bgpd/bgp_rd.h

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /* BGP RD definitions for BGP-based VPNs (IP/EVPN)
   3  * -- brought over from bgpd/bgp_mplsvpn.h
   4  * Copyright (C) 2000 Kunihiro Ishiguro <kunihiro@zebra.org>
   5  */
   6
   7 #ifndef _QUAGGA_BGP_RD_H
   8 #define _QUAGGA_BGP_RD_H
   9
  10 #include "asn.h"
  11 #include "prefix.h"
  12
  13 /* RD types */
  14 #define RD_TYPE_UNDEFINED (-1)
  15 #define RD_TYPE_AS      0
  16 #define RD_TYPE_IP      1
  17 #define RD_TYPE_AS4     2
  18
  19 #ifdef ENABLE_BGP_VNC
  20 #define RD_TYPE_VNC_ETH 0xff00  /* VNC L2VPN */
  21 #endif
  22
  23 #define RD_ADDRSTRLEN  28
  24 #define RD_BYTES  8
  25
  26 #define BGP_RD_AS_FORMAT(mode)                                                 \
  27         ((mode == ASNOTATION_DOT)                                              \
  28                  ? "%pRDD"                                                     \
  29                  : ((mode == ASNOTATION_DOTPLUS) ? "%pRDE" : "%pRDP"))
  30
  31 #define BGP_RD_AS_FORMAT_SPACE(mode)                                           \
  32         ((mode == ASNOTATION_DOT)                                              \
  33                  ? "%-21pRDD"                                                  \
  34                  : ((mode == ASNOTATION_DOTPLUS) ? "%-21pRDE" : "%-21pRDP"))
  35
  36 struct rd_as {
  37         uint16_t type;
  38         as_t as;
  39         uint32_t val;
  40 };
  41
  42 struct rd_ip {
  43         uint16_t type;
  44         struct in_addr ip;
  45         uint16_t val;
  46 };
  47
  48 #ifdef ENABLE_BGP_VNC
  49 struct rd_vnc_eth {
  50         uint16_t type;
  51         uint8_t local_nve_id;
  52         struct ethaddr macaddr;
  53 };
  54 #endif
  55
  56 extern uint16_t decode_rd_type(const uint8_t *pnt);
  57 extern void encode_rd_type(uint16_t, uint8_t *);
  58
  59 extern void decode_rd_as(const uint8_t *pnt, struct rd_as *rd_as);
  60 extern void decode_rd_as4(const uint8_t *pnt, struct rd_as *rd_as);
  61 extern void decode_rd_ip(const uint8_t *pnt, struct rd_ip *rd_ip);
  62 #ifdef ENABLE_BGP_VNC
  63 extern void decode_rd_vnc_eth(const uint8_t *pnt,
  64                               struct rd_vnc_eth *rd_vnc_eth);
  65 #endif
  66
  67 extern int str2prefix_rd(const char *, struct prefix_rd *);
  68 extern char *prefix_rd2str(const struct prefix_rd *prd, char *buf, size_t size,
  69                            enum asnotation_mode asnotation);
  70 extern void form_auto_rd(struct in_addr router_id, uint16_t rd_id,
  71                          struct prefix_rd *prd);
  72
  73 #endif /* _QUAGGA_BGP_RD_H */