Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...

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

// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2018-2023, Intel Corporation. */

/* Intel(R) Ethernet Connection E800 Series Linux Driver */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <generated/utsrelease.h>
#include <linux/crash_dump.h>
#include "ice.h"
#include "ice_base.h"
#include "ice_lib.h"
#include "ice_fltr.h"
#include "ice_dcb_lib.h"
#include "ice_dcb_nl.h"
#include "devlink/devlink.h"
#include "devlink/devlink_port.h"
#include "ice_sf_eth.h"
#include "ice_hwmon.h"
/* Including ice_trace.h with CREATE_TRACE_POINTS defined will generate the
 * ice tracepoint functions. This must be done exactly once across the
 * ice driver.
 */
#define CREATE_TRACE_POINTS
#include "ice_trace.h"
#include "ice_eswitch.h"
#include "ice_tc_lib.h"
#include "ice_vsi_vlan_ops.h"
#include <net/xdp_sock_drv.h>

#define DRV_SUMMARY     "Intel(R) Ethernet Connection E800 Series Linux Driver"
static const char ice_driver_string[] = DRV_SUMMARY;
static const char ice_copyright[] = "Copyright (c) 2018, Intel Corporation.";

/* DDP Package file located in firmware search paths (e.g. /lib/firmware/) */
#define ICE_DDP_PKG_PATH        "intel/ice/ddp/"
#define ICE_DDP_PKG_FILE        ICE_DDP_PKG_PATH "ice.pkg"

MODULE_DESCRIPTION(DRV_SUMMARY);
MODULE_IMPORT_NS("LIBIE");
MODULE_LICENSE("GPL v2");
MODULE_FIRMWARE(ICE_DDP_PKG_FILE);

static int debug = -1;
module_param(debug, int, 0644);
#ifndef CONFIG_DYNAMIC_DEBUG
MODULE_PARM_DESC(debug, "netif level (0=none,...,16=all), hw debug_mask (0x8XXXXXXX)");
#else
MODULE_PARM_DESC(debug, "netif level (0=none,...,16=all)");
#endif /* !CONFIG_DYNAMIC_DEBUG */

DEFINE_STATIC_KEY_FALSE(ice_xdp_locking_key);
EXPORT_SYMBOL(ice_xdp_locking_key);

/**
 * ice_hw_to_dev - Get device pointer from the hardware structure
 * @hw: pointer to the device HW structure
 *
 * Used to access the device pointer from compilation units which can't easily
 * include the definition of struct ice_pf without leading to circular header
 * dependencies.
 */
struct device *ice_hw_to_dev(struct ice_hw *hw)
{
        struct ice_pf *pf = container_of(hw, struct ice_pf, hw);

        return &pf->pdev->dev;
}

static struct workqueue_struct *ice_wq;
struct workqueue_struct *ice_lag_wq;
static const struct net_device_ops ice_netdev_safe_mode_ops;
static const struct net_device_ops ice_netdev_ops;

static void ice_rebuild(struct ice_pf *pf, enum ice_reset_req reset_type);

static void ice_vsi_release_all(struct ice_pf *pf);

static int ice_rebuild_channels(struct ice_pf *pf);
static void ice_remove_q_channels(struct ice_vsi *vsi, bool rem_adv_fltr);

static int
ice_indr_setup_tc_cb(struct net_device *netdev, struct Qdisc *sch,
                     void *cb_priv, enum tc_setup_type type, void *type_data,
                     void *data,
                     void (*cleanup)(struct flow_block_cb *block_cb));

bool netif_is_ice(const struct net_device *dev)
{
        return dev && (dev->netdev_ops == &ice_netdev_ops ||
                       dev->netdev_ops == &ice_netdev_safe_mode_ops);
}

/**
 * ice_get_tx_pending - returns number of Tx descriptors not processed
 * @ring: the ring of descriptors
 */
static u16 ice_get_tx_pending(struct ice_tx_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_VSI_DOWN, vsi->state))
                return;

        if (!(vsi->netdev && netif_carrier_ok(vsi->netdev)))
                return;

        hw = &vsi->back->hw;

        ice_for_each_txq(vsi, i) {
                struct ice_tx_ring *tx_ring = vsi->tx_rings[i];
                struct ice_ring_stats *ring_stats;

                if (!tx_ring)
                        continue;
                if (ice_ring_ch_enabled(tx_ring))
                        continue;

                ring_stats = tx_ring->ring_stats;
                if (!ring_stats)
                        continue;

                if (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 = ring_stats->stats.pkts & INT_MAX;
                        if (ring_stats->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();
                        ring_stats->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)
{
        struct ice_vsi *vsi;
        u8 *perm_addr;

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

        perm_addr = vsi->port_info->mac.perm_addr;
        return ice_fltr_add_mac_and_broadcast(vsi, perm_addr, ICE_FWD_TO_VSI);
}

/**
 * ice_add_mac_to_sync_list - creates list of MAC addresses to be synced
 * @netdev: the net device on which the sync is happening
 * @addr: MAC address to sync
 *
 * This is a callback function which is called by the in kernel device sync
 * functions (like __dev_uc_sync, __dev_mc_sync, etc). This function only
 * populates the tmp_sync_list, which is later used by ice_add_mac to add the
 * MAC filters from the hardware.
 */
static int ice_add_mac_to_sync_list(struct net_device *netdev, const u8 *addr)
{
        struct ice_netdev_priv *np = netdev_priv(netdev);
        struct ice_vsi *vsi = np->vsi;

        if (ice_fltr_add_mac_to_list(vsi, &vsi->tmp_sync_list, addr,
                                     ICE_FWD_TO_VSI))
                return -EINVAL;

        return 0;
}

/**
 * ice_add_mac_to_unsync_list - creates list of MAC addresses to be unsynced
 * @netdev: the net device on which the unsync is happening
 * @addr: MAC address to unsync
 *
 * This is a callback function which is called by the in kernel device unsync
 * functions (like __dev_uc_unsync, __dev_mc_unsync, etc). This function only
 * populates the tmp_unsync_list, which is later used by ice_remove_mac to
 * delete the MAC filters from the hardware.
 */
static int ice_add_mac_to_unsync_list(struct net_device *netdev, const u8 *addr)
{
        struct ice_netdev_priv *np = netdev_priv(netdev);
        struct ice_vsi *vsi = np->vsi;

        /* Under some circumstances, we might receive a request to delete our
         * own device address from our uc list. Because we store the device
         * address in the VSI's MAC filter list, we need to ignore such
         * requests and not delete our device address from this list.
         */
        if (ether_addr_equal(addr, netdev->dev_addr))
                return 0;

        if (ice_fltr_add_mac_to_list(vsi, &vsi->tmp_unsync_list, addr,
                                     ICE_FWD_TO_VSI))
                return -EINVAL;

        return 0;
}

/**
 * ice_vsi_fltr_changed - check if filter state changed
 * @vsi: VSI to be checked
 *
 * returns true if filter state has changed, false otherwise.
 */
static bool ice_vsi_fltr_changed(struct ice_vsi *vsi)
{
        return test_bit(ICE_VSI_UMAC_FLTR_CHANGED, vsi->state) ||
               test_bit(ICE_VSI_MMAC_FLTR_CHANGED, vsi->state);
}

/**
 * ice_set_promisc - Enable promiscuous mode for a given PF
 * @vsi: the VSI being configured
 * @promisc_m: mask of promiscuous config bits
 *
 */
static int ice_set_promisc(struct ice_vsi *vsi, u8 promisc_m)
{
        int status;

        if (vsi->type != ICE_VSI_PF)
                return 0;

        if (ice_vsi_has_non_zero_vlans(vsi)) {
                promisc_m |= (ICE_PROMISC_VLAN_RX | ICE_PROMISC_VLAN_TX);
                status = ice_fltr_set_vlan_vsi_promisc(&vsi->back->hw, vsi,
                                                       promisc_m);
        } else {
                status = ice_fltr_set_vsi_promisc(&vsi->back->hw, vsi->idx,
                                                  promisc_m, 0);
        }
        if (status && status != -EEXIST)
                return status;

        netdev_dbg(vsi->netdev, "set promisc filter bits for VSI %i: 0x%x\n",
                   vsi->vsi_num, promisc_m);
        return 0;
}

/**
 * ice_clear_promisc - Disable promiscuous mode for a given PF
 * @vsi: the VSI being configured
 * @promisc_m: mask of promiscuous config bits
 *
 */
static int ice_clear_promisc(struct ice_vsi *vsi, u8 promisc_m)
{
        int status;

        if (vsi->type != ICE_VSI_PF)
                return 0;

        if (ice_vsi_has_non_zero_vlans(vsi)) {
                promisc_m |= (ICE_PROMISC_VLAN_RX | ICE_PROMISC_VLAN_TX);
                status = ice_fltr_clear_vlan_vsi_promisc(&vsi->back->hw, vsi,
                                                         promisc_m);
        } else {
                status = ice_fltr_clear_vsi_promisc(&vsi->back->hw, vsi->idx,
                                                    promisc_m, 0);
        }

        netdev_dbg(vsi->netdev, "clear promisc filter bits for VSI %i: 0x%x\n",
                   vsi->vsi_num, promisc_m);
        return status;
}

/**
 * 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 ice_vsi_vlan_ops *vlan_ops = ice_get_compat_vsi_vlan_ops(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;
        u32 changed_flags = 0;
        int err;

        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_UMAC_FLTR_CHANGED, vsi->state);
                clear_bit(ICE_VSI_MMAC_FLTR_CHANGED, vsi->state);

                /* 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 */
        err = ice_fltr_remove_mac_list(vsi, &vsi->tmp_unsync_list);
        ice_fltr_free_list(dev, &vsi->tmp_unsync_list);
        if (err) {
                netdev_err(netdev, "Failed to delete MAC filters\n");
                /* if we failed because of alloc failures, just bail */
                if (err == -ENOMEM)
                        goto out;
        }

        /* Add MAC addresses in the sync list */
        err = ice_fltr_add_mac_list(vsi, &vsi->tmp_sync_list);
        ice_fltr_free_list(dev, &vsi->tmp_sync_list);
        /* If filter is added successfully or already exists, do not go into
         * 'if' condition and report it as error. Instead continue processing
         * rest of the function.
         */
        if (err && err != -EEXIST) {
                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 {
                        goto out;
                }
        }
        err = 0;
        /* check for changes in promiscuous modes */
        if (changed_flags & IFF_ALLMULTI) {
                if (vsi->current_netdev_flags & IFF_ALLMULTI) {
                        err = ice_set_promisc(vsi, ICE_MCAST_PROMISC_BITS);
                        if (err) {
                                vsi->current_netdev_flags &= ~IFF_ALLMULTI;
                                goto out_promisc;
                        }
                } else {
                        /* !(vsi->current_netdev_flags & IFF_ALLMULTI) */
                        err = ice_clear_promisc(vsi, ICE_MCAST_PROMISC_BITS);
                        if (err) {
                                vsi->current_netdev_flags |= IFF_ALLMULTI;
                                goto out_promisc;
                        }
                }
        }

        if (((changed_flags & IFF_PROMISC) || promisc_forced_on) ||
            test_bit(ICE_VSI_PROMISC_CHANGED, vsi->state)) {
                clear_bit(ICE_VSI_PROMISC_CHANGED, vsi->state);
                if (vsi->current_netdev_flags & IFF_PROMISC) {
                        /* Apply Rx filter rule to get traffic from wire */
                        if (!ice_is_dflt_vsi_in_use(vsi->port_info)) {
                                err = ice_set_dflt_vsi(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;
                                }
                                err = 0;
                                vlan_ops->dis_rx_filtering(vsi);

                                /* promiscuous mode implies allmulticast so
                                 * that VSIs that are in promiscuous mode are
                                 * subscribed to multicast packets coming to
                                 * the port
                                 */
                                err = ice_set_promisc(vsi,
                                                      ICE_MCAST_PROMISC_BITS);
                                if (err)
                                        goto out_promisc;
                        }
                } else {
                        /* Clear Rx filter to remove traffic from wire */
                        if (ice_is_vsi_dflt_vsi(vsi)) {
                                err = ice_clear_dflt_vsi(vsi);
                                if (err) {
                                        netdev_err(netdev, "Error %d clearing default VSI %i Rx rule\n",
                                                   err, vsi->vsi_num);
                                        vsi->current_netdev_flags |=
                                                IFF_PROMISC;
                                        goto out_promisc;
                                }
                                if (vsi->netdev->features &
                                    NETIF_F_HW_VLAN_CTAG_FILTER)
                                        vlan_ops->ena_rx_filtering(vsi);
                        }

                        /* disable allmulti here, but only if allmulti is not
                         * still enabled for the netdev
                         */
                        if (!(vsi->current_netdev_flags & IFF_ALLMULTI)) {
                                err = ice_clear_promisc(vsi,
                                                        ICE_MCAST_PROMISC_BITS);
                                if (err) {
                                        netdev_err(netdev, "Error %d clearing multicast promiscuous on VSI %i\n",
                                                   err, vsi->vsi_num);
                                }
                        }
                }
        }
        goto exit;

out_promisc:
        set_bit(ICE_VSI_PROMISC_CHANGED, vsi->state);
        goto exit;
out:
        /* if something went wrong then set the changed flag so we try again */
        set_bit(ICE_VSI_UMAC_FLTR_CHANGED, vsi->state);
        set_bit(ICE_VSI_MMAC_FLTR_CHANGED, vsi->state);
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 node;
        int v;

        ice_for_each_vsi(pf, v)
                if (pf->vsi[v])
                        ice_dis_vsi(pf->vsi[v], locked);

        for (node = 0; node < ICE_MAX_PF_AGG_NODES; node++)
                pf->pf_agg_node[node].num_vsis = 0;

        for (node = 0; node < ICE_MAX_VF_AGG_NODES; node++)
                pf->vf_agg_node[node].num_vsis = 0;
}

/**
 * ice_prepare_for_reset - prep for reset
 * @pf: board private structure
 * @reset_type: reset type requested
 *
 * Inform or close all dependent features in prep for reset.
 */
static void
ice_prepare_for_reset(struct ice_pf *pf, enum ice_reset_req reset_type)
{
        struct ice_hw *hw = &pf->hw;
        struct ice_vsi *vsi;
        struct ice_vf *vf;
        unsigned int bkt;

        dev_dbg(ice_pf_to_dev(pf), "reset_type=%d\n", reset_type);

        /* already prepared for reset */
        if (test_bit(ICE_PREPARED_FOR_RESET, pf->state))
                return;

        synchronize_irq(pf->oicr_irq.virq);

        ice_unplug_aux_dev(pf);

        /* Notify VFs of impending reset */
        if (ice_check_sq_alive(hw, &hw->mailboxq))
                ice_vc_notify_reset(pf);

        /* Disable VFs until reset is completed */
        mutex_lock(&pf->vfs.table_lock);
        ice_for_each_vf(pf, bkt, vf)
                ice_set_vf_state_dis(vf);
        mutex_unlock(&pf->vfs.table_lock);

        if (ice_is_eswitch_mode_switchdev(pf)) {
                rtnl_lock();
                ice_eswitch_br_fdb_flush(pf->eswitch.br_offloads->bridge);
                rtnl_unlock();
        }

        /* release ADQ specific HW and SW resources */
        vsi = ice_get_main_vsi(pf);
        if (!vsi)
                goto skip;

        /* to be on safe side, reset orig_rss_size so that normal flow
         * of deciding rss_size can take precedence
         */
        vsi->orig_rss_size = 0;

        if (test_bit(ICE_FLAG_TC_MQPRIO, pf->flags)) {
                if (reset_type == ICE_RESET_PFR) {
                        vsi->old_ena_tc = vsi->all_enatc;
                        vsi->old_numtc = vsi->all_numtc;
                } else {
                        ice_remove_q_channels(vsi, true);

                        /* for other reset type, do not support channel rebuild
                         * hence reset needed info
                         */
                        vsi->old_ena_tc = 0;
                        vsi->all_enatc = 0;
                        vsi->old_numtc = 0;
                        vsi->all_numtc = 0;
                        vsi->req_txq = 0;
                        vsi->req_rxq = 0;
                        clear_bit(ICE_FLAG_TC_MQPRIO, pf->flags);
                        memset(&vsi->mqprio_qopt, 0, sizeof(vsi->mqprio_qopt));
                }
        }

        if (vsi->netdev)
                netif_device_detach(vsi->netdev);
skip:

        /* clear SW filtering DB */
        ice_clear_hw_tbls(hw);
        /* disable the VSIs and their queues that are not already DOWN */
        set_bit(ICE_VSI_REBUILD_PENDING, ice_get_main_vsi(pf)->state);
        ice_pf_dis_all_vsi(pf, false);

        if (test_bit(ICE_FLAG_PTP_SUPPORTED, pf->flags))
                ice_ptp_prepare_for_reset(pf, reset_type);

        if (ice_is_feature_supported(pf, ICE_F_GNSS))
                ice_gnss_exit(pf);

        if (hw->port_info)
                ice_sched_clear_port(hw->port_info);

        ice_shutdown_all_ctrlq(hw, false);

        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);

        if (pf->lag && pf->lag->bonded && reset_type == ICE_RESET_PFR) {
                dev_dbg(dev, "PFR on a bonded interface, promoting to CORER\n");
                reset_type = ICE_RESET_CORER;
        }

        ice_prepare_for_reset(pf, reset_type);

        /* 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);
                wake_up(&pf->reset_wait_queue);
                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);
                wake_up(&pf->reset_wait_queue);
                ice_reset_all_vfs(pf);
        }
}

/**
 * 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, reset_type);

                /* 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);
                        wake_up(&pf->reset_wait_queue);
                        ice_reset_all_vfs(pf);
                }

                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 (pf->lag && pf->lag->bonded) {
                        dev_dbg(ice_pf_to_dev(pf), "PFR on a bonded interface, promoting to CORER\n");
                        reset_type = ICE_RESET_CORER;
                }
        }
        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, "Potential misconfiguration of the Ethernet port detected. If it was not intended, please use the Intel (R) Ethernet Port Configuration Tool to address the issue.\n");
                break;
        case ICE_AQ_LINK_TOPO_UNSUPP_MEDIA:
                if (test_bit(ICE_FLAG_LINK_LENIENT_MODE_ENA, vsi->back->flags))
                        netdev_warn(vsi->netdev, "An unsupported module type was detected. Refer to the Intel(R) Ethernet Adapters and Devices User Guide for a list of supported modules\n");
                else
                        netdev_err(vsi->netdev, "Rx/Tx is disabled on this device because an unsupported module type was detected. Refer to the Intel(R) Ethernet Adapters and Devices User Guide for a list of supported modules.\n");
                break;
        default:
                break;
        }
}

/**
 * ice_print_link_msg - print link up or down message
 * @vsi: the VSI whose link status is being queried
 * @isup: boolean for if the link is now up or down
 */
void ice_print_link_msg(struct ice_vsi *vsi, bool isup)
{
        struct ice_aqc_get_phy_caps_data *caps;
        const char *an_advertised;
        const char *fec_req;
        const char *speed;
        const char *fec;
        const char *fc;
        const char *an;
        int status;

        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_200GB:
                speed = "200 G";
                break;
        case ICE_AQ_LINK_SPEED_100GB:
                speed = "100 G";
                break;
        case ICE_AQ_LINK_SPEED_50GB:
                speed = "50 G";
                break;
        case ICE_AQ_LINK_SPEED_40GB:
                speed = "40 G";
                break;
        case ICE_AQ_LINK_SPEED_25GB:
                speed = "25 G";
                break;
        case ICE_AQ_LINK_SPEED_20GB:
                speed = "20 G";
                break;
        case ICE_AQ_LINK_SPEED_10GB:
                speed = "10 G";
                break;
        case ICE_AQ_LINK_SPEED_5GB:
                speed = "5 G";
                break;
        case ICE_AQ_LINK_SPEED_2500MB:
                speed = "2.5 G";
                break;
        case ICE_AQ_LINK_SPEED_1000MB:
                speed = "1 G";
                break;
        case ICE_AQ_LINK_SPEED_100MB:
                speed = "100 M";
                break;
        default:
                speed = "Unknown ";
                break;
        }

        switch (vsi->port_info->fc.current_mode) {
        case ICE_FC_FULL:
                fc = "Rx/Tx";
                break;
        case ICE_FC_TX_PAUSE:
                fc = "Tx";
                break;
        case ICE_FC_RX_PAUSE:
                fc = "Rx";
                break;
        case ICE_FC_NONE:
                fc = "None";
                break;
        default:
                fc = "Unknown";
                break;
        }

        /* Get FEC mode based on negotiated link info */
        switch (vsi->port_info->phy.link_info.fec_info) {
        case ICE_AQ_LINK_25G_RS_528_FEC_EN:
        case ICE_AQ_LINK_25G_RS_544_FEC_EN:
                fec = "RS-FEC";
                break;
        case ICE_AQ_LINK_25G_KR_FEC_EN:
                fec = "FC-FEC/BASE-R";
                break;
        default:
                fec = "NONE";
                break;
        }

        /* check if autoneg completed, might be false due to not supported */
        if (vsi->port_info->phy.link_info.an_info & ICE_AQ_AN_COMPLETED)
                an = "True";
        else
                an = "False";

        /* Get FEC mode requested based on PHY caps last SW configuration */
        caps = kzalloc(sizeof(*caps), GFP_KERNEL);
        if (!caps) {
                fec_req = "Unknown";
                an_advertised = "Unknown";
                goto done;
        }

        status = ice_aq_get_phy_caps(vsi->port_info, false,
                                     ICE_AQC_REPORT_ACTIVE_CFG, caps, NULL);
        if (status)
                netdev_info(vsi->netdev, "Get phy capability failed.\n");

        an_advertised = ice_is_phy_caps_an_enabled(caps) ? "On" : "Off";

        if (caps->link_fec_options & ICE_AQC_PHY_FEC_25G_RS_528_REQ ||
            caps->link_fec_options & ICE_AQC_PHY_FEC_25G_RS_544_REQ)
                fec_req = "RS-FEC";
        else if (caps->link_fec_options & ICE_AQC_PHY_FEC_10G_KR_40G_KR4_REQ ||
                 caps->link_fec_options & ICE_AQC_PHY_FEC_25G_KR_REQ)
                fec_req = "FC-FEC/BASE-R";
        else
                fec_req = "NONE";

        kfree(caps);

done:
        netdev_info(vsi->netdev, "NIC Link is up %sbps Full Duplex, Requested FEC: %s, Negotiated FEC: %s, Autoneg Advertised: %s, Autoneg Negotiated: %s, Flow Control: %s\n",
                    speed, fec_req, fec, an_advertised, an, fc);
        ice_print_topo_conflict(vsi);
}

/**
 * ice_vsi_link_event - update the VSI's netdev
 * @vsi: the VSI on which the link event occurred
 * @link_up: whether or not the VSI needs to be set up or down
 */
static void ice_vsi_link_event(struct ice_vsi *vsi, bool link_up)
{
        if (!vsi)
                return;

        if (test_bit(ICE_VSI_DOWN, vsi->state) || !vsi->netdev)
                return;

        if (vsi->type == ICE_VSI_PF) {
                if (link_up == netif_carrier_ok(vsi->netdev))
                        return;

                if (link_up) {
                        netif_carrier_on(vsi->netdev);
                        netif_tx_wake_all_queues(vsi->netdev);
                } else {
                        netif_carrier_off(vsi->netdev);
                        netif_tx_stop_all_queues(vsi->netdev);
                }
        }
}

/**
 * ice_set_dflt_mib - send a default config MIB to the FW
 * @pf: private PF struct
 *
 * This function sends a default configuration MIB to the FW.
 *
 * If this function errors out at any point, the driver is still able to
 * function.  The main impact is that LFC may not operate as expected.
 * Therefore an error state in this function should be treated with a DBG
 * message and continue on with driver rebuild/reenable.
 */
static void ice_set_dflt_mib(struct ice_pf *pf)
{
        struct device *dev = ice_pf_to_dev(pf);
        u8 mib_type, *buf, *lldpmib = NULL;
        u16 len, typelen, offset = 0;
        struct ice_lldp_org_tlv *tlv;
        struct ice_hw *hw = &pf->hw;
        u32 ouisubtype;

        mib_type = SET_LOCAL_MIB_TYPE_LOCAL_MIB;
        lldpmib = kzalloc(ICE_LLDPDU_SIZE, GFP_KERNEL);
        if (!lldpmib) {
                dev_dbg(dev, "%s Failed to allocate MIB memory\n",
                        __func__);
                return;
        }

        /* Add ETS CFG TLV */
        tlv = (struct ice_lldp_org_tlv *)lldpmib;
        typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
                   ICE_IEEE_ETS_TLV_LEN);
        tlv->typelen = htons(typelen);
        ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
                      ICE_IEEE_SUBTYPE_ETS_CFG);
        tlv->ouisubtype = htonl(ouisubtype);

        buf = tlv->tlvinfo;
        buf[0] = 0;

        /* ETS CFG all UPs map to TC 0. Next 4 (1 - 4) Octets = 0.
         * Octets 5 - 12 are BW values, set octet 5 to 100% BW.
         * Octets 13 - 20 are TSA values - leave as zeros
         */
        buf[5] = 0x64;
        len = FIELD_GET(ICE_LLDP_TLV_LEN_M, typelen);
        offset += len + 2;
        tlv = (struct ice_lldp_org_tlv *)
                ((char *)tlv + sizeof(tlv->typelen) + len);

        /* Add ETS REC TLV */
        buf = tlv->tlvinfo;
        tlv->typelen = htons(typelen);

        ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
                      ICE_IEEE_SUBTYPE_ETS_REC);
        tlv->ouisubtype = htonl(ouisubtype);

        /* First octet of buf is reserved
         * Octets 1 - 4 map UP to TC - all UPs map to zero
         * Octets 5 - 12 are BW values - set TC 0 to 100%.
         * Octets 13 - 20 are TSA value - leave as zeros
         */
        buf[5] = 0x64;
        offset += len + 2;
        tlv = (struct ice_lldp_org_tlv *)
                ((char *)tlv + sizeof(tlv->typelen) + len);

        /* Add PFC CFG TLV */
        typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
                   ICE_IEEE_PFC_TLV_LEN);
        tlv->typelen = htons(typelen);

        ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
                      ICE_IEEE_SUBTYPE_PFC_CFG);
        tlv->ouisubtype = htonl(ouisubtype);

        /* Octet 1 left as all zeros - PFC disabled */
        buf[0] = 0x08;
        len = FIELD_GET(ICE_LLDP_TLV_LEN_M, typelen);
        offset += len + 2;

        if (ice_aq_set_lldp_mib(hw, mib_type, (void *)lldpmib, offset, NULL))
                dev_dbg(dev, "%s Failed to set default LLDP MIB\n", __func__);

        kfree(lldpmib);
}

/**
 * ice_check_phy_fw_load - check if PHY FW load failed
 * @pf: pointer to PF struct
 * @link_cfg_err: bitmap from the link info structure
 *
 * check if external PHY FW load failed and print an error message if it did
 */
static void ice_check_phy_fw_load(struct ice_pf *pf, u8 link_cfg_err)
{
        if (!(link_cfg_err & ICE_AQ_LINK_EXTERNAL_PHY_LOAD_FAILURE)) {
                clear_bit(ICE_FLAG_PHY_FW_LOAD_FAILED, pf->flags);
                return;
        }

        if (test_bit(ICE_FLAG_PHY_FW_LOAD_FAILED, pf->flags))
                return;

        if (link_cfg_err & ICE_AQ_LINK_EXTERNAL_PHY_LOAD_FAILURE) {
                dev_err(ice_pf_to_dev(pf), "Device failed to load the FW for the external PHY. Please download and install the latest NVM for your device and try again\n");
                set_bit(ICE_FLAG_PHY_FW_LOAD_FAILED, pf->flags);
        }
}

/**
 * ice_check_module_power
 * @pf: pointer to PF struct
 * @link_cfg_err: bitmap from the link info structure
 *
 * check module power level returned by a previous call to aq_get_link_info
 * and print error messages if module power level is not supported
 */
static void ice_check_module_power(struct ice_pf *pf, u8 link_cfg_err)
{
        /* if module power level is supported, clear the flag */
        if (!(link_cfg_err & (ICE_AQ_LINK_INVAL_MAX_POWER_LIMIT |
                              ICE_AQ_LINK_MODULE_POWER_UNSUPPORTED))) {
                clear_bit(ICE_FLAG_MOD_POWER_UNSUPPORTED, pf->flags);
                return;
        }

        /* if ICE_FLAG_MOD_POWER_UNSUPPORTED was previously set and the
         * above block didn't clear this bit, there's nothing to do
         */
        if (test_bit(ICE_FLAG_MOD_POWER_UNSUPPORTED, pf->flags))
                return;

        if (link_cfg_err & ICE_AQ_LINK_INVAL_MAX_POWER_LIMIT) {
                dev_err(ice_pf_to_dev(pf), "The installed module is incompatible with the device's NVM image. Cannot start link\n");
                set_bit(ICE_FLAG_MOD_POWER_UNSUPPORTED, pf->flags);
        } else if (link_cfg_err & ICE_AQ_LINK_MODULE_POWER_UNSUPPORTED) {
                dev_err(ice_pf_to_dev(pf), "The module's power requirements exceed the device's power supply. Cannot start link\n");
                set_bit(ICE_FLAG_MOD_POWER_UNSUPPORTED, pf->flags);
        }
}

/**
 * ice_check_link_cfg_err - check if link configuration failed
 * @pf: pointer to the PF struct
 * @link_cfg_err: bitmap from the link info structure
 *
 * print if any link configuration failure happens due to the value in the
 * link_cfg_err parameter in the link info structure
 */
static void ice_check_link_cfg_err(struct ice_pf *pf, u8 link_cfg_err)
{
        ice_check_module_power(pf, link_cfg_err);
        ice_check_phy_fw_load(pf, link_cfg_err);
}

/**
 * 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 status;

        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
         */
        status = ice_update_link_info(pi);
        if (status)
                dev_dbg(dev, "Failed to update link status on port %d, err %d aq_err %s\n",
                        pi->lport, status,
                        ice_aq_str(pi->hw->adminq.sq_last_status));

        ice_check_link_cfg_err(pf, pi->phy.link_info.link_cfg_err);

        /* Check if the link state is up after updating link info, and treat
         * this event as an UP event since the link is actually UP now.
         */
        if (phy_info->link_info.link_info & ICE_AQ_LINK_UP)
                link_up = true;

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

        /* turn off PHY if media was removed */
        if (!test_bit(ICE_FLAG_NO_MEDIA, pf->flags) &&
            !(pi->phy.link_info.link_info & ICE_AQ_MEDIA_AVAILABLE)) {
                set_bit(ICE_FLAG_NO_MEDIA, pf->flags);
                ice_set_link(vsi, false);
        }

        /* 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 0;

        ice_ptp_link_change(pf, pf->hw.pf_id, link_up);

        if (ice_is_dcb_active(pf)) {
                if (test_bit(ICE_FLAG_DCB_ENA, pf->flags))
                        ice_dcb_rebuild(pf);
        } else {
                if (link_up)
                        ice_set_dflt_mib(pf);
        }
        ice_vsi_link_event(vsi, link_up);
        ice_print_link_msg(vsi, link_up);

        ice_vc_notify_link_state(pf);

        return 0;
}

/**
 * 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 |
                       ICE_AQ_LINK_EVENT_PHY_FW_LOAD_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_get_fwlog_data - copy the FW log data from ARQ event
 * @pf: PF that the FW log event is associated with
 * @event: event structure containing FW log data
 */
static void
ice_get_fwlog_data(struct ice_pf *pf, struct ice_rq_event_info *event)
{
        struct ice_fwlog_data *fwlog;
        struct ice_hw *hw = &pf->hw;

        fwlog = &hw->fwlog_ring.rings[hw->fwlog_ring.tail];

        memset(fwlog->data, 0, PAGE_SIZE);
        fwlog->data_size = le16_to_cpu(event->desc.datalen);

        memcpy(fwlog->data, event->msg_buf, fwlog->data_size);
        ice_fwlog_ring_increment(&hw->fwlog_ring.tail, hw->fwlog_ring.size);

        if (ice_fwlog_ring_full(&hw->fwlog_ring)) {
                /* the rings are full so bump the head to create room */
                ice_fwlog_ring_increment(&hw->fwlog_ring.head,
                                         hw->fwlog_ring.size);
        }
}

/**
 * ice_aq_prep_for_event - Prepare to wait for an AdminQ event from firmware
 * @pf: pointer to the PF private structure
 * @task: intermediate helper storage and identifier for waiting
 * @opcode: the opcode to wait for
 *
 * Prepares to wait for a specific AdminQ completion event on the ARQ for
 * a given PF. Actual wait would be done by a call to ice_aq_wait_for_event().
 *
 * Calls are separated to allow caller registering for event before sending
 * the command, which mitigates a race between registering and FW responding.
 *
 * To obtain only the descriptor contents, pass an task->event with null
 * msg_buf. If the complete data buffer is desired, allocate the
 * task->event.msg_buf with enough space ahead of time.
 */
void ice_aq_prep_for_event(struct ice_pf *pf, struct ice_aq_task *task,
                           u16 opcode)
{
        INIT_HLIST_NODE(&task->entry);
        task->opcode = opcode;
        task->state = ICE_AQ_TASK_WAITING;

        spin_lock_bh(&pf->aq_wait_lock);
        hlist_add_head(&task->entry, &pf->aq_wait_list);
        spin_unlock_bh(&pf->aq_wait_lock);
}

