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 #include <vppinfra/bihash_8_16.h>
31 #include <vppinfra/bihash_24_16.h>
33 typedef clib_error_t *(*add_del_sa_sess_cb_t) (u32 sa_index, u8 is_add);
34 typedef clib_error_t *(*check_support_cb_t) (ipsec_sa_t * sa);
35 typedef clib_error_t *(*enable_disable_cb_t) (int is_enable);
39 u64 key[2]; // 16 bytes
43 } ipsec4_hash_kv_16_8_t;
49 ip4_address_t ip4_addr[2];
54 ipsec4_hash_kv_16_8_t kv_16_8;
55 } ipsec4_spd_5tuple_t;
61 ip4_address_t ip4_src_addr;
62 ip4_address_t ip4_dest_addr;
63 ipsec_spd_policy_type_t policy_type;
66 ipsec4_hash_kv_16_8_t kv_16_8;
67 } ipsec4_inbound_spd_tuple_t;
72 /* add/del callback */
73 add_del_sa_sess_cb_t add_del_sa_sess_cb;
74 /* check support function */
75 check_support_cb_t check_support_cb;
76 u32 ah4_encrypt_node_index;
77 u32 ah4_decrypt_node_index;
78 u32 ah4_encrypt_next_index;
79 u32 ah4_decrypt_next_index;
80 u32 ah6_encrypt_node_index;
81 u32 ah6_decrypt_node_index;
82 u32 ah6_encrypt_next_index;
83 u32 ah6_decrypt_next_index;
89 /* add/del callback */
90 add_del_sa_sess_cb_t add_del_sa_sess_cb;
91 /* check support function */
92 check_support_cb_t check_support_cb;
93 /* enable or disable function */
94 enable_disable_cb_t enable_disable_cb;
95 u32 esp4_encrypt_node_index;
96 u32 esp4_decrypt_node_index;
97 u32 esp4_encrypt_next_index;
98 u32 esp4_decrypt_next_index;
99 u32 esp6_encrypt_node_index;
100 u32 esp6_decrypt_node_index;
101 u32 esp6_encrypt_next_index;
102 u32 esp6_decrypt_next_index;
103 u32 esp4_decrypt_tun_node_index;
104 u32 esp4_decrypt_tun_next_index;
105 u32 esp4_encrypt_tun_node_index;
106 u32 esp6_decrypt_tun_node_index;
107 u32 esp6_decrypt_tun_next_index;
108 u32 esp6_encrypt_tun_node_index;
109 u32 esp_mpls_encrypt_tun_node_index;
110 } ipsec_esp_backend_t;
114 vnet_crypto_op_id_t enc_op_id;
115 vnet_crypto_op_id_t dec_op_id;
116 vnet_crypto_alg_t alg;
120 } ipsec_main_crypto_alg_t;
124 vnet_crypto_op_id_t op_id;
125 vnet_crypto_alg_t alg;
127 } ipsec_main_integ_alg_t;
131 CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
132 vnet_crypto_op_t *crypto_ops;
133 vnet_crypto_op_t *integ_ops;
134 vnet_crypto_op_t *chained_crypto_ops;
135 vnet_crypto_op_t *chained_integ_ops;
136 vnet_crypto_op_chunk_t *chunks;
137 vnet_crypto_async_frame_t **async_frames;
138 } ipsec_per_thread_data_t;
142 /* pool of tunnel instances */
144 /* pool of policies */
145 ipsec_policy_t *policies;
147 /* hash tables of UDP port registrations */
148 uword *udp_port_registrations;
150 uword *tunnel_index_by_key;
153 vlib_main_t *vlib_main;
154 vnet_main_t *vnet_main;
157 uword *spd_index_by_spd_id;
158 uword *spd_index_by_sw_if_index;
159 uword *sa_index_by_sa_id;
160 uword *ipsec4_if_pool_index_by_key;
161 uword *ipsec6_if_pool_index_by_key;
162 uword *ipsec_if_real_dev_by_show_dev;
