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osmo-bsc/src/osmo-bsc/bts_ipaccess_nanobts_omlattr.c

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/* ip.access nanoBTS specific code, OML attribute table generator */
/* (C) 2016-2023 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>
* All Rights Reserved
*
* Author: Philipp Maier
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation; either version 3 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <arpa/inet.h>
#include <osmocom/core/msgb.h>
#include <osmocom/bsc/gsm_data.h>
#include <osmocom/bsc/abis_nm.h>
#include <osmocom/bsc/bts.h>
#include <osmocom/gsm/bts_features.h>
const struct tlv_definition ipacc_eie_tlv_def = {
.def = {
/* TODO: add more values from enum ipac_eie */
[NM_IPAC_EIE_FREQ_BANDS] = { TLV_TYPE_TL16V },
[NM_IPAC_EIE_MAX_TA] = { TLV_TYPE_TL16V },
[NM_IPAC_EIE_CIPH_ALGOS] = { TLV_TYPE_TL16V },
[NM_IPAC_EIE_CHAN_TYPES] = { TLV_TYPE_TL16V },
[NM_IPAC_EIE_CHAN_MODES] = { TLV_TYPE_TL16V },
[NM_IPAC_EIE_GPRS_CODING] = { TLV_TYPE_TL16V },
[NM_IPAC_EIE_RTP_FEATURES] = { TLV_TYPE_TL16V },
[NM_IPAC_EIE_RSL_FEATURES] = { TLV_TYPE_TL16V },
}
};
static inline uint32_t ipacc_parse_supp_flags(const struct abis_om_fom_hdr *foh,
const struct value_string *flags,
const struct tlv_p_entry *e,
const char *text)
{
uint32_t u32 = 0;
for (unsigned int i = 0; i < OSMO_MAX(e->len, 4); i++)
u32 |= e->val[i] << (i * 8);
for (const struct value_string *vs = flags; vs->value && vs->str; vs++) {
if (u32 & vs->value)
LOGPFOH(DNM, LOGL_INFO, foh, "%s '%s' is supported\n", text, vs->str);
}
return u32;
}
/* Parse ip.access Supported Features IE */
int ipacc_parse_supp_features(const struct gsm_bts *bts,
const struct abis_om_fom_hdr *foh,
const uint8_t *data, uint16_t data_len)
{
const struct tlv_p_entry *e;
struct tlv_parsed tp;
if (tlv_parse(&tp, &ipacc_eie_tlv_def, data, data_len, 0, 0) < 0) {
LOGPFOH(DNM, LOGL_ERROR, foh, "%s(): tlv_parse failed\n", __func__);
return -EINVAL;
}
/* TODO: store the flags in the respective MO state */
if ((e = TLVP_GET(&tp, NM_IPAC_EIE_FREQ_BANDS)) != NULL)
ipacc_parse_supp_flags(foh, abis_nm_ipacc_freq_band_desc, e, "Freq. band");
if ((e = TLVP_GET(&tp, NM_IPAC_EIE_CIPH_ALGOS)) != NULL)
ipacc_parse_supp_flags(foh, abis_nm_ipacc_ciph_algo_desc, e, "Ciphering algorithm");
if ((e = TLVP_GET(&tp, NM_IPAC_EIE_CHAN_TYPES)) != NULL)
ipacc_parse_supp_flags(foh, abis_nm_ipacc_chant_desc, e, "Channel type");
if ((e = TLVP_GET(&tp, NM_IPAC_EIE_CHAN_MODES)) != NULL)
ipacc_parse_supp_flags(foh, abis_nm_ipacc_chanm_desc, e, "Channel mode");
if ((e = TLVP_GET(&tp, NM_IPAC_EIE_GPRS_CODING)) != NULL)
ipacc_parse_supp_flags(foh, abis_nm_ipacc_gprs_coding_desc, e, "GPRS Coding Scheme");
if ((e = TLVP_GET(&tp, NM_IPAC_EIE_RTP_FEATURES)) != NULL)
ipacc_parse_supp_flags(foh, abis_nm_ipacc_rtp_feat_desc, e, "RTP Feature");
if ((e = TLVP_GET(&tp, NM_IPAC_EIE_RSL_FEATURES)) != NULL)
ipacc_parse_supp_flags(foh, abis_nm_ipacc_rsl_feat_desc, e, "RSL Feature");
