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 int qpim_packet_process = PIM_DEFAULT_PACKET_PROCESS;
  55 struct pim_instance *pimg = NULL;
  56
  57 int32_t qpim_register_probe_time = PIM_REGISTER_PROBE_TIME_DEFAULT;
  58
  59 void pim_prefix_list_update(struct prefix_list *plist)
  60 {
  61         struct pim_instance *pim;
  62         struct vrf *vrf;
  63
  64         RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) {
  65                 pim = vrf->info;
  66                 if (!pim)
  67                         continue;
  68
  69                 pim_rp_prefix_list_update(pim, plist);
  70                 pim_ssm_prefix_list_update(pim, plist);
  71                 pim_upstream_spt_prefix_list_update(pim, plist);
  72         }
  73 }
  74
  75 static void pim_free()
  76 {
  77         pim_route_map_terminate();
  78
  79         zclient_lookup_free();
  80 }
  81
  82 void pim_router_init(void)
  83 {
  84         router = XCALLOC(MTYPE_ROUTER, sizeof(*router));
  85
  86         router->debugs = 0;
  87         router->master = frr_init();
  88         router->t_periodic = PIM_DEFAULT_T_PERIODIC;
  89
  90         /*
  91           RFC 4601: 4.6.3.  Assert Metrics
  92
  93           assert_metric
  94           infinite_assert_metric() {
  95           return {1,infinity,infinity,0}
  96           }
  97         */
  98         router->infinite_assert_metric.rpt_bit_flag = 1;
  99         router->infinite_assert_metric.metric_preference =
 100                 PIM_ASSERT_METRIC_PREFERENCE_MAX;
 101         router->infinite_assert_metric.route_metric =
 102                 PIM_ASSERT_ROUTE_METRIC_MAX;
 103         router->infinite_assert_metric.ip_address.s_addr = INADDR_ANY;
 104         router->rpf_cache_refresh_delay_msec = 50;
 105         router->register_suppress_time = PIM_REGISTER_SUPPRESSION_TIME_DEFAULT;
 106 }
 107
 108 void pim_router_terminate(void)
 109 {
 110         XFREE(MTYPE_ROUTER, router);
 111 }
 112
 113 void pim_init(void)
 114 {
 115         if (!inet_aton(PIM_ALL_PIM_ROUTERS, &qpim_all_pim_routers_addr)) {
 116                 flog_err(
 117                         EC_LIB_SOCKET,
 118                         "%s %s: could not solve %s to group address: errno=%d: %s",
 119                         __FILE__, __PRETTY_FUNCTION__, PIM_ALL_PIM_ROUTERS,
 120                         errno, safe_strerror(errno));
 121                 zassert(0);
 122                 return;
 123         }
 124
 125         pim_cmd_init();
 126 }
 127
 128 void pim_terminate()
 129 {
 130         struct zclient *zclient;
 131
 132         pim_free();
 133
 134         /* reverse prefix_list_init */
 135         prefix_list_add_hook(NULL);
 136         prefix_list_delete_hook(NULL);
 137         prefix_list_reset();
 138
 139         pim_vrf_terminate();
 140
 141         zclient = pim_zebra_zclient_get();
 142         if (zclient) {
 143                 zclient_stop(zclient);
 144                 zclient_free(zclient);
 145         }
 146
 147         pim_router_terminate();
 148         frr_fini();
 149 }