/**
 * ice_aq_wait_for_event - Wait for an AdminQ event from firmware
 * @pf: pointer to the PF private structure
 * @task: ptr prepared by ice_aq_prep_for_event()
 * @timeout: how long to wait, in jiffies
 *
 * Waits for a specific AdminQ completion event on the ARQ for a given PF. The
 * current thread will be put to sleep until the specified event occurs or
 * until the given timeout is reached.
 *
 * Returns: zero on success, or a negative error code on failure.
 */
int ice_aq_wait_for_event(struct ice_pf *pf, struct ice_aq_task *task,
                          unsigned long timeout)
{
        enum ice_aq_task_state *state = &task->state;
        struct device *dev = ice_pf_to_dev(pf);
        unsigned long start = jiffies;
        long ret;
        int err;

        ret = wait_event_interruptible_timeout(pf->aq_wait_queue,
                                               *state != ICE_AQ_TASK_WAITING,
                                               timeout);
        switch (*state) {
        case ICE_AQ_TASK_NOT_PREPARED:
                WARN(1, "call to %s without ice_aq_prep_for_event()", __func__);
                err = -EINVAL;
                break;
        case ICE_AQ_TASK_WAITING:
                err = ret < 0 ? ret : -ETIMEDOUT;
                break;
        case ICE_AQ_TASK_CANCELED:
                err = ret < 0 ? ret : -ECANCELED;
                break;
        case ICE_AQ_TASK_COMPLETE:
                err = ret < 0 ? ret : 0;
                break;
        default:
                WARN(1, "Unexpected AdminQ wait task state %u", *state);
                err = -EINVAL;
                break;
        }

        dev_dbg(dev, "Waited %u msecs (max %u msecs) for firmware response to op 0x%04x\n",
                jiffies_to_msecs(jiffies - start),
                jiffies_to_msecs(timeout),
                task->opcode);

        spin_lock_bh(&pf->aq_wait_lock);
        hlist_del(&task->entry);
        spin_unlock_bh(&pf->aq_wait_lock);

        return err;
}

/**
 * ice_aq_check_events - Check if any thread is waiting for an AdminQ event
 * @pf: pointer to the PF private structure
 * @opcode: the opcode of the event
 * @event: the event to check
 *
 * Loops over the current list of pending threads waiting for an AdminQ event.
 * For each matching task, copy the contents of the event into the task
 * structure and wake up the thread.
 *
 * If multiple threads wait for the same opcode, they will all be woken up.
 *
 * Note that event->msg_buf will only be duplicated if the event has a buffer
 * with enough space already allocated. Otherwise, only the descriptor and
 * message length will be copied.
 *
 * Returns: true if an event was found, false otherwise
 */
static void ice_aq_check_events(struct ice_pf *pf, u16 opcode,
                                struct ice_rq_event_info *event)
{
        struct ice_rq_event_info *task_ev;
        struct ice_aq_task *task;
        bool found = false;

        spin_lock_bh(&pf->aq_wait_lock);
        hlist_for_each_entry(task, &pf->aq_wait_list, entry) {
                if (task->state != ICE_AQ_TASK_WAITING)
                        continue;
                if (task->opcode != opcode)
                        continue;

                task_ev = &task->event;
                memcpy(&task_ev->desc, &event->desc, sizeof(event->desc));
                task_ev->msg_len = event->msg_len;

                /* Only copy the data buffer if a destination was set */
                if (task_ev->msg_buf && task_ev->buf_len >= event->buf_len) {
                        memcpy(task_ev->msg_buf, event->msg_buf,
                               event->buf_len);
                        task_ev->buf_len = event->buf_len;
                }

                task->state = ICE_AQ_TASK_COMPLETE;
                found = true;
        }
        spin_unlock_bh(&pf->aq_wait_lock);

        if (found)
                wake_up(&pf->aq_wait_queue);
}

/**
 * ice_aq_cancel_waiting_tasks - Immediately cancel all waiting tasks
 * @pf: the PF private structure
 *
 * Set all waiting tasks to ICE_AQ_TASK_CANCELED, and wake up their threads.
 * This will then cause ice_aq_wait_for_event to exit with -ECANCELED.
 */
static void ice_aq_cancel_waiting_tasks(struct ice_pf *pf)
{
        struct ice_aq_task *task;

        spin_lock_bh(&pf->aq_wait_lock);
        hlist_for_each_entry(task, &pf->aq_wait_list, entry)
                task->state = ICE_AQ_TASK_CANCELED;
        spin_unlock_bh(&pf->aq_wait_lock);

        wake_up(&pf->aq_wait_queue);
}

#define ICE_MBX_OVERFLOW_WATERMARK 64

/**
 * __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_SB:
                cq = &hw->sbq;
                qtype = "Sideband";
                break;
        case ICE_CTL_Q_MAILBOX:
                cq = &hw->mailboxq;
                qtype = "Mailbox";
                /* we are going to try to detect a malicious VF, so set the
                 * state to begin detection
                 */
                hw->mbx_snapshot.mbx_buf.state = ICE_MAL_VF_DETECT_STATE_NEW_SNAPSHOT;
                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 {
                struct ice_mbx_data data = {};
                u16 opcode;
                int ret;

                ret = ice_clean_rq_elem(hw, cq, &event, &pending);
                if (ret == -EALREADY)
                        break;
                if (ret) {
                        dev_err(dev, "%s Receive Queue event error %d\n", qtype,
                                ret);
                        break;
                }

                opcode = le16_to_cpu(event.desc.opcode);

                /* Notify any thread that might be waiting for this event */
                ice_aq_check_events(pf, opcode, &event);

                switch (opcode) {
                case ice_aqc_opc_get_link_status:
                        if (ice_handle_link_event(pf, &event))
                                dev_err(dev, "Could not handle link event\n");
                        break;
                case ice_aqc_opc_event_lan_overflow:
                        ice_vf_lan_overflow_event(pf, &event);
                        break;
                case ice_mbx_opc_send_msg_to_pf:
                        if (ice_is_feature_supported(pf, ICE_F_MBX_LIMIT)) {
                                ice_vc_process_vf_msg(pf, &event, NULL);
                                ice_mbx_vf_dec_trig_e830(hw, &event);
                        } else {
                                u16 val = hw->mailboxq.num_rq_entries;

                                data.max_num_msgs_mbx = val;
                                val = ICE_MBX_OVERFLOW_WATERMARK;
                                data.async_watermark_val = val;
                                data.num_msg_proc = i;
                                data.num_pending_arq = pending;

                                ice_vc_process_vf_msg(pf, &event, &data);
                        }
                        break;
                case ice_aqc_opc_fw_logs_event:
                        ice_get_fwlog_data(pf, &event);
                        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_clean_sbq_subtask - clean the Sideband Queue rings
 * @pf: board private structure
 */
static void ice_clean_sbq_subtask(struct ice_pf *pf)
{
        struct ice_hw *hw = &pf->hw;

        /* if mac_type is not generic, sideband is not supported
         * and there's nothing to do here
         */
        if (!ice_is_generic_mac(hw)) {
                clear_bit(ICE_SIDEBANDQ_EVENT_PENDING, pf->state);
                return;
        }

        if (!test_bit(ICE_SIDEBANDQ_EVENT_PENDING, pf->state))
                return;

        if (__ice_clean_ctrlq(pf, ICE_CTL_Q_SB))
                return;

        clear_bit(ICE_SIDEBANDQ_EVENT_PENDING, pf->state);

        if (ice_ctrlq_pending(hw, &hw->sbq))
                __ice_clean_ctrlq(pf, ICE_CTL_Q_SB);

        ice_flush(hw);
}

/**
 * ice_service_task_schedule - schedule the service task to wake up
 * @pf: board private structure
 *
 * If not already scheduled, this puts the task into the work queue.
 */
void ice_service_task_schedule(struct ice_pf *pf)
{
        if (!test_bit(ICE_SERVICE_DIS, pf->state) &&
            !test_and_set_bit(ICE_SERVICE_SCHED, pf->state) &&
            !test_bit(ICE_NEEDS_RESTART, pf->state))
                queue_work(ice_wq, &pf->serv_task);
}

/**
 * ice_service_task_complete - finish up the service task
 * @pf: board private structure
 */
static void ice_service_task_complete(struct ice_pf *pf)
{
        WARN_ON(!test_bit(ICE_SERVICE_SCHED, pf->state));

        /* force memory (pf->state) to sync before next service task */
        smp_mb__before_atomic();
        clear_bit(ICE_SERVICE_SCHED, pf->state);
}

/**
 * ice_service_task_stop - stop service task and cancel works
 * @pf: board private structure
 *
 * Return 0 if the ICE_SERVICE_DIS bit was not already set,
 * 1 otherwise.
 */
static int ice_service_task_stop(struct ice_pf *pf)
{
        int ret;

        ret = test_and_set_bit(ICE_SERVICE_DIS, pf->state);

        if (pf->serv_tmr.function)
                del_timer_sync(&pf->serv_tmr);
        if (pf->serv_task.func)
                cancel_work_sync(&pf->serv_task);

        clear_bit(ICE_SERVICE_SCHED, pf->state);
        return ret;
}

/**
 * ice_service_task_restart - restart service task and schedule works
 * @pf: board private structure
 *
 * This function is needed for suspend and resume works (e.g WoL scenario)
 */
static void ice_service_task_restart(struct ice_pf *pf)
{
        clear_bit(ICE_SERVICE_DIS, pf->state);
        ice_service_task_schedule(pf);
}

/**
 * ice_service_timer - timer callback to schedule service task
 * @t: pointer to timer_list
 */
static void ice_service_timer(struct timer_list *t)
{
        struct ice_pf *pf = from_timer(pf, t, serv_tmr);

        mod_timer(&pf->serv_tmr, round_jiffies(pf->serv_tmr_period + jiffies));
        ice_service_task_schedule(pf);
}

/**
 * ice_mdd_maybe_reset_vf - reset VF after MDD event
 * @pf: pointer to the PF structure
 * @vf: pointer to the VF structure
 * @reset_vf_tx: whether Tx MDD has occurred
 * @reset_vf_rx: whether Rx MDD has occurred
 *
 * Since the queue can get stuck on VF MDD events, the PF can be configured to
 * automatically reset the VF by enabling the private ethtool flag
 * mdd-auto-reset-vf.
 */
static void ice_mdd_maybe_reset_vf(struct ice_pf *pf, struct ice_vf *vf,
                                   bool reset_vf_tx, bool reset_vf_rx)
{
        struct device *dev = ice_pf_to_dev(pf);

        if (!test_bit(ICE_FLAG_MDD_AUTO_RESET_VF, pf->flags))
                return;

        /* VF MDD event counters will be cleared by reset, so print the event
         * prior to reset.
         */
        if (reset_vf_tx)
                ice_print_vf_tx_mdd_event(vf);

        if (reset_vf_rx)
                ice_print_vf_rx_mdd_event(vf);

        dev_info(dev, "PF-to-VF reset on PF %d VF %d due to MDD event\n",
                 pf->hw.pf_id, vf->vf_id);
        ice_reset_vf(vf, ICE_VF_RESET_NOTIFY | ICE_VF_RESET_LOCK);
}

/**
 * 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;
        struct ice_vf *vf;
        unsigned int bkt;
        u32 reg;

        if (!test_and_clear_bit(ICE_MDD_EVENT_PENDING, pf->state)) {
                /* Since the VF MDD event logging is rate limited, check if
                 * there are pending MDD events.
                 */
                ice_print_vfs_mdd_events(pf);
                return;
        }

        /* find what triggered an MDD event */
        reg = rd32(hw, GL_MDET_TX_PQM);
        if (reg & GL_MDET_TX_PQM_VALID_M) {
                u8 pf_num = FIELD_GET(GL_MDET_TX_PQM_PF_NUM_M, reg);
                u16 vf_num = FIELD_GET(GL_MDET_TX_PQM_VF_NUM_M, reg);
                u8 event = FIELD_GET(GL_MDET_TX_PQM_MAL_TYPE_M, reg);
                u16 queue = FIELD_GET(GL_MDET_TX_PQM_QNUM_M, reg);

                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_BY_MAC(hw));
        if (reg & GL_MDET_TX_TCLAN_VALID_M) {
                u8 pf_num = FIELD_GET(GL_MDET_TX_TCLAN_PF_NUM_M, reg);
                u16 vf_num = FIELD_GET(GL_MDET_TX_TCLAN_VF_NUM_M, reg);
                u8 event = FIELD_GET(GL_MDET_TX_TCLAN_MAL_TYPE_M, reg);
                u16 queue = FIELD_GET(GL_MDET_TX_TCLAN_QNUM_M, reg);

                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_BY_MAC(hw), U32_MAX);
        }

        reg = rd32(hw, GL_MDET_RX);
        if (reg & GL_MDET_RX_VALID_M) {
                u8 pf_num = FIELD_GET(GL_MDET_RX_PF_NUM_M, reg);
                u16 vf_num = FIELD_GET(GL_MDET_RX_VF_NUM_M, reg);
                u8 event = FIELD_GET(GL_MDET_RX_MAL_TYPE_M, reg);
                u16 queue = FIELD_GET(GL_MDET_RX_QNUM_M, reg);

                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_BY_MAC(hw));
        if (reg & PF_MDET_TX_TCLAN_VALID_M) {
                wr32(hw, PF_MDET_TX_TCLAN_BY_MAC(hw), 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
         */
        mutex_lock(&pf->vfs.table_lock);
        ice_for_each_vf(pf, bkt, vf) {
                bool reset_vf_tx = false, reset_vf_rx = false;

                reg = rd32(hw, VP_MDET_TX_PQM(vf->vf_id));
                if (reg & VP_MDET_TX_PQM_VALID_M) {
                        wr32(hw, VP_MDET_TX_PQM(vf->vf_id), 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",
                                         vf->vf_id);

                        reset_vf_tx = true;
                }

                reg = rd32(hw, VP_MDET_TX_TCLAN(vf->vf_id));
                if (reg & VP_MDET_TX_TCLAN_VALID_M) {
                        wr32(hw, VP_MDET_TX_TCLAN(vf->vf_id), 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",
                                         vf->vf_id);

                        reset_vf_tx = true;
                }

                reg = rd32(hw, VP_MDET_TX_TDPU(vf->vf_id));
                if (reg & VP_MDET_TX_TDPU_VALID_M) {
                        wr32(hw, VP_MDET_TX_TDPU(vf->vf_id), 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",
                                         vf->vf_id);

                        reset_vf_tx = true;
                }

                reg = rd32(hw, VP_MDET_RX(vf->vf_id));
                if (reg & VP_MDET_RX_VALID_M) {
                        wr32(hw, VP_MDET_RX(vf->vf_id), 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",
                                         vf->vf_id);

                        reset_vf_rx = true;
                }

                if (reset_vf_tx || reset_vf_rx)
                        ice_mdd_maybe_reset_vf(pf, vf, reset_vf_tx,
                                               reset_vf_rx);
        }
        mutex_unlock(&pf->vfs.table_lock);

        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_ACTIVE_CFG, pcaps,
                                      NULL);
        if (retcode) {
                dev_err(dev, "Failed to get phy capabilities, VSI %d error %d\n",
                        vsi->vsi_num, retcode);
                retcode = -EIO;
                goto out;
        }

        /* No change in link */
        if (link_up == !!(pcaps->caps & ICE_AQC_PHY_EN_LINK) &&
            link_up == !!(pi->phy.link_info.link_info & ICE_AQ_LINK_UP))
                goto out;

        /* Use the current user PHY configuration. The current user PHY
         * configuration is initialized during probe from PHY capabilities
         * software mode, and updated on set PHY configuration.
         */
        cfg = kmemdup(&pi->phy.curr_user_phy_cfg, sizeof(*cfg), GFP_KERNEL);
        if (!cfg) {
                retcode = -ENOMEM;
                goto out;
        }

        cfg->caps |= ICE_AQ_PHY_ENA_AUTO_LINK_UPDT;
        if (link_up)
                cfg->caps |= ICE_AQ_PHY_ENA_LINK;
        else
                cfg->caps &= ~ICE_AQ_PHY_ENA_LINK;

        retcode = ice_aq_set_phy_cfg(&vsi->back->hw, pi, cfg, NULL);
        if (retcode) {
                dev_err(dev, "Failed to set phy config, VSI %d error %d\n",
                        vsi->vsi_num, retcode);
                retcode = -EIO;
        }

        kfree(cfg);
out:
        kfree(pcaps);
        return retcode;
}

/**
 * ice_init_nvm_phy_type - Initialize the NVM PHY type
 * @pi: port info structure
 *
 * Initialize nvm_phy_type_[low|high] for link lenient mode support
 */
static int ice_init_nvm_phy_type(struct ice_port_info *pi)
{
        struct ice_aqc_get_phy_caps_data *pcaps;
        struct ice_pf *pf = pi->hw->back;
        int err;

        pcaps = kzalloc(sizeof(*pcaps), GFP_KERNEL);
        if (!pcaps)
                return -ENOMEM;

        err = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_TOPO_CAP_NO_MEDIA,
                                  pcaps, NULL);

        if (err) {
                dev_err(ice_pf_to_dev(pf), "Get PHY capability failed.\n");
                goto out;
        }

        pf->nvm_phy_type_hi = pcaps->phy_type_high;
        pf->nvm_phy_type_lo = pcaps->phy_type_low;

out:
        kfree(pcaps);
        return err;
}

/**
 * ice_init_link_dflt_override - Initialize link default override
 * @pi: port info structure
 *
 * Initialize link default override and PHY total port shutdown during probe
 */
static void ice_init_link_dflt_override(struct ice_port_info *pi)
{
        struct ice_link_default_override_tlv *ldo;
        struct ice_pf *pf = pi->hw->back;

        ldo = &pf->link_dflt_override;
        if (ice_get_link_default_override(ldo, pi))
                return;

        if (!(ldo->options & ICE_LINK_OVERRIDE_PORT_DIS))
                return;

        /* Enable Total Port Shutdown (override/replace link-down-on-close
         * ethtool private flag) for ports with Port Disable bit set.
         */
        set_bit(ICE_FLAG_TOTAL_PORT_SHUTDOWN_ENA, pf->flags);
        set_bit(ICE_FLAG_LINK_DOWN_ON_CLOSE_ENA, pf->flags);
}

/**
 * ice_init_phy_cfg_dflt_override - Initialize PHY cfg default override settings
 * @pi: port info structure
 *
 * If default override is enabled, initialize the user PHY cfg speed and FEC
 * settings using the default override mask from the NVM.
 *
 * The PHY should only be configured with the default override settings the
 * first time media is available. The ICE_LINK_DEFAULT_OVERRIDE_PENDING state
 * is used to indicate that the user PHY cfg default override is initialized
 * and the PHY has not been configured with the default override settings. The
 * state is set here, and cleared in ice_configure_phy the first time the PHY is
 * configured.
 *
 * This function should be called only if the FW doesn't support default
 * configuration mode, as reported by ice_fw_supports_report_dflt_cfg.
 */
static void ice_init_phy_cfg_dflt_override(struct ice_port_info *pi)
{
        struct ice_link_default_override_tlv *ldo;
        struct ice_aqc_set_phy_cfg_data *cfg;
        struct ice_phy_info *phy = &pi->phy;
        struct ice_pf *pf = pi->hw->back;

        ldo = &pf->link_dflt_override;

        /* If link default override is enabled, use to mask NVM PHY capabilities
         * for speed and FEC default configuration.
         */
        cfg = &phy->curr_user_phy_cfg;

        if (ldo->phy_type_low || ldo->phy_type_high) {
                cfg->phy_type_low = pf->nvm_phy_type_lo &
                                    cpu_to_le64(ldo->phy_type_low);
                cfg->phy_type_high = pf->nvm_phy_type_hi &
                                     cpu_to_le64(ldo->phy_type_high);
        }
        cfg->link_fec_opt = ldo->fec_options;
        phy->curr_user_fec_req = ICE_FEC_AUTO;

        set_bit(ICE_LINK_DEFAULT_OVERRIDE_PENDING, pf->state);
}

/**
 * ice_init_phy_user_cfg - Initialize the PHY user configuration
 * @pi: port info structure
 *
 * Initialize the current user PHY configuration, speed, FEC, and FC requested
 * mode to default. The PHY defaults are from get PHY capabilities topology
 * with media so call when media is first available. An error is returned if
 * called when media is not available. The PHY initialization completed state is
 * set here.
 *
 * These configurations are used when setting PHY
 * configuration. The user PHY configuration is updated on set PHY
 * configuration. Returns 0 on success, negative on failure
 */
static int ice_init_phy_user_cfg(struct ice_port_info *pi)
{
        struct ice_aqc_get_phy_caps_data *pcaps;
        struct ice_phy_info *phy = &pi->phy;
        struct ice_pf *pf = pi->hw->back;
        int err;

        if (!(phy->link_info.link_info & ICE_AQ_MEDIA_AVAILABLE))
                return -EIO;

        pcaps = kzalloc(sizeof(*pcaps), GFP_KERNEL);
        if (!pcaps)
                return -ENOMEM;

        if (ice_fw_supports_report_dflt_cfg(pi->hw))
                err = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_DFLT_CFG,
                                          pcaps, NULL);
        else
                err = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_TOPO_CAP_MEDIA,
                                          pcaps, NULL);
        if (err) {
                dev_err(ice_pf_to_dev(pf), "Get PHY capability failed.\n");
                goto err_out;
        }

        ice_copy_phy_caps_to_cfg(pi, pcaps, &pi->phy.curr_user_phy_cfg);

        /* check if lenient mode is supported and enabled */
        if (ice_fw_supports_link_override(pi->hw) &&
            !(pcaps->module_compliance_enforcement &
              ICE_AQC_MOD_ENFORCE_STRICT_MODE)) {
                set_bit(ICE_FLAG_LINK_LENIENT_MODE_ENA, pf->flags);

                /* if the FW supports default PHY configuration mode, then the driver
                 * does not have to apply link override settings. If not,
                 * initialize user PHY configuration with link override values
                 */
                if (!ice_fw_supports_report_dflt_cfg(pi->hw) &&
                    (pf->link_dflt_override.options & ICE_LINK_OVERRIDE_EN)) {
                        ice_init_phy_cfg_dflt_override(pi);
                        goto out;
                }
        }

        /* if link default override is not enabled, set user flow control and
         * FEC settings based on what get_phy_caps returned
         */
        phy->curr_user_fec_req = ice_caps_to_fec_mode(pcaps->caps,
                                                      pcaps->link_fec_options);
        phy->curr_user_fc_req = ice_caps_to_fc_mode(pcaps->caps);

out:
        phy->curr_user_speed_req = ICE_AQ_LINK_SPEED_M;
        set_bit(ICE_PHY_INIT_COMPLETE, pf->state);
err_out:
        kfree(pcaps);
        return err;
}

/**
 * ice_configure_phy - configure PHY
 * @vsi: VSI of PHY
 *
 * Set the PHY configuration. If the current PHY configuration is the same as
 * the curr_user_phy_cfg, then do nothing to avoid link flap. Otherwise
 * configure the based get PHY capabilities for topology with media.
 */
static int ice_configure_phy(struct ice_vsi *vsi)
{
        struct device *dev = ice_pf_to_dev(vsi->back);
        struct ice_port_info *pi = vsi->port_info;
        struct ice_aqc_get_phy_caps_data *pcaps;
        struct ice_aqc_set_phy_cfg_data *cfg;
        struct ice_phy_info *phy = &pi->phy;
        struct ice_pf *pf = vsi->back;
        int err;

        /* Ensure we have media as we cannot configure a medialess port */
        if (!(phy->link_info.link_info & ICE_AQ_MEDIA_AVAILABLE))
                return -ENOMEDIUM;

        ice_print_topo_conflict(vsi);

        if (!test_bit(ICE_FLAG_LINK_LENIENT_MODE_ENA, pf->flags) &&
            phy->link_info.topo_media_conflict == ICE_AQ_LINK_TOPO_UNSUPP_MEDIA)
                return -EPERM;

        if (test_bit(ICE_FLAG_LINK_DOWN_ON_CLOSE_ENA, pf->flags))
                return ice_force_phys_link_state(vsi, true);

        pcaps = kzalloc(sizeof(*pcaps), GFP_KERNEL);
        if (!pcaps)
                return -ENOMEM;

        /* Get current PHY config */
        err = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_ACTIVE_CFG, pcaps,
                                  NULL);
        if (err) {
                dev_err(dev, "Failed to get PHY configuration, VSI %d error %d\n",
                        vsi->vsi_num, err);
                goto done;
        }

        /* If PHY enable link is configured and configuration has not changed,
         * there's nothing to do
         */
        if (pcaps->caps & ICE_AQC_PHY_EN_LINK &&
            ice_phy_caps_equals_cfg(pcaps, &phy->curr_user_phy_cfg))
                goto done;

        /* Use PHY topology as baseline for configuration */
        memset(pcaps, 0, sizeof(*pcaps));
        if (ice_fw_supports_report_dflt_cfg(pi->hw))
                err = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_DFLT_CFG,
                                          pcaps, NULL);
        else
                err = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_TOPO_CAP_MEDIA,
                                          pcaps, NULL);
        if (err) {
                dev_err(dev, "Failed to get PHY caps, VSI %d error %d\n",
                        vsi->vsi_num, err);
                goto done;
        }

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

        ice_copy_phy_caps_to_cfg(pi, pcaps, cfg);

        /* Speed - If default override pending, use curr_user_phy_cfg set in
         * ice_init_phy_user_cfg_ldo.
         */
        if (test_and_clear_bit(ICE_LINK_DEFAULT_OVERRIDE_PENDING,
                               vsi->back->state)) {
                cfg->phy_type_low = phy->curr_user_phy_cfg.phy_type_low;
                cfg->phy_type_high = phy->curr_user_phy_cfg.phy_type_high;
        } else {
                u64 phy_low = 0, phy_high = 0;

                ice_update_phy_type(&phy_low, &phy_high,
                                    pi->phy.curr_user_speed_req);
                cfg->phy_type_low = pcaps->phy_type_low & cpu_to_le64(phy_low);
                cfg->phy_type_high = pcaps->phy_type_high &
                                     cpu_to_le64(phy_high);
        }

        /* Can't provide what was requested; use PHY capabilities */
        if (!cfg->phy_type_low && !cfg->phy_type_high) {
                cfg->phy_type_low = pcaps->phy_type_low;
                cfg->phy_type_high = pcaps->phy_type_high;
        }

        /* FEC */
        ice_cfg_phy_fec(pi, cfg, phy->curr_user_fec_req);

        /* Can't provide what was requested; use PHY capabilities */
        if (cfg->link_fec_opt !=
            (cfg->link_fec_opt & pcaps->link_fec_options)) {
                cfg->caps |= pcaps->caps & ICE_AQC_PHY_EN_AUTO_FEC;
                cfg->link_fec_opt = pcaps->link_fec_options;
        }

        /* Flow Control - always supported; no need to check against
         * capabilities
         */
        ice_cfg_phy_fc(pi, cfg, phy->curr_user_fc_req);

        /* Enable link and link update */
        cfg->caps |= ICE_AQ_PHY_ENA_AUTO_LINK_UPDT | ICE_AQ_PHY_ENA_LINK;

        err = ice_aq_set_phy_cfg(&pf->hw, pi, cfg, NULL);
        if (err)
                dev_err(dev, "Failed to set phy config, VSI %d error %d\n",
                        vsi->vsi_num, err);

        kfree(cfg);
done:
        kfree(pcaps);
        return err;
}

/**
 * ice_check_media_subtask - Check for media
 * @pf: pointer to PF struct
 *
 * If media is available, then initialize PHY user configuration if it is not
 * been, and configure the PHY if the interface is up.
 */
static void ice_check_media_subtask(struct ice_pf *pf)
{
        struct ice_port_info *pi;
        struct ice_vsi *vsi;
        int err;

        /* No need to check for media if it's already present */
        if (!test_bit(ICE_FLAG_NO_MEDIA, pf->flags))
                return;

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

        /* Refresh link info and check if media is present */
        pi = vsi->port_info;
        err = ice_update_link_info(pi);
        if (err)
                return;

        ice_check_link_cfg_err(pf, pi->phy.link_info.link_cfg_err);

        if (pi->phy.link_info.link_info & ICE_AQ_MEDIA_AVAILABLE) {
                if (!test_bit(ICE_PHY_INIT_COMPLETE, pf->state))
                        ice_init_phy_user_cfg(pi);

                /* PHY settings are reset on media insertion, reconfigure
                 * PHY to preserve settings.
                 */
                if (test_bit(ICE_VSI_DOWN, vsi->state) &&
                    test_bit(ICE_FLAG_LINK_DOWN_ON_CLOSE_ENA, vsi->back->flags))
                        return;

                err = ice_configure_phy(vsi);
                if (!err)
                        clear_bit(ICE_FLAG_NO_MEDIA, pf->flags);

                /* A Link Status Event will be generated; the event handler
                 * will complete bringing the interface up
                 */
        }
}

/**
 * ice_service_task - manage and run subtasks
 * @work: pointer to work_struct contained by the PF struct
 */
static void ice_service_task(struct work_struct *work)
{
        struct ice_pf *pf = container_of(work, struct ice_pf, serv_task);
        unsigned long start_time = jiffies;

        /* subtasks */

        /* process reset requests first */
        ice_reset_subtask(pf);

        /* bail if a reset/recovery cycle is pending or rebuild failed */
        if (ice_is_reset_in_progress(pf->state) ||
            test_bit(ICE_SUSPENDED, pf->state) ||
            test_bit(ICE_NEEDS_RESTART, pf->state)) {
                ice_service_task_complete(pf);
                return;
        }

        if (test_and_clear_bit(ICE_AUX_ERR_PENDING, pf->state)) {
                struct iidc_event *event;

                event = kzalloc(sizeof(*event), GFP_KERNEL);
                if (event) {
                        set_bit(IIDC_EVENT_CRIT_ERR, event->type);
                        /* report the entire OICR value to AUX driver */
                        swap(event->reg, pf->oicr_err_reg);
                        ice_send_event_to_aux(pf, event);
                        kfree(event);
                }
        }

        /* unplug aux dev per request, if an unplug request came in
         * while processing a plug request, this will handle it
         */
        if (test_and_clear_bit(ICE_FLAG_UNPLUG_AUX_DEV, pf->flags))
                ice_unplug_aux_dev(pf);

        /* Plug aux device per request */
        if (test_and_clear_bit(ICE_FLAG_PLUG_AUX_DEV, pf->flags))
                ice_plug_aux_dev(pf);

        if (test_and_clear_bit(ICE_FLAG_MTU_CHANGED, pf->flags)) {
                struct iidc_event *event;

                event = kzalloc(sizeof(*event), GFP_KERNEL);
                if (event) {
                        set_bit(IIDC_EVENT_AFTER_MTU_CHANGE, event->type);
                        ice_send_event_to_aux(pf, event);
                        kfree(event);
                }
        }

        ice_clean_adminq_subtask(pf);
        ice_check_media_subtask(pf);
        ice_check_for_hang_subtask(pf);
        ice_sync_fltr_subtask(pf);
        ice_handle_mdd_event(pf);
        ice_watchdog_subtask(pf);

        if (ice_is_safe_mode(pf)) {
                ice_service_task_complete(pf);
                return;
        }

        ice_process_vflr_event(pf);
        ice_clean_mailboxq_subtask(pf);
        ice_clean_sbq_subtask(pf);
        ice_sync_arfs_fltrs(pf);
        ice_flush_fdir_ctx(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_FD_VF_FLUSH_CTX, pf->state) ||
            test_bit(ICE_SIDEBANDQ_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;
        hw->sbq.num_rq_entries = ICE_SBQ_LEN;
        hw->sbq.num_sq_entries = ICE_SBQ_LEN;
        hw->sbq.rq_buf_size = ICE_SBQ_MAX_BUF_LEN;
        hw->sbq.sq_buf_size = ICE_SBQ_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;
        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 = q_vector->irq.virq;

                if (q_vector->tx.tx_ring && q_vector->rx.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.rx_ring) {
                        snprintf(q_vector->name, sizeof(q_vector->name) - 1,
                                 "%s-%s-%d", basename, "rx", rx_int_idx++);
                } else if (q_vector->tx.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;
                }
                if (vsi->type == ICE_VSI_CTRL && vsi->vf)
                        err = devm_request_irq(dev, irq_num, vsi->irq_handler,
                                               IRQF_SHARED, q_vector->name,
                                               q_vector);
                else
                        err = devm_request_irq(dev, irq_num, vsi->irq_handler,
                                               0, q_vector->name, q_vector);
                if (err) {
                        netdev_err(vsi->netdev, "MSIX request_irq failed, error: %d\n",
                                   err);
                        goto free_q_irqs;
                }

                /* register for affinity change notifications */
                if (!IS_ENABLED(CONFIG_RFS_ACCEL)) {
                        struct irq_affinity_notify *affinity_notify;

