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- #!/bin/bash
- # SPDX-License-Identifier: GPL-2.0
- #
- # Multiqueue: Using pktgen threads for sending on multiple CPUs
- # * adding devices to kernel threads
- # * notice the naming scheme for keeping device names unique
- # * nameing scheme: dev@thread_number
- # * flow variation via random UDP source port
- #
- basedir=`dirname $0`
- source ${basedir}/functions.sh
- root_check_run_with_sudo "$@"
- #
- # Required param: -i dev in $DEV
- source ${basedir}/parameters.sh
- [ -z "$COUNT" ] && COUNT="100000" # Zero means indefinitely
- # Base Config
- DELAY="0" # Zero means max speed
- [ -z "$CLONE_SKB" ] && CLONE_SKB="0"
- # Flow variation random source port between min and max
- UDP_SRC_MIN=9
- UDP_SRC_MAX=109
- # (example of setting default params in your script)
- if [ -z "$DEST_IP" ]; then
- [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1"
- fi
- [ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff"
- if [ -n "$DEST_IP" ]; then
- validate_addr${IP6} $DEST_IP
- read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP)
- fi
- if [ -n "$DST_PORT" ]; then
- read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)
- validate_ports $UDP_DST_MIN $UDP_DST_MAX
- fi
- # General cleanup everything since last run
- pg_ctrl "reset"
- # Threads are specified with parameter -t value in $THREADS
- for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
- # The device name is extended with @name, using thread number to
- # make then unique, but any name will do.
- dev=${DEV}@${thread}
- # Add remove all other devices and add_device $dev to thread
- pg_thread $thread "rem_device_all"
- pg_thread $thread "add_device" $dev
- # Notice config queue to map to cpu (mirrors smp_processor_id())
- # It is beneficial to map IRQ /proc/irq/*/smp_affinity 1:1 to CPU number
- pg_set $dev "flag QUEUE_MAP_CPU"
- # Base config of dev
- pg_set $dev "count $COUNT"
- pg_set $dev "clone_skb $CLONE_SKB"
- pg_set $dev "pkt_size $PKT_SIZE"
- pg_set $dev "delay $DELAY"
- # Flag example disabling timestamping
- pg_set $dev "flag NO_TIMESTAMP"
- # Destination
- pg_set $dev "dst_mac $DST_MAC"
- pg_set $dev "dst${IP6}_min $DST_MIN"
- pg_set $dev "dst${IP6}_max $DST_MAX"
- if [ -n "$DST_PORT" ]; then
- # Single destination port or random port range
- pg_set $dev "flag UDPDST_RND"
- pg_set $dev "udp_dst_min $UDP_DST_MIN"
- pg_set $dev "udp_dst_max $UDP_DST_MAX"
- fi
- # Setup random UDP port src range
- pg_set $dev "flag UDPSRC_RND"
- pg_set $dev "udp_src_min $UDP_SRC_MIN"
- pg_set $dev "udp_src_max $UDP_SRC_MAX"
- done
- # start_run
- echo "Running... ctrl^C to stop" >&2
- pg_ctrl "start"
- echo "Done" >&2
- # Print results
- for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
- dev=${DEV}@${thread}
- echo "Device: $dev"
- cat /proc/net/pktgen/$dev | grep -A2 "Result:"
- done
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