af_packet: move to plugin

Type: improvement

Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
Change-Id: I3ec857adb3a9e8a778072a202a4d23f4101e83b2

9 files changed, 0 insertions, 3524 deletions

diff --git a/src/vnet/devices/af_packet/FEATURE.yaml b/src/vnet/devices/af_packet/FEATURE.yaml
deleted file mode 100644
index 4a11ea2beb5..00000000000
--- a/src/vnet/devices/af_packet/FEATURE.yaml
+++ /dev/null
@@ -1,16 +0,0 @@
----
-name: host-interface Device AF_PACKET
-maintainer: Damjan Marion <damarion@cisco.com>
-features:
-  - L4 checksum offload
-  - GSO offload
-description: "Create a host interface that will attach to a linux AF_PACKET
-              interface, one side of a veth pair. The veth pair must
-              already exist. Once created, a new host interface will
-              exist in VPP with the name 'host-<ifname>', where '<ifname>'
-              is the name of the specified veth pair. Use the 'show interface'
-              command to display host interface details."
-missing:
-  - API dump details beyond sw_if_index and name
-state: production
-properties: [API, CLI, STATS, MULTITHREAD]
diff --git a/src/vnet/devices/af_packet/af_packet.api b/src/vnet/devices/af_packet/af_packet.api
deleted file mode 100644
index a12da37796a..00000000000
--- a/src/vnet/devices/af_packet/af_packet.api
+++ /dev/null
@@ -1,192 +0,0 @@
-/*
- * Copyright (c) 2015-2016 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.
- */
-
-option version = "2.0.0";
-
-import "vnet/interface_types.api";
-import "vnet/ethernet/ethernet_types.api";
-
-/** \brief Create host-interface
-    @param client_index - opaque cookie to identify the sender
-    @param context - sender context, to match reply w/ request
-    @param hw_addr - interface MAC
-    @param use_random_hw_addr - use random generated MAC
-    @param host_if_name - interface name
-*/
-define af_packet_create
-{
-  u32 client_index;
-  u32 context;
-
-  vl_api_mac_address_t hw_addr;
-  bool use_random_hw_addr;
-  string host_if_name[64];
-};
-
-/** \brief Create host-interface response
-    @param context - sender context, to match reply w/ request
-    @param retval - return value for request
-*/
-define af_packet_create_reply
-{
-  u32 context;
-  i32 retval;
-  vl_api_interface_index_t sw_if_index;
-};
-
-/** \brief Create host-interface
-    @param client_index - opaque cookie to identify the sender
-    @param context - sender context, to match reply w/ request
-    @param hw_addr - interface MAC
-    @param use_random_hw_addr - use random generated MAC
-    @param host_if_name - interface name
-    @param rx_frame_size - frame size for RX
-    @param tx_frame_size - frame size for TX
-    @param rx_frames_per_block - frames per block for RX
-    @param tx_frames_per_block - frames per block for TX
-    @param flags - flags for the af_packet interface creation
-    @param num_rx_queues - number of rx queues
-*/
-define af_packet_create_v2
-{
-  u32 client_index;
-  u32 context;
-
-  vl_api_mac_address_t hw_addr;
-  bool use_random_hw_addr;
-  string host_if_name[64];
-  u32 rx_frame_size;
-  u32 tx_frame_size;
-  u32 rx_frames_per_block;
-  u32 tx_frames_per_block;
-  u32 flags;
-  u16 num_rx_queues [default=1];
-};
-
-/** \brief Create host-interface response
-    @param context - sender context, to match reply w/ request
-    @param retval - return value for request
-*/
-define af_packet_create_v2_reply
-{
-  u32 context;
-  i32 retval;
-  vl_api_interface_index_t sw_if_index;
-};
-
-enum af_packet_mode {
-  AF_PACKET_API_MODE_ETHERNET = 1, /* mode ethernet */
-  AF_PACKET_API_MODE_IP = 2, /* mode ip */
-};
-
-enum af_packet_flags {
-  AF_PACKET_API_FLAG_QDISC_BYPASS = 1, /* enable the qdisc bypass */
-  AF_PACKET_API_FLAG_CKSUM_GSO = 2, /* enable checksum/gso */
-  AF_PACKET_API_FLAG_VERSION_2 = 8 [backwards_compatible], /* af packet v2, default is v3 */
-};
-
-/** \brief Create host-interface
-    @param client_index - opaque cookie to identify the sender
-    @param context - sender context, to match reply w/ request
-    @param mode - 1 - Ethernet, 2 - IP
-    @param hw_addr - interface MAC
-    @param use_random_hw_addr - use random generated MAC
-    @param host_if_name - interface name
-    @param rx_frame_size - frame size for RX
-    @param tx_frame_size - frame size for TX
-    @param rx_frames_per_block - frames per block for RX
-    @param tx_frames_per_block - frames per block for TX
-    @param flags - flags for the af_packet interface creation
-    @param num_rx_queues - number of rx queues
-    @param num_tx_queues - number of tx queues
-*/
-define af_packet_create_v3
-{
-  u32 client_index;
-  u32 context;
-
-  vl_api_af_packet_mode_t mode;
-  vl_api_mac_address_t hw_addr;
-  bool use_random_hw_addr;
-  string host_if_name[64];
-  u32 rx_frame_size;
-  u32 tx_frame_size;
-  u32 rx_frames_per_block;
-  u32 tx_frames_per_block;
-  vl_api_af_packet_flags_t flags;
-  u16 num_rx_queues [default=1];
-  u16 num_tx_queues [default=1];
-};
-
-/** \brief Create host-interface response
-    @param context - sender context, to match reply w/ request
-    @param retval - return value for request
-*/
-define af_packet_create_v3_reply
-{
-  u32 context;
-  i32 retval;
-  vl_api_interface_index_t sw_if_index;
-};
-
-/** \brief Delete host-interface
-    @param client_index - opaque cookie to identify the sender
-    @param context - sender context, to match reply w/ request
-    @param host_if_name - interface name
-*/
-autoreply define af_packet_delete
-{
-  u32 client_index;
-  u32 context;
-
-  string host_if_name[64];
-};
-
-/** \brief Set l4 offload checksum calculation
-    @param client_index - opaque cookie to identify the sender
-    @param context - sender context, to match reply w/ request
-*/
-autoreply define af_packet_set_l4_cksum_offload
-{
-  u32 client_index;
-  u32 context;
-
-  vl_api_interface_index_t sw_if_index;
-  bool set;
-};
-
-/** \brief Dump af_packet interfaces request */
-define af_packet_dump
-{
-  u32 client_index;
-  u32 context;
-};
-
-/** \brief Reply for af_packet dump request
-    @param sw_if_index - software index of af_packet interface
-    @param host_if_name - interface name
-*/
-define af_packet_details
-{
-  u32 context;
-  vl_api_interface_index_t sw_if_index;
-  string host_if_name[64];
-};
-
-/*
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
diff --git a/src/vnet/devices/af_packet/af_packet.c b/src/vnet/devices/af_packet/af_packet.c
deleted file mode 100644
index f5493dd088e..00000000000
--- a/src/vnet/devices/af_packet/af_packet.c
+++ /dev/null
@@ -1,879 +0,0 @@
-/*
- *------------------------------------------------------------------
- * af_packet.c - linux kernel packet interface
- *
- * Copyright (c) 2016 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 <linux/if_ether.h>
-#include <linux/if_packet.h>
-#include <sys/ioctl.h>
-#include <net/if.h>
-#include <dirent.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <fcntl.h>
-
-#include <vppinfra/linux/sysfs.h>
-#include <vlib/vlib.h>
-#include <vlib/unix/unix.h>
-#include <vnet/ip/ip.h>
-#include <vnet/devices/netlink.h>
-#include <vnet/ethernet/ethernet.h>
-#include <vnet/interface/rx_queue_funcs.h>
-#include <vnet/interface/tx_queue_funcs.h>
-
-#include <vnet/devices/af_packet/af_packet.h>
-
-af_packet_main_t af_packet_main;
-
-VNET_HW_INTERFACE_CLASS (af_packet_ip_device_hw_interface_class, static) = {
-  .name = "af-packet-ip-device",
-  .flags = VNET_HW_INTERFACE_CLASS_FLAG_P2P,
-};
-
-#define AF_PACKET_DEFAULT_TX_FRAMES_PER_BLOCK 1024
-#define AF_PACKET_DEFAULT_TX_FRAME_SIZE	      (2048 * 33) // GSO packet of 64KB
-#define AF_PACKET_TX_BLOCK_NR		1
-
-#define AF_PACKET_DEFAULT_RX_FRAMES_PER_BLOCK_V2 1024
-#define AF_PACKET_DEFAULT_RX_FRAME_SIZE_V2	 (2048 * 33) // GSO packet of 64KB
-#define AF_PACKET_RX_BLOCK_NR_V2		 1
-
-#define AF_PACKET_DEFAULT_RX_FRAMES_PER_BLOCK 32
-#define AF_PACKET_DEFAULT_RX_FRAME_SIZE	      2048
-#define AF_PACKET_RX_BLOCK_NR		      160
-
-/*defined in net/if.h but clashes with dpdk headers */
-unsigned int if_nametoindex (const char *ifname);
-
-static clib_error_t *
-af_packet_eth_set_max_frame_size (vnet_main_t *vnm, vnet_hw_interface_t *hi,
-				  u32 frame_size)
-{
-  clib_error_t *error, *rv;
-  af_packet_main_t *apm = &af_packet_main;
-  af_packet_if_t *apif = pool_elt_at_index (apm->interfaces, hi->dev_instance);
-
-  error = vnet_netlink_set_link_mtu (apif->host_if_index,
-				     frame_size + hi->frame_overhead);
-
-  if (error)
-    {
-      vlib_log_err (apm->log_class, "netlink failed to change MTU: %U",
-		    format_clib_error, error);
-      rv = vnet_error (VNET_ERR_SYSCALL_ERROR_1, "netlink error: %U",
-		       format_clib_error, error);
-      clib_error_free (error);
-      return rv;
-    }
-  else
-    apif->host_mtu = frame_size + hi->frame_overhead;
-  return 0;
-}
-
-static int
-af_packet_read_mtu (af_packet_if_t *apif)
-{
-  af_packet_main_t *apm = &af_packet_main;
-  clib_error_t *error;
-  error = vnet_netlink_get_link_mtu (apif->host_if_index, &apif->host_mtu);
-  if (error)
-    {
-      vlib_log_err (apm->log_class, "netlink failed to get MTU: %U",
-		    format_clib_error, error);
-      clib_error_free (error);
-      return VNET_API_ERROR_SYSCALL_ERROR_1;
-    }
-  return 0;
-}
-
-static clib_error_t *
-af_packet_fd_read_ready (clib_file_t * uf)
-{
-  vnet_main_t *vnm = vnet_get_main ();
-
-  /* Schedule the rx node */
-  vnet_hw_if_rx_queue_set_int_pending (vnm, uf->private_data);
-  return 0;
-}
-
-static int
-is_bridge (const u8 * host_if_name)
-{
-  u8 *s;
-  DIR *dir = NULL;
-
-  s = format (0, "/sys/class/net/%s/bridge%c", host_if_name, 0);
-  dir = opendir ((char *) s);
-  vec_free (s);
-
-  if (dir)
-    {
-      closedir (dir);
-      return 0;
-    }
-
-  return -1;
-}
-
-static void
-af_packet_set_rx_queues (vlib_main_t *vm, af_packet_if_t *apif)
-{
-  vnet_main_t *vnm = vnet_get_main ();
-  af_packet_queue_t *rx_queue;
-
-  vnet_hw_if_set_input_node (vnm, apif->hw_if_index,
-			     af_packet_input_node.index);
-
-  vec_foreach (rx_queue, apif->rx_queues)
-    {
-      rx_queue->queue_index = vnet_hw_if_register_rx_queue (
-	vnm, apif->hw_if_index, rx_queue->queue_id, VNET_HW_IF_RXQ_THREAD_ANY);
-
-      {
-	clib_file_t template = { 0 };
-	template.read_function = af_packet_fd_read_ready;
-	template.file_descriptor = rx_queue->fd;
-	template.private_data = rx_queue->queue_index;
-	template.flags = UNIX_FILE_EVENT_EDGE_TRIGGERED;
-	template.description =
-	  format (0, "%U queue %u", format_af_packet_device_name,
-		  apif->dev_instance, rx_queue->queue_id);
-	rx_queue->clib_file_index = clib_file_add (&file_main, &template);
-      }
-      vnet_hw_if_set_rx_queue_file_index (vnm, rx_queue->queue_index,
-					  rx_queue->clib_file_index);
-      vnet_hw_if_set_rx_queue_mode (vnm, rx_queue->queue_index,
-				    VNET_HW_IF_RX_MODE_INTERRUPT);
-      rx_queue->mode = VNET_HW_IF_RX_MODE_INTERRUPT;
-    }
-  vnet_hw_if_update_runtime_data (vnm, apif->hw_if_index);
-}
-
-static void
-af_packet_set_tx_queues (vlib_main_t *vm, af_packet_if_t *apif)
-{
-  vnet_main_t *vnm = vnet_get_main ();
-  af_packet_main_t *apm = &af_packet_main;
-  af_packet_queue_t *tx_queue;
-
-  vec_foreach (tx_queue, apif->tx_queues)
-    {
-      tx_queue->queue_index = vnet_hw_if_register_tx_queue (
-	vnm, apif->hw_if_index, tx_queue->queue_id);
-    }
-
-  if (apif->num_txqs == 0)
-    {
-      vlib_log_err (apm->log_class, "Interface %U has 0 txq",
-		    format_vnet_hw_if_index_name, vnm, apif->hw_if_index);
-      return;
-    }
-
-  for (u32 j = 0; j < vlib_get_n_threads (); j++)
-    {
-      u32 qi = apif->tx_queues[j % apif->num_txqs].queue_index;
-      vnet_hw_if_tx_queue_assign_thread (vnm, qi, j);
-    }
-
-  vnet_hw_if_update_runtime_data (vnm, apif->hw_if_index);
-}
-
-static int
-create_packet_sock (int host_if_index, tpacket_req_u_t *rx_req,
-		    tpacket_req_u_t *tx_req, int *fd, af_packet_ring_t *ring,
-		    u32 fanout_id, af_packet_if_flags_t *flags, int ver)
-{
-  af_packet_main_t *apm = &af_packet_main;
-  struct sockaddr_ll sll;
-  socklen_t req_sz = sizeof (tpacket_req3_t);
-  int ret;
-  u32 ring_sz = 0;
-
-  if ((*fd = socket (AF_PACKET, SOCK_RAW, htons (ETH_P_ALL))) < 0)
-    {
-      vlib_log_err (apm->log_class,
-		    "Failed to create AF_PACKET socket: %s (errno %d)",
-		    strerror (errno), errno);
-      ret = VNET_API_ERROR_SYSCALL_ERROR_1;
-      goto error;
-    }
-
-  /* bind before rx ring is cfged so we don't receive packets from other interfaces */
-  clib_memset (&sll, 0, sizeof (sll));
-  sll.sll_family = PF_PACKET;
-  sll.sll_protocol = htons (ETH_P_ALL);
-  sll.sll_ifindex = host_if_index;
-  if (bind (*fd, (struct sockaddr *) &sll, sizeof (sll)) < 0)
-    {
-      vlib_log_err (apm->log_class,
-		    "Failed to bind rx packet socket: %s (errno %d)",
-		    strerror (errno), errno);
-      ret = VNET_API_ERROR_SYSCALL_ERROR_1;
-      goto error;
-    }
-
-  if (setsockopt (*fd, SOL_PACKET, PACKET_VERSION, &ver, sizeof (ver)) < 0)
-    {
-      vlib_log_err (apm->log_class,
-		    "Failed to set rx packet interface version: %s (errno %d)",
-		    strerror (errno), errno);
-      ret = VNET_API_ERROR_SYSCALL_ERROR_1;
-      goto error;
-    }
-
-  int opt = 1;
-  if (setsockopt (*fd, SOL_PACKET, PACKET_LOSS, &opt, sizeof (opt)) < 0)
-    {
-      vlib_log_err (
-	apm->log_class,
-	"Failed to set packet tx ring error handling option: %s (errno %d)",
-	strerror (errno), errno);
-      ret = VNET_API_ERROR_SYSCALL_ERROR_1;
-      goto error;
-    }
-
-  if (*flags & AF_PACKET_IF_FLAGS_CKSUM_GSO)
-    {
-
-      int opt2 = 1;
-      if (setsockopt (*fd, SOL_PACKET, PACKET_VNET_HDR, &opt2, sizeof (opt2)) <
-	  0)
-	{
-	  // remove the flag
-	  *flags &= ~AF_PACKET_IF_FLAGS_CKSUM_GSO;
-	  vlib_log_debug (apm->log_class,
-			  "Failed to set packet vnet hdr error handling "
-			  "option: %s (errno %d)",
-			  strerror (errno), errno);
-	}
-    }
-
-#if defined(PACKET_QDISC_BYPASS)
-  if (*flags & AF_PACKET_IF_FLAGS_QDISC_BYPASS)
-    /* Introduced with Linux 3.14 so the ifdef should eventually be removed  */
-    if (setsockopt (*fd, SOL_PACKET, PACKET_QDISC_BYPASS, &opt, sizeof (opt)) <
-	0)
-      {
-	// remove the flag
-	*flags &= ~AF_PACKET_IF_FLAGS_QDISC_BYPASS;
-	vlib_log_debug (apm->log_class,
-			"Failed to set qdisc bypass error "
-			"handling option: %s (errno %d)",
-			strerror (errno), errno);
-      }
-#endif
-
-  if (rx_req)
-    {
-      if (*flags & AF_PACKET_IF_FLAGS_FANOUT)
-	{
-	  int fanout = ((fanout_id & 0xffff) | ((PACKET_FANOUT_HASH) << 16));
-	  if (setsockopt (*fd, SOL_PACKET, PACKET_FANOUT, &fanout,
-			  sizeof (fanout)) < 0)
-	    {
-	      // remove the flag
-	      *flags &= ~AF_PACKET_IF_FLAGS_FANOUT;
-	      vlib_log_err (apm->log_class,
-			    "Failed to set fanout options: %s (errno %d)",
-			    strerror (errno), errno);
-	      ret = VNET_API_ERROR_SYSCALL_ERROR_1;
-	      goto error;
-	    }
-	}
-      if (ver == TPACKET_V2)
-	{
-	  req_sz = sizeof (tpacket_req_t);
-	  ring_sz += rx_req->req.tp_block_size * rx_req->req.tp_block_nr;
-	}
-      else
-	ring_sz += rx_req->req3.tp_block_size * rx_req->req3.tp_block_nr;
-      if (setsockopt (*fd, SOL_PACKET, PACKET_RX_RING, rx_req, req_sz) < 0)
-	{
-	  vlib_log_err (apm->log_class,
-			"Failed to set packet rx ring options: %s (errno %d)",
-			strerror (errno), errno);
-	  ret = VNET_API_ERROR_SYSCALL_ERROR_1;
-	  goto error;
-	}
-    }
-
-  if (tx_req)
-    {
-      if (ver == TPACKET_V2)
-	{
-	  req_sz = sizeof (tpacket_req_t);
-	  ring_sz += tx_req->req.tp_block_size * tx_req->req.tp_block_nr;
-	}
-      else
-	ring_sz += tx_req->req3.tp_block_size * tx_req->req3.tp_block_nr;
-      if (setsockopt (*fd, SOL_PACKET, PACKET_TX_RING, tx_req, req_sz) < 0)
-	{
-	  vlib_log_err (apm->log_class,
-			"Failed to set packet tx ring options: %s (errno %d)",
-			strerror (errno), errno);
-	  ret = VNET_API_ERROR_SYSCALL_ERROR_1;
-	  goto error;
-	}
-    }
-  ring->ring_start_addr = mmap (NULL, ring_sz, PROT_READ | PROT_WRITE,
-				MAP_SHARED | MAP_LOCKED, *fd, 0);
-  if (ring->ring_start_addr == MAP_FAILED)
-    {
-      vlib_log_err (apm->log_class, "mmap failure: %s (errno %d)",
-		    strerror (errno), errno);
-      ret = VNET_API_ERROR_SYSCALL_ERROR_1;
-      goto error;
-    }
-
-  ring->ring_size = ring_sz;
-
-  return 0;
-error:
-  if (*fd >= 0)
-    {
-      close (*fd);
-      *fd = -1;
-    }
-  return ret;
-}
-
-int
-af_packet_queue_init (vlib_main_t *vm, af_packet_if_t *apif,
-		      af_packet_create_if_arg_t *arg,
-		      af_packet_queue_t *rx_queue, af_packet_queue_t *tx_queue,
-		      u8 queue_id)
-{
-  af_packet_main_t *apm = &af_packet_main;
-  tpacket_req_u_t *rx_req = 0;
-  tpacket_req_u_t *tx_req = 0;
-  int ret, fd = -1;
-  af_packet_ring_t ring = { 0 };
-  u8 *ring_addr = 0;
-  u32 rx_frames_per_block, tx_frames_per_block;
-  u32 rx_frame_size, tx_frame_size;
-  u32 i = 0;
-
-  if (rx_queue)
-    {
-      rx_frames_per_block = arg->rx_frames_per_block ?
