1#!/bin/bash
2# SPDX-License-Identifier: GPL-2.0
3#
4# Benchmark script:
5#  - developed for benchmarking egress qdisc path, derived (more
6#    like cut'n'pasted) from ingress benchmark script.
7#
8# Script for injecting packets into egress qdisc path of the stack
9# with pktgen "xmit_mode queue_xmit".
10#
11basedir=`dirname $0`
12source ${basedir}/functions.sh
13root_check_run_with_sudo "$@"
14
15# Parameter parsing via include
16source ${basedir}/parameters.sh
17if [ -z "$DEST_IP" ]; then
18    [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1"
19fi
20[ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff"
21
22# Burst greater than 1 are invalid for queue_xmit mode
23if [[ -n "$BURST" ]]; then
24    err 1 "Bursting not supported for this mode"
25fi
26[ -z "$COUNT" ] && COUNT="10000000" # Zero means indefinitely
27
28# Base Config
29DELAY="0"        # Zero means max speed
30
31# General cleanup everything since last run
32pg_ctrl "reset"
33
34# Threads are specified with parameter -t value in $THREADS
35for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
36    # The device name is extended with @name, using thread number to
37    # make then unique, but any name will do.
38    dev=${DEV}@${thread}
39
40    # Add remove all other devices and add_device $dev to thread
41    pg_thread $thread "rem_device_all"
42    pg_thread $thread "add_device" $dev
43
44    # Base config of dev
45    pg_set $dev "flag QUEUE_MAP_CPU"
46    pg_set $dev "count $COUNT"
47    pg_set $dev "pkt_size $PKT_SIZE"
48    pg_set $dev "delay $DELAY"
49    pg_set $dev "flag NO_TIMESTAMP"
50
51    # Destination
52    pg_set $dev "dst_mac $DST_MAC"
53    pg_set $dev "dst$IP6 $DEST_IP"
54
55    # Inject packet into TX qdisc egress path of stack
56    pg_set $dev "xmit_mode queue_xmit"
57done
58
59# start_run
60echo "Running... ctrl^C to stop" >&2
61pg_ctrl "start"
62echo "Done" >&2
63
64# Print results
65for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
66    dev=${DEV}@${thread}
67    echo "Device: $dev"
68    cat /proc/net/pktgen/$dev | grep -A2 "Result:"
69done
70