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")
28 #define _(v, s) IPSEC_OUTPUT_NEXT_##v,
31 foreach_ipsec_output_next
34 } ipsec_output_next_t;
37 #define foreach_ipsec_input_next \
38 _(DROP, "error-drop") \
39 _(ESP_DECRYPT, "esp-decrypt")
41 #define _(v, s) IPSEC_INPUT_NEXT_##v,
44 foreach_ipsec_input_next
50 #define foreach_ipsec_policy_action \
51 _(0, BYPASS, "bypass") \
52 _(1, DISCARD, "discard") \
53 _(2, RESOLVE, "resolve") \
54 _(3, PROTECT, "protect")
58 #define _(v,f,s) IPSEC_POLICY_ACTION_##f = v,
59 foreach_ipsec_policy_action
61 IPSEC_POLICY_N_ACTION,
62 } ipsec_policy_action_t;
64 #define foreach_ipsec_crypto_alg \
66 _(1, AES_CBC_128, "aes-cbc-128") \
67 _(2, AES_CBC_192, "aes-cbc-192") \
68 _(3, AES_CBC_256, "aes-cbc-256") \
69 _(4, AES_CTR_128, "aes-ctr-128") \
70 _(5, AES_CTR_192, "aes-ctr-192") \
71 _(6, AES_CTR_256, "aes-ctr-256") \
72 _(7, AES_GCM_128, "aes-gcm-128") \
73 _(8, AES_GCM_192, "aes-gcm-192") \
74 _(9, AES_GCM_256, "aes-gcm-256")
78 #define _(v,f,s) IPSEC_CRYPTO_ALG_##f = v,
79 foreach_ipsec_crypto_alg
84 #define foreach_ipsec_integ_alg \
86 _(1, MD5_96, "md5-96") /* RFC2403 */ \
87 _(2, SHA1_96, "sha1-96") /* RFC2404 */ \
88 _(3, SHA_256_96, "sha-256-96") /* draft-ietf-ipsec-ciph-sha-256-00 */ \
89 _(4, SHA_256_128, "sha-256-128") /* RFC4868 */ \
90 _(5, SHA_384_192, "sha-384-192") /* RFC4868 */ \
91 _(6, SHA_512_256, "sha-512-256") /* RFC4868 */
95 #define _(v,f,s) IPSEC_INTEG_ALG_##f = v,
96 foreach_ipsec_integ_alg
103 IPSEC_PROTOCOL_AH = 0,
104 IPSEC_PROTOCOL_ESP = 1
111 ipsec_protocol_t protocol;
113 ipsec_crypto_alg_t crypto_alg;
117 ipsec_integ_alg_t integ_alg;
126 ip46_address_t tunnel_src_addr;
127 ip46_address_t tunnel_dst_addr;
144 ip46_address_t start, stop;
145 } ip46_address_range_t;
157 ip4_address_t local_ip, remote_ip;
160 ipsec_crypto_alg_t crypto_alg;
161 u8 local_crypto_key_len;
162 u8 local_crypto_key[128];
163 u8 remote_crypto_key_len;
164 u8 remote_crypto_key[128];
165 ipsec_integ_alg_t integ_alg;
166 u8 local_integ_key_len;
167 u8 local_integ_key[128];
168 u8 remote_integ_key_len;
169 u8 remote_integ_key[128];
170 } ipsec_add_del_tunnel_args_t;
177 ip4_address_t local_ip;
178 ip4_address_t remote_ip;
179 } ipsec_add_del_ipsec_gre_tunnel_args_t;
183 IPSEC_IF_SET_KEY_TYPE_NONE,
184 IPSEC_IF_SET_KEY_TYPE_LOCAL_CRYPTO,
185 IPSEC_IF_SET_KEY_TYPE_REMOTE_CRYPTO,
186 IPSEC_IF_SET_KEY_TYPE_LOCAL_INTEG,
187 IPSEC_IF_SET_KEY_TYPE_REMOTE_INTEG,
188 } ipsec_if_set_key_type_t;
198 ip46_address_range_t laddr;
199 ip46_address_range_t raddr;
210 vlib_counter_t counter;
216 /* pool of policies */
217 ipsec_policy_t *policies;
218 /* vectors of policy indices */
219 u32 *ipv4_outbound_policies;
220 u32 *ipv6_outbound_policies;
221 u32 *ipv4_inbound_protect_policy_indices;
222 u32 *ipv4_inbound_policy_discard_and_bypass_indices;
223 u32 *ipv6_inbound_protect_policy_indices;
224 u32 *ipv6_inbound_policy_discard_and_bypass_indices;
230 } ip4_ipsec_config_t;
235 } ip6_ipsec_config_t;
246 clib_error_t *(*add_del_sa_sess_cb) (u32 sa_index, u8 is_add);
247 clib_error_t *(*check_support_cb) (ipsec_sa_t * sa);
248 } ipsec_main_callbacks_t;
252 /* pool of tunnel instances */
