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/crypto/crypto.h>
20 #include <vnet/feature/feature.h>
22 #include <vppinfra/types.h>
23 #include <vppinfra/cache.h>
25 #include <vnet/ipsec/ipsec_spd.h>
26 #include <vnet/ipsec/ipsec_spd_policy.h>
27 #include <vnet/ipsec/ipsec_sa.h>
29 typedef clib_error_t *(*add_del_sa_sess_cb_t) (u32 sa_index, u8 is_add);
30 typedef clib_error_t *(*check_support_cb_t) (ipsec_sa_t * sa);
35 /* add/del callback */
36 add_del_sa_sess_cb_t add_del_sa_sess_cb;
37 /* check support function */
38 check_support_cb_t check_support_cb;
39 u32 ah4_encrypt_node_index;
40 u32 ah4_decrypt_node_index;
41 u32 ah4_encrypt_next_index;
42 u32 ah4_decrypt_next_index;
43 u32 ah6_encrypt_node_index;
44 u32 ah6_decrypt_node_index;
45 u32 ah6_encrypt_next_index;
46 u32 ah6_decrypt_next_index;
52 /* add/del callback */
53 add_del_sa_sess_cb_t add_del_sa_sess_cb;
54 /* check support function */
55 check_support_cb_t check_support_cb;
56 u32 esp4_encrypt_node_index;
57 u32 esp4_decrypt_node_index;
58 u32 esp4_encrypt_next_index;
59 u32 esp4_decrypt_next_index;
60 u32 esp6_encrypt_node_index;
61 u32 esp6_decrypt_node_index;
62 u32 esp6_encrypt_next_index;
63 u32 esp6_decrypt_next_index;
64 u32 esp4_encrypt_tun_feature_index;
65 u32 esp6_encrypt_tun_feature_index;
66 } ipsec_esp_backend_t;
70 vnet_crypto_op_id_t enc_op_id;
71 vnet_crypto_op_id_t dec_op_id;
72 vnet_crypto_alg_t alg;
76 } ipsec_main_crypto_alg_t;
80 vnet_crypto_op_id_t op_id;
81 vnet_crypto_alg_t alg;
83 } ipsec_main_integ_alg_t;
87 vnet_crypto_op_t *crypto_ops;
88 vnet_crypto_op_t *integ_ops;
89 } ipsec_per_thread_data_t;
93 /* pool of tunnel instances */
95 /* Pool of security associations */
97 /* pool of policies */
98 ipsec_policy_t *policies;
100 uword *tunnel_index_by_key;
103 vlib_main_t *vlib_main;
104 vnet_main_t *vnet_main;
107 uword *spd_index_by_spd_id;
108 uword *spd_index_by_sw_if_index;
109 uword *sa_index_by_sa_id;
110 uword *ipsec4_if_pool_index_by_key;
111 uword *ipsec6_if_pool_index_by_key;
112 uword *ipsec_if_real_dev_by_show_dev;
113 uword *ipsec_if_by_sw_if_index;
114 uword *tun4_protect_by_key;
115 uword *tun6_protect_by_key;
118 u32 error_drop_node_index;
119 u32 esp4_encrypt_node_index;
120 u32 esp4_decrypt_node_index;
121 u32 ah4_encrypt_node_index;
122 u32 ah4_decrypt_node_index;
123 u32 esp6_encrypt_node_index;
124 u32 esp6_decrypt_node_index;
125 u32 ah6_encrypt_node_index;
126 u32 ah6_decrypt_node_index;
127 /* next node indices */
128 u32 esp4_encrypt_next_index;
129 u32 esp4_decrypt_next_index;
130 u32 ah4_encrypt_next_index;
131 u32 ah4_decrypt_next_index;
132 u32 esp6_encrypt_next_index;
133 u32 esp6_decrypt_next_index;
134 u32 ah6_encrypt_next_index;
135 u32 ah6_decrypt_next_index;
137 /* tun encrypt arcs and feature nodes */
138 u32 esp4_encrypt_tun_feature_index;
139 u32 esp6_encrypt_tun_feature_index;
141 /* tun nodes to drop packets when no crypto alg set on outbound SA */
142 u32 esp4_no_crypto_tun_feature_index;
143 u32 esp6_no_crypto_tun_feature_index;
145 /* pool of ah backends */
146 ipsec_ah_backend_t *ah_backends;
147 /* pool of esp backends */
148 ipsec_esp_backend_t *esp_backends;
149 /* index of current ah backend */
150 u32 ah_current_backend;
151 /* index of current esp backend */
152 u32 esp_current_backend;
153 /* index of default ah backend */
154 u32 ah_default_backend;
