2 * ipsec.c : IPSEC module functions
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/vnet.h>
19 #include <vnet/api_errno.h>
20 #include <vnet/ip/ip.h>
21 #include <vnet/interface.h>
22 #include <vnet/udp/udp_local.h>
24 #include <vnet/ipsec/ipsec.h>
25 #include <vnet/ipsec/esp.h>
26 #include <vnet/ipsec/ah.h>
27 #include <vnet/ipsec/ipsec_tun.h>
29 /* Flow cache is sized for 1 million flows with a load factor of .25.
31 #define IPSEC4_OUT_SPD_DEFAULT_HASH_NUM_BUCKETS (1 << 22)
33 ipsec_main_t ipsec_main;
34 esp_async_post_next_t esp_encrypt_async_next;
35 esp_async_post_next_t esp_decrypt_async_next;
38 ipsec_check_ah_support (ipsec_sa_t * sa)
40 ipsec_main_t *im = &ipsec_main;
42 if (sa->integ_alg == IPSEC_INTEG_ALG_NONE)
43 return clib_error_return (0, "unsupported none integ-alg");
45 if (!vnet_crypto_is_set_handler (im->integ_algs[sa->integ_alg].alg))
46 return clib_error_return (0, "No crypto engine support for %U",
47 format_ipsec_integ_alg, sa->integ_alg);
53 ipsec_check_esp_support (ipsec_sa_t * sa)
55 ipsec_main_t *im = &ipsec_main;
57 if (IPSEC_INTEG_ALG_NONE != sa->integ_alg)
59 if (!vnet_crypto_is_set_handler (im->integ_algs[sa->integ_alg].alg))
60 return clib_error_return (0, "No crypto engine support for %U",
61 format_ipsec_integ_alg, sa->integ_alg);
63 if (IPSEC_CRYPTO_ALG_NONE != sa->crypto_alg)
65 if (!vnet_crypto_is_set_handler (im->crypto_algs[sa->crypto_alg].alg))
66 return clib_error_return (0, "No crypto engine support for %U",
67 format_ipsec_crypto_alg, sa->crypto_alg);
74 ipsec_add_del_sa_sess_cb (ipsec_main_t * im, u32 sa_index, u8 is_add)
76 ipsec_ah_backend_t *ah =
77 pool_elt_at_index (im->ah_backends, im->ah_current_backend);
78 if (ah->add_del_sa_sess_cb)
80 clib_error_t *err = ah->add_del_sa_sess_cb (sa_index, is_add);
84 ipsec_esp_backend_t *esp =
85 pool_elt_at_index (im->esp_backends, im->esp_current_backend);
86 if (esp->add_del_sa_sess_cb)
88 clib_error_t *err = esp->add_del_sa_sess_cb (sa_index, is_add);
96 ipsec_check_support_cb (ipsec_main_t * im, ipsec_sa_t * sa)
98 clib_error_t *error = 0;
100 if (PREDICT_FALSE (sa->protocol == IPSEC_PROTOCOL_AH))
102 ipsec_ah_backend_t *ah =
103 pool_elt_at_index (im->ah_backends, im->ah_current_backend);
104 ASSERT (ah->check_support_cb);
105 error = ah->check_support_cb (sa);
109 ipsec_esp_backend_t *esp =
110 pool_elt_at_index (im->esp_backends, im->esp_current_backend);
111 ASSERT (esp->check_support_cb);
112 error = esp->check_support_cb (sa);
119 ipsec_add_node (vlib_main_t * vm, const char *node_name,
120 const char *prev_node_name, u32 * out_node_index,
121 u32 * out_next_index)
123 vlib_node_t *prev_node, *node;
124 prev_node = vlib_get_node_by_name (vm, (u8 *) prev_node_name);
126 node = vlib_get_node_by_name (vm, (u8 *) node_name);
128 *out_node_index = node->index;
129 *out_next_index = vlib_node_add_next (vm, prev_node->index, node->index);
133 ipsec_unregister_udp_port (u16 port)
135 ipsec_main_t *im = &ipsec_main;
139 p = hash_get (im->udp_port_registrations, port);
147 udp_unregister_dst_port (vlib_get_main (), port, 1);
148 hash_unset (im->udp_port_registrations, port);
152 hash_unset (im->udp_port_registrations, port);
153 hash_set (im->udp_port_registrations, port, n_regs);
158 ipsec_register_udp_port (u16 port)
160 ipsec_main_t *im = &ipsec_main;
164 p = hash_get (im->udp_port_registrations, port);
166 n_regs = (p ? p[0] : 0);
169 udp_register_dst_port (vlib_get_main (), port,
170 ipsec4_tun_input_node.index, 1);
172 hash_unset (im->udp_port_registrations, port);
173 hash_set (im->udp_port_registrations, port, n_regs);
177 ipsec_register_ah_backend (vlib_main_t * vm, ipsec_main_t * im,
179 const char *ah4_encrypt_node_name,
180 const char *ah4_decrypt_node_name,
181 const char *ah6_encrypt_node_name,
182 const char *ah6_decrypt_node_name,
183 check_support_cb_t ah_check_support_cb,
184 add_del_sa_sess_cb_t ah_add_del_sa_sess_cb)
186 ipsec_ah_backend_t *b;
187 pool_get (im->ah_backends, b);
188 b->name = format (0, "%s%c", name, 0);
190 ipsec_add_node (vm, ah4_encrypt_node_name, "ipsec4-output-feature",
191 &b->ah4_encrypt_node_index, &b->ah4_encrypt_next_index);
192 ipsec_add_node (vm, ah4_decrypt_node_name, "ipsec4-input-feature",
193 &b->ah4_decrypt_node_index, &b->ah4_decrypt_next_index);
194 ipsec_add_node (vm, ah6_encrypt_node_name, "ipsec6-output-feature",
195 &b->ah6_encrypt_node_index, &b->ah6_encrypt_next_index);
196 ipsec_add_node (vm, ah6_decrypt_node_name, "ipsec6-input-feature",
197 &b->ah6_decrypt_node_index, &b->ah6_decrypt_next_index);
199 b->check_support_cb = ah_check_support_cb;
200 b->add_del_sa_sess_cb = ah_add_del_sa_sess_cb;
201 return b - im->ah_backends;
205 ipsec_register_esp_backend (
206 vlib_main_t *vm, ipsec_main_t *im, const char *name,
207 const char *esp4_encrypt_node_name, const char *esp4_encrypt_node_tun_name,
208 const char *esp4_decrypt_node_name, const char *esp4_decrypt_tun_node_name,
209 const char *esp6_encrypt_node_name, const char *esp6_encrypt_node_tun_name,
210 const char *esp6_decrypt_node_name, const char *esp6_decrypt_tun_node_name,
211 const char *esp_mpls_encrypt_node_tun_name,
212 check_support_cb_t esp_check_support_cb,
213 add_del_sa_sess_cb_t esp_add_del_sa_sess_cb,
214 enable_disable_cb_t enable_disable_cb)
216 ipsec_esp_backend_t *b;
218 pool_get (im->esp_backends, b);
219 b->name = format (0, "%s%c", name, 0);
221 ipsec_add_node (vm, esp4_encrypt_node_name, "ipsec4-output-feature",
222 &b->esp4_encrypt_node_index, &b->esp4_encrypt_next_index);
223 ipsec_add_node (vm, esp4_decrypt_node_name, "ipsec4-input-feature",
224 &b->esp4_decrypt_node_index, &b->esp4_decrypt_next_index);
225 ipsec_add_node (vm, esp6_encrypt_node_name, "ipsec6-output-feature",
226 &b->esp6_encrypt_node_index, &b->esp6_encrypt_next_index);
227 ipsec_add_node (vm, esp6_decrypt_node_name, "ipsec6-input-feature",
228 &b->esp6_decrypt_node_index, &b->esp6_decrypt_next_index);
229 ipsec_add_node (vm, esp4_decrypt_tun_node_name, "ipsec4-tun-input",
230 &b->esp4_decrypt_tun_node_index,
231 &b->esp4_decrypt_tun_next_index);
232 ipsec_add_node (vm, esp6_decrypt_tun_node_name, "ipsec6-tun-input",
233 &b->esp6_decrypt_tun_node_index,
234 &b->esp6_decrypt_tun_next_index);
236 b->esp6_encrypt_tun_node_index =
237 vlib_get_node_by_name (vm, (u8 *) esp6_encrypt_node_tun_name)->index;
238 b->esp_mpls_encrypt_tun_node_index =
239 vlib_get_node_by_name (vm, (u8 *) esp_mpls_encrypt_node_tun_name)->index;
240 b->esp4_encrypt_tun_node_index =
241 vlib_get_node_by_name (vm, (u8 *) esp4_encrypt_node_tun_name)->index;
243 b->check_support_cb = esp_check_support_cb;
244 b->add_del_sa_sess_cb = esp_add_del_sa_sess_cb;
245 b->enable_disable_cb = enable_disable_cb;
247 return b - im->esp_backends;
251 ipsec_rsc_in_use (ipsec_main_t * im)
253 /* return an error is crypto resource are in use */
254 if (pool_elts (ipsec_sa_pool) > 0)
255 return clib_error_return (0, "%d SA entries configured",
256 pool_elts (ipsec_sa_pool));
262 ipsec_select_ah_backend (ipsec_main_t * im, u32 backend_idx)
264 if (ipsec_rsc_in_use (im))
265 return VNET_API_ERROR_RSRC_IN_USE;
267 if (pool_is_free_index (im->ah_backends, backend_idx))
268 return VNET_API_ERROR_INVALID_VALUE;
270 ipsec_ah_backend_t *b = pool_elt_at_index (im->ah_backends, backend_idx);
271 im->ah_current_backend = backend_idx;
272 im->ah4_encrypt_node_index = b->ah4_encrypt_node_index;
273 im->ah4_decrypt_node_index = b->ah4_decrypt_node_index;
274 im->ah4_encrypt_next_index = b->ah4_encrypt_next_index;
275 im->ah4_decrypt_next_index = b->ah4_decrypt_next_index;
276 im->ah6_encrypt_node_index = b->ah6_encrypt_node_index;
277 im->ah6_decrypt_node_index = b->ah6_decrypt_node_index;
278 im->ah6_encrypt_next_index = b->ah6_encrypt_next_index;
279 im->ah6_decrypt_next_index = b->ah6_decrypt_next_index;
285 ipsec_select_esp_backend (ipsec_main_t * im, u32 backend_idx)
287 if (ipsec_rsc_in_use (im))
288 return VNET_API_ERROR_RSRC_IN_USE;
290 if (pool_is_free_index (im->esp_backends, backend_idx))
291 return VNET_API_ERROR_INVALID_VALUE;
293 /* disable current backend */
294 if (im->esp_current_backend != ~0)
296 ipsec_esp_backend_t *cb = pool_elt_at_index (im->esp_backends,
297 im->esp_current_backend);
298 if (cb->enable_disable_cb)
300 if ((cb->enable_disable_cb) (0) != 0)
305 ipsec_esp_backend_t *b = pool_elt_at_index (im->esp_backends, backend_idx);
306 im->esp_current_backend = backend_idx;
307 im->esp4_encrypt_node_index = b->esp4_encrypt_node_index;
308 im->esp4_decrypt_node_index = b->esp4_decrypt_node_index;
309 im->esp4_encrypt_next_index = b->esp4_encrypt_next_index;
310 im->esp4_decrypt_next_index = b->esp4_decrypt_next_index;
311 im->esp6_encrypt_node_index = b->esp6_encrypt_node_index;
312 im->esp6_decrypt_node_index = b->esp6_decrypt_node_index;
313 im->esp6_encrypt_next_index = b->esp6_encrypt_next_index;
314 im->esp6_decrypt_next_index = b->esp6_decrypt_next_index;
315 im->esp4_decrypt_tun_node_index = b->esp4_decrypt_tun_node_index;
316 im->esp4_decrypt_tun_next_index = b->esp4_decrypt_tun_next_index;
317 im->esp6_decrypt_tun_node_index = b->esp6_decrypt_tun_node_index;
318 im->esp6_decrypt_tun_next_index = b->esp6_decrypt_tun_next_index;
319 im->esp4_encrypt_tun_node_index = b->esp4_encrypt_tun_node_index;
320 im->esp6_encrypt_tun_node_index = b->esp6_encrypt_tun_node_index;
321 im->esp_mpls_encrypt_tun_node_index = b->esp_mpls_encrypt_tun_node_index;
323 if (b->enable_disable_cb)
325 if ((b->enable_disable_cb) (1) != 0)
332 ipsec_set_async_mode (u32 is_enabled)
334 ipsec_main_t *im = &ipsec_main;
337 vnet_crypto_request_async_mode (is_enabled);
339 im->async_mode = is_enabled;
341 /* change SA crypto op data */
342 pool_foreach (sa, ipsec_sa_pool)
345 (is_enabled ? sa->async_op_data.data : sa->sync_op_data.data);
350 crypto_engine_backend_register_post_node (vlib_main_t * vm)
352 esp_async_post_next_t *eit;
353 esp_async_post_next_t *dit;
355 eit = &esp_encrypt_async_next;
356 eit->esp4_post_next =
357 vnet_crypto_register_post_node (vm, "esp4-encrypt-post");
358 eit->esp6_post_next =
359 vnet_crypto_register_post_node (vm, "esp6-encrypt-post");
360 eit->esp4_tun_post_next =
361 vnet_crypto_register_post_node (vm, "esp4-encrypt-tun-post");
362 eit->esp6_tun_post_next =
363 vnet_crypto_register_post_node (vm, "esp6-encrypt-tun-post");
364 eit->esp_mpls_tun_post_next =
365 vnet_crypto_register_post_node (vm, "esp-mpls-encrypt-tun-post");
367 dit = &esp_decrypt_async_next;
368 dit->esp4_post_next =
369 vnet_crypto_register_post_node (vm, "esp4-decrypt-post");
370 dit->esp6_post_next =
371 vnet_crypto_register_post_node (vm, "esp6-decrypt-post");
372 dit->esp4_tun_post_next =
373 vnet_crypto_register_post_node (vm, "esp4-decrypt-tun-post");
374 dit->esp6_tun_post_next =
375 vnet_crypto_register_post_node (vm, "esp6-decrypt-tun-post");
378 static clib_error_t *
379 ipsec_init (vlib_main_t * vm)
382 ipsec_main_t *im = &ipsec_main;
383 ipsec_main_crypto_alg_t *a;
385 /* Backend registration requires the feature arcs to be set up */
386 if ((error = vlib_call_init_function (vm, vnet_feature_init)))
389 im->vnet_main = vnet_get_main ();
392 im->spd_index_by_spd_id = hash_create (0, sizeof (uword));
393 im->sa_index_by_sa_id = hash_create (0, sizeof (uword));
394 im->spd_index_by_sw_if_index = hash_create (0, sizeof (uword));
396 vlib_node_t *node = vlib_get_node_by_name (vm, (u8 *) "error-drop");
398 im->error_drop_node_index = node->index;
400 im->ah_current_backend = ~0;
401 im->esp_current_backend = ~0;
403 u32 idx = ipsec_register_ah_backend (vm, im, "crypto engine backend",
408 ipsec_check_ah_support,
411 im->ah_default_backend = idx;
412 int rv = ipsec_select_ah_backend (im, idx);
414 (void) (rv); // avoid warning
416 idx = ipsec_register_esp_backend (
417 vm, im, "crypto engine backend", "esp4-encrypt", "esp4-encrypt-tun",
418 "esp4-decrypt", "esp4-decrypt-tun", "esp6-encrypt", "esp6-encrypt-tun",
419 "esp6-decrypt", "esp6-decrypt-tun", "esp-mpls-encrypt-tun",
420 ipsec_check_esp_support, NULL, crypto_dispatch_enable_disable);
421 im->esp_default_backend = idx;
423 rv = ipsec_select_esp_backend (im, idx);
425 (void) (rv); // avoid warning
427 if ((error = vlib_call_init_function (vm, ipsec_cli_init)))
430 vec_validate (im->crypto_algs, IPSEC_CRYPTO_N_ALG - 1);
432 a = im->crypto_algs + IPSEC_CRYPTO_ALG_NONE;
433 a->enc_op_id = VNET_CRYPTO_OP_NONE;
434 a->dec_op_id = VNET_CRYPTO_OP_NONE;
435 a->alg = VNET_CRYPTO_ALG_NONE;
439 a = im->crypto_algs + IPSEC_CRYPTO_ALG_DES_CBC;
440 a->enc_op_id = VNET_CRYPTO_OP_DES_CBC_ENC;
441 a->dec_op_id = VNET_CRYPTO_OP_DES_CBC_DEC;
442 a->alg = VNET_CRYPTO_ALG_DES_CBC;
443 a->iv_size = a->block_align = 8;
445 a = im->crypto_algs + IPSEC_CRYPTO_ALG_3DES_CBC;
446 a->enc_op_id = VNET_CRYPTO_OP_3DES_CBC_ENC;
447 a->dec_op_id = VNET_CRYPTO_OP_3DES_CBC_DEC;
448 a->alg = VNET_CRYPTO_ALG_3DES_CBC;
449 a->iv_size = a->block_align = 8;
451 a = im->crypto_algs + IPSEC_CRYPTO_ALG_AES_CBC_128;
452 a->enc_op_id = VNET_CRYPTO_OP_AES_128_CBC_ENC;
453 a->dec_op_id = VNET_CRYPTO_OP_AES_128_CBC_DEC;
454 a->alg = VNET_CRYPTO_ALG_AES_128_CBC;
455 a->iv_size = a->block_align = 16;
457 a = im->crypto_algs + IPSEC_CRYPTO_ALG_AES_CBC_192;
458 a->enc_op_id = VNET_CRYPTO_OP_AES_192_CBC_ENC;
459 a->dec_op_id = VNET_CRYPTO_OP_AES_192_CBC_DEC;
460 a->alg = VNET_CRYPTO_ALG_AES_192_CBC;
461 a->iv_size = a->block_align = 16;
463 a = im->crypto_algs + IPSEC_CRYPTO_ALG_AES_CBC_256;
464 a->enc_op_id = VNET_CRYPTO_OP_AES_256_CBC_ENC;
465 a->dec_op_id = VNET_CRYPTO_OP_AES_256_CBC_DEC;
466 a->alg = VNET_CRYPTO_ALG_AES_256_CBC;
467 a->iv_size = a->block_align = 16;
469 a = im->crypto_algs + IPSEC_CRYPTO_ALG_AES_CTR_128;
470 a->enc_op_id = VNET_CRYPTO_OP_AES_128_CTR_ENC;
471 a->dec_op_id = VNET_CRYPTO_OP_AES_128_CTR_DEC;
472 a->alg = VNET_CRYPTO_ALG_AES_128_CTR;
476 a = im->crypto_algs + IPSEC_CRYPTO_ALG_AES_CTR_192;
477 a->enc_op_id = VNET_CRYPTO_OP_AES_192_CTR_ENC;
478 a->dec_op_id = VNET_CRYPTO_OP_AES_192_CTR_DEC;
479 a->alg = VNET_CRYPTO_ALG_AES_192_CTR;
483 a = im->crypto_algs + IPSEC_CRYPTO_ALG_AES_CTR_256;
484 a->enc_op_id = VNET_CRYPTO_OP_AES_256_CTR_ENC;
485 a->dec_op_id = VNET_CRYPTO_OP_AES_256_CTR_DEC;
486 a->alg = VNET_CRYPTO_ALG_AES_256_CTR;
490 a = im->crypto_algs + IPSEC_CRYPTO_ALG_AES_GCM_128;
491 a->enc_op_id = VNET_CRYPTO_OP_AES_128_GCM_ENC;
492 a->dec_op_id = VNET_CRYPTO_OP_AES_128_GCM_DEC;
493 a->alg = VNET_CRYPTO_ALG_AES_128_GCM;
498 a = im->crypto_algs + IPSEC_CRYPTO_ALG_AES_GCM_192;
499 a->enc_op_id = VNET_CRYPTO_OP_AES_192_GCM_ENC;
500 a->dec_op_id = VNET_CRYPTO_OP_AES_192_GCM_DEC;
501 a->alg = VNET_CRYPTO_ALG_AES_192_GCM;
506 a = im->crypto_algs + IPSEC_CRYPTO_ALG_AES_GCM_256;
507 a->enc_op_id = VNET_CRYPTO_OP_AES_256_GCM_ENC;
508 a->dec_op_id = VNET_CRYPTO_OP_AES_256_GCM_DEC;
509 a->alg = VNET_CRYPTO_ALG_AES_256_GCM;
514 vec_validate (im->integ_algs, IPSEC_INTEG_N_ALG - 1);
515 ipsec_main_integ_alg_t *i;
517 i = &im->integ_algs[IPSEC_INTEG_ALG_MD5_96];
518 i->op_id = VNET_CRYPTO_OP_MD5_HMAC;
519 i->alg = VNET_CRYPTO_ALG_HMAC_MD5;
522 i = &im->integ_algs[IPSEC_INTEG_ALG_SHA1_96];
523 i->op_id = VNET_CRYPTO_OP_SHA1_HMAC;
524 i->alg = VNET_CRYPTO_ALG_HMAC_SHA1;
527 i = &im->integ_algs[IPSEC_INTEG_ALG_SHA_256_96];
528 i->op_id = VNET_CRYPTO_OP_SHA1_HMAC;
529 i->alg = VNET_CRYPTO_ALG_HMAC_SHA256;
532 i = &im->integ_algs[IPSEC_INTEG_ALG_SHA_256_128];
533 i->op_id = VNET_CRYPTO_OP_SHA256_HMAC;
534 i->alg = VNET_CRYPTO_ALG_HMAC_SHA256;
537 i = &im->integ_algs[IPSEC_INTEG_ALG_SHA_384_192];
538 i->op_id = VNET_CRYPTO_OP_SHA384_HMAC;
539 i->alg = VNET_CRYPTO_ALG_HMAC_SHA384;
542 i = &im->integ_algs[IPSEC_INTEG_ALG_SHA_512_256];
543 i->op_id = VNET_CRYPTO_OP_SHA512_HMAC;
544 i->alg = VNET_CRYPTO_ALG_HMAC_SHA512;
547 vec_validate_aligned (im->ptd, vlib_num_workers (), CLIB_CACHE_LINE_BYTES);
550 crypto_engine_backend_register_post_node (vm);
552 im->ipsec4_out_spd_hash_tbl = NULL;
553 im->flow_cache_flag = 0;
554 im->ipsec4_out_spd_flow_cache_entries = 0;
556 im->ipsec4_out_spd_hash_num_buckets =
557 IPSEC4_OUT_SPD_DEFAULT_HASH_NUM_BUCKETS;
562 VLIB_INIT_FUNCTION (ipsec_init);
564 static clib_error_t *
565 ipsec_config (vlib_main_t *vm, unformat_input_t *input)
567 ipsec_main_t *im = &ipsec_main;
568 unformat_input_t sub_input;
569 u32 ipsec4_out_spd_hash_num_buckets;
571 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
573 if (unformat (input, "ipv4-outbound-spd-flow-cache on"))
574 im->flow_cache_flag = 1;
575 else if (unformat (input, "ipv4-outbound-spd-flow-cache off"))
576 im->flow_cache_flag = 0;
577 else if (unformat (input, "ipv4-outbound-spd-hash-buckets %d",
578 &ipsec4_out_spd_hash_num_buckets))
580 /* Size of hash is power of 2 >= number of buckets */
581 im->ipsec4_out_spd_hash_num_buckets =
582 1ULL << max_log2 (ipsec4_out_spd_hash_num_buckets);
584 else if (unformat (input, "ip4 %U", unformat_vlib_cli_sub_input,
587 uword table_size = ~0;
590 while (unformat_check_input (&sub_input) != UNFORMAT_END_OF_INPUT)
592 if (unformat (&sub_input, "num-buckets %u", &n_buckets))
595 return clib_error_return (0, "unknown input `%U'",
596 format_unformat_error, &sub_input);
599 ipsec_tun_table_init (AF_IP4, table_size, n_buckets);
601 else if (unformat (input, "ip6 %U", unformat_vlib_cli_sub_input,
604 uword table_size = ~0;
607 while (unformat_check_input (&sub_input) != UNFORMAT_END_OF_INPUT)
609 if (unformat (&sub_input, "num-buckets %u", &n_buckets))
612 return clib_error_return (0, "unknown input `%U'",
613 format_unformat_error, &sub_input);
616 ipsec_tun_table_init (AF_IP6, table_size, n_buckets);
619 return clib_error_return (0, "unknown input `%U'",
620 format_unformat_error, input);
622 if (im->flow_cache_flag)
624 vec_add2 (im->ipsec4_out_spd_hash_tbl, im->ipsec4_out_spd_hash_tbl,
625 im->ipsec4_out_spd_hash_num_buckets);
631 VLIB_CONFIG_FUNCTION (ipsec_config, "ipsec");
634 * fd.io coding-style-patch-verification: ON
637 * eval: (c-set-style "gnu")