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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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40f843ee5e
Currently, kernel pktgen has the feature to specify destination
address range for sending packet. (e.g. pgset "dst_min/dst_max")
But on samples, each pktgen script doesn't have any option to achieve this.
This commit adds the feature to specify the destination address range with CIDR.
-d : ($DEST_IP) destination IP. CIDR (e.g. 198.18.0.0/15) is also allowed
# ./pktgen_sample01_simple.sh -6 -d fe80::20/126 -p 3000 -n 4
# tcpdump ip6 and udp
05:14:18.082285 IP6 fe80::99.71 > fe80::23.3000: UDP, length 16
05:14:18.082564 IP6 fe80::99.43 > fe80::23.3000: UDP, length 16
05:14:18.083366 IP6 fe80::99.107 > fe80::22.3000: UDP, length 16
05:14:18.083585 IP6 fe80::99.97 > fe80::21.3000: UDP, length 16
Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
98 lines
2.8 KiB
Bash
Executable File
98 lines
2.8 KiB
Bash
Executable File
#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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#
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# Script will generate one flow per thread (-t N)
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# - Same destination IP
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# - Fake source IPs for each flow (fixed based on thread number)
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#
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# Useful for scale testing on receiver, to see whether silo'ing flows
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# works and scales. For optimal scalability (on receiver) each
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# separate-flow should not access shared variables/data. This script
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# helps magnify any of these scaling issues by overloading the receiver.
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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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source ${basedir}/parameters.sh
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# Set some default params, if they didn't get set
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[ -z "$DEST_IP" ] && DEST_IP="198.18.0.42"
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[ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff"
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[ -z "$CLONE_SKB" ] && CLONE_SKB="0"
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[ -z "$BURST" ] && BURST=32
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[ -z "$COUNT" ] && COUNT="0" # Zero means indefinitely
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if [ -n "$DEST_IP" ]; then
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validate_addr $DEST_IP
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read -r DST_MIN DST_MAX <<< $(parse_addr $DEST_IP)
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fi
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if [ -n "$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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# Base Config
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DELAY="0" # Zero means max speed
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# General cleanup everything since last run
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pg_ctrl "reset"
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# Threads are specified with parameter -t value in $THREADS
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for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
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dev=${DEV}@${thread}
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# Add remove all other devices and add_device $dev to thread
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pg_thread $thread "rem_device_all"
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pg_thread $thread "add_device" $dev
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# Base config
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pg_set $dev "flag QUEUE_MAP_CPU"
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pg_set $dev "count $COUNT"
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pg_set $dev "clone_skb $CLONE_SKB"
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pg_set $dev "pkt_size $PKT_SIZE"
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pg_set $dev "delay $DELAY"
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pg_set $dev "flag NO_TIMESTAMP"
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# Single destination
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pg_set $dev "dst_mac $DST_MAC"
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pg_set $dev "dst_min $DST_MIN"
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pg_set $dev "dst_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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# Setup source IP-addresses based on thread number
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pg_set $dev "src_min 198.18.$((thread+1)).1"
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pg_set $dev "src_max 198.18.$((thread+1)).1"
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# Setup burst, for easy testing -b 0 disable bursting
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# (internally in pktgen default and minimum burst=1)
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if [[ ${BURST} -ne 0 ]]; then
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pg_set $dev "burst $BURST"
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else
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info "$dev: Not using burst"
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fi
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done
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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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for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
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dev=${DEV}@${thread}
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echo "Device: $dev"
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cat /proc/net/pktgen/$dev | grep -A2 "Result:"
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done
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}
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# trap keyboard interrupt (Ctrl-C)
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trap true SIGINT
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echo "Running... ctrl^C to stop" >&2
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pg_ctrl "start"
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print_result
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