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srsLTE
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expos various params of stress tester and add pcap functionality

This commit is contained in:
Andre Puschmann 2018-03-23 17:20:12 +01:00
parent e7c74fa0f7
commit 20fa7b947d
1 changed files with 64 additions and 16 deletions
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80
lib/test/upper/rlc_am_stress_test.cc
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@ -30,10 +30,14 @@
#include "srslte/common/log_filter.h"
#include "srslte/common/logger_stdout.h"
#include "srslte/common/threads.h"
#include "srslte/common/rlc_pcap.h"
#include "srslte/upper/rlc.h"
#include <boost/program_options.hpp>
#include <boost/program_options/parsers.hpp>
#include <assert.h>
#include <boost/thread.hpp>
#define SDU_SIZE 1500
using namespace std;
using namespace srsue;
@ -47,8 +51,13 @@ typedef struct {
uint32_t pdu_tx_delay_usec;
bool reestablish;
uint32_t log_level;
bool single_tx;
bool write_pcap;
float opp_sdu_ratio;
} stress_test_args_t;
boost::mutex mutex;
void parse_args(stress_test_args_t *args, int argc, char *argv[]) {
// Command line only options
@ -65,8 +74,11 @@ void parse_args(stress_test_args_t *args, int argc, char *argv[]) {
("sdu_gen_delay", bpo::value<uint32_t>(&args->sdu_gen_delay_usec)->default_value(10), "SDU generation delay (usec)")
("pdu_tx_delay", bpo::value<uint32_t>(&args->pdu_tx_delay_usec)->default_value(10), "Delay in MAC for transfering PDU from tx'ing RLC to rx'ing RLC (usec)")
("error_rate", bpo::value<float>(&args->error_rate)->default_value(0.1), "Rate at which RLC PDUs are dropped")
("opp_sdu_ratio", bpo::value<float>(&args->opp_sdu_ratio)->default_value(0.0), "Ratio between MAC opportunity and SDU size (0==random)")
("reestablish", bpo::value<bool>(&args->reestablish)->default_value(false), "Mimic RLC reestablish during execution")
("loglevel", bpo::value<uint32_t>(&args->log_level)->default_value(srslte::LOG_LEVEL_DEBUG), "Log level (1=Error,2=Warning,3=Info,4=Debug");
("loglevel", bpo::value<uint32_t>(&args->log_level)->default_value(srslte::LOG_LEVEL_DEBUG), "Log level (1=Error,2=Warning,3=Info,4=Debug)")
("singletx", bpo::value<bool>(&args->single_tx)->default_value(false), "If set to true, only one node is generating data")
("pcap", bpo::value<bool>(&args->write_pcap)->default_value(false), "Whether to write all RLC PDU to PCAP file");
// these options are allowed on the command line
bpo::options_description cmdline_options;
@ -94,14 +106,17 @@ class mac_reader
:public thread
{
public:
mac_reader(rlc_interface_mac *rlc1_, rlc_interface_mac *rlc2_, float fail_rate_, uint32_t pdu_tx_delay_usec_)
mac_reader(rlc_interface_mac *rlc1_, rlc_interface_mac *rlc2_, float fail_rate_, float opp_sdu_ratio_, uint32_t pdu_tx_delay_usec_, rlc_pcap *pcap_, bool is_dl_ = true)
{
rlc1 = rlc1_;
rlc2 = rlc2_;
fail_rate = fail_rate_;
opp_sdu_ratio = opp_sdu_ratio_;
run_enable = true;
running = false;
pdu_tx_delay_usec = pdu_tx_delay_usec_;
pcap = pcap_;
is_dl = is_dl_;
}
void stop()
@ -129,14 +144,25 @@ private:
}
while(run_enable) {
float r = (float)rand()/RAND_MAX;
int opp_size = r*1500;
rlc1->get_buffer_state(1);
int read = rlc1->read_pdu(1, pdu->msg, opp_size);
if(((float)rand()/RAND_MAX > fail_rate) && read>0) {
rlc2->write_pdu(1, pdu->msg, opp_size);
// generate MAC opportunities of random size or with fixed ratio
