samples/pktgen/pktgen_bench_xmit_mode_queue_xmit.sh

0001 #!/bin/bash
0002 # SPDX-License-Identifier: GPL-2.0
0003 #
0004 # Benchmark script:
0005 #  - developed for benchmarking egress qdisc path, derived (more
0006 #    like cut'n'pasted) from ingress benchmark script.
0007 #
0008 # Script for injecting packets into egress qdisc path of the stack
0009 # with pktgen "xmit_mode queue_xmit".
0010 #
0011 basedir=`dirname $0`
0012 source ${basedir}/functions.sh
0013 root_check_run_with_sudo "$@"
0014
0015 # Parameter parsing via include
0016 source ${basedir}/parameters.sh
0017 if [ -z "$DEST_IP" ]; then
0018     [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1"
0019 fi
0020 [ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff"
0021
0022 # Burst greater than 1 are invalid for queue_xmit mode
0023 if [[ -n "$BURST" ]]; then
0024     err 1 "Bursting not supported for this mode"
0025 fi
0026 [ -z "$COUNT" ] && COUNT="10000000" # Zero means indefinitely
0027 if [ -n "$DEST_IP" ]; then
0028     validate_addr${IP6} $DEST_IP
0029     read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP)
0030 fi
0031 if [ -n "$DST_PORT" ]; then
0032     read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)
0033     validate_ports $UDP_DST_MIN $UDP_DST_MAX
0034 fi
0035
0036 # General cleanup everything since last run
0037 pg_ctrl "reset"
0038
0039 # Threads are specified with parameter -t value in $THREADS
0040 for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
0041     # The device name is extended with @name, using thread number to
0042     # make then unique, but any name will do.
0043     dev=${DEV}@${thread}
0044
0045     # Add remove all other devices and add_device $dev to thread
0046     pg_thread $thread "rem_device_all"
0047     pg_thread $thread "add_device" $dev
0048
0049     # Base config of dev
0050     pg_set $dev "flag QUEUE_MAP_CPU"
0051     pg_set $dev "count $COUNT"
0052     pg_set $dev "pkt_size $PKT_SIZE"
0053     pg_set $dev "delay $DELAY"
0054     pg_set $dev "flag NO_TIMESTAMP"
0055
0056     # Destination
0057     pg_set $dev "dst_mac $DST_MAC"
0058     pg_set $dev "dst${IP6}_min $DST_MIN"
0059     pg_set $dev "dst${IP6}_max $DST_MAX"
0060
0061     if [ -n "$DST_PORT" ]; then
0062         # Single destination port or random port range
0063         pg_set $dev "flag UDPDST_RND"
0064         pg_set $dev "udp_dst_min $UDP_DST_MIN"
0065         pg_set $dev "udp_dst_max $UDP_DST_MAX"
0066     fi
0067
0068     # Inject packet into TX qdisc egress path of stack
0069     pg_set $dev "xmit_mode queue_xmit"
0070 done
0071
0072 # Run if user hits control-c
0073 function print_result {
0074     # Print results
0075     for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
0076         dev=${DEV}@${thread}
0077         echo "Device: $dev"
0078         cat /proc/net/pktgen/$dev | grep -A2 "Result:"
0079     done
0080 }
0081 # trap keyboard interrupt (Ctrl-C)
0082 trap true SIGINT
0083
0084 # start_run
0085 echo "Running... ctrl^C to stop" >&2
0086 pg_ctrl "start"
0087 echo "Done" >&2
0088
0089 print_result