pimd/pim_instance.c

   1 /*
   2  * PIM for FRR - PIM Instance
   3  * Copyright (C) 2017 Cumulus Networks, Inc.
   4  * Donald Sharp
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; see the file COPYING; if not, write to the
  18  * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
  19  * MA 02110-1301 USA
  20  */
  21 #include <zebra.h>
  22
  23 #include "hash.h"
  24 #include "vrf.h"
  25 #include "lib_errors.h"
  26
  27 #include "pimd.h"
  28 #include "pim_ssm.h"
  29 #include "pim_rpf.h"
  30 #include "pim_rp.h"
  31 #include "pim_mroute.h"
  32 #include "pim_oil.h"
  33 #include "pim_static.h"
  34 #include "pim_ssmpingd.h"
  35 #include "pim_vty.h"
  36 #include "pim_bsm.h"
  37
  38 static void pim_instance_terminate(struct pim_instance *pim)
  39 {
  40         pim_vxlan_exit(pim);
  41
  42         if (pim->ssm_info) {
  43                 pim_ssm_terminate(pim->ssm_info);
  44                 pim->ssm_info = NULL;
  45         }
  46
  47         if (pim->static_routes)
  48                 list_delete(&pim->static_routes);
  49
  50         pim_upstream_terminate(pim);
  51
  52         pim_rp_free(pim);
  53
  54         pim_bsm_proc_free(pim);
  55
  56         /* Traverse and cleanup rpf_hash */
  57         if (pim->rpf_hash) {
  58                 hash_clean(pim->rpf_hash, (void *)pim_rp_list_hash_clean);
  59                 hash_free(pim->rpf_hash);
  60                 pim->rpf_hash = NULL;
  61         }
  62
  63         pim_if_terminate(pim);
  64
  65         pim_oil_terminate(pim);
  66
  67         pim_msdp_exit(pim);
  68
  69         XFREE(MTYPE_PIM_PIM_INSTANCE, pim);
  70 }
  71
  72 static struct pim_instance *pim_instance_init(struct vrf *vrf)
  73 {
  74         struct pim_instance *pim;
  75         char hash_name[64];
  76
  77         pim = XCALLOC(MTYPE_PIM_PIM_INSTANCE, sizeof(struct pim_instance));
  78
  79         pim_if_init(pim);
  80
  81         pim->keep_alive_time = PIM_KEEPALIVE_PERIOD;
  82         pim->rp_keep_alive_time = PIM_RP_KEEPALIVE_PERIOD;
  83
  84         pim->ecmp_enable = false;
  85         pim->ecmp_rebalance_enable = false;
  86
  87         pim->vrf_id = vrf->vrf_id;
  88         pim->vrf = vrf;
  89
  90         pim->spt.switchover = PIM_SPT_IMMEDIATE;
  91         pim->spt.plist = NULL;
  92
  93         pim_msdp_init(pim, router->master);
  94         pim_vxlan_init(pim);
  95
  96         snprintf(hash_name, 64, "PIM %s RPF Hash", vrf->name);
  97         pim->rpf_hash = hash_create_size(256, pim_rpf_hash_key, pim_rpf_equal,
  98                                          hash_name);
  99
 100         if (PIM_DEBUG_ZEBRA)
 101                 zlog_debug("%s: NHT rpf hash init ", __PRETTY_FUNCTION__);
 102
 103         pim->ssm_info = pim_ssm_init();
 104
 105         pim->static_routes = list_new();
 106         pim->static_routes->del = (void (*)(void *))pim_static_route_free;
 107
 108         pim->send_v6_secondary = 1;
 109
 110         pim_rp_init(pim);
 111
 112         pim_bsm_proc_init(pim);
 113
 114         pim_oil_init(pim);
 115
 116         pim_upstream_init(pim);
 117
 118         pim->last_route_change_time = -1;
 119         return pim;
 120 }
 121
 122 struct pim_instance *pim_get_pim_instance(vrf_id_t vrf_id)
 123 {
 124         struct vrf *vrf = vrf_lookup_by_id(vrf_id);
 125
 126         if (vrf)
 127                 return vrf->info;
 128
 129         return NULL;
 130 }
 131
 132 static int pim_vrf_new(struct vrf *vrf)
 133 {
 134         struct pim_instance *pim = pim_instance_init(vrf);
 135
 136         zlog_debug("VRF Created: %s(%u)", vrf->name, vrf->vrf_id);
 137
 138         vrf->info = (void *)pim;
 139
 140         pim_ssmpingd_init(pim);
 141         return 0;
 142 }
 143
 144 static int pim_vrf_delete(struct vrf *vrf)
 145 {
 146         struct pim_instance *pim = vrf->info;
 147
 148         zlog_debug("VRF Deletion: %s(%u)", vrf->name, vrf->vrf_id);
 149
 150         pim_ssmpingd_destroy(pim);
 151         pim_instance_terminate(pim);
 152         return 0;
 153 }
 154
 155 /*
 156  * Code to turn on the pim instance that
 157  * we have created with new
 158  */
 159 static int pim_vrf_enable(struct vrf *vrf)
 160 {
 161         struct pim_instance *pim = (struct pim_instance *)vrf->info;
 162
 163         zlog_debug("%s: for %s", __PRETTY_FUNCTION__, vrf->name);
 164
 165         pim_mroute_socket_enable(pim);
 166
 167         return 0;
 168 }
 169
 170 static int pim_vrf_disable(struct vrf *vrf)
 171 {
 172         /* Note: This is a callback, the VRF will be deleted by the caller. */
 173         return 0;
 174 }
 175
 176 static int pim_vrf_config_write(struct vty *vty)
 177 {
 178         struct vrf *vrf;
 179         struct pim_instance *pim;
 180
 181         RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) {
 182                 pim = vrf->info;
 183
 184                 if (!pim)
 185                         continue;
 186
 187                 if (vrf->vrf_id != VRF_DEFAULT)
 188                         vty_frame(vty, "vrf %s\n", vrf->name);
 189
 190                 pim_global_config_write_worker(pim, vty);
 191
 192                 if (vrf->vrf_id != VRF_DEFAULT)
 193                         vty_endframe(vty, " exit-vrf\n!\n");
 194         }
 195
 196         return 0;
 197 }
 198
 199 void pim_vrf_init(void)
 200 {
 201         vrf_init(pim_vrf_new, pim_vrf_enable, pim_vrf_disable,
 202                  pim_vrf_delete, NULL);
 203
 204         vrf_cmd_init(pim_vrf_config_write, &pimd_privs);
 205 }
 206
 207 void pim_vrf_terminate(void)
 208 {
 209         vrf_terminate();
 210 }