                        affinity_notify = &q_vector->affinity_notify;
                        affinity_notify->notify = ice_irq_affinity_notify;
                        affinity_notify->release = ice_irq_affinity_release;
                        irq_set_affinity_notifier(irq_num, affinity_notify);
                }

                /* assign the mask for this irq */
                irq_update_affinity_hint(irq_num, &q_vector->affinity_mask);
        }

        err = ice_set_cpu_rx_rmap(vsi);
        if (err) {
                netdev_err(vsi->netdev, "Failed to setup CPU RMAP on VSI %u: %pe\n",
                           vsi->vsi_num, ERR_PTR(err));
                goto free_q_irqs;
        }

        vsi->irqs_ready = true;
        return 0;

free_q_irqs:
        while (vector--) {
                irq_num = vsi->q_vectors[vector]->irq.virq;
                if (!IS_ENABLED(CONFIG_RFS_ACCEL))
                        irq_set_affinity_notifier(irq_num, NULL);
                irq_update_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);
        struct ice_tx_desc *tx_desc;
        int i, j;

        ice_for_each_xdp_txq(vsi, i) {
                u16 xdp_q_idx = vsi->alloc_txq + i;
                struct ice_ring_stats *ring_stats;
                struct ice_tx_ring *xdp_ring;

                xdp_ring = kzalloc(sizeof(*xdp_ring), GFP_KERNEL);
                if (!xdp_ring)
                        goto free_xdp_rings;

                ring_stats = kzalloc(sizeof(*ring_stats), GFP_KERNEL);
                if (!ring_stats) {
                        ice_free_tx_ring(xdp_ring);
                        goto free_xdp_rings;
                }

                xdp_ring->ring_stats = ring_stats;
                xdp_ring->q_index = xdp_q_idx;
                xdp_ring->reg_idx = vsi->txq_map[xdp_q_idx];
                xdp_ring->vsi = vsi;
                xdp_ring->netdev = NULL;
                xdp_ring->dev = dev;
                xdp_ring->count = vsi->num_tx_desc;
                WRITE_ONCE(vsi->xdp_rings[i], xdp_ring);
                if (ice_setup_tx_ring(xdp_ring))
                        goto free_xdp_rings;
                ice_set_ring_xdp(xdp_ring);
                spin_lock_init(&xdp_ring->tx_lock);
                for (j = 0; j < xdp_ring->count; j++) {
                        tx_desc = ICE_TX_DESC(xdp_ring, j);
                        tx_desc->cmd_type_offset_bsz = 0;
                }
        }

        return 0;

free_xdp_rings:
        for (; i >= 0; i--) {
                if (vsi->xdp_rings[i] && vsi->xdp_rings[i]->desc) {
                        kfree_rcu(vsi->xdp_rings[i]->ring_stats, rcu);
                        vsi->xdp_rings[i]->ring_stats = NULL;
                        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);
        ice_for_each_rxq(vsi, i)
                WRITE_ONCE(vsi->rx_rings[i]->xdp_prog, vsi->xdp_prog);

        if (old_prog)
                bpf_prog_put(old_prog);
}

static struct ice_tx_ring *ice_xdp_ring_from_qid(struct ice_vsi *vsi, int qid)
{
        struct ice_q_vector *q_vector;
        struct ice_tx_ring *ring;

        if (static_key_enabled(&ice_xdp_locking_key))
                return vsi->xdp_rings[qid % vsi->num_xdp_txq];

        q_vector = vsi->rx_rings[qid]->q_vector;
        ice_for_each_tx_ring(ring, q_vector->tx)
                if (ice_ring_is_xdp(ring))
                        return ring;

        return NULL;
}

/**
 * ice_map_xdp_rings - Map XDP rings to interrupt vectors
 * @vsi: the VSI with XDP rings being configured
 *
 * Map XDP rings to interrupt vectors and perform the configuration steps
 * dependent on the mapping.
 */
void ice_map_xdp_rings(struct ice_vsi *vsi)
{
        int xdp_rings_rem = vsi->num_xdp_txq;
        int v_idx, q_idx;

        /* 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_tx_ring *xdp_ring = vsi->xdp_rings[q_id];

                        xdp_ring->q_vector = q_vector;
                        xdp_ring->next = q_vector->tx.tx_ring;
                        q_vector->tx.tx_ring = xdp_ring;
                }
                xdp_rings_rem -= xdp_rings_per_v;
        }

        ice_for_each_rxq(vsi, q_idx) {
                vsi->rx_rings[q_idx]->xdp_ring = ice_xdp_ring_from_qid(vsi,
                                                                       q_idx);
                ice_tx_xsk_pool(vsi, q_idx);
        }
}

/**
 * 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
 * @cfg_type: create from scratch or restore the existing configuration
 *
 * Return 0 on success and negative value on error
 */
int ice_prepare_xdp_rings(struct ice_vsi *vsi, struct bpf_prog *prog,
                          enum ice_xdp_cfg cfg_type)
{
        u16 max_txqs[ICE_MAX_TRAFFIC_CLASS] = { 0 };
        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
        };
        struct device *dev;
        int status, i;

        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 (static_key_enabled(&ice_xdp_locking_key))
                netdev_warn(vsi->netdev,
                            "Could not allocate one XDP Tx ring per CPU, XDP_TX/XDP_REDIRECT actions will be slower\n");

        if (ice_xdp_alloc_setup_rings(vsi))
                goto clear_xdp_rings;

        /* 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 (cfg_type == ICE_XDP_CFG_PART)
                return 0;

        ice_map_xdp_rings(vsi);

        /* 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;
        }

        /* assign the prog only when it's not already present on VSI;
         * this flow is a subject of both ethtool -L and ndo_bpf flows;
         * VSI rebuild that happens under ethtool -L can expose us to
         * the bpf_prog refcount issues as we would be swapping same
         * bpf_prog pointers from vsi->xdp_prog and calling bpf_prog_put
         * on it as it would be treated as an 'old_prog'; for ndo_bpf
         * this is not harmful as dev_xdp_install bumps the refcount
         * before calling the op exposed by the driver;
         */
        if (!ice_is_xdp_ena_vsi(vsi))
                ice_vsi_assign_bpf_prog(vsi, prog);

        return 0;
clear_xdp_rings:
        ice_for_each_xdp_txq(vsi, 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);
        ice_for_each_xdp_txq(vsi, 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
 * @cfg_type: disable XDP permanently or allow it to be restored later
 *
 * Detach XDP rings from irq vectors, clean up the PF bitmap and free
 * resources
 */
int ice_destroy_xdp_rings(struct ice_vsi *vsi, enum ice_xdp_cfg cfg_type)
{
        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
         */
        if (cfg_type == ICE_XDP_CFG_PART)
                goto free_qmap;

        ice_for_each_q_vector(vsi, v_idx) {
                struct ice_q_vector *q_vector = vsi->q_vectors[v_idx];
                struct ice_tx_ring *ring;

                ice_for_each_tx_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.tx_ring = ring;
        }

free_qmap:
        mutex_lock(&pf->avail_q_mutex);
        ice_for_each_xdp_txq(vsi, 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);

        ice_for_each_xdp_txq(vsi, i)
                if (vsi->xdp_rings[i]) {
                        if (vsi->xdp_rings[i]->desc) {
                                synchronize_rcu();
                                ice_free_tx_ring(vsi->xdp_rings[i]);
                        }
                        kfree_rcu(vsi->xdp_rings[i]->ring_stats, rcu);
                        vsi->xdp_rings[i]->ring_stats = NULL;
                        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 (static_key_enabled(&ice_xdp_locking_key))
                static_branch_dec(&ice_xdp_locking_key);

        if (cfg_type == ICE_XDP_CFG_PART)
                return 0;

        ice_vsi_assign_bpf_prog(vsi, NULL);

        /* notify Tx scheduler that we destroyed XDP queues and bring
         * back the old number of child nodes
         */
        for (i = 0; i < vsi->tc_cfg.numtc; i++)
                max_txqs[i] = vsi->num_txq;

        /* change number of XDP Tx queues to 0 */
        vsi->num_xdp_txq = 0;

        return ice_cfg_vsi_lan(vsi->port_info, vsi->idx, vsi->tc_cfg.ena_tc,
                               max_txqs);
}

/**
 * ice_vsi_rx_napi_schedule - Schedule napi on RX queues from VSI
 * @vsi: VSI to schedule napi on
 */
static void ice_vsi_rx_napi_schedule(struct ice_vsi *vsi)
{
        int i;

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

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

/**
 * ice_vsi_determine_xdp_res - figure out how many Tx qs can XDP have
 * @vsi: VSI to determine the count of XDP Tx qs
 *
 * returns 0 if Tx qs count is higher than at least half of CPU count,
 * -ENOMEM otherwise
 */
int ice_vsi_determine_xdp_res(struct ice_vsi *vsi)
{
        u16 avail = ice_get_avail_txq_count(vsi->back);
        u16 cpus = num_possible_cpus();

        if (avail < cpus / 2)
                return -ENOMEM;

        if (vsi->type == ICE_VSI_SF)
                avail = vsi->alloc_txq;

        vsi->num_xdp_txq = min_t(u16, avail, cpus);

        if (vsi->num_xdp_txq < cpus)
                static_branch_inc(&ice_xdp_locking_key);

        return 0;
}

/**
 * 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 (test_bit(ICE_FLAG_LEGACY_RX, vsi->back->flags))
                return ICE_RXBUF_1664;
        else
                return ICE_RXBUF_3072;
}

/**
 * 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)
{
        unsigned int frame_size = vsi->netdev->mtu + ICE_ETH_PKT_HDR_PAD;
        int ret = 0, xdp_ring_err = 0;
        bool if_running;

        if (prog && !prog->aux->xdp_has_frags) {
                if (frame_size > ice_max_xdp_frame_size(vsi)) {
                        NL_SET_ERR_MSG_MOD(extack,
                                           "MTU is too large for linear frames and XDP prog does not support frags");
                        return -EOPNOTSUPP;
                }
        }

        /* hot swap progs and avoid toggling link */
        if (ice_is_xdp_ena_vsi(vsi) == !!prog ||
            test_bit(ICE_VSI_REBUILD_PENDING, vsi->state)) {
                ice_vsi_assign_bpf_prog(vsi, prog);
                return 0;
        }

        if_running = netif_running(vsi->netdev) &&
                     !test_and_set_bit(ICE_VSI_DOWN, vsi->state);

        /* need to stop netdev while setting up the program for Rx rings */
        if (if_running) {
                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) {
                xdp_ring_err = ice_vsi_determine_xdp_res(vsi);
                if (xdp_ring_err) {
                        NL_SET_ERR_MSG_MOD(extack, "Not enough Tx resources for XDP");
                } else {
                        xdp_ring_err = ice_prepare_xdp_rings(vsi, prog,
                                                             ICE_XDP_CFG_FULL);
                        if (xdp_ring_err)
                                NL_SET_ERR_MSG_MOD(extack, "Setting up XDP Tx resources failed");
                }
                xdp_features_set_redirect_target(vsi->netdev, true);
                /* reallocate Rx queues that are used for zero-copy */
                xdp_ring_err = ice_realloc_zc_buf(vsi, true);
                if (xdp_ring_err)
                        NL_SET_ERR_MSG_MOD(extack, "Setting up XDP Rx resources failed");
        } else if (ice_is_xdp_ena_vsi(vsi) && !prog) {
                xdp_features_clear_redirect_target(vsi->netdev);
                xdp_ring_err = ice_destroy_xdp_rings(vsi, ICE_XDP_CFG_FULL);
                if (xdp_ring_err)
                        NL_SET_ERR_MSG_MOD(extack, "Freeing XDP Tx resources failed");
                /* reallocate Rx queues that were used for zero-copy */
                xdp_ring_err = ice_realloc_zc_buf(vsi, false);
                if (xdp_ring_err)
                        NL_SET_ERR_MSG_MOD(extack, "Freeing XDP Rx resources failed");
        }

        if (if_running)
                ret = ice_up(vsi);

        if (!ret && prog)
                ice_vsi_rx_napi_schedule(vsi);

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

/**
 * ice_xdp_safe_mode - XDP handler for safe mode
 * @dev: netdevice
 * @xdp: XDP command
 */
static int ice_xdp_safe_mode(struct net_device __always_unused *dev,
                             struct netdev_bpf *xdp)
{
        NL_SET_ERR_MSG_MOD(xdp->extack,
                           "Please provide working DDP firmware package in order to use XDP\n"
                           "Refer to Documentation/networking/device_drivers/ethernet/intel/ice.rst");
        return -EOPNOTSUPP;
}

/**
 * ice_xdp - implements XDP handler
 * @dev: netdevice
 * @xdp: XDP command
 */
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;
        int ret;

        if (vsi->type != ICE_VSI_PF && vsi->type != ICE_VSI_SF) {
                NL_SET_ERR_MSG_MOD(xdp->extack, "XDP can be loaded only on PF or SF VSI");
                return -EINVAL;
        }

        mutex_lock(&vsi->xdp_state_lock);

        switch (xdp->command) {
        case XDP_SETUP_PROG:
                ret = ice_xdp_setup_prog(vsi, xdp->prog, xdp->extack);
                break;
        case XDP_SETUP_XSK_POOL:
                ret = ice_xsk_pool_setup(vsi, xdp->xsk.pool, xdp->xsk.queue_id);
                break;
        default:
                ret = -EINVAL;
        }

        mutex_unlock(&vsi->xdp_state_lock);
        return ret;
}

/**
 * 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 pf_intr_start_offset;
        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_PUSH_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_irq.index),
             GLINT_DYN_CTL_SW_ITR_INDX_M | GLINT_DYN_CTL_INTENA_MSK_M);

        if (!pf->hw.dev_caps.ts_dev_info.ts_ll_int_read)
                return;
        pf_intr_start_offset = rd32(hw, PFINT_ALLOC) & PFINT_ALLOC_FIRST;
        wr32(hw, GLINT_DYN_CTL(pf->ll_ts_irq.index + pf_intr_start_offset),
             GLINT_DYN_CTL_SW_ITR_INDX_M | GLINT_DYN_CTL_INTENA_MSK_M);
}

/**
 * ice_ll_ts_intr - ll_ts interrupt handler
 * @irq: interrupt number
 * @data: pointer to a q_vector
 */
static irqreturn_t ice_ll_ts_intr(int __always_unused irq, void *data)
{
        struct ice_pf *pf = data;
        u32 pf_intr_start_offset;
        struct ice_ptp_tx *tx;
        unsigned long flags;
        struct ice_hw *hw;
        u32 val;
        u8 idx;

        hw = &pf->hw;
        tx = &pf->ptp.port.tx;
        spin_lock_irqsave(&tx->lock, flags);
        ice_ptp_complete_tx_single_tstamp(tx);

        idx = find_next_bit_wrap(tx->in_use, tx->len,
                                 tx->last_ll_ts_idx_read + 1);
        if (idx != tx->len)
                ice_ptp_req_tx_single_tstamp(tx, idx);
        spin_unlock_irqrestore(&tx->lock, flags);

        val = GLINT_DYN_CTL_INTENA_M | GLINT_DYN_CTL_CLEARPBA_M |
              (ICE_ITR_NONE << GLINT_DYN_CTL_ITR_INDX_S);
        pf_intr_start_offset = rd32(hw, PFINT_ALLOC) & PFINT_ALLOC_FIRST;
        wr32(hw, GLINT_DYN_CTL(pf->ll_ts_irq.index + pf_intr_start_offset),
             val);

        return IRQ_HANDLED;
}

/**
 * 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;
        irqreturn_t ret = IRQ_HANDLED;
        struct ice_hw *hw = &pf->hw;
        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);
        set_bit(ICE_SIDEBANDQ_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 = FIELD_GET(GLGEN_RSTAT_RESET_TYPE_M,
                                  rd32(hw, GLGEN_RSTAT));

                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.
                 */
                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_TSYN_TX_M) {
                ena_mask &= ~PFINT_OICR_TSYN_TX_M;
                if (ice_pf_state_is_nominal(pf) &&
                    pf->hw.dev_caps.ts_dev_info.ts_ll_int_read) {
                        struct ice_ptp_tx *tx = &pf->ptp.port.tx;
                        unsigned long flags;
                        u8 idx;

                        spin_lock_irqsave(&tx->lock, flags);
                        idx = find_next_bit_wrap(tx->in_use, tx->len,
                                                 tx->last_ll_ts_idx_read + 1);
                        if (idx != tx->len)
                                ice_ptp_req_tx_single_tstamp(tx, idx);
                        spin_unlock_irqrestore(&tx->lock, flags);
                } else if (ice_ptp_pf_handles_tx_interrupt(pf)) {
                        set_bit(ICE_MISC_THREAD_TX_TSTAMP, pf->misc_thread);
                        ret = IRQ_WAKE_THREAD;
                }
        }

        if (oicr & PFINT_OICR_TSYN_EVNT_M) {
                u8 tmr_idx = hw->func_caps.ts_func_info.tmr_index_owned;
                u32 gltsyn_stat = rd32(hw, GLTSYN_STAT(tmr_idx));

                ena_mask &= ~PFINT_OICR_TSYN_EVNT_M;

                if (ice_pf_src_tmr_owned(pf)) {
                        /* Save EVENTs from GLTSYN register */
                        pf->ptp.ext_ts_irq |= gltsyn_stat &
                                              (GLTSYN_STAT_EVENT0_M |
                                               GLTSYN_STAT_EVENT1_M |
                                               GLTSYN_STAT_EVENT2_M);

                        ice_ptp_extts_event(pf);
                }
        }

#define ICE_AUX_CRIT_ERR (PFINT_OICR_PE_CRITERR_M | PFINT_OICR_HMC_ERR_M | PFINT_OICR_PE_PUSH_M)
        if (oicr & ICE_AUX_CRIT_ERR) {
                pf->oicr_err_reg |= oicr;
                set_bit(ICE_AUX_ERR_PENDING, pf->state);
                ena_mask &= ~ICE_AUX_CRIT_ERR;
        }

        /* 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_PCI_EXCEPTION_M |
                            PFINT_OICR_ECC_ERR_M)) {
                        set_bit(ICE_PFR_REQ, pf->state);
                }
        }
        ice_service_task_schedule(pf);
        if (ret == IRQ_HANDLED)
                ice_irq_dynamic_ena(hw, NULL, NULL);

        return ret;
}

/**
 * ice_misc_intr_thread_fn - misc interrupt thread function
 * @irq: interrupt number
 * @data: pointer to a q_vector
 */
static irqreturn_t ice_misc_intr_thread_fn(int __always_unused irq, void *data)
{
        struct ice_pf *pf = data;
        struct ice_hw *hw;

        hw = &pf->hw;

        if (ice_is_reset_in_progress(pf->state))
                goto skip_irq;

        if (test_and_clear_bit(ICE_MISC_THREAD_TX_TSTAMP, pf->misc_thread)) {
                /* Process outstanding Tx timestamps. If there is more work,
                 * re-arm the interrupt to trigger again.
                 */
                if (ice_ptp_process_ts(pf) == ICE_TX_TSTAMP_WORK_PENDING) {
                        wr32(hw, PFINT_OICR, PFINT_OICR_TSYN_TX_M);
                        ice_flush(hw);
                }
        }

skip_irq:
        ice_irq_dynamic_ena(hw, NULL, NULL);

        return IRQ_HANDLED;
}

/**
 * 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);

        wr32(hw, PFINT_SB_CTL,
             rd32(hw, PFINT_SB_CTL) & ~PFINT_SB_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_ll_ts- Unroll ll_ts vector setup
 * @pf: board private structure
 */
static void ice_free_irq_msix_ll_ts(struct ice_pf *pf)
{
        int irq_num = pf->ll_ts_irq.virq;

        synchronize_irq(irq_num);
        devm_free_irq(ice_pf_to_dev(pf), irq_num, pf);

        ice_free_irq(pf, pf->ll_ts_irq);
}

/**
 * ice_free_irq_msix_misc - Unroll misc vector setup
 * @pf: board private structure
 */
static void ice_free_irq_msix_misc(struct ice_pf *pf)
{
        int misc_irq_num = pf->oicr_irq.virq;
        struct ice_hw *hw = &pf->hw;

        ice_dis_ctrlq_interrupts(hw);

        /* disable OICR interrupt */
        wr32(hw, PFINT_OICR_ENA, 0);
        ice_flush(hw);

        synchronize_irq(misc_irq_num);
        devm_free_irq(ice_pf_to_dev(pf), misc_irq_num, pf);

        ice_free_irq(pf, pf->oicr_irq);
        if (pf->hw.dev_caps.ts_dev_info.ts_ll_int_read)
                ice_free_irq_msix_ll_ts(pf);
}

/**
 * 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);

        if (!hw->dev_caps.ts_dev_info.ts_ll_int_read) {
                /* enable Sideband queue Interrupt causes */
                val = ((reg_idx & PFINT_SB_CTL_MSIX_INDX_M) |
                       PFINT_SB_CTL_CAUSE_ENA_M);
                wr32(hw, PFINT_SB_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;
        u32 pf_intr_start_offset;
        struct msi_map irq;
        int 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));

        if (!pf->int_name_ll_ts[0])
                snprintf(pf->int_name_ll_ts, sizeof(pf->int_name_ll_ts) - 1,
                         "%s-%s:ll_ts", 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 */
        irq = ice_alloc_irq(pf, false);
        if (irq.index < 0)
                return irq.index;

        pf->oicr_irq = irq;
        err = devm_request_threaded_irq(dev, pf->oicr_irq.virq, ice_misc_intr,
                                        ice_misc_intr_thread_fn, 0,
                                        pf->int_name, pf);
        if (err) {
                dev_err(dev, "devm_request_threaded_irq for %s failed: %d\n",
                        pf->int_name, err);
                ice_free_irq(pf, pf->oicr_irq);
                return err;
        }

        /* reserve one vector in irq_tracker for ll_ts interrupt */
        if (!pf->hw.dev_caps.ts_dev_info.ts_ll_int_read)
                goto skip_req_irq;

        irq = ice_alloc_irq(pf, false);
        if (irq.index < 0)
                return irq.index;

        pf->ll_ts_irq = irq;
        err = devm_request_irq(dev, pf->ll_ts_irq.virq, ice_ll_ts_intr, 0,
                               pf->int_name_ll_ts, pf);
        if (err) {
                dev_err(dev, "devm_request_irq for %s failed: %d\n",
                        pf->int_name_ll_ts, err);
                ice_free_irq(pf, pf->ll_ts_irq);
                return err;
        }

skip_req_irq:
        ice_ena_misc_vector(pf);

        ice_ena_ctrlq_interrupts(hw, pf->oicr_irq.index);
        /* This enables LL TS interrupt */
        pf_intr_start_offset = rd32(hw, PFINT_ALLOC) & PFINT_ALLOC_FIRST;
        if (pf->hw.dev_caps.ts_dev_info.ts_ll_int_read)
                wr32(hw, PFINT_SB_CTL,
                     ((pf->ll_ts_irq.index + pf_intr_start_offset) &
                      PFINT_SB_CTL_MSIX_INDX_M) | PFINT_SB_CTL_CAUSE_ENA_M);
        wr32(hw, GLINT_ITR(ICE_RX_ITR, pf->oicr_irq.index),
             ITR_REG_ALIGN(ICE_ITR_8K) >> ICE_ITR_GRAN_S);

        ice_flush(hw);
        ice_irq_dynamic_ena(hw, NULL, NULL);

        return 0;
}

/**
 * ice_set_ops - set netdev and ethtools ops for the given netdev
 * @vsi: the VSI associated with the new netdev
 */
static void ice_set_ops(struct ice_vsi *vsi)
{
        struct net_device *netdev = vsi->netdev;
        struct ice_pf *pf = ice_netdev_to_pf(netdev);

        if (ice_is_safe_mode(pf)) {
                netdev->netdev_ops = &ice_netdev_safe_mode_ops;
                ice_set_ethtool_safe_mode_ops(netdev);
                return;
        }

        netdev->netdev_ops = &ice_netdev_ops;
        netdev->udp_tunnel_nic_info = &pf->hw.udp_tunnel_nic;
        netdev->xdp_metadata_ops = &ice_xdp_md_ops;
        ice_set_ethtool_ops(netdev);

        if (vsi->type != ICE_VSI_PF)
                return;

        netdev->xdp_features = NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT |
                               NETDEV_XDP_ACT_XSK_ZEROCOPY |
                               NETDEV_XDP_ACT_RX_SG;
        netdev->xdp_zc_max_segs = ICE_MAX_BUF_TXD;
}

/**
 * ice_set_netdev_features - set features for the given netdev
 * @netdev: netdev instance
 */
void ice_set_netdev_features(struct net_device *netdev)
{
        struct ice_pf *pf = ice_netdev_to_pf(netdev);
        bool is_dvm_ena = ice_is_dvm_ena(&pf->hw);
        netdev_features_t csumo_features;
        netdev_features_t vlano_features;
        netdev_features_t dflt_features;
        netdev_features_t tso_features;

        if (ice_is_safe_mode(pf)) {
                /* safe mode */
                netdev->features = NETIF_F_SG | NETIF_F_HIGHDMA;
                netdev->hw_features = netdev->features;
                return;
        }

        dflt_features = NETIF_F_SG      |
                        NETIF_F_HIGHDMA |
                        NETIF_F_NTUPLE  |
                        NETIF_F_RXHASH;

        csumo_features = NETIF_F_RXCSUM   |
                         NETIF_F_IP_CSUM  |
                         NETIF_F_SCTP_CRC |
                         NETIF_F_IPV6_CSUM;

        vlano_features = NETIF_F_HW_VLAN_CTAG_FILTER |
                         NETIF_F_HW_VLAN_CTAG_TX     |
                         NETIF_F_HW_VLAN_CTAG_RX;

        /* Enable CTAG/STAG filtering by default in Double VLAN Mode (DVM) */
        if (is_dvm_ena)
                vlano_features |= NETIF_F_HW_VLAN_STAG_FILTER;

        tso_features = NETIF_F_TSO                      |
                       NETIF_F_TSO_ECN                  |
                       NETIF_F_TSO6                     |
                       NETIF_F_GSO_GRE                  |
                       NETIF_F_GSO_UDP_TUNNEL           |
                       NETIF_F_GSO_GRE_CSUM             |
                       NETIF_F_GSO_UDP_TUNNEL_CSUM      |
                       NETIF_F_GSO_PARTIAL              |
                       NETIF_F_GSO_IPXIP4               |
                       NETIF_F_GSO_IPXIP6               |
                       NETIF_F_GSO_UDP_L4;

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

        /* add support for HW_CSUM on packets with MPLS header */
        netdev->mpls_features =  NETIF_F_HW_CSUM |
                                 NETIF_F_TSO     |
                                 NETIF_F_TSO6;

        /* enable features */
        netdev->features |= netdev->hw_features;

        netdev->hw_features |= NETIF_F_HW_TC;
        netdev->hw_features |= NETIF_F_LOOPBACK;

        /* 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;

        /* advertise support but don't enable by default since only one type of
         * VLAN offload can be enabled at a time (i.e. CTAG or STAG). When one
         * type turns on the other has to be turned off. This is enforced by the
         * ice_fix_features() ndo callback.
         */
        if (is_dvm_ena)
                netdev->hw_features |= NETIF_F_HW_VLAN_STAG_RX |
                        NETIF_F_HW_VLAN_STAG_TX;

        /* Leave CRC / FCS stripping enabled by default, but allow the value to
         * be changed at runtime
         */
        netdev->hw_features |= NETIF_F_RXFCS;

        netif_set_tso_max_size(netdev, ICE_MAX_TSO_SIZE);
}

/**
 * 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)
{
        struct ice_vsi_cfg_params params = {};

        params.type = ICE_VSI_PF;
        params.port_info = pi;
        params.flags = ICE_VSI_FLAG_INIT;

        return ice_vsi_setup(pf, &params);
}

static struct ice_vsi *
ice_chnl_vsi_setup(struct ice_pf *pf, struct ice_port_info *pi,
                   struct ice_channel *ch)
{
        struct ice_vsi_cfg_params params = {};

        params.type = ICE_VSI_CHNL;
        params.port_info = pi;
        params.ch = ch;
        params.flags = ICE_VSI_FLAG_INIT;

        return ice_vsi_setup(pf, &params);
}

/**
 * ice_ctrl_vsi_setup - Set up a control VSI
 * @pf: board private structure
 * @pi: pointer to the port_info instance
 *
 * Returns pointer to the successfully allocated VSI software struct
 * on success, otherwise returns NULL on failure.
 */
static struct ice_vsi *
ice_ctrl_vsi_setup(struct ice_pf *pf, struct ice_port_info *pi)
{
        struct ice_vsi_cfg_params params = {};

        params.type = ICE_VSI_CTRL;
        params.port_info = pi;
        params.flags = ICE_VSI_FLAG_INIT;

        return ice_vsi_setup(pf, &params);
}

/**
 * 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)
{
        struct ice_vsi_cfg_params params = {};

        params.type = ICE_VSI_LB;
        params.port_info = pi;
        params.flags = ICE_VSI_FLAG_INIT;

        return ice_vsi_setup(pf, &params);
}

/**
 * ice_vlan_rx_add_vid - Add a VLAN ID filter to HW offload
 * @netdev: network interface to be adjusted
 * @proto: VLAN TPID
 * @vid: VLAN ID to be added
 *
 * net_device_ops implementation for adding VLAN IDs
 */
int ice_vlan_rx_add_vid(struct net_device *netdev, __be16 proto, u16 vid)
{
        struct ice_netdev_priv *np = netdev_priv(netdev);
        struct ice_vsi_vlan_ops *vlan_ops;
        struct ice_vsi *vsi = np->vsi;
        struct ice_vlan vlan;
        int ret;

        /* VLAN 0 is added by default during load/reset */
        if (!vid)
                return 0;

        while (test_and_set_bit(ICE_CFG_BUSY, vsi->state))
                usleep_range(1000, 2000);

        /* Add multicast promisc rule for the VLAN ID to be added if
         * all-multicast is currently enabled.
         */
        if (vsi->current_netdev_flags & IFF_ALLMULTI) {
                ret = ice_fltr_set_vsi_promisc(&vsi->back->hw, vsi->idx,
                                               ICE_MCAST_VLAN_PROMISC_BITS,
                                               vid);
                if (ret)
                        goto finish;
        }

        vlan_ops = ice_get_compat_vsi_vlan_ops(vsi);

        /* 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
         */
        vlan = ICE_VLAN(be16_to_cpu(proto), vid, 0);
        ret = vlan_ops->add_vlan(vsi, &vlan);
        if (ret)
                goto finish;

        /* If all-multicast is currently enabled and this VLAN ID is only one
         * besides VLAN-0 we have to update look-up type of multicast promisc
         * rule for VLAN-0 from ICE_SW_LKUP_PROMISC to ICE_SW_LKUP_PROMISC_VLAN.
         */
        if ((vsi->current_netdev_flags & IFF_ALLMULTI) &&
            ice_vsi_num_non_zero_vlans(vsi) == 1) {
                ice_fltr_clear_vsi_promisc(&vsi->back->hw, vsi->idx,
                                           ICE_MCAST_PROMISC_BITS, 0);
                ice_fltr_set_vsi_promisc(&vsi->back->hw, vsi->idx,
                                         ICE_MCAST_VLAN_PROMISC_BITS, 0);
        }

finish:
        clear_bit(ICE_CFG_BUSY, vsi->state);

        return ret;
}

/**
 * ice_vlan_rx_kill_vid - Remove a VLAN ID filter from HW offload
 * @netdev: network interface to be adjusted
 * @proto: VLAN TPID
 * @vid: VLAN ID to be removed
 *
 * net_device_ops implementation for removing VLAN IDs
 */
int ice_vlan_rx_kill_vid(struct net_device *netdev, __be16 proto, u16 vid)
{
        struct ice_netdev_priv *np = netdev_priv(netdev);
        struct ice_vsi_vlan_ops *vlan_ops;
        struct ice_vsi *vsi = np->vsi;
        struct ice_vlan vlan;
        int ret;

        /* don't allow removal of VLAN 0 */
        if (!vid)
                return 0;

        while (test_and_set_bit(ICE_CFG_BUSY, vsi->state))
                usleep_range(1000, 2000);

        ret = ice_clear_vsi_promisc(&vsi->back->hw, vsi->idx,
                                    ICE_MCAST_VLAN_PROMISC_BITS, vid);
        if (ret) {
                netdev_err(netdev, "Error clearing multicast promiscuous mode on VSI %i\n",
                           vsi->vsi_num);
                vsi->current_netdev_flags |= IFF_ALLMULTI;
        }

        vlan_ops = ice_get_compat_vsi_vlan_ops(vsi);

        /* Make sure VLAN delete is successful before updating VLAN
         * information
         */
        vlan = ICE_VLAN(be16_to_cpu(proto), vid, 0);
        ret = vlan_ops->del_vlan(vsi, &vlan);
        if (ret)
                goto finish;

