gpio: rcar: Fix runtime PM imbalance on error

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

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

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

/**
 * ice_validate_vf_id - helper to check if VF ID is valid
 * @pf: pointer to the PF structure
 * @vf_id: the ID of the VF to check
 */
static int ice_validate_vf_id(struct ice_pf *pf, int vf_id)
{
        if (vf_id >= pf->num_alloc_vfs) {
                dev_err(ice_pf_to_dev(pf), "Invalid VF ID: %d\n", vf_id);
                return -EINVAL;
        }
        return 0;
}

/**
 * ice_check_vf_init - helper to check if VF init complete
 * @pf: pointer to the PF structure
 * @vf: the pointer to the VF to check
 */
static int ice_check_vf_init(struct ice_pf *pf, struct ice_vf *vf)
{
        if (!test_bit(ICE_VF_STATE_INIT, vf->vf_states)) {
                dev_err(ice_pf_to_dev(pf), "VF ID: %d in reset. Try again.\n",
                        vf->vf_id);
                return -EBUSY;
        }
        return 0;
}

/**
 * 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;
        int i;

        ice_for_each_vf(pf, i) {
                struct ice_vf *vf = &pf->vf[i];

                /* 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_vf_has_no_qs_ena - check if the VF has any Rx or Tx queues enabled
 * @vf: the VF to check
 *
 * Returns true if the VF has no Rx and no Tx queues enabled and returns false
 * otherwise
 */
static bool ice_vf_has_no_qs_ena(struct ice_vf *vf)
{
        return (!bitmap_weight(vf->rxq_ena, ICE_MAX_RSS_QS_PER_VF) &&
                !bitmap_weight(vf->txq_ena, ICE_MAX_RSS_QS_PER_VF));
}

/**
 * ice_is_vf_link_up - check if the VF's link is up
 * @vf: VF to check if link is up
 */
static bool ice_is_vf_link_up(struct ice_vf *vf)
{
        struct ice_pf *pf = vf->pf;

        if (ice_check_vf_init(pf, vf))
                return false;

        if (ice_vf_has_no_qs_ena(vf))
                return false;
        else if (vf->link_forced)
                return vf->link_up;
        else
                return pf->hw.port_info->phy.link_info.link_info &
                        ICE_AQ_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_hw *hw = &vf->pf->hw;

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

        if (ice_is_vf_link_up(vf))
                ice_set_pfe_link(vf, &pfe,
                                 hw->port_info->phy.link_info.link_speed, true);
        else
                ice_set_pfe_link(vf, &pfe, ICE_AQ_LINK_SPEED_UNKNOWN, false);

        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_msix_per_vf - 1;

        /* clear VF MDD event information */
        memset(&vf->mdd_tx_events, 0, sizeof(vf->mdd_tx_events));
        memset(&vf->mdd_rx_events, 0, sizeof(vf->mdd_rx_events));

        /* 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;
        struct device *dev;
        int first, last, v;
        struct ice_hw *hw;

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

        dev = ice_pf_to_dev(pf);
        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_msix_per_vf - 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(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(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
 *
 * Since no MSIX entries are 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 */
        WARN_ON(pf->sriov_base_vector < res->num_entries);

        pf->sriov_base_vector = 0;

        return 0;
}

/**
 * ice_set_vf_state_qs_dis - Set VF queues state to disabled
 * @vf: pointer to the VF structure
 */
void ice_set_vf_state_qs_dis(struct ice_vf *vf)
{
        /* Clear Rx/Tx enabled queues flag */
        bitmap_zero(vf->txq_ena, ICE_MAX_RSS_QS_PER_VF);
        bitmap_zero(vf->rxq_ena, ICE_MAX_RSS_QS_PER_VF);
        clear_bit(ICE_VF_STATE_QS_ENA, vf->vf_states);
}

/**
 * ice_dis_vf_qs - Disable the VF queues
 * @vf: pointer to the VF structure
 */
static void ice_dis_vf_qs(struct ice_vf *vf)
{
        struct ice_pf *pf = vf->pf;
        struct ice_vsi *vsi;

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

        ice_vsi_stop_lan_tx_rings(vsi, ICE_NO_RESET, vf->vf_id);
        ice_vsi_stop_all_rx_rings(vsi);
        ice_set_vf_state_qs_dis(vf);
}

/**
 * ice_free_vfs - Free all VFs
 * @pf: pointer to the PF structure
 */
void ice_free_vfs(struct ice_pf *pf)
{
        struct device *dev = ice_pf_to_dev(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);

        /* 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(dev, "VFs are assigned - not disabling SR-IOV\n");

        /* Avoid wait time by stopping all VFs at the same time */
        ice_for_each_vf(pf, i)
                if (test_bit(ICE_VF_STATE_QS_ENA, pf->vf[i].vf_states))
                        ice_dis_vf_qs(&pf->vf[i]);

        tmp = pf->num_alloc_vfs;
        pf->num_qps_per_vf = 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 and set VF disable state */
                        ice_dis_vf_mappings(&pf->vf[i]);
                        set_bit(ICE_VF_STATE_DIS, pf->vf[i].vf_states);
                        ice_free_vf_res(&pf->vf[i]);
                }
        }

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

        devm_kfree(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
 * @is_pfr: true if the reset was triggered due to a previous PFR
 *
 * 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, bool is_pfr)
{
        struct ice_pf *pf = vf->pf;
        u32 reg, reg_idx, bit_idx;
        struct device *dev;
        struct ice_hw *hw;
        int vf_abs_id, i;

        dev = ice_pf_to_dev(pf);
        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);

        /* VF_MBX_ARQLEN is cleared by PFR, so the driver needs to clear it
         * in the case of VFR. If this is done for PFR, it can mess up VF
         * resets because the VF driver may already have started cleanup
         * by the time we get here.
         */
        if (!is_pfr)
                wr32(hw, VF_MBX_ARQLEN(vf->vf_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 < ICE_PCI_CIAD_WAIT_COUNT; i++) {
                reg = rd32(hw, PF_PCI_CIAD);
                /* no transactions pending so stop polling */
                if ((reg & VF_TRANS_PENDING_M) == 0)
                        break;

                dev_err(dev, "VF %d PCI transactions stuck\n", vf->vf_id);
                udelay(ICE_PCI_CIAD_WAIT_DELAY_US);
        }
}

/**
 * ice_vsi_manage_pvid - Enable or disable port VLAN for VSI
 * @vsi: the VSI to update
 * @pvid_info: VLAN ID and QoS used to set the PVID VSI context field
 * @enable: true for enable PVID false for disable
 */
static int ice_vsi_manage_pvid(struct ice_vsi *vsi, u16 pvid_info, bool enable)
{
        struct ice_hw *hw = &vsi->back->hw;
        struct ice_aqc_vsi_props *info;
        struct ice_vsi_ctx *ctxt;
        enum ice_status status;
        int ret = 0;

