325 lines
14 KiB
C
325 lines
14 KiB
C
/*
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* Copyright (c) 2020, Broadband Forum
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* Copyright (c) 2020, AT&T Communications
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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*
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* UDP Speed Test - udpst_srates.c
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*
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* This file builds or displays the sending rate table containing the send
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* parameters used for testing.
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*
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* Author Date Comments
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* -------------------- ---------- ----------------------------------
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* Len Ciavattone 09/05/2019 Split off from udpst.c
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* Len Ciavattone 09/24/2019 Include max burst when jumbo false
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* Len Ciavattone 12/14/2021 Modified largest jumbo sizes to be
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* even multiple of 1500 byte packets
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* with IPv6. No longer mixing jumbo
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* sizes with non-jumbo sizes.
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* Len Ciavattone 12/21/2021 Add traditional (1500 byte) MTU
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* Len Ciavattone 04/21/2022 Increase sending rates to 40 Gbps
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* Len Ciavattone 12/26/2022 Add random payload size support
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*
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*/
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#define UDPST_SRATES
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#ifdef __linux__
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#define _GNU_SOURCE
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <limits.h>
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#include <time.h>
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#include <unistd.h>
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#include <net/if.h>
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#include <netinet/in.h>
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#ifdef AUTH_KEY_ENABLE
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#include <openssl/hmac.h>
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#include <openssl/x509.h>
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#endif
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#else
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#include "../udpst_srates_alt1.h"
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#endif
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//
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#include "cJSON.h"
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#include "udpst_common.h"
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#include "udpst_protocol.h"
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#include "udpst.h"
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#include "udpst_srates.h"
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#ifndef __linux__
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#include "../udpst_srates_alt2.h"
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#endif
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//----------------------------------------------------------------------------
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//
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// External data
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//
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extern char scratch[STRING_SIZE];
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extern struct configuration conf;
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extern struct repository repo;
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//----------------------------------------------------------------------------
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// Function definitions
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//----------------------------------------------------------------------------
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//
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// Define sending rate table (with or without jumbo payload sizes above 1 Gbps)
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//
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// Populate scratch buffer and return length on error
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//
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int def_sending_rates(void) {
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int var, i, j, k, jmax, kmax;
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unsigned int payload;
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BOOL stop;
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struct sendingRate *sr;
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//
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// Define initial sending rates up to 1 Gbps
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//
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if (conf.traditionalMTU) {
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jmax = 11;
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kmax = 8;
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payload = MAX_TPAYLOAD_SIZE;
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} else {
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jmax = 9;
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kmax = 10;
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payload = MAX_PAYLOAD_SIZE;
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}
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stop = FALSE;
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for (k = 0; k <= kmax; k++) {
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for (i = 0; i < 10; i++) {
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sr = &repo.sendingRates[repo.maxSendingRates++];
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if (k > 0) {
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sr->txInterval1 = BASE_SEND_TIMER1;
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sr->udpPayload1 = payload;
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sr->burstSize1 = k;
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}
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if (i > 0) {
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sr->txInterval2 = BASE_SEND_TIMER2;
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sr->udpPayload2 = payload;
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sr->burstSize2 = i;
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sr->udpAddon2 = 0;
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}
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if (k == 0 && i == 0) {
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sr->txInterval2 = 50000;
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sr->udpAddon2 = payload; // Set maximum value
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sr->udpAddon2 |= SRATE_RAND_BIT; // Set randomization bit
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} else if (!conf.traditionalMTU && k == kmax) {
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break;
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}
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for (j = 1; j <= jmax; j++) {
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sr = &repo.sendingRates[repo.maxSendingRates++];
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if (k > 0) {
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sr->txInterval1 = BASE_SEND_TIMER1;
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sr->udpPayload1 = payload;
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sr->burstSize1 = k;
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}
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sr->txInterval2 = BASE_SEND_TIMER2;
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if (i > 0) {
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sr->udpPayload2 = payload;
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sr->burstSize2 = i;
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}
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sr->udpAddon2 = ((j * 1000) / 8) - L3DG_OVERHEAD;
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// Explicit stop at 1 Gbps
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if (repo.maxSendingRates > 1000) {
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stop = TRUE;
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break;
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}
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}
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if (stop)
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break;
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}
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if (stop)
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break;
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}
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repo.hSpeedThresh = repo.maxSendingRates - 1; // Index of high-speed threshold
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//
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// Finish jumbo or non-jumbo payload sizes above 1 Gbps
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//
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// NOTE: Total sending rate rows are the same in either case
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//
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if (conf.jumboStatus) {
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//
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// Increase payload sizes until jumbo limit
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//
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// To better support the use of jumbo sizes with a non-jumbo MTU, do not use any payload sizes
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// that would mix datagrams requiring fragmentation with datagrams not requiring fragmentation.
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// Because this has been shown to produce reordering, all payload sizes will be greater than
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// what can be accommodated in IPv6 with a 1500 byte MTU.