        /* Remove multicast promisc rule for the removed VLAN ID if
         * all-multicast is enabled.
         */
        if (vsi->current_netdev_flags & IFF_ALLMULTI)
                ice_fltr_clear_vsi_promisc(&vsi->back->hw, vsi->idx,
                                           ICE_MCAST_VLAN_PROMISC_BITS, vid);

        if (!ice_vsi_has_non_zero_vlans(vsi)) {
                /* Update look-up type of multicast promisc rule for VLAN 0
                 * from ICE_SW_LKUP_PROMISC_VLAN to ICE_SW_LKUP_PROMISC when
                 * all-multicast is enabled and VLAN 0 is the only VLAN rule.
                 */
                if (vsi->current_netdev_flags & IFF_ALLMULTI) {
                        ice_fltr_clear_vsi_promisc(&vsi->back->hw, vsi->idx,
                                                   ICE_MCAST_VLAN_PROMISC_BITS,
                                                   0);
                        ice_fltr_set_vsi_promisc(&vsi->back->hw, vsi->idx,
                                                 ICE_MCAST_PROMISC_BITS, 0);
                }
        }

finish:
        clear_bit(ICE_CFG_BUSY, vsi->state);

        return ret;
}

/**
 * ice_rep_indr_tc_block_unbind
 * @cb_priv: indirection block private data
 */
static void ice_rep_indr_tc_block_unbind(void *cb_priv)
{
        struct ice_indr_block_priv *indr_priv = cb_priv;

        list_del(&indr_priv->list);
        kfree(indr_priv);
}

/**
 * ice_tc_indir_block_unregister - Unregister TC indirect block notifications
 * @vsi: VSI struct which has the netdev
 */
static void ice_tc_indir_block_unregister(struct ice_vsi *vsi)
{
        struct ice_netdev_priv *np = netdev_priv(vsi->netdev);

        flow_indr_dev_unregister(ice_indr_setup_tc_cb, np,
                                 ice_rep_indr_tc_block_unbind);
}

/**
 * ice_tc_indir_block_register - Register TC indirect block notifications
 * @vsi: VSI struct which has the netdev
 *
 * Returns 0 on success, negative value on failure
 */
static int ice_tc_indir_block_register(struct ice_vsi *vsi)
{
        struct ice_netdev_priv *np;

        if (!vsi || !vsi->netdev)
                return -EINVAL;

        np = netdev_priv(vsi->netdev);

        INIT_LIST_HEAD(&np->tc_indr_block_priv_list);
        return flow_indr_dev_register(ice_indr_setup_tc_cb, np);
}

/**
 * ice_get_avail_q_count - Get count of queues in use
 * @pf_qmap: bitmap to get queue use count from
 * @lock: pointer to a mutex that protects access to pf_qmap
 * @size: size of the bitmap
 */
static u16
ice_get_avail_q_count(unsigned long *pf_qmap, struct mutex *lock, u16 size)
{
        unsigned long bit;
        u16 count = 0;

        mutex_lock(lock);
        for_each_clear_bit(bit, pf_qmap, size)
                count++;
        mutex_unlock(lock);

        return count;
}

/**
 * ice_get_avail_txq_count - Get count of Tx queues in use
 * @pf: pointer to an ice_pf instance
 */
u16 ice_get_avail_txq_count(struct ice_pf *pf)
{
        return ice_get_avail_q_count(pf->avail_txqs, &pf->avail_q_mutex,
                                     pf->max_pf_txqs);
}

/**
 * ice_get_avail_rxq_count - Get count of Rx queues in use
 * @pf: pointer to an ice_pf instance
 */
u16 ice_get_avail_rxq_count(struct ice_pf *pf)
{
        return ice_get_avail_q_count(pf->avail_rxqs, &pf->avail_q_mutex,
                                     pf->max_pf_rxqs);
}

/**
 * ice_deinit_pf - Unrolls initialziations done by ice_init_pf
 * @pf: board private structure to initialize
 */
static void ice_deinit_pf(struct ice_pf *pf)
{
        ice_service_task_stop(pf);
        mutex_destroy(&pf->lag_mutex);
        mutex_destroy(&pf->adev_mutex);
        mutex_destroy(&pf->sw_mutex);
        mutex_destroy(&pf->tc_mutex);
        mutex_destroy(&pf->avail_q_mutex);
        mutex_destroy(&pf->vfs.table_lock);

        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;
        }

        if (pf->ptp.clock)
                ptp_clock_unregister(pf->ptp.clock);

        xa_destroy(&pf->dyn_ports);
        xa_destroy(&pf->sf_nums);
}

/**
 * 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_RDMA_ENA, pf->flags);
        if (func_caps->common_cap.rdma)
                set_bit(ICE_FLAG_RDMA_ENA, pf->flags);
        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->vfs.num_supported = min_t(int, func_caps->num_allocd_vfs,
                                              ICE_MAX_SRIOV_VFS);
        }
        clear_bit(ICE_FLAG_RSS_ENA, pf->flags);
        if (func_caps->common_cap.rss_table_size)
                set_bit(ICE_FLAG_RSS_ENA, pf->flags);

        clear_bit(ICE_FLAG_FD_ENA, pf->flags);
        if (func_caps->fd_fltr_guar > 0 || func_caps->fd_fltr_best_effort > 0) {
                u16 unused;

                /* ctrl_vsi_idx will be set to a valid value when flow director
                 * is setup by ice_init_fdir
                 */
                pf->ctrl_vsi_idx = ICE_NO_VSI;
                set_bit(ICE_FLAG_FD_ENA, pf->flags);
                /* force guaranteed filter pool for PF */
                ice_alloc_fd_guar_item(&pf->hw, &unused,
                                       func_caps->fd_fltr_guar);
                /* force shared filter pool for PF */
                ice_alloc_fd_shrd_item(&pf->hw, &unused,
                                       func_caps->fd_fltr_best_effort);
        }

        clear_bit(ICE_FLAG_PTP_SUPPORTED, pf->flags);
        if (func_caps->common_cap.ieee_1588 &&
            !(pf->hw.mac_type == ICE_MAC_E830))
                set_bit(ICE_FLAG_PTP_SUPPORTED, 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);
        mutex_init(&pf->adev_mutex);
        mutex_init(&pf->lag_mutex);

        INIT_HLIST_HEAD(&pf->aq_wait_list);
        spin_lock_init(&pf->aq_wait_lock);
        init_waitqueue_head(&pf->aq_wait_queue);

        init_waitqueue_head(&pf->reset_wait_queue);

        /* setup service timer and periodic service task */
        timer_setup(&pf->serv_tmr, ice_service_timer, 0);
        pf->serv_tmr_period = HZ;
        INIT_WORK(&pf->serv_task, ice_service_task);
        clear_bit(ICE_SERVICE_SCHED, pf->state);

        mutex_init(&pf->avail_q_mutex);
        pf->avail_txqs = bitmap_zalloc(pf->max_pf_txqs, GFP_KERNEL);
        if (!pf->avail_txqs)
                return -ENOMEM;

        pf->avail_rxqs = bitmap_zalloc(pf->max_pf_rxqs, GFP_KERNEL);
        if (!pf->avail_rxqs) {
                bitmap_free(pf->avail_txqs);
                pf->avail_txqs = NULL;
                return -ENOMEM;
        }

        mutex_init(&pf->vfs.table_lock);
        hash_init(pf->vfs.table);
        if (ice_is_feature_supported(pf, ICE_F_MBX_LIMIT))
                wr32(&pf->hw, E830_MBX_PF_IN_FLIGHT_VF_MSGS_THRESH,
                     ICE_MBX_OVERFLOW_WATERMARK);
        else
                ice_mbx_init_snapshot(&pf->hw);

        xa_init(&pf->dyn_ports);
        xa_init(&pf->sf_nums);

        return 0;
}

/**
 * ice_is_wol_supported - check if WoL is supported
 * @hw: pointer to hardware info
 *
 * Check if WoL is supported based on the HW configuration.
 * Returns true if NVM supports and enables WoL for this port, false otherwise
 */
bool ice_is_wol_supported(struct ice_hw *hw)
{
        u16 wol_ctrl;

        /* A bit set to 1 in the NVM Software Reserved Word 2 (WoL control
         * word) indicates WoL is not supported on the corresponding PF ID.
         */
        if (ice_read_sr_word(hw, ICE_SR_NVM_WOL_CFG, &wol_ctrl))
                return false;

        return !(BIT(hw->port_info->lport) & wol_ctrl);
}

/**
 * ice_vsi_recfg_qs - Change the number of queues on a VSI
 * @vsi: VSI being changed
 * @new_rx: new number of Rx queues
 * @new_tx: new number of Tx queues
 * @locked: is adev device_lock held
 *
 * 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, bool locked)
{
        struct ice_pf *pf = vsi->back;
        int i, err = 0, timeout = 50;

        if (!new_rx && !new_tx)
                return -EINVAL;

        while (test_and_set_bit(ICE_CFG_BUSY, pf->state)) {
                timeout--;
                if (!timeout)
                        return -EBUSY;
                usleep_range(1000, 2000);
        }

        if (new_tx)
                vsi->req_txq = (u16)new_tx;
        if (new_rx)
                vsi->req_rxq = (u16)new_rx;

        /* set for the next time the netdev is started */
        if (!netif_running(vsi->netdev)) {
                err = ice_vsi_rebuild(vsi, ICE_VSI_FLAG_NO_INIT);
                if (err)
                        goto rebuild_err;
                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);
        err = ice_vsi_rebuild(vsi, ICE_VSI_FLAG_NO_INIT);
        if (err)
                goto rebuild_err;

        ice_for_each_traffic_class(i) {
                if (vsi->tc_cfg.ena_tc & BIT(i))
                        netdev_set_tc_queue(vsi->netdev,
                                            vsi->tc_cfg.tc_info[i].netdev_tc,
                                            vsi->tc_cfg.tc_info[i].qcount_tx,
                                            vsi->tc_cfg.tc_info[i].qoffset);
        }
        ice_pf_dcb_recfg(pf, locked);
        ice_vsi_open(vsi);
        goto done;

rebuild_err:
        dev_err(ice_pf_to_dev(pf), "Error during VSI rebuild: %d. Unload and reload the driver.\n",
                err);
done:
        clear_bit(ICE_CFG_BUSY, pf->state);
        return err;
}

/**
 * ice_set_safe_mode_vlan_cfg - configure PF VSI to allow all VLANs in safe mode
 * @pf: PF to configure
 *
 * No VLAN offloads/filtering are advertised in safe mode so make sure the PF
 * VSI can still Tx/Rx VLAN tagged packets.
 */
static void ice_set_safe_mode_vlan_cfg(struct ice_pf *pf)
{
        struct ice_vsi *vsi = ice_get_main_vsi(pf);
        struct ice_vsi_ctx *ctxt;
        struct ice_hw *hw;
        int status;

        if (!vsi)
                return;

        ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL);
        if (!ctxt)
                return;

        hw = &pf->hw;
        ctxt->info = vsi->info;

        ctxt->info.valid_sections =
                cpu_to_le16(ICE_AQ_VSI_PROP_VLAN_VALID |
                            ICE_AQ_VSI_PROP_SECURITY_VALID |
                            ICE_AQ_VSI_PROP_SW_VALID);

        /* disable VLAN anti-spoof */
        ctxt->info.sec_flags &= ~(ICE_AQ_VSI_SEC_TX_VLAN_PRUNE_ENA <<
                                  ICE_AQ_VSI_SEC_TX_PRUNE_ENA_S);

        /* disable VLAN pruning and keep all other settings */
        ctxt->info.sw_flags2 &= ~ICE_AQ_VSI_SW_FLAG_RX_VLAN_PRUNE_ENA;

        /* allow all VLANs on Tx and don't strip on Rx */
        ctxt->info.inner_vlan_flags = ICE_AQ_VSI_INNER_VLAN_TX_MODE_ALL |
                ICE_AQ_VSI_INNER_VLAN_EMODE_NOTHING;

        status = ice_update_vsi(hw, vsi->idx, ctxt, NULL);
        if (status) {
                dev_err(ice_pf_to_dev(vsi->back), "Failed to update VSI for safe mode VLANs, err %d aq_err %s\n",
                        status, ice_aq_str(hw->adminq.sq_last_status));
        } else {
                vsi->info.sec_flags = ctxt->info.sec_flags;
                vsi->info.sw_flags2 = ctxt->info.sw_flags2;
                vsi->info.inner_vlan_flags = ctxt->info.inner_vlan_flags;
        }

        kfree(ctxt);
}

/**
 * ice_log_pkg_init - log result of DDP package load
 * @hw: pointer to hardware info
 * @state: state of package load
 */
static void ice_log_pkg_init(struct ice_hw *hw, enum ice_ddp_state state)
{
        struct ice_pf *pf = hw->back;
        struct device *dev;

        dev = ice_pf_to_dev(pf);

        switch (state) {
        case ICE_DDP_PKG_SUCCESS:
                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);
                break;
        case ICE_DDP_PKG_SAME_VERSION_ALREADY_LOADED:
                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);
                break;
        case ICE_DDP_PKG_ALREADY_LOADED_NOT_SUPPORTED:
                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);
                break;
        case ICE_DDP_PKG_COMPATIBLE_ALREADY_LOADED:
                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);
                break;
        case ICE_DDP_PKG_FW_MISMATCH:
                dev_err(dev, "The firmware loaded on the device is not compatible with the DDP package.  Please update the device's NVM.  Entering safe mode.\n");
                break;
        case ICE_DDP_PKG_INVALID_FILE:
                dev_err(dev, "The DDP package file is invalid. Entering Safe Mode.\n");
                break;
        case ICE_DDP_PKG_FILE_VERSION_TOO_HIGH:
                dev_err(dev, "The DDP package file version is higher than the driver supports.  Please use an updated driver.  Entering Safe Mode.\n");
                break;
        case ICE_DDP_PKG_FILE_VERSION_TOO_LOW:
                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_DDP_PKG_FILE_SIGNATURE_INVALID:
                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");
                break;
        case ICE_DDP_PKG_FILE_REVISION_TOO_LOW:
                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");
                break;
        case ICE_DDP_PKG_LOAD_ERROR:
                dev_err(dev, "An error occurred on the device while loading the DDP package.  The device will be reset.\n");
                /* poll for reset to complete */
                if (ice_check_reset(hw))
                        dev_err(dev, "Error resetting device. Please reload the driver\n");
                break;
        case ICE_DDP_PKG_ERR:
        default:
                dev_err(dev, "An unknown error occurred when loading the DDP package.  Entering Safe Mode.\n");
                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_ddp_state state = ICE_DDP_PKG_ERR;
        struct device *dev = ice_pf_to_dev(pf);
        struct ice_hw *hw = &pf->hw;

        /* Load DDP Package */
        if (firmware && !hw->pkg_copy) {
                state = ice_copy_and_init_pkg(hw, firmware->data,
                                              firmware->size);
                ice_log_pkg_init(hw, state);
        } else if (!firmware && hw->pkg_copy) {
                /* Reload package during rebuild after CORER/GLOBR reset */
                state = ice_init_pkg(hw, hw->pkg_copy, hw->pkg_size);
                ice_log_pkg_init(hw, state);
        } else {
                dev_err(dev, "The DDP package file failed to load. Entering Safe Mode.\n");
        }

        if (!ice_is_init_pkg_successful(state)) {
                /* 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 0 on success, else error code
 */
static int ice_send_version(struct ice_pf *pf)
{
        struct ice_driver_ver dv;

        dv.major_ver = 0xff;
        dv.minor_ver = 0xff;
        dv.build_ver = 0xff;
        dv.subbuild_ver = 0;
        strscpy((char *)dv.driver_string, UTS_RELEASE,
                sizeof(dv.driver_string));
        return ice_aq_send_driver_ver(&pf->hw, &dv, NULL);
}

/**
 * ice_init_fdir - Initialize flow director VSI and configuration
 * @pf: pointer to the PF instance
 *
 * returns 0 on success, negative on error
 */
static int ice_init_fdir(struct ice_pf *pf)
{
        struct device *dev = ice_pf_to_dev(pf);
        struct ice_vsi *ctrl_vsi;
        int err;

        /* Side Band Flow Director needs to have a control VSI.
         * Allocate it and store it in the PF.
         */
        ctrl_vsi = ice_ctrl_vsi_setup(pf, pf->hw.port_info);
        if (!ctrl_vsi) {
                dev_dbg(dev, "could not create control VSI\n");
                return -ENOMEM;
        }

        err = ice_vsi_open_ctrl(ctrl_vsi);
        if (err) {
                dev_dbg(dev, "could not open control VSI\n");
                goto err_vsi_open;
        }

        mutex_init(&pf->hw.fdir_fltr_lock);

        err = ice_fdir_create_dflt_rules(pf);
        if (err)
                goto err_fdir_rule;

        return 0;

err_fdir_rule:
        ice_fdir_release_flows(&pf->hw);
        ice_vsi_close(ctrl_vsi);
err_vsi_open:
        ice_vsi_release(ctrl_vsi);
        if (pf->ctrl_vsi_idx != ICE_NO_VSI) {
                pf->vsi[pf->ctrl_vsi_idx] = NULL;
                pf->ctrl_vsi_idx = ICE_NO_VSI;
        }
        return err;
}

static void ice_deinit_fdir(struct ice_pf *pf)
{
        struct ice_vsi *vsi = ice_get_ctrl_vsi(pf);

        if (!vsi)
                return;

        ice_vsi_manage_fdir(vsi, false);
        ice_vsi_release(vsi);
        if (pf->ctrl_vsi_idx != ICE_NO_VSI) {
                pf->vsi[pf->ctrl_vsi_idx] = NULL;
                pf->ctrl_vsi_idx = ICE_NO_VSI;
        }

        mutex_destroy(&(&pf->hw)->fdir_fltr_lock);
}

/**
 * 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
 * @firmware: double pointer to firmware struct
 *
 * Return: zero when successful, negative values otherwise.
 */
static int ice_request_fw(struct ice_pf *pf, const struct firmware **firmware)
{
        char *opt_fw_filename = ice_get_opt_fw_name(pf);
        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);
                kfree(opt_fw_filename);
                if (!err)
                        return err;
        }
        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 err;
}

/**
 * ice_init_tx_topology - performs Tx topology initialization
 * @hw: pointer to the hardware structure
 * @firmware: pointer to firmware structure
 *
 * Return: zero when init was successful, negative values otherwise.
 */
static int
ice_init_tx_topology(struct ice_hw *hw, const struct firmware *firmware)
{
        u8 num_tx_sched_layers = hw->num_tx_sched_layers;
        struct ice_pf *pf = hw->back;
        struct device *dev;
        int err;

        dev = ice_pf_to_dev(pf);
        err = ice_cfg_tx_topo(hw, firmware->data, firmware->size);
        if (!err) {
                if (hw->num_tx_sched_layers > num_tx_sched_layers)
                        dev_info(dev, "Tx scheduling layers switching feature disabled\n");
                else
                        dev_info(dev, "Tx scheduling layers switching feature enabled\n");
                /* if there was a change in topology ice_cfg_tx_topo triggered
                 * a CORER and we need to re-init hw
                 */
                ice_deinit_hw(hw);
                err = ice_init_hw(hw);

                return err;
        } else if (err == -EIO) {
                dev_info(dev, "DDP package does not support Tx scheduling layers switching feature - please update to the latest DDP package and try again\n");
        }

        return 0;
}

/**
 * ice_init_supported_rxdids - Initialize supported Rx descriptor IDs
 * @hw: pointer to the hardware structure
 * @pf: pointer to pf structure
 *
 * The pf->supported_rxdids bitmap is used to indicate to VFs which descriptor
 * formats the PF hardware supports. The exact list of supported RXDIDs
 * depends on the loaded DDP package. The IDs can be determined by reading the
 * GLFLXP_RXDID_FLAGS register after the DDP package is loaded.
 *
 * Note that the legacy 32-byte RXDID 0 is always supported but is not listed
 * in the DDP package. The 16-byte legacy descriptor is never supported by
 * VFs.
 */
static void ice_init_supported_rxdids(struct ice_hw *hw, struct ice_pf *pf)
{
        pf->supported_rxdids = BIT(ICE_RXDID_LEGACY_1);

        for (int i = ICE_RXDID_FLEX_NIC; i < ICE_FLEX_DESC_RXDID_MAX_NUM; i++) {
                u32 regval;

                regval = rd32(hw, GLFLXP_RXDID_FLAGS(i, 0));
                if ((regval >> GLFLXP_RXDID_FLAGS_FLEXIFLAG_4N_S)
                        & GLFLXP_RXDID_FLAGS_FLEXIFLAG_4N_M)
                        pf->supported_rxdids |= BIT(i);
        }
}

/**
 * ice_init_ddp_config - DDP related configuration
 * @hw: pointer to the hardware structure
 * @pf: pointer to pf structure
 *
 * This function loads DDP file from the disk, then initializes Tx
 * topology. At the end DDP package is loaded on the card.
 *
 * Return: zero when init was successful, negative values otherwise.
 */
static int ice_init_ddp_config(struct ice_hw *hw, struct ice_pf *pf)
{
        struct device *dev = ice_pf_to_dev(pf);
        const struct firmware *firmware = NULL;
        int err;

        err = ice_request_fw(pf, &firmware);
        if (err) {
                dev_err(dev, "Fail during requesting FW: %d\n", err);
                return err;
        }

        err = ice_init_tx_topology(hw, firmware);
        if (err) {
                dev_err(dev, "Fail during initialization of Tx topology: %d\n",
                        err);
                release_firmware(firmware);
                return err;
        }

        /* Download firmware to device */
        ice_load_pkg(firmware, pf);
        release_firmware(firmware);

        /* Initialize the supported Rx descriptor IDs after loading DDP */
        ice_init_supported_rxdids(hw, pf);

        return 0;
}

/**
 * ice_print_wake_reason - show the wake up cause in the log
 * @pf: pointer to the PF struct
 */
static void ice_print_wake_reason(struct ice_pf *pf)
{
        u32 wus = pf->wakeup_reason;
        const char *wake_str;

        /* if no wake event, nothing to print */
        if (!wus)
                return;

        if (wus & PFPM_WUS_LNKC_M)
                wake_str = "Link\n";
        else if (wus & PFPM_WUS_MAG_M)
                wake_str = "Magic Packet\n";
        else if (wus & PFPM_WUS_MNG_M)
                wake_str = "Management\n";
        else if (wus & PFPM_WUS_FW_RST_WK_M)
                wake_str = "Firmware Reset\n";
        else
                wake_str = "Unknown\n";

        dev_info(ice_pf_to_dev(pf), "Wake reason: %s", wake_str);
}

/**
 * ice_pf_fwlog_update_module - update 1 module
 * @pf: pointer to the PF struct
 * @log_level: log_level to use for the @module
 * @module: module to update
 */
void ice_pf_fwlog_update_module(struct ice_pf *pf, int log_level, int module)
{
        struct ice_hw *hw = &pf->hw;

        hw->fwlog_cfg.module_entries[module].log_level = log_level;
}

/**
 * ice_register_netdev - register netdev
 * @vsi: pointer to the VSI struct
 */
static int ice_register_netdev(struct ice_vsi *vsi)
{
        int err;

        if (!vsi || !vsi->netdev)
                return -EIO;

        err = register_netdev(vsi->netdev);
        if (err)
                return err;

        set_bit(ICE_VSI_NETDEV_REGISTERED, vsi->state);
        netif_carrier_off(vsi->netdev);
        netif_tx_stop_all_queues(vsi->netdev);

        return 0;
}

static void ice_unregister_netdev(struct ice_vsi *vsi)
{
        if (!vsi || !vsi->netdev)
                return;

        unregister_netdev(vsi->netdev);
        clear_bit(ICE_VSI_NETDEV_REGISTERED, vsi->state);
}

/**
 * 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_netdev_priv *np;
        struct net_device *netdev;
        u8 mac_addr[ETH_ALEN];

        netdev = alloc_etherdev_mqs(sizeof(*np), vsi->alloc_txq,
                                    vsi->alloc_rxq);
        if (!netdev)
                return -ENOMEM;

        set_bit(ICE_VSI_NETDEV_ALLOCD, vsi->state);
        vsi->netdev = netdev;
        np = netdev_priv(netdev);
        np->vsi = vsi;

        ice_set_netdev_features(netdev);
        ice_set_ops(vsi);

        if (vsi->type == ICE_VSI_PF) {
                SET_NETDEV_DEV(netdev, ice_pf_to_dev(vsi->back));
                ether_addr_copy(mac_addr, vsi->port_info->mac.perm_addr);
                eth_hw_addr_set(netdev, mac_addr);
        }

        netdev->priv_flags |= IFF_UNICAST_FLT;

        /* Setup netdev TC information */
        ice_vsi_cfg_netdev_tc(vsi, vsi->tc_cfg.ena_tc);

        netdev->max_mtu = ICE_MAX_MTU;

        return 0;
}

static void ice_decfg_netdev(struct ice_vsi *vsi)
{
        clear_bit(ICE_VSI_NETDEV_ALLOCD, vsi->state);
        free_netdev(vsi->netdev);
        vsi->netdev = NULL;
}

/**
 * ice_wait_for_fw - wait for full FW readiness
 * @hw: pointer to the hardware structure
 * @timeout: milliseconds that can elapse before timing out
 */
static int ice_wait_for_fw(struct ice_hw *hw, u32 timeout)
{
        int fw_loading;
        u32 elapsed = 0;

        while (elapsed <= timeout) {
                fw_loading = rd32(hw, GL_MNG_FWSM) & GL_MNG_FWSM_FW_LOADING_M;

                /* firmware was not yet loaded, we have to wait more */
                if (fw_loading) {
                        elapsed += 100;
                        msleep(100);
                        continue;
                }
                return 0;
        }

        return -ETIMEDOUT;
}

int ice_init_dev(struct ice_pf *pf)
{
        struct device *dev = ice_pf_to_dev(pf);
        struct ice_hw *hw = &pf->hw;
        int err;

        err = ice_init_hw(hw);
        if (err) {
                dev_err(dev, "ice_init_hw failed: %d\n", err);
                return err;
        }

        /* Some cards require longer initialization times
         * due to necessity of loading FW from an external source.
         * This can take even half a minute.
         */
        if (ice_is_pf_c827(hw)) {
                err = ice_wait_for_fw(hw, 30000);
                if (err) {
                        dev_err(dev, "ice_wait_for_fw timed out");
                        return err;
                }
        }

        ice_init_feature_support(pf);

        err = ice_init_ddp_config(hw, pf);

        /* if ice_init_ddp_config fails, ICE_FLAG_ADV_FEATURES bit won't be
         * set in pf->state, which will cause ice_is_safe_mode to return
         * true
         */
        if (err || ice_is_safe_mode(pf)) {
                /* 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;
        }

        pf->hw.udp_tunnel_nic.set_port = ice_udp_tunnel_set_port;
        pf->hw.udp_tunnel_nic.unset_port = ice_udp_tunnel_unset_port;
        pf->hw.udp_tunnel_nic.flags = UDP_TUNNEL_NIC_INFO_MAY_SLEEP;
        pf->hw.udp_tunnel_nic.shared = &pf->hw.udp_tunnel_shared;
        if (pf->hw.tnl.valid_count[TNL_VXLAN]) {
                pf->hw.udp_tunnel_nic.tables[0].n_entries =
                        pf->hw.tnl.valid_count[TNL_VXLAN];
                pf->hw.udp_tunnel_nic.tables[0].tunnel_types =
                        UDP_TUNNEL_TYPE_VXLAN;
        }
        if (pf->hw.tnl.valid_count[TNL_GENEVE]) {
                pf->hw.udp_tunnel_nic.tables[1].n_entries =
                        pf->hw.tnl.valid_count[TNL_GENEVE];
                pf->hw.udp_tunnel_nic.tables[1].tunnel_types =
                        UDP_TUNNEL_TYPE_GENEVE;
        }

        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_scheme;
        }

        /* 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_req_irq_msix_misc;
        }

        return 0;

err_req_irq_msix_misc:
        ice_clear_interrupt_scheme(pf);
err_init_interrupt_scheme:
        ice_deinit_pf(pf);
err_init_pf:
        ice_deinit_hw(hw);
        return err;
}

void ice_deinit_dev(struct ice_pf *pf)
{
        ice_free_irq_msix_misc(pf);
        ice_deinit_pf(pf);
        ice_deinit_hw(&pf->hw);

        /* Service task is already stopped, so call reset directly. */
        ice_reset(&pf->hw, ICE_RESET_PFR);
        pci_wait_for_pending_transaction(pf->pdev);
        ice_clear_interrupt_scheme(pf);
}

static void ice_init_features(struct ice_pf *pf)
{
        struct device *dev = ice_pf_to_dev(pf);

        if (ice_is_safe_mode(pf))
                return;

        /* initialize DDP driven features */
        if (test_bit(ICE_FLAG_PTP_SUPPORTED, pf->flags))
                ice_ptp_init(pf);

        if (ice_is_feature_supported(pf, ICE_F_GNSS))
                ice_gnss_init(pf);

        if (ice_is_feature_supported(pf, ICE_F_CGU) ||
            ice_is_feature_supported(pf, ICE_F_PHY_RCLK))
                ice_dpll_init(pf);

        /* Note: Flow director init failure is non-fatal to load */
        if (ice_init_fdir(pf))
                dev_err(dev, "could not initialize flow director\n");

        /* Note: DCB init failure is non-fatal to load */
        if (ice_init_pf_dcb(pf, false)) {
                clear_bit(ICE_FLAG_DCB_CAPABLE, pf->flags);
                clear_bit(ICE_FLAG_DCB_ENA, pf->flags);
        } else {
                ice_cfg_lldp_mib_change(&pf->hw, true);
        }

        if (ice_init_lag(pf))
                dev_warn(dev, "Failed to init link aggregation support\n");

        ice_hwmon_init(pf);
}

static void ice_deinit_features(struct ice_pf *pf)
{
        if (ice_is_safe_mode(pf))
                return;

        ice_deinit_lag(pf);
        if (test_bit(ICE_FLAG_DCB_CAPABLE, pf->flags))
                ice_cfg_lldp_mib_change(&pf->hw, false);
        ice_deinit_fdir(pf);
        if (ice_is_feature_supported(pf, ICE_F_GNSS))
                ice_gnss_exit(pf);
        if (test_bit(ICE_FLAG_PTP_SUPPORTED, pf->flags))
                ice_ptp_release(pf);
        if (test_bit(ICE_FLAG_DPLL, pf->flags))
                ice_dpll_deinit(pf);
        if (pf->eswitch_mode == DEVLINK_ESWITCH_MODE_SWITCHDEV)
                xa_destroy(&pf->eswitch.reprs);
}

static void ice_init_wakeup(struct ice_pf *pf)
{
        /* Save wakeup reason register for later use */
        pf->wakeup_reason = rd32(&pf->hw, PFPM_WUS);

        /* check for a power management event */
        ice_print_wake_reason(pf);

        /* clear wake status, all bits */
        wr32(&pf->hw, PFPM_WUS, U32_MAX);

        /* Disable WoL at init, wait for user to enable */
        device_set_wakeup_enable(ice_pf_to_dev(pf), false);
}

static int ice_init_link(struct ice_pf *pf)
{
        struct device *dev = ice_pf_to_dev(pf);
        int err;

        err = ice_init_link_events(pf->hw.port_info);
        if (err) {
                dev_err(dev, "ice_init_link_events failed: %d\n", err);
                return err;
        }

        /* not a fatal error if this fails */
        err = ice_init_nvm_phy_type(pf->hw.port_info);
        if (err)
                dev_err(dev, "ice_init_nvm_phy_type failed: %d\n", err);

        /* not a fatal error if this fails */
        err = ice_update_link_info(pf->hw.port_info);
        if (err)
                dev_err(dev, "ice_update_link_info failed: %d\n", err);

        ice_init_link_dflt_override(pf->hw.port_info);

        ice_check_link_cfg_err(pf,
                               pf->hw.port_info->phy.link_info.link_cfg_err);

        /* if media available, initialize PHY settings */
        if (pf->hw.port_info->phy.link_info.link_info &
            ICE_AQ_MEDIA_AVAILABLE) {
                /* not a fatal error if this fails */
                err = ice_init_phy_user_cfg(pf->hw.port_info);
                if (err)
                        dev_err(dev, "ice_init_phy_user_cfg failed: %d\n", err);

                if (!test_bit(ICE_FLAG_LINK_DOWN_ON_CLOSE_ENA, pf->flags)) {
                        struct ice_vsi *vsi = ice_get_main_vsi(pf);

                        if (vsi)
                                ice_configure_phy(vsi);
                }
        } else {
                set_bit(ICE_FLAG_NO_MEDIA, pf->flags);
        }

        return err;
}

static int ice_init_pf_sw(struct ice_pf *pf)
{
        bool dvm = ice_is_dvm_ena(&pf->hw);
        struct ice_vsi *vsi;
        int err;

