pktgen: add sample script pktgen_sample02_multiqueue.sh
Add the pktgen samples script pktgen_sample02_multiqueue.sh that demonstrates generating packets on multiqueue NICs. Specifically notice the options "-t" that specifies how many kernel threads to activate. Also notice the flag QUEUE_MAP_CPU, which cause the SKB TX queue to be mapped to the CPU running the kernel thread. For best scalability people are also encourage to map NIC IRQ /proc/irq/*/smp_affinity to CPU number. Usage example with "-t" 4 threads and help: ./pktgen_sample02_multiqueue.sh -i eth4 -m 00:1B:21:3C:9D:F8 -t 4 Usage: ./pktgen_sample02_multiqueue.sh [-vx] -i ethX -i : ($DEV) output interface/device (required) -s : ($PKT_SIZE) packet size -d : ($DEST_IP) destination IP -m : ($DST_MAC) destination MAC-addr -t : ($THREADS) threads to start -c : ($SKB_CLONE) SKB clones send before alloc new SKB -b : ($BURST) HW level bursting of SKBs -v : ($VERBOSE) verbose -x : ($DEBUG) debug Removing pktgen.conf-2-1 and pktgen.conf-2-2 as these examples should be covered now. Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jesper Dangaard Brouer
David S. Miller
parent
6f09479758
commit
282fb58947
@ -244,8 +244,6 @@ pktgen_sampleXX scripts and modify them to fit your own needs.
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The old scripts:
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pktgen.conf-1-2 # 1 CPU 2 dev
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pktgen.conf-2-1 # 2 CPU's 1 dev
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pktgen.conf-2-2 # 2 CPU's 2 dev
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pktgen.conf-1-1-rdos # 1 CPU 1 dev w. route DoS
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pktgen.conf-1-1-ip6 # 1 CPU 1 dev ipv6
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pktgen.conf-1-1-ip6-rdos # 1 CPU 1 dev ipv6 w. route DoS
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@ -1,66 +0,0 @@
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#!/bin/bash
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#modprobe pktgen
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function pgset() {
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local result
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echo $1 > $PGDEV
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result=`cat $PGDEV | fgrep "Result: OK:"`
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if [ "$result" = "" ]; then
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cat $PGDEV | fgrep Result:
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fi
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}
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# Config Start Here -----------------------------------------------------------
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# thread config
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# Each CPU has its own thread. Two CPU example. We add eth1 to the first
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# and leave the second idle.
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PGDEV=/proc/net/pktgen/kpktgend_0
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echo "Removing all devices"
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pgset "rem_device_all"
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echo "Adding eth1"
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pgset "add_device eth1"
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# We need to remove old config since we dont use this thread. We can only
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# one NIC on one CPU due to affinity reasons.
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PGDEV=/proc/net/pktgen/kpktgend_1
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echo "Removing all devices"
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pgset "rem_device_all"
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# device config
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# delay 0 means maximum speed.
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CLONE_SKB="clone_skb 1000000"
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# NIC adds 4 bytes CRC
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PKT_SIZE="pkt_size 60"
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# COUNT 0 means forever
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#COUNT="count 0"
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COUNT="count 10000000"
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DELAY="delay 0"
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PGDEV=/proc/net/pktgen/eth1
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echo "Configuring $PGDEV"
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pgset "$COUNT"
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pgset "$CLONE_SKB"
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pgset "$PKT_SIZE"
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pgset "$DELAY"
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pgset "dst 10.10.11.2"
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pgset "dst_mac 00:04:23:08:91:dc"
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# Time to run
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PGDEV=/proc/net/pktgen/pgctrl
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echo "Running... ctrl^C to stop"
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trap true INT
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pgset "start"
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echo "Done"
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cat /proc/net/pktgen/eth1
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@ -1,73 +0,0 @@
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#!/bin/bash
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#modprobe pktgen
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function pgset() {
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local result
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echo $1 > $PGDEV
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result=`cat $PGDEV | fgrep "Result: OK:"`
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if [ "$result" = "" ]; then
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cat $PGDEV | fgrep Result:
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fi
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}
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# Config Start Here -----------------------------------------------------------
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# thread config
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# Each CPU has its own thread. Two CPU example. We add eth1, eth2 respectively.
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PGDEV=/proc/net/pktgen/kpktgend_0
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echo "Removing all devices"
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pgset "rem_device_all"
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echo "Adding eth1"
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pgset "add_device eth1"
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PGDEV=/proc/net/pktgen/kpktgend_1
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echo "Removing all devices"
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pgset "rem_device_all"
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echo "Adding eth2"
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pgset "add_device eth2"
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# device config
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# delay 0 means maximum speed.
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CLONE_SKB="clone_skb 1000000"
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# NIC adds 4 bytes CRC
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PKT_SIZE="pkt_size 60"
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# COUNT 0 means forever
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#COUNT="count 0"
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COUNT="count 10000000"
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DELAY="delay 0"
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PGDEV=/proc/net/pktgen/eth1
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echo "Configuring $PGDEV"
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pgset "$COUNT"
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pgset "$CLONE_SKB"
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pgset "$PKT_SIZE"
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pgset "$DELAY"
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pgset "dst 10.10.11.2"
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pgset "dst_mac 00:04:23:08:91:dc"
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PGDEV=/proc/net/pktgen/eth2
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echo "Configuring $PGDEV"
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pgset "$COUNT"
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pgset "$CLONE_SKB"
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pgset "$PKT_SIZE"
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pgset "$DELAY"
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pgset "dst 192.168.2.2"
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pgset "dst_mac 00:04:23:08:91:de"
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# Time to run
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PGDEV=/proc/net/pktgen/pgctrl
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echo "Running... ctrl^C to stop"
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trap true INT
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pgset "start"
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echo "Done"
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cat /proc/net/pktgen/eth1 /proc/net/pktgen/eth2
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75
samples/pktgen/pktgen_sample02_multiqueue.sh
Executable file
75
samples/pktgen/pktgen_sample02_multiqueue.sh
Executable file
@ -0,0 +1,75 @@
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#!/bin/bash
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#
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# Multiqueue: Using pktgen threads for sending on multiple CPUs
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# * adding devices to kernel threads
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# * notice the naming scheme for keeping device names unique
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# * nameing scheme: dev@thread_number
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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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#
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# Required param: -i dev in $DEV
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source ${basedir}/parameters.sh
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# Base Config
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DELAY="0" # Zero means max speed
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COUNT="100000" # Zero means indefinitely
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[ -z "$CLONE_SKB" ] && CLONE_SKB="0"
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# Flow variation random source port between min and max
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UDP_MIN=9
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UDP_MAX=109
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# (example of setting default params in your script)
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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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# 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 < $THREADS; thread++)); do
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# The device name is extended with @name, using thread number to
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# make then unique, but any name will do.
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dev=${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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# Notice config queue to map to cpu (mirrors smp_processor_id())
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# It is beneficial to map IRQ /proc/irq/*/smp_affinity 1:1 to CPU number
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pg_set $dev "flag QUEUE_MAP_CPU"
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# Base config of dev
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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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# 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 $DEST_IP"
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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_MIN"
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pg_set $dev "udp_src_max $UDP_MAX"
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done
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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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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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