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 #define IPSEC_FLAG_IPSEC_GRE_TUNNEL (1 << 0)
23 #define foreach_ipsec_output_next \
24 _ (DROP, "error-drop") \
25 _ (ESP4_ENCRYPT, "esp4-encrypt") \
26 _ (AH4_ENCRYPT, "ah4-encrypt") \
27 _ (ESP6_ENCRYPT, "esp6-encrypt") \
28 _ (AH6_ENCRYPT, "ah6-encrypt")
30 #define _(v, s) IPSEC_OUTPUT_NEXT_##v,
33 foreach_ipsec_output_next
36 } ipsec_output_next_t;
38 #define foreach_ipsec_input_next \
39 _ (DROP, "error-drop") \
40 _ (ESP4_DECRYPT, "esp4-decrypt") \
41 _ (AH4_DECRYPT, "ah4-decrypt") \
42 _ (ESP6_DECRYPT, "esp6-decrypt") \
43 _ (AH6_DECRYPT, "ah6-decrypt")
45 #define _(v, s) IPSEC_INPUT_NEXT_##v,
48 foreach_ipsec_input_next
54 #define foreach_ipsec_policy_action \
55 _(0, BYPASS, "bypass") \
56 _(1, DISCARD, "discard") \
57 _(2, RESOLVE, "resolve") \
58 _(3, PROTECT, "protect")
62 #define _(v,f,s) IPSEC_POLICY_ACTION_##f = v,
63 foreach_ipsec_policy_action
65 IPSEC_POLICY_N_ACTION,
66 } ipsec_policy_action_t;
68 #define foreach_ipsec_crypto_alg \
70 _(1, AES_CBC_128, "aes-cbc-128") \
71 _(2, AES_CBC_192, "aes-cbc-192") \
72 _(3, AES_CBC_256, "aes-cbc-256") \
73 _(4, AES_CTR_128, "aes-ctr-128") \
74 _(5, AES_CTR_192, "aes-ctr-192") \
75 _(6, AES_CTR_256, "aes-ctr-256") \
76 _(7, AES_GCM_128, "aes-gcm-128") \
77 _(8, AES_GCM_192, "aes-gcm-192") \
78 _(9, AES_GCM_256, "aes-gcm-256") \
79 _(10, DES_CBC, "des-cbc") \
80 _(11, 3DES_CBC, "3des-cbc")
84 #define _(v,f,s) IPSEC_CRYPTO_ALG_##f = v,
85 foreach_ipsec_crypto_alg
90 #define foreach_ipsec_integ_alg \
92 _(1, MD5_96, "md5-96") /* RFC2403 */ \
93 _(2, SHA1_96, "sha1-96") /* RFC2404 */ \
94 _(3, SHA_256_96, "sha-256-96") /* draft-ietf-ipsec-ciph-sha-256-00 */ \
95 _(4, SHA_256_128, "sha-256-128") /* RFC4868 */ \
96 _(5, SHA_384_192, "sha-384-192") /* RFC4868 */ \
97 _(6, SHA_512_256, "sha-512-256") /* RFC4868 */
101 #define _(v,f,s) IPSEC_INTEG_ALG_##f = v,
102 foreach_ipsec_integ_alg
109 IPSEC_PROTOCOL_AH = 0,
110 IPSEC_PROTOCOL_ESP = 1
117 ipsec_protocol_t protocol;
119 ipsec_crypto_alg_t crypto_alg;
123 ipsec_integ_alg_t integ_alg;
133 ip46_address_t tunnel_src_addr;
134 ip46_address_t tunnel_dst_addr;
151 ip46_address_t start, stop;
152 } ip46_address_range_t;
164 ip4_address_t local_ip, remote_ip;
167 ipsec_crypto_alg_t crypto_alg;
168 u8 local_crypto_key_len;
169 u8 local_crypto_key[128];
170 u8 remote_crypto_key_len;
171 u8 remote_crypto_key[128];
172 ipsec_integ_alg_t integ_alg;
173 u8 local_integ_key_len;
174 u8 local_integ_key[128];
175 u8 remote_integ_key_len;
176 u8 remote_integ_key[128];
180 } ipsec_add_del_tunnel_args_t;
187 ip4_address_t local_ip;
188 ip4_address_t remote_ip;
189 } ipsec_add_del_ipsec_gre_tunnel_args_t;
193 IPSEC_IF_SET_KEY_TYPE_NONE,
194 IPSEC_IF_SET_KEY_TYPE_LOCAL_CRYPTO,
195 IPSEC_IF_SET_KEY_TYPE_REMOTE_CRYPTO,
196 IPSEC_IF_SET_KEY_TYPE_LOCAL_INTEG,
197 IPSEC_IF_SET_KEY_TYPE_REMOTE_INTEG,
198 } ipsec_if_set_key_type_t;
208 ip46_address_range_t laddr;
209 ip46_address_range_t raddr;
220 vlib_counter_t counter;
226 /* pool of policies */
227 ipsec_policy_t *policies;
228 /* vectors of policy indices */
229 u32 *ipv4_outbound_policies;
230 u32 *ipv6_outbound_policies;
231 u32 *ipv4_inbound_protect_policy_indices;
232 u32 *ipv4_inbound_policy_discard_and_bypass_indices;
233 u32 *ipv6_inbound_protect_policy_indices;
234 u32 *ipv6_inbound_policy_discard_and_bypass_indices;
240 } ip4_ipsec_config_t;
245 } ip6_ipsec_config_t;
249 /* Required for pool_get_aligned */
250 CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
259 clib_error_t *(*add_del_sa_sess_cb) (u32 sa_index, u8 is_add);
260 clib_error_t *(*check_support_cb) (ipsec_sa_t * sa);
261 } ipsec_main_callbacks_t;
265 /* pool of tunnel instances */
269 /* pool of tunnel interfaces */
270 ipsec_tunnel_if_t *tunnel_interfaces;
271 u32 *free_tunnel_if_indices;
