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

#include "ice.h"
#include "ice_lib.h"

/**
 * ice_err_to_virt err - translate errors for VF return code
 * @ice_err: error return code
 */
static enum virtchnl_status_code ice_err_to_virt_err(enum ice_status ice_err)
{
        switch (ice_err) {
        case ICE_SUCCESS:
                return VIRTCHNL_STATUS_SUCCESS;
        case ICE_ERR_BAD_PTR:
        case ICE_ERR_INVAL_SIZE:
        case ICE_ERR_DEVICE_NOT_SUPPORTED:
        case ICE_ERR_PARAM:
        case ICE_ERR_CFG:
                return VIRTCHNL_STATUS_ERR_PARAM;
        case ICE_ERR_NO_MEMORY:
                return VIRTCHNL_STATUS_ERR_NO_MEMORY;
        case ICE_ERR_NOT_READY:
        case ICE_ERR_RESET_FAILED:
        case ICE_ERR_FW_API_VER:
        case ICE_ERR_AQ_ERROR:
        case ICE_ERR_AQ_TIMEOUT:
        case ICE_ERR_AQ_FULL:
        case ICE_ERR_AQ_NO_WORK:
        case ICE_ERR_AQ_EMPTY:
                return VIRTCHNL_STATUS_ERR_ADMIN_QUEUE_ERROR;
        default:
                return VIRTCHNL_STATUS_ERR_NOT_SUPPORTED;
        }
}

/**
 * ice_vc_vf_broadcast - Broadcast a message to all VFs on PF
 * @pf: pointer to the PF structure
 * @v_opcode: operation code
 * @v_retval: return value
 * @msg: pointer to the msg buffer
 * @msglen: msg length
 */
static void
ice_vc_vf_broadcast(struct ice_pf *pf, enum virtchnl_ops v_opcode,
                    enum virtchnl_status_code v_retval, u8 *msg, u16 msglen)
{
        struct ice_hw *hw = &pf->hw;
        struct ice_vf *vf = pf->vf;
        int i;

        for (i = 0; i < pf->num_alloc_vfs; i++, vf++) {
                /* Not all vfs are enabled so skip the ones that are not */
                if (!test_bit(ICE_VF_STATE_INIT, vf->vf_states) &&
                    !test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states))
                        continue;

                /* Ignore return value on purpose - a given VF may fail, but
                 * we need to keep going and send to all of them
                 */
                ice_aq_send_msg_to_vf(hw, vf->vf_id, v_opcode, v_retval, msg,
                                      msglen, NULL);
        }
}

/**
 * ice_set_pfe_link - Set the link speed/status of the virtchnl_pf_event
 * @vf: pointer to the VF structure
 * @pfe: pointer to the virtchnl_pf_event to set link speed/status for
 * @ice_link_speed: link speed specified by ICE_AQ_LINK_SPEED_*
 * @link_up: whether or not to set the link up/down
 */
static void
ice_set_pfe_link(struct ice_vf *vf, struct virtchnl_pf_event *pfe,
                 int ice_link_speed, bool link_up)
{
        if (vf->driver_caps & VIRTCHNL_VF_CAP_ADV_LINK_SPEED) {
                pfe->event_data.link_event_adv.link_status = link_up;
                /* Speed in Mbps */
                pfe->event_data.link_event_adv.link_speed =
                        ice_conv_link_speed_to_virtchnl(true, ice_link_speed);
        } else {
                pfe->event_data.link_event.link_status = link_up;
                /* Legacy method for virtchnl link speeds */
                pfe->event_data.link_event.link_speed =
                        (enum virtchnl_link_speed)
                        ice_conv_link_speed_to_virtchnl(false, ice_link_speed);
        }
}

/**
 * ice_set_pfe_link_forced - Force the virtchnl_pf_event link speed/status
 * @vf: pointer to the VF structure
 * @pfe: pointer to the virtchnl_pf_event to set link speed/status for
 * @link_up: whether or not to set the link up/down
 */
static void
ice_set_pfe_link_forced(struct ice_vf *vf, struct virtchnl_pf_event *pfe,
                        bool link_up)
{
        u16 link_speed;

        if (link_up)
                link_speed = ICE_AQ_LINK_SPEED_100GB;
        else
                link_speed = ICE_AQ_LINK_SPEED_UNKNOWN;

        ice_set_pfe_link(vf, pfe, link_speed, link_up);
}

/**
 * ice_vc_notify_vf_link_state - Inform a VF of link status
 * @vf: pointer to the VF structure
 *
 * send a link status message to a single VF
 */
static void ice_vc_notify_vf_link_state(struct ice_vf *vf)
{
        struct virtchnl_pf_event pfe = { 0 };
        struct ice_link_status *ls;
        struct ice_pf *pf = vf->pf;
        struct ice_hw *hw;

        hw = &pf->hw;
        ls = &hw->port_info->phy.link_info;

        pfe.event = VIRTCHNL_EVENT_LINK_CHANGE;
        pfe.severity = PF_EVENT_SEVERITY_INFO;

        if (vf->link_forced)
                ice_set_pfe_link_forced(vf, &pfe, vf->link_up);
        else
                ice_set_pfe_link(vf, &pfe, ls->link_speed, ls->link_info &
                                 ICE_AQ_LINK_UP);

        ice_aq_send_msg_to_vf(hw, vf->vf_id, VIRTCHNL_OP_EVENT,
                              VIRTCHNL_STATUS_SUCCESS, (u8 *)&pfe,
                              sizeof(pfe), NULL);
}

/**
 * ice_free_vf_res - Free a VF's resources
 * @vf: pointer to the VF info
 */
static void ice_free_vf_res(struct ice_vf *vf)
{
        struct ice_pf *pf = vf->pf;
        int i, last_vector_idx;

        /* First, disable VF's configuration API to prevent OS from
         * accessing the VF's VSI after it's freed or invalidated.
         */
        clear_bit(ICE_VF_STATE_INIT, vf->vf_states);

        /* free VSI and disconnect it from the parent uplink */
        if (vf->lan_vsi_idx) {
                ice_vsi_release(pf->vsi[vf->lan_vsi_idx]);
                vf->lan_vsi_idx = 0;
                vf->lan_vsi_num = 0;
                vf->num_mac = 0;
        }

        last_vector_idx = vf->first_vector_idx + pf->num_vf_msix - 1;
        /* Disable interrupts so that VF starts in a known state */
        for (i = vf->first_vector_idx; i <= last_vector_idx; i++) {
                wr32(&pf->hw, GLINT_DYN_CTL(i), GLINT_DYN_CTL_CLEARPBA_M);
                ice_flush(&pf->hw);
        }
        /* reset some of the state variables keeping track of the resources */
        clear_bit(ICE_VF_STATE_MC_PROMISC, vf->vf_states);
        clear_bit(ICE_VF_STATE_UC_PROMISC, vf->vf_states);
}

/**
 * ice_dis_vf_mappings
 * @vf: pointer to the VF structure
 */
static void ice_dis_vf_mappings(struct ice_vf *vf)
{
        struct ice_pf *pf = vf->pf;
        struct ice_vsi *vsi;
        int first, last, v;
        struct ice_hw *hw;

        hw = &pf->hw;
        vsi = pf->vsi[vf->lan_vsi_idx];

        wr32(hw, VPINT_ALLOC(vf->vf_id), 0);
        wr32(hw, VPINT_ALLOC_PCI(vf->vf_id), 0);

        first = vf->first_vector_idx;
        last = first + pf->num_vf_msix - 1;
        for (v = first; v <= last; v++) {
                u32 reg;

                reg = (((1 << GLINT_VECT2FUNC_IS_PF_S) &
                        GLINT_VECT2FUNC_IS_PF_M) |
                       ((hw->pf_id << GLINT_VECT2FUNC_PF_NUM_S) &
                        GLINT_VECT2FUNC_PF_NUM_M));
                wr32(hw, GLINT_VECT2FUNC(v), reg);
        }

        if (vsi->tx_mapping_mode == ICE_VSI_MAP_CONTIG)
                wr32(hw, VPLAN_TX_QBASE(vf->vf_id), 0);
        else
                dev_err(&pf->pdev->dev,
                        "Scattered mode for VF Tx queues is not yet implemented\n");

        if (vsi->rx_mapping_mode == ICE_VSI_MAP_CONTIG)
                wr32(hw, VPLAN_RX_QBASE(vf->vf_id), 0);
        else
                dev_err(&pf->pdev->dev,
                        "Scattered mode for VF Rx queues is not yet implemented\n");
}

/**
 * ice_sriov_free_msix_res - Reset/free any used MSIX resources
 * @pf: pointer to the PF structure
 *
 * If MSIX entries from the pf->irq_tracker were needed then we need to
 * reset the irq_tracker->end and give back the entries we needed to
 * num_avail_sw_msix.
 *
 * If no MSIX entries were taken from the pf->irq_tracker then just clear
 * the pf->sriov_base_vector.
 *
 * Returns 0 on success, and -EINVAL on error.
 */
static int ice_sriov_free_msix_res(struct ice_pf *pf)
{
        struct ice_res_tracker *res;

        if (!pf)
                return -EINVAL;

        res = pf->irq_tracker;
        if (!res)
                return -EINVAL;

        /* give back irq_tracker resources used */
        if (pf->sriov_base_vector < res->num_entries) {
                res->end = res->num_entries;
                pf->num_avail_sw_msix +=
                        res->num_entries - pf->sriov_base_vector;
        }

        pf->sriov_base_vector = 0;

        return 0;
}

/**
 * ice_free_vfs - Free all VFs
 * @pf: pointer to the PF structure
 */
void ice_free_vfs(struct ice_pf *pf)
{
        struct ice_hw *hw = &pf->hw;
        int tmp, i;

        if (!pf->vf)
                return;

        while (test_and_set_bit(__ICE_VF_DIS, pf->state))
                usleep_range(1000, 2000);

        /* Avoid wait time by stopping all VFs at the same time */
        for (i = 0; i < pf->num_alloc_vfs; i++) {
                struct ice_vsi *vsi;

                if (!test_bit(ICE_VF_STATE_ENA, pf->vf[i].vf_states))
                        continue;

                vsi = pf->vsi[pf->vf[i].lan_vsi_idx];
                /* stop rings without wait time */
                ice_vsi_stop_lan_tx_rings(vsi, ICE_NO_RESET, i);
                ice_vsi_stop_rx_rings(vsi);

                clear_bit(ICE_VF_STATE_ENA, pf->vf[i].vf_states);
        }

        /* Disable IOV before freeing resources. This lets any VF drivers
         * running in the host get themselves cleaned up before we yank
         * the carpet out from underneath their feet.
         */
        if (!pci_vfs_assigned(pf->pdev))
                pci_disable_sriov(pf->pdev);
        else
                dev_warn(&pf->pdev->dev, "VFs are assigned - not disabling SR-IOV\n");

        tmp = pf->num_alloc_vfs;
        pf->num_vf_qps = 0;
        pf->num_alloc_vfs = 0;
        for (i = 0; i < tmp; i++) {
                if (test_bit(ICE_VF_STATE_INIT, pf->vf[i].vf_states)) {
                        /* disable VF qp mappings */
                        ice_dis_vf_mappings(&pf->vf[i]);

                        /* Set this state so that assigned VF vectors can be
                         * reclaimed by PF for reuse in ice_vsi_release(). No
                         * need to clear this bit since pf->vf array is being
                         * freed anyways after this for loop
                         */
                        set_bit(ICE_VF_STATE_CFG_INTR, pf->vf[i].vf_states);
                        ice_free_vf_res(&pf->vf[i]);
                }
        }

        if (ice_sriov_free_msix_res(pf))
                dev_err(&pf->pdev->dev,
                        "Failed to free MSIX resources used by SR-IOV\n");

        devm_kfree(&pf->pdev->dev, pf->vf);
        pf->vf = NULL;

        /* This check is for when the driver is unloaded while VFs are
         * assigned. Setting the number of VFs to 0 through sysfs is caught
         * before this function ever gets called.
         */
        if (!pci_vfs_assigned(pf->pdev)) {
                int vf_id;

                /* Acknowledge VFLR for all VFs. Without this, VFs will fail to
                 * work correctly when SR-IOV gets re-enabled.
                 */
                for (vf_id = 0; vf_id < tmp; vf_id++) {
                        u32 reg_idx, bit_idx;

                        reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
                        bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
                        wr32(hw, GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
                }
        }
        clear_bit(__ICE_VF_DIS, pf->state);
        clear_bit(ICE_FLAG_SRIOV_ENA, pf->flags);
}

