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 DEFINE_MTYPE_STATIC(PIMD, ROUTER, "PIM Router information");
  51
  52 struct pim_router *router = NULL;
  53
  54 void pim_prefix_list_update(struct prefix_list *plist)
  55 {
  56         struct pim_instance *pim;
  57         struct vrf *vrf;
  58
  59         RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) {
  60                 pim = vrf->info;
  61                 if (!pim)
  62                         continue;
  63
  64                 pim_rp_prefix_list_update(pim, plist);
  65                 pim_ssm_prefix_list_update(pim, plist);
  66                 pim_upstream_spt_prefix_list_update(pim, plist);
  67         }
  68 }
  69
  70 static void pim_free()
  71 {
  72         pim_route_map_terminate();
  73
  74         zclient_lookup_free();
  75 }
  76
  77 void pim_router_init(void)
  78 {
  79         router = XCALLOC(MTYPE_ROUTER, sizeof(*router));
  80
  81         router->debugs = 0;
  82         router->master = frr_init();
  83         router->t_periodic = PIM_DEFAULT_T_PERIODIC;
  84
  85         /*
  86           RFC 4601: 4.6.3.  Assert Metrics
  87
  88           assert_metric
  89           infinite_assert_metric() {
  90           return {1,infinity,infinity,0}
  91           }
  92         */
  93         router->infinite_assert_metric.rpt_bit_flag = 1;
  94         router->infinite_assert_metric.metric_preference =
  95                 PIM_ASSERT_METRIC_PREFERENCE_MAX;
  96         router->infinite_assert_metric.route_metric =
  97                 PIM_ASSERT_ROUTE_METRIC_MAX;
  98         router->infinite_assert_metric.ip_address.s_addr = INADDR_ANY;
  99         router->rpf_cache_refresh_delay_msec = 50;
 100         router->register_suppress_time = PIM_REGISTER_SUPPRESSION_TIME_DEFAULT;
 101         router->packet_process = PIM_DEFAULT_PACKET_PROCESS;
 102         router->register_probe_time = PIM_REGISTER_PROBE_TIME_DEFAULT;
 103         router->vrf_id = VRF_DEFAULT;
 104 }
 105
 106 void pim_router_terminate(void)
 107 {
 108         XFREE(MTYPE_ROUTER, router);
 109 }
 110
 111 void pim_init(void)
 112 {
 113         if (!inet_aton(PIM_ALL_PIM_ROUTERS, &qpim_all_pim_routers_addr)) {
 114                 flog_err(
 115                         EC_LIB_SOCKET,
 116                         "%s %s: could not solve %s to group address: errno=%d: %s",
 117                         __FILE__, __PRETTY_FUNCTION__, PIM_ALL_PIM_ROUTERS,
 118                         errno, safe_strerror(errno));
 119                 zassert(0);
 120                 return;
 121         }
 122
 123         pim_cmd_init();
 124 }
 125
 126 void pim_terminate()
 127 {
 128         struct zclient *zclient;
 129
 130         pim_free();
 131
 132         /* reverse prefix_list_init */
 133         prefix_list_add_hook(NULL);
 134         prefix_list_delete_hook(NULL);
 135         prefix_list_reset();
 136
 137         pim_vrf_terminate();
 138
 139         zclient = pim_zebra_zclient_get();
 140         if (zclient) {
 141                 zclient_stop(zclient);
 142                 zclient_free(zclient);
 143         }
 144
 145         pim_router_terminate();
 146         frr_fini();
 147 }