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libosmocore/src/gsm/rsl.c

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/*
* (C) 2008-2010 by Harald Welte <laforge@gnumonks.org>
*
* All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#include <stdint.h>
#include <stdio.h>
#include <errno.h>
#include <osmocom/gsm/tlv.h>
#include <osmocom/gsm/rsl.h>
/*! \addtogroup rsl
* @{
* GSM Radio Signalling Link messages on the A-bis interface.
* 3GPP TS 08.58 version 8.6.0 Release 1999 / ETSI TS 100 596 V8.6.0.
*
* \file rsl.c */
/*! Size for RSL \ref msgb_alloc */
#define RSL_ALLOC_SIZE 200
/*! Headroom size for RSL \ref msgb_alloc */
#define RSL_ALLOC_HEADROOM 56
/*! Initialize a RSL RLL header
* \param[out] dh Caller-allocated RSL RLL header
* \param[in] msg_type Message Type */
void rsl_init_rll_hdr(struct abis_rsl_rll_hdr *dh, uint8_t msg_type)
{
dh->c.msg_discr = ABIS_RSL_MDISC_RLL;
dh->c.msg_type = msg_type;
dh->ie_chan = RSL_IE_CHAN_NR;
dh->ie_link_id = RSL_IE_LINK_IDENT;
}
/*! Initialize a RSL Common Channel header
* \param[out] ch Caller-allocated RSL Common Channel Header
* \param[in] msg_type Message Type */
void rsl_init_cchan_hdr(struct abis_rsl_cchan_hdr *ch, uint8_t msg_type)
{
ch->c.msg_discr = ABIS_RSL_MDISC_COM_CHAN;
ch->c.msg_type = msg_type;
ch->ie_chan = RSL_IE_CHAN_NR;
}
/* TLV parser definition for RSL */
const struct tlv_definition rsl_att_tlvdef = {
.def = {
[RSL_IE_CHAN_NR] = { TLV_TYPE_TV },
[RSL_IE_LINK_IDENT] = { TLV_TYPE_TV },
[RSL_IE_ACT_TYPE] = { TLV_TYPE_TV },
[RSL_IE_BS_POWER] = { TLV_TYPE_TV },
[RSL_IE_CHAN_IDENT] = { TLV_TYPE_TLV },
[RSL_IE_CHAN_MODE] = { TLV_TYPE_TLV },
[RSL_IE_ENCR_INFO] = { TLV_TYPE_TLV },
[RSL_IE_FRAME_NUMBER] = { TLV_TYPE_FIXED, 2 },
[RSL_IE_HANDO_REF] = { TLV_TYPE_TV },
[RSL_IE_L1_INFO] = { TLV_TYPE_FIXED, 2 },
[RSL_IE_L3_INFO] = { TLV_TYPE_TL16V },
[RSL_IE_MS_IDENTITY] = { TLV_TYPE_TLV },
[RSL_IE_MS_POWER] = { TLV_TYPE_TV },
[RSL_IE_PAGING_GROUP] = { TLV_TYPE_TV },
[RSL_IE_PAGING_LOAD] = { TLV_TYPE_FIXED, 2 },
[RSL_IE_PYHS_CONTEXT] = { TLV_TYPE_TLV },
[RSL_IE_ACCESS_DELAY] = { TLV_TYPE_TV },
[RSL_IE_RACH_LOAD] = { TLV_TYPE_TLV },
[RSL_IE_REQ_REFERENCE] = { TLV_TYPE_FIXED, 3 },
[RSL_IE_RELEASE_MODE] = { TLV_TYPE_TV },
[RSL_IE_RESOURCE_INFO] = { TLV_TYPE_TLV },
[RSL_IE_RLM_CAUSE] = { TLV_TYPE_TLV },
[RSL_IE_STARTNG_TIME] = { TLV_TYPE_FIXED, 2 },
