lib/vxlan.h

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /* VxLAN common header.
   3  * Copyright (C) 2016, 2017 Cumulus Networks, Inc.
   4  */
   5
   6 #ifndef __VXLAN_H__
   7 #define __VXLAN_H__
   8
   9 #ifdef __cplusplus
  10 extern "C" {
  11 #endif
  12
  13 /* EVPN MH DF election algorithm */
  14 #define EVPN_MH_DF_ALG_SERVICE_CARVING 0
  15 #define EVPN_MH_DF_ALG_HRW 1
  16 #define EVPN_MH_DF_ALG_PREF 2
  17
  18 /* preference range for DF election */
  19 #define EVPN_MH_DF_PREF_MIN 0
  20 #define EVPN_MH_DF_PREF_DEFAULT 32767
  21 #define EVPN_MH_DF_PREF_MAX 65535
  22
  23 /* VxLAN Network Identifier - 24-bit (RFC 7348) */
  24 typedef uint32_t vni_t;
  25 #define VNI_MAX 16777215 /* (2^24 - 1) */
  26
  27 /* Flooding mechanisms for BUM packets. */
  28 /* Currently supported mechanisms are head-end (ingress) replication
  29  * (which is the default) and no flooding. Future options could be
  30  * using PIM-SM, PIM-Bidir etc.
  31  */
  32 enum vxlan_flood_control {
  33         VXLAN_FLOOD_HEAD_END_REPL = 0,
  34         VXLAN_FLOOD_DISABLED,
  35         VXLAN_FLOOD_PIM_SM,
  36 };
  37
  38 #ifdef __cplusplus
  39 }
  40 #endif
  41
  42 #endif /* __VXLAN_H__ */