deprecate tapcli

Change-Id: I82dceaa27a7b0c96de077cf283e4f64aa426f271
Signed-off-by: Damjan Marion <damarion@cisco.com>

1 files changed, 0 insertions, 1552 deletions

diff --git a/src/vnet/unix/tapcli.c b/src/vnet/unix/tapcli.c
deleted file mode 100644
index b4df8e84fe4..00000000000
--- a/src/vnet/unix/tapcli.c
+++ /dev/null
@@ -1,1552 +0,0 @@
-/*
- *------------------------------------------------------------------
- * tapcli.c - dynamic tap interface hookup
- *
- * Copyright (c) 2009 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.
- *------------------------------------------------------------------
- */
-/**
- * @file
- * @brief  dynamic tap interface hookup
- */
-
-#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 <linux/if_arp.h>
-#include <linux/if_tun.h>
-
-#include <vlib/vlib.h>
-#include <vlib/unix/unix.h>
-
-#include <vnet/ip/ip.h>
-
-#include <vnet/ethernet/ethernet.h>
-
-#include <vnet/feature/feature.h>
-#include <vnet/devices/devices.h>
-#include <vnet/unix/tuntap.h>
-#include <vnet/unix/tapcli.h>
-
-static vnet_device_class_t tapcli_dev_class;
-static vnet_hw_interface_class_t tapcli_interface_class;
-static vlib_node_registration_t tapcli_rx_node;
-
-static void tapcli_nopunt_frame (vlib_main_t * vm,
-				 vlib_node_runtime_t * node,
-				 vlib_frame_t * frame);
-/**
- * @brief Struct for the tapcli interface
- */
-typedef struct
-{
-  u32 unix_fd;
-  u32 clib_file_index;
-  u32 provision_fd;
-  /** For counters */
-  u32 sw_if_index;
-  u32 hw_if_index;
-  u32 is_promisc;
-  struct ifreq ifr;
-  u32 per_interface_next_index;
-  /** for delete */
-  u8 active;
-} tapcli_interface_t;
-
-/**
- * @brief Struct for RX trace
- */
-typedef struct
-{
-  u16 sw_if_index;
-} tapcli_rx_trace_t;
-
-/**
- * @brief Function to format TAP CLI trace
- *
- * @param *s - u8 - formatting string
- * @param *va - va_list
- *
- * @return *s - u8 - formatted string
- *
- */
-u8 *
-format_tapcli_rx_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 *);
-  vnet_main_t *vnm = vnet_get_main ();
-  tapcli_rx_trace_t *t = va_arg (*va, tapcli_rx_trace_t *);
-  s = format (s, "%U", format_vnet_sw_if_index_name, vnm, t->sw_if_index);
-  return s;
-}
-
-/**
- * @brief TAPCLI per thread struct
- */
-typedef struct
-{
-  /** Vector of VLIB rx buffers to use.  We allocate them in blocks
-     of VLIB_FRAME_SIZE (256). */
-  u32 *rx_buffers;
-
-  /** Vector of iovecs for readv/writev calls. */
-  struct iovec *iovecs;
-} tapcli_per_thread_t;
-
-/**
- * @brief TAPCLI main state struct
- */
-typedef struct
-{
-  /** per thread variables */
-  tapcli_per_thread_t *threads;
-
-  /** tap device destination MAC address. Required, or Linux drops pkts */
-  u8 ether_dst_mac[6];
-
-  /** Interface MTU in bytes and # of default sized buffers. */
-  u32 mtu_bytes, mtu_buffers;
-
-  /** Vector of tap interfaces */
-  tapcli_interface_t *tapcli_interfaces;
-
-  /** Vector of deleted tap interfaces */
-  u32 *tapcli_inactive_interfaces;
-
-  /** Bitmap of tap interfaces with pending reads */
-  uword *pending_read_bitmap;
-
-  /** Hash table to find tapcli interface given hw_if_index */
-  uword *tapcli_interface_index_by_sw_if_index;
-
-  /** Hash table to find tapcli interface given unix fd */
-  uword *tapcli_interface_index_by_unix_fd;
-
-  /** renumbering table */
-  u32 *show_dev_instance_by_real_dev_instance;
-
-  /** 1 => disable CLI */
-  int is_disabled;
-
-  /** convenience - vlib_main_t */
-  vlib_main_t *vlib_main;
-  /** convenience - vnet_main_t */
-  vnet_main_t *vnet_main;
-} tapcli_main_t;
-
-static tapcli_main_t tapcli_main;
-
-/**
- * @brief tapcli TX node function
- * @node tap-cli-tx
- *
- * Output node, writes the buffers comprising the incoming frame
- * to the tun/tap device, aka hands them to the Linux kernel stack.