/**
 * ice_trigger_vf_reset - Reset a VF on HW
 * @vf: pointer to the VF structure
 * @is_vflr: true if VFLR was issued, false if not
 *
 * Trigger hardware to start a reset for a particular VF. Expects the caller
 * to wait the proper amount of time to allow hardware to reset the VF before
 * it cleans up and restores VF functionality.
 */
static void ice_trigger_vf_reset(struct ice_vf *vf, bool is_vflr)
{
        struct ice_pf *pf = vf->pf;
        u32 reg, reg_idx, bit_idx;
        struct ice_hw *hw;
        int vf_abs_id, i;

        hw = &pf->hw;
        vf_abs_id = vf->vf_id + hw->func_caps.vf_base_id;

        /* Inform VF that it is no longer active, as a warning */
        clear_bit(ICE_VF_STATE_ACTIVE, vf->vf_states);

        /* Disable VF's configuration API during reset. The flag is re-enabled
         * in ice_alloc_vf_res(), when it's safe again to access VF's VSI.
         * It's normally disabled in ice_free_vf_res(), but it's safer
         * to do it earlier to give some time to finish to any VF config
         * functions that may still be running at this point.
         */
        clear_bit(ICE_VF_STATE_INIT, vf->vf_states);

        /* Clear the VF's ARQLEN register. This is how the VF detects reset,
         * since the VFGEN_RSTAT register doesn't stick at 0 after reset.
         */
        wr32(hw, VF_MBX_ARQLEN(vf_abs_id), 0);

        /* In the case of a VFLR, the HW has already reset the VF and we
         * just need to clean up, so don't hit the VFRTRIG register.
         */
        if (!is_vflr) {
                /* reset VF using VPGEN_VFRTRIG reg */
                reg = rd32(hw, VPGEN_VFRTRIG(vf->vf_id));
                reg |= VPGEN_VFRTRIG_VFSWR_M;
                wr32(hw, VPGEN_VFRTRIG(vf->vf_id), reg);
        }
        /* clear the VFLR bit in GLGEN_VFLRSTAT */
        reg_idx = (vf_abs_id) / 32;
        bit_idx = (vf_abs_id) % 32;
        wr32(hw, GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
        ice_flush(hw);

        wr32(hw, PF_PCI_CIAA,
             VF_DEVICE_STATUS | (vf_abs_id << PF_PCI_CIAA_VF_NUM_S));
        for (i = 0; i < 100; i++) {
                reg = rd32(hw, PF_PCI_CIAD);
                if ((reg & VF_TRANS_PENDING_M) != 0)
                        dev_err(&pf->pdev->dev,
                                "VF %d PCI transactions stuck\n", vf->vf_id);
                udelay(1);
        }
}

/**
 * ice_vsi_set_pvid_fill_ctxt - Set VSI ctxt for add PVID
 * @ctxt: the VSI ctxt to fill
 * @vid: the VLAN ID to set as a PVID
 */
static void ice_vsi_set_pvid_fill_ctxt(struct ice_vsi_ctx *ctxt, u16 vid)
{
        ctxt->info.vlan_flags = (ICE_AQ_VSI_VLAN_MODE_UNTAGGED |
                                 ICE_AQ_VSI_PVLAN_INSERT_PVID |
                                 ICE_AQ_VSI_VLAN_EMOD_STR);
        ctxt->info.pvid = cpu_to_le16(vid);
        ctxt->info.sw_flags2 |= ICE_AQ_VSI_SW_FLAG_RX_VLAN_PRUNE_ENA;
        ctxt->info.valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_VLAN_VALID |
                                                ICE_AQ_VSI_PROP_SW_VALID);
}

/**
 * ice_vsi_kill_pvid_fill_ctxt - Set VSI ctx for remove PVID
 * @ctxt: the VSI ctxt to fill
 */
static void ice_vsi_kill_pvid_fill_ctxt(struct ice_vsi_ctx *ctxt)
{
        ctxt->info.vlan_flags = ICE_AQ_VSI_VLAN_EMOD_NOTHING;
        ctxt->info.vlan_flags |= ICE_AQ_VSI_VLAN_MODE_ALL;
        ctxt->info.sw_flags2 &= ~ICE_AQ_VSI_SW_FLAG_RX_VLAN_PRUNE_ENA;
        ctxt->info.valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_VLAN_VALID |
                                                ICE_AQ_VSI_PROP_SW_VALID);
}

/**
 * ice_vsi_manage_pvid - Enable or disable port VLAN for VSI
 * @vsi: the VSI to update
 * @vid: the VLAN ID to set as a PVID
 * @enable: true for enable PVID false for disable
 */
static int ice_vsi_manage_pvid(struct ice_vsi *vsi, u16 vid, bool enable)
{
        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;

        ctxt->info = vsi->info;
        if (enable)
                ice_vsi_set_pvid_fill_ctxt(ctxt, vid);
        else
                ice_vsi_kill_pvid_fill_ctxt(ctxt);

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

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

/**
 * ice_vf_vsi_setup - Set up a VF VSI
 * @pf: board private structure
 * @pi: pointer to the port_info instance
 * @vf_id: defines VF ID to which this VSI connects.
 *
 * Returns pointer to the successfully allocated VSI struct on success,
 * otherwise returns NULL on failure.
 */
static struct ice_vsi *
ice_vf_vsi_setup(struct ice_pf *pf, struct ice_port_info *pi, u16 vf_id)
{
        return ice_vsi_setup(pf, pi, ICE_VSI_VF, vf_id);
}

/**
 * ice_calc_vf_first_vector_idx - Calculate absolute MSIX vector index in HW
 * @pf: pointer to PF structure
 * @vf: pointer to VF that the first MSIX vector index is being calculated for
 *
 * This returns the first MSIX vector index in HW that is used by this VF and
 * this will always be the OICR index in the AVF driver so any functionality
 * using vf->first_vector_idx for queue configuration will have to increment by
 * 1 to avoid meddling with the OICR index.
 */
static int ice_calc_vf_first_vector_idx(struct ice_pf *pf, struct ice_vf *vf)
{
        return pf->hw.func_caps.common_cap.msix_vector_first_id +
                pf->sriov_base_vector + vf->vf_id * pf->num_vf_msix;
}

/**
 * ice_alloc_vsi_res - Setup VF VSI and its resources
 * @vf: pointer to the VF structure
 *
 * Returns 0 on success, negative value on failure
 */
static int ice_alloc_vsi_res(struct ice_vf *vf)
{
        struct ice_pf *pf = vf->pf;
        LIST_HEAD(tmp_add_list);
        u8 broadcast[ETH_ALEN];
        struct ice_vsi *vsi;
        int status = 0;

        /* first vector index is the VFs OICR index */
        vf->first_vector_idx = ice_calc_vf_first_vector_idx(pf, vf);

        vsi = ice_vf_vsi_setup(pf, pf->hw.port_info, vf->vf_id);
        if (!vsi) {
                dev_err(&pf->pdev->dev, "Failed to create VF VSI\n");
                return -ENOMEM;
        }

        vf->lan_vsi_idx = vsi->idx;
        vf->lan_vsi_num = vsi->vsi_num;

        /* Check if port VLAN exist before, and restore it accordingly */
        if (vf->port_vlan_id) {
                ice_vsi_manage_pvid(vsi, vf->port_vlan_id, true);
                ice_vsi_add_vlan(vsi, vf->port_vlan_id & ICE_VLAN_M);
        }

        eth_broadcast_addr(broadcast);

        status = ice_add_mac_to_list(vsi, &tmp_add_list, broadcast);
        if (status)
                goto ice_alloc_vsi_res_exit;

        if (is_valid_ether_addr(vf->dflt_lan_addr.addr)) {
                status = ice_add_mac_to_list(vsi, &tmp_add_list,
                                             vf->dflt_lan_addr.addr);
                if (status)
                        goto ice_alloc_vsi_res_exit;
        }

        status = ice_add_mac(&pf->hw, &tmp_add_list);
        if (status)
                dev_err(&pf->pdev->dev, "could not add mac filters\n");

        /* Clear this bit after VF initialization since we shouldn't reclaim
         * and reassign interrupts for synchronous or asynchronous VFR events.
         * We don't want to reconfigure interrupts since AVF driver doesn't
         * expect vector assignment to be changed unless there is a request for
         * more vectors.
         */
        clear_bit(ICE_VF_STATE_CFG_INTR, vf->vf_states);
ice_alloc_vsi_res_exit:
        ice_free_fltr_list(&pf->pdev->dev, &tmp_add_list);
        return status;
}

/**
 * ice_alloc_vf_res - Allocate VF resources
 * @vf: pointer to the VF structure
 */
static int ice_alloc_vf_res(struct ice_vf *vf)
{
        struct ice_pf *pf = vf->pf;
        int tx_rx_queue_left;
        int status;

        /* setup VF VSI and necessary resources */
        status = ice_alloc_vsi_res(vf);
        if (status)
                goto ice_alloc_vf_res_exit;

        /* Update number of VF queues, in case VF had requested for queue
         * changes
         */
        tx_rx_queue_left = min_t(int, pf->q_left_tx, pf->q_left_rx);
        tx_rx_queue_left += ICE_DFLT_QS_PER_VF;
        if (vf->num_req_qs && vf->num_req_qs <= tx_rx_queue_left &&
            vf->num_req_qs != vf->num_vf_qs)
                vf->num_vf_qs = vf->num_req_qs;

        if (vf->trusted)
                set_bit(ICE_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
        else
                clear_bit(ICE_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);

        /* VF is now completely initialized */
        set_bit(ICE_VF_STATE_INIT, vf->vf_states);

        return status;

ice_alloc_vf_res_exit:
        ice_free_vf_res(vf);
        return status;
}

/**
 * ice_ena_vf_mappings
 * @vf: pointer to the VF structure
 *
 * Enable VF vectors and queues allocation by writing the details into
 * respective registers.
 */
static void ice_ena_vf_mappings(struct ice_vf *vf)
{
        struct ice_pf *pf = vf->pf;
        struct ice_vsi *vsi;
        int first, last, v;
        struct ice_hw *hw;
        int abs_vf_id;
        u32 reg;

        hw = &pf->hw;
        vsi = pf->vsi[vf->lan_vsi_idx];
        first = vf->first_vector_idx;
        last = (first + pf->num_vf_msix) - 1;
        abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;

        /* VF Vector allocation */
        reg = (((first << VPINT_ALLOC_FIRST_S) & VPINT_ALLOC_FIRST_M) |
               ((last << VPINT_ALLOC_LAST_S) & VPINT_ALLOC_LAST_M) |
               VPINT_ALLOC_VALID_M);
        wr32(hw, VPINT_ALLOC(vf->vf_id), reg);

        reg = (((first << VPINT_ALLOC_PCI_FIRST_S) & VPINT_ALLOC_PCI_FIRST_M) |
               ((last << VPINT_ALLOC_PCI_LAST_S) & VPINT_ALLOC_PCI_LAST_M) |
               VPINT_ALLOC_PCI_VALID_M);
        wr32(hw, VPINT_ALLOC_PCI(vf->vf_id), reg);
        /* map the interrupts to its functions */
        for (v = first; v <= last; v++) {
                reg = (((abs_vf_id << GLINT_VECT2FUNC_VF_NUM_S) &
                        GLINT_VECT2FUNC_VF_NUM_M) |
                       ((hw->pf_id << GLINT_VECT2FUNC_PF_NUM_S) &
                        GLINT_VECT2FUNC_PF_NUM_M));
                wr32(hw, GLINT_VECT2FUNC(v), reg);
        }

        /* Map mailbox interrupt. We put an explicit 0 here to remind us that
         * VF admin queue interrupts will go to VF MSI-X vector 0.
         */
        wr32(hw, VPINT_MBX_CTL(abs_vf_id), VPINT_MBX_CTL_CAUSE_ENA_M | 0);
        /* set regardless of mapping mode */
        wr32(hw, VPLAN_TXQ_MAPENA(vf->vf_id), VPLAN_TXQ_MAPENA_TX_ENA_M);

        /* VF Tx queues allocation */
        if (vsi->tx_mapping_mode == ICE_VSI_MAP_CONTIG) {
                /* set the VF PF Tx queue range
                 * VFNUMQ value should be set to (number of queues - 1). A value
                 * of 0 means 1 queue and a value of 255 means 256 queues
                 */
                reg = (((vsi->txq_map[0] << VPLAN_TX_QBASE_VFFIRSTQ_S) &
                        VPLAN_TX_QBASE_VFFIRSTQ_M) |
                       (((vsi->alloc_txq - 1) << VPLAN_TX_QBASE_VFNUMQ_S) &
                        VPLAN_TX_QBASE_VFNUMQ_M));
                wr32(hw, VPLAN_TX_QBASE(vf->vf_id), reg);
        } else {
                dev_err(&pf->pdev->dev,
                        "Scattered mode for VF Tx queues is not yet implemented\n");
        }

