4 * Copyright (c) 2018 Cisco and/or its affiliates.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or aipiped to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
19 #include <vnet/adj/adj_midchain.h>
20 #include <vnet/ipip/ipip.h>
21 #include <vnet/vnet.h>
22 #include <vnet/adj/adj_nbr.h>
23 #include <vnet/adj/adj_midchain.h>
24 #include <vnet/fib/ip4_fib.h>
25 #include <vnet/fib/ip6_fib.h>
26 #include <vnet/ip/format.h>
27 #include <vnet/ipip/ipip.h>
28 #include <vnet/teib/teib.h>
29 #include <vnet/tunnel/tunnel_dp.h>
31 ipip_main_t ipip_main;
33 /* Packet trace structure */
43 format_ipip_tx_trace (u8 * s, va_list * args)
45 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
46 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
47 ipip_tx_trace_t *t = va_arg (*args, ipip_tx_trace_t *);
50 format (s, "IPIP: tunnel %d len %d src %U dst %U", t->tunnel_id,
51 t->length, format_ip46_address, &t->src, IP46_TYPE_ANY,
52 format_ip46_address, &t->dst, IP46_TYPE_ANY);
57 ipip_build_rewrite (vnet_main_t * vnm, u32 sw_if_index,
58 vnet_link_t link_type, const void *dst_address)
60 const ip46_address_t *dst;
67 t = ipip_tunnel_db_find_by_sw_if_index (sw_if_index);
75 case IPIP_TRANSPORT_IP4:
76 vec_validate (rewrite, sizeof (*ip4) - 1);
77 ip4 = (ip4_header_t *) rewrite;
78 ip4->ip_version_and_header_length = 0x45;
80 /* fixup ip4 header length, protocol and checksum after-the-fact */
81 ip4->src_address.as_u32 = t->tunnel_src.ip4.as_u32;
82 ip4->dst_address.as_u32 = dst->ip4.as_u32;
83 if (!(t->flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP))
84 ip4_header_set_dscp (ip4, t->dscp);
85 if (t->flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_SET_DF)
86 ip4_header_set_df (ip4);
91 ip4->protocol = IP_PROTOCOL_IPV6;
94 ip4->protocol = IP_PROTOCOL_IP_IN_IP;
99 ip4->checksum = ip4_header_checksum (ip4);
102 case IPIP_TRANSPORT_IP6:
103 vec_validate (rewrite, sizeof (*ip6) - 1);
104 ip6 = (ip6_header_t *) rewrite;
105 ip6->ip_version_traffic_class_and_flow_label =
106 clib_host_to_net_u32 (6 << 28);
108 /* fixup ip6 header length and protocol after-the-fact */
109 ip6->src_address.as_u64[0] = t->tunnel_src.ip6.as_u64[0];
110 ip6->src_address.as_u64[1] = t->tunnel_src.ip6.as_u64[1];
111 ip6->dst_address.as_u64[0] = dst->ip6.as_u64[0];
112 ip6->dst_address.as_u64[1] = dst->ip6.as_u64[1];
113 if (!(t->flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP))
114 ip6_set_dscp_network_order (ip6, t->dscp);
119 ip6->protocol = IP_PROTOCOL_IPV6;
122 ip6->protocol = IP_PROTOCOL_IP_IN_IP;
133 ipip64_fixup (vlib_main_t * vm, const ip_adjacency_t * adj, vlib_buffer_t * b,
136 tunnel_encap_decap_flags_t flags;
139 flags = pointer_to_uword (data);
141 ip4 = vlib_buffer_get_current (b);
142 ip4->length = clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b));
143 tunnel_encap_fixup_6o4 (flags, ((ip6_header_t *) (ip4 + 1)), ip4);
145 ip4->checksum = ip4_header_checksum (ip4);
149 ipip44_fixup (vlib_main_t * vm, const ip_adjacency_t * adj, vlib_buffer_t * b,
152 tunnel_encap_decap_flags_t flags;