[RSL_IE_TIMING_ADVANCE] = { TLV_TYPE_TV },
[RSL_IE_UPLINK_MEAS] = { TLV_TYPE_TLV },
[RSL_IE_CAUSE] = { TLV_TYPE_TLV },
[RSL_IE_MEAS_RES_NR] = { TLV_TYPE_TV },
[RSL_IE_MSG_ID] = { TLV_TYPE_TV },
[RSL_IE_SYSINFO_TYPE] = { TLV_TYPE_TV },
[RSL_IE_MS_POWER_PARAM] = { TLV_TYPE_TLV },
[RSL_IE_BS_POWER_PARAM] = { TLV_TYPE_TLV },
[RSL_IE_PREPROC_PARAM] = { TLV_TYPE_TLV },
[RSL_IE_PREPROC_MEAS] = { TLV_TYPE_TLV },
[RSL_IE_IMM_ASS_INFO] = { TLV_TYPE_TLV },
[RSL_IE_SMSCB_INFO] = { TLV_TYPE_FIXED, 23 },
[RSL_IE_MS_TIMING_OFFSET] = { TLV_TYPE_TV },
[RSL_IE_ERR_MSG] = { TLV_TYPE_TLV },
[RSL_IE_FULL_BCCH_INFO] = { TLV_TYPE_TLV },
[RSL_IE_CHAN_NEEDED] = { TLV_TYPE_TV },
[RSL_IE_CB_CMD_TYPE] = { TLV_TYPE_TV },
[RSL_IE_SMSCB_MSG] = { TLV_TYPE_TLV },
[RSL_IE_FULL_IMM_ASS_INFO] = { TLV_TYPE_TLV },
[RSL_IE_SACCH_INFO] = { TLV_TYPE_TLV },
[RSL_IE_CBCH_LOAD_INFO] = { TLV_TYPE_TV },
[RSL_IE_SMSCB_CHAN_INDICATOR] = { TLV_TYPE_TV },
[RSL_IE_GROUP_CALL_REF] = { TLV_TYPE_TLV },
[RSL_IE_CHAN_DESC] = { TLV_TYPE_TLV },
[RSL_IE_NCH_DRX_INFO] = { TLV_TYPE_TLV },
[RSL_IE_CMD_INDICATOR] = { TLV_TYPE_TLV },
[RSL_IE_EMLPP_PRIO] = { TLV_TYPE_TV },
[RSL_IE_UIC] = { TLV_TYPE_TLV },
[RSL_IE_MAIN_CHAN_REF] = { TLV_TYPE_TV },
[RSL_IE_MR_CONFIG] = { TLV_TYPE_TLV },
[RSL_IE_MR_CONTROL] = { TLV_TYPE_TV },
[RSL_IE_SUP_CODEC_TYPES] = { TLV_TYPE_TLV },
[RSL_IE_CODEC_CONFIG] = { TLV_TYPE_TLV },
[RSL_IE_RTD] = { TLV_TYPE_TV },
[RSL_IE_TFO_STATUS] = { TLV_TYPE_TV },
[RSL_IE_LLP_APDU] = { TLV_TYPE_TLV },
[RSL_IE_SIEMENS_MRPCI] = { TLV_TYPE_TV },
[RSL_IE_IPAC_PROXY_UDP] = { TLV_TYPE_FIXED, 2 },
[RSL_IE_IPAC_BSCMPL_TOUT] = { TLV_TYPE_TV },
[RSL_IE_IPAC_REMOTE_IP] = { TLV_TYPE_FIXED, 4 },
[RSL_IE_IPAC_REMOTE_PORT] = { TLV_TYPE_FIXED, 2 },
[RSL_IE_IPAC_RTP_PAYLOAD] = { TLV_TYPE_TV },
[RSL_IE_IPAC_LOCAL_PORT] = { TLV_TYPE_FIXED, 2 },
[RSL_IE_IPAC_SPEECH_MODE] = { TLV_TYPE_TV },
[RSL_IE_IPAC_LOCAL_IP] = { TLV_TYPE_FIXED, 4 },
[RSL_IE_IPAC_CONN_ID] = { TLV_TYPE_FIXED, 2 },
[RSL_IE_IPAC_RTP_CSD_FMT] = { TLV_TYPE_TV },
[RSL_IE_IPAC_RTP_JIT_BUF] = { TLV_TYPE_FIXED, 2 },
[RSL_IE_IPAC_RTP_COMPR] = { TLV_TYPE_TV },
[RSL_IE_IPAC_RTP_PAYLOAD2] = { TLV_TYPE_TV },
[RSL_IE_IPAC_RTP_MPLEX] = { TLV_TYPE_FIXED, 8 },
[RSL_IE_IPAC_RTP_MPLEX_ID] = { TLV_TYPE_TV },
},
};
/*! Encode channel number as per Section 9.3.1
* \param[in] Channel Type (RSL_CHAN_...)
