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Add basic O1 telnet module

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This adds a basic telnet module to support the O1 interface at the DU,
to be used together with the oai/o1-adapter>. Concretely, this first
version supports to

- read/modify cell parameters
- stop/start the L1
This commit is contained in:
Robert Schmidt
2024-12-16 16:18:11 +01:00
parent 68ae3ea11c
commit aba506e5e3
4 changed files with 575 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
common/utils/telnetsrv/CMakeLists.txt
+7 -1
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@@ -75,7 +75,13 @@ add_library(telnetsrv_rrc MODULE telnetsrv_rrc.c)
target_link_libraries(telnetsrv_rrc PRIVATE asn1_nr_rrc_hdrs asn1_lte_rrc_hdrs)
add_dependencies(telnetsrv telnetsrv_rrc)
message(STATUS "Add CI specific telnet functions in libtelnetsrv_o1.so")
add_library(telnetsrv_o1 MODULE telnetsrv_o1.c)
target_link_libraries(telnetsrv_o1 PRIVATE asn1_nr_rrc_hdrs asn1_lte_rrc_hdrs)
add_dependencies(telnetsrv telnetsrv_o1)
# all libraries should be written to root build dir
set_target_properties(telnetsrv telnetsrv_enb telnetsrv_5Gue telnetsrv_ci telnetsrv_ciUE telnetsrv_bearer telnetsrv_rrc
set_target_properties(telnetsrv telnetsrv_enb telnetsrv_5Gue telnetsrv_ci telnetsrv_ciUE
telnetsrv_bearer telnetsrv_rrc telnetsrv_o1
PROPERTIES LIBRARY_OUTPUT_DIRECTORY ../../..
)
common/utils/telnetsrv/DOC/telneto1.md
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@@ -0,0 +1,176 @@
[[_TOC_]]
The telnet O1 module (`telnetsrv_o1.c`) can be used to perform some O1-related
actions (reading data, starting and stopping the nr-softmodem, reconfigurating
frequency and bandwidth).
# General usage
The usage is similar to the general telnet usage, but in short:
```
./build_oai --ninja -c --gNB --nrUE --build-lib telnetsrv
```
to build everything including the telnet library. Then, run the nr-softmodem
by activating telnet and loading the `o1` module:
```
./nr-softmodem -O <config> --telnetsrv --telnetsrv.shrmod o1
```
Afterwards, it should be possible to connect via telnet on localhost, port
9090. Use `help` to get help on the different command sections, and type e.g.
`o1 stats` to get statistics (more information further below):
```
$ telnet 127.0.0.1 9090
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '^]'.
softmodem_gnb> help
[...]
module 4 = o1:
o1 stats
o1 config ?
o1 stop_modem
o1 start_modem
[...]
softmodem_gnb> o1 stats
[...]
softmodem_gnb> exit
Connection closed by foreign host.
```
It also possible to send a command "directly from the command line", by piping
the command into netcat:
```
echo o1 stats | nc -N 127.0.0.1 9090
```
Note that only one telnet client can be connected at a time.
# Get statistics
Use the `o1 stats` command. The output is in JSON format:
```json
{
"o1-config": {
"BWP": {
"dl": [
{
"bwp3gpp:isInitialBwp": true,
"bwp3gpp:numberOfRBs": 106,
"bwp3gpp:startRB": 0,
"bwp3gpp:subCarrierSpacing": 30
}
],
"ul": [
{
"bwp3gpp:isInitialBwp": true,
"bwp3gpp:numberOfRBs": 106,
"bwp3gpp:startRB": 0,
"bwp3gpp:subCarrierSpacing": 30
}
]
},
"NRCELLDU": {
"nrcelldu3gpp:ssbFrequency": 641280,
"nrcelldu3gpp:arfcnDL": 640008,
"nrcelldu3gpp:bSChannelBwDL": 40,
"nrcelldu3gpp:arfcnUL": 640008,
"nrcelldu3gpp:bSChannelBwUL": 40,
"nrcelldu3gpp:nRPCI": 0,
"nrcelldu3gpp:nRTAC": 1,
"nrcelldu3gpp:mcc": "208",
"nrcelldu3gpp:mnc": "95",
"nrcelldu3gpp:sd": 16777215,
"nrcelldu3gpp:sst": 1
},
"device": {
"gnbId": 1,
"gnbName": "gNB-Eurecom-5GNRBox",
"vendor": "OpenAirInterface"
}
},
"O1-Operational": {
"frame-type": "tdd",
"band-number": 78,
"num-ues": 1,
"ues": [
6876
],
"load": 9,
"ues-thp": [
{
"rnti": 6876,
"dl": 3279,
"ul": 2725
}
]
}
}
```
Note that no actual JSON engine is used, so no actual verification is done; it
is for convenience of the consumer. To verify, you can employ `jq`:
```
echo o1 stats | nc -N 127.0.0.1 9090 | awk '/^{$/, /^}$/' | jq .
