420 lines
10 KiB
C
420 lines
10 KiB
C
/* GSM Network Management (OML) messages on the A-bis interface
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* 3GPP TS 12.21 version 8.0.0 Release 1999 / ETSI TS 100 623 V8.0.0 */
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/* (C) 2008 by Harald Welte <laforge@gnumonks.org>
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* All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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*/
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#include <errno.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include "gsm_data.h"
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#include "debug.h"
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#include "msgb.h"
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#include "abis_nm.h"
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#define OM_ALLOC_SIZE 1024
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/* unidirectional messages from BTS to BSC */
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static const enum abis_nm_msgtype reports[] = {
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NM_MT_SW_ACTIVATED_REP,
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NM_MT_TEST_REP,
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NM_MT_STATECHG_EVENT_REP,
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NM_MT_FAILURE_EVENT_REP,
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};
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/* messages without ACK/NACK */
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static const enum abis_nm_msgtype no_ack_nack[] = {
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NM_MT_MEAS_RES_REQ,
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NM_MT_STOP_MEAS,
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NM_MT_START_MEAS,
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};
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/* Attributes that the BSC can set, not only get, according to Section 9.4 */
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static const enum abis_nm_attr nm_att_settable[] = {
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NM_ATT_ADD_INFO,
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NM_ATT_ADD_TEXT,
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NM_ATT_DEST,
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NM_ATT_EVENT_TYPE,
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NM_ATT_FILE_DATA,
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NM_ATT_GET_ARI,
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NM_ATT_HW_CONF_CHG,
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NM_ATT_LIST_REQ_ATTR,
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NM_ATT_MDROP_LINK,
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NM_ATT_MDROP_NEXT,
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NM_ATT_NACK_CAUSES,
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NM_ATT_OUTST_ALARM,
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NM_ATT_PHYS_CONF,
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NM_ATT_PROB_CAUSE,
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NM_ATT_RAD_SUBC,
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NM_ATT_SOURCE,
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NM_ATT_SPEC_PROB,
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NM_ATT_START_TIME,
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NM_ATT_TEST_DUR,
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NM_ATT_TEST_NO,
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NM_ATT_TEST_REPORT,
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NM_ATT_WINDOW_SIZE,
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NM_ATT_SEVERITY,
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NM_ATT_MEAS_RES,
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NM_ATT_MEAS_TYPE,
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};
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static int is_in_arr(enum abis_nm_msgtype mt, const enum abis_nm_msgtype *arr, int size)
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{
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int i;
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for (i = 0; i < size; i++) {
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if (arr[i] == mt)
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return 1;
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}
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return 0;
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}
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/* is this msgtype the usual ACK/NACK type ? */
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static int is_ack_nack(enum abis_nm_msgtype mt)
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{
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return !is_in_arr(mt, no_ack_nack, ARRAY_SIZE(no_ack_nack));
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}
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/* is this msgtype a report ? */
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static int is_report(enum abis_nm_msgtype mt)
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{
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return is_in_arr(mt, reports, ARRA_YSIZE(reports));
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}
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#define MT_ACK(x) (x+1)
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#define MT_NACK(x) (x+2)
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static void fill_om_hdr(struct abis_om_hdr *oh, u_int8_t len)
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{
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oh->mdisc = ABIS_OM_MDISC_FOM;
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oh->placement = ABIS_OM_PLACEMENT_ONLY;
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oh->sequence = 0;
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oh->length = len;
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}
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static void fill_om_fom_hdr(struct abis_om_hdr *oh, u_int8_t len,
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u_int8_t msg_type, u_int8_t obj_class,
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u_int8_t bts_nr, u_int8_t trx_nr, u_int8_t ts_nr)
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{
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struct abis_om_fom_hdr *foh =
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(struct abis_om_fom_hdr *) oh->data;
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fill_om_hdr(oh, len);
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foh->msg_type = msg_type;
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foh->obj_class = obj_class;
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foh->obj_inst.bts_nr = bts_nr;
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foh->obj_inst.trx_nr = trx_nr;
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foh->obj_inst.ts_nr = ts_nr;
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}
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/* Send a OML NM Message from BSC to BTS */
