ARM: dts: lan966x: Fix the interrupt number for internal PHYs

[people/ms/linux.git] / drivers / net / ethernet / intel / ice / ice_lib.c

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

#include "ice.h"
#include "ice_base.h"
#include "ice_flow.h"
#include "ice_lib.h"
#include "ice_fltr.h"
#include "ice_dcb_lib.h"
#include "ice_devlink.h"
#include "ice_vsi_vlan_ops.h"

/**
 * ice_vsi_type_str - maps VSI type enum to string equivalents
 * @vsi_type: VSI type enum
 */
const char *ice_vsi_type_str(enum ice_vsi_type vsi_type)
{
        switch (vsi_type) {
        case ICE_VSI_PF:
                return "ICE_VSI_PF";
        case ICE_VSI_VF:
                return "ICE_VSI_VF";
        case ICE_VSI_CTRL:
                return "ICE_VSI_CTRL";
        case ICE_VSI_CHNL:
                return "ICE_VSI_CHNL";
        case ICE_VSI_LB:
                return "ICE_VSI_LB";
        case ICE_VSI_SWITCHDEV_CTRL:
                return "ICE_VSI_SWITCHDEV_CTRL";
        default:
                return "unknown";
        }
}

/**
 * ice_vsi_ctrl_all_rx_rings - Start or stop a VSI's Rx rings
 * @vsi: the VSI being configured
 * @ena: start or stop the Rx rings
 *
 * First enable/disable all of the Rx rings, flush any remaining writes, and
 * then verify that they have all been enabled/disabled successfully. This will
 * let all of the register writes complete when enabling/disabling the Rx rings
 * before waiting for the change in hardware to complete.
 */
static int ice_vsi_ctrl_all_rx_rings(struct ice_vsi *vsi, bool ena)
{
        int ret = 0;
        u16 i;

        ice_for_each_rxq(vsi, i)
                ice_vsi_ctrl_one_rx_ring(vsi, ena, i, false);

        ice_flush(&vsi->back->hw);

        ice_for_each_rxq(vsi, i) {
                ret = ice_vsi_wait_one_rx_ring(vsi, ena, i);
                if (ret)
                        break;
        }

        return ret;
}

/**
 * ice_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the VSI
 * @vsi: VSI pointer
 *
 * On error: returns error code (negative)
 * On success: returns 0
 */
static int ice_vsi_alloc_arrays(struct ice_vsi *vsi)
{
        struct ice_pf *pf = vsi->back;
        struct device *dev;

        dev = ice_pf_to_dev(pf);
        if (vsi->type == ICE_VSI_CHNL)
                return 0;

        /* allocate memory for both Tx and Rx ring pointers */
        vsi->tx_rings = devm_kcalloc(dev, vsi->alloc_txq,
                                     sizeof(*vsi->tx_rings), GFP_KERNEL);
        if (!vsi->tx_rings)
                return -ENOMEM;

        vsi->rx_rings = devm_kcalloc(dev, vsi->alloc_rxq,
                                     sizeof(*vsi->rx_rings), GFP_KERNEL);
        if (!vsi->rx_rings)
                goto err_rings;

        /* txq_map needs to have enough space to track both Tx (stack) rings
         * and XDP rings; at this point vsi->num_xdp_txq might not be set,
         * so use num_possible_cpus() as we want to always provide XDP ring
         * per CPU, regardless of queue count settings from user that might
         * have come from ethtool's set_channels() callback;
         */
        vsi->txq_map = devm_kcalloc(dev, (vsi->alloc_txq + num_possible_cpus()),
                                    sizeof(*vsi->txq_map), GFP_KERNEL);

        if (!vsi->txq_map)
                goto err_txq_map;

        vsi->rxq_map = devm_kcalloc(dev, vsi->alloc_rxq,
                                    sizeof(*vsi->rxq_map), GFP_KERNEL);
        if (!vsi->rxq_map)
                goto err_rxq_map;

        /* There is no need to allocate q_vectors for a loopback VSI. */
        if (vsi->type == ICE_VSI_LB)
                return 0;

        /* allocate memory for q_vector pointers */
        vsi->q_vectors = devm_kcalloc(dev, vsi->num_q_vectors,
                                      sizeof(*vsi->q_vectors), GFP_KERNEL);
        if (!vsi->q_vectors)
                goto err_vectors;

        vsi->af_xdp_zc_qps = bitmap_zalloc(max_t(int, vsi->alloc_txq, vsi->alloc_rxq), GFP_KERNEL);
        if (!vsi->af_xdp_zc_qps)
                goto err_zc_qps;

        return 0;

err_zc_qps:
        devm_kfree(dev, vsi->q_vectors);
err_vectors:
        devm_kfree(dev, vsi->rxq_map);
err_rxq_map:
        devm_kfree(dev, vsi->txq_map);
err_txq_map:
        devm_kfree(dev, vsi->rx_rings);
err_rings:
        devm_kfree(dev, vsi->tx_rings);
        return -ENOMEM;
}

/**
 * ice_vsi_set_num_desc - Set number of descriptors for queues on this VSI
 * @vsi: the VSI being configured
 */
static void ice_vsi_set_num_desc(struct ice_vsi *vsi)
{
        switch (vsi->type) {
        case ICE_VSI_PF:
        case ICE_VSI_SWITCHDEV_CTRL:
        case ICE_VSI_CTRL:
        case ICE_VSI_LB:
                /* a user could change the values of num_[tr]x_desc using
                 * ethtool -G so we should keep those values instead of
                 * overwriting them with the defaults.
                 */
                if (!vsi->num_rx_desc)
                        vsi->num_rx_desc = ICE_DFLT_NUM_RX_DESC;
                if (!vsi->num_tx_desc)
                        vsi->num_tx_desc = ICE_DFLT_NUM_TX_DESC;
                break;
        default:
                dev_dbg(ice_pf_to_dev(vsi->back), "Not setting number of Tx/Rx descriptors for VSI type %d\n",
                        vsi->type);
                break;
        }
}

/**
 * ice_vsi_set_num_qs - Set number of queues, descriptors and vectors for a VSI
 * @vsi: the VSI being configured
 * @vf: the VF associated with this VSI, if any
 *
 * Return 0 on success and a negative value on error
 */
static void ice_vsi_set_num_qs(struct ice_vsi *vsi, struct ice_vf *vf)
{
        enum ice_vsi_type vsi_type = vsi->type;
        struct ice_pf *pf = vsi->back;

        if (WARN_ON(vsi_type == ICE_VSI_VF && !vf))
                return;

        switch (vsi_type) {
        case ICE_VSI_PF:
                if (vsi->req_txq) {
                        vsi->alloc_txq = vsi->req_txq;
                        vsi->num_txq = vsi->req_txq;
                } else {
                        vsi->alloc_txq = min3(pf->num_lan_msix,
                                              ice_get_avail_txq_count(pf),
                                              (u16)num_online_cpus());
                }

                pf->num_lan_tx = vsi->alloc_txq;

                /* only 1 Rx queue unless RSS is enabled */
                if (!test_bit(ICE_FLAG_RSS_ENA, pf->flags)) {
                        vsi->alloc_rxq = 1;
                } else {
                        if (vsi->req_rxq) {
                                vsi->alloc_rxq = vsi->req_rxq;
                                vsi->num_rxq = vsi->req_rxq;
                        } else {
                                vsi->alloc_rxq = min3(pf->num_lan_msix,
                                                      ice_get_avail_rxq_count(pf),
                                                      (u16)num_online_cpus());
                        }
                }

                pf->num_lan_rx = vsi->alloc_rxq;

                vsi->num_q_vectors = min_t(int, pf->num_lan_msix,
                                           max_t(int, vsi->alloc_rxq,
                                                 vsi->alloc_txq));
                break;
        case ICE_VSI_SWITCHDEV_CTRL:
                /* The number of queues for ctrl VSI is equal to number of VFs.
                 * Each ring is associated to the corresponding VF_PR netdev.
                 */
                vsi->alloc_txq = ice_get_num_vfs(pf);
                vsi->alloc_rxq = vsi->alloc_txq;
                vsi->num_q_vectors = 1;
                break;
        case ICE_VSI_VF:
                if (vf->num_req_qs)
                        vf->num_vf_qs = vf->num_req_qs;
                vsi->alloc_txq = vf->num_vf_qs;
                vsi->alloc_rxq = vf->num_vf_qs;
                /* pf->vfs.num_msix_per includes (VF miscellaneous vector +
                 * data queue interrupts). Since vsi->num_q_vectors is number
                 * of queues vectors, subtract 1 (ICE_NONQ_VECS_VF) from the
                 * original vector count
                 */
                vsi->num_q_vectors = pf->vfs.num_msix_per - ICE_NONQ_VECS_VF;
                break;
        case ICE_VSI_CTRL:
                vsi->alloc_txq = 1;
                vsi->alloc_rxq = 1;
                vsi->num_q_vectors = 1;
                break;
        case ICE_VSI_CHNL:
                vsi->alloc_txq = 0;
                vsi->alloc_rxq = 0;
                break;
        case ICE_VSI_LB:
                vsi->alloc_txq = 1;
                vsi->alloc_rxq = 1;
                break;
        default:
                dev_warn(ice_pf_to_dev(pf), "Unknown VSI type %d\n", vsi_type);
                break;
        }

        ice_vsi_set_num_desc(vsi);
}

/**
 * ice_get_free_slot - get the next non-NULL location index in array
 * @array: array to search
 * @size: size of the array
 * @curr: last known occupied index to be used as a search hint
 *
 * void * is being used to keep the functionality generic. This lets us use this
 * function on any array of pointers.
 */
static int ice_get_free_slot(void *array, int size, int curr)
{
        int **tmp_array = (int **)array;
        int next;

        if (curr < (size - 1) && !tmp_array[curr + 1]) {
                next = curr + 1;
        } else {
                int i = 0;

                while ((i < size) && (tmp_array[i]))
                        i++;
                if (i == size)
                        next = ICE_NO_VSI;
                else
                        next = i;
        }
        return next;
}

/**
 * ice_vsi_delete - delete a VSI from the switch
 * @vsi: pointer to VSI being removed
 */
void ice_vsi_delete(struct ice_vsi *vsi)
{
        struct ice_pf *pf = vsi->back;
        struct ice_vsi_ctx *ctxt;
        int status;

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

        if (vsi->type == ICE_VSI_VF)
                ctxt->vf_num = vsi->vf->vf_id;
        ctxt->vsi_num = vsi->vsi_num;

        memcpy(&ctxt->info, &vsi->info, sizeof(ctxt->info));

        status = ice_free_vsi(&pf->hw, vsi->idx, ctxt, false, NULL);
        if (status)
                dev_err(ice_pf_to_dev(pf), "Failed to delete VSI %i in FW - error: %d\n",
                        vsi->vsi_num, status);

        kfree(ctxt);
}

/**
 * ice_vsi_free_arrays - De-allocate queue and vector pointer arrays for the VSI
 * @vsi: pointer to VSI being cleared
 */
static void ice_vsi_free_arrays(struct ice_vsi *vsi)
{
        struct ice_pf *pf = vsi->back;
        struct device *dev;

        dev = ice_pf_to_dev(pf);

        if (vsi->af_xdp_zc_qps) {
                bitmap_free(vsi->af_xdp_zc_qps);
                vsi->af_xdp_zc_qps = NULL;
        }
        /* free the ring and vector containers */
        if (vsi->q_vectors) {
                devm_kfree(dev, vsi->q_vectors);
                vsi->q_vectors = NULL;
        }
        if (vsi->tx_rings) {
                devm_kfree(dev, vsi->tx_rings);
                vsi->tx_rings = NULL;
        }
        if (vsi->rx_rings) {
                devm_kfree(dev, vsi->rx_rings);
                vsi->rx_rings = NULL;
        }
        if (vsi->txq_map) {
                devm_kfree(dev, vsi->txq_map);
                vsi->txq_map = NULL;
        }
        if (vsi->rxq_map) {
                devm_kfree(dev, vsi->rxq_map);
                vsi->rxq_map = NULL;
        }
}

/**
 * ice_vsi_clear - clean up and deallocate the provided VSI
 * @vsi: pointer to VSI being cleared
 *
 * This deallocates the VSI's queue resources, removes it from the PF's
 * VSI array if necessary, and deallocates the VSI
 *
 * Returns 0 on success, negative on failure
 */
int ice_vsi_clear(struct ice_vsi *vsi)
{
        struct ice_pf *pf = NULL;
        struct device *dev;

        if (!vsi)
                return 0;

        if (!vsi->back)
                return -EINVAL;

        pf = vsi->back;
        dev = ice_pf_to_dev(pf);

        if (!pf->vsi[vsi->idx] || pf->vsi[vsi->idx] != vsi) {
                dev_dbg(dev, "vsi does not exist at pf->vsi[%d]\n", vsi->idx);
                return -EINVAL;
        }

        mutex_lock(&pf->sw_mutex);
        /* updates the PF for this cleared VSI */

        pf->vsi[vsi->idx] = NULL;
        if (vsi->idx < pf->next_vsi && vsi->type != ICE_VSI_CTRL)
                pf->next_vsi = vsi->idx;
        if (vsi->idx < pf->next_vsi && vsi->type == ICE_VSI_CTRL && vsi->vf)
                pf->next_vsi = vsi->idx;

        ice_vsi_free_arrays(vsi);
        mutex_unlock(&pf->sw_mutex);
        devm_kfree(dev, vsi);

        return 0;
}

/**
 * ice_msix_clean_ctrl_vsi - MSIX mode interrupt handler for ctrl VSI
 * @irq: interrupt number
 * @data: pointer to a q_vector
 */
static irqreturn_t ice_msix_clean_ctrl_vsi(int __always_unused irq, void *data)
{
        struct ice_q_vector *q_vector = (struct ice_q_vector *)data;

        if (!q_vector->tx.tx_ring)
                return IRQ_HANDLED;

#define FDIR_RX_DESC_CLEAN_BUDGET 64
        ice_clean_rx_irq(q_vector->rx.rx_ring, FDIR_RX_DESC_CLEAN_BUDGET);
        ice_clean_ctrl_tx_irq(q_vector->tx.tx_ring);

        return IRQ_HANDLED;
}

/**
 * ice_msix_clean_rings - MSIX mode Interrupt Handler
 * @irq: interrupt number
 * @data: pointer to a q_vector
 */
static irqreturn_t ice_msix_clean_rings(int __always_unused irq, void *data)
{
        struct ice_q_vector *q_vector = (struct ice_q_vector *)data;

        if (!q_vector->tx.tx_ring && !q_vector->rx.rx_ring)
                return IRQ_HANDLED;

        q_vector->total_events++;

        napi_schedule(&q_vector->napi);

        return IRQ_HANDLED;
}

static irqreturn_t ice_eswitch_msix_clean_rings(int __always_unused irq, void *data)
{
        struct ice_q_vector *q_vector = (struct ice_q_vector *)data;
        struct ice_pf *pf = q_vector->vsi->back;
        struct ice_vf *vf;
        unsigned int bkt;

        if (!q_vector->tx.tx_ring && !q_vector->rx.rx_ring)
                return IRQ_HANDLED;

        rcu_read_lock();
        ice_for_each_vf_rcu(pf, bkt, vf)
                napi_schedule(&vf->repr->q_vector->napi);
        rcu_read_unlock();

        return IRQ_HANDLED;
}

/**
 * ice_vsi_alloc - Allocates the next available struct VSI in the PF
 * @pf: board private structure
 * @vsi_type: type of VSI
 * @ch: ptr to channel
 * @vf: VF for ICE_VSI_VF and ICE_VSI_CTRL
 *
 * The VF pointer is used for ICE_VSI_VF and ICE_VSI_CTRL. For ICE_VSI_CTRL,
 * it may be NULL in the case there is no association with a VF. For
 * ICE_VSI_VF the VF pointer *must not* be NULL.
 *
 * returns a pointer to a VSI on success, NULL on failure.
 */
static struct ice_vsi *
ice_vsi_alloc(struct ice_pf *pf, enum ice_vsi_type vsi_type,
              struct ice_channel *ch, struct ice_vf *vf)
{
        struct device *dev = ice_pf_to_dev(pf);
        struct ice_vsi *vsi = NULL;

        if (WARN_ON(vsi_type == ICE_VSI_VF && !vf))
                return NULL;

        /* Need to protect the allocation of the VSIs at the PF level */
        mutex_lock(&pf->sw_mutex);

        /* If we have already allocated our maximum number of VSIs,
         * pf->next_vsi will be ICE_NO_VSI. If not, pf->next_vsi index
         * is available to be populated
         */
        if (pf->next_vsi == ICE_NO_VSI) {
                dev_dbg(dev, "out of VSI slots!\n");
                goto unlock_pf;
        }

        vsi = devm_kzalloc(dev, sizeof(*vsi), GFP_KERNEL);
        if (!vsi)
                goto unlock_pf;

        vsi->type = vsi_type;
        vsi->back = pf;
        set_bit(ICE_VSI_DOWN, vsi->state);

        if (vsi_type == ICE_VSI_VF)
                ice_vsi_set_num_qs(vsi, vf);
        else if (vsi_type != ICE_VSI_CHNL)
                ice_vsi_set_num_qs(vsi, NULL);

        switch (vsi->type) {
        case ICE_VSI_SWITCHDEV_CTRL:
                if (ice_vsi_alloc_arrays(vsi))
                        goto err_rings;

                /* Setup eswitch MSIX irq handler for VSI */
                vsi->irq_handler = ice_eswitch_msix_clean_rings;
                break;
        case ICE_VSI_PF:
                if (ice_vsi_alloc_arrays(vsi))
                        goto err_rings;

                /* Setup default MSIX irq handler for VSI */
                vsi->irq_handler = ice_msix_clean_rings;
                break;
        case ICE_VSI_CTRL:
                if (ice_vsi_alloc_arrays(vsi))
                        goto err_rings;

                /* Setup ctrl VSI MSIX irq handler */
                vsi->irq_handler = ice_msix_clean_ctrl_vsi;

                /* For the PF control VSI this is NULL, for the VF control VSI
                 * this will be the first VF to allocate it.
                 */
                vsi->vf = vf;
                break;
        case ICE_VSI_VF:
                if (ice_vsi_alloc_arrays(vsi))
                        goto err_rings;
                vsi->vf = vf;
                break;
        case ICE_VSI_CHNL:
                if (!ch)
                        goto err_rings;
                vsi->num_rxq = ch->num_rxq;
                vsi->num_txq = ch->num_txq;
                vsi->next_base_q = ch->base_q;
                break;
        case ICE_VSI_LB:
                if (ice_vsi_alloc_arrays(vsi))
                        goto err_rings;
                break;
        default:
                dev_warn(dev, "Unknown VSI type %d\n", vsi->type);
                goto unlock_pf;
        }

        if (vsi->type == ICE_VSI_CTRL && !vf) {
                /* Use the last VSI slot as the index for PF control VSI */
                vsi->idx = pf->num_alloc_vsi - 1;
                pf->ctrl_vsi_idx = vsi->idx;
                pf->vsi[vsi->idx] = vsi;
        } else {
                /* fill slot and make note of the index */
                vsi->idx = pf->next_vsi;
                pf->vsi[pf->next_vsi] = vsi;

