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speed_tests.c
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speed_tests.c
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/*
* License: MIT
*
* Copyright (c) 2012-2018 James Bensley.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*
* File: Speed Tests
*
*/
#include "speed_tests.h"
void speed_test_prep(struct etherate *eth)
{
build_tlv(ð->frm, htons(TYPE_TESTFRAME), htonl(VALUE_TEST_SUB_TLV));
// By default test until F_DURATION_DEF has passed
eth->speed_test.testMax = (uint64_t*)ð->params.f_duration;
eth->speed_test.testBase = (uint64_t*)ð->params.s_elapsed;
if (eth->params.f_bytes > 0) ///// Move all this recuring code to a parent function
{
// Testing until N bytes sent
eth->speed_test.testMax = ð->params.f_bytes;
eth->speed_test.testBase = ð->speed_test.b_tx;
} else if (eth->params.f_count > 0) {
// Testing until N frames sent
eth->speed_test.testMax = ð->params.f_count;
eth->speed_test.testBase = ð->params.f_tx_count;
} else if (eth->params.f_duration > 0) {
// Testing until N seconds have passed
eth->params.f_duration -= 1;
}
if (eth->app.tx_mode == true)
{
printf("Seconds\t\tMbps Tx\t\tMBs Tx\t\tFrmTx/s\t\tFrames Tx\n");
if (eth->speed_test.b_tx_speed_max != B_TX_SPEED_MAX_DEF) {
speed_test_bps(eth);
} else if (eth->params.f_tx_count_max != F_TX_COUNT_MAX_DEF) {
speed_test_fps(eth);
} else if (eth->params.f_tx_dly != F_TX_DLY_DEF) {
speed_test_pacing(eth);
} else {
speed_test_full(eth);
}
// Else, Rx mode
} else {
printf("Seconds\t\tMbps Rx\t\tMBs Rx\t\tFrmRx/s\t\tFrames Rx\n");
speed_test_rx(eth);
}
if (eth->params.s_elapsed > 0)
{
eth->speed_test.b_speed_avg = (eth->speed_test.b_speed_avg / eth->params.s_elapsed);
eth->speed_test.f_speed_avg = (eth->speed_test.f_speed_avg / eth->params.s_elapsed);
}
printf("Speed test complete\n");
speed_test_results(eth);
}
void speed_test_bps(struct etherate *eth)
{
int16_t tx_ret = 0;
int16_t rx_len = 0;
// Get clock times for the speed limit restriction and starting time
clock_gettime(CLOCK_MONOTONIC_RAW, ð->params.elapsed_time);
// Tx test loop
while (*eth->speed_test.testBase <= *eth->speed_test.testMax)
{
clock_gettime(CLOCK_MONOTONIC_RAW, ð->params.current_time);
// One second has passed
if ((eth->params.current_time.tv_sec - eth->params.elapsed_time.tv_sec) >= 1)
{
eth->params.s_elapsed += 1;
eth->speed_test.b_speed = (((double)eth->speed_test.b_tx-eth->speed_test.b_tx_prev) * 8) / 1000 / 1000;
eth->speed_test.b_tx_prev = eth->speed_test.b_tx;
eth->speed_test.f_speed = (eth->params.f_tx_count - eth->params.f_tx_count_prev);
eth->params.f_tx_count_prev = eth->params.f_tx_count;
printf("%" PRIu64 "\t\t%.2f\t\t%" PRIu64 "\t\t%" PRIu64"\t\t%" PRIu64 "\n",
eth->params.s_elapsed,
eth->speed_test.b_speed,
(eth->speed_test.b_tx / 1024) / 1024,
(eth->speed_test.f_speed),
eth->params.f_tx_count);
if (eth->speed_test.b_speed > eth->speed_test.b_speed_max)
eth->speed_test.b_speed_max = eth->speed_test.b_speed;
if (eth->speed_test.f_speed > eth->speed_test.f_speed_max)
eth->speed_test.f_speed_max = eth->speed_test.f_speed;
eth->speed_test.b_speed_avg += eth->speed_test.b_speed;
