/*
 * Copyright (c) 2015 Cisco and/or its affiliates.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#include <vnet/vnet.h>
#include <vppinfra/vec.h>
#include <vppinfra/error.h>
#include <vppinfra/format.h>
#include <vppinfra/bitmap.h>
#include <vppinfra/linux/sysfs.h>
#include <vlib/unix/unix.h>
#include <vlib/log.h>

#include <vnet/ethernet/ethernet.h>
#include <vnet/interface/rx_queue_funcs.h>
#include <dpdk/buffer.h>
#include <dpdk/device/dpdk.h>
#include <dpdk/cryptodev/cryptodev.h>
#include <vlib/pci/pci.h>
#include <vlib/vmbus/vmbus.h>

#include <rte_ring.h>
#include <rte_vect.h>

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/mount.h>
#include <string.h>
#include <fcntl.h>
#include <dirent.h>

#include <dpdk/device/dpdk_priv.h>

#define ETHER_MAX_LEN   1518  /**< Maximum frame len, including CRC. */

dpdk_main_t dpdk_main;
dpdk_config_main_t dpdk_config_main;

#define LINK_STATE_ELOGS	0

/* Port configuration, mildly modified Intel app values */

static dpdk_port_type_t
port_type_from_speed_capa (struct rte_eth_dev_info *dev_info)
{

  if (dev_info->speed_capa & ETH_LINK_SPEED_100G)
    return VNET_DPDK_PORT_TYPE_ETH_100G;
  else if (dev_info->speed_capa & ETH_LINK_SPEED_56G)
    return VNET_DPDK_PORT_TYPE_ETH_56G;
  else if (dev_info->speed_capa & ETH_LINK_SPEED_50G)
    return VNET_DPDK_PORT_TYPE_ETH_50G;
  else if (dev_info->speed_capa & ETH_LINK_SPEED_40G)
    return VNET_DPDK_PORT_TYPE_ETH_40G;
  else if (dev_info->speed_capa & ETH_LINK_SPEED_25G)
    return VNET_DPDK_PORT_TYPE_ETH_25G;
  else if (dev_info->speed_capa & ETH_LINK_SPEED_20G)
    return VNET_DPDK_PORT_TYPE_ETH_20G;
  else if (dev_info->speed_capa & ETH_LINK_SPEED_10G)
    return VNET_DPDK_PORT_TYPE_ETH_10G;
  else if (dev_info->speed_capa & ETH_LINK_SPEED_5G)
    return VNET_DPDK_PORT_TYPE_ETH_5G;
  else if (dev_info->speed_capa & ETH_LINK_SPEED_2_5G)
    return VNET_DPDK_PORT_TYPE_ETH_2_5G;
  else if (dev_info->speed_capa & ETH_LINK_SPEED_1G)
    return VNET_DPDK_PORT_TYPE_ETH_1G;

  return VNET_DPDK_PORT_TYPE_UNKNOWN;
}

static u32
dpdk_flag_change (vnet_main_t * vnm, vnet_hw_interface_t * hi, u32 flags)
{
  dpdk_main_t *dm = &dpdk_main;
  dpdk_device_t *xd = vec_elt_at_index (dm->devices, hi->dev_instance);
  u32 old = (xd->flags & DPDK_DEVICE_FLAG_PROMISC) != 0;

  switch (flags)
    {
    case ETHERNET_INTERFACE_FLAG_DEFAULT_L3:
      /* set to L3/non-promisc mode */
      xd->flags &= ~DPDK_DEVICE_FLAG_PROMISC;
      break;
    case ETHERNET_INTERFACE_FLAG_ACCEPT_ALL:
      xd->flags |= DPDK_DEVICE_FLAG_PROMISC;
      break;
    case ETHERNET_INTERFACE_FLAG_MTU:
      if (xd->flags & DPDK_DEVICE_FLAG_ADMIN_UP)
	rte_eth_dev_stop (xd->port_id);
      rte_eth_dev_set_mtu (xd->port_id, hi->max_packet_bytes);
      if (xd->flags & DPDK_DEVICE_FLAG_ADMIN_UP)
	rte_eth_dev_start (xd->port_id);
      dpdk_log_debug ("[%u] mtu changed to %u", xd->port_id,
		      hi->max_packet_bytes);
      return 0;
    default:
      return ~0;
    }

  if (xd->flags & DPDK_DEVICE_FLAG_ADMIN_UP)
    {
      if (xd->flags & DPDK_DEVICE_FLAG_PROMISC)
	rte_eth_promiscuous_enable (xd->port_id);
      else
	rte_eth_promiscuous_disable (xd->port_id);
    }

  return old;
}

/* The function check_l3cache helps check if Level 3 cache exists or not on current CPUs
  return value 1: exist.
  return value 0: not exist.
*/
static int
check_l3cache ()
{

  struct dirent *dp;
  clib_error_t *err;
  const char *sys_cache_dir = "/sys/devices/system/cpu/cpu0/cache";
  DIR *dir_cache = opendir (sys_cache_dir);

  if (dir_cache == NULL)
    return -1;

  while ((dp = readdir (dir_cache)) != NULL)
    {
      if (dp->d_type == DT_DIR)
	{
	  u8 *p = NULL;
	  int level_cache = -1;

	  p = format (p, "%s/%s/%s%c", sys_cache_dir, dp->d_name, "level", 0);
	  if ((err = clib_sysfs_read ((char *) p, "%d", &level_cache)))
	    clib_error_free (err);

	  if (level_cache == 3)
	    {
	      closedir (dir_cache);
	      return 1;
	    }
	}
    }

  if (dir_cache != NULL)
    closedir (dir_cache);

  return 0;
}

static void
dpdk_enable_l4_csum_offload (dpdk_device_t * xd)
{
  xd->port_conf.txmode.offloads |= DEV_TX_OFFLOAD_TCP_CKSUM;
  xd->port_conf.txmode.offloads |= DEV_TX_OFFLOAD_UDP_CKSUM;
  xd->flags |= DPDK_DEVICE_FLAG_TX_OFFLOAD |
    DPDK_DEVICE_FLAG_INTEL_PHDR_CKSUM;
}

static clib_error_t *
dpdk_lib_init (dpdk_main_t * dm)
{
  vnet_main_t *vnm = vnet_get_main ();
  u32 nports;
  u16 port_id;
  vlib_main_t *vm = vlib_get_main ();
  vlib_thread_main_t *tm = vlib_get_thread_main ();
  vnet_device_main_t *vdm = &vnet_device_main;
  vnet_sw_interface_t *sw;
  vnet_hw_interface_t *hi;
  dpdk_device_t *xd;
  vlib_pci_addr_t last_pci_addr;
  u32 last_pci_addr_port = 0;
  last_pci_addr.as_u32 = ~0;

  nports = rte_eth_dev_count_avail ();

  if (nports < 1)
    {
      dpdk_log_notice ("DPDK drivers found no Ethernet devices...");
    }

  if (CLIB_DEBUG > 0)
    dpdk_log_notice ("DPDK drivers found %d ports...", nports);

  /* vlib_buffer_t template */
  vec_validate_aligned (dm->per_thread_data, tm->n_vlib_mains - 1,
			CLIB_CACHE_LINE_BYTES);
  for (int i = 0; i < tm->n_vlib_mains; i++)
    {
      dpdk_per_thread_data_t *ptd = vec_elt_at_index (dm->per_thread_data, i);
      clib_memset (&ptd->buffer_template, 0, sizeof (vlib_buffer_t));
      vnet_buffer (&ptd->buffer_template)->sw_if_index[VLIB_TX] = (u32) ~ 0;
    }

  /* device config defaults */
  dm->default_port_conf.n_rx_desc = DPDK_NB_RX_DESC_DEFAULT;
  dm->default_port_conf.n_tx_desc = DPDK_NB_TX_DESC_DEFAULT;
  dm->default_port_conf.n_rx_queues = 1;
  dm->default_port_conf.n_tx_queues = tm->n_vlib_mains;

  if ((clib_mem_get_default_hugepage_size () == 2 << 20) &&
      check_l3cache () == 0)
    dm->default_port_conf.n_rx_desc = dm->default_port_conf.n_tx_desc = 512;

