Reorganize source tree to use single autotools instance

Change-Id: I7b51f88292e057c6443b12224486f2d0c9f8ae23
Signed-off-by: Damjan Marion <damarion@cisco.com>

1 files changed, 0 insertions, 1328 deletions

diff --git a/vnet/vnet/unix/tapcli.c b/vnet/vnet/unix/tapcli.c
deleted file mode 100644
index 9862a2bda50..00000000000
--- a/vnet/vnet/unix/tapcli.c
+++ /dev/null
@@ -1,1328 +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/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 unix_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 main state struct
- */
-typedef struct {
-  /** Vector of iovecs for readv/writev calls. */
-  struct iovec * iovecs;
-
-  /** Vector of VLIB rx buffers to use.  We allocate them in blocks
-     of VLIB_FRAME_SIZE (256). */
-  u32 * rx_buffers;
-
-  /** 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;
-  /** convenience - unix_main_t */
-  unix_main_t * unix_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_args (frame);
-  uword n_packets = frame->n_vectors;
-  tapcli_main_t * tm = &tapcli_main;
-  tapcli_interface_t * ti;
-  int i;
-
-  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->iovecs)
-	_vec_len (tm->iovecs) = 0;
-
-      /* VLIB buffer chain -> Unix iovec(s). */
-      vec_add2 (tm->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->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->iovecs, vec_len (tm->iovecs)) < l)
-	clib_unix_warning ("writev");
-    }
-
-  vlib_buffer_free(vm, vlib_frame_vector_args(frame), frame->n_vectors);
-
-  return n_packets;
-}
-
-VLIB_REGISTER_NODE (tapcli_tx_node,static) = {
-  .function = tapcli_tx,
-  .name = "tapcli-tx",
-  .type = VLIB_NODE_TYPE_INTERNAL,
-  .vector_size = 4,
-};
-
-/**
- * @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;
-
-  vnet_main_t *vnm;
-  vnet_sw_interface_t * si;
-  u8 admin_down;
-  u32 next = node->cached_next_index;
-  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->rx_buffers) < tm->mtu_buffers)) {
-      uword len = vec_len(tm->rx_buffers);
-      _vec_len(tm->rx_buffers) +=
-          vlib_buffer_alloc_from_free_list(vm, &tm->rx_buffers[len],
-                            VLIB_FRAME_SIZE - len, VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX);
-      if (PREDICT_FALSE(vec_len(tm->rx_buffers) < tm->mtu_buffers)) {
-          vlib_node_increment_counter(vm, tapcli_rx_node.index,
-                                      TAPCLI_ERROR_BUFFER_ALLOC,
-                                      tm->mtu_buffers - vec_len(tm->rx_buffers));
-        break;
-      }
-    }
-
-    uword i_rx = vec_len (tm->rx_buffers) - 1;
-
-    /* Allocate RX buffers from end of rx_buffers.
-           Turn them into iovecs to pass to readv. */
-    vec_validate (tm->iovecs, tm->mtu_buffers - 1);
-    for (j = 0; j < tm->mtu_buffers; j++) {
-      b = vlib_get_buffer (vm, tm->rx_buffers[i_rx - j]);
-      tm->iovecs[j].iov_base = b->data;
-      tm->iovecs[j].iov_len = buffer_size;
-    }
-
-    n_bytes_left = readv (ti->unix_fd, tm->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->rx_buffers[i_rx];
-    b = b_first = vlib_get_buffer (vm, tm->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->rx_buffers[i_rx];
-      b = vlib_get_buffer (vm, bi);
-    }
-
-    _vec_len (tm->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, 0);
-
-    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,
-          os_get_cpu_number(), 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);
-  clib_bitmap_foreach (i, tm->pending_read_bitmap,
-  ({
-    vec_add1 (ready_interface_indices, i);
-  }));
-
-  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 _
-};
-
-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,
-};
-
-
-/**
- * @brief Gets called when file descriptor is ready from epoll.
