zebra: Layer-2 interface handling

[mirror_frr.git] / zebra / zebra_l2.h

/*
 * Zebra Layer-2 interface Data structures and definitions
 * Copyright (C) 2016, 2017 Cumulus Networks, Inc.
 *
 * This file is part of FRR.
 *
 * FRR is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2, or (at your option) any
 * later version.
 *
 * FRR is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with FRR; see the file COPYING.  If not, write to the Free
 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 * 02111-1307, USA.
 */

#ifndef _ZEBRA_L2_H
#define _ZEBRA_L2_H

#include <zebra.h>

#include "if.h"
#include "vlan.h"
#include "vxlan.h"

/* zebra L2 interface information - bridge slave (linkage to bridge) */
struct zebra_l2info_brslave
{
  ifindex_t bridge_ifindex;   /* Bridge Master */
  struct interface *br_if;    /* Pointer to master */
};

/* zebra L2 interface information - bridge interface */
struct zebra_l2info_bridge
{
  u_char vlan_aware;          /* VLAN-aware bridge? */
};

/* zebra L2 interface information - VLAN interface */
struct zebra_l2info_vlan
{
  vlanid_t vid;                  /* VLAN id */
};

/* zebra L2 interface information - VXLAN interface */
struct zebra_l2info_vxlan
{
  vni_t vni;                     /* VNI */
  struct in_addr vtep_ip;        /* Local tunnel IP */
  vlanid_t access_vlan;          /* Access VLAN - for VLAN-aware bridge. */
};

union zebra_l2if_info
{
  struct zebra_l2info_bridge  br;
  struct zebra_l2info_vlan    vl;
  struct zebra_l2info_vxlan   vxl;
};

/* NOTE: These macros are to be invoked only in the "correct" context.
 * IOW, the macro VNI_FROM_ZEBRA_IF() will assume the interface is
 * of type ZEBRA_IF_VXLAN.
 */
#define VNI_FROM_ZEBRA_IF(zif) (zif)->l2info.vxl.vni
#define VLAN_ID_FROM_ZEBRA_IF(zif) (zif)->l2info.vl.vid

#define IS_ZEBRA_IF_BRIDGE_VLAN_AWARE(zif) \
        ((zif)->l2info.br.vlan_aware == 1)


extern void zebra_l2_map_slave_to_bridge (struct zebra_l2info_brslave *br_slave);
extern void zebra_l2_unmap_slave_from_bridge (struct zebra_l2info_brslave *br_slave);
extern void zebra_l2_bridge_add_update (struct interface *ifp,
                                        struct zebra_l2info_bridge *bridge_info,
                                        int add);
extern void zebra_l2_bridge_del (struct interface *ifp);
extern void zebra_l2_vlanif_update (struct interface *ifp,
                                    struct zebra_l2info_vlan *vlan_info);
extern void zebra_l2_vxlanif_add_update (struct interface *ifp,
                                         struct zebra_l2info_vxlan *vxlan_info,
                                         int add);
extern void zebra_l2_vxlanif_update_access_vlan (struct interface *ifp,
                                                 vlanid_t access_vlan);
extern void zebra_l2_vxlanif_del (struct interface *ifp);
extern void zebra_l2if_update_bridge_slave (struct interface *ifp,
                                            ifindex_t bridge_ifindex);

#endif /* _ZEBRA_L2_H */