- *
- * @param *vm - vlib_main_t
- * @param *node - vlib_node_runtime_t
- * @param *frame - vlib_frame_t
- *
- * @return n_packets - uword
- *
- */
-static uword
-tapcli_tx (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
-{
-  u32 *buffers = vlib_frame_vector_args (frame);
-  uword n_packets = frame->n_vectors;
-  tapcli_main_t *tm = &tapcli_main;
-  tapcli_interface_t *ti;
-  int i;
-  u16 thread_index = vm->thread_index;
-
-  for (i = 0; i < n_packets; i++)
-    {
-      struct iovec *iov;
-      vlib_buffer_t *b;
-      uword l;
-      vnet_hw_interface_t *hw;
-      uword *p;
-      u32 tx_sw_if_index;
-
-      b = vlib_get_buffer (vm, buffers[i]);
-
-      tx_sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_TX];
-      if (tx_sw_if_index == (u32) ~ 0)
-	tx_sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_RX];
-
-      ASSERT (tx_sw_if_index != (u32) ~ 0);
-
-      /* Use the sup intfc to finesse vlan subifs */
-      hw = vnet_get_sup_hw_interface (tm->vnet_main, tx_sw_if_index);
-      tx_sw_if_index = hw->sw_if_index;
-
-      p = hash_get (tm->tapcli_interface_index_by_sw_if_index,
-		    tx_sw_if_index);
-      if (p == 0)
-	{
-	  clib_warning ("sw_if_index %d unknown", tx_sw_if_index);
-	  /* $$$ leak, but this should never happen... */
-	  continue;
-	}
-      else
-	ti = vec_elt_at_index (tm->tapcli_interfaces, p[0]);
-
-      /* Re-set iovecs if present. */
-      if (tm->threads[thread_index].iovecs)
-	_vec_len (tm->threads[thread_index].iovecs) = 0;
-
-      /* VLIB buffer chain -> Unix iovec(s). */
-      vec_add2 (tm->threads[thread_index].iovecs, iov, 1);
-      iov->iov_base = b->data + b->current_data;
-      iov->iov_len = l = b->current_length;
-
-      if (PREDICT_FALSE (b->flags & VLIB_BUFFER_NEXT_PRESENT))
-	{
-	  do
-	    {
-	      b = vlib_get_buffer (vm, b->next_buffer);
-
-	      vec_add2 (tm->threads[thread_index].iovecs, iov, 1);
-
-	      iov->iov_base = b->data + b->current_data;
-	      iov->iov_len = b->current_length;
-	      l += b->current_length;
-	    }
-	  while (b->flags & VLIB_BUFFER_NEXT_PRESENT);
-	}
-
-      if (writev (ti->unix_fd, tm->threads[thread_index].iovecs,
-		  vec_len (tm->threads[thread_index].iovecs)) < l)
-	clib_unix_warning ("writev");
-    }
-
-  vlib_buffer_free (vm, vlib_frame_vector_args (frame), frame->n_vectors);
-
-  return n_packets;
-}
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (tapcli_tx_node,static) = {
-  .function = tapcli_tx,
-  .name = "tapcli-tx",
-  .type = VLIB_NODE_TYPE_INTERNAL,
-  .vector_size = 4,
-};
-/* *INDENT-ON* */
-
-/**
- * @brief Dispatch tapcli RX node function for node tap_cli_rx
- *
- *
- * @param *vm - vlib_main_t
- * @param *node - vlib_node_runtime_t
- * @param *ti - tapcli_interface_t
- *
- * @return n_packets - uword
- *
- */
-static uword
-tapcli_rx_iface (vlib_main_t * vm,
-		 vlib_node_runtime_t * node, tapcli_interface_t * ti)
-{
-  tapcli_main_t *tm = &tapcli_main;
-  const uword buffer_size = VLIB_BUFFER_DATA_SIZE;
-  u32 n_trace = vlib_get_trace_count (vm, node);
-  u8 set_trace = 0;
-  u16 thread_index = vm->thread_index;
-  vnet_main_t *vnm;
-  vnet_sw_interface_t *si;
-  u8 admin_down;
-  u32 next = VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT;
-  u32 n_left_to_next, next_index;
-  u32 *to_next;
-
-  vnm = vnet_get_main ();
-  si = vnet_get_sw_interface (vnm, ti->sw_if_index);
-  admin_down = !(si->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP);
-
-  vlib_get_next_frame (vm, node, next, to_next, n_left_to_next);
-
-  while (n_left_to_next)
-    {				// Fill at most one vector
-      vlib_buffer_t *b_first, *b, *prev;
-      u32 bi_first, bi;
-      word n_bytes_in_packet;
-      int j, n_bytes_left;
-
-      if (PREDICT_FALSE (vec_len (tm->threads[thread_index].rx_buffers) <
-			 tm->mtu_buffers))
-	{
-	  uword len = vec_len (tm->threads[thread_index].rx_buffers);
-	  _vec_len (tm->threads[thread_index].rx_buffers) +=
-	    vlib_buffer_alloc (vm, &tm->threads[thread_index].rx_buffers[len],
-			       VLIB_FRAME_SIZE - len);
-	  if (PREDICT_FALSE
-	      (vec_len (tm->threads[thread_index].rx_buffers) <
-	       tm->mtu_buffers))
-	    {
-	      vlib_node_increment_counter (vm, tapcli_rx_node.index,
-					   TAPCLI_ERROR_BUFFER_ALLOC,
-					   tm->mtu_buffers -
-					   vec_len (tm->threads
-						    [thread_index].
-						    rx_buffers));
-	      break;
-	    }
-	}
-
-      uword i_rx = vec_len (tm->threads[thread_index].rx_buffers) - 1;
-
-      /* Allocate RX buffers from end of rx_buffers.
-         Turn them into iovecs to pass to readv. */
-      vec_validate (tm->threads[thread_index].iovecs, tm->mtu_buffers - 1);
-      for (j = 0; j < tm->mtu_buffers; j++)
-	{
-	  b =
-	    vlib_get_buffer (vm,
-			     tm->threads[thread_index].rx_buffers[i_rx - j]);
-	  tm->threads[thread_index].iovecs[j].iov_base = b->data;
-	  tm->threads[thread_index].iovecs[j].iov_len = buffer_size;
-	}
-
-      n_bytes_left = readv (ti->unix_fd, tm->threads[thread_index].iovecs,
-			    tm->mtu_buffers);
-      n_bytes_in_packet = n_bytes_left;
-      if (n_bytes_left <= 0)
-	{
-	  if (errno != EAGAIN)
-	    {
-	      vlib_node_increment_counter (vm, tapcli_rx_node.index,
-					   TAPCLI_ERROR_READ, 1);
-	    }
-	  break;
-	}
-
-      bi_first = tm->threads[thread_index].rx_buffers[i_rx];
-      b = b_first = vlib_get_buffer (vm,
-				     tm->threads[thread_index].
-				     rx_buffers[i_rx]);
-      prev = NULL;
-
-      while (1)
-	{
-	  b->current_length =
-	    n_bytes_left < buffer_size ? n_bytes_left : buffer_size;
-	  n_bytes_left -= buffer_size;
-
-	  if (prev)
-	    {
-	      prev->next_buffer = bi;
-	      prev->flags |= VLIB_BUFFER_NEXT_PRESENT;
-	    }
-	  prev = b;
-
-	  /* last segment */
-	  if (n_bytes_left <= 0)
-	    break;
-
-	  i_rx--;
-	  bi = tm->threads[thread_index].rx_buffers[i_rx];
-	  b = vlib_get_buffer (vm, bi);
-	}
-
-      _vec_len (tm->threads[thread_index].rx_buffers) = i_rx;
-
-      b_first->total_length_not_including_first_buffer =
-	(n_bytes_in_packet >
-	 buffer_size) ? n_bytes_in_packet - buffer_size : 0;
-      b_first->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID;
-
-      VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b_first);
-
-      vnet_buffer (b_first)->sw_if_index[VLIB_RX] = ti->sw_if_index;
-      vnet_buffer (b_first)->sw_if_index[VLIB_TX] = (u32) ~ 0;
-
-      b_first->error = node->errors[TAPCLI_ERROR_NONE];
-      next_index = VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT;
-      next_index = (ti->per_interface_next_index != ~0) ?
