2 * ipsec_tun.h : IPSEC tunnel protection
4 * Copyright (c) 2015 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 agreed 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.
18 #include <vnet/ipsec/ipsec_tun.h>
19 #include <vnet/ipsec/ipsec_itf.h>
20 #include <vnet/ipsec/esp.h>
21 #include <vnet/udp/udp_local.h>
22 #include <vnet/adj/adj_delegate.h>
23 #include <vnet/adj/adj_midchain.h>
24 #include <vnet/teib/teib.h>
25 #include <vnet/mpls/mpls.h>
27 /* instantiate the bihash functions */
28 #include <vppinfra/bihash_8_16.h>
29 #include <vppinfra/bihash_template.c>
30 #include <vppinfra/bihash_24_16.h>
31 #include <vppinfra/bihash_template.c>
33 #define IPSEC_TUN_DEFAULT_HASH_NUM_BUCKETS (64 * 1024)
34 #define IPSEC_TUN_DEFAULT_HASH_MEMORY_SIZE 512 << 20
39 vlib_log_class_t ipsec_tun_protect_logger;
42 * Pool of tunnel protection objects
44 ipsec_tun_protect_t *ipsec_tun_protect_pool;
47 * Adj delegate registered type
49 static adj_delegate_type_t ipsec_tun_adj_delegate_type;
52 * Adj index to TX SA mapping
54 index_t *ipsec_tun_protect_sa_by_adj_index;
56 const ip_address_t IP_ADDR_ALL_0 = IP_ADDRESS_V4_ALL_0S;
59 * The DB of all added per-nh tunnel protectiond
61 typedef struct ipsec_tun_protect_itf_db_t_
63 /** A hash table key'd on IP (4 or 6) address */
65 /** If the interface is P2P then there is only one protect
66 * object associated with the auto-adj for each NH proto */
68 } ipsec_tun_protect_itf_db_t;
70 typedef struct ipsec_tun_protect_db_t_
72 /** Per-interface vector */
73 ipsec_tun_protect_itf_db_t *id_itf;
74 } ipsec_tun_protect_db_t;
76 static ipsec_tun_protect_db_t itp_db;
78 const static ipsec_tun_protect_itf_db_t IPSEC_TUN_PROTECT_DEFAULT_DB_ENTRY = {
79 .id_itp = INDEX_INVALID,
82 #define ITP_DBG(_itp, _fmt, _args...) \
84 vlib_log_debug(ipsec_tun_protect_logger, \
86 format_ipsec_tun_protect, \
90 #define ITP_DBG2(_fmt, _args...) \
92 vlib_log_debug(ipsec_tun_protect_logger, \
96 static u32 ipsec_tun_node_regs[N_AF];
99 ipsec_tun_register_nodes (ip_address_family_t af)
101 if (0 == ipsec_tun_node_regs[af]++)
105 ipsec_register_udp_port (UDP_DST_PORT_ipsec);
106 ip4_register_protocol (IP_PROTOCOL_IPSEC_ESP,
107 ipsec4_tun_input_node.index);
110 ip6_register_protocol (IP_PROTOCOL_IPSEC_ESP,
111 ipsec6_tun_input_node.index);
116 ipsec_tun_unregister_nodes (ip_address_family_t af)
118 ASSERT (0 != ipsec_tun_node_regs[af]);
119 if (0 == --ipsec_tun_node_regs[af])
123 ipsec_unregister_udp_port (UDP_DST_PORT_ipsec);
124 ip4_unregister_protocol (IP_PROTOCOL_IPSEC_ESP);
127 ip6_unregister_protocol (IP_PROTOCOL_IPSEC_ESP);
131 static inline const ipsec_tun_protect_t *
132 ipsec_tun_protect_from_const_base (const adj_delegate_t * ad)
136 return (pool_elt_at_index (ipsec_tun_protect_pool, ad->ad_index));
140 ipsec_tun_protect_get_adj_next (vnet_link_t linkt,
141 const ipsec_tun_protect_t *itp)
149 if (!(itp->itp_flags & IPSEC_PROTECT_ITF))
151 if (ip46_address_is_ip4 (&itp->itp_tun.src))
152 linkt = VNET_LINK_IP4;
154 linkt = VNET_LINK_IP6;
