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;
97 ip4->protocol = IP_PROTOCOL_MPLS_IN_IP;
102 ip4->checksum = ip4_header_checksum (ip4);
105 case IPIP_TRANSPORT_IP6:
106 vec_validate (rewrite, sizeof (*ip6) - 1);
107 ip6 = (ip6_header_t *) rewrite;
108 ip6->ip_version_traffic_class_and_flow_label =
109 clib_host_to_net_u32 (6 << 28);
111 /* fixup ip6 header length and protocol after-the-fact */
112 ip6->src_address.as_u64[0] = t->tunnel_src.ip6.as_u64[0];
113 ip6->src_address.as_u64[1] = t->tunnel_src.ip6.as_u64[1];
114 ip6->dst_address.as_u64[0] = dst->ip6.as_u64[0];
115 ip6->dst_address.as_u64[1] = dst->ip6.as_u64[1];
116 if (!(t->flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP))
117 ip6_set_dscp_network_order (ip6, t->dscp);
122 ip6->protocol = IP_PROTOCOL_IPV6;
125 ip6->protocol = IP_PROTOCOL_IP_IN_IP;
128 ip6->protocol = IP_PROTOCOL_MPLS_IN_IP;
139 ipip64_fixup (vlib_main_t * vm, const ip_adjacency_t * adj, vlib_buffer_t * b,
142 tunnel_encap_decap_flags_t flags;
145 flags = pointer_to_uword (data);
147 ip4 = vlib_buffer_get_current (b);
148 ip4->length = clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b));
149 tunnel_encap_fixup_6o4 (flags, ((ip6_header_t *) (ip4 + 1)), ip4);
151 ip4->checksum = ip4_header_checksum (ip4);
155 ipip44_fixup (vlib_main_t * vm, const ip_adjacency_t * adj, vlib_buffer_t * b,
158 tunnel_encap_decap_flags_t flags;
161 flags = pointer_to_uword (data);
163 ip4 = vlib_buffer_get_current (b);
164 ip4->length = clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b));
165 tunnel_encap_fixup_4o4 (flags, ip4 + 1, ip4);
167 ip4->checksum = ip4_header_checksum (ip4);
171 ipip46_fixup (vlib_main_t * vm, const ip_adjacency_t * adj, vlib_buffer_t * b,
174 tunnel_encap_decap_flags_t flags;
177 flags = pointer_to_uword (data);
179 /* Must set locally originated otherwise we're not allowed to
180 fragment the packet later */
181 b->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
183 ip6 = vlib_buffer_get_current (b);
184 ip6->payload_length =
185 clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b) -
187 tunnel_encap_fixup_4o6 (flags, b, ((ip4_header_t *) (ip6 + 1)), ip6);
191 ipip66_fixup (vlib_main_t * vm,
192 const ip_adjacency_t * adj, vlib_buffer_t * b, const void *data)
194 tunnel_encap_decap_flags_t flags;
197 flags = pointer_to_uword (data);
199 /* Must set locally originated otherwise we're not allowed to
200 fragment the packet later */
201 b->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
203 ip6 = vlib_buffer_get_current (b);
204 ip6->payload_length =
205 clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b) -
207 tunnel_encap_fixup_6o6 (flags, ip6 + 1, ip6);
211 ipipm6_fixup (vlib_main_t *vm, const ip_adjacency_t *adj, vlib_buffer_t *b,
214 tunnel_encap_decap_flags_t flags;
217 flags = pointer_to_uword (data);
219 /* Must set locally originated otherwise we're not allowed to
220 fragment the packet later and we'll get an unwanted hop-limt
222 b->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
224 ip6 = vlib_buffer_get_current (b);
225 ip6->payload_length =
226 clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b) - sizeof (*ip6));
227 tunnel_encap_fixup_mplso6 (flags, b, (mpls_unicast_header_t *) (ip6 + 1),
232 ipipm4_fixup (vlib_main_t *vm, const ip_adjacency_t *adj, vlib_buffer_t *b,
235 tunnel_encap_decap_flags_t flags;
238 flags = pointer_to_uword (data);
240 /* Must set locally originated otherwise we'll do a TTL decrement
241 * during ip4-rewrite */
242 b->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
244 ip4 = vlib_buffer_get_current (b);
246 clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b) - sizeof (*ip4));
247 tunnel_encap_fixup_mplso4 (flags, (mpls_unicast_header_t *) (ip4 + 1), ip4);
248 ip4->checksum = ip4_header_checksum (ip4);
252 ipip_tunnel_stack (adj_index_t ai)
259 sw_if_index = adj->rewrite_header.sw_if_index;
261 t = ipip_tunnel_db_find_by_sw_if_index (sw_if_index);
265 if ((vnet_hw_interface_get_flags (vnet_get_main (), t->hw_if_index) &
266 VNET_HW_INTERFACE_FLAG_LINK_UP) == 0)
268 adj_midchain_delegate_unstack (ai);
274 .fp_len = t->transport == IPIP_TRANSPORT_IP6 ? 128 : 32,
275 .fp_proto = (t->transport == IPIP_TRANSPORT_IP6 ?
