| #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/talloc.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 = 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_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 = 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, 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); |
| } |