Quelle  iavf_virtchnl.c   Sprache: C

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

#include <linux/net/intel/libie/rx.h>

#include "iavf.h"
#include "iavf_ptp.h"
#include "iavf_prototype.h"

/**
 * 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 status;

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

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

/**
 * 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_poll_virtchnl_msg
 * @hw: HW configuration structure
 * @event: event to populate on success
 * @op_to_poll: requested virtchnl op to poll for
 *
 * Initialize poll for virtchnl msg matching the requested_op. Returns 0
 * if a message of the correct opcode is in the queue or an error code
 * if no message matching the op code is waiting and other failures.
 */
static int
iavf_poll_virtchnl_msg(struct iavf_hw *hw, struct iavf_arq_event_info *event,
         enum virtchnl_ops op_to_poll)
{
 enum virtchnl_ops received_op;
 enum iavf_status status;
 u32 v_retval;

 while (1) {
  /* When the AQ is empty, iavf_clean_arq_element will return
 * nonzero and this loop will terminate.
 */
  status = iavf_clean_arq_element(hw, event, NULL);
  if (status != IAVF_SUCCESS)
   return iavf_status_to_errno(status);
  received_op =
      (enum virtchnl_ops)le32_to_cpu(event->desc.cookie_high);

  if (received_op == VIRTCHNL_OP_EVENT) {
   struct iavf_adapter *adapter = hw->back;
   struct virtchnl_pf_event *vpe =
    (struct virtchnl_pf_event *)event->msg_buf;

   if (vpe->event != VIRTCHNL_EVENT_RESET_IMPENDING)
    continue;

   dev_info(&adapter->pdev->dev, "Reset indication received from the PF\n");
   if (!(adapter->flags & IAVF_FLAG_RESET_PENDING))
    iavf_schedule_reset(adapter,
          IAVF_FLAG_RESET_PENDING);

   return -EIO;
  }

  if (op_to_poll == received_op)
   break;
 }

 v_retval = le32_to_cpu(event->desc.cookie_low);
 return virtchnl_status_to_errno((enum virtchnl_status_code)v_retval);
}

/**
 * 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 iavf_arq_event_info event;
 int err;

 event.buf_len = IAVF_MAX_AQ_BUF_SIZE;
 event.msg_buf = kzalloc(IAVF_MAX_AQ_BUF_SIZE, GFP_KERNEL);
 if (!event.msg_buf)
  return -ENOMEM;

 err = iavf_poll_virtchnl_msg(&adapter->hw, &event, VIRTCHNL_OP_VERSION);
 if (!err) {
  struct virtchnl_version_info *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;
 }

 kfree(event.msg_buf);

 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_TC_U32 |
        VIRTCHNL_VF_OFFLOAD_VLAN_V2 |
        VIRTCHNL_VF_OFFLOAD_RX_FLEX_DESC |
        VIRTCHNL_VF_OFFLOAD_CRC |
        VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM |
        VIRTCHNL_VF_OFFLOAD_REQ_QUEUES |
        VIRTCHNL_VF_CAP_PTP |
        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 |
        VIRTCHNL_VF_OFFLOAD_QOS;

 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);
}

int iavf_send_vf_offload_vlan_v2_msg(struct iavf_adapter *adapter)
{
 adapter->aq_required &= ~IAVF_FLAG_AQ_GET_OFFLOAD_VLAN_V2_CAPS;

 if (!VLAN_V2_ALLOWED(adapter))
  return -EOPNOTSUPP;

 adapter->current_op = VIRTCHNL_OP_GET_OFFLOAD_VLAN_V2_CAPS;

 return iavf_send_pf_msg(adapter, VIRTCHNL_OP_GET_OFFLOAD_VLAN_V2_CAPS,
    NULL, 0);
}

int iavf_send_vf_supported_rxdids_msg(struct iavf_adapter *adapter)
{
 adapter->aq_required &= ~IAVF_FLAG_AQ_GET_SUPPORTED_RXDIDS;

 if (!IAVF_RXDID_ALLOWED(adapter))
  return -EOPNOTSUPP;

 adapter->current_op = VIRTCHNL_OP_GET_SUPPORTED_RXDIDS;

 return iavf_send_pf_msg(adapter, VIRTCHNL_OP_GET_SUPPORTED_RXDIDS,
    NULL, 0);
}

/**
 * iavf_send_vf_ptp_caps_msg - Send request for PTP capabilities
 * @adapter: private adapter structure
 *
 * Send the VIRTCHNL_OP_1588_PTP_GET_CAPS command to the PF to request the PTP
 * capabilities available to this device. This includes the following
 * potential access:
 *
 * * READ_PHC - access to read the PTP hardware clock time
 * * RX_TSTAMP - access to request Rx timestamps on all received packets
 *
 * The PF will reply with the same opcode a filled out copy of the
 * virtchnl_ptp_caps structure which defines the specifics of which features
 * are accessible to this device.
 *
 * Return: 0 if success, error code otherwise.
 */
int iavf_send_vf_ptp_caps_msg(struct iavf_adapter *adapter)
{
 struct virtchnl_ptp_caps hw_caps = {
  .caps = VIRTCHNL_1588_PTP_CAP_READ_PHC |
   VIRTCHNL_1588_PTP_CAP_RX_TSTAMP
 };

 adapter->aq_required &= ~IAVF_FLAG_AQ_GET_PTP_CAPS;

 if (!IAVF_PTP_ALLOWED(adapter))
  return -EOPNOTSUPP;

 adapter->current_op = VIRTCHNL_OP_1588_PTP_GET_CAPS;

 return iavf_send_pf_msg(adapter, VIRTCHNL_OP_1588_PTP_GET_CAPS,
    (u8 *)&hw_caps, sizeof(hw_caps));
}