* \param[in] subch Sub-Channel within Channel
* \param[in] timeslot Air interface timeslot
* \returns RSL Channel Number (TS 08.58 9.3.1) */
uint8_t rsl_enc_chan_nr(uint8_t type, uint8_t subch, uint8_t timeslot)
{
uint8_t ret;
ret = (timeslot & 0x07) | type;
switch (type) {
case RSL_CHAN_Lm_ACCHs:
subch &= 0x01;
break;
case RSL_CHAN_SDCCH4_ACCH:
subch &= 0x03;
break;
case RSL_CHAN_SDCCH8_ACCH:
subch &= 0x07;
break;
default:
/* no subchannels allowed */
subch = 0x00;
break;
}
ret |= (subch << 3);
return ret;
}
/*! Decode RSL channel number
* \param[in] chan_nr Channel Number
* \param[out] type Channel Type
* \param[out] subch Sub-channel Number
* \param[out] timeslot Timeslot
*/
int rsl_dec_chan_nr(uint8_t chan_nr, uint8_t *type, uint8_t *subch, uint8_t *timeslot)
{
*timeslot = chan_nr & 0x7;
if ((chan_nr & 0xf8) == RSL_CHAN_Bm_ACCHs) {
*type = RSL_CHAN_Bm_ACCHs;
*subch = 0;
} else if ((chan_nr & 0xf0) == RSL_CHAN_Lm_ACCHs) {
*type = RSL_CHAN_Lm_ACCHs;
*subch = (chan_nr >> 3) & 0x1;
} else if ((chan_nr & 0xe0) == RSL_CHAN_SDCCH4_ACCH) {
*type = RSL_CHAN_SDCCH4_ACCH;
*subch = (chan_nr >> 3) & 0x3;
} else if ((chan_nr & 0xc0) == RSL_CHAN_SDCCH8_ACCH) {
*type = RSL_CHAN_SDCCH8_ACCH;
*subch = (chan_nr >> 3) & 0x7;
} else if ((chan_nr & 0xf8) == RSL_CHAN_BCCH) {
*type = RSL_CHAN_BCCH;
*subch = 0;
} else if ((chan_nr & 0xf8) == RSL_CHAN_RACH) {
*type = RSL_CHAN_RACH;
*subch = 0;
} else if ((chan_nr & 0xf8) == RSL_CHAN_PCH_AGCH) {
*type = RSL_CHAN_PCH_AGCH;
*subch = 0;
} else if ((chan_nr & 0xf8) == RSL_CHAN_OSMO_PDCH) {
*type = RSL_CHAN_OSMO_PDCH;
*subch = 0;
} else
return -EINVAL;
return 0;
}
/*! Get human-readable string for RSL channel number */
const char *rsl_chan_nr_str(uint8_t chan_nr)
{
static char str[20];
int ts = chan_nr & 7;
uint8_t cbits = chan_nr >> 3;
if (cbits == 0x01)
sprintf(str, "TCH/F on TS%d", ts);
else if ((cbits & 0x1e) == 0x02)
sprintf(str, "TCH/H(%u) on TS%d", cbits & 0x01, ts);
else if ((cbits & 0x1c) == 0x04)
sprintf(str, "SDCCH/4(%u) on TS%d", cbits & 0x03, ts);
else if ((cbits & 0x18) == 0x08)
sprintf(str, "SDCCH/8(%u) on TS%d", cbits & 0x07, ts);
else if (cbits == 0x10)
sprintf(str, "BCCH on TS%d", ts);
else if (cbits == 0x11)
sprintf(str, "RACH on TS%d", ts);
else if (cbits == 0x12)
sprintf(str, "PCH/AGCH on TS%d", ts);
else
sprintf(str, "UNKNOWN on TS%d", ts);
return str;
}
static const struct value_string rsl_err_vals[] = {
{ RSL_ERR_RADIO_IF_FAIL, "Radio Interface Failure" },
