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12e41d03 | 1 | /* |
896014f4 DL |
2 | * PIM for Quagga |
3 | * Copyright (C) 2008 Everton da Silva Marques | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License along | |
16 | * with this program; see the file COPYING; if not, write to the Free Software | |
17 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
18 | */ | |
12e41d03 DL |
19 | |
20 | #ifndef PIM_RPF_H | |
21 | #define PIM_RPF_H | |
22 | ||
23 | #include <zebra.h> | |
24 | ||
25 | #include "pim_upstream.h" | |
26 | #include "pim_neighbor.h" | |
27 | ||
bfea315d DS |
28 | /* |
29 | RFC 4601: | |
30 | ||
31 | Metric Preference | |
32 | Preference value assigned to the unicast routing protocol that | |
33 | provided the route to the multicast source or Rendezvous-Point. | |
34 | ||
35 | Metric | |
36 | The unicast routing table metric associated with the route used to | |
37 | reach the multicast source or Rendezvous-Point. The metric is in | |
38 | units applicable to the unicast routing protocol used. | |
39 | */ | |
40 | struct pim_nexthop { | |
d62a17ae | 41 | struct in_addr last_lookup; |
42 | long long last_lookup_time; | |
43 | struct interface *interface; /* RPF_interface(S) */ | |
44 | struct prefix mrib_nexthop_addr; /* MRIB.next_hop(S) */ | |
45 | uint32_t mrib_metric_preference; /* MRIB.pref(S) */ | |
46 | uint32_t mrib_route_metric; /* MRIB.metric(S) */ | |
47 | struct pim_neighbor *nbr; | |
bfea315d DS |
48 | }; |
49 | ||
50 | struct pim_rpf { | |
d62a17ae | 51 | struct pim_nexthop source_nexthop; |
52 | struct prefix rpf_addr; /* RPF'(S,G) */ | |
bfea315d DS |
53 | }; |
54 | ||
d62a17ae | 55 | enum pim_rpf_result { PIM_RPF_OK = 0, PIM_RPF_CHANGED, PIM_RPF_FAILURE }; |
bfea315d DS |
56 | |
57 | struct pim_upstream; | |
58 | ||
d8b87afe | 59 | unsigned int pim_rpf_hash_key(const void *arg); |
74df8d6d | 60 | bool pim_rpf_equal(const void *arg1, const void *arg2); |
c2cf4b02 | 61 | |
ade155e1 DS |
62 | bool pim_nexthop_lookup(struct pim_instance *pim, struct pim_nexthop *nexthop, |
63 | struct in_addr addr, int neighbor_needed); | |
2002dcdb | 64 | enum pim_rpf_result pim_rpf_update(struct pim_instance *pim, |
ae14da48 | 65 | struct pim_upstream *up, |
8c55c132 | 66 | struct pim_rpf *old, const char *caller); |
1250cb5d SP |
67 | void pim_upstream_rpf_clear(struct pim_instance *pim, |
68 | struct pim_upstream *up); | |
d62a17ae | 69 | int pim_rpf_addr_is_inaddr_none(struct pim_rpf *rpf); |
70 | int pim_rpf_addr_is_inaddr_any(struct pim_rpf *rpf); | |
e71bf8f7 | 71 | |
d62a17ae | 72 | int pim_rpf_is_same(struct pim_rpf *rpf1, struct pim_rpf *rpf2); |
bfc92019 | 73 | void pim_rpf_set_refresh_time(struct pim_instance *pim); |
12e41d03 | 74 | #endif /* PIM_RPF_H */ |