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/*
* PIM for FRR - PIM Instance
* Copyright (C) 2017 Cumulus Networks, Inc.
* Donald Sharp
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
* MA 02110-1301 USA
*/
#include <zebra.h>
#include "hash.h"
#include "vrf.h"
#include "lib_errors.h"
#include "pimd.h"
#include "pim_instance.h"
#include "pim_ssm.h"
#include "pim_rpf.h"
#include "pim_rp.h"
#include "pim_mroute.h"
#include "pim_oil.h"
#include "pim_static.h"
#include "pim_ssmpingd.h"
#include "pim_vty.h"
#include "pim_bsm.h"
#include "pim_mlag.h"
#include "pim_sock.h"
static void pim_instance_terminate(struct pim_instance *pim)
{
pim_vxlan_exit(pim);
if (pim->ssm_info) {
pim_ssm_terminate(pim->ssm_info);
pim->ssm_info = NULL;
}
if (pim->static_routes)
list_delete(&pim->static_routes);
pim_instance_mlag_terminate(pim);
pim_upstream_terminate(pim);
pim_rp_free(pim);
pim_bsm_proc_free(pim);
/* Traverse and cleanup rpf_hash */
if (pim->rpf_hash) {
hash_clean(pim->rpf_hash, (void *)pim_rp_list_hash_clean);
hash_free(pim->rpf_hash);
pim->rpf_hash = NULL;
}
pim_if_terminate(pim);
pim_oil_terminate(pim);
pim_msdp_exit(pim);
close(pim->reg_sock);
pim_mroute_socket_disable(pim);
XFREE(MTYPE_PIM_PLIST_NAME, pim->spt.plist);
XFREE(MTYPE_PIM_PLIST_NAME, pim->register_plist);
pim->vrf = NULL;
XFREE(MTYPE_PIM_PIM_INSTANCE, pim);
}
static struct pim_instance *pim_instance_init(struct vrf *vrf)
{
struct pim_instance *pim;
char hash_name[64];
pim = XCALLOC(MTYPE_PIM_PIM_INSTANCE, sizeof(struct pim_instance));
pim_if_init(pim);
pim->mcast_if_count = 0;
pim->keep_alive_time = PIM_KEEPALIVE_PERIOD;
pim->rp_keep_alive_time = PIM_RP_KEEPALIVE_PERIOD;
pim->ecmp_enable = false;
pim->ecmp_rebalance_enable = false;
pim->vrf = vrf;
pim->spt.switchover = PIM_SPT_IMMEDIATE;
pim->spt.plist = NULL;
pim_msdp_init(pim, router->master);
pim_vxlan_init(pim);
snprintf(hash_name, sizeof(hash_name), "PIM %s RPF Hash", vrf->name);
pim->rpf_hash = hash_create_size(256, pim_rpf_hash_key, pim_rpf_equal,
hash_name);
if (PIM_DEBUG_ZEBRA)
zlog_debug("%s: NHT rpf hash init ", __func__);
pim->ssm_info = pim_ssm_init();
pim->static_routes = list_new();
pim->static_routes->del = (void (*)(void *))pim_static_route_free;
pim->send_v6_secondary = 1;
pim->gm_socket = -1;
pim_rp_init(pim);
pim_bsm_proc_init(pim);
pim_oil_init(pim);
pim_upstream_init(pim);
pim_instance_mlag_init(pim);
pim->last_route_change_time = -1;
pim->reg_sock = pim_reg_sock();
if (pim->reg_sock < 0)
assert(0);
/* MSDP global timer defaults. */
pim->msdp.hold_time = PIM_MSDP_PEER_HOLD_TIME;
pim->msdp.keep_alive = PIM_MSDP_PEER_KA_TIME;
pim->msdp.connection_retry = PIM_MSDP_PEER_CONNECT_RETRY_TIME;
return pim;
}
struct pim_instance *pim_get_pim_instance(vrf_id_t vrf_id)
{
struct vrf *vrf = vrf_lookup_by_id(vrf_id);
if (vrf)
return vrf->info;
return NULL;
}
static int pim_vrf_new(struct vrf *vrf)
{
struct pim_instance *pim = pim_instance_init(vrf);
zlog_debug("VRF Created: %s(%u)", vrf->name, vrf->vrf_id);
vrf->info = (void *)pim;
pim_ssmpingd_init(pim);
return 0;
}
static int pim_vrf_delete(struct vrf *vrf)
{
struct pim_instance *pim = vrf->info;
if (!pim)
return 0;
zlog_debug("VRF Deletion: %s(%u)", vrf->name, vrf->vrf_id);
pim_ssmpingd_destroy(pim);
pim_instance_terminate(pim);
vrf->info = NULL;
return 0;
}
/*
* Code to turn on the pim instance that
* we have created with new
*/
static int pim_vrf_enable(struct vrf *vrf)
{
struct pim_instance *pim = (struct pim_instance *)vrf->info;
struct interface *ifp;
zlog_debug("%s: for %s %u", __func__, vrf->name, vrf->vrf_id);
FOR_ALL_INTERFACES (vrf, ifp) {
if (!ifp->info)
continue;
pim_if_create_pimreg(pim);
break;
}
pim_mroute_socket_enable(pim);
return 0;
}
static int pim_vrf_disable(struct vrf *vrf)
{
/* Note: This is a callback, the VRF will be deleted by the caller. */
return 0;
}
static int pim_vrf_config_write(struct vty *vty)
{
struct vrf *vrf;
struct pim_instance *pim;
RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) {
pim = vrf->info;
if (!pim)
continue;
if (vrf->vrf_id != VRF_DEFAULT)
vty_frame(vty, "vrf %s\n", vrf->name);
pim_global_config_write_worker(pim, vty);
if (vrf->vrf_id != VRF_DEFAULT)
vty_endframe(vty, "exit-vrf\n!\n");
}
return 0;
}
void pim_vrf_init(void)
{
vrf_init(pim_vrf_new, pim_vrf_enable, pim_vrf_disable, pim_vrf_delete);
vrf_cmd_init(pim_vrf_config_write);
}
void pim_vrf_terminate(void)
{
struct vrf *vrf;
RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) {
struct pim_instance *pim;
pim = vrf->info;
if (!pim)
continue;
pim_ssmpingd_destroy(pim);
pim_instance_terminate(pim);
vrf->info = NULL;
}
vrf_terminate();
}
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