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zebra_evpn.h
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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Zebra EVPN Data structures and definitions
* These are "internal" to this function.
* Copyright (C) 2016, 2017 Cumulus Networks, Inc.
* Copyright (C) 2020 Volta Networks.
*/
#ifndef _ZEBRA_EVPN_H
#define _ZEBRA_EVPN_H
#include <zebra.h>
#include "if.h"
#include "linklist.h"
#include "bitfield.h"
#include "zebra/zebra_l2.h"
#include "zebra/interface.h"
#include "zebra/zebra_vxlan.h"
#ifdef __cplusplus
extern "C" {
#endif
RB_HEAD(zebra_es_evi_rb_head, zebra_evpn_es_evi);
RB_PROTOTYPE(zebra_es_evi_rb_head, zebra_evpn_es_evi, rb_node,
zebra_es_evi_rb_cmp);
/* Private Structure to pass callback data for hash iterator */
struct zebra_evpn_show {
struct vty *vty;
json_object *json;
struct zebra_vrf *zvrf;
bool use_json;
};
/*
* VTEP info
*
* Right now, this just has each remote VTEP's IP address.
*/
struct zebra_vtep {
/* Remote IP. */
/* NOTE: Can only be IPv4 right now. */
struct in_addr vtep_ip;
/* Flood mode (one of enum vxlan_flood_control) based on the PMSI
* tunnel type advertised by the remote VTEP
*/
int flood_control;
/* Links. */
struct zebra_vtep *next;
struct zebra_vtep *prev;
};
/*
* VNI hash table
*
* Contains information pertaining to a VNI:
* - the list of remote VTEPs (with this VNI)
*/
struct zebra_evpn {
/* VNI - key */
vni_t vni;
/* ES flags */
uint32_t flags;
#define ZEVPN_READY_FOR_BGP (1 << 0) /* ready to be sent to BGP */
/* Corresponding Bridge information */
vlanid_t vid;
struct interface *bridge_if;
/* Flag for advertising gw macip */
uint8_t advertise_gw_macip;
/* Flag for advertising svi macip */
uint8_t advertise_svi_macip;
/* Flag for advertising gw macip */
uint8_t advertise_subnet;
/* Corresponding VxLAN interface. */
struct interface *vxlan_if;
/* Corresponding SVI interface. */
struct interface *svi_if;
/* List of remote VTEPs */
struct zebra_vtep *vteps;
/* Local IP */
struct in_addr local_vtep_ip;
/* PIM-SM MDT group for BUM flooding */
struct in_addr mcast_grp;
/* tenant VRF, if any */
vrf_id_t vrf_id;
/* List of local or remote MAC */
struct hash *mac_table;
/* List of local or remote neighbors (MAC+IP) */
struct hash *neigh_table;
/* RB tree of ES-EVIs */
struct zebra_es_evi_rb_head es_evi_rb_tree;
/* List of local ESs */
struct list *local_es_evi_list;
};
/* for parsing evpn and vni contexts */
struct zebra_from_svi_param {
struct interface *br_if;
struct interface *svi_if;
struct zebra_if *zif;
uint8_t bridge_vlan_aware;
vlanid_t vid;
};
struct interface *zvni_map_to_svi(vlanid_t vid, struct interface *br_if);
static inline struct interface *zevpn_map_to_svi(struct zebra_evpn *zevpn)
{
struct interface *ifp;
struct zebra_if *zif = NULL;
struct zebra_vxlan_vni *vni;
ifp = zevpn->vxlan_if;
if (!ifp)
return NULL;
zif = ifp->info;
if (!zif)
return NULL;
vni = zebra_vxlan_if_vni_find(zif, zevpn->vni);
if (!vni)
return NULL;
/* If down or not mapped to a bridge, we're done. */
if (!if_is_operative(ifp) || !zif->brslave_info.br_if)
return NULL;
return zvni_map_to_svi(vni->access_vlan, zif->brslave_info.br_if);