        /* set regardless of mapping mode */
        wr32(hw, VPLAN_RXQ_MAPENA(vf->vf_id), VPLAN_RXQ_MAPENA_RX_ENA_M);

        /* VF Rx queues allocation */
        if (vsi->rx_mapping_mode == ICE_VSI_MAP_CONTIG) {
                /* set the VF PF Rx queue range
                 * VFNUMQ value should be set to (number of queues - 1). A value
                 * of 0 means 1 queue and a value of 255 means 256 queues
                 */
                reg = (((vsi->rxq_map[0] << VPLAN_RX_QBASE_VFFIRSTQ_S) &
                        VPLAN_RX_QBASE_VFFIRSTQ_M) |
                       (((vsi->alloc_txq - 1) << VPLAN_RX_QBASE_VFNUMQ_S) &
                        VPLAN_RX_QBASE_VFNUMQ_M));
                wr32(hw, VPLAN_RX_QBASE(vf->vf_id), reg);
        } else {
                dev_err(&pf->pdev->dev,
                        "Scattered mode for VF Rx queues is not yet implemented\n");
        }
}

/**
 * ice_determine_res
 * @pf: pointer to the PF structure
 * @avail_res: available resources in the PF structure
 * @max_res: maximum resources that can be given per VF
 * @min_res: minimum resources that can be given per VF
 *
 * Returns non-zero value if resources (queues/vectors) are available or
 * returns zero if PF cannot accommodate for all num_alloc_vfs.
 */
static int
ice_determine_res(struct ice_pf *pf, u16 avail_res, u16 max_res, u16 min_res)
{
        bool checked_min_res = false;
        int res;

        /* start by checking if PF can assign max number of resources for
         * all num_alloc_vfs.
         * if yes, return number per VF
         * If no, divide by 2 and roundup, check again
         * repeat the loop till we reach a point where even minimum resources
         * are not available, in that case return 0
         */
        res = max_res;
        while ((res >= min_res) && !checked_min_res) {
                int num_all_res;

                num_all_res = pf->num_alloc_vfs * res;
                if (num_all_res <= avail_res)
                        return res;

                if (res == min_res)
                        checked_min_res = true;

                res = DIV_ROUND_UP(res, 2);
        }
        return 0;
}

/**
 * ice_calc_vf_reg_idx - Calculate the VF's register index in the PF space
 * @vf: VF to calculate the register index for
 * @q_vector: a q_vector associated to the VF
 */
int ice_calc_vf_reg_idx(struct ice_vf *vf, struct ice_q_vector *q_vector)
{
        struct ice_pf *pf;

        if (!vf || !q_vector)
                return -EINVAL;

        pf = vf->pf;

        /* always add one to account for the OICR being the first MSIX */
        return pf->sriov_base_vector + pf->num_vf_msix * vf->vf_id +
                q_vector->v_idx + 1;
}

/**
 * ice_get_max_valid_res_idx - Get the max valid resource index
 * @res: pointer to the resource to find the max valid index for
 *
 * Start from the end of the ice_res_tracker and return right when we find the
 * first res->list entry with the ICE_RES_VALID_BIT set. This function is only
 * valid for SR-IOV because it is the only consumer that manipulates the
 * res->end and this is always called when res->end is set to res->num_entries.
 */
static int ice_get_max_valid_res_idx(struct ice_res_tracker *res)
{
        int i;

        if (!res)
                return -EINVAL;

        for (i = res->num_entries - 1; i >= 0; i--)
                if (res->list[i] & ICE_RES_VALID_BIT)
                        return i;

        return 0;
}

/**
 * ice_sriov_set_msix_res - Set any used MSIX resources
 * @pf: pointer to PF structure
 * @num_msix_needed: number of MSIX vectors needed for all SR-IOV VFs
 *
 * This function allows SR-IOV resources to be taken from the end of the PF's
 * allowed HW MSIX vectors so in many cases the irq_tracker will not
 * be needed. In these cases we just set the pf->sriov_base_vector and return
 * success.
 *
 * If SR-IOV needs to use any pf->irq_tracker entries it updates the
 * irq_tracker->end based on the first entry needed for SR-IOV. This makes it
 * so any calls to ice_get_res() using the irq_tracker will not try to use
 * resources at or beyond the newly set value.
 *
 * Return 0 on success, and -EINVAL when there are not enough MSIX vectors in
 * in the PF's space available for SR-IOV.
 */
static int ice_sriov_set_msix_res(struct ice_pf *pf, u16 num_msix_needed)
{
        int max_valid_res_idx = ice_get_max_valid_res_idx(pf->irq_tracker);
        u16 pf_total_msix_vectors =
                pf->hw.func_caps.common_cap.num_msix_vectors;
        struct ice_res_tracker *res = pf->irq_tracker;
        int sriov_base_vector;

        if (max_valid_res_idx < 0)
                return max_valid_res_idx;

        sriov_base_vector = pf_total_msix_vectors - num_msix_needed;

        /* make sure we only grab irq_tracker entries from the list end and
         * that we have enough available MSIX vectors
         */
        if (sriov_base_vector <= max_valid_res_idx)
                return -EINVAL;

        pf->sriov_base_vector = sriov_base_vector;

        /* dip into irq_tracker entries and update used resources */
        if (num_msix_needed > (pf_total_msix_vectors - res->num_entries)) {
                pf->num_avail_sw_msix -=
                        res->num_entries - pf->sriov_base_vector;
                res->end = pf->sriov_base_vector;
        }

        return 0;
}

/**
 * ice_check_avail_res - check if vectors and queues are available
 * @pf: pointer to the PF structure
 *
 * This function is where we calculate actual number of resources for VF VSIs,
 * we don't reserve ahead of time during probe. Returns success if vectors and
 * queues resources are available, otherwise returns error code
 */
static int ice_check_avail_res(struct ice_pf *pf)
{
        int max_valid_res_idx = ice_get_max_valid_res_idx(pf->irq_tracker);
        u16 num_msix, num_txq, num_rxq, num_avail_msix;

        if (!pf->num_alloc_vfs || max_valid_res_idx < 0)
                return -EINVAL;

        /* add 1 to max_valid_res_idx to account for it being 0-based */
        num_avail_msix = pf->hw.func_caps.common_cap.num_msix_vectors -
                (max_valid_res_idx + 1);

        /* Grab from HW interrupts common pool
         * Note: By the time the user decides it needs more vectors in a VF
         * its already too late since one must decide this prior to creating the
         * VF interface. So the best we can do is take a guess as to what the
         * user might want.
         *
         * We have two policies for vector allocation:
         * 1. if num_alloc_vfs is from 1 to 16, then we consider this as small
         * number of NFV VFs used for NFV appliances, since this is a special
         * case, we try to assign maximum vectors per VF (65) as much as
         * possible, based on determine_resources algorithm.
         * 2. if num_alloc_vfs is from 17 to 256, then its large number of
         * regular VFs which are not used for any special purpose. Hence try to
         * grab default interrupt vectors (5 as supported by AVF driver).
         */
        if (pf->num_alloc_vfs <= 16) {
                num_msix = ice_determine_res(pf, num_avail_msix,
                                             ICE_MAX_INTR_PER_VF,
                                             ICE_MIN_INTR_PER_VF);
        } else if (pf->num_alloc_vfs <= ICE_MAX_VF_COUNT) {
                num_msix = ice_determine_res(pf, num_avail_msix,
                                             ICE_DFLT_INTR_PER_VF,
                                             ICE_MIN_INTR_PER_VF);
        } else {
                dev_err(&pf->pdev->dev,
                        "Number of VFs %d exceeds max VF count %d\n",
                        pf->num_alloc_vfs, ICE_MAX_VF_COUNT);
                return -EIO;
        }

        if (!num_msix)
                return -EIO;

        /* Grab from the common pool
         * start by requesting Default queues (4 as supported by AVF driver),
         * Note that, the main difference between queues and vectors is, latter
         * can only be reserved at init time but queues can be requested by VF
         * at runtime through Virtchnl, that is the reason we start by reserving
         * few queues.
         */
        num_txq = ice_determine_res(pf, pf->q_left_tx, ICE_DFLT_QS_PER_VF,
                                    ICE_MIN_QS_PER_VF);

        num_rxq = ice_determine_res(pf, pf->q_left_rx, ICE_DFLT_QS_PER_VF,
                                    ICE_MIN_QS_PER_VF);

        if (!num_txq || !num_rxq)
                return -EIO;

        if (ice_sriov_set_msix_res(pf, num_msix * pf->num_alloc_vfs))
                return -EINVAL;

        /* since AVF driver works with only queue pairs which means, it expects
         * to have equal number of Rx and Tx queues, so take the minimum of
         * available Tx or Rx queues
         */
        pf->num_vf_qps = min_t(int, num_txq, num_rxq);
        pf->num_vf_msix = num_msix;

        return 0;
}

/**
 * ice_cleanup_and_realloc_vf - Clean up VF and reallocate resources after reset
 * @vf: pointer to the VF structure
 *
 * Cleanup a VF after the hardware reset is finished. Expects the caller to
 * have verified whether the reset is finished properly, and ensure the
 * minimum amount of wait time has passed. Reallocate VF resources back to make
 * VF state active
 */
static void ice_cleanup_and_realloc_vf(struct ice_vf *vf)
{
        struct ice_pf *pf = vf->pf;
        struct ice_hw *hw;
        u32 reg;

        hw = &pf->hw;

        /* PF software completes the flow by notifying VF that reset flow is
         * completed. This is done by enabling hardware by clearing the reset
         * bit in the VPGEN_VFRTRIG reg and setting VFR_STATE in the VFGEN_RSTAT
         * register to VFR completed (done at the end of this function)
         * By doing this we allow HW to access VF memory at any point. If we
         * did it any sooner, HW could access memory while it was being freed
         * in ice_free_vf_res(), causing an IOMMU fault.
         *
         * On the other hand, this needs to be done ASAP, because the VF driver
         * is waiting for this to happen and may report a timeout. It's
         * harmless, but it gets logged into Guest OS kernel log, so best avoid
         * it.
         */
        reg = rd32(hw, VPGEN_VFRTRIG(vf->vf_id));
        reg &= ~VPGEN_VFRTRIG_VFSWR_M;
        wr32(hw, VPGEN_VFRTRIG(vf->vf_id), reg);

        /* reallocate VF resources to finish resetting the VSI state */
        if (!ice_alloc_vf_res(vf)) {
                ice_ena_vf_mappings(vf);
                set_bit(ICE_VF_STATE_ACTIVE, vf->vf_states);
                clear_bit(ICE_VF_STATE_DIS, vf->vf_states);
                vf->num_vlan = 0;
        }

        /* Tell the VF driver the reset is done. This needs to be done only
         * after VF has been fully initialized, because the VF driver may
         * request resources immediately after setting this flag.
         */
        wr32(hw, VFGEN_RSTAT(vf->vf_id), VIRTCHNL_VFR_VFACTIVE);
}

/**
 * ice_vf_set_vsi_promisc - set given VF VSI to given promiscuous mode(s)
 * @vf: pointer to the VF info
 * @vsi: the VSI being configured
 * @promisc_m: mask of promiscuous config bits
 * @rm_promisc: promisc flag request from the VF to remove or add filter
 *
 * This function configures VF VSI promiscuous mode, based on the VF requests,
 * for Unicast, Multicast and VLAN
 */
static enum ice_status
ice_vf_set_vsi_promisc(struct ice_vf *vf, struct ice_vsi *vsi, u8 promisc_m,
                       bool rm_promisc)
{
        struct ice_pf *pf = vf->pf;
        enum ice_status status = 0;
        struct ice_hw *hw;

        hw = &pf->hw;
        if (vf->num_vlan) {
                status = ice_set_vlan_vsi_promisc(hw, vsi->idx, promisc_m,
                                                  rm_promisc);
        } else if (vf->port_vlan_id) {
                if (rm_promisc)
                        status = ice_clear_vsi_promisc(hw, vsi->idx, promisc_m,
                                                       vf->port_vlan_id);
                else
                        status = ice_set_vsi_promisc(hw, vsi->idx, promisc_m,
                                                     vf->port_vlan_id);
        } else {
                if (rm_promisc)
                        status = ice_clear_vsi_promisc(hw, vsi->idx, promisc_m,
                                                       0);
                else
                        status = ice_set_vsi_promisc(hw, vsi->idx, promisc_m,
                                                     0);
        }

        return status;
}

/**
 * ice_reset_all_vfs - reset all allocated VFs in one go
 * @pf: pointer to the PF structure
 * @is_vflr: true if VFLR was issued, false if not
 *
 * First, tell the hardware to reset each VF, then do all the waiting in one
 * chunk, and finally finish restoring each VF after the wait. This is useful
 * during PF routines which need to reset all VFs, as otherwise it must perform
 * these resets in a serialized fashion.
 *
 * Returns true if any VFs were reset, and false otherwise.
 */
bool ice_reset_all_vfs(struct ice_pf *pf, bool is_vflr)
{
        struct ice_hw *hw = &pf->hw;
        struct ice_vf *vf;

        int v, i;