/**
 * 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;
 u16 len;
 int err;

 len = IAVF_VIRTCHNL_VF_RESOURCE_SIZE;
 event.buf_len = len;
 event.msg_buf = kzalloc(len, GFP_KERNEL);
 if (!event.msg_buf)
  return -ENOMEM;

 err = iavf_poll_virtchnl_msg(hw, &event, VIRTCHNL_OP_GET_VF_RESOURCES);
 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);

 kfree(event.msg_buf);

 return err;
}

int iavf_get_vf_vlan_v2_caps(struct iavf_adapter *adapter)
{
 struct iavf_arq_event_info event;
 int err;
 u16 len;

 len = sizeof(struct virtchnl_vlan_caps);
 event.buf_len = len;
 event.msg_buf = kzalloc(len, GFP_KERNEL);
 if (!event.msg_buf)
  return -ENOMEM;

 err = iavf_poll_virtchnl_msg(&adapter->hw, &event,
         VIRTCHNL_OP_GET_OFFLOAD_VLAN_V2_CAPS);
 if (!err)
  memcpy(&adapter->vlan_v2_caps, event.msg_buf,
         min(event.msg_len, len));

 kfree(event.msg_buf);

 return err;
}

int iavf_get_vf_supported_rxdids(struct iavf_adapter *adapter)
{
 struct iavf_arq_event_info event;
 u64 rxdids;
 int err;

 event.msg_buf = (u8 *)&rxdids;
 event.buf_len = sizeof(rxdids);

 err = iavf_poll_virtchnl_msg(&adapter->hw, &event,
         VIRTCHNL_OP_GET_SUPPORTED_RXDIDS);
 if (!err)
  adapter->supp_rxdids = rxdids;

 return err;
}

int iavf_get_vf_ptp_caps(struct iavf_adapter *adapter)
{
 struct virtchnl_ptp_caps caps = {};
 struct iavf_arq_event_info event;
 int err;

 event.msg_buf = (u8 *)∩︀
 event.buf_len = sizeof(caps);

 err = iavf_poll_virtchnl_msg(&adapter->hw, &event,
         VIRTCHNL_OP_1588_PTP_GET_CAPS);
 if (!err)
  adapter->ptp.hw_caps = caps;

 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;
 int pairs = adapter->num_active_queues;
 struct virtchnl_queue_pair_info *vqpi;
 u32 i, max_frame;
 u8 rx_flags = 0;
 size_t len;

 max_frame = LIBIE_MAX_RX_FRM_LEN(adapter->rx_rings->pp->p.offset);
 max_frame = min_not_zero(adapter->vf_res->max_mtu, max_frame);

 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 = virtchnl_struct_size(vqci, qpair, pairs);
 vqci = kzalloc(len, GFP_KERNEL);
 if (!vqci)
  return;

 if (iavf_ptp_cap_supported(adapter, VIRTCHNL_1588_PTP_CAP_RX_TSTAMP))
  rx_flags |= VIRTCHNL_PTP_RX_TSTAMP;

 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 = adapter->rx_rings[i].rx_buf_len;
  if (IAVF_RXDID_ALLOWED(adapter))
   vqpi->rxq.rxdid = adapter->rxdid;
  if (CRC_OFFLOAD_ALLOWED(adapter))
   vqpi->rxq.crc_disable = !!(adapter->netdev->features &
         NETIF_F_RXFCS);
  vqpi->rxq.flags = rx_flags;
  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 = virtchnl_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_set_mac_addr_type - Set the correct request type from the filter type
 * @virtchnl_ether_addr: pointer to requested list element
 * @filter: pointer to requested filter
 **/
static void
iavf_set_mac_addr_type(struct virtchnl_ether_addr *virtchnl_ether_addr,
         const struct iavf_mac_filter *filter)
{
 virtchnl_ether_addr->type = filter->is_primary ?
  VIRTCHNL_ETHER_ADDR_PRIMARY :
  VIRTCHNL_ETHER_ADDR_EXTRA;
}

/**
 * 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 = virtchnl_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");
  while (len > IAVF_MAX_AQ_BUF_SIZE)
   len = virtchnl_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);
   iavf_set_mac_addr_type(&veal->list[i], f);
   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 = virtchnl_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");
  while (len > IAVF_MAX_AQ_BUF_SIZE)
   len = virtchnl_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);
   iavf_set_mac_addr_type(&veal->list[i], f);
   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;
  if (!f->add && !f->add_handled)
   f->add_handled = true;
 }
 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->add && !f->add_handled)
   f->add_handled = true;

