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Message-ID: <20150521101730.15148.94042.stgit@ivy>
Date: Thu, 21 May 2015 12:17:33 +0200
From: Jesper Dangaard Brouer <brouer@...hat.com>
To: netdev@...r.kernel.org
Cc: Jesper Dangaard Brouer <brouer@...hat.com>,
Daniel Borkmann <borkmann@...earbox.net>,
Alexei Starovoitov <ast@...mgrid.com>,
Robert Olsson <robert@...julf.se>,
Ben Greear <greearb@...delatech.com>,
Cong Wang <cwang@...pensource.com>
Subject: [net-next PATCH v3 07/10] pktgen: add sample script
pktgen_sample01_simple.sh
Add the first basic pktgen samples script pktgen_sample01_simple.sh,
which demonstrates the a simple use of the helper functions.
Removing pktgen.conf-1-1 as that example should be covered now.
The naming scheme pktgen_sampleNN, where NN is a number, should encourage
reading the samples in a specific order.
Script cause pktgen sending with a single thread and single interface,
and introduce flow variation via random UDP source port.
Usage example and help:
./pktgen_sample01_simple.sh -i eth4 -m 00:1B:21:3C:9D:F8 -d 192.168.8.2
Usage: ./pktgen_sample01_simple.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
-c : ($SKB_CLONE) SKB clones send before alloc new SKB
-v : ($VERBOSE) verbose
-x : ($DEBUG) debug
Signed-off-by: Jesper Dangaard Brouer <brouer@...hat.com>
---
Documentation/networking/pktgen.txt | 29 ++++++++++--
samples/pktgen/pktgen.conf-1-1 | 59 -------------------------
samples/pktgen/pktgen_sample01_simple.sh | 71 ++++++++++++++++++++++++++++++
3 files changed, 94 insertions(+), 65 deletions(-)
delete mode 100755 samples/pktgen/pktgen.conf-1-1
create mode 100755 samples/pktgen/pktgen_sample01_simple.sh
diff --git a/Documentation/networking/pktgen.txt b/Documentation/networking/pktgen.txt
index e7ae8b2..f2f1033 100644
--- a/Documentation/networking/pktgen.txt
+++ b/Documentation/networking/pktgen.txt
@@ -219,10 +219,30 @@ Examples:
Sample scripts
==============
-A collection of small tutorial scripts for pktgen is in the
-samples/pktgen directory:
+A collection of tutorial scripts and helpers for pktgen is in the
+samples/pktgen directory. The helper parameters.sh file support easy
+and consistant parameter parsing across the sample scripts.
+
+Usage example and help:
+ ./pktgen_sample01_simple.sh -i eth4 -m 00:1B:21:3C:9D:F8 -d 192.168.8.2
+
+Usage: ./pktgen_sample01_simple.sh [-vx] -i ethX
+ -i : ($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
+
+The global variables being set are also listed. E.g. the required
+interface/device parameter "-i" sets variable $DEV. Copy the
+pktgen_sampleXX scripts and modify them to fit your own needs.
+
+The old scripts:
-pktgen.conf-1-1 # 1 CPU 1 dev
pktgen.conf-1-2 # 1 CPU 2 dev
pktgen.conf-2-1 # 2 CPU's 1 dev
pktgen.conf-2-2 # 2 CPU's 2 dev
@@ -231,9 +251,6 @@ pktgen.conf-1-1-ip6 # 1 CPU 1 dev ipv6
pktgen.conf-1-1-ip6-rdos # 1 CPU 1 dev ipv6 w. route DoS
pktgen.conf-1-1-flows # 1 CPU 1 dev multiple flows.
-Run in shell: ./pktgen.conf-X-Y
-This does all the setup including sending.
-
Interrupt affinity
===================
diff --git a/samples/pktgen/pktgen.conf-1-1 b/samples/pktgen/pktgen.conf-1-1
deleted file mode 100755
index f91daad..0000000
--- a/samples/pktgen/pktgen.conf-1-1
+++ /dev/null
@@ -1,59 +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 means maximum speed.
-
-CLONE_SKB="clone_skb 1000000"
-# 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"
- pgset "dst 10.10.11.2"
- 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
diff --git a/samples/pktgen/pktgen_sample01_simple.sh b/samples/pktgen/pktgen_sample01_simple.sh
new file mode 100755
index 0000000..8c9d318
--- /dev/null
+++ b/samples/pktgen/pktgen_sample01_simple.sh
@@ -0,0 +1,71 @@
+#!/bin/bash
+#
+# Simple example:
+# * pktgen sending with single thread and single interface
+# * flow variation via random UDP source port
+#
+basedir=`dirname $0`
+source ${basedir}/functions.sh
+root_check_run_with_sudo "$@"
+
+# Parameter parsing via include
+# - go look in parameters.sh to see which setting are avail
+# - required param is the interface "-i" stored in $DEV
+source ${basedir}/parameters.sh
+#
+# Set some default params, if they didn't get set
+[ -z "$DEST_IP" ] && DEST_IP="198.18.0.42"
+[ -z "$CLONE_SKB" ] && CLONE_SKB="0"
+# Example enforce param "-m" for dst_mac
+[ -z "$DST_MAC" ] && usage && err 2 "Must specify -m dst_mac"
+
+# Base Config
+DELAY="0" # Zero means max speed
+COUNT="100000" # Zero means indefinitely
+
+# Flow variation random source port between min and max
+UDP_MIN=9
+UDP_MAX=109
+
+# General cleanup everything since last run
+# (especially important if other threads were configured by other scripts)
+pg_ctrl "reset"
+
+# Add remove all other devices and add_device $DEV to thread 0
+thread=0
+pg_thread $thread "rem_device_all"
+pg_thread $thread "add_device" $DEV
+
+# How many packets to send (zero means indefinitely)
+pg_set $DEV "count $COUNT"
+
+# Reduce alloc cost by sending same SKB many times
+# - this obviously affects the randomness within the packet
+pg_set $DEV "clone_skb $CLONE_SKB"
+
+# Set packet size
+pg_set $DEV "pkt_size $PKT_SIZE"
+
+# Delay between packets (zero means max speed)
+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 $DEST_IP"
+
+# Setup random UDP port src range
+pg_set $DEV "flag UDPSRC_RND"
+pg_set $DEV "udp_src_min $UDP_MIN"
+pg_set $DEV "udp_src_max $UDP_MAX"
+
+# start_run
+echo "Running... ctrl^C to stop" >&2
+pg_ctrl "start"
+echo "Done" >&2
+
+# Print results
+echo "Result device: $DEV"
+cat /proc/net/pktgen/$DEV
--
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