-				    arg->rx_frames_per_block :
-				    ((apif->version == TPACKET_V3) ?
-				       AF_PACKET_DEFAULT_RX_FRAMES_PER_BLOCK :
-				       AF_PACKET_DEFAULT_RX_FRAMES_PER_BLOCK_V2);
-
-      rx_frame_size =
-	arg->rx_frame_size ?
-		arg->rx_frame_size :
-		((apif->version == TPACKET_V3) ? AF_PACKET_DEFAULT_RX_FRAME_SIZE :
-						 AF_PACKET_DEFAULT_RX_FRAME_SIZE_V2);
-      vec_validate (rx_queue->rx_req, 0);
-      rx_queue->rx_req->req.tp_block_size =
-	rx_frame_size * rx_frames_per_block;
-      rx_queue->rx_req->req.tp_frame_size = rx_frame_size;
-      rx_queue->rx_req->req.tp_block_nr = (apif->version == TPACKET_V3) ?
-						  AF_PACKET_RX_BLOCK_NR :
-						  AF_PACKET_RX_BLOCK_NR_V2;
-      rx_queue->rx_req->req.tp_frame_nr =
-	rx_queue->rx_req->req.tp_block_nr * rx_frames_per_block;
-      if (apif->version == TPACKET_V3)
-	{
-	  rx_queue->rx_req->req3.tp_retire_blk_tov = 1; // 1 ms block timout
-	  rx_queue->rx_req->req3.tp_feature_req_word = 0;
-	  rx_queue->rx_req->req3.tp_sizeof_priv = 0;
-	}
-      rx_req = rx_queue->rx_req;
-    }
-  if (tx_queue)
-    {
-      tx_frames_per_block = arg->tx_frames_per_block ?
-				    arg->tx_frames_per_block :
-				    AF_PACKET_DEFAULT_TX_FRAMES_PER_BLOCK;
-      tx_frame_size = arg->tx_frame_size ? arg->tx_frame_size :
-						 AF_PACKET_DEFAULT_TX_FRAME_SIZE;
-
-      vec_validate (tx_queue->tx_req, 0);
-      tx_queue->tx_req->req.tp_block_size =
-	tx_frame_size * tx_frames_per_block;
-      tx_queue->tx_req->req.tp_frame_size = tx_frame_size;
-      tx_queue->tx_req->req.tp_block_nr = AF_PACKET_TX_BLOCK_NR;
-      tx_queue->tx_req->req.tp_frame_nr =
-	AF_PACKET_TX_BLOCK_NR * tx_frames_per_block;
-      if (apif->version == TPACKET_V3)
-	{
-	  tx_queue->tx_req->req3.tp_retire_blk_tov = 0;
-	  tx_queue->tx_req->req3.tp_sizeof_priv = 0;
-	  tx_queue->tx_req->req3.tp_feature_req_word = 0;
-	}
-      tx_req = tx_queue->tx_req;
-    }
-
-  if (rx_queue || tx_queue)
-    {
-      ret =
-	create_packet_sock (apif->host_if_index, rx_req, tx_req, &fd, &ring,
-			    apif->dev_instance, &arg->flags, apif->version);
-
-      if (ret != 0)
-	goto error;
-
-      vec_add1 (apif->rings, ring);
-      ring_addr = ring.ring_start_addr;
-    }
-
-  if (rx_queue)
-    {
-      rx_queue->fd = fd;
-      vec_validate (rx_queue->rx_ring, rx_queue->rx_req->req.tp_block_nr - 1);
-      vec_foreach_index (i, rx_queue->rx_ring)
-	{
-	  rx_queue->rx_ring[i] =
-	    ring_addr + i * rx_queue->rx_req->req.tp_block_size;
-	}
-
-      rx_queue->next_rx_block = 0;
-      rx_queue->queue_id = queue_id;
-      rx_queue->is_rx_pending = 0;
-      ring_addr = ring_addr + rx_queue->rx_req->req.tp_block_size *
-				rx_queue->rx_req->req.tp_block_nr;
-    }
-
-  if (tx_queue)
-    {
-      tx_queue->fd = fd;
-      vec_validate (tx_queue->tx_ring, tx_queue->tx_req->req.tp_block_nr - 1);
-      vec_foreach_index (i, tx_queue->tx_ring)
-	{
-	  tx_queue->tx_ring[i] =
-	    ring_addr + i * tx_queue->tx_req->req.tp_block_size;
-	}
-
-      tx_queue->next_tx_frame = 0;
-      tx_queue->queue_id = queue_id;
-      tx_queue->is_tx_pending = 0;
-      clib_spinlock_init (&tx_queue->lockp);
-    }
-
-  return 0;
-error:
-  vlib_log_err (apm->log_class, "Failed to set queue %u error", queue_id);
-  if (rx_queue)
-    vec_free (rx_queue->rx_req);
-  if (tx_queue)
-    vec_free (tx_queue->tx_req);
-  return ret;
-}
-
-int
-af_packet_device_init (vlib_main_t *vm, af_packet_if_t *apif,
-		       af_packet_create_if_arg_t *args)
-{
-  af_packet_main_t *apm = &af_packet_main;
-  af_packet_queue_t *rx_queue = 0;
-  af_packet_queue_t *tx_queue = 0;
-  u16 nq = clib_min (args->num_rxqs, args->num_txqs);
-  u16 i = 0;
-  int ret = 0;
-
-  // enable fanout feature for multi-rxqs
-  if (args->num_rxqs > 1)
-    args->flags |= AF_PACKET_IF_FLAGS_FANOUT;
-
-  vec_validate (apif->rx_queues, args->num_rxqs - 1);
-  vec_validate (apif->tx_queues, args->num_txqs - 1);
-
-  for (; i < nq; i++)
-    {
-      rx_queue = vec_elt_at_index (apif->rx_queues, i);
-      tx_queue = vec_elt_at_index (apif->tx_queues, i);
-      ret = af_packet_queue_init (vm, apif, args, rx_queue, tx_queue, i);
-      if (ret != 0)
-	goto error;
-    }
-
-  if (args->num_rxqs > args->num_txqs)
-    {
-      for (; i < args->num_rxqs; i++)
-	{
-	  rx_queue = vec_elt_at_index (apif->rx_queues, i);
-	  ret = af_packet_queue_init (vm, apif, args, rx_queue, 0, i);
-	  if (ret != 0)
-	    goto error;
-	}
-    }
-  else if (args->num_txqs > args->num_rxqs)
-    {
-      for (; i < args->num_txqs; i++)
-	{
-	  tx_queue = vec_elt_at_index (apif->tx_queues, i);
-	  ret = af_packet_queue_init (vm, apif, args, 0, tx_queue, i);
-	  if (ret != 0)
-	    goto error;
-	}
-    }
-
-  apif->num_rxqs = args->num_rxqs;
-  apif->num_txqs = args->num_txqs;
-
-  return 0;
-error:
-  vlib_log_err (apm->log_class, "Failed to init device error");
-  return ret;
-}
-
-int
-af_packet_create_if (af_packet_create_if_arg_t *arg)
-{
-  af_packet_main_t *apm = &af_packet_main;
-  vlib_main_t *vm = vlib_get_main ();
-  int fd2 = -1;
-  struct ifreq ifr;
-  af_packet_if_t *apif = 0;
-  u8 hw_addr[6];
-  vnet_sw_interface_t *sw;
-  vnet_main_t *vnm = vnet_get_main ();
-  vnet_hw_if_caps_t caps = VNET_HW_IF_CAP_INT_MODE;
-  uword *p;
-  uword if_index;
-  u8 *host_if_name_dup = 0;
-  int host_if_index = -1;
-  int ret = 0;
-
-  p = mhash_get (&apm->if_index_by_host_if_name, arg->host_if_name);
-  if (p)
-    {
-      apif = vec_elt_at_index (apm->interfaces, p[0]);
-      arg->sw_if_index = apif->sw_if_index;
-      return VNET_API_ERROR_IF_ALREADY_EXISTS;
-    }
-
-  host_if_name_dup = vec_dup (arg->host_if_name);
-
-  /*
-   * make sure host side of interface is 'UP' before binding AF_PACKET
-   * socket on it.
-   */
-  if ((fd2 = socket (AF_UNIX, SOCK_DGRAM, 0)) < 0)
-    {
-      vlib_log_debug (apm->log_class,
-		      "Failed to create AF_UNIX socket: %s (errno %d)",
-		      strerror (errno), errno);
-      ret = VNET_API_ERROR_SYSCALL_ERROR_1;
-      goto error;
-    }
-
-  clib_memcpy (ifr.ifr_name, (const char *) arg->host_if_name,
-	       vec_len (arg->host_if_name));
-  if (ioctl (fd2, SIOCGIFINDEX, &ifr) < 0)
-    {
-      vlib_log_debug (
-	apm->log_class,
-	"Failed to retrieve the interface (%s) index: %s (errno %d)",
-	arg->host_if_name, strerror (errno), errno);
-      ret = VNET_API_ERROR_INVALID_INTERFACE;
-      goto error;
-    }
-
-  host_if_index = ifr.ifr_ifindex;
-  if (ioctl (fd2, SIOCGIFFLAGS, &ifr) < 0)
-    {
-      vlib_log_debug (apm->log_class,
-		      "Failed to get the active flag: %s (errno %d)",
-		      strerror (errno), errno);
-      ret = VNET_API_ERROR_SYSCALL_ERROR_1;
-      goto error;
-    }
-
-  if (!(ifr.ifr_flags & IFF_UP))
-    {
-      ifr.ifr_flags |= IFF_UP;
-      if (ioctl (fd2, SIOCSIFFLAGS, &ifr) < 0)
-	{
-	  vlib_log_debug (apm->log_class,
-			  "Failed to set the active flag: %s (errno %d)",
-			  strerror (errno), errno);
-	  ret = VNET_API_ERROR_SYSCALL_ERROR_1;
-	  goto error;
-	}
-    }
-
-  if (fd2 > -1)
-    {
-      close (fd2);
-      fd2 = -1;
-    }
-
-  ret = is_bridge (arg->host_if_name);
-  if (ret == 0)			/* is a bridge, ignore state */
-    host_if_index = -1;
-
-  /* So far everything looks good, let's create interface */
-  pool_get (apm->interfaces, apif);
-  if_index = apif - apm->interfaces;
-
-  apif->dev_instance = if_index;
-  apif->host_if_index = host_if_index;
-  apif->host_if_name = host_if_name_dup;
-  apif->per_interface_next_index = ~0;
-  apif->mode = arg->mode;
-
-  if (arg->is_v2)
-    apif->version = TPACKET_V2;
-  else
-    apif->version = TPACKET_V3;
-
-  ret = af_packet_device_init (vm, apif, arg);
-  if (ret != 0)
-    goto error;
-
-  ret = af_packet_read_mtu (apif);
-  if (ret != 0)
-    goto error;
-
-
-  if (apif->mode != AF_PACKET_IF_MODE_IP)
-    {
-      vnet_eth_interface_registration_t eir = {};
-      /*use configured or generate random MAC address */
-      if (arg->hw_addr)
-	clib_memcpy (hw_addr, arg->hw_addr, 6);
-      else
-	{
-	  f64 now = vlib_time_now (vm);
-	  u32 rnd;
-	  rnd = (u32) (now * 1e6);
-	  rnd = random_u32 (&rnd);
-
-	  clib_memcpy (hw_addr + 2, &rnd, sizeof (rnd));
-	  hw_addr[0] = 2;
-	  hw_addr[1] = 0xfe;
-	}
-
-      eir.dev_class_index = af_packet_device_class.index;
-      eir.dev_instance = apif->dev_instance;
-      eir.address = hw_addr;
-      eir.cb.set_max_frame_size = af_packet_eth_set_max_frame_size;
-      apif->hw_if_index = vnet_eth_register_interface (vnm, &eir);
-    }
-  else
-    {
-      apif->hw_if_index = vnet_register_interface (
-	vnm, af_packet_device_class.index, apif->dev_instance,
-	af_packet_ip_device_hw_interface_class.index, apif->dev_instance);
-    }
-
-  sw = vnet_get_hw_sw_interface (vnm, apif->hw_if_index);
-  apif->sw_if_index = sw->sw_if_index;
-
-  af_packet_set_rx_queues (vm, apif);
-  af_packet_set_tx_queues (vm, apif);
-
-  if (arg->flags & AF_PACKET_IF_FLAGS_FANOUT)
-    apif->is_fanout_enabled = 1;
-
-  apif->is_qdisc_bypass_enabled =
-    (arg->flags & AF_PACKET_IF_FLAGS_QDISC_BYPASS);
-
-  if (arg->flags & AF_PACKET_IF_FLAGS_CKSUM_GSO)
-    apif->is_cksum_gso_enabled = 1;
-
-  if (apif->is_cksum_gso_enabled)
-    caps |= VNET_HW_IF_CAP_TCP_GSO | VNET_HW_IF_CAP_TX_IP4_CKSUM |
-	    VNET_HW_IF_CAP_TX_TCP_CKSUM | VNET_HW_IF_CAP_TX_UDP_CKSUM;
-
-  vnet_hw_if_set_caps (vnm, apif->hw_if_index, caps);
-  vnet_hw_interface_set_flags (vnm, apif->hw_if_index,
-			       VNET_HW_INTERFACE_FLAG_LINK_UP);
-
-  mhash_set_mem (&apm->if_index_by_host_if_name, host_if_name_dup, &if_index,
-		 0);
-  arg->sw_if_index = apif->sw_if_index;
-
-  return 0;
-
-error:
-  if (fd2 > -1)
-    {
-      close (fd2);
-      fd2 = -1;
-    }
-  vec_free (host_if_name_dup);
-  if (apif)
-    {
-      memset (apif, 0, sizeof (*apif));
-      pool_put (apm->interfaces, apif);
-    }
-  return ret;
-}
-
-static int
-af_packet_rx_queue_free (af_packet_if_t *apif, af_packet_queue_t *rx_queue)
-{
-  clib_file_del_by_index (&file_main, rx_queue->clib_file_index);
-  close (rx_queue->fd);
-  rx_queue->fd = -1;
-  rx_queue->rx_ring = NULL;
-  vec_free (rx_queue->rx_req);
-  rx_queue->rx_req = NULL;
-  return 0;
-}
-
-static int
-af_packet_tx_queue_free (af_packet_if_t *apif, af_packet_queue_t *tx_queue)
-{
-  close (tx_queue->fd);
-  tx_queue->fd = -1;
-  clib_spinlock_free (&tx_queue->lockp);
-  tx_queue->tx_ring = NULL;
-  vec_free (tx_queue->tx_req);
-  tx_queue->tx_req = NULL;
-  return 0;
-}
-
-static int
-af_packet_ring_free (af_packet_if_t *apif, af_packet_ring_t *ring)
-{
-  af_packet_main_t *apm = &af_packet_main;
-
-  if (ring)
-    {
-      // FIXME: unmap the memory
-      if (munmap (ring->ring_start_addr, ring->ring_size))
-	vlib_log_warn (apm->log_class,
-		       "Host interface %s could not free ring %p of size %u",
-		       apif->host_if_name, ring->ring_start_addr,
-		       ring->ring_size);
-      else
-	ring->ring_start_addr = 0;
-    }
-
-  return 0;
-}
-
-int
-af_packet_delete_if (u8 *host_if_name)
-{
-  vnet_main_t *vnm = vnet_get_main ();
-  af_packet_main_t *apm = &af_packet_main;
-  af_packet_if_t *apif;
-  af_packet_queue_t *rx_queue;
-  af_packet_queue_t *tx_queue;
-  af_packet_ring_t *ring;
-  uword *p;
-
-  p = mhash_get (&apm->if_index_by_host_if_name, host_if_name);
-  if (p == NULL)
-    {
-      vlib_log_warn (apm->log_class, "Host interface %s does not exist",
-		     host_if_name);
-      return VNET_API_ERROR_SYSCALL_ERROR_1;
-    }
-  apif = pool_elt_at_index (apm->interfaces, p[0]);
-
-  /* bring down the interface */
-  vnet_hw_interface_set_flags (vnm, apif->hw_if_index, 0);
-  if (apif->mode != AF_PACKET_IF_MODE_IP)
-    ethernet_delete_interface (vnm, apif->hw_if_index);
-  else
-    vnet_delete_hw_interface (vnm, apif->hw_if_index);
-
-  /* clean up */
-  vec_foreach (rx_queue, apif->rx_queues)
-    af_packet_rx_queue_free (apif, rx_queue);
-  vec_foreach (tx_queue, apif->tx_queues)
-    af_packet_tx_queue_free (apif, tx_queue);
-  vec_foreach (ring, apif->rings)
-    af_packet_ring_free (apif, ring);
-
-  vec_free (apif->rx_queues);
-  apif->rx_queues = NULL;
-  vec_free (apif->tx_queues);
-  apif->tx_queues = NULL;
-  vec_free (apif->rings);
-  apif->rings = NULL;
-
-  vec_free (apif->host_if_name);
-  apif->host_if_name = NULL;
-  apif->host_if_index = -1;
-
-  mhash_unset (&apm->if_index_by_host_if_name, host_if_name, p);
-
-  memset (apif, 0, sizeof (*apif));
-  pool_put (apm->interfaces, apif);
-
-  return 0;
-}
-
-int
-af_packet_set_l4_cksum_offload (u32 sw_if_index, u8 set)
-{
-  // deprecated ...
