text: // SPDX-License-Identifier: GPL-2.0
  /* Copyright (c) 2018, Intel Corporation. */
  
  /* Intel(R) Ethernet Connection E800 Series Linux Driver */
  
  #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  
  #include <generated/utsrelease.h>
  #include "ice.h"
  #include "ice_base.h"
  #include "ice_lib.h"
  #include "ice_fltr.h"
  #include "ice_dcb_lib.h"
  #include "ice_dcb_nl.h"
  #include "ice_devlink.h"
  
  #define DRV_SUMMARY	"Intel(R) Ethernet Connection E800 Series Linux Driver"
  static const char ice_driver_string[] = DRV_SUMMARY;
  static const char ice_copyright[] = "Copyright (c) 2018, Intel Corporation.";
  
  /* DDP Package file located in firmware search paths (e.g. /lib/firmware/) */
  #define ICE_DDP_PKG_PATH	"intel/ice/ddp/"
  #define ICE_DDP_PKG_FILE	ICE_DDP_PKG_PATH "ice.pkg"
  
  MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
  MODULE_DESCRIPTION(DRV_SUMMARY);
  MODULE_LICENSE("GPL v2");
  MODULE_FIRMWARE(ICE_DDP_PKG_FILE);
  
  static int debug = -1;
  module_param(debug, int, 0644);
  #ifndef CONFIG_DYNAMIC_DEBUG
  MODULE_PARM_DESC(debug, "netif level (0=none,...,16=all), hw debug_mask (0x8XXXXXXX)");
  #else
  MODULE_PARM_DESC(debug, "netif level (0=none,...,16=all)");
  #endif /* !CONFIG_DYNAMIC_DEBUG */
  
  static struct workqueue_struct *ice_wq;
  static const struct net_device_ops ice_netdev_safe_mode_ops;
  static const struct net_device_ops ice_netdev_ops;
  static int ice_vsi_open(struct ice_vsi *vsi);
  
  static void ice_rebuild(struct ice_pf *pf, enum ice_reset_req reset_type);
  
  static void ice_vsi_release_all(struct ice_pf *pf);
  
  /**
   * ice_get_tx_pending - returns number of Tx descriptors not processed
   * @ring: the ring of descriptors
   */
  static u16 ice_get_tx_pending(struct ice_ring *ring)
  {
  	u16 head, tail;
  
  	head = ring->next_to_clean;
  	tail = ring->next_to_use;
  
  	if (head != tail)
  		return (head < tail) ?
  			tail - head : (tail + ring->count - head);
  	return 0;
  }
  
  /**
   * ice_check_for_hang_subtask - check for and recover hung queues
   * @pf: pointer to PF struct
   */
  static void ice_check_for_hang_subtask(struct ice_pf *pf)
  {
  	struct ice_vsi *vsi = NULL;
  	struct ice_hw *hw;
  	unsigned int i;
  	int packets;
  	u32 v;
  
  	ice_for_each_vsi(pf, v)
  		if (pf->vsi[v] && pf->vsi[v]->type == ICE_VSI_PF) {
  			vsi = pf->vsi[v];
  			break;
  		}
  
  	if (!vsi || test_bit(__ICE_DOWN, vsi->state))
  		return;
  
  	if (!(vsi->netdev && netif_carrier_ok(vsi->netdev)))
  		return;
  
  	hw = &vsi->back->hw;
  
  	for (i = 0; i < vsi->num_txq; i++) {
  		struct ice_ring *tx_ring = vsi->tx_rings[i];
  
  		if (tx_ring && tx_ring->desc) {
  			/* If packet counter has not changed the queue is
  			 * likely stalled, so force an interrupt for this
  			 * queue.
  			 *
  			 * prev_pkt would be negative if there was no
  			 * pending work.
  			 */
  			packets = tx_ring->stats.pkts & INT_MAX;
  			if (tx_ring->tx_stats.prev_pkt == packets) {
  				/* Trigger sw interrupt to revive the queue */
  				ice_trigger_sw_intr(hw, tx_ring->q_vector);
  				continue;
  			}
  
  			/* Memory barrier between read of packet count and call
  			 * to ice_get_tx_pending()
  			 */
  			smp_rmb();
  			tx_ring->tx_stats.prev_pkt =
  			    ice_get_tx_pending(tx_ring) ? packets : -1;
  		}
  	}
  }
  
  /**
   * ice_init_mac_fltr - Set initial MAC filters
   * @pf: board private structure
   *
   * Set initial set of MAC filters for PF VSI; configure filters for permanent
   * address and broadcast address. If an error is encountered, netdevice will be
   * unregistered.
   */
  static int ice_init_mac_fltr(struct ice_pf *pf)
  {
  	enum ice_status status;
  	struct ice_vsi *vsi;
  	u8 *perm_addr;
  
  	vsi = ice_get_main_vsi(pf);
  	if (!vsi)
  		return -EINVAL;
  
  	perm_addr = vsi->port_info->mac.perm_addr;
  	status = ice_fltr_add_mac_and_broadcast(vsi, perm_addr, ICE_FWD_TO_VSI);
  	if (!status)
  		return 0;
  
  	/* We aren't useful with no MAC filters, so unregister if we
  	 * had an error
  	 */
  	if (vsi->netdev->reg_state == NETREG_REGISTERED) {
  		dev_err(ice_pf_to_dev(pf), "Could not add MAC filters error %s. Unregistering device\n",
  			ice_stat_str(status));
  		unregister_netdev(vsi->netdev);
  		free_netdev(vsi->netdev);
  		vsi->netdev = NULL;
  	}
  
  	return -EIO;
  }
  
  /**
   * ice_add_mac_to_sync_list - creates list of MAC addresses to be synced
   * @netdev: the net device on which the sync is happening
   * @addr: MAC address to sync
   *
   * This is a callback function which is called by the in kernel device sync
   * functions (like __dev_uc_sync, __dev_mc_sync, etc). This function only
   * populates the tmp_sync_list, which is later used by ice_add_mac to add the
   * MAC filters from the hardware.
   */
  static int ice_add_mac_to_sync_list(struct net_device *netdev, const u8 *addr)
  {
  	struct ice_netdev_priv *np = netdev_priv(netdev);
  	struct ice_vsi *vsi = np->vsi;
  
  	if (ice_fltr_add_mac_to_list(vsi, &vsi->tmp_sync_list, addr,
  				     ICE_FWD_TO_VSI))
  		return -EINVAL;
  
  	return 0;
  }
  
  /**
   * ice_add_mac_to_unsync_list - creates list of MAC addresses to be unsynced
   * @netdev: the net device on which the unsync is happening
   * @addr: MAC address to unsync
   *
   * This is a callback function which is called by the in kernel device unsync
   * functions (like __dev_uc_unsync, __dev_mc_unsync, etc). This function only
   * populates the tmp_unsync_list, which is later used by ice_remove_mac to
   * delete the MAC filters from the hardware.
   */
  static int ice_add_mac_to_unsync_list(struct net_device *netdev, const u8 *addr)
  {
  	struct ice_netdev_priv *np = netdev_priv(netdev);
  	struct ice_vsi *vsi = np->vsi;
  
  	/* Under some circumstances, we might receive a request to delete our
  	 * own device address from our uc list. Because we store the device
  	 * address in the VSI's MAC filter list, we need to ignore such
  	 * requests and not delete our device address from this list.
  	 */
  	if (ether_addr_equal(addr, netdev->dev_addr))
  		return 0;
  
  	if (ice_fltr_add_mac_to_list(vsi, &vsi->tmp_unsync_list, addr,
  				     ICE_FWD_TO_VSI))
  		return -EINVAL;
  
  	return 0;
  }
  
  /**
   * ice_vsi_fltr_changed - check if filter state changed
   * @vsi: VSI to be checked
   *
   * returns true if filter state has changed, false otherwise.
   */
  static bool ice_vsi_fltr_changed(struct ice_vsi *vsi)
  {
  	return test_bit(ICE_VSI_FLAG_UMAC_FLTR_CHANGED, vsi->flags) ||
  	       test_bit(ICE_VSI_FLAG_MMAC_FLTR_CHANGED, vsi->flags) ||
  	       test_bit(ICE_VSI_FLAG_VLAN_FLTR_CHANGED, vsi->flags);
  }
  
  /**
   * ice_cfg_promisc - Enable or disable promiscuous mode for a given PF
   * @vsi: the VSI being configured
   * @promisc_m: mask of promiscuous config bits
   * @set_promisc: enable or disable promisc flag request
   *
   */
  static int ice_cfg_promisc(struct ice_vsi *vsi, u8 promisc_m, bool set_promisc)
  {
  	struct ice_hw *hw = &vsi->back->hw;
  	enum ice_status status = 0;
  
  	if (vsi->type != ICE_VSI_PF)
  		return 0;
  
  	if (vsi->vlan_ena) {
  		status = ice_set_vlan_vsi_promisc(hw, vsi->idx, promisc_m,
  						  set_promisc);
  	} else {
  		if (set_promisc)
  			status = ice_set_vsi_promisc(hw, vsi->idx, promisc_m,
  						     0);
  		else
  			status = ice_clear_vsi_promisc(hw, vsi->idx, promisc_m,
  						       0);
  	}
  
  	if (status)
  		return -EIO;
  
  	return 0;
  }
  
  /**
   * ice_vsi_sync_fltr - Update the VSI filter list to the HW
   * @vsi: ptr to the VSI
   *
   * Push any outstanding VSI filter changes through the AdminQ.
   */
  static int ice_vsi_sync_fltr(struct ice_vsi *vsi)
  {
  	struct device *dev = ice_pf_to_dev(vsi->back);
  	struct net_device *netdev = vsi->netdev;
  	bool promisc_forced_on = false;
  	struct ice_pf *pf = vsi->back;
  	struct ice_hw *hw = &pf->hw;
  	enum ice_status status = 0;
  	u32 changed_flags = 0;
  	u8 promisc_m;
  	int err = 0;
  
  	if (!vsi->netdev)
  		return -EINVAL;
  
  	while (test_and_set_bit(__ICE_CFG_BUSY, vsi->state))
  		usleep_range(1000, 2000);
  
  	changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
  	vsi->current_netdev_flags = vsi->netdev->flags;
  
  	INIT_LIST_HEAD(&vsi->tmp_sync_list);
  	INIT_LIST_HEAD(&vsi->tmp_unsync_list);
  
  	if (ice_vsi_fltr_changed(vsi)) {
  		clear_bit(ICE_VSI_FLAG_UMAC_FLTR_CHANGED, vsi->flags);
  		clear_bit(ICE_VSI_FLAG_MMAC_FLTR_CHANGED, vsi->flags);
  		clear_bit(ICE_VSI_FLAG_VLAN_FLTR_CHANGED, vsi->flags);
  
  		/* grab the netdev's addr_list_lock */
  		netif_addr_lock_bh(netdev);
  		__dev_uc_sync(netdev, ice_add_mac_to_sync_list,
  			      ice_add_mac_to_unsync_list);
  		__dev_mc_sync(netdev, ice_add_mac_to_sync_list,
  			      ice_add_mac_to_unsync_list);
  		/* our temp lists are populated. release lock */
  		netif_addr_unlock_bh(netdev);
  	}
  
  	/* Remove MAC addresses in the unsync list */
  	status = ice_fltr_remove_mac_list(vsi, &vsi->tmp_unsync_list);
  	ice_fltr_free_list(dev, &vsi->tmp_unsync_list);
  	if (status) {
  		netdev_err(netdev, "Failed to delete MAC filters\n");
  		/* if we failed because of alloc failures, just bail */
  		if (status == ICE_ERR_NO_MEMORY) {
  			err = -ENOMEM;
  			goto out;
  		}
  	}
  
  	/* Add MAC addresses in the sync list */
  	status = ice_fltr_add_mac_list(vsi, &vsi->tmp_sync_list);
  	ice_fltr_free_list(dev, &vsi->tmp_sync_list);
  	/* If filter is added successfully or already exists, do not go into
  	 * 'if' condition and report it as error. Instead continue processing
  	 * rest of the function.
  	 */
  	if (status && status != ICE_ERR_ALREADY_EXISTS) {
  		netdev_err(netdev, "Failed to add MAC filters\n");
  		/* If there is no more space for new umac filters, VSI
  		 * should go into promiscuous mode. There should be some
  		 * space reserved for promiscuous filters.
  		 */
  		if (hw->adminq.sq_last_status == ICE_AQ_RC_ENOSPC &&
  		    !test_and_set_bit(__ICE_FLTR_OVERFLOW_PROMISC,
  				      vsi->state)) {
  			promisc_forced_on = true;
  			netdev_warn(netdev, "Reached MAC filter limit, forcing promisc mode on VSI %d\n",
  				    vsi->vsi_num);
  		} else {
  			err = -EIO;
  			goto out;
  		}
  	}
  	/* check for changes in promiscuous modes */
  	if (changed_flags & IFF_ALLMULTI) {
  		if (vsi->current_netdev_flags & IFF_ALLMULTI) {
  			if (vsi->vlan_ena)
  				promisc_m = ICE_MCAST_VLAN_PROMISC_BITS;
  			else
  				promisc_m = ICE_MCAST_PROMISC_BITS;
  
  			err = ice_cfg_promisc(vsi, promisc_m, true);
  			if (err) {
  				netdev_err(netdev, "Error setting Multicast promiscuous mode on VSI %i\n",
  					   vsi->vsi_num);
  				vsi->current_netdev_flags &= ~IFF_ALLMULTI;
  				goto out_promisc;
  			}
  		} else {
  			/* !(vsi->current_netdev_flags & IFF_ALLMULTI) */
  			if (vsi->vlan_ena)
  				promisc_m = ICE_MCAST_VLAN_PROMISC_BITS;
  			else
  				promisc_m = ICE_MCAST_PROMISC_BITS;
  
  			err = ice_cfg_promisc(vsi, promisc_m, false);
  			if (err) {
  				netdev_err(netdev, "Error clearing Multicast promiscuous mode on VSI %i\n",
  					   vsi->vsi_num);
  				vsi->current_netdev_flags |= IFF_ALLMULTI;
  				goto out_promisc;
  			}
  		}
  	}
  
  	if (((changed_flags & IFF_PROMISC) || promisc_forced_on) ||
  	    test_bit(ICE_VSI_FLAG_PROMISC_CHANGED, vsi->flags)) {
  		clear_bit(ICE_VSI_FLAG_PROMISC_CHANGED, vsi->flags);
  		if (vsi->current_netdev_flags & IFF_PROMISC) {
  			/* Apply Rx filter rule to get traffic from wire */
  			if (!ice_is_dflt_vsi_in_use(pf->first_sw)) {
  				err = ice_set_dflt_vsi(pf->first_sw, vsi);
  				if (err && err != -EEXIST) {
  					netdev_err(netdev, "Error %d setting default VSI %i Rx rule\n",
  						   err, vsi->vsi_num);
  					vsi->current_netdev_flags &=
  						~IFF_PROMISC;
  					goto out_promisc;
  				}
  				ice_cfg_vlan_pruning(vsi, false, false);
  			}
  		} else {
  			/* Clear Rx filter to remove traffic from wire */
  			if (ice_is_vsi_dflt_vsi(pf->first_sw, vsi)) {
  				err = ice_clear_dflt_vsi(pf->first_sw);
  				if (err) {
  					netdev_err(netdev, "Error %d clearing default VSI %i Rx rule\n",
  						   err, vsi->vsi_num);
  					vsi->current_netdev_flags |=
  						IFF_PROMISC;
  					goto out_promisc;
  				}
  				if (vsi->num_vlan > 1)
  					ice_cfg_vlan_pruning(vsi, true, false);
  			}
  		}
  	}
  	goto exit;
  
  out_promisc:
  	set_bit(ICE_VSI_FLAG_PROMISC_CHANGED, vsi->flags);
  	goto exit;
  out:
  	/* if something went wrong then set the changed flag so we try again */
  	set_bit(ICE_VSI_FLAG_UMAC_FLTR_CHANGED, vsi->flags);
  	set_bit(ICE_VSI_FLAG_MMAC_FLTR_CHANGED, vsi->flags);
  exit:
  	clear_bit(__ICE_CFG_BUSY, vsi->state);
  	return err;
  }
  
  /**
   * ice_sync_fltr_subtask - Sync the VSI filter list with HW
   * @pf: board private structure
   */
  static void ice_sync_fltr_subtask(struct ice_pf *pf)
  {
  	int v;
  
  	if (!pf || !(test_bit(ICE_FLAG_FLTR_SYNC, pf->flags)))
  		return;
  
  	clear_bit(ICE_FLAG_FLTR_SYNC, pf->flags);
  
  	ice_for_each_vsi(pf, v)
  		if (pf->vsi[v] && ice_vsi_fltr_changed(pf->vsi[v]) &&
  		    ice_vsi_sync_fltr(pf->vsi[v])) {
  			/* come back and try again later */
  			set_bit(ICE_FLAG_FLTR_SYNC, pf->flags);
  			break;
  		}
  }
  
  /**
   * ice_pf_dis_all_vsi - Pause all VSIs on a PF
   * @pf: the PF
   * @locked: is the rtnl_lock already held
   */
  static void ice_pf_dis_all_vsi(struct ice_pf *pf, bool locked)
  {
  	int v;
  
  	ice_for_each_vsi(pf, v)
  		if (pf->vsi[v])
  			ice_dis_vsi(pf->vsi[v], locked);
  }
  
  /**
   * ice_prepare_for_reset - prep for the core to reset
   * @pf: board private structure
   *
   * Inform or close all dependent features in prep for reset.
   */
  static void
  ice_prepare_for_reset(struct ice_pf *pf)
  {
  	struct ice_hw *hw = &pf->hw;
  	unsigned int i;
  
  	/* already prepared for reset */
  	if (test_bit(__ICE_PREPARED_FOR_RESET, pf->state))
  		return;
  
  	/* Notify VFs of impending reset */
  	if (ice_check_sq_alive(hw, &hw->mailboxq))
  		ice_vc_notify_reset(pf);
  
  	/* Disable VFs until reset is completed */
  	ice_for_each_vf(pf, i)
  		ice_set_vf_state_qs_dis(&pf->vf[i]);
  
  	/* clear SW filtering DB */
  	ice_clear_hw_tbls(hw);
  	/* disable the VSIs and their queues that are not already DOWN */
  	ice_pf_dis_all_vsi(pf, false);
  
  	if (hw->port_info)
  		ice_sched_clear_port(hw->port_info);
  
  	ice_shutdown_all_ctrlq(hw);
  
  	set_bit(__ICE_PREPARED_FOR_RESET, pf->state);
  }
  
  /**
   * ice_do_reset - Initiate one of many types of resets
   * @pf: board private structure
   * @reset_type: reset type requested
   * before this function was called.
   */
  static void ice_do_reset(struct ice_pf *pf, enum ice_reset_req reset_type)
  {
  	struct device *dev = ice_pf_to_dev(pf);
  	struct ice_hw *hw = &pf->hw;
  
  	dev_dbg(dev, "reset_type 0x%x requested\n", reset_type);
  
  	ice_prepare_for_reset(pf);
  
  	/* trigger the reset */
  	if (ice_reset(hw, reset_type)) {
  		dev_err(dev, "reset %d failed\n", reset_type);
  		set_bit(__ICE_RESET_FAILED, pf->state);
  		clear_bit(__ICE_RESET_OICR_RECV, pf->state);
  		clear_bit(__ICE_PREPARED_FOR_RESET, pf->state);
  		clear_bit(__ICE_PFR_REQ, pf->state);
  		clear_bit(__ICE_CORER_REQ, pf->state);
  		clear_bit(__ICE_GLOBR_REQ, pf->state);
  		return;
  	}
  
  	/* PFR is a bit of a special case because it doesn't result in an OICR
  	 * interrupt. So for PFR, rebuild after the reset and clear the reset-
  	 * associated state bits.
  	 */
  	if (reset_type == ICE_RESET_PFR) {
  		pf->pfr_count++;
  		ice_rebuild(pf, reset_type);
  		clear_bit(__ICE_PREPARED_FOR_RESET, pf->state);
  		clear_bit(__ICE_PFR_REQ, pf->state);
  		ice_reset_all_vfs(pf, true);
  	}
  }
  
  /**
   * ice_reset_subtask - Set up for resetting the device and driver
   * @pf: board private structure
   */
  static void ice_reset_subtask(struct ice_pf *pf)
  {
  	enum ice_reset_req reset_type = ICE_RESET_INVAL;
  
  	/* When a CORER/GLOBR/EMPR is about to happen, the hardware triggers an
  	 * OICR interrupt. The OICR handler (ice_misc_intr) determines what type
  	 * of reset is pending and sets bits in pf->state indicating the reset
  	 * type and __ICE_RESET_OICR_RECV. So, if the latter bit is set
  	 * prepare for pending reset if not already (for PF software-initiated
  	 * global resets the software should already be prepared for it as
  	 * indicated by __ICE_PREPARED_FOR_RESET; for global resets initiated
  	 * by firmware or software on other PFs, that bit is not set so prepare
  	 * for the reset now), poll for reset done, rebuild and return.
  	 */
  	if (test_bit(__ICE_RESET_OICR_RECV, pf->state)) {
  		/* Perform the largest reset requested */
  		if (test_and_clear_bit(__ICE_CORER_RECV, pf->state))
  			reset_type = ICE_RESET_CORER;
  		if (test_and_clear_bit(__ICE_GLOBR_RECV, pf->state))
  			reset_type = ICE_RESET_GLOBR;
  		if (test_and_clear_bit(__ICE_EMPR_RECV, pf->state))
  			reset_type = ICE_RESET_EMPR;
  		/* return if no valid reset type requested */
  		if (reset_type == ICE_RESET_INVAL)
  			return;
  		ice_prepare_for_reset(pf);
  
  		/* make sure we are ready to rebuild */
  		if (ice_check_reset(&pf->hw)) {
  			set_bit(__ICE_RESET_FAILED, pf->state);
  		} else {
  			/* done with reset. start rebuild */
  			pf->hw.reset_ongoing = false;
  			ice_rebuild(pf, reset_type);
  			/* clear bit to resume normal operations, but
  			 * ICE_NEEDS_RESTART bit is set in case rebuild failed
  			 */
  			clear_bit(__ICE_RESET_OICR_RECV, pf->state);
  			clear_bit(__ICE_PREPARED_FOR_RESET, pf->state);
  			clear_bit(__ICE_PFR_REQ, pf->state);
  			clear_bit(__ICE_CORER_REQ, pf->state);
  			clear_bit(__ICE_GLOBR_REQ, pf->state);
  			ice_reset_all_vfs(pf, true);
  		}
  
  		return;
  	}
  
  	/* No pending resets to finish processing. Check for new resets */
  	if (test_bit(__ICE_PFR_REQ, pf->state))
  		reset_type = ICE_RESET_PFR;
  	if (test_bit(__ICE_CORER_REQ, pf->state))
  		reset_type = ICE_RESET_CORER;
  	if (test_bit(__ICE_GLOBR_REQ, pf->state))
  		reset_type = ICE_RESET_GLOBR;
  	/* If no valid reset type requested just return */
  	if (reset_type == ICE_RESET_INVAL)
  		return;
  
  	/* reset if not already down or busy */
  	if (!test_bit(__ICE_DOWN, pf->state) &&
  	    !test_bit(__ICE_CFG_BUSY, pf->state)) {
  		ice_do_reset(pf, reset_type);
  	}
  }
  
  /**
   * ice_print_topo_conflict - print topology conflict message
   * @vsi: the VSI whose topology status is being checked
   */
  static void ice_print_topo_conflict(struct ice_vsi *vsi)
  {
  	switch (vsi->port_info->phy.link_info.topo_media_conflict) {
  	case ICE_AQ_LINK_TOPO_CONFLICT:
  	case ICE_AQ_LINK_MEDIA_CONFLICT:
  	case ICE_AQ_LINK_TOPO_UNREACH_PRT:
  	case ICE_AQ_LINK_TOPO_UNDRUTIL_PRT:
  	case ICE_AQ_LINK_TOPO_UNDRUTIL_MEDIA:
  		netdev_info(vsi->netdev, "Possible mis-configuration of the Ethernet port detected, please use the Intel(R) Ethernet Port Configuration Tool application to address the issue.\n");
  		break;
  	case ICE_AQ_LINK_TOPO_UNSUPP_MEDIA:
  		netdev_info(vsi->netdev, "Rx/Tx is disabled on this device because an unsupported module type was detected. Refer to the Intel(R) Ethernet Adapters and Devices User Guide for a list of supported modules.\n");
  		break;
  	default:
  		break;
  	}
  }
  
  /**
   * ice_print_link_msg - print link up or down message
   * @vsi: the VSI whose link status is being queried
   * @isup: boolean for if the link is now up or down
   */
  void ice_print_link_msg(struct ice_vsi *vsi, bool isup)
  {
  	struct ice_aqc_get_phy_caps_data *caps;
  	const char *an_advertised;
  	enum ice_status status;
  	const char *fec_req;
  	const char *speed;
  	const char *fec;
  	const char *fc;
  	const char *an;
  
  	if (!vsi)
  		return;
  
  	if (vsi->current_isup == isup)
  		return;
  
  	vsi->current_isup = isup;
  
  	if (!isup) {
  		netdev_info(vsi->netdev, "NIC Link is Down\n");
  		return;
  	}
  
  	switch (vsi->port_info->phy.link_info.link_speed) {
  	case ICE_AQ_LINK_SPEED_100GB:
  		speed = "100 G";
  		break;
  	case ICE_AQ_LINK_SPEED_50GB:
  		speed = "50 G";
  		break;
  	case ICE_AQ_LINK_SPEED_40GB:
  		speed = "40 G";
  		break;
  	case ICE_AQ_LINK_SPEED_25GB:
  		speed = "25 G";
  		break;
  	case ICE_AQ_LINK_SPEED_20GB:
  		speed = "20 G";
  		break;
  	case ICE_AQ_LINK_SPEED_10GB:
  		speed = "10 G";
  		break;
  	case ICE_AQ_LINK_SPEED_5GB:
  		speed = "5 G";
  		break;
  	case ICE_AQ_LINK_SPEED_2500MB:
  		speed = "2.5 G";
  		break;
  	case ICE_AQ_LINK_SPEED_1000MB:
  		speed = "1 G";
  		break;
  	case ICE_AQ_LINK_SPEED_100MB:
  		speed = "100 M";
  		break;
  	default:
  		speed = "Unknown";
  		break;
  	}
  
  	switch (vsi->port_info->fc.current_mode) {
  	case ICE_FC_FULL:
  		fc = "Rx/Tx";
  		break;
  	case ICE_FC_TX_PAUSE:
  		fc = "Tx";
  		break;
  	case ICE_FC_RX_PAUSE:
  		fc = "Rx";
  		break;
  	case ICE_FC_NONE:
  		fc = "None";
  		break;
  	default:
  		fc = "Unknown";
  		break;
  	}
  
  	/* Get FEC mode based on negotiated link info */
  	switch (vsi->port_info->phy.link_info.fec_info) {
  	case ICE_AQ_LINK_25G_RS_528_FEC_EN:
  	case ICE_AQ_LINK_25G_RS_544_FEC_EN:
  		fec = "RS-FEC";
  		break;
  	case ICE_AQ_LINK_25G_KR_FEC_EN:
  		fec = "FC-FEC/BASE-R";
  		break;
  	default:
  		fec = "NONE";
  		break;
  	}
  
  	/* check if autoneg completed, might be false due to not supported */
  	if (vsi->port_info->phy.link_info.an_info & ICE_AQ_AN_COMPLETED)
  		an = "True";
  	else
  		an = "False";
  
  	/* Get FEC mode requested based on PHY caps last SW configuration */
  	caps = kzalloc(sizeof(*caps), GFP_KERNEL);
  	if (!caps) {
  		fec_req = "Unknown";
  		an_advertised = "Unknown";
  		goto done;
  	}
  
  	status = ice_aq_get_phy_caps(vsi->port_info, false,
  				     ICE_AQC_REPORT_SW_CFG, caps, NULL);
  	if (status)
  		netdev_info(vsi->netdev, "Get phy capability failed.\n");
  
  	an_advertised = ice_is_phy_caps_an_enabled(caps) ? "On" : "Off";
  
  	if (caps->link_fec_options & ICE_AQC_PHY_FEC_25G_RS_528_REQ ||
  	    caps->link_fec_options & ICE_AQC_PHY_FEC_25G_RS_544_REQ)
  		fec_req = "RS-FEC";
  	else if (caps->link_fec_options & ICE_AQC_PHY_FEC_10G_KR_40G_KR4_REQ ||
  		 caps->link_fec_options & ICE_AQC_PHY_FEC_25G_KR_REQ)
  		fec_req = "FC-FEC/BASE-R";
  	else
  		fec_req = "NONE";
  
  	kfree(caps);
  
  done:
  	netdev_info(vsi->netdev, "NIC Link is up %sbps Full Duplex, Requested FEC: %s, Negotiated FEC: %s, Autoneg Advertised: %s, Autoneg Negotiated: %s, Flow Control: %s\n",
  		    speed, fec_req, fec, an_advertised, an, fc);
  	ice_print_topo_conflict(vsi);
  }
  
  /**
   * ice_vsi_link_event - update the VSI's netdev
   * @vsi: the VSI on which the link event occurred
   * @link_up: whether or not the VSI needs to be set up or down
   */
  static void ice_vsi_link_event(struct ice_vsi *vsi, bool link_up)
  {
  	if (!vsi)
  		return;
  
  	if (test_bit(__ICE_DOWN, vsi->state) || !vsi->netdev)
  		return;
  
  	if (vsi->type == ICE_VSI_PF) {
  		if (link_up == netif_carrier_ok(vsi->netdev))
  			return;
  
  		if (link_up) {
  			netif_carrier_on(vsi->netdev);
  			netif_tx_wake_all_queues(vsi->netdev);
  		} else {
  			netif_carrier_off(vsi->netdev);
  			netif_tx_stop_all_queues(vsi->netdev);
  		}
  	}
  }
  
  /**
   * ice_set_dflt_mib - send a default config MIB to the FW
   * @pf: private PF struct
   *
   * This function sends a default configuration MIB to the FW.
   *
   * If this function errors out at any point, the driver is still able to
   * function.  The main impact is that LFC may not operate as expected.
   * Therefore an error state in this function should be treated with a DBG
   * message and continue on with driver rebuild/reenable.
   */
  static void ice_set_dflt_mib(struct ice_pf *pf)
  {
  	struct device *dev = ice_pf_to_dev(pf);
  	u8 mib_type, *buf, *lldpmib = NULL;
  	u16 len, typelen, offset = 0;
  	struct ice_lldp_org_tlv *tlv;
  	struct ice_hw *hw;
  	u32 ouisubtype;
  
  	if (!pf) {
  		dev_dbg(dev, "%s NULL pf pointer\n", __func__);
  		return;
  	}
  
  	hw = &pf->hw;
  	mib_type = SET_LOCAL_MIB_TYPE_LOCAL_MIB;
  	lldpmib = kzalloc(ICE_LLDPDU_SIZE, GFP_KERNEL);
  	if (!lldpmib) {
  		dev_dbg(dev, "%s Failed to allocate MIB memory\n",
  			__func__);
  		return;
  	}
  
  	/* Add ETS CFG TLV */
  	tlv = (struct ice_lldp_org_tlv *)lldpmib;
  	typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
  		   ICE_IEEE_ETS_TLV_LEN);
  	tlv->typelen = htons(typelen);
  	ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
  		      ICE_IEEE_SUBTYPE_ETS_CFG);
  	tlv->ouisubtype = htonl(ouisubtype);
  
  	buf = tlv->tlvinfo;
  	buf[0] = 0;
  
  	/* ETS CFG all UPs map to TC 0. Next 4 (1 - 4) Octets = 0.
  	 * Octets 5 - 12 are BW values, set octet 5 to 100% BW.
  	 * Octets 13 - 20 are TSA values - leave as zeros
  	 */
  	buf[5] = 0x64;
  	len = (typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S;
  	offset += len + 2;
  	tlv = (struct ice_lldp_org_tlv *)
  		((char *)tlv + sizeof(tlv->typelen) + len);
  
  	/* Add ETS REC TLV */
  	buf = tlv->tlvinfo;
  	tlv->typelen = htons(typelen);
  
  	ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
  		      ICE_IEEE_SUBTYPE_ETS_REC);
  	tlv->ouisubtype = htonl(ouisubtype);
  
  	/* First octet of buf is reserved
  	 * Octets 1 - 4 map UP to TC - all UPs map to zero
  	 * Octets 5 - 12 are BW values - set TC 0 to 100%.
  	 * Octets 13 - 20 are TSA value - leave as zeros
  	 */
  	buf[5] = 0x64;
  	offset += len + 2;
  	tlv = (struct ice_lldp_org_tlv *)
  		((char *)tlv + sizeof(tlv->typelen) + len);
  
