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
  32 #include "pimd.h"
  33 #include "pim_cmd.h"
  34 #include "pim_str.h"
  35 #include "pim_oil.h"
  36 #include "pim_pim.h"
  37 #include "pim_ssmpingd.h"
  38 #include "pim_static.h"
  39 #include "pim_rp.h"
  40 #include "pim_ssm.h"
  41 #include "pim_zlookup.h"
  42 #include "pim_zebra.h"
  43
  44 const char *const PIM_ALL_SYSTEMS = MCAST_ALL_SYSTEMS;
  45 const char *const PIM_ALL_ROUTERS = MCAST_ALL_ROUTERS;
  46 const char *const PIM_ALL_PIM_ROUTERS = MCAST_ALL_PIM_ROUTERS;
  47 const char *const PIM_ALL_IGMP_ROUTERS = MCAST_ALL_IGMP_ROUTERS;
  48
  49 struct thread_master *master = NULL;
  50 uint32_t qpim_debugs = 0;
  51 int qpim_t_periodic =
  52         PIM_DEFAULT_T_PERIODIC; /* Period between Join/Prune Messages */
  53 struct pim_assert_metric qpim_infinite_assert_metric;
  54 long qpim_rpf_cache_refresh_delay_msec = 50;
  55 struct thread *qpim_rpf_cache_refresher = NULL;
  56 int64_t qpim_rpf_cache_refresh_requests = 0;
  57 int64_t qpim_rpf_cache_refresh_events = 0;
  58 int64_t qpim_rpf_cache_refresh_last = 0;
  59 int64_t qpim_scan_oil_events = 0;
  60 int64_t qpim_scan_oil_last = 0;
  61 int64_t qpim_nexthop_lookups = 0;
  62 int qpim_packet_process = PIM_DEFAULT_PACKET_PROCESS;
  63 uint8_t qpim_ecmp_enable = 0;
  64 uint8_t qpim_ecmp_rebalance_enable = 0;
  65 struct pim_instance *pimg = NULL;
  66
  67 int32_t qpim_register_suppress_time = PIM_REGISTER_SUPPRESSION_TIME_DEFAULT;
  68 int32_t qpim_register_probe_time = PIM_REGISTER_PROBE_TIME_DEFAULT;
  69
  70 void pim_prefix_list_update(struct prefix_list *plist)
  71 {
  72         struct pim_instance *pim;
  73         struct vrf *vrf;
  74
  75         RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) {
  76                 pim = vrf->info;
  77                 if (!pim)
  78                         continue;
  79
  80                 pim_rp_prefix_list_update(pim, plist);
  81                 pim_ssm_prefix_list_update(pim, plist);
  82                 pim_upstream_spt_prefix_list_update(pim, plist);
  83         }
  84 }
  85
  86 static void pim_free()
  87 {
  88         pim_route_map_terminate();
  89
  90         zclient_lookup_free();
  91
  92         zprivs_terminate(&pimd_privs);
  93 }
  94
  95 void pim_init()
  96 {
  97         if (!inet_aton(PIM_ALL_PIM_ROUTERS, &qpim_all_pim_routers_addr)) {
  98                 zlog_err(
  99                         "%s %s: could not solve %s to group address: errno=%d: %s",
 100                         __FILE__, __PRETTY_FUNCTION__, PIM_ALL_PIM_ROUTERS,
 101                         errno, safe_strerror(errno));
 102                 zassert(0);
 103                 return;
 104         }
 105
 106         /*
 107           RFC 4601: 4.6.3.  Assert Metrics
 108
 109           assert_metric
 110           infinite_assert_metric() {
 111           return {1,infinity,infinity,0}
 112           }
 113         */
 114         qpim_infinite_assert_metric.rpt_bit_flag = 1;
 115         qpim_infinite_assert_metric.metric_preference =
 116                 PIM_ASSERT_METRIC_PREFERENCE_MAX;
 117         qpim_infinite_assert_metric.route_metric = PIM_ASSERT_ROUTE_METRIC_MAX;
 118         qpim_infinite_assert_metric.ip_address.s_addr = INADDR_ANY;
 119
 120         pim_cmd_init();
 121 }
 122
 123 void pim_terminate()
 124 {
 125         struct zclient *zclient;
 126
 127         pim_free();
 128
 129         /* reverse prefix_list_init */
 130         prefix_list_add_hook(NULL);
 131         prefix_list_delete_hook(NULL);
 132         prefix_list_reset();
 133
 134         pim_vrf_terminate();
 135
 136         zclient = pim_zebra_zclient_get();
 137         if (zclient) {
 138                 zclient_stop(zclient);
 139                 zclient_free(zclient);
 140         }
 141
 142         frr_fini();
 143 }