/*
- PIM for Quagga
- Copyright (C) 2008 Everton da Silva Marques
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; see the file COPYING; if not, write to the
- Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- MA 02110-1301 USA
-
-*/
+ * PIM for Quagga
+ * Copyright (C) 2008 Everton da Silva Marques
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; see the file COPYING; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
#ifndef PIM_RPF_H
#define PIM_RPF_H
#include "pim_upstream.h"
#include "pim_neighbor.h"
-int pim_nexthop_lookup(struct pim_nexthop *nexthop,
- struct in_addr addr, struct interface *incoming);
-enum pim_rpf_result pim_rpf_update(struct pim_upstream *up,
- struct in_addr *old_rpf_addr,
- struct interface *incoming);
+/*
+ RFC 4601:
+
+ Metric Preference
+ Preference value assigned to the unicast routing protocol that
+ provided the route to the multicast source or Rendezvous-Point.
+
+ Metric
+ The unicast routing table metric associated with the route used to
+ reach the multicast source or Rendezvous-Point. The metric is in
+ units applicable to the unicast routing protocol used.
+*/
+struct pim_nexthop {
+ struct in_addr last_lookup;
+ long long last_lookup_time;
+ struct interface *interface; /* RPF_interface(S) */
+ struct prefix mrib_nexthop_addr; /* MRIB.next_hop(S) */
+ uint32_t mrib_metric_preference; /* MRIB.pref(S) */
+ uint32_t mrib_route_metric; /* MRIB.metric(S) */
+ struct pim_neighbor *nbr;
+};
+
+struct pim_rpf {
+ struct pim_nexthop source_nexthop;
+ struct prefix rpf_addr; /* RPF'(S,G) */
+};
+
+enum pim_rpf_result {
+ PIM_RPF_OK = 0,
+ PIM_RPF_CHANGED,
+ PIM_RPF_FAILURE
+};
+
+struct pim_upstream;
+
+extern long long nexthop_lookups_avoided;
+
+int pim_nexthop_lookup(struct pim_nexthop *nexthop, struct in_addr addr, int neighbor_needed);
+enum pim_rpf_result pim_rpf_update(struct pim_upstream *up, struct pim_rpf *old, uint8_t is_new);
+
+int pim_rpf_addr_is_inaddr_none (struct pim_rpf *rpf);
+int pim_rpf_addr_is_inaddr_any (struct pim_rpf *rpf);
+int pim_rpf_is_same (struct pim_rpf *rpf1, struct pim_rpf *rpf2);
+void pim_rpf_set_refresh_time (void);
#endif /* PIM_RPF_H */