[mirror_ubuntu-jammy-kernel.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_lib.h"
#include "ice_dcb_lib.h"

/**
 * ice_setup_rx_ctx - Configure a receive ring context
 * @ring: The Rx ring to configure
 *
 * Configure the Rx descriptor ring in RLAN context.
 */
static int ice_setup_rx_ctx(struct ice_ring *ring)
{
        struct ice_vsi *vsi = ring->vsi;
        struct ice_hw *hw = &vsi->back->hw;
        u32 rxdid = ICE_RXDID_FLEX_NIC;
        struct ice_rlan_ctx rlan_ctx;
        u32 regval;
        u16 pf_q;
        int err;

        /* what is Rx queue number in global space of 2K Rx queues */
        pf_q = vsi->rxq_map[ring->q_index];

        /* clear the context structure first */
        memset(&rlan_ctx, 0, sizeof(rlan_ctx));

        rlan_ctx.base = ring->dma >> 7;

        rlan_ctx.qlen = ring->count;

        /* Receive Packet Data Buffer Size.
         * The Packet Data Buffer Size is defined in 128 byte units.
         */
        rlan_ctx.dbuf = vsi->rx_buf_len >> ICE_RLAN_CTX_DBUF_S;

        /* use 32 byte descriptors */
        rlan_ctx.dsize = 1;

        /* Strip the Ethernet CRC bytes before the packet is posted to host
         * memory.
         */
        rlan_ctx.crcstrip = 1;

        /* L2TSEL flag defines the reported L2 Tags in the receive descriptor */
        rlan_ctx.l2tsel = 1;

        rlan_ctx.dtype = ICE_RX_DTYPE_NO_SPLIT;
        rlan_ctx.hsplit_0 = ICE_RLAN_RX_HSPLIT_0_NO_SPLIT;
        rlan_ctx.hsplit_1 = ICE_RLAN_RX_HSPLIT_1_NO_SPLIT;

        /* This controls whether VLAN is stripped from inner headers
         * The VLAN in the inner L2 header is stripped to the receive
         * descriptor if enabled by this flag.
         */
        rlan_ctx.showiv = 0;

        /* Max packet size for this queue - must not be set to a larger value
         * than 5 x DBUF
         */
        rlan_ctx.rxmax = min_t(u16, vsi->max_frame,
                               ICE_MAX_CHAINED_RX_BUFS * vsi->rx_buf_len);

        /* Rx queue threshold in units of 64 */
        rlan_ctx.lrxqthresh = 1;

         /* Enable Flexible Descriptors in the queue context which
          * allows this driver to select a specific receive descriptor format
          */
        if (vsi->type != ICE_VSI_VF) {
                regval = rd32(hw, QRXFLXP_CNTXT(pf_q));
                regval |= (rxdid << QRXFLXP_CNTXT_RXDID_IDX_S) &
                        QRXFLXP_CNTXT_RXDID_IDX_M;

                /* increasing context priority to pick up profile ID;
                 * default is 0x01; setting to 0x03 to ensure profile
                 * is programming if prev context is of same priority
                 */
                regval |= (0x03 << QRXFLXP_CNTXT_RXDID_PRIO_S) &
                        QRXFLXP_CNTXT_RXDID_PRIO_M;

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

        /* Absolute queue number out of 2K needs to be passed */
        err = ice_write_rxq_ctx(hw, &rlan_ctx, pf_q);
        if (err) {
                dev_err(&vsi->back->pdev->dev,
                        "Failed to set LAN Rx queue context for absolute Rx queue %d error: %d\n",
                        pf_q, err);
                return -EIO;
        }

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

        /* init queue specific tail register */
        ring->tail = hw->hw_addr + QRX_TAIL(pf_q);
        writel(0, ring->tail);
        ice_alloc_rx_bufs(ring, ICE_DESC_UNUSED(ring));

        return 0;
}

/**
 * ice_setup_tx_ctx - setup a struct ice_tlan_ctx instance
 * @ring: The Tx ring to configure
 * @tlan_ctx: Pointer to the Tx LAN queue context structure to be initialized
 * @pf_q: queue index in the PF space
 *
 * Configure the Tx descriptor ring in TLAN context.
 */
static void
ice_setup_tx_ctx(struct ice_ring *ring, struct ice_tlan_ctx *tlan_ctx, u16 pf_q)
{
        struct ice_vsi *vsi = ring->vsi;
        struct ice_hw *hw = &vsi->back->hw;

        tlan_ctx->base = ring->dma >> ICE_TLAN_CTX_BASE_S;

        tlan_ctx->port_num = vsi->port_info->lport;

        /* Transmit Queue Length */
        tlan_ctx->qlen = ring->count;

        ice_set_cgd_num(tlan_ctx, ring);

        /* PF number */
        tlan_ctx->pf_num = hw->pf_id;

        /* queue belongs to a specific VSI type
         * VF / VM index should be programmed per vmvf_type setting:
         * for vmvf_type = VF, it is VF number between 0-256
         * for vmvf_type = VM, it is VM number between 0-767
         * for PF or EMP this field should be set to zero
         */
        switch (vsi->type) {
        case ICE_VSI_PF:
                tlan_ctx->vmvf_type = ICE_TLAN_CTX_VMVF_TYPE_PF;
                break;
        case ICE_VSI_VF:
                /* Firmware expects vmvf_num to be absolute VF ID */
                tlan_ctx->vmvf_num = hw->func_caps.vf_base_id + vsi->vf_id;
                tlan_ctx->vmvf_type = ICE_TLAN_CTX_VMVF_TYPE_VF;
                break;
        default:
                return;
        }

        /* make sure the context is associated with the right VSI */
        tlan_ctx->src_vsi = ice_get_hw_vsi_num(hw, vsi->idx);

        tlan_ctx->tso_ena = ICE_TX_LEGACY;
        tlan_ctx->tso_qnum = pf_q;

        /* Legacy or Advanced Host Interface:
         * 0: Advanced Host Interface
         * 1: Legacy Host Interface
         */
        tlan_ctx->legacy_int = ICE_TX_LEGACY;
}

/**
 * ice_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
 * @pf: the PF being configured
 * @pf_q: the PF queue
 * @ena: enable or disable state of the queue
 *
 * This routine will wait for the given Rx queue of the PF to reach the
 * enabled or disabled state.
 * Returns -ETIMEDOUT in case of failing to reach the requested state after
 * multiple retries; else will return 0 in case of success.
 */
static int ice_pf_rxq_wait(struct ice_pf *pf, int pf_q, bool ena)
{
        int i;

        for (i = 0; i < ICE_Q_WAIT_MAX_RETRY; i++) {
                if (ena == !!(rd32(&pf->hw, QRX_CTRL(pf_q)) &
                              QRX_CTRL_QENA_STAT_M))
                        return 0;

                usleep_range(20, 40);
        }

        return -ETIMEDOUT;
}

/**
 * ice_vsi_ctrl_rx_rings - Start or stop a VSI's Rx rings
 * @vsi: the VSI being configured
 * @ena: start or stop the Rx rings
 */
static int ice_vsi_ctrl_rx_rings(struct ice_vsi *vsi, bool ena)
{
        struct ice_pf *pf = vsi->back;
        struct ice_hw *hw = &pf->hw;
        int i, ret = 0;

        for (i = 0; i < vsi->num_rxq; i++) {
                int pf_q = vsi->rxq_map[i];
                u32 rx_reg;

                rx_reg = rd32(hw, QRX_CTRL(pf_q));

                /* Skip if the queue is already in the requested state */
                if (ena == !!(rx_reg & QRX_CTRL_QENA_STAT_M))
                        continue;

                /* turn on/off the queue */
                if (ena)
                        rx_reg |= QRX_CTRL_QENA_REQ_M;
                else
                        rx_reg &= ~QRX_CTRL_QENA_REQ_M;
                wr32(hw, QRX_CTRL(pf_q), rx_reg);

                /* wait for the change to finish */
                ret = ice_pf_rxq_wait(pf, pf_q, ena);
                if (ret) {
                        dev_err(&pf->pdev->dev,
                                "VSI idx %d Rx ring %d %sable timeout\n",
                                vsi->idx, pf_q, (ena ? "en" : "dis"));
                        break;
                }
        }

        return ret;
}

/**
 * ice_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the VSI
 * @vsi: VSI pointer
 * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
 *
 * On error: returns error code (negative)
 * On success: returns 0
 */
static int ice_vsi_alloc_arrays(struct ice_vsi *vsi, bool alloc_qvectors)
{
        struct ice_pf *pf = vsi->back;

        /* allocate memory for both Tx and Rx ring pointers */
        vsi->tx_rings = devm_kcalloc(&pf->pdev->dev, vsi->alloc_txq,
                                     sizeof(*vsi->tx_rings), GFP_KERNEL);
        if (!vsi->tx_rings)
                goto err_txrings;

        vsi->rx_rings = devm_kcalloc(&pf->pdev->dev, vsi->alloc_rxq,
                                     sizeof(*vsi->rx_rings), GFP_KERNEL);
        if (!vsi->rx_rings)
                goto err_rxrings;