```
(`awk`'s pattern matching makes that only everything between the first `{` and
its corresponding `}` is printed).
There are two sections:
1. `.o1-config` show some stats that map directly to the O1 Netconf model. Note
that only one MCC/MNC/SD/SST (each) are supported right now. Also, note that
as per 3GPP specifications, SD of value `0xffffff` (16777215 in decimal)
means "no SD". `bSChannelBwDL/UL` is reported in MHz.
2. `.O1-operational` output some statistics that do not map yet to any netconf
parameters, but that might be useful nevertheless for a consumer.
# Write a new configuration
Use `o1 config` to write a configuration:
```
echo o1 config nrcelldu3gpp:ssbFrequency 620736 nrcelldu3gpp:arfcnDL 620020 nrcelldu3gpp:bSChannelBwDL 51 bwp3gpp:numberOfRBs 51 bwp3gpp:startRB 0 | nc -N 127.0.0.1 9090
```
You have to pass the above parameters in exactly this order. The softmodem
needs to be stopped; it will pick up the new configuration when starting the
softmodem again.
Note that you cannot switch three-quarter sampling for this as of now.
For values of the configuration, refer to the next section.
# Use hardcoded configuration
Use `o1 bwconfig` to write a hard-coded configuration for 20 or 40 MHz cells:
```
echo o1 bwconfig 20 | nc -N 127.0.0.1 9090
echo o1 bwconfig 40 | nc -N 127.0.0.1 9090
```
The softmodem needs to be stopped; it will pick up the new configuration when
starting the softmodem again.
Use `o1 stats` to see which configurations are set by these commands for the
parameters `nrcelldu3gpp:ssbFrequency`, `nrcelldu3gpp:arfcnDL`,
`nrcelldu3gpp:arfcnUL`, `nrcelldu3gpp:bSChannelBwDL`,
`nrcelldu3gpp:bSChannelBwUL`, and `bwp3gpp:numberOfRBsbwp3gpp:startRB`.
Furthermore, for 20MHz, it *disables* three-quarter sampling, whereas it
*enables* three-quarter sampling for 40MHz.
# Restart the softmodem
Use `o1 stop_modem` to stop the `nr-softmodem`. To restart the softmodem, use
`o1 start_modem`:
```
echo o1 stop_modem | nc -N 127.0.0.1 9090
echo o1 start_modem | nc -N 127.0.0.1 9090
```
In fact, stopping terminates all L1 threads. It will be as if the softmodem
"freezes", and no periodical output of statistics will occur (the O1 telnet
interface will still work, though). Starting again will "defreeze" the
softmodem.
Upon restart, the DU sends a gNB-DU configuration update to the CU to inform it
about the updated configuration. Therefore, this also works in F1.