160 next = im->esp4_encrypt_tun_node_index;
163 next = im->esp6_encrypt_tun_node_index;
166 next = im->esp_mpls_encrypt_tun_node_index;
170 case VNET_LINK_ETHERNET:
179 ipsec_tun_setup_tx_nodes (u32 sw_if_index, const ipsec_tun_protect_t *itp)
181 vnet_feature_modify_end_node (
182 ip4_main.lookup_main.output_feature_arc_index, sw_if_index,
183 ipsec_tun_protect_get_adj_next (VNET_LINK_IP4, itp));
184 vnet_feature_modify_end_node (
185 ip6_main.lookup_main.output_feature_arc_index, sw_if_index,
186 ipsec_tun_protect_get_adj_next (VNET_LINK_IP6, itp));
187 vnet_feature_modify_end_node (
188 mpls_main.output_feature_arc_index, sw_if_index,
189 ipsec_tun_protect_get_adj_next (VNET_LINK_MPLS, itp));
193 ipsec_tun_protect_add_adj (adj_index_t ai, const ipsec_tun_protect_t * itp)
195 vec_validate_init_empty (ipsec_tun_protect_sa_by_adj_index, ai,
200 ipsec_tun_protect_sa_by_adj_index[ai] = INDEX_INVALID;
201 adj_nbr_midchain_reset_next_node (ai);
205 ipsec_tun_protect_sa_by_adj_index[ai] = itp->itp_out_sa;
206 adj_nbr_midchain_update_next_node (
207 ai, ipsec_tun_protect_get_adj_next (adj_get_link_type (ai), itp));
212 ipsec_tun_protect_find (u32 sw_if_index, const ip_address_t * nh)
214 ipsec_tun_protect_itf_db_t *idi;
217 if (vec_len (itp_db.id_itf) <= sw_if_index)
218 return INDEX_INVALID;
220 if (vnet_sw_interface_is_p2p (vnet_get_main (), sw_if_index))
221 return (itp_db.id_itf[sw_if_index].id_itp);
223 idi = &itp_db.id_itf[sw_if_index];
224 p = hash_get_mem (idi->id_hash, nh);
228 return INDEX_INVALID;
234 ipsec_tun_protect_rx_db_add (ipsec_main_t * im,
235 const ipsec_tun_protect_t * itp)
237 const ipsec_sa_t *sa;
240 if (ip46_address_is_zero (&itp->itp_crypto.dst))
244 FOR_EACH_IPSEC_PROTECT_INPUT_SAI(itp, sai,
246 sa = ipsec_sa_get (sai);
248 ipsec_tun_lkup_result_t res = {
249 .tun_index = itp - ipsec_tun_protect_pool,
251 .flags = itp->itp_flags,
252 .sw_if_index = itp->itp_sw_if_index,
256 * The key is formed from the tunnel's destination
257 * as the packet lookup is done from the packet's source
259 if (ip46_address_is_ip4 (&itp->itp_crypto.dst))
261 ipsec4_tunnel_kv_t key = {
264 clib_bihash_kv_8_16_t *bkey = (clib_bihash_kv_8_16_t*)&key;
266 ipsec4_tunnel_mk_key(&key, &itp->itp_crypto.dst.ip4,
267 clib_host_to_net_u32 (sa->spi));
269 if (!clib_bihash_is_initialised_8_16 (&im->tun4_protect_by_key))
270 clib_bihash_init_8_16 (&im->tun4_protect_by_key,
271 "IPSec IPv4 tunnels",
272 IPSEC_TUN_DEFAULT_HASH_NUM_BUCKETS,
273 IPSEC_TUN_DEFAULT_HASH_MEMORY_SIZE);
275 clib_bihash_add_del_8_16 (&im->tun4_protect_by_key, bkey, 1);
276 ipsec_tun_register_nodes (AF_IP4);
280 ipsec6_tunnel_kv_t key = {
282 .remote_ip = itp->itp_crypto.dst.ip6,
283 .spi = clib_host_to_net_u32 (sa->spi),
287 clib_bihash_kv_24_16_t *bkey = (clib_bihash_kv_24_16_t*)&key;
289 if (!clib_bihash_is_initialised_24_16 (&im->tun6_protect_by_key))
290 clib_bihash_init_24_16 (&im->tun6_protect_by_key,
291 "IPSec IPv6 tunnels",
292 IPSEC_TUN_DEFAULT_HASH_NUM_BUCKETS,
293 IPSEC_TUN_DEFAULT_HASH_MEMORY_SIZE);
