zebra/zebra_rnh.h

   1 /*
   2  * Zebra next hop tracking header
   3  * Copyright (C) 2013 Cumulus Networks, Inc.
   4  *
   5  * This file is part of GNU Zebra.
   6  *
   7  * GNU Zebra is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License as published by the
   9  * Free Software Foundation; either version 2, or (at your option) any
  10  * later version.
  11  *
  12  * GNU Zebra is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with GNU Zebra; see the file COPYING.  If not, write to the Free
  19  * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  20  * 02111-1307, USA.
  21  */
  22
  23 #ifndef _ZEBRA_RNH_H
  24 #define _ZEBRA_RNH_H
  25
  26 #include "prefix.h"
  27 #include "vty.h"
  28
  29 /* Nexthop structure. */
  30 struct rnh
  31 {
  32   u_char flags;
  33
  34 #define ZEBRA_NHT_CONNECTED     0x1
  35 #define ZEBRA_NHT_DELETED       0x2
  36 #define ZEBRA_NHT_EXACT_MATCH   0x4
  37
  38   /* VRF identifier. */
  39   vrf_id_t vrf_id;
  40
  41   struct rib *state;
  42   struct prefix resolved_route;
  43   struct list *client_list;
  44   struct list *zebra_static_route_list; /* static routes dependent on this NH */
  45   struct route_node *node;
  46   int filtered[ZEBRA_ROUTE_MAX]; /* if this has been filtered for client */
  47 };
  48
  49 typedef enum
  50   {
  51     RNH_NEXTHOP_TYPE,
  52     RNH_IMPORT_CHECK_TYPE
  53   } rnh_type_t;
  54
  55 extern int zebra_rnh_ip_default_route;
  56 extern int zebra_rnh_ipv6_default_route;
  57
  58 extern struct rnh *zebra_add_rnh(struct prefix *p, vrf_id_t vrfid,
  59                                  rnh_type_t type);
  60 extern struct rnh *zebra_lookup_rnh(struct prefix *p, vrf_id_t vrfid,
  61                                     rnh_type_t type);
  62 extern void zebra_free_rnh (struct rnh *rnh);
  63 extern void zebra_delete_rnh(struct rnh *rnh, rnh_type_t type);
  64 extern void zebra_add_rnh_client(struct rnh *rnh, struct zserv *client, rnh_type_t type,
  65                                  vrf_id_t vrfid);
  66 extern void zebra_register_rnh_static_nh(vrf_id_t, struct prefix *, struct route_node *);
  67 extern void zebra_deregister_rnh_static_nexthops (vrf_id_t, struct nexthop *nexthop,
  68                                                   struct route_node *rn);
  69 extern void zebra_deregister_rnh_static_nh(vrf_id_t, struct prefix *, struct route_node *);
  70 extern void zebra_remove_rnh_client(struct rnh *rnh, struct zserv *client,
  71                                     rnh_type_t type);
  72 extern void zebra_evaluate_rnh(vrf_id_t vrfid, int family, int force, rnh_type_t type,
  73                               struct prefix *p);
  74 extern void zebra_print_rnh_table(vrf_id_t vrfid, int family, struct vty *vty, rnh_type_t);
  75 extern char *rnh_str(struct rnh *rnh, char *buf, int size);
  76 extern int zebra_cleanup_rnh_client(vrf_id_t vrf, int family, struct zserv *client,
  77                                     rnh_type_t type);
  78 #endif /*_ZEBRA_RNH_H */