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

        ctxt->info = vsi->info;
        info = &ctxt->info;
        if (enable) {
                info->vlan_flags = ICE_AQ_VSI_VLAN_MODE_UNTAGGED |
                        ICE_AQ_VSI_PVLAN_INSERT_PVID |
                        ICE_AQ_VSI_VLAN_EMOD_STR;
                info->sw_flags2 |= ICE_AQ_VSI_SW_FLAG_RX_VLAN_PRUNE_ENA;
        } else {
                info->vlan_flags = ICE_AQ_VSI_VLAN_EMOD_NOTHING |
                        ICE_AQ_VSI_VLAN_MODE_ALL;
                info->sw_flags2 &= ~ICE_AQ_VSI_SW_FLAG_RX_VLAN_PRUNE_ENA;
        }

        info->pvid = cpu_to_le16(pvid_info);
        info->valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_VLAN_VALID |
                                           ICE_AQ_VSI_PROP_SW_VALID);

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

        vsi->info.vlan_flags = info->vlan_flags;
        vsi->info.sw_flags2 = info->sw_flags2;
        vsi->info.pvid = info->pvid;
out:
        kfree(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 MSIX vector index in the PF space
 * @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 PF space that is used by this VF.
 * This index is used when accessing PF relative registers such as
 * GLINT_VECT2FUNC and GLINT_DYN_CTL.
 * 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->sriov_base_vector + vf->vf_id * pf->num_msix_per_vf;
}

/**
 * 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;
        struct device *dev;
        int status = 0;

        dev = ice_pf_to_dev(pf);
        /* 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(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_info) {
                ice_vsi_manage_pvid(vsi, vf->port_vlan_info, true);
                if (ice_vsi_add_vlan(vsi, vf->port_vlan_info & VLAN_VID_MASK))
                        dev_warn(ice_pf_to_dev(pf), "Failed to add Port VLAN %d filter for VF %d\n",
                                 vf->port_vlan_info & VLAN_VID_MASK, vf->vf_id);
        } else {
                /* set VLAN 0 filter by default when no port VLAN is
                 * enabled. If a port VLAN is enabled we don't want
                 * untagged broadcast/multicast traffic seen on the VF
                 * interface.
                 */
                if (ice_vsi_add_vlan(vsi, 0))
                        dev_warn(ice_pf_to_dev(pf), "Failed to add VLAN 0 filter for VF %d, MDD events will trigger. Reset the VF, disable spoofchk, or enable 8021q module on the guest\n",
                                 vf->vf_id);
        }

        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(dev, "could not add mac filters error %d\n", status);
        else
                vf->num_mac = 1;

        /* 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.
         */
ice_alloc_vsi_res_exit:
        ice_free_fltr_list(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;

        /* Update number of VF queues, in case VF had requested for queue
         * changes
         */
        tx_rx_queue_left = min_t(int, ice_get_avail_txq_count(pf),
                                 ice_get_avail_rxq_count(pf));
        tx_rx_queue_left += pf->num_qps_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;

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

        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)
{
        int abs_vf_id, abs_first, abs_last;
        struct ice_pf *pf = vf->pf;
        struct ice_vsi *vsi;
        struct device *dev;
        int first, last, v;
        struct ice_hw *hw;
        u32 reg;

        dev = ice_pf_to_dev(pf);
        hw = &pf->hw;
        vsi = pf->vsi[vf->lan_vsi_idx];
        first = vf->first_vector_idx;
        last = (first + pf->num_msix_per_vf) - 1;
        abs_first = first + pf->hw.func_caps.common_cap.msix_vector_first_id;
        abs_last = (abs_first + pf->num_msix_per_vf) - 1;
        abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;

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

        reg = (((abs_first << VPINT_ALLOC_PCI_FIRST_S)
                 & VPINT_ALLOC_PCI_FIRST_M) |
               ((abs_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(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(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_msix_per_vf * 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 that the irq_tracker will not be affected. We
 * just set the pf->sriov_base_vector and return success.
 *
 * If there are not enough resources available, return an error. This should
 * always be caught by ice_set_per_vf_res().
 *
 * 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)
{
        u16 total_vectors = pf->hw.func_caps.common_cap.num_msix_vectors;
        int vectors_used = pf->irq_tracker->num_entries;
        int sriov_base_vector;

        sriov_base_vector = total_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 < vectors_used)
                return -EINVAL;

        pf->sriov_base_vector = sriov_base_vector;

        return 0;
}

/**
 * ice_set_per_vf_res - check if vectors and queues are available
 * @pf: pointer to the PF structure
 *
 * First, determine HW interrupts from common pool. If we allocate fewer VFs, we
 * get more vectors and can enable more queues per VF. Note that this does not
 * grab any vectors from the SW pool already allocated. Also note, that all
 * vector counts include one for each VF's miscellaneous interrupt vector
 * (i.e. OICR).
 *
 * Minimum VFs - 2 vectors, 1 queue pair
 * Small VFs - 5 vectors, 4 queue pairs
 * Medium VFs - 17 vectors, 16 queue pairs
 *
 * Second, determine number of queue pairs per VF by starting with a pre-defined
 * maximum each VF supports. If this is not possible, then we adjust based on
 * queue pairs available on the device.
 *
 * Lastly, set queue and MSI-X VF variables tracked by the PF so it can be used
 * by each VF during VF initialization and reset.
 */
static int ice_set_per_vf_res(struct ice_pf *pf)
{
        int max_valid_res_idx = ice_get_max_valid_res_idx(pf->irq_tracker);
        int msix_avail_per_vf, msix_avail_for_sriov;
        struct device *dev = ice_pf_to_dev(pf);
        u16 num_msix_per_vf, num_txq, num_rxq;

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

        /* determine MSI-X resources per VF */
        msix_avail_for_sriov = pf->hw.func_caps.common_cap.num_msix_vectors -
                pf->irq_tracker->num_entries;
        msix_avail_per_vf = msix_avail_for_sriov / pf->num_alloc_vfs;
        if (msix_avail_per_vf >= ICE_NUM_VF_MSIX_MED) {
                num_msix_per_vf = ICE_NUM_VF_MSIX_MED;
        } else if (msix_avail_per_vf >= ICE_NUM_VF_MSIX_SMALL) {
                num_msix_per_vf = ICE_NUM_VF_MSIX_SMALL;
        } else if (msix_avail_per_vf >= ICE_MIN_INTR_PER_VF) {
                num_msix_per_vf = ICE_MIN_INTR_PER_VF;
        } else {
                dev_err(dev, "Only %d MSI-X interrupts available for SR-IOV. Not enough to support minimum of %d MSI-X interrupts per VF for %d VFs\n",
                        msix_avail_for_sriov, ICE_MIN_INTR_PER_VF,
                        pf->num_alloc_vfs);
                return -EIO;
        }

        /* determine queue resources per VF */
        num_txq = ice_determine_res(pf, ice_get_avail_txq_count(pf),
                                    min_t(u16,
                                          num_msix_per_vf - ICE_NONQ_VECS_VF,
                                          ICE_MAX_RSS_QS_PER_VF),
                                    ICE_MIN_QS_PER_VF);

        num_rxq = ice_determine_res(pf, ice_get_avail_rxq_count(pf),
                                    min_t(u16,
                                          num_msix_per_vf - ICE_NONQ_VECS_VF,
                                          ICE_MAX_RSS_QS_PER_VF),
                                    ICE_MIN_QS_PER_VF);

        if (!num_txq || !num_rxq) {
                dev_err(dev, "Not enough queues to support minimum of %d queue pairs per VF for %d VFs\n",
                        ICE_MIN_QS_PER_VF, pf->num_alloc_vfs);
                return -EIO;
        }

        if (ice_sriov_set_msix_res(pf, num_msix_per_vf * pf->num_alloc_vfs)) {
                dev_err(dev, "Unable to set MSI-X resources for %d VFs\n",
                        pf->num_alloc_vfs);
                return -EINVAL;
        }