                /* prepare pf->next_vsi for next use */
                pf->next_vsi = ice_get_free_slot(pf->vsi, pf->num_alloc_vsi,
                                                 pf->next_vsi);
        }

        if (vsi->type == ICE_VSI_CTRL && vf)
                vf->ctrl_vsi_idx = vsi->idx;
        goto unlock_pf;

err_rings:
        devm_kfree(dev, vsi);
        vsi = NULL;
unlock_pf:
        mutex_unlock(&pf->sw_mutex);
        return vsi;
}

/**
 * ice_alloc_fd_res - Allocate FD resource for a VSI
 * @vsi: pointer to the ice_vsi
 *
 * This allocates the FD resources
 *
 * Returns 0 on success, -EPERM on no-op or -EIO on failure
 */
static int ice_alloc_fd_res(struct ice_vsi *vsi)
{
        struct ice_pf *pf = vsi->back;
        u32 g_val, b_val;

        /* Flow Director filters are only allocated/assigned to the PF VSI or
         * CHNL VSI which passes the traffic. The CTRL VSI is only used to
         * add/delete filters so resources are not allocated to it
         */
        if (!test_bit(ICE_FLAG_FD_ENA, pf->flags))
                return -EPERM;

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

        /* FD filters from guaranteed pool per VSI */
        g_val = pf->hw.func_caps.fd_fltr_guar;
        if (!g_val)
                return -EPERM;

        /* FD filters from best effort pool */
        b_val = pf->hw.func_caps.fd_fltr_best_effort;
        if (!b_val)
                return -EPERM;

        /* PF main VSI gets only 64 FD resources from guaranteed pool
         * when ADQ is configured.
         */
#define ICE_PF_VSI_GFLTR        64

        /* determine FD filter resources per VSI from shared(best effort) and
         * dedicated pool
         */
        if (vsi->type == ICE_VSI_PF) {
                vsi->num_gfltr = g_val;
                /* if MQPRIO is configured, main VSI doesn't get all FD
                 * resources from guaranteed pool. PF VSI gets 64 FD resources
                 */
                if (test_bit(ICE_FLAG_TC_MQPRIO, pf->flags)) {
                        if (g_val < ICE_PF_VSI_GFLTR)
                                return -EPERM;
                        /* allow bare minimum entries for PF VSI */
                        vsi->num_gfltr = ICE_PF_VSI_GFLTR;
                }

                /* each VSI gets same "best_effort" quota */
                vsi->num_bfltr = b_val;
        } else if (vsi->type == ICE_VSI_VF) {
                vsi->num_gfltr = 0;

                /* each VSI gets same "best_effort" quota */
                vsi->num_bfltr = b_val;
        } else {
                struct ice_vsi *main_vsi;
                int numtc;

                main_vsi = ice_get_main_vsi(pf);
                if (!main_vsi)
                        return -EPERM;

                if (!main_vsi->all_numtc)
                        return -EINVAL;

                /* figure out ADQ numtc */
                numtc = main_vsi->all_numtc - ICE_CHNL_START_TC;

                /* only one TC but still asking resources for channels,
                 * invalid config
                 */
                if (numtc < ICE_CHNL_START_TC)
                        return -EPERM;

                g_val -= ICE_PF_VSI_GFLTR;
                /* channel VSIs gets equal share from guaranteed pool */
                vsi->num_gfltr = g_val / numtc;

                /* each VSI gets same "best_effort" quota */
                vsi->num_bfltr = b_val;
        }

        return 0;
}

/**
 * ice_vsi_get_qs - Assign queues from PF to VSI
 * @vsi: the VSI to assign queues to
 *
 * Returns 0 on success and a negative value on error
 */
static int ice_vsi_get_qs(struct ice_vsi *vsi)
{
        struct ice_pf *pf = vsi->back;
        struct ice_qs_cfg tx_qs_cfg = {
                .qs_mutex = &pf->avail_q_mutex,
                .pf_map = pf->avail_txqs,
                .pf_map_size = pf->max_pf_txqs,
                .q_count = vsi->alloc_txq,
                .scatter_count = ICE_MAX_SCATTER_TXQS,
                .vsi_map = vsi->txq_map,
                .vsi_map_offset = 0,
                .mapping_mode = ICE_VSI_MAP_CONTIG
        };
        struct ice_qs_cfg rx_qs_cfg = {
                .qs_mutex = &pf->avail_q_mutex,
                .pf_map = pf->avail_rxqs,
                .pf_map_size = pf->max_pf_rxqs,
                .q_count = vsi->alloc_rxq,
                .scatter_count = ICE_MAX_SCATTER_RXQS,
                .vsi_map = vsi->rxq_map,
                .vsi_map_offset = 0,
                .mapping_mode = ICE_VSI_MAP_CONTIG
        };
        int ret;

        if (vsi->type == ICE_VSI_CHNL)
                return 0;

        ret = __ice_vsi_get_qs(&tx_qs_cfg);
        if (ret)
                return ret;
        vsi->tx_mapping_mode = tx_qs_cfg.mapping_mode;

        ret = __ice_vsi_get_qs(&rx_qs_cfg);
        if (ret)
                return ret;
        vsi->rx_mapping_mode = rx_qs_cfg.mapping_mode;

        return 0;
}

/**
 * ice_vsi_put_qs - Release queues from VSI to PF
 * @vsi: the VSI that is going to release queues
 */
static void ice_vsi_put_qs(struct ice_vsi *vsi)
{
        struct ice_pf *pf = vsi->back;
        int i;

        mutex_lock(&pf->avail_q_mutex);

        ice_for_each_alloc_txq(vsi, i) {
                clear_bit(vsi->txq_map[i], pf->avail_txqs);
                vsi->txq_map[i] = ICE_INVAL_Q_INDEX;
        }

        ice_for_each_alloc_rxq(vsi, i) {
                clear_bit(vsi->rxq_map[i], pf->avail_rxqs);
                vsi->rxq_map[i] = ICE_INVAL_Q_INDEX;
        }

        mutex_unlock(&pf->avail_q_mutex);
}

/**
 * ice_is_safe_mode
 * @pf: pointer to the PF struct
 *
 * returns true if driver is in safe mode, false otherwise
 */
bool ice_is_safe_mode(struct ice_pf *pf)
{
        return !test_bit(ICE_FLAG_ADV_FEATURES, pf->flags);
}

/**
 * ice_is_rdma_ena
 * @pf: pointer to the PF struct
 *
 * returns true if RDMA is currently supported, false otherwise
 */
bool ice_is_rdma_ena(struct ice_pf *pf)
{
        return test_bit(ICE_FLAG_RDMA_ENA, pf->flags);
}

/**
 * ice_vsi_clean_rss_flow_fld - Delete RSS configuration
 * @vsi: the VSI being cleaned up
 *
 * This function deletes RSS input set for all flows that were configured
 * for this VSI
 */
static void ice_vsi_clean_rss_flow_fld(struct ice_vsi *vsi)
{
        struct ice_pf *pf = vsi->back;
        int status;

        if (ice_is_safe_mode(pf))
                return;

        status = ice_rem_vsi_rss_cfg(&pf->hw, vsi->idx);
        if (status)
                dev_dbg(ice_pf_to_dev(pf), "ice_rem_vsi_rss_cfg failed for vsi = %d, error = %d\n",
                        vsi->vsi_num, status);
}

/**
 * ice_rss_clean - Delete RSS related VSI structures and configuration
 * @vsi: the VSI being removed
 */
static void ice_rss_clean(struct ice_vsi *vsi)
{
        struct ice_pf *pf = vsi->back;
        struct device *dev;

        dev = ice_pf_to_dev(pf);

        if (vsi->rss_hkey_user)
                devm_kfree(dev, vsi->rss_hkey_user);
        if (vsi->rss_lut_user)
                devm_kfree(dev, vsi->rss_lut_user);

        ice_vsi_clean_rss_flow_fld(vsi);
        /* remove RSS replay list */
        if (!ice_is_safe_mode(pf))
                ice_rem_vsi_rss_list(&pf->hw, vsi->idx);
}

/**
 * ice_vsi_set_rss_params - Setup RSS capabilities per VSI type
 * @vsi: the VSI being configured
 */
static void ice_vsi_set_rss_params(struct ice_vsi *vsi)
{
        struct ice_hw_common_caps *cap;
        struct ice_pf *pf = vsi->back;

        if (!test_bit(ICE_FLAG_RSS_ENA, pf->flags)) {
                vsi->rss_size = 1;
                return;
        }

        cap = &pf->hw.func_caps.common_cap;
        switch (vsi->type) {
        case ICE_VSI_CHNL:
        case ICE_VSI_PF:
                /* PF VSI will inherit RSS instance of PF */
                vsi->rss_table_size = (u16)cap->rss_table_size;
                if (vsi->type == ICE_VSI_CHNL)
                        vsi->rss_size = min_t(u16, vsi->num_rxq,
                                              BIT(cap->rss_table_entry_width));
                else
                        vsi->rss_size = min_t(u16, num_online_cpus(),
                                              BIT(cap->rss_table_entry_width));
                vsi->rss_lut_type = ICE_AQC_GSET_RSS_LUT_TABLE_TYPE_PF;
                break;
        case ICE_VSI_SWITCHDEV_CTRL:
                vsi->rss_table_size = ICE_VSIQF_HLUT_ARRAY_SIZE;
                vsi->rss_size = min_t(u16, num_online_cpus(),
                                      BIT(cap->rss_table_entry_width));
                vsi->rss_lut_type = ICE_AQC_GSET_RSS_LUT_TABLE_TYPE_VSI;
                break;
        case ICE_VSI_VF:
                /* VF VSI will get a small RSS table.
                 * For VSI_LUT, LUT size should be set to 64 bytes.
                 */
                vsi->rss_table_size = ICE_VSIQF_HLUT_ARRAY_SIZE;
                vsi->rss_size = ICE_MAX_RSS_QS_PER_VF;
                vsi->rss_lut_type = ICE_AQC_GSET_RSS_LUT_TABLE_TYPE_VSI;
                break;
        case ICE_VSI_LB:
                break;
        default:
                dev_dbg(ice_pf_to_dev(pf), "Unsupported VSI type %s\n",
                        ice_vsi_type_str(vsi->type));
                break;
        }
}

/**
 * ice_set_dflt_vsi_ctx - Set default VSI context before adding a VSI
 * @hw: HW structure used to determine the VLAN mode of the device
 * @ctxt: the VSI context being set
 *
 * This initializes a default VSI context for all sections except the Queues.
 */
static void ice_set_dflt_vsi_ctx(struct ice_hw *hw, struct ice_vsi_ctx *ctxt)
{
        u32 table = 0;

        memset(&ctxt->info, 0, sizeof(ctxt->info));
        /* VSI's should be allocated from shared pool */
        ctxt->alloc_from_pool = true;
        /* Src pruning enabled by default */
        ctxt->info.sw_flags = ICE_AQ_VSI_SW_FLAG_SRC_PRUNE;
        /* Traffic from VSI can be sent to LAN */
        ctxt->info.sw_flags2 = ICE_AQ_VSI_SW_FLAG_LAN_ENA;
        /* allow all untagged/tagged packets by default on Tx */
        ctxt->info.inner_vlan_flags = ((ICE_AQ_VSI_INNER_VLAN_TX_MODE_ALL &
                                  ICE_AQ_VSI_INNER_VLAN_TX_MODE_M) >>
                                 ICE_AQ_VSI_INNER_VLAN_TX_MODE_S);
        /* SVM - by default bits 3 and 4 in inner_vlan_flags are 0's which
         * results in legacy behavior (show VLAN, DEI, and UP) in descriptor.
         *
         * DVM - leave inner VLAN in packet by default
         */
        if (ice_is_dvm_ena(hw)) {
                ctxt->info.inner_vlan_flags |=
                        ICE_AQ_VSI_INNER_VLAN_EMODE_NOTHING;
                ctxt->info.outer_vlan_flags =
                        (ICE_AQ_VSI_OUTER_VLAN_TX_MODE_ALL <<
                         ICE_AQ_VSI_OUTER_VLAN_TX_MODE_S) &
                        ICE_AQ_VSI_OUTER_VLAN_TX_MODE_M;
                ctxt->info.outer_vlan_flags |=
                        (ICE_AQ_VSI_OUTER_TAG_VLAN_8100 <<
                         ICE_AQ_VSI_OUTER_TAG_TYPE_S) &
                        ICE_AQ_VSI_OUTER_TAG_TYPE_M;
                ctxt->info.outer_vlan_flags |=
                        FIELD_PREP(ICE_AQ_VSI_OUTER_VLAN_EMODE_M,
                                   ICE_AQ_VSI_OUTER_VLAN_EMODE_NOTHING);
        }
        /* Have 1:1 UP mapping for both ingress/egress tables */
        table |= ICE_UP_TABLE_TRANSLATE(0, 0);
        table |= ICE_UP_TABLE_TRANSLATE(1, 1);
        table |= ICE_UP_TABLE_TRANSLATE(2, 2);
        table |= ICE_UP_TABLE_TRANSLATE(3, 3);
        table |= ICE_UP_TABLE_TRANSLATE(4, 4);
        table |= ICE_UP_TABLE_TRANSLATE(5, 5);
        table |= ICE_UP_TABLE_TRANSLATE(6, 6);
        table |= ICE_UP_TABLE_TRANSLATE(7, 7);
        ctxt->info.ingress_table = cpu_to_le32(table);
        ctxt->info.egress_table = cpu_to_le32(table);
        /* Have 1:1 UP mapping for outer to inner UP table */
        ctxt->info.outer_up_table = cpu_to_le32(table);
        /* No Outer tag support outer_tag_flags remains to zero */
}

/**
 * ice_vsi_setup_q_map - Setup a VSI queue map
 * @vsi: the VSI being configured
 * @ctxt: VSI context structure
 */
static int ice_vsi_setup_q_map(struct ice_vsi *vsi, struct ice_vsi_ctx *ctxt)
{
        u16 offset = 0, qmap = 0, tx_count = 0, pow = 0;
        u16 num_txq_per_tc, num_rxq_per_tc;
        u16 qcount_tx = vsi->alloc_txq;
        u16 qcount_rx = vsi->alloc_rxq;
        u8 netdev_tc = 0;
        int i;

        if (!vsi->tc_cfg.numtc) {
                /* at least TC0 should be enabled by default */
                vsi->tc_cfg.numtc = 1;
                vsi->tc_cfg.ena_tc = 1;
        }

        num_rxq_per_tc = min_t(u16, qcount_rx / vsi->tc_cfg.numtc, ICE_MAX_RXQS_PER_TC);
        if (!num_rxq_per_tc)
                num_rxq_per_tc = 1;
        num_txq_per_tc = qcount_tx / vsi->tc_cfg.numtc;
        if (!num_txq_per_tc)
                num_txq_per_tc = 1;

        /* find the (rounded up) power-of-2 of qcount */
        pow = (u16)order_base_2(num_rxq_per_tc);

        /* TC mapping is a function of the number of Rx queues assigned to the
         * VSI for each traffic class and the offset of these queues.
         * The first 10 bits are for queue offset for TC0, next 4 bits for no:of
         * queues allocated to TC0. No:of queues is a power-of-2.
         *
         * If TC is not enabled, the queue offset is set to 0, and allocate one
         * queue, this way, traffic for the given TC will be sent to the default
         * queue.
         *
         * Setup number and offset of Rx queues for all TCs for the VSI
         */
        ice_for_each_traffic_class(i) {
                if (!(vsi->tc_cfg.ena_tc & BIT(i))) {
                        /* TC is not enabled */
                        vsi->tc_cfg.tc_info[i].qoffset = 0;
                        vsi->tc_cfg.tc_info[i].qcount_rx = 1;
                        vsi->tc_cfg.tc_info[i].qcount_tx = 1;
                        vsi->tc_cfg.tc_info[i].netdev_tc = 0;
                        ctxt->info.tc_mapping[i] = 0;
                        continue;
                }

                /* TC is enabled */
                vsi->tc_cfg.tc_info[i].qoffset = offset;
                vsi->tc_cfg.tc_info[i].qcount_rx = num_rxq_per_tc;
                vsi->tc_cfg.tc_info[i].qcount_tx = num_txq_per_tc;
                vsi->tc_cfg.tc_info[i].netdev_tc = netdev_tc++;

                qmap = ((offset << ICE_AQ_VSI_TC_Q_OFFSET_S) &
                        ICE_AQ_VSI_TC_Q_OFFSET_M) |
                        ((pow << ICE_AQ_VSI_TC_Q_NUM_S) &
                         ICE_AQ_VSI_TC_Q_NUM_M);
                offset += num_rxq_per_tc;
                tx_count += num_txq_per_tc;
                ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
        }

        /* if offset is non-zero, means it is calculated correctly based on
         * enabled TCs for a given VSI otherwise qcount_rx will always
         * be correct and non-zero because it is based off - VSI's
         * allocated Rx queues which is at least 1 (hence qcount_tx will be
         * at least 1)
         */
        if (offset)
                vsi->num_rxq = offset;
        else
                vsi->num_rxq = num_rxq_per_tc;

        if (vsi->num_rxq > vsi->alloc_rxq) {
                dev_err(ice_pf_to_dev(vsi->back), "Trying to use more Rx queues (%u), than were allocated (%u)!\n",
                        vsi->num_rxq, vsi->alloc_rxq);
                return -EINVAL;
        }

        vsi->num_txq = tx_count;
        if (vsi->num_txq > vsi->alloc_txq) {
                dev_err(ice_pf_to_dev(vsi->back), "Trying to use more Tx queues (%u), than were allocated (%u)!\n",
                        vsi->num_txq, vsi->alloc_txq);
                return -EINVAL;
        }

        if (vsi->type == ICE_VSI_VF && vsi->num_txq != vsi->num_rxq) {
                dev_dbg(ice_pf_to_dev(vsi->back), "VF VSI should have same number of Tx and Rx queues. Hence making them equal\n");
                /* since there is a chance that num_rxq could have been changed
                 * in the above for loop, make num_txq equal to num_rxq.
                 */
                vsi->num_txq = vsi->num_rxq;
        }

        /* Rx queue mapping */
        ctxt->info.mapping_flags |= cpu_to_le16(ICE_AQ_VSI_Q_MAP_CONTIG);
        /* q_mapping buffer holds the info for the first queue allocated for
         * this VSI in the PF space and also the number of queues associated
         * with this VSI.
         */
        ctxt->info.q_mapping[0] = cpu_to_le16(vsi->rxq_map[0]);
        ctxt->info.q_mapping[1] = cpu_to_le16(vsi->num_rxq);

        return 0;
}

/**
 * ice_set_fd_vsi_ctx - Set FD VSI context before adding a VSI
 * @ctxt: the VSI context being set
 * @vsi: the VSI being configured
 */
static void ice_set_fd_vsi_ctx(struct ice_vsi_ctx *ctxt, struct ice_vsi *vsi)
{
        u8 dflt_q_group, dflt_q_prio;
        u16 dflt_q, report_q, val;

        if (vsi->type != ICE_VSI_PF && vsi->type != ICE_VSI_CTRL &&
            vsi->type != ICE_VSI_VF && vsi->type != ICE_VSI_CHNL)
                return;

        val = ICE_AQ_VSI_PROP_FLOW_DIR_VALID;
        ctxt->info.valid_sections |= cpu_to_le16(val);
        dflt_q = 0;
        dflt_q_group = 0;
        report_q = 0;
        dflt_q_prio = 0;