155 flags = pointer_to_uword (data);
157 ip4 = vlib_buffer_get_current (b);
158 ip4->length = clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b));
159 tunnel_encap_fixup_4o4 (flags, ip4 + 1, ip4);
161 ip4->checksum = ip4_header_checksum (ip4);
165 ipip46_fixup (vlib_main_t * vm, const ip_adjacency_t * adj, vlib_buffer_t * b,
168 tunnel_encap_decap_flags_t flags;
171 flags = pointer_to_uword (data);
173 /* Must set locally originated otherwise we're not allowed to
174 fragment the packet later */
175 b->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
177 ip6 = vlib_buffer_get_current (b);
178 ip6->payload_length =
179 clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b) -
181 tunnel_encap_fixup_4o6 (flags, ((ip4_header_t *) (ip6 + 1)), ip6);
185 ipip66_fixup (vlib_main_t * vm,
186 const ip_adjacency_t * adj, vlib_buffer_t * b, const void *data)
188 tunnel_encap_decap_flags_t flags;
191 flags = pointer_to_uword (data);
193 /* Must set locally originated otherwise we're not allowed to
194 fragment the packet later */
195 b->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
197 ip6 = vlib_buffer_get_current (b);
198 ip6->payload_length =
199 clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b) -
201 tunnel_encap_fixup_6o6 (flags, ip6 + 1, ip6);
205 ipip_tunnel_stack (adj_index_t ai)
212 sw_if_index = adj->rewrite_header.sw_if_index;
214 t = ipip_tunnel_db_find_by_sw_if_index (sw_if_index);
218 if ((vnet_hw_interface_get_flags (vnet_get_main (), t->hw_if_index) &
219 VNET_HW_INTERFACE_FLAG_LINK_UP) == 0)
221 adj_midchain_delegate_unstack (ai);
227 .fp_len = t->transport == IPIP_TRANSPORT_IP6 ? 128 : 32,
228 .fp_proto = (t->transport == IPIP_TRANSPORT_IP6 ?
231 .fp_addr = t->tunnel_dst
235 adj_midchain_delegate_stack (ai, t->fib_index, &dst);
240 ipip_adj_walk_cb (adj_index_t ai, void *ctx)
242 ipip_tunnel_stack (ai);
244 return (ADJ_WALK_RC_CONTINUE);
248 ipip_tunnel_restack (ipip_tunnel_t * gt)
250 fib_protocol_t proto;
253 * walk all the adjacencies on th IPIP interface and restack them
255 FOR_EACH_FIB_IP_PROTOCOL (proto)
257 adj_nbr_walk (gt->sw_if_index, proto, ipip_adj_walk_cb, NULL);
261 static adj_midchain_fixup_t
262 ipip_get_fixup (const ipip_tunnel_t * t, vnet_link_t lt, adj_flags_t * aflags)
264 if (t->transport == IPIP_TRANSPORT_IP6 && lt == VNET_LINK_IP6)
265 return (ipip66_fixup);
266 if (t->transport == IPIP_TRANSPORT_IP6 && lt == VNET_LINK_IP4)
267 return (ipip46_fixup);
268 if (t->transport == IPIP_TRANSPORT_IP4 && lt == VNET_LINK_IP6)
269 return (ipip64_fixup);
270 if (t->transport == IPIP_TRANSPORT_IP4 && lt == VNET_LINK_IP4)
272 *aflags = *aflags | ADJ_FLAG_MIDCHAIN_FIXUP_IP4O4_HDR;
273 return (ipip44_fixup);
277 return (ipip44_fixup);
281 ipip_update_adj (vnet_main_t * vnm, u32 sw_if_index, adj_index_t ai)
283 adj_midchain_fixup_t fixup;
287 t = ipip_tunnel_db_find_by_sw_if_index (sw_if_index);
291 af = ADJ_FLAG_MIDCHAIN_IP_STACK;
292 if (VNET_LINK_ETHERNET == adj_get_link_type (ai))
293 af |= ADJ_FLAG_MIDCHAIN_NO_COUNT;
295 fixup = ipip_get_fixup (t, adj_get_link_type (ai), &af);