-  return 0;
-}
-
-int
-af_packet_dump_ifs (af_packet_if_detail_t ** out_af_packet_ifs)
-{
-  af_packet_main_t *apm = &af_packet_main;
-  af_packet_if_t *apif;
-  af_packet_if_detail_t *r_af_packet_ifs = NULL;
-  af_packet_if_detail_t *af_packet_if = NULL;
-
-  pool_foreach (apif, apm->interfaces)
-     {
-      vec_add2 (r_af_packet_ifs, af_packet_if, 1);
-      af_packet_if->sw_if_index = apif->sw_if_index;
-      if (apif->host_if_name)
-	{
-	  clib_memcpy (af_packet_if->host_if_name, apif->host_if_name,
-		       MIN (ARRAY_LEN (af_packet_if->host_if_name) - 1,
-		       strlen ((const char *) apif->host_if_name)));
-	}
-    }
-
-  *out_af_packet_ifs = r_af_packet_ifs;
-
-  return 0;
-}
-
-static clib_error_t *
-af_packet_init (vlib_main_t * vm)
-{
-  af_packet_main_t *apm = &af_packet_main;
-  vlib_thread_main_t *tm = vlib_get_thread_main ();
-
-  clib_memset (apm, 0, sizeof (af_packet_main_t));
-
-  mhash_init_vec_string (&apm->if_index_by_host_if_name, sizeof (uword));
-
-  vec_validate_aligned (apm->rx_buffers, tm->n_vlib_mains - 1,
-			CLIB_CACHE_LINE_BYTES);
-
-  apm->log_class = vlib_log_register_class ("af_packet", 0);
-  vlib_log_debug (apm->log_class, "initialized");
-
-  return 0;
-}
-
-VLIB_INIT_FUNCTION (af_packet_init);
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
diff --git a/src/vnet/devices/af_packet/af_packet.h b/src/vnet/devices/af_packet/af_packet.h
deleted file mode 100644
index 7aa5e6d5b9a..00000000000
--- a/src/vnet/devices/af_packet/af_packet.h
+++ /dev/null
@@ -1,179 +0,0 @@
-/*
- *------------------------------------------------------------------
- * af_packet.h - linux kernel packet interface header file
- *
- * Copyright (c) 2016 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 <linux/if_packet.h>
-
-#include <vppinfra/lock.h>
-#include <vlib/log.h>
-
-typedef struct tpacket_block_desc block_desc_t;
-typedef struct tpacket_req tpacket_req_t;
-typedef struct tpacket_req3 tpacket_req3_t;
-typedef struct tpacket2_hdr tpacket2_hdr_t;
-typedef struct tpacket3_hdr tpacket3_hdr_t;
-
-typedef union _tpacket_req_u
-{
-  tpacket_req_t req;
-  tpacket_req3_t req3;
-} tpacket_req_u_t;
-
-typedef enum
-{
-  AF_PACKET_IF_MODE_ETHERNET = 1,
-  AF_PACKET_IF_MODE_IP = 2
-} af_packet_if_mode_t;
-
-typedef enum
-{
-  AF_PACKET_IF_FLAGS_QDISC_BYPASS = 1,
-  AF_PACKET_IF_FLAGS_CKSUM_GSO = 2,
-  AF_PACKET_IF_FLAGS_FANOUT = 4,
-  AF_PACKET_IF_FLAGS_VERSION_2 = 8,
-} af_packet_if_flags_t;
-
-typedef struct
-{
-  u32 sw_if_index;
-  u8 host_if_name[64];
-} af_packet_if_detail_t;
-
-typedef struct
-{
-  u8 *ring_start_addr;
-  u32 ring_size;
-} af_packet_ring_t;
-
-typedef struct
-{
-  CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
-  clib_spinlock_t lockp;
-  int fd;
-  union
-  {
-    tpacket_req_u_t *rx_req;
-    tpacket_req_u_t *tx_req;
-  };
-
-  union
-  {
-    u8 **rx_ring;
-    u8 **tx_ring;
-  };
-
-  union
-  {
-    u32 next_rx_block;
-    u32 next_rx_frame;
-    u32 next_tx_frame;
-  };
-
-  u16 queue_id;
-  u32 queue_index;
-
-  u32 clib_file_index;
-
-  u32 rx_frame_offset;
-  u16 num_rx_pkts;
-  u8 is_rx_pending;
-  u8 is_tx_pending;
-  vnet_hw_if_rx_mode mode;
-} af_packet_queue_t;
-
-typedef struct
-{
-  CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
-  u32 hw_if_index;
-  u32 sw_if_index;
-  u32 per_interface_next_index;
-  af_packet_if_mode_t mode;
-  u8 is_admin_up;
-  u8 is_cksum_gso_enabled;
-  u8 version;
-  af_packet_queue_t *rx_queues;
-  af_packet_queue_t *tx_queues;
-
-  u8 num_rxqs;
-  u8 num_txqs;
-
-  u8 *host_if_name;
-  int host_if_index;
-
-  u32 host_mtu;
-  u32 dev_instance;
-
-  af_packet_ring_t *rings;
-  u8 is_qdisc_bypass_enabled;
-  u8 is_fanout_enabled;
-} af_packet_if_t;
-
-typedef struct
-{
-  CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
-  af_packet_if_t *interfaces;
-
-  u32 polling_count;
-  /* rx buffer cache */
-  u32 **rx_buffers;
-
-  /* hash of host interface names */
-  mhash_t if_index_by_host_if_name;
-
-  /** log class */
-  vlib_log_class_t log_class;
-} af_packet_main_t;
-
-typedef struct
-{
-  u8 *host_if_name;
-  u8 *hw_addr;
-  u32 rx_frame_size;
-  u32 tx_frame_size;
-  u32 rx_frames_per_block;
-  u32 tx_frames_per_block;
-  u8 num_rxqs;
-  u8 num_txqs;
-  u8 is_v2;
-  af_packet_if_mode_t mode;
-  af_packet_if_flags_t flags;
-
-  /* return */
-  u32 sw_if_index;
-} af_packet_create_if_arg_t;
-
-extern af_packet_main_t af_packet_main;
-extern vnet_device_class_t af_packet_device_class;
-extern vlib_node_registration_t af_packet_input_node;
-
-int af_packet_create_if (af_packet_create_if_arg_t *arg);
-int af_packet_delete_if (u8 *host_if_name);
-int af_packet_set_l4_cksum_offload (u32 sw_if_index, u8 set);
-int af_packet_dump_ifs (af_packet_if_detail_t ** out_af_packet_ifs);
-
-format_function_t format_af_packet_device_name;
-
-#define MIN(x,y) (((x)<(y))?(x):(y))
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
diff --git a/src/vnet/devices/af_packet/af_packet_api.c b/src/vnet/devices/af_packet/af_packet_api.c
deleted file mode 100644
index 6ca79f9705e..00000000000
--- a/src/vnet/devices/af_packet/af_packet_api.c
+++ /dev/null
@@ -1,253 +0,0 @@
-/*
- *------------------------------------------------------------------
- * af_packet_api.c - af-packet api
- *
- * Copyright (c) 2016 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 <vlibmemory/api.h>
-
-#include <vnet/interface.h>
-#include <vnet/api_errno.h>
-#include <vnet/devices/af_packet/af_packet.h>
-
-#include <vnet/format_fns.h>
-#include <vnet/devices/af_packet/af_packet.api_enum.h>
-#include <vnet/devices/af_packet/af_packet.api_types.h>
-
-#define REPLY_MSG_ID_BASE msg_id_base
-#include <vlibapi/api_helper_macros.h>
-
-static u16 msg_id_base;
-
-static void
-vl_api_af_packet_create_t_handler (vl_api_af_packet_create_t * mp)
-{
-  af_packet_create_if_arg_t _arg, *arg = &_arg;
-  vl_api_af_packet_create_reply_t *rmp;
-  int rv = 0;
-
-  clib_memset (arg, 0, sizeof (*arg));
-
-  arg->host_if_name = format (0, "%s", mp->host_if_name);
-  vec_add1 (arg->host_if_name, 0);
-
-  arg->hw_addr = mp->use_random_hw_addr ? 0 : mp->hw_addr;
-  arg->mode = AF_PACKET_IF_MODE_ETHERNET;
-  // Default flags
-  arg->flags = AF_PACKET_IF_FLAGS_QDISC_BYPASS | AF_PACKET_IF_FLAGS_CKSUM_GSO;
-  rv = af_packet_create_if (arg);
-
-  vec_free (arg->host_if_name);
-
-  REPLY_MACRO2 (VL_API_AF_PACKET_CREATE_REPLY, ({
-		  rmp->sw_if_index = clib_host_to_net_u32 (arg->sw_if_index);
-		}));
-}
-
-static void
-vl_api_af_packet_create_v2_t_handler (vl_api_af_packet_create_v2_t *mp)
-{
-  af_packet_create_if_arg_t _arg, *arg = &_arg;
-  vl_api_af_packet_create_v2_reply_t *rmp;
-  int rv = 0;
-
-  clib_memset (arg, 0, sizeof (*arg));
-
-  arg->host_if_name = format (0, "%s", mp->host_if_name);
-  vec_add1 (arg->host_if_name, 0);
-
-  // Default number of rx/tx queue(s)
-  arg->num_rxqs = 1;
-  arg->num_txqs = 1;
-  arg->rx_frame_size = clib_net_to_host_u32 (mp->rx_frame_size);
-  arg->tx_frame_size = clib_net_to_host_u32 (mp->tx_frame_size);
-  arg->rx_frames_per_block = clib_net_to_host_u32 (mp->rx_frames_per_block);
-  arg->tx_frames_per_block = clib_net_to_host_u32 (mp->tx_frames_per_block);
-  arg->hw_addr = mp->use_random_hw_addr ? 0 : mp->hw_addr;
-  arg->mode = AF_PACKET_IF_MODE_ETHERNET;
-  // Default flags
-  arg->flags = AF_PACKET_IF_FLAGS_QDISC_BYPASS | AF_PACKET_IF_FLAGS_CKSUM_GSO;
-
-  if (mp->num_rx_queues > 1)
-    arg->num_rxqs = clib_net_to_host_u16 (mp->num_rx_queues);
-
-  rv = af_packet_create_if (arg);
-
-  vec_free (arg->host_if_name);
-  REPLY_MACRO2 (VL_API_AF_PACKET_CREATE_V2_REPLY, ({
-		  rmp->sw_if_index = clib_host_to_net_u32 (arg->sw_if_index);
-		}));
-}
-
-static void
-vl_api_af_packet_create_v3_t_handler (vl_api_af_packet_create_v3_t *mp)
-{
-  af_packet_create_if_arg_t _arg, *arg = &_arg;
-  vl_api_af_packet_create_v3_reply_t *rmp;
-  int rv = 0;
-
-  clib_memset (arg, 0, sizeof (*arg));
-
-  arg->host_if_name = format (0, "%s", mp->host_if_name);
-  vec_add1 (arg->host_if_name, 0);
-
-  // Default number of rx/tx queue(s)
-  arg->num_rxqs = 1;
-  arg->num_txqs = 1;
-  arg->rx_frame_size = clib_net_to_host_u32 (mp->rx_frame_size);
-  arg->tx_frame_size = clib_net_to_host_u32 (mp->tx_frame_size);
-  arg->rx_frames_per_block = clib_net_to_host_u32 (mp->rx_frames_per_block);
-  arg->tx_frames_per_block = clib_net_to_host_u32 (mp->tx_frames_per_block);
-  arg->hw_addr = mp->use_random_hw_addr ? 0 : mp->hw_addr;
-
-  switch (clib_net_to_host_u32 (mp->mode))
-    {
-    case AF_PACKET_API_MODE_ETHERNET:
-      arg->mode = AF_PACKET_IF_MODE_ETHERNET;
-      break;
-    case AF_PACKET_API_MODE_IP:
-      arg->mode = AF_PACKET_IF_MODE_IP;
-      break;
-    default:
-      arg->sw_if_index = ~0;
-      rv = VNET_ERR_INVALID_VALUE;
-      goto error;
-    }
-
-  STATIC_ASSERT (((int) AF_PACKET_API_FLAG_QDISC_BYPASS ==
-		  (int) AF_PACKET_IF_FLAGS_QDISC_BYPASS),
-		 "af-packet qdisc-bypass api flag mismatch");
-  STATIC_ASSERT (
-    ((int) AF_PACKET_API_FLAG_CKSUM_GSO == (int) AF_PACKET_IF_FLAGS_CKSUM_GSO),
-    "af-packet checksum/gso offload api flag mismatch");
-
-  STATIC_ASSERT (
-    ((int) AF_PACKET_API_FLAG_VERSION_2 == (int) AF_PACKET_IF_FLAGS_VERSION_2),
-    "af-packet version 2 api flag mismatch");
-
-  // Default flags
-  arg->flags = clib_net_to_host_u32 (mp->flags);
-
-  if (clib_net_to_host_u16 (mp->num_rx_queues) > 1)
-    arg->num_rxqs = clib_net_to_host_u16 (mp->num_rx_queues);
-
-  if (clib_net_to_host_u16 (mp->num_tx_queues) > 1)
-    arg->num_txqs = clib_net_to_host_u16 (mp->num_tx_queues);
-
-  arg->is_v2 = (arg->flags & AF_PACKET_API_FLAG_VERSION_2) ? 1 : 0;
-  rv = af_packet_create_if (arg);
-
-error:
-  vec_free (arg->host_if_name);
-  REPLY_MACRO2 (VL_API_AF_PACKET_CREATE_V3_REPLY, ({
-		  rmp->sw_if_index = clib_host_to_net_u32 (arg->sw_if_index);
-		}));
-}
-
-static void
-vl_api_af_packet_delete_t_handler (vl_api_af_packet_delete_t * mp)
-{
-  vl_api_af_packet_delete_reply_t *rmp;
-  int rv = 0;
-  u8 *host_if_name = NULL;
-
-  host_if_name = format (0, "%s", mp->host_if_name);
-  vec_add1 (host_if_name, 0);
-
-  rv = af_packet_delete_if (host_if_name);
-
-  vec_free (host_if_name);
-
-  REPLY_MACRO (VL_API_AF_PACKET_DELETE_REPLY);
-}
-
-static void
-  vl_api_af_packet_set_l4_cksum_offload_t_handler
-  (vl_api_af_packet_set_l4_cksum_offload_t * mp)
-{
-  vl_api_af_packet_delete_reply_t *rmp;
-  int rv = 0;
-
-  rv = af_packet_set_l4_cksum_offload (ntohl (mp->sw_if_index), mp->set);
-  REPLY_MACRO (VL_API_AF_PACKET_SET_L4_CKSUM_OFFLOAD_REPLY);
-}
-
-static void
-af_packet_send_details (vpe_api_main_t * am,
-			vl_api_registration_t * reg,
-			af_packet_if_detail_t * af_packet_if, u32 context)
-{
-  vl_api_af_packet_details_t *mp;
-  mp = vl_msg_api_alloc (sizeof (*mp));
-  clib_memset (mp, 0, sizeof (*mp));
-  mp->_vl_msg_id = htons (REPLY_MSG_ID_BASE + VL_API_AF_PACKET_DETAILS);
-  mp->sw_if_index = htonl (af_packet_if->sw_if_index);
-  clib_memcpy (mp->host_if_name, af_packet_if->host_if_name,
-	       MIN (ARRAY_LEN (mp->host_if_name) - 1,
-		    strlen ((const char *) af_packet_if->host_if_name)));
-
-  mp->context = context;
-  vl_api_send_msg (reg, (u8 *) mp);
-}
-
-
-static void
-vl_api_af_packet_dump_t_handler (vl_api_af_packet_dump_t * mp)
-{
-  int rv;
-  vpe_api_main_t *am = &vpe_api_main;
-  vl_api_registration_t *reg;
-  af_packet_if_detail_t *out_af_packet_ifs = NULL;
-  af_packet_if_detail_t *af_packet_if = NULL;
-
-  reg = vl_api_client_index_to_registration (mp->client_index);
-  if (!reg)
-    return;
-
-  rv = af_packet_dump_ifs (&out_af_packet_ifs);
-  if (rv)
-    return;
-
-  vec_foreach (af_packet_if, out_af_packet_ifs)
-  {
-    af_packet_send_details (am, reg, af_packet_if, mp->context);
-  }
-
-  vec_free (out_af_packet_ifs);
-}
-
-#include <vnet/devices/af_packet/af_packet.api.c>
-static clib_error_t *
-af_packet_api_hookup (vlib_main_t * vm)
-{
-  /*
-   * Set up the (msg_name, crc, message-id) table
-   */
-  REPLY_MSG_ID_BASE = setup_message_id_table ();
-
-  return 0;
-}
-
-VLIB_API_INIT_FUNCTION (af_packet_api_hookup);
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
diff --git a/src/vnet/devices/af_packet/cli.c b/src/vnet/devices/af_packet/cli.c
deleted file mode 100644
index d20ef61a09d..00000000000
--- a/src/vnet/devices/af_packet/cli.c
+++ /dev/null
@@ -1,295 +0,0 @@
-/*
- *------------------------------------------------------------------
- * af_packet.c - linux kernel packet interface
- *
- * Copyright (c) 2016 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 <fcntl.h>		/* for open */
-#include <sys/ioctl.h>
-#include <sys/socket.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <sys/uio.h>		/* for iovec */
-#include <netinet/in.h>
-
-#include <vlib/vlib.h>
-#include <vlib/unix/unix.h>
-#include <vnet/ip/ip.h>
-#include <vnet/ethernet/ethernet.h>
-
-#include <vnet/devices/af_packet/af_packet.h>
-
-/**
- * @file
- * @brief CLI for Host Interface Device Driver.