{ RSL_ERR_RADIO_LINK_FAIL, "Radio Link Failure" },
{ RSL_ERR_HANDOVER_ACC_FAIL, "Handover Access Failure" },
{ RSL_ERR_TALKER_ACC_FAIL, "Talker Access Failure" },
{ RSL_ERR_OM_INTERVENTION, "O&M Intervention" },
{ RSL_ERR_NORMAL_UNSPEC, "Normal event, unspecified" },
{ RSL_ERR_T_MSRFPCI_EXP, "Siemens: T_MSRFPCI Expired" },
{ RSL_ERR_EQUIPMENT_FAIL, "Equipment Failure" },
{ RSL_ERR_RR_UNAVAIL, "Radio Resource not available" },
{ RSL_ERR_TERR_CH_FAIL, "Terrestrial Channel Failure" },
{ RSL_ERR_CCCH_OVERLOAD, "CCCH Overload" },
{ RSL_ERR_ACCH_OVERLOAD, "ACCH Overload" },
{ RSL_ERR_PROCESSOR_OVERLOAD, "Processor Overload" },
{ RSL_ERR_RES_UNAVAIL, "Resource not available, unspecified" },
{ RSL_ERR_TRANSC_UNAVAIL, "Transcoding not available" },
{ RSL_ERR_SERV_OPT_UNAVAIL, "Service or Option not available" },
{ RSL_ERR_ENCR_UNIMPL, "Encryption algorithm not implemented" },
{ RSL_ERR_SERV_OPT_UNIMPL, "Service or Option not implemented" },
{ RSL_ERR_RCH_ALR_ACTV_ALLOC, "Radio channel already activated" },
{ RSL_ERR_INVALID_MESSAGE, "Invalid Message, unspecified" },
{ RSL_ERR_MSG_DISCR, "Message Discriminator Error" },
{ RSL_ERR_MSG_TYPE, "Message Type Error" },
{ RSL_ERR_MSG_SEQ, "Message Sequence Error" },
{ RSL_ERR_IE_ERROR, "General IE error" },
{ RSL_ERR_MAND_IE_ERROR, "Mandatory IE error" },
{ RSL_ERR_OPT_IE_ERROR, "Optional IE error" },
{ RSL_ERR_IE_NONEXIST, "IE non-existent" },
{ RSL_ERR_IE_LENGTH, "IE length error" },
{ RSL_ERR_IE_CONTENT, "IE content error" },
{ RSL_ERR_PROTO, "Protocol error, unspecified" },
{ RSL_ERR_INTERWORKING, "Interworking error, unspecified" },
{ 0, NULL }
};
/*! Get human-readable name for RSL Error */
const char *rsl_err_name(uint8_t err)
{
return get_value_string(rsl_err_vals, err);
}
/* Names for Radio Link Layer Management */
static const struct value_string rsl_msgt_names[] = {
{ RSL_MT_DATA_REQ, "DATA_REQ" },
{ RSL_MT_DATA_IND, "DATA_IND" },
{ RSL_MT_ERROR_IND, "ERROR_IND" },
{ RSL_MT_EST_REQ, "EST_REQ" },
{ RSL_MT_EST_CONF, "EST_CONF" },
{ RSL_MT_EST_IND, "EST_IND" },
{ RSL_MT_REL_REQ, "REL_REQ" },
{ RSL_MT_REL_CONF, "REL_CONF" },
{ RSL_MT_REL_IND, "REL_IND" },
{ RSL_MT_UNIT_DATA_REQ, "UNIT_DATA_REQ" },
{ RSL_MT_UNIT_DATA_IND, "UNIT_DATA_IND" },
{ RSL_MT_SUSP_REQ, "SUSP_REQ" },
{ RSL_MT_SUSP_CONF, "SUSP_CONF" },
{ RSL_MT_RES_REQ, "RES_REQ" },
{ RSL_MT_RECON_REQ, "RECON_REQ" },
{ RSL_MT_BCCH_INFO, "BCCH_INFO" },
{ RSL_MT_CCCH_LOAD_IND, "CCCH_LOAD_IND" },
{ RSL_MT_CHAN_RQD, "CHAN_RQD" },
{ RSL_MT_DELETE_IND, "DELETE_IND" },