eth->speed_test.f_speed_avg += eth->speed_test.f_speed;
eth->params.elapsed_time.tv_sec = eth->params.current_time.tv_sec;
eth->params.elapsed_time.tv_nsec = eth->params.current_time.tv_nsec;
eth->speed_test.b_tx_speed_prev = 0;
} else {
// Poll has been disabled in favour of a non-blocking recv (for now)
rx_len = recv(eth->intf.sock_fd, eth->frm.rx_buffer,
eth->params.f_size_total, MSG_DONTWAIT);
if (rx_len > 0) {
// Running in ACK mode
if (eth->params.f_ack)
{
if (ntohl(*eth->frm.rx_tlv_value) == VALUE_TEST_SUB_TLV &&
ntohs(*eth->frm.rx_sub_tlv_type) == TYPE_ACKINDEX)
{
eth->params.f_rx_count += 1;
eth->params.f_waiting_ack = false;
// Record if the frame is in-order, early or late
if (likely(ntohll(*eth->frm.rx_sub_tlv_value) == eth->params.f_rx_count)) {
eth->params.f_rx_ontime += 1;
} else if (ntohll(*eth->frm.rx_sub_tlv_value) > eth->params.f_rx_count) {
eth->params.f_rx_early += 1;
} else if (ntohll(*eth->frm.rx_sub_tlv_value) < eth->params.f_rx_count) {
eth->params.f_rx_late += 1;
}
} else if (ntohs(*eth->frm.rx_tlv_type) == TYPE_APPLICATION &&
ntohl(*eth->frm.rx_tlv_value) == VALUE_DYINGGASP) {
printf("\nRx host has quit\n");
speed_test_results(eth);
return;
// Received a non-test frame
} else {
eth->params.f_rx_other += 1;
}
// Not running in ACK mode
} else if (ntohs(*eth->frm.rx_tlv_type) == TYPE_APPLICATION &&
ntohll(*eth->frm.rx_tlv_value) == VALUE_DYINGGASP) {
printf("\nRx host has quit\n");
speed_test_results(eth);
return;
// Received a non-test frame
} else {
eth->params.f_rx_other += 1;
}
} else { // rx_len <= 0
if (errno != EAGAIN || errno != EWOULDBLOCK)
perror("Speed test Rx error ");
}
// If it hasn't been 1 second yet, send more test frames
if (eth->params.f_waiting_ack == false)
{
// Check if sending another frame exceeds the max speed configured
if ((eth->speed_test.b_tx_speed_prev + eth->params.f_size_total) <= eth->speed_test.b_tx_speed_max)
{
build_sub_tlv(ð->frm, htons(TYPE_FRAMEINDEX),
htonll(eth->params.f_tx_count+1));
tx_ret = send(eth->intf.sock_fd,
eth->frm.tx_buffer,
eth->params.f_size_total,
MSG_DONTWAIT);
if (tx_ret > 0)
{
eth->params.f_tx_count += 1;
eth->speed_test.b_tx += eth->params.f_size_total;
eth->speed_test.b_tx_speed_prev += eth->params.f_size_total;
if (eth->params.f_ack) eth->params.f_waiting_ack = true;
} else {
if (errno != EAGAIN || errno != EWOULDBLOCK)
{
perror("Speed test Tx error ");
return;
}
}
}
}
} // End of current_time.tv_sec - ts_elapsed_TIME.tv_sec
} // *testBase<=*testMax
}
void speed_test_fps(struct etherate *eth)
{
int16_t tx_ret = 0;
int16_t rx_len = 0;
// Get clock times for the speed limit restriction and starting time
clock_gettime(CLOCK_MONOTONIC_RAW, ð->params.elapsed_time);
// Tx test loop
while (*eth->speed_test.testBase <= *eth->speed_test.testMax)
{
clock_gettime(CLOCK_MONOTONIC_RAW, ð->params.current_time);
// One second has passed
if ((eth->params.current_time.tv_sec - eth->params.elapsed_time.tv_sec) >= 1)
{
eth->params.s_elapsed += 1;
eth->speed_test.b_speed = (((double)eth->speed_test.b_tx-eth->speed_test.b_tx_prev) * 8) / 1000 / 1000;
eth->speed_test.b_tx_prev = eth->speed_test.b_tx;
