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15f2cbbde4
Adding a pktgen sample script that demonstrates how to use pktgen for simulating flows. Script will generate a certain number of concurrent flows ($FLOWS) and each flow will contain $FLOWLEN packets, which will be send back-to-back, before switching to a new flow, due to flag FLOW_SEQ. This script obsoletes the old sample script 'pktgen.conf-1-1-flows', which is removed. Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
94 lines
2.5 KiB
Bash
Executable File
94 lines
2.5 KiB
Bash
Executable File
#!/bin/bash
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#
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# Script example for many flows testing
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#
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# Number of simultaneous flows limited by variable $FLOWS
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# and number of packets per flow controlled by variable $FLOWLEN
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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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# NOTICE: Script specific settings
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# =======
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# Limiting the number of concurrent flows ($FLOWS)
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# and also set how many packets each flow contains ($FLOWLEN)
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#
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[ -z "$FLOWS" ] && FLOWS="8000"
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[ -z "$FLOWLEN" ] && FLOWLEN="10"
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# Base Config
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DELAY="0" # Zero means max speed
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COUNT="0" # Zero means indefinitely
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if [[ -n "$BURST" ]]; then
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err 1 "Bursting not supported for this mode"
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fi
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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 = 0; thread < $THREADS; thread++)); do
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dev=${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 $DEST_IP"
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# Randomize source IP-addresses
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pg_set $dev "flag IPSRC_RND"
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pg_set $dev "src_min 198.18.0.0"
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pg_set $dev "src_max 198.19.255.255"
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# Limit number of flows (max 65535)
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pg_set $dev "flows $FLOWS"
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#
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# How many packets a flow will send, before flow "entry" is
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# re-generated/setup.
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pg_set $dev "flowlen $FLOWLEN"
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#
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# Flag FLOW_SEQ will cause $FLOWLEN packets from the same flow
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# being send back-to-back, before next flow is selected
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# incrementally. This helps lookup caches, and is more realistic.
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#
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pg_set $dev "flag FLOW_SEQ"
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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 = 0; thread < $THREADS; thread++)); do
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dev=${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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