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);
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;
60 /* add/del callback */
61 add_del_sa_sess_cb_t add_del_sa_sess_cb;
62 /* check support function */
63 check_support_cb_t check_support_cb;
64 u32 ah4_encrypt_node_index;
65 u32 ah4_decrypt_node_index;
66 u32 ah4_encrypt_next_index;
67 u32 ah4_decrypt_next_index;
68 u32 ah6_encrypt_node_index;
69 u32 ah6_decrypt_node_index;
70 u32 ah6_encrypt_next_index;
71 u32 ah6_decrypt_next_index;
77 /* add/del callback */
78 add_del_sa_sess_cb_t add_del_sa_sess_cb;
79 /* check support function */
80 check_support_cb_t check_support_cb;
81 /* enable or disable function */
82 enable_disable_cb_t enable_disable_cb;
83 u32 esp4_encrypt_node_index;
84 u32 esp4_decrypt_node_index;
85 u32 esp4_encrypt_next_index;
86 u32 esp4_decrypt_next_index;
87 u32 esp6_encrypt_node_index;
88 u32 esp6_decrypt_node_index;
89 u32 esp6_encrypt_next_index;
90 u32 esp6_decrypt_next_index;
91 u32 esp4_decrypt_tun_node_index;
92 u32 esp4_decrypt_tun_next_index;
93 u32 esp4_encrypt_tun_node_index;
94 u32 esp6_decrypt_tun_node_index;
95 u32 esp6_decrypt_tun_next_index;
96 u32 esp6_encrypt_tun_node_index;
97 u32 esp_mpls_encrypt_tun_node_index;
98 } ipsec_esp_backend_t;
102 vnet_crypto_op_id_t enc_op_id;
103 vnet_crypto_op_id_t dec_op_id;
104 vnet_crypto_alg_t alg;
108 } ipsec_main_crypto_alg_t;
112 vnet_crypto_op_id_t op_id;
113 vnet_crypto_alg_t alg;
115 } ipsec_main_integ_alg_t;
119 CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
120 vnet_crypto_op_t *crypto_ops;
121 vnet_crypto_op_t *integ_ops;
122 vnet_crypto_op_t *chained_crypto_ops;
123 vnet_crypto_op_t *chained_integ_ops;
124 vnet_crypto_op_chunk_t *chunks;
125 vnet_crypto_async_frame_t **async_frames;
126 } ipsec_per_thread_data_t;
130 /* pool of tunnel instances */
132 /* pool of policies */
133 ipsec_policy_t *policies;
135 /* hash tables of UDP port registrations */
136 uword *udp_port_registrations;
138 uword *tunnel_index_by_key;
141 vlib_main_t *vlib_main;
142 vnet_main_t *vnet_main;
145 uword *spd_index_by_spd_id;
146 uword *spd_index_by_sw_if_index;
147 uword *sa_index_by_sa_id;
148 uword *ipsec4_if_pool_index_by_key;
149 uword *ipsec6_if_pool_index_by_key;
150 uword *ipsec_if_real_dev_by_show_dev;
151 uword *ipsec_if_by_sw_if_index;
153 ipsec4_hash_kv_16_8_t *ipsec4_out_spd_hash_tbl;
154 clib_bihash_8_16_t tun4_protect_by_key;
155 clib_bihash_24_16_t tun6_protect_by_key;
158 u32 error_drop_node_index;
159 u32 esp4_encrypt_node_index;
160 u32 esp4_decrypt_node_index;
161 u32 esp4_decrypt_tun_node_index;
162 u32 esp4_encrypt_tun_node_index;
163 u32 ah4_encrypt_node_index;
164 u32 ah4_decrypt_node_index;
165 u32 esp6_encrypt_node_index;
166 u32 esp6_decrypt_node_index;
167 u32 esp6_decrypt_tun_node_index;
168 u32 esp6_encrypt_tun_node_index;
169 u32 esp_mpls_encrypt_tun_node_index;
170 u32 ah6_encrypt_node_index;
171 u32 ah6_decrypt_node_index;
172 /* next node indices */
173 u32 esp4_encrypt_next_index;
174 u32 esp4_decrypt_next_index;
175 u32 esp4_decrypt_tun_next_index;
176 u32 ah4_encrypt_next_index;
177 u32 ah4_decrypt_next_index;
178 u32 esp6_encrypt_next_index;
179 u32 esp6_decrypt_next_index;
180 u32 esp6_decrypt_tun_next_index;
181 u32 ah6_encrypt_next_index;
182 u32 ah6_decrypt_next_index;
184 /* tun nodes to drop packets when no crypto alg set on outbound SA */
185 u32 esp4_no_crypto_tun_node_index;
186 u32 esp6_no_crypto_tun_node_index;
188 /* tun nodes for encrypt on L2 interfaces */
189 u32 esp4_encrypt_l2_tun_node_index;
190 u32 esp6_encrypt_l2_tun_node_index;
192 /* pool of ah backends */
193 ipsec_ah_backend_t *ah_backends;
194 /* pool of esp backends */
195 ipsec_esp_backend_t *esp_backends;
196 /* index of current ah backend */
197 u32 ah_current_backend;
198 /* index of current esp backend */
199 u32 esp_current_backend;
200 /* index of default ah backend */
201 u32 ah_default_backend;
202 /* index of default esp backend */
203 u32 esp_default_backend;
