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/*
* Copyright (c) 2020 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.
*/
/**
* @brief FIB Source Address selection
*
* Use the FIB for source address selection on an interface
*/
#ifndef __FIB_SAS_H__
#define __FIB_SAS_H__
#include <vnet/fib/fib_types.h>
#include <vnet/ip/ip_types.h>
/**
* @brief Get a Source address to use in a packet being sent out
* an interface
*
* @param sw_if_index The interface on which the packet is to be sent
* @param af The address family of the packet
* @param dst The destination of the packet (can be NULL in which case any
* of the available address will be returned)
* @param src OUT the source address to use
*
* @return True if an address is available False (and src is unset) otherwise
*/
extern bool fib_sas_get (u32 sw_if_index,
ip_address_family_t af,
const ip46_address_t *dst,
ip46_address_t *src);
/**
* @brief Get an IPv4 Source address to use in a packet being sent out
* an interface
*
* @param sw_if_index The interface on which the packet is to be sent
* @param dst The destination of the packet (can be NULL in which case any
* of the available address will be returned)
* @param src OUT the source address to use
*
* @return True if an address is available False (and src is unset) otherwise
*/
extern bool fib_sas4_get (u32 sw_if_index,
const ip4_address_t *dst,
ip4_address_t *src);
/**
* @brief Get an IPv6 Source address to use in a packet being sent out
* an interface
*
* @param sw_if_index The interface on which the packet is to be sent
* @param dst The destination of the packet (can be NULL in which case any
* of the available address will be returned)
* @param src OUT the source address to use
*
* @return True if an address is available False (and src is unset) otherwise
*/
extern bool fib_sas6_get (u32 sw_if_index,
const ip6_address_t *dst,
ip6_address_t *src);
#endif
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