- *
- * This file contains the source code for CLI for the host interface.
- */
-
-static clib_error_t *
-af_packet_create_command_fn (vlib_main_t * vm, unformat_input_t * input,
-			     vlib_cli_command_t * cmd)
-{
-  unformat_input_t _line_input, *line_input = &_line_input;
-  af_packet_create_if_arg_t _arg, *arg = &_arg;
-  clib_error_t *error = NULL;
-  u8 hwaddr[6];
-  int r;
-
-  clib_memset (arg, 0, sizeof (*arg));
-
-  // Default mode
-  arg->mode = AF_PACKET_IF_MODE_ETHERNET;
-
-  // Default number of rx/tx queue(s)
-  arg->num_rxqs = 1;
-  arg->num_txqs = 1;
-
-  // Default flags
-  arg->flags = AF_PACKET_IF_FLAGS_QDISC_BYPASS | AF_PACKET_IF_FLAGS_CKSUM_GSO;
-
-  /* Get a line of input. */
-  if (!unformat_user (input, unformat_line_input, line_input))
-    return 0;
-
-  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
-    {
-      if (unformat (line_input, "name %s", &arg->host_if_name))
-	;
-      else if (unformat (line_input, "rx-size %u", &arg->rx_frame_size))
-	;
-      else if (unformat (line_input, "tx-size %u", &arg->tx_frame_size))
-	;
-      else if (unformat (line_input, "rx-per-block %u",
-			 &arg->rx_frames_per_block))
-	;
-      else if (unformat (line_input, "tx-per-block %u",
-			 &arg->tx_frames_per_block))
-	;
-      else if (unformat (line_input, "num-rx-queues %u", &arg->num_rxqs))
-	;
-      else if (unformat (line_input, "num-tx-queues %u", &arg->num_txqs))
-	;
-      else if (unformat (line_input, "qdisc-bypass-disable"))
-	arg->flags &= ~AF_PACKET_IF_FLAGS_QDISC_BYPASS;
-      else if (unformat (line_input, "cksum-gso-disable"))
-	arg->flags &= ~AF_PACKET_IF_FLAGS_CKSUM_GSO;
-      else if (unformat (line_input, "mode ip"))
-	arg->mode = AF_PACKET_IF_MODE_IP;
-      else if (unformat (line_input, "v2"))
-	arg->is_v2 = 1;
-      else if (unformat (line_input, "hw-addr %U", unformat_ethernet_address,
-			 hwaddr))
-	arg->hw_addr = hwaddr;
-      else
-	{
-	  error = clib_error_return (0, "unknown input `%U'",
-				     format_unformat_error, line_input);
-	  goto done;
-	}
-    }
-
-  if (arg->host_if_name == NULL)
-    {
-      error = clib_error_return (0, "missing host interface name");
-      goto done;
-    }
-
-  r = af_packet_create_if (arg);
-
-  if (r == VNET_API_ERROR_SYSCALL_ERROR_1)
-    {
-      error = clib_error_return (0, "%s (errno %d)", strerror (errno), errno);
-      goto done;
-    }
-
-  if (r == VNET_API_ERROR_INVALID_INTERFACE)
-    {
-      error = clib_error_return (0, "Invalid interface name");
-      goto done;
-    }
-
-  if (r == VNET_API_ERROR_SUBIF_ALREADY_EXISTS)
-    {
-      error = clib_error_return (0, "Interface already exists");
-      goto done;
-    }
-
-  vlib_cli_output (vm, "%U\n", format_vnet_sw_if_index_name, vnet_get_main (),
-		   arg->sw_if_index);
-
-done:
-  vec_free (arg->host_if_name);
-  unformat_free (line_input);
-
-  return error;
-}
-
-/*?
- * Create a host interface that will attach to a linux AF_PACKET
- * interface, one side of a veth pair. The veth pair must already
- * exist. Once created, a new host interface will exist in VPP
- * with the name '<em>host-<ifname></em>', where '<em><ifname></em>'
- * is the name of the specified veth pair. Use the
- * '<em>show interface</em>' command to display host interface details.
- *
- * This command has the following optional parameters:
- *
- * - <b>hw-addr <mac-addr></b> - Optional ethernet address, can be in either
- * X:X:X:X:X:X unix or X.X.X cisco format.
- *
- * @cliexpar
- * Example of how to create a host interface tied to one side of an
- * existing linux veth pair named vpp1:
- * @cliexstart{create host-interface name vpp1}
- * host-vpp1
- * @cliexend
- * Once the host interface is created, enable the interface using:
- * @cliexcmd{set interface state host-vpp1 up}
-?*/
-VLIB_CLI_COMMAND (af_packet_create_command, static) = {
-  .path = "create host-interface",
-  .short_help = "create host-interface [v2] name <ifname> [num-rx-queues <n>] "
-		"[num-tx-queues <n>] [hw-addr <mac-addr>] [mode ip] "
-		"[qdisc-bypass-disable] [cksum-gso-disable]",
-  .function = af_packet_create_command_fn,
-};
-
-static clib_error_t *
-af_packet_delete_command_fn (vlib_main_t * vm, unformat_input_t * input,
-			     vlib_cli_command_t * cmd)
-{
-  unformat_input_t _line_input, *line_input = &_line_input;
-  u8 *host_if_name = NULL;
-  clib_error_t *error = NULL;
-
-  /* Get a line of input. */
-  if (!unformat_user (input, unformat_line_input, line_input))
-    return 0;
-
-  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
-    {
-      if (unformat (line_input, "name %s", &host_if_name))
-	;
-      else
-	{
-	  error = clib_error_return (0, "unknown input `%U'",
-				     format_unformat_error, line_input);
-	  goto done;
-	}
-    }
-
-  if (host_if_name == NULL)
-    {
-      error = clib_error_return (0, "missing host interface name");
-      goto done;
-    }
-
-  af_packet_delete_if (host_if_name);
-
-done:
-  vec_free (host_if_name);
-  unformat_free (line_input);
-
-  return error;
-}
-
-/*?
- * Delete a host interface. Use the linux interface name to identify
- * the host interface to be deleted. In VPP, host interfaces are
- * named as '<em>host-<ifname></em>', where '<em><ifname></em>'
- * is the name of the linux interface.
- *
- * @cliexpar
- * Example of how to delete a host interface named host-vpp1:
- * @cliexcmd{delete host-interface name vpp1}
-?*/
-VLIB_CLI_COMMAND (af_packet_delete_command, static) = {
-  .path = "delete host-interface",
-  .short_help = "delete host-interface name <ifname>",
-  .function = af_packet_delete_command_fn,
-};
-
-static clib_error_t *
-af_packet_set_l4_cksum_offload_command_fn (vlib_main_t * vm,
-					   unformat_input_t * input,
-					   vlib_cli_command_t * cmd)
-{
-  unformat_input_t _line_input, *line_input = &_line_input;
-  u8 set = 0;
-  clib_error_t *error = NULL;
-  vnet_main_t *vnm = vnet_get_main ();
-  u32 sw_if_index;
-
-  if (!unformat_user (input, unformat_line_input, line_input))
-    return 0;
-
-  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
-    {
-      if (unformat (line_input, "%U", unformat_vnet_sw_interface, vnm,
-		    &sw_if_index))
-	;
-      else if (unformat (line_input, "on"))
-	set = 1;
-      else if (unformat (line_input, "off"))
-	set = 0;
-      else
-	{
-	  error = clib_error_return (0, "unknown input '%U'",
-				     format_unformat_error, line_input);
-	  goto done;
-	}
-    }
-
-  if (af_packet_set_l4_cksum_offload (sw_if_index, set) < 0)
-    error = clib_error_return (0, "not an af_packet interface");
-
-done:
-  unformat_free (line_input);
-  return error;
-}
-
-/*?
- * Set TCP/UDP offload checksum calculation. Use interface
- * name to identify the interface to set TCP/UDP offload checksum
- * calculation.