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

        return 0;

err_vectors:
        devm_kfree(&pf->pdev->dev, vsi->rx_rings);
err_rxrings:
        devm_kfree(&pf->pdev->dev, vsi->tx_rings);
err_txrings:
        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:
                vsi->num_rx_desc = ICE_DFLT_NUM_RX_DESC;
                vsi->num_tx_desc = ICE_DFLT_NUM_TX_DESC;
                break;
        default:
                dev_dbg(&vsi->back->pdev->dev,
                        "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_id: ID of the VF being configured
 *
 * Return 0 on success and a negative value on error
 */
static void ice_vsi_set_num_qs(struct ice_vsi *vsi, u16 vf_id)
{
        struct ice_pf *pf = vsi->back;
        struct ice_vf *vf = NULL;

        if (vsi->type == ICE_VSI_VF)
                vsi->vf_id = vf_id;

        switch (vsi->type) {
        case ICE_VSI_PF:
                vsi->alloc_txq = pf->num_lan_tx;
                vsi->alloc_rxq = pf->num_lan_rx;
                vsi->num_q_vectors = max_t(int, pf->num_lan_rx, pf->num_lan_tx);
                break;
        case ICE_VSI_VF:
                vf = &pf->vf[vsi->vf_id];
                vsi->alloc_txq = vf->num_vf_qs;
                vsi->alloc_rxq = vf->num_vf_qs;
                /* pf->num_vf_msix includes (VF miscellaneous vector +
                 * data queue interrupts). Since vsi->num_q_vectors is number
                 * of queues vectors, subtract 1 from the original vector
                 * count
                 */
                vsi->num_q_vectors = pf->num_vf_msix - 1;
                break;
        default:
                dev_warn(&pf->pdev->dev, "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;
        enum ice_status status;

        ctxt = devm_kzalloc(&pf->pdev->dev, sizeof(*ctxt), GFP_KERNEL);
        if (!ctxt)
                return;

        if (vsi->type == ICE_VSI_VF)
                ctxt->vf_num = vsi->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(&pf->pdev->dev, "Failed to delete VSI %i in FW\n",
                        vsi->vsi_num);

        devm_kfree(&pf->pdev->dev, ctxt);
}

/**
 * ice_vsi_free_arrays - clean up VSI resources
 * @vsi: pointer to VSI being cleared
 * @free_qvectors: bool to specify if q_vectors should be deallocated
 */
static void ice_vsi_free_arrays(struct ice_vsi *vsi, bool free_qvectors)
{
        struct ice_pf *pf = vsi->back;

        /* free the ring and vector containers */
        if (free_qvectors && vsi->q_vectors) {
                devm_kfree(&pf->pdev->dev, vsi->q_vectors);
                vsi->q_vectors = NULL;
        }
        if (vsi->tx_rings) {
                devm_kfree(&pf->pdev->dev, vsi->tx_rings);
                vsi->tx_rings = NULL;
        }
        if (vsi->rx_rings) {
                devm_kfree(&pf->pdev->dev, vsi->rx_rings);
                vsi->rx_rings = 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;

        if (!vsi)
                return 0;

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

        pf = vsi->back;

        if (!pf->vsi[vsi->idx] || pf->vsi[vsi->idx] != vsi) {
                dev_dbg(&pf->pdev->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)
                pf->next_vsi = vsi->idx;

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

        return 0;
}

/**
 * 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.ring && !q_vector->rx.ring)
                return IRQ_HANDLED;

        napi_schedule(&q_vector->napi);

        return IRQ_HANDLED;
}

/**
 * ice_vsi_alloc - Allocates the next available struct VSI in the PF
 * @pf: board private structure
 * @type: type of VSI
 * @vf_id: ID of the VF being configured
 *
 * 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 type, u16 vf_id)
{
        struct ice_vsi *vsi = 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(&pf->pdev->dev, "out of VSI slots!\n");
                goto unlock_pf;
        }

        vsi = devm_kzalloc(&pf->pdev->dev, sizeof(*vsi), GFP_KERNEL);
        if (!vsi)
                goto unlock_pf;

        vsi->type = type;
        vsi->back = pf;
        set_bit(__ICE_DOWN, vsi->state);
        vsi->idx = pf->next_vsi;
        vsi->work_lmt = ICE_DFLT_IRQ_WORK;

        if (type == ICE_VSI_VF)
                ice_vsi_set_num_qs(vsi, vf_id);
        else
                ice_vsi_set_num_qs(vsi, ICE_INVAL_VFID);

        switch (vsi->type) {
        case ICE_VSI_PF:
                if (ice_vsi_alloc_arrays(vsi, true))
                        goto err_rings;

                /* Setup default MSIX irq handler for VSI */
                vsi->irq_handler = ice_msix_clean_rings;
                break;
        case ICE_VSI_VF:
                if (ice_vsi_alloc_arrays(vsi, true))
                        goto err_rings;
                break;
        default:
                dev_warn(&pf->pdev->dev, "Unknown VSI type %d\n", vsi->type);
                goto unlock_pf;
        }

        /* fill VSI slot in the PF struct */
        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);
        goto unlock_pf;

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

/**
 * __ice_vsi_get_qs_contig - Assign a contiguous chunk of queues to VSI
 * @qs_cfg: gathered variables needed for PF->VSI queues assignment
 *
 * Return 0 on success and -ENOMEM in case of no left space in PF queue bitmap
 */
static int __ice_vsi_get_qs_contig(struct ice_qs_cfg *qs_cfg)
{
        int offset, i;

        mutex_lock(qs_cfg->qs_mutex);
        offset = bitmap_find_next_zero_area(qs_cfg->pf_map, qs_cfg->pf_map_size,
                                            0, qs_cfg->q_count, 0);
        if (offset >= qs_cfg->pf_map_size) {
                mutex_unlock(qs_cfg->qs_mutex);
                return -ENOMEM;
        }

        bitmap_set(qs_cfg->pf_map, offset, qs_cfg->q_count);
        for (i = 0; i < qs_cfg->q_count; i++)
                qs_cfg->vsi_map[i + qs_cfg->vsi_map_offset] = i + offset;
        mutex_unlock(qs_cfg->qs_mutex);

        return 0;
}

/**
 * __ice_vsi_get_qs_sc - Assign a scattered queues from PF to VSI
 * @qs_cfg: gathered variables needed for pf->vsi queues assignment
 *
 * Return 0 on success and -ENOMEM in case of no left space in PF queue bitmap
 */
static int __ice_vsi_get_qs_sc(struct ice_qs_cfg *qs_cfg)
{
        int i, index = 0;

        mutex_lock(qs_cfg->qs_mutex);
        for (i = 0; i < qs_cfg->q_count; i++) {
                index = find_next_zero_bit(qs_cfg->pf_map,
                                           qs_cfg->pf_map_size, index);
                if (index >= qs_cfg->pf_map_size)
                        goto err_scatter;
                set_bit(index, qs_cfg->pf_map);
                qs_cfg->vsi_map[i + qs_cfg->vsi_map_offset] = index;
        }
        mutex_unlock(qs_cfg->qs_mutex);

        return 0;
err_scatter:
        for (index = 0; index < i; index++) {
                clear_bit(qs_cfg->vsi_map[index], qs_cfg->pf_map);
                qs_cfg->vsi_map[index + qs_cfg->vsi_map_offset] = 0;
        }
        mutex_unlock(qs_cfg->qs_mutex);

        return -ENOMEM;
}

/**
 * __ice_vsi_get_qs - helper function for assigning queues from PF to VSI
 * @qs_cfg: gathered variables needed for pf->vsi queues assignment
 *
 * This function first tries to find contiguous space. If it is not successful,
 * it tries with the scatter approach.
 *
 * Return 0 on success and -ENOMEM in case of no left space in PF queue bitmap
 */
static int __ice_vsi_get_qs(struct ice_qs_cfg *qs_cfg)
{
        int ret = 0;

        ret = __ice_vsi_get_qs_contig(qs_cfg);
        if (ret) {
                /* contig failed, so try with scatter approach */
                qs_cfg->mapping_mode = ICE_VSI_MAP_SCATTER;
                qs_cfg->q_count = min_t(u16, qs_cfg->q_count,
                                        qs_cfg->scatter_count);
                ret = __ice_vsi_get_qs_sc(qs_cfg);
        }
        return ret;
}