        /* only allow equal Tx/Rx queue count (i.e. queue pairs) */
        pf->num_qps_per_vf = min_t(int, num_txq, num_rxq);
        pf->num_msix_per_vf = num_msix_per_vf;
        dev_info(dev, "Enabling %d VFs with %d vectors and %d queues per VF\n",
                 pf->num_alloc_vfs, pf->num_msix_per_vf, pf->num_qps_per_vf);

        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);
        }

        /* 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 (vsi->num_vlan) {
                status = ice_set_vlan_vsi_promisc(hw, vsi->idx, promisc_m,
                                                  rm_promisc);
        } else if (vf->port_vlan_info) {
                if (rm_promisc)
                        status = ice_clear_vsi_promisc(hw, vsi->idx, promisc_m,
                                                       vf->port_vlan_info);
                else
                        status = ice_set_vsi_promisc(hw, vsi->idx, promisc_m,
                                                     vf->port_vlan_info);
        } 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_config_res_vfs - Finalize allocation of VFs resources in one go
 * @pf: pointer to the PF structure
 *
 * This function is being called as last part of resetting all VFs, or when
 * configuring VFs for the first time, where there is no resource to be freed
 * Returns true if resources were properly allocated for all VFs, and false
 * otherwise.
 */
static bool ice_config_res_vfs(struct ice_pf *pf)
{
        struct device *dev = ice_pf_to_dev(pf);
        struct ice_hw *hw = &pf->hw;
        int v;

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

        /* rearm global interrupts */
        if (test_and_clear_bit(__ICE_OICR_INTR_DIS, pf->state))
                ice_irq_dynamic_ena(hw, NULL, NULL);

        /* Finish resetting each VF and allocate resources */
        ice_for_each_vf(pf, v) {
                struct ice_vf *vf = &pf->vf[v];

                vf->num_vf_qs = pf->num_qps_per_vf;
                dev_dbg(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_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 device *dev = ice_pf_to_dev(pf);
        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 */
        ice_for_each_vf(pf, v)
                ice_trigger_vf_reset(&pf->vf[v], is_vflr, true);

        ice_for_each_vf(pf, v) {
                struct ice_vsi *vsi;

                vf = &pf->vf[v];
                vsi = pf->vsi[vf->lan_vsi_idx];
                if (test_bit(ICE_VF_STATE_QS_ENA, vf->vf_states))
                        ice_dis_vf_qs(vf);
                ice_dis_vsi_txq(vsi->port_info, vsi->idx, 0, 0, NULL, NULL,
                                NULL, ICE_VF_RESET, vf->vf_id, NULL);
        }

        /* 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++) {
                /* 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)) {
                                /* only delay if the check failed */
                                usleep_range(10, 20);
                                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(dev, "VF reset check timeout\n");

        /* free VF resources to begin resetting the VSI state */
        ice_for_each_vf(pf, 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(dev, "Failed to free MSIX resources used by SR-IOV\n");

        if (!ice_config_res_vfs(pf))
                return false;

        return true;
}

/**
 * ice_is_vf_disabled
 * @vf: pointer to the VF info
 *
 * Returns true if the PF or VF is disabled, false otherwise.
 */
static bool ice_is_vf_disabled(struct ice_vf *vf)
{
        struct ice_pf *pf = vf->pf;

        /* If the PF has been disabled, there is no need resetting VF until
         * PF is active again. Similarly, if the VF has been disabled, this
         * means something else is resetting the VF, so we shouldn't continue.
         * Otherwise, set disable VF state bit for actual reset, and continue.
         */
        return (test_bit(__ICE_VF_DIS, pf->state) ||
                test_bit(ICE_VF_STATE_DIS, vf->vf_states));
}

/**
 * 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 currently in reset, resets successfully, or resets
 * are disabled and false otherwise.
 */
bool ice_reset_vf(struct ice_vf *vf, bool is_vflr)
{
        struct ice_pf *pf = vf->pf;
        struct ice_vsi *vsi;
        struct device *dev;
        struct ice_hw *hw;
        bool rsd = false;
        u8 promisc_m;
        u32 reg;
        int i;

        dev = ice_pf_to_dev(pf);

        if (test_bit(__ICE_VF_RESETS_DISABLED, pf->state)) {
                dev_dbg(dev, "Trying to reset VF %d, but all VF resets are disabled\n",
                        vf->vf_id);
                return true;
        }

        if (ice_is_vf_disabled(vf)) {
                dev_dbg(dev, "VF is already disabled, there is no need for resetting it, telling VM, all is fine %d\n",
                        vf->vf_id);
                return true;
        }

        /* Set VF disable bit state here, before triggering reset */
        set_bit(ICE_VF_STATE_DIS, vf->vf_states);
        ice_trigger_vf_reset(vf, is_vflr, false);

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

        if (test_bit(ICE_VF_STATE_QS_ENA, vf->vf_states))
                ice_dis_vf_qs(vf);

        /* Call Disable LAN Tx queue AQ whether or not queues are
         * enabled. This is needed for successful completion 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.
                 */
                reg = rd32(hw, VPGEN_VFRSTAT(vf->vf_id));
                if (reg & VPGEN_VFRSTAT_VFRD_M) {
                        rsd = true;
                        break;
                }

                /* only sleep if the reset is not done */
                usleep_range(10, 20);
        }

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

        /* 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_info || vsi->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(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);

        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;

        ice_for_each_vf(pf, 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;
        struct ice_pf *pf;

        if (!vf)
                return;

        pf = vf->pf;
        if (ice_validate_vf_id(pf, vf->vf_id))
                return;

        /* Bail out if VF is in disabled state, neither initialized, nor active
         * state - otherwise proceed with notifications
         */
        if ((!test_bit(ICE_VF_STATE_INIT, vf->vf_states) &&
             !test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) ||
            test_bit(ICE_VF_STATE_DIS, vf->vf_states))
                return;

        pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
        pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
        ice_aq_send_msg_to_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 device *dev = ice_pf_to_dev(pf);
        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);
        set_bit(__ICE_OICR_INTR_DIS, pf->state);
        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(dev, num_alloc_vfs, sizeof(*vfs), GFP_KERNEL);
        if (!vfs) {
                ret = -ENOMEM;
                goto err_pci_disable_sriov;
        }
        pf->vf = vfs;
        pf->num_alloc_vfs = num_alloc_vfs;

        /* apply default profile */
        ice_for_each_vf(pf, 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;
        }

        /* VF resources get allocated with initialization */
        if (!ice_config_res_vfs(pf)) {
                ret = -EIO;
                goto err_unroll_sriov;
        }

        return ret;

err_unroll_sriov:
        pf->vf = NULL;
        devm_kfree(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);
        clear_bit(__ICE_OICR_INTR_DIS, pf->state);
        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 = ice_pf_to_dev(pf);
        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 -EOPNOTSUPP;
        }

        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 -EOPNOTSUPP;
        }

        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);
        struct device *dev = ice_pf_to_dev(pf);

        if (ice_is_safe_mode(pf)) {
                dev_err(dev, "SR-IOV cannot be configured - Device is in Safe Mode\n");
                return -EOPNOTSUPP;
        }

