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)
24 #define foreach_ipsec_output_next \
25 _(DROP, "error-drop") \
26 _(ESP_ENCRYPT, "esp-encrypt") \
27 _(AH_ENCRYPT, "ah-encrypt")
29 #define _(v, s) IPSEC_OUTPUT_NEXT_##v,
32 foreach_ipsec_output_next
35 } ipsec_output_next_t;
38 #define foreach_ipsec_input_next \
39 _(DROP, "error-drop") \
40 _(ESP_DECRYPT, "esp-decrypt") \
41 _(AH_DECRYPT, "ah-decrypt")
43 #define _(v, s) IPSEC_INPUT_NEXT_##v,
46 foreach_ipsec_input_next
52 #define foreach_ipsec_policy_action \
53 _(0, BYPASS, "bypass") \
54 _(1, DISCARD, "discard") \
55 _(2, RESOLVE, "resolve") \
56 _(3, PROTECT, "protect")
60 #define _(v,f,s) IPSEC_POLICY_ACTION_##f = v,
61 foreach_ipsec_policy_action
63 IPSEC_POLICY_N_ACTION,
64 } ipsec_policy_action_t;
66 #define foreach_ipsec_crypto_alg \
68 _(1, AES_CBC_128, "aes-cbc-128") \
69 _(2, AES_CBC_192, "aes-cbc-192") \
70 _(3, AES_CBC_256, "aes-cbc-256") \
71 _(4, AES_CTR_128, "aes-ctr-128") \
72 _(5, AES_CTR_192, "aes-ctr-192") \
73 _(6, AES_CTR_256, "aes-ctr-256") \
74 _(7, AES_GCM_128, "aes-gcm-128") \
75 _(8, AES_GCM_192, "aes-gcm-192") \
76 _(9, AES_GCM_256, "aes-gcm-256")
80 #define _(v,f,s) IPSEC_CRYPTO_ALG_##f = v,
81 foreach_ipsec_crypto_alg
86 #define foreach_ipsec_integ_alg \
88 _(1, MD5_96, "md5-96") /* RFC2403 */ \
89 _(2, SHA1_96, "sha1-96") /* RFC2404 */ \
90 _(3, SHA_256_96, "sha-256-96") /* draft-ietf-ipsec-ciph-sha-256-00 */ \
91 _(4, SHA_256_128, "sha-256-128") /* RFC4868 */ \
92 _(5, SHA_384_192, "sha-384-192") /* RFC4868 */ \
93 _(6, SHA_512_256, "sha-512-256") /* RFC4868 */
97 #define _(v,f,s) IPSEC_INTEG_ALG_##f = v,
98 foreach_ipsec_integ_alg
105 IPSEC_PROTOCOL_AH = 0,
106 IPSEC_PROTOCOL_ESP = 1
113 ipsec_protocol_t protocol;
115 ipsec_crypto_alg_t crypto_alg;
119 ipsec_integ_alg_t integ_alg;
128 ip46_address_t tunnel_src_addr;
129 ip46_address_t tunnel_dst_addr;
146 ip46_address_t start, stop;
147 } ip46_address_range_t;
159 ip4_address_t local_ip, remote_ip;
162 ipsec_crypto_alg_t crypto_alg;
163 u8 local_crypto_key_len;
164 u8 local_crypto_key[128];
165 u8 remote_crypto_key_len;
166 u8 remote_crypto_key[128];
167 ipsec_integ_alg_t integ_alg;
168 u8 local_integ_key_len;
169 u8 local_integ_key[128];
170 u8 remote_integ_key_len;
171 u8 remote_integ_key[128];
172 } ipsec_add_del_tunnel_args_t;
179 ip4_address_t local_ip;
180 ip4_address_t remote_ip;
181 } ipsec_add_del_ipsec_gre_tunnel_args_t;
185 IPSEC_IF_SET_KEY_TYPE_NONE,
186 IPSEC_IF_SET_KEY_TYPE_LOCAL_CRYPTO,
187 IPSEC_IF_SET_KEY_TYPE_REMOTE_CRYPTO,
188 IPSEC_IF_SET_KEY_TYPE_LOCAL_INTEG,
189 IPSEC_IF_SET_KEY_TYPE_REMOTE_INTEG,
190 } ipsec_if_set_key_type_t;
200 ip46_address_range_t laddr;
201 ip46_address_range_t raddr;
212 vlib_counter_t counter;
218 /* pool of policies */
219 ipsec_policy_t *policies;
220 /* vectors of policy indices */
221 u32 *ipv4_outbound_policies;
222 u32 *ipv6_outbound_policies;
223 u32 *ipv4_inbound_protect_policy_indices;
224 u32 *ipv4_inbound_policy_discard_and_bypass_indices;
225 u32 *ipv6_inbound_protect_policy_indices;
226 u32 *ipv6_inbound_policy_discard_and_bypass_indices;
232 } ip4_ipsec_config_t;
237 } ip6_ipsec_config_t;
248 clib_error_t *(*add_del_sa_sess_cb) (u32 sa_index, u8 is_add);
249 clib_error_t *(*check_support_cb) (ipsec_sa_t * sa);
250 } ipsec_main_callbacks_t;
254 /* pool of tunnel instances */
258 /* pool of tunnel interfaces */
259 ipsec_tunnel_if_t *tunnel_interfaces;
260 u32 *free_tunnel_if_indices;