/**
 * 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 = ICE_MAX_TXQS,
                .q_count = vsi->alloc_txq,
                .scatter_count = ICE_MAX_SCATTER_TXQS,
                .vsi_map = vsi->txq_map,
                .vsi_map_offset = 0,
                .mapping_mode = vsi->tx_mapping_mode
        };
        struct ice_qs_cfg rx_qs_cfg = {
                .qs_mutex = &pf->avail_q_mutex,
                .pf_map = pf->avail_rxqs,
                .pf_map_size = ICE_MAX_RXQS,
                .q_count = vsi->alloc_rxq,
                .scatter_count = ICE_MAX_SCATTER_RXQS,
                .vsi_map = vsi->rxq_map,
                .vsi_map_offset = 0,
                .mapping_mode = vsi->rx_mapping_mode
        };
        int ret = 0;

        vsi->tx_mapping_mode = ICE_VSI_MAP_CONTIG;
        vsi->rx_mapping_mode = ICE_VSI_MAP_CONTIG;

        ret = __ice_vsi_get_qs(&tx_qs_cfg);
        if (!ret)
                ret = __ice_vsi_get_qs(&rx_qs_cfg);

        return ret;
}

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

        mutex_lock(&pf->avail_q_mutex);

        for (i = 0; i < vsi->alloc_txq; i++) {
                clear_bit(vsi->txq_map[i], pf->avail_txqs);
                vsi->txq_map[i] = ICE_INVAL_Q_INDEX;
        }

        for (i = 0; i < vsi->alloc_rxq; 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_rss_clean - Delete RSS related VSI structures that hold user inputs
 * @vsi: the VSI being removed
 */
static void ice_rss_clean(struct ice_vsi *vsi)
{
        struct ice_pf *pf;

        pf = vsi->back;

        if (vsi->rss_hkey_user)
                devm_kfree(&pf->pdev->dev, vsi->rss_hkey_user);
        if (vsi->rss_lut_user)
                devm_kfree(&pf->pdev->dev, vsi->rss_lut_user);
}

/**
 * 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_PF:
                /* PF VSI will inherit RSS instance of PF */
                vsi->rss_table_size = cap->rss_table_size;
                vsi->rss_size = min_t(int, 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_VF:
                /* VF VSI will gets 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 = min_t(int, num_online_cpus(),
                                      BIT(cap->rss_table_entry_width));
                vsi->rss_lut_type = ICE_AQC_GSET_RSS_LUT_TABLE_TYPE_VSI;
                break;
        default:
                dev_warn(&pf->pdev->dev, "Unknown VSI type %d\n",
                         vsi->type);
                break;
        }
}

/**
 * ice_set_dflt_vsi_ctx - Set default VSI context before adding a VSI
 * @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_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;
        /* By default bits 3 and 4 in vlan_flags are 0's which results in legacy
         * behavior (show VLAN, DEI, and UP) in descriptor. Also, allow all
         * packets untagged/tagged.
         */
        ctxt->info.vlan_flags = ((ICE_AQ_VSI_VLAN_MODE_ALL &
                                  ICE_AQ_VSI_VLAN_MODE_M) >>
                                 ICE_AQ_VSI_VLAN_MODE_S);
        /* 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 void ice_vsi_setup_q_map(struct ice_vsi *vsi, struct ice_vsi_ctx *ctxt)
{
        u16 offset = 0, qmap = 0, tx_count = 0;
        u16 qcount_tx = vsi->alloc_txq;
        u16 qcount_rx = vsi->alloc_rxq;
        u16 tx_numq_tc, rx_numq_tc;
        u16 pow = 0, max_rss = 0;
        bool ena_tc0 = false;
        u8 netdev_tc = 0;
        int i;

        /* at least TC0 should be enabled by default */
        if (vsi->tc_cfg.numtc) {
                if (!(vsi->tc_cfg.ena_tc & BIT(0)))
                        ena_tc0 = true;
        } else {
                ena_tc0 = true;
        }

        if (ena_tc0) {
                vsi->tc_cfg.numtc++;
                vsi->tc_cfg.ena_tc |= 1;
        }

        rx_numq_tc = qcount_rx / vsi->tc_cfg.numtc;
        if (!rx_numq_tc)
                rx_numq_tc = 1;
        tx_numq_tc = qcount_tx / vsi->tc_cfg.numtc;
        if (!tx_numq_tc)
                tx_numq_tc = 1;

        /* 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
         */

        qcount_rx = rx_numq_tc;

        /* qcount will change if RSS is enabled */
        if (test_bit(ICE_FLAG_RSS_ENA, vsi->back->flags)) {
                if (vsi->type == ICE_VSI_PF || vsi->type == ICE_VSI_VF) {
                        if (vsi->type == ICE_VSI_PF)
                                max_rss = ICE_MAX_LG_RSS_QS;
                        else
                                max_rss = ICE_MAX_SMALL_RSS_QS;
                        qcount_rx = min_t(int, rx_numq_tc, max_rss);
                        qcount_rx = min_t(int, qcount_rx, vsi->rss_size);
                }
        }

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

        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 = qcount_rx;
                vsi->tc_cfg.tc_info[i].qcount_tx = tx_numq_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 += qcount_rx;
                tx_count += tx_numq_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 = qcount_rx;

        vsi->num_txq = tx_count;

        if (vsi->type == ICE_VSI_VF && vsi->num_txq != vsi->num_rxq) {
                dev_dbg(&vsi->back->pdev->dev, "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);
}

/**
 * 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 ice_pf *pf;

        pf = vsi->back;

        switch (vsi->type) {
        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_warn(&pf->pdev->dev, "Unknown VSI type %d\n", 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);
}

/**
 * ice_vsi_init - Create and initialize a VSI
 * @vsi: the VSI being configured
 *
 * 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)
{
        struct ice_pf *pf = vsi->back;
        struct ice_hw *hw = &pf->hw;
        struct ice_vsi_ctx *ctxt;
        int ret = 0;

        ctxt = devm_kzalloc(&pf->pdev->dev, sizeof(*ctxt), GFP_KERNEL);
        if (!ctxt)
                return -ENOMEM;

        ctxt->info = vsi->info;
        switch (vsi->type) {
        case ICE_VSI_PF:
                ctxt->flags = ICE_AQ_VSI_TYPE_PF;
                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_id + hw->func_caps.vf_base_id;
                break;
        default:
                return -ENODEV;
        }

        ice_set_dflt_vsi_ctx(ctxt);
        /* 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))
                ice_set_rss_vsi_ctx(ctxt, vsi);

        ctxt->info.sw_id = vsi->port_info->sw_id;
        ice_vsi_setup_q_map(vsi, ctxt);

        /* Enable MAC Antispoof with new VSI being initialized or updated */
        if (vsi->type == ICE_VSI_VF && pf->vf[vsi->vf_id].spoofchk) {
                ctxt->info.valid_sections |=
                        cpu_to_le16(ICE_AQ_VSI_PROP_SECURITY_VALID);
                ctxt->info.sec_flags |=
                        ICE_AQ_VSI_SEC_FLAG_ENA_MAC_ANTI_SPOOF;
        }

        ret = ice_add_vsi(hw, vsi->idx, ctxt, NULL);
        if (ret) {
                dev_err(&pf->pdev->dev,
                        "Add VSI failed, err %d\n", ret);
                return -EIO;
        }

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

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

        devm_kfree(&pf->pdev->dev, ctxt);
        return ret;
}

/**
 * ice_free_q_vector - Free memory allocated for a specific interrupt vector
 * @vsi: VSI having the memory freed
 * @v_idx: index of the vector to be freed
 */
static void ice_free_q_vector(struct ice_vsi *vsi, int v_idx)
{
        struct ice_q_vector *q_vector;
        struct ice_pf *pf = vsi->back;
        struct ice_ring *ring;

        if (!vsi->q_vectors[v_idx]) {
                dev_dbg(&pf->pdev->dev, "Queue vector at index %d not found\n",
                        v_idx);
                return;
        }
        q_vector = vsi->q_vectors[v_idx];

        ice_for_each_ring(ring, q_vector->tx)
                ring->q_vector = NULL;
        ice_for_each_ring(ring, q_vector->rx)
                ring->q_vector = NULL;

        /* only VSI with an associated netdev is set up with NAPI */
        if (vsi->netdev)
                netif_napi_del(&q_vector->napi);

        devm_kfree(&pf->pdev->dev, q_vector);
        vsi->q_vectors[v_idx] = NULL;
}

/**
 * ice_vsi_free_q_vectors - Free memory allocated for interrupt vectors
 * @vsi: the VSI having memory freed
 */
void ice_vsi_free_q_vectors(struct ice_vsi *vsi)
{
        int v_idx;

        ice_for_each_q_vector(vsi, v_idx)
                ice_free_q_vector(vsi, v_idx);
}

/**
 * ice_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
 * @vsi: the VSI being configured
 * @v_idx: index of the vector in the VSI struct
 *
 * We allocate one q_vector. If allocation fails we return -ENOMEM.
 */
static int ice_vsi_alloc_q_vector(struct ice_vsi *vsi, int v_idx)
{
        struct ice_pf *pf = vsi->back;
        struct ice_q_vector *q_vector;

        /* allocate q_vector */
        q_vector = devm_kzalloc(&pf->pdev->dev, sizeof(*q_vector), GFP_KERNEL);
        if (!q_vector)
                return -ENOMEM;

        q_vector->vsi = vsi;
        q_vector->v_idx = v_idx;
        if (vsi->type == ICE_VSI_VF)
                goto out;
        /* only set affinity_mask if the CPU is online */
        if (cpu_online(v_idx))
                cpumask_set_cpu(v_idx, &q_vector->affinity_mask);

