linux/samples/pktgen/pktgen_sample05_flow_per_thread.sh
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   1#!/bin/bash
   2# SPDX-License-Identifier: GPL-2.0
   3#
   4# Script will generate one flow per thread (-t N)
   5#  - Same destination IP
   6#  - Fake source IPs for each flow (fixed based on thread number)
   7#
   8# Useful for scale testing on receiver, to see whether silo'ing flows
   9# works and scales.  For optimal scalability (on receiver) each
  10# separate-flow should not access shared variables/data. This script
  11# helps magnify any of these scaling issues by overloading the receiver.
  12#
  13basedir=`dirname $0`
  14source ${basedir}/functions.sh
  15root_check_run_with_sudo "$@"
  16
  17# Parameter parsing via include
  18source ${basedir}/parameters.sh
  19# Set some default params, if they didn't get set
  20if [ -z "$DEST_IP" ]; then
  21    [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1"
  22fi
  23[ -z "$DST_MAC" ]   && DST_MAC="90:e2:ba:ff:ff:ff"
  24[ -z "$CLONE_SKB" ] && CLONE_SKB="0"
  25[ -z "$BURST" ]     && BURST=32
  26[ -z "$COUNT" ]     && COUNT="0" # Zero means indefinitely
  27if [ -n "$DEST_IP" ]; then
  28    validate_addr${IP6} $DEST_IP
  29    read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP)
  30fi
  31if [ -n "$DST_PORT" ]; then
  32    read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)
  33    validate_ports $UDP_DST_MIN $UDP_DST_MAX
  34fi
  35
  36# General cleanup everything since last run
  37[ -z "$APPEND" ] && pg_ctrl "reset"
  38
  39# Threads are specified with parameter -t value in $THREADS
  40for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
  41    dev=${DEV}@${thread}
  42
  43    # Add remove all other devices and add_device $dev to thread
  44    [ -z "$APPEND" ] && pg_thread $thread "rem_device_all"
  45    pg_thread $thread "add_device" $dev
  46
  47    # Base config
  48    pg_set $dev "flag QUEUE_MAP_CPU"
  49    pg_set $dev "count $COUNT"
  50    pg_set $dev "clone_skb $CLONE_SKB"
  51    pg_set $dev "pkt_size $PKT_SIZE"
  52    pg_set $dev "delay $DELAY"
  53    pg_set $dev "flag NO_TIMESTAMP"
  54
  55    # Single destination
  56    pg_set $dev "dst_mac $DST_MAC"
  57    pg_set $dev "dst${IP6}_min $DST_MIN"
  58    pg_set $dev "dst${IP6}_max $DST_MAX"
  59
  60    if [ -n "$DST_PORT" ]; then
  61        # Single destination port or random port range
  62        pg_set $dev "flag UDPDST_RND"
  63        pg_set $dev "udp_dst_min $UDP_DST_MIN"
  64        pg_set $dev "udp_dst_max $UDP_DST_MAX"
  65    fi
  66
  67    # Setup source IP-addresses based on thread number
  68    pg_set $dev "src_min 198.18.$((thread+1)).1"
  69    pg_set $dev "src_max 198.18.$((thread+1)).1"
  70
  71    # Setup burst, for easy testing -b 0 disable bursting
  72    # (internally in pktgen default and minimum burst=1)
  73    if [[ ${BURST} -ne 0 ]]; then
  74        pg_set $dev "burst $BURST"
  75    else
  76        info "$dev: Not using burst"
  77    fi
  78
  79done
  80
  81# Run if user hits control-c
  82function print_result() {
  83    # Print results
  84    for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
  85        dev=${DEV}@${thread}
  86        echo "Device: $dev"
  87        cat /proc/net/pktgen/$dev | grep -A2 "Result:"
  88    done
  89}
  90# trap keyboard interrupt (Ctrl-C)
  91trap true SIGINT
  92
  93if [ -z "$APPEND" ]; then
  94    echo "Running... ctrl^C to stop" >&2
  95    pg_ctrl "start"
  96
  97    print_result
  98else
  99    echo "Append mode: config done. Do more or use 'pg_ctrl start' to run"
 100fi
 101