Line data    Source code

       1             : /*
       2             :  * Copyright (c) 2016 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             : #ifndef __DVR_DPO_H__
      17             : #define __DVR_DPO_H__
      18             : 
      19             : #include <vnet/dpo/dpo.h>
      20             : 
      21             : /**
      22             :  * Control how the reinject is performed
      23             :  */
      24             : typedef enum dvr_dpo_reinject_t_
      25             : {
      26             :     DVR_REINJECT_L2,
      27             :     DVR_REINJECT_L3,
      28             : } __clib_packed dvr_dpo_reinject_t;
      29             : 
      30             : /**
      31             :  * @brief
      32             :  * The DVR DPO. Used as the resolving object for a DVR route.
      33             :  * This is used, in place of the usual L3 Adjacency, to retransmit
      34             :  * the packet with the original L2 header intact but also to run L3 features.
      35             :  * After running L3 features the packet is re-injected back into the L2 path
      36             :  * so it can pick up the necessary VLAN tags of the egress interface.
      37             :  * This re-injection is done with an output feature.
      38             :  */
      39             : typedef struct dvr_dpo_t_
      40             : {
      41             :     /**
      42             :      * The Software interface index that the packets will output on
      43             :      */
      44             :     u32 dd_sw_if_index;
      45             : 
      46             :     /**
      47             :      * The protocol of packets using this DPO
      48             :      */
      49             :     dpo_proto_t dd_proto;
      50             : 
      51             :     /**
      52             :      * Control for how the re-inject is performed
      53             :      */
      54             :     dvr_dpo_reinject_t dd_reinject;
      55             : 
      56             :     /**
      57             :      * number of locks.
      58             :      */
      59             :     u16 dd_locks;
      60             : } dvr_dpo_t;
      61             : 
      62             : /* 8 bytes is a factor of cache line size so this struct will never span */
      63             : STATIC_ASSERT_SIZEOF(dvr_dpo_t, 8);
      64             : 
      65             : extern void dvr_dpo_add_or_lock (u32 sw_if_index,
      66             :                                  dpo_proto_t dproto,
      67             :                                  dpo_id_t *dpo);
      68             : 
      69             : extern void dvr_dpo_module_init(void);
      70             : 
      71             : /**
      72             :  * @brief pool of all interface DPOs
      73             :  */
      74             : extern dvr_dpo_t *dvr_dpo_pool;
      75             : 
      76             : static inline dvr_dpo_t *
      77         702 : dvr_dpo_get (index_t index)
      78             : {
      79         702 :     return (pool_elt_at_index(dvr_dpo_pool, index));
      80             : }
      81             : 
      82             : #endif