max_npiv_vports(lport->host) = QEDF_MAX_NPIV;
 
     fc_set_wwnn(lport, qedf->wwnn);
     fc_set_wwpn(lport, qedf->wwpn);
 
     if (fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0)) {
         QEDF_ERR(&qedf->dbg_ctx,
              "fcoe_libfc_config failed.\n");
         return -ENOMEM;
     }
 
     /* Allocate the exchange manager */
     fc_exch_mgr_alloc(lport, FC_CLASS_3, FCOE_PARAMS_NUM_TASKS,
               0xfffe, NULL);
 
     if (fc_lport_init_stats(lport))
         return -ENOMEM;
 
     /* Finish lport config */
     fc_lport_config(lport);
 
     /* Set max frame size */
     fc_set_mfs(lport, QEDF_MFS);
     fc_host_maxframe_size(lport->host) = lport->mfs;
 
     /* Set default dev_loss_tmo based on module parameter */
     fc_host_dev_loss_tmo(lport->host) = qedf_dev_loss_tmo;
 
     /* Set symbolic node name */
     if (qedf->pdev->device == QL45xxx)
         snprintf(fc_host_symbolic_name(lport->host), 256,
             "Marvell FastLinQ 45xxx FCoE v%s", QEDF_VERSION);
 
     if (qedf->pdev->device == QL41xxx)
         snprintf(fc_host_symbolic_name(lport->host), 256,
             "Marvell FastLinQ 41xxx FCoE v%s", QEDF_VERSION);
 
     qedf_setup_fdmi(qedf);
 
     return 0;
 }
 
 /*
  * NPIV functions
  */
 
 static int qedf_vport_libfc_config(struct fc_vport *vport,
     struct fc_lport *lport)
 {
     lport->link_up = 0;
     lport->qfull = 0;
     lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
     lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
     lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
         FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
     lport->boot_time = jiffies;
     lport->e_d_tov = 2 * 1000;
     lport->r_a_tov = 10 * 1000;
     lport->does_npiv = 1; /* Temporary until we add NPIV support */
 
     /* Allocate stats for vport */
     if (fc_lport_init_stats(lport))
         return -ENOMEM;
 
     /* Finish lport config */
     fc_lport_config(lport);
 
     /* offload related configuration */
     lport->crc_offload = 0;
     lport->seq_offload = 0;
     lport->lro_enabled = 0;
     lport->lro_xid = 0;
     lport->lso_max = 0;
 
     return 0;
 }
 
 static int qedf_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 fc_lport *vn_port;
     struct qedf_ctx *base_qedf = lport_priv(n_port);
     struct qedf_ctx *vport_qedf;
 
     char buf[32];
     int rc = 0;
 
     rc = fcoe_validate_vport_create(vport);
     if (rc) {
         fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
         QEDF_WARN(&(base_qedf->dbg_ctx), "Failed to create vport, "
                "WWPN (0x%s) already exists.\n", buf);
         return rc;
     }
 
     if (atomic_read(&base_qedf->link_state) != QEDF_LINK_UP) {
         QEDF_WARN(&(base_qedf->dbg_ctx), "Cannot create vport "
                "because link is not up.\n");
         return -EIO;
     }
 
     vn_port = libfc_vport_create(vport, sizeof(struct qedf_ctx));
     if (!vn_port) {
         QEDF_WARN(&(base_qedf->dbg_ctx), "Could not create lport "
                "for vport.\n");
         return -ENOMEM;
     }
 
     fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
     QEDF_ERR(&(base_qedf->dbg_ctx), "Creating NPIV port, WWPN=%s.\n",
         buf);
 
     /* Copy some fields from base_qedf */
     vport_qedf = lport_priv(vn_port);
     memcpy(vport_qedf, base_qedf, sizeof(struct qedf_ctx));
 
     /* Set qedf data specific to this vport */
     vport_qedf->lport = vn_port;
     /* Use same hba_lock as base_qedf */
     vport_qedf->hba_lock = base_qedf->hba_lock;
     vport_qedf->pdev = base_qedf->pdev;
     vport_qedf->cmd_mgr = base_qedf->cmd_mgr;
     init_completion(&vport_qedf->flogi_compl);
     INIT_LIST_HEAD(&vport_qedf->fcports);
     INIT_DELAYED_WORK(&vport_qedf->stag_work, qedf_stag_change_work);
 
     rc = qedf_vport_libfc_config(vport, vn_port);
     if (rc) {
         QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory "
             "for lport stats.\n");
         goto err;
     }
 
     fc_set_wwnn(vn_port, vport->node_name);
     fc_set_wwpn(vn_port, vport->port_name);
     vport_qedf->wwnn = vn_port->wwnn;
     vport_qedf->wwpn = vn_port->wwpn;
 
     vn_port->host->transportt = qedf_fc_vport_transport_template;
     vn_port->host->can_queue = FCOE_PARAMS_NUM_TASKS;
     vn_port->host->max_lun = qedf_max_lun;
     vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD;
     vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN;
     vn_port->host->max_id = QEDF_MAX_SESSIONS;
 
     rc = scsi_add_host(vn_port->host, &vport->dev);
     if (rc) {
         QEDF_WARN(&base_qedf->dbg_ctx,
               "Error adding Scsi_Host rc=0x%x.\n", rc);
         goto err;
     }
 
     /* Set default dev_loss_tmo based on module parameter */
     fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo;
 
     /* Init libfc stuffs */
     memcpy(&vn_port->tt, &qedf_lport_template,
         sizeof(qedf_lport_template));
     fc_exch_init(vn_port);
     fc_elsct_init(vn_port);
     fc_lport_init(vn_port);
     fc_disc_init(vn_port);
     fc_disc_config(vn_port, vn_port);
 
 
     /* Allocate the exchange manager */
     shost = vport_to_shost(vport);
     n_port = shost_priv(shost);
     fc_exch_mgr_list_clone(n_port, vn_port);
 
     /* Set max frame size */
     fc_set_mfs(vn_port, QEDF_MFS);
 
     fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN;
 
     if (disabled) {
         fc_vport_set_state(vport, FC_VPORT_DISABLED);
     } else {
         vn_port->boot_time = jiffies;
         fc_fabric_login(vn_port);
         fc_vport_setlink(vn_port);
     }
 
     QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n",
            vn_port);
 
     /* Set up debug context for vport */
     vport_qedf->dbg_ctx.host_no = vn_port->host->host_no;
     vport_qedf->dbg_ctx.pdev = base_qedf->pdev;
 
     return 0;
 
 err:
     scsi_host_put(vn_port->host);
     return rc;
 }
 
 static int qedf_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 qedf_ctx *qedf = lport_priv(vn_port);
 
     if (!qedf) {
         QEDF_ERR(NULL, "qedf is NULL.\n");
         goto out;
     }
 
     /* Set unloading bit on vport qedf_ctx to prevent more I/O */
     set_bit(QEDF_UNLOADING, &qedf->flags);
 
     mutex_lock(&n_port->lp_mutex);
     list_del(&vn_port->list);
     mutex_unlock(&n_port->lp_mutex);
 
     fc_fabric_logoff(vn_port);
     fc_lport_destroy(vn_port);
 
     /* Detach from scsi-ml */
     fc_remove_host(vn_port->host);
     scsi_remove_host(vn_port->host);
 
     /*
      * Only try to release the exchange manager if the vn_port
      * configuration is complete.
      */
     if (vn_port->state == LPORT_ST_READY)
         fc_exch_mgr_free(vn_port);
 
     /* Free memory used by statistical counters */
     fc_lport_free_stats(vn_port);
 
     /* Release Scsi_Host */
     scsi_host_put(vn_port->host);
 
 out:
     return 0;
 }
 
 static int qedf_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;
 }
 
 /*
  * During removal we need to wait for all the vports associated with a port
  * to be destroyed so we avoid a race condition where libfc is still trying
  * to reap vports while the driver remove function has already reaped the
  * driver contexts associated with the physical port.
  */
 static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf)
 {
     struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host);
 
     QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
         "Entered.\n");
     while (fc_host->npiv_vports_inuse > 0) {
         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
             "Waiting for all vports to be reaped.\n");
         msleep(1000);
     }
 }
 
 /**
  * qedf_fcoe_reset - Resets the fcoe
  *
  * @shost: shost the reset is from
  *
  * Returns: always 0
  */
 static int qedf_fcoe_reset(struct Scsi_Host *shost)
 {
     struct fc_lport *lport = shost_priv(shost);
 
     qedf_ctx_soft_reset(lport);
     return 0;
 }
 
 static void qedf_get_host_port_id(struct Scsi_Host *shost)
 {
     struct fc_lport *lport = shost_priv(shost);
 
     fc_host_port_id(shost) = lport->port_id;
 }
 
 static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host
     *shost)
 {
     struct fc_host_statistics *qedf_stats;
     struct fc_lport *lport = shost_priv(shost);
     struct qedf_ctx *qedf = lport_priv(lport);
     struct qed_fcoe_stats *fw_fcoe_stats;
 
     qedf_stats = fc_get_host_stats(shost);
 
     /* We don't collect offload stats for specific NPIV ports */
     if (lport->vport)
         goto out;
 
     fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL);
     if (!fw_fcoe_stats) {
         QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for "
             "fw_fcoe_stats.\n");
         goto out;
     }
 
     mutex_lock(&qedf->stats_mutex);
 
