stn.h

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/*
 * Copyright (c) 2017 Cisco and/or its affiliates.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
#ifndef SRC_PLUGINS_STN_STN_H_
#define SRC_PLUGINS_STN_STN_H_
 
#include <vlib/vlib.h>
#include <vnet/ip/ip4.h>
#include <vnet/ip/ip6.h>
#include <vppinfra/bihash_16_8.h>
 
typedef struct {
  ip46_address_t address;
  u32 next_node_index;
  u32 sw_if_index;
} stn_rule_t;
 
typedef struct {
  /* pool of stn rules */
  stn_rule_t *rules;
 
  /* number of rules */
  u32 n_rules;
 
  /* hash table used to retrieve the rule from the ip address */
  clib_bihash_16_8_t rule_by_address_table;
 
  u32 punt_to_stn_ip4_next_index;
  u32 punt_to_stn_ip6_next_index;
 
  u16 msg_id_base;
} stn_main_t;
 
typedef struct {
  /** Destination address of intercepted packets */
  ip46_address_t address;
  /** TX interface to send packets to */
  u32 sw_if_index;
  /** Whether to delete the rule */
  u8 del;
} stn_rule_add_del_args_t;
 
/**
 * Add or delete an stn rule.
 */
int stn_rule_add_del (stn_rule_add_del_args_t *args);
 
extern stn_main_t stn_main;
 
clib_error_t *
stn_api_init (vlib_main_t * vm, stn_main_t * sm);
 
#endif /* SRC_PLUGINS_STN_STN_H_ */