lib/vxlan.h

   1 /* VxLAN common header.
   2  * Copyright (C) 2016, 2017 Cumulus Networks, Inc.
   3  *
   4  * This file is part of FRR.
   5  *
   6  * FRR is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the
   8  * Free Software Foundation; either version 2, or (at your option) any
   9  * later version.
  10  *
  11  * FRR is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with FRR; see the file COPYING.  If not, write to the Free
  18  * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  19  * 02111-1307, USA.
  20  */
  21
  22 #ifndef __VXLAN_H__
  23 #define __VXLAN_H__
  24
  25 #ifdef __cplusplus
  26 extern "C" {
  27 #endif
  28
  29 /* EVPN MH DF election algorithm */
  30 #define EVPN_MH_DF_ALG_SERVICE_CARVING 0
  31 #define EVPN_MH_DF_ALG_HRW 1
  32 #define EVPN_MH_DF_ALG_PREF 2
  33
  34 /* preference range for DF election */
  35 #define EVPN_MH_DF_PREF_MIN 0
  36 #define EVPN_MH_DF_PREF_DEFAULT 32767
  37 #define EVPN_MH_DF_PREF_MAX 65535
  38
  39 /* VxLAN Network Identifier - 24-bit (RFC 7348) */
  40 typedef uint32_t vni_t;
  41 #define VNI_MAX 16777215 /* (2^24 - 1) */
  42
  43 /* Flooding mechanisms for BUM packets. */
  44 /* Currently supported mechanisms are head-end (ingress) replication
  45  * (which is the default) and no flooding. Future options could be
  46  * using PIM-SM, PIM-Bidir etc.
  47  */
  48 enum vxlan_flood_control {
  49         VXLAN_FLOOD_HEAD_END_REPL = 0,
  50         VXLAN_FLOOD_DISABLED,
  51         VXLAN_FLOOD_PIM_SM,
  52 };
  53
  54 #ifdef __cplusplus
  55 }
  56 #endif
  57
  58 #endif /* __VXLAN_H__ */