     /* Query firmware for offload stats */
     qed_ops->get_stats(qedf->cdev, fw_fcoe_stats);
 
     /*
      * The expectation is that we add our offload stats to the stats
      * being maintained by libfc each time the fc_get_host_status callback
      * is invoked. The additions are not carried over for each call to
      * the fc_get_host_stats callback.
      */
     qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt +
         fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt +
         fw_fcoe_stats->fcoe_tx_other_pkt_cnt;
     qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt +
         fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt +
         fw_fcoe_stats->fcoe_rx_other_pkt_cnt;
     qedf_stats->fcp_input_megabytes +=
         do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000);
     qedf_stats->fcp_output_megabytes +=
         do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000);
     qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4;
     qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4;
     qedf_stats->invalid_crc_count +=
         fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt;
     qedf_stats->dumped_frames =
         fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
     qedf_stats->error_frames +=
         fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
     qedf_stats->fcp_input_requests += qedf->input_requests;
     qedf_stats->fcp_output_requests += qedf->output_requests;
     qedf_stats->fcp_control_requests += qedf->control_requests;
     qedf_stats->fcp_packet_aborts += qedf->packet_aborts;
     qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures;
 
     mutex_unlock(&qedf->stats_mutex);
     kfree(fw_fcoe_stats);
 out:
     return qedf_stats;
 }
 
 static struct fc_function_template qedf_fc_transport_fn = {
     .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,
 
     .get_host_port_id = qedf_get_host_port_id,
     .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,
 
     /*
      * Tell FC transport to allocate enough space to store the backpointer
      * for the associate qedf_rport struct.
      */
     .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
                 sizeof(struct qedf_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 = qedf_fc_get_host_stats,
     .issue_fc_host_lip = qedf_fcoe_reset,
     .vport_create = qedf_vport_create,
     .vport_delete = qedf_vport_destroy,
     .vport_disable = qedf_vport_disable,
     .bsg_request = fc_lport_bsg_request,
 };
 
 static struct fc_function_template qedf_fc_vport_transport_fn = {
     .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 qedf_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 = qedf_fcoe_reset,
     .bsg_request = fc_lport_bsg_request,
 };
 
 static bool qedf_fp_has_work(struct qedf_fastpath *fp)
 {
     struct qedf_ctx *qedf = fp->qedf;
     struct global_queue *que;
     struct qed_sb_info *sb_info = fp->sb_info;
     struct status_block *sb = sb_info->sb_virt;
     u16 prod_idx;
 
     /* Get the pointer to the global CQ this completion is on */
     que = qedf->global_queues[fp->sb_id];
 
     /* Be sure all responses have been written to PI */
     rmb();
 
     /* Get the current firmware producer index */
     prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
 
     return (que->cq_prod_idx != prod_idx);
 }
 
 /*
  * Interrupt handler code.
  */
 
 /* Process completion queue and copy CQE contents for deferred processesing
  *
  * Return true if we should wake the I/O thread, false if not.
  */
 static bool qedf_process_completions(struct qedf_fastpath *fp)
 {
     struct qedf_ctx *qedf = fp->qedf;
     struct qed_sb_info *sb_info = fp->sb_info;
     struct status_block *sb = sb_info->sb_virt;
     struct global_queue *que;
     u16 prod_idx;
     struct fcoe_cqe *cqe;
     struct qedf_io_work *io_work;
     int num_handled = 0;
     unsigned int cpu;
     struct qedf_ioreq *io_req = NULL;
     u16 xid;
     u16 new_cqes;
     u32 comp_type;
 
     /* Get the current firmware producer index */
     prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
 
     /* Get the pointer to the global CQ this completion is on */
     que = qedf->global_queues[fp->sb_id];
 
     /* Calculate the amount of new elements since last processing */
     new_cqes = (prod_idx >= que->cq_prod_idx) ?
         (prod_idx - que->cq_prod_idx) :
         0x10000 - que->cq_prod_idx + prod_idx;
 
     /* Save producer index */
     que->cq_prod_idx = prod_idx;
 
     while (new_cqes) {
         fp->completions++;
         num_handled++;
         cqe = &que->cq[que->cq_cons_idx];
 
         comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
             FCOE_CQE_CQE_TYPE_MASK;
 
         /*
          * Process unsolicited CQEs directly in the interrupt handler
          * sine we need the fastpath ID
          */
         if (comp_type == FCOE_UNSOLIC_CQE_TYPE) {
             QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL,
                "Unsolicated CQE.\n");
             qedf_process_unsol_compl(qedf, fp->sb_id, cqe);
             /*
              * Don't add a work list item.  Increment consumer
              * consumer index and move on.
              */
             goto inc_idx;
         }
 
         xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
         io_req = &qedf->cmd_mgr->cmds[xid];
 
         /*
          * Figure out which percpu thread we should queue this I/O
          * on.
          */
         if (!io_req)
             /* If there is not io_req assocated with this CQE
              * just queue it on CPU 0
              */
             cpu = 0;
         else {
             cpu = io_req->cpu;
             io_req->int_cpu = smp_processor_id();
         }
 
         io_work = mempool_alloc(qedf->io_mempool, GFP_ATOMIC);
         if (!io_work) {
             QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate "
                    "work for I/O completion.\n");
             continue;
         }
         memset(io_work, 0, sizeof(struct qedf_io_work));
 
         INIT_WORK(&io_work->work, qedf_fp_io_handler);
 
         /* Copy contents of CQE for deferred processing */
         memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe));
 
         io_work->qedf = fp->qedf;
         io_work->fp = NULL; /* Only used for unsolicited frames */
 
         queue_work_on(cpu, qedf_io_wq, &io_work->work);
 
 inc_idx:
         que->cq_cons_idx++;
         if (que->cq_cons_idx == fp->cq_num_entries)
             que->cq_cons_idx = 0;
         new_cqes--;
     }
 
     return true;
 }
 
 
 /* MSI-X fastpath handler code */
 static irqreturn_t qedf_msix_handler(int irq, void *dev_id)
 {
     struct qedf_fastpath *fp = dev_id;
 
     if (!fp) {
         QEDF_ERR(NULL, "fp is null.\n");
         return IRQ_HANDLED;
     }
     if (!fp->sb_info) {
         QEDF_ERR(NULL, "fp->sb_info in null.");
         return IRQ_HANDLED;
     }
 
     /*
      * Disable interrupts for this status block while we process new
      * completions
      */
     qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/);
 
     while (1) {
         qedf_process_completions(fp);
 
         if (qedf_fp_has_work(fp) == 0) {
             /* Update the sb information */
             qed_sb_update_sb_idx(fp->sb_info);
 
             /* Check for more work */
             rmb();
 
             if (qedf_fp_has_work(fp) == 0) {
                 /* Re-enable interrupts */
                 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1);
                 return IRQ_HANDLED;
             }
         }
     }
 
     /* Do we ever want to break out of above loop? */
     return IRQ_HANDLED;
 }
 
 /* simd handler for MSI/INTa */
 static void qedf_simd_int_handler(void *cookie)
 {
     /* Cookie is qedf_ctx struct */
     struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
 
     QEDF_WARN(&(qedf->dbg_ctx), "qedf=%p.\n", qedf);
 }
 
 #define QEDF_SIMD_HANDLER_NUM       0
 static void qedf_sync_free_irqs(struct qedf_ctx *qedf)
 {
     int i;
     u16 vector_idx = 0;
     u32 vector;
 
     if (qedf->int_info.msix_cnt) {
         for (i = 0; i < qedf->int_info.used_cnt; i++) {
             vector_idx = i * qedf->dev_info.common.num_hwfns +
                 qed_ops->common->get_affin_hwfn_idx(qedf->cdev);
             QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
                   "Freeing IRQ #%d vector_idx=%d.\n",
                   i, vector_idx);
             vector = qedf->int_info.msix[vector_idx].vector;
             synchronize_irq(vector);
             irq_set_affinity_hint(vector, NULL);
             irq_set_affinity_notifier(vector, NULL);
             free_irq(vector, &qedf->fp_array[i]);
         }
     } else
         qed_ops->common->simd_handler_clean(qedf->cdev,
             QEDF_SIMD_HANDLER_NUM);
 
     qedf->int_info.used_cnt = 0;
     qed_ops->common->set_fp_int(qedf->cdev, 0);
 }
 
 static int qedf_request_msix_irq(struct qedf_ctx *qedf)
 {
     int i, rc, cpu;
     u16 vector_idx = 0;
     u32 vector;
 
     cpu = cpumask_first(cpu_online_mask);
     for (i = 0; i < qedf->num_queues; i++) {
         vector_idx = i * qedf->dev_info.common.num_hwfns +
             qed_ops->common->get_affin_hwfn_idx(qedf->cdev);
         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
               "Requesting IRQ #%d vector_idx=%d.\n",
               i, vector_idx);
         vector = qedf->int_info.msix[vector_idx].vector;
         rc = request_irq(vector, qedf_msix_handler, 0, "qedf",
                  &qedf->fp_array[i]);
 
         if (rc) {
             QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n");
             qedf_sync_free_irqs(qedf);
             return rc;
         }
 
         qedf->int_info.used_cnt++;
         rc = irq_set_affinity_hint(vector, get_cpu_mask(cpu));
         cpu = cpumask_next(cpu, cpu_online_mask);
     }
 
     return 0;
 }
 
 static int qedf_setup_int(struct qedf_ctx *qedf)
 {
     int rc = 0;
 