294 clib_bihash_add_del_24_16 (&im->tun6_protect_by_key, bkey, 1);
295 ipsec_tun_register_nodes (AF_IP6);
302 ipsec_tun_protect_adj_add (adj_index_t ai, void *arg)
304 ipsec_tun_protect_t *itp = arg;
305 adj_delegate_add (adj_get (ai), ipsec_tun_adj_delegate_type,
306 itp - ipsec_tun_protect_pool);
307 ipsec_tun_protect_add_adj (ai, itp);
309 if (itp->itp_flags & IPSEC_PROTECT_ITF)
310 ipsec_itf_adj_stack (ai, itp->itp_out_sa);
312 return (ADJ_WALK_RC_CONTINUE);
316 ipsec_tun_protect_tx_db_add (ipsec_tun_protect_t * itp)
319 * add the delegate to the adj
321 ipsec_tun_protect_itf_db_t *idi;
322 fib_protocol_t nh_proto;
325 vec_validate_init_empty (itp_db.id_itf,
326 itp->itp_sw_if_index,
327 IPSEC_TUN_PROTECT_DEFAULT_DB_ENTRY);
329 idi = &itp_db.id_itf[itp->itp_sw_if_index];
331 if (vnet_sw_interface_is_p2p (vnet_get_main (), itp->itp_sw_if_index))
333 if (INDEX_INVALID == idi->id_itp)
335 ipsec_tun_setup_tx_nodes (itp->itp_sw_if_index, itp);
337 idi->id_itp = itp - ipsec_tun_protect_pool;
339 FOR_EACH_FIB_IP_PROTOCOL (nh_proto)
340 adj_nbr_walk (itp->itp_sw_if_index,
341 nh_proto, ipsec_tun_protect_adj_add, itp);
345 if (NULL == idi->id_hash)
348 hash_create_mem (0, sizeof (ip_address_t), sizeof (uword));
350 * enable the encrypt feature for egress if this is the first addition
353 ipsec_tun_setup_tx_nodes (itp->itp_sw_if_index, itp);
356 hash_set_mem (idi->id_hash, itp->itp_key, itp - ipsec_tun_protect_pool);
359 * walk all the adjs with the same nh on this interface
360 * to associate them with this protection
362 nh_proto = ip_address_to_46 (itp->itp_key, &nh);
364 adj_nbr_walk_nh (itp->itp_sw_if_index,
365 nh_proto, &nh, ipsec_tun_protect_adj_add, itp);
367 ipsec_tun_register_nodes (FIB_PROTOCOL_IP6 == nh_proto ?
373 ipsec_tun_protect_rx_db_remove (ipsec_main_t * im,
374 const ipsec_tun_protect_t * itp)
376 const ipsec_sa_t *sa;
379 FOR_EACH_IPSEC_PROTECT_INPUT_SA(itp, sa,
381 if (ip46_address_is_ip4 (&itp->itp_crypto.dst))
383 ipsec4_tunnel_kv_t key;
384 clib_bihash_kv_8_16_t res, *bkey = (clib_bihash_kv_8_16_t*)&key;
386 ipsec4_tunnel_mk_key(&key, &itp->itp_crypto.dst.ip4,
387 clib_host_to_net_u32 (sa->spi));
389 if (!clib_bihash_search_8_16 (&im->tun4_protect_by_key, bkey, &res))
391 clib_bihash_add_del_8_16 (&im->tun4_protect_by_key, bkey, 0);
392 ipsec_tun_unregister_nodes(AF_IP4);
397 ipsec6_tunnel_kv_t key = {
399 .remote_ip = itp->itp_crypto.dst.ip6,
400 .spi = clib_host_to_net_u32 (sa->spi),
403 clib_bihash_kv_24_16_t res, *bkey = (clib_bihash_kv_24_16_t*)&key;
405 if (!clib_bihash_search_24_16 (&im->tun6_protect_by_key, bkey, &res))
407 clib_bihash_add_del_24_16 (&im->tun6_protect_by_key, bkey, 0);
408 ipsec_tun_unregister_nodes(AF_IP6);
416 ipsec_tun_protect_adj_remove (adj_index_t ai, void *arg)
418 ipsec_tun_protect_t *itp = arg;
420 adj_delegate_remove (ai, ipsec_tun_adj_delegate_type);
421 ipsec_tun_protect_add_adj (ai, NULL);
423 if (itp->itp_flags & IPSEC_PROTECT_ITF)
424 ipsec_itf_adj_unstack (ai);
426 return (ADJ_WALK_RC_CONTINUE);
430 ipsec_tun_protect_tx_db_remove (ipsec_tun_protect_t * itp)