278 .fp_addr = t->tunnel_dst
282 adj_midchain_delegate_stack (ai, t->fib_index, &dst);
287 ipip_adj_walk_cb (adj_index_t ai, void *ctx)
289 ipip_tunnel_stack (ai);
291 return (ADJ_WALK_RC_CONTINUE);
295 ipip_tunnel_restack (ipip_tunnel_t * gt)
297 fib_protocol_t proto;
300 * walk all the adjacencies on th IPIP interface and restack them
302 FOR_EACH_FIB_IP_PROTOCOL (proto)
304 adj_nbr_walk (gt->sw_if_index, proto, ipip_adj_walk_cb, NULL);
308 static adj_midchain_fixup_t
309 ipip_get_fixup (const ipip_tunnel_t * t, vnet_link_t lt, adj_flags_t * aflags)
311 if (t->transport == IPIP_TRANSPORT_IP6 && lt == VNET_LINK_IP6)
312 return (ipip66_fixup);
313 if (t->transport == IPIP_TRANSPORT_IP6 && lt == VNET_LINK_IP4)
314 return (ipip46_fixup);
315 if (t->transport == IPIP_TRANSPORT_IP6 && lt == VNET_LINK_MPLS)
316 return (ipipm6_fixup);
317 if (t->transport == IPIP_TRANSPORT_IP4 && lt == VNET_LINK_IP6)
318 return (ipip64_fixup);
319 if (t->transport == IPIP_TRANSPORT_IP4 && lt == VNET_LINK_MPLS)
320 return (ipipm4_fixup);
321 if (t->transport == IPIP_TRANSPORT_IP4 && lt == VNET_LINK_IP4)
323 *aflags = *aflags | ADJ_FLAG_MIDCHAIN_FIXUP_IP4O4_HDR;
324 return (ipip44_fixup);
328 return (ipip44_fixup);
332 ipip_update_adj (vnet_main_t * vnm, u32 sw_if_index, adj_index_t ai)
334 adj_midchain_fixup_t fixup;
338 t = ipip_tunnel_db_find_by_sw_if_index (sw_if_index);
342 if (t->flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_INNER_HASH)
343 af = ADJ_FLAG_MIDCHAIN_FIXUP_FLOW_HASH;
345 af = ADJ_FLAG_MIDCHAIN_IP_STACK;
347 if (VNET_LINK_ETHERNET == adj_get_link_type (ai))
348 af |= ADJ_FLAG_MIDCHAIN_NO_COUNT;
350 fixup = ipip_get_fixup (t, adj_get_link_type (ai), &af);
351 adj_nbr_midchain_update_rewrite
353 uword_to_pointer (t->flags, void *), af,
354 ipip_build_rewrite (vnm, sw_if_index,
355 adj_get_link_type (ai), &t->tunnel_dst));
356 ipip_tunnel_stack (ai);
359 typedef struct mipip_walk_ctx_t_
361 const ipip_tunnel_t *t;
362 const teib_entry_t *ne;
366 mipip_mk_complete_walk (adj_index_t ai, void *data)
368 adj_midchain_fixup_t fixup;
369 mipip_walk_ctx_t *ctx = data;
373 fixup = ipip_get_fixup (ctx->t, adj_get_link_type (ai), &af);
375 if (ctx->t->flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_INNER_HASH)
376 af = ADJ_FLAG_MIDCHAIN_FIXUP_FLOW_HASH;
378 af = ADJ_FLAG_MIDCHAIN_IP_STACK;
380 adj_nbr_midchain_update_rewrite
382 uword_to_pointer (ctx->t->flags, void *),
383 af, ipip_build_rewrite (vnet_get_main (),
385 adj_get_link_type (ai),
386 &teib_entry_get_nh (ctx->ne)->fp_addr));
388 teib_entry_adj_stack (ctx->ne, ai);
390 return (ADJ_WALK_RC_CONTINUE);
394 mipip_mk_incomplete_walk (adj_index_t ai, void *data)