     /*
      * Learn interrupt configuration
      */
     rc = qed_ops->common->set_fp_int(qedf->cdev, num_online_cpus());
     if (rc <= 0)
         return 0;
 
     rc  = qed_ops->common->get_fp_int(qedf->cdev, &qedf->int_info);
     if (rc)
         return 0;
 
     QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of msix_cnt = "
            "0x%x num of cpus = 0x%x\n", qedf->int_info.msix_cnt,
            num_online_cpus());
 
     if (qedf->int_info.msix_cnt)
         return qedf_request_msix_irq(qedf);
 
     qed_ops->common->simd_handler_config(qedf->cdev, &qedf,
         QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler);
     qedf->int_info.used_cnt = 1;
 
     QEDF_ERR(&qedf->dbg_ctx,
          "Cannot load driver due to a lack of MSI-X vectors.\n");
     return -EINVAL;
 }
 
 /* Main function for libfc frame reception */
 static void qedf_recv_frame(struct qedf_ctx *qedf,
     struct sk_buff *skb)
 {
     u32 fr_len;
     struct fc_lport *lport;
     struct fc_frame_header *fh;
     struct fcoe_crc_eof crc_eof;
     struct fc_frame *fp;
     u8 *mac = NULL;
     u8 *dest_mac = NULL;
     struct fcoe_hdr *hp;
     struct qedf_rport *fcport;
     struct fc_lport *vn_port;
     u32 f_ctl;
 
     lport = qedf->lport;
     if (lport == NULL || lport->state == LPORT_ST_DISABLED) {
         QEDF_WARN(NULL, "Invalid lport struct or lport disabled.\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->data;
     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);
 
     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))) {
         QEDF_INFO(NULL, QEDF_LOG_LL2, "skb_copy_bits failed.\n");
         kfree_skb(skb);
         return;
     }
     fr_eof(fp) = crc_eof.fcoe_eof;
     fr_crc(fp) = crc_eof.fcoe_crc32;
     if (pskb_trim(skb, fr_len)) {
         QEDF_INFO(NULL, QEDF_LOG_LL2, "pskb_trim failed.\n");
         kfree_skb(skb);
         return;
     }
 
     fh = fc_frame_header_get(fp);
 
     /*
      * Invalid frame filters.
      */
 
     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 (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) {
         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
             "FC frame d_id mismatch with MAC %pM.\n", dest_mac);
         kfree_skb(skb);
         return;
     }
 
     if (qedf->ctlr.state) {
         if (!ether_addr_equal(mac, qedf->ctlr.dest_addr)) {
             QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
                 "Wrong source address: mac:%pM dest_addr:%pM.\n",
                 mac, qedf->ctlr.dest_addr);
             kfree_skb(skb);
             return;
         }
     }
 
     vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
 
     /*
      * 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) {
         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,
               "Dropping frame due to destination mismatch: lport->port_id=0x%x fh->d_id=0x%x.\n",
               lport->port_id, ntoh24(fh->fh_d_id));
         kfree_skb(skb);
         return;
     }
 
     f_ctl = ntoh24(fh->fh_f_ctl);
     if ((fh->fh_type == FC_TYPE_BLS) && (f_ctl & FC_FC_SEQ_CTX) &&
         (f_ctl & FC_FC_EX_CTX)) {
         /* Drop incoming ABTS response that has both SEQ/EX CTX set */
         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,
               "Dropping ABTS response as both SEQ/EX CTX set.\n");
         kfree_skb(skb);
         return;
     }
 
     /*
      * If a connection is uploading, drop incoming FCoE frames as there
      * is a small window where we could try to return a frame while libfc
      * is trying to clean things up.
      */
 
     /* Get fcport associated with d_id if it exists */
     fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
 
     if (fcport && test_bit(QEDF_RPORT_UPLOADING_CONNECTION,
         &fcport->flags)) {
         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
             "Connection uploading, dropping fp=%p.\n", fp);
         kfree_skb(skb);
         return;
     }
 
     QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame receive: "
         "skb=%p fp=%p src=%06x dest=%06x r_ctl=%x fh_type=%x.\n", skb, fp,
         ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl,
         fh->fh_type);
     if (qedf_dump_frames)
         print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
             1, skb->data, skb->len, false);
     fc_exch_recv(lport, fp);
 }
 
 static void qedf_ll2_process_skb(struct work_struct *work)
 {
     struct qedf_skb_work *skb_work =
         container_of(work, struct qedf_skb_work, work);
     struct qedf_ctx *qedf = skb_work->qedf;
     struct sk_buff *skb = skb_work->skb;
     struct ethhdr *eh;
 
     if (!qedf) {
         QEDF_ERR(NULL, "qedf is NULL\n");
         goto err_out;
     }
 
     eh = (struct ethhdr *)skb->data;
 
     /* Undo VLAN encapsulation */
     if (eh->h_proto == htons(ETH_P_8021Q)) {
         memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2);
         eh = skb_pull(skb, VLAN_HLEN);
         skb_reset_mac_header(skb);
     }
 
     /*
      * Process either a FIP frame or FCoE frame based on the
      * protocol value.  If it's not either just drop the
      * frame.
      */
     if (eh->h_proto == htons(ETH_P_FIP)) {
         qedf_fip_recv(qedf, skb);
         goto out;
     } else if (eh->h_proto == htons(ETH_P_FCOE)) {
         __skb_pull(skb, ETH_HLEN);
         qedf_recv_frame(qedf, skb);
         goto out;
     } else
         goto err_out;
 
 err_out:
     kfree_skb(skb);
 out:
     kfree(skb_work);
     return;
 }
 
 static int qedf_ll2_rx(void *cookie, struct sk_buff *skb,
     u32 arg1, u32 arg2)
 {
     struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
     struct qedf_skb_work *skb_work;
 
     if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,
               "Dropping frame as link state is down.\n");
         kfree_skb(skb);
         return 0;
     }
 
     skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC);
     if (!skb_work) {
         QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so "
                "dropping frame.\n");
         kfree_skb(skb);
         return 0;
     }
 
     INIT_WORK(&skb_work->work, qedf_ll2_process_skb);
     skb_work->skb = skb;
     skb_work->qedf = qedf;
     queue_work(qedf->ll2_recv_wq, &skb_work->work);
 
     return 0;
 }
 
 static struct qed_ll2_cb_ops qedf_ll2_cb_ops = {
     .rx_cb = qedf_ll2_rx,
     .tx_cb = NULL,
 };
 
 /* Main thread to process I/O completions */
 void qedf_fp_io_handler(struct work_struct *work)
 {
     struct qedf_io_work *io_work =
         container_of(work, struct qedf_io_work, work);
     u32 comp_type;
 
     /*
      * Deferred part of unsolicited CQE sends
      * frame to libfc.
      */
     comp_type = (io_work->cqe.cqe_data >>
         FCOE_CQE_CQE_TYPE_SHIFT) &
         FCOE_CQE_CQE_TYPE_MASK;
     if (comp_type == FCOE_UNSOLIC_CQE_TYPE &&
         io_work->fp)
         fc_exch_recv(io_work->qedf->lport, io_work->fp);
     else
         qedf_process_cqe(io_work->qedf, &io_work->cqe);
 
     kfree(io_work);
 }
 
 static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf,
     struct qed_sb_info *sb_info, u16 sb_id)
 {
     struct status_block *sb_virt;
     dma_addr_t sb_phys;
     int ret;
 
     sb_virt = dma_alloc_coherent(&qedf->pdev->dev,
         sizeof(struct status_block), &sb_phys, GFP_KERNEL);
 
     if (!sb_virt) {
         QEDF_ERR(&qedf->dbg_ctx,
              "Status block allocation failed for id = %d.\n",
              sb_id);
         return -ENOMEM;
     }
 
     ret = qed_ops->common->sb_init(qedf->cdev, sb_info, sb_virt, sb_phys,
         sb_id, QED_SB_TYPE_STORAGE);
 
     if (ret) {
         QEDF_ERR(&qedf->dbg_ctx,
              "Status block initialization failed (0x%x) for id = %d.\n",
              ret, sb_id);
         return ret;
     }
 
     return 0;
 }
 
 static void qedf_free_sb(struct qedf_ctx *qedf, struct qed_sb_info *sb_info)
 {
     if (sb_info->sb_virt)
         dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_info->sb_virt),
             (void *)sb_info->sb_virt, sb_info->sb_phys);
 }
 
 static void qedf_destroy_sb(struct qedf_ctx *qedf)
 {
     int id;
     struct qedf_fastpath *fp = NULL;
 
     for (id = 0; id < qedf->num_queues; id++) {
         fp = &(qedf->fp_array[id]);
         if (fp->sb_id == QEDF_SB_ID_NULL)
             break;
         qedf_free_sb(qedf, fp->sb_info);
         kfree(fp->sb_info);
     }
     kfree(qedf->fp_array);
 }
 
 static int qedf_prepare_sb(struct qedf_ctx *qedf)
 {
     int id;
     struct qedf_fastpath *fp;
     int ret;
 
     qedf->fp_array =
         kcalloc(qedf->num_queues, sizeof(struct qedf_fastpath),
         GFP_KERNEL);
 
     if (!qedf->fp_array) {
         QEDF_ERR(&(qedf->dbg_ctx), "fastpath array allocation "
               "failed.\n");
         return -ENOMEM;
     }
 
     for (id = 0; id < qedf->num_queues; id++) {
         fp = &(qedf->fp_array[id]);
         fp->sb_id = QEDF_SB_ID_NULL;
         fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL);
         if (!fp->sb_info) {
             QEDF_ERR(&(qedf->dbg_ctx), "SB info struct "
                   "allocation failed.\n");
             goto err;
         }
         ret = qedf_alloc_and_init_sb(qedf, fp->sb_info, id);
         if (ret) {
             QEDF_ERR(&(qedf->dbg_ctx), "SB allocation and "
                   "initialization failed.\n");
             goto err;
         }
         fp->sb_id = id;
         fp->qedf = qedf;
         fp->cq_num_entries =
             qedf->global_queues[id]->cq_mem_size /
             sizeof(struct fcoe_cqe);
     }
 err:
     return 0;
 }
 
 void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe)
 {
     u16 xid;
     struct qedf_ioreq *io_req;
     struct qedf_rport *fcport;
     u32 comp_type;
 
     comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
         FCOE_CQE_CQE_TYPE_MASK;
 
     xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
     io_req = &qedf->cmd_mgr->cmds[xid];
 
