// SPDX-License-Identifier: GPL-2.0
/* Copyright(c) 2013 - 2018 Intel Corporation. */

#include "iavf.h"
#include "iavf_prototype.h"
#include "iavf_client.h"

/* busy wait delay in msec */
#define IAVF_BUSY_WAIT_DELAY 10
#define IAVF_BUSY_WAIT_COUNT 50

/**
 * iavf_send_pf_msg
 * @adapter: adapter structure
 * @op: virtual channel opcode
 * @msg: pointer to message buffer
 * @len: message length
 *
 * Send message to PF and print status if failure.
 **/
static int iavf_send_pf_msg(struct iavf_adapter *adapter,
                            enum virtchnl_ops op, u8 *msg, u16 len)
{
        struct iavf_hw *hw = &adapter->hw;
        enum iavf_status err;

        if (adapter->flags & IAVF_FLAG_PF_COMMS_FAILED)
                return 0; /* nothing to see here, move along */

        err = iavf_aq_send_msg_to_pf(hw, op, 0, msg, len, NULL);
        if (err)
                dev_dbg(&adapter->pdev->dev, "Unable to send opcode %d to PF, err %s, aq_err %s\n",
                        op, iavf_stat_str(hw, err),
                        iavf_aq_str(hw, hw->aq.asq_last_status));
        return err;
}

/**
 * iavf_send_api_ver
 * @adapter: adapter structure
 *
 * Send API version admin queue message to the PF. The reply is not checked
 * in this function. Returns 0 if the message was successfully
 * sent, or one of the IAVF_ADMIN_QUEUE_ERROR_ statuses if not.
 **/
int iavf_send_api_ver(struct iavf_adapter *adapter)
{
        struct virtchnl_version_info vvi;

        vvi.major = VIRTCHNL_VERSION_MAJOR;
        vvi.minor = VIRTCHNL_VERSION_MINOR;

        return iavf_send_pf_msg(adapter, VIRTCHNL_OP_VERSION, (u8 *)&vvi,
                                sizeof(vvi));
}

/**
 * iavf_verify_api_ver
 * @adapter: adapter structure
 *
 * Compare API versions with the PF. Must be called after admin queue is
 * initialized. Returns 0 if API versions match, -EIO if they do not,
 * IAVF_ERR_ADMIN_QUEUE_NO_WORK if the admin queue is empty, and any errors
 * from the firmware are propagated.
 **/
int iavf_verify_api_ver(struct iavf_adapter *adapter)
{
        struct virtchnl_version_info *pf_vvi;
        struct iavf_hw *hw = &adapter->hw;
        struct iavf_arq_event_info event;
        enum virtchnl_ops op;
        enum iavf_status err;

        event.buf_len = IAVF_MAX_AQ_BUF_SIZE;
        event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
        if (!event.msg_buf) {
                err = -ENOMEM;
                goto out;
        }

        while (1) {
                err = iavf_clean_arq_element(hw, &event, NULL);
                /* When the AQ is empty, iavf_clean_arq_element will return
                 * nonzero and this loop will terminate.
                 */
                if (err)
                        goto out_alloc;
                op =
                    (enum virtchnl_ops)le32_to_cpu(event.desc.cookie_high);
                if (op == VIRTCHNL_OP_VERSION)
                        break;
        }


        err = (enum iavf_status)le32_to_cpu(event.desc.cookie_low);
        if (err)
                goto out_alloc;

        if (op != VIRTCHNL_OP_VERSION) {
                dev_info(&adapter->pdev->dev, "Invalid reply type %d from PF\n",
                        op);
                err = -EIO;
                goto out_alloc;
        }

        pf_vvi = (struct virtchnl_version_info *)event.msg_buf;
        adapter->pf_version = *pf_vvi;

        if ((pf_vvi->major > VIRTCHNL_VERSION_MAJOR) ||
            ((pf_vvi->major == VIRTCHNL_VERSION_MAJOR) &&
             (pf_vvi->minor > VIRTCHNL_VERSION_MINOR)))
                err = -EIO;

out_alloc:
        kfree(event.msg_buf);
out:
        return err;
}

/**
 * iavf_send_vf_config_msg
 * @adapter: adapter structure
 *
 * Send VF configuration request admin queue message to the PF. The reply
 * is not checked in this function. Returns 0 if the message was
 * successfully sent, or one of the IAVF_ADMIN_QUEUE_ERROR_ statuses if not.
 **/
int iavf_send_vf_config_msg(struct iavf_adapter *adapter)
{
        u32 caps;

        caps = VIRTCHNL_VF_OFFLOAD_L2 |
               VIRTCHNL_VF_OFFLOAD_RSS_PF |
               VIRTCHNL_VF_OFFLOAD_RSS_AQ |
               VIRTCHNL_VF_OFFLOAD_RSS_REG |
               VIRTCHNL_VF_OFFLOAD_VLAN |
               VIRTCHNL_VF_OFFLOAD_WB_ON_ITR |
               VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2 |
               VIRTCHNL_VF_OFFLOAD_ENCAP |
               VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM |
               VIRTCHNL_VF_OFFLOAD_REQ_QUEUES |
               VIRTCHNL_VF_OFFLOAD_ADQ |
               VIRTCHNL_VF_OFFLOAD_USO |
               VIRTCHNL_VF_OFFLOAD_FDIR_PF |
               VIRTCHNL_VF_OFFLOAD_ADV_RSS_PF |
               VIRTCHNL_VF_CAP_ADV_LINK_SPEED;

        adapter->current_op = VIRTCHNL_OP_GET_VF_RESOURCES;
        adapter->aq_required &= ~IAVF_FLAG_AQ_GET_CONFIG;
        if (PF_IS_V11(adapter))
                return iavf_send_pf_msg(adapter, VIRTCHNL_OP_GET_VF_RESOURCES,
                                        (u8 *)&caps, sizeof(caps));
        else
                return iavf_send_pf_msg(adapter, VIRTCHNL_OP_GET_VF_RESOURCES,
                                        NULL, 0);
}

/**
 * iavf_validate_num_queues
 * @adapter: adapter structure
 *
 * Validate that the number of queues the PF has sent in
 * VIRTCHNL_OP_GET_VF_RESOURCES is not larger than the VF can handle.
 **/
static void iavf_validate_num_queues(struct iavf_adapter *adapter)
{
        if (adapter->vf_res->num_queue_pairs > IAVF_MAX_REQ_QUEUES) {
                struct virtchnl_vsi_resource *vsi_res;
                int i;

                dev_info(&adapter->pdev->dev, "Received %d queues, but can only have a max of %d\n",
                         adapter->vf_res->num_queue_pairs,
                         IAVF_MAX_REQ_QUEUES);
                dev_info(&adapter->pdev->dev, "Fixing by reducing queues to %d\n",
                         IAVF_MAX_REQ_QUEUES);
                adapter->vf_res->num_queue_pairs = IAVF_MAX_REQ_QUEUES;
                for (i = 0; i < adapter->vf_res->num_vsis; i++) {
                        vsi_res = &adapter->vf_res->vsi_res[i];
                        vsi_res->num_queue_pairs = IAVF_MAX_REQ_QUEUES;
                }
        }
}

/**
 * iavf_get_vf_config
 * @adapter: private adapter structure
 *
 * Get VF configuration from PF and populate hw structure. Must be called after
 * admin queue is initialized. Busy waits until response is received from PF,
 * with maximum timeout. Response from PF is returned in the buffer for further
 * processing by the caller.
 **/
int iavf_get_vf_config(struct iavf_adapter *adapter)
{
        struct iavf_hw *hw = &adapter->hw;
        struct iavf_arq_event_info event;
        enum virtchnl_ops op;
        enum iavf_status err;
        u16 len;

        len =  sizeof(struct virtchnl_vf_resource) +
                IAVF_MAX_VF_VSI * sizeof(struct virtchnl_vsi_resource);
        event.buf_len = len;
        event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
        if (!event.msg_buf) {
                err = -ENOMEM;
                goto out;
        }

        while (1) {
                /* When the AQ is empty, iavf_clean_arq_element will return
                 * nonzero and this loop will terminate.
                 */
                err = iavf_clean_arq_element(hw, &event, NULL);
                if (err)
                        goto out_alloc;
                op =
                    (enum virtchnl_ops)le32_to_cpu(event.desc.cookie_high);
                if (op == VIRTCHNL_OP_GET_VF_RESOURCES)
                        break;
        }

        err = (enum iavf_status)le32_to_cpu(event.desc.cookie_low);
        memcpy(adapter->vf_res, event.msg_buf, min(event.msg_len, len));

        /* some PFs send more queues than we should have so validate that
         * we aren't getting too many queues
         */
        if (!err)
                iavf_validate_num_queues(adapter);
        iavf_vf_parse_hw_config(hw, adapter->vf_res);
out_alloc:
        kfree(event.msg_buf);
out:
        return err;
}