        /* This will not be called in the driver load path because the netdev
         * will not be created yet. All other cases with register the NAPI
         * handler here (i.e. resume, reset/rebuild, etc.)
         */
        if (vsi->netdev)
                netif_napi_add(vsi->netdev, &q_vector->napi, ice_napi_poll,
                               NAPI_POLL_WEIGHT);

out:
        /* tie q_vector and VSI together */
        vsi->q_vectors[v_idx] = q_vector;

        return 0;
}

/**
 * ice_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
 * @vsi: the VSI being configured
 *
 * We allocate one q_vector per queue interrupt. If allocation fails we
 * return -ENOMEM.
 */
static int ice_vsi_alloc_q_vectors(struct ice_vsi *vsi)
{
        struct ice_pf *pf = vsi->back;
        int v_idx = 0, num_q_vectors;
        int err;

        if (vsi->q_vectors[0]) {
                dev_dbg(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
                        vsi->vsi_num);
                return -EEXIST;
        }

        if (test_bit(ICE_FLAG_MSIX_ENA, pf->flags)) {
                num_q_vectors = vsi->num_q_vectors;
        } else {
                err = -EINVAL;
                goto err_out;
        }

        for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
                err = ice_vsi_alloc_q_vector(vsi, v_idx);
                if (err)
                        goto err_out;
        }

        return 0;

err_out:
        while (v_idx--)
                ice_free_q_vector(vsi, v_idx);

        dev_err(&pf->pdev->dev,
                "Failed to allocate %d q_vector for VSI %d, ret=%d\n",
                vsi->num_q_vectors, vsi->vsi_num, err);
        vsi->num_q_vectors = 0;
        return err;
}

/**
 * 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;
        int num_q_vectors = 0;

        if (vsi->sw_base_vector || vsi->hw_base_vector) {
                dev_dbg(&pf->pdev->dev, "VSI %d has non-zero HW base vector %d or SW base vector %d\n",
                        vsi->vsi_num, vsi->hw_base_vector, vsi->sw_base_vector);
                return -EEXIST;
        }

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

        switch (vsi->type) {
        case ICE_VSI_PF:
                num_q_vectors = vsi->num_q_vectors;
                /* reserve slots from OS requested IRQs */
                vsi->sw_base_vector = ice_get_res(pf, pf->sw_irq_tracker,
                                                  num_q_vectors, vsi->idx);
                if (vsi->sw_base_vector < 0) {
                        dev_err(&pf->pdev->dev,
                                "Failed to get tracking for %d SW vectors for VSI %d, err=%d\n",
                                num_q_vectors, vsi->vsi_num,
                                vsi->sw_base_vector);
                        return -ENOENT;
                }
                pf->num_avail_sw_msix -= num_q_vectors;

                /* reserve slots from HW interrupts */
                vsi->hw_base_vector = ice_get_res(pf, pf->hw_irq_tracker,
                                                  num_q_vectors, vsi->idx);
                break;
        case ICE_VSI_VF:
                /* take VF misc vector and data vectors into account */
                num_q_vectors = pf->num_vf_msix;
                /* For VF VSI, reserve slots only from HW interrupts */
                vsi->hw_base_vector = ice_get_res(pf, pf->hw_irq_tracker,
                                                  num_q_vectors, vsi->idx);
                break;
        default:
                dev_warn(&pf->pdev->dev, "Unknown VSI type %d\n", vsi->type);
                break;
        }

        if (vsi->hw_base_vector < 0) {
                dev_err(&pf->pdev->dev,
                        "Failed to get tracking for %d HW vectors for VSI %d, err=%d\n",
                        num_q_vectors, vsi->vsi_num, vsi->hw_base_vector);
                if (vsi->type != ICE_VSI_VF) {
                        ice_free_res(pf->sw_irq_tracker,
                                     vsi->sw_base_vector, vsi->idx);
                        pf->num_avail_sw_msix += num_q_vectors;
                }
                return -ENOENT;
        }

        pf->num_avail_hw_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;

        if (vsi->tx_rings) {
                for (i = 0; i < vsi->alloc_txq; i++) {
                        if (vsi->tx_rings[i]) {
                                kfree_rcu(vsi->tx_rings[i], rcu);
                                vsi->tx_rings[i] = NULL;
                        }
                }
        }
        if (vsi->rx_rings) {
                for (i = 0; i < vsi->alloc_rxq; i++) {
                        if (vsi->rx_rings[i]) {
                                kfree_rcu(vsi->rx_rings[i], rcu);
                                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)
{
        struct ice_pf *pf = vsi->back;
        int i;

        /* Allocate Tx rings */
        for (i = 0; i < vsi->alloc_txq; i++) {
                struct ice_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->ring_active = false;
                ring->vsi = vsi;
                ring->dev = &pf->pdev->dev;
                ring->count = vsi->num_tx_desc;
                vsi->tx_rings[i] = ring;
        }

        /* Allocate Rx rings */
        for (i = 0; i < vsi->alloc_rxq; i++) {
                struct ice_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->ring_active = false;
                ring->vsi = vsi;
                ring->netdev = vsi->netdev;
                ring->dev = &pf->pdev->dev;
                ring->count = vsi->num_rx_desc;
                vsi->rx_rings[i] = ring;
        }

        return 0;

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

/**
 * ice_vsi_map_rings_to_vectors - Map VSI rings to interrupt vectors
 * @vsi: the VSI being configured
 *
 * This function maps descriptor rings to the queue-specific vectors allotted
 * through the MSI-X enabling code. On a constrained vector budget, we map Tx
 * and Rx rings to the vector as "efficiently" as possible.
 */
#ifdef CONFIG_DCB
void ice_vsi_map_rings_to_vectors(struct ice_vsi *vsi)
#else
static void ice_vsi_map_rings_to_vectors(struct ice_vsi *vsi)
#endif /* CONFIG_DCB */
{
        int q_vectors = vsi->num_q_vectors;
        int tx_rings_rem, rx_rings_rem;
        int v_id;

        /* initially assigning remaining rings count to VSIs num queue value */
        tx_rings_rem = vsi->num_txq;
        rx_rings_rem = vsi->num_rxq;

        for (v_id = 0; v_id < q_vectors; v_id++) {
                struct ice_q_vector *q_vector = vsi->q_vectors[v_id];
                int tx_rings_per_v, rx_rings_per_v, q_id, q_base;

                /* Tx rings mapping to vector */
                tx_rings_per_v = DIV_ROUND_UP(tx_rings_rem, q_vectors - v_id);
                q_vector->num_ring_tx = tx_rings_per_v;
                q_vector->tx.ring = NULL;
                q_vector->tx.itr_idx = ICE_TX_ITR;
                q_base = vsi->num_txq - tx_rings_rem;

                for (q_id = q_base; q_id < (q_base + tx_rings_per_v); q_id++) {
                        struct ice_ring *tx_ring = vsi->tx_rings[q_id];

                        tx_ring->q_vector = q_vector;
                        tx_ring->next = q_vector->tx.ring;
                        q_vector->tx.ring = tx_ring;
                }
                tx_rings_rem -= tx_rings_per_v;

                /* Rx rings mapping to vector */
                rx_rings_per_v = DIV_ROUND_UP(rx_rings_rem, q_vectors - v_id);
                q_vector->num_ring_rx = rx_rings_per_v;
                q_vector->rx.ring = NULL;
                q_vector->rx.itr_idx = ICE_RX_ITR;
                q_base = vsi->num_rxq - rx_rings_rem;

                for (q_id = q_base; q_id < (q_base + rx_rings_per_v); q_id++) {
                        struct ice_ring *rx_ring = vsi->rx_rings[q_id];

                        rx_ring->q_vector = q_vector;
                        rx_ring->next = q_vector->rx.ring;
                        q_vector->rx.ring = rx_ring;
                }
                rx_rings_rem -= rx_rings_per_v;
        }
}

/**
 * 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.
 */
int ice_vsi_manage_rss_lut(struct ice_vsi *vsi, bool ena)
{
        int err = 0;
        u8 *lut;

        lut = devm_kzalloc(&vsi->back->pdev->dev, vsi->rss_table_size,
                           GFP_KERNEL);
        if (!lut)
                return -ENOMEM;

        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);
        }

        err = ice_set_rss(vsi, NULL, lut, vsi->rss_table_size);
        devm_kfree(&vsi->back->pdev->dev, lut);
        return err;
}

/**
 * ice_vsi_cfg_rss_lut_key - Configure RSS params for a VSI
 * @vsi: VSI to be configured
 */
static int ice_vsi_cfg_rss_lut_key(struct ice_vsi *vsi)
{
        struct ice_aqc_get_set_rss_keys *key;
        struct ice_pf *pf = vsi->back;
        enum ice_status status;
        int err = 0;
        u8 *lut;

        vsi->rss_size = min_t(int, vsi->rss_size, vsi->num_rxq);

        lut = devm_kzalloc(&pf->pdev->dev, 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);

        status = ice_aq_set_rss_lut(&pf->hw, vsi->idx, vsi->rss_lut_type, lut,
                                    vsi->rss_table_size);

        if (status) {
                dev_err(&pf->pdev->dev,
                        "set_rss_lut failed, error %d\n", status);
                err = -EIO;
                goto ice_vsi_cfg_rss_exit;
        }

        key = devm_kzalloc(&pf->pdev->dev, sizeof(*key), GFP_KERNEL);
        if (!key) {
                err = -ENOMEM;
                goto ice_vsi_cfg_rss_exit;
        }

        if (vsi->rss_hkey_user)
                memcpy(key,
                       (struct ice_aqc_get_set_rss_keys *)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);

        status = ice_aq_set_rss_key(&pf->hw, vsi->idx, key);

        if (status) {
                dev_err(&pf->pdev->dev, "set_rss_key failed, error %d\n",
                        status);
                err = -EIO;
        }

        devm_kfree(&pf->pdev->dev, key);
ice_vsi_cfg_rss_exit:
        devm_kfree(&pf->pdev->dev, lut);
        return err;
}

