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-rw-r--r--vnet/vnet/mpls/mpls_tunnel.c787
1 files changed, 0 insertions, 787 deletions
diff --git a/vnet/vnet/mpls/mpls_tunnel.c b/vnet/vnet/mpls/mpls_tunnel.c
deleted file mode 100644
index 8d1e30a36fb..00000000000
--- a/vnet/vnet/mpls/mpls_tunnel.c
+++ /dev/null
@@ -1,787 +0,0 @@
-/*
- * mpls_tunnel.c: MPLS tunnel interfaces (i.e. for RSVP-TE)
- *
- * Copyright (c) 2012 Cisco and/or its affiliates.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <vnet/vnet.h>
-#include <vnet/pg/pg.h>
-#include <vnet/mpls/mpls_tunnel.h>
-#include <vnet/ip/ip.h>
-#include <vnet/fib/fib_path_list.h>
-#include <vnet/adj/adj_midchain.h>
-
-/**
- * @brief pool of tunnel instances
- */
-static mpls_tunnel_t *mpls_tunnel_pool;
-
-/**
- * @brief Pool of free tunnel SW indices - i.e. recycled indices
- */
-static u32 * mpls_tunnel_free_hw_if_indices;
-
-/**
- * @brief DB of SW index to tunnel index
- */
-static u32 *mpls_tunnel_db;
-
-/**
- * @brief Get a tunnel object from a SW interface index
- */
-static mpls_tunnel_t*
-mpls_tunnel_get_from_sw_if_index (u32 sw_if_index)
-{
- if ((vec_len(mpls_tunnel_db) < sw_if_index) ||
- (~0 == mpls_tunnel_db[sw_if_index]))
- return (NULL);
-
- return (pool_elt_at_index(mpls_tunnel_pool,
- mpls_tunnel_db[sw_if_index]));
-}
-
-/**
- * @brief Return true if the label stack is imp-null only
- */
-static fib_forward_chain_type_t
-mpls_tunnel_get_fwd_chain_type (const mpls_tunnel_t *mt)
-{
- if ((1 == vec_len(mt->mt_label_stack)) &&
- (mt->mt_label_stack[0] == MPLS_IETF_IMPLICIT_NULL_LABEL))
- {
- /*
- * the only label in the label stack is implicit null
- * we need to build an IP chain.
- */
- if (FIB_PROTOCOL_IP4 == fib_path_list_get_proto(mt->mt_path_list))
- {
- return (FIB_FORW_CHAIN_TYPE_UNICAST_IP4);
- }
- else
- {
- return (FIB_FORW_CHAIN_TYPE_UNICAST_IP6);
- }
- }
- else
- {
- return (FIB_FORW_CHAIN_TYPE_MPLS_NON_EOS);
- }
-}
-
-/**
- * @brief Build a rewrite string for the MPLS tunnel.
- *
- * We have choices here;
- * 1 - have an Adjacency with a zero length string and stack it on
- * MPLS label objects
- * 2 - put the label header rewrites in the adjacency string.
- *
- * We choose 2 since it results in fewer graph nodes in the egress path
- */
-static u8*
-mpls_tunnel_build_rewrite (vnet_main_t * vnm,
- u32 sw_if_index,
- vnet_link_t link_type,
- const void *dst_address)
-{
- mpls_unicast_header_t *muh;
- mpls_tunnel_t *mt;
- u8 *rewrite;
- u32 mti, ii;
-
- rewrite = NULL;
- mti = mpls_tunnel_db[sw_if_index];
- mt = pool_elt_at_index(mpls_tunnel_pool, mti);
-
- /*
- * The vector must be allocated as u8 so the length is correct
- */
- ASSERT(0 < vec_len(mt->mt_label_stack));
- vec_validate(rewrite, (sizeof(*muh) * vec_len(mt->mt_label_stack)) - 1);
- ASSERT(rewrite);
- muh = (mpls_unicast_header_t *)rewrite;
-
- /*
- * The last (inner most) label in the stack may be EOS, all the rest Non-EOS
- */
- for (ii = 0; ii < vec_len(mt->mt_label_stack)-1; ii++)
- {
- vnet_mpls_uc_set_label(&muh[ii].label_exp_s_ttl, mt->mt_label_stack[ii]);
- vnet_mpls_uc_set_ttl(&muh[ii].label_exp_s_ttl, 255);
