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