1#!/bin/bash
2#
3# Simple example:
4#  * pktgen sending with single thread and single interface
5#  * flow variation via random UDP source port
6#
7basedir=`dirname $0`
8source ${basedir}/functions.sh
9root_check_run_with_sudo "$@"
10
11# Parameter parsing via include
12# - go look in parameters.sh to see which setting are avail
13# - required param is the interface "-i" stored in $DEV
14source ${basedir}/parameters.sh
15#
16# Set some default params, if they didn't get set
17if [ -z "$DEST_IP" ]; then
18    [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1"
19fi
20[ -z "$CLONE_SKB" ] && CLONE_SKB="0"
21# Example enforce param "-m" for dst_mac
22[ -z "$DST_MAC" ] && usage && err 2 "Must specify -m dst_mac"
23
24# Base Config
25DELAY="0"        # Zero means max speed
26COUNT="100000"   # Zero means indefinitely
27
28# Flow variation random source port between min and max
29UDP_MIN=9
30UDP_MAX=109
31
32# General cleanup everything since last run
33# (especially important if other threads were configured by other scripts)
34pg_ctrl "reset"
35
36# Add remove all other devices and add_device $DEV to thread 0
37thread=0
38pg_thread $thread "rem_device_all"
39pg_thread $thread "add_device" $DEV
40
41# How many packets to send (zero means indefinitely)
42pg_set $DEV "count $COUNT"
43
44# Reduce alloc cost by sending same SKB many times
45# - this obviously affects the randomness within the packet
46pg_set $DEV "clone_skb $CLONE_SKB"
47
48# Set packet size
49pg_set $DEV "pkt_size $PKT_SIZE"
50
51# Delay between packets (zero means max speed)
52pg_set $DEV "delay $DELAY"
53
54# Flag example disabling timestamping
55pg_set $DEV "flag NO_TIMESTAMP"
56
57# Destination
58pg_set $DEV "dst_mac $DST_MAC"
59pg_set $DEV "dst$IP6 $DEST_IP"
60
61# Setup random UDP port src range
62pg_set $DEV "flag UDPSRC_RND"
63pg_set $DEV "udp_src_min $UDP_MIN"
64pg_set $DEV "udp_src_max $UDP_MAX"
65
66# start_run
67echo "Running... ctrl^C to stop" >&2
68pg_ctrl "start"
69echo "Done" >&2
70
71# Print results
72echo "Result device: $DEV"
73cat /proc/net/pktgen/$DEV
74