eth->speed_test.f_speed = (eth->params.f_tx_count - eth->params.f_tx_count_prev);
eth->params.f_tx_count_prev = eth->params.f_tx_count;
printf("%" PRIu64 "\t\t%.2f\t\t%" PRIu64 "\t\t%" PRIu64"\t\t%" PRIu64 "\n",
eth->params.s_elapsed,
eth->speed_test.b_speed,
(eth->speed_test.b_tx / 1024) / 1024,
(eth->speed_test.f_speed),
eth->params.f_tx_count);
if (eth->speed_test.b_speed > eth->speed_test.b_speed_max)
eth->speed_test.b_speed_max = eth->speed_test.b_speed;
if (eth->speed_test.f_speed > eth->speed_test.f_speed_max)
eth->speed_test.f_speed_max = eth->speed_test.f_speed;
eth->speed_test.b_speed_avg += eth->speed_test.b_speed;
eth->speed_test.f_speed_avg += eth->speed_test.f_speed;
eth->params.elapsed_time.tv_sec = eth->params.current_time.tv_sec;
eth->params.elapsed_time.tv_nsec = eth->params.current_time.tv_nsec;
eth->speed_test.b_tx_speed_prev = 0;
} else {
// Poll has been disabled in favour of a non-blocking recv (for now)
rx_len = recv(eth->intf.sock_fd, eth->frm.rx_buffer,
eth->params.f_size_total, MSG_DONTWAIT);
if (rx_len > 0) {
// Running in ACK mode
if (eth->params.f_ack)
{
if (ntohl(*eth->frm.rx_tlv_value) == VALUE_TEST_SUB_TLV &&
ntohs(*eth->frm.rx_sub_tlv_type) == TYPE_ACKINDEX)
{
eth->params.f_rx_count += 1;
eth->params.f_waiting_ack = false;
// Record if the frame is in-order, early or late
if (likely(ntohll(*eth->frm.rx_sub_tlv_value) == eth->params.f_rx_count)) {
eth->params.f_rx_ontime += 1;
} else if (ntohll(*eth->frm.rx_sub_tlv_value) > eth->params.f_rx_count) {
eth->params.f_rx_early += 1;
} else if (ntohll(*eth->frm.rx_sub_tlv_value) < eth->params.f_rx_count) {
eth->params.f_rx_late += 1;
}
} else if (ntohs(*eth->frm.rx_tlv_type) == TYPE_APPLICATION &&
ntohl(*eth->frm.rx_tlv_value) == VALUE_DYINGGASP) {
printf("\nRx host has quit\n");
speed_test_results(eth);
return;
// Received a non-test frame
} else {
eth->params.f_rx_other += 1;
}
// Not running in ACK mode
} else if (ntohs(*eth->frm.rx_tlv_type) == TYPE_APPLICATION &&
ntohll(*eth->frm.rx_tlv_value) == VALUE_DYINGGASP) {
printf("\nRx host has quit\n");
speed_test_results(eth);
return;
// Received a non-test frame
} else {
eth->params.f_rx_other += 1;
}
} else { // rx_len <= 0
if (errno != EAGAIN || errno != EWOULDBLOCK)
perror("Speed test Rx error ");
}
// If it hasn't been 1 second yet, send more test frames
if (eth->params.f_waiting_ack == false)
{
// Check if sending another frame exceeds the max frame rate configured
if (eth->params.f_tx_count - eth->params.f_tx_count_prev < eth->params.f_tx_count_max)
{
build_sub_tlv(ð->frm, htons(TYPE_FRAMEINDEX),
htonll(eth->params.f_tx_count+1));
tx_ret = send(eth->intf.sock_fd,
eth->frm.tx_buffer,
eth->params.f_size_total,
MSG_DONTWAIT);
if (tx_ret > 0)
{
eth->params.f_tx_count += 1;
eth->speed_test.b_tx += eth->params.f_size_total;
eth->speed_test.b_tx_speed_prev += eth->params.f_size_total;
if (eth->params.f_ack) eth->params.f_waiting_ack = true;
} else {
if (errno != EAGAIN || errno != EWOULDBLOCK)
{
perror("Speed test Tx error ");
return;
}
}
}
}
} // End of current_time.tv_sec - ts_elapsed_TIME.tv_sec
} // *testBase<=*testMax
}