        /* If we don't have any VFs, then there is nothing to reset */
        if (!pf->num_alloc_vfs)
                return false;

        /* If VFs have been disabled, there is no need to reset */
        if (test_and_set_bit(__ICE_VF_DIS, pf->state))
                return false;

        /* Begin reset on all VFs at once */
        for (v = 0; v < pf->num_alloc_vfs; v++)
                ice_trigger_vf_reset(&pf->vf[v], is_vflr);

        for (v = 0; v < pf->num_alloc_vfs; v++) {
                struct ice_vsi *vsi;

                vf = &pf->vf[v];
                vsi = pf->vsi[vf->lan_vsi_idx];
                if (test_bit(ICE_VF_STATE_ENA, vf->vf_states)) {
                        ice_vsi_stop_lan_tx_rings(vsi, ICE_VF_RESET, vf->vf_id);
                        ice_vsi_stop_rx_rings(vsi);
                        clear_bit(ICE_VF_STATE_ENA, vf->vf_states);
                }
        }

        /* HW requires some time to make sure it can flush the FIFO for a VF
         * when it resets it. Poll the VPGEN_VFRSTAT register for each VF in
         * sequence to make sure that it has completed. We'll keep track of
         * the VFs using a simple iterator that increments once that VF has
         * finished resetting.
         */
        for (i = 0, v = 0; i < 10 && v < pf->num_alloc_vfs; i++) {
                usleep_range(10000, 20000);

                /* Check each VF in sequence */
                while (v < pf->num_alloc_vfs) {
                        u32 reg;

                        vf = &pf->vf[v];
                        reg = rd32(hw, VPGEN_VFRSTAT(vf->vf_id));
                        if (!(reg & VPGEN_VFRSTAT_VFRD_M))
                                break;

                        /* If the current VF has finished resetting, move on
                         * to the next VF in sequence.
                         */
                        v++;
                }
        }

        /* Display a warning if at least one VF didn't manage to reset in
         * time, but continue on with the operation.
         */
        if (v < pf->num_alloc_vfs)
                dev_warn(&pf->pdev->dev, "VF reset check timeout\n");
        usleep_range(10000, 20000);

        /* free VF resources to begin resetting the VSI state */
        for (v = 0; v < pf->num_alloc_vfs; v++) {
                vf = &pf->vf[v];

                ice_free_vf_res(vf);

                /* Free VF queues as well, and reallocate later.
                 * If a given VF has different number of queues
                 * configured, the request for update will come
                 * via mailbox communication.
                 */
                vf->num_vf_qs = 0;
        }

        if (ice_sriov_free_msix_res(pf))
                dev_err(&pf->pdev->dev,
                        "Failed to free MSIX resources used by SR-IOV\n");

        if (ice_check_avail_res(pf)) {
                dev_err(&pf->pdev->dev,
                        "Cannot allocate VF resources, try with fewer number of VFs\n");
                return false;
        }

        /* Finish the reset on each VF */
        for (v = 0; v < pf->num_alloc_vfs; v++) {
                vf = &pf->vf[v];

                vf->num_vf_qs = pf->num_vf_qps;
                dev_dbg(&pf->pdev->dev,
                        "VF-id %d has %d queues configured\n",
                        vf->vf_id, vf->num_vf_qs);
                ice_cleanup_and_realloc_vf(vf);
        }

        ice_flush(hw);
        clear_bit(__ICE_VF_DIS, pf->state);

        return true;
}

/**
 * ice_reset_vf - Reset a particular VF
 * @vf: pointer to the VF structure
 * @is_vflr: true if VFLR was issued, false if not
 *
 * Returns true if the VF is reset, false otherwise.
 */
static bool ice_reset_vf(struct ice_vf *vf, bool is_vflr)
{
        struct ice_pf *pf = vf->pf;
        struct ice_vsi *vsi;
        struct ice_hw *hw;
        bool rsd = false;
        u8 promisc_m;
        u32 reg;
        int i;

        /* If the VFs have been disabled, this means something else is
         * resetting the VF, so we shouldn't continue.
         */
        if (test_and_set_bit(__ICE_VF_DIS, pf->state))
                return false;

        ice_trigger_vf_reset(vf, is_vflr);

        vsi = pf->vsi[vf->lan_vsi_idx];

        if (test_bit(ICE_VF_STATE_ENA, vf->vf_states)) {
                ice_vsi_stop_lan_tx_rings(vsi, ICE_VF_RESET, vf->vf_id);
                ice_vsi_stop_rx_rings(vsi);
                clear_bit(ICE_VF_STATE_ENA, vf->vf_states);
        } else {
                /* Call Disable LAN Tx queue AQ call even when queues are not
                 * enabled. This is needed for successful completiom of VFR
                 */
                ice_dis_vsi_txq(vsi->port_info, vsi->idx, 0, 0, NULL, NULL,
                                NULL, ICE_VF_RESET, vf->vf_id, NULL);
        }

        hw = &pf->hw;
        /* poll VPGEN_VFRSTAT reg to make sure
         * that reset is complete
         */
        for (i = 0; i < 10; i++) {
                /* VF reset requires driver to first reset the VF and then
                 * poll the status register to make sure that the reset
                 * completed successfully.
                 */
                usleep_range(10000, 20000);
                reg = rd32(hw, VPGEN_VFRSTAT(vf->vf_id));
                if (reg & VPGEN_VFRSTAT_VFRD_M) {
                        rsd = true;
                        break;
                }
        }

        /* Display a warning if VF didn't manage to reset in time, but need to
         * continue on with the operation.
         */
        if (!rsd)
                dev_warn(&pf->pdev->dev, "VF reset check timeout on VF %d\n",
                         vf->vf_id);

        usleep_range(10000, 20000);

        /* disable promiscuous modes in case they were enabled
         * ignore any error if disabling process failed
         */
        if (test_bit(ICE_VF_STATE_UC_PROMISC, vf->vf_states) ||
            test_bit(ICE_VF_STATE_MC_PROMISC, vf->vf_states)) {
                if (vf->port_vlan_id ||  vf->num_vlan)
                        promisc_m = ICE_UCAST_VLAN_PROMISC_BITS;
                else
                        promisc_m = ICE_UCAST_PROMISC_BITS;

                vsi = pf->vsi[vf->lan_vsi_idx];
                if (ice_vf_set_vsi_promisc(vf, vsi, promisc_m, true))
                        dev_err(&pf->pdev->dev, "disabling promiscuous mode failed\n");
        }

        /* free VF resources to begin resetting the VSI state */
        ice_free_vf_res(vf);

        ice_cleanup_and_realloc_vf(vf);

        ice_flush(hw);
        clear_bit(__ICE_VF_DIS, pf->state);

        return true;
}

/**
 * ice_vc_notify_link_state - Inform all VFs on a PF of link status
 * @pf: pointer to the PF structure
 */
void ice_vc_notify_link_state(struct ice_pf *pf)
{
        int i;

        for (i = 0; i < pf->num_alloc_vfs; i++)
                ice_vc_notify_vf_link_state(&pf->vf[i]);
}

/**
 * ice_vc_notify_reset - Send pending reset message to all VFs
 * @pf: pointer to the PF structure
 *
 * indicate a pending reset to all VFs on a given PF
 */
void ice_vc_notify_reset(struct ice_pf *pf)
{
        struct virtchnl_pf_event pfe;

        if (!pf->num_alloc_vfs)
                return;

        pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
        pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
        ice_vc_vf_broadcast(pf, VIRTCHNL_OP_EVENT, VIRTCHNL_STATUS_SUCCESS,
                            (u8 *)&pfe, sizeof(struct virtchnl_pf_event));
}

/**
 * ice_vc_notify_vf_reset - Notify VF of a reset event
 * @vf: pointer to the VF structure
 */
static void ice_vc_notify_vf_reset(struct ice_vf *vf)
{
        struct virtchnl_pf_event pfe;

        /* validate the request */
        if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
                return;

        /* verify if the VF is in either init or active before proceeding */
        if (!test_bit(ICE_VF_STATE_INIT, vf->vf_states) &&
            !test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states))
                return;

        pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
        pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
        ice_aq_send_msg_to_vf(&vf->pf->hw, vf->vf_id, VIRTCHNL_OP_EVENT,
                              VIRTCHNL_STATUS_SUCCESS, (u8 *)&pfe, sizeof(pfe),
                              NULL);
}

/**
 * ice_alloc_vfs - Allocate and set up VFs resources
 * @pf: pointer to the PF structure
 * @num_alloc_vfs: number of VFs to allocate
 */
static int ice_alloc_vfs(struct ice_pf *pf, u16 num_alloc_vfs)
{
        struct ice_hw *hw = &pf->hw;
        struct ice_vf *vfs;
        int i, ret;

        /* Disable global interrupt 0 so we don't try to handle the VFLR. */
        wr32(hw, GLINT_DYN_CTL(pf->oicr_idx),
             ICE_ITR_NONE << GLINT_DYN_CTL_ITR_INDX_S);

        ice_flush(hw);

        ret = pci_enable_sriov(pf->pdev, num_alloc_vfs);
        if (ret) {
                pf->num_alloc_vfs = 0;
                goto err_unroll_intr;
        }
        /* allocate memory */
        vfs = devm_kcalloc(&pf->pdev->dev, num_alloc_vfs, sizeof(*vfs),
                           GFP_KERNEL);
        if (!vfs) {
                ret = -ENOMEM;
                goto err_pci_disable_sriov;
        }
        pf->vf = vfs;

        /* apply default profile */
        for (i = 0; i < num_alloc_vfs; i++) {
                vfs[i].pf = pf;
                vfs[i].vf_sw_id = pf->first_sw;
                vfs[i].vf_id = i;

                /* assign default capabilities */
                set_bit(ICE_VIRTCHNL_VF_CAP_L2, &vfs[i].vf_caps);
                vfs[i].spoofchk = true;

                /* Set this state so that PF driver does VF vector assignment */
                set_bit(ICE_VF_STATE_CFG_INTR, vfs[i].vf_states);
        }
        pf->num_alloc_vfs = num_alloc_vfs;

        /* VF resources get allocated during reset */
        if (!ice_reset_all_vfs(pf, true)) {
                ret = -EIO;
                goto err_unroll_sriov;
        }

        goto err_unroll_intr;

err_unroll_sriov:
        pf->vf = NULL;
        devm_kfree(&pf->pdev->dev, vfs);
        vfs = NULL;
        pf->num_alloc_vfs = 0;
err_pci_disable_sriov:
        pci_disable_sriov(pf->pdev);
err_unroll_intr:
        /* rearm interrupts here */
        ice_irq_dynamic_ena(hw, NULL, NULL);
        return ret;
}