432 ipsec_tun_protect_itf_db_t *idi;
433 fib_protocol_t nh_proto;
436 nh_proto = ip_address_to_46 (itp->itp_key, &nh);
437 idi = &itp_db.id_itf[itp->itp_sw_if_index];
439 if (vnet_sw_interface_is_p2p (vnet_get_main (), itp->itp_sw_if_index))
441 ipsec_itf_reset_tx_nodes (itp->itp_sw_if_index);
442 idi->id_itp = INDEX_INVALID;
444 FOR_EACH_FIB_IP_PROTOCOL (nh_proto)
445 adj_nbr_walk (itp->itp_sw_if_index,
446 nh_proto, ipsec_tun_protect_adj_remove, itp);
450 adj_nbr_walk_nh (itp->itp_sw_if_index,
451 nh_proto, &nh, ipsec_tun_protect_adj_remove, itp);
453 hash_unset_mem (idi->id_hash, itp->itp_key);
455 if (0 == hash_elts (idi->id_hash))
457 ipsec_itf_reset_tx_nodes (itp->itp_sw_if_index);
458 hash_free (idi->id_hash);
461 ipsec_tun_unregister_nodes (FIB_PROTOCOL_IP6 == nh_proto ?
467 ipsec_tun_protect_set_crypto_addr (ipsec_tun_protect_t * itp)
472 FOR_EACH_IPSEC_PROTECT_INPUT_SA(itp, sa,
474 if (ipsec_sa_is_set_IS_TUNNEL (sa))
476 itp->itp_crypto.src = ip_addr_46 (&sa->tunnel.t_dst);
477 itp->itp_crypto.dst = ip_addr_46 (&sa->tunnel.t_src);
478 if (!(itp->itp_flags & IPSEC_PROTECT_ITF))
480 ipsec_sa_set_IS_PROTECT (sa);
481 itp->itp_flags |= IPSEC_PROTECT_ENCAPED;
486 itp->itp_crypto.src = itp->itp_tun.src;
487 itp->itp_crypto.dst = itp->itp_tun.dst;
488 itp->itp_flags &= ~IPSEC_PROTECT_ENCAPED;
495 ipsec_tun_protect_config (ipsec_main_t * im,
496 ipsec_tun_protect_t * itp, u32 sa_out, u32 * sas_in)
501 itp->itp_n_sa_in = vec_len (sas_in);
502 for (ii = 0; ii < itp->itp_n_sa_in; ii++)
503 itp->itp_in_sas[ii] = sas_in[ii];
504 itp->itp_out_sa = sa_out;
506 ipsec_sa_lock (itp->itp_out_sa);
508 if (itp->itp_flags & IPSEC_PROTECT_ITF)
509 ipsec_sa_set_NO_ALGO_NO_DROP (ipsec_sa_get (itp->itp_out_sa));
512 FOR_EACH_IPSEC_PROTECT_INPUT_SAI(itp, sai,
516 ipsec_tun_protect_set_crypto_addr(itp);
520 * add to the DB against each SA
522 ipsec_tun_protect_rx_db_add (im, itp);
523 ipsec_tun_protect_tx_db_add (itp);
525 ITP_DBG (itp, "configured");
529 ipsec_tun_protect_unconfig (ipsec_main_t * im, ipsec_tun_protect_t * itp)
535 FOR_EACH_IPSEC_PROTECT_INPUT_SA(itp, sa,
537 ipsec_sa_unset_IS_PROTECT (sa);
540 ipsec_tun_protect_rx_db_remove (im, itp);
541 ipsec_tun_protect_tx_db_remove (itp);
543 ipsec_sa_unset_NO_ALGO_NO_DROP (ipsec_sa_get (itp->itp_out_sa));
544 ipsec_sa_unlock(itp->itp_out_sa);
546 FOR_EACH_IPSEC_PROTECT_INPUT_SAI(itp, sai,
548 ipsec_sa_unlock(sai);
551 ITP_DBG (itp, "unconfigured");
555 ipsec_tun_protect_update_from_teib (ipsec_tun_protect_t * itp,
556 const teib_entry_t * ne)
560 const fib_prefix_t *pfx;
562 pfx = teib_entry_get_nh (ne);
564 ip46_address_copy (&itp->itp_tun.dst, &pfx->fp_addr);
567 ip46_address_reset (&itp->itp_tun.dst);
571 ipsec_tun_protect_update (u32 sw_if_index,
572 const ip_address_t * nh, u32 sa_out, u32 * sas_in)
574 ipsec_tun_protect_t *itp;
582 ITP_DBG2 ("update: %U/%U",
583 format_vnet_sw_if_index_name, vnet_get_main (), sw_if_index,
584 format_ip_address, nh);
586 if (vec_len (sas_in) > ITP_MAX_N_SA_IN)