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

/**
 * iavf_vlan_add_reject
 * @adapter: adapter structure
 *
 * Remove VLAN filters from list based on PF response.
 **/
static void iavf_vlan_add_reject(struct iavf_adapter *adapter)
{
 struct iavf_vlan_filter *f, *ftmp;

 spin_lock_bh(&adapter->mac_vlan_list_lock);
 list_for_each_entry_safe(f, ftmp, &adapter->vlan_filter_list, list) {
  if (f->state == IAVF_VLAN_IS_NEW) {
   list_del(&f->list);
   kfree(f);
   adapter->num_vlan_filters--;
  }
 }
 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)
{
 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->state == IAVF_VLAN_ADD)
   count++;
 }
 if (!count || !VLAN_FILTERING_ALLOWED(adapter)) {
  adapter->aq_required &= ~IAVF_FLAG_AQ_ADD_VLAN_FILTER;
  spin_unlock_bh(&adapter->mac_vlan_list_lock);
  return;
 }

 if (VLAN_ALLOWED(adapter)) {
  struct virtchnl_vlan_filter_list *vvfl;

  adapter->current_op = VIRTCHNL_OP_ADD_VLAN;

  len = virtchnl_struct_size(vvfl, vlan_id, count);
  if (len > IAVF_MAX_AQ_BUF_SIZE) {
   dev_warn(&adapter->pdev->dev, "Too many add VLAN changes in one request\n");
   while (len > IAVF_MAX_AQ_BUF_SIZE)
    len = virtchnl_struct_size(vvfl, vlan_id,
          --count);
   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->state == IAVF_VLAN_ADD) {
    vvfl->vlan_id[i] = f->vlan.vid;
    i++;
    f->state = IAVF_VLAN_IS_NEW;
    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);
 } else {
  u16 max_vlans = adapter->vlan_v2_caps.filtering.max_filters;
  u16 current_vlans = iavf_get_num_vlans_added(adapter);
  struct virtchnl_vlan_filter_list_v2 *vvfl_v2;

  adapter->current_op = VIRTCHNL_OP_ADD_VLAN_V2;

  if ((count + current_vlans) > max_vlans &&
      current_vlans < max_vlans) {
   count = max_vlans - iavf_get_num_vlans_added(adapter);
   more = true;
  }

  len = virtchnl_struct_size(vvfl_v2, filters, count);
  if (len > IAVF_MAX_AQ_BUF_SIZE) {
   dev_warn(&adapter->pdev->dev, "Too many add VLAN changes in one request\n");
   while (len > IAVF_MAX_AQ_BUF_SIZE)
    len = virtchnl_struct_size(vvfl_v2, filters,
          --count);
   more = true;
  }

  vvfl_v2 = kzalloc(len, GFP_ATOMIC);
  if (!vvfl_v2) {
   spin_unlock_bh(&adapter->mac_vlan_list_lock);
   return;
  }

  vvfl_v2->vport_id = adapter->vsi_res->vsi_id;
  vvfl_v2->num_elements = count;
  list_for_each_entry(f, &adapter->vlan_filter_list, list) {
   if (f->state == IAVF_VLAN_ADD) {
    struct virtchnl_vlan_supported_caps *filtering_support =
     &adapter->vlan_v2_caps.filtering.filtering_support;
    struct virtchnl_vlan *vlan;

    if (i == count)
     break;

    /* give priority over outer if it's enabled */
    if (filtering_support->outer)
     vlan = &vvfl_v2->filters[i].outer;
    else
     vlan = &vvfl_v2->filters[i].inner;

    vlan->tci = f->vlan.vid;
    vlan->tpid = f->vlan.tpid;

    i++;
    f->state = IAVF_VLAN_IS_NEW;
   }
  }

  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_V2,
     (u8 *)vvfl_v2, len);
  kfree(vvfl_v2);
 }
}

/**
 * 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 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_safe(f, ftmp, &adapter->vlan_filter_list, list) {
  /* since VLAN capabilities are not allowed, we dont want to send
 * a VLAN delete request because it will most likely fail and
 * create unnecessary errors/noise, so just free the VLAN
 * filters marked for removal to enable bailing out before
 * sending a virtchnl message
 */
  if (f->state == IAVF_VLAN_REMOVE &&
      !VLAN_FILTERING_ALLOWED(adapter)) {
   list_del(&f->list);
   kfree(f);
   adapter->num_vlan_filters--;
  } else if (f->state == IAVF_VLAN_DISABLE &&
      !VLAN_FILTERING_ALLOWED(adapter)) {
   f->state = IAVF_VLAN_INACTIVE;
  } else if (f->state == IAVF_VLAN_REMOVE ||
      f->state == IAVF_VLAN_DISABLE) {
   count++;
  }
 }
 if (!count || !VLAN_FILTERING_ALLOWED(adapter)) {
  adapter->aq_required &= ~IAVF_FLAG_AQ_DEL_VLAN_FILTER;
  spin_unlock_bh(&adapter->mac_vlan_list_lock);
  return;
 }

 if (VLAN_ALLOWED(adapter)) {
  struct virtchnl_vlan_filter_list *vvfl;

  adapter->current_op = VIRTCHNL_OP_DEL_VLAN;

  len = virtchnl_struct_size(vvfl, vlan_id, count);
  if (len > IAVF_MAX_AQ_BUF_SIZE) {
   dev_warn(&adapter->pdev->dev, "Too many delete VLAN changes in one request\n");
   while (len > IAVF_MAX_AQ_BUF_SIZE)
    len = virtchnl_struct_size(vvfl, vlan_id,
          --count);
   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->state == IAVF_VLAN_DISABLE) {
    vvfl->vlan_id[i] = f->vlan.vid;
    f->state = IAVF_VLAN_INACTIVE;
    i++;
    if (i == count)
     break;
   } else if (f->state == IAVF_VLAN_REMOVE) {
    vvfl->vlan_id[i] = f->vlan.vid;
    list_del(&f->list);
    kfree(f);
    adapter->num_vlan_filters--;
    i++;
    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);
 } else {
  struct virtchnl_vlan_filter_list_v2 *vvfl_v2;