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

        if (!pf)
                return false;

        bitmap_set(check_bits, 0, __ICE_STATE_NOMINAL_CHECK_BITS);
        if (bitmap_intersects(pf->state, check_bits, __ICE_STATE_NBITS))
                return false;

        return true;
}

/**
 * ice_pci_sriov_ena - Enable or change number of VFs
 * @pf: pointer to the PF structure
 * @num_vfs: number of VFs to allocate
 */
static int ice_pci_sriov_ena(struct ice_pf *pf, int num_vfs)
{
        int pre_existing_vfs = pci_num_vf(pf->pdev);
        struct device *dev = &pf->pdev->dev;
        int err;

        if (!ice_pf_state_is_nominal(pf)) {
                dev_err(dev, "Cannot enable SR-IOV, device not ready\n");
                return -EBUSY;
        }

        if (!test_bit(ICE_FLAG_SRIOV_CAPABLE, pf->flags)) {
                dev_err(dev, "This device is not capable of SR-IOV\n");
                return -ENODEV;
        }

        if (pre_existing_vfs && pre_existing_vfs != num_vfs)
                ice_free_vfs(pf);
        else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
                return num_vfs;

        if (num_vfs > pf->num_vfs_supported) {
                dev_err(dev, "Can't enable %d VFs, max VFs supported is %d\n",
                        num_vfs, pf->num_vfs_supported);
                return -ENOTSUPP;
        }

        dev_info(dev, "Allocating %d VFs\n", num_vfs);
        err = ice_alloc_vfs(pf, num_vfs);
        if (err) {
                dev_err(dev, "Failed to enable SR-IOV: %d\n", err);
                return err;
        }

        set_bit(ICE_FLAG_SRIOV_ENA, pf->flags);
        return num_vfs;
}

/**
 * ice_sriov_configure - Enable or change number of VFs via sysfs
 * @pdev: pointer to a pci_dev structure
 * @num_vfs: number of VFs to allocate
 *
 * This function is called when the user updates the number of VFs in sysfs.
 */
int ice_sriov_configure(struct pci_dev *pdev, int num_vfs)
{
        struct ice_pf *pf = pci_get_drvdata(pdev);

        if (num_vfs)
                return ice_pci_sriov_ena(pf, num_vfs);

        if (!pci_vfs_assigned(pdev)) {
                ice_free_vfs(pf);
        } else {
                dev_err(&pf->pdev->dev,
                        "can't free VFs because some are assigned to VMs.\n");
                return -EBUSY;
        }

        return 0;
}

/**
 * ice_process_vflr_event - Free VF resources via IRQ calls
 * @pf: pointer to the PF structure
 *
 * called from the VFLR IRQ handler to
 * free up VF resources and state variables
 */
void ice_process_vflr_event(struct ice_pf *pf)
{
        struct ice_hw *hw = &pf->hw;
        int vf_id;
        u32 reg;

        if (!test_and_clear_bit(__ICE_VFLR_EVENT_PENDING, pf->state) ||
            !pf->num_alloc_vfs)
                return;

        for (vf_id = 0; vf_id < pf->num_alloc_vfs; vf_id++) {
                struct ice_vf *vf = &pf->vf[vf_id];
                u32 reg_idx, bit_idx;

                reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
                bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
                /* read GLGEN_VFLRSTAT register to find out the flr VFs */
                reg = rd32(hw, GLGEN_VFLRSTAT(reg_idx));
                if (reg & BIT(bit_idx))
                        /* GLGEN_VFLRSTAT bit will be cleared in ice_reset_vf */
                        ice_reset_vf(vf, true);
        }
}

/**
 * ice_vc_dis_vf - Disable a given VF via SW reset
 * @vf: pointer to the VF info
 *
 * Disable the VF through a SW reset
 */
static void ice_vc_dis_vf(struct ice_vf *vf)
{
        ice_vc_notify_vf_reset(vf);
        ice_reset_vf(vf, false);
}

/**
 * ice_vc_send_msg_to_vf - Send message to VF
 * @vf: pointer to the VF info
 * @v_opcode: virtual channel opcode
 * @v_retval: virtual channel return value
 * @msg: pointer to the msg buffer
 * @msglen: msg length
 *
 * send msg to VF
 */
static int
ice_vc_send_msg_to_vf(struct ice_vf *vf, u32 v_opcode,
                      enum virtchnl_status_code v_retval, u8 *msg, u16 msglen)
{
        enum ice_status aq_ret;
        struct ice_pf *pf;

        /* validate the request */
        if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
                return -EINVAL;

        pf = vf->pf;

        /* single place to detect unsuccessful return values */
        if (v_retval) {
                vf->num_inval_msgs++;
                dev_info(&pf->pdev->dev, "VF %d failed opcode %d, retval: %d\n",
                         vf->vf_id, v_opcode, v_retval);
                if (vf->num_inval_msgs > ICE_DFLT_NUM_INVAL_MSGS_ALLOWED) {
                        dev_err(&pf->pdev->dev,
                                "Number of invalid messages exceeded for VF %d\n",
                                vf->vf_id);
                        dev_err(&pf->pdev->dev, "Use PF Control I/F to enable the VF\n");
                        set_bit(ICE_VF_STATE_DIS, vf->vf_states);
                        return -EIO;
                }
        } else {
                vf->num_valid_msgs++;
                /* reset the invalid counter, if a valid message is received. */
                vf->num_inval_msgs = 0;
        }

        aq_ret = ice_aq_send_msg_to_vf(&pf->hw, vf->vf_id, v_opcode, v_retval,
                                       msg, msglen, NULL);
        if (aq_ret) {
                dev_info(&pf->pdev->dev,
                         "Unable to send the message to VF %d aq_err %d\n",
                         vf->vf_id, pf->hw.mailboxq.sq_last_status);
                return -EIO;
        }

        return 0;
}

/**
 * ice_vc_get_ver_msg
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 *
 * called from the VF to request the API version used by the PF
 */
static int ice_vc_get_ver_msg(struct ice_vf *vf, u8 *msg)
{
        struct virtchnl_version_info info = {
                VIRTCHNL_VERSION_MAJOR, VIRTCHNL_VERSION_MINOR
        };

        vf->vf_ver = *(struct virtchnl_version_info *)msg;
        /* VFs running the 1.0 API expect to get 1.0 back or they will cry. */
        if (VF_IS_V10(&vf->vf_ver))
                info.minor = VIRTCHNL_VERSION_MINOR_NO_VF_CAPS;

        return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_VERSION,
                                     VIRTCHNL_STATUS_SUCCESS, (u8 *)&info,
                                     sizeof(struct virtchnl_version_info));
}

/**
 * ice_vc_get_vf_res_msg
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 *
 * called from the VF to request its resources
 */
static int ice_vc_get_vf_res_msg(struct ice_vf *vf, u8 *msg)
{
        enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
        struct virtchnl_vf_resource *vfres = NULL;
        struct ice_pf *pf = vf->pf;
        struct ice_vsi *vsi;
        int len = 0;
        int ret;

        if (!test_bit(ICE_VF_STATE_INIT, vf->vf_states)) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto err;
        }

        len = sizeof(struct virtchnl_vf_resource);

        vfres = devm_kzalloc(&pf->pdev->dev, len, GFP_KERNEL);
        if (!vfres) {
                v_ret = VIRTCHNL_STATUS_ERR_NO_MEMORY;
                len = 0;
                goto err;
        }
        if (VF_IS_V11(&vf->vf_ver))
                vf->driver_caps = *(u32 *)msg;
        else
                vf->driver_caps = VIRTCHNL_VF_OFFLOAD_L2 |
                                  VIRTCHNL_VF_OFFLOAD_RSS_REG |
                                  VIRTCHNL_VF_OFFLOAD_VLAN;

        vfres->vf_cap_flags = VIRTCHNL_VF_OFFLOAD_L2;
        vsi = pf->vsi[vf->lan_vsi_idx];
        if (!vsi) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto err;
        }

        if (!vsi->info.pvid)
                vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_VLAN;

        if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PF) {
                vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_PF;
        } else {
                if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_AQ)
                        vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_AQ;
                else
                        vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_REG;
        }

        if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2)
                vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2;

        if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP)
                vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP;

        if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM)
                vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM;

        if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RX_POLLING)
                vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RX_POLLING;

        if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_WB_ON_ITR)
                vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_WB_ON_ITR;

        if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_REQ_QUEUES)
                vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_REQ_QUEUES;

        if (vf->driver_caps & VIRTCHNL_VF_CAP_ADV_LINK_SPEED)
                vfres->vf_cap_flags |= VIRTCHNL_VF_CAP_ADV_LINK_SPEED;

        vfres->num_vsis = 1;
        /* Tx and Rx queue are equal for VF */
        vfres->num_queue_pairs = vsi->num_txq;
        vfres->max_vectors = pf->num_vf_msix;
        vfres->rss_key_size = ICE_VSIQF_HKEY_ARRAY_SIZE;
        vfres->rss_lut_size = ICE_VSIQF_HLUT_ARRAY_SIZE;

        vfres->vsi_res[0].vsi_id = vf->lan_vsi_num;
        vfres->vsi_res[0].vsi_type = VIRTCHNL_VSI_SRIOV;
        vfres->vsi_res[0].num_queue_pairs = vsi->num_txq;
        ether_addr_copy(vfres->vsi_res[0].default_mac_addr,
                        vf->dflt_lan_addr.addr);

        set_bit(ICE_VF_STATE_ACTIVE, vf->vf_states);

err:
        /* send the response back to the VF */
        ret = ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_VF_RESOURCES, v_ret,
                                    (u8 *)vfres, len);

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

/**
 * ice_vc_reset_vf_msg
 * @vf: pointer to the VF info
 *
 * called from the VF to reset itself,
 * unlike other virtchnl messages, PF driver
 * doesn't send the response back to the VF
 */
static void ice_vc_reset_vf_msg(struct ice_vf *vf)
{
        if (test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states))
                ice_reset_vf(vf, false);
}

/**
 * ice_find_vsi_from_id
 * @pf: the PF structure to search for the VSI
 * @id: ID of the VSI it is searching for
 *
 * searches for the VSI with the given ID
 */
static struct ice_vsi *ice_find_vsi_from_id(struct ice_pf *pf, u16 id)
{
        int i;

        ice_for_each_vsi(pf, i)
                if (pf->vsi[i] && pf->vsi[i]->vsi_num == id)
                        return pf->vsi[i];

        return NULL;
}

/**
 * ice_vc_isvalid_vsi_id
 * @vf: pointer to the VF info
 * @vsi_id: VF relative VSI ID
 *
 * check for the valid VSI ID
 */
static bool ice_vc_isvalid_vsi_id(struct ice_vf *vf, u16 vsi_id)
{
        struct ice_pf *pf = vf->pf;
        struct ice_vsi *vsi;

        vsi = ice_find_vsi_from_id(pf, vsi_id);

        return (vsi && (vsi->vf_id == vf->vf_id));
}

/**
 * ice_vc_isvalid_q_id
 * @vf: pointer to the VF info
 * @vsi_id: VSI ID
 * @qid: VSI relative queue ID
 *
 * check for the valid queue ID
 */
static bool ice_vc_isvalid_q_id(struct ice_vf *vf, u16 vsi_id, u8 qid)
{
        struct ice_vsi *vsi = ice_find_vsi_from_id(vf->pf, vsi_id);
        /* allocated Tx and Rx queues should be always equal for VF VSI */
        return (vsi && (qid < vsi->alloc_txq));
}

/**
 * ice_vc_config_rss_key
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 *
 * Configure the VF's RSS key
 */
static int ice_vc_config_rss_key(struct ice_vf *vf, u8 *msg)
{
        enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
        struct virtchnl_rss_key *vrk =
                (struct virtchnl_rss_key *)msg;
        struct ice_pf *pf = vf->pf;
        struct ice_vsi *vsi = NULL;

        if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        if (!ice_vc_isvalid_vsi_id(vf, vrk->vsi_id)) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        vsi = pf->vsi[vf->lan_vsi_idx];
        if (!vsi) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        if (vrk->key_len != ICE_VSIQF_HKEY_ARRAY_SIZE) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        if (!test_bit(ICE_FLAG_RSS_ENA, vf->pf->flags)) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        if (ice_set_rss(vsi, vrk->key, NULL, 0))
                v_ret = VIRTCHNL_STATUS_ERR_ADMIN_QUEUE_ERROR;
error_param:
        return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_KEY, v_ret,
                                     NULL, 0);
}

/**
 * ice_vc_config_rss_lut
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 *
 * Configure the VF's RSS LUT
 */
static int ice_vc_config_rss_lut(struct ice_vf *vf, u8 *msg)
{
        struct virtchnl_rss_lut *vrl = (struct virtchnl_rss_lut *)msg;
        enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
        struct ice_pf *pf = vf->pf;
        struct ice_vsi *vsi = NULL;

        if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        if (!ice_vc_isvalid_vsi_id(vf, vrl->vsi_id)) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        vsi = pf->vsi[vf->lan_vsi_idx];
        if (!vsi) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        if (vrl->lut_entries != ICE_VSIQF_HLUT_ARRAY_SIZE) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        if (!test_bit(ICE_FLAG_RSS_ENA, vf->pf->flags)) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        if (ice_set_rss(vsi, NULL, vrl->lut, ICE_VSIQF_HLUT_ARRAY_SIZE))
                v_ret = VIRTCHNL_STATUS_ERR_ADMIN_QUEUE_ERROR;
error_param:
        return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_LUT, v_ret,
                                     NULL, 0);
}

/**
 * ice_vc_get_stats_msg
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 *
 * called from the VF to get VSI stats
 */
static int ice_vc_get_stats_msg(struct ice_vf *vf, u8 *msg)
{
        enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
        struct virtchnl_queue_select *vqs =
                (struct virtchnl_queue_select *)msg;
        struct ice_pf *pf = vf->pf;
        struct ice_eth_stats stats;
        struct ice_vsi *vsi;

        if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        if (!ice_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        vsi = pf->vsi[vf->lan_vsi_idx];
        if (!vsi) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        memset(&stats, 0, sizeof(struct ice_eth_stats));
        ice_update_eth_stats(vsi);

        stats = vsi->eth_stats;

error_param:
        /* send the response to the VF */
        return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_STATS, v_ret,
                                     (u8 *)&stats, sizeof(stats));
}