/**
 * ice_add_mac_to_list - Add a MAC address filter entry to the list
 * @vsi: the VSI to be forwarded to
 * @add_list: pointer to the list which contains MAC filter entries
 * @macaddr: the MAC address to be added.
 *
 * Adds MAC address filter entry to the temp list
 *
 * Returns 0 on success or ENOMEM on failure.
 */
int ice_add_mac_to_list(struct ice_vsi *vsi, struct list_head *add_list,
                        const u8 *macaddr)
{
        struct ice_fltr_list_entry *tmp;
        struct ice_pf *pf = vsi->back;

        tmp = devm_kzalloc(&pf->pdev->dev, sizeof(*tmp), GFP_ATOMIC);
        if (!tmp)
                return -ENOMEM;

        tmp->fltr_info.flag = ICE_FLTR_TX;
        tmp->fltr_info.src_id = ICE_SRC_ID_VSI;
        tmp->fltr_info.lkup_type = ICE_SW_LKUP_MAC;
        tmp->fltr_info.fltr_act = ICE_FWD_TO_VSI;
        tmp->fltr_info.vsi_handle = vsi->idx;
        ether_addr_copy(tmp->fltr_info.l_data.mac.mac_addr, macaddr);

        INIT_LIST_HEAD(&tmp->list_entry);
        list_add(&tmp->list_entry, add_list);

        return 0;
}

/**
 * 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_GORCH(vsi_num), GLV_GORCL(vsi_num),
                          vsi->stat_offsets_loaded, &prev_es->rx_bytes,
                          &cur_es->rx_bytes);

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

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

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

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

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

        ice_stat_update40(hw, GLV_BPTCH(vsi_num), 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_free_fltr_list - free filter lists helper
 * @dev: pointer to the device struct
 * @h: pointer to the list head to be freed
 *
 * Helper function to free filter lists previously created using
 * ice_add_mac_to_list
 */
void ice_free_fltr_list(struct device *dev, struct list_head *h)
{
        struct ice_fltr_list_entry *e, *tmp;

        list_for_each_entry_safe(e, tmp, h, list_entry) {
                list_del(&e->list_entry);
                devm_kfree(dev, e);
        }
}

/**
 * ice_vsi_add_vlan - Add VSI membership for given VLAN
 * @vsi: the VSI being configured
 * @vid: VLAN ID to be added
 */
int ice_vsi_add_vlan(struct ice_vsi *vsi, u16 vid)
{
        struct ice_fltr_list_entry *tmp;
        struct ice_pf *pf = vsi->back;
        LIST_HEAD(tmp_add_list);
        enum ice_status status;
        int err = 0;

        tmp = devm_kzalloc(&pf->pdev->dev, sizeof(*tmp), GFP_KERNEL);
        if (!tmp)
                return -ENOMEM;

        tmp->fltr_info.lkup_type = ICE_SW_LKUP_VLAN;
        tmp->fltr_info.fltr_act = ICE_FWD_TO_VSI;
        tmp->fltr_info.flag = ICE_FLTR_TX;
        tmp->fltr_info.src_id = ICE_SRC_ID_VSI;
        tmp->fltr_info.vsi_handle = vsi->idx;
        tmp->fltr_info.l_data.vlan.vlan_id = vid;

        INIT_LIST_HEAD(&tmp->list_entry);
        list_add(&tmp->list_entry, &tmp_add_list);

        status = ice_add_vlan(&pf->hw, &tmp_add_list);
        if (status) {
                err = -ENODEV;
                dev_err(&pf->pdev->dev, "Failure Adding VLAN %d on VSI %i\n",
                        vid, vsi->vsi_num);
        }

        ice_free_fltr_list(&pf->pdev->dev, &tmp_add_list);
        return err;
}

/**
 * ice_vsi_kill_vlan - Remove VSI membership for a given VLAN
 * @vsi: the VSI being configured
 * @vid: VLAN ID to be removed
 *
 * Returns 0 on success and negative on failure
 */
int ice_vsi_kill_vlan(struct ice_vsi *vsi, u16 vid)
{
        struct ice_fltr_list_entry *list;
        struct ice_pf *pf = vsi->back;
        LIST_HEAD(tmp_add_list);
        enum ice_status status;
        int err = 0;

        list = devm_kzalloc(&pf->pdev->dev, sizeof(*list), GFP_KERNEL);
        if (!list)
                return -ENOMEM;

        list->fltr_info.lkup_type = ICE_SW_LKUP_VLAN;
        list->fltr_info.vsi_handle = vsi->idx;
        list->fltr_info.fltr_act = ICE_FWD_TO_VSI;
        list->fltr_info.l_data.vlan.vlan_id = vid;
        list->fltr_info.flag = ICE_FLTR_TX;
        list->fltr_info.src_id = ICE_SRC_ID_VSI;

        INIT_LIST_HEAD(&list->list_entry);
        list_add(&list->list_entry, &tmp_add_list);

        status = ice_remove_vlan(&pf->hw, &tmp_add_list);
        if (status == ICE_ERR_DOES_NOT_EXIST) {
                dev_dbg(&pf->pdev->dev,
                        "Failed to remove VLAN %d on VSI %i, it does not exist, status: %d\n",
                        vid, vsi->vsi_num, status);
        } else if (status) {
                dev_err(&pf->pdev->dev,
                        "Error removing VLAN %d on vsi %i error: %d\n",
                        vid, vsi->vsi_num, status);
                err = -EIO;
        }

        ice_free_fltr_list(&pf->pdev->dev, &tmp_add_list);
        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;

        if (vsi->netdev && vsi->netdev->mtu > ETH_DATA_LEN)
                vsi->max_frame = vsi->netdev->mtu +
                        ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
        else
                vsi->max_frame = ICE_RXBUF_2048;

        vsi->rx_buf_len = ICE_RXBUF_2048;
setup_rings:
        /* set up individual rings */
        for (i = 0; i < vsi->num_rxq; i++) {
                int err;

                err = ice_setup_rx_ctx(vsi->rx_rings[i]);
                if (err) {
                        dev_err(&vsi->back->pdev->dev,
                                "ice_setup_rx_ctx failed for RxQ %d, err %d\n",
                                i, 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
 * @offset: offset within vsi->txq_map
 *
 * 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_ring **rings, int offset)
{
        struct ice_aqc_add_tx_qgrp *qg_buf;
        struct ice_aqc_add_txqs_perq *txq;
        struct ice_pf *pf = vsi->back;
        u8 num_q_grps, q_idx = 0;
        enum ice_status status;
        u16 buf_len, i, pf_q;
        int err = 0, tc;

        buf_len = sizeof(*qg_buf);
        qg_buf = devm_kzalloc(&pf->pdev->dev, buf_len, GFP_KERNEL);
        if (!qg_buf)
                return -ENOMEM;

        qg_buf->num_txqs = 1;
        num_q_grps = 1;

        /* set up and configure the Tx queues for each enabled TC */
        ice_for_each_traffic_class(tc) {
                if (!(vsi->tc_cfg.ena_tc & BIT(tc)))
                        break;

                for (i = 0; i < vsi->tc_cfg.tc_info[tc].qcount_tx; i++) {
                        struct ice_tlan_ctx tlan_ctx = { 0 };

                        pf_q = vsi->txq_map[q_idx + offset];
                        ice_setup_tx_ctx(rings[q_idx], &tlan_ctx, pf_q);
                        /* copy context contents into the qg_buf */
                        qg_buf->txqs[0].txq_id = cpu_to_le16(pf_q);
                        ice_set_ctx((u8 *)&tlan_ctx, qg_buf->txqs[0].txq_ctx,
                                    ice_tlan_ctx_info);

                        /* init queue specific tail reg. It is referred as
                         * transmit comm scheduler queue doorbell.
                         */
                        rings[q_idx]->tail =
                                pf->hw.hw_addr + QTX_COMM_DBELL(pf_q);
                        status = ice_ena_vsi_txq(vsi->port_info, vsi->idx, tc,
                                                 i, num_q_grps, qg_buf,
                                                 buf_len, NULL);
                        if (status) {
                                dev_err(&pf->pdev->dev,
                                        "Failed to set LAN Tx queue context, error: %d\n",
                                        status);
                                err = -ENODEV;
                                goto err_cfg_txqs;
                        }

                        /* Add Tx Queue TEID into the VSI Tx ring from the
                         * response. This will complete configuring and
                         * enabling the queue.
                         */
                        txq = &qg_buf->txqs[0];
                        if (pf_q == le16_to_cpu(txq->txq_id))
                                rings[q_idx]->txq_teid =
                                        le32_to_cpu(txq->q_teid);

                        q_idx++;
                }
        }
err_cfg_txqs:
        devm_kfree(&pf->pdev->dev, 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, 0);
}