}
int advertise_gw_macip_enabled(struct zebra_evpn *zevpn);
int advertise_svi_macip_enabled(struct zebra_evpn *zevpn);
void zebra_evpn_print(struct zebra_evpn *zevpn, void **ctxt);
void zebra_evpn_print_hash(struct hash_bucket *bucket, void *ctxt[]);
void zebra_evpn_print_hash_detail(struct hash_bucket *bucket, void *data);
int zebra_evpn_add_macip_for_intf(struct interface *ifp,
struct zebra_evpn *zevpn);
int zebra_evpn_del_macip_for_intf(struct interface *ifp,
struct zebra_evpn *zevpn);
int zebra_evpn_advertise_subnet(struct zebra_evpn *zevpn, struct interface *ifp,
int advertise);
int zebra_evpn_gw_macip_add(struct interface *ifp, struct zebra_evpn *zevpn,
struct ethaddr *macaddr, struct ipaddr *ip);
int zebra_evpn_gw_macip_del(struct interface *ifp, struct zebra_evpn *zevpn,
struct ipaddr *ip);
void zebra_evpn_gw_macip_del_for_evpn_hash(struct hash_bucket *bucket,
void *ctxt);
void zebra_evpn_gw_macip_add_for_evpn_hash(struct hash_bucket *bucket,
void *ctxt);
void zebra_evpn_svi_macip_del_for_evpn_hash(struct hash_bucket *bucket,
void *ctxt);
struct zebra_evpn *zebra_evpn_map_vlan(struct interface *ifp,
struct interface *br_if, vlanid_t vid);
struct zebra_evpn *zebra_evpn_from_svi(struct interface *ifp,
struct interface *br_if);
struct interface *zebra_evpn_map_to_macvlan(struct interface *br_if,
struct interface *svi_if);
void zebra_evpn_rem_mac_install_all(struct zebra_evpn *zevpn);
void zebra_evpn_rem_mac_uninstall_all(struct zebra_evpn *zevpn);
void zebra_evpn_read_mac_neigh(struct zebra_evpn *zevpn, struct interface *ifp);
unsigned int zebra_evpn_hash_keymake(const void *p);
bool zebra_evpn_hash_cmp(const void *p1, const void *p2);
int zebra_evpn_list_cmp(void *p1, void *p2);
void *zebra_evpn_alloc(void *p);
struct zebra_evpn *zebra_evpn_lookup(vni_t vni);
struct zebra_evpn *zebra_evpn_add(vni_t vni);
int zebra_evpn_del(struct zebra_evpn *zevpn);
int zebra_evpn_send_add_to_client(struct zebra_evpn *zevpn);
int zebra_evpn_send_del_to_client(struct zebra_evpn *zevpn);
struct zebra_vtep *zebra_evpn_vtep_find(struct zebra_evpn *zevpn,
struct in_addr *vtep_ip);
struct zebra_vtep *zebra_evpn_vtep_add(struct zebra_evpn *zevpn,
struct in_addr *vtep_ip,
int flood_control);
int zebra_evpn_vtep_del(struct zebra_evpn *zevpn, struct zebra_vtep *zvtep);
int zebra_evpn_vtep_del_all(struct zebra_evpn *zevpn, int uninstall);
int zebra_evpn_vtep_install(struct zebra_evpn *zevpn, struct zebra_vtep *zvtep);
int zebra_evpn_vtep_uninstall(struct zebra_evpn *zevpn,
struct in_addr *vtep_ip);
void zebra_evpn_handle_flooding_remote_vteps(struct hash_bucket *bucket,
void *zvrf);
void zebra_evpn_cleanup_all(struct hash_bucket *bucket, void *arg);
void zebra_evpn_rem_macip_add(vni_t vni, const struct ethaddr *macaddr,
uint16_t ipa_len, const struct ipaddr *ipaddr,
uint8_t flags, uint32_t seq,
struct in_addr vtep_ip, const esi_t *esi);
void zebra_evpn_rem_macip_del(vni_t vni, const struct ethaddr *macaddr,
uint16_t ipa_len, const struct ipaddr *ipaddr,
struct in_addr vtep_ip);
void zebra_evpn_cfg_cleanup(struct hash_bucket *bucket, void *ctxt);
#ifdef __cplusplus
}
#endif
#endif /*_ZEBRA_EVPN_H */