- *
- * @param *uf - unix_file_t
- *
- * @return error - clib_error_t
- *
- */
-static clib_error_t * tapcli_read_ready (unix_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_args (frame);
-  uword n_packets = frame->n_vectors;
-  vlib_buffer_free (vm, buffers, n_packets);
-  vlib_frame_free (vm, node, frame);
-}
-
-VNET_HW_INTERFACE_CLASS (tapcli_interface_class,static) = {
-  .name = "tapcli",
-  .flags = VNET_HW_INTERFACE_CLASS_FLAG_P2P,
-};
-
-/**
- * @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, "tap-%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;
-  u32 speed_duplex = VNET_HW_INTERFACE_FLAG_FULL_DUPLEX
-    | VNET_HW_INTERFACE_FLAG_SPEED_1G;
-
-  if (is_admin_up)
-    hw_flags = VNET_HW_INTERFACE_FLAG_LINK_UP | speed_duplex;
-  else
-    hw_flags = speed_duplex;
-
-  vnet_hw_interface_set_flags (vnm, hw_if_index, hw_flags);
-  return 0;
-}
-
-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,
-};
-
-/**
- * @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;
-}
-
-/**
- * @brief Connect a TAP interface
- *
- * @param vm - vlib_main_t
- * @param intfc_name - u8
- * @param hwaddr_arg - u8
- * @param sw_if_indexp - u32
- *
- * @return rc - int
- *
- */
-int vnet_tap_connect (vlib_main_t * vm, u8 * intfc_name, u8 *hwaddr_arg,
-                      u32 * sw_if_indexp)
-{
-  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;
-
-  memset (&ifr, 0, sizeof (ifr));
-  strncpy(ifr.ifr_name, (char *) 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;
-
-    memset (&ifr, 0, sizeof(ifr));
-    strncpy (ifr.ifr_name, (char *) 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. */
-    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;
-    }
-
-  ti = tapcli_get_new_tapif();
-  ti->per_interface_next_index = ~0;
-
-  if (hwaddr_arg != 0)
-    clib_memcpy(hwaddr, 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;
-    }
-
-  {
-    unix_file_t template = {0};
-    template.read_function = tapcli_read_ready;
-    template.file_descriptor = dev_net_tun_fd;
-    ti->unix_file_index = unix_file_add (&unix_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;
-    hw->max_l3_packet_bytes[VLIB_RX] = hw->max_l3_packet_bytes[VLIB_TX] = hw->max_supported_packet_bytes - sizeof(ethernet_header_t);
-    ti->sw_if_index = hw->sw_if_index;
-    if (sw_if_indexp)
-      *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, u8 * intfc_name,
-                               u8 *hwaddr_arg, u32 * sw_if_indexp,
-                               u8 renumber, u32 custom_dev_instance)
-{
-    int rv = vnet_tap_connect(vm, intfc_name, hwaddr_arg, sw_if_indexp);
-
-    if (!rv && renumber)
-        vnet_interface_name_renumber (*sw_if_indexp, 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->unix_file_index != ~0) {
-    unix_file_del (&unix_main, unix_main.file_pool + ti->unix_file_index);
-    ti->unix_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;
-}
-
-VLIB_CLI_COMMAND (tap_delete_command, static) = {
-    .path = "tap delete",
-    .short_help = "tap delete <vpp-tap-intfc-name>",
-    .function = tap_delete_command_fn,
-};
-
-/**
- * @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, u32 orig_sw_if_index,
-                     u8 * intfc_name, u8 *hwaddr_arg, 
-                     u32 * sw_if_indexp,
-                     u8 renumber, u32 custom_dev_instance)
-{
-    int rv = vnet_tap_delete (vm, orig_sw_if_index);