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

        if (!pci_vfs_assigned(pdev)) {
                ice_free_vfs(pf);
        } else {
                dev_err(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;

        ice_for_each_vf(pf, 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_reset_vf - Perform software reset on the VF after informing the AVF
 * @vf: pointer to the VF info
 */
static void ice_vc_reset_vf(struct ice_vf *vf)
{
        ice_vc_notify_vf_reset(vf);
        ice_reset_vf(vf, false);
}

/**
 * ice_get_vf_from_pfq - get the VF who owns the PF space queue passed in
 * @pf: PF used to index all VFs
 * @pfq: queue index relative to the PF's function space
 *
 * If no VF is found who owns the pfq then return NULL, otherwise return a
 * pointer to the VF who owns the pfq
 */
static struct ice_vf *ice_get_vf_from_pfq(struct ice_pf *pf, u16 pfq)
{
        int vf_id;

        ice_for_each_vf(pf, vf_id) {
                struct ice_vf *vf = &pf->vf[vf_id];
                struct ice_vsi *vsi;
                u16 rxq_idx;

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

                ice_for_each_rxq(vsi, rxq_idx)
                        if (vsi->rxq_map[rxq_idx] == pfq)
                                return vf;
        }

        return NULL;
}

/**
 * ice_globalq_to_pfq - convert from global queue index to PF space queue index
 * @pf: PF used for conversion
 * @globalq: global queue index used to convert to PF space queue index
 */
static u32 ice_globalq_to_pfq(struct ice_pf *pf, u32 globalq)
{
        return globalq - pf->hw.func_caps.common_cap.rxq_first_id;
}

/**
 * ice_vf_lan_overflow_event - handle LAN overflow event for a VF
 * @pf: PF that the LAN overflow event happened on
 * @event: structure holding the event information for the LAN overflow event
 *
 * Determine if the LAN overflow event was caused by a VF queue. If it was not
 * caused by a VF, do nothing. If a VF caused this LAN overflow event trigger a
 * reset on the offending VF.
 */
void
ice_vf_lan_overflow_event(struct ice_pf *pf, struct ice_rq_event_info *event)
{
        u32 gldcb_rtctq, queue;
        struct ice_vf *vf;

        gldcb_rtctq = le32_to_cpu(event->desc.params.lan_overflow.prtdcb_ruptq);
        dev_dbg(ice_pf_to_dev(pf), "GLDCB_RTCTQ: 0x%08x\n", gldcb_rtctq);

        /* event returns device global Rx queue number */
        queue = (gldcb_rtctq & GLDCB_RTCTQ_RXQNUM_M) >>
                GLDCB_RTCTQ_RXQNUM_S;

        vf = ice_get_vf_from_pfq(pf, ice_globalq_to_pfq(pf, queue));
        if (!vf)
                return;

        ice_vc_reset_vf(vf);
}

/**
 * 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 device *dev;
        struct ice_pf *pf;

        if (!vf)
                return -EINVAL;

        pf = vf->pf;
        if (ice_validate_vf_id(pf, vf->vf_id))
                return -EINVAL;

        dev = ice_pf_to_dev(pf);

        /* single place to detect unsuccessful return values */
        if (v_retval) {
                vf->num_inval_msgs++;
                dev_info(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(dev, "Number of invalid messages exceeded for VF %d\n",
                                vf->vf_id);
                        dev_err(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 && pf->hw.mailboxq.sq_last_status != ICE_AQ_RC_ENOSYS) {
                dev_info(dev, "Unable to send the message to VF %d ret %d aq_err %d\n",
                         vf->vf_id, aq_ret, 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 (ice_check_vf_init(pf, vf)) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto err;
        }

        len = sizeof(struct virtchnl_vf_resource);

        vfres = kzalloc(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_msix_per_vf;
        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);

        /* match guest capabilities */
        vf->driver_caps = vfres->vf_cap_flags;

        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);

        kfree(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_isvalid_ring_len
 * @ring_len: length of ring
 *
 * check for the valid ring count, should be multiple of ICE_REQ_DESC_MULTIPLE
 * or zero
 */
static bool ice_vc_isvalid_ring_len(u16 ring_len)
{
        return ring_len == 0 ||
               (ring_len >= ICE_MIN_NUM_DESC &&
                ring_len <= ICE_MAX_NUM_DESC &&
                !(ring_len % ICE_REQ_DESC_MULTIPLE));
}

/**
 * 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;

        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;
        }

        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;
        }

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

        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;
        }

        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;
        }

        vsi = pf->vsi[vf->lan_vsi_idx];
        if (!vsi) {
                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_wait_on_vf_reset - poll to make sure a given VF is ready after reset
 * @vf: The VF being resseting
 *
 * The max poll time is about ~800ms, which is about the maximum time it takes
 * for a VF to be reset and/or a VF driver to be removed.
 */
static void ice_wait_on_vf_reset(struct ice_vf *vf)
{
        int i;

        for (i = 0; i < ICE_MAX_VF_RESET_TRIES; i++) {
                if (test_bit(ICE_VF_STATE_INIT, vf->vf_states))
                        break;
                msleep(ICE_MAX_VF_RESET_SLEEP_MS);
        }
}

/**
 * ice_check_vf_ready_for_cfg - check if VF is ready to be configured/queried
 * @vf: VF to check if it's ready to be configured/queried
 *
 * The purpose of this function is to make sure the VF is not in reset, not
 * disabled, and initialized so it can be configured and/or queried by a host
 * administrator.
 */
static int ice_check_vf_ready_for_cfg(struct ice_vf *vf)
{
        struct ice_pf *pf;

        ice_wait_on_vf_reset(vf);

        if (ice_is_vf_disabled(vf))
                return -EINVAL;

        pf = vf->pf;
        if (ice_check_vf_init(pf, vf))
                return -EBUSY;

        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_pf *pf = np->vsi->back;
        struct ice_vsi_ctx *ctx;
        struct ice_vsi *vf_vsi;
        enum ice_status status;
        struct device *dev;
        struct ice_vf *vf;
        int ret;

        dev = ice_pf_to_dev(pf);
        if (ice_validate_vf_id(pf, vf_id))
                return -EINVAL;

        vf = &pf->vf[vf_id];
        ret = ice_check_vf_ready_for_cfg(vf);
        if (ret)
                return ret;

        vf_vsi = pf->vsi[vf->lan_vsi_idx];
        if (!vf_vsi) {
                netdev_err(netdev, "VSI %d for VF %d is null\n",
                           vf->lan_vsi_idx, vf->vf_id);
                return -EINVAL;
        }

        if (vf_vsi->type != ICE_VSI_VF) {
                netdev_err(netdev, "Type %d of VSI %d for VF %d is no ICE_VSI_VF\n",
                           vf_vsi->type, vf_vsi->vsi_num, vf->vf_id);
                return -ENODEV;
        }