588 rv = VNET_API_ERROR_LIMIT_EXCEEDED;
594 itpi = ipsec_tun_protect_find (sw_if_index, nh);
596 vec_foreach_index (ii, sas_in)
598 sas_in[ii] = ipsec_sa_find_and_lock (sas_in[ii]);
599 if (~0 == sas_in[ii])
601 rv = VNET_API_ERROR_INVALID_VALUE;
606 sa_out = ipsec_sa_find_and_lock (sa_out);
610 rv = VNET_API_ERROR_INVALID_VALUE;
614 if (INDEX_INVALID == itpi)
616 vnet_device_class_t *dev_class;
617 vnet_hw_interface_t *hi;
621 vnm = vnet_get_main ();
622 hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
623 dev_class = vnet_get_device_class (vnm, hi->dev_class_index);
625 if (NULL == dev_class->ip_tun_desc)
627 rv = VNET_API_ERROR_INVALID_SW_IF_INDEX;
631 pool_get_zero (ipsec_tun_protect_pool, itp);
633 itp->itp_sw_if_index = sw_if_index;
634 itp->itp_ai = ADJ_INDEX_INVALID;
636 itp->itp_n_sa_in = vec_len (sas_in);
637 for (ii = 0; ii < itp->itp_n_sa_in; ii++)
638 itp->itp_in_sas[ii] = sas_in[ii];
639 itp->itp_out_sa = sa_out;
641 itp->itp_key = clib_mem_alloc (sizeof (*itp->itp_key));
642 ip_address_copy (itp->itp_key, nh);
644 rv = dev_class->ip_tun_desc (sw_if_index,
646 &itp->itp_tun.dst, &is_l2);
651 if (ip46_address_is_zero (&itp->itp_tun.src))
654 * must be one of those pesky ipsec interfaces that has no encap.
655 * the encap then MUST come from the tunnel mode SA.
659 sa = ipsec_sa_get (itp->itp_out_sa);
661 if (!ipsec_sa_is_set_IS_TUNNEL (sa))
663 rv = VNET_API_ERROR_INVALID_DST_ADDRESS;
667 itp->itp_flags |= IPSEC_PROTECT_ITF;
669 else if (ip46_address_is_zero (&itp->itp_tun.dst))
671 /* tunnel has no destination address, presumably because it's p2mp
672 in which case we use the nh that this is protection for */
673 ipsec_tun_protect_update_from_teib
674 (itp, teib_entry_find (sw_if_index, nh));
678 itp->itp_flags |= IPSEC_PROTECT_L2;
681 * add to the tunnel DB for ingress
682 * - if the SA is in trasnport mode, then the packates will arrive
683 * with the IP src,dst of the protected tunnel, in which case we can
684 * simply strip the IP header and hand the payload to the protocol
685 * appropriate input handler
686 * - if the SA is in tunnel mode then there are two IP headers present
687 * one for the crytpo tunnel endpoints (described in the SA) and one
688 * for the tunnel endpoints. The outer IP headers in the srriving
689 * packets will have the crypto endpoints. So the DB needs to contain
690 * the crpto endpoint. Once the crypto header is stripped, revealing,
691 * the tunnel-IP we have 2 choices:
692 * 1) do a tunnel lookup based on the revealed header
693 * 2) skip the tunnel lookup and assume that the packet matches the
694 * one that is protected here.
695 * If we did 1) then we would allow our peer to use the SA for tunnel
696 * X to inject traffic onto tunnel Y, this is not good. If we do 2)
697 * then we don't verify that the peer is indeed using SA for tunnel
698 * X and addressing tunnel X. So we take a compromise, once the SA
699 * matches to tunnel X we veriy that the inner IP matches the value
700 * of the tunnel we are protecting, else it's dropped.
