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Test the ability to see if two RPF' are the same or not. Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
75 lines
2.3 KiB
C
75 lines
2.3 KiB
C
/*
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PIM for Quagga
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Copyright (C) 2008 Everton da Silva Marques
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING; if not, write to the
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Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
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MA 02110-1301 USA
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*/
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#ifndef PIM_RPF_H
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#define PIM_RPF_H
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#include <zebra.h>
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#include "pim_upstream.h"
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#include "pim_neighbor.h"
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/*
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RFC 4601:
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Metric Preference
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Preference value assigned to the unicast routing protocol that
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provided the route to the multicast source or Rendezvous-Point.
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Metric
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The unicast routing table metric associated with the route used to
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reach the multicast source or Rendezvous-Point. The metric is in
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units applicable to the unicast routing protocol used.
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*/
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struct pim_nexthop {
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struct in_addr last_lookup;
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long long last_lookup_time;
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struct interface *interface; /* RPF_interface(S) */
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struct prefix mrib_nexthop_addr; /* MRIB.next_hop(S) */
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uint32_t mrib_metric_preference; /* MRIB.pref(S) */
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uint32_t mrib_route_metric; /* MRIB.metric(S) */
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};
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struct pim_rpf {
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struct pim_nexthop source_nexthop;
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struct prefix rpf_addr; /* RPF'(S,G) */
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};
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enum pim_rpf_result {
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PIM_RPF_OK = 0,
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PIM_RPF_CHANGED,
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PIM_RPF_FAILURE
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};
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struct pim_upstream;
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extern long long nexthop_lookups_avoided;
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int pim_nexthop_lookup(struct pim_nexthop *nexthop, struct in_addr addr, int neighbor_needed);
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enum pim_rpf_result pim_rpf_update(struct pim_upstream *up, struct in_addr *old_rpf_addr);
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int pim_rpf_addr_is_inaddr_none (struct pim_rpf *rpf);
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int pim_rpf_addr_is_inaddr_any (struct pim_rpf *rpf);
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int pim_rpf_is_same (struct pim_rpf *rpf1, struct pim_rpf *rpf2);
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void pim_rpf_set_refresh_time (void);
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#endif /* PIM_RPF_H */
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