205 /* crypto alg data */
206 ipsec_main_crypto_alg_t *crypto_algs;
208 /* crypto integ data */
209 ipsec_main_integ_alg_t *integ_algs;
211 /* per-thread data */
212 ipsec_per_thread_data_t *ptd;
214 /** Worker handoff */
215 u32 ah4_enc_fq_index;
216 u32 ah4_dec_fq_index;
217 u32 ah6_enc_fq_index;
218 u32 ah6_dec_fq_index;
220 u32 esp4_enc_fq_index;
221 u32 esp4_dec_fq_index;
222 u32 esp6_enc_fq_index;
223 u32 esp6_dec_fq_index;
224 u32 esp4_enc_tun_fq_index;
225 u32 esp6_enc_tun_fq_index;
226 u32 esp_mpls_enc_tun_fq_index;
227 u32 esp4_dec_tun_fq_index;
228 u32 esp6_dec_tun_fq_index;
230 /* Number of buckets for flow cache */
231 u32 ipsec4_out_spd_hash_num_buckets;
232 u32 ipsec4_out_spd_flow_cache_entries;
239 typedef enum ipsec_format_flags_t_
241 IPSEC_FORMAT_BRIEF = 0,
242 IPSEC_FORMAT_DETAIL = (1 << 0),
243 IPSEC_FORMAT_INSECURE = (1 << 1),
244 } ipsec_format_flags_t;
246 extern ipsec_main_t ipsec_main;
248 clib_error_t *ipsec_add_del_sa_sess_cb (ipsec_main_t * im, u32 sa_index,
251 clib_error_t *ipsec_check_support_cb (ipsec_main_t * im, ipsec_sa_t * sa);
253 extern vlib_node_registration_t ipsec4_tun_input_node;
254 extern vlib_node_registration_t ipsec6_tun_input_node;
264 static_always_inline u32
265 get_next_output_feature_node_index (vlib_buffer_t * b,
266 vlib_node_runtime_t * nr)
269 vlib_main_t *vm = vlib_get_main ();
270 vlib_node_t *node = vlib_get_node (vm, nr->node_index);
272 vnet_feature_next (&next, b);
273 return node->next_nodes[next];
276 static_always_inline u64
277 ipsec4_hash_16_8 (ipsec4_hash_kv_16_8_t *v)
279 #ifdef clib_crc32c_uses_intrinsics
280 return clib_crc32c ((u8 *) v->key, 16);
282 u64 tmp = v->key[0] ^ v->key[1];
283 return clib_xxhash (tmp);
287 static_always_inline int
288 ipsec4_hash_key_compare_16_8 (u64 *a, u64 *b)
290 #if defined(CLIB_HAVE_VEC128) && defined(CLIB_HAVE_VEC128_UNALIGNED_LOAD_STORE)
292 v = u64x2_load_unaligned (a) ^ u64x2_load_unaligned (b);
293 return u64x2_is_all_zero (v);
295 return ((a[0] ^ b[0]) | (a[1] ^ b[1])) == 0;
299 /* clib_spinlock_lock is not used to save another memory indirection */
300 static_always_inline void
301 ipsec_spinlock_lock (i32 *lock)
304 while (!clib_atomic_cmp_and_swap_acq_relax_n (lock, &free, 1, 0))
306 /* atomic load limits number of compare_exchange executions */
307 while (clib_atomic_load_relax_n (lock))
309 /* on failure, compare_exchange writes lock into free */
314 static_always_inline void
315 ipsec_spinlock_unlock (i32 *lock)
317 /* Make sure all reads/writes are complete before releasing the lock */
318 clib_atomic_release (lock);
321 u32 ipsec_register_ah_backend (vlib_main_t * vm, ipsec_main_t * im,
323 const char *ah4_encrypt_node_name,
324 const char *ah4_decrypt_node_name,
325 const char *ah6_encrypt_node_name,
326 const char *ah6_decrypt_node_name,
327 check_support_cb_t ah_check_support_cb,
328 add_del_sa_sess_cb_t ah_add_del_sa_sess_cb);
330 u32 ipsec_register_esp_backend (
331 vlib_main_t *vm, ipsec_main_t *im, const char *name,
332 const char *esp4_encrypt_node_name, const char *esp4_encrypt_tun_node_name,
333 const char *esp4_decrypt_node_name, const char *esp4_decrypt_tun_node_name,
334 const char *esp6_encrypt_node_name, const char *esp6_encrypt_tun_node_name,
335 const char *esp6_decrypt_node_name, const char *esp6_decrypt_tun_node_name,
336 const char *esp_mpls_encrypt_tun_node_name,
337 check_support_cb_t esp_check_support_cb,
338 add_del_sa_sess_cb_t esp_add_del_sa_sess_cb,
339 enable_disable_cb_t enable_disable_cb);
341 int ipsec_select_ah_backend (ipsec_main_t * im, u32 ah_backend_idx);
342 int ipsec_select_esp_backend (ipsec_main_t * im, u32 esp_backend_idx);
344 clib_error_t *ipsec_rsc_in_use (ipsec_main_t * im);
345 void ipsec_set_async_mode (u32 is_enabled);
347 extern void ipsec_register_udp_port (u16 udp_port);
348 extern void ipsec_unregister_udp_port (u16 udp_port);
350 #endif /* __IPSEC_H__ */
353 * fd.io coding-style-patch-verification: ON
356 * eval: (c-set-style "gnu")