linux-stable/samples/pktgen/pktgen_bench_xmit_mode_queue_xmit.sh
J.J. Martzki a27ac53909 samples: pktgen: fix append mode failed issue
Each sample script sources functions.sh before parameters.sh
which makes $APPEND undefined when trapping EXIT no matter in
append mode or not. Due to this when sample scripts finished
they always do "pgctrl reset" which resets pktgen config.

So move trap to each script after sourcing parameters.sh
and trap EXIT explicitly.

Signed-off-by: J.J. Martzki <mars14850@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-07-03 09:15:26 +01:00

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#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
#
# 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 ${basedir}/parameters.sh
# Trap EXIT first
trap_exit
if [ -z "$DEST_IP" ]; then
[ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1"
fi
[ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff"
# Burst greater than 1 are invalid for queue_xmit mode
if [[ -n "$BURST" ]]; then
err 1 "Bursting not supported for this mode"
fi
[ -z "$COUNT" ] && COUNT="10000000" # Zero means indefinitely
if [ -n "$DEST_IP" ]; then
validate_addr${IP6} $DEST_IP
read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP)
fi
if [ -n "$DST_PORT" ]; then
read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)
validate_ports $UDP_DST_MIN $UDP_DST_MAX
fi
# General cleanup everything since last run
pg_ctrl "reset"
# Threads are specified with parameter -t value in $THREADS
for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
# The device name is extended with @name, using thread number to
# make then unique, but any name will do.
dev=${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 $dev "dst${IP6}_min $DST_MIN"
pg_set $dev "dst${IP6}_max $DST_MAX"
if [ -n "$DST_PORT" ]; then
# Single destination port or random port range
pg_set $dev "flag UDPDST_RND"
pg_set $dev "udp_dst_min $UDP_DST_MIN"
pg_set $dev "udp_dst_max $UDP_DST_MAX"
fi
# Inject packet into TX qdisc egress path of stack
pg_set $dev "xmit_mode queue_xmit"
done
# Run if user hits control-c
function print_result {
# Print results
for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
dev=${DEV}@${thread}
echo "Device: $dev"
cat /proc/net/pktgen/$dev | grep -A2 "Result:"
done
}
# trap keyboard interrupt (Ctrl-C)
trap true SIGINT
# start_run
echo "Running... ctrl^C to stop" >&2
pg_ctrl "start"
echo "Done" >&2
print_result