common/utils/telnetsrv/DOC/telnetsrv.md
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@@ -3,5 +3,6 @@ The oai embedded telnet server is an optional monitoring and debugging tool. It
* [Using the telnet server](telnetusage.md)
* [Adding commands to the oai telnet server](telnetaddcmd.md)
* [telnet server architecture ](telnetarch.md)
* [on the telnet O1 module](telneto1.md)
[oai Wikis home](https://gitlab.eurecom.fr/oai/openairinterface5g/wikis/home)
common/utils/telnetsrv/telnetsrv_o1.c
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@@ -0,0 +1,391 @@
/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
#include <sys/types.h>
#include <stdio.h>
#include <ctype.h>
#include <unistd.h>
#include <errno.h>
#include <math.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#define TELNETSERVERCODE
#include "telnetsrv.h"
#include "openair2/RRC/NR/nr_rrc_defs.h"
#include "openair2/LAYER2/NR_MAC_gNB/nr_mac_gNB.h"
#include "openair2/RRC/NR/nr_rrc_config.h"
#include "openair2/LAYER2/NR_MAC_gNB/mac_proto.h"
#include "openair2/LAYER2/nr_rlc/nr_rlc_oai_api.c"
#include "common/utils/nr/nr_common.h"
#define ERROR_MSG_RET(mSG, aRGS...) do { prnt("FAILURE: " mSG, ##aRGS); return 1; } while (0)
#define ISINITBWP "bwp3gpp:isInitialBwp"
//#define CYCLPREF "bwp3gpp:cyclicPrefix"
#define NUMRBS "bwp3gpp:numberOfRBs"
#define STARTRB "bwp3gpp:startRB"
#define BWPSCS "bwp3gpp:subCarrierSpacing"
#define SSBFREQ "nrcelldu3gpp:ssbFrequency"
#define ARFCNDL "nrcelldu3gpp:arfcnDL"
#define BWDL "nrcelldu3gpp:bSChannelBwDL"
#define ARFCNUL "nrcelldu3gpp:arfcnUL"
#define BWUL "nrcelldu3gpp:bSChannelBwUL"
#define PCI "nrcelldu3gpp:nRPCI"
#define TAC "nrcelldu3gpp:nRTAC"
#define MCC "nrcelldu3gpp:mcc"
#define MNC "nrcelldu3gpp:mnc"
#define SD "nrcelldu3gpp:sd"
#define SST "nrcelldu3gpp:sst"
typedef struct b {
long int dl;
long int ul;
} b_t;
typedef struct ue_stat {
rnti_t rnti;
b_t thr;
} ue_stat_t;
#define PRINTLIST_i(len, fmt, ...) \
{ \
for (int i = 0; i < len; ++i) { \
if (i != 0) prnt(", "); \
prnt(fmt, __VA_ARGS__); \
} \
} \
static int get_stats(char *buf, int debug, telnet_printfunc_t prnt)
{
if (buf)
ERROR_MSG_RET("no parameter allowed\n");
gNB_MAC_INST *mac = RC.nrmac[0];
AssertFatal(mac != NULL, "need MAC\n");
NR_SCHED_LOCK(&mac->sched_lock);
const f1ap_setup_req_t *sr = mac->f1_config.setup_req;
const f1ap_served_cell_info_t *cell_info = &sr->cell[0].info;
const NR_ServingCellConfigCommon_t *scc = mac->common_channels[0].ServingCellConfigCommon;
const NR_FrequencyInfoDL_t *frequencyInfoDL = scc->downlinkConfigCommon->frequencyInfoDL;
const NR_FrequencyInfoUL_t *frequencyInfoUL = scc->uplinkConfigCommon->frequencyInfoUL;
frame_type_t frame_type = get_frame_type(*frequencyInfoDL->frequencyBandList.list.array[0], *scc->ssbSubcarrierSpacing);
const NR_BWP_t *initialDL = &scc->downlinkConfigCommon->initialDownlinkBWP->genericParameters;
const NR_BWP_t *initialUL = &scc->uplinkConfigCommon->initialUplinkBWP->genericParameters;
int scs = initialDL->subcarrierSpacing;
AssertFatal(scs == initialUL->subcarrierSpacing, "different SCS for UL/DL not supported!\n");
int band = *frequencyInfoDL->frequencyBandList.list.array[0];
int nrb = frequencyInfoDL->scs_SpecificCarrierList.list.array[0]->carrierBandwidth;
AssertFatal(nrb == frequencyInfoUL->scs_SpecificCarrierList.list.array[0]->carrierBandwidth, "different BW for UL/DL not supported!\n");
frequency_range_t fr = band > 256 ? FR2 : FR1;
int bw_index = get_supported_band_index(scs, fr, nrb);
int bw_mhz = get_supported_bw_mhz(fr, bw_index);
const mac_stats_t *stat = &mac->mac_stats;
static mac_stats_t last = {0};
int diff_used = stat->used_prb_aggregate - last.used_prb_aggregate;
int diff_total = stat->total_prb_aggregate - last.total_prb_aggregate;
int load = diff_total > 0 ? 100 * diff_used / diff_total : 0;
last = *stat;
static struct timespec tp_last = {0};
struct timespec tp_now;
clock_gettime(CLOCK_MONOTONIC, &tp_now);
size_t diff_msec = (tp_now.tv_sec - tp_last.tv_sec) * 1000 + (tp_now.tv_nsec - tp_last.tv_nsec) / 1000000;
tp_last = tp_now;
const int srb_flag = 0;
const int rb_id = 1;
static b_t last_total[MAX_MOBILES_PER_GNB] = {0}; // TODO: hash table?
