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/*
* 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_ASSERT_H
#define PIM_ASSERT_H
#include <zebra.h>
#include "if.h"
struct pim_ifchannel;
struct pim_neighbor;
enum pim_ifassert_state {
PIM_IFASSERT_NOINFO,
PIM_IFASSERT_I_AM_WINNER,
PIM_IFASSERT_I_AM_LOSER
};
struct pim_assert_metric {
uint32_t rpt_bit_flag;
uint32_t metric_preference;
uint32_t route_metric;
pim_addr ip_address; /* neighbor router that sourced the Assert
message */
};
/*
RFC 4601: 4.11. Timer Values
Note that for historical reasons, the Assert message lacks a
Holdtime field. Thus, changing the Assert Time from the default
value is not recommended.
*/
#define PIM_ASSERT_OVERRIDE_INTERVAL (3) /* seconds */
#define PIM_ASSERT_TIME (180) /* seconds */
#define PIM_ASSERT_METRIC_PREFERENCE_MAX (0xFFFFFFFF)
#define PIM_ASSERT_ROUTE_METRIC_MAX (0xFFFFFFFF)
void pim_ifassert_winner_set(struct pim_ifchannel *ch,
enum pim_ifassert_state new_state, pim_addr winner,
struct pim_assert_metric winner_metric);
int pim_assert_recv(struct interface *ifp, struct pim_neighbor *neigh,
pim_addr src_addr, uint8_t *buf, int buf_size);
int pim_assert_metric_better(const struct pim_assert_metric *m1,
const struct pim_assert_metric *m2);
int pim_assert_metric_match(const struct pim_assert_metric *m1,
const struct pim_assert_metric *m2);
int pim_assert_build_msg(uint8_t *pim_msg, int buf_size, struct interface *ifp,
pim_addr group_addr, pim_addr source_addr,
uint32_t metric_preference, uint32_t route_metric,
uint32_t rpt_bit_flag);
int pim_assert_send(struct pim_ifchannel *ch);
int assert_action_a1(struct pim_ifchannel *ch);
void assert_action_a4(struct pim_ifchannel *ch);
void assert_action_a5(struct pim_ifchannel *ch);
#endif /* PIM_ASSERT_H */
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