256 /* pool of tunnel interfaces */
257 ipsec_tunnel_if_t *tunnel_interfaces;
258 u32 *free_tunnel_if_indices;
262 uword *tunnel_index_by_key;
265 vlib_main_t *vlib_main;
266 vnet_main_t *vnet_main;
268 /* next node indices */
269 u32 feature_next_node_index[32];
272 uword *spd_index_by_spd_id;
273 uword *spd_index_by_sw_if_index;
274 uword *sa_index_by_sa_id;
275 uword *ipsec_if_pool_index_by_key;
278 u32 error_drop_node_index;
279 u32 esp_encrypt_node_index;
280 u32 esp_decrypt_node_index;
281 /* next node indeces */
282 u32 esp_encrypt_next_index;
283 u32 esp_decrypt_next_index;
286 ipsec_main_callbacks_t cb;
289 ipsec_main_t ipsec_main;
291 extern vlib_node_registration_t esp_encrypt_node;
292 extern vlib_node_registration_t esp_decrypt_node;
293 extern vlib_node_registration_t ipsec_if_output_node;
294 extern vlib_node_registration_t ipsec_if_input_node;
300 int ipsec_set_interface_spd (vlib_main_t * vm, u32 sw_if_index, u32 spd_id,
302 int ipsec_add_del_spd (vlib_main_t * vm, u32 spd_id, int is_add);
303 int ipsec_add_del_policy (vlib_main_t * vm, ipsec_policy_t * policy,
305 int ipsec_add_del_sa (vlib_main_t * vm, ipsec_sa_t * new_sa, int is_add);
306 int ipsec_set_sa_key (vlib_main_t * vm, ipsec_sa_t * sa_update);
308 u32 ipsec_get_sa_index_by_sa_id (u32 sa_id);
309 u8 *format_ipsec_if_output_trace (u8 * s, va_list * args);
310 u8 *format_ipsec_policy_action (u8 * s, va_list * args);
311 u8 *format_ipsec_crypto_alg (u8 * s, va_list * args);
312 u8 *format_ipsec_integ_alg (u8 * s, va_list * args);
313 u8 *format_ipsec_replay_window (u8 * s, va_list * args);
314 uword unformat_ipsec_policy_action (unformat_input_t * input, va_list * args);
315 uword unformat_ipsec_crypto_alg (unformat_input_t * input, va_list * args);
316 uword unformat_ipsec_integ_alg (unformat_input_t * input, va_list * args);
318 int ipsec_add_del_tunnel_if_internal (vnet_main_t * vnm,
319 ipsec_add_del_tunnel_args_t * args,
321 int ipsec_add_del_tunnel_if (ipsec_add_del_tunnel_args_t * args);
322 int ipsec_add_del_ipsec_gre_tunnel (vnet_main_t * vnm,
323 ipsec_add_del_ipsec_gre_tunnel_args_t *
325 int ipsec_set_interface_key (vnet_main_t * vnm, u32 hw_if_index,
326 ipsec_if_set_key_type_t type, u8 alg, u8 * key);
334 ipsec_alloc_empty_buffers (vlib_main_t * vm, ipsec_main_t * im)
336 u32 thread_index = vlib_get_thread_index ();
337 uword l = vec_len (im->empty_buffers[thread_index]);
340 if (PREDICT_FALSE (l < VLIB_FRAME_SIZE))
342 if (!im->empty_buffers[thread_index])
344 vec_alloc (im->empty_buffers[thread_index], 2 * VLIB_FRAME_SIZE);
347 n_alloc = vlib_buffer_alloc (vm, im->empty_buffers[thread_index] + l,
348 2 * VLIB_FRAME_SIZE - l);
350 _vec_len (im->empty_buffers[thread_index]) = l + n_alloc;
354 static_always_inline u32
355 get_next_output_feature_node_index (vlib_buffer_t * b,
356 vlib_node_runtime_t * nr)
359 u32 sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_TX];
360 vlib_main_t *vm = vlib_get_main ();
361 vlib_node_t *node = vlib_get_node (vm, nr->node_index);
363 vnet_feature_next (sw_if_index, &next, b);
364 return node->next_nodes[next];
367 #endif /* __IPSEC_H__ */
370 * fd.io coding-style-patch-verification: ON
373 * eval: (c-set-style "gnu")