gpio: rcar: Fix runtime PM imbalance on error

[linux/fpc-iii.git] / drivers / net / ethernet / intel / ice / ice_main.c

// 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 "ice.h"
#include "ice_base.h"
#include "ice_lib.h"
#include "ice_dcb_lib.h"
#include "ice_dcb_nl.h"
#include "ice_devlink.h"

#define DRV_VERSION_MAJOR 0
#define DRV_VERSION_MINOR 8
#define DRV_VERSION_BUILD 2

#define DRV_VERSION     __stringify(DRV_VERSION_MAJOR) "." \
                        __stringify(DRV_VERSION_MINOR) "." \
                        __stringify(DRV_VERSION_BUILD) "-k"
#define DRV_SUMMARY     "Intel(R) Ethernet Connection E800 Series Linux Driver"
const char ice_drv_ver[] = DRV_VERSION;
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_VERSION(DRV_VERSION);
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;
        u8 broadcast[ETH_ALEN];
        struct ice_vsi *vsi;

        vsi = ice_get_main_vsi(pf);
        if (!vsi)
                return -EINVAL;

        /* To add a MAC filter, first add the MAC to a list and then
         * pass the list to ice_add_mac.
         */

         /* Add a unicast MAC filter so the VSI can get its packets */
        status = ice_vsi_cfg_mac_fltr(vsi, vsi->port_info->mac.perm_addr, true);
        if (status)
                goto unregister;

        /* VSI needs to receive broadcast traffic, so add the broadcast
         * MAC address to the list as well.
         */
        eth_broadcast_addr(broadcast);
        status = ice_vsi_cfg_mac_fltr(vsi, broadcast, true);
        if (status)
                goto unregister;

        return 0;
unregister:
        /* We aren't useful with no MAC filters, so unregister if we
         * had an error
         */
        if (status && vsi->netdev->reg_state == NETREG_REGISTERED) {
                dev_err(ice_pf_to_dev(pf), "Could not add MAC filters error %d. Unregistering device\n",
                        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_add_mac_to_list(vsi, &vsi->tmp_sync_list, addr))
                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;

        if (ice_add_mac_to_list(vsi, &vsi->tmp_unsync_list, addr))
                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_remove_mac(hw, &vsi->tmp_unsync_list);
        ice_free_fltr_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_add_mac(hw, &vsi->tmp_sync_list);
        ice_free_fltr_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 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, 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;
                                }
                        }
                } 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;
                                }
                        }
                }
        }
        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;
        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);
        WARN_ON(in_interrupt());

        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;
        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";
                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");

        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: %s, Flow Control: %s\n",
                    speed, fec_req, fec, 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_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);

        /* 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;

        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;
                }
        }

        ice_dcb_rebuild(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;
}

/**
 * __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 %d\n", qtype,
                                ret);
                        break;
                }

                opcode = le16_to_cpu(event.desc.opcode);

                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.
 */
static 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
 */
static void ice_service_task_stop(struct ice_pf *pf)
{
        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);
}

/**
 * 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;
        u32 reg;
        int i;

        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))
                                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;

        cfg = kzalloc(sizeof(*cfg), GFP_KERNEL);
        if (!cfg) {
                retcode = -ENOMEM;
                goto out;
        }

        cfg->phy_type_low = pcaps->phy_type_low;
        cfg->phy_type_high = pcaps->phy_type_high;
        cfg->caps = pcaps->caps | ICE_AQ_PHY_ENA_AUTO_LINK_UPDT;
        cfg->low_power_ctrl = pcaps->low_power_ctrl;
        cfg->eee_cap = pcaps->eee_cap;
        cfg->eeer_value = pcaps->eeer_value;
        cfg->link_fec_opt = pcaps->link_fec_options;
        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->lport, 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_check_media_subtask - Check for media; bring link up if detected.
 * @pf: pointer to PF struct
 */
static void ice_check_media_subtask(struct ice_pf *pf)
{
        struct ice_port_info *pi;
        struct ice_vsi *vsi;
        int err;

        vsi = ice_get_main_vsi(pf);
        if (!vsi)
                return;