296 adj_nbr_midchain_update_rewrite
298 uword_to_pointer (t->flags, void *), af,
299 ipip_build_rewrite (vnm, sw_if_index,
300 adj_get_link_type (ai), &t->tunnel_dst));
301 ipip_tunnel_stack (ai);
304 typedef struct mipip_walk_ctx_t_
306 const ipip_tunnel_t *t;
307 const teib_entry_t *ne;
311 mipip_mk_complete_walk (adj_index_t ai, void *data)
313 adj_midchain_fixup_t fixup;
314 mipip_walk_ctx_t *ctx = data;
318 fixup = ipip_get_fixup (ctx->t, adj_get_link_type (ai), &af);
320 adj_nbr_midchain_update_rewrite
322 uword_to_pointer (ctx->t->flags, void *),
323 ADJ_FLAG_MIDCHAIN_IP_STACK, ipip_build_rewrite (vnet_get_main (),
325 adj_get_link_type (ai),
327 (ctx->ne)->fp_addr));
329 teib_entry_adj_stack (ctx->ne, ai);
331 return (ADJ_WALK_RC_CONTINUE);
335 mipip_mk_incomplete_walk (adj_index_t ai, void *data)
337 adj_midchain_fixup_t fixup;
338 ipip_tunnel_t *t = data;
342 fixup = ipip_get_fixup (t, adj_get_link_type (ai), &af);
344 adj_nbr_midchain_update_rewrite (ai, fixup, NULL, ADJ_FLAG_NONE, NULL);
346 adj_midchain_delegate_unstack (ai);
348 return (ADJ_WALK_RC_CONTINUE);
352 mipip_update_adj (vnet_main_t * vnm, u32 sw_if_index, adj_index_t ai)
354 ipip_main_t *gm = &ipip_main;
355 adj_midchain_fixup_t fixup;
364 ti = gm->tunnel_index_by_sw_if_index[sw_if_index];
365 t = pool_elt_at_index (gm->tunnels, ti);
367 ne = teib_entry_find (sw_if_index, &adj->sub_type.nbr.next_hop);
371 // no TEIB entry to provide the next-hop
372 fixup = ipip_get_fixup (t, adj_get_link_type (ai), &af);
373 adj_nbr_midchain_update_rewrite
374 (ai, fixup, uword_to_pointer (t->flags, void *), ADJ_FLAG_NONE, NULL);
378 mipip_walk_ctx_t ctx = {
382 adj_nbr_walk_nh (sw_if_index,
384 &adj->sub_type.nbr.next_hop, mipip_mk_complete_walk, &ctx);
388 format_ipip_tunnel_name (u8 * s, va_list * args)
390 u32 dev_instance = va_arg (*args, u32);
391 ipip_main_t *gm = &ipip_main;
394 if (dev_instance >= vec_len (gm->tunnels))
395 return format (s, "<improperly-referenced>");
397 t = pool_elt_at_index (gm->tunnels, dev_instance);
398 return format (s, "ipip%d", t->user_instance);
402 format_ipip_device (u8 * s, va_list * args)
404 u32 dev_instance = va_arg (*args, u32);
405 CLIB_UNUSED (int verbose) = va_arg (*args, int);
407 s = format (s, "IPIP tunnel: id %d\n", dev_instance);
411 static clib_error_t *
412 ipip_interface_admin_up_down (vnet_main_t * vnm, u32 hw_if_index, u32 flags)
414 vnet_hw_interface_t *hi;
417 hi = vnet_get_hw_interface (vnm, hw_if_index);
419 t = ipip_tunnel_db_find_by_sw_if_index (hi->sw_if_index);
423 if (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
424 vnet_hw_interface_set_flags (vnm, hw_if_index,
425 VNET_HW_INTERFACE_FLAG_LINK_UP);
427 vnet_hw_interface_set_flags (vnm, hw_if_index, 0 /* down */ );
429 ipip_tunnel_restack (t);
431 return /* no error */ 0;
435 ipip_tunnel_desc (u32 sw_if_index,
436 ip46_address_t * src, ip46_address_t * dst, u8 * is_l2)
440 t = ipip_tunnel_db_find_by_sw_if_index (sw_if_index);
444 *src = t->tunnel_src;
445 *dst = t->tunnel_dst;
452 VNET_DEVICE_CLASS(ipip_device_class) = {
