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> |
Harald Welte | a837977 | 2009-06-20 22:36:41 +0200 | [diff] [blame] | 11 | #include <openbsc/talloc.h> |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 12 | |
| 13 | #define SAPI_L2ML 0 |
| 14 | #define SAPI_OML 62 |
| 15 | #define SAPI_RSL 0 /* 63 ? */ |
| 16 | |
| 17 | #define TEI_L2ML 127 |
| 18 | #define TEI_OML 25 |
| 19 | #define TEI_RSL 1 |
| 20 | |
| 21 | /* do some compiled-in configuration for our BTS/E1 setup */ |
| 22 | int e1_config(struct gsm_bts *bts, int cardnr, int release_l2) |
| 23 | { |
| 24 | struct e1inp_line *line; |
| 25 | struct e1inp_ts *sign_ts; |
| 26 | struct e1inp_sign_link *oml_link, *rsl_link; |
Harald Welte | 25b70c5 | 2009-07-29 16:42:16 +0200 | [diff] [blame] | 27 | struct gsm_bts_trx *trx = bts->c0; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 28 | |
Harald Welte | 857e00d | 2009-06-26 20:25:23 +0200 | [diff] [blame] | 29 | line = talloc_zero(tall_bsc_ctx, struct e1inp_line); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 30 | if (!line) |
| 31 | return -ENOMEM; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 32 | |
| 33 | /* create E1 timeslots for signalling and TRAU frames */ |
| 34 | e1inp_ts_config(&line->ts[1-1], line, E1INP_TS_TYPE_SIGN); |
| 35 | e1inp_ts_config(&line->ts[2-1], line, E1INP_TS_TYPE_TRAU); |
| 36 | e1inp_ts_config(&line->ts[3-1], line, E1INP_TS_TYPE_TRAU); |
| 37 | |
| 38 | /* create signalling links for TS1 */ |
| 39 | sign_ts = &line->ts[1-1]; |
| 40 | oml_link = e1inp_sign_link_create(sign_ts, E1INP_SIGN_OML, |
Harald Welte | 25b70c5 | 2009-07-29 16:42:16 +0200 | [diff] [blame] | 41 | trx, TEI_OML, SAPI_OML); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 42 | rsl_link = e1inp_sign_link_create(sign_ts, E1INP_SIGN_RSL, |
Harald Welte | 25b70c5 | 2009-07-29 16:42:16 +0200 | [diff] [blame] | 43 | trx, TEI_RSL, SAPI_RSL); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 44 | |
| 45 | /* create back-links from bts/trx */ |
| 46 | bts->oml_link = oml_link; |
Harald Welte | 25b70c5 | 2009-07-29 16:42:16 +0200 | [diff] [blame] | 47 | trx->rsl_link = rsl_link; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 48 | |
| 49 | /* enable subchannel demuxer on TS2 */ |
| 50 | subch_demux_activate(&line->ts[2-1].trau.demux, 1); |
| 51 | subch_demux_activate(&line->ts[2-1].trau.demux, 2); |
| 52 | subch_demux_activate(&line->ts[2-1].trau.demux, 3); |
| 53 | |
| 54 | /* enable subchannel demuxer on TS3 */ |
| 55 | subch_demux_activate(&line->ts[3-1].trau.demux, 0); |
| 56 | subch_demux_activate(&line->ts[3-1].trau.demux, 1); |
| 57 | subch_demux_activate(&line->ts[3-1].trau.demux, 2); |
| 58 | subch_demux_activate(&line->ts[3-1].trau.demux, 3); |
| 59 | |
Harald Welte | 25b70c5 | 2009-07-29 16:42:16 +0200 | [diff] [blame] | 60 | trx = gsm_bts_trx_num(bts, 1); |
| 61 | if (trx) { |
| 62 | /* create E1 timeslots for TRAU frames of TRX1 */ |
| 63 | e1inp_ts_config(&line->ts[4-1], line, E1INP_TS_TYPE_TRAU); |
| 64 | e1inp_ts_config(&line->ts[5-1], line, E1INP_TS_TYPE_TRAU); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 65 | |
Harald Welte | 25b70c5 | 2009-07-29 16:42:16 +0200 | [diff] [blame] | 66 | /* create RSL signalling link for TRX1 */ |
| 67 | sign_ts = &line->ts[1-1]; |
| 68 | rsl_link = e1inp_sign_link_create(sign_ts, E1INP_SIGN_RSL, |
| 69 | trx, TEI_RSL+1, SAPI_RSL); |
| 70 | /* create back-links from trx */ |
| 71 | trx->rsl_link = rsl_link; |
| 72 | |
| 73 | /* enable subchannel demuxer on TS2 */ |
| 74 | subch_demux_activate(&line->ts[4-1].trau.demux, 0); |
| 75 | subch_demux_activate(&line->ts[4-1].trau.demux, 1); |
| 76 | subch_demux_activate(&line->ts[4-1].trau.demux, 2); |
| 77 | subch_demux_activate(&line->ts[4-1].trau.demux, 3); |
| 78 | |
| 79 | /* enable subchannel demuxer on TS3 */ |
| 80 | subch_demux_activate(&line->ts[5-1].trau.demux, 0); |
| 81 | subch_demux_activate(&line->ts[5-1].trau.demux, 1); |
| 82 | subch_demux_activate(&line->ts[5-1].trau.demux, 2); |
| 83 | subch_demux_activate(&line->ts[5-1].trau.demux, 3); |
| 84 | } |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 85 | |
| 86 | return mi_setup(cardnr, line, release_l2); |
| 87 | } |
| 88 | |
| 89 | /* configure pseudo E1 line in ip.access style and connect to BTS */ |
| 90 | int ia_config_connect(struct gsm_bts *bts, struct sockaddr_in *sin) |
| 91 | { |
| 92 | struct e1inp_line *line; |
| 93 | struct e1inp_ts *sign_ts, *rsl_ts; |
| 94 | struct e1inp_sign_link *oml_link, *rsl_link; |
| 95 | |
Harald Welte | 857e00d | 2009-06-26 20:25:23 +0200 | [diff] [blame] | 96 | line = talloc_zero(tall_bsc_ctx, struct e1inp_line); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 97 | if (!line) |
Harald Welte | a837977 | 2009-06-20 22:36:41 +0200 | [diff] [blame] | 98 | return -ENOMEM; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 99 | |
| 100 | /* create E1 timeslots for signalling and TRAU frames */ |
| 101 | e1inp_ts_config(&line->ts[1-1], line, E1INP_TS_TYPE_SIGN); |
| 102 | e1inp_ts_config(&line->ts[2-1], line, E1INP_TS_TYPE_SIGN); |
| 103 | |
| 104 | /* create signalling links for TS1 */ |
| 105 | sign_ts = &line->ts[1-1]; |
| 106 | rsl_ts = &line->ts[2-1]; |
| 107 | oml_link = e1inp_sign_link_create(sign_ts, E1INP_SIGN_OML, |
| 108 | bts->c0, 0, 0xff); |
| 109 | rsl_link = e1inp_sign_link_create(rsl_ts, E1INP_SIGN_RSL, |
| 110 | bts->c0, 0, 0); |
| 111 | |
| 112 | /* create back-links from bts/trx */ |
| 113 | bts->oml_link = oml_link; |
| 114 | bts->c0->rsl_link = rsl_link; |
| 115 | |
| 116 | /* default port at BTS for incoming connections is 3006 */ |
| 117 | if (sin->sin_port == 0) |
| 118 | sin->sin_port = htons(3006); |
| 119 | |
| 120 | return ipaccess_connect(line, sin); |
| 121 | } |