396 adj_midchain_fixup_t fixup;
397 ipip_tunnel_t *t = data;
401 fixup = ipip_get_fixup (t, adj_get_link_type (ai), &af);
403 adj_nbr_midchain_update_rewrite (ai, fixup, NULL, ADJ_FLAG_NONE, NULL);
405 adj_midchain_delegate_unstack (ai);
407 return (ADJ_WALK_RC_CONTINUE);
411 mipip_update_adj (vnet_main_t * vnm, u32 sw_if_index, adj_index_t ai)
413 ipip_main_t *gm = &ipip_main;
414 adj_midchain_fixup_t fixup;
423 ti = gm->tunnel_index_by_sw_if_index[sw_if_index];
424 t = pool_elt_at_index (gm->tunnels, ti);
426 ne = teib_entry_find_46 (sw_if_index,
427 adj->ia_nh_proto, &adj->sub_type.nbr.next_hop);
431 // no TEIB entry to provide the next-hop
432 fixup = ipip_get_fixup (t, adj_get_link_type (ai), &af);
433 adj_nbr_midchain_update_rewrite
434 (ai, fixup, uword_to_pointer (t->flags, void *), ADJ_FLAG_NONE, NULL);
438 mipip_walk_ctx_t ctx = {
442 adj_nbr_walk_nh (sw_if_index,
444 &adj->sub_type.nbr.next_hop, mipip_mk_complete_walk, &ctx);
448 format_ipip_tunnel_name (u8 * s, va_list * args)
450 u32 dev_instance = va_arg (*args, u32);
451 ipip_main_t *gm = &ipip_main;
454 if (dev_instance >= vec_len (gm->tunnels))
455 return format (s, "<improperly-referenced>");
457 t = pool_elt_at_index (gm->tunnels, dev_instance);
458 return format (s, "ipip%d", t->user_instance);
462 format_ipip_device (u8 * s, va_list * args)
464 u32 dev_instance = va_arg (*args, u32);
465 CLIB_UNUSED (int verbose) = va_arg (*args, int);
467 s = format (s, "IPIP tunnel: id %d\n", dev_instance);
471 static clib_error_t *
472 ipip_interface_admin_up_down (vnet_main_t * vnm, u32 hw_if_index, u32 flags)
474 vnet_hw_interface_t *hi;
477 hi = vnet_get_hw_interface (vnm, hw_if_index);
479 t = ipip_tunnel_db_find_by_sw_if_index (hi->sw_if_index);
483 if (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
484 vnet_hw_interface_set_flags (vnm, hw_if_index,
485 VNET_HW_INTERFACE_FLAG_LINK_UP);
487 vnet_hw_interface_set_flags (vnm, hw_if_index, 0 /* down */ );
489 ipip_tunnel_restack (t);
491 return /* no error */ 0;
495 ipip_tunnel_desc (u32 sw_if_index,
496 ip46_address_t * src, ip46_address_t * dst, u8 * is_l2)
500 t = ipip_tunnel_db_find_by_sw_if_index (sw_if_index);
504 *src = t->tunnel_src;
505 *dst = t->tunnel_dst;
512 VNET_DEVICE_CLASS(ipip_device_class) = {
513 .name = "IPIP tunnel device",
514 .format_device_name = format_ipip_tunnel_name,
515 .format_device = format_ipip_device,
516 .format_tx_trace = format_ipip_tx_trace,
517 .admin_up_down_function = ipip_interface_admin_up_down,
518 .ip_tun_desc = ipip_tunnel_desc,
524 VNET_HW_INTERFACE_CLASS(ipip_hw_interface_class) = {
526 //.format_header = format_ipip_header_with_length,
527 //.unformat_header = unformat_ipip_header,