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int abis_nm_sendmsg(struct gsm_bts *bts, struct msgb *msg)
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{
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/* FIXME */
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}
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/* Receive a OML NM Message from BTS */
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static int abis_nm_rcvmsg(struct msgb *mb)
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{
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struct abis_om_fom_hdr *foh = msgb_l3(mb);
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u_int8_t mt = foh->msg_type;
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/* check for unsolicited message */
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if (is_report(mt)) {
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nmh->cfg->report_cb(mb, foh);
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return 0;
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}
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/* check if last message is to be acked */
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if (is_ack_nack(nmh->last_msgtype)) {
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if (mt == MT_ACK(nmh->last_msgtype)) {
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fprintf(stderr, "received ACK (0x%x)\n",
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foh->msg_type);
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/* we got our ACK, continue sending the next msg */
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} else if (mt == MT_NACK(nmh->last_msgtype)) {
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/* we got a NACK, signal this to the caller */
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fprintf(stderr, "received NACK (0x%x)\n",
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foh->msg_type);
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/* FIXME: somehow signal this to the caller */
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} else {
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/* really strange things happen */
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return -EINVAL;
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}
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}
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}
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/* High-Level API */
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/* Entry-point where L2 OML from BTS enters the NM code */
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int abis_nm_rx(struct msgb *msg)
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{
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int rc;
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struct abis_om_hdr *oh = msgb_l2(msg);
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unsigned int l2_len = msg->tail - msg_l2(msg);
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/* Various consistency checks */
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if (oh->placement != ABIS_OM_PLACEMENT_ONLY) {
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fprintf(stderr, "ABIS OML placement 0x%x not supported\n",
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oh->placement);
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return -EINVAL;
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}
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if (oh->sequence != 0) {
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fprintf(stderr, "ABIS OML sequence 0x%x != 0x00\n",
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oh->sequence);
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return -EINVAL;
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}
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if (oh->length + sizeof(*oh) > l2_len) {
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fprintf(stderr, "ABIS OML truncated message (%u > %u)\n",
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oh->length + sizeof(*oh), l2_len);
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return -EINVAL;
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}
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if (oh->length + sizeof(*oh) < l2_len)
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fprintf(stderr, "ABIS OML message with extra trailer?!?\n");
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msg->l3_off = ((unsigned char *)oh + sizeof(*oh)) - msg->head;
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switch (oh->mdisc) {
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case ABIS_OM_MDISC_FOM:
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rc = abis_nm_rcvmsg(msg);
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break;
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case ABIS_OM_MDISC_MMI:
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case ABIS_OM_MDISC_TRAU:
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case ABIS_OM_MDISC_MANUF:
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default:
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fprintf(stderr, "unknown ABIS OML message discriminator 0x%x\n",
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oh->mdisc);
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return -EINVAL;
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}
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return rc;
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}
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#if 0
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/* initialized all resources */
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struct abis_nm_h *abis_nm_init(struct abis_nm_cfg *cfg)
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{
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struct abis_nm_h *nmh;
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nmh = malloc(sizeof(*nmh));
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if (!nmh)
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return NULL;
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nmh->cfg = cfg;
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return nmh;
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}
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/* free all resources */
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void abis_nm_fini(struct abis_nm_h *nmh)
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{
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free(nmh);
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}
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#endif
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/* Here we are trying to define a high-level API that can be used by
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* the actual BSC implementation. However, the architecture is currently
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* still under design. Ideally the calls to this API would be synchronous,
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* while the underlying stack behind the APi runs in a traditional select
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* based state machine.