     /* Completion not for a valid I/O anymore so just return */
     if (!io_req) {
         QEDF_ERR(&qedf->dbg_ctx,
              "io_req is NULL for xid=0x%x.\n", xid);
         return;
     }
 
     fcport = io_req->fcport;
 
     if (fcport == NULL) {
         QEDF_ERR(&qedf->dbg_ctx,
              "fcport is NULL for xid=0x%x io_req=%p.\n",
              xid, io_req);
         return;
     }
 
     /*
      * Check that fcport is offloaded.  If it isn't then the spinlock
      * isn't valid and shouldn't be taken. We should just return.
      */
     if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
         QEDF_ERR(&qedf->dbg_ctx,
              "Session not offloaded yet, fcport = %p.\n", fcport);
         return;
     }
 
 
     switch (comp_type) {
     case FCOE_GOOD_COMPLETION_CQE_TYPE:
         atomic_inc(&fcport->free_sqes);
         switch (io_req->cmd_type) {
         case QEDF_SCSI_CMD:
             qedf_scsi_completion(qedf, cqe, io_req);
             break;
         case QEDF_ELS:
             qedf_process_els_compl(qedf, cqe, io_req);
             break;
         case QEDF_TASK_MGMT_CMD:
             qedf_process_tmf_compl(qedf, cqe, io_req);
             break;
         case QEDF_SEQ_CLEANUP:
             qedf_process_seq_cleanup_compl(qedf, cqe, io_req);
             break;
         }
         break;
     case FCOE_ERROR_DETECTION_CQE_TYPE:
         atomic_inc(&fcport->free_sqes);
         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
             "Error detect CQE.\n");
         qedf_process_error_detect(qedf, cqe, io_req);
         break;
     case FCOE_EXCH_CLEANUP_CQE_TYPE:
         atomic_inc(&fcport->free_sqes);
         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
             "Cleanup CQE.\n");
         qedf_process_cleanup_compl(qedf, cqe, io_req);
         break;
     case FCOE_ABTS_CQE_TYPE:
         atomic_inc(&fcport->free_sqes);
         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
             "Abort CQE.\n");
         qedf_process_abts_compl(qedf, cqe, io_req);
         break;
     case FCOE_DUMMY_CQE_TYPE:
         atomic_inc(&fcport->free_sqes);
         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
             "Dummy CQE.\n");
         break;
     case FCOE_LOCAL_COMP_CQE_TYPE:
         atomic_inc(&fcport->free_sqes);
         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
             "Local completion CQE.\n");
         break;
     case FCOE_WARNING_CQE_TYPE:
         atomic_inc(&fcport->free_sqes);
         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
             "Warning CQE.\n");
         qedf_process_warning_compl(qedf, cqe, io_req);
         break;
     case MAX_FCOE_CQE_TYPE:
         atomic_inc(&fcport->free_sqes);
         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
             "Max FCoE CQE.\n");
         break;
     default:
         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
             "Default CQE.\n");
         break;
     }
 }
 
 static void qedf_free_bdq(struct qedf_ctx *qedf)
 {
     int i;
 
     if (qedf->bdq_pbl_list)
         dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE,
             qedf->bdq_pbl_list, qedf->bdq_pbl_list_dma);
 
     if (qedf->bdq_pbl)
         dma_free_coherent(&qedf->pdev->dev, qedf->bdq_pbl_mem_size,
             qedf->bdq_pbl, qedf->bdq_pbl_dma);
 
     for (i = 0; i < QEDF_BDQ_SIZE; i++) {
         if (qedf->bdq[i].buf_addr) {
             dma_free_coherent(&qedf->pdev->dev, QEDF_BDQ_BUF_SIZE,
                 qedf->bdq[i].buf_addr, qedf->bdq[i].buf_dma);
         }
     }
 }
 
 static void qedf_free_global_queues(struct qedf_ctx *qedf)
 {
     int i;
     struct global_queue **gl = qedf->global_queues;
 
     for (i = 0; i < qedf->num_queues; i++) {
         if (!gl[i])
             continue;
 
         if (gl[i]->cq)
             dma_free_coherent(&qedf->pdev->dev,
                 gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma);
         if (gl[i]->cq_pbl)
             dma_free_coherent(&qedf->pdev->dev, gl[i]->cq_pbl_size,
                 gl[i]->cq_pbl, gl[i]->cq_pbl_dma);
 
         kfree(gl[i]);
     }
 
     qedf_free_bdq(qedf);
 }
 
 static int qedf_alloc_bdq(struct qedf_ctx *qedf)
 {
     int i;
     struct scsi_bd *pbl;
     u64 *list;
     dma_addr_t page;
 
     /* Alloc dma memory for BDQ buffers */
     for (i = 0; i < QEDF_BDQ_SIZE; i++) {
         qedf->bdq[i].buf_addr = dma_alloc_coherent(&qedf->pdev->dev,
             QEDF_BDQ_BUF_SIZE, &qedf->bdq[i].buf_dma, GFP_KERNEL);
         if (!qedf->bdq[i].buf_addr) {
             QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ "
                 "buffer %d.\n", i);
             return -ENOMEM;
         }
     }
 
     /* Alloc dma memory for BDQ page buffer list */
     qedf->bdq_pbl_mem_size =
         QEDF_BDQ_SIZE * sizeof(struct scsi_bd);
     qedf->bdq_pbl_mem_size =
         ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE);
 
     qedf->bdq_pbl = dma_alloc_coherent(&qedf->pdev->dev,
         qedf->bdq_pbl_mem_size, &qedf->bdq_pbl_dma, GFP_KERNEL);
     if (!qedf->bdq_pbl) {
         QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n");
         return -ENOMEM;
     }
 
     QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
           "BDQ PBL addr=0x%p dma=%pad\n",
           qedf->bdq_pbl, &qedf->bdq_pbl_dma);
 
     /*
      * Populate BDQ PBL with physical and virtual address of individual
      * BDQ buffers
      */
     pbl = (struct scsi_bd *)qedf->bdq_pbl;
     for (i = 0; i < QEDF_BDQ_SIZE; i++) {
         pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma));
         pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma));
         pbl->opaque.fcoe_opaque.hi = 0;
         /* Opaque lo data is an index into the BDQ array */
         pbl->opaque.fcoe_opaque.lo = cpu_to_le32(i);
         pbl++;
     }
 
     /* Allocate list of PBL pages */
     qedf->bdq_pbl_list = dma_alloc_coherent(&qedf->pdev->dev,
                         QEDF_PAGE_SIZE,
                         &qedf->bdq_pbl_list_dma,
                         GFP_KERNEL);
     if (!qedf->bdq_pbl_list) {
         QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL pages.\n");
         return -ENOMEM;
     }
 
     /*
      * Now populate PBL list with pages that contain pointers to the
      * individual buffers.
      */
     qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size /
         QEDF_PAGE_SIZE;
     list = (u64 *)qedf->bdq_pbl_list;
     page = qedf->bdq_pbl_list_dma;
     for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) {
         *list = qedf->bdq_pbl_dma;
         list++;
         page += QEDF_PAGE_SIZE;
     }
 
     return 0;
 }
 
 static int qedf_alloc_global_queues(struct qedf_ctx *qedf)
 {
     u32 *list;
     int i;
     int status;
     u32 *pbl;
     dma_addr_t page;
     int num_pages;
 
     /* Allocate and map CQs, RQs */
     /*
      * Number of global queues (CQ / RQ). This should
      * be <= number of available MSIX vectors for the PF
      */
     if (!qedf->num_queues) {
         QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n");
         return -ENOMEM;
     }
 
     /*
      * Make sure we allocated the PBL that will contain the physical
      * addresses of our queues
      */
     if (!qedf->p_cpuq) {
         status = -EINVAL;
         QEDF_ERR(&qedf->dbg_ctx, "p_cpuq is NULL.\n");
         goto mem_alloc_failure;
     }
 
     qedf->global_queues = kzalloc((sizeof(struct global_queue *)
         * qedf->num_queues), GFP_KERNEL);
     if (!qedf->global_queues) {
         QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global "
               "queues array ptr memory\n");
         return -ENOMEM;
     }
     QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
            "qedf->global_queues=%p.\n", qedf->global_queues);
 
