Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1 | #include <string.h> |
| 2 | #include <errno.h> |
| 3 | |
| 4 | #include <netinet/in.h> |
| 5 | |
| 6 | #include <openbsc/gsm_data.h> |
| 7 | #include <openbsc/e1_input.h> |
| 8 | #include <openbsc/trau_frame.h> |
| 9 | #include <openbsc/trau_mux.h> |
| 10 | #include <openbsc/misdn.h> |
| 11 | |
| 12 | #define SAPI_L2ML 0 |
| 13 | #define SAPI_OML 62 |
| 14 | #define SAPI_RSL 0 /* 63 ? */ |
| 15 | |
| 16 | #define TEI_L2ML 127 |
| 17 | #define TEI_OML 25 |
| 18 | #define TEI_RSL 1 |
| 19 | |
| 20 | /* do some compiled-in configuration for our BTS/E1 setup */ |
| 21 | int e1_config(struct gsm_bts *bts, int cardnr, int release_l2) |
| 22 | { |
| 23 | struct e1inp_line *line; |
| 24 | struct e1inp_ts *sign_ts; |
| 25 | struct e1inp_sign_link *oml_link, *rsl_link; |
| 26 | |
| 27 | line = malloc(sizeof(*line)); |
| 28 | if (!line) |
| 29 | return -ENOMEM; |
| 30 | memset(line, 0, sizeof(*line)); |
| 31 | |
| 32 | /* create E1 timeslots for signalling and TRAU frames */ |
| 33 | e1inp_ts_config(&line->ts[1-1], line, E1INP_TS_TYPE_SIGN); |
| 34 | e1inp_ts_config(&line->ts[2-1], line, E1INP_TS_TYPE_TRAU); |
| 35 | e1inp_ts_config(&line->ts[3-1], line, E1INP_TS_TYPE_TRAU); |
| 36 | |
| 37 | /* create signalling links for TS1 */ |
| 38 | sign_ts = &line->ts[1-1]; |
| 39 | oml_link = e1inp_sign_link_create(sign_ts, E1INP_SIGN_OML, |
| 40 | bts->c0, TEI_OML, SAPI_OML); |
| 41 | rsl_link = e1inp_sign_link_create(sign_ts, E1INP_SIGN_RSL, |
| 42 | bts->c0, TEI_RSL, SAPI_RSL); |
| 43 | |
| 44 | /* create back-links from bts/trx */ |
| 45 | bts->oml_link = oml_link; |
| 46 | bts->c0->rsl_link = rsl_link; |
| 47 | |
| 48 | /* enable subchannel demuxer on TS2 */ |
| 49 | subch_demux_activate(&line->ts[2-1].trau.demux, 1); |
| 50 | subch_demux_activate(&line->ts[2-1].trau.demux, 2); |
| 51 | subch_demux_activate(&line->ts[2-1].trau.demux, 3); |
| 52 | |
| 53 | /* enable subchannel demuxer on TS3 */ |
| 54 | subch_demux_activate(&line->ts[3-1].trau.demux, 0); |
| 55 | subch_demux_activate(&line->ts[3-1].trau.demux, 1); |
| 56 | subch_demux_activate(&line->ts[3-1].trau.demux, 2); |
| 57 | subch_demux_activate(&line->ts[3-1].trau.demux, 3); |
| 58 | |
| 59 | #ifdef HAVE_TRX1 |
| 60 | /* create E1 timeslots for TRAU frames of TRX1 */ |
| 61 | e1inp_ts_config(&line->ts[4-1], line, E1INP_TS_TYPE_TRAU); |
| 62 | e1inp_ts_config(&line->ts[5-1], line, E1INP_TS_TYPE_TRAU); |
| 63 | |
| 64 | /* create RSL signalling link for TRX1 */ |
| 65 | sign_ts = &line->ts[1-1]; |
| 66 | rsl_link = e1inp_sign_link_create(sign_ts, E1INP_SIGN_RSL, |
| 67 | &bts->trx[1], TEI_RSL+1, SAPI_RSL); |
| 68 | /* create back-links from trx */ |
| 69 | bts->trx[1].rsl_link = rsl_link; |
| 70 | #endif |
| 71 | |
| 72 | return mi_setup(cardnr, line, release_l2); |
| 73 | } |
| 74 | |
| 75 | /* configure pseudo E1 line in ip.access style and connect to BTS */ |
| 76 | int ia_config_connect(struct gsm_bts *bts, struct sockaddr_in *sin) |
| 77 | { |
| 78 | struct e1inp_line *line; |
| 79 | struct e1inp_ts *sign_ts, *rsl_ts; |
| 80 | struct e1inp_sign_link *oml_link, *rsl_link; |
| 81 | |
| 82 | line = malloc(sizeof(*line)); |
| 83 | if (!line) |
| 84 | return NULL; |
| 85 | memset(line, 0, sizeof(*line)); |
| 86 | |
| 87 | /* create E1 timeslots for signalling and TRAU frames */ |
| 88 | e1inp_ts_config(&line->ts[1-1], line, E1INP_TS_TYPE_SIGN); |
| 89 | e1inp_ts_config(&line->ts[2-1], line, E1INP_TS_TYPE_SIGN); |
| 90 | |
| 91 | /* create signalling links for TS1 */ |
| 92 | sign_ts = &line->ts[1-1]; |
| 93 | rsl_ts = &line->ts[2-1]; |
| 94 | oml_link = e1inp_sign_link_create(sign_ts, E1INP_SIGN_OML, |
| 95 | bts->c0, 0, 0xff); |
| 96 | rsl_link = e1inp_sign_link_create(rsl_ts, E1INP_SIGN_RSL, |
| 97 | bts->c0, 0, 0); |
| 98 | |
| 99 | /* create back-links from bts/trx */ |
| 100 | bts->oml_link = oml_link; |
| 101 | bts->c0->rsl_link = rsl_link; |
| 102 | |
| 103 | /* default port at BTS for incoming connections is 3006 */ |
| 104 | if (sin->sin_port == 0) |
| 105 | sin->sin_port = htons(3006); |
| 106 | |
| 107 | return ipaccess_connect(line, sin); |
| 108 | } |