        /* No need to check for media if it's already present or the interface
         * is down
         */
        if (!test_bit(ICE_FLAG_NO_MEDIA, pf->flags) ||
            test_bit(__ICE_DOWN, vsi->state))
                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) {
                err = ice_force_phys_link_state(vsi, true);
                if (err)
                        return;
                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);

        /* 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 */
                q_vector->affinity_notify.notify = ice_irq_affinity_notify;
                q_vector->affinity_notify.release = ice_irq_affinity_release;
                irq_set_affinity_notifier(irq_num, &q_vector->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,
                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;
                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_umem = ice_xsk_umem(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:%d\n",
                        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 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;

        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_txq;
                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_umems) {
                int i;

                ice_for_each_rxq(vsi, i) {
                        struct ice_ring *rx_ring = vsi->rx_rings[i];

                        if (rx_ring->xsk_umem)
                                napi_schedule(&rx_ring->q_vector->napi);
                }
        }

        return (ret || xdp_ring_err) ? -ENOMEM : 0;
}

/**
 * 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_QUERY_PROG:
                xdp->prog_id = vsi->xdp_prog ? vsi->xdp_prog->aux->id : 0;
                return 0;
        case XDP_SETUP_XSK_UMEM:
                return ice_xsk_umem_setup(vsi, xdp->xsk.umem,
                                          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;

        if (!test_bit(__ICE_DOWN, pf->state)) {
                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 = 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;
        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_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_GSO_UDP_L4;

        /* set features that user can change */
        netdev->hw_features = dflt_features | csumo_features |
                              vlano_features | tso_features;

        /* 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(pf);
        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_destroy_devlink_port;

        devlink_port_type_eth_set(&pf->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_destroy_devlink_port:
        ice_devlink_destroy_port(pf);

        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_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);
        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) {
                status = -ENOMEM;
                goto unroll_vsi_setup;
        }

        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_init_mac_fltr(pf);
        if (status)
                goto unroll_napi_add;

        return status;

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:
        if (vsi) {
                ice_vsi_free_q_vectors(vsi);
                ice_vsi_delete(vsi);
                ice_vsi_put_qs(vsi);
                ice_vsi_clear(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)
{
        u16 count = 0, bit;

        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);

        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);

        /* 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;

        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);
/* 2 vectors for LAN (traffic + OICR) */
#define ICE_MIN_LAN_VECS 2

                if (v_actual < ICE_MIN_LAN_VECS) {
                        /* 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_VECS;
                }
        }

        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 = vectors;
        pf->irq_tracker->num_entries = vectors;
        pf->irq_tracker->end = pf->irq_tracker->num_entries;

        return 0;
}

/**
 * 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 = new_tx;
        if (new_rx)
                vsi->req_rxq = 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_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_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");
                        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 = DRV_VERSION_MAJOR;
        dv.minor_ver = DRV_VERSION_MINOR;
        dv.build_ver = DRV_VERSION_BUILD;
        dv.subbuild_ver = 0;
        strscpy((char *)dv.driver_string, DRV_VERSION,
                sizeof(dv.driver_string));
        return ice_aq_send_driver_ver(&pf->hw, &dv, NULL);
}

/**
 * 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_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 err;

        /* 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->num_alloc_vsi = hw->func_caps.guar_num_vsi;
        if (!pf->num_alloc_vsi) {
                err = -EIO;
                goto err_init_pf_unroll;
        }

        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_interrupt_unroll;
        }

        /* Driver is mostly up */
        clear_bit(__ICE_DOWN, pf->state);

        /* 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",
                        ice_drv_ver, err);
                goto err_alloc_sw_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_alloc_sw_unroll;
        }

        ice_verify_cacheline_size(pf);

        /* If no DDP driven features have to be setup, return here */
        if (ice_is_safe_mode(pf))
                return 0;

        /* initialize DDP driven features */

        /* 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);

        return 0;

err_alloc_sw_unroll:
        ice_devlink_destroy_port(pf);
        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);
        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);
        return err;
}

/**
 * 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_devlink_destroy_port(pf);
        ice_vsi_release_all(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);
}

/**
 * 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, enum pci_channel_state 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_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_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 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,
        .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 - version %s\n", ice_driver_string, ice_drv_ver);
        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 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_warn(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;
        }

