src/vnet/ipsec/ipsec_tun.h

   1 /*
   2  * ipsec_tun.h : IPSEC tunnel protection
   3  *
   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:
   8  *
   9  *     http://www.apache.org/licenses/LICENSE-2.0
  10  *
  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.
  16  */
  17
  18 #include <vnet/ipsec/ipsec.h>
  19
  20 typedef enum ipsec_protect_flags_t_
  21 {
  22   IPSEC_PROTECT_L2 = (1 << 0),
  23   IPSEC_PROTECT_ENCAPED = (1 << 1),
  24 } __clib_packed ipsec_protect_flags_t;
  25
  26 typedef struct ipsec_ep_t_
  27 {
  28   ip46_address_t src;
  29   ip46_address_t dst;
  30 } ipsec_ep_t;
  31
  32 typedef struct ipsec_tun_protect_t_
  33 {
  34   CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
  35   index_t itp_out_sa;
  36
  37   /* not using a vector since we want the memory inline
  38    * with this struct */
  39   u32 itp_n_sa_in;
  40   index_t itp_in_sas[4];
  41
  42   u32 itp_sw_if_index;
  43
  44   ipsec_ep_t itp_crypto;
  45
  46   ipsec_protect_flags_t itp_flags;
  47
  48   ipsec_ep_t itp_tun;
  49
  50 } ipsec_tun_protect_t;
  51
  52 #define FOR_EACH_IPSEC_PROTECT_INPUT_SAI(_itp, _sai, body) \
  53 {                                                          \
  54   u32 __ii;                                                \
  55   for (__ii = 0; __ii < _itp->itp_n_sa_in; __ii++) {       \
  56     _sai = itp->itp_in_sas[__ii];                          \
  57     body;                                                  \
  58   }                                                        \
  59 }
  60 #define FOR_EACH_IPSEC_PROTECT_INPUT_SA(_itp, _sa, body)   \
  61 {                                                          \
  62   u32 __ii;                                                \
  63   for (__ii = 0; __ii < _itp->itp_n_sa_in; __ii++) {       \
  64     _sa = ipsec_sa_get(itp->itp_in_sas[__ii]);             \
  65     body;                                                  \
  66   }                                                        \
  67 }
  68
  69 extern int ipsec_tun_protect_update (u32 sw_if_index, u32 sa_out,
  70                                      u32 sa_ins[2]);
  71 extern int ipsec_tun_protect_del (u32 sw_if_index);
  72
  73 typedef walk_rc_t (*ipsec_tun_protect_walk_cb_t) (index_t itpi, void *arg);
  74 extern void ipsec_tun_protect_walk (ipsec_tun_protect_walk_cb_t fn,
  75                                     void *cttx);
  76 extern index_t ipsec_tun_protect_find (u32 sw_if_index);
  77
  78 extern u8 *format_ipsec_tun_protect (u8 * s, va_list * args);
  79
  80 // FIXME
  81 extern vlib_node_registration_t ipsec4_tun_input_node;
  82 extern vlib_node_registration_t ipsec6_tun_input_node;
  83
  84 /*
  85  * DP API
  86  */
  87 extern ipsec_tun_protect_t *ipsec_protect_pool;
  88
  89 typedef struct ipsec_tun_lkup_result_t_
  90 {
  91   union
  92   {
  93     struct
  94     {
  95       u32 tun_index;
  96       u32 sa_index;
  97     };
  98     u64 as_u64;
  99   };
 100 } ipsec_tun_lkup_result_t;
 101
 102 always_inline ipsec_tun_protect_t *
 103 ipsec_tun_protect_get (u32 index)
 104 {
 105   return (pool_elt_at_index (ipsec_protect_pool, index));
 106 }
 107
 108 /*
 109  * fd.io coding-style-patch-verification: ON
 110  *
 111  * Local Variables:
 112  * eval: (c-set-style "gnu")
 113  * End:
 114  */