-	ti->per_interface_next_index : next_index;
-      next_index = admin_down ? VNET_DEVICE_INPUT_NEXT_DROP : next_index;
-
-      to_next[0] = bi_first;
-      to_next++;
-      n_left_to_next--;
-
-      vnet_feature_start_device_input_x1 (ti->sw_if_index, &next_index,
-					  b_first);
-
-      vlib_validate_buffer_enqueue_x1 (vm, node, next,
-				       to_next, n_left_to_next,
-				       bi_first, next_index);
-
-      /* Interface counters for tapcli interface. */
-      if (PREDICT_TRUE (!admin_down))
-	{
-	  vlib_increment_combined_counter (vnet_main.interface_main.
-					   combined_sw_if_counters +
-					   VNET_INTERFACE_COUNTER_RX,
-					   thread_index, ti->sw_if_index, 1,
-					   n_bytes_in_packet);
-
-	  if (PREDICT_FALSE (n_trace > 0))
-	    {
-	      vlib_trace_buffer (vm, node, next_index,
-				 b_first, /* follow_chain */ 1);
-	      n_trace--;
-	      set_trace = 1;
-	      tapcli_rx_trace_t *t0 =
-		vlib_add_trace (vm, node, b_first, sizeof (*t0));
-	      t0->sw_if_index = si->sw_if_index;
-	    }
-	}
-    }
-  vlib_put_next_frame (vm, node, next, n_left_to_next);
-  if (set_trace)
-    vlib_set_trace_count (vm, node, n_trace);
-  return VLIB_FRAME_SIZE - n_left_to_next;
-}
-
-/**
- * @brief tapcli RX node function
- * @node tap-cli-rx
- *
- * Input node from the Kernel tun/tap device
- *
- * @param *vm - vlib_main_t
- * @param *node - vlib_node_runtime_t
- * @param *frame - vlib_frame_t
- *
- * @return n_packets - uword
- *
- */
-static uword
-tapcli_rx (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
-{
-  tapcli_main_t *tm = &tapcli_main;
-  static u32 *ready_interface_indices;
-  tapcli_interface_t *ti;
-  int i;
-  u32 total_count = 0;
-
-  vec_reset_length (ready_interface_indices);
-  /* *INDENT-OFF* */
-  clib_bitmap_foreach (i, tm->pending_read_bitmap,
-  ({
-    vec_add1 (ready_interface_indices, i);
-  }));
-  /* *INDENT-ON* */
-
-  if (vec_len (ready_interface_indices) == 0)
-    return 0;
-
-  for (i = 0; i < vec_len (ready_interface_indices); i++)
-    {
-      tm->pending_read_bitmap =
-	clib_bitmap_set (tm->pending_read_bitmap,
-			 ready_interface_indices[i], 0);
-
-      ti =
-	vec_elt_at_index (tm->tapcli_interfaces, ready_interface_indices[i]);
-      total_count += tapcli_rx_iface (vm, node, ti);
-    }
-  return total_count;		//This might return more than 256.
-}
-
-/** TAPCLI error strings */
-static char *tapcli_rx_error_strings[] = {
-#define _(sym,string) string,
-  foreach_tapcli_error
-#undef _
-};
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (tapcli_rx_node, static) = {
-  .function = tapcli_rx,
-  .name = "tapcli-rx",
-  .sibling_of = "device-input",
-  .type = VLIB_NODE_TYPE_INPUT,
-  .state = VLIB_NODE_STATE_INTERRUPT,
-  .vector_size = 4,
-  .n_errors = TAPCLI_N_ERROR,
-  .error_strings = tapcli_rx_error_strings,
-  .format_trace = format_tapcli_rx_trace,
-};
-/* *INDENT-ON* */
-
-
-/**
- * @brief Gets called when file descriptor is ready from epoll.
- *
- * @param *uf - clib_file_t
- *
- * @return error - clib_error_t
- *
- */
-static clib_error_t *
-tapcli_read_ready (clib_file_t * uf)
-{
-  vlib_main_t *vm = vlib_get_main ();
-  tapcli_main_t *tm = &tapcli_main;
-  uword *p;
-
-  /** Schedule the rx node */
-  vlib_node_set_interrupt_pending (vm, tapcli_rx_node.index);
-
-  p = hash_get (tm->tapcli_interface_index_by_unix_fd, uf->file_descriptor);
-
-  /** Mark the specific tap interface ready-to-read */
-  if (p)
-    tm->pending_read_bitmap = clib_bitmap_set (tm->pending_read_bitmap,
-					       p[0], 1);
-  else
-    clib_warning ("fd %d not in hash table", uf->file_descriptor);
-
-  return 0;
-}
-
-/**
- * @brief CLI function for TAPCLI configuration
- *
- * @param *vm - vlib_main_t
- * @param *input - unformat_input_t
- *
- * @return error - clib_error_t
- *
- */
-static clib_error_t *
-tapcli_config (vlib_main_t * vm, unformat_input_t * input)
-{
-  tapcli_main_t *tm = &tapcli_main;
-  const uword buffer_size = VLIB_BUFFER_DATA_SIZE;
-
-  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
-    {
-      if (unformat (input, "mtu %d", &tm->mtu_bytes))
-	;
-      else if (unformat (input, "disable"))
-	tm->is_disabled = 1;
-      else
-	return clib_error_return (0, "unknown input `%U'",
-				  format_unformat_error, input);
-    }
-
-  if (tm->is_disabled)
-    return 0;
-
-  if (geteuid ())
-    {
-      clib_warning ("tapcli disabled: must be superuser");
-      tm->is_disabled = 1;
-      return 0;
-    }
-
-  tm->mtu_buffers = (tm->mtu_bytes + (buffer_size - 1)) / buffer_size;
-
-  return 0;
-}
-
-/**
- * @brief Renumber TAPCLI interface
- *
- * @param *hi - vnet_hw_interface_t
- * @param new_dev_instance - u32
- *
- * @return rc - int
- *
- */
-static int
-tap_name_renumber (vnet_hw_interface_t * hi, u32 new_dev_instance)