- *
- * @cliexpar
- * Example of how to set TCP/UDP offload checksum calculation on host-vpp0:
- * @cliexcmd{set host-interface l4-cksum-offload host-vpp0 off}
- * @cliexcmd{set host-interface l4-cksum-offload host-vpp0 on}
-?*/
-VLIB_CLI_COMMAND (af_packet_set_l4_cksum_offload_command, static) = {
-  .path = "set host-interface l4-cksum-offload",
-  .short_help = "set host-interface l4-cksum-offload <host-if-name> <on|off>",
-  .function = af_packet_set_l4_cksum_offload_command_fn,
-};
-
-clib_error_t *
-af_packet_cli_init (vlib_main_t * vm)
-{
-  return 0;
-}
-
-VLIB_INIT_FUNCTION (af_packet_cli_init);
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
diff --git a/src/vnet/devices/af_packet/device.c b/src/vnet/devices/af_packet/device.c
deleted file mode 100644
index 17291f76b71..00000000000
--- a/src/vnet/devices/af_packet/device.c
+++ /dev/null
@@ -1,836 +0,0 @@
-/*
- *------------------------------------------------------------------
- * af_packet.c - linux kernel packet interface
- *
- * Copyright (c) 2016 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 <linux/if_packet.h>
-#include <sys/socket.h>
-#include <sys/ioctl.h>
-#include <net/if.h>
-#include <net/if_arp.h>
-
-#include <vlib/vlib.h>
-#include <vlib/unix/unix.h>
-#include <vnet/ip/ip.h>
-#include <vnet/ethernet/ethernet.h>
-#include <vnet/ip/ip4_packet.h>
-#include <vnet/ip/ip6_packet.h>
-#include <vnet/ip/ip_psh_cksum.h>
-#include <vnet/tcp/tcp_packet.h>
-#include <vnet/udp/udp_packet.h>
-
-#include <vnet/devices/af_packet/af_packet.h>
-#include <vnet/devices/virtio/virtio_std.h>
-
-#define foreach_af_packet_tx_func_error               \
-_(FRAME_NOT_READY, "tx frame not ready")              \
-_(TXRING_EAGAIN,   "tx sendto temporary failure")     \
-_(TXRING_FATAL,    "tx sendto fatal failure")         \
-_(TXRING_OVERRUN,  "tx ring overrun")
-
-typedef enum
-{
-#define _(f,s) AF_PACKET_TX_ERROR_##f,
-  foreach_af_packet_tx_func_error
-#undef _
-    AF_PACKET_TX_N_ERROR,
-} af_packet_tx_func_error_t;
-
-static char *af_packet_tx_func_error_strings[] = {
-#define _(n,s) s,
-  foreach_af_packet_tx_func_error
-#undef _
-};
-
-typedef struct
-{
-  u32 buffer_index;
-  u32 hw_if_index;
-  u16 queue_id;
-  u8 is_v2;
-  union
-  {
-    tpacket2_hdr_t tph2;
-    tpacket3_hdr_t tph3;
-  };
-  vnet_virtio_net_hdr_t vnet_hdr;
-  vlib_buffer_t buffer;
-} af_packet_tx_trace_t;
-
-#ifndef CLIB_MARCH_VARIANT
-u8 *
-format_af_packet_device_name (u8 * s, va_list * args)
-{
-  u32 i = va_arg (*args, u32);
-  af_packet_main_t *apm = &af_packet_main;
-  af_packet_if_t *apif = pool_elt_at_index (apm->interfaces, i);
-
-  s = format (s, "host-%s", apif->host_if_name);
-  return s;
-}
-#endif /* CLIB_MARCH_VARIANT */
-
-static u8 *
-format_af_packet_device (u8 * s, va_list * args)
-{
-  u32 dev_instance = va_arg (*args, u32);
-  u32 indent = format_get_indent (s);
-  int __clib_unused verbose = va_arg (*args, int);
-
-  af_packet_main_t *apm = &af_packet_main;
-  af_packet_if_t *apif = pool_elt_at_index (apm->interfaces, dev_instance);
-  af_packet_queue_t *rx_queue = 0;
-  af_packet_queue_t *tx_queue = 0;
-
-  s = format (s, "Linux PACKET socket interface %s",
-	      (apif->version == TPACKET_V2) ? "v2" : "v3");
-  s = format (s, "\n%UFEATURES:", format_white_space, indent);
-  if (apif->is_qdisc_bypass_enabled)
-    s = format (s, "\n%Uqdisc-bpass-enabled", format_white_space, indent + 2);
-  if (apif->is_cksum_gso_enabled)
-    s = format (s, "\n%Ucksum-gso-enabled", format_white_space, indent + 2);
-  if (apif->is_fanout_enabled)
-    s = format (s, "\n%Ufanout-enabled", format_white_space, indent + 2);
-
-  vec_foreach (rx_queue, apif->rx_queues)
-    {
-      u32 rx_block_size = rx_queue->rx_req->req.tp_block_size;
-      u32 rx_frame_size = rx_queue->rx_req->req.tp_frame_size;
-      u32 rx_frame_nr = rx_queue->rx_req->req.tp_frame_nr;
-      u32 rx_block_nr = rx_queue->rx_req->req.tp_block_nr;
-
-      s = format (s, "\n%URX Queue %u:", format_white_space, indent,
-		  rx_queue->queue_id);
-      s = format (s, "\n%Ublock size:%d nr:%d  frame size:%d nr:%d",
-		  format_white_space, indent + 2, rx_block_size, rx_block_nr,
-		  rx_frame_size, rx_frame_nr);
-      if (apif->version == TPACKET_V2)
-	s = format (s, " next frame:%d", rx_queue->next_rx_frame);
-      else
-	s = format (s, " next block:%d", rx_queue->next_rx_block);
-      if (rx_queue->is_rx_pending)
-	{
-	  s = format (
-	    s, "\n%UPending Request: num-rx-pkts:%d next-frame-offset:%d",
-	    format_white_space, indent + 2, rx_queue->num_rx_pkts,
-	    rx_queue->rx_frame_offset);
-	}
-    }
-
-  vec_foreach (tx_queue, apif->tx_queues)
-    {
-      clib_spinlock_lock (&tx_queue->lockp);
-      u32 tx_block_sz = tx_queue->tx_req->req.tp_block_size;
-      u32 tx_frame_sz = tx_queue->tx_req->req.tp_frame_size;
-      u32 tx_frame_nr = tx_queue->tx_req->req.tp_frame_nr;
-      u32 tx_block_nr = tx_queue->tx_req->req.tp_block_nr;
-      int block = 0;
-      int n_send_req = 0, n_avail = 0, n_sending = 0, n_tot = 0, n_wrong = 0;
-      u8 *tx_block_start = tx_queue->tx_ring[block];
-      u32 tx_frame = tx_queue->next_tx_frame;
-      tpacket3_hdr_t *tph3;
-      tpacket2_hdr_t *tph2;
-
-      s = format (s, "\n%UTX Queue %u:", format_white_space, indent,
-		  tx_queue->queue_id);
-      s = format (s, "\n%Ublock size:%d nr:%d  frame size:%d nr:%d",
-		  format_white_space, indent + 2, tx_block_sz, tx_block_nr,
-		  tx_frame_sz, tx_frame_nr);
-      s = format (s, " next frame:%d", tx_queue->next_tx_frame);
-      if (apif->version & TPACKET_V3)
-	do
-	  {
-	    tph3 =
-	      (tpacket3_hdr_t *) (tx_block_start + tx_frame * tx_frame_sz);
-	    tx_frame = (tx_frame + 1) % tx_frame_nr;
-	    if (tph3->tp_status == 0)
-	      n_avail++;
-	    else if (tph3->tp_status & TP_STATUS_SEND_REQUEST)
-	      n_send_req++;
-	    else if (tph3->tp_status & TP_STATUS_SENDING)
-	      n_sending++;
-	    else
-	      n_wrong++;
-	    n_tot++;
-	  }
-	while (tx_frame != tx_queue->next_tx_frame);
-      else
-	do
-	  {
-	    tph2 =
-	      (tpacket2_hdr_t *) (tx_block_start + tx_frame * tx_frame_sz);
-	    tx_frame = (tx_frame + 1) % tx_frame_nr;
-	    if (tph2->tp_status == 0)
-	      n_avail++;
-	    else if (tph2->tp_status & TP_STATUS_SEND_REQUEST)
-	      n_send_req++;
-	    else if (tph2->tp_status & TP_STATUS_SENDING)
-	      n_sending++;
-	    else
-	      n_wrong++;
-	    n_tot++;
-	  }
-	while (tx_frame != tx_queue->next_tx_frame);
-      s =
-	format (s, "\n%Uavailable:%d request:%d sending:%d wrong:%d total:%d",
-		format_white_space, indent + 2, n_avail, n_send_req, n_sending,
-		n_wrong, n_tot);
-      clib_spinlock_unlock (&tx_queue->lockp);
-    }
-  return s;
-}
-
-static u8 *
-format_af_packet_tx_trace (u8 *s, va_list *va)
-{
-  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*va, vlib_main_t *);
-  CLIB_UNUSED (vlib_node_t * node) = va_arg (*va, vlib_node_t *);
-  af_packet_tx_trace_t *t = va_arg (*va, af_packet_tx_trace_t *);
-  u32 indent = format_get_indent (s);
-
-  s = format (s, "af_packet: hw_if_index %u tx-queue %u", t->hw_if_index,
-	      t->queue_id);
-
-  if (t->is_v2)
-    {
-      s = format (
-	s,
-	"\n%Utpacket2_hdr:\n%Ustatus 0x%x len %u snaplen %u mac %u net %u"
-	"\n%Usec 0x%x nsec 0x%x vlan %U"
-#ifdef TP_STATUS_VLAN_TPID_VALID
-	" vlan_tpid %u"
-#endif
-	,
-	format_white_space, indent + 2, format_white_space, indent + 4,
-	t->tph2.tp_status, t->tph2.tp_len, t->tph2.tp_snaplen, t->tph2.tp_mac,
-	t->tph2.tp_net, format_white_space, indent + 4, t->tph2.tp_sec,
-	t->tph2.tp_nsec, format_ethernet_vlan_tci, t->tph2.tp_vlan_tci
-#ifdef TP_STATUS_VLAN_TPID_VALID
-	,
-	t->tph2.tp_vlan_tpid
-#endif
-      );
-    }
-  else
-    {
-      s = format (
-	s,
-	"\n%Utpacket3_hdr:\n%Ustatus 0x%x len %u snaplen %u mac %u net %u"
-	"\n%Usec 0x%x nsec 0x%x vlan %U"
-#ifdef TP_STATUS_VLAN_TPID_VALID
-	" vlan_tpid %u"
-#endif
-	,
-	format_white_space, indent + 2, format_white_space, indent + 4,
-	t->tph3.tp_status, t->tph3.tp_len, t->tph3.tp_snaplen, t->tph3.tp_mac,
-	t->tph3.tp_net, format_white_space, indent + 4, t->tph3.tp_sec,
-	t->tph3.tp_nsec, format_ethernet_vlan_tci, t->tph3.hv1.tp_vlan_tci
-#ifdef TP_STATUS_VLAN_TPID_VALID
-	,
-	t->tph3.hv1.tp_vlan_tpid
-#endif
-      );
-    }
-  s = format (s,
-	      "\n%Uvnet-hdr:\n%Uflags 0x%02x gso_type 0x%02x hdr_len %u"
-	      "\n%Ugso_size %u csum_start %u csum_offset %u",
-	      format_white_space, indent + 2, format_white_space, indent + 4,
-	      t->vnet_hdr.flags, t->vnet_hdr.gso_type, t->vnet_hdr.hdr_len,
-	      format_white_space, indent + 4, t->vnet_hdr.gso_size,
-	      t->vnet_hdr.csum_start, t->vnet_hdr.csum_offset);
-
-  s = format (s, "\n%Ubuffer 0x%x:\n%U%U", format_white_space, indent + 2,
-	      t->buffer_index, format_white_space, indent + 4,
-	      format_vnet_buffer_no_chain, &t->buffer);
-  s = format (s, "\n%U%U", format_white_space, indent + 2,
-	      format_ethernet_header_with_length, t->buffer.pre_data,
-	      sizeof (t->buffer.pre_data));
-  return s;
-}
-
-static void
-af_packet_tx_trace (vlib_main_t *vm, vlib_node_runtime_t *node,
-		    vlib_buffer_t *b0, u32 bi, void *tph,
-		    vnet_virtio_net_hdr_t *vnet_hdr, u32 hw_if_index,
-		    u16 queue_id, u8 is_v2)
-{
-  af_packet_tx_trace_t *t;
-  t = vlib_add_trace (vm, node, b0, sizeof (t[0]));
-  t->hw_if_index = hw_if_index;
-  t->queue_id = queue_id;
-  t->buffer_index = bi;
-  t->is_v2 = is_v2;
-
-  if (is_v2)
-    clib_memcpy_fast (&t->tph2, (tpacket2_hdr_t *) tph,
-		      sizeof (tpacket2_hdr_t));
-  else
-    clib_memcpy_fast (&t->tph3, (tpacket3_hdr_t *) tph,
-		      sizeof (tpacket3_hdr_t));
-  clib_memcpy_fast (&t->vnet_hdr, vnet_hdr, sizeof (*vnet_hdr));
-  clib_memcpy_fast (&t->buffer, b0, sizeof (*b0) - sizeof (b0->pre_data));
-  clib_memcpy_fast (t->buffer.pre_data, vlib_buffer_get_current (b0),
-		    sizeof (t->buffer.pre_data));
-}
-
-static_always_inline void
-fill_gso_offload (vlib_buffer_t *b0, vnet_virtio_net_hdr_t *vnet_hdr)
-{
-  vnet_buffer_oflags_t oflags = vnet_buffer (b0)->oflags;
-  i16 l4_hdr_offset = vnet_buffer (b0)->l4_hdr_offset - b0->current_data;
-  if (b0->flags & VNET_BUFFER_F_IS_IP4)
-    {
-      ip4_header_t *ip4;
-      vnet_hdr->gso_type = VIRTIO_NET_HDR_GSO_TCPV4;
-      vnet_hdr->gso_size = vnet_buffer2 (b0)->gso_size;
-      vnet_hdr->hdr_len = l4_hdr_offset + vnet_buffer2 (b0)->gso_l4_hdr_sz;
-      vnet_hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM;
-      vnet_hdr->csum_start = l4_hdr_offset; // 0x22;
-      vnet_hdr->csum_offset = STRUCT_OFFSET_OF (tcp_header_t, checksum);
-      ip4 = (ip4_header_t *) (b0->data + vnet_buffer (b0)->l3_hdr_offset);
-      if (oflags & VNET_BUFFER_OFFLOAD_F_IP_CKSUM)
-	ip4->checksum = ip4_header_checksum (ip4);
-      tcp_header_t *tcp =
-	(tcp_header_t *) (b0->data + vnet_buffer (b0)->l4_hdr_offset);
-      tcp->checksum = ip4_pseudo_header_cksum (ip4);
-    }
-  else if (b0->flags & VNET_BUFFER_F_IS_IP6)
-    {
-      ip6_header_t *ip6;
-      vnet_hdr->gso_type = VIRTIO_NET_HDR_GSO_TCPV6;
-      vnet_hdr->gso_size = vnet_buffer2 (b0)->gso_size;
-      vnet_hdr->hdr_len = l4_hdr_offset + vnet_buffer2 (b0)->gso_l4_hdr_sz;
-      vnet_hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM;
-      vnet_hdr->csum_start = l4_hdr_offset; // 0x36;
-      vnet_hdr->csum_offset = STRUCT_OFFSET_OF (tcp_header_t, checksum);
-      ip6 = (ip6_header_t *) (b0->data + vnet_buffer (b0)->l3_hdr_offset);
-      tcp_header_t *tcp =
-	(tcp_header_t *) (b0->data + vnet_buffer (b0)->l4_hdr_offset);
-      tcp->checksum = ip6_pseudo_header_cksum (ip6);
-    }
-}
-
-static_always_inline void
-fill_cksum_offload (vlib_buffer_t *b0, vnet_virtio_net_hdr_t *vnet_hdr)
-{
-  vnet_buffer_oflags_t oflags = vnet_buffer (b0)->oflags;
-  i16 l4_hdr_offset = vnet_buffer (b0)->l4_hdr_offset - b0->current_data;
-  if (b0->flags & VNET_BUFFER_F_IS_IP4)
-    {
-      ip4_header_t *ip4;
-      ip4 = (ip4_header_t *) (b0->data + vnet_buffer (b0)->l3_hdr_offset);
-      if (oflags & VNET_BUFFER_OFFLOAD_F_IP_CKSUM)
-	ip4->checksum = ip4_header_checksum (ip4);
-      vnet_hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM;
-      vnet_hdr->csum_start = l4_hdr_offset;
-      if (oflags & VNET_BUFFER_OFFLOAD_F_TCP_CKSUM)
-	{
-	  tcp_header_t *tcp =
-	    (tcp_header_t *) (b0->data + vnet_buffer (b0)->l4_hdr_offset);
-	  tcp->checksum = ip4_pseudo_header_cksum (ip4);
-	  vnet_hdr->csum_offset = STRUCT_OFFSET_OF (tcp_header_t, checksum);
-	}
-      else if (oflags & VNET_BUFFER_OFFLOAD_F_UDP_CKSUM)
-	{
-	  udp_header_t *udp =
-	    (udp_header_t *) (b0->data + vnet_buffer (b0)->l4_hdr_offset);
-	  udp->checksum = ip4_pseudo_header_cksum (ip4);
-	  vnet_hdr->csum_offset = STRUCT_OFFSET_OF (udp_header_t, checksum);
-	}
-    }
-  else if (b0->flags & VNET_BUFFER_F_IS_IP6)
-    {
-      ip6_header_t *ip6;
-      vnet_hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM;
-      vnet_hdr->csum_start = l4_hdr_offset;
-      ip6 = (ip6_header_t *) (b0->data + vnet_buffer (b0)->l3_hdr_offset);
-      if (oflags & VNET_BUFFER_OFFLOAD_F_TCP_CKSUM)
-	{
-	  tcp_header_t *tcp =
-	    (tcp_header_t *) (b0->data + vnet_buffer (b0)->l4_hdr_offset);
-	  tcp->checksum = ip6_pseudo_header_cksum (ip6);
-	  vnet_hdr->csum_offset = STRUCT_OFFSET_OF (tcp_header_t, checksum);
-	}
-      else if (oflags & VNET_BUFFER_OFFLOAD_F_UDP_CKSUM)
-	{
-	  udp_header_t *udp =
-	    (udp_header_t *) (b0->data + vnet_buffer (b0)->l4_hdr_offset);
-	  udp->checksum = ip6_pseudo_header_cksum (ip6);
-	  vnet_hdr->csum_offset = STRUCT_OFFSET_OF (udp_header_t, checksum);
-	}
-    }
-}
-
-VNET_DEVICE_CLASS_TX_FN (af_packet_device_class) (vlib_main_t * vm,
-						  vlib_node_runtime_t * node,