     /* Allocate DMA coherent buffers for BDQ */
     status = qedf_alloc_bdq(qedf);
     if (status) {
         QEDF_ERR(&qedf->dbg_ctx, "Unable to allocate bdq.\n");
         goto mem_alloc_failure;
     }
 
     /* Allocate a CQ and an associated PBL for each MSI-X vector */
     for (i = 0; i < qedf->num_queues; i++) {
         qedf->global_queues[i] = kzalloc(sizeof(struct global_queue),
             GFP_KERNEL);
         if (!qedf->global_queues[i]) {
             QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocate "
                    "global queue %d.\n", i);
             status = -ENOMEM;
             goto mem_alloc_failure;
         }
 
         qedf->global_queues[i]->cq_mem_size =
             FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
         qedf->global_queues[i]->cq_mem_size =
             ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE);
 
         qedf->global_queues[i]->cq_pbl_size =
             (qedf->global_queues[i]->cq_mem_size /
             PAGE_SIZE) * sizeof(void *);
         qedf->global_queues[i]->cq_pbl_size =
             ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE);
 
         qedf->global_queues[i]->cq =
             dma_alloc_coherent(&qedf->pdev->dev,
                        qedf->global_queues[i]->cq_mem_size,
                        &qedf->global_queues[i]->cq_dma,
                        GFP_KERNEL);
 
         if (!qedf->global_queues[i]->cq) {
             QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq.\n");
             status = -ENOMEM;
             goto mem_alloc_failure;
         }
 
         qedf->global_queues[i]->cq_pbl =
             dma_alloc_coherent(&qedf->pdev->dev,
                        qedf->global_queues[i]->cq_pbl_size,
                        &qedf->global_queues[i]->cq_pbl_dma,
                        GFP_KERNEL);
 
         if (!qedf->global_queues[i]->cq_pbl) {
             QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq PBL.\n");
             status = -ENOMEM;
             goto mem_alloc_failure;
         }
 
         /* Create PBL */
         num_pages = qedf->global_queues[i]->cq_mem_size /
             QEDF_PAGE_SIZE;
         page = qedf->global_queues[i]->cq_dma;
         pbl = (u32 *)qedf->global_queues[i]->cq_pbl;
 
         while (num_pages--) {
             *pbl = U64_LO(page);
             pbl++;
             *pbl = U64_HI(page);
             pbl++;
             page += QEDF_PAGE_SIZE;
         }
         /* Set the initial consumer index for cq */
         qedf->global_queues[i]->cq_cons_idx = 0;
     }
 
     list = (u32 *)qedf->p_cpuq;
 
     /*
      * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer,
      * CQ#1 PBL pointer, RQ#1 PBL pointer, etc.  Each PBL pointer points
      * to the physical address which contains an array of pointers to
      * the physical addresses of the specific queue pages.
      */
     for (i = 0; i < qedf->num_queues; i++) {
         *list = U64_LO(qedf->global_queues[i]->cq_pbl_dma);
         list++;
         *list = U64_HI(qedf->global_queues[i]->cq_pbl_dma);
         list++;
         *list = U64_LO(0);
         list++;
         *list = U64_HI(0);
         list++;
     }
 
     return 0;
 
 mem_alloc_failure:
     qedf_free_global_queues(qedf);
     return status;
 }
 
 static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf)
 {
     u8 sq_num_pbl_pages;
     u32 sq_mem_size;
     u32 cq_mem_size;
     u32 cq_num_entries;
     int rval;
 
     /*
      * The number of completion queues/fastpath interrupts/status blocks
      * we allocation is the minimum off:
      *
      * Number of CPUs
      * Number allocated by qed for our PCI function
      */
     qedf->num_queues = MIN_NUM_CPUS_MSIX(qedf);
 
     QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n",
            qedf->num_queues);
 
     qedf->p_cpuq = dma_alloc_coherent(&qedf->pdev->dev,
         qedf->num_queues * sizeof(struct qedf_glbl_q_params),
         &qedf->hw_p_cpuq, GFP_KERNEL);
 
     if (!qedf->p_cpuq) {
         QEDF_ERR(&(qedf->dbg_ctx), "dma_alloc_coherent failed.\n");
         return 1;
     }
 
     rval = qedf_alloc_global_queues(qedf);
     if (rval) {
         QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation "
               "failed.\n");
         return 1;
     }
 
     /* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */
     sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
     sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE);
     sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE);
 
     /* Calculate CQ num entries */
     cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
     cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE);
     cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe);
 
     memset(&(qedf->pf_params), 0, sizeof(qedf->pf_params));
 
     /* Setup the value for fcoe PF */
     qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS;
     qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS;
     qedf->pf_params.fcoe_pf_params.glbl_q_params_addr =
         (u64)qedf->hw_p_cpuq;
     qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages;
 
     qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0;
 
     qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries;
     qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues;
 
     /* log_page_size: 12 for 4KB pages */
     qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE);
 
     qedf->pf_params.fcoe_pf_params.mtu = 9000;
     qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI;
     qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI;
 
     /* BDQ address and size */
     qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] =
         qedf->bdq_pbl_list_dma;
     qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] =
         qedf->bdq_pbl_list_num_entries;
     qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE;
 
     QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
         "bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n",
         qedf->bdq_pbl_list,
         qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0],
         qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]);
 
     QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
         "cq_num_entries=%d.\n",
         qedf->pf_params.fcoe_pf_params.cq_num_entries);
 
     return 0;
 }
 
 /* Free DMA coherent memory for array of queue pointers we pass to qed */
 static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf)
 {
     size_t size = 0;
 
     if (qedf->p_cpuq) {
         size = qedf->num_queues * sizeof(struct qedf_glbl_q_params);
         dma_free_coherent(&qedf->pdev->dev, size, qedf->p_cpuq,
             qedf->hw_p_cpuq);
     }
 
     qedf_free_global_queues(qedf);
 
     kfree(qedf->global_queues);
 }
 
 /*
  * PCI driver functions
  */
 
 static const struct pci_device_id qedf_pci_tbl[] = {
     { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) },
     { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) },
     {0}
 };
 MODULE_DEVICE_TABLE(pci, qedf_pci_tbl);
 
 static struct pci_driver qedf_pci_driver = {
     .name = QEDF_MODULE_NAME,
     .id_table = qedf_pci_tbl,
     .probe = qedf_probe,
     .remove = qedf_remove,
     .shutdown = qedf_shutdown,
 };
 
 static int __qedf_probe(struct pci_dev *pdev, int mode)
 {
     int rc = -EINVAL;
     struct fc_lport *lport;
     struct qedf_ctx *qedf = NULL;
     struct Scsi_Host *host;
     bool is_vf = false;
     struct qed_ll2_params params;
     char host_buf[20];
     struct qed_link_params link_params;
     int status;
     void *task_start, *task_end;
     struct qed_slowpath_params slowpath_params;
     struct qed_probe_params qed_params;
     u16 retry_cnt = 10;
 
     /*
      * When doing error recovery we didn't reap the lport so don't try
      * to reallocate it.
      */
 retry_probe:
     if (mode == QEDF_MODE_RECOVERY)
         msleep(2000);
 
     if (mode != QEDF_MODE_RECOVERY) {
         lport = libfc_host_alloc(&qedf_host_template,
             sizeof(struct qedf_ctx));
 
         if (!lport) {
             QEDF_ERR(NULL, "Could not allocate lport.\n");
             rc = -ENOMEM;
             goto err0;
         }
 
         fc_disc_init(lport);
 
         /* Initialize qedf_ctx */
         qedf = lport_priv(lport);
         set_bit(QEDF_PROBING, &qedf->flags);
         qedf->lport = lport;
         qedf->ctlr.lp = lport;
         qedf->pdev = pdev;
         qedf->dbg_ctx.pdev = pdev;
         qedf->dbg_ctx.host_no = lport->host->host_no;
         spin_lock_init(&qedf->hba_lock);
         INIT_LIST_HEAD(&qedf->fcports);
         qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1;
         atomic_set(&qedf->num_offloads, 0);
         qedf->stop_io_on_error = false;
         pci_set_drvdata(pdev, qedf);
         init_completion(&qedf->fipvlan_compl);
         mutex_init(&qedf->stats_mutex);
         mutex_init(&qedf->flush_mutex);
         qedf->flogi_pending = 0;
 
         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO,
            "QLogic FastLinQ FCoE Module qedf %s, "
            "FW %d.%d.%d.%d\n", QEDF_VERSION,
            FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION,
            FW_ENGINEERING_VERSION);
     } else {
         /* Init pointers during recovery */
         qedf = pci_get_drvdata(pdev);
         set_bit(QEDF_PROBING, &qedf->flags);
         lport = qedf->lport;
     }
 
     QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe started.\n");
 
     host = lport->host;
 
     /* Allocate mempool for qedf_io_work structs */
     qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN,
         qedf_io_work_cache);
     if (qedf->io_mempool == NULL) {
         QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n");
         goto err1;
     }
     QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n",
         qedf->io_mempool);
 
     sprintf(host_buf, "qedf_%u_link",
         qedf->lport->host->host_no);
     qedf->link_update_wq = create_workqueue(host_buf);
     INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update);
     INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery);
     INIT_DELAYED_WORK(&qedf->grcdump_work, qedf_wq_grcdump);
     INIT_DELAYED_WORK(&qedf->stag_work, qedf_stag_change_work);
     qedf->fipvlan_retries = qedf_fipvlan_retries;
     /* Set a default prio in case DCBX doesn't converge */
     if (qedf_default_prio > -1) {
         /*
          * This is the case where we pass a modparam in so we want to
          * honor it even if dcbx doesn't converge.
          */
         qedf->prio = qedf_default_prio;
     } else
         qedf->prio = QEDF_DEFAULT_PRIO;
 