  RTE_ETH_FOREACH_DEV (port_id)
    {
      u8 addr[6];
      struct rte_eth_dev_info di;
      struct rte_pci_device *pci_dev;
      struct rte_vmbus_device *vmbus_dev;
      dpdk_portid_t next_port_id;
      dpdk_device_config_t *devconf = 0;
      vnet_eth_interface_registration_t eir = {};
      vlib_pci_addr_t pci_addr;
      vlib_vmbus_addr_t vmbus_addr;
      uword *p = 0;

      if (!rte_eth_dev_is_valid_port (port_id))
	continue;

      rte_eth_dev_info_get (port_id, &di);

      if (di.device == 0)
	{
	  dpdk_log_notice ("DPDK bug: missing device info. Skipping %s device",
			   di.driver_name);
	  continue;
	}

      pci_dev = dpdk_get_pci_device (&di);

      if (pci_dev)
	{
	  pci_addr.domain = pci_dev->addr.domain;
	  pci_addr.bus = pci_dev->addr.bus;
	  pci_addr.slot = pci_dev->addr.devid;
	  pci_addr.function = pci_dev->addr.function;
	  p = hash_get (dm->conf->device_config_index_by_pci_addr,
			pci_addr.as_u32);
	}

      vmbus_dev = dpdk_get_vmbus_device (&di);

      if (vmbus_dev)
	{
	  unformat_input_t input_vmbus;
	  unformat_init_string (&input_vmbus, di.device->name,
				strlen (di.device->name));
	  if (unformat (&input_vmbus, "%U", unformat_vlib_vmbus_addr,
			&vmbus_addr))
	    {
	      p = mhash_get (&dm->conf->device_config_index_by_vmbus_addr,
			     &vmbus_addr);
	    }
	  unformat_free (&input_vmbus);
	}

      if (p)
	{
	  devconf = pool_elt_at_index (dm->conf->dev_confs, p[0]);
	  /* If device is blacklisted, we should skip it */
	  if (devconf->is_blacklisted)
	    {
	      continue;
	    }
	}
      else
	devconf = &dm->conf->default_devconf;

      /* Create vnet interface */
      vec_add2_aligned (dm->devices, xd, 1, CLIB_CACHE_LINE_BYTES);
      xd->cpu_socket = (i8) rte_eth_dev_socket_id (port_id);
      clib_memcpy (&xd->conf, &dm->default_port_conf,
		   sizeof (dpdk_port_conf_t));

      if (p)
	{
	  xd->name = devconf->name;
	}

      /* Handle representor devices that share the same PCI ID */
      if (di.switch_info.domain_id != RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID)
	{
	  if (di.switch_info.port_id != (uint16_t) -1)
	    xd->interface_name_suffix =
	      format (0, "%d", di.switch_info.port_id);
	}
      /* Handle interface naming for devices with multiple ports sharing same
       * PCI ID */
      else if (pci_dev && ((next_port_id = rte_eth_find_next (port_id + 1)) !=
			   RTE_MAX_ETHPORTS))
	{
	  struct rte_eth_dev_info next_di = { 0 };
	  struct rte_pci_device *next_pci_dev;
	  rte_eth_dev_info_get (next_port_id, &next_di);
	  next_pci_dev = next_di.device ? RTE_DEV_TO_PCI (next_di.device) : 0;
	  if (next_pci_dev && pci_addr.as_u32 != last_pci_addr.as_u32 &&
	      memcmp (&pci_dev->addr, &next_pci_dev->addr,
		      sizeof (struct rte_pci_addr)) == 0)
	    {
	      xd->interface_name_suffix = format (0, "0");
	      last_pci_addr.as_u32 = pci_addr.as_u32;
	      last_pci_addr_port = port_id;
	    }
	  else if (pci_addr.as_u32 == last_pci_addr.as_u32)
	    {
	      xd->interface_name_suffix =
		format (0, "%u", port_id - last_pci_addr_port);
	    }
	  else
	    {
	      last_pci_addr.as_u32 = ~0;
	    }
	}
      else
	last_pci_addr.as_u32 = ~0;

      if (di.rx_offload_capa & DEV_RX_OFFLOAD_IPV4_CKSUM)
	{
	  xd->port_conf.rxmode.offloads |= DEV_RX_OFFLOAD_IPV4_CKSUM;
	  xd->flags |= DPDK_DEVICE_FLAG_RX_IP4_CKSUM;
	}

      if (xd->conf.enable_tcp_udp_checksum)
	{
	  if (di.rx_offload_capa & DEV_RX_OFFLOAD_UDP_CKSUM)
	    xd->port_conf.rxmode.offloads |= DEV_RX_OFFLOAD_UDP_CKSUM;
	  if (di.rx_offload_capa & DEV_RX_OFFLOAD_TCP_CKSUM)
	    xd->port_conf.rxmode.offloads |= DEV_RX_OFFLOAD_TCP_CKSUM;
	  if (di.tx_offload_capa & DEV_TX_OFFLOAD_IPV4_CKSUM)
	    xd->port_conf.txmode.offloads |= DEV_TX_OFFLOAD_IPV4_CKSUM;

	  if (xd->conf.enable_outer_checksum_offload)
	    {
	      if (di.tx_offload_capa & DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM)
		xd->port_conf.txmode.offloads |=
		  DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM;
	      if (di.tx_offload_capa & DEV_TX_OFFLOAD_OUTER_UDP_CKSUM)
		xd->port_conf.txmode.offloads |=
		  DEV_TX_OFFLOAD_OUTER_UDP_CKSUM;
	    }
	}

      if (xd->conf.enable_lro)
	{
	  if (di.rx_offload_capa & DEV_RX_OFFLOAD_TCP_LRO)
	    {
	      xd->port_conf.rxmode.offloads |= DEV_RX_OFFLOAD_TCP_LRO;
	      if (devconf->max_lro_pkt_size)
		xd->port_conf.rxmode.max_lro_pkt_size =
		  devconf->max_lro_pkt_size;
	      else
		xd->port_conf.rxmode.max_lro_pkt_size =
		  DPDK_MAX_LRO_SIZE_DEFAULT;
	    }
	}
      if (xd->conf.no_multi_seg)
	{
	  xd->port_conf.txmode.offloads &= ~DEV_TX_OFFLOAD_MULTI_SEGS;
	  xd->port_conf.rxmode.offloads &= ~DEV_RX_OFFLOAD_JUMBO_FRAME;
	  xd->port_conf.rxmode.offloads &= ~DEV_RX_OFFLOAD_SCATTER;
	}
      else
	{
	  xd->port_conf.txmode.offloads |= DEV_TX_OFFLOAD_MULTI_SEGS;
	  xd->port_conf.rxmode.offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME;
	  xd->port_conf.rxmode.offloads |= DEV_RX_OFFLOAD_SCATTER;
	  xd->flags |= DPDK_DEVICE_FLAG_MAYBE_MULTISEG;
	}

      xd->conf.n_tx_queues = clib_min (di.max_tx_queues, xd->conf.n_tx_queues);

      if (devconf->num_tx_queues > 0 &&
	  devconf->num_tx_queues < xd->conf.n_tx_queues)
	xd->conf.n_tx_queues = devconf->num_tx_queues;

      if (devconf->num_rx_queues > 1 &&
	  di.max_rx_queues >= devconf->num_rx_queues)
	{
	  xd->conf.n_rx_queues = devconf->num_rx_queues;
	  xd->port_conf.rxmode.mq_mode = ETH_MQ_RX_RSS;
	  if (devconf->rss_fn == 0)
	    xd->port_conf.rx_adv_conf.rss_conf.rss_hf =
	      ETH_RSS_IP | ETH_RSS_UDP | ETH_RSS_TCP;
	  else
	    {
	      u64 unsupported_bits;
	      xd->port_conf.rx_adv_conf.rss_conf.rss_hf = devconf->rss_fn;
	      unsupported_bits = xd->port_conf.rx_adv_conf.rss_conf.rss_hf;
	      unsupported_bits &= ~di.flow_type_rss_offloads;
	      if (unsupported_bits)
		dpdk_log_warn ("Unsupported RSS hash functions: %U",
			       format_dpdk_rss_hf_name, unsupported_bits);
	    }
	  xd->port_conf.rx_adv_conf.rss_conf.rss_hf &=
	    di.flow_type_rss_offloads;
	}

      if (devconf->num_rx_desc)
	xd->conf.n_rx_desc = devconf->num_rx_desc;

      if (devconf->num_tx_desc)
	xd->conf.n_tx_desc = devconf->num_tx_desc;

      vec_validate_aligned (xd->rx_queues, xd->conf.n_rx_queues - 1,
			    CLIB_CACHE_LINE_BYTES);