        /* create switch struct for the switch element created by FW on boot */
        pf->first_sw = kzalloc(sizeof(*pf->first_sw), GFP_KERNEL);
        if (!pf->first_sw)
                return -ENOMEM;

        if (pf->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 = pf->hw.port_info->sw_id;

        err = ice_aq_set_port_params(pf->hw.port_info, dvm, NULL);
        if (err)
                goto err_aq_set_port_params;

        vsi = ice_pf_vsi_setup(pf, pf->hw.port_info);
        if (!vsi) {
                err = -ENOMEM;
                goto err_pf_vsi_setup;
        }

        return 0;

err_pf_vsi_setup:
err_aq_set_port_params:
        kfree(pf->first_sw);
        return err;
}

static void ice_deinit_pf_sw(struct ice_pf *pf)
{
        struct ice_vsi *vsi = ice_get_main_vsi(pf);

        if (!vsi)
                return;

        ice_vsi_release(vsi);
        kfree(pf->first_sw);
}

static int ice_alloc_vsis(struct ice_pf *pf)
{
        struct device *dev = ice_pf_to_dev(pf);

        pf->num_alloc_vsi = pf->hw.func_caps.guar_num_vsi;
        if (!pf->num_alloc_vsi)
                return -EIO;

        if (pf->num_alloc_vsi > UDP_TUNNEL_NIC_MAX_SHARING_DEVICES) {
                dev_warn(dev,
                         "limiting the VSI count due to UDP tunnel limitation %d > %d\n",
                         pf->num_alloc_vsi, UDP_TUNNEL_NIC_MAX_SHARING_DEVICES);
                pf->num_alloc_vsi = UDP_TUNNEL_NIC_MAX_SHARING_DEVICES;
        }

        pf->vsi = devm_kcalloc(dev, pf->num_alloc_vsi, sizeof(*pf->vsi),
                               GFP_KERNEL);
        if (!pf->vsi)
                return -ENOMEM;

        pf->vsi_stats = devm_kcalloc(dev, pf->num_alloc_vsi,
                                     sizeof(*pf->vsi_stats), GFP_KERNEL);
        if (!pf->vsi_stats) {
                devm_kfree(dev, pf->vsi);
                return -ENOMEM;
        }

        return 0;
}

static void ice_dealloc_vsis(struct ice_pf *pf)
{
        devm_kfree(ice_pf_to_dev(pf), pf->vsi_stats);
        pf->vsi_stats = NULL;

        pf->num_alloc_vsi = 0;
        devm_kfree(ice_pf_to_dev(pf), pf->vsi);
        pf->vsi = NULL;
}

static int ice_init_devlink(struct ice_pf *pf)
{
        int err;

        err = ice_devlink_register_params(pf);
        if (err)
                return err;

        ice_devlink_init_regions(pf);
        ice_devlink_register(pf);

        return 0;
}

static void ice_deinit_devlink(struct ice_pf *pf)
{
        ice_devlink_unregister(pf);
        ice_devlink_destroy_regions(pf);
        ice_devlink_unregister_params(pf);
}

static int ice_init(struct ice_pf *pf)
{
        int err;

        err = ice_init_dev(pf);
        if (err)
                return err;

        err = ice_alloc_vsis(pf);
        if (err)
                goto err_alloc_vsis;

        err = ice_init_pf_sw(pf);
        if (err)
                goto err_init_pf_sw;

        ice_init_wakeup(pf);

        err = ice_init_link(pf);
        if (err)
                goto err_init_link;

        err = ice_send_version(pf);
        if (err)
                goto err_init_link;

        ice_verify_cacheline_size(pf);

        if (ice_is_safe_mode(pf))
                ice_set_safe_mode_vlan_cfg(pf);
        else
                /* print PCI link speed and width */
                pcie_print_link_status(pf->pdev);

        /* ready to go, so clear down state bit */
        clear_bit(ICE_DOWN, pf->state);
        clear_bit(ICE_SERVICE_DIS, pf->state);

        /* since everything is good, start the service timer */
        mod_timer(&pf->serv_tmr, round_jiffies(jiffies + pf->serv_tmr_period));

        return 0;

err_init_link:
        ice_deinit_pf_sw(pf);
err_init_pf_sw:
        ice_dealloc_vsis(pf);
err_alloc_vsis:
        ice_deinit_dev(pf);
        return err;
}

static void ice_deinit(struct ice_pf *pf)
{
        set_bit(ICE_SERVICE_DIS, pf->state);
        set_bit(ICE_DOWN, pf->state);

        ice_deinit_pf_sw(pf);
        ice_dealloc_vsis(pf);
        ice_deinit_dev(pf);
}

/**
 * ice_load - load pf by init hw and starting VSI
 * @pf: pointer to the pf instance
 *
 * This function has to be called under devl_lock.
 */
int ice_load(struct ice_pf *pf)
{
        struct ice_vsi *vsi;
        int err;

        devl_assert_locked(priv_to_devlink(pf));

        vsi = ice_get_main_vsi(pf);

        /* init channel list */
        INIT_LIST_HEAD(&vsi->ch_list);

        err = ice_cfg_netdev(vsi);
        if (err)
                return err;

        /* Setup DCB netlink interface */
        ice_dcbnl_setup(vsi);

        err = ice_init_mac_fltr(pf);
        if (err)
                goto err_init_mac_fltr;

        err = ice_devlink_create_pf_port(pf);
        if (err)
                goto err_devlink_create_pf_port;

        SET_NETDEV_DEVLINK_PORT(vsi->netdev, &pf->devlink_port);

        err = ice_register_netdev(vsi);
        if (err)
                goto err_register_netdev;

        err = ice_tc_indir_block_register(vsi);
        if (err)
                goto err_tc_indir_block_register;

        ice_napi_add(vsi);

        err = ice_init_rdma(pf);
        if (err)
                goto err_init_rdma;

        ice_init_features(pf);
        ice_service_task_restart(pf);

        clear_bit(ICE_DOWN, pf->state);

        return 0;

err_init_rdma:
        ice_tc_indir_block_unregister(vsi);
err_tc_indir_block_register:
        ice_unregister_netdev(vsi);
err_register_netdev:
        ice_devlink_destroy_pf_port(pf);
err_devlink_create_pf_port:
err_init_mac_fltr:
        ice_decfg_netdev(vsi);
        return err;
}

/**
 * ice_unload - unload pf by stopping VSI and deinit hw
 * @pf: pointer to the pf instance
 *
 * This function has to be called under devl_lock.
 */
void ice_unload(struct ice_pf *pf)
{
        struct ice_vsi *vsi = ice_get_main_vsi(pf);

        devl_assert_locked(priv_to_devlink(pf));

        ice_deinit_features(pf);
        ice_deinit_rdma(pf);
        ice_tc_indir_block_unregister(vsi);
        ice_unregister_netdev(vsi);
        ice_devlink_destroy_pf_port(pf);
        ice_decfg_netdev(vsi);
}

/**
 * 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_adapter *adapter;
        struct ice_pf *pf;
        struct ice_hw *hw;
        int err;

        if (pdev->is_virtfn) {
                dev_err(dev, "can't probe a virtual function\n");
                return -EINVAL;
        }

        /* when under a kdump kernel initiate a reset before enabling the
         * device in order to clear out any pending DMA transactions. These
         * transactions can cause some systems to machine check when doing
         * the pcim_enable_device() below.
         */
        if (is_kdump_kernel()) {
                pci_save_state(pdev);
                pci_clear_master(pdev);
                err = pcie_flr(pdev);
                if (err)
                        return err;
                pci_restore_state(pdev);
        }

        /* 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), dev_driver_string(dev));
        if (err) {
                dev_err(dev, "BAR0 I/O map error %d\n", err);
                return err;
        }

        pf = ice_allocate_pf(dev);
        if (!pf)
                return -ENOMEM;

        /* initialize Auxiliary index to invalid value */
        pf->aux_idx = -1;

        /* set up for high or low DMA */
        err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64));
        if (err) {
                dev_err(dev, "DMA configuration failed: 0x%x\n", err);
                return err;
        }

        pci_set_master(pdev);

        adapter = ice_adapter_get(pdev);
        if (IS_ERR(adapter))
                return PTR_ERR(adapter);

        pf->pdev = pdev;
        pf->adapter = adapter;
        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->port_info = NULL;
        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);

#ifndef CONFIG_DYNAMIC_DEBUG
        if (debug < -1)
                hw->debug_mask = debug;
#endif

        err = ice_init(pf);
        if (err)
                goto err_init;

        devl_lock(priv_to_devlink(pf));
        err = ice_load(pf);
        if (err)
                goto err_load;

        err = ice_init_devlink(pf);
        if (err)
                goto err_init_devlink;
        devl_unlock(priv_to_devlink(pf));

        return 0;

err_init_devlink:
        ice_unload(pf);
err_load:
        devl_unlock(priv_to_devlink(pf));
        ice_deinit(pf);
err_init:
        ice_adapter_put(pdev);
        return err;
}

/**
 * ice_set_wake - enable or disable Wake on LAN
 * @pf: pointer to the PF struct
 *
 * Simple helper for WoL control
 */
static void ice_set_wake(struct ice_pf *pf)
{
        struct ice_hw *hw = &pf->hw;
        bool wol = pf->wol_ena;

        /* clear wake state, otherwise new wake events won't fire */
        wr32(hw, PFPM_WUS, U32_MAX);

        /* enable / disable APM wake up, no RMW needed */
        wr32(hw, PFPM_APM, wol ? PFPM_APM_APME_M : 0);

        /* set magic packet filter enabled */
        wr32(hw, PFPM_WUFC, wol ? PFPM_WUFC_MAG_M : 0);
}

/**
 * ice_setup_mc_magic_wake - setup device to wake on multicast magic packet
 * @pf: pointer to the PF struct
 *
 * Issue firmware command to enable multicast magic wake, making
 * sure that any locally administered address (LAA) is used for
 * wake, and that PF reset doesn't undo the LAA.
 */
static void ice_setup_mc_magic_wake(struct ice_pf *pf)
{
        struct device *dev = ice_pf_to_dev(pf);
        struct ice_hw *hw = &pf->hw;
        u8 mac_addr[ETH_ALEN];
        struct ice_vsi *vsi;
        int status;
        u8 flags;

        if (!pf->wol_ena)
                return;

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

        /* Get current MAC address in case it's an LAA */
        if (vsi->netdev)
                ether_addr_copy(mac_addr, vsi->netdev->dev_addr);
        else
                ether_addr_copy(mac_addr, vsi->port_info->mac.perm_addr);

        flags = ICE_AQC_MAN_MAC_WR_MC_MAG_EN |
                ICE_AQC_MAN_MAC_UPDATE_LAA_WOL |
                ICE_AQC_MAN_MAC_WR_WOL_LAA_PFR_KEEP;

        status = ice_aq_manage_mac_write(hw, mac_addr, flags, NULL);
        if (status)
                dev_err(dev, "Failed to enable Multicast Magic Packet wake, err %d aq_err %s\n",
                        status, ice_aq_str(hw->adminq.sq_last_status));
}

/**
 * ice_remove - Device removal routine
 * @pdev: PCI device information struct
 */
static void ice_remove(struct pci_dev *pdev)
{
        struct ice_pf *pf = pci_get_drvdata(pdev);
        int i;

        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);
        }

        ice_hwmon_exit(pf);

        ice_service_task_stop(pf);
        ice_aq_cancel_waiting_tasks(pf);
        set_bit(ICE_DOWN, pf->state);

        if (!ice_is_safe_mode(pf))
                ice_remove_arfs(pf);

        devl_lock(priv_to_devlink(pf));
        ice_dealloc_all_dynamic_ports(pf);
        ice_deinit_devlink(pf);

        ice_unload(pf);
        devl_unlock(priv_to_devlink(pf));

        ice_deinit(pf);
        ice_vsi_release_all(pf);

        ice_setup_mc_magic_wake(pf);
        ice_set_wake(pf);

        ice_adapter_put(pdev);
}

/**
 * ice_shutdown - PCI callback for shutting down device
 * @pdev: PCI device information struct
 */
static void ice_shutdown(struct pci_dev *pdev)
{
        struct ice_pf *pf = pci_get_drvdata(pdev);

        ice_remove(pdev);

        if (system_state == SYSTEM_POWER_OFF) {
                pci_wake_from_d3(pdev, pf->wol_ena);
                pci_set_power_state(pdev, PCI_D3hot);
        }
}

/**
 * ice_prepare_for_shutdown - prep for PCI shutdown
 * @pf: board private structure
 *
 * Inform or close all dependent features in prep for PCI device shutdown
 */
static void ice_prepare_for_shutdown(struct ice_pf *pf)
{
        struct ice_hw *hw = &pf->hw;
        u32 v;

        /* Notify VFs of impending reset */
        if (ice_check_sq_alive(hw, &hw->mailboxq))
                ice_vc_notify_reset(pf);

        dev_dbg(ice_pf_to_dev(pf), "Tearing down internal switch for shutdown\n");

        /* disable the VSIs and their queues that are not already DOWN */
        ice_pf_dis_all_vsi(pf, false);

        ice_for_each_vsi(pf, v)
                if (pf->vsi[v])
                        pf->vsi[v]->vsi_num = 0;

        ice_shutdown_all_ctrlq(hw, true);
}

/**
 * ice_reinit_interrupt_scheme - Reinitialize interrupt scheme
 * @pf: board private structure to reinitialize
 *
 * This routine reinitialize interrupt scheme that was cleared during
 * power management suspend callback.
 *
 * This should be called during resume routine to re-allocate the q_vectors
 * and reacquire interrupts.
 */
static int ice_reinit_interrupt_scheme(struct ice_pf *pf)
{
        struct device *dev = ice_pf_to_dev(pf);
        int ret, v;

        /* Since we clear MSIX flag during suspend, we need to
         * set it back during resume...
         */

        ret = ice_init_interrupt_scheme(pf);
        if (ret) {
                dev_err(dev, "Failed to re-initialize interrupt %d\n", ret);
                return ret;
        }

        /* Remap vectors and rings, after successful re-init interrupts */
        ice_for_each_vsi(pf, v) {
                if (!pf->vsi[v])
                        continue;

                ret = ice_vsi_alloc_q_vectors(pf->vsi[v]);
                if (ret)
                        goto err_reinit;
                ice_vsi_map_rings_to_vectors(pf->vsi[v]);
                rtnl_lock();
                ice_vsi_set_napi_queues(pf->vsi[v]);
                rtnl_unlock();
        }

        ret = ice_req_irq_msix_misc(pf);
        if (ret) {
                dev_err(dev, "Setting up misc vector failed after device suspend %d\n",
                        ret);
                goto err_reinit;
        }

        return 0;

err_reinit:
        while (v--)
                if (pf->vsi[v]) {
                        rtnl_lock();
                        ice_vsi_clear_napi_queues(pf->vsi[v]);
                        rtnl_unlock();
                        ice_vsi_free_q_vectors(pf->vsi[v]);
                }

        return ret;
}

/**
 * ice_suspend
 * @dev: generic device information structure
 *
 * Power Management callback to quiesce the device and prepare
 * for D3 transition.
 */
static int ice_suspend(struct device *dev)
{
        struct pci_dev *pdev = to_pci_dev(dev);
        struct ice_pf *pf;
        int disabled, v;

        pf = pci_get_drvdata(pdev);

        if (!ice_pf_state_is_nominal(pf)) {
                dev_err(dev, "Device is not ready, no need to suspend it\n");
                return -EBUSY;
        }

        /* Stop watchdog tasks until resume completion.
         * Even though it is most likely that the service task is
         * disabled if the device is suspended or down, the service task's
         * state is controlled by a different state bit, and we should
         * store and honor whatever state that bit is in at this point.
         */
        disabled = ice_service_task_stop(pf);

        ice_deinit_rdma(pf);

        /* Already suspended?, then there is nothing to do */
        if (test_and_set_bit(ICE_SUSPENDED, pf->state)) {
                if (!disabled)
                        ice_service_task_restart(pf);
                return 0;
        }

        if (test_bit(ICE_DOWN, pf->state) ||
            ice_is_reset_in_progress(pf->state)) {
                dev_err(dev, "can't suspend device in reset or already down\n");
                if (!disabled)
                        ice_service_task_restart(pf);
                return 0;
        }

        ice_setup_mc_magic_wake(pf);

        ice_prepare_for_shutdown(pf);

        ice_set_wake(pf);

        /* Free vectors, clear the interrupt scheme and release IRQs
         * for proper hibernation, especially with large number of CPUs.
         * Otherwise hibernation might fail when mapping all the vectors back
         * to CPU0.
         */
        ice_free_irq_msix_misc(pf);
        ice_for_each_vsi(pf, v) {
                if (!pf->vsi[v])
                        continue;
                rtnl_lock();
                ice_vsi_clear_napi_queues(pf->vsi[v]);
                rtnl_unlock();
                ice_vsi_free_q_vectors(pf->vsi[v]);
        }
        ice_clear_interrupt_scheme(pf);

        pci_save_state(pdev);
        pci_wake_from_d3(pdev, pf->wol_ena);
        pci_set_power_state(pdev, PCI_D3hot);
        return 0;
}

/**
 * ice_resume - PM callback for waking up from D3
 * @dev: generic device information structure
 */
static int ice_resume(struct device *dev)
{
        struct pci_dev *pdev = to_pci_dev(dev);
        enum ice_reset_req reset_type;
        struct ice_pf *pf;
        struct ice_hw *hw;
        int ret;

        pci_set_power_state(pdev, PCI_D0);
        pci_restore_state(pdev);
        pci_save_state(pdev);

        if (!pci_device_is_present(pdev))
                return -ENODEV;

        ret = pci_enable_device_mem(pdev);
        if (ret) {
                dev_err(dev, "Cannot enable device after suspend\n");
                return ret;
        }

        pf = pci_get_drvdata(pdev);
        hw = &pf->hw;

        pf->wakeup_reason = rd32(hw, PFPM_WUS);
        ice_print_wake_reason(pf);

        /* We cleared the interrupt scheme when we suspended, so we need to
         * restore it now to resume device functionality.
         */
        ret = ice_reinit_interrupt_scheme(pf);
        if (ret)
                dev_err(dev, "Cannot restore interrupt scheme: %d\n", ret);

        ret = ice_init_rdma(pf);
        if (ret)
                dev_err(dev, "Reinitialize RDMA during resume failed: %d\n",
                        ret);

        clear_bit(ICE_DOWN, pf->state);
        /* Now perform PF reset and rebuild */
        reset_type = ICE_RESET_PFR;
        /* re-enable service task for reset, but allow reset to schedule it */
        clear_bit(ICE_SERVICE_DIS, pf->state);

        if (ice_schedule_reset(pf, reset_type))
                dev_err(dev, "Reset during resume failed.\n");

        clear_bit(ICE_SUSPENDED, pf->state);
        ice_service_task_restart(pf);

        /* Restart the service task */
        mod_timer(&pf->serv_tmr, round_jiffies(jiffies + pf->serv_tmr_period));

        return 0;
}

/**
 * ice_pci_err_detected - warning that PCI error has been detected
 * @pdev: PCI device information struct
 * @err: the type of PCI error
 *
 * Called to warn that something happened on the PCI bus and the error handling
 * is in progress.  Allows the driver to gracefully prepare/handle PCI errors.
 */
static pci_ers_result_t
ice_pci_err_detected(struct pci_dev *pdev, pci_channel_state_t err)
{
        struct ice_pf *pf = pci_get_drvdata(pdev);

        if (!pf) {
                dev_err(&pdev->dev, "%s: unrecoverable device error %d\n",
                        __func__, err);
                return PCI_ERS_RESULT_DISCONNECT;
        }

        if (!test_bit(ICE_SUSPENDED, pf->state)) {
                ice_service_task_stop(pf);

                if (!test_bit(ICE_PREPARED_FOR_RESET, pf->state)) {
                        set_bit(ICE_PFR_REQ, pf->state);
                        ice_prepare_for_reset(pf, ICE_RESET_PFR);
                }
        }

        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;
        }

        return result;
}

/**
 * ice_pci_err_resume - restart operations after PCI error recovery
 * @pdev: PCI device information struct
 *
 * Called to allow the driver to bring things back up after PCI error and/or
 * reset recovery have finished
 */
static void ice_pci_err_resume(struct pci_dev *pdev)
{
        struct ice_pf *pf = pci_get_drvdata(pdev);

        if (!pf) {
                dev_err(&pdev->dev, "%s failed, device is unrecoverable\n",
                        __func__);
                return;
        }

        if (test_bit(ICE_SUSPENDED, pf->state)) {
                dev_dbg(&pdev->dev, "%s failed to resume normal operations!\n",
                        __func__);
                return;
        }

        ice_restore_all_vfs_msi_state(pf);

        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_RESET_PFR);
                }
        }
}

/**
 * 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) },
        { PCI_VDEVICE(INTEL, ICE_DEV_ID_E810C_QSFP) },
        { PCI_VDEVICE(INTEL, ICE_DEV_ID_E810C_SFP) },
        { PCI_VDEVICE(INTEL, ICE_DEV_ID_E810_XXV_BACKPLANE) },
        { PCI_VDEVICE(INTEL, ICE_DEV_ID_E810_XXV_QSFP) },
        { PCI_VDEVICE(INTEL, ICE_DEV_ID_E810_XXV_SFP) },
        { PCI_VDEVICE(INTEL, ICE_DEV_ID_E823C_BACKPLANE) },
        { PCI_VDEVICE(INTEL, ICE_DEV_ID_E823C_QSFP) },
        { PCI_VDEVICE(INTEL, ICE_DEV_ID_E823C_SFP) },
        { PCI_VDEVICE(INTEL, ICE_DEV_ID_E823C_10G_BASE_T) },
        { PCI_VDEVICE(INTEL, ICE_DEV_ID_E823C_SGMII) },
        { PCI_VDEVICE(INTEL, ICE_DEV_ID_E822C_BACKPLANE) },
        { PCI_VDEVICE(INTEL, ICE_DEV_ID_E822C_QSFP) },
        { PCI_VDEVICE(INTEL, ICE_DEV_ID_E822C_SFP) },
        { PCI_VDEVICE(INTEL, ICE_DEV_ID_E822C_10G_BASE_T) },
        { PCI_VDEVICE(INTEL, ICE_DEV_ID_E822C_SGMII) },
        { PCI_VDEVICE(INTEL, ICE_DEV_ID_E822L_BACKPLANE) },
        { PCI_VDEVICE(INTEL, ICE_DEV_ID_E822L_SFP) },
        { PCI_VDEVICE(INTEL, ICE_DEV_ID_E822L_10G_BASE_T) },
        { PCI_VDEVICE(INTEL, ICE_DEV_ID_E822L_SGMII) },
        { PCI_VDEVICE(INTEL, ICE_DEV_ID_E823L_BACKPLANE) },
        { PCI_VDEVICE(INTEL, ICE_DEV_ID_E823L_SFP) },
        { PCI_VDEVICE(INTEL, ICE_DEV_ID_E823L_10G_BASE_T) },
        { PCI_VDEVICE(INTEL, ICE_DEV_ID_E823L_1GBE) },
        { PCI_VDEVICE(INTEL, ICE_DEV_ID_E823L_QSFP) },
        { PCI_VDEVICE(INTEL, ICE_DEV_ID_E822_SI_DFLT) },
        { PCI_VDEVICE(INTEL, ICE_DEV_ID_E825C_BACKPLANE), },
        { PCI_VDEVICE(INTEL, ICE_DEV_ID_E825C_QSFP), },
        { PCI_VDEVICE(INTEL, ICE_DEV_ID_E825C_SFP), },
        { PCI_VDEVICE(INTEL, ICE_DEV_ID_E825C_SGMII), },
        { PCI_VDEVICE(INTEL, ICE_DEV_ID_E830CC_BACKPLANE) },
        { PCI_VDEVICE(INTEL, ICE_DEV_ID_E830CC_QSFP56) },
        { PCI_VDEVICE(INTEL, ICE_DEV_ID_E830CC_SFP) },
        { PCI_VDEVICE(INTEL, ICE_DEV_ID_E830CC_SFP_DD) },
        { PCI_VDEVICE(INTEL, ICE_DEV_ID_E830C_BACKPLANE), },
        { PCI_VDEVICE(INTEL, ICE_DEV_ID_E830_XXV_BACKPLANE), },
        { PCI_VDEVICE(INTEL, ICE_DEV_ID_E830C_QSFP), },
        { PCI_VDEVICE(INTEL, ICE_DEV_ID_E830_XXV_QSFP), },
        { PCI_VDEVICE(INTEL, ICE_DEV_ID_E830C_SFP), },
        { PCI_VDEVICE(INTEL, ICE_DEV_ID_E830_XXV_SFP), },
        /* required last entry */
        {}
};
MODULE_DEVICE_TABLE(pci, ice_pci_tbl);

static DEFINE_SIMPLE_DEV_PM_OPS(ice_pm_ops, ice_suspend, ice_resume);

static const struct pci_error_handlers ice_pci_err_handler = {
        .error_detected = ice_pci_err_detected,
        .slot_reset = ice_pci_err_slot_reset,
        .reset_prepare = ice_pci_err_reset_prepare,
        .reset_done = ice_pci_err_reset_done,
        .resume = ice_pci_err_resume
};

static struct pci_driver ice_driver = {
        .name = KBUILD_MODNAME,
        .id_table = ice_pci_tbl,
        .probe = ice_probe,
        .remove = ice_remove,
        .driver.pm = pm_sleep_ptr(&ice_pm_ops),
        .shutdown = ice_shutdown,
        .sriov_configure = ice_sriov_configure,
        .sriov_get_vf_total_msix = ice_sriov_get_vf_total_msix,
        .sriov_set_msix_vec_count = ice_sriov_set_msix_vec_count,
        .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 = -ENOMEM;

        pr_info("%s\n", ice_driver_string);
        pr_info("%s\n", ice_copyright);

        ice_adv_lnk_speed_maps_init();

        ice_wq = alloc_workqueue("%s", WQ_UNBOUND, 0, KBUILD_MODNAME);
        if (!ice_wq) {
                pr_err("Failed to create workqueue\n");
                return status;
        }

        ice_lag_wq = alloc_ordered_workqueue("ice_lag_wq", 0);
        if (!ice_lag_wq) {
                pr_err("Failed to create LAG workqueue\n");
                goto err_dest_wq;
        }

        ice_debugfs_init();

        status = pci_register_driver(&ice_driver);
        if (status) {
                pr_err("failed to register PCI driver, err %d\n", status);
                goto err_dest_lag_wq;
        }

        status = ice_sf_driver_register();
        if (status) {
                pr_err("Failed to register SF driver, err %d\n", status);
                goto err_sf_driver;
        }

        return 0;

err_sf_driver:
        pci_unregister_driver(&ice_driver);
err_dest_lag_wq:
        destroy_workqueue(ice_lag_wq);
        ice_debugfs_exit();
err_dest_wq:
        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)
{
        ice_sf_driver_unregister();
        pci_unregister_driver(&ice_driver);
        ice_debugfs_exit();
        destroy_workqueue(ice_wq);
        destroy_workqueue(ice_lag_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;
        u8 old_mac[ETH_ALEN];
        u8 flags = 0;
        u8 *mac;
        int err;

        mac = (u8 *)addr->sa_data;

        if (!is_valid_ether_addr(mac))
                return -EADDRNOTAVAIL;

        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;
        }

        if (ice_chnl_dmac_fltr_cnt(pf)) {
                netdev_err(netdev, "can't set mac %pM. Device has tc-flower filters, delete all of them and try again\n",
                           mac);
                return -EAGAIN;
        }

        netif_addr_lock_bh(netdev);
        ether_addr_copy(old_mac, netdev->dev_addr);
        /* change the netdev's MAC address */
        eth_hw_addr_set(netdev, mac);
        netif_addr_unlock_bh(netdev);

        /* Clean up old MAC filter. Not an error if old filter doesn't exist */
        err = ice_fltr_remove_mac(vsi, old_mac, ICE_FWD_TO_VSI);
        if (err && err != -ENOENT) {
                err = -EADDRNOTAVAIL;
                goto err_update_filters;
        }

        /* Add filter for new MAC. If filter exists, return success */
        err = ice_fltr_add_mac(vsi, mac, ICE_FWD_TO_VSI);
        if (err == -EEXIST) {
                /* Although this MAC filter is already present in hardware it's
                 * possible in some cases (e.g. bonding) that dev_addr was
                 * modified outside of the driver and needs to be restored back
                 * to this value.
                 */
                netdev_dbg(netdev, "filter for MAC %pM already exists\n", mac);

                return 0;
        } else if (err) {
                /* error if the new filter addition failed */
                err = -EADDRNOTAVAIL;
        }

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

        netdev_dbg(vsi->netdev, "updated MAC address to %pM\n",
                   netdev->dev_addr);

        /* write new MAC address to the firmware */
        flags = ICE_AQC_MAN_MAC_UPDATE_LAA_WOL;
        err = ice_aq_manage_mac_write(hw, mac, flags, NULL);
        if (err) {
                netdev_err(netdev, "can't set MAC %pM. write to firmware failed error %d\n",
                           mac, err);
        }
        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 || ice_is_switchdev_running(vsi->back))
                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_UMAC_FLTR_CHANGED, vsi->state);
        set_bit(ICE_VSI_MMAC_FLTR_CHANGED, vsi->state);
        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;
        u16 q_handle;
        int status;
        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);

        vsi = ice_locate_vsi_using_queue(vsi, queue_index);
        if (!vsi) {
                netdev_err(netdev, "Invalid VSI for given queue %d\n",
                           queue_index);
                return -EINVAL;
        }

        /* 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 status;
}

/**
 * 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
 * @notified: whether notification was emitted
 * @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, bool *notified,
            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
 * @notified: whether notification was emitted
 * @extack: netlink extended ack
 */
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, bool *notified,
            struct netlink_ext_ack *extack)
{
        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;
}

#define NETIF_VLAN_OFFLOAD_FEATURES     (NETIF_F_HW_VLAN_CTAG_RX | \
                                         NETIF_F_HW_VLAN_CTAG_TX | \
                                         NETIF_F_HW_VLAN_STAG_RX | \
                                         NETIF_F_HW_VLAN_STAG_TX)

#define NETIF_VLAN_STRIPPING_FEATURES   (NETIF_F_HW_VLAN_CTAG_RX | \
                                         NETIF_F_HW_VLAN_STAG_RX)

#define NETIF_VLAN_FILTERING_FEATURES   (NETIF_F_HW_VLAN_CTAG_FILTER | \
                                         NETIF_F_HW_VLAN_STAG_FILTER)

/**
 * ice_fix_features - fix the netdev features flags based on device limitations
 * @netdev: ptr to the netdev that flags are being fixed on
 * @features: features that need to be checked and possibly fixed
 *
 * Make sure any fixups are made to features in this callback. This enables the
 * driver to not have to check unsupported configurations throughout the driver
 * because that's the responsiblity of this callback.
 *
 * Single VLAN Mode (SVM) Supported Features:
 *      NETIF_F_HW_VLAN_CTAG_FILTER
 *      NETIF_F_HW_VLAN_CTAG_RX
 *      NETIF_F_HW_VLAN_CTAG_TX
 *
 * Double VLAN Mode (DVM) Supported Features:
 *      NETIF_F_HW_VLAN_CTAG_FILTER
 *      NETIF_F_HW_VLAN_CTAG_RX
 *      NETIF_F_HW_VLAN_CTAG_TX
 *
 *      NETIF_F_HW_VLAN_STAG_FILTER
 *      NETIF_HW_VLAN_STAG_RX
 *      NETIF_HW_VLAN_STAG_TX
 *
 * Features that need fixing:
 *      Cannot simultaneously enable CTAG and STAG stripping and/or insertion.
 *      These are mutually exlusive as the VSI context cannot support multiple
 *      VLAN ethertypes simultaneously for stripping and/or insertion. If this
 *      is not done, then default to clearing the requested STAG offload
 *      settings.
 *
 *      All supported filtering has to be enabled or disabled together. For
 *      example, in DVM, CTAG and STAG filtering have to be enabled and disabled
 *      together. If this is not done, then default to VLAN filtering disabled.
 *      These are mutually exclusive as there is currently no way to
 *      enable/disable VLAN filtering based on VLAN ethertype when using VLAN
 *      prune rules.
 */
static netdev_features_t
ice_fix_features(struct net_device *netdev, netdev_features_t features)
{
        struct ice_netdev_priv *np = netdev_priv(netdev);
        netdev_features_t req_vlan_fltr, cur_vlan_fltr;
        bool cur_ctag, cur_stag, req_ctag, req_stag;

        cur_vlan_fltr = netdev->features & NETIF_VLAN_FILTERING_FEATURES;
        cur_ctag = cur_vlan_fltr & NETIF_F_HW_VLAN_CTAG_FILTER;
        cur_stag = cur_vlan_fltr & NETIF_F_HW_VLAN_STAG_FILTER;

        req_vlan_fltr = features & NETIF_VLAN_FILTERING_FEATURES;
        req_ctag = req_vlan_fltr & NETIF_F_HW_VLAN_CTAG_FILTER;
        req_stag = req_vlan_fltr & NETIF_F_HW_VLAN_STAG_FILTER;

        if (req_vlan_fltr != cur_vlan_fltr) {
                if (ice_is_dvm_ena(&np->vsi->back->hw)) {
                        if (req_ctag && req_stag) {
                                features |= NETIF_VLAN_FILTERING_FEATURES;
                        } else if (!req_ctag && !req_stag) {
                                features &= ~NETIF_VLAN_FILTERING_FEATURES;
                        } else if ((!cur_ctag && req_ctag && !cur_stag) ||
                                   (!cur_stag && req_stag && !cur_ctag)) {
                                features |= NETIF_VLAN_FILTERING_FEATURES;
                                netdev_warn(netdev,  "802.1Q and 802.1ad VLAN filtering must be either both on or both off. VLAN filtering has been enabled for both types.\n");
                        } else if ((cur_ctag && !req_ctag && cur_stag) ||
                                   (cur_stag && !req_stag && cur_ctag)) {
                                features &= ~NETIF_VLAN_FILTERING_FEATURES;
                                netdev_warn(netdev,  "802.1Q and 802.1ad VLAN filtering must be either both on or both off. VLAN filtering has been disabled for both types.\n");
                        }
                } else {
                        if (req_vlan_fltr & NETIF_F_HW_VLAN_STAG_FILTER)
                                netdev_warn(netdev, "cannot support requested 802.1ad filtering setting in SVM mode\n");

