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.
15 #define IPSEC_FLAG_IPSEC_GRE_TUNNEL (1 << 0)
17 #define foreach_ipsec_policy_action \
18 _(0, BYPASS, "bypass") \
19 _(1, DISCARD, "discard") \
20 _(2, RESOLVE, "resolve") \
21 _(3, PROTECT, "protect")
25 #define _(v,f,s) IPSEC_POLICY_ACTION_##f = v,
26 foreach_ipsec_policy_action
28 IPSEC_POLICY_N_ACTION,
29 } ipsec_policy_action_t;
31 #define foreach_ipsec_crypto_alg \
33 _(1, AES_CBC_128, "aes-cbc-128") \
34 _(2, AES_CBC_192, "aes-cbc-192") \
35 _(3, AES_CBC_256, "aes-cbc-256")
39 #define _(v,f,s) IPSEC_CRYPTO_ALG_##f = v,
40 foreach_ipsec_crypto_alg
45 #define foreach_ipsec_integ_alg \
47 _(1, MD5_96, "md5-96") /* RFC2403 */ \
48 _(2, SHA1_96, "sha1-96") /* RFC2404 */ \
49 _(3, SHA_256_96, "sha-256-96") /* draft-ietf-ipsec-ciph-sha-256-00 */ \
50 _(4, SHA_256_128, "sha-256-128") /* RFC4868 */ \
51 _(5, SHA_384_192, "sha-384-192") /* RFC4868 */ \
52 _(6, SHA_512_256, "sha-512-256") /* RFC4868 */
56 #define _(v,f,s) IPSEC_INTEG_ALG_##f = v,
57 foreach_ipsec_integ_alg
64 IPSEC_PROTOCOL_AH = 0,
65 IPSEC_PROTOCOL_ESP = 1
72 ipsec_protocol_t protocol;
74 ipsec_crypto_alg_t crypto_alg;
78 ipsec_integ_alg_t integ_alg;
87 ip46_address_t tunnel_src_addr;
88 ip46_address_t tunnel_dst_addr;
100 ip46_address_t start, stop;
101 } ip46_address_range_t;
113 ip4_address_t local_ip, remote_ip;
116 ipsec_crypto_alg_t crypto_alg;
117 u8 local_crypto_key_len;
118 u8 local_crypto_key[128];
119 u8 remote_crypto_key_len;
120 u8 remote_crypto_key[128];
121 ipsec_integ_alg_t integ_alg;
122 u8 local_integ_key_len;
123 u8 local_integ_key[128];
124 u8 remote_integ_key_len;
125 u8 remote_integ_key[128];
126 } ipsec_add_del_tunnel_args_t;
133 ip4_address_t local_ip;
134 ip4_address_t remote_ip;
135 } ipsec_add_del_ipsec_gre_tunnel_args_t;
139 IPSEC_IF_SET_KEY_TYPE_NONE,
140 IPSEC_IF_SET_KEY_TYPE_LOCAL_CRYPTO,
141 IPSEC_IF_SET_KEY_TYPE_REMOTE_CRYPTO,
142 IPSEC_IF_SET_KEY_TYPE_LOCAL_INTEG,
143 IPSEC_IF_SET_KEY_TYPE_REMOTE_INTEG,
144 } ipsec_if_set_key_type_t;
154 ip46_address_range_t laddr;
155 ip46_address_range_t raddr;
166 vlib_counter_t counter;
172 /* pool of policies */
173 ipsec_policy_t *policies;
174 /* vectors of policy indices */
175 u32 *ipv4_outbound_policies;
176 u32 *ipv6_outbound_policies;
177 u32 *ipv4_inbound_protect_policy_indices;
178 u32 *ipv4_inbound_policy_discard_and_bypass_indices;
179 u32 *ipv6_inbound_protect_policy_indices;
180 u32 *ipv6_inbound_policy_discard_and_bypass_indices;
186 } ip4_ipsec_config_t;
191 } ip6_ipsec_config_t;
202 /* pool of tunnel instances */
206 /* pool of tunnel interfaces */
207 ipsec_tunnel_if_t *tunnel_interfaces;
208 u32 *free_tunnel_if_indices;
212 uword *tunnel_index_by_key;
215 vlib_main_t *vlib_main;
216 vnet_main_t *vnet_main;
218 /* next node indices */