  	/* Add PFC CFG TLV */
  	typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
  		   ICE_IEEE_PFC_TLV_LEN);
  	tlv->typelen = htons(typelen);
  
  	ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
  		      ICE_IEEE_SUBTYPE_PFC_CFG);
  	tlv->ouisubtype = htonl(ouisubtype);
  
  	/* Octet 1 left as all zeros - PFC disabled */
  	buf[0] = 0x08;
  	len = (typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S;
  	offset += len + 2;
  
  	if (ice_aq_set_lldp_mib(hw, mib_type, (void *)lldpmib, offset, NULL))
  		dev_dbg(dev, "%s Failed to set default LLDP MIB\n", __func__);
  
  	kfree(lldpmib);
  }
  
  /**
   * ice_link_event - process the link event
   * @pf: PF that the link event is associated with
   * @pi: port_info for the port that the link event is associated with
   * @link_up: true if the physical link is up and false if it is down
   * @link_speed: current link speed received from the link event
   *
   * Returns 0 on success and negative on failure
   */
  static int
  ice_link_event(struct ice_pf *pf, struct ice_port_info *pi, bool link_up,
  	       u16 link_speed)
  {
  	struct device *dev = ice_pf_to_dev(pf);
  	struct ice_phy_info *phy_info;
  	struct ice_vsi *vsi;
  	u16 old_link_speed;
  	bool old_link;
  	int result;
  
  	phy_info = &pi->phy;
  	phy_info->link_info_old = phy_info->link_info;
  
  	old_link = !!(phy_info->link_info_old.link_info & ICE_AQ_LINK_UP);
  	old_link_speed = phy_info->link_info_old.link_speed;
  
  	/* update the link info structures and re-enable link events,
  	 * don't bail on failure due to other book keeping needed
  	 */
  	result = ice_update_link_info(pi);
  	if (result)
  		dev_dbg(dev, "Failed to update link status and re-enable link events for port %d\n",
  			pi->lport);
  
  	/* Check if the link state is up after updating link info, and treat
  	 * this event as an UP event since the link is actually UP now.
  	 */
  	if (phy_info->link_info.link_info & ICE_AQ_LINK_UP)
  		link_up = true;
  
  	vsi = ice_get_main_vsi(pf);
  	if (!vsi || !vsi->port_info)
  		return -EINVAL;
  
  	/* turn off PHY if media was removed */
  	if (!test_bit(ICE_FLAG_NO_MEDIA, pf->flags) &&
  	    !(pi->phy.link_info.link_info & ICE_AQ_MEDIA_AVAILABLE)) {
  		set_bit(ICE_FLAG_NO_MEDIA, pf->flags);
  
  		result = ice_aq_set_link_restart_an(pi, false, NULL);
  		if (result) {
  			dev_dbg(dev, "Failed to set link down, VSI %d error %d\n",
  				vsi->vsi_num, result);
  			return result;
  		}
  	}
  
  	/* if the old link up/down and speed is the same as the new */
  	if (link_up == old_link && link_speed == old_link_speed)
  		return result;
  
  	if (ice_is_dcb_active(pf)) {
  		if (test_bit(ICE_FLAG_DCB_ENA, pf->flags))
  			ice_dcb_rebuild(pf);
  	} else {
  		if (link_up)
  			ice_set_dflt_mib(pf);
  	}
  	ice_vsi_link_event(vsi, link_up);
  	ice_print_link_msg(vsi, link_up);
  
  	ice_vc_notify_link_state(pf);
  
  	return result;
  }
  
  /**
   * ice_watchdog_subtask - periodic tasks not using event driven scheduling
   * @pf: board private structure
   */
  static void ice_watchdog_subtask(struct ice_pf *pf)
  {
  	int i;
  
  	/* if interface is down do nothing */
  	if (test_bit(__ICE_DOWN, pf->state) ||
  	    test_bit(__ICE_CFG_BUSY, pf->state))
  		return;
  
  	/* make sure we don't do these things too often */
  	if (time_before(jiffies,
  			pf->serv_tmr_prev + pf->serv_tmr_period))
  		return;
  
  	pf->serv_tmr_prev = jiffies;
  
  	/* Update the stats for active netdevs so the network stack
  	 * can look at updated numbers whenever it cares to
  	 */
  	ice_update_pf_stats(pf);
  	ice_for_each_vsi(pf, i)
  		if (pf->vsi[i] && pf->vsi[i]->netdev)
  			ice_update_vsi_stats(pf->vsi[i]);
  }
  
  /**
   * ice_init_link_events - enable/initialize link events
   * @pi: pointer to the port_info instance
   *
   * Returns -EIO on failure, 0 on success
   */
  static int ice_init_link_events(struct ice_port_info *pi)
  {
  	u16 mask;
  
  	mask = ~((u16)(ICE_AQ_LINK_EVENT_UPDOWN | ICE_AQ_LINK_EVENT_MEDIA_NA |
  		       ICE_AQ_LINK_EVENT_MODULE_QUAL_FAIL));
  
  	if (ice_aq_set_event_mask(pi->hw, pi->lport, mask, NULL)) {
  		dev_dbg(ice_hw_to_dev(pi->hw), "Failed to set link event mask for port %d\n",
  			pi->lport);
  		return -EIO;
  	}
  
  	if (ice_aq_get_link_info(pi, true, NULL, NULL)) {
  		dev_dbg(ice_hw_to_dev(pi->hw), "Failed to enable link events for port %d\n",
  			pi->lport);
  		return -EIO;
  	}
  
  	return 0;
  }
  
  /**
   * ice_handle_link_event - handle link event via ARQ
   * @pf: PF that the link event is associated with
   * @event: event structure containing link status info
   */
  static int
  ice_handle_link_event(struct ice_pf *pf, struct ice_rq_event_info *event)
  {
  	struct ice_aqc_get_link_status_data *link_data;
  	struct ice_port_info *port_info;
  	int status;
  
  	link_data = (struct ice_aqc_get_link_status_data *)event->msg_buf;
  	port_info = pf->hw.port_info;
  	if (!port_info)
  		return -EINVAL;
  
  	status = ice_link_event(pf, port_info,
  				!!(link_data->link_info & ICE_AQ_LINK_UP),
  				le16_to_cpu(link_data->link_speed));
  	if (status)
  		dev_dbg(ice_pf_to_dev(pf), "Could not process link event, error %d\n",
  			status);
  
  	return status;
  }
  
  enum ice_aq_task_state {
  	ICE_AQ_TASK_WAITING = 0,
  	ICE_AQ_TASK_COMPLETE,
  	ICE_AQ_TASK_CANCELED,
  };
  
  struct ice_aq_task {
  	struct hlist_node entry;
  
  	u16 opcode;
  	struct ice_rq_event_info *event;
  	enum ice_aq_task_state state;
  };
  
  /**
   * ice_wait_for_aq_event - Wait for an AdminQ event from firmware
   * @pf: pointer to the PF private structure
   * @opcode: the opcode to wait for
   * @timeout: how long to wait, in jiffies
   * @event: storage for the event info
   *
   * Waits for a specific AdminQ completion event on the ARQ for a given PF. The
   * current thread will be put to sleep until the specified event occurs or
   * until the given timeout is reached.
   *
   * To obtain only the descriptor contents, pass an event without an allocated
   * msg_buf. If the complete data buffer is desired, allocate the
   * event->msg_buf with enough space ahead of time.
   *
   * Returns: zero on success, or a negative error code on failure.
   */
  int ice_aq_wait_for_event(struct ice_pf *pf, u16 opcode, unsigned long timeout,
  			  struct ice_rq_event_info *event)
  {
  	struct device *dev = ice_pf_to_dev(pf);
  	struct ice_aq_task *task;
  	unsigned long start;
  	long ret;
  	int err;
  
  	task = kzalloc(sizeof(*task), GFP_KERNEL);
  	if (!task)
  		return -ENOMEM;
  
  	INIT_HLIST_NODE(&task->entry);
  	task->opcode = opcode;
  	task->event = event;
  	task->state = ICE_AQ_TASK_WAITING;
  
  	spin_lock_bh(&pf->aq_wait_lock);
  	hlist_add_head(&task->entry, &pf->aq_wait_list);
  	spin_unlock_bh(&pf->aq_wait_lock);
  
  	start = jiffies;
  
  	ret = wait_event_interruptible_timeout(pf->aq_wait_queue, task->state,
  					       timeout);
  	switch (task->state) {
  	case ICE_AQ_TASK_WAITING:
  		err = ret < 0 ? ret : -ETIMEDOUT;
  		break;
  	case ICE_AQ_TASK_CANCELED:
  		err = ret < 0 ? ret : -ECANCELED;
  		break;
  	case ICE_AQ_TASK_COMPLETE:
  		err = ret < 0 ? ret : 0;
  		break;
  	default:
  		WARN(1, "Unexpected AdminQ wait task state %u", task->state);
  		err = -EINVAL;
  		break;
  	}
  
  	dev_dbg(dev, "Waited %u msecs (max %u msecs) for firmware response to op 0x%04x\n",
  		jiffies_to_msecs(jiffies - start),
  		jiffies_to_msecs(timeout),
  		opcode);
  
  	spin_lock_bh(&pf->aq_wait_lock);
  	hlist_del(&task->entry);
  	spin_unlock_bh(&pf->aq_wait_lock);
  	kfree(task);
  
  	return err;
  }
  
  /**
   * ice_aq_check_events - Check if any thread is waiting for an AdminQ event
   * @pf: pointer to the PF private structure
   * @opcode: the opcode of the event
   * @event: the event to check
   *
   * Loops over the current list of pending threads waiting for an AdminQ event.
   * For each matching task, copy the contents of the event into the task
   * structure and wake up the thread.
   *
   * If multiple threads wait for the same opcode, they will all be woken up.
   *
   * Note that event->msg_buf will only be duplicated if the event has a buffer
   * with enough space already allocated. Otherwise, only the descriptor and
   * message length will be copied.
   *
   * Returns: true if an event was found, false otherwise
   */
  static void ice_aq_check_events(struct ice_pf *pf, u16 opcode,
  				struct ice_rq_event_info *event)
  {
  	struct ice_aq_task *task;
  	bool found = false;
  
  	spin_lock_bh(&pf->aq_wait_lock);
  	hlist_for_each_entry(task, &pf->aq_wait_list, entry) {
  		if (task->state || task->opcode != opcode)
  			continue;
  
  		memcpy(&task->event->desc, &event->desc, sizeof(event->desc));
  		task->event->msg_len = event->msg_len;
  
  		/* Only copy the data buffer if a destination was set */
  		if (task->event->msg_buf &&
  		    task->event->buf_len > event->buf_len) {
  			memcpy(task->event->msg_buf, event->msg_buf,
  			       event->buf_len);
  			task->event->buf_len = event->buf_len;
  		}
  
  		task->state = ICE_AQ_TASK_COMPLETE;
  		found = true;
  	}
  	spin_unlock_bh(&pf->aq_wait_lock);
  
  	if (found)
  		wake_up(&pf->aq_wait_queue);
  }
  
  /**
   * ice_aq_cancel_waiting_tasks - Immediately cancel all waiting tasks
   * @pf: the PF private structure
   *
   * Set all waiting tasks to ICE_AQ_TASK_CANCELED, and wake up their threads.
   * This will then cause ice_aq_wait_for_event to exit with -ECANCELED.
   */
  static void ice_aq_cancel_waiting_tasks(struct ice_pf *pf)
  {
  	struct ice_aq_task *task;
  
  	spin_lock_bh(&pf->aq_wait_lock);
  	hlist_for_each_entry(task, &pf->aq_wait_list, entry)
  		task->state = ICE_AQ_TASK_CANCELED;
  	spin_unlock_bh(&pf->aq_wait_lock);
  
  	wake_up(&pf->aq_wait_queue);
  }
  
  /**
   * __ice_clean_ctrlq - helper function to clean controlq rings
   * @pf: ptr to struct ice_pf
   * @q_type: specific Control queue type
   */
  static int __ice_clean_ctrlq(struct ice_pf *pf, enum ice_ctl_q q_type)
  {
  	struct device *dev = ice_pf_to_dev(pf);
  	struct ice_rq_event_info event;
  	struct ice_hw *hw = &pf->hw;
  	struct ice_ctl_q_info *cq;
  	u16 pending, i = 0;
  	const char *qtype;
  	u32 oldval, val;
  
  	/* Do not clean control queue if/when PF reset fails */
  	if (test_bit(__ICE_RESET_FAILED, pf->state))
  		return 0;
  
  	switch (q_type) {
  	case ICE_CTL_Q_ADMIN:
  		cq = &hw->adminq;
  		qtype = "Admin";
  		break;
  	case ICE_CTL_Q_MAILBOX:
  		cq = &hw->mailboxq;
  		qtype = "Mailbox";
  		break;
  	default:
  		dev_warn(dev, "Unknown control queue type 0x%x\n", q_type);
  		return 0;
  	}
  
  	/* check for error indications - PF_xx_AxQLEN register layout for
  	 * FW/MBX/SB are identical so just use defines for PF_FW_AxQLEN.
  	 */
  	val = rd32(hw, cq->rq.len);
  	if (val & (PF_FW_ARQLEN_ARQVFE_M | PF_FW_ARQLEN_ARQOVFL_M |
  		   PF_FW_ARQLEN_ARQCRIT_M)) {
  		oldval = val;
  		if (val & PF_FW_ARQLEN_ARQVFE_M)
  			dev_dbg(dev, "%s Receive Queue VF Error detected\n",
  				qtype);
  		if (val & PF_FW_ARQLEN_ARQOVFL_M) {
  			dev_dbg(dev, "%s Receive Queue Overflow Error detected\n",
  				qtype);
  		}
  		if (val & PF_FW_ARQLEN_ARQCRIT_M)
  			dev_dbg(dev, "%s Receive Queue Critical Error detected\n",
  				qtype);
  		val &= ~(PF_FW_ARQLEN_ARQVFE_M | PF_FW_ARQLEN_ARQOVFL_M |
  			 PF_FW_ARQLEN_ARQCRIT_M);
  		if (oldval != val)
  			wr32(hw, cq->rq.len, val);
  	}
  
  	val = rd32(hw, cq->sq.len);
  	if (val & (PF_FW_ATQLEN_ATQVFE_M | PF_FW_ATQLEN_ATQOVFL_M |
  		   PF_FW_ATQLEN_ATQCRIT_M)) {
  		oldval = val;
  		if (val & PF_FW_ATQLEN_ATQVFE_M)
  			dev_dbg(dev, "%s Send Queue VF Error detected\n",
  				qtype);
  		if (val & PF_FW_ATQLEN_ATQOVFL_M) {
  			dev_dbg(dev, "%s Send Queue Overflow Error detected\n",
  				qtype);
  		}
  		if (val & PF_FW_ATQLEN_ATQCRIT_M)
  			dev_dbg(dev, "%s Send Queue Critical Error detected\n",
  				qtype);
  		val &= ~(PF_FW_ATQLEN_ATQVFE_M | PF_FW_ATQLEN_ATQOVFL_M |
  			 PF_FW_ATQLEN_ATQCRIT_M);
  		if (oldval != val)
  			wr32(hw, cq->sq.len, val);
  	}
  
  	event.buf_len = cq->rq_buf_size;
  	event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
  	if (!event.msg_buf)
  		return 0;
  
  	do {
  		enum ice_status ret;
  		u16 opcode;
  
  		ret = ice_clean_rq_elem(hw, cq, &event, &pending);
  		if (ret == ICE_ERR_AQ_NO_WORK)
  			break;
  		if (ret) {
  			dev_err(dev, "%s Receive Queue event error %s\n", qtype,
  				ice_stat_str(ret));
  			break;
  		}
  
  		opcode = le16_to_cpu(event.desc.opcode);
  
  		/* Notify any thread that might be waiting for this event */
  		ice_aq_check_events(pf, opcode, &event);
  
  		switch (opcode) {
  		case ice_aqc_opc_get_link_status:
  			if (ice_handle_link_event(pf, &event))
  				dev_err(dev, "Could not handle link event\n");
  			break;
  		case ice_aqc_opc_event_lan_overflow:
  			ice_vf_lan_overflow_event(pf, &event);
  			break;
  		case ice_mbx_opc_send_msg_to_pf:
  			ice_vc_process_vf_msg(pf, &event);
  			break;
  		case ice_aqc_opc_fw_logging:
  			ice_output_fw_log(hw, &event.desc, event.msg_buf);
  			break;
  		case ice_aqc_opc_lldp_set_mib_change:
  			ice_dcb_process_lldp_set_mib_change(pf, &event);
  			break;
  		default:
  			dev_dbg(dev, "%s Receive Queue unknown event 0x%04x ignored\n",
  				qtype, opcode);
  			break;
  		}
  	} while (pending && (i++ < ICE_DFLT_IRQ_WORK));
  
  	kfree(event.msg_buf);
  
  	return pending && (i == ICE_DFLT_IRQ_WORK);
  }
  
  /**
   * ice_ctrlq_pending - check if there is a difference between ntc and ntu
   * @hw: pointer to hardware info
   * @cq: control queue information
   *
   * returns true if there are pending messages in a queue, false if there aren't
   */
  static bool ice_ctrlq_pending(struct ice_hw *hw, struct ice_ctl_q_info *cq)
  {
  	u16 ntu;
  
  	ntu = (u16)(rd32(hw, cq->rq.head) & cq->rq.head_mask);
  	return cq->rq.next_to_clean != ntu;
  }
  
  /**
   * ice_clean_adminq_subtask - clean the AdminQ rings
   * @pf: board private structure
   */
  static void ice_clean_adminq_subtask(struct ice_pf *pf)
  {
  	struct ice_hw *hw = &pf->hw;
  
  	if (!test_bit(__ICE_ADMINQ_EVENT_PENDING, pf->state))
  		return;
  
  	if (__ice_clean_ctrlq(pf, ICE_CTL_Q_ADMIN))
  		return;
  
  	clear_bit(__ICE_ADMINQ_EVENT_PENDING, pf->state);
  
  	/* There might be a situation where new messages arrive to a control
  	 * queue between processing the last message and clearing the
  	 * EVENT_PENDING bit. So before exiting, check queue head again (using
  	 * ice_ctrlq_pending) and process new messages if any.
  	 */
  	if (ice_ctrlq_pending(hw, &hw->adminq))
  		__ice_clean_ctrlq(pf, ICE_CTL_Q_ADMIN);
  
  	ice_flush(hw);
  }
  
  /**
   * ice_clean_mailboxq_subtask - clean the MailboxQ rings
   * @pf: board private structure
   */
  static void ice_clean_mailboxq_subtask(struct ice_pf *pf)
  {
  	struct ice_hw *hw = &pf->hw;
  
  	if (!test_bit(__ICE_MAILBOXQ_EVENT_PENDING, pf->state))
  		return;
  
  	if (__ice_clean_ctrlq(pf, ICE_CTL_Q_MAILBOX))
  		return;
  
  	clear_bit(__ICE_MAILBOXQ_EVENT_PENDING, pf->state);
  
  	if (ice_ctrlq_pending(hw, &hw->mailboxq))
  		__ice_clean_ctrlq(pf, ICE_CTL_Q_MAILBOX);
  
  	ice_flush(hw);
  }
  
  /**
   * ice_service_task_schedule - schedule the service task to wake up
   * @pf: board private structure
   *
   * If not already scheduled, this puts the task into the work queue.
   */
  void ice_service_task_schedule(struct ice_pf *pf)
  {
  	if (!test_bit(__ICE_SERVICE_DIS, pf->state) &&
  	    !test_and_set_bit(__ICE_SERVICE_SCHED, pf->state) &&
  	    !test_bit(__ICE_NEEDS_RESTART, pf->state))
  		queue_work(ice_wq, &pf->serv_task);
  }
  
  /**
   * ice_service_task_complete - finish up the service task
   * @pf: board private structure
   */
  static void ice_service_task_complete(struct ice_pf *pf)
  {
  	WARN_ON(!test_bit(__ICE_SERVICE_SCHED, pf->state));
  
  	/* force memory (pf->state) to sync before next service task */
  	smp_mb__before_atomic();
  	clear_bit(__ICE_SERVICE_SCHED, pf->state);
  }
  
  /**
   * ice_service_task_stop - stop service task and cancel works
   * @pf: board private structure
   *
   * Return 0 if the __ICE_SERVICE_DIS bit was not already set,
   * 1 otherwise.
   */
  static int ice_service_task_stop(struct ice_pf *pf)
  {
  	int ret;
  
  	ret = test_and_set_bit(__ICE_SERVICE_DIS, pf->state);
  
  	if (pf->serv_tmr.function)
  		del_timer_sync(&pf->serv_tmr);
  	if (pf->serv_task.func)
  		cancel_work_sync(&pf->serv_task);
  
  	clear_bit(__ICE_SERVICE_SCHED, pf->state);
  	return ret;
  }
  
  /**
   * ice_service_task_restart - restart service task and schedule works
   * @pf: board private structure
   *
   * This function is needed for suspend and resume works (e.g WoL scenario)
   */
  static void ice_service_task_restart(struct ice_pf *pf)
  {
  	clear_bit(__ICE_SERVICE_DIS, pf->state);
  	ice_service_task_schedule(pf);
  }
  
  /**
   * ice_service_timer - timer callback to schedule service task
   * @t: pointer to timer_list
   */
  static void ice_service_timer(struct timer_list *t)
  {
  	struct ice_pf *pf = from_timer(pf, t, serv_tmr);
  
  	mod_timer(&pf->serv_tmr, round_jiffies(pf->serv_tmr_period + jiffies));
  	ice_service_task_schedule(pf);
  }
  
  /**
   * ice_handle_mdd_event - handle malicious driver detect event
   * @pf: pointer to the PF structure
   *
   * Called from service task. OICR interrupt handler indicates MDD event.
   * VF MDD logging is guarded by net_ratelimit. Additional PF and VF log
   * messages are wrapped by netif_msg_[rx|tx]_err. Since VF Rx MDD events
   * disable the queue, the PF can be configured to reset the VF using ethtool
   * private flag mdd-auto-reset-vf.
   */
  static void ice_handle_mdd_event(struct ice_pf *pf)
  {
  	struct device *dev = ice_pf_to_dev(pf);
  	struct ice_hw *hw = &pf->hw;
  	unsigned int i;
  	u32 reg;
  
  	if (!test_and_clear_bit(__ICE_MDD_EVENT_PENDING, pf->state)) {
  		/* Since the VF MDD event logging is rate limited, check if
  		 * there are pending MDD events.
  		 */
  		ice_print_vfs_mdd_events(pf);
  		return;
  	}
  
  	/* find what triggered an MDD event */
  	reg = rd32(hw, GL_MDET_TX_PQM);
  	if (reg & GL_MDET_TX_PQM_VALID_M) {
  		u8 pf_num = (reg & GL_MDET_TX_PQM_PF_NUM_M) >>
  				GL_MDET_TX_PQM_PF_NUM_S;
  		u16 vf_num = (reg & GL_MDET_TX_PQM_VF_NUM_M) >>
  				GL_MDET_TX_PQM_VF_NUM_S;
  		u8 event = (reg & GL_MDET_TX_PQM_MAL_TYPE_M) >>
  				GL_MDET_TX_PQM_MAL_TYPE_S;
  		u16 queue = ((reg & GL_MDET_TX_PQM_QNUM_M) >>
  				GL_MDET_TX_PQM_QNUM_S);
  
  		if (netif_msg_tx_err(pf))
  			dev_info(dev, "Malicious Driver Detection event %d on TX queue %d PF# %d VF# %d\n",
  				 event, queue, pf_num, vf_num);
  		wr32(hw, GL_MDET_TX_PQM, 0xffffffff);
  	}
  
  	reg = rd32(hw, GL_MDET_TX_TCLAN);
  	if (reg & GL_MDET_TX_TCLAN_VALID_M) {
  		u8 pf_num = (reg & GL_MDET_TX_TCLAN_PF_NUM_M) >>
  				GL_MDET_TX_TCLAN_PF_NUM_S;
  		u16 vf_num = (reg & GL_MDET_TX_TCLAN_VF_NUM_M) >>
  				GL_MDET_TX_TCLAN_VF_NUM_S;
  		u8 event = (reg & GL_MDET_TX_TCLAN_MAL_TYPE_M) >>
  				GL_MDET_TX_TCLAN_MAL_TYPE_S;
  		u16 queue = ((reg & GL_MDET_TX_TCLAN_QNUM_M) >>
  				GL_MDET_TX_TCLAN_QNUM_S);
  
  		if (netif_msg_tx_err(pf))
  			dev_info(dev, "Malicious Driver Detection event %d on TX queue %d PF# %d VF# %d\n",
  				 event, queue, pf_num, vf_num);
  		wr32(hw, GL_MDET_TX_TCLAN, 0xffffffff);
  	}
  
  	reg = rd32(hw, GL_MDET_RX);
  	if (reg & GL_MDET_RX_VALID_M) {
  		u8 pf_num = (reg & GL_MDET_RX_PF_NUM_M) >>
  				GL_MDET_RX_PF_NUM_S;
  		u16 vf_num = (reg & GL_MDET_RX_VF_NUM_M) >>
  				GL_MDET_RX_VF_NUM_S;
  		u8 event = (reg & GL_MDET_RX_MAL_TYPE_M) >>
  				GL_MDET_RX_MAL_TYPE_S;
  		u16 queue = ((reg & GL_MDET_RX_QNUM_M) >>
  				GL_MDET_RX_QNUM_S);
  
  		if (netif_msg_rx_err(pf))
  			dev_info(dev, "Malicious Driver Detection event %d on RX queue %d PF# %d VF# %d\n",
  				 event, queue, pf_num, vf_num);
  		wr32(hw, GL_MDET_RX, 0xffffffff);
  	}
  
  	/* check to see if this PF caused an MDD event */
  	reg = rd32(hw, PF_MDET_TX_PQM);
  	if (reg & PF_MDET_TX_PQM_VALID_M) {
  		wr32(hw, PF_MDET_TX_PQM, 0xFFFF);
  		if (netif_msg_tx_err(pf))
  			dev_info(dev, "Malicious Driver Detection event TX_PQM detected on PF\n");
  	}
  
  	reg = rd32(hw, PF_MDET_TX_TCLAN);
  	if (reg & PF_MDET_TX_TCLAN_VALID_M) {
  		wr32(hw, PF_MDET_TX_TCLAN, 0xFFFF);
  		if (netif_msg_tx_err(pf))
  			dev_info(dev, "Malicious Driver Detection event TX_TCLAN detected on PF\n");
  	}
  
  	reg = rd32(hw, PF_MDET_RX);
  	if (reg & PF_MDET_RX_VALID_M) {
  		wr32(hw, PF_MDET_RX, 0xFFFF);
  		if (netif_msg_rx_err(pf))
  			dev_info(dev, "Malicious Driver Detection event RX detected on PF\n");
  	}
  
  	/* Check to see if one of the VFs caused an MDD event, and then
  	 * increment counters and set print pending
  	 */
  	ice_for_each_vf(pf, i) {
  		struct ice_vf *vf = &pf->vf[i];
  
  		reg = rd32(hw, VP_MDET_TX_PQM(i));
  		if (reg & VP_MDET_TX_PQM_VALID_M) {
  			wr32(hw, VP_MDET_TX_PQM(i), 0xFFFF);
  			vf->mdd_tx_events.count++;
  			set_bit(__ICE_MDD_VF_PRINT_PENDING, pf->state);
  			if (netif_msg_tx_err(pf))
  				dev_info(dev, "Malicious Driver Detection event TX_PQM detected on VF %d\n",
  					 i);
  		}
  
  		reg = rd32(hw, VP_MDET_TX_TCLAN(i));
  		if (reg & VP_MDET_TX_TCLAN_VALID_M) {
  			wr32(hw, VP_MDET_TX_TCLAN(i), 0xFFFF);
  			vf->mdd_tx_events.count++;
  			set_bit(__ICE_MDD_VF_PRINT_PENDING, pf->state);
  			if (netif_msg_tx_err(pf))
  				dev_info(dev, "Malicious Driver Detection event TX_TCLAN detected on VF %d\n",
  					 i);
  		}
  
  		reg = rd32(hw, VP_MDET_TX_TDPU(i));
  		if (reg & VP_MDET_TX_TDPU_VALID_M) {
  			wr32(hw, VP_MDET_TX_TDPU(i), 0xFFFF);
  			vf->mdd_tx_events.count++;
  			set_bit(__ICE_MDD_VF_PRINT_PENDING, pf->state);
  			if (netif_msg_tx_err(pf))
  				dev_info(dev, "Malicious Driver Detection event TX_TDPU detected on VF %d\n",
  					 i);
  		}
  
  		reg = rd32(hw, VP_MDET_RX(i));
  		if (reg & VP_MDET_RX_VALID_M) {
  			wr32(hw, VP_MDET_RX(i), 0xFFFF);
  			vf->mdd_rx_events.count++;
  			set_bit(__ICE_MDD_VF_PRINT_PENDING, pf->state);
  			if (netif_msg_rx_err(pf))
  				dev_info(dev, "Malicious Driver Detection event RX detected on VF %d\n",
  					 i);
  
  			/* Since the queue is disabled on VF Rx MDD events, the
  			 * PF can be configured to reset the VF through ethtool
  			 * private flag mdd-auto-reset-vf.
  			 */
  			if (test_bit(ICE_FLAG_MDD_AUTO_RESET_VF, pf->flags)) {
  				/* VF MDD event counters will be cleared by
  				 * reset, so print the event prior to reset.
  				 */
  				ice_print_vf_rx_mdd_event(vf);
  				ice_reset_vf(&pf->vf[i], false);
  			}
  		}
  	}
  
  	ice_print_vfs_mdd_events(pf);
  }
  
  /**
   * ice_force_phys_link_state - Force the physical link state
   * @vsi: VSI to force the physical link state to up/down
   * @link_up: true/false indicates to set the physical link to up/down
   *
   * Force the physical link state by getting the current PHY capabilities from
   * hardware and setting the PHY config based on the determined capabilities. If
   * link changes a link event will be triggered because both the Enable Automatic
   * Link Update and LESM Enable bits are set when setting the PHY capabilities.
   *
   * Returns 0 on success, negative on failure
   */
  static int ice_force_phys_link_state(struct ice_vsi *vsi, bool link_up)
  {
  	struct ice_aqc_get_phy_caps_data *pcaps;
  	struct ice_aqc_set_phy_cfg_data *cfg;
  	struct ice_port_info *pi;
  	struct device *dev;
  	int retcode;
  
  	if (!vsi || !vsi->port_info || !vsi->back)
  		return -EINVAL;
  	if (vsi->type != ICE_VSI_PF)
  		return 0;
  
  	dev = ice_pf_to_dev(vsi->back);
  
  	pi = vsi->port_info;
  
  	pcaps = kzalloc(sizeof(*pcaps), GFP_KERNEL);
  	if (!pcaps)
  		return -ENOMEM;
  
  	retcode = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_SW_CFG, pcaps,
  				      NULL);
  	if (retcode) {
  		dev_err(dev, "Failed to get phy capabilities, VSI %d error %d\n",
  			vsi->vsi_num, retcode);
  		retcode = -EIO;
  		goto out;
  	}
  
  	/* No change in link */
  	if (link_up == !!(pcaps->caps & ICE_AQC_PHY_EN_LINK) &&
  	    link_up == !!(pi->phy.link_info.link_info & ICE_AQ_LINK_UP))
  		goto out;
  
