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https://github.com/torvalds/linux
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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>
91 lines
2.5 KiB
Bash
Executable file
91 lines
2.5 KiB
Bash
Executable file
#!/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 ${basedir}/parameters.sh
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#
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# Set some default params, if they didn't get set
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if [ -z "$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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# Base Config
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DELAY="0" # Zero means max speed
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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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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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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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# 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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# 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 results
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echo "Result device: $DEV"
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cat /proc/net/pktgen/$DEV
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