163 uword *ipsec_if_by_sw_if_index;
165 ipsec4_hash_kv_16_8_t *ipsec4_out_spd_hash_tbl;
166 ipsec4_hash_kv_16_8_t *ipsec4_in_spd_hash_tbl;
167 clib_bihash_8_16_t tun4_protect_by_key;
168 clib_bihash_24_16_t tun6_protect_by_key;
171 u32 error_drop_node_index;
172 u32 esp4_encrypt_node_index;
173 u32 esp4_decrypt_node_index;
174 u32 esp4_decrypt_tun_node_index;
175 u32 esp4_encrypt_tun_node_index;
176 u32 ah4_encrypt_node_index;
177 u32 ah4_decrypt_node_index;
178 u32 esp6_encrypt_node_index;
179 u32 esp6_decrypt_node_index;
180 u32 esp6_decrypt_tun_node_index;
181 u32 esp6_encrypt_tun_node_index;
182 u32 esp_mpls_encrypt_tun_node_index;
183 u32 ah6_encrypt_node_index;
184 u32 ah6_decrypt_node_index;
185 /* next node indices */
186 u32 esp4_encrypt_next_index;
187 u32 esp4_decrypt_next_index;
188 u32 esp4_decrypt_tun_next_index;
189 u32 ah4_encrypt_next_index;
190 u32 ah4_decrypt_next_index;
191 u32 esp6_encrypt_next_index;
192 u32 esp6_decrypt_next_index;
193 u32 esp6_decrypt_tun_next_index;
194 u32 ah6_encrypt_next_index;
195 u32 ah6_decrypt_next_index;
197 /* pool of ah backends */
198 ipsec_ah_backend_t *ah_backends;
199 /* pool of esp backends */
200 ipsec_esp_backend_t *esp_backends;
201 /* index of current ah backend */
202 u32 ah_current_backend;
203 /* index of current esp backend */
204 u32 esp_current_backend;
205 /* index of default ah backend */
206 u32 ah_default_backend;
207 /* index of default esp backend */
208 u32 esp_default_backend;
210 /* crypto alg data */
211 ipsec_main_crypto_alg_t *crypto_algs;
213 /* crypto integ data */
214 ipsec_main_integ_alg_t *integ_algs;
216 /* per-thread data */
217 ipsec_per_thread_data_t *ptd;
219 /** Worker handoff */
220 u32 ah4_enc_fq_index;
221 u32 ah4_dec_fq_index;
222 u32 ah6_enc_fq_index;
223 u32 ah6_dec_fq_index;
225 u32 esp4_enc_fq_index;
226 u32 esp4_dec_fq_index;
227 u32 esp6_enc_fq_index;
228 u32 esp6_dec_fq_index;
229 u32 esp4_enc_tun_fq_index;
230 u32 esp6_enc_tun_fq_index;
231 u32 esp_mpls_enc_tun_fq_index;
232 u32 esp4_dec_tun_fq_index;
233 u32 esp6_dec_tun_fq_index;
235 /* Number of buckets for flow cache */
236 u32 ipsec4_out_spd_hash_num_buckets;
237 u32 ipsec4_out_spd_flow_cache_entries;
239 u8 output_flow_cache_flag;
241 u32 ipsec4_in_spd_hash_num_buckets;
242 u32 ipsec4_in_spd_flow_cache_entries;
243 u32 input_epoch_count;
244 u8 input_flow_cache_flag;
250 typedef enum ipsec_format_flags_t_
252 IPSEC_FORMAT_BRIEF = 0,
253 IPSEC_FORMAT_DETAIL = (1 << 0),
254 IPSEC_FORMAT_INSECURE = (1 << 1),
255 } ipsec_format_flags_t;
257 extern ipsec_main_t ipsec_main;
259 clib_error_t *ipsec_add_del_sa_sess_cb (ipsec_main_t * im, u32 sa_index,
262 clib_error_t *ipsec_check_support_cb (ipsec_main_t * im, ipsec_sa_t * sa);
264 extern vlib_node_registration_t ipsec4_tun_input_node;