        /* When we change the MAC address we also have to change the MAC address
         * based filter rules that were created previously for the old MAC
         * address. So first, we remove the old filter rule using ice_remove_mac
         * and then create a new filter rule using ice_add_mac via
         * ice_vsi_cfg_mac_fltr function call for both add and/or remove
         * filters.
         */
        status = ice_vsi_cfg_mac_fltr(vsi, netdev->dev_addr, false);
        if (status) {
                err = -EADDRNOTAVAIL;
                goto err_update_filters;
        }

        status = ice_vsi_cfg_mac_fltr(vsi, mac, true);
        if (status) {
                err = -EADDRNOTAVAIL;
                goto err_update_filters;
        }

err_update_filters:
        if (err) {
                netdev_err(netdev, "can't set MAC %pM. filter update failed\n",
                           mac);
                return err;
        }

        /* change the netdev's MAC address */
        memcpy(netdev->dev_addr, mac, netdev->addr_len);
        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 %d\n",
                           mac, 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 %d\n",
                           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);

        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_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;

        rcu_read_lock();

        /* update Tx rings counters */
        ice_for_each_txq(vsi, i) {
                ring = READ_ONCE(vsi->tx_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;
        }

        /* 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;
        }

        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;
        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;
                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;
        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);

        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);

        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 - 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 %d, VSI index %d, type %s\n",
                                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
 */
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 %d\n", 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 %d\n", 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 %d\n", ret);
                goto err_init_ctrlq;
        }

        err = ice_sched_init_port(hw->port_info);
        if (err)
                goto err_sched_init_port;

        err = ice_update_link_info(hw->port_info);
        if (err)
                dev_err(dev, "Get link status error %d\n", err);

        /* 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_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 (test_bit(ICE_FLAG_SRIOV_ENA, pf->flags)) {
                err = ice_vsi_rebuild_by_type(pf, ICE_VSI_VF);
                if (err) {
                        dev_err(dev, "VF VSI rebuild failed: %d\n", err);
                        goto err_vsi_rebuild;
                }
        }

        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: %d\n",
                        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 == 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 < netdev->min_mtu) {
                netdev_err(netdev, "new MTU invalid. min_mtu is %d\n",
                           netdev->min_mtu);
                return -EINVAL;
        } else if (new_mtu > 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 = 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_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 %d aq_err %d\n",
                                status, hw->adminq.rq_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 %d aq_err %d\n",
                                status, hw->adminq.rq_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 %d aq_err %d\n",
                                status, hw->adminq.rq_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 %d aq_err %d\n",
                                status, hw->adminq.rq_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 %d aq_err %d\n",
                        bmode, status, 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 %d aq_err %d\n",
                                   mode, status, 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++;

        /* 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_vsi *vsi = np->vsi;
        struct ice_port_info *pi;
        int err;

        if (test_bit(__ICE_NEEDS_RESTART, vsi->back->state)) {
                netdev_err(netdev, "driver needs to be unloaded and reloaded\n");
                return -EIO;
        }

        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) {
                err = ice_force_phys_link_state(vsi, true);
                if (err) {
                        netdev_err(netdev, "Failed to set physical link up, error %d\n",
                                   err);
                        return err;
                }
        } else {
                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;
                }
                set_bit(ICE_FLAG_NO_MEDIA, vsi->back->flags);
        }

        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);
        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;

        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))
                goto out_rm_features;

        len = skb_transport_header(skb) - skb_network_header(skb);
        if (len & ~(ICE_TXD_IPLEN_MAX))
                goto out_rm_features;

        if (skb->encapsulation) {
                len = skb_inner_network_header(skb) - skb_transport_header(skb);
                if (len & ~(ICE_TXD_L4LEN_MAX))
                        goto out_rm_features;

                len = skb_inner_transport_header(skb) -
                      skb_inner_network_header(skb);
                if (len & ~(ICE_TXD_IPLEN_MAX))
                        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,
};

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,
        .ndo_tx_timeout = ice_tx_timeout,
        .ndo_bpf = ice_xdp,
        .ndo_xdp_xmit = ice_xdp_xmit,
        .ndo_xsk_wakeup = ice_xsk_wakeup,
};