1#!/bin/bash
2#
3# Script example for many flows testing
4#
5# Number of simultaneous flows limited by variable $FLOWS
6# and number of packets per flow controlled by variable $FLOWLEN
7#
8basedir=`dirname $0`
9source ${basedir}/functions.sh
10root_check_run_with_sudo "$@"
11
12# Parameter parsing via include
13source ${basedir}/parameters.sh
14# Set some default params, if they didn't get set
15[ -z "$DEST_IP" ]   && DEST_IP="198.18.0.42"
16[ -z "$DST_MAC" ]   && DST_MAC="90:e2:ba:ff:ff:ff"
17[ -z "$CLONE_SKB" ] && CLONE_SKB="0"
18
19# NOTICE:  Script specific settings
20# =======
21# Limiting the number of concurrent flows ($FLOWS)
22# and also set how many packets each flow contains ($FLOWLEN)
23#
24[ -z "$FLOWS" ]     && FLOWS="8000"
25[ -z "$FLOWLEN" ]   && FLOWLEN="10"
26
27# Base Config
28DELAY="0"  # Zero means max speed
29COUNT="0"  # Zero means indefinitely
30
31if [[ -n "$BURST" ]]; then
32    err 1 "Bursting not supported for this mode"
33fi
34
35# General cleanup everything since last run
36pg_ctrl "reset"
37
38# Threads are specified with parameter -t value in $THREADS
39for ((thread = 0; thread < $THREADS; thread++)); do
40    dev=${DEV}@${thread}
41
42    # Add remove all other devices and add_device $dev to thread
43    pg_thread $thread "rem_device_all"
44    pg_thread $thread "add_device" $dev
45
46    # Base config
47    pg_set $dev "flag QUEUE_MAP_CPU"
48    pg_set $dev "count $COUNT"
49    pg_set $dev "clone_skb $CLONE_SKB"
50    pg_set $dev "pkt_size $PKT_SIZE"
51    pg_set $dev "delay $DELAY"
52    pg_set $dev "flag NO_TIMESTAMP"
53
54    # Single destination
55    pg_set $dev "dst_mac $DST_MAC"
56    pg_set $dev "dst $DEST_IP"
57
58    # Randomize source IP-addresses
59    pg_set $dev "flag IPSRC_RND"
60    pg_set $dev "src_min 198.18.0.0"
61    pg_set $dev "src_max 198.19.255.255"
62
63    # Limit number of flows (max 65535)
64    pg_set $dev "flows $FLOWS"
65    #
66    # How many packets a flow will send, before flow "entry" is
67    # re-generated/setup.
68    pg_set $dev "flowlen $FLOWLEN"
69    #
70    # Flag FLOW_SEQ will cause $FLOWLEN packets from the same flow
71    # being send back-to-back, before next flow is selected
72    # incrementally.  This helps lookup caches, and is more realistic.
73    #
74    pg_set $dev "flag FLOW_SEQ"
75
76done
77
78# Run if user hits control-c
79function print_result() {
80    # Print results
81    for ((thread = 0; thread < $THREADS; thread++)); do
82	dev=${DEV}@${thread}
83	echo "Device: $dev"
84	cat /proc/net/pktgen/$dev | grep -A2 "Result:"
85    done
86}
87# trap keyboard interrupt (Ctrl-C)
88trap true SIGINT
89
90echo "Running... ctrl^C to stop" >&2
91pg_ctrl "start"
92
93print_result
94