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

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

        ctx->info.sec_flags = vf_vsi->info.sec_flags;
        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 |
                        (ICE_AQ_VSI_SEC_TX_VLAN_PRUNE_ENA <<
                         ICE_AQ_VSI_SEC_TX_PRUNE_ENA_S);
        } else {
                ctx->info.sec_flags &=
                        ~(ICE_AQ_VSI_SEC_FLAG_ENA_MAC_ANTI_SPOOF |
                          (ICE_AQ_VSI_SEC_TX_VLAN_PRUNE_ENA <<
                           ICE_AQ_VSI_SEC_TX_PRUNE_ENA_S));
        }

        status = ice_update_vsi(&pf->hw, vf_vsi->idx, ctx, NULL);
        if (status) {
                dev_err(dev, "Failed to %sable spoofchk on VF %d VSI %d\n error %d\n",
                        ena ? "en" : "dis", vf->vf_id, vf_vsi->vsi_num, status);
                ret = -EIO;
                goto out;
        }

        /* only update spoofchk state and VSI context on success */
        vf_vsi->info.sec_flags = ctx->info.sec_flags;
        vf->spoofchk = ena;

out:
        kfree(ctx);
        return ret;
}

/**
 * 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_eth_stats stats = { 0 };
        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;
        }

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

        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_validate_vqs_bitmaps - validate Rx/Tx queue bitmaps from VIRTCHNL
 * @vqs: virtchnl_queue_select structure containing bitmaps to validate
 *
 * Return true on successful validation, else false
 */
static bool ice_vc_validate_vqs_bitmaps(struct virtchnl_queue_select *vqs)
{
        if ((!vqs->rx_queues && !vqs->tx_queues) ||
            vqs->rx_queues >= BIT(ICE_MAX_RSS_QS_PER_VF) ||
            vqs->tx_queues >= BIT(ICE_MAX_RSS_QS_PER_VF))
                return false;

        return true;
}

/**
 * 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;
        unsigned long q_map;
        u16 vf_q_id;

        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 (!ice_vc_validate_vqs_bitmaps(vqs)) {
                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
         */
        q_map = vqs->rx_queues;
        for_each_set_bit(vf_q_id, &q_map, ICE_MAX_RSS_QS_PER_VF) {
                if (!ice_vc_isvalid_q_id(vf, vqs->vsi_id, vf_q_id)) {
                        v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                        goto error_param;
                }

                /* Skip queue if enabled */
                if (test_bit(vf_q_id, vf->rxq_ena))
                        continue;

                if (ice_vsi_ctrl_one_rx_ring(vsi, true, vf_q_id, true)) {
                        dev_err(ice_pf_to_dev(vsi->back), "Failed to enable Rx ring %d on VSI %d\n",
                                vf_q_id, vsi->vsi_num);
                        v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                        goto error_param;
                }

                set_bit(vf_q_id, vf->rxq_ena);
        }

        vsi = pf->vsi[vf->lan_vsi_idx];
        q_map = vqs->tx_queues;
        for_each_set_bit(vf_q_id, &q_map, ICE_MAX_RSS_QS_PER_VF) {
                if (!ice_vc_isvalid_q_id(vf, vqs->vsi_id, vf_q_id)) {
                        v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                        goto error_param;
                }

                /* Skip queue if enabled */
                if (test_bit(vf_q_id, vf->txq_ena))
                        continue;

                set_bit(vf_q_id, vf->txq_ena);
        }

        /* Set flag to indicate that queues are enabled */
        if (v_ret == VIRTCHNL_STATUS_SUCCESS)
                set_bit(ICE_VF_STATE_QS_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;
        unsigned long q_map;
        u16 vf_q_id;

        if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states) &&
            !test_bit(ICE_VF_STATE_QS_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 (!ice_vc_validate_vqs_bitmaps(vqs)) {
                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 (vqs->tx_queues) {
                q_map = vqs->tx_queues;

                for_each_set_bit(vf_q_id, &q_map, ICE_MAX_RSS_QS_PER_VF) {
                        struct ice_ring *ring = vsi->tx_rings[vf_q_id];
                        struct ice_txq_meta txq_meta = { 0 };

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

                        /* Skip queue if not enabled */
                        if (!test_bit(vf_q_id, vf->txq_ena))
                                continue;

                        ice_fill_txq_meta(vsi, ring, &txq_meta);

                        if (ice_vsi_stop_tx_ring(vsi, ICE_NO_RESET, vf->vf_id,
                                                 ring, &txq_meta)) {
                                dev_err(ice_pf_to_dev(vsi->back), "Failed to stop Tx ring %d on VSI %d\n",
                                        vf_q_id, vsi->vsi_num);
                                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                                goto error_param;
                        }

                        /* Clear enabled queues flag */
                        clear_bit(vf_q_id, vf->txq_ena);
                }
        }

        q_map = vqs->rx_queues;
        /* speed up Rx queue disable by batching them if possible */
        if (q_map &&
            bitmap_equal(&q_map, vf->rxq_ena, ICE_MAX_RSS_QS_PER_VF)) {
                if (ice_vsi_stop_all_rx_rings(vsi)) {
                        dev_err(ice_pf_to_dev(vsi->back), "Failed to stop all Rx rings on VSI %d\n",
                                vsi->vsi_num);
                        v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                        goto error_param;
                }

                bitmap_zero(vf->rxq_ena, ICE_MAX_RSS_QS_PER_VF);
        } else if (q_map) {
                for_each_set_bit(vf_q_id, &q_map, ICE_MAX_RSS_QS_PER_VF) {
                        if (!ice_vc_isvalid_q_id(vf, vqs->vsi_id, vf_q_id)) {
                                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                                goto error_param;
                        }

                        /* Skip queue if not enabled */
                        if (!test_bit(vf_q_id, vf->rxq_ena))
                                continue;

                        if (ice_vsi_ctrl_one_rx_ring(vsi, false, vf_q_id,
                                                     true)) {
                                dev_err(ice_pf_to_dev(vsi->back), "Failed to stop Rx ring %d on VSI %d\n",
                                        vf_q_id, vsi->vsi_num);
                                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                                goto error_param;
                        }

                        /* Clear enabled queues flag */
                        clear_bit(vf_q_id, vf->rxq_ena);
                }
        }

        /* Clear enabled queues flag */
        if (v_ret == VIRTCHNL_STATUS_SUCCESS && ice_vf_has_no_qs_ena(vf))
                clear_bit(ICE_VF_STATE_QS_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_cfg_interrupt
 * @vf: pointer to the VF info
 * @vsi: the VSI being configured
 * @vector_id: vector ID
 * @map: vector map for mapping vectors to queues
 * @q_vector: structure for interrupt vector
 * configure the IRQ to queue map
 */
static int
ice_cfg_interrupt(struct ice_vf *vf, struct ice_vsi *vsi, u16 vector_id,
                  struct virtchnl_vector_map *map,
                  struct ice_q_vector *q_vector)
{
        u16 vsi_q_id, vsi_q_id_idx;
        unsigned long qmap;

        q_vector->num_ring_rx = 0;
        q_vector->num_ring_tx = 0;

        qmap = map->rxq_map;
        for_each_set_bit(vsi_q_id_idx, &qmap, ICE_MAX_RSS_QS_PER_VF) {
                vsi_q_id = vsi_q_id_idx;

                if (!ice_vc_isvalid_q_id(vf, vsi->vsi_num, vsi_q_id))
                        return VIRTCHNL_STATUS_ERR_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;
        for_each_set_bit(vsi_q_id_idx, &qmap, ICE_MAX_RSS_QS_PER_VF) {
                vsi_q_id = vsi_q_id_idx;

                if (!ice_vc_isvalid_q_id(vf, vsi->vsi_num, vsi_q_id))
                        return VIRTCHNL_STATUS_ERR_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);
        }

        return VIRTCHNL_STATUS_SUCCESS;
}

/**
 * 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;
        u16 num_q_vectors_mapped, vsi_id, vector_id;
        struct virtchnl_irq_map_info *irqmap_info;
        struct virtchnl_vector_map *map;
        struct ice_pf *pf = vf->pf;
        struct ice_vsi *vsi;
        int i;