{ RSL_MT_PAGING_CMD, "PAGING_CMD" },
{ RSL_MT_IMMEDIATE_ASSIGN_CMD, "IMM_ASS_CMD" },
{ RSL_MT_SMS_BC_REQ, "SMS_BC_REQ" },
{ RSL_MT_CHAN_CONF, "CHAN_CONF" },
{ RSL_MT_RF_RES_IND, "RF_RES_IND" },
{ RSL_MT_SACCH_FILL, "SACCH_FILL" },
{ RSL_MT_OVERLOAD, "OVERLOAD" },
{ RSL_MT_ERROR_REPORT, "ERROR_REPORT" },
{ RSL_MT_SMS_BC_CMD, "SMS_BC_CMD" },
{ RSL_MT_CBCH_LOAD_IND, "CBCH_LOAD_IND" },
{ RSL_MT_NOT_CMD, "NOTIFY_CMD" },
{ RSL_MT_CHAN_ACTIV, "CHAN_ACTIV" },
{ RSL_MT_CHAN_ACTIV_ACK, "CHAN_ACTIV_ACK" },
{ RSL_MT_CHAN_ACTIV_NACK, "CHAN_ACTIV_NACK" },
{ RSL_MT_CONN_FAIL, "CONN_FAIL" },
{ RSL_MT_DEACTIVATE_SACCH, "DEACTIVATE_SACCH" },
{ RSL_MT_ENCR_CMD, "ENCR_CMD" },
{ RSL_MT_HANDO_DET, "HANDOVER_DETECT" },
{ RSL_MT_MEAS_RES, "MEAS_RES" },
{ RSL_MT_MODE_MODIFY_REQ, "MODE_MODIFY_REQ" },
{ RSL_MT_MODE_MODIFY_ACK, "MODE_MODIFY_ACK" },
{ RSL_MT_MODE_MODIFY_NACK, "MODE_MODIFY_NACK" },
{ RSL_MT_PHY_CONTEXT_REQ, "PHY_CONTEXT_REQ" },
{ RSL_MT_PHY_CONTEXT_CONF, "PHY_CONTEXT_CONF" },
{ RSL_MT_RF_CHAN_REL, "RF_CHAN_REL" },
{ RSL_MT_MS_POWER_CONTROL, "MS_POWER_CONTROL" },
{ RSL_MT_BS_POWER_CONTROL, "BS_POWER_CONTROL" },
{ RSL_MT_PREPROC_CONFIG, "PREPROC_CONFIG" },
{ RSL_MT_PREPROC_MEAS_RES, "PREPROC_MEAS_RES" },
{ RSL_MT_RF_CHAN_REL_ACK, "RF_CHAN_REL_ACK" },
{ RSL_MT_SACCH_INFO_MODIFY, "SACCH_INFO_MODIFY" },
{ RSL_MT_TALKER_DET, "TALKER_DETECT" },
{ RSL_MT_LISTENER_DET, "LISTENER_DETECT" },
{ RSL_MT_REMOTE_CODEC_CONF_REP, "REM_CODEC_CONF_REP" },
{ RSL_MT_RTD_REP, "RTD_REQ" },
{ RSL_MT_PRE_HANDO_NOTIF, "HANDO_NOTIF" },
{ RSL_MT_MR_CODEC_MOD_REQ, "CODEC_MOD_REQ" },
{ RSL_MT_MR_CODEC_MOD_ACK, "CODEC_MOD_ACK" },
{ RSL_MT_MR_CODEC_MOD_NACK, "CODEC_MOD_NACK" },
{ RSL_MT_MR_CODEC_MOD_PER, "CODEC_MODE_PER" },
{ RSL_MT_TFO_REP, "TFO_REP" },
{ RSL_MT_TFO_MOD_REQ, "TFO_MOD_REQ" },
{ RSL_MT_LOCATION_INFO, "LOCATION_INFO" },
{ 0, NULL }
};
/*! Get human-readable string for RSL Message Type */
const char *rsl_msg_name(uint8_t msg_type)
{
return get_value_string(rsl_msgt_names, msg_type);
}
/*! ip.access specific */
static const struct value_string rsl_ipac_msgt_names[] = {
{ RSL_MT_IPAC_PDCH_ACT, "IPAC_PDCH_ACT" },
{ RSL_MT_IPAC_PDCH_ACT_ACK, "IPAC_PDCH_ACT_ACK" },
{ RSL_MT_IPAC_PDCH_ACT_NACK, "IPAC_PDCH_ACT_NACK" },
{ RSL_MT_IPAC_PDCH_DEACT, "IPAC_PDCH_DEACT" },
{ RSL_MT_IPAC_PDCH_DEACT_ACK, "IPAC_PDCH_DEACT_ACK" },
{ RSL_MT_IPAC_PDCH_DEACT_NACK, "IPAC_PDCH_DEACT_NACK" },
{ RSL_MT_IPAC_CONNECT_MUX, "IPAC_CONNECT_MUX" },