                        if (req_vlan_fltr & NETIF_F_HW_VLAN_CTAG_FILTER)
                                features |= NETIF_F_HW_VLAN_CTAG_FILTER;
                }
        }

        if ((features & (NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX)) &&
            (features & (NETIF_F_HW_VLAN_STAG_RX | NETIF_F_HW_VLAN_STAG_TX))) {
                netdev_warn(netdev, "cannot support CTAG and STAG VLAN stripping and/or insertion simultaneously since CTAG and STAG offloads are mutually exclusive, clearing STAG offload settings\n");
                features &= ~(NETIF_F_HW_VLAN_STAG_RX |
                              NETIF_F_HW_VLAN_STAG_TX);
        }

        if (!(netdev->features & NETIF_F_RXFCS) &&
            (features & NETIF_F_RXFCS) &&
            (features & NETIF_VLAN_STRIPPING_FEATURES) &&
            !ice_vsi_has_non_zero_vlans(np->vsi)) {
                netdev_warn(netdev, "Disabling VLAN stripping as FCS/CRC stripping is also disabled and there is no VLAN configured\n");
                features &= ~NETIF_VLAN_STRIPPING_FEATURES;
        }

        return features;
}

/**
 * ice_set_rx_rings_vlan_proto - update rings with new stripped VLAN proto
 * @vsi: PF's VSI
 * @vlan_ethertype: VLAN ethertype (802.1Q or 802.1ad) in network byte order
 *
 * Store current stripped VLAN proto in ring packet context,
 * so it can be accessed more efficiently by packet processing code.
 */
static void
ice_set_rx_rings_vlan_proto(struct ice_vsi *vsi, __be16 vlan_ethertype)
{
        u16 i;

        ice_for_each_alloc_rxq(vsi, i)
                vsi->rx_rings[i]->pkt_ctx.vlan_proto = vlan_ethertype;
}

/**
 * ice_set_vlan_offload_features - set VLAN offload features for the PF VSI
 * @vsi: PF's VSI
 * @features: features used to determine VLAN offload settings
 *
 * First, determine the vlan_ethertype based on the VLAN offload bits in
 * features. Then determine if stripping and insertion should be enabled or
 * disabled. Finally enable or disable VLAN stripping and insertion.
 */
static int
ice_set_vlan_offload_features(struct ice_vsi *vsi, netdev_features_t features)
{
        bool enable_stripping = true, enable_insertion = true;
        struct ice_vsi_vlan_ops *vlan_ops;
        int strip_err = 0, insert_err = 0;
        u16 vlan_ethertype = 0;

        vlan_ops = ice_get_compat_vsi_vlan_ops(vsi);

        if (features & (NETIF_F_HW_VLAN_STAG_RX | NETIF_F_HW_VLAN_STAG_TX))
                vlan_ethertype = ETH_P_8021AD;
        else if (features & (NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX))
                vlan_ethertype = ETH_P_8021Q;

        if (!(features & (NETIF_F_HW_VLAN_STAG_RX | NETIF_F_HW_VLAN_CTAG_RX)))
                enable_stripping = false;
        if (!(features & (NETIF_F_HW_VLAN_STAG_TX | NETIF_F_HW_VLAN_CTAG_TX)))
                enable_insertion = false;

        if (enable_stripping)
                strip_err = vlan_ops->ena_stripping(vsi, vlan_ethertype);
        else
                strip_err = vlan_ops->dis_stripping(vsi);

        if (enable_insertion)
                insert_err = vlan_ops->ena_insertion(vsi, vlan_ethertype);
        else
                insert_err = vlan_ops->dis_insertion(vsi);

        if (strip_err || insert_err)
                return -EIO;

        ice_set_rx_rings_vlan_proto(vsi, enable_stripping ?
                                    htons(vlan_ethertype) : 0);

        return 0;
}

/**
 * ice_set_vlan_filtering_features - set VLAN filtering features for the PF VSI
 * @vsi: PF's VSI
 * @features: features used to determine VLAN filtering settings
 *
 * Enable or disable Rx VLAN filtering based on the VLAN filtering bits in the
 * features.
 */
static int
ice_set_vlan_filtering_features(struct ice_vsi *vsi, netdev_features_t features)
{
        struct ice_vsi_vlan_ops *vlan_ops = ice_get_compat_vsi_vlan_ops(vsi);
        int err = 0;

        /* support Single VLAN Mode (SVM) and Double VLAN Mode (DVM) by checking
         * if either bit is set. In switchdev mode Rx filtering should never be
         * enabled.
         */
        if ((features &
             (NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_STAG_FILTER)) &&
             !ice_is_eswitch_mode_switchdev(vsi->back))
                err = vlan_ops->ena_rx_filtering(vsi);
        else
                err = vlan_ops->dis_rx_filtering(vsi);

        return err;
}

/**
 * ice_set_vlan_features - set VLAN settings based on suggested feature set
 * @netdev: ptr to the netdev being adjusted
 * @features: the feature set that the stack is suggesting
 *
 * Only update VLAN settings if the requested_vlan_features are different than
 * the current_vlan_features.
 */
static int
ice_set_vlan_features(struct net_device *netdev, netdev_features_t features)
{
        netdev_features_t current_vlan_features, requested_vlan_features;
        struct ice_netdev_priv *np = netdev_priv(netdev);
        struct ice_vsi *vsi = np->vsi;
        int err;

        current_vlan_features = netdev->features & NETIF_VLAN_OFFLOAD_FEATURES;
        requested_vlan_features = features & NETIF_VLAN_OFFLOAD_FEATURES;
        if (current_vlan_features ^ requested_vlan_features) {
                if ((features & NETIF_F_RXFCS) &&
                    (features & NETIF_VLAN_STRIPPING_FEATURES)) {
                        dev_err(ice_pf_to_dev(vsi->back),
                                "To enable VLAN stripping, you must first enable FCS/CRC stripping\n");
                        return -EIO;
                }

                err = ice_set_vlan_offload_features(vsi, features);
                if (err)
                        return err;
        }

        current_vlan_features = netdev->features &
                NETIF_VLAN_FILTERING_FEATURES;
        requested_vlan_features = features & NETIF_VLAN_FILTERING_FEATURES;
        if (current_vlan_features ^ requested_vlan_features) {
                err = ice_set_vlan_filtering_features(vsi, features);
                if (err)
                        return err;
        }

        return 0;
}

/**
 * ice_set_loopback - turn on/off loopback mode on underlying PF
 * @vsi: ptr to VSI
 * @ena: flag to indicate the on/off setting
 */
static int ice_set_loopback(struct ice_vsi *vsi, bool ena)
{
        bool if_running = netif_running(vsi->netdev);
        int ret;

        if (if_running && !test_and_set_bit(ICE_VSI_DOWN, vsi->state)) {
                ret = ice_down(vsi);
                if (ret) {
                        netdev_err(vsi->netdev, "Preparing device to toggle loopback failed\n");
                        return ret;
                }
        }
        ret = ice_aq_set_mac_loopback(&vsi->back->hw, ena, NULL);
        if (ret)
                netdev_err(vsi->netdev, "Failed to toggle loopback state\n");
        if (if_running)
                ret = ice_up(vsi);

        return ret;
}

/**
 * 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)
{
        netdev_features_t changed = netdev->features ^ 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(pf)) {
                dev_err(ice_pf_to_dev(pf),
                        "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(pf),
                        "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 (changed & NETIF_F_RXHASH)
                ice_vsi_manage_rss_lut(vsi, !!(features & NETIF_F_RXHASH));

        ret = ice_set_vlan_features(netdev, features);
        if (ret)
                return ret;

        /* Turn on receive of FCS aka CRC, and after setting this
         * flag the packet data will have the 4 byte CRC appended
         */
        if (changed & NETIF_F_RXFCS) {
                if ((features & NETIF_F_RXFCS) &&
                    (features & NETIF_VLAN_STRIPPING_FEATURES)) {
                        dev_err(ice_pf_to_dev(vsi->back),
                                "To disable FCS/CRC stripping, you must first disable VLAN stripping\n");
                        return -EIO;
                }

                ice_vsi_cfg_crc_strip(vsi, !!(features & NETIF_F_RXFCS));
                ret = ice_down_up(vsi);
                if (ret)
                        return ret;
        }

        if (changed & NETIF_F_NTUPLE) {
                bool ena = !!(features & NETIF_F_NTUPLE);

                ice_vsi_manage_fdir(vsi, ena);
                ena ? ice_init_arfs(vsi) : ice_clear_arfs(vsi);
        }

        /* don't turn off hw_tc_offload when ADQ is already enabled */
        if (!(features & NETIF_F_HW_TC) && ice_is_adq_active(pf)) {
                dev_err(ice_pf_to_dev(pf), "ADQ is active, can't turn hw_tc_offload off\n");
                return -EACCES;
        }

        if (changed & NETIF_F_HW_TC) {
                bool ena = !!(features & NETIF_F_HW_TC);

                assign_bit(ICE_FLAG_CLS_FLOWER, pf->flags, ena);
        }

        if (changed & NETIF_F_LOOPBACK)
                ret = ice_set_loopback(vsi, !!(features & NETIF_F_LOOPBACK));

        return ret;
}

/**
 * ice_vsi_vlan_setup - Setup VLAN offload properties on a PF VSI
 * @vsi: VSI to setup VLAN properties for
 */
static int ice_vsi_vlan_setup(struct ice_vsi *vsi)
{
        int err;

        err = ice_set_vlan_offload_features(vsi, vsi->netdev->features);
        if (err)
                return err;

        err = ice_set_vlan_filtering_features(vsi, vsi->netdev->features);
        if (err)
                return err;

        return ice_vsi_add_vlan_zero(vsi);
}

/**
 * ice_vsi_cfg_lan - Setup the VSI lan related config
 * @vsi: the VSI being configured
 *
 * Return 0 on success and negative value on error
 */
int ice_vsi_cfg_lan(struct ice_vsi *vsi)
{
        int err;

        if (vsi->netdev && vsi->type == ICE_VSI_PF) {
                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;
}

/* THEORY OF MODERATION:
 * The ice driver hardware works differently than the hardware that DIMLIB was
 * originally made for. ice hardware doesn't have packet count limits that
 * can trigger an interrupt, but it *does* have interrupt rate limit support,
 * which is hard-coded to a limit of 250,000 ints/second.
 * If not using dynamic moderation, the INTRL value can be modified
 * by ethtool rx-usecs-high.
 */
struct ice_dim {
        /* the throttle rate for interrupts, basically worst case delay before
         * an initial interrupt fires, value is stored in microseconds.
         */
        u16 itr;
};

/* Make a different profile for Rx that doesn't allow quite so aggressive
 * moderation at the high end (it maxes out at 126us or about 8k interrupts a
 * second.
 */
static const struct ice_dim rx_profile[] = {
        {2},    /* 500,000 ints/s, capped at 250K by INTRL */
        {8},    /* 125,000 ints/s */
        {16},   /*  62,500 ints/s */
        {62},   /*  16,129 ints/s */
        {126}   /*   7,936 ints/s */
};

/* The transmit profile, which has the same sorts of values
 * as the previous struct
 */
static const struct ice_dim tx_profile[] = {
        {2},    /* 500,000 ints/s, capped at 250K by INTRL */
        {8},    /* 125,000 ints/s */
        {40},   /*  16,125 ints/s */
        {128},  /*   7,812 ints/s */
        {256}   /*   3,906 ints/s */
};

static void ice_tx_dim_work(struct work_struct *work)
{
        struct ice_ring_container *rc;
        struct dim *dim;
        u16 itr;

        dim = container_of(work, struct dim, work);
        rc = dim->priv;

        WARN_ON(dim->profile_ix >= ARRAY_SIZE(tx_profile));

        /* look up the values in our local table */
        itr = tx_profile[dim->profile_ix].itr;

        ice_trace(tx_dim_work, container_of(rc, struct ice_q_vector, tx), dim);
        ice_write_itr(rc, itr);

        dim->state = DIM_START_MEASURE;
}

static void ice_rx_dim_work(struct work_struct *work)
{
        struct ice_ring_container *rc;
        struct dim *dim;
        u16 itr;

        dim = container_of(work, struct dim, work);
        rc = dim->priv;

        WARN_ON(dim->profile_ix >= ARRAY_SIZE(rx_profile));

        /* look up the values in our local table */
        itr = rx_profile[dim->profile_ix].itr;

        ice_trace(rx_dim_work, container_of(rc, struct ice_q_vector, rx), dim);
        ice_write_itr(rc, itr);

        dim->state = DIM_START_MEASURE;
}

#define ICE_DIM_DEFAULT_PROFILE_IX 1

/**
 * ice_init_moderation - set up interrupt moderation
 * @q_vector: the vector containing rings to be configured
 *
 * Set up interrupt moderation registers, with the intent to do the right thing
 * when called from reset or from probe, and whether or not dynamic moderation
 * is enabled or not. Take special care to write all the registers in both
 * dynamic moderation mode or not in order to make sure hardware is in a known
 * state.
 */
static void ice_init_moderation(struct ice_q_vector *q_vector)
{
        struct ice_ring_container *rc;
        bool tx_dynamic, rx_dynamic;

        rc = &q_vector->tx;
        INIT_WORK(&rc->dim.work, ice_tx_dim_work);
        rc->dim.mode = DIM_CQ_PERIOD_MODE_START_FROM_EQE;
        rc->dim.profile_ix = ICE_DIM_DEFAULT_PROFILE_IX;
        rc->dim.priv = rc;
        tx_dynamic = ITR_IS_DYNAMIC(rc);

        /* set the initial TX ITR to match the above */
        ice_write_itr(rc, tx_dynamic ?
                      tx_profile[rc->dim.profile_ix].itr : rc->itr_setting);

        rc = &q_vector->rx;
        INIT_WORK(&rc->dim.work, ice_rx_dim_work);
        rc->dim.mode = DIM_CQ_PERIOD_MODE_START_FROM_EQE;
        rc->dim.profile_ix = ICE_DIM_DEFAULT_PROFILE_IX;
        rc->dim.priv = rc;
        rx_dynamic = ITR_IS_DYNAMIC(rc);

        /* set the initial RX ITR to match the above */
        ice_write_itr(rc, rx_dynamic ? rx_profile[rc->dim.profile_ix].itr :
                                       rc->itr_setting);

        ice_set_q_vector_intrl(q_vector);
}

/**
 * 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];

                ice_init_moderation(q_vector);

                if (q_vector->rx.rx_ring || q_vector->tx.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_VSI_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 && (vsi->type == ICE_VSI_PF ||
                              vsi->type == ICE_VSI_SF)))) {
                ice_print_link_msg(vsi, true);
                netif_tx_start_all_queues(vsi->netdev);
                netif_carrier_on(vsi->netdev);
                ice_ptp_link_change(pf, pf->hw.pf_id, true);
        }

        /* Perform an initial read of the statistics registers now to
         * set the baseline so counters are ready when interface is up
         */
        ice_update_eth_stats(vsi);

        if (vsi->type == ICE_VSI_PF)
                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_lan(vsi);
        if (!err)
                err = ice_up_complete(vsi);

        return err;
}

/**
 * ice_fetch_u64_stats_per_ring - get packets and bytes stats per ring
 * @syncp: pointer to u64_stats_sync
 * @stats: stats that pkts and bytes count will be taken 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.
 */
void
ice_fetch_u64_stats_per_ring(struct u64_stats_sync *syncp,
                             struct ice_q_stats stats, u64 *pkts, u64 *bytes)
{
        unsigned int start;

        do {
                start = u64_stats_fetch_begin(syncp);
                *pkts = stats.pkts;
                *bytes = stats.bytes;
        } while (u64_stats_fetch_retry(syncp, start));
}

/**
 * ice_update_vsi_tx_ring_stats - Update VSI Tx ring stats counters
 * @vsi: the VSI to be updated
 * @vsi_stats: the stats struct to be updated
 * @rings: rings to work on
 * @count: number of rings
 */
static void
ice_update_vsi_tx_ring_stats(struct ice_vsi *vsi,
                             struct rtnl_link_stats64 *vsi_stats,
                             struct ice_tx_ring **rings, u16 count)
{
        u16 i;

        for (i = 0; i < count; i++) {
                struct ice_tx_ring *ring;
                u64 pkts = 0, bytes = 0;

                ring = READ_ONCE(rings[i]);
                if (!ring || !ring->ring_stats)
                        continue;
                ice_fetch_u64_stats_per_ring(&ring->ring_stats->syncp,
                                             ring->ring_stats->stats, &pkts,
                                             &bytes);
                vsi_stats->tx_packets += pkts;
                vsi_stats->tx_bytes += bytes;
                vsi->tx_restart += ring->ring_stats->tx_stats.restart_q;
                vsi->tx_busy += ring->ring_stats->tx_stats.tx_busy;
                vsi->tx_linearize += ring->ring_stats->tx_stats.tx_linearize;
        }
}

/**
 * ice_update_vsi_ring_stats - Update VSI stats counters
 * @vsi: the VSI to be updated
 */
static void ice_update_vsi_ring_stats(struct ice_vsi *vsi)
{
        struct rtnl_link_stats64 *net_stats, *stats_prev;
        struct rtnl_link_stats64 *vsi_stats;
        struct ice_pf *pf = vsi->back;
        u64 pkts, bytes;
        int i;

        vsi_stats = kzalloc(sizeof(*vsi_stats), GFP_ATOMIC);
        if (!vsi_stats)
                return;

        /* 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_update_vsi_tx_ring_stats(vsi, vsi_stats, vsi->tx_rings,
                                     vsi->num_txq);

        /* update Rx rings counters */
        ice_for_each_rxq(vsi, i) {
                struct ice_rx_ring *ring = READ_ONCE(vsi->rx_rings[i]);
                struct ice_ring_stats *ring_stats;

                ring_stats = ring->ring_stats;
                ice_fetch_u64_stats_per_ring(&ring_stats->syncp,
                                             ring_stats->stats, &pkts,
                                             &bytes);
                vsi_stats->rx_packets += pkts;
                vsi_stats->rx_bytes += bytes;
                vsi->rx_buf_failed += ring_stats->rx_stats.alloc_buf_failed;
                vsi->rx_page_failed += ring_stats->rx_stats.alloc_page_failed;
        }

        /* update XDP Tx rings counters */
        if (ice_is_xdp_ena_vsi(vsi))
                ice_update_vsi_tx_ring_stats(vsi, vsi_stats, vsi->xdp_rings,
                                             vsi->num_xdp_txq);

        rcu_read_unlock();

        net_stats = &vsi->net_stats;
        stats_prev = &vsi->net_stats_prev;

        /* Update netdev counters, but keep in mind that values could start at
         * random value after PF reset. And as we increase the reported stat by
         * diff of Prev-Cur, we need to be sure that Prev is valid. If it's not,
         * let's skip this round.
         */
        if (likely(pf->stat_prev_loaded)) {
                net_stats->tx_packets += vsi_stats->tx_packets - stats_prev->tx_packets;
                net_stats->tx_bytes += vsi_stats->tx_bytes - stats_prev->tx_bytes;
                net_stats->rx_packets += vsi_stats->rx_packets - stats_prev->rx_packets;
                net_stats->rx_bytes += vsi_stats->rx_bytes - stats_prev->rx_bytes;
        }

        stats_prev->tx_packets = vsi_stats->tx_packets;
        stats_prev->tx_bytes = vsi_stats->tx_bytes;
        stats_prev->rx_packets = vsi_stats->rx_packets;
        stats_prev->rx_bytes = vsi_stats->rx_bytes;

        kfree(vsi_stats);
}

/**
 * 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_VSI_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 +
                                    pf->stats.rx_undersize +
                                    pf->hw_csum_rx_error +
                                    pf->stats.rx_jabber +
                                    pf->stats.rx_fragments +
                                    pf->stats.rx_oversize;
                /* record drops from the port level */
                cur_ns->rx_missed_errors = pf->stats.eth.rx_discards;
        }
}

/**
 * ice_update_pf_stats - Update PF port stats counters
 * @pf: PF whose stats needs to be updated
 */
void ice_update_pf_stats(struct ice_pf *pf)
{
        struct ice_hw_port_stats *prev_ps, *cur_ps;
        struct ice_hw *hw = &pf->hw;
        u16 fd_ctr_base;
        u8 port;

        port = hw->port_info->lport;
        prev_ps = &pf->stats_prev;
        cur_ps = &pf->stats;

        if (ice_is_reset_in_progress(pf->state))
                pf->stat_prev_loaded = false;

        ice_stat_update40(hw, GLPRT_GORCL(port), pf->stat_prev_loaded,
                          &prev_ps->eth.rx_bytes,
                          &cur_ps->eth.rx_bytes);

        ice_stat_update40(hw, GLPRT_UPRCL(port), pf->stat_prev_loaded,
                          &prev_ps->eth.rx_unicast,
                          &cur_ps->eth.rx_unicast);

        ice_stat_update40(hw, GLPRT_MPRCL(port), pf->stat_prev_loaded,
                          &prev_ps->eth.rx_multicast,
                          &cur_ps->eth.rx_multicast);

        ice_stat_update40(hw, GLPRT_BPRCL(port), pf->stat_prev_loaded,
                          &prev_ps->eth.rx_broadcast,
                          &cur_ps->eth.rx_broadcast);

        ice_stat_update32(hw, PRTRPB_RDPC, pf->stat_prev_loaded,
                          &prev_ps->eth.rx_discards,
                          &cur_ps->eth.rx_discards);

        ice_stat_update40(hw, GLPRT_GOTCL(port), pf->stat_prev_loaded,
                          &prev_ps->eth.tx_bytes,
                          &cur_ps->eth.tx_bytes);

        ice_stat_update40(hw, GLPRT_UPTCL(port), pf->stat_prev_loaded,
                          &prev_ps->eth.tx_unicast,
                          &cur_ps->eth.tx_unicast);

        ice_stat_update40(hw, GLPRT_MPTCL(port), pf->stat_prev_loaded,
                          &prev_ps->eth.tx_multicast,
                          &cur_ps->eth.tx_multicast);

        ice_stat_update40(hw, GLPRT_BPTCL(port), pf->stat_prev_loaded,
                          &prev_ps->eth.tx_broadcast,
                          &cur_ps->eth.tx_broadcast);

        ice_stat_update32(hw, GLPRT_TDOLD(port), pf->stat_prev_loaded,
                          &prev_ps->tx_dropped_link_down,
                          &cur_ps->tx_dropped_link_down);

        ice_stat_update40(hw, GLPRT_PRC64L(port), pf->stat_prev_loaded,
                          &prev_ps->rx_size_64, &cur_ps->rx_size_64);

        ice_stat_update40(hw, GLPRT_PRC127L(port), pf->stat_prev_loaded,
                          &prev_ps->rx_size_127, &cur_ps->rx_size_127);

        ice_stat_update40(hw, GLPRT_PRC255L(port), pf->stat_prev_loaded,
                          &prev_ps->rx_size_255, &cur_ps->rx_size_255);

        ice_stat_update40(hw, GLPRT_PRC511L(port), pf->stat_prev_loaded,
                          &prev_ps->rx_size_511, &cur_ps->rx_size_511);

        ice_stat_update40(hw, GLPRT_PRC1023L(port), pf->stat_prev_loaded,
                          &prev_ps->rx_size_1023, &cur_ps->rx_size_1023);

        ice_stat_update40(hw, GLPRT_PRC1522L(port), pf->stat_prev_loaded,
                          &prev_ps->rx_size_1522, &cur_ps->rx_size_1522);

        ice_stat_update40(hw, GLPRT_PRC9522L(port), pf->stat_prev_loaded,
                          &prev_ps->rx_size_big, &cur_ps->rx_size_big);

        ice_stat_update40(hw, GLPRT_PTC64L(port), pf->stat_prev_loaded,
                          &prev_ps->tx_size_64, &cur_ps->tx_size_64);

        ice_stat_update40(hw, GLPRT_PTC127L(port), pf->stat_prev_loaded,
                          &prev_ps->tx_size_127, &cur_ps->tx_size_127);

        ice_stat_update40(hw, GLPRT_PTC255L(port), pf->stat_prev_loaded,
                          &prev_ps->tx_size_255, &cur_ps->tx_size_255);

        ice_stat_update40(hw, GLPRT_PTC511L(port), pf->stat_prev_loaded,
                          &prev_ps->tx_size_511, &cur_ps->tx_size_511);

        ice_stat_update40(hw, GLPRT_PTC1023L(port), pf->stat_prev_loaded,
                          &prev_ps->tx_size_1023, &cur_ps->tx_size_1023);

        ice_stat_update40(hw, GLPRT_PTC1522L(port), pf->stat_prev_loaded,
                          &prev_ps->tx_size_1522, &cur_ps->tx_size_1522);

        ice_stat_update40(hw, GLPRT_PTC9522L(port), pf->stat_prev_loaded,
                          &prev_ps->tx_size_big, &cur_ps->tx_size_big);

        fd_ctr_base = hw->fd_ctr_base;

        ice_stat_update40(hw,
                          GLSTAT_FD_CNT0L(ICE_FD_SB_STAT_IDX(fd_ctr_base)),
                          pf->stat_prev_loaded, &prev_ps->fd_sb_match,
                          &cur_ps->fd_sb_match);
        ice_stat_update32(hw, GLPRT_LXONRXC(port), pf->stat_prev_loaded,
                          &prev_ps->link_xon_rx, &cur_ps->link_xon_rx);

        ice_stat_update32(hw, GLPRT_LXOFFRXC(port), pf->stat_prev_loaded,
                          &prev_ps->link_xoff_rx, &cur_ps->link_xoff_rx);

        ice_stat_update32(hw, GLPRT_LXONTXC(port), pf->stat_prev_loaded,
                          &prev_ps->link_xon_tx, &cur_ps->link_xon_tx);

        ice_stat_update32(hw, GLPRT_LXOFFTXC(port), pf->stat_prev_loaded,
                          &prev_ps->link_xoff_tx, &cur_ps->link_xoff_tx);

        ice_update_dcb_stats(pf);

        ice_stat_update32(hw, GLPRT_CRCERRS(port), pf->stat_prev_loaded,
                          &prev_ps->crc_errors, &cur_ps->crc_errors);

        ice_stat_update32(hw, GLPRT_ILLERRC(port), pf->stat_prev_loaded,
                          &prev_ps->illegal_bytes, &cur_ps->illegal_bytes);

        ice_stat_update32(hw, GLPRT_MLFC(port), pf->stat_prev_loaded,
                          &prev_ps->mac_local_faults,
                          &cur_ps->mac_local_faults);

        ice_stat_update32(hw, GLPRT_MRFC(port), pf->stat_prev_loaded,
                          &prev_ps->mac_remote_faults,
                          &cur_ps->mac_remote_faults);

        ice_stat_update32(hw, GLPRT_RUC(port), pf->stat_prev_loaded,
                          &prev_ps->rx_undersize, &cur_ps->rx_undersize);

        ice_stat_update32(hw, GLPRT_RFC(port), pf->stat_prev_loaded,
                          &prev_ps->rx_fragments, &cur_ps->rx_fragments);

        ice_stat_update32(hw, GLPRT_ROC(port), pf->stat_prev_loaded,
                          &prev_ps->rx_oversize, &cur_ps->rx_oversize);

        ice_stat_update32(hw, GLPRT_RJC(port), pf->stat_prev_loaded,
                          &prev_ps->rx_jabber, &cur_ps->rx_jabber);

        cur_ps->fd_sb_status = test_bit(ICE_FLAG_FD_ENA, pf->flags) ? 1 : 0;

        pf->stat_prev_loaded = true;
}

/**
 * ice_get_stats64 - get statistics for network device structure
 * @netdev: network interface device structure
 * @stats: main device statistics structure
 */
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_VSI_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.rx_ring || q_vector->tx.tx_ring)
                        napi_disable(&q_vector->napi);

                cancel_work_sync(&q_vector->tx.dim.work);
                cancel_work_sync(&q_vector->rx.dim.work);
        }
}

/**
 * ice_vsi_dis_irq - Mask off queue interrupt generation on the VSI
 * @vsi: the VSI being un-configured
 */
static void ice_vsi_dis_irq(struct ice_vsi *vsi)
{
        struct ice_pf *pf = vsi->back;
        struct ice_hw *hw = &pf->hw;
        u32 val;
        int i;

        /* disable interrupt causation from each Rx queue; Tx queues are
         * handled in ice_vsi_stop_tx_ring()
         */
        if (vsi->rx_rings) {
                ice_for_each_rxq(vsi, i) {
                        if (vsi->rx_rings[i]) {
                                u16 reg;

                                reg = vsi->rx_rings[i]->reg_idx;
                                val = rd32(hw, QINT_RQCTL(reg));
                                val &= ~QINT_RQCTL_CAUSE_ENA_M;
                                wr32(hw, QINT_RQCTL(reg), val);
                        }
                }
        }

        /* disable each interrupt */
        ice_for_each_q_vector(vsi, i) {
                if (!vsi->q_vectors[i])
                        continue;
                wr32(hw, GLINT_DYN_CTL(vsi->q_vectors[i]->reg_idx), 0);
        }

        ice_flush(hw);

        /* don't call synchronize_irq() for VF's from the host */
        if (vsi->type == ICE_VSI_VF)
                return;

        ice_for_each_q_vector(vsi, i)
                synchronize_irq(vsi->q_vectors[i]->irq.virq);
}

/**
 * ice_down - Shutdown the connection
 * @vsi: The VSI being stopped
 *
 * Caller of this function is expected to set the vsi->state ICE_DOWN bit
 */
int ice_down(struct ice_vsi *vsi)
{
        int i, tx_err, rx_err, vlan_err = 0;

        WARN_ON(!test_bit(ICE_VSI_DOWN, vsi->state));

        if (vsi->netdev) {
                vlan_err = ice_vsi_del_vlan_zero(vsi);
                ice_ptp_link_change(vsi->back, vsi->back->hw.pf_id, false);
                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 && vsi->xdp_rings) {
                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);

        ice_for_each_txq(vsi, i)
                ice_clean_tx_ring(vsi->tx_rings[i]);

        if (vsi->xdp_rings)
                ice_for_each_xdp_txq(vsi, i)
                        ice_clean_tx_ring(vsi->xdp_rings[i]);

        ice_for_each_rxq(vsi, i)
                ice_clean_rx_ring(vsi->rx_rings[i]);

        if (tx_err || rx_err || vlan_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_down_up - shutdown the VSI connection and bring it up
 * @vsi: the VSI to be reconnected
 */
int ice_down_up(struct ice_vsi *vsi)
{
        int ret;

        /* if DOWN already set, nothing to do */
        if (test_and_set_bit(ICE_VSI_DOWN, vsi->state))
                return 0;

        ret = ice_down(vsi);
        if (ret)
                return ret;

        ret = ice_up(vsi);
        if (ret) {
                netdev_err(vsi->netdev, "reallocating resources failed during netdev features change, may need to reload driver\n");
                return ret;
        }

        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_tx_ring *ring = vsi->tx_rings[i];

                if (!ring)
                        return -EINVAL;

                if (vsi->netdev)
                        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_rx_ring *ring = vsi->rx_rings[i];

                if (!ring)
                        return -EINVAL;

                if (vsi->netdev)
                        ring->netdev = vsi->netdev;
                err = ice_setup_rx_ring(ring);
                if (err)
                        break;
        }

        return err;
}

/**
 * ice_vsi_open_ctrl - open control VSI for use
 * @vsi: the VSI to open
 *
 * Initialization of the Control VSI
 *
 * Returns 0 on success, negative value on error
 */
int ice_vsi_open_ctrl(struct ice_vsi *vsi)
{
        char int_name[ICE_INT_NAME_STR_LEN];
        struct ice_pf *pf = vsi->back;
        struct device *dev;
        int err;

        dev = ice_pf_to_dev(pf);
        /* allocate descriptors */
        err = ice_vsi_setup_tx_rings(vsi);
        if (err)
                goto err_setup_tx;

        err = ice_vsi_setup_rx_rings(vsi);
        if (err)
                goto err_setup_rx;

        err = ice_vsi_cfg_lan(vsi);
        if (err)
                goto err_setup_rx;

        snprintf(int_name, sizeof(int_name) - 1, "%s-%s:ctrl",
                 dev_driver_string(dev), dev_name(dev));
        err = ice_vsi_req_irq_msix(vsi, int_name);
        if (err)
                goto err_setup_rx;

        ice_vsi_cfg_msix(vsi);

        err = ice_vsi_start_all_rx_rings(vsi);
        if (err)
                goto err_up_complete;

        clear_bit(ICE_VSI_DOWN, vsi->state);
        ice_vsi_ena_irq(vsi);

        return 0;

err_up_complete:
        ice_down(vsi);
err_setup_rx:
        ice_vsi_free_rx_rings(vsi);
err_setup_tx:
        ice_vsi_free_tx_rings(vsi);

        return err;
}

/**
 * ice_vsi_open - Called when a network interface is made active
 * @vsi: the VSI to open
 *
 * Initialization of the VSI
 *
 * Returns 0 on success, negative value on error
 */
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_lan(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;

        ice_vsi_cfg_netdev_tc(vsi, vsi->tc_cfg.ena_tc);

        if (vsi->type == ICE_VSI_PF || vsi->type == ICE_VSI_SF) {
                /* 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;

                ice_vsi_set_napi_queues(vsi);
        }

        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;

                if (pf->vsi[i]->type == ICE_VSI_CHNL)
                        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);
        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, ICE_VSI_FLAG_INIT);
                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 */
                err = ice_replay_vsi(&pf->hw, vsi->idx);
                if (err) {
                        dev_err(dev, "replay VSI failed, error %d, VSI index %d, type %s\n",
                                err, vsi->idx, ice_vsi_type_str(type));
                        return err;
                }

