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/* OCXO/TCXO calibration control for SysmoBTS management daemon */
/*
* (C) 2014 by Holger Hans Peter Freyther
* (C) 2014 by Harald Welte for the IPA code from the oml router
*
* All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation; either version 3 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 Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "misc/sysmobts_mgr.h"
#include "osmo-bts/msg_utils.h"
#include <osmocom/core/logging.h>
#include <osmocom/core/select.h>
#include <osmocom/gsm/ipa.h>
#include <osmocom/gsm/protocol/ipaccess.h>
#include <osmocom/abis/abis.h>
#include <osmocom/abis/e1_input.h>
#include <osmocom/abis/ipa.h>
static void bts_updown_cb(struct ipa_client_conn *link, int up);
/* Schedule a connect towards the BTS */
static void schedule_bts_connect(struct sysmobts_mgr_instance *mgr)
{
DEBUGP(DLCTRL, "Scheduling BTS connect\n");
osmo_timer_schedule(&mgr->calib.recon_timer, 1, 0);
}
/* BTS re-connect timer call-back */
static void bts_recon_timer_cb(void *data)
{
int rc;
struct sysmobts_mgr_instance *mgr = data;
/* The connection failures are to be expected during boot */
mgr->calib.bts_conn->ofd->when |= BSC_FD_WRITE;
rc = ipa_client_conn_open(mgr->calib.bts_conn);
if (rc < 0) {
LOGP(DLCTRL, LOGL_NOTICE, "Failed to connect to BTS.\n");
schedule_bts_connect(mgr);
}
}
static int bts_read_cb(struct ipa_client_conn *link, struct msgb *msg)
{
int rc;
struct ipaccess_head *hh = (struct ipaccess_head *) msgb_l1(msg);
DEBUGP(DLCTRL, "Received data from BTS: %s\n",
osmo_hexdump(msgb_data(msg), msgb_length(msg)));
/* regular message handling */
rc = msg_verify_ipa_structure(msg);
if (rc < 0) {
LOGP(DLCTRL, LOGL_ERROR,
"Invalid IPA message from BTS (rc=%d)\n", rc);
goto err;
}
switch (hh->proto) {
case IPAC_PROTO_IPACCESS:
/* handle the core IPA CCM messages in libosmoabis */
ipa_ccm_rcvmsg_bts_base(msg, link->ofd);
msgb_free(msg);
break;
default:
LOGP(DLCTRL, LOGL_NOTICE,
"Unhandled stream ID %u from BTS\n", hh->proto);
msgb_free(msg);
break;
}
return 0;
err:
msgb_free(msg);
return -1;
}
/* link to BSC has gone up or down */
static void bts_updown_cb(struct ipa_client_conn *link, int up)
{
struct sysmobts_mgr_instance *mgr = link->data;
LOGP(DLCTRL, LOGL_INFO, "BTS connection %s\n", up ? "up" : "down");
if (up) {
mgr->calib.is_up = 1;
} else {
mgr->calib.is_up = 0;
schedule_bts_connect(mgr);
}
}
int sysmobts_mgr_calib_init(struct sysmobts_mgr_instance *mgr)
{
mgr->calib.bts_conn = ipa_client_conn_create(tall_mgr_ctx, NULL, 0,
"localhost", 4238,
bts_updown_cb, bts_read_cb,
NULL, mgr);
if (!mgr) {
LOGP(DCALIB, LOGL_ERROR,
"Failed to create IPA connection\n");
return -1;
}
mgr->calib.recon_timer.cb = bts_recon_timer_cb;
mgr->calib.recon_timer.data = mgr;
schedule_bts_connect(mgr);
return 0;
}
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