if (TLVP_PRES_LEN(&tp, NM_IPAC_EIE_MAX_TA, 1)) {
uint8_t u8 = *TLVP_VAL(&tp, NM_IPAC_EIE_MAX_TA);
LOGPFOH(DNM, LOGL_DEBUG, foh, "Max Timing Advance %u\n", u8);
}
return 0;
}
/* 3GPP TS 52.021 section 8.6.1 Set BTS Attributes */
struct msgb *nanobts_gen_set_bts_attr(struct gsm_bts *bts)
{
struct msgb *msgb;
uint8_t buf[256];
int rlt;
msgb = msgb_alloc(1024, __func__);
if (!msgb)
return NULL;
/* Interference level Boundaries: 0 .. X5 (3GPP TS 52.021 sec 9.4.25) */
msgb_tv_fixed_put(msgb, NM_ATT_INTERF_BOUND,
sizeof(bts->interf_meas_params_cfg.bounds_dbm),
&bts->interf_meas_params_cfg.bounds_dbm[0]);
/* Intave: Interference Averaging period (3GPP TS 52.021 sec 9.4.24) */
msgb_tv_put(msgb, NM_ATT_INTAVE_PARAM, bts->interf_meas_params_cfg.avg_period);
/* Connection Failure Criterion (3GPP TS 52.021 sec 9.4.14) */
rlt = gsm_bts_get_radio_link_timeout(bts);
if (rlt == -1) {
/* Osmocom extension: Use infinite radio link timeout */
buf[0] = 0xFF;
buf[1] = 0x00;
} else {
/* conn fail based on SACCH error rate */
buf[0] = 0x01;
buf[1] = rlt;
}
msgb_tl16v_put(msgb, NM_ATT_CONN_FAIL_CRIT, 2, buf);
/* T200 (3GPP TS 52.021 sec 9.4.53) */
memcpy(buf, "\x1e\x24\x24\xa8\x34\x21\xa8", 7);
msgb_tv_fixed_put(msgb, NM_ATT_T200, 7, buf);
/* Max Timing Advance (3GPP TS 52.021 sec 9.4.31) */
msgb_tv_put(msgb, NM_ATT_MAX_TA, 0x3f);
/* Overload Period (3GPP TS 52.021 sec 9.4.39), seconds */
memcpy(buf, "\x00\x01\x0a", 3);
msgb_tv_fixed_put(msgb, NM_ATT_OVERL_PERIOD, 3, buf);
/* CCCH Load Threshold (3GPP TS 12.21 sec 9.4.12), percent */
msgb_tv_put(msgb, NM_ATT_CCCH_L_T, bts->ccch_load_ind_thresh);
/* CCCH Load Indication Period (3GPP TS 12.21 sec 9.4.11), seconds */
msgb_tv_put(msgb, NM_ATT_CCCH_L_I_P, bts->ccch_load_ind_period);
/* RACH Busy Threshold (3GPP TS 12.21 sec 9.4.44), -dBm */
buf[0] = 90; /* -90 dBm as default "busy" threshold */
if (bts->rach_b_thresh != -1)
buf[0] = bts->rach_b_thresh & 0xff;
msgb_tv_put(msgb, NM_ATT_RACH_B_THRESH, buf[0]);
/* RACH Load Averaging Slots (3GPP TS 12.21 sec 9.4.45), 1000 slots */
buf[0] = 0x03;
buf[1] = 0xe8;
if (bts->rach_ldavg_slots != -1) {
buf[0] = (bts->rach_ldavg_slots >> 8) & 0x0f;
buf[1] = bts->rach_ldavg_slots & 0xff;
}
msgb_tv_fixed_put(msgb, NM_ATT_LDAVG_SLOTS, 2, buf);
/* BTS Air Timer (3GPP TS 12.21 sec 9.4.10), 10 milliseconds */
msgb_tv_put(msgb, NM_ATT_BTS_AIR_TIMER, osmo_tdef_get(bts->network->T_defs, 3105, OSMO_TDEF_MS, -1)/10);
/* NY1 (3GPP TS 12.21 sec 9.4.37), number of retransmissions of physical config */
gsm_bts_check_ny1(bts);
msgb_tv_put(msgb, NM_ATT_NY1, osmo_tdef_get(bts->network->T_defs, -3105, OSMO_TDEF_CUSTOM, -1));
/* BCCH ARFCN (3GPP TS 12.21 sec 9.4.8) */
buf[0] = (bts->c0->arfcn >> 8) & 0x0f;
buf[1] = bts->c0->arfcn & 0xff;
msgb_tv_fixed_put(msgb, NM_ATT_BCCH_ARFCN, 2, buf);
/* BSIC (3GPP TS 12.21 sec 9.4.9) */
msgb_tv_put(msgb, NM_ATT_BSIC, bts->bsic);
abis_nm_ipaccess_cgi(buf, bts);
msgb_tl16v_put(msgb, NM_ATT_IPACC_CGI, 7, buf);