      /* workaround for drivers not setting driver_name */
      if ((!di.driver_name) && (pci_dev))
	di.driver_name = pci_dev->driver->driver.name;

      ASSERT (di.driver_name);

      if (!xd->pmd)
	{

#define _(s, f)                                                               \
  else if (di.driver_name && !strcmp (di.driver_name, s)) xd->pmd =           \
    VNET_DPDK_PMD_##f;
	  if (0)
	    ;
	  foreach_dpdk_pmd
#undef _
	    else xd->pmd = VNET_DPDK_PMD_UNKNOWN;

	  xd->port_type = VNET_DPDK_PORT_TYPE_UNKNOWN;

	  switch (xd->pmd)
	    {
	      /* Drivers with valid speed_capa set */
	    case VNET_DPDK_PMD_I40E:
	      xd->flags |= DPDK_DEVICE_FLAG_INT_UNMASKABLE;
	      /* fall through */
	    case VNET_DPDK_PMD_E1000EM:
	    case VNET_DPDK_PMD_IGB:
	    case VNET_DPDK_PMD_IGC:
	    case VNET_DPDK_PMD_IXGBE:
	    case VNET_DPDK_PMD_ICE:
	      xd->port_type = port_type_from_speed_capa (&di);
	      xd->supported_flow_actions =
		VNET_FLOW_ACTION_MARK | VNET_FLOW_ACTION_REDIRECT_TO_NODE |
		VNET_FLOW_ACTION_REDIRECT_TO_QUEUE |
		VNET_FLOW_ACTION_BUFFER_ADVANCE | VNET_FLOW_ACTION_COUNT |
		VNET_FLOW_ACTION_DROP | VNET_FLOW_ACTION_RSS;

	      if (xd->conf.no_tx_checksum_offload == 0)
		{
		  xd->port_conf.txmode.offloads |= DEV_TX_OFFLOAD_TCP_CKSUM;
		  xd->port_conf.txmode.offloads |= DEV_TX_OFFLOAD_UDP_CKSUM;
		  xd->flags |= DPDK_DEVICE_FLAG_TX_OFFLOAD |
			       DPDK_DEVICE_FLAG_INTEL_PHDR_CKSUM;
		}

	      xd->port_conf.intr_conf.rxq = 1;
	      break;
	    case VNET_DPDK_PMD_MLX5:
	      if (xd->conf.no_tx_checksum_offload == 0)
		{
		  xd->port_conf.txmode.offloads |= DEV_TX_OFFLOAD_TCP_CKSUM;
		  xd->port_conf.txmode.offloads |= DEV_TX_OFFLOAD_UDP_CKSUM;
		  xd->flags |= DPDK_DEVICE_FLAG_TX_OFFLOAD |
			       DPDK_DEVICE_FLAG_INTEL_PHDR_CKSUM;
		}
	      xd->port_type = port_type_from_speed_capa (&di);
	      break;
	    case VNET_DPDK_PMD_CXGBE:
	    case VNET_DPDK_PMD_MLX4:
	    case VNET_DPDK_PMD_QEDE:
	    case VNET_DPDK_PMD_BNXT:
	      xd->port_type = port_type_from_speed_capa (&di);
	      break;

	      /* SR-IOV VFs */
	    case VNET_DPDK_PMD_I40EVF:
	      xd->flags |= DPDK_DEVICE_FLAG_INT_UNMASKABLE;
	      /* fall through */
	    case VNET_DPDK_PMD_IGBVF:
	    case VNET_DPDK_PMD_IXGBEVF:
	      xd->port_type = VNET_DPDK_PORT_TYPE_ETH_VF;
	      if (xd->conf.no_tx_checksum_offload == 0)
		{
		  xd->port_conf.txmode.offloads |= DEV_TX_OFFLOAD_TCP_CKSUM;
		  xd->port_conf.txmode.offloads |= DEV_TX_OFFLOAD_UDP_CKSUM;
		  xd->flags |= DPDK_DEVICE_FLAG_TX_OFFLOAD |
			       DPDK_DEVICE_FLAG_INTEL_PHDR_CKSUM;
		}
	      /* DPDK bug in multiqueue... */
	      /* xd->port_conf.intr_conf.rxq = 1; */
	      break;

	      /* iAVF */
	    case VNET_DPDK_PMD_IAVF:
	      xd->flags |= DPDK_DEVICE_FLAG_INT_UNMASKABLE;
	      xd->port_type = VNET_DPDK_PORT_TYPE_ETH_VF;
	      xd->supported_flow_actions =
		VNET_FLOW_ACTION_MARK | VNET_FLOW_ACTION_REDIRECT_TO_NODE |
		VNET_FLOW_ACTION_REDIRECT_TO_QUEUE |
		VNET_FLOW_ACTION_BUFFER_ADVANCE | VNET_FLOW_ACTION_COUNT |
		VNET_FLOW_ACTION_DROP | VNET_FLOW_ACTION_RSS;

	      if (xd->conf.no_tx_checksum_offload == 0)
		{
		  xd->port_conf.txmode.offloads |= DEV_TX_OFFLOAD_TCP_CKSUM;
		  xd->port_conf.txmode.offloads |= DEV_TX_OFFLOAD_UDP_CKSUM;
		  xd->flags |= DPDK_DEVICE_FLAG_TX_OFFLOAD |
			       DPDK_DEVICE_FLAG_INTEL_PHDR_CKSUM;
		}
	      /* DPDK bug in multiqueue... */
	      /* xd->port_conf.intr_conf.rxq = 1; */
	      break;

	    case VNET_DPDK_PMD_THUNDERX:
	      xd->port_type = VNET_DPDK_PORT_TYPE_ETH_VF;

	      if (xd->conf.no_tx_checksum_offload == 0)
		{
		  xd->port_conf.txmode.offloads |= DEV_TX_OFFLOAD_TCP_CKSUM;
		  xd->port_conf.txmode.offloads |= DEV_TX_OFFLOAD_UDP_CKSUM;
		  xd->flags |= DPDK_DEVICE_FLAG_TX_OFFLOAD;
		}
	      break;

	    case VNET_DPDK_PMD_ENA:
	      xd->port_type = VNET_DPDK_PORT_TYPE_ETH_VF;
	      xd->port_conf.rxmode.offloads &= ~DEV_RX_OFFLOAD_SCATTER;
	      xd->port_conf.intr_conf.rxq = 1;
	      if (xd->conf.no_tx_checksum_offload == 0)
		{
		  xd->port_conf.txmode.offloads |= DEV_TX_OFFLOAD_IPV4_CKSUM;
		  xd->port_conf.txmode.offloads |= DEV_TX_OFFLOAD_TCP_CKSUM;
		  xd->port_conf.txmode.offloads |= DEV_TX_OFFLOAD_UDP_CKSUM;
		  xd->flags |= DPDK_DEVICE_FLAG_TX_OFFLOAD;
		}
	      break;

	    case VNET_DPDK_PMD_DPAA2:
	      xd->port_type = VNET_DPDK_PORT_TYPE_ETH_10G;
	      break;

	      /* Cisco VIC */
	    case VNET_DPDK_PMD_ENIC:
	      {
		xd->port_type = port_type_from_speed_capa (&di);
		if (xd->conf.enable_tcp_udp_checksum)
		  dpdk_enable_l4_csum_offload (xd);
	      }
	      break;

	      /* Intel Red Rock Canyon */
	    case VNET_DPDK_PMD_FM10K:
	      xd->port_type = VNET_DPDK_PORT_TYPE_ETH_SWITCH;
	      break;

	      /* virtio */
	    case VNET_DPDK_PMD_VIRTIO:
	      xd->port_conf.rxmode.mq_mode = ETH_MQ_RX_NONE;
	      xd->port_type = VNET_DPDK_PORT_TYPE_ETH_1G;
	      xd->conf.n_rx_desc = DPDK_NB_RX_DESC_VIRTIO;
	      xd->conf.n_tx_desc = DPDK_NB_TX_DESC_VIRTIO;
	      /*
	       * Enable use of RX interrupts if supported.
	       *
	       * There is no device flag or capability for this, so
	       * use the same check that the virtio driver does.
	       */
	      if (pci_dev && rte_intr_cap_multiple (&pci_dev->intr_handle))
		xd->port_conf.intr_conf.rxq = 1;
	      break;