219 u32 feature_next_node_index[32];
222 uword *spd_index_by_spd_id;
223 uword *spd_index_by_sw_if_index;
224 uword *sa_index_by_sa_id;
225 uword *ipsec_if_pool_index_by_key;
228 u32 error_drop_node_index;
229 u32 ip4_lookup_node_index;
230 u32 esp_encrypt_node_index;
234 ipsec_main_t ipsec_main;
236 extern vlib_node_registration_t esp_encrypt_node;
237 extern vlib_node_registration_t esp_decrypt_node;
238 extern vlib_node_registration_t ipsec_if_output_node;
239 extern vlib_node_registration_t ipsec_if_input_node;
245 int ipsec_set_interface_spd (vlib_main_t * vm, u32 sw_if_index, u32 spd_id,
247 int ipsec_add_del_spd (vlib_main_t * vm, u32 spd_id, int is_add);
248 int ipsec_add_del_policy (vlib_main_t * vm, ipsec_policy_t * policy,
250 int ipsec_add_del_sa (vlib_main_t * vm, ipsec_sa_t * new_sa, int is_add);
251 int ipsec_set_sa_key (vlib_main_t * vm, ipsec_sa_t * sa_update);
253 u32 ipsec_get_sa_index_by_sa_id (u32 sa_id);
254 u8 *format_ipsec_if_output_trace (u8 * s, va_list * args);
255 u8 *format_ipsec_policy_action (u8 * s, va_list * args);
256 u8 *format_ipsec_crypto_alg (u8 * s, va_list * args);
257 u8 *format_ipsec_integ_alg (u8 * s, va_list * args);
258 u8 *format_ipsec_replay_window (u8 * s, va_list * args);
259 uword unformat_ipsec_policy_action (unformat_input_t * input, va_list * args);
260 uword unformat_ipsec_crypto_alg (unformat_input_t * input, va_list * args);
261 uword unformat_ipsec_integ_alg (unformat_input_t * input, va_list * args);
263 /*u32 ipsec_add_del_tunnel_if (vnet_main_t * vnm, ipsec_add_del_tunnel_args_t * args); */
264 int ipsec_add_del_tunnel_if (ipsec_add_del_tunnel_args_t * args);
265 int ipsec_add_del_ipsec_gre_tunnel (vnet_main_t * vnm,
266 ipsec_add_del_ipsec_gre_tunnel_args_t *
268 int ipsec_set_interface_key (vnet_main_t * vnm, u32 hw_if_index,
269 ipsec_if_set_key_type_t type, u8 alg, u8 * key);
277 ipsec_alloc_empty_buffers (vlib_main_t * vm, ipsec_main_t * im)
279 u32 cpu_index = os_get_cpu_number ();
280 uword l = vec_len (im->empty_buffers[cpu_index]);
283 if (PREDICT_FALSE (l < VLIB_FRAME_SIZE))
285 if (!im->empty_buffers[cpu_index])
287 vec_alloc (im->empty_buffers[cpu_index], 2 * VLIB_FRAME_SIZE);
290 n_alloc = vlib_buffer_alloc (vm, im->empty_buffers[cpu_index] + l,
291 2 * VLIB_FRAME_SIZE - l);
293 _vec_len (im->empty_buffers[cpu_index]) = l + n_alloc;
297 static_always_inline u32
298 get_next_output_feature_node_index (vlib_buffer_t * b,
299 vlib_node_runtime_t * nr)
302 u32 sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_TX];
303 vlib_main_t *vm = vlib_get_main ();
304 vlib_node_t *node = vlib_get_node (vm, nr->node_index);
306 vnet_feature_next (sw_if_index, &next, b);
307 return node->next_nodes[next];
311 * fd.io coding-style-patch-verification: ON
314 * eval: (c-set-style "gnu")