{ RSL_MT_IPAC_CONNECT_MUX_ACK, "IPAC_CONNECT_MUX_ACK" },
{ RSL_MT_IPAC_CONNECT_MUX_NACK, "IPAC_CONNECT_MUX_NACK" },
{ RSL_MT_IPAC_BIND_MUX, "IPAC_BIND_MUX" },
{ RSL_MT_IPAC_BIND_MUX_ACK, "IPAC_BIND_MUX_ACK" },
{ RSL_MT_IPAC_BIND_MUX_NACK, "IPAC_BIND_MUX_NACK" },
{ RSL_MT_IPAC_DISC_MUX, "IPAC_DISC_MUX" },
{ RSL_MT_IPAC_DISC_MUX_ACK, "IPAC_DISC_MUX_ACK" },
{ RSL_MT_IPAC_DISC_MUX_NACK, "IPAC_DISC_MUX_NACK" },
{ RSL_MT_IPAC_CRCX, "IPAC_CRCX" },
{ RSL_MT_IPAC_CRCX_ACK, "IPAC_CRCX_ACK" },
{ RSL_MT_IPAC_CRCX_NACK, "IPAC_CRCX_NACK" },
{ RSL_MT_IPAC_MDCX, "IPAC_MDCX" },
{ RSL_MT_IPAC_MDCX_ACK, "IPAC_MDCX_ACK" },
{ RSL_MT_IPAC_MDCX_NACK, "IPAC_MDCX_NACK" },
{ RSL_MT_IPAC_DLCX_IND, "IPAC_DLCX_IND" },
{ RSL_MT_IPAC_DLCX, "IPAC_DLCX" },
{ RSL_MT_IPAC_DLCX_ACK, "IPAC_DLCX_ACK" },
{ RSL_MT_IPAC_DLCX_NACK, "IPAC_DLCX_NACK" },
{ RSL_MT_IPAC_DIR_RETR_ENQ, "IPAC_DIR_RETR_ENQ" },
{ 0, NULL }
};
/*! Get human-readable name of ip.access RSL msg type */
const char *rsl_ipac_msg_name(uint8_t msg_type)
{
return get_value_string(rsl_ipac_msgt_names, msg_type);
}
/*! Get human-readable name of standard or ip.access RSL msg type.
* If msg_type is a standard RSL message type, return its human-readable name.
* Otherwise return rsl_ipac_msg_name(msg_type). */
const char *rsl_or_ipac_msg_name(uint8_t msg_type)
{
const char *str = get_value_string_or_null(rsl_msgt_names, msg_type);
if (str)
return str;
return rsl_ipac_msg_name(msg_type);
}
static const struct value_string rsl_rlm_cause_strs[] = {
{ RLL_CAUSE_T200_EXPIRED, "Timer T200 expired (N200+1) times" },
{ RLL_CAUSE_REEST_REQ, "Re-establishment request" },
{ RLL_CAUSE_UNSOL_UA_RESP, "Unsolicited UA response" },
{ RLL_CAUSE_UNSOL_DM_RESP, "Unsolicited DM response" },
{ RLL_CAUSE_UNSOL_DM_RESP_MF, "Unsolicited DM response, multiple frame" },
{ RLL_CAUSE_UNSOL_SPRV_RESP, "Unsolicited supervisory response" },
{ RLL_CAUSE_SEQ_ERR, "Sequence Error" },
{ RLL_CAUSE_UFRM_INC_PARAM, "U-Frame with incorrect parameters" },
{ RLL_CAUSE_SFRM_INC_PARAM, "S-Frame with incorrect parameters" },
{ RLL_CAUSE_IFRM_INC_MBITS, "I-Frame with incorrect use of M bit" },
{ RLL_CAUSE_IFRM_INC_LEN, "I-Frame with incorrect length" },
{ RLL_CAUSE_FRM_UNIMPL, "Frame not implemented" },
{ RLL_CAUSE_SABM_MF, "SABM command, multiple frame established state" },
{ RLL_CAUSE_SABM_INFO_NOTALL, "SABM frame with information not allowed in this state" },
{ 0, NULL },
};
/*! Get human-readable string for RLM cause */
const char *rsl_rlm_cause_name(uint8_t err)
{