        /* enable flow director filtering/programming */
        val = ICE_AQ_VSI_FD_ENABLE | ICE_AQ_VSI_FD_PROG_ENABLE;
        ctxt->info.fd_options = cpu_to_le16(val);
        /* max of allocated flow director filters */
        ctxt->info.max_fd_fltr_dedicated =
                        cpu_to_le16(vsi->num_gfltr);
        /* max of shared flow director filters any VSI may program */
        ctxt->info.max_fd_fltr_shared =
                        cpu_to_le16(vsi->num_bfltr);
        /* default queue index within the VSI of the default FD */
        val = ((dflt_q << ICE_AQ_VSI_FD_DEF_Q_S) &
               ICE_AQ_VSI_FD_DEF_Q_M);
        /* target queue or queue group to the FD filter */
        val |= ((dflt_q_group << ICE_AQ_VSI_FD_DEF_GRP_S) &
                ICE_AQ_VSI_FD_DEF_GRP_M);
        ctxt->info.fd_def_q = cpu_to_le16(val);
        /* queue index on which FD filter completion is reported */
        val = ((report_q << ICE_AQ_VSI_FD_REPORT_Q_S) &
               ICE_AQ_VSI_FD_REPORT_Q_M);
        /* priority of the default qindex action */
        val |= ((dflt_q_prio << ICE_AQ_VSI_FD_DEF_PRIORITY_S) &
                ICE_AQ_VSI_FD_DEF_PRIORITY_M);
        ctxt->info.fd_report_opt = cpu_to_le16(val);
}

/**
 * ice_set_rss_vsi_ctx - Set RSS VSI context before adding a VSI
 * @ctxt: the VSI context being set
 * @vsi: the VSI being configured
 */
static void ice_set_rss_vsi_ctx(struct ice_vsi_ctx *ctxt, struct ice_vsi *vsi)
{
        u8 lut_type, hash_type;
        struct device *dev;
        struct ice_pf *pf;

        pf = vsi->back;
        dev = ice_pf_to_dev(pf);

        switch (vsi->type) {
        case ICE_VSI_CHNL:
        case ICE_VSI_PF:
                /* PF VSI will inherit RSS instance of PF */
                lut_type = ICE_AQ_VSI_Q_OPT_RSS_LUT_PF;
                hash_type = ICE_AQ_VSI_Q_OPT_RSS_TPLZ;
                break;
        case ICE_VSI_VF:
                /* VF VSI will gets a small RSS table which is a VSI LUT type */
                lut_type = ICE_AQ_VSI_Q_OPT_RSS_LUT_VSI;
                hash_type = ICE_AQ_VSI_Q_OPT_RSS_TPLZ;
                break;
        default:
                dev_dbg(dev, "Unsupported VSI type %s\n",
                        ice_vsi_type_str(vsi->type));
                return;
        }

        ctxt->info.q_opt_rss = ((lut_type << ICE_AQ_VSI_Q_OPT_RSS_LUT_S) &
                                ICE_AQ_VSI_Q_OPT_RSS_LUT_M) |
                                ((hash_type << ICE_AQ_VSI_Q_OPT_RSS_HASH_S) &
                                 ICE_AQ_VSI_Q_OPT_RSS_HASH_M);
}

static void
ice_chnl_vsi_setup_q_map(struct ice_vsi *vsi, struct ice_vsi_ctx *ctxt)
{
        struct ice_pf *pf = vsi->back;
        u16 qcount, qmap;
        u8 offset = 0;
        int pow;

        qcount = min_t(int, vsi->num_rxq, pf->num_lan_msix);

        pow = order_base_2(qcount);
        qmap = ((offset << ICE_AQ_VSI_TC_Q_OFFSET_S) &
                 ICE_AQ_VSI_TC_Q_OFFSET_M) |
                 ((pow << ICE_AQ_VSI_TC_Q_NUM_S) &
                   ICE_AQ_VSI_TC_Q_NUM_M);

        ctxt->info.tc_mapping[0] = cpu_to_le16(qmap);
        ctxt->info.mapping_flags |= cpu_to_le16(ICE_AQ_VSI_Q_MAP_CONTIG);
        ctxt->info.q_mapping[0] = cpu_to_le16(vsi->next_base_q);
        ctxt->info.q_mapping[1] = cpu_to_le16(qcount);
}

/**
 * ice_vsi_init - Create and initialize a VSI
 * @vsi: the VSI being configured
 * @init_vsi: is this call creating a VSI
 *
 * This initializes a VSI context depending on the VSI type to be added and
 * passes it down to the add_vsi aq command to create a new VSI.
 */
static int ice_vsi_init(struct ice_vsi *vsi, bool init_vsi)
{
        struct ice_pf *pf = vsi->back;
        struct ice_hw *hw = &pf->hw;
        struct ice_vsi_ctx *ctxt;
        struct device *dev;
        int ret = 0;

        dev = ice_pf_to_dev(pf);
        ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL);
        if (!ctxt)
                return -ENOMEM;

        switch (vsi->type) {
        case ICE_VSI_CTRL:
        case ICE_VSI_LB:
        case ICE_VSI_PF:
                ctxt->flags = ICE_AQ_VSI_TYPE_PF;
                break;
        case ICE_VSI_SWITCHDEV_CTRL:
        case ICE_VSI_CHNL:
                ctxt->flags = ICE_AQ_VSI_TYPE_VMDQ2;
                break;
        case ICE_VSI_VF:
                ctxt->flags = ICE_AQ_VSI_TYPE_VF;
                /* VF number here is the absolute VF number (0-255) */
                ctxt->vf_num = vsi->vf->vf_id + hw->func_caps.vf_base_id;
                break;
        default:
                ret = -ENODEV;
                goto out;
        }

        /* Handle VLAN pruning for channel VSI if main VSI has VLAN
         * prune enabled
         */
        if (vsi->type == ICE_VSI_CHNL) {
                struct ice_vsi *main_vsi;

                main_vsi = ice_get_main_vsi(pf);
                if (main_vsi && ice_vsi_is_vlan_pruning_ena(main_vsi))
                        ctxt->info.sw_flags2 |=
                                ICE_AQ_VSI_SW_FLAG_RX_VLAN_PRUNE_ENA;
                else
                        ctxt->info.sw_flags2 &=
                                ~ICE_AQ_VSI_SW_FLAG_RX_VLAN_PRUNE_ENA;
        }

        ice_set_dflt_vsi_ctx(hw, ctxt);
        if (test_bit(ICE_FLAG_FD_ENA, pf->flags))
                ice_set_fd_vsi_ctx(ctxt, vsi);
        /* if the switch is in VEB mode, allow VSI loopback */
        if (vsi->vsw->bridge_mode == BRIDGE_MODE_VEB)
                ctxt->info.sw_flags |= ICE_AQ_VSI_SW_FLAG_ALLOW_LB;

        /* Set LUT type and HASH type if RSS is enabled */
        if (test_bit(ICE_FLAG_RSS_ENA, pf->flags) &&
            vsi->type != ICE_VSI_CTRL) {
                ice_set_rss_vsi_ctx(ctxt, vsi);
                /* if updating VSI context, make sure to set valid_section:
                 * to indicate which section of VSI context being updated
                 */
                if (!init_vsi)
                        ctxt->info.valid_sections |=
                                cpu_to_le16(ICE_AQ_VSI_PROP_Q_OPT_VALID);
        }

        ctxt->info.sw_id = vsi->port_info->sw_id;
        if (vsi->type == ICE_VSI_CHNL) {
                ice_chnl_vsi_setup_q_map(vsi, ctxt);
        } else {
                ret = ice_vsi_setup_q_map(vsi, ctxt);
                if (ret)
                        goto out;

                if (!init_vsi) /* means VSI being updated */
                        /* must to indicate which section of VSI context are
                         * being modified
                         */
                        ctxt->info.valid_sections |=
                                cpu_to_le16(ICE_AQ_VSI_PROP_RXQ_MAP_VALID);
        }

        /* Allow control frames out of main VSI */
        if (vsi->type == ICE_VSI_PF) {
                ctxt->info.sec_flags |= ICE_AQ_VSI_SEC_FLAG_ALLOW_DEST_OVRD;
                ctxt->info.valid_sections |=
                        cpu_to_le16(ICE_AQ_VSI_PROP_SECURITY_VALID);
        }

        if (init_vsi) {
                ret = ice_add_vsi(hw, vsi->idx, ctxt, NULL);
                if (ret) {
                        dev_err(dev, "Add VSI failed, err %d\n", ret);
                        ret = -EIO;
                        goto out;
                }
        } else {
                ret = ice_update_vsi(hw, vsi->idx, ctxt, NULL);
                if (ret) {
                        dev_err(dev, "Update VSI failed, err %d\n", ret);
                        ret = -EIO;
                        goto out;
                }
        }

        /* keep context for update VSI operations */
        vsi->info = ctxt->info;

        /* record VSI number returned */
        vsi->vsi_num = ctxt->vsi_num;

out:
        kfree(ctxt);
        return ret;
}

/**
 * ice_free_res - free a block of resources
 * @res: pointer to the resource
 * @index: starting index previously returned by ice_get_res
 * @id: identifier to track owner
 *
 * Returns number of resources freed
 */
int ice_free_res(struct ice_res_tracker *res, u16 index, u16 id)
{
        int count = 0;
        int i;

        if (!res || index >= res->end)
                return -EINVAL;

        id |= ICE_RES_VALID_BIT;
        for (i = index; i < res->end && res->list[i] == id; i++) {
                res->list[i] = 0;
                count++;
        }

        return count;
}

/**
 * ice_search_res - Search the tracker for a block of resources
 * @res: pointer to the resource
 * @needed: size of the block needed
 * @id: identifier to track owner
 *
 * Returns the base item index of the block, or -ENOMEM for error
 */
static int ice_search_res(struct ice_res_tracker *res, u16 needed, u16 id)
{
        u16 start = 0, end = 0;

        if (needed > res->end)
                return -ENOMEM;

        id |= ICE_RES_VALID_BIT;

        do {
                /* skip already allocated entries */
                if (res->list[end++] & ICE_RES_VALID_BIT) {
                        start = end;
                        if ((start + needed) > res->end)
                                break;
                }

                if (end == (start + needed)) {
                        int i = start;

                        /* there was enough, so assign it to the requestor */
                        while (i != end)
                                res->list[i++] = id;

                        return start;
                }
        } while (end < res->end);

        return -ENOMEM;
}

/**
 * ice_get_free_res_count - Get free count from a resource tracker
 * @res: Resource tracker instance
 */
static u16 ice_get_free_res_count(struct ice_res_tracker *res)
{
        u16 i, count = 0;

        for (i = 0; i < res->end; i++)
                if (!(res->list[i] & ICE_RES_VALID_BIT))
                        count++;

        return count;
}

/**
 * ice_get_res - get a block of resources
 * @pf: board private structure
 * @res: pointer to the resource
 * @needed: size of the block needed
 * @id: identifier to track owner
 *
 * Returns the base item index of the block, or negative for error
 */
int
ice_get_res(struct ice_pf *pf, struct ice_res_tracker *res, u16 needed, u16 id)
{
        if (!res || !pf)
                return -EINVAL;

        if (!needed || needed > res->num_entries || id >= ICE_RES_VALID_BIT) {
                dev_err(ice_pf_to_dev(pf), "param err: needed=%d, num_entries = %d id=0x%04x\n",
                        needed, res->num_entries, id);
                return -EINVAL;
        }

        return ice_search_res(res, needed, id);
}

/**
 * ice_get_vf_ctrl_res - Get VF control VSI resource
 * @pf: pointer to the PF structure
 * @vsi: the VSI to allocate a resource for
 *
 * Look up whether another VF has already allocated the control VSI resource.
 * If so, re-use this resource so that we share it among all VFs.
 *
 * Otherwise, allocate the resource and return it.
 */
static int ice_get_vf_ctrl_res(struct ice_pf *pf, struct ice_vsi *vsi)
{
        struct ice_vf *vf;
        unsigned int bkt;
        int base;

        rcu_read_lock();
        ice_for_each_vf_rcu(pf, bkt, vf) {
                if (vf != vsi->vf && vf->ctrl_vsi_idx != ICE_NO_VSI) {
                        base = pf->vsi[vf->ctrl_vsi_idx]->base_vector;
                        rcu_read_unlock();
                        return base;
                }
        }
        rcu_read_unlock();

        return ice_get_res(pf, pf->irq_tracker, vsi->num_q_vectors,
                           ICE_RES_VF_CTRL_VEC_ID);
}

/**
 * ice_vsi_setup_vector_base - Set up the base vector for the given VSI
 * @vsi: ptr to the VSI
 *
 * This should only be called after ice_vsi_alloc() which allocates the
 * corresponding SW VSI structure and initializes num_queue_pairs for the
 * newly allocated VSI.
 *
 * Returns 0 on success or negative on failure
 */
static int ice_vsi_setup_vector_base(struct ice_vsi *vsi)
{
        struct ice_pf *pf = vsi->back;
        struct device *dev;
        u16 num_q_vectors;
        int base;

        dev = ice_pf_to_dev(pf);
        /* SRIOV doesn't grab irq_tracker entries for each VSI */
        if (vsi->type == ICE_VSI_VF)
                return 0;
        if (vsi->type == ICE_VSI_CHNL)
                return 0;

        if (vsi->base_vector) {
                dev_dbg(dev, "VSI %d has non-zero base vector %d\n",
                        vsi->vsi_num, vsi->base_vector);
                return -EEXIST;
        }

        num_q_vectors = vsi->num_q_vectors;
        /* reserve slots from OS requested IRQs */
        if (vsi->type == ICE_VSI_CTRL && vsi->vf) {
                base = ice_get_vf_ctrl_res(pf, vsi);
        } else {
                base = ice_get_res(pf, pf->irq_tracker, num_q_vectors,
                                   vsi->idx);
        }

        if (base < 0) {
                dev_err(dev, "%d MSI-X interrupts available. %s %d failed to get %d MSI-X vectors\n",
                        ice_get_free_res_count(pf->irq_tracker),
                        ice_vsi_type_str(vsi->type), vsi->idx, num_q_vectors);
                return -ENOENT;
        }
        vsi->base_vector = (u16)base;
        pf->num_avail_sw_msix -= num_q_vectors;

        return 0;
}

/**
 * ice_vsi_clear_rings - Deallocates the Tx and Rx rings for VSI
 * @vsi: the VSI having rings deallocated
 */
static void ice_vsi_clear_rings(struct ice_vsi *vsi)
{
        int i;

        /* Avoid stale references by clearing map from vector to ring */
        if (vsi->q_vectors) {
                ice_for_each_q_vector(vsi, i) {
                        struct ice_q_vector *q_vector = vsi->q_vectors[i];

                        if (q_vector) {
                                q_vector->tx.tx_ring = NULL;
                                q_vector->rx.rx_ring = NULL;
                        }
                }
        }

        if (vsi->tx_rings) {
                ice_for_each_alloc_txq(vsi, i) {
                        if (vsi->tx_rings[i]) {
                                kfree_rcu(vsi->tx_rings[i], rcu);
                                WRITE_ONCE(vsi->tx_rings[i], NULL);
                        }
                }
        }
        if (vsi->rx_rings) {
                ice_for_each_alloc_rxq(vsi, i) {
                        if (vsi->rx_rings[i]) {
                                kfree_rcu(vsi->rx_rings[i], rcu);
                                WRITE_ONCE(vsi->rx_rings[i], NULL);
                        }
                }
        }
}

/**
 * ice_vsi_alloc_rings - Allocates Tx and Rx rings for the VSI
 * @vsi: VSI which is having rings allocated
 */
static int ice_vsi_alloc_rings(struct ice_vsi *vsi)
{
        bool dvm_ena = ice_is_dvm_ena(&vsi->back->hw);
        struct ice_pf *pf = vsi->back;
        struct device *dev;
        u16 i;

        dev = ice_pf_to_dev(pf);
        /* Allocate Tx rings */
        ice_for_each_alloc_txq(vsi, i) {
                struct ice_tx_ring *ring;

                /* allocate with kzalloc(), free with kfree_rcu() */
                ring = kzalloc(sizeof(*ring), GFP_KERNEL);

                if (!ring)
                        goto err_out;

                ring->q_index = i;
                ring->reg_idx = vsi->txq_map[i];
                ring->vsi = vsi;
                ring->tx_tstamps = &pf->ptp.port.tx;
                ring->dev = dev;
                ring->count = vsi->num_tx_desc;
                ring->txq_teid = ICE_INVAL_TEID;
                if (dvm_ena)
                        ring->flags |= ICE_TX_FLAGS_RING_VLAN_L2TAG2;
                else
                        ring->flags |= ICE_TX_FLAGS_RING_VLAN_L2TAG1;
                WRITE_ONCE(vsi->tx_rings[i], ring);
        }

        /* Allocate Rx rings */
        ice_for_each_alloc_rxq(vsi, i) {
                struct ice_rx_ring *ring;

                /* allocate with kzalloc(), free with kfree_rcu() */
                ring = kzalloc(sizeof(*ring), GFP_KERNEL);
                if (!ring)
                        goto err_out;

                ring->q_index = i;
                ring->reg_idx = vsi->rxq_map[i];
                ring->vsi = vsi;
                ring->netdev = vsi->netdev;
                ring->dev = dev;
                ring->count = vsi->num_rx_desc;
                WRITE_ONCE(vsi->rx_rings[i], ring);
        }

        return 0;

err_out:
        ice_vsi_clear_rings(vsi);
        return -ENOMEM;
}

/**
 * ice_vsi_manage_rss_lut - disable/enable RSS
 * @vsi: the VSI being changed
 * @ena: boolean value indicating if this is an enable or disable request
 *
 * In the event of disable request for RSS, this function will zero out RSS
 * LUT, while in the event of enable request for RSS, it will reconfigure RSS
 * LUT.
 */
void ice_vsi_manage_rss_lut(struct ice_vsi *vsi, bool ena)
{
        u8 *lut;

        lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
        if (!lut)
                return;

        if (ena) {
                if (vsi->rss_lut_user)
                        memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
                else
                        ice_fill_rss_lut(lut, vsi->rss_table_size,
                                         vsi->rss_size);
        }

        ice_set_rss_lut(vsi, lut, vsi->rss_table_size);
        kfree(lut);
}

/**
 * ice_vsi_cfg_rss_lut_key - Configure RSS params for a VSI
 * @vsi: VSI to be configured
 */
int ice_vsi_cfg_rss_lut_key(struct ice_vsi *vsi)
{
        struct ice_pf *pf = vsi->back;
        struct device *dev;
        u8 *lut, *key;
        int err;

        dev = ice_pf_to_dev(pf);
        if (vsi->type == ICE_VSI_PF && vsi->ch_rss_size &&
            (test_bit(ICE_FLAG_TC_MQPRIO, pf->flags))) {
                vsi->rss_size = min_t(u16, vsi->rss_size, vsi->ch_rss_size);
        } else {
                vsi->rss_size = min_t(u16, vsi->rss_size, vsi->num_rxq);

