net: samples: pktgen mode samples/tests for qdisc layer

#!/bin/bash

#

# Benchmark script:

#  - developed for benchmarking egress qdisc path, derived (more

#    like cut'n'pasted) from ingress benchmark script.

#

# Script for injecting packets into egress qdisc path of the stack

# with pktgen "xmit_mode queue_xmit".

#

basedir=`dirname $0`

source ${basedir}/functions.sh

root_check_run_with_sudo "$@"

# Parameter parsing via include

source ${basedir}/parameters.sh

[ -z "$DEST_IP" ] && DEST_IP="198.18.0.42"

[ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff"

# Burst greater than 1 are invalid for queue_xmit mode

if [[ -n "$BURST" ]]; then

    err 1 "Bursting not supported for this mode"

fi

# Base Config

DELAY="0"        # Zero means max speed

COUNT="10000000" # Zero means indefinitely

# General cleanup everything since last run

pg_ctrl "reset"

# Threads are specified with parameter -t value in $THREADS

for ((thread = 0; thread < $THREADS; thread++)); do

    # The device name is extended with @name, using thread number to

    # make then unique, but any name will do.

    dev=${DEV}@${thread}

    # Add remove all other devices and add_device $dev to thread

    pg_thread $thread "rem_device_all"

    pg_thread $thread "add_device" $dev

    # Base config of dev

    pg_set $dev "flag QUEUE_MAP_CPU"

    pg_set $dev "count $COUNT"

    pg_set $dev "pkt_size $PKT_SIZE"

    pg_set $dev "delay $DELAY"

    pg_set $dev "flag NO_TIMESTAMP"

    # Destination

    pg_set $dev "dst_mac $DST_MAC"

    pg_set $dev "dst $DEST_IP"

    # Inject packet into TX qdisc egress path of stack

    pg_set $dev "xmit_mode queue_xmit"

done

# start_run

echo "Running... ctrl^C to stop" >&2

pg_ctrl "start"

echo "Done" >&2

# Print results

for ((thread = 0; thread < $THREADS; thread++)); do

    dev=${DEV}@${thread}

    echo "Device: $dev"

    cat /proc/net/pktgen/$dev | grep -A2 "Result:"

done