pimd/pimd.c

   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 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
  18  */
  19
  20 #include <zebra.h>
  21
  22 #include "log.h"
  23 #include "memory.h"
  24 #include "if.h"
  25 #include "prefix.h"
  26 #include "vty.h"
  27 #include "plist.h"
  28 #include "hash.h"
  29 #include "jhash.h"
  30 #include "vrf.h"
  31
  32 #include "pimd.h"
  33 #include "pim_cmd.h"
  34 #include "pim_str.h"
  35 #include "pim_oil.h"
  36 #include "pim_pim.h"
  37 #include "pim_ssmpingd.h"
  38 #include "pim_static.h"
  39 #include "pim_rp.h"
  40 #include "pim_ssm.h"
  41 #include "pim_zlookup.h"
  42 #include "pim_zebra.h"
  43
  44 const char *const PIM_ALL_SYSTEMS = MCAST_ALL_SYSTEMS;
  45 const char *const PIM_ALL_ROUTERS = MCAST_ALL_ROUTERS;
  46 const char *const PIM_ALL_PIM_ROUTERS = MCAST_ALL_PIM_ROUTERS;
  47 const char *const PIM_ALL_IGMP_ROUTERS = MCAST_ALL_IGMP_ROUTERS;
  48
  49 struct thread_master *master = NULL;
  50 uint32_t qpim_debugs = 0;
  51 int qpim_t_periodic =
  52         PIM_DEFAULT_T_PERIODIC; /* Period between Join/Prune Messages */
  53 struct pim_assert_metric qpim_infinite_assert_metric;
  54 long qpim_rpf_cache_refresh_delay_msec = 50;
  55 int qpim_packet_process = PIM_DEFAULT_PACKET_PROCESS;
  56 struct pim_instance *pimg = NULL;
  57
  58 int32_t qpim_register_suppress_time = PIM_REGISTER_SUPPRESSION_TIME_DEFAULT;
  59 int32_t qpim_register_probe_time = PIM_REGISTER_PROBE_TIME_DEFAULT;
  60
  61 void pim_prefix_list_update(struct prefix_list *plist)
  62 {
  63         struct pim_instance *pim;
  64         struct vrf *vrf;
  65
  66         RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) {
  67                 pim = vrf->info;
  68                 if (!pim)
  69                         continue;
  70
  71                 pim_rp_prefix_list_update(pim, plist);
  72                 pim_ssm_prefix_list_update(pim, plist);
  73                 pim_upstream_spt_prefix_list_update(pim, plist);
  74         }
  75 }
  76
  77 static void pim_free()
  78 {
  79         pim_route_map_terminate();
  80
  81         zclient_lookup_free();
  82 }
  83
  84 void pim_init()
  85 {
  86         if (!inet_aton(PIM_ALL_PIM_ROUTERS, &qpim_all_pim_routers_addr)) {
  87                 zlog_err(
  88                         "%s %s: could not solve %s to group address: errno=%d: %s",
  89                         __FILE__, __PRETTY_FUNCTION__, PIM_ALL_PIM_ROUTERS,
  90                         errno, safe_strerror(errno));
  91                 zassert(0);
  92                 return;
  93         }
  94
  95         /*
  96           RFC 4601: 4.6.3.  Assert Metrics
  97
  98           assert_metric
  99           infinite_assert_metric() {
 100           return {1,infinity,infinity,0}
 101           }
 102         */
 103         qpim_infinite_assert_metric.rpt_bit_flag = 1;
 104         qpim_infinite_assert_metric.metric_preference =
 105                 PIM_ASSERT_METRIC_PREFERENCE_MAX;
 106         qpim_infinite_assert_metric.route_metric = PIM_ASSERT_ROUTE_METRIC_MAX;
 107         qpim_infinite_assert_metric.ip_address.s_addr = INADDR_ANY;
 108
 109         pim_cmd_init();
 110 }
 111
 112 void pim_terminate()
 113 {
 114         struct zclient *zclient;
 115
 116         pim_free();
 117
 118         /* reverse prefix_list_init */
 119         prefix_list_add_hook(NULL);
 120         prefix_list_delete_hook(NULL);
 121         prefix_list_reset();
 122
 123         pim_vrf_terminate();
 124
 125         zclient = pim_zebra_zclient_get();
 126         if (zclient) {
 127                 zclient_stop(zclient);
 128                 zclient_free(zclient);
 129         }
 130
 131         frr_fini();
 132 }