                /* If orig_rss_size is valid and it is less than determined
                 * main VSI's rss_size, update main VSI's rss_size to be
                 * orig_rss_size so that when tc-qdisc is deleted, main VSI
                 * RSS table gets programmed to be correct (whatever it was
                 * to begin with (prior to setup-tc for ADQ config)
                 */
                if (vsi->orig_rss_size && vsi->rss_size < vsi->orig_rss_size &&
                    vsi->orig_rss_size <= vsi->num_rxq) {
                        vsi->rss_size = vsi->orig_rss_size;
                        /* now orig_rss_size is used, reset it to zero */
                        vsi->orig_rss_size = 0;
                }
        }

        lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
        if (!lut)
                return -ENOMEM;

        if (vsi->rss_lut_user)
                memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
        else
                ice_fill_rss_lut(lut, vsi->rss_table_size, vsi->rss_size);

        err = ice_set_rss_lut(vsi, lut, vsi->rss_table_size);
        if (err) {
                dev_err(dev, "set_rss_lut failed, error %d\n", err);
                goto ice_vsi_cfg_rss_exit;
        }

        key = kzalloc(ICE_GET_SET_RSS_KEY_EXTEND_KEY_SIZE, GFP_KERNEL);
        if (!key) {
                err = -ENOMEM;
                goto ice_vsi_cfg_rss_exit;
        }

        if (vsi->rss_hkey_user)
                memcpy(key, vsi->rss_hkey_user, ICE_GET_SET_RSS_KEY_EXTEND_KEY_SIZE);
        else
                netdev_rss_key_fill((void *)key, ICE_GET_SET_RSS_KEY_EXTEND_KEY_SIZE);

        err = ice_set_rss_key(vsi, key);
        if (err)
                dev_err(dev, "set_rss_key failed, error %d\n", err);

        kfree(key);
ice_vsi_cfg_rss_exit:
        kfree(lut);
        return err;
}

/**
 * ice_vsi_set_vf_rss_flow_fld - Sets VF VSI RSS input set for different flows
 * @vsi: VSI to be configured
 *
 * This function will only be called during the VF VSI setup. Upon successful
 * completion of package download, this function will configure default RSS
 * input sets for VF VSI.
 */
static void ice_vsi_set_vf_rss_flow_fld(struct ice_vsi *vsi)
{
        struct ice_pf *pf = vsi->back;
        struct device *dev;
        int status;

        dev = ice_pf_to_dev(pf);
        if (ice_is_safe_mode(pf)) {
                dev_dbg(dev, "Advanced RSS disabled. Package download failed, vsi num = %d\n",
                        vsi->vsi_num);
                return;
        }

        status = ice_add_avf_rss_cfg(&pf->hw, vsi->idx, ICE_DEFAULT_RSS_HENA);
        if (status)
                dev_dbg(dev, "ice_add_avf_rss_cfg failed for vsi = %d, error = %d\n",
                        vsi->vsi_num, status);
}

/**
 * ice_vsi_set_rss_flow_fld - Sets RSS input set for different flows
 * @vsi: VSI to be configured
 *
 * This function will only be called after successful download package call
 * during initialization of PF. Since the downloaded package will erase the
 * RSS section, this function will configure RSS input sets for different
 * flow types. The last profile added has the highest priority, therefore 2
 * tuple profiles (i.e. IPv4 src/dst) are added before 4 tuple profiles
 * (i.e. IPv4 src/dst TCP src/dst port).
 */
static void ice_vsi_set_rss_flow_fld(struct ice_vsi *vsi)
{
        u16 vsi_handle = vsi->idx, vsi_num = vsi->vsi_num;
        struct ice_pf *pf = vsi->back;
        struct ice_hw *hw = &pf->hw;
        struct device *dev;
        int status;

        dev = ice_pf_to_dev(pf);
        if (ice_is_safe_mode(pf)) {
                dev_dbg(dev, "Advanced RSS disabled. Package download failed, vsi num = %d\n",
                        vsi_num);
                return;
        }
        /* configure RSS for IPv4 with input set IP src/dst */
        status = ice_add_rss_cfg(hw, vsi_handle, ICE_FLOW_HASH_IPV4,
                                 ICE_FLOW_SEG_HDR_IPV4);
        if (status)
                dev_dbg(dev, "ice_add_rss_cfg failed for ipv4 flow, vsi = %d, error = %d\n",
                        vsi_num, status);

        /* configure RSS for IPv6 with input set IPv6 src/dst */
        status = ice_add_rss_cfg(hw, vsi_handle, ICE_FLOW_HASH_IPV6,
                                 ICE_FLOW_SEG_HDR_IPV6);
        if (status)
                dev_dbg(dev, "ice_add_rss_cfg failed for ipv6 flow, vsi = %d, error = %d\n",
                        vsi_num, status);

        /* configure RSS for tcp4 with input set IP src/dst, TCP src/dst */
        status = ice_add_rss_cfg(hw, vsi_handle, ICE_HASH_TCP_IPV4,
                                 ICE_FLOW_SEG_HDR_TCP | ICE_FLOW_SEG_HDR_IPV4);
        if (status)
                dev_dbg(dev, "ice_add_rss_cfg failed for tcp4 flow, vsi = %d, error = %d\n",
                        vsi_num, status);

        /* configure RSS for udp4 with input set IP src/dst, UDP src/dst */
        status = ice_add_rss_cfg(hw, vsi_handle, ICE_HASH_UDP_IPV4,
                                 ICE_FLOW_SEG_HDR_UDP | ICE_FLOW_SEG_HDR_IPV4);
        if (status)
                dev_dbg(dev, "ice_add_rss_cfg failed for udp4 flow, vsi = %d, error = %d\n",
                        vsi_num, status);

        /* configure RSS for sctp4 with input set IP src/dst */
        status = ice_add_rss_cfg(hw, vsi_handle, ICE_FLOW_HASH_IPV4,
                                 ICE_FLOW_SEG_HDR_SCTP | ICE_FLOW_SEG_HDR_IPV4);
        if (status)
                dev_dbg(dev, "ice_add_rss_cfg failed for sctp4 flow, vsi = %d, error = %d\n",
                        vsi_num, status);

        /* configure RSS for tcp6 with input set IPv6 src/dst, TCP src/dst */
        status = ice_add_rss_cfg(hw, vsi_handle, ICE_HASH_TCP_IPV6,
                                 ICE_FLOW_SEG_HDR_TCP | ICE_FLOW_SEG_HDR_IPV6);
        if (status)
                dev_dbg(dev, "ice_add_rss_cfg failed for tcp6 flow, vsi = %d, error = %d\n",
                        vsi_num, status);

        /* configure RSS for udp6 with input set IPv6 src/dst, UDP src/dst */
        status = ice_add_rss_cfg(hw, vsi_handle, ICE_HASH_UDP_IPV6,
                                 ICE_FLOW_SEG_HDR_UDP | ICE_FLOW_SEG_HDR_IPV6);
        if (status)
                dev_dbg(dev, "ice_add_rss_cfg failed for udp6 flow, vsi = %d, error = %d\n",
                        vsi_num, status);

        /* configure RSS for sctp6 with input set IPv6 src/dst */
        status = ice_add_rss_cfg(hw, vsi_handle, ICE_FLOW_HASH_IPV6,
                                 ICE_FLOW_SEG_HDR_SCTP | ICE_FLOW_SEG_HDR_IPV6);
        if (status)
                dev_dbg(dev, "ice_add_rss_cfg failed for sctp6 flow, vsi = %d, error = %d\n",
                        vsi_num, status);

        status = ice_add_rss_cfg(hw, vsi_handle, ICE_FLOW_HASH_ESP_SPI,
                                 ICE_FLOW_SEG_HDR_ESP);
        if (status)
                dev_dbg(dev, "ice_add_rss_cfg failed for esp/spi flow, vsi = %d, error = %d\n",
                        vsi_num, status);
}

/**
 * ice_pf_state_is_nominal - checks the PF for nominal state
 * @pf: pointer to PF to check
 *
 * Check the PF's state for a collection of bits that would indicate
 * the PF is in a state that would inhibit normal operation for
 * driver functionality.
 *
 * Returns true if PF is in a nominal state, false otherwise
 */
bool ice_pf_state_is_nominal(struct ice_pf *pf)
{
        DECLARE_BITMAP(check_bits, ICE_STATE_NBITS) = { 0 };

        if (!pf)
                return false;

        bitmap_set(check_bits, 0, ICE_STATE_NOMINAL_CHECK_BITS);
        if (bitmap_intersects(pf->state, check_bits, ICE_STATE_NBITS))
                return false;

        return true;
}

/**
 * ice_update_eth_stats - Update VSI-specific ethernet statistics counters
 * @vsi: the VSI to be updated
 */
void ice_update_eth_stats(struct ice_vsi *vsi)
{
        struct ice_eth_stats *prev_es, *cur_es;
        struct ice_hw *hw = &vsi->back->hw;
        u16 vsi_num = vsi->vsi_num;    /* HW absolute index of a VSI */

        prev_es = &vsi->eth_stats_prev;
        cur_es = &vsi->eth_stats;

        ice_stat_update40(hw, GLV_GORCL(vsi_num), vsi->stat_offsets_loaded,
                          &prev_es->rx_bytes, &cur_es->rx_bytes);

        ice_stat_update40(hw, GLV_UPRCL(vsi_num), vsi->stat_offsets_loaded,
                          &prev_es->rx_unicast, &cur_es->rx_unicast);

        ice_stat_update40(hw, GLV_MPRCL(vsi_num), vsi->stat_offsets_loaded,
                          &prev_es->rx_multicast, &cur_es->rx_multicast);

        ice_stat_update40(hw, GLV_BPRCL(vsi_num), vsi->stat_offsets_loaded,
                          &prev_es->rx_broadcast, &cur_es->rx_broadcast);

        ice_stat_update32(hw, GLV_RDPC(vsi_num), vsi->stat_offsets_loaded,
                          &prev_es->rx_discards, &cur_es->rx_discards);

        ice_stat_update40(hw, GLV_GOTCL(vsi_num), vsi->stat_offsets_loaded,
                          &prev_es->tx_bytes, &cur_es->tx_bytes);

        ice_stat_update40(hw, GLV_UPTCL(vsi_num), vsi->stat_offsets_loaded,
                          &prev_es->tx_unicast, &cur_es->tx_unicast);

        ice_stat_update40(hw, GLV_MPTCL(vsi_num), vsi->stat_offsets_loaded,
                          &prev_es->tx_multicast, &cur_es->tx_multicast);

        ice_stat_update40(hw, GLV_BPTCL(vsi_num), vsi->stat_offsets_loaded,
                          &prev_es->tx_broadcast, &cur_es->tx_broadcast);

        ice_stat_update32(hw, GLV_TEPC(vsi_num), vsi->stat_offsets_loaded,
                          &prev_es->tx_errors, &cur_es->tx_errors);

        vsi->stat_offsets_loaded = true;
}

/**
 * ice_vsi_cfg_frame_size - setup max frame size and Rx buffer length
 * @vsi: VSI
 */
void ice_vsi_cfg_frame_size(struct ice_vsi *vsi)
{
        if (!vsi->netdev || test_bit(ICE_FLAG_LEGACY_RX, vsi->back->flags)) {
                vsi->max_frame = ICE_AQ_SET_MAC_FRAME_SIZE_MAX;
                vsi->rx_buf_len = ICE_RXBUF_2048;
#if (PAGE_SIZE < 8192)
        } else if (!ICE_2K_TOO_SMALL_WITH_PADDING &&
                   (vsi->netdev->mtu <= ETH_DATA_LEN)) {
                vsi->max_frame = ICE_RXBUF_1536 - NET_IP_ALIGN;
                vsi->rx_buf_len = ICE_RXBUF_1536 - NET_IP_ALIGN;
#endif
        } else {
                vsi->max_frame = ICE_AQ_SET_MAC_FRAME_SIZE_MAX;
#if (PAGE_SIZE < 8192)
                vsi->rx_buf_len = ICE_RXBUF_3072;
#else
                vsi->rx_buf_len = ICE_RXBUF_2048;
#endif
        }
}

/**
 * ice_write_qrxflxp_cntxt - write/configure QRXFLXP_CNTXT register
 * @hw: HW pointer
 * @pf_q: index of the Rx queue in the PF's queue space
 * @rxdid: flexible descriptor RXDID
 * @prio: priority for the RXDID for this queue
 * @ena_ts: true to enable timestamp and false to disable timestamp
 */
void
ice_write_qrxflxp_cntxt(struct ice_hw *hw, u16 pf_q, u32 rxdid, u32 prio,
                        bool ena_ts)
{
        int regval = rd32(hw, QRXFLXP_CNTXT(pf_q));

        /* clear any previous values */
        regval &= ~(QRXFLXP_CNTXT_RXDID_IDX_M |
                    QRXFLXP_CNTXT_RXDID_PRIO_M |
                    QRXFLXP_CNTXT_TS_M);

        regval |= (rxdid << QRXFLXP_CNTXT_RXDID_IDX_S) &
                QRXFLXP_CNTXT_RXDID_IDX_M;

        regval |= (prio << QRXFLXP_CNTXT_RXDID_PRIO_S) &
                QRXFLXP_CNTXT_RXDID_PRIO_M;

        if (ena_ts)
                /* Enable TimeSync on this queue */
                regval |= QRXFLXP_CNTXT_TS_M;

        wr32(hw, QRXFLXP_CNTXT(pf_q), regval);
}

int ice_vsi_cfg_single_rxq(struct ice_vsi *vsi, u16 q_idx)
{
        if (q_idx >= vsi->num_rxq)
                return -EINVAL;

        return ice_vsi_cfg_rxq(vsi->rx_rings[q_idx]);
}

int ice_vsi_cfg_single_txq(struct ice_vsi *vsi, struct ice_tx_ring **tx_rings, u16 q_idx)
{
        struct ice_aqc_add_tx_qgrp *qg_buf;
        int err;

        if (q_idx >= vsi->alloc_txq || !tx_rings || !tx_rings[q_idx])
                return -EINVAL;

        qg_buf = kzalloc(struct_size(qg_buf, txqs, 1), GFP_KERNEL);
        if (!qg_buf)
                return -ENOMEM;

        qg_buf->num_txqs = 1;

        err = ice_vsi_cfg_txq(vsi, tx_rings[q_idx], qg_buf);
        kfree(qg_buf);
        return err;
}

/**
 * ice_vsi_cfg_rxqs - Configure the VSI for Rx
 * @vsi: the VSI being configured
 *
 * Return 0 on success and a negative value on error
 * Configure the Rx VSI for operation.
 */
int ice_vsi_cfg_rxqs(struct ice_vsi *vsi)
{
        u16 i;

        if (vsi->type == ICE_VSI_VF)
                goto setup_rings;

        ice_vsi_cfg_frame_size(vsi);
setup_rings:
        /* set up individual rings */
        ice_for_each_rxq(vsi, i) {
                int err = ice_vsi_cfg_rxq(vsi->rx_rings[i]);

                if (err)
                        return err;
        }

        return 0;
}

/**
 * ice_vsi_cfg_txqs - Configure the VSI for Tx
 * @vsi: the VSI being configured
 * @rings: Tx ring array to be configured
 * @count: number of Tx ring array elements
 *
 * Return 0 on success and a negative value on error
 * Configure the Tx VSI for operation.
 */
static int
ice_vsi_cfg_txqs(struct ice_vsi *vsi, struct ice_tx_ring **rings, u16 count)
{
        struct ice_aqc_add_tx_qgrp *qg_buf;
        u16 q_idx = 0;
        int err = 0;

        qg_buf = kzalloc(struct_size(qg_buf, txqs, 1), GFP_KERNEL);
        if (!qg_buf)
                return -ENOMEM;

        qg_buf->num_txqs = 1;

        for (q_idx = 0; q_idx < count; q_idx++) {
                err = ice_vsi_cfg_txq(vsi, rings[q_idx], qg_buf);
                if (err)
                        goto err_cfg_txqs;
        }

err_cfg_txqs:
        kfree(qg_buf);
        return err;
}

/**
 * ice_vsi_cfg_lan_txqs - Configure the VSI for Tx
 * @vsi: the VSI being configured
 *
 * Return 0 on success and a negative value on error
 * Configure the Tx VSI for operation.
 */
int ice_vsi_cfg_lan_txqs(struct ice_vsi *vsi)
{
        return ice_vsi_cfg_txqs(vsi, vsi->tx_rings, vsi->num_txq);
}

/**
 * ice_vsi_cfg_xdp_txqs - Configure Tx queues dedicated for XDP in given VSI
 * @vsi: the VSI being configured
 *
 * Return 0 on success and a negative value on error
 * Configure the Tx queues dedicated for XDP in given VSI for operation.
 */
int ice_vsi_cfg_xdp_txqs(struct ice_vsi *vsi)
{
        int ret;
        int i;

        ret = ice_vsi_cfg_txqs(vsi, vsi->xdp_rings, vsi->num_xdp_txq);
        if (ret)
                return ret;

        ice_for_each_xdp_txq(vsi, i)
                vsi->xdp_rings[i]->xsk_pool = ice_tx_xsk_pool(vsi->xdp_rings[i]);

        return ret;
}

/**
 * ice_intrl_usec_to_reg - convert interrupt rate limit to register value
 * @intrl: interrupt rate limit in usecs
 * @gran: interrupt rate limit granularity in usecs
 *
 * This function converts a decimal interrupt rate limit in usecs to the format
 * expected by firmware.
 */
static u32 ice_intrl_usec_to_reg(u8 intrl, u8 gran)
{
        u32 val = intrl / gran;

        if (val)
                return val | GLINT_RATE_INTRL_ENA_M;
        return 0;
}

/**
 * ice_write_intrl - write throttle rate limit to interrupt specific register
 * @q_vector: pointer to interrupt specific structure
 * @intrl: throttle rate limit in microseconds to write
 */
void ice_write_intrl(struct ice_q_vector *q_vector, u8 intrl)
{
        struct ice_hw *hw = &q_vector->vsi->back->hw;

        wr32(hw, GLINT_RATE(q_vector->reg_idx),
             ice_intrl_usec_to_reg(intrl, ICE_INTRL_GRAN_ABOVE_25));
}

static struct ice_q_vector *ice_pull_qvec_from_rc(struct ice_ring_container *rc)
{
        switch (rc->type) {
        case ICE_RX_CONTAINER:
                if (rc->rx_ring)
                        return rc->rx_ring->q_vector;
                break;
        case ICE_TX_CONTAINER:
                if (rc->tx_ring)
                        return rc->tx_ring->q_vector;
                break;
        default:
                break;
        }

        return NULL;
}

/**
 * __ice_write_itr - write throttle rate to register
 * @q_vector: pointer to interrupt data structure
 * @rc: pointer to ring container
 * @itr: throttle rate in microseconds to write
 */
static void __ice_write_itr(struct ice_q_vector *q_vector,
                            struct ice_ring_container *rc, u16 itr)
{
        struct ice_hw *hw = &q_vector->vsi->back->hw;

        wr32(hw, GLINT_ITR(rc->itr_idx, q_vector->reg_idx),
             ITR_REG_ALIGN(itr) >> ICE_ITR_GRAN_S);
}

