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 struct in_addr qpim_all_pim_routers_addr;
  54
  55 void pim_prefix_list_update(struct prefix_list *plist)
  56 {
  57         struct pim_instance *pim;
  58         struct vrf *vrf;
  59
  60         RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) {
  61                 pim = vrf->info;
  62                 if (!pim)
  63                         continue;
  64
  65                 pim_rp_prefix_list_update(pim, plist);
  66                 pim_ssm_prefix_list_update(pim, plist);
  67                 pim_upstream_spt_prefix_list_update(pim, plist);
  68         }
  69 }
  70
  71 static void pim_free(void)
  72 {
  73         pim_route_map_terminate();
  74
  75         zclient_lookup_free();
  76 }
  77
  78 void pim_router_init(void)
  79 {
  80         router = XCALLOC(MTYPE_ROUTER, sizeof(*router));
  81
  82         router->debugs = 0;
  83         router->master = frr_init();
  84         router->t_periodic = PIM_DEFAULT_T_PERIODIC;
  85
  86         /*
  87           RFC 4601: 4.6.3.  Assert Metrics
  88
  89           assert_metric
  90           infinite_assert_metric() {
  91           return {1,infinity,infinity,0}
  92           }
  93         */
  94         router->infinite_assert_metric.rpt_bit_flag = 1;
  95         router->infinite_assert_metric.metric_preference =
  96                 PIM_ASSERT_METRIC_PREFERENCE_MAX;
  97         router->infinite_assert_metric.route_metric =
  98                 PIM_ASSERT_ROUTE_METRIC_MAX;
  99         router->infinite_assert_metric.ip_address.s_addr = INADDR_ANY;
 100         router->rpf_cache_refresh_delay_msec = 50;
 101         router->register_suppress_time = PIM_REGISTER_SUPPRESSION_TIME_DEFAULT;
 102         router->packet_process = PIM_DEFAULT_PACKET_PROCESS;
 103         router->register_probe_time = PIM_REGISTER_PROBE_TIME_DEFAULT;
 104         router->vrf_id = VRF_DEFAULT;
 105 }
 106
 107 void pim_router_terminate(void)
 108 {
 109         XFREE(MTYPE_ROUTER, router);
 110 }
 111
 112 void pim_init(void)
 113 {
 114         if (!inet_aton(PIM_ALL_PIM_ROUTERS, &qpim_all_pim_routers_addr)) {
 115                 flog_err(
 116                         EC_LIB_SOCKET,
 117                         "%s %s: could not solve %s to group address: errno=%d: %s",
 118                         __FILE__, __PRETTY_FUNCTION__, PIM_ALL_PIM_ROUTERS,
 119                         errno, safe_strerror(errno));
 120                 zassert(0);
 121                 return;
 122         }
 123
 124         pim_cmd_init();
 125 }
 126
 127 void pim_terminate(void)
 128 {
 129         struct zclient *zclient;
 130
 131         /* reverse prefix_list_init */
 132         prefix_list_add_hook(NULL);
 133         prefix_list_delete_hook(NULL);
 134         prefix_list_reset();
 135
 136         pim_vrf_terminate();
 137
 138         zclient = pim_zebra_zclient_get();
 139         if (zclient) {
 140                 zclient_stop(zclient);
 141                 zclient_free(zclient);
 142         }
 143
 144         pim_free();
 145         pim_router_terminate();
 146
 147         frr_fini();
 148 }