  	/* Use the current user PHY configuration. The current user PHY
  	 * configuration is initialized during probe from PHY capabilities
  	 * software mode, and updated on set PHY configuration.
  	 */
  	cfg = kmemdup(&pi->phy.curr_user_phy_cfg, sizeof(*cfg), GFP_KERNEL);
  	if (!cfg) {
  		retcode = -ENOMEM;
  		goto out;
  	}
  
  	cfg->caps |= ICE_AQ_PHY_ENA_AUTO_LINK_UPDT;
  	if (link_up)
  		cfg->caps |= ICE_AQ_PHY_ENA_LINK;
  	else
  		cfg->caps &= ~ICE_AQ_PHY_ENA_LINK;
  
  	retcode = ice_aq_set_phy_cfg(&vsi->back->hw, pi, cfg, NULL);
  	if (retcode) {
  		dev_err(dev, "Failed to set phy config, VSI %d error %d\n",
  			vsi->vsi_num, retcode);
  		retcode = -EIO;
  	}
  
  	kfree(cfg);
  out:
  	kfree(pcaps);
  	return retcode;
  }
  
  /**
   * ice_init_nvm_phy_type - Initialize the NVM PHY type
   * @pi: port info structure
   *
   * Initialize nvm_phy_type_[low|high] for link lenient mode support
   */
  static int ice_init_nvm_phy_type(struct ice_port_info *pi)
  {
  	struct ice_aqc_get_phy_caps_data *pcaps;
  	struct ice_pf *pf = pi->hw->back;
  	enum ice_status status;
  	int err = 0;
  
  	pcaps = kzalloc(sizeof(*pcaps), GFP_KERNEL);
  	if (!pcaps)
  		return -ENOMEM;
  
  	status = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_NVM_CAP, pcaps,
  				     NULL);
  
  	if (status) {
  		dev_err(ice_pf_to_dev(pf), "Get PHY capability failed.\n");
  		err = -EIO;
  		goto out;
  	}
  
  	pf->nvm_phy_type_hi = pcaps->phy_type_high;
  	pf->nvm_phy_type_lo = pcaps->phy_type_low;
  
  out:
  	kfree(pcaps);
  	return err;
  }
  
  /**
   * ice_init_link_dflt_override - Initialize link default override
   * @pi: port info structure
   *
   * Initialize link default override and PHY total port shutdown during probe
   */
  static void ice_init_link_dflt_override(struct ice_port_info *pi)
  {
  	struct ice_link_default_override_tlv *ldo;
  	struct ice_pf *pf = pi->hw->back;
  
  	ldo = &pf->link_dflt_override;
  	if (ice_get_link_default_override(ldo, pi))
  		return;
  
  	if (!(ldo->options & ICE_LINK_OVERRIDE_PORT_DIS))
  		return;
  
  	/* Enable Total Port Shutdown (override/replace link-down-on-close
  	 * ethtool private flag) for ports with Port Disable bit set.
  	 */
  	set_bit(ICE_FLAG_TOTAL_PORT_SHUTDOWN_ENA, pf->flags);
  	set_bit(ICE_FLAG_LINK_DOWN_ON_CLOSE_ENA, pf->flags);
  }
  
  /**
   * ice_init_phy_cfg_dflt_override - Initialize PHY cfg default override settings
   * @pi: port info structure
   *
   * If default override is enabled, initialized the user PHY cfg speed and FEC
   * settings using the default override mask from the NVM.
   *
   * The PHY should only be configured with the default override settings the
   * first time media is available. The __ICE_LINK_DEFAULT_OVERRIDE_PENDING state
   * is used to indicate that the user PHY cfg default override is initialized
   * and the PHY has not been configured with the default override settings. The
   * state is set here, and cleared in ice_configure_phy the first time the PHY is
   * configured.
   */
  static void ice_init_phy_cfg_dflt_override(struct ice_port_info *pi)
  {
  	struct ice_link_default_override_tlv *ldo;
  	struct ice_aqc_set_phy_cfg_data *cfg;
  	struct ice_phy_info *phy = &pi->phy;
  	struct ice_pf *pf = pi->hw->back;
  
  	ldo = &pf->link_dflt_override;
  
  	/* If link default override is enabled, use to mask NVM PHY capabilities
  	 * for speed and FEC default configuration.
  	 */
  	cfg = &phy->curr_user_phy_cfg;
  
  	if (ldo->phy_type_low || ldo->phy_type_high) {
  		cfg->phy_type_low = pf->nvm_phy_type_lo &
  				    cpu_to_le64(ldo->phy_type_low);
  		cfg->phy_type_high = pf->nvm_phy_type_hi &
  				     cpu_to_le64(ldo->phy_type_high);
  	}
  	cfg->link_fec_opt = ldo->fec_options;
  	phy->curr_user_fec_req = ICE_FEC_AUTO;
  
  	set_bit(__ICE_LINK_DEFAULT_OVERRIDE_PENDING, pf->state);
  }
  
  /**
   * ice_init_phy_user_cfg - Initialize the PHY user configuration
   * @pi: port info structure
   *
   * Initialize the current user PHY configuration, speed, FEC, and FC requested
   * mode to default. The PHY defaults are from get PHY capabilities topology
   * with media so call when media is first available. An error is returned if
   * called when media is not available. The PHY initialization completed state is
   * set here.
   *
   * These configurations are used when setting PHY
   * configuration. The user PHY configuration is updated on set PHY
   * configuration. Returns 0 on success, negative on failure
   */
  static int ice_init_phy_user_cfg(struct ice_port_info *pi)
  {
  	struct ice_aqc_get_phy_caps_data *pcaps;
  	struct ice_phy_info *phy = &pi->phy;
  	struct ice_pf *pf = pi->hw->back;
  	enum ice_status status;
  	struct ice_vsi *vsi;
  	int err = 0;
  
  	if (!(phy->link_info.link_info & ICE_AQ_MEDIA_AVAILABLE))
  		return -EIO;
  
  	vsi = ice_get_main_vsi(pf);
  	if (!vsi)
  		return -EINVAL;
  
  	pcaps = kzalloc(sizeof(*pcaps), GFP_KERNEL);
  	if (!pcaps)
  		return -ENOMEM;
  
  	status = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_TOPO_CAP, pcaps,
  				     NULL);
  	if (status) {
  		dev_err(ice_pf_to_dev(pf), "Get PHY capability failed.\n");
  		err = -EIO;
  		goto err_out;
  	}
  
  	ice_copy_phy_caps_to_cfg(pi, pcaps, &pi->phy.curr_user_phy_cfg);
  
  	/* check if lenient mode is supported and enabled */
  	if (ice_fw_supports_link_override(&vsi->back->hw) &&
  	    !(pcaps->module_compliance_enforcement &
  	      ICE_AQC_MOD_ENFORCE_STRICT_MODE)) {
  		set_bit(ICE_FLAG_LINK_LENIENT_MODE_ENA, pf->flags);
  
  		/* if link default override is enabled, initialize user PHY
  		 * configuration with link default override values
  		 */
  		if (pf->link_dflt_override.options & ICE_LINK_OVERRIDE_EN) {
  			ice_init_phy_cfg_dflt_override(pi);
  			goto out;
  		}
  	}
  
  	/* if link default override is not enabled, initialize PHY using
  	 * topology with media
  	 */
  	phy->curr_user_fec_req = ice_caps_to_fec_mode(pcaps->caps,
  						      pcaps->link_fec_options);
  	phy->curr_user_fc_req = ice_caps_to_fc_mode(pcaps->caps);
  
  out:
  	phy->curr_user_speed_req = ICE_AQ_LINK_SPEED_M;
  	set_bit(__ICE_PHY_INIT_COMPLETE, pf->state);
  err_out:
  	kfree(pcaps);
  	return err;
  }
  
  /**
   * ice_configure_phy - configure PHY
   * @vsi: VSI of PHY
   *
   * Set the PHY configuration. If the current PHY configuration is the same as
   * the curr_user_phy_cfg, then do nothing to avoid link flap. Otherwise
   * configure the based get PHY capabilities for topology with media.
   */
  static int ice_configure_phy(struct ice_vsi *vsi)
  {
  	struct device *dev = ice_pf_to_dev(vsi->back);
  	struct ice_aqc_get_phy_caps_data *pcaps;
  	struct ice_aqc_set_phy_cfg_data *cfg;
  	struct ice_port_info *pi;
  	enum ice_status status;
  	int err = 0;
  
  	pi = vsi->port_info;
  	if (!pi)
  		return -EINVAL;
  
  	/* Ensure we have media as we cannot configure a medialess port */
  	if (!(pi->phy.link_info.link_info & ICE_AQ_MEDIA_AVAILABLE))
  		return -EPERM;
  
  	ice_print_topo_conflict(vsi);
  
  	if (vsi->port_info->phy.link_info.topo_media_conflict ==
  	    ICE_AQ_LINK_TOPO_UNSUPP_MEDIA)
  		return -EPERM;
  
  	if (test_bit(ICE_FLAG_LINK_DOWN_ON_CLOSE_ENA, vsi->back->flags))
  		return ice_force_phys_link_state(vsi, true);
  
  	pcaps = kzalloc(sizeof(*pcaps), GFP_KERNEL);
  	if (!pcaps)
  		return -ENOMEM;
  
  	/* Get current PHY config */
  	status = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_SW_CFG, pcaps,
  				     NULL);
  	if (status) {
  		dev_err(dev, "Failed to get PHY configuration, VSI %d error %s\n",
  			vsi->vsi_num, ice_stat_str(status));
  		err = -EIO;
  		goto done;
  	}
  
  	/* If PHY enable link is configured and configuration has not changed,
  	 * there's nothing to do
  	 */
  	if (pcaps->caps & ICE_AQC_PHY_EN_LINK &&
  	    ice_phy_caps_equals_cfg(pcaps, &pi->phy.curr_user_phy_cfg))
  		goto done;
  
  	/* Use PHY topology as baseline for configuration */
  	memset(pcaps, 0, sizeof(*pcaps));
  	status = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_TOPO_CAP, pcaps,
  				     NULL);
  	if (status) {
  		dev_err(dev, "Failed to get PHY topology, VSI %d error %s\n",
  			vsi->vsi_num, ice_stat_str(status));
  		err = -EIO;
  		goto done;
  	}
  
  	cfg = kzalloc(sizeof(*cfg), GFP_KERNEL);
  	if (!cfg) {
  		err = -ENOMEM;
  		goto done;
  	}
  
  	ice_copy_phy_caps_to_cfg(pi, pcaps, cfg);
  
  	/* Speed - If default override pending, use curr_user_phy_cfg set in
  	 * ice_init_phy_user_cfg_ldo.
  	 */
  	if (test_and_clear_bit(__ICE_LINK_DEFAULT_OVERRIDE_PENDING,
  			       vsi->back->state)) {
  		cfg->phy_type_low = pi->phy.curr_user_phy_cfg.phy_type_low;
  		cfg->phy_type_high = pi->phy.curr_user_phy_cfg.phy_type_high;
  	} else {
  		u64 phy_low = 0, phy_high = 0;
  
  		ice_update_phy_type(&phy_low, &phy_high,
  				    pi->phy.curr_user_speed_req);
  		cfg->phy_type_low = pcaps->phy_type_low & cpu_to_le64(phy_low);
  		cfg->phy_type_high = pcaps->phy_type_high &
  				     cpu_to_le64(phy_high);
  	}
  
  	/* Can't provide what was requested; use PHY capabilities */
  	if (!cfg->phy_type_low && !cfg->phy_type_high) {
  		cfg->phy_type_low = pcaps->phy_type_low;
  		cfg->phy_type_high = pcaps->phy_type_high;
  	}
  
  	/* FEC */
  	ice_cfg_phy_fec(pi, cfg, pi->phy.curr_user_fec_req);
  
  	/* Can't provide what was requested; use PHY capabilities */
  	if (cfg->link_fec_opt !=
  	    (cfg->link_fec_opt & pcaps->link_fec_options)) {
  		cfg->caps |= pcaps->caps & ICE_AQC_PHY_EN_AUTO_FEC;
  		cfg->link_fec_opt = pcaps->link_fec_options;
  	}
  
  	/* Flow Control - always supported; no need to check against
  	 * capabilities
  	 */
  	ice_cfg_phy_fc(pi, cfg, pi->phy.curr_user_fc_req);
  
  	/* Enable link and link update */
  	cfg->caps |= ICE_AQ_PHY_ENA_AUTO_LINK_UPDT | ICE_AQ_PHY_ENA_LINK;
  
  	status = ice_aq_set_phy_cfg(&vsi->back->hw, pi, cfg, NULL);
  	if (status) {
  		dev_err(dev, "Failed to set phy config, VSI %d error %s\n",
  			vsi->vsi_num, ice_stat_str(status));
  		err = -EIO;
  	}
  
  	kfree(cfg);
  done:
  	kfree(pcaps);
  	return err;
  }
  
  /**
   * ice_check_media_subtask - Check for media
   * @pf: pointer to PF struct
   *
   * If media is available, then initialize PHY user configuration if it is not
   * been, and configure the PHY if the interface is up.
   */
  static void ice_check_media_subtask(struct ice_pf *pf)
  {
  	struct ice_port_info *pi;
  	struct ice_vsi *vsi;
  	int err;
  
  	/* No need to check for media if it's already present */
  	if (!test_bit(ICE_FLAG_NO_MEDIA, pf->flags))
  		return;
  
  	vsi = ice_get_main_vsi(pf);
  	if (!vsi)
  		return;
  
  	/* Refresh link info and check if media is present */
  	pi = vsi->port_info;
  	err = ice_update_link_info(pi);
  	if (err)
  		return;
  
  	if (pi->phy.link_info.link_info & ICE_AQ_MEDIA_AVAILABLE) {
  		if (!test_bit(__ICE_PHY_INIT_COMPLETE, pf->state))
  			ice_init_phy_user_cfg(pi);
  
  		/* PHY settings are reset on media insertion, reconfigure
  		 * PHY to preserve settings.
  		 */
  		if (test_bit(__ICE_DOWN, vsi->state) &&
  		    test_bit(ICE_FLAG_LINK_DOWN_ON_CLOSE_ENA, vsi->back->flags))
  			return;
  
  		err = ice_configure_phy(vsi);
  		if (!err)
  			clear_bit(ICE_FLAG_NO_MEDIA, pf->flags);
  
  		/* A Link Status Event will be generated; the event handler
  		 * will complete bringing the interface up
  		 */
  	}
  }
  
  /**
   * ice_service_task - manage and run subtasks
   * @work: pointer to work_struct contained by the PF struct
   */
  static void ice_service_task(struct work_struct *work)
  {
  	struct ice_pf *pf = container_of(work, struct ice_pf, serv_task);
  	unsigned long start_time = jiffies;
  
  	/* subtasks */
  
  	/* process reset requests first */
  	ice_reset_subtask(pf);
  
  	/* bail if a reset/recovery cycle is pending or rebuild failed */
  	if (ice_is_reset_in_progress(pf->state) ||
  	    test_bit(__ICE_SUSPENDED, pf->state) ||
  	    test_bit(__ICE_NEEDS_RESTART, pf->state)) {
  		ice_service_task_complete(pf);
  		return;
  	}
  
  	ice_clean_adminq_subtask(pf);
  	ice_check_media_subtask(pf);
  	ice_check_for_hang_subtask(pf);
  	ice_sync_fltr_subtask(pf);
  	ice_handle_mdd_event(pf);
  	ice_watchdog_subtask(pf);
  
  	if (ice_is_safe_mode(pf)) {
  		ice_service_task_complete(pf);
  		return;
  	}
  
  	ice_process_vflr_event(pf);
  	ice_clean_mailboxq_subtask(pf);
  	ice_sync_arfs_fltrs(pf);
  	/* Clear __ICE_SERVICE_SCHED flag to allow scheduling next event */
  	ice_service_task_complete(pf);
  
  	/* If the tasks have taken longer than one service timer period
  	 * or there is more work to be done, reset the service timer to
  	 * schedule the service task now.
  	 */
  	if (time_after(jiffies, (start_time + pf->serv_tmr_period)) ||
  	    test_bit(__ICE_MDD_EVENT_PENDING, pf->state) ||
  	    test_bit(__ICE_VFLR_EVENT_PENDING, pf->state) ||
  	    test_bit(__ICE_MAILBOXQ_EVENT_PENDING, pf->state) ||
  	    test_bit(__ICE_ADMINQ_EVENT_PENDING, pf->state))
  		mod_timer(&pf->serv_tmr, jiffies);
  }
  
  /**
   * ice_set_ctrlq_len - helper function to set controlq length
   * @hw: pointer to the HW instance
   */
  static void ice_set_ctrlq_len(struct ice_hw *hw)
  {
  	hw->adminq.num_rq_entries = ICE_AQ_LEN;
  	hw->adminq.num_sq_entries = ICE_AQ_LEN;
  	hw->adminq.rq_buf_size = ICE_AQ_MAX_BUF_LEN;
  	hw->adminq.sq_buf_size = ICE_AQ_MAX_BUF_LEN;
  	hw->mailboxq.num_rq_entries = PF_MBX_ARQLEN_ARQLEN_M;
  	hw->mailboxq.num_sq_entries = ICE_MBXSQ_LEN;
  	hw->mailboxq.rq_buf_size = ICE_MBXQ_MAX_BUF_LEN;
  	hw->mailboxq.sq_buf_size = ICE_MBXQ_MAX_BUF_LEN;
  }
  
  /**
   * ice_schedule_reset - schedule a reset
   * @pf: board private structure
   * @reset: reset being requested
   */
  int ice_schedule_reset(struct ice_pf *pf, enum ice_reset_req reset)
  {
  	struct device *dev = ice_pf_to_dev(pf);
  
  	/* bail out if earlier reset has failed */
  	if (test_bit(__ICE_RESET_FAILED, pf->state)) {
  		dev_dbg(dev, "earlier reset has failed\n");
  		return -EIO;
  	}
  	/* bail if reset/recovery already in progress */
  	if (ice_is_reset_in_progress(pf->state)) {
  		dev_dbg(dev, "Reset already in progress\n");
  		return -EBUSY;
  	}
  
  	switch (reset) {
  	case ICE_RESET_PFR:
  		set_bit(__ICE_PFR_REQ, pf->state);
  		break;
  	case ICE_RESET_CORER:
  		set_bit(__ICE_CORER_REQ, pf->state);
  		break;
  	case ICE_RESET_GLOBR:
  		set_bit(__ICE_GLOBR_REQ, pf->state);
  		break;
  	default:
  		return -EINVAL;
  	}
  
  	ice_service_task_schedule(pf);
  	return 0;
  }
  
  /**
   * ice_irq_affinity_notify - Callback for affinity changes
   * @notify: context as to what irq was changed
   * @mask: the new affinity mask
   *
   * This is a callback function used by the irq_set_affinity_notifier function
   * so that we may register to receive changes to the irq affinity masks.
   */
  static void
  ice_irq_affinity_notify(struct irq_affinity_notify *notify,
  			const cpumask_t *mask)
  {
  	struct ice_q_vector *q_vector =
  		container_of(notify, struct ice_q_vector, affinity_notify);
  
  	cpumask_copy(&q_vector->affinity_mask, mask);
  }
  
  /**
   * ice_irq_affinity_release - Callback for affinity notifier release
   * @ref: internal core kernel usage
   *
   * This is a callback function used by the irq_set_affinity_notifier function
   * to inform the current notification subscriber that they will no longer
   * receive notifications.
   */
  static void ice_irq_affinity_release(struct kref __always_unused *ref) {}
  
  /**
   * ice_vsi_ena_irq - Enable IRQ for the given VSI
   * @vsi: the VSI being configured
   */
  static int ice_vsi_ena_irq(struct ice_vsi *vsi)
  {
  	struct ice_hw *hw = &vsi->back->hw;
  	int i;
  
  	ice_for_each_q_vector(vsi, i)
  		ice_irq_dynamic_ena(hw, vsi, vsi->q_vectors[i]);
  
  	ice_flush(hw);
  	return 0;
  }
  
  /**
   * ice_vsi_req_irq_msix - get MSI-X vectors from the OS for the VSI
   * @vsi: the VSI being configured
   * @basename: name for the vector
   */
  static int ice_vsi_req_irq_msix(struct ice_vsi *vsi, char *basename)
  {
  	int q_vectors = vsi->num_q_vectors;
  	struct ice_pf *pf = vsi->back;
  	int base = vsi->base_vector;
  	struct device *dev;
  	int rx_int_idx = 0;
  	int tx_int_idx = 0;
  	int vector, err;
  	int irq_num;
  
  	dev = ice_pf_to_dev(pf);
  	for (vector = 0; vector < q_vectors; vector++) {
  		struct ice_q_vector *q_vector = vsi->q_vectors[vector];
  
  		irq_num = pf->msix_entries[base + vector].vector;
  
  		if (q_vector->tx.ring && q_vector->rx.ring) {
  			snprintf(q_vector->name, sizeof(q_vector->name) - 1,
  				 "%s-%s-%d", basename, "TxRx", rx_int_idx++);
  			tx_int_idx++;
  		} else if (q_vector->rx.ring) {
  			snprintf(q_vector->name, sizeof(q_vector->name) - 1,
  				 "%s-%s-%d", basename, "rx", rx_int_idx++);
  		} else if (q_vector->tx.ring) {
  			snprintf(q_vector->name, sizeof(q_vector->name) - 1,
  				 "%s-%s-%d", basename, "tx", tx_int_idx++);
  		} else {
  			/* skip this unused q_vector */
  			continue;
  		}
  		err = devm_request_irq(dev, irq_num, vsi->irq_handler, 0,
  				       q_vector->name, q_vector);
  		if (err) {
  			netdev_err(vsi->netdev, "MSIX request_irq failed, error: %d\n",
  				   err);
  			goto free_q_irqs;
  		}
  
  		/* register for affinity change notifications */
  		if (!IS_ENABLED(CONFIG_RFS_ACCEL)) {
  			struct irq_affinity_notify *affinity_notify;
  
  			affinity_notify = &q_vector->affinity_notify;
  			affinity_notify->notify = ice_irq_affinity_notify;
  			affinity_notify->release = ice_irq_affinity_release;
  			irq_set_affinity_notifier(irq_num, affinity_notify);
  		}
  
  		/* assign the mask for this irq */
  		irq_set_affinity_hint(irq_num, &q_vector->affinity_mask);
  	}
  
  	vsi->irqs_ready = true;
  	return 0;
  
  free_q_irqs:
  	while (vector) {
  		vector--;
  		irq_num = pf->msix_entries[base + vector].vector;
  		if (!IS_ENABLED(CONFIG_RFS_ACCEL))
  			irq_set_affinity_notifier(irq_num, NULL);
  		irq_set_affinity_hint(irq_num, NULL);
  		devm_free_irq(dev, irq_num, &vsi->q_vectors[vector]);
  	}
  	return err;
  }
  
  /**
   * ice_xdp_alloc_setup_rings - Allocate and setup Tx rings for XDP
   * @vsi: VSI to setup Tx rings used by XDP
   *
   * Return 0 on success and negative value on error
   */
  static int ice_xdp_alloc_setup_rings(struct ice_vsi *vsi)
  {
  	struct device *dev = ice_pf_to_dev(vsi->back);
  	int i;
  
  	for (i = 0; i < vsi->num_xdp_txq; i++) {
  		u16 xdp_q_idx = vsi->alloc_txq + i;
  		struct ice_ring *xdp_ring;
  
  		xdp_ring = kzalloc(sizeof(*xdp_ring), GFP_KERNEL);
  
  		if (!xdp_ring)
  			goto free_xdp_rings;
  
  		xdp_ring->q_index = xdp_q_idx;
  		xdp_ring->reg_idx = vsi->txq_map[xdp_q_idx];
  		xdp_ring->ring_active = false;
  		xdp_ring->vsi = vsi;
  		xdp_ring->netdev = NULL;
  		xdp_ring->dev = dev;
  		xdp_ring->count = vsi->num_tx_desc;
  		WRITE_ONCE(vsi->xdp_rings[i], xdp_ring);
  		if (ice_setup_tx_ring(xdp_ring))
  			goto free_xdp_rings;
  		ice_set_ring_xdp(xdp_ring);
  		xdp_ring->xsk_pool = ice_xsk_pool(xdp_ring);
  	}
  
  	return 0;
  
  free_xdp_rings:
  	for (; i >= 0; i--)
  		if (vsi->xdp_rings[i] && vsi->xdp_rings[i]->desc)
  			ice_free_tx_ring(vsi->xdp_rings[i]);
  	return -ENOMEM;
  }
  
  /**
   * ice_vsi_assign_bpf_prog - set or clear bpf prog pointer on VSI
   * @vsi: VSI to set the bpf prog on
   * @prog: the bpf prog pointer
   */
  static void ice_vsi_assign_bpf_prog(struct ice_vsi *vsi, struct bpf_prog *prog)
  {
  	struct bpf_prog *old_prog;
  	int i;
  
  	old_prog = xchg(&vsi->xdp_prog, prog);
  	if (old_prog)
  		bpf_prog_put(old_prog);
  
  	ice_for_each_rxq(vsi, i)
  		WRITE_ONCE(vsi->rx_rings[i]->xdp_prog, vsi->xdp_prog);
  }
  
  /**
   * ice_prepare_xdp_rings - Allocate, configure and setup Tx rings for XDP
   * @vsi: VSI to bring up Tx rings used by XDP
   * @prog: bpf program that will be assigned to VSI
   *
   * Return 0 on success and negative value on error
   */
  int ice_prepare_xdp_rings(struct ice_vsi *vsi, struct bpf_prog *prog)
  {
  	u16 max_txqs[ICE_MAX_TRAFFIC_CLASS] = { 0 };
  	int xdp_rings_rem = vsi->num_xdp_txq;
  	struct ice_pf *pf = vsi->back;
  	struct ice_qs_cfg xdp_qs_cfg = {
  		.qs_mutex = &pf->avail_q_mutex,
  		.pf_map = pf->avail_txqs,
  		.pf_map_size = pf->max_pf_txqs,
  		.q_count = vsi->num_xdp_txq,
  		.scatter_count = ICE_MAX_SCATTER_TXQS,
  		.vsi_map = vsi->txq_map,
  		.vsi_map_offset = vsi->alloc_txq,
  		.mapping_mode = ICE_VSI_MAP_CONTIG
  	};
  	enum ice_status status;
  	struct device *dev;
  	int i, v_idx;
  
  	dev = ice_pf_to_dev(pf);
  	vsi->xdp_rings = devm_kcalloc(dev, vsi->num_xdp_txq,
  				      sizeof(*vsi->xdp_rings), GFP_KERNEL);
  	if (!vsi->xdp_rings)
  		return -ENOMEM;
  
  	vsi->xdp_mapping_mode = xdp_qs_cfg.mapping_mode;
  	if (__ice_vsi_get_qs(&xdp_qs_cfg))
  		goto err_map_xdp;
  
  	if (ice_xdp_alloc_setup_rings(vsi))
  		goto clear_xdp_rings;
  
  	/* follow the logic from ice_vsi_map_rings_to_vectors */
  	ice_for_each_q_vector(vsi, v_idx) {
  		struct ice_q_vector *q_vector = vsi->q_vectors[v_idx];
  		int xdp_rings_per_v, q_id, q_base;
  
  		xdp_rings_per_v = DIV_ROUND_UP(xdp_rings_rem,
  					       vsi->num_q_vectors - v_idx);
  		q_base = vsi->num_xdp_txq - xdp_rings_rem;
  
  		for (q_id = q_base; q_id < (q_base + xdp_rings_per_v); q_id++) {
  			struct ice_ring *xdp_ring = vsi->xdp_rings[q_id];
  
  			xdp_ring->q_vector = q_vector;
  			xdp_ring->next = q_vector->tx.ring;
  			q_vector->tx.ring = xdp_ring;
  		}
  		xdp_rings_rem -= xdp_rings_per_v;
  	}
  
  	/* omit the scheduler update if in reset path; XDP queues will be
  	 * taken into account at the end of ice_vsi_rebuild, where
  	 * ice_cfg_vsi_lan is being called
  	 */
  	if (ice_is_reset_in_progress(pf->state))
  		return 0;
  
  	/* tell the Tx scheduler that right now we have
  	 * additional queues
  	 */
  	for (i = 0; i < vsi->tc_cfg.numtc; i++)
  		max_txqs[i] = vsi->num_txq + vsi->num_xdp_txq;
  
  	status = ice_cfg_vsi_lan(vsi->port_info, vsi->idx, vsi->tc_cfg.ena_tc,
  				 max_txqs);
  	if (status) {
  		dev_err(dev, "Failed VSI LAN queue config for XDP, error: %s\n",
  			ice_stat_str(status));
  		goto clear_xdp_rings;
  	}
  	ice_vsi_assign_bpf_prog(vsi, prog);
  
  	return 0;
  clear_xdp_rings:
  	for (i = 0; i < vsi->num_xdp_txq; i++)
  		if (vsi->xdp_rings[i]) {
  			kfree_rcu(vsi->xdp_rings[i], rcu);
  			vsi->xdp_rings[i] = NULL;
  		}
  
  err_map_xdp:
  	mutex_lock(&pf->avail_q_mutex);
  	for (i = 0; i < vsi->num_xdp_txq; i++) {
  		clear_bit(vsi->txq_map[i + vsi->alloc_txq], pf->avail_txqs);
  		vsi->txq_map[i + vsi->alloc_txq] = ICE_INVAL_Q_INDEX;
  	}
  	mutex_unlock(&pf->avail_q_mutex);
  
  	devm_kfree(dev, vsi->xdp_rings);
  	return -ENOMEM;
  }
  
  /**
   * ice_destroy_xdp_rings - undo the configuration made by ice_prepare_xdp_rings
   * @vsi: VSI to remove XDP rings
   *
   * Detach XDP rings from irq vectors, clean up the PF bitmap and free
   * resources
   */
  int ice_destroy_xdp_rings(struct ice_vsi *vsi)
  {
  	u16 max_txqs[ICE_MAX_TRAFFIC_CLASS] = { 0 };
  	struct ice_pf *pf = vsi->back;
  	int i, v_idx;
  
  	/* q_vectors are freed in reset path so there's no point in detaching
  	 * rings; in case of rebuild being triggered not from reset bits
  	 * in pf->state won't be set, so additionally check first q_vector
  	 * against NULL
  	 */
  	if (ice_is_reset_in_progress(pf->state) || !vsi->q_vectors[0])
  		goto free_qmap;
  
  	ice_for_each_q_vector(vsi, v_idx) {
  		struct ice_q_vector *q_vector = vsi->q_vectors[v_idx];
  		struct ice_ring *ring;
  
  		ice_for_each_ring(ring, q_vector->tx)
  			if (!ring->tx_buf || !ice_ring_is_xdp(ring))
  				break;
  
  		/* restore the value of last node prior to XDP setup */
  		q_vector->tx.ring = ring;
  	}
  
  free_qmap:
  	mutex_lock(&pf->avail_q_mutex);
  	for (i = 0; i < vsi->num_xdp_txq; i++) {
  		clear_bit(vsi->txq_map[i + vsi->alloc_txq], pf->avail_txqs);
  		vsi->txq_map[i + vsi->alloc_txq] = ICE_INVAL_Q_INDEX;
  	}
  	mutex_unlock(&pf->avail_q_mutex);
  
  	for (i = 0; i < vsi->num_xdp_txq; i++)
  		if (vsi->xdp_rings[i]) {
  			if (vsi->xdp_rings[i]->desc)
  				ice_free_tx_ring(vsi->xdp_rings[i]);
  			kfree_rcu(vsi->xdp_rings[i], rcu);
  			vsi->xdp_rings[i] = NULL;
  		}
  
  	devm_kfree(ice_pf_to_dev(pf), vsi->xdp_rings);
  	vsi->xdp_rings = NULL;
  
  	if (ice_is_reset_in_progress(pf->state) || !vsi->q_vectors[0])
  		return 0;
  
  	ice_vsi_assign_bpf_prog(vsi, NULL);
  
  	/* notify Tx scheduler that we destroyed XDP queues and bring
  	 * back the old number of child nodes
  	 */
  	for (i = 0; i < vsi->tc_cfg.numtc; i++)
  		max_txqs[i] = vsi->num_txq;
  
  	/* change number of XDP Tx queues to 0 */
  	vsi->num_xdp_txq = 0;
  
  	return ice_cfg_vsi_lan(vsi->port_info, vsi->idx, vsi->tc_cfg.ena_tc,
  			       max_txqs);
  }
  
  /**
   * ice_xdp_setup_prog - Add or remove XDP eBPF program
   * @vsi: VSI to setup XDP for
   * @prog: XDP program
   * @extack: netlink extended ack
   */
  static int
  ice_xdp_setup_prog(struct ice_vsi *vsi, struct bpf_prog *prog,
  		   struct netlink_ext_ack *extack)
  {
  	int frame_size = vsi->netdev->mtu + ICE_ETH_PKT_HDR_PAD;
  	bool if_running = netif_running(vsi->netdev);
  	int ret = 0, xdp_ring_err = 0;
  
  	if (frame_size > vsi->rx_buf_len) {
  		NL_SET_ERR_MSG_MOD(extack, "MTU too large for loading XDP");
  		return -EOPNOTSUPP;
  	}
  
