forked from Mirror/frr
98 lines
3.1 KiB
C
98 lines
3.1 KiB
C
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/* BGP EVPN internal definitions
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* Copyright (C) 2017 Cumulus Networks, Inc.
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*
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* This file is part of FRR.
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*
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* FRR is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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*
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* FRR is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with FRR; see the file COPYING. If not, write to the Free
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* Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*/
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#ifndef _BGP_EVPN_PRIVATE_H
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#define _BGP_EVPN_PRIVATE_H
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#include "vxlan.h"
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#include "zebra.h"
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#include "bgpd/bgpd.h"
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#include "bgpd/bgp_ecommunity.h"
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/* EVPN prefix lengths. */
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#define EVPN_TYPE_2_ROUTE_PREFIXLEN 224
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#define EVPN_TYPE_3_ROUTE_PREFIXLEN 224
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/* EVPN route types. */
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typedef enum
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{
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BGP_EVPN_AD_ROUTE = 1, /* Ethernet Auto-Discovery (A-D) route */
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BGP_EVPN_MAC_IP_ROUTE, /* MAC/IP Advertisement route */
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BGP_EVPN_IMET_ROUTE, /* Inclusive Multicast Ethernet Tag route */
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BGP_EVPN_ES_ROUTE, /* Ethernet Segment route */
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BGP_EVPN_IP_PREFIX_ROUTE, /* IP Prefix route */
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} bgp_evpn_route_type;
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/*
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* Hash table of EVIs. Right now, the only type of EVI supported is with
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* VxLAN encapsulation, hence each EVI corresponds to a L2 VNI.
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* The VNIs are not "created" through BGP but through some other interface
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* on the system. This table stores VNIs that BGP comes to know as present
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* on the system (through interaction with zebra) as well as pre-configured
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* VNIs (which need to be defined in the system to become "live").
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*/
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struct bgpevpn
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{
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vni_t vni;
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u_int32_t flags;
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#define VNI_FLAG_CFGD 0x1 /* VNI is user configured */
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#define VNI_FLAG_LIVE 0x2 /* VNI is "live" */
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#define VNI_FLAG_RD_CFGD 0x4 /* RD is user configured. */
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#define VNI_FLAG_IMPRT_CFGD 0x8 /* Import RT is user configured */
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#define VNI_FLAG_EXPRT_CFGD 0x10 /* Export RT is user configured */
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/* Id for deriving the RD automatically for this VNI */
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u_int16_t rd_id;
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/* RD for this VNI. */
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struct prefix_rd prd;
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/* Route type 3 field */
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struct in_addr originator_ip;
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/* Import and Export RTs. */
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struct list *import_rtl;
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struct list *export_rtl;
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/* Route table for EVPN routes for this VNI. */
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struct bgp_table *route_table;
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QOBJ_FIELDS
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};
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DECLARE_QOBJ_TYPE(bgpevpn)
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/* Mapping of Import RT to VNIs.
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* The Import RTs of all VNIs are maintained in a hash table with each
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* RT linking to all VNIs that will import routes matching this RT.
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*/
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struct irt_node
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{
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/* RT */
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struct ecommunity_val rt;
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/* List of VNIs importing routes matching this RT. */
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struct list *vnis;
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};
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#endif /* _BGP_EVPN_PRIVATE_H */
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