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/* Hey Emacs use -*- mode: C -*- */
/*
* Copyright (c) 2018 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.
*/
option version = "2.0.1";
import "vnet/ip/ip_types.api";
/** \brief MPLS label
*/
typedef fib_mpls_label
{
u8 is_uniform;
u32 label;
u8 ttl;
u8 exp;
};
/** brief A path's nexthop protocol
*/
enum fib_path_nh_proto
{
FIB_API_PATH_NH_PROTO_IP4 = 0,
FIB_API_PATH_NH_PROTO_IP6,
FIB_API_PATH_NH_PROTO_MPLS,
FIB_API_PATH_NH_PROTO_ETHERNET,
FIB_API_PATH_NH_PROTO_BIER,
};
/** \brief Flags for the path
*/
enum fib_path_flags
{
FIB_API_PATH_FLAG_NONE = 0,
/* the path must resolve via an attached route */
FIB_API_PATH_FLAG_RESOLVE_VIA_ATTACHED = 1,
/* the path must resolve via a host route */
FIB_API_PATH_FLAG_RESOLVE_VIA_HOST = 2,
/* pop a Pseudo Wire Control Word as well */
FIB_API_PATH_FLAG_POP_PW_CW = 4,
};
/* \brief A description of the 'next-hop' for a path
* this can be something that needs resolving like an IP address
* (into an adjacency or another FIB entry) or the index of another
* VPP object that was previously created (i.e. a UDP encap object)
*/
typedef fib_path_nh
{
/* proto = IP[46] */
vl_api_address_union_t address;
/* proto = MPLS */
u32 via_label;
/* proto = ANY, determined by path type */
u32 obj_id;
/* path-type = CLASSIFY */
u32 classify_table_index;
};
enum fib_path_type
{
/* Normal Paths */
FIB_API_PATH_TYPE_NORMAL = 0,
/* local/for-us/receive = packet sent to VPP's L4 stack */
FIB_API_PATH_TYPE_LOCAL,
/* packet is dropped */
FIB_API_PATH_TYPE_DROP,
/* Packet is UDP encapped - set obj_id in fib_path_nh_id */
FIB_API_PATH_TYPE_UDP_ENCAP,
/* Packet is BIER encapped - set obj_id in fib_path_nh_id */
FIB_API_PATH_TYPE_BIER_IMP,
/* packet will generated ICMP unreach to sender */
FIB_API_PATH_TYPE_ICMP_UNREACH,
/* packet will generated ICMP prohibt to sender */
FIB_API_PATH_TYPE_ICMP_PROHIBIT,
/* perform a lookup based on the packet's source address */
FIB_API_PATH_TYPE_SOURCE_LOOKUP,
/* Distributed Virtual router, packet is forwarded with the original
L2 header unchanged */
FIB_API_PATH_TYPE_DVR,
/* packet's RX interface is changed */
FIB_API_PATH_TYPE_INTERFACE_RX,
/* packet will be sent to a classify table */
FIB_API_PATH_TYPE_CLASSIFY,
};
/** \brief FIB path
@param sw_if_index - index of the interface
@param table_id - The table ID in which to find the next-hop address
(for recursive routes, i.e. when the interface is
not given)
@param weight - The weight, for UCMP
@param preference - The preference of the path. lowest preference
is preferred
@param rpf-id - For paths that pop to multicast, this the the
RPF ID the packet will be given (0 and ~0 => unset)
@param type - the path type
@param flags - path flags
@param proto - protocol that describes the next-hop address
@param nh - the next-hop/net resolving object
@param n_labels - the number of labels present in the stack
@param label_stack - a stack of MPLS labels
*/
typedef fib_path
{
u32 sw_if_index;
u32 table_id;
u32 rpf_id;
u8 weight;
u8 preference;
vl_api_fib_path_type_t type;
vl_api_fib_path_flags_t flags;
vl_api_fib_path_nh_proto_t proto;
vl_api_fib_path_nh_t nh;
u8 n_labels;
vl_api_fib_mpls_label_t label_stack[16];
};
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