2023-08-30 17:31:07 +02:00
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#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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#
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# Simple example:
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# * pktgen sending with single thread and single interface
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# * flow variation via random UDP source port
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#
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basedir=`dirname $0`
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source ${basedir}/functions.sh
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root_check_run_with_sudo "$@"
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# Parameter parsing via include
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# - go look in parameters.sh to see which setting are avail
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# - required param is the interface "-i" stored in $DEV
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source ${basedir}/parameters.sh
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2023-10-24 12:59:35 +02:00
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# Trap EXIT first
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trap_exit
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2023-08-30 17:31:07 +02:00
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#
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# Set some default params, if they didn't get set
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if [ -z "$DEST_IP" ]; then
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[ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1"
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fi
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[ -z "$CLONE_SKB" ] && CLONE_SKB="0"
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# Example enforce param "-m" for dst_mac
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[ -z "$DST_MAC" ] && usage && err 2 "Must specify -m dst_mac"
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[ -z "$COUNT" ] && COUNT="100000" # Zero means indefinitely
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if [ -n "$DEST_IP" ]; then
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validate_addr${IP6} $DEST_IP
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read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP)
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fi
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if [ -n "$DST_PORT" ]; then
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read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)
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validate_ports $UDP_DST_MIN $UDP_DST_MAX
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fi
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# Flow variation random source port between min and max
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UDP_SRC_MIN=9
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UDP_SRC_MAX=109
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# General cleanup everything since last run
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# (especially important if other threads were configured by other scripts)
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[ -z "$APPEND" ] && pg_ctrl "reset"
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# Add remove all other devices and add_device $DEV to thread 0
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thread=0
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[ -z "$APPEND" ] && pg_thread $thread "rem_device_all"
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pg_thread $thread "add_device" $DEV
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# How many packets to send (zero means indefinitely)
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pg_set $DEV "count $COUNT"
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# Reduce alloc cost by sending same SKB many times
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# - this obviously affects the randomness within the packet
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pg_set $DEV "clone_skb $CLONE_SKB"
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# Set packet size
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pg_set $DEV "pkt_size $PKT_SIZE"
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# Delay between packets (zero means max speed)
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pg_set $DEV "delay $DELAY"
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# Flag example disabling timestamping
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pg_set $DEV "flag NO_TIMESTAMP"
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# Destination
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pg_set $DEV "dst_mac $DST_MAC"
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pg_set $DEV "dst${IP6}_min $DST_MIN"
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pg_set $DEV "dst${IP6}_max $DST_MAX"
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if [ -n "$DST_PORT" ]; then
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# Single destination port or random port range
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pg_set $DEV "flag UDPDST_RND"
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pg_set $DEV "udp_dst_min $UDP_DST_MIN"
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pg_set $DEV "udp_dst_max $UDP_DST_MAX"
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fi
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[ ! -z "$UDP_CSUM" ] && pg_set $dev "flag UDPCSUM"
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# Setup random UDP port src range
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pg_set $DEV "flag UDPSRC_RND"
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pg_set $DEV "udp_src_min $UDP_SRC_MIN"
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pg_set $DEV "udp_src_max $UDP_SRC_MAX"
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# Run if user hits control-c
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function print_result() {
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# Print results
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echo "Result device: $DEV"
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cat /proc/net/pktgen/$DEV
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}
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# trap keyboard interrupt (Ctrl-C)
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trap true SIGINT
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if [ -z "$APPEND" ]; then
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# start_run
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echo "Running... ctrl^C to stop" >&2
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pg_ctrl "start"
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echo "Done" >&2
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print_result
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else
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echo "Append mode: config done. Do more or use 'pg_ctrl start' to run"
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fi
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