265 extern vlib_node_registration_t ipsec6_tun_input_node;
275 static_always_inline u32
276 get_next_output_feature_node_index (vlib_buffer_t * b,
277 vlib_node_runtime_t * nr)
280 vlib_main_t *vm = vlib_get_main ();
281 vlib_node_t *node = vlib_get_node (vm, nr->node_index);
283 vnet_feature_next (&next, b);
284 return node->next_nodes[next];
287 static_always_inline u64
288 ipsec4_hash_16_8 (ipsec4_hash_kv_16_8_t *v)
290 #ifdef clib_crc32c_uses_intrinsics
291 return clib_crc32c ((u8 *) v->key, 16);
293 u64 tmp = v->key[0] ^ v->key[1];
294 return clib_xxhash (tmp);
298 static_always_inline int
299 ipsec4_hash_key_compare_16_8 (u64 *a, u64 *b)
301 #if defined(CLIB_HAVE_VEC128) && defined(CLIB_HAVE_VEC128_UNALIGNED_LOAD_STORE)
303 v = u64x2_load_unaligned (a) ^ u64x2_load_unaligned (b);
304 return u64x2_is_all_zero (v);
306 return ((a[0] ^ b[0]) | (a[1] ^ b[1])) == 0;
310 /* clib_spinlock_lock is not used to save another memory indirection */
311 static_always_inline void
312 ipsec_spinlock_lock (i32 *lock)
315 while (!clib_atomic_cmp_and_swap_acq_relax_n (lock, &free, 1, 0))
317 /* atomic load limits number of compare_exchange executions */
318 while (clib_atomic_load_relax_n (lock))
320 /* on failure, compare_exchange writes lock into free */
325 static_always_inline void
326 ipsec_spinlock_unlock (i32 *lock)
328 /* Make sure all reads/writes are complete before releasing the lock */
329 clib_atomic_release (lock);
332 u32 ipsec_register_ah_backend (vlib_main_t * vm, ipsec_main_t * im,
334 const char *ah4_encrypt_node_name,
335 const char *ah4_decrypt_node_name,
336 const char *ah6_encrypt_node_name,
337 const char *ah6_decrypt_node_name,
338 check_support_cb_t ah_check_support_cb,
339 add_del_sa_sess_cb_t ah_add_del_sa_sess_cb);
341 u32 ipsec_register_esp_backend (
342 vlib_main_t *vm, ipsec_main_t *im, const char *name,
343 const char *esp4_encrypt_node_name, const char *esp4_encrypt_tun_node_name,
344 const char *esp4_decrypt_node_name, const char *esp4_decrypt_tun_node_name,
345 const char *esp6_encrypt_node_name, const char *esp6_encrypt_tun_node_name,
346 const char *esp6_decrypt_node_name, const char *esp6_decrypt_tun_node_name,
347 const char *esp_mpls_encrypt_tun_node_name,
348 check_support_cb_t esp_check_support_cb,
349 add_del_sa_sess_cb_t esp_add_del_sa_sess_cb,
350 enable_disable_cb_t enable_disable_cb);
352 int ipsec_select_ah_backend (ipsec_main_t * im, u32 ah_backend_idx);
353 int ipsec_select_esp_backend (ipsec_main_t * im, u32 esp_backend_idx);
355 clib_error_t *ipsec_rsc_in_use (ipsec_main_t * im);
356 void ipsec_set_async_mode (u32 is_enabled);
358 extern void ipsec_register_udp_port (u16 udp_port);
359 extern void ipsec_unregister_udp_port (u16 udp_port);
361 #endif /* __IPSEC_H__ */
364 * fd.io coding-style-patch-verification: ON
367 * eval: (c-set-style "gnu")