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1 /* BGP Nexthop tracking
2 * Copyright (C) 2013 Cumulus Networks, Inc.
4 * This file is part of GNU Zebra.
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
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.
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
26 * bgp_parse_nexthop_update() - parse a nexthop update message from Zebra.
28 extern void bgp_parse_nexthop_update(int command
, vrf_id_t vrf_id
);
31 * bgp_find_nexthop() - lookup the nexthop cache table for the bnc object
33 * p - path for which the nexthop object is being looked up
34 * connected - True if NH MUST be a connected route
36 extern int bgp_find_nexthop(struct bgp_info
*p
, int connected
);
39 * bgp_find_or_add_nexthop() - lookup the nexthop cache table for the bnc
40 * object. If not found, create a new object and register with ZEBRA for
41 * nexthop notification.
44 * a - afi: AFI_IP or AF_IP6
45 * p - path for which the nexthop object is being looked up
46 * peer - The BGP peer associated with this NHT
47 * connected - True if NH MUST be a connected route
49 extern int bgp_find_or_add_nexthop(struct bgp
*bgp
, afi_t a
,
50 struct bgp_info
*p
, struct peer
*peer
, int connected
);
53 * bgp_unlink_nexthop() - Unlink the nexthop object from the path structure.
57 extern void bgp_unlink_nexthop(struct bgp_info
*p
);
60 * bgp_delete_connected_nexthop() - Reset the 'peer' pointer for a connected
61 * nexthop entry. If no paths reference the nexthop, it will be unregistered
64 * afi - afi: AFI_IP or AF_IP6
67 extern void bgp_delete_connected_nexthop (afi_t afi
, struct peer
*peer
);
69 #endif /* _BGP_NHT_H */