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/*
* Copyright (c) 2019 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.
*/
/**
* A L3 cross connect will send all traffic that is received on the input
* interface to the [set of] paths requested.
* It is a much more memory efficient solution than using a separate IP table
* for each input interface and much faster than an ABF match all rule.
*/
#ifndef __L3XC_H__
#define __L3XC_H__
#include <vnet/fib/fib_node.h>
#define L3XC_PLUGIN_VERSION_MAJOR 1
#define L3XC_PLUGIN_VERSION_MINOR 0
/**
*/
typedef struct l3xc_t_
{
CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
/**
* Linkage into the FIB graph
*/
fib_node_t l3xc_node;
/**
* The path-list describing how to forward in case of a match
*/
fib_node_index_t l3xc_pl;
fib_protocol_t l3xc_proto;
/**
* Sibling index on the path-list
*/
u32 l3xc_sibling;
/**
* The input interface
*/
u32 l3xc_sw_if_index;
/**
* DPO for forwarding
*/
dpo_id_t l3xc_dpo;
} l3xc_t;
/**
* Create or update an L3XC Policy
*
* @param sw_if_index the input interface
* @param is_ipv6 - 0 if ip4, 1 if ip6
* @param rpaths The set of paths to add to the forwarding set
* @return error code
*/
extern int l3xc_update (u32 sw_if_index,
u8 is_ip6, const fib_route_path_t * rpaths);
/**
* Delete an L3XC.
*
* @param sw_if_index the input interface
* @param is_ipv6 - 0 if ip4, 1 if ip6
*/
extern int l3xc_delete (u32 sw_if_index, u8 is_ip6);
/**
* Callback function invoked during a walk of all policies
*/
typedef int (*l3xc_walk_cb_t) (index_t l3xci, void *ctx);
/**
* Walk/visit each of the L3XC policies
*/
extern void l3xc_walk (l3xc_walk_cb_t cb, void *ctx);
/**
* Find a L3 XC object from an interface and FIB protocol
*/
extern index_t l3xc_find (u32 sw_if_index, fib_protocol_t fproto);
/**
* Data-plane functions
*/
extern l3xc_t *l3xc_pool;
static_always_inline l3xc_t *
l3xc_get (u32 index)
{
return (pool_elt_at_index (l3xc_pool, index));
}
extern vlib_node_registration_t l3xc_ip4_node;
extern vlib_node_registration_t l3xc_ip6_node;
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
#endif
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