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 struct list *qpim_ssmpingd_list = NULL;
  60 struct in_addr qpim_ssmpingd_group_addr;
  61 int64_t qpim_scan_oil_events = 0;
  62 int64_t qpim_scan_oil_last = 0;
  63 unsigned int qpim_keep_alive_time = PIM_KEEPALIVE_PERIOD;
  64 signed int qpim_rp_keep_alive_time = 0;
  65 int64_t qpim_nexthop_lookups = 0;
  66 int qpim_packet_process = PIM_DEFAULT_PACKET_PROCESS;
  67 uint8_t qpim_ecmp_enable = 0;
  68 uint8_t qpim_ecmp_rebalance_enable = 0;
  69 struct pim_instance *pimg = NULL;
  70
  71 int32_t qpim_register_suppress_time = PIM_REGISTER_SUPPRESSION_TIME_DEFAULT;
  72 int32_t qpim_register_probe_time = PIM_REGISTER_PROBE_TIME_DEFAULT;
  73
  74 void pim_prefix_list_update(struct prefix_list *plist)
  75 {
  76         pim_rp_prefix_list_update(plist);
  77         pim_ssm_prefix_list_update(plist);
  78         pim_upstream_spt_prefix_list_update(pimg, plist);
  79 }
  80
  81 static void pim_free()
  82 {
  83         pim_ssmpingd_destroy();
  84
  85         pim_oil_terminate();
  86
  87         pim_if_terminate();
  88         pim_rp_free();
  89
  90         pim_route_map_terminate();
  91
  92         zclient_lookup_free();
  93
  94         zprivs_terminate(&pimd_privs);
  95 }
  96
  97 void pim_init()
  98 {
  99         qpim_rp_keep_alive_time = PIM_RP_KEEPALIVE_PERIOD;
 100
 101         pim_rp_init();
 102
 103         if (!inet_aton(PIM_ALL_PIM_ROUTERS, &qpim_all_pim_routers_addr)) {
 104                 zlog_err(
 105                         "%s %s: could not solve %s to group address: errno=%d: %s",
 106                         __FILE__, __PRETTY_FUNCTION__, PIM_ALL_PIM_ROUTERS,
 107                         errno, safe_strerror(errno));
 108                 zassert(0);
 109                 return;
 110         }
 111
 112         pim_oil_init();
 113
 114         /*
 115           RFC 4601: 4.6.3.  Assert Metrics
 116
 117           assert_metric
 118           infinite_assert_metric() {
 119           return {1,infinity,infinity,0}
 120           }
 121         */
 122         qpim_infinite_assert_metric.rpt_bit_flag = 1;
 123         qpim_infinite_assert_metric.metric_preference =
 124                 PIM_ASSERT_METRIC_PREFERENCE_MAX;
 125         qpim_infinite_assert_metric.route_metric = PIM_ASSERT_ROUTE_METRIC_MAX;
 126         qpim_infinite_assert_metric.ip_address.s_addr = INADDR_ANY;
 127
 128         pim_if_init();
 129         pim_cmd_init();
 130         pim_ssmpingd_init();
 131 }
 132
 133 void pim_terminate()
 134 {
 135         struct zclient *zclient;
 136
 137         pim_free();
 138
 139         /* reverse prefix_list_init */
 140         prefix_list_add_hook(NULL);
 141         prefix_list_delete_hook(NULL);
 142         prefix_list_reset();
 143
 144         pim_vrf_terminate();
 145
 146         zclient = pim_zebra_zclient_get();
 147         if (zclient) {
 148                 zclient_stop(zclient);
 149                 zclient_free(zclient);
 150         }
 151 }