  adapter->current_op = VIRTCHNL_OP_DEL_VLAN_V2;

  len = virtchnl_struct_size(vvfl_v2, filters, count);
  if (len > IAVF_MAX_AQ_BUF_SIZE) {
   dev_warn(&adapter->pdev->dev, "Too many add VLAN changes in one request\n");
   while (len > IAVF_MAX_AQ_BUF_SIZE)
    len = virtchnl_struct_size(vvfl_v2, filters,
          --count);
   more = true;
  }

  vvfl_v2 = kzalloc(len, GFP_ATOMIC);
  if (!vvfl_v2) {
   spin_unlock_bh(&adapter->mac_vlan_list_lock);
   return;
  }

  vvfl_v2->vport_id = adapter->vsi_res->vsi_id;
  vvfl_v2->num_elements = count;
  list_for_each_entry_safe(f, ftmp, &adapter->vlan_filter_list, list) {
   if (f->state == IAVF_VLAN_DISABLE ||
       f->state == IAVF_VLAN_REMOVE) {
    struct virtchnl_vlan_supported_caps *filtering_support =
     &adapter->vlan_v2_caps.filtering.filtering_support;
    struct virtchnl_vlan *vlan;

    /* give priority over outer if it's enabled */
    if (filtering_support->outer)
     vlan = &vvfl_v2->filters[i].outer;
    else
     vlan = &vvfl_v2->filters[i].inner;

    vlan->tci = f->vlan.vid;
    vlan->tpid = f->vlan.tpid;

    if (f->state == IAVF_VLAN_DISABLE) {
     f->state = IAVF_VLAN_INACTIVE;
    } else {
     list_del(&f->list);
     kfree(f);
     adapter->num_vlan_filters--;
    }
    i++;
    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_V2,
     (u8 *)vvfl_v2, len);
  kfree(vvfl_v2);
 }
}

/**
 * iavf_set_promiscuous
 * @adapter: adapter structure
 *
 * Request that the PF enable promiscuous mode for our VSI.
 **/
void iavf_set_promiscuous(struct iavf_adapter *adapter)
{
 struct net_device *netdev = adapter->netdev;
 struct virtchnl_promisc_info vpi;
 unsigned int flags;

 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;
 }

 /* prevent changes to promiscuous flags */
 spin_lock_bh(&adapter->current_netdev_promisc_flags_lock);

 /* sanity check to prevent duplicate AQ calls */
 if (!iavf_promiscuous_mode_changed(adapter)) {
  adapter->aq_required &= ~IAVF_FLAG_AQ_CONFIGURE_PROMISC_MODE;
  dev_dbg(&adapter->pdev->dev, "No change in promiscuous mode\n");
  /* allow changes to promiscuous flags */
  spin_unlock_bh(&adapter->current_netdev_promisc_flags_lock);
  return;
 }

 /* there are 2 bits, but only 3 states */
 if (!(netdev->flags & IFF_PROMISC) &&
     netdev->flags & IFF_ALLMULTI) {
  /* State 1  - only multicast promiscuous mode enabled
 * - !IFF_PROMISC && IFF_ALLMULTI
 */
  flags = FLAG_VF_MULTICAST_PROMISC;
  adapter->current_netdev_promisc_flags |= IFF_ALLMULTI;
  adapter->current_netdev_promisc_flags &= ~IFF_PROMISC;
  dev_info(&adapter->pdev->dev, "Entering multicast promiscuous mode\n");
 } else if (!(netdev->flags & IFF_PROMISC) &&
     !(netdev->flags & IFF_ALLMULTI)) {
  /* State 2 - unicast/multicast promiscuous mode disabled
 * - !IFF_PROMISC && !IFF_ALLMULTI
 */
  flags = 0;
  adapter->current_netdev_promisc_flags &=
   ~(IFF_PROMISC | IFF_ALLMULTI);
  dev_info(&adapter->pdev->dev, "Leaving promiscuous mode\n");
 } else {
  /* State 3 - unicast/multicast promiscuous mode enabled
 * - IFF_PROMISC && IFF_ALLMULTI
 * - IFF_PROMISC && !IFF_ALLMULTI
 */
  flags = FLAG_VF_UNICAST_PROMISC | FLAG_VF_MULTICAST_PROMISC;
  adapter->current_netdev_promisc_flags |= IFF_PROMISC;
  if (netdev->flags & IFF_ALLMULTI)
   adapter->current_netdev_promisc_flags |= IFF_ALLMULTI;
  else
   adapter->current_netdev_promisc_flags &= ~IFF_ALLMULTI;

  dev_info(&adapter->pdev->dev, "Entering promiscuous mode\n");
 }

 adapter->aq_required &= ~IAVF_FLAG_AQ_CONFIGURE_PROMISC_MODE;

 /* allow changes to promiscuous flags */
 spin_unlock_bh(&adapter->current_netdev_promisc_flags_lock);

 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->aq_required &= ~IAVF_FLAG_AQ_REQUEST_STATS;
 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_rss_hashcfg
 * @adapter: adapter structure
 *
 * Request RSS Hash enable bits from PF
 **/
void iavf_get_rss_hashcfg(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_HASHCFG_CAPS;
 adapter->aq_required &= ~IAVF_FLAG_AQ_GET_RSS_HASHCFG;
 iavf_send_pf_msg(adapter, VIRTCHNL_OP_GET_RSS_HASHCFG_CAPS, NULL, 0);
}