void speed_test_full(struct etherate *eth)
{
int16_t tx_ret = 0;
int16_t rx_len = 0;
// Call this once to set up the subTLV
build_sub_tlv(ð->frm, htons(TYPE_FRAMEINDEX), 0);
// Get clock times for the speed limit restriction and starting time
clock_gettime(CLOCK_MONOTONIC_RAW, ð->params.elapsed_time);
// Tx test loop
while (*eth->speed_test.testBase <= *eth->speed_test.testMax)
{
clock_gettime(CLOCK_MONOTONIC_RAW, ð->params.current_time);
// One second has passed
if ((eth->params.current_time.tv_sec - eth->params.elapsed_time.tv_sec) >= 1)
{
eth->params.s_elapsed += 1;
eth->speed_test.b_speed = (((double)eth->speed_test.b_tx-eth->speed_test.b_tx_prev) * 8) / 1000 / 1000;
eth->speed_test.b_tx_prev = eth->speed_test.b_tx;
eth->speed_test.f_speed = (eth->params.f_tx_count - eth->params.f_tx_count_prev);
eth->params.f_tx_count_prev = eth->params.f_tx_count;
printf("%" PRIu64 "\t\t%.2f\t\t%" PRIu64 "\t\t%" PRIu64"\t\t%" PRIu64 "\n",
eth->params.s_elapsed,
eth->speed_test.b_speed,
(eth->speed_test.b_tx / 1024) / 1024,
(eth->speed_test.f_speed),
eth->params.f_tx_count);
if (eth->speed_test.b_speed > eth->speed_test.b_speed_max)
eth->speed_test.b_speed_max = eth->speed_test.b_speed;
if (eth->speed_test.f_speed > eth->speed_test.f_speed_max)
eth->speed_test.f_speed_max = eth->speed_test.f_speed;
eth->speed_test.b_speed_avg += eth->speed_test.b_speed;
eth->speed_test.f_speed_avg += eth->speed_test.f_speed;
eth->params.elapsed_time.tv_sec = eth->params.current_time.tv_sec;
eth->params.elapsed_time.tv_nsec = eth->params.current_time.tv_nsec;
eth->speed_test.b_tx_speed_prev = 0;
} else {
// Poll has been disabled in favour of a non-blocking recv (for now)
rx_len = recv(eth->intf.sock_fd, eth->frm.rx_buffer,
eth->params.f_size_total, MSG_DONTWAIT);
if (rx_len > 0) {
// Running in ACK mode
if (eth->params.f_ack)
{
if (ntohl(*eth->frm.rx_tlv_value) == VALUE_TEST_SUB_TLV &&
ntohs(*eth->frm.rx_sub_tlv_type) == TYPE_ACKINDEX)
{
eth->params.f_rx_count += 1;
eth->params.f_waiting_ack = false;
// Record if the frame is in-order, early or late
if (likely(ntohll(*eth->frm.rx_sub_tlv_value) == eth->params.f_rx_count)) {
eth->params.f_rx_ontime += 1;
} else if (ntohll(*eth->frm.rx_sub_tlv_value) > eth->params.f_rx_count) {
eth->params.f_rx_early += 1;
} else if (ntohll(*eth->frm.rx_sub_tlv_value) < eth->params.f_rx_count) {
eth->params.f_rx_late += 1;
}
} else if (ntohs(*eth->frm.rx_tlv_type) == TYPE_APPLICATION &&
ntohl(*eth->frm.rx_tlv_value) == VALUE_DYINGGASP) {
printf("\nRx host has quit\n");
speed_test_results(eth);
return;
// Received a non-test frame
} else {
eth->params.f_rx_other += 1;
}
// Not running in ACK mode
} else if (ntohs(*eth->frm.rx_tlv_type) == TYPE_APPLICATION &&
ntohll(*eth->frm.rx_tlv_value) == VALUE_DYINGGASP) {
printf("\nRx host has quit\n");
speed_test_results(eth);
return;
// Received a non-test frame
} else {
eth->params.f_rx_other += 1;
}
} else { // rx_len <= 0
if (errno != EAGAIN || errno != EWOULDBLOCK)
perror("Speed test Rx error ");
}
// If it hasn't been 1 second yet, send more test frames
if (eth->params.f_waiting_ack == false)
{
////// Speed up this packet update?