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

        /* 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_msix_per_vf < num_q_vectors_mapped ||
            !num_q_vectors_mapped) {
                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;
        }

        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;
                /* vector_id is always 0-based for each VF, and can never be
                 * larger than or equal to the max allowed interrupts per VF
                 */
                if (!(vector_id < pf->num_msix_per_vf) ||
                    !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 */
                v_ret = (enum virtchnl_status_code)
                        ice_cfg_interrupt(vf, vsi, vector_id, map, q_vector);
                if (v_ret)
                        goto error_param;
        }

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;
        u16 num_rxq = 0, num_txq = 0;
        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) {
                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                goto error_param;
        }

        if (qci->num_queue_pairs > ICE_MAX_RSS_QS_PER_VF ||
            qci->num_queue_pairs > min_t(u16, vsi->alloc_txq, vsi->alloc_rxq)) {
                dev_err(ice_pf_to_dev(pf), "VF-%d requesting more than supported number of queues: %d\n",
                        vf->vf_id, min_t(u16, vsi->alloc_txq, vsi->alloc_rxq));
                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 ||
                    qpi->txq.headwb_enabled ||
                    !ice_vc_isvalid_ring_len(qpi->txq.ring_len) ||
                    !ice_vc_isvalid_ring_len(qpi->rxq.ring_len) ||
                    !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 */
                if (qpi->txq.ring_len > 0) {
                        num_txq++;
                        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 */
                if (qpi->rxq.ring_len > 0) {
                        num_rxq++;
                        vsi->rx_rings[i]->dma = qpi->rxq.dma_ring_addr;
                        vsi->rx_rings[i]->count = qpi->rxq.ring_len;

                        if (qpi->rxq.databuffer_size != 0 &&
                            (qpi->rxq.databuffer_size > ((16 * 1024) - 128) ||
                             qpi->rxq.databuffer_size < 1024)) {
                                v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                                goto error_param;
                        }
                        vsi->rx_buf_len = qpi->rxq.databuffer_size;
                        vsi->rx_rings[i]->rx_buf_len = vsi->rx_buf_len;
                        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 = num_txq;
        vsi->num_rxq = num_rxq;
        /* All queues of VF VSI are in TC 0 */
        vsi->tc_cfg.tc_info[0].qcount_tx = num_txq;
        vsi->tc_cfg.tc_info[0].qcount_rx = num_rxq;

        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_add_mac_addr - attempt to add the MAC address passed in
 * @vf: pointer to the VF info
 * @vsi: pointer to the VF's VSI
 * @mac_addr: MAC address to add
 */
static int
ice_vc_add_mac_addr(struct ice_vf *vf, struct ice_vsi *vsi, u8 *mac_addr)
{
        struct device *dev = ice_pf_to_dev(vf->pf);
        enum ice_status status;

        /* default unicast MAC already added */
        if (ether_addr_equal(mac_addr, vf->dflt_lan_addr.addr))
                return 0;

        if (is_unicast_ether_addr(mac_addr) && !ice_can_vf_change_mac(vf)) {
                dev_err(dev, "VF attempting to override administratively set MAC address, bring down and up the VF interface to resume normal operation\n");
                return -EPERM;
        }

        status = ice_vsi_cfg_mac_fltr(vsi, mac_addr, true);
        if (status == ICE_ERR_ALREADY_EXISTS) {
                dev_err(dev, "MAC %pM already exists for VF %d\n", mac_addr,
                        vf->vf_id);
                return -EEXIST;
        } else if (status) {
                dev_err(dev, "Failed to add MAC %pM for VF %d\n, error %d\n",
                        mac_addr, vf->vf_id, status);
                return -EIO;
        }

        /* only set dflt_lan_addr once */
        if (is_zero_ether_addr(vf->dflt_lan_addr.addr) &&
            is_unicast_ether_addr(mac_addr))
                ether_addr_copy(vf->dflt_lan_addr.addr, mac_addr);

        vf->num_mac++;

        return 0;
}

/**
 * ice_vc_del_mac_addr - attempt to delete the MAC address passed in
 * @vf: pointer to the VF info
 * @vsi: pointer to the VF's VSI
 * @mac_addr: MAC address to delete
 */
static int
ice_vc_del_mac_addr(struct ice_vf *vf, struct ice_vsi *vsi, u8 *mac_addr)
{
        struct device *dev = ice_pf_to_dev(vf->pf);
        enum ice_status status;

        if (!ice_can_vf_change_mac(vf) &&
            ether_addr_equal(mac_addr, vf->dflt_lan_addr.addr))
                return 0;

        status = ice_vsi_cfg_mac_fltr(vsi, mac_addr, false);
        if (status == ICE_ERR_DOES_NOT_EXIST) {
                dev_err(dev, "MAC %pM does not exist for VF %d\n", mac_addr,
                        vf->vf_id);
                return -ENOENT;
        } else if (status) {
                dev_err(dev, "Failed to delete MAC %pM for VF %d, error %d\n",
                        mac_addr, vf->vf_id, status);
                return -EIO;
        }

        if (ether_addr_equal(mac_addr, vf->dflt_lan_addr.addr))
                eth_zero_addr(vf->dflt_lan_addr.addr);

        vf->num_mac--;

        return 0;
}

/**
 * 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)
{
        int (*ice_vc_cfg_mac)
                (struct ice_vf *vf, struct ice_vsi *vsi, u8 *mac_addr);
        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;
        struct ice_vsi *vsi;
        int i;

        if (set) {
                vc_op = VIRTCHNL_OP_ADD_ETH_ADDR;
                ice_vc_cfg_mac = ice_vc_add_mac_addr;
        } else {
                vc_op = VIRTCHNL_OP_DEL_ETH_ADDR;
                ice_vc_cfg_mac = ice_vc_del_mac_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 this VF is not privileged, then we can't add more than a
         * limited number of addresses. Check to make sure that the
         * additions do not push us over the limit.
         */
        if (set && !ice_is_vf_trusted(vf) &&
            (vf->num_mac + al->num_elements) > ICE_MAX_MACADDR_PER_VF) {
                dev_err(ice_pf_to_dev(pf), "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);
                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 *mac_addr = al->list[i].addr;
                int result;

                if (is_broadcast_ether_addr(mac_addr) ||
                    is_zero_ether_addr(mac_addr))
                        continue;

                result = ice_vc_cfg_mac(vf, vsi, mac_addr);
                if (result == -EEXIST || result == -ENOENT) {
                        continue;
                } else if (result) {
                        v_ret = VIRTCHNL_STATUS_ERR_ADMIN_QUEUE_ERROR;
                        goto handle_mac_exit;
                }
        }

handle_mac_exit:
        /* 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;
        u16 req_queues = vfres->num_queue_pairs;
        struct ice_pf *pf = vf->pf;
        u16 max_allowed_vf_queues;
        u16 tx_rx_queue_left;
        struct device *dev;
        u16 cur_queues;