- vnet_mpls_uc_set_exp(&muh[ii].label_exp_s_ttl, 0);
- vnet_mpls_uc_set_s(&muh[ii].label_exp_s_ttl, MPLS_NON_EOS);
- muh[ii].label_exp_s_ttl = clib_host_to_net_u32(muh[ii].label_exp_s_ttl);
- }
-
- vnet_mpls_uc_set_label(&muh[ii].label_exp_s_ttl, mt->mt_label_stack[ii]);
- vnet_mpls_uc_set_ttl(&muh[ii].label_exp_s_ttl, 255);
- vnet_mpls_uc_set_exp(&muh[ii].label_exp_s_ttl, 0);
-
- if ((VNET_LINK_MPLS == link_type) &&
- (mt->mt_label_stack[ii] != MPLS_IETF_IMPLICIT_NULL_LABEL))
- {
- vnet_mpls_uc_set_s(&muh[ii].label_exp_s_ttl, MPLS_NON_EOS);
- }
- else
- {
- vnet_mpls_uc_set_s(&muh[ii].label_exp_s_ttl, MPLS_EOS);
- }
-
- muh[ii].label_exp_s_ttl = clib_host_to_net_u32(muh[ii].label_exp_s_ttl);
-
- return (rewrite);
-}
-
-/**
- * mpls_tunnel_stack
- *
- * 'stack' (resolve the recursion for) the tunnel's midchain adjacency
- */
-static void
-mpls_tunnel_stack (adj_index_t ai)
-{
- ip_adjacency_t *adj;
- mpls_tunnel_t *mt;
- u32 sw_if_index;
-
- adj = adj_get(ai);
- sw_if_index = adj->rewrite_header.sw_if_index;
-
- mt = mpls_tunnel_get_from_sw_if_index(sw_if_index);
-
- if (NULL == mt)
- return;
-
- /*
- * find the adjacency that is contributed by the FIB path-list
- * that this tunnel resovles via, and use it as the next adj
- * in the midchain
- */
- if (vnet_hw_interface_get_flags(vnet_get_main(),
- mt->mt_hw_if_index) &
- VNET_HW_INTERFACE_FLAG_LINK_UP)
- {
- dpo_id_t dpo = DPO_INVALID;
-
- fib_path_list_contribute_forwarding(mt->mt_path_list,
- mpls_tunnel_get_fwd_chain_type(mt),
- &dpo);
-
- if (DPO_LOAD_BALANCE == dpo.dpoi_type)
- {
- /*
- * we don't support multiple paths, so no need to load-balance.
- * pull the first and only choice and stack directly on that.
- */
- load_balance_t *lb;
-
- lb = load_balance_get (dpo.dpoi_index);
-
- ASSERT(1 == lb->lb_n_buckets);
-
- dpo_copy(&dpo, load_balance_get_bucket_i (lb, 0));
- }
-
- adj_nbr_midchain_stack(ai, &dpo);
- dpo_reset(&dpo);
- }
- else
- {
- adj_nbr_midchain_unstack(ai);
- }
-}
-
-/**
- * @brief Call back when restacking all adjacencies on a MPLS interface
- */
-static adj_walk_rc_t
-mpls_adj_walk_cb (adj_index_t ai,
- void *ctx)
-{
- mpls_tunnel_stack(ai);
-
- return (ADJ_WALK_RC_CONTINUE);
-}
-
-static void
-mpls_tunnel_restack (mpls_tunnel_t *mt)
-{
- fib_protocol_t proto;
-
- /*
- * walk all the adjacencies on the MPLS interface and restack them
- */
- FOR_EACH_FIB_PROTOCOL(proto)
- {
- adj_nbr_walk(mt->mt_sw_if_index,
- proto,
- mpls_adj_walk_cb,
- NULL);
- }
-}
-
-static clib_error_t *
-mpls_tunnel_admin_up_down (vnet_main_t * vnm,
- u32 hw_if_index,
- u32 flags)
-{
- vnet_hw_interface_t * hi;
- mpls_tunnel_t *mt;
-
- hi = vnet_get_hw_interface (vnm, hw_if_index);
-
- mt = mpls_tunnel_get_from_sw_if_index(hi->sw_if_index);
-
- if (NULL == mt)
- return (NULL);
-
- if (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
- vnet_hw_interface_set_flags (vnm, hw_if_index,
- VNET_HW_INTERFACE_FLAG_LINK_UP);
- else
- vnet_hw_interface_set_flags (vnm, hw_if_index, 0 /* down */);
-
- mpls_tunnel_restack(mt);
-
- return (NULL);
-}
-
-/**
- * @brief Fixup the adj rewrite post encap. This is a no-op since the
- * rewrite is a stack of labels.
