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 #include <vnet/ipsec/ipsec_spd.h>
29 #include <vnet/ipsec/ipsec_spd_policy.h>
30 #include <vnet/ipsec/ipsec_sa.h>
31 #include <vnet/ipsec/ipsec_if.h>
32 #include <vnet/ipsec/ipsec_io.h>
34 typedef clib_error_t *(*add_del_sa_sess_cb_t) (u32 sa_index, u8 is_add);
35 typedef clib_error_t *(*check_support_cb_t) (ipsec_sa_t * sa);
40 /* add/del callback */
41 add_del_sa_sess_cb_t add_del_sa_sess_cb;
42 /* check support function */
43 check_support_cb_t check_support_cb;
44 u32 ah4_encrypt_node_index;
45 u32 ah4_decrypt_node_index;
46 u32 ah4_encrypt_next_index;
47 u32 ah4_decrypt_next_index;
48 u32 ah6_encrypt_node_index;
49 u32 ah6_decrypt_node_index;
50 u32 ah6_encrypt_next_index;
51 u32 ah6_decrypt_next_index;
57 /* add/del callback */
58 add_del_sa_sess_cb_t add_del_sa_sess_cb;
59 /* check support function */
60 check_support_cb_t check_support_cb;
61 u32 esp4_encrypt_node_index;
62 u32 esp4_decrypt_node_index;
63 u32 esp4_encrypt_next_index;
64 u32 esp4_decrypt_next_index;
65 u32 esp6_encrypt_node_index;
66 u32 esp6_decrypt_node_index;
67 u32 esp6_encrypt_next_index;
68 u32 esp6_decrypt_next_index;
69 } ipsec_esp_backend_t;
73 const EVP_CIPHER *type;
76 } ipsec_proto_main_crypto_alg_t;
82 } ipsec_proto_main_integ_alg_t;
86 CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
87 #if OPENSSL_VERSION_NUMBER >= 0x10100000L
88 EVP_CIPHER_CTX *encrypt_ctx;
90 EVP_CIPHER_CTX encrypt_ctx;
92 CLIB_CACHE_LINE_ALIGN_MARK (cacheline1);
93 #if OPENSSL_VERSION_NUMBER >= 0x10100000L
94 EVP_CIPHER_CTX *decrypt_ctx;
96 EVP_CIPHER_CTX decrypt_ctx;
98 CLIB_CACHE_LINE_ALIGN_MARK (cacheline2);
99 #if OPENSSL_VERSION_NUMBER >= 0x10100000L
104 ipsec_crypto_alg_t last_encrypt_alg;
105 ipsec_crypto_alg_t last_decrypt_alg;
106 ipsec_integ_alg_t last_integ_alg;
107 } ipsec_proto_main_per_thread_data_t;
111 ipsec_proto_main_crypto_alg_t *ipsec_proto_main_crypto_algs;
112 ipsec_proto_main_integ_alg_t *ipsec_proto_main_integ_algs;
113 ipsec_proto_main_per_thread_data_t *per_thread_data;
114 } ipsec_proto_main_t;
116 extern ipsec_proto_main_t ipsec_proto_main;
120 /* pool of tunnel instances */
122 /* Pool of security associations */
124 /* pool of policies */
125 ipsec_policy_t *policies;
127 /* pool of tunnel interfaces */
128 ipsec_tunnel_if_t *tunnel_interfaces;
132 uword *tunnel_index_by_key;
135 vlib_main_t *vlib_main;
136 vnet_main_t *vnet_main;
139 uword *spd_index_by_spd_id;
140 uword *spd_index_by_sw_if_index;
141 uword *sa_index_by_sa_id;
142 uword *ipsec_if_pool_index_by_key;
143 uword *ipsec_if_real_dev_by_show_dev;
146 u32 error_drop_node_index;
147 u32 esp4_encrypt_node_index;
148 u32 esp4_decrypt_node_index;
149 u32 ah4_encrypt_node_index;
150 u32 ah4_decrypt_node_index;
151 u32 esp6_encrypt_node_index;
152 u32 esp6_decrypt_node_index;
153 u32 ah6_encrypt_node_index;
154 u32 ah6_decrypt_node_index;
155 /* next node indices */
156 u32 esp4_encrypt_next_index;
157 u32 esp4_decrypt_next_index;
158 u32 ah4_encrypt_next_index;