528 .build_rewrite = ipip_build_rewrite,
529 .update_adjacency = ipip_update_adj,
530 .flags = VNET_HW_INTERFACE_CLASS_FLAG_P2P,
533 VNET_HW_INTERFACE_CLASS(mipip_hw_interface_class) = {
535 //.format_header = format_ipip_header_with_length,
536 //.unformat_header = unformat_ipip_header,
537 .build_rewrite = ipip_build_rewrite,
538 .update_adjacency = mipip_update_adj,
539 .flags = VNET_HW_INTERFACE_CLASS_FLAG_NBMA,
544 ipip_tunnel_db_find (const ipip_tunnel_key_t * key)
546 ipip_main_t *gm = &ipip_main;
549 p = hash_get_mem (gm->tunnel_by_key, key);
552 return (pool_elt_at_index (gm->tunnels, p[0]));
556 ipip_tunnel_db_find_by_sw_if_index (u32 sw_if_index)
558 ipip_main_t *gm = &ipip_main;
559 if (vec_len (gm->tunnel_index_by_sw_if_index) <= sw_if_index)
561 u32 ti = gm->tunnel_index_by_sw_if_index[sw_if_index];
564 return pool_elt_at_index (gm->tunnels, ti);
568 ipip_tunnel_db_add (ipip_tunnel_t * t, const ipip_tunnel_key_t * key)
570 ipip_main_t *gm = &ipip_main;
572 hash_set_mem_alloc (&gm->tunnel_by_key, key, t->dev_instance);
576 ipip_tunnel_db_remove (ipip_tunnel_t * t, const ipip_tunnel_key_t * key)
578 ipip_main_t *gm = &ipip_main;
580 hash_unset_mem_free (&gm->tunnel_by_key, key);
584 ipip_mk_key_i (ipip_transport_t transport,
586 const ip46_address_t * src,
587 const ip46_address_t * dst,
588 u32 fib_index, ipip_tunnel_key_t * key)
590 key->transport = transport;
594 key->fib_index = fib_index;
599 ipip_mk_key (const ipip_tunnel_t * t, ipip_tunnel_key_t * key)
601 ipip_mk_key_i (t->transport, t->mode,
602 &t->tunnel_src, &t->tunnel_dst, t->fib_index, key);
606 ipip_teib_mk_key (const ipip_tunnel_t * t,
607 const teib_entry_t * ne, ipip_tunnel_key_t * key)
609 const fib_prefix_t *nh;
611 nh = teib_entry_get_nh (ne);
613 /* construct the key using mode P2P so it can be found in the DP */
614 ipip_mk_key_i (t->transport, IPIP_MODE_P2P,
615 &t->tunnel_src, &nh->fp_addr,
616 teib_entry_get_fib_index (ne), key);
620 ipip_teib_entry_added (const teib_entry_t * ne)
622 ipip_main_t *gm = &ipip_main;
623 const ip_address_t *nh;
624 ipip_tunnel_key_t key;
629 sw_if_index = teib_entry_get_sw_if_index (ne);
630 if (vec_len (gm->tunnel_index_by_sw_if_index) < sw_if_index)
633 t_idx = gm->tunnel_index_by_sw_if_index[sw_if_index];
635 if (INDEX_INVALID == t_idx)
638 t = pool_elt_at_index (gm->tunnels, t_idx);
640 ipip_teib_mk_key (t, ne, &key);
641 ipip_tunnel_db_add (t, &key);
643 // update the rewrites for each of the adjacencies for this next-hop
644 mipip_walk_ctx_t ctx = {
648 nh = teib_entry_get_peer (ne);
649 adj_nbr_walk_nh (teib_entry_get_sw_if_index (ne),
650 (AF_IP4 == ip_addr_version (nh) ?