-{
-  tapcli_main_t *tm = &tapcli_main;
-
-  vec_validate_init_empty (tm->show_dev_instance_by_real_dev_instance,
-			   hi->dev_instance, ~0);
-
-  tm->show_dev_instance_by_real_dev_instance[hi->dev_instance] =
-    new_dev_instance;
-
-  return 0;
-}
-
-VLIB_CONFIG_FUNCTION (tapcli_config, "tapcli");
-
-/**
- * @brief Free "no punt" frame
- *
- * @param *vm - vlib_main_t
- * @param *node - vlib_node_runtime_t
- * @param *frame - vlib_frame_t
- *
- */
-static void
-tapcli_nopunt_frame (vlib_main_t * vm,
-		     vlib_node_runtime_t * node, vlib_frame_t * frame)
-{
-  u32 *buffers = vlib_frame_vector_args (frame);
-  uword n_packets = frame->n_vectors;
-  vlib_buffer_free (vm, buffers, n_packets);
-  vlib_frame_free (vm, node, frame);
-}
-
-/* *INDENT-OFF* */
-VNET_HW_INTERFACE_CLASS (tapcli_interface_class,static) = {
-  .name = "tapcli",
-  .flags = VNET_HW_INTERFACE_CLASS_FLAG_P2P,
-};
-/* *INDENT-ON* */
-
-/**
- * @brief Formatter for TAPCLI interface name
- *
- * @param *s - formatter string
- * @param *args - va_list
- *
- * @return *s - formatted string
- *
- */
-static u8 *
-format_tapcli_interface_name (u8 * s, va_list * args)
-{
-  u32 i = va_arg (*args, u32);
-  u32 show_dev_instance = ~0;
-  tapcli_main_t *tm = &tapcli_main;
-
-  if (i < vec_len (tm->show_dev_instance_by_real_dev_instance))
-    show_dev_instance = tm->show_dev_instance_by_real_dev_instance[i];
-
-  if (show_dev_instance != ~0)
-    i = show_dev_instance;
-
-  s = format (s, "tapcli-%d", i);
-  return s;
-}
-
-/**
- * @brief Modify interface flags for TAPCLI interface
- *
- * @param *vnm - vnet_main_t
- * @param *hw - vnet_hw_interface_t
- * @param flags - u32
- *
- * @return rc - u32
- *
- */
-static u32
-tapcli_flag_change (vnet_main_t * vnm, vnet_hw_interface_t * hw, u32 flags)
-{
-  tapcli_main_t *tm = &tapcli_main;
-  tapcli_interface_t *ti;
-
-  ti = vec_elt_at_index (tm->tapcli_interfaces, hw->dev_instance);
-
-  if (flags & ETHERNET_INTERFACE_FLAG_MTU)
-    {
-      const uword buffer_size = VLIB_BUFFER_DATA_SIZE;
-      tm->mtu_bytes = hw->max_packet_bytes;
-      tm->mtu_buffers = (tm->mtu_bytes + (buffer_size - 1)) / buffer_size;
-    }
-  else
-    {
-      struct ifreq ifr;
-      u32 want_promisc;
-
-      memcpy (&ifr, &ti->ifr, sizeof (ifr));
-
-      /* get flags, modify to bring up interface... */
-      if (ioctl (ti->provision_fd, SIOCGIFFLAGS, &ifr) < 0)
-	{
-	  clib_unix_warning ("Couldn't get interface flags for %s", hw->name);
-	  return 0;
-	}
-
-      want_promisc = (flags & ETHERNET_INTERFACE_FLAG_ACCEPT_ALL) != 0;
-
-      if (want_promisc == ti->is_promisc)
-	return 0;
-
-      if (flags & ETHERNET_INTERFACE_FLAG_ACCEPT_ALL)
-	ifr.ifr_flags |= IFF_PROMISC;
-      else
-	ifr.ifr_flags &= ~(IFF_PROMISC);
-
-      /* get flags, modify to bring up interface... */
-      if (ioctl (ti->provision_fd, SIOCSIFFLAGS, &ifr) < 0)
-	{
-	  clib_unix_warning ("Couldn't set interface flags for %s", hw->name);
-	  return 0;
-	}
-
-      ti->is_promisc = want_promisc;
-    }
-
-  return 0;
-}
-
-/**
- * @brief Setting the TAP interface's next processing node
- *
- * @param *vnm - vnet_main_t
- * @param hw_if_index - u32
- * @param node_index - u32
- *
- */
-static void
-tapcli_set_interface_next_node (vnet_main_t * vnm,
-				u32 hw_if_index, u32 node_index)
-{
-  tapcli_main_t *tm = &tapcli_main;
-  tapcli_interface_t *ti;
-  vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);
-
-  ti = vec_elt_at_index (tm->tapcli_interfaces, hw->dev_instance);
-
-  /** Shut off redirection */
-  if (node_index == ~0)
-    {
-      ti->per_interface_next_index = node_index;
-      return;
-    }
-
-  ti->per_interface_next_index =
-    vlib_node_add_next (tm->vlib_main, tapcli_rx_node.index, node_index);
-}
-
-/**
- * @brief Set link_state == admin_state otherwise things like ip6 neighbor discovery breaks
- *
- * @param *vnm - vnet_main_t
- * @param hw_if_index - u32
- * @param flags - u32
- *
- * @return error - clib_error_t
- */
-static clib_error_t *
-tapcli_interface_admin_up_down (vnet_main_t * vnm, u32 hw_if_index, u32 flags)
-{
-  uword is_admin_up = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) != 0;
-  u32 hw_flags;
-
-  if (is_admin_up)
-    hw_flags = VNET_HW_INTERFACE_FLAG_LINK_UP;
-  else
-    hw_flags = 0;
-
-  vnet_hw_interface_set_flags (vnm, hw_if_index, hw_flags);
-  return 0;
-}
-
-/* *INDENT-OFF* */
-VNET_DEVICE_CLASS (tapcli_dev_class,static) = {
-  .name = "tapcli",
-  .tx_function = tapcli_tx,
-  .format_device_name = format_tapcli_interface_name,
-  .rx_redirect_to_node = tapcli_set_interface_next_node,
-  .name_renumber = tap_name_renumber,
-  .admin_up_down_function = tapcli_interface_admin_up_down,
-};
-/* *INDENT-ON* */
-
-/**
- * @brief Dump TAP interfaces
- *