  	/* need to stop netdev while setting up the program for Rx rings */
  	if (if_running && !test_and_set_bit(__ICE_DOWN, vsi->state)) {
  		ret = ice_down(vsi);
  		if (ret) {
  			NL_SET_ERR_MSG_MOD(extack, "Preparing device for XDP attach failed");
  			return ret;
  		}
  	}
  
  	if (!ice_is_xdp_ena_vsi(vsi) && prog) {
  		vsi->num_xdp_txq = vsi->alloc_rxq;
  		xdp_ring_err = ice_prepare_xdp_rings(vsi, prog);
  		if (xdp_ring_err)
  			NL_SET_ERR_MSG_MOD(extack, "Setting up XDP Tx resources failed");
  	} else if (ice_is_xdp_ena_vsi(vsi) && !prog) {
  		xdp_ring_err = ice_destroy_xdp_rings(vsi);
  		if (xdp_ring_err)
  			NL_SET_ERR_MSG_MOD(extack, "Freeing XDP Tx resources failed");
  	} else {
  		ice_vsi_assign_bpf_prog(vsi, prog);
  	}
  
  	if (if_running)
  		ret = ice_up(vsi);
  
  	if (!ret && prog && vsi->xsk_pools) {
  		int i;
  
  		ice_for_each_rxq(vsi, i) {
  			struct ice_ring *rx_ring = vsi->rx_rings[i];
  
  			if (rx_ring->xsk_pool)
  				napi_schedule(&rx_ring->q_vector->napi);
  		}
  	}
  
  	return (ret || xdp_ring_err) ? -ENOMEM : 0;
  }
  
  /**
   * ice_xdp_safe_mode - XDP handler for safe mode
   * @dev: netdevice
   * @xdp: XDP command
   */
  static int ice_xdp_safe_mode(struct net_device __always_unused *dev,
  			     struct netdev_bpf *xdp)
  {
  	NL_SET_ERR_MSG_MOD(xdp->extack,
  			   "Please provide working DDP firmware package in order to use XDP\n"
  			   "Refer to Documentation/networking/device_drivers/ethernet/intel/ice.rst");
  	return -EOPNOTSUPP;
  }
  
  /**
   * ice_xdp - implements XDP handler
   * @dev: netdevice
   * @xdp: XDP command
   */
  static int ice_xdp(struct net_device *dev, struct netdev_bpf *xdp)
  {
  	struct ice_netdev_priv *np = netdev_priv(dev);
  	struct ice_vsi *vsi = np->vsi;
  
  	if (vsi->type != ICE_VSI_PF) {
  		NL_SET_ERR_MSG_MOD(xdp->extack, "XDP can be loaded only on PF VSI");
  		return -EINVAL;
  	}
  
  	switch (xdp->command) {
  	case XDP_SETUP_PROG:
  		return ice_xdp_setup_prog(vsi, xdp->prog, xdp->extack);
  	case XDP_SETUP_XSK_POOL:
  		return ice_xsk_pool_setup(vsi, xdp->xsk.pool,
  					  xdp->xsk.queue_id);
  	default:
  		return -EINVAL;
  	}
  }
  
  /**
   * ice_ena_misc_vector - enable the non-queue interrupts
   * @pf: board private structure
   */
  static void ice_ena_misc_vector(struct ice_pf *pf)
  {
  	struct ice_hw *hw = &pf->hw;
  	u32 val;
  
  	/* Disable anti-spoof detection interrupt to prevent spurious event
  	 * interrupts during a function reset. Anti-spoof functionally is
  	 * still supported.
  	 */
  	val = rd32(hw, GL_MDCK_TX_TDPU);
  	val |= GL_MDCK_TX_TDPU_RCU_ANTISPOOF_ITR_DIS_M;
  	wr32(hw, GL_MDCK_TX_TDPU, val);
  
  	/* clear things first */
  	wr32(hw, PFINT_OICR_ENA, 0);	/* disable all */
  	rd32(hw, PFINT_OICR);		/* read to clear */
  
  	val = (PFINT_OICR_ECC_ERR_M |
  	       PFINT_OICR_MAL_DETECT_M |
  	       PFINT_OICR_GRST_M |
  	       PFINT_OICR_PCI_EXCEPTION_M |
  	       PFINT_OICR_VFLR_M |
  	       PFINT_OICR_HMC_ERR_M |
  	       PFINT_OICR_PE_CRITERR_M);
  
  	wr32(hw, PFINT_OICR_ENA, val);
  
  	/* SW_ITR_IDX = 0, but don't change INTENA */
  	wr32(hw, GLINT_DYN_CTL(pf->oicr_idx),
  	     GLINT_DYN_CTL_SW_ITR_INDX_M | GLINT_DYN_CTL_INTENA_MSK_M);
  }
  
  /**
   * ice_misc_intr - misc interrupt handler
   * @irq: interrupt number
   * @data: pointer to a q_vector
   */
  static irqreturn_t ice_misc_intr(int __always_unused irq, void *data)
  {
  	struct ice_pf *pf = (struct ice_pf *)data;
  	struct ice_hw *hw = &pf->hw;
  	irqreturn_t ret = IRQ_NONE;
  	struct device *dev;
  	u32 oicr, ena_mask;
  
  	dev = ice_pf_to_dev(pf);
  	set_bit(__ICE_ADMINQ_EVENT_PENDING, pf->state);
  	set_bit(__ICE_MAILBOXQ_EVENT_PENDING, pf->state);
  
  	oicr = rd32(hw, PFINT_OICR);
  	ena_mask = rd32(hw, PFINT_OICR_ENA);
  
  	if (oicr & PFINT_OICR_SWINT_M) {
  		ena_mask &= ~PFINT_OICR_SWINT_M;
  		pf->sw_int_count++;
  	}
  
  	if (oicr & PFINT_OICR_MAL_DETECT_M) {
  		ena_mask &= ~PFINT_OICR_MAL_DETECT_M;
  		set_bit(__ICE_MDD_EVENT_PENDING, pf->state);
  	}
  	if (oicr & PFINT_OICR_VFLR_M) {
  		/* disable any further VFLR event notifications */
  		if (test_bit(__ICE_VF_RESETS_DISABLED, pf->state)) {
  			u32 reg = rd32(hw, PFINT_OICR_ENA);
  
  			reg &= ~PFINT_OICR_VFLR_M;
  			wr32(hw, PFINT_OICR_ENA, reg);
  		} else {
  			ena_mask &= ~PFINT_OICR_VFLR_M;
  			set_bit(__ICE_VFLR_EVENT_PENDING, pf->state);
  		}
  	}
  
  	if (oicr & PFINT_OICR_GRST_M) {
  		u32 reset;
  
  		/* we have a reset warning */
  		ena_mask &= ~PFINT_OICR_GRST_M;
  		reset = (rd32(hw, GLGEN_RSTAT) & GLGEN_RSTAT_RESET_TYPE_M) >>
  			GLGEN_RSTAT_RESET_TYPE_S;
  
  		if (reset == ICE_RESET_CORER)
  			pf->corer_count++;
  		else if (reset == ICE_RESET_GLOBR)
  			pf->globr_count++;
  		else if (reset == ICE_RESET_EMPR)
  			pf->empr_count++;
  		else
  			dev_dbg(dev, "Invalid reset type %d\n", reset);
  
  		/* If a reset cycle isn't already in progress, we set a bit in
  		 * pf->state so that the service task can start a reset/rebuild.
  		 * We also make note of which reset happened so that peer
  		 * devices/drivers can be informed.
  		 */
  		if (!test_and_set_bit(__ICE_RESET_OICR_RECV, pf->state)) {
  			if (reset == ICE_RESET_CORER)
  				set_bit(__ICE_CORER_RECV, pf->state);
  			else if (reset == ICE_RESET_GLOBR)
  				set_bit(__ICE_GLOBR_RECV, pf->state);
  			else
  				set_bit(__ICE_EMPR_RECV, pf->state);
  
  			/* There are couple of different bits at play here.
  			 * hw->reset_ongoing indicates whether the hardware is
  			 * in reset. This is set to true when a reset interrupt
  			 * is received and set back to false after the driver
  			 * has determined that the hardware is out of reset.
  			 *
  			 * __ICE_RESET_OICR_RECV in pf->state indicates
  			 * that a post reset rebuild is required before the
  			 * driver is operational again. This is set above.
  			 *
  			 * As this is the start of the reset/rebuild cycle, set
  			 * both to indicate that.
  			 */
  			hw->reset_ongoing = true;
  		}
  	}
  
  	if (oicr & PFINT_OICR_HMC_ERR_M) {
  		ena_mask &= ~PFINT_OICR_HMC_ERR_M;
  		dev_dbg(dev, "HMC Error interrupt - info 0x%x, data 0x%x\n",
  			rd32(hw, PFHMC_ERRORINFO),
  			rd32(hw, PFHMC_ERRORDATA));
  	}
  
  	/* Report any remaining unexpected interrupts */
  	oicr &= ena_mask;
  	if (oicr) {
  		dev_dbg(dev, "unhandled interrupt oicr=0x%08x\n", oicr);
  		/* If a critical error is pending there is no choice but to
  		 * reset the device.
  		 */
  		if (oicr & (PFINT_OICR_PE_CRITERR_M |
  			    PFINT_OICR_PCI_EXCEPTION_M |
  			    PFINT_OICR_ECC_ERR_M)) {
  			set_bit(__ICE_PFR_REQ, pf->state);
  			ice_service_task_schedule(pf);
  		}
  	}
  	ret = IRQ_HANDLED;
  
  	ice_service_task_schedule(pf);
  	ice_irq_dynamic_ena(hw, NULL, NULL);
  
  	return ret;
  }
  
  /**
   * ice_dis_ctrlq_interrupts - disable control queue interrupts
   * @hw: pointer to HW structure
   */
  static void ice_dis_ctrlq_interrupts(struct ice_hw *hw)
  {
  	/* disable Admin queue Interrupt causes */
  	wr32(hw, PFINT_FW_CTL,
  	     rd32(hw, PFINT_FW_CTL) & ~PFINT_FW_CTL_CAUSE_ENA_M);
  
  	/* disable Mailbox queue Interrupt causes */
  	wr32(hw, PFINT_MBX_CTL,
  	     rd32(hw, PFINT_MBX_CTL) & ~PFINT_MBX_CTL_CAUSE_ENA_M);
  
  	/* disable Control queue Interrupt causes */
  	wr32(hw, PFINT_OICR_CTL,
  	     rd32(hw, PFINT_OICR_CTL) & ~PFINT_OICR_CTL_CAUSE_ENA_M);
  
  	ice_flush(hw);
  }
  
  /**
   * ice_free_irq_msix_misc - Unroll misc vector setup
   * @pf: board private structure
   */
  static void ice_free_irq_msix_misc(struct ice_pf *pf)
  {
  	struct ice_hw *hw = &pf->hw;
  
  	ice_dis_ctrlq_interrupts(hw);
  
  	/* disable OICR interrupt */
  	wr32(hw, PFINT_OICR_ENA, 0);
  	ice_flush(hw);
  
  	if (pf->msix_entries) {
  		synchronize_irq(pf->msix_entries[pf->oicr_idx].vector);
  		devm_free_irq(ice_pf_to_dev(pf),
  			      pf->msix_entries[pf->oicr_idx].vector, pf);
  	}
  
  	pf->num_avail_sw_msix += 1;
  	ice_free_res(pf->irq_tracker, pf->oicr_idx, ICE_RES_MISC_VEC_ID);
  }
  
  /**
   * ice_ena_ctrlq_interrupts - enable control queue interrupts
   * @hw: pointer to HW structure
   * @reg_idx: HW vector index to associate the control queue interrupts with
   */
  static void ice_ena_ctrlq_interrupts(struct ice_hw *hw, u16 reg_idx)
  {
  	u32 val;
  
  	val = ((reg_idx & PFINT_OICR_CTL_MSIX_INDX_M) |
  	       PFINT_OICR_CTL_CAUSE_ENA_M);
  	wr32(hw, PFINT_OICR_CTL, val);
  
  	/* enable Admin queue Interrupt causes */
  	val = ((reg_idx & PFINT_FW_CTL_MSIX_INDX_M) |
  	       PFINT_FW_CTL_CAUSE_ENA_M);
  	wr32(hw, PFINT_FW_CTL, val);
  
  	/* enable Mailbox queue Interrupt causes */
  	val = ((reg_idx & PFINT_MBX_CTL_MSIX_INDX_M) |
  	       PFINT_MBX_CTL_CAUSE_ENA_M);
  	wr32(hw, PFINT_MBX_CTL, val);
  
  	ice_flush(hw);
  }
  
  /**
   * ice_req_irq_msix_misc - Setup the misc vector to handle non queue events
   * @pf: board private structure
   *
   * This sets up the handler for MSIX 0, which is used to manage the
   * non-queue interrupts, e.g. AdminQ and errors. This is not used
   * when in MSI or Legacy interrupt mode.
   */
  static int ice_req_irq_msix_misc(struct ice_pf *pf)
  {
  	struct device *dev = ice_pf_to_dev(pf);
  	struct ice_hw *hw = &pf->hw;
  	int oicr_idx, err = 0;
  
  	if (!pf->int_name[0])
  		snprintf(pf->int_name, sizeof(pf->int_name) - 1, "%s-%s:misc",
  			 dev_driver_string(dev), dev_name(dev));
  
  	/* Do not request IRQ but do enable OICR interrupt since settings are
  	 * lost during reset. Note that this function is called only during
  	 * rebuild path and not while reset is in progress.
  	 */
  	if (ice_is_reset_in_progress(pf->state))
  		goto skip_req_irq;
  
  	/* reserve one vector in irq_tracker for misc interrupts */
  	oicr_idx = ice_get_res(pf, pf->irq_tracker, 1, ICE_RES_MISC_VEC_ID);
  	if (oicr_idx < 0)
  		return oicr_idx;
  
  	pf->num_avail_sw_msix -= 1;
  	pf->oicr_idx = (u16)oicr_idx;
  
  	err = devm_request_irq(dev, pf->msix_entries[pf->oicr_idx].vector,
  			       ice_misc_intr, 0, pf->int_name, pf);
  	if (err) {
  		dev_err(dev, "devm_request_irq for %s failed: %d\n",
  			pf->int_name, err);
  		ice_free_res(pf->irq_tracker, 1, ICE_RES_MISC_VEC_ID);
  		pf->num_avail_sw_msix += 1;
  		return err;
  	}
  
  skip_req_irq:
  	ice_ena_misc_vector(pf);
  
  	ice_ena_ctrlq_interrupts(hw, pf->oicr_idx);
  	wr32(hw, GLINT_ITR(ICE_RX_ITR, pf->oicr_idx),
  	     ITR_REG_ALIGN(ICE_ITR_8K) >> ICE_ITR_GRAN_S);
  
  	ice_flush(hw);
  	ice_irq_dynamic_ena(hw, NULL, NULL);
  
  	return 0;
  }
  
  /**
   * ice_napi_add - register NAPI handler for the VSI
   * @vsi: VSI for which NAPI handler is to be registered
   *
   * This function is only called in the driver's load path. Registering the NAPI
   * handler is done in ice_vsi_alloc_q_vector() for all other cases (i.e. resume,
   * reset/rebuild, etc.)
   */
  static void ice_napi_add(struct ice_vsi *vsi)
  {
  	int v_idx;
  
  	if (!vsi->netdev)
  		return;
  
  	ice_for_each_q_vector(vsi, v_idx)
  		netif_napi_add(vsi->netdev, &vsi->q_vectors[v_idx]->napi,
  			       ice_napi_poll, NAPI_POLL_WEIGHT);
  }
  
  /**
   * ice_set_ops - set netdev and ethtools ops for the given netdev
   * @netdev: netdev instance
   */
  static void ice_set_ops(struct net_device *netdev)
  {
  	struct ice_pf *pf = ice_netdev_to_pf(netdev);
  
  	if (ice_is_safe_mode(pf)) {
  		netdev->netdev_ops = &ice_netdev_safe_mode_ops;
  		ice_set_ethtool_safe_mode_ops(netdev);
  		return;
  	}
  
  	netdev->netdev_ops = &ice_netdev_ops;
  	netdev->udp_tunnel_nic_info = &pf->hw.udp_tunnel_nic;
  	ice_set_ethtool_ops(netdev);
  }
  
  /**
   * ice_set_netdev_features - set features for the given netdev
   * @netdev: netdev instance
   */
  static void ice_set_netdev_features(struct net_device *netdev)
  {
  	struct ice_pf *pf = ice_netdev_to_pf(netdev);
  	netdev_features_t csumo_features;
  	netdev_features_t vlano_features;
  	netdev_features_t dflt_features;
  	netdev_features_t tso_features;
  
  	if (ice_is_safe_mode(pf)) {
  		/* safe mode */
  		netdev->features = NETIF_F_SG | NETIF_F_HIGHDMA;
  		netdev->hw_features = netdev->features;
  		return;
  	}
  
  	dflt_features = NETIF_F_SG	|
  			NETIF_F_HIGHDMA	|
  			NETIF_F_NTUPLE	|
  			NETIF_F_RXHASH;
  
  	csumo_features = NETIF_F_RXCSUM	  |
  			 NETIF_F_IP_CSUM  |
  			 NETIF_F_SCTP_CRC |
  			 NETIF_F_IPV6_CSUM;
  
  	vlano_features = NETIF_F_HW_VLAN_CTAG_FILTER |
  			 NETIF_F_HW_VLAN_CTAG_TX     |
  			 NETIF_F_HW_VLAN_CTAG_RX;
  
  	tso_features = NETIF_F_TSO			|
  		       NETIF_F_TSO_ECN			|
  		       NETIF_F_TSO6			|
  		       NETIF_F_GSO_GRE			|
  		       NETIF_F_GSO_UDP_TUNNEL		|
  		       NETIF_F_GSO_GRE_CSUM		|
  		       NETIF_F_GSO_UDP_TUNNEL_CSUM	|
  		       NETIF_F_GSO_PARTIAL		|
  		       NETIF_F_GSO_IPXIP4		|
  		       NETIF_F_GSO_IPXIP6		|
  		       NETIF_F_GSO_UDP_L4;
  
  	netdev->gso_partial_features |= NETIF_F_GSO_UDP_TUNNEL_CSUM |
  					NETIF_F_GSO_GRE_CSUM;
  	/* set features that user can change */
  	netdev->hw_features = dflt_features | csumo_features |
  			      vlano_features | tso_features;
  
  	/* add support for HW_CSUM on packets with MPLS header */
  	netdev->mpls_features =  NETIF_F_HW_CSUM;
  
  	/* enable features */
  	netdev->features |= netdev->hw_features;
  	/* encap and VLAN devices inherit default, csumo and tso features */
  	netdev->hw_enc_features |= dflt_features | csumo_features |
  				   tso_features;
  	netdev->vlan_features |= dflt_features | csumo_features |
  				 tso_features;
  }
  
  /**
   * ice_cfg_netdev - Allocate, configure and register a netdev
   * @vsi: the VSI associated with the new netdev
   *
   * Returns 0 on success, negative value on failure
   */
  static int ice_cfg_netdev(struct ice_vsi *vsi)
  {
  	struct ice_pf *pf = vsi->back;
  	struct ice_netdev_priv *np;
  	struct net_device *netdev;
  	u8 mac_addr[ETH_ALEN];
  	int err;
  
  	err = ice_devlink_create_port(vsi);
  	if (err)
  		return err;
  
  	netdev = alloc_etherdev_mqs(sizeof(*np), vsi->alloc_txq,
  				    vsi->alloc_rxq);
  	if (!netdev) {
  		err = -ENOMEM;
  		goto err_destroy_devlink_port;
  	}
  
  	vsi->netdev = netdev;
  	np = netdev_priv(netdev);
  	np->vsi = vsi;
  
  	ice_set_netdev_features(netdev);
  
  	ice_set_ops(netdev);
  
  	if (vsi->type == ICE_VSI_PF) {
  		SET_NETDEV_DEV(netdev, ice_pf_to_dev(pf));
  		ether_addr_copy(mac_addr, vsi->port_info->mac.perm_addr);
  		ether_addr_copy(netdev->dev_addr, mac_addr);
  		ether_addr_copy(netdev->perm_addr, mac_addr);
  	}
  
  	netdev->priv_flags |= IFF_UNICAST_FLT;
  
  	/* Setup netdev TC information */
  	ice_vsi_cfg_netdev_tc(vsi, vsi->tc_cfg.ena_tc);
  
  	/* setup watchdog timeout value to be 5 second */
  	netdev->watchdog_timeo = 5 * HZ;
  
  	netdev->min_mtu = ETH_MIN_MTU;
  	netdev->max_mtu = ICE_MAX_MTU;
  
  	err = register_netdev(vsi->netdev);
  	if (err)
  		goto err_free_netdev;
  
  	devlink_port_type_eth_set(&vsi->devlink_port, vsi->netdev);
  
  	netif_carrier_off(vsi->netdev);
  
  	/* make sure transmit queues start off as stopped */
  	netif_tx_stop_all_queues(vsi->netdev);
  
  	return 0;
  
  err_free_netdev:
  	free_netdev(vsi->netdev);
  	vsi->netdev = NULL;
  err_destroy_devlink_port:
  	ice_devlink_destroy_port(vsi);
  	return err;
  }
  
  /**
   * ice_fill_rss_lut - Fill the RSS lookup table with default values
   * @lut: Lookup table
   * @rss_table_size: Lookup table size
   * @rss_size: Range of queue number for hashing
   */
  void ice_fill_rss_lut(u8 *lut, u16 rss_table_size, u16 rss_size)
  {
  	u16 i;
  
  	for (i = 0; i < rss_table_size; i++)
  		lut[i] = i % rss_size;
  }
  
  /**
   * ice_pf_vsi_setup - Set up a PF VSI
   * @pf: board private structure
   * @pi: pointer to the port_info instance
   *
   * Returns pointer to the successfully allocated VSI software struct
   * on success, otherwise returns NULL on failure.
   */
  static struct ice_vsi *
  ice_pf_vsi_setup(struct ice_pf *pf, struct ice_port_info *pi)
  {
  	return ice_vsi_setup(pf, pi, ICE_VSI_PF, ICE_INVAL_VFID);
  }
  
  /**
   * ice_ctrl_vsi_setup - Set up a control VSI
   * @pf: board private structure
   * @pi: pointer to the port_info instance
   *
   * Returns pointer to the successfully allocated VSI software struct
   * on success, otherwise returns NULL on failure.
   */
  static struct ice_vsi *
  ice_ctrl_vsi_setup(struct ice_pf *pf, struct ice_port_info *pi)
  {
  	return ice_vsi_setup(pf, pi, ICE_VSI_CTRL, ICE_INVAL_VFID);
  }
  
  /**
   * ice_lb_vsi_setup - Set up a loopback VSI
   * @pf: board private structure
   * @pi: pointer to the port_info instance
   *
   * Returns pointer to the successfully allocated VSI software struct
   * on success, otherwise returns NULL on failure.
   */
  struct ice_vsi *
  ice_lb_vsi_setup(struct ice_pf *pf, struct ice_port_info *pi)
  {
  	return ice_vsi_setup(pf, pi, ICE_VSI_LB, ICE_INVAL_VFID);
  }
  
  /**
   * ice_vlan_rx_add_vid - Add a VLAN ID filter to HW offload
   * @netdev: network interface to be adjusted
   * @proto: unused protocol
   * @vid: VLAN ID to be added
   *
   * net_device_ops implementation for adding VLAN IDs
   */
  static int
  ice_vlan_rx_add_vid(struct net_device *netdev, __always_unused __be16 proto,
  		    u16 vid)
  {
  	struct ice_netdev_priv *np = netdev_priv(netdev);
  	struct ice_vsi *vsi = np->vsi;
  	int ret;
  
  	if (vid >= VLAN_N_VID) {
  		netdev_err(netdev, "VLAN id requested %d is out of range %d\n",
  			   vid, VLAN_N_VID);
  		return -EINVAL;
  	}
  
  	if (vsi->info.pvid)
  		return -EINVAL;
  
  	/* VLAN 0 is added by default during load/reset */
  	if (!vid)
  		return 0;
  
  	/* Enable VLAN pruning when a VLAN other than 0 is added */
  	if (!ice_vsi_is_vlan_pruning_ena(vsi)) {
  		ret = ice_cfg_vlan_pruning(vsi, true, false);
  		if (ret)
  			return ret;
  	}
  
  	/* Add a switch rule for this VLAN ID so its corresponding VLAN tagged
  	 * packets aren't pruned by the device's internal switch on Rx
  	 */
  	ret = ice_vsi_add_vlan(vsi, vid, ICE_FWD_TO_VSI);
  	if (!ret) {
  		vsi->vlan_ena = true;
  		set_bit(ICE_VSI_FLAG_VLAN_FLTR_CHANGED, vsi->flags);
  	}
  
  	return ret;
  }
  
  /**
   * ice_vlan_rx_kill_vid - Remove a VLAN ID filter from HW offload
   * @netdev: network interface to be adjusted
   * @proto: unused protocol
   * @vid: VLAN ID to be removed
   *
   * net_device_ops implementation for removing VLAN IDs
   */
  static int
  ice_vlan_rx_kill_vid(struct net_device *netdev, __always_unused __be16 proto,
  		     u16 vid)
  {
  	struct ice_netdev_priv *np = netdev_priv(netdev);
  	struct ice_vsi *vsi = np->vsi;
  	int ret;
  
  	if (vsi->info.pvid)
  		return -EINVAL;
  
  	/* don't allow removal of VLAN 0 */
  	if (!vid)
  		return 0;
  
  	/* Make sure ice_vsi_kill_vlan is successful before updating VLAN
  	 * information
  	 */
  	ret = ice_vsi_kill_vlan(vsi, vid);
  	if (ret)
  		return ret;
  
  	/* Disable pruning when VLAN 0 is the only VLAN rule */
  	if (vsi->num_vlan == 1 && ice_vsi_is_vlan_pruning_ena(vsi))
  		ret = ice_cfg_vlan_pruning(vsi, false, false);
  
  	vsi->vlan_ena = false;
  	set_bit(ICE_VSI_FLAG_VLAN_FLTR_CHANGED, vsi->flags);
  	return ret;
  }
  
  /**
   * ice_setup_pf_sw - Setup the HW switch on startup or after reset
   * @pf: board private structure
   *
   * Returns 0 on success, negative value on failure
   */
  static int ice_setup_pf_sw(struct ice_pf *pf)
  {
  	struct ice_vsi *vsi;
  	int status = 0;
  
  	if (ice_is_reset_in_progress(pf->state))
  		return -EBUSY;
  
  	vsi = ice_pf_vsi_setup(pf, pf->hw.port_info);
  	if (!vsi)
  		return -ENOMEM;
  
  	status = ice_cfg_netdev(vsi);
  	if (status) {
  		status = -ENODEV;
  		goto unroll_vsi_setup;
  	}
  	/* netdev has to be configured before setting frame size */
  	ice_vsi_cfg_frame_size(vsi);
  
  	/* Setup DCB netlink interface */
  	ice_dcbnl_setup(vsi);
  
  	/* registering the NAPI handler requires both the queues and
  	 * netdev to be created, which are done in ice_pf_vsi_setup()
  	 * and ice_cfg_netdev() respectively
  	 */
  	ice_napi_add(vsi);
  
  	status = ice_set_cpu_rx_rmap(vsi);
  	if (status) {
  		dev_err(ice_pf_to_dev(pf), "Failed to set CPU Rx map VSI %d error %d\n",
  			vsi->vsi_num, status);
  		status = -EINVAL;
  		goto unroll_napi_add;
  	}
  	status = ice_init_mac_fltr(pf);
  	if (status)
  		goto free_cpu_rx_map;
  
  	return status;
  
  free_cpu_rx_map:
  	ice_free_cpu_rx_rmap(vsi);
  
  unroll_napi_add:
  	if (vsi) {
  		ice_napi_del(vsi);
  		if (vsi->netdev) {
  			if (vsi->netdev->reg_state == NETREG_REGISTERED)
  				unregister_netdev(vsi->netdev);
  			free_netdev(vsi->netdev);
  			vsi->netdev = NULL;
  		}
  	}
  
  unroll_vsi_setup:
  	ice_vsi_release(vsi);
  	return status;
  }
  
  /**
   * ice_get_avail_q_count - Get count of queues in use
   * @pf_qmap: bitmap to get queue use count from
   * @lock: pointer to a mutex that protects access to pf_qmap
   * @size: size of the bitmap
   */
  static u16
  ice_get_avail_q_count(unsigned long *pf_qmap, struct mutex *lock, u16 size)
  {
  	unsigned long bit;
  	u16 count = 0;
  
  	mutex_lock(lock);
  	for_each_clear_bit(bit, pf_qmap, size)
  		count++;
  	mutex_unlock(lock);
  
  	return count;
  }
  
  /**
   * ice_get_avail_txq_count - Get count of Tx queues in use
   * @pf: pointer to an ice_pf instance
   */
  u16 ice_get_avail_txq_count(struct ice_pf *pf)
  {
  	return ice_get_avail_q_count(pf->avail_txqs, &pf->avail_q_mutex,
  				     pf->max_pf_txqs);
  }
  
  /**
   * ice_get_avail_rxq_count - Get count of Rx queues in use
   * @pf: pointer to an ice_pf instance
   */
  u16 ice_get_avail_rxq_count(struct ice_pf *pf)
  {
  	return ice_get_avail_q_count(pf->avail_rxqs, &pf->avail_q_mutex,
  				     pf->max_pf_rxqs);
  }
  
  /**
   * ice_deinit_pf - Unrolls initialziations done by ice_init_pf
   * @pf: board private structure to initialize
   */
  static void ice_deinit_pf(struct ice_pf *pf)
  {
  	ice_service_task_stop(pf);
  	mutex_destroy(&pf->sw_mutex);
  	mutex_destroy(&pf->tc_mutex);
  	mutex_destroy(&pf->avail_q_mutex);
  
  	if (pf->avail_txqs) {
  		bitmap_free(pf->avail_txqs);
  		pf->avail_txqs = NULL;
  	}
  
  	if (pf->avail_rxqs) {
  		bitmap_free(pf->avail_rxqs);
  		pf->avail_rxqs = NULL;
  	}
  }
  
  /**
   * ice_set_pf_caps - set PFs capability flags
   * @pf: pointer to the PF instance
   */
  static void ice_set_pf_caps(struct ice_pf *pf)
  {
  	struct ice_hw_func_caps *func_caps = &pf->hw.func_caps;
  
  	clear_bit(ICE_FLAG_DCB_CAPABLE, pf->flags);
  	if (func_caps->common_cap.dcb)
  		set_bit(ICE_FLAG_DCB_CAPABLE, pf->flags);
  	clear_bit(ICE_FLAG_SRIOV_CAPABLE, pf->flags);
  	if (func_caps->common_cap.sr_iov_1_1) {
  		set_bit(ICE_FLAG_SRIOV_CAPABLE, pf->flags);
  		pf->num_vfs_supported = min_t(int, func_caps->num_allocd_vfs,
  					      ICE_MAX_VF_COUNT);
  	}
  	clear_bit(ICE_FLAG_RSS_ENA, pf->flags);
  	if (func_caps->common_cap.rss_table_size)
  		set_bit(ICE_FLAG_RSS_ENA, pf->flags);
  
  	clear_bit(ICE_FLAG_FD_ENA, pf->flags);
  	if (func_caps->fd_fltr_guar > 0 || func_caps->fd_fltr_best_effort > 0) {
  		u16 unused;
  
  		/* ctrl_vsi_idx will be set to a valid value when flow director
  		 * is setup by ice_init_fdir
  		 */
  		pf->ctrl_vsi_idx = ICE_NO_VSI;
  		set_bit(ICE_FLAG_FD_ENA, pf->flags);
  		/* force guaranteed filter pool for PF */
  		ice_alloc_fd_guar_item(&pf->hw, &unused,
  				       func_caps->fd_fltr_guar);
  		/* force shared filter pool for PF */
  		ice_alloc_fd_shrd_item(&pf->hw, &unused,
  				       func_caps->fd_fltr_best_effort);
  	}
  
  	pf->max_pf_txqs = func_caps->common_cap.num_txq;
  	pf->max_pf_rxqs = func_caps->common_cap.num_rxq;
  }
  
  /**
   * ice_init_pf - Initialize general software structures (struct ice_pf)
   * @pf: board private structure to initialize
   */
  static int ice_init_pf(struct ice_pf *pf)
  {
  	ice_set_pf_caps(pf);
  
  	mutex_init(&pf->sw_mutex);
  	mutex_init(&pf->tc_mutex);
  
  	INIT_HLIST_HEAD(&pf->aq_wait_list);
  	spin_lock_init(&pf->aq_wait_lock);
  	init_waitqueue_head(&pf->aq_wait_queue);
  