/**
 * iavf_configure_queues
 * @adapter: adapter structure
 *
 * Request that the PF set up our (previously allocated) queues.
 **/
void iavf_configure_queues(struct iavf_adapter *adapter)
{
        struct virtchnl_vsi_queue_config_info *vqci;
        struct virtchnl_queue_pair_info *vqpi;
        int pairs = adapter->num_active_queues;
        int i, max_frame = IAVF_MAX_RXBUFFER;
        size_t len;

        if (adapter->current_op != VIRTCHNL_OP_UNKNOWN) {
                /* bail because we already have a command pending */
                dev_err(&adapter->pdev->dev, "Cannot configure queues, command %d pending\n",
                        adapter->current_op);
                return;
        }
        adapter->current_op = VIRTCHNL_OP_CONFIG_VSI_QUEUES;
        len = struct_size(vqci, qpair, pairs);
        vqci = kzalloc(len, GFP_KERNEL);
        if (!vqci)
                return;

        /* Limit maximum frame size when jumbo frames is not enabled */
        if (!(adapter->flags & IAVF_FLAG_LEGACY_RX) &&
            (adapter->netdev->mtu <= ETH_DATA_LEN))
                max_frame = IAVF_RXBUFFER_1536 - NET_IP_ALIGN;

        vqci->vsi_id = adapter->vsi_res->vsi_id;
        vqci->num_queue_pairs = pairs;
        vqpi = vqci->qpair;
        /* Size check is not needed here - HW max is 16 queue pairs, and we
         * can fit info for 31 of them into the AQ buffer before it overflows.
         */
        for (i = 0; i < pairs; i++) {
                vqpi->txq.vsi_id = vqci->vsi_id;
                vqpi->txq.queue_id = i;
                vqpi->txq.ring_len = adapter->tx_rings[i].count;
                vqpi->txq.dma_ring_addr = adapter->tx_rings[i].dma;
                vqpi->rxq.vsi_id = vqci->vsi_id;
                vqpi->rxq.queue_id = i;
                vqpi->rxq.ring_len = adapter->rx_rings[i].count;
                vqpi->rxq.dma_ring_addr = adapter->rx_rings[i].dma;
                vqpi->rxq.max_pkt_size = max_frame;
                vqpi->rxq.databuffer_size =
                        ALIGN(adapter->rx_rings[i].rx_buf_len,
                              BIT_ULL(IAVF_RXQ_CTX_DBUFF_SHIFT));
                vqpi++;
        }

        adapter->aq_required &= ~IAVF_FLAG_AQ_CONFIGURE_QUEUES;
        iavf_send_pf_msg(adapter, VIRTCHNL_OP_CONFIG_VSI_QUEUES,
                         (u8 *)vqci, len);
        kfree(vqci);
}

/**
 * iavf_enable_queues
 * @adapter: adapter structure
 *
 * Request that the PF enable all of our queues.
 **/
void iavf_enable_queues(struct iavf_adapter *adapter)
{
        struct virtchnl_queue_select vqs;

        if (adapter->current_op != VIRTCHNL_OP_UNKNOWN) {
                /* bail because we already have a command pending */
                dev_err(&adapter->pdev->dev, "Cannot enable queues, command %d pending\n",
                        adapter->current_op);
                return;
        }
        adapter->current_op = VIRTCHNL_OP_ENABLE_QUEUES;
        vqs.vsi_id = adapter->vsi_res->vsi_id;
        vqs.tx_queues = BIT(adapter->num_active_queues) - 1;
        vqs.rx_queues = vqs.tx_queues;
        adapter->aq_required &= ~IAVF_FLAG_AQ_ENABLE_QUEUES;
        iavf_send_pf_msg(adapter, VIRTCHNL_OP_ENABLE_QUEUES,
                         (u8 *)&vqs, sizeof(vqs));
}

/**
 * iavf_disable_queues
 * @adapter: adapter structure
 *
 * Request that the PF disable all of our queues.
 **/
void iavf_disable_queues(struct iavf_adapter *adapter)
{
        struct virtchnl_queue_select vqs;

        if (adapter->current_op != VIRTCHNL_OP_UNKNOWN) {
                /* bail because we already have a command pending */
                dev_err(&adapter->pdev->dev, "Cannot disable queues, command %d pending\n",
                        adapter->current_op);
                return;
        }
        adapter->current_op = VIRTCHNL_OP_DISABLE_QUEUES;
        vqs.vsi_id = adapter->vsi_res->vsi_id;
        vqs.tx_queues = BIT(adapter->num_active_queues) - 1;
        vqs.rx_queues = vqs.tx_queues;
        adapter->aq_required &= ~IAVF_FLAG_AQ_DISABLE_QUEUES;
        iavf_send_pf_msg(adapter, VIRTCHNL_OP_DISABLE_QUEUES,
                         (u8 *)&vqs, sizeof(vqs));
}

/**
 * iavf_map_queues
 * @adapter: adapter structure
 *
 * Request that the PF map queues to interrupt vectors. Misc causes, including
 * admin queue, are always mapped to vector 0.
 **/
void iavf_map_queues(struct iavf_adapter *adapter)
{
        struct virtchnl_irq_map_info *vimi;
        struct virtchnl_vector_map *vecmap;
        struct iavf_q_vector *q_vector;
        int v_idx, q_vectors;
        size_t len;

        if (adapter->current_op != VIRTCHNL_OP_UNKNOWN) {
                /* bail because we already have a command pending */
                dev_err(&adapter->pdev->dev, "Cannot map queues to vectors, command %d pending\n",
                        adapter->current_op);
                return;
        }
        adapter->current_op = VIRTCHNL_OP_CONFIG_IRQ_MAP;

        q_vectors = adapter->num_msix_vectors - NONQ_VECS;

        len = struct_size(vimi, vecmap, adapter->num_msix_vectors);
        vimi = kzalloc(len, GFP_KERNEL);
        if (!vimi)
                return;

        vimi->num_vectors = adapter->num_msix_vectors;
        /* Queue vectors first */
        for (v_idx = 0; v_idx < q_vectors; v_idx++) {
                q_vector = &adapter->q_vectors[v_idx];
                vecmap = &vimi->vecmap[v_idx];

                vecmap->vsi_id = adapter->vsi_res->vsi_id;
                vecmap->vector_id = v_idx + NONQ_VECS;
                vecmap->txq_map = q_vector->ring_mask;
                vecmap->rxq_map = q_vector->ring_mask;
                vecmap->rxitr_idx = IAVF_RX_ITR;
                vecmap->txitr_idx = IAVF_TX_ITR;
        }
        /* Misc vector last - this is only for AdminQ messages */
        vecmap = &vimi->vecmap[v_idx];
        vecmap->vsi_id = adapter->vsi_res->vsi_id;
        vecmap->vector_id = 0;
        vecmap->txq_map = 0;
        vecmap->rxq_map = 0;

        adapter->aq_required &= ~IAVF_FLAG_AQ_MAP_VECTORS;
        iavf_send_pf_msg(adapter, VIRTCHNL_OP_CONFIG_IRQ_MAP,
                         (u8 *)vimi, len);
        kfree(vimi);
}

/**
 * iavf_add_ether_addrs
 * @adapter: adapter structure
 *
 * Request that the PF add one or more addresses to our filters.
 **/
void iavf_add_ether_addrs(struct iavf_adapter *adapter)
{
        struct virtchnl_ether_addr_list *veal;
        struct iavf_mac_filter *f;
        int i = 0, count = 0;
        bool more = false;
        size_t len;

        if (adapter->current_op != VIRTCHNL_OP_UNKNOWN) {
                /* bail because we already have a command pending */
                dev_err(&adapter->pdev->dev, "Cannot add filters, command %d pending\n",
                        adapter->current_op);
                return;
        }

        spin_lock_bh(&adapter->mac_vlan_list_lock);

        list_for_each_entry(f, &adapter->mac_filter_list, list) {
                if (f->add)
                        count++;
        }
        if (!count) {
                adapter->aq_required &= ~IAVF_FLAG_AQ_ADD_MAC_FILTER;
                spin_unlock_bh(&adapter->mac_vlan_list_lock);
                return;
        }
        adapter->current_op = VIRTCHNL_OP_ADD_ETH_ADDR;

        len = struct_size(veal, list, count);
        if (len > IAVF_MAX_AQ_BUF_SIZE) {
                dev_warn(&adapter->pdev->dev, "Too many add MAC changes in one request\n");
                count = (IAVF_MAX_AQ_BUF_SIZE -
                         sizeof(struct virtchnl_ether_addr_list)) /
                        sizeof(struct virtchnl_ether_addr);
                len = struct_size(veal, list, count);
                more = true;
        }

        veal = kzalloc(len, GFP_ATOMIC);
        if (!veal) {
                spin_unlock_bh(&adapter->mac_vlan_list_lock);
                return;
        }

        veal->vsi_id = adapter->vsi_res->vsi_id;
        veal->num_elements = count;
        list_for_each_entry(f, &adapter->mac_filter_list, list) {
                if (f->add) {
                        ether_addr_copy(veal->list[i].addr, f->macaddr);
                        i++;
                        f->add = false;
                        if (i == count)
                                break;
                }
        }
        if (!more)
                adapter->aq_required &= ~IAVF_FLAG_AQ_ADD_MAC_FILTER;

        spin_unlock_bh(&adapter->mac_vlan_list_lock);

        iavf_send_pf_msg(adapter, VIRTCHNL_OP_ADD_ETH_ADDR, (u8 *)veal, len);
        kfree(veal);
}