- * @param **out_tapids - tapcli_interface_details_t
- *
- * @return rc - int
- *
- */
-int
-vnet_tap_dump_ifs (tapcli_interface_details_t ** out_tapids)
-{
-  tapcli_main_t *tm = &tapcli_main;
-  tapcli_interface_t *ti;
-
-  tapcli_interface_details_t *r_tapids = NULL;
-  tapcli_interface_details_t *tapid = NULL;
-
-  vec_foreach (ti, tm->tapcli_interfaces)
-  {
-    if (!ti->active)
-      continue;
-    vec_add2 (r_tapids, tapid, 1);
-    tapid->sw_if_index = ti->sw_if_index;
-    strncpy ((char *) tapid->dev_name, ti->ifr.ifr_name,
-	     sizeof (ti->ifr.ifr_name) - 1);
-  }
-
-  *out_tapids = r_tapids;
-
-  return 0;
-}
-
-/**
- * @brief Get tap interface from inactive interfaces or create new
- *
- * @return interface - tapcli_interface_t
- *
- */
-static tapcli_interface_t *
-tapcli_get_new_tapif ()
-{
-  tapcli_main_t *tm = &tapcli_main;
-  tapcli_interface_t *ti = NULL;
-
-  int inactive_cnt = vec_len (tm->tapcli_inactive_interfaces);
-  // if there are any inactive ifaces
-  if (inactive_cnt > 0)
-    {
-      // take last
-      u32 ti_idx = tm->tapcli_inactive_interfaces[inactive_cnt - 1];
-      if (vec_len (tm->tapcli_interfaces) > ti_idx)
-	{
-	  ti = vec_elt_at_index (tm->tapcli_interfaces, ti_idx);
-	  clib_warning ("reusing tap interface");
-	}
-      // "remove" from inactive list
-      _vec_len (tm->tapcli_inactive_interfaces) -= 1;
-    }
-
-  // ti was not retrieved from inactive ifaces - create new
-  if (!ti)
-    vec_add2 (tm->tapcli_interfaces, ti, 1);
-
-  return ti;
-}
-
-typedef struct
-{
-  ip6_address_t addr;
-  u32 mask_width;
-  unsigned int ifindex;
-} ip6_ifreq_t;
-
-/**
- * @brief Connect a TAP interface
- *
- * @param vm - vlib_main_t
- * @param ap - vnet_tap_connect_args_t
- *
- * @return rc - int
- *
- */
-int
-vnet_tap_connect (vlib_main_t * vm, vnet_tap_connect_args_t * ap)
-{
-  tapcli_main_t *tm = &tapcli_main;
-  tapcli_interface_t *ti = NULL;
-  struct ifreq ifr;
-  int flags;
-  int dev_net_tun_fd;
-  int dev_tap_fd = -1;
-  clib_error_t *error;
-  u8 hwaddr[6];
-  int rv = 0;
-
-  if (tm->is_disabled)
-    {
-      return VNET_API_ERROR_FEATURE_DISABLED;
-    }
-
-  flags = IFF_TAP | IFF_NO_PI;
-
-  if ((dev_net_tun_fd = open ("/dev/net/tun", O_RDWR)) < 0)
-    return VNET_API_ERROR_SYSCALL_ERROR_1;
-
-  clib_memset (&ifr, 0, sizeof (ifr));
-  strncpy (ifr.ifr_name, (char *) ap->intfc_name, sizeof (ifr.ifr_name) - 1);
-  ifr.ifr_flags = flags;
-  if (ioctl (dev_net_tun_fd, TUNSETIFF, (void *) &ifr) < 0)
-    {
-      rv = VNET_API_ERROR_SYSCALL_ERROR_2;
-      goto error;
-    }
-
-  /* Open a provisioning socket */
-  if ((dev_tap_fd = socket (PF_PACKET, SOCK_RAW, htons (ETH_P_ALL))) < 0)
-    {
-      rv = VNET_API_ERROR_SYSCALL_ERROR_3;
-      goto error;
-    }
-
-  /* Find the interface index. */
-  {
-    struct ifreq ifr;
-    struct sockaddr_ll sll;
-
-    clib_memset (&ifr, 0, sizeof (ifr));
-    strncpy (ifr.ifr_name, (char *) ap->intfc_name,
-	     sizeof (ifr.ifr_name) - 1);
-    if (ioctl (dev_tap_fd, SIOCGIFINDEX, &ifr) < 0)
-      {
-	rv = VNET_API_ERROR_SYSCALL_ERROR_4;
-	goto error;
-      }
-
-    /* Bind the provisioning socket to the interface. */
-    clib_memset (&sll, 0, sizeof (sll));
-    sll.sll_family = AF_PACKET;
-    sll.sll_ifindex = ifr.ifr_ifindex;
-    sll.sll_protocol = htons (ETH_P_ALL);
-
-    if (bind (dev_tap_fd, (struct sockaddr *) &sll, sizeof (sll)) < 0)
-      {
-	rv = VNET_API_ERROR_SYSCALL_ERROR_5;
-	goto error;
-      }
-  }
-
-  /* non-blocking I/O on /dev/tapX */
-  {
-    int one = 1;
-    if (ioctl (dev_net_tun_fd, FIONBIO, &one) < 0)
-      {
-	rv = VNET_API_ERROR_SYSCALL_ERROR_6;
-	goto error;
-      }
-  }
-  ifr.ifr_mtu = tm->mtu_bytes;
-  if (ioctl (dev_tap_fd, SIOCSIFMTU, &ifr) < 0)
-    {
-      rv = VNET_API_ERROR_SYSCALL_ERROR_7;
-      goto error;
-    }
-
-  /* get flags, modify to bring up interface... */
-  if (ioctl (dev_tap_fd, SIOCGIFFLAGS, &ifr) < 0)
-    {
-      rv = VNET_API_ERROR_SYSCALL_ERROR_8;
-      goto error;
-    }
-
-  ifr.ifr_flags |= (IFF_UP | IFF_RUNNING);
-
-  if (ioctl (dev_tap_fd, SIOCSIFFLAGS, &ifr) < 0)
-    {
-      rv = VNET_API_ERROR_SYSCALL_ERROR_9;
-      goto error;
-    }
-
-  if (ap->ip4_address_set)
-    {
-      struct sockaddr_in sin;
-      /* ip4: mask defaults to /24 */
-      u32 mask = clib_host_to_net_u32 (0xFFFFFF00);
-
-      clib_memset (&sin, 0, sizeof (sin));
-      sin.sin_family = AF_INET;
-      /* sin.sin_port = 0; */
-      sin.sin_addr.s_addr = ap->ip4_address->as_u32;
-      memcpy (&ifr.ifr_ifru.ifru_addr, &sin, sizeof (sin));
-
-      if (ioctl (dev_tap_fd, SIOCSIFADDR, &ifr) < 0)
-	{
-	  rv = VNET_API_ERROR_SYSCALL_ERROR_10;
-	  goto error;
-	}
-
-      if (ap->ip4_mask_width > 0 && ap->ip4_mask_width < 33)
-	{
-	  mask = ~0;
-	  mask <<= (32 - ap->ip4_mask_width);