ue_stat_t ue_stat[MAX_MOBILES_PER_GNB] = {0};
int num_ues = 0;
UE_iterator((NR_UE_info_t **)mac->UE_info.list, it) {
nr_rlc_statistics_t rlc = {0};
nr_rlc_get_statistics(it->rnti, srb_flag, rb_id, &rlc);
b_t *lt = &last_total[num_ues];
ue_stat_t *ue_s = &ue_stat[num_ues];
ue_s->rnti = it->rnti;
// static var last_total: we might have old data, larger than what
// reports RLC, leading to a huge number -> cut off to zero
if (lt->dl > rlc.txpdu_bytes)
lt->dl = rlc.txpdu_bytes;
if (lt->ul > rlc.rxpdu_bytes)
lt->ul = rlc.rxpdu_bytes;
ue_s->thr.dl = (rlc.txpdu_bytes - lt->dl) * 8 / diff_msec;
ue_s->thr.ul = (rlc.rxpdu_bytes - lt->ul) * 8 / diff_msec;
lt->dl = rlc.txpdu_bytes;
lt->ul = rlc.rxpdu_bytes;
num_ues++;
}
prnt("{\n");
prnt(" \"o1-config\": {\n");
prnt(" \"BWP\": {\n");
prnt(" \"dl\": [{\n");
prnt(" \"" ISINITBWP "\": true,\n");
//prnt(" \"" CYCLPREF "\": %ld,\n", *initialDL->cyclicPrefix);
prnt(" \"" NUMRBS "\": %ld,\n", NRRIV2BW(initialDL->locationAndBandwidth, MAX_BWP_SIZE));
prnt(" \"" STARTRB "\": %ld,\n", NRRIV2PRBOFFSET(initialDL->locationAndBandwidth, MAX_BWP_SIZE));
prnt(" \"" BWPSCS "\": %ld\n", 15 * (1U << scs));
prnt(" }],\n");
prnt(" \"ul\": [{\n");
prnt(" \"" ISINITBWP "\": true,\n");
//prnt(" \"" CYCLPREF "\": %ld,\n", *initialUL->cyclicPrefix);
prnt(" \"" NUMRBS "\": %ld,\n", NRRIV2BW(initialUL->locationAndBandwidth, MAX_BWP_SIZE));
prnt(" \"" STARTRB "\": %ld,\n", NRRIV2PRBOFFSET(initialUL->locationAndBandwidth, MAX_BWP_SIZE));
prnt(" \"" BWPSCS "\": %ld\n", 15 * (1U << scs));
prnt(" }]\n");
prnt(" },\n");
prnt(" \"NRCELLDU\": {\n");
prnt(" \"" SSBFREQ "\": %ld,\n", *scc->downlinkConfigCommon->frequencyInfoDL->absoluteFrequencySSB);
prnt(" \"" ARFCNDL "\": %ld,\n", frequencyInfoDL->absoluteFrequencyPointA);
prnt(" \"" BWDL "\": %ld,\n", bw_mhz);
prnt(" \"" ARFCNUL "\": %ld,\n", frequencyInfoUL->absoluteFrequencyPointA ? *frequencyInfoUL->absoluteFrequencyPointA : frequencyInfoDL->absoluteFrequencyPointA);
prnt(" \"" BWUL "\": %ld,\n", bw_mhz);
prnt(" \"" PCI "\": %ld,\n", *scc->physCellId);
prnt(" \"" TAC "\": %ld,\n", *cell_info->tac);
prnt(" \"" MCC "\": \"%03d\",\n", cell_info->plmn.mcc);
prnt(" \"" MNC "\": \"%0*d\",\n", cell_info->plmn.mnc_digit_length, cell_info->plmn.mnc);
prnt(" \"" SD "\": %d,\n", cell_info->nssai[0].sd);
prnt(" \"" SST "\": %d\n", cell_info->nssai[0].sst);
prnt(" },\n");
prnt(" \"device\": {\n");
prnt(" \"gnbId\": %d,\n", sr->gNB_DU_id);
prnt(" \"gnbName\": \"%s\",\n", sr->gNB_DU_name);
prnt(" \"vendor\": \"OpenAirInterface\"\n");
prnt(" }\n");
prnt(" },\n");
prnt(" \"O1-Operational\": {\n");
prnt(" \"frame-type\": \"%s\",\n", frame_type == TDD ? "tdd" : "fdd");
prnt(" \"band-number\": %ld,\n", band);
prnt(" \"num-ues\": %d,\n", num_ues);
prnt(" \"ues\": ["); PRINTLIST_i(num_ues, "%d", ue_stat[i].rnti); prnt("],\n");
prnt(" \"load\": %d,\n", load);
prnt(" \"ues-thp\": [");
PRINTLIST_i(num_ues, "\n {\"rnti\": %d, \"dl\": %ld, \"ul\": %ld}", ue_stat[i].rnti, ue_stat[i].thr.dl, ue_stat[i].thr.ul);
prnt("\n ]\n");
prnt(" }\n");
prnt("}\n");
prnt("OK\n");
NR_SCHED_UNLOCK(&mac->sched_lock);
return 0;
}
static int read_long(const char *buf, const char *end, const char *id, long *val)