                /* Re-map HW VSI number, using VSI handle that has been
                 * previously validated in ice_replay_vsi() call above
                 */
                vsi->vsi_num = ice_get_hw_vsi_num(&pf->hw, vsi->idx);

                /* enable the VSI */
                err = ice_ena_vsi(vsi, false);
                if (err) {
                        dev_err(dev, "enable VSI failed, err %d, VSI index %d, type %s\n",
                                err, vsi->idx, ice_vsi_type_str(type));
                        return err;
                }

                dev_info(dev, "VSI rebuilt. VSI index %d, type %s\n", vsi->idx,
                         ice_vsi_type_str(type));
        }

        return 0;
}

/**
 * ice_update_pf_netdev_link - Update PF netdev link status
 * @pf: pointer to the PF instance
 */
static void ice_update_pf_netdev_link(struct ice_pf *pf)
{
        bool link_up;
        int i;

        ice_for_each_vsi(pf, i) {
                struct ice_vsi *vsi = pf->vsi[i];

                if (!vsi || vsi->type != ICE_VSI_PF)
                        return;

                ice_get_link_status(pf->vsi[i]->port_info, &link_up);
                if (link_up) {
                        netif_carrier_on(pf->vsi[i]->netdev);
                        netif_tx_wake_all_queues(pf->vsi[i]->netdev);
                } else {
                        netif_carrier_off(pf->vsi[i]->netdev);
                        netif_tx_stop_all_queues(pf->vsi[i]->netdev);
                }
        }
}

/**
 * ice_rebuild - rebuild after reset
 * @pf: PF to rebuild
 * @reset_type: type of reset
 *
 * Do not rebuild VF VSI in this flow because that is already handled via
 * ice_reset_all_vfs(). This is because requirements for resetting a VF after a
 * PFR/CORER/GLOBER/etc. are different than the normal flow. Also, we don't want
 * to reset/rebuild all the VF VSI twice.
 */
static void ice_rebuild(struct ice_pf *pf, enum ice_reset_req reset_type)
{
        struct ice_vsi *vsi = ice_get_main_vsi(pf);
        struct device *dev = ice_pf_to_dev(pf);
        struct ice_hw *hw = &pf->hw;
        bool dvm;
        int err;

        if (test_bit(ICE_DOWN, pf->state))
                goto clear_recovery;

        dev_dbg(dev, "rebuilding PF after reset_type=%d\n", reset_type);

#define ICE_EMP_RESET_SLEEP_MS 5000
        if (reset_type == ICE_RESET_EMPR) {
                /* If an EMP reset has occurred, any previously pending flash
                 * update will have completed. We no longer know whether or
                 * not the NVM update EMP reset is restricted.
                 */
                pf->fw_emp_reset_disabled = false;

                msleep(ICE_EMP_RESET_SLEEP_MS);
        }

        err = ice_init_all_ctrlq(hw);
        if (err) {
                dev_err(dev, "control queues init failed %d\n", err);
                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);
        }

        err = ice_clear_pf_cfg(hw);
        if (err) {
                dev_err(dev, "clear PF configuration failed %d\n", err);
                goto err_init_ctrlq;
        }

        ice_clear_pxe_mode(hw);

        err = ice_init_nvm(hw);
        if (err) {
                dev_err(dev, "ice_init_nvm failed %d\n", err);
                goto err_init_ctrlq;
        }

        err = ice_get_caps(hw);
        if (err) {
                dev_err(dev, "ice_get_caps failed %d\n", err);
                goto err_init_ctrlq;
        }

        err = ice_aq_set_mac_cfg(hw, ICE_AQ_SET_MAC_FRAME_SIZE_MAX, NULL);
        if (err) {
                dev_err(dev, "set_mac_cfg failed %d\n", err);
                goto err_init_ctrlq;
        }

        dvm = ice_is_dvm_ena(hw);

        err = ice_aq_set_port_params(pf->hw.port_info, dvm, NULL);
        if (err)
                goto err_init_ctrlq;

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

        /* start misc vector */
        err = ice_req_irq_msix_misc(pf);
        if (err) {
                dev_err(dev, "misc vector setup failed: %d\n", err);
                goto err_sched_init_port;
        }

        if (test_bit(ICE_FLAG_FD_ENA, pf->flags)) {
                wr32(hw, PFQF_FD_ENA, PFQF_FD_ENA_FD_ENA_M);
                if (!rd32(hw, PFQF_FD_SIZE)) {
                        u16 unused, guar, b_effort;

                        guar = hw->func_caps.fd_fltr_guar;
                        b_effort = hw->func_caps.fd_fltr_best_effort;

                        /* force guaranteed filter pool for PF */
                        ice_alloc_fd_guar_item(hw, &unused, guar);
                        /* force shared filter pool for PF */
                        ice_alloc_fd_shrd_item(hw, &unused, b_effort);
                }
        }

        if (test_bit(ICE_FLAG_DCB_ENA, pf->flags))
                ice_dcb_rebuild(pf);

        /* If the PF previously had enabled PTP, PTP init needs to happen before
         * the VSI rebuild. If not, this causes the PTP link status events to
         * fail.
         */
        if (test_bit(ICE_FLAG_PTP_SUPPORTED, pf->flags))
                ice_ptp_rebuild(pf, reset_type);

        if (ice_is_feature_supported(pf, ICE_F_GNSS))
                ice_gnss_init(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 (reset_type == ICE_RESET_PFR) {
                err = ice_rebuild_channels(pf);
                if (err) {
                        dev_err(dev, "failed to rebuild and replay ADQ VSIs, err %d\n",
                                err);
                        goto err_vsi_rebuild;
                }
        }

        /* If Flow Director is active */
        if (test_bit(ICE_FLAG_FD_ENA, pf->flags)) {
                err = ice_vsi_rebuild_by_type(pf, ICE_VSI_CTRL);
                if (err) {
                        dev_err(dev, "control VSI rebuild failed: %d\n", err);
                        goto err_vsi_rebuild;
                }

                /* replay HW Flow Director recipes */
                if (hw->fdir_prof)
                        ice_fdir_replay_flows(hw);

                /* replay Flow Director filters */
                ice_fdir_replay_fltrs(pf);

                ice_rebuild_arfs(pf);
        }

        if (vsi && vsi->netdev)
                netif_device_attach(vsi->netdev);

        ice_update_pf_netdev_link(pf);

        /* tell the firmware we are up */
        err = ice_send_version(pf);
        if (err) {
                dev_err(dev, "Rebuild failed due to error sending driver version: %d\n",
                        err);
                goto err_vsi_rebuild;
        }

        ice_replay_post(hw);

        /* if we get here, reset flow is successful */
        clear_bit(ICE_RESET_FAILED, pf->state);

        ice_plug_aux_dev(pf);
        if (ice_is_feature_supported(pf, ICE_F_SRIOV_LAG))
                ice_lag_rebuild(pf);

        /* Restore timestamp mode settings after VSI rebuild */
        ice_ptp_restore_timestamp_mode(pf);
        return;

err_vsi_rebuild:
err_sched_init_port:
        ice_sched_cleanup_all(hw);
err_init_ctrlq:
        ice_shutdown_all_ctrlq(hw, false);
        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_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
 */
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;
        struct bpf_prog *prog;
        u8 count = 0;
        int err = 0;

        if (new_mtu == (int)netdev->mtu) {
                netdev_warn(netdev, "MTU is already %u\n", netdev->mtu);
                return 0;
        }

        prog = vsi->xdp_prog;
        if (prog && !prog->aux->xdp_has_frags) {
                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;
                }
        } else if (test_bit(ICE_FLAG_LEGACY_RX, pf->flags)) {
                if (new_mtu + ICE_ETH_PKT_HDR_PAD > ICE_MAX_FRAME_LEGACY_RX) {
                        netdev_err(netdev, "Too big MTU for legacy-rx; Max is %d\n",
                                   ICE_MAX_FRAME_LEGACY_RX - ICE_ETH_PKT_HDR_PAD);
                        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;
        }

        WRITE_ONCE(netdev->mtu, (unsigned int)new_mtu);
        err = ice_down_up(vsi);
        if (err)
                return err;

        netdev_dbg(netdev, "changed MTU to %d\n", new_mtu);
        set_bit(ICE_FLAG_MTU_CHANGED, pf->flags);

        return err;
}

/**
 * ice_eth_ioctl - Access the hwtstamp interface
 * @netdev: network interface device structure
 * @ifr: interface request data
 * @cmd: ioctl command
 */
static int ice_eth_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
{
        struct ice_netdev_priv *np = netdev_priv(netdev);
        struct ice_pf *pf = np->vsi->back;

        switch (cmd) {
        case SIOCGHWTSTAMP:
                return ice_ptp_get_ts_config(pf, ifr);
        case SIOCSHWTSTAMP:
                return ice_ptp_set_ts_config(pf, ifr);
        default:
                return -EOPNOTSUPP;
        }
}

/**
 * ice_aq_str - convert AQ err code to a string
 * @aq_err: the AQ error code to convert
 */
const char *ice_aq_str(enum ice_aq_err aq_err)
{
        switch (aq_err) {
        case ICE_AQ_RC_OK:
                return "OK";
        case ICE_AQ_RC_EPERM:
                return "ICE_AQ_RC_EPERM";
        case ICE_AQ_RC_ENOENT:
                return "ICE_AQ_RC_ENOENT";
        case ICE_AQ_RC_ENOMEM:
                return "ICE_AQ_RC_ENOMEM";
        case ICE_AQ_RC_EBUSY:
                return "ICE_AQ_RC_EBUSY";
        case ICE_AQ_RC_EEXIST:
                return "ICE_AQ_RC_EEXIST";
        case ICE_AQ_RC_EINVAL:
                return "ICE_AQ_RC_EINVAL";
        case ICE_AQ_RC_ENOSPC:
                return "ICE_AQ_RC_ENOSPC";
        case ICE_AQ_RC_ENOSYS:
                return "ICE_AQ_RC_ENOSYS";
        case ICE_AQ_RC_EMODE:
                return "ICE_AQ_RC_EMODE";
        case ICE_AQ_RC_ENOSEC:
                return "ICE_AQ_RC_ENOSEC";
        case ICE_AQ_RC_EBADSIG:
                return "ICE_AQ_RC_EBADSIG";
        case ICE_AQ_RC_ESVN:
                return "ICE_AQ_RC_ESVN";
        case ICE_AQ_RC_EBADMAN:
                return "ICE_AQ_RC_EBADMAN";
        case ICE_AQ_RC_EBADBUF:
                return "ICE_AQ_RC_EBADBUF";
        }

        return "ICE_AQ_RC_UNKNOWN";
}

/**
 * ice_set_rss_lut - Set RSS LUT
 * @vsi: Pointer to VSI structure
 * @lut: Lookup table
 * @lut_size: Lookup table size
 *
 * Returns 0 on success, negative on failure
 */
int ice_set_rss_lut(struct ice_vsi *vsi, u8 *lut, u16 lut_size)
{
        struct ice_aq_get_set_rss_lut_params params = {};
        struct ice_hw *hw = &vsi->back->hw;
        int status;

        if (!lut)
                return -EINVAL;

        params.vsi_handle = vsi->idx;
        params.lut_size = lut_size;
        params.lut_type = vsi->rss_lut_type;
        params.lut = lut;

        status = ice_aq_set_rss_lut(hw, &params);
        if (status)
                dev_err(ice_pf_to_dev(vsi->back), "Cannot set RSS lut, err %d aq_err %s\n",
                        status, ice_aq_str(hw->adminq.sq_last_status));

        return status;
}

/**
 * ice_set_rss_key - Set RSS key
 * @vsi: Pointer to the VSI structure
 * @seed: RSS hash seed
 *
 * Returns 0 on success, negative on failure
 */
int ice_set_rss_key(struct ice_vsi *vsi, u8 *seed)
{
        struct ice_hw *hw = &vsi->back->hw;
        int status;

        if (!seed)
                return -EINVAL;

        status = ice_aq_set_rss_key(hw, vsi->idx, (struct ice_aqc_get_set_rss_keys *)seed);
        if (status)
                dev_err(ice_pf_to_dev(vsi->back), "Cannot set RSS key, err %d aq_err %s\n",
                        status, ice_aq_str(hw->adminq.sq_last_status));

        return status;
}

/**
 * ice_get_rss_lut - Get RSS LUT
 * @vsi: Pointer to VSI structure
 * @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_lut(struct ice_vsi *vsi, u8 *lut, u16 lut_size)
{
        struct ice_aq_get_set_rss_lut_params params = {};
        struct ice_hw *hw = &vsi->back->hw;
        int status;

        if (!lut)
                return -EINVAL;

        params.vsi_handle = vsi->idx;
        params.lut_size = lut_size;
        params.lut_type = vsi->rss_lut_type;
        params.lut = lut;

        status = ice_aq_get_rss_lut(hw, &params);
        if (status)
                dev_err(ice_pf_to_dev(vsi->back), "Cannot get RSS lut, err %d aq_err %s\n",
                        status, ice_aq_str(hw->adminq.sq_last_status));

        return status;
}

/**
 * ice_get_rss_key - Get RSS key
 * @vsi: Pointer to VSI structure
 * @seed: Buffer to store the key in
 *
 * Returns 0 on success, negative on failure
 */
int ice_get_rss_key(struct ice_vsi *vsi, u8 *seed)
{
        struct ice_hw *hw = &vsi->back->hw;
        int status;

        if (!seed)
                return -EINVAL;

        status = ice_aq_get_rss_key(hw, vsi->idx, (struct ice_aqc_get_set_rss_keys *)seed);
        if (status)
                dev_err(ice_pf_to_dev(vsi->back), "Cannot get RSS key, err %d aq_err %s\n",
                        status, ice_aq_str(hw->adminq.sq_last_status));

        return status;
}

/**
 * ice_set_rss_hfunc - Set RSS HASH function
 * @vsi: Pointer to VSI structure
 * @hfunc: hash function (ICE_AQ_VSI_Q_OPT_RSS_*)
 *
 * Returns 0 on success, negative on failure
 */
int ice_set_rss_hfunc(struct ice_vsi *vsi, u8 hfunc)
{
        struct ice_hw *hw = &vsi->back->hw;
        struct ice_vsi_ctx *ctx;
        bool symm;
        int err;

        if (hfunc == vsi->rss_hfunc)
                return 0;

        if (hfunc != ICE_AQ_VSI_Q_OPT_RSS_HASH_TPLZ &&
            hfunc != ICE_AQ_VSI_Q_OPT_RSS_HASH_SYM_TPLZ)
                return -EOPNOTSUPP;

        ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
        if (!ctx)
                return -ENOMEM;

        ctx->info.valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_Q_OPT_VALID);
        ctx->info.q_opt_rss = vsi->info.q_opt_rss;
        ctx->info.q_opt_rss &= ~ICE_AQ_VSI_Q_OPT_RSS_HASH_M;
        ctx->info.q_opt_rss |=
                FIELD_PREP(ICE_AQ_VSI_Q_OPT_RSS_HASH_M, hfunc);
        ctx->info.q_opt_tc = vsi->info.q_opt_tc;
        ctx->info.q_opt_flags = vsi->info.q_opt_rss;

        err = ice_update_vsi(hw, vsi->idx, ctx, NULL);
        if (err) {
                dev_err(ice_pf_to_dev(vsi->back), "Failed to configure RSS hash for VSI %d, error %d\n",
                        vsi->vsi_num, err);
        } else {
                vsi->info.q_opt_rss = ctx->info.q_opt_rss;
                vsi->rss_hfunc = hfunc;
                netdev_info(vsi->netdev, "Hash function set to: %sToeplitz\n",
                            hfunc == ICE_AQ_VSI_Q_OPT_RSS_HASH_SYM_TPLZ ?
                            "Symmetric " : "");
        }
        kfree(ctx);
        if (err)
                return err;

        /* Fix the symmetry setting for all existing RSS configurations */
        symm = !!(hfunc == ICE_AQ_VSI_Q_OPT_RSS_HASH_SYM_TPLZ);
        return ice_set_rss_cfg_symm(hw, vsi, symm);
}

/**
 * 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;
        int ret;

        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);

        ret = ice_update_vsi(hw, vsi->idx, ctxt, NULL);
        if (ret) {
                dev_err(ice_pf_to_dev(vsi->back), "update VSI for bridge mode failed, bmode = %d err %d aq_err %s\n",
                        bmode, ret, ice_aq_str(hw->adminq.sq_last_status));
                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;
        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);
        if (!br_spec)
                return -EINVAL;

        nla_for_each_nested_type(attr, IFLA_BRIDGE_MODE, br_spec, rem) {
                __u16 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
                 */
                err = ice_update_sw_rule_bridge_mode(hw);
                if (err) {
                        netdev_err(dev, "switch rule update failed, mode = %d err %d aq_err %s\n",
                                   mode, err,
                                   ice_aq_str(hw->adminq.sq_last_status));
                        /* revert hw->evb_veb */
                        hw->evb_veb = (pf_sw->bridge_mode == BRIDGE_MODE_VEB);
                        return err;
                }

                pf_sw->bridge_mode = mode;
        }

        return 0;
}

/**
 * ice_tx_timeout - Respond to a Tx Hang
 * @netdev: network interface device structure
 * @txqueue: Tx queue
 */
void ice_tx_timeout(struct net_device *netdev, unsigned int txqueue)
{
        struct ice_netdev_priv *np = netdev_priv(netdev);
        struct ice_tx_ring *tx_ring = NULL;
        struct ice_vsi *vsi = np->vsi;
        struct ice_pf *pf = vsi->back;
        u32 i;

        pf->tx_timeout_count++;

        /* Check if PFC is enabled for the TC to which the queue belongs
         * to. If yes then Tx timeout is not caused by a hung queue, no
         * need to reset and rebuild
         */
        if (ice_is_pfc_causing_hung_q(pf, txqueue)) {
                dev_info(ice_pf_to_dev(pf), "Fake Tx hang detected on queue %u, timeout caused by PFC storm\n",
                         txqueue);
                return;
        }

        /* now that we have an index, find the tx_ring struct */
        ice_for_each_txq(vsi, 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 = FIELD_GET(QTX_COMM_HEAD_HEAD_M,
                                 rd32(hw, QTX_COMM_HEAD(vsi->txq_map[txqueue])));
                /* 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_VSI_NEEDS_RESTART, vsi->state);
                set_bit(ICE_SERVICE_DIS, pf->state);
                break;
        }

        ice_service_task_schedule(pf);
        pf->tx_timeout_recovery_level++;
}

/**
 * ice_setup_tc_cls_flower - flower classifier offloads
 * @np: net device to configure
 * @filter_dev: device on which filter is added
 * @cls_flower: offload data
 */
static int
ice_setup_tc_cls_flower(struct ice_netdev_priv *np,
                        struct net_device *filter_dev,
                        struct flow_cls_offload *cls_flower)
{
        struct ice_vsi *vsi = np->vsi;

        if (cls_flower->common.chain_index)
                return -EOPNOTSUPP;

        switch (cls_flower->command) {
        case FLOW_CLS_REPLACE:
                return ice_add_cls_flower(filter_dev, vsi, cls_flower);
        case FLOW_CLS_DESTROY:
                return ice_del_cls_flower(vsi, cls_flower);
        default:
                return -EINVAL;
        }
}

/**
 * ice_setup_tc_block_cb - callback handler registered for TC block
 * @type: TC SETUP type
 * @type_data: TC flower offload data that contains user input
 * @cb_priv: netdev private data
 */
static int
ice_setup_tc_block_cb(enum tc_setup_type type, void *type_data, void *cb_priv)
{
        struct ice_netdev_priv *np = cb_priv;

        switch (type) {
        case TC_SETUP_CLSFLOWER:
                return ice_setup_tc_cls_flower(np, np->vsi->netdev,
                                               type_data);
        default:
                return -EOPNOTSUPP;
        }
}

/**
 * ice_validate_mqprio_qopt - Validate TCF input parameters
 * @vsi: Pointer to VSI
 * @mqprio_qopt: input parameters for mqprio queue configuration
 *
 * This function validates MQPRIO params, such as qcount (power of 2 wherever
 * needed), and make sure user doesn't specify qcount and BW rate limit
 * for TCs, which are more than "num_tc"
 */
static int
ice_validate_mqprio_qopt(struct ice_vsi *vsi,
                         struct tc_mqprio_qopt_offload *mqprio_qopt)
{
        int non_power_of_2_qcount = 0;
        struct ice_pf *pf = vsi->back;
        int max_rss_q_cnt = 0;
        u64 sum_min_rate = 0;
        struct device *dev;
        int i, speed;
        u8 num_tc;

        if (vsi->type != ICE_VSI_PF)
                return -EINVAL;

        if (mqprio_qopt->qopt.offset[0] != 0 ||
            mqprio_qopt->qopt.num_tc < 1 ||
            mqprio_qopt->qopt.num_tc > ICE_CHNL_MAX_TC)
                return -EINVAL;

        dev = ice_pf_to_dev(pf);
        vsi->ch_rss_size = 0;
        num_tc = mqprio_qopt->qopt.num_tc;
        speed = ice_get_link_speed_kbps(vsi);

        for (i = 0; num_tc; i++) {
                int qcount = mqprio_qopt->qopt.count[i];
                u64 max_rate, min_rate, rem;

                if (!qcount)
                        return -EINVAL;

                if (is_power_of_2(qcount)) {
                        if (non_power_of_2_qcount &&
                            qcount > non_power_of_2_qcount) {
                                dev_err(dev, "qcount[%d] cannot be greater than non power of 2 qcount[%d]\n",
                                        qcount, non_power_of_2_qcount);
                                return -EINVAL;
                        }
                        if (qcount > max_rss_q_cnt)
                                max_rss_q_cnt = qcount;
                } else {
                        if (non_power_of_2_qcount &&
                            qcount != non_power_of_2_qcount) {
                                dev_err(dev, "Only one non power of 2 qcount allowed[%d,%d]\n",
                                        qcount, non_power_of_2_qcount);
                                return -EINVAL;
                        }
                        if (qcount < max_rss_q_cnt) {
                                dev_err(dev, "non power of 2 qcount[%d] cannot be less than other qcount[%d]\n",
                                        qcount, max_rss_q_cnt);
                                return -EINVAL;
                        }
                        max_rss_q_cnt = qcount;
                        non_power_of_2_qcount = qcount;
                }

                /* TC command takes input in K/N/Gbps or K/M/Gbit etc but
                 * converts the bandwidth rate limit into Bytes/s when
                 * passing it down to the driver. So convert input bandwidth
                 * from Bytes/s to Kbps
                 */
                max_rate = mqprio_qopt->max_rate[i];
                max_rate = div_u64(max_rate, ICE_BW_KBPS_DIVISOR);

                /* min_rate is minimum guaranteed rate and it can't be zero */
                min_rate = mqprio_qopt->min_rate[i];
                min_rate = div_u64(min_rate, ICE_BW_KBPS_DIVISOR);
                sum_min_rate += min_rate;

                if (min_rate && min_rate < ICE_MIN_BW_LIMIT) {
                        dev_err(dev, "TC%d: min_rate(%llu Kbps) < %u Kbps\n", i,
                                min_rate, ICE_MIN_BW_LIMIT);
                        return -EINVAL;
                }

                if (max_rate && max_rate > speed) {
                        dev_err(dev, "TC%d: max_rate(%llu Kbps) > link speed of %u Kbps\n",
                                i, max_rate, speed);
                        return -EINVAL;
                }

                iter_div_u64_rem(min_rate, ICE_MIN_BW_LIMIT, &rem);
                if (rem) {
                        dev_err(dev, "TC%d: Min Rate not multiple of %u Kbps",
                                i, ICE_MIN_BW_LIMIT);
                        return -EINVAL;
                }

                iter_div_u64_rem(max_rate, ICE_MIN_BW_LIMIT, &rem);
                if (rem) {
                        dev_err(dev, "TC%d: Max Rate not multiple of %u Kbps",
                                i, ICE_MIN_BW_LIMIT);
                        return -EINVAL;
                }

                /* min_rate can't be more than max_rate, except when max_rate
                 * is zero (implies max_rate sought is max line rate). In such
                 * a case min_rate can be more than max.
                 */
                if (max_rate && min_rate > max_rate) {
                        dev_err(dev, "min_rate %llu Kbps can't be more than max_rate %llu Kbps\n",
                                min_rate, max_rate);
                        return -EINVAL;
                }

                if (i >= mqprio_qopt->qopt.num_tc - 1)
                        break;
                if (mqprio_qopt->qopt.offset[i + 1] !=
                    (mqprio_qopt->qopt.offset[i] + qcount))
                        return -EINVAL;
        }
        if (vsi->num_rxq <
            (mqprio_qopt->qopt.offset[i] + mqprio_qopt->qopt.count[i]))
                return -EINVAL;
        if (vsi->num_txq <
            (mqprio_qopt->qopt.offset[i] + mqprio_qopt->qopt.count[i]))
                return -EINVAL;

        if (sum_min_rate && sum_min_rate > (u64)speed) {
                dev_err(dev, "Invalid min Tx rate(%llu) Kbps > speed (%u) Kbps specified\n",
                        sum_min_rate, speed);
                return -EINVAL;
        }

        /* make sure vsi->ch_rss_size is set correctly based on TC's qcount */
        vsi->ch_rss_size = max_rss_q_cnt;

        return 0;
}

/**
 * ice_add_vsi_to_fdir - add a VSI to the flow director group for PF
 * @pf: ptr to PF device
 * @vsi: ptr to VSI
 */
static int ice_add_vsi_to_fdir(struct ice_pf *pf, struct ice_vsi *vsi)
{
        struct device *dev = ice_pf_to_dev(pf);
        bool added = false;
        struct ice_hw *hw;
        int flow;

        if (!(vsi->num_gfltr || vsi->num_bfltr))
                return -EINVAL;

        hw = &pf->hw;
        for (flow = 0; flow < ICE_FLTR_PTYPE_MAX; flow++) {
                struct ice_fd_hw_prof *prof;
                int tun, status;
                u64 entry_h;

                if (!(hw->fdir_prof && hw->fdir_prof[flow] &&
                      hw->fdir_prof[flow]->cnt))
                        continue;

                for (tun = 0; tun < ICE_FD_HW_SEG_MAX; tun++) {
                        enum ice_flow_priority prio;

                        /* add this VSI to FDir profile for this flow */
                        prio = ICE_FLOW_PRIO_NORMAL;
                        prof = hw->fdir_prof[flow];
                        status = ice_flow_add_entry(hw, ICE_BLK_FD,
                                                    prof->prof_id[tun],
                                                    prof->vsi_h[0], vsi->idx,
                                                    prio, prof->fdir_seg[tun],
                                                    &entry_h);
                        if (status) {
                                dev_err(dev, "channel VSI idx %d, not able to add to group %d\n",
                                        vsi->idx, flow);
                                continue;
                        }

                        prof->entry_h[prof->cnt][tun] = entry_h;
                }

                /* store VSI for filter replay and delete */
                prof->vsi_h[prof->cnt] = vsi->idx;
                prof->cnt++;

                added = true;
                dev_dbg(dev, "VSI idx %d added to fdir group %d\n", vsi->idx,
                        flow);
        }

        if (!added)
                dev_dbg(dev, "VSI idx %d not added to fdir groups\n", vsi->idx);

        return 0;
}

/**
 * ice_add_channel - add a channel by adding VSI
 * @pf: ptr to PF device
 * @sw_id: underlying HW switching element ID
 * @ch: ptr to channel structure
 *
 * Add a channel (VSI) using add_vsi and queue_map
 */
static int ice_add_channel(struct ice_pf *pf, u16 sw_id, struct ice_channel *ch)
{
        struct device *dev = ice_pf_to_dev(pf);
        struct ice_vsi *vsi;

        if (ch->type != ICE_VSI_CHNL) {
                dev_err(dev, "add new VSI failed, ch->type %d\n", ch->type);
                return -EINVAL;
        }

        vsi = ice_chnl_vsi_setup(pf, pf->hw.port_info, ch);
        if (!vsi || vsi->type != ICE_VSI_CHNL) {
                dev_err(dev, "create chnl VSI failure\n");
                return -EINVAL;
        }

        ice_add_vsi_to_fdir(pf, vsi);

        ch->sw_id = sw_id;
        ch->vsi_num = vsi->vsi_num;
        ch->info.mapping_flags = vsi->info.mapping_flags;
        ch->ch_vsi = vsi;
        /* set the back pointer of channel for newly created VSI */
        vsi->ch = ch;

        memcpy(&ch->info.q_mapping, &vsi->info.q_mapping,
               sizeof(vsi->info.q_mapping));
        memcpy(&ch->info.tc_mapping, vsi->info.tc_mapping,
               sizeof(vsi->info.tc_mapping));

        return 0;
}

/**
 * ice_chnl_cfg_res
 * @vsi: the VSI being setup
 * @ch: ptr to channel structure
 *
 * Configure channel specific resources such as rings, vector.
 */
static void ice_chnl_cfg_res(struct ice_vsi *vsi, struct ice_channel *ch)
{
        int i;

        for (i = 0; i < ch->num_txq; i++) {
                struct ice_q_vector *tx_q_vector, *rx_q_vector;
                struct ice_ring_container *rc;
                struct ice_tx_ring *tx_ring;
                struct ice_rx_ring *rx_ring;

                tx_ring = vsi->tx_rings[ch->base_q + i];
                rx_ring = vsi->rx_rings[ch->base_q + i];
                if (!tx_ring || !rx_ring)
                        continue;

                /* setup ring being channel enabled */
                tx_ring->ch = ch;
                rx_ring->ch = ch;

                /* following code block sets up vector specific attributes */
                tx_q_vector = tx_ring->q_vector;
                rx_q_vector = rx_ring->q_vector;
                if (!tx_q_vector && !rx_q_vector)
                        continue;

                if (tx_q_vector) {
                        tx_q_vector->ch = ch;
                        /* setup Tx and Rx ITR setting if DIM is off */
                        rc = &tx_q_vector->tx;
                        if (!ITR_IS_DYNAMIC(rc))
                                ice_write_itr(rc, rc->itr_setting);
                }
                if (rx_q_vector) {
                        rx_q_vector->ch = ch;
                        /* setup Tx and Rx ITR setting if DIM is off */
                        rc = &rx_q_vector->rx;
                        if (!ITR_IS_DYNAMIC(rc))
                                ice_write_itr(rc, rc->itr_setting);
                }
        }

        /* it is safe to assume that, if channel has non-zero num_t[r]xq, then
         * GLINT_ITR register would have written to perform in-context
         * update, hence perform flush
         */
        if (ch->num_txq || ch->num_rxq)
                ice_flush(&vsi->back->hw);
}

/**
 * ice_cfg_chnl_all_res - configure channel resources
 * @vsi: pte to main_vsi
 * @ch: ptr to channel structure
 *
 * This function configures channel specific resources such as flow-director
 * counter index, and other resources such as queues, vectors, ITR settings
 */
static void
ice_cfg_chnl_all_res(struct ice_vsi *vsi, struct ice_channel *ch)
{
        /* configure channel (aka ADQ) resources such as queues, vectors,
         * ITR settings for channel specific vectors and anything else
         */
        ice_chnl_cfg_res(vsi, ch);
}

/**
 * ice_setup_hw_channel - setup new channel
 * @pf: ptr to PF device
 * @vsi: the VSI being setup
 * @ch: ptr to channel structure
 * @sw_id: underlying HW switching element ID
 * @type: type of channel to be created (VMDq2/VF)
 *
 * Setup new channel (VSI) based on specified type (VMDq2/VF)
 * and configures Tx rings accordingly
 */
static int
ice_setup_hw_channel(struct ice_pf *pf, struct ice_vsi *vsi,
                     struct ice_channel *ch, u16 sw_id, u8 type)
{
        struct device *dev = ice_pf_to_dev(pf);
        int ret;

        ch->base_q = vsi->next_base_q;
        ch->type = type;

        ret = ice_add_channel(pf, sw_id, ch);
        if (ret) {
                dev_err(dev, "failed to add_channel using sw_id %u\n", sw_id);
                return ret;
        }