453 .name = "IPIP tunnel device",
454 .format_device_name = format_ipip_tunnel_name,
455 .format_device = format_ipip_device,
456 .format_tx_trace = format_ipip_tx_trace,
457 .admin_up_down_function = ipip_interface_admin_up_down,
458 .ip_tun_desc = ipip_tunnel_desc,
464 VNET_HW_INTERFACE_CLASS(ipip_hw_interface_class) = {
466 //.format_header = format_ipip_header_with_length,
467 //.unformat_header = unformat_ipip_header,
468 .build_rewrite = ipip_build_rewrite,
469 .update_adjacency = ipip_update_adj,
470 .flags = VNET_HW_INTERFACE_CLASS_FLAG_P2P,
473 VNET_HW_INTERFACE_CLASS(mipip_hw_interface_class) = {
475 //.format_header = format_ipip_header_with_length,
476 //.unformat_header = unformat_ipip_header,
477 .build_rewrite = ipip_build_rewrite,
478 .update_adjacency = mipip_update_adj,
479 .flags = VNET_HW_INTERFACE_CLASS_FLAG_NBMA,
484 ipip_tunnel_db_find (const ipip_tunnel_key_t * key)
486 ipip_main_t *gm = &ipip_main;
489 p = hash_get_mem (gm->tunnel_by_key, key);
492 return (pool_elt_at_index (gm->tunnels, p[0]));
496 ipip_tunnel_db_find_by_sw_if_index (u32 sw_if_index)
498 ipip_main_t *gm = &ipip_main;
499 if (vec_len (gm->tunnel_index_by_sw_if_index) <= sw_if_index)
501 u32 ti = gm->tunnel_index_by_sw_if_index[sw_if_index];
504 return pool_elt_at_index (gm->tunnels, ti);
508 ipip_tunnel_db_add (ipip_tunnel_t * t, const ipip_tunnel_key_t * key)
510 ipip_main_t *gm = &ipip_main;
512 hash_set_mem_alloc (&gm->tunnel_by_key, key, t->dev_instance);
516 ipip_tunnel_db_remove (ipip_tunnel_t * t, const ipip_tunnel_key_t * key)
518 ipip_main_t *gm = &ipip_main;
520 hash_unset_mem_free (&gm->tunnel_by_key, key);
524 ipip_mk_key_i (ipip_transport_t transport,
526 const ip46_address_t * src,
527 const ip46_address_t * dst,
528 u32 fib_index, ipip_tunnel_key_t * key)
530 key->transport = transport;
534 key->fib_index = fib_index;
539 ipip_mk_key (const ipip_tunnel_t * t, ipip_tunnel_key_t * key)
541 ipip_mk_key_i (t->transport, t->mode,
542 &t->tunnel_src, &t->tunnel_dst, t->fib_index, key);
546 ipip_teib_mk_key (const ipip_tunnel_t * t,
547 const teib_entry_t * ne, ipip_tunnel_key_t * key)
549 const fib_prefix_t *nh;
551 nh = teib_entry_get_nh (ne);
553 /* construct the key using mode P2P so it can be found in the DP */
554 ipip_mk_key_i (t->transport, IPIP_MODE_P2P,
555 &t->tunnel_src, &nh->fp_addr,
556 teib_entry_get_fib_index (ne), key);
560 ipip_teib_entry_added (const teib_entry_t * ne)
562 ipip_main_t *gm = &ipip_main;
563 const ip46_address_t *nh;
564 ipip_tunnel_key_t key;
569 sw_if_index = teib_entry_get_sw_if_index (ne);
570 if (vec_len (gm->tunnel_index_by_sw_if_index) < sw_if_index)
573 t_idx = gm->tunnel_index_by_sw_if_index[sw_if_index];
575 if (INDEX_INVALID == t_idx)
578 t = pool_elt_at_index (gm->tunnels, t_idx);
580 ipip_teib_mk_key (t, ne, &key);
581 ipip_tunnel_db_add (t, &key);
583 // update the rewrites for each of the adjacencies for this next-hop
584 mipip_walk_ctx_t ctx = {
588 nh = teib_entry_get_peer (ne);
589 adj_nbr_walk_nh (teib_entry_get_sw_if_index (ne),
590 (ip46_address_is_ip4 (nh) ?