/**
 * iavf_del_ether_addrs
 * @adapter: adapter structure
 *
 * Request that the PF remove one or more addresses from our filters.
 **/
void iavf_del_ether_addrs(struct iavf_adapter *adapter)
{
        struct virtchnl_ether_addr_list *veal;
        struct iavf_mac_filter *f, *ftmp;
        int i = 0, count = 0;
        bool more = false;
        size_t len;

        if (adapter->current_op != VIRTCHNL_OP_UNKNOWN) {
                /* bail because we already have a command pending */
                dev_err(&adapter->pdev->dev, "Cannot remove filters, command %d pending\n",
                        adapter->current_op);
                return;
        }

        spin_lock_bh(&adapter->mac_vlan_list_lock);

        list_for_each_entry(f, &adapter->mac_filter_list, list) {
                if (f->remove)
                        count++;
        }
        if (!count) {
                adapter->aq_required &= ~IAVF_FLAG_AQ_DEL_MAC_FILTER;
                spin_unlock_bh(&adapter->mac_vlan_list_lock);
                return;
        }
        adapter->current_op = VIRTCHNL_OP_DEL_ETH_ADDR;

        len = struct_size(veal, list, count);
        if (len > IAVF_MAX_AQ_BUF_SIZE) {
                dev_warn(&adapter->pdev->dev, "Too many delete MAC changes in one request\n");
                count = (IAVF_MAX_AQ_BUF_SIZE -
                         sizeof(struct virtchnl_ether_addr_list)) /
                        sizeof(struct virtchnl_ether_addr);
                len = struct_size(veal, list, count);
                more = true;
        }
        veal = kzalloc(len, GFP_ATOMIC);
        if (!veal) {
                spin_unlock_bh(&adapter->mac_vlan_list_lock);
                return;
        }

        veal->vsi_id = adapter->vsi_res->vsi_id;
        veal->num_elements = count;
        list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) {
                if (f->remove) {
                        ether_addr_copy(veal->list[i].addr, f->macaddr);
                        i++;
                        list_del(&f->list);
                        kfree(f);
                        if (i == count)
                                break;
                }
        }
        if (!more)
                adapter->aq_required &= ~IAVF_FLAG_AQ_DEL_MAC_FILTER;

        spin_unlock_bh(&adapter->mac_vlan_list_lock);

        iavf_send_pf_msg(adapter, VIRTCHNL_OP_DEL_ETH_ADDR, (u8 *)veal, len);
        kfree(veal);
}

/**
 * iavf_mac_add_ok
 * @adapter: adapter structure
 *
 * Submit list of filters based on PF response.
 **/
static void iavf_mac_add_ok(struct iavf_adapter *adapter)
{
        struct iavf_mac_filter *f, *ftmp;

        spin_lock_bh(&adapter->mac_vlan_list_lock);
        list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) {
                f->is_new_mac = false;
        }
        spin_unlock_bh(&adapter->mac_vlan_list_lock);
}

/**
 * iavf_mac_add_reject
 * @adapter: adapter structure
 *
 * Remove filters from list based on PF response.
 **/
static void iavf_mac_add_reject(struct iavf_adapter *adapter)
{
        struct net_device *netdev = adapter->netdev;
        struct iavf_mac_filter *f, *ftmp;

        spin_lock_bh(&adapter->mac_vlan_list_lock);
        list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) {
                if (f->remove && ether_addr_equal(f->macaddr, netdev->dev_addr))
                        f->remove = false;

                if (f->is_new_mac) {
                        list_del(&f->list);
                        kfree(f);
                }
        }
        spin_unlock_bh(&adapter->mac_vlan_list_lock);
}

/**
 * iavf_add_vlans
 * @adapter: adapter structure
 *
 * Request that the PF add one or more VLAN filters to our VSI.
 **/
void iavf_add_vlans(struct iavf_adapter *adapter)
{
        struct virtchnl_vlan_filter_list *vvfl;
        int len, i = 0, count = 0;
        struct iavf_vlan_filter *f;
        bool more = false;

        if (adapter->current_op != VIRTCHNL_OP_UNKNOWN) {
                /* bail because we already have a command pending */
                dev_err(&adapter->pdev->dev, "Cannot add VLANs, command %d pending\n",
                        adapter->current_op);
                return;
        }

        spin_lock_bh(&adapter->mac_vlan_list_lock);

        list_for_each_entry(f, &adapter->vlan_filter_list, list) {
                if (f->add)
                        count++;
        }
        if (!count) {
                adapter->aq_required &= ~IAVF_FLAG_AQ_ADD_VLAN_FILTER;
                spin_unlock_bh(&adapter->mac_vlan_list_lock);
                return;
        }
        adapter->current_op = VIRTCHNL_OP_ADD_VLAN;

        len = sizeof(struct virtchnl_vlan_filter_list) +
              (count * sizeof(u16));
        if (len > IAVF_MAX_AQ_BUF_SIZE) {
                dev_warn(&adapter->pdev->dev, "Too many add VLAN changes in one request\n");
                count = (IAVF_MAX_AQ_BUF_SIZE -
                         sizeof(struct virtchnl_vlan_filter_list)) /
                        sizeof(u16);
                len = sizeof(struct virtchnl_vlan_filter_list) +
                      (count * sizeof(u16));
                more = true;
        }
        vvfl = kzalloc(len, GFP_ATOMIC);
        if (!vvfl) {
                spin_unlock_bh(&adapter->mac_vlan_list_lock);
                return;
        }

        vvfl->vsi_id = adapter->vsi_res->vsi_id;
        vvfl->num_elements = count;
        list_for_each_entry(f, &adapter->vlan_filter_list, list) {
                if (f->add) {
                        vvfl->vlan_id[i] = f->vlan;
                        i++;
                        f->add = false;
                        if (i == count)
                                break;
                }
        }
        if (!more)
                adapter->aq_required &= ~IAVF_FLAG_AQ_ADD_VLAN_FILTER;

        spin_unlock_bh(&adapter->mac_vlan_list_lock);

        iavf_send_pf_msg(adapter, VIRTCHNL_OP_ADD_VLAN, (u8 *)vvfl, len);
        kfree(vvfl);
}

/**
 * iavf_del_vlans
 * @adapter: adapter structure
 *
 * Request that the PF remove one or more VLAN filters from our VSI.
 **/
void iavf_del_vlans(struct iavf_adapter *adapter)
{
        struct virtchnl_vlan_filter_list *vvfl;
        struct iavf_vlan_filter *f, *ftmp;
        int len, i = 0, count = 0;
        bool more = false;

        if (adapter->current_op != VIRTCHNL_OP_UNKNOWN) {
                /* bail because we already have a command pending */
                dev_err(&adapter->pdev->dev, "Cannot remove VLANs, command %d pending\n",
                        adapter->current_op);
                return;
        }

        spin_lock_bh(&adapter->mac_vlan_list_lock);

        list_for_each_entry(f, &adapter->vlan_filter_list, list) {
                if (f->remove)
                        count++;
        }
        if (!count) {
                adapter->aq_required &= ~IAVF_FLAG_AQ_DEL_VLAN_FILTER;
                spin_unlock_bh(&adapter->mac_vlan_list_lock);
                return;
        }
        adapter->current_op = VIRTCHNL_OP_DEL_VLAN;

        len = sizeof(struct virtchnl_vlan_filter_list) +
              (count * sizeof(u16));
        if (len > IAVF_MAX_AQ_BUF_SIZE) {
                dev_warn(&adapter->pdev->dev, "Too many delete VLAN changes in one request\n");
                count = (IAVF_MAX_AQ_BUF_SIZE -
                         sizeof(struct virtchnl_vlan_filter_list)) /
                        sizeof(u16);
                len = sizeof(struct virtchnl_vlan_filter_list) +
                      (count * sizeof(u16));
                more = true;
        }
        vvfl = kzalloc(len, GFP_ATOMIC);
        if (!vvfl) {
                spin_unlock_bh(&adapter->mac_vlan_list_lock);
                return;
        }

        vvfl->vsi_id = adapter->vsi_res->vsi_id;
        vvfl->num_elements = count;
        list_for_each_entry_safe(f, ftmp, &adapter->vlan_filter_list, list) {
                if (f->remove) {
                        vvfl->vlan_id[i] = f->vlan;
                        i++;
                        list_del(&f->list);
                        kfree(f);
                        if (i == count)
                                break;
                }
        }
        if (!more)
                adapter->aq_required &= ~IAVF_FLAG_AQ_DEL_VLAN_FILTER;

        spin_unlock_bh(&adapter->mac_vlan_list_lock);

        iavf_send_pf_msg(adapter, VIRTCHNL_OP_DEL_VLAN, (u8 *)vvfl, len);
        kfree(vvfl);
}

/**
 * iavf_set_promiscuous
 * @adapter: adapter structure
 * @flags: bitmask to control unicast/multicast promiscuous.
 *
 * Request that the PF enable promiscuous mode for our VSI.
 **/
void iavf_set_promiscuous(struct iavf_adapter *adapter, int flags)
{
        struct virtchnl_promisc_info vpi;
        int promisc_all;

        if (adapter->current_op != VIRTCHNL_OP_UNKNOWN) {
                /* bail because we already have a command pending */
                dev_err(&adapter->pdev->dev, "Cannot set promiscuous mode, command %d pending\n",
                        adapter->current_op);
                return;
        }

        promisc_all = FLAG_VF_UNICAST_PROMISC |
                      FLAG_VF_MULTICAST_PROMISC;
        if ((flags & promisc_all) == promisc_all) {
                adapter->flags |= IAVF_FLAG_PROMISC_ON;
                adapter->aq_required &= ~IAVF_FLAG_AQ_REQUEST_PROMISC;
                dev_info(&adapter->pdev->dev, "Entering promiscuous mode\n");
        }

        if (flags & FLAG_VF_MULTICAST_PROMISC) {
                adapter->flags |= IAVF_FLAG_ALLMULTI_ON;
                adapter->aq_required &= ~IAVF_FLAG_AQ_REQUEST_ALLMULTI;
                dev_info(&adapter->pdev->dev, "Entering multicast promiscuous mode\n");
        }

        if (!flags) {
                adapter->flags &= ~(IAVF_FLAG_PROMISC_ON |
                                    IAVF_FLAG_ALLMULTI_ON);
                adapter->aq_required &= ~(IAVF_FLAG_AQ_RELEASE_PROMISC |
                                          IAVF_FLAG_AQ_RELEASE_ALLMULTI);
                dev_info(&adapter->pdev->dev, "Leaving promiscuous mode\n");
        }

        adapter->current_op = VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE;
        vpi.vsi_id = adapter->vsi_res->vsi_id;
        vpi.flags = flags;
        iavf_send_pf_msg(adapter, VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE,
                         (u8 *)&vpi, sizeof(vpi));
}

/**
 * iavf_request_stats
 * @adapter: adapter structure
 *
 * Request VSI statistics from PF.
 **/
void iavf_request_stats(struct iavf_adapter *adapter)
{
        struct virtchnl_queue_select vqs;

        if (adapter->current_op != VIRTCHNL_OP_UNKNOWN) {
                /* no error message, this isn't crucial */
                return;
        }
        adapter->current_op = VIRTCHNL_OP_GET_STATS;
        vqs.vsi_id = adapter->vsi_res->vsi_id;
        /* queue maps are ignored for this message - only the vsi is used */
        if (iavf_send_pf_msg(adapter, VIRTCHNL_OP_GET_STATS, (u8 *)&vqs,
                             sizeof(vqs)))
                /* if the request failed, don't lock out others */
                adapter->current_op = VIRTCHNL_OP_UNKNOWN;
}

/**
 * iavf_get_hena
 * @adapter: adapter structure
 *
 * Request hash enable capabilities from PF
 **/
void iavf_get_hena(struct iavf_adapter *adapter)
{
        if (adapter->current_op != VIRTCHNL_OP_UNKNOWN) {
                /* bail because we already have a command pending */
                dev_err(&adapter->pdev->dev, "Cannot get RSS hash capabilities, command %d pending\n",
                        adapter->current_op);
                return;
        }
        adapter->current_op = VIRTCHNL_OP_GET_RSS_HENA_CAPS;
        adapter->aq_required &= ~IAVF_FLAG_AQ_GET_HENA;
        iavf_send_pf_msg(adapter, VIRTCHNL_OP_GET_RSS_HENA_CAPS, NULL, 0);
}

/**
 * iavf_set_hena
 * @adapter: adapter structure
 *
 * Request the PF to set our RSS hash capabilities
 **/
void iavf_set_hena(struct iavf_adapter *adapter)
{
        struct virtchnl_rss_hena vrh;

        if (adapter->current_op != VIRTCHNL_OP_UNKNOWN) {
                /* bail because we already have a command pending */
                dev_err(&adapter->pdev->dev, "Cannot set RSS hash enable, command %d pending\n",
                        adapter->current_op);
                return;
        }
        vrh.hena = adapter->hena;
        adapter->current_op = VIRTCHNL_OP_SET_RSS_HENA;
        adapter->aq_required &= ~IAVF_FLAG_AQ_SET_HENA;
        iavf_send_pf_msg(adapter, VIRTCHNL_OP_SET_RSS_HENA, (u8 *)&vrh,
                         sizeof(vrh));
}

/**
 * iavf_set_rss_key
 * @adapter: adapter structure
 *
 * Request the PF to set our RSS hash key
 **/
void iavf_set_rss_key(struct iavf_adapter *adapter)
{
        struct virtchnl_rss_key *vrk;
        int len;

        if (adapter->current_op != VIRTCHNL_OP_UNKNOWN) {
                /* bail because we already have a command pending */
                dev_err(&adapter->pdev->dev, "Cannot set RSS key, command %d pending\n",
                        adapter->current_op);
                return;
        }
        len = sizeof(struct virtchnl_rss_key) +
              (adapter->rss_key_size * sizeof(u8)) - 1;
        vrk = kzalloc(len, GFP_KERNEL);
        if (!vrk)
                return;
        vrk->vsi_id = adapter->vsi.id;
        vrk->key_len = adapter->rss_key_size;
        memcpy(vrk->key, adapter->rss_key, adapter->rss_key_size);

        adapter->current_op = VIRTCHNL_OP_CONFIG_RSS_KEY;
        adapter->aq_required &= ~IAVF_FLAG_AQ_SET_RSS_KEY;
        iavf_send_pf_msg(adapter, VIRTCHNL_OP_CONFIG_RSS_KEY, (u8 *)vrk, len);
        kfree(vrk);
}

/**
 * iavf_set_rss_lut
 * @adapter: adapter structure
 *
 * Request the PF to set our RSS lookup table
 **/
void iavf_set_rss_lut(struct iavf_adapter *adapter)
{
        struct virtchnl_rss_lut *vrl;
        int len;

        if (adapter->current_op != VIRTCHNL_OP_UNKNOWN) {
                /* bail because we already have a command pending */
                dev_err(&adapter->pdev->dev, "Cannot set RSS LUT, command %d pending\n",
                        adapter->current_op);
                return;
        }
        len = sizeof(struct virtchnl_rss_lut) +
              (adapter->rss_lut_size * sizeof(u8)) - 1;
        vrl = kzalloc(len, GFP_KERNEL);
        if (!vrl)
                return;
        vrl->vsi_id = adapter->vsi.id;
        vrl->lut_entries = adapter->rss_lut_size;
        memcpy(vrl->lut, adapter->rss_lut, adapter->rss_lut_size);
        adapter->current_op = VIRTCHNL_OP_CONFIG_RSS_LUT;
        adapter->aq_required &= ~IAVF_FLAG_AQ_SET_RSS_LUT;
        iavf_send_pf_msg(adapter, VIRTCHNL_OP_CONFIG_RSS_LUT, (u8 *)vrl, len);
        kfree(vrl);
}

/**
 * iavf_enable_vlan_stripping
 * @adapter: adapter structure
 *
 * Request VLAN header stripping to be enabled
 **/
void iavf_enable_vlan_stripping(struct iavf_adapter *adapter)
{
        if (adapter->current_op != VIRTCHNL_OP_UNKNOWN) {
                /* bail because we already have a command pending */
                dev_err(&adapter->pdev->dev, "Cannot enable stripping, command %d pending\n",
                        adapter->current_op);
                return;
        }
        adapter->current_op = VIRTCHNL_OP_ENABLE_VLAN_STRIPPING;
        adapter->aq_required &= ~IAVF_FLAG_AQ_ENABLE_VLAN_STRIPPING;
        iavf_send_pf_msg(adapter, VIRTCHNL_OP_ENABLE_VLAN_STRIPPING, NULL, 0);
}

/**
 * iavf_disable_vlan_stripping
 * @adapter: adapter structure
 *
 * Request VLAN header stripping to be disabled
 **/
void iavf_disable_vlan_stripping(struct iavf_adapter *adapter)
{
        if (adapter->current_op != VIRTCHNL_OP_UNKNOWN) {
                /* bail because we already have a command pending */
                dev_err(&adapter->pdev->dev, "Cannot disable stripping, command %d pending\n",
                        adapter->current_op);
                return;
        }
        adapter->current_op = VIRTCHNL_OP_DISABLE_VLAN_STRIPPING;
        adapter->aq_required &= ~IAVF_FLAG_AQ_DISABLE_VLAN_STRIPPING;
        iavf_send_pf_msg(adapter, VIRTCHNL_OP_DISABLE_VLAN_STRIPPING, NULL, 0);
}

