bgpd/bgp_nexthop.h

   1 /* BGP nexthop scan
   2    Copyright (C) 2000 Kunihiro Ishiguro
   3
   4 This file is part of GNU Zebra.
   5
   6 GNU Zebra 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 GNU Zebra 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
  17 along with GNU Zebra; see the file COPYING.  If not, write to the Free
  18 Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  19 02111-1307, USA.  */
  20
  21 #ifndef _QUAGGA_BGP_NEXTHOP_H
  22 #define _QUAGGA_BGP_NEXTHOP_H
  23
  24 #include "if.h"
  25 #include "queue.h"
  26 #include "prefix.h"
  27
  28 /* BGP nexthop cache value structure. */
  29 struct bgp_nexthop_cache
  30 {
  31   /* IGP route's metric. */
  32   u_int32_t metric;
  33
  34   /* Nexthop number and nexthop linked list.*/
  35   u_char nexthop_num;
  36   struct nexthop *nexthop;
  37   time_t last_update;
  38   u_int16_t flags;
  39
  40 #define BGP_NEXTHOP_VALID             (1 << 0)
  41 #define BGP_NEXTHOP_REGISTERED        (1 << 1)
  42 #define BGP_NEXTHOP_CONNECTED         (1 << 2)
  43 #define BGP_NEXTHOP_PEER_NOTIFIED     (1 << 3)
  44
  45   u_int16_t change_flags;
  46
  47 #define BGP_NEXTHOP_CHANGED           (1 << 0)
  48 #define BGP_NEXTHOP_METRIC_CHANGED    (1 << 1)
  49 #define BGP_NEXTHOP_CONNECTED_CHANGED (1 << 2)
  50
  51   struct bgp_node *node;
  52   void *nht_info;               /* In BGP, peer session */
  53   LIST_HEAD(path_list, bgp_info) paths;
  54   unsigned int path_count;
  55 };
  56
  57 extern int bgp_nexthop_lookup (afi_t, struct peer *peer, struct bgp_info *,
  58                         int *, int *);
  59 extern void bgp_connected_add (struct connected *c);
  60 extern void bgp_connected_delete (struct connected *c);
  61 extern int bgp_multiaccess_check_v4 (struct in_addr, struct peer *);
  62 extern int bgp_config_write_scan_time (struct vty *);
  63 extern int bgp_nexthop_onlink (afi_t, struct attr *);
  64 extern int bgp_nexthop_self (struct attr *);
  65 extern void bgp_address_init (void);
  66 extern struct bgp_nexthop_cache *bnc_new();
  67 extern void bnc_free(struct bgp_nexthop_cache *bnc);
  68 extern void bnc_nexthop_free(struct bgp_nexthop_cache *bnc);
  69 extern char *bnc_str(struct bgp_nexthop_cache *bnc, char *buf, int size);
  70
  71 #endif /* _QUAGGA_BGP_NEXTHOP_H */