592 FIB_PROTOCOL_IP6), nh, mipip_mk_complete_walk, &ctx);
596 ipip_teib_entry_deleted (const teib_entry_t * ne)
598 ipip_main_t *gm = &ipip_main;
599 const ip46_address_t *nh;
600 ipip_tunnel_key_t key;
605 sw_if_index = teib_entry_get_sw_if_index (ne);
606 if (vec_len (gm->tunnel_index_by_sw_if_index) < sw_if_index)
609 t_idx = gm->tunnel_index_by_sw_if_index[sw_if_index];
611 if (INDEX_INVALID == t_idx)
614 t = pool_elt_at_index (gm->tunnels, t_idx);
616 ipip_teib_mk_key (t, ne, &key);
617 ipip_tunnel_db_remove (t, &key);
619 nh = teib_entry_get_peer (ne);
621 /* make all the adjacencies incomplete */
622 adj_nbr_walk_nh (teib_entry_get_sw_if_index (ne),
623 (ip46_address_is_ip4 (nh) ?
625 FIB_PROTOCOL_IP6), nh, mipip_mk_incomplete_walk, t);
629 ipip_tunnel_delete_teib_walk (index_t nei, void *ctx)
631 ipip_tunnel_t *t = ctx;
632 ipip_tunnel_key_t key;
634 ipip_teib_mk_key (t, teib_entry_get (nei), &key);
635 ipip_tunnel_db_remove (t, &key);
637 return (WALK_CONTINUE);
641 ipip_tunnel_add_teib_walk (index_t nei, void *ctx)
643 ipip_tunnel_t *t = ctx;
644 ipip_tunnel_key_t key;
646 ipip_teib_mk_key (t, teib_entry_get (nei), &key);
647 ipip_tunnel_db_add (t, &key);
649 return (WALK_CONTINUE);
653 ipip_add_tunnel (ipip_transport_t transport,
654 u32 instance, ip46_address_t * src, ip46_address_t * dst,
655 u32 fib_index, tunnel_encap_decap_flags_t flags,
656 ip_dscp_t dscp, tunnel_mode_t tmode, u32 * sw_if_indexp)
658 ipip_main_t *gm = &ipip_main;
659 vnet_main_t *vnm = gm->vnet_main;
660 ip4_main_t *im4 = &ip4_main;
661 ip6_main_t *im6 = &ip6_main;
663 vnet_hw_interface_t *hi;
664 u32 hw_if_index, sw_if_index;
665 ipip_tunnel_key_t key;
668 if (tmode == TUNNEL_MODE_MP && !ip46_address_is_zero (dst))
669 return (VNET_API_ERROR_INVALID_DST_ADDRESS);
671 mode = (tmode == TUNNEL_MODE_P2P ? IPIP_MODE_P2P : IPIP_MODE_P2MP);
672 ipip_mk_key_i (transport, mode, src, dst, fib_index, &key);
674 t = ipip_tunnel_db_find (&key);
678 sw_if_indexp[0] = t->sw_if_index;
679 return VNET_API_ERROR_IF_ALREADY_EXISTS;
682 pool_get_aligned (gm->tunnels, t, CLIB_CACHE_LINE_BYTES);
683 clib_memset (t, 0, sizeof (*t));
685 /* Reconcile the real dev_instance and a possible requested instance */
686 u32 t_idx = t - gm->tunnels; /* tunnel index (or instance) */
687 u32 u_idx = instance; /* user specified instance */
690 if (hash_get (gm->instance_used, u_idx))
692 pool_put (gm->tunnels, t);
693 return VNET_API_ERROR_INSTANCE_IN_USE;
695 hash_set (gm->instance_used, u_idx, 1);
697 t->dev_instance = t_idx; /* actual */
698 t->user_instance = u_idx; /* name */
700 hw_if_index = vnet_register_interface (vnm, ipip_device_class.index, t_idx,
701 (mode == IPIP_MODE_P2P ?
