pktgen: add sample script pktgen_sample04_many_flows.sh

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>
This commit is contained in:
Jesper Dangaard Brouer 2016-07-13 22:06:04 +02:00 committed by David S. Miller
parent 53d94892e2
commit 15f2cbbde4
2 changed files with 93 additions and 67 deletions

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@ -1,67 +0,0 @@
#!/bin/bash
#modprobe pktgen
function pgset() {
local result
echo $1 > $PGDEV
result=`cat $PGDEV | fgrep "Result: OK:"`
if [ "$result" = "" ]; then
cat $PGDEV | fgrep Result:
fi
}
# Config Start Here -----------------------------------------------------------
# thread config
# Each CPU has its own thread. One CPU example. We add eth1.
PGDEV=/proc/net/pktgen/kpktgend_0
echo "Removing all devices"
pgset "rem_device_all"
echo "Adding eth1"
pgset "add_device eth1"
# device config
# delay 0
# We need to do alloc for every skb since we cannot clone here.
CLONE_SKB="clone_skb 0"
# NIC adds 4 bytes CRC
PKT_SIZE="pkt_size 60"
# COUNT 0 means forever
#COUNT="count 0"
COUNT="count 10000000"
DELAY="delay 0"
PGDEV=/proc/net/pktgen/eth1
echo "Configuring $PGDEV"
pgset "$COUNT"
pgset "$CLONE_SKB"
pgset "$PKT_SIZE"
pgset "$DELAY"
# Random address with in the min-max range
pgset "flag IPDST_RND"
pgset "dst_min 10.0.0.0"
pgset "dst_max 10.255.255.255"
# 8k Concurrent flows at 4 pkts
pgset "flows 8192"
pgset "flowlen 4"
pgset "dst_mac 00:04:23:08:91:dc"
# Time to run
PGDEV=/proc/net/pktgen/pgctrl
echo "Running... ctrl^C to stop"
trap true INT
pgset "start"
echo "Done"
cat /proc/net/pktgen/eth1

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#!/bin/bash
#
# Script example for many flows testing
#
# Number of simultaneous flows limited by variable $FLOWS
# and number of packets per flow controlled by variable $FLOWLEN
#
basedir=`dirname $0`
source ${basedir}/functions.sh
root_check_run_with_sudo "$@"
# Parameter parsing via include
source ${basedir}/parameters.sh
# Set some default params, if they didn't get set
[ -z "$DEST_IP" ] && DEST_IP="198.18.0.42"
[ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff"
[ -z "$CLONE_SKB" ] && CLONE_SKB="0"
# NOTICE: Script specific settings
# =======
# Limiting the number of concurrent flows ($FLOWS)
# and also set how many packets each flow contains ($FLOWLEN)
#
[ -z "$FLOWS" ] && FLOWS="8000"
[ -z "$FLOWLEN" ] && FLOWLEN="10"
# Base Config
DELAY="0" # Zero means max speed
COUNT="0" # Zero means indefinitely
if [[ -n "$BURST" ]]; then
err 1 "Bursting not supported for this mode"
fi
# General cleanup everything since last run
pg_ctrl "reset"
# Threads are specified with parameter -t value in $THREADS
for ((thread = 0; thread < $THREADS; thread++)); do
dev=${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
# Base config
pg_set $dev "flag QUEUE_MAP_CPU"
pg_set $dev "count $COUNT"
pg_set $dev "clone_skb $CLONE_SKB"
pg_set $dev "pkt_size $PKT_SIZE"
pg_set $dev "delay $DELAY"
pg_set $dev "flag NO_TIMESTAMP"
# Single destination
pg_set $dev "dst_mac $DST_MAC"
pg_set $dev "dst $DEST_IP"
# Randomize source IP-addresses
pg_set $dev "flag IPSRC_RND"
pg_set $dev "src_min 198.18.0.0"
pg_set $dev "src_max 198.19.255.255"
# Limit number of flows (max 65535)
pg_set $dev "flows $FLOWS"
#
# How many packets a flow will send, before flow "entry" is
# re-generated/setup.
pg_set $dev "flowlen $FLOWLEN"
#
# Flag FLOW_SEQ will cause $FLOWLEN packets from the same flow
# being send back-to-back, before next flow is selected
# incrementally. This helps lookup caches, and is more realistic.
#
pg_set $dev "flag FLOW_SEQ"
done
# Run if user hits control-c
function print_result() {
# Print results
for ((thread = 0; thread < $THREADS; thread++)); do
dev=${DEV}@${thread}
echo "Device: $dev"
cat /proc/net/pktgen/$dev | grep -A2 "Result:"
done
}
# trap keyboard interrupt (Ctrl-C)
trap true SIGINT
echo "Running... ctrl^C to stop" >&2
pg_ctrl "start"
print_result