/**
 * 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.
 */
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_cfg_itr_gran - set the ITR granularity to 2 usecs if not already set
 * @hw: board specific structure
 */
static void ice_cfg_itr_gran(struct ice_hw *hw)
{
        u32 regval = rd32(hw, GLINT_CTL);

        /* no need to update global register if ITR gran is already set */
        if (!(regval & GLINT_CTL_DIS_AUTOMASK_M) &&
            (((regval & GLINT_CTL_ITR_GRAN_200_M) >>
             GLINT_CTL_ITR_GRAN_200_S) == ICE_ITR_GRAN_US) &&
            (((regval & GLINT_CTL_ITR_GRAN_100_M) >>
             GLINT_CTL_ITR_GRAN_100_S) == ICE_ITR_GRAN_US) &&
            (((regval & GLINT_CTL_ITR_GRAN_50_M) >>
             GLINT_CTL_ITR_GRAN_50_S) == ICE_ITR_GRAN_US) &&
            (((regval & GLINT_CTL_ITR_GRAN_25_M) >>
              GLINT_CTL_ITR_GRAN_25_S) == ICE_ITR_GRAN_US))
                return;

        regval = ((ICE_ITR_GRAN_US << GLINT_CTL_ITR_GRAN_200_S) &
                  GLINT_CTL_ITR_GRAN_200_M) |
                 ((ICE_ITR_GRAN_US << GLINT_CTL_ITR_GRAN_100_S) &
                  GLINT_CTL_ITR_GRAN_100_M) |
                 ((ICE_ITR_GRAN_US << GLINT_CTL_ITR_GRAN_50_S) &
                  GLINT_CTL_ITR_GRAN_50_M) |
                 ((ICE_ITR_GRAN_US << GLINT_CTL_ITR_GRAN_25_S) &
                  GLINT_CTL_ITR_GRAN_25_M);
        wr32(hw, GLINT_CTL, regval);
}

/**
 * ice_cfg_itr - configure the initial interrupt throttle values
 * @hw: pointer to the HW structure
 * @q_vector: interrupt vector that's being configured
 *
 * Configure interrupt throttling values for the ring containers that are
 * associated with the interrupt vector passed in.
 */
static void
ice_cfg_itr(struct ice_hw *hw, struct ice_q_vector *q_vector)
{
        ice_cfg_itr_gran(hw);

        if (q_vector->num_ring_rx) {
                struct ice_ring_container *rc = &q_vector->rx;

                /* if this value is set then don't overwrite with default */
                if (!rc->itr_setting)
                        rc->itr_setting = ICE_DFLT_RX_ITR;

                rc->target_itr = ITR_TO_REG(rc->itr_setting);
                rc->next_update = jiffies + 1;
                rc->current_itr = rc->target_itr;
                wr32(hw, GLINT_ITR(rc->itr_idx, q_vector->reg_idx),
                     ITR_REG_ALIGN(rc->current_itr) >> ICE_ITR_GRAN_S);
        }

        if (q_vector->num_ring_tx) {
                struct ice_ring_container *rc = &q_vector->tx;

                /* if this value is set then don't overwrite with default */
                if (!rc->itr_setting)
                        rc->itr_setting = ICE_DFLT_TX_ITR;

                rc->target_itr = ITR_TO_REG(rc->itr_setting);
                rc->next_update = jiffies + 1;
                rc->current_itr = rc->target_itr;
                wr32(hw, GLINT_ITR(rc->itr_idx, q_vector->reg_idx),
                     ITR_REG_ALIGN(rc->current_itr) >> ICE_ITR_GRAN_S);
        }
}

/**
 * ice_vsi_cfg_msix - MSIX mode Interrupt Config in the HW
 * @vsi: the VSI being configured
 */
void ice_vsi_cfg_msix(struct ice_vsi *vsi)
{
        struct ice_pf *pf = vsi->back;
        struct ice_hw *hw = &pf->hw;
        u32 txq = 0, rxq = 0;
        int i, q;

        for (i = 0; i < vsi->num_q_vectors; i++) {
                struct ice_q_vector *q_vector = vsi->q_vectors[i];
                u16 reg_idx = q_vector->reg_idx;

                ice_cfg_itr(hw, q_vector);

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

                /* 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++) {
                        int itr_idx = (q_vector->tx.itr_idx <<
                                       QINT_TQCTL_ITR_INDX_S) &
                                QINT_TQCTL_ITR_INDX_M;
                        u32 val;

                        if (vsi->type == ICE_VSI_VF)
                                val = QINT_TQCTL_CAUSE_ENA_M | itr_idx |
                                      (((i + 1) << QINT_TQCTL_MSIX_INDX_S) &
                                       QINT_TQCTL_MSIX_INDX_M);
                        else
                                val = QINT_TQCTL_CAUSE_ENA_M | itr_idx |
                                      ((reg_idx << QINT_TQCTL_MSIX_INDX_S) &
                                       QINT_TQCTL_MSIX_INDX_M);
                        wr32(hw, QINT_TQCTL(vsi->txq_map[txq]), val);
                        txq++;
                }

                for (q = 0; q < q_vector->num_ring_rx; q++) {
                        int itr_idx = (q_vector->rx.itr_idx <<
                                       QINT_RQCTL_ITR_INDX_S) &
                                QINT_RQCTL_ITR_INDX_M;
                        u32 val;

                        if (vsi->type == ICE_VSI_VF)
                                val = QINT_RQCTL_CAUSE_ENA_M | itr_idx |
                                        (((i + 1) << QINT_RQCTL_MSIX_INDX_S) &
                                         QINT_RQCTL_MSIX_INDX_M);
                        else
                                val = QINT_RQCTL_CAUSE_ENA_M | itr_idx |
                                        ((reg_idx << QINT_RQCTL_MSIX_INDX_S) &
                                         QINT_RQCTL_MSIX_INDX_M);
                        wr32(hw, QINT_RQCTL(vsi->rxq_map[rxq]), val);
                        rxq++;
                }
        }

        ice_flush(hw);
}

/**
 * ice_vsi_manage_vlan_insertion - Manage VLAN insertion for the VSI for Tx
 * @vsi: the VSI being changed
 */
int ice_vsi_manage_vlan_insertion(struct ice_vsi *vsi)
{
        struct device *dev = &vsi->back->pdev->dev;
        struct ice_hw *hw = &vsi->back->hw;
        struct ice_vsi_ctx *ctxt;
        enum ice_status status;
        int ret = 0;

        ctxt = devm_kzalloc(dev, sizeof(*ctxt), GFP_KERNEL);
        if (!ctxt)
                return -ENOMEM;

        /* Here we are configuring the VSI to let the driver add VLAN tags by
         * setting vlan_flags to ICE_AQ_VSI_VLAN_MODE_ALL. The actual VLAN tag
         * insertion happens in the Tx hot path, in ice_tx_map.
         */
        ctxt->info.vlan_flags = ICE_AQ_VSI_VLAN_MODE_ALL;

        /* Preserve existing VLAN strip setting */
        ctxt->info.vlan_flags |= (vsi->info.vlan_flags &
                                  ICE_AQ_VSI_VLAN_EMOD_M);

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

        status = ice_update_vsi(hw, vsi->idx, ctxt, NULL);
        if (status) {
                dev_err(dev, "update VSI for VLAN insert failed, err %d aq_err %d\n",
                        status, hw->adminq.sq_last_status);
                ret = -EIO;
                goto out;
        }

        vsi->info.vlan_flags = ctxt->info.vlan_flags;
out:
        devm_kfree(dev, ctxt);
        return ret;
}

/**
 * ice_vsi_manage_vlan_stripping - Manage VLAN stripping for the VSI for Rx
 * @vsi: the VSI being changed
 * @ena: boolean value indicating if this is a enable or disable request
 */
int ice_vsi_manage_vlan_stripping(struct ice_vsi *vsi, bool ena)
{
        struct device *dev = &vsi->back->pdev->dev;
        struct ice_hw *hw = &vsi->back->hw;
        struct ice_vsi_ctx *ctxt;
        enum ice_status status;
        int ret = 0;

        ctxt = devm_kzalloc(dev, sizeof(*ctxt), GFP_KERNEL);
        if (!ctxt)
                return -ENOMEM;

        /* Here we are configuring what the VSI should do with the VLAN tag in
         * the Rx packet. We can either leave the tag in the packet or put it in
         * the Rx descriptor.
         */
        if (ena)
                /* Strip VLAN tag from Rx packet and put it in the desc */
                ctxt->info.vlan_flags = ICE_AQ_VSI_VLAN_EMOD_STR_BOTH;
        else
                /* Disable stripping. Leave tag in packet */
                ctxt->info.vlan_flags = ICE_AQ_VSI_VLAN_EMOD_NOTHING;

        /* Allow all packets untagged/tagged */
        ctxt->info.vlan_flags |= ICE_AQ_VSI_VLAN_MODE_ALL;

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

        status = ice_update_vsi(hw, vsi->idx, ctxt, NULL);
        if (status) {
                dev_err(dev, "update VSI for VLAN strip failed, ena = %d err %d aq_err %d\n",
                        ena, status, hw->adminq.sq_last_status);
                ret = -EIO;
                goto out;
        }

        vsi->info.vlan_flags = ctxt->info.vlan_flags;
out:
        devm_kfree(dev, ctxt);
        return ret;
}