/**
 * iavf_set_rss_hashcfg
 * @adapter: adapter structure
 *
 * Request the PF to set our RSS hash capabilities
 **/
void iavf_set_rss_hashcfg(struct iavf_adapter *adapter)
{
 struct virtchnl_rss_hashcfg 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.hashcfg = adapter->rss_hashcfg;
 adapter->current_op = VIRTCHNL_OP_SET_RSS_HASHCFG;
 adapter->aq_required &= ~IAVF_FLAG_AQ_SET_RSS_HASHCFG;
 iavf_send_pf_msg(adapter, VIRTCHNL_OP_SET_RSS_HASHCFG, (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 = virtchnl_struct_size(vrk, key, adapter->rss_key_size);
 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 = virtchnl_struct_size(vrl, lut, adapter->rss_lut_size);
 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_set_rss_hfunc
 * @adapter: adapter structure
 *
 * Request the PF to set our RSS Hash function
 **/
void iavf_set_rss_hfunc(struct iavf_adapter *adapter)
{
 struct virtchnl_rss_hfunc *vrh;
 int len = sizeof(*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 function, command %d pending\n",
   adapter->current_op);
  return;
 }
 vrh = kzalloc(len, GFP_KERNEL);
 if (!vrh)
  return;
 vrh->vsi_id = adapter->vsi.id;
 vrh->rss_algorithm = adapter->hfunc;
 adapter->current_op = VIRTCHNL_OP_CONFIG_RSS_HFUNC;
 adapter->aq_required &= ~IAVF_FLAG_AQ_SET_RSS_HFUNC;
 iavf_send_pf_msg(adapter, VIRTCHNL_OP_CONFIG_RSS_HFUNC, (u8 *)vrh, len);
 kfree(vrh);
}

/**
 * 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);
}

/**
 * iavf_tpid_to_vc_ethertype - transform from VLAN TPID to virtchnl ethertype
 * @tpid: VLAN TPID (i.e. 0x8100, 0x88a8, etc.)
 */
static u32 iavf_tpid_to_vc_ethertype(u16 tpid)
{
 switch (tpid) {
 case ETH_P_8021Q:
  return VIRTCHNL_VLAN_ETHERTYPE_8100;
 case ETH_P_8021AD:
  return VIRTCHNL_VLAN_ETHERTYPE_88A8;
 }

 return 0;
}

/**
 * iavf_set_vc_offload_ethertype - set virtchnl ethertype for offload message
 * @adapter: adapter structure
 * @msg: message structure used for updating offloads over virtchnl to update
 * @tpid: VLAN TPID (i.e. 0x8100, 0x88a8, etc.)
 * @offload_op: opcode used to determine which support structure to check
 */
static int
iavf_set_vc_offload_ethertype(struct iavf_adapter *adapter,
         struct virtchnl_vlan_setting *msg, u16 tpid,
         enum virtchnl_ops offload_op)
{
 struct virtchnl_vlan_supported_caps *offload_support;
 u16 vc_ethertype = iavf_tpid_to_vc_ethertype(tpid);

 /* reference the correct offload support structure */
 switch (offload_op) {
 case VIRTCHNL_OP_ENABLE_VLAN_STRIPPING_V2:
 case VIRTCHNL_OP_DISABLE_VLAN_STRIPPING_V2:
  offload_support =
   &adapter->vlan_v2_caps.offloads.stripping_support;
  break;
 case VIRTCHNL_OP_ENABLE_VLAN_INSERTION_V2:
 case VIRTCHNL_OP_DISABLE_VLAN_INSERTION_V2:
  offload_support =
   &adapter->vlan_v2_caps.offloads.insertion_support;
  break;
 default:
  dev_err(&adapter->pdev->dev, "Invalid opcode %d for setting virtchnl ethertype to enable/disable VLAN offloads\n",
   offload_op);
  return -EINVAL;
 }

 /* make sure ethertype is supported */
 if (offload_support->outer & vc_ethertype &&
     offload_support->outer & VIRTCHNL_VLAN_TOGGLE) {
  msg->outer_ethertype_setting = vc_ethertype;
 } else if (offload_support->inner & vc_ethertype &&
     offload_support->inner & VIRTCHNL_VLAN_TOGGLE) {
  msg->inner_ethertype_setting = vc_ethertype;
 } else {
  dev_dbg(&adapter->pdev->dev, "opcode %d unsupported for VLAN TPID 0x%04x\n",
   offload_op, tpid);
  return -EINVAL;
 }

