zebra/zebra_neigh.h

   1 /*
   2  * Zebra neighbor table management
   3  *
   4  * Copyright (C) 2021 Nvidia
   5  * Anuradha Karuppiah
   6  *
   7  * This file is part of FRR.
   8  *
   9  * FRR is free software; you can redistribute it and/or modify it
  10  * under the terms of the GNU General Public License as published by the
  11  * Free Software Foundation; either version 2, or (at your option) any
  12  * later version.
  13  *
  14  * FRR is distributed in the hope that it will be useful, but
  15  * WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * General Public License for more details.
  18  */
  19
  20 #ifndef _ZEBRA_NEIGH_H
  21 #define _ZEBRA_NEIGH_H
  22
  23 #include <zebra.h>
  24
  25 #include "if.h"
  26
  27 #define zneigh_info zrouter.neigh_info
  28
  29 struct zebra_neigh_ent {
  30         ifindex_t ifindex;
  31         struct ipaddr ip;
  32
  33         struct ethaddr mac;
  34
  35         uint32_t flags;
  36 #define ZEBRA_NEIGH_ENT_ACTIVE (1 << 0) /* can be used for traffic */
  37
  38         /* memory used for adding the neigt entry to zneigh_info->es_rb_tree */
  39         RB_ENTRY(zebra_neigh_ent) rb_node;
  40
  41         /* list of pbr rules associated with this neigh */
  42         struct list *pbr_rule_list;
  43 };
  44 RB_HEAD(zebra_neigh_rb_head, zebra_neigh_ent);
  45 RB_PROTOTYPE(zebra_neigh_rb_head, zebra_neigh_ent, rb_node, zebra_es_rb_cmp);
  46
  47 struct zebra_neigh_info {
  48         /* RB tree of neighbor entries  */
  49         struct zebra_neigh_rb_head neigh_rb_tree;
  50 };
  51
  52
  53 /****************************************************************************/
  54 extern void zebra_neigh_add(struct interface *ifp, struct ipaddr *ip,
  55                             struct ethaddr *mac);
  56 extern void zebra_neigh_del(struct interface *ifp, struct ipaddr *ip);
  57 extern void zebra_neigh_show(struct vty *vty);
  58 extern void zebra_neigh_init(void);
  59 extern void zebra_neigh_terminate(void);
  60 extern void zebra_neigh_deref(struct zebra_pbr_rule *rule);
  61 extern void zebra_neigh_ref(int ifindex, struct ipaddr *ip,
  62                             struct zebra_pbr_rule *rule);
  63
  64 #endif /* _ZEBRA_NEIGH_H */