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*/
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/* 6.2 Software Load: FIXME */
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#if 0
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struct abis_nm_sw {
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/* this will become part of the SW LOAD INITIATE */
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u_int8_t obj_class;
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u_int8_t obj_instance[3];
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u_int8_t sw_description[255];
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u_int16_t window_size;
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/* the actual data that is to be sent subsequently */
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unsigned char *sw;
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unsigned int sw_len;
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};
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/* Load the specified software into the BTS */
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int abis_nm_sw_load(struct abis_nm_h *h, struct abis_nm_sw *sw);
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{
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/* FIXME: Implementation */
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}
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/* Activate the specified software into the BTS */
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int abis_nm_sw_activate(struct abis_nm_h *h)
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{
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}
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#endif
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static fill_nm_channel(struct abis_nm_channel *ch, u_int8_t bts_port,
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u_int8_t ts_nr, u_int8_t subslot_nr)
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{
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ch->attrib = NM_ATT_CHANNEL;
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ch->bts_port = bts_port;
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ch->timeslot = ts_nr;
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ch->subslot = subslot_nr;
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}
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int abis_nm_establish_tei(struct gsm_bts *bts, u_int8_t trx_nr,
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u_int8_t e1_port, u_int8_t e1_timeslot, u_int8_t e1_subslot,
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u_int8_t tei)
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{
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struct abis_om_hdr *oh;
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struct abis_nm_channel *ch;
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u_int8_t *tei_attr;
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u_int8_t len = 2 + sizeof(*ch);
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struct mgsb *msg = msgb_alloc(OM_ALLOC_SIZE);
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oh = (struct abis_om_hdr *) msgb_put(msg, ABIS_OM_FOM_HDR_SIZE);
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fill_om_fom_hdr(oh, len, NM_MT_ESTABLISH_TEI, NM_OC_RADIO_CARRIER,
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bts->bts_nr, trx_nr, 0xff);
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msgb_tv_put(msgb, NM_ATT_TEI, tei);
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ch = (struct abis_nm_channel *) msgb_put(msg, sizeof(*ch));
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fill_nm_channel(ch, e1_port, e1_timeslot, e1_subslot);
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return abis_nm_sendmsg(bts, msg);
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}
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/* connect signalling of one (BTS,TRX) to a particular timeslot on the E1 */
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int abis_nm_conn_terr_sign(struct gsm_bts_trx *trx,
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u_int8_t e1_port, u_int8_t e1_timeslot, u_int8_t e1_subslot)
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{
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struct gsm_bts *bts = ts->trx->bts;
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struct abis_om_hdr *oh;
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struct abis_nm_channel *ch;
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struct mgsb *msg = msgb_alloc(OM_ALLOC_SIZE);
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oh = (struct abis_om_hdr *) msgb_put(msg, ABIS_OM_FOM_HDR_SIZE);
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fill_om_fom_hdr(oh, sizeof(*ch), NM_MT_CONN_TERR_SIGN,
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NM_OC_RADIO_CARRIER, bts->bts_nr, trx->nr, 0xff);
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ch = (struct abis_nm_channel *) msgb_put(msg, sizeof(*ch));
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fill_nm_channel(ch, e1_port, e1_timeslot, e1_subslot);
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return abis_nm_sendmsg(bts, msg);
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}
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#if 0
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int abis_nm_disc_terr_sign(struct abis_nm_h *h, struct abis_om_obj_inst *inst,
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struct abis_nm_abis_channel *chan)
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{
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}
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#endif
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int abis_nm_conn_terr_traf(struct gsm_bts_trx_ts *ts,
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u_int8_t e1_port, u_int8_t e1_timeslot,
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u_int8_t e1_subslot)
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{
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struct gsm_bts *bts = ts->trx->bts;
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struct abis_om_hdr *oh;
