linux/samples/pktgen/pktgen_bench_xmit_mode_queue_xmit.sh
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   1#!/bin/bash
   2# SPDX-License-Identifier: GPL-2.0
   3#
   4# Benchmark script:
   5#  - developed for benchmarking egress qdisc path, derived (more
   6#    like cut'n'pasted) from ingress benchmark script.
   7#
   8# Script for injecting packets into egress qdisc path of the stack
   9# with pktgen "xmit_mode queue_xmit".
  10#
  11basedir=`dirname $0`
  12source ${basedir}/functions.sh
  13root_check_run_with_sudo "$@"
  14
  15# Parameter parsing via include
  16source ${basedir}/parameters.sh
  17if [ -z "$DEST_IP" ]; then
  18    [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1"
  19fi
  20[ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff"
  21
  22# Burst greater than 1 are invalid for queue_xmit mode
  23if [[ -n "$BURST" ]]; then
  24    err 1 "Bursting not supported for this mode"
  25fi
  26[ -z "$COUNT" ] && COUNT="10000000" # 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
  37pg_ctrl "reset"
  38
  39# Threads are specified with parameter -t value in $THREADS
  40for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
  41    # The device name is extended with @name, using thread number to
  42    # make then unique, but any name will do.
  43    dev=${DEV}@${thread}
  44
  45    # Add remove all other devices and add_device $dev to thread
  46    pg_thread $thread "rem_device_all"
  47    pg_thread $thread "add_device" $dev
  48
  49    # Base config of dev
  50    pg_set $dev "flag QUEUE_MAP_CPU"
  51    pg_set $dev "count $COUNT"
  52    pg_set $dev "pkt_size $PKT_SIZE"
  53    pg_set $dev "delay $DELAY"
  54    pg_set $dev "flag NO_TIMESTAMP"
  55
  56    # Destination
  57    pg_set $dev "dst_mac $DST_MAC"
  58    pg_set $dev "dst${IP6}_min $DST_MIN"
  59    pg_set $dev "dst${IP6}_max $DST_MAX"
  60
  61    if [ -n "$DST_PORT" ]; then
  62        # Single destination port or random port range
  63        pg_set $dev "flag UDPDST_RND"
  64        pg_set $dev "udp_dst_min $UDP_DST_MIN"
  65        pg_set $dev "udp_dst_max $UDP_DST_MAX"
  66    fi
  67
  68    # Inject packet into TX qdisc egress path of stack
  69    pg_set $dev "xmit_mode queue_xmit"
  70done
  71
  72# start_run
  73echo "Running... ctrl^C to stop" >&2
  74pg_ctrl "start"
  75echo "Done" >&2
  76
  77# Print results
  78for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
  79    dev=${DEV}@${thread}
  80    echo "Device: $dev"
  81    cat /proc/net/pktgen/$dev | grep -A2 "Result:"
  82done
  83