#define IAVF_MAX_SPEED_STRLEN   13

/**
 * iavf_print_link_message - print link up or down
 * @adapter: adapter structure
 *
 * Log a message telling the world of our wonderous link status
 */
static void iavf_print_link_message(struct iavf_adapter *adapter)
{
        struct net_device *netdev = adapter->netdev;
        int link_speed_mbps;
        char *speed;

        if (!adapter->link_up) {
                netdev_info(netdev, "NIC Link is Down\n");
                return;
        }

        speed = kzalloc(IAVF_MAX_SPEED_STRLEN, GFP_KERNEL);
        if (!speed)
                return;

        if (ADV_LINK_SUPPORT(adapter)) {
                link_speed_mbps = adapter->link_speed_mbps;
                goto print_link_msg;
        }

        switch (adapter->link_speed) {
        case VIRTCHNL_LINK_SPEED_40GB:
                link_speed_mbps = SPEED_40000;
                break;
        case VIRTCHNL_LINK_SPEED_25GB:
                link_speed_mbps = SPEED_25000;
                break;
        case VIRTCHNL_LINK_SPEED_20GB:
                link_speed_mbps = SPEED_20000;
                break;
        case VIRTCHNL_LINK_SPEED_10GB:
                link_speed_mbps = SPEED_10000;
                break;
        case VIRTCHNL_LINK_SPEED_5GB:
                link_speed_mbps = SPEED_5000;
                break;
        case VIRTCHNL_LINK_SPEED_2_5GB:
                link_speed_mbps = SPEED_2500;
                break;
        case VIRTCHNL_LINK_SPEED_1GB:
                link_speed_mbps = SPEED_1000;
                break;
        case VIRTCHNL_LINK_SPEED_100MB:
                link_speed_mbps = SPEED_100;
                break;
        default:
                link_speed_mbps = SPEED_UNKNOWN;
                break;
        }

print_link_msg:
        if (link_speed_mbps > SPEED_1000) {
                if (link_speed_mbps == SPEED_2500)
                        snprintf(speed, IAVF_MAX_SPEED_STRLEN, "2.5 Gbps");

                else
                        /* convert to Gbps inline */
                        snprintf(speed, IAVF_MAX_SPEED_STRLEN, "%d %s",
                                 link_speed_mbps / 1000, "Gbps");
        } else if (link_speed_mbps == SPEED_UNKNOWN) {
                snprintf(speed, IAVF_MAX_SPEED_STRLEN, "%s", "Unknown Mbps");
        } else {
                snprintf(speed, IAVF_MAX_SPEED_STRLEN, "%u %s",
                         link_speed_mbps, "Mbps");
        }

        netdev_info(netdev, "NIC Link is Up Speed is %s Full Duplex\n", speed);
        kfree(speed);
}

/**
 * iavf_get_vpe_link_status
 * @adapter: adapter structure
 * @vpe: virtchnl_pf_event structure
 *
 * Helper function for determining the link status
 **/
static bool
iavf_get_vpe_link_status(struct iavf_adapter *adapter,
                         struct virtchnl_pf_event *vpe)
{
        if (ADV_LINK_SUPPORT(adapter))
                return vpe->event_data.link_event_adv.link_status;
        else
                return vpe->event_data.link_event.link_status;
}

/**
 * iavf_set_adapter_link_speed_from_vpe
 * @adapter: adapter structure for which we are setting the link speed
 * @vpe: virtchnl_pf_event structure that contains the link speed we are setting
 *
 * Helper function for setting iavf_adapter link speed
 **/
static void
iavf_set_adapter_link_speed_from_vpe(struct iavf_adapter *adapter,
                                     struct virtchnl_pf_event *vpe)
{
        if (ADV_LINK_SUPPORT(adapter))
                adapter->link_speed_mbps =
                        vpe->event_data.link_event_adv.link_speed;
        else
                adapter->link_speed = vpe->event_data.link_event.link_speed;
}

/**
 * iavf_enable_channels
 * @adapter: adapter structure
 *
 * Request that the PF enable channels as specified by
 * the user via tc tool.
 **/
void iavf_enable_channels(struct iavf_adapter *adapter)
{
        struct virtchnl_tc_info *vti = NULL;
        size_t len;
        int i;

        if (adapter->current_op != VIRTCHNL_OP_UNKNOWN) {
                /* bail because we already have a command pending */
                dev_err(&adapter->pdev->dev, "Cannot configure mqprio, command %d pending\n",
                        adapter->current_op);
                return;
        }

        len = struct_size(vti, list, adapter->num_tc - 1);
        vti = kzalloc(len, GFP_KERNEL);
        if (!vti)
                return;
        vti->num_tc = adapter->num_tc;
        for (i = 0; i < vti->num_tc; i++) {
                vti->list[i].count = adapter->ch_config.ch_info[i].count;
                vti->list[i].offset = adapter->ch_config.ch_info[i].offset;
                vti->list[i].pad = 0;
                vti->list[i].max_tx_rate =
                                adapter->ch_config.ch_info[i].max_tx_rate;
        }

        adapter->ch_config.state = __IAVF_TC_RUNNING;
        adapter->flags |= IAVF_FLAG_REINIT_ITR_NEEDED;
        adapter->current_op = VIRTCHNL_OP_ENABLE_CHANNELS;
        adapter->aq_required &= ~IAVF_FLAG_AQ_ENABLE_CHANNELS;
        iavf_send_pf_msg(adapter, VIRTCHNL_OP_ENABLE_CHANNELS, (u8 *)vti, len);
        kfree(vti);
}

/**
 * iavf_disable_channels
 * @adapter: adapter structure
 *
 * Request that the PF disable channels that are configured
 **/
void iavf_disable_channels(struct iavf_adapter *adapter)
{
        if (adapter->current_op != VIRTCHNL_OP_UNKNOWN) {
                /* bail because we already have a command pending */
                dev_err(&adapter->pdev->dev, "Cannot configure mqprio, command %d pending\n",
                        adapter->current_op);
                return;
        }

        adapter->ch_config.state = __IAVF_TC_INVALID;
        adapter->flags |= IAVF_FLAG_REINIT_ITR_NEEDED;
        adapter->current_op = VIRTCHNL_OP_DISABLE_CHANNELS;
        adapter->aq_required &= ~IAVF_FLAG_AQ_DISABLE_CHANNELS;
        iavf_send_pf_msg(adapter, VIRTCHNL_OP_DISABLE_CHANNELS, NULL, 0);
}

/**
 * iavf_print_cloud_filter
 * @adapter: adapter structure
 * @f: cloud filter to print
 *
 * Print the cloud filter
 **/
static void iavf_print_cloud_filter(struct iavf_adapter *adapter,
                                    struct virtchnl_filter *f)
{
        switch (f->flow_type) {
        case VIRTCHNL_TCP_V4_FLOW:
                dev_info(&adapter->pdev->dev, "dst_mac: %pM src_mac: %pM vlan_id: %hu dst_ip: %pI4 src_ip %pI4 dst_port %hu src_port %hu\n",
                         &f->data.tcp_spec.dst_mac,
                         &f->data.tcp_spec.src_mac,
                         ntohs(f->data.tcp_spec.vlan_id),
                         &f->data.tcp_spec.dst_ip[0],
                         &f->data.tcp_spec.src_ip[0],
                         ntohs(f->data.tcp_spec.dst_port),
                         ntohs(f->data.tcp_spec.src_port));
                break;
        case VIRTCHNL_TCP_V6_FLOW:
                dev_info(&adapter->pdev->dev, "dst_mac: %pM src_mac: %pM vlan_id: %hu dst_ip: %pI6 src_ip %pI6 dst_port %hu src_port %hu\n",
                         &f->data.tcp_spec.dst_mac,
                         &f->data.tcp_spec.src_mac,
                         ntohs(f->data.tcp_spec.vlan_id),
                         &f->data.tcp_spec.dst_ip,
                         &f->data.tcp_spec.src_ip,
                         ntohs(f->data.tcp_spec.dst_port),
                         ntohs(f->data.tcp_spec.src_port));
                break;
        }
}

/**
 * iavf_add_cloud_filter
 * @adapter: adapter structure
 *
 * Request that the PF add cloud filters as specified
 * by the user via tc tool.
 **/
void iavf_add_cloud_filter(struct iavf_adapter *adapter)
{
        struct iavf_cloud_filter *cf;
        struct virtchnl_filter *f;
        int len = 0, count = 0;

        if (adapter->current_op != VIRTCHNL_OP_UNKNOWN) {
                /* bail because we already have a command pending */
                dev_err(&adapter->pdev->dev, "Cannot add cloud filter, command %d pending\n",
                        adapter->current_op);
                return;
        }
        list_for_each_entry(cf, &adapter->cloud_filter_list, list) {
                if (cf->add) {
                        count++;
                        break;
                }
        }
        if (!count) {
                adapter->aq_required &= ~IAVF_FLAG_AQ_ADD_CLOUD_FILTER;
                return;
        }
        adapter->current_op = VIRTCHNL_OP_ADD_CLOUD_FILTER;

        len = sizeof(struct virtchnl_filter);
        f = kzalloc(len, GFP_KERNEL);
        if (!f)
                return;

        list_for_each_entry(cf, &adapter->cloud_filter_list, list) {
                if (cf->add) {
                        memcpy(f, &cf->f, sizeof(struct virtchnl_filter));
                        cf->add = false;
                        cf->state = __IAVF_CF_ADD_PENDING;
                        iavf_send_pf_msg(adapter, VIRTCHNL_OP_ADD_CLOUD_FILTER,
                                         (u8 *)f, len);
                }
        }
        kfree(f);
}

/**
 * iavf_del_cloud_filter
 * @adapter: adapter structure
 *
 * Request that the PF delete cloud filters as specified
 * by the user via tc tool.
 **/
void iavf_del_cloud_filter(struct iavf_adapter *adapter)
{
        struct iavf_cloud_filter *cf, *cftmp;
        struct virtchnl_filter *f;
        int len = 0, count = 0;

        if (adapter->current_op != VIRTCHNL_OP_UNKNOWN) {
                /* bail because we already have a command pending */
                dev_err(&adapter->pdev->dev, "Cannot remove cloud filter, command %d pending\n",
                        adapter->current_op);
                return;
        }
        list_for_each_entry(cf, &adapter->cloud_filter_list, list) {
                if (cf->del) {
                        count++;
                        break;
                }
        }
        if (!count) {
                adapter->aq_required &= ~IAVF_FLAG_AQ_DEL_CLOUD_FILTER;
                return;
        }
        adapter->current_op = VIRTCHNL_OP_DEL_CLOUD_FILTER;

        len = sizeof(struct virtchnl_filter);
        f = kzalloc(len, GFP_KERNEL);
        if (!f)
                return;

        list_for_each_entry_safe(cf, cftmp, &adapter->cloud_filter_list, list) {
                if (cf->del) {
                        memcpy(f, &cf->f, sizeof(struct virtchnl_filter));
                        cf->del = false;
                        cf->state = __IAVF_CF_DEL_PENDING;
                        iavf_send_pf_msg(adapter, VIRTCHNL_OP_DEL_CLOUD_FILTER,
                                         (u8 *)f, len);
                }
        }
        kfree(f);
}