  	/* setup service timer and periodic service task */
  	timer_setup(&pf->serv_tmr, ice_service_timer, 0);
  	pf->serv_tmr_period = HZ;
  	INIT_WORK(&pf->serv_task, ice_service_task);
  	clear_bit(__ICE_SERVICE_SCHED, pf->state);
  
  	mutex_init(&pf->avail_q_mutex);
  	pf->avail_txqs = bitmap_zalloc(pf->max_pf_txqs, GFP_KERNEL);
  	if (!pf->avail_txqs)
  		return -ENOMEM;
  
  	pf->avail_rxqs = bitmap_zalloc(pf->max_pf_rxqs, GFP_KERNEL);
  	if (!pf->avail_rxqs) {
  		devm_kfree(ice_pf_to_dev(pf), pf->avail_txqs);
  		pf->avail_txqs = NULL;
  		return -ENOMEM;
  	}
  
  	return 0;
  }
  
  /**
   * ice_ena_msix_range - Request a range of MSIX vectors from the OS
   * @pf: board private structure
   *
   * compute the number of MSIX vectors required (v_budget) and request from
   * the OS. Return the number of vectors reserved or negative on failure
   */
  static int ice_ena_msix_range(struct ice_pf *pf)
  {
  	struct device *dev = ice_pf_to_dev(pf);
  	int v_left, v_actual, v_budget = 0;
  	int needed, err, i;
  
  	v_left = pf->hw.func_caps.common_cap.num_msix_vectors;
  
  	/* reserve one vector for miscellaneous handler */
  	needed = 1;
  	if (v_left < needed)
  		goto no_hw_vecs_left_err;
  	v_budget += needed;
  	v_left -= needed;
  
  	/* reserve vectors for LAN traffic */
  	needed = min_t(int, num_online_cpus(), v_left);
  	if (v_left < needed)
  		goto no_hw_vecs_left_err;
  	pf->num_lan_msix = needed;
  	v_budget += needed;
  	v_left -= needed;
  
  	/* reserve one vector for flow director */
  	if (test_bit(ICE_FLAG_FD_ENA, pf->flags)) {
  		needed = ICE_FDIR_MSIX;
  		if (v_left < needed)
  			goto no_hw_vecs_left_err;
  		v_budget += needed;
  		v_left -= needed;
  	}
  
  	pf->msix_entries = devm_kcalloc(dev, v_budget,
  					sizeof(*pf->msix_entries), GFP_KERNEL);
  
  	if (!pf->msix_entries) {
  		err = -ENOMEM;
  		goto exit_err;
  	}
  
  	for (i = 0; i < v_budget; i++)
  		pf->msix_entries[i].entry = i;
  
  	/* actually reserve the vectors */
  	v_actual = pci_enable_msix_range(pf->pdev, pf->msix_entries,
  					 ICE_MIN_MSIX, v_budget);
  
  	if (v_actual < 0) {
  		dev_err(dev, "unable to reserve MSI-X vectors\n");
  		err = v_actual;
  		goto msix_err;
  	}
  
  	if (v_actual < v_budget) {
  		dev_warn(dev, "not enough OS MSI-X vectors. requested = %d, obtained = %d\n",
  			 v_budget, v_actual);
  
  		if (v_actual < ICE_MIN_MSIX) {
  			/* error if we can't get minimum vectors */
  			pci_disable_msix(pf->pdev);
  			err = -ERANGE;
  			goto msix_err;
  		} else {
  			pf->num_lan_msix = ICE_MIN_LAN_TXRX_MSIX;
  		}
  	}
  
  	return v_actual;
  
  msix_err:
  	devm_kfree(dev, pf->msix_entries);
  	goto exit_err;
  
  no_hw_vecs_left_err:
  	dev_err(dev, "not enough device MSI-X vectors. requested = %d, available = %d\n",
  		needed, v_left);
  	err = -ERANGE;
  exit_err:
  	pf->num_lan_msix = 0;
  	return err;
  }
  
  /**
   * ice_dis_msix - Disable MSI-X interrupt setup in OS
   * @pf: board private structure
   */
  static void ice_dis_msix(struct ice_pf *pf)
  {
  	pci_disable_msix(pf->pdev);
  	devm_kfree(ice_pf_to_dev(pf), pf->msix_entries);
  	pf->msix_entries = NULL;
  }
  
  /**
   * ice_clear_interrupt_scheme - Undo things done by ice_init_interrupt_scheme
   * @pf: board private structure
   */
  static void ice_clear_interrupt_scheme(struct ice_pf *pf)
  {
  	ice_dis_msix(pf);
  
  	if (pf->irq_tracker) {
  		devm_kfree(ice_pf_to_dev(pf), pf->irq_tracker);
  		pf->irq_tracker = NULL;
  	}
  }
  
  /**
   * ice_init_interrupt_scheme - Determine proper interrupt scheme
   * @pf: board private structure to initialize
   */
  static int ice_init_interrupt_scheme(struct ice_pf *pf)
  {
  	int vectors;
  
  	vectors = ice_ena_msix_range(pf);
  
  	if (vectors < 0)
  		return vectors;
  
  	/* set up vector assignment tracking */
  	pf->irq_tracker =
  		devm_kzalloc(ice_pf_to_dev(pf), sizeof(*pf->irq_tracker) +
  			     (sizeof(u16) * vectors), GFP_KERNEL);
  	if (!pf->irq_tracker) {
  		ice_dis_msix(pf);
  		return -ENOMEM;
  	}
  
  	/* populate SW interrupts pool with number of OS granted IRQs. */
  	pf->num_avail_sw_msix = (u16)vectors;
  	pf->irq_tracker->num_entries = (u16)vectors;
  	pf->irq_tracker->end = pf->irq_tracker->num_entries;
  
  	return 0;
  }
  
  /**
   * ice_is_wol_supported - check if WoL is supported
   * @hw: pointer to hardware info
   *
   * Check if WoL is supported based on the HW configuration.
   * Returns true if NVM supports and enables WoL for this port, false otherwise
   */
  bool ice_is_wol_supported(struct ice_hw *hw)
  {
  	u16 wol_ctrl;
  
  	/* A bit set to 1 in the NVM Software Reserved Word 2 (WoL control
  	 * word) indicates WoL is not supported on the corresponding PF ID.
  	 */
  	if (ice_read_sr_word(hw, ICE_SR_NVM_WOL_CFG, &wol_ctrl))
  		return false;
  
  	return !(BIT(hw->port_info->lport) & wol_ctrl);
  }
  
  /**
   * ice_vsi_recfg_qs - Change the number of queues on a VSI
   * @vsi: VSI being changed
   * @new_rx: new number of Rx queues
   * @new_tx: new number of Tx queues
   *
   * Only change the number of queues if new_tx, or new_rx is non-0.
   *
   * Returns 0 on success.
   */
  int ice_vsi_recfg_qs(struct ice_vsi *vsi, int new_rx, int new_tx)
  {
  	struct ice_pf *pf = vsi->back;
  	int err = 0, timeout = 50;
  
  	if (!new_rx && !new_tx)
  		return -EINVAL;
  
  	while (test_and_set_bit(__ICE_CFG_BUSY, pf->state)) {
  		timeout--;
  		if (!timeout)
  			return -EBUSY;
  		usleep_range(1000, 2000);
  	}
  
  	if (new_tx)
  		vsi->req_txq = (u16)new_tx;
  	if (new_rx)
  		vsi->req_rxq = (u16)new_rx;
  
  	/* set for the next time the netdev is started */
  	if (!netif_running(vsi->netdev)) {
  		ice_vsi_rebuild(vsi, false);
  		dev_dbg(ice_pf_to_dev(pf), "Link is down, queue count change happens when link is brought up\n");
  		goto done;
  	}
  
  	ice_vsi_close(vsi);
  	ice_vsi_rebuild(vsi, false);
  	ice_pf_dcb_recfg(pf);
  	ice_vsi_open(vsi);
  done:
  	clear_bit(__ICE_CFG_BUSY, pf->state);
  	return err;
  }
  
  /**
   * ice_set_safe_mode_vlan_cfg - configure PF VSI to allow all VLANs in safe mode
   * @pf: PF to configure
   *
   * No VLAN offloads/filtering are advertised in safe mode so make sure the PF
   * VSI can still Tx/Rx VLAN tagged packets.
   */
  static void ice_set_safe_mode_vlan_cfg(struct ice_pf *pf)
  {
  	struct ice_vsi *vsi = ice_get_main_vsi(pf);
  	struct ice_vsi_ctx *ctxt;
  	enum ice_status status;
  	struct ice_hw *hw;
  
  	if (!vsi)
  		return;
  
  	ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL);
  	if (!ctxt)
  		return;
  
  	hw = &pf->hw;
  	ctxt->info = vsi->info;
  
  	ctxt->info.valid_sections =
  		cpu_to_le16(ICE_AQ_VSI_PROP_VLAN_VALID |
  			    ICE_AQ_VSI_PROP_SECURITY_VALID |
  			    ICE_AQ_VSI_PROP_SW_VALID);
  
  	/* disable VLAN anti-spoof */
  	ctxt->info.sec_flags &= ~(ICE_AQ_VSI_SEC_TX_VLAN_PRUNE_ENA <<
  				  ICE_AQ_VSI_SEC_TX_PRUNE_ENA_S);
  
  	/* disable VLAN pruning and keep all other settings */
  	ctxt->info.sw_flags2 &= ~ICE_AQ_VSI_SW_FLAG_RX_VLAN_PRUNE_ENA;
  
  	/* allow all VLANs on Tx and don't strip on Rx */
  	ctxt->info.vlan_flags = ICE_AQ_VSI_VLAN_MODE_ALL |
  		ICE_AQ_VSI_VLAN_EMOD_NOTHING;
  
  	status = ice_update_vsi(hw, vsi->idx, ctxt, NULL);
  	if (status) {
  		dev_err(ice_pf_to_dev(vsi->back), "Failed to update VSI for safe mode VLANs, err %s aq_err %s\n",
  			ice_stat_str(status),
  			ice_aq_str(hw->adminq.sq_last_status));
  	} else {
  		vsi->info.sec_flags = ctxt->info.sec_flags;
  		vsi->info.sw_flags2 = ctxt->info.sw_flags2;
  		vsi->info.vlan_flags = ctxt->info.vlan_flags;
  	}
  
  	kfree(ctxt);
  }
  
  /**
   * ice_log_pkg_init - log result of DDP package load
   * @hw: pointer to hardware info
   * @status: status of package load
   */
  static void
  ice_log_pkg_init(struct ice_hw *hw, enum ice_status *status)
  {
  	struct ice_pf *pf = (struct ice_pf *)hw->back;
  	struct device *dev = ice_pf_to_dev(pf);
  
  	switch (*status) {
  	case ICE_SUCCESS:
  		/* The package download AdminQ command returned success because
  		 * this download succeeded or ICE_ERR_AQ_NO_WORK since there is
  		 * already a package loaded on the device.
  		 */
  		if (hw->pkg_ver.major == hw->active_pkg_ver.major &&
  		    hw->pkg_ver.minor == hw->active_pkg_ver.minor &&
  		    hw->pkg_ver.update == hw->active_pkg_ver.update &&
  		    hw->pkg_ver.draft == hw->active_pkg_ver.draft &&
  		    !memcmp(hw->pkg_name, hw->active_pkg_name,
  			    sizeof(hw->pkg_name))) {
  			if (hw->pkg_dwnld_status == ICE_AQ_RC_EEXIST)
  				dev_info(dev, "DDP package already present on device: %s version %d.%d.%d.%d\n",
  					 hw->active_pkg_name,
  					 hw->active_pkg_ver.major,
  					 hw->active_pkg_ver.minor,
  					 hw->active_pkg_ver.update,
  					 hw->active_pkg_ver.draft);
  			else
  				dev_info(dev, "The DDP package was successfully loaded: %s version %d.%d.%d.%d\n",
  					 hw->active_pkg_name,
  					 hw->active_pkg_ver.major,
  					 hw->active_pkg_ver.minor,
  					 hw->active_pkg_ver.update,
  					 hw->active_pkg_ver.draft);
  		} else if (hw->active_pkg_ver.major != ICE_PKG_SUPP_VER_MAJ ||
  			   hw->active_pkg_ver.minor != ICE_PKG_SUPP_VER_MNR) {
  			dev_err(dev, "The device has a DDP package that is not supported by the driver.  The device has package '%s' version %d.%d.x.x.  The driver requires version %d.%d.x.x.  Entering Safe Mode.\n",
  				hw->active_pkg_name,
  				hw->active_pkg_ver.major,
  				hw->active_pkg_ver.minor,
  				ICE_PKG_SUPP_VER_MAJ, ICE_PKG_SUPP_VER_MNR);
  			*status = ICE_ERR_NOT_SUPPORTED;
  		} else if (hw->active_pkg_ver.major == ICE_PKG_SUPP_VER_MAJ &&
  			   hw->active_pkg_ver.minor == ICE_PKG_SUPP_VER_MNR) {
  			dev_info(dev, "The driver could not load the DDP package file because a compatible DDP package is already present on the device.  The device has package '%s' version %d.%d.%d.%d.  The package file found by the driver: '%s' version %d.%d.%d.%d.\n",
  				 hw->active_pkg_name,
  				 hw->active_pkg_ver.major,
  				 hw->active_pkg_ver.minor,
  				 hw->active_pkg_ver.update,
  				 hw->active_pkg_ver.draft,
  				 hw->pkg_name,
  				 hw->pkg_ver.major,
  				 hw->pkg_ver.minor,
  				 hw->pkg_ver.update,
  				 hw->pkg_ver.draft);
  		} else {
  			dev_err(dev, "An unknown error occurred when loading the DDP package, please reboot the system.  If the problem persists, update the NVM.  Entering Safe Mode.\n");
  			*status = ICE_ERR_NOT_SUPPORTED;
  		}
  		break;
  	case ICE_ERR_FW_DDP_MISMATCH:
  		dev_err(dev, "The firmware loaded on the device is not compatible with the DDP package.  Please update the device's NVM.  Entering safe mode.\n");
  		break;
  	case ICE_ERR_BUF_TOO_SHORT:
  	case ICE_ERR_CFG:
  		dev_err(dev, "The DDP package file is invalid. Entering Safe Mode.\n");
  		break;
  	case ICE_ERR_NOT_SUPPORTED:
  		/* Package File version not supported */
  		if (hw->pkg_ver.major > ICE_PKG_SUPP_VER_MAJ ||
  		    (hw->pkg_ver.major == ICE_PKG_SUPP_VER_MAJ &&
  		     hw->pkg_ver.minor > ICE_PKG_SUPP_VER_MNR))
  			dev_err(dev, "The DDP package file version is higher than the driver supports.  Please use an updated driver.  Entering Safe Mode.\n");
  		else if (hw->pkg_ver.major < ICE_PKG_SUPP_VER_MAJ ||
  			 (hw->pkg_ver.major == ICE_PKG_SUPP_VER_MAJ &&
  			  hw->pkg_ver.minor < ICE_PKG_SUPP_VER_MNR))
  			dev_err(dev, "The DDP package file version is lower than the driver supports.  The driver requires version %d.%d.x.x.  Please use an updated DDP Package file.  Entering Safe Mode.\n",
  				ICE_PKG_SUPP_VER_MAJ, ICE_PKG_SUPP_VER_MNR);
  		break;
  	case ICE_ERR_AQ_ERROR:
  		switch (hw->pkg_dwnld_status) {
  		case ICE_AQ_RC_ENOSEC:
  		case ICE_AQ_RC_EBADSIG:
  			dev_err(dev, "The DDP package could not be loaded because its signature is not valid.  Please use a valid DDP Package.  Entering Safe Mode.\n");
  			return;
  		case ICE_AQ_RC_ESVN:
  			dev_err(dev, "The DDP Package could not be loaded because its security revision is too low.  Please use an updated DDP Package.  Entering Safe Mode.\n");
  			return;
  		case ICE_AQ_RC_EBADMAN:
  		case ICE_AQ_RC_EBADBUF:
  			dev_err(dev, "An error occurred on the device while loading the DDP package.  The device will be reset.\n");
  			/* poll for reset to complete */
  			if (ice_check_reset(hw))
  				dev_err(dev, "Error resetting device. Please reload the driver\n");
  			return;
  		default:
  			break;
  		}
  		fallthrough;
  	default:
  		dev_err(dev, "An unknown error (%d) occurred when loading the DDP package.  Entering Safe Mode.\n",
  			*status);
  		break;
  	}
  }
  
  /**
   * ice_load_pkg - load/reload the DDP Package file
   * @firmware: firmware structure when firmware requested or NULL for reload
   * @pf: pointer to the PF instance
   *
   * Called on probe and post CORER/GLOBR rebuild to load DDP Package and
   * initialize HW tables.
   */
  static void
  ice_load_pkg(const struct firmware *firmware, struct ice_pf *pf)
  {
  	enum ice_status status = ICE_ERR_PARAM;
  	struct device *dev = ice_pf_to_dev(pf);
  	struct ice_hw *hw = &pf->hw;
  
  	/* Load DDP Package */
  	if (firmware && !hw->pkg_copy) {
  		status = ice_copy_and_init_pkg(hw, firmware->data,
  					       firmware->size);
  		ice_log_pkg_init(hw, &status);
  	} else if (!firmware && hw->pkg_copy) {
  		/* Reload package during rebuild after CORER/GLOBR reset */
  		status = ice_init_pkg(hw, hw->pkg_copy, hw->pkg_size);
  		ice_log_pkg_init(hw, &status);
  	} else {
  		dev_err(dev, "The DDP package file failed to load. Entering Safe Mode.\n");
  	}
  
  	if (status) {
  		/* Safe Mode */
  		clear_bit(ICE_FLAG_ADV_FEATURES, pf->flags);
  		return;
  	}
  
  	/* Successful download package is the precondition for advanced
  	 * features, hence setting the ICE_FLAG_ADV_FEATURES flag
  	 */
  	set_bit(ICE_FLAG_ADV_FEATURES, pf->flags);
  }
  
  /**
   * ice_verify_cacheline_size - verify driver's assumption of 64 Byte cache lines
   * @pf: pointer to the PF structure
   *
   * There is no error returned here because the driver should be able to handle
   * 128 Byte cache lines, so we only print a warning in case issues are seen,
   * specifically with Tx.
   */
  static void ice_verify_cacheline_size(struct ice_pf *pf)
  {
  	if (rd32(&pf->hw, GLPCI_CNF2) & GLPCI_CNF2_CACHELINE_SIZE_M)
  		dev_warn(ice_pf_to_dev(pf), "%d Byte cache line assumption is invalid, driver may have Tx timeouts!\n",
  			 ICE_CACHE_LINE_BYTES);
  }
  
  /**
   * ice_send_version - update firmware with driver version
   * @pf: PF struct
   *
   * Returns ICE_SUCCESS on success, else error code
   */
  static enum ice_status ice_send_version(struct ice_pf *pf)
  {
  	struct ice_driver_ver dv;
  
  	dv.major_ver = 0xff;
  	dv.minor_ver = 0xff;
  	dv.build_ver = 0xff;
  	dv.subbuild_ver = 0;
  	strscpy((char *)dv.driver_string, UTS_RELEASE,
  		sizeof(dv.driver_string));
  	return ice_aq_send_driver_ver(&pf->hw, &dv, NULL);
  }
  
  /**
   * ice_init_fdir - Initialize flow director VSI and configuration
   * @pf: pointer to the PF instance
   *
   * returns 0 on success, negative on error
   */
  static int ice_init_fdir(struct ice_pf *pf)
  {
  	struct device *dev = ice_pf_to_dev(pf);
  	struct ice_vsi *ctrl_vsi;
  	int err;
  
  	/* Side Band Flow Director needs to have a control VSI.
  	 * Allocate it and store it in the PF.
  	 */
  	ctrl_vsi = ice_ctrl_vsi_setup(pf, pf->hw.port_info);
  	if (!ctrl_vsi) {
  		dev_dbg(dev, "could not create control VSI\n");
  		return -ENOMEM;
  	}
  
  	err = ice_vsi_open_ctrl(ctrl_vsi);
  	if (err) {
  		dev_dbg(dev, "could not open control VSI\n");
  		goto err_vsi_open;
  	}
  
  	mutex_init(&pf->hw.fdir_fltr_lock);
  
  	err = ice_fdir_create_dflt_rules(pf);
  	if (err)
  		goto err_fdir_rule;
  
  	return 0;
  
  err_fdir_rule:
  	ice_fdir_release_flows(&pf->hw);
  	ice_vsi_close(ctrl_vsi);
  err_vsi_open:
  	ice_vsi_release(ctrl_vsi);
  	if (pf->ctrl_vsi_idx != ICE_NO_VSI) {
  		pf->vsi[pf->ctrl_vsi_idx] = NULL;
  		pf->ctrl_vsi_idx = ICE_NO_VSI;
  	}
  	return err;
  }
  
  /**
   * ice_get_opt_fw_name - return optional firmware file name or NULL
   * @pf: pointer to the PF instance
   */
  static char *ice_get_opt_fw_name(struct ice_pf *pf)
  {
  	/* Optional firmware name same as default with additional dash
  	 * followed by a EUI-64 identifier (PCIe Device Serial Number)
  	 */
  	struct pci_dev *pdev = pf->pdev;
  	char *opt_fw_filename;
  	u64 dsn;
  
  	/* Determine the name of the optional file using the DSN (two
  	 * dwords following the start of the DSN Capability).
  	 */
  	dsn = pci_get_dsn(pdev);
  	if (!dsn)
  		return NULL;
  
  	opt_fw_filename = kzalloc(NAME_MAX, GFP_KERNEL);
  	if (!opt_fw_filename)
  		return NULL;
  
  	snprintf(opt_fw_filename, NAME_MAX, "%sice-%016llx.pkg",
  		 ICE_DDP_PKG_PATH, dsn);
  
  	return opt_fw_filename;
  }
  
  /**
   * ice_request_fw - Device initialization routine
   * @pf: pointer to the PF instance
   */
  static void ice_request_fw(struct ice_pf *pf)
  {
  	char *opt_fw_filename = ice_get_opt_fw_name(pf);
  	const struct firmware *firmware = NULL;
  	struct device *dev = ice_pf_to_dev(pf);
  	int err = 0;
  
  	/* optional device-specific DDP (if present) overrides the default DDP
  	 * package file. kernel logs a debug message if the file doesn't exist,
  	 * and warning messages for other errors.
  	 */
  	if (opt_fw_filename) {
  		err = firmware_request_nowarn(&firmware, opt_fw_filename, dev);
  		if (err) {
  			kfree(opt_fw_filename);
  			goto dflt_pkg_load;
  		}
  
  		/* request for firmware was successful. Download to device */
  		ice_load_pkg(firmware, pf);
  		kfree(opt_fw_filename);
  		release_firmware(firmware);
  		return;
  	}
  
  dflt_pkg_load:
  	err = request_firmware(&firmware, ICE_DDP_PKG_FILE, dev);
  	if (err) {
  		dev_err(dev, "The DDP package file was not found or could not be read. Entering Safe Mode\n");
  		return;
  	}
  
  	/* request for firmware was successful. Download to device */
  	ice_load_pkg(firmware, pf);
  	release_firmware(firmware);
  }
  
  /**
   * ice_print_wake_reason - show the wake up cause in the log
   * @pf: pointer to the PF struct
   */
  static void ice_print_wake_reason(struct ice_pf *pf)
  {
  	u32 wus = pf->wakeup_reason;
  	const char *wake_str;
  
  	/* if no wake event, nothing to print */
  	if (!wus)
  		return;
  
  	if (wus & PFPM_WUS_LNKC_M)
  		wake_str = "Link\n";
  	else if (wus & PFPM_WUS_MAG_M)
  		wake_str = "Magic Packet\n";
  	else if (wus & PFPM_WUS_MNG_M)
  		wake_str = "Management\n";
  	else if (wus & PFPM_WUS_FW_RST_WK_M)
  		wake_str = "Firmware Reset\n";
  	else
  		wake_str = "Unknown\n";
  
  	dev_info(ice_pf_to_dev(pf), "Wake reason: %s", wake_str);
  }
  
  /**
   * ice_probe - Device initialization routine
   * @pdev: PCI device information struct
   * @ent: entry in ice_pci_tbl
   *
   * Returns 0 on success, negative on failure
   */
  static int
  ice_probe(struct pci_dev *pdev, const struct pci_device_id __always_unused *ent)
  {
  	struct device *dev = &pdev->dev;
  	struct ice_pf *pf;
  	struct ice_hw *hw;
  	int i, err;
  
  	if (pdev->is_virtfn) {
  		dev_err(dev, "can't probe a virtual function\n");
  		return -EINVAL;
  	}
  
  	/* this driver uses devres, see
  	 * Documentation/driver-api/driver-model/devres.rst
  	 */
  	err = pcim_enable_device(pdev);
  	if (err)
  		return err;
  
  	err = pcim_iomap_regions(pdev, BIT(ICE_BAR0), pci_name(pdev));
  	if (err) {
  		dev_err(dev, "BAR0 I/O map error %d\n", err);
  		return err;
  	}
  
  	pf = ice_allocate_pf(dev);
  	if (!pf)
  		return -ENOMEM;
  
  	/* set up for high or low DMA */
  	err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64));
  	if (err)
  		err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32));
  	if (err) {
  		dev_err(dev, "DMA configuration failed: 0x%x\n", err);
  		return err;
  	}
  
  	pci_enable_pcie_error_reporting(pdev);
  	pci_set_master(pdev);
  
  	pf->pdev = pdev;
  	pci_set_drvdata(pdev, pf);
  	set_bit(__ICE_DOWN, pf->state);
  	/* Disable service task until DOWN bit is cleared */
  	set_bit(__ICE_SERVICE_DIS, pf->state);
  
  	hw = &pf->hw;
  	hw->hw_addr = pcim_iomap_table(pdev)[ICE_BAR0];
  	pci_save_state(pdev);
  
  	hw->back = pf;
  	hw->vendor_id = pdev->vendor;
  	hw->device_id = pdev->device;
  	pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
  	hw->subsystem_vendor_id = pdev->subsystem_vendor;
  	hw->subsystem_device_id = pdev->subsystem_device;
  	hw->bus.device = PCI_SLOT(pdev->devfn);
  	hw->bus.func = PCI_FUNC(pdev->devfn);
  	ice_set_ctrlq_len(hw);
  
  	pf->msg_enable = netif_msg_init(debug, ICE_DFLT_NETIF_M);
  
  	err = ice_devlink_register(pf);
  	if (err) {
  		dev_err(dev, "ice_devlink_register failed: %d\n", err);
  		goto err_exit_unroll;
  	}
  
  #ifndef CONFIG_DYNAMIC_DEBUG
  	if (debug < -1)
  		hw->debug_mask = debug;
  #endif
  
  	err = ice_init_hw(hw);
  	if (err) {
  		dev_err(dev, "ice_init_hw failed: %d\n", err);
  		err = -EIO;
  		goto err_exit_unroll;
  	}
  
  	ice_request_fw(pf);
  
  	/* if ice_request_fw fails, ICE_FLAG_ADV_FEATURES bit won't be
  	 * set in pf->state, which will cause ice_is_safe_mode to return
  	 * true
  	 */
  	if (ice_is_safe_mode(pf)) {
  		dev_err(dev, "Package download failed. Advanced features disabled - Device now in Safe Mode\n");
  		/* we already got function/device capabilities but these don't
  		 * reflect what the driver needs to do in safe mode. Instead of
  		 * adding conditional logic everywhere to ignore these
  		 * device/function capabilities, override them.
  		 */
  		ice_set_safe_mode_caps(hw);
  	}
  
  	err = ice_init_pf(pf);
  	if (err) {
  		dev_err(dev, "ice_init_pf failed: %d\n", err);
  		goto err_init_pf_unroll;
  	}
  
  	ice_devlink_init_regions(pf);
  
  	pf->hw.udp_tunnel_nic.set_port = ice_udp_tunnel_set_port;
  	pf->hw.udp_tunnel_nic.unset_port = ice_udp_tunnel_unset_port;
  	pf->hw.udp_tunnel_nic.flags = UDP_TUNNEL_NIC_INFO_MAY_SLEEP;
  	pf->hw.udp_tunnel_nic.shared = &pf->hw.udp_tunnel_shared;
  	i = 0;
  	if (pf->hw.tnl.valid_count[TNL_VXLAN]) {
  		pf->hw.udp_tunnel_nic.tables[i].n_entries =
  			pf->hw.tnl.valid_count[TNL_VXLAN];
  		pf->hw.udp_tunnel_nic.tables[i].tunnel_types =
  			UDP_TUNNEL_TYPE_VXLAN;
  		i++;
  	}
  	if (pf->hw.tnl.valid_count[TNL_GENEVE]) {
  		pf->hw.udp_tunnel_nic.tables[i].n_entries =
  			pf->hw.tnl.valid_count[TNL_GENEVE];
  		pf->hw.udp_tunnel_nic.tables[i].tunnel_types =
  			UDP_TUNNEL_TYPE_GENEVE;
  		i++;
  	}
  
  	pf->num_alloc_vsi = hw->func_caps.guar_num_vsi;
  	if (!pf->num_alloc_vsi) {
  		err = -EIO;
  		goto err_init_pf_unroll;
  	}
  	if (pf->num_alloc_vsi > UDP_TUNNEL_NIC_MAX_SHARING_DEVICES) {
  		dev_warn(&pf->pdev->dev,
  			 "limiting the VSI count due to UDP tunnel limitation %d > %d\n",
  			 pf->num_alloc_vsi, UDP_TUNNEL_NIC_MAX_SHARING_DEVICES);
  		pf->num_alloc_vsi = UDP_TUNNEL_NIC_MAX_SHARING_DEVICES;
  	}
  
  	pf->vsi = devm_kcalloc(dev, pf->num_alloc_vsi, sizeof(*pf->vsi),
  			       GFP_KERNEL);
  	if (!pf->vsi) {
  		err = -ENOMEM;
  		goto err_init_pf_unroll;
  	}
  
  	err = ice_init_interrupt_scheme(pf);
  	if (err) {
  		dev_err(dev, "ice_init_interrupt_scheme failed: %d\n", err);
  		err = -EIO;
  		goto err_init_vsi_unroll;
  	}
  
  	/* In case of MSIX we are going to setup the misc vector right here
  	 * to handle admin queue events etc. In case of legacy and MSI
  	 * the misc functionality and queue processing is combined in
  	 * the same vector and that gets setup at open.
  	 */
  	err = ice_req_irq_msix_misc(pf);
  	if (err) {
  		dev_err(dev, "setup of misc vector failed: %d\n", err);
  		goto err_init_interrupt_unroll;
  	}
  
  	/* create switch struct for the switch element created by FW on boot */
  	pf->first_sw = devm_kzalloc(dev, sizeof(*pf->first_sw), GFP_KERNEL);
  	if (!pf->first_sw) {
  		err = -ENOMEM;
  		goto err_msix_misc_unroll;
  	}
  
  	if (hw->evb_veb)
  		pf->first_sw->bridge_mode = BRIDGE_MODE_VEB;
  	else
  		pf->first_sw->bridge_mode = BRIDGE_MODE_VEPA;
  
  	pf->first_sw->pf = pf;
  
  	/* record the sw_id available for later use */
  	pf->first_sw->sw_id = hw->port_info->sw_id;
  
  	err = ice_setup_pf_sw(pf);
  	if (err) {
  		dev_err(dev, "probe failed due to setup PF switch: %d\n", err);
  		goto err_alloc_sw_unroll;
  	}
  
  	clear_bit(__ICE_SERVICE_DIS, pf->state);
  
  	/* tell the firmware we are up */
  	err = ice_send_version(pf);
  	if (err) {
  		dev_err(dev, "probe failed sending driver version %s. error: %d\n",
  			UTS_RELEASE, err);
  		goto err_send_version_unroll;
  	}
  
  	/* since everything is good, start the service timer */
  	mod_timer(&pf->serv_tmr, round_jiffies(jiffies + pf->serv_tmr_period));
  
  	err = ice_init_link_events(pf->hw.port_info);
  	if (err) {
  		dev_err(dev, "ice_init_link_events failed: %d\n", err);
  		goto err_send_version_unroll;
  	}
  
  	/* not a fatal error if this fails */
  	err = ice_init_nvm_phy_type(pf->hw.port_info);
  	if (err)
  		dev_err(dev, "ice_init_nvm_phy_type failed: %d\n", err);
  
  	/* not a fatal error if this fails */
  	err = ice_update_link_info(pf->hw.port_info);
  	if (err)
  		dev_err(dev, "ice_update_link_info failed: %d\n", err);
  
  	ice_init_link_dflt_override(pf->hw.port_info);
  
  	/* if media available, initialize PHY settings */
  	if (pf->hw.port_info->phy.link_info.link_info &
  	    ICE_AQ_MEDIA_AVAILABLE) {
  		/* not a fatal error if this fails */
  		err = ice_init_phy_user_cfg(pf->hw.port_info);
  		if (err)
  			dev_err(dev, "ice_init_phy_user_cfg failed: %d\n", err);
  
  		if (!test_bit(ICE_FLAG_LINK_DOWN_ON_CLOSE_ENA, pf->flags)) {
  			struct ice_vsi *vsi = ice_get_main_vsi(pf);
  
  			if (vsi)
  				ice_configure_phy(vsi);
  		}
  	} else {
  		set_bit(ICE_FLAG_NO_MEDIA, pf->flags);
  	}
  
  	ice_verify_cacheline_size(pf);
  