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struct abis_nm_channel *ch;
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struct msgb *msg = msgb_alloc(OM_ALLOC_SIZE);
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oh = (struct abis_om_hdr *) msgb_put(msg, ABIS_OM_FOM_HDR_SIZE);
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fill_om_fom_hdr(oh, sizeof(*ch), NM_MT_CONN_TERR_TRAF,
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NM_OC_BASEB_TRANSC, bts->bts_nr, ts->trx->nr, ts->nr);
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ch = (struct abis_nm_channel *) msgb_put(msg, sizeof(*ch));
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fill_nm_channel(ch, e1_port, e1_timeslot, e1_subslot);
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return abis_nm_sendmsg(bts, msg);
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}
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#if 0
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int abis_nm_disc_terr_traf(struct abis_nm_h *h, struct abis_om_obj_inst *inst,
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struct abis_nm_abis_channel *chan,
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u_int8_t subchan)
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{
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}
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#endif
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int abis_nm_set_channel_attr(struct gsm_bts_trx_ts *ts, u_int8_t chan_comb)
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{
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struct gsm_bts *bts = ts->trx->bts;
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struct abis_om_hdr *oh;
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u_int8_t arfcn = htons(ts->trx->arfcn);
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u_int8_t zero = 0x00;
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struct msgb *msg = msgb_alloc(OM_ALLOC_SIZE);
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oh = (struct abis_om_hdr *) msgb_put(msg, ABIS_OM_FOM_HDR_SIZE);
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fill_om_fom_hdr(oh, sizeof(*ch), NM_MT_SET_CHAN_ATTR,
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NM_OC_BASEB_TRANSC, bts->bts_nr,
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ts->trx->nr, ts->nr);
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/* FIXME: don't send ARFCN list, hopping sequence, mAIO, ...*/
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msgb_tlv16_put(msg, NM_ATT_ARFCN_LIST, 1, &arfcn);
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msgb_tv_put(msg, NM_ATT_CHAN_COMB, chan_comb);
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msgb_tv_put(msg, NM_ATT_HSN, 0x00);
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msgb_tv_put(msg, NM_ATT_MAIO, 0x00);
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msgb_tv_put(msg, NM_ATT_TSC, 0x07); /* training sequence */
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msgb_tlv_put(msg, 0x59, 1, &zero);
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return abis_nm_sendmsg(bts, msg);
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}
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int abis_nm_raw_msg(struct gsm_bts *bts, int len, u_int8_t *msg)
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{
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struct msgb *msg = msgb_alloc(OM_ALLOC_SIZE);
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u_int8_t *data;
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oh = (struct abis_om_hdr *) msgb_put(msg, sizeof(*oh));
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fill_om_hdr(oh, len);
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data = msgb_put(msg, len);
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memcpy(msgb->data, msg, len);
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return abis_nm_sendmsg(bts, msg);
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}
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/* Siemens specific commands */
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static int __simple_cmd(struct gsm_bts *bts, u_int8_t msg_type)
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{
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struct abis_om_hdr *oh;
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struct msg = msgb_alloc(OM_ALLOC_SIZE);
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oh = (struct abis_om_hdr *) msgb_put(msg, ABIS_OM_FOM_HDR_SIZE);
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fill_om_fom_hdr(oh, sizeof(*ch), msg_type, NM_OC_SITE_MANAGER,
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0xff, 0xff, 0xff);
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return abis_nm_sendmsg(bts, msg);
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}
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int abis_nm_event_reports(struct gsm_bts *bts, int on)
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{
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if (on == 0)
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return __simple_cmd(bts, 0x63);
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else
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return __simple_cmd(bts, 0x66);
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}
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int abis_nm_reset_resource(struct gsm_bts *bts)
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{
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return __simple_cmd(bts, 0x74);
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}
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int abis_nm_db_transaction(struct gsm_bts *bts, int begin)
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{
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if (begin)
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return __simple_cmd(bts, 0xA3);
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else
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return __simple_cmd(bts, 0xA6);
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}
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