+++ /dev/null
-/*
- *------------------------------------------------------------------
- * 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:
- */
Code Review / vpp.git / blobdiff