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authorJonathan Santos <jrsantos@jonathanrsantos.com>2011-05-25 13:54:02 -0400
committerJonathan Santos <jrsantos@jonathanrsantos.com>2011-05-25 13:54:02 -0400
commit03fd8d014f9871896a86534432c8757d65a576fe (patch)
treebad087cacfb6b106f6ca542bf92ef2e2ecea5dd3 /src/libbsc/e1_config.c
parente7dae79f5839029279c9fd4543804882c019bf42 (diff)
Import upstream version 0.9.13upstream/0.9.13
Diffstat (limited to 'src/libbsc/e1_config.c')
-rw-r--r--src/libbsc/e1_config.c296
1 files changed, 296 insertions, 0 deletions
diff --git a/src/libbsc/e1_config.c b/src/libbsc/e1_config.c
new file mode 100644
index 00000000..958839dc
--- /dev/null
+++ b/src/libbsc/e1_config.c
@@ -0,0 +1,296 @@
+/* OpenBSC E1 Input code */
+
+/* (C) 2008-2010 by Harald Welte <laforge@gnumonks.org>
+ * 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 <string.h>
+#include <errno.h>
+
+#include <netinet/in.h>
+
+#include <openbsc/gsm_data.h>
+#include <openbsc/e1_input.h>
+#include <openbsc/trau_frame.h>
+#include <openbsc/trau_mux.h>
+#include <openbsc/misdn.h>
+#include <openbsc/ipaccess.h>
+#include <osmocore/talloc.h>
+#include <openbsc/debug.h>
+
+#define SAPI_L2ML 0
+#define SAPI_OML 62
+#define SAPI_RSL 0 /* 63 ? */
+
+/* The e1_reconfig_*() functions below tale the configuration present in the
+ * bts/trx/ts data structures and ensure the E1 configuration reflects the
+ * timeslot/subslot/TEI configuration */
+
+int e1_reconfig_ts(struct gsm_bts_trx_ts *ts)
+{
+ struct gsm_e1_subslot *e1_link = &ts->e1_link;
+ struct e1inp_line *line;
+ struct e1inp_ts *e1_ts;
+
+ DEBUGP(DMI, "e1_reconfig_ts(%u,%u,%u)\n", ts->trx->bts->nr, ts->trx->nr, ts->nr);
+
+ if (!e1_link->e1_ts) {
+ LOGP(DINP, LOGL_ERROR, "TS (%u/%u/%u) without E1 timeslot?\n",
+ ts->nr, ts->trx->nr, ts->trx->bts->nr);
+ return 0;
+ }
+
+ line = e1inp_line_get(e1_link->e1_nr);
+ if (!line) {
+ LOGP(DINP, LOGL_ERROR, "TS (%u/%u/%u) referring to "
+ "non-existing E1 line %u\n", ts->nr, ts->trx->nr,
+ ts->trx->bts->nr, e1_link->e1_nr);
+ return -ENOMEM;
+ }
+
+ switch (ts->pchan) {
+ case GSM_PCHAN_TCH_F:
+ case GSM_PCHAN_TCH_H:
+ e1_ts = &line->ts[e1_link->e1_ts-1];
+ e1inp_ts_config(e1_ts, line, E1INP_TS_TYPE_TRAU);
+ subch_demux_activate(&e1_ts->trau.demux, e1_link->e1_ts_ss);
+ break;
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+int e1_reconfig_trx(struct gsm_bts_trx *trx)
+{
+ struct gsm_e1_subslot *e1_link = &trx->rsl_e1_link;
+ struct e1inp_ts *sign_ts;
+ struct e1inp_line *line;
+ struct e1inp_sign_link *rsl_link;
+ int i;
+
+ if (!e1_link->e1_ts) {
+ LOGP(DINP, LOGL_ERROR, "TRX (%u/%u) RSL link without "
+ "timeslot?\n", trx->bts->nr, trx->nr);
+ return -EINVAL;
+ }
+
+ /* RSL Link */
+ line = e1inp_line_get(e1_link->e1_nr);
+ if (!line) {
+ LOGP(DINP, LOGL_ERROR, "TRX (%u/%u) RSL link referring "
+ "to non-existing E1 line %u\n", trx->bts->nr,
+ trx->nr, e1_link->e1_nr);
+ return -ENOMEM;
+ }
+ sign_ts = &line->ts[e1_link->e1_ts-1];
+ e1inp_ts_config(sign_ts, line, E1INP_TS_TYPE_SIGN);
+ /* Ericsson RBS have a per-TRX OML link in parallel to RSL */
+ if (trx->bts->type == GSM_BTS_TYPE_RBS2000) {
+ struct e1inp_sign_link *oml_link;
+ oml_link = e1inp_sign_link_create(sign_ts, E1INP_SIGN_OML, trx,
+ trx->rsl_tei, SAPI_OML);
+ if (!oml_link) {
+ LOGP(DINP, LOGL_ERROR, "TRX (%u/%u) OML link creation "
+ "failed\n", trx->bts->nr, trx->nr);
+ return -ENOMEM;
+ }
+ if (trx->oml_link)
+ e1inp_sign_link_destroy(trx->oml_link);
+ trx->oml_link = oml_link;
+ }
+ rsl_link = e1inp_sign_link_create(sign_ts, E1INP_SIGN_RSL,
+ trx, trx->rsl_tei, SAPI_RSL);
+ if (!rsl_link) {
+ LOGP(DINP, LOGL_ERROR, "TRX (%u/%u) RSL link creation "
+ "failed\n", trx->bts->nr, trx->nr);
+ return -ENOMEM;
+ }
+ if (trx->rsl_link)
+ e1inp_sign_link_destroy(trx->rsl_link);
+ trx->rsl_link = rsl_link;
+
+ for (i = 0; i < TRX_NR_TS; i++)
+ e1_reconfig_ts(&trx->ts[i]);
+
+ return 0;
+}
+
+int e1_reconfig_bts(struct gsm_bts *bts)
+{
+ struct gsm_e1_subslot *e1_link = &bts->oml_e1_link;
+ struct e1inp_ts *sign_ts;
+ struct e1inp_line *line;
+ struct e1inp_sign_link *oml_link;
+ struct gsm_bts_trx *trx;
+
+ DEBUGP(DMI, "e1_reconfig_bts(%u)\n", bts->nr);
+
+ if (!e1_link->e1_ts) {
+ LOGP(DINP, LOGL_ERROR, "BTS %u OML link without timeslot?\n",
+ bts->nr);
+ return -EINVAL;
+ }
+
+ /* OML link */
+ line = e1inp_line_get(e1_link->e1_nr);
+ if (!line) {
+ LOGP(DINP, LOGL_ERROR, "BTS %u OML link referring to "
+ "non-existing E1 line %u\n", bts->nr, e1_link->e1_nr);
+ return -ENOMEM;
+ }
+ sign_ts = &line->ts[e1_link->e1_ts-1];
+ e1inp_ts_config(sign_ts, line, E1INP_TS_TYPE_SIGN);
+ oml_link = e1inp_sign_link_create(sign_ts, E1INP_SIGN_OML,
+ bts->c0, bts->oml_tei, SAPI_OML);
+ if (!oml_link) {
+ LOGP(DINP, LOGL_ERROR, "BTS %u OML link creation failed\n",
+ bts->nr);
+ return -ENOMEM;
+ }
+ if (bts->oml_link)
+ e1inp_sign_link_destroy(bts->oml_link);
+ bts->oml_link = oml_link;
+
+ llist_for_each_entry(trx, &bts->trx_list, list)
+ e1_reconfig_trx(trx);
+
+ /* notify E1 input something has changed */
+ return e1inp_line_update(line);
+}
+
+#if 0
+/* do some compiled-in configuration for our BTS/E1 setup */
+int e1_config(struct gsm_bts *bts, int cardnr, int release_l2)
+{
+ struct e1inp_line *line;
+ struct e1inp_ts *sign_ts;
+ struct e1inp_sign_link *oml_link, *rsl_link;
+ struct gsm_bts_trx *trx = bts->c0;
+ int base_ts;
+
+ switch (bts->nr) {
+ case 0:
+ /* First BTS uses E1 TS 01,02,03,04,05 */
+ base_ts = HARDCODED_BTS0_TS - 1;
+ break;
+ case 1:
+ /* Second BTS uses E1 TS 06,07,08,09,10 */
+ base_ts = HARDCODED_BTS1_TS - 1;
+ break;
+ case 2:
+ /* Third BTS uses E1 TS 11,12,13,14,15 */
+ base_ts = HARDCODED_BTS2_TS - 1;
+ default:
+ return -EINVAL;
+ }
+
+ line = talloc_zero(tall_bsc_ctx, struct e1inp_line);
+ if (!line)
+ return -ENOMEM;
+
+ /* create E1 timeslots for signalling and TRAU frames */
+ e1inp_ts_config(&line->ts[base_ts+1-1], line, E1INP_TS_TYPE_SIGN);
+ e1inp_ts_config(&line->ts[base_ts+2-1], line, E1INP_TS_TYPE_TRAU);
+ e1inp_ts_config(&line->ts[base_ts+3-1], line, E1INP_TS_TYPE_TRAU);
+
+ /* create signalling links for TS1 */
+ sign_ts = &line->ts[base_ts+1-1];
+ oml_link = e1inp_sign_link_create(sign_ts, E1INP_SIGN_OML,
+ trx, TEI_OML, SAPI_OML);
+ rsl_link = e1inp_sign_link_create(sign_ts, E1INP_SIGN_RSL,
+ trx, TEI_RSL, SAPI_RSL);
+
+ /* create back-links from bts/trx */
+ bts->oml_link = oml_link;
+ trx->rsl_link = rsl_link;
+
+ /* enable subchannel demuxer on TS2 */
+ subch_demux_activate(&line->ts[base_ts+2-1].trau.demux, 1);
+ subch_demux_activate(&line->ts[base_ts+2-1].trau.demux, 2);
+ subch_demux_activate(&line->ts[base_ts+2-1].trau.demux, 3);
+
+ /* enable subchannel demuxer on TS3 */
+ subch_demux_activate(&line->ts[base_ts+3-1].trau.demux, 0);
+ subch_demux_activate(&line->ts[base_ts+3-1].trau.demux, 1);
+ subch_demux_activate(&line->ts[base_ts+3-1].trau.demux, 2);
+ subch_demux_activate(&line->ts[base_ts+3-1].trau.demux, 3);
+
+ trx = gsm_bts_trx_num(bts, 1);
+ if (trx) {
+ /* create E1 timeslots for TRAU frames of TRX1 */
+ e1inp_ts_config(&line->ts[base_ts+4-1], line, E1INP_TS_TYPE_TRAU);
+ e1inp_ts_config(&line->ts[base_ts+5-1], line, E1INP_TS_TYPE_TRAU);
+
+ /* create RSL signalling link for TRX1 */
+ sign_ts = &line->ts[base_ts+1-1];
+ rsl_link = e1inp_sign_link_create(sign_ts, E1INP_SIGN_RSL,
+ trx, TEI_RSL+1, SAPI_RSL);
+ /* create back-links from trx */
+ trx->rsl_link = rsl_link;
+
+ /* enable subchannel demuxer on TS2 */
+ subch_demux_activate(&line->ts[base_ts+4-1].trau.demux, 0);
+ subch_demux_activate(&line->ts[base_ts+4-1].trau.demux, 1);
+ subch_demux_activate(&line->ts[base_ts+4-1].trau.demux, 2);
+ subch_demux_activate(&line->ts[base_ts+4-1].trau.demux, 3);
+
+ /* enable subchannel demuxer on TS3 */
+ subch_demux_activate(&line->ts[base_ts+5-1].trau.demux, 0);
+ subch_demux_activate(&line->ts[base_ts+5-1].trau.demux, 1);
+ subch_demux_activate(&line->ts[base_ts+5-1].trau.demux, 2);
+ subch_demux_activate(&line->ts[base_ts+5-1].trau.demux, 3);
+ }
+
+ return mi_setup(cardnr, line, release_l2);
+}
+#endif
+
+/* configure pseudo E1 line in ip.access style and connect to BTS */
+int ia_config_connect(struct gsm_bts *bts, struct sockaddr_in *sin)
+{
+ struct e1inp_line *line;
+ struct e1inp_ts *sign_ts, *rsl_ts;
+ struct e1inp_sign_link *oml_link, *rsl_link;
+
+ line = talloc_zero(tall_bsc_ctx, struct e1inp_line);
+ if (!line)
+ return -ENOMEM;
+
+ /* create E1 timeslots for signalling and TRAU frames */
+ e1inp_ts_config(&line->ts[1-1], line, E1INP_TS_TYPE_SIGN);
+ e1inp_ts_config(&line->ts[2-1], line, E1INP_TS_TYPE_SIGN);
+
+ /* create signalling links for TS1 */
+ sign_ts = &line->ts[1-1];
+ rsl_ts = &line->ts[2-1];
+ oml_link = e1inp_sign_link_create(sign_ts, E1INP_SIGN_OML,
+ bts->c0, 0xff, 0);
+ rsl_link = e1inp_sign_link_create(rsl_ts, E1INP_SIGN_RSL,
+ bts->c0, 0, 0);
+
+ /* create back-links from bts/trx */
+ bts->oml_link = oml_link;
+ bts->c0->rsl_link = rsl_link;
+
+ /* default port at BTS for incoming connections is 3006 */
+ if (sin->sin_port == 0)
+ sin->sin_port = htons(3006);
+
+ return ipaccess_connect(line, sin);
+}