samples/pktgen/pktgen_sample05_flow_per_thread.sh

0001 #!/bin/bash
0002 # SPDX-License-Identifier: GPL-2.0
0003 #
0004 # Script will generate one flow per thread (-t N)
0005 #  - Same destination IP
0006 #  - Fake source IPs for each flow (fixed based on thread number)
0007 #
0008 # Useful for scale testing on receiver, to see whether silo'ing flows
0009 # works and scales.  For optimal scalability (on receiver) each
0010 # separate-flow should not access shared variables/data. This script
0011 # helps magnify any of these scaling issues by overloading the receiver.
0012 #
0013 basedir=`dirname $0`
0014 source ${basedir}/functions.sh
0015 root_check_run_with_sudo "$@"
0016
0017 # Parameter parsing via include
0018 source ${basedir}/parameters.sh
0019 # Set some default params, if they didn't get set
0020 if [ -z "$DEST_IP" ]; then
0021     [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1"
0022 fi
0023 [ -z "$DST_MAC" ]   && DST_MAC="90:e2:ba:ff:ff:ff"
0024 [ -z "$CLONE_SKB" ] && CLONE_SKB="0"
0025 [ -z "$BURST" ]     && BURST=32
0026 [ -z "$COUNT" ]     && COUNT="0" # Zero means indefinitely
0027 if [ -n "$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 $UDP_DST_MAX
0034 fi
0035
0036 # General cleanup everything since last run
0037 [ -z "$APPEND" ] && pg_ctrl "reset"
0038
0039 # Threads are specified with parameter -t value in $THREADS
0040 for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
0041     dev=${DEV}@${thread}
0042
0043     # Add remove all other devices and add_device $dev to thread
0044     [ -z "$APPEND" ] && pg_thread $thread "rem_device_all"
0045     pg_thread $thread "add_device" $dev
0046
0047     # Base config
0048     pg_set $dev "flag QUEUE_MAP_CPU"
0049     pg_set $dev "count $COUNT"
0050     pg_set $dev "clone_skb $CLONE_SKB"
0051     pg_set $dev "pkt_size $PKT_SIZE"
0052     pg_set $dev "delay $DELAY"
0053     pg_set $dev "flag NO_TIMESTAMP"
0054
0055     # Single destination
0056     pg_set $dev "dst_mac $DST_MAC"
0057     pg_set $dev "dst${IP6}_min $DST_MIN"
0058     pg_set $dev "dst${IP6}_max $DST_MAX"
0059
0060     if [ -n "$DST_PORT" ]; then
0061         # Single destination port or random port range
0062         pg_set $dev "flag UDPDST_RND"
0063         pg_set $dev "udp_dst_min $UDP_DST_MIN"
0064         pg_set $dev "udp_dst_max $UDP_DST_MAX"
0065     fi
0066
0067     [ ! -z "$UDP_CSUM" ] && pg_set $dev "flag UDPCSUM"
0068
0069     # Setup source IP-addresses based on thread number
0070     pg_set $dev "src_min 198.18.$((thread+1)).1"
0071     pg_set $dev "src_max 198.18.$((thread+1)).1"
0072
0073     # Setup burst, for easy testing -b 0 disable bursting
0074     # (internally in pktgen default and minimum burst=1)
0075     if [[ ${BURST} -ne 0 ]]; then
0076         pg_set $dev "burst $BURST"
0077     else
0078         info "$dev: Not using burst"
0079     fi
0080
0081 done
0082
0083 # Run if user hits control-c
0084 function print_result() {
0085     # Print results
0086     for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
0087         dev=${DEV}@${thread}
0088         echo "Device: $dev"
0089         cat /proc/net/pktgen/$dev | grep -A2 "Result:"
0090     done
0091 }
0092 # trap keyboard interrupt (Ctrl-C)
0093 trap true SIGINT
0094
0095 if [ -z "$APPEND" ]; then
0096     echo "Running... ctrl^C to stop" >&2
0097     pg_ctrl "start"
0098
0099     print_result
0100 else
0101     echo "Append mode: config done. Do more or use 'pg_ctrl start' to run"
0102 fi