109 lines
3.2 KiB
C
109 lines
3.2 KiB
C
#include <string.h>
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#include <errno.h>
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#include <netinet/in.h>
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#include <openbsc/gsm_data.h>
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#include <openbsc/e1_input.h>
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#include <openbsc/trau_frame.h>
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#include <openbsc/trau_mux.h>
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#include <openbsc/misdn.h>
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#define SAPI_L2ML 0
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#define SAPI_OML 62
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#define SAPI_RSL 0 /* 63 ? */
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#define TEI_L2ML 127
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#define TEI_OML 25
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#define TEI_RSL 1
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/* do some compiled-in configuration for our BTS/E1 setup */
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int e1_config(struct gsm_bts *bts, int cardnr, int release_l2)
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{
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struct e1inp_line *line;
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struct e1inp_ts *sign_ts;
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struct e1inp_sign_link *oml_link, *rsl_link;
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line = malloc(sizeof(*line));
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if (!line)
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return -ENOMEM;
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memset(line, 0, sizeof(*line));
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/* create E1 timeslots for signalling and TRAU frames */
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e1inp_ts_config(&line->ts[1-1], line, E1INP_TS_TYPE_SIGN);
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e1inp_ts_config(&line->ts[2-1], line, E1INP_TS_TYPE_TRAU);
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e1inp_ts_config(&line->ts[3-1], line, E1INP_TS_TYPE_TRAU);
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/* create signalling links for TS1 */
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sign_ts = &line->ts[1-1];
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oml_link = e1inp_sign_link_create(sign_ts, E1INP_SIGN_OML,
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bts->c0, TEI_OML, SAPI_OML);
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rsl_link = e1inp_sign_link_create(sign_ts, E1INP_SIGN_RSL,
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bts->c0, TEI_RSL, SAPI_RSL);
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/* create back-links from bts/trx */
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bts->oml_link = oml_link;
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bts->c0->rsl_link = rsl_link;
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/* enable subchannel demuxer on TS2 */
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subch_demux_activate(&line->ts[2-1].trau.demux, 1);
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subch_demux_activate(&line->ts[2-1].trau.demux, 2);
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subch_demux_activate(&line->ts[2-1].trau.demux, 3);
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/* enable subchannel demuxer on TS3 */
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subch_demux_activate(&line->ts[3-1].trau.demux, 0);
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subch_demux_activate(&line->ts[3-1].trau.demux, 1);
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subch_demux_activate(&line->ts[3-1].trau.demux, 2);
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subch_demux_activate(&line->ts[3-1].trau.demux, 3);
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#ifdef HAVE_TRX1
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/* create E1 timeslots for TRAU frames of TRX1 */
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e1inp_ts_config(&line->ts[4-1], line, E1INP_TS_TYPE_TRAU);
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e1inp_ts_config(&line->ts[5-1], line, E1INP_TS_TYPE_TRAU);
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/* create RSL signalling link for TRX1 */
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sign_ts = &line->ts[1-1];
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rsl_link = e1inp_sign_link_create(sign_ts, E1INP_SIGN_RSL,
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&bts->trx[1], TEI_RSL+1, SAPI_RSL);
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/* create back-links from trx */
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bts->trx[1].rsl_link = rsl_link;
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#endif
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return mi_setup(cardnr, line, release_l2);
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}
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/* configure pseudo E1 line in ip.access style and connect to BTS */
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int ia_config_connect(struct gsm_bts *bts, struct sockaddr_in *sin)
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{
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struct e1inp_line *line;
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struct e1inp_ts *sign_ts, *rsl_ts;
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struct e1inp_sign_link *oml_link, *rsl_link;
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line = malloc(sizeof(*line));
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if (!line)
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return NULL;
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memset(line, 0, sizeof(*line));
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/* create E1 timeslots for signalling and TRAU frames */
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e1inp_ts_config(&line->ts[1-1], line, E1INP_TS_TYPE_SIGN);
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e1inp_ts_config(&line->ts[2-1], line, E1INP_TS_TYPE_SIGN);
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/* create signalling links for TS1 */
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sign_ts = &line->ts[1-1];
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rsl_ts = &line->ts[2-1];
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oml_link = e1inp_sign_link_create(sign_ts, E1INP_SIGN_OML,
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bts->c0, 0, 0xff);
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rsl_link = e1inp_sign_link_create(rsl_ts, E1INP_SIGN_RSL,
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bts->c0, 0, 0);
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/* create back-links from bts/trx */
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bts->oml_link = oml_link;
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bts->c0->rsl_link = rsl_link;
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/* default port at BTS for incoming connections is 3006 */
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if (sin->sin_port == 0)
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sin->sin_port = htons(3006);
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return ipaccess_connect(line, sin);
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}
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