  	/* Save wakeup reason register for later use */
  	pf->wakeup_reason = rd32(hw, PFPM_WUS);
  
  	/* check for a power management event */
  	ice_print_wake_reason(pf);
  
  	/* clear wake status, all bits */
  	wr32(hw, PFPM_WUS, U32_MAX);
  
  	/* Disable WoL at init, wait for user to enable */
  	device_set_wakeup_enable(dev, false);
  
  	if (ice_is_safe_mode(pf)) {
  		ice_set_safe_mode_vlan_cfg(pf);
  		goto probe_done;
  	}
  
  	/* initialize DDP driven features */
  
  	/* Note: Flow director init failure is non-fatal to load */
  	if (ice_init_fdir(pf))
  		dev_err(dev, "could not initialize flow director\n");
  
  	/* Note: DCB init failure is non-fatal to load */
  	if (ice_init_pf_dcb(pf, false)) {
  		clear_bit(ICE_FLAG_DCB_CAPABLE, pf->flags);
  		clear_bit(ICE_FLAG_DCB_ENA, pf->flags);
  	} else {
  		ice_cfg_lldp_mib_change(&pf->hw, true);
  	}
  
  	/* print PCI link speed and width */
  	pcie_print_link_status(pf->pdev);
  
  probe_done:
  	/* ready to go, so clear down state bit */
  	clear_bit(__ICE_DOWN, pf->state);
  	return 0;
  
  err_send_version_unroll:
  	ice_vsi_release_all(pf);
  err_alloc_sw_unroll:
  	set_bit(__ICE_SERVICE_DIS, pf->state);
  	set_bit(__ICE_DOWN, pf->state);
  	devm_kfree(dev, pf->first_sw);
  err_msix_misc_unroll:
  	ice_free_irq_msix_misc(pf);
  err_init_interrupt_unroll:
  	ice_clear_interrupt_scheme(pf);
  err_init_vsi_unroll:
  	devm_kfree(dev, pf->vsi);
  err_init_pf_unroll:
  	ice_deinit_pf(pf);
  	ice_devlink_destroy_regions(pf);
  	ice_deinit_hw(hw);
  err_exit_unroll:
  	ice_devlink_unregister(pf);
  	pci_disable_pcie_error_reporting(pdev);
  	pci_disable_device(pdev);
  	return err;
  }
  
  /**
   * ice_set_wake - enable or disable Wake on LAN
   * @pf: pointer to the PF struct
   *
   * Simple helper for WoL control
   */
  static void ice_set_wake(struct ice_pf *pf)
  {
  	struct ice_hw *hw = &pf->hw;
  	bool wol = pf->wol_ena;
  
  	/* clear wake state, otherwise new wake events won't fire */
  	wr32(hw, PFPM_WUS, U32_MAX);
  
  	/* enable / disable APM wake up, no RMW needed */
  	wr32(hw, PFPM_APM, wol ? PFPM_APM_APME_M : 0);
  
  	/* set magic packet filter enabled */
  	wr32(hw, PFPM_WUFC, wol ? PFPM_WUFC_MAG_M : 0);
  }
  
  /**
   * ice_setup_magic_mc_wake - setup device to wake on multicast magic packet
   * @pf: pointer to the PF struct
   *
   * Issue firmware command to enable multicast magic wake, making
   * sure that any locally administered address (LAA) is used for
   * wake, and that PF reset doesn't undo the LAA.
   */
  static void ice_setup_mc_magic_wake(struct ice_pf *pf)
  {
  	struct device *dev = ice_pf_to_dev(pf);
  	struct ice_hw *hw = &pf->hw;
  	enum ice_status status;
  	u8 mac_addr[ETH_ALEN];
  	struct ice_vsi *vsi;
  	u8 flags;
  
  	if (!pf->wol_ena)
  		return;
  
  	vsi = ice_get_main_vsi(pf);
  	if (!vsi)
  		return;
  
  	/* Get current MAC address in case it's an LAA */
  	if (vsi->netdev)
  		ether_addr_copy(mac_addr, vsi->netdev->dev_addr);
  	else
  		ether_addr_copy(mac_addr, vsi->port_info->mac.perm_addr);
  
  	flags = ICE_AQC_MAN_MAC_WR_MC_MAG_EN |
  		ICE_AQC_MAN_MAC_UPDATE_LAA_WOL |
  		ICE_AQC_MAN_MAC_WR_WOL_LAA_PFR_KEEP;
  
  	status = ice_aq_manage_mac_write(hw, mac_addr, flags, NULL);
  	if (status)
  		dev_err(dev, "Failed to enable Multicast Magic Packet wake, err %s aq_err %s\n",
  			ice_stat_str(status),
  			ice_aq_str(hw->adminq.sq_last_status));
  }
  
  /**
   * ice_remove - Device removal routine
   * @pdev: PCI device information struct
   */
  static void ice_remove(struct pci_dev *pdev)
  {
  	struct ice_pf *pf = pci_get_drvdata(pdev);
  	int i;
  
  	if (!pf)
  		return;
  
  	for (i = 0; i < ICE_MAX_RESET_WAIT; i++) {
  		if (!ice_is_reset_in_progress(pf->state))
  			break;
  		msleep(100);
  	}
  
  	if (test_bit(ICE_FLAG_SRIOV_ENA, pf->flags)) {
  		set_bit(__ICE_VF_RESETS_DISABLED, pf->state);
  		ice_free_vfs(pf);
  	}
  
  	set_bit(__ICE_DOWN, pf->state);
  	ice_service_task_stop(pf);
  
  	ice_aq_cancel_waiting_tasks(pf);
  
  	mutex_destroy(&(&pf->hw)->fdir_fltr_lock);
  	if (!ice_is_safe_mode(pf))
  		ice_remove_arfs(pf);
  	ice_setup_mc_magic_wake(pf);
  	ice_vsi_release_all(pf);
  	ice_set_wake(pf);
  	ice_free_irq_msix_misc(pf);
  	ice_for_each_vsi(pf, i) {
  		if (!pf->vsi[i])
  			continue;
  		ice_vsi_free_q_vectors(pf->vsi[i]);
  	}
  	ice_deinit_pf(pf);
  	ice_devlink_destroy_regions(pf);
  	ice_deinit_hw(&pf->hw);
  	ice_devlink_unregister(pf);
  
  	/* Issue a PFR as part of the prescribed driver unload flow.  Do not
  	 * do it via ice_schedule_reset() since there is no need to rebuild
  	 * and the service task is already stopped.
  	 */
  	ice_reset(&pf->hw, ICE_RESET_PFR);
  	pci_wait_for_pending_transaction(pdev);
  	ice_clear_interrupt_scheme(pf);
  	pci_disable_pcie_error_reporting(pdev);
  	pci_disable_device(pdev);
  }
  
  /**
   * ice_shutdown - PCI callback for shutting down device
   * @pdev: PCI device information struct
   */
  static void ice_shutdown(struct pci_dev *pdev)
  {
  	struct ice_pf *pf = pci_get_drvdata(pdev);
  
  	ice_remove(pdev);
  
  	if (system_state == SYSTEM_POWER_OFF) {
  		pci_wake_from_d3(pdev, pf->wol_ena);
  		pci_set_power_state(pdev, PCI_D3hot);
  	}
  }
  
  #ifdef CONFIG_PM
  /**
   * ice_prepare_for_shutdown - prep for PCI shutdown
   * @pf: board private structure
   *
   * Inform or close all dependent features in prep for PCI device shutdown
   */
  static void ice_prepare_for_shutdown(struct ice_pf *pf)
  {
  	struct ice_hw *hw = &pf->hw;
  	u32 v;
  
  	/* Notify VFs of impending reset */
  	if (ice_check_sq_alive(hw, &hw->mailboxq))
  		ice_vc_notify_reset(pf);
  
  	dev_dbg(ice_pf_to_dev(pf), "Tearing down internal switch for shutdown\n");
  
  	/* disable the VSIs and their queues that are not already DOWN */
  	ice_pf_dis_all_vsi(pf, false);
  
  	ice_for_each_vsi(pf, v)
  		if (pf->vsi[v])
  			pf->vsi[v]->vsi_num = 0;
  
  	ice_shutdown_all_ctrlq(hw);
  }
  
  /**
   * ice_reinit_interrupt_scheme - Reinitialize interrupt scheme
   * @pf: board private structure to reinitialize
   *
   * This routine reinitialize interrupt scheme that was cleared during
   * power management suspend callback.
   *
   * This should be called during resume routine to re-allocate the q_vectors
   * and reacquire interrupts.
   */
  static int ice_reinit_interrupt_scheme(struct ice_pf *pf)
  {
  	struct device *dev = ice_pf_to_dev(pf);
  	int ret, v;
  
  	/* Since we clear MSIX flag during suspend, we need to
  	 * set it back during resume...
  	 */
  
  	ret = ice_init_interrupt_scheme(pf);
  	if (ret) {
  		dev_err(dev, "Failed to re-initialize interrupt %d\n", ret);
  		return ret;
  	}
  
  	/* Remap vectors and rings, after successful re-init interrupts */
  	ice_for_each_vsi(pf, v) {
  		if (!pf->vsi[v])
  			continue;
  
  		ret = ice_vsi_alloc_q_vectors(pf->vsi[v]);
  		if (ret)
  			goto err_reinit;
  		ice_vsi_map_rings_to_vectors(pf->vsi[v]);
  	}
  
  	ret = ice_req_irq_msix_misc(pf);
  	if (ret) {
  		dev_err(dev, "Setting up misc vector failed after device suspend %d\n",
  			ret);
  		goto err_reinit;
  	}
  
  	return 0;
  
  err_reinit:
  	while (v--)
  		if (pf->vsi[v])
  			ice_vsi_free_q_vectors(pf->vsi[v]);
  
  	return ret;
  }
  
  /**
   * ice_suspend
   * @dev: generic device information structure
   *
   * Power Management callback to quiesce the device and prepare
   * for D3 transition.
   */
  static int __maybe_unused ice_suspend(struct device *dev)
  {
  	struct pci_dev *pdev = to_pci_dev(dev);
  	struct ice_pf *pf;
  	int disabled, v;
  
  	pf = pci_get_drvdata(pdev);
  
  	if (!ice_pf_state_is_nominal(pf)) {
  		dev_err(dev, "Device is not ready, no need to suspend it\n");
  		return -EBUSY;
  	}
  
  	/* Stop watchdog tasks until resume completion.
  	 * Even though it is most likely that the service task is
  	 * disabled if the device is suspended or down, the service task's
  	 * state is controlled by a different state bit, and we should
  	 * store and honor whatever state that bit is in at this point.
  	 */
  	disabled = ice_service_task_stop(pf);
  
  	/* Already suspended?, then there is nothing to do */
  	if (test_and_set_bit(__ICE_SUSPENDED, pf->state)) {
  		if (!disabled)
  			ice_service_task_restart(pf);
  		return 0;
  	}
  
  	if (test_bit(__ICE_DOWN, pf->state) ||
  	    ice_is_reset_in_progress(pf->state)) {
  		dev_err(dev, "can't suspend device in reset or already down\n");
  		if (!disabled)
  			ice_service_task_restart(pf);
  		return 0;
  	}
  
  	ice_setup_mc_magic_wake(pf);
  
  	ice_prepare_for_shutdown(pf);
  
  	ice_set_wake(pf);
  
  	/* Free vectors, clear the interrupt scheme and release IRQs
  	 * for proper hibernation, especially with large number of CPUs.
  	 * Otherwise hibernation might fail when mapping all the vectors back
  	 * to CPU0.
  	 */
  	ice_free_irq_msix_misc(pf);
  	ice_for_each_vsi(pf, v) {
  		if (!pf->vsi[v])
  			continue;
  		ice_vsi_free_q_vectors(pf->vsi[v]);
  	}
  	ice_free_cpu_rx_rmap(ice_get_main_vsi(pf));
  	ice_clear_interrupt_scheme(pf);
  
  	pci_save_state(pdev);
  	pci_wake_from_d3(pdev, pf->wol_ena);
  	pci_set_power_state(pdev, PCI_D3hot);
  	return 0;
  }
  
  /**
   * ice_resume - PM callback for waking up from D3
   * @dev: generic device information structure
   */
  static int __maybe_unused ice_resume(struct device *dev)
  {
  	struct pci_dev *pdev = to_pci_dev(dev);
  	enum ice_reset_req reset_type;
  	struct ice_pf *pf;
  	struct ice_hw *hw;
  	int ret;
  
  	pci_set_power_state(pdev, PCI_D0);
  	pci_restore_state(pdev);
  	pci_save_state(pdev);
  
  	if (!pci_device_is_present(pdev))
  		return -ENODEV;
  
  	ret = pci_enable_device_mem(pdev);
  	if (ret) {
  		dev_err(dev, "Cannot enable device after suspend\n");
  		return ret;
  	}
  
  	pf = pci_get_drvdata(pdev);
  	hw = &pf->hw;
  
  	pf->wakeup_reason = rd32(hw, PFPM_WUS);
  	ice_print_wake_reason(pf);
  
  	/* We cleared the interrupt scheme when we suspended, so we need to
  	 * restore it now to resume device functionality.
  	 */
  	ret = ice_reinit_interrupt_scheme(pf);
  	if (ret)
  		dev_err(dev, "Cannot restore interrupt scheme: %d\n", ret);
  
  	clear_bit(__ICE_DOWN, pf->state);
  	/* Now perform PF reset and rebuild */
  	reset_type = ICE_RESET_PFR;
  	/* re-enable service task for reset, but allow reset to schedule it */
  	clear_bit(__ICE_SERVICE_DIS, pf->state);
  
  	if (ice_schedule_reset(pf, reset_type))
  		dev_err(dev, "Reset during resume failed.\n");
  
  	clear_bit(__ICE_SUSPENDED, pf->state);
  	ice_service_task_restart(pf);
  
  	/* Restart the service task */
  	mod_timer(&pf->serv_tmr, round_jiffies(jiffies + pf->serv_tmr_period));
  
  	return 0;
  }
  #endif /* CONFIG_PM */
  
  /**
   * ice_pci_err_detected - warning that PCI error has been detected
   * @pdev: PCI device information struct
   * @err: the type of PCI error
   *
   * Called to warn that something happened on the PCI bus and the error handling
   * is in progress.  Allows the driver to gracefully prepare/handle PCI errors.
   */
  static pci_ers_result_t
  ice_pci_err_detected(struct pci_dev *pdev, pci_channel_state_t err)
  {
  	struct ice_pf *pf = pci_get_drvdata(pdev);
  
  	if (!pf) {
  		dev_err(&pdev->dev, "%s: unrecoverable device error %d\n",
  			__func__, err);
  		return PCI_ERS_RESULT_DISCONNECT;
  	}
  
  	if (!test_bit(__ICE_SUSPENDED, pf->state)) {
  		ice_service_task_stop(pf);
  
  		if (!test_bit(__ICE_PREPARED_FOR_RESET, pf->state)) {
  			set_bit(__ICE_PFR_REQ, pf->state);
  			ice_prepare_for_reset(pf);
  		}
  	}
  
  	return PCI_ERS_RESULT_NEED_RESET;
  }
  
  /**
   * ice_pci_err_slot_reset - a PCI slot reset has just happened
   * @pdev: PCI device information struct
   *
   * Called to determine if the driver can recover from the PCI slot reset by
   * using a register read to determine if the device is recoverable.
   */
  static pci_ers_result_t ice_pci_err_slot_reset(struct pci_dev *pdev)
  {
  	struct ice_pf *pf = pci_get_drvdata(pdev);
  	pci_ers_result_t result;
  	int err;
  	u32 reg;
  
  	err = pci_enable_device_mem(pdev);
  	if (err) {
  		dev_err(&pdev->dev, "Cannot re-enable PCI device after reset, error %d\n",
  			err);
  		result = PCI_ERS_RESULT_DISCONNECT;
  	} else {
  		pci_set_master(pdev);
  		pci_restore_state(pdev);
  		pci_save_state(pdev);
  		pci_wake_from_d3(pdev, false);
  
  		/* Check for life */
  		reg = rd32(&pf->hw, GLGEN_RTRIG);
  		if (!reg)
  			result = PCI_ERS_RESULT_RECOVERED;
  		else
  			result = PCI_ERS_RESULT_DISCONNECT;
  	}
  
  	err = pci_aer_clear_nonfatal_status(pdev);
  	if (err)
  		dev_dbg(&pdev->dev, "pci_aer_clear_nonfatal_status() failed, error %d\n",
  			err);
  		/* non-fatal, continue */
  
  	return result;
  }
  
  /**
   * ice_pci_err_resume - restart operations after PCI error recovery
   * @pdev: PCI device information struct
   *
   * Called to allow the driver to bring things back up after PCI error and/or
   * reset recovery have finished
   */
  static void ice_pci_err_resume(struct pci_dev *pdev)
  {
  	struct ice_pf *pf = pci_get_drvdata(pdev);
  
  	if (!pf) {
  		dev_err(&pdev->dev, "%s failed, device is unrecoverable\n",
  			__func__);
  		return;
  	}
  
  	if (test_bit(__ICE_SUSPENDED, pf->state)) {
  		dev_dbg(&pdev->dev, "%s failed to resume normal operations!\n",
  			__func__);
  		return;
  	}
  
  	ice_restore_all_vfs_msi_state(pdev);
  
  	ice_do_reset(pf, ICE_RESET_PFR);
  	ice_service_task_restart(pf);
  	mod_timer(&pf->serv_tmr, round_jiffies(jiffies + pf->serv_tmr_period));
  }
  
  /**
   * ice_pci_err_reset_prepare - prepare device driver for PCI reset
   * @pdev: PCI device information struct
   */
  static void ice_pci_err_reset_prepare(struct pci_dev *pdev)
  {
  	struct ice_pf *pf = pci_get_drvdata(pdev);
  
  	if (!test_bit(__ICE_SUSPENDED, pf->state)) {
  		ice_service_task_stop(pf);
  
  		if (!test_bit(__ICE_PREPARED_FOR_RESET, pf->state)) {
  			set_bit(__ICE_PFR_REQ, pf->state);
  			ice_prepare_for_reset(pf);
  		}
  	}
  }
  
  /**
   * ice_pci_err_reset_done - PCI reset done, device driver reset can begin
   * @pdev: PCI device information struct
   */
  static void ice_pci_err_reset_done(struct pci_dev *pdev)
  {
  	ice_pci_err_resume(pdev);
  }
  
  /* ice_pci_tbl - PCI Device ID Table
   *
   * Wildcard entries (PCI_ANY_ID) should come last
   * Last entry must be all 0s
   *
   * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
   *   Class, Class Mask, private data (not used) }
   */
  static const struct pci_device_id ice_pci_tbl[] = {
  	{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E810C_BACKPLANE), 0 },
  	{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E810C_QSFP), 0 },
  	{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E810C_SFP), 0 },
  	{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E810_XXV_BACKPLANE), 0 },
  	{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E810_XXV_QSFP), 0 },
  	{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E810_XXV_SFP), 0 },
  	{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E823C_BACKPLANE), 0 },
  	{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E823C_QSFP), 0 },
  	{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E823C_SFP), 0 },
  	{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E823C_10G_BASE_T), 0 },
  	{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E823C_SGMII), 0 },
  	{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E822C_BACKPLANE), 0 },
  	{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E822C_QSFP), 0 },
  	{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E822C_SFP), 0 },
  	{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E822C_10G_BASE_T), 0 },
  	{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E822C_SGMII), 0 },
  	{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E822L_BACKPLANE), 0 },
  	{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E822L_SFP), 0 },
  	{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E822L_10G_BASE_T), 0 },
  	{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E822L_SGMII), 0 },
  	{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E823L_BACKPLANE), 0 },
  	{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E823L_SFP), 0 },
  	{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E823L_10G_BASE_T), 0 },
  	{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E823L_1GBE), 0 },
  	{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E823L_QSFP), 0 },
  	/* required last entry */
  	{ 0, }
  };
  MODULE_DEVICE_TABLE(pci, ice_pci_tbl);
  
  static __maybe_unused SIMPLE_DEV_PM_OPS(ice_pm_ops, ice_suspend, ice_resume);
  
  static const struct pci_error_handlers ice_pci_err_handler = {
  	.error_detected = ice_pci_err_detected,
  	.slot_reset = ice_pci_err_slot_reset,
  	.reset_prepare = ice_pci_err_reset_prepare,
  	.reset_done = ice_pci_err_reset_done,
  	.resume = ice_pci_err_resume
  };
  
  static struct pci_driver ice_driver = {
  	.name = KBUILD_MODNAME,
  	.id_table = ice_pci_tbl,
  	.probe = ice_probe,
  	.remove = ice_remove,
  #ifdef CONFIG_PM
  	.driver.pm = &ice_pm_ops,
  #endif /* CONFIG_PM */
  	.shutdown = ice_shutdown,
  	.sriov_configure = ice_sriov_configure,
  	.err_handler = &ice_pci_err_handler
  };
  
  /**
   * ice_module_init - Driver registration routine
   *
   * ice_module_init is the first routine called when the driver is
   * loaded. All it does is register with the PCI subsystem.
   */
  static int __init ice_module_init(void)
  {
  	int status;
  
  	pr_info("%s\n", ice_driver_string);
  	pr_info("%s\n", ice_copyright);
  
  	ice_wq = alloc_workqueue("%s", WQ_MEM_RECLAIM, 0, KBUILD_MODNAME);
  	if (!ice_wq) {
  		pr_err("Failed to create workqueue\n");
  		return -ENOMEM;
  	}
  
  	status = pci_register_driver(&ice_driver);
  	if (status) {
  		pr_err("failed to register PCI driver, err %d\n", status);
  		destroy_workqueue(ice_wq);
  	}
  
  	return status;
  }
  module_init(ice_module_init);
  
  /**
   * ice_module_exit - Driver exit cleanup routine
   *
   * ice_module_exit is called just before the driver is removed
   * from memory.
   */
  static void __exit ice_module_exit(void)
  {
  	pci_unregister_driver(&ice_driver);
  	destroy_workqueue(ice_wq);
  	pr_info("module unloaded\n");
  }
  module_exit(ice_module_exit);
  
  /**
   * ice_set_mac_address - NDO callback to set MAC address
   * @netdev: network interface device structure
   * @pi: pointer to an address structure
   *
   * Returns 0 on success, negative on failure
   */
  static int ice_set_mac_address(struct net_device *netdev, void *pi)
  {
  	struct ice_netdev_priv *np = netdev_priv(netdev);
  	struct ice_vsi *vsi = np->vsi;
  	struct ice_pf *pf = vsi->back;
  	struct ice_hw *hw = &pf->hw;
  	struct sockaddr *addr = pi;
  	enum ice_status status;
  	u8 old_mac[ETH_ALEN];
  	u8 flags = 0;
  	int err = 0;
  	u8 *mac;
  
  	mac = (u8 *)addr->sa_data;
  
  	if (!is_valid_ether_addr(mac))
  		return -EADDRNOTAVAIL;
  
  	if (ether_addr_equal(netdev->dev_addr, mac)) {
  		netdev_dbg(netdev, "already using mac %pM\n", mac);
  		return 0;
  	}
  
  	if (test_bit(__ICE_DOWN, pf->state) ||
  	    ice_is_reset_in_progress(pf->state)) {
  		netdev_err(netdev, "can't set mac %pM. device not ready\n",
  			   mac);
  		return -EBUSY;
  	}
  
  	netif_addr_lock_bh(netdev);
  	ether_addr_copy(old_mac, netdev->dev_addr);
  	/* change the netdev's MAC address */
  	memcpy(netdev->dev_addr, mac, netdev->addr_len);
  	netif_addr_unlock_bh(netdev);
  
  	/* Clean up old MAC filter. Not an error if old filter doesn't exist */
  	status = ice_fltr_remove_mac(vsi, old_mac, ICE_FWD_TO_VSI);
  	if (status && status != ICE_ERR_DOES_NOT_EXIST) {
  		err = -EADDRNOTAVAIL;
  		goto err_update_filters;
  	}
  
  	/* Add filter for new MAC. If filter exists, return success */
  	status = ice_fltr_add_mac(vsi, mac, ICE_FWD_TO_VSI);
  	if (status == ICE_ERR_ALREADY_EXISTS)
  		/* Although this MAC filter is already present in hardware it's
  		 * possible in some cases (e.g. bonding) that dev_addr was
  		 * modified outside of the driver and needs to be restored back
  		 * to this value.
  		 */
  		netdev_dbg(netdev, "filter for MAC %pM already exists\n", mac);
  	else if (status)
  		/* error if the new filter addition failed */
  		err = -EADDRNOTAVAIL;
  
  err_update_filters:
  	if (err) {
  		netdev_err(netdev, "can't set MAC %pM. filter update failed\n",
  			   mac);
  		netif_addr_lock_bh(netdev);
  		ether_addr_copy(netdev->dev_addr, old_mac);
  		netif_addr_unlock_bh(netdev);
  		return err;
  	}
  
  	netdev_dbg(vsi->netdev, "updated MAC address to %pM\n",
  		   netdev->dev_addr);
  
  	/* write new MAC address to the firmware */
  	flags = ICE_AQC_MAN_MAC_UPDATE_LAA_WOL;
  	status = ice_aq_manage_mac_write(hw, mac, flags, NULL);
  	if (status) {
  		netdev_err(netdev, "can't set MAC %pM. write to firmware failed error %s\n",
  			   mac, ice_stat_str(status));
  	}
  	return 0;
  }
  
  /**
   * ice_set_rx_mode - NDO callback to set the netdev filters
   * @netdev: network interface device structure
   */
  static void ice_set_rx_mode(struct net_device *netdev)
  {
  	struct ice_netdev_priv *np = netdev_priv(netdev);
  	struct ice_vsi *vsi = np->vsi;
  
  	if (!vsi)
  		return;
  
  	/* Set the flags to synchronize filters
  	 * ndo_set_rx_mode may be triggered even without a change in netdev
  	 * flags
  	 */
  	set_bit(ICE_VSI_FLAG_UMAC_FLTR_CHANGED, vsi->flags);
  	set_bit(ICE_VSI_FLAG_MMAC_FLTR_CHANGED, vsi->flags);
  	set_bit(ICE_FLAG_FLTR_SYNC, vsi->back->flags);
  
  	/* schedule our worker thread which will take care of
  	 * applying the new filter changes
  	 */
  	ice_service_task_schedule(vsi->back);
  }
  
  /**
   * ice_set_tx_maxrate - NDO callback to set the maximum per-queue bitrate
   * @netdev: network interface device structure
   * @queue_index: Queue ID
   * @maxrate: maximum bandwidth in Mbps
   */
  static int
  ice_set_tx_maxrate(struct net_device *netdev, int queue_index, u32 maxrate)
  {
  	struct ice_netdev_priv *np = netdev_priv(netdev);
  	struct ice_vsi *vsi = np->vsi;
  	enum ice_status status;
  	u16 q_handle;
  	u8 tc;
  
  	/* Validate maxrate requested is within permitted range */
  	if (maxrate && (maxrate > (ICE_SCHED_MAX_BW / 1000))) {
  		netdev_err(netdev, "Invalid max rate %d specified for the queue %d\n",
  			   maxrate, queue_index);
  		return -EINVAL;
  	}
  
  	q_handle = vsi->tx_rings[queue_index]->q_handle;
  	tc = ice_dcb_get_tc(vsi, queue_index);
  
  	/* Set BW back to default, when user set maxrate to 0 */
  	if (!maxrate)
  		status = ice_cfg_q_bw_dflt_lmt(vsi->port_info, vsi->idx, tc,
  					       q_handle, ICE_MAX_BW);
  	else
  		status = ice_cfg_q_bw_lmt(vsi->port_info, vsi->idx, tc,
  					  q_handle, ICE_MAX_BW, maxrate * 1000);
  	if (status) {
  		netdev_err(netdev, "Unable to set Tx max rate, error %s\n",
  			   ice_stat_str(status));
  		return -EIO;
  	}
  
  	return 0;
  }
  
  /**
   * ice_fdb_add - add an entry to the hardware database
   * @ndm: the input from the stack
   * @tb: pointer to array of nladdr (unused)
   * @dev: the net device pointer
   * @addr: the MAC address entry being added
   * @vid: VLAN ID
   * @flags: instructions from stack about fdb operation
   * @extack: netlink extended ack
   */
  static int
  ice_fdb_add(struct ndmsg *ndm, struct nlattr __always_unused *tb[],
  	    struct net_device *dev, const unsigned char *addr, u16 vid,
  	    u16 flags, struct netlink_ext_ack __always_unused *extack)
  {
  	int err;
  
  	if (vid) {
  		netdev_err(dev, "VLANs aren't supported yet for dev_uc|mc_add()\n");
  		return -EINVAL;
  	}
  	if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
  		netdev_err(dev, "FDB only supports static addresses\n");
  		return -EINVAL;
  	}
  
  	if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
  		err = dev_uc_add_excl(dev, addr);
  	else if (is_multicast_ether_addr(addr))
  		err = dev_mc_add_excl(dev, addr);
  	else
  		err = -EINVAL;
  
  	/* Only return duplicate errors if NLM_F_EXCL is set */
  	if (err == -EEXIST && !(flags & NLM_F_EXCL))
  		err = 0;
  
  	return err;
  }
  
  /**
   * ice_fdb_del - delete an entry from the hardware database
   * @ndm: the input from the stack
   * @tb: pointer to array of nladdr (unused)
   * @dev: the net device pointer
   * @addr: the MAC address entry being added
   * @vid: VLAN ID
   */
  static int
  ice_fdb_del(struct ndmsg *ndm, __always_unused struct nlattr *tb[],
  	    struct net_device *dev, const unsigned char *addr,
  	    __always_unused u16 vid)
  {
  	int err;
  
  	if (ndm->ndm_state & NUD_PERMANENT) {
  		netdev_err(dev, "FDB only supports static addresses\n");
  		return -EINVAL;
  	}
  
  	if (is_unicast_ether_addr(addr))
  		err = dev_uc_del(dev, addr);
  	else if (is_multicast_ether_addr(addr))
  		err = dev_mc_del(dev, addr);
  	else
  		err = -EINVAL;
  
  	return err;
  }
  
  /**
   * ice_set_features - set the netdev feature flags
   * @netdev: ptr to the netdev being adjusted
   * @features: the feature set that the stack is suggesting
   */
  static int
  ice_set_features(struct net_device *netdev, netdev_features_t features)
  {
  	struct ice_netdev_priv *np = netdev_priv(netdev);
  	struct ice_vsi *vsi = np->vsi;
  	struct ice_pf *pf = vsi->back;
  	int ret = 0;
  
  	/* Don't set any netdev advanced features with device in Safe Mode */
  	if (ice_is_safe_mode(vsi->back)) {
  		dev_err(ice_pf_to_dev(vsi->back), "Device is in Safe Mode - not enabling advanced netdev features\n");
  		return ret;
  	}
  
  	/* Do not change setting during reset */
  	if (ice_is_reset_in_progress(pf->state)) {
  		dev_err(ice_pf_to_dev(vsi->back), "Device is resetting, changing advanced netdev features temporarily unavailable.\n");
  		return -EBUSY;
  	}
  