float r = opp_sdu_ratio ? opp_sdu_ratio : (float)rand()/RAND_MAX;
int opp_size = r*SDU_SIZE;
mutex.lock();
uint32_t buf_state = rlc1->get_buffer_state(1);
if (buf_state) {
int read = rlc1->read_pdu(1, pdu->msg, opp_size);
usleep(pdu_tx_delay_usec);
if(((float)rand()/RAND_MAX > fail_rate) && read>0) {
pdu->N_bytes = read;
rlc2->write_pdu(1, pdu->msg, pdu->N_bytes);
if (is_dl) {
pcap->write_dl_am_ccch(pdu->msg, pdu->N_bytes);
} else {
pcap->write_ul_am_ccch(pdu->msg, pdu->N_bytes);
}
}
}
usleep(pdu_tx_delay_usec);
mutex.unlock();
}
running = false;
byte_buffer_pool::get_instance()->deallocate(pdu);
@ -145,7 +171,10 @@ private:
rlc_interface_mac *rlc1;
rlc_interface_mac *rlc2;
float fail_rate;
float opp_sdu_ratio;
uint32_t pdu_tx_delay_usec;
rlc_pcap *pcap;
bool is_dl;
bool run_enable;
bool running;
@ -155,9 +184,9 @@ class mac_dummy
:public srslte::mac_interface_timers
{
public:
mac_dummy(rlc_interface_mac *rlc1_, rlc_interface_mac *rlc2_, float fail_rate_, uint32_t pdu_tx_delay)
:r1(rlc1_, rlc2_, fail_rate_, pdu_tx_delay)
,r2(rlc2_, rlc1_, fail_rate_, pdu_tx_delay)
mac_dummy(rlc_interface_mac *rlc1_, rlc_interface_mac *rlc2_, float fail_rate_, float opp_sdu_ratio_, int32_t pdu_tx_delay, rlc_pcap* pcap = NULL)
:r1(rlc1_, rlc2_, fail_rate_, opp_sdu_ratio_, pdu_tx_delay, pcap, true)
,r2(rlc2_, rlc1_, fail_rate_, opp_sdu_ratio_, pdu_tx_delay, pcap, false)
{
}
@ -222,6 +251,7 @@ public:
void write_pdu(uint32_t lcid, byte_buffer_t *sdu)
{
assert(lcid == 1);
assert(sdu->N_bytes==SDU_SIZE);
byte_buffer_pool::get_instance()->deallocate(sdu);
std::cout << "rlc_am_tester " << name << " received " << rx_pdus++ << " PDUs" << std::endl;
}
@ -244,8 +274,11 @@ private:
printf("Fatal Error: Could not allocate PDU in rlc_am_tester::run_thread\n");
exit(-1);
}
pdu->N_bytes = 1500;
pdu->msg[0] = sn++;
for (uint32_t i = 0; i < SDU_SIZE; i++) {
pdu->msg[i] = sn;
}
sn++;
pdu->N_bytes = SDU_SIZE;
rlc->write_sdu(1, pdu);
usleep(sdu_gen_delay_usec);
}
@ -271,13 +304,18 @@ void stress_test(stress_test_args_t args)
log2.set_level((LOG_LEVEL_ENUM)args.log_level);
log1.set_hex_limit(-1);
log2.set_hex_limit(-1);
rlc_pcap pcap;
if (args.write_pcap) {
pcap.open("rlc_stress_test.pcap", 0);
}
rlc rlc1;
rlc rlc2;
rlc_am_tester tester1(&rlc1, "tester1", args.sdu_gen_delay_usec);
rlc_am_tester tester2(&rlc2, "tester2", args.sdu_gen_delay_usec);
mac_dummy mac(&rlc1, &rlc2, args.error_rate, args.pdu_tx_delay_usec);
mac_dummy mac(&rlc1, &rlc2, args.error_rate, args.opp_sdu_ratio, args.pdu_tx_delay_usec, &pcap);
ue_interface ue;
rlc1.init(&tester1, &tester1, &ue, &log1, &mac, 0);
@ -298,14 +336,21 @@ void stress_test(stress_test_args_t args)
rlc2.add_bearer(1, cnfg_);
tester1.start(7);
tester2.start(7);
if (!args.single_tx) {
tester2.start(7);
}
mac.start();
for (uint32_t i = 0; i < args.test_duration_sec; i++) {
// if enabled, mimic reestablishment every second
if (args.reestablish) {
// lock mutex during reestablish to prevent a RLC PDU that is already been transmitted before
// resetting the tx'ing RLC entity, but not yet received before resetting the
// rx'ing RLC entity to screw the test
mutex.lock();
rlc1.reestablish();
rlc2.reestablish();
mutex.unlock();
}
usleep(1e6);
}
@ -313,6 +358,9 @@ void stress_test(stress_test_args_t args)
tester1.stop();
tester2.stop();
mac.stop();
if (args.write_pcap) {
pcap.close();
}
}