702 ipip_hw_interface_class.index :
703 mipip_hw_interface_class.index),
706 hi = vnet_get_hw_interface (vnm, hw_if_index);
707 sw_if_index = hi->sw_if_index;
710 t->hw_if_index = hw_if_index;
711 t->fib_index = fib_index;
712 t->sw_if_index = sw_if_index;
715 t->transport = transport;
717 vec_validate_init_empty (gm->tunnel_index_by_sw_if_index, sw_if_index, ~0);
718 gm->tunnel_index_by_sw_if_index[sw_if_index] = t_idx;
720 if (t->transport == IPIP_TRANSPORT_IP4)
722 vec_validate (im4->fib_index_by_sw_if_index, sw_if_index);
723 hi->min_packet_bytes = 64 + sizeof (ip4_header_t);
727 vec_validate (im6->fib_index_by_sw_if_index, sw_if_index);
728 hi->min_packet_bytes = 64 + sizeof (ip6_header_t);
731 /* Standard default ipip MTU. */
732 vnet_sw_interface_set_mtu (vnm, sw_if_index, 9000);
734 t->tunnel_src = *src;
735 t->tunnel_dst = *dst;
737 ipip_tunnel_db_add (t, &key);
739 if (t->mode == IPIP_MODE_P2MP)
740 teib_walk_itf (t->sw_if_index, ipip_tunnel_add_teib_walk, t);
743 *sw_if_indexp = sw_if_index;
745 if (t->transport == IPIP_TRANSPORT_IP6 && !gm->ip6_protocol_registered)
747 ip6_register_protocol (IP_PROTOCOL_IP_IN_IP, ipip6_input_node.index);
748 ip6_register_protocol (IP_PROTOCOL_IPV6, ipip6_input_node.index);
749 gm->ip6_protocol_registered = true;
751 else if (t->transport == IPIP_TRANSPORT_IP4 && !gm->ip4_protocol_registered)
753 ip4_register_protocol (IP_PROTOCOL_IP_IN_IP, ipip4_input_node.index);
754 ip4_register_protocol (IP_PROTOCOL_IPV6, ipip4_input_node.index);
755 gm->ip4_protocol_registered = true;
761 ipip_del_tunnel (u32 sw_if_index)
763 ipip_main_t *gm = &ipip_main;
764 vnet_main_t *vnm = gm->vnet_main;
766 ipip_tunnel_key_t key;
768 t = ipip_tunnel_db_find_by_sw_if_index (sw_if_index);
770 return VNET_API_ERROR_NO_SUCH_ENTRY;
772 if (t->mode == IPIP_MODE_P2MP)
773 teib_walk_itf (t->sw_if_index, ipip_tunnel_delete_teib_walk, t);
775 vnet_sw_interface_set_flags (vnm, sw_if_index, 0 /* down */ );
776 gm->tunnel_index_by_sw_if_index[sw_if_index] = ~0;
777 vnet_delete_hw_interface (vnm, t->hw_if_index);
778 hash_unset (gm->instance_used, t->user_instance);
780 ipip_mk_key (t, &key);
781 ipip_tunnel_db_remove (t, &key);
782 pool_put (gm->tunnels, t);
787 const static teib_vft_t ipip_teib_vft = {
788 .nv_added = ipip_teib_entry_added,
789 .nv_deleted = ipip_teib_entry_deleted,
792 static clib_error_t *
793 ipip_init (vlib_main_t * vm)
795 ipip_main_t *gm = &ipip_main;
797 clib_memset (gm, 0, sizeof (gm[0]));
799 gm->vnet_main = vnet_get_main ();
801 hash_create_mem (0, sizeof (ipip_tunnel_key_t), sizeof (uword));
803 teib_register (&ipip_teib_vft);
808 VLIB_INIT_FUNCTION (ipip_init);
811 * fd.io coding-style-patch-verification: ON
814 * eval: (c-set-style "gnu")