  	/* Multiple features can be changed in one call so keep features in
  	 * separate if/else statements to guarantee each feature is checked
  	 */
  	if (features & NETIF_F_RXHASH && !(netdev->features & NETIF_F_RXHASH))
  		ret = ice_vsi_manage_rss_lut(vsi, true);
  	else if (!(features & NETIF_F_RXHASH) &&
  		 netdev->features & NETIF_F_RXHASH)
  		ret = ice_vsi_manage_rss_lut(vsi, false);
  
  	if ((features & NETIF_F_HW_VLAN_CTAG_RX) &&
  	    !(netdev->features & NETIF_F_HW_VLAN_CTAG_RX))
  		ret = ice_vsi_manage_vlan_stripping(vsi, true);
  	else if (!(features & NETIF_F_HW_VLAN_CTAG_RX) &&
  		 (netdev->features & NETIF_F_HW_VLAN_CTAG_RX))
  		ret = ice_vsi_manage_vlan_stripping(vsi, false);
  
  	if ((features & NETIF_F_HW_VLAN_CTAG_TX) &&
  	    !(netdev->features & NETIF_F_HW_VLAN_CTAG_TX))
  		ret = ice_vsi_manage_vlan_insertion(vsi);
  	else if (!(features & NETIF_F_HW_VLAN_CTAG_TX) &&
  		 (netdev->features & NETIF_F_HW_VLAN_CTAG_TX))
  		ret = ice_vsi_manage_vlan_insertion(vsi);
  
  	if ((features & NETIF_F_HW_VLAN_CTAG_FILTER) &&
  	    !(netdev->features & NETIF_F_HW_VLAN_CTAG_FILTER))
  		ret = ice_cfg_vlan_pruning(vsi, true, false);
  	else if (!(features & NETIF_F_HW_VLAN_CTAG_FILTER) &&
  		 (netdev->features & NETIF_F_HW_VLAN_CTAG_FILTER))
  		ret = ice_cfg_vlan_pruning(vsi, false, false);
  
  	if ((features & NETIF_F_NTUPLE) &&
  	    !(netdev->features & NETIF_F_NTUPLE)) {
  		ice_vsi_manage_fdir(vsi, true);
  		ice_init_arfs(vsi);
  	} else if (!(features & NETIF_F_NTUPLE) &&
  		 (netdev->features & NETIF_F_NTUPLE)) {
  		ice_vsi_manage_fdir(vsi, false);
  		ice_clear_arfs(vsi);
  	}
  
  	return ret;
  }
  
  /**
   * ice_vsi_vlan_setup - Setup VLAN offload properties on a VSI
   * @vsi: VSI to setup VLAN properties for
   */
  static int ice_vsi_vlan_setup(struct ice_vsi *vsi)
  {
  	int ret = 0;
  
  	if (vsi->netdev->features & NETIF_F_HW_VLAN_CTAG_RX)
  		ret = ice_vsi_manage_vlan_stripping(vsi, true);
  	if (vsi->netdev->features & NETIF_F_HW_VLAN_CTAG_TX)
  		ret = ice_vsi_manage_vlan_insertion(vsi);
  
  	return ret;
  }
  
  /**
   * ice_vsi_cfg - Setup the VSI
   * @vsi: the VSI being configured
   *
   * Return 0 on success and negative value on error
   */
  int ice_vsi_cfg(struct ice_vsi *vsi)
  {
  	int err;
  
  	if (vsi->netdev) {
  		ice_set_rx_mode(vsi->netdev);
  
  		err = ice_vsi_vlan_setup(vsi);
  
  		if (err)
  			return err;
  	}
  	ice_vsi_cfg_dcb_rings(vsi);
  
  	err = ice_vsi_cfg_lan_txqs(vsi);
  	if (!err && ice_is_xdp_ena_vsi(vsi))
  		err = ice_vsi_cfg_xdp_txqs(vsi);
  	if (!err)
  		err = ice_vsi_cfg_rxqs(vsi);
  
  	return err;
  }
  
  /**
   * ice_napi_enable_all - Enable NAPI for all q_vectors in the VSI
   * @vsi: the VSI being configured
   */
  static void ice_napi_enable_all(struct ice_vsi *vsi)
  {
  	int q_idx;
  
  	if (!vsi->netdev)
  		return;
  
  	ice_for_each_q_vector(vsi, q_idx) {
  		struct ice_q_vector *q_vector = vsi->q_vectors[q_idx];
  
  		if (q_vector->rx.ring || q_vector->tx.ring)
  			napi_enable(&q_vector->napi);
  	}
  }
  
  /**
   * ice_up_complete - Finish the last steps of bringing up a connection
   * @vsi: The VSI being configured
   *
   * Return 0 on success and negative value on error
   */
  static int ice_up_complete(struct ice_vsi *vsi)
  {
  	struct ice_pf *pf = vsi->back;
  	int err;
  
  	ice_vsi_cfg_msix(vsi);
  
  	/* Enable only Rx rings, Tx rings were enabled by the FW when the
  	 * Tx queue group list was configured and the context bits were
  	 * programmed using ice_vsi_cfg_txqs
  	 */
  	err = ice_vsi_start_all_rx_rings(vsi);
  	if (err)
  		return err;
  
  	clear_bit(__ICE_DOWN, vsi->state);
  	ice_napi_enable_all(vsi);
  	ice_vsi_ena_irq(vsi);
  
  	if (vsi->port_info &&
  	    (vsi->port_info->phy.link_info.link_info & ICE_AQ_LINK_UP) &&
  	    vsi->netdev) {
  		ice_print_link_msg(vsi, true);
  		netif_tx_start_all_queues(vsi->netdev);
  		netif_carrier_on(vsi->netdev);
  	}
  
  	ice_service_task_schedule(pf);
  
  	return 0;
  }
  
  /**
   * ice_up - Bring the connection back up after being down
   * @vsi: VSI being configured
   */
  int ice_up(struct ice_vsi *vsi)
  {
  	int err;
  
  	err = ice_vsi_cfg(vsi);
  	if (!err)
  		err = ice_up_complete(vsi);
  
  	return err;
  }
  
  /**
   * ice_fetch_u64_stats_per_ring - get packets and bytes stats per ring
   * @ring: Tx or Rx ring to read stats from
   * @pkts: packets stats counter
   * @bytes: bytes stats counter
   *
   * This function fetches stats from the ring considering the atomic operations
   * that needs to be performed to read u64 values in 32 bit machine.
   */
  static void
  ice_fetch_u64_stats_per_ring(struct ice_ring *ring, u64 *pkts, u64 *bytes)
  {
  	unsigned int start;
  	*pkts = 0;
  	*bytes = 0;
  
  	if (!ring)
  		return;
  	do {
  		start = u64_stats_fetch_begin_irq(&ring->syncp);
  		*pkts = ring->stats.pkts;
  		*bytes = ring->stats.bytes;
  	} while (u64_stats_fetch_retry_irq(&ring->syncp, start));
  }
  
  /**
   * ice_update_vsi_tx_ring_stats - Update VSI Tx ring stats counters
   * @vsi: the VSI to be updated
   * @rings: rings to work on
   * @count: number of rings
   */
  static void
  ice_update_vsi_tx_ring_stats(struct ice_vsi *vsi, struct ice_ring **rings,
  			     u16 count)
  {
  	struct rtnl_link_stats64 *vsi_stats = &vsi->net_stats;
  	u16 i;
  
  	for (i = 0; i < count; i++) {
  		struct ice_ring *ring;
  		u64 pkts, bytes;
  
  		ring = READ_ONCE(rings[i]);
  		ice_fetch_u64_stats_per_ring(ring, &pkts, &bytes);
  		vsi_stats->tx_packets += pkts;
  		vsi_stats->tx_bytes += bytes;
  		vsi->tx_restart += ring->tx_stats.restart_q;
  		vsi->tx_busy += ring->tx_stats.tx_busy;
  		vsi->tx_linearize += ring->tx_stats.tx_linearize;
  	}
  }
  
  /**
   * ice_update_vsi_ring_stats - Update VSI stats counters
   * @vsi: the VSI to be updated
   */
  static void ice_update_vsi_ring_stats(struct ice_vsi *vsi)
  {
  	struct rtnl_link_stats64 *vsi_stats = &vsi->net_stats;
  	struct ice_ring *ring;
  	u64 pkts, bytes;
  	int i;
  
  	/* reset netdev stats */
  	vsi_stats->tx_packets = 0;
  	vsi_stats->tx_bytes = 0;
  	vsi_stats->rx_packets = 0;
  	vsi_stats->rx_bytes = 0;
  
  	/* reset non-netdev (extended) stats */
  	vsi->tx_restart = 0;
  	vsi->tx_busy = 0;
  	vsi->tx_linearize = 0;
  	vsi->rx_buf_failed = 0;
  	vsi->rx_page_failed = 0;
  	vsi->rx_gro_dropped = 0;
  
  	rcu_read_lock();
  
  	/* update Tx rings counters */
  	ice_update_vsi_tx_ring_stats(vsi, vsi->tx_rings, vsi->num_txq);
  
  	/* update Rx rings counters */
  	ice_for_each_rxq(vsi, i) {
  		ring = READ_ONCE(vsi->rx_rings[i]);
  		ice_fetch_u64_stats_per_ring(ring, &pkts, &bytes);
  		vsi_stats->rx_packets += pkts;
  		vsi_stats->rx_bytes += bytes;
  		vsi->rx_buf_failed += ring->rx_stats.alloc_buf_failed;
  		vsi->rx_page_failed += ring->rx_stats.alloc_page_failed;
  		vsi->rx_gro_dropped += ring->rx_stats.gro_dropped;
  	}
  
  	/* update XDP Tx rings counters */
  	if (ice_is_xdp_ena_vsi(vsi))
  		ice_update_vsi_tx_ring_stats(vsi, vsi->xdp_rings,
  					     vsi->num_xdp_txq);
  
  	rcu_read_unlock();
  }
  
  /**
   * ice_update_vsi_stats - Update VSI stats counters
   * @vsi: the VSI to be updated
   */
  void ice_update_vsi_stats(struct ice_vsi *vsi)
  {
  	struct rtnl_link_stats64 *cur_ns = &vsi->net_stats;
  	struct ice_eth_stats *cur_es = &vsi->eth_stats;
  	struct ice_pf *pf = vsi->back;
  
  	if (test_bit(__ICE_DOWN, vsi->state) ||
  	    test_bit(__ICE_CFG_BUSY, pf->state))
  		return;
  
  	/* get stats as recorded by Tx/Rx rings */
  	ice_update_vsi_ring_stats(vsi);
  
  	/* get VSI stats as recorded by the hardware */
  	ice_update_eth_stats(vsi);
  
  	cur_ns->tx_errors = cur_es->tx_errors;
  	cur_ns->rx_dropped = cur_es->rx_discards + vsi->rx_gro_dropped;
  	cur_ns->tx_dropped = cur_es->tx_discards;
  	cur_ns->multicast = cur_es->rx_multicast;
  
  	/* update some more netdev stats if this is main VSI */
  	if (vsi->type == ICE_VSI_PF) {
  		cur_ns->rx_crc_errors = pf->stats.crc_errors;
  		cur_ns->rx_errors = pf->stats.crc_errors +
  				    pf->stats.illegal_bytes +
  				    pf->stats.rx_len_errors +
  				    pf->stats.rx_undersize +
  				    pf->hw_csum_rx_error +
  				    pf->stats.rx_jabber +
  				    pf->stats.rx_fragments +
  				    pf->stats.rx_oversize;
  		cur_ns->rx_length_errors = pf->stats.rx_len_errors;
  		/* record drops from the port level */
  		cur_ns->rx_missed_errors = pf->stats.eth.rx_discards;
  	}
  }
  
  /**
   * ice_update_pf_stats - Update PF port stats counters
   * @pf: PF whose stats needs to be updated
   */
  void ice_update_pf_stats(struct ice_pf *pf)
  {
  	struct ice_hw_port_stats *prev_ps, *cur_ps;
  	struct ice_hw *hw = &pf->hw;
  	u16 fd_ctr_base;
  	u8 port;
  
  	port = hw->port_info->lport;
  	prev_ps = &pf->stats_prev;
  	cur_ps = &pf->stats;
  
  	ice_stat_update40(hw, GLPRT_GORCL(port), pf->stat_prev_loaded,
  			  &prev_ps->eth.rx_bytes,
  			  &cur_ps->eth.rx_bytes);
  
  	ice_stat_update40(hw, GLPRT_UPRCL(port), pf->stat_prev_loaded,
  			  &prev_ps->eth.rx_unicast,
  			  &cur_ps->eth.rx_unicast);
  
  	ice_stat_update40(hw, GLPRT_MPRCL(port), pf->stat_prev_loaded,
  			  &prev_ps->eth.rx_multicast,
  			  &cur_ps->eth.rx_multicast);
  
  	ice_stat_update40(hw, GLPRT_BPRCL(port), pf->stat_prev_loaded,
  			  &prev_ps->eth.rx_broadcast,
  			  &cur_ps->eth.rx_broadcast);
  
  	ice_stat_update32(hw, PRTRPB_RDPC, pf->stat_prev_loaded,
  			  &prev_ps->eth.rx_discards,
  			  &cur_ps->eth.rx_discards);
  
  	ice_stat_update40(hw, GLPRT_GOTCL(port), pf->stat_prev_loaded,
  			  &prev_ps->eth.tx_bytes,
  			  &cur_ps->eth.tx_bytes);
  
  	ice_stat_update40(hw, GLPRT_UPTCL(port), pf->stat_prev_loaded,
  			  &prev_ps->eth.tx_unicast,
  			  &cur_ps->eth.tx_unicast);
  
  	ice_stat_update40(hw, GLPRT_MPTCL(port), pf->stat_prev_loaded,
  			  &prev_ps->eth.tx_multicast,
  			  &cur_ps->eth.tx_multicast);
  
  	ice_stat_update40(hw, GLPRT_BPTCL(port), pf->stat_prev_loaded,
  			  &prev_ps->eth.tx_broadcast,
  			  &cur_ps->eth.tx_broadcast);
  
  	ice_stat_update32(hw, GLPRT_TDOLD(port), pf->stat_prev_loaded,
  			  &prev_ps->tx_dropped_link_down,
  			  &cur_ps->tx_dropped_link_down);
  
  	ice_stat_update40(hw, GLPRT_PRC64L(port), pf->stat_prev_loaded,
  			  &prev_ps->rx_size_64, &cur_ps->rx_size_64);
  
  	ice_stat_update40(hw, GLPRT_PRC127L(port), pf->stat_prev_loaded,
  			  &prev_ps->rx_size_127, &cur_ps->rx_size_127);
  
  	ice_stat_update40(hw, GLPRT_PRC255L(port), pf->stat_prev_loaded,
  			  &prev_ps->rx_size_255, &cur_ps->rx_size_255);
  
  	ice_stat_update40(hw, GLPRT_PRC511L(port), pf->stat_prev_loaded,
  			  &prev_ps->rx_size_511, &cur_ps->rx_size_511);
  
  	ice_stat_update40(hw, GLPRT_PRC1023L(port), pf->stat_prev_loaded,
  			  &prev_ps->rx_size_1023, &cur_ps->rx_size_1023);
  
  	ice_stat_update40(hw, GLPRT_PRC1522L(port), pf->stat_prev_loaded,
  			  &prev_ps->rx_size_1522, &cur_ps->rx_size_1522);
  
  	ice_stat_update40(hw, GLPRT_PRC9522L(port), pf->stat_prev_loaded,
  			  &prev_ps->rx_size_big, &cur_ps->rx_size_big);
  
  	ice_stat_update40(hw, GLPRT_PTC64L(port), pf->stat_prev_loaded,
  			  &prev_ps->tx_size_64, &cur_ps->tx_size_64);
  
  	ice_stat_update40(hw, GLPRT_PTC127L(port), pf->stat_prev_loaded,
  			  &prev_ps->tx_size_127, &cur_ps->tx_size_127);
  
  	ice_stat_update40(hw, GLPRT_PTC255L(port), pf->stat_prev_loaded,
  			  &prev_ps->tx_size_255, &cur_ps->tx_size_255);
  
  	ice_stat_update40(hw, GLPRT_PTC511L(port), pf->stat_prev_loaded,
  			  &prev_ps->tx_size_511, &cur_ps->tx_size_511);
  
  	ice_stat_update40(hw, GLPRT_PTC1023L(port), pf->stat_prev_loaded,
  			  &prev_ps->tx_size_1023, &cur_ps->tx_size_1023);
  
  	ice_stat_update40(hw, GLPRT_PTC1522L(port), pf->stat_prev_loaded,
  			  &prev_ps->tx_size_1522, &cur_ps->tx_size_1522);
  
  	ice_stat_update40(hw, GLPRT_PTC9522L(port), pf->stat_prev_loaded,
  			  &prev_ps->tx_size_big, &cur_ps->tx_size_big);
  
  	fd_ctr_base = hw->fd_ctr_base;
  
  	ice_stat_update40(hw,
  			  GLSTAT_FD_CNT0L(ICE_FD_SB_STAT_IDX(fd_ctr_base)),
  			  pf->stat_prev_loaded, &prev_ps->fd_sb_match,
  			  &cur_ps->fd_sb_match);
  	ice_stat_update32(hw, GLPRT_LXONRXC(port), pf->stat_prev_loaded,
  			  &prev_ps->link_xon_rx, &cur_ps->link_xon_rx);
  
  	ice_stat_update32(hw, GLPRT_LXOFFRXC(port), pf->stat_prev_loaded,
  			  &prev_ps->link_xoff_rx, &cur_ps->link_xoff_rx);
  
  	ice_stat_update32(hw, GLPRT_LXONTXC(port), pf->stat_prev_loaded,
  			  &prev_ps->link_xon_tx, &cur_ps->link_xon_tx);
  
  	ice_stat_update32(hw, GLPRT_LXOFFTXC(port), pf->stat_prev_loaded,
  			  &prev_ps->link_xoff_tx, &cur_ps->link_xoff_tx);
  
  	ice_update_dcb_stats(pf);
  
  	ice_stat_update32(hw, GLPRT_CRCERRS(port), pf->stat_prev_loaded,
  			  &prev_ps->crc_errors, &cur_ps->crc_errors);
  
  	ice_stat_update32(hw, GLPRT_ILLERRC(port), pf->stat_prev_loaded,
  			  &prev_ps->illegal_bytes, &cur_ps->illegal_bytes);
  
  	ice_stat_update32(hw, GLPRT_MLFC(port), pf->stat_prev_loaded,
  			  &prev_ps->mac_local_faults,
  			  &cur_ps->mac_local_faults);
  
  	ice_stat_update32(hw, GLPRT_MRFC(port), pf->stat_prev_loaded,
  			  &prev_ps->mac_remote_faults,
  			  &cur_ps->mac_remote_faults);
  
  	ice_stat_update32(hw, GLPRT_RLEC(port), pf->stat_prev_loaded,
  			  &prev_ps->rx_len_errors, &cur_ps->rx_len_errors);
  
  	ice_stat_update32(hw, GLPRT_RUC(port), pf->stat_prev_loaded,
  			  &prev_ps->rx_undersize, &cur_ps->rx_undersize);
  
  	ice_stat_update32(hw, GLPRT_RFC(port), pf->stat_prev_loaded,
  			  &prev_ps->rx_fragments, &cur_ps->rx_fragments);
  
  	ice_stat_update32(hw, GLPRT_ROC(port), pf->stat_prev_loaded,
  			  &prev_ps->rx_oversize, &cur_ps->rx_oversize);
  
  	ice_stat_update32(hw, GLPRT_RJC(port), pf->stat_prev_loaded,
  			  &prev_ps->rx_jabber, &cur_ps->rx_jabber);
  
  	cur_ps->fd_sb_status = test_bit(ICE_FLAG_FD_ENA, pf->flags) ? 1 : 0;
  
  	pf->stat_prev_loaded = true;
  }
  
  /**
   * ice_get_stats64 - get statistics for network device structure
   * @netdev: network interface device structure
   * @stats: main device statistics structure
   */
  static
  void ice_get_stats64(struct net_device *netdev, struct rtnl_link_stats64 *stats)
  {
  	struct ice_netdev_priv *np = netdev_priv(netdev);
  	struct rtnl_link_stats64 *vsi_stats;
  	struct ice_vsi *vsi = np->vsi;
  
  	vsi_stats = &vsi->net_stats;
  
  	if (!vsi->num_txq || !vsi->num_rxq)
  		return;
  
  	/* netdev packet/byte stats come from ring counter. These are obtained
  	 * by summing up ring counters (done by ice_update_vsi_ring_stats).
  	 * But, only call the update routine and read the registers if VSI is
  	 * not down.
  	 */
  	if (!test_bit(__ICE_DOWN, vsi->state))
  		ice_update_vsi_ring_stats(vsi);
  	stats->tx_packets = vsi_stats->tx_packets;
  	stats->tx_bytes = vsi_stats->tx_bytes;
  	stats->rx_packets = vsi_stats->rx_packets;
  	stats->rx_bytes = vsi_stats->rx_bytes;
  
  	/* The rest of the stats can be read from the hardware but instead we
  	 * just return values that the watchdog task has already obtained from
  	 * the hardware.
  	 */
  	stats->multicast = vsi_stats->multicast;
  	stats->tx_errors = vsi_stats->tx_errors;
  	stats->tx_dropped = vsi_stats->tx_dropped;
  	stats->rx_errors = vsi_stats->rx_errors;
  	stats->rx_dropped = vsi_stats->rx_dropped;
  	stats->rx_crc_errors = vsi_stats->rx_crc_errors;
  	stats->rx_length_errors = vsi_stats->rx_length_errors;
  }
  
  /**
   * ice_napi_disable_all - Disable NAPI for all q_vectors in the VSI
   * @vsi: VSI having NAPI disabled
   */
  static void ice_napi_disable_all(struct ice_vsi *vsi)
  {
  	int q_idx;
  
  	if (!vsi->netdev)
  		return;
  
  	ice_for_each_q_vector(vsi, q_idx) {
  		struct ice_q_vector *q_vector = vsi->q_vectors[q_idx];
  
  		if (q_vector->rx.ring || q_vector->tx.ring)
  			napi_disable(&q_vector->napi);
  	}
  }
  
  /**
   * ice_down - Shutdown the connection
   * @vsi: The VSI being stopped
   */
  int ice_down(struct ice_vsi *vsi)
  {
  	int i, tx_err, rx_err, link_err = 0;
  
  	/* Caller of this function is expected to set the
  	 * vsi->state __ICE_DOWN bit
  	 */
  	if (vsi->netdev) {
  		netif_carrier_off(vsi->netdev);
  		netif_tx_disable(vsi->netdev);
  	}
  
  	ice_vsi_dis_irq(vsi);
  
  	tx_err = ice_vsi_stop_lan_tx_rings(vsi, ICE_NO_RESET, 0);
  	if (tx_err)
  		netdev_err(vsi->netdev, "Failed stop Tx rings, VSI %d error %d\n",
  			   vsi->vsi_num, tx_err);
  	if (!tx_err && ice_is_xdp_ena_vsi(vsi)) {
  		tx_err = ice_vsi_stop_xdp_tx_rings(vsi);
  		if (tx_err)
  			netdev_err(vsi->netdev, "Failed stop XDP rings, VSI %d error %d\n",
  				   vsi->vsi_num, tx_err);
  	}
  
  	rx_err = ice_vsi_stop_all_rx_rings(vsi);
  	if (rx_err)
  		netdev_err(vsi->netdev, "Failed stop Rx rings, VSI %d error %d\n",
  			   vsi->vsi_num, rx_err);
  
  	ice_napi_disable_all(vsi);
  
  	if (test_bit(ICE_FLAG_LINK_DOWN_ON_CLOSE_ENA, vsi->back->flags)) {
  		link_err = ice_force_phys_link_state(vsi, false);
  		if (link_err)
  			netdev_err(vsi->netdev, "Failed to set physical link down, VSI %d error %d\n",
  				   vsi->vsi_num, link_err);
  	}
  
  	ice_for_each_txq(vsi, i)
  		ice_clean_tx_ring(vsi->tx_rings[i]);
  
  	ice_for_each_rxq(vsi, i)
  		ice_clean_rx_ring(vsi->rx_rings[i]);
  
  	if (tx_err || rx_err || link_err) {
  		netdev_err(vsi->netdev, "Failed to close VSI 0x%04X on switch 0x%04X\n",
  			   vsi->vsi_num, vsi->vsw->sw_id);
  		return -EIO;
  	}
  
  	return 0;
  }
  
  /**
   * ice_vsi_setup_tx_rings - Allocate VSI Tx queue resources
   * @vsi: VSI having resources allocated
   *
   * Return 0 on success, negative on failure
   */
  int ice_vsi_setup_tx_rings(struct ice_vsi *vsi)
  {
  	int i, err = 0;
  
  	if (!vsi->num_txq) {
  		dev_err(ice_pf_to_dev(vsi->back), "VSI %d has 0 Tx queues\n",
  			vsi->vsi_num);
  		return -EINVAL;
  	}
  
  	ice_for_each_txq(vsi, i) {
  		struct ice_ring *ring = vsi->tx_rings[i];
  
  		if (!ring)
  			return -EINVAL;
  
  		ring->netdev = vsi->netdev;
  		err = ice_setup_tx_ring(ring);
  		if (err)
  			break;
  	}
  
  	return err;
  }
  
  /**
   * ice_vsi_setup_rx_rings - Allocate VSI Rx queue resources
   * @vsi: VSI having resources allocated
   *
   * Return 0 on success, negative on failure
   */
  int ice_vsi_setup_rx_rings(struct ice_vsi *vsi)
  {
  	int i, err = 0;
  
  	if (!vsi->num_rxq) {
  		dev_err(ice_pf_to_dev(vsi->back), "VSI %d has 0 Rx queues\n",
  			vsi->vsi_num);
  		return -EINVAL;
  	}
  
  	ice_for_each_rxq(vsi, i) {
  		struct ice_ring *ring = vsi->rx_rings[i];
  
  		if (!ring)
  			return -EINVAL;
  
  		ring->netdev = vsi->netdev;
  		err = ice_setup_rx_ring(ring);
  		if (err)
  			break;
  	}
  
  	return err;
  }
  
  /**
   * ice_vsi_open_ctrl - open control VSI for use
   * @vsi: the VSI to open
   *
   * Initialization of the Control VSI
   *
   * Returns 0 on success, negative value on error
   */
  int ice_vsi_open_ctrl(struct ice_vsi *vsi)
  {
  	char int_name[ICE_INT_NAME_STR_LEN];
  	struct ice_pf *pf = vsi->back;
  	struct device *dev;
  	int err;
  
  	dev = ice_pf_to_dev(pf);
  	/* allocate descriptors */
  	err = ice_vsi_setup_tx_rings(vsi);
  	if (err)
  		goto err_setup_tx;
  
  	err = ice_vsi_setup_rx_rings(vsi);
  	if (err)
  		goto err_setup_rx;
  
  	err = ice_vsi_cfg(vsi);
  	if (err)
  		goto err_setup_rx;
  
  	snprintf(int_name, sizeof(int_name) - 1, "%s-%s:ctrl",
  		 dev_driver_string(dev), dev_name(dev));
  	err = ice_vsi_req_irq_msix(vsi, int_name);
  	if (err)
  		goto err_setup_rx;
  
  	ice_vsi_cfg_msix(vsi);
  
  	err = ice_vsi_start_all_rx_rings(vsi);
  	if (err)
  		goto err_up_complete;
  
  	clear_bit(__ICE_DOWN, vsi->state);
  	ice_vsi_ena_irq(vsi);
  
  	return 0;
  
  err_up_complete:
  	ice_down(vsi);
  err_setup_rx:
  	ice_vsi_free_rx_rings(vsi);
  err_setup_tx:
  	ice_vsi_free_tx_rings(vsi);
  
  	return err;
  }
  
  /**
   * ice_vsi_open - Called when a network interface is made active
   * @vsi: the VSI to open
   *
   * Initialization of the VSI
   *
   * Returns 0 on success, negative value on error
   */
  static int ice_vsi_open(struct ice_vsi *vsi)
  {
  	char int_name[ICE_INT_NAME_STR_LEN];
  	struct ice_pf *pf = vsi->back;
  	int err;
  
  	/* allocate descriptors */
  	err = ice_vsi_setup_tx_rings(vsi);
  	if (err)
  		goto err_setup_tx;
  
  	err = ice_vsi_setup_rx_rings(vsi);
  	if (err)
  		goto err_setup_rx;
  
  	err = ice_vsi_cfg(vsi);
  	if (err)
  		goto err_setup_rx;
  
  	snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
  		 dev_driver_string(ice_pf_to_dev(pf)), vsi->netdev->name);
  	err = ice_vsi_req_irq_msix(vsi, int_name);
  	if (err)
  		goto err_setup_rx;
  
  	/* Notify the stack of the actual queue counts. */
  	err = netif_set_real_num_tx_queues(vsi->netdev, vsi->num_txq);
  	if (err)
  		goto err_set_qs;
  
  	err = netif_set_real_num_rx_queues(vsi->netdev, vsi->num_rxq);
  	if (err)
  		goto err_set_qs;
  
  	err = ice_up_complete(vsi);
  	if (err)
  		goto err_up_complete;
  
  	return 0;
  
  err_up_complete:
  	ice_down(vsi);
  err_set_qs:
  	ice_vsi_free_irq(vsi);
  err_setup_rx:
  	ice_vsi_free_rx_rings(vsi);
  err_setup_tx:
  	ice_vsi_free_tx_rings(vsi);
  
  	return err;
  }
  
  /**
   * ice_vsi_release_all - Delete all VSIs
   * @pf: PF from which all VSIs are being removed
   */
  static void ice_vsi_release_all(struct ice_pf *pf)
  {
  	int err, i;
  
  	if (!pf->vsi)
  		return;
  
  	ice_for_each_vsi(pf, i) {
  		if (!pf->vsi[i])
  			continue;
  
  		err = ice_vsi_release(pf->vsi[i]);
  		if (err)
  			dev_dbg(ice_pf_to_dev(pf), "Failed to release pf->vsi[%d], err %d, vsi_num = %d\n",
  				i, err, pf->vsi[i]->vsi_num);
  	}
  }
  
  /**
   * ice_vsi_rebuild_by_type - Rebuild VSI of a given type
   * @pf: pointer to the PF instance
   * @type: VSI type to rebuild
   *
   * Iterates through the pf->vsi array and rebuilds VSIs of the requested type
   */
  static int ice_vsi_rebuild_by_type(struct ice_pf *pf, enum ice_vsi_type type)
  {
  	struct device *dev = ice_pf_to_dev(pf);
  	enum ice_status status;
  	int i, err;
  
  	ice_for_each_vsi(pf, i) {
  		struct ice_vsi *vsi = pf->vsi[i];
  
  		if (!vsi || vsi->type != type)
  			continue;
  
  		/* rebuild the VSI */
  		err = ice_vsi_rebuild(vsi, true);
  		if (err) {
  			dev_err(dev, "rebuild VSI failed, err %d, VSI index %d, type %s\n",
  				err, vsi->idx, ice_vsi_type_str(type));
  			return err;
  		}
  
  		/* replay filters for the VSI */
  		status = ice_replay_vsi(&pf->hw, vsi->idx);
  		if (status) {
  			dev_err(dev, "replay VSI failed, status %s, VSI index %d, type %s\n",
  				ice_stat_str(status), vsi->idx,
  				ice_vsi_type_str(type));
  			return -EIO;
  		}
  
  		/* Re-map HW VSI number, using VSI handle that has been
  		 * previously validated in ice_replay_vsi() call above
  		 */
  		vsi->vsi_num = ice_get_hw_vsi_num(&pf->hw, vsi->idx);
  
  		/* enable the VSI */
  		err = ice_ena_vsi(vsi, false);
  		if (err) {
  			dev_err(dev, "enable VSI failed, err %d, VSI index %d, type %s\n",
  				err, vsi->idx, ice_vsi_type_str(type));
  			return err;
  		}
  
  		dev_info(dev, "VSI rebuilt. VSI index %d, type %s\n", vsi->idx,
  			 ice_vsi_type_str(type));
  	}
  
  	return 0;
  }
  
  /**
   * ice_update_pf_netdev_link - Update PF netdev link status
   * @pf: pointer to the PF instance
   */
  static void ice_update_pf_netdev_link(struct ice_pf *pf)
  {
  	bool link_up;
  	int i;
  
  	ice_for_each_vsi(pf, i) {
  		struct ice_vsi *vsi = pf->vsi[i];
  
  		if (!vsi || vsi->type != ICE_VSI_PF)
  			return;
  
  		ice_get_link_status(pf->vsi[i]->port_info, &link_up);
  		if (link_up) {
  			netif_carrier_on(pf->vsi[i]->netdev);
  			netif_tx_wake_all_queues(pf->vsi[i]->netdev);
  		} else {
  			netif_carrier_off(pf->vsi[i]->netdev);
  			netif_tx_stop_all_queues(pf->vsi[i]->netdev);
  		}
  	}
  }
  
  /**
   * ice_rebuild - rebuild after reset
   * @pf: PF to rebuild
   * @reset_type: type of reset
   *
   * Do not rebuild VF VSI in this flow because that is already handled via
   * ice_reset_all_vfs(). This is because requirements for resetting a VF after a
   * PFR/CORER/GLOBER/etc. are different than the normal flow. Also, we don't want
   * to reset/rebuild all the VF VSI twice.
   */
  static void ice_rebuild(struct ice_pf *pf, enum ice_reset_req reset_type)
  {
  	struct device *dev = ice_pf_to_dev(pf);
  	struct ice_hw *hw = &pf->hw;
  	enum ice_status ret;
  	int err;
  
  	if (test_bit(__ICE_DOWN, pf->state))
  		goto clear_recovery;
  
  	dev_dbg(dev, "rebuilding PF after reset_type=%d\n", reset_type);
  
  	ret = ice_init_all_ctrlq(hw);
  	if (ret) {
  		dev_err(dev, "control queues init failed %s\n",
  			ice_stat_str(ret));
  		goto err_init_ctrlq;
  	}
  