- */
-static void
-mpls_tunnel_fixup (vlib_main_t *vm,
- ip_adjacency_t *adj,
- vlib_buffer_t *b0)
-{
-}
-
-static void
-mpls_tunnel_update_adj (vnet_main_t * vnm,
- u32 sw_if_index,
- adj_index_t ai)
-{
- adj_nbr_midchain_update_rewrite(
- ai, mpls_tunnel_fixup,
- ADJ_MIDCHAIN_FLAG_NONE,
- mpls_tunnel_build_rewrite(vnm, sw_if_index,
- adj_get_link_type(ai),
- NULL));
-
- mpls_tunnel_stack(ai);
-}
-
-static u8 *
-format_mpls_tunnel_name (u8 * s, va_list * args)
-{
- u32 dev_instance = va_arg (*args, u32);
- return format (s, "mpls-tunnel%d", dev_instance);
-}
-
-static u8 *
-format_mpls_tunnel_device (u8 * s, va_list * args)
-{
- u32 dev_instance = va_arg (*args, u32);
- CLIB_UNUSED (int verbose) = va_arg (*args, int);
-
- return (format (s, "MPLS-tunnel: id %d\n", dev_instance));
-}
-
-/**
- * @brief Packet trace structure
- */
-typedef struct mpls_tunnel_trace_t_
-{
- /**
- * Tunnel-id / index in tunnel vector
- */
- u32 tunnel_id;
-} mpls_tunnel_trace_t;
-
-static u8 *
-format_mpls_tunnel_tx_trace (u8 * s,
- va_list * args)
-{
- CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
- CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
- mpls_tunnel_trace_t * t = va_arg (*args, mpls_tunnel_trace_t *);
-
- s = format (s, "MPLS: tunnel %d", t->tunnel_id);
- return s;
-}
-
-/**
- * @brief TX function. Only called L2. L3 traffic uses the adj-midchains
- */
-static uword
-mpls_tunnel_tx (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
-{
- u32 next_index;
- u32 * from, * to_next, n_left_from, n_left_to_next;
- vnet_interface_output_runtime_t * rd = (void *) node->runtime_data;
- const mpls_tunnel_t *mt;
-
- mt = pool_elt_at_index(mpls_tunnel_pool, rd->dev_instance);
-
- /* Vector of buffer / pkt indices we're supposed to process */
- from = vlib_frame_vector_args (frame);
-
- /* Number of buffers / pkts */
- n_left_from = frame->n_vectors;
-
- /* Speculatively send the first buffer to the last disposition we used */
- next_index = node->cached_next_index;
-
- while (n_left_from > 0)
- {
- /* set up to enqueue to our disposition with index = next_index */
- vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
-
- /*
- * FIXME DUAL LOOP
- */
- while (n_left_from > 0 && n_left_to_next > 0)
- {
- vlib_buffer_t * b0;
- u32 bi0;
-
- bi0 = from[0];
- to_next[0] = bi0;
- from += 1;
- to_next += 1;
- n_left_from -= 1;
- n_left_to_next -= 1;
-
- b0 = vlib_get_buffer(vm, bi0);
-
- vnet_buffer(b0)->ip.adj_index[VLIB_TX] = mt->mt_l2_adj;
-
- if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
- {
- mpls_tunnel_trace_t *tr = vlib_add_trace (vm, node,
- b0, sizeof (*tr));
- tr->tunnel_id = rd->dev_instance;
- }
-
- vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
- to_next, n_left_to_next,
- bi0, mt->mt_l2_tx_arc);
- }
-
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