155 /* index of default esp backend */
156 u32 esp_default_backend;
158 /* crypto alg data */
159 ipsec_main_crypto_alg_t *crypto_algs;
161 /* crypto integ data */
162 ipsec_main_integ_alg_t *integ_algs;
164 /* per-thread data */
165 ipsec_per_thread_data_t *ptd;
167 /** Worker handoff */
168 u32 ah4_enc_fq_index;
169 u32 ah4_dec_fq_index;
170 u32 ah6_enc_fq_index;
171 u32 ah6_dec_fq_index;
173 u32 esp4_enc_fq_index;
174 u32 esp4_dec_fq_index;
175 u32 esp6_enc_fq_index;
176 u32 esp6_dec_fq_index;
177 u32 esp4_enc_tun_fq_index;
178 u32 esp6_enc_tun_fq_index;
179 u32 esp4_dec_tun_fq_index;
180 u32 esp6_dec_tun_fq_index;
183 typedef enum ipsec_format_flags_t_
185 IPSEC_FORMAT_BRIEF = 0,
186 IPSEC_FORMAT_DETAIL = (1 << 0),
187 IPSEC_FORMAT_INSECURE = (1 << 1),
188 } ipsec_format_flags_t;
190 extern ipsec_main_t ipsec_main;
192 clib_error_t *ipsec_add_del_sa_sess_cb (ipsec_main_t * im, u32 sa_index,
195 clib_error_t *ipsec_check_support_cb (ipsec_main_t * im, ipsec_sa_t * sa);
197 extern vlib_node_registration_t ah4_encrypt_node;
198 extern vlib_node_registration_t ah4_decrypt_node;
199 extern vlib_node_registration_t ah6_encrypt_node;
200 extern vlib_node_registration_t ah6_decrypt_node;
201 extern vlib_node_registration_t esp4_encrypt_node;
202 extern vlib_node_registration_t esp4_decrypt_node;
203 extern vlib_node_registration_t esp6_encrypt_node;
204 extern vlib_node_registration_t esp6_decrypt_node;
205 extern vlib_node_registration_t esp4_encrypt_tun_node;
206 extern vlib_node_registration_t esp6_encrypt_tun_node;
207 extern vlib_node_registration_t esp4_decrypt_tun_node;
208 extern vlib_node_registration_t esp6_decrypt_tun_node;
209 extern vlib_node_registration_t ipsec4_if_input_node;
210 extern vlib_node_registration_t ipsec6_if_input_node;
215 u8 *format_ipsec_replay_window (u8 * s, va_list * args);
221 static_always_inline u32
222 get_next_output_feature_node_index (vlib_buffer_t * b,
223 vlib_node_runtime_t * nr)
226 vlib_main_t *vm = vlib_get_main ();
227 vlib_node_t *node = vlib_get_node (vm, nr->node_index);
229 vnet_feature_next (&next, b);
230 return node->next_nodes[next];
233 u32 ipsec_register_ah_backend (vlib_main_t * vm, ipsec_main_t * im,
235 const char *ah4_encrypt_node_name,
236 const char *ah4_decrypt_node_name,
237 const char *ah6_encrypt_node_name,
238 const char *ah6_decrypt_node_name,
239 check_support_cb_t ah_check_support_cb,
240 add_del_sa_sess_cb_t ah_add_del_sa_sess_cb);
242 u32 ipsec_register_esp_backend (vlib_main_t * vm, ipsec_main_t * im,
244 const char *esp4_encrypt_node_name,
245 const char *esp4_encrypt_tun_node_name,
246 const char *esp4_decrypt_node_name,
247 const char *esp6_encrypt_node_name,
248 const char *esp6_encrypt_tun_node_name,
249 const char *esp6_decrypt_node_name,
250 check_support_cb_t esp_check_support_cb,
251 add_del_sa_sess_cb_t esp_add_del_sa_sess_cb);
253 int ipsec_select_ah_backend (ipsec_main_t * im, u32 ah_backend_idx);
254 int ipsec_select_esp_backend (ipsec_main_t * im, u32 esp_backend_idx);
256 clib_error_t *ipsec_rsc_in_use (ipsec_main_t * im);
258 always_inline ipsec_sa_t *
259 ipsec_sa_get (u32 sa_index)
261 return (pool_elt_at_index (ipsec_main.sad, sa_index));
264 void ipsec_add_feature (const char *arc_name, const char *node_name,
265 u32 * out_feature_index);
268 #endif /* __IPSEC_H__ */
271 * fd.io coding-style-patch-verification: ON
274 * eval: (c-set-style "gnu")