     /*
      * Common probe. Takes care of basic hardware init and pci_*
      * functions.
      */
     memset(&qed_params, 0, sizeof(qed_params));
     qed_params.protocol = QED_PROTOCOL_FCOE;
     qed_params.dp_module = qedf_dp_module;
     qed_params.dp_level = qedf_dp_level;
     qed_params.is_vf = is_vf;
     qedf->cdev = qed_ops->common->probe(pdev, &qed_params);
     if (!qedf->cdev) {
         if ((mode == QEDF_MODE_RECOVERY) && retry_cnt) {
             QEDF_ERR(&qedf->dbg_ctx,
                 "Retry %d initialize hardware\n", retry_cnt);
             retry_cnt--;
             goto retry_probe;
         }
         QEDF_ERR(&qedf->dbg_ctx, "common probe failed.\n");
         rc = -ENODEV;
         goto err1;
     }
 
     /* Learn information crucial for qedf to progress */
     rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info);
     if (rc) {
         QEDF_ERR(&(qedf->dbg_ctx), "Failed to dev info.\n");
         goto err1;
     }
 
     QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
           "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n",
           qedf->dev_info.common.num_hwfns,
           qed_ops->common->get_affin_hwfn_idx(qedf->cdev));
 
     /* queue allocation code should come here
      * order should be
      *  slowpath_start
      *  status block allocation
      *  interrupt registration (to get min number of queues)
      *  set_fcoe_pf_param
      *  qed_sp_fcoe_func_start
      */
     rc = qedf_set_fcoe_pf_param(qedf);
     if (rc) {
         QEDF_ERR(&(qedf->dbg_ctx), "Cannot set fcoe pf param.\n");
         goto err2;
     }
     qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
 
     /* Learn information crucial for qedf to progress */
     rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info);
     if (rc) {
         QEDF_ERR(&qedf->dbg_ctx, "Failed to fill dev info.\n");
         goto err2;
     }
 
     if (mode != QEDF_MODE_RECOVERY) {
         qedf->devlink = qed_ops->common->devlink_register(qedf->cdev);
         if (IS_ERR(qedf->devlink)) {
             QEDF_ERR(&qedf->dbg_ctx, "Cannot register devlink\n");
             rc = PTR_ERR(qedf->devlink);
             qedf->devlink = NULL;
             goto err2;
         }
     }
 
     /* Record BDQ producer doorbell addresses */
     qedf->bdq_primary_prod = qedf->dev_info.primary_dbq_rq_addr;
     qedf->bdq_secondary_prod = qedf->dev_info.secondary_bdq_rq_addr;
     QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
         "BDQ primary_prod=%p secondary_prod=%p.\n", qedf->bdq_primary_prod,
         qedf->bdq_secondary_prod);
 
     qed_ops->register_ops(qedf->cdev, &qedf_cb_ops, qedf);
 
     rc = qedf_prepare_sb(qedf);
     if (rc) {
 
         QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
         goto err2;
     }
 
     /* Start the Slowpath-process */
     slowpath_params.int_mode = QED_INT_MODE_MSIX;
     slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER;
     slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER;
     slowpath_params.drv_rev = QEDF_DRIVER_REV_VER;
     slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER;
     strncpy(slowpath_params.name, "qedf", QED_DRV_VER_STR_SIZE);
     rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params);
     if (rc) {
         QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
         goto err2;
     }
 
     /*
      * update_pf_params needs to be called before and after slowpath
      * start
      */
     qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
 
     /* Setup interrupts */
     rc = qedf_setup_int(qedf);
     if (rc) {
         QEDF_ERR(&qedf->dbg_ctx, "Setup interrupts failed.\n");
         goto err3;
     }
 
     rc = qed_ops->start(qedf->cdev, &qedf->tasks);
     if (rc) {
         QEDF_ERR(&(qedf->dbg_ctx), "Cannot start FCoE function.\n");
         goto err4;
     }
     task_start = qedf_get_task_mem(&qedf->tasks, 0);
     task_end = qedf_get_task_mem(&qedf->tasks, MAX_TID_BLOCKS_FCOE - 1);
     QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Task context start=%p, "
            "end=%p block_size=%u.\n", task_start, task_end,
            qedf->tasks.size);
 
     /*
      * We need to write the number of BDs in the BDQ we've preallocated so
      * the f/w will do a prefetch and we'll get an unsolicited CQE when a
      * packet arrives.
      */
     qedf->bdq_prod_idx = QEDF_BDQ_SIZE;
     QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
         "Writing %d to primary and secondary BDQ doorbell registers.\n",
         qedf->bdq_prod_idx);
     writew(qedf->bdq_prod_idx, qedf->bdq_primary_prod);
     readw(qedf->bdq_primary_prod);
     writew(qedf->bdq_prod_idx, qedf->bdq_secondary_prod);
     readw(qedf->bdq_secondary_prod);
 
     qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
 
     /* Now that the dev_info struct has been filled in set the MAC
      * address
      */
     ether_addr_copy(qedf->mac, qedf->dev_info.common.hw_mac);
     QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "MAC address is %pM.\n",
            qedf->mac);
 
     /*
      * Set the WWNN and WWPN in the following way:
      *
      * If the info we get from qed is non-zero then use that to set the
      * WWPN and WWNN. Otherwise fall back to use fcoe_wwn_from_mac() based
      * on the MAC address.
      */
     if (qedf->dev_info.wwnn != 0 && qedf->dev_info.wwpn != 0) {
         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
             "Setting WWPN and WWNN from qed dev_info.\n");
         qedf->wwnn = qedf->dev_info.wwnn;
         qedf->wwpn = qedf->dev_info.wwpn;
     } else {
         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
             "Setting WWPN and WWNN using fcoe_wwn_from_mac().\n");
         qedf->wwnn = fcoe_wwn_from_mac(qedf->mac, 1, 0);
         qedf->wwpn = fcoe_wwn_from_mac(qedf->mac, 2, 0);
     }
     QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,  "WWNN=%016llx "
            "WWPN=%016llx.\n", qedf->wwnn, qedf->wwpn);
 
     sprintf(host_buf, "host_%d", host->host_no);
     qed_ops->common->set_name(qedf->cdev, host_buf);
 
     /* Allocate cmd mgr */
     qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf);
     if (!qedf->cmd_mgr) {
         QEDF_ERR(&(qedf->dbg_ctx), "Failed to allocate cmd mgr.\n");
         rc = -ENOMEM;
         goto err5;
     }
 
     if (mode != QEDF_MODE_RECOVERY) {
         host->transportt = qedf_fc_transport_template;
         host->max_lun = qedf_max_lun;
         host->max_cmd_len = QEDF_MAX_CDB_LEN;
         host->max_id = QEDF_MAX_SESSIONS;
         host->can_queue = FCOE_PARAMS_NUM_TASKS;
         rc = scsi_add_host(host, &pdev->dev);
         if (rc) {
             QEDF_WARN(&qedf->dbg_ctx,
                   "Error adding Scsi_Host rc=0x%x.\n", rc);
             goto err6;
         }
     }
 
     memset(&params, 0, sizeof(params));
     params.mtu = QEDF_LL2_BUF_SIZE;
     ether_addr_copy(params.ll2_mac_address, qedf->mac);
 
     /* Start LL2 processing thread */
     snprintf(host_buf, 20, "qedf_%d_ll2", host->host_no);
     qedf->ll2_recv_wq =
         create_workqueue(host_buf);
     if (!qedf->ll2_recv_wq) {
         QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n");
         rc = -ENOMEM;
         goto err7;
     }
 
 #ifdef CONFIG_DEBUG_FS
     qedf_dbg_host_init(&(qedf->dbg_ctx), qedf_debugfs_ops,
                 qedf_dbg_fops);
 #endif
 
     /* Start LL2 */
     qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf);
     rc = qed_ops->ll2->start(qedf->cdev, &params);
     if (rc) {
         QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n");
         goto err7;
     }
     set_bit(QEDF_LL2_STARTED, &qedf->flags);
 
     /* Set initial FIP/FCoE VLAN to NULL */
     qedf->vlan_id = 0;
 
     /*
      * No need to setup fcoe_ctlr or fc_lport objects during recovery since
      * they were not reaped during the unload process.
      */
     if (mode != QEDF_MODE_RECOVERY) {
         /* Setup imbedded fcoe controller */
         qedf_fcoe_ctlr_setup(qedf);
 
         /* Setup lport */
         rc = qedf_lport_setup(qedf);
         if (rc) {
             QEDF_ERR(&(qedf->dbg_ctx),
                 "qedf_lport_setup failed.\n");
             goto err7;
         }
     }
 
     sprintf(host_buf, "qedf_%u_timer", qedf->lport->host->host_no);
     qedf->timer_work_queue =
         create_workqueue(host_buf);
     if (!qedf->timer_work_queue) {
         QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer "
               "workqueue.\n");
         rc = -ENOMEM;
         goto err7;
     }
 
