diff options
Diffstat (limited to 'openbsc/src/gsm_04_08_utils.c')
| -rw-r--r-- | openbsc/src/gsm_04_08_utils.c | 230 |
1 files changed, 43 insertions, 187 deletions
diff --git a/openbsc/src/gsm_04_08_utils.c b/openbsc/src/gsm_04_08_utils.c index 9156a3909..68f34f409 100644 --- a/openbsc/src/gsm_04_08_utils.c +++ b/openbsc/src/gsm_04_08_utils.c @@ -28,7 +28,8 @@ #include <errno.h> #include <netinet/in.h> -#include <openbsc/msgb.h> +#include <osmocore/msgb.h> +#include <osmocore/gsm48.h> #include <openbsc/debug.h> #include <openbsc/gsm_04_08.h> #include <openbsc/transaction.h> @@ -42,75 +43,6 @@ * or should OpenBSC always act as RTP relay/proxy in between (0) ? */ int ipacc_rtp_direct = 1; - -const char *gsm0408_cc_msg_names[] = { - "unknown 0x00", - "ALERTING", - "CALL_PROC", - "PROGRESS", - "ESTAB", - "SETUP", - "ESTAB_CONF", - "CONNECT", - "CALL_CONF", - "START_CC", - "unknown 0x0a", - "RECALL", - "unknown 0x0c", - "unknown 0x0d", - "EMERG_SETUP", - "CONNECT_ACK", - "USER_INFO", - "unknown 0x11", - "unknown 0x12", - "MODIFY_REJECT", - "unknown 0x14", - "unknown 0x15", - "unknown 0x16", - "MODIFY", - "HOLD", - "HOLD_ACK", - "HOLD_REJ", - "unknown 0x1b", - "RETR", - "RETR_ACK", - "RETR_REJ", - "MODIFY_COMPL", - "unknown 0x20", - "unknown 0x21", - "unknown 0x22", - "unknown 0x23", - "unknown 0x24", - "DISCONNECT", - "unknown 0x26", - "unknown 0x27", - "unknown 0x28", - "unknown 0x29", - "RELEASE_COMPL", - "unknown 0x2b", - "unknown 0x2c", - "RELEASE", - "unknown 0x2e", - "unknown 0x2f", - "unknown 0x30", - "STOP_DTMF", - "STOP_DTMF_ACK", - "unknown 0x33", - "STATUS_ENQ", - "START_DTMF", - "START_DTMF_ACK", - "START_DTMF_REJ", - "unknown 0x38", - "CONG_CTRL", - "FACILITY", - "unknown 0x3b", - "STATUS", - "unknown 0x3c", - "NOTIFY", - "unknown 0x3f", -}; - - struct msgb *gsm48_msgb_alloc(void) { return msgb_alloc_headroom(GSM48_ALLOC_SIZE, GSM48_ALLOC_HEADROOM, @@ -136,7 +68,7 @@ int gsm48_sendmsg(struct msgb *msg, struct gsm_trans *trans) "Sending '%s' to MS.\n", msg->trx->bts->nr, msg->trx->nr, msg->lchan->ts->nr, gh->proto_discr & 0xf0, - gsm0408_cc_msg_names[gh->msg_type & 0x3f]); + gsm48_cc_msg_names[gh->msg_type & 0x3f]); else DEBUGP(DCC, "(bts %d trx %d ts %d pd %02x) " "Sending 0x%02x to MS.\n", msg->trx->bts->nr, @@ -149,94 +81,6 @@ int gsm48_sendmsg(struct msgb *msg, struct gsm_trans *trans) return rsl_data_request(msg, 0); } -static void to_bcd(u_int8_t *bcd, u_int16_t val) -{ - bcd[2] = val % 10; - val = val / 10; - bcd[1] = val % 10; - val = val / 10; - bcd[0] = val % 10; - val = val / 10; -} - -static char bcd2char(u_int8_t bcd) -{ - if (bcd < 0xa) - return '0' + bcd; - else - return 'A' + (bcd - 0xa); -} - -/* only works for numbers in ascci */ -static u_int8_t char2bcd(char c) -{ - return c - 0x30; -} - - -void gsm0408_generate_lai(struct gsm48_loc_area_id *lai48, u_int16_t mcc, - u_int16_t mnc, u_int16_t lac) -{ - u_int8_t bcd[3]; - - to_bcd(bcd, mcc); - lai48->digits[0] = bcd[0] | (bcd[1] << 4); - lai48->digits[1] = bcd[2]; - - to_bcd(bcd, mnc); - /* FIXME: do we need three-digit MNC? See Table 10.5.3 */ -#if 0 - lai48->digits[1] |= bcd[2] << 4; - lai48->digits[2] = bcd[0] | (bcd[1] << 4); -#else - lai48->digits[1] |= 0xf << 4; - lai48->digits[2] = bcd[1] | (bcd[2] << 4); -#endif - - lai48->lac = htons(lac); -} - -int gsm48_generate_mid_from_tmsi(u_int8_t *buf, u_int32_t tmsi) -{ - u_int32_t *tptr = (u_int32_t *) &buf[3]; - - buf[0] = GSM48_IE_MOBILE_ID; - buf[1] = GSM48_TMSI_LEN; - buf[2] = 0xf0 | GSM_MI_TYPE_TMSI; - *tptr = htonl(tmsi); - - return 7; -} - -int gsm48_generate_mid_from_imsi(u_int8_t *buf, const char *imsi) -{ - unsigned int length = strlen(imsi), i, off = 0; - u_int8_t odd = (length & 0x1) == 1; - - buf[0] = GSM48_IE_MOBILE_ID; - buf[2] = char2bcd(imsi[0]) << 4 | GSM_MI_TYPE_IMSI | (odd << 3); - - /* if the length is even we will fill half of the last octet */ - if (odd) - buf[1] = (length + 1) >> 1; - else - buf[1] = (length + 2) >> 1; - - for (i = 1; i < buf[1]; ++i) { - u_int8_t lower, upper; - - lower = char2bcd(imsi[++off]); - if (!odd && off + 1 == length) - upper = 0x0f; - else - upper = char2bcd(imsi[++off]) & 0x0f; - - buf[2 + i] = (upper << 4) | lower; - } - - return 2 + buf[1]; -} - /* Section 9.1.8 / Table 9.9 */ struct chreq { u_int8_t val; @@ -340,7 +184,7 @@ enum gsm_chan_t get_ctype_by_chreq(struct gsm_bts *bts, u_int8_t ra, int neci) if ((ra & chr->mask) == chr->val) return ctype_by_chreq[chr->type]; } - fprintf(stderr, "Unknown CHANNEL REQUEST RQD 0x%02x\n", ra); + LOGP(DRR, LOGL_ERROR, "Unknown CHANNEL REQUEST RQD 0x%02x\n", ra); return GSM_LCHAN_SDCCH; } @@ -363,7 +207,7 @@ enum gsm_chreq_reason_t get_reason_by_chreq(struct gsm_bts *bts, u_int8_t ra, in if ((ra & chr->mask) == chr->val) return reason_by_chreq[chr->type]; } - fprintf(stderr, "Unknown CHANNEL REQUEST REASON 0x%02x\n", ra); + LOGP(DRR, LOGL_ERROR, "Unknown CHANNEL REQUEST REASON 0x%02x\n", ra); return GSM_CHREQ_REASON_OTHER; } @@ -475,7 +319,7 @@ int gsm48_handle_paging_resp(struct msgb *msg, struct gsm_subscriber *subscr) if (!msg->lchan->subscr) { msg->lchan->subscr = subscr; } else if (msg->lchan->subscr != subscr) { - DEBUGP(DRR, "<- Channel already owned by someone else?\n"); + LOGP(DRR, LOGL_ERROR, "<- Channel already owned by someone else?\n"); subscr_put(subscr); return -EINVAL; } else { @@ -490,7 +334,7 @@ int gsm48_handle_paging_resp(struct msgb *msg, struct gsm_subscriber *subscr) bts->network->stats.paging.completed++; - dispatch_signal(SS_PAGING, S_PAGING_COMPLETED, &sig_data); + dispatch_signal(SS_PAGING, S_PAGING_SUCCEEDED, &sig_data); /* Stop paging on the bts we received the paging response */ paging_request_stop(msg->trx->bts, subscr, msg->lchan); @@ -596,7 +440,8 @@ int gsm48_send_rr_ass_cmd(struct gsm_lchan *dest_lchan, struct gsm_lchan *lchan, /* in case of multi rate we need to attach a config */ if (lchan->tch_mode == GSM48_CMODE_SPEECH_AMR) { if (lchan->mr_conf.ver == 0) { - DEBUGP(DRR, "BUG: Using multirate codec without multirate config.\n"); + LOGP(DRR, LOGL_ERROR, "BUG: Using multirate codec " + "without multirate config.\n"); } else { u_int8_t *data = msgb_put(msg, 4); data[0] = GSM48_IE_MUL_RATE_CFG; @@ -636,7 +481,8 @@ int gsm48_tx_chan_mode_modify(struct gsm_lchan *lchan, u_int8_t mode) /* in case of multi rate we need to attach a config */ if (lchan->tch_mode == GSM48_CMODE_SPEECH_AMR) { if (lchan->mr_conf.ver == 0) { - DEBUGP(DRR, "BUG: Using multirate codec without multirate config.\n"); + LOGP(DRR, LOGL_ERROR, "BUG: Using multirate codec " + "without multirate config.\n"); } else { u_int8_t *data = msgb_put(msg, 4); data[0] = GSM48_IE_MUL_RATE_CFG; @@ -669,7 +515,7 @@ int gsm48_rx_rr_modif_ack(struct msgb *msg) DEBUGP(DRR, "CHANNEL MODE MODIFY ACK\n"); if (mod->mode != msg->lchan->tch_mode) { - DEBUGP(DRR, "CHANNEL MODE change failed. Wanted: %d Got: %d\n", + LOGP(DRR, LOGL_ERROR, "CHANNEL MODE change failed. Wanted: %d Got: %d\n", msg->lchan->tch_mode, mod->mode); return -1; } @@ -710,6 +556,7 @@ int gsm48_parse_meas_rep(struct gsm_meas_rep *rep, struct msgb *msg) u_int8_t *data = gh->data; struct gsm_bts *bts = msg->lchan->ts->trx->bts; struct bitvec *nbv = &bts->si_common.neigh_list; + struct gsm_meas_rep_cell *mrc; if (gh->msg_type != GSM48_MT_RR_MEAS_REP) return -EINVAL; @@ -731,42 +578,51 @@ int gsm48_parse_meas_rep(struct gsm_meas_rep *rep, struct msgb *msg) return 0; /* an encoding nightmare in perfection */ - - rep->cell[0].rxlev = data[3] & 0x3f; - rep->cell[0].arfcn = bitvec_get_nth_set_bit(nbv, data[4] >> 2); - rep->cell[0].bsic = ((data[4] & 0x07) << 3) | (data[5] >> 5); + mrc = &rep->cell[0]; + mrc->rxlev = data[3] & 0x3f; + mrc->neigh_idx = data[4] >> 3; + mrc->arfcn = bitvec_get_nth_set_bit(nbv, mrc->neigh_idx + 1); + mrc->bsic = ((data[4] & 0x07) << 3) | (data[5] >> 5); if (rep->num_cell < 2) return 0; - rep->cell[1].rxlev = ((data[5] & 0x1f) << 1) | (data[6] >> 7); - rep->cell[1].arfcn = bitvec_get_nth_set_bit(nbv, (data[6] >> 2) & 0x1f); - rep->cell[1].bsic = ((data[6] & 0x03) << 4) | (data[7] >> 4); + mrc = &rep->cell[1]; + mrc->rxlev = ((data[5] & 0x1f) << 1) | (data[6] >> 7); + mrc->neigh_idx = (data[6] >> 2) & 0x1f; + mrc->arfcn = bitvec_get_nth_set_bit(nbv, mrc->neigh_idx + 1); + mrc->bsic = ((data[6] & 0x03) << 4) | (data[7] >> 4); if (rep->num_cell < 3) return 0; - rep->cell[2].rxlev = ((data[7] & 0x0f) << 2) | (data[8] >> 6); - rep->cell[2].arfcn = bitvec_get_nth_set_bit(nbv, (data[8] >> 1) & 0x1f); - rep->cell[2].bsic = ((data[8] & 0x01) << 6) | (data[9] >> 3); + mrc = &rep->cell[2]; + mrc->rxlev = ((data[7] & 0x0f) << 2) | (data[8] >> 6); + mrc->neigh_idx = (data[8] >> 1) & 0x1f; + mrc->arfcn = bitvec_get_nth_set_bit(nbv, mrc->neigh_idx + 1); + mrc->bsic = ((data[8] & 0x01) << 5) | (data[9] >> 3); if (rep->num_cell < 4) return 0; - rep->cell[3].rxlev = ((data[9] & 0x07) << 3) | (data[10] >> 5); - rep->cell[3].arfcn = bitvec_get_nth_set_bit(nbv, data[10] & 0x1f); - rep->cell[3].bsic = data[11] >> 2; + mrc = &rep->cell[3]; + mrc->rxlev = ((data[9] & 0x07) << 3) | (data[10] >> 5); + mrc->neigh_idx = data[10] & 0x1f; + mrc->arfcn = bitvec_get_nth_set_bit(nbv, mrc->neigh_idx + 1); + mrc->bsic = data[11] >> 2; if (rep->num_cell < 5) return 0; - rep->cell[4].rxlev = ((data[11] & 0x03) << 4) | (data[12] >> 4); - rep->cell[4].arfcn = bitvec_get_nth_set_bit(nbv, - ((data[12] & 0xf) << 1) | (data[13] >> 7)); - rep->cell[4].bsic = (data[13] >> 1) & 0x3f; + mrc = &rep->cell[4]; + mrc->rxlev = ((data[11] & 0x03) << 4) | (data[12] >> 4); + mrc->neigh_idx = ((data[12] & 0xf) << 1) | (data[13] >> 7); + mrc->arfcn = bitvec_get_nth_set_bit(nbv, mrc->neigh_idx + 1); + mrc->bsic = (data[13] >> 1) & 0x3f; if (rep->num_cell < 6) return 0; - rep->cell[5].rxlev = ((data[13] & 0x01) << 5) | (data[14] >> 3); - rep->cell[5].arfcn = bitvec_get_nth_set_bit(nbv, - ((data[14] & 0x07) << 2) | (data[15] >> 6)); - rep->cell[5].bsic = data[15] & 0x3f; + mrc = &rep->cell[5]; + mrc->rxlev = ((data[13] & 0x01) << 5) | (data[14] >> 3); + mrc->neigh_idx = ((data[14] & 0x07) << 2) | (data[15] >> 6); + mrc->arfcn = bitvec_get_nth_set_bit(nbv, mrc->neigh_idx + 1); + mrc->bsic = data[15] & 0x3f; return 0; } |