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
  16   along with this program; see the file COPYING; if not, write to the
  17   Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
  18   MA 02110-1301 USA
  19 */
  20
  21 #include <zebra.h>
  22
  23 #include "log.h"
  24 #include "memory.h"
  25 #include "if.h"
  26
  27 #include "pimd.h"
  28 #include "pim_cmd.h"
  29 #include "pim_iface.h"
  30 #include "pim_zebra.h"
  31 #include "pim_str.h"
  32 #include "pim_oil.h"
  33 #include "pim_pim.h"
  34 #include "pim_upstream.h"
  35 #include "pim_rpf.h"
  36 #include "pim_ssmpingd.h"
  37 #include "pim_static.h"
  38
  39 const char *const PIM_ALL_SYSTEMS      = MCAST_ALL_SYSTEMS;
  40 const char *const PIM_ALL_ROUTERS      = MCAST_ALL_ROUTERS;
  41 const char *const PIM_ALL_PIM_ROUTERS  = MCAST_ALL_PIM_ROUTERS;
  42 const char *const PIM_ALL_IGMP_ROUTERS = MCAST_ALL_IGMP_ROUTERS;
  43
  44 struct thread_master     *master = NULL;
  45 uint32_t                  qpim_debugs = 0;
  46 int                       qpim_mroute_socket_fd = -1;
  47 int64_t                   qpim_mroute_socket_creation = 0; /* timestamp of creation */
  48 struct thread            *qpim_mroute_socket_reader = 0;
  49 int                       qpim_mroute_oif_highest_vif_index = -1;
  50 struct list              *qpim_channel_oil_list = 0;
  51 int                       qpim_t_periodic = PIM_DEFAULT_T_PERIODIC; /* Period between Join/Prune Messages */
  52 struct list              *qpim_upstream_list = 0;
  53 struct zclient           *qpim_zclient_update = 0;
  54 struct zclient           *qpim_zclient_lookup = 0;
  55 struct pim_assert_metric  qpim_infinite_assert_metric;
  56 long                      qpim_rpf_cache_refresh_delay_msec = 10000;
  57 struct thread            *qpim_rpf_cache_refresher = 0;
  58 int64_t                   qpim_rpf_cache_refresh_requests = 0;
  59 int64_t                   qpim_rpf_cache_refresh_events = 0;
  60 int64_t                   qpim_rpf_cache_refresh_last =  0;
  61 struct in_addr            qpim_inaddr_any;
  62 struct list              *qpim_ssmpingd_list = 0;
  63 struct in_addr            qpim_ssmpingd_group_addr;
  64 int64_t                   qpim_scan_oil_events = 0;
  65 int64_t                   qpim_scan_oil_last = 0;
  66 int64_t                   qpim_mroute_add_events = 0;
  67 int64_t                   qpim_mroute_add_last = 0;
  68 int64_t                   qpim_mroute_del_events = 0;
  69 int64_t                   qpim_mroute_del_last = 0;
  70 struct list              *qpim_static_route_list = 0;
  71 struct pim_rpf            qpim_rp = { .rpf_addr.s_addr = INADDR_NONE };
  72
  73 int32_t qpim_register_suppress_time = PIM_REGISTER_SUPPRESSION_TIME_DEFAULT;
  74 int32_t qpim_register_probe_time = PIM_REGISTER_PROBE_TIME_DEFAULT;
  75
  76 static void pim_free()
  77 {
  78   pim_ssmpingd_destroy();
  79
  80   if (qpim_channel_oil_list)
  81     list_free(qpim_channel_oil_list);
  82
  83   if (qpim_upstream_list)
  84     list_free(qpim_upstream_list);
  85
  86   if (qpim_static_route_list)
  87      list_free(qpim_static_route_list);
  88
  89   pim_route_map_terminate();
  90 }
  91
  92 void pim_init()
  93 {
  94   srandom(time(NULL));
  95
  96   if (!inet_aton(PIM_ALL_PIM_ROUTERS, &qpim_all_pim_routers_addr)) {
  97     zlog_err("%s %s: could not solve %s to group address: errno=%d: %s",
  98              __FILE__, __PRETTY_FUNCTION__,
  99              PIM_ALL_PIM_ROUTERS, errno, safe_strerror(errno));
 100     zassert(0);
 101     return;
 102   }
 103
 104   qpim_channel_oil_list = list_new();
 105   if (!qpim_channel_oil_list) {
 106     zlog_err("%s %s: failure: channel_oil_list=list_new()",
 107              __FILE__, __PRETTY_FUNCTION__);
 108     return;
 109   }
 110   qpim_channel_oil_list->del = (void (*)(void *)) pim_channel_oil_free;
 111
 112   qpim_upstream_list = list_new();
 113   if (!qpim_upstream_list) {
 114     zlog_err("%s %s: failure: upstream_list=list_new()",
 115              __FILE__, __PRETTY_FUNCTION__);
 116     pim_free();
 117     return;
 118   }
 119   qpim_upstream_list->del = (void (*)(void *)) pim_upstream_free;
 120
 121   qpim_static_route_list = list_new();
 122   if (!qpim_static_route_list) {
 123     zlog_err("%s %s: failure: static_route_list=list_new()",
 124         __FILE__, __PRETTY_FUNCTION__);
 125     return;
 126   }
 127   qpim_static_route_list->del = (void (*)(void *)) pim_static_route_free;
 128
 129   qpim_mroute_socket_fd = -1; /* mark mroute as disabled */
 130   qpim_mroute_oif_highest_vif_index = -1;
 131
 132   zassert(!qpim_debugs);
 133   zassert(!PIM_MROUTE_IS_ENABLED);
 134
 135   qpim_inaddr_any.s_addr = PIM_NET_INADDR_ANY;
 136
 137   /*
 138     RFC 4601: 4.6.3.  Assert Metrics
 139
 140     assert_metric
 141     infinite_assert_metric() {
 142     return {1,infinity,infinity,0}
 143     }
 144   */
 145   qpim_infinite_assert_metric.rpt_bit_flag      = 1;
 146   qpim_infinite_assert_metric.metric_preference = PIM_ASSERT_METRIC_PREFERENCE_MAX;
 147   qpim_infinite_assert_metric.route_metric      = PIM_ASSERT_ROUTE_METRIC_MAX;
 148   qpim_infinite_assert_metric.ip_address        = qpim_inaddr_any;
 149
 150   pim_if_init();
 151   pim_cmd_init();
 152   pim_ssmpingd_init();
 153 }
 154
 155 void pim_terminate()
 156 {
 157   pim_free();
 158 }