     /* DPC workqueue is not reaped during recovery unload */
     if (mode != QEDF_MODE_RECOVERY) {
         sprintf(host_buf, "qedf_%u_dpc",
             qedf->lport->host->host_no);
         qedf->dpc_wq = create_workqueue(host_buf);
     }
     INIT_DELAYED_WORK(&qedf->recovery_work, qedf_recovery_handler);
 
     /*
      * GRC dump and sysfs parameters are not reaped during the recovery
      * unload process.
      */
     if (mode != QEDF_MODE_RECOVERY) {
         qedf->grcdump_size =
             qed_ops->common->dbg_all_data_size(qedf->cdev);
         if (qedf->grcdump_size) {
             rc = qedf_alloc_grc_dump_buf(&qedf->grcdump,
                 qedf->grcdump_size);
             if (rc) {
                 QEDF_ERR(&(qedf->dbg_ctx),
                     "GRC Dump buffer alloc failed.\n");
                 qedf->grcdump = NULL;
             }
 
             QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
                 "grcdump: addr=%p, size=%u.\n",
                 qedf->grcdump, qedf->grcdump_size);
         }
         qedf_create_sysfs_ctx_attr(qedf);
 
         /* Initialize I/O tracing for this adapter */
         spin_lock_init(&qedf->io_trace_lock);
         qedf->io_trace_idx = 0;
     }
 
     init_completion(&qedf->flogi_compl);
 
     status = qed_ops->common->update_drv_state(qedf->cdev, true);
     if (status)
         QEDF_ERR(&(qedf->dbg_ctx),
             "Failed to send drv state to MFW.\n");
 
     memset(&link_params, 0, sizeof(struct qed_link_params));
     link_params.link_up = true;
     status = qed_ops->common->set_link(qedf->cdev, &link_params);
     if (status)
         QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n");
 
     /* Start/restart discovery */
     if (mode == QEDF_MODE_RECOVERY)
         fcoe_ctlr_link_up(&qedf->ctlr);
     else
         fc_fabric_login(lport);
 
     QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe done.\n");
 
     clear_bit(QEDF_PROBING, &qedf->flags);
 
     /* All good */
     return 0;
 
 err7:
     if (qedf->ll2_recv_wq)
         destroy_workqueue(qedf->ll2_recv_wq);
     fc_remove_host(qedf->lport->host);
     scsi_remove_host(qedf->lport->host);
 #ifdef CONFIG_DEBUG_FS
     qedf_dbg_host_exit(&(qedf->dbg_ctx));
 #endif
 err6:
     qedf_cmd_mgr_free(qedf->cmd_mgr);
 err5:
     qed_ops->stop(qedf->cdev);
 err4:
     qedf_free_fcoe_pf_param(qedf);
     qedf_sync_free_irqs(qedf);
 err3:
     qed_ops->common->slowpath_stop(qedf->cdev);
 err2:
     qed_ops->common->remove(qedf->cdev);
 err1:
     scsi_host_put(lport->host);
 err0:
     return rc;
 }
 
 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 {
     return __qedf_probe(pdev, QEDF_MODE_NORMAL);
 }
 
 static void __qedf_remove(struct pci_dev *pdev, int mode)
 {
     struct qedf_ctx *qedf;
     int rc;
 
     if (!pdev) {
         QEDF_ERR(NULL, "pdev is NULL.\n");
         return;
     }
 
     qedf = pci_get_drvdata(pdev);
 
     /*
      * Prevent race where we're in board disable work and then try to
      * rmmod the module.
      */
     if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
         QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n");
         return;
     }
 
     if (mode != QEDF_MODE_RECOVERY)
         set_bit(QEDF_UNLOADING, &qedf->flags);
 
     /* Logoff the fabric to upload all connections */
     if (mode == QEDF_MODE_RECOVERY)
         fcoe_ctlr_link_down(&qedf->ctlr);
     else
         fc_fabric_logoff(qedf->lport);
 
     if (!qedf_wait_for_upload(qedf))
         QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n");
 
 #ifdef CONFIG_DEBUG_FS
     qedf_dbg_host_exit(&(qedf->dbg_ctx));
 #endif
 
     /* Stop any link update handling */
     cancel_delayed_work_sync(&qedf->link_update);
     destroy_workqueue(qedf->link_update_wq);
     qedf->link_update_wq = NULL;
 
     if (qedf->timer_work_queue)
         destroy_workqueue(qedf->timer_work_queue);
 
     /* Stop Light L2 */
     clear_bit(QEDF_LL2_STARTED, &qedf->flags);
     qed_ops->ll2->stop(qedf->cdev);
     if (qedf->ll2_recv_wq)
         destroy_workqueue(qedf->ll2_recv_wq);
 
     /* Stop fastpath */
     qedf_sync_free_irqs(qedf);
     qedf_destroy_sb(qedf);
 
     /*
      * During recovery don't destroy OS constructs that represent the
      * physical port.
      */
     if (mode != QEDF_MODE_RECOVERY) {
         qedf_free_grc_dump_buf(&qedf->grcdump);
         qedf_remove_sysfs_ctx_attr(qedf);
 
         /* Remove all SCSI/libfc/libfcoe structures */
         fcoe_ctlr_destroy(&qedf->ctlr);
         fc_lport_destroy(qedf->lport);
         fc_remove_host(qedf->lport->host);
         scsi_remove_host(qedf->lport->host);
     }
 
     qedf_cmd_mgr_free(qedf->cmd_mgr);
 
     if (mode != QEDF_MODE_RECOVERY) {
         fc_exch_mgr_free(qedf->lport);
         fc_lport_free_stats(qedf->lport);
 
         /* Wait for all vports to be reaped */
         qedf_wait_for_vport_destroy(qedf);
     }
 
     /*
      * Now that all connections have been uploaded we can stop the
      * rest of the qed operations
      */
     qed_ops->stop(qedf->cdev);
 
     if (mode != QEDF_MODE_RECOVERY) {
         if (qedf->dpc_wq) {
             /* Stop general DPC handling */
             destroy_workqueue(qedf->dpc_wq);
             qedf->dpc_wq = NULL;
         }
     }
 
     /* Final shutdown for the board */
     qedf_free_fcoe_pf_param(qedf);
     if (mode != QEDF_MODE_RECOVERY) {
         qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
         pci_set_drvdata(pdev, NULL);
     }
 
     rc = qed_ops->common->update_drv_state(qedf->cdev, false);
     if (rc)
         QEDF_ERR(&(qedf->dbg_ctx),
             "Failed to send drv state to MFW.\n");
 
     if (mode != QEDF_MODE_RECOVERY && qedf->devlink) {
         qed_ops->common->devlink_unregister(qedf->devlink);
         qedf->devlink = NULL;
     }
 
     qed_ops->common->slowpath_stop(qedf->cdev);
     qed_ops->common->remove(qedf->cdev);
 
     mempool_destroy(qedf->io_mempool);
 
     /* Only reap the Scsi_host on a real removal */
     if (mode != QEDF_MODE_RECOVERY)
         scsi_host_put(qedf->lport->host);
 }
 
 static void qedf_remove(struct pci_dev *pdev)
 {
     /* Check to make sure this function wasn't already disabled */
     if (!atomic_read(&pdev->enable_cnt))
         return;
 
     __qedf_remove(pdev, QEDF_MODE_NORMAL);
 }
 
 void qedf_wq_grcdump(struct work_struct *work)
 {
     struct qedf_ctx *qedf =
         container_of(work, struct qedf_ctx, grcdump_work.work);
 
     QEDF_ERR(&(qedf->dbg_ctx), "Collecting GRC dump.\n");
     qedf_capture_grc_dump(qedf);
 }
 
 void qedf_schedule_hw_err_handler(void *dev, enum qed_hw_err_type err_type)
 {
     struct qedf_ctx *qedf = dev;
 
     QEDF_ERR(&(qedf->dbg_ctx),
             "Hardware error handler scheduled, event=%d.\n",
             err_type);
 
     if (test_bit(QEDF_IN_RECOVERY, &qedf->flags)) {
         QEDF_ERR(&(qedf->dbg_ctx),
                 "Already in recovery, not scheduling board disable work.\n");
         return;
     }
 
     switch (err_type) {
     case QED_HW_ERR_FAN_FAIL:
         schedule_delayed_work(&qedf->board_disable_work, 0);
         break;
     case QED_HW_ERR_MFW_RESP_FAIL:
     case QED_HW_ERR_HW_ATTN:
     case QED_HW_ERR_DMAE_FAIL:
     case QED_HW_ERR_FW_ASSERT:
         /* Prevent HW attentions from being reasserted */
         qed_ops->common->attn_clr_enable(qedf->cdev, true);
         break;
     case QED_HW_ERR_RAMROD_FAIL:
         /* Prevent HW attentions from being reasserted */
         qed_ops->common->attn_clr_enable(qedf->cdev, true);
 
         if (qedf_enable_recovery && qedf->devlink)
             qed_ops->common->report_fatal_error(qedf->devlink,
                 err_type);
 
         break;
     default:
         break;
     }
 }
 
 /*
  * Protocol TLV handler
  */
 void qedf_get_protocol_tlv_data(void *dev, void *data)
 {
     struct qedf_ctx *qedf = dev;
     struct qed_mfw_tlv_fcoe *fcoe = data;
     struct fc_lport *lport;
     struct Scsi_Host *host;
     struct fc_host_attrs *fc_host;
     struct fc_host_statistics *hst;
 
     if (!qedf) {
         QEDF_ERR(NULL, "qedf is null.\n");
         return;
     }
 
     if (test_bit(QEDF_PROBING, &qedf->flags)) {
         QEDF_ERR(&qedf->dbg_ctx, "Function is still probing.\n");
         return;
     }
 
     lport = qedf->lport;
     host = lport->host;
     fc_host = shost_to_fc_host(host);
 