 return 0;
}

/**
 * iavf_clear_offload_v2_aq_required - clear AQ required bit for offload request
 * @adapter: adapter structure
 * @tpid: VLAN TPID
 * @offload_op: opcode used to determine which AQ required bit to clear
 */
static void
iavf_clear_offload_v2_aq_required(struct iavf_adapter *adapter, u16 tpid,
      enum virtchnl_ops offload_op)
{
 switch (offload_op) {
 case VIRTCHNL_OP_ENABLE_VLAN_STRIPPING_V2:
  if (tpid == ETH_P_8021Q)
   adapter->aq_required &=
    ~IAVF_FLAG_AQ_ENABLE_CTAG_VLAN_STRIPPING;
  else if (tpid == ETH_P_8021AD)
   adapter->aq_required &=
    ~IAVF_FLAG_AQ_ENABLE_STAG_VLAN_STRIPPING;
  break;
 case VIRTCHNL_OP_DISABLE_VLAN_STRIPPING_V2:
  if (tpid == ETH_P_8021Q)
   adapter->aq_required &=
    ~IAVF_FLAG_AQ_DISABLE_CTAG_VLAN_STRIPPING;
  else if (tpid == ETH_P_8021AD)
   adapter->aq_required &=
    ~IAVF_FLAG_AQ_DISABLE_STAG_VLAN_STRIPPING;
  break;
 case VIRTCHNL_OP_ENABLE_VLAN_INSERTION_V2:
  if (tpid == ETH_P_8021Q)
   adapter->aq_required &=
    ~IAVF_FLAG_AQ_ENABLE_CTAG_VLAN_INSERTION;
  else if (tpid == ETH_P_8021AD)
   adapter->aq_required &=
    ~IAVF_FLAG_AQ_ENABLE_STAG_VLAN_INSERTION;
  break;
 case VIRTCHNL_OP_DISABLE_VLAN_INSERTION_V2:
  if (tpid == ETH_P_8021Q)
   adapter->aq_required &=
    ~IAVF_FLAG_AQ_DISABLE_CTAG_VLAN_INSERTION;
  else if (tpid == ETH_P_8021AD)
   adapter->aq_required &=
    ~IAVF_FLAG_AQ_DISABLE_STAG_VLAN_INSERTION;
  break;
 default:
  dev_err(&adapter->pdev->dev, "Unsupported opcode %d specified for clearing aq_required bits for VIRTCHNL_VF_OFFLOAD_VLAN_V2 offload request\n",
   offload_op);
 }
}

/**
 * iavf_send_vlan_offload_v2 - send offload enable/disable over virtchnl
 * @adapter: adapter structure
 * @tpid: VLAN TPID used for the command (i.e. 0x8100 or 0x88a8)
 * @offload_op: offload_op used to make the request over virtchnl
 */
static void
iavf_send_vlan_offload_v2(struct iavf_adapter *adapter, u16 tpid,
     enum virtchnl_ops offload_op)
{
 struct virtchnl_vlan_setting *msg;
 int len = sizeof(*msg);

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

 adapter->current_op = offload_op;

 msg = kzalloc(len, GFP_KERNEL);
 if (!msg)
  return;

 msg->vport_id = adapter->vsi_res->vsi_id;

 /* always clear to prevent unsupported and endless requests */
 iavf_clear_offload_v2_aq_required(adapter, tpid, offload_op);

 /* only send valid offload requests */
 if (!iavf_set_vc_offload_ethertype(adapter, msg, tpid, offload_op))
  iavf_send_pf_msg(adapter, offload_op, (u8 *)msg, len);
 else
  adapter->current_op = VIRTCHNL_OP_UNKNOWN;

 kfree(msg);
}

/**
 * iavf_enable_vlan_stripping_v2 - enable VLAN stripping
 * @adapter: adapter structure
 * @tpid: VLAN TPID used to enable VLAN stripping
 */
void iavf_enable_vlan_stripping_v2(struct iavf_adapter *adapter, u16 tpid)
{
 iavf_send_vlan_offload_v2(adapter, tpid,
      VIRTCHNL_OP_ENABLE_VLAN_STRIPPING_V2);
}

/**
 * iavf_disable_vlan_stripping_v2 - disable VLAN stripping
 * @adapter: adapter structure
 * @tpid: VLAN TPID used to disable VLAN stripping
 */
void iavf_disable_vlan_stripping_v2(struct iavf_adapter *adapter, u16 tpid)
{
 iavf_send_vlan_offload_v2(adapter, tpid,
      VIRTCHNL_OP_DISABLE_VLAN_STRIPPING_V2);
}

/**
 * iavf_enable_vlan_insertion_v2 - enable VLAN insertion
 * @adapter: adapter structure
 * @tpid: VLAN TPID used to enable VLAN insertion
 */
void iavf_enable_vlan_insertion_v2(struct iavf_adapter *adapter, u16 tpid)
{
 iavf_send_vlan_offload_v2(adapter, tpid,
      VIRTCHNL_OP_ENABLE_VLAN_INSERTION_V2);
}

/**
 * iavf_disable_vlan_insertion_v2 - disable VLAN insertion
 * @adapter: adapter structure
 * @tpid: VLAN TPID used to disable VLAN insertion
 */
void iavf_disable_vlan_insertion_v2(struct iavf_adapter *adapter, u16 tpid)
{
 iavf_send_vlan_offload_v2(adapter, tpid,
      VIRTCHNL_OP_DISABLE_VLAN_INSERTION_V2);
}

#if IS_ENABLED(CONFIG_PTP_1588_CLOCK)
/**
 * iavf_virtchnl_send_ptp_cmd - Send one queued PTP command
 * @adapter: adapter private structure
 *
 * De-queue one PTP command request and send the command message to the PF.
 * Clear IAVF_FLAG_AQ_SEND_PTP_CMD if no more messages are left to send.
 */
void iavf_virtchnl_send_ptp_cmd(struct iavf_adapter *adapter)
{
 struct iavf_ptp_aq_cmd *cmd;
 int err;

 if (!adapter->ptp.clock) {
  /* This shouldn't be possible to hit, since no messages should
 * be queued if PTP is not initialized.
 */
  pci_err(adapter->pdev, "PTP is not initialized\n");
  adapter->aq_required &= ~IAVF_FLAG_AQ_SEND_PTP_CMD;
  return;
 }

