src/plugins/nat/nat66.h

   1 /*
   2  * Copyright (c) 2018 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:
   6  *
   7  *     http://www.apache.org/licenses/LICENSE-2.0
   8  *
   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.
  14  */
  15 /**
  16  * @file
  17  * @brief NAT66 global declarations
  18  */
  19 #ifndef __included_nat66_h__
  20 #define __included_nat66_h__
  21
  22 #include <vppinfra/bihash_24_8.h>
  23 #include <nat/nat.h>
  24
  25 typedef struct
  26 {
  27   ip6_address_t l_addr;
  28   ip6_address_t e_addr;
  29   u32 fib_index;
  30 } nat66_static_mapping_t;
  31
  32 typedef struct
  33 {
  34   union
  35   {
  36     struct
  37     {
  38       ip6_address_t addr;
  39       u32 fib_index;
  40       u32 rsvd;
  41     };
  42     u64 as_u64[3];
  43   };
  44 } nat66_sm_key_t;
  45
  46 typedef struct
  47 {
  48   /** Interface pool */
  49   snat_interface_t *interfaces;
  50   /** Static mapping pool */
  51   nat66_static_mapping_t *sm;
  52   /** Static mapping by local address lookup table */
  53   clib_bihash_24_8_t sm_l;
  54   /** Static mapping by external address lookup table */
  55   clib_bihash_24_8_t sm_e;
  56   /** Session counters */
  57   vlib_combined_counter_main_t session_counters;
  58 } nat66_main_t;
  59
  60 extern nat66_main_t nat66_main;
  61 extern vlib_node_registration_t nat66_in2out_node;
  62 extern vlib_node_registration_t nat66_out2in_node;
  63
  64 void nat66_init (void);
  65 typedef int (*nat66_interface_walk_fn_t) (snat_interface_t * i, void *ctx);
  66 void nat66_interfaces_walk (nat66_interface_walk_fn_t fn, void *ctx);
  67 int nat66_interface_add_del (u32 sw_if_index, u8 is_inside, u8 is_add);
  68 typedef int (*nat66_static_mapping_walk_fn_t) (nat66_static_mapping_t * sm,
  69                                                void *ctx);
  70 void nat66_static_mappings_walk (nat66_static_mapping_walk_fn_t fn,
  71                                  void *ctx);
  72 nat66_static_mapping_t *nat66_static_mapping_get (ip6_address_t * addr,
  73                                                   u32 fib_index, u8 is_local);
  74 int nat66_static_mapping_add_del (ip6_address_t * l_addr,
  75                                   ip6_address_t * e_addr, u32 vrf_id,
  76                                   u8 is_add);
  77
  78 #endif /* __included_nat66_h__ */
  79
  80 /*
  81  * fd.io coding-style-patch-verification: ON
  82  *
  83  * Local Variables:
  84  * eval: (c-set-style "gnu")
  85  * End:
  86  */