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1 | /* BGP Nexthop tracking |
2 | * Copyright (C) 2013 Cumulus Networks, Inc. | |
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 | * | |
896014f4 DL |
16 | * You should have received a copy of the GNU General Public License along |
17 | * with this program; see the file COPYING; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
fb018d25 DS |
19 | */ |
20 | ||
21 | #ifndef _BGP_NHT_H | |
22 | #define _BGP_NHT_H | |
23 | ||
24 | /** | |
25 | * bgp_parse_nexthop_update() - parse a nexthop update message from Zebra. | |
26 | */ | |
7076bb2f | 27 | extern void bgp_parse_nexthop_update(int command, vrf_id_t vrf_id); |
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28 | |
29 | /** | |
30 | * bgp_find_nexthop() - lookup the nexthop cache table for the bnc object | |
31 | * ARGUMENTS: | |
32 | * p - path for which the nexthop object is being looked up | |
fc9a856f | 33 | * connected - True if NH MUST be a connected route |
fb018d25 | 34 | */ |
fc9a856f | 35 | extern int bgp_find_nexthop(struct bgp_info *p, int connected); |
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36 | |
37 | /** | |
38 | * bgp_find_or_add_nexthop() - lookup the nexthop cache table for the bnc | |
39 | * object. If not found, create a new object and register with ZEBRA for | |
40 | * nexthop notification. | |
41 | * ARGUMENTS: | |
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42 | * bgp_route - BGP instance of route |
43 | * bgp_nexthop - BGP instance of nexthop | |
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44 | * a - afi: AFI_IP or AF_IP6 |
45 | * p - path for which the nexthop object is being looked up | |
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46 | * peer - The BGP peer associated with this NHT |
47 | * connected - True if NH MUST be a connected route | |
fb018d25 | 48 | */ |
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49 | extern int bgp_find_or_add_nexthop(struct bgp *bgp_route, |
50 | struct bgp *bgp_nexthop, afi_t a, struct bgp_info *p, | |
51 | struct peer *peer, int connected); | |
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52 | |
53 | /** | |
54 | * bgp_unlink_nexthop() - Unlink the nexthop object from the path structure. | |
55 | * ARGUMENTS: | |
56 | * p - path structure. | |
57 | */ | |
58 | extern void bgp_unlink_nexthop(struct bgp_info *p); | |
d62a17ae | 59 | void bgp_unlink_nexthop_by_peer(struct peer *); |
fb018d25 | 60 | |
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61 | /** |
62 | * bgp_delete_connected_nexthop() - Reset the 'peer' pointer for a connected | |
63 | * nexthop entry. If no paths reference the nexthop, it will be unregistered | |
64 | * and freed. | |
65 | * ARGUMENTS: | |
66 | * afi - afi: AFI_IP or AF_IP6 | |
67 | * peer - Ptr to peer | |
68 | */ | |
d62a17ae | 69 | extern void bgp_delete_connected_nexthop(afi_t afi, struct peer *peer); |
9a233a02 | 70 | |
ee7ca6c0 | 71 | /* |
72 | * Cleanup nexthop registration and status information for BGP nexthops | |
73 | * pertaining to this VRF. This is invoked upon VRF deletion. | |
74 | */ | |
75 | extern void bgp_cleanup_nexthops(struct bgp *bgp); | |
76 | ||
fb018d25 | 77 | #endif /* _BGP_NHT_H */ |