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/*
* Zebra VxLAN (EVPN) Data structures and definitions
* These are "internal" to this function.
* 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_VXLAN_PRIVATE_H
#define _ZEBRA_VXLAN_PRIVATE_H
#include <zebra.h>
#include <zebra.h>
#include "if.h"
#include "linklist.h"
/* definitions */
typedef struct zebra_vni_t_ zebra_vni_t;
typedef struct zebra_vtep_t_ zebra_vtep_t;
typedef struct zebra_mac_t_ zebra_mac_t;
typedef struct zebra_neigh_t_ zebra_neigh_t;
/*
* VTEP info
*
* Right now, this just has each remote VTEP's IP address.
*/
struct zebra_vtep_t_ {
/* Remote IP. */
/* NOTE: Can only be IPv4 right now. */
struct in_addr vtep_ip;
/* Links. */
struct zebra_vtep_t_ *next;
struct zebra_vtep_t_ *prev;
};
/*
* VNI hash table
*
* Contains information pertaining to a VNI:
* - the list of remote VTEPs (with this VNI)
*/
struct zebra_vni_t_ {
/* VNI - key */
vni_t vni;
/* Corresponding VxLAN interface. */
struct interface *vxlan_if;
/* List of remote VTEPs */
zebra_vtep_t *vteps;
/* Local IP */
struct in_addr local_vtep_ip;
/* List of local or remote MAC */
struct hash *mac_table;
/* List of local or remote neighbors (MAC+IP) */
struct hash *neigh_table;
};
/*
* MAC hash table.
*
* This table contains the MAC addresses pertaining to this VNI.
* This includes local MACs learnt on an attached VLAN that maps
* to this VNI as well as remote MACs learnt and installed by BGP.
* Local MACs will be known either on a VLAN sub-interface or
* on (port, VLAN); however, it is sufficient for zebra to maintain
* against the VNI i.e., it does not need to retain the local "port"
* information. The correct VNI will be obtained as zebra maintains
* the mapping (of VLAN to VNI).
*/
struct zebra_mac_t_ {
/* MAC address. */
struct ethaddr macaddr;
u_int32_t flags;
#define ZEBRA_MAC_LOCAL 0x01
#define ZEBRA_MAC_REMOTE 0x02
#define ZEBRA_MAC_AUTO 0x04 /* Auto created for neighbor. */
#define ZEBRA_MAC_STICKY 0x08 /* Static MAC */
/* Local or remote info. */
union {
struct {
ifindex_t ifindex;
vlanid_t vid;
} local;
struct in_addr r_vtep_ip;
} fwd_info;
u_int32_t neigh_refcnt;
};
/*
* Context for MAC hash walk - used by callbacks.
*/
struct mac_walk_ctx {
zebra_vni_t *zvni; /* VNI hash */
struct zebra_vrf *zvrf; /* VRF - for client notification. */
int uninstall; /* uninstall from kernel? */
int upd_client; /* uninstall from client? */
u_int32_t flags;
#define DEL_LOCAL_MAC 0x1
#define DEL_REMOTE_MAC 0x2
#define DEL_ALL_MAC (DEL_LOCAL_MAC | DEL_REMOTE_MAC)
#define DEL_REMOTE_MAC_FROM_VTEP 0x4
#define SHOW_REMOTE_MAC_FROM_VTEP 0x8
struct in_addr r_vtep_ip; /* To walk MACs from specific VTEP */
struct vty *vty; /* Used by VTY handlers */
u_int32_t count; /* Used by VTY handlers */
};
/*
* Neighbor hash table.
*
* This table contains the neighbors (IP to MAC bindings) pertaining to
* this VNI. This includes local neighbors learnt on the attached VLAN
* device that maps to this VNI as well as remote neighbors learnt and
* installed by BGP.
* Local neighbors will be known against the VLAN device (SVI); however,
* it is sufficient for zebra to maintain against the VNI. The correct
* VNI will be obtained as zebra maintains the mapping (of VLAN to VNI).
*/
struct zebra_neigh_t_ {
/* IP address. */
struct ipaddr ip;
/* MAC address. */
struct ethaddr emac;
/* Underlying interface. */
ifindex_t ifindex;
u_int32_t flags;
#define ZEBRA_NEIGH_LOCAL 0x01
#define ZEBRA_NEIGH_REMOTE 0x02
/* Remote VTEP IP - applicable only for remote neighbors. */
struct in_addr r_vtep_ip;
};
/*
* Context for neighbor hash walk - used by callbacks.
*/
struct neigh_walk_ctx {
zebra_vni_t *zvni; /* VNI hash */
struct zebra_vrf *zvrf; /* VRF - for client notification. */
int uninstall; /* uninstall from kernel? */
int upd_client; /* uninstall from client? */
u_int32_t flags;
#define DEL_LOCAL_NEIGH 0x1
#define DEL_REMOTE_NEIGH 0x2
#define DEL_ALL_NEIGH (DEL_LOCAL_NEIGH | DEL_REMOTE_NEIGH)
#define DEL_REMOTE_NEIGH_FROM_VTEP 0x4
#define SHOW_REMOTE_NEIGH_FROM_VTEP 0x8
struct in_addr r_vtep_ip; /* To walk neighbors from specific VTEP */
struct vty *vty; /* Used by VTY handlers */
u_int32_t count; /* Used by VTY handlers */
u_char addr_width; /* Used by VTY handlers */
};
#endif /* _ZEBRA_VXLAN_PRIVATE_H */
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