2 * ipsec_tun.h : IPSEC tunnel protection
4 * Copyright (c) 2015 Cisco and/or its affiliates.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
18 #include <vnet/ipsec/ipsec.h>
21 * result of a lookup in the protection bihash
23 typedef struct ipsec_tun_lkup_result_t_
34 } ipsec_tun_lkup_result_t;
36 typedef struct ipsec4_tunnel_kv_t
39 * Key fields: remote ip and spi on incoming packet
40 * all fields in NET byte order
43 ipsec_tun_lkup_result_t value;
44 } __clib_packed ipsec4_tunnel_kv_t;
46 STATIC_ASSERT_SIZEOF (ipsec4_tunnel_kv_t, sizeof (clib_bihash_kv_8_8_t));
47 STATIC_ASSERT_OFFSET_OF (ipsec4_tunnel_kv_t, value,
48 STRUCT_OFFSET_OF (clib_bihash_kv_8_8_t, value));
51 ipsec4_tunnel_mk_key (ipsec4_tunnel_kv_t * k,
52 const ip4_address_t * ip, u32 spi)
54 k->key = (((u64) ip->as_u32) << 32 | spi);
58 ipsec4_tunnel_extract_key (const ipsec4_tunnel_kv_t * k,
59 ip4_address_t * ip, u32 * spi)
62 (*ip).as_u32 = k->key >> 32;
65 typedef struct ipsec6_tunnel_kv_t_
68 * Key fields: remote ip and spi on incoming packet
69 * all fields in NET byte order
73 ip6_address_t remote_ip;
77 ipsec_tun_lkup_result_t value;
78 } __clib_packed ipsec6_tunnel_kv_t;
80 STATIC_ASSERT_SIZEOF (ipsec6_tunnel_kv_t, sizeof (clib_bihash_kv_24_8_t));
81 STATIC_ASSERT_OFFSET_OF (ipsec6_tunnel_kv_t, value,
82 STRUCT_OFFSET_OF (clib_bihash_kv_24_8_t, value));
84 extern u8 *format_ipsec4_tunnel_kv (u8 * s, va_list * args);
85 extern u8 *format_ipsec6_tunnel_kv (u8 * s, va_list * args);
87 #define foreach_ipsec_protect_flags \
89 _(ENCAPED, 2, "encapped") \
92 typedef enum ipsec_protect_flags_t_
94 IPSEC_PROTECT_NONE = 0,
95 #define _(a,b,c) IPSEC_PROTECT_##a = b,
96 foreach_ipsec_protect_flags
98 } __clib_packed ipsec_protect_flags_t;
100 extern u8 *format_ipsec_tun_protect_flags (u8 * s, va_list * args);
102 typedef struct ipsec_ep_t_
108 #define ITP_MAX_N_SA_IN 4
110 typedef struct ipsec_tun_protect_t_
112 CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
115 /* not using a vector since we want the memory inline
116 * with this struct */
118 index_t itp_in_sas[ITP_MAX_N_SA_IN];
122 ipsec_ep_t itp_crypto;
124 ipsec_protect_flags_t itp_flags;
129 ip_address_t *itp_key;
131 } ipsec_tun_protect_t;
133 #define FOR_EACH_IPSEC_PROTECT_INPUT_SAI(_itp, _sai, body) \
136 for (__ii = 0; __ii < _itp->itp_n_sa_in; __ii++) { \
137 _sai = itp->itp_in_sas[__ii]; \
141 #define FOR_EACH_IPSEC_PROTECT_INPUT_SA(_itp, _sa, body) \
144 for (__ii = 0; __ii < _itp->itp_n_sa_in; __ii++) { \
145 _sa = ipsec_sa_get(itp->itp_in_sas[__ii]); \
150 extern int ipsec_tun_protect_update_one (u32 sw_if_index,
151 const ip_address_t * nh,
152 u32 sa_out, u32 sa_in);
153 extern int ipsec_tun_protect_update (u32 sw_if_index,
154 const ip_address_t * nh,
155 u32 sa_out, u32 * sa_ins);
156 extern int ipsec_tun_protect_update_in (u32 sw_if_index,
157 const ip_address_t * nh, u32 sa_in);
158 extern int ipsec_tun_protect_update_out (u32 sw_if_index,
159 const ip_address_t * nh, u32 sa_out);
161 extern int ipsec_tun_protect_del (u32 sw_if_index, const ip_address_t * nh);
163 typedef walk_rc_t (*ipsec_tun_protect_walk_cb_t) (index_t itpi, void *arg);
164 extern void ipsec_tun_protect_walk (ipsec_tun_protect_walk_cb_t fn,
166 extern void ipsec_tun_protect_walk_itf (u32 sw_if_index,
167 ipsec_tun_protect_walk_cb_t fn,
170 extern u8 *format_ipsec_tun_protect (u8 * s, va_list * args);
171 extern u8 *format_ipsec_tun_protect_index (u8 * s, va_list * args);
173 extern void ipsec_tun_register_nodes (ip_address_family_t af);
174 extern void ipsec_tun_unregister_nodes (ip_address_family_t af);
176 extern void ipsec_tun_table_init (ip_address_family_t af,
177 uword table_size, u32 n_buckets);
180 extern vlib_node_registration_t ipsec4_tun_input_node;
181 extern vlib_node_registration_t ipsec6_tun_input_node;
186 extern ipsec_tun_protect_t *ipsec_tun_protect_pool;
188 always_inline ipsec_tun_protect_t *
189 ipsec_tun_protect_get (u32 index)
191 return (pool_elt_at_index (ipsec_tun_protect_pool, index));
194 extern index_t *ipsec_tun_protect_sa_by_adj_index;
195 always_inline index_t
196 ipsec_tun_protect_get_sa_out (adj_index_t ai)
198 ASSERT (vec_len (ipsec_tun_protect_sa_by_adj_index) > ai);
199 ASSERT (INDEX_INVALID != ipsec_tun_protect_sa_by_adj_index[ai]);
201 return (ipsec_tun_protect_sa_by_adj_index[ai]);
205 * fd.io coding-style-patch-verification: ON
208 * eval: (c-set-style "gnu")