- }
-
- return frame->n_vectors;
-}
-
-VNET_DEVICE_CLASS (mpls_tunnel_class) = {
- .name = "MPLS tunnel device",
- .format_device_name = format_mpls_tunnel_name,
- .format_device = format_mpls_tunnel_device,
- .format_tx_trace = format_mpls_tunnel_tx_trace,
- .tx_function = mpls_tunnel_tx,
- .admin_up_down_function = mpls_tunnel_admin_up_down,
-};
-
-VNET_HW_INTERFACE_CLASS (mpls_tunnel_hw_interface_class) = {
- .name = "MPLS-Tunnel",
-// .format_header = format_mpls_eth_header_with_length,
-// .unformat_header = unformat_mpls_eth_header,
- .update_adjacency = mpls_tunnel_update_adj,
- .build_rewrite = mpls_tunnel_build_rewrite,
- .flags = VNET_HW_INTERFACE_CLASS_FLAG_P2P,
-};
-
-const mpls_tunnel_t *
-mpls_tunnel_get (u32 mti)
-{
- return (pool_elt_at_index(mpls_tunnel_pool, mti));
-}
-
-/**
- * @brief Walk all the MPLS tunnels
- */
-void
-mpls_tunnel_walk (mpls_tunnel_walk_cb_t cb,
- void *ctx)
-{
- u32 mti;
-
- pool_foreach_index(mti, mpls_tunnel_pool,
- ({
- cb(mti, ctx);
- }));
-}
-
-void
-vnet_mpls_tunnel_del (u32 sw_if_index)
-{
- mpls_tunnel_t *mt;
-
- mt = mpls_tunnel_get_from_sw_if_index(sw_if_index);
-
- if (NULL == mt)
- return;
-
- fib_path_list_child_remove(mt->mt_path_list,
- mt->mt_sibling_index);
- if (ADJ_INDEX_INVALID != mt->mt_l2_adj)
- adj_unlock(mt->mt_l2_adj);
-
- vec_free(mt->mt_label_stack);
-
- vec_add1 (mpls_tunnel_free_hw_if_indices, mt->mt_hw_if_index);
- pool_put(mpls_tunnel_pool, mt);
- mpls_tunnel_db[sw_if_index] = ~0;
-}
-
-void
-vnet_mpls_tunnel_add (fib_route_path_t *rpaths,
- mpls_label_t *label_stack,
- u8 l2_only,
- u32 *sw_if_index)
-{
- vnet_hw_interface_t * hi;
- mpls_tunnel_t *mt;
- vnet_main_t * vnm;
- u32 mti;
-
- vnm = vnet_get_main();
- pool_get(mpls_tunnel_pool, mt);
- memset (mt, 0, sizeof (*mt));
- mti = mt - mpls_tunnel_pool;
- fib_node_init(&mt->mt_node, FIB_NODE_TYPE_MPLS_TUNNEL);
- mt->mt_l2_adj = ADJ_INDEX_INVALID;
-
- /*
- * Create a new, or re=use and old, tunnel HW interface
- */
- if (vec_len (mpls_tunnel_free_hw_if_indices) > 0)
- {
- mt->mt_hw_if_index =
- mpls_tunnel_free_hw_if_indices[vec_len(mpls_tunnel_free_hw_if_indices)-1];
- _vec_len (mpls_tunnel_free_hw_if_indices) -= 1;
- hi = vnet_get_hw_interface (vnm, mt->mt_hw_if_index);
- hi->hw_instance = mti;
- hi->dev_instance = mti;
- }
- else
- {
- mt->mt_hw_if_index = vnet_register_interface(
- vnm,
- mpls_tunnel_class.index,
- mti,
- mpls_tunnel_hw_interface_class.index,
- mti);
- hi = vnet_get_hw_interface(vnm, mt->mt_hw_if_index);
- }
-
- /*
- * Add the new tunnel to the tunnel DB - key:SW if index
- */
- mt->mt_sw_if_index = hi->sw_if_index;
- vec_validate_init_empty(mpls_tunnel_db, mt->mt_sw_if_index, ~0);
- mpls_tunnel_db[mt->mt_sw_if_index] = mti;
-
- /*
- * construct a path-list from the path provided
- */
