diff options
Diffstat (limited to 'openbsc/src/e1_config.c')
| -rw-r--r-- | openbsc/src/e1_config.c | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/openbsc/src/e1_config.c b/openbsc/src/e1_config.c new file mode 100644 index 000000000..fc23b55e1 --- /dev/null +++ b/openbsc/src/e1_config.c @@ -0,0 +1,108 @@ +#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> + +#define SAPI_L2ML 0 +#define SAPI_OML 62 +#define SAPI_RSL 0 /* 63 ? */ + +#define TEI_L2ML 127 +#define TEI_OML 25 +#define TEI_RSL 1 + +/* 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; + + line = malloc(sizeof(*line)); + if (!line) + return -ENOMEM; + memset(line, 0, sizeof(*line)); + + /* 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_TRAU); + e1inp_ts_config(&line->ts[3-1], line, E1INP_TS_TYPE_TRAU); + + /* create signalling links for TS1 */ + sign_ts = &line->ts[1-1]; + oml_link = e1inp_sign_link_create(sign_ts, E1INP_SIGN_OML, + bts->c0, TEI_OML, SAPI_OML); + rsl_link = e1inp_sign_link_create(sign_ts, E1INP_SIGN_RSL, + bts->c0, TEI_RSL, SAPI_RSL); + + /* create back-links from bts/trx */ + bts->oml_link = oml_link; + bts->c0->rsl_link = rsl_link; + + /* enable subchannel demuxer on TS2 */ + subch_demux_activate(&line->ts[2-1].trau.demux, 1); + subch_demux_activate(&line->ts[2-1].trau.demux, 2); + subch_demux_activate(&line->ts[2-1].trau.demux, 3); + + /* enable subchannel demuxer on TS3 */ + subch_demux_activate(&line->ts[3-1].trau.demux, 0); + subch_demux_activate(&line->ts[3-1].trau.demux, 1); + subch_demux_activate(&line->ts[3-1].trau.demux, 2); + subch_demux_activate(&line->ts[3-1].trau.demux, 3); + +#ifdef HAVE_TRX1 + /* create E1 timeslots for TRAU frames of TRX1 */ + e1inp_ts_config(&line->ts[4-1], line, E1INP_TS_TYPE_TRAU); + e1inp_ts_config(&line->ts[5-1], line, E1INP_TS_TYPE_TRAU); + + /* create RSL signalling link for TRX1 */ + sign_ts = &line->ts[1-1]; + rsl_link = e1inp_sign_link_create(sign_ts, E1INP_SIGN_RSL, + &bts->trx[1], TEI_RSL+1, SAPI_RSL); + /* create back-links from trx */ + bts->trx[1].rsl_link = rsl_link; +#endif + + return mi_setup(cardnr, line, release_l2); +} + +/* 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 = malloc(sizeof(*line)); + if (!line) + return NULL; + memset(line, 0, sizeof(*line)); + + /* 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, 0, 0xff); + 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); +} |