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_vxlan.h"
  43 #include "pim_zlookup.h"
  44 #include "pim_zebra.h"
  45 #include "pim_mlag.h"
  46
  47 #if MAXVIFS > 256
  48 CPP_NOTICE("Work needs to be done to make this work properly via the pim mroute socket\n");
  49 #endif /* MAXVIFS > 256 */
  50
  51 const char *const PIM_ALL_SYSTEMS = MCAST_ALL_SYSTEMS;
  52 const char *const PIM_ALL_ROUTERS = MCAST_ALL_ROUTERS;
  53 const char *const PIM_ALL_PIM_ROUTERS = MCAST_ALL_PIM_ROUTERS;
  54 const char *const PIM_ALL_IGMP_ROUTERS = MCAST_ALL_IGMP_ROUTERS;
  55
  56 DEFINE_MTYPE_STATIC(PIMD, ROUTER, "PIM Router information");
  57
  58 struct pim_router *router = NULL;
  59 struct in_addr qpim_all_pim_routers_addr;
  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(void)
  78 {
  79         pim_route_map_terminate();
  80
  81         zclient_lookup_free();
  82 }
  83
  84 void pim_router_init(void)
  85 {
  86         router = XCALLOC(MTYPE_ROUTER, sizeof(*router));
  87
  88         router->debugs = 0;
  89         router->master = frr_init();
  90         router->t_periodic = PIM_DEFAULT_T_PERIODIC;
  91
  92         /*
  93           RFC 4601: 4.6.3.  Assert Metrics
  94
  95           assert_metric
  96           infinite_assert_metric() {
  97           return {1,infinity,infinity,0}
  98           }
  99         */
 100         router->infinite_assert_metric.rpt_bit_flag = 1;
 101         router->infinite_assert_metric.metric_preference =
 102                 PIM_ASSERT_METRIC_PREFERENCE_MAX;
 103         router->infinite_assert_metric.route_metric =
 104                 PIM_ASSERT_ROUTE_METRIC_MAX;
 105         router->infinite_assert_metric.ip_address.s_addr = INADDR_ANY;
 106         router->rpf_cache_refresh_delay_msec = 50;
 107         router->register_suppress_time = PIM_REGISTER_SUPPRESSION_TIME_DEFAULT;
 108         router->packet_process = PIM_DEFAULT_PACKET_PROCESS;
 109         router->register_probe_time = PIM_REGISTER_PROBE_TIME_DEFAULT;
 110         router->vrf_id = VRF_DEFAULT;
 111         router->pim_mlag_intf_cnt = 0;
 112         router->connected_to_mlag = false;
 113 }
 114
 115 void pim_router_terminate(void)
 116 {
 117         pim_mlag_terminate();
 118         XFREE(MTYPE_ROUTER, router);
 119 }
 120
 121 void pim_init(void)
 122 {
 123         if (!inet_aton(PIM_ALL_PIM_ROUTERS, &qpim_all_pim_routers_addr)) {
 124                 flog_err(
 125                         EC_LIB_SOCKET,
 126                         "%s %s: could not solve %s to group address: errno=%d: %s",
 127                         __FILE__, __func__, PIM_ALL_PIM_ROUTERS, errno,
 128                         safe_strerror(errno));
 129                 assert(0);
 130                 return;
 131         }
 132
 133         pim_cmd_init();
 134 }
 135
 136 void pim_terminate(void)
 137 {
 138         struct zclient *zclient;
 139
 140         /* reverse prefix_list_init */
 141         prefix_list_add_hook(NULL);
 142         prefix_list_delete_hook(NULL);
 143         prefix_list_reset();
 144
 145         pim_vxlan_terminate();
 146         pim_vrf_terminate();
 147
 148         zclient = pim_zebra_zclient_get();
 149         if (zclient) {
 150                 zclient_stop(zclient);
 151                 zclient_free(zclient);
 152         }
 153
 154         pim_free();
 155         pim_router_terminate();
 156
 157         frr_fini();
 158 }