-	}
-
-      mask = clib_host_to_net_u32 (mask);
-      sin.sin_family = AF_INET;
-      sin.sin_port = 0;
-      sin.sin_addr.s_addr = mask;
-      memcpy (&ifr.ifr_ifru.ifru_addr, &sin, sizeof (sin));
-
-      if (ioctl (dev_tap_fd, SIOCSIFNETMASK, &ifr) < 0)
-	{
-	  rv = VNET_API_ERROR_SYSCALL_ERROR_10;
-	  goto error;
-	}
-    }
-
-  if (ap->ip6_address_set)
-    {
-      struct ifreq ifr2;
-      ip6_ifreq_t ifr6;
-      int sockfd6;
-
-      sockfd6 = socket (AF_INET6, SOCK_DGRAM, IPPROTO_IP);
-      if (sockfd6 < 0)
-	{
-	  rv = VNET_API_ERROR_SYSCALL_ERROR_10;
-	  goto error;
-	}
-
-      clib_memset (&ifr2, 0, sizeof (ifr));
-      strncpy (ifr2.ifr_name, (char *) ap->intfc_name,
-	       sizeof (ifr2.ifr_name) - 1);
-      if (ioctl (sockfd6, SIOCGIFINDEX, &ifr2) < 0)
-	{
-	  close (sockfd6);
-	  rv = VNET_API_ERROR_SYSCALL_ERROR_4;
-	  goto error;
-	}
-
-      memcpy (&ifr6.addr, ap->ip6_address, sizeof (ip6_address_t));
-      ifr6.mask_width = ap->ip6_mask_width;
-      ifr6.ifindex = ifr2.ifr_ifindex;
-
-      if (ioctl (sockfd6, SIOCSIFADDR, &ifr6) < 0)
-	{
-	  close (sockfd6);
-	  clib_unix_warning ("ifr6");
-	  rv = VNET_API_ERROR_SYSCALL_ERROR_10;
-	  goto error;
-	}
-      close (sockfd6);
-    }
-
-  ti = tapcli_get_new_tapif ();
-  ti->per_interface_next_index = ~0;
-
-  if (ap->hwaddr_arg != 0)
-    clib_memcpy (hwaddr, ap->hwaddr_arg, 6);
-  else
-    {
-      f64 now = vlib_time_now (vm);
-      u32 rnd;
-      rnd = (u32) (now * 1e6);
-      rnd = random_u32 (&rnd);
-
-      memcpy (hwaddr + 2, &rnd, sizeof (rnd));
-      hwaddr[0] = 2;
-      hwaddr[1] = 0xfe;
-    }
-
-  error = ethernet_register_interface
-    (tm->vnet_main,
-     tapcli_dev_class.index,
-     ti - tm->tapcli_interfaces /* device instance */ ,
-     hwaddr /* ethernet address */ ,
-     &ti->hw_if_index, tapcli_flag_change);
-
-  if (error)
-    {
-      clib_error_report (error);
-      rv = VNET_API_ERROR_INVALID_REGISTRATION;
-      goto error;
-    }
-
-  {
-    clib_file_t template = { 0 };
-    template.read_function = tapcli_read_ready;
-    template.file_descriptor = dev_net_tun_fd;
-    ti->clib_file_index = clib_file_add (&file_main, &template);
-    ti->unix_fd = dev_net_tun_fd;
-    ti->provision_fd = dev_tap_fd;
-    clib_memcpy (&ti->ifr, &ifr, sizeof (ifr));
-  }
-
-  {
-    vnet_hw_interface_t *hw;
-    hw = vnet_get_hw_interface (tm->vnet_main, ti->hw_if_index);
-    hw->min_supported_packet_bytes = TAP_MTU_MIN;
-    hw->max_supported_packet_bytes = TAP_MTU_MAX;
-    vnet_sw_interface_set_mtu (tm->vnet_main, hw->sw_if_index, 9000);
-    ti->sw_if_index = hw->sw_if_index;
-    if (ap->sw_if_indexp)
-      *(ap->sw_if_indexp) = hw->sw_if_index;
-  }
-
-  ti->active = 1;
-
-  hash_set (tm->tapcli_interface_index_by_sw_if_index, ti->sw_if_index,
-	    ti - tm->tapcli_interfaces);
-
-  hash_set (tm->tapcli_interface_index_by_unix_fd, ti->unix_fd,
-	    ti - tm->tapcli_interfaces);
-
-  return rv;
-
-error:
-  close (dev_net_tun_fd);
-  if (dev_tap_fd >= 0)
-    close (dev_tap_fd);
-
-  return rv;
-}
-
-/**
- * @brief Renumber a TAP interface
- *
- * @param *vm - vlib_main_t
- * @param *intfc_name - u8
- * @param *hwaddr_arg - u8
- * @param *sw_if_indexp - u32
- * @param renumber - u8
- * @param custom_dev_instance - u32
- *
- * @return rc - int
- *
- */
-int
-vnet_tap_connect_renumber (vlib_main_t * vm, vnet_tap_connect_args_t * ap)
-{
-  int rv = vnet_tap_connect (vm, ap);
-
-  if (!rv && ap->renumber)
-    vnet_interface_name_renumber (*(ap->sw_if_indexp),
-				  ap->custom_dev_instance);
-
-  return rv;
-}
-
-/**
- * @brief Disconnect TAP CLI interface
- *
- * @param *ti - tapcli_interface_t
- *
- * @return rc - int
- *
- */
-static int
-tapcli_tap_disconnect (tapcli_interface_t * ti)
-{
-  int rv = 0;
-  vnet_main_t *vnm = vnet_get_main ();
-  tapcli_main_t *tm = &tapcli_main;
-  u32 sw_if_index = ti->sw_if_index;
-
-  // bring interface down
-  vnet_sw_interface_set_flags (vnm, sw_if_index, 0);
-
-  if (ti->clib_file_index != ~0)
-    {
-      clib_file_del (&file_main, file_main.file_pool + ti->clib_file_index);
-      ti->clib_file_index = ~0;
-    }
-  else
-    close (ti->unix_fd);
-
-  hash_unset (tm->tapcli_interface_index_by_unix_fd, ti->unix_fd);
-  hash_unset (tm->tapcli_interface_index_by_sw_if_index, ti->sw_if_index);
-  close (ti->provision_fd);
-  ti->unix_fd = -1;
-  ti->provision_fd = -1;
-
-  return rv;
-}
-
-/**
- * @brief Delete TAP interface
- *
- * @param *vm - vlib_main_t
- * @param sw_if_index - u32
- *
- * @return rc - int
- *
- */
-int
-vnet_tap_delete (vlib_main_t * vm, u32 sw_if_index)
-{
-  int rv = 0;
-  tapcli_main_t *tm = &tapcli_main;
-  tapcli_interface_t *ti;
-  uword *p = NULL;
-
-  p = hash_get (tm->tapcli_interface_index_by_sw_if_index, sw_if_index);