        /* configure/setup ADQ specific resources */
        ice_cfg_chnl_all_res(vsi, ch);

        /* make sure to update the next_base_q so that subsequent channel's
         * (aka ADQ) VSI queue map is correct
         */
        vsi->next_base_q = vsi->next_base_q + ch->num_rxq;
        dev_dbg(dev, "added channel: vsi_num %u, num_rxq %u\n", ch->vsi_num,
                ch->num_rxq);

        return 0;
}

/**
 * ice_setup_channel - setup new channel using uplink element
 * @pf: ptr to PF device
 * @vsi: the VSI being setup
 * @ch: ptr to channel structure
 *
 * Setup new channel (VSI) based on specified type (VMDq2/VF)
 * and uplink switching element
 */
static bool
ice_setup_channel(struct ice_pf *pf, struct ice_vsi *vsi,
                  struct ice_channel *ch)
{
        struct device *dev = ice_pf_to_dev(pf);
        u16 sw_id;
        int ret;

        if (vsi->type != ICE_VSI_PF) {
                dev_err(dev, "unsupported parent VSI type(%d)\n", vsi->type);
                return false;
        }

        sw_id = pf->first_sw->sw_id;

        /* create channel (VSI) */
        ret = ice_setup_hw_channel(pf, vsi, ch, sw_id, ICE_VSI_CHNL);
        if (ret) {
                dev_err(dev, "failed to setup hw_channel\n");
                return false;
        }
        dev_dbg(dev, "successfully created channel()\n");

        return ch->ch_vsi ? true : false;
}

/**
 * ice_set_bw_limit - setup BW limit for Tx traffic based on max_tx_rate
 * @vsi: VSI to be configured
 * @max_tx_rate: max Tx rate in Kbps to be configured as maximum BW limit
 * @min_tx_rate: min Tx rate in Kbps to be configured as minimum BW limit
 */
static int
ice_set_bw_limit(struct ice_vsi *vsi, u64 max_tx_rate, u64 min_tx_rate)
{
        int err;

        err = ice_set_min_bw_limit(vsi, min_tx_rate);
        if (err)
                return err;

        return ice_set_max_bw_limit(vsi, max_tx_rate);
}

/**
 * ice_create_q_channel - function to create channel
 * @vsi: VSI to be configured
 * @ch: ptr to channel (it contains channel specific params)
 *
 * This function creates channel (VSI) using num_queues specified by user,
 * reconfigs RSS if needed.
 */
static int ice_create_q_channel(struct ice_vsi *vsi, struct ice_channel *ch)
{
        struct ice_pf *pf = vsi->back;
        struct device *dev;

        if (!ch)
                return -EINVAL;

        dev = ice_pf_to_dev(pf);
        if (!ch->num_txq || !ch->num_rxq) {
                dev_err(dev, "Invalid num_queues requested: %d\n", ch->num_rxq);
                return -EINVAL;
        }

        if (!vsi->cnt_q_avail || vsi->cnt_q_avail < ch->num_txq) {
                dev_err(dev, "cnt_q_avail (%u) less than num_queues %d\n",
                        vsi->cnt_q_avail, ch->num_txq);
                return -EINVAL;
        }

        if (!ice_setup_channel(pf, vsi, ch)) {
                dev_info(dev, "Failed to setup channel\n");
                return -EINVAL;
        }
        /* configure BW rate limit */
        if (ch->ch_vsi && (ch->max_tx_rate || ch->min_tx_rate)) {
                int ret;

                ret = ice_set_bw_limit(ch->ch_vsi, ch->max_tx_rate,
                                       ch->min_tx_rate);
                if (ret)
                        dev_err(dev, "failed to set Tx rate of %llu Kbps for VSI(%u)\n",
                                ch->max_tx_rate, ch->ch_vsi->vsi_num);
                else
                        dev_dbg(dev, "set Tx rate of %llu Kbps for VSI(%u)\n",
                                ch->max_tx_rate, ch->ch_vsi->vsi_num);
        }

        vsi->cnt_q_avail -= ch->num_txq;

        return 0;
}

/**
 * ice_rem_all_chnl_fltrs - removes all channel filters
 * @pf: ptr to PF, TC-flower based filter are tracked at PF level
 *
 * Remove all advanced switch filters only if they are channel specific
 * tc-flower based filter
 */
static void ice_rem_all_chnl_fltrs(struct ice_pf *pf)
{
        struct ice_tc_flower_fltr *fltr;
        struct hlist_node *node;

        /* to remove all channel filters, iterate an ordered list of filters */
        hlist_for_each_entry_safe(fltr, node,
                                  &pf->tc_flower_fltr_list,
                                  tc_flower_node) {
                struct ice_rule_query_data rule;
                int status;

                /* for now process only channel specific filters */
                if (!ice_is_chnl_fltr(fltr))
                        continue;

                rule.rid = fltr->rid;
                rule.rule_id = fltr->rule_id;
                rule.vsi_handle = fltr->dest_vsi_handle;
                status = ice_rem_adv_rule_by_id(&pf->hw, &rule);
                if (status) {
                        if (status == -ENOENT)
                                dev_dbg(ice_pf_to_dev(pf), "TC flower filter (rule_id %u) does not exist\n",
                                        rule.rule_id);
                        else
                                dev_err(ice_pf_to_dev(pf), "failed to delete TC flower filter, status %d\n",
                                        status);
                } else if (fltr->dest_vsi) {
                        /* update advanced switch filter count */
                        if (fltr->dest_vsi->type == ICE_VSI_CHNL) {
                                u32 flags = fltr->flags;

                                fltr->dest_vsi->num_chnl_fltr--;
                                if (flags & (ICE_TC_FLWR_FIELD_DST_MAC |
                                             ICE_TC_FLWR_FIELD_ENC_DST_MAC))
                                        pf->num_dmac_chnl_fltrs--;
                        }
                }

                hlist_del(&fltr->tc_flower_node);
                kfree(fltr);
        }
}

/**
 * ice_remove_q_channels - Remove queue channels for the TCs
 * @vsi: VSI to be configured
 * @rem_fltr: delete advanced switch filter or not
 *
 * Remove queue channels for the TCs
 */
static void ice_remove_q_channels(struct ice_vsi *vsi, bool rem_fltr)
{
        struct ice_channel *ch, *ch_tmp;
        struct ice_pf *pf = vsi->back;
        int i;

        /* remove all tc-flower based filter if they are channel filters only */
        if (rem_fltr)
                ice_rem_all_chnl_fltrs(pf);

        /* remove ntuple filters since queue configuration is being changed */
        if  (vsi->netdev->features & NETIF_F_NTUPLE) {
                struct ice_hw *hw = &pf->hw;

                mutex_lock(&hw->fdir_fltr_lock);
                ice_fdir_del_all_fltrs(vsi);
                mutex_unlock(&hw->fdir_fltr_lock);
        }

        /* perform cleanup for channels if they exist */
        list_for_each_entry_safe(ch, ch_tmp, &vsi->ch_list, list) {
                struct ice_vsi *ch_vsi;

                list_del(&ch->list);
                ch_vsi = ch->ch_vsi;
                if (!ch_vsi) {
                        kfree(ch);
                        continue;
                }

                /* Reset queue contexts */
                for (i = 0; i < ch->num_rxq; i++) {
                        struct ice_tx_ring *tx_ring;
                        struct ice_rx_ring *rx_ring;

                        tx_ring = vsi->tx_rings[ch->base_q + i];
                        rx_ring = vsi->rx_rings[ch->base_q + i];
                        if (tx_ring) {
                                tx_ring->ch = NULL;
                                if (tx_ring->q_vector)
                                        tx_ring->q_vector->ch = NULL;
                        }
                        if (rx_ring) {
                                rx_ring->ch = NULL;
                                if (rx_ring->q_vector)
                                        rx_ring->q_vector->ch = NULL;
                        }
                }

                /* Release FD resources for the channel VSI */
                ice_fdir_rem_adq_chnl(&pf->hw, ch->ch_vsi->idx);

                /* clear the VSI from scheduler tree */
                ice_rm_vsi_lan_cfg(ch->ch_vsi->port_info, ch->ch_vsi->idx);

                /* Delete VSI from FW, PF and HW VSI arrays */
                ice_vsi_delete(ch->ch_vsi);

                /* free the channel */
                kfree(ch);
        }

        /* clear the channel VSI map which is stored in main VSI */
        ice_for_each_chnl_tc(i)
                vsi->tc_map_vsi[i] = NULL;

        /* reset main VSI's all TC information */
        vsi->all_enatc = 0;
        vsi->all_numtc = 0;
}

/**
 * ice_rebuild_channels - rebuild channel
 * @pf: ptr to PF
 *
 * Recreate channel VSIs and replay filters
 */
static int ice_rebuild_channels(struct ice_pf *pf)
{
        struct device *dev = ice_pf_to_dev(pf);
        struct ice_vsi *main_vsi;
        bool rem_adv_fltr = true;
        struct ice_channel *ch;
        struct ice_vsi *vsi;
        int tc_idx = 1;
        int i, err;

        main_vsi = ice_get_main_vsi(pf);
        if (!main_vsi)
                return 0;

        if (!test_bit(ICE_FLAG_TC_MQPRIO, pf->flags) ||
            main_vsi->old_numtc == 1)
                return 0; /* nothing to be done */

        /* reconfigure main VSI based on old value of TC and cached values
         * for MQPRIO opts
         */
        err = ice_vsi_cfg_tc(main_vsi, main_vsi->old_ena_tc);
        if (err) {
                dev_err(dev, "failed configuring TC(ena_tc:0x%02x) for HW VSI=%u\n",
                        main_vsi->old_ena_tc, main_vsi->vsi_num);
                return err;
        }

        /* rebuild ADQ VSIs */
        ice_for_each_vsi(pf, i) {
                enum ice_vsi_type type;

                vsi = pf->vsi[i];
                if (!vsi || vsi->type != ICE_VSI_CHNL)
                        continue;

                type = vsi->type;

                /* rebuild ADQ VSI */
                err = ice_vsi_rebuild(vsi, ICE_VSI_FLAG_INIT);
                if (err) {
                        dev_err(dev, "VSI (type:%s) at index %d rebuild failed, err %d\n",
                                ice_vsi_type_str(type), vsi->idx, err);
                        goto cleanup;
                }

                /* 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);

                /* replay filters for the VSI */
                err = ice_replay_vsi(&pf->hw, vsi->idx);
                if (err) {
                        dev_err(dev, "VSI (type:%s) replay failed, err %d, VSI index %d\n",
                                ice_vsi_type_str(type), err, vsi->idx);
                        rem_adv_fltr = false;
                        goto cleanup;
                }
                dev_info(dev, "VSI (type:%s) at index %d rebuilt successfully\n",
                         ice_vsi_type_str(type), vsi->idx);

                /* store ADQ VSI at correct TC index in main VSI's
                 * map of TC to VSI
                 */
                main_vsi->tc_map_vsi[tc_idx++] = vsi;
        }

        /* ADQ VSI(s) has been rebuilt successfully, so setup
         * channel for main VSI's Tx and Rx rings
         */
        list_for_each_entry(ch, &main_vsi->ch_list, list) {
                struct ice_vsi *ch_vsi;

                ch_vsi = ch->ch_vsi;
                if (!ch_vsi)
                        continue;

                /* reconfig channel resources */
                ice_cfg_chnl_all_res(main_vsi, ch);

                /* replay BW rate limit if it is non-zero */
                if (!ch->max_tx_rate && !ch->min_tx_rate)
                        continue;

                err = ice_set_bw_limit(ch_vsi, ch->max_tx_rate,
                                       ch->min_tx_rate);
                if (err)
                        dev_err(dev, "failed (err:%d) to rebuild BW rate limit, max_tx_rate: %llu Kbps, min_tx_rate: %llu Kbps for VSI(%u)\n",
                                err, ch->max_tx_rate, ch->min_tx_rate,
                                ch_vsi->vsi_num);
                else
                        dev_dbg(dev, "successfully rebuild BW rate limit, max_tx_rate: %llu Kbps, min_tx_rate: %llu Kbps for VSI(%u)\n",
                                ch->max_tx_rate, ch->min_tx_rate,
                                ch_vsi->vsi_num);
        }

        /* reconfig RSS for main VSI */
        if (main_vsi->ch_rss_size)
                ice_vsi_cfg_rss_lut_key(main_vsi);

        return 0;

cleanup:
        ice_remove_q_channels(main_vsi, rem_adv_fltr);
        return err;
}

/**
 * ice_create_q_channels - Add queue channel for the given TCs
 * @vsi: VSI to be configured
 *
 * Configures queue channel mapping to the given TCs
 */
static int ice_create_q_channels(struct ice_vsi *vsi)
{
        struct ice_pf *pf = vsi->back;
        struct ice_channel *ch;
        int ret = 0, i;

        ice_for_each_chnl_tc(i) {
                if (!(vsi->all_enatc & BIT(i)))
                        continue;

                ch = kzalloc(sizeof(*ch), GFP_KERNEL);
                if (!ch) {
                        ret = -ENOMEM;
                        goto err_free;
                }
                INIT_LIST_HEAD(&ch->list);
                ch->num_rxq = vsi->mqprio_qopt.qopt.count[i];
                ch->num_txq = vsi->mqprio_qopt.qopt.count[i];
                ch->base_q = vsi->mqprio_qopt.qopt.offset[i];
                ch->max_tx_rate = vsi->mqprio_qopt.max_rate[i];
                ch->min_tx_rate = vsi->mqprio_qopt.min_rate[i];

                /* convert to Kbits/s */
                if (ch->max_tx_rate)
                        ch->max_tx_rate = div_u64(ch->max_tx_rate,
                                                  ICE_BW_KBPS_DIVISOR);
                if (ch->min_tx_rate)
                        ch->min_tx_rate = div_u64(ch->min_tx_rate,
                                                  ICE_BW_KBPS_DIVISOR);

                ret = ice_create_q_channel(vsi, ch);
                if (ret) {
                        dev_err(ice_pf_to_dev(pf),
                                "failed creating channel TC:%d\n", i);
                        kfree(ch);
                        goto err_free;
                }
                list_add_tail(&ch->list, &vsi->ch_list);
                vsi->tc_map_vsi[i] = ch->ch_vsi;
                dev_dbg(ice_pf_to_dev(pf),
                        "successfully created channel: VSI %pK\n", ch->ch_vsi);
        }
        return 0;

err_free:
        ice_remove_q_channels(vsi, false);

        return ret;
}

/**
 * ice_setup_tc_mqprio_qdisc - configure multiple traffic classes
 * @netdev: net device to configure
 * @type_data: TC offload data
 */
static int ice_setup_tc_mqprio_qdisc(struct net_device *netdev, void *type_data)
{
        struct tc_mqprio_qopt_offload *mqprio_qopt = type_data;
        struct ice_netdev_priv *np = netdev_priv(netdev);
        struct ice_vsi *vsi = np->vsi;
        struct ice_pf *pf = vsi->back;
        u16 mode, ena_tc_qdisc = 0;
        int cur_txq, cur_rxq;
        u8 hw = 0, num_tcf;
        struct device *dev;
        int ret, i;

        dev = ice_pf_to_dev(pf);
        num_tcf = mqprio_qopt->qopt.num_tc;
        hw = mqprio_qopt->qopt.hw;
        mode = mqprio_qopt->mode;
        if (!hw) {
                clear_bit(ICE_FLAG_TC_MQPRIO, pf->flags);
                vsi->ch_rss_size = 0;
                memcpy(&vsi->mqprio_qopt, mqprio_qopt, sizeof(*mqprio_qopt));
                goto config_tcf;
        }

        /* Generate queue region map for number of TCF requested */
        for (i = 0; i < num_tcf; i++)
                ena_tc_qdisc |= BIT(i);

        switch (mode) {
        case TC_MQPRIO_MODE_CHANNEL:

                if (pf->hw.port_info->is_custom_tx_enabled) {
                        dev_err(dev, "Custom Tx scheduler feature enabled, can't configure ADQ\n");
                        return -EBUSY;
                }
                ice_tear_down_devlink_rate_tree(pf);

                ret = ice_validate_mqprio_qopt(vsi, mqprio_qopt);
                if (ret) {
                        netdev_err(netdev, "failed to validate_mqprio_qopt(), ret %d\n",
                                   ret);
                        return ret;
                }
                memcpy(&vsi->mqprio_qopt, mqprio_qopt, sizeof(*mqprio_qopt));
                set_bit(ICE_FLAG_TC_MQPRIO, pf->flags);
                /* don't assume state of hw_tc_offload during driver load
                 * and set the flag for TC flower filter if hw_tc_offload
                 * already ON
                 */
                if (vsi->netdev->features & NETIF_F_HW_TC)
                        set_bit(ICE_FLAG_CLS_FLOWER, pf->flags);
                break;
        default:
                return -EINVAL;
        }

config_tcf:

        /* Requesting same TCF configuration as already enabled */
        if (ena_tc_qdisc == vsi->tc_cfg.ena_tc &&
            mode != TC_MQPRIO_MODE_CHANNEL)
                return 0;

        /* Pause VSI queues */
        ice_dis_vsi(vsi, true);

        if (!hw && !test_bit(ICE_FLAG_TC_MQPRIO, pf->flags))
                ice_remove_q_channels(vsi, true);

        if (!hw && !test_bit(ICE_FLAG_TC_MQPRIO, pf->flags)) {
                vsi->req_txq = min_t(int, ice_get_avail_txq_count(pf),
                                     num_online_cpus());
                vsi->req_rxq = min_t(int, ice_get_avail_rxq_count(pf),
                                     num_online_cpus());
        } else {
                /* logic to rebuild VSI, same like ethtool -L */
                u16 offset = 0, qcount_tx = 0, qcount_rx = 0;

                for (i = 0; i < num_tcf; i++) {
                        if (!(ena_tc_qdisc & BIT(i)))
                                continue;

                        offset = vsi->mqprio_qopt.qopt.offset[i];
                        qcount_rx = vsi->mqprio_qopt.qopt.count[i];
                        qcount_tx = vsi->mqprio_qopt.qopt.count[i];
                }
                vsi->req_txq = offset + qcount_tx;
                vsi->req_rxq = offset + qcount_rx;

                /* store away original rss_size info, so that it gets reused
                 * form ice_vsi_rebuild during tc-qdisc delete stage - to
                 * determine, what should be the rss_sizefor main VSI
                 */
                vsi->orig_rss_size = vsi->rss_size;
        }

        /* save current values of Tx and Rx queues before calling VSI rebuild
         * for fallback option
         */
        cur_txq = vsi->num_txq;
        cur_rxq = vsi->num_rxq;

        /* proceed with rebuild main VSI using correct number of queues */
        ret = ice_vsi_rebuild(vsi, ICE_VSI_FLAG_NO_INIT);
        if (ret) {
                /* fallback to current number of queues */
                dev_info(dev, "Rebuild failed with new queues, try with current number of queues\n");
                vsi->req_txq = cur_txq;
                vsi->req_rxq = cur_rxq;
                clear_bit(ICE_RESET_FAILED, pf->state);
                if (ice_vsi_rebuild(vsi, ICE_VSI_FLAG_NO_INIT)) {
                        dev_err(dev, "Rebuild of main VSI failed again\n");
                        return ret;
                }
        }

        vsi->all_numtc = num_tcf;
        vsi->all_enatc = ena_tc_qdisc;
        ret = ice_vsi_cfg_tc(vsi, ena_tc_qdisc);
        if (ret) {
                netdev_err(netdev, "failed configuring TC for VSI id=%d\n",
                           vsi->vsi_num);
                goto exit;
        }

        if (test_bit(ICE_FLAG_TC_MQPRIO, pf->flags)) {
                u64 max_tx_rate = vsi->mqprio_qopt.max_rate[0];
                u64 min_tx_rate = vsi->mqprio_qopt.min_rate[0];

                /* set TC0 rate limit if specified */
                if (max_tx_rate || min_tx_rate) {
                        /* convert to Kbits/s */
                        if (max_tx_rate)
                                max_tx_rate = div_u64(max_tx_rate, ICE_BW_KBPS_DIVISOR);
                        if (min_tx_rate)
                                min_tx_rate = div_u64(min_tx_rate, ICE_BW_KBPS_DIVISOR);

                        ret = ice_set_bw_limit(vsi, max_tx_rate, min_tx_rate);
                        if (!ret) {
                                dev_dbg(dev, "set Tx rate max %llu min %llu for VSI(%u)\n",
                                        max_tx_rate, min_tx_rate, vsi->vsi_num);
                        } else {
                                dev_err(dev, "failed to set Tx rate max %llu min %llu for VSI(%u)\n",
                                        max_tx_rate, min_tx_rate, vsi->vsi_num);
                                goto exit;
                        }
                }
                ret = ice_create_q_channels(vsi);
                if (ret) {
                        netdev_err(netdev, "failed configuring queue channels\n");
                        goto exit;
                } else {
                        netdev_dbg(netdev, "successfully configured channels\n");
                }
        }

        if (vsi->ch_rss_size)
                ice_vsi_cfg_rss_lut_key(vsi);

exit:
        /* if error, reset the all_numtc and all_enatc */
        if (ret) {
                vsi->all_numtc = 0;
                vsi->all_enatc = 0;
        }
        /* resume VSI */
        ice_ena_vsi(vsi, true);

        return ret;
}

static LIST_HEAD(ice_block_cb_list);

static int
ice_setup_tc(struct net_device *netdev, enum tc_setup_type type,
             void *type_data)
{
        struct ice_netdev_priv *np = netdev_priv(netdev);
        struct ice_pf *pf = np->vsi->back;
        bool locked = false;
        int err;

        switch (type) {
        case TC_SETUP_BLOCK:
                return flow_block_cb_setup_simple(type_data,
                                                  &ice_block_cb_list,
                                                  ice_setup_tc_block_cb,
                                                  np, np, true);
        case TC_SETUP_QDISC_MQPRIO:
                if (ice_is_eswitch_mode_switchdev(pf)) {
                        netdev_err(netdev, "TC MQPRIO offload not supported, switchdev is enabled\n");
                        return -EOPNOTSUPP;
                }

                if (pf->adev) {
                        mutex_lock(&pf->adev_mutex);
                        device_lock(&pf->adev->dev);
                        locked = true;
                        if (pf->adev->dev.driver) {
                                netdev_err(netdev, "Cannot change qdisc when RDMA is active\n");
                                err = -EBUSY;
                                goto adev_unlock;
                        }
                }

                /* setup traffic classifier for receive side */
                mutex_lock(&pf->tc_mutex);
                err = ice_setup_tc_mqprio_qdisc(netdev, type_data);
                mutex_unlock(&pf->tc_mutex);

adev_unlock:
                if (locked) {
                        device_unlock(&pf->adev->dev);
                        mutex_unlock(&pf->adev_mutex);
                }
                return err;
        default:
                return -EOPNOTSUPP;
        }
        return -EOPNOTSUPP;
}

static struct ice_indr_block_priv *
ice_indr_block_priv_lookup(struct ice_netdev_priv *np,
                           struct net_device *netdev)
{
        struct ice_indr_block_priv *cb_priv;

        list_for_each_entry(cb_priv, &np->tc_indr_block_priv_list, list) {
                if (!cb_priv->netdev)
                        return NULL;
                if (cb_priv->netdev == netdev)
                        return cb_priv;
        }
        return NULL;
}

static int
ice_indr_setup_block_cb(enum tc_setup_type type, void *type_data,
                        void *indr_priv)
{
        struct ice_indr_block_priv *priv = indr_priv;
        struct ice_netdev_priv *np = priv->np;

        switch (type) {
        case TC_SETUP_CLSFLOWER:
                return ice_setup_tc_cls_flower(np, priv->netdev,
                                               (struct flow_cls_offload *)
                                               type_data);
        default:
                return -EOPNOTSUPP;
        }
}

static int
ice_indr_setup_tc_block(struct net_device *netdev, struct Qdisc *sch,
                        struct ice_netdev_priv *np,
                        struct flow_block_offload *f, void *data,
                        void (*cleanup)(struct flow_block_cb *block_cb))
{
        struct ice_indr_block_priv *indr_priv;
        struct flow_block_cb *block_cb;

        if (!ice_is_tunnel_supported(netdev) &&
            !(is_vlan_dev(netdev) &&
              vlan_dev_real_dev(netdev) == np->vsi->netdev))
                return -EOPNOTSUPP;

        if (f->binder_type != FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS)
                return -EOPNOTSUPP;

        switch (f->command) {
        case FLOW_BLOCK_BIND:
                indr_priv = ice_indr_block_priv_lookup(np, netdev);
                if (indr_priv)
                        return -EEXIST;

                indr_priv = kzalloc(sizeof(*indr_priv), GFP_KERNEL);
                if (!indr_priv)
                        return -ENOMEM;

                indr_priv->netdev = netdev;
                indr_priv->np = np;
                list_add(&indr_priv->list, &np->tc_indr_block_priv_list);

                block_cb =
                        flow_indr_block_cb_alloc(ice_indr_setup_block_cb,
                                                 indr_priv, indr_priv,
                                                 ice_rep_indr_tc_block_unbind,
                                                 f, netdev, sch, data, np,
                                                 cleanup);

                if (IS_ERR(block_cb)) {
                        list_del(&indr_priv->list);
                        kfree(indr_priv);
                        return PTR_ERR(block_cb);
                }
                flow_block_cb_add(block_cb, f);
                list_add_tail(&block_cb->driver_list, &ice_block_cb_list);
                break;
        case FLOW_BLOCK_UNBIND:
                indr_priv = ice_indr_block_priv_lookup(np, netdev);
                if (!indr_priv)
                        return -ENOENT;

                block_cb = flow_block_cb_lookup(f->block,
                                                ice_indr_setup_block_cb,
                                                indr_priv);
                if (!block_cb)
                        return -ENOENT;

                flow_indr_block_cb_remove(block_cb, f);

                list_del(&block_cb->driver_list);
                break;
        default:
                return -EOPNOTSUPP;
        }
        return 0;
}

static int
ice_indr_setup_tc_cb(struct net_device *netdev, struct Qdisc *sch,
                     void *cb_priv, enum tc_setup_type type, void *type_data,
                     void *data,
                     void (*cleanup)(struct flow_block_cb *block_cb))
{
        switch (type) {
        case TC_SETUP_BLOCK:
                return ice_indr_setup_tc_block(netdev, sch, cb_priv, type_data,
                                               data, cleanup);

        default:
                return -EOPNOTSUPP;
        }
}

/**
 * ice_open - Called when a network interface becomes active
 * @netdev: network interface device structure
 *
 * The open entry point is called when a network interface is made
 * active by the system (IFF_UP). At this point all resources needed
 * for transmit and receive operations are allocated, the interrupt
 * handler is registered with the OS, the netdev watchdog is enabled,
 * and the stack is notified that the interface is ready.
 *
 * Returns 0 on success, negative value on failure
 */
int ice_open(struct net_device *netdev)
{
        struct ice_netdev_priv *np = netdev_priv(netdev);
        struct ice_pf *pf = np->vsi->back;

        if (ice_is_reset_in_progress(pf->state)) {
                netdev_err(netdev, "can't open net device while reset is in progress");
                return -EBUSY;
        }

        return ice_open_internal(netdev);
}

/**
 * ice_open_internal - Called when a network interface becomes active
 * @netdev: network interface device structure
 *
 * Internal ice_open implementation. Should not be used directly except for ice_open and reset
 * handling routine
 *
 * Returns 0 on success, negative value on failure
 */
int ice_open_internal(struct net_device *netdev)
{
        struct ice_netdev_priv *np = netdev_priv(netdev);
        struct ice_vsi *vsi = np->vsi;
        struct ice_pf *pf = vsi->back;
        struct ice_port_info *pi;
        int err;

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

        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;
        }

        ice_check_link_cfg_err(pf, pi->phy.link_info.link_cfg_err);

        /* Set PHY if there is media, otherwise, turn off PHY */
        if (pi->phy.link_info.link_info & ICE_AQ_MEDIA_AVAILABLE) {
                clear_bit(ICE_FLAG_NO_MEDIA, pf->flags);
                if (!test_bit(ICE_PHY_INIT_COMPLETE, pf->state)) {
                        err = ice_init_phy_user_cfg(pi);
                        if (err) {
                                netdev_err(netdev, "Failed to initialize PHY settings, error %d\n",
                                           err);
                                return err;
                        }
                }

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

        err = ice_vsi_open(vsi);
        if (err)
                netdev_err(netdev, "Failed to open VSI 0x%04X on switch 0x%04X\n",
                           vsi->vsi_num, vsi->vsw->sw_id);

        /* Update existing tunnels information */
        udp_tunnel_get_rx_info(netdev);

        return err;
}

/**
 * ice_stop - Disables a network interface
 * @netdev: network interface device structure
 *
 * The stop entry point is called when an interface is de-activated by the OS,
 * and the netdevice enters the DOWN state. The hardware is still under the
 * driver's control, but the netdev interface is disabled.
 *
 * Returns success only - not allowed to fail
 */
int ice_stop(struct net_device *netdev)
{
        struct ice_netdev_priv *np = netdev_priv(netdev);
        struct ice_vsi *vsi = np->vsi;
        struct ice_pf *pf = vsi->back;

        if (ice_is_reset_in_progress(pf->state)) {
                netdev_err(netdev, "can't stop net device while reset is in progress");
                return -EBUSY;
        }

        if (test_bit(ICE_FLAG_LINK_DOWN_ON_CLOSE_ENA, vsi->back->flags)) {
                int link_err = ice_force_phys_link_state(vsi, false);

                if (link_err) {
                        if (link_err == -ENOMEDIUM)
                                netdev_info(vsi->netdev, "Skipping link reconfig - no media attached, VSI %d\n",
                                            vsi->vsi_num);
                        else
                                netdev_err(vsi->netdev, "Failed to set physical link down, VSI %d error %d\n",
                                           vsi->vsi_num, link_err);

                        ice_vsi_close(vsi);
                        return -EIO;
                }
        }

        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)
{
        bool gso = skb_is_gso(skb);
        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 (gso && (skb_shinfo(skb)->gso_size < ICE_TXD_CTX_MIN_MSS))
                features &= ~NETIF_F_GSO_MASK;

        len = skb_network_offset(skb);
        if (len > ICE_TXD_MACLEN_MAX || len & 0x1)
                goto out_rm_features;

        len = skb_network_header_len(skb);
        if (len > ICE_TXD_IPLEN_MAX || len & 0x1)
                goto out_rm_features;

        if (skb->encapsulation) {
                /* this must work for VXLAN frames AND IPIP/SIT frames, and in
                 * the case of IPIP frames, the transport header pointer is
                 * after the inner header! So check to make sure that this
                 * is a GRE or UDP_TUNNEL frame before doing that math.
                 */
                if (gso && (skb_shinfo(skb)->gso_type &
                            (SKB_GSO_GRE | SKB_GSO_UDP_TUNNEL))) {
                        len = skb_inner_network_header(skb) -
                              skb_transport_header(skb);
                        if (len > ICE_TXD_L4LEN_MAX || len & 0x1)
                                goto out_rm_features;
                }

                len = skb_inner_network_header_len(skb);
                if (len > ICE_TXD_IPLEN_MAX || len & 0x1)
                        goto out_rm_features;
        }

        return features;
out_rm_features:
        return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
}

static const struct net_device_ops ice_netdev_safe_mode_ops = {
        .ndo_open = ice_open,
        .ndo_stop = ice_stop,
        .ndo_start_xmit = ice_start_xmit,
        .ndo_set_mac_address = ice_set_mac_address,
        .ndo_validate_addr = eth_validate_addr,
        .ndo_change_mtu = ice_change_mtu,
        .ndo_get_stats64 = ice_get_stats64,
        .ndo_tx_timeout = ice_tx_timeout,
        .ndo_bpf = ice_xdp_safe_mode,
};

static const struct net_device_ops ice_netdev_ops = {
        .ndo_open = ice_open,
        .ndo_stop = ice_stop,
        .ndo_start_xmit = ice_start_xmit,
        .ndo_select_queue = ice_select_queue,
        .ndo_features_check = ice_features_check,
        .ndo_fix_features = ice_fix_features,
        .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_eth_ioctl = ice_eth_ioctl,
        .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_set_vf_rate = ice_set_vf_bw,
        .ndo_vlan_rx_add_vid = ice_vlan_rx_add_vid,
        .ndo_vlan_rx_kill_vid = ice_vlan_rx_kill_vid,
        .ndo_setup_tc = ice_setup_tc,
        .ndo_set_features = ice_set_features,
        .ndo_bridge_getlink = ice_bridge_getlink,
        .ndo_bridge_setlink = ice_bridge_setlink,
        .ndo_fdb_add = ice_fdb_add,
        .ndo_fdb_del = ice_fdb_del,
#ifdef CONFIG_RFS_ACCEL
        .ndo_rx_flow_steer = ice_rx_flow_steer,
#endif
        .ndo_tx_timeout = ice_tx_timeout,
        .ndo_bpf = ice_xdp,
        .ndo_xdp_xmit = ice_xdp_xmit,
        .ndo_xsk_wakeup = ice_xsk_wakeup,
};