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

/**
 * ice_vsi_stop_rx_rings - stop VSI's Rx rings
 * @vsi: the VSI
 *
 * Returns 0 on success and a negative value on error
 */
int ice_vsi_stop_rx_rings(struct ice_vsi *vsi)
{
        return ice_vsi_ctrl_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
 * @offset: offset within vsi->txq_map
 */
static int
ice_vsi_stop_tx_rings(struct ice_vsi *vsi, enum ice_disq_rst_src rst_src,
                      u16 rel_vmvf_num, struct ice_ring **rings, int offset)
{
        struct ice_pf *pf = vsi->back;
        struct ice_hw *hw = &pf->hw;
        int tc, q_idx = 0, err = 0;
        u16 *q_ids, *q_handles, i;
        enum ice_status status;
        u32 *q_teids, val;

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

        q_teids = devm_kcalloc(&pf->pdev->dev, vsi->num_txq, sizeof(*q_teids),
                               GFP_KERNEL);
        if (!q_teids)
                return -ENOMEM;

        q_ids = devm_kcalloc(&pf->pdev->dev, vsi->num_txq, sizeof(*q_ids),
                             GFP_KERNEL);
        if (!q_ids) {
                err = -ENOMEM;
                goto err_alloc_q_ids;
        }

        q_handles = devm_kcalloc(&pf->pdev->dev, vsi->num_txq,
                                 sizeof(*q_handles), GFP_KERNEL);
        if (!q_handles) {
                err = -ENOMEM;
                goto err_alloc_q_handles;
        }

        /* set up the Tx queue list to be disabled for each enabled TC */
        ice_for_each_traffic_class(tc) {
                if (!(vsi->tc_cfg.ena_tc & BIT(tc)))
                        break;

                for (i = 0; i < vsi->tc_cfg.tc_info[tc].qcount_tx; i++) {
                        if (!rings || !rings[q_idx] ||
                            !rings[q_idx]->q_vector) {
                                err = -EINVAL;
                                goto err_out;
                        }

                        q_ids[i] = vsi->txq_map[q_idx + offset];
                        q_teids[i] = rings[q_idx]->txq_teid;
                        q_handles[i] = i;

                        /* clear cause_ena bit for disabled queues */
                        val = rd32(hw, QINT_TQCTL(rings[i]->reg_idx));
                        val &= ~QINT_TQCTL_CAUSE_ENA_M;
                        wr32(hw, QINT_TQCTL(rings[i]->reg_idx), val);

                        /* software is expected to wait for 100 ns */
                        ndelay(100);

                        /* trigger a software interrupt for the vector
                         * associated to the queue to schedule NAPI handler
                         */
                        wr32(hw, GLINT_DYN_CTL(rings[i]->q_vector->reg_idx),
                             GLINT_DYN_CTL_SWINT_TRIG_M |
                             GLINT_DYN_CTL_INTENA_MSK_M);
                        q_idx++;
                }
                status = ice_dis_vsi_txq(vsi->port_info, vsi->idx, tc,
                                         vsi->num_txq, q_handles, q_ids,
                                         q_teids, rst_src, rel_vmvf_num, NULL);

                /* if the disable queue command was exercised during an active
                 * reset flow, ICE_ERR_RESET_ONGOING is returned. This is not
                 * an error as the reset operation disables queues at the
                 * hardware level anyway.
                 */
                if (status == ICE_ERR_RESET_ONGOING) {
                        dev_dbg(&pf->pdev->dev,
                                "Reset in progress. LAN Tx queues already disabled\n");
                } else if (status) {
                        dev_err(&pf->pdev->dev,
                                "Failed to disable LAN Tx queues, error: %d\n",
                                status);
                        err = -ENODEV;
                }
        }

err_out:
        devm_kfree(&pf->pdev->dev, q_handles);

err_alloc_q_handles:
        devm_kfree(&pf->pdev->dev, q_ids);

err_alloc_q_ids:
        devm_kfree(&pf->pdev->dev, q_teids);

        return err;
}

/**
 * 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,
                                     0);
}

/**
 * ice_cfg_vlan_pruning - enable or disable VLAN pruning on the VSI
 * @vsi: VSI to enable or disable VLAN pruning on
 * @ena: set to true to enable VLAN pruning and false to disable it
 * @vlan_promisc: enable valid security flags if not in VLAN promiscuous mode
 *
 * returns 0 if VSI is updated, negative otherwise
 */
int ice_cfg_vlan_pruning(struct ice_vsi *vsi, bool ena, bool vlan_promisc)
{
        struct ice_vsi_ctx *ctxt;
        struct device *dev;
        struct ice_pf *pf;
        int status;

        if (!vsi)
                return -EINVAL;

        pf = vsi->back;
        dev = &pf->pdev->dev;
        ctxt = devm_kzalloc(dev, sizeof(*ctxt), GFP_KERNEL);
        if (!ctxt)
                return -ENOMEM;

        ctxt->info = vsi->info;

        if (ena) {
                ctxt->info.sec_flags |=
                        ICE_AQ_VSI_SEC_TX_VLAN_PRUNE_ENA <<
                        ICE_AQ_VSI_SEC_TX_PRUNE_ENA_S;
                ctxt->info.sw_flags2 |= ICE_AQ_VSI_SW_FLAG_RX_VLAN_PRUNE_ENA;
        } else {
                ctxt->info.sec_flags &=
                        ~(ICE_AQ_VSI_SEC_TX_VLAN_PRUNE_ENA <<
                          ICE_AQ_VSI_SEC_TX_PRUNE_ENA_S);
                ctxt->info.sw_flags2 &= ~ICE_AQ_VSI_SW_FLAG_RX_VLAN_PRUNE_ENA;
        }

        if (!vlan_promisc)
                ctxt->info.valid_sections =
                        cpu_to_le16(ICE_AQ_VSI_PROP_SECURITY_VALID |
                                    ICE_AQ_VSI_PROP_SW_VALID);

        status = ice_update_vsi(&pf->hw, vsi->idx, ctxt, NULL);
        if (status) {
                netdev_err(vsi->netdev, "%sabling VLAN pruning on VSI handle: %d, VSI HW ID: %d failed, err = %d, aq_err = %d\n",
                           ena ? "En" : "Dis", vsi->idx, vsi->vsi_num, status,
                           pf->hw.adminq.sq_last_status);
                goto err_out;
        }

        vsi->info.sec_flags = ctxt->info.sec_flags;
        vsi->info.sw_flags2 = ctxt->info.sw_flags2;

        devm_kfree(dev, ctxt);
        return 0;

err_out:
        devm_kfree(dev, ctxt);
        return -EIO;
}

static void ice_vsi_set_tc_cfg(struct ice_vsi *vsi)
{
        struct ice_dcbx_cfg *cfg = &vsi->port_info->local_dcbx_cfg;

        vsi->tc_cfg.ena_tc = ice_dcb_get_ena_tc(cfg);
        vsi->tc_cfg.numtc = ice_dcb_get_num_tc(cfg);
}

/**
 * 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(&vsi->back->pdev->dev,
                                "Failed to set reg_idx on q_vector %d VSI %d\n",
                                i, vsi->vsi_num);
                        goto clear_reg_idx;
                }

                q_vector->reg_idx = q_vector->v_idx + vsi->hw_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_vsi_setup - Set up a VSI by a given type
 * @pf: board private structure
 * @pi: pointer to the port_info instance
 * @type: VSI type
 * @vf_id: defines VF ID to which this VSI connects. This field is meant to be
 *         used only for ICE_VSI_VF VSI type. For other VSI types, should
 *         fill-in ICE_INVAL_VFID as input.
 *
 * 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 type, u16 vf_id)
{
        u16 max_txqs[ICE_MAX_TRAFFIC_CLASS] = { 0 };
        struct device *dev = &pf->pdev->dev;
        struct ice_vsi *vsi;
        int ret, i;

        if (type == ICE_VSI_VF)
                vsi = ice_vsi_alloc(pf, type, vf_id);
        else
                vsi = ice_vsi_alloc(pf, type, ICE_INVAL_VFID);

        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_VF)
                vsi->vf_id = vf_id;

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

        /* 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);
        if (ret)
                goto unroll_get_qs;

        switch (vsi->type) {
        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);

                /* 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:
                /* 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;

                /* Setup Vector base only during VF init phase or when VF asks
                 * for more vectors than assigned number. In all other cases,
                 * assign hw_base_vector to the value given earlier.
                 */
                if (test_bit(ICE_VF_STATE_CFG_INTR, pf->vf[vf_id].vf_states)) {
                        ret = ice_vsi_setup_vector_base(vsi);
                        if (ret)
                                goto unroll_vector_base;
                } else {
                        vsi->hw_base_vector = pf->vf[vf_id].first_vector_idx;
                }
                ret = ice_vsi_set_q_vectors_reg_idx(vsi);
                if (ret)
                        goto unroll_vector_base;

                pf->q_left_tx -= vsi->alloc_txq;
                pf->q_left_rx -= vsi->alloc_rxq;
                break;
        default:
                /* clean up the resources and exit */
                goto unroll_vsi_init;
        }