-  if (p == 0)
-    {
-      clib_warning ("sw_if_index %d unknown", sw_if_index);
-      return VNET_API_ERROR_INVALID_SW_IF_INDEX;
-    }
-  ti = vec_elt_at_index (tm->tapcli_interfaces, p[0]);
-
-  // inactive
-  ti->active = 0;
-  tapcli_tap_disconnect (ti);
-  // add to inactive list
-  vec_add1 (tm->tapcli_inactive_interfaces, ti - tm->tapcli_interfaces);
-
-  // reset renumbered iface
-  if (p[0] < vec_len (tm->show_dev_instance_by_real_dev_instance))
-    tm->show_dev_instance_by_real_dev_instance[p[0]] = ~0;
-
-  ethernet_delete_interface (tm->vnet_main, ti->hw_if_index);
-  return rv;
-}
-
-/**
- * @brief CLI function to delete TAP interface
- *
- * @param *vm - vlib_main_t
- * @param *input - unformat_input_t
- * @param *cmd - vlib_cli_command_t
- *
- * @return error - clib_error_t
- *
- */
-static clib_error_t *
-tap_delete_command_fn (vlib_main_t * vm,
-		       unformat_input_t * input, vlib_cli_command_t * cmd)
-{
-  tapcli_main_t *tm = &tapcli_main;
-  u32 sw_if_index = ~0;
-
-  if (tm->is_disabled)
-    {
-      return clib_error_return (0, "device disabled...");
-    }
-
-  if (unformat (input, "%U", unformat_vnet_sw_interface, tm->vnet_main,
-		&sw_if_index))
-    ;
-  else
-    return clib_error_return (0, "unknown input `%U'",
-			      format_unformat_error, input);
-
-
-  int rc = vnet_tap_delete (vm, sw_if_index);
-
-  if (!rc)
-    {
-      vlib_cli_output (vm, "Deleted.");
-    }
-  else
-    {
-      vlib_cli_output (vm, "Error during deletion of tap interface. (rc: %d)",
-		       rc);
-    }
-
-  return 0;
-}
-
-/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (tap_delete_command, static) = {
-    .path = "tap delete",
-    .short_help = "tap delete <vpp-tap-intfc-name>",
-    .function = tap_delete_command_fn,
-};
-/* *INDENT-ON* */
-
-/**
- * @brief Modifies tap interface - can result in new interface being created
- *
- * @param *vm - vlib_main_t
- * @param orig_sw_if_index - u32
- * @param *intfc_name - u8
- * @param *hwaddr_arg - u8
- * @param *sw_if_indexp - u32
- * @param renumber - u8
- * @param custom_dev_instance - u32
- *
- * @return rc - int
- *
- */
-int
-vnet_tap_modify (vlib_main_t * vm, vnet_tap_connect_args_t * ap)
-{
-  int rv = vnet_tap_delete (vm, ap->orig_sw_if_index);
-
-  if (rv)
-    return rv;
-
-  rv = vnet_tap_connect_renumber (vm, ap);
-
-  return rv;
-}
-
-/**
- * @brief CLI function to modify TAP interface
- *
- * @param *vm - vlib_main_t
- * @param *input - unformat_input_t
- * @param *cmd - vlib_cli_command_t
- *
- * @return error - clib_error_t
- *
- */
-static clib_error_t *
-tap_modify_command_fn (vlib_main_t * vm,
-		       unformat_input_t * input, vlib_cli_command_t * cmd)
-{
-  u8 *intfc_name;
-  tapcli_main_t *tm = &tapcli_main;
-  u32 sw_if_index = ~0;
-  u32 new_sw_if_index = ~0;
-  int user_hwaddr = 0;
-  u8 hwaddr[6];
-  vnet_tap_connect_args_t _a, *ap = &_a;
-
-  if (tm->is_disabled)
-    {
-      return clib_error_return (0, "device disabled...");
-    }
-
-  if (unformat (input, "%U", unformat_vnet_sw_interface, tm->vnet_main,
-		&sw_if_index))
-    ;
-  else
-    return clib_error_return (0, "unknown input `%U'",
-			      format_unformat_error, input);
-
-  if (unformat (input, "%s", &intfc_name))
-    ;
-  else
-    return clib_error_return (0, "unknown input `%U'",
-			      format_unformat_error, input);
-
-  if (unformat (input, "hwaddr %U", unformat_ethernet_address, &hwaddr))
-    user_hwaddr = 1;
-
-
-  clib_memset (ap, 0, sizeof (*ap));
-  ap->orig_sw_if_index = sw_if_index;
-  ap->intfc_name = intfc_name;
-  ap->sw_if_indexp = &new_sw_if_index;
-  if (user_hwaddr)
-    ap->hwaddr_arg = hwaddr;
-
-  int rc = vnet_tap_modify (vm, ap);
-
-  if (!rc)
-    {
-      vlib_cli_output (vm, "Modified %U for Linux tap '%s'",
-		       format_vnet_sw_if_index_name, tm->vnet_main,
-		       *(ap->sw_if_indexp), ap->intfc_name);
-    }
-  else
-    {
-      vlib_cli_output (vm,
-		       "Error during modification of tap interface. (rc: %d)",
-		       rc);
-    }
-
-  return 0;
-}
-
-/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (tap_modify_command, static) = {
-    .path = "tap modify",
-    .short_help = "tap modify <vpp-tap-intfc-name> <linux-intfc-name> [hwaddr <addr>]",
-    .function = tap_modify_command_fn,
-};
-/* *INDENT-ON* */
-
-/**
- * @brief CLI function to connect TAP interface
- *
- * @param *vm - vlib_main_t
- * @param *input - unformat_input_t
- * @param *cmd - vlib_cli_command_t
- *
- * @return error - clib_error_t
- *
- */
-static clib_error_t *
-tap_connect_command_fn (vlib_main_t * vm,
-			unformat_input_t * input, vlib_cli_command_t * cmd)
-{
-  u8 *intfc_name = 0;
-  unformat_input_t _line_input, *line_input = &_line_input;
-  vnet_tap_connect_args_t _a, *ap = &_a;