/**
 * ice_vc_ena_qs_msg
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 *
 * called from the VF to enable all or specific queue(s)
 */
static int ice_vc_ena_qs_msg(struct ice_vf *vf, u8 *msg)
{
        enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
        struct virtchnl_queue_select *vqs =
            (struct virtchnl_queue_select *)msg;
        struct ice_pf *pf = vf->pf;
        struct ice_vsi *vsi;

        if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        if (!ice_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        if (!vqs->rx_queues && !vqs->tx_queues) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        vsi = pf->vsi[vf->lan_vsi_idx];
        if (!vsi) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        /* Enable only Rx rings, Tx rings were enabled by the FW when the
         * Tx queue group list was configured and the context bits were
         * programmed using ice_vsi_cfg_txqs
         */
        if (ice_vsi_start_rx_rings(vsi))
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;

        /* Set flag to indicate that queues are enabled */
        if (v_ret == VIRTCHNL_STATUS_SUCCESS)
                set_bit(ICE_VF_STATE_ENA, vf->vf_states);

error_param:
        /* send the response to the VF */
        return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_ENABLE_QUEUES, v_ret,
                                     NULL, 0);
}

/**
 * ice_vc_dis_qs_msg
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 *
 * called from the VF to disable all or specific
 * queue(s)
 */
static int ice_vc_dis_qs_msg(struct ice_vf *vf, u8 *msg)
{
        enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
        struct virtchnl_queue_select *vqs =
            (struct virtchnl_queue_select *)msg;
        struct ice_pf *pf = vf->pf;
        struct ice_vsi *vsi;

        if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states) &&
            !test_bit(ICE_VF_STATE_ENA, vf->vf_states)) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        if (!ice_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        if (!vqs->rx_queues && !vqs->tx_queues) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        vsi = pf->vsi[vf->lan_vsi_idx];
        if (!vsi) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        if (ice_vsi_stop_lan_tx_rings(vsi, ICE_NO_RESET, vf->vf_id)) {
                dev_err(&vsi->back->pdev->dev,
                        "Failed to stop tx rings on VSI %d\n",
                        vsi->vsi_num);
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
        }

        if (ice_vsi_stop_rx_rings(vsi)) {
                dev_err(&vsi->back->pdev->dev,
                        "Failed to stop rx rings on VSI %d\n",
                        vsi->vsi_num);
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
        }

        /* Clear enabled queues flag */
        if (v_ret == VIRTCHNL_STATUS_SUCCESS)
                clear_bit(ICE_VF_STATE_ENA, vf->vf_states);

error_param:
        /* send the response to the VF */
        return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_DISABLE_QUEUES, v_ret,
                                     NULL, 0);
}

/**
 * ice_vc_cfg_irq_map_msg
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 *
 * called from the VF to configure the IRQ to queue map
 */
static int ice_vc_cfg_irq_map_msg(struct ice_vf *vf, u8 *msg)
{
        enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
        struct virtchnl_irq_map_info *irqmap_info;
        u16 vsi_id, vsi_q_id, vector_id;
        struct virtchnl_vector_map *map;
        struct ice_pf *pf = vf->pf;
        u16 num_q_vectors_mapped;
        struct ice_vsi *vsi;
        unsigned long qmap;
        int i;

        irqmap_info = (struct virtchnl_irq_map_info *)msg;
        num_q_vectors_mapped = irqmap_info->num_vectors;

        vsi = pf->vsi[vf->lan_vsi_idx];
        if (!vsi) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        /* Check to make sure number of VF vectors mapped is not greater than
         * number of VF vectors originally allocated, and check that
         * there is actually at least a single VF queue vector mapped
         */
        if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states) ||
            pf->num_vf_msix < num_q_vectors_mapped ||
            !irqmap_info->num_vectors) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        for (i = 0; i < num_q_vectors_mapped; i++) {
                struct ice_q_vector *q_vector;

                map = &irqmap_info->vecmap[i];

                vector_id = map->vector_id;
                vsi_id = map->vsi_id;
                /* validate msg params */
                if (!(vector_id < pf->hw.func_caps.common_cap
                    .num_msix_vectors) || !ice_vc_isvalid_vsi_id(vf, vsi_id) ||
                    (!vector_id && (map->rxq_map || map->txq_map))) {
                        v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                        goto error_param;
                }

                /* No need to map VF miscellaneous or rogue vector */
                if (!vector_id)
                        continue;

                /* Subtract non queue vector from vector_id passed by VF
                 * to get actual number of VSI queue vector array index
                 */
                q_vector = vsi->q_vectors[vector_id - ICE_NONQ_VECS_VF];
                if (!q_vector) {
                        v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                        goto error_param;
                }

                /* lookout for the invalid queue index */
                qmap = map->rxq_map;
                q_vector->num_ring_rx = 0;
                for_each_set_bit(vsi_q_id, &qmap, ICE_MAX_BASE_QS_PER_VF) {
                        if (!ice_vc_isvalid_q_id(vf, vsi_id, vsi_q_id)) {
                                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                                goto error_param;
                        }
                        q_vector->num_ring_rx++;
                        q_vector->rx.itr_idx = map->rxitr_idx;
                        vsi->rx_rings[vsi_q_id]->q_vector = q_vector;
                        ice_cfg_rxq_interrupt(vsi, vsi_q_id, vector_id,
                                              q_vector->rx.itr_idx);
                }

                qmap = map->txq_map;
                q_vector->num_ring_tx = 0;
                for_each_set_bit(vsi_q_id, &qmap, ICE_MAX_BASE_QS_PER_VF) {
                        if (!ice_vc_isvalid_q_id(vf, vsi_id, vsi_q_id)) {
                                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                                goto error_param;
                        }
                        q_vector->num_ring_tx++;
                        q_vector->tx.itr_idx = map->txitr_idx;
                        vsi->tx_rings[vsi_q_id]->q_vector = q_vector;
                        ice_cfg_txq_interrupt(vsi, vsi_q_id, vector_id,
                                              q_vector->tx.itr_idx);
                }
        }

error_param:
        /* send the response to the VF */
        return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_CONFIG_IRQ_MAP, v_ret,
                                     NULL, 0);
}

/**
 * ice_vc_cfg_qs_msg
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 *
 * called from the VF to configure the Rx/Tx queues
 */
static int ice_vc_cfg_qs_msg(struct ice_vf *vf, u8 *msg)
{
        enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
        struct virtchnl_vsi_queue_config_info *qci =
            (struct virtchnl_vsi_queue_config_info *)msg;
        struct virtchnl_queue_pair_info *qpi;
        struct ice_pf *pf = vf->pf;
        struct ice_vsi *vsi;
        int i;

        if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        if (!ice_vc_isvalid_vsi_id(vf, qci->vsi_id)) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        vsi = pf->vsi[vf->lan_vsi_idx];
        if (!vsi)
                goto error_param;

        if (qci->num_queue_pairs > ICE_MAX_BASE_QS_PER_VF) {
                dev_err(&pf->pdev->dev,
                        "VF-%d requesting more than supported number of queues: %d\n",
                        vf->vf_id, qci->num_queue_pairs);
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        for (i = 0; i < qci->num_queue_pairs; i++) {
                qpi = &qci->qpair[i];
                if (qpi->txq.vsi_id != qci->vsi_id ||
                    qpi->rxq.vsi_id != qci->vsi_id ||
                    qpi->rxq.queue_id != qpi->txq.queue_id ||
                    !ice_vc_isvalid_q_id(vf, qci->vsi_id, qpi->txq.queue_id)) {
                        v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                        goto error_param;
                }
                /* copy Tx queue info from VF into VSI */
                vsi->tx_rings[i]->dma = qpi->txq.dma_ring_addr;
                vsi->tx_rings[i]->count = qpi->txq.ring_len;
                /* copy Rx queue info from VF into VSI */
                vsi->rx_rings[i]->dma = qpi->rxq.dma_ring_addr;
                vsi->rx_rings[i]->count = qpi->rxq.ring_len;
                if (qpi->rxq.databuffer_size > ((16 * 1024) - 128)) {
                        v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                        goto error_param;
                }
                vsi->rx_buf_len = qpi->rxq.databuffer_size;
                if (qpi->rxq.max_pkt_size >= (16 * 1024) ||
                    qpi->rxq.max_pkt_size < 64) {
                        v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                        goto error_param;
                }
                vsi->max_frame = qpi->rxq.max_pkt_size;
        }

        /* VF can request to configure less than allocated queues
         * or default allocated queues. So update the VSI with new number
         */
        vsi->num_txq = qci->num_queue_pairs;
        vsi->num_rxq = qci->num_queue_pairs;
        /* All queues of VF VSI are in TC 0 */
        vsi->tc_cfg.tc_info[0].qcount_tx = qci->num_queue_pairs;
        vsi->tc_cfg.tc_info[0].qcount_rx = qci->num_queue_pairs;

        if (ice_vsi_cfg_lan_txqs(vsi) || ice_vsi_cfg_rxqs(vsi))
                v_ret = VIRTCHNL_STATUS_ERR_ADMIN_QUEUE_ERROR;

error_param:
        /* send the response to the VF */
        return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_CONFIG_VSI_QUEUES, v_ret,
                                     NULL, 0);
}

/**
 * ice_is_vf_trusted
 * @vf: pointer to the VF info
 */
static bool ice_is_vf_trusted(struct ice_vf *vf)
{
        return test_bit(ICE_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
}

/**
 * ice_can_vf_change_mac
 * @vf: pointer to the VF info
 *
 * Return true if the VF is allowed to change its MAC filters, false otherwise
 */
static bool ice_can_vf_change_mac(struct ice_vf *vf)
{
        /* If the VF MAC address has been set administratively (via the
         * ndo_set_vf_mac command), then deny permission to the VF to
         * add/delete unicast MAC addresses, unless the VF is trusted
         */
        if (vf->pf_set_mac && !ice_is_vf_trusted(vf))
                return false;

        return true;
}

/**
 * ice_vc_handle_mac_addr_msg
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 * @set: true if MAC filters are being set, false otherwise
 *
 * add guest MAC address filter
 */
static int
ice_vc_handle_mac_addr_msg(struct ice_vf *vf, u8 *msg, bool set)
{
        enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
        struct virtchnl_ether_addr_list *al =
            (struct virtchnl_ether_addr_list *)msg;
        struct ice_pf *pf = vf->pf;
        enum virtchnl_ops vc_op;
        LIST_HEAD(mac_list);
        struct ice_vsi *vsi;
        int mac_count = 0;
        int i;

        if (set)
                vc_op = VIRTCHNL_OP_ADD_ETH_ADDR;
        else
                vc_op = VIRTCHNL_OP_DEL_ETH_ADDR;

        if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states) ||
            !ice_vc_isvalid_vsi_id(vf, al->vsi_id)) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto handle_mac_exit;
        }

        if (set && !ice_is_vf_trusted(vf) &&
            (vf->num_mac + al->num_elements) > ICE_MAX_MACADDR_PER_VF) {
                dev_err(&pf->pdev->dev,
                        "Can't add more MAC addresses, because VF-%d is not trusted, switch the VF to trusted mode in order to add more functionalities\n",
                        vf->vf_id);
                /* There is no need to let VF know about not being trusted
                 * to add more MAC addr, so we can just return success message.
                 */
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto handle_mac_exit;
        }

        vsi = pf->vsi[vf->lan_vsi_idx];
        if (!vsi) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto handle_mac_exit;
        }

        for (i = 0; i < al->num_elements; i++) {
                u8 *maddr = al->list[i].addr;

                if (ether_addr_equal(maddr, vf->dflt_lan_addr.addr) ||
                    is_broadcast_ether_addr(maddr)) {
                        if (set) {
                                /* VF is trying to add filters that the PF
                                 * already added. Just continue.
                                 */
                                dev_info(&pf->pdev->dev,
                                         "MAC %pM already set for VF %d\n",
                                         maddr, vf->vf_id);
                                continue;
                        } else {
                                /* VF can't remove dflt_lan_addr/bcast MAC */
                                dev_err(&pf->pdev->dev,
                                        "VF can't remove default MAC address or MAC %pM programmed by PF for VF %d\n",
                                        maddr, vf->vf_id);
                                continue;
                        }
                }