        /* configure VSI nodes based on number of queues and TC's */
        for (i = 0; i < vsi->tc_cfg.numtc; i++)
                max_txqs[i] = pf->num_lan_tx;

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

        return vsi;

unroll_vector_base:
        /* reclaim SW interrupts back to the common pool */
        ice_free_res(pf->sw_irq_tracker, vsi->sw_base_vector, vsi->idx);
        pf->num_avail_sw_msix += vsi->num_q_vectors;
        /* reclaim HW interrupt back to the common pool */
        ice_free_res(pf->hw_irq_tracker, vsi->hw_base_vector, vsi->idx);
        pf->num_avail_hw_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);
        pf->q_left_tx += vsi->alloc_txq;
        pf->q_left_rx += vsi->alloc_rxq;
        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;
        u16 vector = vsi->hw_base_vector;
        struct ice_hw *hw = &pf->hw;
        u32 txq = 0;
        u32 rxq = 0;
        int i, q;

        for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
                struct ice_q_vector *q_vector = vsi->q_vectors[i];

                wr32(hw, GLINT_ITR(ICE_IDX_ITR0, vector), 0);
                wr32(hw, GLINT_ITR(ICE_IDX_ITR1, vector), 0);
                for (q = 0; q < q_vector->num_ring_tx; q++) {
                        wr32(hw, QINT_TQCTL(vsi->txq_map[txq]), 0);
                        txq++;
                }

                for (q = 0; q < q_vector->num_ring_rx; q++) {
                        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->sw_base_vector;

        if (test_bit(ICE_FLAG_MSIX_ENA, pf->flags)) {
                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_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 */
                        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(&pf->pdev->dev, 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_DOWN, vsi->state))
                ice_down(vsi);

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

/**
 * 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->num_entries)
                return -EINVAL;

        id |= ICE_RES_VALID_BIT;
        for (i = index; i < res->num_entries && 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)
{
        int start = res->search_hint;
        int end = start;

        if ((start + needed) > res->num_entries)
                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->num_entries)
                                break;
                }

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

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

                        if (end == res->num_entries)
                                end = 0;

                        res->search_hint = end;
                        return start;
                }
        } while (1);

        return -ENOMEM;
}

/**
 * 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 -ENOMEM for error
 * The search_hint trick and lack of advanced fit-finding only works
 * because we're highly likely to have all the same sized requests.
 * Linear search time and any fragmentation should be minimal.
 */
int
ice_get_res(struct ice_pf *pf, struct ice_res_tracker *res, u16 needed, u16 id)
{
        int ret;

        if (!res || !pf)
                return -EINVAL;

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

        /* search based on search_hint */
        ret = ice_search_res(res, needed, id);

        if (ret < 0) {
                /* previous search failed. Reset search hint and try again */
                res->search_hint = 0;
                ret = ice_search_res(res, needed, id);
        }

        return ret;
}

/**
 * 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->sw_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 */
        if (test_bit(ICE_FLAG_MSIX_ENA, pf->flags)) {
                ice_for_each_q_vector(vsi, i)
                        wr32(hw, GLINT_DYN_CTL(vsi->q_vectors[i]->reg_idx), 0);

                ice_flush(hw);

                ice_for_each_q_vector(vsi, i)
                        synchronize_irq(pf->msix_entries[i + base].vector);
        }
}

/**
 * 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_vf *vf = NULL;
        struct ice_pf *pf;

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

        if (vsi->type == ICE_VSI_VF)
                vf = &pf->vf[vsi->vf_id];
        /* do not unregister and free netdevs while driver is in the reset
         * recovery pending state. Since reset/rebuild happens through PF
         * service task workqueue, its 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)) {
                ice_napi_del(vsi);
                unregister_netdev(vsi->netdev);
                free_netdev(vsi->netdev);
                vsi->netdev = NULL;
        }

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

        /* Disable VSI and free resources */
        ice_vsi_dis_irq(vsi);
        ice_vsi_close(vsi);

        /* reclaim interrupt vectors back to PF */
        if (vsi->type != ICE_VSI_VF) {
                /* reclaim SW interrupts back to the common pool */
                ice_free_res(pf->sw_irq_tracker, vsi->sw_base_vector, vsi->idx);
                pf->num_avail_sw_msix += vsi->num_q_vectors;
                /* reclaim HW interrupts back to the common pool */
                ice_free_res(pf->hw_irq_tracker, vsi->hw_base_vector, vsi->idx);
                pf->num_avail_hw_msix += vsi->num_q_vectors;
        } else if (test_bit(ICE_VF_STATE_CFG_INTR, vf->vf_states)) {
                /* Reclaim VF resources back only while freeing all VFs or
                 * vector reassignment is requested
                 */
                ice_free_res(pf->hw_irq_tracker, vf->first_vector_idx,
                             vsi->idx);
                pf->num_avail_hw_msix += pf->num_vf_msix;
        }

        ice_remove_vsi_fltr(&pf->hw, vsi->idx);
        ice_rm_vsi_lan_cfg(vsi->port_info, vsi->idx);
        ice_vsi_delete(vsi);
        ice_vsi_free_q_vectors(vsi);
        ice_vsi_clear_rings(vsi);

        ice_vsi_put_qs(vsi);
        pf->q_left_tx += vsi->alloc_txq;
        pf->q_left_rx += vsi->alloc_rxq;

        /* 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 - Rebuild VSI after reset
 * @vsi: VSI to be rebuild
 *
 * Returns 0 on success and negative value on failure
 */
int ice_vsi_rebuild(struct ice_vsi *vsi)
{
        u16 max_txqs[ICE_MAX_TRAFFIC_CLASS] = { 0 };
        struct ice_vf *vf = NULL;
        struct ice_pf *pf;
        int ret, i;

        if (!vsi)
                return -EINVAL;

        pf = vsi->back;
        if (vsi->type == ICE_VSI_VF)
                vf = &pf->vf[vsi->vf_id];

        ice_rm_vsi_lan_cfg(vsi->port_info, vsi->idx);
        ice_vsi_free_q_vectors(vsi);

        if (vsi->type != ICE_VSI_VF) {
                /* reclaim SW interrupts back to the common pool */
                ice_free_res(pf->sw_irq_tracker, vsi->sw_base_vector, vsi->idx);
                pf->num_avail_sw_msix += vsi->num_q_vectors;
                vsi->sw_base_vector = 0;
                /* reclaim HW interrupts back to the common pool */
                ice_free_res(pf->hw_irq_tracker, vsi->hw_base_vector,
                             vsi->idx);
                pf->num_avail_hw_msix += vsi->num_q_vectors;
        } else {
                /* Reclaim VF resources back to the common pool for reset and
                 * and rebuild, with vector reassignment
                 */
                ice_free_res(pf->hw_irq_tracker, vf->first_vector_idx,
                             vsi->idx);
                pf->num_avail_hw_msix += pf->num_vf_msix;
        }
        vsi->hw_base_vector = 0;

        ice_vsi_clear_rings(vsi);
        ice_vsi_free_arrays(vsi, false);
        ice_dev_onetime_setup(&pf->hw);
        if (vsi->type == ICE_VSI_VF)
                ice_vsi_set_num_qs(vsi, vf->vf_id);
        else
                ice_vsi_set_num_qs(vsi, ICE_INVAL_VFID);
        ice_vsi_set_tc_cfg(vsi);

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

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

        switch (vsi->type) {
        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);
                /* 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_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;

                pf->q_left_tx -= vsi->alloc_txq;
                pf->q_left_rx -= vsi->alloc_rxq;
                break;
        default:
                break;
        }

        /* configure VSI nodes based on number of queues and TC's */
        for (i = 0; i < vsi->tc_cfg.numtc; i++)
                max_txqs[i] = pf->num_lan_tx;

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

#ifdef CONFIG_DCB
/**
 * 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
 */
static 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;
        struct ice_dcbx_cfg *dcbcfg;
        u8 netdev_tc;
        int i;

        if (!netdev)
                return;

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

        if (netdev_set_num_tc(netdev, vsi->tc_cfg.numtc))
                return;

        dcbcfg = &pf->hw.port_info->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);

        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_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_vsi_ctx *ctx;
        struct ice_pf *pf = vsi->back;
        enum ice_status status;
        int i, ret = 0;
        u8 num_tc = 0;

        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] = pf->num_lan_tx;
        }

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

        ctx = devm_kzalloc(&pf->pdev->dev, sizeof(*ctx), GFP_KERNEL);
        if (!ctx)
                return -ENOMEM;

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

        ice_vsi_setup_q_map(vsi, ctx);

        /* 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);
        status = ice_update_vsi(&pf->hw, vsi->idx, ctx, NULL);
        if (status) {
                dev_info(&pf->pdev->dev, "Failed VSI Update\n");
                ret = -EIO;
                goto out;
        }

        status = ice_cfg_vsi_lan(vsi->port_info, vsi->idx, vsi->tc_cfg.ena_tc,
                                 max_txqs);

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

        ice_vsi_cfg_netdev_tc(vsi, ena_tc);
out:
        devm_kfree(&pf->pdev->dev, ctx);
        return ret;
}
#endif /* CONFIG_DCB */