     /* Force a refresh of the fc_host stats including offload stats */
     hst = qedf_fc_get_host_stats(host);
 
     fcoe->qos_pri_set = true;
     fcoe->qos_pri = 3; /* Hard coded to 3 in driver */
 
     fcoe->ra_tov_set = true;
     fcoe->ra_tov = lport->r_a_tov;
 
     fcoe->ed_tov_set = true;
     fcoe->ed_tov = lport->e_d_tov;
 
     fcoe->npiv_state_set = true;
     fcoe->npiv_state = 1; /* NPIV always enabled */
 
     fcoe->num_npiv_ids_set = true;
     fcoe->num_npiv_ids = fc_host->npiv_vports_inuse;
 
     /* Certain attributes we only want to set if we've selected an FCF */
     if (qedf->ctlr.sel_fcf) {
         fcoe->switch_name_set = true;
         u64_to_wwn(qedf->ctlr.sel_fcf->switch_name, fcoe->switch_name);
     }
 
     fcoe->port_state_set = true;
     /* For qedf we're either link down or fabric attach */
     if (lport->link_up)
         fcoe->port_state = QED_MFW_TLV_PORT_STATE_FABRIC;
     else
         fcoe->port_state = QED_MFW_TLV_PORT_STATE_OFFLINE;
 
     fcoe->link_failures_set = true;
     fcoe->link_failures = (u16)hst->link_failure_count;
 
     fcoe->fcoe_txq_depth_set = true;
     fcoe->fcoe_rxq_depth_set = true;
     fcoe->fcoe_rxq_depth = FCOE_PARAMS_NUM_TASKS;
     fcoe->fcoe_txq_depth = FCOE_PARAMS_NUM_TASKS;
 
     fcoe->fcoe_rx_frames_set = true;
     fcoe->fcoe_rx_frames = hst->rx_frames;
 
     fcoe->fcoe_tx_frames_set = true;
     fcoe->fcoe_tx_frames = hst->tx_frames;
 
     fcoe->fcoe_rx_bytes_set = true;
     fcoe->fcoe_rx_bytes = hst->fcp_input_megabytes * 1000000;
 
     fcoe->fcoe_tx_bytes_set = true;
     fcoe->fcoe_tx_bytes = hst->fcp_output_megabytes * 1000000;
 
     fcoe->crc_count_set = true;
     fcoe->crc_count = hst->invalid_crc_count;
 
     fcoe->tx_abts_set = true;
     fcoe->tx_abts = hst->fcp_packet_aborts;
 
     fcoe->tx_lun_rst_set = true;
     fcoe->tx_lun_rst = qedf->lun_resets;
 
     fcoe->abort_task_sets_set = true;
     fcoe->abort_task_sets = qedf->packet_aborts;
 
     fcoe->scsi_busy_set = true;
     fcoe->scsi_busy = qedf->busy;
 
     fcoe->scsi_tsk_full_set = true;
     fcoe->scsi_tsk_full = qedf->task_set_fulls;
 }
 
 /* Deferred work function to perform soft context reset on STAG change */
 void qedf_stag_change_work(struct work_struct *work)
 {
     struct qedf_ctx *qedf =
         container_of(work, struct qedf_ctx, stag_work.work);
 
     printk_ratelimited("[%s]:[%s:%d]:%d: Performing software context reset.",
             dev_name(&qedf->pdev->dev), __func__, __LINE__,
             qedf->dbg_ctx.host_no);
     qedf_ctx_soft_reset(qedf->lport);
 }
 
 static void qedf_shutdown(struct pci_dev *pdev)
 {
     __qedf_remove(pdev, QEDF_MODE_NORMAL);
 }
 
 /*
  * Recovery handler code
  */
 static void qedf_schedule_recovery_handler(void *dev)
 {
     struct qedf_ctx *qedf = dev;
 
     QEDF_ERR(&qedf->dbg_ctx, "Recovery handler scheduled.\n");
     schedule_delayed_work(&qedf->recovery_work, 0);
 }
 
 static void qedf_recovery_handler(struct work_struct *work)
 {
     struct qedf_ctx *qedf =
         container_of(work, struct qedf_ctx, recovery_work.work);
 
     if (test_and_set_bit(QEDF_IN_RECOVERY, &qedf->flags))
         return;
 
     /*
      * Call common_ops->recovery_prolog to allow the MFW to quiesce
      * any PCI transactions.
      */
     qed_ops->common->recovery_prolog(qedf->cdev);
 
     QEDF_ERR(&qedf->dbg_ctx, "Recovery work start.\n");
     __qedf_remove(qedf->pdev, QEDF_MODE_RECOVERY);
     /*
      * Reset link and dcbx to down state since we will not get a link down
      * event from the MFW but calling __qedf_remove will essentially be a
      * link down event.
      */
     atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
     atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING);
     __qedf_probe(qedf->pdev, QEDF_MODE_RECOVERY);
     clear_bit(QEDF_IN_RECOVERY, &qedf->flags);
     QEDF_ERR(&qedf->dbg_ctx, "Recovery work complete.\n");
 }
 
 /* Generic TLV data callback */
 void qedf_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data)
 {
     struct qedf_ctx *qedf;
 
     if (!dev) {
         QEDF_INFO(NULL, QEDF_LOG_EVT,
               "dev is NULL so ignoring get_generic_tlv_data request.\n");
         return;
     }
     qedf = (struct qedf_ctx *)dev;
 
     memset(data, 0, sizeof(struct qed_generic_tlvs));
     ether_addr_copy(data->mac[0], qedf->mac);
 }
 
 /*
  * Module Init/Remove
  */
 
 static int __init qedf_init(void)
 {
     int ret;
 
     /* If debug=1 passed, set the default log mask */
     if (qedf_debug == QEDF_LOG_DEFAULT)
         qedf_debug = QEDF_DEFAULT_LOG_MASK;
 
     /*
      * Check that default prio for FIP/FCoE traffic is between 0..7 if a
      * value has been set
      */
     if (qedf_default_prio > -1)
         if (qedf_default_prio > 7) {
             qedf_default_prio = QEDF_DEFAULT_PRIO;
             QEDF_ERR(NULL, "FCoE/FIP priority out of range, resetting to %d.\n",
                 QEDF_DEFAULT_PRIO);
         }
 
     /* Print driver banner */
     QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n", QEDF_DESCR,
            QEDF_VERSION);
 
     /* Create kmem_cache for qedf_io_work structs */
     qedf_io_work_cache = kmem_cache_create("qedf_io_work_cache",
         sizeof(struct qedf_io_work), 0, SLAB_HWCACHE_ALIGN, NULL);
     if (qedf_io_work_cache == NULL) {
         QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n");
         goto err1;
     }
     QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n",
         qedf_io_work_cache);
 
     qed_ops = qed_get_fcoe_ops();
     if (!qed_ops) {
         QEDF_ERR(NULL, "Failed to get qed fcoe operations\n");
         goto err1;
     }
 
 #ifdef CONFIG_DEBUG_FS
     qedf_dbg_init("qedf");
 #endif
 
     qedf_fc_transport_template =
         fc_attach_transport(&qedf_fc_transport_fn);
     if (!qedf_fc_transport_template) {
         QEDF_ERR(NULL, "Could not register with FC transport\n");
         goto err2;
     }
 
     qedf_fc_vport_transport_template =
         fc_attach_transport(&qedf_fc_vport_transport_fn);
     if (!qedf_fc_vport_transport_template) {
         QEDF_ERR(NULL, "Could not register vport template with FC "
               "transport\n");
         goto err3;
     }
 
     qedf_io_wq = create_workqueue("qedf_io_wq");
     if (!qedf_io_wq) {
         QEDF_ERR(NULL, "Could not create qedf_io_wq.\n");
         goto err4;
     }
 
     qedf_cb_ops.get_login_failures = qedf_get_login_failures;
 
     ret = pci_register_driver(&qedf_pci_driver);
     if (ret) {
         QEDF_ERR(NULL, "Failed to register driver\n");
         goto err5;
     }
 
     return 0;
 
 err5:
     destroy_workqueue(qedf_io_wq);
 err4:
     fc_release_transport(qedf_fc_vport_transport_template);
 err3:
     fc_release_transport(qedf_fc_transport_template);
 err2:
 #ifdef CONFIG_DEBUG_FS
     qedf_dbg_exit();
 #endif
     qed_put_fcoe_ops();
 err1:
     return -EINVAL;
 }
 
 static void __exit qedf_cleanup(void)
 {
     pci_unregister_driver(&qedf_pci_driver);
 
     destroy_workqueue(qedf_io_wq);
 
     fc_release_transport(qedf_fc_vport_transport_template);
     fc_release_transport(qedf_fc_transport_template);
 #ifdef CONFIG_DEBUG_FS
     qedf_dbg_exit();
 #endif
     qed_put_fcoe_ops();
 
     kmem_cache_destroy(qedf_io_work_cache);
 }
 
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx FCoE Module");
 MODULE_AUTHOR("QLogic Corporation");
 MODULE_VERSION(QEDF_VERSION);
 module_init(qedf_init);
 module_exit(qedf_cleanup);