build_sub_tlv(ð->frm, htons(TYPE_FRAMEINDEX),
htonll(eth->params.f_tx_count+1));
tx_ret = send(eth->intf.sock_fd,
eth->frm.tx_buffer,
eth->params.f_size_total,
MSG_DONTWAIT);
if (tx_ret > 0)
{
eth->params.f_tx_count += 1;
eth->speed_test.b_tx += eth->params.f_size_total;
eth->speed_test.b_tx_speed_prev += eth->params.f_size_total;
if (eth->params.f_ack) eth->params.f_waiting_ack = true;
} else {
if (errno != EAGAIN || errno != EWOULDBLOCK)
{
perror("Speed test Tx error ");
return;
}
}
}
} // End of current_time.tv_sec - ts_elapsed_TIME.tv_sec
} // *testBase<=*testMax
}
void speed_test_pacing(struct etherate *eth)
{
int16_t tx_ret = 0;
int16_t rx_len = 0;
long double current_time = 0.0;
long double last_tx = 0.0;
// Get clock times for the speed limit restriction and starting time
clock_gettime(CLOCK_MONOTONIC_RAW, ð->params.elapsed_time);
// Initialise the "last tx interval" for the frame pacing feature before
// current_time to ensure the first check of "time since last tx" passes
clock_gettime(CLOCK_MONOTONIC_RAW, ð->params.last_tx);
// Tx test loop
while (*eth->speed_test.testBase <= *eth->speed_test.testMax)
{
clock_gettime(CLOCK_MONOTONIC_RAW, ð->params.current_time);
// One second has passed
if ((eth->params.current_time.tv_sec - eth->params.elapsed_time.tv_sec) >= 1)
{
eth->params.s_elapsed += 1;
eth->speed_test.b_speed = (((double)eth->speed_test.b_tx-eth->speed_test.b_tx_prev) * 8) / 1000 / 1000;
eth->speed_test.b_tx_prev = eth->speed_test.b_tx;
eth->speed_test.f_speed = (eth->params.f_tx_count - eth->params.f_tx_count_prev);
eth->params.f_tx_count_prev = eth->params.f_tx_count;
printf("%" PRIu64 "\t\t%.2f\t\t%" PRIu64 "\t\t%" PRIu64"\t\t%" PRIu64 "\n",
eth->params.s_elapsed,
eth->speed_test.b_speed,
(eth->speed_test.b_tx / 1024) / 1024,
(eth->speed_test.f_speed),
eth->params.f_tx_count);
if (eth->speed_test.b_speed > eth->speed_test.b_speed_max)
eth->speed_test.b_speed_max = eth->speed_test.b_speed;
if (eth->speed_test.f_speed > eth->speed_test.f_speed_max)
eth->speed_test.f_speed_max = eth->speed_test.f_speed;
eth->speed_test.b_speed_avg += eth->speed_test.b_speed;
eth->speed_test.f_speed_avg += eth->speed_test.f_speed;
eth->params.elapsed_time.tv_sec = eth->params.current_time.tv_sec;
eth->params.elapsed_time.tv_nsec = eth->params.current_time.tv_nsec;
eth->speed_test.b_tx_speed_prev = 0;
} else {
// Poll has been disabled in favour of a non-blocking recv (for now)
rx_len = recv(eth->intf.sock_fd, eth->frm.rx_buffer,
eth->params.f_size_total, MSG_DONTWAIT);
if (rx_len > 0) {
// Running in ACK mode
if (eth->params.f_ack)
{
if (ntohl(*eth->frm.rx_tlv_value) == VALUE_TEST_SUB_TLV &&
ntohs(*eth->frm.rx_sub_tlv_type) == TYPE_ACKINDEX)
{
eth->params.f_rx_count += 1;
eth->params.f_waiting_ack = false;
// Record if the frame is in-order, early or late
if (likely(ntohll(*eth->frm.rx_sub_tlv_value) == eth->params.f_rx_count)) {
eth->params.f_rx_ontime += 1;