653 &ip_addr_46 (nh), mipip_mk_complete_walk, &ctx);
657 ipip_teib_entry_deleted (const teib_entry_t * ne)
659 ipip_main_t *gm = &ipip_main;
660 const ip_address_t *nh;
661 ipip_tunnel_key_t key;
666 sw_if_index = teib_entry_get_sw_if_index (ne);
667 if (vec_len (gm->tunnel_index_by_sw_if_index) < sw_if_index)
670 t_idx = gm->tunnel_index_by_sw_if_index[sw_if_index];
672 if (INDEX_INVALID == t_idx)
675 t = pool_elt_at_index (gm->tunnels, t_idx);
677 ipip_teib_mk_key (t, ne, &key);
678 ipip_tunnel_db_remove (t, &key);
680 nh = teib_entry_get_peer (ne);
682 /* make all the adjacencies incomplete */
683 adj_nbr_walk_nh (teib_entry_get_sw_if_index (ne),
684 (AF_IP4 == ip_addr_version (nh) ?
687 &ip_addr_46 (nh), mipip_mk_incomplete_walk, t);
691 ipip_tunnel_delete_teib_walk (index_t nei, void *ctx)
693 ipip_tunnel_t *t = ctx;
694 ipip_tunnel_key_t key;
696 ipip_teib_mk_key (t, teib_entry_get (nei), &key);
697 ipip_tunnel_db_remove (t, &key);
699 return (WALK_CONTINUE);
703 ipip_tunnel_add_teib_walk (index_t nei, void *ctx)
705 ipip_tunnel_t *t = ctx;
706 ipip_tunnel_key_t key;
708 ipip_teib_mk_key (t, teib_entry_get (nei), &key);
709 ipip_tunnel_db_add (t, &key);
711 return (WALK_CONTINUE);
715 ipip_add_tunnel (ipip_transport_t transport,
716 u32 instance, ip46_address_t * src, ip46_address_t * dst,
717 u32 fib_index, tunnel_encap_decap_flags_t flags,
718 ip_dscp_t dscp, tunnel_mode_t tmode, u32 * sw_if_indexp)
720 ipip_main_t *gm = &ipip_main;
721 vnet_main_t *vnm = gm->vnet_main;
722 ip4_main_t *im4 = &ip4_main;
723 ip6_main_t *im6 = &ip6_main;
725 vnet_hw_interface_t *hi;
726 u32 hw_if_index, sw_if_index;
727 ipip_tunnel_key_t key;
730 if (tmode == TUNNEL_MODE_MP && !ip46_address_is_zero (dst))
731 return (VNET_API_ERROR_INVALID_DST_ADDRESS);
733 mode = (tmode == TUNNEL_MODE_P2P ? IPIP_MODE_P2P : IPIP_MODE_P2MP);
734 ipip_mk_key_i (transport, mode, src, dst, fib_index, &key);
736 t = ipip_tunnel_db_find (&key);
740 sw_if_indexp[0] = t->sw_if_index;
741 return VNET_API_ERROR_IF_ALREADY_EXISTS;
744 pool_get_aligned (gm->tunnels, t, CLIB_CACHE_LINE_BYTES);
745 clib_memset (t, 0, sizeof (*t));
747 /* Reconcile the real dev_instance and a possible requested instance */
748 u32 t_idx = t - gm->tunnels; /* tunnel index (or instance) */
749 u32 u_idx = instance; /* user specified instance */
752 if (hash_get (gm->instance_used, u_idx))
754 pool_put (gm->tunnels, t);
755 return VNET_API_ERROR_INSTANCE_IN_USE;
757 hash_set (gm->instance_used, u_idx, 1);
759 t->dev_instance = t_idx; /* actual */
760 t->user_instance = u_idx; /* name */
762 hw_if_index = vnet_register_interface (vnm, ipip_device_class.index, t_idx,
763 (mode == IPIP_MODE_P2P ?