/**
 * ice_write_itr - write throttle rate to queue specific register
 * @rc: pointer to ring container
 * @itr: throttle rate in microseconds to write
 */
void ice_write_itr(struct ice_ring_container *rc, u16 itr)
{
        struct ice_q_vector *q_vector;

        q_vector = ice_pull_qvec_from_rc(rc);
        if (!q_vector)
                return;

        __ice_write_itr(q_vector, rc, itr);
}

/**
 * ice_set_q_vector_intrl - set up interrupt rate limiting
 * @q_vector: the vector to be configured
 *
 * Interrupt rate limiting is local to the vector, not per-queue so we must
 * detect if either ring container has dynamic moderation enabled to decide
 * what to set the interrupt rate limit to via INTRL settings. In the case that
 * dynamic moderation is disabled on both, write the value with the cached
 * setting to make sure INTRL register matches the user visible value.
 */
void ice_set_q_vector_intrl(struct ice_q_vector *q_vector)
{
        if (ITR_IS_DYNAMIC(&q_vector->tx) || ITR_IS_DYNAMIC(&q_vector->rx)) {
                /* in the case of dynamic enabled, cap each vector to no more
                 * than (4 us) 250,000 ints/sec, which allows low latency
                 * but still less than 500,000 interrupts per second, which
                 * reduces CPU a bit in the case of the lowest latency
                 * setting. The 4 here is a value in microseconds.
                 */
                ice_write_intrl(q_vector, 4);
        } else {
                ice_write_intrl(q_vector, q_vector->intrl);
        }
}

/**
 * ice_vsi_cfg_msix - MSIX mode Interrupt Config in the HW
 * @vsi: the VSI being configured
 *
 * This configures MSIX mode interrupts for the PF VSI, and should not be used
 * for the VF VSI.
 */
void ice_vsi_cfg_msix(struct ice_vsi *vsi)
{
        struct ice_pf *pf = vsi->back;
        struct ice_hw *hw = &pf->hw;
        u16 txq = 0, rxq = 0;
        int i, q;

        ice_for_each_q_vector(vsi, i) {
                struct ice_q_vector *q_vector = vsi->q_vectors[i];
                u16 reg_idx = q_vector->reg_idx;

                ice_cfg_itr(hw, q_vector);

                /* Both Transmit Queue Interrupt Cause Control register
                 * and Receive Queue Interrupt Cause control register
                 * expects MSIX_INDX field to be the vector index
                 * within the function space and not the absolute
                 * vector index across PF or across device.
                 * For SR-IOV VF VSIs queue vector index always starts
                 * with 1 since first vector index(0) is used for OICR
                 * in VF space. Since VMDq and other PF VSIs are within
                 * the PF function space, use the vector index that is
                 * tracked for this PF.
                 */
                for (q = 0; q < q_vector->num_ring_tx; q++) {
                        ice_cfg_txq_interrupt(vsi, txq, reg_idx,
                                              q_vector->tx.itr_idx);
                        txq++;
                }

                for (q = 0; q < q_vector->num_ring_rx; q++) {
                        ice_cfg_rxq_interrupt(vsi, rxq, reg_idx,
                                              q_vector->rx.itr_idx);
                        rxq++;
                }
        }
}

/**
 * ice_vsi_start_all_rx_rings - start/enable all of a VSI's Rx rings
 * @vsi: the VSI whose rings are to be enabled
 *
 * Returns 0 on success and a negative value on error
 */
int ice_vsi_start_all_rx_rings(struct ice_vsi *vsi)
{
        return ice_vsi_ctrl_all_rx_rings(vsi, true);
}

/**
 * ice_vsi_stop_all_rx_rings - stop/disable all of a VSI's Rx rings
 * @vsi: the VSI whose rings are to be disabled
 *
 * Returns 0 on success and a negative value on error
 */
int ice_vsi_stop_all_rx_rings(struct ice_vsi *vsi)
{
        return ice_vsi_ctrl_all_rx_rings(vsi, false);
}

/**
 * ice_vsi_stop_tx_rings - Disable Tx rings
 * @vsi: the VSI being configured
 * @rst_src: reset source
 * @rel_vmvf_num: Relative ID of VF/VM
 * @rings: Tx ring array to be stopped
 * @count: number of Tx ring array elements
 */
static int
ice_vsi_stop_tx_rings(struct ice_vsi *vsi, enum ice_disq_rst_src rst_src,
                      u16 rel_vmvf_num, struct ice_tx_ring **rings, u16 count)
{
        u16 q_idx;

        if (vsi->num_txq > ICE_LAN_TXQ_MAX_QDIS)
                return -EINVAL;

        for (q_idx = 0; q_idx < count; q_idx++) {
                struct ice_txq_meta txq_meta = { };
                int status;

                if (!rings || !rings[q_idx])
                        return -EINVAL;

                ice_fill_txq_meta(vsi, rings[q_idx], &txq_meta);
                status = ice_vsi_stop_tx_ring(vsi, rst_src, rel_vmvf_num,
                                              rings[q_idx], &txq_meta);

                if (status)
                        return status;
        }

        return 0;
}

/**
 * ice_vsi_stop_lan_tx_rings - Disable LAN Tx rings
 * @vsi: the VSI being configured
 * @rst_src: reset source
 * @rel_vmvf_num: Relative ID of VF/VM
 */
int
ice_vsi_stop_lan_tx_rings(struct ice_vsi *vsi, enum ice_disq_rst_src rst_src,
                          u16 rel_vmvf_num)
{
        return ice_vsi_stop_tx_rings(vsi, rst_src, rel_vmvf_num, vsi->tx_rings, vsi->num_txq);
}

/**
 * ice_vsi_stop_xdp_tx_rings - Disable XDP Tx rings
 * @vsi: the VSI being configured
 */
int ice_vsi_stop_xdp_tx_rings(struct ice_vsi *vsi)
{
        return ice_vsi_stop_tx_rings(vsi, ICE_NO_RESET, 0, vsi->xdp_rings, vsi->num_xdp_txq);
}

/**
 * ice_vsi_is_vlan_pruning_ena - check if VLAN pruning is enabled or not
 * @vsi: VSI to check whether or not VLAN pruning is enabled.
 *
 * returns true if Rx VLAN pruning is enabled and false otherwise.
 */
bool ice_vsi_is_vlan_pruning_ena(struct ice_vsi *vsi)
{
        if (!vsi)
                return false;

        return (vsi->info.sw_flags2 & ICE_AQ_VSI_SW_FLAG_RX_VLAN_PRUNE_ENA);
}

static void ice_vsi_set_tc_cfg(struct ice_vsi *vsi)
{
        if (!test_bit(ICE_FLAG_DCB_ENA, vsi->back->flags)) {
                vsi->tc_cfg.ena_tc = ICE_DFLT_TRAFFIC_CLASS;
                vsi->tc_cfg.numtc = 1;
                return;
        }

        /* set VSI TC information based on DCB config */
        ice_vsi_set_dcb_tc_cfg(vsi);
}

/**
 * ice_vsi_set_q_vectors_reg_idx - set the HW register index for all q_vectors
 * @vsi: VSI to set the q_vectors register index on
 */
static int
ice_vsi_set_q_vectors_reg_idx(struct ice_vsi *vsi)
{
        u16 i;

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

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

                if (!q_vector) {
                        dev_err(ice_pf_to_dev(vsi->back), "Failed to set reg_idx on q_vector %d VSI %d\n",
                                i, vsi->vsi_num);
                        goto clear_reg_idx;
                }

                if (vsi->type == ICE_VSI_VF) {
                        struct ice_vf *vf = vsi->vf;

                        q_vector->reg_idx = ice_calc_vf_reg_idx(vf, q_vector);
                } else {
                        q_vector->reg_idx =
                                q_vector->v_idx + vsi->base_vector;
                }
        }

        return 0;

clear_reg_idx:
        ice_for_each_q_vector(vsi, i) {
                struct ice_q_vector *q_vector = vsi->q_vectors[i];

                if (q_vector)
                        q_vector->reg_idx = 0;
        }

        return -EINVAL;
}

/**
 * ice_cfg_sw_lldp - Config switch rules for LLDP packet handling
 * @vsi: the VSI being configured
 * @tx: bool to determine Tx or Rx rule
 * @create: bool to determine create or remove Rule
 */
void ice_cfg_sw_lldp(struct ice_vsi *vsi, bool tx, bool create)
{
        int (*eth_fltr)(struct ice_vsi *v, u16 type, u16 flag,
                        enum ice_sw_fwd_act_type act);
        struct ice_pf *pf = vsi->back;
        struct device *dev;
        int status;

        dev = ice_pf_to_dev(pf);
        eth_fltr = create ? ice_fltr_add_eth : ice_fltr_remove_eth;

        if (tx) {
                status = eth_fltr(vsi, ETH_P_LLDP, ICE_FLTR_TX,
                                  ICE_DROP_PACKET);
        } else {
                if (ice_fw_supports_lldp_fltr_ctrl(&pf->hw)) {
                        status = ice_lldp_fltr_add_remove(&pf->hw, vsi->vsi_num,
                                                          create);
                } else {
                        status = eth_fltr(vsi, ETH_P_LLDP, ICE_FLTR_RX,
                                          ICE_FWD_TO_VSI);
                }
        }

        if (status)
                dev_dbg(dev, "Fail %s %s LLDP rule on VSI %i error: %d\n",
                        create ? "adding" : "removing", tx ? "TX" : "RX",
                        vsi->vsi_num, status);
}

/**
 * ice_set_agg_vsi - sets up scheduler aggregator node and move VSI into it
 * @vsi: pointer to the VSI
 *
 * This function will allocate new scheduler aggregator now if needed and will
 * move specified VSI into it.
 */
static void ice_set_agg_vsi(struct ice_vsi *vsi)
{
        struct device *dev = ice_pf_to_dev(vsi->back);
        struct ice_agg_node *agg_node_iter = NULL;
        u32 agg_id = ICE_INVALID_AGG_NODE_ID;
        struct ice_agg_node *agg_node = NULL;
        int node_offset, max_agg_nodes = 0;
        struct ice_port_info *port_info;
        struct ice_pf *pf = vsi->back;
        u32 agg_node_id_start = 0;
        int status;

        /* create (as needed) scheduler aggregator node and move VSI into
         * corresponding aggregator node
         * - PF aggregator node to contains VSIs of type _PF and _CTRL
         * - VF aggregator nodes will contain VF VSI
         */
        port_info = pf->hw.port_info;
        if (!port_info)
                return;

        switch (vsi->type) {
        case ICE_VSI_CTRL:
        case ICE_VSI_CHNL:
        case ICE_VSI_LB:
        case ICE_VSI_PF:
        case ICE_VSI_SWITCHDEV_CTRL:
                max_agg_nodes = ICE_MAX_PF_AGG_NODES;
                agg_node_id_start = ICE_PF_AGG_NODE_ID_START;
                agg_node_iter = &pf->pf_agg_node[0];
                break;
        case ICE_VSI_VF:
                /* user can create 'n' VFs on a given PF, but since max children
                 * per aggregator node can be only 64. Following code handles
                 * aggregator(s) for VF VSIs, either selects a agg_node which
                 * was already created provided num_vsis < 64, otherwise
                 * select next available node, which will be created
                 */
                max_agg_nodes = ICE_MAX_VF_AGG_NODES;
                agg_node_id_start = ICE_VF_AGG_NODE_ID_START;
                agg_node_iter = &pf->vf_agg_node[0];
                break;
        default:
                /* other VSI type, handle later if needed */
                dev_dbg(dev, "unexpected VSI type %s\n",
                        ice_vsi_type_str(vsi->type));
                return;
        }

        /* find the appropriate aggregator node */
        for (node_offset = 0; node_offset < max_agg_nodes; node_offset++) {
                /* see if we can find space in previously created
                 * node if num_vsis < 64, otherwise skip
                 */
                if (agg_node_iter->num_vsis &&
                    agg_node_iter->num_vsis == ICE_MAX_VSIS_IN_AGG_NODE) {
                        agg_node_iter++;
                        continue;
                }

                if (agg_node_iter->valid &&
                    agg_node_iter->agg_id != ICE_INVALID_AGG_NODE_ID) {
                        agg_id = agg_node_iter->agg_id;
                        agg_node = agg_node_iter;
                        break;
                }

                /* find unclaimed agg_id */
                if (agg_node_iter->agg_id == ICE_INVALID_AGG_NODE_ID) {
                        agg_id = node_offset + agg_node_id_start;
                        agg_node = agg_node_iter;
                        break;
                }
                /* move to next agg_node */
                agg_node_iter++;
        }

        if (!agg_node)
                return;

        /* if selected aggregator node was not created, create it */
        if (!agg_node->valid) {
                status = ice_cfg_agg(port_info, agg_id, ICE_AGG_TYPE_AGG,
                                     (u8)vsi->tc_cfg.ena_tc);
                if (status) {
                        dev_err(dev, "unable to create aggregator node with agg_id %u\n",
                                agg_id);
                        return;
                }
                /* aggregator node is created, store the needed info */
                agg_node->valid = true;
                agg_node->agg_id = agg_id;
        }

        /* move VSI to corresponding aggregator node */
        status = ice_move_vsi_to_agg(port_info, agg_id, vsi->idx,
                                     (u8)vsi->tc_cfg.ena_tc);
        if (status) {
                dev_err(dev, "unable to move VSI idx %u into aggregator %u node",
                        vsi->idx, agg_id);
                return;
        }

        /* keep active children count for aggregator node */
        agg_node->num_vsis++;

        /* cache the 'agg_id' in VSI, so that after reset - VSI will be moved
         * to aggregator node
         */
        vsi->agg_node = agg_node;
        dev_dbg(dev, "successfully moved VSI idx %u tc_bitmap 0x%x) into aggregator node %d which has num_vsis %u\n",
                vsi->idx, vsi->tc_cfg.ena_tc, vsi->agg_node->agg_id,
                vsi->agg_node->num_vsis);
}

/**
 * ice_vsi_setup - Set up a VSI by a given type
 * @pf: board private structure
 * @pi: pointer to the port_info instance
 * @vsi_type: VSI type
 * @vf: pointer to VF to which this VSI connects. This field is used primarily
 *      for the ICE_VSI_VF type. Other VSI types should pass NULL.
 * @ch: ptr to channel
 *
 * This allocates the sw VSI structure and its queue resources.
 *
 * Returns pointer to the successfully allocated and configured VSI sw struct on
 * success, NULL on failure.
 */
struct ice_vsi *
ice_vsi_setup(struct ice_pf *pf, struct ice_port_info *pi,
              enum ice_vsi_type vsi_type, struct ice_vf *vf,
              struct ice_channel *ch)
{
        u16 max_txqs[ICE_MAX_TRAFFIC_CLASS] = { 0 };
        struct device *dev = ice_pf_to_dev(pf);
        struct ice_vsi *vsi;
        int ret, i;

        if (vsi_type == ICE_VSI_CHNL)
                vsi = ice_vsi_alloc(pf, vsi_type, ch, NULL);
        else if (vsi_type == ICE_VSI_VF || vsi_type == ICE_VSI_CTRL)
                vsi = ice_vsi_alloc(pf, vsi_type, NULL, vf);
        else
                vsi = ice_vsi_alloc(pf, vsi_type, NULL, NULL);

        if (!vsi) {
                dev_err(dev, "could not allocate VSI\n");
                return NULL;
        }

        vsi->port_info = pi;
        vsi->vsw = pf->first_sw;
        if (vsi->type == ICE_VSI_PF)
                vsi->ethtype = ETH_P_PAUSE;

        ice_alloc_fd_res(vsi);

        if (vsi_type != ICE_VSI_CHNL) {
                if (ice_vsi_get_qs(vsi)) {
                        dev_err(dev, "Failed to allocate queues. vsi->idx = %d\n",
                                vsi->idx);
                        goto unroll_vsi_alloc;
                }
        }

        /* set RSS capabilities */
        ice_vsi_set_rss_params(vsi);

        /* set TC configuration */
        ice_vsi_set_tc_cfg(vsi);

        /* create the VSI */
        ret = ice_vsi_init(vsi, true);
        if (ret)
                goto unroll_get_qs;

        ice_vsi_init_vlan_ops(vsi);

        switch (vsi->type) {
        case ICE_VSI_CTRL:
        case ICE_VSI_SWITCHDEV_CTRL:
        case ICE_VSI_PF:
                ret = ice_vsi_alloc_q_vectors(vsi);
                if (ret)
                        goto unroll_vsi_init;

                ret = ice_vsi_setup_vector_base(vsi);
                if (ret)
                        goto unroll_alloc_q_vector;

                ret = ice_vsi_set_q_vectors_reg_idx(vsi);
                if (ret)
                        goto unroll_vector_base;

                ret = ice_vsi_alloc_rings(vsi);
                if (ret)
                        goto unroll_vector_base;

                ice_vsi_map_rings_to_vectors(vsi);

                /* ICE_VSI_CTRL does not need RSS so skip RSS processing */
                if (vsi->type != ICE_VSI_CTRL)
                        /* Do not exit if configuring RSS had an issue, at
                         * least receive traffic on first queue. Hence no
                         * need to capture return value
                         */
                        if (test_bit(ICE_FLAG_RSS_ENA, pf->flags)) {
                                ice_vsi_cfg_rss_lut_key(vsi);
                                ice_vsi_set_rss_flow_fld(vsi);
                        }
                ice_init_arfs(vsi);
                break;
        case ICE_VSI_CHNL:
                if (test_bit(ICE_FLAG_RSS_ENA, pf->flags)) {
                        ice_vsi_cfg_rss_lut_key(vsi);
                        ice_vsi_set_rss_flow_fld(vsi);
                }
                break;
        case ICE_VSI_VF:
                /* VF driver will take care of creating netdev for this type and
                 * map queues to vectors through Virtchnl, PF driver only
                 * creates a VSI and corresponding structures for bookkeeping
                 * purpose
                 */
                ret = ice_vsi_alloc_q_vectors(vsi);
                if (ret)
                        goto unroll_vsi_init;

                ret = ice_vsi_alloc_rings(vsi);
                if (ret)
                        goto unroll_alloc_q_vector;

                ret = ice_vsi_set_q_vectors_reg_idx(vsi);
                if (ret)
                        goto unroll_vector_base;

                /* Do not exit if configuring RSS had an issue, at least
                 * receive traffic on first queue. Hence no need to capture
                 * return value
                 */
                if (test_bit(ICE_FLAG_RSS_ENA, pf->flags)) {
                        ice_vsi_cfg_rss_lut_key(vsi);
                        ice_vsi_set_vf_rss_flow_fld(vsi);
                }
                break;
        case ICE_VSI_LB:
                ret = ice_vsi_alloc_rings(vsi);
                if (ret)
                        goto unroll_vsi_init;
                break;
        default:
                /* clean up the resources and exit */
                goto unroll_vsi_init;
        }