{
const char *curr = buf;
while (isspace(*curr) && curr < end) // skip leading spaces
curr++;
int len = strlen(id);
if (curr + len >= end)
return -1;
if (strncmp(curr, id, len) != 0) // check buf has id
return -1;
curr += len;
while (isspace(*curr) && curr < end) // skip middle spaces
curr++;
if (curr >= end)
return -1;
int nread = sscanf(curr, "%ld", val);
if (nread != 1)
return -1;
while (isdigit(*curr) && curr < end) // skip all digits read above
curr++;
if (curr > end)
return -1;
return curr - buf;
}
bool running = true; // in the beginning, the softmodem is started automatically
static int set_config(char *buf, int debug, telnet_printfunc_t prnt)
{
if (!buf)
ERROR_MSG_RET("need param: o1 config param1 val1 [param2 val2 ...]\n");
if (running)
ERROR_MSG_RET("cannot set parameters while L1 is running\n");
const char *end = buf + strlen(buf);
/* we need to update the following fields to change frequency and/or
* bandwidth:
* --gNBs.[0].servingCellConfigCommon.[0].absoluteFrequencySSB 620736 -> SSBFREQ
* --gNBs.[0].servingCellConfigCommon.[0].dl_absoluteFrequencyPointA 620020 -> ARFCNDL
* --gNBs.[0].servingCellConfigCommon.[0].dl_carrierBandwidth 51 -> BWDL
* --gNBs.[0].servingCellConfigCommon.[0].initialDLBWPlocationAndBandwidth 13750 -> NUMRBS + STARTRB
* --gNBs.[0].servingCellConfigCommon.[0].ul_carrierBandwidth 51 -> BWUL?
* --gNBs.[0].servingCellConfigCommon.[0].initialULBWPlocationAndBandwidth 13750 -> ?
*/
int processed = 0;
int pos = 0;
long ssbfreq;
processed = read_long(buf + pos, end, SSBFREQ, &ssbfreq);
if (processed < 0)
ERROR_MSG_RET("could not read " SSBFREQ " at index %d\n", pos + processed);
pos += processed;
prnt("setting " SSBFREQ ": %ld [len %d]\n", ssbfreq, pos);
long arfcn;
processed = read_long(buf + pos, end, ARFCNDL, &arfcn);
if (processed < 0)
ERROR_MSG_RET("could not read " ARFCNDL " at index %d\n", pos + processed);
pos += processed;
prnt("setting " ARFCNDL ": %ld [len %d]\n", arfcn, pos);
long bwdl;
processed = read_long(buf + pos, end, BWDL, &bwdl);
if (processed < 0)
ERROR_MSG_RET("could not read " BWDL " at index %d\n", pos + processed);
pos += processed;
prnt("setting " BWDL ": %ld [len %d]\n", bwdl, pos);
long numrbs;
processed = read_long(buf + pos, end, NUMRBS, &numrbs);
if (processed < 0)
ERROR_MSG_RET("could not read " NUMRBS " at index %d\n", pos + processed);
pos += processed;
prnt("setting " NUMRBS ": %ld [len %d]\n", numrbs, pos);
long startrb;
processed = read_long(buf + pos, end, STARTRB, &startrb);
if (processed < 0)
ERROR_MSG_RET("could not read " STARTRB " at index %d\n", pos + processed);
pos += processed;
prnt("setting " STARTRB ": %ld [len %d]\n", startrb, pos);
int locationAndBandwidth = PRBalloc_to_locationandbandwidth0(numrbs, startrb, MAX_BWP_SIZE);
prnt("inferred locationAndBandwidth: %d\n", locationAndBandwidth);
prnt("OK\n");
return 0;
}
static int set_bwconfig(char *buf, int debug, telnet_printfunc_t prnt)
{
if (running)
ERROR_MSG_RET("cannot set parameters while L1 is running\n");
if (!buf)
ERROR_MSG_RET("need param: o1 bwconfig <BW>\n");
char *end = NULL;
if (NULL != (end = strchr(buf, '\n')))
*end = 0;
if (NULL != (end = strchr(buf, '\r')))
*end = 0;