 mutex_lock(&adapter->ptp.aq_cmd_lock);
 cmd = list_first_entry_or_null(&adapter->ptp.aq_cmds,
           struct iavf_ptp_aq_cmd, list);
 if (!cmd) {
  /* no further PTP messages to send */
  adapter->aq_required &= ~IAVF_FLAG_AQ_SEND_PTP_CMD;
  goto out_unlock;
 }

 if (adapter->current_op != VIRTCHNL_OP_UNKNOWN) {
  /* bail because we already have a command pending */
  pci_err(adapter->pdev,
   "Cannot send PTP command %d, command %d pending\n",
   cmd->v_opcode, adapter->current_op);
  goto out_unlock;
 }

 err = iavf_send_pf_msg(adapter, cmd->v_opcode, cmd->msg, cmd->msglen);
 if (!err) {
  /* Command was sent without errors, so we can remove it from
 * the list and discard it.
 */
  list_del(&cmd->list);
  kfree(cmd);
 } else {
  /* We failed to send the command, try again next cycle */
  pci_err(adapter->pdev, "Failed to send PTP command %d\n",
   cmd->v_opcode);
 }

 if (list_empty(&adapter->ptp.aq_cmds))
  /* no further PTP messages to send */
  adapter->aq_required &= ~IAVF_FLAG_AQ_SEND_PTP_CMD;

out_unlock:
 mutex_unlock(&adapter->ptp.aq_cmd_lock);
}
#endif /* IS_ENABLED(CONFIG_PTP_1588_CLOCK) */

/**
 * 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;
 }

 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) {
   speed = kasprintf(GFP_KERNEL, "%s", "2.5 Gbps");
  } else {
   /* convert to Gbps inline */
   speed = kasprintf(GFP_KERNEL, "%d Gbps",
       link_speed_mbps / 1000);
  }
 } else if (link_speed_mbps == SPEED_UNKNOWN) {
  speed = kasprintf(GFP_KERNEL, "%s", "Unknown Mbps");
 } else {
  speed = kasprintf(GFP_KERNEL, "%d Mbps", link_speed_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_get_qos_caps - get qos caps support
 * @adapter: iavf adapter struct instance
 *
 * This function requests PF for Supported QoS Caps.
 */
void iavf_get_qos_caps(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 qos caps, command %d pending\n",
   adapter->current_op);
  return;
 }

 adapter->current_op = VIRTCHNL_OP_GET_QOS_CAPS;
 adapter->aq_required &= ~IAVF_FLAG_AQ_GET_QOS_CAPS;
 iavf_send_pf_msg(adapter, VIRTCHNL_OP_GET_QOS_CAPS, NULL, 0);
}

/**
 * iavf_set_quanta_size - set quanta size of queue chunk
 * @adapter: iavf adapter struct instance
 * @quanta_size: quanta size in bytes
 * @queue_index: starting index of queue chunk
 * @num_queues: number of queues in the queue chunk
 *
 * This function requests PF to set quanta size of queue chunk
 * starting at queue_index.
 */
static void
iavf_set_quanta_size(struct iavf_adapter *adapter, u16 quanta_size,
       u16 queue_index, u16 num_queues)
{
 struct virtchnl_quanta_cfg quanta_cfg;

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

 adapter->current_op = VIRTCHNL_OP_CONFIG_QUANTA;
 quanta_cfg.quanta_size = quanta_size;
 quanta_cfg.queue_select.type = VIRTCHNL_QUEUE_TYPE_TX;
 quanta_cfg.queue_select.start_queue_id = queue_index;
 quanta_cfg.queue_select.num_queues = num_queues;
 adapter->aq_required &= ~IAVF_FLAG_AQ_CFG_QUEUES_QUANTA_SIZE;
 iavf_send_pf_msg(adapter, VIRTCHNL_OP_CONFIG_QUANTA,
    (u8 *)&quanta_cfg, sizeof(quanta_cfg));
}

/**
 * iavf_cfg_queues_quanta_size - configure quanta size of queues
 * @adapter: adapter structure
 *
 * Request that the PF configure quanta size of allocated queues.
 **/
void iavf_cfg_queues_quanta_size(struct iavf_adapter *adapter)
{
 int quanta_size = IAVF_DEFAULT_QUANTA_SIZE;

 /* Set Queue Quanta Size to default */
 iavf_set_quanta_size(adapter, quanta_size, 0,
        adapter->num_active_queues);
}

/**
 * iavf_cfg_queues_bw - configure bandwidth of allocated queues
 * @adapter: iavf adapter structure instance
 *
 * This function requests PF to configure queue bandwidth of allocated queues
 */
void iavf_cfg_queues_bw(struct iavf_adapter *adapter)
{
 struct virtchnl_queues_bw_cfg *qs_bw_cfg;
 struct net_shaper *q_shaper;
 int qs_to_update = 0;
 int i, inx = 0;
 size_t len;