	      /* vmxnet3 */
	    case VNET_DPDK_PMD_VMXNET3:
	      xd->port_type = VNET_DPDK_PORT_TYPE_ETH_1G;
	      xd->port_conf.txmode.offloads |= DEV_TX_OFFLOAD_MULTI_SEGS;
	      /* TCP csum offload not working although udp might work. Left
	       * disabled for now */
	      if (0 && (xd->conf.no_tx_checksum_offload == 0))
		{
		  xd->port_conf.txmode.offloads |= DEV_TX_OFFLOAD_IPV4_CKSUM;
		  xd->port_conf.txmode.offloads |= DEV_TX_OFFLOAD_TCP_CKSUM;
		  xd->port_conf.txmode.offloads |= DEV_TX_OFFLOAD_UDP_CKSUM;
		  xd->flags |= DPDK_DEVICE_FLAG_TX_OFFLOAD;
		}
	      break;

	    case VNET_DPDK_PMD_AF_PACKET:
	      xd->port_type = VNET_DPDK_PORT_TYPE_AF_PACKET;
	      break;

	    case VNET_DPDK_PMD_VIRTIO_USER:
	      xd->port_type = VNET_DPDK_PORT_TYPE_VIRTIO_USER;
	      break;

	    case VNET_DPDK_PMD_VHOST_ETHER:
	      xd->port_type = VNET_DPDK_PORT_TYPE_VHOST_ETHER;
	      break;

	    case VNET_DPDK_PMD_LIOVF_ETHER:
	      xd->port_type = VNET_DPDK_PORT_TYPE_ETH_VF;
	      break;

	    case VNET_DPDK_PMD_FAILSAFE:
	      xd->port_type = VNET_DPDK_PORT_TYPE_FAILSAFE;
	      xd->port_conf.intr_conf.lsc = 1;
	      break;

	    case VNET_DPDK_PMD_NETVSC:
	      {
		xd->port_type = VNET_DPDK_PORT_TYPE_ETH_VF;
	      }
	      break;

	    default:
	      xd->port_type = VNET_DPDK_PORT_TYPE_UNKNOWN;
	    }
	}

      if (xd->pmd == VNET_DPDK_PMD_AF_PACKET)
	{
	  f64 now = vlib_time_now (vm);
	  u32 rnd;
	  rnd = (u32) (now * 1e6);
	  rnd = random_u32 (&rnd);
	  clib_memcpy (addr + 2, &rnd, sizeof (rnd));
	  addr[0] = 2;
	  addr[1] = 0xfe;
	}
      else
	rte_eth_macaddr_get (port_id, (void *) addr);

      xd->port_id = port_id;
      xd->device_index = xd - dm->devices;
      xd->per_interface_next_index = ~0;

      /* assign interface to input thread */
      int q;

      eir.dev_class_index = dpdk_device_class.index;
      eir.dev_instance = xd->device_index;
      eir.address = addr;
      eir.cb.flag_change = dpdk_flag_change;
      xd->hw_if_index = vnet_eth_register_interface (vnm, &eir);

      sw = vnet_get_hw_sw_interface (vnm, xd->hw_if_index);
      xd->sw_if_index = sw->sw_if_index;
      vnet_hw_if_set_input_node (vnm, xd->hw_if_index, dpdk_input_node.index);

      if (devconf->workers)
	{
	  int j;
	  q = 0;
	  clib_bitmap_foreach (j, devconf->workers)
	    {
	      dpdk_rx_queue_t *rxq = vec_elt_at_index (xd->rx_queues, q);
	      rxq->queue_index = vnet_hw_if_register_rx_queue (
		vnm, xd->hw_if_index, q++, vdm->first_worker_thread_index + j);
	    }
	}
      else
	for (q = 0; q < xd->conf.n_rx_queues; q++)
	  {
	    dpdk_rx_queue_t *rxq = vec_elt_at_index (xd->rx_queues, q);
	    rxq->queue_index = vnet_hw_if_register_rx_queue (
	      vnm, xd->hw_if_index, q, VNET_HW_IF_RXQ_THREAD_ANY);
	  }

      vnet_hw_if_update_runtime_data (vnm, xd->hw_if_index);

      /*Get vnet hardware interface */
      hi = vnet_get_hw_interface (vnm, xd->hw_if_index);

      if (hi)
	{
	  hi->numa_node = xd->cpu_socket;

	  /* Indicate ability to support L3 DMAC filtering and
	   * initialize interface to L3 non-promisc mode */
	  ethernet_set_flags (vnm, xd->hw_if_index,
			      ETHERNET_INTERFACE_FLAG_DEFAULT_L3);
	}

      if (devconf->tso == DPDK_DEVICE_TSO_ON && hi != NULL)
	{
	  /*tcp_udp checksum must be enabled*/
	  if ((xd->conf.enable_tcp_udp_checksum) &&
	      (xd->flags & DPDK_DEVICE_FLAG_TX_OFFLOAD))
	    {
	      xd->port_conf.txmode.offloads |= DEV_TX_OFFLOAD_TCP_TSO;

	      if (xd->conf.enable_outer_checksum_offload &&
		  (di.tx_offload_capa & DEV_TX_OFFLOAD_VXLAN_TNL_TSO))
		{
		  xd->port_conf.txmode.offloads |=
		    DEV_TX_OFFLOAD_VXLAN_TNL_TSO;
		}
	    }
	  else
	    clib_warning ("%s: TCP/UDP checksum offload must be enabled",
			  hi->name);
	}

      dpdk_device_setup (xd);

      /* rss queues should be configured after dpdk_device_setup() */
      if ((hi != NULL) && (devconf->rss_queues != NULL))
	{
	  if (vnet_hw_interface_set_rss_queues (vnet_get_main (), hi,
						devconf->rss_queues))
	    {
	      clib_warning ("%s: Failed to set rss queues", hi->name);
	    }
	}

      if (vec_len (xd->errors))
	dpdk_log_err ("setup failed for device %U. Errors:\n  %U",
		      format_dpdk_device_name, port_id,
		      format_dpdk_device_errors, xd);
    }

  return 0;
}

static void
dpdk_bind_devices_to_uio (dpdk_config_main_t * conf)
{
  vlib_main_t *vm = vlib_get_main ();
  clib_error_t *error;
  u8 *pci_addr = 0;
  int num_whitelisted = vec_len (conf->dev_confs);
  vlib_pci_device_info_t *d = 0;
  vlib_pci_addr_t *addr = 0, *addrs;
  int i;

  addrs = vlib_pci_get_all_dev_addrs ();
  /* *INDENT-OFF* */
  vec_foreach (addr, addrs)
    {
    dpdk_device_config_t * devconf = 0;
    vec_reset_length (pci_addr);
    pci_addr = format (pci_addr, "%U%c", format_vlib_pci_addr, addr, 0);
    if (d)
    {
      vlib_pci_free_device_info (d);
      d = 0;
      }
    d = vlib_pci_get_device_info (vm, addr, &error);
    if (error)
    {
      vlib_log_warn (dpdk_main.log_default, "%U", format_clib_error, error);
      clib_error_free (error);
      continue;
    }

    if (d->device_class != PCI_CLASS_NETWORK_ETHERNET && d->device_class != PCI_CLASS_PROCESSOR_CO)
      continue;

    if (num_whitelisted)
      {
	uword * p = hash_get (conf->device_config_index_by_pci_addr, addr->as_u32);

	if (!p)
          {
	  skipped_pci:
	    continue;
	  }

	devconf = pool_elt_at_index (conf->dev_confs, p[0]);
      }

    /* Enforce Device blacklist by vendor and device */
    for (i = 0; i < vec_len (conf->blacklist_by_pci_vendor_and_device); i++)
      {
        u16 vendor, device;
        vendor = (u16)(conf->blacklist_by_pci_vendor_and_device[i] >> 16);
        device = (u16)(conf->blacklist_by_pci_vendor_and_device[i] & 0xFFFF);
        if (d->vendor_id == vendor && d->device_id == device)
          {
            /*
             * Expected case: device isn't whitelisted,
             * so blacklist it...
             */
            if (devconf == 0)
              {
                /* Device is blacklisted */
                pool_get (conf->dev_confs, devconf);
                hash_set (conf->device_config_index_by_pci_addr, addr->as_u32,
                          devconf - conf->dev_confs);
                devconf->pci_addr.as_u32 = addr->as_u32;
		devconf->dev_addr_type = VNET_DEV_ADDR_PCI;
		devconf->is_blacklisted = 1;
		goto skipped_pci;
	      }
	    else /* explicitly whitelisted, ignore the device blacklist  */
	      break;
	  }
      }

