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 const char *const PIM_ALL_SYSTEMS = MCAST_ALL_SYSTEMS;
  48 const char *const PIM_ALL_ROUTERS = MCAST_ALL_ROUTERS;
  49 const char *const PIM_ALL_PIM_ROUTERS = MCAST_ALL_PIM_ROUTERS;
  50 const char *const PIM_ALL_IGMP_ROUTERS = MCAST_ALL_IGMP_ROUTERS;
  51
  52 DEFINE_MTYPE_STATIC(PIMD, ROUTER, "PIM Router information");
  53
  54 struct pim_router *router = NULL;
  55 struct in_addr qpim_all_pim_routers_addr;
  56
  57 void pim_prefix_list_update(struct prefix_list *plist)
  58 {
  59         struct pim_instance *pim;
  60         struct vrf *vrf;
  61
  62         RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) {
  63                 pim = vrf->info;
  64                 if (!pim)
  65                         continue;
  66
  67                 pim_rp_prefix_list_update(pim, plist);
  68                 pim_ssm_prefix_list_update(pim, plist);
  69                 pim_upstream_spt_prefix_list_update(pim, plist);
  70         }
  71 }
  72
  73 static void pim_free(void)
  74 {
  75         pim_route_map_terminate();
  76
  77         zclient_lookup_free();
  78 }
  79
  80 void pim_router_init(void)
  81 {
  82         router = XCALLOC(MTYPE_ROUTER, sizeof(*router));
  83
  84         router->debugs = 0;
  85         router->master = frr_init();
  86         router->t_periodic = PIM_DEFAULT_T_PERIODIC;
  87
  88         /*
  89           RFC 4601: 4.6.3.  Assert Metrics
  90
  91           assert_metric
  92           infinite_assert_metric() {
  93           return {1,infinity,infinity,0}
  94           }
  95         */
  96         router->infinite_assert_metric.rpt_bit_flag = 1;
  97         router->infinite_assert_metric.metric_preference =
  98                 PIM_ASSERT_METRIC_PREFERENCE_MAX;
  99         router->infinite_assert_metric.route_metric =
 100                 PIM_ASSERT_ROUTE_METRIC_MAX;
 101         router->infinite_assert_metric.ip_address.s_addr = INADDR_ANY;
 102         router->rpf_cache_refresh_delay_msec = 50;
 103         router->register_suppress_time = PIM_REGISTER_SUPPRESSION_TIME_DEFAULT;
 104         router->packet_process = PIM_DEFAULT_PACKET_PROCESS;
 105         router->register_probe_time = PIM_REGISTER_PROBE_TIME_DEFAULT;
 106         router->vrf_id = VRF_DEFAULT;
 107         router->pim_mlag_intf_cnt = 0;
 108         router->connected_to_mlag = false;
 109 }
 110
 111 void pim_router_terminate(void)
 112 {
 113         pim_mlag_terminate();
 114         XFREE(MTYPE_ROUTER, router);
 115 }
 116
 117 void pim_init(void)
 118 {
 119         if (!inet_aton(PIM_ALL_PIM_ROUTERS, &qpim_all_pim_routers_addr)) {
 120                 flog_err(
 121                         EC_LIB_SOCKET,
 122                         "%s %s: could not solve %s to group address: errno=%d: %s",
 123                         __FILE__, __func__, PIM_ALL_PIM_ROUTERS, errno,
 124                         safe_strerror(errno));
 125                 zassert(0);
 126                 return;
 127         }
 128
 129         pim_cmd_init();
 130 }
 131
 132 void pim_terminate(void)
 133 {
 134         struct zclient *zclient;
 135
 136         /* reverse prefix_list_init */
 137         prefix_list_add_hook(NULL);
 138         prefix_list_delete_hook(NULL);
 139         prefix_list_reset();
 140
 141         pim_vxlan_terminate();
 142         pim_vrf_terminate();
 143
 144         zclient = pim_zebra_zclient_get();
 145         if (zclient) {
 146                 zclient_stop(zclient);
 147                 zclient_free(zclient);
 148         }
 149
 150         pim_free();
 151         pim_router_terminate();
 152
 153         frr_fini();
 154 }