-						  vlib_frame_t * frame)
-{
-  af_packet_main_t *apm = &af_packet_main;
-  vnet_hw_if_tx_frame_t *tf = vlib_frame_scalar_args (frame);
-  u32 *buffers = vlib_frame_vector_args (frame);
-  u32 n_left = frame->n_vectors;
-  u32 n_sent = 0;
-  vnet_interface_output_runtime_t *rd = (void *) node->runtime_data;
-  af_packet_if_t *apif =
-    pool_elt_at_index (apm->interfaces, rd->dev_instance);
-  u16 queue_id = tf->queue_id;
-  af_packet_queue_t *tx_queue = vec_elt_at_index (apif->tx_queues, queue_id);
-  u32 block = 0, frame_size = 0, frame_num = 0, tx_frame = 0;
-  u8 *block_start = 0;
-  tpacket3_hdr_t *tph3 = 0;
-  tpacket2_hdr_t *tph2 = 0;
-  u32 frame_not_ready = 0;
-  u8 is_cksum_gso_enabled = (apif->is_cksum_gso_enabled == 1) ? 1 : 0;
-  u32 tpacket_align = 0;
-  u8 is_v2 = (apif->version == TPACKET_V2) ? 1 : 0;
-
-  if (tf->shared_queue)
-    clib_spinlock_lock (&tx_queue->lockp);
-
-  frame_size = tx_queue->tx_req->req.tp_frame_size;
-  frame_num = tx_queue->tx_req->req.tp_frame_nr;
-  block_start = tx_queue->tx_ring[block];
-  tx_frame = tx_queue->next_tx_frame;
-  if (is_v2)
-    {
-      tpacket_align = TPACKET_ALIGN (sizeof (tpacket2_hdr_t));
-      while (n_left)
-	{
-	  u32 len;
-	  vnet_virtio_net_hdr_t *vnet_hdr = 0;
-	  u32 offset = 0;
-	  vlib_buffer_t *b0 = 0, *b0_first = 0;
-	  u32 bi, bi_first;
-
-	  bi = bi_first = buffers[0];
-	  n_left--;
-	  buffers++;
-
-	  tph2 = (tpacket2_hdr_t *) (block_start + tx_frame * frame_size);
-	  if (PREDICT_FALSE (tph2->tp_status &
-			     (TP_STATUS_SEND_REQUEST | TP_STATUS_SENDING)))
-	    {
-	      frame_not_ready++;
-	      goto nextv2;
-	    }
-
-	  b0_first = b0 = vlib_get_buffer (vm, bi);
-
-	  if (PREDICT_TRUE (is_cksum_gso_enabled))
-	    {
-	      vnet_hdr =
-		(vnet_virtio_net_hdr_t *) ((u8 *) tph2 + tpacket_align);
-
-	      clib_memset_u8 (vnet_hdr, 0, sizeof (vnet_virtio_net_hdr_t));
-	      offset = sizeof (vnet_virtio_net_hdr_t);
-
-	      if (b0->flags & VNET_BUFFER_F_GSO)
-		fill_gso_offload (b0, vnet_hdr);
-	      else if (b0->flags & VNET_BUFFER_F_OFFLOAD)
-		fill_cksum_offload (b0, vnet_hdr);
-	    }
-
-	  len = b0->current_length;
-	  clib_memcpy_fast ((u8 *) tph2 + tpacket_align + offset,
-			    vlib_buffer_get_current (b0), len);
-	  offset += len;
-
-	  while (b0->flags & VLIB_BUFFER_NEXT_PRESENT)
-	    {
-	      b0 = vlib_get_buffer (vm, b0->next_buffer);
-	      len = b0->current_length;
-	      clib_memcpy_fast ((u8 *) tph2 + tpacket_align + offset,
-				vlib_buffer_get_current (b0), len);
-	      offset += len;
-	    }
-
-	  tph2->tp_len = tph2->tp_snaplen = offset;
-	  tph2->tp_status = TP_STATUS_SEND_REQUEST;
-	  n_sent++;
-
-	  if (PREDICT_FALSE (b0_first->flags & VLIB_BUFFER_IS_TRACED))
-	    {
-	      if (PREDICT_TRUE (is_cksum_gso_enabled))
-		af_packet_tx_trace (vm, node, b0_first, bi_first, tph2,
-				    vnet_hdr, apif->hw_if_index, queue_id, 1);
-	      else
-		{
-		  vnet_virtio_net_hdr_t vnet_hdr2 = {};
-		  af_packet_tx_trace (vm, node, b0_first, bi_first, tph2,
-				      &vnet_hdr2, apif->hw_if_index, queue_id,
-				      1);
-		}
-	    }
-	  tx_frame = (tx_frame + 1) % frame_num;
-
-	nextv2:
-	  /* check if we've exhausted the ring */
-	  if (PREDICT_FALSE (frame_not_ready + n_sent == frame_num))
-	    break;
-	}
-    }
-  else
-    {
-      tpacket_align = TPACKET_ALIGN (sizeof (tpacket3_hdr_t));
-
-      while (n_left)
-	{
-	  u32 len;
-	  vnet_virtio_net_hdr_t *vnet_hdr = 0;
-	  u32 offset = 0;
-	  vlib_buffer_t *b0 = 0, *b0_first = 0;
-	  u32 bi, bi_first;
-
-	  bi = bi_first = buffers[0];
-	  n_left--;
-	  buffers++;
-
-	  tph3 = (tpacket3_hdr_t *) (block_start + tx_frame * frame_size);
-	  if (PREDICT_FALSE (tph3->tp_status &
-			     (TP_STATUS_SEND_REQUEST | TP_STATUS_SENDING)))
-	    {
-	      frame_not_ready++;
-	      goto nextv3;
-	    }
-
-	  b0_first = b0 = vlib_get_buffer (vm, bi);
-
-	  if (PREDICT_TRUE (is_cksum_gso_enabled))
-	    {
-	      vnet_hdr =
-		(vnet_virtio_net_hdr_t *) ((u8 *) tph3 + tpacket_align);
-
-	      clib_memset_u8 (vnet_hdr, 0, sizeof (vnet_virtio_net_hdr_t));
-	      offset = sizeof (vnet_virtio_net_hdr_t);
-
-	      if (b0->flags & VNET_BUFFER_F_GSO)
-		fill_gso_offload (b0, vnet_hdr);
-	      else if (b0->flags & VNET_BUFFER_F_OFFLOAD)
-		fill_cksum_offload (b0, vnet_hdr);
-	    }
-
-	  len = b0->current_length;
-	  clib_memcpy_fast ((u8 *) tph3 + tpacket_align + offset,
-			    vlib_buffer_get_current (b0), len);
-	  offset += len;
-
-	  while (b0->flags & VLIB_BUFFER_NEXT_PRESENT)
-	    {
-	      b0 = vlib_get_buffer (vm, b0->next_buffer);
-	      len = b0->current_length;
-	      clib_memcpy_fast ((u8 *) tph3 + tpacket_align + offset,
-				vlib_buffer_get_current (b0), len);
-	      offset += len;
-	    }
-
-	  tph3->tp_len = tph3->tp_snaplen = offset;
-	  tph3->tp_status = TP_STATUS_SEND_REQUEST;
-	  n_sent++;
-
-	  if (PREDICT_FALSE (b0_first->flags & VLIB_BUFFER_IS_TRACED))
-	    {
-	      if (PREDICT_TRUE (is_cksum_gso_enabled))
-		af_packet_tx_trace (vm, node, b0_first, bi_first, tph3,
-				    vnet_hdr, apif->hw_if_index, queue_id, 0);
-	      else
-		{
-		  vnet_virtio_net_hdr_t vnet_hdr2 = {};
-		  af_packet_tx_trace (vm, node, b0_first, bi_first, tph3,
-				      &vnet_hdr2, apif->hw_if_index, queue_id,
-				      0);
-		}
-	    }
-	  tx_frame = (tx_frame + 1) % frame_num;
-
-	nextv3:
-	  /* check if we've exhausted the ring */
-	  if (PREDICT_FALSE (frame_not_ready + n_sent == frame_num))
-	    break;
-	}
-    }
-  CLIB_MEMORY_BARRIER ();
-
-  if (PREDICT_TRUE (n_sent || tx_queue->is_tx_pending))
-    {
-      tx_queue->next_tx_frame = tx_frame;
-      tx_queue->is_tx_pending = 0;
-
-      if (PREDICT_FALSE (
-	    sendto (tx_queue->fd, NULL, 0, MSG_DONTWAIT, NULL, 0) == -1))
-	{
-	  /* Uh-oh, drop & move on, but count whether it was fatal or not.
-	   * Note that we have no reliable way to properly determine the
-	   * disposition of the packets we just enqueued for delivery.
-	   */
-	  uword counter;
-
-	  if (unix_error_is_fatal (errno))
-	    {
-	      counter = AF_PACKET_TX_ERROR_TXRING_FATAL;
-	    }
-	  else
-	    {
-	      counter = AF_PACKET_TX_ERROR_TXRING_EAGAIN;
-	      /* non-fatal error: kick again next time
-	       * note that you could still end up in a deadlock: if you do not
-	       * try to send new packets (ie reschedule this tx node), eg.
-	       * because your peer is waiting for the unsent packets to reply
-	       * to you but your waiting for its reply etc., you are not going
-	       * to kick again, and everybody is waiting for the other to talk
-	       * 1st... */
-	      tx_queue->is_tx_pending = 1;
-	    }
-
-	  vlib_error_count (vm, node->node_index, counter, 1);
-	}
-    }
-
-  if (tf->shared_queue)
-    clib_spinlock_unlock (&tx_queue->lockp);
-
-  if (PREDICT_FALSE (frame_not_ready))
-    vlib_error_count (vm, node->node_index,
-		      AF_PACKET_TX_ERROR_FRAME_NOT_READY, frame_not_ready);
-
-  if (PREDICT_FALSE (frame_not_ready + n_sent == frame_num))
-    vlib_error_count (vm, node->node_index, AF_PACKET_TX_ERROR_TXRING_OVERRUN,
-		      n_left);
-
-  vlib_buffer_free (vm, vlib_frame_vector_args (frame), frame->n_vectors);
-  return frame->n_vectors;
-}
-
-static void
-af_packet_set_interface_next_node (vnet_main_t * vnm, u32 hw_if_index,
-				   u32 node_index)
-{
-  af_packet_main_t *apm = &af_packet_main;
-  vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);
-  af_packet_if_t *apif =
-    pool_elt_at_index (apm->interfaces, hw->dev_instance);
-
-  /* Shut off redirection */
-  if (node_index == ~0)
-    {
-      apif->per_interface_next_index = node_index;
-      return;
-    }
-
-  apif->per_interface_next_index =
-    vlib_node_add_next (vlib_get_main (), af_packet_input_node.index,
-			node_index);
-}
-
-static void
-af_packet_clear_hw_interface_counters (u32 instance)
-{
-  /* Nothing for now */
-}
-
-static clib_error_t *
-af_packet_interface_admin_up_down (vnet_main_t * vnm, u32 hw_if_index,
-				   u32 flags)
-{
-  af_packet_main_t *apm = &af_packet_main;
-  vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);
-  af_packet_if_t *apif =
-    pool_elt_at_index (apm->interfaces, hw->dev_instance);
-  u32 hw_flags;
-  int rv, fd = socket (AF_UNIX, SOCK_DGRAM, 0);
-  struct ifreq ifr;
-
-  if (0 > fd)
-    {
-      vlib_log_warn (apm->log_class, "af_packet_%s could not open socket",
-		     apif->host_if_name);
-      return 0;
-    }
-
-  /* if interface is a bridge ignore */
-  if (apif->host_if_index < 0)
-    goto error;			/* no error */
-
-  /* use host_if_index in case host name has changed */
-  ifr.ifr_ifindex = apif->host_if_index;
-  if ((rv = ioctl (fd, SIOCGIFNAME, &ifr)) < 0)
-    {
-      vlib_log_warn (apm->log_class,
-		     "af_packet_%s ioctl could not retrieve eth name",
-		     apif->host_if_name);
-      goto error;
-    }
-
-  apif->is_admin_up = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) != 0;
-
-  if ((rv = ioctl (fd, SIOCGIFFLAGS, &ifr)) < 0)
-    {
-      vlib_log_warn (apm->log_class, "af_packet_%s error: %d",
-		     apif->is_admin_up ? "up" : "down", rv);
-      goto error;
-    }
-
-  if (apif->is_admin_up)
-    {
-      hw_flags = VNET_HW_INTERFACE_FLAG_LINK_UP;
-      ifr.ifr_flags |= IFF_UP;
-    }
-  else
-    {
-      hw_flags = 0;
-      ifr.ifr_flags &= ~IFF_UP;
-    }
-
-  if ((rv = ioctl (fd, SIOCSIFFLAGS, &ifr)) < 0)
-    {
-      vlib_log_warn (apm->log_class, "af_packet_%s error: %d",
-		     apif->is_admin_up ? "up" : "down", rv);
-      goto error;
-    }
-
-  vnet_hw_interface_set_flags (vnm, hw_if_index, hw_flags);
-
-error:
-  if (0 <= fd)
-    close (fd);
-
-  return 0;			/* no error */
-}
-
-static clib_error_t *
-af_packet_subif_add_del_function (vnet_main_t * vnm,
-				  u32 hw_if_index,
-				  struct vnet_sw_interface_t *st, int is_add)
-{
-  /* Nothing for now */
-  return 0;
-}
-
-static clib_error_t *af_packet_set_mac_address_function
-  (struct vnet_hw_interface_t *hi, const u8 * old_address, const u8 * address)
-{
-  af_packet_main_t *apm = &af_packet_main;
-  af_packet_if_t *apif =
-    pool_elt_at_index (apm->interfaces, hi->dev_instance);
-  int rv, fd;
-  struct ifreq ifr;
-
-  if (apif->mode == AF_PACKET_IF_MODE_IP)
-    {
-      vlib_log_warn (apm->log_class, "af_packet_%s interface is in IP mode",
-		     apif->host_if_name);
-      return clib_error_return (0,
-				" MAC update failed, interface is in IP mode");
-    }
-
-  fd = socket (AF_UNIX, SOCK_DGRAM, 0);
-  if (0 > fd)
-    {
-      vlib_log_warn (apm->log_class, "af_packet_%s could not open socket",
-		     apif->host_if_name);
-      return 0;
-    }
-
-  /* if interface is a bridge ignore */
-  if (apif->host_if_index < 0)
-    goto error;			/* no error */
-
-  /* use host_if_index in case host name has changed */
-  ifr.ifr_ifindex = apif->host_if_index;
-  if ((rv = ioctl (fd, SIOCGIFNAME, &ifr)) < 0)
-    {
-      vlib_log_warn
-	(apm->log_class,
-	 "af_packet_%s ioctl could not retrieve eth name, error: %d",
-	 apif->host_if_name, rv);
-      goto error;
-    }
-
-  clib_memcpy (ifr.ifr_hwaddr.sa_data, address, 6);
-  ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER;
-
-  if ((rv = ioctl (fd, SIOCSIFHWADDR, &ifr)) < 0)
-    {
-      vlib_log_warn (apm->log_class,
-		     "af_packet_%s ioctl could not set mac, error: %d",
-		     apif->host_if_name, rv);
-      goto error;
-    }
-
-error:
-
-  if (0 <= fd)
-    close (fd);
-
-  return 0;			/* no error */
-}
-
-static clib_error_t *
-af_packet_interface_rx_mode_change (vnet_main_t *vnm, u32 hw_if_index, u32 qid,
-				    vnet_hw_if_rx_mode mode)
-{
-  af_packet_main_t *apm = &af_packet_main;
-  vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);
-  af_packet_if_t *apif;
-
-  apif = vec_elt_at_index (apm->interfaces, hw->dev_instance);
-
-  if (mode == VNET_HW_IF_RX_MODE_ADAPTIVE)
-    {
-      vlib_log_err (apm->log_class,
-		    "af_packet_%s adaptive mode is not supported",
-		    apif->host_if_name);
-      return clib_error_return (
-	0, "af_packet_%s adaptive mode is not supported", apif->host_if_name);
-    }
-
-  af_packet_queue_t *rx_queue = vec_elt_at_index (apif->rx_queues, qid);
-
-  if (rx_queue->mode != mode)
-    {
-      rx_queue->mode = mode;
-
-      if (mode == VNET_HW_IF_RX_MODE_POLLING)
-	apm->polling_count++;
-      else if (mode == VNET_HW_IF_RX_MODE_INTERRUPT && apm->polling_count > 0)
-	apm->polling_count--;
-    }
-
-  return 0;
-}
-
-VNET_DEVICE_CLASS (af_packet_device_class) = {
-  .name = "af-packet",
-  .format_device_name = format_af_packet_device_name,
-  .format_device = format_af_packet_device,
-  .format_tx_trace = format_af_packet_tx_trace,
-  .tx_function_n_errors = AF_PACKET_TX_N_ERROR,
-  .tx_function_error_strings = af_packet_tx_func_error_strings,
-  .rx_redirect_to_node = af_packet_set_interface_next_node,
-  .clear_counters = af_packet_clear_hw_interface_counters,
-  .admin_up_down_function = af_packet_interface_admin_up_down,
-  .subif_add_del_function = af_packet_subif_add_del_function,
-  .mac_addr_change_function = af_packet_set_mac_address_function,
-  .rx_mode_change_function = af_packet_interface_rx_mode_change,
-};
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
diff --git a/src/vnet/devices/af_packet/dir.dox b/src/vnet/devices/af_packet/dir.dox
deleted file mode 100644
index 78991c6d97f..00000000000
--- a/src/vnet/devices/af_packet/dir.dox
+++ /dev/null
@@ -1,29 +0,0 @@
-/*
- * Copyright (c) 2016 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.
- */
-
-/* Doxygen directory documentation */
-
-/**
-@dir
-@brief Host Interface Implementation.
-
-This directory contains the source code for Host Interface driver. The
-Host Interface driver leverages the DPDK AF_PACKET driver.