-  tapcli_main_t *tm = &tapcli_main;
-  u8 hwaddr[6];
-  u8 *hwaddr_arg = 0;
-  u32 sw_if_index;
-  ip4_address_t ip4_address;
-  int ip4_address_set = 0;
-  ip6_address_t ip6_address;
-  int ip6_address_set = 0;
-  u32 ip4_mask_width = 0;
-  u32 ip6_mask_width = 0;
-  clib_error_t *error = NULL;
-
-  if (tm->is_disabled)
-    return clib_error_return (0, "device disabled...");
-
-  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, "hwaddr %U", unformat_ethernet_address,
-		    &hwaddr))
-	hwaddr_arg = hwaddr;
-
-      /* It is here for backward compatibility */
-      else if (unformat (line_input, "hwaddr random"))
-	;
-
-      else if (unformat (line_input, "address %U/%d",
-			 unformat_ip4_address, &ip4_address, &ip4_mask_width))
-	ip4_address_set = 1;
-
-      else if (unformat (line_input, "address %U/%d",
-			 unformat_ip6_address, &ip6_address, &ip6_mask_width))
-	ip6_address_set = 1;
-
-      else if (unformat (line_input, "%s", &intfc_name))
-	;
-      else
-	{
-	  error = clib_error_return (0, "unknown input `%U'",
-				     format_unformat_error, line_input);
-	  goto done;
-	}
-    }
-
-  if (intfc_name == 0)
-    {
-      error = clib_error_return (0, "interface name must be specified");
-      goto done;
-    }
-
-  clib_memset (ap, 0, sizeof (*ap));
-
-  ap->intfc_name = intfc_name;
-  ap->hwaddr_arg = hwaddr_arg;
-  if (ip4_address_set)
-    {
-      ap->ip4_address = &ip4_address;
-      ap->ip4_mask_width = ip4_mask_width;
-      ap->ip4_address_set = 1;
-    }
-  if (ip6_address_set)
-    {
-      ap->ip6_address = &ip6_address;
-      ap->ip6_mask_width = ip6_mask_width;
-      ap->ip6_address_set = 1;
-    }
-
-  ap->sw_if_indexp = &sw_if_index;
-
-  int rv = vnet_tap_connect (vm, ap);
-
-  switch (rv)
-    {
-    case VNET_API_ERROR_SYSCALL_ERROR_1:
-      error = clib_error_return (0, "Couldn't open /dev/net/tun");
-      goto done;
-
-    case VNET_API_ERROR_SYSCALL_ERROR_2:
-      error =
-	clib_error_return (0, "Error setting flags on '%s'", intfc_name);
-      goto done;
-
-    case VNET_API_ERROR_SYSCALL_ERROR_3:
-      error = clib_error_return (0, "Couldn't open provisioning socket");
-      goto done;
-
-    case VNET_API_ERROR_SYSCALL_ERROR_4:
-      error = clib_error_return (0, "Couldn't get if_index");
-      goto done;
-
-    case VNET_API_ERROR_SYSCALL_ERROR_5:
-      error = clib_error_return (0, "Couldn't bind provisioning socket");
-      goto done;
-
-    case VNET_API_ERROR_SYSCALL_ERROR_6:
-      error = clib_error_return (0, "Couldn't set device non-blocking flag");
-      goto done;
-
-    case VNET_API_ERROR_SYSCALL_ERROR_7:
-      error = clib_error_return (0, "Couldn't set device MTU");
-      goto done;
-
-    case VNET_API_ERROR_SYSCALL_ERROR_8:
-      error = clib_error_return (0, "Couldn't get interface flags");
-      goto done;
-
-    case VNET_API_ERROR_SYSCALL_ERROR_9:
-      error = clib_error_return (0, "Couldn't set intfc admin state up");
-      goto done;
-
-    case VNET_API_ERROR_SYSCALL_ERROR_10:
-      error = clib_error_return (0, "Couldn't set intfc address/mask");
-      goto done;
-
-    case VNET_API_ERROR_INVALID_REGISTRATION:
-      error = clib_error_return (0, "Invalid registration");
-      goto done;
-
-    case 0:
-      break;
-
-    default:
-      error = clib_error_return (0, "Unknown error: %d", rv);
-      goto done;
-    }
-
-  vlib_cli_output (vm, "%U\n", format_vnet_sw_if_index_name,
-		   vnet_get_main (), sw_if_index);
-
-done:
-  unformat_free (line_input);
-
-  return error;
-}
-
-/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (tap_connect_command, static) = {
-    .path = "tap connect",
-    .short_help =
-        "tap connect <intfc-name> [address <ip-addr>/mw] [hwaddr <addr>]",
-    .function = tap_connect_command_fn,
-};
-/* *INDENT-ON* */
-
-/**
- * @brief TAPCLI main init
- *
- * @param *vm - vlib_main_t
- *
- * @return error - clib_error_t
- *
- */
-clib_error_t *
-tapcli_init (vlib_main_t * vm)
-{
-  tapcli_main_t *tm = &tapcli_main;
-  vlib_thread_main_t *m = vlib_get_thread_main ();
-  tapcli_per_thread_t *thread;
-
-  tm->vlib_main = vm;
-  tm->vnet_main = vnet_get_main ();
-  tm->mtu_bytes = TAP_MTU_DEFAULT;
-  tm->tapcli_interface_index_by_sw_if_index = hash_create (0, sizeof (uword));
-  tm->tapcli_interface_index_by_unix_fd = hash_create (0, sizeof (uword));
-  vm->os_punt_frame = tapcli_nopunt_frame;
-  vec_validate_aligned (tm->threads, m->n_vlib_mains - 1,
-			CLIB_CACHE_LINE_BYTES);
-  vec_foreach (thread, tm->threads)
-  {
-    thread->iovecs = 0;
-    thread->rx_buffers = 0;
-    vec_alloc (thread->rx_buffers, VLIB_FRAME_SIZE);
-    vec_reset_length (thread->rx_buffers);
-  }
-
-  return 0;
-}
-
-VLIB_INIT_FUNCTION (tapcli_init);
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */