2 * Copyright (c) 2015 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
18 #include <vnet/ip/ip.h>
19 #include <vnet/feature/feature.h>
21 #include <openssl/hmac.h>
22 #include <openssl/rand.h>
23 #include <openssl/evp.h>
25 #include <vppinfra/types.h>
26 #include <vppinfra/cache.h>
28 #define IPSEC_FLAG_IPSEC_GRE_TUNNEL (1 << 0)
30 #define foreach_ipsec_output_next \
31 _ (DROP, "error-drop") \
32 _ (ESP4_ENCRYPT, "esp4-encrypt") \
33 _ (AH4_ENCRYPT, "ah4-encrypt") \
34 _ (ESP6_ENCRYPT, "esp6-encrypt") \
35 _ (AH6_ENCRYPT, "ah6-encrypt")
37 #define _(v, s) IPSEC_OUTPUT_NEXT_##v,
40 foreach_ipsec_output_next
43 } ipsec_output_next_t;
45 #define foreach_ipsec_input_next \
46 _ (DROP, "error-drop") \
47 _ (ESP4_DECRYPT, "esp4-decrypt") \
48 _ (AH4_DECRYPT, "ah4-decrypt") \
49 _ (ESP6_DECRYPT, "esp6-decrypt") \
50 _ (AH6_DECRYPT, "ah6-decrypt")
52 #define _(v, s) IPSEC_INPUT_NEXT_##v,
55 foreach_ipsec_input_next
60 #define foreach_ipsec_policy_action \
61 _ (0, BYPASS, "bypass") \
62 _ (1, DISCARD, "discard") \
63 _ (2, RESOLVE, "resolve") \
64 _ (3, PROTECT, "protect")
68 #define _(v, f, s) IPSEC_POLICY_ACTION_##f = v,
69 foreach_ipsec_policy_action
71 } ipsec_policy_action_t;
73 #define IPSEC_POLICY_N_ACTION (IPSEC_POLICY_ACTION_PROTECT + 1)
76 #define foreach_ipsec_crypto_alg \
78 _ (1, AES_CBC_128, "aes-cbc-128") \
79 _ (2, AES_CBC_192, "aes-cbc-192") \
80 _ (3, AES_CBC_256, "aes-cbc-256") \
81 _ (4, AES_CTR_128, "aes-ctr-128") \
82 _ (5, AES_CTR_192, "aes-ctr-192") \
83 _ (6, AES_CTR_256, "aes-ctr-256") \
84 _ (7, AES_GCM_128, "aes-gcm-128") \
85 _ (8, AES_GCM_192, "aes-gcm-192") \
86 _ (9, AES_GCM_256, "aes-gcm-256") \
87 _ (10, DES_CBC, "des-cbc") \
88 _ (11, 3DES_CBC, "3des-cbc")
92 #define _(v, f, s) IPSEC_CRYPTO_ALG_##f = v,
93 foreach_ipsec_crypto_alg
98 #define foreach_ipsec_integ_alg \
100 _ (1, MD5_96, "md5-96") /* RFC2403 */ \
101 _ (2, SHA1_96, "sha1-96") /* RFC2404 */ \
102 _ (3, SHA_256_96, "sha-256-96") /* draft-ietf-ipsec-ciph-sha-256-00 */ \
103 _ (4, SHA_256_128, "sha-256-128") /* RFC4868 */ \
104 _ (5, SHA_384_192, "sha-384-192") /* RFC4868 */ \
105 _ (6, SHA_512_256, "sha-512-256") /* RFC4868 */
109 #define _(v, f, s) IPSEC_INTEG_ALG_##f = v,
110 foreach_ipsec_integ_alg
117 IPSEC_PROTOCOL_AH = 0,
118 IPSEC_PROTOCOL_ESP = 1
125 ipsec_protocol_t protocol;
127 ipsec_crypto_alg_t crypto_alg;
131 ipsec_integ_alg_t integ_alg;
141 ip46_address_t tunnel_src_addr;
142 ip46_address_t tunnel_dst_addr;
160 ip46_address_t start, stop;
161 } ip46_address_range_t;
173 ip4_address_t local_ip, remote_ip;
176 ipsec_crypto_alg_t crypto_alg;
177 u8 local_crypto_key_len;
178 u8 local_crypto_key[128];
179 u8 remote_crypto_key_len;
180 u8 remote_crypto_key[128];
181 ipsec_integ_alg_t integ_alg;
182 u8 local_integ_key_len;
183 u8 local_integ_key[128];
184 u8 remote_integ_key_len;
185 u8 remote_integ_key[128];
190 } ipsec_add_del_tunnel_args_t;
197 ip4_address_t local_ip;
198 ip4_address_t remote_ip;
199 } ipsec_add_del_ipsec_gre_tunnel_args_t;
203 IPSEC_IF_SET_KEY_TYPE_NONE,
204 IPSEC_IF_SET_KEY_TYPE_LOCAL_CRYPTO,
205 IPSEC_IF_SET_KEY_TYPE_REMOTE_CRYPTO,
206 IPSEC_IF_SET_KEY_TYPE_LOCAL_INTEG,
207 IPSEC_IF_SET_KEY_TYPE_REMOTE_INTEG,
208 } ipsec_if_set_key_type_t;
218 ip46_address_range_t laddr;
219 ip46_address_range_t raddr;
225 ipsec_policy_action_t policy;
230 vlib_counter_t counter;
236 /* pool of policies */
237 ipsec_policy_t *policies;
238 /* vectors of policy indices */
239 u32 *ipv4_outbound_policies;
240 u32 *ipv6_outbound_policies;
241 u32 *ipv4_inbound_protect_policy_indices;
242 u32 *ipv4_inbound_policy_discard_and_bypass_indices;
243 u32 *ipv6_inbound_protect_policy_indices;
244 u32 *ipv6_inbound_policy_discard_and_bypass_indices;
250 } ip4_ipsec_config_t;
255 } ip6_ipsec_config_t;
259 /* Required for pool_get_aligned */
260 CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
267 typedef clib_error_t *(*add_del_sa_sess_cb_t) (u32 sa_index, u8 is_add);
268 typedef clib_error_t *(*check_support_cb_t) (ipsec_sa_t * sa);
273 /* add/del callback */
274 add_del_sa_sess_cb_t add_del_sa_sess_cb;
275 /* check support function */
276 check_support_cb_t check_support_cb;
277 u32 ah4_encrypt_node_index;
278 u32 ah4_decrypt_node_index;
279 u32 ah4_encrypt_next_index;
280 u32 ah4_decrypt_next_index;
281 u32 ah6_encrypt_node_index;
282 u32 ah6_decrypt_node_index;
283 u32 ah6_encrypt_next_index;
284 u32 ah6_decrypt_next_index;
285 } ipsec_ah_backend_t;
290 /* add/del callback */
291 add_del_sa_sess_cb_t add_del_sa_sess_cb;
292 /* check support function */
293 check_support_cb_t check_support_cb;
294 u32 esp4_encrypt_node_index;
295 u32 esp4_decrypt_node_index;
296 u32 esp4_encrypt_next_index;
297 u32 esp4_decrypt_next_index;
298 u32 esp6_encrypt_node_index;
299 u32 esp6_decrypt_node_index;
300 u32 esp6_encrypt_next_index;
301 u32 esp6_decrypt_next_index;
302 } ipsec_esp_backend_t;
306 const EVP_CIPHER *type;
309 } ipsec_proto_main_crypto_alg_t;
315 } ipsec_proto_main_integ_alg_t;
319 CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
320 #if OPENSSL_VERSION_NUMBER >= 0x10100000L
321 EVP_CIPHER_CTX *encrypt_ctx;
323 EVP_CIPHER_CTX encrypt_ctx;
325 CLIB_CACHE_LINE_ALIGN_MARK (cacheline1);
326 #if OPENSSL_VERSION_NUMBER >= 0x10100000L
327 EVP_CIPHER_CTX *decrypt_ctx;
329 EVP_CIPHER_CTX decrypt_ctx;
331 CLIB_CACHE_LINE_ALIGN_MARK (cacheline2);
332 #if OPENSSL_VERSION_NUMBER >= 0x10100000L
337 ipsec_crypto_alg_t last_encrypt_alg;
338 ipsec_crypto_alg_t last_decrypt_alg;
339 ipsec_integ_alg_t last_integ_alg;
340 } ipsec_proto_main_per_thread_data_t;
344 ipsec_proto_main_crypto_alg_t *ipsec_proto_main_crypto_algs;
345 ipsec_proto_main_integ_alg_t *ipsec_proto_main_integ_algs;
346 ipsec_proto_main_per_thread_data_t *per_thread_data;
347 } ipsec_proto_main_t;
349 extern ipsec_proto_main_t ipsec_proto_main;
353 /* pool of tunnel instances */
357 /* pool of tunnel interfaces */
358 ipsec_tunnel_if_t *tunnel_interfaces;
359 u32 *free_tunnel_if_indices;
363 uword *tunnel_index_by_key;
366 vlib_main_t *vlib_main;
367 vnet_main_t *vnet_main;
369 /* next node indices */
370 u32 feature_next_node_index[32];
373 uword *spd_index_by_spd_id;
374 uword *spd_index_by_sw_if_index;
375 uword *sa_index_by_sa_id;
376 uword *ipsec_if_pool_index_by_key;
377 uword *ipsec_if_real_dev_by_show_dev;
380 u32 error_drop_node_index;
381 u32 esp4_encrypt_node_index;
382 u32 esp4_decrypt_node_index;
383 u32 ah4_encrypt_node_index;
384 u32 ah4_decrypt_node_index;
385 u32 esp6_encrypt_node_index;
386 u32 esp6_decrypt_node_index;
387 u32 ah6_encrypt_node_index;
388 u32 ah6_decrypt_node_index;
389 /* next node indices */
390 u32 esp4_encrypt_next_index;
391 u32 esp4_decrypt_next_index;
392 u32 ah4_encrypt_next_index;
393 u32 ah4_decrypt_next_index;
394 u32 esp6_encrypt_next_index;
395 u32 esp6_decrypt_next_index;
396 u32 ah6_encrypt_next_index;
397 u32 ah6_decrypt_next_index;
399 /* pool of ah backends */
400 ipsec_ah_backend_t *ah_backends;
401 /* pool of esp backends */
402 ipsec_esp_backend_t *esp_backends;
403 /* index of current ah backend */
404 u32 ah_current_backend;
405 /* index of current esp backend */
406 u32 esp_current_backend;
407 /* index of default ah backend */
408 u32 ah_default_backend;
409 /* index of default esp backend */
410 u32 esp_default_backend;
412 /* helper for sort function */
413 ipsec_spd_t *spd_to_sort;
416 extern ipsec_main_t ipsec_main;
418 clib_error_t *ipsec_add_del_sa_sess_cb (ipsec_main_t * im, u32 sa_index,
421 clib_error_t *ipsec_check_support_cb (ipsec_main_t * im, ipsec_sa_t * sa);
423 extern vlib_node_registration_t esp4_encrypt_node;
424 extern vlib_node_registration_t esp4_decrypt_node;
425 extern vlib_node_registration_t ah4_encrypt_node;
426 extern vlib_node_registration_t ah4_decrypt_node;
427 extern vlib_node_registration_t esp6_encrypt_node;
428 extern vlib_node_registration_t esp6_decrypt_node;
429 extern vlib_node_registration_t ah6_encrypt_node;
430 extern vlib_node_registration_t ah6_decrypt_node;
431 extern vlib_node_registration_t ipsec_if_input_node;
436 int ipsec_set_interface_spd (vlib_main_t * vm, u32 sw_if_index, u32 spd_id,
438 int ipsec_add_del_spd (vlib_main_t * vm, u32 spd_id, int is_add);
439 int ipsec_add_del_policy (vlib_main_t * vm, ipsec_policy_t * policy,
441 int ipsec_add_del_sa (vlib_main_t * vm, ipsec_sa_t * new_sa, int is_add);
442 int ipsec_set_sa_key (vlib_main_t * vm, ipsec_sa_t * sa_update);
444 u32 ipsec_get_sa_index_by_sa_id (u32 sa_id);
445 u8 ipsec_is_sa_used (u32 sa_index);
446 u8 *format_ipsec_policy_action (u8 * s, va_list * args);
447 u8 *format_ipsec_crypto_alg (u8 * s, va_list * args);
448 u8 *format_ipsec_integ_alg (u8 * s, va_list * args);
449 u8 *format_ipsec_replay_window (u8 * s, va_list * args);
450 uword unformat_ipsec_policy_action (unformat_input_t * input, va_list * args);
451 uword unformat_ipsec_crypto_alg (unformat_input_t * input, va_list * args);
452 uword unformat_ipsec_integ_alg (unformat_input_t * input, va_list * args);
454 int ipsec_add_del_tunnel_if_internal (vnet_main_t * vnm,
455 ipsec_add_del_tunnel_args_t * args,
457 int ipsec_add_del_tunnel_if (ipsec_add_del_tunnel_args_t * args);
458 int ipsec_add_del_ipsec_gre_tunnel (vnet_main_t * vnm,
459 ipsec_add_del_ipsec_gre_tunnel_args_t *
461 int ipsec_set_interface_key (vnet_main_t * vnm, u32 hw_if_index,
462 ipsec_if_set_key_type_t type, u8 alg, u8 * key);
463 int ipsec_set_interface_sa (vnet_main_t * vnm, u32 hw_if_index, u32 sa_id,
471 ipsec_alloc_empty_buffers (vlib_main_t * vm, ipsec_main_t * im)
473 u32 thread_index = vm->thread_index;
474 uword l = vec_len (im->empty_buffers[thread_index]);
477 if (PREDICT_FALSE (l < VLIB_FRAME_SIZE))
479 if (!im->empty_buffers[thread_index])
481 vec_alloc (im->empty_buffers[thread_index], 2 * VLIB_FRAME_SIZE);
484 n_alloc = vlib_buffer_alloc (vm, im->empty_buffers[thread_index] + l,
485 2 * VLIB_FRAME_SIZE - l);
487 _vec_len (im->empty_buffers[thread_index]) = l + n_alloc;
491 static_always_inline u32
492 get_next_output_feature_node_index (vlib_buffer_t * b,
493 vlib_node_runtime_t * nr)
496 vlib_main_t *vm = vlib_get_main ();
497 vlib_node_t *node = vlib_get_node (vm, nr->node_index);
499 vnet_feature_next (&next, b);
500 return node->next_nodes[next];
503 u32 ipsec_register_ah_backend (vlib_main_t * vm, ipsec_main_t * im,
505 const char *ah4_encrypt_node_name,
506 const char *ah4_decrypt_node_name,
507 const char *ah6_encrypt_node_name,
508 const char *ah6_decrypt_node_name,
509 check_support_cb_t ah_check_support_cb,
510 add_del_sa_sess_cb_t ah_add_del_sa_sess_cb);
512 u32 ipsec_register_esp_backend (vlib_main_t * vm, ipsec_main_t * im,
514 const char *esp4_encrypt_node_name,
515 const char *esp4_decrypt_node_name,
516 const char *esp6_encrypt_node_name,
517 const char *esp6_decrypt_node_name,
518 check_support_cb_t esp_check_support_cb,
519 add_del_sa_sess_cb_t esp_add_del_sa_sess_cb);
521 int ipsec_select_ah_backend (ipsec_main_t * im, u32 ah_backend_idx);
522 int ipsec_select_esp_backend (ipsec_main_t * im, u32 esp_backend_idx);
523 #endif /* __IPSEC_H__ */
526 * fd.io coding-style-patch-verification: ON
529 * eval: (c-set-style "gnu")