275 uword *tunnel_index_by_key;
278 vlib_main_t *vlib_main;
279 vnet_main_t *vnet_main;
281 /* next node indices */
282 u32 feature_next_node_index[32];
285 uword *spd_index_by_spd_id;
286 uword *spd_index_by_sw_if_index;
287 uword *sa_index_by_sa_id;
288 uword *ipsec_if_pool_index_by_key;
289 uword *ipsec_if_real_dev_by_show_dev;
292 u32 error_drop_node_index;
293 u32 esp4_encrypt_node_index;
294 u32 esp4_decrypt_node_index;
295 u32 ah4_encrypt_node_index;
296 u32 ah4_decrypt_node_index;
297 u32 esp6_encrypt_node_index;
298 u32 esp6_decrypt_node_index;
299 u32 ah6_encrypt_node_index;
300 u32 ah6_decrypt_node_index;
301 /* next node indices */
302 u32 esp4_encrypt_next_index;
303 u32 esp4_decrypt_next_index;
304 u32 ah4_encrypt_next_index;
305 u32 ah4_decrypt_next_index;
306 u32 esp6_encrypt_next_index;
307 u32 esp6_decrypt_next_index;
308 u32 ah6_encrypt_next_index;
309 u32 ah6_decrypt_next_index;
312 ipsec_main_callbacks_t cb;
314 /* helper for sort function */
315 ipsec_spd_t *spd_to_sort;
318 extern ipsec_main_t ipsec_main;
320 extern vlib_node_registration_t esp4_encrypt_node;
321 extern vlib_node_registration_t esp4_decrypt_node;
322 extern vlib_node_registration_t ah4_encrypt_node;
323 extern vlib_node_registration_t ah4_decrypt_node;
324 extern vlib_node_registration_t esp6_encrypt_node;
325 extern vlib_node_registration_t esp6_decrypt_node;
326 extern vlib_node_registration_t ah6_encrypt_node;
327 extern vlib_node_registration_t ah6_decrypt_node;
328 extern vlib_node_registration_t ipsec_if_input_node;
334 int ipsec_set_interface_spd (vlib_main_t * vm, u32 sw_if_index, u32 spd_id,
336 int ipsec_add_del_spd (vlib_main_t * vm, u32 spd_id, int is_add);
337 int ipsec_add_del_policy (vlib_main_t * vm, ipsec_policy_t * policy,
339 int ipsec_add_del_sa (vlib_main_t * vm, ipsec_sa_t * new_sa, int is_add);
340 int ipsec_set_sa_key (vlib_main_t * vm, ipsec_sa_t * sa_update);
342 u32 ipsec_get_sa_index_by_sa_id (u32 sa_id);
343 u8 ipsec_is_sa_used (u32 sa_index);
344 u8 *format_ipsec_policy_action (u8 * s, va_list * args);
345 u8 *format_ipsec_crypto_alg (u8 * s, va_list * args);
346 u8 *format_ipsec_integ_alg (u8 * s, va_list * args);
347 u8 *format_ipsec_replay_window (u8 * s, va_list * args);
348 uword unformat_ipsec_policy_action (unformat_input_t * input, va_list * args);
349 uword unformat_ipsec_crypto_alg (unformat_input_t * input, va_list * args);
350 uword unformat_ipsec_integ_alg (unformat_input_t * input, va_list * args);
352 int ipsec_add_del_tunnel_if_internal (vnet_main_t * vnm,
353 ipsec_add_del_tunnel_args_t * args,
355 int ipsec_add_del_tunnel_if (ipsec_add_del_tunnel_args_t * args);
356 int ipsec_add_del_ipsec_gre_tunnel (vnet_main_t * vnm,
357 ipsec_add_del_ipsec_gre_tunnel_args_t *
359 int ipsec_set_interface_key (vnet_main_t * vnm, u32 hw_if_index,
360 ipsec_if_set_key_type_t type, u8 alg, u8 * key);
361 int ipsec_set_interface_sa (vnet_main_t * vnm, u32 hw_if_index, u32 sa_id,
370 ipsec_alloc_empty_buffers (vlib_main_t * vm, ipsec_main_t * im)
372 u32 thread_index = vm->thread_index;
373 uword l = vec_len (im->empty_buffers[thread_index]);
376 if (PREDICT_FALSE (l < VLIB_FRAME_SIZE))
378 if (!im->empty_buffers[thread_index])
380 vec_alloc (im->empty_buffers[thread_index], 2 * VLIB_FRAME_SIZE);
383 n_alloc = vlib_buffer_alloc (vm, im->empty_buffers[thread_index] + l,
384 2 * VLIB_FRAME_SIZE - l);
386 _vec_len (im->empty_buffers[thread_index]) = l + n_alloc;
390 static_always_inline u32
391 get_next_output_feature_node_index (vlib_buffer_t * b,
392 vlib_node_runtime_t * nr)
395 vlib_main_t *vm = vlib_get_main ();
396 vlib_node_t *node = vlib_get_node (vm, nr->node_index);
398 vnet_feature_next (&next, b);
399 return node->next_nodes[next];
402 #endif /* __IPSEC_H__ */
405 * fd.io coding-style-patch-verification: ON
408 * eval: (c-set-style "gnu")