    /* virtio */
    if (d->vendor_id == 0x1af4 &&
            (d->device_id == VIRTIO_PCI_LEGACY_DEVICEID_NET ||
             d->device_id == VIRTIO_PCI_MODERN_DEVICEID_NET))
      ;
    /* vmxnet3 */
    else if (d->vendor_id == 0x15ad && d->device_id == 0x07b0)
      {
	/*
	 * For vmxnet3 PCI, unless it is explicitly specified in the whitelist,
	 * the default is to put it in the blacklist.
	 */
	if (devconf == 0)
	  {
	    pool_get (conf->dev_confs, devconf);
	    hash_set (conf->device_config_index_by_pci_addr, addr->as_u32,
		      devconf - conf->dev_confs);
	    devconf->pci_addr.as_u32 = addr->as_u32;
	    devconf->is_blacklisted = 1;
	  }
      }
    /* all Intel network devices */
    else if (d->vendor_id == 0x8086 && d->device_class == PCI_CLASS_NETWORK_ETHERNET)
      ;
    /* all Intel QAT devices VFs */
    else if (d->vendor_id == 0x8086 && d->device_class == PCI_CLASS_PROCESSOR_CO &&
        (d->device_id == 0x0443 || d->device_id == 0x18a1 || d->device_id == 0x19e3 ||
        d->device_id == 0x37c9 || d->device_id == 0x6f55))
      ;
    /* Cisco VIC */
    else if (d->vendor_id == 0x1137 &&
        (d->device_id == 0x0043 || d->device_id == 0x0071))
      ;
    /* Chelsio T4/T5 */
    else if (d->vendor_id == 0x1425 && (d->device_id & 0xe000) == 0x4000)
      ;
    /* Amazon Elastic Network Adapter */
    else if (d->vendor_id == 0x1d0f && d->device_id >= 0xec20 && d->device_id <= 0xec21)
      ;
    /* Cavium Network Adapter */
    else if (d->vendor_id == 0x177d && d->device_id == 0x9712)
      ;
    /* Cavium FastlinQ QL41000 Series */
    else if (d->vendor_id == 0x1077 && d->device_id >= 0x8070 && d->device_id <= 0x8090)
      ;
    /* Mellanox CX3, CX3VF */
    else if (d->vendor_id == 0x15b3 && d->device_id >= 0x1003 && d->device_id <= 0x1004)
      {
        continue;
      }
    /* Mellanox CX4, CX4VF, CX4LX, CX4LXVF, CX5, CX5VF, CX5EX, CX5EXVF */
    else if (d->vendor_id == 0x15b3 && d->device_id >= 0x1013 && d->device_id <= 0x101a)
      {
        continue;
      }
    /* Mellanox CX6, CX6VF, CX6DX, CX6DXVF */
    else if (d->vendor_id == 0x15b3 && d->device_id >= 0x101b && d->device_id <= 0x101e)
      {
        continue;
      }
    /* Broadcom NetXtreme S, and E series only */
    else if (d->vendor_id == 0x14e4 &&
	((d->device_id >= 0x16c0 &&
		d->device_id != 0x16c6 && d->device_id != 0x16c7 &&
		d->device_id != 0x16dd && d->device_id != 0x16f7 &&
		d->device_id != 0x16fd && d->device_id != 0x16fe &&
		d->device_id != 0x170d && d->device_id != 0x170c &&
		d->device_id != 0x170e && d->device_id != 0x1712 &&
		d->device_id != 0x1713) ||
	(d->device_id == 0x1604 || d->device_id == 0x1605 ||
	 d->device_id == 0x1614 || d->device_id == 0x1606 ||
	 d->device_id == 0x1609 || d->device_id == 0x1614)))
      ;
    else
      {
        dpdk_log_warn ("Unsupported PCI device 0x%04x:0x%04x found "
		      "at PCI address %s\n", (u16) d->vendor_id, (u16) d->device_id,
		      pci_addr);
        continue;
      }

    error = vlib_pci_bind_to_uio (vm, addr, (char *) conf->uio_driver_name);

    if (error)
      {
	if (devconf == 0)
	  {
	    pool_get (conf->dev_confs, devconf);
	    hash_set (conf->device_config_index_by_pci_addr, addr->as_u32,
		      devconf - conf->dev_confs);
	    devconf->pci_addr.as_u32 = addr->as_u32;
	  }
	devconf->dev_addr_type = VNET_DEV_ADDR_PCI;
	devconf->is_blacklisted = 1;
	clib_error_report (error);
      }
  }
  /* *INDENT-ON* */
  vec_free (pci_addr);
  vlib_pci_free_device_info (d);
}

static void
dpdk_bind_vmbus_devices_to_uio (dpdk_config_main_t * conf)
{
  clib_error_t *error;
  vlib_vmbus_addr_t *addrs, *addr = 0;
  int num_whitelisted = vec_len (conf->dev_confs);
  int i;

  addrs = vlib_vmbus_get_all_dev_addrs ();

  /* *INDENT-OFF* */
  vec_foreach (addr, addrs)
    {
      dpdk_device_config_t *devconf = 0;
      if (num_whitelisted)
	{
	  uword *p =
	    mhash_get (&conf->device_config_index_by_vmbus_addr, addr);
	  if (!p)
	    {
	      /* No devices blacklisted, but have whitelisted. blacklist all
	       * non-whitelisted */
	      pool_get (conf->dev_confs, devconf);
	      mhash_set (&conf->device_config_index_by_vmbus_addr, addr,
			 devconf - conf->dev_confs, 0);
	      devconf->vmbus_addr = *addr;
	      devconf->dev_addr_type = VNET_DEV_ADDR_VMBUS;
	      devconf->is_blacklisted = 1;
	    skipped_vmbus:
	      continue;
	    }

	  devconf = pool_elt_at_index (conf->dev_confs, p[0]);
	}

      /* Enforce Device blacklist by vmbus_addr */
      for (i = 0; i < vec_len (conf->blacklist_by_vmbus_addr); i++)
	{
	  vlib_vmbus_addr_t *a1 = &conf->blacklist_by_vmbus_addr[i];
	  vlib_vmbus_addr_t *a2 = addr;
	  if (memcmp (a1, a2, sizeof (vlib_vmbus_addr_t)) == 0)
	    {
	      if (devconf == 0)
		{
		  /* Device not whitelisted */
		  pool_get (conf->dev_confs, devconf);
		  mhash_set (&conf->device_config_index_by_vmbus_addr, addr,
			     devconf - conf->dev_confs, 0);
		  devconf->vmbus_addr = *addr;
		  devconf->dev_addr_type = VNET_DEV_ADDR_VMBUS;
		  devconf->is_blacklisted = 1;
		  goto skipped_vmbus;
		}
	      else
		{
		  break;
		}
	    }
	}

      error = vlib_vmbus_bind_to_uio (addr);
      if (error)
	{
	  if (devconf == 0)
	    {
	      pool_get (conf->dev_confs, devconf);
	      mhash_set (&conf->device_config_index_by_vmbus_addr, addr,
			 devconf - conf->dev_confs, 0);
	      devconf->vmbus_addr = *addr;
	    }
	  devconf->dev_addr_type = VNET_DEV_ADDR_VMBUS;
	  devconf->is_blacklisted = 1;
	  clib_error_report (error);
	}
    }
  /* *INDENT-ON* */
}

uword
unformat_max_simd_bitwidth (unformat_input_t *input, va_list *va)
{
  uword *max_simd_bitwidth = va_arg (*va, uword *);