- mt->mt_path_list = fib_path_list_create(FIB_PATH_LIST_FLAG_SHARED, rpaths);
- mt->mt_sibling_index = fib_path_list_child_add(mt->mt_path_list,
- FIB_NODE_TYPE_MPLS_TUNNEL,
- mti);
-
- mt->mt_label_stack = vec_dup(label_stack);
-
- if (l2_only)
- {
- mt->mt_l2_adj =
- adj_nbr_add_or_lock(fib_path_list_get_proto(mt->mt_path_list),
- VNET_LINK_ETHERNET,
- &zero_addr,
- mt->mt_sw_if_index);
-
- mt->mt_l2_tx_arc = vlib_node_add_named_next(vlib_get_main(),
- hi->tx_node_index,
- "adj-l2-midchain");
- }
-
- *sw_if_index = mt->mt_sw_if_index;
-}
-
-static clib_error_t *
-vnet_create_mpls_tunnel_command_fn (vlib_main_t * vm,
- unformat_input_t * input,
- vlib_cli_command_t * cmd)
-{
- unformat_input_t _line_input, * line_input = &_line_input;
- vnet_main_t * vnm = vnet_get_main();
- u8 is_del = 0;
- u8 l2_only = 0;
- fib_route_path_t rpath, *rpaths = NULL;
- mpls_label_t out_label = MPLS_LABEL_INVALID, *labels = NULL;
- u32 sw_if_index;
-
- memset(&rpath, 0, sizeof(rpath));
-
- /* Get a line of input. */
- if (! unformat_user (input, unformat_line_input, line_input))
- return 0;
-
- while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
- {
- if (unformat (line_input, "del %U",
- unformat_vnet_sw_interface, vnm,
- &sw_if_index))
- is_del = 1;
- else if (unformat (line_input, "add"))
- is_del = 0;
- else if (unformat (line_input, "out-label %U",
- unformat_mpls_unicast_label, &out_label))
- {
- vec_add1(labels, out_label);
- }
- else if (unformat (line_input, "via %U %U",
- unformat_ip4_address,
- &rpath.frp_addr.ip4,
- unformat_vnet_sw_interface, vnm,
- &rpath.frp_sw_if_index))
- {
- rpath.frp_weight = 1;
- rpath.frp_proto = FIB_PROTOCOL_IP4;
- }
-
- else if (unformat (line_input, "via %U %U",
- unformat_ip6_address,
- &rpath.frp_addr.ip6,
- unformat_vnet_sw_interface, vnm,
- &rpath.frp_sw_if_index))
- {
- rpath.frp_weight = 1;
- rpath.frp_proto = FIB_PROTOCOL_IP6;
- }
- else if (unformat (line_input, "via %U",
- unformat_ip6_address,
- &rpath.frp_addr.ip6))
- {
- rpath.frp_fib_index = 0;
- rpath.frp_weight = 1;
- rpath.frp_sw_if_index = ~0;
- rpath.frp_proto = FIB_PROTOCOL_IP6;
- }
- else if (unformat (line_input, "via %U",
- unformat_ip4_address,
- &rpath.frp_addr.ip4))
- {
- rpath.frp_fib_index = 0;
- rpath.frp_weight = 1;
- rpath.frp_sw_if_index = ~0;
- rpath.frp_proto = FIB_PROTOCOL_IP4;
- }
- else if (unformat (line_input, "l2-only"))
- l2_only = 1;
- else
- return clib_error_return (0, "unknown input '%U'",
- format_unformat_error, line_input);
- }
-
- if (is_del)
- {
- vnet_mpls_tunnel_del(sw_if_index);
- }
- else
- {
- if (0 == vec_len(labels))
- return clib_error_return (0, "No Output Labels '%U'",
- format_unformat_error, line_input);
-
- vec_add1(rpaths, rpath);
- vnet_mpls_tunnel_add(rpaths, labels, l2_only, &sw_if_index);
- }
-
- vec_free(labels);
- vec_free(rpaths);
-
- return (NULL);
-}
-
-/*?