764 ipip_hw_interface_class.index :
765 mipip_hw_interface_class.index),
768 hi = vnet_get_hw_interface (vnm, hw_if_index);
769 sw_if_index = hi->sw_if_index;
772 t->hw_if_index = hw_if_index;
773 t->fib_index = fib_index;
774 t->sw_if_index = sw_if_index;
777 t->transport = transport;
779 vec_validate_init_empty (gm->tunnel_index_by_sw_if_index, sw_if_index, ~0);
780 gm->tunnel_index_by_sw_if_index[sw_if_index] = t_idx;
782 if (t->transport == IPIP_TRANSPORT_IP4)
784 vec_validate (im4->fib_index_by_sw_if_index, sw_if_index);
785 hi->min_packet_bytes = 64 + sizeof (ip4_header_t);
789 vec_validate (im6->fib_index_by_sw_if_index, sw_if_index);
790 hi->min_packet_bytes = 64 + sizeof (ip6_header_t);
793 /* Standard default ipip MTU. */
794 vnet_sw_interface_set_mtu (vnm, sw_if_index, 9000);
796 t->tunnel_src = *src;
797 t->tunnel_dst = *dst;
799 ipip_tunnel_db_add (t, &key);
801 if (t->mode == IPIP_MODE_P2MP)
802 teib_walk_itf (t->sw_if_index, ipip_tunnel_add_teib_walk, t);
805 *sw_if_indexp = sw_if_index;
807 if (t->transport == IPIP_TRANSPORT_IP6 && !gm->ip6_protocol_registered)
809 ip6_register_protocol (IP_PROTOCOL_IP_IN_IP, ipip6_input_node.index);
810 ip6_register_protocol (IP_PROTOCOL_MPLS_IN_IP, ipip6_input_node.index);
811 ip6_register_protocol (IP_PROTOCOL_IPV6, ipip6_input_node.index);
812 gm->ip6_protocol_registered = true;
814 else if (t->transport == IPIP_TRANSPORT_IP4 && !gm->ip4_protocol_registered)
816 ip4_register_protocol (IP_PROTOCOL_IP_IN_IP, ipip4_input_node.index);
817 ip4_register_protocol (IP_PROTOCOL_MPLS_IN_IP, ipip4_input_node.index);
818 ip4_register_protocol (IP_PROTOCOL_IPV6, ipip4_input_node.index);
819 gm->ip4_protocol_registered = true;
825 ipip_del_tunnel (u32 sw_if_index)
827 ipip_main_t *gm = &ipip_main;
828 vnet_main_t *vnm = gm->vnet_main;
830 ipip_tunnel_key_t key;
832 t = ipip_tunnel_db_find_by_sw_if_index (sw_if_index);
834 return VNET_API_ERROR_NO_SUCH_ENTRY;
836 if (t->mode == IPIP_MODE_P2MP)
837 teib_walk_itf (t->sw_if_index, ipip_tunnel_delete_teib_walk, t);
839 vnet_sw_interface_set_flags (vnm, sw_if_index, 0 /* down */ );
840 gm->tunnel_index_by_sw_if_index[sw_if_index] = ~0;
841 vnet_delete_hw_interface (vnm, t->hw_if_index);
842 hash_unset (gm->instance_used, t->user_instance);
844 ipip_mk_key (t, &key);
845 ipip_tunnel_db_remove (t, &key);
846 pool_put (gm->tunnels, t);
851 const static teib_vft_t ipip_teib_vft = {
852 .nv_added = ipip_teib_entry_added,
853 .nv_deleted = ipip_teib_entry_deleted,
856 static clib_error_t *
857 ipip_init (vlib_main_t * vm)
859 ipip_main_t *gm = &ipip_main;
861 clib_memset (gm, 0, sizeof (gm[0]));
863 gm->vnet_main = vnet_get_main ();
865 hash_create_mem (0, sizeof (ipip_tunnel_key_t), sizeof (uword));
867 teib_register (&ipip_teib_vft);
872 VLIB_INIT_FUNCTION (ipip_init);
875 * fd.io coding-style-patch-verification: ON
878 * eval: (c-set-style "gnu")