return msgb;
}
struct msgb *nanobts_gen_set_nse_attr(struct gsm_bts_sm *bts_sm)
{
struct msgb *msgb;
uint8_t buf[2];
struct abis_nm_ipacc_att_ns_cfg ns_cfg;
struct abis_nm_ipacc_att_bssgp_cfg bssgp_cfg;
struct gsm_bts *bts = gsm_bts_sm_get_bts(bts_sm);
msgb = msgb_alloc(1024, __func__);
if (!msgb)
return NULL;
/* NSEI 925 */
buf[0] = bts_sm->gprs.nse.nsei >> 8;
buf[1] = bts_sm->gprs.nse.nsei & 0xff;
msgb_tl16v_put(msgb, NM_ATT_IPACC_NSEI, 2, buf);
osmo_static_assert(ARRAY_SIZE(bts_sm->gprs.nse.timer) == 7, nse_timer_array_wrong_size);
ns_cfg = (struct abis_nm_ipacc_att_ns_cfg){
.un_blocking_timer = bts_sm->gprs.nse.timer[0],
.un_blocking_retries = bts_sm->gprs.nse.timer[1],
.reset_timer = bts_sm->gprs.nse.timer[2],
.reset_retries = bts_sm->gprs.nse.timer[3],
.test_timer = bts_sm->gprs.nse.timer[4],
.alive_timer = bts_sm->gprs.nse.timer[5],
.alive_retries = bts_sm->gprs.nse.timer[6],
};
msgb_tl16v_put(msgb, NM_ATT_IPACC_NS_CFG, sizeof(ns_cfg), (const uint8_t *)&ns_cfg);
osmo_static_assert(ARRAY_SIZE(bts->gprs.cell.timer) == 11, cell_timer_array_wrong_size);
bssgp_cfg = (struct abis_nm_ipacc_att_bssgp_cfg){
.t1_s = bts->gprs.cell.timer[0],
.t1_blocking_retries = bts->gprs.cell.timer[1],
.t1_unblocking_retries = bts->gprs.cell.timer[2],
.t2_s = bts->gprs.cell.timer[3],
.t2_retries = bts->gprs.cell.timer[4],
.t3_100ms = bts->gprs.cell.timer[5],
.t3_retries = bts->gprs.cell.timer[6],
.t4_100ms = bts->gprs.cell.timer[7],
.t4_retries = bts->gprs.cell.timer[8],
.t5_s = bts->gprs.cell.timer[9],
.t5_retries = bts->gprs.cell.timer[10],
};
msgb_tl16v_put(msgb, NM_ATT_IPACC_BSSGP_CFG, sizeof(bssgp_cfg), (const uint8_t *)&bssgp_cfg);
return msgb;
}
struct msgb *nanobts_gen_set_cell_attr(struct gsm_bts *bts)
{
const struct gsm_gprs_cell *cell = &bts->gprs.cell;
const struct gprs_rlc_cfg *rlcc = &cell->rlc_cfg;
struct msgb *msgb;
uint8_t buf[2];
msgb = msgb_alloc(1024, __func__);
if (!msgb)
return NULL;
/* routing area code */
buf[0] = bts->gprs.rac;
msgb_tl16v_put(msgb, NM_ATT_IPACC_RAC, 1, buf);
buf[0] = rlcc->paging.repeat_time / 50; /* units of 50ms */
buf[1] = rlcc->paging.repeat_count;
msgb_tl16v_put(msgb, NM_ATT_IPACC_GPRS_PAGING_CFG, 2, buf);
/* BVCI 925 */
buf[0] = cell->bvci >> 8;
buf[1] = cell->bvci & 0xff;
msgb_tl16v_put(msgb, NM_ATT_IPACC_BVCI, 2, buf);
/* all timers in seconds, unless otherwise stated */
const struct abis_nm_ipacc_att_rlc_cfg rlc_cfg = {
.t3142 = rlcc->parameter[RLC_T3142],
.t3169 = rlcc->parameter[RLC_T3169],
.t3191 = rlcc->parameter[RLC_T3191],
.t3193_10ms = rlcc->parameter[RLC_T3193],
.t3195 = rlcc->parameter[RLC_T3195],
.n3101 = rlcc->parameter[RLC_N3101],
.n3103 = rlcc->parameter[RLC_N3103],
.n3105 = rlcc->parameter[RLC_N3105],
.rlc_cv_countdown = rlcc->parameter[CV_COUNTDOWN],
};
msgb_tl16v_put(msgb, NM_ATT_IPACC_RLC_CFG, sizeof(rlc_cfg), (const uint8_t *)&rlc_cfg);
switch (bts->type) {
case GSM_BTS_TYPE_NANOBTS:
if (cell->mo.ipaccess.obj_version < 4)
