mirror of https://github.com/PentHertz/srsLTE.git
rlc: extend stress tester to simulate MAC PDU corruption
This commit is contained in:
Andre Puschmann
parent
ecb6a0f99b
commit
701db61fde
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@ -19,19 +19,20 @@
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*
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*/
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#include <iostream>
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#include <cstdlib>
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#include <pthread.h>
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#include "srslte/common/crash_handler.h"
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#include "srslte/common/log_filter.h"
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#include "srslte/common/logger_stdout.h"
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#include "srslte/common/threads.h"
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#include "srslte/common/rlc_pcap.h"
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#include "srslte/common/threads.h"
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#include "srslte/upper/rlc.h"
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#include <boost/program_options.hpp>
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#include <boost/program_options/parsers.hpp>
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#include <cassert>
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#include <cstdlib>
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#include <iostream>
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#include <pthread.h>
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#include <random>
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#include <srslte/upper/rlc_interface.h>
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#include "srslte/common/crash_handler.h"
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#define LOG_HEX_LIMIT (-1)
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@ -44,7 +45,8 @@ typedef struct {
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std::string mode;
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uint32_t sdu_size;
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uint32_t test_duration_sec;
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float error_rate;
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float pdu_drop_rate;
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float pdu_cut_rate;
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uint32_t sdu_gen_delay_usec;
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uint32_t pdu_tx_delay_usec;
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bool reestablish;
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@ -54,6 +56,7 @@ typedef struct {
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uint32_t avg_opp_size;
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bool random_opp;
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bool zero_seed;
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bool pedantic_sdu_check;
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} stress_test_args_t;
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void parse_args(stress_test_args_t *args, int argc, char *argv[]) {
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@ -65,6 +68,8 @@ void parse_args(stress_test_args_t *args, int argc, char *argv[]) {
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("help,h", "Produce help message")
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("version,v", "Print version information and exit");
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// clang-format off
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// Command line or config file options
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bpo::options_description common("Configuration options");
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common.add_options()
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@ -75,12 +80,15 @@ void parse_args(stress_test_args_t *args, int argc, char *argv[]) {
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("random_opp", bpo::value<bool>(&args->random_opp)->default_value(true), "Whether to generate random MAC opportunities")
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("sdu_gen_delay", bpo::value<uint32_t>(&args->sdu_gen_delay_usec)->default_value(0), "SDU generation delay (usec)")
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("pdu_tx_delay", bpo::value<uint32_t>(&args->pdu_tx_delay_usec)->default_value(0), "Delay in MAC for transfering PDU from tx'ing RLC to rx'ing RLC (usec)")
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("error_rate", bpo::value<float>(&args->error_rate)->default_value(0.1), "Rate at which RLC PDUs are dropped")
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("pdu_drop_rate", bpo::value<float>(&args->pdu_drop_rate)->default_value(0.1), "Rate at which RLC PDUs are dropped")
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("pdu_cut_rate", bpo::value<float>(&args->pdu_cut_rate)->default_value(0.0), "Rate at which RLC PDUs are chopped in length")
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("reestablish", bpo::value<bool>(&args->reestablish)->default_value(false), "Mimic RLC reestablish during execution")
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("loglevel", bpo::value<uint32_t>(&args->log_level)->default_value(srslte::LOG_LEVEL_DEBUG), "Log level (1=Error,2=Warning,3=Info,4=Debug)")
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("singletx", bpo::value<bool>(&args->single_tx)->default_value(false), "If set to true, only one node is generating data")
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("pcap", bpo::value<bool>(&args->write_pcap)->default_value(false), "Whether to write all RLC PDU to PCAP file")
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("zeroseed", bpo::value<bool>(&args->zero_seed)->default_value(false), "Whether to initialize random seed to zero");
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("zeroseed", bpo::value<bool>(&args->zero_seed)->default_value(false), "Whether to initialize random seed to zero")
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("pedantic", bpo::value<bool>(&args->pedantic_sdu_check)->default_value(false), "Whether to check SDU length and exit on error");
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// clang-format on
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// these options are allowed on the command line
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bpo::options_description cmdline_options;
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@ -136,7 +144,8 @@ public:
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lcid(lcid_),
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stack(stack_),
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log("MAC "),
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thread("MAC_DUMMY")
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thread("MAC_DUMMY"),
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real_dist(0.0, 1.0)
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{
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log.set_level(static_cast<LOG_LEVEL_ENUM>(args.log_level));
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log.set_hex_limit(LOG_HEX_LIMIT);
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@ -160,7 +169,7 @@ private:
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float factor = 1.0;
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if (args.random_opp) {
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factor = 0.5 + static_cast<float>(rand())/RAND_MAX;
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factor = 0.5 + real_dist(mt19937);
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}
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int opp_size = args.avg_opp_size * factor;
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uint32_t buf_state = tx_rlc->get_buffer_state(lcid);
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@ -170,12 +179,18 @@ private:
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if (args.pdu_tx_delay_usec > 0) {
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usleep(args.pdu_tx_delay_usec);
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}
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if(((float)rand()/RAND_MAX > args.error_rate) && read>0) {
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rx_rlc->write_pdu(lcid, pdu->msg, pdu->N_bytes);
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if ((real_dist(mt19937) > args.pdu_drop_rate) && read > 0) {
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uint32_t pdu_len = pdu->N_bytes;
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if ((real_dist(mt19937) > 0.1) && args.pdu_cut_rate) {
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int cut_pdu_len = pdu_len * real_dist(mt19937);
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log.info("Cutting MAC PDU len (%d B > %d B)\n", pdu_len, cut_pdu_len);
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pdu_len = cut_pdu_len;
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}
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rx_rlc->write_pdu(lcid, pdu->msg, pdu_len);
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if (is_dl) {
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pcap->write_dl_am_ccch(pdu->msg, pdu->N_bytes);
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pcap->write_dl_am_ccch(pdu->msg, pdu_len);
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} else {
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pcap->write_ul_am_ccch(pdu->msg, pdu->N_bytes);
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pcap->write_ul_am_ccch(pdu->msg, pdu_len);
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}
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} else {
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log.warning_hex(pdu->msg, pdu->N_bytes, "Dropping RLC PDU (%d B)\n", pdu->N_bytes);
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@ -206,6 +221,9 @@ private:
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uint32_t lcid;
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srslte::log_filter log;
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stack_dummy* stack = nullptr;
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std::mt19937 mt19937;
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std::uniform_real_distribution<float> real_dist;
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};
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@ -241,7 +259,9 @@ public:
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assert(rx_lcid == lcid);
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if (sdu->N_bytes != args.sdu_size) {
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log.error_hex(sdu->msg, sdu->N_bytes, "Received SDU with size %d, expected %d.\n", sdu->N_bytes, args.sdu_size);
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exit(-1);
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if (args.pedantic_sdu_check) {
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exit(-1);
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}
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}
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rx_pdus++;
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