gNB_MAC_INST *mac = RC.nrmac[0];
NR_ServingCellConfigCommon_t *scc = mac->common_channels[0].ServingCellConfigCommon;
NR_FrequencyInfoDL_t *frequencyInfoDL = scc->downlinkConfigCommon->frequencyInfoDL;
NR_BWP_t *initialDL = &scc->downlinkConfigCommon->initialDownlinkBWP->genericParameters;
NR_FrequencyInfoUL_t *frequencyInfoUL = scc->uplinkConfigCommon->frequencyInfoUL;
NR_BWP_t *initialUL = &scc->uplinkConfigCommon->initialUplinkBWP->genericParameters;
if (strcmp(buf, "40") == 0) {
*scc->downlinkConfigCommon->frequencyInfoDL->absoluteFrequencySSB = 641280;
frequencyInfoDL->absoluteFrequencyPointA = 640008;
AssertFatal(frequencyInfoUL->absoluteFrequencyPointA == NULL, "only handle TDD\n");
frequencyInfoDL->scs_SpecificCarrierList.list.array[0]->carrierBandwidth = 106;
initialDL->locationAndBandwidth = 28875;
frequencyInfoUL->scs_SpecificCarrierList.list.array[0]->carrierBandwidth = 106;
initialUL->locationAndBandwidth = 28875;
get_softmodem_params()->threequarter_fs = 1;
} else if (strcmp(buf, "20") == 0) {
*scc->downlinkConfigCommon->frequencyInfoDL->absoluteFrequencySSB = 641280;
frequencyInfoDL->absoluteFrequencyPointA = 640596;
AssertFatal(frequencyInfoUL->absoluteFrequencyPointA == NULL, "only handle TDD\n");
frequencyInfoDL->scs_SpecificCarrierList.list.array[0]->carrierBandwidth = 51;
initialDL->locationAndBandwidth = 13750;
frequencyInfoUL->scs_SpecificCarrierList.list.array[0]->carrierBandwidth = 51;
initialUL->locationAndBandwidth = 13750;
get_softmodem_params()->threequarter_fs = 0;
} else {
ERROR_MSG_RET("unhandled option %s\n", buf);
}
free(RC.nrmac[0]->sched_ctrlCommon);
RC.nrmac[0]->sched_ctrlCommon = NULL;
free_MIB_NR(mac->common_channels[0].mib);
mac->common_channels[0].mib = get_new_MIB_NR(scc);
const f1ap_served_cell_info_t *info = &mac->f1_config.setup_req->cell[0].info;
nr_mac_configure_sib1(mac, &info->plmn, info->nr_cellid, *info->tac);
prnt("OK\n");
return 0;
}
extern int stop_L1(module_id_t gnb_id);
static int stop_modem(char *buf, int debug, telnet_printfunc_t prnt)
{
if (!running)
ERROR_MSG_RET("cannot stop, nr-softmodem not running\n");
/* make UEs out of sync and wait 50ms to ensure no PUCCH is scheduled. After
* a restart, the frame/slot numbers will be different, which "confuses" the
* scheduler, which has many PUCCH structures filled with expected frame/slot
* combinations that won't happen. */
const gNB_MAC_INST *mac = RC.nrmac[0];
UE_iterator((NR_UE_info_t **)mac->UE_info.list, it) {
nr_mac_trigger_ul_failure(&it->UE_sched_ctrl, 1);
}
usleep(50000);
stop_L1(0);
running = false;
prnt("OK\n");
return 0;
}
extern int start_L1L2(module_id_t gnb_id);
static int start_modem(char *buf, int debug, telnet_printfunc_t prnt)
{
if (running)
ERROR_MSG_RET("cannot start, nr-softmodem already running\n");
start_L1L2(0);
running = true;
prnt("OK\n");
return 0;
}
static telnetshell_cmddef_t o1cmds[] = {
{"stats", "", get_stats},
{"config", "[]", set_config},
{"bwconfig", "", set_bwconfig},
{"stop_modem", "", stop_modem},
{"start_modem", "", start_modem},
{"", "", NULL},
};
static telnetshell_vardef_t o1vars[] = {
{"", 0, 0, NULL}
};
void add_o1_cmds(void) {
add_telnetcmd("o1", o1vars, o1cmds);
}