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/* Messages on the Gb interface (A/Gb mode) */
/* (C) 2009-2015 by Harald Welte <laforge@gnumonks.org>
* (C) 2010 by On-Waves
* (C) 2019 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>
*
* 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 Affero 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 <osmocom/core/rate_ctr.h>
#include <osmocom/gprs/gprs_msgb.h>
#include <osmocom/gprs/gprs_bssgp.h>
#include <osmocom/gprs/gprs_ns2.h>
#include <osmocom/gprs/gprs_bssgp_bss.h>
#include <osmocom/sgsn/gprs_llc.h>
#include "config.h"
#include <osmocom/sgsn/gprs_sgsn.h>
#include <osmocom/sgsn/debug.h>
void gprs_ns_prim_status_cb(struct osmo_gprs_ns2_prim *nsp)
{
switch (nsp->u.status.cause) {
case GPRS_NS2_AFF_CAUSE_SNS_CONFIGURED:
LOGP(DGPRS, LOGL_NOTICE, "NS-E %d SNS configured.\n", nsp->nsei);
break;
case GPRS_NS2_AFF_CAUSE_RECOVERY:
LOGP(DGPRS, LOGL_NOTICE, "NS-E %d became available\n", nsp->nsei);
/* workaround for broken BSS which doesn't respond correct to BSSGP status message.
* Sent a BSSGP Reset when a persistent NSVC comes up for the first time. */
if (nsp->u.status.first && nsp->u.status.persistent) {
struct bssgp_bvc_ctx bctx = {
.nsei = nsp->nsei,
};
bssgp_tx_bvc_reset2(&bctx, BVCI_SIGNALLING, BSSGP_CAUSE_EQUIP_FAIL, false);
}
break;
case GPRS_NS2_AFF_CAUSE_FAILURE:
LOGP(DGPRS, LOGL_NOTICE, "NS-E %d became unavailable\n", nsp->nsei);
break;
default:
LOGP(DGPRS, LOGL_NOTICE, "NS: %s Unknown prim %d from NS\n",
get_value_string(osmo_prim_op_names, nsp->oph.operation), nsp->oph.primitive);
break;
}
}
/* call-back function for the NS protocol */
int gprs_ns_prim_cb(struct osmo_prim_hdr *oph, void *ctx)
{
struct osmo_gprs_ns2_prim *nsp;
int rc = 0;
if (oph->sap != SAP_NS)
return 0;
nsp = container_of(oph, struct osmo_gprs_ns2_prim, oph);
if (oph->operation != PRIM_OP_INDICATION) {
LOGP(DGPRS, LOGL_NOTICE, "NS: %s Unknown prim %d from NS\n",
get_value_string(osmo_prim_op_names, oph->operation),
oph->operation);
return 0;
}
switch (oph->primitive) {
case GPRS_NS2_PRIM_UNIT_DATA:
/* hand the message into the BSSGP implementation */
/* add required msg fields for Gb layer */
msgb_bssgph(oph->msg) = oph->msg->l3h;
msgb_bvci(oph->msg) = nsp->bvci;
msgb_nsei(oph->msg) = nsp->nsei;
rc = bssgp_rcvmsg(oph->msg);
break;
case GPRS_NS2_PRIM_STATUS:
gprs_ns_prim_status_cb(nsp);
break;
default:
LOGP(DGPRS, LOGL_NOTICE, "NS: %s Unknown prim %d from NS\n",
get_value_string(osmo_prim_op_names, oph->operation), oph->primitive);
break;
}
if (oph->msg)
msgb_free(oph->msg);
return rc;
}
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