-
-
-*/
-/*? %%clicmd:group_label Host Interface %% ?*/
-/*? %%syscfg:group_label Host Interface %% ?*/
diff --git a/src/vnet/devices/af_packet/node.c b/src/vnet/devices/af_packet/node.c
deleted file mode 100644
index 724924f5f4b..00000000000
--- a/src/vnet/devices/af_packet/node.c
+++ /dev/null
@@ -1,845 +0,0 @@
-/*
- *------------------------------------------------------------------
- * af_packet.c - linux kernel packet interface
- *
- * Copyright (c) 2016 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 <linux/if_packet.h>
-
-#include <vlib/vlib.h>
-#include <vlib/unix/unix.h>
-#include <vnet/ip/ip.h>
-#include <vnet/ethernet/ethernet.h>
-#include <vnet/interface/rx_queue_funcs.h>
-#include <vnet/feature/feature.h>
-#include <vnet/ethernet/packet.h>
-
-#include <vnet/devices/af_packet/af_packet.h>
-#include <vnet/devices/virtio/virtio_std.h>
-
-#define foreach_af_packet_input_error                                         \
-  _ (PARTIAL_PKT, "partial packet")                                           \
-  _ (TIMEDOUT_BLK, "timed out block")                                         \
-  _ (TOTAL_RECV_BLK, "total received block")
-typedef enum
-{
-#define _(f,s) AF_PACKET_INPUT_ERROR_##f,
-  foreach_af_packet_input_error
-#undef _
-    AF_PACKET_INPUT_N_ERROR,
-} af_packet_input_error_t;
-
-static char *af_packet_input_error_strings[] = {
-#define _(n,s) s,
-  foreach_af_packet_input_error
-#undef _
-};
-
-typedef struct
-{
-  u32 next_index;
-  u32 hw_if_index;
-  u16 queue_id;
-  int block;
-  u32 pkt_num;
-  void *block_start;
-  block_desc_t bd;
-  union
-  {
-    tpacket3_hdr_t tph3;
-    tpacket2_hdr_t tph2;
-  };
-  vnet_virtio_net_hdr_t vnet_hdr;
-  u8 is_v3;
-} af_packet_input_trace_t;
-
-static u8 *
-format_af_packet_input_trace (u8 * s, va_list * args)
-{
-  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
-  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
-  af_packet_input_trace_t *t = va_arg (*args, af_packet_input_trace_t *);
-  u32 indent = format_get_indent (s);
-
-  s = format (s, "af_packet: hw_if_index %d rx-queue %u next-index %d",
-	      t->hw_if_index, t->queue_id, t->next_index);
-
-  if (t->is_v3)
-    {
-      s = format (
-	s, "\n%Ublock %u:\n%Uaddress %p version %u seq_num %lu pkt_num %u",
-	format_white_space, indent + 2, t->block, format_white_space,
-	indent + 4, t->block_start, t->bd.version, t->bd.hdr.bh1.seq_num,
-	t->pkt_num);
-      s = format (
-	s,
-	"\n%Utpacket3_hdr:\n%Ustatus 0x%x len %u snaplen %u mac %u net %u"
-	"\n%Usec 0x%x nsec 0x%x vlan %U"
-#ifdef TP_STATUS_VLAN_TPID_VALID
-	" vlan_tpid %u"
-#endif
-	,
-	format_white_space, indent + 2, format_white_space, indent + 4,
-	t->tph3.tp_status, t->tph3.tp_len, t->tph3.tp_snaplen, t->tph3.tp_mac,
-	t->tph3.tp_net, format_white_space, indent + 4, t->tph3.tp_sec,
-	t->tph3.tp_nsec, format_ethernet_vlan_tci, t->tph3.hv1.tp_vlan_tci
-#ifdef TP_STATUS_VLAN_TPID_VALID
-	,
-	t->tph3.hv1.tp_vlan_tpid
-#endif
-      );
-    }
-  else
-    {
-      s = format (
-	s,
-	"\n%Utpacket2_hdr:\n%Ustatus 0x%x len %u snaplen %u mac %u net %u"
-	"\n%Usec 0x%x nsec 0x%x vlan %U"
-#ifdef TP_STATUS_VLAN_TPID_VALID
-	" vlan_tpid %u"
-#endif
-	,
-	format_white_space, indent + 2, format_white_space, indent + 4,
-	t->tph2.tp_status, t->tph2.tp_len, t->tph2.tp_snaplen, t->tph2.tp_mac,
-	t->tph2.tp_net, format_white_space, indent + 4, t->tph2.tp_sec,
-	t->tph2.tp_nsec, format_ethernet_vlan_tci, t->tph2.tp_vlan_tci
-#ifdef TP_STATUS_VLAN_TPID_VALID
-	,
-	t->tph2.tp_vlan_tpid
-#endif
-      );
-    }
-
-  s = format (s,
-	      "\n%Uvnet-hdr:\n%Uflags 0x%02x gso_type 0x%02x hdr_len %u"
-	      "\n%Ugso_size %u csum_start %u csum_offset %u",
-	      format_white_space, indent + 2, format_white_space, indent + 4,
-	      t->vnet_hdr.flags, t->vnet_hdr.gso_type, t->vnet_hdr.hdr_len,
-	      format_white_space, indent + 4, t->vnet_hdr.gso_size,
-	      t->vnet_hdr.csum_start, t->vnet_hdr.csum_offset);
-  return s;
-}
-
-always_inline void
-buffer_add_to_chain (vlib_buffer_t *b, vlib_buffer_t *first_b,
-		     vlib_buffer_t *prev_b, u32 bi)
-{
-  /* update first buffer */
-  first_b->total_length_not_including_first_buffer += b->current_length;
-
-  /* update previous buffer */
-  prev_b->next_buffer = bi;
-  prev_b->flags |= VLIB_BUFFER_NEXT_PRESENT;
-
-  /* update current buffer */
-  b->next_buffer = ~0;
-}
-
-static_always_inline void
-fill_gso_offload (vlib_buffer_t *b, u32 gso_size, u8 l4_hdr_sz)
-{
-  b->flags |= VNET_BUFFER_F_GSO;
-  vnet_buffer2 (b)->gso_size = gso_size;
-  vnet_buffer2 (b)->gso_l4_hdr_sz = l4_hdr_sz;
-}
-
-static_always_inline void
-fill_cksum_offload (vlib_buffer_t *b, u8 *l4_hdr_sz, u8 is_ip)
-{
-  vnet_buffer_oflags_t oflags = 0;
-  u16 l2hdr_sz = 0;
-  u16 ethertype = 0;
-  u8 l4_proto = 0;
-
-  if (is_ip)
-    {
-      switch (b->data[0] & 0xf0)
-	{
-	case 0x40:
-	  ethertype = ETHERNET_TYPE_IP4;
-	  break;
-	case 0x60:
-	  ethertype = ETHERNET_TYPE_IP6;
-	  break;
-	}
-    }
-  else
-    {
-      ethernet_header_t *eth = (ethernet_header_t *) b->data;
-      ethertype = clib_net_to_host_u16 (eth->type);
-      l2hdr_sz = sizeof (ethernet_header_t);
-      if (ethernet_frame_is_tagged (ethertype))
-	{
-	  ethernet_vlan_header_t *vlan = (ethernet_vlan_header_t *) (eth + 1);
-
-	  ethertype = clib_net_to_host_u16 (vlan->type);
-	  l2hdr_sz += sizeof (*vlan);
-	  if (ethertype == ETHERNET_TYPE_VLAN)
-	    {
-	      vlan++;
-	      ethertype = clib_net_to_host_u16 (vlan->type);
-	      l2hdr_sz += sizeof (*vlan);
-	    }
-	}
-    }
-
-  vnet_buffer (b)->l2_hdr_offset = 0;
-  vnet_buffer (b)->l3_hdr_offset = l2hdr_sz;
-
-  if (ethertype == ETHERNET_TYPE_IP4)
-    {
-      ip4_header_t *ip4 = (ip4_header_t *) (b->data + l2hdr_sz);
-      vnet_buffer (b)->l4_hdr_offset = l2hdr_sz + ip4_header_bytes (ip4);
-      b->flags |= (VNET_BUFFER_F_IS_IP4 | VNET_BUFFER_F_L2_HDR_OFFSET_VALID |
-		   VNET_BUFFER_F_L3_HDR_OFFSET_VALID |
-		   VNET_BUFFER_F_L4_HDR_OFFSET_VALID);
-
-      l4_proto = ip4->protocol;
-    }
-  else if (ethertype == ETHERNET_TYPE_IP6)
-    {
-      ip6_header_t *ip6 = (ip6_header_t *) (b->data + l2hdr_sz);
-      b->flags |= (VNET_BUFFER_F_IS_IP6 | VNET_BUFFER_F_L2_HDR_OFFSET_VALID |
-		   VNET_BUFFER_F_L3_HDR_OFFSET_VALID |
-		   VNET_BUFFER_F_L4_HDR_OFFSET_VALID);
-      u16 ip6_hdr_len = sizeof (ip6_header_t);
-
-      if (ip6_ext_hdr (ip6->protocol))
-	{
-	  ip6_ext_header_t *p = (void *) (ip6 + 1);
-	  ip6_hdr_len += ip6_ext_header_len (p);
-	  while (ip6_ext_hdr (p->next_hdr))
-	    {
-	      ip6_hdr_len += ip6_ext_header_len (p);
-	      p = ip6_ext_next_header (p);
-	    }
-	  l4_proto = p->next_hdr;
-	}
-      else
-	l4_proto = ip6->protocol;
-      vnet_buffer (b)->l4_hdr_offset = l2hdr_sz + ip6_hdr_len;
-    }
-
-  if (l4_proto == IP_PROTOCOL_TCP)
-    {
-      oflags |= VNET_BUFFER_OFFLOAD_F_TCP_CKSUM;
-      tcp_header_t *tcp =
-	(tcp_header_t *) (b->data + vnet_buffer (b)->l4_hdr_offset);
-      *l4_hdr_sz = tcp_header_bytes (tcp);
-    }
-  else if (l4_proto == IP_PROTOCOL_UDP)
-    {
-      oflags |= VNET_BUFFER_OFFLOAD_F_UDP_CKSUM;
-      *l4_hdr_sz = sizeof (udp_header_t);
-    }
-
-  if (oflags)
-    vnet_buffer_offload_flags_set (b, oflags);
-}
-
-always_inline uword
-af_packet_v3_device_input_fn (vlib_main_t *vm, vlib_node_runtime_t *node,
-			      vlib_frame_t *frame, af_packet_if_t *apif,
-			      u16 queue_id, u8 is_cksum_gso_enabled)
-{
-  af_packet_main_t *apm = &af_packet_main;
-  af_packet_queue_t *rx_queue = vec_elt_at_index (apif->rx_queues, queue_id);
-  tpacket3_hdr_t *tph;
-  u32 next_index;
-  u32 n_free_bufs;
-  u32 n_rx_packets = 0;
-  u32 n_rx_bytes = 0;
-  u32 timedout_blk = 0;
-  u32 total = 0;
-  u32 *to_next = 0;
-  u32 block = rx_queue->next_rx_block;
-  u32 block_nr = rx_queue->rx_req->req3.tp_block_nr;
-  u8 *block_start = 0;
-  uword n_trace = vlib_get_trace_count (vm, node);
-  u32 thread_index = vm->thread_index;
-  u32 n_buffer_bytes = vlib_buffer_get_default_data_size (vm);
-  u32 min_bufs = rx_queue->rx_req->req3.tp_frame_size / n_buffer_bytes;
-  u32 num_pkts = 0;
-  u32 rx_frame_offset = 0;
-  block_desc_t *bd = 0;
-  vlib_buffer_t bt = {};
-  u8 is_ip = (apif->mode == AF_PACKET_IF_MODE_IP);
-
-  if (is_ip)
-    next_index = VNET_DEVICE_INPUT_NEXT_IP4_INPUT;
-  else
-    {
-      next_index = VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT;
-      if (PREDICT_FALSE (apif->per_interface_next_index != ~0))
-	next_index = apif->per_interface_next_index;
-
-      /* redirect if feature path enabled */
-      vnet_feature_start_device_input_x1 (apif->sw_if_index, &next_index, &bt);
-    }
-
-  if ((((block_desc_t *) (block_start = rx_queue->rx_ring[block]))
-	 ->hdr.bh1.block_status &
-       TP_STATUS_USER) != 0)
-    {
-      u32 n_required = 0;
-      bd = (block_desc_t *) block_start;
-
-      if (PREDICT_FALSE (rx_queue->is_rx_pending))
-	{
-	  num_pkts = rx_queue->num_rx_pkts;
-	  rx_frame_offset = rx_queue->rx_frame_offset;
-	  rx_queue->is_rx_pending = 0;
-	}
-      else
-	{
-	  num_pkts = bd->hdr.bh1.num_pkts;
-	  rx_frame_offset = sizeof (block_desc_t);
-	  total++;
-
-	  if (TP_STATUS_BLK_TMO & bd->hdr.bh1.block_status)
-	    timedout_blk++;
-	}
-
-      n_required = clib_max (num_pkts, VLIB_FRAME_SIZE);
-      n_free_bufs = vec_len (apm->rx_buffers[thread_index]);
-      if (PREDICT_FALSE (n_free_bufs < n_required))
-	{
-	  vec_validate (apm->rx_buffers[thread_index],
-			n_required + n_free_bufs - 1);
-	  n_free_bufs += vlib_buffer_alloc (
-	    vm, &apm->rx_buffers[thread_index][n_free_bufs], n_required);
-	  vec_set_len (apm->rx_buffers[thread_index], n_free_bufs);
-	}
-
-      while (num_pkts && (n_free_bufs >= min_bufs))
-	{
-	  u32 next0 = next_index;
-	  u32 n_left_to_next;
-
-	  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
-
-	  while (num_pkts && n_left_to_next && (n_free_bufs >= min_bufs))
-	    {
-	      tph = (tpacket3_hdr_t *) (block_start + rx_frame_offset);
-
-	      if (num_pkts > 1)
-		CLIB_PREFETCH (block_start + rx_frame_offset +
-				 tph->tp_next_offset,
-			       2 * CLIB_CACHE_LINE_BYTES, LOAD);
-
-	      vlib_buffer_t *b0 = 0, *first_b0 = 0, *prev_b0 = 0;
-	      vnet_virtio_net_hdr_t *vnet_hdr = 0;
-	      u32 data_len = tph->tp_snaplen;
-	      u32 offset = 0;
-	      u32 bi0 = ~0, first_bi0 = ~0;
-	      u8 l4_hdr_sz = 0;
-
-	      if (is_cksum_gso_enabled)
-		vnet_hdr =
-		  (vnet_virtio_net_hdr_t *) ((u8 *) tph + tph->tp_mac -
-					     sizeof (vnet_virtio_net_hdr_t));
-
-	      // save current state and return
-	      if (PREDICT_FALSE (((data_len / n_buffer_bytes) + 1) >
-				 vec_len (apm->rx_buffers[thread_index])))
-		{
-		  rx_queue->rx_frame_offset = rx_frame_offset;
-		  rx_queue->num_rx_pkts = num_pkts;
-		  rx_queue->is_rx_pending = 1;
-		  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
-		  goto done;
-		}
-
-	      while (data_len)
-		{
-		  /* grab free buffer */
-		  u32 last_empty_buffer =
-		    vec_len (apm->rx_buffers[thread_index]) - 1;
-		  bi0 = apm->rx_buffers[thread_index][last_empty_buffer];
-		  vec_set_len (apm->rx_buffers[thread_index],
-			       last_empty_buffer);
-		  n_free_bufs--;
-
-		  /* copy data */
-		  u32 bytes_to_copy =
-		    data_len > n_buffer_bytes ? n_buffer_bytes : data_len;
-		  u32 vlan_len = 0;
-		  u32 bytes_copied = 0;
-
-		  b0 = vlib_get_buffer (vm, bi0);
-		  b0->current_data = 0;
-
-		  /* Kernel removes VLAN headers, so reconstruct VLAN */
-		  if (PREDICT_FALSE (tph->tp_status & TP_STATUS_VLAN_VALID))
-		    {
-		      if (PREDICT_TRUE (offset == 0))
-			{
-			  clib_memcpy_fast (vlib_buffer_get_current (b0),
-					    (u8 *) tph + tph->tp_mac,
-					    sizeof (ethernet_header_t));
-			  ethernet_header_t *eth =
-			    vlib_buffer_get_current (b0);
-			  ethernet_vlan_header_t *vlan =
-			    (ethernet_vlan_header_t *) (eth + 1);
-			  vlan->priority_cfi_and_id =
-			    clib_host_to_net_u16 (tph->hv1.tp_vlan_tci);
-			  vlan->type = eth->type;
-			  eth->type =
-			    clib_host_to_net_u16 (ETHERNET_TYPE_VLAN);
-			  vlan_len = sizeof (ethernet_vlan_header_t);
-			  bytes_copied = sizeof (ethernet_header_t);
-			}
-		    }
-		  clib_memcpy_fast (((u8 *) vlib_buffer_get_current (b0)) +
-				      bytes_copied + vlan_len,
-				    (u8 *) tph + tph->tp_mac + offset +
-				      bytes_copied,
-				    (bytes_to_copy - bytes_copied));
-
-		  /* fill buffer header */
-		  b0->current_length = bytes_to_copy + vlan_len;
-
-		  if (offset == 0)
-		    {
-		      b0->total_length_not_including_first_buffer = 0;
-		      b0->flags = VLIB_BUFFER_TOTAL_LENGTH_VALID;
-		      vnet_buffer (b0)->sw_if_index[VLIB_RX] =
-			apif->sw_if_index;
-		      vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~0;
-		      first_b0 = b0;
-		      first_bi0 = bi0;
-		      if (is_cksum_gso_enabled)
-			{
-			  if (vnet_hdr->flags & VIRTIO_NET_HDR_F_NEEDS_CSUM)
-			    fill_cksum_offload (first_b0, &l4_hdr_sz, is_ip);