  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
    {
      if (!unformat (input, "%u", max_simd_bitwidth))
	goto error;

      if (*max_simd_bitwidth != DPDK_MAX_SIMD_BITWIDTH_256 &&
	  *max_simd_bitwidth != DPDK_MAX_SIMD_BITWIDTH_512)
	goto error;
    }
  return 1;
error:
  return 0;
}

static clib_error_t *
dpdk_device_config (dpdk_config_main_t *conf, void *addr,
		    dpdk_device_addr_type_t addr_type, unformat_input_t *input,
		    u8 is_default)
{
  clib_error_t *error = 0;
  uword *p;
  dpdk_device_config_t *devconf = 0;
  unformat_input_t sub_input;

  if (is_default)
    {
      devconf = &conf->default_devconf;
    }
  else if (addr_type == VNET_DEV_ADDR_PCI)
    {
      p = hash_get (conf->device_config_index_by_pci_addr,
		    ((vlib_pci_addr_t *) (addr))->as_u32);

      if (!p)
	{
	  pool_get (conf->dev_confs, devconf);
	  hash_set (conf->device_config_index_by_pci_addr,
		    ((vlib_pci_addr_t *) (addr))->as_u32,
		    devconf - conf->dev_confs);
	}
      else
	return clib_error_return (0,
				  "duplicate configuration for PCI address %U",
				  format_vlib_pci_addr, addr);
    }
  else if (addr_type == VNET_DEV_ADDR_VMBUS)
    {
      p = mhash_get (&conf->device_config_index_by_vmbus_addr,
		     (vlib_vmbus_addr_t *) (addr));

      if (!p)
	{
	  pool_get (conf->dev_confs, devconf);
	  mhash_set (&conf->device_config_index_by_vmbus_addr, addr,
		     devconf - conf->dev_confs, 0);
	}
      else
	return clib_error_return (
	  0, "duplicate configuration for VMBUS address %U",
	  format_vlib_vmbus_addr, addr);
    }

  if (addr_type == VNET_DEV_ADDR_PCI)
    {
      devconf->pci_addr.as_u32 = ((vlib_pci_addr_t *) (addr))->as_u32;
      devconf->tso = DPDK_DEVICE_TSO_DEFAULT;
      devconf->dev_addr_type = VNET_DEV_ADDR_PCI;
    }
  else if (addr_type == VNET_DEV_ADDR_VMBUS)
    {
      devconf->vmbus_addr = *((vlib_vmbus_addr_t *) (addr));
      devconf->tso = DPDK_DEVICE_TSO_DEFAULT;
      devconf->dev_addr_type = VNET_DEV_ADDR_VMBUS;
    }

  if (!input)
    return 0;

  unformat_skip_white_space (input);
  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
    {
      if (unformat (input, "num-rx-queues %u", &devconf->num_rx_queues))
	;
      else if (unformat (input, "num-tx-queues %u", &devconf->num_tx_queues))
	;
      else if (unformat (input, "num-rx-desc %u", &devconf->num_rx_desc))
	;
      else if (unformat (input, "num-tx-desc %u", &devconf->num_tx_desc))
	;
      else if (unformat (input, "name %s", &devconf->name))
	;
      else if (unformat (input, "workers %U", unformat_bitmap_list,
			 &devconf->workers))
	;
      else
	if (unformat
	    (input, "rss %U", unformat_vlib_cli_sub_input, &sub_input))
	{
	  error = unformat_rss_fn (&sub_input, &devconf->rss_fn);
	  if (error)
	    break;
	}
      else if (unformat (input, "tso on"))
	{
	  devconf->tso = DPDK_DEVICE_TSO_ON;
	}
      else if (unformat (input, "tso off"))
	{
	  devconf->tso = DPDK_DEVICE_TSO_OFF;
	}
      else if (unformat (input, "devargs %s", &devconf->devargs))
	;
      else if (unformat (input, "rss-queues %U",
			 unformat_bitmap_list, &devconf->rss_queues))
	;
      else if (unformat (input, "max-lro-pkt-size %u",
			 &devconf->max_lro_pkt_size))
	;
      else
	{
	  error = clib_error_return (0, "unknown input `%U'",
				     format_unformat_error, input);
	  break;
	}
    }

  if (error)
    return error;

  if (devconf->workers && devconf->num_rx_queues == 0)
    devconf->num_rx_queues = clib_bitmap_count_set_bits (devconf->workers);
  else if (devconf->workers &&
	   clib_bitmap_count_set_bits (devconf->workers) !=
	   devconf->num_rx_queues)
    error = clib_error_return (0,
			       "%U: number of worker threads must be "
			       "equal to number of rx queues",
			       format_vlib_pci_addr, addr);

  return error;
}

static clib_error_t *
dpdk_log_read_ready (clib_file_t * uf)
{
  unformat_input_t input;
  u8 *line, *s = 0;
  int n, n_try;

  n = n_try = 4096;
  while (n == n_try)
    {
      uword len = vec_len (s);
      vec_resize (s, len + n_try);

      n = read (uf->file_descriptor, s + len, n_try);
      if (n < 0 && errno != EAGAIN)
	return clib_error_return_unix (0, "read");
      _vec_len (s) = len + (n < 0 ? 0 : n);
    }

  unformat_init_vector (&input, s);

  while (unformat_user (&input, unformat_line, &line))
    {
      dpdk_log_notice ("%v", line);
      vec_free (line);
    }

  unformat_free (&input);
  return 0;
}

static clib_error_t *
dpdk_config (vlib_main_t * vm, unformat_input_t * input)
{
  dpdk_main_t *dm = &dpdk_main;
  clib_error_t *error = 0;
  dpdk_config_main_t *conf = &dpdk_config_main;
  vlib_thread_main_t *tm = vlib_get_thread_main ();
  dpdk_device_config_t *devconf;
  vlib_pci_addr_t pci_addr = { 0 };
  vlib_vmbus_addr_t vmbus_addr = { 0 };
  unformat_input_t sub_input;
  uword default_hugepage_sz, x;
  u8 *s, *tmp = 0;
  int ret, i;
  int num_whitelisted = 0;
  int eal_no_hugetlb = 0;
  u8 no_pci = 0;
  u8 no_vmbus = 0;
  u8 file_prefix = 0;
  u8 *socket_mem = 0;
  u8 *huge_dir_path = 0;
  u32 vendor, device, domain, bus, func;

  huge_dir_path =
    format (0, "%s/hugepages%c", vlib_unix_get_runtime_dir (), 0);

  conf->device_config_index_by_pci_addr = hash_create (0, sizeof (uword));
  mhash_init (&conf->device_config_index_by_vmbus_addr, sizeof (uword),
	      sizeof (vlib_vmbus_addr_t));

  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
    {
      /* Prime the pump */
      if (unformat (input, "no-hugetlb"))
	{
	  vec_add1 (conf->eal_init_args, (u8 *) "--no-huge");
	  eal_no_hugetlb = 1;
	}
      else if (unformat (input, "telemetry"))
	conf->enable_telemetry = 1;

      else if (unformat (input, "enable-tcp-udp-checksum"))
	{
	  dm->default_port_conf.enable_tcp_udp_checksum = 1;
	  if (unformat (input, "enable-outer-checksum-offload"))
	    dm->default_port_conf.enable_outer_checksum_offload = 1;
	}
      else if (unformat (input, "no-tx-checksum-offload"))
	dm->default_port_conf.no_tx_checksum_offload = 1;

      else if (unformat (input, "decimal-interface-names"))
	conf->interface_name_format_decimal = 1;

      else if (unformat (input, "no-multi-seg"))
	dm->default_port_conf.no_multi_seg = 1;
      else if (unformat (input, "enable-lro"))
	dm->default_port_conf.enable_lro = 1;
      else if (unformat (input, "max-simd-bitwidth %U",
			 unformat_max_simd_bitwidth, &conf->max_simd_bitwidth))
	;
      else if (unformat (input, "dev default %U", unformat_vlib_cli_sub_input,
			 &sub_input))
	{
	  error =
	    dpdk_device_config (conf, 0, VNET_DEV_ADDR_ANY, &sub_input, 1);

	  if (error)
	    return error;
	}
      else
	if (unformat
	    (input, "dev %U %U", unformat_vlib_pci_addr, &pci_addr,
	     unformat_vlib_cli_sub_input, &sub_input))
	{
	  error = dpdk_device_config (conf, &pci_addr, VNET_DEV_ADDR_PCI,
				      &sub_input, 0);

	  if (error)
	    return error;

	  num_whitelisted++;
	}
      else if (unformat (input, "dev %U", unformat_vlib_pci_addr, &pci_addr))
	{
	  error =
	    dpdk_device_config (conf, &pci_addr, VNET_DEV_ADDR_PCI, 0, 0);

	  if (error)
	    return error;

	  num_whitelisted++;
	}
      else if (unformat (input, "dev %U %U", unformat_vlib_vmbus_addr,
			 &vmbus_addr, unformat_vlib_cli_sub_input, &sub_input))
	{
	  error = dpdk_device_config (conf, &vmbus_addr, VNET_DEV_ADDR_VMBUS,
				      &sub_input, 0);

	  if (error)
	    return error;

	  num_whitelisted++;
	}
      else if (unformat (input, "dev %U", unformat_vlib_vmbus_addr,
			 &vmbus_addr))
	{
	  error =
	    dpdk_device_config (conf, &vmbus_addr, VNET_DEV_ADDR_VMBUS, 0, 0);

	  if (error)
	    return error;

	  num_whitelisted++;
	}
      else if (unformat (input, "uio-driver %s", &conf->uio_driver_name))
	;
      else if (unformat (input, "socket-mem %s", &socket_mem))
	;
      else if (unformat (input, "no-pci"))
	{
	  no_pci = 1;
	  tmp = format (0, "--no-pci%c", 0);
	  vec_add1 (conf->eal_init_args, tmp);
	}
      else if (unformat (input, "blacklist %U", unformat_vlib_vmbus_addr,
			 &vmbus_addr))
	{
	  vec_add1 (conf->blacklist_by_vmbus_addr, vmbus_addr);
	}
      else
	if (unformat
	    (input, "blacklist %x:%x:%x.%x", &domain, &bus, &device, &func))
	{
	  tmp = format (0, "-b%c", 0);
	  vec_add1 (conf->eal_init_args, tmp);
	  tmp =
	    format (0, "%04x:%02x:%02x.%x%c", domain, bus, device, func, 0);
	  vec_add1 (conf->eal_init_args, tmp);
	}
      else if (unformat (input, "blacklist %x:%x", &vendor, &device))
	{
	  u32 blacklist_entry;
	  if (vendor > 0xFFFF)
	    return clib_error_return (0, "blacklist PCI vendor out of range");
	  if (device > 0xFFFF)
	    return clib_error_return (0, "blacklist PCI device out of range");
	  blacklist_entry = (vendor << 16) | (device & 0xffff);
	  vec_add1 (conf->blacklist_by_pci_vendor_and_device,
		    blacklist_entry);
	}
      else if (unformat (input, "no-vmbus"))
	{
	  no_vmbus = 1;
	  tmp = format (0, "--no-vmbus%c", 0);
	  vec_add1 (conf->eal_init_args, tmp);
	}

#define _(a)                                    \
      else if (unformat(input, #a))             \
        {                                       \
          tmp = format (0, "--%s%c", #a, 0);    \
          vec_add1 (conf->eal_init_args, tmp);    \
        }
      foreach_eal_double_hyphen_predicate_arg
#undef _
#define _(a)                                          \
	else if (unformat(input, #a " %s", &s))	      \
	  {					      \
            if (!strncmp(#a, "file-prefix", 11)) \
              file_prefix = 1;                        \
	    tmp = format (0, "--%s%c", #a, 0);	      \
	    vec_add1 (conf->eal_init_args, tmp);      \
	    vec_add1 (s, 0);			      \
            if (!strncmp(#a, "vdev", 4))              \
              if (strstr((char*)s, "af_packet"))      \
                clib_warning ("af_packet obsoleted. Use CLI 'create host-interface'."); \
	    vec_add1 (conf->eal_init_args, s);	      \
	  }
	foreach_eal_double_hyphen_arg
#undef _
#define _(a,b)						\
	  else if (unformat(input, #a " %s", &s))	\
	    {						\
	      tmp = format (0, "-%s%c", #b, 0);		\
	      vec_add1 (conf->eal_init_args, tmp);	\
	      vec_add1 (s, 0);				\
	      vec_add1 (conf->eal_init_args, s);	\
	    }
	foreach_eal_single_hyphen_arg
#undef _
	else if (unformat (input, "default"))
	;

      else if (unformat_skip_white_space (input))
	;
      else
	{
	  error = clib_error_return (0, "unknown input `%U'",
				     format_unformat_error, input);
	  goto done;
	}
    }

  if (!conf->uio_driver_name)
    conf->uio_driver_name = format (0, "auto%c", 0);

  if (eal_no_hugetlb == 0)
    {
      vec_add1 (conf->eal_init_args, (u8 *) "--in-memory");

      default_hugepage_sz = clib_mem_get_default_hugepage_size ();

      /* *INDENT-OFF* */
      clib_bitmap_foreach (x, tm->cpu_socket_bitmap)
	{
	  clib_error_t *e;
	  uword n_pages;
	  /* preallocate at least 16MB of hugepages per socket,
	    if more is needed it is up to consumer to preallocate more */
	  n_pages = round_pow2 ((uword) 16 << 20, default_hugepage_sz);
	  n_pages /= default_hugepage_sz;

	  if ((e = clib_sysfs_prealloc_hugepages(x, 0, n_pages)))
	    clib_error_report (e);
        }
      /* *INDENT-ON* */
    }

  /* on/off dpdk's telemetry thread */
  if (conf->enable_telemetry == 0)
    {
      vec_add1 (conf->eal_init_args, (u8 *) "--no-telemetry");
    }

  if (!file_prefix)
    {
      tmp = format (0, "--file-prefix%c", 0);
      vec_add1 (conf->eal_init_args, tmp);
      tmp = format (0, "vpp%c", 0);
      vec_add1 (conf->eal_init_args, tmp);
    }

  if (error)
    return error;

  if (no_pci == 0 && geteuid () == 0)
    dpdk_bind_devices_to_uio (conf);

  if (no_vmbus == 0 && geteuid () == 0)
    dpdk_bind_vmbus_devices_to_uio (conf);

#define _(x) \
    if (devconf->x == 0 && conf->default_devconf.x > 0) \
      devconf->x = conf->default_devconf.x ;

  pool_foreach (devconf, conf->dev_confs)  {

    /* default per-device config items */
    foreach_dpdk_device_config_item

      /* copy tso config from default device */
      _ (tso)

      /* copy tso config from default device */
      _ (devargs)

      /* copy rss_queues config from default device */
      _ (rss_queues)

      /* add DPDK EAL whitelist/blacklist entry */
      if (num_whitelisted > 0 && devconf->is_blacklisted == 0 &&
	  devconf->dev_addr_type == VNET_DEV_ADDR_PCI)
    {
	  tmp = format (0, "-a%c", 0);
	  vec_add1 (conf->eal_init_args, tmp);
	  if (devconf->devargs)
	  {
	    tmp = format (0, "%U,%s%c", format_vlib_pci_addr,
			  &devconf->pci_addr, devconf->devargs, 0);
	  }
	  else
	  {
	    tmp = format (0, "%U%c", format_vlib_pci_addr, &devconf->pci_addr, 0);
	  }
	  vec_add1 (conf->eal_init_args, tmp);
    }
    else if (num_whitelisted == 0 && devconf->is_blacklisted != 0 &&
	     devconf->dev_addr_type == VNET_DEV_ADDR_PCI)
    {
	  tmp = format (0, "-b%c", 0);
	  vec_add1 (conf->eal_init_args, tmp);
	  tmp = format (0, "%U%c", format_vlib_pci_addr, &devconf->pci_addr, 0);
	  vec_add1 (conf->eal_init_args, tmp);
    }
  }

#undef _

  if (socket_mem)
    clib_warning ("socket-mem argument is deprecated");

  /* NULL terminate the "argv" vector, in case of stupidity */
  vec_add1 (conf->eal_init_args, 0);
  _vec_len (conf->eal_init_args) -= 1;

  /* Set up DPDK eal and packet mbuf pool early. */

  int log_fds[2] = { 0 };
  if (pipe (log_fds) == 0)
    {
      if (fcntl (log_fds[1], F_SETFL, O_NONBLOCK) == 0)
	{
	  FILE *f = fdopen (log_fds[1], "a");
	  if (f && rte_openlog_stream (f) == 0)
	    {
	      clib_file_t t = { 0 };
	      t.read_function = dpdk_log_read_ready;
	      t.file_descriptor = log_fds[0];
	      t.description = format (0, "DPDK logging pipe");
	      clib_file_add (&file_main, &t);
	    }
	}
      else
	{
	  close (log_fds[0]);
	  close (log_fds[1]);
	}
    }

  vm = vlib_get_main ();

  /* make copy of args as rte_eal_init tends to mess up with arg array */
  for (i = 1; i < vec_len (conf->eal_init_args); i++)
    conf->eal_init_args_str = format (conf->eal_init_args_str, "%s ",
				      conf->eal_init_args[i]);

  vec_terminate_c_string (conf->eal_init_args_str);

  dpdk_log_notice ("EAL init args: %s", conf->eal_init_args_str);
  ret = rte_eal_init (vec_len (conf->eal_init_args),
		      (char **) conf->eal_init_args);

  /* enable the AVX-512 vPMDs in DPDK */
  if (clib_cpu_supports_avx512_bitalg () &&
      conf->max_simd_bitwidth == DPDK_MAX_SIMD_BITWIDTH_DEFAULT)
    rte_vect_set_max_simd_bitwidth (RTE_VECT_SIMD_512);
  else if (conf->max_simd_bitwidth != DPDK_MAX_SIMD_BITWIDTH_DEFAULT)
    rte_vect_set_max_simd_bitwidth (conf->max_simd_bitwidth ==
					DPDK_MAX_SIMD_BITWIDTH_256 ?
				      RTE_VECT_SIMD_256 :
				      RTE_VECT_SIMD_512);

  /* lazy umount hugepages */
  umount2 ((char *) huge_dir_path, MNT_DETACH);
  rmdir ((char *) huge_dir_path);
  vec_free (huge_dir_path);

  if (ret < 0)
    return clib_error_return (0, "rte_eal_init returned %d", ret);

  /* main thread 1st */
  if ((error = dpdk_buffer_pools_create (vm)))
    return error;

done:
  return error;
}

VLIB_CONFIG_FUNCTION (dpdk_config, "dpdk");

void
dpdk_update_link_state (dpdk_device_t * xd, f64 now)
{
  vnet_main_t *vnm = vnet_get_main ();
  struct rte_eth_link prev_link = xd->link;
  u32 hw_flags = 0;
  u8 hw_flags_chg = 0;

  xd->time_last_link_update = now ? now : xd->time_last_link_update;
  clib_memset (&xd->link, 0, sizeof (xd->link));
  rte_eth_link_get_nowait (xd->port_id, &xd->link);

  if (LINK_STATE_ELOGS)
    {
      ELOG_TYPE_DECLARE (e) =
      {
      .format =
	  "update-link-state: sw_if_index %d, admin_up %d,"
	  "old link_state %d new link_state %d",.format_args = "i4i1i1i1",};

      struct
      {
	u32 sw_if_index;
	u8 admin_up;
	u8 old_link_state;
	u8 new_link_state;
      } *ed;
      ed = ELOG_DATA (&vlib_global_main.elog_main, e);
      ed->sw_if_index = xd->sw_if_index;
      ed->admin_up = (xd->flags & DPDK_DEVICE_FLAG_ADMIN_UP) != 0;
      ed->old_link_state = (u8)
	vnet_hw_interface_is_link_up (vnm, xd->hw_if_index);
      ed->new_link_state = (u8) xd->link.link_status;
    }

  if ((xd->link.link_duplex != prev_link.link_duplex))
    {
      hw_flags_chg = 1;
      switch (xd->link.link_duplex)
	{
	case ETH_LINK_HALF_DUPLEX:
	  hw_flags |= VNET_HW_INTERFACE_FLAG_HALF_DUPLEX;
	  break;
	case ETH_LINK_FULL_DUPLEX:
	  hw_flags |= VNET_HW_INTERFACE_FLAG_FULL_DUPLEX;
	  break;
	default:
	  break;
	}
    }
  if (xd->link.link_speed != prev_link.link_speed)
    vnet_hw_interface_set_link_speed (vnm, xd->hw_if_index,
				      xd->link.link_speed * 1000);

  if (xd->link.link_status != prev_link.link_status)
    {
      hw_flags_chg = 1;

      if (xd->link.link_status)
	hw_flags |= VNET_HW_INTERFACE_FLAG_LINK_UP;
    }

  if (hw_flags_chg)
    {
      if (LINK_STATE_ELOGS)
	{
	  ELOG_TYPE_DECLARE (e) =
	  {
	  .format =
	      "update-link-state: sw_if_index %d, new flags %d",.format_args
	      = "i4i4",};

	  struct
	  {
	    u32 sw_if_index;
	    u32 flags;
	  } *ed;
	  ed = ELOG_DATA (&vlib_global_main.elog_main, e);
	  ed->sw_if_index = xd->sw_if_index;
	  ed->flags = hw_flags;
	}
      vnet_hw_interface_set_flags (vnm, xd->hw_if_index, hw_flags);
    }
}

static uword
dpdk_process (vlib_main_t * vm, vlib_node_runtime_t * rt, vlib_frame_t * f)
{
  clib_error_t *error;
  dpdk_main_t *dm = &dpdk_main;
  dpdk_device_t *xd;
  vlib_thread_main_t *tm = vlib_get_thread_main ();

  error = dpdk_lib_init (dm);

  if (error)
    clib_error_report (error);

  if (dpdk_cryptodev_init)
    {
      error = dpdk_cryptodev_init (vm);
      if (error)
	{
	  vlib_log_warn (dpdk_main.log_cryptodev, "%U", format_clib_error,
			 error);
	  clib_error_free (error);
	}
    }

  tm->worker_thread_release = 1;

  f64 now = vlib_time_now (vm);
  vec_foreach (xd, dm->devices)
  {
    dpdk_update_link_state (xd, now);
  }

  while (1)
    {
      /*
       * check each time through the loop in case intervals are changed
       */
      f64 min_wait = dm->link_state_poll_interval < dm->stat_poll_interval ?
	dm->link_state_poll_interval : dm->stat_poll_interval;

      vlib_process_wait_for_event_or_clock (vm, min_wait);

      if (dm->admin_up_down_in_progress)
	/* skip the poll if an admin up down is in progress (on any interface) */
	continue;

      vec_foreach (xd, dm->devices)
      {
	f64 now = vlib_time_now (vm);
	if ((now - xd->time_last_stats_update) >= dm->stat_poll_interval)
	  dpdk_update_counters (xd, now);
	if ((now - xd->time_last_link_update) >= dm->link_state_poll_interval)
	  dpdk_update_link_state (xd, now);

      }
    }

  return 0;
}

/* *INDENT-OFF* */
VLIB_REGISTER_NODE (dpdk_process_node,static) = {
    .function = dpdk_process,
    .type = VLIB_NODE_TYPE_PROCESS,
    .name = "dpdk-process",
    .process_log2_n_stack_bytes = 17,
};
/* *INDENT-ON* */

static clib_error_t *
dpdk_init (vlib_main_t * vm)
{
  dpdk_main_t *dm = &dpdk_main;
  clib_error_t *error = 0;

  /* verify that structs are cacheline aligned */
  STATIC_ASSERT (offsetof (dpdk_device_t, cacheline0) == 0,
		 "Cache line marker must be 1st element in dpdk_device_t");
  STATIC_ASSERT (offsetof (dpdk_device_t, cacheline1) ==
		 CLIB_CACHE_LINE_BYTES,
		 "Data in cache line 0 is bigger than cache line size");
  STATIC_ASSERT (offsetof (frame_queue_trace_t, cacheline0) == 0,
		 "Cache line marker must be 1st element in frame_queue_trace_t");

  dpdk_cli_reference ();

  dm->conf = &dpdk_config_main;

  vec_add1 (dm->conf->eal_init_args, (u8 *) "vnet");

  dm->stat_poll_interval = DPDK_STATS_POLL_INTERVAL;
  dm->link_state_poll_interval = DPDK_LINK_POLL_INTERVAL;

  dm->log_default = vlib_log_register_class ("dpdk", 0);
  dm->log_cryptodev = vlib_log_register_class ("dpdk", "cryptodev");

  return error;
}

VLIB_INIT_FUNCTION (dpdk_init);

static clib_error_t *
dpdk_worker_thread_init (vlib_main_t *vm)
{
  if (rte_thread_register () < 0)
    clib_panic ("dpdk: cannot register thread %u - %s", vm->thread_index,
		rte_strerror (rte_errno));
  return 0;
}

VLIB_WORKER_INIT_FUNCTION (dpdk_worker_thread_init);