159 u32 ah4_decrypt_next_index;
160 u32 esp6_encrypt_next_index;
161 u32 esp6_decrypt_next_index;
162 u32 ah6_encrypt_next_index;
163 u32 ah6_decrypt_next_index;
165 /* pool of ah backends */
166 ipsec_ah_backend_t *ah_backends;
167 /* pool of esp backends */
168 ipsec_esp_backend_t *esp_backends;
169 /* index of current ah backend */
170 u32 ah_current_backend;
171 /* index of current esp backend */
172 u32 esp_current_backend;
173 /* index of default ah backend */
174 u32 ah_default_backend;
175 /* index of default esp backend */
176 u32 esp_default_backend;
179 extern ipsec_main_t ipsec_main;
181 clib_error_t *ipsec_add_del_sa_sess_cb (ipsec_main_t * im, u32 sa_index,
184 clib_error_t *ipsec_check_support_cb (ipsec_main_t * im, ipsec_sa_t * sa);
186 extern vlib_node_registration_t esp4_encrypt_node;
187 extern vlib_node_registration_t esp4_decrypt_node;
188 extern vlib_node_registration_t ah4_encrypt_node;
189 extern vlib_node_registration_t ah4_decrypt_node;
190 extern vlib_node_registration_t esp6_encrypt_node;
191 extern vlib_node_registration_t esp6_decrypt_node;
192 extern vlib_node_registration_t ah6_encrypt_node;
193 extern vlib_node_registration_t ah6_decrypt_node;
194 extern vlib_node_registration_t ipsec_if_input_node;
199 u8 *format_ipsec_replay_window (u8 * s, va_list * args);
206 ipsec_alloc_empty_buffers (vlib_main_t * vm, ipsec_main_t * im)
208 u32 thread_index = vm->thread_index;
209 uword l = vec_len (im->empty_buffers[thread_index]);
212 if (PREDICT_FALSE (l < VLIB_FRAME_SIZE))
214 if (!im->empty_buffers[thread_index])
216 vec_alloc (im->empty_buffers[thread_index], 2 * VLIB_FRAME_SIZE);
219 n_alloc = vlib_buffer_alloc (vm, im->empty_buffers[thread_index] + l,
220 2 * VLIB_FRAME_SIZE - l);
222 _vec_len (im->empty_buffers[thread_index]) = l + n_alloc;
226 static_always_inline u32
227 get_next_output_feature_node_index (vlib_buffer_t * b,
228 vlib_node_runtime_t * nr)
231 vlib_main_t *vm = vlib_get_main ();
232 vlib_node_t *node = vlib_get_node (vm, nr->node_index);
234 vnet_feature_next (&next, b);
235 return node->next_nodes[next];
238 u32 ipsec_register_ah_backend (vlib_main_t * vm, ipsec_main_t * im,
240 const char *ah4_encrypt_node_name,
241 const char *ah4_decrypt_node_name,
242 const char *ah6_encrypt_node_name,
243 const char *ah6_decrypt_node_name,
244 check_support_cb_t ah_check_support_cb,
245 add_del_sa_sess_cb_t ah_add_del_sa_sess_cb);
247 u32 ipsec_register_esp_backend (vlib_main_t * vm, ipsec_main_t * im,
249 const char *esp4_encrypt_node_name,
250 const char *esp4_decrypt_node_name,
251 const char *esp6_encrypt_node_name,
252 const char *esp6_decrypt_node_name,
253 check_support_cb_t esp_check_support_cb,
254 add_del_sa_sess_cb_t esp_add_del_sa_sess_cb);
256 int ipsec_select_ah_backend (ipsec_main_t * im, u32 ah_backend_idx);
257 int ipsec_select_esp_backend (ipsec_main_t * im, u32 esp_backend_idx);
258 #endif /* __IPSEC_H__ */
261 * fd.io coding-style-patch-verification: ON
264 * eval: (c-set-style "gnu")