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

 for (i = 0; i < adapter->num_active_queues; i++) {
  if (adapter->tx_rings[i].q_shaper_update)
   qs_to_update++;
 }
 len = struct_size(qs_bw_cfg, cfg, qs_to_update);
 qs_bw_cfg = kzalloc(len, GFP_KERNEL);
 if (!qs_bw_cfg)
  return;

 qs_bw_cfg->vsi_id = adapter->vsi.id;
 qs_bw_cfg->num_queues = qs_to_update;

 for (i = 0; i < adapter->num_active_queues; i++) {
  struct iavf_ring *tx_ring = &adapter->tx_rings[i];

  q_shaper = &tx_ring->q_shaper;
  if (tx_ring->q_shaper_update) {
   qs_bw_cfg->cfg[inx].queue_id = i;
   qs_bw_cfg->cfg[inx].shaper.peak = q_shaper->bw_max;
   qs_bw_cfg->cfg[inx].shaper.committed = q_shaper->bw_min;
   qs_bw_cfg->cfg[inx].tc = 0;
   inx++;
  }
 }

 adapter->current_op = VIRTCHNL_OP_CONFIG_QUEUE_BW;
 adapter->aq_required &= ~IAVF_FLAG_AQ_CONFIGURE_QUEUES_BW;
 iavf_send_pf_msg(adapter, VIRTCHNL_OP_CONFIG_QUEUE_BW,
    (u8 *)qs_bw_cfg, len);
 kfree(qs_bw_cfg);
}

/**
 * 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 = virtchnl_struct_size(vti, list, adapter->num_tc);
 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 virtchnl_fdir_del f = {};
 struct iavf_fdir_fltr *fdir;
 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;
   f.vsi_id = fdir->vc_add_msg.vsi_id;
   f.flow_id = fdir->flow_id;
   fdir->state = IAVF_FDIR_FLTR_DEL_PENDING;
   break;
  } else if (fdir->state == IAVF_FDIR_FLTR_DIS_REQUEST) {
   process_fltr = true;
   f.vsi_id = fdir->vc_add_msg.vsi_id;
   f.flow_id = fdir->flow_id;
   fdir->state = IAVF_FDIR_FLTR_DIS_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.
 **/
int iavf_request_reset(struct iavf_adapter *adapter)
{
 int err;
 /* Don't check CURRENT_OP - this is always higher priority */
 err = iavf_send_pf_msg(adapter, VIRTCHNL_OP_RESET_VF, NULL, 0);
 adapter->current_op = VIRTCHNL_OP_UNKNOWN;
 return err;
}

/**
 * iavf_netdev_features_vlan_strip_set - update vlan strip status
 * @netdev: ptr to netdev being adjusted
 * @enable: enable or disable vlan strip
 *
 * Helper function to change vlan strip status in netdev->features.
 */
static void iavf_netdev_features_vlan_strip_set(struct net_device *netdev,
      const bool enable)
{
 if (enable)
  netdev->features |= NETIF_F_HW_VLAN_CTAG_RX;
 else
  netdev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
}

/**
 * iavf_activate_fdir_filters - Reactivate all FDIR filters after a reset
 * @adapter: private adapter structure
 *
 * Called after a reset to re-add all FDIR filters and delete some of them
 * if they were pending to be deleted.
 */
static void iavf_activate_fdir_filters(struct iavf_adapter *adapter)
{
 struct iavf_fdir_fltr *f, *ftmp;
 bool add_filters = false;

 spin_lock_bh(&adapter->fdir_fltr_lock);
 list_for_each_entry_safe(f, ftmp, &adapter->fdir_list_head, list) {
  if (f->state == IAVF_FDIR_FLTR_ADD_REQUEST ||
      f->state == IAVF_FDIR_FLTR_ADD_PENDING ||
      f->state == IAVF_FDIR_FLTR_ACTIVE) {
   /* All filters and requests have been removed in PF,
 * restore them
 */
   f->state = IAVF_FDIR_FLTR_ADD_REQUEST;
   add_filters = true;
  } else if (f->state == IAVF_FDIR_FLTR_DIS_REQUEST ||
      f->state == IAVF_FDIR_FLTR_DIS_PENDING) {
   /* Link down state, leave filters as inactive */
   f->state = IAVF_FDIR_FLTR_INACTIVE;
  } else if (f->state == IAVF_FDIR_FLTR_DEL_REQUEST ||
      f->state == IAVF_FDIR_FLTR_DEL_PENDING) {
   /* Delete filters that were pending to be deleted, the
 * list on PF is already cleared after a reset
 */
   list_del(&f->list);
   iavf_dec_fdir_active_fltr(adapter, f);
   kfree(f);
  }
 }
 spin_unlock_bh(&adapter->fdir_fltr_lock);

 if (add_filters)
  adapter->aq_required |= IAVF_FLAG_AQ_ADD_FDIR_FILTER;
}

/**
 * iavf_virtchnl_ptp_get_time - Respond to VIRTCHNL_OP_1588_PTP_GET_TIME
 * @adapter: private adapter structure
 * @data: the message from the PF
 * @len: length of the message from the PF
 *
 * Handle the VIRTCHNL_OP_1588_PTP_GET_TIME message from the PF. This message
 * is sent by the PF in response to the same op as a request from the VF.
 * Extract the 64bit nanoseconds time from the message and store it in
 * cached_phc_time. Then, notify any thread that is waiting for the update via
 * the wait queue.
 */
static void iavf_virtchnl_ptp_get_time(struct iavf_adapter *adapter,
           void *data, u16 len)
{
 struct virtchnl_phc_time *msg = data;

 if (len != sizeof(*msg)) {
  dev_err_once(&adapter->pdev->dev,
        "Invalid VIRTCHNL_OP_1588_PTP_GET_TIME from PF. Got size %u, expected %zu\n",
        len, sizeof(*msg));
  return;
 }

 adapter->ptp.cached_phc_time = msg->time;
 adapter->ptp.cached_phc_updated = jiffies;
 adapter->ptp.phc_time_ready = true;

 wake_up(&adapter->ptp.phc_time_waitqueue);
}

/**
 * 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)
{
--> --------------------

--> maximum size reached

--> --------------------