} else if (ntohll(*eth->frm.rx_sub_tlv_value) > eth->params.f_rx_count) {
eth->params.f_rx_early += 1;
} else if (ntohll(*eth->frm.rx_sub_tlv_value) < eth->params.f_rx_count) {
eth->params.f_rx_late += 1;
}
} else if (ntohs(*eth->frm.rx_tlv_type) == TYPE_APPLICATION &&
ntohl(*eth->frm.rx_tlv_value) == VALUE_DYINGGASP) {
printf("\nRx host has quit\n");
speed_test_results(eth);
return;
// Received a non-test frame
} else {
eth->params.f_rx_other += 1;
}
// Not running in ACK mode
} else if (ntohs(*eth->frm.rx_tlv_type) == TYPE_APPLICATION &&
ntohll(*eth->frm.rx_tlv_value) == VALUE_DYINGGASP) {
printf("\nRx host has quit\n");
speed_test_results(eth);
return;
// Received a non-test frame
} else {
eth->params.f_rx_other += 1;
}
} else { // rx_len <= 0
if (errno != EAGAIN || errno != EWOULDBLOCK)
perror("Speed test Rx error ");
}
// If it hasn't been 1 second yet, send more test frames
if (eth->params.f_waiting_ack == false)
{
// Convert the timespec values into a double. The tv_nsec
// value loops around, it is not linearly incrementing indefinitely
current_time = eth->params.current_time.tv_sec + ((double)eth->params.current_time.tv_nsec * 1e-9);
last_tx = eth->params.last_tx.tv_sec + ((double)eth->params.last_tx.tv_nsec * 1e-9);
if (current_time - last_tx > eth->params.f_tx_dly) {
//if (pace_diff >= eth->params.f_tx_dly) {
// Set the time of the last frame Tx first before
// sending the frame, this was the frame Tx time is
// included in the inter-frame delay without having
// to know the link speed
clock_gettime(CLOCK_MONOTONIC_RAW, ð->params.last_tx);
build_sub_tlv(ð->frm, htons(TYPE_FRAMEINDEX),
htonll(eth->params.f_tx_count+1));
tx_ret = send(eth->intf.sock_fd,
eth->frm.tx_buffer,
eth->params.f_size_total,
MSG_DONTWAIT);
if (tx_ret > 0)
{
eth->params.f_tx_count += 1;
eth->speed_test.b_tx += eth->params.f_size_total;
eth->speed_test.b_tx_speed_prev += eth->params.f_size_total;
if (eth->params.f_ack) eth->params.f_waiting_ack = true;
} else {
if (errno != EAGAIN || errno != EWOULDBLOCK)
{
perror("Speed test Tx error ");
return;
}
}
}
}
} // End of current_time.tv_sec - ts_elapsed_TIME.tv_sec
} // *testBase<=*testMax
}
void speed_test_rx(struct etherate *eth)
{
int16_t tx_ret = 0;
int16_t rx_len = 0;
// Wait for the first test frame to be received before starting the test loop
uint8_t first_frame = false;
while (!first_frame)
{
rx_len = recv(eth->intf.sock_fd, eth->frm.rx_buffer,
eth->params.f_size_total, MSG_PEEK);
// Check if this is an Etherate test frame
if (ntohl(*eth->frm.rx_tlv_value) == VALUE_TEST_SUB_TLV &&
ntohs(*eth->frm.rx_sub_tlv_type) == TYPE_FRAMEINDEX)
{
first_frame = true;
} else {
// If the frame is not an Etherate frame it needs to be
// "consumed" otherwise the next MSG_PEEK will show the
// same frame:
rx_len = recv(eth->intf.sock_fd, eth->frm.rx_buffer,
eth->params.f_size_total, MSG_DONTWAIT);
}
}
clock_gettime(CLOCK_MONOTONIC_RAW, ð->params.elapsed_time);