-
-    if (rv)
-        return rv;
-
-    rv = vnet_tap_connect_renumber(vm, intfc_name, hwaddr_arg, sw_if_indexp,
-            renumber, custom_dev_instance);
-
-    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];
-
-  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;
-
-
-  int rc = vnet_tap_modify (vm, sw_if_index, intfc_name,
-                            (user_hwaddr == 1 ? hwaddr : 0),
-                            &new_sw_if_index, 0, 0);
-
-  if (!rc) {
-    vlib_cli_output (vm, "Modified %U for Linux tap '%s'",
-                   format_vnet_sw_if_index_name, tm->vnet_main, 
-                   new_sw_if_index, intfc_name);
-  } else {
-    vlib_cli_output (vm, "Error during modification of tap interface. (rc: %d)", rc);
-  }
-
-  return 0;
-}
-
-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,
-};
-
-/**
- * @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;
-  tapcli_main_t * tm = &tapcli_main;
-  u8 hwaddr[6];
-  u8 *hwaddr_arg = 0;
-  u32 sw_if_index;
-
-  if (tm->is_disabled)
-    {
-      return clib_error_return (0, "device disabled...");
-    }
-
-  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))
-    hwaddr_arg = hwaddr;
-
-  /* It is here for backward compatibility */
-  if (unformat(input, "hwaddr random"))
-    ;
-
-  int rv = vnet_tap_connect(vm, intfc_name, hwaddr_arg, &sw_if_index);
-  if (rv) {
-    switch (rv) {
-    case VNET_API_ERROR_SYSCALL_ERROR_1:
-      vlib_cli_output (vm, "Couldn't open /dev/net/tun");
-      break;
-
-    case VNET_API_ERROR_SYSCALL_ERROR_2:
-      vlib_cli_output (vm, "Error setting flags on '%s'", intfc_name);
-      break;
-  
-    case VNET_API_ERROR_SYSCALL_ERROR_3:
-      vlib_cli_output (vm, "Couldn't open provisioning socket");
-      break;
-
-    case VNET_API_ERROR_SYSCALL_ERROR_4:
-      vlib_cli_output (vm, "Couldn't get if_index");
-      break;
-    
-    case VNET_API_ERROR_SYSCALL_ERROR_5:
-      vlib_cli_output (vm, "Couldn't bind provisioning socket");
-      break;
-
-    case VNET_API_ERROR_SYSCALL_ERROR_6:
-      vlib_cli_output (0, "Couldn't set device non-blocking flag");
-      break;
-
-    case VNET_API_ERROR_SYSCALL_ERROR_7:
-      vlib_cli_output (0, "Couldn't set device MTU");
-      break;
-
-    case VNET_API_ERROR_SYSCALL_ERROR_8:
-      vlib_cli_output (0, "Couldn't get interface flags");
-      break;
-
-    case VNET_API_ERROR_SYSCALL_ERROR_9:
-      vlib_cli_output (0, "Couldn't set intfc admin state up");
-      break;
-
-    case VNET_API_ERROR_INVALID_REGISTRATION:
-      vlib_cli_output (0, "Invalid registration");
-      break;
-    default:
-      vlib_cli_output (0, "Unknown error: %d", rv);
-      break;
-    }
-    return 0;
-  }
-
-  vlib_cli_output(vm, "%U\n", format_vnet_sw_if_index_name, vnet_get_main(), sw_if_index);
-  return 0;
-  }
-
-VLIB_CLI_COMMAND (tap_connect_command, static) = {
-    .path = "tap connect",
-    .short_help = "tap connect <intfc-name> [hwaddr <addr>]",
-    .function = tap_connect_command_fn,
-};
-
-/**
- * @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;
-
-  tm->vlib_main = vm;
-  tm->vnet_main = vnet_get_main();
-  tm->unix_main = &unix_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));
-  tm->rx_buffers = 0;
-  vec_alloc(tm->rx_buffers, VLIB_FRAME_SIZE);
-  vec_reset_length(tm->rx_buffers);
-  vm->os_punt_frame = tapcli_nopunt_frame;
-  return 0;
-}
-
-VLIB_INIT_FUNCTION (tapcli_init);