264 uword *tunnel_index_by_key;
267 vlib_main_t *vlib_main;
268 vnet_main_t *vnet_main;
270 /* next node indices */
271 u32 feature_next_node_index[32];
274 uword *spd_index_by_spd_id;
275 uword *spd_index_by_sw_if_index;
276 uword *sa_index_by_sa_id;
277 uword *ipsec_if_pool_index_by_key;
280 u32 error_drop_node_index;
281 u32 esp_encrypt_node_index;
282 u32 esp_decrypt_node_index;
283 u32 ah_encrypt_node_index;
284 u32 ah_decrypt_node_index;
285 /* next node indeces */
286 u32 esp_encrypt_next_index;
287 u32 esp_decrypt_next_index;
288 u32 ah_encrypt_next_index;
289 u32 ah_decrypt_next_index;
292 ipsec_main_callbacks_t cb;
295 extern ipsec_main_t ipsec_main;
297 extern vlib_node_registration_t esp_encrypt_node;
298 extern vlib_node_registration_t esp_decrypt_node;
299 extern vlib_node_registration_t ah_encrypt_node;
300 extern vlib_node_registration_t ah_decrypt_node;
301 extern vlib_node_registration_t ipsec_if_output_node;
302 extern vlib_node_registration_t ipsec_if_input_node;
308 int ipsec_set_interface_spd (vlib_main_t * vm, u32 sw_if_index, u32 spd_id,
310 int ipsec_add_del_spd (vlib_main_t * vm, u32 spd_id, int is_add);
311 int ipsec_add_del_policy (vlib_main_t * vm, ipsec_policy_t * policy,
313 int ipsec_add_del_sa (vlib_main_t * vm, ipsec_sa_t * new_sa, int is_add);
314 int ipsec_set_sa_key (vlib_main_t * vm, ipsec_sa_t * sa_update);
316 u32 ipsec_get_sa_index_by_sa_id (u32 sa_id);
317 u8 ipsec_is_sa_used (u32 sa_index);
318 u8 *format_ipsec_if_output_trace (u8 * s, va_list * args);
319 u8 *format_ipsec_policy_action (u8 * s, va_list * args);
320 u8 *format_ipsec_crypto_alg (u8 * s, va_list * args);
321 u8 *format_ipsec_integ_alg (u8 * s, va_list * args);
322 u8 *format_ipsec_replay_window (u8 * s, va_list * args);
323 uword unformat_ipsec_policy_action (unformat_input_t * input, va_list * args);
324 uword unformat_ipsec_crypto_alg (unformat_input_t * input, va_list * args);
325 uword unformat_ipsec_integ_alg (unformat_input_t * input, va_list * args);
327 int ipsec_add_del_tunnel_if_internal (vnet_main_t * vnm,
328 ipsec_add_del_tunnel_args_t * args,
330 int ipsec_add_del_tunnel_if (ipsec_add_del_tunnel_args_t * args);
331 int ipsec_add_del_ipsec_gre_tunnel (vnet_main_t * vnm,
332 ipsec_add_del_ipsec_gre_tunnel_args_t *
334 int ipsec_set_interface_key (vnet_main_t * vnm, u32 hw_if_index,
335 ipsec_if_set_key_type_t type, u8 alg, u8 * key);
336 int ipsec_set_interface_sa (vnet_main_t * vnm, u32 hw_if_index, u32 sa_id,
345 ipsec_alloc_empty_buffers (vlib_main_t * vm, ipsec_main_t * im)
347 u32 thread_index = vlib_get_thread_index ();
348 uword l = vec_len (im->empty_buffers[thread_index]);
351 if (PREDICT_FALSE (l < VLIB_FRAME_SIZE))
353 if (!im->empty_buffers[thread_index])
355 vec_alloc (im->empty_buffers[thread_index], 2 * VLIB_FRAME_SIZE);
358 n_alloc = vlib_buffer_alloc (vm, im->empty_buffers[thread_index] + l,
359 2 * VLIB_FRAME_SIZE - l);
361 _vec_len (im->empty_buffers[thread_index]) = l + n_alloc;
365 static_always_inline u32
366 get_next_output_feature_node_index (vlib_buffer_t * b,
367 vlib_node_runtime_t * nr)
370 u32 sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_TX];
371 vlib_main_t *vm = vlib_get_main ();
372 vlib_node_t *node = vlib_get_node (vm, nr->node_index);
374 vnet_feature_next (sw_if_index, &next, b);
375 return node->next_nodes[next];
378 #endif /* __IPSEC_H__ */
381 * fd.io coding-style-patch-verification: ON
384 * eval: (c-set-style "gnu")