pimd/pim_assert.h

   1 /*
   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
  16   along with this program; see the file COPYING; if not, write to the
  17   Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
  18   MA 02110-1301 USA
  19 */
  20
  21 #ifndef PIM_ASSERT_H
  22 #define PIM_ASSERT_H
  23
  24 #include <zebra.h>
  25
  26 #include "if.h"
  27
  28 #include "pim_neighbor.h"
  29 #include "pim_ifchannel.h"
  30
  31 /*
  32   RFC 4601: 4.11.  Timer Values
  33
  34   Note that for historical reasons, the Assert message lacks a
  35   Holdtime field.  Thus, changing the Assert Time from the default
  36   value is not recommended.
  37  */
  38 #define PIM_ASSERT_OVERRIDE_INTERVAL (3)   /* seconds */
  39 #define PIM_ASSERT_TIME              (180) /* seconds */
  40
  41 #define PIM_ASSERT_METRIC_PREFERENCE_MAX (0xFFFFFFFF)
  42 #define PIM_ASSERT_ROUTE_METRIC_MAX      (0xFFFFFFFF)
  43
  44 void pim_ifassert_winner_set(struct pim_ifchannel     *ch,
  45                              enum pim_ifassert_state   new_state,
  46                              struct in_addr            winner,
  47                              struct pim_assert_metric  winner_metric);
  48
  49 int pim_assert_recv(struct interface *ifp,
  50                     struct pim_neighbor *neigh,
  51                     struct in_addr src_addr,
  52                     uint8_t *buf, int buf_size);
  53
  54 int pim_assert_metric_better(const struct pim_assert_metric *m1,
  55                              const struct pim_assert_metric *m2);
  56 int pim_assert_metric_match(const struct pim_assert_metric *m1,
  57                             const struct pim_assert_metric *m2);
  58
  59 int pim_assert_build_msg(uint8_t *pim_msg, int buf_size,
  60                          struct interface *ifp,
  61                          struct in_addr group_addr,
  62                          struct in_addr source_addr,
  63                          uint32_t metric_preference,
  64                          uint32_t route_metric,
  65                          uint32_t rpt_bit_flag);
  66
  67 int pim_assert_send(struct pim_ifchannel *ch);
  68
  69 int assert_action_a1(struct pim_ifchannel *ch);
  70 void assert_action_a4(struct pim_ifchannel *ch);
  71 void assert_action_a5(struct pim_ifchannel *ch);
  72
  73 #endif /* PIM_ASSERT_H */