        dev = ice_pf_to_dev(pf);
        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(u16, ice_get_avail_txq_count(pf),
                                 ice_get_avail_rxq_count(pf));
        max_allowed_vf_queues = tx_rx_queue_left + cur_queues;
        if (!req_queues) {
                dev_err(dev, "VF %d tried to request 0 queues. Ignoring.\n",
                        vf->vf_id);
        } else if (req_queues > ICE_MAX_RSS_QS_PER_VF) {
                dev_err(dev, "VF %d tried to request more than %d queues.\n",
                        vf->vf_id, ICE_MAX_RSS_QS_PER_VF);
                vfres->num_queue_pairs = ICE_MAX_RSS_QS_PER_VF;
        } else if (req_queues > cur_queues &&
                   req_queues - cur_queues > tx_rx_queue_left) {
                dev_warn(dev, "VF %d requested %u more queues, but only %u left.\n",
                         vf->vf_id, req_queues - cur_queues, tx_rx_queue_left);
                vfres->num_queue_pairs = min_t(u16, max_allowed_vf_queues,
                                               ICE_MAX_RSS_QS_PER_VF);
        } else {
                /* request is successful, then reset VF */
                vf->num_req_qs = req_queues;
                ice_vc_reset_vf(vf);
                dev_info(dev, "VF %d granted request of %u 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)
{
        struct ice_pf *pf = ice_netdev_to_pf(netdev);
        struct ice_vsi *vsi;
        struct device *dev;
        struct ice_vf *vf;
        u16 vlanprio;
        int ret;

        dev = ice_pf_to_dev(pf);
        if (ice_validate_vf_id(pf, vf_id))
                return -EINVAL;

        if (vlan_id >= VLAN_N_VID || qos > 7) {
                dev_err(dev, "Invalid Port VLAN parameters for VF %d, ID %d, QoS %d\n",
                        vf_id, vlan_id, qos);
                return -EINVAL;
        }

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

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

        ret = ice_check_vf_ready_for_cfg(vf);
        if (ret)
                return ret;

        vlanprio = vlan_id | (qos << VLAN_PRIO_SHIFT);

        if (vf->port_vlan_info == vlanprio) {
                /* duplicate request, so just return success */
                dev_dbg(dev, "Duplicate pvid %d request\n", vlanprio);
                return 0;
        }

        if (vlan_id || qos) {
                /* remove VLAN 0 filter set by default when transitioning from
                 * no port VLAN to a port VLAN. No change to old port VLAN on
                 * failure.
                 */
                ret = ice_vsi_kill_vlan(vsi, 0);
                if (ret)
                        return ret;
                ret = ice_vsi_manage_pvid(vsi, vlanprio, true);
                if (ret)
                        return ret;
        } else {
                /* add VLAN 0 filter back when transitioning from port VLAN to
                 * no port VLAN. No change to old port VLAN on failure.
                 */
                ret = ice_vsi_add_vlan(vsi, 0);
                if (ret)
                        return ret;
                ret = ice_vsi_manage_pvid(vsi, 0, false);
                if (ret)
                        return ret;
        }

        if (vlan_id) {
                dev_info(dev, "Setting VLAN %d, QoS 0x%x on VF %d\n",
                         vlan_id, qos, vf_id);

                /* add VLAN filter for the port VLAN */
                ret = ice_vsi_add_vlan(vsi, vlan_id);
                if (ret)
                        return ret;
        }
        /* remove old port VLAN filter with valid VLAN ID or QoS fields */
        if (vf->port_vlan_info)
                ice_vsi_kill_vlan(vsi, vf->port_vlan_info & VLAN_VID_MASK);

        /* keep port VLAN information persistent on resets */
        vf->port_vlan_info = le16_to_cpu(vsi->info.pvid);

        return 0;
}

/**
 * ice_vf_vlan_offload_ena - determine if capabilities support VLAN offloads
 * @caps: VF driver negotiated capabilities
 *
 * Return true if VIRTCHNL_VF_OFFLOAD_VLAN capability is set, else return false
 */
static bool ice_vf_vlan_offload_ena(u32 caps)
{
        return !!(caps & VIRTCHNL_VF_OFFLOAD_VLAN);
}

/**
 * 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 device *dev;
        struct ice_hw *hw;
        int status = 0;
        u8 promisc_m;
        int i;

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

        if (!ice_vf_vlan_offload_ena(vf->driver_caps)) {
                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;
        }

        for (i = 0; i < vfl->num_elements; i++) {
                if (vfl->vlan_id[i] >= VLAN_N_VID) {
                        v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                        dev_err(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 (add_v && !ice_is_vf_trusted(vf) &&
            vsi->num_vlan >= ICE_MAX_VLAN_PER_VF) {
                dev_info(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;
        }

        if (vsi->info.pvid) {
                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) &&
                            vsi->num_vlan >= ICE_MAX_VLAN_PER_VF) {
                                dev_info(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;
                        }

                        /* we add VLAN 0 by default for each VF so we can enable
                         * Tx VLAN anti-spoof without triggering MDD events so
                         * we don't need to add it again here
                         */
                        if (!vid)
                                continue;

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

                        /* Enable VLAN pruning when non-zero VLAN is added */
                        if (!vlan_promisc && vid &&
                            !ice_vsi_is_vlan_pruning_ena(vsi)) {
                                status = ice_cfg_vlan_pruning(vsi, true, false);
                                if (status) {
                                        v_ret = VIRTCHNL_STATUS_ERR_PARAM;
                                        dev_err(dev, "Enable VLAN pruning on VLAN ID: %d failed error-%d\n",
                                                vid, status);
                                        goto error_param;
                                }
                        } else if (vlan_promisc) {
                                /* 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(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 = vsi->num_vlan;
                for (i = 0; i < vfl->num_elements && i < num_vf_vlan; i++) {
                        u16 vid = vfl->vlan_id[i];

                        /* we add VLAN 0 by default for each VF so we can enable
                         * Tx VLAN anti-spoof without triggering MDD events so
                         * we don't want a VIRTCHNL request to remove it
                         */
                        if (!vid)
                                continue;

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

                        /* Disable VLAN pruning when only VLAN 0 is left */
                        if (vsi->num_vlan == 1 &&
                            ice_vsi_is_vlan_pruning_ena(vsi))
                                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;
        }

        if (!ice_vf_vlan_offload_ena(vf->driver_caps)) {
                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;
        }

        if (!ice_vf_vlan_offload_ena(vf->driver_caps)) {
                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_vf_init_vlan_stripping - enable/disable VLAN stripping on initialization
 * @vf: VF to enable/disable VLAN stripping for on initialization
 *
 * If the VIRTCHNL_VF_OFFLOAD_VLAN flag is set enable VLAN stripping, else if
 * the flag is cleared then we want to disable stripping. For example, the flag
 * will be cleared when port VLANs are configured by the administrator before
 * passing the VF to the guest or if the AVF driver doesn't support VLAN
 * offloads.
 */
static int ice_vf_init_vlan_stripping(struct ice_vf *vf)
{
        struct ice_vsi *vsi = vf->pf->vsi[vf->lan_vsi_idx];

        if (!vsi)
                return -EINVAL;

