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 along
  18  * with this program; see the file COPYING; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  20  */
  21
  22 #ifndef _ZEBRA_RNH_H
  23 #define _ZEBRA_RNH_H
  24
  25 #include "prefix.h"
  26 #include "vty.h"
  27
  28 /* Nexthop structure. */
  29 struct rnh {
  30         u_char flags;
  31
  32 #define ZEBRA_NHT_CONNECTED     0x1
  33 #define ZEBRA_NHT_DELETED       0x2
  34 #define ZEBRA_NHT_EXACT_MATCH   0x4
  35
  36         /* VRF identifier. */
  37         vrf_id_t vrf_id;
  38
  39         struct route_entry *state;
  40         struct prefix resolved_route;
  41         struct list *client_list;
  42         struct list *
  43                 zebra_static_route_list; /* static routes dependent on this NH
  44                                             */
  45         struct route_node *node;
  46         int filtered[ZEBRA_ROUTE_MAX]; /* if this has been filtered for client
  47                                           */
  48 };
  49
  50 typedef enum { RNH_NEXTHOP_TYPE, RNH_IMPORT_CHECK_TYPE } rnh_type_t;
  51
  52 extern int zebra_rnh_ip_default_route;
  53 extern int zebra_rnh_ipv6_default_route;
  54
  55 extern struct rnh *zebra_add_rnh(struct prefix *p, vrf_id_t vrfid,
  56                                  rnh_type_t type);
  57 extern struct rnh *zebra_lookup_rnh(struct prefix *p, vrf_id_t vrfid,
  58                                     rnh_type_t type);
  59 extern void zebra_free_rnh(struct rnh *rnh);
  60 extern void zebra_delete_rnh(struct rnh *rnh, rnh_type_t type);
  61 extern void zebra_add_rnh_client(struct rnh *rnh, struct zserv *client,
  62                                  rnh_type_t type, vrf_id_t vrfid);
  63 extern void zebra_register_rnh_static_nh(vrf_id_t, struct prefix *,
  64                                          struct route_node *);
  65 extern void zebra_deregister_rnh_static_nexthops(vrf_id_t,
  66                                                  struct nexthop *nexthop,
  67                                                  struct route_node *rn);
  68 extern void zebra_deregister_rnh_static_nh(vrf_id_t, struct prefix *,
  69                                            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,
  73                                rnh_type_t type, struct prefix *p);
  74 extern void zebra_print_rnh_table(vrf_id_t vrfid, int family, struct vty *vty,
  75                                   rnh_type_t);
  76 extern char *rnh_str(struct rnh *rnh, char *buf, int size);
  77 extern int zebra_cleanup_rnh_client(vrf_id_t vrf, int family,
  78                                     struct zserv *client, rnh_type_t type);
  79 #endif /*_ZEBRA_RNH_H */