                /* check for the invalid cases and bail if necessary */
                if (is_zero_ether_addr(maddr)) {
                        dev_err(&pf->pdev->dev,
                                "invalid MAC %pM provided for VF %d\n",
                                maddr, vf->vf_id);
                        v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                        goto handle_mac_exit;
                }

                if (is_unicast_ether_addr(maddr) &&
                    !ice_can_vf_change_mac(vf)) {
                        dev_err(&pf->pdev->dev,
                                "can't change unicast MAC for untrusted VF %d\n",
                                vf->vf_id);
                        v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                        goto handle_mac_exit;
                }

                /* get here if maddr is multicast or if VF can change MAC */
                if (ice_add_mac_to_list(vsi, &mac_list, al->list[i].addr)) {
                        v_ret = VIRTCHNL_STATUS_ERR_NO_MEMORY;
                        goto handle_mac_exit;
                }
                mac_count++;
        }

        /* program the updated filter list */
        if (set)
                v_ret = ice_err_to_virt_err(ice_add_mac(&pf->hw, &mac_list));
        else
                v_ret = ice_err_to_virt_err(ice_remove_mac(&pf->hw, &mac_list));

        if (v_ret) {
                dev_err(&pf->pdev->dev,
                        "can't update MAC filters for VF %d, error %d\n",
                        vf->vf_id, v_ret);
        } else {
                if (set)
                        vf->num_mac += mac_count;
                else
                        vf->num_mac -= mac_count;
        }

handle_mac_exit:
        ice_free_fltr_list(&pf->pdev->dev, &mac_list);
        /* send the response to the VF */
        return ice_vc_send_msg_to_vf(vf, vc_op, v_ret, NULL, 0);
}

/**
 * ice_vc_add_mac_addr_msg
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 *
 * add guest MAC address filter
 */
static int ice_vc_add_mac_addr_msg(struct ice_vf *vf, u8 *msg)
{
        return ice_vc_handle_mac_addr_msg(vf, msg, true);
}

/**
 * ice_vc_del_mac_addr_msg
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 *
 * remove guest MAC address filter
 */
static int ice_vc_del_mac_addr_msg(struct ice_vf *vf, u8 *msg)
{
        return ice_vc_handle_mac_addr_msg(vf, msg, false);
}

/**
 * ice_vc_request_qs_msg
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 *
 * VFs get a default number of queues but can use this message to request a
 * different number. If the request is successful, PF will reset the VF and
 * return 0. If unsuccessful, PF will send message informing VF of number of
 * available queue pairs via virtchnl message response to VF.
 */
static int ice_vc_request_qs_msg(struct ice_vf *vf, u8 *msg)
{
        enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
        struct virtchnl_vf_res_request *vfres =
                (struct virtchnl_vf_res_request *)msg;
        int req_queues = vfres->num_queue_pairs;
        struct ice_pf *pf = vf->pf;
        int max_allowed_vf_queues;
        int tx_rx_queue_left;
        int cur_queues;

        if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        cur_queues = vf->num_vf_qs;
        tx_rx_queue_left = min_t(int, pf->q_left_tx, pf->q_left_rx);
        max_allowed_vf_queues = tx_rx_queue_left + cur_queues;
        if (req_queues <= 0) {
                dev_err(&pf->pdev->dev,
                        "VF %d tried to request %d queues. Ignoring.\n",
                        vf->vf_id, req_queues);
        } else if (req_queues > ICE_MAX_BASE_QS_PER_VF) {
                dev_err(&pf->pdev->dev,
                        "VF %d tried to request more than %d queues.\n",
                        vf->vf_id, ICE_MAX_BASE_QS_PER_VF);
                vfres->num_queue_pairs = ICE_MAX_BASE_QS_PER_VF;
        } else if (req_queues - cur_queues > tx_rx_queue_left) {
                dev_warn(&pf->pdev->dev,
                         "VF %d requested %d more queues, but only %d left.\n",
                         vf->vf_id, req_queues - cur_queues, tx_rx_queue_left);
                vfres->num_queue_pairs = min_t(int, max_allowed_vf_queues,
                                               ICE_MAX_BASE_QS_PER_VF);
        } else {
                /* request is successful, then reset VF */
                vf->num_req_qs = req_queues;
                ice_vc_dis_vf(vf);
                dev_info(&pf->pdev->dev,
                         "VF %d granted request of %d queues.\n",
                         vf->vf_id, req_queues);
                return 0;
        }

error_param:
        /* send the response to the VF */
        return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_REQUEST_QUEUES,
                                     v_ret, (u8 *)vfres, sizeof(*vfres));
}

/**
 * ice_set_vf_port_vlan
 * @netdev: network interface device structure
 * @vf_id: VF identifier
 * @vlan_id: VLAN ID being set
 * @qos: priority setting
 * @vlan_proto: VLAN protocol
 *
 * program VF Port VLAN ID and/or QoS
 */
int
ice_set_vf_port_vlan(struct net_device *netdev, int vf_id, u16 vlan_id, u8 qos,
                     __be16 vlan_proto)
{
        u16 vlanprio = vlan_id | (qos << ICE_VLAN_PRIORITY_S);
        struct ice_netdev_priv *np = netdev_priv(netdev);
        struct ice_pf *pf = np->vsi->back;
        struct ice_vsi *vsi;
        struct ice_vf *vf;
        int ret = 0;

        /* validate the request */
        if (vf_id >= pf->num_alloc_vfs) {
                dev_err(&pf->pdev->dev, "invalid VF id: %d\n", vf_id);
                return -EINVAL;
        }

        if (vlan_id > ICE_MAX_VLANID || qos > 7) {
                dev_err(&pf->pdev->dev, "Invalid VF Parameters\n");
                return -EINVAL;
        }

        if (vlan_proto != htons(ETH_P_8021Q)) {
                dev_err(&pf->pdev->dev, "VF VLAN protocol is not supported\n");
                return -EPROTONOSUPPORT;
        }

        vf = &pf->vf[vf_id];
        vsi = pf->vsi[vf->lan_vsi_idx];
        if (!test_bit(ICE_VF_STATE_INIT, vf->vf_states)) {
                dev_err(&pf->pdev->dev, "VF %d in reset. Try again.\n", vf_id);
                return -EBUSY;
        }

        if (le16_to_cpu(vsi->info.pvid) == vlanprio) {
                /* duplicate request, so just return success */
                dev_info(&pf->pdev->dev,
                         "Duplicate pvid %d request\n", vlanprio);
                return ret;
        }

        /* If PVID, then remove all filters on the old VLAN */
        if (vsi->info.pvid)
                ice_vsi_kill_vlan(vsi, (le16_to_cpu(vsi->info.pvid) &
                                  VLAN_VID_MASK));

        if (vlan_id || qos) {
                ret = ice_vsi_manage_pvid(vsi, vlanprio, true);
                if (ret)
                        goto error_set_pvid;
        } else {
                ice_vsi_manage_pvid(vsi, 0, false);
                vsi->info.pvid = 0;
        }

        if (vlan_id) {
                dev_info(&pf->pdev->dev, "Setting VLAN %d, QOS 0x%x on VF %d\n",
                         vlan_id, qos, vf_id);

                /* add new VLAN filter for each MAC */
                ret = ice_vsi_add_vlan(vsi, vlan_id);
                if (ret)
                        goto error_set_pvid;
        }

        /* The Port VLAN needs to be saved across resets the same as the
         * default LAN MAC address.
         */
        vf->port_vlan_id = le16_to_cpu(vsi->info.pvid);

error_set_pvid:
        return ret;
}

/**
 * ice_vc_process_vlan_msg
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 * @add_v: Add VLAN if true, otherwise delete VLAN
 *
 * Process virtchnl op to add or remove programmed guest VLAN ID
 */
static int ice_vc_process_vlan_msg(struct ice_vf *vf, u8 *msg, bool add_v)
{
        enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
        struct virtchnl_vlan_filter_list *vfl =
            (struct virtchnl_vlan_filter_list *)msg;
        struct ice_pf *pf = vf->pf;
        bool vlan_promisc = false;
        struct ice_vsi *vsi;
        struct ice_hw *hw;
        int status = 0;
        u8 promisc_m;
        int i;

        if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        if (!ice_vc_isvalid_vsi_id(vf, vfl->vsi_id)) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        if (add_v && !ice_is_vf_trusted(vf) &&
            vf->num_vlan >= ICE_MAX_VLAN_PER_VF) {
                dev_info(&pf->pdev->dev,
                         "VF-%d is not trusted, switch the VF to trusted mode, in order to add more VLAN addresses\n",
                         vf->vf_id);
                /* There is no need to let VF know about being not trusted,
                 * so we can just return success message here
                 */
                goto error_param;
        }

        for (i = 0; i < vfl->num_elements; i++) {
                if (vfl->vlan_id[i] > ICE_MAX_VLANID) {
                        v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                        dev_err(&pf->pdev->dev,
                                "invalid VF VLAN id %d\n", vfl->vlan_id[i]);
                        goto error_param;
                }
        }

        hw = &pf->hw;
        vsi = pf->vsi[vf->lan_vsi_idx];
        if (!vsi) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        if (vsi->info.pvid) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        if (ice_vsi_manage_vlan_stripping(vsi, add_v)) {
                dev_err(&pf->pdev->dev,
                        "%sable VLAN stripping failed for VSI %i\n",
                         add_v ? "en" : "dis", vsi->vsi_num);
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        if (test_bit(ICE_VF_STATE_UC_PROMISC, vf->vf_states) ||
            test_bit(ICE_VF_STATE_MC_PROMISC, vf->vf_states))
                vlan_promisc = true;

        if (add_v) {
                for (i = 0; i < vfl->num_elements; i++) {
                        u16 vid = vfl->vlan_id[i];

                        if (!ice_is_vf_trusted(vf) &&
                            vf->num_vlan >= ICE_MAX_VLAN_PER_VF) {
                                dev_info(&pf->pdev->dev,
                                         "VF-%d is not trusted, switch the VF to trusted mode, in order to add more VLAN addresses\n",
                                         vf->vf_id);
                                /* There is no need to let VF know about being
                                 * not trusted, so we can just return success
                                 * message here as well.
                                 */
                                goto error_param;
                        }

                        if (ice_vsi_add_vlan(vsi, vid)) {
                                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                                goto error_param;
                        }

                        vf->num_vlan++;
                        /* Enable VLAN pruning when VLAN is added */
                        if (!vlan_promisc) {
                                status = ice_cfg_vlan_pruning(vsi, true, false);
                                if (status) {
                                        v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                                        dev_err(&pf->pdev->dev,
                                                "Enable VLAN pruning on VLAN ID: %d failed error-%d\n",
                                                vid, status);
                                        goto error_param;
                                }
                        } else {
                                /* Enable Ucast/Mcast VLAN promiscuous mode */
                                promisc_m = ICE_PROMISC_VLAN_TX |
                                            ICE_PROMISC_VLAN_RX;

                                status = ice_set_vsi_promisc(hw, vsi->idx,
                                                             promisc_m, vid);
                                if (status) {
                                        v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                                        dev_err(&pf->pdev->dev,
                                                "Enable Unicast/multicast promiscuous mode on VLAN ID:%d failed error-%d\n",
                                                vid, status);
                                }
                        }
                }
        } else {
                /* In case of non_trusted VF, number of VLAN elements passed
                 * to PF for removal might be greater than number of VLANs
                 * filter programmed for that VF - So, use actual number of
                 * VLANS added earlier with add VLAN opcode. In order to avoid
                 * removing VLAN that doesn't exist, which result to sending
                 * erroneous failed message back to the VF
                 */
                int num_vf_vlan;

                num_vf_vlan = vf->num_vlan;
                for (i = 0; i < vfl->num_elements && i < num_vf_vlan; i++) {
                        u16 vid = vfl->vlan_id[i];

                        /* Make sure ice_vsi_kill_vlan is successful before
                         * updating VLAN information
                         */
                        if (ice_vsi_kill_vlan(vsi, vid)) {
                                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                                goto error_param;
                        }

                        vf->num_vlan--;
                        /* Disable VLAN pruning when removing VLAN */
                        ice_cfg_vlan_pruning(vsi, false, false);

                        /* Disable Unicast/Multicast VLAN promiscuous mode */
                        if (vlan_promisc) {
                                promisc_m = ICE_PROMISC_VLAN_TX |
                                            ICE_PROMISC_VLAN_RX;

                                ice_clear_vsi_promisc(hw, vsi->idx,
                                                      promisc_m, vid);
                        }
                }
        }

error_param:
        /* send the response to the VF */
        if (add_v)
                return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_ADD_VLAN, v_ret,
                                             NULL, 0);
        else
                return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_DEL_VLAN, v_ret,
                                             NULL, 0);
}

/**
 * ice_vc_add_vlan_msg
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 *
 * Add and program guest VLAN ID
 */
static int ice_vc_add_vlan_msg(struct ice_vf *vf, u8 *msg)
{
        return ice_vc_process_vlan_msg(vf, msg, true);
}