        /* configure VSI nodes based on number of queues and TC's */
        ice_for_each_traffic_class(i) {
                if (!(vsi->tc_cfg.ena_tc & BIT(i)))
                        continue;

                if (vsi->type == ICE_VSI_CHNL) {
                        if (!vsi->alloc_txq && vsi->num_txq)
                                max_txqs[i] = vsi->num_txq;
                        else
                                max_txqs[i] = pf->num_lan_tx;
                } else {
                        max_txqs[i] = vsi->alloc_txq;
                }
        }

        dev_dbg(dev, "vsi->tc_cfg.ena_tc = %d\n", vsi->tc_cfg.ena_tc);
        ret = ice_cfg_vsi_lan(vsi->port_info, vsi->idx, vsi->tc_cfg.ena_tc,
                              max_txqs);
        if (ret) {
                dev_err(dev, "VSI %d failed lan queue config, error %d\n",
                        vsi->vsi_num, ret);
                goto unroll_clear_rings;
        }

        /* Add switch rule to drop all Tx Flow Control Frames, of look up
         * type ETHERTYPE from VSIs, and restrict malicious VF from sending
         * out PAUSE or PFC frames. If enabled, FW can still send FC frames.
         * The rule is added once for PF VSI in order to create appropriate
         * recipe, since VSI/VSI list is ignored with drop action...
         * Also add rules to handle LLDP Tx packets.  Tx LLDP packets need to
         * be dropped so that VFs cannot send LLDP packets to reconfig DCB
         * settings in the HW.
         */
        if (!ice_is_safe_mode(pf))
                if (vsi->type == ICE_VSI_PF) {
                        ice_fltr_add_eth(vsi, ETH_P_PAUSE, ICE_FLTR_TX,
                                         ICE_DROP_PACKET);
                        ice_cfg_sw_lldp(vsi, true, true);
                }

        if (!vsi->agg_node)
                ice_set_agg_vsi(vsi);
        return vsi;

unroll_clear_rings:
        ice_vsi_clear_rings(vsi);
unroll_vector_base:
        /* reclaim SW interrupts back to the common pool */
        ice_free_res(pf->irq_tracker, vsi->base_vector, vsi->idx);
        pf->num_avail_sw_msix += vsi->num_q_vectors;
unroll_alloc_q_vector:
        ice_vsi_free_q_vectors(vsi);
unroll_vsi_init:
        ice_vsi_delete(vsi);
unroll_get_qs:
        ice_vsi_put_qs(vsi);
unroll_vsi_alloc:
        if (vsi_type == ICE_VSI_VF)
                ice_enable_lag(pf->lag);
        ice_vsi_clear(vsi);

        return NULL;
}

/**
 * ice_vsi_release_msix - Clear the queue to Interrupt mapping in HW
 * @vsi: the VSI being cleaned up
 */
static void ice_vsi_release_msix(struct ice_vsi *vsi)
{
        struct ice_pf *pf = vsi->back;
        struct ice_hw *hw = &pf->hw;
        u32 txq = 0;
        u32 rxq = 0;
        int i, q;

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

                ice_write_intrl(q_vector, 0);
                for (q = 0; q < q_vector->num_ring_tx; q++) {
                        ice_write_itr(&q_vector->tx, 0);
                        wr32(hw, QINT_TQCTL(vsi->txq_map[txq]), 0);
                        if (ice_is_xdp_ena_vsi(vsi)) {
                                u32 xdp_txq = txq + vsi->num_xdp_txq;

                                wr32(hw, QINT_TQCTL(vsi->txq_map[xdp_txq]), 0);
                        }
                        txq++;
                }

                for (q = 0; q < q_vector->num_ring_rx; q++) {
                        ice_write_itr(&q_vector->rx, 0);
                        wr32(hw, QINT_RQCTL(vsi->rxq_map[rxq]), 0);
                        rxq++;
                }
        }

        ice_flush(hw);
}

/**
 * ice_vsi_free_irq - Free the IRQ association with the OS
 * @vsi: the VSI being configured
 */
void ice_vsi_free_irq(struct ice_vsi *vsi)
{
        struct ice_pf *pf = vsi->back;
        int base = vsi->base_vector;
        int i;

        if (!vsi->q_vectors || !vsi->irqs_ready)
                return;

        ice_vsi_release_msix(vsi);
        if (vsi->type == ICE_VSI_VF)
                return;

        vsi->irqs_ready = false;
        ice_free_cpu_rx_rmap(vsi);

        ice_for_each_q_vector(vsi, i) {
                u16 vector = i + base;
                int irq_num;

                irq_num = pf->msix_entries[vector].vector;

                /* free only the irqs that were actually requested */
                if (!vsi->q_vectors[i] ||
                    !(vsi->q_vectors[i]->num_ring_tx ||
                      vsi->q_vectors[i]->num_ring_rx))
                        continue;

                /* clear the affinity notifier in the IRQ descriptor */
                if (!IS_ENABLED(CONFIG_RFS_ACCEL))
                        irq_set_affinity_notifier(irq_num, NULL);

                /* clear the affinity_mask in the IRQ descriptor */
                irq_set_affinity_hint(irq_num, NULL);
                synchronize_irq(irq_num);
                devm_free_irq(ice_pf_to_dev(pf), irq_num, vsi->q_vectors[i]);
        }
}

/**
 * ice_vsi_free_tx_rings - Free Tx resources for VSI queues
 * @vsi: the VSI having resources freed
 */
void ice_vsi_free_tx_rings(struct ice_vsi *vsi)
{
        int i;

        if (!vsi->tx_rings)
                return;

        ice_for_each_txq(vsi, i)
                if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
                        ice_free_tx_ring(vsi->tx_rings[i]);
}

/**
 * ice_vsi_free_rx_rings - Free Rx resources for VSI queues
 * @vsi: the VSI having resources freed
 */
void ice_vsi_free_rx_rings(struct ice_vsi *vsi)
{
        int i;

        if (!vsi->rx_rings)
                return;

        ice_for_each_rxq(vsi, i)
                if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
                        ice_free_rx_ring(vsi->rx_rings[i]);
}

/**
 * ice_vsi_close - Shut down a VSI
 * @vsi: the VSI being shut down
 */
void ice_vsi_close(struct ice_vsi *vsi)
{
        if (!test_and_set_bit(ICE_VSI_DOWN, vsi->state))
                ice_down(vsi);

        ice_vsi_free_irq(vsi);
        ice_vsi_free_tx_rings(vsi);
        ice_vsi_free_rx_rings(vsi);
}

/**
 * ice_ena_vsi - resume a VSI
 * @vsi: the VSI being resume
 * @locked: is the rtnl_lock already held
 */
int ice_ena_vsi(struct ice_vsi *vsi, bool locked)
{
        int err = 0;

        if (!test_bit(ICE_VSI_NEEDS_RESTART, vsi->state))
                return 0;

        clear_bit(ICE_VSI_NEEDS_RESTART, vsi->state);

        if (vsi->netdev && vsi->type == ICE_VSI_PF) {
                if (netif_running(vsi->netdev)) {
                        if (!locked)
                                rtnl_lock();

                        err = ice_open_internal(vsi->netdev);

                        if (!locked)
                                rtnl_unlock();
                }
        } else if (vsi->type == ICE_VSI_CTRL) {
                err = ice_vsi_open_ctrl(vsi);
        }

        return err;
}

/**
 * ice_dis_vsi - pause a VSI
 * @vsi: the VSI being paused
 * @locked: is the rtnl_lock already held
 */
void ice_dis_vsi(struct ice_vsi *vsi, bool locked)
{
        if (test_bit(ICE_VSI_DOWN, vsi->state))
                return;

        set_bit(ICE_VSI_NEEDS_RESTART, vsi->state);

        if (vsi->type == ICE_VSI_PF && vsi->netdev) {
                if (netif_running(vsi->netdev)) {
                        if (!locked)
                                rtnl_lock();

                        ice_vsi_close(vsi);

                        if (!locked)
                                rtnl_unlock();
                } else {
                        ice_vsi_close(vsi);
                }
        } else if (vsi->type == ICE_VSI_CTRL ||
                   vsi->type == ICE_VSI_SWITCHDEV_CTRL) {
                ice_vsi_close(vsi);
        }
}

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

        /* disable interrupt causation from each queue */
        if (vsi->tx_rings) {
                ice_for_each_txq(vsi, i) {
                        if (vsi->tx_rings[i]) {
                                u16 reg;

                                reg = vsi->tx_rings[i]->reg_idx;
                                val = rd32(hw, QINT_TQCTL(reg));
                                val &= ~QINT_TQCTL_CAUSE_ENA_M;
                                wr32(hw, QINT_TQCTL(reg), val);
                        }
                }
        }

        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(pf->msix_entries[i + base].vector);
}

/**
 * ice_napi_del - Remove NAPI handler for the VSI
 * @vsi: VSI for which NAPI handler is to be removed
 */
void ice_napi_del(struct ice_vsi *vsi)
{
        int v_idx;

        if (!vsi->netdev)
                return;

        ice_for_each_q_vector(vsi, v_idx)
                netif_napi_del(&vsi->q_vectors[v_idx]->napi);
}

/**
 * ice_free_vf_ctrl_res - Free the VF control VSI resource
 * @pf: pointer to PF structure
 * @vsi: the VSI to free resources for
 *
 * Check if the VF control VSI resource is still in use. If no VF is using it
 * any more, release the VSI resource. Otherwise, leave it to be cleaned up
 * once no other VF uses it.
 */
static void ice_free_vf_ctrl_res(struct ice_pf *pf,  struct ice_vsi *vsi)
{
        struct ice_vf *vf;
        unsigned int bkt;

        rcu_read_lock();
        ice_for_each_vf_rcu(pf, bkt, vf) {
                if (vf != vsi->vf && vf->ctrl_vsi_idx != ICE_NO_VSI) {
                        rcu_read_unlock();
                        return;
                }
        }
        rcu_read_unlock();

        /* No other VFs left that have control VSI. It is now safe to reclaim
         * SW interrupts back to the common pool.
         */
        ice_free_res(pf->irq_tracker, vsi->base_vector,
                     ICE_RES_VF_CTRL_VEC_ID);
        pf->num_avail_sw_msix += vsi->num_q_vectors;
}

/**
 * ice_vsi_release - Delete a VSI and free its resources
 * @vsi: the VSI being removed
 *
 * Returns 0 on success or < 0 on error
 */
int ice_vsi_release(struct ice_vsi *vsi)
{
        struct ice_pf *pf;
        int err;

        if (!vsi->back)
                return -ENODEV;
        pf = vsi->back;

        /* do not unregister while driver is in the reset recovery pending
         * state. Since reset/rebuild happens through PF service task workqueue,
         * it's not a good idea to unregister netdev that is associated to the
         * PF that is running the work queue items currently. This is done to
         * avoid check_flush_dependency() warning on this wq
         */
        if (vsi->netdev && !ice_is_reset_in_progress(pf->state) &&
            (test_bit(ICE_VSI_NETDEV_REGISTERED, vsi->state))) {
                unregister_netdev(vsi->netdev);
                clear_bit(ICE_VSI_NETDEV_REGISTERED, vsi->state);
        }

        if (vsi->type == ICE_VSI_PF)
                ice_devlink_destroy_pf_port(pf);

        if (test_bit(ICE_FLAG_RSS_ENA, pf->flags))
                ice_rss_clean(vsi);

        /* Disable VSI and free resources */
        if (vsi->type != ICE_VSI_LB)
                ice_vsi_dis_irq(vsi);
        ice_vsi_close(vsi);

        /* SR-IOV determines needed MSIX resources all at once instead of per
         * VSI since when VFs are spawned we know how many VFs there are and how
         * many interrupts each VF needs. SR-IOV MSIX resources are also
         * cleared in the same manner.
         */
        if (vsi->type == ICE_VSI_CTRL && vsi->vf) {
                ice_free_vf_ctrl_res(pf, vsi);
        } else if (vsi->type != ICE_VSI_VF) {
                /* reclaim SW interrupts back to the common pool */
                ice_free_res(pf->irq_tracker, vsi->base_vector, vsi->idx);
                pf->num_avail_sw_msix += vsi->num_q_vectors;
        }

        if (!ice_is_safe_mode(pf)) {
                if (vsi->type == ICE_VSI_PF) {
                        ice_fltr_remove_eth(vsi, ETH_P_PAUSE, ICE_FLTR_TX,
                                            ICE_DROP_PACKET);
                        ice_cfg_sw_lldp(vsi, true, false);
                        /* The Rx rule will only exist to remove if the LLDP FW
                         * engine is currently stopped
                         */
                        if (!test_bit(ICE_FLAG_FW_LLDP_AGENT, pf->flags))
                                ice_cfg_sw_lldp(vsi, false, false);
                }
        }

        if (ice_is_vsi_dflt_vsi(vsi))
                ice_clear_dflt_vsi(vsi);
        ice_fltr_remove_all(vsi);
        ice_rm_vsi_lan_cfg(vsi->port_info, vsi->idx);
        err = ice_rm_vsi_rdma_cfg(vsi->port_info, vsi->idx);
        if (err)
                dev_err(ice_pf_to_dev(vsi->back), "Failed to remove RDMA scheduler config for VSI %u, err %d\n",
                        vsi->vsi_num, err);
        ice_vsi_delete(vsi);
        ice_vsi_free_q_vectors(vsi);

        if (vsi->netdev) {
                if (test_bit(ICE_VSI_NETDEV_REGISTERED, vsi->state)) {
                        unregister_netdev(vsi->netdev);
                        clear_bit(ICE_VSI_NETDEV_REGISTERED, vsi->state);
                }
                if (test_bit(ICE_VSI_NETDEV_ALLOCD, vsi->state)) {
                        free_netdev(vsi->netdev);
                        vsi->netdev = NULL;
                        clear_bit(ICE_VSI_NETDEV_ALLOCD, vsi->state);
                }
        }

        if (vsi->type == ICE_VSI_VF &&
            vsi->agg_node && vsi->agg_node->valid)
                vsi->agg_node->num_vsis--;
        ice_vsi_clear_rings(vsi);

        ice_vsi_put_qs(vsi);

        /* retain SW VSI data structure since it is needed to unregister and
         * free VSI netdev when PF is not in reset recovery pending state,\
         * for ex: during rmmod.
         */
        if (!ice_is_reset_in_progress(pf->state))
                ice_vsi_clear(vsi);

        return 0;
}

/**
 * ice_vsi_rebuild_get_coalesce - get coalesce from all q_vectors
 * @vsi: VSI connected with q_vectors
 * @coalesce: array of struct with stored coalesce
 *
 * Returns array size.
 */
static int
ice_vsi_rebuild_get_coalesce(struct ice_vsi *vsi,
                             struct ice_coalesce_stored *coalesce)
{
        int i;

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

                coalesce[i].itr_tx = q_vector->tx.itr_settings;
                coalesce[i].itr_rx = q_vector->rx.itr_settings;
                coalesce[i].intrl = q_vector->intrl;

                if (i < vsi->num_txq)
                        coalesce[i].tx_valid = true;
                if (i < vsi->num_rxq)
                        coalesce[i].rx_valid = true;
        }

        return vsi->num_q_vectors;
}

/**
 * ice_vsi_rebuild_set_coalesce - set coalesce from earlier saved arrays
 * @vsi: VSI connected with q_vectors
 * @coalesce: pointer to array of struct with stored coalesce
 * @size: size of coalesce array
 *
 * Before this function, ice_vsi_rebuild_get_coalesce should be called to save
 * ITR params in arrays. If size is 0 or coalesce wasn't stored set coalesce
 * to default value.
 */
static void
ice_vsi_rebuild_set_coalesce(struct ice_vsi *vsi,
                             struct ice_coalesce_stored *coalesce, int size)
{
        struct ice_ring_container *rc;
        int i;

        if ((size && !coalesce) || !vsi)
                return;

        /* There are a couple of cases that have to be handled here:
         *   1. The case where the number of queue vectors stays the same, but
         *      the number of Tx or Rx rings changes (the first for loop)
         *   2. The case where the number of queue vectors increased (the
         *      second for loop)
         */
        for (i = 0; i < size && i < vsi->num_q_vectors; i++) {
                /* There are 2 cases to handle here and they are the same for
                 * both Tx and Rx:
                 *   if the entry was valid previously (coalesce[i].[tr]x_valid
                 *   and the loop variable is less than the number of rings
                 *   allocated, then write the previous values
                 *
                 *   if the entry was not valid previously, but the number of
                 *   rings is less than are allocated (this means the number of
                 *   rings increased from previously), then write out the
                 *   values in the first element
                 *
                 *   Also, always write the ITR, even if in ITR_IS_DYNAMIC
                 *   as there is no harm because the dynamic algorithm
                 *   will just overwrite.
                 */
                if (i < vsi->alloc_rxq && coalesce[i].rx_valid) {
                        rc = &vsi->q_vectors[i]->rx;
                        rc->itr_settings = coalesce[i].itr_rx;
                        ice_write_itr(rc, rc->itr_setting);
                } else if (i < vsi->alloc_rxq) {
                        rc = &vsi->q_vectors[i]->rx;
                        rc->itr_settings = coalesce[0].itr_rx;
                        ice_write_itr(rc, rc->itr_setting);
                }

                if (i < vsi->alloc_txq && coalesce[i].tx_valid) {
                        rc = &vsi->q_vectors[i]->tx;
                        rc->itr_settings = coalesce[i].itr_tx;
                        ice_write_itr(rc, rc->itr_setting);
                } else if (i < vsi->alloc_txq) {
                        rc = &vsi->q_vectors[i]->tx;
                        rc->itr_settings = coalesce[0].itr_tx;
                        ice_write_itr(rc, rc->itr_setting);
                }

                vsi->q_vectors[i]->intrl = coalesce[i].intrl;
                ice_set_q_vector_intrl(vsi->q_vectors[i]);
        }

        /* the number of queue vectors increased so write whatever is in
         * the first element
         */
        for (; i < vsi->num_q_vectors; i++) {
                /* transmit */
                rc = &vsi->q_vectors[i]->tx;
                rc->itr_settings = coalesce[0].itr_tx;
                ice_write_itr(rc, rc->itr_setting);

                /* receive */
                rc = &vsi->q_vectors[i]->rx;
                rc->itr_settings = coalesce[0].itr_rx;
                ice_write_itr(rc, rc->itr_setting);

                vsi->q_vectors[i]->intrl = coalesce[0].intrl;
                ice_set_q_vector_intrl(vsi->q_vectors[i]);
        }
}

/**
 * ice_vsi_rebuild - Rebuild VSI after reset
 * @vsi: VSI to be rebuild
 * @init_vsi: is this an initialization or a reconfigure of the VSI
 *
 * Returns 0 on success and negative value on failure
 */
int ice_vsi_rebuild(struct ice_vsi *vsi, bool init_vsi)
{
        u16 max_txqs[ICE_MAX_TRAFFIC_CLASS] = { 0 };
        struct ice_coalesce_stored *coalesce;
        int prev_num_q_vectors = 0;
        enum ice_vsi_type vtype;
        struct ice_pf *pf;
        int ret, i;

        if (!vsi)
                return -EINVAL;

        pf = vsi->back;
        vtype = vsi->type;
        if (WARN_ON(vtype == ICE_VSI_VF) && !vsi->vf)
                return -EINVAL;

        ice_vsi_init_vlan_ops(vsi);

        coalesce = kcalloc(vsi->num_q_vectors,
                           sizeof(struct ice_coalesce_stored), GFP_KERNEL);
        if (!coalesce)
                return -ENOMEM;

        prev_num_q_vectors = ice_vsi_rebuild_get_coalesce(vsi, coalesce);

        ice_rm_vsi_lan_cfg(vsi->port_info, vsi->idx);
        ret = ice_rm_vsi_rdma_cfg(vsi->port_info, vsi->idx);
        if (ret)
                dev_err(ice_pf_to_dev(vsi->back), "Failed to remove RDMA scheduler config for VSI %u, err %d\n",
                        vsi->vsi_num, ret);
        ice_vsi_free_q_vectors(vsi);