/**
 * iavf_add_fdir_filter
 * @adapter: the VF adapter structure
 *
 * Request that the PF add Flow Director filters as specified
 * by the user via ethtool.
 **/
void iavf_add_fdir_filter(struct iavf_adapter *adapter)
{
        struct iavf_fdir_fltr *fdir;
        struct virtchnl_fdir_add *f;
        bool process_fltr = false;
        int len;

        if (adapter->current_op != VIRTCHNL_OP_UNKNOWN) {
                /* bail because we already have a command pending */
                dev_err(&adapter->pdev->dev, "Cannot add Flow Director filter, command %d pending\n",
                        adapter->current_op);
                return;
        }

        len = sizeof(struct virtchnl_fdir_add);
        f = kzalloc(len, GFP_KERNEL);
        if (!f)
                return;

        spin_lock_bh(&adapter->fdir_fltr_lock);
        list_for_each_entry(fdir, &adapter->fdir_list_head, list) {
                if (fdir->state == IAVF_FDIR_FLTR_ADD_REQUEST) {
                        process_fltr = true;
                        fdir->state = IAVF_FDIR_FLTR_ADD_PENDING;
                        memcpy(f, &fdir->vc_add_msg, len);
                        break;
                }
        }
        spin_unlock_bh(&adapter->fdir_fltr_lock);

        if (!process_fltr) {
                /* prevent iavf_add_fdir_filter() from being called when there
                 * are no filters to add
                 */
                adapter->aq_required &= ~IAVF_FLAG_AQ_ADD_FDIR_FILTER;
                kfree(f);
                return;
        }
        adapter->current_op = VIRTCHNL_OP_ADD_FDIR_FILTER;
        iavf_send_pf_msg(adapter, VIRTCHNL_OP_ADD_FDIR_FILTER, (u8 *)f, len);
        kfree(f);
}

/**
 * iavf_del_fdir_filter
 * @adapter: the VF adapter structure
 *
 * Request that the PF delete Flow Director filters as specified
 * by the user via ethtool.
 **/
void iavf_del_fdir_filter(struct iavf_adapter *adapter)
{
        struct iavf_fdir_fltr *fdir;
        struct virtchnl_fdir_del f;
        bool process_fltr = false;
        int len;

        if (adapter->current_op != VIRTCHNL_OP_UNKNOWN) {
                /* bail because we already have a command pending */
                dev_err(&adapter->pdev->dev, "Cannot remove Flow Director filter, command %d pending\n",
                        adapter->current_op);
                return;
        }

        len = sizeof(struct virtchnl_fdir_del);

        spin_lock_bh(&adapter->fdir_fltr_lock);
        list_for_each_entry(fdir, &adapter->fdir_list_head, list) {
                if (fdir->state == IAVF_FDIR_FLTR_DEL_REQUEST) {
                        process_fltr = true;
                        memset(&f, 0, len);
                        f.vsi_id = fdir->vc_add_msg.vsi_id;
                        f.flow_id = fdir->flow_id;
                        fdir->state = IAVF_FDIR_FLTR_DEL_PENDING;
                        break;
                }
        }
        spin_unlock_bh(&adapter->fdir_fltr_lock);

        if (!process_fltr) {
                adapter->aq_required &= ~IAVF_FLAG_AQ_DEL_FDIR_FILTER;
                return;
        }

        adapter->current_op = VIRTCHNL_OP_DEL_FDIR_FILTER;
        iavf_send_pf_msg(adapter, VIRTCHNL_OP_DEL_FDIR_FILTER, (u8 *)&f, len);
}

/**
 * iavf_add_adv_rss_cfg
 * @adapter: the VF adapter structure
 *
 * Request that the PF add RSS configuration as specified
 * by the user via ethtool.
 **/
void iavf_add_adv_rss_cfg(struct iavf_adapter *adapter)
{
        struct virtchnl_rss_cfg *rss_cfg;
        struct iavf_adv_rss *rss;
        bool process_rss = false;
        int len;

        if (adapter->current_op != VIRTCHNL_OP_UNKNOWN) {
                /* bail because we already have a command pending */
                dev_err(&adapter->pdev->dev, "Cannot add RSS configuration, command %d pending\n",
                        adapter->current_op);
                return;
        }

        len = sizeof(struct virtchnl_rss_cfg);
        rss_cfg = kzalloc(len, GFP_KERNEL);
        if (!rss_cfg)
                return;

        spin_lock_bh(&adapter->adv_rss_lock);
        list_for_each_entry(rss, &adapter->adv_rss_list_head, list) {
                if (rss->state == IAVF_ADV_RSS_ADD_REQUEST) {
                        process_rss = true;
                        rss->state = IAVF_ADV_RSS_ADD_PENDING;
                        memcpy(rss_cfg, &rss->cfg_msg, len);
                        iavf_print_adv_rss_cfg(adapter, rss,
                                               "Input set change for",
                                               "is pending");
                        break;
                }
        }
        spin_unlock_bh(&adapter->adv_rss_lock);

        if (process_rss) {
                adapter->current_op = VIRTCHNL_OP_ADD_RSS_CFG;
                iavf_send_pf_msg(adapter, VIRTCHNL_OP_ADD_RSS_CFG,
                                 (u8 *)rss_cfg, len);
        } else {
                adapter->aq_required &= ~IAVF_FLAG_AQ_ADD_ADV_RSS_CFG;
        }

        kfree(rss_cfg);
}

/**
 * iavf_del_adv_rss_cfg
 * @adapter: the VF adapter structure
 *
 * Request that the PF delete RSS configuration as specified
 * by the user via ethtool.
 **/
void iavf_del_adv_rss_cfg(struct iavf_adapter *adapter)
{
        struct virtchnl_rss_cfg *rss_cfg;
        struct iavf_adv_rss *rss;
        bool process_rss = false;
        int len;

        if (adapter->current_op != VIRTCHNL_OP_UNKNOWN) {
                /* bail because we already have a command pending */
                dev_err(&adapter->pdev->dev, "Cannot remove RSS configuration, command %d pending\n",
                        adapter->current_op);
                return;
        }

        len = sizeof(struct virtchnl_rss_cfg);
        rss_cfg = kzalloc(len, GFP_KERNEL);
        if (!rss_cfg)
                return;

        spin_lock_bh(&adapter->adv_rss_lock);
        list_for_each_entry(rss, &adapter->adv_rss_list_head, list) {
                if (rss->state == IAVF_ADV_RSS_DEL_REQUEST) {
                        process_rss = true;
                        rss->state = IAVF_ADV_RSS_DEL_PENDING;
                        memcpy(rss_cfg, &rss->cfg_msg, len);
                        break;
                }
        }
        spin_unlock_bh(&adapter->adv_rss_lock);

        if (process_rss) {
                adapter->current_op = VIRTCHNL_OP_DEL_RSS_CFG;
                iavf_send_pf_msg(adapter, VIRTCHNL_OP_DEL_RSS_CFG,
                                 (u8 *)rss_cfg, len);
        } else {
                adapter->aq_required &= ~IAVF_FLAG_AQ_DEL_ADV_RSS_CFG;
        }

        kfree(rss_cfg);
}

/**
 * iavf_request_reset
 * @adapter: adapter structure
 *
 * Request that the PF reset this VF. No response is expected.
 **/
void iavf_request_reset(struct iavf_adapter *adapter)
{
        /* Don't check CURRENT_OP - this is always higher priority */
        iavf_send_pf_msg(adapter, VIRTCHNL_OP_RESET_VF, NULL, 0);
        adapter->current_op = VIRTCHNL_OP_UNKNOWN;
}

/**
 * iavf_virtchnl_completion
 * @adapter: adapter structure
 * @v_opcode: opcode sent by PF
 * @v_retval: retval sent by PF
 * @msg: message sent by PF
 * @msglen: message length
 *
 * Asynchronous completion function for admin queue messages. Rather than busy
 * wait, we fire off our requests and assume that no errors will be returned.
 * This function handles the reply messages.
 **/
void iavf_virtchnl_completion(struct iavf_adapter *adapter,
                              enum virtchnl_ops v_opcode,
                              enum iavf_status v_retval, u8 *msg, u16 msglen)
{
        struct net_device *netdev = adapter->netdev;

        if (v_opcode == VIRTCHNL_OP_EVENT) {
                struct virtchnl_pf_event *vpe =
                        (struct virtchnl_pf_event *)msg;
                bool link_up = iavf_get_vpe_link_status(adapter, vpe);

                switch (vpe->event) {
                case VIRTCHNL_EVENT_LINK_CHANGE:
                        iavf_set_adapter_link_speed_from_vpe(adapter, vpe);

