From d284cd9f43a6954be338d85470a17ac6796b56d5 Mon Sep 17 00:00:00 2001 From: Harald Welte Date: Mon, 1 Mar 2010 21:58:31 +0100 Subject: Import value_string utilities and some RSL stuff from OpenBSC --- include/osmocore/Makefile.am | 2 +- include/osmocore/rsl.h | 24 +++++ include/osmocore/utils.h | 11 ++ src/Makefile.am | 2 +- src/rsl.c | 239 +++++++++++++++++++++++++++++++++++++++++++ src/utils.c | 32 ++++++ 6 files changed, 308 insertions(+), 2 deletions(-) create mode 100644 include/osmocore/rsl.h create mode 100644 src/rsl.c create mode 100644 src/utils.c diff --git a/include/osmocore/Makefile.am b/include/osmocore/Makefile.am index cc9db084..8754295f 100644 --- a/include/osmocore/Makefile.am +++ b/include/osmocore/Makefile.am @@ -1,6 +1,6 @@ osmocore_HEADERS = signal.h linuxlist.h timer.h talloc.h msgb.h select.h \ tlv.h bitvec.h comp128.h statistics.h gsm_utils.h utils.h \ - gsmtap.h write_queue.h + gsmtap.h write_queue.h rsl.h osmocoredir = $(includedir)/osmocore diff --git a/include/osmocore/rsl.h b/include/osmocore/rsl.h new file mode 100644 index 00000000..3a2b04d4 --- /dev/null +++ b/include/osmocore/rsl.h @@ -0,0 +1,24 @@ +#ifndef _OSMOCORE_RSL_H +#define _OSMOCORE_RSL_H + +#include +#include +#include + +void rsl_init_rll_hdr(struct abis_rsl_rll_hdr *dh, uint8_t msg_type); + +extern const struct tlv_definition rsl_att_tlvdef; +#define rsl_tlv_parse(dec, buf, len) \ + tlv_parse(dec, &rsl_att_tlvdef, buf, len, 0, 0) + +/* encode channel number as per Section 9.3.1 */ +uint8_t rsl_enc_chan_nr(uint8_t type, uint8_t subch, uint8_t timeslot); + +const struct value_string rsl_rlm_cause_strs[]; + +const char *rsl_err_name(uint8_t 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); + +#endif /* _OSMOCORE_RSL_H */ diff --git a/include/osmocore/utils.h b/include/osmocore/utils.h index 198f45a9..cf3b4607 100644 --- a/include/osmocore/utils.h +++ b/include/osmocore/utils.h @@ -3,4 +3,15 @@ #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) +#include + +struct value_string { + unsigned int value; + const char *str; +}; + +const char *get_value_string(const struct value_string *vs, uint32_t val); +int get_string_value(const struct value_string *vs, const char *str); + + #endif diff --git a/src/Makefile.am b/src/Makefile.am index c0c94883..65415eed 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -9,4 +9,4 @@ lib_LTLIBRARIES = libosmocore.la libosmocore_la_SOURCES = msgb.c timer.c talloc.c select.c signal.c \ tlv_parser.c bitvec.c comp128.c gsm_utils.c statistics.c \ - write_queue.c + write_queue.c utils.c rsl.c diff --git a/src/rsl.c b/src/rsl.c new file mode 100644 index 00000000..a8041d5f --- /dev/null +++ b/src/rsl.c @@ -0,0 +1,239 @@ +/* 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 */ + +/* (C) 2008-2009 by Harald Welte + * + * 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 +#include + +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; +} + +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 */ +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 &= 0x07; + break; + case RSL_CHAN_SDCCH8_ACCH: + subch &= 0x07; + break; + default: + /* no subchannels allowed */ + subch = 0x00; + break; + } + ret |= (subch << 3); + + return ret; +} + +/* FIXME: convert to value_string */ +static const char *rsl_err_vals[0xff] = { + [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", +}; + +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, "Fraeme 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 }, +}; + +const char *rsl_err_name(uint8_t err) +{ + if (rsl_err_vals[err]) + return rsl_err_vals[err]; + else + return "unknown"; +} + +/* 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; + } +} diff --git a/src/utils.c b/src/utils.c new file mode 100644 index 00000000..0d878c7b --- /dev/null +++ b/src/utils.c @@ -0,0 +1,32 @@ + +#include +#include +#include + +#include + +const char *get_value_string(const struct value_string *vs, uint32_t val) +{ + int i; + + for (i = 0;; i++) { + if (vs[i].value == 0 && vs[i].str == NULL) + break; + if (vs[i].value == val) + return vs[i].str; + } + return "unknown"; +} + +int get_string_value(const struct value_string *vs, const char *str) +{ + int i; + + for (i = 0;; i++) { + if (vs[i].value == 0 && vs[i].str == NULL) + break; + if (!strcasecmp(vs[i].str, str)) + return vs[i].value; + } + return -EINVAL; +} -- cgit v1.2.3