- * This command create a uni-directional MPLS tunnel
- *
- * @cliexpar
- * @cliexstart{create mpls tunnel}
- * create mpls tunnel via 10.0.0.1 GigEthernet0/8/0 out-label 33 out-label 34
- * @cliexend
- ?*/
-VLIB_CLI_COMMAND (create_mpls_tunnel_command, static) = {
- .path = "mpls tunnel",
- .short_help =
- "mpls tunnel via [addr] [interface] [out-labels]",
- .function = vnet_create_mpls_tunnel_command_fn,
-};
-
-static u8 *
-format_mpls_tunnel (u8 * s, va_list * args)
-{
- mpls_tunnel_t *mt = va_arg (*args, mpls_tunnel_t *);
- int ii;
-
- s = format(s, "mpls_tunnel%d: sw_if_index:%d hw_if_index:%d",
- mt - mpls_tunnel_pool,
- mt->mt_sw_if_index,
- mt->mt_hw_if_index);
- s = format(s, "\n label-stack:\n ");
- for (ii = 0; ii < vec_len(mt->mt_label_stack); ii++)
- {
- s = format(s, "%d, ", mt->mt_label_stack[ii]);
- }
- s = format(s, "\n via:\n");
- s = fib_path_list_format(mt->mt_path_list, s);
- s = format(s, "\n");
-
- return (s);
-}
-
-static clib_error_t *
-show_mpls_tunnel_command_fn (vlib_main_t * vm,
- unformat_input_t * input,
- vlib_cli_command_t * cmd)
-{
- mpls_tunnel_t * mt;
- u32 mti = ~0;
-
- if (pool_elts (mpls_tunnel_pool) == 0)
- vlib_cli_output (vm, "No MPLS tunnels configured...");
-
- while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
- {
- if (unformat (input, "%d", &mti))
- ;
- else
- break;
- }
-
- if (~0 == mti)
- {
- pool_foreach (mt, mpls_tunnel_pool,
- ({
- vlib_cli_output (vm, "[@%d] %U",
- mt - mpls_tunnel_pool,
- format_mpls_tunnel, mt);
- }));
- }
- else
- {
- if (pool_is_free_index(mpls_tunnel_pool, mti))
- return clib_error_return (0, "Not atunnel index %d", mti);
-
- mt = pool_elt_at_index(mpls_tunnel_pool, mti);
-
- vlib_cli_output (vm, "[@%d] %U",
- mt - mpls_tunnel_pool,
- format_mpls_tunnel, mt);
- }
-
- return 0;
-}
-
-/*?
- * This command to show MPLS tunnels
- *
- * @cliexpar
- * @cliexstart{sh mpls tunnel 2}
- * [@2] mpls_tunnel2: sw_if_index:5 hw_if_index:5
- * label-stack:
- * 3,
- * via:
- * index:26 locks:1 proto:ipv4 uPRF-list:26 len:1 itfs:[2, ]
- * index:26 pl-index:26 ipv4 weight=1 attached-nexthop: oper-flags:resolved,
- * 10.0.0.2 loop0
- * [@0]: ipv4 via 10.0.0.2 loop0: IP4: de:ad:00:00:00:00 -> 00:00:11:aa:bb:cc
- * @cliexend
- ?*/
-VLIB_CLI_COMMAND (show_mpls_tunnel_command, static) = {
- .path = "show mpls tunnel",
- .function = show_mpls_tunnel_command_fn,
-};
-
-static mpls_tunnel_t *
-mpls_tunnel_from_fib_node (fib_node_t *node)
-{
-#if (CLIB_DEBUG > 0)
- ASSERT(FIB_NODE_TYPE_MPLS_TUNNEL == node->fn_type);
-#endif
- return ((mpls_tunnel_t*) (((char*)node) -
- STRUCT_OFFSET_OF(mpls_tunnel_t, mt_node)));
-}
-
-/**
- * Function definition to backwalk a FIB node
- */
-static fib_node_back_walk_rc_t
-mpls_tunnel_back_walk (fib_node_t *node,
- fib_node_back_walk_ctx_t *ctx)
-{
- mpls_tunnel_restack(mpls_tunnel_from_fib_node(node));
-
- return (FIB_NODE_BACK_WALK_CONTINUE);
-}
-
-/**
- * Function definition to get a FIB node from its index
- */
-static fib_node_t*
-mpls_tunnel_fib_node_get (fib_node_index_t index)
-{
- mpls_tunnel_t * mt;
-
- mt = pool_elt_at_index(mpls_tunnel_pool, index);
-
- return (&mt->mt_node);
-}
-
-/**
- * Function definition to inform the FIB node that its last lock has gone.
- */
-static void
-mpls_tunnel_last_lock_gone (fib_node_t *node)
-{
- /*
- * The MPLS MPLS tunnel is a root of the graph. As such
- * it never has children and thus is never locked.
- */
- ASSERT(0);
-}
-
-/*
- * Virtual function table registered by MPLS MPLS tunnels
- * for participation in the FIB object graph.
- */
-const static fib_node_vft_t mpls_vft = {
- .fnv_get = mpls_tunnel_fib_node_get,
- .fnv_last_lock = mpls_tunnel_last_lock_gone,
- .fnv_back_walk = mpls_tunnel_back_walk,
-};
-
-static clib_error_t *
-mpls_tunnel_init (vlib_main_t *vm)
-{
- fib_node_register_type(FIB_NODE_TYPE_MPLS_TUNNEL, &mpls_vft);
-
- return 0;
-}
-VLIB_INIT_FUNCTION(mpls_tunnel_init);