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//
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for (i = MAX_L3_PACKET + 125; i <= MAX_JL3_PACKET; i += 125) {
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sr = &repo.sendingRates[repo.maxSendingRates++];
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sr->txInterval1 = BASE_SEND_TIMER1;
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sr->udpPayload1 = i - L3DG_OVERHEAD;
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sr->burstSize1 = 10;
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}
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jmax = 11;
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payload = MAX_JPAYLOAD_SIZE;
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} else if (conf.traditionalMTU) {
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jmax = 9;
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payload = MAX_TPAYLOAD_SIZE;
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} else {
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jmax = 11;
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payload = MAX_PAYLOAD_SIZE;
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}
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for (j = jmax; repo.maxSendingRates < MAX_SENDING_RATES; j++) {
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sr = &repo.sendingRates[repo.maxSendingRates++];
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sr->txInterval1 = BASE_SEND_TIMER1;
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sr->udpPayload1 = payload;
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if (j < MAX_BURST_SIZE)
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sr->burstSize1 = j;
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else
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sr->burstSize1 = MAX_BURST_SIZE;
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sr->txInterval2 = 0;
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sr->udpPayload2 = 0;
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sr->burstSize2 = 0;
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sr->udpAddon2 = 0;
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}
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//
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// Sanity check table
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//
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if (repo.maxSendingRates > MAX_SENDING_RATES) {
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var = sprintf(scratch, "ERROR: Sending rate table build failure (overrun)\n");
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return var;
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}
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return 0;
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}
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//----------------------------------------------------------------------------
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//
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// Display sending rate table parameters for each index
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//
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void show_sending_rates(int fd) {
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int i, j, var, payload, addon, ipv6add, min, avg;
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BOOL bvar, randpayload;
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char buf[16];
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double dvar, dvar2;
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struct sendingRate *sr;
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//
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// Output header
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//
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if (conf.ipv6Only) {
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ipv6add = IPV6_ADDSIZE;
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strcpy(buf, "IPv6");
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} else {
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ipv6add = 0;
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strcpy(buf, "IPv4");
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}
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var = sprintf(scratch, "Sending Rate Table for %s (Dual Transmitters, Referenced by Index)...\n", buf);
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var = write(fd, scratch, var);
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var = sprintf(scratch, "%s) %s %s %s + %s %s %s %s = %s\n", "Index", "TxInt(us)", "Payload", "Burst", "TxInt(us)",
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"Payload", "Burst", "Add-On", "Mbps(L3/IP)");
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var = write(fd, scratch, var);
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//
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// Output each row
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//
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min = (int) MIN_PAYLOAD_SIZE - ipv6add; // Minimum payload size
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for (i = 0, sr = repo.sendingRates; i < repo.maxSendingRates; i++, sr++) {
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dvar = 0;
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bvar = FALSE; // Is randomization in use
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//
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// Process all three send options
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//
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for (j = 0; j < 3; j++) {
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dvar2 = 0;
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payload = 0;
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randpayload = FALSE;
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if (j == 0) { // Transmitter 1
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if (sr->burstSize1 > 0) {
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dvar2 = (double) ((USECINSEC / sr->txInterval1) * sr->burstSize1);
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payload = (int) (sr->udpPayload1 & ~SRATE_RAND_BIT) - ipv6add;
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if (sr->udpPayload1 & SRATE_RAND_BIT)
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randpayload = TRUE;
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}
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} else if (j == 1) { // Transmitter 2
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if (sr->burstSize2 > 0) {
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dvar2 = (double) ((USECINSEC / sr->txInterval2) * sr->burstSize2);
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payload = (int) (sr->udpPayload2 & ~SRATE_RAND_BIT) - ipv6add;
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if (sr->udpPayload2 & SRATE_RAND_BIT)
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randpayload = TRUE;
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}
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} else { // Add-on (used with transmitter 2)
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if (sr->udpAddon2 > 0) {
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dvar2 = (double) (USECINSEC / sr->txInterval2);
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payload = (int) (sr->udpAddon2 & ~SRATE_RAND_BIT) - ipv6add;
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if (sr->udpAddon2 & SRATE_RAND_BIT)
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randpayload = TRUE;
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}
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}
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//
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// Calculate bytes/sec for this send option and add to total
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//
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avg = payload; // Init average to static value or maximum if SRATE_RAND_BIT set
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if (randpayload) {
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bvar = TRUE;
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avg = (min + payload) / 2; // Calculate average
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}
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dvar += dvar2 * (double) (avg + L3DG_OVERHEAD + ipv6add);
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//
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// Accummulate row text
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//
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if (randpayload) {
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sprintf(buf, "%d-%d", min, payload);
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} else {
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sprintf(buf, "%d", payload);
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}
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if (j == 0) {
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var = sprintf(scratch, "%5d) %8u %7s %5u ", i, sr->txInterval1, buf, sr->burstSize1);
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} else if (j == 1) {
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var += sprintf(&scratch[var], "+ %8u %7s %5u ", sr->txInterval2, buf, sr->burstSize2);
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} else {
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var += sprintf(&scratch[var], "%7s ", buf);
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}
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}
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//
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// Aggregate sending rate
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//
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dvar *= 8; // Convert to bits/sec
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dvar /= 1000000; // Convert to Mbps
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if (bvar)
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scratch[var++] = '~';
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else
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scratch[var++] = ' ';
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var += sprintf(&scratch[var], "= %10.2f\n", dvar); // Finalize row text
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var = write(fd, scratch, var);
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}
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if (!conf.jumboStatus) {
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var = sprintf(scratch, "NOTE: Disabling jumbo datagram sizes may impede rates above 1 Gbps\n");
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var = write(fd, scratch, var);
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}
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return;
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}
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//----------------------------------------------------------------------------
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