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 #include "lib_errors.h"
  32
  33 #include "pimd.h"
  34 #include "pim_cmd.h"
  35 #include "pim_str.h"
  36 #include "pim_oil.h"
  37 #include "pim_pim.h"
  38 #include "pim_ssmpingd.h"
  39 #include "pim_static.h"
  40 #include "pim_rp.h"
  41 #include "pim_ssm.h"
  42 #include "pim_zlookup.h"
  43 #include "pim_zebra.h"
  44
  45 const char *const PIM_ALL_SYSTEMS = MCAST_ALL_SYSTEMS;
  46 const char *const PIM_ALL_ROUTERS = MCAST_ALL_ROUTERS;
  47 const char *const PIM_ALL_PIM_ROUTERS = MCAST_ALL_PIM_ROUTERS;
  48 const char *const PIM_ALL_IGMP_ROUTERS = MCAST_ALL_IGMP_ROUTERS;
  49
  50 struct thread_master *master = NULL;
  51 uint32_t qpim_debugs = 0;
  52 int qpim_t_periodic =
  53         PIM_DEFAULT_T_PERIODIC; /* Period between Join/Prune Messages */
  54 struct pim_assert_metric qpim_infinite_assert_metric;
  55 long qpim_rpf_cache_refresh_delay_msec = 50;
  56 int qpim_packet_process = PIM_DEFAULT_PACKET_PROCESS;
  57 struct pim_instance *pimg = NULL;
  58
  59 int32_t qpim_register_suppress_time = PIM_REGISTER_SUPPRESSION_TIME_DEFAULT;
  60 int32_t qpim_register_probe_time = PIM_REGISTER_PROBE_TIME_DEFAULT;
  61
  62 void pim_prefix_list_update(struct prefix_list *plist)
  63 {
  64         struct pim_instance *pim;
  65         struct vrf *vrf;
  66
  67         RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) {
  68                 pim = vrf->info;
  69                 if (!pim)
  70                         continue;
  71
  72                 pim_rp_prefix_list_update(pim, plist);
  73                 pim_ssm_prefix_list_update(pim, plist);
  74                 pim_upstream_spt_prefix_list_update(pim, plist);
  75         }
  76 }
  77
  78 static void pim_free()
  79 {
  80         pim_route_map_terminate();
  81
  82         zclient_lookup_free();
  83 }
  84
  85 void pim_init()
  86 {
  87         if (!inet_aton(PIM_ALL_PIM_ROUTERS, &qpim_all_pim_routers_addr)) {
  88                 flog_err(
  89                         EC_LIB_SOCKET,
  90                         "%s %s: could not solve %s to group address: errno=%d: %s",
  91                         __FILE__, __PRETTY_FUNCTION__, PIM_ALL_PIM_ROUTERS,
  92                         errno, safe_strerror(errno));
  93                 zassert(0);
  94                 return;
  95         }
  96
  97         /*
  98           RFC 4601: 4.6.3.  Assert Metrics
  99
 100           assert_metric
 101           infinite_assert_metric() {
 102           return {1,infinity,infinity,0}
 103           }
 104         */
 105         qpim_infinite_assert_metric.rpt_bit_flag = 1;
 106         qpim_infinite_assert_metric.metric_preference =
 107                 PIM_ASSERT_METRIC_PREFERENCE_MAX;
 108         qpim_infinite_assert_metric.route_metric = PIM_ASSERT_ROUTE_METRIC_MAX;
 109         qpim_infinite_assert_metric.ip_address.s_addr = INADDR_ANY;
 110
 111         pim_cmd_init();
 112 }
 113
 114 void pim_terminate()
 115 {
 116         struct zclient *zclient;
 117
 118         pim_free();
 119
 120         /* reverse prefix_list_init */
 121         prefix_list_add_hook(NULL);
 122         prefix_list_delete_hook(NULL);
 123         prefix_list_reset();
 124
 125         pim_vrf_terminate();
 126
 127         zclient = pim_zebra_zclient_get();
 128         if (zclient) {
 129                 zclient_stop(zclient);
 130                 zclient_free(zclient);
 131         }
 132
 133         frr_fini();
 134 }