                        /* we've already got the right link status, bail */
                        if (adapter->link_up == link_up)
                                break;

                        if (link_up) {
                                /* If we get link up message and start queues
                                 * before our queues are configured it will
                                 * trigger a TX hang. In that case, just ignore
                                 * the link status message,we'll get another one
                                 * after we enable queues and actually prepared
                                 * to send traffic.
                                 */
                                if (adapter->state != __IAVF_RUNNING)
                                        break;

                                /* For ADq enabled VF, we reconfigure VSIs and
                                 * re-allocate queues. Hence wait till all
                                 * queues are enabled.
                                 */
                                if (adapter->flags &
                                    IAVF_FLAG_QUEUES_DISABLED)
                                        break;
                        }

                        adapter->link_up = link_up;
                        if (link_up) {
                                netif_tx_start_all_queues(netdev);
                                netif_carrier_on(netdev);
                        } else {
                                netif_tx_stop_all_queues(netdev);
                                netif_carrier_off(netdev);
                        }
                        iavf_print_link_message(adapter);
                        break;
                case VIRTCHNL_EVENT_RESET_IMPENDING:
                        dev_info(&adapter->pdev->dev, "Reset warning received from the PF\n");
                        if (!(adapter->flags & IAVF_FLAG_RESET_PENDING)) {
                                adapter->flags |= IAVF_FLAG_RESET_PENDING;
                                dev_info(&adapter->pdev->dev, "Scheduling reset task\n");
                                queue_work(iavf_wq, &adapter->reset_task);
                        }
                        break;
                default:
                        dev_err(&adapter->pdev->dev, "Unknown event %d from PF\n",
                                vpe->event);
                        break;
                }
                return;
        }
        if (v_retval) {
                switch (v_opcode) {
                case VIRTCHNL_OP_ADD_VLAN:
                        dev_err(&adapter->pdev->dev, "Failed to add VLAN filter, error %s\n",
                                iavf_stat_str(&adapter->hw, v_retval));
                        break;
                case VIRTCHNL_OP_ADD_ETH_ADDR:
                        dev_err(&adapter->pdev->dev, "Failed to add MAC filter, error %s\n",
                                iavf_stat_str(&adapter->hw, v_retval));
                        iavf_mac_add_reject(adapter);
                        /* restore administratively set MAC address */
                        ether_addr_copy(adapter->hw.mac.addr, netdev->dev_addr);
                        break;
                case VIRTCHNL_OP_DEL_VLAN:
                        dev_err(&adapter->pdev->dev, "Failed to delete VLAN filter, error %s\n",
                                iavf_stat_str(&adapter->hw, v_retval));
                        break;
                case VIRTCHNL_OP_DEL_ETH_ADDR:
                        dev_err(&adapter->pdev->dev, "Failed to delete MAC filter, error %s\n",
                                iavf_stat_str(&adapter->hw, v_retval));
                        break;
                case VIRTCHNL_OP_ENABLE_CHANNELS:
                        dev_err(&adapter->pdev->dev, "Failed to configure queue channels, error %s\n",
                                iavf_stat_str(&adapter->hw, v_retval));
                        adapter->flags &= ~IAVF_FLAG_REINIT_ITR_NEEDED;
                        adapter->ch_config.state = __IAVF_TC_INVALID;
                        netdev_reset_tc(netdev);
                        netif_tx_start_all_queues(netdev);
                        break;
                case VIRTCHNL_OP_DISABLE_CHANNELS:
                        dev_err(&adapter->pdev->dev, "Failed to disable queue channels, error %s\n",
                                iavf_stat_str(&adapter->hw, v_retval));
                        adapter->flags &= ~IAVF_FLAG_REINIT_ITR_NEEDED;
                        adapter->ch_config.state = __IAVF_TC_RUNNING;
                        netif_tx_start_all_queues(netdev);
                        break;
                case VIRTCHNL_OP_ADD_CLOUD_FILTER: {
                        struct iavf_cloud_filter *cf, *cftmp;

                        list_for_each_entry_safe(cf, cftmp,
                                                 &adapter->cloud_filter_list,
                                                 list) {
                                if (cf->state == __IAVF_CF_ADD_PENDING) {
                                        cf->state = __IAVF_CF_INVALID;
                                        dev_info(&adapter->pdev->dev, "Failed to add cloud filter, error %s\n",
                                                 iavf_stat_str(&adapter->hw,
                                                               v_retval));
                                        iavf_print_cloud_filter(adapter,
                                                                &cf->f);
                                        list_del(&cf->list);
                                        kfree(cf);
                                        adapter->num_cloud_filters--;
                                }
                        }
                        }
                        break;
                case VIRTCHNL_OP_DEL_CLOUD_FILTER: {
                        struct iavf_cloud_filter *cf;

                        list_for_each_entry(cf, &adapter->cloud_filter_list,
                                            list) {
                                if (cf->state == __IAVF_CF_DEL_PENDING) {
                                        cf->state = __IAVF_CF_ACTIVE;
                                        dev_info(&adapter->pdev->dev, "Failed to del cloud filter, error %s\n",
                                                 iavf_stat_str(&adapter->hw,
                                                               v_retval));
                                        iavf_print_cloud_filter(adapter,
                                                                &cf->f);
                                }
                        }
                        }
                        break;
                case VIRTCHNL_OP_ADD_FDIR_FILTER: {
                        struct iavf_fdir_fltr *fdir, *fdir_tmp;

                        spin_lock_bh(&adapter->fdir_fltr_lock);
                        list_for_each_entry_safe(fdir, fdir_tmp,
                                                 &adapter->fdir_list_head,
                                                 list) {
                                if (fdir->state == IAVF_FDIR_FLTR_ADD_PENDING) {
                                        dev_info(&adapter->pdev->dev, "Failed to add Flow Director filter, error %s\n",
                                                 iavf_stat_str(&adapter->hw,
                                                               v_retval));
                                        iavf_print_fdir_fltr(adapter, fdir);
                                        if (msglen)
                                                dev_err(&adapter->pdev->dev,
                                                        "%s\n", msg);
                                        list_del(&fdir->list);
                                        kfree(fdir);
                                        adapter->fdir_active_fltr--;
                                }
                        }
                        spin_unlock_bh(&adapter->fdir_fltr_lock);
                        }
                        break;
                case VIRTCHNL_OP_DEL_FDIR_FILTER: {
                        struct iavf_fdir_fltr *fdir;

                        spin_lock_bh(&adapter->fdir_fltr_lock);
                        list_for_each_entry(fdir, &adapter->fdir_list_head,
                                            list) {
                                if (fdir->state == IAVF_FDIR_FLTR_DEL_PENDING) {
                                        fdir->state = IAVF_FDIR_FLTR_ACTIVE;
                                        dev_info(&adapter->pdev->dev, "Failed to del Flow Director filter, error %s\n",
                                                 iavf_stat_str(&adapter->hw,
                                                               v_retval));
                                        iavf_print_fdir_fltr(adapter, fdir);
                                }
                        }
                        spin_unlock_bh(&adapter->fdir_fltr_lock);
                        }
                        break;
                case VIRTCHNL_OP_ADD_RSS_CFG: {
                        struct iavf_adv_rss *rss, *rss_tmp;

                        spin_lock_bh(&adapter->adv_rss_lock);
                        list_for_each_entry_safe(rss, rss_tmp,
                                                 &adapter->adv_rss_list_head,
                                                 list) {
                                if (rss->state == IAVF_ADV_RSS_ADD_PENDING) {
                                        iavf_print_adv_rss_cfg(adapter, rss,
                                                               "Failed to change the input set for",
                                                               NULL);
                                        list_del(&rss->list);
                                        kfree(rss);
                                }
                        }
                        spin_unlock_bh(&adapter->adv_rss_lock);
                        }
                        break;
                case VIRTCHNL_OP_DEL_RSS_CFG: {
                        struct iavf_adv_rss *rss;