        /* don't modify stripping if port VLAN is configured */
        if (vsi->info.pvid)
                return 0;

        if (ice_vf_vlan_offload_ena(vf->driver_caps))
                return ice_vsi_manage_vlan_stripping(vsi, true);
        else
                return ice_vsi_manage_vlan_stripping(vsi, false);
}

/**
 * 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;
        struct device *dev;
        int err = 0;

        dev = ice_pf_to_dev(pf);
        if (ice_validate_vf_id(pf, vf_id)) {
                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;
        }

error_handler:
        if (err) {
                ice_vc_send_msg_to_vf(vf, v_opcode, VIRTCHNL_STATUS_ERR_PARAM,
                                      NULL, 0);
                dev_err(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);
                if (ice_vf_init_vlan_stripping(vf))
                        dev_err(dev, "Failed to initialize VLAN stripping for VF %d\n",
                                vf->vf_id);
                ice_vc_notify_vf_link_state(vf);
                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(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(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_pf *pf = ice_netdev_to_pf(netdev);
        struct ice_vf *vf;

        if (ice_validate_vf_id(pf, vf_id))
                return -EINVAL;

        vf = &pf->vf[vf_id];

        if (ice_check_vf_init(pf, vf))
                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 = vf->port_vlan_info & VLAN_VID_MASK;
        ivi->qos = (vf->port_vlan_info & VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT;

        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_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_pf *pf = ice_netdev_to_pf(netdev);
        struct ice_vf *vf;
        int ret;

        if (ice_validate_vf_id(pf, vf_id))
                return -EINVAL;

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

        vf = &pf->vf[vf_id];
        ret = ice_check_vf_ready_for_cfg(vf);
        if (ret)
                return ret;

        /* 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_reset_vf(vf);
        return 0;
}

/**
 * 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
 */
int ice_set_vf_trust(struct net_device *netdev, int vf_id, bool trusted)
{
        struct ice_pf *pf = ice_netdev_to_pf(netdev);
        struct ice_vf *vf;
        int ret;

        if (ice_validate_vf_id(pf, vf_id))
                return -EINVAL;

        vf = &pf->vf[vf_id];
        ret = ice_check_vf_ready_for_cfg(vf);
        if (ret)
                return ret;

        /* Check if already trusted */
        if (trusted == vf->trusted)
                return 0;

        vf->trusted = trusted;
        ice_vc_reset_vf(vf);
        dev_info(ice_pf_to_dev(pf), "VF %u is now %strusted\n",
                 vf_id, trusted ? "" : "un");

        return 0;
}

/**
 * ice_set_vf_link_state
 * @netdev: network interface device structure
 * @vf_id: VF identifier
 * @link_state: required link state
 *
 * Set VF's link state, irrespective of physical link state status
 */
int ice_set_vf_link_state(struct net_device *netdev, int vf_id, int link_state)
{
        struct ice_pf *pf = ice_netdev_to_pf(netdev);
        struct ice_vf *vf;
        int ret;

        if (ice_validate_vf_id(pf, vf_id))
                return -EINVAL;

        vf = &pf->vf[vf_id];
        ret = ice_check_vf_ready_for_cfg(vf);
        if (ret)
                return ret;

        switch (link_state) {
        case IFLA_VF_LINK_STATE_AUTO:
                vf->link_forced = false;
                break;
        case IFLA_VF_LINK_STATE_ENABLE:
                vf->link_forced = true;
                vf->link_up = true;
                break;
        case IFLA_VF_LINK_STATE_DISABLE:
                vf->link_forced = true;
                vf->link_up = false;
                break;
        default:
                return -EINVAL;
        }

        ice_vc_notify_vf_link_state(vf);

        return 0;
}

/**
 * ice_get_vf_stats - populate some stats for the VF
 * @netdev: the netdev of the PF
 * @vf_id: the host OS identifier (0-255)
 * @vf_stats: pointer to the OS memory to be initialized
 */
int ice_get_vf_stats(struct net_device *netdev, int vf_id,
                     struct ifla_vf_stats *vf_stats)
{
        struct ice_pf *pf = ice_netdev_to_pf(netdev);
        struct ice_eth_stats *stats;
        struct ice_vsi *vsi;
        struct ice_vf *vf;
        int ret;

        if (ice_validate_vf_id(pf, vf_id))
                return -EINVAL;

        vf = &pf->vf[vf_id];
        ret = ice_check_vf_ready_for_cfg(vf);
        if (ret)
                return ret;

        vsi = pf->vsi[vf->lan_vsi_idx];
        if (!vsi)
                return -EINVAL;

        ice_update_eth_stats(vsi);
        stats = &vsi->eth_stats;

        memset(vf_stats, 0, sizeof(*vf_stats));

        vf_stats->rx_packets = stats->rx_unicast + stats->rx_broadcast +
                stats->rx_multicast;
        vf_stats->tx_packets = stats->tx_unicast + stats->tx_broadcast +
                stats->tx_multicast;
        vf_stats->rx_bytes   = stats->rx_bytes;
        vf_stats->tx_bytes   = stats->tx_bytes;
        vf_stats->broadcast  = stats->rx_broadcast;
        vf_stats->multicast  = stats->rx_multicast;
        vf_stats->rx_dropped = stats->rx_discards;
        vf_stats->tx_dropped = stats->tx_discards;

        return 0;
}

/**
 * ice_print_vfs_mdd_event - print VFs malicious driver detect event
 * @pf: pointer to the PF structure
 *
 * Called from ice_handle_mdd_event to rate limit and print VFs MDD events.
 */
void ice_print_vfs_mdd_events(struct ice_pf *pf)
{
        struct device *dev = ice_pf_to_dev(pf);
        struct ice_hw *hw = &pf->hw;
        int i;

        /* check that there are pending MDD events to print */
        if (!test_and_clear_bit(__ICE_MDD_VF_PRINT_PENDING, pf->state))
                return;

        /* VF MDD event logs are rate limited to one second intervals */
        if (time_is_after_jiffies(pf->last_printed_mdd_jiffies + HZ * 1))
                return;

        pf->last_printed_mdd_jiffies = jiffies;

        ice_for_each_vf(pf, i) {
                struct ice_vf *vf = &pf->vf[i];

                /* only print Rx MDD event message if there are new events */
                if (vf->mdd_rx_events.count != vf->mdd_rx_events.last_printed) {
                        vf->mdd_rx_events.last_printed =
                                                        vf->mdd_rx_events.count;

                        dev_info(dev, "%d Rx Malicious Driver Detection events detected on PF %d VF %d MAC %pM. mdd-auto-reset-vfs=%s\n",
                                 vf->mdd_rx_events.count, hw->pf_id, i,
                                 vf->dflt_lan_addr.addr,
                                 test_bit(ICE_FLAG_MDD_AUTO_RESET_VF, pf->flags)
                                          ? "on" : "off");
                }

                /* only print Tx MDD event message if there are new events */
                if (vf->mdd_tx_events.count != vf->mdd_tx_events.last_printed) {
                        vf->mdd_tx_events.last_printed =
                                                        vf->mdd_tx_events.count;

                        dev_info(dev, "%d Tx Malicious Driver Detection events detected on PF %d VF %d MAC %pM.\n",
                                 vf->mdd_tx_events.count, hw->pf_id, i,
                                 vf->dflt_lan_addr.addr);
                }
        }
}