  	/* if DDP was previously loaded successfully */
  	if (!ice_is_safe_mode(pf)) {
  		/* reload the SW DB of filter tables */
  		if (reset_type == ICE_RESET_PFR)
  			ice_fill_blk_tbls(hw);
  		else
  			/* Reload DDP Package after CORER/GLOBR reset */
  			ice_load_pkg(NULL, pf);
  	}
  
  	ret = ice_clear_pf_cfg(hw);
  	if (ret) {
  		dev_err(dev, "clear PF configuration failed %s\n",
  			ice_stat_str(ret));
  		goto err_init_ctrlq;
  	}
  
  	if (pf->first_sw->dflt_vsi_ena)
  		dev_info(dev, "Clearing default VSI, re-enable after reset completes\n");
  	/* clear the default VSI configuration if it exists */
  	pf->first_sw->dflt_vsi = NULL;
  	pf->first_sw->dflt_vsi_ena = false;
  
  	ice_clear_pxe_mode(hw);
  
  	ret = ice_get_caps(hw);
  	if (ret) {
  		dev_err(dev, "ice_get_caps failed %s\n", ice_stat_str(ret));
  		goto err_init_ctrlq;
  	}
  
  	ret = ice_aq_set_mac_cfg(hw, ICE_AQ_SET_MAC_FRAME_SIZE_MAX, NULL);
  	if (ret) {
  		dev_err(dev, "set_mac_cfg failed %s\n", ice_stat_str(ret));
  		goto err_init_ctrlq;
  	}
  
  	err = ice_sched_init_port(hw->port_info);
  	if (err)
  		goto err_sched_init_port;
  
  	/* start misc vector */
  	err = ice_req_irq_msix_misc(pf);
  	if (err) {
  		dev_err(dev, "misc vector setup failed: %d\n", err);
  		goto err_sched_init_port;
  	}
  
  	if (test_bit(ICE_FLAG_FD_ENA, pf->flags)) {
  		wr32(hw, PFQF_FD_ENA, PFQF_FD_ENA_FD_ENA_M);
  		if (!rd32(hw, PFQF_FD_SIZE)) {
  			u16 unused, guar, b_effort;
  
  			guar = hw->func_caps.fd_fltr_guar;
  			b_effort = hw->func_caps.fd_fltr_best_effort;
  
  			/* force guaranteed filter pool for PF */
  			ice_alloc_fd_guar_item(hw, &unused, guar);
  			/* force shared filter pool for PF */
  			ice_alloc_fd_shrd_item(hw, &unused, b_effort);
  		}
  	}
  
  	if (test_bit(ICE_FLAG_DCB_ENA, pf->flags))
  		ice_dcb_rebuild(pf);
  
  	/* rebuild PF VSI */
  	err = ice_vsi_rebuild_by_type(pf, ICE_VSI_PF);
  	if (err) {
  		dev_err(dev, "PF VSI rebuild failed: %d\n", err);
  		goto err_vsi_rebuild;
  	}
  
  	/* If Flow Director is active */
  	if (test_bit(ICE_FLAG_FD_ENA, pf->flags)) {
  		err = ice_vsi_rebuild_by_type(pf, ICE_VSI_CTRL);
  		if (err) {
  			dev_err(dev, "control VSI rebuild failed: %d\n", err);
  			goto err_vsi_rebuild;
  		}
  
  		/* replay HW Flow Director recipes */
  		if (hw->fdir_prof)
  			ice_fdir_replay_flows(hw);
  
  		/* replay Flow Director filters */
  		ice_fdir_replay_fltrs(pf);
  
  		ice_rebuild_arfs(pf);
  	}
  
  	ice_update_pf_netdev_link(pf);
  
  	/* tell the firmware we are up */
  	ret = ice_send_version(pf);
  	if (ret) {
  		dev_err(dev, "Rebuild failed due to error sending driver version: %s\n",
  			ice_stat_str(ret));
  		goto err_vsi_rebuild;
  	}
  
  	ice_replay_post(hw);
  
  	/* if we get here, reset flow is successful */
  	clear_bit(__ICE_RESET_FAILED, pf->state);
  	return;
  
  err_vsi_rebuild:
  err_sched_init_port:
  	ice_sched_cleanup_all(hw);
  err_init_ctrlq:
  	ice_shutdown_all_ctrlq(hw);
  	set_bit(__ICE_RESET_FAILED, pf->state);
  clear_recovery:
  	/* set this bit in PF state to control service task scheduling */
  	set_bit(__ICE_NEEDS_RESTART, pf->state);
  	dev_err(dev, "Rebuild failed, unload and reload driver\n");
  }
  
  /**
   * ice_max_xdp_frame_size - returns the maximum allowed frame size for XDP
   * @vsi: Pointer to VSI structure
   */
  static int ice_max_xdp_frame_size(struct ice_vsi *vsi)
  {
  	if (PAGE_SIZE >= 8192 || test_bit(ICE_FLAG_LEGACY_RX, vsi->back->flags))
  		return ICE_RXBUF_2048 - XDP_PACKET_HEADROOM;
  	else
  		return ICE_RXBUF_3072;
  }
  
  /**
   * ice_change_mtu - NDO callback to change the MTU
   * @netdev: network interface device structure
   * @new_mtu: new value for maximum frame size
   *
   * Returns 0 on success, negative on failure
   */
  static int ice_change_mtu(struct net_device *netdev, int new_mtu)
  {
  	struct ice_netdev_priv *np = netdev_priv(netdev);
  	struct ice_vsi *vsi = np->vsi;
  	struct ice_pf *pf = vsi->back;
  	u8 count = 0;
  
  	if (new_mtu == (int)netdev->mtu) {
  		netdev_warn(netdev, "MTU is already %u\n", netdev->mtu);
  		return 0;
  	}
  
  	if (ice_is_xdp_ena_vsi(vsi)) {
  		int frame_size = ice_max_xdp_frame_size(vsi);
  
  		if (new_mtu + ICE_ETH_PKT_HDR_PAD > frame_size) {
  			netdev_err(netdev, "max MTU for XDP usage is %d\n",
  				   frame_size - ICE_ETH_PKT_HDR_PAD);
  			return -EINVAL;
  		}
  	}
  
  	if (new_mtu < (int)netdev->min_mtu) {
  		netdev_err(netdev, "new MTU invalid. min_mtu is %d\n",
  			   netdev->min_mtu);
  		return -EINVAL;
  	} else if (new_mtu > (int)netdev->max_mtu) {
  		netdev_err(netdev, "new MTU invalid. max_mtu is %d\n",
  			   netdev->min_mtu);
  		return -EINVAL;
  	}
  	/* if a reset is in progress, wait for some time for it to complete */
  	do {
  		if (ice_is_reset_in_progress(pf->state)) {
  			count++;
  			usleep_range(1000, 2000);
  		} else {
  			break;
  		}
  
  	} while (count < 100);
  
  	if (count == 100) {
  		netdev_err(netdev, "can't change MTU. Device is busy\n");
  		return -EBUSY;
  	}
  
  	netdev->mtu = (unsigned int)new_mtu;
  
  	/* if VSI is up, bring it down and then back up */
  	if (!test_and_set_bit(__ICE_DOWN, vsi->state)) {
  		int err;
  
  		err = ice_down(vsi);
  		if (err) {
  			netdev_err(netdev, "change MTU if_up err %d\n", err);
  			return err;
  		}
  
  		err = ice_up(vsi);
  		if (err) {
  			netdev_err(netdev, "change MTU if_up err %d\n", err);
  			return err;
  		}
  	}
  
  	netdev_dbg(netdev, "changed MTU to %d\n", new_mtu);
  	return 0;
  }
  
  /**
   * ice_aq_str - convert AQ err code to a string
   * @aq_err: the AQ error code to convert
   */
  const char *ice_aq_str(enum ice_aq_err aq_err)
  {
  	switch (aq_err) {
  	case ICE_AQ_RC_OK:
  		return "OK";
  	case ICE_AQ_RC_EPERM:
  		return "ICE_AQ_RC_EPERM";
  	case ICE_AQ_RC_ENOENT:
  		return "ICE_AQ_RC_ENOENT";
  	case ICE_AQ_RC_ENOMEM:
  		return "ICE_AQ_RC_ENOMEM";
  	case ICE_AQ_RC_EBUSY:
  		return "ICE_AQ_RC_EBUSY";
  	case ICE_AQ_RC_EEXIST:
  		return "ICE_AQ_RC_EEXIST";
  	case ICE_AQ_RC_EINVAL:
  		return "ICE_AQ_RC_EINVAL";
  	case ICE_AQ_RC_ENOSPC:
  		return "ICE_AQ_RC_ENOSPC";
  	case ICE_AQ_RC_ENOSYS:
  		return "ICE_AQ_RC_ENOSYS";
  	case ICE_AQ_RC_EMODE:
  		return "ICE_AQ_RC_EMODE";
  	case ICE_AQ_RC_ENOSEC:
  		return "ICE_AQ_RC_ENOSEC";
  	case ICE_AQ_RC_EBADSIG:
  		return "ICE_AQ_RC_EBADSIG";
  	case ICE_AQ_RC_ESVN:
  		return "ICE_AQ_RC_ESVN";
  	case ICE_AQ_RC_EBADMAN:
  		return "ICE_AQ_RC_EBADMAN";
  	case ICE_AQ_RC_EBADBUF:
  		return "ICE_AQ_RC_EBADBUF";
  	}
  
  	return "ICE_AQ_RC_UNKNOWN";
  }
  
  /**
   * ice_stat_str - convert status err code to a string
   * @stat_err: the status error code to convert
   */
  const char *ice_stat_str(enum ice_status stat_err)
  {
  	switch (stat_err) {
  	case ICE_SUCCESS:
  		return "OK";
  	case ICE_ERR_PARAM:
  		return "ICE_ERR_PARAM";
  	case ICE_ERR_NOT_IMPL:
  		return "ICE_ERR_NOT_IMPL";
  	case ICE_ERR_NOT_READY:
  		return "ICE_ERR_NOT_READY";
  	case ICE_ERR_NOT_SUPPORTED:
  		return "ICE_ERR_NOT_SUPPORTED";
  	case ICE_ERR_BAD_PTR:
  		return "ICE_ERR_BAD_PTR";
  	case ICE_ERR_INVAL_SIZE:
  		return "ICE_ERR_INVAL_SIZE";
  	case ICE_ERR_DEVICE_NOT_SUPPORTED:
  		return "ICE_ERR_DEVICE_NOT_SUPPORTED";
  	case ICE_ERR_RESET_FAILED:
  		return "ICE_ERR_RESET_FAILED";
  	case ICE_ERR_FW_API_VER:
  		return "ICE_ERR_FW_API_VER";
  	case ICE_ERR_NO_MEMORY:
  		return "ICE_ERR_NO_MEMORY";
  	case ICE_ERR_CFG:
  		return "ICE_ERR_CFG";
  	case ICE_ERR_OUT_OF_RANGE:
  		return "ICE_ERR_OUT_OF_RANGE";
  	case ICE_ERR_ALREADY_EXISTS:
  		return "ICE_ERR_ALREADY_EXISTS";
  	case ICE_ERR_NVM_CHECKSUM:
  		return "ICE_ERR_NVM_CHECKSUM";
  	case ICE_ERR_BUF_TOO_SHORT:
  		return "ICE_ERR_BUF_TOO_SHORT";
  	case ICE_ERR_NVM_BLANK_MODE:
  		return "ICE_ERR_NVM_BLANK_MODE";
  	case ICE_ERR_IN_USE:
  		return "ICE_ERR_IN_USE";
  	case ICE_ERR_MAX_LIMIT:
  		return "ICE_ERR_MAX_LIMIT";
  	case ICE_ERR_RESET_ONGOING:
  		return "ICE_ERR_RESET_ONGOING";
  	case ICE_ERR_HW_TABLE:
  		return "ICE_ERR_HW_TABLE";
  	case ICE_ERR_DOES_NOT_EXIST:
  		return "ICE_ERR_DOES_NOT_EXIST";
  	case ICE_ERR_FW_DDP_MISMATCH:
  		return "ICE_ERR_FW_DDP_MISMATCH";
  	case ICE_ERR_AQ_ERROR:
  		return "ICE_ERR_AQ_ERROR";
  	case ICE_ERR_AQ_TIMEOUT:
  		return "ICE_ERR_AQ_TIMEOUT";
  	case ICE_ERR_AQ_FULL:
  		return "ICE_ERR_AQ_FULL";
  	case ICE_ERR_AQ_NO_WORK:
  		return "ICE_ERR_AQ_NO_WORK";
  	case ICE_ERR_AQ_EMPTY:
  		return "ICE_ERR_AQ_EMPTY";
  	case ICE_ERR_AQ_FW_CRITICAL:
  		return "ICE_ERR_AQ_FW_CRITICAL";
  	}
  
  	return "ICE_ERR_UNKNOWN";
  }
  
  /**
   * ice_set_rss - Set RSS keys and lut
   * @vsi: Pointer to VSI structure
   * @seed: RSS hash seed
   * @lut: Lookup table
   * @lut_size: Lookup table size
   *
   * Returns 0 on success, negative on failure
   */
  int ice_set_rss(struct ice_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
  {
  	struct ice_pf *pf = vsi->back;
  	struct ice_hw *hw = &pf->hw;
  	enum ice_status status;
  	struct device *dev;
  
  	dev = ice_pf_to_dev(pf);
  	if (seed) {
  		struct ice_aqc_get_set_rss_keys *buf =
  				  (struct ice_aqc_get_set_rss_keys *)seed;
  
  		status = ice_aq_set_rss_key(hw, vsi->idx, buf);
  
  		if (status) {
  			dev_err(dev, "Cannot set RSS key, err %s aq_err %s\n",
  				ice_stat_str(status),
  				ice_aq_str(hw->adminq.sq_last_status));
  			return -EIO;
  		}
  	}
  
  	if (lut) {
  		status = ice_aq_set_rss_lut(hw, vsi->idx, vsi->rss_lut_type,
  					    lut, lut_size);
  		if (status) {
  			dev_err(dev, "Cannot set RSS lut, err %s aq_err %s\n",
  				ice_stat_str(status),
  				ice_aq_str(hw->adminq.sq_last_status));
  			return -EIO;
  		}
  	}
  
  	return 0;
  }
  
  /**
   * ice_get_rss - Get RSS keys and lut
   * @vsi: Pointer to VSI structure
   * @seed: Buffer to store the keys
   * @lut: Buffer to store the lookup table entries
   * @lut_size: Size of buffer to store the lookup table entries
   *
   * Returns 0 on success, negative on failure
   */
  int ice_get_rss(struct ice_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
  {
  	struct ice_pf *pf = vsi->back;
  	struct ice_hw *hw = &pf->hw;
  	enum ice_status status;
  	struct device *dev;
  
  	dev = ice_pf_to_dev(pf);
  	if (seed) {
  		struct ice_aqc_get_set_rss_keys *buf =
  				  (struct ice_aqc_get_set_rss_keys *)seed;
  
  		status = ice_aq_get_rss_key(hw, vsi->idx, buf);
  		if (status) {
  			dev_err(dev, "Cannot get RSS key, err %s aq_err %s\n",
  				ice_stat_str(status),
  				ice_aq_str(hw->adminq.sq_last_status));
  			return -EIO;
  		}
  	}
  
  	if (lut) {
  		status = ice_aq_get_rss_lut(hw, vsi->idx, vsi->rss_lut_type,
  					    lut, lut_size);
  		if (status) {
  			dev_err(dev, "Cannot get RSS lut, err %s aq_err %s\n",
  				ice_stat_str(status),
  				ice_aq_str(hw->adminq.sq_last_status));
  			return -EIO;
  		}
  	}
  
  	return 0;
  }
  
  /**
   * ice_bridge_getlink - Get the hardware bridge mode
   * @skb: skb buff
   * @pid: process ID
   * @seq: RTNL message seq
   * @dev: the netdev being configured
   * @filter_mask: filter mask passed in
   * @nlflags: netlink flags passed in
   *
   * Return the bridge mode (VEB/VEPA)
   */
  static int
  ice_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
  		   struct net_device *dev, u32 filter_mask, int nlflags)
  {
  	struct ice_netdev_priv *np = netdev_priv(dev);
  	struct ice_vsi *vsi = np->vsi;
  	struct ice_pf *pf = vsi->back;
  	u16 bmode;
  
  	bmode = pf->first_sw->bridge_mode;
  
  	return ndo_dflt_bridge_getlink(skb, pid, seq, dev, bmode, 0, 0, nlflags,
  				       filter_mask, NULL);
  }
  
  /**
   * ice_vsi_update_bridge_mode - Update VSI for switching bridge mode (VEB/VEPA)
   * @vsi: Pointer to VSI structure
   * @bmode: Hardware bridge mode (VEB/VEPA)
   *
   * Returns 0 on success, negative on failure
   */
  static int ice_vsi_update_bridge_mode(struct ice_vsi *vsi, u16 bmode)
  {
  	struct ice_aqc_vsi_props *vsi_props;
  	struct ice_hw *hw = &vsi->back->hw;
  	struct ice_vsi_ctx *ctxt;
  	enum ice_status status;
  	int ret = 0;
  
  	vsi_props = &vsi->info;
  
  	ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL);
  	if (!ctxt)
  		return -ENOMEM;
  
  	ctxt->info = vsi->info;
  
  	if (bmode == BRIDGE_MODE_VEB)
  		/* change from VEPA to VEB mode */
  		ctxt->info.sw_flags |= ICE_AQ_VSI_SW_FLAG_ALLOW_LB;
  	else
  		/* change from VEB to VEPA mode */
  		ctxt->info.sw_flags &= ~ICE_AQ_VSI_SW_FLAG_ALLOW_LB;
  	ctxt->info.valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_SW_VALID);
  
  	status = ice_update_vsi(hw, vsi->idx, ctxt, NULL);
  	if (status) {
  		dev_err(ice_pf_to_dev(vsi->back), "update VSI for bridge mode failed, bmode = %d err %s aq_err %s\n",
  			bmode, ice_stat_str(status),
  			ice_aq_str(hw->adminq.sq_last_status));
  		ret = -EIO;
  		goto out;
  	}
  	/* Update sw flags for book keeping */
  	vsi_props->sw_flags = ctxt->info.sw_flags;
  
  out:
  	kfree(ctxt);
  	return ret;
  }
  
  /**
   * ice_bridge_setlink - Set the hardware bridge mode
   * @dev: the netdev being configured
   * @nlh: RTNL message
   * @flags: bridge setlink flags
   * @extack: netlink extended ack
   *
   * Sets the bridge mode (VEB/VEPA) of the switch to which the netdev (VSI) is
   * hooked up to. Iterates through the PF VSI list and sets the loopback mode (if
   * not already set for all VSIs connected to this switch. And also update the
   * unicast switch filter rules for the corresponding switch of the netdev.
   */
  static int
  ice_bridge_setlink(struct net_device *dev, struct nlmsghdr *nlh,
  		   u16 __always_unused flags,
  		   struct netlink_ext_ack __always_unused *extack)
  {
  	struct ice_netdev_priv *np = netdev_priv(dev);
  	struct ice_pf *pf = np->vsi->back;
  	struct nlattr *attr, *br_spec;
  	struct ice_hw *hw = &pf->hw;
  	enum ice_status status;
  	struct ice_sw *pf_sw;
  	int rem, v, err = 0;
  
  	pf_sw = pf->first_sw;
  	/* find the attribute in the netlink message */
  	br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
  
  	nla_for_each_nested(attr, br_spec, rem) {
  		__u16 mode;
  
  		if (nla_type(attr) != IFLA_BRIDGE_MODE)
  			continue;
  		mode = nla_get_u16(attr);
  		if (mode != BRIDGE_MODE_VEPA && mode != BRIDGE_MODE_VEB)
  			return -EINVAL;
  		/* Continue  if bridge mode is not being flipped */
  		if (mode == pf_sw->bridge_mode)
  			continue;
  		/* Iterates through the PF VSI list and update the loopback
  		 * mode of the VSI
  		 */
  		ice_for_each_vsi(pf, v) {
  			if (!pf->vsi[v])
  				continue;
  			err = ice_vsi_update_bridge_mode(pf->vsi[v], mode);
  			if (err)
  				return err;
  		}
  
  		hw->evb_veb = (mode == BRIDGE_MODE_VEB);
  		/* Update the unicast switch filter rules for the corresponding
  		 * switch of the netdev
  		 */
  		status = ice_update_sw_rule_bridge_mode(hw);
  		if (status) {
  			netdev_err(dev, "switch rule update failed, mode = %d err %s aq_err %s\n",
  				   mode, ice_stat_str(status),
  				   ice_aq_str(hw->adminq.sq_last_status));
  			/* revert hw->evb_veb */
  			hw->evb_veb = (pf_sw->bridge_mode == BRIDGE_MODE_VEB);
  			return -EIO;
  		}
  
  		pf_sw->bridge_mode = mode;
  	}
  
  	return 0;
  }
  
  /**
   * ice_tx_timeout - Respond to a Tx Hang
   * @netdev: network interface device structure
   * @txqueue: Tx queue
   */
  static void ice_tx_timeout(struct net_device *netdev, unsigned int txqueue)
  {
  	struct ice_netdev_priv *np = netdev_priv(netdev);
  	struct ice_ring *tx_ring = NULL;
  	struct ice_vsi *vsi = np->vsi;
  	struct ice_pf *pf = vsi->back;
  	u32 i;
  
  	pf->tx_timeout_count++;
  
  	/* Check if PFC is enabled for the TC to which the queue belongs
  	 * to. If yes then Tx timeout is not caused by a hung queue, no
  	 * need to reset and rebuild
  	 */
  	if (ice_is_pfc_causing_hung_q(pf, txqueue)) {
  		dev_info(ice_pf_to_dev(pf), "Fake Tx hang detected on queue %u, timeout caused by PFC storm\n",
  			 txqueue);
  		return;
  	}
  
  	/* now that we have an index, find the tx_ring struct */
  	for (i = 0; i < vsi->num_txq; i++)
  		if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
  			if (txqueue == vsi->tx_rings[i]->q_index) {
  				tx_ring = vsi->tx_rings[i];
  				break;
  			}
  
  	/* Reset recovery level if enough time has elapsed after last timeout.
  	 * Also ensure no new reset action happens before next timeout period.
  	 */
  	if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ * 20)))
  		pf->tx_timeout_recovery_level = 1;
  	else if (time_before(jiffies, (pf->tx_timeout_last_recovery +
  				       netdev->watchdog_timeo)))
  		return;
  
  	if (tx_ring) {
  		struct ice_hw *hw = &pf->hw;
  		u32 head, val = 0;
  
  		head = (rd32(hw, QTX_COMM_HEAD(vsi->txq_map[txqueue])) &
  			QTX_COMM_HEAD_HEAD_M) >> QTX_COMM_HEAD_HEAD_S;
  		/* Read interrupt register */
  		val = rd32(hw, GLINT_DYN_CTL(tx_ring->q_vector->reg_idx));
  
  		netdev_info(netdev, "tx_timeout: VSI_num: %d, Q %u, NTC: 0x%x, HW_HEAD: 0x%x, NTU: 0x%x, INT: 0x%x\n",
  			    vsi->vsi_num, txqueue, tx_ring->next_to_clean,
  			    head, tx_ring->next_to_use, val);
  	}
  
  	pf->tx_timeout_last_recovery = jiffies;
  	netdev_info(netdev, "tx_timeout recovery level %d, txqueue %u\n",
  		    pf->tx_timeout_recovery_level, txqueue);
  
  	switch (pf->tx_timeout_recovery_level) {
  	case 1:
  		set_bit(__ICE_PFR_REQ, pf->state);
  		break;
  	case 2:
  		set_bit(__ICE_CORER_REQ, pf->state);
  		break;
  	case 3:
  		set_bit(__ICE_GLOBR_REQ, pf->state);
  		break;
  	default:
  		netdev_err(netdev, "tx_timeout recovery unsuccessful, device is in unrecoverable state.\n");
  		set_bit(__ICE_DOWN, pf->state);
  		set_bit(__ICE_NEEDS_RESTART, vsi->state);
  		set_bit(__ICE_SERVICE_DIS, pf->state);
  		break;
  	}
  
  	ice_service_task_schedule(pf);
  	pf->tx_timeout_recovery_level++;
  }
  
  /**
   * ice_open - Called when a network interface becomes active
   * @netdev: network interface device structure
   *
   * The open entry point is called when a network interface is made
   * active by the system (IFF_UP). At this point all resources needed
   * for transmit and receive operations are allocated, the interrupt
   * handler is registered with the OS, the netdev watchdog is enabled,
   * and the stack is notified that the interface is ready.
   *
   * Returns 0 on success, negative value on failure
   */
  int ice_open(struct net_device *netdev)
  {
  	struct ice_netdev_priv *np = netdev_priv(netdev);
  	struct ice_pf *pf = np->vsi->back;
  
  	if (ice_is_reset_in_progress(pf->state)) {
  		netdev_err(netdev, "can't open net device while reset is in progress");
  		return -EBUSY;
  	}
  
  	return ice_open_internal(netdev);
  }
  
  /**
   * ice_open_internal - Called when a network interface becomes active
   * @netdev: network interface device structure
   *
   * Internal ice_open implementation. Should not be used directly except for ice_open and reset
   * handling routine
   *
   * Returns 0 on success, negative value on failure
   */
  int ice_open_internal(struct net_device *netdev)
  {
  	struct ice_netdev_priv *np = netdev_priv(netdev);
  	struct ice_vsi *vsi = np->vsi;
  	struct ice_pf *pf = vsi->back;
  	struct ice_port_info *pi;
  	int err;
  
  	if (test_bit(__ICE_NEEDS_RESTART, pf->state)) {
  		netdev_err(netdev, "driver needs to be unloaded and reloaded\n");
  		return -EIO;
  	}
  
  	if (test_bit(__ICE_DOWN, pf->state)) {
  		netdev_err(netdev, "device is not ready yet\n");
  		return -EBUSY;
  	}
  
  	netif_carrier_off(netdev);
  
  	pi = vsi->port_info;
  	err = ice_update_link_info(pi);
  	if (err) {
  		netdev_err(netdev, "Failed to get link info, error %d\n",
  			   err);
  		return err;
  	}
  
  	/* Set PHY if there is media, otherwise, turn off PHY */
  	if (pi->phy.link_info.link_info & ICE_AQ_MEDIA_AVAILABLE) {
  		clear_bit(ICE_FLAG_NO_MEDIA, pf->flags);
  		if (!test_bit(__ICE_PHY_INIT_COMPLETE, pf->state)) {
  			err = ice_init_phy_user_cfg(pi);
  			if (err) {
  				netdev_err(netdev, "Failed to initialize PHY settings, error %d\n",
  					   err);
  				return err;
  			}
  		}
  
  		err = ice_configure_phy(vsi);
  		if (err) {
  			netdev_err(netdev, "Failed to set physical link up, error %d\n",
  				   err);
  			return err;
  		}
  	} else {
  		set_bit(ICE_FLAG_NO_MEDIA, pf->flags);
  		err = ice_aq_set_link_restart_an(pi, false, NULL);
  		if (err) {
  			netdev_err(netdev, "Failed to set PHY state, VSI %d error %d\n",
  				   vsi->vsi_num, err);
  			return err;
  		}
  	}
  
  	err = ice_vsi_open(vsi);
  	if (err)
  		netdev_err(netdev, "Failed to open VSI 0x%04X on switch 0x%04X\n",
  			   vsi->vsi_num, vsi->vsw->sw_id);
  
  	/* Update existing tunnels information */
  	udp_tunnel_get_rx_info(netdev);
  
  	return err;
  }
  
  /**
   * ice_stop - Disables a network interface
   * @netdev: network interface device structure
   *
   * The stop entry point is called when an interface is de-activated by the OS,
   * and the netdevice enters the DOWN state. The hardware is still under the
   * driver's control, but the netdev interface is disabled.
   *
   * Returns success only - not allowed to fail
   */
  int ice_stop(struct net_device *netdev)
  {
  	struct ice_netdev_priv *np = netdev_priv(netdev);
  	struct ice_vsi *vsi = np->vsi;
  	struct ice_pf *pf = vsi->back;
  
  	if (ice_is_reset_in_progress(pf->state)) {
  		netdev_err(netdev, "can't stop net device while reset is in progress");
  		return -EBUSY;
  	}
  
  	ice_vsi_close(vsi);
  
  	return 0;
  }
  
  /**
   * ice_features_check - Validate encapsulated packet conforms to limits
   * @skb: skb buffer
   * @netdev: This port's netdev
   * @features: Offload features that the stack believes apply
   */
  static netdev_features_t
  ice_features_check(struct sk_buff *skb,
  		   struct net_device __always_unused *netdev,
  		   netdev_features_t features)
  {
  	size_t len;
  
  	/* No point in doing any of this if neither checksum nor GSO are
  	 * being requested for this frame. We can rule out both by just
  	 * checking for CHECKSUM_PARTIAL
  	 */
  	if (skb->ip_summed != CHECKSUM_PARTIAL)
  		return features;
  
  	/* We cannot support GSO if the MSS is going to be less than
  	 * 64 bytes. If it is then we need to drop support for GSO.
  	 */
  	if (skb_is_gso(skb) && (skb_shinfo(skb)->gso_size < 64))
  		features &= ~NETIF_F_GSO_MASK;
  
  	len = skb_network_header(skb) - skb->data;
  	if (len > ICE_TXD_MACLEN_MAX || len & 0x1)
  		goto out_rm_features;
  
  	len = skb_transport_header(skb) - skb_network_header(skb);
  	if (len > ICE_TXD_IPLEN_MAX || len & 0x1)
  		goto out_rm_features;
  
  	if (skb->encapsulation) {
  		len = skb_inner_network_header(skb) - skb_transport_header(skb);
  		if (len > ICE_TXD_L4LEN_MAX || len & 0x1)
  			goto out_rm_features;
  
  		len = skb_inner_transport_header(skb) -
  		      skb_inner_network_header(skb);
  		if (len > ICE_TXD_IPLEN_MAX || len & 0x1)
  			goto out_rm_features;
  	}
  
  	return features;
  out_rm_features:
  	return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
  }
  
  static const struct net_device_ops ice_netdev_safe_mode_ops = {
  	.ndo_open = ice_open,
  	.ndo_stop = ice_stop,
  	.ndo_start_xmit = ice_start_xmit,
  	.ndo_set_mac_address = ice_set_mac_address,
  	.ndo_validate_addr = eth_validate_addr,
  	.ndo_change_mtu = ice_change_mtu,
  	.ndo_get_stats64 = ice_get_stats64,
  	.ndo_tx_timeout = ice_tx_timeout,
  	.ndo_bpf = ice_xdp_safe_mode,
  };
  
  static const struct net_device_ops ice_netdev_ops = {
  	.ndo_open = ice_open,
  	.ndo_stop = ice_stop,
  	.ndo_start_xmit = ice_start_xmit,
  	.ndo_features_check = ice_features_check,
  	.ndo_set_rx_mode = ice_set_rx_mode,
  	.ndo_set_mac_address = ice_set_mac_address,
  	.ndo_validate_addr = eth_validate_addr,
  	.ndo_change_mtu = ice_change_mtu,
  	.ndo_get_stats64 = ice_get_stats64,
  	.ndo_set_tx_maxrate = ice_set_tx_maxrate,
  	.ndo_set_vf_spoofchk = ice_set_vf_spoofchk,
  	.ndo_set_vf_mac = ice_set_vf_mac,
  	.ndo_get_vf_config = ice_get_vf_cfg,
  	.ndo_set_vf_trust = ice_set_vf_trust,
  	.ndo_set_vf_vlan = ice_set_vf_port_vlan,
  	.ndo_set_vf_link_state = ice_set_vf_link_state,
  	.ndo_get_vf_stats = ice_get_vf_stats,
  	.ndo_vlan_rx_add_vid = ice_vlan_rx_add_vid,
  	.ndo_vlan_rx_kill_vid = ice_vlan_rx_kill_vid,
  	.ndo_set_features = ice_set_features,
  	.ndo_bridge_getlink = ice_bridge_getlink,
  	.ndo_bridge_setlink = ice_bridge_setlink,
  	.ndo_fdb_add = ice_fdb_add,
  	.ndo_fdb_del = ice_fdb_del,
  #ifdef CONFIG_RFS_ACCEL
  	.ndo_rx_flow_steer = ice_rx_flow_steer,
  #endif
  	.ndo_tx_timeout = ice_tx_timeout,
  	.ndo_bpf = ice_xdp,
  	.ndo_xdp_xmit = ice_xdp_xmit,
  	.ndo_xsk_wakeup = ice_xsk_wakeup,
  	.ndo_udp_tunnel_add = udp_tunnel_nic_add_port,
  	.ndo_udp_tunnel_del = udp_tunnel_nic_del_port,
  };
  