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/* link management code */
/*
* (C) 2010-2011 by Holger Hans Peter Freyther <zecke@selfish.org>
* (C) 2010-2011 by On-Waves
* All Rights Reserved
*
* 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; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#include <bsc_data.h>
#include <cellmgr_debug.h>
#include <mtp_data.h>
#include <snmp_mtp.h>
#include <osmocore/talloc.h>
extern struct bsc_data bsc;
void mtp_link_down(struct link_data *link)
{
mtp_linkset_down(link->the_link);
link->clear_queue(link);
mtp_link_set_init_slc(link->the_link);
}
void mtp_link_up(struct link_data *link)
{
mtp_linkset_up(link->the_link);
mtp_link_set_init_slc(link->the_link);
}
void mtp_link_set_sccp_down(struct mtp_link_set *link)
{
}
void mtp_link_set_submit(struct link_data *link, struct msgb *msg)
{
link->write(link, msg);
}
void mtp_link_restart(struct link_data *link)
{
LOGP(DINP, LOGL_ERROR, "Need to restart the SS7 link.\n");
link->reset(link);
}
static void start_rest(void *start)
{
struct link_data *data;
bsc.setup = 1;
if (msc_init(&bsc, 1) != 0) {
fprintf(stderr, "Failed to init MSC part.\n");
exit(3);
}
llist_for_each_entry(data, &bsc.link_set->links, entry)
data->start(data);
}
int link_init(struct bsc_data *bsc)
{
struct link_data *lnk;
bsc->link_set = mtp_link_set_alloc();
bsc->link_set->dpc = bsc->dpc;
bsc->link_set->opc = bsc->opc;
bsc->link_set->sccp_opc = bsc->sccp_opc > -1 ? bsc->sccp_opc : bsc->opc;
bsc->link_set->sltm_once = bsc->once;
bsc->link_set->ni = bsc->ni_ni;
bsc->link_set->spare = bsc->ni_spare;
bsc->link_set->bsc = bsc;
lnk = talloc_zero(bsc->link_set, struct link_data);
lnk->bsc = bsc;
lnk->udp.link_index = 1;
lnk->pcap_fd = bsc->pcap_fd;
lnk->udp.reset_timeout = bsc->udp_reset_timeout;
lnk->the_link = bsc->link_set;
mtp_link_set_add_link(bsc->link_set, lnk);
if (!bsc->src_port) {
LOGP(DINP, LOGL_ERROR, "You need to set a UDP address.\n");
return -1;
}
LOGP(DINP, LOGL_NOTICE, "Using UDP MTP mode.\n");
/* setup SNMP first, it is blocking */
lnk->udp.session = snmp_mtp_session_create(bsc->udp_ip);
if (!lnk->udp.session)
return -1;
/* now connect to the transport */
if (link_udp_init(lnk, bsc->src_port, bsc->udp_ip, bsc->udp_port) != 0)
return -1;
/*
* We will ask the MTP link to be taken down for two
* timeouts of the BSC to make sure we are missing the
* SLTM and it begins a reset. Then we will take it up
* again and do the usual business.
*/
snmp_mtp_deactivate(lnk->udp.session,
lnk->udp.link_index);
bsc->start_timer.cb = start_rest;
bsc->start_timer.data = &bsc;
bsc_schedule_timer(&bsc->start_timer, lnk->udp.reset_timeout, 0);
LOGP(DMSC, LOGL_NOTICE, "Making sure SLTM will timeout.\n");
return 0;
}
int link_shutdown_all(struct mtp_link_set *set)
{
struct link_data *lnk;
llist_for_each_entry(lnk, &set->links, entry)
lnk->shutdown(lnk);
return 0;
}
int link_reset_all(struct mtp_link_set *set)
{
struct link_data *lnk;
llist_for_each_entry(lnk, &set->links, entry)
lnk->reset(lnk);
return 0;
}
int link_clear_all(struct mtp_link_set *set)
{
struct link_data *lnk;
llist_for_each_entry(lnk, &set->links, entry)
lnk->clear_queue(lnk);
return 0;
}
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