107 lines · bash
1#!/bin/bash2# SPDX-License-Identifier: GPL-2.03#4# Script will generate one flow per thread (-t N)5# - Same destination IP6# - Fake source IPs for each flow (fixed based on thread number)7#8# Useful for scale testing on receiver, to see whether silo'ing flows9# works and scales. For optimal scalability (on receiver) each10# separate-flow should not access shared variables/data. This script11# helps magnify any of these scaling issues by overloading the receiver.12#13basedir=`dirname $0`14source ${basedir}/functions.sh15root_check_run_with_sudo "$@"16 17# Parameter parsing via include18source ${basedir}/parameters.sh19 20# Trap EXIT first21trap_exit22 23# Set some default params, if they didn't get set24if [ -z "$DEST_IP" ]; then25 [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1"26fi27[ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff"28[ -z "$CLONE_SKB" ] && CLONE_SKB="0"29[ -z "$BURST" ] && BURST=3230[ -z "$COUNT" ] && COUNT="0" # Zero means indefinitely31if [ -n "$DEST_IP" ]; then32 validate_addr${IP6} $DEST_IP33 read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP)34fi35if [ -n "$DST_PORT" ]; then36 read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)37 validate_ports $UDP_DST_MIN $UDP_DST_MAX38fi39 40# General cleanup everything since last run41[ -z "$APPEND" ] && pg_ctrl "reset"42 43# Threads are specified with parameter -t value in $THREADS44for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do45 dev=${DEV}@${thread}46 47 # Add remove all other devices and add_device $dev to thread48 [ -z "$APPEND" ] && pg_thread $thread "rem_device_all"49 pg_thread $thread "add_device" $dev50 51 # Base config52 pg_set $dev "flag QUEUE_MAP_CPU"53 pg_set $dev "count $COUNT"54 pg_set $dev "clone_skb $CLONE_SKB"55 pg_set $dev "pkt_size $PKT_SIZE"56 pg_set $dev "delay $DELAY"57 pg_set $dev "flag NO_TIMESTAMP"58 59 # Single destination60 pg_set $dev "dst_mac $DST_MAC"61 pg_set $dev "dst${IP6}_min $DST_MIN"62 pg_set $dev "dst${IP6}_max $DST_MAX"63 64 if [ -n "$DST_PORT" ]; then65 # Single destination port or random port range66 pg_set $dev "flag UDPDST_RND"67 pg_set $dev "udp_dst_min $UDP_DST_MIN"68 pg_set $dev "udp_dst_max $UDP_DST_MAX"69 fi70 71 [ ! -z "$UDP_CSUM" ] && pg_set $dev "flag UDPCSUM"72 73 # Setup source IP-addresses based on thread number74 pg_set $dev "src_min 198.18.$((thread+1)).1"75 pg_set $dev "src_max 198.18.$((thread+1)).1"76 77 # Setup burst, for easy testing -b 0 disable bursting78 # (internally in pktgen default and minimum burst=1)79 if [[ ${BURST} -ne 0 ]]; then80 pg_set $dev "burst $BURST"81 else82 info "$dev: Not using burst"83 fi84 85done86 87# Run if user hits control-c88function print_result() {89 # Print results90 for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do91 dev=${DEV}@${thread}92 echo "Device: $dev"93 cat /proc/net/pktgen/$dev | grep -A2 "Result:"94 done95}96# trap keyboard interrupt (Ctrl-C)97trap true SIGINT98 99if [ -z "$APPEND" ]; then100 echo "Running... ctrl^C to stop" >&2101 pg_ctrl "start"102 103 print_result104else105 echo "Append mode: config done. Do more or use 'pg_ctrl start' to run"106fi107