702 ipsec_tun_protect_config (im, itp, sa_out, sas_in);
706 /* updating SAs only */
707 itp = pool_elt_at_index (ipsec_tun_protect_pool, itpi);
709 ipsec_tun_protect_unconfig (im, itp);
710 ipsec_tun_protect_config (im, itp, sa_out, sas_in);
713 ipsec_sa_unlock (sa_out);
714 vec_foreach (saip, sas_in) ipsec_sa_unlock (*saip);
722 ipsec_tun_protect_del (u32 sw_if_index, const ip_address_t * nh)
724 ipsec_tun_protect_t *itp;
728 ITP_DBG2 ("delete: %U/%U",
729 format_vnet_sw_if_index_name, vnet_get_main (), sw_if_index,
730 format_ip_address, nh);
736 itpi = ipsec_tun_protect_find (sw_if_index, nh);
738 if (INDEX_INVALID == itpi)
739 return (VNET_API_ERROR_NO_SUCH_ENTRY);
741 itp = ipsec_tun_protect_get (itpi);
742 ipsec_tun_protect_unconfig (im, itp);
744 if (ADJ_INDEX_INVALID != itp->itp_ai)
745 adj_unlock (itp->itp_ai);
747 clib_mem_free (itp->itp_key);
748 pool_put (ipsec_tun_protect_pool, itp);
754 ipsec_tun_protect_walk (ipsec_tun_protect_walk_cb_t fn, void *ctx)
759 pool_foreach_index (itpi, ipsec_tun_protect_pool)
767 ipsec_tun_protect_walk_itf (u32 sw_if_index,
768 ipsec_tun_protect_walk_cb_t fn, void *ctx)
770 ipsec_tun_protect_itf_db_t *idi;
774 if (vec_len (itp_db.id_itf) <= sw_if_index)
777 idi = &itp_db.id_itf[sw_if_index];
780 hash_foreach(key, itpi, idi->id_hash,
785 if (INDEX_INVALID != idi->id_itp)
786 fn (idi->id_itp, ctx);
790 ipsec_tun_feature_update (u32 sw_if_index, u8 arc_index, u8 is_enable,
793 ipsec_tun_protect_t *itp;
796 if (arc_index != feature_main.device_input_feature_arc_index)
799 /* Only p2p tunnels supported */
800 itpi = ipsec_tun_protect_find (sw_if_index, &IP_ADDR_ALL_0);
801 if (itpi == INDEX_INVALID)
804 itp = ipsec_tun_protect_get (itpi);
808 u32 decrypt_tun = ip46_address_is_ip4 (&itp->itp_crypto.dst) ?
809 ipsec_main.esp4_decrypt_tun_node_index :
810 ipsec_main.esp6_decrypt_tun_node_index;
812 if (!(itp->itp_flags & IPSEC_PROTECT_FEAT))
814 itp->itp_flags |= IPSEC_PROTECT_FEAT;
815 vnet_feature_modify_end_node (
816 feature_main.device_input_feature_arc_index, sw_if_index,
822 if (itp->itp_flags & IPSEC_PROTECT_FEAT)
824 itp->itp_flags &= ~IPSEC_PROTECT_FEAT;
827 vlib_get_node_by_name (vlib_get_main (), (u8 *) "ethernet-input")
830 vnet_feature_modify_end_node (
831 feature_main.device_input_feature_arc_index, sw_if_index, eth_in);
835 /* Propagate flag change into lookup entries */
836 ipsec_tun_protect_rx_db_remove (&ipsec_main, itp);
837 ipsec_tun_protect_rx_db_add (&ipsec_main, itp);
841 ipsec_tun_protect_adj_delegate_adj_deleted (adj_delegate_t * ad)
843 /* remove our delegate */
844 ipsec_tun_protect_add_adj (ad->ad_adj_index, NULL);
845 adj_delegate_remove (ad->ad_adj_index, ipsec_tun_adj_delegate_type);
849 ipsec_tun_protect_adj_delegate_adj_modified (adj_delegate_t * ad)
851 ipsec_tun_protect_add_adj (ad->ad_adj_index,
852 ipsec_tun_protect_get (ad->ad_index));
856 ipsec_tun_protect_adj_delegate_adj_created (adj_index_t ai)
858 /* add our delegate if there is protection for this neighbour */
859 ip_address_t ip = IP_ADDRESS_V4_ALL_0S;
863 if (!adj_is_midchain (ai))
