From 7cd468a3d7dee7d6c92f69a0bb7061ae208ec727 Mon Sep 17 00:00:00 2001 From: Damjan Marion Date: Mon, 19 Dec 2016 23:05:39 +0100 Subject: Reorganize source tree to use single autotools instance Change-Id: I7b51f88292e057c6443b12224486f2d0c9f8ae23 Signed-off-by: Damjan Marion --- src/vnet/mpls/mpls_tunnel.c | 787 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 787 insertions(+) create mode 100644 src/vnet/mpls/mpls_tunnel.c (limited to 'src/vnet/mpls/mpls_tunnel.c') diff --git a/src/vnet/mpls/mpls_tunnel.c b/src/vnet/mpls/mpls_tunnel.c new file mode 100644 index 00000000..8d1e30a3 --- /dev/null +++ b/src/vnet/mpls/mpls_tunnel.c @@ -0,0 +1,787 @@ +/* + * 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 +#include +#include +#include +#include +#include + +/** + * @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); -- cgit 1.2.3-korg