bgpd/bgp_evpn.h

   1 /* E-VPN header for packet handling
   2  * Copyright (C) 2016 6WIND
   3  *
   4  * This file is part of FRRouting.
   5  *
   6  * FRRouting 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  * FRRouting 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 along
  17  * with this program; see the file COPYING; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 #ifndef _QUAGGA_BGP_EVPN_H
  22 #define _QUAGGA_BGP_EVPN_H
  23
  24 #include "vxlan.h"
  25 #include "bgpd.h"
  26
  27 #define EVPN_ROUTE_STRLEN 200 /* Must be >> MAC + IPv6 strings. */
  28
  29 static inline int is_evpn_enabled(void)
  30 {
  31         struct bgp *bgp = NULL;
  32
  33         bgp = bgp_get_default();
  34         return bgp ? bgp->advertise_all_vni : 0;
  35 }
  36
  37 static inline void vni2label(vni_t vni, mpls_label_t *label)
  38 {
  39         u_char *tag = (u_char *)label;
  40
  41         tag[0] = (vni >> 16) & 0xFF;
  42         tag[1] = (vni >> 8) & 0xFF;
  43         tag[2] = vni & 0xFF;
  44 }
  45
  46 static inline vni_t label2vni(mpls_label_t *label)
  47 {
  48         u_char *tag = (u_char *)label;
  49         vni_t vni;
  50
  51         vni = ((u_int32_t)*tag++ << 16);
  52         vni |= (u_int32_t)*tag++ << 8;
  53         vni |= (u_int32_t)(*tag & 0xFF);
  54
  55         return vni;
  56 }
  57
  58 static inline int advertise_type5_routes(struct bgp *bgp_vrf,
  59                                          afi_t afi)
  60 {
  61         if (!bgp_vrf->l3vni)
  62                 return 0;
  63
  64         if (afi == AFI_IP &&
  65             CHECK_FLAG(bgp_vrf->af_flags[AFI_L2VPN][SAFI_EVPN],
  66                        BGP_L2VPN_EVPN_ADVERTISE_IPV4_UNICAST))
  67                 return 1;
  68
  69         if (afi == AFI_IP6 &&
  70             CHECK_FLAG(bgp_vrf->af_flags[AFI_L2VPN][SAFI_EVPN],
  71                        BGP_L2VPN_EVPN_ADVERTISE_IPV6_UNICAST))
  72                 return 1;
  73
  74         return 0;
  75 }
  76
  77 extern void bgp_evpn_advertise_type5_route(struct bgp *bgp_vrf,
  78                                            struct prefix *p,
  79                                            struct attr *src_attr, afi_t afi,
  80                                            safi_t safi);
  81 extern void bgp_evpn_withdraw_type5_route(struct bgp *bgp_vrf, struct prefix *p,
  82                                           afi_t afi, safi_t safi);
  83 extern void bgp_evpn_withdraw_type5_routes(struct bgp *bgp_vrf, afi_t afi,
  84                                            safi_t safi);
  85 extern void bgp_evpn_advertise_type5_routes(struct bgp *bgp_vrf, afi_t afi,
  86                                             safi_t safi);
  87 extern void bgp_evpn_vrf_delete(struct bgp *bgp_vrf);
  88 extern void bgp_evpn_handle_router_id_update(struct bgp *bgp, int withdraw);
  89 extern char *bgp_evpn_label2str(mpls_label_t *label, u_int32_t num_labels,
  90                                 char *buf, int len);
  91 extern char *bgp_evpn_route2str(struct prefix_evpn *p, char *buf, int len);
  92 extern void bgp_evpn_route2json(struct prefix_evpn *p, json_object *json);
  93 extern void bgp_evpn_encode_prefix(struct stream *s, struct prefix *p,
  94                                    struct prefix_rd *prd, mpls_label_t *label,
  95                                    u_int32_t num_labels, struct attr *attr,
  96                                    int addpath_encode, u_int32_t addpath_tx_id);
  97 extern int bgp_nlri_parse_evpn(struct peer *peer, struct attr *attr,
  98                                struct bgp_nlri *packet, int withdraw);
  99 extern int bgp_evpn_import_route(struct bgp *bgp, afi_t afi, safi_t safi,
 100                                  struct prefix *p, struct bgp_info *ri);
 101 extern int bgp_evpn_unimport_route(struct bgp *bgp, afi_t afi, safi_t safi,
 102                                    struct prefix *p, struct bgp_info *ri);
 103 extern int bgp_filter_evpn_routes_upon_martian_nh_change(struct bgp *bgp);
 104 extern int bgp_evpn_local_macip_del(struct bgp *bgp, vni_t vni,
 105                                     struct ethaddr *mac, struct ipaddr *ip);
 106 extern int bgp_evpn_local_macip_add(struct bgp *bgp, vni_t vni,
 107                                     struct ethaddr *mac, struct ipaddr *ip,
 108                                     u_char flags);
 109 extern int bgp_evpn_local_l3vni_add(vni_t vni, vrf_id_t vrf_id,
 110                                     struct ethaddr *rmac,
 111                                     struct in_addr originator_ip, int filter);
 112 extern int bgp_evpn_local_l3vni_del(vni_t vni, vrf_id_t vrf_id);
 113 extern int bgp_evpn_local_vni_del(struct bgp *bgp, vni_t vni);
 114 extern int bgp_evpn_local_vni_add(struct bgp *bgp, vni_t vni,
 115                                   struct in_addr originator_ip,
 116                                   vrf_id_t tenant_vrf_id);
 117 extern void bgp_evpn_cleanup_on_disable(struct bgp *bgp);
 118 extern void bgp_evpn_cleanup(struct bgp *bgp);
 119 extern void bgp_evpn_init(struct bgp *bgp);
 120
 121 #endif /* _QUAGGA_BGP_EVPN_H */