3 * Copyright (C) 2008 Everton da Silva Marques
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.
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.
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
30 enum pim_ifassert_state
{
32 PIM_IFASSERT_I_AM_WINNER
,
33 PIM_IFASSERT_I_AM_LOSER
36 struct pim_assert_metric
{
37 uint32_t rpt_bit_flag
;
38 uint32_t metric_preference
;
39 uint32_t route_metric
;
40 pim_addr ip_address
; /* neighbor router that sourced the Assert
45 RFC 4601: 4.11. Timer Values
47 Note that for historical reasons, the Assert message lacks a
48 Holdtime field. Thus, changing the Assert Time from the default
49 value is not recommended.
51 #define PIM_ASSERT_OVERRIDE_INTERVAL (3) /* seconds */
52 #define PIM_ASSERT_TIME (180) /* seconds */
54 #define PIM_ASSERT_METRIC_PREFERENCE_MAX (0xFFFFFFFF)
55 #define PIM_ASSERT_ROUTE_METRIC_MAX (0xFFFFFFFF)
57 void pim_ifassert_winner_set(struct pim_ifchannel
*ch
,
58 enum pim_ifassert_state new_state
, pim_addr winner
,
59 struct pim_assert_metric winner_metric
);
61 int pim_assert_recv(struct interface
*ifp
, struct pim_neighbor
*neigh
,
62 pim_addr src_addr
, uint8_t *buf
, int buf_size
);
64 int pim_assert_metric_better(const struct pim_assert_metric
*m1
,
65 const struct pim_assert_metric
*m2
);
66 int pim_assert_metric_match(const struct pim_assert_metric
*m1
,
67 const struct pim_assert_metric
*m2
);
69 int pim_assert_build_msg(uint8_t *pim_msg
, int buf_size
, struct interface
*ifp
,
70 pim_addr group_addr
, pim_addr source_addr
,
71 uint32_t metric_preference
, uint32_t route_metric
,
72 uint32_t rpt_bit_flag
);
74 int pim_assert_send(struct pim_ifchannel
*ch
);
76 int assert_action_a1(struct pim_ifchannel
*ch
);
77 void assert_action_a4(struct pim_ifchannel
*ch
);
78 void assert_action_a5(struct pim_ifchannel
*ch
);
80 #endif /* PIM_ASSERT_H */