866 vec_validate_init_empty (ipsec_tun_protect_sa_by_adj_index, ai,
871 ip_address_from_46 (&adj->sub_type.midchain.next_hop,
872 adj->ia_nh_proto, &ip);
874 itpi = ipsec_tun_protect_find (adj->rewrite_header.sw_if_index, &ip);
876 if (INDEX_INVALID != itpi)
877 ipsec_tun_protect_adj_add (ai, ipsec_tun_protect_get (itpi));
881 ipsec_tun_protect_adj_delegate_format (const adj_delegate_t * aed, u8 * s)
883 const ipsec_tun_protect_t *itp;
885 itp = ipsec_tun_protect_from_const_base (aed);
886 s = format (s, "ipsec-tun-protect:\n%U", format_ipsec_tun_protect, itp);
892 ipsec_tun_teib_entry_added (const teib_entry_t * ne)
894 ipsec_tun_protect_t *itp;
897 itpi = ipsec_tun_protect_find (teib_entry_get_sw_if_index (ne),
898 teib_entry_get_peer (ne));
900 if (INDEX_INVALID == itpi)
903 itp = ipsec_tun_protect_get (itpi);
904 ipsec_tun_protect_rx_db_remove (&ipsec_main, itp);
905 ipsec_tun_protect_update_from_teib (itp, ne);
906 ipsec_tun_protect_set_crypto_addr (itp);
907 ipsec_tun_protect_rx_db_add (&ipsec_main, itp);
909 ITP_DBG (itp, "teib-added");
913 ipsec_tun_teib_entry_deleted (const teib_entry_t * ne)
915 ipsec_tun_protect_t *itp;
918 itpi = ipsec_tun_protect_find (teib_entry_get_sw_if_index (ne),
919 teib_entry_get_peer (ne));
921 if (INDEX_INVALID == itpi)
924 itp = ipsec_tun_protect_get (itpi);
925 ipsec_tun_protect_rx_db_remove (&ipsec_main, itp);
926 ipsec_tun_protect_update_from_teib (itp, NULL);
927 ipsec_tun_protect_set_crypto_addr (itp);
929 ITP_DBG (itp, "teib-removed");
933 * VFT registered with the adjacency delegate
935 const static adj_delegate_vft_t ipsec_tun_adj_delegate_vft = {
936 .adv_adj_deleted = ipsec_tun_protect_adj_delegate_adj_deleted,
937 .adv_adj_created = ipsec_tun_protect_adj_delegate_adj_created,
938 .adv_adj_modified = ipsec_tun_protect_adj_delegate_adj_modified,
939 .adv_format = ipsec_tun_protect_adj_delegate_format,
942 const static teib_vft_t ipsec_tun_teib_vft = {
943 .nv_added = ipsec_tun_teib_entry_added,
944 .nv_deleted = ipsec_tun_teib_entry_deleted,
948 ipsec_tun_table_init (ip_address_family_t af, uword table_size, u32 n_buckets)
955 clib_bihash_init_8_16 (&im->tun4_protect_by_key,
956 "IPSec IPv4 tunnels", n_buckets, table_size);
958 clib_bihash_init_24_16 (&im->tun6_protect_by_key,
959 "IPSec IPv6 tunnels", n_buckets, table_size);
962 static clib_error_t *
963 ipsec_tunnel_protect_init (vlib_main_t *vm)
968 clib_bihash_init_24_16 (&im->tun6_protect_by_key,
969 "IPSec IPv6 tunnels",
970 IPSEC_TUN_DEFAULT_HASH_NUM_BUCKETS,
971 IPSEC_TUN_DEFAULT_HASH_MEMORY_SIZE);
972 clib_bihash_init_8_16 (&im->tun4_protect_by_key,
973 "IPSec IPv4 tunnels",
974 IPSEC_TUN_DEFAULT_HASH_NUM_BUCKETS,
975 IPSEC_TUN_DEFAULT_HASH_MEMORY_SIZE);
977 ipsec_tun_adj_delegate_type =
978 adj_delegate_register_new_type (&ipsec_tun_adj_delegate_vft);
980 ipsec_tun_protect_logger = vlib_log_register_class ("ipsec", "tun");
982 teib_register (&ipsec_tun_teib_vft);
984 vnet_feature_register (ipsec_tun_feature_update, NULL);
989 VLIB_INIT_FUNCTION (ipsec_tunnel_protect_init);
992 * fd.io coding-style-patch-verification: ON
995 * eval: (c-set-style "gnu")