/**
 * ice_vc_remove_vlan_msg
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 *
 * remove programmed guest VLAN ID
 */
static int ice_vc_remove_vlan_msg(struct ice_vf *vf, u8 *msg)
{
        return ice_vc_process_vlan_msg(vf, msg, false);
}

/**
 * ice_vc_ena_vlan_stripping
 * @vf: pointer to the VF info
 *
 * Enable VLAN header stripping for a given VF
 */
static int ice_vc_ena_vlan_stripping(struct ice_vf *vf)
{
        enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
        struct ice_pf *pf = vf->pf;
        struct ice_vsi *vsi;

        if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        vsi = pf->vsi[vf->lan_vsi_idx];
        if (ice_vsi_manage_vlan_stripping(vsi, true))
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;

error_param:
        return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_ENABLE_VLAN_STRIPPING,
                                     v_ret, NULL, 0);
}

/**
 * ice_vc_dis_vlan_stripping
 * @vf: pointer to the VF info
 *
 * Disable VLAN header stripping for a given VF
 */
static int ice_vc_dis_vlan_stripping(struct ice_vf *vf)
{
        enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
        struct ice_pf *pf = vf->pf;
        struct ice_vsi *vsi;

        if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        vsi = pf->vsi[vf->lan_vsi_idx];
        if (!vsi) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        if (ice_vsi_manage_vlan_stripping(vsi, false))
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;

error_param:
        return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_DISABLE_VLAN_STRIPPING,
                                     v_ret, NULL, 0);
}

/**
 * ice_vc_process_vf_msg - Process request from VF
 * @pf: pointer to the PF structure
 * @event: pointer to the AQ event
 *
 * called from the common asq/arq handler to
 * process request from VF
 */
void ice_vc_process_vf_msg(struct ice_pf *pf, struct ice_rq_event_info *event)
{
        u32 v_opcode = le32_to_cpu(event->desc.cookie_high);
        s16 vf_id = le16_to_cpu(event->desc.retval);
        u16 msglen = event->msg_len;
        u8 *msg = event->msg_buf;
        struct ice_vf *vf = NULL;
        int err = 0;

        if (vf_id >= pf->num_alloc_vfs) {
                err = -EINVAL;
                goto error_handler;
        }

        vf = &pf->vf[vf_id];

        /* Check if VF is disabled. */
        if (test_bit(ICE_VF_STATE_DIS, vf->vf_states)) {
                err = -EPERM;
                goto error_handler;
        }

        /* Perform basic checks on the msg */
        err = virtchnl_vc_validate_vf_msg(&vf->vf_ver, v_opcode, msg, msglen);
        if (err) {
                if (err == VIRTCHNL_STATUS_ERR_PARAM)
                        err = -EPERM;
                else
                        err = -EINVAL;
                goto error_handler;
        }

        /* Perform additional checks specific to RSS and Virtchnl */
        if (v_opcode == VIRTCHNL_OP_CONFIG_RSS_KEY) {
                struct virtchnl_rss_key *vrk = (struct virtchnl_rss_key *)msg;

                if (vrk->key_len != ICE_VSIQF_HKEY_ARRAY_SIZE)
                        err = -EINVAL;
        } else if (v_opcode == VIRTCHNL_OP_CONFIG_RSS_LUT) {
                struct virtchnl_rss_lut *vrl = (struct virtchnl_rss_lut *)msg;

                if (vrl->lut_entries != ICE_VSIQF_HLUT_ARRAY_SIZE)
                        err = -EINVAL;
        }

error_handler:
        if (err) {
                ice_vc_send_msg_to_vf(vf, v_opcode, VIRTCHNL_STATUS_ERR_PARAM,
                                      NULL, 0);
                dev_err(&pf->pdev->dev, "Invalid message from VF %d, opcode %d, len %d, error %d\n",
                        vf_id, v_opcode, msglen, err);
                return;
        }

        switch (v_opcode) {
        case VIRTCHNL_OP_VERSION:
                err = ice_vc_get_ver_msg(vf, msg);
                break;
        case VIRTCHNL_OP_GET_VF_RESOURCES:
                err = ice_vc_get_vf_res_msg(vf, msg);
                break;
        case VIRTCHNL_OP_RESET_VF:
                ice_vc_reset_vf_msg(vf);
                break;
        case VIRTCHNL_OP_ADD_ETH_ADDR:
                err = ice_vc_add_mac_addr_msg(vf, msg);
                break;
        case VIRTCHNL_OP_DEL_ETH_ADDR:
                err = ice_vc_del_mac_addr_msg(vf, msg);
                break;
        case VIRTCHNL_OP_CONFIG_VSI_QUEUES:
                err = ice_vc_cfg_qs_msg(vf, msg);
                break;
        case VIRTCHNL_OP_ENABLE_QUEUES:
                err = ice_vc_ena_qs_msg(vf, msg);
                ice_vc_notify_vf_link_state(vf);
                break;
        case VIRTCHNL_OP_DISABLE_QUEUES:
                err = ice_vc_dis_qs_msg(vf, msg);
                break;
        case VIRTCHNL_OP_REQUEST_QUEUES:
                err = ice_vc_request_qs_msg(vf, msg);
                break;
        case VIRTCHNL_OP_CONFIG_IRQ_MAP:
                err = ice_vc_cfg_irq_map_msg(vf, msg);
                break;
        case VIRTCHNL_OP_CONFIG_RSS_KEY:
                err = ice_vc_config_rss_key(vf, msg);
                break;
        case VIRTCHNL_OP_CONFIG_RSS_LUT:
                err = ice_vc_config_rss_lut(vf, msg);
                break;
        case VIRTCHNL_OP_GET_STATS:
                err = ice_vc_get_stats_msg(vf, msg);
                break;
        case VIRTCHNL_OP_ADD_VLAN:
                err = ice_vc_add_vlan_msg(vf, msg);
                break;
        case VIRTCHNL_OP_DEL_VLAN:
                err = ice_vc_remove_vlan_msg(vf, msg);
                break;
        case VIRTCHNL_OP_ENABLE_VLAN_STRIPPING:
                err = ice_vc_ena_vlan_stripping(vf);
                break;
        case VIRTCHNL_OP_DISABLE_VLAN_STRIPPING:
                err = ice_vc_dis_vlan_stripping(vf);
                break;
        case VIRTCHNL_OP_UNKNOWN:
        default:
                dev_err(&pf->pdev->dev, "Unsupported opcode %d from VF %d\n",
                        v_opcode, vf_id);
                err = ice_vc_send_msg_to_vf(vf, v_opcode,
                                            VIRTCHNL_STATUS_ERR_NOT_SUPPORTED,
                                            NULL, 0);
                break;
        }
        if (err) {
                /* Helper function cares less about error return values here
                 * as it is busy with pending work.
                 */
                dev_info(&pf->pdev->dev,
                         "PF failed to honor VF %d, opcode %d, error %d\n",
                         vf_id, v_opcode, err);
        }
}

/**
 * ice_get_vf_cfg
 * @netdev: network interface device structure
 * @vf_id: VF identifier
 * @ivi: VF configuration structure
 *
 * return VF configuration
 */
int
ice_get_vf_cfg(struct net_device *netdev, int vf_id, struct ifla_vf_info *ivi)
{
        struct ice_netdev_priv *np = netdev_priv(netdev);
        struct ice_vsi *vsi = np->vsi;
        struct ice_pf *pf = vsi->back;
        struct ice_vf *vf;

        /* validate the request */
        if (vf_id >= pf->num_alloc_vfs) {
                netdev_err(netdev, "invalid VF id: %d\n", vf_id);
                return -EINVAL;
        }

        vf = &pf->vf[vf_id];
        vsi = pf->vsi[vf->lan_vsi_idx];

        if (!test_bit(ICE_VF_STATE_INIT, vf->vf_states)) {
                netdev_err(netdev, "VF %d in reset. Try again.\n", vf_id);
                return -EBUSY;
        }

        ivi->vf = vf_id;
        ether_addr_copy(ivi->mac, vf->dflt_lan_addr.addr);

        /* VF configuration for VLAN and applicable QoS */
        ivi->vlan = le16_to_cpu(vsi->info.pvid) & ICE_VLAN_M;
        ivi->qos = (le16_to_cpu(vsi->info.pvid) & ICE_PRIORITY_M) >>
                    ICE_VLAN_PRIORITY_S;

        ivi->trusted = vf->trusted;
        ivi->spoofchk = vf->spoofchk;
        if (!vf->link_forced)
                ivi->linkstate = IFLA_VF_LINK_STATE_AUTO;
        else if (vf->link_up)
                ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE;
        else
                ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE;
        ivi->max_tx_rate = vf->tx_rate;
        ivi->min_tx_rate = 0;
        return 0;
}

/**
 * ice_set_vf_spoofchk
 * @netdev: network interface device structure
 * @vf_id: VF identifier
 * @ena: flag to enable or disable feature
 *
 * Enable or disable VF spoof checking
 */
int ice_set_vf_spoofchk(struct net_device *netdev, int vf_id, bool ena)
{
        struct ice_netdev_priv *np = netdev_priv(netdev);
        struct ice_vsi *vsi = np->vsi;
        struct ice_pf *pf = vsi->back;
        struct ice_vsi_ctx *ctx;
        enum ice_status status;
        struct ice_vf *vf;
        int ret = 0;

        /* validate the request */
        if (vf_id >= pf->num_alloc_vfs) {
                netdev_err(netdev, "invalid VF id: %d\n", vf_id);
                return -EINVAL;
        }

        vf = &pf->vf[vf_id];
        if (!test_bit(ICE_VF_STATE_INIT, vf->vf_states)) {
                netdev_err(netdev, "VF %d in reset. Try again.\n", vf_id);
                return -EBUSY;
        }

        if (ena == vf->spoofchk) {
                dev_dbg(&pf->pdev->dev, "VF spoofchk already %s\n",
                        ena ? "ON" : "OFF");
                return 0;
        }

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

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

        if (ena) {
                ctx->info.sec_flags |= ICE_AQ_VSI_SEC_FLAG_ENA_MAC_ANTI_SPOOF;
                ctx->info.sw_flags2 |= ICE_AQ_VSI_SW_FLAG_RX_PRUNE_EN_M;
        }

        status = ice_update_vsi(&pf->hw, vsi->idx, ctx, NULL);
        if (status) {
                dev_dbg(&pf->pdev->dev,
                        "Error %d, failed to update VSI* parameters\n", status);
                ret = -EIO;
                goto out;
        }

        vf->spoofchk = ena;
        vsi->info.sec_flags = ctx->info.sec_flags;
        vsi->info.sw_flags2 = ctx->info.sw_flags2;
out:
        devm_kfree(&pf->pdev->dev, ctx);
        return ret;
}

/**
 * ice_set_vf_mac
 * @netdev: network interface device structure
 * @vf_id: VF identifier
 * @mac: MAC address
 *
 * program VF MAC address
 */
int ice_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac)
{
        struct ice_netdev_priv *np = netdev_priv(netdev);
        struct ice_vsi *vsi = np->vsi;
        struct ice_pf *pf = vsi->back;
        struct ice_vf *vf;
        int ret = 0;

        /* validate the request */
        if (vf_id >= pf->num_alloc_vfs) {
                netdev_err(netdev, "invalid VF id: %d\n", vf_id);
                return -EINVAL;
        }

        vf = &pf->vf[vf_id];
        if (!test_bit(ICE_VF_STATE_INIT, vf->vf_states)) {
                netdev_err(netdev, "VF %d in reset. Try again.\n", vf_id);
                return -EBUSY;
        }

        if (is_zero_ether_addr(mac) || is_multicast_ether_addr(mac)) {
                netdev_err(netdev, "%pM not a valid unicast address\n", mac);
                return -EINVAL;
        }

        /* copy MAC into dflt_lan_addr and trigger a VF reset. The reset
         * flow will use the updated dflt_lan_addr and add a MAC filter
         * using ice_add_mac. Also set pf_set_mac to indicate that the PF has
         * set the MAC address for this VF.
         */
        ether_addr_copy(vf->dflt_lan_addr.addr, mac);
        vf->pf_set_mac = true;
        netdev_info(netdev,
                    "MAC on VF %d set to %pM. VF driver will be reinitialized\n",
                    vf_id, mac);

        ice_vc_dis_vf(vf);
        return ret;
}

/**
 * ice_set_vf_trust
 * @netdev: network interface device structure
 * @vf_id: VF identifier
 * @trusted: Boolean value to enable/disable trusted VF
 *
 * Enable or disable a given VF as trusted
 */