break;
/* fall-through */
case GSM_BTS_TYPE_OSMOBTS:
/* CS1..CS4 flags encoded in the first octet */
buf[0] = rlcc->cs_mask & 0x0f;
/* MCS1..MSC8 flags encoded in the second octet */
buf[1] = 0x00;
if (bts->gprs.mode == BTS_GPRS_EGPRS) {
/* MSC9 is special and also goes to the first octet */
if (rlcc->cs_mask & (1 << GPRS_MCS9))
buf[0] |= (1 << 7);
buf[1] = (rlcc->cs_mask >> 4) & 0xff;
}
msgb_tl16v_put(msgb, NM_ATT_IPACC_CODING_SCHEMES, 2, buf);
break;
default:
break;
}
switch (bts->type) {
case GSM_BTS_TYPE_NANOBTS:
if (cell->mo.ipaccess.obj_version < 20)
break;
/* fall-through */
case GSM_BTS_TYPE_OSMOBTS:
{
const struct abis_nm_ipacc_att_rlc_cfg_2 rlc_cfg_2 = {
.t_dl_tbf_ext_10ms = htons(rlcc->parameter[T_DL_TBF_EXT] / 10),
.t_ul_tbf_ext_10ms = htons(rlcc->parameter[T_UL_TBF_EXT] / 10),
.initial_cs = rlcc->initial_cs,
};
msgb_tl16v_put(msgb, NM_ATT_IPACC_RLC_CFG_2,
sizeof(rlc_cfg_2), (const uint8_t *)&rlc_cfg_2);
break;
}
default:
break;
}
switch (bts->type) {
case GSM_BTS_TYPE_NANOBTS:
if (cell->mo.ipaccess.obj_version < 30)
break;
/* fall-through */
case GSM_BTS_TYPE_OSMOBTS:
{
const struct abis_nm_ipacc_att_rlc_cfg_3 rlc_cfg_3 = {
.initial_mcs = rlcc->initial_mcs,
};
msgb_tl16v_put(msgb, NM_ATT_IPACC_RLC_CFG_3,
sizeof(rlc_cfg_3), (const uint8_t *)&rlc_cfg_3);
break;
}
default:
break;
}
return msgb;
}
struct msgb *nanobts_gen_set_nsvc_attr(struct gsm_gprs_nsvc *nsvc)
{
struct msgb *msgb;
uint8_t buf[256];
msgb = msgb_alloc(1024, __func__);
if (!msgb)
return NULL;
/* 925 */
buf[0] = nsvc->nsvci >> 8;
buf[1] = nsvc->nsvci & 0xff;
msgb_tl16v_put(msgb, NM_ATT_IPACC_NSVCI, 2, buf);
switch (nsvc->remote.u.sa.sa_family) {
case AF_INET6:
/* all fields are encoded in network byte order */
/* protocol family */
buf[0] = OSMO_NSVC_ADDR_IPV6;
/* padding */
buf[1] = 0x00;
/* local udp port */
osmo_store16be(nsvc->local_port, &buf[2]);
/* remote udp port */
memcpy(&buf[4], &nsvc->remote.u.sin6.sin6_port, sizeof(uint16_t));
/* remote ip address */
memcpy(&buf[6], &nsvc->remote.u.sin6.sin6_addr, sizeof(struct in6_addr));
msgb_tl16v_put(msgb, NM_ATT_OSMO_NS_LINK_CFG, 6 + sizeof(struct in6_addr), buf);
break;
case AF_INET:
/* remote udp port */
memcpy(&buf[0], &nsvc->remote.u.sin.sin_port, sizeof(uint16_t));
/* remote ip address */
memcpy(&buf[2], &nsvc->remote.u.sin.sin_addr, sizeof(struct in_addr));
/* local udp port */
osmo_store16be(nsvc->local_port, &buf[6]);
msgb_tl16v_put(msgb, NM_ATT_IPACC_NS_LINK_CFG, 8, buf);
break;
default:
break;
}
return msgb;
}
struct msgb *nanobts_gen_set_radio_attr(struct gsm_bts *bts,
struct gsm_bts_trx *trx)
{
struct msgb *msgb;
uint8_t buf[256];
msgb = msgb_alloc(1024, __func__);
if (!msgb)
return NULL;
/* number of -2dB reduction steps / Pn */
msgb_tv_put(msgb, NM_ATT_RF_MAXPOWR_R, trx->max_power_red / 2);
buf[0] = trx->arfcn >> 8;
buf[1] = trx->arfcn & 0xff;
msgb_tl16v_put(msgb, NM_ATT_ARFCN_LIST, 2, buf);
return msgb;
}
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