vcl: add read/write udp support - vpp - Vector Packet Processing

diff options

author	Florin Coras <fcoras@cisco.com>	2018-07-27 05:45:06 -0700
committer	Dave Barach <openvpp@barachs.net>	2018-07-31 11:36:54 +0000
commit	460dce6e2d017cc7b2151fd0fa61d464570489d7 (patch)
tree	19e944702f8b7fcb659a8166f50a03ee5eba9a7a /src/vnet/lisp-gpe/dir.dox
parent	e939bf1b508e1fae6929dd8cf0f3effdc2c12549 (diff)

vcl: add read/write udp support

Change-Id: Ie6171c12055cde6915856de340839f5da1b1b1da Signed-off-by: Florin Coras <fcoras@cisco.com>

Diffstat (limited to 'src/vnet/lisp-gpe/dir.dox')

0 files changed, 0 insertions, 0 deletions

/* * gre_interface.c: gre interfaces * * 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/gre/gre.h> #include <vnet/ip/format.h> #include <vnet/fib/ip4_fib.h> #include <vnet/fib/ip6_fib.h> #include <vnet/adj/adj_midchain.h> #include <vnet/adj/adj_nbr.h> #include <vnet/mpls/mpls.h> #include <vnet/l2/l2_input.h> #include <vnet/teib/teib.h> u8 * format_gre_tunnel_type (u8 * s, va_list * args) { gre_tunnel_type_t type = va_arg (*args, int); switch (type) { #define _(n, v) case GRE_TUNNEL_TYPE_##n: \ s = format (s, "%s", v); \ break; foreach_gre_tunnel_type #undef _ } return (s); } static u8 * format_gre_tunnel (u8 * s, va_list * args) { gre_tunnel_t *t = va_arg (*args, gre_tunnel_t *); s = format (s, "[%d] instance %d src %U dst %U fib-idx %d sw-if-idx %d ", t->dev_instance, t->user_instance, format_ip46_address, &t->tunnel_src, IP46_TYPE_ANY, format_ip46_address, &t->tunnel_dst.fp_addr, IP46_TYPE_ANY, t->outer_fib_index, t->sw_if_index); s = format (s, "payload %U ", format_gre_tunnel_type, t->type); s = format (s, "%U ", format_tunnel_mode, t->mode); if (t->type == GRE_TUNNEL_TYPE_ERSPAN) s = format (s, "session %d ", t->session_id); if (t->type != GRE_TUNNEL_TYPE_L3) s = format (s, "l2-adj-idx %d ", t->l2_adj_index); return s; } static gre_tunnel_t * gre_tunnel_db_find (const vnet_gre_tunnel_add_del_args_t * a, u32 outer_fib_index, gre_tunnel_key_t * key) { gre_main_t *gm = &gre_main; uword *p; if (!a->is_ipv6) { gre_mk_key4 (a->src.ip4, a->dst.ip4, outer_fib_index, a->type, a->mode, a->session_id, &key->gtk_v4); p = hash_get_mem (gm->tunnel_by_key4, &key->gtk_v4); } else { gre_mk_key6 (&a->src.ip6, &a->dst.ip6, outer_fib_index, a->type, a->mode, a->session_id, &key->gtk_v6); p = hash_get_mem (gm->tunnel_by_key6, &key->gtk_v6); } if (NULL == p) return (NULL); return (pool_elt_at_index (gm->tunnels, p[0])); } static void gre_tunnel_db_add (gre_tunnel_t * t, gre_tunnel_key_t * key) { gre_main_t *gm = &gre_main; if (t->tunnel_dst.fp_proto == FIB_PROTOCOL_IP6) { hash_set_mem_alloc (&gm->tunnel_by_key6, &key->gtk_v6, t->dev_instance); } else { hash_set_mem_alloc (&gm->tunnel_by_key4, &key->gtk_v4, t->dev_instance); } } static void gre_tunnel_db_remove (gre_tunnel_t * t, gre_tunnel_key_t * key) { gre_main_t *gm = &gre_main; if (t->tunnel_dst.fp_proto == FIB_PROTOCOL_IP6) { hash_unset_mem_free (&gm->tunnel_by_key6, &key->gtk_v6); } else { hash_unset_mem_free (&gm->tunnel_by_key4, &key->gtk_v4); } } /** * gre_tunnel_stack * * 'stack' (resolve the recursion for) the tunnel's midchain adjacency */ void gre_tunnel_stack (adj_index_t ai) { gre_main_t *gm = &gre_main; ip_adjacency_t *adj; gre_tunnel_t *gt; u32 sw_if_index; adj = adj_get (ai); sw_if_index = adj->rewrite_header.sw_if_index; if ((vec_len (gm->tunnel_index_by_sw_if_index) <= sw_if_index) || (~0 == gm->tunnel_index_by_sw_if_index[sw_if_index])) return; gt = pool_elt_at_index (gm->tunnels, gm->tunnel_index_by_sw_if_index[sw_if_index]); if ((vnet_hw_interface_get_flags (vnet_get_main (), gt->hw_if_index) & VNET_HW_INTERFACE_FLAG_LINK_UP) == 0) { adj_midchain_delegate_unstack (ai); } else { adj_midchain_delegate_stack (ai, gt->outer_fib_index, &gt->tunnel_dst); } } /** * @brief Call back when restacking all adjacencies on a GRE interface */ static adj_walk_rc_t gre_adj_walk_cb (adj_index_t ai, void *ctx) { gre_tunnel_stack (ai); return (ADJ_WALK_RC_CONTINUE); } static void gre_tunnel_restack (gre_tunnel_t * gt) { fib_protocol_t proto; /* * walk all the adjacencies on th GRE interface and restack them */ FOR_EACH_FIB_IP_PROTOCOL (proto) { adj_nbr_walk (gt->sw_if_index, proto, gre_adj_walk_cb, NULL); } } static void gre_teib_mk_key (const gre_tunnel_t * t, const teib_entry_t * ne, gre_tunnel_key_t * key) { const fib_prefix_t *nh; nh = teib_entry_get_nh (ne); /* construct the key using mode P2P so it can be found in the DP */ if (FIB_PROTOCOL_IP4 == nh->fp_proto) gre_mk_key4 (t->tunnel_src.ip4, nh->fp_addr.ip4, teib_entry_get_fib_index (ne), t->type, TUNNEL_MODE_P2P, 0, &key->gtk_v4); else gre_mk_key6 (&t->tunnel_src.ip6, &nh->fp_addr.ip6, teib_entry_get_fib_index (ne), t->type, TUNNEL_MODE_P2P, 0, &key->gtk_v6); } /** * An NHRP entry has been added */ static void gre_teib_entry_added (const teib_entry_t * ne) { gre_main_t *gm = &gre_main; const ip_address_t *nh; gre_tunnel_key_t key; gre_tunnel_t *t; u32 sw_if_index; u32 t_idx; sw_if_index = teib_entry_get_sw_if_index (ne); if (vec_len (gm->tunnel_index_by_sw_if_index) < sw_if_index) return; t_idx = gm->tunnel_index_by_sw_if_index[sw_if_index]; if (INDEX_INVALID == t_idx) return; /* entry has been added on an interface for which there is a GRE tunnel */ t = pool_elt_at_index (gm->tunnels, t_idx); if (t->mode != TUNNEL_MODE_MP) return; /* the next-hop (underlay) of the NHRP entry will form part of the key for * ingress lookup to match packets to this interface */ gre_teib_mk_key (t, ne, &key); gre_tunnel_db_add (t, &key); /* update the rewrites for each of the adjacencies for this peer (overlay) * using the next-hop (underlay) */ mgre_walk_ctx_t ctx = { .t = t, .ne = ne }; nh = teib_entry_get_peer (ne); adj_nbr_walk_nh (teib_entry_get_sw_if_index (ne), (AF_IP4 == ip_addr_version (nh) ? FIB_PROTOCOL_IP4 : FIB_PROTOCOL_IP6), &ip_addr_46 (nh), mgre_mk_complete_walk, &ctx); } static void gre_teib_entry_deleted (const teib_entry_t * ne) { gre_main_t *gm = &gre_main; const ip_address_t *nh; gre_tunnel_key_t key; gre_tunnel_t *t; u32 sw_if_index; u32 t_idx; sw_if_index = teib_entry_get_sw_if_index (ne); if (vec_len (gm->tunnel_index_by_sw_if_index) < sw_if_index) return; t_idx = gm->tunnel_index_by_sw_if_index[sw_if_index]; if (INDEX_INVALID == t_idx) return; t = pool_elt_at_index (gm->tunnels, t_idx); /* remove the next-hop as an ingress lookup key */ gre_teib_mk_key (t, ne, &key); gre_tunnel_db_remove (t, &key); nh = teib_entry_get_peer (ne); /* make all the adjacencies incomplete */ adj_nbr_walk_nh (teib_entry_get_sw_if_index (ne), (AF_IP4 == ip_addr_version (nh) ? FIB_PROTOCOL_IP4 : FIB_PROTOCOL_IP6), &ip_addr_46 (nh), mgre_mk_incomplete_walk, t); } static walk_rc_t gre_tunnel_delete_teib_walk (index_t nei, void *ctx) { gre_tunnel_t *t = ctx; gre_tunnel_key_t key; gre_teib_mk_key (t, teib_entry_get (nei), &key); gre_tunnel_db_remove (t, &key); return (WALK_CONTINUE); } static walk_rc_t gre_tunnel_add_teib_walk (index_t nei, void *ctx) { gre_tunnel_t *t = ctx; gre_tunnel_key_t key; gre_teib_mk_key (t, teib_entry_get (nei), &key); gre_tunnel_db_add (t, &key); return (WALK_CONTINUE); } static int vnet_gre_tunnel_add (vnet_gre_tunnel_add_del_args_t * a, u32 outer_fib_index, u32 * sw_if_indexp) { gre_main_t *gm = &gre_main; vnet_main_t *vnm = gm->vnet_main; ip4_main_t *im4 = &ip4_main; ip6_main_t *im6 = &ip6_main; gre_tunnel_t *t; vnet_hw_interface_t *hi; u32 hw_if_index, sw_if_index; clib_error_t *error; u8 is_ipv6 = a->is_ipv6; gre_tunnel_key_t key; t = gre_tunnel_db_find (a, outer_fib_index, &key); if (NULL != t) return VNET_API_ERROR_IF_ALREADY_EXISTS; pool_get_aligned (gm->tunnels, t, CLIB_CACHE_LINE_BYTES); clib_memset (t, 0, sizeof (*t)); /* Reconcile the real dev_instance and a possible requested instance */ u32 t_idx = t - gm->tunnels; /* tunnel index (or instance) */ u32 u_idx = a->instance; /* user specified instance */ if (u_idx == ~0) u_idx = t_idx; if (hash_get (gm->instance_used, u_idx)) { pool_put (gm->tunnels, t); return VNET_API_ERROR_INSTANCE_IN_USE; } hash_set (gm->instance_used, u_idx, 1); t->dev_instance = t_idx; /* actual */ t->user_instance = u_idx; /* name */ t->type = a->type; t->mode = a->mode; t->flags = a->flags; if (t->type == GRE_TUNNEL_TYPE_ERSPAN) t->session_id = a->session_id; if (t->type == GRE_TUNNEL_TYPE_L3) { if (t->mode == TUNNEL_MODE_P2P) hw_if_index = vnet_register_interface (vnm, gre_device_class.index, t_idx, gre_hw_interface_class.index, t_idx); else hw_if_index = vnet_register_interface (vnm, gre_device_class.index, t_idx, mgre_hw_interface_class.index, t_idx); } else { /* Default MAC address (d00b:eed0:0000 + sw_if_index) */ u8 address[6] = { 0xd0, 0x0b, 0xee, 0xd0, (u8) (t_idx >> 8), (u8) t_idx }; error = ethernet_register_interface (vnm, gre_device_class.index, t_idx, address, &hw_if_index, 0); if (error) { clib_error_report (error); return VNET_API_ERROR_INVALID_REGISTRATION; } } /* Set GRE tunnel interface output node (not used for L3 payload) */ if (GRE_TUNNEL_TYPE_ERSPAN == t->type) vnet_set_interface_output_node (vnm, hw_if_index, gre_erspan_encap_node.index); else vnet_set_interface_output_node (vnm, hw_if_index, gre_teb_encap_node.index); hi = vnet_get_hw_interface (vnm, hw_if_index); sw_if_index = hi->sw_if_index; t->hw_if_index = hw_if_index; t->outer_fib_index = outer_fib_index; t->sw_if_index = sw_if_index; t->l2_adj_index = ADJ_INDEX_INVALID; vec_validate_init_empty (gm->tunnel_index_by_sw_if_index, sw_if_index, ~0); gm->tunnel_index_by_sw_if_index[sw_if_index] = t_idx; if (!is_ipv6) { vec_validate (im4->fib_index_by_sw_if_index, sw_if_index); hi->min_packet_bytes = 64 + sizeof (gre_header_t) + sizeof (ip4_header_t); } else { vec_validate (im6->fib_index_by_sw_if_index, sw_if_index); hi->min_packet_bytes = 64 + sizeof (gre_header_t) + sizeof (ip6_header_t); } /* Standard default gre MTU. */ vnet_sw_interface_set_mtu (vnm, sw_if_index, 9000); /* * source the FIB entry for the tunnel's destination * and become a child thereof. The tunnel will then get poked * when the forwarding for the entry updates, and the tunnel can * re-stack accordingly */ clib_memcpy (&t->tunnel_src, &a->src, sizeof (t->tunnel_src)); t->tunnel_dst.fp_len = !is_ipv6 ? 32 : 128; t->tunnel_dst.fp_proto = !is_ipv6 ? FIB_PROTOCOL_IP4 : FIB_PROTOCOL_IP6; t->tunnel_dst.fp_addr = a->dst; gre_tunnel_db_add (t, &key); if (t->mode == TUNNEL_MODE_MP) teib_walk_itf (t->sw_if_index, gre_tunnel_add_teib_walk, t); if (t->type == GRE_TUNNEL_TYPE_ERSPAN) { gre_sn_key_t skey; gre_sn_t *gre_sn; gre_mk_sn_key (t, &skey); gre_sn = (gre_sn_t *) hash_get_mem (gm->seq_num_by_key, &skey); if (gre_sn != NULL) { gre_sn->ref_count++; t->gre_sn = gre_sn; } else { gre_sn = clib_mem_alloc (sizeof (gre_sn_t)); gre_sn->seq_num = 0; gre_sn->ref_count = 1; t->gre_sn = gre_sn; hash_set_mem_alloc (&gm->seq_num_by_key, &skey, (uword) gre_sn); } } if (t->type != GRE_TUNNEL_TYPE_L3) { t->l2_adj_index = adj_nbr_add_or_lock (t->tunnel_dst.fp_proto, VNET_LINK_ETHERNET, &zero_addr, sw_if_index); gre_update_adj (vnm, t->sw_if_index, t->l2_adj_index); } if (sw_if_indexp) *sw_if_indexp = sw_if_index; /* register gre46-input nodes */ ip4_register_protocol (IP_PROTOCOL_GRE, gre4_input_node.index); ip6_register_protocol (IP_PROTOCOL_GRE, gre6_input_node.index); return 0; } static int vnet_gre_tunnel_delete (vnet_gre_tunnel_add_del_args_t * a, u32 outer_fib_index, u32 * sw_if_indexp) { gre_main_t *gm = &gre_main; vnet_main_t *vnm = gm->vnet_main; gre_tunnel_t *t; gre_tunnel_key_t key; u32 sw_if_index; t = gre_tunnel_db_find (a, outer_fib_index, &key); if (NULL == t) return VNET_API_ERROR_NO_SUCH_ENTRY; if (t->mode == TUNNEL_MODE_MP) teib_walk_itf (t->sw_if_index, gre_tunnel_delete_teib_walk, t); sw_if_index = t->sw_if_index; vnet_sw_interface_set_flags (vnm, sw_if_index, 0 /* down */ ); /* make sure tunnel is removed from l2 bd or xconnect */ set_int_l2_mode (gm->vlib_main, vnm, MODE_L3, sw_if_index, 0, L2_BD_PORT_TYPE_NORMAL, 0, 0); gm->tunnel_index_by_sw_if_index[sw_if_index] = ~0; if (t->type == GRE_TUNNEL_TYPE_L3) vnet_delete_hw_interface (vnm, t->hw_if_index); else ethernet_delete_interface (vnm, t->hw_if_index); if (t->l2_adj_index != ADJ_INDEX_INVALID) { adj_midchain_delegate_unstack (t->l2_adj_index); adj_unlock (t->l2_adj_index); } ASSERT ((t->type != GRE_TUNNEL_TYPE_ERSPAN) || (t->gre_sn != NULL)); if ((t->type == GRE_TUNNEL_TYPE_ERSPAN) && (t->gre_sn->ref_count-- == 1)) { gre_sn_key_t skey; gre_mk_sn_key (t, &skey); hash_unset_mem_free (&gm->seq_num_by_key, &skey); clib_mem_free (t->gre_sn); } hash_unset (gm->instance_used, t->user_instance); gre_tunnel_db_remove (t, &key); pool_put (gm->tunnels, t); if (sw_if_indexp) *sw_if_indexp = sw_if_index; return 0; } int vnet_gre_tunnel_add_del (vnet_gre_tunnel_add_del_args_t * a, u32 * sw_if_indexp) { u32 outer_fib_index; if (!a->is_ipv6) outer_fib_index = ip4_fib_index_from_table_id (a->outer_table_id); else outer_fib_index = ip6_fib_index_from_table_id (a->outer_table_id); if (~0 == outer_fib_index) return VNET_API_ERROR_NO_SUCH_FIB; if (a->session_id > GTK_SESSION_ID_MAX) return VNET_API_ERROR_INVALID_SESSION_ID; if (a->mode == TUNNEL_MODE_MP && !ip46_address_is_zero (&a->dst)) return (VNET_API_ERROR_INVALID_DST_ADDRESS); if (a->is_add) return (vnet_gre_tunnel_add (a, outer_fib_index, sw_if_indexp)); else return (vnet_gre_tunnel_delete (a, outer_fib_index, sw_if_indexp)); } clib_error_t * gre_interface_admin_up_down (vnet_main_t * vnm, u32 hw_if_index, u32 flags) { gre_main_t *gm = &gre_main; vnet_hw_interface_t *hi; gre_tunnel_t *t; u32 ti; hi = vnet_get_hw_interface (vnm, hw_if_index); if (NULL == gm->tunnel_index_by_sw_if_index || hi->sw_if_index >= vec_len (gm->tunnel_index_by_sw_if_index)) return (NULL); ti = gm->tunnel_index_by_sw_if_index[hi->sw_if_index]; if (~0 == ti) /* not one of ours */ return (NULL); t = pool_elt_at_index (gm->tunnels, ti); 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 */ ); gre_tunnel_restack (t); return /* no error */ 0; } static clib_error_t * create_gre_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_gre_tunnel_add_del_args_t _a, *a = &_a; ip46_address_t src = ip46_address_initializer, dst = ip46_address_initializer; u32 instance = ~0; u32 outer_table_id = 0; gre_tunnel_type_t t_type = GRE_TUNNEL_TYPE_L3; tunnel_mode_t t_mode = TUNNEL_MODE_P2P; u32 session_id = 0; int rv; u8 is_add = 1; u32 sw_if_index; clib_error_t *error = NULL; /* 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")) is_add = 0; else if (unformat (line_input, "instance %d", &instance)) ; else if (unformat (line_input, "src %U", unformat_ip46_address, &src)) ; else if (unformat (line_input, "dst %U", unformat_ip46_address, &dst)) ; else if (unformat (line_input, "outer-table-id %d", &outer_table_id)) ; else if (unformat (line_input, "multipoint")) t_mode = TUNNEL_MODE_MP; else if (unformat (line_input, "teb")) t_type = GRE_TUNNEL_TYPE_TEB; else if (unformat (line_input, "erspan %d", &session_id)) t_type = GRE_TUNNEL_TYPE_ERSPAN; else { error = clib_error_return (0, "unknown input `%U'", format_unformat_error, line_input); goto done; } } if (ip46_address_is_equal (&src, &dst)) { error = clib_error_return (0, "src and dst are identical"); goto done; } if (t_mode != TUNNEL_MODE_MP && ip46_address_is_zero (&dst)) { error = clib_error_return (0, "destination address not specified"); goto done; } if (ip46_address_is_zero (&src)) { error = clib_error_return (0, "source address not specified"); goto done; } if (ip46_address_is_ip4 (&src) != ip46_address_is_ip4 (&dst)) { error = clib_error_return (0, "src and dst address must be the same AF"); goto done; } clib_memset (a, 0, sizeof (*a)); a->is_add = is_add; a->outer_table_id = outer_table_id; a->type = t_type; a->mode = t_mode; a->session_id = session_id; a->is_ipv6 = !ip46_address_is_ip4 (&src); a->instance = instance; clib_memcpy (&a->src, &src, sizeof (a->src)); clib_memcpy (&a->dst, &dst, sizeof (a->dst)); rv = vnet_gre_tunnel_add_del (a, &sw_if_index); switch (rv) { case 0: vlib_cli_output (vm, "%U\n", format_vnet_sw_if_index_name, vnet_get_main (), sw_if_index); break; case VNET_API_ERROR_IF_ALREADY_EXISTS: error = clib_error_return (0, "GRE tunnel already exists..."); goto done; case VNET_API_ERROR_NO_SUCH_FIB: error = clib_error_return (0, "outer table ID %d doesn't exist\n", outer_table_id); goto done; case VNET_API_ERROR_NO_SUCH_ENTRY: error = clib_error_return (0, "GRE tunnel doesn't exist"); goto done; case VNET_API_ERROR_INVALID_SESSION_ID: error = clib_error_return (0, "session ID %d out of range\n", session_id); goto done; case VNET_API_ERROR_INSTANCE_IN_USE: error = clib_error_return (0, "Instance is in use"); goto done; default: error = clib_error_return (0, "vnet_gre_tunnel_add_del returned %d", rv); goto done; } done: unformat_free (line_input); return error; } /* *INDENT-OFF* */ VLIB_CLI_COMMAND (create_gre_tunnel_command, static) = { .path = "create gre tunnel", .short_help = "create gre tunnel src <addr> dst <addr> [instance <n>] " "[outer-fib-id <fib>] [teb | erspan <session-id>] [del]", .function = create_gre_tunnel_command_fn, }; /* *INDENT-ON* */ static clib_error_t * show_gre_tunnel_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { gre_main_t *gm = &gre_main; gre_tunnel_t *t; u32 ti = ~0; if (pool_elts (gm->tunnels) == 0) vlib_cli_output (vm, "No GRE tunnels configured..."); while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) { if (unformat (input, "%d", &ti)) ; else break; } if (~0 == ti) { /* *INDENT-OFF* */ pool_foreach (t, gm->tunnels, ({ vlib_cli_output (vm, "%U", format_gre_tunnel, t); })); /* *INDENT-ON* */ } else { t = pool_elt_at_index (gm->tunnels, ti); vlib_cli_output (vm, "%U", format_gre_tunnel, t); } return 0; } /* *INDENT-OFF* */ VLIB_CLI_COMMAND (show_gre_tunnel_command, static) = { .path = "show gre tunnel", .function = show_gre_tunnel_command_fn, }; /* *INDENT-ON* */ const static teib_vft_t gre_teib_vft = { .nv_added = gre_teib_entry_added, .nv_deleted = gre_teib_entry_deleted, }; /* force inclusion from application's main.c */ clib_error_t * gre_interface_init (vlib_main_t * vm) { teib_register (&gre_teib_vft); return (NULL); } VLIB_INIT_FUNCTION (gre_interface_init); /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */


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