// Rx test loop
while (*eth->speed_test.testBase <= *eth->speed_test.testMax)
{
clock_gettime(CLOCK_MONOTONIC_RAW, ð->params.current_time);
// If one second has passed
if ((eth->params.current_time.tv_sec - eth->params.elapsed_time.tv_sec) >= 1)
{
eth->params.s_elapsed += 1;
eth->speed_test.b_speed = (double)(eth->speed_test.b_rx - eth->speed_test.b_rx_prev) * 8 / 1000000;
eth->speed_test.b_rx_prev = eth->speed_test.b_rx;
eth->speed_test.f_speed = (eth->params.f_rx_count - eth->params.f_rx_count_prev);
eth->params.f_rx_count_prev = eth->params.f_rx_count;
printf("%" PRIu64 "\t\t%.2f\t\t%" PRIu64 "\t\t%" PRIu64 "\t\t%" PRIu64 "\n",
eth->params.s_elapsed,
eth->speed_test.b_speed,
(eth->speed_test.b_rx / 1024) / 1024,
(eth->speed_test.f_speed),
eth->params.f_rx_count);
if (eth->speed_test.b_speed > eth->speed_test.b_speed_max)
eth->speed_test.b_speed_max = eth->speed_test.b_speed;
if (eth->speed_test.f_speed > eth->speed_test.f_speed_max)
eth->speed_test.f_speed_max = eth->speed_test.f_speed;
eth->speed_test.b_speed_avg += eth->speed_test.b_speed;
eth->speed_test.f_speed_avg += eth->speed_test.f_speed;
eth->params.elapsed_time.tv_sec = eth->params.current_time.tv_sec;
eth->params.elapsed_time.tv_nsec = eth->params.current_time.tv_nsec;
}
// Poll has been disabled in favour of a non-blocking recv (for now)
rx_len = recv(eth->intf.sock_fd,
eth->frm.rx_buffer,
eth->params.f_size_total,
MSG_DONTWAIT);
if (rx_len > 0)
{
// Check if this is an Etherate test frame
if (likely(ntohl(*eth->frm.rx_tlv_value) == VALUE_TEST_SUB_TLV &&
ntohs(*eth->frm.rx_sub_tlv_type) == TYPE_FRAMEINDEX))
{
// If a VLAN tag is used Linux helpfully strips it off
if (eth->frm.vlan_id != VLAN_ID_DEF) rx_len += 4;
// Update test stats
eth->params.f_rx_count += 1;
eth->speed_test.b_rx += rx_len;
// Record if the frame is in-order, early or late
if (likely(ntohll(*eth->frm.rx_sub_tlv_value) == eth->params.f_rx_count)) {
eth->params.f_rx_ontime += 1;
} else if (ntohll(*eth->frm.rx_sub_tlv_value) > eth->params.f_rx_count) {
eth->params.f_rx_early += 1;
} else if (ntohll(*eth->frm.rx_sub_tlv_value) < eth->params.f_rx_count) {
eth->params.f_rx_late += 1;
}
// If running in ACK mode Rx needs to ACK to Tx host
if (eth->params.f_ack)
{
build_sub_tlv(ð->frm, htons(TYPE_ACKINDEX),
*eth->frm.rx_sub_tlv_value);
tx_ret = send(eth->intf.sock_fd,
eth->frm.tx_buffer,
eth->params.f_size_total,
MSG_DONTWAIT);
if (tx_ret > 0)
{
eth->params.f_tx_count += 1;
} else {
if (errno != EAGAIN || errno != EWOULDBLOCK)
{
perror("Speed test Tx error ");
return;
}
}
}
} else {
// Received a non-test frame
eth->params.f_rx_other += 1;
}
// Check if Tx host has quit/died;
if (unlikely(ntohl(*eth->frm.rx_tlv_value) == VALUE_DYINGGASP))
{
printf("\nTx host has quit\n");
speed_test_results(eth);
return;
}
} else { // rx_len <= 0
if (errno != EAGAIN || errno != EWOULDBLOCK)
perror("Speed test Rx error ");
}
} // *testBase<=*testMax
}