        /* SR-IOV determines needed MSIX resources all at once instead of per
         * VSI since when VFs are spawned we know how many VFs there are and how
         * many interrupts each VF needs. SR-IOV MSIX resources are also
         * cleared in the same manner.
         */
        if (vtype != ICE_VSI_VF) {
                /* reclaim SW interrupts back to the common pool */
                ice_free_res(pf->irq_tracker, vsi->base_vector, vsi->idx);
                pf->num_avail_sw_msix += vsi->num_q_vectors;
                vsi->base_vector = 0;
        }

        if (ice_is_xdp_ena_vsi(vsi))
                /* return value check can be skipped here, it always returns
                 * 0 if reset is in progress
                 */
                ice_destroy_xdp_rings(vsi);
        ice_vsi_put_qs(vsi);
        ice_vsi_clear_rings(vsi);
        ice_vsi_free_arrays(vsi);
        if (vtype == ICE_VSI_VF)
                ice_vsi_set_num_qs(vsi, vsi->vf);
        else
                ice_vsi_set_num_qs(vsi, NULL);

        ret = ice_vsi_alloc_arrays(vsi);
        if (ret < 0)
                goto err_vsi;

        ice_vsi_get_qs(vsi);

        ice_alloc_fd_res(vsi);
        ice_vsi_set_tc_cfg(vsi);

        /* Initialize VSI struct elements and create VSI in FW */
        ret = ice_vsi_init(vsi, init_vsi);
        if (ret < 0)
                goto err_vsi;

        switch (vtype) {
        case ICE_VSI_CTRL:
        case ICE_VSI_SWITCHDEV_CTRL:
        case ICE_VSI_PF:
                ret = ice_vsi_alloc_q_vectors(vsi);
                if (ret)
                        goto err_rings;

                ret = ice_vsi_setup_vector_base(vsi);
                if (ret)
                        goto err_vectors;

                ret = ice_vsi_set_q_vectors_reg_idx(vsi);
                if (ret)
                        goto err_vectors;

                ret = ice_vsi_alloc_rings(vsi);
                if (ret)
                        goto err_vectors;

                ice_vsi_map_rings_to_vectors(vsi);
                if (ice_is_xdp_ena_vsi(vsi)) {
                        ret = ice_vsi_determine_xdp_res(vsi);
                        if (ret)
                                goto err_vectors;
                        ret = ice_prepare_xdp_rings(vsi, vsi->xdp_prog);
                        if (ret)
                                goto err_vectors;
                }
                /* ICE_VSI_CTRL does not need RSS so skip RSS processing */
                if (vtype != ICE_VSI_CTRL)
                        /* Do not exit if configuring RSS had an issue, at
                         * least receive traffic on first queue. Hence no
                         * need to capture return value
                         */
                        if (test_bit(ICE_FLAG_RSS_ENA, pf->flags))
                                ice_vsi_cfg_rss_lut_key(vsi);
                break;
        case ICE_VSI_VF:
                ret = ice_vsi_alloc_q_vectors(vsi);
                if (ret)
                        goto err_rings;

                ret = ice_vsi_set_q_vectors_reg_idx(vsi);
                if (ret)
                        goto err_vectors;

                ret = ice_vsi_alloc_rings(vsi);
                if (ret)
                        goto err_vectors;

                break;
        case ICE_VSI_CHNL:
                if (test_bit(ICE_FLAG_RSS_ENA, pf->flags)) {
                        ice_vsi_cfg_rss_lut_key(vsi);
                        ice_vsi_set_rss_flow_fld(vsi);
                }
                break;
        default:
                break;
        }

        /* configure VSI nodes based on number of queues and TC's */
        for (i = 0; i < vsi->tc_cfg.numtc; i++) {
                /* configure VSI nodes based on number of queues and TC's.
                 * ADQ creates VSIs for each TC/Channel but doesn't
                 * allocate queues instead it reconfigures the PF queues
                 * as per the TC command. So max_txqs should point to the
                 * PF Tx queues.
                 */
                if (vtype == ICE_VSI_CHNL)
                        max_txqs[i] = pf->num_lan_tx;
                else
                        max_txqs[i] = vsi->alloc_txq;

                if (ice_is_xdp_ena_vsi(vsi))
                        max_txqs[i] += vsi->num_xdp_txq;
        }

        if (test_bit(ICE_FLAG_TC_MQPRIO, pf->flags))
                /* If MQPRIO is set, means channel code path, hence for main
                 * VSI's, use TC as 1
                 */
                ret = ice_cfg_vsi_lan(vsi->port_info, vsi->idx, 1, max_txqs);
        else
                ret = ice_cfg_vsi_lan(vsi->port_info, vsi->idx,
                                      vsi->tc_cfg.ena_tc, max_txqs);

        if (ret) {
                dev_err(ice_pf_to_dev(pf), "VSI %d failed lan queue config, error %d\n",
                        vsi->vsi_num, ret);
                if (init_vsi) {
                        ret = -EIO;
                        goto err_vectors;
                } else {
                        return ice_schedule_reset(pf, ICE_RESET_PFR);
                }
        }
        ice_vsi_rebuild_set_coalesce(vsi, coalesce, prev_num_q_vectors);
        kfree(coalesce);

        return 0;

err_vectors:
        ice_vsi_free_q_vectors(vsi);
err_rings:
        if (vsi->netdev) {
                vsi->current_netdev_flags = 0;
                unregister_netdev(vsi->netdev);
                free_netdev(vsi->netdev);
                vsi->netdev = NULL;
        }
err_vsi:
        ice_vsi_clear(vsi);
        set_bit(ICE_RESET_FAILED, pf->state);
        kfree(coalesce);
        return ret;
}

/**
 * ice_is_reset_in_progress - check for a reset in progress
 * @state: PF state field
 */
bool ice_is_reset_in_progress(unsigned long *state)
{
        return test_bit(ICE_RESET_OICR_RECV, state) ||
               test_bit(ICE_PFR_REQ, state) ||
               test_bit(ICE_CORER_REQ, state) ||
               test_bit(ICE_GLOBR_REQ, state);
}

/**
 * ice_wait_for_reset - Wait for driver to finish reset and rebuild
 * @pf: pointer to the PF structure
 * @timeout: length of time to wait, in jiffies
 *
 * Wait (sleep) for a short time until the driver finishes cleaning up from
 * a device reset. The caller must be able to sleep. Use this to delay
 * operations that could fail while the driver is cleaning up after a device
 * reset.
 *
 * Returns 0 on success, -EBUSY if the reset is not finished within the
 * timeout, and -ERESTARTSYS if the thread was interrupted.
 */
int ice_wait_for_reset(struct ice_pf *pf, unsigned long timeout)
{
        long ret;

        ret = wait_event_interruptible_timeout(pf->reset_wait_queue,
                                               !ice_is_reset_in_progress(pf->state),
                                               timeout);
        if (ret < 0)
                return ret;
        else if (!ret)
                return -EBUSY;
        else
                return 0;
}

/**
 * ice_vsi_update_q_map - update our copy of the VSI info with new queue map
 * @vsi: VSI being configured
 * @ctx: the context buffer returned from AQ VSI update command
 */
static void ice_vsi_update_q_map(struct ice_vsi *vsi, struct ice_vsi_ctx *ctx)
{
        vsi->info.mapping_flags = ctx->info.mapping_flags;
        memcpy(&vsi->info.q_mapping, &ctx->info.q_mapping,
               sizeof(vsi->info.q_mapping));
        memcpy(&vsi->info.tc_mapping, ctx->info.tc_mapping,
               sizeof(vsi->info.tc_mapping));
}

/**
 * ice_vsi_cfg_netdev_tc - Setup the netdev TC configuration
 * @vsi: the VSI being configured
 * @ena_tc: TC map to be enabled
 */
void ice_vsi_cfg_netdev_tc(struct ice_vsi *vsi, u8 ena_tc)
{
        struct net_device *netdev = vsi->netdev;
        struct ice_pf *pf = vsi->back;
        int numtc = vsi->tc_cfg.numtc;
        struct ice_dcbx_cfg *dcbcfg;
        u8 netdev_tc;
        int i;

        if (!netdev)
                return;

        /* CHNL VSI doesn't have it's own netdev, hence, no netdev_tc */
        if (vsi->type == ICE_VSI_CHNL)
                return;

        if (!ena_tc) {
                netdev_reset_tc(netdev);
                return;
        }

        if (vsi->type == ICE_VSI_PF && ice_is_adq_active(pf))
                numtc = vsi->all_numtc;

        if (netdev_set_num_tc(netdev, numtc))
                return;

        dcbcfg = &pf->hw.port_info->qos_cfg.local_dcbx_cfg;

        ice_for_each_traffic_class(i)
                if (vsi->tc_cfg.ena_tc & BIT(i))
                        netdev_set_tc_queue(netdev,
                                            vsi->tc_cfg.tc_info[i].netdev_tc,
                                            vsi->tc_cfg.tc_info[i].qcount_tx,
                                            vsi->tc_cfg.tc_info[i].qoffset);
        /* setup TC queue map for CHNL TCs */
        ice_for_each_chnl_tc(i) {
                if (!(vsi->all_enatc & BIT(i)))
                        break;
                if (!vsi->mqprio_qopt.qopt.count[i])
                        break;
                netdev_set_tc_queue(netdev, i,
                                    vsi->mqprio_qopt.qopt.count[i],
                                    vsi->mqprio_qopt.qopt.offset[i]);
        }

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

        for (i = 0; i < ICE_MAX_USER_PRIORITY; i++) {
                u8 ets_tc = dcbcfg->etscfg.prio_table[i];

                /* Get the mapped netdev TC# for the UP */
                netdev_tc = vsi->tc_cfg.tc_info[ets_tc].netdev_tc;
                netdev_set_prio_tc_map(netdev, i, netdev_tc);
        }
}

/**
 * ice_vsi_setup_q_map_mqprio - Prepares mqprio based tc_config
 * @vsi: the VSI being configured,
 * @ctxt: VSI context structure
 * @ena_tc: number of traffic classes to enable
 *
 * Prepares VSI tc_config to have queue configurations based on MQPRIO options.
 */
static int
ice_vsi_setup_q_map_mqprio(struct ice_vsi *vsi, struct ice_vsi_ctx *ctxt,
                           u8 ena_tc)
{
        u16 pow, offset = 0, qcount_tx = 0, qcount_rx = 0, qmap;
        u16 tc0_offset = vsi->mqprio_qopt.qopt.offset[0];
        int tc0_qcount = vsi->mqprio_qopt.qopt.count[0];
        u8 netdev_tc = 0;
        int i;

        vsi->tc_cfg.ena_tc = ena_tc ? ena_tc : 1;

        pow = order_base_2(tc0_qcount);
        qmap = ((tc0_offset << ICE_AQ_VSI_TC_Q_OFFSET_S) &
                ICE_AQ_VSI_TC_Q_OFFSET_M) |
                ((pow << ICE_AQ_VSI_TC_Q_NUM_S) & ICE_AQ_VSI_TC_Q_NUM_M);

        ice_for_each_traffic_class(i) {
                if (!(vsi->tc_cfg.ena_tc & BIT(i))) {
                        /* TC is not enabled */
                        vsi->tc_cfg.tc_info[i].qoffset = 0;
                        vsi->tc_cfg.tc_info[i].qcount_rx = 1;
                        vsi->tc_cfg.tc_info[i].qcount_tx = 1;
                        vsi->tc_cfg.tc_info[i].netdev_tc = 0;
                        ctxt->info.tc_mapping[i] = 0;
                        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->tc_cfg.tc_info[i].qoffset = offset;
                vsi->tc_cfg.tc_info[i].qcount_rx = qcount_rx;
                vsi->tc_cfg.tc_info[i].qcount_tx = qcount_tx;
                vsi->tc_cfg.tc_info[i].netdev_tc = netdev_tc++;
        }

        if (vsi->all_numtc && vsi->all_numtc != vsi->tc_cfg.numtc) {
                ice_for_each_chnl_tc(i) {
                        if (!(vsi->all_enatc & 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];
                }
        }

        /* Set actual Tx/Rx queue pairs */
        vsi->num_txq = offset + qcount_tx;
        if (vsi->num_txq > vsi->alloc_txq) {
                dev_err(ice_pf_to_dev(vsi->back), "Trying to use more Tx queues (%u), than were allocated (%u)!\n",
                        vsi->num_txq, vsi->alloc_txq);
                return -EINVAL;
        }

        vsi->num_rxq = offset + qcount_rx;
        if (vsi->num_rxq > vsi->alloc_rxq) {
                dev_err(ice_pf_to_dev(vsi->back), "Trying to use more Rx queues (%u), than were allocated (%u)!\n",
                        vsi->num_rxq, vsi->alloc_rxq);
                return -EINVAL;
        }

        /* Setup queue TC[0].qmap for given VSI context */
        ctxt->info.tc_mapping[0] = cpu_to_le16(qmap);
        ctxt->info.q_mapping[0] = cpu_to_le16(vsi->rxq_map[0]);
        ctxt->info.q_mapping[1] = cpu_to_le16(tc0_qcount);

        /* Find queue count available for channel VSIs and starting offset
         * for channel VSIs
         */
        if (tc0_qcount && tc0_qcount < vsi->num_rxq) {
                vsi->cnt_q_avail = vsi->num_rxq - tc0_qcount;
                vsi->next_base_q = tc0_qcount;
        }
        dev_dbg(ice_pf_to_dev(vsi->back), "vsi->num_txq = %d\n",  vsi->num_txq);
        dev_dbg(ice_pf_to_dev(vsi->back), "vsi->num_rxq = %d\n",  vsi->num_rxq);
        dev_dbg(ice_pf_to_dev(vsi->back), "all_numtc %u, all_enatc: 0x%04x, tc_cfg.numtc %u\n",
                vsi->all_numtc, vsi->all_enatc, vsi->tc_cfg.numtc);

        return 0;
}

/**
 * ice_vsi_cfg_tc - Configure VSI Tx Sched for given TC map
 * @vsi: VSI to be configured
 * @ena_tc: TC bitmap
 *
 * VSI queues expected to be quiesced before calling this function
 */
int ice_vsi_cfg_tc(struct ice_vsi *vsi, u8 ena_tc)
{
        u16 max_txqs[ICE_MAX_TRAFFIC_CLASS] = { 0 };
        struct ice_pf *pf = vsi->back;
        struct ice_vsi_ctx *ctx;
        struct device *dev;
        int i, ret = 0;
        u8 num_tc = 0;

        dev = ice_pf_to_dev(pf);
        if (vsi->tc_cfg.ena_tc == ena_tc &&
            vsi->mqprio_qopt.mode != TC_MQPRIO_MODE_CHANNEL)
                return ret;

        ice_for_each_traffic_class(i) {
                /* build bitmap of enabled TCs */
                if (ena_tc & BIT(i))
                        num_tc++;
                /* populate max_txqs per TC */
                max_txqs[i] = vsi->alloc_txq;
                /* Update max_txqs if it is CHNL VSI, because alloc_t[r]xq are
                 * zero for CHNL VSI, hence use num_txq instead as max_txqs
                 */
                if (vsi->type == ICE_VSI_CHNL &&
                    test_bit(ICE_FLAG_TC_MQPRIO, pf->flags))
                        max_txqs[i] = vsi->num_txq;
        }

        vsi->tc_cfg.ena_tc = ena_tc;
        vsi->tc_cfg.numtc = num_tc;

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

        ctx->vf_num = 0;
        ctx->info = vsi->info;

        if (vsi->type == ICE_VSI_PF &&
            test_bit(ICE_FLAG_TC_MQPRIO, pf->flags))
                ret = ice_vsi_setup_q_map_mqprio(vsi, ctx, ena_tc);
        else
                ret = ice_vsi_setup_q_map(vsi, ctx);

        if (ret)
                goto out;

        /* must to indicate which section of VSI context are being modified */
        ctx->info.valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_RXQ_MAP_VALID);
        ret = ice_update_vsi(&pf->hw, vsi->idx, ctx, NULL);
        if (ret) {
                dev_info(dev, "Failed VSI Update\n");
                goto out;
        }

        if (vsi->type == ICE_VSI_PF &&
            test_bit(ICE_FLAG_TC_MQPRIO, pf->flags))
                ret = ice_cfg_vsi_lan(vsi->port_info, vsi->idx, 1, max_txqs);
        else
                ret = ice_cfg_vsi_lan(vsi->port_info, vsi->idx,
                                      vsi->tc_cfg.ena_tc, max_txqs);

        if (ret) {
                dev_err(dev, "VSI %d failed TC config, error %d\n",
                        vsi->vsi_num, ret);
                goto out;
        }
        ice_vsi_update_q_map(vsi, ctx);
        vsi->info.valid_sections = 0;

        ice_vsi_cfg_netdev_tc(vsi, ena_tc);
out:
        kfree(ctx);
        return ret;
}

/**
 * ice_update_ring_stats - Update ring statistics
 * @stats: stats to be updated
 * @pkts: number of processed packets
 * @bytes: number of processed bytes
 *
 * This function assumes that caller has acquired a u64_stats_sync lock.
 */
static void ice_update_ring_stats(struct ice_q_stats *stats, u64 pkts, u64 bytes)
{
        stats->bytes += bytes;
        stats->pkts += pkts;
}

/**
 * ice_update_tx_ring_stats - Update Tx ring specific counters
 * @tx_ring: ring to update
 * @pkts: number of processed packets
 * @bytes: number of processed bytes
 */
void ice_update_tx_ring_stats(struct ice_tx_ring *tx_ring, u64 pkts, u64 bytes)
{
        u64_stats_update_begin(&tx_ring->syncp);
        ice_update_ring_stats(&tx_ring->stats, pkts, bytes);
        u64_stats_update_end(&tx_ring->syncp);
}

/**
 * ice_update_rx_ring_stats - Update Rx ring specific counters
 * @rx_ring: ring to update
 * @pkts: number of processed packets
 * @bytes: number of processed bytes
 */
void ice_update_rx_ring_stats(struct ice_rx_ring *rx_ring, u64 pkts, u64 bytes)
{
        u64_stats_update_begin(&rx_ring->syncp);
        ice_update_ring_stats(&rx_ring->stats, pkts, bytes);
        u64_stats_update_end(&rx_ring->syncp);
}