return get_value_string(rsl_rlm_cause_strs, err);
}
/* Section 3.3.2.3 TS 05.02. I think this looks like a table */
int rsl_ccch_conf_to_bs_cc_chans(int ccch_conf)
{
switch (ccch_conf) {
case RSL_BCCH_CCCH_CONF_1_NC:
return 1;
case RSL_BCCH_CCCH_CONF_1_C:
return 1;
case RSL_BCCH_CCCH_CONF_2_NC:
return 2;
case RSL_BCCH_CCCH_CONF_3_NC:
return 3;
case RSL_BCCH_CCCH_CONF_4_NC:
return 4;
default:
return -1;
}
}
/* Section 3.3.2.3 TS 05.02 */
int rsl_ccch_conf_to_bs_ccch_sdcch_comb(int ccch_conf)
{
switch (ccch_conf) {
case RSL_BCCH_CCCH_CONF_1_NC:
return 0;
case RSL_BCCH_CCCH_CONF_1_C:
return 1;
case RSL_BCCH_CCCH_CONF_2_NC:
return 0;
case RSL_BCCH_CCCH_CONF_3_NC:
return 0;
case RSL_BCCH_CCCH_CONF_4_NC:
return 0;
default:
return -1;
}
}
/*! Push a RSL RLL header onto an existing msgb
* \param msg Message Buffer to which RLL header shall be pushed
* \param[in] msg_type RSL Message Type
* \param[in] chan_nr RSL Channel Number
* \param[in] link_id RSL Link Identifier
* \param[in] transparent Transparent to BTS (1) or not (0) */
void rsl_rll_push_hdr(struct msgb *msg, uint8_t msg_type, uint8_t chan_nr,
uint8_t link_id, int transparent)
{
struct abis_rsl_rll_hdr *rh;
rh = (struct abis_rsl_rll_hdr *) msgb_push(msg, sizeof(*rh));
rsl_init_rll_hdr(rh, msg_type);
if (transparent)
rh->c.msg_discr |= ABIS_RSL_MDISC_TRANSP;
rh->chan_nr = chan_nr;
rh->link_id = link_id;
/* set the l2 header pointer */
msg->l2h = (uint8_t *)rh;
}
/*! Wrap msgb in L3 Info IE and push a RSL RLL header
* \param[in] msg Message Buffer to which L3 Header shall be appended
* \param[in] msg_type RSL Message Type
* \param[in] chan_hr RSL Channel Number
* \param[in] link_id Link Identififer
* \param[in] transparent Transparent to BTS (1) or not (0) */
void rsl_rll_push_l3(struct msgb *msg, uint8_t msg_type, uint8_t chan_nr,
uint8_t link_id, int transparent)
{
uint8_t l3_len = msg->tail - (uint8_t *)msgb_l3(msg);
/* construct a RSLms RLL message (DATA INDICATION, UNIT DATA
* INDICATION) and send it off via RSLms */
/* Push the L3 IE tag and lengh */
msgb_tv16_push(msg, RSL_IE_L3_INFO, l3_len);
/* Then push the RSL header */
rsl_rll_push_hdr(msg, msg_type, chan_nr, link_id, transparent);
}
/*! Create msgb with RSL RLL header
* \param[in] msg_type RSL Message Type
* \param[in] chan_nr RSL Channel Number
* \param[in] link_id RSL Link Identifier
* \param[in] transparent Transparent to BTS (1) or not (0)
* \returns callee-allocated msgb; NULL on error */
struct msgb *rsl_rll_simple(uint8_t msg_type, uint8_t chan_nr,
uint8_t link_id, int transparent)
{
struct abis_rsl_rll_hdr *rh;
struct msgb *msg;
msg = msgb_alloc_headroom(RSL_ALLOC_SIZE+RSL_ALLOC_HEADROOM,
RSL_ALLOC_HEADROOM, "rsl_rll_simple");
if (!msg)
return NULL;
/* put the RSL header */
rh = (struct abis_rsl_rll_hdr *) msgb_put(msg, sizeof(*rh));
rsl_init_rll_hdr(rh, msg_type);
if (transparent)
rh->c.msg_discr |= ABIS_RSL_MDISC_TRANSP;
rh->chan_nr = chan_nr;
rh->link_id = link_id;
/* set the l2 header pointer */
msg->l2h = (uint8_t *)rh;
return msg;
}
/*! TLV parser definitions for IPA embedded IEs */
const struct tlv_definition rsl_ipac_eie_tlvdef = {
.def = {
[RSL_IPAC_EIE_RXLEV] = { TLV_TYPE_TV },
[RSL_IPAC_EIE_RXQUAL] = { TLV_TYPE_TV },
[RSL_IPAC_EIE_FREQ_ERR] = { TLV_TYPE_FIXED, 2 },
[RSL_IPAC_EIE_TIMING_ERR] = { TLV_TYPE_TV },
[RSL_IPAC_EIE_MEAS_AVG_CFG] = { TLV_TYPE_TLV },
[RSL_IPAC_EIE_BS_PWR_CTL] = { TLV_TYPE_FIXED, 3 },
[RSL_IPAC_EIE_MS_PWR_CTL] = { TLV_TYPE_FIXED, 3 },
[RSL_IPAC_EIE_HANDO_THRESH] = { TLV_TYPE_FIXED, 6 },
[RSL_IPAC_EIE_NCELL_DEFAULTS] = { TLV_TYPE_FIXED, 3 },
[RSL_IPAC_EIE_NCELL_LIST] = { TLV_TYPE_TLV },
[RSL_IPAC_EIE_PC_THRESH_COMP] = { TLV_TYPE_FIXED, 10 },
[RSL_IPAC_EIE_HO_THRESH_COMP] = { TLV_TYPE_FIXED, 10 },
[RSL_IPAC_EIE_HO_CAUSE] = { TLV_TYPE_TLV },
[RSL_IPAC_EIE_HO_CANDIDATES] = { TLV_TYPE_TLV },
[RSL_IPAC_EIE_NCELL_BA_CHG_LIST]= { TLV_TYPE_TLV },
[RSL_IPAC_EIE_NUM_OF_MS] = { TLV_TYPE_TV },
[RSL_IPAC_EIE_HO_CAND_EXT] = { TLV_TYPE_TLV },
[RSL_IPAC_EIE_NCELL_DEF_EXT] = { TLV_TYPE_TLV },
[RSL_IPAC_EIE_NCELL_LIST_EXT] = { TLV_TYPE_TLV },
[RSL_IPAC_EIE_MASTER_KEY] = { TLV_TYPE_TLV },
[RSL_IPAC_EIE_MASTER_SALT] = { TLV_TYPE_TLV },
[RSL_IPAC_EIE_MEAS_TRANS_RES] = {TLV_TYPE_TV},
[RSL_IPAC_EIE_3G_HO_PARAM] = { TLV_TYPE_TLV },
[RSL_IPAC_EIE_3G_NCELL_LIST] = { TLV_TYPE_TLV },
[RSL_IPAC_EIE_SDCCH_CTL_PARAM] = { TLV_TYPE_TV },
[RSL_IPAC_EIE_AMR_CONV_THRESH] = { TLV_TYPE_FIXED, 9 },
},
};
/*! String names of RSL Channel Activation Types */
const struct value_string rsl_act_type_names[] = {
{ RSL_ACT_TYPE_INITIAL, "INITIAL" },
{ RSL_ACT_TYPE_REACT, "REACT" },
{ RSL_ACT_INTRA_IMM_ASS, "INTRA_IMM_ASS" },
{ RSL_ACT_INTRA_NORM_ASS, "INTRA_NORM_ASS" },
{ RSL_ACT_INTER_ASYNC, "INTER_ASYNC" },
{ RSL_ACT_INTER_SYNC, "INTER_SYNC" },
{ RSL_ACT_SECOND_ADD, "SECOND_ADD" },
{ RSL_ACT_SECOND_MULTI, "SECOND_MULTI" },
{ RSL_ACT_OSMO_PDCH, "OSMO_PDCH" },
{ 0, NULL }
};
/*! @} */
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