1#!/bin/bash
2#
3# Benchmark script:
4#  - developed for benchmarking egress qdisc path, derived (more
5#    like cut'n'pasted) from ingress benchmark script.
6#
7# Script for injecting packets into egress qdisc path of the stack
8# with pktgen "xmit_mode queue_xmit".
9#
10basedir=`dirname $0`
11source ${basedir}/functions.sh
12root_check_run_with_sudo "$@"
13
14# Parameter parsing via include
15source ${basedir}/parameters.sh
16if [ -z "$DEST_IP" ]; then
17    [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1"
18fi
19[ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff"
20
21# Burst greater than 1 are invalid for queue_xmit mode
22if [[ -n "$BURST" ]]; then
23    err 1 "Bursting not supported for this mode"
24fi
25
26# Base Config
27DELAY="0"        # Zero means max speed
28COUNT="10000000" # Zero means indefinitely
29
30# General cleanup everything since last run
31pg_ctrl "reset"
32
33# Threads are specified with parameter -t value in $THREADS
34for ((thread = 0; thread < $THREADS; thread++)); do
35    # The device name is extended with @name, using thread number to
36    # make then unique, but any name will do.
37    dev=${DEV}@${thread}
38
39    # Add remove all other devices and add_device $dev to thread
40    pg_thread $thread "rem_device_all"
41    pg_thread $thread "add_device" $dev
42
43    # Base config of dev
44    pg_set $dev "flag QUEUE_MAP_CPU"
45    pg_set $dev "count $COUNT"
46    pg_set $dev "pkt_size $PKT_SIZE"
47    pg_set $dev "delay $DELAY"
48    pg_set $dev "flag NO_TIMESTAMP"
49
50    # Destination
51    pg_set $dev "dst_mac $DST_MAC"
52    pg_set $dev "dst$IP6 $DEST_IP"
53
54    # Inject packet into TX qdisc egress path of stack
55    pg_set $dev "xmit_mode queue_xmit"
56done
57
58# start_run
59echo "Running... ctrl^C to stop" >&2
60pg_ctrl "start"
61echo "Done" >&2
62
63# Print results
64for ((thread = 0; thread < $THREADS; thread++)); do
65    dev=${DEV}@${thread}
66    echo "Device: $dev"
67    cat /proc/net/pktgen/$dev | grep -A2 "Result:"
68done
69