                        spin_lock_bh(&adapter->adv_rss_lock);
                        list_for_each_entry(rss, &adapter->adv_rss_list_head,
                                            list) {
                                if (rss->state == IAVF_ADV_RSS_DEL_PENDING) {
                                        rss->state = IAVF_ADV_RSS_ACTIVE;
                                        dev_err(&adapter->pdev->dev, "Failed to delete RSS configuration, error %s\n",
                                                iavf_stat_str(&adapter->hw,
                                                              v_retval));
                                }
                        }
                        spin_unlock_bh(&adapter->adv_rss_lock);
                        }
                        break;
                case VIRTCHNL_OP_ENABLE_VLAN_STRIPPING:
                case VIRTCHNL_OP_DISABLE_VLAN_STRIPPING:
                        dev_warn(&adapter->pdev->dev, "Changing VLAN Stripping is not allowed when Port VLAN is configured\n");
                        break;
                default:
                        dev_err(&adapter->pdev->dev, "PF returned error %d (%s) to our request %d\n",
                                v_retval, iavf_stat_str(&adapter->hw, v_retval),
                                v_opcode);
                }
        }
        switch (v_opcode) {
        case VIRTCHNL_OP_ADD_ETH_ADDR:
                if (!v_retval)
                        iavf_mac_add_ok(adapter);
                if (!ether_addr_equal(netdev->dev_addr, adapter->hw.mac.addr))
                        ether_addr_copy(netdev->dev_addr, adapter->hw.mac.addr);
                break;
        case VIRTCHNL_OP_GET_STATS: {
                struct iavf_eth_stats *stats =
                        (struct iavf_eth_stats *)msg;
                netdev->stats.rx_packets = stats->rx_unicast +
                                           stats->rx_multicast +
                                           stats->rx_broadcast;
                netdev->stats.tx_packets = stats->tx_unicast +
                                           stats->tx_multicast +
                                           stats->tx_broadcast;
                netdev->stats.rx_bytes = stats->rx_bytes;
                netdev->stats.tx_bytes = stats->tx_bytes;
                netdev->stats.tx_errors = stats->tx_errors;
                netdev->stats.rx_dropped = stats->rx_discards;
                netdev->stats.tx_dropped = stats->tx_discards;
                adapter->current_stats = *stats;
                }
                break;
        case VIRTCHNL_OP_GET_VF_RESOURCES: {
                u16 len = sizeof(struct virtchnl_vf_resource) +
                          IAVF_MAX_VF_VSI *
                          sizeof(struct virtchnl_vsi_resource);
                memcpy(adapter->vf_res, msg, min(msglen, len));
                iavf_validate_num_queues(adapter);
                iavf_vf_parse_hw_config(&adapter->hw, adapter->vf_res);
                if (is_zero_ether_addr(adapter->hw.mac.addr)) {
                        /* restore current mac address */
                        ether_addr_copy(adapter->hw.mac.addr, netdev->dev_addr);
                } else {
                        /* refresh current mac address if changed */
                        ether_addr_copy(netdev->dev_addr, adapter->hw.mac.addr);
                        ether_addr_copy(netdev->perm_addr,
                                        adapter->hw.mac.addr);
                }
                spin_lock_bh(&adapter->mac_vlan_list_lock);
                iavf_add_filter(adapter, adapter->hw.mac.addr);
                spin_unlock_bh(&adapter->mac_vlan_list_lock);
                iavf_process_config(adapter);
                }
                break;
        case VIRTCHNL_OP_ENABLE_QUEUES:
                /* enable transmits */
                iavf_irq_enable(adapter, true);
                adapter->flags &= ~IAVF_FLAG_QUEUES_DISABLED;
                break;
        case VIRTCHNL_OP_DISABLE_QUEUES:
                iavf_free_all_tx_resources(adapter);
                iavf_free_all_rx_resources(adapter);
                if (adapter->state == __IAVF_DOWN_PENDING) {
                        adapter->state = __IAVF_DOWN;
                        wake_up(&adapter->down_waitqueue);
                }
                break;
        case VIRTCHNL_OP_VERSION:
        case VIRTCHNL_OP_CONFIG_IRQ_MAP:
                /* Don't display an error if we get these out of sequence.
                 * If the firmware needed to get kicked, we'll get these and
                 * it's no problem.
                 */
                if (v_opcode != adapter->current_op)
                        return;
                break;
        case VIRTCHNL_OP_IWARP:
                /* Gobble zero-length replies from the PF. They indicate that
                 * a previous message was received OK, and the client doesn't
                 * care about that.
                 */
                if (msglen && CLIENT_ENABLED(adapter))
                        iavf_notify_client_message(&adapter->vsi, msg, msglen);
                break;

        case VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP:
                adapter->client_pending &=
                                ~(BIT(VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP));
                break;
        case VIRTCHNL_OP_GET_RSS_HENA_CAPS: {
                struct virtchnl_rss_hena *vrh = (struct virtchnl_rss_hena *)msg;

                if (msglen == sizeof(*vrh))
                        adapter->hena = vrh->hena;
                else
                        dev_warn(&adapter->pdev->dev,
                                 "Invalid message %d from PF\n", v_opcode);
                }
                break;
        case VIRTCHNL_OP_REQUEST_QUEUES: {
                struct virtchnl_vf_res_request *vfres =
                        (struct virtchnl_vf_res_request *)msg;

                if (vfres->num_queue_pairs != adapter->num_req_queues) {
                        dev_info(&adapter->pdev->dev,
                                 "Requested %d queues, PF can support %d\n",
                                 adapter->num_req_queues,
                                 vfres->num_queue_pairs);
                        adapter->num_req_queues = 0;
                        adapter->flags &= ~IAVF_FLAG_REINIT_ITR_NEEDED;
                }
                }
                break;
        case VIRTCHNL_OP_ADD_CLOUD_FILTER: {
                struct iavf_cloud_filter *cf;

                list_for_each_entry(cf, &adapter->cloud_filter_list, list) {
                        if (cf->state == __IAVF_CF_ADD_PENDING)
                                cf->state = __IAVF_CF_ACTIVE;
                }
                }
                break;
        case VIRTCHNL_OP_DEL_CLOUD_FILTER: {
                struct iavf_cloud_filter *cf, *cftmp;

                list_for_each_entry_safe(cf, cftmp, &adapter->cloud_filter_list,
                                         list) {
                        if (cf->state == __IAVF_CF_DEL_PENDING) {
                                cf->state = __IAVF_CF_INVALID;
                                list_del(&cf->list);
                                kfree(cf);
                                adapter->num_cloud_filters--;
                        }
                }
                }
                break;
        case VIRTCHNL_OP_ADD_FDIR_FILTER: {
                struct virtchnl_fdir_add *add_fltr = (struct virtchnl_fdir_add *)msg;
                struct iavf_fdir_fltr *fdir, *fdir_tmp;

                spin_lock_bh(&adapter->fdir_fltr_lock);
                list_for_each_entry_safe(fdir, fdir_tmp,
                                         &adapter->fdir_list_head,
                                         list) {
                        if (fdir->state == IAVF_FDIR_FLTR_ADD_PENDING) {
                                if (add_fltr->status == VIRTCHNL_FDIR_SUCCESS) {
                                        dev_info(&adapter->pdev->dev, "Flow Director filter with location %u is added\n",
                                                 fdir->loc);
                                        fdir->state = IAVF_FDIR_FLTR_ACTIVE;
                                        fdir->flow_id = add_fltr->flow_id;
                                } else {
                                        dev_info(&adapter->pdev->dev, "Failed to add Flow Director filter with status: %d\n",
                                                 add_fltr->status);
                                        iavf_print_fdir_fltr(adapter, fdir);
                                        list_del(&fdir->list);
                                        kfree(fdir);
                                        adapter->fdir_active_fltr--;
                                }
                        }
                }
                spin_unlock_bh(&adapter->fdir_fltr_lock);
                }
                break;
        case VIRTCHNL_OP_DEL_FDIR_FILTER: {
                struct virtchnl_fdir_del *del_fltr = (struct virtchnl_fdir_del *)msg;
                struct iavf_fdir_fltr *fdir, *fdir_tmp;

                spin_lock_bh(&adapter->fdir_fltr_lock);
                list_for_each_entry_safe(fdir, fdir_tmp, &adapter->fdir_list_head,
                                         list) {
                        if (fdir->state == IAVF_FDIR_FLTR_DEL_PENDING) {
                                if (del_fltr->status == VIRTCHNL_FDIR_SUCCESS) {
                                        dev_info(&adapter->pdev->dev, "Flow Director filter with location %u is deleted\n",
                                                 fdir->loc);
                                        list_del(&fdir->list);
                                        kfree(fdir);
                                        adapter->fdir_active_fltr--;
                                } else {
                                        fdir->state = IAVF_FDIR_FLTR_ACTIVE;
                                        dev_info(&adapter->pdev->dev, "Failed to delete Flow Director filter with status: %d\n",
                                                 del_fltr->status);
                                        iavf_print_fdir_fltr(adapter, fdir);
                                }
                        }
                }
                spin_unlock_bh(&adapter->fdir_fltr_lock);
                }
                break;
        case VIRTCHNL_OP_ADD_RSS_CFG: {
                struct iavf_adv_rss *rss;

                spin_lock_bh(&adapter->adv_rss_lock);
                list_for_each_entry(rss, &adapter->adv_rss_list_head, list) {
                        if (rss->state == IAVF_ADV_RSS_ADD_PENDING) {
                                iavf_print_adv_rss_cfg(adapter, rss,
                                                       "Input set change for",
                                                       "successful");
                                rss->state = IAVF_ADV_RSS_ACTIVE;
                        }
                }
                spin_unlock_bh(&adapter->adv_rss_lock);
                }
                break;
        case VIRTCHNL_OP_DEL_RSS_CFG: {
                struct iavf_adv_rss *rss, *rss_tmp;

                spin_lock_bh(&adapter->adv_rss_lock);
                list_for_each_entry_safe(rss, rss_tmp,
                                         &adapter->adv_rss_list_head, list) {
                        if (rss->state == IAVF_ADV_RSS_DEL_PENDING) {
                                list_del(&rss->list);
                                kfree(rss);
                        }
                }
                spin_unlock_bh(&adapter->adv_rss_lock);
                }
                break;
        default:
                if (adapter->current_op && (v_opcode != adapter->current_op))
                        dev_warn(&adapter->pdev->dev, "Expected response %d from PF, received %d\n",
                                 adapter->current_op, v_opcode);
                break;
        } /* switch v_opcode */
        adapter->current_op = VIRTCHNL_OP_UNKNOWN;
}