-			  if (vnet_hdr->gso_type & (VIRTIO_NET_HDR_GSO_TCPV4 |
-						    VIRTIO_NET_HDR_GSO_TCPV6))
-			    fill_gso_offload (first_b0, vnet_hdr->gso_size,
-					      l4_hdr_sz);
-			}
-		    }
-		  else
-		    buffer_add_to_chain (b0, first_b0, prev_b0, bi0);
-
-		  prev_b0 = b0;
-		  offset += bytes_to_copy;
-		  data_len -= bytes_to_copy;
-		}
-	      n_rx_packets++;
-	      n_rx_bytes += tph->tp_snaplen;
-	      to_next[0] = first_bi0;
-	      to_next += 1;
-	      n_left_to_next--;
-
-	      /* drop partial packets */
-	      if (PREDICT_FALSE (tph->tp_len != tph->tp_snaplen))
-		{
-		  next0 = VNET_DEVICE_INPUT_NEXT_DROP;
-		  first_b0->error =
-		    node->errors[AF_PACKET_INPUT_ERROR_PARTIAL_PKT];
-		}
-	      else
-		{
-		  if (PREDICT_FALSE (apif->mode == AF_PACKET_IF_MODE_IP))
-		    {
-		      switch (first_b0->data[0] & 0xf0)
-			{
-			case 0x40:
-			  next0 = VNET_DEVICE_INPUT_NEXT_IP4_INPUT;
-			  break;
-			case 0x60:
-			  next0 = VNET_DEVICE_INPUT_NEXT_IP6_INPUT;
-			  break;
-			default:
-			  next0 = VNET_DEVICE_INPUT_NEXT_DROP;
-			  break;
-			}
-		      if (PREDICT_FALSE (apif->per_interface_next_index != ~0))
-			next0 = apif->per_interface_next_index;
-		    }
-		  else
-		    {
-		      /* copy feature arc data from template */
-		      first_b0->current_config_index = bt.current_config_index;
-		      vnet_buffer (first_b0)->feature_arc_index =
-			vnet_buffer (&bt)->feature_arc_index;
-		    }
-		}
-
-	      /* trace */
-	      if (PREDICT_FALSE (n_trace > 0 &&
-				 vlib_trace_buffer (vm, node, next0, first_b0,
-						    /* follow_chain */ 0)))
-		{
-		  af_packet_input_trace_t *tr;
-		  vlib_set_trace_count (vm, node, --n_trace);
-		  tr = vlib_add_trace (vm, node, first_b0, sizeof (*tr));
-		  tr->is_v3 = 1;
-		  tr->next_index = next0;
-		  tr->hw_if_index = apif->hw_if_index;
-		  tr->queue_id = queue_id;
-		  tr->block = block;
-		  tr->block_start = bd;
-		  tr->pkt_num = bd->hdr.bh1.num_pkts - num_pkts;
-		  clib_memcpy_fast (&tr->bd, bd, sizeof (block_desc_t));
-		  clib_memcpy_fast (&tr->tph3, tph, sizeof (tpacket3_hdr_t));
-		  if (is_cksum_gso_enabled)
-		    clib_memcpy_fast (&tr->vnet_hdr, vnet_hdr,
-				      sizeof (vnet_virtio_net_hdr_t));
-		  else
-		    clib_memset_u8 (&tr->vnet_hdr, 0,
-				    sizeof (vnet_virtio_net_hdr_t));
-		}
-
-	      /* enque and take next packet */
-	      vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
-					       n_left_to_next, first_bi0,
-					       next0);
-
-	      /* next packet */
-	      num_pkts--;
-	      rx_frame_offset += tph->tp_next_offset;
-	    }
-
-	  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
-	}
-
-      if (PREDICT_TRUE (num_pkts == 0))
-	{
-	  bd->hdr.bh1.block_status = TP_STATUS_KERNEL;
-	  block = (block + 1) % block_nr;
-	}
-      else
-	{
-	  rx_queue->rx_frame_offset = rx_frame_offset;
-	  rx_queue->num_rx_pkts = num_pkts;
-	  rx_queue->is_rx_pending = 1;
-	}
-    }
-
-  rx_queue->next_rx_block = block;
-
-done:
-
-  if (apm->polling_count == 0)
-    {
-      if ((((block_desc_t *) (block_start = rx_queue->rx_ring[block]))
-	     ->hdr.bh1.block_status &
-	   TP_STATUS_USER) != 0)
-	vlib_node_set_state (vm, node->node_index, VLIB_NODE_STATE_POLLING);
-      else
-	vlib_node_set_state (vm, node->node_index, VLIB_NODE_STATE_INTERRUPT);
-    }
-
-  vlib_error_count (vm, node->node_index, AF_PACKET_INPUT_ERROR_TOTAL_RECV_BLK,
-		    total);
-  vlib_error_count (vm, node->node_index, AF_PACKET_INPUT_ERROR_TIMEDOUT_BLK,
-		    timedout_blk);
-
-  vlib_increment_combined_counter
-    (vnet_get_main ()->interface_main.combined_sw_if_counters
-     + VNET_INTERFACE_COUNTER_RX,
-     vlib_get_thread_index (), apif->hw_if_index, n_rx_packets, n_rx_bytes);
-
-  vnet_device_increment_rx_packets (thread_index, n_rx_packets);
-  return n_rx_packets;
-}
-
-always_inline uword
-af_packet_v2_device_input_fn (vlib_main_t *vm, vlib_node_runtime_t *node,
-			      vlib_frame_t *frame, af_packet_if_t *apif,
-			      u16 queue_id, u8 is_cksum_gso_enabled)
-{
-  af_packet_main_t *apm = &af_packet_main;
-  af_packet_queue_t *rx_queue = vec_elt_at_index (apif->rx_queues, queue_id);
-  tpacket2_hdr_t *tph;
-  u32 next_index;
-  u32 block = 0;
-  u32 rx_frame;
-  u32 n_free_bufs;
-  u32 n_rx_packets = 0;
-  u32 n_rx_bytes = 0;
-  u32 *to_next = 0;
-  u32 frame_size = rx_queue->rx_req->req.tp_frame_size;
-  u32 frame_num = rx_queue->rx_req->req.tp_frame_nr;
-  u8 *block_start = rx_queue->rx_ring[block];
-  uword n_trace = vlib_get_trace_count (vm, node);
-  u32 thread_index = vm->thread_index;
-  u32 n_buffer_bytes = vlib_buffer_get_default_data_size (vm);
-  u32 min_bufs = rx_queue->rx_req->req.tp_frame_size / n_buffer_bytes;
-  u8 is_ip = (apif->mode == AF_PACKET_IF_MODE_IP);
-  vlib_buffer_t bt = {};
-
-  if (is_ip)
-    {
-      next_index = VNET_DEVICE_INPUT_NEXT_IP4_INPUT;
-    }
-  else
-    {
-      next_index = VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT;
-      if (PREDICT_FALSE (apif->per_interface_next_index != ~0))
-	next_index = apif->per_interface_next_index;
-
-      /* redirect if feature path enabled */
-      vnet_feature_start_device_input_x1 (apif->sw_if_index, &next_index, &bt);
-    }
-
-  n_free_bufs = vec_len (apm->rx_buffers[thread_index]);
-  if (PREDICT_FALSE (n_free_bufs < VLIB_FRAME_SIZE))
-    {
-      vec_validate (apm->rx_buffers[thread_index],
-		    VLIB_FRAME_SIZE + n_free_bufs - 1);
-      n_free_bufs += vlib_buffer_alloc (
-	vm, &apm->rx_buffers[thread_index][n_free_bufs], VLIB_FRAME_SIZE);
-      vec_set_len (apm->rx_buffers[thread_index], n_free_bufs);
-    }
-
-  rx_frame = rx_queue->next_rx_frame;
-  tph = (tpacket2_hdr_t *) (block_start + rx_frame * frame_size);
-  while ((tph->tp_status & TP_STATUS_USER) && (n_free_bufs > min_bufs))
-    {
-      vlib_buffer_t *b0 = 0, *first_b0 = 0, *prev_b0 = 0;
-      u32 next0 = next_index;
-
-      u32 n_left_to_next;
-      vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
-      while ((tph->tp_status & TP_STATUS_USER) && (n_free_bufs > min_bufs) &&
-	     n_left_to_next)
-	{
-	  vnet_virtio_net_hdr_t *vnet_hdr = 0;
-	  u32 data_len = tph->tp_snaplen;
-	  u32 offset = 0;
-	  u32 bi0 = 0, first_bi0 = 0;
-	  u8 l4_hdr_sz = 0;
-
-	  if (is_cksum_gso_enabled)
-	    vnet_hdr =
-	      (vnet_virtio_net_hdr_t *) ((u8 *) tph + tph->tp_mac -
-					 sizeof (vnet_virtio_net_hdr_t));
-	  while (data_len)
-	    {
-	      /* grab free buffer */
-	      u32 last_empty_buffer =
-		vec_len (apm->rx_buffers[thread_index]) - 1;
-	      bi0 = apm->rx_buffers[thread_index][last_empty_buffer];
-	      b0 = vlib_get_buffer (vm, bi0);
-	      vec_set_len (apm->rx_buffers[thread_index], last_empty_buffer);
-	      n_free_bufs--;
-
-	      /* copy data */
-	      u32 bytes_to_copy =
-		data_len > n_buffer_bytes ? n_buffer_bytes : data_len;
-	      u32 vlan_len = 0;
-	      u32 bytes_copied = 0;
-	      b0->current_data = 0;
-	      /* Kernel removes VLAN headers, so reconstruct VLAN */
-	      if (PREDICT_FALSE (tph->tp_status & TP_STATUS_VLAN_VALID))
-		{
-		  if (PREDICT_TRUE (offset == 0))
-		    {
-		      clib_memcpy_fast (vlib_buffer_get_current (b0),
-					(u8 *) tph + tph->tp_mac,
-					sizeof (ethernet_header_t));
-		      ethernet_header_t *eth = vlib_buffer_get_current (b0);
-		      ethernet_vlan_header_t *vlan =
-			(ethernet_vlan_header_t *) (eth + 1);
-		      vlan->priority_cfi_and_id =
-			clib_host_to_net_u16 (tph->tp_vlan_tci);
-		      vlan->type = eth->type;
-		      eth->type = clib_host_to_net_u16 (ETHERNET_TYPE_VLAN);
-		      vlan_len = sizeof (ethernet_vlan_header_t);
-		      bytes_copied = sizeof (ethernet_header_t);
-		    }
-		}
-	      clib_memcpy_fast (((u8 *) vlib_buffer_get_current (b0)) +
-				  bytes_copied + vlan_len,
-				(u8 *) tph + tph->tp_mac + offset +
-				  bytes_copied,
-				(bytes_to_copy - bytes_copied));
-
-	      /* fill buffer header */
-	      b0->current_length = bytes_to_copy + vlan_len;
-
-	      if (offset == 0)
-		{
-		  b0->total_length_not_including_first_buffer = 0;
-		  b0->flags = VLIB_BUFFER_TOTAL_LENGTH_VALID;
-		  vnet_buffer (b0)->sw_if_index[VLIB_RX] = apif->sw_if_index;
-		  vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~0;
-		  first_bi0 = bi0;
-		  first_b0 = vlib_get_buffer (vm, first_bi0);
-
-		  if (is_cksum_gso_enabled)
-		    {
-		      if (vnet_hdr->flags & VIRTIO_NET_HDR_F_NEEDS_CSUM)
-			fill_cksum_offload (first_b0, &l4_hdr_sz, is_ip);
-		      if (vnet_hdr->gso_type & (VIRTIO_NET_HDR_GSO_TCPV4 |
-						VIRTIO_NET_HDR_GSO_TCPV6))
-			fill_gso_offload (first_b0, vnet_hdr->gso_size,
-					  l4_hdr_sz);
-		    }
-		}
-	      else
-		buffer_add_to_chain (b0, first_b0, prev_b0, bi0);
-
-	      prev_b0 = b0;
-	      offset += bytes_to_copy;
-	      data_len -= bytes_to_copy;
-	    }
-	  n_rx_packets++;
-	  n_rx_bytes += tph->tp_snaplen;
-	  to_next[0] = first_bi0;
-	  to_next += 1;
-	  n_left_to_next--;
-
-	  /* drop partial packets */
-	  if (PREDICT_FALSE (tph->tp_len != tph->tp_snaplen))
-	    {
-	      next0 = VNET_DEVICE_INPUT_NEXT_DROP;
-	      first_b0->error =
-		node->errors[AF_PACKET_INPUT_ERROR_PARTIAL_PKT];
-	    }
-	  else
-	    {
-	      if (PREDICT_FALSE (is_ip))
-		{
-		  switch (first_b0->data[0] & 0xf0)
-		    {
-		    case 0x40:
-		      next0 = VNET_DEVICE_INPUT_NEXT_IP4_INPUT;
-		      break;
-		    case 0x60:
-		      next0 = VNET_DEVICE_INPUT_NEXT_IP6_INPUT;
-		      break;
-		    default:
-		      next0 = VNET_DEVICE_INPUT_NEXT_DROP;
-		      break;
-		    }
-		  if (PREDICT_FALSE (apif->per_interface_next_index != ~0))
-		    next0 = apif->per_interface_next_index;
-		}
-	      else
-		{
-		  /* copy feature arc data from template */
-		  first_b0->current_config_index = bt.current_config_index;
-		  vnet_buffer (first_b0)->feature_arc_index =
-		    vnet_buffer (&bt)->feature_arc_index;
-		}
-	    }
-
-	  /* trace */
-	  if (PREDICT_FALSE (n_trace > 0 &&
-			     vlib_trace_buffer (vm, node, next0, first_b0,
-						/* follow_chain */ 0)))
-	    {
-	      af_packet_input_trace_t *tr;
-	      vlib_set_trace_count (vm, node, --n_trace);
-	      tr = vlib_add_trace (vm, node, first_b0, sizeof (*tr));
-	      tr->is_v3 = 0;
-	      tr->next_index = next0;
-	      tr->hw_if_index = apif->hw_if_index;
-	      tr->queue_id = queue_id;
-	      clib_memcpy_fast (&tr->tph2, tph, sizeof (struct tpacket2_hdr));
-	      if (is_cksum_gso_enabled)
-		clib_memcpy_fast (&tr->vnet_hdr, vnet_hdr,
-				  sizeof (vnet_virtio_net_hdr_t));
-	      else
-		clib_memset_u8 (&tr->vnet_hdr, 0,
-				sizeof (vnet_virtio_net_hdr_t));
-	    }
-
-	  /* enque and take next packet */
-	  vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
-					   n_left_to_next, first_bi0, next0);
-
-	  /* next packet */
-	  tph->tp_status = TP_STATUS_KERNEL;
-	  rx_frame = (rx_frame + 1) % frame_num;
-	  tph = (struct tpacket2_hdr *) (block_start + rx_frame * frame_size);
-	}
-
-      vlib_put_next_frame (vm, node, next_index, n_left_to_next);
-    }
-
-  rx_queue->next_rx_frame = rx_frame;
-
-  vlib_increment_combined_counter (
-    vnet_get_main ()->interface_main.combined_sw_if_counters +
-      VNET_INTERFACE_COUNTER_RX,
-    vlib_get_thread_index (), apif->hw_if_index, n_rx_packets, n_rx_bytes);
-
-  vnet_device_increment_rx_packets (thread_index, n_rx_packets);
-  return n_rx_packets;
-}
-
-always_inline uword
-af_packet_device_input_fn (vlib_main_t *vm, vlib_node_runtime_t *node,
-			   vlib_frame_t *frame, af_packet_if_t *apif,
-			   u16 queue_id, u8 is_cksum_gso_enabled)
-
-{
-  if (apif->version == TPACKET_V3)
-    return af_packet_v3_device_input_fn (vm, node, frame, apif, queue_id,
-					 is_cksum_gso_enabled);
-  else
-    return af_packet_v2_device_input_fn (vm, node, frame, apif, queue_id,
-					 is_cksum_gso_enabled);
-}
-
-VLIB_NODE_FN (af_packet_input_node) (vlib_main_t * vm,
-				     vlib_node_runtime_t * node,
-				     vlib_frame_t * frame)
-{
-  u32 n_rx_packets = 0;
-  af_packet_main_t *apm = &af_packet_main;
-  vnet_hw_if_rxq_poll_vector_t *pv;
-  pv = vnet_hw_if_get_rxq_poll_vector (vm, node);
-  for (int i = 0; i < vec_len (pv); i++)
-    {
-      af_packet_if_t *apif;
-      apif = vec_elt_at_index (apm->interfaces, pv[i].dev_instance);
-      if (apif->is_admin_up)
-	{
-	  if (apif->is_cksum_gso_enabled)
-	    n_rx_packets += af_packet_device_input_fn (vm, node, frame, apif,
-						       pv[i].queue_id, 1);
-	  else
-	    n_rx_packets += af_packet_device_input_fn (vm, node, frame, apif,
-						       pv[i].queue_id, 0);
-	}
-    }
-  return n_rx_packets;
-}
-
-VLIB_REGISTER_NODE (af_packet_input_node) = {
-  .name = "af-packet-input",
-  .flags = VLIB_NODE_FLAG_TRACE_SUPPORTED,
-  .sibling_of = "device-input",
-  .format_trace = format_af_packet_input_trace,
-  .type = VLIB_NODE_TYPE_INPUT,
-  .state = VLIB_NODE_STATE_INTERRUPT,
-  .n_errors = AF_PACKET_INPUT_N_ERROR,
-  .error_strings = af_packet_input_error_strings,
-};
-
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */