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Neale Rannsc87b66c2019-02-07 07:26:12 -08001/*
2 * ipsec_tun.h : IPSEC tunnel protection
3 *
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:
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
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.
16 */
17
18#include <vnet/ipsec/ipsec_tun.h>
Neale Rannsdd4ccf22020-06-30 07:47:14 +000019#include <vnet/ipsec/ipsec_itf.h>
Neale Rannsc87b66c2019-02-07 07:26:12 -080020#include <vnet/ipsec/esp.h>
Florin Corasb040f982020-10-20 14:59:43 -070021#include <vnet/udp/udp_local.h>
Neale Ranns28287212019-12-16 00:53:11 +000022#include <vnet/adj/adj_delegate.h>
Neale Ranns4ec36c52020-03-31 09:21:29 -040023#include <vnet/adj/adj_midchain.h>
Neale Ranns28287212019-12-16 00:53:11 +000024#include <vnet/teib/teib.h>
25
Neale Ranns302b25a2020-10-19 13:23:33 +000026/* instantiate the bihash functions */
27#include <vppinfra/bihash_8_16.h>
28#include <vppinfra/bihash_template.c>
29#include <vppinfra/bihash_24_16.h>
30#include <vppinfra/bihash_template.c>
31
Neale Ranns7b4e52f2020-05-24 16:17:50 +000032#define IPSEC_TUN_DEFAULT_HASH_NUM_BUCKETS (64 * 1024)
33#define IPSEC_TUN_DEFAULT_HASH_MEMORY_SIZE 512 << 20
34
Neale Ranns28287212019-12-16 00:53:11 +000035/**
36 * The logger
37 */
38vlib_log_class_t ipsec_tun_protect_logger;
Neale Rannsc87b66c2019-02-07 07:26:12 -080039
40/**
41 * Pool of tunnel protection objects
42 */
Neale Ranns28287212019-12-16 00:53:11 +000043ipsec_tun_protect_t *ipsec_tun_protect_pool;
Neale Rannsc87b66c2019-02-07 07:26:12 -080044
45/**
Neale Ranns28287212019-12-16 00:53:11 +000046 * Adj delegate registered type
Neale Rannsc87b66c2019-02-07 07:26:12 -080047 */
Neale Ranns28287212019-12-16 00:53:11 +000048static adj_delegate_type_t ipsec_tun_adj_delegate_type;
Neale Rannsc87b66c2019-02-07 07:26:12 -080049
Neale Ranns28287212019-12-16 00:53:11 +000050/**
51 * Adj index to TX SA mapping
52 */
53index_t *ipsec_tun_protect_sa_by_adj_index;
54
55const ip_address_t IP_ADDR_ALL_0 = IP_ADDRESS_V4_ALL_0S;
56
57/**
58 * The DB of all added per-nh tunnel protectiond
59 */
60typedef struct ipsec_tun_protect_itf_db_t_
61{
62 /** A hash table key'd on IP (4 or 6) address */
63 uword *id_hash;
64 /** If the interface is P2P then there is only one protect
65 * object associated with the auto-adj for each NH proto */
66 index_t id_itp;
67} ipsec_tun_protect_itf_db_t;
68
69typedef struct ipsec_tun_protect_db_t_
70{
71 /** Per-interface vector */
72 ipsec_tun_protect_itf_db_t *id_itf;
73} ipsec_tun_protect_db_t;
74
75static ipsec_tun_protect_db_t itp_db;
76
77const static ipsec_tun_protect_itf_db_t IPSEC_TUN_PROTECT_DEFAULT_DB_ENTRY = {
78 .id_itp = INDEX_INVALID,
79};
80
81#define ITP_DBG(_itp, _fmt, _args...) \
82{ \
83 vlib_log_debug(ipsec_tun_protect_logger, \
84 "[%U]: " _fmt, \
85 format_ipsec_tun_protect, \
86 _itp, ##_args); \
87}
88
89#define ITP_DBG2(_fmt, _args...) \
90{ \
91 vlib_log_debug(ipsec_tun_protect_logger, \
92 _fmt, ##_args); \
93}
94
Neale Ranns8d6d74c2020-02-20 09:45:16 +000095static u32 ipsec_tun_node_regs[N_AF];
96
97void
98ipsec_tun_register_nodes (ip_address_family_t af)
99{
100 if (0 == ipsec_tun_node_regs[af]++)
101 {
102 if (AF_IP4 == af)
103 {
Neale Rannsabc56602020-04-01 09:45:23 +0000104 ipsec_register_udp_port (UDP_DST_PORT_ipsec);
Neale Ranns8d6d74c2020-02-20 09:45:16 +0000105 ip4_register_protocol (IP_PROTOCOL_IPSEC_ESP,
106 ipsec4_tun_input_node.index);
107 }
108 else
109 ip6_register_protocol (IP_PROTOCOL_IPSEC_ESP,
110 ipsec6_tun_input_node.index);
111 }
112}
113
114void
115ipsec_tun_unregister_nodes (ip_address_family_t af)
116{
117 ASSERT (0 != ipsec_tun_node_regs[af]);
118 if (0 == --ipsec_tun_node_regs[af])
119 {
120 if (AF_IP4 == af)
121 {
Neale Rannsabc56602020-04-01 09:45:23 +0000122 ipsec_unregister_udp_port (UDP_DST_PORT_ipsec);
Neale Ranns8d6d74c2020-02-20 09:45:16 +0000123 ip4_unregister_protocol (IP_PROTOCOL_IPSEC_ESP);
124 }
125 else
126 ip6_unregister_protocol (IP_PROTOCOL_IPSEC_ESP);
127 }
128}
129
Neale Ranns28287212019-12-16 00:53:11 +0000130static inline const ipsec_tun_protect_t *
131ipsec_tun_protect_from_const_base (const adj_delegate_t * ad)
132{
133 if (ad == NULL)
134 return (NULL);
135 return (pool_elt_at_index (ipsec_tun_protect_pool, ad->ad_index));
136}
Neale Rannsc87b66c2019-02-07 07:26:12 -0800137
Neale Ranns4ec36c52020-03-31 09:21:29 -0400138static u32
Neale Rannsdd4ccf22020-06-30 07:47:14 +0000139ipsec_tun_protect_get_adj_next (vnet_link_t linkt,
140 const ipsec_tun_protect_t * itp)
Neale Rannsc87b66c2019-02-07 07:26:12 -0800141{
Neale Ranns4ec36c52020-03-31 09:21:29 -0400142 ipsec_main_t *im;
143 ipsec_sa_t *sa;
144 bool is_ip4;
145 u32 next;
Neale Rannsc87b66c2019-02-07 07:26:12 -0800146
Neale Rannsdd4ccf22020-06-30 07:47:14 +0000147
148 if (itp->itp_flags & IPSEC_PROTECT_ITF)
149 is_ip4 = linkt == VNET_LINK_IP4;
150 else
151 is_ip4 = ip46_address_is_ip4 (&itp->itp_tun.src);
152
Neale Ranns4ec36c52020-03-31 09:21:29 -0400153 sa = ipsec_sa_get (itp->itp_out_sa);
154 im = &ipsec_main;
155
Neale Ranns970187b2020-10-07 13:58:56 +0000156 if ((sa->crypto_alg == IPSEC_CRYPTO_ALG_NONE &&
157 sa->integ_alg == IPSEC_INTEG_ALG_NONE) &&
158 !(itp->itp_flags & IPSEC_PROTECT_ITF))
Neale Ranns4ec36c52020-03-31 09:21:29 -0400159 next = (is_ip4 ?
160 im->esp4_no_crypto_tun_node_index :
161 im->esp6_no_crypto_tun_node_index);
162 else if (itp->itp_flags & IPSEC_PROTECT_L2)
163 next = (is_ip4 ?
164 im->esp4_encrypt_l2_tun_node_index :
165 im->esp6_encrypt_l2_tun_node_index);
166 else
167 next = (is_ip4 ?
168 im->esp4_encrypt_tun_node_index :
169 im->esp6_encrypt_tun_node_index);
170
171 return (next);
172}
173
174static void
175ipsec_tun_protect_add_adj (adj_index_t ai, const ipsec_tun_protect_t * itp)
176{
177 vec_validate_init_empty (ipsec_tun_protect_sa_by_adj_index, ai,
178 INDEX_INVALID);
179
180 if (NULL == itp)
Neale Rannsc87b66c2019-02-07 07:26:12 -0800181 {
Neale Ranns4ec36c52020-03-31 09:21:29 -0400182 ipsec_tun_protect_sa_by_adj_index[ai] = INDEX_INVALID;
183 adj_nbr_midchain_reset_next_node (ai);
Neale Rannsc87b66c2019-02-07 07:26:12 -0800184 }
185 else
186 {
Neale Ranns4ec36c52020-03-31 09:21:29 -0400187 ipsec_tun_protect_sa_by_adj_index[ai] = itp->itp_out_sa;
188 adj_nbr_midchain_update_next_node
Neale Rannsdd4ccf22020-06-30 07:47:14 +0000189 (ai, ipsec_tun_protect_get_adj_next (adj_get_link_type (ai), itp));
Neale Rannsc87b66c2019-02-07 07:26:12 -0800190 }
Neale Rannsc87b66c2019-02-07 07:26:12 -0800191}
192
Neale Ranns28287212019-12-16 00:53:11 +0000193static index_t
194ipsec_tun_protect_find (u32 sw_if_index, const ip_address_t * nh)
195{
196 ipsec_tun_protect_itf_db_t *idi;
197 uword *p;
198
199 if (vec_len (itp_db.id_itf) <= sw_if_index)
200 return INDEX_INVALID;
201
202 if (vnet_sw_interface_is_p2p (vnet_get_main (), sw_if_index))
203 return (itp_db.id_itf[sw_if_index].id_itp);
204
205 idi = &itp_db.id_itf[sw_if_index];
206 p = hash_get_mem (idi->id_hash, nh);
207
208 if (NULL == p)
209 {
210 return INDEX_INVALID;
211 }
212 return (p[0]);
213}
214
Neale Rannsc87b66c2019-02-07 07:26:12 -0800215static void
Neale Ranns28287212019-12-16 00:53:11 +0000216ipsec_tun_protect_rx_db_add (ipsec_main_t * im,
217 const ipsec_tun_protect_t * itp)
Neale Rannsc87b66c2019-02-07 07:26:12 -0800218{
219 const ipsec_sa_t *sa;
220 u32 sai;
221
Neale Ranns28287212019-12-16 00:53:11 +0000222 if (ip46_address_is_zero (&itp->itp_crypto.dst))
223 return;
224
Neale Rannsc87b66c2019-02-07 07:26:12 -0800225 /* *INDENT-OFF* */
226 FOR_EACH_IPSEC_PROTECT_INPUT_SAI(itp, sai,
227 ({
228 sa = ipsec_sa_get (sai);
229
230 ipsec_tun_lkup_result_t res = {
Neale Ranns28287212019-12-16 00:53:11 +0000231 .tun_index = itp - ipsec_tun_protect_pool,
Neale Rannsc87b66c2019-02-07 07:26:12 -0800232 .sa_index = sai,
Neale Ranns302b25a2020-10-19 13:23:33 +0000233 .flags = itp->itp_flags,
234 .sw_if_index = itp->itp_sw_if_index,
Neale Rannsc87b66c2019-02-07 07:26:12 -0800235 };
236
237 /*
238 * The key is formed from the tunnel's destination
239 * as the packet lookup is done from the packet's source
240 */
241 if (ip46_address_is_ip4 (&itp->itp_crypto.dst))
242 {
Neale Ranns7b4e52f2020-05-24 16:17:50 +0000243 ipsec4_tunnel_kv_t key = {
244 .value = res,
Neale Rannsc87b66c2019-02-07 07:26:12 -0800245 };
Neale Ranns302b25a2020-10-19 13:23:33 +0000246 clib_bihash_kv_8_16_t *bkey = (clib_bihash_kv_8_16_t*)&key;
Neale Ranns7b4e52f2020-05-24 16:17:50 +0000247
248 ipsec4_tunnel_mk_key(&key, &itp->itp_crypto.dst.ip4,
249 clib_host_to_net_u32 (sa->spi));
250
251 if (!im->tun4_protect_by_key.nbuckets)
Neale Ranns302b25a2020-10-19 13:23:33 +0000252 clib_bihash_init_8_16 (&im->tun4_protect_by_key,
Neale Ranns7b4e52f2020-05-24 16:17:50 +0000253 "IPSec IPv4 tunnels",
254 IPSEC_TUN_DEFAULT_HASH_NUM_BUCKETS,
255 IPSEC_TUN_DEFAULT_HASH_MEMORY_SIZE);
256
Neale Ranns302b25a2020-10-19 13:23:33 +0000257 clib_bihash_add_del_8_16 (&im->tun4_protect_by_key, bkey, 1);
Neale Ranns8d6d74c2020-02-20 09:45:16 +0000258 ipsec_tun_register_nodes(AF_IP4);
Neale Rannsc87b66c2019-02-07 07:26:12 -0800259 }
260 else
261 {
Neale Ranns7b4e52f2020-05-24 16:17:50 +0000262 ipsec6_tunnel_kv_t key = {
263 .key = {
264 .remote_ip = itp->itp_crypto.dst.ip6,
265 .spi = clib_host_to_net_u32 (sa->spi),
266 },
267 .value = res,
Neale Rannsc87b66c2019-02-07 07:26:12 -0800268 };
Neale Ranns302b25a2020-10-19 13:23:33 +0000269 clib_bihash_kv_24_16_t *bkey = (clib_bihash_kv_24_16_t*)&key;
Neale Ranns7b4e52f2020-05-24 16:17:50 +0000270
271 if (!im->tun4_protect_by_key.nbuckets)
Neale Ranns302b25a2020-10-19 13:23:33 +0000272 clib_bihash_init_24_16 (&im->tun6_protect_by_key,
Neale Ranns7b4e52f2020-05-24 16:17:50 +0000273 "IPSec IPv6 tunnels",
274 IPSEC_TUN_DEFAULT_HASH_NUM_BUCKETS,
275 IPSEC_TUN_DEFAULT_HASH_MEMORY_SIZE);
Neale Ranns302b25a2020-10-19 13:23:33 +0000276 clib_bihash_add_del_24_16 (&im->tun6_protect_by_key, bkey, 1);
Neale Ranns8d6d74c2020-02-20 09:45:16 +0000277 ipsec_tun_register_nodes(AF_IP6);
Neale Rannsc87b66c2019-02-07 07:26:12 -0800278 }
279 }))
280 /* *INDENT-ON* */
281}
282
Neale Ranns28287212019-12-16 00:53:11 +0000283static adj_walk_rc_t
284ipsec_tun_protect_adj_add (adj_index_t ai, void *arg)
285{
286 ipsec_tun_protect_t *itp = arg;
287 adj_delegate_add (adj_get (ai), ipsec_tun_adj_delegate_type,
288 itp - ipsec_tun_protect_pool);
Neale Ranns4ec36c52020-03-31 09:21:29 -0400289 ipsec_tun_protect_add_adj (ai, itp);
Neale Ranns28287212019-12-16 00:53:11 +0000290
Neale Rannsdd4ccf22020-06-30 07:47:14 +0000291 if (itp->itp_flags & IPSEC_PROTECT_ITF)
292 ipsec_itf_adj_stack (ai, itp->itp_out_sa);
293
Neale Ranns28287212019-12-16 00:53:11 +0000294 return (ADJ_WALK_RC_CONTINUE);
295}
296
Neale Rannsc87b66c2019-02-07 07:26:12 -0800297static void
Neale Ranns28287212019-12-16 00:53:11 +0000298ipsec_tun_protect_tx_db_add (ipsec_tun_protect_t * itp)
299{
300 /*
301 * add the delegate to the adj
302 */
303 ipsec_tun_protect_itf_db_t *idi;
304 fib_protocol_t nh_proto;
305 ip46_address_t nh;
306
307 vec_validate_init_empty (itp_db.id_itf,
308 itp->itp_sw_if_index,
309 IPSEC_TUN_PROTECT_DEFAULT_DB_ENTRY);
310
311 idi = &itp_db.id_itf[itp->itp_sw_if_index];
312
313 if (vnet_sw_interface_is_p2p (vnet_get_main (), itp->itp_sw_if_index))
314 {
315 if (INDEX_INVALID == idi->id_itp)
316 {
Neale Ranns4ec36c52020-03-31 09:21:29 -0400317 // ipsec_tun_protect_feature_set (itp, 1);
Neale Ranns28287212019-12-16 00:53:11 +0000318 }
319 idi->id_itp = itp - ipsec_tun_protect_pool;
320
321 FOR_EACH_FIB_IP_PROTOCOL (nh_proto)
322 adj_nbr_walk (itp->itp_sw_if_index,
323 nh_proto, ipsec_tun_protect_adj_add, itp);
324 }
325 else
326 {
327 if (NULL == idi->id_hash)
328 {
329 idi->id_hash =
330 hash_create_mem (0, sizeof (ip_address_t), sizeof (uword));
331 /*
332 * enable the encrypt feature for egress if this is the first addition
333 * on this interface
334 */
Neale Ranns4ec36c52020-03-31 09:21:29 -0400335 // ipsec_tun_protect_feature_set (itp, 1);
Neale Ranns28287212019-12-16 00:53:11 +0000336 }
337
338 hash_set_mem (idi->id_hash, itp->itp_key, itp - ipsec_tun_protect_pool);
339
340 /*
341 * walk all the adjs with the same nh on this interface
342 * to associate them with this protection
343 */
344 nh_proto = ip_address_to_46 (itp->itp_key, &nh);
345
346 adj_nbr_walk_nh (itp->itp_sw_if_index,
347 nh_proto, &nh, ipsec_tun_protect_adj_add, itp);
Neale Ranns8d6d74c2020-02-20 09:45:16 +0000348
349 ipsec_tun_register_nodes (FIB_PROTOCOL_IP6 == nh_proto ?
350 AF_IP6 : AF_IP4);
Neale Ranns28287212019-12-16 00:53:11 +0000351 }
352}
353
354static void
355ipsec_tun_protect_rx_db_remove (ipsec_main_t * im,
356 const ipsec_tun_protect_t * itp)
Neale Rannsc87b66c2019-02-07 07:26:12 -0800357{
358 const ipsec_sa_t *sa;
359
360 /* *INDENT-OFF* */
361 FOR_EACH_IPSEC_PROTECT_INPUT_SA(itp, sa,
362 ({
Neale Ranns4ec36c52020-03-31 09:21:29 -0400363 if (ip46_address_is_ip4 (&itp->itp_crypto.dst))
364 {
Neale Ranns7b4e52f2020-05-24 16:17:50 +0000365 ipsec4_tunnel_kv_t key;
Neale Ranns302b25a2020-10-19 13:23:33 +0000366 clib_bihash_kv_8_16_t res, *bkey = (clib_bihash_kv_8_16_t*)&key;
Neale Ranns7b4e52f2020-05-24 16:17:50 +0000367
368 ipsec4_tunnel_mk_key(&key, &itp->itp_crypto.dst.ip4,
369 clib_host_to_net_u32 (sa->spi));
370
Neale Ranns302b25a2020-10-19 13:23:33 +0000371 if (!clib_bihash_search_8_16 (&im->tun4_protect_by_key, bkey, &res))
Neale Ranns7b4e52f2020-05-24 16:17:50 +0000372 {
Neale Ranns302b25a2020-10-19 13:23:33 +0000373 clib_bihash_add_del_8_16 (&im->tun4_protect_by_key, bkey, 0);
Neale Ranns7b4e52f2020-05-24 16:17:50 +0000374 ipsec_tun_unregister_nodes(AF_IP4);
375 }
Neale Ranns4ec36c52020-03-31 09:21:29 -0400376 }
377 else
378 {
Neale Ranns7b4e52f2020-05-24 16:17:50 +0000379 ipsec6_tunnel_kv_t key = {
380 .key = {
381 .remote_ip = itp->itp_crypto.dst.ip6,
382 .spi = clib_host_to_net_u32 (sa->spi),
383 },
Neale Ranns4ec36c52020-03-31 09:21:29 -0400384 };
Neale Ranns302b25a2020-10-19 13:23:33 +0000385 clib_bihash_kv_24_16_t res, *bkey = (clib_bihash_kv_24_16_t*)&key;
Neale Ranns7b4e52f2020-05-24 16:17:50 +0000386
Neale Ranns302b25a2020-10-19 13:23:33 +0000387 if (!clib_bihash_search_24_16 (&im->tun6_protect_by_key, bkey, &res))
Neale Ranns4ec36c52020-03-31 09:21:29 -0400388 {
Neale Ranns302b25a2020-10-19 13:23:33 +0000389 clib_bihash_add_del_24_16 (&im->tun6_protect_by_key, bkey, 0);
Neale Ranns4ec36c52020-03-31 09:21:29 -0400390 ipsec_tun_unregister_nodes(AF_IP6);
391 }
392 }
393 }));
Neale Rannsc87b66c2019-02-07 07:26:12 -0800394 /* *INDENT-ON* */
395}
396
Neale Ranns28287212019-12-16 00:53:11 +0000397static adj_walk_rc_t
398ipsec_tun_protect_adj_remove (adj_index_t ai, void *arg)
399{
Neale Rannsdd4ccf22020-06-30 07:47:14 +0000400 ipsec_tun_protect_t *itp = arg;
401
Neale Ranns28287212019-12-16 00:53:11 +0000402 adj_delegate_remove (ai, ipsec_tun_adj_delegate_type);
Neale Ranns4ec36c52020-03-31 09:21:29 -0400403 ipsec_tun_protect_add_adj (ai, NULL);
Neale Ranns28287212019-12-16 00:53:11 +0000404
Neale Rannsdd4ccf22020-06-30 07:47:14 +0000405 if (itp->itp_flags & IPSEC_PROTECT_ITF)
406 ipsec_itf_adj_unstack (ai);
407
Neale Ranns28287212019-12-16 00:53:11 +0000408 return (ADJ_WALK_RC_CONTINUE);
409}
410
Neale Rannsc87b66c2019-02-07 07:26:12 -0800411static void
Neale Ranns28287212019-12-16 00:53:11 +0000412ipsec_tun_protect_tx_db_remove (ipsec_tun_protect_t * itp)
413{
414 ipsec_tun_protect_itf_db_t *idi;
415 fib_protocol_t nh_proto;
416 ip46_address_t nh;
417
418 nh_proto = ip_address_to_46 (itp->itp_key, &nh);
419 idi = &itp_db.id_itf[itp->itp_sw_if_index];
420
421 if (vnet_sw_interface_is_p2p (vnet_get_main (), itp->itp_sw_if_index))
422 {
Neale Ranns4ec36c52020-03-31 09:21:29 -0400423 // ipsec_tun_protect_feature_set (itp, 0);
Neale Ranns28287212019-12-16 00:53:11 +0000424 idi->id_itp = INDEX_INVALID;
425
426 FOR_EACH_FIB_IP_PROTOCOL (nh_proto)
427 adj_nbr_walk (itp->itp_sw_if_index,
428 nh_proto, ipsec_tun_protect_adj_remove, itp);
429 }
430 else
431 {
432 adj_nbr_walk_nh (itp->itp_sw_if_index,
433 nh_proto, &nh, ipsec_tun_protect_adj_remove, itp);
434
435 hash_unset_mem (idi->id_hash, itp->itp_key);
436
437 if (0 == hash_elts (idi->id_hash))
438 {
Neale Ranns4ec36c52020-03-31 09:21:29 -0400439 // ipsec_tun_protect_feature_set (itp, 0);
Neale Ranns28287212019-12-16 00:53:11 +0000440 hash_free (idi->id_hash);
441 idi->id_hash = NULL;
442 }
Neale Ranns8d6d74c2020-02-20 09:45:16 +0000443 ipsec_tun_unregister_nodes (FIB_PROTOCOL_IP6 == nh_proto ?
444 AF_IP6 : AF_IP4);
Neale Ranns28287212019-12-16 00:53:11 +0000445 }
446}
447
448static void
449ipsec_tun_protect_set_crypto_addr (ipsec_tun_protect_t * itp)
Neale Rannsc87b66c2019-02-07 07:26:12 -0800450{
451 ipsec_sa_t *sa;
Neale Ranns12989b52019-09-26 16:20:19 +0000452
Neale Rannsc87b66c2019-02-07 07:26:12 -0800453 /* *INDENT-OFF* */
454 FOR_EACH_IPSEC_PROTECT_INPUT_SA(itp, sa,
455 ({
456 if (ipsec_sa_is_set_IS_TUNNEL (sa))
457 {
458 itp->itp_crypto.src = sa->tunnel_dst_addr;
459 itp->itp_crypto.dst = sa->tunnel_src_addr;
Neale Rannsdd4ccf22020-06-30 07:47:14 +0000460 if (!(itp->itp_flags & IPSEC_PROTECT_ITF))
461 {
462 ipsec_sa_set_IS_PROTECT (sa);
463 itp->itp_flags |= IPSEC_PROTECT_ENCAPED;
464 }
Neale Rannsc87b66c2019-02-07 07:26:12 -0800465 }
466 else
467 {
468 itp->itp_crypto.src = itp->itp_tun.src;
469 itp->itp_crypto.dst = itp->itp_tun.dst;
470 itp->itp_flags &= ~IPSEC_PROTECT_ENCAPED;
471 }
472 }));
473 /* *INDENT-ON* */
Neale Ranns28287212019-12-16 00:53:11 +0000474}
475
476static void
477ipsec_tun_protect_config (ipsec_main_t * im,
478 ipsec_tun_protect_t * itp, u32 sa_out, u32 * sas_in)
479{
480 index_t sai;
481 u32 ii;
482
483 itp->itp_n_sa_in = vec_len (sas_in);
484 for (ii = 0; ii < itp->itp_n_sa_in; ii++)
485 itp->itp_in_sas[ii] = sas_in[ii];
486 itp->itp_out_sa = sa_out;
487
488 ipsec_sa_lock (itp->itp_out_sa);
489
490 /* *INDENT-OFF* */
491 FOR_EACH_IPSEC_PROTECT_INPUT_SAI(itp, sai,
492 ({
493 ipsec_sa_lock(sai);
494 }));
495 ipsec_tun_protect_set_crypto_addr(itp);
496 /* *INDENT-ON* */
Neale Rannsc87b66c2019-02-07 07:26:12 -0800497
498 /*
499 * add to the DB against each SA
500 */
Neale Ranns28287212019-12-16 00:53:11 +0000501 ipsec_tun_protect_rx_db_add (im, itp);
502 ipsec_tun_protect_tx_db_add (itp);
Neale Rannsc87b66c2019-02-07 07:26:12 -0800503
Neale Ranns28287212019-12-16 00:53:11 +0000504 ITP_DBG (itp, "configured");
Neale Rannsc87b66c2019-02-07 07:26:12 -0800505}
506
507static void
508ipsec_tun_protect_unconfig (ipsec_main_t * im, ipsec_tun_protect_t * itp)
509{
510 ipsec_sa_t *sa;
Neale Ranns495d7ff2019-07-12 09:15:26 +0000511 index_t sai;
Neale Rannsc87b66c2019-02-07 07:26:12 -0800512
Neale Rannsc87b66c2019-02-07 07:26:12 -0800513 /* *INDENT-OFF* */
514 FOR_EACH_IPSEC_PROTECT_INPUT_SA(itp, sa,
515 ({
516 ipsec_sa_unset_IS_PROTECT (sa);
517 }));
Neale Rannsc87b66c2019-02-07 07:26:12 -0800518
Neale Ranns28287212019-12-16 00:53:11 +0000519 ipsec_tun_protect_rx_db_remove (im, itp);
520 ipsec_tun_protect_tx_db_remove (itp);
Neale Ranns495d7ff2019-07-12 09:15:26 +0000521
522 ipsec_sa_unlock(itp->itp_out_sa);
523
524 FOR_EACH_IPSEC_PROTECT_INPUT_SAI(itp, sai,
525 ({
526 ipsec_sa_unlock(sai);
527 }));
528 /* *INDENT-ON* */
Neale Ranns28287212019-12-16 00:53:11 +0000529 ITP_DBG (itp, "unconfigured");
Neale Rannsc87b66c2019-02-07 07:26:12 -0800530}
531
Neale Ranns28287212019-12-16 00:53:11 +0000532static void
533ipsec_tun_protect_update_from_teib (ipsec_tun_protect_t * itp,
534 const teib_entry_t * ne)
535{
536 if (NULL != ne)
537 {
538 const fib_prefix_t *pfx;
539
540 pfx = teib_entry_get_nh (ne);
541
542 ip46_address_copy (&itp->itp_tun.dst, &pfx->fp_addr);
543 }
544 else
545 ip46_address_reset (&itp->itp_tun.dst);
546}
547
Neale Ranns12989b52019-09-26 16:20:19 +0000548int
Neale Ranns28287212019-12-16 00:53:11 +0000549ipsec_tun_protect_update (u32 sw_if_index,
550 const ip_address_t * nh, u32 sa_out, u32 * sas_in)
Neale Rannsc87b66c2019-02-07 07:26:12 -0800551{
Neale Rannsc87b66c2019-02-07 07:26:12 -0800552 ipsec_tun_protect_t *itp;
Neale Ranns12989b52019-09-26 16:20:19 +0000553 u32 itpi, ii, *saip;
Neale Rannsc87b66c2019-02-07 07:26:12 -0800554 ipsec_main_t *im;
555 int rv;
556
Neale Ranns28287212019-12-16 00:53:11 +0000557 ITP_DBG2 ("update: %U/%U",
558 format_vnet_sw_if_index_name, vnet_get_main (), sw_if_index,
559 format_ip_address, nh);
560
Matthew Smithdc3e9662020-04-10 20:27:33 -0500561 if (vec_len (sas_in) > ITP_MAX_N_SA_IN)
562 {
563 rv = VNET_API_ERROR_LIMIT_EXCEEDED;
564 goto out;
565 }
566
Neale Rannsc87b66c2019-02-07 07:26:12 -0800567 rv = 0;
568 im = &ipsec_main;
Neale Ranns28287212019-12-16 00:53:11 +0000569 if (NULL == nh)
570 nh = &IP_ADDR_ALL_0;
571 itpi = ipsec_tun_protect_find (sw_if_index, nh);
Neale Rannsc87b66c2019-02-07 07:26:12 -0800572
573 vec_foreach_index (ii, sas_in)
574 {
Neale Ranns495d7ff2019-07-12 09:15:26 +0000575 sas_in[ii] = ipsec_sa_find_and_lock (sas_in[ii]);
Neale Rannsc87b66c2019-02-07 07:26:12 -0800576 if (~0 == sas_in[ii])
577 {
578 rv = VNET_API_ERROR_INVALID_VALUE;
579 goto out;
580 }
581 }
582
Neale Ranns495d7ff2019-07-12 09:15:26 +0000583 sa_out = ipsec_sa_find_and_lock (sa_out);
Neale Rannsc87b66c2019-02-07 07:26:12 -0800584
585 if (~0 == sa_out)
586 {
587 rv = VNET_API_ERROR_INVALID_VALUE;
588 goto out;
589 }
590
591 if (INDEX_INVALID == itpi)
592 {
593 vnet_device_class_t *dev_class;
594 vnet_hw_interface_t *hi;
595 vnet_main_t *vnm;
596 u8 is_l2;
597
598 vnm = vnet_get_main ();
599 hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
600 dev_class = vnet_get_device_class (vnm, hi->dev_class_index);
601
602 if (NULL == dev_class->ip_tun_desc)
603 {
604 rv = VNET_API_ERROR_INVALID_SW_IF_INDEX;
605 goto out;
606 }
607
Neale Ranns28287212019-12-16 00:53:11 +0000608 pool_get_zero (ipsec_tun_protect_pool, itp);
Neale Rannsc87b66c2019-02-07 07:26:12 -0800609
610 itp->itp_sw_if_index = sw_if_index;
Neale Rannsdd4ccf22020-06-30 07:47:14 +0000611 itp->itp_ai = ADJ_INDEX_INVALID;
Neale Rannsc87b66c2019-02-07 07:26:12 -0800612
613 itp->itp_n_sa_in = vec_len (sas_in);
614 for (ii = 0; ii < itp->itp_n_sa_in; ii++)
615 itp->itp_in_sas[ii] = sas_in[ii];
616 itp->itp_out_sa = sa_out;
617
Neale Ranns28287212019-12-16 00:53:11 +0000618 itp->itp_key = clib_mem_alloc (sizeof (*itp->itp_key));
619 ip_address_copy (itp->itp_key, nh);
620
Neale Rannsc87b66c2019-02-07 07:26:12 -0800621 rv = dev_class->ip_tun_desc (sw_if_index,
622 &itp->itp_tun.src,
623 &itp->itp_tun.dst, &is_l2);
624
625 if (rv)
626 goto out;
627
Neale Rannsdd4ccf22020-06-30 07:47:14 +0000628 if (ip46_address_is_zero (&itp->itp_tun.src))
629 {
Neale Ranns6ba4e412020-10-19 09:59:41 +0000630 /*
631 * must be one of those pesky ipsec interfaces that has no encap.
632 * the encap then MUST come from the tunnel mode SA.
Neale Rannsdd4ccf22020-06-30 07:47:14 +0000633 */
634 ipsec_sa_t *sa;
635
636 sa = ipsec_sa_get (itp->itp_out_sa);
637
638 if (!ipsec_sa_is_set_IS_TUNNEL (sa))
639 {
640 rv = VNET_API_ERROR_INVALID_DST_ADDRESS;
641 goto out;
642 }
643
644 itp->itp_flags |= IPSEC_PROTECT_ITF;
645 }
646 else if (ip46_address_is_zero (&itp->itp_tun.dst))
Neale Ranns28287212019-12-16 00:53:11 +0000647 {
648 /* tunnel has no destination address, presumably because it's p2mp
649 in which case we use the nh that this is protection for */
Neale Ranns28287212019-12-16 00:53:11 +0000650 ipsec_tun_protect_update_from_teib
Neale Rannse6b83052020-09-17 12:56:47 +0000651 (itp, teib_entry_find (sw_if_index, nh));
Neale Ranns28287212019-12-16 00:53:11 +0000652 }
653
Neale Rannsc87b66c2019-02-07 07:26:12 -0800654 if (is_l2)
655 itp->itp_flags |= IPSEC_PROTECT_L2;
656
657 /*
658 * add to the tunnel DB for ingress
Neale Rannsdd4ccf22020-06-30 07:47:14 +0000659 * - if the SA is in trasnport mode, then the packates will arrive
Neale Rannsc87b66c2019-02-07 07:26:12 -0800660 * with the IP src,dst of the protected tunnel, in which case we can
661 * simply strip the IP header and hand the payload to the protocol
662 * appropriate input handler
663 * - if the SA is in tunnel mode then there are two IP headers present
664 * one for the crytpo tunnel endpoints (described in the SA) and one
665 * for the tunnel endpoints. The outer IP headers in the srriving
666 * packets will have the crypto endpoints. So the DB needs to contain
667 * the crpto endpoint. Once the crypto header is stripped, revealing,
668 * the tunnel-IP we have 2 choices:
669 * 1) do a tunnel lookup based on the revealed header
670 * 2) skip the tunnel lookup and assume that the packet matches the
671 * one that is protected here.
672 * If we did 1) then we would allow our peer to use the SA for tunnel
673 * X to inject traffic onto tunnel Y, this is not good. If we do 2)
674 * then we don't verify that the peer is indeed using SA for tunnel
675 * X and addressing tunnel X. So we take a compromise, once the SA
676 * matches to tunnel X we veriy that the inner IP matches the value
677 * of the tunnel we are protecting, else it's dropped.
678 */
679 ipsec_tun_protect_config (im, itp, sa_out, sas_in);
Neale Rannsc87b66c2019-02-07 07:26:12 -0800680 }
681 else
682 {
683 /* updating SAs only */
Neale Ranns28287212019-12-16 00:53:11 +0000684 itp = pool_elt_at_index (ipsec_tun_protect_pool, itpi);
Neale Rannsc87b66c2019-02-07 07:26:12 -0800685
686 ipsec_tun_protect_unconfig (im, itp);
687 ipsec_tun_protect_config (im, itp, sa_out, sas_in);
688 }
689
Neale Ranns12989b52019-09-26 16:20:19 +0000690 ipsec_sa_unlock (sa_out);
691 vec_foreach (saip, sas_in) ipsec_sa_unlock (*saip);
Neale Rannsc87b66c2019-02-07 07:26:12 -0800692 vec_free (sas_in);
Neale Ranns12989b52019-09-26 16:20:19 +0000693
Neale Rannsc87b66c2019-02-07 07:26:12 -0800694out:
695 return (rv);
696}
697
698int
Neale Ranns28287212019-12-16 00:53:11 +0000699ipsec_tun_protect_del (u32 sw_if_index, const ip_address_t * nh)
Neale Rannsc87b66c2019-02-07 07:26:12 -0800700{
701 ipsec_tun_protect_t *itp;
702 ipsec_main_t *im;
703 index_t itpi;
704
Neale Ranns28287212019-12-16 00:53:11 +0000705 ITP_DBG2 ("delete: %U/%U",
706 format_vnet_sw_if_index_name, vnet_get_main (), sw_if_index,
707 format_ip_address, nh);
Neale Rannsc87b66c2019-02-07 07:26:12 -0800708
Neale Ranns28287212019-12-16 00:53:11 +0000709 im = &ipsec_main;
710 if (NULL == nh)
711 nh = &IP_ADDR_ALL_0;
712
713 itpi = ipsec_tun_protect_find (sw_if_index, nh);
Neale Rannsc87b66c2019-02-07 07:26:12 -0800714
715 if (INDEX_INVALID == itpi)
716 return (VNET_API_ERROR_NO_SUCH_ENTRY);
717
718 itp = ipsec_tun_protect_get (itpi);
719 ipsec_tun_protect_unconfig (im, itp);
720
Neale Rannsdd4ccf22020-06-30 07:47:14 +0000721 if (ADJ_INDEX_INVALID != itp->itp_ai)
722 adj_unlock (itp->itp_ai);
723
Neale Ranns28287212019-12-16 00:53:11 +0000724 clib_mem_free (itp->itp_key);
725 pool_put (ipsec_tun_protect_pool, itp);
Neale Rannsc87b66c2019-02-07 07:26:12 -0800726
Neale Rannsc87b66c2019-02-07 07:26:12 -0800727 return (0);
728}
729
730void
731ipsec_tun_protect_walk (ipsec_tun_protect_walk_cb_t fn, void *ctx)
732{
733 index_t itpi;
734
735 /* *INDENT-OFF* */
Damjan Marionb2c31b62020-12-13 21:47:40 +0100736 pool_foreach_index (itpi, ipsec_tun_protect_pool)
737 {
Neale Rannsc87b66c2019-02-07 07:26:12 -0800738 fn (itpi, ctx);
Damjan Marionb2c31b62020-12-13 21:47:40 +0100739 }
Neale Rannsc87b66c2019-02-07 07:26:12 -0800740 /* *INDENT-ON* */
741}
742
Neale Ranns28287212019-12-16 00:53:11 +0000743void
744ipsec_tun_protect_walk_itf (u32 sw_if_index,
745 ipsec_tun_protect_walk_cb_t fn, void *ctx)
746{
747 ipsec_tun_protect_itf_db_t *idi;
748 ip_address_t *key;
749 index_t itpi;
750
751 if (vec_len (itp_db.id_itf) <= sw_if_index)
752 return;
753
754 idi = &itp_db.id_itf[sw_if_index];
755
756 /* *INDENT-OFF* */
757 hash_foreach(key, itpi, idi->id_hash,
758 ({
759 fn (itpi, ctx);
760 }));
761 /* *INDENT-ON* */
762 if (INDEX_INVALID != idi->id_itp)
763 fn (idi->id_itp, ctx);
764}
765
766static void
767ipsec_tun_protect_adj_delegate_adj_deleted (adj_delegate_t * ad)
768{
769 /* remove our delegate */
Neale Ranns4ec36c52020-03-31 09:21:29 -0400770 ipsec_tun_protect_add_adj (ad->ad_adj_index, NULL);
Benoît Ganneea9bc282020-04-16 12:40:04 +0200771 adj_delegate_remove (ad->ad_adj_index, ipsec_tun_adj_delegate_type);
Neale Ranns28287212019-12-16 00:53:11 +0000772}
773
774static void
Neale Ranns4ec36c52020-03-31 09:21:29 -0400775ipsec_tun_protect_adj_delegate_adj_modified (adj_delegate_t * ad)
776{
777 ipsec_tun_protect_add_adj (ad->ad_adj_index,
778 ipsec_tun_protect_get (ad->ad_index));
779}
780
781static void
Neale Ranns28287212019-12-16 00:53:11 +0000782ipsec_tun_protect_adj_delegate_adj_created (adj_index_t ai)
783{
784 /* add our delegate if there is protection for this neighbour */
785 ip_address_t ip = IP_ADDRESS_V4_ALL_0S;
786 ip_adjacency_t *adj;
787 index_t itpi;
788
Neale Ranns4ec36c52020-03-31 09:21:29 -0400789 if (!adj_is_midchain (ai))
Neale Ranns28287212019-12-16 00:53:11 +0000790 return;
791
Neale Ranns4ec36c52020-03-31 09:21:29 -0400792 adj = adj_get (ai);
793
Neale Ranns28287212019-12-16 00:53:11 +0000794 ip_address_from_46 (&adj->sub_type.midchain.next_hop,
795 adj->ia_nh_proto, &ip);
796
797 itpi = ipsec_tun_protect_find (adj->rewrite_header.sw_if_index, &ip);
798
799 if (INDEX_INVALID != itpi)
Neale Rannsdd4ccf22020-06-30 07:47:14 +0000800 ipsec_tun_protect_adj_add (ai, ipsec_tun_protect_get (itpi));
Neale Ranns28287212019-12-16 00:53:11 +0000801}
802
803static u8 *
804ipsec_tun_protect_adj_delegate_format (const adj_delegate_t * aed, u8 * s)
805{
806 const ipsec_tun_protect_t *itp;
807
808 itp = ipsec_tun_protect_from_const_base (aed);
809 s = format (s, "ipsec-tun-protect:\n%U", format_ipsec_tun_protect, itp);
810
811 return (s);
812}
813
814static void
815ipsec_tun_teib_entry_added (const teib_entry_t * ne)
816{
Neale Ranns28287212019-12-16 00:53:11 +0000817 ipsec_tun_protect_t *itp;
Neale Ranns28287212019-12-16 00:53:11 +0000818 index_t itpi;
819
Neale Rannse6b83052020-09-17 12:56:47 +0000820 itpi = ipsec_tun_protect_find (teib_entry_get_sw_if_index (ne),
821 teib_entry_get_peer (ne));
Neale Ranns28287212019-12-16 00:53:11 +0000822
823 if (INDEX_INVALID == itpi)
824 return;
825
826 itp = ipsec_tun_protect_get (itpi);
827 ipsec_tun_protect_rx_db_remove (&ipsec_main, itp);
828 ipsec_tun_protect_update_from_teib (itp, ne);
829 ipsec_tun_protect_set_crypto_addr (itp);
830 ipsec_tun_protect_rx_db_add (&ipsec_main, itp);
831
832 ITP_DBG (itp, "teib-added");
833}
834
835static void
836ipsec_tun_teib_entry_deleted (const teib_entry_t * ne)
837{
Neale Ranns28287212019-12-16 00:53:11 +0000838 ipsec_tun_protect_t *itp;
Neale Ranns28287212019-12-16 00:53:11 +0000839 index_t itpi;
840
Neale Rannse6b83052020-09-17 12:56:47 +0000841 itpi = ipsec_tun_protect_find (teib_entry_get_sw_if_index (ne),
842 teib_entry_get_peer (ne));
Neale Ranns28287212019-12-16 00:53:11 +0000843
844 if (INDEX_INVALID == itpi)
845 return;
846
847 itp = ipsec_tun_protect_get (itpi);
848 ipsec_tun_protect_rx_db_remove (&ipsec_main, itp);
849 ipsec_tun_protect_update_from_teib (itp, NULL);
850 ipsec_tun_protect_set_crypto_addr (itp);
851
852 ITP_DBG (itp, "teib-removed");
853}
854
855/**
856 * VFT registered with the adjacency delegate
857 */
858const static adj_delegate_vft_t ipsec_tun_adj_delegate_vft = {
859 .adv_adj_deleted = ipsec_tun_protect_adj_delegate_adj_deleted,
860 .adv_adj_created = ipsec_tun_protect_adj_delegate_adj_created,
Neale Ranns4ec36c52020-03-31 09:21:29 -0400861 .adv_adj_modified = ipsec_tun_protect_adj_delegate_adj_modified,
Neale Ranns28287212019-12-16 00:53:11 +0000862 .adv_format = ipsec_tun_protect_adj_delegate_format,
863};
864
865const static teib_vft_t ipsec_tun_teib_vft = {
866 .nv_added = ipsec_tun_teib_entry_added,
867 .nv_deleted = ipsec_tun_teib_entry_deleted,
868};
869
Neale Rannsa9e27742020-12-23 16:22:28 +0000870static void
Neale Ranns7b4e52f2020-05-24 16:17:50 +0000871ipsec_tun_table_init (ip_address_family_t af, uword table_size, u32 n_buckets)
872{
873 ipsec_main_t *im;
874
875 im = &ipsec_main;
876
877 if (AF_IP4 == af)
Neale Ranns302b25a2020-10-19 13:23:33 +0000878 clib_bihash_init_8_16 (&im->tun4_protect_by_key,
879 "IPSec IPv4 tunnels", n_buckets, table_size);
Neale Ranns7b4e52f2020-05-24 16:17:50 +0000880 else
Neale Ranns302b25a2020-10-19 13:23:33 +0000881 clib_bihash_init_24_16 (&im->tun6_protect_by_key,
882 "IPSec IPv6 tunnels", n_buckets, table_size);
Neale Ranns7b4e52f2020-05-24 16:17:50 +0000883}
Neale Ranns4ec36c52020-03-31 09:21:29 -0400884
Neale Rannsa9e27742020-12-23 16:22:28 +0000885static clib_error_t *
886ipsec_tunnel_protect_init (vlib_main_t *vm)
Neale Rannsc87b66c2019-02-07 07:26:12 -0800887{
888 ipsec_main_t *im;
889
890 im = &ipsec_main;
Neale Ranns302b25a2020-10-19 13:23:33 +0000891 clib_bihash_init_24_16 (&im->tun6_protect_by_key,
892 "IPSec IPv6 tunnels",
893 IPSEC_TUN_DEFAULT_HASH_NUM_BUCKETS,
894 IPSEC_TUN_DEFAULT_HASH_MEMORY_SIZE);
895 clib_bihash_init_8_16 (&im->tun4_protect_by_key,
896 "IPSec IPv4 tunnels",
Neale Ranns7b4e52f2020-05-24 16:17:50 +0000897 IPSEC_TUN_DEFAULT_HASH_NUM_BUCKETS,
898 IPSEC_TUN_DEFAULT_HASH_MEMORY_SIZE);
Neale Rannsc87b66c2019-02-07 07:26:12 -0800899
Neale Ranns02950402019-12-20 00:54:57 +0000900 /* set up feature nodes to drop outbound packets with no crypto alg set */
Neale Ranns4ec36c52020-03-31 09:21:29 -0400901 im->esp4_no_crypto_tun_node_index =
902 vlib_get_node_by_name (vm, (u8 *) "esp4-no-crypto")->index;
903 im->esp6_no_crypto_tun_node_index =
904 vlib_get_node_by_name (vm, (u8 *) "esp6-no-crypto")->index;
905 im->esp6_encrypt_l2_tun_node_index =
906 vlib_get_node_by_name (vm, (u8 *) "esp6-encrypt-tun")->index;
907 im->esp4_encrypt_l2_tun_node_index =
908 vlib_get_node_by_name (vm, (u8 *) "esp4-encrypt-tun")->index;
Neale Ranns02950402019-12-20 00:54:57 +0000909
Neale Ranns28287212019-12-16 00:53:11 +0000910 ipsec_tun_adj_delegate_type =
911 adj_delegate_register_new_type (&ipsec_tun_adj_delegate_vft);
912
913 ipsec_tun_protect_logger = vlib_log_register_class ("ipsec", "tun");
914
915 teib_register (&ipsec_tun_teib_vft);
916
Neale Rannsc87b66c2019-02-07 07:26:12 -0800917 return 0;
918}
919
920VLIB_INIT_FUNCTION (ipsec_tunnel_protect_init);
921
Neale Ranns7b4e52f2020-05-24 16:17:50 +0000922static clib_error_t *
923ipsec_config (vlib_main_t * vm, unformat_input_t * input)
924{
925 unformat_input_t sub_input;
926
927 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
928 {
929 if (unformat (input, "ip4 %U", unformat_vlib_cli_sub_input, &sub_input))
930 {
931 uword table_size = ~0;
932 u32 n_buckets = ~0;
933
934 while (unformat_check_input (&sub_input) != UNFORMAT_END_OF_INPUT)
935 {
936 if (unformat (&sub_input, "num-buckets %u", &n_buckets))
937 ;
938 else
939 return clib_error_return (0, "unknown input `%U'",
940 format_unformat_error, &sub_input);
941 }
942
943 ipsec_tun_table_init (AF_IP4, table_size, n_buckets);
944 }
945 else if (unformat (input, "ip6 %U", unformat_vlib_cli_sub_input,
946 &sub_input))
947 {
948 uword table_size = ~0;
949 u32 n_buckets = ~0;
950
951 while (unformat_check_input (&sub_input) != UNFORMAT_END_OF_INPUT)
952 {
953 if (unformat (&sub_input, "num-buckets %u", &n_buckets))
954 ;
955 else
956 return clib_error_return (0, "unknown input `%U'",
957 format_unformat_error, &sub_input);
958 }
959
960 ipsec_tun_table_init (AF_IP6, table_size, n_buckets);
961 }
962 else
963 return clib_error_return (0, "unknown input `%U'",
964 format_unformat_error, input);
965 }
966
967 return 0;
968}
969
970VLIB_CONFIG_FUNCTION (ipsec_config, "ipsec");
Neale Rannsc87b66c2019-02-07 07:26:12 -0800971
972/*
973 * fd.io coding-style-patch-verification: ON
974 *
975 * Local Variables:
976 * eval: (c-set-style "gnu")
977 * End:
978 */