/**
 * ice_is_dflt_vsi_in_use - check if the default forwarding VSI is being used
 * @pi: port info of the switch with default VSI
 *
 * Return true if the there is a single VSI in default forwarding VSI list
 */
bool ice_is_dflt_vsi_in_use(struct ice_port_info *pi)
{
        bool exists = false;

        ice_check_if_dflt_vsi(pi, 0, &exists);
        return exists;
}

/**
 * ice_is_vsi_dflt_vsi - check if the VSI passed in is the default VSI
 * @vsi: VSI to compare against default forwarding VSI
 *
 * If this VSI passed in is the default forwarding VSI then return true, else
 * return false
 */
bool ice_is_vsi_dflt_vsi(struct ice_vsi *vsi)
{
        return ice_check_if_dflt_vsi(vsi->port_info, vsi->idx, NULL);
}

/**
 * ice_set_dflt_vsi - set the default forwarding VSI
 * @vsi: VSI getting set as the default forwarding VSI on the switch
 *
 * If the VSI passed in is already the default VSI and it's enabled just return
 * success.
 *
 * Otherwise try to set the VSI passed in as the switch's default VSI and
 * return the result.
 */
int ice_set_dflt_vsi(struct ice_vsi *vsi)
{
        struct device *dev;
        int status;

        if (!vsi)
                return -EINVAL;

        dev = ice_pf_to_dev(vsi->back);

        /* the VSI passed in is already the default VSI */
        if (ice_is_vsi_dflt_vsi(vsi)) {
                dev_dbg(dev, "VSI %d passed in is already the default forwarding VSI, nothing to do\n",
                        vsi->vsi_num);
                return 0;
        }

        status = ice_cfg_dflt_vsi(vsi->port_info, vsi->idx, true, ICE_FLTR_RX);
        if (status) {
                dev_err(dev, "Failed to set VSI %d as the default forwarding VSI, error %d\n",
                        vsi->vsi_num, status);
                return status;
        }

        return 0;
}

/**
 * ice_clear_dflt_vsi - clear the default forwarding VSI
 * @vsi: VSI to remove from filter list
 *
 * If the switch has no default VSI or it's not enabled then return error.
 *
 * Otherwise try to clear the default VSI and return the result.
 */
int ice_clear_dflt_vsi(struct ice_vsi *vsi)
{
        struct device *dev;
        int status;

        if (!vsi)
                return -EINVAL;

        dev = ice_pf_to_dev(vsi->back);

        /* there is no default VSI configured */
        if (!ice_is_dflt_vsi_in_use(vsi->port_info))
                return -ENODEV;

        status = ice_cfg_dflt_vsi(vsi->port_info, vsi->idx, false,
                                  ICE_FLTR_RX);
        if (status) {
                dev_err(dev, "Failed to clear the default forwarding VSI %d, error %d\n",
                        vsi->vsi_num, status);
                return -EIO;
        }

        return 0;
}

/**
 * ice_get_link_speed_mbps - get link speed in Mbps
 * @vsi: the VSI whose link speed is being queried
 *
 * Return current VSI link speed and 0 if the speed is unknown.
 */
int ice_get_link_speed_mbps(struct ice_vsi *vsi)
{
        switch (vsi->port_info->phy.link_info.link_speed) {
        case ICE_AQ_LINK_SPEED_100GB:
                return SPEED_100000;
        case ICE_AQ_LINK_SPEED_50GB:
                return SPEED_50000;
        case ICE_AQ_LINK_SPEED_40GB:
                return SPEED_40000;
        case ICE_AQ_LINK_SPEED_25GB:
                return SPEED_25000;
        case ICE_AQ_LINK_SPEED_20GB:
                return SPEED_20000;
        case ICE_AQ_LINK_SPEED_10GB:
                return SPEED_10000;
        case ICE_AQ_LINK_SPEED_5GB:
                return SPEED_5000;
        case ICE_AQ_LINK_SPEED_2500MB:
                return SPEED_2500;
        case ICE_AQ_LINK_SPEED_1000MB:
                return SPEED_1000;
        case ICE_AQ_LINK_SPEED_100MB:
                return SPEED_100;
        case ICE_AQ_LINK_SPEED_10MB:
                return SPEED_10;
        case ICE_AQ_LINK_SPEED_UNKNOWN:
        default:
                return 0;
        }
}

/**
 * ice_get_link_speed_kbps - get link speed in Kbps
 * @vsi: the VSI whose link speed is being queried
 *
 * Return current VSI link speed and 0 if the speed is unknown.
 */
int ice_get_link_speed_kbps(struct ice_vsi *vsi)
{
        int speed_mbps;

        speed_mbps = ice_get_link_speed_mbps(vsi);

        return speed_mbps * 1000;
}

/**
 * ice_set_min_bw_limit - setup minimum BW limit for Tx based on min_tx_rate
 * @vsi: VSI to be configured
 * @min_tx_rate: min Tx rate in Kbps to be configured as BW limit
 *
 * If the min_tx_rate is specified as 0 that means to clear the minimum BW limit
 * profile, otherwise a non-zero value will force a minimum BW limit for the VSI
 * on TC 0.
 */
int ice_set_min_bw_limit(struct ice_vsi *vsi, u64 min_tx_rate)
{
        struct ice_pf *pf = vsi->back;
        struct device *dev;
        int status;
        int speed;

        dev = ice_pf_to_dev(pf);
        if (!vsi->port_info) {
                dev_dbg(dev, "VSI %d, type %u specified doesn't have valid port_info\n",
                        vsi->idx, vsi->type);
                return -EINVAL;
        }

        speed = ice_get_link_speed_kbps(vsi);
        if (min_tx_rate > (u64)speed) {
                dev_err(dev, "invalid min Tx rate %llu Kbps specified for %s %d is greater than current link speed %u Kbps\n",
                        min_tx_rate, ice_vsi_type_str(vsi->type), vsi->idx,
                        speed);
                return -EINVAL;
        }

        /* Configure min BW for VSI limit */
        if (min_tx_rate) {
                status = ice_cfg_vsi_bw_lmt_per_tc(vsi->port_info, vsi->idx, 0,
                                                   ICE_MIN_BW, min_tx_rate);
                if (status) {
                        dev_err(dev, "failed to set min Tx rate(%llu Kbps) for %s %d\n",
                                min_tx_rate, ice_vsi_type_str(vsi->type),
                                vsi->idx);
                        return status;
                }

                dev_dbg(dev, "set min Tx rate(%llu Kbps) for %s\n",
                        min_tx_rate, ice_vsi_type_str(vsi->type));
        } else {
                status = ice_cfg_vsi_bw_dflt_lmt_per_tc(vsi->port_info,
                                                        vsi->idx, 0,
                                                        ICE_MIN_BW);
                if (status) {
                        dev_err(dev, "failed to clear min Tx rate configuration for %s %d\n",
                                ice_vsi_type_str(vsi->type), vsi->idx);
                        return status;
                }

                dev_dbg(dev, "cleared min Tx rate configuration for %s %d\n",
                        ice_vsi_type_str(vsi->type), vsi->idx);
        }

        return 0;
}

/**
 * ice_set_max_bw_limit - setup maximum BW limit for Tx based on max_tx_rate
 * @vsi: VSI to be configured
 * @max_tx_rate: max Tx rate in Kbps to be configured as BW limit
 *
 * If the max_tx_rate is specified as 0 that means to clear the maximum BW limit
 * profile, otherwise a non-zero value will force a maximum BW limit for the VSI
 * on TC 0.
 */
int ice_set_max_bw_limit(struct ice_vsi *vsi, u64 max_tx_rate)
{
        struct ice_pf *pf = vsi->back;
        struct device *dev;
        int status;
        int speed;

        dev = ice_pf_to_dev(pf);
        if (!vsi->port_info) {
                dev_dbg(dev, "VSI %d, type %u specified doesn't have valid port_info\n",
                        vsi->idx, vsi->type);
                return -EINVAL;
        }

        speed = ice_get_link_speed_kbps(vsi);
        if (max_tx_rate > (u64)speed) {
                dev_err(dev, "invalid max Tx rate %llu Kbps specified for %s %d is greater than current link speed %u Kbps\n",
                        max_tx_rate, ice_vsi_type_str(vsi->type), vsi->idx,
                        speed);
                return -EINVAL;
        }

        /* Configure max BW for VSI limit */
        if (max_tx_rate) {
                status = ice_cfg_vsi_bw_lmt_per_tc(vsi->port_info, vsi->idx, 0,
                                                   ICE_MAX_BW, max_tx_rate);
                if (status) {
                        dev_err(dev, "failed setting max Tx rate(%llu Kbps) for %s %d\n",
                                max_tx_rate, ice_vsi_type_str(vsi->type),
                                vsi->idx);
                        return status;
                }

                dev_dbg(dev, "set max Tx rate(%llu Kbps) for %s %d\n",
                        max_tx_rate, ice_vsi_type_str(vsi->type), vsi->idx);
        } else {
                status = ice_cfg_vsi_bw_dflt_lmt_per_tc(vsi->port_info,
                                                        vsi->idx, 0,
                                                        ICE_MAX_BW);
                if (status) {
                        dev_err(dev, "failed clearing max Tx rate configuration for %s %d\n",
                                ice_vsi_type_str(vsi->type), vsi->idx);
                        return status;
                }

                dev_dbg(dev, "cleared max Tx rate configuration for %s %d\n",
                        ice_vsi_type_str(vsi->type), vsi->idx);
        }

        return 0;
}

/**
 * ice_set_link - turn on/off physical link
 * @vsi: VSI to modify physical link on
 * @ena: turn on/off physical link
 */
int ice_set_link(struct ice_vsi *vsi, bool ena)
{
        struct device *dev = ice_pf_to_dev(vsi->back);
        struct ice_port_info *pi = vsi->port_info;
        struct ice_hw *hw = pi->hw;
        int status;

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

        status = ice_aq_set_link_restart_an(pi, ena, NULL);

        /* if link is owned by manageability, FW will return ICE_AQ_RC_EMODE.
         * this is not a fatal error, so print a warning message and return
         * a success code. Return an error if FW returns an error code other
         * than ICE_AQ_RC_EMODE
         */
        if (status == -EIO) {
                if (hw->adminq.sq_last_status == ICE_AQ_RC_EMODE)
                        dev_dbg(dev, "can't set link to %s, err %d aq_err %s. not fatal, continuing\n",
                                (ena ? "ON" : "OFF"), status,
                                ice_aq_str(hw->adminq.sq_last_status));
        } else if (status) {
                dev_err(dev, "can't set link to %s, err %d aq_err %s\n",
                        (ena ? "ON" : "OFF"), status,
                        ice_aq_str(hw->adminq.sq_last_status));
                return status;
        }

        return 0;
}

/**
 * ice_vsi_add_vlan_zero - add VLAN 0 filter(s) for this VSI
 * @vsi: VSI used to add VLAN filters
 *
 * In Single VLAN Mode (SVM), single VLAN filters via ICE_SW_LKUP_VLAN are based
 * on the inner VLAN ID, so the VLAN TPID (i.e. 0x8100 or 0x888a8) doesn't
 * matter. In Double VLAN Mode (DVM), outer/single VLAN filters via
 * ICE_SW_LKUP_VLAN are based on the outer/single VLAN ID + VLAN TPID.
 *
 * For both modes add a VLAN 0 + no VLAN TPID filter to handle untagged traffic
 * when VLAN pruning is enabled. Also, this handles VLAN 0 priority tagged
 * traffic in SVM, since the VLAN TPID isn't part of filtering.
 *
 * If DVM is enabled then an explicit VLAN 0 + VLAN TPID filter needs to be
 * added to allow VLAN 0 priority tagged traffic in DVM, since the VLAN TPID is
 * part of filtering.
 */
int ice_vsi_add_vlan_zero(struct ice_vsi *vsi)
{
        struct ice_vsi_vlan_ops *vlan_ops = ice_get_compat_vsi_vlan_ops(vsi);
        struct ice_vlan vlan;
        int err;

        vlan = ICE_VLAN(0, 0, 0);
        err = vlan_ops->add_vlan(vsi, &vlan);
        if (err && err != -EEXIST)
                return err;

        /* in SVM both VLAN 0 filters are identical */
        if (!ice_is_dvm_ena(&vsi->back->hw))
                return 0;

        vlan = ICE_VLAN(ETH_P_8021Q, 0, 0);
        err = vlan_ops->add_vlan(vsi, &vlan);
        if (err && err != -EEXIST)
                return err;

        return 0;
}

/**
 * ice_vsi_del_vlan_zero - delete VLAN 0 filter(s) for this VSI
 * @vsi: VSI used to add VLAN filters
 *
 * Delete the VLAN 0 filters in the same manner that they were added in
 * ice_vsi_add_vlan_zero.
 */
int ice_vsi_del_vlan_zero(struct ice_vsi *vsi)
{
        struct ice_vsi_vlan_ops *vlan_ops = ice_get_compat_vsi_vlan_ops(vsi);
        struct ice_vlan vlan;
        int err;

        vlan = ICE_VLAN(0, 0, 0);
        err = vlan_ops->del_vlan(vsi, &vlan);
        if (err && err != -EEXIST)
                return err;

        /* in SVM both VLAN 0 filters are identical */
        if (!ice_is_dvm_ena(&vsi->back->hw))
                return 0;

        vlan = ICE_VLAN(ETH_P_8021Q, 0, 0);
        err = vlan_ops->del_vlan(vsi, &vlan);
        if (err && err != -EEXIST)
                return err;

        return 0;
}

/**
 * ice_vsi_num_zero_vlans - get number of VLAN 0 filters based on VLAN mode
 * @vsi: VSI used to get the VLAN mode
 *
 * If DVM is enabled then 2 VLAN 0 filters are added, else if SVM is enabled
 * then 1 VLAN 0 filter is added. See ice_vsi_add_vlan_zero for more details.
 */
static u16 ice_vsi_num_zero_vlans(struct ice_vsi *vsi)
{
#define ICE_DVM_NUM_ZERO_VLAN_FLTRS     2
#define ICE_SVM_NUM_ZERO_VLAN_FLTRS     1
        /* no VLAN 0 filter is created when a port VLAN is active */
        if (vsi->type == ICE_VSI_VF) {
                if (WARN_ON(!vsi->vf))
                        return 0;

                if (ice_vf_is_port_vlan_ena(vsi->vf))
                        return 0;
        }

        if (ice_is_dvm_ena(&vsi->back->hw))
                return ICE_DVM_NUM_ZERO_VLAN_FLTRS;
        else
                return ICE_SVM_NUM_ZERO_VLAN_FLTRS;
}

/**
 * ice_vsi_has_non_zero_vlans - check if VSI has any non-zero VLANs
 * @vsi: VSI used to determine if any non-zero VLANs have been added
 */
bool ice_vsi_has_non_zero_vlans(struct ice_vsi *vsi)
{
        return (vsi->num_vlan > ice_vsi_num_zero_vlans(vsi));
}

/**
 * ice_vsi_num_non_zero_vlans - get the number of non-zero VLANs for this VSI
 * @vsi: VSI used to get the number of non-zero VLANs added
 */
u16 ice_vsi_num_non_zero_vlans(struct ice_vsi *vsi)
{
        return (vsi->num_vlan - ice_vsi_num_zero_vlans(vsi));
}

/**
 * ice_is_feature_supported
 * @pf: pointer to the struct ice_pf instance
 * @f: feature enum to be checked
 *
 * returns true if feature is supported, false otherwise
 */
bool ice_is_feature_supported(struct ice_pf *pf, enum ice_feature f)
{
        if (f < 0 || f >= ICE_F_MAX)
                return false;

        return test_bit(f, pf->features);
}

/**
 * ice_set_feature_support
 * @pf: pointer to the struct ice_pf instance
 * @f: feature enum to set
 */
static void ice_set_feature_support(struct ice_pf *pf, enum ice_feature f)
{
        if (f < 0 || f >= ICE_F_MAX)
                return;

        set_bit(f, pf->features);
}

/**
 * ice_clear_feature_support
 * @pf: pointer to the struct ice_pf instance
 * @f: feature enum to clear
 */
void ice_clear_feature_support(struct ice_pf *pf, enum ice_feature f)
{
        if (f < 0 || f >= ICE_F_MAX)
                return;

        clear_bit(f, pf->features);
}

/**
 * ice_init_feature_support
 * @pf: pointer to the struct ice_pf instance
 *
 * called during init to setup supported feature
 */
void ice_init_feature_support(struct ice_pf *pf)
{
        switch (pf->hw.device_id) {
        case ICE_DEV_ID_E810C_BACKPLANE:
        case ICE_DEV_ID_E810C_QSFP:
        case ICE_DEV_ID_E810C_SFP:
                ice_set_feature_support(pf, ICE_F_DSCP);
                ice_set_feature_support(pf, ICE_F_PTP_EXTTS);
                if (ice_is_e810t(&pf->hw)) {
                        ice_set_feature_support(pf, ICE_F_SMA_CTRL);
                        if (ice_gnss_is_gps_present(&pf->hw))
                                ice_set_feature_support(pf, ICE_F_GNSS);
                }
                break;
        default:
                break;
        }
}

/**
 * ice_vsi_update_security - update security block in VSI
 * @vsi: pointer to VSI structure
 * @fill: function pointer to fill ctx
 */
int
ice_vsi_update_security(struct ice_vsi *vsi, void (*fill)(struct ice_vsi_ctx *))
{
        struct ice_vsi_ctx ctx = { 0 };

        ctx.info = vsi->info;
        ctx.info.valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_SECURITY_VALID);
        fill(&ctx);

        if (ice_update_vsi(&vsi->back->hw, vsi->idx, &ctx, NULL))
                return -ENODEV;

        vsi->info = ctx.info;
        return 0;
}

/**
 * ice_vsi_ctx_set_antispoof - set antispoof function in VSI ctx
 * @ctx: pointer to VSI ctx structure
 */
void ice_vsi_ctx_set_antispoof(struct ice_vsi_ctx *ctx)
{
        ctx->info.sec_flags |= ICE_AQ_VSI_SEC_FLAG_ENA_MAC_ANTI_SPOOF |
                               (ICE_AQ_VSI_SEC_TX_VLAN_PRUNE_ENA <<
                                ICE_AQ_VSI_SEC_TX_PRUNE_ENA_S);
}

/**
 * ice_vsi_ctx_clear_antispoof - clear antispoof function in VSI ctx
 * @ctx: pointer to VSI ctx structure
 */
void ice_vsi_ctx_clear_antispoof(struct ice_vsi_ctx *ctx)
{
        ctx->info.sec_flags &= ~ICE_AQ_VSI_SEC_FLAG_ENA_MAC_ANTI_SPOOF &
                               ~(ICE_AQ_VSI_SEC_TX_VLAN_PRUNE_ENA <<
                                 ICE_AQ_VSI_SEC_TX_PRUNE_ENA_S);
}

/**
 * ice_vsi_ctx_set_allow_override - allow destination override on VSI
 * @ctx: pointer to VSI ctx structure
 */
void ice_vsi_ctx_set_allow_override(struct ice_vsi_ctx *ctx)
{
        ctx->info.sec_flags |= ICE_AQ_VSI_SEC_FLAG_ALLOW_DEST_OVRD;
}

/**
 * ice_vsi_ctx_clear_allow_override - turn off destination override on VSI
 * @ctx: pointer to VSI ctx structure
 */
void ice_vsi_ctx_clear_allow_override(struct ice_vsi_ctx *ctx)
{
        ctx->info.sec_flags &= ~ICE_AQ_VSI_SEC_FLAG_ALLOW_DEST_OVRD;
}